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1

Smart Suspension System for Linear Guideways  

Science Conference Proceedings (OSTI)

This paper presents a new method for the semi-active control of the span system of linear guideways subjected to a travelling load. Two elastic beams are coupled by a set of controlled dampers. The relative velocity of the spans provides an opportunity ... Keywords: Linear guideway, Moving load, Semi-active control, Smart suspension system, Vibration control

Dominik Pisarski; Czeslaw I. Bajer

2011-06-01T23:59:59.000Z

2

Vehicle/guideway interaction and ride comfort in maglev systems  

DOE Green Energy (OSTI)

The importance of vehicle/guideway dynamics in maglev systems is discussed. The particular interest associated with modeling vehicle guide-way interactions and explaining response characteristics of maglev systems for a multicar, multiload vehicle traversing on a single- or double-span flexible guideway are considered, with an emphasis on vehicle/guideway coupling effects, comparison of concentrated and distributed loads, and ride comfort. Coupled effects of vehicle/guideway interactions over a wide range of vehicle speeds with various vehicle and guideway parameters are investigated, and appropriate critical vehicle speeds or crossing frequencies are identified.

Cai, Y.; Chen, S.S.; Rote, D.M.; Coffey, H.T.

1993-10-01T23:59:59.000Z

3

Maglev guideway cost and construction schedule assessment  

SciTech Connect

A summary of construction cost and scheduling information is presented for four maglev guideway designs on an example route from Baltimore, MD to Newark, NJ. This work results from the National Maglev Initiative (NMI), a government-industry effort from 1989 to 1994. The system design concepts used as a basis for developing cost and construction scheduling information, were submitted by four industry consortia solely for this analysis, and represent their own unpublished designs. The detailed cost and construction schedule analyses cover the main guideway only. A summary estimate was made for stations, power distribution systems, maintenance facilities, and other types of infrastructure. The results of the analyses indicate a number of design aspects which must receive further consideration by future designers. These aspects will affect the practical and economic construction and long-term maintenance of a high-speed maglev guideway.

Plotkin, D.; Kim, S. [Army Construction Engineering Research Lab., Champaign, IL (United States)

1997-05-01T23:59:59.000Z

4

Rolling stones: The motion of a sphere down an inclined plane coated with a thin liquid film  

E-Print Network (OSTI)

A spherical bead deposited on a smooth tilted dry plane wall rolls down the slope under the uniform acceleration of gravity. We describe an analogous experiment conducted using a plane wall that is coated with a thin layer ...

Bico, Jose

5

Simulating the Fate of an Earth-like Planet Inclined to the Ecliptic Plane to Improve Understanding of Planetary System Formation  

E-Print Network (OSTI)

The formation of our Earth and Solar System has befuddled humankind for centuries. Although there remain a number of peculiarities to be remedied by the currently held nebular theory of Solar System formation, there exists a widely held convergence on the basic components of planetary formation. Interactions with the giant planets of our system, as well as heavy bombardment that occurred billions of years ago, played major roles in early Solar System formation and continue to shape its dynamics through huge gravitational perturbations. In order to better understand the effect that planetary giants have on bodies within our Solar System, this paper proposes to simulate the n-body problem for the Sun-Jupiter-Earth system so as to quantify the effect that a Jupiter giant would have on an Earth-like planet inclined to the ecliptic planet. Through iteration of the Earth-like planet’s inclination, the maximum angle of inclination before ejection from the Solar System can be found. Using only Newtonian forces for the three-body problem, the simulation runs using a Runge-Kutta 4 solver to plot each body’s position, velocity, and acceleration against time. These results give new insight into why our Solar System lies primarily in the ecliptic disc and how its dynamics will continue to vary over time. For the Sun-Earth-Jupiter system simulated in this paper (run over 119,000 years), orbits inclined to the ecliptic plane greater than 50° became unstable, with Earth ejection after 62,000 years (85°). Furthermore, simulation of other solar systems leads to a more general theory on the impact of planetary formation and heavy bombardment on the fate of Earth-like planets elsewhere in the Universe. For the exoplanetary system simulated in this paper, which includes a hot Jupiter at 1.5 AU and an Earth-like planet at 1 AU (run over 94,000 years), orbits inclined to the ecliptic plane greater than 10° became unstable, with Earth ejection after 6,250 years (50°). Thus, as the Jupiter giant is moved inward, its influence over the Earth-like planet increases and the time to orbital decay of the Earth-like planet decreases. Overall, these results illustrate that the orbits of Earth-like planets in systems with Jupiter giants have restrictions on available orbital inclinations to remain stable.

Nichols, Kristin

2013-05-01T23:59:59.000Z

6

Expansion joint for guideway for magnetic levitation transportation system  

DOE Patents (OSTI)

An expansion joint that allows a guideway of a magnetic levitation transportation system to expand and contract while minimizing transients occurring in the magnetic lift and drag forces acting on a magnetic levitation vehicle traveling over the joint includes an upper cut or recess extending downwardly from the upper surface of the guideway and a non-intersecting lower cut or recess that extends upwardly from the lower surface of the guideway. The sidewalls of the cuts can be parallel to each other and the vertical axis of the guideway; the depth of the lower cut can be greater than the depth of the upper cut; and the overall combined lengths of the cuts can be greater than the thickness of the guideway from the upper to lower surface so that the cuts will overlap, but be spaced apart from each other. The distance between the cuts can be determined on the basis of the force transients and the mechanical behavior of the guideway. A second pair of similarly configured upper and lower cuts may be disposed in the guideway; the expansion joint may consist of two upper cuts and one lower cut; or the cuts may have non-parallel, diverging sidewalls so that the cuts have a substantially dove-tail shape.

Rossing, Thomas D. (DeKalb, IL)

1993-01-01T23:59:59.000Z

7

Expansion joint for guideway for magnetic levitation transportation system  

DOE Patents (OSTI)

An expansion joint that allows a guideway of a magnetic levitation transportation system to expand and contract while minimizing transients occurring in the magnetic lift and drag forces acting on a magnetic levitation vehicle traveling over the joint includes an upper cut or recess extending downwardly from the upper surface of the guideway and a non-intersecting lower cut or recess that extends upwardly from the lower surface of the guideway. The side walls of the cuts can be parallel to each other and the vertical axis of the guideway; the depth of the lower cut can be greater than the depth of the upper cut; and the overall combined lengths of the cuts can be greater than the thickness of the guideway from the upper to lower surface so that the cuts will overlap, but be spaced apart from each other. The distance between the cuts can be determined on the basis of the force transients and the mechanical behavior of the guideway. A second pair of similarly configured upper and lower cuts may be disposed in the guideway; the expansion joint may consist of two upper cuts and one lower cut; or the cuts may have non-parallel, diverging side walls so that the cuts have a substantially dove-tail shape.

Rossing, T.D.

1993-02-09T23:59:59.000Z

8

Expansion joint for guideway for magnetic levitation transportation system  

DOE Patents (OSTI)

An expansion joint that allows a guideway of a magnetic levitation transportation system to expand and contract while minimizing transients occurring in the magnetic lift and drag forces acting on a magnetic levitation vehicle traveling over the joint includes an upper cut or recess extending downwardly from the upper surface of the guideway and a non-intersecting lower cut or recess that extends upwardly from the lower surface of the guideway. The sidewalls of the cuts can be parallel to each other and the vertical axis of the guideway; the depth of the lower cut can be greater than the depth of the upper cut; and the overall combined lengths of the cuts can be greater than the thickness of the guideway from the upper to lower surface so that the cuts will overlap, but be spaced apart from each other. The distance between the cuts can be determined on the basis of the force transients and the mechanical behavior of the guideway. A second pair of similarly configured upper and lower cuts may be disposed in the guideway; the expansion joint may consist of two upper cuts and one lower cut; or the cuts may have non-parallel, diverging sidewalls so that the cuts have a substantially dove-tail shape.

Rossing, T.D.

1991-12-31T23:59:59.000Z

9

Weatherford Inclined Wellbore Construction  

SciTech Connect

The Rocky Mountain Oilfield Testing Center (RMOTC) has recently completed construction of an inclined wellbore with seven (7) inch, twenty-three (23) pound casing at a total depth of 1296 feet. The inclined wellbore is near vertical to 180 feet with a build angle of approximately 4.5 degrees per hundred feet thereafter. The inclined wellbore was utilized for further proprietary testing after construction and validation. The wellbore is available to other companies requiring a cased hole environment with known deviation out to fifty degrees (50) from vertical. The wellbore may also be used by RMOTC for further deepening into the fractured shales of the Steele and Niobrara formation.

Schulte, R.

2002-08-19T23:59:59.000Z

10

Cost-effectiveness of freeway median high occupancy vehicle (HOV) facility conversion to rail guideway transit  

E-Print Network (OSTI)

Many freeways in the United States contain median high occupancy vehicle (HOV) facilities. These facilities have been envisioned by some as reserved space for future rail guideway transit. This thesis examines the cost-effectiveness of converting a freeway median HOV lane into a guideway transit line. A full-cost model was developed to determine the cost effectiveness of converting an HOV lane into a rail transit line. The measure of cost-effectiveness used was the benefit-to-cost ratio. The full-cost model contained two cost categories (capital and operating costs) and two benefit categories (travel time and externality benefits). This fullcost model was adopted to conditions on the Katy Freeway in Houston Texas which served as a case study for this thesis. It was found that 29 percent of the person-miles of travel on the Katy Freeway under given conditions must utilize guideway transit for conversion to be cost-effective. It was also found that the model is sensitive to assumptions of the value of time, project soft costs (administrative, planning, and design costs) and the operating cost of the rail transit system. The model is also sensitive to assumptions regarding latent demand. It was concluded that conversion to rail guideway transit in the case study example is not cost-effective. It was reconunended that further investigation be taken into full-cost model components to allow more certain estimates of cost components. Also recommended was further consideration of the effects of latent demand on HOV to rail guideway transit conversions.

Best, Matthew Evans

1996-01-01T23:59:59.000Z

11

Gravity currents in a porous medium at an inclined plane  

E-Print Network (OSTI)

We consider the release from a point source of relatively heavy fluid into a porous saturated medium above an impermeable slope. We consider the case where the volume of the resulting gravity current increases with time like $t^\\alpha$ and show that for $\\alpha3$, this situation is reversed with spreading occurring predominantly downslope for short times. The governing equations admit similarity solutions whose scaling behaviour we determine, with the full similarity form being evaluated by numerical computations of the governing partial differential equation. We find that the results of these analyses are in good quantitative agreement with a series of laboratory experiments. Finally, we briefly discuss the implications of our work for the sequestration of carbon dioxide in aquifers with a sloping, impermeable cap.

Vella, D; Huppert, Herbert E.; Vella, Dominic

2006-01-01T23:59:59.000Z

12

Fiber optic inclination detector system  

DOE Patents (OSTI)

A fiber optic inclination detector system for determining the angular displacement of an object from a reference surface includes a simple mechanical transducer which requires a minimum number of parts and no electrical components. The system employs a single light beam which is split into two light beams and provided to the transducer. Each light beam is amplitude modulated upon reflecting off the transducer to detect inclination. The power values associated with each of the reflected light beams are converted by a pair of photodetectors into voltage signals, and a microprocessor manipulates the voltage signals to provide a measure of the angular displacement between the object and the reference surface.

Cwalinski, J.P.

1994-12-31T23:59:59.000Z

13

Hydraulic jumps on an incline  

E-Print Network (OSTI)

When a fluid jet strikes an inclined solid surface at normal incidence, gravity creates a flow pattern with a thick outer rim resembling a parabola and reminiscent of a hydraulic jump. There appears to be little theory or experiments describing simple aspects of this phenomenon, such as the maximum rise height of the fluid above the impact point, and its dependence on jet velocity and inclination angle. We address this with experiments, and present a simple theory based on horizontal hydraulic jumps which accounts for the rise height and its scaling, though without describing the shape of the parabolic envelope.

Jean-Luc Thiffeault; Andrew Belmonte

2010-09-01T23:59:59.000Z

14

Hydraulic jumps on an incline  

E-Print Network (OSTI)

When a fluid jet strikes an inclined solid surface at normal incidence, gravity creates a flow pattern with a thick outer rim resembling a parabola and reminiscent of a hydraulic jump. There appears to be little theory or experiments describing simple aspects of this phenomenon, such as the maximum rise height of the fluid above the impact point, and its dependence on jet velocity and inclination angle. We address this with experiments, and present a simple theory based on horizontal hydraulic jumps which accounts for the rise height and its scaling, though without describing the shape of the parabolic envelope.

Thiffeault, Jean-Luc

2010-01-01T23:59:59.000Z

15

INCLINATION MIXING IN THE CLASSICAL KUIPER BELT  

SciTech Connect

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

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

2011-07-20T23:59:59.000Z

16

Inclined monochromator for high heat-load synchrotron x-ray radiation  

DOE Patents (OSTI)

A double crystal monochromator including two identical, parallel crystals, each of which is cut such that the normal to the diffraction planes of interest makes an angle less than 90 degrees with the surface normal. Diffraction is symmetric, regardless of whether the crystals are symmetrically or asymmetrically cut, enabling operation of the monochromator with a fixed plane of diffraction. As a result of the inclination of the crystal surface, an incident beam has a footprint area which is elongated both vertically and horizontally when compared to that of the-conventional monochromator, reducing the heat flux of the incident beam and enabling more efficient surface cooling. Because after inclination of the crystal only a fraction of thermal distortion lies in the diffraction plane, slope errors and the resultant misorientation of the diffracted beam are reduced.

Khounsary, A.M.

1992-12-31T23:59:59.000Z

17

Inclined monochromator for high heat-load synchrotron x-ray radiation  

DOE Patents (OSTI)

A double crystal monochromator including two identical, parallel crystals, each of which is cut such that the normal to the diffraction planes of interest makes an angle less than 90 degrees with the surface normal. Diffraction is symmetric, regardless of whether the crystals are symmetrically or asymmetrically cut, enabling operation of the monochromator with a fixed plane of diffraction. As a result of the inclination of the crystal surface, an incident beam has a footprint area which is elongated both vertically and horizontally when compared to that of the conventional monochromator, reducing the heat flux of the incident beam and enabling more efficient surface cooling. Because after inclination of the crystal only a fraction of thermal distortion lies in the diffraction plane, slope errors and the resultant misorientation of the diffracted beam are reduced.

Khounsary, Ali M. (Lisle, IL)

1994-01-01T23:59:59.000Z

18

Inclined monochromator for high heat-load synchrotron x-ray radiation  

DOE Patents (OSTI)

A double crystal monochromator is described including two identical, parallel crystals, each of which is cut such that the normal to the diffraction planes of interest makes an angle less than 90 degrees with the surface normal. Diffraction is symmetric, regardless of whether the crystals are symmetrically or asymmetrically cut, enabling operation of the monochromator with a fixed plane of diffraction. As a result of the inclination of the crystal surface, an incident beam has a footprint area which is elongated both vertically and horizontally when compared to that of the conventional monochromator, reducing the heat flux of the incident beam and enabling more efficient surface cooling. Because after inclination of the crystal only a fraction of thermal distortion lies in the diffraction plane, slope errors and the resultant misorientation of the diffracted beam are reduced. 11 figures.

Khounsary, A.M.

1994-02-15T23:59:59.000Z

19

Do Centaurs preserve their source inclinations?  

E-Print Network (OSTI)

The Centaurs are a population of small, planet-crossing objects in the outer solar system. They are dynamically short-lived and represent the transition population between the Kuiper belt and the Jupiter family short-period comets. Dynamical models and observations of the physical properties of the Centaurs indicate that they may have multiple source populations in the trans-Neptunian region. It has been suggested that the inclination distribution of the Centaurs may be useful in distinguishing amongst these source regions. The Centaurs, however, undergo many close encounters with the giant planets during their orbital evolution; here we show that these encounters can substantially determine the inclination distribution of the Centaurs. Almost any plausible initial inclination distribution of a Kuiper belt source results in Centaurs having inclinations peaked near 10-20 degrees. Our studies also find that the Kuiper belt is an extremely unlikely source of the retrograde Centaur that has been observed.

Volk, Kathryn

2012-01-01T23:59:59.000Z

20

Droplets bouncing on a wet, inclined surface  

E-Print Network (OSTI)

We present the results of an experimental investigation of fluid drops impacting an inclined rigid surface covered with a thin layer of high viscosity fluid. We deduce the conditions under which droplet bouncing, splitting, ...

Gilet, Tristan

Note: This page contains sample records for the topic "guideways inclined plane" 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

Flow visualisation in inclined louvered fins  

Science Conference Proceedings (OSTI)

In this study the flow within an interrupted fin design, the inclined louvered fin, is investigated experimentally through visualisation. The inclined louvered fin is a hybrid of the offset strip fin and standard louvered fin, aimed at improved performance at low Reynolds numbers for compact heat exchangers. The flow behaviour is studied in six geometrically different configurations over a range of Reynolds numbers and quantified using the concept of 'fin angle alignment factor'. The transition from steady laminar to unsteady flow was studied in detail. The fin geometry had a very large impact on the transitional flow behaviour, especially on vortex shedding. (author)

T'Joen, C.; De Paepe, M. [Department of Flow, Heat and Combustion Mechanics, Ghent University-UGent, Sint-Pietersnieuwstraat 41, 9000 Gent (Belgium); Jacobi, A. [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 West Green Street, Urbana, IL 61801 (United States)

2009-04-15T23:59:59.000Z

22

The Warped Plane of the Classical Kuiper Belt  

E-Print Network (OSTI)

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

Chiang, Eugene

2008-01-01T23:59:59.000Z

23

Focal plane  

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

SNAP near infrared system will be an integral component of the focal SNAP near infrared system will be an integral component of the focal plane. In the baseline concept thirty-six 2k x 2k HgCdTe imaging sensors covering a total of 0.34 square degrees will be placed in four 3x3 arrangements symmetric to the CCD placement. The HgCdTe devices have a cell pitch of 18 m, resulting in a total of 150 Megapixel for the NIR system. These devices exhibit low read-out noise and dark current while providing excellent quantum efficiency (typically 50%-80% over the wavelength interval 1-1.7 m). The cutoff at a wavelength of 1.7 m is a good match to the SNAP working concept; the sensors are blind to the thermal background from the warm telescope. NGST field of view (comp to 1 NIR ) Hubble WFPC (comp to 1 CCD filter) ; outer circle 28 ½ cm ; inner circle ~ 13 cm

24

Transient natural convection in heated inclined tubes  

SciTech Connect

To simulate natural convection flow patterns in directionally drilled wellbores, experiments and analyses were conducted for a circular tube with length-to-diameter (L/D) ratio of 36 at angles of 0{degree}, 20{degree}, and 35{degree} from the vertical. The tube was heated at the bottom and cooled at the top, and the insulation was adjusted so that approximately one- to two-thirds of the power dissipated was transferred through the tube wall to the surroundings. An aqueous solution of polyvinyl alcohol was employed as the working fluid in order to obtain low Rayleigh numbers corresponding to conditions in geothermal wellbores. Results were primarily qualitative but were useful in providing insight into the phenomena occurring. Steady-state temperature distributions were measured for the three orientations and for several heating rates to demonstrate the effects of tube angle and Rayleigh number. transient measurements of the temperature distribution were obtained during cooling from a higher temperature without a heat source to calibrate the heat losses. With the electrical heat source, temporal data were taken during heating to examine the approach to steady state. Quasi-steady flow conditions were approached rapidly, but the overall time constant of the apparatus was of the order of one-third of a day. Predictions with the three-dimensional TEMPEST code were first tested by comparison with simple conduction analyses. Comparison with actual data showed good agreement of the predicted temperature levels for the maximum inclination, 35{degree}, and slightly poorer agreement for the other limit, a vertical tube. Trends of temperature level and Nusselt number with heating rate or Rayleigh number were reasonable, but the predicted variation of the end Nusselt number versus inclination was in the opposite direction from the experiment. 75 refs., 20 figs., 8 tabs.

McEligot, D.M. (Westinghouse Electric Corp., Middletown, RI (USA). Oceanic Div.); Denbow, D.A. (Software AG of North America, Inc., Lakewood, CO (USA)); Murphy, H.D. (Los Alamos National Lab., NM (USA))

1990-05-01T23:59:59.000Z

25

Muon Charge Information from Geomagnetic Deviation in Inclined Extensive Air Showers  

E-Print Network (OSTI)

We propose to extract the charge information of high energy muons in very inclined extensive air showers by analyzing their relative lateral positions in the shower transverse plane. We calculate the muon lateral deviation under the geomagnetic field and compare it to dispersive deviations from other causes. By our criterion of resolvability, positive and negative muons with energies above $10^4$ GeV will be clearly separated into two lobes if the shower zenith angle is larger than $70^\\circ$. Thus we suggest a possible approach to measure the $\\mu^+ / \\mu^-$ ratio for high energy muons.

BingKan Xue; Bo-Qiang Ma

2006-11-22T23:59:59.000Z

26

Chinese Oil Demand: Steep Incline Ahead  

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

Chinese Oil Demand: Chinese Oil Demand: Steep Incline Ahead Malcolm Shealy Alacritas, Inc. April 7, 2008 Oil Demand: China, India, Japan, South Korea 0 2 4 6 8 1995 2000 2005 2010 Million Barrels/Day China South Korea Japan India IEA China Oil Forecast 0 2 4 6 8 10 12 14 16 18 2000 2005 2010 2015 2020 2025 2030 Million Barrels/Day WEO 2007 16.3 mbd 12.7 mbd IEA China Oil Forecasts 0 2 4 6 8 10 12 14 16 18 2000 2005 2010 2015 2020 2025 2030 Million Barrels/Day WEO 2007 WEO 2006 WEO 2004 WEO 2002 Vehicle Sales in China 0 2 4 6 8 10 1990 1995 2000 2005 2010 Million Vehicles/Year Vehicle Registrations in China 0 10 20 30 40 50 1990 1995 2000 2005 2010 Million Vehicles/Year Vehicle Density vs GDP per Capita 0 20 40 60 80 100 120 140 160 180 200 0 4,000 8,000 12,000 16,000 GDP per capita, 2005$ PPP Vehicles per thousand people Taiwan South Korea China Vehicle Density vs GDP per Capita

27

PLANETESIMAL DYNAMICS IN INCLINED BINARY SYSTEMS: THE ROLE OF GAS-DISK GRAVITY  

SciTech Connect

We investigate the effects of gas-disk gravity on planetesimal dynamics in inclined binary systems, where the circumprimary disk plane is tilted by a significant angle (i{sub B} ) with respect to the binary disk plane. Our focus is on the Lidov-Kozai mechanism and the evolution of planetesimal eccentricity and inclination. Using both analytical and numerical methods, we find that, on one hand, disk gravity generally narrows down the Kozai-on region, i.e., the Lidov-Kozai effect can be suppressed in certain parts of (or even the whole of) the disk depending on various parameters. In the Kozai-off region, planetesimals would move to orbits close to the midplane of the gas-disk, with the relative angle (i') following a small amplitude periodical oscillation. On the other hand, when we include the effects of disk gravity, we find that the Lidov-Kozai effect can operate even at arbitrarily low inclinations (i{sub B} ), although a lower i{sub B} leads to a smaller Kozai-on region. Furthermore, in the Kozai-on region, most planetesimals' eccentricities can be excited to extremely high values ({approx}1), and such extreme high eccentricities usually accompany orbital flipping, i.e., the planetesimal orbit flips back and forth between anterograde and retrograde. Once a planetesimal reaches very high orbital eccentricity, gas drag damping will shrink the planetesimal orbit, forming a 'hot planetesimal' on a near circular orbit very close to the primary star. Such a mechanism, if replacing the planetesimals and gas drag damping with Jupiters and tidal damping respectively, may lead to a frequent production of hot Jupiters.

Zhao Gang; Xie Jiwei; Zhou Jilin [Department of Astronomy and Key Laboratory of Modern Astronomy and Astrophysics in the Ministry of Education, Nanjing University, Nanjing 210093 (China); Lin, Douglas N. C., E-mail: xiejiwei@gmail.com, E-mail: zhoujl@nju.edu.cn [UCO/Lick Observatory, University of California, Santa Cruz, CA 95064 (United States)

2012-04-20T23:59:59.000Z

28

A PROGRADE, LOW-INCLINATION ORBIT FOR THE VERY HOT JUPITER WASP-3b  

SciTech Connect

We present new spectroscopic and photometric observations of the transiting exoplanetary system WASP-3. Spectra obtained during two separate transits exhibit the Rossiter-McLaughlin (RM) effect and allow us to estimate the sky-projected angle between the planetary orbital axis and the stellar rotation axis, {lambda} = 3.3{sup +2.5}{sub -4.4} deg. This alignment between the axes suggests that WASP-3b has a low orbital inclination relative to the equatorial plane of its parent star. During our first night of spectroscopic measurements, we observed an unexpected redshift briefly exceeding the expected sum of the orbital and RM velocities by 140 m s{sup -1}. This anomaly could represent the occultation of material erupting from the stellar photosphere, although it is more likely to be an artifact caused by moonlight scattered into the spectrograph.

Tripathi, Anjali; Winn, Joshua N.; De Kleer, Katherine R.; Carter, Joshua A. [Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Johnson, John Asher; Cabrera, Nicole E. [Institute for Astronomy, University of Hawaii, Honolulu, HI 96822 (United States); Howard, Andrew W.; Halverson, Sam; Marcy, Geoffrey W. [Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720 (United States); Holman, Matthew J.; Esquerdo, Gilbert A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Everett, Mark E., E-mail: tripathi@mit.ed, E-mail: jwinn@mit.ed [Planetary Science Institute, 1700 East Fort Lowell Road, Suite 106, Tucson, AZ 85719 (United States)

2010-05-20T23:59:59.000Z

29

Ventilating Beta Plane Leases  

Science Conference Proceedings (OSTI)

The theory of warm water lenses on beta planes is extended to include heat exchange between the lenses and their environment. The motivation for this study comes from recent observations of Gulf Stream warm core rings, which clearly show that ...

William K. Dewar

1988-08-01T23:59:59.000Z

30

Two phase pressure drop in inclined and vertical pipes  

E-Print Network (OSTI)

A method of calculating the pressure drop in inclined and vertical oil-gas wells is proposed. The data used to establish the method is from a variety of sources but is largely from air and water flowing in systems close ...

Griffith, P.

1973-01-01T23:59:59.000Z

31

Inclined fluidized bed system for drying fine coal  

SciTech Connect

Coal is processed in an inclined fluidized bed dryer operated in a plug-flow manner with zonal temperature and composition control, and an inert fluidizing gas, such as carbon dioxide or combustion gas. Recycled carbon dioxide, which is used for drying, pyrolysis, quenching, and cooling, is produced by partial decarboxylation of the coal. The coal is heated sufficiently to mobilize coal tar by further pyrolysis, which seals micropores upon quenching. Further cooling with carbon dioxide enhances stabilization.

Cha, Chang Y. (Golden, CO); Merriam, Norman W. (Laramie, WY); Boysen, John E. (Laramie, WY)

1992-02-11T23:59:59.000Z

32

Spectral Energy Distributions of Passive T Tauri Disks Inclination  

E-Print Network (OSTI)

We compute spectral energy distributions (SEDs) for passive T Tauri disks viewed at arbitrary inclinations. Semi-analytic models of disks in radiative and hydrostatic equilibrium are employed. Over viewing angles for which the flared disk does not occult the central star, the SED varies negligibly with inclination. For such aspects, the SED shortward of ~80 microns is particularly insensitive to orientation, since short wavelength disk emission is dominated by superheated surface layers which are optically thin. The SED of a nearly edge-on disk is that of a class I source. The outer disk occults inner disk regions, and emission shortward of ~30 microns is dramatically extinguished. Spectral features from dust grains may appear in absorption. However, millimeter wavelength fluxes decrease by at most a factor of 2 from face-on to edge-on orientations. We present illustrative applications of our SED models. The class I source 04108+2803B is considered a T Tauri star hidden from view by an inclined circumstellar ...

Chiang, E I

1999-01-01T23:59:59.000Z

33

Fourier plane image amplifier  

DOE Patents (OSTI)

A solid state laser is frequency tripled to 0.3 {micro}m. A small portion of the laser is split off and generates a Stokes seed in a low power oscillator. The low power output passes through a mask with the appropriate hole pattern. Meanwhile, the bulk of the laser output is focused into a larger stimulated Brillouin scattering (SBS) amplifier. The low power beam is directed through the same cell in the opposite direction. The majority of the amplification takes place at the focus which is the fourier transform plane of the mask image. The small holes occupy large area at the focus and thus are preferentially amplified. The amplified output is now imaged onto the multichip module where the holes are drilled. Because of the fourier plane amplifier, only about 1/10th the power of a competitive system is needed. This concept allows less expensive masks to be used in the process and requires much less laser power. 1 fig.

Hackel, L.A.; Hermann, M.R.; Dane, C.B.; Tiszauer, D.H.

1995-12-12T23:59:59.000Z

34

Three-dimensional, transient natural convection in inclined wellbores  

SciTech Connect

The occurrence of natural conduction in a wellbore can affect geothermal gradient measurements and heat flow estimates. In the Hot Dry Rock geothermal concept, the wellbores are purposely inclined in the deep regions to enhance heat production. To simulate natural convection flow patterns in directionally drilled wellbores, experiments and analyses were conducted for a circular tube with length to diameter (L/D) ratio of 36 at angles of 0{degrees}, 20{degrees}, and 35{degrees} from the vertical. The tube was heated at the bottom and cooled at the top, and the insulation was adjusted so that approximately one- to two-thirds of the power dissipated was transferred through the tube wall to the surroundings. An aqueous solution of polyvinyl alcohol was employed as the working fluid in order to obtain low Rayleigh numbers corresponding to conditions in geothermal wellbores. Temperature distributions were measured for the three orientations and for several heating rates to demonstrate the effects of tube angle and Rayleigh number. Comparison with measurements showed good agreement of the predicted temperature levels for the maximum inclination and slightly poorer agreement for the other limit, a vertical tube. 50 refs., 9 figs.

McEligot, D.M. (Westinghouse Electric Corp., Middletown, RI (USA). Oceanic Div.); Denbow, D.A. (Software AG of North America, Inc., Lakewood, CO (USA)); Murphy, H.D. (Los Alamos National Lab., NM (USA))

1990-01-01T23:59:59.000Z

35

Natural convection flow over an inclined flat plate with internal heat generation and variable viscosity  

Science Conference Proceedings (OSTI)

The present investigation deals with study of laminar natural convection flow of a viscous fluid over a semi-infinite flat plate inclined at a small angle to the horizontal with internal heat generation and variable viscosity. The dimensionless boundary ... Keywords: Heat generation, Inclined flat surface, Natural convection, Temperature dependent viscosity

S. Siddiqa; S. Asghar; M. A. Hossain

2010-11-01T23:59:59.000Z

36

Flow of fracturing foams in vertical, horizontal and inclined pipes  

E-Print Network (OSTI)

Foams are complex mixtures of a gas and a liquid, with the latter being the continuous phase. The rheological properties of foams are strongly influenced by parameters like temperature, absolute pressure, foam quality, texture, foam-channel wall effects, liquid phase properties, and type and concentration of surfactant. The high solids carrying capacity, the minimum amount of fluid placed in the formation, and the excellent fluid recovery after treatment are some of the advantages that foam fluids present when used during fracturing operations. This thesis is a study of foam flow in pipes, the pressure calculations, the study of rheological properties and their evaluation. The objectives of this research are to: 1. Compare various rheological models representing foams. 2. Develop an algorithm that finds the rheological parameters for the different models at different pressures in the pipe. 3. Provide an engineer with a method that predicts pressure at one end, if pressure at the other end is known, given the rheological parameters of the fluid, the diameter of the pipe and the inlet stream properties. 4. Provide a spreadsheet program for different fluid models that calculates pressures in an inclined, vertical or horizontal pipe. 5. Validate the programs. General curve fitting techniques are used to fit different models: namely, power law, Bingham plastic and Herschel Bulkley models to shear stress vs. shear rate data. The trend of the power law and Bingham plastic rheological parameters with respect to quality is observed. A method to estimate the rheological parameters at different pressures along the pipe using regression methods is developed. Spreadsheet programs for power law Bingham plastic and volume equalized power law model have been developed, which calculate pressures in inclined, horizontal and vertical pipes. The methods for the power law and Bingham plastic fluids are iterative methods. The volume equalized power law program adopts the volume equalized principle, which uses mechanical energy balance with frictional losses calculated from a rheological model. The mechanical energy balance is integrated to obtain a non-linear equation containing the unknown pressure.

Krindinti, Kshipraprasad H

2002-01-01T23:59:59.000Z

37

Experimental and Computational Study of the Inclined Interface Richtmyer-Meshkov Instability  

E-Print Network (OSTI)

A computational and experimental study of the Richtmyer-Meshkov instability is presented here for an inclined interface perturbation. The computational work is composed of simulation studies of the inclined interface RMI performed using the Arbitrary Lagrange Eulerian (ALE) code called ARES. These simulations covered a wide range of Mach numbers (1.2 to 3.5), gas pairs (Atwood numbers 0.23to 0.95), inclination angles (30° to 85°), and explored various perturbation types (both inclined interface and sinusoidal). The computational work included the first parametric study of the inclined interface RMI. This study yielded the first scaling method for the inclined interface RMI mixing width growth rates. It was extended to explore the effect of perturbation linearity and identified that a sharp transition in growth regimes occurs for an initial perturbation inclination angle of 75° with angles below (above) this growing faster (slower). Finally a study of the effects of incident shock strength on the refracted shock wave perturbation decay rate is presented. This study examined how the perturbations induced on the transmitted shock front by the RMI decay with time and found that the decay rates follow a power law model, Alpha=Beta?S^(Epsilon). When the coefficients from the power law decay model were plotted versus Mach number, a distinct transition region was found which is likely a result of the post-shock heavy gas velocity transitioning from the subsonic to supersonic range. The experimental portion of this work was conducted using the TAMUFMSTF, completed in May of 2012. This facility uses a variable inclination shock tube, with a modular construction design for incident shock strengths of up to Mach 3.0. It employs optical systems for measuring density and velocity fields simultaneously using the planar laser induced fluorescence and particle imaging velocimetry techniques. The design and construction of this facility is reviewed in detail in chapter 4 of this work. The initial experiments performed in the TAMUFMSTF provided the first known extensive experimental data for an inclined interface RMI. Planar laser Mie scattering images and velocity vectors were obtained for a N_(2)/CO_(2) interface at a 60° inclination angle and an incident shock strength of Mach 1.55. These images have been compared with simulations made using the ARES codes and have been shown to have some distinct differences. Some of these differences indicate that the initial conditions in the experiments deviate from the ideal planar interface. Other differences have revealed features which have not been resolved by the simulations due to resolution limitations.

Mcfarland, Jacob Andrew

2013-08-01T23:59:59.000Z

38

On the Beta Plane Approximation  

Science Conference Proceedings (OSTI)

The beta plane approximation as it is usually derived suffers from the difficulty that it is only valid if the quasi-geostrophic approximation is made. It is not valid for the underlying momentum and continuity equations. The problem in the ...

W. T. M. Verkley

1990-10-01T23:59:59.000Z

39

Plane and parabolic solar panels  

E-Print Network (OSTI)

We present a plane and parabolic collector that absorbs radiant energy and transforms it in heat. Therefore we have a panel to heat water. We study how to increment this capture of solar beams onto the panel in order to increase its efficiency in heating water.

Sales, J H O

2009-01-01T23:59:59.000Z

40

Plane and parabolic solar panels  

E-Print Network (OSTI)

We present a plane and parabolic collector that absorbs radiant energy and transforms it in heat. Therefore we have a panel to heat water. We study how to increment this capture of solar beams onto the panel in order to increase its efficiency in heating water.

J. H. O. Sales; A. T. Suzuki

2009-05-14T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

The UKIDSS Galactic Plane Survey  

E-Print Network (OSTI)

The UKIDSS Galactic Plane Survey (GPS) is one of the five near infrared Public Legacy Surveys that are being undertaken by the UKIDSS consortium, using the Wide Field Camera on the United Kingdom Infrared Telescope. It is surveying 1868 sq.deg. of the northern and equatorial Galactic plane at Galactic latitudes -5Science results from DR2 and from the Science Verification programme. These results illustrate how GPS data will frequently be combined with data taken in other wavebands to produce scientific results. The Demonstration Science includes studies of: (i) the star formation region G28.983-0.603, cross matching with Spitzer-GLIMPSE data to identify YSOs; (ii) the M17 nebula; (iii) H_2 emission in the rho Ophiuchi dark cloud; (iv) X-ray sources in the Galactic Centre; (v) external galaxies in the Zone of Avoidance; (vi) IPHAS-GPS optical-infrared spectrophotometric typing. (abridged).

P. W. Lucas; M. G. Hoare; A. Longmore; A. C. Schroder; C. J. Davis; A. Adamson; R. M. Bandyopadhyay; R. de Grijs; M. Smith; A. Gosling; S. Mitchison; A. Gaspar; M. Coe; M. Tamura; Q. Parker; M. Irwin; N. Hambly; J. Bryant; R. S. Collins; N. Cross; D. W. Evans; E. Gonzalez-Solares; S. Hodgkin; J. Lewis; M. Read; M. Riello; E. T. W. Sutorius; A. Lawrence; J. E. Drew; S. Dye; M. A. Thompson

2007-12-01T23:59:59.000Z

42

Enrichment of heavy water in flat-plate thermal diffusion columns of the Frazier scheme inclined for improved performance  

SciTech Connect

A separation theory for the enrichment of heavy water in flat-plate thermal diffusion columns of the Frazier scheme inclined for improved performance has been developed. Equations for the best angle of inclination and maximum separation have been derived. Considerable improvement in separation is obtainable if the columns are inclined at the best angle, so that the convective strength can be properly reduced and controlled, resulting in suppression of the undesirable remixing effect while still preserving the desirable cascading effect.

Ho-Ming Yeh [Tamkang Univ., Taiwan (China)

1995-04-01T23:59:59.000Z

43

On the Laws of Geostrophic Drag and Heat Transfer over a Slightly Inclined Terrain  

Science Conference Proceedings (OSTI)

Analytical solutions of a set of equations that couples the Ekman boundary layer and the Prandtl slope wind equations are presented for terrain inclinations with an upper limit of 0.2. With the aid of the logarithmic asymptotes for wind and ...

Lev N. Gutman; JoséW. Melgarejo

1981-08-01T23:59:59.000Z

44

Directional Reactive Power Ground Plane Transmission  

Directional Reactive Power Ground Plane Transmission Technology Summary ... The invention can transmit electrical power through the surface of the ...

45

Focal Plane Instrumentation of VERITAS  

E-Print Network (OSTI)

VERITAS is a new atmospheric Cherenkov imaging telescope array to detect very high energy gamma rays above 100 GeV. The array is located in southern Arizona, USA, at an altitude of 1268m above sea level. The array consists of four 12-m telescopes of Davies-Cotton design and structurally resembling the Whipple 10-m telescope. The four focal plane instruments are equipped with high-resolution (499 pixels) fast photo-multiplier-tube (PMT) cameras covering a 3.5 degree field of view with 0.15 degree pixel separation. Light concentrators reduce the dead-space between PMTs to 25% and shield the PMTs from ambient light. The PMTs are connected to high-speed preamplifiers allowing operation at modest anode current and giving good single photoelectron peaks in situ. Electronics in the focus box provides real-time monitoring of the anode currents for each pixel and ambient environmental conditions. A charge injection subsystem installed in the focus box allows daytime testing of the trigger and data acquisition system by injecting pulses of variable amplitude and length directly into the photomultiplier preamplifiers. A brief description of the full VERITAS focal plane instrument is given in this paper.

VERITAS Collaboration; T. Nagai; R. McKay; G. Sleege; D. Petry

2007-09-28T23:59:59.000Z

46

Numerical solution for mixed convection boundary layer flow of a nanofluid along an inclined plate embedded in a porous medium  

Science Conference Proceedings (OSTI)

The steady mixed convection boundary layer flow of an incompressible nanofluid along a plate inclined at an angle @a in a porous medium is studied. The resulting nonlinear governing equations with associated boundary conditions are solved using an optimized, ... Keywords: FDM, FEM, Inclined plate, Mixed convection, Nanofluid, Porous medium

Puneet Rana; R. Bhargava; O. A. BéG

2012-11-01T23:59:59.000Z

47

PERCOLATION ON THE PROJECTIVE PLANE  

E-Print Network (OSTI)

Since the projective plane is closed, the natural homological observable ofa percolation process is the presence ofthe essential cycle in H1(RP 2; Z2). In the Voroni model at critical phase, pc =.5, this observable has probability q =.5 independent ofthe metric on RP 2. This establishes a single instance (RP 2, homological observable) ofa very general conjecture about the conformal invariance ofpercolation due to Aizenman and Langlands, for which there is much moral and numerical evidence but no previously verified instances. On RP 2 all metrics are conformally equivalent so the proof of metric independence is precisely what the conjecture would predict. What is very special, is that at pc metric invariance holds in all finite models so passing to the limit is trivial; the probability q is fixed at.5 by a topological symmetry.

Michael H. Freedman

1997-01-01T23:59:59.000Z

48

Plane Tree Capital LLP | Open Energy Information  

Open Energy Info (EERE)

Plane Tree Capital LLP Plane Tree Capital LLP Jump to: navigation, search Name Plane Tree Capital LLP Place London, United Kingdom Zip W1J 8DY Sector Carbon Product London-based investment management firm established in to provide investors with well managed exposure to the clean energy and carbon sectors. References Plane Tree Capital LLP[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Plane Tree Capital LLP is a company located in London, United Kingdom . References ↑ "Plane Tree Capital LLP" Retrieved from "http://en.openei.org/w/index.php?title=Plane_Tree_Capital_LLP&oldid=349778" Categories: Clean Energy Organizations Companies Organizations Stubs What links here

49

Monthly optimum inclination of glass cover and external reflector of a basin type solar still with internal and external reflector  

Science Conference Proceedings (OSTI)

In this report, we present a theoretical analysis of a basin type solar still with internal and external reflectors. The external reflector is a flat plate that extends from the back wall of the still, and can presumably be inclined forwards or backwards according to the month. We have theoretically predicted the daily amount of distillate produced by the still throughout the year, which varies according to the inclination angle of both the glass cover and the external reflector, at 30 N latitude. We found the optimum external reflector inclination for each month for a still with a glass cover inclination of 10-50 deg. The increase in the average daily amount of distillate throughout the year of a still with inclined external reflector with optimum inclination in addition to an internal reflector, compared to a conventional basin type still was predicted to be 29%, 43% or 67% when the glass cover inclination is 10 deg, 30 deg or 50 deg and the length of external reflector is half the still's length. (author)

Tanaka, Hiroshi [Mechanical Engineering Department, Kurume National College of Technology, Komorino, Kurume, Fukuoka 830-8555 (Japan)

2010-11-15T23:59:59.000Z

50

PlaneCarbon | Open Energy Information  

Open Energy Info (EERE)

PlaneCarbon PlaneCarbon Jump to: navigation, search Name PlaneCarbon Address 9149 N. 109th Place Place Scottsdale, Arizona Zip 85259 Sector Carbon Product PlaneCarbon Year founded 2002 Number of employees 1-10 Phone number 480-205-0881 Website http://iteknowledgies.com/tran References Iteknowledgies[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! TODO: Determine if all of this content is appropriate and has a neutral point of view. PlaneCarbon, a division of Iteknowledgies International, is a company based in Scottsdale, Arizona. PlaneCarbon purchases carbon credits to achieve carbon neutral operation of your aircraft based on the average utilization of a specific aircraft in hours per year and then calculating the amount of fuel burned and purchasing offsetting carbon credits to achieve carbon

51

Development of an advanced process for drying fine coal in an inclined fluidized bed  

SciTech Connect

The objective of this research project was to demonstrate a technically feasible and economically viable process for drying and stabilizing high-moisture subbituminous coal. Controlled thermal drying of coal fines was achieved using the inclined fluidized-bed drying and stabilization process developed by the Western Research Institute. The project scope of work required completion of five tasks: (1) project planning, (2) characterization of two feed coals, (3) bench-scale inclined fluidized-bed drying studies, (4) product characterization and testing, and (5) technical and economic evaluation of the process. High moisture subbituminous coals from AMAX Eagle Butte mine located in the Powder River Basin of Wyoming and from Usibelli Coal Mine, Inc. in Healy, Alaska were tested in a 10-lb/hr bench-scale inclined fluidized-bed. Experimental results show that the dried coal contains less than 1.5% moisture and has a heating value over 11,500 Btu/lb. The coal fines entrainment can be kept below 15 wt % of the feed. The equilibrium moisture of dried coal was less than 50% of feed coal equilibrium moisture. 7 refs., 60 figs., 47 tabs.

Boysen, J.E.; Cha, C.Y.; Barbour, F.A.; Turner, T.F.; Kang, T.W.; Berggren, M.H.; Hogsett, R.F.; Jha, M.C.

1990-02-01T23:59:59.000Z

52

Modifications of the beam profile in the new inclined crystal geometry  

SciTech Connect

The new inclined crystal geometry has been successfully used in high heat load X-ray monochromator tests. The important aspect of this geometry is that from a diffraction point of view, when properly aligned, is is a symmetric Bragg reflection; i.e., b = k{sub i} . n/k{sub out}.n = {minus}1. An interesting result of this geometry is that with a single reflection from an inclined crystal, the output X-ray beam shape changes dramatically while maintaining the same beam cross section area. For example, a parallel 8 keV input X-ray beam using Si(111) reflection, with an inclination angle of 70.5{degrees}, the output beam size is compressed by about a factor of 5.4 in one direction and expanded by the same factor in the other direction. This geometry can therefore, be used to alter the source line profile of in house X-ray generators and in some cases, be used to better match the sample size and the X-ray beam. The effect of this geometry on beam profiles, beam divergences and acceptance angles will be discussed.

Lee, W.K.; Macrander, A.T.

1991-10-01T23:59:59.000Z

53

A Model Study of the Stably Stratified Steady-State Atmospheric Boundary Layer over a Slightly Inclined Terrain  

Science Conference Proceedings (OSTI)

A simple, steady-state, numerical model is used to examine the Rossby-number similarity theory of the atmospheric boundary layer over a slightly inclined terrain. The model confirms the similarity predictions. The slope-influenced universal ...

Zbigniew Sorbjan

1984-06-01T23:59:59.000Z

54

Capacity of shrinking condensers in the plane  

E-Print Network (OSTI)

We show that the capacity of a class of plane condensers is comparable to the capacity of corresponding "dyadic condensers". As an application, we show that for plane condensers in that class the capacity blows up as the distance between the plates shrinks, but there can be no asymptotic estimate of the blow-up.

Arcozzi, N

2011-01-01T23:59:59.000Z

55

Inertial Recirculation in a ?-Plane Corner  

Science Conference Proceedings (OSTI)

A sub-basin scale recirculation can be driven by imposing low values of potential vorticity in the northwest corner of a ?-Plane box. Mesoscale eddies parametrized by lateral potential vorticity diffusion, carry this anomaly into the interior and ...

