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


1

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

E-Print Network (OSTI)

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

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

2004-11-26T23:59:59.000Z

2

Focal plane  

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

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

3

Narrow-band optical transmission of metallic nanoslit arrays  

Science Conference Proceedings (OSTI)

Metallic nanoslit arrays usually demonstrate wide transmission bands for transverse-magnetic-polarized incidence light. Here, we show that by introducing multi-dielectric layers underneath the metallic structure layer on the substrate, a narrow peak is formed, whose bandwidth can be down to a few nanometers. Three types of resonance modes in the region under the metal layer are identified responsible for the formation of the peak, i.e., a two-dimensional cavity resonance mode, which supports optical transmission, and two in-plane hybrid surface plasmon resonance modes locating on both sides of the peak that suppresses the transmission. Such structures can be applied in advanced photonic devices.

Sun Zhijun; Yang Ying; Zuo Xiaoliu [Department of Physics, Xiamen University, Xiamen 361005 (China)

2012-10-22T23:59:59.000Z

4

A RANDOMIZED CUTTING PLANE METHOD WITH ...  

E-Print Network (OSTI)

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

5

Ventilating Beta Plane Leases  

Science Conference Proceedings (OSTI)

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

William K. Dewar

1988-08-01T23:59:59.000Z

6

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

Science Conference Proceedings (OSTI)

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

Ch. Schaupp; R. Friedrich

2010-12-01T23:59:59.000Z

7

Why Is the Deep Sinking Narrow?  

Science Conference Proceedings (OSTI)

Narrowness of downwelling and broadness of upwelling are ubiquitous features of numerical and laboratory simulations of oceanic thermal overturning and are evidenced by the global ocean distributions of tracers, heat, and salt. By varying the ...

Michael Winton

1995-05-01T23:59:59.000Z

8

Fourier plane image amplifier  

DOE Patents (OSTI)

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

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

1995-12-12T23:59:59.000Z

9

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

Science Conference Proceedings (OSTI)

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

John P. Boyd

1985-09-01T23:59:59.000Z

10

Tangencies between families of disjoint regions in the plane  

Science Conference Proceedings (OSTI)

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

Jnos Pach; Andrew Suk; Miroslav Treml

2012-04-01T23:59:59.000Z

11

Narrow field electromagnetic sensor system and method  

DOE Patents (OSTI)

A narrow field electromagnetic sensor system and method of sensing a characteristic of an object provide the capability to realize a characteristic of an object such as density, thickness, or presence, for any desired coordinate position on the object. One application is imaging. The sensor can also be used as an obstruction detector or an electronic trip wire with a narrow field without the disadvantages of impaired performance when exposed to dirt, snow, rain, or sunlight. The sensor employs a transmitter for transmitting a sequence of electromagnetic signals in response to a transmit timing signal, a receiver for sampling only the initial direct RF path of the electromagnetic signal while excluding all other electromagnetic signals in response to a receive timing signal, and a signal processor for processing the sampled direct RF path electromagnetic signal and providing an indication of the characteristic of an object. Usually, the electromagnetic signal is a short RF burst and the obstruction must provide a substantially complete eclipse of the direct RF path. By employing time-of-flight techniques, a timing circuit controls the receiver to sample only the initial direct RF path of the electromagnetic signal while not sampling indirect path electromagnetic signals. The sensor system also incorporates circuitry for ultra-wideband spread spectrum operation that reduces interference to and from other RF services while allowing co-location of multiple electronic sensors without the need for frequency assignments. 12 figs.

McEwan, T.E.

1996-11-19T23:59:59.000Z

12

Interaction of Ocean Tides through a Narrow Single Strait and Narrow Multiple Straits  

Science Conference Proceedings (OSTI)

The tidal interaction between two constant depth oceans joined by a rectangular strait of length d, width 2a and constant depth h was analyzed. The strait is narrow in the sense that the scale of the ocean tide in the absence of the strait is ...

Conrado A. Rocha C.Allan J. Clarke

1987-12-01T23:59:59.000Z

13

Simulation of an Electrostatic Energy Harvester at Large Amplitude Narrow and Wide Band Vibrations  

E-Print Network (OSTI)

An electrostatic in-plane overlap varying energy harvester is modeled and simulated using a circuit simulator. Both linear and nonlinear models are investigated. The nonlinear model includes mechanical stoppers at the displacement extremes. Large amplitude excitation signals, both narrow and wide band, are used to emulate environmental vibrations. Nonlinear behavior is significant at large displacement due to the impact on mechanical stoppers. For a sinusoidal excitation the mechanical stoppers cause the output power to flatten and weakly decrease. For a wide band excitation, the output power first increases linearly with the power spectral density of the input signal, then grows slower than linearly.

Tvedt, Lars Geir Whist; Halvorsen, Einar

2008-01-01T23:59:59.000Z

14

On the Beta Plane Approximation  

Science Conference Proceedings (OSTI)

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

W. T. M. Verkley

1990-10-01T23:59:59.000Z

15

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

16

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

17

Tunable pulsed narrow bandwidth light source  

DOE Patents (OSTI)

A tunable pulsed narrow bandwidth light source and a method of operating a light source are provided. The light source includes a pump laser, first and second non-linear optical crystals, a tunable filter, and light pulse directing optics. The method includes the steps of operating the pump laser to generate a pulsed pump beam characterized by a nanosecond pulse duration and arranging the light pulse directing optics so as to (i) split the pulsed pump beam into primary and secondary pump beams; (ii) direct the primary pump beam through an input face of the first non-linear optical crystal such that a primary output beam exits from an output face of the first non-linear optical crystal; (iii) direct the primary output beam through the tunable filter to generate a sculpted seed beam; and direct the sculpted seed beam and the secondary pump beam through an input face of the second non-linear optical crystal such that a secondary output beam characterized by at least one spectral bandwidth on the order of about 0.1 cm.sup.-1 and below exits from an output face of the second non-linear optical crystal.

Powers, Peter E. (Dayton, OH); Kulp, Thomas J. (Livermore, CA)

2002-01-01T23:59:59.000Z

18

Price difference between Brent and WTI crude oil narrowing - Today ...  

U.S. Energy Information Administration (EIA)

The Brent-WTI spread, the difference between the prices of Brent and West Texas Intermediate (WTI) crude oils, has narrowed considerably over the past several months.

19

The UKIDSS Galactic Plane Survey  

E-Print Network (OSTI)

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

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

2007-12-01T23:59:59.000Z

20

Directional Reactive Power Ground Plane Transmission  

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

Note: This page contains sample records for the topic "narrow body planes" 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

Focal Plane Instrumentation of VERITAS  

E-Print Network (OSTI)

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

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

2007-09-28T23:59:59.000Z

22

Body Composition.  

E-Print Network (OSTI)

??Kelley Evanss dissertation consists of a collection of personal essays, which foreground the experience of the body. In four sections Sensation, Chaos/Control, Movement, Inward/Outward she (more)

Evans, Kelley E.

2008-01-01T23:59:59.000Z

23

PERCOLATION ON THE PROJECTIVE PLANE  

E-Print Network (OSTI)

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

Michael H. Freedman

1997-01-01T23:59:59.000Z

24

Morning Transition Tracer Experiments in a Deep Narrow Valley  

Science Conference Proceedings (OSTI)

Three sulfur hexafluoride atmospheric tracer experiments were conducted during the post-sunrise temperature inversion breakup period in the deep, narrow Brush Creek Valley of Colorado. Experiments were conducted under clear, undisturbed weather ...

C. David Whiteman

1989-07-01T23:59:59.000Z

25

A Narrow Clear Zone Over Florida and the Atlantic Ocean  

Science Conference Proceedings (OSTI)

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

Andrew J. Negri; K. Robert Morris

1980-04-01T23:59:59.000Z

26

The Organization of Convection in Narrow Cold-Frontal Rainbands  

Science Conference Proceedings (OSTI)

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

G. W. Kent Moore

1985-09-01T23:59:59.000Z

27

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

28

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

Science Conference Proceedings (OSTI)

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

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

2012-12-01T23:59:59.000Z

29

Using Narrow and Wide Field of View Instruments to Evaluate Longwave Parameterizations for Fair Weather Cumulus Cloud Fields  

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

Using Narrow and Wide Field of View Instruments to Using Narrow and Wide Field of View Instruments to Evaluate Longwave Parameterizations for Fair Weather Cumulus Cloud Fields E. E. Takara and R. G. Ellingson Department of Meteorology Florida State University Tallahassee, Florida Introduction Full blown three-dimensional (3D) radiation calculations for broken cloud fields consume too much time and computing resources to be included in climate models. The 3D effects can be approximated by effective cloud fractions which reduce the three-dimensional calculation to an average of plane parallel solutions - a much easier problem. For broken cloud conditions, the longwave flux (F) can be written as the weighted average of clear and overcast fluxes: overcast e clear e F N )F N 1 ( F (1) F clear is the clear-sky flux; the flux that would occur if the broken cloud field was removed. F

30

Body fat  

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

Body fat Body fat Name: Vincent Peri Status: N/A Age: N/A Location: N/A Country: N/A Date: N/A Question: What is fat? How does it accumulate in your body? Replies: Fat that is seen is a result of the multiplication and swelling of fat cells under the skin. The cells accumulate fat when times are good. In other words, when your caloric intake is greater than your caloric output, there is a tendency to accumulate fat. Fat is produced by using glucose ( a type of sugar) as the precursor molecule to create the building blocks for the creation of fat, a polymer known class known as lipid. Fat that is ingested must first be broken down before it is converted into fat in the body. Thus, it takes more energy to synthesize fat from fat than it does from simple carbohydrates. People who calorie count need to watch the amount of fat in foods because fat contains more calories per dry weight than protein or carbohydrates. Since fat does not include water and plants and vegetables are mostly water, a small amount of fat will have the same amount of calories as heaping portions of some vegetables. I hope I was clear. Oh yeah, there are many different kinds of lipids (including cholesterol) that are not the same as the the lipids that comprise the majority of fat deposits. This is only the tip of the ice berg and my description is purposely incomplete. Hope it helps.

31

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

32

Capacity of shrinking condensers in the plane  

E-Print Network (OSTI)

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

Arcozzi, N

2011-01-01T23:59:59.000Z

33

On the Decay of Tropical Cyclone Winds Crossing Narrow Landmasses  

Science Conference Proceedings (OSTI)

A method is developed to adjust the Kaplan and DeMaria tropical cyclone inland wind decay model for storms that move over narrow landmasses. The basic assumption that the wind speed decay rate after landfall is proportional to the wind speed is ...

Mark DeMaria; John A. Knaff; John Kaplan

2006-03-01T23:59:59.000Z

34

HTTP: An Evolvable Narrow Waist for the Future Internet  

E-Print Network (OSTI)

personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission. HTTP: An Evolvable Narrow Waist for the Future Internet

Lucian Popa; Patrick Wendell; Ali Ghodsi; Ion Stoica

2012-01-01T23:59:59.000Z

35

Narrow focus ultra-wideband antenna for breast cancer detection  

Science Conference Proceedings (OSTI)

A narrow focus ultra-wideband dielectric-filled antenna has been designed for the purpose of near-field breast cancer detection without the use of coupling media. Instead of immersing the antenna in a lossy liquid coupling medium, direct matching of ... Keywords: antenna feeds, antennas, breast cancer detection, directional, radar-based imaging, ultra-wide band

Daniel M. Hailu; Safieddin Safavi-Naeini

2009-01-01T23:59:59.000Z

36

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

Science Conference Proceedings (OSTI)

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

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

2012-11-01T23:59:59.000Z

37

Inertial Recirculation in a ?-Plane Corner  

Science Conference Proceedings (OSTI)

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

G. R. Ierley; W. R. Young

1988-04-01T23:59:59.000Z

38

Rossby Wave Propagation an Beta-Planes  

Science Conference Proceedings (OSTI)

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

Donal O'Sullivan

1988-01-01T23:59:59.000Z

39

Barotropic Vortex Evolution on a Beta Plane  

Science Conference Proceedings (OSTI)

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

Lloyd J. Shapiro; Katsuyuki V. Ooyama

1990-01-01T23:59:59.000Z

40

Barotropic Continental Shelf Waves on a ?-Plane  

Science Conference Proceedings (OSTI)

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

A. Dorr; R. Grimshaw

1986-08-01T23:59:59.000Z

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


41

MHK Projects/Wrangell Narrows Tidal Energy Project | Open Energy  

Open Energy Info (EERE)

Wrangell Narrows Tidal Energy Project Wrangell Narrows Tidal Energy Project < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":56.6324,"lon":-132.936,"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":""}]}

42

MHK Projects/Castine Harbor Badaduce Narrows | Open Energy Information  

Open Energy Info (EERE)

Castine Harbor Badaduce Narrows Castine Harbor Badaduce Narrows < 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":43.9294,"lon":-68.6172,"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":""}]}

43

MHK Projects/Lubec Narrows Tidal | Open Energy Information  

Open Energy Info (EERE)

Lubec Narrows Tidal Lubec Narrows Tidal < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.8652,"lon":-66.9828,"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":""}]}

44

Narrow groove welding gas diffuser assembly and welding torch  

DOE Patents (OSTI)

A diffuser assembly is provided for narrow groove welding using an automatic gas tungsten arc welding torch. The diffuser assembly includes manifold adapted for adjustable mounting on the welding torch which is received in a central opening in the manifold. Laterally extending manifold sections communicate with a shield gas inlet such that shield gas supplied to the inlet passes to gas passages of the manifold sections. First and second tapered diffusers are respectively connected to the manifold sections in fluid communication with the gas passages thereof. The diffusers extend downwardly along the torch electrode on opposite sides thereof so as to release shield gas along the length of the electrode and at the distal tip of the electrode. The diffusers are of a transverse width which is on the order of the thickness of the electrode so that the diffusers can, in use, be inserted into a narrow welding groove before and after the electrode in the direction of the weld operation.

Rooney, Stephen J.

2000-02-04T23:59:59.000Z

45

Narrow groove welding gas diffuser assembly and welding torch  

DOE Patents (OSTI)

A diffuser assembly is provided for narrow groove welding using an automatic gas tungsten arc welding torch. The diffuser assembly includes a manifold adapted for adjustable mounting on the welding torch which is received in a central opening in the manifold. Laterally extending manifold sections communicate with a shield gas inlet such that shield gas supplied to the inlet passes to gas passages of the manifold sections. First and second tapered diffusers are respectively connected to the manifold sections in fluid communication with the gas passages thereof. The diffusers extend downwardly along the torch electrode on opposite sides thereof so as to release shield gas along the length of the electrode and at the distal tip of the electrode. The diffusers are of a transverse width which is on the order of the thickness of the electrode so that the diffusers can, in use, be inserted into a narrow welding groove before and after the electrode in the direction of the weld operation.

Rooney, Stephen J. (East Berne, NY)

2001-01-01T23:59:59.000Z

46

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

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

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

47

Coordinated cutting plane generation via multi-objective separation  

E-Print Network (OSTI)

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

48

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

49

Woodruff Narrows low head hydroelectric power plant feasibility determination  

DOE Green Energy (OSTI)

Woodruff Narrows Reservoir, owned by the State of Utah, was built in 1961 as an irrigation reservoir. The reservoir outlet works and spillway are in need of repair, and plans have been made to enlarge the reservoir from its present capacity of 28,000 acre-feet to 53,200 acre-feet when these repairs are made. The purpose of this study was to determine if it is feasible to add hydropower facilities when the reservoir is repaired and enlarged. A computer simulation model based on mean monthly values, utilizing 26 years of recorded streamflow into the reservoir, was used to determine the mean annual energy potential for the following configurations: (1) present dam, (2) the proposed enlarged dam, (3) a new dam at the lower site with a maximum head of 65 feet, and (4) a new dam at the lower site which would store water to the same elevation as the proposed enlarged dam. Results of the simulation study show that maximum power capacities are respectively 2.1, 3.0, 3.9, and 4.5 megawatts. The marketing potential for this electric power, cost estimates and financial analysis, and environmental, social, and regulatory aspects of the proposed hydropower facilities were evaluated. The results showed the addition of hydroelectric power development at the Woodruff Narrows site would have minimal social and environmental effects on the area, would result in little or no changes in the present patterns of water and land use, income, population, and employment and would not result in any significant changes of the social structure or characteristics of the area. However, hydroelectric power development at the Woodruff Narrows site is not economically feasible at the present time. (LCL)

Not Available

1979-03-01T23:59:59.000Z

50

The stochastic nature induced by laser noise in narrow transitions  

E-Print Network (OSTI)

We use a probabilistic method to describe the effect of laser noise on the laser-atom interaction, in the case that the atom is a two level system without spontaneous emission. The stochastic differential equation for the laser-atom interaction is analyzed in the sense of perturbation approach, and we construct a stochastic process corresponding to the time evolution of the atom's wave function, whose extra randomness is induced by the laser noise. It also provides the layout of a theory for the possible experiment of measuring the laser line width by driving a narrow atomic transition.

Sun, Yuan

2013-01-01T23:59:59.000Z

51

The stochastic nature induced by laser noise in narrow transitions  

E-Print Network (OSTI)

We use a probabilistic method to describe the effect of laser noise on the laser-atom interaction, in the case that the atom is a two level system without spontaneous emission. The stochastic differential equation for the laser-atom interaction is analyzed in the sense of perturbation approach, and we construct a stochastic process corresponding to the time evolution of the atom's wave function, whose extra randomness is induced by the laser noise. It also provides the layout of a theory for the possible experiment of measuring the laser line width by driving a narrow atomic transition.

Yuan Sun; Chen Zhang

2013-07-08T23:59:59.000Z

52

Characteristics of crystallization of complex plasmas in narrow channels  

SciTech Connect

Molecular dynamics simulations are performed to analyze the dependence of the behavior of complex (dusty) plasmas in narrow three-dimensional channels on the confining potential. Dynamics of micrometer-sized particles is modeled by using Langevin thermostat and Yukawa (screened Coulomb) pair interaction potential. A detailed analysis shows that confinement strongly affects plasma crystallization characteristics and local ordering of dust grains. In particular, the formation of a new, quasi-crystalline phase induced by hard-wall confinement is revealed. Transitions between different lattice symmetries induced by changes in channel width are examined. Strong dependence of the transverse dust density profile on the shielding parameter (ratio between mean interparticle distance and screening length) can be used to manipulate the dust-grain flux in such a system.

