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We encourage you to perform a real-time search of NLEBeta
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1

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

2

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

3

leftfielder inclination,  

E-Print Network [OSTI]

in 4.0 seconds. How hard, and with what angle of inclination, must the ball be thrown to prevent resistance is proportional to the square of the speed -- ignore wind -- the umpire is in a good position

Meade, Douglas B.

4

E-Print Network 3.0 - automated guideway transit Sample Search...  

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

Edition INTRODUCTION AND CONCEPTS Summary: for evaluating the capacity of heavy rail (rapid) transit, light rail, commuter rail, automated guideway transit... Transit Capacity...

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 second case simulated was the Sun-Jupiter-Earth system, modeled as a three-body problem in the ecliptic plane. This simulation again tested that the code accurately models the n-body problem and planetary systems found in nature. The expected solution...-body simulation has been shown to satisfy all three of Kepler?s laws and can be considered an accurate representation of our Solar System. The Sun-Jupiter-Earth system The second case simulated was the Sun-Jupiter-Earth system, modeled as a three-body problem...

Nichols, Kristin

2013-02-01T23:59:59.000Z

6

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...

Best, Matthew Evans

2012-06-07T23:59:59.000Z

7

Weatherford Inclined Wellbore Construction  

SciTech Connect (OSTI)

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

8

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

9

Flow visualisation in inclined louvered fins  

SciTech Connect (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

10

INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES The interference of an impinging plane oblique  

E-Print Network [OSTI]

wind tunnel by using the thermal sensitive coating technique [4-5]. 2 Flow Patterns We consider stream of rarefied air. The plane oblique shock with inclination angle is generated by a wedge

Riabov, Vladimir V.

11

Roughening and inclination of competition interfaces  

E-Print Network [OSTI]

The competition interface between two growing ``Young clusters'' (diagrams), in a two-dimensional random cone, is mapped to the path of a second-class particle in the one-dimensional totally asymmetric simple exclusion process. Using the asymptotics of the second class particle and hydrodynamic limits for the exclusion process (Burgers equation), we show that the behavior of the competition interface depends on the angle of the cone: for angles in [180^o, 270^o) the competition interface has a deterministic inclination, while for angles in [90^o,180^o) the inclination is random. We relate the competition model to a model of random directed polymers, and obtain some partial results for the fluctuations of the competition interface.

Pablo A. Ferrari; James B. Martin; Leandro P. R. Pimentel

2004-12-09T23:59:59.000Z

12

Inclination Effects in Spiral Galaxy Gravitational Lensing  

E-Print Network [OSTI]

Spheroidal components of spiral galaxies have been considered the only dynamically important component in gravitational lensing studies thus far. Here we point out that including the disk component can have a significant effect, depending on the disk inclination, on a variety of lensing properties that are relevant to present studies and future surveys. As an example, we look at the multiple image system B1600+434, recently identified as being lensed by a spiral galaxy. We find that including the disk component one can understand the fairly large image separation as being due to the inclination of a typical spiral, rather than the presence of a very massive halo. The fairly low magnification ratio can also be readily understood if the disk is included. We also discuss how such lensed systems might allow one to constrain parameters of spiral galaxies such as a disk-to-halo mass ratio, and disk mass scale length. Another example we consider is the quasar multiple-lensing cross section, which we find can increase many-fold at high inclination for a typical spiral. Finally, we discuss the changes in the gravitational lensing effects on damped Lyman alpha systems (DLAS) when disk lensing is included.

Ariyeh Maller; Ricardo Flores; Joel Primack

1997-01-16T23:59:59.000Z

13

Optimization of solar flat collector inclination  

Science Journals Connector (OSTI)

Solar collectors need to be inclined at the optimum angle to maximize the receiving energy. In spite of many theoretical and experimental investigations on optimization of solar collector inclination, there is an inconsistency in presented results. In this paper, solar global radiation on a horizontal surface was estimated using a mathematical model and the results were compared with the recorded data from the Zahedan city meteorological station. Total received solar energy by a flat inclined collector was determined in a certain day, and searching for the angle which has the maximum incident energy was the general procedure in determination of daily optimum tilt angle. In case of operational limitation for daily tilt adjustment, this procedure is repeated for other specific period of time and monthly, seasonal, semi-annual and annual optimum tilt angles were determined. A MATLAB-based code is used to calculate the daily optimum tilt angle. The results were in good agreement with the obtained data of a new constructed device. Finally, in the case of stationary devices, some recommendations were presented with respect to their typical application.

Hamid Moghadam; Farshad Farshchi Tabrizi; Ashkan Zolfaghari Sharak

2011-01-01T23:59:59.000Z

14

HIGH-INCLINATION ATENS ARE INDEED RARE  

SciTech Connect (OSTI)

A recent publication by the Near-Earth Object (NEOWISE) team (Mainzer et al.) using data from the Wide-field Infrared Survey Explorer compared the spacecraft's detected near-Earth asteroid subpopulation orbital element distributions to those expected from the Bottke et al. NEO orbital model. They found a discrepency between the detected and expected Aten inclination distribution. We show that the more recent NEO orbital distribution model by Greenstreet et al., when biased using the NEOWISE detection biases, gives a better match to the NEOWISE detections for the Aten (a < 1.0 AU, Q > 0.983 AU) population in semimajor axis (a), eccentricity (e), and inclination (i) than the Bottke et al. model. A Kolmogorov-Smirnov test gives the probability of drawing the NEOWISE detections from the biased Bottke et al. model as not rejectable (at >99% confidence) for the Aten semimajor axis distribution, but is rejectable at such a high level of confidence for the Aten eccentricity and inclination distributions. For all three orbital element distributions, the biased Greenstreet et al. model provides an acceptable match to the NEOWISE Aten detections. The deficiency in the previous model is likely due to the numerical integration's accuracy having broken down in the high-speed regime for planetary encounters near the Sun, an effect which the newer model does not suffer, and thus likely is the model of preference for perihelia q < 1.0 AU.

Greenstreet, S.; Gladman, B., E-mail: sarahg@phas.ubc.ca [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia V6T 1Z1 (Canada)

2013-04-10T23:59:59.000Z

15

Focal plane  

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

16

Inclined-substrate deposition of biaxially textured magnesium oxide thin films for YBCO coated conductors.  

SciTech Connect (OSTI)

Highly textured MgO films were grown by the inclined-substrate deposition (ISD) technique at a high deposition rate. A columnar grain with a roofing-tile-shaped surface was observed in these MgO films. X-ray pole figure, and {phi}- and {omega}-scan were used to characterize in-plane and out-of-plane textures. MgO films deposited when the incline angle {alpha} was 55 and 30 degrees exhibited the best in-plane and out-of-plane texture, respectively. High-quality YBCO films were epitaxially grown on ISD-MgO-buffered Hastelloy C substrates by pulsed laser deposition. {Tc}=88 K, with sharp transition, and j{sub c} values of {approx}2x10{sup 5} A/cm{sup 2} at 77 K in zero field were observed on films 5 mm wide and 1 cm long. This work has demonstrated that biaxially textured ISD MgO buffer layers deposited on metal substrates are excellent candidates for fabrication of high-quality YBCO coated conductors.

Ma, B.; Li, M.; Jee, Y. A.; Koritala, R. E.; Fisher, B. L.; Balachandran, U.; Energy Technology

2002-02-01T23:59:59.000Z

17

A unified model for slug flow in upward inclined pipes  

SciTech Connect (OSTI)

The effect of pipe inclination on upward two-phase slug flow characteristics has been studied both experimentally and theoretically. Experimental data were acquired for the entire range of inclination angles, from horizontal to vertical. New correlations were developed for slug length and liquid holdup in the slug body as a function of inclination angle. A unified model has been developed for the prediction of slug flow behavior in upward inclined pipes. Reasonable agreement is observed between the pressure drop predicted by the model and the experimental data.

Felizola, H.; Shoham, O. [Univ. of Tulsa, OK (United States). Petroleum Engineering Dept.

1995-03-01T23:59:59.000Z

18

Biaxially aligned template films fabricated by inclined-substrate deposition for YBCO-coated conductor applications.  

SciTech Connect (OSTI)

Inclined substrate deposition (ISD) has the potential for rapid production of high-quality biaxially textured buffer layers, which are important for YBCO-coated conductor applications. We have grown biaxially textured MgO films by ISD at deposition rates of 20-100 {angstrom}/sec. Columnar grains with a roof-tile surface structure were observed in the ISD-MgO films. X-ray pole figure analysis revealed that the (002) planes of the ISD-MgO films are tilted at an angle from the substrate normal. A small {phi}-scan full-width at half maximum (FWHM) of {approx}9{sup o} was observed on MgO films deposited at an inclination angle of 55{sup o}. In-plane texture in the ISD MgO films developed in the first 0.5 {micro}m from the interface, then stabilized with further increases in film thickness. YBCO films deposited by pulsed laser deposition on ISD-MgO buffered Hastelloy C276 substrates were biaxially aligned with the c-axis parallel to the substrate normal. T{sub c} of 91 K with a sharp transition and transport J{sub c} of 5.5 x 10{sup 5} A/cm{sup 2} at 77 K in self-field were measured on a YBCO film that was 0.46-{micro}m thick, 4-mm wide, 10-mm long.

Ma, B.; Li, M.; Koritala, R. E.; Fisher, B. L.; Erck, R. A.; Dorris, S. E.; Miller, D. J.; Balachandran, U.

2002-08-12T23:59:59.000Z

19

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

20

Plane waves Lumped systems  

E-Print Network [OSTI]

1 Impedance · Plane waves ­ Lumped systems S x y z Impedance · Plane waves ­ Lumped systems · open tube #12;2 Impedance · Plane waves ­ Lumped systems · closed tube Impedance · Cylindrical waves z x y r #12;3 Impedance · Cylindrical waves ­ Circumferential part n=0 n=1 n=2 n=3 Impedance · Cylindrical

Berlin,Technische Universität

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

E-Print Network 3.0 - ambitions political inclinations Sample...  

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

ambitions political inclinations Search Powered by Explorit Topic List Advanced Search Sample search results for: ambitions political inclinations Page: << < 1 2 3 4 5 > >> 1 The...

22

3-D Thermoconvection in an Anisotropic Inclined Sedimentary Layer  

Science Journals Connector (OSTI)

......3-D thermoconvection in an anisotropic inclined sedimentary layer...basin generally present an anisotropic structure with maximum permeability...We extend these results to anisotropic media, with anisotropies...are usually embedded in a shale matrix (Busch 1974; Pettijohn......

Anne Ormond; Pierre Genthon

1993-02-01T23:59:59.000Z

23

Average East-West Inclinations of Surface Magnetic Field Lines  

Science Journals Connector (OSTI)

The east-west component of the inclination to the vertical of magnetic field lines of fields measured at the photospheric level is calculated ... and as a function of latitude. These fields represent mostly non-s...

Robert F. Howard

1994-01-01T23:59:59.000Z

24

Oil spill fluorosensing lidar for inclined onshore or shipboard operation  

Science Journals Connector (OSTI)

An oil spill detection fluorosensing lidar for onshore or shipboard operation is described. Some difficulties for its operation arise from the inclined path of rays. This is due to...

Karpicz, Renata; Dementjev, Andrej; Kuprionis, Zenonas; Pakalnis, Saulius; Westphal, Rainer; Reuter, Rainer; Gulbinas, Vidmantas

2006-01-01T23:59:59.000Z

25

Numerical analysis of the influence of inclination angle and wind on the heat losses of cavity receivers for solar thermal power towers  

Science Journals Connector (OSTI)

Abstract The convective heat losses of cavity receivers for solar thermal power towers are of great importance for the overall efficiency of the whole system. However, the influence of wind on these losses has not been studied sufficiently for large scale cavity receivers with different inclination angles. In this present study the impact of head-on and side-on wind on large cavity receivers with inclination angles in the range of 0 (horizontal cavity) to 90 (vertical cavity) is analyzed numerically. The simulation results are compared to data published in literature. When no wind is present the losses decrease considerably with increasing inclination angle of the receiver. In case of a horizontal receiver wind does not have a huge impact on the losses: they remain constant on a high level. In case of an inclined cavity wind increases the heat losses significantly in most of the cases, although the highest absolute value of the losses occurs for the horizontal receiver exposed to head on wind. In some cases, when wind is flowing parallel to the aperture plane, a reduction of the heat losses is observed. The temperature distribution in the cavity is analyzed in order to explain the impact of wind on the heat losses. Wind in general causes a shrinking of the zone with uniform high temperature in the upper region of the cavity, whereas wind flowing parallel to the aperture plane additionally inhibits hot air from leaving the cavity and therefore leads to an increased temperature in the lower zone.

Robert Flesch; Hannes Stadler; Ralf Uhlig; Robert Pitz-Paal

2014-01-01T23:59:59.000Z

26

Fabrication of biaxially textured templates for coated conductors by inclined substrate deposition.  

SciTech Connect (OSTI)

YBCO-coated conductors will enable the development of smaller, lighter, more-efficient electric power devices that can be operated at temperatures approaching that of liquid nitrogen. The critical current density (J{sub c}) of YBCO films on flexible metallic substrates has been significantly improved by epitaxially growing the YBCO on biaxially textured template films. Inclined substrate deposition (ISD) offers the potential for rapidly producing high-quality biaxially textured buffer layers that are suitable for YBCO-coated conductors. Using the ISD method, we have grown biaxially textured MgO films at deposition rates of 20-100 {angstrom}/sec. Electron microscopy of the ISD-MgO films revealed columnar grains topped off by MgO (002) planes, and X-ray pole figure analysis showed that the (002) planes are tilted with respect to the substrate normal, giving ISD-MgO films a roof-tile surface morphology. A small phi-scan full-width at half maximum of {approx}10{sup o} was observed on ISD-MgO films deposited with a substrate inclination of 55{sup o}. YBCO films were grown on ISD-MgO buffered Hastelloy substrates by pulsed laser deposition. A sample that was 0.42 {micro}m x 0.45 mm x 1 cm gave a transport J{sub c} of {approx}0.34 MA/cm{sup 2} at 77 K in self-field. Details of ISD-MgO film fabrication and characterization, as well as the results of YBCO deposited on the ISD-MgO architecture, are presented.

Dorris, S. E.; Ma, B.; Li, M.; Fisher, B. L.; Koritala, R. E.; Erck, R.; Miller, D. E.; Balachandran, U.

2002-08-21T23:59:59.000Z

27

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

28

Inclined fluidized bed system for drying fine coal  

DOE Patents [OSTI]

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

29

Heliospheric current sheet inclinations at Venus and Earth G. Ma, K. Marubashi, and T. Maruyama  

E-Print Network [OSTI]

that the heliospheric current sheet inclination tends to be maintained during propagation of the solar wind from 0.72 AUHeliospheric current sheet inclinations at Venus and Earth G. Ma, K. Marubashi, and T. Maruyama / Revised: 16 September 1998 / Accepted: 22 October 1998 Abstract. We investigate the inclinations

Paris-Sud XI, Université de

30

Dual Plane Imaging  

E-Print Network [OSTI]

We outline a technique called Dual Plane Imaging which should significantly improve images which would otherwise be blurred due to atmospheric turbulence. The technique involves capturing all the spatial, directional and temporal information about the arriving photons and processing the data afterwards to produce the sharpened images. The technique has particular relevance for imaging at around 400-1000nm on extremely large telescopes (ELTs).

Parry, Ian

2015-01-01T23:59:59.000Z

31

Symmetry planes of Paleozoic crinoids  

E-Print Network [OSTI]

WebsterSymmetry Planes of Paleozoic Crinoids 15Lane and -vestibule o CD 1 6 moot: 5 -hydropore 8b 7b Fin. 1Symmetry planes of Paleozoic crinoids (1-5) and crinoid larvae (6-10). I. Anteroposterior (A-CD) symmetry plane of most Paleozoic crinoids... WebsterSymmetry Planes of Paleozoic Crinoids 15Lane and -vestibule o CD 1 6 moot: 5 -hydropore 8b 7b Fin. 1Symmetry planes of Paleozoic crinoids (1-5) and crinoid larvae (6-10). I. Anteroposterior (A-CD) symmetry plane of most Paleozoic crinoids...

Lane, N. G.; Webster, G. D.

1967-11-30T23:59:59.000Z

32

Inclined-substrate deposition of biaxially aligned template films for YBCO-coated conductors.  

SciTech Connect (OSTI)

Inclined-substrate deposition (ISD) of magnesium oxide (MgO) produces biaxially textured template films at high deposition rates. This process is promising for the fabrication of the second-generation superconducting wires. Biaxially aligned MgO films ({approx}1.5 {mu}m thick) were deposited on polished Hastelloy C276 (HC) substrates by ISD at deposition rates of 20-100 {angstrom}/s. Buffer films were subsequently deposited on these template films, and YBCO films were deposited epitaxially on the substrates by pulsed laser deposition. X-ray pole figure analysis and {psi}- and {omega}-scans were used for texture characterization. Good in- and out-of-plane textures were observed, with MgO(0 0 2) {phi}-scan full-width at half maximum (FWHM) of 9.2{sup o} and {omega}-scan FWHM of 5.4{sup o}, respectively. T{sub c} of 90 K with a sharp transition, and J{sub c} {approx} 2 x 10{sup 5} A/cm{sup 2}, were obtained on a 0.5 {mu}m thick, 0.5 cm wide, and 1 cm long YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) film at 77 K in self-field.

Ma, B.; Li, M.; Fisher, B. L.; Koritala, R. E.; Balachandran, U. (Energy Technology)

2002-10-15T23:59:59.000Z

33

Do liquid drops roll or slide on inclined surfaces?  

E-Print Network [OSTI]

We study the motion of a two-dimensional droplet on an inclined surface, under the action of gravity, using a diffuse interface model which allows for arbitrary equilibrium contact angles. The kinematics of motion is analysed by decomposing the gradient of the velocity inside the droplet into a shear and a residual flow. This decomposition helps in distinguishing sliding versus rolling motion of the drop. Our detailed study confirms intuition, in that rolling motion dominates as the droplet shape approaches a circle, and the viscosity contrast between the droplet and the ambient fluid becomes large. As a consequence of kinematics, the amount of rotation in a general droplet shape follows a universal curve characterised by geometry, and independent of Bond number, surface inclination and equilibrium contact angle, but determined by the slip length and viscosity contrast. Our results open the way towards a rational design of droplet-surface properties, both when rolling motion is desirable (as in self-cleaning hydrophobic droplets) or when it must be prevented (as in insecticide sprays on leaves).

Sumesh P. Thampi; Ronojoy Adhikari; Rama Govindarajan

2014-05-08T23:59:59.000Z

34

Measuring the orbital inclination of Z Andromedae from Rayleigh scattering  

E-Print Network [OSTI]

The orbital inclination of the symbiotic prototype Z And has not been established yet. At present, two very different values are considered, i ~ 44 degrees and i >~ 73 degrees. The correct value of i is a key parameter in, for example, modeling the highly-collimated jets of Z And. The aim of this paper is to measure the orbital inclination of Z And. First, we derive the hydrogen column density (nH), which causes the Rayleigh scattering of the far-UV spectrum at the orbital phase phi = 0.961 plus/minus 0.018. Second, we calculate nH as a function of i and phi for the ionization structure during the quiescent phase. Third, we compare the nH(i,phi) models with the observed value. The most probable shaping of the HI/HII boundaries and the uncertainties in the orbital phase limit i of Z And to 59 -2/+3 degrees. Systematic errors given by using different wind velocity laws can increase i up to ~74 degrees. A high value of i is supported independently by the orbitally related variation in the far-UV continuum and th...

Skopal, A

2012-01-01T23:59:59.000Z

35

Anisotropic Porochemoelectroelastic Solution for Inclined Wellbores with Applications to Operations in Unconventional Shale Plays  

Science Journals Connector (OSTI)

In this work, the porochemoelectroelastic theory is applied to analyze instability problems of an inclined wellbore drilled in the laminated and charged saturated chemically active shale formations. Numerical ...

Minh H. Tran; Younane N. Abousleiman

2013-01-01T23:59:59.000Z

36

On the 'Scattered' Inclinations in the Kuiper Belt  

E-Print Network [OSTI]

This paper shows that the inclinations of bodies captured into mean motion resonances in the Kuiper belt have remained very nearly unchanged, being only slightly increased from initial lower values by migration and/or by long-term planetary perturbations. Thus the observed maximum as high as ~ 30 deg of the i's of bodies in resonance must reflect either a broad initial range at least to that level for capturable bodies or an elevating process possibly exemplified by the sweeping of secular resonances. We have obtained capture probabilities for 2 well-populated resonances, showing reduced but finite values for i's up to 35 deg. Whatever led to the present distribution must have produced increases in i for some, but not for all, resonant bodies in the belt.

Franklin, Fred

2015-01-01T23:59:59.000Z

37

Characterization of the effect of Froude number on surface waves and heat transfer in inclined turbulent  

E-Print Network [OSTI]

Characterization of the effect of Froude number on surface waves and heat transfer in inclined describes wave/heat transfer phenomena in inclined turbulent open surface water flows. The experiments were. These changes lead to a heat transfer improvement, enough to double the heat transfer coefficient

Abdou, Mohamed

38

Reynolds Number Invariance of the Structure Inclination Angle in Wall Turbulence Ivan Marusic*  

E-Print Network [OSTI]

Reynolds Number Invariance of the Structure Inclination Angle in Wall Turbulence Ivan Marusic using hot-film and hot-wire anemometry in a wind tunnel facility, and sonic anemometers and a purpose has not been available before. Structure inclination angles are inferred from the cross correlation

Marusic, Ivan

39

Stellar model atmospheres with magnetic line blanketing. III. The role of magnetic field inclination  

E-Print Network [OSTI]

Context. See abstract in the paper. Aims. In the last paper of this series we study the effects of the magnetic field, varying its strength and orientation, on the model atmosphere structure, the energy distribution, photometric colors and the hydrogen Balmer line profiles. We compare with the previous results for an isotropic case in order to understand whether there is a clear relation between the value of the magnetic field angle and model changes, and to study how important the additional orientational information is. Also, we examine the probable explanation of the visual flux depressions of the magnetic chemically peculiar stars in the context of this work. Methods. We calculated one more grid of the model atmospheres of magnetic A and B stars for different effective temperatures (Teff=8000K, 11000K, 15000K), magnetic field strengths (B=0, 5, 10, 40 kG) and various angles of the magnetic field (Omega=0-90 degr) with respect to the atmosphere plane. We used the LLmodels code which implements a direct method for line opacity calculation, anomalous Zeeman splitting of spectral lines, and polarized radiation transfer. Results. We have not found significant changes in model atmosphere structure, photometric and spectroscopic observables or profiles of hydrogen Balmer lines as we vary the magnetic field inclination angle Omega. The strength of the magnetic field plays the main role in magnetic line blanketing. We show that the magnetic field has a clear relation to the visual flux depressions of the magnetic CP stars. Conclusions. See abstract in the paper.

S. A. Khan; D. V. Shulyak

2006-07-20T23:59:59.000Z

40

Inclined substrate deposition of magnesium oxide for YBCO-coated conductors.  

SciTech Connect (OSTI)

Thin films of YBa{sub 2}Cu{sub 3}O{sub 7-x} (YBCO) were grown on MgO buffered metallic substrates by pulsed laser deposition (PLD). The MgO buffer films, which provide the initial biaxial texture, had been grown on polished Hastelloy C276 (HC) tapes using inclined substrate deposition (ISD). The ISD process is promising for the fabrication of coated superconductor wires because it produces biaxially textured template films on nontextured substrate at high deposition rates. Biaxially aligned MgO films were deposited at deposition rates of 20 to 100 {angstrom}/sec. The buffer films were deposited on these template films before ablation of the YBCO films by PLD. The microstructure was studied by scanning electron microscopy and atomic force microscopy. X-ray pole figure analysis and {phi}- and {omega}-scans were used for texture characterization. Good in- and out-of-plane textures were observed on the ISD MgO films ({approx}1.5 {micro}m thick). The full width at half maximums were 9.2{sup o} for the MgO (002) {phi}-scan and 5.4{sup o} for the {omega}-scan. Cube-on-cube epitaxial growth of yttria-stabilized zirconia (YSZ) and ceria (CeO{sub 2}) films on the ISD MgO films was also achieved by PLD. A superconducting critical temperature of 90 K, with a sharp transition, and transport critical current density of >2.5 x 10{sup 5} A/cm{sup 2} were obtained on a 0.5-{micro}m-thick, 0.5-cm-wide, and 1-cm-long YBCO film with MgO buffer layer at 77 K in self-field.

Ma, B.; Li, M.; Fisher, B. L.; Koritala, R. E.; Dorris, S. E.; Maroni, V. A.; Balachandran, U.

2002-04-26T23:59:59.000Z

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
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41

A Spectrophotometric Method to Determine the Inclination of Class I Objects  

E-Print Network [OSTI]

A new method which enables us to estimate the inclination of Class I young stellar objects is proposed. Since Class I objects are not spherically symmetric, it is likely that the observed feature is sensitive to the inclination of the system. Thus, we construct a protostar model by carefully treating two-dimensional (2D) radiative transfer and radiative equilibrium. We show from the present 2D numerical simulations that the emergent luminosity L_SED,which is the frequency integration of spectral energy distribution (SED), depends strongly on the inclination of the system i, whereas the peak flux is insensitive to i. Based on this result, we introduce a novel indicator f_L, which is the ratio of L_SED to the peak flux, as a good measure for the inclination. By using f_L, we can determine the inclination regardless of the other physical parameters. The inclination would be determined by f_L within the accuracy of +- 5 degree, if the opening angle of bipolar outflows is specified by any other procedure. Since this spectrophotometric method is easier than a geometrical method or a full SED fitting method, this method could be a powerful tool to investigate the feature of protostars statistically with observational data which will be provided by future missions, such as SIRTF, ASTRO-F, and ALMA.

T. Nakazato; T. Nakamoto; M. Umemura

2002-10-11T23:59:59.000Z

42

Explosive plane-wave lens  

DOE Patents [OSTI]

An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive. 4 figs.

Marsh, S.P.

1988-03-08T23:59:59.000Z

43

Explosive plane-wave lens  

DOE Patents [OSTI]

An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive. 3 figs., 3 tabs.

Marsh, S.P.

1987-03-12T23:59:59.000Z

44

Explosive plane-wave lens  

DOE Patents [OSTI]

An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive.

Marsh, Stanley P. (Los Alamos, NM)

1988-01-01T23:59:59.000Z

45

THE PHOTOMETRIC AND KINEMATIC STRUCTURE OF FACE-ON DISK GALAXIES. III. KINEMATIC INCLINATIONS FROM H{alpha} VELOCITY FIELDS  

SciTech Connect (OSTI)

Using the integral field unit DensePak on the WIYN 3.5 m telescope we have obtained H{alpha} velocity fields of 39 nearly face-on disks at echelle resolutions. High-quality, uniform kinematic data and a new modeling technique enabled us to derive accurate and precise kinematic inclinations with mean i{sub kin} = 23 Degree-Sign for 90% of these galaxies. Modeling the kinematic data as single, inclined disks in circular rotation improves upon the traditional tilted-ring method. We measure kinematic inclinations with a precision in sin i of 25% at 20 Degree-Sign and 6% at 30 Degree-Sign . Kinematic inclinations are consistent with photometric and inverse Tully-Fisher inclinations when the sample is culled of galaxies with kinematic asymmetries, for which we give two specific prescriptions. Kinematic inclinations can therefore be used in statistical ''face-on'' Tully-Fisher studies. A weighted combination of multiple, independent inclination measurements yield the most precise and accurate inclination. Combining inverse Tully-Fisher inclinations with kinematic inclinations yields joint probability inclinations with a precision in sin i of 10% at 15 Degree-Sign and 5% at 30 Degree-Sign . This level of precision makes accurate mass decompositions of galaxies possible even at low inclination. We find scaling relations between rotation speed and disk-scale length identical to results from more inclined samples. We also observe the trend of more steeply rising rotation curves with increased rotation speed and light concentration. This trend appears to be uncorrelated with disk surface brightness.

Andersen, David R. [NRC Herzberg Institute of Astrophysics, 5071 W Saanich Road, Victoria, BC V9E 2E7 (Canada); Bershady, Matthew A., E-mail: david.andersen@nrc-cnrc.gc.ca, E-mail: mab@astro.wisc.edu [Department of Astronomy, University of Wisconsin, 475 N Charter Street, Madison, WI 53706 (United States)

2013-05-01T23:59:59.000Z

46

Broadband Ground-Plane Cloak  

Science Journals Connector (OSTI)

...automated design process. The ground-plane...Maxwell's equations implies that...number of simulations of the metamaterial...cloak-design process and makes...Jacobian matrix {lambda...Jacobian matrix). In our...retrieval process, modified...numerical simulation. A regression...a single Matlab program...Adobe Acrobat PDF format...

R. Liu; C. Ji; J. J. Mock; J. Y. Chin; T. J. Cui; D. R. Smith

2009-01-16T23:59:59.000Z

47

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

48

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

49

An experimental investigation of an inclined passive wall solar chimney for natural ventilation  

Science Journals Connector (OSTI)

Abstract Ongoing investigations into solar chimney development have resulted in constantly evolving new designs. In this study, experiments are carried out with an inclined passive wall solar chimney (IPWSC) model with a uniform heat flux on the active (absorptive) wall. The effectiveness of this design has been examined for the heat flux range of 100W/m2500W/m2 with a fixed base air gap width of 0.1m and inclination angles of the passive wall in the range of 06 degrees. The experimental results show that the inclination angle of the passive wall has no significant effect on the temperature distribution across the air gap width and along the chimney height. On the other hand, the averaged air flow velocity across the air gap width is strongly affected by the inclination angle. The experimental results also show that the IPWSC with 0.7m absorber height and 0.1m air gap width at an inclination angle of 6 and input heat flux of 500W/m2 can produce sufficient ventilation for a 27m3 room based on ASHREA standards. Further, the present experimental results show that the IPWSC design can significantly improve the ventilation performance of a solar chimney in comparison to the conventional chimney design with vertical passive wall configuration. The experimental results are supported by flow visualization experiments and are consistent with scaling predictions.

Rakesh Khanal; Chengwang Lei

2014-01-01T23:59:59.000Z

50

Numerical investigation of transient flow-mode transition of laminar natural convection in an inclined enclosure  

SciTech Connect (OSTI)

The present work is concerned with a numerical investigation of transient laminar natural convection and the associated flow-mode transition in a two-dimensional rectangular enclosure. Navier-Stokes/Boussinesq equations for fluid flow and energy balance are solved by using the SIMPLE-C algorithm. Air of Pr = 0.71 in a differentially heated enclose of length-to-height aspect ratio As = 4 and at Ra = 5,000 is chosen as the flow model to examine the influences of the inclination. Calculations of time accuracy are performed to investigate the transient procedure of the flow-mode transition with increasing or decreasing inclination. The present results reveal that, at some critical situations, natural convection in inclined enclosures is very sensitive to the change in tilt angle, and the associated heat transfer rates are closely related to the correspondent cellular flow patterns.

Tzeng, P.Y.; Soong, C.Y.; Sheu, T.S. [Chung Cheng Inst. of Tech., Taoyuan (Taiwan, Province of China). Dept. of Aeronautical Engineering

1997-02-07T23:59:59.000Z

51

Ion Feedback Suppression Using Inclined MCP Holes in a _Single-MCP+Micromegas+Pads_ Detector  

SciTech Connect (OSTI)

We show that the ion backflow to photocathode can be completely suppressed if one uses inclined MCP holes in a presence of magnetic field. The inclined hole angles are chosen to be aligned with the Lorentz electron angle allowing the electron transmission and amplification, while positive ions, traveling along a different angle, are caught on the MCP hole walls. The detector under investigation is a new gaseous detector structure based on a tandem of two parts, a single MCP (Microchannel) plate, a Micromegas with pad readout. We are aiming to develop a gaseous photon detector with the Bialkali photocathode, however, one could use some ideas in the paper for other types of detectors.

Va'vra, J.; /SLAC; Sumiyoshi, T.; /Tokyo Metropolitan U.

2005-09-30T23:59:59.000Z

52

Fiber optic inclination detector system having a weighted sphere with reference points  

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, Jeffrey P. (Ballston Lake, NY)

1995-01-01T23:59:59.000Z

53

First Measurements of the Inclined Boron Layer Thermal-Neutron Detector for Reflectometry  

SciTech Connect (OSTI)

A prototype detector based on the inclined boron layer principle is introduced. For typical measurement conditions at the Liquids Reflectometer at the Spallation Neutron Source, its count rate capability is shown to be superior to that of the current detector by nearly two orders of magnitude.

Clonts, Lloyd G [ORNL; Crow, Lowell [ORNL; Van Vuure, Thorwald L [ORNL; Robertson, Lee [ORNL; Riedel, Richard A [ORNL; Richards, John D [ORNL; Cooper, Ronald G [ORNL; Remec, Igor [ORNL; Ankner, John Francis [ORNL; Browning, Jim [ORNL

2010-01-01T23:59:59.000Z

54

First Measurements of the Inclined Boron Layer Thermal-Neutron Detector for Reflectometry  

SciTech Connect (OSTI)

A prototype detector based on the inclined absorber layer principle is introduced. For the Liquids Reflectometer at the Spallation Neutron Source, it is shown to be a significant improvement over its current detector, which imposes an instantaneous count rate limitation of 50 kcps.

Van Vuure, Thorwald L [ORNL] [ORNL; Clonts, Lloyd G [ORNL] [ORNL; Crow, Lowell [ORNL] [ORNL; Cooper, Ronald G [ORNL] [ORNL; Richards, John D [ORNL] [ORNL; Riedel, Richard A [ORNL] [ORNL; Robertson, Lee [ORNL] [ORNL

2008-01-01T23:59:59.000Z

55

An experimental and numerical study of heat transfer off an inclined surface subject to an impinging airflow  

E-Print Network [OSTI]

An experimental and numerical study of heat transfer off an inclined surface subject in revised form 23 August 2001 Abstract Understanding the heat transfer interaction between an impinging jet and an inclined surface is of paramount practical significance. In this paper, the heat transfer process

Roy, Subrata

56

COMPARISON OF MICRO-INCH IN-PLANE AND OUT-OF-PLANE RESPONSE OF CRACKS  

E-Print Network [OSTI]

limestone quarries. In two locations, sensors that measure in-plane and normal displacement were installed

57

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

58

Probability distribution function for inclinations of merging compact binaries detected by gravitational wave interferometers  

E-Print Network [OSTI]

We analytically discuss probability distribution function (PDF) for inclinations of merging compact binaries whose gravitational waves are coherently detected by a network of ground based interferometers. The PDF would be useful for studying prospects of (1) simultaneously detecting electromagnetic signals (such as gamma-ray-bursts) associated with binary mergers and (2) statistically constraining the related theoretical models from the actual observational data of multi-messenger astronomy. Our approach is similar to Schutz (2011), but we explicitly include the dependence of the polarization angles of the binaries, based on the concise formulation given in Cutler and Flanagan (1994). We find that the overall profiles of the PDFs are similar for any networks composed by the second generation detectors (Advanced-LIGO, Advanced-Virgo, KAGRA, LIGO-India). For example, 5.1% of detected binaries would have inclination angle less than 10 degree with at most 0.1% differences between the potential networks. A perturb...

Seto, Naoki

2014-01-01T23:59:59.000Z

59

The scour of cohesive soils by an inclined submerged water jet  

E-Print Network [OSTI]

into the channel reducing its navigable depth, and causes lateral retreat as a result of slope instability. Also, the study of cohesive incline scour can be applied to improving the efficiency of jet assisted draghead dredging as described by Herbich (12... efficient translation of the impinging jet to the wall jet reducing the center line nozmal pressure. Also, as predicted by Eg. 17 the kinetic energy of the jet decreased with increasing distance away from the orifice. Thus, the normal surface pressure...

Hedges, Joseph Delbert

2012-06-07T23:59:59.000Z

60

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

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

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

SciTech Connect (OSTI)

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

62

"Granular jets and hydraulic jumps on an inclined plane", C. G. Johnson, J. M. N. T. Gray ( ), J. Fluid Mech., (Submitted)  

E-Print Network [OSTI]

indicates the parameters for which teardrop-shaped shocks (?), blunted shocks (), steady subcritical , with supercritical ow (Fr > 1) marked in red/yellow, and subcritical ow (Fr a discontinuity in ow height and velocity, analogous to a hydraulic jump in shallow-water ow. is steady jump takes

Heil, Matthias

63

Modeling multiphase flow for high viscosity liquids: a study of vertical/inclined zero net liquid flow  

E-Print Network [OSTI]

for higher viscosities. The trend suggests that the flow distribution coefficient, C[], varies with fluid viscosity and inclination angle, therefore affecting the liquid holdup in the pipe. A new model is proposed to take into account these factors and its...

Rodriguez, Jose Ramon

2012-06-07T23:59:59.000Z

64

Solar Impulse's Solar-Powered Plane  

SciTech Connect (OSTI)

Solar Impulse lands in Washington, DC at Washington Dulles International Airport as part of its journey across the United States. Secretary Ernest Moniz speaks about how advancements like those at the Department of Energy are leading the way for innovations like the solar-powered plane. Footage of the solar-powered plane courtesy of Solar Impulse.

Moniz, Ernest; Piccard, Bertrand; Reicher, Dan

2013-07-08T23:59:59.000Z

65

Solar Impulse's Solar-Powered Plane  

ScienceCinema (OSTI)

Solar Impulse lands in Washington, DC at Washington Dulles International Airport as part of its journey across the United States. Secretary Ernest Moniz speaks about how advancements like those at the Department of Energy are leading the way for innovations like the solar-powered plane. Footage of the solar-powered plane courtesy of Solar Impulse.

Moniz, Ernest; Piccard, Bertrand; Reicher, Dan

2014-01-07T23:59:59.000Z

66

Comments on the radial plane waves  

E-Print Network [OSTI]

The orthogonality of the radial plane waves, introduced by Fujikawa, turns out to be broken for the case of infinite volume. We will find, though they become overcomplete, the concept of the radial plane waves remains useful for constructing radial path integrals.

Seiji Sakoda

2009-07-30T23:59:59.000Z

67

An experimental study of the relationship between cuttings deposition and wellbore inclination in eccentric annuli  

E-Print Network [OSTI]

of Inclination on Cuttings Deposition (0 rpm data) 6 90 % Confidence Band on Regression Mean (0 rpm, AV = 2 ft/sec) 7 90 % Confidence Band on Regression Mean (0 rpm, AV = 3 ft/sec) 8 90 % Confidence Band on Regression Mean (0 rptn, AV = 4 ft/sec) 9 Effect... of Flow Rate on Cuttings Deposition (0 rpm data) 10 Mobil Data Comparison (0 rpm, AV = 2 ft/sec) 11 Mobil Data Comparison (0 rpm, AV = 3 ft/sec) 12 Mobil Data Comparison (0 rpm, AV = 4 ft/sec) 13 Iyoho Data Comparison (0 rpm data) page 26 44 45...

Colbert, John Wesley

2012-06-07T23:59:59.000Z

68

Determination of heat transfer and friction characteristics of an adapted inclined louvered fin  

SciTech Connect (OSTI)

An experimental study of a fin-and-tube heat exchanger was performed. To this end a test rig was constructed to measure the heat transfer rate on the air and waterside of the heat exchanger. A wide range of Reynolds numbers on the airside was investigated. The resulting data was used to determine the convective heat transfer correlation (expressed using the Colburn factor) and the friction factor on the airside. The fin type used in the heat exchanger of this research is an adaptation of the standard inclined louvered type. A thorough error analysis was performed, to validate the results. (author)

T'Joen, C.; Steeman, H.-J.; Willockx, A.; De Paepe, M. [Department of Flow, Heat and Combustion Mechanics, Ghent University-UGent, Sint-Pietersnieuwstraat 41, 9000 Gent (Belgium)

2006-03-01T23:59:59.000Z

69

MAPPING EARTH ANALOGS FROM PHOTOMETRIC VARIABILITY: SPIN-ORBIT TOMOGRAPHY FOR PLANETS IN INCLINED ORBITS  

SciTech Connect (OSTI)

Aiming at obtaining detailed information on the surface environment of Earth analogs, Kawahara and Fujii proposed an inversion technique of annual scattered light curves named spin-orbit tomography (SOT), which enables us to sketch a two-dimensional albedo map from annual variation of the disk-integrated scattered light, and demonstrated the method with a planet in a face-on orbit. We extend it to be applicable to general geometric configurations, including low-obliquity planets like the Earth in inclined orbits. We simulate light curves of the Earth in an inclined orbit in three photometric bands (0.4-0.5 {mu}m, 0.6-0.7 {mu}m, and 0.8-0.9 {mu}m) and show that the distribution of clouds, snow, and continents is retrieved with the aid of the SOT. We also demonstrate the SOT by applying it to an upright Earth, a tidally locked Earth, and Earth analogs with ancient continental configurations. The inversion is model independent in the sense that we do not assume specific albedo models when mapping the surface, and hence applicable in principle to any kind of inhomogeneity. This method can potentially serve as a unique tool to investigate the exohabitats/exoclimes of Earth analogs.

Fujii, Yuka [Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan); Kawahara, Hajime, E-mail: yuka.fujii@utap.phys.s.u-tokyo.ac.jp [Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397 (Japan)

2012-08-20T23:59:59.000Z

70

Strings in plane-fronted gravitational waves  

E-Print Network [OSTI]

Brinkmann's plane-fronted gravitational waves with parallel rays --~shortly pp-waves~-- are shown to provide, under suitable conditions, exact string vacua at all orders of the sigma-model perturbation expansion.

C. Duval; Z. Horvath; P. A. Horvathy

2006-02-13T23:59:59.000Z

71

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

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

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.

72

Cockpit learning in power distant cockpits: The interaction effect of pilot's interdependence and inclination to teamwork in airline industry  

Science Journals Connector (OSTI)

Abstract Cockpit learning is an essential feature of flying profession, but it may be hampered by power distance in the cockpit due to captain/co-pilot subordination. Speaking-up to the captain may be difficult for some co-pilots but not speaking-up resulted in numerous aircraft accidents. This research examines cockpit learning among airline pilots and assumes that power distance reduces cockpit learning whereas pilot's interdependence and pilot's inclination towards teamwork can counter balance it. The study develops a short cockpit-learning-scale and validates it through a stratified sample of 231 pilots chosen from British Airways, Pakistan International Airline and Saudi Arabian Airline. Data analysis indicated a strong negative influence of power distance on cockpit learning, and significant interaction effect of pilot's interdependence and pilot's inclination towards teamwork. Together, the findings suggest that pilot's interdependence and inclination towards teamwork significantly minimize the negative influence of power distance on cockpit learning.

Muhammad Aftab Alam

2014-01-01T23:59:59.000Z

73

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

74

Effects of heat transfer on peristaltic motion of Oldroyd fluid in the presence of inclined magnetic field  

Science Journals Connector (OSTI)

Abstract In this study the peristaltic motion of Oldroyd fluid in an asymmetric channel is investigated. Mathematical analysis has been carried out in the presence of an inclined magnetic field. Heat transfer is also taken into account. The physical problem is first modeled and then the analytical solutions of coupled equations are developed by regular perturbation method. Assumptions of long wavelength approximation are used. Effects of inclined magnetic field on the axial velocity and temperature are presented. Physical features of pertinent parameters such as wave number ?, Reynolds number Re , Weissenberg number Wi, Prandtl number Pr and Hartmann number M are also discussed graphically at the end of the paper.