G. R. Ierley; W. R. Young

1988-04-01T23:59:59.000Z

56

Rossby Wave Propagation an Beta-Planes  

Science Conference Proceedings (OSTI)

The numerical modeling of stratospheric, quasi-geostrophic Rossby wave propagation on a beta-plane channel is examined to determine how wave propagation is affected by the use of low horizontal (spectral) resolution. This study considers time ...

Donal O'Sullivan

1988-01-01T23:59:59.000Z

57

Barotropic Vortex Evolution on a Beta Plane  

Science Conference Proceedings (OSTI)

A barotropic, primitive equation (shallow water) model is used on the beta plane to investigate the influence of divergence, total relative angular momentum (RAM) and advective nonlinearities on the evolution of a hurricane-like vortex. The ...

Lloyd J. Shapiro; Katsuyuki V. Ooyama

1990-01-01T23:59:59.000Z

58

Barotropic Continental Shelf Waves on a ?-Plane  

Science Conference Proceedings (OSTI)

In this paper we consider the effect of the variation of the Coriolis parameter with latitude on barotropic shelf waves, using a ?-plane model. Solutions are constructed using the method of inner and outer asymptotic expansions, where the inner ...

A. Dorr; R. Grimshaw

1986-08-01T23:59:59.000Z

59

Effects of inclined jets on turbulent oxy-flame characteristics in a triple jet burner  

Science Conference Proceedings (OSTI)

The reactants are generally injected into the industrial furnaces by jets. An effective method to act on combustion in such systems is to control the way injection jets. The present study concerns the control of turbulent flames by the jets deflection in a natural gas-oxygen burner with separated jets. The burner of 25 kW power is constituted with three aligned jets, one central natural gas jet surrounded by two oxygen jets. The principal idea is to confine the fuel jet by oxygen jets to favour the mixing in order to improve the flame stability and consequently to reduce the pollutant emissions like NO{sub x}. The flame stability and its structural properties are analyzed by the OH chemiluminescence. The Particle Image Velocimetry technique has been used to characterize the dynamic field. Results show that the control by inclined jets has a considerable effect on the dynamic behaviour and flame topology. Indeed, the control by incline of oxygen jets towards fuel jet showed a double interest: a better stabilization of flame and a significant reduction of nitrogen oxides. Measurements showed that the deflection favours the mixing and accelerates the fusion of jets allowing the flame stabilization. (author)

Boushaki, T.; Mergheni, M.A.; Sautet, J.C. [CORIA UMR 6614 CNRS-Universite et INSA de ROUEN, Avenue de l'Universite, 76 801 Saint Etienne du Rouvray, Cedex (France); Labegorre, B. [Air Liquide CRCD, Les Loges en Josas, BP 126, 78350 Jouy en Josas (France)

2008-07-15T23:59:59.000Z

60

Is it a bird? Or a plane? It's a solar plane! | Department of Energy  

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

Is it a bird? Or a plane? It's a solar plane! Is it a bird? Or a plane? It's a solar plane! Is it a bird? Or a plane? It's a solar plane! May 14, 2013 - 5:20pm Addthis Solar Impulse's HB-SIA prototype is starting the crossing of America. First leg is Moffett Airfield at the Ames Research Center of NASA to Phoenix Sky Harbour Airport. Solar Impulse will fly across America in stages from San Francisco to Washington D.C. and New York City. | Photo by Fred Merz, Solar Impulse. Solar Impulse's HB-SIA prototype is starting the crossing of America. First leg is Moffett Airfield at the Ames Research Center of NASA to Phoenix Sky Harbour Airport. Solar Impulse will fly across America in stages from San Francisco to Washington D.C. and New York City. | Photo by Fred Merz, Solar Impulse. Solar Impulse's HB-SIA prototype. | Photo by J. Revillard, Solar Impulse.

Note: This page contains sample records for the topic "guideways inclined plane" 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

Effect of variation of angle of inclination on the performance of low-concentration-ratio compound parabolic concentrating solar collectors  

SciTech Connect

Thermal heat transfer in line-axis, symmetric, compound parabolic concentrating solar energy collectors (CPCs) has been investigated and a theoretical numerical model has been developed. The model allows the effect of the angle of axial inclination of an east-west aligned CPC and hence the effect of the latitudinal and tracking configuration of the CPC system on performance to be determined. The internal and external convective heat transfer correlations employed are angular dependent. The variation of convective, radiative, conductive and overall heat transfer coefficients and system efficiency for a range of angular inclinations, concentration ratios, total insolations and beam to diffuse insolation factors are presented graphically. The results demonstrate that there is a 10% variation in convective heat transfer with angle of inclination for low concentration CPCs (i.e. C=1.5). 13 refs., 12 figs., 2 tabs.

A.F. Kothdiwala; Norton, B.; Eames, P.C. [Univ. of Ulster, Antrim (United Kingdom)

1995-12-31T23:59:59.000Z

62

Coordinated cutting plane generation via multi-objective separation  

E-Print Network (OSTI)

May 12, 2012. Abstract. In cutting plane ... We propose a lexicographic multi- objective cutting plane generation scheme that generates, among all the maximally ...

63

GROUND PLANE INSULATION FAILURE IN THE FIRST TPC SUPERCONDUCTING COIL  

E-Print Network (OSTI)

is WIUUTEO GROUND PLANE INSULATION FAILURE IN THE FIRST TPCOn August 27, 1980, an insulation failure occurred dt-ringby a failure uf ground plane insulation. ACKNOWLEDGMENTS The

Green, M.A.

2010-01-01T23:59:59.000Z

64

A RANDOMIZED CUTTING PLANE METHOD WITH ...  

E-Print Network (OSTI)

uniform generation of random points in the convex body is available. Under this ... A center of gravity version of cutting plane, for a slightly different problem ... which is updated at each step and is guaranteed to always contain the feasible set. First of ...... The method was tested over a range of problems whose data were.

65

Gravity current down a steeply inclined slope in a rotating fluid G. I. Shapiro, A. G. Zatsepin  

E-Print Network (OSTI)

Gravity current down a steeply inclined slope in a rotating fluid G. I. Shapiro, A. G. Zatsepin P filled with water of constant density. A bottom gravity current was produced by injecting more dense was developed for a strongly non-linear gravity current forming a near-bottom density front. The theory takes

Paris-Sud XI, Université de

66

HIGH-MASS, FOUR-PLANET CONFIGURATIONS FOR HR 8799: CONSTRAINING THE ORBITAL INCLINATION AND AGE OF THE SYSTEM  

SciTech Connect

Debates regarding the age and inclination of the planetary system orbiting HR 8799, and the release of additional astrometric data following the discovery of the fourth planet, prompted us to examine the possibility of constraining these two quantities by studying the long-term stability of this system at different orbital inclinations and in its high-mass configuration (7-10-10-10 M{sub Jup}). We carried out {approx}1.5 million N-body integrations for different combinations of orbital elements of the four planets. The most dynamically stable combinations survived less than {approx}5 Myr at inclinations of 0 Degree-Sign and 13 Degree-Sign , and 41, 46, and 31 Myr at 18 Degree-Sign , 23 Degree-Sign , and 30 Degree-Sign , respectively. Given such short lifetimes and the location of the system on the age-luminosity diagram for low-mass objects, the most reasonable conclusion of our study is that the planetary masses are less than 7-10-10-10 M{sub Jup} and the system is quite young. Two trends to note from our work are as follows. (1) In the most stable systems, the higher the inclination, the more the coordinates for planets b and c diverge from the oldest archival astrometric data (released after we completed our N-body integrations), suggesting that either these planets are in eccentric orbits or have lower orbital inclinations than that of planet d. (2) The most stable systems place planet e closer to the central star than is observed, supporting the conclusion that the planets are more massive and the system is young. We present the details of our simulations and discuss the implications of the results.

Sudol, Jeffrey J. [Department of Physics, West Chester University, 720 S. Church Street, West Chester, PA 19383 (United States); Haghighipour, Nader, E-mail: jsudol@wcupa.edu, E-mail: nader@ifa.hawaii.edu [Institute for Astronomy and NASA Astrobiology Institute, University of Hawaii-Manoa, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)

2012-08-10T23:59:59.000Z

67

Split-field pupil plane determination apparatus  

DOE Patents (OSTI)

A split-field pupil plane determination apparatus (10) having a wedge assembly (16) with a first glass wedge (18) and a second glass wedge (20) positioned to divide a laser beam (12) into a first laser beam half (22) and a second laser beam half (24) which diverge away from the wedge assembly (16). A wire mask (26) is positioned immediately after the wedge assembly (16) in the path of the laser beam halves (22, 24) such that a shadow thereof is cast as a first shadow half (30) and a second shadow half (32) at the input to a relay telescope (14). The relay telescope (14) causes the laser beam halves (22, 24) to converge such that the first shadow half (30) of the wire mask (26) is aligned with the second shadow half (32) at any subsequent pupil plane (34).

Salmon, Joseph T. (Livermore, CA)

1996-01-01T23:59:59.000Z

68

Selection and reconstruction of very inclined air showers with the Surface Detector of the Pierre Auger Observatory  

Science Conference Proceedings (OSTI)

The water-Cherenkov tanks of the Pierre Auger Observatory can detect particles at all zenith angles and are therefore well-suited for the study of inclined and horizontal air showers (60 degrees geomagnetic field. Dedicated algorithms for the selection and reconstruction of such events, as well as the corresponding acceptance calculation, have been set up on basis of muon maps obtained from shower simulations.

Newton, D.; /Santiago de Compostela U.

2007-06-01T23:59:59.000Z

69

Hydromagnetic Instability in plane Couette Flow  

E-Print Network (OSTI)

We study the stability of a compressible magnetic plane Couette flow and show that compressibility profoundly alters the stability properties if the magnetic field has a component perpendicular to the direction of flow. The necessary condition of a newly found instability can be satisfied in a wide variety of flows in laboratory and astrophysical conditions. The instability can operate even in a very strong magnetic field which entirely suppresses other MHD instabilities. The growth time of this instability can be rather short and reach $\\sim 10$ shear timescales.

Bonanno, Alfio

2007-01-01T23:59:59.000Z

70

Shock Waves in Plane Symmetric Spacetimes  

E-Print Network (OSTI)

We consider Einstein's equations coupled to the Euler equations in plane symmetry, with compact spatial slices and constant mean curvature time. We show that for a wide variety of equations of state and a large class of initial data, classical solutions break down in finite time. The key mathematical result is a new theorem on the breakdown of solutions of systems of balance laws. We also show that an extension of the solution is possible if the spatial derivatives of the energy density and the velocity are bounded, indicating that the breakdown is really due to the formation of shock waves.

Alan D. Rendall; Fredrik Ståhl

2008-06-10T23:59:59.000Z

71

Energy Distribution of Black Plane Solutions  

E-Print Network (OSTI)

We use the Einstein energy-momentum complex to calculate the energy distribution of static plane-symmetric solutions of the Einstein-Maxwell equations in 3+1 dimensions with asymptotic anti-de Sitter behavior. This solution is expressed in terms of three parameters: the mass, electric charge and cosmological constant. We compare the energy distribution to that of the Reissner-Nordstrom-anti-de Sitter solution, pointing to qualitative differences between the models. Finally, we examine these results within the context of the Cooperstock hypothesis.

Paul Halpern

2005-05-11T23:59:59.000Z

72

The Propagation Mechanism of a Vortex on the ? Plane  

Science Conference Proceedings (OSTI)

The propagation velocity and propagation mechanism for vortices on a ? plane are determined for a reduced-gravity model by integrating the momentum equations over the ? plane. Isolated vortices, vortices in a background current, and initial ...

Peter Jan van Leeuwen

2007-09-01T23:59:59.000Z

73

Projective Plane And Planar Quantum Codes  

E-Print Network (OSTI)

Cellulations of the projective plane RP 2 define single qubit topological quantum error correcting codes since there is a unique essential cycle in H 1 (RP 2 ; Z 2 ). We construct three of the smallest such codes, show they are inequivalent, and identify one of them as Shor's original 9 qubit repetition code. We observe that Shor's code can be constructed in a planar domain and generalize to planar constructions of higher genus codes for multiple qubits. PACS numbers: 03.67.Lx, 89.70.+c, 89.80.+h. AMS subject classification: 94Bxx, 81P99, 57M20. KEY WORDS: topological code, quantum error correction, planar code. Projective plane and planar quantum codes Freedman & Meyer Kitaev has constructed a class of quantum error correcting codes using qubits arranged on the edges of square lattices embedded in the two dimensional torus [1]. While these toric codes are not particularly efficient---they do not come close to saturating the quantum Hamming bound [2]---they are nevertheless inte...

Michael H. Freedman; David A. Meyer

1998-01-01T23:59:59.000Z

74

Wavelet Algorithm for the Numerical Solution of Plane Elasticity Problem  

Science Conference Proceedings (OSTI)

In this paper, we apply Shannon wavelet and Galerkin method to deal with the numerical solution of the natural boundary integral equation of plane elasticity probem in the upper half-plane. The fast algorithm is given and only 3 entries need ... Keywords: Galerkin-wavelet method, Shannon wavelet, natural integral equation, plane elasticity problem

Youjian Shen; Wei Lin

2001-12-01T23:59:59.000Z

75

Coordinated cutting plane generation via multi-objective separation  

E-Print Network (OSTI)

Jun 23, 2011 ... We propose a lexicographic multi-objective cutting plane generation scheme that generates, ... Mathematical Programming A. pp 1-24 (2012).

76

In-Plane Compressive Properties of Hybrid Dyneema®/Carbon ...  

Science Conference Proceedings (OSTI)

Presentation Title, In-Plane Compressive Properties of Hybrid Dyneema®/ Carbon Fiber Reinforced Polymer Matrix Composites. Author(s), Shahram Amini, John ...

77

MHK Technologies/C Plane | Open Energy Information  

Open Energy Info (EERE)

to the MHK database homepage C Plane.jpg Technology Profile Primary Organization Aquantis Inc Technology Resource Click here Current Technology Type Click here Cross Flow...

78

Black holes and black strings in plane waves  

E-Print Network (OSTI)

We investigate the construction of black holes and black strings in vacuum plane wave spacetimes using the method of matched asymptotic expansions. We find solutions of the linearised equations of motion in the asymptotic region for a general source on a plane wave background. We observe that these solutions do not satisfy our previously defined conditions for being asymptotically plane wave. We consider the solution in the near region, treating the plane wave as a perturbation of a black object, and find that there is a regular black string solution but no regular black hole solution.

Witt, Julian Le

2009-01-01T23:59:59.000Z

79

Nonlinear Waves and Coherent Vortex Structures in Barotropic ?-plane Jets  

Science Conference Proceedings (OSTI)

We examine the nonlinear evolution of barotropic ?-plane jets on a periodic domain with a pseudospectral. A calculation of the linear growth rate yields an infected U-shaped curve on the ? versus k0 plane which separates regions of stability and ...

G. R. Flierl; P. Malanotte-Rizzoli; N. J. Zabusky

1987-09-01T23:59:59.000Z

80

Kinetic and stationary point-set embeddability for plane graphs  

Science Conference Proceedings (OSTI)

We investigate a kinetic version of point-set embeddability. Given a plane graph G(V,E) where |V|=n, and a set P of n moving points where the trajectory of each point is an algebraic function of constant ... Keywords: kinetic algorithm, kinetic graph drawing, plane graph, point-set embeddability

Zahed Rahmati; Sue H. Whitesides; Valerie King

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Clique problem, cutting plane proofs and communication complexity  

Science Conference Proceedings (OSTI)

Motivated by its relation to the length of cutting plane proofs for the Maximum Biclique problem, we consider the following communication game on a given graph G with maximum bipartite clique size K. Two parties separately receive disjoint subsets A, ... Keywords: Clique problem, Communication complexity, Computational complexity, Cutting plane proof

Stasys Jukna

2012-10-01T23:59:59.000Z

82

MHK Technologies/WavePlane | Open Energy Information  

Open Energy Info (EERE)

WavePlane WavePlane < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage WavePlane.jpg Technology Profile Primary Organization WavePlane A S Project(s) where this technology is utilized *MHK Projects/WavePlane Prototype 1 Technology Resource Click here Wave Technology Type Click here Overtopping Device Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description The WavePlane is a V-shaped design, which is anchored with the head up against the incoming waves. Below the waterline the device is fitted with an artificial beach, which is designed to improve the capture of wave energy. The WavePlane is symmetrical in its construction. Each side captures the water from the waves of various heights. The device splits the oncoming waves with a series of intakes, known as lamellas, which guide the captured water into a 'flywheel tube.' The fast moving vortex that is formed then forces the water across two turbines, which are located at the ends of the two 'V-shaped legs'. Finally the water is discharged back into the ocean.

83

Consejos para Ahorrar Gasolina - Planee y Combine Viajes  

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

Planee y Combine Viajes Combinar Viajes Combinar viajes puede ahorrarle tiempo y dinero. Varios viajes cortos en los que usted enciende su coche estando este fro, pueden usar el...

84

Mathematical Description of the Shape of Plane Hexagonal Snow Crystals  

Science Conference Proceedings (OSTI)

Simple mathematical expressions are presented for describing the shapes of some plane hexagonal snow crystals. These expressions provide convenient means for cloud physical calculations and can also serve as a method for quantitative ...

P. K. Wang; S. M. Denzer

1983-04-01T23:59:59.000Z

85

The Generalization of Semigeostrophic Theory to the ?-Plane  

Science Conference Proceedings (OSTI)

We develop here the isentropic–geostrophic coordinate version of semigeostrophic theory on a midlatitude ?-plane. This approach results in a simple mathematical form in which the horizontal ageostrophic velocities are implicit and the entire ...

Gudrun Magnusdottir; Wayne H. Schubert

1990-07-01T23:59:59.000Z

86

Freely Propagating Trench Waves on a Beta-Plane  

Science Conference Proceedings (OSTI)

The dispersion relation is derived for trapped freely propagating barotropic long trench waves on a midlatitude ?-plane. It is found that a critical wavenumber kc, which depends on trench orientation and wave frequency, partitions the behavior of ...

Andrew J. Willmott; Arlene A. Bird

1983-09-01T23:59:59.000Z

87

Slow Evolution of Zonal Jets on the Beta Plane  

Science Conference Proceedings (OSTI)

The authors study the stability of a barotropic sinusoidal meridional flow on a ? plane. Because of bottom drag and lateral viscosity, the system is dissipative and forcing maintains a basic-state velocity that carries fluid across the planetary ...

A. J. Manfroi; W. R. Young

1999-03-01T23:59:59.000Z

88

Noise-Induced Transitions in a Barotropic ?-Plane Channel  

Science Conference Proceedings (OSTI)

The concepts of multiplicative stochastic perturbations and noise-induced transitions are applied to a quasigeostrophic ?-plane model of barotropic flow over topography. The spectral three-component low-order representation of this configuration ...

Philip Sura

2002-01-01T23:59:59.000Z

89

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 101, NO. B5, PAGES 11,655-11,663, MAY 10, 1996 Geomagnetic field inclinations for the past 400 kyr from the  

E-Print Network (OSTI)

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 101, NO. B5, PAGES 11,655-11,663, MAY 10, 1996 Geomagnetic Institute of Technology, Pasadena Abstract. A volcanic record of geomagnetic field inclination for the past of the geomagnetic field. The secular variation has a mean of 30.9° (95= 2.27°), which is significantly shallower

Bruck, Jehoshua (Shuki)

90

General Solutions to Static Plane Symmetric Einstein's Equations  

E-Print Network (OSTI)

A general formula for the metric as an explicit function of the generic energy-momentum tensor is given which satisfies static plane symmetric Einstein's equations with cosmological constant.In order to illustrate it, the solutions for the vacuum with cosmological constant, the perfect fluid with a linear equation of state and the electrically charged plane are derived and compared with known results. The general solution with a linear relation among the energy-momentum tensor components is also obtained.

Leandro G. Gomes

2013-08-23T23:59:59.000Z

91

Event-plane flow analysis without nonflow effects  

SciTech Connect

The event-plane method, which is widely used to analyze anisotropic flow in nucleus-nucleus collisions, is known to be biased by nonflow effects, especially at high p{sub t}. Various methods (cumulants, Lee-Yang zeros) have been proposed to eliminate nonflow effects, but their implementation is tedious, which has limited their application so far. In this article, we show that the Lee-Yang-zeroes method can be recast in a form similar to the standard event-plane analysis. Nonflow correlations are strongly suppressed by using the information from the length of the flow vector, in addition to the event-plane angle. This opens the way to improved analyses of elliptic flow and azimuthally sensitive observables at the Relativistic Heavy Ion Collider and the Large Hadron Collider.

Bilandzic, Ante; Kolk, Naomi van der [Nikhef, Science Park 105, 1098 XG Amsterdam (Netherlands); Utrecht University, P. O. Box 80000, 3508 TA Utrecht (Netherlands); Ollitrault, Jean-Yves [Institut de Physique Theorique, CEA-Saclay, F-91191 Gif-sur-Yvette cedex (France); Snellings, Raimond [Utrecht University, P. O. Box 80000, 3508 TA Utrecht (Netherlands)

2011-01-15T23:59:59.000Z

92

$SQED_4$ and $QED_4$ on the null-plane  

E-Print Network (OSTI)

We studied the scalar electrodynamics ($SQED_{4}$) and the spinor electrodynamics ($QED_{4}$) in the null-plane formalism. We followed the Dirac's technique for constrained systems to perform a detailed analysis of the constraint structure in both theories. We imposed the appropriated boundary conditions on the fields to fix the hidden subset first class constraints which generate improper gauge transformations and obtain an unique inverse of the second class constraint matrix. Finally, choosing the null-plane gauge condition, we determined the generalized Dirac brackets of the independent dynamical variables which via the correspondence principle give the (anti)-commutators for posterior quantization.

R. Casana; B. M. Pimentel; G. E. R. Zambrano

2008-03-18T23:59:59.000Z

93

An Analytic Center Cutting Plane Approach for Conic Programming  

Science Conference Proceedings (OSTI)

We analyze the problem of finding a point strictly interior to a bounded, convex, and fully dimensional set from a finite dimensional Hilbert space. We generalize the results obtained for the linear programming (LP), semidefinite programming (SDP), and ... Keywords: analytic center, conic programming, cutting plane, cutting surface, feasibility problem

Vasile L. Basescu; John E. Mitchell

2008-08-01T23:59:59.000Z

94

Tangencies between families of disjoint regions in the plane  

Science Conference Proceedings (OSTI)

Let C be a family of n convex bodies in the plane, which can be decomposed into k subfamilies of pairwise disjoint sets. It is shown that the number of tangencies between the members of C is at most O(kn), and that this bound cannot be improved. If we ... Keywords: Arrangements, Convexity, Tangencies

János Pach; Andrew Suk; Miroslav Treml

2012-04-01T23:59:59.000Z

95

Thermally Forced Surface Winds on an Equatorial Beta Plane  

Science Conference Proceedings (OSTI)

The vertical structure of the low-level atmospheric response to an elevated large-scale, low-frequency heat source in the Tropics is explored using linear tidal theory on an equatorial beta plane. Through the calculation of the projection of a ...

Zhaohua Wu; E. S. Sarachik; David S. Battisti

1999-06-01T23:59:59.000Z

96

A Geosolitary Wave Solution on an f Plane  

Science Conference Proceedings (OSTI)

This paper presents an exact solution for nonlinear shallow-water waves on an f plane. It is a long wave satisfying the hydrostatic balance. It is also a solitary wave maintained by the balance of a dispersion effect of Coriolis force and the ...

Chunyan Li

2004-04-01T23:59:59.000Z

97

Alignment of Hurricane-like Vortices on f and ? Planes  

Science Conference Proceedings (OSTI)

A nonlinear, two-layer, vortex-tracking semispectral model (i.e., Fourier transformed in azimuth only) is used to study the evolution of dry, but otherwise hurricane-like, initially tilted vortices in quiescent surroundings on f and ? planes. The ...

Robert W. Jones; Hugh E. Willoughby; Michael T. Montgomery

2009-06-01T23:59:59.000Z

98

Projecting diffusion along the normal bundle of a plane curve  

E-Print Network (OSTI)

The purpose of this paper is to provide new formulas for the estimation of the effective diffusion coefficient of an equation of Fick-Jacob's type obtained by projecting the two-dimensional diffusion equation along the normal direction of an arbitrary plane curve.

Carlos Valero Valdes; Rafael Herrera Guzman

2013-08-21T23:59:59.000Z

99

MHK Projects/WavePlane Prototype 1 | Open Energy Information  

Open Energy Info (EERE)

WavePlane Prototype 1 WavePlane Prototype 1 < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":57.1343,"lon":8.60719,"alt":0,"address":"","icon":"http:\/\/prod-http-80-800498448.us-east-1.elb.amazonaws.com\/w\/images\/7\/74\/Aquamarine-marker.png","group":"","inlineLabel":"","visitedicon":""}]}

100

The Bolocam Galactic Plane Survey: Survey Description and Data Reduction  

E-Print Network (OSTI)

We present the Bolocam Galactic Plane Survey (BGPS), a 1.1 mm continuum survey at 33" effective resolution of 170 square degrees of the Galactic Plane visible from the northern hemisphere. The survey is contiguous over the range -10.5 90%) and the linear scale at which the attenuation re aches 50% is 3.8'. Comparison with other millimeter-wave data sets implies a possible systematic offset in flux calibration, for which no cause has been discovered. This presentation serves as a companion and guide to the public data release through NASA's Infrared Processing and Analysis Center (IPAC) Infrared Science Archive (IRSA). New data releases will be provided through IPAC IRSA with any future improvements in the reduction.

Aguirre, James E; Dunham, Miranda K; Drosback, Meredith M; Bally, John; Battersby, Cara; Bradley, Eric Todd; Cyganowski, Claudia; Dowell, Darren; Evans, Neal J; Glenn, Jason; Harvey, Paul; Rosolowsky, Erik; Stringfellow, Guy S; Walawender, Josh; Williams, Jonathan P

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Electromagnetic Casimir Energies of Semi-Infinite Planes  

E-Print Network (OSTI)

Using recently developed techniques based on scattering theory, we find the electromagnetic Casimir energy for geometries involving semi-infinite planes, a case that is of particular interest in the design of microelectromechanical devices. We obtain both approximate analytic formulae and exact results requiring only modest numerical computation. Using these results, we analyze the effects of edges and orientation on the Casimir energy. We also demonstrate the accuracy, simplicity, and utility of our approximation scheme, which is based on a multiple reflection expansion.

Mohammad F. Maghrebi; Noah Graham

2011-02-08T23:59:59.000Z

102

Angle amplifying optics using plane and ellipsoidal reflectors  

DOE Patents (OSTI)

An optical system for providing a wide angle input beam into ellipsoidal laser fusion target illumination systems. The optical system comprises one or more pairs of centrally apertured plane and ellipsoidal mirrors disposed to accept the light input from a conventional lens of modest focal length and thickness, to increase the angular divergence thereof to a value equivalent to that of fast lenses, and to direct the light into the ellipsoidal target illumination system.

Glass, Alexander J. (Pleasanton, CA)

1977-01-01T23:59:59.000Z

103

Acoustic plane wave preferential orientation of metal oxide superconducting materials  

DOE Patents (OSTI)

A polycrystalline metal oxide such as YBa.sub.2 Cu.sub.3 O.sub.7-X (where 0plane, a high degree of crystalline axes alignment is provided between adjacent grains permitting the conduction of high current densities. With the superconducting metal oxide in the form of a ceramic slip which has not yet set, orientation of the crystal basal planes parallel with the direction of desired current flow is accomplished by an applied acoustic plane wave in the acoustic or ultrasonic frequency range (either progressive or standing) in applying a torque to each crystal particle. The ceramic slip is then set and fired by conventional methods to produce a conductor with preferentially oriented grains and substantially enhanced current carrying capacity.

Tolt, Thomas L. (North Olmsted, OH); Poeppel, Roger B. (Glen Ellyn, IL)

1991-01-01T23:59:59.000Z

104

Non-modal analysis of the diocotron instability: Plane geometry  

Science Conference Proceedings (OSTI)

The comprehensive investigation of the temporal evolution of the diocotron instability of the plane electron strip on the linear stage of its development is performed. By using the method of Kelvin of the shearing modes, the role of the initial perturbations of the electron density is elucidated, which is connected with the problem of the continuous spectrum. The linear non-modal evolution process detected by the solution of the initial value problem, leads toward convergence to the phase-locking configuration of the mutually growing normal modes.

Mikhailenko, V. V. [Research Institute of Computer, Information and Communication, Pusan National University, Busan 609735 (Korea, Republic of); June Lee, Hae [Department of Electrical Engineering, Pusan National University, Busan 609-735 (Korea, Republic of); Mikhailenko, V. S. [V.N. Karazin Kharkov National University, 61108 Kharkov (Ukraine)

2012-08-15T23:59:59.000Z

105

Coordinate Conditions for a Uniformly Accelerated or Static Plane Symmetric  

E-Print Network (OSTI)

The coordinate conditions for three exact solutions for the metric components of a coordinate system with constant acceleration or of a static plane symmetric gravitational field are presented. First, the coordinate condition that the acceleration of light is constant is applied to the field equations to derive the metric of a coordinate system of constant acceleration. Second, the coordinate conditions required to produce the metrics of Rindler and Lass are applied to the field equations to calculate the components of these two metrics and the coordinate velocities and coordinate accelerations for light of these two metrics are compared to the coordinate system of constant acceleration. 1 I.

unknown authors

2004-01-01T23:59:59.000Z

106

Plane Parallel Albedo Biases from Satellite Observations. Part II: Parameterizations for Bias Removal  

Science Conference Proceedings (OSTI)

Using the same satellite observations as in Part I of this paper, the authors explore ways to remove the cloud albedo bias (or plane parallel albedo bias), the difference between the plane parallel homogeneous albedo and the average albedo of ...

Lazaros Oreopoulos; Roger Davies

1998-05-01T23:59:59.000Z

107

iPlane Nano: Path Prediction for Peer-to-Peer Applications Harsha V. Madhyastha  

E-Print Network (OSTI)

iPlane Nano: Path Prediction for Peer-to-Peer Applications Harsha V. Madhyastha Ethan Katz present the design and implementa- tion of iPlane Nano, a library for delivering Internet path information to peer-to-peer applications. iPlane Nano is itself a peer-to-peer application, and scales to a large

Krishnamurthy, Arvind

108

Performance characteristics of open-flow liquid desiccant solar collector/regenerator for solar cooling applications. Part I: two dimensional analysis of heat and mass transfer for open flow over rough inclined surfaces  

DOE Green Energy (OSTI)

This work presents an analytical approach to simulate the combined heat and mass transfer on the interface between wetted collector surface and ambient air. Emphasis was placed on the development of a mathematical model of turbulent natural convection on an inclined rough plate. The effect of surface velocity is also considered. The systems of partial differential equations governing fluid motion, heat and mass transfer along an inclined flat plate were formulated in terms of vorticity transport and stream function equations. One-equation model of turbulence was used to compute the turbulent viscosity. The length scale used in this model was expressed algebraically in terms of the mixing length. A length scale modified function was derived to take into account the bouyancy effects on turbulence. The effect of surface roughness was taken into a account by introducing a characteristic roughness length. A computational technique was developed to solve the resulting elliptic partial differential equations. This technique involved an 'inflow-outflow' scheme to determine the free boundary conditions at the leading and trailing edges of the inclined plate. The validity of this computational technique was tested and confirmed by some testing problems. Among these are (1) laminar natural convection on an inclined isothermal plate (2) turbulent natural convection on a vertical isothermal plate and (3) turbulent natural convection on an inclined constant heat flux flat plate.

Not Available

1983-11-01T23:59:59.000Z

109

Radiation of Electron in the Field of Plane Light Wave  

SciTech Connect

Results of integration of a Lorentz equation for a relativistic electron moving in the field of running, plane, linear polarized electromagnetic wave are presented in the paper. It is shown that electron velocities in the field of the wave are almost periodic functions of time. For calculations of angular spectrum of electron radiation intensity expansion of the electromagnetic field in a wave zone into generalized Fourier series was used. Expressions for the radiation intensity spectrum are presented in the paper. Derived results are illustrated for electron and laser beam parameters of NSC KIPT X-ray generator NESTOR. It is shown that for low intensity of the interacting electromagnetic wave the results of energy and angular spectrum calculations in the frame of classical electrodynamics completely coincide with calculation results produced using quantum electrodynamics. Simultaneously, derived expressions give possibilities to investigate dependence of energy and angular Compton radiation spectrum on phase of interaction and the interacting wave intensity.

Zelinsky, A.; Drebot, I.V.; Grigorev, Yu.N.; Zvonareva, O.D.; /Kharkov, KIPT; Tatchyn, R.; /SLAC

2006-02-24T23:59:59.000Z

110

THE BOLOCAM GALACTIC PLANE SURVEY: SURVEY DESCRIPTION AND DATA REDUCTION  

SciTech Connect

We present the Bolocam Galactic Plane Survey (BGPS), a 1.1 mm continuum survey at 33'' effective resolution of 170 deg{sup 2} of the Galactic Plane visible from the northern hemisphere. The BGPS is one of the first large area, systematic surveys of the Galactic Plane in the millimeter continuum without pre-selected targets. The survey is contiguous over the range -10.5 {<=} l {<=} 90.5, |b| {<=} 0.5. Toward the Cygnus X spiral arm, the coverage was flared to |b| {<=} 1.5 for 75.5 {<=} l {<=} 87.5. In addition, cross-cuts to |b| {<=} 1.5 were made at l= 3, 15, 30, and 31. The total area of this section is 133 deg{sup 2}. With the exception of the increase in latitude, no pre-selection criteria were applied to the coverage in this region. In addition to the contiguous region, four targeted regions in the outer Galaxy were observed: IC1396 (9 deg{sup 2}, 97.5 {<=} l {<=} 100.5, 2.25 {<=} b {<=} 5.25), a region toward the Perseus Arm (4 deg{sup 2} centered on l = 111, b = 0 near NGC 7538), W3/4/5 (18 deg{sup 2}, 132.5 {<=} l {<=} 138.5), and Gem OB1 (6 deg{sup 2}, 187.5 {<=} l {<=} 193.5). The survey has detected approximately 8400 clumps over the entire area to a limiting non-uniform 1{sigma} noise level in the range 11-53 mJy beam{sup -1} in the inner Galaxy. The BGPS source catalog is presented in a previously published companion paper. This paper details the survey observations and data reduction methods for the images. We discuss in detail the determination of astrometric and flux density calibration uncertainties and compare our results to the literature. Data processing algorithms that separate astronomical signals from time-variable atmospheric fluctuations in the data timestream are presented. These algorithms reproduce the structure of the astronomical sky over a limited range of angular scales and produce artifacts in the vicinity of bright sources. Based on simulations, we find that extended emission on scales larger than about 5.'9 is nearly completely attenuated (>90%) and the linear scale at which the attenuation reaches 50% is 3.'8. Comparison with other millimeter-wave data sets implies a possible systematic offset in flux calibration, for which no cause has been discovered. This presentation serves as a companion and guide to the public data release (http://irsa.ipac.caltech.edu/Missions/bolocam.html) through NASA's Infrared Processing and Analysis Center (IPAC) Infrared Science Archive (IRSA). New data releases will be provided through IPAC-IRSA with any future improvements in the reduction. The BGPS provides a complementary long-wavelength spectral band for the ongoing ATLASGAL and Herschel-SPIRE surveys, and an important database and context for imminent observations with SCUBA-2 and ALMA.

Aguirre, James E. [Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA (United States); Ginsburg, Adam G.; Bally, John; Battersby, Cara; Glenn, Jason; Harvey, Paul; Stringfellow, Guy S. [CASA, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Dunham, Miranda K.; Evans, Neal J. II [Department of Astronomy, University of Texas, 1 University Station C1400, Austin, TX 78712 (United States); Drosback, Meredith M. [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Bradley, Eric Todd [Department of Physics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL 32816-2385 (United States); Cyganowski, Claudia [Department of Astronomy, University of Wisconsin, Madison, WI 53706 (United States); Dowell, Darren [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91104 (United States); Rosolowsky, Erik [Department of Physics and Astronomy, University of British Columbia, Okanagan (Canada); Walawender, Josh [Institute for Astronomy, University of Hawaii, 640 North Aohoku Place, Hilo, HI 96720 (United States); Williams, Jonathan P., E-mail: jaguirre@sas.upenn.edu [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)

2011-01-15T23:59:59.000Z

111

The Search for a Finite Projective Plane of Order 10 - CECM  

E-Print Network (OSTI)

In about 1957, at a Chinese restaurant in Chicago, Reinhold Baer, another mathematician well known for his work in group theory and projective planes, was ...

112

Maximum likelihood blind image separation using nonsymmetrical half-plane Markov random fields  

Science Conference Proceedings (OSTI)

This paper presents a maximum likelihood approach for blindly separating linear instantaneous mixtures of images. The spatial autocorrelation within each image is described using non-symmetrical half-plane (NSHP) Markov random fields in order to simplify ... Keywords: blind source separation (BSS), maximum likelihood approach, nonstationary sources, nonsymmetrical half-plane (NSHP) Markov random fields

Rima Guidara; Shahram Hosseini; Yannick Deville

2009-11-01T23:59:59.000Z

113

Elastoplastic implicit integration algorithm applicable to both plane stress and three-dimensional stress states  

Science Conference Proceedings (OSTI)

An elastoplastic implicit integration algorithm applicable to both plane stress and three-dimensional stress states is developed for a general class of combined nonlinear kinematic-isotropic hardening models. The algorithm is first built for three-dimensional ... Keywords: Constitutive models, Implicit integration, Plane stress, Plasticity, Three-dimensional stress

Nobutada Ohno; Masatoshi Tsuda; Takafumi Kamei

2013-04-01T23:59:59.000Z

114

Singularities around the QCD critical point in the complex chemical potential plane  

E-Print Network (OSTI)

We consider thermodynamic singularities appearing in the complex chemical potential plane in the vicinity of QCD critical point. In order to investigate what the singularities are like in a concrete form, we resort to an effective theory based on a mean field approach. We study the behavior of extrema of the real part of the complex effective potential in the complex order parameter plane.

Shinji Ejiri; Yasuhiko Shinno; Hiroshi Yoneyama

2013-11-24T23:59:59.000Z

115

Research for the Crane Boom Length Coefficient Considering the Tower Head Flexibility in Rotary Plane  

Science Conference Proceedings (OSTI)

When the crane boom length in rotary plane is determined, the traditional methods only consider support condition, non-uniform, boom end lateral displacement constraint effect of amplitude dragline and hoist rope tensile forces. Ignoring tower head elastic ... Keywords: Equivalent elastic support method, Rotary plane, Tower head flexibility, Non-conservative loading, Length coefficient

Zhang Guangyun; Lan Peng; Lu Nianli

2011-01-01T23:59:59.000Z

116

A Scaling Theory for Horizontally Homogeneous, Baroclinically Unstable Flow on a Beta Plane  

Science Conference Proceedings (OSTI)

The scaling argument developed by the authors in a previous work for eddy amplitudes and fluxes in a horizontally homogeneous, two-layer model on an f plane is extended to a ? plane. In terms of the nondimensional number ?=U/(??2), where ? is the ...

Isaac M. Held; Vitaly D. Larichev

1996-04-01T23:59:59.000Z

117

Simple SQP approach for out-of-plane loaded homogenized brickwork panels, accounting for softening  

Science Conference Proceedings (OSTI)

A simple homogenized model for the non linear analysis of masonry walls out-of-plane loaded is presented. In the model, the panels are assumed to behave as Kirchhoff-Love plates. A rectangular running bond elementary cell (RVE) is subdivided into several ... Keywords: Homogenization, Masonry, Out-of-plane loads, Quadratic programming

Gabriele Milani; Antonio Tralli

2011-01-01T23:59:59.000Z

118

Fast plane wave density functional theory molecular dynamics calculations on multi-GPU machines  

Science Conference Proceedings (OSTI)

Plane wave pseudopotential (PWP) density functional theory (DFT) calculation is the most widely used method for material simulations, but its absolute speed stagnated due to the inability to use large scale CPU based computers. By a drastic redesign ... Keywords: Density functional theory, Electronic structure, First-principles, GPU, Molecular dynamics, Plane wave pseudopotential

Weile Jia, Jiyun Fu, Zongyan Cao, Long Wang, Xuebin Chi, Weiguo Gao, Lin-Wang Wang

2013-10-01T23:59:59.000Z

119

Large-eddy simulation of a plane reacting jet transversely injected into supersonic turbulent channel flow  

Science Conference Proceedings (OSTI)

A plane, chemically reacting jet of fuel injected through a narrow spanwise slot into supersonic and fully turbulent air flow in a channel with isothermal, parallel walls is investigated using a semi-implicit large-eddy simulation technique. It is based ... Keywords: high-order numerical schemes, infinitely fast chemistry, large-eddy simulation, plane jet in crossflow, supersonic turbulent channel flow

Ch. Schaupp; R. Friedrich

2010-12-01T23:59:59.000Z

120

System and method for generating a deselect mapping for a focal plane array  

DOE Patents (OSTI)

A method for generating a deselect mapping for a focal plane array according to one embodiment includes gathering a data set for a focal plane array when exposed to light or radiation from a first known target; analyzing the data set for determining which pixels or subpixels of the focal plane array to add to a deselect mapping; adding the pixels or subpixels to the deselect mapping based on the analysis; and storing the deselect mapping. A method for gathering data using a focal plane array according to another embodiment includes deselecting pixels or subpixels based on a deselect mapping; gathering a data set using pixels or subpixels in a focal plane array that are not deselected upon exposure thereof to light or radiation from a target of interest; and outputting the data set.

Bixler, Jay V; Brandt, Timothy G; Conger, James L; Lawson, Janice K

2013-05-21T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

2011 HM102: Discovery of a High-Inclination L5 Neptune Trojan in the Search for a post-Pluto New Horizons Target  

E-Print Network (OSTI)

We present the discovery of a long-term stable L5 (trailing) Neptune Trojan in data acquired to search for candidate Trans-Neptunian objects for the New Horizons spacecraft to fly by during an extended post-Pluto mission. This Neptune Trojan, 2011 HM102, has the highest inclination (29.4 degrees) of any known member of this population. It is intrinsically brighter than any single L5 Jupiter Trojan at H_V ~ 8.18. We have determined its gri colors (a first for any L5 Neptune Trojan), which we find to be similar to the moderately red colors of the L4 Neptune Trojans, indicating similar surface properties for members of both Trojan clouds. We also present colors derived from archival data for two L4 Neptune Trojans (2006 RJ103 and 2007 VL305), better refining the overall color distribution of the population. In this document we describe the discovery circumstances, our physical characterization of 2011 HM102, and this object's implications for the Neptune Trojan population overall. Finally, we discuss the prospec...

Parker, Alex H; Osip, David J; Gwyn, Stephen D J; Holman, Matthew J; Borncamp, David M; Spencer, John R; Benecchi, Susan D; Binzel, Richard P; DeMeo, Francesca E; Fabbro, Sebastian; Fuentes, Cesar I; Gay, Pamela L; Kavelaars, J J; McLeod, Brian A; Petit, Jean-Marc; Sheppard, Scott S; Stern, S Alan; Tholen, David J; Trilling, David E; Ragozzine, Darin A; Wasserman, Lawrence H; Hunters, the Ice

2012-01-01T23:59:59.000Z

122

Radiative transfer in plane-parallel media and Cauchy integral equations II. The H-function  

E-Print Network (OSTI)

In the central part of this paper, we revisit the classical study of the H-function defined as the unique solution, regular in the right complex half-plane, of a Cauchy integral equation. We take advantage of our work on the N-function published in the first article of this series. The H-function is then used to solve a class of Cauchy integral equations occurring in transfer problems posed in plane-parallel media. We obtain a concise expression of the unique solution analytic in the right complex half-plane, then modified with the help of the residue theorem for numerical calculations.

B. Rutily; J. Bergeat; L. Chevallier

2006-01-16T23:59:59.000Z

123

A Radiative Upper Boundary Condition Adapted for f-Plane Models  

Science Conference Proceedings (OSTI)

Under the assumption of weak background rotational and wind shear effects, an attractive computational upper boundary condition capable of transmitting gravity waves is generalized for use in a variety of f-plane models. Issues relating to ...

Stephen T. Garner

1986-08-01T23:59:59.000Z

124

ON CO-H-MAPS TO THE SUSPENSION OF THE PROJECTIVE PLANE  

E-Print Network (OSTI)

Abstract. We study co-H-maps from a suspension to the suspension of the projective plane and provide examples of non-suspension 3-cell co-H-spaces. 1.

J. Wu

2001-01-01T23:59:59.000Z

125

Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Area |  

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

Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Area Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Area June 17, 2013 - 6:15pm Addthis Watch Energy Secretary Ernest Moniz give remarks at the Solar Impulse Press Conference in Washington, D.C. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs More on Solar Impulse View a slideshow of photos from today's event on Secretary Moniz's Facebook Page. Today, Secretary Moniz spoke at an event welcoming the arrival of the solar-powered Solar Impulse plane at Dulles International Airport near Washington, D.C. During the event, held at the National Air and Space Museum's Steven F. Udvar-Hazy Center, Secretary Moniz highlighted the rapid expansion of the solar industry in the United States over the past

126

Radiative transfer in plane-parallel media and Cauchy integral equations III. The finite case  

E-Print Network (OSTI)

We come back to the Cauchy integral equations occurring in radiative transfer problems posed in finite, plane-parallel media with light scattering taken as monochromatic and isotropic. Their solution is calculated following the classical scheme where a Cauchy integral equation is reduced to a couple of Fredholm integral equations. It is expressed in terms of two auxiliary functions $\\zeta_+$ and $\\zeta_-$ we introduce in this paper. These functions show remarkable analytical properties in the complex plane. They satisfy a simple algebraic relation which generalizes the factorization relation of semi-infinite media. They are regular in the domain of the Fredholm integral equations they satisfy, and thus can be computed accurately. As an illustration, the X- and Y-functions are calculated in the whole complex plane, together with the extension in this plane of the so-called Sobouti's functions.

B. Rutily; L. Chevallier; J. Bergeat

2006-01-16T23:59:59.000Z

127

Thermally Forced Stationary Axisymmetric Flow on the f Plane in a Nearly Frictionless Atmosphere  

Science Conference Proceedings (OSTI)

This paper investigates stationary axisymmetric balanced flow of a stably stratified dry non-Boussinesq atmosphere on the f plane. The circulation is forced in the troposphere through thermal relaxation toward a specified equilibrium temperature ...

Volkmar Wirth

1998-10-01T23:59:59.000Z

128

On the Motion of Isolated Lenses on a Beta-Plane  

Science Conference Proceedings (OSTI)

This paper examines the motion and propagation of an isolated of anomalous water on a beta-plane, considered previously by Nof (1981). His perturbation analysis is extended to show the following:

Peter D. Killworth

1983-03-01T23:59:59.000Z

129

A Parameterization of Transient Eddy Heat Flux on a Beta-Plane  

Science Conference Proceedings (OSTI)

A parameterization of transient eddy heat flux is developed which incorporates baroclinic wave behavior in a continuously stratified fluid on a ?-plane. The meridional and vertical heat transports are more sensitive to forced changes in the mean ...