Klumov, B. A., E-mail: klumov@mpe.pmg.de; Morfill, G. E. [Max-Planck-Institut fuer Extraterrestrische Physik (Germany)

2008-11-15T23:59:59.000Z

53

Long-pulse-width narrow-bandwidth solid state laser  

DOE Patents (OSTI)

A long pulse laser system emits 500-1000 ns quasi-rectangular pulses at 527 nm with near diffraction-limited divergence and near transform-limited bandwidth. The system consists of one or more flashlamp-pumped Nd:glass zig-zag amplifiers, a very low threshold stimulated-Brillouin-scattering (SBS) phase conjugator system, and a free-running single frequency Nd:YLF master oscillator. Completely passive polarization switching provides eight amplifier gain passes. Multiple frequency output can be generated by using SBS cells having different pressures of a gaseous SBS medium or different SBS materials. This long pulse, low divergence, narrow-bandwidth, multi-frequency output laser system is ideally suited for use as an illuminator for long range speckle imaging applications. Because of its high average power and high beam quality, this system has application in any process which would benefit from a long pulse format, including material processing and medical applications.

Dane, C. Brent (Livermore, CA); Hackel, Lloyd A. (Livermore, CA)

1997-01-01T23:59:59.000Z

54

Narrow Field of View Zenith Radiometer (NFOV) Handbook  

SciTech Connect

The two-channel narrow field-of-view radiometer (NFOV2) is a ground-based radiometer that looks straight up and measures radiance directly above the instrument at wavelengths of 673 and 870 nm. The field-of-view of the instrument is 1.2 degrees, and the sampling time resolution is one second. Measurements of the NFOV2 have been used to retrieve optical properties for overhead clouds that range from patchy to overcast. With a one-second sampling rate of the NFOV2, faster than almost any other ARM Climate Research Facility (ACRF) instrument, we are able, for the first time, to capture changes in cloud optical properties at the natural time scale of cloud evolution.

Chiu, C; Marshak, A; Hodges, G; Barnard, JC; Schmelzer, J

2008-11-01T23:59:59.000Z

55

Split-field pupil plane determination apparatus  

DOE Patents (OSTI)

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

Salmon, Joseph T. (Livermore, CA)

1996-01-01T23:59:59.000Z

56

QSO Narrow [OIII] Line Width and Host Galaxy Luminosity  

E-Print Network (OSTI)

Galaxy bulge luminosity L, black hole mass (Mbh), and stellar velocity dispersion (sigma_*) increase together in a way suggesting a close evolutionary relationship. Measurements of the Mbh-sigma_* relationship as a function of cosmic time may shed light on the origin of this relationship. Direct measurements of sigma_* at high redshift are difficult, and the width of the narrow emission lines of AGN has been proposed as a surrogate. We investigate the utility of using sigma_[OIII] for sigma_* by examining host galaxy magnitudes and [OIII] line widths for low redshift QSOs. For radio-quiet QSOs, sigma_[OIII] is consistent in the mean with the value of sigma_* predicted by the Faber-Jackson relation. For our limited range of host luminosity, scatter obscures the expected increase of sigma_[OIII] with host luminosity. However, for a sample of AGN covering a wide range of measured or inferred sigma_*, there is a clear increase of sigma_[OIII] with sigma_*. Radio-loud QSOs on average have sigma_* smaller by ~0.1 dex than radio-quiet QSOs of similar host luminsotiy, at least for luminosities typical of PG QSOs. Star formation rates in our low redshift QSOs are smaller than required to maintain the typical observed ratio of bulge mass to black hole mass.

E. W. Bonning; G. A. Shields; S. Salviander; R. J. McLure

2005-03-02T23:59:59.000Z

57

Experimental investigations on sodium plugging in narrow flow channels.  

SciTech Connect

A series of experiments was performed to investigate the potential for plugging of narrow flow channels of sodium by impurities (e.g., oxides). In the first phase of the experiments, clean sodium was circulated through the test sections simulating flow channels in a compact diffusion-bonded heat exchanger such as a printed circuit heat exchanger. The primary objective was to see if small channels whose cross sections are semicircles of 2, 4, and 6 mm in diameter are usable in liquid sodium applications where sodium purity is carefully controlled. It was concluded that the 2-mm channels, the smallest of the three, could be used in clean sodium systems at temperatures even as low as 100 to 110 C without plugging. In the second phase, sodium oxide was added to the loop, and the oxygen concentration in the liquid sodium was controlled by means of varying the cold-trap temperature. Intentional plugging was induced by creating a cold spot in the test sections, and the subsequent plugging behavior was observed. It was found that plugging in the 2-mm test section was initiated by lowering the cold spot temperature below the cold-trap temperature by 10 to 30 C. Unplugging of the plugged channels was accomplished by heating the affected test section.

Momozaki, Y.; Cho, D. H.; Sienicki, J. J.; Moisseytsev, A.; Nuclear Engineering Division

2010-08-01T23:59:59.000Z

58

Hydromagnetic Instability in plane Couette Flow  

E-Print Network (OSTI)

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

Bonanno, Alfio

2007-01-01T23:59:59.000Z

59

Shock Waves in Plane Symmetric Spacetimes  

E-Print Network (OSTI)

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

Alan D. Rendall; Fredrik Sthl

2008-06-10T23:59:59.000Z

60

Energy Distribution of Black Plane Solutions  

E-Print Network (OSTI)

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

Paul Halpern

2005-05-11T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

The Propagation Mechanism of a Vortex on the ? Plane  

Science Conference Proceedings (OSTI)

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

Peter Jan van Leeuwen

2007-09-01T23:59:59.000Z

62

Projective Plane And Planar Quantum Codes  

E-Print Network (OSTI)

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

Michael H. Freedman; David A. Meyer

1998-01-01T23:59:59.000Z

63

Wavelet Algorithm for the Numerical Solution of Plane Elasticity Problem  

Science Conference Proceedings (OSTI)

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

Youjian Shen; Wei Lin

2001-12-01T23:59:59.000Z

64

Capillary electrophoresis-fluorescence line narrowing system (CE-FLNS) for on-line structural characterization  

DOE Patents (OSTI)

Capillary electrophoresis (CE) is interfaced with low temperature fluorescence line-narrowing (FLN) spectroscopy for on-line structural characterization of separated molecular analytes.

Jankowiak, Ryszard J. (Ames, IA); Small, Gerald J. (Ames, IA); Shields, Peter A. (Reading, MA)

1999-04-27T23:59:59.000Z

65

Personal Body Armor Testing  

Science Conference Proceedings (OSTI)

Directory of Accredited Laboratories. Personal Body Armor Testing. In 2006, the US Department of Justice (DOJ) National ...

2014-01-03T23:59:59.000Z

66

Body of work  

SciTech Connect

Selection of the right dump body for the job requires careful thinking, as is discussed in this paper. 2 figs.

Carter, R.A.

2008-06-15T23:59:59.000Z

67

Phosphorus-31 MRI of hard and soft solids using quadratic echo line-narrowing  

E-Print Network (OSTI)

Phosphorus-31 MRI of hard and soft solids using quadratic echo line-narrowing Merideth A. Freya gradients in sync with this line-narrowing sequence offers a fresh approach to carry out MRI of hard). Extending the reach of MRI to the study of other elements, and to hard or soft solids, opens new frontiers

Haller, Gary L.

68

Fever and Body Temperature  

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

Fever and Body Temperature Fever and Body Temperature Name: Ying Location: N/A Country: N/A Date: N/A Question: Hi, I have a few questions that I want to ask you: Why does your body chose to raise its temperature when you have a fever? Replies: Most bacteria and viruses that live in your body grow best at body temperature. They don't grow very well when the temperature is raised. When there are bacteria in your body they give off chemicals that signal white blood cells to come to try to eat them and also affect an area in your brain called the hypothalamus. This part of the brain controls alot of the automatic functions in your body and is also the site of your body's "thermostat". When the chemicals from the bacteria circulate through the hypothalamus it sets the body's temperature higher. This is called a fever. Your body kind of tries to "sweat out" the bacteria and kill them with a higher temperature. Some scientists question whether trying to bring down a fever is the best thing to do. If it isn't too high, some believe we should just let it work

69

PERSONAL BODY ARMOR  

Science Conference Proceedings (OSTI)

... ARMOR ... The handbook was written with the participation of technical experts in the field of personal body armor and was approved by NVLAP. ...

2011-09-21T23:59:59.000Z

70

Coordinated cutting plane generation via multi-objective separation  

E-Print Network (OSTI)

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

71

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

Science Conference Proceedings (OSTI)

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

72

MHK Technologies/C Plane | Open Energy Information  

Open Energy Info (EERE)

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

73

Black holes and black strings in plane waves  

E-Print Network (OSTI)

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

Witt, Julian Le

2009-01-01T23:59:59.000Z

74

Vehicle body cover  

SciTech Connect

This patent describes a vehicle body covered with a vehicle body cover which comprises: a front cover part, a rear cover part, a pair of side cover parts, and a roof cover part: the front cover part having portions adapted to cover only a hood, an area around a windshield and tops of front fenders of a vehicle body. The portion covering the hood is separated from the portions covering the tops of the fenders by cuts in the front cover part, the front cover part having an un-cut portion corresponding to a position at which the hood is hinged to the car body. The front cover part has a cut-out at a position corresponding to the windshield of the vehicle body and the front cover part has at least one cut-out at a position corresponding to where a rear view mirror is attached to the vehicle body; and the rear cover part having portions adapted to cover an area around a rear window, a trunk lid and a rear end of the vehicle body, the portion covering the trunk lid separated from the rest of the rear cover part by cuts corresponding to three sides of the trunk lid and an un-cut portion corresponding to a position at which the trunk lid is hinged to the vehicle body. The rear cover part has a hole at position corresponding to a trunk lid lock, a cut-out portion at a position corresponding to the rear window of the vehicle body, a cut-out at a position corresponding to a license plate of the vehicle body and cut-outs at positions corresponding to rear taillights of the vehicle body.

Hirose, T.

1987-01-13T23:59:59.000Z

75

BodyDaemon  

Science Conference Proceedings (OSTI)

This paper describes BodyDaemon a techno-conceptual art project that includes a server that is powered and configured by a participant's physiological states and a protocol for exchanging bio/server data across the Internet. Keywords: biofeedback, body, diy, embodiment, first-person methodologies, interactive art, network, physiological monitoring, protocol, xml

Carlos Castellanos; Thecla Schiphorst

2009-10-01T23:59:59.000Z

76

Maintaining body temperature  

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

Maintaining body temperature Maintaining body temperature Name: Jeff Location: N/A Country: N/A Date: N/A Question: What keeps the human body at a constant temperature of 98.6? Replies: Maintaining body temperature is very complex. It also takes a lot of energy. About 80% of the energy from the food you eat goes to maintaining body temperature. Basically, the chemical reactions of metabolism of stored food, especially fats, generate heat as a by product. This heat warms the body. The brain reads temperature and controls to some extent the rate of this metabolism. There are also many other mechanisms triggered by the brain to keep the core of your body warm, even if the periphery (skin) is cold. Blood vessels to the fingers and toes constrict, so that the cold air doesn't cool the blood too much, so that cooled blood doesn't cool down the heart and brain when it returns. In severe cases, your body will sacrifice a finger or a toe to keep you from dying of cold core temperature (frostbite: it saves your life!). Also the brain can order a lot of muscles to contract rapidly. This generates a lot of heat quickly, a response called shivering. There's much more to this exciting field of research.

77

Trimers in the resonant (2+1)-fermion problem on a narrow Feshbach resonance: Crossover from Efimovian to hydrogenoid spectrum  

Science Conference Proceedings (OSTI)

We study the quantum three-body free-space problem of two same-spin-state fermions of mass m interacting with a different particle of mass M, on an infinitely narrow Feshbach resonance with infinite s-wave scattering length. This problem is made interesting by the existence of a tunable parameter, the mass ratio {alpha}=m/M. By a combination of analytical and numerical techniques, we obtain a detailed picture of the spectrum of three-body bound states, within each sector of fixed total angular momentum l. For {alpha} increasing from 0, we find that the trimer states first appear at the l-dependent Efimovian threshold {alpha}{sub c}{sup (l)}, where the Efimov exponent s vanishes, and that the entire trimer spectrum (starting from the ground trimer state) is geometric for {alpha} tending to {alpha}{sub c}{sup (l)} from above, with a global energy scale that has a finite and nonzero limit. For further increasing values of {alpha}, the least bound trimer states still form a geometric spectrum, with an energy ratio exp(2{pi}/|s|) that becomes closer and closer to unity, but the most bound trimer states deviate more and more from that geometric spectrum and eventually form a hydrogenoid spectrum.

Castin, Yvan; Tignone, Edoardo [Laboratoire Kastler Brossel, Ecole Normale Superieure and CNRS, UPMC, 24 rue Lhomond, F-75231 Paris (France)

2011-12-15T23:59:59.000Z

78

Role of Narrow Mountains in Large-Scale Organization of Asian Monsoon Convection  

Science Conference Proceedings (OSTI)

The Asian summer monsoon is organized into distinct convection centers, but the mechanism for this organization is not well understood. Analysis of new satellite observations reveals that narrow mountain ranges are an important organizing agent ...

Shang-Ping Xie; Haiming Xu; N. H. Saji; Yuqing Wang; W. Timothy Liu

2006-07-01T23:59:59.000Z

79

Comparison of Narrow Bipolar Events with Ordinary Lightning as Proxies for Severe Convection  

Science Conference Proceedings (OSTI)

Narrow bipolar events (NBEs) are a recently studied intracloud electrical-discharge process. It is speculated that an NBE is instigated by the extensive atmospheric shower of an energetic cosmic ray. NBEs cause significant relaxation of the ...

Abram R. Jacobson; Mathew J. Heavner

2005-05-01T23:59:59.000Z

80

What Fraction of a Kelvin Wave Incident on a Narrow Strait Is Transmitted?  

Science Conference Proceedings (OSTI)

Parameters governing the fraction of a Kelvin wave transmitted through a narrow gap or channel include time dependence, nonlinearity, friction, and strait geometry, yet only limited regions of this parameter space have been explored. Linear ...

Helen L. Johnson; Chris Garrett

2006-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

Residual Currents Induced by Asymmetric Tidal Mixing in Weakly Stratified Narrow Estuaries  

Science Conference Proceedings (OSTI)

Residual currents induced by asymmetric tidal mixing were examined for weakly stratified, narrow estuaries using analytical and numerical models. The analytical model is an extension of the work of R. K. McCarthy, with the addition of tidal ...

Peng Cheng; Arnoldo Valle-Levinson; Huib E. de Swart

2010-09-01T23:59:59.000Z

82

Very Narrow Band Model Calculations of Atmospheric Fluxes and Cooling Rates  

Science Conference Proceedings (OSTI)

A new very narrow band model (VNBM) approach has been developed and incorporated into the MODTRAN atmospheric transmittanceradiance code. The VNBM includes a computational spectral resolution of 1 cm?1, a single-line Voigt equivalent width ...

L. S. Bernstein; A. Berk; P. K. Acharya; D. C. Robertson; G. P. Anderson; J. H. Chetwynd; L. M. Kimball

1996-10-01T23:59:59.000Z

83

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

Science Conference Proceedings (OSTI)

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

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

2003-11-01T23:59:59.000Z

84

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

Science Conference Proceedings (OSTI)

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

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

1987-09-01T23:59:59.000Z

85

Kinetic and stationary point-set embeddability for plane graphs  

Science Conference Proceedings (OSTI)

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

Zahed Rahmati; Sue H. Whitesides; Valerie King

2012-09-01T23:59:59.000Z

86

Clique problem, cutting plane proofs and communication complexity  

Science Conference Proceedings (OSTI)

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

Stasys Jukna

2012-10-01T23:59:59.000Z

87

Electricity in the Body  

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

Electricity in the Body Name: SEAN Location: NA Country: NA Date: NA Question: OUR BRAINS SEND ELECTRICAL IMPULSES RIGHT. IS IT BASICALLY SAME AS NORMAL ELECTRICITY? IS IT LIKE...

88

Body powered thermoelectric systems  

E-Print Network (OSTI)

Great interest exists for and progress has be made in the effective utilization of the human body as a possible power supply in hopes of powering such applications as sensors and continuously monitoring medical devices ...

Settaluri, Krishna Tej

2012-01-01T23:59:59.000Z

89

Body Fat as Insulation  

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

Body Fat as Insulation Name: Bulza Location: NA Country: NA Date: NA Question: Does the fat layer under the skinkeep an animal warm? Replies: Some animals, yes. Polar bears and...

90

WELDED JACKETED URANIUM BODY  

DOE Patents (OSTI)

A fuel element is presented for a neutronic reactor and is comprised of a uranium body, a non-fissionable jacket surrounding sald body, thu jacket including a portion sealed by a weld, and an inclusion in said sealed jacket at said weld of a fiux having a low neutron capture cross-section. The flux is provided by combining chlorine gas and hydrogen in the intense heat of-the arc, in a "Heliarc" welding muthod, to form dry hydrochloric acid gas.

Gurinsky, D.H.

1958-08-26T23:59:59.000Z

91

External vs. body temperature  

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

External vs. body temperature External vs. body temperature Name: jacqui Location: N/A Country: N/A Date: N/A Question: If one's internal body temperature is approximately 98.6, WHY when the external temperature is 98.6 do we feel hot? Since both temperatures are "balanced", shouldn't we feel comfortable? I am assuming here that humidity levels are controlled, and play no factor in the external temperature. Replies: First of all, skin temperature is lower than 98.6F; 98.6F is internal body temperature, so air at 98.6F is hotter than skin. But more important, it is the nervous system, and the cells in your skin that your brain uses to detect temperature that determine whether you "feel" hot or not, not whether the air is hotter than your skin. These are set so that you feel hot when the air is actually colder than your skin. Why? They are probably set to make you feel hot whenever the air is warm enough so that your body has some trouble getting rid of the excess heat it produces through metabolism. This insures that you take some actions to help your body cool off. Like drinking cool water, or reducing exercise

92

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.

93

The Warped Plane of the Classical Kuiper Belt  

E-Print Network (OSTI)

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

Chiang, Eugene

2008-01-01T23:59:59.000Z

94

Consejos para Ahorrar Gasolina - Planee y Combine Viajes  

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

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

95

Mathematical Description of the Shape of Plane Hexagonal Snow Crystals  

Science Conference Proceedings (OSTI)

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

P. K. Wang; S. M. Denzer

1983-04-01T23:59:59.000Z

96

The Generalization of Semigeostrophic Theory to the ?-Plane  

Science Conference Proceedings (OSTI)

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

Gudrun Magnusdottir; Wayne H. Schubert

1990-07-01T23:59:59.000Z

97

Freely Propagating Trench Waves on a Beta-Plane  

Science Conference Proceedings (OSTI)

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

Andrew J. Willmott; Arlene A. Bird

1983-09-01T23:59:59.000Z

98

Slow Evolution of Zonal Jets on the Beta Plane  

Science Conference Proceedings (OSTI)

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

A. J. Manfroi; W. R. Young

1999-03-01T23:59:59.000Z

99

Noise-Induced Transitions in a Barotropic ?-Plane Channel  

Science Conference Proceedings (OSTI)

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

Philip Sura

2002-01-01T23:59:59.000Z

100

General Solutions to Static Plane Symmetric Einstein's Equations  

E-Print Network (OSTI)

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

Leandro G. Gomes

2013-08-23T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

Selling body organs  

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

Selling body organs Selling body organs Name: Betty A Laliberte Location: N/A Country: N/A Date: N/A Question: If a tissue donor dies and some of his/her tissue is donated, should the family be given money or some other benefit? I am a freshman at York HS and am doing a bioethics project. Replies: An interesting question. In my opinion, a family should not receive payment for organ donation. That would introduce an economic element into the decision, which does not seem appropriate. One problem is: Who will pay? The recipient? What if he can't afford it? Who gets the organ? The highest bidder? I guess part of my problem with selling organs and tissues is religious in nature. To me, my life and my body were given freely to me and they are not mine to sell to someone else. They certainly do not belong to my family to profit from.