A. Afsar Khan; R. Ellahi; M. Mudassar Gulzar; Mohsen Sheikholeslami

2014-01-01T23:59:59.000Z

75

Plane wave diffraction by a pair of parallel soft and hard overlapped half-planes  

Science Journals Connector (OSTI)

The diffraction of plane waves by a pair of parallel, overlapped half-planes characterized by Dirichlet and Neumann boundary conditions, respectively, is investigated. The corresponding boundary value problem is formulated as a matrix Weiner-Hopf equation whose solution is obtained through the weak factorization method. This method reduces the problems to an infinite system of linear algebraic equations which are solved numerically. An analysis of the scattered field, which depends on the solution obtained numerically, is also performed in some detail.

Alinur Bykaksoy; Erdem Topsakal; Mithat ?demen

1994-01-01T23:59:59.000Z

76

Flow distribution in a solar collector panel with horizontally inclined absorber strips  

Science Journals Connector (OSTI)

The objective of this work is to theoretically and experimentally investigate the flow and temperature distribution in a solar collector panel with an absorber consisting of horizontally inclined strips. Fluid flow and heat transfer in the collector panel are studied by means of computational fluid dynamics (CFD) calculations. Further, experimental investigations of a 12.5m2 solar collector panel with 16 parallel connected horizontal fins are carried out. The flow distribution through the absorber is evaluated by means of temperature measurements on the backside of the absorber tubes. The measured temperatures are compared to the temperatures determined by the CFD model and there is a good similarity between the measured and calculated results. Calculations with the CFD model elucidate the flow and temperature distribution in the collector. The influences of different operating conditions such as flow rate, properties of solar collector fluid, solar collector fluid inlet temperature and collector tilt angle are shown. The flow distribution through the absorber fins is uniform if high flow rates are used. By decreased flow rate and decreased content of glycol in the glycol/water mixture used as solar collector fluid, and by increased collector tilt and inlet temperature, the flow distribution gets worse resulting in an increased risk of boiling in the upper part of the collector panel.

Jianhua Fan; Louise Jivan Shah; Simon Furbo

2007-01-01T23:59:59.000Z

77

Magnetic spectral bounds on starlike plane domains  

E-Print Network [OSTI]

We develop sharp upper bounds for energy levels of the magnetic Laplacian on starlike plane domains, under either Dirichlet or Neumann boundary conditions and assuming a constant magnetic field in the transverse direction. Our main result says that $\\sum_{j=1}^n \\Phi \\big( \\lambda_j A/G \\big)$ is maximal for a disk whenever $\\Phi$ is concave increasing, $n \\geq 1$, the domain has area $A$, and $\\lambda_j$ is the $j$-th Dirichlet eigenvalue of the magnetic Laplacian $\\big( i\

R. S. Laugesen; B. A. Siudeja

2014-01-04T23:59:59.000Z

78

Optical links for cryogenic focal plane array Alan R. Johnston  

E-Print Network [OSTI]

Optical links for cryogenic focal plane array readout Alan R. Johnston Duncan T. H. Liu, MEMBER@jplopto.jpl.nasa.gov 1 Introduction Optical instruments employing cryogenic focal plane arrays must minimize power dissipation on the focal plane. Because cooler power efficiency is low at cryogenic temperatures, reduction

Fossum, Eric R.

79

Advantages of a PCE-based Control Plane Alberto Castro  

E-Print Network [OSTI]

Advantages of a PCE-based Control Plane for LISP Alberto Castro October 16, 2008 #12;Agenda 1 of a PCE-based Control Plane for LISP #12;Introduction Architecture Proposal Conclusions and Future Work. 2008 Advantages of a PCE-based Control Plane for LISP #12;Introduction Architecture Proposal

Politècnica de Catalunya, Universitat

80

Generating Affective Music Icons in the Emotion Plane  

E-Print Network [OSTI]

Generating Affective Music Icons in the Emotion Plane Abstract In this paper, we discuss the generation of icons that represent the emotion expressed in music. We use the emotion plane for connecting the music with the icon shape affectively. A model to project arbitrary music on the plane is introduced

Lee, In-Kwon

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

Elasticity solutions for plane anisotropic functionally graded beams  

E-Print Network [OSTI]

Elasticity solutions for plane anisotropic functionally graded beams H.J. Ding a , D.J. Huang a This paper considers the plane stress problem of generally anisotropic beams with elastic compliance of anisotropic functionally graded plane beams, with the integral constants completely determined from boundary

Wang, Ji

82

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

E-Print Network [OSTI]

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

Hirano, Teruyuki

83

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. Hence, the space of asymptotically plane wave solutions is restricted. 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.

Julian Le Witt; Simon F. Ross

2009-10-30T23:59:59.000Z

84

Smart trigger logic for focal plane arrays  

DOE Patents [OSTI]

An electronic device includes a memory configured to receive data representing light intensity values from pixels in a focal plane array and a processor that analyzes the received data to determine which light values correspond to triggered pixels, where the triggered pixels are those pixels that meet a predefined set of criteria, and determines, for each triggered pixel, a set of neighbor pixels for which light intensity values are to be stored. The electronic device also includes a buffer that temporarily stores light intensity values for at least one previously processed row of pixels, so that when a triggered pixel is identified in a current row, light intensity values for the neighbor pixels in the previously processed row and for the triggered pixel are persistently stored, as well as a data transmitter that transmits the persistently stored light intensity values for the triggered and neighbor pixels to a data receiver.

Levy, James E; Campbell, David V; Holmes, Michael L; Lovejoy, Robert; Wojciechowski, Kenneth; Kay, Randolph R; Cavanaugh, William S; Gurrieri, Thomas M

2014-03-25T23:59:59.000Z

85

Degenerate weakly nonlinear elastic plane waves  

E-Print Network [OSTI]

Weakly nonlinear plane waves are considered in hyperelastic crystals. Evolution equations are derived at a quadratically nonlinear level for the amplitudes of quasi-longitudinal and quasi-transverse waves propagating in arbitrary anisotropic media. The form of the equations obtained depends upon the direction of propagation relative to the crystal axes. A single equation is found for all propagation directions for quasi-longitudinal waves, but a pair of coupled equations occurs for quasi-transverse waves propagating along directions of degeneracy, or acoustic axes. The coupled equations involve four material parameters but they simplify if the wave propagates along an axis of material symmetry. Thus, only two parameters arise for propagation along an axis of two-fold symmetry, and one for a three-fold axis. The transverse wave equations decouple if the axis is four-fold or higher. In the absence of a symmetry axis it is possible that the evolution equations of the quasi-transverse waves decouple if the third order elastic moduli satisfy a certain identity. The theoretical results are illustrated with explicit examples.

W?odzimierz Doma?ski; Andrew N. Norris

2008-12-18T23:59:59.000Z

86

Determining Planes Along Which Earthquakes Occur- Method of Applicatio...  

Open Energy Info (EERE)

Planes Along Which Earthquakes Occur- Method of Application to Earthquakes Accompanying Hydraulic Fracturing Jump to: navigation, search OpenEI Reference LibraryAdd to library...

87

In Plane Conductivity Testing, BekkTech LLC  

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

In Plane Conductivity Testing Meeting ACS San Francisco 9-14-2006 Presented by Tim Bekkedahl High Temperature Membrane Working Group Subcontractor to FSECUCF DOE Award No....

88

?Thermo-Hydraulic Performance of a Roughened Square Duct Having Inclined Ribs with a Gap on Two Opposite Walls  

E-Print Network [OSTI]

Abstract:- Experimentation has been carried out to find the influence of a gap provided in ribs on thermohydraulic performance of a square duct roughened with discrete inclined ribs. The two opposite walls of the square duct are roughened with ribs having attack angle (?) of 45 0 and a gap on its length. The investigation has been performed for relative roughness pitch (p/e) of 10, relative roughness height (e/Dh) of 0.060 and Reynolds number is varied in the range of 5000-40,000. The other rib parameters; relative gap position (d/W) and relative gap width (g/e) is varied in the range of 1/4 2/3(4 steps) and 0.5 1.5 (3 steps) respectively. The comparative study of various cases shows that the ribs with a gap considerably enhance the value of thermohydraulic performance for the range of parameters taken for the present investigation. Presence of inclined ribs with a gap yields about 2.1-fold enhancements in thermo-hydraulic performance as compared to smooth duct. The maximum value of thermo-hydraulic performance parameter has been observed for relative gap width of 1.0 and the relative gap position of 1/3. Keywords:- Relative gap width, Relative gap position, Reynolds number, Thermo-hydraulic performance. I.

unknown authors

89

An investigation of the effects of wind-induced inclination on floating wind turbine dynamics: heave plate excursion  

Science Journals Connector (OSTI)

Abstract A current trend in offshore wind is the quest for exploitation of ever deeper water sites. At depths between 50m and 100m a promising substructure is the column-stabilised semi-submersible floating type. This solution is currently being tested at full scale at the WindFloat and Fukushima Forward demonstrator sites in Portugal and Japan respectively. The semi-sub design class frequently adopts passive motion control devices based on the water entrapment principle, such as heave plates, tanks, and skirts. Whilst effective for small inclinations, these can underperform when the structure is inclined under wind loading. This study examines the alteration of potential hydrodynamics due to wind-induced trim (geometric non-linearity) and its impact on the wind turbine?s wave response with focus on heave plate performance. Firstly it is shown by using the boundary element approach that wind trim affects wave loading in the ocean wave band between 5s and 15s, and introduces hydrodynamic coupling typical of non-symmetric hulls. These features are incorporated in frequency-domain dynamic response analysis to demonstrate that said effects bear a significant impact on the turbine?s motion in waves. Accounting of heave plate excursion improves the assessment of the seaworthiness of floating wind turbine concepts, potentially leading to new design constraints.

Raffaello Antonutti; Christophe Peyrard; Lars Johanning; Atilla Incecik; David Ingram

2014-01-01T23:59:59.000Z

90

Asymptotic Stability of a Plane CJ Detonation Wave  

E-Print Network [OSTI]

Asymptotic Stability of a Plane CJ Detonation Wave Tong Li Department of Mathematics University of California, Los Angeles Abstract. We study the asymptotic stability of a plane CJ detonation wave under and that the solution converges uniformly to a shifted CJ detonation wave as t!+ 1 for initial data which are small

Soatto, Stefano

91

Plane Waves in Isotropic Media 5.1 Maxwell's Equations  

E-Print Network [OSTI]

Chapter 5 Plane Waves in Isotropic Media 5.1 Maxwell's Equations: Maxwell's equations permeability is isotropic, the last two of Maxwell's equa- tions can be combined to give the wave equation.8) 27 #12;28 CHAPTER 5. PLANE WAVES IN ISOTROPIC MEDIA Finally, using the identity ? ? A = ( · A)- 2

Palffy-Muhoray, Peter

92

Energy Content of Colliding Plane Waves using Approximate Noether Symmetries  

E-Print Network [OSTI]

This paper is devoted to study the energy content of colliding plane waves using approximate Noether symmetries. For this purpose, we use approximate Lie symmetry method of Lagrangian for differential equations. We formulate the first-order perturbed Lagrangian for colliding plane electromagnetic and gravitational waves. It is shown that in both cases, there does not exist

M. Sharif; Saira Waheed

2011-09-19T23:59:59.000Z

93

Optimization of angle of inclination of the hybrid photovoltaic-thermal solar collector using particle swarm optimization algorithm  

Science Journals Connector (OSTI)

In this paper a mathematical model is used to determine the solar radiation incident on an inclined surface and the optimum slope angles for each month season and year are calculated for solar hybrid collectors. We recommend on how the collected energy can be increased by varying the tilt angle. First we esteem the global solar radiation on a horizontal surface of a thermal photovoltaic hybrid collector (PVT) for a clear sky. The data set of the solar radiation at Ghardaa (Algeria) measured during 2013 was used to analyze the models of global solar radiation estimation. The models of performance are evaluated by using the coefficient of correlation (R2) the absolute average error skew (mean absolute error MABE) average quadratic error (mean square error RMSE) the percentage of the average error (MPE) and the percentage of average absolute error. Then the anisotropic and isotropic models that provide the most accurate estimation of the total solar radiation has been used to determine the optimum collector slope. Particle swarm optimization method was applied to obtain the tilt angle setting of the tilt angle of PVT collector. The objective was to improve the efficiency of PVT collector. The results show that these models used are very well designed. The coefficient of correlation (R2) varies from 0. 90 to 0. 99. For the percentage of errors of prediction (MABE and RMSE) lowered by 0.1 it is observed also that the angle of inclination of PVT collector takes different values during the year and that the collector received more solar energy compared to collector without optimal angle.

2014-01-01T23:59:59.000Z

94

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.

95

Analysis of a Fivefold Symmetric Superposition of Plane Waves  

E-Print Network [OSTI]

We show that a symmetric superposition of five standing plane waves can be expressed as an infinite series of terms of decreasing wavenumber, where each term is a product of five plane waves. We show that this series converges pointwise in R^2 and uniformly in any disk domain in R^2. Using this series, we provide a heuristic argument for why the locations of the local extrema of a symmetric superposition of five standing plane waves can be approximated by the vertices of a Penrose tiling.

Michael H. Schwarz; Robert A. Pelcovits

2012-03-17T23:59:59.000Z

96

Synergy of short gamma ray burst and gravitational wave observations: Constraining the inclination angle of the binary and possible implications for off-axis gamma ray bursts  

E-Print Network [OSTI]

Compact binary mergers are the strongest candidates for the progenitors of Short Gamma Ray Bursts (SGRBs). If a gravitational wave (GW) signal from the compact binary merger is observed in association with a SGRB, such a synergy can help us understand many interesting aspects of these bursts. We examine the accuracies with which a world wide network of gravitational wave interferometers would measure the inclination angle (the angle between the angular momentum axis of the binary and the observer's line of sight) of the binary. We compare the projected accuracies of GW detectors to measure the inclination angle of double neutron star (DNS) and neutron star-black hole (NS-BH) binaries for different astrophysical scenarios. We find that a 5 detector network can measure the inclination angle to an accuracy of $\\sim 5.1 (2.2)$ degrees for a DNS(NS-BH) system at 200 Mpc if the direction of the source as well as the redshift is known electromagnetically. We argue as to how an accurate estimation of the inclination angle of the binary can prove to be crucial in understanding off-axis GRBs, the dynamics and the energetics of their jets, and help the searches for (possible) orphan afterglows of the SGRBs.

K. G. Arun; Hideyuki Tagoshi; Chandra Kant Mishra; Archana Pai

2014-12-15T23:59:59.000Z

97

Synergy of short gamma ray burst and gravitational wave observations: Constraining the inclination angle of the binary and possible implications for off-axis gamma ray bursts  

Science Journals Connector (OSTI)

Compact binary mergers are the strongest candidates for the progenitors of short gamma ray bursts (SGRBs). If a gravitational wave signal from the compact binary merger is observed in association with a SGRB, such a synergy can help us understand many interesting aspects of these bursts. We examine the accuracies with which a worldwide network of gravitational wave interferometers would measure the inclination angle (the angle between the angular momentum axis of the binary and the observers line of sight) of the binary. We compare the projected accuracies of gravitational wave detectors to measure the inclination angle of double neutron star and neutron starblack hole binaries for different astrophysical scenarios. We find that a five-detector network can measure the inclination angle to an accuracy of ?5.1 (2.2) deg for a double neutron star (neutron starblack hole) system at 200Mpc if the direction of the source as well as the redshift is known electromagnetically. We argue as to how an accurate estimation of the inclination angle of the binary can prove to be crucial in understanding off-axis GRBs, the dynamics and the energetics of their jets, and help the searches for (possible) orphan afterglows of the SGRBs.

K.?G. Arun; Hideyuki Tagoshi; Archana Pai; Chandra Kant Mishra

2014-07-22T23:59:59.000Z

98

Preconditioning for the mixed formulation of linear plane elasticity  

E-Print Network [OSTI]

. An overlapping Schwarz preconditioner and a multigrid preconditioner for the discrete system are developed and analyzed. We start by introducing the mixed formulation (stress-displacement formulation) for the linear plane elasticity problem and its discretization...

Wang, Yanqiu

2005-11-01T23:59:59.000Z

99

Computational experience with general cutting planes for the Set ...  

E-Print Network [OSTI]

... Linear Programming, Integer Programming and Cutting Planes, Ph.D. Thesis, .... To this purpose, after a violated cut cT x ? d is found during the search tree,...

2007-09-02T23:59:59.000Z

100

Identification of MHF Fracture Planes and Flow Paths- a Correlation...  

Open Energy Info (EERE)

Identification of MHF Fracture Planes and Flow Paths- a Correlation of Well Log Data with Patterns in Locations of Induced Seismicity Jump to: navigation, search OpenEI Reference...

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

Gathering few fat mobile robots in the plane  

Science Journals Connector (OSTI)

Autonomous identical robots represented by unit discs move deterministically in the plane. They do not have any common coordinate system, do not communicate, do not have memory of the past and are totally asynchronous. Gathering such robots means forming ...

Jurek Czyzowicz; Leszek G?sieniec; Andrzej Pelc

2006-12-01T23:59:59.000Z

102

A Rigorous Analysis of Plane-Transformed Invisibility Cloaks  

E-Print Network [OSTI]

The electromagnetic characteristics of plane-transformed invisibility cloaks are quantitatively studied in this paper. We take elliptical cylindrical cloak as the example, and use an elliptical cylindrical wave expansion ...

Wu, Bae-Ian

103

Zero Energy of Plane-Waves for ELKOs  

E-Print Network [OSTI]

We consider the ELKO field in interaction through contorsion with its own spin density, and we investigate the form of the consequent autointeractions; to do so we take into account the high-density limit and find plane wave solutions: such plane waves give rise to contorsional autointeractions for which the Ricci metric curvature vanishes and therefore the energy density is equal to zero identically. Consequences are discussed.

Luca Fabbri

2011-02-23T23:59:59.000Z

104

THE CANADA-FRANCE ECLIPTIC PLANE SURVEY-FULL DATA RELEASE: THE ORBITAL STRUCTURE OF THE KUIPER BELT  

SciTech Connect (OSTI)

We report the orbital distribution of the trans-Neptunian objects (TNOs) discovered during the Canada-France Ecliptic Plane Survey (CFEPS), whose discovery phase ran from early 2003 until early 2007. The follow-up observations started just after the first discoveries and extended until late 2009. We obtained characterized observations of 321 deg{sup 2} of sky to depths in the range g {approx} 23.5-24.4 AB mag. We provide a database of 169 TNOs with high-precision dynamical classification and known discovery efficiency. Using this database, we find that the classical belt is a complex region with sub-structures that go beyond the usual splitting of inner (interior to 3:2 mean-motion resonance [MMR]), main (between 3:2 and 2:1 MMR), and outer (exterior to 2:1 MMR). The main classical belt (a = 40-47 AU) needs to be modeled with at least three components: the 'hot' component with a wide inclination distribution and two 'cold' components (stirred and kernel) with much narrower inclination distributions. The hot component must have a significantly shallower absolute magnitude (H{sub g} ) distribution than the other two components. With 95% confidence, there are 8000{sup +1800}{sub -1600} objects in the main belt with H{sub g} {<=} 8.0, of which 50% are from the hot component, 40% from the stirred component, and 10% from the kernel; the hot component's fraction drops rapidly with increasing H{sub g} . Because of this, the apparent population fractions depend on the depth and ecliptic latitude of a trans-Neptunian survey. The stirred and kernel components are limited to only a portion of the main belt, while we find that the hot component is consistent with a smooth extension throughout the inner, main, and outer regions of the classical belt; in fact, the inner and outer belts are consistent with containing only hot-component objects. The H{sub g} {<=} 8.0 TNO population estimates are 400 for the inner belt and 10,000 for the outer belt to within a factor of two (95% confidence). We show how the CFEPS Survey Simulator can be used to compare a cosmogonic model for the orbital element distribution to the real Kuiper Belt.

Petit, J.-M.; Rousselot, P.; Mousis, O. [Institut UTINAM, CNRS-UMR 6213, Observatoire de Besancon, BP 1615, 25010 Besancon Cedex (France); Kavelaars, J. J. [Herzberg Institute of Astrophysics, National Research Council of Canada, Victoria, BC V9E 2E7 (Canada); Gladman, B. J.; Jones, R. L.; Van Laerhoven, C. [Department of Physics and Astronomy, University of British Columbia, Vancouver, BC (Canada); Parker, J. Wm.; Bieryla, A. [Planetary Science Directorate, Southwest Research Institute, Boulder, CO 80302 (United States); Nicholson, P. [Department of Astronomy, Cornell University, Space Sciences Building, Ithaca, NY 14853 (United States); Mars, G. [Observatoire de la Cote d'Azur, BP 4229, F-06304 Nice Cedex 4 (France); Marsden, B.; Ashby, M. L. N. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Taylor, M.; Bernabeu, G. [Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 2Y2 (Canada); Benavidez, P.; Campo Bagatin, A. [Departamento de Fisica, Ingenieria de Sistemas y Teoria de la Senal, E.P.S.A., Universidad de Alicante, Apartado de Correos 99, Alicante 03080 (Spain)

2011-10-15T23:59:59.000Z

105

Superstrings and D-branes in a plane wave  

Science Journals Connector (OSTI)

We carefully analyze the supersymmetry algebra of closed strings and open strings in a type IIB plane wave background. We use eight-component chiral spinors, SO(8) chiral spinors, in the light-cone gauge to provide a useful basis for string field theory calculations in a plane wave. We consider the two classes of D-branes, D-branes, and give a worldsheet derivation of conserved supercurrents for all half Bogomolnyi-Prasad-Sommerfield (BPS) D-branes preserving 16 supersymmetries in the type IIB plane wave background. We exhaustively provide the supersymmetry algebra of the half BPS branes as well. We also point out that the supersymmetry algebra distinguishes the two SO(4) directions with different signs, which is consistent with the Z2 symmetry of the string action.

Jongwook Kim; Bum-Hoon Lee; Hyun Seok Yang

2003-07-08T23:59:59.000Z

106

On near-rings associated with generalized affine planes  

E-Print Network [OSTI]

ON NEAR-RINGS ASSOCIATED WITH GENERALIZED AFFINE PLANES A Thesis by NANCY JANE ARMENTROUT Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1971... Ma)or Subject: Mathematics ON NEAR-RINGS ASSOCIATED WITH GENERALIZED AI'FINE PLANES A Thesis NANCY JANE ARMENTROUT Approved as to style and content by: A, n. ;s-, . (Chairma of Committee) c ~ g~~+ (Head of Department) (Member) (Member) Mem...

Armentrout, Nancy Jane

1971-01-01T23:59:59.000Z

107

Interfacial Refraction Through Curved and Plane-Layered Media  

SciTech Connect (OSTI)

Two laser beam tracing codes, AXIAL and CYLINDER, have been written to determine a laser beam path through plane and cylindrical interfaces. For cylindrical interfaces, an equation set was derived which describes the path of the laser beam. For plane interfaces, it was not possible to derive a single equation set. Instead, it was necessary to divide the domain up into small elements or regions. The laser beam path was then determined by calculating the path of the laser beam through each region. AXIAL and CYLINDER can be used to determine where an LDA should be positioned so that velocity measurements can be made at a specified point.

Kehoe, A.B.

2001-07-17T23:59:59.000Z

108

Confinement and the confined-localized-orbital-plane-wave method  

Science Journals Connector (OSTI)

A mixed basis for electronic structure calculations has been constructed using a basis set consisting of localized orbitals confined to muffin-tin spheres and plane waves. The confinement smoothly suppresses the tails of atomic orbitals and hence eliminates multicenter integrals. From linear-muffin-tin orbital (LMTO) self-consistent potentials the bulk electronic structures of Cu and Si have been obtained as accurate as the original LMTO-type results. The energy-independent confined-localized-orbital-plane-wave basis functions enable a full solution without using linearization schemes.

C. M. J. Wijers; H. G. Bekker; N. E. Christensen

1995-09-15T23:59:59.000Z

109

Film cooling performance and heat transfer over an inclined film-cooled surface at different divergent angles with respect to highly turbulent mainstream  

SciTech Connect (OSTI)

Experiments have been performed to study and obtain the adiabatic wall film cooling effectiveness and the heat transfer over a film-cooled surface that is made inclined at various angles with respect to a highly turbulent flow. The vertical temperature distribution was measured to infer the flow structure and the rate of mixing of film jet with the freestream. The freestream turbulence intensity is controlled to range from 1.0% to 26.4%, the inclination or the divergent angle of the film-cooled surface ranges from 0 to 20 , the blowing parameter from 0.5 to 2.0. It is found that the mixing of the film jet with the freestream is significantly enhanced by both the freestream turbulence intensity and the divergent angle of the film-cooled surface, which leads to the decrease in the film cooling effectiveness and the increase in the heat transfer. However, the inclination angle has more effect on the film cooling performance while the turbulence intensity has more effect on the heat transfer under the film. More detailed discussion is presented. Correlations for both the film cooling effectiveness and the heat transfer under the film-cooled surface have been very successful and are provided. (author)

Yang, Chih-Sheng [Department of Computer Science and Information Engineering Far East University (China); Lin, C.L.; Gau, C. [Institute of Aeronautics and Astronautics, Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 70101 (China)

2008-05-15T23:59:59.000Z

110

Transition from in-plane to out-of-plane azimuthal enhancement inAu+Au collisions  

SciTech Connect (OSTI)

The incident energy at which the azimuthal distributions in semi-central heavy ion collisions change from in-plane to out-of-plane enhancement--E{sub tran} is studied as a function of mass of emitted particles, their transverse momentum and centrality for Au+Au collisions. The analysis is performed in a reference frame rotated with the sidewards flow angle ({Theta}{sub flow}) relative to the beam axis. A systematic decrease of E{sub tran} as function of mass of the reaction products, their transverse momentum and collision centrality is evidenced. The predictions of a microscopic transport model (IQMD) are compared with the experimental results.

Andronic, A.; Stoicea, G.; Petrovici, M.; Simion, V.; Crochet,P.; Alard, J.P.; Averbeck, R.; Barret, V.; Basrak, Z.; Bastid, N.; Bendarag, A.; Berek, G.; Caplar, R.; Devismes, A.; Dupieux, Dzelalija M.; Eskef, M.; Finck, Ch.; Fodor, Z.; Gobbi, A.; Grishkin, Y.; Hartmann,O.N.; Herrmann, N.; Hildenbrand, K.D.; Hong, B.; Kecskemeti, J.; Kim,Y.J.; Kirejczyk, M.; Korolija, M.; Kotte, R.; Kress, T.; Kutsche, R.; Lebedev, A.; Lee, K.S.; Leifels, Y.; Manko, V.; Merlitz, H.; Neubert, W.; Pelte, D.; Plettner, C.; Rami, F.; Resdorf, W.; de Schauenberg, B.; Schull, D.; Seres, Z.; Sikora, B.; Sim, K.S.; Siwek-Wilczynska, K.; Smolyankin, V.; Stockmeier, M.R.; Vasiliev, M.; Wagner, P.; Wisniewski,K.; Wohlfarth, D.; Yushmanov, I.; Zhilin, A.

2000-08-09T23:59:59.000Z

111

Magnetic bottles on the Poincar half-plane: spectral asymptotics  

E-Print Network [OSTI]

We consider a magnetic laplacian P(A) on the Poincar\\'e half-plane, when the magnetic field dA is infinite at infinity such that P(A) has pure discret spectrum. We give the asymptotic behavior of the counting function of the eigenvalues.

Abderemane Morame; Francoise Truc

2007-12-10T23:59:59.000Z

112

Comparison of different theories for focusing through a plane interface  

E-Print Network [OSTI]

Comparison of different theories for focusing through a plane interface S. H. Wiersma Department into an inhomogeneous medium. Another re- cently published study by Wiersma and Visser10 also took the Richards. It was shown indepen- dently by Wiersma and Visser10 that it is also possible to obtain the field in the second

Visser, Taco D.

113

Distribution of Grain Boundary Planes and Misorientations in Magnesium Oxide  

E-Print Network [OSTI]

Distribution of Grain Boundary Planes and Misorientations in Magnesium Oxide D.M. Saylor 1 , A distribution, magnesium oxide. Abstract. We have developed a technique that allows the geometry of polycrystalline magnesium oxide. Using these data, we have specified the distribution of grain boundaries within

Rohrer, Gregory S.

114

IRAN: laboratory test bench for hypertelescope pupil-plane recombination  

E-Print Network [OSTI]

IRAN: laboratory test bench for hypertelescope pupil-plane recombination F. Allouchea,b, F. Vakilib-Antipolis, CNRS UMR 6525 Parc Valrose, 06108 Nice Cedex 2, France ABSTRACT In 2004, our group proposed IRAN-apertures illuminated by laser sources are recombined using the IRAN scheme. The validation of the IRAN recombination

Liske, Jochen

115

Plane wave solution for elastic wave scattering by a heterogeneous ...  

E-Print Network [OSTI]

A plane-wave method for computing the three-dimensional scattering of propagating elastic waves ... boundary conditions also called linear slip interface conditions, and therefore, called the ... good agreement between measured waves and theoretical ..... tribution with a mean and a standard deviation of the com-.

2004-05-28T23:59:59.000Z

116

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":""}]}

117

On plane waves in diluted relativistic cold plasmas  

E-Print Network [OSTI]

We briefly report on some exact results [G. Fiore, arXiv:1312.4665 preprint, to appear in J. Phys. A] regarding plane waves in a relativistic cold plasma. If the plasma, initially at rest, is reached by a transverse plane electromagnetic travelling-wave, then its motion has a very simple dependence on this wave in the limit of zero density, otherwise can be determined by an iterative procedure whose accuracy decreases with time or the plasma density. Thus one can describe in particular the impact of a very intense and short laser pulse onto a plasma and determine conditions for the "slingshot effect" [G. Fiore, R. Fedele, U. De Angelis, arXiv:1309.1400 preprint] to occur. The motion in vacuum of a charged test particle subject to a wave of the same kind is also determined, for any initial velocity.

Gaetano Fiore

2014-05-01T23:59:59.000Z

118

Plane-parallel waves as duals of the flat background  

E-Print Network [OSTI]

We give a classification of non-Abelian T-duals of the flat metric in D=4 dimensions with respect to the four-dimensional continuous subgroups of the Poincare group. After dualizing the flat background, we identify majority of dual models as conformal sigma models in plane-parallel wave backgrounds, most of them having torsion. We give their form in Brinkmann coordinates. We find, besides the plane-parallel waves, several diagonalizable curved metrics with nontrivial scalar curvature and torsion. Using the non-Abelian T-duality, we find general solution of the classical field equations for all the sigma models in terms of d'Alembert solutions of the wave equation.

Ladislav Hlavaty; Ivo Petr

2014-12-03T23:59:59.000Z

119

DIFFERENCE OF COMPOSITION OPERATORS OVER THE HALF-PLANE  

E-Print Network [OSTI]

of the difference C - C of two composi- tion operators. In the setting of the unit disk D, all composition operators; Half-plane. B. R. Choe was supported by NRF(2013R1A1A2004736) of Korea and H. Koo was supported by NRF Bergman spaces over H. We first recall the spaces we work on. For > -1, put dA(z) := c(Im z) dA(z) where

Choe, Boo Rim

120

Dehlsen (TRL 5 6 System) - Aquantis C-Plane Ocean Current Turbine...  

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

Dehlsen (TRL 5 6 System) - Aquantis C-Plane Ocean Current Turbine Project Dehlsen (TRL 5 6 System) - Aquantis C-Plane Ocean Current Turbine Project Dehlsen (TRL 5 6 System) -...

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

E-Print Network 3.0 - abdominis plane block Sample Search Results  

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

conditions were randomized... moment for the ith plane; rij moment-arm for muscle j in the ith plane; and Fij vector force ... Source: Ohio State University, Department of...

122

In Plane Conductivity Testing, BekkTech LLC | Department of Energy  

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

In Plane Conductivity Testing, BekkTech LLC In Plane Conductivity Testing, BekkTech LLC High Temperature Membrane Working Group Meeting ACS, San Francisco 9-14, 2006, presented by...

123

Focal plane array with modular pixel array components for scalability  

DOE Patents [OSTI]

A modular, scalable focal plane array is provided as an array of integrated circuit dice, wherein each die includes a given amount of modular pixel array circuitry. The array of dice effectively multiplies the amount of modular pixel array circuitry to produce a larger pixel array without increasing die size. Desired pixel pitch across the enlarged pixel array is preserved by forming die stacks with each pixel array circuitry die stacked on a separate die that contains the corresponding signal processing circuitry. Techniques for die stack interconnections and die stack placement are implemented to ensure that the desired pixel pitch is preserved across the enlarged pixel array.

Kay, Randolph R; Campbell, David V; Shinde, Subhash L; Rienstra, Jeffrey L; Serkland, Darwin K; Holmes, Michael L

2014-12-09T23:59:59.000Z

124

On the Energy-Momentum Density of Gravitational Plane Waves  

E-Print Network [OSTI]

By embedding Einstein's original formulation of GR into a broader context we show that a dynamic covariant description of gravitational stress-energy emerges naturally from a variational principle. A tensor $T^G$ is constructed from a contraction of the Bel tensor with a symmetric covariant second degree tensor field $\\Phi$ and has a form analogous to the stress-energy tensor of the Maxwell field in an arbitrary space-time. For plane-fronted gravitational waves helicity-2 polarised (graviton) states can be identified carrying non-zero energy and momentum.

T. Dereli; R. W. Tucker

2004-01-20T23:59:59.000Z

125

A solvable many-body problem in the plane  

E-Print Network [OSTI]

A solvable many-body problem in the plane is exhibited. It is characterized by rotation-invariant Newtonian (``acceleration equal force'') equations of motion, featuring one-body (``external'') and pair (``interparticle'') forces. The former depend quadratically on the velocity, and nonlinearly on the coordinate, of the moving particle. The latter depend linearly on the coordinate of the moving particle, and linearly respectively nonlinearly on the velocity respectively the coordinate of the other particle. The model contains $2n^2$ arbitrary coupling constants, $n$ being the number of particles. The behaviour of the solutions is outlined; special cases in which the motion is confined (multiply periodic), or even completely periodic, are identified.

Francesco Calogero

1998-07-01T23:59:59.000Z

126

E-Print Network 3.0 - abdominis plane tap Sample Search Results  

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

loading. Sagittal plane rectus abdominis ... Source: Ohio State University, Department of Industrial, Welding, and Systems Engineering, Biodynamics Laboratories Collection:...

127

Solving mixed 0-1 knapsack problems using Fenchel cutting planes  

E-Print Network [OSTI]

Cutting-plane methods have shown their unique advantage in solving IP problems. In this research, a new algorithm (MIXCUT) is developed to generate the cutting planes for mixed 0-1 knapsack problems. The class of the cutting planes is called Fenchel...

Yan, Xiao-Qing

2012-06-07T23:59:59.000Z

128

Efficient Macromodeling of Power Distribution Planes using Delay Extraction based Transmission Line Representation  

E-Print Network [OSTI]

Efficient Macromodeling of Power Distribution Planes using Delay Extraction based Transmission Line plane structures are based on discretization of the plane into a grid of transmission lines [3]-[6]. Macromodeling the transmission line network using conventional lumped RLGC elements [4]- [6] can provide

Roy, Sourajeet

129

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

130

White dwarfs in the European Galactic Plane Surveys (EGAPS)  

E-Print Network [OSTI]

The space density of white dwarfs is highly uncertain even nearby. This results from the fact that the known sample of white dwarfs is largely incomplete in part because most white dwarfs have been discovered as by-products in non-dedicated surveys. In order to obtain more accurate white dwarf space densities and scale heights we must build up a complete sample of white dwarfs. The European Galactic Plane Surveys (EGAPS) are the best database to search for white dwarfs as they will provide broad band (U, g', r', i') and narrow band (Halpha and HeI) measurements for one per cent of all the stars in the Galaxy. By looking at the Galactic Plane, where most stars are, we ensure that we are obtaining a complete sample. The space densities obtained from EGAPS can then be compared with those found in high latitude surveys such as the Sloan Digital Sky Survey (SDSS). The methods used to identify white dwarfs using the colours available in EGAPS are described and some preliminary results presented.

L. Morales-Rueda; P. J. Groot; R. Napiwotzki; J. Drew; the EGAPS collaboration

2006-10-24T23:59:59.000Z

131

Measure Guideline: Guidance on Taped Insulating Sheathing Drainage Planes  

SciTech Connect (OSTI)

This guide provides information and recommendations to the following groups: insulation contractors; general contractors; builders; home remodelers; mechanical contractors; and homeowners, as a guide to the work that needs to be done. The order of work completed during home construction and retrofit improvements is important. Health and safety issues must be addressed first and are more important than durability issues. And durability issues are more important than saving energy. Not all techniques can apply to all houses. Special conditions will require special action. Some builders or homeowners will wish to do more than the important but basic retrofit strategies outlined by this guide. The following are best practice and product recommendations from the interviewed contractors and homebuilders who collectively have a vast amount of experience. Three significant items were discussed with the group which are required to make taped insulating sheathing a simple, long term, and durable drainage plane: 1. Horizontal joints should be limited or eliminated wherever possible; 2. Where a horizontal joint exists use superior materials; 3. Frequent installation inspection and regular trade training are required to maintain proper installation. Section 5 of this measure guideline contains the detailed construction procedure for the three recommended methods to effectively seal the joints in exterior insulating sheathing to create a simple, long term, and durable drainage plane.

Grin, A.; Lstiburek, J.

2014-09-01T23:59:59.000Z

132

Effect of Bubbles on Liquid Nitrogen Breakdown in Plane-Plane Electrode Geometry From 100-250 kPa  

SciTech Connect (OSTI)

Liquid nitrogen (LN(2)) is used as the cryogen and dielectric for many high temperature superconducting, high voltage applications. When a quench in the superconductor occurs, bubbles are generated which can affect the dielectric breakdown properties of the LN(2). Experiments were performed using plane-plane electrode geometry where bubbles were introduced into the gap through a pinhole in the ground electrode. Bubbles were generated using one or more kapton heaters producing heater powers up to 30 W. Pressure was varied from 100-250 kPa. Breakdown strength was found to be relatively constant up to a given heater power and pressure at which the breakdown strength drops to a low value depending on the pressure. After the drop the breakdown strength continues to drop gradually at higher heater power. This is particularly illustrated at 100 kPa. After the drop in breakdown strength the breakdown is believed to be due to the formation of a vapor bridge. Also the heater power at which the breakdown strength changes from that of LN(2) to that of gaseous nitrogen increases with increasing pressure. The data can provide design constraints for high temperature superconducting fault current limiters (FCLs) so that the formation of a vapor bridge can be suppressed or avoided.

Sauers, Isidor [ORNL; James, David Randy [ORNL; Tuncer, Enis [ORNL; Polyzos, Georgios [ORNL; Pace, Marshall O [ORNL

2011-01-01T23:59:59.000Z

133

An analysis of periodic heat flow through a plane slab  

E-Print Network [OSTI]

slices of thickness ax = L/5 and. two half-slices of tJ:ickness ax/2 = L/10 as shown in I~'igure 1, and the center plane of eacn slice was indexed. o 1 (~6 X 2 nx i ax+ t t 0 DX bx Dx ~ax ? ~- Ax Dx ' CFOSS SECTION OP SLAB DIVID' 'D INTO SLIC... because it is always zero. tl t2 t5 t4 t. 0 1 2 5 6 1000. 0 1150. 5 1258. 8 1582. 6 1500. 0 1608, 7 1707. 1 0 200. 0 226. 1 $15. 8 561. 7 /t )8 0 0 80. 0 106. 4 160. 4 1 / 0 0 0 $2. 0 4o. 0 7'-' 1 0 0 0 0 12. 8 0 0 0 0 0...

Gibson, Daniel Morgan

1958-01-01T23:59:59.000Z

134

THE BOLOCAM GALACTIC PLANE SURVEY: SURVEY DESCRIPTION AND DATA REDUCTION  

SciTech Connect (OSTI)

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

135

On triangulations of the plane by pencils of conics.II  

Science Journals Connector (OSTI)

The present work continues our previous paper in which all possible triangulations of the plane using three pencils of circles were listed. In the present article we find all projectively distinct triangulations of the plane by pencils of conics that are obtained by projecting regular three-webs, cut out on anondegenerate cubic surface by three pencils of planes, whose axes lie on this surface. Bibliography: 6 titles.

V B Lazareva; A M Shelekhov

2013-01-01T23:59:59.000Z

136

The fundamental plane of clusters of galaxies: a quest for understanding cluster dynamics and morphology  

E-Print Network [OSTI]

We discuss implications of the fundamental plane parameters of clusters of galaxies derived from combined optical and X-ray data of a sample of 78 nearby clusters. In particular, we investigate the dependence of these parameters on the dynamical state of the cluster. We introduce a new concept of allocation of the fundamental plane of clusters derived from their intrinsic morphological properties, and put some theoretical implications of the existence of a fundamental plane into perspective.

Christoph Fritsch; Thomas Buchert

1999-03-10T23:59:59.000Z

137

Ascent performance feasibility of the national aerospace plane  

SciTech Connect (OSTI)

The national aerospace plane (NASP) is a proposed hypervelocity research vehicle which must take-off horizontally, achieve orbital speed, and then land horizontally. Its configuration is dominated by the powerplant, which includes the combination of turbojet engines for flight at subsonic speeds and low supersonic speeds, ramjet engines for flight at high supersonic speeds, scramjet engines for flight at hypersonic speeds, and rocket engines for flight at near-orbital speeds. Optimal trajectories are studied for a given NASP configuration, the so-called general hypersonic aerodynamics model example, under the assumption that the NASP is controlled via angle of attack and power setting. Three powerplant models are considered: (E1) and (E2) are turbojet, ramjet, scramjet combinations; (E3) is a turbojet, ramjet scramjet, rocket combination, with the rocket mode starting at M = 15. Realistic constraints are imposed on the peak dynamic pressure, peak heating rate, and peak tangential acceleration. Under this scenario, the time history of the controls is optimized simultaneously with the switch times from one engine mode to the next. The optimization criterion is the total mass of fuel required to achieve orbital speed. The optimization study employs the sequential gradient-restoration algorithm for optimal control problems.

Miele, A.; Lee, W.Y.; Wu, G.D. [Rice Univ., Houston, TX (United States)

1994-12-31T23:59:59.000Z

138

Improved beam quality from a high energy optical parametric oscillator using crystals with orthogonal critical planes  

Science Journals Connector (OSTI)

We demonstrate with simulations and experiments that an optical parametric oscillator using two different crystals with orthogonal walk-off planes can generate a symmetric,...

Farsund, ystein; Arisholm, Gunnar; Rustad, Gunnar

2010-01-01T23:59:59.000Z

139

Optimum classification of correlation-plane data by Bayesian decision theory  

Science Journals Connector (OSTI)

A multimodal model for correlation-plane distributions generated by composite filters is presented. From this model a statistical classifier referred to as a composite Bayesian...