Lee E. Branscome

1983-10-01T23:59:59.000Z

130

Intense Vortex Motion on the Beta Plane: Development of the Beta Gyres  

Science Conference Proceedings (OSTI)

An analytical theory is presented for the self-induced translation of an intense vortex relative to a uniform background flow on the ? plane. The equivalent barotropic approximation is used to formulate the initial value problem within a polar ...

Georgi G. Sutyrin; Glenn R. Flierl

1994-03-01T23:59:59.000Z

131

The Search for a Finite Projective Plane of Order 10 - CECM  

E-Print Network (OSTI)

The Search for a Finite Projective Plane of Order 10. C. W. H. Lam gif. Computer Science Department Concordia University Montr?al Qu?bec Canada H3G 1M8.

132

Self-tuning Fuzzy Control Method Based on the Trajectory Performance of the Phase Plane  

E-Print Network (OSTI)

The phase plane is already an important method to design fuzzy control systems and analyze their stability. The concept of the real-time response trajectory characteristic vectors and angles between the real-time characteristic vectors on the phase plane are put forward in this paper according to the analysis of the response trajectory performance on the phase plane of a fuzzy control system. The method of rule self-tuning fuzzy control based on the response trajectory performance on phase plane is presented by analyzing the characteristics of angles between the real-time characteristic vectors. The simulation results show that the method is not only capable of increasing greatly the ability to identify and describe the plant in small error, reducing the overshoot, settle time greatly and improving the convergence speed of the fuzzy control system, but also possesses a simple arithmetic and does not require much more storage space and calculation time.

Zhang, J.; Chen, Y.; Xiong, J.

2006-01-01T23:59:59.000Z

133

Response of a grooved plate subjected to out-of-plane contact loading  

E-Print Network (OSTI)

The response of a grooved plate subjected to out-of-plane contact loading is examined. The influence of selected geometric and loading parameters are investigated, as well as the effects of various boundary conditions. The ...

Bastien, Christopher J

2008-01-01T23:59:59.000Z

134

Long Atmospheric Waves and the Polar-Plane Approximation to the Earth’s Spherical Geometry  

Science Conference Proceedings (OSTI)

The spherical geometry of the earth is replaced by polar cylindrical geometry, with a plane tangential to the earth at the pole. The resulting frequency and structure of free motions in an isothermal, adiabatic atmosphere with a resting basic ...

Alison F. C. Bridger; Duane E. Stevens

1980-03-01T23:59:59.000Z

135

The Plane-Parallel Albedo Bias of Liquid Clouds from MODIS Observations  

Science Conference Proceedings (OSTI)

The authors present the global plane-parallel shortwave albedo bias of liquid clouds for two months, July 2003 and January 2004. The cloud optical properties necessary to perform the bias calculations come from the operational Moderate Resolution ...

Lazaros Oreopoulos; Robert F. Cahalan; Steven Platnick

2007-10-01T23:59:59.000Z

136

The temperature field around a spherical ridge or trough in a plane  

SciTech Connect

An analytical solution, which describes the temperature field around a single spherical particle partly embedded in a plane or around a trough making an arbitrary contact angle with a plane, is presented here. The temperature distributions for three cases are studied: the temperature distribution around a conducting bowl or trough, the temperature distribution around a non-conducting bowl or trough present in a conducting plane, and the temperature profile around a conducting bowl or trough conducting heat toward a sink at infinity. The normalized heat flux distribution on the plane and particle is presented. The various incremental resistances caused by a single and a dilute planar random array of truncated spherical particles are also derived.

Fransaer, J.; Roos, J.R. (Katholieke Univ. Leuven, Heverlee (Belgium))

1992-05-01T23:59:59.000Z

137

Experimental evaluation of the in-plane seismic behavior of store-front window systems  

E-Print Network (OSTI)

J. , (1960). Behavior of window panels under in-planeC. , (1997). Behavior of window glass panels duringBehavior of Store-front Window Systems A thesis submitted in

Eva, Charles Almond

2009-01-01T23:59:59.000Z

138

Novel Charging Station and Computational Modeling for High Thermal Conductivity Heat Pipe Thermal Ground Planes.  

E-Print Network (OSTI)

??Thermal ground planes (TGPs) are planar, thin (thickness of 3 mm or less) heat pipes which use two-phase heat transfer. TGPs are innovative high-performance, integrated… (more)

Ababneh, Mohammed

2012-01-01T23:59:59.000Z

139

Floer cohomology in the mirror of the projective plane and a binodal cubic curve  

E-Print Network (OSTI)

We construct a family of Lagrangian submanifolds in the Landau-Ginzburg mirror to the projective plane equipped with a binodal cubic curve as anticanonical divisor. These objects correspond under mirror symmetry to the ...

Pascaleff, James Thomas

2011-01-01T23:59:59.000Z

140

Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Area |  

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

Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Area Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Area June 17, 2013 - 6:15pm Addthis Watch Energy Secretary Ernest Moniz give remarks at the Solar Impulse Press Conference in Washington, D.C. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs More on Solar Impulse View a slideshow of photos from today's event on Secretary Moniz's Facebook Page. Today, Secretary Moniz spoke at an event welcoming the arrival of the solar-powered Solar Impulse plane at Dulles International Airport near Washington, D.C. During the event, held at the National Air and Space Museum's Steven F. Udvar-Hazy Center, Secretary Moniz highlighted the rapid expansion of the solar industry in the United States over the past

Note: This page contains sample records for the topic "guideways inclined plane" 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

Explicit solution by radicals, gonal maps and plane models of algebraic curves of genus 5 or 6  

Science Conference Proceedings (OSTI)

We give explicit computational algorithms to construct minimal degree (always =Keywords: Algebraic curves, Gonality, Plane models, Radical parametrisation

Michael Harrison

2013-04-01T23:59:59.000Z

142

Computation of VLF response over half-plane and wedge models  

SciTech Connect

A theoretical solution is presented to the problem where a VLF anomaly is generated by a conducting half-plane or a perfectly conducting wedge below a stratified overburden. The solution is obtained by the use of a scattering matrix for plane-wave eigenfunctions. VLF anomalies have been computed for different values of the conductance and dip of the halfplane. The phase of the VLF anomaly due to a conducting half-plane depends on the conductance and the distance to the half-plane. Close to the half-plane the tilt angle and ellipticity are of opposite sign for a perfect conductor, but the ellipticity will change sign for a poor conductor. The VLF anomaly for a perfectly conducting wedge is essentially determined by the position of the upper surface of the wedge, i.e. the anomaly will closely resemble the anomaly of a perfectly conducting half-plane in the same position as the upper surface of the wedge.

Olsson, O.

1983-02-01T23:59:59.000Z

143

It's a bird...It's a plane...It's an intern! | Department of Energy  

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

It's a bird...It's a plane...It's an intern! It's a bird...It's a plane...It's an intern! It's a bird...It's a plane...It's an intern! June 28, 2013 - 12:00pm Addthis EM Office of External Affairs Acting Communications Director Dave Borak talks with EM intern Valerie Edwards. EM Office of External Affairs Acting Communications Director Dave Borak talks with EM intern Valerie Edwards. Experienced Pilot and Robot Builder Lands Summer Internship at EM Only 22 years old, Valerie Edwards has accomplished significant feats, from flying airplanes to building award-winning robots. Now, Edwards is ready to achieve more as a DOE Office of Environmental Management (EM) Office of External Affairs intern. Her assignment: help improve EM's public communications across the DOE complex. Edwards is poring over the websites of EM sites to determine ways to better

144

Finite-amplitude inhomogeneous plane waves in a deformed Mooney-Rivlin material  

E-Print Network (OSTI)

The propagation of finite-amplitude linearly-polarized inhomogeneous transverse plane waves is considered for a Mooney-Rivlin material maintained in a state of finite static homogeneous deformation. It is shown that such waves are possible provided that the directions of the normal to the planes of constant phase and of the normal to the planes of constant amplitude are orthogonal and conjugate with respect to the B-ellipsoid, where B is the left Cauchy-Green strain tensor corresponding to the initial deformation. For these waves, it is found that even though the system is non-linear, results on energy flux are nevertheless identical with corresponding results in the classical linearized elasticity theory. Byproducts of the results are new exact static solutions for the Mooney-Rivlin material.

Michel Destrade

2013-06-02T23:59:59.000Z

145

The Bolocam Galactic Plane Survey -- II. Catalog of the Image Data  

E-Print Network (OSTI)

We present a catalog of 8358 sources extracted from images produced by the Bolocam Galactic Plane Survey (BGPS). The BGPS is a survey of the millimeter dust continuum emission from the northern Galactic plane. The catalog sources are extracted using a custom algorithm, Bolocat, which was designed specifically to identify and characterize objects in the large-area maps generated from the Bolocam instrument. The catalog products are designed to facilitate follow-up observations of these relatively unstudied objects. The catalog is 98% complete from 0.4 Jy to 60 Jy over all object sizes for which the survey is sensitive (=(-0.095 +/- 0.001) deg.

Rosolowsky, Erik; Ginsburg, Adam; Bradley, Eric Todd; Aguirre, James; Bally, John; Battersby, Cara; Cyganowski, Claudia; Dowell, Darren; Drosback, Meredith; Evans, Neal J; Glenn, Jason; Harvey, Paul; Stringfellow, Guy S; Walawender, Josh; Williams, Jonathan P

2009-01-01T23:59:59.000Z

146

Solid explosive plane-wave lenses pressed-to-shape with dies  

SciTech Connect

Solid-explosive plane-wave lenses 1", 2" and 4¼" in diameter have been mass-produced from components pressed-to-shape with aluminum dies. The method used to calculate the contour between the solid plane-wave lens components pressed-to-shape with the dies is explained. The steps taken to press, machine, and assemble the lenses are described. The method of testing the lenses, the results of those tests, and the corrections to the dies are reviewed. The work on the ½", 8", and 12" diameter lenses is also discussed.

Olinger, B.

2007-11-01T23:59:59.000Z

147

Undirected postman problems with zigzagging option: A cutting-plane approach  

Science Conference Proceedings (OSTI)

The paper devises a new model and associated cutting-plane and branch-and-cut approaches for a variant of the undirected Chinese and rural postman problem where some of the edges offer the flexibility of either being serviced twice by two separate traversals ... Keywords: Polyhedral theory, Postman problems, Zigzagging

Stefan Irnich

2008-12-01T23:59:59.000Z

148

Mercury-cadmium-telluride focal plane array performance under non-standard operating conditions  

Science Conference Proceedings (OSTI)

This paper highlights a new technique that allows the Teledyne Scientific & Imaging LLC TCM6604A Mercury-Cadmium-Telluride (MCT) Focal Plane Array (FPA) to operate at room temperature. 12 The Teledyne MCT FPA has been a standard in Imaging Spectroscopy ...

Brandon S. Richardson; Michael L. Eastwood; Carl F. Bruce; Robert O. Green; J. B. Coles

2011-03-01T23:59:59.000Z

149

Minimizing interference of a wireless ad-hoc network in a plane  

Science Conference Proceedings (OSTI)

We consider the problem of topology control of a wireless ad-hoc network on a given set of points in the plane, where we aim to minimize the maximum interference by assigning a suitable transmission radius to each point. By using computational geometric ...

Magnús M. Halldórsson; Takeshi Tokuyama

2006-07-01T23:59:59.000Z

150

An analytic center cutting plane approach for conic programming Vasile L Basescu  

E-Print Network (OSTI)

An analytic center cutting plane approach for conic programming Vasile L Basescu email: vbasescu;2 Basescu and Mitchell: ACCPM for conic programming u 0, u IRn u1 n i=2 u2 i . The induced cone - analytic center ^yi from the previous one ^yi-1. #12;Basescu and Mitchell: ACCPM for conic programming 3 We

Mitchell, John E.

151

Computer-aided modeling of superconducting striplines with ground planes using critical state models  

E-Print Network (OSTI)

for publication 29 May 2001 The effect of ground planes on the current-induced critical states and flux and the field and current distribution10,11 and the surface impedance from hysteretic loss4 was obtained penetration for a thin superconducting strip carrying a microwave current has been calculated numerically

Sridhar, Srinivas

152

Albedo of a Forest Modeled as a Plane with Dense Protrusions  

Science Conference Proceedings (OSTI)

A model is developed that treats, in a simplified way, the reflection of the direct solar radiation by a surface consisting of a soil-plane and protruding vertical plant elements, such as needles of pine trees or stalks of a wheat field. Such a ...

J. Otterman

1984-02-01T23:59:59.000Z

153

The stability of Killing-Cauchy horizons in colliding plane wave space-times  

E-Print Network (OSTI)

It is confirmed rigorously that the Killing-Cauchy horizons, which sometimes occur in space-times representing the collision and subsequent interaction of plane gravitational waves in a Minkowski background, are unstable with respect to bounded perturbations of the initial waves, at least for the case in which the initial waves have constant aligned polarizations.

J. B. Griffiths

2005-01-05T23:59:59.000Z

154

Formation of capillary structures with highly viscous fluids in plane microchannels  

E-Print Network (OSTI)

as enhanced oil recovery,1 biodiesel production,2 and crude oil processing.3 Thick materials, such as glycerol time of thread structures in the plane channel allows us to produce various degrees of fold coalescence, oils, concentrated emulsions, or mucus, are common in nature and industrial processes. In general

Cubaud, Thomas

155

Focal plane instrumentation for the Wide-Field X-ray Telescope  

E-Print Network (OSTI)

The three X-ray imaging focal planes of the Wide-Field X-ray Telescope (WFXT) Mission will each have a field of view up to 1 degree square, pixel pitch smaller than 1 arcsec, excellent X-ray detection efficiency and spectral ...

Bautz, Marshall W.

156

Effects of size, shape, crystal plane and atomic discrete structure on interactions between carbon nanoparticles  

Science Conference Proceedings (OSTI)

Understanding various interaction forces between building blocks is of great importance to their selfassembly. In this paper, the effects of size, crystal plane, shape and atomic discrete structure on interaction potentials between carbon nanoparticles ... Keywords: Hamaker approach, carbon, interaction, molecular dynamics simulation, nanoparticle

Weifu Sun; Qinghua Zeng; Aibing Yu

2012-02-01T23:59:59.000Z

157

Time-Dependent Response to Cooling in a Beta-Plane Basin  

Science Conference Proceedings (OSTI)

The time-dependent response of an ocean basin to the imposition of cooling (or heating) is examined in the context of a quasigeostrophic, two-layer model on the beta plane. The focus is on the structure and magnitude of the vertical motion and ...

Joseph Pedlosky

2006-11-01T23:59:59.000Z

158

A 610-MHz Galactic Plane Pulsar Search with the Giant Meterwave Radio Telescope  

E-Print Network (OSTI)

We report on the discovery of three new pulsars in the first blind survey of the north Galactic plane (45 < l < 135 ; |b| < 1) with the Giant Meterwave Radio telescope (GMRT) at an intermediate frequency of 610 MHz. The timing parameters, obtained in follow up observations with the Lovell Telescope at Jodrell Bank Observatory and the GMRT, are presented.

B. C. Joshi; M. A. McLaughlin; M. Kramer; A. G. Lyne; D. R. Lorimer; D. A. Ludovici; M. Davies; A. J. Faulkner

2007-10-16T23:59:59.000Z

159

Electromagnetic plane waves with negative phase velocity in charged black strings  

SciTech Connect

We investigate the propagation regions of electromagnetic plane waves with negative phase velocity in the ergosphere of static charged black strings. For such a propagation, some conditions for negative phase velocity are established that depend on the metric components and the choice of the octant. We conclude that these conditions remain unaffected by the negative values of the cosmological constant.

Sharif, M., E-mail: msharif.math@pu.edu.pk; Manzoor, R., E-mail: rubabmanzoor9@yahoo.com [University of the Punjab, Department of Mathematics (Pakistan)

2013-02-15T23:59:59.000Z

160

Raman spectra of out-of-plane phonons in bilayer graphene  

E-Print Network (OSTI)

The double resonance Raman spectra of the overtone of the out-of-plane tangential optical (oTO) phonon and of combinations of the LO, ZO, and ZA phonons with one another are calculated for bilayer graphene. In the case of ...

Sato, Kentaro

Note: This page contains sample records for the topic "guideways inclined plane" 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

Identification of A Population of X-ray-emitting Massive Stars in the Galactic Plane  

E-Print Network (OSTI)

We present X-ray, infrared, optical, and radio observations of four previously unidentified Galactic plane X-ray sources: AX J163252-4746, AX J184738-0156, AX J144701-5919, and AX J144547-5931. Detection of each source ...

Anderson, Gemma E.

162

Euler elasticae in the plane and the Whitney--Graustein theorem  

E-Print Network (OSTI)

In this paper, we apply classical energy principles to Euler elasticae, i.e., closed C^2 curves in the plane supplied with the Euler functional U (the integral of the square of the curvature along the curve). We study the critical points of U, find the shapes of the curves corresponding to these critical points and show which of the critical points are stable equilibrium points of the energy given by U, and which are unstable. It turns out that the set of stable equilibrium points coincides with the set of minima of U, so that the corresponding shapes of the curves obtained may be regarded as normal forms of Euler elasticae. In this way, we find the solution of the Euler problem (set in 1744) for plane closed elasticae. As a by-product, we obtain a "mechanical" proof of the Whitney--Graustein theorem on the classification of regular curves in the plane up to regular homotopy (in the particular case of C^2 curves). Besides mathematical theorems, our work includes a computer graphics software which shows, as an animation, how any plane curve evolves to its normal form under a discretized version of gradient descent along the (discretized) Euler functional.

Sergey Avvakumov; Oleg Karpenkov; Alexey Sossinsky

2013-03-03T23:59:59.000Z

163

Barotropic Beta-Plane Turbulence in a Regime with Strong Zonal Jets Revisited  

Science Conference Proceedings (OSTI)

The problem of quantification of barotropic beta-plane turbulence driven by small-scale stochastic forcing into regimes dominated by quasi-periodic zonal jets is revisited. It is shown that the large-scale relative vorticity in such regimes is ...

S. Danilov; V. M. Gryanik

2004-09-01T23:59:59.000Z

164

Sedimentology of Pennsylvanian sandstone from bedding-plane exposures, Laurel dam spillway, eastern Kentucky Coalfield  

SciTech Connect

Exposures of bedding planes in a coarsening-upward sequence of the Breathitt Formation at the Laurel Dam spillway in Whitley County, Kentucky, were analyzed by surveying a 250,000-ft{sup 2} area on a 10-ft grid and mapping within grids.

Greb, S.F.; Chesnut, D.R. Jr. (Kentucky Geological Survey, Lexington (USA))

1989-08-01T23:59:59.000Z

165

Planckian Energy Scattering, Colliding Plane Gravitational Waves and Black Hole Creation  

E-Print Network (OSTI)

In a series of papers Amati, Ciafaloni and Veneziano and 't Hooft conjectured that black holes occur in the collision of two light particles at planckian energies. In this paper we discuss a possible scenario for such a process by using the Chandrasekhar-Ferrari-Xanthopoulos duality between the Kerr black hole solution and colliding plane gravitational waves. We clarify issues arising in the definition of transition amplitude from a quantum state containing only usual matter without black holes to a state containing black holes. Collision of two plane gravitational waves producing a space-time region which is locally isometric to an interior of black hole solution is considered. The phase of the transition amplitude from plane waves to white and black hole is calculated by using the Fabbrichesi, Pettorino, Veneziano and Vilkovisky approach. An alternative extension beyond the horizon in which the space-time again splits into two separating gravitational waves is also discussed. Such a process is interpreted as the scattering of plane gravitational waves through creation of virtual black and white holes.

I. Ya. Aref'eva; K. S. Viswanathan; I. V. Volovich

1994-12-18T23:59:59.000Z

166

Barotropic Equatorial Waves: The Nonuniformity of the Equatorial Beta-Plane  

Science Conference Proceedings (OSTI)

Some equatorially trapped motions cannot be modeled by the equatorial beta-plane. Our proof is a counter-example: if the zonal wavenumber m is large, barotropic Rossby-Haurwitz waves decay with latitude outside a narrow band about the equator and ...

John P. Boyd

1985-09-01T23:59:59.000Z

167

An approach to localize the retinal blood vessels using bit planes and centerline detection  

Science Conference Proceedings (OSTI)

The change in morphology, diameter, branching pattern or tortuosity of retinal blood vessels is an important indicator of various clinical disorders of the eye and the body. This paper reports an automated method for segmentation of blood vessels in ... Keywords: Bit plane slicing, Blood vessel segmentation, First order derivative of Gaussian, Image segmentation, Mathematical morphology, Medical imaging, Retinal image, Ocular fundus

M. M. Fraz; S. A. Barman; P. Remagnino; A. Hoppe; A. Basit; B. Uyyanonvara; A. R. Rudnicka; C. G. Owen

2012-11-01T23:59:59.000Z

168

Toward free-surface modeling of planing vessels: simulation of the Fridsma hull using ALE-VMS  

Science Conference Proceedings (OSTI)

In this paper we focus on a class of applications involving surface vessels moving at high speeds, or "planing". We introduce a Fridsma planing hull benchmark problem, and simulate it using the finite-element-based ALE-VMS (Bazilevs et al. in Math Models ... Keywords: ALE-VMS, Finite elements, Fluid/rigid---body interaction, Free-surface flow, Fridsma planing hull, Level set, Ship hydrodynamics

I. Akkerman; J. Dunaway; J. Kvandal; J. Spinks; Y. Bazilevs

2012-12-01T23:59:59.000Z

169

On the electrical properties of slotted metallic planes in CMOS processes for RF and millimeter-wave applications  

Science Conference Proceedings (OSTI)

This paper presents a study of the effects of slotted metallic planes in passive structures built using CMOS processes for RF and millimeter-wave (mmW) applications. The impact of holes on the reference plane resistance and in the capacitance of any ... Keywords: CMOS manufacturing, Electromagnetic analysis, Interconnections, Metal density rules, Transmission lines, mmW integrated circuits

José Luis GonzáLez; Baudouin Martineau; Didier Belot

2012-08-01T23:59:59.000Z

170

Using ARM data to correct plane-parallel satellite retrievals of cloud  

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

Using ARM data to correct plane-parallel satellite retrievals of cloud Using ARM data to correct plane-parallel satellite retrievals of cloud properties Dong, Xiquan University of North Dakota Minnis, Patrick NASA Langley Research Center Xi, Baike University of North Dakota Khaiyer, Mandana Analytical Services and Material, Inc. Category: Cloud Properties The angular variations of cloud properties derived from GOES data are examined using simultaneously collocated ARM surface observations/retrievals at the DOE ARM SGP site during the 6-yr period from January 1997 to December 2002. The dependencies of GOES cloud retrievals on solar zenith angle (SZA), scattering angle (SCA), and relative azimuth angle (RZA) are investigated for single-layer and overcast low-level stratus clouds. The GOES-retrieved cloud-droplet effective radius (re),

171

Benchmark Models, Planes, Lines and Points for Future SUSY Searches at the LHC  

E-Print Network (OSTI)

We define benchmark models for SUSY searches at the LHC, including the CMSSM, NUHM, mGMSB, mAMSB, MM-AMSB and p19MSSM, as well as models with R-parity violation and the NMSSM. Within the parameter spaces of these models, we propose benchmark subspaces, including planes, lines and points along them. The planes may be useful for presenting results of the experimental searches in different SUSY scenarios, while the specific benchmark points may serve for more detailed detector performance tests and comparisons. We also describe algorithms for defining suitable benchmark points along the proposed lines in the parameter spaces, and we define a few benchmark points motivated by recent fits to existing experimental data.

S. S. AbdusSalam; B. C. Allanach; H. K. Dreiner; J. Ellis; U. Ellwanger; J. Gunion; S. Heinemeyer; M. Kraemer; M. L. Mangano; K. A. Olive; S. Rogerson; L. Roszkowski; M. Schlaffer; G. Weiglein

2011-09-18T23:59:59.000Z

172

Dynamics of Charged-particle Between the DC Voltage Biased Plane-Parallel Conductors  

E-Print Network (OSTI)

The analytic description to an oscillating charged-particle between the DC voltage biased plane-parallel conductors is presented. Contrary to the traditional belief in which the oscillatory behavior of the charged-particle in a uniform DC field is attributed to the reversal in the sign of the particle's charge polarity as it rebounds between the two electrodes, the analytic description of the phenomenon presented in this work reveals that such requirement is not necessary for the charged-particle oscillation. Since the system involves a spatially oscillating charged-particle, it represents a natural prototype for illuminating electric dipole radiation. By varying the DC bias voltage across the plane-parallel electrodes, the frequency of radiated electromagnetic waves can be adjusted. The device based on charged-particle oscillation is predicted to generate the coherent electromagnetic waves in the microwave to the X-ray regions of the spectrum, which includes the technologically important terahertz, the infra...

Cho, Sung Nae

2011-01-01T23:59:59.000Z

173

Structural phase transitions and out-of-plane dust lattice instabilities in vertically confined plasma crystals  

E-Print Network (OSTI)

The formation of plasma crystals confined in an external one-dimensional parabolic potential well is simulated for a normal experimental environment employing a computer code called BOXITREE. Under appropriate conditions, crystals were found to form layered systems. The system's structural phase transitions, including transitions between crystals with differing numbers of layers and the same number of layers but different intralayer structures, were investigated and found to agree with previous theoretical and experimental research results. One- to two-layer transitions were examined in detail and shown to start at the point where the out-of-plane lattice instability appears. The resulting three layer system caused by this instability was observed at the center of the system. Finally, growth rates for this out-of-plane lattice instability were obtained using the BOXITREE simulation with these results shown to agree with those obtained from analytical theory.

K. Qiao; T. W. Hyde

2005-03-08T23:59:59.000Z

174

Solar-Driven Background Intensity Variations in a Focal Plane Array  

Science Conference Proceedings (OSTI)

Portions of a series of end-of-life tests are described for a Sandia National Li~boratories- designed space-based sensor that utilizes a mercury-cadmium-telluride focal plane array. Variations in background intensity are consistent with the hypothesis that seasonal variations in solar position cause changes in the pattern of shadows falling across the compartment containing the optical elements, filter-band components, and focal plane array. When the sensor compartment is most fully illuminated by the sun, background intensities are large and their standard deviations tend to be large. During the winter season, when the compartment is most fully shadowed by surrounding structure, backgrounci intensities are small and standard deviations tend to be small. Details in the surrounding structure are speculated to produce transient shadows that complicate background intensifies as a function of time or of sensor position in orbit.

Eyer, H.H.; Guillen, J.L.L.; Vittitoe, C.N.

1998-12-03T23:59:59.000Z

175

Simulations of partially coherent focal plane imaging arrays: Fisher matrix approach to performance evaluation  

E-Print Network (OSTI)

Focal plane arrays of bolometers are increasingly employed in astronomy at far--infrared to millimetre wavelengths. The focal plane fields and the detectors are both partially coherent in these systems, but no account has previously been taken of the effect of partial coherence on array performance. In this paper, we use our recently developed coupled--mode theory of detection together with Fisher information matrix techniques from signal processing to characterize the behaviour of partially coherent imaging arrays. We investigate the effects of the size and coherence length of both the source and the detectors, and the packing density of the array, on the amount of information that can be extracted from observations with such arrays.

George Saklatvala; Michael P. Hobson; Stafford Withington

2007-03-07T23:59:59.000Z

176

A MILLIMETER-WAVE GALACTIC PLANE SURVEY WITH THE BICEP POLARIMETER  

Science Conference Proceedings (OSTI)

In order to study inflationary cosmology and the Milky Way Galaxy's composition and magnetic field structure, Stokes I, Q, and U maps of the Galactic plane covering the Galactic longitude range 260 Degree-Sign transmission windows centered on 100, 150, and 220 GHz are presented. The maps sample an optical depth 1 {approx}line of sight in the Galactic plane. A generally increasing trend of polarization fraction with electromagnetic frequency is found, varying from 0.5%-1.5% at frequencies below 50 GHz to 2.5%-3.5% above 90 GHz. The effort to extend the capabilities of BICEP by installing 220 GHz band hardware is described along with analysis of the new band.

Bierman, E. M.; Keating, B. G.; Barron, D.; Kaufman, J. P. [University of California, San Diego (United States); Matsumura, T.; Dowell, C. D.; Bock, J. J.; Chiang, H. C.; Culverhouse, T. L.; Hristov, V. V.; Kovac, J. M.; Lange, A. E. [California Institute of Technology (United States); Ade, P. [University of Wales (United Kingdom); Barkats, D. [Joint ALMA Office-NRAO (Chile); Battle, J. O.; Leitch, E. M. [Jet Propulsion Laboratory (United States); Duband, L. [Commissariat a l'Energie Atomique (France); Hivon, E. F. [Institut d'Astrophysique de Paris (France); Holzapfel, W. L. [University of California, Berkeley (United States); Kuo, C. L., E-mail: ebierman@physics.ucsd.edu [Stanford University, CA (United States)

2011-11-10T23:59:59.000Z

177

Two particle correlation measurements with respect to higher harmonic event planes at PHENIX  

E-Print Network (OSTI)

Measurements of two particle azimuthal correlations in relativistic heavy ion collisions provide information of the possible interplay between hard-scattered partons and the hot-dense medium. Toward an understanding of parton-medium coupling, it is indispensable to obtain correlations where contributions from higher harmonic flow($v_n$) are rejected. It is also important to produce correlation measurements where the trigger particle is selected relative to second and third order event planes. This enables us to explore path-length dependence of parton energy loss and the influence of the medium on the jets. We present the latest PHENIX results of correlations in which contributions from higher harmonic flow have been subtracted, as well as second and third order event plane-dependent correlations in Au+Au collisions at $\\sqrt{s_{NN}}=200$ GeV.

Takahito Todoroki for the PHENIX Collaboration

2013-04-10T23:59:59.000Z

178

Lower bounds for the half-plane capacity of compact sets and symmetrization  

Science Conference Proceedings (OSTI)

Given a bounded relatively closed subset E of the upper half-plane H={l_brace}z:Imz>0{r_brace}, a new representation of the half-plane capacity of E is obtained in terms of the inner radius of the connected component of the set H/E which goes off to infinity. For this capacity, new lower bounds in terms of the capacities of sets obtained by application of a series of geometric transformations of the set E, including the Steiner and circular symmetrizations, are established, and its behaviour under linear and radial averaging transformations of families of compact sets {l_brace}E{sub k{r_brace}k=1}{sup n} is examined. Bibliography: 10 titles.

Dubinin, Vladimir N [Institute of Applied Mathematics, Far-Eastern Branch of the Russian Academy of Sciences, Vladivostok (Russian Federation)

2011-01-14T23:59:59.000Z

179

Field dependence of the superconducting basal plane anisotropy of TmNi2B2C  

SciTech Connect

The superconductor TmNi2B2C possesses a significant fourfold basal plane anisotropy, leading to a square vortex lattice (VL) at intermediate fields. However, unlike other members of the borocarbide superconductors, the anisotropy in TmNi2B2C appears to decrease with increasing field, evident by a reentrance of the square VL phase. We have used small-angle neutron scattering measurements of the VL to study the field dependence of the anisotropy. Our results provide a direct, quantitative measurement of the decreasing anisotropy. We attribute this reduction of the basal plane anisotropy to the strong Pauli paramagnetic effects observed in TmNi2B2C and the resulting expansion of vortex cores near Hc2.

Das, P.; Densmore, J.M.; Rastovski, C.; Schlesinger, K.J.; Laver, M.; Dewhurst, C.D.; Littrell, K.; Budko, Serguei L.; Canfield, Paul C.; Eskildsen, M.R.

2012-10-01T23:59:59.000Z

180

The C-metric as a colliding plane wave space-time  

E-Print Network (OSTI)

It is explicitly shown that part of the C-metric space-time inside the black hole horizon may be interpreted as the interaction region of two colliding plane waves with aligned linear polarization, provided the rotational coordinate is replaced by a linear one. This is a one-parameter generalization of the degenerate Ferrari-Ibanez solution in which the focussing singularity is a Cauchy horizon rather than a curvature singularity.

J. B. Griffiths; R. G. Halburd

2007-01-10T23:59:59.000Z

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181

In-Plane Focusing of Terahertz Surface Waves on a Gradient Index Metamaterial Film  

E-Print Network (OSTI)

We designed and implemented a gradient index metasurface for the in-plane focusing of confined terahertz surface waves. We measured the spatial propagation of the surface waves by two-dimensional mapping of the complex electric field using a terahertz near-field spectroscope. The surface waves were focused to a diameter of 500 \\micro m after a focal length of approx. 2 mm. In the focus, we measured a field amplitude enhancement of a factor of 3.

Volk, Martin F; Neu, Jens; Beigang, René; Rahm, Marco

2013-01-01T23:59:59.000Z

182

Strong directional out-of-plane scattering in multiple ionizing highly charged ion-atom collisions  

SciTech Connect

The azimuthal ([phi][sub r]) and polar angle ([theta][sub r]) scattering of projectiles in coincidence with recoil ions has been studied for 0.53 MeV/u F[sup 8+] + Ne. For high degree of ionization of the target we find the resultant transverse momentum of all electrons emitted into the continuum to increase with the number of ejected electrons and to have a direction mostly not co-planar with the scattering plane.

Gonzalez, A.; Hagmann, S.; Quinteros, T. (Kansas State Univ., Manhattan, KS (United States). J.R. MacDonald Lab.); Kraessig, B. (Freiburg Univ. (Germany). Fakultaet fuer Physik); Koch, R.; Schmidt-Boecking, H. (Frankfurt Univ. (Germany). Inst. fuer Kernphysik); Skutlartz, A. (East Carolina Univ., Greenville, NC (United States))

1990-01-01T23:59:59.000Z

183

Strong directional out-of-plane scattering in multiple ionizing highly charged ion-atom collisions  

SciTech Connect

The azimuthal ({phi}{sub r}) and polar angle ({theta}{sub r}) scattering of projectiles in coincidence with recoil ions has been studied for 0.53 MeV/u F{sup 8+} + Ne. For high degree of ionization of the target we find the resultant transverse momentum of all electrons emitted into the continuum to increase with the number of ejected electrons and to have a direction mostly not co-planar with the scattering plane.

Gonzalez, A.; Hagmann, S.; Quinteros, T. [Kansas State Univ., Manhattan, KS (United States). J.R. MacDonald Lab.; Kraessig, B. [Freiburg Univ. (Germany). Fakultaet fuer Physik; Koch, R.; Schmidt-Boecking, H. [Frankfurt Univ. (Germany). Inst. fuer Kernphysik; Skutlartz, A. [East Carolina Univ., Greenville, NC (United States)

1990-12-31T23:59:59.000Z

184

Critical Plane Analysis of Wall Assembly in a Hot, Humid Climate  

E-Print Network (OSTI)

Condensation plane analysis for determining critical planes at which condensation may occur can be performed for building assemblies in any climate. Procedures for doing so in heating climates where buildings dry to the outside of envelope assemblies are given in 1997 ASHRAE Fundamentals Handbook, Chapter 22 "Thermal and Moisture Control in Insulated Assemblies - Fundamentals." Little original work is available elsewhere in the literature to guide analysis for buildings in hot and humid climates. Example 1 in Chapter 22 of the Fundamentals Handbook gives step-by-step calculations, for a heating climate. To analyze envelope assemblies in hot and humid climates where drying predominately occurs to the indoors, no direct discussion or examples are available. This paper presents this detail for a typical light commercial wall assembly, and provides the basis for analysis of any envelope assembly in hot and humid climates. Analysis of an envelope assembly in hot and humid climates seeks to determine if there is a critical plane in the wall towards which water vapor flows more rapidly from the outdoors than it flows to the indoors. (In heating climates, the analysis is reversed). In order to do this, weather data must be examined to yield outdoor conditions, and indoor conditions must be identified. Water vapor and thermal resistance of the materials in the wall assembly must also be established. These data are then used to perform calculations using the basic diffusion equation and methods described in the Fundamentals Handbook.' Each potentially critical plane is analyzed to determine if water vapor can accumulate more rapidly than it dissipates. This potential accumulation would signify a heightened risk of equilibrium relative humidity sufficient to amplify microbial growth, or to promote the deterioration of building materials.

Turner, S. C.

2000-01-01T23:59:59.000Z

185

A NOTE ON THE DISTANCE SET PROBLEM IN THE PLANE THEMIS MITSIS  

E-Print Network (OSTI)

Abstract. We use a simple geometric-combinatorial argument to establish a quantitative relation between the generalized Hausdorff measure of a set and its distance set, extending a result originally due to Falconer. Let A be a subset of the plane. The distance set D(A) is defined as the set of all distances between points of A. Namely D(A) ={|x ? y | : x, y ? A}. It follows from the work of Falconer [2] (see also Mattila [3]) that 1

Communicated David Preiss

2001-01-01T23:59:59.000Z

186

The Sun's displacement from the galactic plane from spectroscopic parallaxes of 2400 OB stars  

E-Print Network (OSTI)

The Sun's vertical displacement from the galactic plane is determined model-independently from 3457 spectroscopic-parallax distance estimates for 2397 OB stars within 1200 pc of the Sun. The result, 19.5 +/- 2.2 pc, agrees well with other recent determinations. The distribution of stellar z-values with galactic longitude shows a slight sinusoidal dependence with an amplitude of about 26 pc.

B. Cameron Reed

2005-07-28T23:59:59.000Z

187

Scale Transformations on the Noncommutative Plane and the Seiberg-Witten Map  

E-Print Network (OSTI)

We write down three kinds of scale transformations {\\tt i-iii)} on the noncommutative plane. {\\tt i)} is the analogue of standard dilations on the plane, {\\tt ii)} is a re-scaling of the noncommutative parameter $\\theta$, and {\\tt iii)} is a combination of the previous two, whereby the defining relations for the noncommutative plane are preserved. The action of the three transformations is defined on gauge fields evaluated at fixed coordinates and $\\theta$. The transformations are obtained only up to terms which transform covariantly under gauge transformations. We give possible constraints on these terms. We show how the transformations {\\tt i)} and {\\tt ii)} depend on the choice of star product, and show the relation of {\\tt ii)} to Seiberg-Witten transformations. Because {\\tt iii)} preserves the fundamental commutation relations it is a symmetry of the algebra. One has the possibility of implementing it as a symmetry of the dynamics, as well, in noncommutative field theories where $\\theta$ is not fixed.

A. Pinzul; A. Stern

2004-06-08T23:59:59.000Z

188

On plane wave relativistic electrodynamics of plasmas and test particles in vacuum  

E-Print Network (OSTI)

We reconsider the exact microscopic equations (differential, and equivalent integral) ruling a relativistic cold plasma after the plane-wave Ansatz, without customary approximations. We show that in the Eulerian description the motion of a very diluted plasma initially at rest and excited by an arbitrary transverse plane electromagnetic travelling-wave has a disarmingly simple and explicit expression in terms of the transverse electromagnetic potential. As a by-product, we obtain also a simple and explicit expression for the general motion of a charged test particle under the action of an electromagnetic wave of the same kind. For a non-zero density plasma the above motion is a good approximation of the real one as long as the back-reaction of the charges on the electromagnetic field can be neglected, i.e. for a time lapse decreasing with the plasma density. As one of many possible applications, we use these results to describe how the ponderomotive force of a very intense and short plane laser pulse hitting normally the surface of a plasma boosts the surface electrons into the ion background. This penetration allows the "slingshot effect" [G. Fiore, R. Fedele, U. De Angelis, arXiv:1309.1400]: the electrons are then pulled back by the electric force exerted by the ions and may leave the plasma with high energy in the direction opposite to that of propagation of the pulse.

Gaetano Fiore

2013-12-17T23:59:59.000Z

189

Method and system of measuring ultrasonic signals in the plane of a moving web  

DOE Patents (OSTI)

An improved system for measuring the velocity of ultrasonic signals within the plane of moving web-like materials, such as paper, paperboard and the like is disclosed. In addition to velocity measurements of ultrasonic signals in the plane of the web in the machine direction, MD, and a cross direction, CD, generally perpendicular to the direction of the traveling web, therefore, one embodiment of the system in accordance with the present invention is also adapted to provide on-line indication of the polar specific stiffness of the moving web. In another embodiment of the invention, the velocity of ultrasonic signals in the plane of the web are measured by way of a plurality of ultrasonic transducers carried by synchronously driven wheels or cylinders, thus eliminating undue transducer wear due to any speed differences between the transducers and the web. In order to provide relatively constant contact force between the transducers and the webs, the transducers are mounted in a sensor housings which include a spring for biasing the transducer radially outwardly. The sensor housings are adapted to be easily and conveniently mounted to the carrier to provide a relatively constant contact force between the transducers and the moving web. 37 figs.

Hall, M.S.; Jackson, T.G.; Wink, W.A.; Knerr, C.

1996-02-27T23:59:59.000Z

190

Method and system of measuring ultrasonic signals in the plane of a moving web  

DOE Patents (OSTI)

An improved system for measuring the velocity of ultrasonic signals within the plane of moving web-like materials, such as paper, paperboard and the like. In addition to velocity measurements of ultrasonic signals in the plane of the web in the machine direction, MD, and a cross direction, CD, generally perpendicular to the direction of the traveling web, therefor, one embodiment of the system in accordance with the present invention is also adapted to provide on-line indication of the polar specific stiffness of the moving web. In another embodiment of the invention, the velocity of ultrasonic signals in the plane of the web are measured by way of a plurality of ultrasonic transducers carried by synchronously driven wheels or cylinders, thus eliminating undue transducer wear due to any speed differences between the transducers and the web. In order to provide relatively constant contact force between the transducers and the webs, the transducers are mounted in a sensor housings which include a spring for biasing the transducer radially outwardly. The sensor housings are adapted to be easily and conveniently mounted to the carrier to provide a relatively constant contact force between the transducers and the moving web.

Hall, Maclin S. (Marietta, GA); Jackson, Theodore G. (Atlanta, GA); Wink, Wilmer A. (Appleton, WI); Knerr, Christopher (Lawrenceville, GA)

1996-01-01T23:59:59.000Z

191

A Search for Narrow Vertical Structures in the Canadian Galactic Plane Survey  

E-Print Network (OSTI)

Worms are defined to be dusty, atomic hydrogen (HI) structures which are observed in low resolution data to rise perpendicular to the Galactic plane. Data from the 1'-resolution Canadian Galactic Plane Survey (CGPS) were systematically searched for narrow vertical HI structures which could be resolved worms. Another motivation for the search was to explore the scenario that mushroom-shaped worms like GW123.4-1.5, studied by English and collaborators, could be generated by a single supernova. However no other vertical structures of mushroom-shape morphology were found. We also examined objects previously classified as worm candidates by Koo and collaborators; only 7 have a significant portion of their structure falling in the CGPS range of l=74 deg to 147 deg, -3.5 deg ~ 500 pc tall, thus extending from the Galactic plane into the halo. We provide details about these narrow vertical structures, including comparisons between HI, radio continuum, IR, and CO observations. Our search was conducted by visual inspection and we describe the limitations of this approach since it indicates that only 6 disk-halo features may exist throughout the Milky Way. We also discuss possible origins of structures at high latitudes and the relationship between mushroom-shaped clouds and old supernova remnants.

Ashish Asgekar; Jayanne English; Samar Safi-Harb; Roland Kothes

2004-11-26T23:59:59.000Z

192

Magnetoresistance Technique for Determining Cross-Plane Mobility in Superlattice Devices  

DOE Green Energy (OSTI)

The cross-plane mobility, in the direction perpendicular to the planes of a superlattice, is critical for the computation of the figure of merit (ZT) in a thermoelectric device. The measurement of cross-plane mobilities in thermoelectric superlattice structures cannot be performed by conventional techniques such as the van der Pauw method. Therefore, alternative techniques must be used to obtain this important parameter. Magnetoresistance is the increase in material resistivity due to a lengthened path for charge carriers in a perpendicular magnetic field. The magnetoresistance is related to the magnetic field strength as ({mu}B)2 in the standard configuration, but the field dependence is also influenced by device geometry. This work focuses on measuring superlattice samples of composition Bi2Te3/Sb2Te3 that are removed from their growth substrate and mounted on metal-coated substrates. This resulting mesa structure has a 100-mm-square contact metallization. Technical issues related to the sample preparation for the measurement are discussed. The magnetoresistance effect is expected to be small due to the anticipated low mobilities in Bi2Te3-based materials. Magnetoresistance studies with such superlattice thermo-elements were attempted using a dc magnetic field, but the sensitivity was insufficient. An ac magnetoresistance with lock-in detection can yield improved sensitivity.

Johnston, S. W.; Ahrenkiel, R. K.; Young, D. [National Renewable Energy Laboratory, Golden, CO (US); Venkatasubramanian, R. [Research Triangle Institute, NC (US)

1999-09-01T23:59:59.000Z

193

Accurate measurement of the through-plane water content of proton-exchange  

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

Accurate measurement of the through-plane water content of proton-exchange Accurate measurement of the through-plane water content of proton-exchange membranes using neutron radiography Title Accurate measurement of the through-plane water content of proton-exchange membranes using neutron radiography Publication Type Journal Article Year of Publication 2012 Authors Hussey, Daniel S., Dusan Spernjak, Adam Z. Weber, Rangachary Mukundan, Joseph Fairweather, Eric L. Brosha, John Davey, Jacob S. Spendelow, David L. Jacobson, and Rodney L. Borup Journal Journal of Applied Physics Volume 112 Issue 10 Pagination 104906 Date Published 2012 ISSN 00218979 Keywords electrolyte fuel-cells, in-situ, liquid water, microchannel plate detectors, model, nafion, polymer electrolytes, schroeders-paradox, transport, x-ray-scattering Abstract The water sorption of proton-exchange membranes (PEMs) was measured in situ using high-resolution neutron imaging in small-scale fuel cell test sections. A detailed characterization of the measurement uncertainties and corrections associated with the technique is presented. An image-processing procedure resolved a previously reported discrepancy between the measured and predicted membrane water content. With high-resolution neutron-imaging detectors, the water distributions across N1140 and N117 Nafion membranes are resolved in vapor-sorption experiments and during fuel cell and hydrogen-pump operation. The measured in situ water content of a restricted membrane at 80 degrees C is shown to agree with ex situ gravimetric measurements of free-swelling membranes over a water activity range of 0.5 to 1.0 including at liquid equilibration. Schroeder's paradox was verified by in situ water-content measurements which go from a high value at supersaturated or liquid conditions to a lower one with fully saturated vapor. At open circuit and during fuel cell operation, the measured water content indicates that the membrane is operating between the vapor-and liquid-equilibrated states.

194

Quasipassive positioning platform for nanoscale management of in-plane motion  

Science Conference Proceedings (OSTI)

As leading edge technology pursues a common trend of working on smaller and smaller scales, there is increasing demand on the motion management at the nanometer range. In this letter, we report a two-axis quasipassive positioning device capable of four degrees of freedom in-plane motion. The concept comprises of a platform suspended by tensile stressed flexure elements on either side. By selectively trimming the stress elements, the equilibrium position can be biased to one side or another, enabling nanoscale movement between the suspended platform and the base. Focused ion beam experiment demonstrates that such platform enables positioning accuracy on the order of tens of nanometers.