102

Load Capacity of Bodies  

E-Print Network (OSTI)

For the stress analysis in a plastic body $\\Omega$, we prove that there exists a maximal positive number $C$, the \\emph{load capacity ratio,} such that the body will not collapse under any external traction field $t$ bounded by $Y_{0}C$, where $Y_0$ is the elastic limit. The load capacity ratio depends only on the geometry of the body and is given by $$ \\frac{1}{C}=\\sup_{w\\in LD(\\Omega)_D} \\frac{\\int_{\\partial\\Omega}|w|dA} {\\int_{\\Omega}|\\epsilon(w)|dV}=\\left\\|\\gamma_D\\right\\|. $$ Here, $LD(\\Omega)_D$ is the space of isochoric vector fields $w$ for which the corresponding stretchings $\\epsilon(w)$ are assumed to be integrable and $\\gamma_D$ is the trace mapping assigning the boundary value $\\gamma_D(w)$ to any $w\\in LD(\\Omega)_D$.

Reuven Segev

2005-11-01T23:59:59.000Z

103

Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms  

E-Print Network (OSTI)

Laser cooling on weak transitions is a useful technique for reaching ultracold temperatures in atoms with multiple valence electrons. However, for strongly magnetic atoms a conventional narrow-line magneto-optical trap (MOT) is destabilized by competition between optical and magnetic forces. We overcome this difficulty in Er by developing an unusual narrow-line MOT that balances optical and magnetic forces using laser light tuned to the blue side of a narrow (8 kHz) transition. The trap population is spin-polarized with temperatures reaching below 2 microkelvin. Our results constitute an alternative method for laser cooling on weak transitions, applicable to rare-earth-metal and metastable alkaline earth elements.

Berglund, Andrew J; McClelland, Jabez J

2008-01-01T23:59:59.000Z

104

Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms  

E-Print Network (OSTI)

Laser cooling on weak transitions is a useful technique for reaching ultracold temperatures in atoms with multiple valence electrons. However, for strongly magnetic atoms a conventional narrow-line magneto-optical trap (MOT) is destabilized by competition between optical and magnetic forces. We overcome this difficulty in Er by developing an unusual narrow-line MOT that balances optical and magnetic forces using laser light tuned to the blue side of a narrow (8 kHz) transition. The trap population is spin-polarized with temperatures reaching below 2 microkelvin. Our results constitute an alternative method for laser cooling on weak transitions, applicable to rare-earth-metal and metastable alkaline earth elements.

Andrew J. Berglund; James L. Hanssen; Jabez J. McClelland

2008-02-06T23:59:59.000Z

105

Porous metallic bodies  

DOE Patents (OSTI)

Porous metallic bodies having a substantially uniform pore size of less than about 200 microns and a density of less than about 25 percent theoretical, as well as the method for making them, are disclosed. Group IIA, IIIB, IVB, VB, and rare earth metal hydrides a

Landingham, R.L.

1984-03-13T23:59:59.000Z

106

Effect of Narrow Cut Oil Shale Distillates on HCCI Engine Performance  

Science Conference Proceedings (OSTI)

In this investigation, oil shale crude obtained from the Green River Formation in Colorado using Paraho Direct retorting was mildly hydrotreated and distilled to produce 7 narrow boiling point fuels of equal volumes. The resulting derived cetane numbers ranged between 38.3 and 43.9. Fuel chemistry and bulk properties strongly correlated with boiling point.

Eaton, Scott J [ORNL; Bunting, Bruce G [ORNL; Lewis Sr, Samuel Arthur [ORNL; Fairbridge, Craig [National Centre for Upgrading Technology, Canada

2009-01-01T23:59:59.000Z

107

Search for narrow resonances in the lepton final state at CMS  

E-Print Network (OSTI)

We discuss the results of searches for high-mass narrow resonances decaying into pairs of leptons using pp collisions at 7 TeV delivered by LHC and collected with the CMS detector in 2010 and 2011. These include searches for the Z' bosons and RS gravitons.

Gennadiy Kukartsev; for the CMS Collaboration

2011-10-13T23:59:59.000Z

108

Search for narrow resonances in the lepton final state at CMS  

E-Print Network (OSTI)

We discuss the results of searches for high-mass narrow resonances decaying into pairs of leptons using pp collisions at 7 TeV delivered by LHC and collected with the CMS detector in 2010 and 2011. These include searches for the Z' bosons and RS gravitons.

Kukartsev, Gennadiy

2011-01-01T23:59:59.000Z

109

Event-plane flow analysis without nonflow effects  

SciTech Connect

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

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

2011-01-15T23:59:59.000Z

110

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

E-Print Network (OSTI)

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

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

2008-03-18T23:59:59.000Z

111

Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District,  

Open Energy Info (EERE)

Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District, Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District, Eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining District, Eastern California Details Activities (0) Areas (0) Regions (0) Abstract: Banded, epithermal quartz-adularia veins have produced about 1.5 million ounces of gold and 7 million ounces of silver from the Bodie mining district, eastern California. The veins cut dacitic lava flows, pyroclastic rocks and intrusions. Sinter boulders occur in a graben structure at the top of Bodie Bluff and fragments of sinter and mineralized quartz veins occur in hydrothermal breccias nearby. Explosive venting evidently was part of the evolution of the ore-forming geothermal systems which, at one time,

112

An Analytic Center Cutting Plane Approach for Conic Programming  

Science Conference Proceedings (OSTI)

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

Vasile L. Basescu; John E. Mitchell

2008-08-01T23:59:59.000Z

113

Thermally Forced Surface Winds on an Equatorial Beta Plane  

Science Conference Proceedings (OSTI)

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

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

1999-06-01T23:59:59.000Z

114

A Geosolitary Wave Solution on an f Plane  

Science Conference Proceedings (OSTI)

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

Chunyan Li

2004-04-01T23:59:59.000Z

115

Alignment of Hurricane-like Vortices on f and ? Planes  

Science Conference Proceedings (OSTI)

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

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

2009-06-01T23:59:59.000Z

116

Projecting diffusion along the normal bundle of a plane curve  

E-Print Network (OSTI)

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

Carlos Valero Valdes; Rafael Herrera Guzman

2013-08-21T23:59:59.000Z

117

MHK Projects/Tacoma Narrows Tidal Energy Project | Open Energy Information  

Open Energy Info (EERE)

Narrows Tidal Energy Project Narrows Tidal Energy Project < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":5,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"File:Aquamarine-marker.png","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.2591,"lon":-122.445,"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":""}]}

118

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":""}]}

119

The Bolocam Galactic Plane Survey: Survey Description and Data Reduction  

E-Print Network (OSTI)

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

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

2010-01-01T23:59:59.000Z

120

Electromagnetic Casimir Energies of Semi-Infinite Planes  

E-Print Network (OSTI)

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

Mohammad F. Maghrebi; Noah Graham

2011-02-08T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

Angle amplifying optics using plane and ellipsoidal reflectors  

DOE Patents (OSTI)

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

Glass, Alexander J. (Pleasanton, CA)

1977-01-01T23:59:59.000Z

122

Acoustic plane wave preferential orientation of metal oxide superconducting materials  

DOE Patents (OSTI)

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

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

1991-01-01T23:59:59.000Z

123

Preparation of the spacer for narrow electrode gap configuration in ionization-based gas sensor  

Science Conference Proceedings (OSTI)

Carbon nanotubes (CNTs) have started to be developed as the sensing element for ionization-based gas sensors due to the demand for improved sensitivity, selectivity, stability and other sensing properties beyond what can be offered by the conventional ones. Although these limitations have been overcome, the problems still remain with the conventional ionization-based gas sensors in that they are bulky and operating with large breakdown voltage and high temperature. Recent studies have shown that the breakdown voltage can be reduced by using nanostructured electrodes and narrow electrode gap. Nanostructured electrode in the form of aligned CNTs array with evenly distributed nanotips can enhance the linear electric field significantly. The later is attributed to the shorter conductivity path through narrow electrode gap. The paper presents the study on the design consideration in order to realize ionization based gas sensor using aligned carbon nanotubes array in an optimum sensor configuration with narrow electrode gap. Several deposition techniques were studied to deposit the spacer, the key component that can control the electrode gap. Plasma spray deposition, electron beam deposition and dry oxidation method were employed to obtain minimum film thickness around 32 {mu}m. For plasma spray method, sand blasting process is required in order to produce rough surface for strong bonding of the deposited film onto the surface. Film thickness, typically about 39 {mu}m can be obtained. For the electron beam deposition and dry oxidation, the film thickness is in the range of nanometers and thus unsuitable to produce the spacer. The deposited multilayer film consisting of copper, alumina and ferum on which CNTs array will be grown was found to be removed during the etching process. This is attributed to the high etching rate on the thin film which can be prevented by reducing the rate and having a thicker conductive copper film.

Saheed, Mohamed Shuaib Mohamed; Mohamed, Norani Muti; Burhanudin, Zainal Arif [Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Tronoh, Perak. (Malaysia); Fundamental and Applied Science, Universiti Teknologi PETRONAS, Seri Iskandar, Tronoh, Perak. (Malaysia); Electrical and Electronic Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Tronoh, Perak. (Malaysia)

2012-09-26T23:59:59.000Z

124

Bioanalytical Applications of Fluorescence Line-Narrowing and Non-Line-Narrowing Spectroscopy Interfaced with Capillary Electrophoresis and High-Performance Liquid Chromatography  

Science Conference Proceedings (OSTI)

Capillary electrophoresis (CE) and high-performance liquid chromatography (HPLC) are widely used analytical separation techniques with many applications in chemical, biochemical, and biomedical sciences. Conventional analyte identification in these techniques is based on retention/migration times of standards; requiring a high degree of reproducibility, availability of reliable standards, and absence of coelution. From this, several new information-rich detection methods (also known as hyphenated techniques) are being explored that would be capable of providing unambiguous on-line identification of separating analytes in CE and HPLC. As further discussed, a number of such on-line detection methods have shown considerable success, including Raman, nuclear magnetic resonance (NMR), mass spectrometry (MS), and fluorescence line-narrowing spectroscopy (FLNS). In this thesis, the feasibility and potential of combining the highly sensitive and selective laser-based detection method of FLNS with analytical separation techniques are discussed and presented. A summary of previously demonstrated FLNS detection interfaced with chromatography and electrophoresis is given, and recent results from on-line FLNS detection in CE (CE-FLNS), and the new combination of HPLC-FLNS, are shown.

Kenneth Paul Roberts

2002-06-27T23:59:59.000Z

125

Construction of narrow-band regenerative amplifier for momentum imaging spectroscopy of lithium dimer  

Science Conference Proceedings (OSTI)

We constructed a Ti:Sapphire narrow-band regenerative amplifier as the probe laser of the experiment of momentum imaging spectroscopy of lithium dimer. The spectral profile of the regenerative cavity was designed by three birefringent filters and a plate of etalon. With 1.1-mJ pumping by the second harmonics of Nd:YLF laser, mode-locked seed pulses were amplified to {approx}25 {mu}J at 1-kHz repetition, with the bandwidth of {approx}0.7 cm{sup -1}.

Matsuoka, Leo; Hashimoto, Masashi; Yokoyama, Keiichi [Quantum Beam Science Directorate, Japan Atomic Energy Agency, 8-1-7, Umemidai, Kizugawa, Kyoto 619-0215 (Japan)

2012-07-11T23:59:59.000Z

126

Measurement of the surface wavelength distribution of narrow-band radiation by a colorimetric method  

SciTech Connect

A method is suggested for determining the wavelength of narrow-band light from a digital photograph of a radiating surface. The digital camera used should be appropriately calibrated. The accuracy of the wavelength measurement is better than 1 nm. The method was tested on the yellow doublet of mercury spectrum and on the adjacent continuum of the incandescent lamp radiation spectrum. By means of the method suggested the homogeneity of holographic sensor swelling was studied in stationary and transient cases. (laser applications and other topics in quantum electronics)

Kraiskii, A V; Mironova, T V; Sultanov, T T [P N Lebedev Physical Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2010-09-10T23:59:59.000Z

127

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

Science Conference Proceedings (OSTI)

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

Virginie Marcal; Danile Hauser; Frank Roux

1993-04-01T23:59:59.000Z

128

Narrow- and Broad-Band Satellite Measurements of Shortwave Radiation: Conversion Simulations with a General Circulation Model  

Science Conference Proceedings (OSTI)

The Oregon State University/Lawrence Livermore National Laboratory general circulation model has been employed as a vehicle for suggesting and exploring various means of converting narrow-band measurements of reflected solar radiation from the ...

Robert D. Cess; Gerald L. Potter

1986-12-01T23:59:59.000Z

129

The stabilization of a methane-air edge flame within a mixing layer in a narrow channel  

SciTech Connect

The flame stabilization mechanism of a methane-air edge flame formulated in a narrow channel was experimentally investigated and compared with a simple analytical model. Non-premixed flames were classified into premixed flame modes and edge flame modes. The correlation between the propagation velocity and the fuel concentration gradient in a narrow channel was investigated and the applicability of ordinary edge-flame theory was appraised. (author)

Lee, Min Jung; Kim, Nam Il [School of Mechanical Engineering, Chung-Ang University, Dongjak, Seoul 156-76 (Korea)

2010-01-15T23:59:59.000Z

130

Slim Disks with Transition Regions and Applications to Microquasars and Narrow Line Seyfert 1 Galaxies  

E-Print Network (OSTI)

Slim disks have been received much attention because of the increasing evidence for the super-critical accreting objects. In this paper, we make an attempt to construct a unified model, in which the viscosity and the dimensionless accretion rate can span rather wide ranges. We replace blackbody radiation under diffusion approximation with a bridged formula, which accounts for both blackbody radiation and thermal bremsstrahlung in optically-thick and -thin cases, respectively. Thus this allows us to investigate the structures of and the emergent spectra from slim disks in a wider parameter space, covering transition regions from optically thick to optically thin. We show that there is a maximum transition radius, roughly $R_{\\rm tr, max}/R_g\\sim 50$ when $\\dot{M}/\\dot{M}_{\\rm C}\\sim 15$. The emergent spectra from the unified model of the accretion disk have been calculated. A simple model of hot corona above the slim disk is taken into account for the hard X-ray spectrum in this paper based on Wang & Netzer (2003). We have applied the present model to the microquasar GRS 1915+105, narrow line Seyfert 1 galaxies RE J1034+396 and Akn 564. Our model can explain well the broadband X-ray spectra of narrow line Seyfert 1 galaxies, microquasars and possible ultra-luminous compact X-ray sources. The present model can be widely applied to the candidates of super-critical accreting objects.

Lin-Hong Chen; Jian-Min Wang

2004-07-07T23:59:59.000Z

131

STIS Ultraviolet Spectral Evidence for Outflows in Extreme Narrow-Line Seyfert 1 Galaxies  

E-Print Network (OSTI)

(abridged) I present and discuss the results of HST STIS observations of IRAS 13224-3809 and 1H 0707-495, two narrow-line Seyfert 1 (NLS1) galaxies. We discovered that high-ionization UV emission lines are much broader and strongly blueshifted compared with the low-ionization and intermediate-ionization lines, which are relatively narrow and centered at the rest wavelength. We interpret this as evidence that the high-ionization lines come from a wind, while the low-ionization lines are emitted from the accretion disk or low-velocity base of the wind. The optically thick disk blocks our view of the receding wind. We also found that not all NLS1s display strongly blueshifted emission lines, and the degree of asymmetry is inversely correlated with the equivalent width and correlated with the SiIII] to CIII] ratio, a density indicator. It may also be significant that these NLS1s display the extreme in the X-ray properties: they have the strongest X-ray soft-excess components and the highest-amplitude, flaring variability. We postulate that this combination of properties are all related to a high value of L/M_BH, even among NLS1s. The high-ionization and low-ionization lines are nearly completely kinematically separated, a fact that allows us to study the conditions in the disk and wind separately.(...)

Karen M. Leighly

2000-12-08T23:59:59.000Z

132

STIS Ultraviolet Spectral Evidence for Outflows in Extreme Narrow-Line Seyfert 1 Galaxies  

E-Print Network (OSTI)

(abridged) I present and discuss the results of HST STIS observations of IRAS 13224-3809 and 1H 0707-495, two narrow-line Seyfert 1 (NLS1) galaxies. We discovered that high-ionization UV emission lines are much broader and strongly blueshifted compared with the low-ionization and intermediate-ionization lines, which are relatively narrow and centered at the rest wavelength. We interpret this as evidence that the high-ionization lines come from a wind, while the low-ionization lines are emitted from the accretion disk or low-velocity base of the wind. The optically thick disk blocks our view of the receding wind. We also found that not all NLS1s display strongly blueshifted emission lines, and the degree of asymmetry is inversely correlated with the equivalent width and correlated with the SiIII] to CIII] ratio, a density indicator. It may also be significant that these NLS1s display the extreme in the X-ray properties: they have the strongest X-ray soft-excess components and the highest-amplitude, flaring var...

Leighly, K M

2000-01-01T23:59:59.000Z

133

Non-modal analysis of the diocotron instability: Plane geometry  

Science Conference Proceedings (OSTI)

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

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

2012-08-15T23:59:59.000Z

134

Coordinate Conditions for a Uniformly Accelerated or Static Plane Symmetric  

E-Print Network (OSTI)

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

unknown authors

2004-01-01T23:59:59.000Z

135

Body Area Networks: A Survey  

Science Conference Proceedings (OSTI)

Advances in wireless communication technologies, such as wearable and implantable biosensors, along with recent developments in the embedded computing area are enabling the design, development, and implementation of body area networks. This class of ... Keywords: body area networks, survey, wireless sensor networks

Min Chen; Sergio Gonzalez; Athanasios Vasilakos; Huasong Cao; Victor C. Leung

2011-04-01T23:59:59.000Z

136

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

Science Conference Proceedings (OSTI)

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

Lazaros Oreopoulos; Roger Davies

1998-05-01T23:59:59.000Z

137

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

138

Hyperfine Structure eind Exchange Narrowing^ C. H. Townes* and J. Turkevich**  

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

structure eind Exc structure eind Exc of Paramagnetic Resonance Hyperfine Structure eind Exchange Narrowing^ C. H. Townes* and J. Turkevich** Brookhaven NationaJ. Laboratory The free radical a., a-diphenyl p-picryl hydrazyl, {C^E^)^-liC^E^ (NO-)^* shows the strongest and narrowest electronic paramagnetic resonance absorption so far reported. This resonance was observed by its effect on the transmission of microwaves (frequency approxi- mately 2l4-,000 m.c.) through a TEQ, cavity with a small amount of the free radical placed approximately on the axis of the cavity. The microwave frequency was tuned to give maximum transmission throxigh the cavity while the cavity was in place between the pole pieces of an electromagnet. With an amoxmt of the free radical as small as 2 mg.