Draayer, Bret F; Carhart, Gary W; Giles, Michael K

1994-01-01T23:59:59.000Z

140

Vortex shedding from square plates near a ground plane: an experimental study.  

E-Print Network [OSTI]

??Vortex shedding frequencies were obtained experimentally for square plates near a ground plane in the Texas Tech wind tunnel. These frequencies, in the form of (more)

Matty, Rosemary Ricohermoso

1979-01-01T23:59:59.000Z

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.


141

On the energy transported by exact plane gravitational-wave solutions  

E-Print Network [OSTI]

The energy and momentum transported by exact plane gravitational-wave solutions of Einstein equations are computed using the teleparallel equivalent formulation of Einstein's theory. It is shown that these waves transport neither energy nor momentum. A comparison with the usual linear plane gravitational-waves solution of the linearized Einstein equation is presented.

Yuri N. Obukhov; J. G. Pereira; Guillermo F. Rubilar

2009-09-24T23:59:59.000Z

142

Geodesic Completeness for Sobolev Metrics on the Space of Immersed Plane Curves  

E-Print Network [OSTI]

Geodesic Completeness for Sobolev Metrics on the Space of Immersed Plane Curves Martins Bruveris on the space of immersed plane curves. We show that the geodesic equation for Sobolev-type met- rics is geodesically com- plete. We find lower bounds for the geodesic distance in terms of curvature and its

Michor, Peter W.

143

Vortices and Rossby waves in cylinder wakes on a parabolic -plane observed by altimetric imaging velocimetry  

E-Print Network [OSTI]

, geostrophic and gradient wind velocity, and potential vorticity fields with very high spatial resolutionVortices and Rossby waves in cylinder wakes on a parabolic -plane observed by altimetric imaging in the wake of a circular cylinder are investigated in a rotating parabolic polar -plane fluid. This system

Afanassiev, Iakov

144

Cryogenic focal plane flatness measurement with optical zone slope Jerry Edelstein1  

E-Print Network [OSTI]

Cryogenic focal plane flatness measurement with optical zone slope tracking Jerry Edelstein1 to determine the surface flatness of a cryogenic sensor array developed for the JDEM mission. Large focal such as JDEM, WFIRST, or EUCLID must operate at cryogenic temperatures while maintaining focal plane flatness

California at Berkeley, University of

145

Tracking planes in omnidirectional stereovision Guillaume Caron, Eric Marchand and El Mustapha Mouaddib  

E-Print Network [OSTI]

Tracking planes in omnidirectional stereovision Guillaume Caron, Eric Marchand and El Mustapha laboratory, Amiens, FRANCE; e-mail: {guillaume.caron, mouaddib}@u-picardie.fr Eric Marchand is with Universit´e de Rennes 1, IRISA, INRIA Lagadic, Rennes, France; e-mail: eric.marchand@irisa.fr in the image plane

Boyer, Edmond

146

Image interpolation and denoising for division of focal plane sensors using  

E-Print Network [OSTI]

Image interpolation and denoising for division of focal plane sensors using Gaussian Processes Elad acquisition as most digital cameras are composed of a 2D grid of heterogeneous imag- ing sensors. Current of focal plane polariza- tion sensors. The sensors capture only partial information of the true scene

Columbia University

147

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

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

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

148

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...

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

2006-01-01T23:59:59.000Z

149

Reflection and refraction of antiplane shear waves at a plane boundary between viscoelastic anisotropic media  

Science Journals Connector (OSTI)

...Wavefronts in dissipative anisotropic media: comparison of the...at a plane boundary between anisotropic media. J. Acoust. Soc...1987 Physical properties of shale at temperature and pressure...waves and cylindrical waves in anisotropic anelastic media. J. Geophys...

1997-01-01T23:59:59.000Z

150

Expressions du potentiel lectrostatique pour des systmes symtrie plane et charge d'espace nulle  

E-Print Network [OSTI]

Wallington [1] font une étude comparative, pour les géométries à symétries plane et de révolution, des

Boyer, Edmond

151

Convective heat transfer in a locally heated plane incompressible fluid layer  

Science Journals Connector (OSTI)

The problem of convection in a plane horizontal layer of incompressible fluid with rigid boundaries when the temperature is ... . Together with the wellknown solutions which describe heat transfer for the linear ...

S. N. Aristov; K. G. Shvarts

2013-05-01T23:59:59.000Z

152

Design of a high speed planing hull with a cambered step and surface piercing hydrofoils  

E-Print Network [OSTI]

Design of a high speed planing hull is analyzed by implementing a cambered step and stem, surface piercing hydrofoils, commonly known as a Dynaplane hull. This configuration combines the drag reduction benefits of a stepped ...

Faison, Leon Alexander

2014-01-01T23:59:59.000Z

153

Determination of fault planes in a complex aftershock sequence using two-dimensional slip inversion  

Science Journals Connector (OSTI)

......of fault plane. Events A and B are the largest in a group of aftershocks located vertically beneath the mapped...1995. Broadband analysis of the 21 September, 1993, Klamath Falls earthquake sequence, Geophys. Res. Lett., 22, 997......

Rachel E. Abercrombie; Stephen Bannister; Aasha Pancha; Terry H. Webb; Jim J. Mori

2001-07-01T23:59:59.000Z

154

E-Print Network 3.0 - annular plane systolic Sample Search Results  

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

and spinal canal were created. CSF flow during systole and diastole were... a PCMR cine image series is acquired in a single axial plane, the flow pattern and flow ... Source:...

155

E-Print Network 3.0 - angle measurement planes Sample Search...  

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

AND TIME-REVERSAL OF PLANE... angle to measure the speed of sound in solids without measuring waves that have passed through the solid... t when attacking the interface with...

156

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

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

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

157

Optical links for cryogenic focal-plane array readout Alan R. Johnston, Duncan TH. Liu, Siamak Forouhar,  

E-Print Network [OSTI]

Optical links for cryogenic focal-plane array readout Alan R. Johnston, Duncan TH. Liu, Siamak cryogenic focaiplane arrays must minimize power dissipation on the focal.plane. Since cooler power efficiency is low at cryogenic temperatures, reduction of focal-plane power has strong leverage in re. ducing

Fossum, Eric R.

158

A two-axis in-plane motion measurement system based on optical beam deflection  

SciTech Connect (OSTI)

Measurement of in-plane motion with high resolution and large bandwidth enables model-identification and real-time control of motion-stages. This paper presents an optical beam deflection based system for measurement of in-plane motion of both macro- and micro-scale motion stages. A curved reflector is integrated with the motion stage to achieve sensitivity to in-plane translational motion along two axes. Under optimal settings, the measurement system is shown to theoretically achieve sub-angstrom measurement resolution over a bandwidth in excess of 1 kHz and negligible cross-sensitivity to linear motion. Subsequently, the proposed technique is experimentally demonstrated by measuring the in-plane motion of a piezo flexure stage and a scanning probe microcantilever. For the former case, reflective spherical balls of different radii are employed to measure the in-plane motion and the measured sensitivities are shown to agree with theoretical values, on average, to within 8.3%. For the latter case, a prototype polydimethylsiloxane micro-reflector is integrated with the microcantilever. The measured in-plane motion of the microcantilever probe is used to identify nonlinearities and the transient dynamics of the piezo-stage upon which the probe is mounted. These are subsequently compensated by means of feedback control.

Sriramshankar, R.; Mrinalini, R. Sri Muthu; Jayanth, G. R. [Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012 (India)] [Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012 (India)

2013-10-15T23:59:59.000Z

159

Levitation Performance of Bulk High Temperature Superconductor Above the Permanent Magnet Guideway atDifferent Temperatures  

Science Journals Connector (OSTI)

The levitation performance of a high temperature superconducting (HTS) Maglev system was investigated at different temperatures for HTS Maglev vehicle application. Using a cryogenic measurement system, we stud...

Hua Jing; Suyu Wang; Ming Jiang; Jiasu Wang

2010-12-01T23:59:59.000Z

160

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

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

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

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

How and why to think about scattering in terms of wave packets instead of plane waves  

E-Print Network [OSTI]

We discuss "the plane wave approximation" to quantum mechanical scattering using simple one-dimensional examples. The central points of the paper are that (a) plane waves should be thought of as infinitely wide wave packets, and (b) the calculations of reflection and transmission probabilities $R$ and $T$ in standard textbook presentations involve an approximation which is almost never discussed. We argue that it should be discussed explicitly, and that doing so provides a simple and intuitively revealing alternative way to derive and understand certain formulas. Using an under-appreciated exact expression for wave packet scattering probabilities, we calculate, for two standard examples, expressions for $R$ and $T$ for an incident Gaussian wave packet. Comparing these results to the corresponding ones calculated using the plane wave approximation helps illuminate the domain of applicability of that approximation.

Travis Norsen; Joshua Lande; S. B. McKagan

2009-04-18T23:59:59.000Z

162

Disappearance of rotational flow and reaction plane dispersions in Kr+Au collisions  

Science Journals Connector (OSTI)

Two-particle azimuthal correlations have been used to extract reaction plane dispersion free triple-differential cross sections for d, t, and ? particles for the midcentral collisions of 84Kr+197Au at E/A=35, 55, and 70 MeV. Both experimental measurements and extrapolations from lower incident energies suggest that rotational flow disappears at E/A?100 MeV for light charged particles and that reaction plane dispersions introduce large uncertainties in extracting the disappearance of rotational flow.

W. Q. Shen; M. B. Tsang; N. Carlin; R. J. Charity; J. Feng; C. K. Gelbke; W. C. Hsi; M. J. Huang; G. J. Kunde; M-C. Lemaire; M. A. Lisa; W. G. Lynch; U. Lynen; Y. G. Ma; G. F. Peaslee; L. Phair; J. Pochodzalla; H. Sann; C. Schwarz; L. G. Sobotka; R. T. de Souza; S. R. Souza; W. Trautmann; C. Williams

1998-03-01T23:59:59.000Z

163

Subcritical finite-amplitude solutions in plane Couette flow of visco-elastic fluids  

E-Print Network [OSTI]

Plane Couette flow of visco-elastic fluids is shown to exhibit a purely elastic subcritical instability in spite of being linearly stable. The mechanism of this instability is proposed and the nonlinear stability analysis of plane Couette flow of the Upper-Convected Maxwell fluid is presented. It is found that above the critical Weissenberg number, a small finite-size perturbation is sufficient to create a secondary flow, and the threshold value for the amplitude of the perturbation decreases as the Weissenberg number increases. The results suggest a scenario for weakly turbulent visco-elastic flow which is similar to the one for Newtonian fluids as a function of Reynolds number.

Alexander N. Morozov; Wim van Saarloos

2004-11-10T23:59:59.000Z

164

Semianalytic Monte Carlo calculation of reflected and transmitted radiance in a plane parallel atmosphere  

E-Print Network [OSTI]

=T Fig. 1. Pictorial representation of plane parallel atmosphere geometry. is m dr 0 where n =cos 8 n n and m is the albedo for single scattering. The probability of pas- 0 sage from r' to r without further scattering is exp [-(r' ? r)/n ]. n+1... Therefore, the probability of passage through any plane r after n+1 collisions, is a product of these three probabilities. p (r') exp [-(r' ? r)/n ] dr' n+1 n After integrating over all possible values of r' between 0 and for n & 0, an equation...

Moffitt, John Russell

2012-06-07T23:59:59.000Z

165

Plane of nutrition as influencing reaction of breeding cows to high salt intake  

E-Print Network [OSTI]

PLANE OF NUTR~T~ON AS INFTUENCTNG REACTION OF BREWING CONS TO HIGH SAT T INTAKE A Thesis Louis Vaughn Sells August 1951 PLANK OF NUTRITION AS INFI UvNCrNr. REACTION OF RREEDINO COWS TO HIGH SALT INTAKE A Thes1s I ou is Vaughn S e 1 1... s August 1951 Ap oved as to sty d content. C 1rman of Committe PLANE OF NUTRITION AS IN&LU:NCING REACTION OF 13REEDING COWS TO HIGH SALT INTAKE A Thesis Submitted to the Faculty of the Agricultural and Mechanical College of Texas in Partial Fulf11...

Sells, Louis Vaughn

2012-06-07T23:59:59.000Z

166

Shell model in the complex energy plane and two-particle resonances  

Science Journals Connector (OSTI)

An implementation of the shell-model to the complex energy plane is presented. The representation used in the method consists of bound single-particle states, Gamow resonances and scattering waves on the complex energy plane. Two-particle resonances are evaluated, and their structure in terms of the single-particle degrees of freedom is analyzed. It is found that two-particle resonances are mainly built upon bound states and Gamow resonances, but the contribution of the scattering states is also important.

R. Id Betan; R. J. Liotta; N. Sandulescu; T. Vertse

2003-01-31T23:59:59.000Z

167

RIGID FLAT WEBS ON THE PROJECTIVE PLANE DAVID MARIN AND JORGE VITORIO PEREIRA  

E-Print Network [OSTI]

RIGID FLAT WEBS ON THE PROJECTIVE PLANE DAVID MAR´IN AND JORGE VIT´ORIO PEREIRA Abstract the invitation of CRM at Bellaterra in July 2010. 1 #12;2 DAVID MAR´IN AND JORGE VIT ´ORIO PEREIRA for a generic

Pereira, Jorge Vitório

168

SUBCRITICAL INSTABILITIES IN PLANE COUETTE FLOW OF VISCO-ELASTIC FLUIDS  

E-Print Network [OSTI]

SUBCRITICAL INSTABILITIES IN PLANE COUETTE FLOW OF VISCO-ELASTIC FLUIDS Alexander N. Morozov of an eigenfunction of the linearized equations of motion becomes subcritically unstable, and the threshold value, subcritical instabilities, amplitude equation Introduction In the last decades, stability of flows of polymers

van Saarloos, Wim

169

CO (3 2) HIGH-RESOLUTION SURVEY OF THE GALACTIC PLANE: R1  

SciTech Connect (OSTI)

We present the first release (R1) of data from the CO High-Resolution Survey (COHRS), which maps a strip of the inner Galactic plane in {sup 12}CO (J = 3 ? 2). The data are taken using the Heterodyne Array Receiver Programme on the James Clerk Maxwell Telescope (JCMT) in Hawaii, which has a 14 arcsec angular resolution at this frequency. When complete, this survey will cover |b| ? 0.5 between 10 < l < 65. This first release covers |b| ? 0.5 between 10.25 < l < 17.5 and 50.25 < l < 55.25, and |b| ? 0.25 between 17.5 < l < 50.25. The data are smoothed to a velocity resolution of 1 km s{sup 1}, a spatial resolution of 16 arcsec and achieve a mean rms of ?1 K. COHRS data are available to the community online at http://dx.doi.org/10.11570/13.0002. In this paper we describe the data acquisition and reduction techniques used and present integrated intensity images and longitude-velocity maps. We also discuss the noise characteristics of the data. The high resolution is a powerful tool for morphological studies of bubbles and filaments while the velocity information shows the spiral arms and outflows. These data are intended to complement both existing and upcoming surveys, e.g., the Bolocam Galactic Plane Survey (BGPS), ATLASGAL, the Herschel Galactic Plane Survey (Hi-GAL) and the JCMT Galactic Plane Survey with SCUBA-2 (JPS)

Dempsey, J. T.; Thomas, H. S.; Currie, M. J., E-mail: j.dempsey@jach.hawaii.edu, E-mail: h.thomas@jach.hawaii.edu, E-mail: m.currie@jach.hawaii.edu [Joint Astronomy Centre, 660 N. Aohoku Place, Hilo, HI 96720 (United States)

2013-11-01T23:59:59.000Z

170

Magnetic bottles on the Poincar\\'e half-plane: spectral asymptotics  

E-Print Network [OSTI]

We consider a magnetic laplacian P(A) on the Poincar\\'e half-plane, when the magnetic field dA is infinite at infinity such that P(A) has pure discret spectrum. We give the asymptotic behavior of the counting function of the eigenvalues.

Morame, Abderemane

2007-01-01T23:59:59.000Z

171

The Constellation-X RGS options: Raytrace Modeling of the Off-plane Gratings  

E-Print Network [OSTI]

The Constellation-X RGS options: Raytrace Modeling of the Off-plane Gratings K.A. Flanagan, J The Reflection Grating Spectrometer of the Constellation-X mission has two strong candidate configurations resolving powers in excess of 1000 (defined with half-energy width) are achievable for sufficiently long

172

Propagation of harmonic plane waves in a general anisotropic porous solid  

Science Journals Connector (OSTI)

......harmonic plane waves in a general anisotropic porous solid M. D. Sharma...propagation is studied in a general anisotropic poroelastic solid. The presence...upper crust. Anisotropy in shales is an important issue in the...the mechanical behaviour of anisotropic porous solids is important......

M. D. Sharma

2008-03-01T23:59:59.000Z

173

Numerical simulations of heat transfer in plane channel flow Najla EL GHARBI 1, 3, a  

E-Print Network [OSTI]

Numerical simulations of heat transfer in plane channel flow Najla EL GHARBI 1, 3, a , Rafik ABSI 2 abenzaoui@gmail.com Keywords: turbulent flows, heat transfer, forced convection, low Reynolds number model data for Re = 150. Introduction Turbulent flow with heat transfer mechanism is of great importance from

Paris-Sud XI, Université de

174

PSI of the Internal Tide on a ? Plane: Flux Divergence and Near-Inertial Wave Propagation  

Science Journals Connector (OSTI)

The dynamics of a forced, low-mode oceanic internal tide propagating poleward on a ? plane are investigated numerically. The focus is on the transfer of energy from the tide to near-inertial oscillations (NIOs) initiated by a weakly nonlinear ...

J. Hazewinkel; K. B. Winters

2011-09-01T23:59:59.000Z

175

Estimation of 5-min solar global irradiation on tilted planes by ANN method in Bouzareah, Algeria  

E-Print Network [OSTI]

], three main reasons make it impossible to develop a simple model for converting horizontal global solar surface The solar radiation arriving on a tilted collector has, most of the time, a beam component (nilEstimation of 5-min solar global irradiation on tilted planes by ANN method in Bouzareah, Algeria K

Paris-Sud XI, Université de

176

The singularity at the tip of the rising plane bubble: The case of nonzero surface tension  

E-Print Network [OSTI]

The singularity at the tip of the rising plane bubble: The case of nonzero surface tension Prabir pointed bubble in the presenceof surface tension. These bubbles have been recently obtained by Vanden to find the apexangle as a function of the speedof the bubbles for a fixed value of surface tension

Daripa, Prabir

177

On the theory of type-I superconductor surface tension and twinning-plane-superconductivity  

E-Print Network [OSTI]

447 On the theory of type-I superconductor surface tension and twinning-plane-superconductivity T du paramètre de Landau-Ginsburg 03BA est trouvée pour la tension de surface des supraconducteurs de. Abstract. 2014 A correction is found to the surface tension in type-I superconductors which is proportional

Boyer, Edmond

178

Hydrodynamics of high speed planing hulls with partially ventilated bottom and hydrofoils  

E-Print Network [OSTI]

The influence of a cambered shaped bottom step on the performance of sea going V-stepped planing hulls is investigated using numerical methods. The shape of the step was designed to decrease the Drag/Lift ratio of the hull ...

Sheingart, Zvi

2014-01-01T23:59:59.000Z

179

Advantages of a PCE-based Control Plane for LISP Alberto Castro  

E-Print Network [OSTI]

Advantages of a PCE-based Control Plane for LISP Alberto Castro , Martin German , Xavi Masip- ported by an architecture that borrows concepts from both the Path Computation Element (PCE the destination EID address; and (iii) our approach can blend IRC with the PCE capabilities, to perform up- stream

Yannuzzi Sanchez, Marcelo

180

Design and performance evaluation of an OpenFlow-based control plane for software-  

E-Print Network [OSTI]

. Muñoz, "Control plane techniques for elastic optical networks: GMPLS/PCE vs OpenFlow," in IEEE Global. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, "Experimental assessment of a combined PCE, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, "GMPLS/PCE control of flexi-grid DWDM optical

Yoo, S. J. Ben

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.


181

Search for star clusters close to the Galactic plane with DENIS  

E-Print Network [OSTI]

An automated search for star clusters close to the Galactic plane (|b| web site as embedded clusters in HII regions. Extinction in the field and in front of the clusters are estimated using a model of population synthesis. We present the method and give the properties of these clusters.

C. Reyle; A. C. Robin

2002-01-04T23:59:59.000Z

182

Angle-Based Methods for Mobile Robot Navigation: Reaching the Entire Plane  

E-Print Network [OSTI]

pixel could be the robot's goal, and is painted gray if it is reachable by (left) the basic control lawAngle-Based Methods for Mobile Robot Navigation: Reaching the Entire Plane Rice University.rice.edu argyros@ics.forth.gr Abstract-- Popular approaches for mobile robot navigation involve range information

Trahanias, Panos

183

Angle-Based Methods for Mobile Robot Navigation: Reaching the Entire Plane  

E-Print Network [OSTI]

could be the robot's goal, and is painted gray if it is reachable by (left) the basic control lawAngle-Based Methods for Mobile Robot Navigation: Reaching the Entire Plane Kostas E. Bekris1 for mobile robot navigation involve range information and metric maps of the workspace. For many sensors

Trahanias, Panos

184

The equilibrium crystal shape of strontium titanate and its relationship to the grain boundary plane distribution  

E-Print Network [OSTI]

1 The equilibrium crystal shape of strontium titanate and its relationship to the grain crystal shape (ECS) of a model system, strontium titanate, is compared with the grain boundary plane distribution (GBPD) as a function of temperature. Strontium titanate has a pronounced surface energy anisotropy

Rohrer, Gregory S.

185

The equilibrium crystal shape of strontium titanate and its relationship to the grain boundary plane distribution  

E-Print Network [OSTI]

The equilibrium crystal shape of strontium titanate and its relationship to the grain boundary system, strontium titanate, is compared with the grain boundary plane dis- tribution (GBPD) as a function of temperature. Strontium titanate has a pronounced surface energy anisotropy and a grain growth anomaly

Rohrer, Gregory S.

186

Automatic Bilateral Symmetry Midsagittal Plane Extraction from Pathological 3D Neuroradiological Images  

E-Print Network [OSTI]

, bleed, stroke of the human brain can be determined by a symmetry-based analysis of neural scans showing the brain's 3D internal structure. Detecting departures of this internal structure from its normal bilateral the ideal symmetry plane midsagittalwith respect to which the brain is invariant under re ection

187

Panoramic-View-and Epipolar-Plane-Image Understandings for Street-Parking Vehicle Detection  

E-Print Network [OSTI]

Panoramic-View- and Epipolar-Plane- Image Understandings for Street-Parking Vehicle Detection variation from slope of detected edges, street-parking vehicles can be detected. In our experiments. Information about street-parking vehicles is useful for re-planning roads and traffic system. In Japan, street

Ikeuchi, Katsushi

188

BETTI NUMBERS OF PLANE ALGEBRAIC CURVES STEFAN FRIEDL, CONSTANCE LEIDY AND LAURENTIU MAXIM  

E-Print Network [OSTI]

L2 ­BETTI NUMBERS OF PLANE ALGEBRAIC CURVES STEFAN FRIEDL, CONSTANCE LEIDY AND LAURENTIU MAXIM of the L2 ­Betti numbers b (2) p (Cn \\ A, id) is non­zero. We will prove an analogous statement of L2 ­Betti numbers. 1. Introduction Let X be any topological space and : 1(X) a homomorphism

Leidy, Constance

189

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS  

E-Print Network [OSTI]

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS V. A numerical solutions of Bona-Smith systems with analogous solutions of the BBM-BBM system. 1 Introduction In this paper we will study the Boussinesq system t + · v + · v - bt = 0, vt + + 1 2 |v|2 + c - bvt = 0, (1

Paris-Sud XI, Université de

190

Energy-Delay Trade-off of Wireless Data Collection in the Plane  

E-Print Network [OSTI]

Energy-Delay Trade-off of Wireless Data Collection in the Plane Mihaela Mitici , Jasper Goseling and the energy needed by the devices to transmit their observations. Fundamental bounds on the energy-delay trade and ii) the transmission energy used by the wireless devices to transmit their observations, which

Boucherie, Richard J.

191

Demonstrations: blocks on planes, scales, to find coefficients of static and kinetic friction  

E-Print Network [OSTI]

Demonstrations: ·blocks on planes, scales, to find coefficients of static and kinetic friction Text: Fishbane 5-1, 5-2 Problems: 18, 21, 28, 30, 34 from Ch. 5 What's important: ·frictional forces ·coefficients of static and kinetic friction Friction Where objects move in contact with other objects, we know

Boal, David

192

Restricted BPA: Applying Ball-Pivoting on the Plane Esdras Medeiros  

E-Print Network [OSTI]

Restricted BPA: Applying Ball-Pivoting on the Plane Esdras Medeiros , Luiz Velho and H triangulation method based on the ball-pivoting algorithm (BPA). The BPA is an interesting advancing front the BPA on them assuming that they have a constant third coordinate. We show that such geometrical

193

Plane wave solution for elastic wave scattering by a heterogeneous fracture  

E-Print Network [OSTI]

Plane wave solution for elastic wave scattering by a heterogeneous fracture Seiji Nakagawa,a) Kurt for computing the three-dimensional scattering of propagating elastic waves by a planar fracture with heterogeneous fracture compliance distribution is presented. This method is based upon the spatial Fourier

Santos, Juan

194

Rhines scale and spectra of the -plane turbulence with bottom drag Sergey Danilov1,2  

E-Print Network [OSTI]

,7­10 . The Rhines definition involves, however, the undeter- mined energy content of the flow, which depends and dissipation. Clearly, turbulent flows stabilized by the friction have their energy content, hence rms velocity the jet number and the energy peak of the -plane turbulence for strong . The intermediate cases show

Gurarie, David

195

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

196

3D-Model view characterization using equilibrium planes Adrien Theetten1  

E-Print Network [OSTI]

3D-Model view characterization using equilibrium planes Adrien Theetten1 , Tarik Filali Ansary1 to characteristic views. Abstract We propose a new method for 3D-mesh model charac- teristic view selection. It consists in using the views that come from the equilibrium states of a 3D-model: they cor- respond

Paris-Sud XI, Université de

197

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

E-Print Network [OSTI]

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...

Turner, S. C.

2000-01-01T23:59:59.000Z

198

Copper crystals on the (1120) sapphire plane: orientation relationships, triple line ridges and interface shape equilibrium  

E-Print Network [OSTI]

Copper crystals on the (1120) sapphire plane: orientation relationships, triple line ridges The orientation relationships (ORs) of copper crystals on a ð1120? sapphire substrate equilibrated at 1253 K are presented. They barely depend on the proce- dures used in sample preparation, i.e. dewetting of a copper

Rohrer, Gregory S.

199

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

Science Journals Connector (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

200

The McCormack model for gas mixtures: Plane Couette flow R. D. M. Garcia  

E-Print Network [OSTI]

The McCormack model for gas mixtures: Plane Couette flow R. D. M. Garcia HSH Scientific Computing flow for a binary gas mixture described by the McCormack kinetic model. The solution yields, defined for binary gas mixtures in terms of the McCormack model, for semi-infinite media14 Kramers

Siewert, Charles E.

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

Vortex-vacancy interactions in two-dimensional easy-plane magnets G. M. Wysin  

E-Print Network [OSTI]

Vortex-vacancy interactions in two-dimensional easy-plane magnets G. M. Wysin Department of Physics of a magnetic vacancy site on a nearby magnetic vortex are analyzed on square, hexagonal and triangular lattices. When the vortex is centered on a vacancy, the critical anisotropies where the stable vortex structure

Wysin, Gary

202

On the Theory of Diffraction by an Aperture in an Infinite Plane Screen. I  

Science Journals Connector (OSTI)

The diffraction of a scalar plane wave by an aperture in an infinite plane screen is examined theoretically. The wave function at an arbitrary point in space is expressed in terms of its values in the aperture, and constructed so as to vanish on the screen, in accordance with the assumed boundary condition. An integral equation to determine the aperture field is obtained from the continuity requirement for the normal derivative of the wave function on traversing the plane of the aperture. Utilizing the integral equation (whose solution is generally unobtainable), the amplitude of the diffracted spherical wave at large distances from the aperture is exhibited in a form which is stationary with respect to small variations (relative to the correct values) of the aperture fields arising from a pair of incident waves. This expression is independent of the scale of the aperture fields. The transmission cross section of the aperture for a plane wave is found to be simply related to the diffracted amplitude observed in the direction of incidence. The variational formulation is applied in detail for a wave incident normally on a circular aperture. By comparison with the exact results available for this problem, it appears that the use of suitable trial aperture fields in the variational formulation yields approximate, yet accurate, expressions for the diffracted amplitude and transmission cross section over a wide range of frequencies.

Harold Levine and Julian Schwinger

1948-10-15T23:59:59.000Z

203

A Compact Parallel-plane Perpendicular-current Feed for a Modified Equiangular Spiral Antenna and Related Circuits  

E-Print Network [OSTI]

-plane perpendicular- current feed. : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 34 23 Characteristic impedance of the parallel strip-line versus distance in the y-direction. : : : : : : : : : : : : : : : : : : : : : : : : : : : : 36 24 Magnitude...

Eubanks, Travis Wayne

2011-08-08T23:59:59.000Z

204

Finite-Difference Modeling of Noise Coupling between Power/Ground Planes in Multilayered Packages and Boards  

E-Print Network [OSTI]

system become increasingly more critical regarding the signal integrity and electromagnetic interference electromagnetic interference. Hence, accurate modeling of power/ground planes is critical to estimate the noise

Swaminathan, Madhavan

205

In-plane pitch control of cholesteric liquid crystals by formation of artificial domains via patterned photopolymerization  

Science Journals Connector (OSTI)

A controlled helix pitch modulation in the in-plane direction of a planarly aligned cholesteric liquid crystal cell is demonstrated by using photopolymerizable cholesteric liquid...

Yoshida, Hiroyuki; Miura, Yusuke; Tokuoka, Kazuki; Suzuki, Satoshi; Fujii, Akihiko; Ozaki, Masanori

2008-01-01T23:59:59.000Z

206

Building America Technology Solutions for New and Existing Homes: Measure Guideline: Guidance on Taped Insulating Sheathing Drainage Planes  

Broader source: Energy.gov [DOE]

This project by Building Science Corporation focuses on the field implementation of taped board insulation as the drainage plane in both new and retrofit residential applications.

207

Bright-to-dark exciton transition in symmetric coupled quantum wells induced by an in-plane magnetic field  

Science Journals Connector (OSTI)

The energy dispersion of an exciton in a coupled quantum well is modified by an external in-plane magnetic field. We find that the in-plane magnetic field can shift the ground state of the magnetoexciton from a zero in-plane center-of-mass (CM) momentum to a finite CM momentum, and render the ground state of the magnetoexciton stable against radiative recombination due to momentum conservation. At the same time, a spatial separation of the electron and hole is realized. Thus an in-plane magnetic field can be used to tailor the radiative properties of excitons in coupled quantum wells.

Kai Chang and F. M. Peeters

2001-03-28T23:59:59.000Z

208

Subcritical Finite-Amplitude Solutions for Plane Couette Flow of Viscoelastic Fluids Alexander N. Morozov and Wim van Saarloos  

E-Print Network [OSTI]

Subcritical Finite-Amplitude Solutions for Plane Couette Flow of Viscoelastic Fluids Alexander N is shown to exhibit a purely elastic subcritical instability at a very small-Reynolds number in spite. In this Letter we show that visco- elastic plane Couette flow (PCF) exhibits a subcritical instability to finite

van Saarloos, Wim

209

Wellbore stability model for shale gas reservoir considering the coupling of multi-weakness planes and porous flow  

Science Journals Connector (OSTI)

Abstract Irregular wellbore collapse phenomena and accidents frequently occur during drilling operations in Longmaxi shale gas reservoir. Considering shale formation with natural cross beddings and fractures, we propose a multi-weakness plane instead of a single weakness plane failure model. Shale samples obtained from the Lower Silurian Longmaxi Strata of Sichuan Basin are investigated based on characterization and analysis of mineralogy, pore structure, sliding failure condition, and rock mechanics to study the impact of porous flow on jointed shale masses. Results show that Longmaxi gas shale is a brittle and fracture-prone material with poor hydrating capacity and extremely low permeability in rock matrices. Reduction of rock strength under porous flow may contribute to changes in intensity parameters of the weakness planes. Therefore, considering the failure of multi-weakness planes under porous flow, we present a wellbore stability model for shale gas reservoir. Two types of weakness plane distribution patterns are examined to discuss the effect of the occurrence, numbers, and water saturation of weakness planes. The results demonstrate that the number of weakness planes, difference in weakness plane occurrence, and diverse water saturation levels significantly affect wellbore stability during drilling.

Chuan Liang; Mian Chen; Yan Jin; Yunhu Lu

2014-01-01T23:59:59.000Z

210

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

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

211

Predicting the Voltage Dependence of Interfacial Electrochemical Processes at Lithium-Intercalated Graphite Edge Planes  

E-Print Network [OSTI]

The applied potential governs lithium-intercalation and electrode passivation reactions in lithium ion batteries, but are challenging to calibrate in condensed phase DFT calculations. In this work, the "anode potential" of charge-neutral lithium-intercalated graphite (LiC(6)) with oxidized edge planes is computed as a function of Li-content n(Li)) at edge planes, using ab initio molecular dynamics (AIMD), a previously introduced Li+ transfer free energy method, and the experimental Li+/Li(s) value as reference. The voltage assignments are corroborated using explicit electron transfer from fluoroethylene carbonate radical anion markers. PF6- is shown to decompose electrochemically (i.e., not just thermally) at low potentials imposed by our voltage calibration technique. We demonstrate that excess electrons reside in localized states-in-the-gap in the organic carbonate liquid region, which is not semiconductor-like (band-state-like) as widely assumed in the literature.

Leung, Kevin

2015-01-01T23:59:59.000Z

212

Field dependence of the superconducting basal plane anisotropy of TmNi2B2C  

SciTech Connect (OSTI)

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

213

Use of eigenfunctions for solving radiation transfer in anisotropically scattering, plane?parallel media  

Science Journals Connector (OSTI)

Radiation transfer in an absorbing emitting gray anisotropicallyscattering plane?parallel medium is solved by using the naturally occurring eigenfunctions and expressions for the forward and backward radiation intensities the incident radiation and forward and backward radiation heat fluxes are presented. To illustrate the method of solution the situation involving an externally incident isotropic radiation at the boundary surfacex=0 and no energy sources in the medium is considered for the cases of four different scattering phase functions. It is shown that the convergence to the exact results is fast and that lower order approximations are accurate. In addition the present method of solution has an excellent potential for generalization to problems of plane?parallel media without azimuthal symmetry and to problems in cylindrical and spherical geometries.

S. T. Thynell; M. N. zi?ik

1986-01-01T23:59:59.000Z

214

Studies of Low-Current Back-Discharge in Point-Plane Geometry with Dielectric Layer  

SciTech Connect (OSTI)

The paper presents results of spectroscopic investigations of back-discharges generated in the point-plane electrode geometry in ambient air at atmospheric pressure, with the plane electrode covered with a dielectric layer. Fly ash from an electrostatic precipitator of a coal-fired power plant was used as the dielectric layer in these investigations. The discharges for positive and negative polarities of the needle electrode were studied by measuring optical emission spectra at two regions of the discharge: near the needle electrode and dielectric layer surface. The visual forms of the discharge were recorded and correlated with the current-voltage characteristics and optical emission spectra. The back-arc discharge was of particular interest in these studies due to its detrimental effects it causes in electrostatic precipitators.

Jaworek, Anatol; Rajch, Eryk [Institute of Physics Pomeranian Pedagogical Academy, Arciszewskiego 22b, 76-200 Slupsk (Poland); Krupa, Andrzej; Czech, Tadeusz; Lackowski, Marcin [Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952 Gdansk (Poland)

2006-01-15T23:59:59.000Z

215

Boussinesq Systems of Bona-Smith Type on Plane Domains: Theory and Numerical Analysis  

E-Print Network [OSTI]

We consider a class of Boussinesq systems of Bona-Smith type in two space dimensions approximating surface wave flows modelled by the three-dimensional Euler equations. We show that various initial-boundary-value problems for these systems, posed on a bounded plane domain are well posed locally in time. In the case of reflective boundary conditions, the systems are discretized by a modified Galerkin method which is proved to converge in $L^2$ at an optimal rate. Numerical experiments are presented with the aim of simulating two-dimensional surface waves in complex plane domains with a variety of initial and boundary conditions, and comparing numerical solutions of Bona-Smith systems with analogous solutions of the BBM-BBM system.

Dougalis, Vassilios; Saut, Jean-Claude

2009-01-01T23:59:59.000Z

216

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS  

E-Print Network [OSTI]

BOUSSINESQ SYSTEMS OF BONA-SMITH TYPE ON PLANE DOMAINS: THEORY AND NUMERICAL ANALYSIS #3; V. A of Bona-Smith systems with analogous solutions of the BBM-BBM system. 1 Introduction In this paper we will study the Boussinesq system #17; t +r #1; v +r #1; #17;v b#1;#17; t = 0; v t +r#17; + 1 2 rjvj 2 + cr#1

Recanati, Catherine

217

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

218

Nonlinear transverse cascade and two-dimensional magnetohydrodynamic subcritical turbulence in plane shear flows  

E-Print Network [OSTI]

We find and investigate via numerical simulations self-sustained two-dimensional turbulence in a magnetohydrodynamic flow with a maximally simple configuration: plane, noninflectional (with a constant shear of velocity) and threaded by a parallel uniform background magnetic field. This flow is spectrally stable, so the turbulence is subcritical by nature and hence it can be energetically supported just by transient growth mechanism due to shear flow nonnormality. This mechanism appears to be essentially anisotropic in spectral (wavenumber) plane and operates mainly for spatial Fourier harmonics with streamwise wavenumbers less than a ratio of flow shear to the Alfv\\'{e}n speed, $k_y < S/u_A$ (i.e., the Alfv\\'{e}n frequency is lower than the shear rate). We focused on the analysis of the character of nonlinear processes and underlying self-sustaining scheme of the turbulence, i.e., on the interplay between linear transient growth and nonlinear processes, in spectral plane. Our study, being concerned with a ...

Mamatsashvili, G R; Chagelishvili, G D; Horton, W

2014-01-01T23:59:59.000Z

219

MIXS on BepiColombo and its DEPFET based focal plane instrumentation  

Science Journals Connector (OSTI)

Focal plane instrumentation based on DEPFET Macropixel devices, being a combination of the DetectorAmplifier structure DEPFET with a silicon drift chamber (SDD), has been proposed for the MIXS (Mercury Imaging X-ray Spectrometer) instrument on ESA's Mercury exploration mission BepiColombo. MIXS images X-ray fluorescent radiation from the Mercury surface with a lightweight X-ray mirror system on the focal plane detector to measure the spatially resolved element abundance in Mercury's crust. The sensor needs to have an energy resolution better than 200eV FWHM at 1keV and is required to cover an energy range from 0.5 to 10keV, for a pixel size of 300 300 ? m 2 . Main challenges for the instrument are radiation damage and the difficult thermal environment in the mercury orbit. The production of the first batch of flight devices has been finished at the MPI semiconductor laboratory. Prototype modules have been assembled to verify the electrical properties of the devices; selected results are presented here. The prototype devices, Macropixel prototypes for the SIMBOL-X focal plane, are electrically fully compatible, but have a pixel size of 0.50.5mm2. Excellent homogeneity and near Fano-limited energy resolution at high readout speeds have been observed on these devices.

J. Treis; L. Andricek; F. Aschauer; K. Heinzinger; S. Herrmann; M. Hilchenbach; T. Lauf; P. Lechner; G. Lutz; P. Majewski; M. Porro; R.H. Richter; G. Schaller; M. Schnecke; F. Schopper; H. Soltau; A. Stefanescu; L. Strder; G. de Vita

2010-01-01T23:59:59.000Z

220

Pump-probe measurements of the thermal conductivity tensor for materials lacking in-plane symmetry  

SciTech Connect (OSTI)

We previously demonstrated an extension of time-domain thermoreflectance (TDTR) which utilizes offset pump and probe laser locations to measure in-plane thermal transport properties of multilayers. However, the technique was limited to systems of transversely isotropic materials studied using axisymmetric laser intensities. Here, we extend the mathematics so that data reduction can be performed on non-transversely isotropic systems. An analytic solution of the diffusion equation for an N-layer system is given, where each layer has a homogenous but otherwise arbitrary thermal conductivity tensor and the illuminating spots have arbitrary intensity profiles. As a demonstration, we use both TDTR and time-resolved magneto-optic Kerr effect measurements to obtain thermal conductivity tensor elements of <110> ?-SiO{sub 2}. We show that the out-of-phase beam offset sweep has full-width half-maxima that contains nearly independent sensitivity to the in-plane thermal conductivity corresponding to the scanning direction. Also, we demonstrate a Nb-V alloy as a low thermal conductivity TDTR transducer layer that helps improve the accuracy of in-plane measurements.

Feser, Joseph P. [Department of Mechanical Engineering, University of Delaware, Newark, Delaware 19716 (United States); Liu, Jun; Cahill, David G. [Department of Materials Science and Engineering, and Frederick-Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801 (United States)

2014-10-15T23:59:59.000Z

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221

Solution to the Boltzmann equation for layered systems for current perpendicular to the planes  

SciTech Connect (OSTI)

Present theories of giant magnetoresistance (GMR) for current perpendicular to the planes (CPP) are based on an extremely restricted solution to the Boltzmann equation that assumes a single free electron band structure for all layers and all spin channels. Within this model only the scattering rate changes from one layer to the next. This model leads to the remarkable result that the resistance of a layered material is simply the sum of the resistances of each layer. We present a solution to the Boltzmann equation for CPP for the case in which the electronic structure can be different for different layers. The problem of matching boundary conditions between layers is much more complicated than in the current in the planes (CIP) geometry because it is necessary to include the scattering-in term of the Boltzmann equation even for the case of isotropic scattering. This term couples different values of the momentum parallel to the planes. When the electronic structure is different in different layers there is an interface resistance even in the absence of intermixing of the layers. The size of this interface resistance is affected by the electronic structure, scattering rates, and thicknesses of nearby layers. For Co-Cu, the calculated interface resistance and its spin asymmetry is comparable to that measured at low temperature in sputtered samples. (c) 2000 American Institute of Physics.

Butler, W. H. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Zhang, X.-G. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); MacLaren, J. M. [Tulane University, New Orleans, Louisiana 70018 (United States)] [Tulane University, New Orleans, Louisiana 70018 (United States)

2000-05-01T23:59:59.000Z

222

On plane-wave relativistic electrodynamics in plasmas and in vacuum  

E-Print Network [OSTI]

We revisit the exact microscopic equations (in differential, and equivalent integral form) 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 very simple and explicit dependence on the transverse electromagnetic potential; 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, and can be used as initial step in an iterative resolution scheme. 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. Because of this penetration 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 [G. Fiore, R. Fedele, U. De Angelis, "The slingshot effect: a possible new laser-driven high energy acceleration mechanism for electrons", arXiv:1309.1400].