Li Biao; Zhu Yu; Sharon, Andre [Fraunhofer Center for Manufacturing Innovation, 15 St. Mary's Street, Brookline, Massachusetts 02446 (United States); College of Nanoscale Science and Engineering, University at Albany-SUNY, 255 Fuller Road, Albany, New York 12203 (United States); Fraunhofer Center for Manufacturing Innovation, 15 St. Mary's Street, Brookline, Massachusetts 02446 (United States)

2006-07-24T23:59:59.000Z

195

Spin-projection orientations in the plane square-lattice Ising model with periodic boundary conditions  

E-Print Network (OSTI)

The periodic boundary conditions changed the plane square-lattice Ising model to the torus-lattice system which restricts the spin-projection orientations. Only two of the three important spin-projection orientations, parallel to the x-axis or to the y-axis, are suited to the torus-lattice system. The infinitesimal difference of the free-energies of the systems between the two systems mentioned above makes their critical temperatures infinitely close to each other, but their topological fundamental groups are distinct.

You-gang Feng

2005-06-24T23:59:59.000Z

196

Energy of gravitational radiation in plane-symmetric space-times  

E-Print Network (OSTI)

Gravitational radiation in plane-symmetric space-times can be encoded in a complex potential, satisfying a non-linear wave equation. An effective energy tensor for the radiation is given, taking a scalar-field form in terms of the potential, entering the field equations in the same way as the matter energy tensor. It reduces to the Isaacson energy tensor in the linearized, high-frequency approximation. An energy conservation equation is derived for a quasi-local energy, essentially the Hawking energy. A transverse pressure exerted by interacting low-frequency gravitational radiation is predicted.

Sean A. Hayward

2008-05-19T23:59:59.000Z

197

Elucidating through-plane liquid water profile in a polymer electrolyte membrane fuel cell.  

DOE Green Energy (OSTI)

In this paper, a numerical model incorporating micro-porous layers (MPLs) is presented for simulating water transport within the gas diffusion layers (GDLs) and MPLs as well as across their interfaces in a polymer electrolyte membrane (PEM) fuel cell. One-dimensional analysis is conducted to investigate the impacts of MPL and GDL properties on the liquid-water profile across the anode GDL-MPL and cathode MPL-GDL regions. Furthermore, two-dimensional numerical simulations that take MPLs into account are also carried out to elucidate liquid water transport, particularly through-plane liquid-water profile in a PEM fuel cell. Results from case studies are presented.

Wang, Yun (University of California, Irvine, CA); Chen, Ken Shuang

2010-10-01T23:59:59.000Z

198

Vortices and Rossby-wave radiation on the beta-plane  

E-Print Network (OSTI)

on the beta-plane, to use a more fluid-dynamical language. This equation is @ @t (r 2 #0; R#0;2 ) + J( ,r2 ) + #12;@ @x = 0, (1.1) where the x and y axes are eastward and northward respectively, is the two- dimensional streamfunction, R the Rossby radius... of deformation, #12; the planetary 7 1#1;Introduction vorticity gradient and J the Jacobian. The Rossby radius of deformation, R = (gD) 1 2 f , (1.2) is a measure of the relative importance of vortex stretching and planetary vorticity. In this expression, L is a...

Llewellyn Smith, Stefan

1996-11-19T23:59:59.000Z

199

Three-Dimensional Integration Technology for Advanced Focal Planes and Integrated Circuits  

Science Conference Proceedings (OSTI)

Over the last five years MIT Lincoln Laboratory (MIT-LL) has developed a three-dimensional (3D) circuit integration technology that exploits the advantages of silicon-on-insulator (SOI) technology to enable wafer-level stacking and micrometer-scale electrical interconnection of fully fabricated circuit wafers. Advanced focal plane arrays have been the first applications to exploit the benefits of this 3D integration technology because the massively parallel information flow present in 2D imaging arrays maps very nicely into a 3D computational structure as information flows from circuit-tier to circuit-tier in the z-direction. To date, the MIT-LL 3D integration technology has been used to fabricate four different focal planes including: a 2-tier 64 x 64 imager with fully parallel per-pixel A/D conversion; a 3-tier 640 x 480 imager consisting of an imaging tier, an A/D conversion tier, and a digital signal processing tier; a 2-tier 1024 x 1024 pixel, 4-side-abutable imaging modules for tiling large mosaic focal planes, and a 3-tier Geiger-mode avalanche photodiode (APD) 3-D LIDAR array, using a 30 volt APD tier, a 3.3 volt CMOS tier, and a 1.5 volt CMOS tier. Recently, the 3D integration technology has been made available to the circuit design research community through DARPA-sponsored Multiproject fabrication runs. The first Multiproject Run (3DL1) completed fabrication in early 2006 and included over 30 different circuit designs from 21 different research groups. 3D circuit concepts explored in this run included stacked memories, field programmable gate arrays (FPGAs), and mixed-signal circuits. The second Multiproject Run (3DM2) is currently in fabrication and includes particle detector readouts designed by Fermilab. This talk will provide a brief overview of MIT-LL's 3D-integration process, discuss some of the focal plane applications where the technology is being applied, and provide a summary of some of the Multiproject Run circuit results.

Keast, Craig (M.I.T. Lincoln Laboratory)

2007-02-28T23:59:59.000Z

200

RESPONSE ROBOTS RESPONSE ROBOTS  

Science Conference Proceedings (OSTI)

... 44 44 • Terrains: Gravel (P) • Terrains: Mud (P) • Obstacles: Inclined Planes (V) • Obstacles: Gap Crossings: Static, Dynamic (V) • Obstacles: Pipe ...

2012-06-06T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Cross-plane lattice and electronic thermal conductivities of ErAs : InGaAs/InGaAlAs superlattices  

E-Print Network (OSTI)

should be noted that the lattice thermal conductivity should88, 242107 ?2006? Cross-plane lattice and electronic thermalWe studied the cross-plane lattice and electronic thermal

2006-01-01T23:59:59.000Z

202

Indentation-induced mechanical deformation behaviors of AlN thin films deposited on c-plane sapphire  

Science Conference Proceedings (OSTI)

The mechanical properties and deformation behaviors of AlN thin films deposited on c-plane sapphire substrates by helicon sputtering method were determined using the Berkovich nanoindentation and cross-sectional transmission electron microscopy (XTEM). ...

Sheng-Rui Jian; Jenh-Yih Juang

2012-01-01T23:59:59.000Z

203

A New Scheme for Effective Roughness Length and Effective Zero-Plane Displacement in Land Surface Models  

Science Conference Proceedings (OSTI)

Based on the similarity theory of the atmospheric surface layer and the flux conservation and mass conservation laws, a new scheme for determining the effective roughness length (ERL) and the effective zero-plane displacement (EZPD) for a ...

Zhong Zhong; Wei Lu; Shuai Song; Yaocun Zhang

2011-12-01T23:59:59.000Z

204

On the Spectral Convergence of the Supercompact Finite-Difference Schemes for the f-Plane Shallow-Water Equations  

Science Conference Proceedings (OSTI)

For the f-plane shallow-water equations, the convergence properties of the supercompact finite-difference method (SCFDM) are examined during the evolution of complex, nonlinear flows spawned by an unstable jet. The second-, fourth-, sixth-, and ...

S. Ghader; A. R. Mohebalhojeh; V. Esfahanian

2009-07-01T23:59:59.000Z

205

Vertical Structure of Convective Heating and the Three-Dimensional Structure of the Forced Circulation on an Equatorial Beta Plane  

Science Conference Proceedings (OSTI)

In this paper, the three-dimensional structure of the thermally forced atmosphere on an equatorial ? plane is investigated. Special emphasis is placed on the relations between the vertical structure of heating and the horizontal structure of the ...

Zhaohua Wu; E. S. Sarachik; David S. Battisti

2000-07-01T23:59:59.000Z

206

Effects of Mean Flow Direction on Energy, Isotropy, and Coherence of Baroclinically Unstable Beta-Plane Geostrophic Turbulence  

Science Conference Proceedings (OSTI)

The effects of mean flow direction on statistically steady, baroclinically unstable, beta-plane quasigeostrophic (QG) turbulence are examined in a two-layer numerical model. The turbulence is forced by an imposed, horizontally homogeneous, ...

Brian K. Arbic; Glenn R. Flierl

2004-01-01T23:59:59.000Z

207

Variational Pseudo-Multiple-Doppler Wind Retrieval in the Vertical Plane for Ground-Based Mobile Radar Data  

Science Conference Proceedings (OSTI)

A variational procedure is developed that utilizes mobile ground-based range–height indicator (RHI) Doppler radar velocity data for the synthesis of two-dimensional, RHI plane wind vectors. The radial component winds are obtained with the radar ...

Christopher C. Weiss; Howard B. Bluestein; Robert Conzemius; Evgeni Fedorovich

2007-07-01T23:59:59.000Z

208

Formation of Jets through Mixing and Forcing of Potential Vorticity: Analysis and Parameterization of Beta-Plane Turbulence  

Science Conference Proceedings (OSTI)

Formation of multiple jets in forced beta-plane turbulence is studied from the perspective of nonuniform nonconservative arrangement of potential vorticity (PV). Numerical simulations are analyzed to show that mixing and forcing reinforce jets by ...

Noboru Nakamura; Da Zhu

2010-09-01T23:59:59.000Z

209

The Moisture Mode in the Quasi-Equilibrium Tropical Circulation Model. Part II: Nonlinear Behavior on an Equatorial ? Plane  

Science Conference Proceedings (OSTI)

Numerical calculations of a simplified quasi-equilibrium tropical circulation model (QTCM) on the equatorial ? plane have been performed to explore the nonlinear regime of the moisture mode. Sensitivity tests have examined the effects of ...

Masahiro Sugiyama

2009-06-01T23:59:59.000Z

210

Dihadron Correlations Relative to the Event Plane in 200 GeV Au+Au Collisions from STAR  

E-Print Network (OSTI)

Dihadron correlations with a high-pt trigger particle are analyzed by STAR relative to the event plane in Au+Au collisions at 200 GeV (arXiv:1010.0690v1). The elliptic and quadrangular flow anisotropies are subtracted. The remaining dihadron correlation signals are found to be composed of a near-side peak, which is separated into jet-like and "ridge"-like components, and an away-side correlation structure. The ridge-like structure is found to decrease with the trigger particle azimuthal angle relative to the event plane from in-plane to out-of-plane. The away-side structure is found to evolve from single-peak for in-plane triggers to double-peak for out-of-plane triggers. Is the dihadron correlation signal just a manifestation of the triangular and higher-order harmonic flows? This talk addresses this question, exploring the answers using limiting-case assumptions, and discusses the implications of the data regarding the ridge and the double-peak structure.

Fuqiang Wang

2013-09-18T23:59:59.000Z

211

Zero-flux planes, flux reversals and diffusion paths in ternary and quaternary diffusion  

SciTech Connect

During isothermal multicomponent diffusion, interdiffusion fluxes of individual components can go to zero at zero-flux planes (ZFP) and exhibit flux reversals from one side to the other of such planes. Interdiffusion fluxes as well as the locations and compositions of ZFPs for components are determined directly from the concentration profiles of diffusion couples without the need for prior knowledge of interdiffusion coefficients. The development and identification of ZFPs is reviewed with the aid of single phase and two-phase diffusion couples investigated in the Cu-Ni-Zn system at 775/sup 0/C. ZFP locations in the diffusion zone nearly correspond to sections where the activity of a component is the same as its activity in either of the terminal alloys of a couple. Path slopes at ZFPs are uniquely dictated by the atomic mobility and thermodynamic data for the components. Discontinuous flux reversals for the components can also occur at interfaces in multiphase couples. Identification of ZFPs is also presented for diffusion in the Cu-Ni-Zn-Mn quaternary system. Analytical representation of diffusion paths for both ternary and quaternary diffusion couples is presented with the aid of characteristic path parameters.

Dayananda, M.A.

1986-05-23T23:59:59.000Z

212

THE BOLOCAM GALACTIC PLANE SURVEY. II. CATALOG OF THE IMAGE DATA  

Science Conference Proceedings (OSTI)

We present a catalog of 8358 sources extracted from images produced by the Bolocam Galactic Plane Survey (BGPS). The BGPS is a survey of the millimeter dust continuum emission from the northern Galactic plane. The catalog sources are extracted using a custom algorithm, Bolocat, which was designed specifically to identify and characterize objects in the large-area maps generated from the Bolocam instrument. The catalog products are designed to facilitate follow-up observations of these relatively unstudied objects. The catalog is 98% complete from 0.4 Jy to 60 Jy over all object sizes for which the survey is sensitive (<3.'5). We find that the sources extracted can best be described as molecular clumps-large dense regions in molecular clouds linked to cluster formation. We find that the flux density distribution of sources follows a power law with dN/dS {proportional_to} S {sup -2.4{+-}0.1} and that the mean Galactic latitude for sources is significantly below the midplane: (b) = (-0.{sup 0}095 {+-} 0.{sup 0}001).

Rosolowsky, Erik [Department of Physics and Astronomy, University of British Columbia Okanagan, 3333 University Way, Kelowna BC, V1V 1V7 (Canada); Dunham, Miranda K.; Evans, Neal J.; Harvey, Paul [Department of Astronomy, University of Texas, 1 University Station C1400, Austin, TX 78712 (United States); Ginsburg, Adam; Bally, John; Battersby, Cara; Glenn, Jason; Stringfellow, Guy S. [CASA, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Bradley, E. Todd [Department of Physics, University of Central Florida, Orlando, FL 32816 (United States); Aguirre, James [Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104 (United States); Cyganowski, Claudia [Department of Astronomy, University of Wisconsin, Madison, WI 53706 (United States); Dowell, Darren [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91104 (United States); Drosback, Meredith [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Walawender, Josh [Institute for Astronomy, 640 N. Aohoku Pl., Hilo, HI 96720 (United States); Williams, Jonathan P., E-mail: erik.rosolowsky@ubc.c [Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)

2010-05-15T23:59:59.000Z

213

Verification of theoretically computed spectra for a point rotating in a vertical plane  

DOE Green Energy (OSTI)

A theoretical model is modified and tested that produces the power spectrum of the alongwind component of turbulence as experienced by a point rotating in a vertical plane perpendicular to the mean wind direction. The ability to generate such a power spectrum, independent of measurement, is important in wind turbine design and testing. The radius of the circle of rotation, its height above the ground, and the rate of rotation are typical for those for a MOD-OA wind turbine. Verification of this model is attempted by comparing two sets of variances that correspond to individual harmonic bands of spectra of turbulence in the rotational frame. One set of variances is calculated by integrating the theoretically generated rotational spectra; the other is calculated by integrating rotational spectra from real data analysis. The theoretical spectrum is generated by Fourier transformation of an autocorrelation function taken from von Karman and modified for the rotational frame. The autocorrelation is based on dimensionless parameters, each of which incorporates both atmospheric and wind turbine parameters. The real data time series are formed by sampling around the circle of anemometers of the Vertical Plane Array at the former MOD-OA site at Clayton, New Mexico.

Powell, D.C.; Connell, J.R.; George, R.L.

1985-03-01T23:59:59.000Z

214

Discovery of a GeV Blazar Shining Through the Galactic Plane  

Science Conference Proceedings (OSTI)

The Fermi Large Area Telescope (LAT) discovered a new gamma-ray source near the Galactic plane, Fermi J0109+6134, when it flared brightly in 2010 February. The low Galactic latitude (b = -1.2{sup o}) indicated that the source could be located within the Galaxy, which motivated rapid multi-wavelength follow-up including radio, optical, and X-ray observations. We report the results of analyzing all 19 months of LAT data for the source, and of X-ray observations with both Swift and the Chandra X-ray Observatory. We determined the source redshift, z = 0.783, using a Keck LRIS observation. Finally, we compiled a broadband spectral energy distribution (SED) from both historical and new observations contemporaneous with the 2010 February flare. The redshift, SED, optical line width, X-ray obsorption, and multi-band variability indicate that this new Gev source is a blazar seen through the Galactic plane. Because several of the optical emission lines have equivalent width > 5 {angstrom}, this blazar belongs in the flat-spectrum radio quasar category.

Vandenbroucke, J.; Buehler, R.; Ajello, M.; Bechtol, K.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Bellini, A.; /Padua U., Astron. Dept. /Baltimore, Space Telescope Sci.; Bolte, M.; /UC, Santa Cruz; Cheung, C.C.; /Naval Research Lab, Wash., D.C. /NAS, Washington, D.C.; Civano, F.; /Smithsonian Astrophys. Observ.; Donato, D.; /NASA, Goddard; Fuhrmann, L.; /Bonn, Max Planck Inst., Radioastron.; Funk, S.; Healey, S.E.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Hill, A.B.; /Joseph Fourier U.; Knigge, C.; /Southampton U.; Madejski, G.M.; Romani, R.W.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Santander-Garcia, M.; /IAC, La Laguna /Isaac Newton Group /Laguna U., Tenerife; Shaw, M.S.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Steeghs, D.; /Warwick U.; Torres, M.A.P.; /Smithsonian Astrophys. Observ.; Van Etten, A.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Texas U., Astron. Dept.

2011-08-11T23:59:59.000Z

215

Parallel Implementation of Gamma-Point Pseudopotential Plane-Wave DFT with Exact Exchange  

Science Conference Proceedings (OSTI)

One of the more persistent failures of conventional density functional theory (DFT) methods has been their failure to yield localized charge states such as polarons, excitons and solitons in solid-state and extended systems. It has been suggested that conventional DFT functionals, which are not self-interaction free, tend to favor delocalized electronic states since self-interaction creates a Coulomb barrier to charge localization. Pragmatic approaches in which the exchange correlation functionals are augmented with small amount of exact exchange (hybrid-DFT, e.g. B3LYP and PBE0) have shown promise in localizing charge states and predicting accurate band gaps and reaction barriers. We have developed a parallel algorithm for implementing exact exchange into pseudopotential plane-wave density functional theory and we have implemented it in the NWChem program package. The technique developed can readily be employed in plane-wave DFT programs. Furthermore, atomic forces and stresses are straightforward to implement, making it applicable to both confined and extended systems, as well as to Car-Parrinello ab initio molecular dynamic simulations. This method has been applied to several systems for which conventional DFT methods do not work well, including calculations for band gaps in oxides and the electronic structure of a charge trapped state in the Fe(II) containing mica, annite.

Bylaska, Eric J.; Tsemekhman, Kiril L.; Baden, Scott B.; Weare, John H.; Jonsson, Hannes

2011-01-15T23:59:59.000Z

216

The characteristic initial value problem for colliding plane waves: The linear case  

E-Print Network (OSTI)

The physical situation of the collision and subsequent interaction of plane gravitational waves in a Minkowski background gives rise to a well-posed characteristic initial value problem in which initial data are specified on the two null characteristics that define the wavefronts. In this paper, we analyse how the Abel transform method can be used in practice to solve this problem for the linear case in which the polarization of the two gravitational waves is constant and aligned. We show how the method works for some known solutions, where problems arise in other cases, and how the problem can always be solved in terms of an infinite series if the spectral functions for the initial data can be evaluated explicitly.

J. B. Griffiths; M. Santano-Roco

2002-06-25T23:59:59.000Z

217

Electric Chern-Simons term, enlarged exotic Galilei symmetry and noncommutative plane  

SciTech Connect

The extended exotic planar model for a charged particle is constructed. It includes a Chern-Simons-like term for a dynamical electric field, but produces usual equations of motion for the particle in background constant uniform electric and magnetic fields. The electric Chern-Simons term is responsible for the noncommutativity of the boost generators in the 10-dimensional enlarged exotic Galilei symmetry algebra of the extended system. The model admits two reduction schemes by the integrals of motion, one of which reproduces the usual formulation for the charged particle in external constant electric and magnetic fields with associated field-deformed Galilei symmetry, whose commuting boost generators are identified with the nonlocal in time Noether charges reduced on-shell. Another reduction scheme, in which electric field transmutes into the commuting space translation generators, extracts from the model a free particle on the noncommutative plane described by the twofold centrally extended Galilei group of the nonrelativistic anyons.

Olmo, Mariano A. del [Departamento de Fisica, Universidad de Valladolid E-47011, Valladolid (Spain)]. E-mail: olmo@fta.uva.es; Plyushchay, Mikhail S. [Departamento de Fisica, Universidad de Santiago de Chile, Casilla 307, Santiago 2 (Chile)]. E-mail: mplyushc@lauca.usach.cl

2006-12-15T23:59:59.000Z

218

Normal matrix models, dbar-problem, and orthogonal polynomials on the complex plane  

E-Print Network (OSTI)

We introduce a dbar-formulation of the orthogonal polynomials on the complex plane, and hence of the related normal matrix model, which is expected to play the same role as the Riemann-Hilbert formalism in the theory of orthogonal polynomials on the line and for the related Hermitian model. We propose an analog of Deift-Kriecherbauer-McLaughlin-Venakides-Zhou asymptotic method for the analysis of the relevant dbar-problem, and indicate how familiar steps for the Hermitian model, e.g. the g-function ``undressing'', might look like in the case of the normal model. We use the particular model considered recently by P. Elbau and G. Felder as a case study.

Alexander R. Its; Leon A. Takhtajan

2007-08-28T23:59:59.000Z

219

Fission barriers in neutron-proton isospin plane for heavy neutron-rich nuclei  

E-Print Network (OSTI)

We discuss the sensitivity of fission barrier for heavy neutron-rich nuclei to fission paths in the two dimensional neutron-proton quadrupole plane. To this end, we use the constrained Skyrme-Hartree-Fock + BCS method, and examine the difference of fission barriers obtained with three constraining operators, that is, the neutron, proton, and mass quadrupole operators. We investigate $^{220}$U, $^{236}$U, and $^{266}$U, %from proton-rich to neutron-rich uranium isotopes, that is relevant to r-process nucleosynthesis. We find that the fission barrier heights are almost the same among the three constraining operators even for neutron-rich nuclei, indicating that the usual way to calculate fission barriers with the mass quadrupole operator is well justified. We also discuss the difference between proton and neutron deformation parameters along the fission paths.

F. Minato; K. Hagino

2008-02-19T23:59:59.000Z

220

Line-plane broadcasting in a data communications network of a parallel computer  

DOE Patents (OSTI)

Methods, apparatus, and products are disclosed for line-plane broadcasting in a data communications network of a parallel computer, the parallel computer comprising a plurality of compute nodes connected together through the network, the network optimized for point to point data communications and characterized by at least a first dimension, a second dimension, and a third dimension, that include: initiating, by a broadcasting compute node, a broadcast operation, including sending a message to all of the compute nodes along an axis of the first dimension for the network; sending, by each compute node along the axis of the first dimension, the message to all of the compute nodes along an axis of the second dimension for the network; and sending, by each compute node along the axis of the second dimension, the message to all of the compute nodes along an axis of the third dimension for the network.

Archer, Charles J. (Rochester, MN); Berg, Jeremy E. (Rochester, MN); Blocksome, Michael A. (Rochester, MN); Smith, Brian E. (Rochester, MN)

2010-11-23T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Deep traps in nonpolar m-plane GaN grown by ammonia-based molecular beam epitaxy  

Science Conference Proceedings (OSTI)

Deep level defects in nonpolar m-plane GaN grown by ammonia-based molecular beam epitaxy were characterized using deep level transient spectroscopy (DLTS) and deep level optical spectroscopy (DLOS) and compared with polar c-plane GaN that was grown simultaneously in the same growth run. Significant differences in both the levels present and their concentrations were observed upon comparison of both growth orientations. DLTS revealed electron traps with activation energies of 0.14 eV, 0.20 eV, and 0.66 eV in the m-plane material, with concentrations that were {approx}10-50 x higher than traps of similar activation energies in the c-plane material. Likewise, DLOS measurements showed {approx}20 x higher concentrations of both a C{sub N} acceptor-like state at E{sub C} - 3.26 eV, which correlates with a high background carbon concentration observed by secondary ion mass spectroscopy for the m-plane material [A. Armstrong, A. R. Arehart, B. Moran, S. P. DenBaars, U. K. Mishra, J. S. Speck, and S. A. Ringel, Appl. Phys. Lett. 84, 374 (2004)], and the V{sub Ga}-related state level at E{sub C} - 2.49 eV, which is consistent with an enhanced yellow luminescence observed by photoluminescence. The findings suggest a strong impact of growth dynamics on the incorporation of impurities and electrically active native point defects as a function of GaN growth plane polarity.

Zhang, Z.; Arehart, A. R. [Department of Electrical and Computer Engineering, Ohio State University, Columbus, Ohio 43210 (United States); Hurni, C. A.; Speck, J. S. [Department of Materials, University of California, Santa Barbara, California 93106-5050 (United States); Yang, J. [Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210 (United States); Myers, R. C.; Ringel, S. A. [Department of Electrical and Computer Engineering, Ohio State University, Columbus, Ohio 43210 (United States); Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210 (United States)

2012-01-30T23:59:59.000Z

222

The quantum harmonic oscillator on the sphere and the hyperbolic plane: {kappa}-dependent formalism, polar coordinates, and hypergeometric functions  

Science Conference Proceedings (OSTI)

A nonlinear model representing the quantum harmonic oscillator on the sphere and the hyperbolic plane is solved in polar coordinates (r,{phi}) by making use of a curvature-dependent formalism. The curvature {kappa} is considered as a parameter and then the radial Schroedinger equation becomes a {kappa}-dependent Gauss hypergeometric equation. The energy spectrum and the wave functions are exactly obtained in both the sphere S{sup 2} ({kappa}>0) and the hyperbolic plane H{sup 2} ({kappa}<0). A comparative study between the spherical and the hyperbolic quantum results is presented.

Carinena, Jose F.; Ranada, Manuel F.; Santander, Mariano [Departmento de Fisica Teorica, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza (Spain); Departamento de Fisica Teorica, Facultad de Ciencias, Universidad de Valladolid, 47011 Valladolid (Spain)

2007-10-15T23:59:59.000Z

223

EVALUATING THE HYDROGEOCHEMICAL RESPONSE OF SPRINGS USING PHASE-PLANE PLOTS AND SINGULAR SPECTRUM ANALYSIS  

DOE Green Energy (OSTI)

An ongoing study is focused on understanding the hydrology and geochemistry of three contaminated, perennial, semi-arid zone springs at a high explosives production facility at Los Alamos National Laboratory, in northern New Mexico, USA. Springflow time series were examined using singular spectrum analysis (SSA) to identify the important time-scales affecting flow in the springs. SSA results suggest that springflow has two dominant patterns: a series of low-frequency modes which follow the seasonal and longer-term climate conditions at the site, and a large number of higher frequency modes which display the characteristic ''red noise'' spectrum related to local, short-term weather conditions. Phase-plane plots of {delta}{sup 18}O and spring discharge suggest that high flow conditions are dominated by snowmelt and summer monsoon inputs while low flow conditions can be affected by mixing of fast and slow flow components causing wide variations in {delta}{sup 18}O values. The analysis is being used for development of an efficient strategy for sampling design for environmental monitoring of contaminants that respond to multiple time scales.

B. NEWMAN; C. DUFFY; D. HICKMOTT

2001-04-01T23:59:59.000Z

224

The quantum harmonic oscillator on the sphere and the hyperbolic plane  

SciTech Connect

A nonlinear model of the quantum harmonic oscillator on two-dimensional space of constant curvature is exactly solved. This model depends on a parameter {lambda} that is related with the curvature of the space. First, the relation with other approaches is discussed and then the classical system is quantized by analyzing the symmetries of the metric (Killing vectors), obtaining a {lambda}-dependent invariant measure d{mu}{sub {lambda}} and expressing the Hamiltonian as a function of the Noether momenta. In the second part, the quantum superintegrability of the Hamiltonian and the multiple separability of the Schroedinger equation is studied. Two {lambda}-dependent Sturm-Liouville problems, related with two different {lambda}-deformations of the Hermite equation, are obtained. This leads to the study of two {lambda}-dependent families of orthogonal polynomials both related with the Hermite polynomials. Finally the wave functions {psi}{sub m,n} and the energies E{sub m,n} of the bound states are exactly obtained in both the sphere S{sup 2} and the hyperbolic plane H{sup 2}.

Carinena, Jose F. [Departamento de Fisica Teorica, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza (Spain)], E-mail: jfc@unizar.es; Ranada, Manuel F. [Departamento de Fisica Teorica, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza (Spain)], E-mail: mfran@unizar.es; Santander, Mariano [Departamento de Fisica Teorica, Facultad de Ciencias, Universidad de Valladolid, 47011 Valladolid (Spain)], E-mail: msn@fta.uva.es

2007-10-15T23:59:59.000Z

225

Electric Chern-Simons term, enlarged exotic Galilei symmetry and noncommutative plane  

E-Print Network (OSTI)

The extended exotic planar model for a charged particle is constructed. It includes a Chern-Simons-like term for a dynamical electric field, but produces usual equations of motion for the particle in background constant uniform electric and magnetic fields. The electric Chern-Simons term is responsible for the non-commutativity of the boost generators in the ten-dimensional enlarged exotic Galilei symmetry algebra of the extended system. The model admits two reduction schemes by the integrals of motion, one of which reproduces the usual formulation for the charged particle in external constant electric and magnetic fields with associated field-deformed Galilei symmetry, whose commuting boost generators are identified with the nonlocal in time Noether charges reduced on-shell. Another reduction scheme, in which electric field transmutes into the commuting space translation generators, extracts from the model a free particle on the noncommutative plane described by the two-fold centrally extended Galilei group of the non-relativistic anyons.

Mariano A. del Olmo; Mikhail S. Plyushchay

2005-08-03T23:59:59.000Z

226

Seismic Response Of Masonry Plane Walls: A Numerical Study On Spandrel Strength  

Science Conference Proceedings (OSTI)

The paper reports the results of a numerical investigation on masonry walls subjected to in-plane seismic loads. This research aims to verify the formulae of shear and flexural strength of masonry spandrels which are given in the recent Italian Standards. Seismic pushover analyses have been carried out using finite element models of unreinforced walls and strengthened walls introducing reinforced concrete (RC) beams at the floor levels. Two typologies of walls have been considered distinguished for the height to length ratio h/l of the spandrels: a) short beams (h/l = 1.33) and b) slender beams (h/l = 0.5). Results obtained for the unreinforced and the strengthened walls are compared with equations for shear and flexural strength provided in Standards [1]. The numerical analyses show that the reliability of these equations is at least questionable especially for the prediction of the flexural strength. In the cases in which the axial force has not been determined by the structural analysis, Standards seems to overestimate the flexural strength of short spandrels both for the unreinforced and the strengthened wall.

Betti, Michele; Galano, Luciano; Vignoli, Andrea [Department of Civil and Environmental Engineering (DICeA) University of Florence, Via di S. Marta 3, I-50139, Florence (Italy)

2008-07-08T23:59:59.000Z

227

Unidentified gamma-ray sources off the Galactic plane as low-mass microquasars?  

E-Print Network (OSTI)

A subset of the unidentified EGRET gamma-ray sources with no active galactic nucleus or other conspicuous counterpart appears to be concentrated at medium latitudes. Their long-term variability and their spatial distribution indicate that they are distinct from the more persistent sources associated with the nearby Gould Belt. They exhibit a large scale height of 1.3 +/- 0.6 kpc above the Galactic plane. Potential counterparts for these sources include microquasars accreting from a low-mass star and spewing a continuous jet. Detailed calculations have been performed of the jet inverse Compton emission in the radiation fields from the star, the accretion disc, and a hot corona. Different jet Lorentz factors, powers, and aspect angles have been explored. The up-scattered emission from the corona predominates below 100 MeV whereas the disc and stellar contributions are preponderant at higher energies for moderate (~15 deg) and small (~1 deg) aspect angles, respectively. Yet, unlike in the high-mass, brighter versions of these systems, the external Compton emission largely fails to produce the luminosities required for 5 to 10 kpc distant EGRET sources. Synchrotron-self-Compton emission appears as a promising alternative.

I. A. Grenier; M. M. Kaufman Bernado; G. E. Romero

2004-08-12T23:59:59.000Z

228

Far-Field Flow Forced by the Entrainment of a Convective Plane Plume in a Rotating Stratified Fluid  

Science Conference Proceedings (OSTI)

The streamfunction for a two-dimensional (line) mass sink in an unbounded rotating stratified fluid on an f-plane is derived using the linearized equations of motion. The solution is applied to the large scale circulation forced by the ...

N. Robb McDonald

1990-11-01T23:59:59.000Z

229

A Consistent Theory for Linear Waves of the Shallow-Water Equations on a Rotating Plane in Midlatitudes  

Science Conference Proceedings (OSTI)

The present study provides a consistent and unified theory for the three types of linear waves of the shallow-water equations (SWE) in a zonal channel on the ? plane: Kelvin, inertia–gravity (Poincaré), and planetary (Rossby). The new theory is ...

Nathan Paldor; Shira Rubin; Arthur J. Mariano

2007-01-01T23:59:59.000Z

230

Statistical Mechanics of Image Restoration by the Plane Rotator Model Yo^hei SAIKA and Hidetoshi NISHIMORI1  

E-Print Network (OSTI)

Statistical Mechanics of Image Restoration by the Plane Rotator Model Yo^hei SAIKA and Hidetoshi) On the basis of statistical mechanics formulation for problems of image restoration and error- correcting codes image is faster than that by the Ising model at low temperature. KEYWORDS: statistical mechanics, image

Nishimori, Hidetoshi

231

Parameter Sweep Experiments on Spontaneous Gravity Wave Radiation from Unsteady Rotational Flow in an f-Plane Shallow Water System  

Science Conference Proceedings (OSTI)

Inertial gravity wave radiation from an unsteady rotational flow (spontaneous radiation) is investigated numerically in an f-plane shallow water system for a wide range of Rossby numbers, 1 ? Ro ? 1000, and Froude numbers, 0.1 ? Fr ? 0.8. A ...

Norihiko Sugimoto; Keiichi Ishioka; Katsuya Ishii

2008-01-01T23:59:59.000Z

232

Growth of p-type and n-type m-plane GaN by molecular beam epitaxy  

E-Print Network (OSTI)

cm ?3 corresponding to p-type ?lm conductivi- ties as highOF APPLIED PHYSICS 100, 063707 ?2006? Growth of p-type andn-type m-plane GaN by molecular beam epitaxy M. McLaurin, a?

McLaurin, M; Mates, T E; Wu, F; Speck, J S

2006-01-01T23:59:59.000Z

233

Bounds on the Growth of Perturbations to Non-Parallel Steady Flow on the Barotropic Beta Plane  

Science Conference Proceedings (OSTI)

Based on consideration of the perturbation enstrophy and energy equations, we have derived a general family of bounds on the growth rates of perturbations to non-parallel (vortex-like or wave-like) flow on the barotropic beta-plane, allowing for ...

R. T. Pierrehumbert

1983-05-01T23:59:59.000Z

234

New closed-form thermoelastostatic Green function and Poisson-type integral formula for a quarter-plane  

Science Conference Proceedings (OSTI)

A new Green's function and a new Poisson-type integral formula for a boundary value problem (BVP) in thermoelastostatics for a quarter-plane subject by mixed homogeneous mechanical boundary conditions are derived in this paper. The thermoelastic displacements ... Keywords: Elasticity, Green's functions, Heat conduction, Poisson-type integral formula, Thermoelastic influence functions, Thermoelastostatics, Volume dilatation

Victor ?Eremet; Guy Bonnet

2011-01-01T23:59:59.000Z

235

Large-Scale cost-based abduction in full-fledged first-order predicate logic with cutting plane inference  

Science Conference Proceedings (OSTI)

Abduction is inference to the best explanation. Abduction has long been studied intensively in a wide range of contexts, from artificial intelligence research to cognitive science. While recent advances in large-scale knowledge acquisition warrant applying ... Keywords: abduction, cost-based abduction, cutting plane inference, integer linear programming

Naoya Inoue; Kentaro Inui

2012-09-01T23:59:59.000Z

236

Nonlinear Wave–Wave Interactions in a One-Layer Reduced-Gravity Model on the Equatorial ? Plane  

Science Conference Proceedings (OSTI)

A one-layer reduced-gravity model in the unbounded equatorial ? plane is the simplest way to study nonlinear effects in a tropical ocean. The free evolution of the system is constrained by the existence of several conserved quantities, namely, ...

P. Ripa

1982-01-01T23:59:59.000Z

237

On elements of order p^s in the plane Cremona group over a field of characteristic p  

E-Print Network (OSTI)

We show that the plane Cremona group over a field of characteristic p > 0 does not contain elements of power of p larger than 2 and it does not contain elements of order p^2 unless p =2. Also we describe conjugacy classes of elements of order 4.

Dolgachev, Igor V

2008-01-01T23:59:59.000Z

238

THE BOLOCAM GALACTIC PLANE SURVEY. VII. CHARACTERIZING THE PROPERTIES OF MASSIVE STAR-FORMING REGIONS  

SciTech Connect

We present the results of a Green Bank Telescope survey of NH{sub 3}(1,1), (2,2), (3,3) lines toward 631 Bolocam Galactic Plane Survey (BGPS) sources at a range of Galactic longitudes in the inner Galaxy. We have detected the NH{sub 3}(1,1) line toward 72% of our targets (456), demonstrating that the high column density features identified in the BGPS and other continuum surveys accurately predict the presence of dense gas. We have determined kinematic distances and resolved the distance ambiguity for all BGPS sources detected in NH{sub 3}. The BGPS sources trace the locations of the Scutum and Sagittarius spiral arms, with the number of sources. We measure the physical properties of each source and find that depending on the distance, BGPS sources are primarily clumps, with some cores and clouds. We have examined the physical properties as a function of Galactocentric distance, and find a mean gas kinetic temperature of 15.6 K, and that the NH{sub 3} column density and abundance decrease by nearly an order of magnitude. Comparing sources at similar distances demonstrates that the physical properties are indistinguishable, which suggests a similarity in clump structure across the Galactic disk. We have also compared the BGPS sources to criteria for efficient star formation presented independently by Heiderman et al. and Lada et al., and for massive star formation presented by Kauffmann et al. Forty-eight percent of our sample should be forming stars (including massive stars) with high efficiency, and 87% contain subregions that should be efficiently forming stars. Indeed, we find that 67% of the sample exhibit signs of star formation activity based on an association with a mid-infrared source.

Dunham, Miranda K. [Department of Astronomy, Yale University, New Haven, CT 06520-8101 (United States); Rosolowsky, Erik [Department of Physics and Astronomy, University of British Columbia, Okanagan, Kelowna BC V1V 1V7 (Canada); Evans II, Neal J. [Department of Astronomy, University of Texas at Austin, Austin, Texas 78712-0259 (United States); Cyganowski, Claudia [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Urquhart, James S., E-mail: miranda.dunham@yale.edu [CSIRO Astronomy and Space Science, Epping, NSW 1710 (Australia)

2011-11-10T23:59:59.000Z

239

VERY LOW MASS STELLAR AND SUBSTELLAR COMPANIONS TO SOLAR-LIKE STARS FROM MARVELS. II. A SHORT-PERIOD COMPANION ORBITING AN F STAR WITH EVIDENCE OF A STELLAR TERTIARY AND SIGNIFICANT MUTUAL INCLINATION  

Science Conference Proceedings (OSTI)

We report the discovery via radial velocity (RV) measurements of a short-period (P = 2.430420 {+-} 0.000006 days) companion to the F-type main-sequence star TYC 2930-00872-1. A long-term trend in the RV data also suggests the presence of a tertiary stellar companion with P > 2000 days. High-resolution spectroscopy of the host star yields T{sub eff} = 6427 {+-} 33 K, log g = 4.52 {+-} 0.14, and [Fe/H] = -0.04 {+-} 0.05. These parameters, combined with the broadband spectral energy distribution (SED) and a parallax, allow us to infer a mass and radius of the host star of M{sub 1} = 1.21 {+-} 0.08 M{sub Sun} and R{sub 1} = 1.09{sup +0.15}{sub -0.13} R{sub Sun }. The minimum mass of the inner companion is below the hydrogen-burning limit; however, the true mass is likely to be substantially higher. We are able to exclude transits of the inner companion with high confidence. Further, the host star spectrum exhibits a clear signature of Ca H and K core emission, indicating stellar activity, but a lack of photometric variability and small vsin I suggest that the primary's spin axis is oriented in a pole-on configuration. The rotational period of the primary estimated through an activity-rotation relation matches the orbital period of the inner companion to within 1.5 {sigma}, suggesting that the primary and inner companion are tidally locked. If the inner companion's orbital angular momentum vector is aligned with the stellar spin axis as expected through tidal evolution, then it has a stellar mass of {approx}0.3-0.4 M{sub Sun }. Direct imaging limits the existence of stellar companions to projected separations <30 AU. No set of spectral lines and no significant flux contribution to the SED from either companion are detected, which places individual upper mass limits of M{sub {l_brace}2,3{r_brace}} {approx}< 1.0 M{sub Sun }, provided they are not stellar remnants. If the tertiary is not a stellar remnant, then it likely has a mass of {approx}0.5-0.6 M{sub Sun }, and its orbit is likely significantly inclined from that of the secondary, suggesting that the Kozai-Lidov mechanism may have driven the dynamical evolution of this system.

Fleming, Scott W.; Ge Jian; De Lee, Nathan; Jiang Peng; Lee, Brian; Nelson, Ben [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 2611-2055 (United States); Barnes, Rory [Department of Astronomy, University of Washington, P.O. Box 351580, Seattle, WA 98195 (United States); Beatty, Thomas G.; Gaudi, B. Scott; Shappee, Benjamin J. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Crepp, Justin R. [Department of Astronomy, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 (United States); Esposito, Massimiliano; Femenia, Bruno; Gonzalez Hernandez, Jonay I. [Instituto de Astrofisica de Canarias (IAC), E-38205 La Laguna, Tenerife (Spain); Ferreira, Leticia; Porto de Mello, Gustavo F. [Observatorio do Valongo, Universidade Federal do Rio de Janeiro, Ladeira do Pedro Antonio, 43, CEP: 20080-090, Rio de Janeiro, RJ (Brazil); Gary, Bruce; Hebb, Leslie; Stassun, Keivan [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Ghezzi, Luan, E-mail: scfleming@psu.edu [Laboratorio Interinstitucional de e-Astronomia, LIneA, Rua Gal. Jose Cristino 77, Rio de Janeiro, RJ-20921-400 (Brazil); and others

2012-09-15T23:59:59.000Z

240

Photoluminescence associated with basal stacking faults in c-plane ZnO epitaxial film grown by atomic layer deposition  

Science Conference Proceedings (OSTI)

Basal plane stacking faults (BSFs) with density of {approx}1 x 10{sup 6} cm{sup -1} are identified as the dominant defect in the annealed ZnO thin films grown on c-plane sapphire by atomic layer deposition. The dominant peak centered at 3.321 eV in low-temperature photoluminescence measurements is attributed to the emission from the BSFs. The emission mechanism is considered to be the confined indirect excitons in the region of quantum-well-like structure formed by the BSFs. The observed energy shift of 19 meV with respect to the BSF-bounded exciton at low temperature may be caused by the localization effect associated with the coupling between BSF quantum wells.

Yang, S.; Kuo, C. C.; Hsieh, W. F. [Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan (China); Liu, W.-R. [Scientific Research Division, National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China); Lin, B. H. [Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan (China); Scientific Research Division, National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China); Hsu, H.-C. [Institute of Electro-Optical Science and Engineering and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 70101, Taiwan (China); Hsu, C.-H. [Scientific Research Division, National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China); Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan (China)

2012-03-05T23:59:59.000Z

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241

In-Plane Electronic Anisotropy of Underdoped ___122___ Fe-Arsenide Superconductors Revealed by Measurements of Detwinned Single Crystals  

SciTech Connect

The parent phases of the Fe-arsenide superconductors harbor an antiferromagnetic ground state. Significantly, the Neel transition is either preceded or accompanied by a structural transition that breaks the four fold symmetry of the high-temperature lattice. Borrowing language from the field of soft condensed matter physics, this broken discrete rotational symmetry is widely referred to as an Ising nematic phase transition. Understanding the origin of this effect is a key component of a complete theoretical description of the occurrence of superconductivity in this family of compounds, motivating both theoretical and experimental investigation of the nematic transition and the associated in-plane anisotropy. Here we review recent experimental progress in determining the intrinsic in-plane electronic anisotropy as revealed by resistivity, reflectivity and ARPES measurements of detwinned single crystals of underdoped Fe arsenide superconductors in the '122' family of compounds.

Fisher, Ian Randal

2012-05-08T23:59:59.000Z

242

Multi-facet concentrator of solar setup for irradiating the objects placed in a target plane with solar light  

DOE Patents (OSTI)

According to the proposed invention, this technical result is achieved so that many-facet concentrator of a solar setup for exposure of objects, placed in a target plane, to the action of solar radiation containing a supporting frame and facets differing by that the facets of the concentrator are chosen with spherical focusing reflective surfaces of equal focal lengths and with selective coatings reflecting a desired spectral fraction of solar radiation, and are arranged on the supporting frame symmetrically with respect to the common axis of the concentrator, their optical axes being directed to the single point on the optical axis of the concentrator located before the nominal focus point of the concentrator and determining the position of arranging the target plane.

Lewandowski, Allan A. (Evergreen, CO); Yampolskiy, Vladislav (Moscow, RU); Alekseev, Valerie (Moscow, RU); Son, Valentin (Moscow, RU)

2001-01-01T23:59:59.000Z

243

Test of Fermi Gas Model and Plane-Wave Impulse Approximation Against Electron-Nucleus Scattering Data  

E-Print Network (OSTI)

A widely used relativistic Fermi gas model and plane-wave impulse approximation are tested against electron-nucleus scattering data. Inclusive quasi-elastic cross section are calculated and compared with high-precision data for C, O, and Ca. A dependence of agreement between calculated cross section and data on a momentum transfer is shown. Results for the C(nu_mu,mu) reaction are presented and compared with experimental data of the LSND collaboration.

A. V. Butkevich; S. P. Mikheyev

2005-04-30T23:59:59.000Z

244

Cost of a Ride: The Effects of Densities on Fixed-Guideway Transit Ridership and Capital Costs  

E-Print Network (OSTI)

rail transit capital cost study update final. Washington,2005). Managing Capital Costs of Major Federally Fundedin US rail transit project cost overrun. Transportation

Guerra, Erick; Cervero, Robert

2010-01-01T23:59:59.000Z

245

Double row loop-coil configuration for high-speed electrodynamic maglev suspension, guidance, propulsion and guideway directional switching  

DOE Green Energy (OSTI)

A stabilization and propulsion system comprising a series of loop-coils arranged in parallel rows wherein two rows form a magnetic rail. Levitation and lateral stability is provided when the induced field in the magnetic rails interacts with the superconducting magnets (SCM) mounted on the magnetic levitation vehicle. A multiphase propulsion system interconnects specific coils in a given magnetic rail and interacts with the SCM to produce a propulsion force to the vehicle.

He, J.; Rote, D.M.

1994-12-31T23:59:59.000Z

246

Double row loop-coil configuration for high-speed electrodynamic maglev suspension, guidance, propulsion and guideway directional switching  

DOE Patents (OSTI)

A stabilization and propulsion system comprising a series of loop-coils arranged in parallel rows wherein two rows combine to form one of two magnetic rails. Levitation and lateral stability are provided when the induced field in the magnetic rails interacts with the superconducting magnets mounted on the magnetic levitation vehicle. The loop-coils forming the magnetic rails have specified dimensions and a specified number of turns and by constructing differently these specifications, for one rail with respect to the other, the angle of tilt of the vehicle can be controlled during directional switching. Propulsion is provided by the interaction of a traveling magnetic wave associated with the coils forming the rails and the super conducting magnets on the vehicle.