139

Spectral Linewidth Narrowing and Tunable Two-Color Laser Operation of Two Diode Laser Arrays  

SciTech Connect

We propose and implement a common external cavity to narrow spectral linewidth of two broad-area laser diode arrays (LDAs) and align their center wavelengths. The locked center wavelength of two LDAs can be tuned in the range of {approx}10 nm by tuning the tilted angle of the diffraction grating. The output beams of two LDAs are spatially overlapped through the polarization beam splitter of the common external cavity, and the total output power equals the power of two LDAs. The center wavelength of each LDA can be independently tuned by shifting the corresponding fast-axis collimation lens. As a result, the high-power two-color LDA operation is demonstrated with the tunable wavelength difference of up to 2 nm ({approx}1 THz).

Liu, Bo [ORNL; Braiman, Yehuda [ORNL

2012-01-01T23:59:59.000Z

140

Emergent dimensional reduction of the spin sector in a model for narrow-band manganites  

SciTech Connect

The widely used double-exchange model for manganites is shown to support various striped phases at filling fractions 1/n (n = 3, 4, 5, . . .), in the previously unexplored regime of narrow bandwidth and small Jahn-Teller coupling. Working in two dimensions, our main result is that these stripes can be individually spin flipped without a physically relevant change in the energy, i.e., we find a large ground-state manifold with nearly degenerate energies. The two-dimensional spin system thus displays an unexpected dynamically generated dimensional reduction into decoupled one-dimensional stripes, even though the electronic states remain two dimensional. Relations of our results with recent literature addressing compass models in quantum computing are discussed.

Liang, Shuhua [ORNL; Daghofer, Maria [ORNL; Dong, Shuai [Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing; Sen, Cengiz [ORNL; Dagotto, Elbio R [ORNL

2011-01-01T23:59:59.000Z

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to obtain the most current and comprehensive results.


141

Complex Plasmas in Narrow Channels: Impact of Confinement on the Local Order  

Science Conference Proceedings (OSTI)

Two-dimensional (2D) and three-dimensional (3D) quasi-equilibrium configurations of a complex (dusty) plasma in narrow channels are investigated using the molecular dynamics simulations for various confining potentials (confinements). The dynamics of the microparticles is described within the framework of a Langevin thermostat with allowance for the pair interaction between charged particles, which is described by a screened Coulomb potential (Yukawa potential). Two types of confinement: the parabolic electrostatic potential and hard elastic wall are considered. It is shown that the confinement strongly affects the crystallization and the local order of the microparticles in the system under consideration; in particular, the appearance of a new quasicrystalline phase induced by the hard wall confinement is revealed in 3D case.

Klumov, B. A. [Max-Planck-Institut fuer Extraterrestrische Physik, D-85740 Garching (Germany)

2008-10-15T23:59:59.000Z

142

Conjectured explanation for room-temperature superconductivity in narrow channels in oxidized polypropylene  

SciTech Connect

Two groups of scientists have observed conductivity at least five orders of magnitude higher than that of copper at room temperature in narrow channels perpendicular to surfaces of films in oxidized polypropylene. For pulsed currents, this conductivity starts at a minimum value of applied current, and is destroyed at a current of about 30-60 times this value. Because of the existence of an upper critical current and of the observation that electronic thermal conductivity is negligible in the channels, it is thought that the channels are superconducting. A study is made of the hypothesis that these results are due to enhanced pairing, as first suggested by Parameter, when the drift velocity of current carriers becomes close to the velocity of sound or, in work by Hone and by the present author, to an appropriate phase velocity of optical phonons. Such enhancements can be expected to be larger in quasi-one-dimensional systems. 10 refs.

Eagles, D.M. (NASA Marshall Space Flight Center, Huntsville, AL (United States))

1994-06-01T23:59:59.000Z

143

Dynamic Monte Carlo simulation of coupled transport through a narrow multiply-occupied pore  

E-Print Network (OSTI)

Dynamic Monte Carlo simulations are used to study coupled transport (co-transport) through sub-nanometer-diameter pores. In this classic Hodgkin-Keynes mechanism, an ion species uses the large flux of an abundant ion species to move against its concentration gradient. The efficiency of co-transport is examined for various pore parameters so that synthetic nanopores can be engineered to maximize this effect. In general, the pore must be narrow enough that ions cannot pass each other and the charge of the pore large enough to attract many ions so that they exchange momentum. Co-transport efficiency increases as pore length increases, but even very short pores exhibit co-transport, in contradiction to the usual perception that long pores are necessary. The parameter ranges where co-transport occurs is consistent with current and near-future synthetic nanopore geometry parameters, suggesting that co-transport of ions may be a new application of nanopores.

Dezs? Boda; va Csnyi; Dirk Gillespie; Tams Kristf

2013-10-08T23:59:59.000Z

144

Water vapor transmittance models for narrow bands in the 13 to 19. mu. m spectral region  

Science Conference Proceedings (OSTI)

The purpose of this report is to document the development of water vapor transmittance models for narrow bands (satellite sensor channels) in the 13 to 19 ..mu..m spectral region. The models are the result of research efforts of the author in 1971-1972 while on active duty with the US Air Force at the Air Force Global Weather Central (AFGWC). The models were developed for application in studies involving a temperature profiling sensor system carried aboard the satellites of the Defense Meteorological Satellite Program (DMSP), formerly DAPP. Recently, (Lovill et al., 1978; Luther et al., 1981) the models were implemented for studies concerned with methodologies to retrieve total atmospheric column ozone from measurements of newer DMSP Block 5D series satellite sensors with similar channels (see Nichols, 1975).

Weichel, R.L.

1983-10-01T23:59:59.000Z

145

Narrow linewidth picosecond pulsed laser with mega-watt peak power at UV wavelength  

Science Conference Proceedings (OSTI)

We demonstrate a master oscillator power amplifier (MOPA) burst mode laser system to generate 66 ps/402.5 MHz pulses with mega-watt peak power at 355 nm. The seed laser is based on a direct electro-optic modulation of a fiber laser output. A very high extinction ratio (45 dB) has been achieved by using an adaptive bias control. The multi-stage Nd:YAG amplifier system allows a uniformly temporal shaping of macropulses with tunable pulse duration. The light output form the amplifier is converted to 355 nm and over 1 MW UV peak power is obtained when the laser is operating in a 5- s/10-Hz macropulse mode. The laser output has a transform limited spectrum bandwidth with a very narrow linewidth of individual laser mode. The immediate application of the laser system is the laser assisted hydrogen ion beam stripping for the Spallation Neutron Source (SNS).

Liu, Yun [ORNL; Huang, Chunning [ORNL; Deibele, Craig Edmond [ORNL

2013-01-01T23:59:59.000Z

146

Catalyzed Water Oxidation by Solar Irradiation of Band-Gap-Narrowed Semiconductors (Part 2. Overview).  

DOE Green Energy (OSTI)

The objectives of this report are: (1) Investigate the catalysis of water oxidation by cobalt and manganese hydrous oxides immobilized on titania or silica nanoparticles, and dinuclear metal complexes with quinonoid ligands in order to develop a better understanding of the critical water oxidation chemistry, and rationally search for improved catalysts. (2) Optimize the light-harvesting and charge-separation abilities of stable semiconductors including both a focused effort to improve the best existing materials by investigating their structural and electronic properties using a full suite of characterization tools, and a parallel effort to discover and characterize new materials. (3) Combine these elements to examine the function of oxidation catalysts on Band-Gap-Narrowed Semiconductor (BGNSC) surfaces and elucidate the core scientific challenges to the efficient coupling of the materials functions.

Fujita,E.; Khalifah, P.; Lymar, S.; Muckerman, J.T.; Rodriguez, J.

2008-03-18T23:59:59.000Z

147

Catalyzed Water Oxidation by Solar Irradiation of Band-Gap-Narrowed Semiconductors (Part 1. Overview).  

DOE Green Energy (OSTI)

The objectives of this report are: (1) Investigate the catalysis of water oxidation by cobalt and manganese hydrous oxides immobilized on titania or silica nanoparticles, and dinuclear metal complexes with quinonoid ligands in order to develop a better understanding of the critical water oxidation chemistry, and rationally search for improved catalysts. (2) Optimize the light-harvesting and charge-separation abilities of stable semiconductors including both a focused effort to improve the best existing materials by investigating their structural and electronic properties using a full suite of characterization tools, and a parallel effort to discover and characterize new materials. (3) Combine these elements to examine the function of oxidation catalysts on Band-Gap-Narrowed Semiconductor (BGNSC) surfaces and elucidate the core scientific challenges to the efficient coupling of the materials functions.

Fujita,E.; Khalifah, P.; Lymar, S.; Muckerman, J.T.; Rodgriguez, J.

2008-03-18T23:59:59.000Z

148

Line narrowing spectroscopic studies of DNA-carcinogen adducts and DNA-dye complexes  

Science Conference Proceedings (OSTI)

Laser-induced fluorescence line narrowing and non-line narrowing spectroscopic methods were applied to conformational studies of stable DNA adducts of the 7{beta}, 8{alpha}-dihydoxy-9{alpha}, l0{alpha}-epoxy-7,8,9, 10-tetrahydrobenzo[{alpha}]pyrene (anti-BPDE). Stereochemically distinct (+)-trans-, ({minus})-trans-, (+)-cis- and ({minus})-cis adducts of anti-BPDE bound to exocyclic amino group of the central guanine in an 11-mer oligonucleotide, exist in a mixture of conformations in frozen aqueous buffer matrices. The (+)-trans adduct adopts primarily an external conformation with a smaller fraction ( {approximately} 25 %) exists in a partially base-stacked conformation. Both cis adducts were found to be intercalated with significant {pi}-{pi} stacking interactions between the pyrenyl residues and the bases. Conformations of the trans-adduct of (+)-anti -BPDE in 11-mer oligonucleotides were studied as a function of flanking bases. In single stranded form the adduct at G{sub 2} or G{sub 3} (5 ft-flanking, base guanine) adopts a conformation with strong, interaction with the bases. In contrast, the adduct with a 5ft-flanking, thymine exists in a primarily helixexternal conformation. Similar differences were observed in the double stranded oligonucleotides. The nature of the 3ft-flanking base has little influence on the conformational equilibrium of the (+)-trans-anti BPDE-dG adduct. The formation and repair of BPDE-N{sup 2}-dG in DNA isolated from the skin of mice treated topically with benzo[{alpha}]pyrene (BP) was studied. Low-temperature fluorescence spectroscopy of the intact DNA identified the major adduct as (+)-trans-anti-BPDE-N-dG, and the minor adduct fraction consisted mainly of (+)-cis-anti-BPDE-N{sup 2}-dG.

Suh, Myungkoo

1995-12-06T23:59:59.000Z

149

BCS-BEC crossover in atomic Fermi gases with a narrow resonance  

SciTech Connect

We determine the effects on the BCS-BEC crossover of the energy dependence of the effective two-body interaction, which at low energies is determined by the effective range. To describe interactions with an effective range of either sign, we consider a single-channel model with a two-body interaction having an attractive square well and a repulsive square barrier. We investigate the two-body scattering properties of the model, and then solve the Eagles-Leggett equations for the zero temperature crossover, determining the momentum dependent gap and the chemical potential self-consistently. From this we investigate the dependence of the crossover on the effective range of the interaction.

Jensen, L. M. [NORDITA, Blegdamsvej 17, DK-2100, Copenhagen O (Denmark); Department of Physics, Nanoscience Center, University of Jyvaeskylae, P.O. Box 35, FIN-40014 Finland (Finland); Department of Theoretical Physics, Umeaa University, Umeaa, 901 87 (Sweden); Nilsen, H. M. [Center for Mathematics for Applications, P.O. Box 1053, Blindern, NO-0316, Oslo Norway (Norway); Watanabe, Gentaro [NORDITA, Blegdamsvej 17, DK-2100, Copenhagen O (Denmark); Institute of Chemical and Physical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

2006-10-15T23:59:59.000Z

150

Dynamic Heart?Body Simulator  

Science Conference Proceedings (OSTI)

A high?speed electronic analog computer is described which is a useful research tool in the analysis of body?surface voltages produced by a fixed?position

Ernest Frank

1954-01-01T23:59:59.000Z

151

Radiation of Electron in the Field of Plane Light Wave  

SciTech Connect

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

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

2006-02-24T23:59:59.000Z

152

Spectrally narrowed leaky waveguide edge emission and transient electrluminescent dynamics of OLEDs  

SciTech Connect

In summary, there are two major research works presented in this dissertation. The first research project (Chapter 4) is spectrally narrowed edge emission from Organic Light Emitting Diodes. The second project (Chapter 5) is about transient electroluminescent dynamics in OLEDs. Chapter 1 is a general introduction of OLEDs. Chapter 2 is a general introduction of organic semiconductor lasers. Chapter 3 is a description of the thermal evaporation method for OLED fabrication. The detail of the first project was presented in Chapter 4. Extremely narrowed spectrum was observed from the edge of OLED devices. A threshold thickness exists, above which the spectrum is narrow, and below which the spectrum is broad. The FWHM of spectrum depends on the material of the organic thin films, the thickness of the organic layers, and length of the OLED device. A superlinear relationship between the output intensity of the edge emission and the length of the device was observed, which is probably due to the misalignment of the device edge and the optical fiber detector. The original motivation of this research is for organic semiconductor laser that hasn't been realized due to the extremely high photon absorption in OLED devices. Although we didn't succeed in fabricating an electrically pumped organic laser diode, we made a comprehensive research in edge emission of OLEDs which provides valuable results in understanding light distribution and propagation in OLED devices. Chapter 5 focuses on the second project. A strong spike was observed at the falling edge of a pulse, and a long tail followed. The spike was due to the recombination of correlated charge pair (CCP) created by trapped carriers in guest molecules of the recombination zone. When the bias was turned off, along with the decreasing of electric field in the device, the electric field induced quenching decreases and the recombination rate of the CCP increases which result in the spike. This research project provides a profound understanding of the EL dynamics of OLED, and the theoretical model can fit and explain the experiment data quite well. For the edge emission, we focused on the spectrum and the relative intensity of the edge emission. In the future, more research can be done on the comparison of the intensity between the total edge emission and the surface emission which will give us a sense what fraction of light was trapped in the device. Micro structures can be integrated into the OLED such as DFB and DBR, the character of edge emission should be very interesting. For the transient spike, the CCP model can give a good explanation. But in the model, the effect of the electric field change is not included, because from the start point (t=0), we assume the mobility of carriers is a constant. If we consider the details of the change of the electric field, then when turning of the bias, the decrease of the electric field results in decrease of the carrier mobility and the dissociation rate. If we can add the electric field effect into the model, the whole theory will be more convincing.

Zhengqing, Gan

2010-05-16T23:59:59.000Z

153

Hanford whole body counting manual  

SciTech Connect

This document describes the Hanford Whole Body Counting Program as it is administered by Pacific Northwest Laboratory (PNL) in support of the US Department of Energy--Richland Operations Office (DOE-RL) and its Hanford contractors. Program services include providing in vivo measurements of internally deposited radioactivity in Hanford employees (or visitors). Specific chapters of this manual deal with the following subjects: program operational charter, authority, administration, and practices, including interpreting applicable DOE Orders, regulations, and guidance into criteria for in vivo measurement frequency, etc., for the plant-wide whole body counting services; state-of-the-art facilities and equipment used to provide the best in vivo measurement results possible for the approximately 11,000 measurements made annually; procedures for performing the various in vivo measurements at the Whole Body Counter (WBC) and related facilities including whole body counts; operation and maintenance of counting equipment, quality assurance provisions of the program, WBC data processing functions, statistical aspects of in vivo measurements, and whole body counting records and associated guidance documents. 16 refs., 48 figs., 22 tabs.

Palmer, H.E.; Rieksts, G.A.; Lynch, T.P.

1990-06-01T23:59:59.000Z

154

THE BOLOCAM GALACTIC PLANE SURVEY: SURVEY DESCRIPTION AND DATA REDUCTION  

SciTech Connect

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

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

2011-01-15T23:59:59.000Z

155

Peculiarly Narrow SED of GRB 090926B with MAXI and Fermi/GBM  

E-Print Network (OSTI)

The monitor of all-sky X-ray image (MAXI) Gas Slit Camera (GSC) on the International Space Station (ISS) detected a gamma-ray burst (GRB) on 2009, September 26, GRB\\,090926B. This GRB had extremely hard spectra in the X-ray energy range. Joint spectral fitting with the Gamma-ray Burst Monitor on the Fermi Gamma-ray Space Telescope shows that this burst has peculiarly narrow spectral energy distribution and is represented by Comptonized blackbody model. This spectrum can be interpreted as photospheric emission from the low baryon-load GRB fireball. Calculating the parameter of fireball, we found the size of the base of the flow $r_0 = (4.3 \\pm 0.9) \\times 10^{9} \\, Y^{\\prime \\, -3/2}$ cm and Lorentz factor of the plasma $\\Gamma = (110 \\pm 10) \\, Y^{\\prime \\, 1/4}$, where $Y^{\\prime}$ is a ratio between the total fireball energy and the energy in the blackbody component of the gamma-ray emission. This $r_0$ is factor of a few larger, and the Lorentz factor of 110 is smaller by also factor of a few than other bu...