Gaetano Fiore

2014-05-02T23:59:59.000Z

223

The influence of strain rate and hydrogen on the plane-strain ductility of Zircaloy cladding  

SciTech Connect (OSTI)

The authors studied the ductility of unirradiated Zircaloy-4 cladding under loading conditions prototypical of those found in reactivity-initiated accidents (RIA), i.e.: near plane-strain deformation in the hoop direction (transverse to the cladding axis) at room temperature and 300 C and high strain rates. To conduct these studies, they developed a specimen configuration in which near plane-strain deformation is achieved in the gage section, and a testing methodology that allows one to determine both the limit strain at the onset of localized necking and the fracture strain. The experiments indicate that there is little effect of strain rate (10{sup {minus}3} to 10{sup 2} s{sup {minus}1}) on the ductility of unhydrided Zircaloy tubing deformed under near plane-strain conditions at either room temperature or 300 C. Preliminary experiments on cladding containing 190 ppm hydrogen show only a small loss of fracture strain but no clear effect on limit strain. The experiments also indicate that there is a significant loss of Zircaloy ductility when surface flaws are present in the form of thickness imperfections.

Link, T.M.; Motta, A.T.; Koss, D.A. [Pennsylvania State Univ., University Park, PA (United States)

1998-03-01T23:59:59.000Z

224

Measurements of solar flux density distribution on a plane receiver due to a flat heliostat  

SciTech Connect (OSTI)

An experimental facility is designed and manufactured to measure the solar flux density distribution on a central flat receiver due to a single flat heliostat. The tracking mechanism of the heliostat is controlled by two stepping motors, one for tilt angle control and the other for azimuth angle control. A x-y traversing mechanism is also designed and mounted on a vertical central receiver plane, where the solar flux density is to be measured. A miniature solar sensor is mounted on the platform of the traversing mechanism, where it is used to measure the solar flux density distribution on the receiver surface. The sensor is connected to a data acquisition card in a host computer. The two stepping motors of the heliostat tracking mechanism and the two stepping motors of the traversing mechanism are all connected to a controller card in the same host computer. A software `TOWER` is prepared to let the heliostat track the sun, move the platform of the traversing mechanism to the points of a preselected grid, and to measure the solar flux density distribution on the receiver plane. Measurements are carried out using rectangular flat mirrors of different dimensions at several distances from the central receiver. Two types of images were identified on the receiver plane - namely, apparent (or visible) and mirror-reflected radiation images. Comparison between measurements and a mathematical model validates the mathematical model. 13 refs., 12 figs., 1 tab.

Elsayed, M.M.; Fathalah, K.A.; Al-Rabghi, O.M. [King Abdulaziz Univ., Jeddah (Saudi Arabia)] [King Abdulaziz Univ., Jeddah (Saudi Arabia)

1995-06-01T23:59:59.000Z

225

A feasibility study of a molecular-based patient setup verification method using a parallel-plane PET system  

Science Journals Connector (OSTI)

A feasibility study of a novel PET-based molecular image guided radiation therapy (m-IGRT) system was conducted by comparing PET-based digitally reconstructed planar image (PDRI) registration with radiographic registration. We selected a pair of opposing parallel-plane PET systems for the practical implementation of this system. Planar images along the in-plane and cross-plane directions were reconstructed from the parallel-plane PET data. The in-plane and cross-plane FWHM of the profile of 2 mm diameter sources was approximately 1.8 and 8.1 mm, respectively. Therefore, only the reconstructed in-plane image from the parallel-plane PET data was used in the PDRI registration. In the image registration, five different sizes of 18F cylindrical sources (diameter: 8, 12, 16, 24, 32 mm) were used to determine setup errors. The data acquisition times were 1, 3 and 5 min. Image registration was performed by five observers to determine the setup errors from PDRI registration and radiographic registration. The majority of the mean registration errors obtained from the PDRI registration were not significantly different from those obtained from the radiographic registration. Acquisition time did not appear to result in significant differences in the mean registration error. The mean registration error for the PDRI registration was found to be 0.93 0.33 mm. This is not statistically different from the radiographic registration which had a mean registration error of 0.92 0.27 mm. Our results suggest that m-IGRT image registration using PET-based reconstructed planar images along the in-plane direction is feasible for clinical use if PDRI registration is performed at two orthogonal gantry angles.

Satoshi Yamaguchi; Masayori Ishikawa; Gerard Bengua; Kenneth Sutherland; Teiji Nishio; Satoshi Tanabe; Naoki Miyamoto; Ryusuke Suzuki; Hiroki Shirato

2011-01-01T23:59:59.000Z

226

From spatially indirect excitons to momentum-space indirect excitons by an in-plane magnetic field  

Science Journals Connector (OSTI)

An in-plane magnetic field is found to change drastically the photoluminescence spectra and kinetics of interwell excitons in GaAs/AlxGa1-xAs coupled quantum wells. This effect is due to the in-plane magnetic-field-induced displacement of the interwell exciton dispersion in momentum space, which results in the transition from the momentum-space direct exciton ground state to the momentum-space indirect exciton ground state. An in-plane magnetic field is, therefore, an effective tool for exciton dispersion engineering.

L. V. Butov, A. V. Mintsev, Yu. E. Lozovik, K. L. Campman, and A. C. Gossard

2000-07-15T23:59:59.000Z

227

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

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

228

A MID-INFRARED CENSUS OF STAR FORMATION ACTIVITY IN BOLOCAM GALACTIC PLANE SURVEY SOURCES  

SciTech Connect (OSTI)

We present the results of a search for mid-infrared signs of star formation activity in the 1.1 mm sources in the Bolocam Galactic Plane Survey (BGPS). We have correlated the BGPS catalog with available mid-IR Galactic plane catalogs based on the Spitzer Space Telescope GLIMPSE legacy survey and the Midcourse Space Experiment (MSX) Galactic plane survey. We find that 44% (3712 of 8358) of the BGPS sources contain at least one mid-IR source, including 2457 of 5067 (49%) within the area where all surveys overlap (10 deg. < l < 65 deg.). Accounting for chance alignments between the BGPS and mid-IR sources, we conservatively estimate that 20% of the BPGS sources within the area where all surveys overlap show signs of active star formation. We separate the BGPS sources into four groups based on their probability of star formation activity. Extended Green Objects and Red MSX Sources make up the highest probability group, while the lowest probability group is comprised of 'starless' BGPS sources which were not matched to any mid-IR sources. The mean 1.1 mm flux of each group increases with increasing probability of active star formation. We also find that the 'starless' BGPS sources are the most compact, while the sources with the highest probability of star formation activity are on average more extended with large skirts of emission. A subsample of 280 BGPS sources with known distances demonstrates that mass and mean H{sub 2} column density also increase with probability of star formation activity.

Dunham, Miranda K. [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Robitaille, Thomas P.; Evans, Neal J. II [Department of Astronomy, University of Texas at Austin, 1 University Station C1400, Austin, Texas 78712-0259 (United States); Schlingman, Wayne M. [Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85721 (United States); Cyganowski, Claudia J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Urquhart, James, E-mail: miranda.dunham@yale.edu [Australia Telescope National Facility, CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia)

2011-04-20T23:59:59.000Z

229

On the Theory of Diffraction by an Aperture in an Infinite Plane Screen. II.  

Science Journals Connector (OSTI)

The diffraction of a scalar plane wave by an aperture in an infinite plane screen is examined theoretically. The wave function at an arbitrary point of space is expressed in terms of the discontinuity in its normal derivative at the screen, where the boundary condition is that of vanishing wave function. An integral equation for the discontinuity in normal derivative (or the residual function which measures its deviation from the simple distribution appropriate to a completely infinite screen) is the result of applying the boundary condition to the space wave function. Utilizing the integral equation (whose solution is generally unobtainable), the diffracted spherical wave amplitude at large distances from the aperture is cast into a form which is stationary with respect to small variations (relative to the correct values) of the residual functions arising from a pair of incident waves. An homogeneous expression for the amplitude is exhibited wherein the part independent of the residual functions defines a Kirchoff approximation. The connection with another stationary form of the amplitude, involving a pair of aperture wave functions, is examined. A variational expression for the plane wave transmission cross section of the aperture is based on the amplitude observed in the direction of incidence. The variational formulation is applied for a wave incident normally on a circular aperture. By comparison with the exact results available for this problem, it appears that use of simple residual functions in the variational formulation yields approximate, yet accurate expressions for the diffracted amplitude and transmission cross section over a wide range of frequencies.

Harold Levine and Julian Schwinger

1949-05-01T23:59:59.000Z

230

Milnor-Wood inequalities for manifolds locally isometric to a product of hyperbolic planes  

E-Print Network [OSTI]

This note describes sharp Milnor--Wood inequalities for the Euler number of flat oriented vector bundles over closed Riemannian manifolds locally isometric to products of hyperbolic planes. One consequence is that such manifolds do not admit an affine structure, confirming Chern--Sullivan's conjecture in this case. The manifolds under consideration are of particular interest, since in contrary to many other locally symmetric spaces they do admit flat vector bundle of the corresponding dimension. When the manifold is irreducible and of higher rank, it is shown that flat oriented vector bundles are determined completely by the sign of the Euler number.

Bucher, Michelle

2008-01-01T23:59:59.000Z

231

On the motion of spinning test particles in plane gravitational waves  

E-Print Network [OSTI]

The Mathisson-Papapetrou-Dixon equations for a massive spinning test particle in plane gravitational waves are analysed and explicit solutions constructed in terms of solutions of certain linear ordinary differential equations. For harmonic waves this system reduces to a single equation of Mathieu-Hill type. In this case spinning particles may exhibit parametric excitation by gravitational fields. For a spinning test particle scattered by a gravitational wave pulse, the final energy-momentum of the particle may be related to the width, height, polarisation of the wave and spin orientation of the particle.

M Mohseni; Robin W Tucker; Charles Wang

2003-08-14T23:59:59.000Z

232

Strongly bonded water monomers on the ice Ih basal plane: Density-functional calculations  

Science Journals Connector (OSTI)

The adsorption of water monomers on noncrystallographic sites of the ice Ih basal plane is calculated from first principles. The results presented here do not support previous theoretical findings that state molecular adsorption energies in excess of the bulk cohesive energy. Still, due to an enhanced strength of the surface hydrogen bonds compared to the bulk, the admolecules are found to lower the ice surface energy. For the surface structures investigated here, the monomer adsorption energies are found to be rather insensitive with respect to the detailed microscopic structure of the underlying substrate. The latter, however, determines the adsorption-induced changes of the surface dipole layer.

C. Thierfelder; A. Hermann; P. Schwerdtfeger; W. G. Schmidt

2006-07-24T23:59:59.000Z

233

Anisotropic charge modulation in ladder planes of Sr14?xCaxCu24O41  

Science Journals Connector (OSTI)

The charge response of the ladders in Sr14?xCaxCu24O41 is characterized by dc resistivity, low frequency dielectric, and optical spectroscopy in all three crystallographic directions. The collective charge-density wave screened mode is observed in the direction of the rungs for x=0, 3, and 6, in addition to the mode along the legs. For x=8 and 9, the charge-density-wave response along the rungs fully vanishes, while the one along the legs persists. The transport perpendicular to the planes is always dominated by hopping.

T. Vuleti?; T. Ivek; B. Korin-Hamzi?; S. Tomi?; B. Gorshunov; P. Haas; M. Dressel; J. Akimitsu; T. Sasaki; T. Nagata

2005-01-13T23:59:59.000Z

234

Precision in-plane hand assembly of bulk microfabricated components for high-voltage MEMS arrays applications  

E-Print Network [OSTI]

This paper reports the design and experimental validation of an in-plane assembly method for centimeter-scale bulk-microfabricated components. The method uses mesoscaled deep-reactive-ion-etching (DRIE)-patterned cantilevers ...

Akinwande, Akintunde Ibitayo

235

Effect of heat transfer on the plane-channel poiseuille flow of a thermo-viscous fluid  

Science Journals Connector (OSTI)

A steady-state plane channel flow of viscous incompressible fluid with no-slip and heat transfer boundary conditions is considered. The flow is ... induced by a fixed pressure difference and the fluid viscosity d...

S. N. Aristov; V. G. Zelenina

236

Puzzle 38: Crush the Rebellion Ten rebel encampments have sprung up on the plane of Usyan. The Martian  

E-Print Network [OSTI]

. The Martian Federation plans to send flying saucers to deal with them. They are pretty ruthless-overlapping disks of equal radius. Solution: Consider the hexagonal packing of unit disks in the plane: It is well

Sadeh, Norman M.

237

Particles under radiation thrust in Schwarzschild spacetime from a flux perpendicular to the equatorial plane  

Science Journals Connector (OSTI)

......perpendicular to its plane, we study the motion of test particles interacting with a test geodesic radiation flux originating in the equatorial...direction. We assume that the interaction with the test particles is modelled by an effective term corresponding......

D. Bini; A. Geralico; R. T. Jantzen; O. Semerk

2015-01-01T23:59:59.000Z

238

Detailed HBT measurements with respect to the event plane and collision energy in Au+Au collisions at PHENIX  

E-Print Network [OSTI]

The azimuthal dependence of 3D HBT radii relative to the event plane gives us information about the source shape at freeze-out. It also provides information on the system's evolution by comparing it to the initial source shape. In recent studies, higher harmonic event planes and flow have been measured at RHIC and the LHC, which result primarily from spatial fluctuations of the initial density across the collision area. If the shape caused by initial fluctuations still exists at freeze-out, the HBT measurement relative to higher order event plane may show these features. We present recent results of azimuthal HBT measurements relative to $2^{nd}$- and $3^{rd}$-order event planes in Au+Au 200 GeV collisions with the PHENIX experiment. Recent HBT measurements at lower energies will be also shown and compared with the 200 GeV result.

Takafumi Niida for the PHENIX Collaboration

2013-04-10T23:59:59.000Z

239

A critical study of the Boussinesq adaptation of Flamant's plane stress elasticity solution, utilizing the digital computer  

E-Print Network [OSTI]

A CRI'. ICAL STUDY OF THE BOUSSINESQ ADAPTATION OF FLAMANT 'S PLANE STRESS ELASTICITY SOLUTION, UTILIZING THE DIGITAL COMPUTER A Thesis By BUR' EDWIN MORITZ, III. Submitted to the Graduate College of the Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE January 1967 Major Subject: MECHANICAL ENGINEERING A CRITICAL STUDY OF THE BOUSSINESQ ADAPTATION OF FLAMANT'S PLANE STRESS ELASTICITY SOLUTION, UTILIZING THE DIGITAL COMPUTER A Thesis...

Moritz, Burt Edwin

2012-06-07T23:59:59.000Z

240

Stroke plane deviation for a microrobotic fly Benjamin M. Finio, Student Member, IEEE, John P. Whitney and Robert J. Wood, Member, IEEE  

E-Print Network [OSTI]

Stroke plane deviation for a microrobotic fly Benjamin M. Finio, Student Member, IEEE, John P (MAVs) is restricted to a flat stroke plane in order to simplify analysis and mechanism design. An MAV stroke plane using relatively simple modifications to a proven design is presented. This allows

Wood, Robert

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,
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241

Airoport(City,Country,NumberOfRunways) Flight(FlightID,Day,DepartCity,DepartTime,ArrCity,ArrTime,PlaneType)  

E-Print Network [OSTI]

to Sidney leave, in alphabetical order. 7. The number of international flights that leave Boston on Thursday the airports without international flight and one not) 9. The French cities from which more than twenty directCity,DepartTime,ArrCity,ArrTime,PlaneType) Plane(PlaneType,NumberOfPassengers) 1. The cities with airport for which the number of runways

242

Diffraction Phenomena with CO-Axial Plane Piston Transducers A. Goldstein",D. R. Gandhi*, W. D. O'Brien, Jr.'  

E-Print Network [OSTI]

Diffraction Phenomena with CO-Axial Plane Piston Transducers A. Goldstein",D. R. Gandhi*, W. D. O, circular plane piston transducers. The transient and steady-state relations [11for the various maxima of Beissner an The unfocused circular plane piston effective radius can be determined accurately from

Illinois at Urbana-Champaign, University of

243

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

SciTech Connect (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

244

Stress-energy tensor in colliding plane wave space-times: An approximation procedure  

E-Print Network [OSTI]

In a recent work on the quantization of a massless scalar field in a particular colliding plane wave space-time, we computed the vacuum expectation value of the stress-energy tensor on the physical state which corresponds to the Minkowski vacuum before the collision of the waves. We did such a calculation in a region close to both the Killing-Cauchy horizon and the folding singularities that such a space-time contains. In the present paper, we give a suitable approximation procedure to compute this expectation value, in the conformal coupling case, throughout the causal past of the center of the collision. This will allow us to approximately study the evolution of such an expectation value from the beginning of the collision until the formation of the Killing-Cauchy horizon. We start with a null expectation value before the arrival of the waves, which then acquires nonzero values at the beginning of the collision and grows unbounded towards the Killing-Cauchy horizon. The value near the horizon is compatible with our previous result, which means that such an approximation may be applied to other colliding plane wave space-times. Even with this approximation, the initial modes propagated into the interaction region contain a function which cannot be calculated exactly and to ensure the correct regularization of the stress-energy tensor with the point-splitting technique, this function must be given up to adiabatic order four of approximation.

Miquel Dorca

1997-11-07T23:59:59.000Z

245

Environmental study of the National Aerospace Plane. Final report, 1 December 1991-30 December 1992  

SciTech Connect (OSTI)

The overall objective of the United States (US) National Aero-Space Plane (NASP) Program is to develop hypersonic technologies required for future military and Civilian aerospace plane systems to reduce payload cost to orbit and provide for flexible-responsive space operations. If successful, the NASP Program will be the stimulus for developing a whole new class of airbreathing hypersonic aircraft powered by clean-burning scramjet engines using liquid hydrogen as the primary fuel. As part of this development, the potential to cause environmental impacts from these type of vehicles must be considered and analyzed. This process has been initiated using the NASP Program's proposed X-30 flight research vehicle and flight test program as a basis for analysis. Environmental issues addressed include noise and sonic booms, stratospheric ozone depletion, public health and safety, hazardous materials/waste, air quality, biological and cultural resources, geology and soils, and water use. Although this study is not yet complete, preliminary analysis has determined that the X-30 vehicle and flight test program would have minimal environmental impact.

Brown, C.; Wierzbanowski, T.; Reda, H.; Duecker, G.T.

1992-12-01T23:59:59.000Z

246

Vibration measurement of a miniature component by high-speed image-plane digital holographic microscopy  

SciTech Connect (OSTI)

Measuring deformation of vibrating specimens whose dimensions are in the submillimeter range introduces a number of difficulties using laser interferometry. Normal interferometry is not suitable because of a phase ambiguity problem. In addition, the noise effect is much more serious in the measurement of small objects because a high-magnification lens is used. We present a method for full-field measurement of displacement, velocity, and acceleration of a vibrating miniature object based on image-plane digital holographic microscopy. A miniature cantilever beam is excited by a piezoelectric transducer stage with a sinusoidal configuration. A sequence of digital holograms is captured using a high-speed digital holographic microscope. Windowed Fourier analysis is applied in the spatial and spatiotemporal domains to extract the displacement, velocity and acceleration. The result shows that a combination of image-plane digital holographic microscopy and windowed Fourier analyses can be used to study vibration without encountering a phase ambiguity problem, and one can obtain instantaneous kinematic parameters on each point.

Fu Yu; Shi Hongjian; Miao Hong

2009-04-10T23:59:59.000Z

247

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

SciTech Connect (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

248

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

SciTech Connect (OSTI)

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

249

Applications of Lie-Hamilton systems on the plane: Cayley-Klein Riccati equations and beyond  

E-Print Network [OSTI]

A Lie-Hamilton system is a nonautonomous system of first-order ordinary differential equations describing the integral curves of a $t$-dependent vector field taking values in a finite-dimensional real Lie algebra of Hamiltonian vector fields with respect to a Poisson structure. After reviewing the classification of finite-dimensional real Lie algebras of Hamiltonian vector fields on $\\mathbb{R}^2$, we present new Lie-Hamilton systems on the plane with physical, biological and mathematical applications. New results cover Cayley-Klein Riccati equations, the hereafter called planar diffusion Riccati systems and complex Bernoulli equations, all of them with $t$-dependent real coefficients. Furthermore, we study the existence of local diffeomorphisms among new and already known Lie-Hamilton systems on the plane. In particular, we show that the Cayley-Klein Riccati equations describe as particular cases well-known coupled Riccati equations, second-order Kummer-Schwarz equations, Milne-Pinney equations, the harmonic oscillator with $t$-dependent frequency and other systems of physical and mathematical relevance.

F. J. Herranz; J. de Lucas; C. Sardon

2014-10-27T23:59:59.000Z

250

Planck intermediate results. XXIII. Galactic plane emission components derived from Planck with ancillary data  

E-Print Network [OSTI]

Planck data when combined with ancillary data provide a unique opportunity to separate the diffuse emission components of the inner Galaxy. The purpose of the paper is to elucidate the morphology of the various emission components in the strong star-formation region lying inside the solar radius and to clarify the relationship between the various components. The region of the Galactic plane covered is l=300-0-60deg where star-formation is highest and the emission is strong enough to make meaningful component separation. The latitude widths in this longitude range lie between 1deg and 2deg, which correspond to FWHM z-widths of 100-200pc at a typical distance of 6kpc. The four emission components studied here are synchrotron, free-free, anomalous microwave emission (AME), and thermal (vibrational) dust emission. These components are identified by constructing spectral energy distributions (SEDs) at positions along the Galactic plane using the wide frequency coverage of Planck (28.4-857GHz) in combination with l...

Ade, P A R; Alves, M I R; Arnaud, M; Ashdown, M; Atrio-Barandela, F; Aumont, J; Baccigalupi, C; Banday, A J; Barreiro, R B; Battaner, E; Benabed, K; Benoit-Lvy, A; Bernard, J -P; Bersanelli, M; Bielewicz, P; Bobin, J; Bonaldi, A; Bond, J R; Bouchet, F R; Boulanger, F; Burigana, C; Cardoso, J -F; Catalano, A; Chamballu, A; Chiang, H C; Christensen, P R; Clements, D L; Colombi, S; Colombo, L P L; Combet, C; Couchot, F; Crill, B P; Cuttaia, F; Danese, L; Davies, R D; Davis, R J; de Bernardis, P; de Rosa, A; de Zotti, G; Delabrouille, J; Dickinson, C; Diego, J M; Donzelli, S; Dor, O; Douspis, M; Dupac, X; Efstathiou, G; Enlin, T A; Eriksen, H K; Finelli, F; Forni, O; Frailis, M; Franceschi, E; Galeotta, S; Ganga, K; Gnova-Santos, R T; Ghosh, T; Giard, M; Giardino, G; Giraud-Hraud, Y; Gonzlez-Nuevo, J; Grski, K M; Gregorio, A; Gruppuso, A; Hansen, F K; Harrison, D L; Henrot-Versill, S; Herranz, D; Hildebrandt, S R; Hivon, E; Hobson, M; Hornstrup, A; Hovest, W; Huffenberger, K M; Jaffe, A H; Jaffe, T R; Jones, W C; Keihnen, E; Keskitalo, R; Kisner, T S; Kneissl, R; Knoche, J; Kunz, M; Kurki-Suonio, H; Lagache, G; Lhteenmki, A; Lamarre, J -M; Lasenby, A; Lawrence, C R; Leonardi, R; Liguori, M; Lilje, P B; Linden-Vrnle, M; Lpez-Caniego, M; Lubin, P M; Macas-Prez, J F; Maino, D; Mandolesi, N; Martin, P G; Martnez-Gonzlez, E; Masi, S; Massardi, M; Matarrese, S; Mazzotta, P; Meinhold, P R; Melchiorri, A; Mendes, L; Mennella, A; Migliaccio, M; Mitra, S; Miville-Deschnes, M -A; Moneti, A; Montier, L; Morgante, G; Mortlock, D; Munshi, D; Murphy, J A; Naselsky, P; Nati, F; Natoli, P; Nrgaard-Nielsen, H U; Noviello, F; Novikov, D; Novikov, I; Oxborrow, C A; Pagano, L; Pajot, F; Paladini, R; Paoletti, D; Pasian, F; Pearson, T J; Peel, M; Perdereau, O; Perrotta, F; Piacentini, F; Piat, M; Pierpaoli, E; Pietrobon, D; Plaszczynski, S; Pointecouteau, E; Polenta, G; Ponthieu, N; Popa, L; Pratt, G W; Prunet, S; Puget, J -L; Rachen, J P; Reach, W T; Rebolo, R; Reich, W; Reinecke, M; Remazeilles, M; Renault, C; Ricciardi, S; Riller, T; Ristorcelli, I; Rocha, G; Rosset, C; Roudier, G; Rubio-Martn, J A; Rusholme, B; Sandri, M; Savini, G; Scott, D; Spencer, L D; Stolyarov, V; Strong, A W; Sutton, D; Suur-Uski, A -S; Sygnet, J -F; Tauber, J A; Tavagnacco, D; Terenzi, L; Tibbs, C T; Toffolatti, L; Tomasi, M; Tristram, M; Tucci, M; Valenziano, L; Valiviita, J; Van Tent, B; Varis, J; Vielva, P; Villa, F; Wade, L A; Wandelt, B D; Watson, R; Yvon, D; Zacchei, A; Zonca, A

2014-01-01T23:59:59.000Z

251

Electronic structure of diluted magnetic semiconductor superlattices: In-plane magnetic field effect  

Science Journals Connector (OSTI)

The electronic structure of diluted magnetic semiconductor (DMS) superlattices under an in-plane magnetic field is studied within the framework of the effective-mass theory; the strain effect is also included in the calculation. The numerical results show that an increase of the in-plane magnetic field renders the DMS superlattice from the direct band-gap system to the indirect band-gap system, and spatially separates the electron and the hole by changing the type-I band alignment to a type-II band alignment. The optical transition probability changes from type I to type II and back to type I like at large magnetic field. This phenomenon arises from the interplay among the superlattice potential profile, the external magnetic field, and the sp-d exchange interaction between the carriers and the magnetic ions. The shear strain induces a strong coupling of the light- and heavy-hole states and a transition of the hole ground states from light-hole to heavy-hole-like states.

Hai-Bin Wu, Kai Chang, and Jian-Bai Xia

2002-04-22T23:59:59.000Z

252

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

SciTech Connect (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

253

A Search for High-energy Muon Neutrinos from the Galactic Plane with AMANDA-II  

E-Print Network [OSTI]

Interactions of cosmic rays with the galactic interstellar medium produce high-energy neutrinos through the decay of charged pions and kaons. We report on a search with the AMANDA-II detector for muon neutrinos from the region of the galactic plane below the horizon from the South Pole (33 degrees muon neutrino events. No excess of events was observed. For a spectrum of E^{-2.7} and Gaussian spatial distribution (sigma = 2.1 degrees) around the galactic equator, we calculate a flux limit of 4.8 x 10^{-4} GeV^{-1} cm^{-2} s^{-1} sr^{-1} in the energy range from 0.2 to 40 TeV.

J. L. Kelley; for the IceCube Collaboration

2005-09-19T23:59:59.000Z

254

Defocusing of a converging electromagnetic wave by a plane dielectric interface  

SciTech Connect (OSTI)

We study how a converging spherical wave gets distorted by a plane dielectric interface. The fields in the second medium are obtained by evaluating the m-theory diffraction integral on the interface. The loss of intensity and the form of the intensity distribution are investigated. Examples are presented for various refractive-index contrasts and depths of focus. In general the intensity gets spread out over a volume that is large compared with the case without refractive-index contrast. It was found that moving the focusing lens a distance d toward the interface does not result in an equal shift of the intensity profile. This latter point has important practical implications. 21 refs., 6 figs.

Wiersma, S.H.; Visser, T.D. [Free Univ., Amsterdam (Netherlands)

1996-02-01T23:59:59.000Z

255

Modeling of the surface static displacements and fault plane slip for the 1979 Imperial Valley earthquake  

SciTech Connect (OSTI)

Three-dimensional finite element modeling techniques are used to synthesize geodetic and seismological results for 1979 Imperial Valley earthquake. The strategy pursued consists of two principal steps. In the first step, the seismologically-derived coseismic fault slip is taken as a function of position in the fault plane and is applied directly to the three-dimensional dislocation model. In the second step, a physical model of stresses and constitutive parameters is perturbed so as to reproduce the observed fault slip. Hence, the principal features of the coseismic slip pattern are explained by a stress-driven fault model in which: (1) a spatially unresolved asperity is found equivalent to a stress drop of 18 MPa averaged over an area of 15 sq km, and (2) driving stress is essentially absent on the fault segment overlapping the 1940 earthquake rupture zone. 24 references.

Slade, M.A.; Lyzenga, G.A.; Raefsky, A.

1984-12-01T23:59:59.000Z

256

Non-minimally coupled scalar field cosmology on the phase plane  

SciTech Connect (OSTI)

In this publication we investigate dynamics of a flat FRW cosmological model with a non-minimally coupled scalar field with the coupling term {xi}R{psi}{sup 2} in the scalar field action. The quadratic potential function V({psi}) {proportional_to} {psi}{sup 2} is assumed. All the evolutional paths are visualized and classified in the phase plane, at which the parameter of non-minimal coupling {xi} plays the role of a control parameter. The fragility of global dynamics with respect to changes of the coupling constant is studied in details. We find that the future big rip singularity appearing in the phantom scalar field cosmological models can be avoided due to non-minimal coupling constant effects. We have shown the existence of a finite scale factor singular point (future or past) where the Hubble function as well as its first cosmological time derivative diverge.

Hrycyna, Orest [Department of Theoretical Physics, Faculty of Philosophy, The John Paul II Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin (Poland)] [Department of Theoretical Physics, Faculty of Philosophy, The John Paul II Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin (Poland); Szydlowski, Marek, E-mail: hrycyna@kul.lublin.pl, E-mail: uoszydlo@cyf-kr.edu.pl [Dipartimento di Fisica Nucleare e Teorica, Universita degli studi di Pavia, via A. Bassi 6, I-27100 Pavia (Italy)] [Dipartimento di Fisica Nucleare e Teorica, Universita degli studi di Pavia, via A. Bassi 6, I-27100 Pavia (Italy)

2009-04-15T23:59:59.000Z

257

The Evolution of Nuclear Multifragmentation in the Temperature-Density Plane  

E-Print Network [OSTI]

The mean transverse kinetic energies of the fragments formed in the interaction of 1 A GeV Au+C have been determined. An energy balance argument indicates the presence of a collective energy which increases in magnitude with increasing multiplicity and accounts for nearly half of the measured mean transverse kinetic energy. The radial flow velocity associated with the collective energy yields estimates for the time required to expand to the freeze-out volume. Isentropic trajectories in the temperature-density plane are shown for the expansion and indicate that the system goes through the critical region at the same multiplicities as deduced from a statistical analysis. Here, the expansion time is approximately 70 fm/c.

P. G. Warren; S. Albergo; J. M. Alexander; F. Bieser; F. P. Brady; Z. Caccia; D. A. Cebra; A. D. Chacon; J. L. Chance; Y. Choi; S. Costa; J. B. Elliott; M. L. Gilkes; J. A. Hauger; A. S. Hirsch; E. L. Hjort; A. Insolia; M. Justice; D. Keane; J. C. Kitner; R. Lacey; J. Lauret; V. Lindenstruth; M. A. Lisa; H. S. Matis; R. L. McGrath; M. McMahan; C. McParlan; W. F. J. Mueller; D. L. Olson; M. D. Partlan; N. T. Porile; R. Potenza; G. Rai; J. Rasmussen; H. G. Ritter; J. Romanski; J. L. Romero; G. V. Russo; H. Sann; R. P. Scharenberg; A. Scott; Y. Shao; B. K. Srivastava; T. J. M. Symons; M. L. Tincknell; C. Tuve; S. Wang; H. H. Wieman; T. Wienold; K. Wolf

1996-10-25T23:59:59.000Z

258

Nonlocal effects in angular dependence of in-plane magnetization of tetragonal superconductors  

SciTech Connect (OSTI)

The reversible magnetization {ital M} of Lu(Ni{sub 1{minus}x}Co{sub x}){sub 2}B{sub 2}C with x=0 and 0.06 is measured in a broad temperature domain as a function of field orientation {theta} in the basal crystal plane. The data are interpreted within London theory extended for nonlocality of the current-field relation in superconductors. The dependence M({theta}) diminishes on warming, vanishes at T{sup {asterisk}}{lt}T{sub c}, and changes sign for T{gt}T{sup {asterisk}}. The low-T sign is opposite to what is expected from the known angular dependence of the upper critical field and therefore cannot be attributed to the latter. Upon doping with Co, the effect disappears with decreasing mean-free path in agreement with theory. {copyright} {ital 1999} {ital The American Physical Society}

Kogan, V.G.; Budko, S.L.; Canfield, P.C. [Ames Laboratory--DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)] [Ames Laboratory--DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States); Miranovic, P. [Department of Physics, University of Montenegro, Podgorica (Yugoslavia)] [Department of Physics, University of Montenegro, Podgorica (Yugoslavia)

1999-11-01T23:59:59.000Z

259

Sedimentation stacking diagram of binary colloidal mixtures and bulk phases in the plane of chemical potentials  

E-Print Network [OSTI]

We give a full account of a recently proposed theory that explicitly relates the bulk phase diagram of a binary colloidal mixture to its phase stacking phenomenology under gravity [Soft Matter 9, 8636 (2013)]. As we demonstrate, the full set of possible phase stacking sequences in sedimentation-diffusion equilibrium originates from straight lines (sedimentation paths) in the chemical potential representation of the bulk phase diagram. From the analysis of various standard topologies of bulk phase diagrams, we conclude that the corresponding sedimentation stacking diagrams can be very rich, even more so when finite sample height is taken into account. We apply the theory to obtain the stacking diagram of a mixture of nonadsorbing polymers and colloids. We also present a catalog of generic phase diagrams in the plane of chemical potentials in order to facilitate the practical application of our concept, which also generalizes to multi component mixtures.

Daniel de las Heras; Matthias Schmidt

2014-11-19T23:59:59.000Z

260

Backscatter from the Data Plane --- Threats to Stability and Security in Information-Centric Networking  

E-Print Network [OSTI]

Information-centric networking approaches attract much attention in the ongoing search for a future communication paradigm of the Internet. Replacing the host-to-host connectivity by a data-oriented publish/subscribe service eases content distribution and authentication by concept, while eliminating all threats from unwanted traffic. However, current proposals to content routing heavily rely on data-driven protocol events and thereby introduce a strong coupling of the control to the data plane in the underlying routing infrastructure. In this paper, we analyze in theory and practical experiments threats to the stability and performance of the content distribution system. We discuss new attack vectors present in its current state of development, as well as possibilities and limitations to mitigate them.

Vahlenkamp, Matthias Whlisch Thomas C Schmidt Markus

2012-01-01T23:59:59.000Z

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.


261

Scattering of Spinning Test Particles by Plane Gravitational and Electromagnetic Waves  

E-Print Network [OSTI]

The Mathisson-Papapetrou-Dixon (MPD) equations for the motion of electrically neutral massive spinning particles are analysed, in the pole-dipole approximation, in an Einstein-Maxwell plane-wave background spacetime. By exploiting the high symmetry of such spacetimes these equations are reduced to a system of tractable ordinary differential equations. Classes of exact solutions are given, corresponding to particular initial conditions for the directions of the particle spin relative to the direction of the propagating background fields. For Einstein-Maxwell pulses a scattering cross section is defined that reduces in certain limits to those associated with the scattering of scalar and Dirac particles based on classical and quantum field theoretic techniques. The relative simplicity of the MPD approach and its use of macroscopic spin distributions suggests that it may have advantages in those astrophysical situations that involve strong classical gravitational and electromagnetic environments.

S Kessari; D Singh; R W Tucker; C Wang

2002-03-12T23:59:59.000Z

262

Topologically Massive Yang-Mills field on the Null-Plane: A Hamilton-Jacobi approach  

SciTech Connect (OSTI)

Non-abelian gauge theories are super-renormalizable in 2+1 dimensions and suffer from infrared divergences. These divergences can be avoided by adding a Chern-Simons term, i.e., building a Topologically Massive Theory. In this sense, we are interested in the study of the Topologically Massive Yang-Mills theory on the Null-Plane. Since this is a gauge theory, we need to analyze its constraint structure which is done with the Hamilton-Jacobi formalism. We are able to find the complete set of Hamiltonian densities, and build the Generalized Brackets of the theory. With the GB we obtain a set of involutive Hamiltonian densities, generators of the evolution of the system.

Bertin, M. C.; Pimentel, B. M.; Valcarcel, C. E. [Instituto de Fisica Teorica, UNESP-Sao Paulo State University, Caixa Postal 70532-2, 01156-970, Sao Paulo, SP (Brazil); Zambrano, G. E. R. [Departamento de Fisica, Universidad de Narino, Calle 18 Carrera 50, San Juan de Pasto, Narino (Colombia)

2010-11-12T23:59:59.000Z

263

Hydrogen storage of calcium atoms adsorbed on graphene: First-principles plane wave calculations  

Science Journals Connector (OSTI)

Based on first-principles plane wave calculations, we showed that Ca adsorbed on graphene can serve as a high-capacity hydrogen storage medium, which can be recycled by operations at room temperature. Ca is chemisorbed by donating part of its 4s charge to the empty ?? band of graphene. At the end the adsorbed Ca atom becomes positively charged and the semimetallic graphene changes into a metallic state. While each of the adsorbed Ca atoms forming the (44) pattern on the graphene can absorb up to five H2 molecules, hydrogen storage capacity can be increased to 8.4?wt?% by adsorbing Ca to both sides of graphene and by increasing the coverage to form the (22) pattern. Clustering of Ca atoms is hindered by the repulsive Coulomb interaction between charged Ca atoms.

C. Ataca; E. Aktrk; S. Ciraci

2009-01-29T23:59:59.000Z

264

Adaptation of UVSOR-Type Plane-Grating Monochromator in Saga  

SciTech Connect (OSTI)

The plane grating monochromator (PGM) is one of the most useful monochromators in the world. The design concept of the PGM originates from the characteristics of synchrotron radiation itself, namely parallel rays and small source size. Since the performance of the PGM depends on the beam emittance of the storage ring, it is expected that even the used PGM may be utilized in recent facility. Therefore, the UVSOR-type PGM that had been used for more than twenty years in UVSOR was adapted to the university's branch beamline in Saga-LS with several modifications. The performance tests were carried out with a photoelectron spectrometer, and the observed values were compared with the ray-tracing calculation. The results show that the adaptation of the UVSOR-type PGM is good enough to study new functional materials.

Sugiyama, H.; Takahashi, K.; Ogawa, K.; Azuma, J.; Kamada, M. [Synchrotron Light Application Center, Saga University, Saga 840-8502 (Japan)

2010-06-23T23:59:59.000Z

265

Effective S=12 description of the S=1 chain with strong easy-plane anisotropy  

Science Journals Connector (OSTI)

We present a study of the one-dimensional S=1 antiferromagnetic spin chain with large easy-plane anisotropy, with special emphasis on field-induced quantum phase transitions. Temperature and magnetic field dependence of magnetization, specific heat, and thermal conductivity is presented using a combination of numerical methods. In addition, the original S=1 model is mapped into the low-energy effective S=1/2XXZ Heisenberg chain, a model which is exactly solvable using the Bethe ansatz technique. The effectiveness of the mapping is explored, and we show that all considered quantities are in qualitative, and in some cases quantitative, agreement. The thermal conductivity of the considered S=1 model is found to be strongly influenced by the underlying effective description. Furthermore, we elucidate the low-lying electron spin resonance spectrum based on a semianalytical Bethe ansatz calculation of the effective S=1/2 model.

C. Psaroudaki; J. Herbrych; J. Karadamoglou; P. Prelovek; X. Zotos; N. Papanicolaou

2014-06-27T23:59:59.000Z

266

Time interval and lattice vibration in Raman effect, photoelectric effect and plane mirror reflection  

E-Print Network [OSTI]

Time interval between the incident and scattered photon in Raman effect and absorption of photon and emission of electron in photoelectric effect has not been determined till now. This is because there is no such high level instrument discovered till now to detect time interval to such a small level. But this can be calculated theoretically by applying a basic principle of physics like impulse is equal to the change in momentum. Considering the collision between electron and photon as perfect inelastic collision in photoelectric effect, elastic and inelastic collision in Raman effect and elastic collision in plane mirror reflection and the interaction between electron and photon as strong gravitational interaction we calculate the required time interval. During these phenomena there is lattice vibration which can be quantized as phonon particles.

M. Kumar; S. Sahoo

2012-07-02T23:59:59.000Z

267

THE BOLOCAM GALACTIC PLANE SURVEY. IX. DATA RELEASE 2 AND OUTER GALAXY EXTENSION  

SciTech Connect (OSTI)

We present a re-reduction and expansion of the Bolocam Galactic Plane Survey (BGPS), first presented by Aguirre et al. and Rosolowsky et al. The BGPS is a 1.1 mm survey of dust emission in the Northern galactic plane, covering longitudes 10 < l < 90 and latitudes |b| < 0.5 with a typical 1? rms sensitivity of 30-100 mJy in a ?33'' beam. Version 2 of the survey includes an additional ?20 deg{sup 2} of coverage in the third and fourth quadrants and ?2 deg{sup 2} in the first quadrant. The new data release has improved angular recovery, with complete recovery out to ?80'' and partial recovery to ?300'', and reduced negative bowls around bright sources resulting from the atmospheric subtraction process. We resolve the factor of 1.5 flux calibration offset between the v1.0 data release and other data sets and determine that there is no offset between v2.0 and other data sets. The v2.0 pointing accuracy is tested against other surveys and is demonstrated to be accurate and an improvement over v1.0. We present simulations and tests of the pipeline and its properties, including measurements of the pipeline's angular transfer function. The Bolocat cataloging tool was used to extract a new catalog, which includes 8594 sources, with 591 in the expanded regions. We have demonstrated that the Bolocat 40'' and 80'' apertures are accurate even in the presence of strong extended background emission. The number of sources is lower than in v1.0, but the amount of flux and area included in identified sources is larger.

Ginsburg, Adam; Glenn, Jason; Ellsworth-Bowers, Timothy P.; Battersby, Cara; Bally, John; Stringfellow, Guy [CASA, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Rosolowsky, Erik [Department of Physics, 4-181 CCIS, University of Alberta, Edmonton, AB T6G 2E1 (Canada); Dunham, Miranda [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520 (United States); Merello, Manuel; Evans II, Neal J. [Department of Astronomy, The University of Texas, 2515 Speedway, Stop C1400 Austin, TX 78712-1205 (United States); Shirley, Yancy [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Aguirre, James, E-mail: Adam.Ginsburg@colorado.edu [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States)

2013-10-01T23:59:59.000Z

268

The high resolution X-ray imaging detector planes for the MIRAX mission  

Science Journals Connector (OSTI)

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-masks telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm2, a large field of view (60 ? 60 FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution ( ~ 2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment (P2). Each one of 64 detector units of the P2 detector plane consists of an ASIC, developed by Caltech for the NuSTAR telescope, hybridized to a CZT crystal with 0.6 mm pixel size. The performance of each detector was evaluated using radioactive sources in the laboratory. The calibration results show that the P2 detectors have average energy resolution of ~ 2.1 keV @ 60 keV and 2.3 @ 122 keV. P2 was also successfully tested on near-space environment on a balloon flight, demonstrating the detector unit readiness for integration on a space mission telescope, as well as satisfying all MIRAX mission requirements.