He, Jianliang (Naperville, IL); Rote, Donald M. (Lagrange, IL)

1996-01-01T23:59:59.000Z

247

Double row loop-coil configuration for high-speed electrodynamic maglev suspension, guidance, propulsion and guideway directional switching  

DOE Patents (OSTI)

A stabilization and propulsion system are disclosed comprising a series of loop-coils arranged in parallel rows wherein two rows combine to form one of two magnetic rails. Levitation and lateral stability are provided when the induced field in the magnetic rails interacts with the superconducting magnets mounted on the magnetic levitation vehicle. The loop-coils forming the magnetic rails have specified dimensions and a specified number of turns and by constructing differently these specifications, for one rail with respect to the other, the angle of tilt of the vehicle can be controlled during directional switching. Propulsion is provided by the interaction of a traveling magnetic wave associated with the coils forming the rails and the superconducting magnets on the vehicle. 12 figs.

He, J.; Rote, D.M.

1996-05-21T23:59:59.000Z

248

In-plane ultrasonic velocity measurement of longitudinal and shear waves in the machine direction with transducers in rotating wheels  

DOE Patents (OSTI)

An improved system for measuring the velocity of ultrasonic signals within the plane of moving web-like materials, such as paper, paperboard and the like. In addition to velocity measurements of ultrasonic signals in the plane of the web in the MD and CD, one embodiment of the system in accordance with the present invention is also adapted to provide on-line indication of the polar specific stiffness of the moving web. In another embodiment of the invention, the velocity of ultrasonic signals in the plane of the web are measured by way of a plurality of ultrasonic transducers carried by synchronously driven wheels or cylinders, thus eliminating undue transducer wear due to any speed differences between the transducers and the web. In order to provide relatively constant contact force between the transducers and the webs, the transducers are mounted in a sensor housings which include a spring for biasing the transducer radially outwardly. The sensor housings are adapted to be easily and conveniently mounted to the carrier to provide a relatively constant contact force between the transducers and the moving web.

Hall, Maclin S. (Marietta, GA); Jackson, Theodore G. (Atlanta, GA); Knerr, Christopher (Lawrenceville, GA)

1998-02-17T23:59:59.000Z

249

In-plane ultrasonic velocity measurement of longitudinal and shear waves in the machine direction with transducers in rotating wheels  

DOE Patents (OSTI)

An improved system for measuring the velocity of ultrasonic signals within the plane of moving web-like materials, such as paper, paperboard and the like. In addition to velocity measurements of ultrasonic signals in the plane of the web in the MD and CD, one embodiment of the system in accordance with the present invention is also adapted to provide on-line indication of the polar specific stiffness of the moving web. In another embodiment of the invention, the velocity of ultrasonic signals in the plane of the web are measured by way of a plurality of ultrasonic transducers carried by synchronously driven wheels or cylinders, thus eliminating undue transducer wear due to any speed differences between the transducers and the web. In order to provide relatively constant contact force between the transducers and the webs, the transducers are mounted in a sensor housings which include a spring for biasing the transducer radially outwardly. The sensor housings are adapted to be easily and conveniently mounted to the carrier to provide a relatively constant contact force between the transducers and the moving web. 37 figs.

Hall, M.S.; Jackson, T.G.; Knerr, C.

1998-02-17T23:59:59.000Z

250

Orientation factor and number of fibers at failure plane in ring-type steel fiber reinforced concrete  

SciTech Connect

Considering the probabilistic distributions of fibers in ring-type steel fiber reinforced concrete, the orientation factor and the number of ring-type steel fibers crossing the failure plane were theoretically derived as a function of fiber geometry, specimen dimensions, and fiber volume fraction. A total number of 24 specimens were tested incorporating different fiber types, specimen geometry, and fiber volume fractions of 0.2% and 0.4%: 5 beams and 5 panels containing straight steel fibers; and 6 beams and 8 panels containing ring-type steel fibers. Measurements were made to assess the number of fibers at fractured surfaces of steel fiber reinforced concrete. The developed theoretical expressions reasonably predicted the orientation factor and the number of ring-type steel fibers at failure plane: the average and the standard deviation for the ratios of the test to theory were 1.03 and 0.26, respectively. Theoretical investigations and comparisons were made for the values of orientation factor and the number of fibers at failure plane for straight steel fibers and ring-type steel fibers.

Lee, C., E-mail: cdlee@cau.ac.k [School of Architecture and Building Science, Chung-Ang University, Seoul 156-756 (Korea, Republic of); Kim, H. [School of Architecture and Building Science, Chung-Ang University, Seoul 156-756 (Korea, Republic of)

2010-05-15T23:59:59.000Z

251

Size dependence of the nonlinear elastic softening of nanoscale graphene monolayers under plane-strain bulge tests: a molecular dynamics study  

Science Conference Proceedings (OSTI)

The pressure bulge test is an experimental technique to characterize the mechanical properties of microscale thin films. Here, we perform constant-temperature molecular dynamics simulations of the plane-strain cylindrical bulge test of nanosized monolayer ...

Sukky Jun; Tenzin Tashi; Harold S. Park

2011-01-01T23:59:59.000Z

252

Derivation of transformation equations for the parameters that characterize a plane acoustic wave without using phase invariance and Lorentz-Einstein transformation  

E-Print Network (OSTI)

We show that the transformation equations for the parameters that characterize a plane acoustic wave: period, (frequency), wave vector, wave length and phase velocity can be derived without using phase invariance and Lorentz-Einstein transformation

Bernhard Rothenstein

2005-06-20T23:59:59.000Z

253

Tight Correlations Between Massive Galaxy Structural Properties and Dynamics: The Mass Fundamental Plane Was in Place by z~2  

E-Print Network (OSTI)

The Fundamental Plane (FP) is an empirical relation between the size, surface brightness, and velocity dispersion of early-type galaxies. This relation has been studied extensively for early-type galaxies in the local universe to constrain galaxy formation mechanisms. The evolution of the zeropoint of this plane has been extended to high redshifts to study the luminosity evolution of massive galaxies, under the assumption of structural homology. In this work, we assess this assumption by replacing surface brightness with stellar mass density and present the evolution of the "mass FP" for massive, quiescent galaxies since z~2. By accounting for stellar populations, we thereby isolate and trace structural and dynamical evolution. Despite the observed dramatic evolution in the sizes and morphologies of massive galaxies since z~3, we find that quiescent galaxies lie on the mass FP out to z~2. In contrast with ~1.4 dex evolution in the luminosity FP, average residuals from the z~0 mass FP are less than ~0.15 dex s...

Bezanson, Rachel; van de Sande, Jesse; Franx, Marijn; Leja, Joel; Kriek, Mariska

2013-01-01T23:59:59.000Z

254

Semi-metal-insulator transition on the surface of a topological insulator with in-plane magnetization  

E-Print Network (OSTI)

A thin film of ferromagnetically ordered material proximate to the surface of a three-dimensional topological insulator explicitly breaks the time-reversal symmetry of the surface states. For an out-of-plane ferromagnetic order parameter on the surface, the parity is also broken, since the Dirac fermions become massive. This leads in turn to the generation of a topological Chern-Simons term by quantum fluctuations. On the other hand, for an in-plane magnetization the surface states remain gapless for the non-interacting Dirac fermions. In this work we study the possibility of spontaneous breaking of parity due to a dynamical gap generation on the surface in the presence of a local, Hubbard-like, interaction of strength $g$ between the Dirac fermions. A gap and a Chern-Simons term are generated for $g$ larger than some critical value, g_c, provided the number of Dirac fermions, $N$, is odd. For an even number of Dirac fermions the masses are generated in pairs having opposite signs, and no Chern-Simons term is generated. We discuss our results in the context of recent experiments in EuS/Bi_2Se_3 heterostructures.

Flavio S. Nogueira; Ilya Eremin

2013-04-10T23:59:59.000Z

255

Path integral action of a particle in a magnetic field in the noncommutative plane and the Aharonov-Bohm effect  

E-Print Network (OSTI)

The formulation of noncommutative quantum mechanics as a quantum system represented in the space of Hilbert-Schmidt operators is used to systematically derive, using the standard time slicing procedure, the path integral action for a particle moving in the noncommutative plane and in the presence of a magnetic field and an arbitrary potential. Using this action, the equation of motion and the energy spectrum for the partcle are obtained explicitly. The Aharonov-Bohm phase is derived using a variety of methods and several dualities between this system and other commutative and noncommutative systems are demonstrated. Finally, the equivalence of the path integral formulation with the noncommutative Schr\\"{o}dinger equation is also established.

Sunandan Gangopadhyay; Frederik G Scholtz

2013-09-12T23:59:59.000Z

256

Reaction Plane Dependent Away-side Modification and Near-side Ridge in Au+Au Collisions  

E-Print Network (OSTI)

STAR preliminary results of di-hadron correlations versus $\\phi_{s}$, the trigger particle azimuthal angle relative to the constructed event plane are reported for mid-central Au+Au collisions and compared to central Au+Au as well as minimum bias d+Au collisions. The correlations are observed to vary with $\\phi_{s}$ on both the near and away side of the trigger particle. The away-side correlation evolves from single- to double-peak with increasing $\\phi_{s}$. The near-side correlation is separated into 'jet' and 'ridge': the ridge is found to decrease with $\\phi_{s}$ while the jet remains relatively constant.

Aoqi Feng

2008-07-29T23:59:59.000Z

257

Fluctuations of charge separation perpendicular to the event plane and local parity violation in sqrt(sNN)=200 GeV Au+Au collisions at RHIC  

E-Print Network (OSTI)

Previous experimental results based on data (15 million events) collected by the STAR detector at RHIC suggest event-by-event charge separation fluctuations perpendicular to the event plane in non-central heavy-ion collisions. Here we present the correlator previously used split into its two component parts to reveal correlations parallel and perpendicular to the event plane. The results are from a high statistics 200 GeV Au+Au collisions data set (57 million events) collected by the STAR experiment. We explicitly count units of charge separation from which we find clear evidence for more charge separation fluctuations perpendicular than parallel to the event plane. We also employ a modified correlator to study the possible P-even background in same and opposite charge correlations, and find that the P-even background may largely be explained by momentum conservation and collective motion.

STAR Collaboration; L. Adamczyk; J. K. Adkins; G. Agakishiev; M. M. Aggarwal; Z. Ahammed; I. Alekseev; J. Alford; C. D. Anson; A. Aparin; D. Arkhipkin; E. Aschenauer; G. S. Averichev; J. Balewski; A. Banerjee; Z. Barnovska; D. R. Beavis; R. Bellwied; M. J. Betancourt; R. R. Betts; A. Bhasin; A. K. Bhati; Bhattarai; H. Bichsel; J. Bielcik; J. Bielcikova; L. C. Bland; I. G. Bordyuzhin; W. Borowski; J. Bouchet; A. V. Brandin; S. G. Brovko; E. Bruna; S. Bültmann; I. Bunzarov; T. P. Burton; J. Butterworth; H. Caines; M. Calderón de la Barca Sánchez; D. Cebra; R. Cendejas; M. C. Cervantes; P. Chaloupka; Z. Chang; S. Chattopadhyay; H. F. Chen; J. H. Chen; J. Y. Chen; L. Chen; J. Cheng; M. Cherney; A. Chikanian; W. Christie; P. Chung; J. Chwastowski; M. J. M. Codrington; R. Corliss; J. G. Cramer; H. J. Crawford; X. Cui; S. Das; A. Davila Leyva; L. C. De Silva; R. R. Debbe; T. G. Dedovich; J. Deng; R. Derradi de Souza; S. Dhamija; B. di Ruzza; L. Didenko; Dilks; F. Ding; A. Dion; P. Djawotho; X. Dong; J. L. Drachenberg; J. E. Draper; C. M. Du; L. E. Dunkelberger; J. C. Dunlop; L. G. Efimov; M. Elnimr; J. Engelage; K. S. Engle; G. Eppley; L. Eun; O. Evdokimov; R. Fatemi; S. Fazio; J. Fedorisin; R. G. Fersch; P. Filip; E. Finch; Y. Fisyak; C. E. Flores; C. A. Gagliardi; D. R. Gangadharan; D. Garand; F. Geurts; A. Gibson; S. Gliske; O. G. Grebenyuk; D. Grosnick; Y. Guo; A. Gupta; S. Gupta; W. Guryn; B. Haag; O. Hajkova; A. Hamed; L-X. Han; R. Haque; J. W. Harris; J. P. Hays-Wehle; S. Heppelmann; A. Hirsch; G. W. Hoffmann; D. J. Hofman; S. Horvat; B. Huang; H. Z. Huang; P. Huck; T. J. Humanic; G. Igo; W. W. Jacobs; C. Jena; E. G. Judd; S. Kabana; K. Kang; K. Kauder; H. W. Ke; D. Keane; A. Kechechyan; A. Kesich; D. P. Kikola; J. Kiryluk; I. Kisel; A. Kisiel; D. D. Koetke; T. Kollegger; J. Konzer; I. Koralt; W. Korsch; L. Kotchenda; P. Kravtsov; K. Krueger; I. Kulakov; L. Kumar; R. A. Kycia; M. A. C. Lamont; J. M. Landgraf; K. D. Landry; S. LaPointe; J. Lauret; A. Lebedev; R. Lednicky; J. H. Lee; W. Leight; M. J. LeVine; C. Li; W. Li; X. Li; X. Li; Y. Li; Z. M. Li; L. M. Lima; M. A. Lisa; F. Liu; T. Ljubicic; W. J. Llope; R. S. Longacre; X. Luo; G. L. Ma; Y. G. Ma; D. M. M. D. Madagodagettige Don; D. P. Mahapatra; R. Majka; S. Margetis; C. Markert; H. Masui; H. S. Matis; D. McDonald; T. S. McShane; S. Mioduszewski; M. K. Mitrovski; Y. Mohammed; B. Mohanty; M. M. Mondal; M. G. Munhoz; M. K. Mustafa; M. Naglis; B. K. Nandi; Md. Nasim; T. K. Nayak; J. M. Nelson; L. V. Nogach; J. Novak; G. Odyniec; A. Ogawa; K. Oh; A. Ohlson; V. Okorokov; E. W. Oldag; R. A. N. Oliveira; D. Olson; M. Pachr; B. S. Page; S. K. Pal; Y. X. Pan; Y. Pandit; Y. Panebratsev; T. Pawlak; B. Pawlik; H. Pei; C. Perkins; W. Peryt; P. Pile; M. Planinic; J. Pluta; D. Plyku; N. Poljak; J. Porter; A. M. Poskanzer; C. B. Powell; C. Pruneau; N. K. Pruthi; M. Przybycien; P. R. Pujahari; J. Putschke; H. Qiu; S. Ramachandran; R. Raniwala; S. Raniwala; R. L. Ray; C. K. Riley; H. G. Ritter; J. B. Roberts; O. V. Rogachevskiy; J. L. Romero; J. F. Ross; A. Roy; L. Ruan; J. Rusnak; N. R. Sahoo; P. K. Sahu; I. Sakrejda; S. Salur; A. Sandacz; J. Sandweiss; E. Sangaline; A. Sarkar; J. Schambach; R. P. Scharenberg; A. M. Schmah; B. Schmidke; N. Schmitz; T. R. Schuster; J. Seger; P. Seyboth; N. Shah; E. Shahaliev; M. Shao; B. Sharma; M. Sharma; W. Q. Shen; S. S. Shi; Q. Y. Shou; E. P. Sichtermann; R. N. Singaraju; M. J. Skoby; D. Smirnov; N. Smirnov; D. Solanki; P. Sorensen; U. G. deSouza; H. M. Spinka; B. Srivastava; T. D. S. Stanislaus; J. R. Stevens; R. Stock; M. Strikhanov; B. Stringfellow; A. A. P. Suaide; M. C. Suarez; M. Sumbera; X. M. Sun; Y. Sun; Z. Sun; B. Surrow; D. N. Svirida; T. J. M. Symons; A. Szanto de Toledo; J. Takahashi; A. H. Tang; Z. Tang; L. H. Tarini; T. Tarnowsky; J. H. Thomas; A. R. Timmins; D. Tlusty; M. Tokarev; S. Trentalange; R. E. Tribble; P. Tribedy; B. A. Trzeciak; O. D. Tsai; J. Turnau; T. Ullrich; D. G. Underwood; G. Van Buren; G. van Nieuwenhuizen; J. A. Vanfossen, Jr.; R. Varma; G. M. S. Vasconcelos; R. Vertesi; F. Videbæk; Y. P. Viyogi; S. Vokal; S. A. Voloshin; A. Vossen; M. Wada; M. Walker; F. Wang; G. Wang; H. Wang; J. S. Wang; Q. Wang; X. L. Wang; Y. Wang; G. Webb; J. C. Webb; G. D. Westfall; H. Wieman; S. W. Wissink; R. Witt; Y. F. Wu; Z. Xiao; W. Xie; K. Xin; H. Xu; N. Xu; Q. H. Xu; W. Xu; Y. Xu; Z. Xu; Yan; C. Yang; Y. Yang; Y. Yang; P. Yepes; L. Yi; K. Yip; I-K. Yoo; Y. Zawisza; H. Zbroszczyk; W. Zha; J. B. Zhang; S. Zhang; X. P. Zhang; Y. Zhang; Z. P. Zhang; F. Zhao; J. Zhao; C. Zhong; X. Zhu; Y. H. Zhu; Y. Zoulkarneeva; M. Zyzak

2013-02-15T23:59:59.000Z

258

Step-flow anisotropy of the m-plane GaN (1100) grown under nitrogen-rich conditions by plasma-assisted molecular beam epitaxy  

Science Conference Proceedings (OSTI)

The homoepitaxial growth of m-plane (1100) GaN was investigated by plasma-assisted molecular beam epitaxy under nitrogen-rich conditions. The surface morphologies as a function of sample miscut were studied, providing evidence for a strong growth anisotropy that is a consequence of the anisotropy of Ga adatom diffusion barriers on the m-plane surface recently calculated ab initio[Lymperakis and Neugebauer, Phys. Rev. B 79, 241308(R) (2009)]. We found that substrate miscut toward [0001] implies a step flow toward while substrate miscut toward [0001] causes formation of atomic steps either perpendicular or parallel to the [0001] direction, under N-rich conditions at 730 deg C. We describe the growth conditions for achieving atomically flat m-plane GaN layers with parallel atomic steps.

Sawicka, Marta; Siekacz, Marcin; Skierbiszewski, Czeslaw [Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, PL-01-142 Warszawa (Poland); TopGaN Ltd., Sokolowska 29/37, PL-01-142 Warszawa (Poland); Turski, Henryk; Krysko, Marcin; DziePcielewski, Igor; Grzegory, Izabella [Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, PL-01-142 Warszawa (Poland); Smalc-Koziorowska, Julita [Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, PL-01-142 Warszawa (Poland); TopGaN Ltd., Sokolowska 29/37, PL-01-142 Warszawa (Poland); Warsaw University of Technology, Faculty of Material Science and Engineering, Woloska 141, PL-02-507 Warszawa (Poland)

2011-06-15T23:59:59.000Z

259

Charting the TeV Milky Way: H.E.S.S. Galactic plane survey maps, catalog and source populations  

E-Print Network (OSTI)

Very-high-energy (VHE, E>100 GeV) gamma-rays provide a unique view of the non-thermal universe, tracing the most violent and energetic phenomena at work inside our Galaxy and beyond. The latest results of the H.E.S.S. Galactic Plane Survey (HGPS) undertaken by the High Energy Stereoscopic System (H.E.S.S.), an array of four imaging atmospheric Cherenkov telescopes located in Namibia, are described here. The HGPS aims at the detection of cosmic accelerators with environments suitable for the production of photons at the highest energies and has led to the discovery of an unexpectedly large and diverse population of over 60 sources of TeV gamma rays within its current range of l = 250 to 65 degrees in longitude and |b|<3.5 degrees in latitude. The data set of the HGPS comprises 2800 hours of high-quality data, taken in the years 2004 to 2013. The sensitivity for the detection of point-like sources, assuming a power-law spectrum with a spectral index of 2.3 at a statistical significance of 5 sigma, is now at ...

Carrigan, S; Chaves, R C G; Deil, C; Gast, H

2013-01-01T23:59:59.000Z

260

Dependence of asymmetries for charge distribution with respect to the reaction plane on initial energy in heavy ion collisions  

E-Print Network (OSTI)

In the paper two combinations of correlators are defined in order to investigate the evolution of possible $\\mathcal{P/CP}$ invariance violation in strong interactions with initial energy for heavy ion collisions. These combinations correspond to absolute and relative asymmetry of distribution of electrically charge particles with respect to the reaction plane in heavy ion collisions. Energy dependence of the parameters was derived from data of STAR and ALICE experiments. Significant decreasing both absolute and relative asymmetry is observed at energies $\\sqrt{s_{NN}} < 20$ GeV. This feature agrees qualitatively with other results of stage-I beam energy scan program in STAR experiment. General behavior of dependence of absolute asymmetry on initial energy agree reasonably with behavior of similar dependence of Chern -- Simons diffusion rate calculated at different values of external Abelian magnetic field. The observed behavior of understudying parameters vs energy can be considered as indication on possible transition to predominance of hadronic states over quark-gluon degrees of freedom in the mixed phase created in heavy ion collisions at intermediate energies.

V. A. Okorokov

2013-01-05T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" from the National Library of EnergyBeta (NLEBeta).
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261

Structural TEM study of nonpolar a-plane gallium nitride grown on (112_0) 4H-SiC by organometallic vapor phase epitaxy  

E-Print Network (OSTI)

nitride grown on (1120) 4H-SiC by organometallic vapor phasea-plane GaN grown on a 4H-SiC substrate with an AlN buffergrown on (0001) Al 2 O 3 , 6H-SiC or free- standing GaN

Zakharov, Dmitri N.; Liliental-Weber, Zuzanna; Wagner, Brian; Reitmeier, Zachary J.; Preble, Edward A.; Davis, Robert F.

2005-01-01T23:59:59.000Z

262

Wind-Driven Flow over Topography in a Zonal ?-Plane Channel: A Quasi-geostrophic Model of the Antarctic Circumpolar Current  

Science Conference Proceedings (OSTI)

The paper gives a detailed account of the dynamical balance of a wind-driven zonally unbounded flow over topography. The problem is investigated with a quasi-geostrophic ?-plane channel with two layers and eddy resolution. The channel has a width ...

J-O. Wolff; E. Maier-Reimer; D. J. Olbers

1991-02-01T23:59:59.000Z

263

Temperature-Dependence of Exciton Radiative Recombination in (Al,Ga)N/GaN Quantum Wells Grown on a-Plane GaN Substrates  

E-Print Network (OSTI)

5221, 34095 Montpellier, France E-mail: pmc53@cam.ac.uk Received October 12, 2012; accepted November 22, 2012; published online May 20, 2013 This article presents the dynamics of excitons in a-plane (Al,Ga)N/GaN single quantum wells of various...

Corfdir, Pierre; Dussaigne, Amélie; Teisseyre, Henryk; Suski, Tadeusz; Grzegory, Izabella; Lefebvre, Pierre; Giraud, Etienne; Shahmohammadi, Mehran; Phillips, Richard; Ganière, Jean-Daniel; Grandjean, Nicolas; Deveaud, Benoît

264

A Single-armed Manta-board as a New Diver-controlled Planing Board and Its Use for Underwater Surveys  

E-Print Network (OSTI)

A Single-armed Manta-board as a New Diver-controlled Planing Board and Its Use for Underwater, Australia. Abstract-Due to inadequacies ofprevi ous underwater towing techniques and the special needs of a recent underwater sur vey, a modified mania-board technique was developed. With this new technique

265

Assessment of model error in limited-area simulations of shallow water test cases on the C-grid plane and sphere  

Science Conference Proceedings (OSTI)

A suite of limited-area test cases for the solution of the shallow water (SW) equations on the plane and sphere are collected and evaluated using the Model for Predication Across Scales (MPAS) modeling system. Included are regional simulations of ...

Christopher A. Jeffery

266

Out-of-plane (e,2e) angular distributions and energy spectra of helium L = 0,1,2 autoionizing levels  

Science Conference Proceedings (OSTI)

Angular distribution and spectral (e,2e) measurements are reported for the helium autoionizing levels (2s{sup 2}){sup 1}S, (2p{sup 2}){sup 1}D, and (2s2p){sup 1}P. A special out-of-plane geometry is used where the ejected electrons are emitted in a plane perpendicular to the scattered electron direction. The kinematics are chosen so that this plane contains the momentum-transfer direction. While the recoil peak almost vanishes in the angular distribution for direct ionization, it remains significant for the autoionizing levels and exhibits a characteristic shape for each orbital angular momentum L=0,1,2. A second-order model in the projectile-target interaction correctly reproduces the observed magnitudes of the recoil peaks, but is a factor of 2 too large in the central out-of-plane region. Observed (e,2e) energy spectra for the three resonances over the full angular range are well reproduced by the second-order calculation. Calculations using a first-order model fail to reproduce both the magnitudes of the recoil peaks and the spectral line profiles.

Harak, B. A. de [Physics Department, Illinois Wesleyan University, P.O. Box 2900, Bloomington, Illinois 61702-2900 (United States); Bartschat, K. [Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States); Martin, N. L. S. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States)

2010-12-15T23:59:59.000Z

267

An analysis of lower-dimensional approximations to the scalar dissipation rate using direct numerical simulations of plane jet flames  

SciTech Connect

The difficulty of experimental measurements of the scalar dissipation rate in turbulent flames has required researchers to estimate the true three-dimensional (3D) scalar dissipation rate from one-dimensional (1D) or two-dimensional (2D) gradient measurements. In doing so, some relationship must be assumed between the true values and their lower dimensional approximations. We develop these relationships by assuming a form for the statistics of the gradient vector orientation, which enables several new results to be obtained and the true 3D scalar dissipation PDF to be reconstructed from the lower-dimensional approximations. We use direct numerical simulations (DNS) of turbulent plane jet flames to examine the orientation statistics, and verify our assumptions and final results. We develop and validate new theoretical relationships between the lower-dimensional and true moments of the scalar dissipation PDF assuming a log-normal true PDF. We compare PDFs reconstructed from lower-dimensional gradient projections with the true values and find an excellent agreement for a 2D simulated measurement and also for a 1D simulated measurement perpendicular to the mean flow variations. Comparisons of PDFs of thermal dissipation from DNS with those obtained via reconstruction from 2D experimental measurements show a very close match, indicating this PDF is not unique to a particular flame configuration. We develop a technique to reconstruct the joint PDF of the scalar dissipation and any other scalar, such as chemical species or temperature. Reconstructed conditional means of the hydroxyl mass fraction are compared with the true values and an excellent agreement is obtained.

Chen, Jackie [Sandia National Laboratories (SNL); Sankaran, Ramanan [ORNL; Hawkes, Evatt R [Sandia National Laboratories (SNL)

2009-05-01T23:59:59.000Z

268

Epitaxial growth of Ti{sub 3}SiC{sub 2} thin films with basal planes parallel or orthogonal to the surface on {alpha}-SiC  

SciTech Connect

The growth of Ti{sub 3}SiC{sub 2} thin films were studied onto {alpha}-SiC substrates differently oriented by thermal annealing of TiAl layers deposited by magnetron sputtering. For any substrate's orientation, transmission electron microscopy coupled with x-ray diffraction showed the coherent epitaxial growth of Ti{sub 3}SiC{sub 2} films along basal planes of SiC. Specifically for the (1120) 4H-SiC, Ti{sub 3}SiC{sub 2} basal planes are found to be orthogonal to the surface. The continuous or textured nature of Ti{sub 3}SiC{sub 2} films does not depend of the SiC stacking sequence and is explained by a step-flow mechanism of growth mode. The ohmic character of the contact was confirmed by current-voltage measurements.

Drevin-Bazin, A.; Barbot, J. F.; Alkazaz, M.; Cabioch, T.; Beaufort, M. F. [Institut Pprime, UPR 3346, CNRS-Universite de Poitiers-ENSMA, Departement de Physique et Mecanique des Materiaux, SP2MI, Teleport 2, Bd M. et P. Curie, BP 30179, F-86962 Futuroscope-Chasseneuil (France)

2012-07-09T23:59:59.000Z

269

Soft-boundary graphene nanoribbon formed by a graphene sheet above a perturbed ground plane: conductivity pro?le and SPP modal current distribution  

E-Print Network (OSTI)

An infinite sheet of graphene lying above a perturbed ground plane is studied. The perturbation is a two dimensional ridge, and a bias voltage is applied between the graphene and the ground plane, resulting in a graphene nanoribbonlike structure with a soft-boundary (SB) The spatial distribution of the graphene conductivity forming the soft-boundary is studied as a function of the ridge parameters and the bias voltage. The current distribution of the fundamental TM surface plasmon polariton (SPP) is considered. The effect of the ridge parameters and shape of the soft boundary on the current distributions are investigated, and the conditions are studied under which the mode remains confined to the vicinity of the ridge region.

Forati, Ebrahim

2013-01-01T23:59:59.000Z

270

Resonant-plane locking and spin alignment in stellar-mass black-hole binaries: a diagnostic of compact-binary formation  

E-Print Network (OSTI)

We study the influence of astrophysical formation scenarios on the precessional dynamics of spinning black-hole binaries by the time they enter the observational window of second- and third-generation gravitational-wave detectors, such as Advanced LIGO/Virgo, LIGO-India, KAGRA and the Einstein Telescope. Under the plausible assumption that tidal interactions are efficient at aligning the spins of few-solar mass black-hole progenitors with the orbital angular momentum, we find that black-hole spins should be expected to preferentially lie in a plane when they become detectable by gravitational-wave interferometers. This "resonant plane" is identified by the conditions \\Delta\\Phi=0{\\deg} or \\Delta\\Phi=+/-180{\\deg}, where \\Delta\\Phi is the angle between the components of the black-hole spins in the plane orthogonal to the orbital angular momentum. If the angles \\Delta \\Phi can be accurately measured for a large sample of gravitational-wave detections, their distribution will constrain models of compact binary formation. In particular, it will tell us whether tidal interactions are efficient and whether a mechanism such as mass transfer, stellar winds, or supernovae can induce a mass-ratio reversal (so that the heavier black hole is produced by the initially lighter stellar progenitor). Therefore our model offers a concrete observational link between gravitational-wave measurements and astrophysics. We also hope that it will stimulate further studies of precessional dynamics, gravitational-wave template placement and parameter estimation for binaries locked in the resonant plane.

Davide Gerosa; Michael Kesden; Emanuele Berti; Richard O'Shaughnessy; Ulrich Sperhake

2013-02-18T23:59:59.000Z

271

Identification of MHF (massive hydraulic fracturing) fracture planes and flow paths: A correlation of well log data with patterns in locations of induced seismicity  

DOE Green Energy (OSTI)

One of the critical steps in developing a hot dry rock geothermal system is the creation of flow paths through the rock between two wellbores. To date, circulation systems have only been created by drilling one wellbore, hydraulically fracturing the well (which induces microearthquakes), locating the microearthquakes and then drilling a second wellbore through the zone of seismicity. A technique for analyzing the pattern of seismicity to determine where fracture planes are located in the seismically active region has recently been developed. This allows us to distinguish portions of the seismically active volume which are most likely to contain significant flow paths. We applied this technique to seismic data collected during a massive hydraulic fracturing (MHF) treatment and found that the fracture planes determined by the seismic method are confirmed by borehole temperature and caliper logs which indicate where permeable fractures and/or zones of weakness intersect the wellbores. A geometric model based on these planes and well log data has enhanced our understanding of the reservoir flow paths created by fracturing and is consistent with results obtained during production testing of the reservoir.

Dreesen, D.; Malzahn, M.; Fehler, M.; Dash, Z.

1987-01-01T23:59:59.000Z

272

Meandering of liquid rivulets on partially wetting inclines  

E-Print Network (OSTI)

at the point where the light rays emanating from a light emitting diode are focussed by the lens. The minimal

Daerr, Adrian - Laboratoire Matière et Systèmes Complexes, Université Paris 7

273

A forgotten little chapter on isoperimetric inequalities: On the fraction of a convex and closed plane area lying outside a circle with which it shares a diameter  

E-Print Network (OSTI)

Often some interesting or simply curious points are left out when developing a theory. It seems that one of them is the existence of an upper bound for the fraction of area of a convex and closed plane area lying outside a circle with which it shares a diameter, a problem stemming from the theory of isoperimetric inequalities. In this paper such a bound is constructed and shown to be attained for a particular area. It is also shown that convexity is a necessary condition in order to avoid the whole area lying outside the circle.

Jose M. Pacheco

2007-01-21T23:59:59.000Z

274

In-plane ESR microwave conductivity measurements and electronic band structure studies of the organic superconductor, {beta}'-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}.  

SciTech Connect

The electronic structure of the organic superconductor {beta}''-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3} (BEDT-TTF is bis(ethylenedithio)tetrathiafulvalene) was characterized with the use of electron spin resonance (ESR) spectroscopy and electronic band structure calculations. The room-temperature ESR line width is 24-27 G in the plane of a donor molecule layer (i.e., in the ab-plane) and {approx}32 G along the normal to this plane (i.e., along the c*-direction). The ab-plane anisotropy of the microwave conductivity was extracted for the first time from the ESR Dysonian line shape analysis. The in-plane conductivity varies sinusoidally, is maximal along the interstack direction (b-axis), and is minimal along the donor stack direction (a-axis). The Fermi surfaces of the title compound consist of a 2D hole pocket and a pair of 1D wavy lines. The directions for the in-plane conductivity maximum and minimum are in excellent agreement with the electronic band structure calculated for {beta}''-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}, and the origin of the in-plane conductivity anisotropy lies in the one-dimensional part of the Fermi surface. This is the first time that an organic conductor shows Dysonian ESR line shape due to its 2D and strongly metallic nature, yet the 1D character is revealed simultaneously through the in-plane conductivity anisotropy.

Wang, H. H.; VanZile, M. L.; Schlueter, J. A.; Geiser, U.; Kini, A. M.; Sche, P. P.; Koo, H.-J.; Whangbo, M.-H.; Nixon, P. G.; Winter, R. W.; Gard, G. L.; Chemistry; North Carolina State Univ.; Portland State Univ.

1999-07-01T23:59:59.000Z

275

The Bolocam Galactic Plane Survey IV: 1.1 and 0.35 mm Dust Continuum Emission in the Galactic Center Region  

E-Print Network (OSTI)

The Bolocam Galactic Plane Survey (BGPS) data for a six square degree region of the Galactic plane containing the Galactic center is analyzed and compared to infrared and radio continuum data. The BGPS 1.1 mm emission consists of clumps interconnected by a network of fainter filaments surrounding cavities, a few of which are filled with diffuse near-IR emission indicating the presence of warm dust or with radio continuum characteristic of HII regions or supernova remnants. New 350 {\\mu}m images of the environments of the two brightest regions, Sgr A and B, are presented. Sgr B2 is the brightest mm-emitting clump in the Central Molecular Zone and may be forming the closest analog to a super star cluster in the Galaxy. The Central Molecular Zone (CMZ) contains the highest concentration of mm and sub-mm emitting dense clumps in the Galaxy. Most 1.1 mm features at positive longitudes are seen in silhouette against the 3.6 to 24 {\\mu}m background observed by the Spitzer Space Telescope. However, only a few clumps ...

Bally, John; Battersby, Cara; Bradley, Eric Todd; Cyganowski, Claudia; Dowell, Darren; Drosback, Meredith; Dunham, Miranda K; Evans, Neal J; Ginsburg, Adam; Glenn, Jason; Harvey, Paul; Mills, Elisabeth; Merello, Manuel; Rosolowsky, Erik; Schlingman, Wayne; Shirley, Yancy L; Stringfellow, Guy S; Walawender, Josh; Williams, Jonathan; 10.1088/0004-637X/721/1/137

2010-01-01T23:59:59.000Z

276

Electron acceleration and emission in a field of a plane and converging dipole wave of relativistic amplitudes with the radiation reaction force taken into account  

SciTech Connect

A comparative analysis is performed of the electron emission characteristics as the electrons move in laser fields with ultra-relativistic intensity and different configurations corresponding to a plane or tightly focused wave. For a plane travelling wave, analytical expressions are derived for the emission characteristics, and it is shown that the angular distribution of the radiation intensity changes qualitatively even when the wave intensity is much less than that in the case of the radiation-dominated regime. An important conclusion is drawn that the electrons in a travelling wave tend to synchronised motion under the radiation reaction force. The characteristic features of the motion of electrons are found in a converging dipole wave, associated with the curvature of the phase front and nonuniformity of the field distribution. The values of the maximum achievable longitudinal momenta of electrons accelerated to the centre, as well as their distribution function are determined. The existence of quasi-periodic trajectories near the focal region of the dipole wave is shown, and the characteristics of the emission of both accelerated and oscillating electrons are analysed. (extreme light fields and their applications)

Bashinov, Aleksei V; Gonoskov, Arkady A; Kim, A V; Marklund, Mattias; Mourou, G; Sergeev, Aleksandr M

2013-04-30T23:59:59.000Z

277

Impacts of anisotropic lattice relaxation on crystal mosaicity and luminescence spectra of m-plane Al{sub x}Ga{sub 1-x}N films grown on m-plane freestanding GaN substrates by NH{sub 3} source molecular beam epitaxy  

SciTech Connect

In-plane anisotropic lattice relaxation was correlated with the crystal mosaicity and luminescence spectra for m-plane Al{sub x}Ga{sub 1-x}N films grown on a freestanding GaN substrate by NH{sub 3}-source molecular beam epitaxy. The homoepitaxial GaN film exhibited A- and B-excitonic emissions at 8 K, which obeyed the polarization selection rules. For Al{sub x}Ga{sub 1-x}N overlayers, the m-plane tilt mosaic along c-axis was the same as the substrate as far as coherent growth was maintained (x{<=}0.25). However, it became more severe than along the a-axis for lattice-relaxed films (x{>=}0.52). The results are explained in terms of anisotropic lattice and thermal mismatches between the film and the substrate. Nonetheless, all the Al{sub x}Ga{sub 1-x}N films exhibited a near-band-edge emission peak and considerably weak deep emission at room temperature.

Hoshi, T.; Hazu, K.; Ohshita, K.; Kagaya, M.; Onuma, T.; Chichibu, S. F. [CANTech, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577 (Japan); Fujito, K. [Optoelectronics Laboratory, Mitsubishi Chemical Corporation, 1000 Higashi-Mamiana, Ushiku 300-1295 (Japan); Namita, H. [Mitsubishi Chemical Group Science and Technology Research Center, Inc., 8-3-1 Chuo, Ami, Inashiki 300-0332 (Japan)

2009-02-16T23:59:59.000Z

278

Simulation of the excitation of quasi-plane wake waves in a plasma by a resonant sequence of laser pulses with a variable envelope  

SciTech Connect

Results are presented from full-scale numerical simulations of the excitation of wake waves by a sequence of weakly relativistic laser pulses in a subcritical plasma. Computations were carried out with a 2D3V version of the SUR-CA code that is based on the local-recursive nonlocal-asynchronous algorithm of the particle-in-cell method. The parameters of a train of laser pulses were chosen to correspond to the resonant excitation of the wake field. The curvature of the envelope of the pulses was chosen to depend on the number of the pulse in the train. Numerical simulations showed that there are plane waves during the first period of the plasma wave behind the pulse train.

Kalinnikova, E. I. [Moscow Engineering Physics Institute (Russian Federation); Levchenko, V. D. [Russian Academy of Sciences, Keldysh Institute of Applied Mathematics (Russian Federation)

2008-04-15T23:59:59.000Z

279

Influence of V/III growth flux ratio on trap states in m-plane GaN grown by ammonia-based molecular beam epitaxy  

Science Conference Proceedings (OSTI)

Deep level transient spectroscopy (DLTS) and deep level optical spectroscopy (DLOS) were utilized to investigate the behavior of deep states in m-plane, n-type GaN grown by ammonia-based molecular beam epitaxy (NH{sub 3}-MBE) as a function of systematically varied V/III growth flux ratios. Levels were detected at E{sub C} - 0.14 eV, E{sub C} - 0.21 eV, E{sub C} - 0.26 eV, E{sub C} - 0.62 eV, E{sub C} - 0.67 eV, E{sub C} - 2.65 eV, and E{sub C} - 3.31 eV, with the concentrations of several traps exhibiting systematic dependencies on V/III ratio. The DLTS spectra are dominated by traps at E{sub C} - 0.14 eV and E{sub C} - 0.67 eV, whose concentrations decreased monotonically with increasing V/III ratio and decreasing oxygen impurity concentration, and by a trap at E{sub C} - 0.21 eV that revealed no dependence of its concentration on growth conditions, suggestive of different physical origins. Higher concentrations of deeper trap states detected by DLOS with activation energies of E{sub C} - 2.65 eV and E{sub C} - 3.31 eV in each sample did not display measureable sensitivity to the intentionally varied V/III ratio, necessitating further study on reducing these deep traps through growth optimization for maximizing material quality of NH{sub 3}-MBE grown m-plane GaN.

Zhang, Z.; Arehart, A. R. [Department of Electrical and Computer Engineering, Ohio State University, Columbus, Ohio 43210 (United States); Hurni, C. A.; Speck, J. S. [Department of Materials, University of California, Santa Barbara, California 93106-5050 (United States); Ringel, S. A. [Department of Electrical and Computer Engineering, Ohio State University, Columbus, Ohio 43210 (United States); Institute for Materials Research, Ohio State University, Columbus, Ohio 43210 (United States)

2012-10-08T23:59:59.000Z

280

Growth study of nonpolar Zn{sub 1-x}Mg{sub x}O epitaxial films on a-plane bulk ZnO by plasma-assisted molecular beam epitaxy  

Science Conference Proceedings (OSTI)

Nonpolar Zn{sub 1-x}Mg{sub x}O epitaxial films were grown by plasma-assisted molecular beam epitaxy on a-plane ZnO substrates. A smooth surface morphology was accomplished under oxygen-rich growth conditions. The benefits of the use of ZnO substrates on the structural properties are reflected by a low-density of threading dislocations. Furthermore, no indications for the generation of basal plane stacking faults are found. The pseudomorphic growth on a-plane ZnO substrates efficiently locks the epitaxial Zn{sub 1-x}Mg{sub x}O films to the wurtzite structure up to x = 0.25. The Mg concentration is not constant and increases with larger thickness. The optical properties reflect the influence of alloy disorder.

Laumer, Bernhard [Walter Schottky Institut and Physics Department, Technische Universitaet Muenchen, Am Coulombwall 4, 85748 Garching (Germany); I. Physikalisches Institut, Justus-Liebig-Universitaet Giessen, Heinrich-Buff-Ring 16, 35392 Giessen (Germany); Schuster, Fabian; Stutzmann, Martin [Walter Schottky Institut and Physics Department, Technische Universitaet Muenchen, Am Coulombwall 4, 85748 Garching (Germany); Bergmaier, Andreas; Dollinger, Guenther [Universitaet der Bundeswehr Muenchen, Fakultaet fuer Luft- und Raumfahrttechnik, Werner-Heisenberg-Weg 39, 85577 Neubiberg (Germany); Vogel, Stephen; Gries, Katharina I.; Volz, Kerstin [Philipps-Universitaet, Material Sciences Center-Structure and Technology Research Laboratory and Faculty of Physics, Hans-Meerwein-Strasse, 35032 Marburg (Germany); Eickhoff, Martin [I. Physikalisches Institut, Justus-Liebig-Universitaet Giessen, Heinrich-Buff-Ring 16, 35392 Giessen (Germany)

2012-09-17T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Deep levels in a-plane, high Mg-content Mg{sub x}Zn{sub 1-x}O epitaxial layers grown by molecular beam epitaxy  

Science Conference Proceedings (OSTI)

Deep level defects in n-type unintentionally doped a-plane Mg{sub x}Zn{sub 1-x}O, grown by molecular beam epitaxy on r-plane sapphire were fully characterized using deep level optical spectroscopy (DLOS) and related methods. Four compositions of Mg{sub x}Zn{sub 1-x}O were examined with x = 0.31, 0.44, 0.52, and 0.56 together with a control ZnO sample. DLOS measurements revealed the presence of five deep levels in each Mg-containing sample, having energy levels of E{sub c} - 1.4 eV, 2.1 eV, 2.6 V, and E{sub v} + 0.3 eV and 0.6 eV. For all Mg compositions, the activation energies of the first three states were constant with respect to the conduction band edge, whereas the latter two revealed constant activation energies with respect to the valence band edge. In contrast to the ternary materials, only three levels, at E{sub c} - 2.1 eV, E{sub v} + 0.3 eV, and 0.6 eV, were observed for the ZnO control sample in this systematically grown series of samples. Substantially higher concentrations of the deep levels at E{sub v} + 0.3 eV and E{sub c} - 2.1 eV were observed in ZnO compared to the Mg alloyed samples. Moreover, there is a general invariance of trap concentration of the E{sub v} + 0.3 eV and 0.6 eV levels on Mg content, while at least and order of magnitude dependency of the E{sub c} - 1.4 eV and E{sub c} - 2.6 eV levels in Mg alloyed samples.

Guer, Emre [Department of Physics, Faculty of Science, Atatuerk University, Erzurum 25240 (Turkey); 205 Dreese Laboratory, Department of Electrical and Computer Engineering, The Ohio State University, 2015 Neil Avenue, Columbus, Ohio 43210-1272 (United States); Tabares, G.; Hierro, A. [Dpto. Ingenieria Electronica and ISOM, Universidad Politecnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid (Spain); Arehart, A.; Ringel, S. A. [205 Dreese Laboratory, Department of Electrical and Computer Engineering, Ohio State University, 2015 Neil Avenue, Columbus, Ohio 43210-1272 (United States); Chauveau, J. M. [CRHEA-CNRS, 06560 Valbonne (France); University of Nice Sophia Antipolis, ParcValrose, 06102 Nice Cedex 2 (France)

2012-12-15T23:59:59.000Z

282

Bit plane encoding and encryption  

Science Conference Proceedings (OSTI)

The rapid growth in multimedia based Internet systems and applications like video telephony, video on demand and also telemedicine has created a great need for multimedia security. One of the important requirements for multimedia security is encryption. ...

Anil Yekkala; C. E. Veni Madhavan

2007-12-01T23:59:59.000Z

283

The Bolocam Galactic Plane Survey -- III. Characterizing Physical Properties of Massive Star-Forming Regions in the Gemini OB1 Molecular Cloud  

E-Print Network (OSTI)

We present the 1.1 millimeter Bolocam Galactic Plane Survey (BGPS) observations of the Gemini OB1 molecular cloud complex, and targeted ammonia observations of the BGPS sources. When paired with molecular spectroscopy of a dense gas tracer, millimeter observations yield physical properties such as masses, radii, mean densities, kinetic temperatures and line widths. We detect 34 distinct BGPS sources above 5-sigma=0.37 Jy/beam with corresponding 5-sigma detections in the ammonia (1,1) transition. Eight of the objects show water maser emission (20%). We find a mean millimeter source FWHM of 1.12 pc, and a mean kinetic temperature of 20 K for the sample of 34 BGPS sources. The observed ammonia line widths are dominated by non-thermal motions, typically found to be a few times the thermal sound speed expected for the derived kinetic temperature. We calculate the mass for each source from the millimeter flux assuming the sources are isothermal and find a mean isothermal mass within a 120" aperture of 230 +/- 180 s...