Serino, Motoko; Kawai, Nobuyuki; Nakagawa, Yujin E; Ueda, Yoshihiro; Mihara, Tatehiro; Nakahira, Satoshi; Eguchi, Satoshi; Hiroi, Kazuo; Ishikawa, Masaki; Isobe, Naoki; Kimura, Masashi; Kitayama, Hiroki; Kohama, Mitsuhiro; Matsumura, Takanori; Matsuoka, Masaru; Morii, Mikio; Nakajima, Motoki; Negoro, Hitoshi; Shidatsu, Megumi; Sootome, Tetsuya; Sugimori, Kousuke; Sugizaki, Mutsumi; Suwa, Fumitoshi; Toizumi, Takahiro; Tomida, Hiroshi; Tsuboi, Yohko; Tsunemi, Hiroshi; Ueno, Shiro; Usui, Ryuichi; Yamamoto, Takayuki; Yamaoka, Kazutaka; Yamauchi, Makoto; Yamazaki, Kyohei

2011-01-01T23:59:59.000Z

156

Narrow Radiative Recombination Continua: A Signature of Ions Crossing the Contact Discontinuity of Astrophysical Shocks  

E-Print Network (OSTI)

X-rays from planetary nebulae (PNs) are believed to originate from a shock driven into the fast stellar wind (v ~ 1000 km/s) as it collides with an earlier circumstellar slow wind (v ~ 10 km/s). In theory, the shocked fast wind (hot bubble) and the ambient cold nebula can remain separated by magnetic fields along a surface referred to as the contact discontinuity (CD) that inhibits diffusion and heat conduction. The CD region is extremely difficult to probe directly owing to its small size and faint emission. This has largely left the study of CDs, stellar-shocks, and the associated micro-physics in the realm of theory. This paper presents spectroscopic evidence for ions from the hot bubble (kT ~ 100 eV) crossing the CD and penetrating the cold nebular gas (kT ~ 1 eV). Specifically, a narrow radiative recombination continuum (RRC) emission feature is identified in the high resolution X-ray spectrum of the PN BD+30 3639 indicating bare C VII ions are recombining with cool electrons at kT_e=1.7+-1.3 eV. An uppe...

Nordon, Raanan; Soker, Noam; Kastner, Joel H; Yu, Young Sam

2009-01-01T23:59:59.000Z

157

THE PHYSICAL CONDITIONS OF THE INTRINSIC N V NARROW ABSORPTION LINE SYSTEMS OF THREE QUASARS  

SciTech Connect

We employ detailed photoionization models to infer the physical conditions of intrinsic narrow absorption line systems found in high-resolution spectra of three quasars at z = 2.6-3.0. We focus on a family of intrinsic absorbers characterized by N V lines that are strong relative to the Ly{alpha} lines. The inferred physical conditions are similar for the three intrinsic N V absorbers, with metallicities greater than 10 times the solar value (assuming a solar abundance pattern), and with high ionization parameters (log U {approx} 0). Thus, we conclude that the unusual strength of the N V lines results from a combination of partial coverage, a high ionization state, and high metallicity. We consider whether dilution of the absorption lines by flux from the broad emission line region can lead us to overestimate the metallicities and we find that this is an unlikely possibility. The high abundances that we infer are not surprising in the context of scenarios in which metal enrichment takes place very early on in massive galaxies. We estimate that the mass outflow rate in the absorbing gas (which is likely to have a filamentary structure) is less than a few M{sub sun} yr{sup -1} under the most optimistic assumptions, although it may be embedded in a much hotter, more massive outflow.

Wu Jian; Charlton, Jane C.; Misawa, Toru; Eracleous, Michael [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Ganguly, Rajib, E-mail: jwu@astro.psu.ed, E-mail: misawatr@shinshu-u.ac.j [Department of Computer Science, Engineering, and Physics, University of Michigan-Flint, 213 Murchie Science Building, 303 Kearsley Street, Flint, MI 48502 (United States)

2010-10-20T23:59:59.000Z

158

Compact Probe for Power Detection from the Narrow Side of the Waveguide  

SciTech Connect

Phased array antennas with high directivity have a variety of applications. One of their applications is in RF heating for magnetically confined plasma fusion research. Among these RF heating schemes, waveguide arrays with careful phase control on each waveguide can act as a phased array antenna to deliver megawatts of power for heating fusion plasmas in the lower-hybrid range of frequencies (1 GHz-10 GHz). In order to achieve compactness, it is common to stack reduced height waveguide together to form the waveguide array. As long as the delivered power does not cause arcing in the waveguide, the waveguide height can be quite small. Due to this confined space in a stack of reduced height waveguides, power detection of the incident and reflected wave in the reduced height waveguide is extremely difficult. A new compact probe, which employs current loops, to monitor the incident and reflected wave from the narrow side of the reduced height waveguide has been developed. Its theory and performance will be reported in this paper.

C.C. Kung; S. Bernabei; J. Gumbas; N. Greenough; E. Fredd; J.R. Wilson; J. Hosea

2004-05-07T23:59:59.000Z

159

METHOD OF MAKING REFRACTORY BODIES  

DOE Patents (OSTI)

A method is given for the manufacture of silicon carbide bodies that are characterized by high density, high purity, and superior resistance to oxidative deterioration. Dense silicon bodies are obtained by a process in which granular silicon carbide, a carbonizable material, and a carbonaceous material are mixed together, the mixture is shaped as desired, and then the shape is fired in the presence of more than the stoichiometric amount of silicon. The carbonizable material preferably includes a temporary binder that is set before the firing step to hold the mix in shape for firing.

Andersen, J.C.

1960-05-31T23:59:59.000Z

160

body  

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

9 9 JULY 1997 Control of Nitrogen Oxide Emissions: Selective Catalytic Reduction (SCR) TOPICAL REPORT NUMBER 9 A report on a project conducted jointly under a cooperative agreement between: The U.S. Department of Energy and Southern Company Services, Inc. JULY 1997 Control of Nitrogen Oxide Emissions: Selective Catalytic Reduction (SCR) Cover image: Photo of SCR Project at Plant Crist. Preparation and printing of this document conforms to the general funding provisions of a cooperative agreement between Southern Company Services and the U.S. Department of Energy. The funding contribution of the industrial participant permitted inclusion of multicolored artwork and photographs at no additional expense to the U.S. Government. Control of Nitrogen Oxide Emissions: Selective Catalytic Reduction (SCR)

Note: This page contains sample records for the topic "narrow body planes" 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

Comparison of Narrow Bipolar Events with Ordinary Lightning as Proxies for the Microwave-Radiometry Ice-Scattering Signature  

Science Conference Proceedings (OSTI)

The narrow bipolar event (NBE) is a unique lightning discharge that has a short (10 ?s) overall duration, lacks a prior leader phase, and produces too little light output to be visible by optical lightning detectors on satellites. NBEs thus have ...

Abram R. Jacobson; William Boeck; Christopher Jeffery

2007-04-01T23:59:59.000Z

162

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

E-Print Network (OSTI)

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

163

Holder for rotating glass body  

DOE Patents (OSTI)

A device is provided for holding and centering a rotating glass body such as a rod or tube. The device includes a tubular tip holder which may be held in a lathe chuck. The device can utilize a variety of centering tips each adapted for a particular configuration, such as a glass O-ring joint or semi-ball joint.

Kolleck, Floyd W. (Clarendon Hills, IL)

1978-04-04T23:59:59.000Z

164

New Accreditation Program for Body Armor Testing ...  

Science Conference Proceedings (OSTI)

New Accreditation Program for Body Armor Testing Laboratories. From NIST Tech Beat: December 12, 2007. ...

2012-04-06T23:59:59.000Z

165

KILOPARSEC-SCALE RADIO STRUCTURES IN NARROW-LINE SEYFERT 1 GALAXIES  

SciTech Connect

We report the finding of kiloparsec (kpc)-scale radio structures in three radio-loud narrow-line Seyfert 1 (NLS1) galaxies from the Faint Images of the Radio Sky at Twenty-centimeters of the Very Large Array, which increases the number of known radio-loud NLS1s with kpc-scale structures to six, including two {gamma}-ray-emitting NLS1s (PMN J0948+0022 and 1H 0323+342) detected by the Fermi Gamma-ray Space Telescope. The detection rate of extended radio emissions in NLS1s is lower than that in broad-line active galactic nuclei (AGNs) with a statistical significance. We found both core-dominated (blazar-like) and lobe-dominated (radio-galaxy-like) radio structures in these six NLS1s, which can be understood in the framework of the unified scheme of radio-loud AGNs that considers radio galaxies as non-beamed parent populations of blazars. Five of the six NLS1s have (1) extended radio luminosities suggesting jet kinetic powers of {approx}> 10{sup 44} erg s{sup -1}, which is sufficient to make jets escape from hosts' dense environments; (2) black holes of {approx}> 10{sup 7} M {sub Sun }, which can generate the necessary jet powers from near-Eddington mass accretion; and (3) two-sided radio structures at kpc scales, requiring expansion rates of {approx}0.01c-0.3c and kinematic ages of {approx}> 10{sup 7} years. On the other hand, most typical NLS1s would be driven by black holes of {approx}< 10{sup 7} M {sub Sun} in a limited lifetime of {approx}10{sup 7} years. Hence, the kpc-scale radio structures may originate in a small window of opportunity during the final stage of the NLS1 phase just before growing into broad-line AGNs.

Doi, Akihiro; Kino, Motoki [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuou-ku, Sagamihara, Kanagawa 252-5210 (Japan); Nagira, Hiroshi [Graduate School of Science and Engineering, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512 (Japan); Kawakatu, Nozomu [Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 (Japan); Nagai, Hiroshi [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Asada, Keiichi, E-mail: akihiro.doi@vsop.isas.jaxa.jp [Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan (China)

2012-11-20T23:59:59.000Z

166

Very narrow band model calculations of atmospheric fluxes and cooling rates  

SciTech Connect

A new very narrow band model (VNBM) approach has been developed and incorporated into the MODTRAN atmospheric transmittance-radiance code. The VNBM includes a computational spectral resolution of 1 cm{sup {minus}1}, a single-line Voigt equivalent width formalism that is based on the Rodgers-Williams approximation and accounts for the finite spectral width of the interval, explicit consideration of line tails, a statistical line overlap correction, a new sublayer integration approach that treats the effect of the sublayer temperature gradient on the path radiance, and the Curtis-Godson (CG) approximation for inhomogeneous paths. A modified procedure for determining the line density parameter 1/d is introduced, which reduces its magnitude. This results in a partial correction of the VNBM tendency to overestimate the interval equivalent widths. The standard two parameter CG approximation is used for H{sub 2}O and CO{sub 2}, while the Goody three parameter CG approximation is used for O{sub 3}. Atmospheric flux and cooling rate predictions using a research version of MODTRAN, MODR, are presented for H{sub 2}O (with and without the continuum), CO{sub 2}, and O{sub 3} for several model atmospheres. The effect of doubling the CO{sub 2} concentration is also considered. These calculations are compared to line-by-line (LBL) model calculations using the AER, GLA, GFDL, and GISS codes. The MODR predictions fall within the spread of the LBL results. The effects of decreasing the band model spectral resolution are illustrated using CO{sub 2} cooling rate and flux calculations. 36 refs., 18 figs., 1 tab.

Bernstein, L.S.; Berk, A.; Acharya, P.K.; Robertson, D.C. [Spectral Sciences, Inc., Burlington, MA (United States)] [and others] [Spectral Sciences, Inc., Burlington, MA (United States); and others

1996-10-15T23:59:59.000Z

167

Essential Body of Knowledge (EBK) October 2011  

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

Essential Body of Knowledge (EBK) Essential Body of Knowledge (EBK) October 2011 1 U.S. DEPARTMENT OF ENERGY Essential Body of Knowledge (EBK) A Competency and Functional Framework For Cyber Security Workforce Development Office of the Chief Information Officer Office of the Associate CIO for Cyber Security October 2011 DOE Essential Body of Knowledge (EBK) October 2011 2 Table of Contents Executive Summary ...............................................................................................................4 DOE Essential Body of Knowledge (EBK) .........................................................................5 1.1 Data Security ..............................................................................................................6

168

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

Science Conference Proceedings (OSTI)

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

Rima Guidara; Shahram Hosseini; Yannick Deville

2009-11-01T23:59:59.000Z

169

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

Science Conference Proceedings (OSTI)

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

Nobutada Ohno; Masatoshi Tsuda; Takafumi Kamei

2013-04-01T23:59:59.000Z

170

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

E-Print Network (OSTI)

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

Shinji Ejiri; Yasuhiko Shinno; Hiroshi Yoneyama

2013-11-24T23:59:59.000Z

171

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

Science Conference Proceedings (OSTI)

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

Zhang Guangyun; Lan Peng; Lu Nianli

2011-01-01T23:59:59.000Z

172

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

Science Conference Proceedings (OSTI)

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

Isaac M. Held; Vitaly D. Larichev

1996-04-01T23:59:59.000Z

173

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

Science Conference Proceedings (OSTI)

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

Gabriele Milani; Antonio Tralli

2011-01-01T23:59:59.000Z

174

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

Science Conference Proceedings (OSTI)

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

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

2013-10-01T23:59:59.000Z

175

Essential Body of Knowledge (EBK)  

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

The Office of the Chief Information Officer (OCIO) utilized DOE cyber security policy, industry best practices and lessons learned, and comprehensive internal needs assessments to identify fundamental cyber security functional roles and associated responsibilities. In addition, core competencies were identified that represent the core skill set needed by cyber security professionals to adequately fulfill their functional roles. This collective information was further used to define the Enterprise Essential Body of Knowledge (EBK).

176

Photon emission near superconducting bodies  

Science Conference Proceedings (OSTI)

We study the photon emission due to a magnetic spin-flip transition of a two-level atom in the vicinity of a dielectric body such as a normal conducting metal or a superconductor. For temperatures below the transition temperature T{sub c} of a superconductor, the corresponding spin-flip lifetime is boosted by several orders of magnitude as compared to the case of a normal conducting body. Numerical results of an exact formulation are also compared to a previously derived approximative analytical expression for the spin-flip lifetime, and we find excellent agreement. We present results on how the spin-flip lifetime depends on the temperature T of a superconducting body as well as its thickness H. Finally, we study how nonmagnetic impurities as well as possible Eliashberg strong-coupling effects influence the spin-flip rate. It is found that nonmagnetic impurities as well as strong-coupling effects have no dramatic impact on the spin-flip lifetime.

Skagerstam, Bo-Sture K.; Rekdal, Per Kristian [Department of Physics, The Norwegian University of Science and Technology, N-7491 Trondheim (Norway)

2007-11-15T23:59:59.000Z

177

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

DOE Patents (OSTI)

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

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

2013-05-21T23:59:59.000Z

178

Three orders of magnitude cavity-linewidth narrowing by slow light in a rare-earth-ion-doped crystal cavity  

E-Print Network (OSTI)

Three orders of magnitude cavity-linewidth narrowing in a rare-earth-ion-doped crystal cavity, induced by strong intra-cavity dispersion caused by off-resonant interaction with dopant ions is demonstrated. The strong dispersion is created by semi-permanent but rapidly reprogrammable changes of the rare earth absorption profiles using optical pumping techniques. Several cavity modes are shown within the spectral transmission window. Potential applications are discussed.

Sabooni, Mahmood; Rippe, Lars; Krll, Stefan

2013-01-01T23:59:59.000Z

179

Ground states in complex bodies  

E-Print Network (OSTI)

A unified framework for analyzing the existence of ground states in wide classes of elastic complex bodies is presented here. The approach makes use of classical semicontinuity results, Sobolev mappinngs and Cartesian currents. Weak diffeomorphisms are used to represent macroscopic deformations. Sobolev maps and Cartesian currents describe the inner substructure of the material elements. Balance equations for irregular minimizers are derived. A contribution to the debate about the role of the balance of configurational actions follows. After describing a list of possible applications of the general results collected here, a concrete discussion of the existence of ground states in thermodynamically stable quasicrystals is presented at the end.

Paolo Maria Mariano; Giuseppe Modica

2008-02-11T23:59:59.000Z

180

Metal stub and ceramic body electrode assembly  

DOE Patents (OSTI)

An electrically conductive ceramic electrode body having an opening therein is threadably engaged with a metal stub having at least a slot therein to provide space for expansion of the stub without damage to the electrode body. 3 figs.

Rolf, R.L.

1984-05-22T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

New exact solution of Euler's equations (rigid body dynamics) in the case of rotation over the fixed point  

E-Print Network (OSTI)

A new exact solution of Euler equations (rigid body dynamics) is presented here. All the components of angular velocity of rigid body for such a solution differ from both the cases of symmetric rigid rotor (which has two equal moments of inertia: Lagrange or Kovalevskaya case), and from the Euler case when all the applied torques are zero, or from other well-known particular cases. The key features are the next: - the center of masses of rigid body is assumed to be located at meridional plane along the main principal axis of inertia of rigid body, - besides, the principal moments of inertia are assumed to satisfy to a simple algebraic equality. Also there is a restriction at choosing of initial conditions. Such a solution is also proved to satisfy to Euler-Poinsot equations, including invariants of motion and additional Euler invariant (square of the vector of angular momentum is a constant). So, such a solution is a generalization of Euler case.

Sergey V. Ershkov

2011-01-09T23:59:59.000Z

182

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

E-Print Network (OSTI)

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

B. Rutily; J. Bergeat; L. Chevallier

2006-01-16T23:59:59.000Z

183

Deformable human body model development  

SciTech Connect

This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). A Deformable Human Body Model (DHBM) capable of simulating a wide variety of deformation interactions between man and his environment has been developed. The model was intended to have applications in automobile safety analysis, soldier survivability studies and assistive technology development for the disabled. To date, we have demonstrated the utility of the DHBM in automobile safety analysis and are currently engaged in discussions with the U.S. military involving two additional applications. More specifically, the DHBM has been incorporated into a Virtual Safety Lab (VSL) for automobile design under contract to General Motors Corporation. Furthermore, we have won $1.8M in funding from the U.S. Army Medical Research and Material Command for development of a noninvasive intracranial pressure measurement system. The proposed research makes use of the detailed head model that is a component of the DHBM; the project duration is three years. In addition, we have been contacted by the Air Force Armstrong Aerospace Medical Research Laboratory concerning possible use of the DHBM in analyzing the loads and injury potential to pilots upon ejection from military aircraft. Current discussions with Armstrong involve possible LANL participation in a comparison between DHBM and the Air Force Articulated Total Body (ATB) model that is the current military standard.

Wray, W.O.; Aida, T.