B H G Rodrigues; J E Grindlay; B Allen; J Hong; S Barthelmy; J Braga; F D'Amico; R E Rothschild

2013-01-01T23:59:59.000Z

269

The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission  

E-Print Network [OSTI]

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-mask telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm^2, a large field of view (60x60 degrees FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution (~2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment (P2). Each one of 64 detector units of the P2 detector plane consists of an ASIC, developed by Caltech for the NuSTAR telescope, hybridized to a CZT crystal with 0.6 mm pixel size. The performance of each detector was evaluated using radioactive sources in the laboratory. The calibration results show that the P2 detectors have average energy resolution of ~2.1 keV @ 60 keV and ~2.3 keV @ 122 keV. P2 was also successfully tested on near-space environment on a balloon flight, demonstrating the detector unit readiness for integration on a space mission telescope, as well as satisfying all MIRAX mission requirements.

Barbara H. G. Rodrigues; Jonathan E. Grindlay; Branden Allen; Jaesub Hong; Scott Barthelmy; Joao Braga; Flavio D'Amico; Richard E. Rothschild

2013-08-14T23:59:59.000Z

270

Thermal Hall conductivity of marginal Fermi liquids subject to out-of-plane impurities in high-Tc cuprates  

Science Journals Connector (OSTI)

The effect of out-of-plane impurities on the thermal Hall conductivity ?xy of in-plane marginal-Fermi-liquid (MFL) quasiparticles in high-Tc cuprates is examined by following the work on electrical Hall conductivity ?xy by Varma and Abraham [Phys. Rev. Lett. 86, 4652 (2001)]. It is shown that the effective Lorentz force exerted by these impurities is a weak function of energies of the MFL quasiparticles, resulting in nearly the same temperature dependence of ?xy/T and ?xy, indicative of obedience of the Wiedemann-Franz law. The inconsistency of the theoretical result with the experimental one is speculated to be the consequence of the different amounts of out-of-plane impurities in the two YBaCuO samples used for the ?xy and ?xy measurements.

Mei-Rong Li

2002-04-30T23:59:59.000Z

271

Measurement of the in-plane shear modulus of medium-density fibreboard by torsional and flexural vibration tests  

Science Journals Connector (OSTI)

Abstract The in-plane shear modulus (IPSM) of medium-density fibreboard (MDF) was obtained via a torsional vibration (TV) test using the specimen with various configurations and a subsequent numerical analysis. Because the out-of-plane shear modulus (OPSM) of MDF was much lower than the IPSM, the difference between the IPSM and OPSM had to be considered in the TV test. Therefore, the OPSM value was measured from the flexural vibration (FV) tests, and it was applied for the calculation of the IPSM value. The experimental and numerical results indicated that the TV test is effective to obtain the IPSM of MDF accurately under various configurations of the specimen.

Hiroshi Yoshihara; Masahiro Yoshinobu

2015-01-01T23:59:59.000Z

272

High Efficiency m-plane LEDs on Low Defect Density Bulk GaN Substrates  

SciTech Connect (OSTI)

Solid-state lighting is a key technology for reduction of energy consumption in the US and worldwide. In principle, by replacing standard incandescent bulbs and other light sources with sources based on light-emitting diodes (LEDs), ultimate energy efficiency can be achieved. The efficiency of LEDs has improved tremendously over the past two decades, however further progress is required for solid- state lighting to reach its full potential. The ability of an LED at converting electricity to light is quantified by its internal quantum efficiency (IQE). The material of choice for visible LEDs is Gallium Nitride (GaN), which is at the basis of blue-emitting LEDs. A key factor limiting the performance of GaN LEDs is the so-called efficiency droop, whereby the IQE of the LED decreases significantly at high current density. Despite decades of research, efficiency droop remains a major issue. Since high-current operation is necessary for practical lighting applications, reducing droop is a major challenge for the scientific community and the LED industry. Our approach to solving the droop issue is the use of newly available low-defect-density bulk GaN non-polar substrates. In contrast to the standard foreign substrates (sapphire, silicon carbide, silicon) used in the industry, we have employed native bulk GaN substrates with very low defect density, thus ensuring exquisite material quality and high IQE. Whereas all commercial LEDs are grown along the c-plane crystal direction of GaN, we have used m-plane non-polar substrates; these drastically modify the physical properties of the LED and enable a reduction of droop. With this approach, we have demonstrated very high IQE performance and low droop. Our results focused on violet and blue LEDs. For these, we have demonstrated very high peak IQEs and current droops of 6% and 10% respectively (up to a high current density of 200A.cm-2). All these results were obtained under electrical operation. These high IQE and low droop values are in line with the programs milestones. They demonstrate that bulk non-polar GaN substrates represent a disruptive technology for LED performance. Application of this technology to real-world products is feasible, provided that the cost of GaN substrates is compatible with the markets requirement.

David, Aurelien

2012-10-15T23:59:59.000Z

273

Statistical analysis of palaeomagnetic inclination data  

Science Journals Connector (OSTI)

......L.A., 1964. Handbook of mathematical functions...Sometimes these restorations cannot be made...calculations we need the power series, x2 x4 4...choice of coordinate system. The product of...L.A., 1964. Handbook of mathematical functions......

Randolph J. Enkin; Geoffrey S. Watson

1996-08-01T23:59:59.000Z

274

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

275

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

276

Models of the circumstellar medium of evolving, massive runaway stars moving through the Galactic plane  

E-Print Network [OSTI]

At least 5 per cent of the massive stars are moving supersonically through the interstellar medium (ISM) and are expected to produce a stellar wind bow shock. We explore how the mass loss and space velocity of massive runaway stars affect the morphology of their bow shocks. We run two-dimensional axisymmetric hydrodynamical simulations following the evolution of the circumstellar medium of these stars in the Galactic plane from the main sequence to the red supergiant phase. We find that thermal conduction is an important process governing the shape, size and structure of the bow shocks around hot stars, and that they have an optical luminosity mainly produced by forbidden lines, e.g. [OIII]. The Ha emission of the bow shocks around hot stars originates from near their contact discontinuity. The H$\\alpha$ emission of bow shocks around cool stars originates from their forward shock, and is too faint to be observed for the bow shocks that we simulate. The emission of optically-thin radiation mainly comes from th...

Meyer, D M -A; Langer, N; Gvaramadze, V V; Mignone, A; Izzard, R G; Kaper, L

2014-01-01T23:59:59.000Z

277

Visualization of water on through?plane direction of GDL using X?ray radiography  

Science Journals Connector (OSTI)

In this investigation we visualized water distribution and behavior of water on through plane direction of GDL (Gas Diffusion Layer) which is one of components of PEMFC using X?ray radiography. In order to investigate water distribution and behavior at GDL of PEMFC the facilities was set up at the 7B2 beam line in Pohang Accelerator Laboratory. The phenomena of cathode side GDL is more important because the cathode side GDL has more water than the anode side. For this reason the cathode side GDL was targeted and test section (Figure 1) was made to make similar boundary condition with a cathode side GDL of operating PEMFC. GDL faced two single channels. One is air channel as cathode gas channel of PEMFC and the other is liquid channel as cathode catalyst layer. Water is produced in cathode catalyst layer and almost of this water transport through cathode GDL. Because of this liquid channel was adopted as catalyst layer. Images of water distribution were recorded per 4 second under various liquid pressure conditions. Water content was calculated from these images using mathematic process.

Jongrok Kim; TaeJoo Kim; Junho Je; Massoud Kaviany; Sang Young Son; MooHwan Kim

2010-01-01T23:59:59.000Z

278

Visualization of water on through-plane direction of GDL using X-ray radiography  

SciTech Connect (OSTI)

In this investigation, we visualized water distribution and behavior of water on through plane direction of GDL (Gas Diffusion Layer), which is one of components of PEMFC, using X-ray radiography. In order to investigate water distribution and behavior at GDL of PEMFC, the facilities was set up at the 7B2 beam line in Pohang Accelerator Laboratory. The phenomena of cathode side GDL is more important because the cathode side GDL has more water than the anode side. For this reason, the cathode side GDL was targeted and test section (Figure 1) was made to make similar boundary condition with a cathode side GDL of operating PEMFC. GDL faced two single channels. One is air channel as cathode gas channel of PEMFC and the other is liquid channel as cathode catalyst layer. Water is produced in cathode catalyst layer and almost of this water transport through cathode GDL. Because of this, liquid channel was adopted as catalyst layer. Images of water distribution were recorded per 4 second under various liquid pressure conditions. Water content was calculated from these images using mathematic process.

Kim, Jongrok; Je, Junho; Kim, MooHwan [Department of Mechanical Engineering, POSTECH, Pohang (Korea, Republic of); Kim, TaeJoo [The Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Kaviany, Massoud [Department of Mechanical Engineering, University of Michigan, Ann Arbor (United States); Son, Sang Young [Department of Mechanical Engineering, University of Cincinnati, Cincinnati (United States)

2010-03-01T23:59:59.000Z

279

Lattice-Boltzmann simulations of the drag force on a sphere approaching a superhydrophobic striped plane  

E-Print Network [OSTI]

By means of lattice-Boltzmann simulations the drag force on a sphere of radius R approaching a superhydrophobic striped wall has been investigated as a function of arbitrary separation h. Superhydrophobic (perfect-slip vs. no-slip) stripes are characterized by a texture period L and a fraction of the gas area $\\phi$. For very large values of h/R we recover the macroscopic formulae for a sphere moving towards a hydrophilic no-slip plane. For h/R=O(1) and smaller the drag force is smaller than predicted by classical theories for hydrophilic no-slip surfaces, but larger than expected for a sphere interacting with a uniform perfectly slipping wall. At a thinner gap, $h\\ll R$ the force reduction compared to a classical result becomes more pronounced, and is maximized by increasing $\\phi$. In the limit of very small separations our simulation data are in quantitative agreement with an asymptotic equation, which relates a correction to a force for superhydrophobic slip to texture parameters. In addition, we examine ...

Dubov, Alexander L; Asmolov, Evgeny S; Harting, Jens; Vinogradova, Olga I

2014-01-01T23:59:59.000Z

280

LOOKING THROUGH THE GALACTIC PLANE: IMAGING COLD DUST TOWARD l = 44 DEG  

SciTech Connect (OSTI)

We present imaging observations of continuum emission from interstellar dust at 850 and 1200 {mu}m of a section of the Galactic Plane covering 2 deg{sup 2} centered at l = 44 DEG. Complementary jiggle-mapping and fast-scanning techniques were used, respectively, at these two wavelengths. The mapped area includes the well-known star formation regions W49 and G45.1/45.5. Using an automated clump-finding routine, we identify 132 compact 850 {mu}m emission features within the region above a completeness level of about 200 mJy beam{sup -1}. The positions of the latter objects were used to determine fluxes from the 1200 {mu}m image. Spectral line data were subsequently obtained with the same observing beamwidth as at 850 {mu}m for almost half of the objects; these were either imaged in the {sup 13}CO (3-2) line, or basic characteristics determined using the {sup 12}CO (3-2) transition. We use these data, supplemented by existing {sup 13}CO (1-0) and H I survey data, to determine distances and hence derive masses for the dust clump ensemble, assuming a uniform dust temperature of 15 K. From these data we find that the number-mass relationship for clumps in the field is similar to that found for individual star-forming regions.

Matthews, Henry; Kirk, Helen; Johnstone, Doug [National Research Council Canada, Herzberg Institute of Astrophysics, 5071 West Saanich Rd, Victoria, BC, V9E 2E7 (Canada); Weferling, Bernd [University of Hannover, IDMP, Welfengarten 1, 30167 Hannover (Germany); Cohen, Martin [Radio Astronomy Laboratory, University of California at Berkeley, CA 94720 (United States); Jenness, Tim; Davis, Gary [Joint Astronomy Centre, Hilo, HI 96720 (United States); Evans, Aneurin [School of Physical and Geographical Sciences, Keele University (United Kingdom); Dent, William R. F. [Atacama Large Millimeter Array (Chile); Fuller, Gary [University of Manchester, School of Physics and Astronomy Manchester, M60 1QD (United Kingdom); Jackson, James M.; Rathborne, Jill [Department Astronomy, Boston University, MA 02215 (United States); Richer, John [Mullard Radio Astronomy Obs., Cavendish Laboratory Street, Cambridge CB3 0HE (United Kingdom); Simon, Robert [Physikalisches Institut, Universitaet zu Koeln (Germany)], E-mail: henry.matthews@nrc-cnrc.gc.ca

2009-11-15T23:59:59.000Z

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

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

2005-11-13T23:59:59.000Z

282

The methane-acetylene cycle Aerospace Plane - A promising candidate for earth to orbit transportation  

SciTech Connect (OSTI)

The methane-acetylene cycle Aerosapce Plane (MACASP) concept is proposed and its theoretical feasibility is shown. In this concept, methane fuel stored on-board the aircraft is run out within the wing leading edge in pipes at temperatures up to 1400 K. In the presence of catalyst, the heat provided by wing drag is used to drive the highly endothermic chemical reaction 2CH4 yields 3H2 + C2H2. The products of this reaction, hydrogen and acetylene, are then fed into a combustion chamber and burned in air. On the NASP, terminal acceleration to orbit beyond the critical Mach number of the scramjet can be enabled by rocket operation using a small on-board supply of LOx. The advantages of this concept are that the two highly energetic but difficult-to-store fuels can be used without on-board storage. It is shown that the MACASP concept offers significant promise for economical earth-to-orbit transportation. 5 refs.

Zubrin, R.M. (Martin Marietta Astronautics Group, Denver, CO (United States))

1992-01-01T23:59:59.000Z

283

The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission  

E-Print Network [OSTI]

The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Galactic X-ray transient sources. In the current configuration, MIRAX will carry a set of four coded-mask telescopes with high spatial resolution Cadmium Zinc Telluride (CZT) detector planes, each one consisting of an array of 64 closely tiled CZT pixelated detectors. Taken together, the four telescopes will have a total detection area of 959 cm^2, a large field of view (60x60 degrees FWHM), high angular resolution for this energy range (6 arcmin) and very good spectral resolution (~2 keV @ 60 keV). A stratospheric balloon-borne prototype of one of the MIRAX telescopes has been developed, tested and flown by the Harvard-Smithsonian Center for Astrophysics (CfA) as part of the ProtoEXIST program. In this paper we show results of validation and calibration tests with individual CZT detectors of the ProtoEXIST second generation experiment ...

Rodrigues, Barbara H G; Allen, Branden; Hong, Jaesub; Barthelmy, Scott; Braga, Joao; D'Amico, Flavio; Rothschild, Richard E

2013-01-01T23:59:59.000Z

284

Theory of steady-state plane tunneling-assisted impact ionization waves  

SciTech Connect (OSTI)

The effect of band-to-band and trap-assisted tunneling on the properties of steady-state plane ionization waves in p{sup +}-n-n{sup +} structures is theoretically analyzed. It is shown that such tunneling-assisted impact ionization waves do not differ in a qualitative sense from ordinary impact ionization waves propagating due to the avalanche multiplication of uniformly distributed seed electrons and holes. The quantitative differences of tunneling-assisted impact ionization waves from impact ionization waves are reduced to a slightly different relation between the wave velocity u and the maximum field strength E{sub M} at the front. It is shown that disregarding impact ionization does not exclude the possibility of the existence of tunneling-assisted ionization waves; however, their structure radically changes, and their velocity strongly decreases for the same E{sub M}. A comparison of the dependences u(E{sub M}) for various ionization-wave types makes it possible to determine the conditions under which one of them is dominant. In conclusion, unresolved problems concerning the theory of tunneling-assisted impact ionization waves are discussed and the directions of further studies are outlined.

Kyuregyan, A. S., E-mail: ask@vei.ru [Lenin All-Russian Electrical-Engineering Institute (Russian Federation)

2013-07-15T23:59:59.000Z

285

Measurements of thermal properties of insulation materials by using transient plane source technique  

Science Journals Connector (OSTI)

The paper reports on the measuring technique and values of the measured thermal properties of some commonly used insulation materials produced by local manufacturers in Saudi Arabia. Among the thermal properties of insulation materials, the thermal conductivity (k) is regarded to be the most important since it affects directly the resistance to transmission of heat (R-value) that the insulation material must offer. Other thermal properties, like the specific heat capacity (c) and density (?), are also important only under transient conditions. A well-suited and accurate method for measuring the thermal conductivity and diffusivity of materials is the transient plane source (TPS) technique, which is also called the hot disk (HD). This new technique is used in the present study to measure the thermal conductivity of some insulation materials at room temperature as well as at different elevated temperature levels expected to be reached in practice when these insulations are used in air-conditioned buildings in hot climates. Besides, thermal conductivity values of the same type of insulation material are measured for samples with different densities; generally, higher density insulations are used in building roofs than in walls. The results show that the thermal conductivity increases with increasing temperature and decreases with increasing density over the temperature and density ranges considered in the present investigation.

Saleh A. Al-Ajlan

2006-01-01T23:59:59.000Z

286

The silicon micro-strip detector plane for the LOFT/Wide Field Monitor  

E-Print Network [OSTI]

The main objective of the Wide Field Monitor (WFM) on the LOFT mission is to provide unambiguous detection of the high-energy sources in a large field of view, in order to support science operations of the LOFT primary instrument, the LAD. The monitor will also provide by itself a large number of results on the timing and spectral behaviour of hundreds of galactic compact objects, Active Galactic Nuclei and Gamma-Ray Bursts. The WFM is based on the coded aperture concept where a position sensitive detector records the shadow of a mask projected by the celestial sources. The proposed WFM detector plane, based on Double Sided micro-Strip Silicon Detectors (DSSD), will allow proper 2-dimensional recording of the projected shadows. Indeed the positioning of the photon interaction in the detector with equivalent fine resolution in both directions insures the best imaging capability compatible with the allocated budgets for this telescope on LOFT. We will describe here the overall configuration of this 2D-WFM and t...

Goldwurm, A; Gtz, D; Laurent, P; Lebrun, F; Limousin, O; Basa, S; Bertoli, W; Delagnes, E; Dolgorouky, Y; Gevin, O; Gros, A; Gouiffes, C; Jeanneau, F; Lachaud, C; Llored, M; Olivetto, C; Prvt, G; Renaud, D; Rodriguez, J; Rossin, C; Schanne, S; Soldi, S; Varniere, P

2012-01-01T23:59:59.000Z

287

Heat kernel of non-minimal gauge field kinetic operators on Moyal plane  

E-Print Network [OSTI]

We generalize the Endo formula originally developed for the computation of the heat kernel asymptotic expansion for non-minimal operators in commutative gauge theories to the noncommutative case. In this way, the first three non-zero heat trace coefficients of the non-minimal U(N) gauge field kinetic operator on the Moyal plane taken in an arbitrary background are calculated. We show that the non-planar part of the heat trace asymptotics is determined by U(1) sector of the gauge model. The non-planar or mixed heat kernel coefficients are shown to be gauge-fixing dependent in any dimension of space-time. In the case of the degenerate deformation parameter the lowest mixed coefficients in the heat expansion produce non-local gauge-fixing dependent singularities of the one-loop effective action that destroy the renormalizability of the U(N) model at one-loop level. The twisted-gauge transformation approach is discussed.

Alexei Strelchenko

2006-08-18T23:59:59.000Z

288

Snow growth and transport patterns in orographic storms as estimated from airborne vertical-plane dual-Doppler radar data  

Science Journals Connector (OSTI)

Airborne vertical-plane dual-Doppler cloud radar data, collected on wind-parallel flight legs over a mountain in Wyoming in 16 winter storms, are used to analyze the growth, transport, and sedimentation of snow. In all storms the wind is rather ...

Bart Geerts; Yang Yang; Roy Rasmussen; Samuel Haimov; Binod Pokharel

289

Magneto-electric coupling in a two-dimensional ballistic Josephson junction with in-plane magnetic texture  

E-Print Network [OSTI]

Magneto-electric coupling in a two-dimensional ballistic Josephson junction with in-plane magnetic, Germany (Dated: August 20, 2014) We study a Josephson junction made with a spin-textured bridge, when both-dimensional ballistic Josephson junction close to the critical temperature of the heterostructure, when an anomalous

Boyer, Edmond

290

Relationships between frontal-plane angular momentum and clinical balance measures during post-stroke hemiparetic walking  

E-Print Network [OSTI]

Relationships between frontal-plane angular momentum and clinical balance measures during post-stroke There is a 73% incidence of falls among individuals post-stroke, with 37% that fall sustaining injuries on the concept of the ``extrapolated center- of-mass'' [6,7], but these have not been applied to the post-stroke

291

Plastic deformation magnetic assembly of out-of-plane structures using vapour phase hydrofluoric (HF) acid release  

Science Journals Connector (OSTI)

We report on the fabrication of out-of-plane microstructures using plastic deformation magnetic assembly (PDMA) and vapour phase HF release process. A 0.5@mm thin silicon oxide (SiO"2) layer deposited on blank silicon has been implemented as a sacrificial ... Keywords: Dry release method, Hydrofluoric acid, Plastic deformation magnetic assembly

P. Argyrakis; R. Cheung

2009-11-01T23:59:59.000Z

292

Bi-plane correlation imaging for improved detection of lung nodules Ehsan Samei1,2,3  

E-Print Network [OSTI]

approach that utilizes angular information from a bi-plane digital acquisition in conjunction with computer. The correlated suspect lesions were registered as positive. Using an optimum ­3o vertical geometry and processing. INTRODUCTION Lung cancer is a leading cause of death in the US, surpassing the mortality associated with breast

293

Growth and characterization of M-plane GaN and (In,Ga)N/GaN multiple quantum wells.  

E-Print Network [OSTI]

??Thema dieser Arbeit ist die Synthese von Wurtzit M-plane (In,Ga)N(1-100)-Heterostrukturen auf g-LiAlO2(100) mittels plasmauntersttzter Molekularstrahlepitaxie (MBE). Der Einflu der Wachstumsbedingungen auf die strukturellen, morphologischen, und (more)

Sun, Yue-Jun

2004-01-01T23:59:59.000Z

294

Vacancy effects in an easy-plane Heisenberg model: reduction of Tc and doubly-charged vortices  

E-Print Network [OSTI]

Vacancy effects in an easy-plane Heisenberg model: reduction of Tc and doubly-charged vortices G. M here under the presence of a low concentration of nonmagnetic impurities (spin vacancies). A nearest, a large fraction of the thermally generated vortices nucleate centered on vacancies, where they have

Wysin, Gary

295

Polarimetric performance of a Laue lens gamma-ray CdZnTe focal plane prototype  

SciTech Connect (OSTI)

A gamma-ray telescope mission concept [gamma ray imager (GRI)] based on Laue focusing techniques has been proposed in reply to the European Space Agency call for mission ideas within the framework of the next decade planning (Cosmic Vision 2015-2025). In order to optimize the design of a focal plane for this satellite mission, a CdZnTe detector prototype has been tested at the European Synchrotron Radiation Facility under an {approx}100% polarized gamma-ray beam. The spectroscopic, imaging, and timing performances were studied and in particular its potential as a polarimeter was evaluated. Polarization has been recognized as being a very important observational parameter in high energy astrophysics (>100 keV) and therefore this capability has been specifically included as part of the GRI mission proposal. The prototype detector tested was a 5 mm thick CdZnTe array with an 11x11 active pixel matrix (pixel area of 2.5x2.5 mm{sup 2}). The detector was irradiated by a monochromatic linearly polarized beam with a spot diameter of about 0.5 mm over the energy range between 150 and 750 keV. Polarimetric Q factors of 0.35 and double event relative detection efficiency of 20% were obtained. Further measurements were performed with a copper Laue monochromator crystal placed between the beam and the detector prototype. In this configuration we have demonstrated that a polarized beam does not change its polarization level and direction after undergoing a small angle (<1 deg.) Laue diffraction inside a crystal.

Curado da Silva, R. M. [Departmento de Fisica, Universidade de Coimbra, P-3000 Coimbra (Portugal); Center for Space Radiations, Univesite Catholique de Louvain (Belgium); Caroli, E.; Stephen, J. B.; Schiavone, F.; Donati, A.; Ventura, G. [Istituto di Astrofisica Spaziale e Fisica Cosmica-Bologna, Via Gobetti 101, I-40129 Bologna (Italy); Pisa, A.; Auricchio, N.; Frontera, F. [Dipartimento di Fisica, Universita di Ferrara, Ferrara (Italy); Del Sordo, S. [Istituto di Astrofisica Spaziale e Fisica Cosmica-Palermo, Via Ugo La Malfa 153, 90146 Palermo (Italy); Honkimaeki, V. [European Synchrotron Radiation Facility, Grenoble (France); Trindade, A. M. F. [Departmento de Fisica, Universidade de Coimbra, P-3000 Coimbra (Portugal)

2008-10-15T23:59:59.000Z

296

The Fundamental Plane of field early-type galaxies at intermediate redshift  

E-Print Network [OSTI]

We present preliminary results on the evolution of the stellar populations of field early-type galaxies (E/S0) from z=0.4 to z=0. The diagnostic tool used in this study is the Fundamental Plane (FP), a tight empirical correlation between their central velocity dispersion (sigma), effective radius (Re), and effective surface brightness (SBe), which is observed to hold in the local Universe. Using HST-WFPC2 archive images and spectra obtained at the ESO-3.6m telescope we measured the FP parameters for a sample of ~30 field E/S0s at z=0.2-0.4. Remarkably, field E/S0s at intermediate redshift also define a tight FP, with scatter unchanged with respect to that of local samples. The intermediate redshift FP is offset from the local one, in the sense that, for given RE and sigma, galaxies are brighter at z=0.4 than at z=0. The implication of the offset of the FP in terms of passive evolution of the stellar population depends on its star formation history. In a single burst scenario, the stellar populations of field E/S0s were formed at z=0.8-1.6 (Omega=0.3; Omega_{Lambda}=0.7; H_0=50 km/s/Mpc). Alternatively, the bulk of stars (90% in mass) can be formed at high redshift (z~3), and the rest in a secondary burst occurred more recently (z~0.5-0.8).

T. Treu; M. Stiavelli; S. Casertano; P. Moller; G. Bertin

2000-07-18T23:59:59.000Z

297

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

SciTech Connect (OSTI)

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

298

A Hermite cubic collocation scheme for plane strain hydraulic fractures Department of Mathematics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z2  

E-Print Network [OSTI]

A Hermite cubic collocation scheme for plane strain hydraulic fractures A. Peirce Department Accepted 13 February 2010 Available online 4 March 2010 Keywords: Hydraulic fractures Integro the propagation of a hydraulic fracture in a state of plane strain. Special blended cubic Hermite-power­law basis

Peirce, Anthony

299

A Hermite cubic collocation scheme for plane strain hydraulic fractures Department of Mathematics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z2  

E-Print Network [OSTI]

A Hermite cubic collocation scheme for plane strain hydraulic fractures A. Peirce Department Accepted 13 February 2010 Available online xxxx Keywords: Hydraulic fractures Integro-partial differential of a hydraulic fracture in a state of plane strain. Special blended cubic Hermite-power­law basis functions

Peirce, Anthony

300

Out-Of-Plane Transverse Resistivity in High-T-C Superconductors as a Signature of Flow of Rigid Vortex Lines  

E-Print Network [OSTI]

plane, for the case of rigid flux lines, in addition to the usual longitudinal resistivity rho(perpendicular to), there should also exist an out-of-plane transverse resistivity rho(perpendicular to), which is of the same order of magnitude as rho...

HAO, ZD; Hu, Chia-Ren; TING, CS.

1995-01-01T23:59:59.000Z

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301

Two charges on plane in a magnetic field: II. Moving neutral quantum system across a magnetic field  

E-Print Network [OSTI]

The moving neutral system of two Coulomb charges on a plane subject to a constant magnetic field $B$ perpendicular to the plane is considered. It is shown that the composite system of finite total mass is bound for any center-of-mass momentum $P$ and magnetic field strength; the energy of the ground state is calculated accurately using a variational approach. Their accuracy is cross-checked in a Lagrange-mesh method for $B=1$ a.u. and in a perturbation theory at small $B$ and $P$. The constructed trial function has the property of being a uniform approximation of the exact eigenfunction. For a Hydrogen atom and a Positronium a double perturbation theory in $B$ and $P$ is developed and the first corrections are found algebraically. A phenomenon of a sharp change of energy behavior for a certain center-of-mass momentum and a fixed magnetic field is indicated.

M. A. Escobar-Ruiz; A. V. Turbiner

2014-07-10T23:59:59.000Z

302

Dynamics of oxygen in the YBa2Cu3O7-x basal planes by elastic-energy-loss measurements  

Science Journals Connector (OSTI)

We report elastic-energy-dissipation measurements in YBa2Cu3O7-x from 50 to 300 K at frequencies between 0.48 and 6.3 kHz. It is shown unambiguously that the two peaks around Tc are thermally activated with activation energies of 0.16 and 0.19 eV. When oxygen is reduced to about 6.5 atoms per formula unit, the higher-temperature process nearly disappears, while the other one increases. The peaks are interpreted in terms of jumps of the O atoms in the Cu-O basal planes, and two mechanisms are proposed and discussed: short jumps between the off-center positions in the chains and jumps between O(4) and O(5) positions of isolated atoms in hypothetical oxygen-depleted islands of the orthorhombic basal planes.

G. Cannelli; R. Cantelli; F. Cordero; M. Ferretti; L. Verdini

1990-11-01T23:59:59.000Z

303

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

304

Luminescence of coupled quantum wells:?Effects of indirect excitons in high in-plane magnetic fields  

Science Journals Connector (OSTI)

Luminescence measurements of a Ga1?xAlxAs?GaAs double quantum well in in-plane magnetic fields up to 22T are reported. The properties of spatially direct and indirect excitons are studied. We show that the strong indirect exciton luminescence survives in samples with low nonradiative recombination up to high in-plane magnetic fields. This contrasts with previously published results, where its strong suppression, observed for magnetic fields as low as of 10T, was explained by the exciton center-of-mass momentum conservation. We attribute the discrepancy to a relatively low nonradiative recombination in the studied sample in comparison with the radiative recombination of localized indirect excitons.

M. Orlita, R. Grill, M. Zvra, G. H. Dhler, S. Malzer, M. Byszewski, and J. Soubusta

2004-08-20T23:59:59.000Z

305

Phosphor-free nanopyramid white light-emitting diodes grown on (101{sup }1) planes using nanospherical-lens photolithography  

SciTech Connect (OSTI)

We reported a high-efficiency and low-cost nano-pattern method, the nanospherical-lens photolithography technique, to fabricate a SiO{sub 2} mask for selective area growth. By controlling the selective growth, we got a highly ordered hexagonal nanopyramid light emitting diodes with InGaN/GaN quantum wells grown on nanofacets, demonstrating an electrically driven phosphor-free white light emission. We found that both the quantum well width and indium incorporation increased linearly along the (101{sup }1) planes towards the substrate and the perpendicular direction to the (101{sup }1) planes as well. Such spatial distribution was responsible for the broadband emission. Moreover, using cathodoluminescence techniques, it was found that the blue emission originated from nanopyramid top, resembling the quantum dots, green emission from the InGaN quantum wells layer at the middle of sidewalls, and yellow emission mainly from the bottom of nanopyramid ridges, similar to the quantum wires.

Wu, Kui [State Key Laboratory of Solid-State Lighting, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 (China) [State Key Laboratory of Solid-State Lighting, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 (China); Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology/State Key Lab on Integrated Optoelectronics, Tsinghua University, Beijing 100084 (China); Wei, Tongbo, E-mail: tbwei@semi.ac.cn; Wei, Xuecheng; Zheng, Haiyang; Chen, Yu; Lu, Hongxi; Wang, Junxi; Li, Jinmin [State Key Laboratory of Solid-State Lighting, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 (China)] [State Key Laboratory of Solid-State Lighting, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 (China); Lan, Ding [National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080 (China)] [National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080 (China); Huang, Kai [Platform of Characterization and Test, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215000 (China)] [Platform of Characterization and Test, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215000 (China); Luo, Yi [Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology/State Key Lab on Integrated Optoelectronics, Tsinghua University, Beijing 100084 (China)] [Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology/State Key Lab on Integrated Optoelectronics, Tsinghua University, Beijing 100084 (China)

2013-12-09T23:59:59.000Z

306

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

307

Generalization of the k?p approach for strained layered semiconductor structures grown on high-index-planes  

Science Journals Connector (OSTI)

We present a generalized theoretical description of the 88 k?p approach for determining the band structure of layered semiconductor structures for any growth direction, including strain and piezoelectric effects. The definition of heavy, light, and splitoff hole states is extended to arbitrary growth directions in analogy to the conventional (001) case, by choosing an adapted set of basis functions. The choice of this basis allows a qualitative understanding of the in-plane band structure and of the optical properties of strained and unstrained structures. Besides, we solve the k?p Hamiltonian by means of an efficient real-space method allowing us to deal with arbitrary confining potentials. The theory is applied to unstrained, compressively strained, and tensilely strained quantum wells. We find that confinement energies, warping, and in-plane effective masses strongly depend on the direction of confinement and on strain. Piezoelectric effects further affect the dispersion for all growth directions other than (001) and (011). We also find that the optical transition strength depends on the in-plane light polarization for growth directions other than (001) and (111). 1996 The American Physical Society.

J. Los; A. Fasolino; A. Catellani

1996-02-15T23:59:59.000Z

308

Plane thermonuclear detonation waves initiated by proton beams and quasi-one-dimensional model of fast ignition  

E-Print Network [OSTI]

The one-dimensional (1D) problem on bilatiral irradiation by proton beams of the plane layer of condensed DT mixture with length $2H$ and density $\\rho_0 \\leqslant 100\\rho_s$, where $\\rho_s$ is the fuel solid-state density at atmospheric pressure and temperature of 4 K, is considered. The proton kinetic energy is 1 MeV, the beam intensity is $10^{19}$ W/cm$^2$ and duration is 50 ps. A mathematical model is based on the one-fluid two-temperature hydrodynamics with a wide-range equation of state of the fuel, electron and ion heat conduction, DT fusion reaction kinetics, self-radiation of plasma and plasma heating by alpha-particles. If the ignition occurs, a plane detonation wave, which is adjacent to the front of the rarefaction wave, appears. Upon reflection of this detonation wave from the symmetry plane, the flow with the linear velocity profile along the spatial variable $x$ and with a weak dependence of the thermodynamic functions of $x$ occurs. An appropriate solution of the equations of hydrodynamics is...

Charakhch'yan, Alexander A

2014-01-01T23:59:59.000Z

309

In-Plane Correlations in a Polymer-Supported Lipid Membrane Measured by Off-Specular Neutron Scattering  

Science Journals Connector (OSTI)

Polymer-supported single lipid bilayers are models to study configurations of cell membranes. We used off-specular neutron scattering to quantify in-plane height-height correlations of interfacial fluctuations of such a lipid bilayer. As temperature decreased from 37?C to 25?C, the polymer swells and the polymer-supported lipid membrane deviates from its initially nearly planar structure. A correlation length characteristic of capillary waves changes from 30???m at 37?C to 11???m at 25?C, while the membrane bending rigidity remains roughly constant in this temperature range.

Michael S. Jablin; Mikhail Zhernenkov; Boris P. Toperverg; Manish Dubey; Hillary L. Smith; Ajay Vidyasagar; Ryan Toomey; Alan J. Hurd; Jaroslaw Majewski

2011-03-28T23:59:59.000Z

310

Infrared hyperspectral imaging using a broadly tunable external cavity quantum cascade laser and microbolometer focal plane array  

SciTech Connect (OSTI)

A versatile mid-infrared hyperspectral imaging system is demonstrated by combining a broadly tunable external cavity quantum cascade laser and a microbolometer focal plane array. The tunable mid-infrared laser provided high brightness illumination over a tuning range from 985 cm-1 to 1075 cm-1 (9.30-10.15 ?m). Hypercubes containing images at 300 wavelengths separated by 0.3 cm 1 were obtained in 12 s. High spectral resolution chemical imaging of methanol vapor was demonstrated for both static and dynamic systems. The system was also used to image and characterize multiple component liquid and solid samples.

Phillips, Mark C.; Ho, Nicolas

2008-02-04T23:59:59.000Z

311

Improved determination of variation of rate of rotation of oscillation plane of a paraconic pendulum during the solar eclipse in Mexico on July 11, 1991  

Science Journals Connector (OSTI)

An improved value of the variation in the rate of rotation of the oscillation plane of a paraconic pendulum during the solar eclipse in Mexico on July 11, 1991 is obtained....

L. A. Savrov

2009-04-01T23:59:59.000Z

312

Hydraulic interactions between fractures and bedding planes in a carbonate aquifer studied by means of experimentally induced water-table fluctuations (Coaraze  

E-Print Network [OSTI]

1 Hydraulic interactions between fractures and bedding planes in a carbonate aquifer studied. Keywords: Karst, hydrogeochemistry, fractured rocks, hydraulic properties, France insu-00376151,version1 high and low permeability regions are controlled by the hydraulic head gradient. Past studies have

Boyer, Edmond

313

Novel Intelligent Automation Method for Out-of-Plane Fiber-Laser Alignment in the Presence of Initial Nonplanar Misalignments: Three-Point Approach  

Science Journals Connector (OSTI)

A novel and cost-effective method is developed for the roll alignment automation for out-of-plane coupling between a laser and an angled facet single-mode fiber. The method is based on...

Mondal, S K; Guo, J; Tang, Z; Zhang, R; Shi, F G

2003-01-01T23:59:59.000Z

314

Plane grating as polar heliostat in eclipse observations of the chromosphere and prominences with special application to studies of Doppler-widened Thomson-scattered Fraunhofer lines  

Science Journals Connector (OSTI)

Attention is drawn to a very simple instrumental arrangement for eclipse observations of the spectra of the chromosphere and prominences using a plane grating as polar heliostat and a short focus camera. A discus...

Yngve hman

1979-06-01T23:59:59.000Z

315

P26W-5 eCo iPs P24W-5 eCo iPs special features In Plane Switching (IPS), 0 Watt  

E-Print Network [OSTI]

Watt in power save mode, ECO button, Auto Brightness Control (ABC), DisplayViewTM IT Suite In Plane Switching (IPS), 0 Watt in power save mode, ECO button, Auto Brightness Control (ABC), Display P22W-5 eCo iPs P19-5P eCo special features In Plane Switching (IPS), 0 Watt in power save mode, ECO

Ott, Albrecht

316

Radio and near-infrared observations of the steep spectrum Galactic plane radio source WKB 0314+57.8  

E-Print Network [OSTI]

Radio and near-infared observations towards the steep spectrum Galactic plane radio source WKB 0314+57.8 are presented, in order to clarify the nature of this source. The radio observations include archival and survey data, together with new Giant Metrewave Radio Telescope observations at 617 MHz. The near-infrared observations are in the J and K bands, from the Gemini instrument on the Shane 3-m telescope. The radio observations show that WKB 0314+57.8 is extended, with an very steep spectrum (with flux density proportional to frequency to -2.5 power between 40 MHz and 1.5 GHz). The colour--magnitude diagram constructed from near-infrared observations of the field suggests the presence of a z approx 0.08 galaxy cluster behind the Galactic plane, reddened by about 6 magnitudes of visual extinction. Although the steep spectrum source has no obvious identification, two other radio sources in the field covered by the near-infrared observations have tentative identifications with galaxies. These observations indicate that WKB 0314+57.8 is a relic source in a cluster of galaxies, not a pulsar.

D. A. Green; M. Lacy; S. Bhatnagar; E. L. Gates; P. J. Warner

2004-08-06T23:59:59.000Z

317

The Photodetector Plane of the 4m Davies Cotton Small Size Telescope for the Cherenkov Telescope Array  

E-Print Network [OSTI]

Photomultipliers (PMTs) are currently adopted for the photodetector plane of Imaging Atmospheric Cherenkov Telescopes (IACTs). Even though PMT quantum efficiency has improved impressively in the recent years, one of the main limitation for their application in the gamma-astronomy field - the impossibility to operate with moon light - still remains. As a matter of fact, the light excess would lead to significant and faster camera ageing. Solid state detectors, in particular Geiger-mode avalanche photo-diodes (G-APDs) represent a valuable alternative solution to overcome this limitation as demonstrated in the field by the FACT experiment (The First G- APD Cherenkov Telescope). They can be regarded as a more promising long term approach, which can be easily adopted for the new generation of cameras and for the Cherenkov Telescope Array (CTA). We describe here the Photo-Detector Plane (PDP) of the camera for the 4 m Davies Cotton CTA Small Size Telescopes, for which large area G-APD coupled to non-imaging light c...

Boccone, V; Basili, A; Christov, A; della Volpe, M; Montaruli, T

2013-01-01T23:59:59.000Z

318

Modeling scatterers embedded in plane?layered media by a hybrid Haskell?Thompson and boundary integral equation method  

Science Journals Connector (OSTI)

A hybrid Haskell?Thompson and Boundary IntegralEquation (BIE) method is formulated which can model the acoustic and elastic response of scatterers embedded in plane?layered media. The scatterers can have an arbitrary smooth shape but must not intersect layer interfaces. The Green's function of the scatterer is computed by BIEs in the (x z w) domain and the Green's functions of the layers is computed by a Haskell?Thompson method in the (kx z w) domain. Their fields are coupled by the appropriate combination of FFTs and extrapolation operators and are finally summed up in a Born series. For notational convenience this hybrid method will be called a Generalized Born Series (GBS) method. Two advantages of the GBS method are (1) it is more efficient than finite elements or finite differences for small scatterers embedded in thickly layered media; and (2) no artificial side reflections are generated from the infinitely extended plane interfaces. The disadvantages are (1) the convergence rate of the GBS depends on the model and is unknown a priori; and (2) the computation time increases with the size of the scatterer. [Work supported by MIDAS a consortium of oil and geophysical companies.

Gerard T. Schuster; Lance Smith

1984-01-01T23:59:59.000Z

319

Modeling scatterers embedded in plane?layered media by a hybrid HaskellThomson and boundary integral equation method  

Science Journals Connector (OSTI)

A hybrid HaskellThomson and boundary integralequation (BIE) method is formulated which can model the acoustic or elastic response of scatterers embedded in plane?layered media. The scatterers can have an arbitrary smooth shape but must not intersect layer interfaces. The Greens function of the scatterer is computed by BIEs in the (x z ?) domain and the Greens function of the layers is computed by a HaskellThomson method in the (k x z ?) domain. Their fields are coupled by the appropriate combination of FFTs and extrapolation operators and are finally summed up in a Born series. For notational convenience this hybrid method will be called a generalized Born series (GBS) method. Two advantages of the GBS method are (1) it is more efficient than finite elements or finite differences for small scatterers embedded in thickly layered media and (2) no artificial side reflections are generated from the infinitely extended plane interfaces. The disadvantages are (1) the convergence rate of the GBS depends on the model and is unknown a p r i o r i and (2) the computation time increases with the size of the scatterer.