Dunham, Miranda K; Evans, Neal J; Cyganowski, Claudia J; Aguirre, James; Bally, John; Battersby, Cara; Bradley, Eric Todd; Dowell, Darren; Drosback, Meredith; Ginsburg, Adam; Glenn, Jason; Harvey, Paul; Merello, Manuel; Schlingman, Wayne; Shirley, Yancy L; Stringfellow, Guy S; Walawender, Josh; Williams, Jonathan P

2010-01-01T23:59:59.000Z

284

TransForum v31n1 - Rail Lubricant  

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

RAIL LUBRICANT TECHNOLOGY GOES HIGH TECH "I ... have invented a new and useful improvement on locomotive-engines used on railroads and common roads by which inclined planes and...

285

THE BOLOCAM GALACTIC PLANE SURVEY. III. CHARACTERIZING PHYSICAL PROPERTIES OF MASSIVE STAR-FORMING REGIONS IN THE GEMINI OB1 MOLECULAR CLOUD  

SciTech Connect

We present the 1.1 mm Bolocam Galactic Plane Survey (BGPS) observations of the Gemini OB1 molecular cloud complex, and targeted NH{sub 3} observations of the BGPS sources. When paired with molecular spectroscopy of a dense gas tracer, millimeter observations yield physical properties such as masses, radii, mean densities, kinetic temperatures, and line widths. We detect 34 distinct BGPS sources above 5{sigma} = 0.37 Jy beam{sup -1} with corresponding 5{sigma} detections in the NH{sub 3}(1,1) transition. Eight of the objects show water maser emission (20%). We find a mean millimeter source FWHM of 1.12 pc and a mean gas kinetic temperature of 20 K for the sample of 34 BGPS sources with detections in the NH{sub 3}(1,1) line. The observed NH{sub 3} line widths are dominated by non-thermal motions, typically found to be a few times the thermal sound speed expected for the derived kinetic temperature. We calculate the mass for each source from the millimeter flux assuming the sources are isothermal and find a mean isothermal mass within a 120'' aperture of 230 {+-} 180 M{sub sun}. We find a total mass of 8400 M{sub sun} for all BGPS sources in the Gemini OB1 molecular cloud, representing 6.5% of the cloud mass. By comparing the millimeter isothermal mass to the virial mass calculated from the NH{sub 3} line widths within a radius equal to the millimeter source size, we find a mean virial parameter (M{sub vir}/M {sub iso}) of 1.0 {+-} 0.9 for the sample. We find mean values for the distributions of column densities of 1.0 x 10{sup 22} cm{sup -2} for H{sub 2}, and 3.0 x 10{sup 14} cm{sup -2} for NH{sub 3}, giving a mean NH{sub 3} abundance of 3.0 x 10{sup -8} relative to H{sub 2}. We find volume-averaged densities on the order of 10{sup 3}-10{sup 4} cm{sup -3}. The sizes and densities suggest that in the Gem OB1 region the BGPS is detecting the clumps from which stellar clusters form, rather than smaller, higher density cores where single stars or small multiple systems form.

Dunham, Miranda K.; Evans, Neal J.; Harvey, Paul; Merello, Manuel [Department of Astronomy, The University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States); Rosolowsky, Erik [University of British Columbia, Okanagan, 3333 University Way, Kelowna BC V1V 1V7 (Canada); Cyganowski, Claudia J. [Department of Astronomy, University of Wisconsin, Madison, WI 53706 (United States); Aguirre, James [Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104 (United States); Bally, John; Battersby, Cara; Ginsburg, Adam; Glenn, Jason; Stringfellow, Guy S. [CASA, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Bradley, Eric Todd [Department of Physics, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL 32816-2385 (United States); Dowell, Darren [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91104 (United States); Drosback, Meredith [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Schlingman, Wayne; Shirley, Yancy L. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Walawender, Josh [Institute for Astronomy, University of Hawaii, 640 N. Aohoku Place, Hilo, HI 96720 (United States); Williams, Jonathan P., E-mail: nordhaus@astro.as.utexas.ed [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)

2010-07-10T23:59:59.000Z

286

FROM THE COLOR-MAGNITUDE DIAGRAM OF {omega} CENTAURI AND (SUPER-)ASYMPTOTIC GIANT BRANCH STELLAR MODELS TO A GALACTIC PLANE PASSAGE GAS PURGING CHEMICAL EVOLUTION SCENARIO  

Science Conference Proceedings (OSTI)

We have investigated the color-magnitude diagram of {omega} Centauri and find that the blue main sequence (bMS) can be reproduced only by models that have a helium abundance in the range Y = 0.35-0.40. To explain the faint subgiant branch of the reddest stars ('MS-a/RG-a' sequence), isochrones for the observed metallicity ([Fe/H] Almost-Equal-To -0.7) appear to require both a high age ({approx}13 Gyr) and enhanced CNO abundances ([CNO/Fe] Almost-Equal-To 0.9). Y Almost-Equal-To 0.35 must also be assumed in order to counteract the effects of high CNO on turnoff colors and thereby to obtain a good fit to the relatively blue turnoff of this stellar population. This suggests a short chemical evolution period of time (=} 6.8 M{sub Sun }, M{sub He,core} {>=} 1.245 M{sub Sun }) predict too large N enhancements, which limit their role in contributing to the extreme populations. In order to address the observed central concentration of stars with He-rich abundance, we show here quantitatively that highly He- and N-enriched AGB ejecta have particularly efficient cooling properties. Based on these results and on the reconstruction of the orbit of {omega} Cen with respect to the Milky Way, we propose the Galactic plane passage gas purging scenario for the chemical evolution of this cluster. The bMS population formed shortly after the purging of most of the cluster gas as a result of the passage of {omega} Cen through the Galactic disk (which occurs today every {approx}40 Myr for {omega} Cen) when the initial mass function of the dominant population had 'burned' through most of the Type II supernova mass range. AGB stars would eject most of their masses into the gas-depleted cluster through low-velocity winds that sink to the cluster core due to their favorable cooling properties and form the bMS population. In our discussion we follow our model through four passage events, which could explain some key properties not only of the bMS but also of the MS-a/RGB-a and the s-enriched stars.

Herwig, Falk; VandenBerg, Don A.; Navarro, Julio F. [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Victoria, BC V8W 3P6 (Canada); Ferguson, Jason [Department of Physics, Wichita State University Wichita, KS 67260 (United States); Paxton, Bill, E-mail: fherwig@uvic.ca, E-mail: vandenbe@uvic.ca, E-mail: jason.ferguson@wichita.edu, E-mail: paxton@kitp.ucsb.edu [KITP/UC Santa Barbara, Santa Barbara, CA 93106 (United States)

2012-10-01T23:59:59.000Z

287

Out-of-plane negative magnetoresistance of Bi{sub 2}Sr{sub 1.6}La{sub 0.4}CuO{sub 6+{delta}} single crystals in the underdoped region  

Science Conference Proceedings (OSTI)

In order to investigate a relationship between the carrier concentration and negative magnetoresistance in the underdoped region, they have performed out-of-plane electrical resistivity measurements for underdoped Bi{sub 2}Sr{sub 1.6}La{sub 0.4}CuO{sub 6+{delta}} single crystals. Giant negative magnetoresistance has been observed in the most abundant carrier sample with {delta} = 0.12 in the experiment. The negative magnetoresistance reduces with decreasing carrier concentration.

Akazawa, Teruhiko; Ikeda, Hiroshi; Ozawa, Norihiko; Kouno, Hideki; Yoshizaki, Ryozo

1999-12-01T23:59:59.000Z

288

Optical properties of a-plane (Al, Ga)N/GaN multiple quantum wells grown on strain engineered Zn{sub 1-x}Mg{sub x}O layers by molecular beam epitaxy  

Science Conference Proceedings (OSTI)

Nonpolar (1120) Al{sub 0.2}Ga{sub 0.8}N/GaN multiple quantum wells (MQWs) have been grown by molecular beam epitaxy on (1120) Zn{sub 0.74}Mg{sub 0.26}O templates on r-plane sapphire substrates. The quantum wells exhibit well-resolved photoluminescence peaks in the ultra-violet region, and no sign of quantum confined Stark effect is observed in the complete multiple quantum well series. The results agree well with flat band quantum well calculations. Furthermore, we show that the MQW structures are strongly polarized along the [0001] direction. The origin of the polarization is discussed in terms of the strain anisotropy dependence of the exciton optical oscillator strengths.

Xia, Y.; Vinter, B.; Chauveau, J.-M. [CRHEA-CNRS, Rue Bernard Gregory, 06560 Valbonne (France); University of Nice Sophia-Antipolis, 06103 Nice (France); Brault, J.; Nemoz, M.; Teisseire, M.; Leroux, M. [CRHEA-CNRS, Rue Bernard Gregory, 06560 Valbonne (France)

2011-12-26T23:59:59.000Z

289

Enhancement of spin-asymmetry by L2{sub 1}-ordering in Co{sub 2}MnSi/Cr/Co{sub 2}MnSi current-perpendicular-to-plane magnetoresistance devices  

SciTech Connect

Co{sub 2}MnSi/Cr/Co{sub 2}MnSi (001)-fully epitaxial current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) devices were fabricated via an UHV magnetron sputtering system. The relationship between the degree of chemical ordering in Co{sub 2}MnSi (CMS) and the CPP-GMR characteristics was investigated systematically against the annealing temperature of the devices. X-ray diffraction profiles and reflection high-energy electron diffraction images indicated that annealing improved L2{sub 1}-ordering. The MR ratio also increased upon annealing and the maximum MR ratio of 5.2% and {delta}RA of 6.5 m{omega} {mu}m{sup 2} were achieved by annealing at 400 deg. C. These results indicate that promoting the degree of L2{sub 1}-ordering in CMS enhances the bulk and/or interface spin-asymmetry coefficients.

Sakuraba, Y.; Iwase, T.; Saito, K.; Mitani, S.; Takanashi, K. [Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan)

2009-01-05T23:59:59.000Z

290

Segmented rail linear induction motor - Energy Innovation Portal  

A segmented rail linear induction motor has a segmented rail consisting of a plurality of nonferrous electrically conductive segments aligned along a guideway. The ...

291

Table of Contents Undergraduate Information .................................................................................................................................................................................................. 5  

E-Print Network (OSTI)

................................................................................................................................................................................................. 73 Oak Ridge Associated Universities, which uses automated, electric-powered cars that operate on a concrete-and-steel guideway. The PRT ........................................................................................................................................................................ 589 Computer Science & Electrical Engineering

Mohaghegh, Shahab

292

Cutting Plane Methods and Subgradient Methods  

E-Print Network (OSTI)

Basescu and Mitchell [11] generalized the algorithms in [76, 77, 110, 111] by ... Mitchell and Basescu [95] removed this condition number by allowing the ...

293

Implementing cutting plane management and selection techniques  

E-Print Network (OSTI)

Closely related to cut generation is the problem of reducing the number of ... They concentrate on generating cuts which ...... Programming, pages 1–24, 2012. 5.

294

Directional Reactive Power Ground Plane Transmission - Energy ...  

ORNL researchers have developed a pioneering power ... out-of-phase with respect to time. This phenomenon allows electrical transmission on a single ...

295

Agent organization in the knowledge plane  

E-Print Network (OSTI)

In designing and building a network like the Internet, we continue to face the problems of scale and distribution. With the dramatic expansion in scale and heterogeneity of the Internet, network management has become an ...

Li, Ji, 1975-

2008-01-01T23:59:59.000Z

296

Agent Organization in the Knowledge Plane  

E-Print Network (OSTI)

In designing and building a network like the Internet, we continue to face the problems of scale and distribution. With the dramatic expansion in scale and heterogeneity of the Internet, network management has become an ...

Li, Ji

2008-06-11T23:59:59.000Z

297

Transient plane source measurements of the thermal ...  

Science Conference Proceedings (OSTI)

... conductivity of (2.1–2.2) W/(m K). While the HS bounds are fairly tight in Fig. ... Res 33:363–371 8. Xu Y, Chung DDL (2000) Effect of sand addition on ...

2007-11-14T23:59:59.000Z

298

Out-of-plane ultrasonic velocity measurement  

DOE Patents (OSTI)

A method for improving the accuracy of measuring the velocity and time of flight of ultrasonic signals through moving web-like materials such as paper, paperboard and the like, includes a pair of ultrasonic transducers disposed on opposing sides of a moving web-like material. In order to provide acoustical coupling between the transducers and the web-like material, the transducers are disposed in fluid-filled wheels. Errors due to variances in the wheel thicknesses about their circumference which can affect time of flight measurements and ultimately the mechanical property being tested are compensated by averaging the ultrasonic signals for a predetermined number of revolutions. The invention further includes a method for compensating for errors resulting from the digitization of the ultrasonic signals. More particularly, the invention includes a method for eliminating errors known as trigger jitter inherent with digitizing oscilloscopes used to digitize the signals for manipulation by a digital computer. In particular, rather than cross-correlate ultrasonic signals taken during different sample periods as is known in the art in order to determine the time of flight of the ultrasonic signal through the moving web, a pulse echo box is provided to enable cross-correlation of predetermined transmitted ultrasonic signals with predetermined reflected ultrasonic or echo signals during the sample period. By cross-correlating ultrasonic signals in the same sample period, the error associated with trigger jitter is eliminated.

Hall, Maclin S. (Marietta, GA); Brodeur, Pierre H. (Smyrna, GA); Jackson, Theodore G. (Atlanta, GA)

1998-01-01T23:59:59.000Z

299

Out-of-plane ultrasonic velocity measurement  

DOE Patents (OSTI)

A method for improving the accuracy of measuring the velocity and time of flight of ultrasonic signals through moving web-like materials such as paper, paperboard and the like, includes a pair of ultrasonic transducers disposed on opposing sides of a moving web-like material. In order to provide acoustical coupling between the transducers and the web-like material, the transducers are disposed in fluid-filled wheels. Errors due to variances in the wheel thicknesses about their circumference which can affect time of flight measurements and ultimately the mechanical property being tested are compensated by averaging the ultrasonic signals for a predetermined number of revolutions. The invention further includes a method for compensating for errors resulting from the digitization of the ultrasonic signals. More particularly, the invention includes a method for eliminating errors known as trigger jitter inherent with digitizing oscilloscopes used to digitize the signals for manipulation by a digital computer. In particular, rather than cross-correlate ultrasonic signals taken during different sample periods as is known in the art in order to determine the time of flight of the ultrasonic signal through the moving web, a pulse echo box is provided to enable cross-correlation of predetermined transmitted ultrasonic signals with predetermined reflected ultrasonic or echo signals during the sample period. By cross-correlating ultrasonic signals in the same sample period, the error associated with trigger jitter is eliminated. 20 figs.

Hall, M.S.; Brodeur, P.H.; Jackson, T.G.

1998-07-14T23:59:59.000Z

300

Implementing cutting plane management and selection techniques  

E-Print Network (OSTI)

Dec 21, 2012 ... Citation: Technical Report, University of Paderborn, Warburger Str. 100, 33098 Paderborn, Germany, 12/2012. Download: [PDF].

Note: This page contains sample records for the topic "guideways inclined plane" 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

Ground Plane Identification Using LIDAR in Forested  

E-Print Network (OSTI)

To operate autonomously in forested environments, unmanned ground vehicles (UGVs) must be able to identify the load-bearing surface of the terrain (i.e. the ground). This paper presents a novel two-stage approach for ...

McDaniel, Matt W.

302

Information extraction from noisy televiewer logs of inclined holes in hard rock  

DOE Green Energy (OSTI)

A feature-extraction method was adapted from satellite image-processing to the problem of extracting information from extremely noisy and narrow-range televiewer imagery from GT-2 at Fenton Hill. From televiewer logs, 733 structures were recovered, compared with 42 from core. The average spacings were 3.13 and 0.55 feet, respectively, indicating that the televiewer yielded only 17.5% of the information available from core. Two televiewer runs overlapped between 4000 and 4275 feet depth, but no detectable structures were repeated on both runs. The lack of repetition was explained as due to random processes arising from thermally-induced electronic noise and manually-operated narrow-range recording. Two new coefficients of association were defined, termed ''coplanarity'' P, and ''collinearity'', L, respectively. The coplanarity of foliations demonstrated that, despite no repetition of individuals, the two runs could be correlated. The coplanarity averaged 60 degrees, falling to 43.5 degrees at match, at a lag of -4.5 feet. There was no systematic maximum in the coplanarity for fractures, indicating that these were not serially-correlated. A periodicity in the collinearity for foliations indicated a set of folds with wavelength of 80 feet. 8 refs., 10 figs.

Burns, K.L.

1985-01-01T23:59:59.000Z

303

Comparison of void fraction correlations for different flow patterns in horizontal and upward inclined pipes  

E-Print Network (OSTI)

of the nanotube material itself. From conductivity measurements of individual tubes and bundles, Skakalova36. Electrical conductivity of individual bundles of metallic carbon nano- tubes reaches the value of 104 S/cm,2 thresholds of con- ductivity, the plateau conductivities, and the lengths and diameters of tube bundles

Ghajar, Afshin J.

304

Rocking and rolling down an incline : the dynamics of nested cylinders on a ramp  

E-Print Network (OSTI)

In this thesis, I report the results of a combined experimental and theoretical investigation of a journal bearing, specifically, a cylinder suspended in a viscous fluid housed within a cylindrical shell, rolling down an ...

Vener, David Paul

2006-01-01T23:59:59.000Z

305

Directed flow of charged particles at mid-rapidity relative to the spectator plane in Pb-Pb collisions at sqrt{s_NN}=2.76 TeV  

E-Print Network (OSTI)

The directed flow of charged particles at mid-rapidity is measured in Pb-Pb collisions at sqrt{s_NN}=2.76 TeV relative to the collision plane defined by the spectator nucleons. Both, the rapidity odd (v_1^odd) and even (v_1^even) directed flow components are reported. The v_1^odd component has a negative slope as a function of pseudorapidity similar to that observed at the highest RHIC energy, but with about a three times smaller magnitude. The v^even component is found to be non-zero and independent of pseudorapidity. Both components show little dependence on the collision centrality and change sign at transverse momenta around 1.2-1.7 GeV/c for midcentral collisions. The shape of v_1^even as a function of transverse momentum and a vanishing transverse momentum shift along the spectator deflection for v_1^even are consistent with dipole-like initial density fluctuations in the overlap zone of the nuclei.

ALICE Collaboration

2013-06-18T23:59:59.000Z

306

DEFORMATION BEHAVIOR OF A 70/30 ALPHA BRASS IN PLANE STRESS/PLANE STRAIN  

E-Print Network (OSTI)

Generally a simple power law ~ = K E " (where K and n are empirical constants called the strength coefficient and the work hardening coefficient respectively) is used to describe plastic stress-strain dependence of deformable metals (1,2). This equation was employed by Low (3) to describe the uniaxial tensile behavior of an annealed 70/30 brass. The slope of the corresponding double logarithmic true stress-true strain plot gives a single value of n. However, this fit is not always adequate.

P. A. Sundaram; D. Rodriguez; S. Santiago

1993-01-01T23:59:59.000Z

307

Method for fabrication of high temperature superconductors  

DOE Patents (OSTI)

A layered article of manufacture and a method of manufacturing same is disclosed. A substrate has a biaxially textured MgO crystalline layer having the c-axes thereof inclined with respect to the plane of the substrate deposited thereon. A layer of one or more of YSZ or Y.sub.2O.sub.3 and then a layer of CeO.sub.2 is deposited on the MgO. A crystalline superconductor layer with the c-axes thereof normal to the plane of the substrate is deposited on the CeO.sub.2 layer. Deposition of the MgO layer on the substrate is by the inclined substrate deposition method developed at Argonne National Laboratory. Preferably, the MgO has the c-axes thereof inclined with respect to the normal to the substrate in the range of from about 10.degree. to about 40.degree. and YBCO superconductors are used.

Balachandran, Uthamalingam (Hinsdale, IL); Ma, Beihai (Naperville, IL); Miller, Dean (Darien, IL)

2009-07-14T23:59:59.000Z

308

Large hazardous floods as translatory waves  

Science Conference Proceedings (OSTI)

The theory for non-stationary flow in translatory waves is developed for an inclined plane in a prismatic channel and a funneling channel. The existence of translatory waves traveling over dry land or superimposed on constant flow is established, and ... Keywords: Flood hazard, Flow simulation, Jokulhlaup, Translatory waves

Jonas Elíasson; Snorri Pall Kjaran; Sigurdur Larus Holm; Magnus Tumi Gudmundsson; Gudrun Larsen

2007-10-01T23:59:59.000Z

309

Numerical and experimental investigation of a supersonic flow field around solid fuel on an inclined flat plate  

Science Conference Proceedings (OSTI)

This research adopts a shock tube 16 meters long and with a 9 cmbore to create a supersonic, high-temperature, and high-pressure flowfield to observe the gasification and ignition of HTPB solid fuel under different environments. Also, full-scale 3D numerical ...

Uzu-Kuei Hsu

2009-01-01T23:59:59.000Z

310

Virtual Measurement in Pipes, Part 1: Flowing Bottom Hole Pressure Under Multi-Phase Flow and Inclined Wellbore Conditions  

E-Print Network (OSTI)

the utmost importance in maximizing the reservoir energy in naturally flowing and artificial lift wells as the number of variables increases. Many parameters could be involved in these types of problems, such as gas information such as oil, gas and water flow rates, temperature, oil and gas gravity, pipe length, surface

Mohaghegh, Shahab

311

Mechanical modeling and transient anti-plane fracture analysis for ...  

Science Conference Proceedings (OSTI)

Mar 13, 2008 ... Armored Force Engineering, No. 21, Du Jia Kan, Chang. Xin Dian, Beijing 100072, P.R. China e-mail: LYDbeijing@163.com. Y.-D. Li · K.Y. Lee ...

312

AN ANALYTIC CENTER CUTTING PLANE METHOD IN CONIC PROGRAMMING  

E-Print Network (OSTI)

government. The decoration was awarded by Romanian President Traian Basescu in recognition of Friling

Mitchell, John E.

313

An analytic center cutting plane approach for conic programming  

E-Print Network (OSTI)

We analyze the problem of finding a point strictly interior to a bounded, fully dimensional set from a finite dimensional Hilbert space. We generalize the results obtained for the LP, SDP and SOCP cases. The cuts added by our algorithm are central and conic. In our analysis, we find an upper bound for the number of Newton steps required to compute an approximate analytic center. Also, we provide an upper bound for the total number of cuts added to solve the problem. This bound depends on the quality of the cuts, the dimensionality of the problem and the thickness of the set we are considering.

Vasile L Basescu; John E Mitchell

2005-01-01T23:59:59.000Z

314

An analytic center cutting plane approach for conic programming  

E-Print Network (OSTI)

Basescu and Mitchell: ACCPM for conic programming u ? 0, u ? IRn ? u1 ?. ? n. ? i=2 u2 i . The induced cone is called the second order cone or the ...

315

A Cutting Plane Algorithm for Large Scale Semidefinite Relaxations  

E-Print Network (OSTI)

Oct 10, 2001 ... pr o gramm i ng , s p ect ral b undle m et h o d , s u b grad ie n t m et h o d ... b y so lv i ng se v e ral larg e sc ale, un st ru ct ur e d 0 -1 li n e ar pr ...

316

SEARCH FOR GAMMA RAY EMISSION FROM GALACTIC PLANE WITH MILAGRO.  

E-Print Network (OSTI)

members of the Milagro collaboration: Gaurang Yodh, Cy Ho#11;man, Don Coyne, David Berley Jordan Goodman detected in the energy range up to 30 GeV by space-based detectors. Above 1 GeV, the observed intensity. Observations at TeV energies, for which the ux is too low for satellite detection, can be done with ground

California at Santa Cruz, University of

317

Steady Wind-Driven Coastal Circulation on a ?-Plane  

Science Conference Proceedings (OSTI)

In tropical regions, and for applications where the alongshore scale k?1 of the forcing is large, the assumption of constant Coriolis parameters f in Csanady's Arrested Topographic Wave (ATW) model is invalid. Here we generalize the ATW model for ...

Jason H. Middleton; Richard E. Thomson

1985-12-01T23:59:59.000Z

318

A cutting plane algorithm for the capacitated facility location problem  

Science Conference Proceedings (OSTI)

The Capacitated Facility Location Problem (CFLP) is to locate a set of facilities with capacity constraints, to satisfy at the minimum cost the order-demands of a set of clients. A multi-source version of the problem is considered ... Keywords: Capacitated facility location problem, Facet-enumeration, Mixed dicut inequalities

Pasquale Avella; Maurizio Boccia

2009-05-01T23:59:59.000Z

319

A COMPUTATIONAL STUDY OF THE CUTTING PLANE TREE ...  

E-Print Network (OSTI)

Sep 14, 2010 ... USA. bychen@email.arizona.edu. Simge Kü?ükyavuz: Department of Integrated Systems Engineering, The Ohio State University, Columbus,.

320

Optimization Online - A Computational Study of the Cutting Plane ...  

E-Print Network (OSTI)

Citation: Research report, Data Driven Decisions Lab, The Ohio State University. Download: Entry Submitted: 09/16/2010. Entry Accepted: 09/16/2010

Note: This page contains sample records for the topic "guideways inclined plane" 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

Full length article: Weighted polynomial inequalities in the complex plane  

Science Conference Proceedings (OSTI)

We establish weighted L"p,1@?pKeywords: Bernstein inequality, Marcinkiewicz inequality, Nikolskii inequality, Polynomial, Quasismooth arc, Remez inequality

Vladimir Andrievskii

2012-09-01T23:59:59.000Z

322

Routing multi-class traffic flows in the plane  

Science Conference Proceedings (OSTI)

We study a class of multi-commodity flow problems in geometric domains: For a given planar domain P populated with obstacles (holes) of K>=2types, compute a set of thick paths from a ''source'' edge of P to a ''sink'' edge of P for vehicles of K distinct ... Keywords: Air traffic management, Approximation algorithms, Geometric maximum flow, Multi-commodity flow, Optimal paths

Joondong Kim; Joseph S. B. Mitchell; Valentin Polishchuk; Shang Yang; Jingyu Zou

2012-04-01T23:59:59.000Z

323

A Chance-Constrained Model & Cutting Planes for Fixed Broadband ...  

E-Print Network (OSTI)

... high-speed data connections by means of microwave radio transmission [2]. ..... By assuming the same availability for radio links using the highest modulation .

324

A Proximal Cutting Plane Method Using Chebychev Center for ...  

E-Print Network (OSTI)

Jun 1, 2006 ... France Télécom, Division R&D, CORE-MCN, 38-40 rue du Général Leclerc, 92794 ... result in a substantial benefit (it has been shown to improve the ...... optimization method”, Computational Management Science, to appear.

325

Functionalization of In-plane Photonic Microcantilever Arrays for  

E-Print Network (OSTI)

-based biosensing are demonstrated with fluorescence microscopy and a corresponding PMCL sensing experiment using ......................................................................... 53 3.2.6 Fluorescent Imaging......................................................................................................... 71 4.3.3 Etched vs. Un-etched Sensor Surfaces

Wirthlin, Michael J.

326

Geostrophic Regimes on a Sphere and a Beta Plane  

Science Conference Proceedings (OSTI)

A general geostrophic equation is derived for a shallow layer of fluid on a sphere. This equation encompasses the planetary, intermediate, and quasi-forms of geostrophy and produces their equations directly when the appropriate parametric ...

Gareth P. Williams

1985-06-01T23:59:59.000Z

327

Recirculation Gyres Forced by a Beta-Plane Jet  

Science Conference Proceedings (OSTI)

A numerical model, with quasigeostrophic and barotropic dynamics, is used to study the forcing of mean flows by an unstable jet. The initially zonal jet has specified shape and transport at the western inflow boundary and is sufficiently intense ...

Steven R. Jayne; Nelson G. Hogg; Paola Malanotte-Rizzoli

1996-04-01T23:59:59.000Z

328

Magnetic Rare Earth Intermetallics with Easy Plane Anisotropy  

Science Conference Proceedings (OSTI)

... demand of the new--generation divices with ever growing working frequency around GHz ... Coupling Magnetism to Electricity in Multiferroic Heterostructures.

329

Multimodal Transportation in California: Connecting Planes, Trains and Automobiles  

E-Print Network (OSTI)

feature of California transportation decision making. ? A Cto expand the capacity of the transportation system,including intercity transportation. If historic trends are

Kanafani, Adib

2008-01-01T23:59:59.000Z

330

Algorithmic and Complexity Results for Cutting Planes Derived from ...  

E-Print Network (OSTI)

Jul 25, 2011 ... The integer programming community has recently focused on developing a ...... We will now show the relation between the ratio condition.

331

Wiggler plane focusing in a linear free electron laser  

DOE Patents (OSTI)

Free electron laser apparatus that provides a magnetic centering force to turn or focus a non-axial electron toward the longitudinal axis as desired. The focusing effect is provided by wiggler magnet pole faces that are approximately parabolically shaped.

Scharlemann, Ernst T. (Livermore, CA)

1988-01-01T23:59:59.000Z

332

B-spline finite elements for plane elasticity problems.  

E-Print Network (OSTI)

??The finite element method since its development in the 1950âÂ?Â?s has been used extensively in solving complex problems involving partial differential equations. The conventional finite… (more)

Aggarwal, Bhavya

2007-01-01T23:59:59.000Z

333

1 Overview of out of plane MEMS assembly techniques  

E-Print Network (OSTI)

Abstract — This paper deals with a synthesis of the activities of the French FEMTO-ST institute in the field of robotic microassembly. It deals with the tridimensional assembly of objects whose typical size is from 10 microns to 400 microns. We are especially focusing on the automation of micro-assembly based on several principles. Closed loop control based on microvision has been studied and applied on the fully automatic assembly of several 400 microns objects. Force control has been also analyzed and is proposed for optical Microsystems assembly. At least, open loop trajectories of 40 microns objects with a throughput of 1800 unit per hour have been achieved. Scientific and technological aspects and industrial relevance will be presented. I.

M. Gauthier; C. Clévy; S. Dembelé; B. Tamadazte; K. Rabenorosoa; N. Piat; P. Lutz

2013-01-01T23:59:59.000Z

334

Collisions of Four Point Vortices in the Plane  

E-Print Network (OSTI)

This paper addresses the question of existence of (not necessarily self-similar) solutions to the 4-vortex problem that lead to total or partial collision. We begin by showing that energy considerations alone imply that, for the general $N$-vortex problem, the virial being zero is a necessary condition for a solution to both evolve towards total collision and satisfy certain regularity condition. For evolutions assumed to be bounded, a classification for asymptotic partial collision configurations is offered. This classification depends on inertia and vorticity considerations. For non-necessarily bounded evolutions, we discuss the relationship between partial and (non-regular) total collisions when the virial is not zero and a generic condition on the vorticities holds. Finally, we give a canonical transformation that, for a class of 4-vortex systems satisfying a restriction on the vorticities, allows to formally apply the averaging principle in order reduce the dynamics when two of the vorticities are near a binary collision. The reduced system is a one-degree of freedom hamiltonian system.

Antonio Hernández-Garduño; Ernesto A. Lacomba

2006-09-07T23:59:59.000Z

335

Properties of a Cutting Plane Method for Semidefinite Programming1  

E-Print Network (OSTI)

Jul 11, 2012 ... on Ising spin glass MaxCut problems with 10000 vertices, taken from [20]. We use .... A parallel interior point decomposition algorithm for block.

336

A Collisional Family in the Classical Kuiper Belt  

E-Print Network (OSTI)

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

E. I. Chiang

2002-05-16T23:59:59.000Z

337

High speed maglev design  

DOE Patents (OSTI)

A propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes dividing the superconducting magnets into two types: a strong field magnet which is located vertically below the vehicle for propulsion and guidance and a weak field superconducting magnet located at the ends of the vehicle for levitation and added guidance. Several proposed embodiments exist for the placement of the magnetic field shielding: locating the shielding on the vehicle, locating the shielding on the guideway, and locating the shielding on the guideway and adding shielding to the vertical undercarriage. In addition, the separation between the vehicle and the guideway can be controlled to reduce the exposure of the passenger cabin to magnetic fields. 4 figures.

Rote, D.M.; Jianliang He; Coffey, H.

1993-10-19T23:59:59.000Z

338

Improved high speed maglev design  

DOE Patents (OSTI)

This report discusses a propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes dividing the superconducting magnets into two types: a strong field magnet which is located vertically below the vehicle for propulsion and guidance and a weak field superconducting magnet located at the ends of the vehicle for levitation and added guidance. Several proposed embodiments exist for the placement of the magnetic field shielding: locating the shielding on the vehicle, locating the shielding on the guideway, and locating the shielding on the guideway and adding shielding to the vertical undercarriage. In addition, the separation between the be vehicle and the guideway can be controlled to reduce the exposure of the passenger cabin to magnetic fields.

Rote, D.M.; He, Jianliang; Coffey, H.T.

1992-01-01T23:59:59.000Z

339

Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor  

DOE Patents (OSTI)

A propulsion and suspension system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes propulsion windings which form a linear synchronous motor and conductive guideways, adjacent to the propulsion windings, where both combine to partially encircling the vehicle-borne superconducting magnets. A three phase power source is used with the linear synchronous motor to produce a traveling magnetic wave which in conjunction with the magnets propel the vehicle. The conductive guideway combines with the superconducting magnets to provide for vehicle leviation.

Coffey, Howard T. (Darien, IL)

1993-01-01T23:59:59.000Z

340

Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor  

DOE Patents (OSTI)

A propulsion and suspension system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes propulsion windings which form a linear synchronous motor and conductive guideways, adjacent to the propulsion windings, where both combine to partially encircling the vehicle-borne superconducting magnets. A three phase power source is used with the linear synchronous motor to produce a traveling magnetic wave which in conjunction with the magnets propel the vehicle. The conductive guideway combines with the superconducting magnets to provide for vehicle levitation. 3 figures.

Coffey, H.T.

1993-10-19T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Magnetic levitation configuration incorporating levitation, guidance and linear synchronous motor  

DOE Patents (OSTI)

A propulsion and suspension system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes propulsion windings which form a linear synchronous motor and conductive guideways, adjacent to the propulsion windings, where both combine to partially encircling the vehicle-borne superconducting magnets. A three phase power source is used with the linear synchronous motor to produce a traveling magnetic wave which in conjunction with the magnets propel the vehicle. The conductive guideway combines with the superconducting magnets to provide for vehicle leviation.

Coffey, H.T.

1992-12-31T23:59:59.000Z

342

A Guidebook for Low-Carbon Development at the Local Level  

E-Print Network (OSTI)

inclining block rates) for residential electricity use DSM,inclining block rates) for residential electricity use DSM,

Zhou, Nan

2012-01-01T23:59:59.000Z

343

Plug repairs of marine glass fiber / vinyl ester laminates subjected to in-plane shear stress or in-plane bending moment  

E-Print Network (OSTI)

Glass fiber / vinyl ester composite laminates represent an important class of modem fiber composites being proposed or used in state-of-the-art shipbuilding. This thesis examined the effectiveness of chopped strand mat ...

Urrutia Valenzuela, Roberto

2010-01-01T23:59:59.000Z

344

Multiple wavelength x-ray monochromators  

DOE Patents (OSTI)

An apparatus and method is provided for separating input x-ray radiation containing first and second x-ray wavelengths into spatially separate first and second output radiation which contain the first and second x-ray wavelengths, respectively. The apparatus includes a crystalline diffractor which includes a first set of parallel crystal planes, where each of the planes is spaced a predetermined second distance from one another. The crystalline diffractor also includes a second set of parallel crystal planes inclined at an angle with respect to the first set of crystal planes where each of the planes of the second set of parallel crystal planes is spaced a predetermined second distance from one another. In one embodiment, the crystalline diffractor is comprised of a single crystal. In a second embodiment, the crystalline diffractor is comprised of a stack of two crystals. In a third embodiment, the crystalline diffractor includes a single crystal that is bent for focussing the separate first and second output x-ray radiation wavelengths into separate focal points.

Steinmeyer, P.A.

1991-01-01T23:59:59.000Z

345

Multiple wavelength x-ray monochromators  

DOE Patents (OSTI)

An apparatus and method is provided for separating input x-ray radiation containing first and second x-ray wavelengths into spatially separate first and second output radiation which contain the first and second x-ray wavelengths, respectively. The apparatus includes a crystalline diffractor which includes a first set of parallel crystal planes, where each of the planes is spaced a predetermined second distance from one another. The crystalline diffractor also includes a second set of parallel crystal planes inclined at an angle with respect to the first set of crystal planes where each of the planes of the second set of parallel crystal planes is spaced a predetermined second distance from one another. In one embodiment, the crystalline diffractor is comprised of a single crystal. In a second embodiment, the crystalline diffractor is comprised of a stack of two crystals. In a third embodiment, the crystalline diffractor includes a single crystal that is bent for focussing the separate first and second output x-ray radiation wavelengths into separate focal points.

Steinmeyer, P.A.

1991-12-31T23:59:59.000Z

346

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

SciTech Connect

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

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

2011-02-01T23:59:59.000Z

347

Method and apparatus for distilling oil shale  

SciTech Connect

In an oil shale retrort there is the combination of a plurality of interconnected hollow sections, each having a flat bottom, the bottom surfaces of the sections lying in different planes and being inclined at an angle greater than the angle of repose for powdered oil shale whereby oil shale will flow by the action of gravity alone. Means are located at the juncture of each of the sections for abruptly changing the direction of flow of the shale whereby the velocity is reduced.

White, C.O.

1929-02-26T23:59:59.000Z

348

Determination of masses and other properties of extra-solar planetary systems with more than one planet  

E-Print Network (OSTI)

Recent analysis of the Doppler shift oscillations of the light from extra-solar planetary systems indicate that some of these systems have more than one large planet. In this case it has been shown that the masses of these planets can be determined without the familiar ambiguity due to the unknown inclination angle of the plane of the orbit of the central star provided, however, that its mass is known. A method is presented here which determines also a lower limit to the mass of this star from these observations. As an illustration, our method is applied to the Keck and Lick data for GJ876.

Michael Nauenberg

2001-12-05T23:59:59.000Z

349

Determination of masses and other properties of extra-solar planetary systems with more than one planet  

E-Print Network (OSTI)

Recent analysis of the Doppler shift oscillations of the light from extra-solar planetary systems indicate that some of these systems have more than one large planet. In this case it has been shown that the masses of these planets can be determined without the familiar ambiguity due to the unknown inclination angle of the plane of the orbit of the central star provided, however, that its mass is known. A method is presented here which determines also a lower limit to the mass of this star from these observations. As an illustration, our method is applied to the Keck and Lick data for GJ876.

Nauenberg, M

2002-01-01T23:59:59.000Z

350

University of Minnesota CTS Research Conference Stephanie Eiler  

E-Print Network (OSTI)

;Characteristics ·! Train sets vs. locomotives and cars, and bi-directional ·! Infrastructure compatible - special technology - magnetic forces lift, propel, and guide vehicle over a guideway ­! State-of-the-art electric: approximately 400 units ·! Technology: Electric powered trains; steel wheel on steel

Minnesota, University of

351

Performance analysis of the combined EDS maglev propulsion, levitation, and guidance system  

DOE Green Energy (OSTI)

An analysis of the Japanese maglev system which uses only one set of coils in the guideway for combined levitation, propulsion, and guidance functions is presented in this paper. This preliminary study, using the dynamic circuit approach, indicates that the system is very promising.

He, J.L.; Coffey, H.T.; Rote, D.M.

1993-10-01T23:59:59.000Z

352

Propulsion and stabilization system for magnetically levitated vehicles  

DOE Patents (OSTI)

A propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and stabilized by a system which includes propulsion windings mounted above and parallel to vehicle-borne suspension magnets. A linear synchronous motor is part of the vehicle guideway and is mounted above and parallel to superconducting magnets attached to the magnetically levitated vehicle.

Coffey, Howard T. (Darien, IL)

1993-06-29T23:59:59.000Z

353

West Virginia University 1 2012-2014 Graduate Catalog  

E-Print Network (OSTI)

-and- steel guideway. The PRT permits quick and easy access to major locations within the University Department of Computer Science and Electrical Engineering · Industrial and Management Systems Engineering and working partnerships with industry, government, and public schools, the University plays an important role

Mohaghegh, Shahab

354

West Virginia University 1 2012-2013 Undergraduate Catalog  

E-Print Network (OSTI)

-and- steel guideway. The PRT permits quick and easy access to major locations within the University Department of Computer Science and Electrical Engineering · Industrial and Management Systems Engineering and working partnerships with industry, government, and public schools, the University plays an important role

Mohaghegh, Shahab

355

Propulsion and stabilization system for magnetically levitated vehicles  

DOE Patents (OSTI)

A propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and stabilized by a system which includes propulsion windings mounted above and parallel to vehicle-borne suspension magnets. A linear synchronous motor is part of the vehicle guideway and is mounted above and parallel to superconducting magnets attached to the magnetically levitated vehicle.

Coffey, H.T.

1992-12-31T23:59:59.000Z

356

A Sense of Place: Toward a Location-aware Information Plane for Data Centers  

E-Print Network (OSTI)

- tioners, cooling towers, pumps). One possibility is to al- locate workloads so as to minimize the energy, and cooling. This concern has motivated recent work on frameworks for coordinated monitoring and control relation- ships with respect to support systems such as cooling and power distribution. We claim

Ranganathan, Parthasarathy

357

A Non-Perturbative Study of Gauge Theory on a Non-Commutative Plane  

E-Print Network (OSTI)

We perform a non-perturbative study of pure gauge theory in a two dimensional non-commutative (NC) space. On the lattice, it is equivalent to the twisted Eguchi-Kawai model, which we simulated at N ranging from 25 to 515. We observe a clear large-N scaling for the 1- and 2-point function of Wilson loops, as well as the 2-point function of Polyakov lines. The 2-point functions agree with a universal wave function renormalization. Based on a Morita equivalence, the large-N double scaling limit corresponds to the continuum limit of NC gauge theory, so the observed large-N scaling demonstrates the non-perturbative renormalizability of this NC field theory. The area law for the Wilson loops holds at small physical area as in commutative 2d planar gauge theory, but at large areas we find an oscillating behavior instead. In that regime the phase of the Wilson loop grows linearly with the area. This agrees with the Aharonov-Bohm effect in the presence of a constant magnetic field, identified with the inverse non-commutativity parameter.

W. Bietenholz; F. Hofheinz; J. Nishimura

2002-03-16T23:59:59.000Z

358

Locating a competitive facility in the plane with a robustness criterion*  

E-Print Network (OSTI)

Mar 5, 2010 ... Cajal” contract program, co-financed by the European Social Fund. ... if a facility is located at x, and transportation costs to demand point pi.

359

On the Compression of a Cylinder in Contact with a Plane ...  

Science Conference Proceedings (OSTI)

... same terms as above for body 2 to body I ... An exhaustive literature search was conducted to determine eq.uations ... the sum of z l and z2 enter into the ...

2013-10-24T23:59:59.000Z

360

EFFECTS OF IN-PLANE FIBER WAVINESS ON THE STATIC AND FATIGUE STRENGTH OF FIBERGLASS  

E-Print Network (OSTI)

environmental effects on composite materials for wind turbine blades. The resins that have good environmental. The compression failure mode was characterized by a single fracture surface oriented at an angle through volume fractions less than 30%, the extensional mode dominates and the fibers buckle out of phase

Note: This page contains sample records for the topic "guideways inclined plane" 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

Coloring kk-free intersection graphs of geometric objects in the plane  

Science Conference Proceedings (OSTI)

The intersection graph of a collection C of sets is a graph on the vertex set C, in which C1,C2 ? C are joined by an edge if and only if C1 ? C2 ... Keywords: chromatic number, intersection graph, quasi-planar, string graph, topological graph

Jacob Fox; János Pach

2008-06-01T23:59:59.000Z

362

The bound-optimal cutting plane method: a new paradigm for cutting ...  

E-Print Network (OSTI)

Oct 24, 2013 ... Page 11 ... single cut because, if cut (c) (resp. cut (d)), is added, the segment CD ? AD (resp. ... Typically, as we will show in Section 5, the bound at which. 11 ..... 1.03 91. 91. 1.65 80. 80. 1.50 48. 48 344.00 huck. 11.00. 9. 9.

363

Effect of Drying Time and Temperature on the In-plane and Thru ...  

Science Conference Proceedings (OSTI)

Symposium, Nanotechnology for Energy, Environment, Electronics & Industry ... other substrate materials used in electronic and energy storage technologies, ...

364

D. P. Bentz1 Combination of Transient Plane Source and Slug  

E-Print Network (OSTI)

dynamic simulation of a pure monoatomic glass former resulted in a value as high as m 200- ume, the simulation results show that low frequency vibra- tional modes are stronger at low. J. Crowley and G. Zografi, Thermochim. Acta 380, 79 2001 . 75 V. Adronis and G. Zograti, Pharm. Res

Bentz, Dale P.

365

On the charging and thermal characterization of a micro/nano structured thermal ground plane  

E-Print Network (OSTI)

As power densities in electronic devices have increased dramatically over the last decade, advanced thermal management solutions are required. A significant part of the thermal resistance budget is commonly taken up by the ...

de Bock, H. Peter J.

366

Redeveloping modern housing sites : improving the livability of the ground plane  

E-Print Network (OSTI)

Le Corbusier's "towers in the park" urban design plan had a profound impact on city form in the United States. Its precepts were used to inform many urban renewal schemes of the 1950s and 1960s that tore down existing urban ...

Brownell, Matthew (Matthew Christopher)

2007-01-01T23:59:59.000Z

367

Second law analysis for a variable viscosity plane Poiseuille flow with asymmetric convective cooling  

Science Conference Proceedings (OSTI)

A second-law analysis of a pressure-driven variable viscosity fluid flow through a channel with asymmetric convective cooling at the walls is investigated. Flow is assumed to be steady, laminar and fully-developed. The effect of heat generation due to ... Keywords: Asymmetric convective cooling, Entropy generation analysis, Poiseuille flow, Variable viscosity

O. D. Makinde; A. Aziz

2010-12-01T23:59:59.000Z

368

Equilibrium Geostrophic Turbulence I: A Reference Solution in a ?-Plane Channel  

Science Conference Proceedings (OSTI)

A numerical solution is calculated for quasi-geostrophic, adiabatic, baroclinic, wind-driven flow in a ? channel. The rates of driving and dissipation are such that the solution is turbulent in equilibrium. The equilibrium state is characterized ...

James C. McWilliams; Julianna H. S. Chow

1981-07-01T23:59:59.000Z

369

Emergence of Jets from Turbulence in the Shallow-Water Equations on an Equatorial Beta Plane  

Science Conference Proceedings (OSTI)

Coherent jets, such as the Jovian banded winds, are a prominent feature of rotating turbulence. Shallow-water turbulence models capture the essential mechanism of jet formation, which is systematic eddy momentum flux directed up the mean velocity ...