1998-11-01T23:59:59.000Z

184

A survey on wireless body area networks  

Science Conference Proceedings (OSTI)

The increasing use of wireless networks and the constant miniaturization of electrical devices has empowered the development of Wireless Body Area Networks (WBANs). In these networks various sensors are attached on clothing or on the body or even implanted ... Keywords: MAC, Routing, Wireless body area networks

Benot Latr; Bart Braem; Ingrid Moerman; Chris Blondia; Piet Demeester

2011-01-01T23:59:59.000Z

185

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

E-Print Network (OSTI)

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

Bico, Jose

186

A Radiative Upper Boundary Condition Adapted for f-Plane Models  

Science Conference Proceedings (OSTI)

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

Stephen T. Garner

1986-08-01T23:59:59.000Z

187

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

E-Print Network (OSTI)

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

J. Wu

2001-01-01T23:59:59.000Z

188

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

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

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

189

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

E-Print Network (OSTI)

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

B. Rutily; L. Chevallier; J. Bergeat

2006-01-16T23:59:59.000Z

190

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

Science Conference Proceedings (OSTI)

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

Volkmar Wirth

1998-10-01T23:59:59.000Z

191

On the Motion of Isolated Lenses on a Beta-Plane  

Science Conference Proceedings (OSTI)

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

Peter D. Killworth

1983-03-01T23:59:59.000Z

192

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

Science Conference Proceedings (OSTI)

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

Lee E. Branscome

1983-10-01T23:59:59.000Z

193

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

Science Conference Proceedings (OSTI)

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

Georgi G. Sutyrin; Glenn R. Flierl

1994-03-01T23:59:59.000Z

194

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

E-Print Network (OSTI)

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

195

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

E-Print Network (OSTI)

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

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

2006-01-01T23:59:59.000Z

196

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

E-Print Network (OSTI)

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

Bastien, Christopher J

2008-01-01T23:59:59.000Z

197

Long Atmospheric Waves and the Polar-Plane Approximation to the Earths Spherical Geometry  

Science Conference Proceedings (OSTI)

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

Alison F. C. Bridger; Duane E. Stevens

1980-03-01T23:59:59.000Z

198

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

Science Conference Proceedings (OSTI)

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

Lazaros Oreopoulos; Robert F. Cahalan; Steven Platnick

2007-10-01T23:59:59.000Z

199

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

SciTech Connect

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

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

1992-05-01T23:59:59.000Z

200

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

E-Print Network (OSTI)

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

Eva, Charles Almond

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

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

E-Print Network (OSTI)

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

Ababneh, Mohammed

2012-01-01T23:59:59.000Z

202

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

E-Print Network (OSTI)

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

Pascaleff, James Thomas

2011-01-01T23:59:59.000Z

203

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

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

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

204

METHOD OF MAKING FUEL BODIES  

DOE Patents (OSTI)

An improved method of making a fuel body containing carbon for reactors is described. Carbides of uranium and thorium having a particle size of from 100 to 500 microns are mixed with carbon having a particle size that will pass a 200 mesh screen but be retained by a 325 mesh screen, and 10 per cent by weight pitch. The mixture is heated to a temperature of about 700 to 900 deg C, at which point bonding is effected while maintaining it under mechanical pressure of over 3,000 pounds per square inch. The entire compact is heated to a uniform temperature during the process, preferably by electrical resistance of the compact itself. (AEC)

Goeddel, W.V.; Simnad, M.T.

1962-04-24T23:59:59.000Z

205

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

Science Conference Proceedings (OSTI)

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

Michael Harrison

2013-04-01T23:59:59.000Z

206

Computation of VLF response over half-plane and wedge models  

SciTech Connect

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

Olsson, O.

1983-02-01T23:59:59.000Z

207

Investigation of mechanisms of multimode emission from double-heterostructure AlGaAs injection lasers with narrow stripe contacts  

SciTech Connect

An investigation was made of the spectral characteristics of planar stripe (contact width 6--8 ..mu..) lasers made of AlGaAs heterostructures. The steady-state emission spectrum could be of multimode type because of the high level of spontaneous emission in the lasing mode. The spectrum then became narrower on increase in the power and in the limit changed to the single-mode form. However, in the presence of self-modulation processes the multimode nature of the emission spectrum could be explained by a theory of transient effects and in this case the width of the spectrum increased on increase in the power.

Bessonov, Y.L.; Kurlenkov, S.S.; Morozov, V.N.; Sapozhnikov, S.M.; Thai, C.t.; Shidlovskii, V.R.

1985-02-01T23:59:59.000Z

208

Observation of coherently enhanced tunable narrow-band terahertz transition radiation from a relativistic sub-picosecond electron bunch train  

SciTech Connect

We experimentally demonstrate the production of narrow-band ({delta}f/f{approx_equal}20% at f{approx_equal}0.5THz) transition radiation with tunable frequency over [0.37, 0.86] THz. The radiation is produced as a train of sub-picosecond relativistic electron bunches transits at the vacuum-aluminum interface of an aluminum converter screen. The bunch train is generated via a transverse-to-longitudinal phase space exchange technique. We also show a possible application of modulated beams to extend the dynamical range of a popular bunch length diagnostic technique based on the spectral analysis of coherent radiation.

Piot, P.; Maxwell, T. J. [Northern Illinois Center for Accelerator and Detector Development and Department of Physics, Northern Illinois University, DeKalb, Illinois 60115 (United States); Accelerator Physics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Sun, Y.-E [Accelerator Physics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Ruan, J.; Lumpkin, A. H.; Thurman-Keup, R. [Accelerator Division, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Rihaoui, M. M. [Northern Illinois Center for Accelerator and Detector Development and Department of Physics, Northern Illinois University, DeKalb, Illinois 60115 (United States)

2011-06-27T23:59:59.000Z

209

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

Science Conference Proceedings (OSTI)

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

2013-10-24T23:59:59.000Z

210

Radial wave thermoacoustic engines: Theory and examples for refrigerators and high?gain narrow?bandwidth photoacoustic spectrometers  

Science Conference Proceedings (OSTI)

A theoretical analysis of radial wave thermoacoustic engines in cylindrical resonators is developed. Impedance and pressure translation equations are presented for open sections of the resonator and for heat exchangers. Coupled first?order differential equations are given for pressure and impedance in the temperature gradient supporting engine section (stack). These quantities are used to calculate heat and work flows and to predict engine performance. Theory and design of a variable quality factor resonator for enhanced photoacoustic spectroscopy are presented. The short stack approximation is developed for the radial geometry and is used along with plane?wave equations to compare refrigerator performance for these two geometries. Results of the comparison are that engines in the plane?wave geometry are better overall refrigerators when maximizing the coefficient of performance and cooling capacity together.

W. Patrick Arnott; Richard Raspet; Hans Moosmller

1996-01-01T23:59:59.000Z

211

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

Science Conference Proceedings (OSTI)

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

Mary C. Barth

1994-07-01T23:59:59.000Z

212

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

Science Conference Proceedings (OSTI)

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

Frank Roux; Virginie Marcal; Danile Hauser

1993-04-01T23:59:59.000Z

213

A Space-Filling Algorithm to Extrapolate Narrow-Swath Instantaneous TRMM Microwave Rain-Rate Estimates Using Thermal IR Imagery  

Science Conference Proceedings (OSTI)

A space-filling algorithm (SFA) based on 2D spectral estimation techniques was developed to extrapolate the spatial domain of the narrow-swath near-instantaneous rain-rate estimates from Tropical Rainfall Measuring Mission (TRMM) precipitation ...

Ana P. Barros; Kun Tao

2008-11-01T23:59:59.000Z

214

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

Science Conference Proceedings (OSTI)

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

Peter V. Hobbs; P. Ola G. Persson

1982-02-01T23:59:59.000Z

215

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

E-Print Network (OSTI)

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

Nichols, Kristin

2013-05-01T23:59:59.000Z

216

Narrow groove gas tungsten arc welding of ASTM A508 Class 4 steel for improved toughness properties  

Science Conference Proceedings (OSTI)

Welding of heavy section steel has traditionally used the automatic submerged arc welding (ASAW) process because of the high deposition rates achievable. However, the properties, particularly fracture toughness, of the weld are often inferior when compared to base material. This project evaluated the use of narrow groove gas tungsten arc welding (GTAW) to improve weld material properties. The welding procedures were developed for ASTM A508 Class 4 base material using a 1% Ni filler material complying to AWS Specification A.23-90-EF3-F3-N. A narrow groove joint preparation was used in conjunction with the GTAW process so competitive fabrication rates could be achieved when compared to the ASAW process. Weld procedures were developed to refine weld substructure to achieve better mechanical properties. Two heaters of weld wire were used to examine the effects of minor filler metal chemistry differences on weld mechanical properties. Extensive metallographic evaluations showed excellent weld quality with a refined microstructure. Chemical analysis of the weld metal showed minimal weld dilution by the base metal. Mechanical testing included bend and tensile tests to ensure weld quality and strength. A Charpy impact energy curve versus temperature and fracture toughness curve versus temperature were developed for each weld wire heat. Results of fracture toughness and Charpy impact testing indicated an improved transition temperature closer to that of the base material properties.

Penik, M.A. Jr. [Rensselaer Polytechnic Inst., Troy, NY (United States)

1997-04-01T23:59:59.000Z

217

Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948 0022 in March-July 2009  

SciTech Connect

Following the recent discovery of {gamma} rays from the radio-loud narrow-line Seyfert 1 galaxy PMN J0948+0022 (z = 0.5846), we started a multiwavelength campaign from radio to {gamma} rays, which was carried out between the end of 2009 March and the beginning of July. The source displayed activity at all the observed wavelengths: a general decreasing trend from optical to {gamma}-ray frequencies was followed by an increase of radio emission after less than two months from the peak of the {gamma}-ray emission. The largest flux change, about a factor of about 4, occurred in the X-ray band. The smallest was at ultraviolet and near-infrared frequencies, where the rate of the detected photons dropped by a factor 1.6-1.9. At optical wavelengths, where the sampling rate was the highest, it was possible to observe day scale variability, with flux variations up to a factor of about 3. The behavior of PMN J0948+0022 observed in this campaign and the calculated power carried out by its jet in the form of protons, electrons, radiation, and magnetic field are quite similar to that of blazars, specifically of flat-spectrum radio quasars. These results confirm the idea that radio-loud narrow-line Seyfert 1 galaxies host relativistic jets with power similar to that of average blazars.

Abdo, A.A.; /Naval Research Lab, Wash., D.C. /Federal City Coll.; Ackermann, M.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Ajello, M.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Axelsson, M.; /Stockholm U. /Stockholm U., OKC; Baldini, L.; /INFN, Pisa; Ballet, J.; /DAPNIA, Saclay; Barbiellini, G.; /INFN, Trieste /Trieste U.; Bastieri, D.; /INFN, Padua /Padua U.; Baughman, B.M.; /Ohio State U.; Bechtol, K.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Bellazzini, R. /INFN, Pisa; Berenji, B.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Bloom, E.D.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Bonamente, E. /INFN, Perugia /Perugia U.; Borgland, A.W.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Bregeon, J.; /INFN, Pisa; Brez, A.; /INFN, Pisa; Brigida, M.; /Bari U. /INFN, Bari; Bruel, P.; /Ecole Polytechnique; Burnett, T.H.; /Washington U., Seattle; Caliandro, G.A.; /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /IASF, Milan /Milan Polytechnic /DAPNIA, Saclay /ASDC, Frascati /INFN, Perugia /Perugia U. /NASA, Goddard /NASA, Goddard /CSST, Baltimore /SISSA, Trieste /Naval Research Lab, Wash., D.C. /George Mason U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /INFN, Perugia /Perugia U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Montpellier U. /Garching, Max Planck Inst., MPE /Stockholm U. /Stockholm U., OKC /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /ASDC, Frascati /INFN, Trieste /Bari U. /INFN, Bari /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /CENBG, Gradignan /CENBG, Gradignan /Montpellier U. /Bari U. /INFN, Bari /Ecole Polytechnique /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. /Ecole Polytechnique /Brera Observ. /INFN, Trieste /Bonn, Max Planck Inst., Radioastron. /Hiroshima U. /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; /more authors..

2012-03-29T23:59:59.000Z

218

HST STIS Ultraviolet Spectral Evidence of Outflow in Extreme Narrow-line Seyfert 1 Galaxies: II. Modeling and Interpretation  

E-Print Network (OSTI)

(Abridged) This is the second of two papers on the UV emission-line properties of Narrow-line Seyfert 1 Galaxies (NLS1s). In the first paper, HST STIS spectra from two extreme NLS1s, IRAS 13224-3809 and 1H 0707-495, were analyzed in detail. In this paper, we present modeling intended to explore the physical conditions of the line-emitting gas. Photoionization modeling using Cloudy was conducted for the broad, blueshifted wind component and the narrow, symmetric, rest-wavelength-centered disk component of the lines separately. For the wind component, a broad range of ionizing flux, column density, density, covering fraction, and a limited range of continuum shape and metallicity were explored. A figure of merit was used to quantitatively evaluate the results of the simulations. We found three minima of the figure of merit in parameter space. We favor the solution characterized by an X-ray weak continuum, metallicity enhanced by a factor of 5 and nitrogen enhanced by a factor of 10 over solar, a small column de...

Leighly, K M

2004-01-01T23:59:59.000Z

219

HST STIS Ultraviolet Spectral Evidence for Outflow in Extreme Narrow-line Seyfert 1 Galaxies: I. Data and Analysis  

E-Print Network (OSTI)

We present HST STIS observations of two extreme NLS1s, IRAS 13224-3809 and 1H 0707-495. The spectra are characterized by very blue continua, broad, strongly blueshifted high-ionization lines (including \\ion{C}{4} and \\ion{N}{5}), and narrow, symmetric intermediate- (including \\ion{C}{3}], \\ion{Si}{3}], \\ion{Al}{3}) and low-ionization (e.g., \\ion{Mg}{2}) lines centered at their rest wavelengths. The emission-line profiles suggest that the high-ionization lines are produced in a wind, and the intermediate- and low-ionization lines are produced in low-velocity gas associated with the accretion disk or base of the wind. In this paper, we present the analysis of the spectra from these two objects; in a companion paper we present photoionization analysis and a toy dynamical model for the wind. The highly asymmetric profile of \\ion{C}{4} suggests that it is dominated by emission from the wind, so we develop a template for the wind from the \\ion{C}{4} line. We model the bright emission lines in the spectra using a combination of this template, and a narrow, symmetric line centered at the rest wavelength. We also analyzed a comparison sample of HST spectra from 14 additional NLS1s, and construct a correlation matrix of emission line and continuum properties. A number of strong correlations were observed, including several involving the asymmetry of the \\ion{C}{4} line.

Karen M. Leighly; John R. Moore

2004-02-19T23:59:59.000Z

220

Complex bodies with memory: linearized setting  

E-Print Network (OSTI)

The mechanics of complex bodies with memory effects is discussed in linearized setting. The attention is focused on the characterization of free energies in terms of minimum work and maximum recoverable work in the bulk and along a discontinuity surface endowed with its own surface energy, a surface internal to the body. To this aim, use is made of techniques proposed by Del Piero. Consequences of the Clausius-Duhem inequality are investigated for complex bodies with instantaneous linear elastic response.

Paolo Maria Mariano; Paolo Paoletti

2008-05-28T23:59:59.000Z

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


221

Liquid Desiccant Drying of Thermoreversibly Gelcast Bodies  

Science Conference Proceedings (OSTI)

Presentation Title, Liquid Desiccant Drying of Thermoreversibly Gelcast Bodies. Author(s), Noah O Shanti, Katherine T Faber. On-Site Speaker (Planned), Noah...

222

Media Kit 2014 Body. Mind. Inspiration.  

E-Print Network (OSTI)

THE TRUTH ABOUT KIDS AND PORN PHOTO I.D. MY MOTHER AND THE PRINCE YUMI STYNES I QUITE LIKE MY BODY GORGEOUS

Peters, Richard

223

Method of producing .beta.-spodumene bodies  

DOE Patents (OSTI)

Beta-spodumene bodies and method of preparing the bodies that involves providing a uniform plastic batch of inorganic raw materials, organic binder, and vehicle, wherein the inorganic raw materials are composed of, in percent by weight, about 75% to 95% minerals, and about 5% to 25% glass. The batch is formed into a green body that is fired to produce a body composed substantially of beta-spodumene, and having a thermal expansion coefficient of <10.times.10.sup.-7 /.degree.C.(0-800.degree. C.), and a strength of .gtoreq.4 Ksi.

Chyung, Kenneth (Painted Post, NY); Day, J. Paul (Big Flats, NY); Holleran, Louis M. (Big Flats, NY); Olszewski, Anthony R. (Bath, NY)

1999-01-01T23:59:59.000Z

224

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

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

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

225

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

E-Print Network (OSTI)

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

Michel Destrade

2013-06-02T23:59:59.000Z

226

Arbitrary body segmentation in static images  

Science Conference Proceedings (OSTI)

In this paper, a novel method for segmenting arbitrary human body in static images is proposed. With the body probability map obtained by the pictorial structure model, we develop a superpixel based EM-like algorithm to refine the map, which can then ... Keywords: l1 based graph cuts, Pictorial structure, Superpixel based EM algorithm

Shifeng Li; Huchuan Lu; Lei Zhang

2012-09-01T23:59:59.000Z

227

Maintaining ideal body weight counseling sessions  

SciTech Connect

The purpose of this program is to provide employees with the motivation, knowledge and skills necessary to maintain ideal body weight throughout life. The target audience for this program, which is conducted in an industrial setting, is the employee 40 years of age or younger who is at or near his/her ideal body weight.

Brammer, S.H.

1980-10-09T23:59:59.000Z

228

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

E-Print Network (OSTI)

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

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

2009-01-01T23:59:59.000Z

229

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

SciTech Connect

Solid-explosive plane-wave lenses 1", 2" and 4" in diameter have been mass-produced from components pressed-to-shape with aluminum dies. The method used to calculate the contour between the solid plane-wave lens components pressed-to-shape with the dies is explained. The steps taken to press, machine, and assemble the lenses are described. The method of testing the lenses, the results of those tests, and the corrections to the dies are reviewed. The work on the ", 8", and 12" diameter lenses is also discussed.

Olinger, B.

2007-11-01T23:59:59.000Z

230

HST STIS Ultraviolet Spectral Evidence of Outflow in Extreme Narrow-line Seyfert 1 Galaxies: II. Modeling and Interpretation  

E-Print Network (OSTI)

We present modeling to explore the conditions of the broad-line emitting gas in two extreme Narrow-line Seyfert 1 galaxies, using the observational results described in the first paper of this series. Photoionization modeling using Cloudy was conducted for the broad, blueshifted wind lines and the narrow, symmetric, rest-wavelength-centered disk lines separately. A broad range of physical conditions were explored for the wind component, and a figure of merit was used to quantitatively evaluate the simulation results. Of the three minima in the figure-of-merit parameter space, we favor the solution characterized by an X-ray weak continuum, elevated abundances, a small column density (log(N_H)\\approx 21.4), relatively high ionization parameter (log(U)\\approx -1.2 - -0.2), a wide range of densities (log(n)\\approx 7 - 11), and a covering fraction of ~0.15. The presence of low-ionization emission lines implies the disk component is optically thick to the continuum, and the SiIII]/CIII] ratio implies a density of 10^10 - 10^10.25 cm^-3. A low ionization parameter (log(U)=-3) is inferred for the intermediate-ionization lines, unless the continuum is ``filtered'' through the wind before illuminating the intermediate-line emitting gas, in which case log(U)=-2.1. The location of the emission regions was inferred from the photoionization modeling and a simple ``toy'' dynamical model. A large black hole mass (1.3 x 10^8 M_\\odot) radiating at 11% of the Eddington luminosity is consistent with the kinematics of both the disk and wind lines, and an emission radius of ~10^4 R_S is inferred for both. We compare these results with previous work and discuss implications.