Gerard T. Schuster; Lance C. Smith

1985-01-01T23:59:59.000Z

320

Cooling rate dependence of the in-plane magnetic penetration depth in N-type BEDT-TTF superconductors  

E-Print Network [OSTI]

Abstract. We performed dc magnetization measurements under the control of cooling-rate in the organic superconductors ?-(BEDT-TTF) 2X (X=Cu(NCS) 2 and Cu[N(CN) 2]Br). A distinct different cooling-rate dependence of the in-plane magnetic penetration depth (? //(0)) was observed between two salts, where ? //(0) was estimated from a linear extrapolation to 0 K. In the Cu(NCS) 2 salt, ? //(0) remains unchanged regardless of cooling-rate, while T c decreases slightly in fastercooling. On the other hand, ? //(0) in the Cu[N(CN) 2]Br salt becomes long significantly in fastercooling. We quantitatively explain the change of ? //(0) in the cooling-rate as an impurity effect by terminal ethylene disorder in BEDT-TTF molecules in terms of the local and clean limit approximation. Key words. Organic superconductor, magnetization, penetration depth, London model. 1.

N. Yoneyama; A. Higashihara; T. Sasaki; T. Nojima; N. Kobayashi

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

WISEP J180026.60+013453.1: A NEARBY LATE-L DWARF NEAR THE GALACTIC PLANE  

SciTech Connect (OSTI)

We report a nearby L7.5 dwarf discovered using the Preliminary Data Release of the Wide-field Infrared Survey Explorer (WISE) and the Two Micron All Sky Survey. WISEP J180026.60+013453.1 has a motion of 0.42 arcsec yr{sup -1} and an estimated distance of 8.8 {+-} 1.0 pc. With this distance, it currently ranks as the sixth closest known L dwarf, although a trigonometric parallax is needed to confirm this distance. It was previously overlooked because it lies near the Galactic plane (b = 12 Degree-Sign ). As a relatively bright and nearby late L dwarf with normal near-infrared colors, W1800+0134 will serve as a benchmark for studies of cloud-related phenomena in cool substellar atmospheres.

Gizis, John E.; Castro, Philip J. [Department of Physics and Astronomy, University of Delaware, Newark, DE 19716 (United States); Burgasser, Adam J. [Center for Astrophysics and Space Science, University of California San Diego, La Jolla, CA 92093 (United States); Faherty, Jacqueline K.; Shara, Michael M. [Department of Astrophysics, American Museum of Natural History, New York, NY 10034 (United States)

2011-11-15T23:59:59.000Z

322

Free-space communication through turbulence: a comparison of plane-wave and orbital-angular-momentum encodings  

E-Print Network [OSTI]

Free-space communication allows one to use spatial mode encoding, which is susceptible to the effects of diffraction and turbulence. Here, we discuss the optimum communication modes of a system while taking such effects into account. We construct a free-space communication system that encodes information onto the plane-wave (PW) modes of light. We study the performance of this system in the presence of atmospheric turbulence, and compare it with previous results for a system employing orbital-angular-momentum (OAM) encoding. We are able to show that the PW basis is the preferred basis set for communication through atmospheric turbulence for a large Fresnel number system. This study has important implications for high-dimensional quantum key distribution systems.

Mohammad Mirhosseini; Brandon Rodenburg; Mehul Malik; Robert W. Boyd

2013-04-02T23:59:59.000Z

323

Surface structure of protonated R-plane-sapphire (1-102) studied by sum frequency vibrational spectroscopy  

SciTech Connect (OSTI)

Sum frequency vibrational spectroscopy was used to study the protonated R-plane (1{bar 1}02 ) sapphire surface. The OH stretch vibrational spectra show that the surface is terminated with three hydroxyl moieties, two from AlOH{sub 2} and one from Al{sub 2}OH functional groups. The observed polarization dependence allows determination of the orientations of the three OH species. The results suggest that the protonated sapphire (1{bar 1}02 ) surface differs from an ideal stoichimetric termination in a manner consistent with previous X-ray surface diffraction (crystal truncation rod) studies. However, in order to best explain the observed hydrogenbonding arrangement, surface oxygen spacing determined from the X-ray diffraction study requires modification.

Sung, J.; Zhang, L.; Tian, C.; Waychunas, G. A.; Shen, Y. R.

2011-04-01T23:59:59.000Z

324

Formation of Meso-Scale Roughening in 6022-T4 Al Sheets Deformed in Plane-Strain Tension  

E-Print Network [OSTI]

Meso-scale surface roughening evolution in 6022-T4 Al sheets was investigated using plane-strain tension. Formation of grain-scale hills and valleys and their relation to the morphologies and corresponding orientations of surface grains after deformation were examined experimentally. These observations were analyzed using various approaches based on the Schmid and Taylor crystal plasticity models. It was observed that surface grains with and without slip bands tend to form valleys and hills, respectively, wherever these two types of grains are adjacent to each other along the planestrain tension direction. When the sample was pulled along the transverse direction, the formation of hills and valleys by unbanded and banded grains was more lineally organized in the plane-strain (rolling) direction than in the sample which was pulled along the rolling direction. Slip banding and valley formation were principally observed in the surface grains with either very few (1?2) slip systems of high Schmid factors or low Taylor factors, in contrast to non slip-banded and hillforming surface grains. Quantitative analysis using correlation coefficients showed that the Schmid factor provided slightly better agreement than the Taylor factor in predicting slip-banding (and valley-forming) and non slip-banding (and hill-forming) behaviors of surface grains. In addition, measures that quantify the image qualities of EBSPs for selected surface grains suggested that the slip-banded and valley-forming grains contain less lattice distortion than the non slip-banded and Currently at Department of Civil and Environmental Engineering, Carnegie Mellon University, PAhill-forming grains despite the larger strains experienced by these grains. This indicates that dislocations in the slip-banded grains move out of the surface to create deformation without lattice distortion. Plastic interactions between specific neighboring grains are central to the formation of meso-scale surface roughening. 1.

unknown authors

325

Influence of growth temperature and temperature ramps on deep level defect incorporation in m-plane GaN  

SciTech Connect (OSTI)

The dependence of deep level defect incorporation in m-plane GaN films grown by metal-organic chemical vapor deposition on bulk m-plane GaN substrates as a function of growth temperature (T{sub g}) and T{sub g} ramping method was investigated using deep level optical spectroscopy. Understanding the influence of T{sub g} on GaN deep level incorporation is important for InGaN/GaN multi-quantum well (MQW) light emitting diodes (LEDs) and laser diodes (LDs) because GaN quantum barrier (QB) layers are grown much colder than thin film GaN to accommodate InGaN QW growth. Deep level spectra of low T{sub g} (800?C) GaN films grown under QB conditions were compared to deep level spectra of high T{sub g} (1150?C) GaN. Reducing T{sub g}, increased the defect density significantly (>50) through introduction of emergent deep level defects at 2.09?eV and 2.9?eV below the conduction band minimum. However, optimizing growth conditions during the temperature ramp when transitioning from high to low T{sub g} substantially reduced the density of these emergent deep levels by approximately 40%. The results suggest that it is important to consider the potential for non-radiative recombination in QBs of LED or LD active regions, and tailoring the transition from high T{sub g} GaN growth to active layer growth can mitigate such non-radiative channels.

Armstrong, A. M., E-mail: aarmstr@sandia.gov [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Kelchner, K. [Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States)] [Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States); Nakamura, S.; DenBaars, S. P. [Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States) [Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States); Materials Department, University of California, Santa Barbara, California 93106 (United States); Speck, J. S. [Materials Department, University of California, Santa Barbara, California 93106 (United States)] [Materials Department, University of California, Santa Barbara, California 93106 (United States)

2013-12-02T23:59:59.000Z

326

Load bearing capacity of API X65 pipe with dent defect under internal pressure and in-plane bending  

Science Journals Connector (OSTI)

The objective of this study was to investigate the effect of the dent magnitude on the collapse behavior of a dented pipe subjected to a combined internal pressure and in-plane bending. The plastic collapse behavior and bending moment of the dented pipe containing several dent dimensions were evaluated using elasticplastic finite element (FE) analyses. The indenters used to manufacture the dents on the API 5L X65 pipe were hemispherical rods with diameters of 40, 80, 160 and 320mm. Dent depths of 19, 38, 76, 114 and 152mm were introduced to the pipe with a diameter of 762mm and a wall thickness of 17.5mm. A closing or opening in-plane bending load was applied to the dented pipes pressurized under an internal pressure equivalent to atmospheric pressure as well as pressures of 4, 8, and 16MPa. The FE analyses results showed that the plastic collapse behavior of the dented pipes was significantly governed by the bending mode and the dent geometry. Moment-bending angle curves for the dented pipe were obtained from computer simulations and evaluated with a variety of factors in the FE analyses. The load bearing capacity of the dented pipes under the combined load was evaluated by TES (Twice Elastic Slope) moments. The load bearing capacity of the pipe containing up to a 5% dent depth of the outer diameter was not reduced in comparison to that of the plain pipe. The opening bending mode had a higher load bearing capacity than the closing bending mode under the combined load regardless of dent depth. The TES moment decreased with increasing dent depth and internal pressure regardless of the bending modes.

Jong-hyun Baek; Young-pyo Kim; Woo-sik Kim; Jae-min Koo; Chang-sung Seok

2012-01-01T23:59:59.000Z

327

Solar Phys (2009) 256: 307326 DOI 10.1007/s11207-009-9329-6  

E-Print Network [OSTI]

MINIMUM A Multispacecraft Analysis of a Small-Scale Transient Entrained by Solar Wind Streams A distribution. Minimum variance analysis of the magnetic field vectors shows that the SI is inclined at 54° to the orbital plane of the STEREO-A spacecraft. This inclination of the CIR SI is comparable to the inclination

California at Berkeley, University of

328

DOI 10.1007/s11207-009-9329-6 STEREO SCIENCE RESULTS AT SOLAR MINIMUM  

E-Print Network [OSTI]

Analysis of a Small-Scale Transient Entrained by Solar Wind Streams A.P. Rouillard · N.P. Savani · J is inclined at 54° to the orbital plane of the STEREO-A spacecraft. This inclination of the CIR SI is comparable to the inclination of the associated plasma density wave observed by HI. A small-scale magnetic

Lockwood, Mike

329

Electro-hydrodynamics and kinetic modelling of polluted air flow activated by multi-tip-to-plane corona discharge  

SciTech Connect (OSTI)

The present paper is devoted to the 2D simulation of an Atmospheric Corona Discharge Reactor (ACDR) involving 10 pins powered by a DC high voltage and positioned 7 mm above a grounded metallic plane. The corona reactor is periodically crossed by thin mono filamentary streamers with a natural repetition frequency of some tens of kHz. The simulation involves the electro-dynamic, chemical kinetic, and neutral gas hydrodynamic phenomena that influence the kinetics of the chemical species transformation. Each discharge stage (including the primary and the secondary streamers development and the resulting thermal shock) lasts about one hundred nanoseconds while the post-discharge stages occurring between two successive discharge phases last one hundred microseconds. The ACDR is crossed by a lateral air flow including 400 ppm of NO. During the considered time scale of 10 ms, one hundred discharge/post-discharge cycles are simulated. The simulation involves the radical formation and thermal exchange between the discharges and the background gas. The results show how the successive discharges activate the flow gas and how the induced turbulence phenomena affect the redistribution of the thermal energy and the chemical kinetics inside the ACDR.

Meziane, M.; Eichwald, O.; Ducasse, O.; Marchal, F. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), Toulouse Cedex 9 F-31062 (France); Sarrette, J. P.; Yousfi, M. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), Toulouse Cedex 9 F-31062 (France); CNRS, LAPLACE, Toulouse F-31062 (France)

2013-04-21T23:59:59.000Z

330

Development of a modular CdTe detector plane for gamma-ray burst detection below 100 keV  

E-Print Network [OSTI]

We report on the development of an innovative CdTe detector plane (DPIX) optimized for the detection and localization of gamma-ray bursts in the X-ray band (below 100 keV). DPIX is part of an R&D program funded by the French Space Agency (CNES). DPIX builds upon the heritage of the ISGRI instrument, currently operating with great success on the ESA INTEGRAL mission. DPIX is an assembly of 200 elementary modules (XRDPIX) equipped with 32 CdTe Schottky detectors (4x4 mm2, 1 mm thickness) produced by ACRORAD Co. LTD. in Japan. These detectors offer good energy response up to 100 keV. Each XRDPIX is readout by the very low noise front-end electronics chip IDeF-X, currently under development at CEA/DSM/DAPNIA. In this paper, we describe the design of XRDPIX, the main features of the IDeF-X chip, and will present preliminary results of the reading out of one CdTe Schottky detector by the IDeF-X V1.0 chip. A low-energy threshold around 2.7 keV has been measured. This is to be compared with the 12-15 keV threshol...

Ehanno, M; Barret, D; Lacombe, K; Pons, R; Rouaix, G; Gevin, O; Limousin, O; Lugiez, F; Bardoux, A; Penquer, A

2007-01-01T23:59:59.000Z

331

Development of a modular CdTe detector plane for gamma-ray burst detection below 100 keV  

E-Print Network [OSTI]

We report on the development of an innovative CdTe detector plane (DPIX) optimized for the detection and localization of gamma-ray bursts in the X-ray band (below 100 keV). DPIX is part of an R&D program funded by the French Space Agency (CNES). DPIX builds upon the heritage of the ISGRI instrument, currently operating with great success on the ESA INTEGRAL mission. DPIX is an assembly of 200 elementary modules (XRDPIX) equipped with 32 CdTe Schottky detectors (4x4 mm2, 1 mm thickness) produced by ACRORAD Co. LTD. in Japan. These detectors offer good energy response up to 100 keV. Each XRDPIX is readout by the very low noise front-end electronics chip IDeF-X, currently under development at CEA/DSM/DAPNIA. In this paper, we describe the design of XRDPIX, the main features of the IDeF-X chip, and will present preliminary results of the reading out of one CdTe Schottky detector by the IDeF-X V1.0 chip. A low-energy threshold around 2.7 keV has been measured. This is to be compared with the 12-15 keV threshold of the ISGRI-INTEGRAL and BAT-SWIFT instruments, which both use similar detector material.

M. Ehanno; C. Amoros; D. Barret; K. Lacombe; R. Pons; G. Rouaix; O. Gevin; O. Limousin; F. Lugiez; A. Bardoux; A. Penquer

2007-01-15T23:59:59.000Z

332

Iodine-stress corrosion cracking of Zircaloy-2 cladding under near plane strain and localized stress-strain conditions  

SciTech Connect (OSTI)

The segmented expanding mandrel test (SEMT) method is generally regarded as a good laboratory simulator of pellet-cladding interactions (PCI) in LWR fuel rods. Yet it does not reproduce the low strain failures in Zircaloy cladding typical of PCI-failed fuel elements and commonly observed in other types of laboratory specimens. This investigation addressed this apparent inconsistency. Iodine-stress corrosion cracking (I-SCC) of cold worked, unirradiated Zircaloy-2 cladding was induced in three different types of tubing specimens (known as regular, thin-wall, and chamfered) in a modified SEMT apparatus designed to test mechanical conditions that could lead to slow strain failures. Only the chamfered sample, which has been shown to be subjected to more nearly plane strain conditions than either of the other two specimen types, failed consistently at low (0.8%) total diametral strains in good agreement with in-reactor failure data. Such conditions were numerically and experimentally quantified by means of finite element calculational models and local strain measurements. The numerical analyses and strain measurements provide valuable insight into the PCI simulating power of the segmented expanding mandrel test and its experimental limitations. Failure-strain results for chamfered barrier claddings were obtained and compared with available literature data. The improved I-SCC resistance of this type of cladding was confirmed but the failure strains were significantly lower than reported for regular barrier tubes.

Nobrega, B.N.

1984-01-01T23:59:59.000Z

333

Dispersion Relations and Asymptotic Behavior of the Veneziano Partial-Wave Amplitude in the Complex s Plane  

Science Journals Connector (OSTI)

The asymptotic behavior of the Veneziano partial-wave I=1 amplitude Vl(s) for ?? scattering is studied in the complex s plane for physical l values. The ?-f0 exchange-degenerate trajectory is of the form ?(s)=as+b. For b<1 and 3b+4am?2?1, it is shown that, asymptotically, Vl(s)?o(sb-1). Under the same conditions, the resonance partial widths for fixed l have the property ?sR?o(sRb-32). The discontinuity of Vl(s) across the left-hand cut oscillates, and if b<1, then, asymptotically, disc Vl(s)?o(s-2b-4am?2). In the case -2am?2

Robert T. Park and Bipin R. Desai

1970-08-15T23:59:59.000Z

334

Design optimization of an out-of-plane gap-closing electrostatic Vibration Energy Harvester (VEH) with a limitation on the output voltage  

Science Journals Connector (OSTI)

This paper presents a simple analytical method to optimize the efficiency of an electrostatic out-of-plane gap-closing (OPGC) Vibration Energy Harvesters (VEH). For the first time the electrical and mechanical behaviours of the transducer are addressed ... Keywords: Electrostatic transduction, Energy conversion, MEMS, Microtechnology, Power generation, Vibration energy harvesting/scavenging

R. Guillemet; P. Basset; D. Galayko; T. Bourouina

2012-04-01T23:59:59.000Z

335

The algorithm of drawing the contour lines of the surfaces that resulted from the intersection of a plane with a deposit or a deposit unit  

Science Journals Connector (OSTI)

In this paper we present an algorithm of drawing the contour lines of the surfaces that resulted from the intersection of a plane with a deposit or a deposit unit. Some of the general data and the thorough data relative to the knowledge of a deposit ... Keywords: contour line, deposit, deposit unit, model, section, surface

Nicolae Dobritoiu

2009-07-01T23:59:59.000Z

336

Low-power low-noise analog circuits for on-focal-plane signal processing of infrared sensors Bedabrata Pain, Sunetra K. Mendis  

E-Print Network [OSTI]

Low-power low-noise analog circuits for on-focal-plane signal processing of infrared sensors imager performance are presented. To enable the detection of high background IR images, an in-pixel current-mode background suppression scheme is presented. The background suppression circuit consists

Fossum, Eric R.

337

Phase-field simulation of electric-field-induced in-plane magnetic domain switching in magnetic/ferroelectric layered heterostructures  

E-Print Network [OSTI]

Phase-field simulation of electric-field-induced in-plane magnetic domain switching in magnetic. Phys. Lett. 99, 182510 (2011) Quantum tunneling of the Bloch point in a magnetic film with strong uniaxial magnetic anisotropy Low Temp. Phys. 37, 690 (2011) Evolution of magnetic bubble domains

Chen, Long-Qing

338

Airoport(City,Country,NumberOfRunways) Flight(FlightID,Day,DepartCity,DepartTime,ArrCity,ArrTime,PlaneType)  

E-Print Network [OSTI]

to Sidney leave, in alphabetical order. 7. The number of international flights that leave Boston on Thursday the airports without international flight and one not) 9. The French cities from which more than twenty direct(PlaneType,NumberOfPassengers) 5. The cities from which international flight leave. SELECT DepartCity FROM (Airport AS A1 INNER

339

Dynamic Ham-Sandwich Cuts of Convex Polygons in the Plane Timothy Abbott Erik D. Demaine Martin L. Demaine Daniel Kane Stefan Langerman y  

E-Print Network [OSTI]

). In particular, if we use the vertex-count measure, the intersection of these two lines gives a point of Tukey depth n=4, which serves as an ap- proximate Tukey median. 1 Introduction Finding a ham-sandwich cut Tukey median or centerpoint; see, e.g., [5]. A Tukey median of a subset S of the plane is a point

340

Exciton diamagnetic shift in GaAs/Ga1-xAlxAs quantum wells under in-plane magnetic fields  

Science Journals Connector (OSTI)

Using a variational procedure in the effective-mass and parabolic-band approximations we investigate the effects of in-plane magnetic fields on the exciton states in single GaAs/Ga1-xAlxAs quantum wells. Exciton properties ... Keywords: 71.55.Eq, 73.20.Mf, 73.21.Fg, Diamagnetic shifts, Magnetoexcitons, Quantum wells

C. A. Duque; M. de Dios-Leyva; L. E. Oliveira

2008-03-01T23:59:59.000Z

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.


341

A jet plane is fast, and a snail is slow. But what exactly does this mean? The speed of an object  

E-Print Network [OSTI]

/hr). What is speed, and how do we measure it? How fast, Is Fast? The fastest land animal is the Cheetah, Albert Einstein showedthatnothingcanbeacceleratedtospeeds faster than the speed of light (186,000 milesThat's A jet plane is fast, and a snail is slow. But what exactly does this mean? The speed

342

Simulations of reflected sun beam traces over a target plane for an azimuthelevation tracking heliostat with fixed geometric error sources  

Science Journals Connector (OSTI)

Abstract For a heliostat with geometric errors, the reflected central solar ray from the mirror surface center forms a curved error trace on the target plane during the day rather than staying fixed on one target point. A general azimuthelevation tracking angle formula has been developed for a heliostat with a mirror-pivot offset and other typical geometric errors. This tracking angle formula is re-rewritten here as a series of easily solved expressions. This azimuthelevation tracking angle formula is then used in a new complete geometric model of the sun-beam tracking errors for an azimuthelevation tracking heliostat to simulate the sun beam tracking error trace on the target plane for a heliostat with fixed geometric errors. Here, the analysis is for a point sun and a point heliostat (or the heliostat considered as a small optical flat). The mirror surface center is defined as the orthogonal projection of the heliostat pivot on the mirror surface plane. The reflected sun-beam centre in the target plane is defined as the intersection of the mirror-surface-centre reflected central solar ray with the target plane. Due to a position tracking error in the target plane depending on the position and the orientation of the specific target plane, the position tracking error is further converted to the angular tracking error in the reflection direction to facilitate evaluation of the heliostat tracking performance. Simulations for the artificial #78 heliostat in the Beijing solar tower system on June 21st are shown to illustrate this heliostat tracking error model. This heliostat tracking error model can be used to reveal the effect of various geometrical errors in pedestal tilt etc. on the location of the beam at the target, and thus is useful in setting limits on the various geometrical errors. Essentially this paper allows one to estimate the offset of the reflected solar beam centre due to specific geometrical tracking errors, once the beam centre is computed by some other means. It also allows one to determine a limit on each error or set of errors which are allowable for a given purpose.

Minghuan Guo; Zhifeng Wang; Feihu Sun

2013-01-01T23:59:59.000Z

343

JOURNAL DE PHYSIQUE Colloque C7, supple'ment au n07, Tome 40, ~ u i l l e t1979, page C7-443 EFFECTS OF NEGATIVE AIR CORONAS ON PLANE ANODE FOILS  

E-Print Network [OSTI]

EFFECTS OF NEGATIVE AIR CORONAS ON PLANE ANODE FOILS A. Goldman and R.S. sigrnondX. Ecole SupQrieure d, negative low current point-to-plane coronas in atmosphe- ric density air with A1 or Au foil anodes gas reactions in coronas. - Preliminary studies at LPD and ELIOM showed that A1 foil anodes

Boyer, Edmond

344

Resonance absorption in CO2 laser-plane targets interaction experiments C. Garban-Labaune, E. Fabre, F. David, J. Maignan and A. Michard  

E-Print Network [OSTI]

L-463 Resonance absorption in CO2 laser-plane targets interaction experiments C. Garban-Labaune, E) Résumé. 2014 Nous avons étudié l'influence de la polarisation et de l'angle d'incidence sur l'absorption des flux de 5 x 1011- 5 1012 W/cm2. Les mesures d'absorption sont obtenues à partir de la mesure

Boyer, Edmond

345

Measurement of event-plane correlations in sqrt(s_NN)=2.76 TeV lead-lead collisions with the ATLAS detector  

E-Print Network [OSTI]

A measurement of event-plane correlations involving two or three event planes of different order is presented as a function of centrality for 7 ub-1 Pb+Pb collision data at sqrt(s_NN)=2.76 TeV, recorded by the ATLAS experiment at the LHC. Fourteen correlators are measured using a standard event-plane method and a scalar-product method, and the latter method is found to give a systematically larger correlation signal. Several different trends in the centrality dependence of these correlators are observed. These trends are not reproduced by predictions based on the Glauber model, which includes only the correlations from the collision geometry in the initial state. Calculations that include the final-state collective dynamics are able to describe qualitatively, and in some cases also quantitatively, the centrality dependence of the measured correlators. These observations suggest that both the fluctuations in the initial geometry and non-linear mixing between different harmonics in the final state are important for creating these correlations in momentum space.

ATLAS Collaboration

2014-09-10T23:59:59.000Z

346

Drop Impact and Rebound Dynamics on an Inclined Superhydrophobic Surface  

Science Journals Connector (OSTI)

The ability of the superhydrophobic surface in promoting drop rebound has significant applications in areas such as anti-icing and fouling on aircraft, power lines, and wind turbines and has prompted researchers to create an array of synthetic superhydrophobic surfaces using fabrication methods such as surface etching techniques (plasma, laser, chemical), lithography (photolithography, electron beam, X-ray), electrochemical deposition processes, spray casting, as well as electrospinning techniques. ... For example, ice accretion on a wind turbine blade as well as on an aircraft wing typically involves impact and freezing of supercooled liquid droplets on those surfaces at subzero environmental temperatures. ... By varying laser fluence, micro-texture morphol. of the wafers could be reproduced and well controlled. ...

Yong Han Yeong; James Burton; Eric Loth; Ilker S. Bayer

2014-09-12T23:59:59.000Z

347

Magnetic field inclination and atmospheric oscillations above solar active regions  

Science Journals Connector (OSTI)

......deltanu (typically 1 mHz centred at either 3, 4 or 5 mHz). The hats indicate...of the penumbra has a plasma beta [beta=p gas...z eq, at least at 3 mHz and above. Further...introduces the model atmosphere we will use throughout......

H. Schunker; P. S. Cally

2006-10-21T23:59:59.000Z

348

Body Force Model for the Aerodynamics of Inclined Perforated Surfaces  

E-Print Network [OSTI]

the mean velocity field inside and in the wake of the flaps while the numerical analysis comprised direct this finding. The resulting velocity field is in good agreement with the experiments and with the direct used in geophysical and civil engineering applications as wind shelters [8]. Common to all

Papamoschou, Dimitri

349

Magnetic field inclination and atmospheric oscillations above solar active regions  

Science Journals Connector (OSTI)

......Mm. Figure 12 The z-k z dispersion diagrams (full curves) for the three cases of...equipartition level. Figure 13 Ray path diagrams in physical x-z space for 5-mHz acoustic...and the matrix description of standard MHD ray theory of Weinberg (1962). We begin......

H. Schunker; P. S. Cally

2006-10-21T23:59:59.000Z

350

An experimental investigation of sand transport in inclined eccentric annuli  

E-Print Network [OSTI]

'fill-up' period. Okranjniso studied the effects of fluid rheology in 1981. He pointed out the importance of yield value on cuttings transport, and showed that the ratio of yield point over plastic viscosity (YP/PV) has significant effect on particle... beds are substantially reduced by small increases in mud weight. 3) Drillpipe rotation reduces annular cuttings buildup under certain conditions. 4) Under normal drilling practices, as much as half the annular area can be filled with a cuttings bed...

McClellan, John Christopher

2012-06-07T23:59:59.000Z

351

CHASING THE IDENTIFICATION OF ASCA GALACTIC OBJECTS (ChIcAGO): AN X-RAY SURVEY OF UNIDENTIFIED SOURCES IN THE GALACTIC PLANE. I. SOURCE SAMPLE AND INITIAL RESULTS  

E-Print Network [OSTI]

We present the Chasing the Identification of ASCA Galactic Objects (ChIcAGO) survey, which is designed to identify the unknown X-ray sources discovered during the ASCA Galactic Plane Survey (AGPS). Little is known about ...

Anderson, Gemma E.

352

Stochastic bifurcation and fractal and chaos control of a giant magnetostrictive film-shape memory alloy composite cantilever plate subjected to in-plane harmonic and stochastic excitation  

SciTech Connect (OSTI)

Stochastic bifurcation and fractal and chaos control of a giant magnetostrictive filmshape memory alloy (GMFSMA) composite cantilever plate subjected to in-plane harmonic and stochastic excitation were studied. Van der Pol items were improved to interpret the hysteretic phenomena of both GMF and SMA, and the nonlinear dynamic model of a GMFSMA composite cantilever plate subjected to in-plane harmonic and stochastic excitation was developed. The probability density function of the dynamic response of the system was obtained, and the conditions of stochastic Hopf bifurcation were analyzed. The conditions of noise-induced chaotic response were obtained in the stochastic Melnikov integral method, and the fractal boundary of the safe basin of the system was provided. Finally, the chaos control strategy was proposed in the stochastic dynamic programming method. Numerical simulation shows that stochastic Hopf bifurcation and chaos appear in the parameter variation process. The boundary of the safe basin of the system has fractal characteristics, and its area decreases when the noise intensifies. The system reliability was improved through stochastic optimal control, and the safe basin area of the system increased.

Zhu, Zhiwen, E-mail: zhuzhiwentju@163.com [Department of Mechanics, Tianjin University, Tianjin 300072 (China); Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin 300072 (China); Zhang, Qingxin, E-mail: zqxfirst@163.com; Xu, Jia, E-mail: xujia-ld@163.com [Department of Mechanics, Tianjin University, Tianjin 300072 (China)

2014-05-07T23:59:59.000Z

353

Direct observation of the effective bending moduli of a fluid membrane: Free-energy cost due to the reference-plane deformations  

Science Journals Connector (OSTI)

Effective bending moduli of a fluid membrane are investigated by means of the transfer-matrix method developed in our preceding paper. This method allows us to survey various statistical measures for the partition sum. The role of the statistical measures is arousing much attention, since Pinnow and Helfrich claimed that under a suitable statistical measure, that is, the local mean curvature, the fluid membranes are stiffened, rather than softened, by thermal undulations. In this paper, we propose an efficient method to observe the effective bending moduli directly: We subjected a fluid membrane to a curved reference plane, and from the free-energy cost due to the reference-plane deformations, we read off the effective bending moduli. Accepting the mean-curvature measure, we found that the effective bending rigidity gains even in the case of very flexible membrane (small bare rigidity); it has been rather controversial that for such a nonperturbative regime, the analytical prediction does apply. We also incorporate the Gaussian-curvature modulus and calculated its effective rigidity. Thereby, we found that the effective Gaussian-curvature modulus stays almost scale invariant. All these features are contrasted with the results under the normal-displacement measure.

Yoshihiro Nishiyama

2003-09-03T23:59:59.000Z

354

Direct observation of the effective bending moduli of a fluid membrane: Free-energy cost due to the reference-plane deformations  

E-Print Network [OSTI]

Effective bending moduli of a fluid membrane are investigated by means of the transfer-matrix method developed in our preceding paper. This method allows us to survey various statistical measures for the partition sum. The role of the statistical measures is arousing much attention, since Pinnow and Helfrich claimed that under a suitable statistical measure, that is, the local mean curvature, the fluid membranes are stiffened, rather than softened, by thermal undulations. In this paper, we propose an efficient method to observe the effective bending moduli directly: We subjected a fluid membrane to a curved reference plane, and from the free-energy cost due to the reference-plane deformations, we read off the effective bending moduli. Accepting the mean-curvature measure, we found that the effective bending rigidity gains even in the case of very flexible membrane (small bare rigidity); it has been rather controversial that for such non-perturbative regime, the analytical prediction does apply. We also incorporate the Gaussian-curvature modulus, and calculated its effective rigidity. Thereby, we found that the effective Gaussian-curvature modulus stays almost scale-invariant. All these features are contrasted with the results under the normal-displacement measure.

Yoshihiro Nishiyama

2003-07-10T23:59:59.000Z

355

Dark State Illuminated: Infrared Spectrum and Inverted Torsional Structure of the ?11 Out-of-Plane CH3-Rocking Mode of Methanol  

Science Journals Connector (OSTI)

The ?11 out-of-plane CH3-rocking band of methanol, one of the last fundamentals remaining en route to full vibrational description of this prototype internal rotor, has been identified in the Fourier transform spectrum of CH3OH in the 1150 cm-1 region. The ?11 torsional energy pattern is found to be inverted, the first such discovery for a bending state and an important pointer to potential generality of this phenomenon for the whole class of threefold internal rotor molecules. Level-crossing resonances giving transfer channels for intramolecular vibrational energy redistribution (IVR) have been found, and new insights are reported for far-infrared laser emission involving ?11 levels.

R. M. Lees and Li-Hong Xu

2000-04-24T23:59:59.000Z

356

A one-dimensional Lattice Boltzmann method for modeling the dynamic pole-to-pole oscillations of Min proteins for determining the position of the midcell division plane  

E-Print Network [OSTI]

Determining the middle of the bacteria cell and the proper placement of the septum is essential to the division of the bacterial cell. In E. coli, this process depends on the proteins MinC, MinD, and MinE. Here, the Lattice Boltzmann method (LBM) is used to study the dynamics of the oscillations of the min proteins from pole to pole. This determines the midcell division plane at the cellular level. The LBM is applied to the set of the deterministic reaction diffusion equations proposed by Howard et. al. [1] to describe the dynamics of the Min proteins. The LBM results are in good agreement with those of Howard et al, and agree qualitatively with the experimental results. Our good results indicate that the LBM can be an alternative computational tool for simulating problems dealing with complex biological system which are described by the reaction-diffusion equations.

Waipot Ngamsaad; Wannapong Triampo; Paisan Kanthang; I-Ming Tang; Narin Nuttawut; Charin Modjung

2004-12-09T23:59:59.000Z

357

Steps on CdSe (1120) and (1010) cleavage surfaces: Evidence for crack propagation in competing cleavage planes  

Science Journals Connector (OSTI)

We determined the structure and electronic properties of cleavage steps on CdSe (1120) and (1010) surfaces from atomically resolved scanning tunneling microscopy images. Steps occur in high concentrations and are always oriented parallel to the [0001] direction on both cleavage surfaces. The steps are electrically uncharged. Kinks are extremely rare and electrically charged. The edges of steps on (1120) surfaces consist of {1010} facets and steps on (1010) surfaces exhibit {1120} facets. Steps occur preferentially in pairs (one up and one down) on both surfaces. The step structure is explained by a crack propagation in neighboring cleavage planes favored by the creation of uncharged steps.

B. Siemens, C. Domke, Ph. Ebert, and K. Urban

1999-01-15T23:59:59.000Z

358

Anomalous In-Plane Electronic Scattering in Charge Ordered Na0.41CoO20.6H2O  

Science Journals Connector (OSTI)

We report electronic transport measurements on high quality floating zone grown NaxCoO2 and Na0.41CoO20.6H2O single crystals. We find an in-plane electronic scattering minimum near 11K and a clear charge ordering at approximately 50K. The electronic and magnetic properties in hydrated and nonhydrated Na0.41CoO2 samples are similar at higher temperature, but evolve in markedly different ways below ?50??K, where a strong ferromagnetic tendency is observed in the hydrated sample. Model calculations show the relationship of this tendency to the structure of the Fermi surface. The results, particularly the clear differences between the hydrated and nonhydrated material show a substantially enhanced ferromagnetic tendency upon hydration. Implications for superconductivity are discussed.

Guixin Cao; Maxim M. Korshunov; Yuze Gao; Mathieu Le Tacon; David J. Singh; Chengtian Lin

2012-06-06T23:59:59.000Z

359

Room temperature in-plane ?100? magnetic easy axis for Fe{sub 3}O{sub 4}/SrTiO{sub 3}(001):Nb grown by infrared pulsed laser deposition  

SciTech Connect (OSTI)

We examine the magnetic easy-axis directions of stoichiometric magnetite films grown on SrTiO{sub 3}:Nb by infrared pulsed-laser deposition. Spin-polarized low-energy electron microscopy reveals that the individual magnetic domains are magnetized along the in-plane ?100? film directions. Magneto-optical Kerr effect measurements show that the maxima of the remanence and coercivity are also along in-plane ?100? film directions. This easy-axis orientation differs from bulk magnetite and films prepared by other techniques, establishing that the magnetic anisotropy can be tuned by film growth.

Monti, Matteo; Sanz, Mikel; Oujja, Mohamed; Rebollar, Esther; Castillejo, Marta; Marco, Jos F.; Figuera, Juan de la, E-mail: juan.delafiguera@iqfr.csic.es [Instituto de Qumica Fsica Rocasolano, CSIC, Madrid E-28006 (Spain); Pedrosa, Francisco J.; Bollero, Alberto [IMDEA Nanociencia, Instituto Madrileo de Estudios Avanzados en Nanociencia, Madrid E-28049 (Spain); Camarero, Julio; Cuado, Jose Luis F. [IMDEA Nanociencia, Instituto Madrileo de Estudios Avanzados en Nanociencia, Madrid E-28049 (Spain); Dpto. de Fsica de la Materia Condensada, Universidad Autnoma de Madrid, Madrid E-28049 (Spain); Nemes, Norbert M. [Dpto. de Fsica Aplicada III, Universidad Complutense de Madrid, Madrid E-28040 (Spain); Mompean, Federico J.; Garcia-Hernndez, Mar [Instituto de Ciencia de Materiales de Madrid, CSIC, Madrid E-28049 (Spain); Nie, Shu; McCarty, Kevin F. [Sandia National Laboratories, Livermore, California 94550 (United States); N'Diaye, Alpha T.; Chen, Gong; Schmid, Andreas K. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2013-12-14T23:59:59.000Z

360

Small-scale faulting in the Upper Cretaceous of the Groningen block (The Netherlands): 3D seismic interpretation, fault plane analysis and regional paleostress  

Science Journals Connector (OSTI)

Over the last years, field-based studies have shown that fault surfaces can exhibit a considerable self-affine topography. It is reasonable to assume that similar undulations are also present in fault interpretations from 3D reflection seismic data, however both the interpretation uncertainty and geophysical resolution limits hinder their analysis. This study analyses a set of small-scale, non-reactivated faults in the Upper Cretaceous Chalk Group (Upper Ommelanden Formation) of the NW-part of the Groningen Block, the Netherlands, in a high quality Pre Stack Depth Migrated 3D seismic data set. The studied faults are fully contained inside the Chalk Group, in an area located between the major tectonic-bounding faults of the NW Groningen Block. Over 200 faults, with offsets in the order of 3050m, were interpreted across an area of ca. 150km2, showing a clear preferential orientation for strike, dip and dip-direction. Detailed interpretations and 3D fault plane analyses show undulations on the fault plane. We show that these undulations are not an interpretation or gridding artefact, and interpret these to indicate direction of fault slip. These results were used to calculate a paleostress tensor, using all faults to calculate a single stress tensor for the entire study area by Numerical Dynamic Analysis. Based on the orientation, position and a thickness analysis, it is interpreted that these faults formed due to the tectonic reactivation of salt structures in the Latest Cretaceous. The calculated paleostress state shows a general NWSE-extension, with a vertical maximum principle stress, and a stress ratio of about 0.3, indicating that the studied faults are not the result of dewatering. This interpretation agrees both with a nearby salt-tectonic reconstruction, as well as field-based paleostress results from the UK, Belgium and France. A first look at other surveys from the Dutch sector indicates that similar faults are present in other areas, with different orientations. We propose that a dedicated analysis of these faults across on- and offshore Europe would allow extending the stress map of the Late Cretaceous into areas where the Chalk is not outcropping.

Heijn van Gent; Stefan Back; Janos L. Urai; Peter Kukla

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).
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361

Canting in polarization plane Backscattering  

E-Print Network [OSTI]

" % & ' ( ) * ! A = cos2 " + sin2 # sin2 "! = Afa + Bfb ( fa " fb ) BC ( fa " fb ) BC Cfb + Dfa # $ % & ' ( ! B = cos2 " + sin2 # sin2 " ! = Afa + Bfb ( fa " fb ) BC ( fa " fb ) BC Cfb + Dfa # $ % & ' ( ! B = cos2 " sin2

Zhang, Guifu

362

Chiral skyrmions in the plane  

Science Journals Connector (OSTI)

...Information Technology Magnets without...alignment with the applied field . Owing...minimization procedure can be ruled...facilitates the handling. More precisely...a standard procedure. From (4...magnetic storage technologies?. J. Phys...

2014-01-01T23:59:59.000Z

363

Simultaneous solution algorithms for Eulerian-Eulerian gas-solid flow models: Stability analysis and convergence behaviour of a point and a plane solver  

SciTech Connect (OSTI)

Simultaneous solution algorithms for Eulerian-Eulerian gas-solid flow models are presented and their stability analyzed. The integration algorithms are based on dual-time stepping with fourth-order Runge-Kutta in pseudo-time. The domain is solved point or plane wise. The discretization of the inviscid terms is based on a low-Mach limit of the multi-phase preconditioned advection upstream splitting method (MP-AUSMP). The numerical stability of the simultaneous solution algorithms is analyzed in 2D with the Fourier method. Stability results are compared with the convergence behaviour of 3D riser simulations. The impact of the grid aspect ratio, preconditioning, artificial dissipation, and the treatment of the source terms is investigated. A particular advantage of the simultaneous solution algorithms is that they allow a fully implicit treatment of the source terms which are of crucial importance for the Eulerian-Eulerian gas-solid flow models and their solution. The numerical stability of the optimal simultaneous solution algorithm is analyzed for different solids volume fractions and gas-solid slip velocities. Furthermore, the effect of the grid resolution on the convergence behaviour and the simulation results is investigated. Finally, simulations of the bottom zone of a pilot-scale riser with a side solids inlet are experimentally validated.

Wilde, Juray de [Laboratorium voor Petrochemische Techniek, Ghent University, Krijgslaan 281, Blok S5, B-9000 Ghent (Belgium) and Fluid Mechanics Laboratory, Department of Fluid, Heat and Combustion Mechanics, Ghent University, St.-Pietersnieuwstraat 41, B-9000 Ghent (Belgium)]. E-mail: Guray.Marin@UGent.be; Vierendeels, Jan [Fluid Mechanics Laboratory, Department of Fluid, Heat and Combustion Mechanics, Ghent University, St.-Pietersnieuwstraat 41, B-9000 Ghent (Belgium); Heynderickx, Geraldine J. [Laboratorium voor Petrochemische Techniek, Ghent University, Krijgslaan 281, Blok S5, B-9000 Ghent (Belgium); Marin, Guy B. [Laboratorium voor Petrochemische Techniek, Ghent University, Krijgslaan 281, Blok S5, B-9000 Ghent (Belgium)

2005-07-20T23:59:59.000Z

364

Model of the initiation of signal transduction by ligands in a cell culture: Simulation of molecules near a plane membrane comprising receptors  

SciTech Connect (OSTI)

Cell communication is a key mechanism in tissue responses to radiation. Several molecules are implicated in radiation-induced signaling between cells, but their contributions to radiation risk are poorly understood. Meanwhile, Green's functions for diffusion-influenced reactions have appeared in the literature, which are applied to describe the diffusion of molecules near a plane membrane comprising bound receptors with the possibility of reversible binding of a ligand and activation of signal transduction proteins by the ligand-receptor complex. We have developed Brownian dynamics algorithms to simulate particle histories in this system which can accurately reproduce the theoretical distribution of distances of a ligand from the membrane, the number of reversibly bound particles, and the number of receptor complexes activating signaling proteins as a function of time, regardless of the number of time steps used for the simulation. These simulations will be of great importance to model interactions at low doses where stochastic effects induced by a small number of molecules or interactions come into play.