Brian F. Farrell; Petros J. Ioannou

2009-10-01T23:59:59.000Z

370

Generation of Mean Flows and Jets on a Beta Plane and over Topography  

Science Conference Proceedings (OSTI)

This paper proposes and discusses mechanisms whereby mean flows and jets are produced by differential rotation and by topographic effects. It is shown that, in general, a mean gradient of potential vorticity not only inhibits the cascade of ...

Geoffrey K. Vallis; Matthew E. Maltrud

1993-07-01T23:59:59.000Z

371

Storm-Forced Near-Inertial Waves on a Beta Plane  

Science Conference Proceedings (OSTI)

The influence of the beta effect, that is, the variation of the Coriolis parameter with latitude on the energy flux from moving storms to the oceanic internal wave field is considered. Large-scale, fast-moving storms are emphasized, and the ...

Johan Nilsson

1995-11-01T23:59:59.000Z

372

Nuclear Engineering and Design 186 (1998) 379394 Failure of Zircaloy cladding under transverse plane-strain  

E-Print Network (OSTI)

volume 4: MATPRO: "A Library of Materials Properties for Light Water Reactors Accident Analysis", NUREG

Motta, Arthur T.

373

Planes, trains, and automobiles--the San Juan International Airport : designing for intermodal access  

E-Print Network (OSTI)

This thesis explores how intermodal transportation centers may be designed so that balances may be incorporated between efficient modal connections and functionality, and basic human needs and comforts. The term "intermodal" ...

Kerr, Susannah

1996-01-01T23:59:59.000Z

374

Resonance behaviour for classes of billiards on the Poincare half-plane  

E-Print Network (OSTI)

-IIAC/INST- OFF Mentors: Stosh Kozimor and Dave Clark Poster Title: Insights into the Selectivity of Minor: Jeremie Lasue, Postdoctoral Research Associate ­ ISR-1/EES- 14/C-PCS Mentor: Roger Wiens, Dave Vaniman, Postdoctoral Research Associate ­ LANSCE- LC/EES-DO Mentor: Jaroslaw Majewski and Don Hickmott Poster Title

Dent, Alexander W.

375

An optical see-through head mounted display with addressable focal planes  

Science Conference Proceedings (OSTI)

Most existing stereoscopic head mounted displays (HMDs), presenting a pair of stereoscopic images at a fixed focal distance, lack the ability to correctly render the naturally coupled accommodation and convergence cues. Psychophysical studies have shown ...

Sheng Liu; Dewen Cheng; Hong Hua

2008-09-01T23:59:59.000Z

376

Building the Plane We're Flying: Challenges and Opportunities in Louisiana Coastal Restoration.  

E-Print Network (OSTI)

??In response to significant wetland loss and damage to the hurricane protection system occurring in the 2005 hurricane season, the Louisiana legislature directed the Department… (more)

Crutcher, Morgan

2011-01-01T23:59:59.000Z

377

Experimental evaluation of the in-plane seismic behavior of store-front window systems  

E-Print Network (OSTI)

Fallout .cracking and (b) glass fallout (AR 1.0 specimens subjectedon percent area of glass fallout (AR 1.0 specimens subjected

Eva, Charles Almond

2009-01-01T23:59:59.000Z

378

Perturbing the superconducting planes in CeCoIn5 by Sn substitution  

E-Print Network (OSTI)

XAS data were collected at SSRL, a national user facilityRadiation Labora- tory (SSRL). The single crystal samples

2005-01-01T23:59:59.000Z

379

Plane Parallel Albedo Biases from Satellite Observations. Part I: Dependence on Resolution and Other Factors  

Science Conference Proceedings (OSTI)

Due to cloud heterogeneity and the nonlinear dependence of albedo on cloud water content, the average albedo of a cloudy scene found by calculating the albedo of independent pixels within the scene tends to be different from the albedo calculated ...

Lazaros Oreopoulos; Roger Davies

1998-05-01T23:59:59.000Z

380

Experimental evaluation of the in-plane seismic behavior of store-front window systems  

E-Print Network (OSTI)

conditions. (ii) Window Film and Attachment – Film-coatedthe mullion (window film and attachment system are installedprotocol, (ii) window film type and attachment, and (iii)

Eva, Charles Almond

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Solving of non-stationary heat transfer in a plane plate  

Science Conference Proceedings (OSTI)

In this paper we present software application destined for study of heat transfer problems that is a part of education of subject Process engineering taught at the Tomas Bata University in Zlin. The application we use as a teaching aid for calculation ... Keywords: maple, non-stationary heat transfer, software application, temperature field

Dagmar Janá?ová; Hana Charvátová; Karel Kolomazník; Vladimír Vašek; Pavel Mokrejš

2011-05-01T23:59:59.000Z

382

Analytic Green’s Function for Radiative Transfer in Plane-Parallel Atmospheres  

Science Conference Proceedings (OSTI)

Green’s function is a widely used approach for boundary value problems. In problems related to radiative transfer, Green’s function has been found to be useful in land, ocean, and atmosphere remote sensing. It is also a key element in higher ...

Yi Qin; Michael A. Box

2005-08-01T23:59:59.000Z

383

Experimental evaluation of the in-plane seismic behavior of store-front window systems.  

E-Print Network (OSTI)

??Glass window systems have been shown to suffer significant damage during earthquake loading, resulting in the potential for human injuries and significant economic losses. Film-coated… (more)

Eva, Charles Almond

2009-01-01T23:59:59.000Z

384

Experimental evaluation of the in-plane seismic behavior of store-front window systems  

E-Print Network (OSTI)

versus stiff rubber blocks), glass to mullion clearances andsupport for the glass. The blocks were 2 inches long, 5/8blocks were installed around the perimeter of the glass.

Eva, Charles Almond

2009-01-01T23:59:59.000Z

385

Very Low-mass Stellar and Substellar Companions to Solar-like Stars from MARVELS II: A Short-period Companion Orbiting an F Star with Evidence of a Stellar Tertiary And Significant Mutual Inclination  

E-Print Network (OSTI)

We report the discovery via radial velocity of a short-period (P = 2.430420 \\pm 0.000006 days) companion to the F-type main sequence star TYC 2930-00872-1. A long-term trend in the radial velocities indicates the presence of a tertiary stellar companion with $P > 2000$ days. High-resolution spectroscopy of the host star yields T_eff = 6427 +/- 33 K, log(g) = 4.52 +/- 0.14, and [Fe/H]=-0.04 +/- 0.05. These parameters, combined with the broad-band spectral energy distribution and parallax, allow us to infer a mass and radius of the host star of M_1=1.21 +/- 0.08 M_\\odot and R_1=1.09_{-0.13}^{+0.15} R_\\odot. We are able to exclude transits of the inner companion with high confidence. The host star's spectrum exhibits clear Ca H and K core emission indicating stellar activity, but a lack of photometric variability and small v*sin(I) suggest the primary's spin axis is oriented in a pole-on configuration. The rotational period of the primary from an activity-rotation relation matches the orbital period of the inner...

Fleming, Scott W; Barnes, Rory; Beatty, Thomas G; Crepp, Justin R; De Lee, Nathan; Esposito, Massimiliano; Femenia, Bruno; Ferreira, Leticia; Gary, Bruce; Gaudi, B Scott; Ghezzi, Luan; Hernández, Jonay I González; Hebb, Leslie; Jiang, Peng; Lee, Brian; Nelson, Ben; de Mello, Gustavo F Porto; Shappee, Benjamin J; Stassun, Keivan; Thompson, Todd A; Tofflemire, Benjamin M; Wisniewski, John P; Wood-Vasey, W Michael; Agol, Eric; Prieto, Carlos Allende; Bizyaev, Dmitry; Brewington, Howard; Cargile, Phillip A; Coban, Louis; Costello, Korena S; da Costa, Luis N; Good, Melanie L; Hua, Nelson; Kane, Stephen R; Lander, Gary R; Liu, Jian; Ma, Bo; Mahadevan, Suvrath; Maia, Marcio A G; Malanushenko, Elena; Malanushenko, Viktor; Muna, Demitri; Nguyen, Duy Cuong; Oravetz, Daniel; Paegert, Martin; Pan, Kaike; Pepper, Joshua; Rebolo, Rafael; Roebuck, Eric J; Santiago, Basilio X; Schneider, Donald P; Shelden, Alaina; Simmons, Audrey; Sivarani, Thirupathi; Snedden, Stephanie; Vincent, Chelsea L M; Wan, Xiaoke; Wang, Ji; Weaver, Benjamin A; Weaver, Gwendolyn M; Zhao, Bo

2012-01-01T23:59:59.000Z

386

Upper internals arrangement for a pressurized water reactor  

DOE Patents (OSTI)

In a pressurized water reactor with all of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation guide-way. In the elevations above the upper internals upper support assembly, the instrumentation is protected and aligned by upper mounted instrumentation columns that are part of the instrumentation guide-way and extend from the upper support assembly towards the reactor head in hue with a corresponding head penetration. The upper mounted instrumentation columns are supported laterally at one end by an upper guide tube and at the other end by the upper support plate.

Singleton, Norman R; Altman, David A; Yu, Ching; Rex, James A; Forsyth, David R

2013-07-09T23:59:59.000Z

387

Segmented rail linear induction motor  

DOE Patents (OSTI)

A segmented rail linear induction motor has a segmented rail consisting of a plurality of nonferrous electrically conductive segments aligned along a guideway. The motor further includes a carriage including at least one pair of opposed coils fastened to the carriage for moving the carriage. A power source applies an electric current to the coils to induce currents in the conductive surfaces to repel the coils from adjacent edges of the conductive surfaces.

Cowan, Jr., Maynard (1107 Stagecoach Rd. SE., Albuquerque, NM 87123); Marder, Barry M. (1412 Pinnacle View Dr. NE., Albuquerque, NM 87123)

1996-01-01T23:59:59.000Z

388

Integrated null-flux suspension and multiphase propulsion system for magnetically-levitated vehicles  

DOE Patents (OSTI)

A propulsion and stabilization system are described comprising a series of coils mounted vertically on the walls of the guideway to provide suspension, lateral guidance, and propulsion of a magnetically levitated vehicle. This system further allows for altering the magnetic field effects by changing the relative position of the loops comprising the coils either longitudinally and/or vertically with resulting changes in the propulsion, the vertical stability, and the suspension. 8 figures.

Rote, D.M.; He, J.; Johnson, L.R.

1994-01-04T23:59:59.000Z

389

Segmented rail linear induction motor  

DOE Patents (OSTI)

A segmented rail linear induction motor has a segmented rail consisting of a plurality of nonferrous electrically conductive segments aligned along a guideway. The motor further includes a carriage including at least one pair of opposed coils fastened to the carriage for moving the carriage. A power source applies an electric current to the coils to induce currents in the conductive surfaces to repel the coils from adjacent edges of the conductive surfaces. 6 figs.

Cowan, M. Jr.; Marder, B.M.

1996-09-03T23:59:59.000Z

390

Integrated null-flux suspension and multiphase propulsion system for magnetically-levitated vehicles  

DOE Patents (OSTI)

This report discusses a propulsion and stabilization system comprising a series of figure 8 coils mounted vertically on the walls of the guideway to provide suspension, lateral guidance and propulsion of a magnetically levitated vehicle. This system further allows for altering the magnetic field effects by changing the relative position of the loops comprising the figure 8 coils either longitudinally and/or vertically with resulting changes in the propulsion, the vertical stability, and the suspension.

Rote, D.M.; He, Jianliang; Johnson, L.R.

1992-01-01T23:59:59.000Z

391

LOCFES-NL: a tool for testing nonlinear spatial approximations to neutron transport in plane-parallel geometry  

E-Print Network (OSTI)

The Linear One-cell Functional Experimental Studies (LOCFES) suite of codes provides a user with a means of testing and comparing spatial approximations to the monoenergetic, azimuthally symmetric, steady-state, one dimensional transport equation. Prior to the latest addendum described in this thesis, the structure of the codes in this suite necessitated that the functional form for the volumetric flux values depend linearly on the cell's edge flux and source moments. A user supplied set of coefficients for these terms could then be used to specify any linear spatial approximation. While such linear methods represent the bulk of closure approximations, some methods that permit this dependence to be nonlinear have proven to be very effective as well. This thesis is concerned with an addition (LOCFES-NL) to the Linear One-Cell Experimental Studies (LOCFES) suite of transport codes to include support for nonlinear spatial approximations. This latest addition to the suite lets the user implement any method and evaluate the method's performance on user-supplied problems. For illustration, sample computations compare the nonlinear Exponential Method (EM) of Barbucci and Pasquantonio to the Nonlinear Characteristics (NC) Method of Walters and Wareing and to other common linear methods.

Nolen, Steven Douglas

1997-01-01T23:59:59.000Z

392

P2.13 Characterization of a-Plane GaN Layers Grown on Patterned r ...  

Science Conference Proceedings (OSTI)

... attracted significant attention for optoelectronic device applications covering .... Growth of Ingaas on Si(111) with Reduced Size of Selective Growth Window.

393

Out-of-plane magnetic vortices and central peaks: A Comment M. E. Gouv^ea and G. M. Wysin  

E-Print Network (OSTI)

, 30161-970 Belo Horizonte, Minas Gerais, Brazil (February 4, 1997) Costa and Costa [Phys. Rev B 54, 994 were calculated by Monte Carlo­spin dynamics simulation. We point out that the results of the static of cluster Monte Carlo (MC) [11] and spin dynamics, for a 64 � 64 system, averaging Sxx and Szz over 200 MC

Wysin, Gary

394

Aerosol Radiative Impact on Spectral Solar Flux at the Surface, Derived from Principal-Plane Sky Measurements  

Science Conference Proceedings (OSTI)

Accurate measurements of the spectral solar flux reaching the surface in cloud-free conditions are required to determine the aerosol radiative impact and to test aerosol models that are used to calculate radiative forcing of climate. Spectral ...

Y. J. Kaufman; D. Tanré; B. N. Holben; S. Mattoo; L. A. Remer; T. F. Eck; J. Vaughan; Bernadette Chatenet

2002-02-01T23:59:59.000Z

395

Steady-State Dynamics of a Density Current in an f-Plane Nonlinear Shallow-Water Model  

Science Conference Proceedings (OSTI)

The authors study the nonlinear dynamics of a density current generated by a diabatic source in a rotating and a nonrotating system, both in the presence and in the absence of frictional losses, using a steady-state hydrostatic shallow-water ...

Giovanni A. Dalu; Marina Baldi

2010-02-01T23:59:59.000Z

396

A search for transiting extrasolar planet candidates in the OGLE-II microlens database of the galactic plane  

E-Print Network (OSTI)

In the late 1990s, the Optical Gravitational Lensing Experiment (OGLE) team conducted the second phase of their long-term monitoring programme, OGLE-II, which since has been superseded by OGLE-III. All the monitoring data of this second phase, which was primarily aimed at finding microlensing events, have recently been made public. Fields in the OGLE-II survey have typically been observed with a cadence of once per night, over a period of a few months per year. We investigated whether these radically differently sampled data can also be used to search for transiting extrasolar planets, in particular in the light of future projects such as PanSTARRS and SkyMapper, which will monitor large fields, but mostly not at a cadence typical for transit studies. We selected data for ~15700 stars with 13.0

Snellen, I; de Hoon, M; Vuijsje, F

2007-01-01T23:59:59.000Z

397

Epidemiology of fatal and nonfatal injuries in the Avianca plane crash: Avianca Flight 052, January 25, 1990. Final report  

SciTech Connect

On January 25, 1990 Avianca Flight 052 crashed without a conflagration after running out of fuel; 73 persons died, 85 survived. Epidemiological, biostatistical, and related analytical methods were used for the analysis of decedent and survivor injury patterns and for the purpose of examining selected EMS and hospital issues-relative to disaster planning and incident management and response. Medical examiner and hospital records for all decedents and survivors were identified, abstracted, and coded using the International Classification of Diseases with Clinical Modifications, 9th Edition (ICD 9-CM) to determine the nature of injuries and comorbid conditions. Injury severity values were determined using the 1985 Abbreviated Injury Scale with Epidemiologic Modifications (AIS 85-EM).

Barancik, J.I.; Kramer, C.F.; Thode, H.C. Jr.; Kahn, C.J. [Brookhaven National Lab., Upton, NY (United States); Greensher, J.; Schechter, S. [Nassau County Dept. of Health, Mineola, NY (United States)

1992-11-01T23:59:59.000Z

398

Journal of Neuroscience Methods 62 (1995) 2l-27 A phase plane representation of rat exploratory behavior  

E-Print Network (OSTI)

(roundtrips)performedfrom areferenceplacetermedtherat's homebase.We offer aphaseplanerepresentationof excursions

399

A Toy Model of the Instability in the Equatorially Trapped Convectively Coupled Waves on the Equatorial Beta Plane  

Science Conference Proceedings (OSTI)

The equatorial atmospheric variability shows a spectrum of significant peaks in the wavenumber–frequency domain. These peaks have been identified with the equatorially trapped wave modes of rotating shallow water wave theory. This paper addresses ...

Joseph Allan Andersen; Zhiming Kuang

2008-12-01T23:59:59.000Z

400

Zonal Jets over Topography on a Beta-Plane, with Applications to the Kuroshio Extension over the Shatsky Rise  

Science Conference Proceedings (OSTI)

The response of an initially zonal barotropic or baroclinic jet to an isolated seamount or a meridional ridge is investigated here using a three-dimensional primitive equation model with a free surface. An eastward jet with an axial speed U and a ...

Shenn-Yu Chao

1994-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Achieving Near Zero SSN Power Delivery Networks by Eliminating Power Planes and Using Constant Current Power Transmission Lines  

E-Print Network (OSTI)

method to remove SSN and to increase the per-pin data rate. However, to enable power transmissions lines of all, data transition causes the supply current to switch: the high-state of data draws current from the power supply network, but the low-state of data interrupts the current flow. Due to the terminating

Swaminathan, Madhavan

402

HIP 38939B: A NEW BENCHMARK T DWARF IN THE GALACTIC PLANE DISCOVERED WITH Pan-STARRS1  

SciTech Connect

We report the discovery of a wide brown dwarf companion to the mildly metal-poor ([Fe/H] = -0.24), low Galactic latitude (b = 1.{sup 0}88) K4V star HIP 38939. The companion was discovered by its common proper motion with the primary and its red optical (Pan-STARRS1) and blue infrared (Two Micron All Sky Survey) colors. It has a projected separation of 1630 AU and a near-infrared spectral type of T4.5. As such it is one of only three known companions to a main-sequence star which have early/mid T spectral types of (the others being HN Peg B and {epsilon} Indi B). Using chromospheric activity we estimate an age for the primary of 900{+-}{sup 1900}{sub 600} Myr. This value is also in agreement with the age derived from the star's weak ROSAT detection. Comparison with evolutionary models for this age range indicates that HIP 38939B falls in the mass range 38 {+-} 20 M{sub Jup} with an effective temperature range of 1090 {+-} 60 K. Fitting our spectrum with atmospheric models gives a best-fitting temperature of 1100 K. We include our object in an analysis of the population of benchmark T dwarfs and find that while older atmospheric models appeared to overpredict the temperature of the coolest objects compared to evolutionary models, more recent atmospheric models provide better agreement.

Deacon, Niall R.; Liu, Michael C.; Magnier, Eugene A.; Bowler, Brendan P.; Burgett, W. S.; Chambers, K. C.; Flewelling, H.; Kaiser, N.; Morgan, J. S.; Sweeney, W. E.; Tonry, J. L.; Wainscoat, R. J.; Waters, C. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Redstone, Joshua [Facebook, 1601 S. California Avenue, Palo Alto, CA 94304 (United States); Goldman, Bertrand [Max Planck Institute for Astronomy, Koenigstuhl 17, D-69117 Heidelberg (Germany); Price, P. A., E-mail: deacon@mpia.de [Princeton University Observatory, 4 Ivy Lane, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States)

2012-08-20T23:59:59.000Z

403

Analysis of the Effect of Ground Plane Size on the Performance of a Probe-fed Cavity Resonator Microstrip Antenna  

Science Conference Proceedings (OSTI)

In this paper, a probe-fed rectangular microstrip patch antenna with partially reflective superstrate at terahertz frequency (600 GHz) has been analyzed and simulated. The analysis of the partially reflective surface shows the highly reflective property ... Keywords: Directivity, Frequency-selective-surface, Probe-fed-microstrip antenna, Terahertz spectrum

Kumud Ranjan Jha; G. Singh

2013-07-01T23:59:59.000Z

404

Full multi grid method for electric field computation in point-to-plane streamer discharge in air at atmospheric pressure  

Science Conference Proceedings (OSTI)

Streamers dynamics are characterized by the fast propagation of ionized shock waves at the nanosecond scale under very sharp space charge variations. The streamer dynamics modelling needs the solution of charged particle transport equations coupled to ... Keywords: Elliptic equation solver, Full multi-grid method, Plasma discharge, Streamer simulation

S. Kacem; O. Eichwald; O. Ducasse; N. Renon; M. Yousfi; K. Charrada

2012-01-01T23:59:59.000Z

405

Topographic Influences on Wind-Driven, Stratified Flow in a ?-Plane Channel: An Idealized Model for the Antarctic Circumpolar Current  

Science Conference Proceedings (OSTI)

Topographic influences are examined in an eddy-resolving model of oceanic channel flow forced by steady zonal winds. With small explicit lateral friction, transient eddies generated by the baroclinic instability of the mean flow transfer momentum ...

A. M. Treguier; J. C. McWilliams

1990-03-01T23:59:59.000Z

406

Design and Experimental Validation of a Micro-Nano structured Thermal Ground Plane for high-g environments.  

E-Print Network (OSTI)

??As capabilities and associated power consumption of computers, portable devices, avionics and other electronics systems have risen rapidly over the last decade, chip heat fluxes… (more)

de Bock, Hendrik Pieter Jacobus

2013-01-01T23:59:59.000Z

407

A Compact Parallel-plane Perpendicular-current Feed for a Modified Equiangular Spiral Antenna and Related Circuits  

E-Print Network (OSTI)

This work describes the design and measurement of a compact bidirectional ultrawideband (UWB) modified equiangular spiral antenna with an integrated feed internally matched to a 50-Ohm microstrip transmission line. A UWB transition from microstrip to double-sided parallel-strip line (DSPSL) soldered to a short (1.14 mm) twin-line transmission line feeds the spiral. The currents on the feed travel in a direction approximately perpendicular to the direction of the currents on the spiral at the points where the feed passes the spiral in close proximity (0.57 mm). Holes were etched from the metal arms of the spiral to reduce the impedance mismatch caused by coupling between the transmission line feed and the spiral. This work also describes a low-loss back-to-back transition from coaxial line to DSPSL, an in-phase connectorized 3 dB DSPSL power divider made using three of those transitions, a 2:1 in-phase DSPSL power divider, a 3:1 in-phase DSPSL power divider, a radial dipole fed by DSPSL, an array of those dipoles utilizing the various power dividers, and a UWB circular monopole antenna fed by DSPSL. Measured and simulated results show good agreement for the designed antennas and circuits.

Eubanks, Travis Wayne

2010-05-01T23:59:59.000Z

408

Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same  

DOE Patents (OSTI)

A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft sweep.

Wetzel, Kyle Kristopher (Lawrence, KS)

2008-03-18T23:59:59.000Z

409

Preliminary design for a maglev development facility  

DOE Green Energy (OSTI)

A preliminary design was made of a national user facility for evaluating magnetic-levitation (maglev) technologies in sizes intermediate between laboratory experiments and full-scale systems. A technical advisory committee was established and a conference was held to obtain advice on the potential requirements of operational systems and how the facility might best be configured to test these requirements. The effort included studies of multiple concepts for levitating, guiding, and propelling maglev vehicles, as well as the controls, communications, and data-acquisition and -reduction equipment that would be required in operating the facility. Preliminary designs for versatile, dual 2-MVA power supplies capable of powering attractive or repulsive systems were developed. Facility site requirements were identified. Test vehicles would be about 7.4 m (25 ft) long, would weigh form 3 to 7 metric tons, and would operate at speeds up to 67 m/s (150 mph) on a 3.3-km (2.05-mi) elevated guideway. The facility would utilize modular vehicles and guideways, permitting the substitution of levitation, propulsion, and guideway components of different designs and materials for evaluation. The vehicle would provide a test cell in which individual suspension or propulsion components or subsystems could be tested under realistic conditions. The system would allow economical evaluation of integrated systems under varying weather conditions and in realistic geometries.

Coffey, H.T.; He, J.L.; Chang, S.L.; Bouillard, J.X.; Chen, S.S.; Cai, Y.; Hoppie, L.O.; Lottes, S.A.; Rote, D.M. [Argonne National Lab., IL (United States); Zhang, Z.Y. [Polytechnic Univ., Brooklyn, NY (United States); Myers, G.; Cvercko, A. [Sterling Engineering, Westchester, IL (United States); Williams, J.R. [Alfred Benesch and Co., Chicago, IL (United States)

1992-04-01T23:59:59.000Z

410

BENCHMARKING FAST-TO-ALFVEN MODE CONVERSION IN A COLD MAGNETOHYDRODYNAMIC PLASMA  

SciTech Connect

Alfven waves may be generated via mode conversion from fast magnetoacoustic waves near their reflection level in the solar atmosphere, with implications both for coronal oscillations and for active region helioseismology. In active regions this reflection typically occurs high enough that the Alfven speed a greatly exceeds the sound speed c, well above the a = c level where the fast and slow modes interact. In order to focus on the fundamental characteristics of fast/Alfven conversion, stripped of unnecessary detail, it is therefore useful to freeze out the slow mode by adopting the gravitationally stratified cold magnetohydrodynamic model c {yields} 0. This provides a benchmark for fast-to-Alfven mode conversion in more complex atmospheres. Assuming a uniform inclined magnetic field and an exponential Alfven speed profile with density scale height h, the Alfven conversion coefficient depends on three variables only: the dimensionless transverse-to-the-stratification wavenumber {kappa} = kh, the magnetic field inclination from the stratification direction {theta}, and the polarization angle {phi} of the wavevector relative to the plane containing the stratification and magnetic field directions. We present an extensive exploration of mode conversion in this parameter space and conclude that near-total conversion to outward-propagating Alfven waves typically occurs for small {theta} and large {phi} (80{sup 0}-90{sup 0}), though it is absent entirely when {theta} is exactly zero (vertical field). For wavenumbers of helioseismic interest, the conversion region is broad enough to encompass the whole chromosphere.

Cally, Paul S. [Monash Centre for Astrophysics and School of Mathematical Sciences, Monash University, Clayton, Victoria 3800 (Australia); High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307 (United States); Hansen, Shelley C., E-mail: paul.cally@monash.edu, E-mail: shelley.hansen@monash.edu [Monash Centre for Astrophysics and School of Mathematical Sciences, Monash University, Clayton, Victoria 3800 (Australia)

2011-09-10T23:59:59.000Z

411

THE ROLE OF KOZAI CYCLES IN NEAR-EARTH BINARY ASTEROIDS  

SciTech Connect

We investigate the Kozai mechanism in the context of near-Earth binaries and the Sun. The Kozai effect can lead to changes in eccentricity and inclination of the binary orbit, but it can be weakened or completely suppressed by other sources of pericenter precession, such as the oblateness of the primary body. Through numerical integrations including primary oblateness and three bodies (the two binary components and the Sun), we show that Kozai cycles cannot occur for the closely separated near-Earth binaries in our sample. We demonstrate that this is due to pericenter precession around the oblate primary, even for very small oblateness values. Since the majority of observed near-Earth binaries are not well separated, we predict that Kozai cycles do not play an important role in the orbital evolution of most near-Earth binaries. For a hypothetical wide binary modeled after 1998 ST27, the separation is large at 16 primary radii and so the orbital effects of primary oblateness are lessened. For this wide binary, we illustrate the possible excursions in eccentricity and inclination due to Kozai cycles as well as depict stable orientations for the binary's orbital plane. Unstable orientations lead to collisions between binary components, and we suggest that the Kozai effect acting in wide binaries may be a route to the formation of near-Earth contact binaries.

Fang, Julia; Margot, Jean-Luc [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)

2012-03-15T23:59:59.000Z

412

GREEN BANK TELESCOPE OBSERVATIONS OF THE NH{sub 3} (3, 3) AND (6, 6) TRANSITIONS TOWARD SAGITTARIUS A MOLECULAR CLOUDS  

SciTech Connect

Ammonia (3, 3) and (6, 6) transitions have been observed using the Green Bank Telescope toward the Sgr A region. The gas is mainly concentrated in 50 km s{sup -1} and 20 km s{sup -1} clouds located in a plane inclined to the galactic plane. These 'main' clouds appear to be virialized and influenced by the expansion of the supernova remnant Sgr A East. The observed emission shows very complicated features in the morphology and velocity structure. Gaussian multi-component fittings of the observed spectra revealed that various 'streaming' gas components exist all over the observed region. These components include those previously known as 'streamers' and 'ridges', but most of these components appear not to be directly connected to the major gas condensations (the 50 km s{sup -1} and 20 km s{sup -1} clouds). They are apparently located out of the galactic plane, and they may have a different origin than the major gas condensations. Some of the streaming components are expected to be sources that feed the circumnuclear disk of our Galactic center directly and episodically. They may also evolve differently than major gas condensations under the influence of the activities of the Galactic center.

Minh, Young Chol [Korea Astronomy and Space Science Institute, Daeduk-daero 776, Yuseong, Daejeon 305-348 (Korea, Republic of); Liu, Hauyu Baobab; Ho, Paul T. P.; Hsieh, Pei-Ying; Su, Yu-Nung [Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 10617, Taiwan (China); Kim, Sungsoo S. [Department of Astronomy and Space Science, Kyung Hee University, Yongin, Kyungki-do 446-701 (Korea, Republic of); Wright, Melvyn [Radio Astronomy Laboratory, University of California, Berkeley, 601 Campbell Hall, Berkeley, CA 94720 (United States)

2013-08-10T23:59:59.000Z

413

A stochastic flow rule for granular materials  

E-Print Network (OSTI)

There have been many attempts to derive continuum models for dense granular flow, but a general theory is still lacking. Here, we start with Mohr-Coulomb plasticity for quasi-2D granular materials to calculate (average) stresses and slip planes, but we propose a "stochastic flow rule" (SFR) to replace the principle of coaxiality in classical plasticity. The SFR takes into account two crucial features of granular materials - discreteness and randomness - via diffusing "spots" of local fluidization, which act as carriers of plasticity. We postulate that spots perform random walks biased along slip-lines with a drift direction determined by the stress imbalance upon a local switch from static to dynamic friction. In the continuum limit (based on a Fokker-Planck equation for the spot concentration), this simple model is able to predict a variety of granular flow profiles in flat-bottom silos, annular Couette cells, flowing heaps, and plate-dragging experiments -- with essentially no fitting parameters -- although it is only expected to function where material is at incipient failure and slip-lines are inadmissible. For special cases of admissible slip-lines, such as plate dragging under a heavy load or flow down an inclined plane, we postulate a transition to rate-dependent Bagnold rheology, where flow occurs by sliding shear planes. With different yield criteria, the SFR provides a general framework for multiscale modeling of plasticity in amorphous materials, cycling between continuum limit-state stress calculations, meso-scale spot random walks, and microscopic particle relaxation.

Ken Kamrin; Martin Z. Bazant

2006-09-19T23:59:59.000Z

414

Patterns and instability of grannular flow  

Science Conference Proceedings (OSTI)

Dense granular flows are often observed to become unstable and form inhomogeneous structures in nature or industry. Although recently significant advances have been made in understanding simple flows, instabilities are often not understood in detail. We present experimental and numerical results that show the formation of longitudinal stripes. These arise from instability of the uniform flowing state of granular media on a rough inclined plane. The form of the stripes depends critically on the mean density of the flow with a robust form of stripes at high density that consists of fast sliding plug-like regions (stripes) on top of highly agitated boiling material -- a configuration reminiscent of the Leidenfrost effect when a droplet of liquid lifted by its vapor is hovering above a hot surface.

Ecke, Robert E [Los Alamos National Laboratory; Borzsonyi, Tamas [NON LANL; Mcelwaine, Jim N [U. CAMBRIDGE

2009-01-01T23:59:59.000Z

415

Patterns in Flowing Sand: Understanding the Physics of Granular Flow  

E-Print Network (OSTI)

Dense granular flows are often unstable and form inhomogeneous structures. Although significant advances have been recently made in understanding simple flows, instabilities of such flows are often not understood. We present experimental and numerical results that show the formation of longitudinal stripes that arise from instability of the uniform flowing state of granular media on a rough inclined plane. The form of the stripes depends critically on the mean density of the flow with a robust form of stripes at high density that consists of fast sliding plug-like regions (stripes) on top of highly agitated boiling material - a configuration reminiscent of the Leidenfrost effect when a droplet of liquid lifted by its vapor is hovering above a hot surface.

Tamas Borzsonyi; Robert E. Ecke; Jim N. McElwaine

2009-10-01T23:59:59.000Z

416

Tire shreds as lightweight retaining wall backfill: Active conditions  

Science Conference Proceedings (OSTI)

A 4.88-m-high retaining wall test facility was constructed to test tire shreds as retaining wall backfill. The front wall of the facility could be rotated outward away from the fill and was instrumented to measure the horizontal stress. Measurement of movement within the backfill and settlement of the backfill surface during wall rotation allowed estimation of the pattern of movement within the fill. Tests were conducted with tire shreds from three suppliers. Moreover, horizontal stress at this rotation for tire shreds was about 35% less than the active stress expected for conventional granular backfill. Design parameters were developed using two procedures; the first used the coefficient of lateral earth pressure and the other was based on equivalent fluid pressure. The inclination of the sliding plane with respect to horizontal was estimated to range from 61{degree} to 70{degree} for the three types of shreds.

Tweedie, J.J. [State of Maine Dept. of Transportation, Augusta, ME (United States); Humphrey, D.N.; Sandford, T.C. [Univ. of Maine, Orono, ME (United States). Dept. of Civil and Environmental Engineering

1998-11-01T23:59:59.000Z

417

Investigation and simulation of muon cooling rings with tilted solenoids  

DOE Green Energy (OSTI)

Alternating solenoid focused muon cooling ring without special bending magnets is considered and investigate in detail. Both fringe field between solenoid coils with opposite directed current, and an inclination of the coils in vertical plane are used to provide a bending and closing of the particle trajectories. Realistic (Maxwellian) magnetic field is calculated and used for a simulation. Methodic is developed and applied to find closed orbit at any energy, dispersion, region of stability, and other conventional accelerator characteristics. Earlier proposed RFOFO cooling ring with 200 MHz RF system and liquid hydrogen absorbers is investigated in detail. After an optimization, normalized 6D emittance about 20 mm{sup 3} and transmission 57% are obtained.

Valeri I. Balbekov

2003-05-28T23:59:59.000Z

418

LOADING DEVICE  

DOE Patents (OSTI)

A device is presented for loading or charging bodies of fissionable material into a reactor. This device consists of a car, mounted on tracks, into which the fissionable materials may be placed at a remote area, transported to the reactor, and inserted without danger to the operating personnel. The car has mounted on it a heavily shielded magazine for holding a number of the radioactive bodies. The magazine is of a U-shaped configuration and is inclined to the horizontal plane, with a cap covering the elevated open end, and a remotely operated plunger at the lower, closed end. After the fissionable bodies are loaded in the magazine and transported to the reactor, the plunger inserts the body at the lower end of the magazine into the reactor, then is withdrawn, thereby allowing gravity to roll the remaining bodies into position for successive loading in a similar manner.

Ohlinger, L.A.

1958-10-01T23:59:59.000Z

419

The local standard of rest and the well in the velocity distribution  

E-Print Network (OSTI)

It is now recognised that the traditional method of calculating the LSR fails. We find an improved estimate of the LSR by making use of the larger and more accurate database provided by XHIP and repeating our preferred analysis from Francis & Anderson (2009a). We confirm an unexpected high value of $U_0$ by calculating the mean for stars with orbits sufficiently inclined to the Galactic plane that they do not participate in bulk streaming motions. Our best estimate of the solar motion with respect to the LSR $(U_0, V_0, W_0) = (14.1 \\pm 1.1, 14.6 \\pm 0.4, 6.9 \\pm 0.1)$ km\\ s$^{-1}$.

Francis, Charles

2013-01-01T23:59:59.000Z

420

A natural formation scenario for misaligned and short-period eccentric extrasolar planets  

E-Print Network (OSTI)

Recent discoveries of strongly misaligned transiting exoplanets pose a challenge to the established planet formation theory which assumes planetary systems to form and evolve in isolation. However, the fact that the majority of stars actually do form in star clusters raises the question how isolated forming planetary systems really are. Besides radiative and tidal forces the presence of dense gas aggregates in star-forming regions are potential sources for perturbations to protoplanetary discs or systems. Here we show that subsequent capture of gas from large extended accretion envelopes onto a passing star with a typical circumstellar disc can tilt the disc plane to retrograde orientation, naturally explaining the formation of strongly inclined planetary systems. Furthermore, the inner disc regions may become denser, and thus more prone to speedy coagulation and planet formation. Pre-existing planetary systems are compressed by gas inflows leading to a natural occurrence of close-in misaligned hot Jupiters a...

Thies, Ingo; Goodwin, Simon P; Stamatellos, Dimitris; Whitworth, Anthony P

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

An improved model for natural convection heat loss from modified cavity receiver of solar dish concentrator  

Science Conference Proceedings (OSTI)

A 2-D model has been proposed to investigate the approximate estimation of the natural convection heat loss from modified cavity receiver of without insulation (WOI) and with insulation (WI) at the bottom of the aperture plane in our previous article. In this paper, a 3-D numerical model is presented to investigate the accurate estimation of natural convection heat loss from modified cavity receiver (WOI) of fuzzy focal solar dish concentrator. A comparison of 2-D and 3-D natural convection heat loss from a modified cavity receiver is carried out. A parametric study is carried out to develop separate Nusselt number correlations for 2-D and 3-D geometries of modified cavity receiver for estimation of convective heat loss from the receiver. The results show that the 2-D and 3-D are comparable only at higher angle of inclinations (60 {solar dish collector, when compared with other well known models. (author)

Reddy, K.S.; Sendhil Kumar, N. [Heat Transfer and Thermal Power Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamilnadu 600036 (India)

2009-10-15T23:59:59.000Z

422

Stirling cycle heat pump for heating and/or cooling systems  

Science Conference Proceedings (OSTI)

This patent describes a duplex Stirling cycle machine acting as a heat pump. It comprises: a Stirling engine having pistons axially displaceable within parallel cylinders, the engine further having a swashplate rotatable about an axis of, rotation parallel to the cylinders and defining a plane inclined from the axis of rotation. The pistons connected to the swashplate via crossheads whereby axial displacement of the pistons is converted to rotation of the swashplate, and a Stirling cycle heat pump having a compression heat exchanger, an expansion heat exchanger and a regenerator with pistons equal in number to the engine pistons and axially displaceable within cylinders which are oriented co-axially with the engine cylinders. The crossheads further connected to the heat pump pistons whereby the heat pump pistons move simultaneously with the engine pistons over an equal stroke distance.

Meijer, R.J.; Khalili, K.; Meijer, E.; Godett, T.M.

1991-03-05T23:59:59.000Z

423

XTE J1946+274 = GRO J1944+26: An Enigmatic Be/X-ray Binary  

E-Print Network (OSTI)

XTE J1946+274 = GRO J1944+26 is a 15.8 s Be/X-ray pulsar discovered simultaneously in 1998 September with the Burst and Transient Source Experiment (BATSE) on the Compton Gamma Ray Observatory (CGRO) and the All-Sky Monitor (ASM) on the Rossi X-ray Timing Explorer (RXTE). Here we present new results from BATSE and {\\em RXTE} including a pulse timing analysis, spectral analysis, and evidence for an accretion disk. Our pulse timing analysis yielded an orbital period of 169.2 days, a moderate eccentricity of 0.33, and implied a mass function of 9.7 M_sun. We observed evidence for an accretion disk, a correlation between measured spin-up rate and flux, which was fitted to obtain a distance estimate of 9.5 +/- 2.9 kpc. XTE J1946+274 remained active from 1998 September - 2001 July, undergoing 13 outbursts that were not locked in orbital phase. Comparing RXTE PCA observations from the initial bright outburst in 1998 and the last pair of outbursts in 2001, we found energy and intensity dependent pulse profile variations in both outbursts and hardening spectra with increasing intensity during the fainter 2001 outbursts. In 2001 July, optical Halpha observations indicate a density perturbation appeared in the Be disk as the X-ray outbursts ceased. We propose that the equatorial plane of the Be star is inclined with respect to the orbital plane in this system and that this inclination may be a factor in the unusual outburst behavior of the system.

Colleen. A. Wilson; Mark. H. Finger; M. J. Coe; Ignacio Negueruela

2002-11-06T23:59:59.000Z

424

Heat Pipe Performance Enhancement with Binary Mixture Fluids that Exhibit Strong Concentration Marangoni Effects  

E-Print Network (OSTI)

inclined, gravity-assisted, brass heat pipe with a 0.05M 2-inclined, gravity-assisted, brass heat pipe, with a 0.05M 2-Evaporator c Condenser Br Brass adia Adiabatic in input cold

Armijo, Kenneth Miguel

2011-01-01T23:59:59.000Z

425

Internal Wave Reflection and Scatter from Sloping Rough Topography  

Science Conference Proceedings (OSTI)

Internal gravity waves propagating in a uniformly stratified ocean are scattered on reflection from a rough inclined boundary. The boundary is inclined at angle ? to the horizontal and the roughness is represented by superimposed sinusoidal ...

S. A. Thorpe

2001-02-01T23:59:59.000Z

426

Shock Dynamics in Particle-Laden Thin Films  

E-Print Network (OSTI)

We present theory and experiments for thin film particle-laden flow on an incline. At higher particle concentration and inclination angle, a new phenomenon is observed in which a large particle-rich ridge forms at the ...

Dupuy, B.

2005-04-22T23:59:59.000Z

427

Dynamic stability experiment of Maglev systems  

DOE Green Energy (OSTI)

This paper presents dynamic stability experiments on maglev systems and compares with predictions calculated by a nonlinear dynamic computer code. Instabilities of an electrodynamic system (EDS)-type vehicle model were obtained from both experimental observations and computer simulations for a five-degree-of-freedom maglev vehicle moving on a guideway consisting of double L-shaped aluminum segments attached to a rotating wheel. The experimental and theoretical analyses developed in this study identify basic stability characteristics and future research needs of maglev systems.

Cai, Y.; Chen, S.S.; Zhu, S.; Rote, D.M.

1995-12-31T23:59:59.000Z

428

The Economic Value of PV and Net Metering to Residential Customers in California  

E-Print Network (OSTI)

from our 3. RESIDENTIAL ELECTRICITY RATES PG&E and SCE bothand SCE, the residential electricity rates have inclining

Darghouth, Naim

2010-01-01T23:59:59.000Z

429

Building and Fire Publications  

Science Conference Proceedings (OSTI)

... compact heat exchanger. Effect of Inclination on the Performance of a Compact Brazed Plate Condenser and Evaporator. ...

430

Transmission Electron Microscopy Study of Nonpolar a-Plane GaN Grown by Pendeo-Epitaxy on (112_0) 4H-SiC  

E-Print Network (OSTI)

by Pendeo-Epitaxy on (1120) 4H-SiC. D.N. Zakharov 1 , Z.phase epitaxy on (1120) 4H-SiC substrates with AlN bufferPE layers were grown on 4H- SiC (1120) substrates previously

Zakharov, D.N.; Liliental-Weber, Z.; Wagner, B.; Reitmeier, Z.J.; Preble, E.A.; Davis, R.F.

2008-01-01T23:59:59.000Z

431

Math 115 Final Exam Fall 2006 1. Consider the surface z = f(x, y) = 2x2 + y2. Find the tangent plane  

E-Print Network (OSTI)

/3 F. 7/11 G. 83/120 H. 7/13 8. 6% of Type A light bulbs are defective, 4% of Type B light bulbs are defective, and 2% of Type C light bulbs are defective. A light bulb is selected at random from a batch of light bulbs containing 50 Type A bulbs, 30 Type B bulbs, and 20 Type C bulbs. The selected bulb is found

432

Stabilization of highly polarized PbTiO[subscript 3] nanoscale capacitors due to in-plane symmetry breaking at the interface  

E-Print Network (OSTI)

Stable ferroelectric (FE) phases in nanometer-thick films would enable ultra-high density and fast FE field effect transistors (FeFETs), and the stability of ferroelectricity in ultrathin films has been under intense ...

Polanco, Miguel Angel Mendez

433

THE EFFECT OF A VERTICAL MAGNETIC FIELD ON THE PROPAGATION OF GRAVITY WAVES ALONG THE PLANE OF A SEMI-INFINITE VISCOUS, ELECTRICALLY CONDUCTING FLUID  

SciTech Connect

Basic equations and boundary conditions governing effects of vertical magnetic and gravitational fields on smallamplitude perturbations of the free equilibrium surfuce of a viscous, electrically conducting fluid are presented. Normal modes are examined. A dispersion relationship is derived which relates the complex "frequency" n of the normal mode to the Alfven velocity, V; the viscosity, v,; the magnetic diffusivity, lambda ; and the horizontal wave number, k. This dispersioh relationship is solved in nine extreme cases. In six of these, the magnetic field is too wesk to modify substantially the familiar gravity-wave solution holding in the absence of a magnetic field. The influence of the field is so strong in the remaining three cases that they have no parallel in the zero-field case. 0ne of these holds for any k if the magnetic field is sufficiently strong. In this case n = -gV/sup -1/( lambda /v)1/2i.e., the effect of the magnetic field is so great that the disturbance is attenuated aperiodically as the Alfven waves radiate energy away from the free surfuce. Another interesting feature demonstrated is the existence (if V is sufficiently large) of a band of wave numbers k for which no normal-mode solution exists. It is nevertheless demonstrated that the associated initialvalue problem can be solved for such values of k. In addition to the nine extreme cases mentioned above, three special cases are solved for all k for particular values of V, namely, v = lambda , v = 0, and lambda = 0. (auth)

Roberts, P.H.; Boardman, A.D.

1962-03-01T23:59:59.000Z

434

X-ray Investigation of Cleavage Plane of Single Layered Manganite La0.5Sr1.5MnO4  

Science Conference Proceedings (OSTI)

The top layer of a cleaved surface of the single layered manganite La{sub 0.5}Sr{sub 1.5}MnO{sub 4} is measured with crystal truncation rod scattering. Knowledge of the surface structure of strongly correlated electron systems is needed for nano-science and device application of such systems. The result shows that the cleaved surface is terminated by La/Sr layer and has little surface roughness.

Wakabayashi,Y.; Upton, M.; Grenier, S.; Hill, J.; Nelson, C.; Zheng, H.; Mitchell, J.

2007-01-01T23:59:59.000Z

435

Simple Solar Spectral Model for Direct and Diffuse Irradiance on Horizontal and Tilted Planes at the Earth's Surface for Cloudless Atmospheres  

Science Conference Proceedings (OSTI)

In a previous work, we described a simple model for calculating direct normal and diffuse horizontal spectral solar irradiance for cloudless sky conditions. In this paper, we present a new simple model (SPCTRAL2) that incorporates improvements to ...