Karen M. Leighly

2004-02-19T23:59:59.000Z

231

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

Science Conference Proceedings (OSTI)

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

Stefan Irnich

2008-12-01T23:59:59.000Z

232

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

Science Conference Proceedings (OSTI)

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

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

2011-03-01T23:59:59.000Z

233

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

Science Conference Proceedings (OSTI)

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

Magns M. Halldrsson; Takeshi Tokuyama

2006-07-01T23:59:59.000Z

234

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

E-Print Network (OSTI)

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

Mitchell, John E.

235

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

E-Print Network (OSTI)

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

Sridhar, Srinivas

236

Albedo of a Forest Modeled as a Plane with Dense Protrusions  

Science Conference Proceedings (OSTI)

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

J. Otterman

1984-02-01T23:59:59.000Z

237

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

E-Print Network (OSTI)

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

J. B. Griffiths

2005-01-05T23:59:59.000Z

238

Formation of capillary structures with highly viscous fluids in plane microchannels  

E-Print Network (OSTI)

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

Cubaud, Thomas

239

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

E-Print Network (OSTI)

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

Bautz, Marshall W.

240

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

Science Conference Proceedings (OSTI)

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

Weifu Sun; Qinghua Zeng; Aibing Yu

2012-02-01T23:59:59.000Z

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


241

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

Science Conference Proceedings (OSTI)

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

Joseph Pedlosky

2006-11-01T23:59:59.000Z

242

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

E-Print Network (OSTI)

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

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

2007-10-16T23:59:59.000Z

243

Electromagnetic plane waves with negative phase velocity in charged black strings  

SciTech Connect

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

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

2013-02-15T23:59:59.000Z

244

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

245

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

E-Print Network (OSTI)

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

Anderson, Gemma E.

246

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

E-Print Network (OSTI)

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

Sergey Avvakumov; Oleg Karpenkov; Alexey Sossinsky

2013-03-03T23:59:59.000Z

247

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

Science Conference Proceedings (OSTI)

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

S. Danilov; V. M. Gryanik

2004-09-01T23:59:59.000Z

248

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

SciTech Connect

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

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

1989-08-01T23:59:59.000Z

249

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

E-Print Network (OSTI)

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

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

1994-12-18T23:59:59.000Z

250

Turbulence Measurements from a Towed Body  

Science Conference Proceedings (OSTI)

A towed body suitable for measuring oceanic velocity and temperature microstructure is described. The development was motivated by i) a requirement for long times series to produce statistically reliable estimates of dissipation rates, ii) the ...

Thomas R. Osborn; Rolf G. Lueck

1985-12-01T23:59:59.000Z

251

Techniques for Intravascular Foreign Body Retrieval  

SciTech Connect

As endovascular therapies increase in frequency, the incidence of lost or embolized foreign bodies is increasing. The presence of an intravascular foreign body (IFB) is well recognized to have the potential to cause serious complications. IFB can embolize and impact critical sites such as the heart, with subsequent significant morbidity or mortality. Intravascular foreign bodies most commonly result from embolized central line fragments, but they can originate from many sources, both iatrogenic and noniatrogenic. The percutaneous approach in removing an IFB is widely perceived as the best way to retrieve endovascular foreign bodies. This minimally invasive approach has a high success rate with a low associated morbidity, and it avoids the complications related to open surgical approaches. We examined the characteristics, causes, and incidence of endovascular embolizations and reviewed the various described techniques that have been used to facilitate subsequent explantation of such materials.

Woodhouse, Joe B.; Uberoi, Raman, E-mail: raman.uberoi@orh.nhs.uk [Oxford University Hospitals (United Kingdom)

2013-08-01T23:59:59.000Z

252

Opportunistic packet scheduling in body area networks  

Science Conference Proceedings (OSTI)

Significant research efforts are being devoted to Body Area Networks (BAN) due to their potential for revolutionizing healthcare practices. Energy-efficiency and communication reliability are critically important for these networks. In an experimental ...

K. Shashi Prabh; Jan-Hinrich Hauer

2011-02-01T23:59:59.000Z

253

Narrow gap laser welding  

SciTech Connect

A laser welding process including: (a) using optical ray tracing to make a model of a laser beam and the geometry of a joint to be welded; (b) adjusting variables in the model to choose variables for use in making a laser weld; and (c) laser welding the joint to be welded using the chosen variables.

Milewski, John O. (Santa Fe, NM); Sklar, Edward (Santa Fe, NM)

1998-01-01T23:59:59.000Z

254

Narrow gap laser welding  

DOE Patents (OSTI)

A laser welding process including: (a) using optical ray tracing to make a model of a laser beam and the geometry of a joint to be welded; (b) adjusting variables in the model to choose variables for use in making a laser weld; and (c) laser welding the joint to be welded using the chosen variables. 34 figs.

Milewski, J.O.; Sklar, E.

1998-06-02T23:59:59.000Z

255

HI Narrow Self-Absorption in Dark Clouds: Correlations with Molecular Gas and Implications for Cloud Evolution and Star Formation  

E-Print Network (OSTI)

We present the results of a comparative study of HI narrow self-absorption (HINSA), OH, 13CO, and C18O in five dark clouds. The HINSA follows the distribution of the emission of the carbon monoxide isotopologues, and has a characteristic size close to that of 13CO. This confirms that the HINSA is produced by cold HI which is well mixed with molecular gas in well-shielded regions. The ratio of the atomic hydrogen density to total proton density for these sources is 5 to 27 x 10^{-4}. Using cloud temperatures and the density of HI, we set an upper limit to the cosmic ray ionization rate of 10^{-16} s^{-1}. Comparison of observed and modeled fractional HI abundances indicates ages for these clouds to be 10^{6.5} to 10^{7} yr. The low values of the HI density we have determined make it certain that the time scale for evolution from an atomic to an almost entirely molecular phase, must be a minimum of several million years. This clearly sets a lower limit to the overall time scale for star formation and the lifetime of molecular clouds.

P. F. Goldsmith; D. Li

2004-12-16T23:59:59.000Z

256

Toward Photochemical Water Splitting Using Band-Gap-Narrowed Semiconductors and Transition-Metal Based Molecular Catalysts  

DOE Green Energy (OSTI)

We are carrying out coordinated theoretical and experimental studies of toward photochemical water splitting using band-gap-narrowed semiconductors (BGNSCs) with attached multi-electron molecular water oxidation and hydrogen production catalysts. We focus on the coupling between the materials properties and the H{sub 2}O redox chemistry, with an emphasis on attaining a fundamental understanding of the individual elementary steps in the following four processes: (1) Light-harvesting and charge-separation of stable oxide or oxide-derived semiconductors for solar-driven water splitting, including the discovery and characterization of the behavior of such materials at the aqueous interface; (2) The catalysis of the four-electron water oxidation by dinuclear hydroxo transition-metal complexes with quinonoid ligands, and the rational search for improved catalysts; (3) Transfer of the design principles learned from the elucidation of the DuBois-type hydrogenase model catalysts in acetonitrile to the rational design of two-electron hydrogen production catalysts for aqueous solution; (4) Combining these three elements to examine the function of oxidation catalysts on BGNSC photoanode surfaces and hydrogen production catalysts on cathode surfaces at the aqueous interface to understand the challenges to the efficient coupling of the materials functions.

Muckerman,J.T.; Rodriguez, J.A.; Fujita, E.

2009-06-07T23:59:59.000Z

257

HST STIS Ultraviolet Spectral Evidence for Outflow in Extreme Narrow-line Seyfert 1 Galaxies: I. Data and Analysis  

E-Print Network (OSTI)

We present HST STIS observations of two extreme NLS1s, IRAS 13224-3809 and 1H 0707-495. The spectra are characterized by very blue continua, broad, strongly blueshifted high-ionization lines (including \\ion{C}{4} and \\ion{N}{5}), and narrow, symmetric intermediate- (including \\ion{C}{3}], \\ion{Si}{3}], \\ion{Al}{3}) and low-ionization (e.g., \\ion{Mg}{2}) lines centered at their rest wavelengths. The emission-line profiles suggest that the high-ionization lines are produced in a wind, and the intermediate- and low-ionization lines are produced in low-velocity gas associated with the accretion disk or base of the wind. In this paper, we present the analysis of the spectra from these two objects; in a companion paper we present photoionization analysis and a toy dynamical model for the wind. The highly asymmetric profile of \\ion{C}{4} suggests that it is dominated by emission from the wind, so we develop a template for the wind from the \\ion{C}{4} line. We model the bright emission lines in the spectra using a co...

Leighly, K M; Leighly, Karen M.; Moore, John R.

2004-01-01T23:59:59.000Z

258

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

Science Conference Proceedings (OSTI)

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

Jos Luis GonzLez; Baudouin Martineau; Didier Belot

2012-08-01T23:59:59.000Z

259

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

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

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

260

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

E-Print Network (OSTI)

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

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

2011-09-18T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

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

E-Print Network (OSTI)

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

Cho, Sung Nae

2011-01-01T23:59:59.000Z

262

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

E-Print Network (OSTI)

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

K. Qiao; T. W. Hyde

2005-03-08T23:59:59.000Z

263

Solar-Driven Background Intensity Variations in a Focal Plane Array  

Science Conference Proceedings (OSTI)

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

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

1998-12-03T23:59:59.000Z

264

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

E-Print Network (OSTI)

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

George Saklatvala; Michael P. Hobson; Stafford Withington

2007-03-07T23:59:59.000Z

265

A MILLIMETER-WAVE GALACTIC PLANE SURVEY WITH THE BICEP POLARIMETER  

Science Conference Proceedings (OSTI)

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

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

2011-11-10T23:59:59.000Z

266

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

E-Print Network (OSTI)

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

Takahito Todoroki for the PHENIX Collaboration

2013-04-10T23:59:59.000Z

267

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

Science Conference Proceedings (OSTI)

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

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

2011-01-14T23:59:59.000Z

268

Field dependence of the superconducting basal plane anisotropy of TmNi2B2C  

SciTech Connect

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

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

2012-10-01T23:59:59.000Z

269

Intersubband Transitions in Narrow InAs/AlSb Quantum Wells D. C. Larrabee, J. Tang, M. Liang, G. A. Khodaparast, J. Kono  

E-Print Network (OSTI)

Intersubband Transitions in Narrow InAs/AlSb Quantum Wells D. C. Larrabee, J. Tang, M. Liang, G. A investigated intersubband transitions (ISBTs) in InAs/AlSb multiple quantum wells with well widths from 2.1 to 10 nm. The ISBT energy increased with decreasing well width and temperature. To explain these well

Kono, Junichiro

270

Creation of stable nanoconstrictions in metallic thin films via progressive narrowing by focused-ion-beam technique and in situ control of resistance  

Science Conference Proceedings (OSTI)

This work describes the use of focused-ion-beam for the fabrication of metallic nanoconstrictions on a Fe thin film with in situ monitoring of the structure's resistance. With this approach the sequential FIB steps that are used for the gradual narrowing ... Keywords: Conductance quantum G0, FIB patterning, Magnetoresistive thin films, Nanoconstriction

J. Vincenc Obo?a; J. M. de Teresa; R. Crdoba; A. Fernndez-Pacheco; M. R. Ibarra

2009-04-01T23:59:59.000Z

271

A Direct Comparison of Two RDI Shipboard ADCPs: A 75-kHz Ocean Surveyor and a 150-kHz Narrow Band  

Science Conference Proceedings (OSTI)

During a recent transit from Florida to Rhode Island, simultaneous single-ping data were recorded from two acoustic Doppler current profilers on the R/V Endeavor: an old 150-kHz narrow bandwidth (NB) model, and a new 75-kHz model [Ocean Surveyor (...

Julia M. Hummon; Eric Firing

2003-06-01T23:59:59.000Z

272

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

E-Print Network (OSTI)

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

J. B. Griffiths; R. G. Halburd

2007-01-10T23:59:59.000Z

273

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

E-Print Network (OSTI)

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

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

2013-01-01T23:59:59.000Z

274

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

SciTech Connect

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

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

1990-01-01T23:59:59.000Z

275

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

SciTech Connect

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

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

1990-12-31T23:59:59.000Z

276

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

E-Print Network (OSTI)

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

Turner, S. C.

2000-01-01T23:59:59.000Z

277

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

E-Print Network (OSTI)

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

Communicated David Preiss

2001-01-01T23:59:59.000Z

278

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

279

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

E-Print Network (OSTI)

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

A. Pinzul; A. Stern

2004-06-08T23:59:59.000Z

280

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

E-Print Network (OSTI)

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

Gaetano Fiore

2013-12-17T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

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

DOE Patents (OSTI)

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

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

1996-02-27T23:59:59.000Z

282

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

DOE Patents (OSTI)

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

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

1996-01-01T23:59:59.000Z

283

Magnetoresistance Technique for Determining Cross-Plane Mobility in Superlattice Devices  

DOE Green Energy (OSTI)

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

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

1999-09-01T23:59:59.000Z

284

Ballistic Resistance of Body Armor NIJ Standard-0101.06  

Science Conference Proceedings (OSTI)

... 08 STANDARDS Ballistic Resistance of Body Armor NIJ Standard-0101.06 ... Ballistic Resistance of Body Armor NIJ Standard0101.06 ...

2012-05-01T23:59:59.000Z

285

Kinetic characterization of enhanced lipase activity on oil bodies  

Science Conference Proceedings (OSTI)

reaction kinetics of oil bodies versus oil emulsions as sub- strates for lipolytic ... of hydrolysis for the oil body system was comparatively very low due to a brief...

286

Joining of porous silicon carbide bodies  

DOE Patents (OSTI)

A method of joining two porous bodies of silicon carbide is disclosed. It entails utilizing an aqueous slip of a similar silicon carbide as was used to form the porous bodies, including the sintering aids, and a binder to initially join the porous bodies together. Then the composite structure is subjected to cold isostatic pressing to form a joint having good handling strength. Then the composite structure is subjected to pressureless sintering to form the final strong bond. Optionally, after the sintering the structure is subjected to hot isostatic pressing to further improve the joint and densify the structure. The result is a composite structure in which the joint is almost indistinguishable from the silicon carbide pieces which it joins.

Bates, Carl H. (Worcester, MA); Couhig, John T. (Worcester, MA); Pelletier, Paul J. (Thompson, CT)

1990-05-01T23:59:59.000Z

287

REDUCTION OF THE MOMENTUM OF FALLING BODIES  

DOE Patents (OSTI)

A means for catching free falling bodies that may be damaged upon impact is given. Several layers of floating gas-filled rubber balls are contained within a partially compartmented tank of liquid. The compartment extends from beneath the surface of the liquid to that height necessary to contain the desired number of layers of the balls. The balls and the liquid itself break the force of the fall by absorbing the kinetic energy of falling body. The body may then be retrieved from the floor of the tank by a rake that extends from outside of the tank through the free surface area and underneath the compartment wall. This arrangement is particularly useful in collecting irradiated atomic fuel rods that are discharged from a reactor at considerable height without damaging the thin aluminum jacket of the rods.

Kendall, J.W.; Morrison, I.H.

1954-09-21T23:59:59.000Z

288

Narrow Energy Spread Protons and Ions from High-Intensity, High-Contrast Laser Solid Target Interactions  

Science Conference Proceedings (OSTI)

Recent simulations show that an idealized, high intensity, short pulse laser can generate quasi-monoenergetic proton beams with energies over 100 MeV in an interaction with a thin film. However, most short pulse laser facilities with sufficient intensity have difficulty controlling the nanosecond and picosecond contrast necessary to realize such a regime. Experiments were performed to investigate proton and ion acceleration from a high contrast, short pulse laser by employing dual plasma mirrors along with a deformable mirror at the HERCULES laser facility at the Center for Ultrafast Optical Sciences, University of Michigan. Plasma mirrors were characterized, allowing a 50% throughput with an intensity contrast increase of 105. The focal spot quality was also exceptional, showing a 1.1 micron full width at half maximum (FWHM) focal diameter. Experiments were done using temporally cleaned 30 TW, 32 fs pulses to achieve an intensity of up to 10{sup 21} Wcm{sup -2} on Si{sub 3}N{sub 4} and Mylar targets with thicknesses ranging 50 nm to 13 microns. Proton beams with energy spreads below 2 MeV were observed from all thicknesses, peaking with energies up to 10.3 MeV and an energy spread of 0.8 MeV. Similar narrow energy spreads were observed for oxygen, nitrogen, and carbon at the silicon nitride thickness of 50 nm with energies up to 24 MeV with an energy spread of 3 MeV, whereas the energy spread is greatly increased at a larger thickness. Maximum energies were confirmed with CR39 track detectors, while a Thomson ion spectrometer was used to gauge the monoenergetic nature of the beam.

Dollar, Franklin; Matsuoka, Takeshi; McGuffey, Christopher; Bulanov, Stepan S.; Chvykov, Vladimir; Kalintchenko, Galina; Thomas, Alec G. R.; Willingale, Louise; Yanovsky, Victor; Maksimchuk, Anatoly; Krushelnick, Karl [Center for Ultrafast Optical Science, Univ. Of Michigan, Ann Arbor, MI 48109 (United States); Davis, Jack; Petrov, George [Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States)

2010-11-04T23:59:59.000Z

289

Three-body interactions in colloidal systems  

E-Print Network (OSTI)

We present the first direct measurement of three-body interactions in a colloidal system comprised of three charged colloidal particles. Two of the particles have been confined by means of a scanned laser tweezers to a line-shaped optical trap where they diffused due to thermal fluctuations. Upon the approach of a third particle, attractive three-body interactions have been observed. The results are in qualitative agreement with additionally performed nonlinear Poissson-Boltzmann calculations, which also allow us to investigate the microionic density distributions in the neighborhood of the interacting colloidal particles.

J. Dobnikar; M. Brunner; H. H. von Grnberg; C. Bechinger

2008-01-25T23:59:59.000Z

290

Liquid-gas-solid flows with lattice Boltzmann: Simulation of floating bodies  

E-Print Network (OSTI)

This paper presents a model for the simulation of liquid-gas-solid flows by means of the lattice Boltzmann method. The approach is built upon previous works for the simulation of liquid-solid particle suspensions on the one hand, and on a liquid-gas free surface model on the other. We show how the two approaches can be unified by a novel set of dynamic cell conversion rules. For evaluation, we concentrate on the rotational stability of non-spherical rigid bodies floating on a plane water surface - a classical hydrostatic problem known from naval architecture. We show the consistency of our method in this kind of flows and obtain convergence towards the ideal solution for the measured heeling stability of a floating box.