Plante, Ianik [NASA Johnson Space Center, 2101 NASA Parkway, Houston, Texas 77058 (United States); Division of Space Life Sciences, Universities Space Research Association, 3600 Bay Area Boulevard, Houston, Texas 77058 (United States); Cucinotta, Francis A. [NASA Johnson Space Center, 2101 NASA Parkway, Houston, Texas 77058 (United States)

2011-11-15T23:59:59.000Z

365

On using Extreme Values to detect global stability thresholds in multi-stable systems: The case of transitional plane Couette flow  

E-Print Network [OSTI]

Extreme Value Theory (EVT) is exploited to determine the global stability threshold $R_g$ of plane Couette flow --the flow of a viscous fluid in the space between two parallel plates-- whose laminar or turbulent behavior depends on the Reynolds number R. Even if the existence of a global stability threshold has been detected in simulations and experiments, its numerical value has not been unequivocally defined. $R_g$ is the value such that for $R > R_g$ turbulence is sustained, whereas for $R energy fluctuations. When $R_g$, both the positive and negative extremes are bounded. As the critical Reynolds number is approached from above, the probability of observing a very low minimum increases causing asymmetries in the distributions of maxima and minima. On the other hand, the maxima distribution is unaffected as the fluctuations towards higher values of the perturbation energy remain bounded. This tipping point can be detected by fitting the data to the Generalized Extreme Value (GEV) distribution and by identifying $R_g$ as the value of $R$ such that the shape parameter of the GEV for the minima changes sign from negative to positive. The results are supported by the analysis of theoretical models which feature a bistable behavior.

Davide Faranda; Valerio Lucarini; Paul Manneville; Jeroen Wouters

2014-03-21T23:59:59.000Z

366

Epitaxial growth of (001)-oriented Ba{sub 0.5}Sr{sub 0.5}TiO{sub 3} thin films on a-plane sapphire with an MgO/ZnO bridge layer  

SciTech Connect (OSTI)

High quality (001)-oriented Ba{sub 0.5}Sr{sub 0.5}TiO{sub 3} (BST) thin films have been grown on a-plane sapphire (1120) by rf magnetron sputtering using a double bridge layer consisting of (0001)-oriented ZnO (50 nm) and (001)-oriented MgO (10 nm) prepared by plasma-assisted molecular beam epitaxy. X-ray diffraction revealed the formation of three sets of in-plane BST domains, offset from one another by 30 deg., which is consistent with the in-plane symmetry of the MgO layer observed by in situ reflective high electron energy diffraction. The in-plane epitaxial relationship of BST, MgO, and ZnO has been determined to be BST [110]//MgO [110]//ZnO [1120] and BST [110]/MgO [110]//ZnO [1100]. Capacitance-voltage measurements performed on BST coplanar interdigitated capacitor structures revealed a high dielectric tunability of up to 84% at 1 MHz.

Xiao Bo; Liu Hongrui; Avrutin, Vitaliy; Leach, Jacob H.; Rowe, Emmanuel; Liu Huiyong; Oezguer, Uemit; Morkoc, Hadis [Department of Electrical and Computer Engineering, Virginia Commonwealth University, Richmond, Virginia 23284 (United States); Chang, W.; Alldredge, L. M. B.; Kirchoefer, S. W.; Pond, J. M. [Naval Research Laboratory Washington, Washington, DC 20375 (United States)

2009-11-23T23:59:59.000Z

367

The Astrophysical Journal, 762:98 (8pp), 2013 January 10 doi:10.1088/0004-637X/762/2/98 C 2013. The American Astronomical Society. All rights reserved. Printed in the U.S.A.  

E-Print Network [OSTI]

likely has an inclined orbital plane. The tilted disk is subject to the Lense­Thirring torque, which a Blandford­Znajek jet collimated by a wind launched near the Bardeen­Petterson radius. Through simulations configurations. From the data we infer that the inclination angle of the initial stellar orbit is in the range

Zhang, Bing

368

Solar Phys (2011) 270: 331346 DOI 10.1007/s11207-011-9722-9  

E-Print Network [OSTI]

) inclination with respect to the ecliptic plane have been referred to as bipolar (unipolar) MCs. The poloidal of low inclination MC fluxropes during 1976 to 2009. The MC poloidal field cyclic reversal on the same · Solar wind 1. Introduction The magnetic structure of coronal mass ejections (CMEs) originates at the low

California at Berkeley, University of

369

General Physics I Exam 1 -Chs. 1,2,3 -Units, Motion Sep. 16, 2009 Name Rec. Instr. Rec. Time  

E-Print Network [OSTI]

, ground- speed G, and the wind velocity W. b) (8) Use your sketch to figure out the direction interval. 11. (2) T F A car moving up along an incline must have an acceleration up along the incline. 12 Manhattan. The plane's airspeed is 380 km/h, but a wind of 120 km/h is blowing towards due south. a) (6

Wysin, Gary

370

On self-sustaining processes in Rayleigh-stable rotating plane Couette flows and subcritical transition to turbulence in accretion disks  

E-Print Network [OSTI]

Subcritical transition to turbulence in Keplerian accretion disks is still a controversial issue and some theoretical progress is required in order to determine whether or not this scenario provides a plausible explanation for the origin of angular momentum transport in non-magnetized accretion disks. Motivated by the recent discoveries of exact nonlinear steady self-sustaining solutions in linearly stable non-rotating shear flows, we attempt to compute similar solutions in Rayleigh-stable rotating plane Couette flows and to identify transition mechanisms in such flows by combining nonlinear continuation methods and asymptotic theory. We obtain exact nonlinear solutions for Rayleigh-stable cyclonic regimes but show that it is not possible to compute solutions for Rayleigh-stable anticyclonic regimes, including Keplerian flow, using similar techniques. We also present asymptotic descriptions of these various problems at large Reynolds numbers that provide some insight into the differences between the non-rotating and Rayleigh-stable anticyclonic regimes and derive some necessary conditions for mechanisms analogous to the non-rotating self-sustaining process to be present in flows on the Rayleigh line. Our results demonstrate that subcritical transition mechanisms cannot be identified in wall-bounded Rayleigh-stable anticyclonic shear flows by transposing directly the phenomenology of subcritical transition in cyclonic and non-rotating wall-bounded shear flows. Asymptotic developments, however, leave open the possibility that nonlinear self-sustaining solutions may exist in unbounded or periodic flows on the Rayleigh line. These could serve as a starting point to discover solutions in Rayleigh-stable flows, but the nonlinear stability of Keplerian accretion disks remains to be determined.

F. Rincon; G. I. Ogilvie; C. Cossu

2006-12-07T23:59:59.000Z

371

NEAR-INFRARED H{sub 2} AND CONTINUUM SURVEY OF EXTENDED GREEN OBJECTS. II. COMPLETE CENSUS FOR THE NORTHERN GALACTIC PLANE  

SciTech Connect (OSTI)

We discuss 94 Extended Green Objects (EGOs) in the northern Galactic plane cataloged by Cyganowski et al., based on near-infrared narrow H{sub 2} (2.122 ?m) and continuum observations from the United Kingdom Infrared Telescope. This data set is three times larger than the one in our previous study and is unbiased by preselection. As discussed in the previous paper, the morphologies of the 4.5 ?m emission generally resemble those of the near-infrared continuum, but are different from those of the H{sub 2} emission. Of our sample, only 28% of EGOs with H{sub 2} emission show similar morphologies between 4.5 ?m and H{sub 2} emission. These results suggest that the 4.5 ?m emission mainly comes from scattered continuum from the embedded young stellar objects, and partially from H{sub 2} emission. About half of EGOs are associated with H{sub 2} outflows, if the H{sub 2} outflow incompleteness is considered. The H{sub 2} outflow detection rate for EGOs with K-band detections (61%) is significantly higher than for those without K-band detections (36%). This difference may be due to the fact that both H{sub 2} and K-band emissions are associated with outflows, i.e., H{sub 2} emission and K-band continuum are associated with shocks and outflow cavities, respectively. We also compared the correlation between the H{sub 2} outflows and Class I 44 GHz methanol masers from the literature. The methanol masers can be located upstream or downstream of the H{sub 2} outflows and some bright H{sub 2} spots or outflows are not associated with methanol masers, suggesting that methanol masers and H{sub 2} emission trace different excitation conditions.

Lee, Hsu-Tai; Karr, Jennifer; Su, Yu-Nung; Liu, Sheng-Yuan; Takami, Michihiro [Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 106, Taiwan (China); Liao, Wei-Ting [Department of Mechanical Engineering, National Taiwan University, 1 Roosevelt Rd., Section 4, Taipei 10617, Taiwan (China); Froebrich, Dirk; Ioannidis, Georgios [Centre for Astrophysics and Planetary Science, University of Kent, Canterbury CT2 7NH (United Kingdom); Lee, Yong-Hyun [Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of); Duan, Hao-Yuan, E-mail: htlee@illinois.edu [Institute of Astronomy and Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan (China)

2013-10-01T23:59:59.000Z

372

Introduction 1.1 Overview  

E-Print Network [OSTI]

the planet from the effects of the solar wind (Jacobs, 1974; Kivelson and Russell, 1995; Langel and Hinze and the horizontal plane at Earth's surface (inclination I), and the total intensity of the field (F = |B| = (X2 +Y 2

Finlay, Christopher

373

Effects of Out-of-Plane Disorder on the Nodal Quasiparticle and Superconducting Gap in Single-Layer Bi_2Sr_1.6Ln_0.4CuO_6 delta (Ln = La, Nd, Gd)  

SciTech Connect (OSTI)

How out-of-plane disorder affects the electronic structure has been investigated for the single-layer cuprates Bi{sub 2}Sr{sub 1.6}Ln{sub 0.4}CuO{sub 6+{delta}} (Ln = La, Nd, Gd) by angle-resolved photoemission spectroscopy. We have observed that, with increasing disorder, while the Fermi surface shape and band dispersions are not affected, the quasi-particle width increases, the anti-nodal gap is enhanced and the superconducting gap in the nodal region is depressed. The results indicate that the superconductivity is significantly depressed by out-of-plane disorder through the enhancement of the anti-nodal gap and the depression of the superconducting gap in the nodal region.

Hashimoto, M.

2011-01-04T23:59:59.000Z

374

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

SciTech Connect (OSTI)

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

375

Inductively coupled plasmareactive ion etching of c- and a-plane AlGaN over the entire Al composition range: Effect of BCl{sub 3} pretreatment in Cl{sub 2}/Ar plasma chemistry  

SciTech Connect (OSTI)

Inductively coupled plasma (ICP)reactive ion etching (RIE) patterning is a standard processing step for UV and optical photonic devices based on III-nitride materials. There is little research on ICP-RIE of high Al-content AlGaN alloys and for nonpolar nitride orientations. The authors present a comprehensive study of the ICP-RIE of c- and a-plane AlGaN in Cl{sub 2}/Ar plasma over the entire Al composition range. The authors find that the etch rate decreases in general with increasing Al content, with different behavior for c- and a-plane AlGaN. They also study the effect of BCl{sub 3} deoxidizing plasma pretreatment. An ICP deoxidizing BCl{sub 3} plasma with the addition of argon is more efficient in removal of surface oxides from Al{sub x}Ga{sub 1?x}N than RIE alone. These experiments show that Al{sub x}Ga{sub 1?x}N etching is affected by the higher binding energy of AlN and the higher affinity of oxygen to aluminum compared to gallium, with oxides on a-plane AlGaN more difficult to etch as compared to oxides on c-plane AlGaN, specifically for high Al composition materials. The authors achieve reasonably high etch rate (?350 nm/min) for high Al-content materials with a smooth surface morphology at a low DC bias of ??45 VDC.

Shah, Amit P.; Laskar, Masihhur R.; Azizur Rahman, A.; Gokhale, Maheshwar R.; Bhattacharya, Arnab [Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005 (India)] [Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005 (India)

2013-11-15T23:59:59.000Z

376

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  

SciTech Connect (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 (<1 Gyr) for {omega} Cen. Our intermediate-mass (super-)asymptotic giant branch (AGB) models are able to reproduce the high helium abundances, along with [N/Fe] {approx}2 and substantial O depletions if uncertainties in the treatment of convection are fully taken into account. These abundance features distinguish the bMS stars from the dominant [Fe/H] Almost-Equal-To -1.7 population. The most massive super-AGB stellar models (M{sub ZAMS} {>=} 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

377

Aerodynamics of a circular cylinder inclined to airflow and wind-induced vibrations of dry, inclined cables at high wind speeds .  

E-Print Network [OSTI]

??Cable-stayed bridges are an efficient and elegant solution to bridging long spans. Though a widely used structural system, several significant issues are still unresolved regarding (more)

Zurell, Cory

2013-01-01T23:59:59.000Z

378

Continuous Motion Produced by Vibration  

Science Journals Connector (OSTI)

A special case of motion of this kind was discussed recently by A. T. Jones. In the present note attention is called to a number of other cases in which the precise mechanism is obscure. A simple form of the phenomenon occurs when a mass is made to slip along a rough inclined plane, without loss of contact, by making the plane oscillate. This is examined mathematically. It is found that the motion may be either upwards or downwards, according to the relation between the direction of oscillation and the inclination of the plane. The results have been roughly verified by experiment.

W. B. Morton and A. McKinstry

1927-01-01T23:59:59.000Z

379

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 (OSTI)

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

380

Mn concentration dependent structural and optical properties of a-plane Zn{sub 0.99-x}Mn{sub x}Na{sub 0.01}O  

SciTech Connect (OSTI)

Non-polar a-plane (112{sup }0) Zn{sub 0.99?x}Mn{sub x}Na{sub 0.01}O (x?=?0, 0.02, 0.03, 0.04, and 0.05) thin films have been prepared on r-plane (112{sup }0) sapphire substrates by pulsed laser deposition (PLD). The influences of Mn content on the structural and optical properties of the films have been studied. It is indicated that moderate Mn doping facilitates the non-polar growth of ZnO, and all the doped films are single phase with a hexagonal wurtzite structure. The transmittance spectra suggested that all films are transparent in the visible region exhibiting a transmittance above 80%. Mn{sup 2+} doped Zn{sub 0.99}Na{sub 0.01}O shows an initial decrease of optical band gap (OBG) for small concentration of Mn, followed by a monotonic increase. The anomalous decrease in OBG for low concentrations of Mn is attributed to the strong exchange interaction present between the sp electrons of the host matrix and d electrons of Mn. Emission studies were also performed showing suppressed blue-shifted ultraviolet band and dominant violet-blue bands, which might originate from the zinc vacancy (V{sub Zn}) and zinc interstitial (Zn{sub i}) defects. The intensity of defect-related emission peaks is Mn doping-level-dependent as well and the results coincide well with that from the structural analyses.

Lu, B., E-mail: binlu@zju.edu.cn; Zhou, T. T.; Ma, M. J.; Ye, Y. H.; Ye, Z. Z.; Lu, J. G.; Pan, X. H. [State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 (China)

2013-12-14T23:59:59.000Z

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.


381

An electrical accelerometer  

E-Print Network [OSTI]

. Inclined Plane and Accelerometer 17 10, Photograph of Rsctijfied Timing Wave and Enlarged Ripples of Power Supply lli Table 2, Acceleration of Metal Ball on Inclined Plans 12. Photographic Exposure No. 2 13. Photographic Exposure No. 5 ~ 14... acceleration, or would the arc have soma finite measurable rate of change of velocityT To answer these questions it became necessary for some means to be devised for the accurate measurement of the arc acceleration. The accelerometer used to measure this ac...

Poe, Herbert Vernon

1950-01-01T23:59:59.000Z

382

Enhancing performance during inclined loaded walking with a powered anklefoot exoskeleton  

Science Journals Connector (OSTI)

A simple anklefoot exoskeleton that assists plantarflexion during push-off can reduce the metabolic power during walking. This suggests that walking performance ... during a maximal incremental exercise test wit...

Samuel Galle; Philippe Malcolm; Wim Derave

2014-11-01T23:59:59.000Z

383

Circularly Inclined Solenoid Channel for 6D Ionization Cooling of Muons  

SciTech Connect (OSTI)

Ionization cooling is essential for realization of Muon Collider, muons beam based neutrino factories and other experiments involving muons. The simplest structure - absorber(s) immersed in alternating solenoidal magnetic field - provides only transverse cooling since the longitudinal motion in the most suitable momentum range (2-300MeV/c) is naturally anti-damped. To overcome this difficulty it is proposed to periodically tilt solenoids so that a rotating transverse magnetic field was created. By choosing the phase advance per period above a multiple of 2{pi} it is possible to ensure that muons with higher momentum make a longer path in the absorber (whether distributed or localized) thus providing longitudinal damping. Basic theory of such channel and results of tracking simulations are presented.

Alexahin, Y.; /Fermilab

2009-05-01T23:59:59.000Z

384

Palaeogeographic implications of differential inclination shallowing in permo-carboniferous sediments from the donets basin, Ukraine  

E-Print Network [OSTI]

-carboniferous sediments from the donets basin, Ukraine Alexandr G. Iosifidi a , Conall Mac Niocaill b, , Alexei N. Khramov, Ukraine, part of the Palaeozoic East European Platform. Detailed demagnetization of these units reveals

Utrecht, Universiteit

385

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

386

Great inclination to smoke among younger adults coming from low-socioeconomic class in Thailand  

Science Journals Connector (OSTI)

We found that smoking prevalence in Thailand were particularly high among younger adults from low-socioeconomic class. The rate of smoking prevalence among low ... that among other age groups. Such a greater diff...

Sunsanee Mekrungrongwong; Keiko Nakamura

2011-08-01T23:59:59.000Z

387

The dispersion of dense effluent from an inclined jet discharging into still fluid  

E-Print Network [OSTI]

. Reid This thesis considers the dispersion of a dense effLuent, such as discharged by a desalination plant, in s. still, initially homogeneous fluid. The solution - s applica'ble near the effluent source where the momen- tum of the source... on the jet axis as a function of s E 0 F J 0 centerline value of s at the orifice nozzle densimetric Froude numbe: local densimetric Froude number acceleration due to gravity momentum transport from the source turbulent exchange co ff'cient defined...

Mitchell, Thomas Mark

2012-06-07T23:59:59.000Z

388

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

E-Print Network [OSTI]

FUNDING ACKNOWLEDGEMENTS ........................................................................ 221 REFERENCES ............................................................................................................... 222 APPENDIX A... Ignition Facility (NIF). ........................................................................................................... 23 Figure 2.1: Schematic of the Texas A&M University Shock Tube Facility. ................... 26 Figure 2.2: X-T plots...

Mcfarland, Jacob Andrew

2013-08-12T23:59:59.000Z

389

An Experimental Study of the Effect of Reshock on the Inclined Interface Richtmyer-Meshkov Instability  

E-Print Network [OSTI]

at the National Ignition Facility (NIF) [23] at Lawrence Livermore National Laboratory (LLNL). The National Ignition Facility is a prime example of the integrated progress of simulations and experiments. While experiments are being developed and performed... new fission fuel, from elements that are readily available in ocean water. Current developmental work in ICF is being done at the National Ignition Facility at Lawrence Livermore National Lab. In their work, the fuel target is compressed through...

Creel, Skylar

2014-04-29T23:59:59.000Z

390

Droplets on Inclined Plates: Local and Global Hysteresis of Pinned Capillary Surfaces  

E-Print Network [OSTI]

Local contact line pinning prevents droplets from rearranging to minimal global energy, and models for droplets without pinning cannot predict their shape. We show that experiments are much better described by a theory, developed herein, that does account for the constrained contact line motion, using as example droplets on tilted plates. We map out their shapes in suitable phase spaces. For 2D droplets, the critical point of maximum tilt depends on the hysteresis range and Bond number. In 3D, it also depends on the initial width, highlighting the importance of the deposition history.

Michiel Musterd; Volkert van Steijn; Chris R. Kleijn; Michiel T. Kreutzer

2014-07-27T23:59:59.000Z

391

Constraints on (Omega_m,Omega_Lambda) using distributions of inclination angles for high redshift filaments  

E-Print Network [OSTI]

In this paper we present a scale free method to determine the cosmological parameters (Omega_m, Omega_Lambda). The method is based on the requirement of isotropy of the distribution of orientations of cosmological filaments. The current structure formation paradigm predicts that the first structures to form are voids and filaments, causing a web-like structure of the matter distribution at high redshifts. Recent observational evidence suggests that the threads, or filaments, of the cosmic web most easily are mapped in Ly-alpha emission. We describe how such a 3D map can be used to constrain the cosmological parameters in a way which, contrary to most other cosmological tests, does not require the use of a standard rod or a standard candle. We perform detailed simulations in order to define the optimal survey parameters for the definition of an observing programme aimed to address this test, and to investigate how statistical and observational errors will influence the results. We conclude that observations should target filaments of comoving size 15-50 Mpc in the redshift range 2-4, and that each filament must be defined by at least four Ly-alpha emitters. Detection of 20 filaments will be sufficient to obtain a result, while 50 filaments will make it possible to place significant new constraints on the values of Omega_m and Omega_Lambda permitted by the current supernova observations. In a future paper we study how robust these conclusions are to systematic velocities in the survey box.

M. Weidinger; P. Moller; J. P. U. Fynbo; B. Thomsen; M. P. Egholm

2002-05-24T23:59:59.000Z

392

The cusp horseshoe and its bifurcations in the unfolding of an inclination-ip homoclinic orbit  

E-Print Network [OSTI]

Jan Homburg Department of Mathematics Rijksuniversiteit Groningen PB 800, 9700 AV Groningen Martin Krupa Department of Mathematics Rijksuniversiteit Groningen PB 800, 9700 AV Groningen

Kokubu, Hiroshi

393

Spectral modeling of two incline cylinders with validation in the time domain  

E-Print Network [OSTI]

Clusters of long slender members such as risers or tendons are commonly found on deep water offshore platforms. Current practice is to space these slender structural members far enough apart to assume that they behave as a single cylinder without...

Oswalt, Aaron Jacob

2012-06-07T23:59:59.000Z

394

The east-west inclination of magnetic field lines in sunspots  

Science Journals Connector (OSTI)

Digitized Mount Wilson sunspot data covering the interval from 1917 to 1985 are analyzed to examine the average areas of individual sunspot umbrae over small zones of central meridian distance. Assuming that s...

Robert F. Howard

1992-02-01T23:59:59.000Z

395

A class of warm Jupiters with mutually inclined, apsidally misaligned close friends  

Science Journals Connector (OSTI)

...Queried from the Exoplanet Orbit Database (EOD) at exoplanets.org...use the corrected elements reported by the EOD. 55 Pilyavsky G. Mahadevan S. Kane...20034250 58 Original solution listed in EOD. 59 Correia A. C. M. Udry S. Mayor...

Rebekah I. Dawson; Eugene Chiang

2014-10-10T23:59:59.000Z

396

Magnetic anisotropy as a correction for compaction-caused palaeomagnetic inclination shallowing  

Science Journals Connector (OSTI)

......Karlin R. ,Magnetic mineral diagenesis in suboxic sediments at Bettis site W-N, NE Pacific Ocean, J. Geophys. Res., 1990...1990. Magnetic mineral diagenesis in suboxic sediments at Bettis site W-N, NE Pacific Ocean, J. Geophys. Res.. 95B......

K. P. Kodama; W. W. Sun

1992-12-01T23:59:59.000Z

397

The jet kinetic power, distance and inclination of GRS 1915+105  

E-Print Network [OSTI]

We apply a recently developed technique of calculating the minimum jet kinetic power to the major mass ejections of the black-hole binary GRS 1915+105 observed in radio wavelengths in 1994 and 1997. We derive for them the distance-dependent minimum power, the mass flow rate, the total energy content and the total mass. We find that a very fast increase of the jet power with the increasing distance combined with a known relation between the jet kinetic power and luminosity imply the source distance is 9 kpc.

Zdziarski, Andrzej A

2014-01-01T23:59:59.000Z

398

Experimental Study of the Richtmyer-Meshkov Instability on Inclined Interface  

E-Print Network [OSTI]

Laboratory, Report UCRL-LR-110500, in final preparation. (2003). [8] Anderson, M.H., Puranik, B.P., Oakley, J.G., Brooks, P.W., Bonazza, R.: Shock tube investigation of hydrodynamic issues related to inertial confinement fusion. Shock Waves. 10, 377... Laboratory, Report UCRL-LR-110500, in final preparation. (2003). [8] Anderson, M.H., Puranik, B.P., Oakley, J.G., Brooks, P.W., Bonazza, R.: Shock tube investigation of hydrodynamic issues related to inertial confinement fusion. Shock Waves. 10, 377...

McDonald, Christopher Michael

2013-02-06T23:59:59.000Z

399

CLEANING OF VISCOUS DROPS ON A FLAT INCLINED SURFACE USING GRAVITY-DRIVEN FILM FLOWS  

E-Print Network [OSTI]

roughness, or some solid particles or micro bubbles stuck on the surface. In figure 4(a), we can see that the impact of the obstacle on the streamwise velocity is very limited upstream, but spreads laterally due to the formation of stationary capillary... 18, 052104. Cerro, R. L. and Whitaker, S. (1971a) Stability of falling liquid films, Chem. Eng. Sc. 26, 742-745. Cerro, R. L. and Whitaker, S. (1971b) Entrance region flows with a free surface: the falling liquid film, Chem. Eng. Sc. 26, 785...

Landel, Julien R.; McEvoy, Harry; Dalziel, Stuart B.

2014-10-07T23:59:59.000Z

400

The Effect of the Inclined Angel on the Output in a Solar Chimney Power Plant System  

Science Journals Connector (OSTI)

Numerical simulation in large-scale solar chimney is not usually studied in previous study. ... In this paper, the height of the chimney is 1km, and the collector radius is ... used in the entrance and exit of th...

J. M. Sun; M. Yang; Y. G. Shan

2007-01-01T23:59:59.000Z

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.


401

A comparison of the dynamic stiffness of the Goldcrown GC-500 grinding machine for three slide designs  

SciTech Connect (OSTI)

This report provides a summary of the results obtained from the calculations that compare the dynamic stiffness of three slide design systems for the Goldcrown GC-500 centerless grinder; it also describes the models and procedures used to develop the calculations, the assumptions made, and the details that went into performing this work. The authors developed analytical models of the three Goldcrown slide designs and performed several computational studies to determine the dynamic stiffness of the designs. The three slide systems are hereafter referred to as the plane slide, the INA slide, and the polymer-coated slide. The plane slide is the dovetail slide and way traditionally used in machine tool designs. The INA slide is a design created by Goldcrown using INA Bearing Company recirculating roller bearings, and dampers on a rail guideway. The polymer-coated slide is a design using a low friction polymer coating for a modified plane slide system. A study of the drawings indicated that a comparison could be made, within a reasonable amount of time and effort, that would be indicative of the dynamic stiffness of the three designs if the machine was modeled as being composed of the following seven structural components: (1) the base, (2) the swivel plate, (3) the lower slide, (4) the upper housing, (5) the regulating wheel housing, (6) the ball screw, and (7) the in-feed body.

Bennett, J.G.; Goldman, P.; Williams, D.C.; Farrar, C.R.

1994-01-01T23:59:59.000Z

402

Implementing cutting plane management and selection techniques  

E-Print Network [OSTI]

This quantity is also well-known as the distance cut off by a cut. Using the. Euclidean ... and x1 ? 2 are valid for X and cut off x?. ... Rotated Distance Cook et al.

2012-12-20T23:59:59.000Z

403

Particle Impact Damping in the Horizontal Plane  

E-Print Network [OSTI]

and the acceleration of gravity g. Butt and Akl [2] performed a numerical analysis of an impact damper applied to a cantilever beam undergoing forced steady-state oscillations. The continuous beam was modeled as a multi-degree of freedom (MDOF) system rather than... packing ratio and vibration frequency. 5 Masri [8] developed an exact solution of the general steady-state response of a forced steady-state horizontally excited system with an impact damper. The motion of the system was taken as a piecewise...

Witt, Bryan

2012-07-16T23:59:59.000Z

404

Using Jacobi Plane Rotations in R  

E-Print Network [OSTI]

lll)) jSimDiageps=1e-10,itmax=100,vectors=TRUE,n") if (((fold-fnew) eps) || (itel == itmax)) break() itelk=kk)) jSimSVDeps=1e-6,itmax=1000,vectors=TRUE,

de Leeuw, Jan

2008-01-01T23:59:59.000Z

405

Rectangular Parallelepiped Vibration in Plane Strain State  

E-Print Network [OSTI]

In this paper we present a vibration spectrum of a homogenous parallelepiped (HP) under the action of volume and surface forces resulting from the exponent displacements entering the Fourier transforms. Vibration under the action of axial surface tractions and the free vibration are described separately. A relationship between the high frequency vibration and boundary conditions (BC) is also considered.

Jerzy Hanckowiak

2004-11-25T23:59:59.000Z

406

Comparison between Gaussian-type orbitals and plane wave ab initio density functional theory modeling of layer silicates: Talc [Mg{sub 3}Si{sub 4}O{sub 10}(OH){sub 2}] as model system  

SciTech Connect (OSTI)

The quantum chemical characterization of solid state systems is conducted with many different approaches, among which the adoption of periodic boundary conditions to deal with three-dimensional infinite condensed systems. This method, coupled to the Density Functional Theory (DFT), has been proved successful in simulating a huge variety of solids. Only in relatively recent years this ab initio quantum-mechanic approach has been used for the investigation of layer silicate structures and minerals. In the present work, a systematic comparison of different DFT functionals (GGA-PBEsol and hybrid B3LYP) and basis sets (plane waves and all-electron Gaussian-type orbitals) on the geometry, energy, and phonon properties of a model layer silicate, talc [Mg{sub 3}Si{sub 4}O{sub 10}(OH){sub 2}], is presented. Long range dispersion is taken into account by DFT+D method. Results are in agreement with experimental data reported in literature, with minimal deviation given by the GTO/B3LYP-D* method regarding both axial lattice parameters and interaction energy and by PW/PBE-D for the unit-cell volume and angular values. All the considered methods adequately describe the experimental talc infrared spectrum.

Ulian, Gianfranco; Valdr, Giovanni, E-mail: giovanni.valdre@unibo.it [Dipartimento di Scienze Biologiche e Geologico-Ambientali, Centro di Ricerca Interdisciplinare di Biomineralogia, Cristallografia e Biomateriali, Universit di Bologna Alma Mater Studiorum Piazza di Porta San Donato 1, 40126 Bologna (Italy)] [Dipartimento di Scienze Biologiche e Geologico-Ambientali, Centro di Ricerca Interdisciplinare di Biomineralogia, Cristallografia e Biomateriali, Universit di Bologna Alma Mater Studiorum Piazza di Porta San Donato 1, 40126 Bologna (Italy); Tosoni, Sergio [Departament de Qumica Fsica and Institut de Qumica Terica i Computacional (IQTCUB), Universitat de Barcelona, C/ Mart i Franqus 1, E-08028 Barcelona (Spain)] [Departament de Qumica Fsica and Institut de Qumica Terica i Computacional (IQTCUB), Universitat de Barcelona, C/ Mart i Franqus 1, E-08028 Barcelona (Spain)

2013-11-28T23:59:59.000Z

407

Transition from two-dimensional electron-hole to geminate-exciton photoluminescence in GaAs?AlxGa1?xAs heterostructures under a high in-plane magnetic field  

Science Journals Connector (OSTI)

We studied the evolution of the photoluminescence (PL) spectra in modulation-doped GaAs-based heterostructures (single quantum wells and heterojunctions) at TL=1.2K under a high magnetic field B (up to 33T), which was applied parallel to the two-dimensional electron gas (2DEG) layer. Under low in-plane fields, B?<7T, the radiative recombination of the photoexcited hole with the 2DEG gives rise to a broad PL band that shifts quadratically with B?. This band transforms into a narrow PL line whose peak energy E shifts linearly with B? in the range of 1033T. The slope of the linear E(B) dependence was measured as ?ex=0.770.02meV?T in all the studied structures. The same linear slope is also measured in the PL spectra of bulk, undoped GaAs under high B. We thus attribute the sharp PL line observed in the doped heterostructures to magnetoexcitons that are photogenerated outside the 2DEG layer by a geminate formation process. The slope of the magnetoexciton energy dependence on B? is compared with that measured for unbound-electronhole Landau level transitions under a perpendicular B?. The ratio of the measured slopes, ?ex??0?0.8, is found to be equal to the ratio of the reduced excitonic mass to the reduced cyclotron mass of GaAs.

B. M. Ashkinadze, E. Cohen, V. V. Rudenkov, P. C. M. Christianen, J. C. Maan, and L. N. Pfeiffer

2007-08-27T23:59:59.000Z

408

Calculation of direct and indirect excitons in GaAs?Ga1?xAlxAs coupled double quantum wells: The effects of in-plane magnetic fields and growth-direction electric fields  

Science Journals Connector (OSTI)

The variational procedure, in the effective-mass and parabolic-band approximations, is used in order to investigate the effects of crossed electric and magnetic fields on the exciton states in GaAs?Ga1?xAlxAs coupled double quantum wells. Calculations are performed for double quantum wells under applied magnetic fields parallel to the layers and electric fields in the growth direction. The exciton envelope wave function is obtained through a variational procedure using a hydrogenic 1s-like wave function and an expansion in a complete set of trigonometric functions for the electron and hole wave functions. We take into account intersubband mixing brought about by the Coulomb interaction of electron-hole pairs in double quantum wells and present a detailed analysis of the properties of direct and indirect exciton states in these systems. The present study clearly reveals anticrossing effects on the dispersion with applied voltage (or growth-direction electric field) of the photoluminescence peaks associated with direct and indirect excitons. Calculated results are found in good agreement with available experimental measurements on the photoluminescence peak position associated with direct and indirect excitons in GaAs-Ga1?xAlxAs double quantum wells under growth-direction applied electric fields or under applied in-plane magnetic fields.

M. de Dios-Leyva, C. A. Duque, and L. E. Oliveira

2007-08-02T23:59:59.000Z

409

M/L{sub B} AND COLOR EVOLUTION FOR A DEEP SAMPLE OF M* CLUSTER GALAXIES AT z {approx} 1: THE FORMATION EPOCH AND THE TILT OF THE FUNDAMENTAL PLANE , ,  

SciTech Connect (OSTI)

We have measured velocity dispersions ({sigma}) for a sample of 36 galaxies with J < 21.2 or M{sub r} < -20.6 mag in MS 1054-03, a massive cluster of galaxies at z = 0.83. Our data are of uniformly high quality down to our selection limit, our 16 hr exposures typically yielding errors of only {delta}({sigma}) {approx} 10% for L* and fainter galaxies. By combining our measurements with data from the literature, we have 53 cluster galaxies with measured dispersions, and HST/ACS-derived sizes, colors and surface brightness. This sample is complete for the typical L* galaxy at z {approx} 1, unlike most previous z {approx} 1 cluster samples which are complete only for the massive cluster members (>10{sup 11} M{sub sun}). We find no evidence for a change in the tilt of the fundamental plane (FP). Nor do we find evidence for evolution in the slope of the color-{sigma} relation and M/L{sub B} -{sigma} relations; measuring evolution at a fixed {sigma} should minimize the impact of structural evolution found in other work. The M/L{sub B} at fixed {sigma} evolves by {Delta}log{sub 10} M/L{sub B} = -0.50 {+-} 0.03 between z = 0.83 and z = 0.02 or dlog{sub 10} M/L{sub B} = -0.60 {+-} 0.04 dz, and we find {Delta}(U - V){sub z} = -0.24 {+-} 0.02 mag at fixed {sigma} in the rest frame, matching the expected evolution in M/L{sub B} within 2.25 standard deviations. The implied formation redshift from both the color and M/L{sub B} evolution is z{sub *} = 2.0 {+-} 0.2 {+-} 0.3(sys), during the epoch in which the cosmic star formation activity peaked, with the systematic uncertainty showing the dependence of z{sub *} on the assumptions we make about the stellar populations. The lack of evolution in either the tilt of the FP or in the M/L-{sigma} and color-{sigma} relations imply that the formation epoch depends weakly on mass, ranging from z{sub *} = 2.3{sup +1.3}{sub -0.3} at {sigma} = 300 km s{sup -1} to z{sub *} = 1.7{sup +0.3}{sub -0.2} at {sigma} = 160 km s{sup -1} and implies that the initial mass function similarly varies slowly with galaxy mass.

Holden, B. P.; Illingworth, G. D. [UCO/Lick Observatories, University of California, Santa Cruz, CA 95065 (United States); Van der Wel, A. [Max-Planck Institute for Astronomy, Koenigstuhl 17, D-69117, Heidelberg (Germany); Kelson, D. D. [Observatories of the Carnegie Institution of Washington, Pasadena, CA 91101 (United States); Franx, M., E-mail: holden@ucolick.or, E-mail: gdi@ucolick.or, E-mail: vdwel@mpia.d, E-mail: kelson@obs.carnegiescience.ed, E-mail: franx@strw.leidenuniv.n [Sterrewacht Leiden, P.O. Box 9513, 2300 RA, Leiden (Netherlands)

2010-11-20T23:59:59.000Z

410

Further correspondences between plane piezoelectricity and generalized plane strain in elasticity  

Science Journals Connector (OSTI)

...conditions which do not vary along the generator. We show that our previous correspondence...lateral surface which do not vary along the generators. It was proven that when the piezoelectric...4.4) in which Bi is the magnetic induction, Hi is the magnetic field intensity...

1998-01-01T23:59:59.000Z

411

Elliptic flow: transition from out-of-plane to in-plane emissionin Au + Au collisions  

SciTech Connect (OSTI)

We have measured the proton elliptic flow excitation function for the Au+Au system spanning the beam energy range (2-8)A GeV. The excitation function shows a transition from negative to positive elliptic flow at a beam energy, Etr {approx} 4A GeV. Detailed comparisons with calculations from a relativistic Boltzmann equation are presented. The comparisons suggest a softening of the nuclear equation of state from a stiff form (K {approx} 380 MeV) at low beam energies (Ebeam < 2A GeV) to a softer form (K {approx} 210 MeV) at higher energies ( Ebeam < 4A GeV) where the calculated baryon density rho {approx} 4 rho 0.

Pinkenburg, C.; Ajitanand, N.N.; Alexander, J.M.; Anderson, M.; Best, D.; Brady, F.P.; Case, T.; Caskey, W.; Cebra, D.; Chance, J.L.; Chung, P.; Cole, B.; Crowe, K.; Das, A.C.; Draper, J.E.; Elmaani, A.; Gilkes, M.L.; Gushue, S.; Heffner, M.; Hirsch, A.S.; Hjort, E.L.; Huo,L.; Justice, M.; Kaplan, M.; Keane, D.; Kintner, J.C.; Klay, J.; Krofcheck, D.; Lacey, R.A.; Lauret, J.; Law, C.; Lisa, M.A.; Liu, H.; Liu, Y.M.; McGrath, R.; Milosevich, Z.; Odyniec, G.; Olson, D.L.; Panitkin, S.Y.; Porile, N.T.; Rai, G.; Ritter, H.G.; Romero, J.L.; Scharenberg, R.P.; Schroeder, L.; Srivastava, B.; Stone, N.T.B.; Symons,T.J.M.; Whitfield, J.; Wienold, T.; Witt, R.; Wood, L.; Zhang, W.N.; E895Collaboration; Danielewicz, P.; Gossiaux, P.B.

1999-07-31T23:59:59.000Z

412

The Role of Contextual Framing: Assessments, Classroom Practice, and Student Perceptions  

E-Print Network [OSTI]

performance on assessments. This study seeks to identify some of the main influences of this effect problems on assessments and deepens curiosity about the exact effect of contextual framing in the classroom rolling on an inclined plane, a rocket ship flying overhead, or no explanation), and the mode

Colorado at Boulder, University of

413

The Brennan Mono-Rail System  

Science Journals Connector (OSTI)

... on one of the sharp curves. In this illustration may be noticed the radiators for cooling the circulating water required for the petrol motors, these radiators being secured to the ... car platform at the other, so as to extend the inclined plane of the platform down to ground-level. The packing cases were then easily shoved off without the assistance ...

1910-03-03T23:59:59.000Z

414

ROLE OF SOIL BEHAVIOR ON THE INITIAL KINEMATICS OF TSUNAMIGENIC SLIDES  

E-Print Network [OSTI]

ROLE OF SOIL BEHAVIOR ON THE INITIAL KINEMATICS OF TSUNAMIGENIC SLIDES A.S. BRADSHAW Department acceleration of the failure itself. In a number of these studies, a translational slide is modeled as a rigid body sliding down an inclined plane and basal resistance is neglected. In this paper, a similar rigid

Grilli, Stéphan T.

415

The INTERBALL-Tail ELECTRON experiment: initial results on the low-latitude boundary layer of the dawn magnetosphere  

E-Print Network [OSTI]

was launched on 3 August 1995 together with a subsatellite into a 65° inclination orbit with an apogee of about orbit plane drifts across the magnetosphere and the solar wind, thus sweeping the dayside solar wind entry into the magnetosphere, to large-scale plasma convection, to solar-wind energy accumulation

Paris-Sud XI, Université de

416

Ris-R-1364(EN) Characterisation and Classification of  

E-Print Network [OSTI]

to Inclined Flow 28 5.6 Response to Plane Sinusoidal Longitudinal Wind Speed Fluctuations 29 6 CLASSCUP/s and turbulence intensities of 10%, 16% and 23%; step response measurements at step wind speeds 4, 8, 12 and 15m. The characteristics are fitted to a time domain cup anemometer model, and deviations in wind speed reading

417

PHYSICAL REVIEW E 85, 061301 (2012) Shock propagation in granular flow subjected to an external impact  

E-Print Network [OSTI]

. Examples include crater formation by wind jets in the context of lunar cratering [5], viscous fingering flowing on an inclined glass plane. In the experiment a steel ball, much larger in size than an individual, devoid of glass beads, whose radius increases with time. This radius was measured using high speed

Ravindran, Rajesh

418

Design and Construction Integration of a Continuous Precast Prestressed Concrete Bridge System  

E-Print Network [OSTI]

An effective, viable design solution for the elevated viaduct guideway for Universal Freight Shuttle (UFS) system championed by Texas Transportation Institute (TTI) is presented. The proposed precast elevated UFS bridge system is analyzed...

Roy, Subha Lakshmi 1982-

2011-04-15T23:59:59.000Z

419

Determination of the optimum inclination of a flat solar collector in function of latitude and local climatic data  

E-Print Network [OSTI]

. A heliostat where a system of mechanical gear allows to follow the sun and to keep an incidence angle equal

Paris-Sud XI, Université de

420

Rock magnetic evidence for inclination shallowing in the early Carboniferous Deer Lake Group red beds of western Newfoundland  

Science Journals Connector (OSTI)

......as indicated by the thick coal deposits that characterize...Hacquebard P.A. , 1970. Coal in Southeastern Canada, Geol. Survey of Canada, Economic Geology Report 1. Hacquebard...R., 1969. Carboniferous coal deposition associated with......