Richard E. Bird; Carol Riordan

1986-01-01T23:59:59.000Z

436

FE Prediction of Bearing Capacity of Reinforced Soil under Plane Strain C.L. Nogueira, Federal University of Ouro Preto, Ouro Preto/MG, Brazil  

E-Print Network (OSTI)

, Federal University of Ouro Preto, Ouro Preto/MG, Brazil R.R.V. Oliveira, Federal University of Ouro Preto, Ouro Preto/MG, Brazil J.G. Zornberg, University of Texas at Austin, Austin/TX, USA R.F. Azevedo, Federal University of Viçosa, Viçosa/MG, Brazil ABSTRACT This paper presents a numerical simulation, using

Zornberg, Jorge G.

437

Simple solar spectral model for direct and diffuse irradiance on horizontal and tilted planes at the earth's surface for cloudless atmospheres  

DOE Green Energy (OSTI)

A new, simple model for calculating clear-sky direct and diffuse spectral irradiance on horizontal and tilted surfaces is presented. The model is based on previously reported simple algorithms and on comparisons with rigorous radiative transfer calculations and limited outdoor measurements. Equations for direct normal irradiance are outlined; and include: Raleigh scattering; aerosol scattering and absorption; water vapor absorption; and ozone and uniformly mixed gas absorption. Inputs to the model include solar zenith angle, collector tilt angle, atmospheric turbidity, amount of ozone and precipitable water vapor, surface pressure, and ground albedo. The model calculates terrestrial spectra from 0.3 to 4.0 ..mu..m with approximately 10 nm resolution. A major goal of this work is to provide researchers with the capability to calculate spectral irradiance for different atmospheric conditions and different collector geometries using microcomputers. A listing of the computer program is provided.

Bird, R.; Riordan, C.

1984-12-01T23:59:59.000Z

438

THE STRUCTURE OF GRAVITATIONALLY UNSTABLE GAS-RICH DISK GALAXIES  

Science Conference Proceedings (OSTI)

We use a series of idealized, numerical smoothed particle hydrodynamics simulations to study the formation and evolution of galactic, gas-rich disks forming from gas infall within dark matter halos. The temperature and density structure of the gas is varied in order to differentiate between (1) simultaneous gas infall at a large range of radii and (2) the inside-out buildup of a disk. In all cases, the disks go through phases of ring formation, gravitational instability and break-up into massive clumps. Ring formation can be enhanced by a focal point effect. The position of the ring is determined by the angular momentum distribution of the material it forms from. We study the ring and clump morphologies, the characteristic properties of the resulting velocity dispersion field and the effect of star formation. In the early phases, gas accretion leads to a high vertical velocity dispersion. We find that the disk fragmentation by gravitational instability and the subsequent clump-clump interactions drive high velocity dispersions mainly in the plane of the disk while at the same time the vertical velocity dispersion dissipates. The result is a strong variation of the line-of-sight velocity dispersion with inclination angle. For a face-on view, clumps appear as minima in the (vertical) dispersion, whereas for a more edge-on view, they tend to correspond to maxima. There exists observational evidence of a systematic variation of the velocity dispersion with inclination angle in high-redshift disks, which could be partly explained by our simulation results. Additional energetic sources to drive velocity dispersion that are not included in our models are also expected to contribute to the observational results.

Aumer, Michael; Burkert, Andreas; Johansson, Peter H. [Universitaets-Sternwarte Muenchen, Scheinerstr. 1, D-81679 Muenchen (Germany); Genzel, Reinhard, E-mail: aumer@usm.lmu.d, E-mail: burkert@usm.lmu.d, E-mail: pjohan@usm.lmu.d, E-mail: genzel@mpe.mpg.d [UC Berkeley Department of Physics, Berkeley, CA 94720 (United States)

2010-08-20T23:59:59.000Z

439

Multi-Objective Optimization of a Wrought Magnesium Alloy for High Strength and Ductility  

Science Conference Proceedings (OSTI)

An optimization technique is coupled with crystal plasticity based finite element (CPFE) computations to aid the microstructural design of a wrought magnesium alloy for improved strength and ductility. The initial microstructure consists of a collection of sub-micron sized grains containing deformation twins. The variables used in the simulations are crystallographic texture, and twin spacing within the grains. It is assumed that plastic deformation occurs mainly by dislocation slip on two sets of slip systems classified as hard and soft modes. The hard modes are those slip systems that are inclined to the twin planes and the soft mode consists of dislocation glide along the twin plane. The CPFE code calculates the stress-strain response of the microstructure as a function of the microstructural parameters and the length-scale of the features. A failure criterion based on a critical shear strain and a critical hydrostatic stress is used to define ductility. The optimization is based on the sequential generation of an initial population defined by the texture and twin spacing variables. The CPFE code and the optimizer are coupled in parallel so that new generations are created and analyzed dynamically. In each successive generation, microstructures that satisfy at least 90% of the mean strength and mean ductility in the current generation are retained. Multiple generation runs based on the above procedure are carried out in order to obtain maximum strength-ductility combinations. The implications of the computations for the design of a wrought magnesium alloy are discussed. Research sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U. S. Department of Energy.

Radhakrishnan, Balasubramaniam [ORNL; Gorti, Sarma B [ORNL; Patton, Robert M [ORNL; Simunovic, Srdjan [ORNL

2013-01-01T23:59:59.000Z

440

TWO MILLISECOND PULSARS DISCOVERED BY THE PALFA SURVEY AND A SHAPIRO DELAY MEASUREMENT  

SciTech Connect

We present two millisecond pulsar discoveries from the PALFA survey of the Galactic plane with the Arecibo telescope. PSR J1955+2527 is an isolated pulsar with a period of 4.87 ms, and PSR J1949+3106 has a period of 13.14 ms and is in a 1.9 day binary system with a massive companion. Their timing solutions, based on 4 years of timing measurements with the Arecibo, Green Bank, Nancay, and Jodrell Bank telescopes, allow precise determination of spin and astrometric parameters, including precise determinations of their proper motions. For PSR J1949+3106, we can clearly detect the Shapiro delay. From this we measure the pulsar mass to be 1.47{sup +0.43}{sub -0.31} M{sub Sun }, the companion mass to be 0.85{sup +0.14}{sub -0.11} M{sub Sun }, and the orbital inclination to be i = 79.9{sup -1.9}{sub +1.6} deg, where uncertainties correspond to {+-}1{sigma} confidence levels. With continued timing, we expect to also be able to detect the advance of periastron for the J1949+3106 system. This effect, combined with the Shapiro delay, will eventually provide very precise mass measurements for this system and a test of general relativity.

Deneva, J. S.; Camilo, F. [Arecibo Observatory, HC3 Box 53995, Arecibo, PR 00612 (United States); Freire, P. C. C.; Champion, D. J.; Desvignes, G. [Max-Planck-Institut fuer Radioastronomie, D-53121 Bonn (Germany); Cordes, J. M.; Brazier, A.; Chatterjee, S. [Astronomy Department, Cornell University, Ithaca, NY 14853 (United States); Lyne, A. G. [Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL (United Kingdom); Ransom, S. M. [National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States); Cognard, I. [Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, LPC2E, CNRS et Universite d'Orleans, and Station de radioastronomie de Nancay, Observatoire de Paris (France); Nice, D. J. [Department of Physics, Lafayette College, Easton, PA 18042 (United States); Stairs, I. H. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Allen, B. [Albert-Einstein-Institut, Max-Planck-Institut fuer Gravitationsphysik, D-30167 Hannover (Germany); Bhat, N. D. R. [Center for Astrophysics and Supercomputing, Swinburne University, Hawthorn, Victoria 3122 (Australia); Bogdanov, S. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Crawford, F. [Department of Physics and Astronomy, Franklin and Marshall College, P.O. Box 3003, Lancaster, PA 17604 (United States); Hessels, J. W. T. [ASTRON, Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA Dwingeloo (Netherlands); Jenet, F. A. [Center for Gravitational Wave Astronomy, University of Texas at Brownsville, Brownsville, TX 78520 (United States); Kaspi, V. M. [Department of Physics, McGill University, 3600 rue Universite, Montreal, QC H3A 2T8 (Canada); and others

2012-09-20T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Money and Inflation: A Functional Relationship NEWSLETTER  

E-Print Network (OSTI)

???Economists like to argue that money belongs in the same class as the wheel and inclined plane among ancient inventions of great social utility. Price stability allows that invention to work with minimal friction.? —Federal Reserve Chairman Ben S. Bernanke, February 24, 2006 In its broadest sense, money is anything generally accepted in exchange for goods and services. In other words, money is defined by the functions it serves in the economy. In fact, while money has taken many forms over the ages—cowry shells, furs, beads, even large stone wheels—useful forms of money share three basic functions. First, money is a store of value, which means that it holds its value over time. You can put money in a drawer today and spend it next year, when it will buy approximately the same amount of goods and services (minus inflation). Second, money is a unit of account, which means it is a standard measure of value. Listen to a conversation between two people about a recent purchase and you are sure to hear prices quoted in terms of money, not as hours worked or the equivalent value of the purchase in corn (or some other commodity). Third, money is a medium of exchange, which means it is generally accepted as a method of payment. I accept my paycheck in U.S. dollars because I know dollars are readily accepted for payment at the grocery

unknown authors

2013-01-01T23:59:59.000Z

442

Massive black hole pairs in clumpy, self-gravitating circumnuclear disks: stochastic orbital decay  

E-Print Network (OSTI)

We study the dynamics of massive black hole pairs in clumpy gaseous circumnuclear disks. We track the orbital decay of the light, secondary black hole M_{\\bullet2} orbiting around the more massive primary at the center of the disk, using N-body/SPH simulations. We find that the gravitational interaction of M_{\\bullet2} with massive clumps M_cl erratically perturbs the otherwise smooth orbital decay. In close encounters with massive clumps, gravitational slingshots can kick the secondary black hole out of the disk plane. The black hole moving on an inclined orbit then experiences the weaker dynamical friction of the stellar background, resulting in a longer orbital decay timescale. Interactions between clumps can also favor orbital decay when the black hole is captured by a massive clump which is segregating toward the center of the disk. The stochastic behavior of the black hole orbit emerges mainly when the ratio M_{\\bullet2}/M_cl falls below unity, with decay timescales ranging from ~1 to ~50 Myr. This sugg...

Colpi, Monica

2013-01-01T23:59:59.000Z

443

Collisional Particle Disks  

E-Print Network (OSTI)

We present a new, simple, fast algorithm to numerically evolve disks of inelastically colliding particles surrounding a central star. Our algorithm adds negligible computational cost to the fastest existing collisionless N-body codes, and can be used to simulate, for the first time, the interaction of planets with disks over many viscous times. Though the algorithm is implemented in two dimensions-i.e., the motions of bodies need only be tracked in a plane-it captures the behavior of fully three-dimensional disks in which collisions maintain inclinations that are comparable to random eccentricities. We subject the algorithm to a battery of tests for the case of an isolated, narrow, circular ring. Numerical simulations agree with analytic theory with regards to how particles' random velocities equilibrate; how the ring viscously spreads; and how energy dissipation, angular momentum transport, and material transport are connected. We derive and measure the critical value of the coefficient of restitution above which viscous stirring dominates inelastic damping and the particles' velocity dispersion runs away.

Yoram Lithwick; Eugene Chiang

2006-07-11T23:59:59.000Z

444

Extending the Model of KH 15D: Estimating the Effects of Forward Scattering and Curvature of the Occulting Ring Edge  

E-Print Network (OSTI)

The periodic eclipses of the pre-main-sequence binary, KH 15D, have been explained by a circumbinary dust ring inclined to the orbital plane, which causes occultations of the stars as they pass behind the ring edge. We compute the extinction and forward scattering of light by the edge of the dust ring to explain (1) the gradual slope directly preceding total eclipse, (2) the gradual decline at the end of ingress, and (3) the slight rise in flux at mid-eclipse. The size of the forward scattering halo indicates that the dust grains have a radius of a ~ 6 (D/3 AU) microns, where D is the distance of the edge of the ring from the system barycenter. This dust size estimate agrees well with estimates of the dust grain size from polarimetry, adding to the evidence that the ring lies at several AU. Finally, the ratio of the fluxes inside and outside eclipse independently indicates that the ring lies at a few astronomical units.

D. W. Silvia; E. Agol

2008-03-31T23:59:59.000Z

445

THE OBLIQUE ORBIT OF THE SUPER-NEPTUNE HAT-P-11b  

SciTech Connect

We find the orbit of the Neptune-sized exoplanet HAT-P-11b to be highly inclined relative to the equatorial plane of its host star. This conclusion is based on spectroscopic observations of two transits, which allowed the Rossiter-McLaughlin effect to be detected with an amplitude of 1.5 m s{sup -1}. The sky-projected obliquity is 103{sup +26} {sub -10} deg. This is the smallest exoplanet for which spin-orbit alignment has been measured. The result favors a migration scenario involving few-body interactions followed by tidal dissipation. This finding also conforms with the pattern that the systems with the weakest tidal interactions have the widest spread in obliquities. We predict that the high obliquity of HAT-P-11 will be manifest in transit light curves from the Kepler spacecraft: starspot-crossing anomalies will recur at most once per stellar rotation period, rather than once per orbital period as they would for a well-aligned system.

Winn, Joshua N.; Albrecht, Simon [Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Johnson, John Asher [Department of Astrophysics, and NASA Exoplanet Science Institute, California Institute of Technology, MC 249-17, Pasadena, CA 91125 (United States); Howard, Andrew W. [Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720 (United States); Marcy, Geoffrey W.; Isaacson, Howard [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Shporer, Avi [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Santa Barbara, CA 93117 (United States); Bakos, Gaspar A.; Hartman, Joel D. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States)

2010-11-10T23:59:59.000Z

446

Illumination of interior spaces by bended hollow light guides: Application of the theoretical light propagation method  

SciTech Connect

To ensure comfort and healthy conditions in interior spaces the thermal, acoustics and daylight factors of the environment have to be considered in the building design. Due to effective energy performance in buildings the new technology and applications also in daylight engineering are sought such as tubular light guides. These allow the transport of natural light into the building core reducing energy consumption. A lot of installations with various geometrical and optical properties can be applied in real buildings. The simplest set of tubular light guide consists of a transparent cupola, direct tube with high reflected inner surface and a ceiling cover or diffuser redistributing light into the interior. Such vertical tubular guide is often used on flat roofs. When the roof construction is inclined a bend in the light guide system has to be installed. In this case the cupola is set on the sloped roof which collects sunlight and skylight from the seen part of the sky hemisphere as well as that reflected from the ground and opposite facades. In comparison with the vertical tube some additional light losses and distortions of the propagated light have to be expected in bended tubular light guides. Recently the theoretical model of light propagation was already published and its applications are presented in this study solving illuminance distributions on the ceiling cover interface and further illuminance distribution on the working plane in the interior. (author)

Darula, Stanislav; Kocifaj, Miroslav; Kittler, Richard [ICA, Slovak Academy of Sciences, Bratislava (Slovakia); Kundracik, Frantisek [Department of Experimental Physics, FMPI, Comenius University, Bratislava (Slovakia)

2010-12-15T23:59:59.000Z

447

Steady states and linear stability analysis of precipitation pattern formation at geothermal hot springs  

E-Print Network (OSTI)

A dynamical theory of geophysical precipitation pattern formation is presented and applied to irreversible calcium carbonate (travertine) deposition. Specific systems studied here are the terraces and domes observed at geothermal hot springs, such as those at Yellowstone National Park, and speleothems, particularly stalactites and stalagmites. The theory couples the precipitation front dynamics with shallow water flow, including corrections for turbulent drag and curvature effects. In the absence of capillarity and with a laminar flow profile, the theory predicts a one-parameter family of steady state solutions to the moving boundary problem describing the precipitation front. These shapes match well the measured shapes near the vent at the top of observed travertine domes. Closer to the base of the dome, the solutions deviate from observations, and circular symmetry is broken by a fluting pattern, which we show is associated with capillary forces causing thin film break-up. We relate our model to that recently proposed for stalactite growth, and calculate the linear stability spectrum of both travertine domes and stalactites. Lastly, we apply the theory to the problem of precipitation pattern formation arising from turbulent flow down an inclined plane, and identify a linear instability that underlies scale-invariant travertine terrace formation at geothermal hot springs.

Pak Yuen Chan; Nigel Goldenfeld

2007-06-21T23:59:59.000Z

448

Enhancing Price Response Programs through Auto-DR: California's 2007 Implementation Experience  

E-Print Network (OSTI)

that a larger number of customers would be inclined toAuto-DR to customers. GEP held a number of TC training

Wikler, Greg

2008-01-01T23:59:59.000Z

449

The Impact of Rate Design and Net Metering on the Bill Savings from Distributed PV for Residential Customers in California  

E-Print Network (OSTI)

Residential Electricity Rates..2.1.1. Current Residential Electricity Rates PG&E and SCESCE, current residential electricity rates have inclining

Darghouth, Naim

2010-01-01T23:59:59.000Z

450

LS-144 M. Choi  

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

4 M. Choi Nov., 1989 The Effects of Photon Spectrurn and Variable Thermal Conductivity on the Distribution of Telllperature in an Inclined Plate Crotch Absorber 1 INTRODUCTION...

451

STRUCTURE AND PROPERTIES OF INTERNAL INTERFACES: IV ...  

Science Conference Proceedings (OSTI)

The relationship between inclination dependence of the GB energy and the ... grain boundary carbide precipitates were revealed as very discretely distributed in ...

452

Public Geology at Griffith Park in Los Angeles: A Sample Teachers’ Guide  

E-Print Network (OSTI)

Dipping beds of the Monterey formation in Griffith Park. [Figure 7. Listed as Monterey formation on the Dibblee map,as are the Monterey and Fernando Formations. Inclined

Helman, Daniel S

2012-01-01T23:59:59.000Z

453

NEWTON, Ask a Scientist at Argonne National Labs  

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

could be researched if you are so inclined. They form the basis for understanding transformers, generators, electric motors and more I hope this helps. Jerry Gardner Hari,...

454

Sierra Nevada Partners | Open Energy Information  

Open Energy Info (EERE)

Place Incline Village, Nevada Zip 89450 Sector Renewable Energy, Solar Product Investment firm actively seeking acquisitions in renewable energy, in particular, solar in the...

455

More Southern African Data Sets Released  

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

data, including leaf area index (LAI), leaf inclination angle, leaf spectral data, plant area index (PAI), and canopy structure data for sites along the Kalahari Transect in...

456

Studies on upward flame spread  

E-Print Network (OSTI)

5.7 Flame Heights . . . . . . . . . . . . . . . . . .3.4.1 Flame Heights . . . . . . . . . . . . . . 3.5Chapter 4 Upward Flame Spread of an Inclined Fuel Surface

Gollner, Michael J.

2012-01-01T23:59:59.000Z

457

MEASUREMENT OF SPIN-ORBIT MISALIGNMENT AND NODAL PRECESSION FOR THE PLANET AROUND PRE-MAIN-SEQUENCE STAR PTFO 8-8695 FROM GRAVITY DARKENING  

SciTech Connect

PTFO 8-8695b represents the first transiting exoplanet candidate orbiting a pre-main-sequence star (van Eyken et al. 2012, ApJ, 755, 42). We find that the unusual lightcurve shapes of PTFO 8-8695 can be explained by transits of a planet across an oblate, gravity-darkened stellar disk. We develop a theoretical framework for understanding precession of a planetary orbit's ascending node for the case when the stellar rotational angular momentum and the planetary orbital angular momentum are comparable in magnitude. We then implement those ideas to simultaneously and self-consistently fit two separate lightcurves observed in 2009 December and 2010 December. Our two self-consistent fits yield M{sub p} = 3.0 M{sub Jup} and M{sub p} = 3.6 M{sub Jup} for assumed stellar masses of M{sub *} = 0.34 M{sub Sun} and M{sub *} = 0.44 M{sub Sun} respectively. The two fits have precession periods of 293 days and 581 days. These mass determinations (consistent with previous upper limits) along with the strength of the gravity-darkened precessing model together validate PTFO 8-8695b as just the second hot Jupiter known to orbit an M-dwarf. Our fits show a high degree of spin-orbit misalignment in the PTFO 8-8695 system: 69 Degree-Sign {+-} 2 Degree-Sign or 73. Degree-Sign 1 {+-} 0. Degree-Sign 5, in the two cases. The large misalignment is consistent with the hypothesis that planets become hot Jupiters with random orbital plane alignments early in a system's lifetime. We predict that as a result of the highly misaligned, precessing system, the transits should disappear for months at a time over the course of the system's precession period. The precessing, gravity-darkened model also predicts other observable effects: changing orbit inclination that could be detected by radial velocity observations, changing stellar inclination that would manifest as varying vsin i, changing projected spin-orbit alignment that could be seen by the Rossiter-McLaughlin effect, changing transit shapes over the course of the precession, and differing lightcurves as a function of wavelength. Our measured planet radii of 1.64 R{sub Jup} and 1.68 R{sub Jup} in each case are consistent with a young, hydrogen-dominated planet that results from a ''hot-start'' formation mechanism.

Barnes, Jason W. [Department of Physics, University of Idaho, Moscow, ID 83844-0903 (United States); Van Eyken, Julian C. [Department of Physics, University of California Santa Barbara, Santa Barbara, CA 93106-9530 (United States); Jackson, Brian K. [Carnegie Institution of Washington, DTM, 5241 Broad Branch Road, NW Washington, DC 20015-1305 (United States); Ciardi, David R. [NASA Exoplanet Science Institute, Caltech M/S 100-22, Pasadena, CA 91125 (United States); Fortney, Jonathan J., E-mail: jwbarnes@uidaho.edu [Department of Astronomy, University of California Santa Cruz, Santa Cruz, CA 95064 (United States)

2013-09-01T23:59:59.000Z

458

Dual-keel electrodynamic maglev system  

DOE Patents (OSTI)

A propulsion and stabilization system with a plurality of superconducting magnetic devices affixed to the dual-keels of a vehicle, where the superconducting magnetic devices produce a magnetic field when energized. The system also includes a plurality of figure-eight shaped null-flux coils affixed to opposing vertical sides of slots in a guideway. The figure-eight shaped null-flux coils are vertically oriented, laterally cross-connected in parallel, longitudinally connected in series, and continue the length of the vertical slots providing levitation and guidance force. An external power source energizes the figure-eight shaped null-flux coils to create a magnetic traveling wave that interacts with the magnetic field produced by the superconducting magnets to impart motion to the vehicle.

He, J.; Wang, Z.; Rote, D.M.; Coffey, H.T.; Hull, J.R.; Mulcahy, T.M.; Cai, Y.

1995-12-31T23:59:59.000Z

459

Transportation in the twenty-first century  

Science Conference Proceedings (OSTI)

New energy-efficient and environmentally-sound magnetically levitated (maglev) transportation systems are being developed that have the potential to supplement and extend the intercity portion of our transportation system, and to alleviate part of the commuter congestion on our highways. Prototype passenger-carrying maglev vehicles are now operating in Japan and Germany. The capabilities of these systems, described in science fiction over two decades ago, are no longer speculative. They will be capable of transporting 100--150 passengers per vehicles or 1500 passengers per train at speeds of 250--350 mph. While performing many of the same functions of short-haul aircraft, these electrically powered vehicles: do not emit pollutants along the route; use about 1/3 the energy per passenger mile of modern aircraft; do not contact the guideway and therefore minimize maintenance; are silent except for the noise of air passing over the body. This paper assesses current maglev technology. 7 refs., 5 figs.

Coffey, H.T.

1991-12-01T23:59:59.000Z

460

Transportation in the twenty-first century  

Science Conference Proceedings (OSTI)

New energy-efficient and environmentally-sound magnetically levitated (maglev) transportation systems are being developed that have the potential to supplement and extend the intercity portion of our transportation system, and to alleviate part of the commuter congestion on our highways. Prototype passenger-carrying maglev vehicles are now operating in Japan and Germany. The capabilities of these systems, described in science fiction over two decades ago, are no longer speculative. They will be capable of transporting 100--150 passengers per vehicles or 1500 passengers per train at speeds of 250--350 mph. While performing many of the same functions of short-haul aircraft, these electrically powered vehicles: do not emit pollutants along the route; use about 1/3 the energy per passenger mile of modern aircraft; do not contact the guideway and therefore minimize maintenance; are silent except for the noise of air passing over the body. This paper assesses current maglev technology. 7 refs., 5 figs.

Coffey, H.T.

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "guideways inclined plane" 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

Workshop on technology issues of superconducting Maglev transportation systems  

DOE Green Energy (OSTI)

There exists a critical need in the United States to improve its ground transportation system. One suggested system that offers many advantages over the current transportation infrastructure is Maglev. Maglev represents the latest evolution in very high and speed ground transportation, where vehicles are magnetically levitated, guided, and propelled over elevated guideways at speeds of 300 miles per hour. Maglev is not a new concept but is, however, receiving renewed interest. The objective of this workshop was to further promote these interest by bringing together a small group of specialists in Maglev technology to discuss Maglev research needs and to identify key research issues to the development of a successful Maglev system. The workshop was organized into four sessions based on the following technical areas: Materials, Testing, and Shielding; Magnet Design and Cryogenic Systems; Propulsion and Levitation Systems; and, System Control and Integration.

Wegrzyn, J.E. (Brookhaven National Lab., Upton, NY (United States)); Shaw, D.T. (New York State Inst. of Superconductivity, Buffalo, NY (United States))

1991-09-27T23:59:59.000Z

462

Dual-keel electrodynamic maglev system  

DOE Patents (OSTI)

A propulsion and stabilization system is disclosed with a plurality of superconducting magnetic devices affixed to the dual-keels of a vehicle, where the superconducting magnetic devices produce a magnetic field when energized. The system also includes a plurality of figure-eight shaped null-flux coils affixed to opposing vertical sides of slots in a guideway. The figure-eight shaped null-flux coils are vertically oriented, laterally cross-connected in parallel, longitudinally connected in series, and continue the length of the vertical slots providing levitation and guidance force. An external power source energizes the figure-eight shaped null-flux coils to create a magnetic traveling wave that interacts with the magnetic field produced by the superconducting magnets to impart motion to the vehicle. 6 figs.

He, J.L.; Wang, Z.; Rote, D.M.; Coffey, H.T.; Hull, J.R.; Mulcahy, T.M.; Cal, Y.

1996-12-24T23:59:59.000Z

463

Instrument for the application of controlled mechanical loads to tissues in sterile culture  

DOE Patents (OSTI)

Apparatus and methods are disclosed facilitating the application of forces and measurement of dimensions of a test subject. In one arrangement the test subject is coupled to a forcing frame and controlled forces applied thereto by a series of guideways and sliders. The sliders, which contact the test subject are in force transmitting relation to a forcing frame. Tension, compression and bending forces can be applied to the test subject. Force applied to the test subject is measured and controlled. A dimensional characteristic of the test subject, such as growth, is measured by a linear variable differential transformer. The growth measurement data can be used to control the force applied. Substantially uniaxial stretching is achieved by placing the test subject on an elastic membrane stretched by an arrangement of members securing the elastic member to the forcing frame. 8 figs.

Lintilhac, P.M.; Vesecky, T.B.

1995-04-18T23:59:59.000Z

464

Instrument for the application of controlled mechanical loads to tissues in sterile culture  

DOE Patents (OSTI)

Apparatus and methods are disclosed facilitating the application of forces and measurement of dimensions of a test subject. In one arrangement the test subject is coupled to a forcing frame and controlled forces applied thereto by a series of guideways and sliders. The sliders, which contact the test subject are in force transmitting relation to a forcing frame. Tension, compression and bending forces can be applied to the test subject. Force applied to the test subject is measured and controlled. A dimensional characteristic of the test subject, such as growth, is measured by a linear variable differential transformer. The growth measurement data can be used to control the force applied. Substantially uniaxial stretching is achieved by placing the test subject on an elastic membrane stretched by an arrangement of members securing the elastic member to the forcing frame.

Lintilhac, Phillip M. (Shelburne, VT); Vesecky, Thompson B. (Essex Junction, VT)

1995-01-01T23:59:59.000Z

465

Freight Shuttle System: Cross-Border Movement of Goods  

SciTech Connect

The Freight Shuttle System (FSS) is designed to provide freight transportation services between those short and intermediate distance locations (within 600 miles) that are currently handling large volumes of freight traffic. Much like trucks, the FSS's transporters are autonomous: each transporter has its own propulsion and travels independently of other transporters. Inspired by railroads, each FSS transporter has steel wheels operating on a steel running surface and can carry either a standardsize freight container or an over-the-road truck trailer. However, unlike either rail or trucks, the FSS runs on an elevated, dedicated guideway to avoid the interference of other transportation systems. The objective of this report is to examine the potential viability for an alternative transportation system for trailers and containers in a multi-national, cross-border setting. The El Paso-Ciudad Juarez region serves as the environment of this analysis.

None

2011-05-31T23:59:59.000Z

466

Chiral objects do not have an internal mirror plane. A simple example of a chiral object is a (winking) smiley, see Figure S1. If the smiley winks (right) it cannot be superimposed on  

E-Print Network (OSTI)

drop or film contactor ? Uniform, well-defined slug size High specific interfacial area Enhanced mass-liquid slug flow (Present Work) 850 - 2600Centrifugal Extractor 35 - 1500Impinging Stream Extractor 280Impinging Streams 175 ­ 250Rotating disk Impinging Streams contactor 150 ­ 250Mixer-settler 0.5 ­ 190

Groningen, Rijksuniversiteit

467

Fuzzy probability measures (FPM) based non-symmetric membership function: Engineering examples of ground subsidence due to underground mining  

Science Conference Proceedings (OSTI)

This paper introduces a new FPM method for prediction of surface subsidence due to inclined coal seam mining. Based on the non-symmetric membership function and the definition of the fuzzy probability measure, the mathematical model for the two-dimensional ... Keywords: Fuzzy probability measures, Ground subsidence, Inclined coal seam, Non-symmetric membership function, Underground mining

Wen-Xiu Li; Lin Liu; Lan-Fang Dai

2010-04-01T23:59:59.000Z

468

Tube support  

Science Conference Proceedings (OSTI)

A tube support for supporting horizontal tubes from an inclined vertical support tube passing between the horizontal tubes. A support button is welded to the vertical support tube. Two clamping bars or plates, the lower edges of one bearing on the support button, are removably bolted to the inclined vertical tube. The clamping bars provide upper and lower surface support for the horizontal tubes.

Mullinax, Jerry L. (Green Township, Summit County, OH)

1988-01-01T23:59:59.000Z

469

Gravity settling  

DOE Patents (OSTI)

Solids are separated from a liquid in a gravity settler provided with inclined solid intercepting surfaces to intercept the solid settling path to coalesce the solids and increase the settling rate. The intercepting surfaces are inverted V-shaped plates, each formed from first and second downwardly inclined upwardly curved intersecting conical sections having their apices at the vessel wall.

Davis, Hyman R. (Glenridge, NJ); Long, R. H. (Morristown, NJ); Simone, A. A. (Dover, NJ)

1979-01-01T23:59:59.000Z

470

Route profile analysis system and method  

DOE Patents (OSTI)

A system for recording terrain profile information is disclosed. The system accurately senses incremental distances traveled by a vehicle along with vehicle inclination, recording both with elapsed time. The incremental distances can subsequently be differentiated with respect to time to obtain acceleration. The computer acceleration can then be used to correct the sensed inclination.

Mullenhoff, D.J.; Wilson, S.W.

1982-07-29T23:59:59.000Z

471

An experimental study of the flow and heat transfer between enhanced heat transfer plates for PHEs  

Science Conference Proceedings (OSTI)

The flow and heat transfer between inclined discrete rib plates for plate heat exchangers have been experimentally studied. Dye injection method is used to visualize the flow structures. The visualization results show that front vortex, rear vortex and main vortex are formed between the plates. The rib parameter influence is also studied using visualization method. The pressure drop and heat transfer between the inclined discrete rib plates as well as that between inclined continuous rib plates and smooth plates are also measured. The measured results show that the inclined discrete rib plate can enhanced heat transfer 20-25% at the same pumping power compared with the commonly used inclined continuous rib plates. (author)

Li, Xiao-wei [Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China); Meng, Ji-an; Li, Zhi-xin [School of Aerospace, Tsinghua University, Beijing 100084 (China)

2010-11-15T23:59:59.000Z

472

On the oscillations in Mercury's obliquity  

E-Print Network (OSTI)

One major objective of MESSENGER and BepiColombo spatial missions is to accurately measure Mercury's rotation and its obliquity in order to obtain constraints on internal structure of the planet. Which is the obliquity's dynamical behavior deriving from a complete spin-orbit motion of Mercury simultaneously integrated with planetary interactions? We have used our SONYR model integrating the spin-orbit N-body problem applied to the solar System (Sun and planets). For lack of current accurate observations or ephemerides of Mercury's rotation, and therefore for lack of valid initial conditions for a numerical integration, we have built an original method for finding the libration center of the spin-orbit system and, as a consequence, for avoiding arbitrary amplitudes in librations of the spin-orbit motion as well as in Mercury's obliquity. The method has been carried out in two cases: (1) the spin-orbit motion of Mercury in the 2-body problem case (Sun-Mercury) where an uniform precession of the Keplerian orbital plane is kinematically added at a fixed inclination (S2K case), (2) the spin-orbit motion of Mercury in the N-body problem case (Sun and planets) (Sn case). We find that the remaining amplitude of the oscillations in the Sn case is one order of magnitude larger than in the S2K case, namely 4 versus 0.4 arcseconds (peak-to-peak). The mean obliquity is also larger, namely 1.98 versus 1.80 arcminutes, for a difference of 10.8 arcseconds. These theoretical results are in a good agreement with recent radar observations but it is not excluded that it should be possible to push farther the convergence process by drawing nearer still more precisely to the libration center.

E. Bois; N. Rambaux

2007-09-07T23:59:59.000Z

473

CONSTRAINTS ON THE MAGELLANIC CLOUDS' INTERACTION FROM THE DISTRIBUTION OF OB STARS AND THE KINEMATICS OF GIANTS  

SciTech Connect

Young, OB-type candidates are identified in a {approx}7900 deg{sup 2} region encompassing the Large and Small Magellanic Clouds (LMC/SMC) periphery, the Bridge, part of the Magellanic Stream (MS), and Leading Arm (LA). Selection is based on UV, optical, and IR photometry from existing large-area surveys and proper motions from the Southern Proper Motion 4 (SPM4) catalog. The spatial distribution of these young star candidates shows (1) a well-populated SMC wing which continues westward with two branches partially surrounding the SMC, (2) a rather narrow path from the SMC wing eastward toward the LMC which is offset by 1 Degree-Sign -2 Degree-Sign from the high-density H I ridge in the Bridge, (3) a well-populated periphery of the LMC dominated by clumps of stars at the ends of the LMC bar, and (4) a few scattered candidates in the MS and two overdensities in the LA regions above and below the Galactic plane. Additionally, a proper-motion analysis is made of a radial-velocity-selected sample of red giants and supergiants in the LMC, previously shown to be a kinematically and chemically distinct subgroup, most likely captured from the SMC. SPM4 proper motions of these stars also indicate they are distinct from the LMC population. The observational results presented here, combined with the known orbits of the Clouds and other aspects of the LMC morphology, suggest an off-center, moderate to highly inclined collision between the SMC and the LMC's disk that took place between 100 and 200 Myr ago.

Casetti-Dinescu, Dana I.; Girard, Terrence M.; Van Altena, William F. [Astronomy Department, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Vieira, Katherine, E-mail: dana.casetti@yale.edu, E-mail: terry.girard@yale.edu, E-mail: william.vanaltena@yale.edu, E-mail: kvieira@cida.ve [Centro de Investigaciones de Astronomia, Apartado Postal 264, Merida 5101-A (Venezuela, Bolivarian Republic of)

2012-07-10T23:59:59.000Z

474

The XEUS Mission  

E-Print Network (OSTI)

XEUS, the X-ray Evolving Universe Spectroscopy mission, is at present an ESA-ISAS initiative for the study of the evolution of the hot Universe in the post-Chandra/XMM-Newton era. The key science objectives of XEUS are: Search for the origin, and subsequent study of growth, of the first massive black holes in the early Universe; assessment of the formation of the first gravitationally bound dark matter dominated systems and their evolution; study of the evolution of metal synthesis up till the present epoch; characterization of the true intergalactic medium. To reach these ambitious science goals the two salient characteristics of the XEUS observatory entail: (1) Its effective spectroscopic grasp, combining a sensitive area > 20 m^2 below 2 keV with a spectral resolution better than 2 eV. This allows significant detection of the most prominent X-ray emission lines (e.g. O-VII, Si-XIII and Fe-XXV) in cosmologically distant sources against the sky background; (2) Its angular resolving power, between 2 and 5 arc seconds, to minimize source confusion as well as noise due to the galactic X-ray foreground emission. To accommodate these instrument requirements a mission concept has been developed featuring an X-ray telescope of 50-m focal length, comprising two laser-locked (separate) mirror and detector spacecraft's. The telescope is injected in a low earth orbit with an inclination commensurate with the ISS. At present an on-orbit growth of the mirror spacecraft is foreseen with the aid of the ISS, raising the mirror diameter from 4.5 to 10 m. The detector spacecraft will be replaced at 5 year intervals after run-out of consumables with an associated upgrade of the focal plane package.

Johan Bleeker; Mariano Mendez

2002-07-12T23:59:59.000Z

475

CORONAL LOOP OSCILLATIONS OBSERVED WITH ATMOSPHERIC IMAGING ASSEMBLY-KINK MODE WITH CROSS-SECTIONAL AND DENSITY OSCILLATIONS  

Science Conference Proceedings (OSTI)

A detailed analysis of a coronal loop oscillation event is presented, using data from the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory (SDO) for the first time. The loop oscillation event occurred on 2010 October 16, 19:05-19:35 UT and was triggered by an M2.9 GOES-class flare, located inside a highly inclined cone of a narrow-angle coronal mass ejection. This oscillation event had a number of unusual features: (1) excitation of kink-mode oscillations in vertical polarization (in the loop plane), (2) coupled cross-sectional and density oscillations with identical periods, (3) no detectable kink amplitude damping over the observed duration of four kink-mode periods (P=6.3 minutes), (4) multi-loop oscillations with slightly ({approx}10%) different periods, and (5) a relatively cool loop temperature of T {approx} 0.5 MK. We employ a novel method of deriving the electron density ratio external and internal to the oscillating loop from the ratio of Alfvenic speeds deduced from the flare trigger delay and the kink-mode period, i.e., n{sub e} /n{sub i} = (v{sub A} /v{sub Ae}){sup 2} = 0.08 {+-} 0.01. The coupling of the kink mode and cross-sectional oscillations can be explained as a consequence of the loop length variation in the vertical polarization mode. We determine the exact footpoint locations and loop length with stereoscopic triangulation using STEREO/EUVI/A data. We model the magnetic field in the oscillating loop using Helioseismic and Magnetic Imager/SDO magnetogram data and a potential-field model and find agreement with the seismological value of the magnetic field, B{sub kink} = 4.0 {+-} 0.7 G, within a factor of two.

Aschwanden, Markus J.; Schrijver, Carolus J., E-mail: aschwanden@lmsal.com [Lockheed Martin Advanced Technology Center, Solar and Astrophysics Laboratory, Org. ADBS, Bldg. 252, 3251 Hanover St., Palo Alto, CA 94304 (United States)

2011-08-01T23:59:59.000Z

476

Radiation for Hodgkin's Lymphoma in Young Female Patients: A New Technique to Avoid the Breasts and Decrease the Dose to the Heart  

SciTech Connect

Purpose: To demonstrate how, in young female patients with Hodgkin's lymphoma, using an inclined board technique can further decrease the volume of breasts and heart in the treatment field. Methods and Materials: An inclined board was constructed with the ability to mount an Aquaplast face mask, a Vacu-Lock, and a hip stopper. Eight female patients with early-stage Hodgkin's lymphoma were planned and compared using the conventional flat position and the inclined board position. All patients on the inclined board were planned with 90{sup o} degree table position and 15{sup o} gantry angle rotation to compensate for the beam divergence resulting from the patient's position on the inclined board. Dose-volume histograms were generated, as well as the mean V30 and V5 of both breasts and heart using both treatment positions. Results: The mean value of V30 of the right breast, left breast, and heart decreased from 3%, 3%, and 13%, respectively, using the flat position to 0, 0.4%, and 5%, respectively, using the inclined board. The mean value of V5 of the right breast, left breast, and heart decreased from 6%, 13%, and 36%, respectively, using the flat position to 2%, 8%, and 29%, respectively, using the inclined board. Conclusions: Compared with conventional flat positioning, this simple device and technique allows better sparing of the breasts and the heart while maintaining comparable target coverage and total lung dose.

Dabaja, Bouthaina S., E-mail: bdabaja@mdanderson.or [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Rebueno, Neal C.S.; Mazloom, Ali; Thorne, Scott; Perrin, Kelly J.; Tolani, Naresh; Das, Pragnan; Delclos, Marc E.; Iyengar, Puneeth; Reed, Valerie K.; Horace, Patrecia; Salehpour, Mohammad R. [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States)

2011-02-01T23:59:59.000Z

477

Multi-position photovoltaic assembly  

Science Conference Proceedings (OSTI)

The invention is directed to a PV assembly, for use on a support surface, comprising a base, a PV module, a multi-position module support assembly, securing the module to the base at shipping and inclined-use angles, a deflector, a multi-position deflector support securing the deflector to the base at deflector shipping and deflector inclined-use angles, the module and deflector having opposed edges defining a gap therebetween. The invention permits transport of the PV assemblies in a relatively compact form, thus lowering shipping costs, while facilitating installation of the PV assemblies with the PV module at the proper inclination.

Dinwoodie, Thomas L. (Piedmont, CA)

2003-03-18T23:59:59.000Z

478

Heat Transfer in Complex Fluids  

SciTech Connect

Amongst the most important constitutive relations in Mechanics, when characterizing the behavior of complex materials, one can identify the stress tensor T, the heat flux vector q (related to heat conduction) and the radiant heating (related to the radiation term in the energy equation). Of course, the expression 'complex materials' is not new. In fact, at least since the publication of the paper by Rivlin & Ericksen (1955), who discussed fluids of complexity (Truesdell & Noll, 1992), to the recently published books (Deshpande et al., 2010), the term complex fluids refers in general to fluid-like materials whose response, namely the stress tensor, is 'non-linear' in some fashion. This non-linearity can manifest itself in variety of forms such as memory effects, yield stress, creep or relaxation, normal-stress differences, etc. The emphasis in this chapter, while focusing on the constitutive modeling of complex fluids, is on granular materials (such as coal) and non-linear fluids (such as coal-slurries). One of the main areas of interest in energy related processes, such as power plants, atomization, alternative fuels, etc., is the use of slurries, specifically coal-water or coal-oil slurries, as the primary fuel. Some studies indicate that the viscosity of coal-water mixtures depends not only on the volume fraction of solids, and the mean size and the size distribution of the coal, but also on the shear rate, since the slurry behaves as shear-rate dependent fluid. There are also studies which indicate that preheating the fuel results in better performance, and as a result of such heating, the viscosity changes. Constitutive modeling of these non-linear fluids, commonly referred to as non-Newtonian fluids, has received much attention. Most of the naturally occurring and synthetic fluids are non-linear fluids, for example, polymer melts, suspensions, blood, coal-water slurries, drilling fluids, mud, etc. It should be noted that sometimes these fluids show Newtonian (linear) behavior for a given range of parameters or geometries; there are many empirical or semi-empirical constitutive equations suggested for these fluids. There have also been many non-linear constitutive relations which have been derived based on the techniques of continuum mechanics. The non-linearities oftentimes appear due to higher gradient terms or time derivatives. When thermal and or chemical effects are also important, the (coupled) momentum and energy equations can give rise to a variety of interesting problems, such as instability, for example the phenomenon of double-diffusive convection in a fluid layer. In Conclusion, we have studied the flow of a compressible (density gradient type) non-linear fluid down an inclined plane, subject to radiation boundary condition. The heat transfer is also considered where a source term, similar to the Arrhenius type reaction, is included. The non-dimensional forms of the equations are solved numerically and the competing effects of conduction, dissipation, heat generation and radiation are discussed. It is observed that the velocity increases rapidly in the region near the inclined surface and is slower in the region near the free surface. Since R{sub 7} is a measure of the heat generation due to chemical reaction, when the reaction is frozen (R{sub 7}=0.0) the temperature distributions would depend only on R{sub 1}, and R{sub 2}, representing the effects of the pressure force developed in the material due to the distribution, R{sub 3} and R{sub 4} viscous dissipation, R{sub 5} the normal stress coefficient, R{sub 6} the measure of the emissivity of the particles to the thermal conductivity, etc. When the flow is not frozen (RP{sub 7} > 0) the temperature inside the flow domain is much higher than those at the inclined and free surfaces. As a result, heat is transferred away from the flow toward both the inclined surface and the free surface with a rate that increases as R{sub 7} increases. For a given temperature, an increase in {zeta} implies that the activation energy is smaller and thus, the reaction ra

Mehrdad Massoudi

2012-01-01T23:59:59.000Z

479

Browse wiki | Open Energy Information  

Open Energy Info (EERE)

reservoir at 1 - 1.5 km depth, intersected by steeply inclined fissures which carry steam and gas to the well bores, and to the natural fumaroles. A substantial decline in the...

480

LS-138  

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

LS-138 Mansaa thai June is, 1989 (wrev. 102489) A Note on Thermal Anlysis for an Inclined Plate Crotch Absorber 1 INTRODUCTION Crotch absorbers are used to absorb unwanted...

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481

Catalytic hydrogenation process and apparatus with improved vapor liquid separation  

DOE Patents (OSTI)

A continuous hydrogenation process and apparatus wherein liquids are contacted with hydrogen in an ebullated catalyst reaction zone with the liquids and gas flowing vertically upwardly through that zone into a second zone substantially free of catalyst particles and wherein the liquid and gases are directed against an upwardly inclining surface through which vertical conduits are placed having inlet ends at different levels in the liquid and having outlet ends at different levels above the inclined surface, such that vapor-rich liquid is collected and discharged through conduits terminating at a higher level above the inclined surface than the vapor-poor liquid which is collected and discharged at a level lower than the inclined surface.

Chervenak, Michael C. (Pennington, NJ); Comolli, Alfred G. (Trenton, NJ)

1980-01-01T23:59:59.000Z

482

Journal of Research Volume 62  

Science Conference Proceedings (OSTI)

... of the effect of drag on the orbital inclination of an earth satellite, p. 79 ... Heat transfer in laminar flow through a tube, p. 101 Abramowitz, M.; Cahill, WF ...

2012-10-05T23:59:59.000Z

483

The Astrophysical Journal, 541:L21L24, 2000 September 20 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.  

E-Print Network (OSTI)

, and the Poynting regime, in which the energy and angular momentum outflows from the disk are car- ried predominantly by the electromagnetic field. The hydro- magnetic outflows arise when the inclination

484

The Economic Value of PV and Net Metering to Residential Customers in California  

E-Print Network (OSTI)

are highest under the utilities’ TOU rates. The no-tiltTOU) rate. The utilities’ flat rates are “inclining block”in Tier 5. Both utilities’ flat rates also specify a minimum

Darghouth, Naim

2010-01-01T23:59:59.000Z

485