Dario Bilardello; Kenneth P. Kodama

2010-04-01T23:59:59.000Z

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

On the Rank of Cutting-Plane Proof Systems  

E-Print Network [OSTI]

Feb 16, 2013 ... Schrijver Lovsz and Schrijver [1991] were given in Cook and Dash [2001], ...... Then it has to cut off a one-dimensional face F of [0, 1]n, which...

Sebastian Pokutta, Andreas S. Schulz

2013-02-16T23:59:59.000Z

422

Dynamic whole-arm dexterous manipulation in the plane  

E-Print Network [OSTI]

, and a backplate onto which the palm is attached. All of these parts are made of aluminium. Holding each finger in place is a shaft from a torque sensor. The actuator consists of a permanent magnet dc motor, harmonic drive gearing, and an optical... are using has a magnetic field that is provided by a permanent magnet. So the field can be considered a constant in our model. We supply a current through the armature winding of the dc motor so 20 finger 2 finger 1 object to be manipulated Qo aim...

Yeap, Soon Lin

1994-01-01T23:59:59.000Z

423

Unique Sensor Plane Maps Invisible Toxins for First Responders  

SciTech Connect (OSTI)

A unique airborne emergency response tool, ASPECT is a Los Alamos/U.S. Environmental Protection Agency project that can put chemical and radiological mapping tools in the air over an accident scene. The name ASPECT is an acronym for Airborne Spectral Phot

2008-04-30T23:59:59.000Z

424

The slopes determined by n points in the plane  

E-Print Network [OSTI]

field k,andletG be a graph with vertices V and edges E.Apicture P of G consists of a point P(v)for each vertex and a line P(e) for each edge, subject to the condition that P(v) ? P(e) whenever v is an endpoint of e.Thusthedataofn points and parenleftbig... n 2 parenrightbig lines described earlier is a picture of the complete graph K n on n vertices. The set of all pictures of G is called the picture space X(G). A picture is generic if the points P(v) are all different; the closure of the locus...

Martin, Jeremy L.

2006-01-01T23:59:59.000Z

425

Cross plane transfer of vestibular adaptation to human centrifugation  

E-Print Network [OSTI]

Human short-radius centrifugation (SRC) is being investigated as a volume-efficient means of delivering intermittent doses of "artificial gravity" to counter the deleterious effects of long exposures to weightlessness. ...

Garrick-Bethell, Ian, 1980-

2004-01-01T23:59:59.000Z

426

Taking Tekkotsu Out Of The Plane Jonathan A. Coens  

E-Print Network [OSTI]

combination of arm trajectories and body motions. The robot successfully competed in the AAAI-2010 Small-Scale--playing chess on a real chessboard--provided motivation to upgrade these primitives to handle the third

427

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

E-Print Network [OSTI]

Jun 1, 2006 ... France Tlcom, Division R&D, CORE-MCN, 38-40 rue du Gnral Leclerc, 92794 ...... The problem data for TSP29, TSP120 and TSP442 have...

2006-04-27T23:59:59.000Z

428

Wiggler plane focusing in a linear free electron laser  

DOE Patents [OSTI]

This disclosure describes a 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, E.T.

1985-11-21T23:59:59.000Z

429

An analytic center cutting plane approach for conic programming  

E-Print Network [OSTI]

We generalize the results obtained for the LP, SDP and SOCP cases. ... Introduction In this paper we will analyze the feasibility problem: ..... z ). A final definition:...

Megiddo

2005-06-22T23:59:59.000Z

430

Hardware Accelerated Impairment Aware Control Plane Yixuan Qin1  

E-Print Network [OSTI]

element (PCE) cen- tralised approach. The PCE receives the path calculation request (e.g. from the Network through the network. The PCE communication protocol (PCEP) is the protocol used to communicate between the PCE and the path computation client (PCC) and between PCEs for inter-domain path calculation. Upon

Vlachos, Kyriakos G.

431

Properties of a Cutting Plane Method for Semidefinite Programming1  

E-Print Network [OSTI]

Jul 11, 2012 ... The dimension of this face is one measure of the strength of this hyperplane. .... corresponding to A, so the range of BT is exactly the kernel of A. From Assumption 1, ..... iterations (this analysis is for a short step algorithm). ...... editors

2012-07-11T23:59:59.000Z

432

The EVN Galactic Plane Survey EGaPS  

Science Journals Connector (OSTI)

......observed through a high plasma density near the Galactic...to evaluate the atmosphere opacity; (c) to...record within 720 MHz, three stations equipped...resolution of 125 kHz. These correlation...increased by 0.5 MHz after each run. Since...cross-spectrum, 125 kHz, which corresponds......

Leonid Petrov

2012-01-11T23:59:59.000Z

433

B-spline finite elements for plane elasticity problems  

E-Print Network [OSTI]

. The k-refinement is reported to be much more efficient and robust than the standard h or p- refinement used in the conventional FEM models. Besides the use of B-spline functions for structural problems, they have been used in some other fields as well... and convergence behavior. The paper reports a reduction in the numerical cost using B-spline FEM. The use of the B-spline finite element method for the thermistor problem [29,30] and for a numerical solution of Burger?s equation[31- 33] has been successfully...

Aggarwal, Bhavya

2007-04-25T23:59:59.000Z

434

An evaluation of in-plane shields during thoracic CT  

Science Journals Connector (OSTI)

......non-parametric image quality data were analysed using Kruskal-Wallis tests with pairwise comparisons done using the Mann-Whitney...routine thorax (b) CTPA and (c) CCTA examinations. Kruskal-Wallis testing followed by pairwise comparisons using the......

S. J. Foley; M. F. McEntee; L. A. Rainford

2013-08-01T23:59:59.000Z

435

Procedure for Performing In-Plane Membrane Conductivity Testing  

Broader source: Energy.gov [DOE]

Presented at the 2009 High Temperature Membrane Working Group Meeting held May 18, 2009, in Arlington, Virginia

436

In-Plane Conductivity Testing Procedures and Results  

Broader source: Energy.gov [DOE]

This presentation on conductivity testing was given at the High Temperature Membrane Working Group Meeting in May 2007.

437

Unique Sensor Plane Maps Invisible Toxins for First Responders  

ScienceCinema (OSTI)

A unique airborne emergency response tool, ASPECT is a Los Alamos/U.S. Environmental Protection Agency project that can put chemical and radiological mapping tools in the air over an accident scene. The name ASPECT is an acronym for Airborne Spectral Phot

None

2010-01-08T23:59:59.000Z

438

Intelligent Energy, Boeing to develop fuel cell plane  

Science Journals Connector (OSTI)

UK-based PEM fuel cell producer Intelligent Energy has been selected by US aerospace giant Boeing as a partner to develop the worlds first fuel-cell-powered aeroplane for manned flight. Fuel cells will be used to replace auxiliary power units (APUs), improving fuel efficiency. Visit www.re-focus.net for the latest renewable energy industry news

2003-01-01T23:59:59.000Z

439

Implementing the simplex method as a cutting-plane method  

E-Print Network [OSTI]

This is achieved by a broad enough initial set of cuts as we assumed that the ...... zation: Proceedings of the 4th French-German Conference on Optimization...

2011-06-26T23:59:59.000Z

440

Fortuitously Superimposed Lattice Plane Secondary Diffraction from Crystalline Colloidal Arrays  

E-Print Network [OSTI]

. Experimental Section Monodisperse colloidal silica spheres were obtained from Nissan Chemical Industries, Ltd was observed. The silica CCA suspensions were injected between two quartz plates separated by 6.1 µm thick

Asher, Sanford A.

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

Forced two layer beta-plane quasi-geostrophic flow  

E-Print Network [OSTI]

that our unique weak solution is in fact a classical solution. In addition we will prove that the mentioned solution is time and space analytic. Meantime, L. Panetta, E. Titi and M. Ziane have announced in [14] existence and uniqueness results (as well as a... = (-partialdiffpsipartialdiffx2 , partialdiffpsipartialdiffx1 ), (x1, x2) are horizontal coordinates, F and D are forcing and dissipation terms, and Q is related to psi by a linear differential operator L in space variables Q = L[psi]. (2.3) Different choices for L give...

Onica, Constantin

2006-04-12T23:59:59.000Z

442

Submerged electricity generation plane with marine current-driven motors  

DOE Patents [OSTI]

An underwater apparatus for generating electric power from ocean currents and deep water tides. A submersible platform including two or more power pods, each having a rotor with fixed-pitch blades, with drivetrains housed in pressure vessels that are connected by a transverse structure providing buoyancy, which can be a wing depressor, hydrofoil, truss, or faired tube. The platform is connected to anchors on the seafloor by forward mooring lines and a vertical mooring line that restricts the depth of the device in the water column. The platform operates using passive, rather than active, depth control. The wing depressor, along with rotor drag loads, ensures the platform seeks the desired operational current velocity. The rotors are directly coupled to a hydraulic pump that drives at least one constant-speed hydraulic-motor generator set and enables hydraulic braking. A fluidic bearing decouples non-torque rotor loads to the main shaft driving the hydraulic pumps.

Dehlsen, James G.P.; Dehlsen, James B.; Fleming, Alexander

2014-07-01T23:59:59.000Z

443

Symmetric Galerkin boundary integral fracture analysis for plane orthotropic elasticity  

Science Journals Connector (OSTI)

This paper discusses the formulation and implementation of the symmetric Galerkin boundary integral method for two dimensional linear elastic orthotropic fracture analysis. For the usual case of a traction-free crack, the symmetry of the coefficient ...

L. J. Gray; G. H. Paulino

1997-07-01T23:59:59.000Z

444

Turtle Escapes the Plane: Some Advanced Turtle Geometry  

E-Print Network [OSTI]

Since the LOGO Turtle took his first step he has been mathematically confined to running around on flat surfaces. Fortunately the physically intuitive, procedurally oriented nature of the Turtle which makes him a ...

diSessa, Andy

1975-12-01T23:59:59.000Z

445

RANDOM POLYGONS DETERMINED BY RANDOM LINES IN A PLANE, II  

Science Journals Connector (OSTI)

...in the October 1964 issue of these PROCEEDINGS. 1 Bernier, G., H. Corte, and 0. Kallmes, "The structure of paper," Tappi, 43, 737-752 (1960); 44, 519-528 (1961); 45, 867-872 (1962); 46, 108-114 (1963); 46, 493-502 (1963...

R. E. Miles

1964-01-01T23:59:59.000Z

446

Cardinality Cuts: New Cutting Planes for 0-1 Programming  

E-Print Network [OSTI]

Abstract: We present new valid inequalities that work in similar ways to well known cover ... We work on the 0-1 integer programming problem given below: n.

Osman Oguz

2006-11-26T23:59:59.000Z

447

A Numerical Upscaling Procedure to Estimate Effective Plane Wave ...  

E-Print Network [OSTI]

Jan 12, 2008 ... saturation occur at gas-oil and gas-water contacts. By using computerized tomography scans (CT scans) it is possible to visualize the fluid...

german

448

A numerical upscaling procedure to estimate effective plane wave ...  

E-Print Network [OSTI]

Feb 15, 2009 ... uniform patchy saturation occur at gasoil and gaswater contacts. By using computerized tomography scans (CT scans) it is possible to.

"Juan E. Santos; J. Germ?n Rubino; Claudia L. Ravazzoli"

2009-04-16T23:59:59.000Z

449

Cross-plane thermal properties of transition metal dichalcogenides  

SciTech Connect (OSTI)

In this work, we explore the thermal properties of hexagonal transition metal dichalcogenide compounds with different average atomic masses but equivalent microstructures. Thermal conductivity values of sputtered thin films were compared to bulk crystals. The comparison revealed a >10 fold reduction in thin film thermal conductivity. Structural analysis of the films revealed a turbostratic structure with domain sizes on the order of 5-10 nm. Estimates of phonon scattering lengths at domain boundaries based on computationally derived group velocities were consistent with the observed film microstructure, and accounted for the reduction in thermal conductivity compared to values for bulk crystals.

Muratore, C. [Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio 45469 (United States) [Department of Chemical and Materials Engineering, University of Dayton, Dayton, Ohio 45469 (United States); Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); Varshney, V. [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States) [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); Universal Technology Corporation, Dayton, Ohio 45432 (United States); Gengler, J. J. [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States) [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); Spectral Energies LLC, Dayton, Ohio 45431 (United States); Hu, J. J.; Bultman, J. E. [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States) [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); University of Dayton Research Institute, Dayton, Ohio 45469 (United States); Smith, T. M. [Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210 (United States)] [Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210 (United States); Shamberger, P. J.; Roy, A. K.; Voevodin, A. A. [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States)] [Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); Qiu, B.; Ruan, X. [Department of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907 (United States)] [Department of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907 (United States)

2013-02-25T23:59:59.000Z

450

A look at damped harmonic oscillators through the phase plane  

Science Journals Connector (OSTI)

......classes ranging from Elementary Algebra to Abstract...harmonic motion in an elementary ordinary differential...harmonic motion in an elementary ordinary differential...equation in which the electric charge q, the inductance...elastance) and the resistance R, replace x, m......

Yousef Daneshbod; Joe Latulippe

2011-06-01T23:59:59.000Z

451

A COMPUTATIONAL STUDY OF THE CUTTING PLANE TREE ...  

E-Print Network [OSTI]

Sep 14, 2010 ... All computations are done on a 3.2 GHz Sun workstation with 4 GB RAM, under 3600 .... An updated mixed integer linear programming library:.

2010-09-14T23:59:59.000Z

452

On Covering Points with Conics and Strips in the Plane  

E-Print Network [OSTI]

are replaced by affine hyperplanes bounded by dimension d. Line cover is NP-hard, so is its hyperplane analogue. Our thesis focuses on few extensions of hyperplane cover and line cover. One of the techniques used to study NP-hard problems is Fixed Parameter...

Tiwari, Praveen 1985-

2012-12-10T23:59:59.000Z

453

Elliptic Flow: Transition from Out-of-Plane to In-Plane Emission in Au + Au Collisions  

SciTech Connect (OSTI)

We have measured the proton elliptic flow excitation function for the Au+Au system spanning the beam energy range (2{endash}8)A GeV . The excitation function shows a transition from negative to positive elliptic flow at a beam energy, E{sub tr}{approximately}4A GeV . Detailed comparisons with calculations from a relativistic Boltzmann equation are presented. The comparisons suggest a softening of the nuclear equation of state from a stiff form (K{approximately}380 MeV ) at low beam energies (E{sub beam}{le}2A GeV ) to a softer form (K{approximately}210 MeV ) at higher energies (E{sub beam}{ge}4A GeV ) where the calculated baryon density {rho}{approximately}4{rho}{sub 0} . {copyright} {ital 1999} {ital The American Physical Society}

Pinkenburg, C.; Ajitanand, N.N.; Alexander, J.M.; Chung, P.; Elmaani, A.; Gilkes, M.L.; Gushue, S.; Lacey, R.A.; Lauret, J.; Law, C.; McGrath, R. [Departments of Chemistry and Physics, State University of New York, Stony Brook, New York 11794 (United States)] [Departments of Chemistry and Physics, State University of New York, Stony Brook, New York 11794 (United States); Best, D.; Case, T.; Crowe, K.; Odyniec, G.; Olson, D.L.; Rai, G.; Ritter, H.G.; Schroeder, L.; Stone, N.T.; Symons, T.J.; Wienold, T. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)] [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Das, A.C.; Lisa, M.A. [Ohio State University, Columbus, Ohio 43210 (United States)] [Ohio State University, Columbus, Ohio 43210 (United States); Justice, M.; Keane, D.; Liu, H.; Panitkin, S.Y.; Witt, R. [Kent State University, Kent, Ohio 44242 (United States)] [Kent State University, Kent, Ohio 44242 (United States); Anderson, M.; Brady, F.P.; Caskey, W.; Cebra, D.; Chance, J.L.; Draper, J.E.; Heffner, M.; Klay, J.; Romero, J.L.; Wood, L. [University of California, Davis, California 95616 (United States)] [University of California, Davis, California 95616 (United States); Danielewicz, P. [Michigan State University, East Lansing, Michigan 48824-1321 (United States)] [Michigan State University, East Lansing, Michigan 48824-1321 (United States); Hirsch, A.S.; Hjort, E.L.; Porile, N.T.; Scharenberg, R.; Srivastava, B. [Purdue University, West Lafayette, Indiana 47907-1396 (United States)] [Purdue University, West Lafayette, Indiana 47907-1396 (United States); Kaplan, M.; Milosevich, Z.; Whitfield, J. [Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)] [Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Gushue, S. [Brookhaven National Laboratory, Upton, New York 11973 (United States)] [Brookhaven National Laboratory, Upton, New York 11973 (United States); Gossiaux, P.B. [SUBATECH, Ecole des Mines, F-44070 Nantes (France)] [SUBATECH, Ecole des Mines, F-44070 Nantes (France); Krofcheck, D. [University of Auckland, Auckland (New Zealand)] [University of Auckland, Auckland (New Zealand); Cole, B. [Columbia University, New York, New York 10027 (United States)] [Columbia University, New York, New York 10027 (United States); Kintner, J.C. [St. Mary`s College, Moraga, California 94575 (United States)] [St. Mary`s College, Moraga, California 94575 (United States); Huo, L.; Liu, Y.M.; Zhang, W.N. [Harbin Institute of Technology, Harbin, 150001 People`s Republic of (China)] [Harbin Institute of Technology, Harbin, 150001 People`s Republic of (China)

1999-08-01T23:59:59.000Z

454

Transition from in-plane to out-of-plane azimuthal enhancement in Au+Au collisions  

E-Print Network [OSTI]

A 553 (1993) 739c. [46] P. Danielewicz and G. Odyniec, Phys.247 (1990) 233. [50] P. Danielewicz, discussion during INT-94-3, Seattle. [51] P. Danielewicz and Q. Pan, Phys. Rev. C

2000-01-01T23:59:59.000Z

455

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

456

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

457

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

458

Field application of an interpretation method of downhole temperature and pressure data for detecting water entry in horizontal/highly inclined gas wells  

E-Print Network [OSTI]

condition change, wellbore structure change, geothermal environment change, or simple just noise of measurement. To separate flow condition change from the other causes of temperature change, we require a comprehensive understanding of flow dynamics. 5.... The interpretation model for downhole temperature and pressure data is a coupled thermal wellbore/reservoir flow model. The model is built on fundamental flow and energy conservation equations for both the reservoir and wellbore. These equations are: Mass balance...

Achinivu, Ochi I.

2009-05-15T23:59:59.000Z

459

Study of Heat Transfer in Non-boiling Two-phase Gas-liquid Flow in Pipes for Horizontal, Slightly Inclined, and Vertical Orientations.  

E-Print Network [OSTI]

??The main objective of this research is to establish a fundamental understanding of heat transfer in non-boiling two-phase pipe flow. The key processes that govern (more)

Tang, Clement Chih-Wei

2011-01-01T23:59:59.000Z

460

AIMR (Azimuth and Inclination Modeling in Realtime): A Method for Prediction of Dog-Leg Severity based on Mechanical Specific Energy  

E-Print Network [OSTI]

Since the 1980s horizontal drilling has been a game-changing technology as it allowed the oil and gas industry to produce from reservoirs previously considered marginal or uneconomic. However, while it is considered a mature technology...

Noynaert, Samuel F

2013-08-13T23:59:59.000Z

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

Inclination shallowing in Eocene Linzizong sedimentary rocks from Southern Tibet: correction, possible causes and implications for reconstructing the IndiaAsia collision  

Science Journals Connector (OSTI)

......and thin-layered lime-mudstones and thick...from Unit T2, green diamond: this research...level is 92 m. (f) Green laminated mudstone...feldspar and opaque minerals. (l) Sedimentary...organic-bearing green mudstones, which...slightly altered to clay minerals and calcite. The......

Wentao Huang; Guillaume Dupont-Nivet; Peter C. Lippert; Douwe J. J. van Hinsbergen; Erwan Hallot

2013-01-01T23:59:59.000Z

462

Dynamical modelling of stars and gas in NGC 2974: determination of mass-to-light ratio, inclination and orbital structure using the Schwarzschild method  

Science Journals Connector (OSTI)

......deviations from mirror-antisymmetry...are based on the Schwarzschild orbit-superposition...tests with the Schwarzschild code suggested...symmetrization uses the mirror-(anti)symmetry...coming from the Schwarzschild modelling is consistent...symmetry and mirror-(anti)symmetry......

Davor Krajnovic; Michele Cappellari; Eric Emsellem; Richard M. McDermid; P. Tim De Zeeuw

2005-03-11T23:59:59.000Z

463

Palaeomagnetism and magnetic anisotropy of Carboniferous red beds from the Maritime Provinces of Canada: evidence for shallow palaeomagnetic inclinations and implications for North American apparent polar wander  

Science Journals Connector (OSTI)

......Hacquebard P.A. , 1970. Coal in Southeastern Canada, Geol. Survey of Canada, Economic Geology Report 1. Hacquebard...1969. Carboniferous Coal Deposition Associated...northern New Brunswick: coal-bearing deposits of...region, in Geology and Economic Minerals of Canada......

Dario Bilardello; Kenneth P. Kodama

2010-03-01T23:59:59.000Z

464

Cradle and pressure grippers  

DOE Patents [OSTI]

A gripper that is designed to incorporate the functions of gripping, supporting and pressure tongs into one device. The gripper has two opposing finger sections with interlocking fingers that incline and taper to form a wedge. The interlocking fingers are vertically off-set so that the opposing finger sections may close together allowing the inclined, tapered tips of the fingers to extend beyond the plane defined by the opposing finger section's engagement surface. The range of motion defined by the interlocking relationship of the finger sections allows the gripper to grab, lift and support objects of varying size and shape. The gripper has one stationary and one moveable finger section. Power is provided to the moveable finger section by an actuating device enabling the gripper to close around an object to be lifted. A lifting bail is attached to the gripper and is supported by a crane that provides vertical lift.

Muniak, John E. (New York, NY)

2001-01-01T23:59:59.000Z

465

Valve  

DOE Patents [OSTI]

A positive acting valve suitable for operation in a corrosive environment is provided. The valve includes a hollow valve body defining an open-ended bore for receiving two, axially aligned, spaced-apart, cylindrical inserts. One insert, designated the seat insert, terminates inside the valve body in an annular face which lies within plane normal to the axis of the two inserts. An elastomeric O-ring seal is disposed in a groove extending about the annular face. The other insert, designated the wedge insert, terminates inside the valve body in at least two surfaces oppositely inclined with respect to each other and with respect to a plane normal to the axis of the two inserts. An elongated reciprocable gate, movable between the two inserts along a path normal to the axis of the two inserts, has a first flat face portion disposed adjacent and parallel to the annular face of the seat insert. The gate has a second face portion opposite to the first face portion provided with at least two oppositely inclined surfaces for mating with respective inclined surfaces of the wedge insert. An opening is provided through the gate which registers with a flow passage through the two inserts when the valve is open. Interaction of the respective inclined surfaces of the gate and wedge insert act to force the first flat face portion of the gate against the O-ring seal in the seat insert at the limits of gate displacement where it reaches its respective fully open and fully closed positions.

Cho, Nakwon (Knoxville, TN)

1980-01-01T23:59:59.000Z

466

Turbulent structures and budgets behind permeable ribs  

SciTech Connect (OSTI)

Different rib geometries are traditionally used to improve heat transfer and enhance mixing in different industrial applications, i.e. heat exchangers, cooling passages of gas turbine blades and fuel elements of nuclear reactors, etc. Permeable ribs have been proposed in literature for passive control of the reattaching flow past surface mounted ribs leading to superior performance. The flow past different surface mounted permeable rib geometries, i.e. solid, slit, split-slit and inclined split-slit ribs have been investigated in this study. Both two components and stereo particle image velocimetry (PIV) have been used in streamwise and cross stream planes to study the underlying flow structures. The detailed turbulent statistics, i.e. mean and rms velocity, higher order moments, quadrant decomposition of turbulent shear stress producing motions, skewness and components of the turbulent kinetic energy budgets have been compared for different rib geometries. Coherent structures are identified based on the invariant of velocity gradient tensor invariant and wavelet transform. The skewness results demonstrate the intermittency of quadrant motions. The reattachment length of the inclined split-slit rib is lowest among all rib geometries. The average Reynolds stresses and the production of turbulent kinetic energy are highest for the inclined split-slit rib. The pressure transport calculated as residual of the turbulent kinetic energy budget equation is highest for the inclined split-slit rib. This is attributed to the smaller reattachment length leading to greater adverse pressure gradient for the inclined split-slit rib. The quadrant motions, turbulent fluxes, skewness and kinetic energy budgets at post reattachment region compares well with that of flat plate turbulent boundary layer from hot wire measurements in literature. Overall, this study demonstrates the effectiveness of PIV technique for the detailed turbulent structures characterization of complex flows. (author)

Panigrahi, P.K. [Department of Mechanical Engineering, IIT Kanpur, UP 208016 (India); Schroeder, A.; Kompenhans, J. [Institute of Aerodynamics and Flow Technology, German Aerospace Center (DLR), Goettingen (Germany)

2008-02-15T23:59:59.000Z

467

Magnetic Levitation System The following figure shows the cross section of a magnetic levitation (MAGLEV) train.  

E-Print Network [OSTI]

Magnetic Levitation System The following figure shows the cross section of a magnetic levitation in matched pairs. The magnetic attraction of the vertically paired magnets balances the force of gravity and levitates the vehicle above the guideway. d h z Train Track Magnets Fixed Reference Line Magnets

Hagan, Martin

468

Viability of Modern Automated Rapid Transit Applications  

E-Print Network [OSTI]

guideway: elevated, underground, at grade · Fully automated: electric-powered, electronic controls · Non · Headways/frequency: about 30 seconds/120 veh/hr · Small vehicles: 4-6 passengers, low weight · Eco: 4 km, 21 vehicles, two stations (parking and terminal) · Open to public service Spring 2011, 22

Minnesota, University of

469

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

470

Terahertz Vibration?Rotation?Tunneling Spectroscopy of the Ammonia Dimer. II. A?E States of an Out-of-Plane Vibration and an In-Plane Vibration  

Science Journals Connector (OSTI)

Terahertz Vibration?Rotation?Tunneling Spectroscopy of the Ammonia Dimer. ... In order to proceed toward the ultimate goal of determining an accurate intermolecular potential surface like what has been done for the water dimer, it is necessary to thoroughly characterize the intermolecular vibrations. ... The ab initio harmonic vibrational frequencies are known to be often too high for the weakly bound systems. ...

Wei Lin; Jia-xiang Han; Lynelle K. Takahashi; Jennifer G. Loeser; Richard J. Saykally

2007-09-07T23:59:59.000Z

471

Multiple wavelength X-ray monochromators  

DOE Patents [OSTI]

An improved 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 first 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 focusing the separate first and second output x-ray radiation wavelengths into separate focal points. 3 figs.

Steinmeyer, P.A.

1992-11-17T23:59:59.000Z

472

Vibration-Induced Climbing of Drops  

Science Journals Connector (OSTI)

We report an experimental study of liquid drops moving against gravity, when placed on a vertically vibrating inclined plate, which is partially wetted by the drop. The frequency of vibrations ranges from 30 to 200Hz, and, above a threshold in vibration acceleration, drops experience an upward motion. We attribute this surprising motion to the deformations of the drop, as a consequence of an up or down symmetry breaking induced by the presence of the substrate. We relate the direction of motion to contact angle measurements. This phenomenon can be used to move a drop along an arbitrary path in a plane, without special surface treatments or localized forcing.

P. Brunet; J. Eggers; R. D. Deegan

2007-10-03T23:59:59.000Z

473

Solar collector  

SciTech Connect (OSTI)

The disclosure is a solar collector consisting of glass rods enclosed in a housing and mounted vertically on a roof or other elevated place to gather solar rays. The collector is fixed, with no tracking device or other moving parts. The glass rods are 6 mm or smaller in diameter, and there can be several thousand, depending on the sizes of the rods and collector. The upper ends of the rods are inclined at an angle of thirty degrees from horizontal, with the inclined surfaces occupying a plane which faces south so as to obtain maximum exposure to the winter sun. Solar rays striking the inclined ends of the rods are refracted into the rods. The rays travel down through the rods, with a predominantly parallel path of propagation being established by repeated reflections off the inside walls of the rods. The rays are emitted from the lower perpendicular ends of the rods as parallel rays of incoherent light which are directed into beam concentrators.

Clegg, J.E.

1985-01-08T23:59:59.000Z

474

Pump-probe measurements of the thermal conductivity tensor for materials lacking in-plane symmetry  

E-Print Network [OSTI]

1 Pump-probe measurements of the thermal conductivity tensor for materials lacking in conductivity corresponding to the scanning direction. Also, we demonstrate Nb- V as a low thermal conductivity thermal conductivity tensor and the illuminating spots have arbitrary intensity profiles

Cahill, David G.

475

On Waves Propagated along the Plane Surface of an Elastic Solid  

Science Journals Connector (OSTI)

......solid Strutt John Williams Author Lord Rayleigh 243 250 Classics of elastic wave theory Pelissier Michael A. editor Marathon Oil Company Houston, TX United States Hoeber Henning editor van de Coevering Norbert editor Jones Ian F. editor CGGVeritas......

Lord Rayleigh

1885-11-01T23:59:59.000Z

476

On the complexity of cutting plane proofs using split cuts Sanjeeb ...  

E-Print Network [OSTI]

Jun 16, 2008 ... A e start off by proving the properties (A) and ( U ) given in Section 2 for ..... [o ] S. A. Cook and A. ? aken, An exponential lower bound for the...

2008-06-16T23:59:59.000Z

477

Particle dispersion within zonal jets in two-layer beta-plane turbulence  

E-Print Network [OSTI]

. were a, passive tracer. In eitlier case, liigh p. v. air from inside the polar vortex ivas ejected into lower latitudes, and thc vort&ix was eroded. Polvani and Plumb (1992) further classifie ivave-breaking using the Contour Dynamics method on a... decreases), a, parameter ivas needed that. allowed for relative comparisons of timescales in the two simulations. Thus, an Eulerian timescale was developed by examining thc cd&ly kinetic energies of the two cases. The eddy kinetic energy of a flow...

Roman, Jennifer Claire

1996-01-01T23:59:59.000Z

478

Points, lines and diamonds: a two-sorted modal logic for projective planes  

Science Journals Connector (OSTI)

......P1) each pair of distinct points is connected by exactly one...lines intersects in exactly one point, (P3) there are at least four points such that no three of them are...obviously, here one could lift the restriction that and ' be......

Y Venema

1999-10-01T23:59:59.000Z

479

A three-arm current comparator bridge, for impedance comparisons over the complex plane  

E-Print Network [OSTI]

We present here the concept of three-arm current comparator impedance bridge, which allows comparisons among three unlike impedances. Its purpose is the calibration of impedances having arbitrary phase angles, against calibrated nearly-pure impedances. An analysis of the bridge optimal setting and proper operation is presented. To test the concept, a two terminal-pair digitally-assisted bridge has been realized; measurements of an air-core inductor and of an RC network versus decade resistance and capacitance standards, at kHz frequency, have been performed. The bridge measurements are compatible with previous knowledge of the standards' values with relative deviations in the 10^-5 -- 10^-6 range.

Callegaro, Luca; Ortolano, Massimo; Pourdanesh, Faranak

2014-01-01T23:59:59.000Z

480

Trains, Planes, and Automobiles Panagiotis Tsiotras, Eric Feron, and Marilyn Wolf  

E-Print Network [OSTI]

trends in avionics/automotive electronics platform architecture development. Recognizing think automotive designers can learn from aircraft designers, with a short note on the converse. We these similarities, traditionally, the automotive industry has followed the steps of aircraft industry when it comes

Rajkumar, Ragunathan "Raj"

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.


481

An investigation of symmetry in upper extremity strength during sagittal plane lifting tasks  

E-Print Network [OSTI]

438. 76 461. 61 S. D. 26. 73 29. 60 18. 40 25. 03 103. 42 86. 07 Note: Data collected at a rate of 50 Hz. 52 APPENDIX I LIFTING TESTS DATA 53 LIFTING TESTS DATA (N) STOOP LIFT Left Ri ht SQUAT LIFT Left Ri ht Sub'ect Trial Av . S. D. Av . S.... D. Av . S. D. Av . S. D 2 137. 89 1. 97 118. 05 5. 30 162. 09 7. 77 148. 83 10. 75 3 113. 11 5. 56 97. 01 5. 14 120. 05 3. 83 130. 33 3. 72 4 143. 98 11. 16 134. 55 5. 78 119. 56 5. 77 129. 57 4. 50 2 134. 06 13. 08 88. 69 10. 18 135. 31 9. 04...

Key, Wendy Ross

2012-06-07T23:59:59.000Z

482

Model generation of coronary artery bifurcations from CTA and single plane angiography  

SciTech Connect (OSTI)

Purpose: To generate accurate and realistic models of coronary artery bifurcations before and after percutaneous coronary intervention (PCI), using information from two image modalities. Because bifurcations are regions where atherosclerotic plaque appears frequently and intervention is more challenging, generation of such realistic models could be of high value to predict the risk of restenosis or thrombosis after stent implantation, and to study geometrical and hemodynamical changes. Methods: Two image modalities have been employed to generate the bifurcation models: computer tomography angiography (CTA) to obtain the 3D trajectory of vessels, and 2D conventional coronary angiography (CCA) to obtain radius information of the vessel lumen, due to its better contrast and image resolution. In addition, CCA can be acquired right before and after the intervention in the operation room; therefore, the combination of CTA and CCA allows the generation of realistic preprocedure and postprocedure models of coronary bifurcations. The method proposed is semiautomatic, based on landmarks manually placed on both image modalities. Results: A comparative study of the models obtained with the proposed method with models manually obtained using only CTA, shows more reliable results when both modalities are used together. The authors show that using preprocedure CTA and postprocedure CCA, realistic postprocedure models can be obtained. Analysis carried out of the Murray's law in all patient bifurcations shows the geometric improvement of PCI in our models, better than using manual models from CTA alone. An experiment using a cardiac phantom also shows the feasibility of the proposed method. Conclusions: The authors have shown that fusion of CTA and CCA is feasible for realistic generation of coronary bifurcation models before and after PCI. The method proposed is efficient, and relies on minimal user interaction, and therefore is of high value to study geometric and hemodynamic changes of treated patients.

Cardenes, Ruben; Diez, Jose L.; Duchateau, Nicolas; Pashaei, Ali; Frangi, Alejandro F. [Center for Computational Imaging and Simulation Technologies in Biomedicine (CISTIB)-Universitat Pompeu Fabra and Networking Biomedical Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona 08018 (Spain); Cardiology Department, University Hospital Dr. Peset, Valencia 46017 (Spain); Hospital Clinic Provincial de Barcelona, Institut d'investigacions Biomediques August Pi i Sunyer-Universitat de Barcelona, Barcelona 08036 (Spain); Center for Computational Imaging and Simulation Technologies in Biomedicine (CISTIB)-Universitat Pompeu Fabra and Networking Biomedical Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona 08018 (Spain); Center for Computational Imaging and Simulation Technologies in Biomedicine (CISTIB)-Universitat Pompeu Fabra and Networking Biomedical Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona 08018, Spain and Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD (United Kingdom)

2013-01-15T23:59:59.000Z

483

Heat transfer and hydraulic resistance in a short plane-parallel duct with artificially roughened walls  

Science Journals Connector (OSTI)

Experimental heat transfer and hydraulic resistance data are correlated by means of dimensionless relationships.

V. G. Pavlovskii; Yu. M. Dedusenko

1969-12-01T23:59:59.000Z

484

Formation of mesoscale roughening in 6022-T4 Al sheets deformed in plane-strain tension  

Science Journals Connector (OSTI)

Mesoscale surface-roughening evolution in 6022-T4 Al sheets was ... are central to the formation of mesoscale surface roughening.

Y. S. Choi; H. R. Piehler; A. D. Rollett

2004-02-01T23:59:59.000Z

485

Scattering of plane evanescent waves by buried cylinders: Modeling the coupling to guided waves and resonances  

Science Journals Connector (OSTI)

The coupling of sound to buried targets can be associated with acoustic evanescent waves when the sea bottom is smooth. To understand the excitation of guided waves on buried fluid cylinders and shells by acoustic evanescent waves and the associated target resonances the two?dimensional partial wave series for the scattering is found for normal incidence in an unbounded medium. The shell formulation uses the simplifications of thin?shell dynamics. The expansion of the incident wave becomes a double summation with products of modified and ordinary Bessel functions [P. L. Marston J. Acoust. Soc. Am. 111 2378 (2002)]. Unlike the case of an ordinary incident wave the counterpropagating partial waves of the same angular order have unequal magnitudes when the incident wave is evanescent. This is a consequence of the exponential dependence of the incident wave amplitude on depth. Some consequences of this imbalance of partial?wave amplitudes are given by modifying previous ray theory for the scattering [P. L. Marston and N. H. Sun J. Acoust. Soc. Am. 97 777783 (1995)]. The exponential dependence of the scattering on the location of a scatterer was previously demonstrated in air [T. J. Matula and P. L. Marston J. Acoust. Soc. Am. 93 11921195 (1993)].

2003-01-01T23:59:59.000Z

486

Plane wave stability of the split-step Fourier method for the nonlinear Schrodinger equation  

E-Print Network [OSTI]

of linear stability and a non-resonance condition. They can both be verified if the time step Bretagne, Avenue Robert Schumann, F-35170 Bruz, France (Erwan.Faou@inria.fr). 2D´epartement de math

Faou, Erwan

487

Sobolev stability of plane wave solutions to the cubic nonlinear Schrodinger equation on a torus  

E-Print Network [OSTI]

Robert Schumann, F-35170 Bruz, France (Erwan.Faou@inria.fr). D´epartement de math´ematiques et of the periodic cubic NLS (1.1) by the addition of a convolution term V u, which eliminates the resonance of the frequencies of the linearization of (1.1) around 0. Such a resonance-removing modification by a convolution

Paris-Sud XI, Université de

488

Sobolev stability of plane wave solutions to the cubic nonlinear Schrodinger equation on a torus  

E-Print Network [OSTI]

Robert Schumann, F-35170 Bruz, France (Erwan.Faou@inria.fr). D´epartement de math´ematiques et eliminates the resonance of the frequencies of the linearization of (1.1) around 0. Such a resonance by Eliasson & Kuksin [17]. In this non-resonant case, Hs -stability of small solutions can be proven

Tübingen, Universität

489

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

490

Cross-plane Seebeck coefficient in superlattice structures in the miniband conduction regime  

E-Print Network [OSTI]

?2006? FIG. 6. Electrical conductivity vs Fermi energy ?left?left? and electrical conductiv- ity ?right? vs dopingdk x dk y FIG. 4. Electrical conductivity ?right? vs doping

Vashaee, D; Zhang, Y; Shakouri, A; Zeng, G H; Chiu, Y J

2006-01-01T23:59:59.000Z

491

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

E-Print Network [OSTI]

was conducted. The window film (WF) series included 5x5damage states. When the window film is attached using theThe safety aspects of window film were very evident during

Eva, Charles Almond

2009-01-01T23:59:59.000Z

492

Convective heat transfer in the nonstationary motion of a Maxwellian fluid between parallel planes  

Science Journals Connector (OSTI)

The convective heat-transfer problem is investigated for a Maxwellian fluid in generalized Couette flow in the case...

Z. P. Shul'man; . A. Zal'tsgendler

1970-06-01T23:59:59.000Z

493

Orbital-free density functional theory of out-of-plane charge screening in graphene  

E-Print Network [OSTI]

We propose a density functional theory of Thomas-Fermi-Dirac-von Weizs\\"acker type to describe the response of a single layer of graphene resting on a dielectric substrate to a point charge or a collection of point charges some distance away from the layer. We formulate a variational setting in which the proposed energy functional admits minimizers, both in the case of free graphene layers and under back-gating. We further provide conditions under which those minimizers are unique and correspond to configurations consisting of inhomogeneous density profiles of charge carrier of only one type. The associated Euler-Lagrange equation for the charge density is also obtained, and uniqueness, regularity and decay of the minimizers are proved under general conditions. In addition, a bifurcation from zero to non-zero response at a finite threshold value of the external charge is proved.

Jianfeng Lu; Vitaly Moroz; Cyrill B. Muratov

2014-05-20T23:59:59.000Z

494

An in-plane, variable optical attenuator using a fluid-based tunable reflective interface  

E-Print Network [OSTI]

R , can be tuned by controlling the concen- tration of solutes, such as calcium chloride CaCl2 a refrac- tive index approximately n1=1.333 and the other syringe was filled with a 3.5M solution of CaCl2

495

A Log-Periodic Focal-Plane Architecture for Cosmic Microwave Background Polarimetry  

E-Print Network [OSTI]

and etched the ?lms with a CF4 plasma ( Hamilton [2010]).We mixed the CF4 with trace amounts of O2 to wear away the

OBrient, Roger

2010-01-01T23:59:59.000Z

496

Formation of capillary structures with highly viscous fluids in plane microchannels  

E-Print Network [OSTI]

during oil transport in pipelines with the buildup of wax on walls4 ­ or advantageous, such as during in volcanic conduits,9 oil transport in pipelines,10 as well as the microflow of viscoelastic fluids.11

Cubaud, Thomas

497

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

Science Journals Connector (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

498

Models of the circumstellar medium of evolving, massive runaway stars moving through the Galactic plane  

Science Journals Connector (OSTI)

......those of high-mass stars (Mo) with small space velocity (km1). With...governed by their wind momentum and they...produced by high-mass (Mo) stars with small space velocity (km1). The hereby...APPENDIX A: EMISSION MAPS AND PROJECTED DUST......

D. M.-A. Meyer; J. Mackey; N. Langer; V. V. Gvaramadze; A. Mignone; R. G. Izzard; L. Kaper

2014-01-01T23:59:59.000Z

499

E-Print Network 3.0 - actividades preventivas planes Sample Search...  

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

DE LA MEMRIA VERIFICADA DEL TTOL DE GRADUATDA EN ENGINYERIA D'AERONAVEGACI Summary: ISO 9001:1994 aplicada al Diseo del Programa de Formacin, Organizacin y Desarrollo...

500

Global buckling of pipelines in the vertical plane with a soft seabed  

Science Journals Connector (OSTI)

Offshore pipelines are usually buried to avoid damage from fishing activities and to provide thermal insulation. Provided that the buried pipelines are sufficiently confined in the lateral direction by the passive resistance of the trench walls, they may be subject to vertical buckling caused by a rise in temperature. Vertical buckling is usually called upheaval buckling because the heated pipeline is assumed to move upwards conventionally. However, the seabed may be very soft, especially where a pockmark or abyssal ooze appears. Consequently, under thermal compressive force, the pipeline may buckle downward and penetrate into the seabed because the downward soil resistance is small. In this study, we extended an analytical solution for vertical pipeline buckling on a rigid seabed to a soft seabed, and the effects of soil resistance on pipeline stability, buckling mode and amplitude are illustrated and analyzed.

Lizhong Wang; Ruowei Shi; Feng Yuan; Zhen Guo; Luqing Yu

2011-01-01T23:59:59.000Z