Bogner, Simon

2012-01-01T23:59:59.000Z

291

Emotional body language displayed by artificial agents  

Science Conference Proceedings (OSTI)

Complex and natural social interaction between artificial agents (computer-generated or robotic) and humans necessitates the display of rich emotions in order to be believable, socially relevant, and accepted, and to generate the natural emotional responses ... Keywords: Human computer interactions, emotional body language, human robot interactions

Aryel Beck; Brett Stevens; Kim A. Bard; Lola Caamero

2012-03-01T23:59:59.000Z

292

Geometry of interactions in complex bodies  

E-Print Network (OSTI)

We analyze geometrical structures necessary to represent bulk and surface interactions of standard and substructural nature in complex bodies. Our attention is mainly focused on the influence of diffuse interfaces on sharp discontinuity surfaces. In analyzing this phenomenon, we prove the covariance of surface balances of standard and substructural interactions.

Chiara de Fabriitis; Paolo Maria Mariano

2004-06-18T23:59:59.000Z

293

Rigid Body Simulation with Local Fracturing Effects  

Science Conference Proceedings (OSTI)

Focusing on the real-time and interactive ability features in the Virtual Reality application, we propose a fracture pattern based on local fracture mechanism. Taking advantage of the experience analysis or the offline computation verified fracture characteristic, ... Keywords: Rigid Body, pre-fracture, fracture pattern, local fracture, dynamics

Wu Bo; Zeng Liang; Wu Yagang

2011-05-01T23:59:59.000Z

294

The Lost Soul of the Body Politic  

E-Print Network (OSTI)

The modern nation-state is the product of a gradual process in which the religiously concerned medieval political and ecclesiastical synthesis became more secular and centralized. Mirroring this external institutional development, the theoretical conception of the state changed from one of a natural organic unity of diverse corporate members to a consent-based compact among atomized individuals. This change can be traced in the Body Politic metaphor of four authors: John of Salisbury, Christine de Pizan, Johannes Althusius, and Jean-Jacques Rousseau. In this project, I argue that the Body Politic metaphor, particularly the inclusion or exclusion of a soul of the Body Politic, is uniquely appropriate for capturing the complexity of political life in general across differing levels of aggregation and for elucidating the political and religious commitments of the authors who employ it, as they critique their own contemporary political and religious institutions and describe their ideal societies. In the conclusion, I suggest that the loss of a strongly organic conception of the state has denied modern society and political theory a well established means for incorporating corporate entities and for explaining the existence of the modern nation-state in any kind of transcendental moral context, thus the lost soul of the Body Politic.

Chupp, Jesse

2012-05-01T23:59:59.000Z

295

Numerical techniques of rigid body simulation  

E-Print Network (OSTI)

In recent years, the modeling of physical phenomena has become an integral part of computer applications in diverse areas from engineering to entertainment. This thesis focuses on a particular aspect of this modeling, the simulation of rigid bodies. Complicated simulations require the development of sophisticated collision detection systems and numerical techniques. Previous work in the field has almost exclusively been restricted to geometries that are convex or a union of convex pieces. One of the goals of this thesis is overcoming this restriction. Collision detection is only one of the many hurdles which arise in simulating collisions between rigid bodies. To calculate the appropriate response of colliding bodies, the point of contact between the bodies must be determined. Methods of contact point determination will also be discussed. This thesis also explores the issues of resolving simultaneous collisions and resting contact via the formulation of a linear complementarity problem (LCP). This method maintains the physical validity of the simulator, unlike penalty methods which are often used. Impulse based methods for resting contacts have been proposed and implemented by others, but cannot simulate simple structures, such as a stack of blocks. The LCP formulation allows these types of configurations, which are successfully simulated in this thesis. The culmination of this thesis is the development of a rigid body simulator. The numerical methods and algorithms employed are discussed and are compared to alternative techniques. The intention is that the reader use this thesis and its references to ease the process of writing a new simulator and gain insight into the methods used.

Eberle, David Michael

2001-01-01T23:59:59.000Z

296

Body sensor network security: an identity-based cryptography approach  

Science Conference Proceedings (OSTI)

A body sensor network (BSN), is a network of sensors deployed on a person's body, usually for health care monitoring. Since the sensors collect personal medical data, security and privacy are important components in a body sensor network. At the same ... Keywords: body sensor networks, identity-based cryptography, security

Chiu C. Tan; Haodong Wang; Sheng Zhong; Qun Li

2008-03-01T23:59:59.000Z

297

Body-centric design space for multi-surface interaction  

Science Conference Proceedings (OSTI)

We introduce BodyScape, a body-centric design space that allows us to describe, classify and systematically compare multi-surface interaction techniques, both individually and in combination. BodyScape reflects the relationship between users and their ... Keywords: body-centric design space, multi-surface interaction

Julie Wagner; Mathieu Nancel; Sean G. Gustafson; Stephane Huot; Wendy E. Mackay

2013-04-01T23:59:59.000Z

298

Generic-model based human-body modeling  

Science Conference Proceedings (OSTI)

This paper presents a generic-model based human-body modeling method which take the anatomical structure of the human body into account. The generic model contains anatomical structure of bones and muscles of the human body. For a given target skin mesh, ... Keywords: anatomically-based modeling, generic model, human body modeling

Xiaomao Wu; Lizhuang Ma; Ke-Sen Huang; Yan Gao; Zhihua Chen

2005-09-01T23:59:59.000Z

299

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

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

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

300

Quasipassive positioning platform for nanoscale management of in-plane motion  

Science Conference Proceedings (OSTI)

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

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

2006-07-24T23:59:59.000Z

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


301

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

E-Print Network (OSTI)

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

You-gang Feng

2005-06-24T23:59:59.000Z

302

Energy of gravitational radiation in plane-symmetric space-times  

E-Print Network (OSTI)

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

Sean A. Hayward

2008-05-19T23:59:59.000Z

303

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

DOE Green Energy (OSTI)

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

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

2010-10-01T23:59:59.000Z

304

Vortices and Rossby-wave radiation on the beta-plane  

E-Print Network (OSTI)

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

Llewellyn Smith, Stefan

1996-11-19T23:59:59.000Z

305

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

Science Conference Proceedings (OSTI)

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

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

2007-02-28T23:59:59.000Z

306

Search for heavy narrow dilepton resonances in pp collisions at $\\sqrt{s}$ = 7 TeV and $\\sqrt{s}$ = 8 TeV  

E-Print Network (OSTI)

An updated search for heavy narrow resonances decaying to muon or electron pairs using the CMS detector is presented. Data samples from pp collisions at $\\sqrt{s}$ = 7 TeV and 8 TeV at the LHC, with integrated luminosities of up to 5.3 and 4.1 inverse femtobarns, respectively, are combined. No evidence for a heavy narrow resonance is observed. The analysis of the combined data sets excludes, at 95% confidence level, a Sequential Standard Model Z'$_{SSM}$ resonance lighter than 2590 GeV, a superstring-inspired Z'$_{\\psi}$ lighter than 2260 GeV, and Kaluza-Klein gravitons lighter than 2390 (2030) GeV, assuming that the coupling parameter $k/\\bar{M}_{Pl}$ is 0.10 (0.05). These are the most stringent limits to date.

Chatrchyan, Serguei; Sirunyan, Albert M; Tumasyan, Armen; Adam, Wolfgang; Aguilo, Ernest; Bergauer, Thomas; Dragicevic, Marko; Er, Janos; Fabjan, Christian; Friedl, Markus; Fruehwirth, Rudolf; Ghete, Vasile Mihai; Hrmann, Natascha; Hrubec, Josef; Jeitler, Manfred; Kiesenhofer, Wolfgang; Knnz, Valentin; Krammer, Manfred; Krtschmer, Ilse; Liko, Dietrich; Mikulec, Ivan; Pernicka, Manfred; Rabady, Dinyar; Rahbaran, Babak; Rohringer, Christine; Rohringer, Herbert; Schfbeck, Robert; Strauss, Josef; Taurok, Anton; Waltenberger, Wolfgang; Wulz, Claudia-Elisabeth; Mossolov, Vladimir; Shumeiko, Nikolai; Suarez Gonzalez, Juan; Bansal, Monika; Bansal, Sunil; Cornelis, Tom; De Wolf, Eddi A; Janssen, Xavier; Luyckx, Sten; Mucibello, Luca; Ochesanu, Silvia; Roland, Benoit; Rougny, Romain; Selvaggi, Michele; Van Haevermaet, Hans; Van Mechelen, Pierre; Van Remortel, Nick; Van Spilbeeck, Alex; Blekman, Freya; Blyweert, Stijn; D'Hondt, Jorgen; Gonzalez Suarez, Rebeca; Kalogeropoulos, Alexis; Maes, Michael; Olbrechts, Annik; Tavernier, Stefaan; Van Doninck, Walter; Van Mulders, Petra; Van Onsem, Gerrit Patrick; Villella, Ilaria; Clerbaux, Barbara; De Lentdecker, Gilles; Dero, Vincent; Gay, Arnaud; Hreus, Tomas; Lonard, Alexandre; Marage, Pierre Edouard; Mohammadi, Abdollah; Reis, Thomas; Thomas, Laurent; Vander Velde, Catherine; Vanlaer, Pascal; Wang, Jian; Adler, Volker; Beernaert, Kelly; Cimmino, Anna; Costantini, Silvia; Garcia, Guillaume; Grunewald, Martin; Klein, Benjamin; Lellouch, Jrmie; Marinov, Andrey; Mccartin, Joseph; Ocampo Rios, Alberto Andres; Ryckbosch, Dirk; Sigamani, Michael; Strobbe, Nadja; Thyssen, Filip; Tytgat, Michael; Walsh, Sinead; Yazgan, Efe; Zaganidis, Nicolas; Basegmez, Suzan; Bruno, Giacomo; Castello, Roberto; Ceard, Ludivine; Delaere, Christophe; Du Pree, Tristan; Favart, Denis; Forthomme, Laurent; Giammanco, Andrea; Hollar, Jonathan; Lemaitre, Vincent; Liao, Junhui; Militaru, Otilia; Nuttens, Claude; Pagano, Davide; Pin, Arnaud; Piotrzkowski, Krzysztof; Vizan Garcia, Jesus Manuel; Beliy, Nikita; Caebergs, Thierry; Daubie, Evelyne; Hammad, Gregory Habib; Alves, Gilvan; Correa Martins Junior, Marcos; Martins, Thiago; Pol, Maria Elena; Henrique Gomes E Souza, Moacyr; Ald Jnior, Walter Luiz; Carvalho, Wagner; Custdio, Analu; Da Costa, Eliza Melo; De Jesus Damiao, Dilson; De Oliveira Martins, Carley; Fonseca De Souza, Sandro; Malbouisson, Helena; Malek, Magdalena; Matos Figueiredo, Diego; Mundim, Luiz; Nogima, Helio; Prado Da Silva, Wanda Lucia; Santoro, Alberto; Soares Jorge, Luana; Sznajder, Andre; Vilela Pereira, Antonio; Souza Dos Anjos, Tiago; Bernardes, Cesar Augusto; De Almeida Dias, Flavia; Tomei, Thiago; De Moraes Gregores, Eduardo; Lagana, Caio; Da Cunha Marinho, Franciole; Mercadante, Pedro G; Novaes, Sergio F; Padula, Sandra; Genchev, Vladimir; Iaydjiev, Plamen; Piperov, Stefan; Rodozov, Mircho; Stoykova, Stefka; Sultanov, Georgi; Tcholakov, Vanio; Trayanov, Rumen; Vutova, Mariana; Dimitrov, Anton; Hadjiiska, Roumyana; Kozhuharov, Venelin; Litov, Leander; Pavlov, Borislav; Petkov, Peicho; Bian, Jian-Guo; Chen, Guo-Ming; Chen, He-Sheng; Jiang, Chun-Hua; Liang, Dong; Liang, Song; Meng, Xiangwei; Tao, Junquan; Wang, Jian; Wang, Xianyou; Wang, Zheng; Xiao, Hong; Xu, Ming; Zang, Jingjing; Zhang, Zhen; Asawatangtrakuldee, Chayanit; Ban, Yong; Guo, Yifei; Li, Wenbo; Liu, Shuai; Mao, Yajun; Qian, Si-Jin; Teng, Haiyun; Wang, Dayong; Zhang, Linlin; Zou, Wei; Avila, Carlos; Carrillo Montoya, Camilo Andres; Gomez, Juan Pablo; Gomez Moreno, Bernardo; Osorio Oliveros, Andres Felipe; Sanabria, Juan Carlos; Godinovic, Nikola; Lelas, Damir; Plestina, Roko; Polic, Dunja; Puljak, Ivica; Antunovic, Zeljko; Kovac, Marko; Brigljevic, Vuko; Duric, Senka; Kadija, Kreso; Luetic, Jelena; Mekterovic, Darko; Morovic, Srecko; Tikvica, Lucija; Attikis, Alexandros; Galanti, Mario; Mavromanolakis, Georgios; Mousa, Jehad; Nicolaou, Charalambos; Ptochos, Fotios; Razis, Panos A; Finger, Miroslav; Finger Jr, Michael; Assran, Yasser; Elgammal, Sherif; Ellithi Kamel, Ali; Kuotb Awad, Alaa Metwaly; Mahmoud, Mohammed; Radi, Amr; Kadastik, Mario; Mntel, Mait; Murumaa, Marion; Raidal, Martti; Rebane, Liis; Tiko, Andres; Eerola, Paula; Fedi, Giacomo; Voutilainen, Mikko; Hrknen, Jaakko; Heikkinen, Mika Aatos; Karimki, Veikko; Kinnunen, Ritva; Kortelainen, Matti J; Lampn, Tapio; Lassila-Perini, Kati; Lehti, Sami; Lindn, Tomas; Luukka, Panja-Riina; Menp, Teppo; Peltola, Timo; Tuominen, Eija; Tuominiemi, Jorma; Tuovinen, Esa; Ungaro, Donatella; Wendland, Lauri; Korpela, Arja; Tuuva, Tuure

2013-01-01T23:59:59.000Z

307

Search for heavy narrow dilepton resonances in pp collisions at sqrt(s) = 7 TeV and sqrt(s) = 8 TeV  

E-Print Network (OSTI)

An updated search for heavy narrow resonances decaying to muon or electron pairs using the CMS detector is presented. Data samples from pp collisions at sqrt(s) = 7 TeV and 8 TeV at the LHC, with integrated luminosities of up to 5.3 and 4.1 inverse femtobarns, respectively, are combined. No evidence for a heavy narrow resonance is observed. The analysis of the combined data sets excludes, at 95% confidence level, a Sequential Standard Model Z'[SSM] resonance lighter than 2590 GeV, a superstring-inspired Z'[psi] lighter than 2260 GeV, and Kaluza-Klein gravitons lighter than 2390 (2030) GeV, assuming that the coupling parameter k/M-bar[Pl] is 0.10 (0.05). These are the most stringent limits to date.

CMS Collaboration

2012-12-26T23:59:59.000Z

308

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

E-Print Network (OSTI)

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

2006-01-01T23:59:59.000Z

309

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

Science Conference Proceedings (OSTI)

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

Sheng-Rui Jian; Jenh-Yih Juang

2012-01-01T23:59:59.000Z

310

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

Science Conference Proceedings (OSTI)

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

Zhong Zhong; Wei Lu; Shuai Song; Yaocun Zhang

2011-12-01T23:59:59.000Z

311

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

Science Conference Proceedings (OSTI)

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

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

2009-07-01T23:59:59.000Z

312

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

Science Conference Proceedings (OSTI)

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

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

2000-07-01T23:59:59.000Z

313

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

Science Conference Proceedings (OSTI)

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

Brian K. Arbic; Glenn R. Flierl

2004-01-01T23:59:59.000Z

314

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

Science Conference Proceedings (OSTI)

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

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

2007-07-01T23:59:59.000Z

315

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

Science Conference Proceedings (OSTI)

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

Noboru Nakamura; Da Zhu

2010-09-01T23:59:59.000Z

316

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

Science Conference Proceedings (OSTI)

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

Masahiro Sugiyama

2009-06-01T23:59:59.000Z

317

Pindzola FourBody NISE Computation  

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

Pindzola FourBody NISE Computation Pindzola FourBody NISE Computation NISE Allows Massively Parallel Calculation of Complete Photofragmentation of the Li Atom PindzolaLiFragmentation.gif NISE grant has allowed massively parallel calculations for the complete photofragmentation of the Li atom. Results for energy and angle differential cross sections at a photon energy of 300 eV are in direct support of planned reaction microscope experiments using the free electron laser at DESY in Hamburg, Germany. The work used NERSC's CRAY XE6 supercomputer, which was found to run the codes twice as fast as the CRAY XT5. Work done by James Colgan (LANL) and M.S. Pindzola (Auburn University) Publication (may require a subscription): "Angular Distributions for the Complete Photofragmentation of the Li Atom," Phys. Rev. Lett. 108, 053001

318

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

E-Print Network (OSTI)

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

Fuqiang Wang

2013-09-18T23:59:59.000Z

319

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

SciTech Connect

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

Dayananda, M.A.

1986-05-23T23:59:59.000Z

320

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

Science Conference Proceedings (OSTI)

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

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

2010-05-15T23:59:59.000Z

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321

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

DOE Green Energy (OSTI)

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

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

1985-03-01T23:59:59.000Z

322

Discovery of a GeV Blazar Shining Through the Galactic Plane  

Science Conference Proceedings (OSTI)

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

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

2011-08-11T23:59:59.000Z

323

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

Science Conference Proceedings (OSTI)

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

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

2011-01-15T23:59:59.000Z

324

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

E-Print Network (OSTI)

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

J. B. Griffiths; M. Santano-Roco

2002-06-25T23:59:59.000Z

325

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

SciTech Connect

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

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

2006-12-15T23:59:59.000Z

326

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

E-Print Network (OSTI)

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

Alexander R. Its; Leon A. Takhtajan

2007-08-28T23:59:59.000Z

327

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

E-Print Network (OSTI)

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

F. Minato; K. Hagino

2008-02-19T23:59:59.000Z

328

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

DOE Patents (OSTI)

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

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

2010-11-23T23:59:59.000Z

329

Black-body radiation in extra dimensions  

E-Print Network (OSTI)

The general form of the Stefan-Boltzmann law for the energy density of black-body radiation is generalized to a spacetime with extra dimensions using standard kinetic and thermodynamic arguments. From statistical mechanics one obtains an exact formula. In a field-theoretic derivation, the Maxwell field must be quantized. The notion of electric and magnetic fields is different in spacetimes with more than four dimensions. While the energy-momentum tensor for the Maxwell field is traceless in four dimensions, it is not so when there are extra dimensions. But it is shown that its thermal average is traceless and in agreement with the thermodynamic results.

H. Alnes; F. Ravndal; I. K. Wehus

2005-06-16T23:59:59.000Z

330

Automatic Detection of Learner's Affect From Gross Body Language  

Science Conference Proceedings (OSTI)

We explored the reliability of detecting learners' affect by monitoring their gross body language (body position and arousal) during interactions with an intelligent tutoring system called AutoTutor. Training and validation data on affective states were ...

Sidney D'Mello; Art Graesser

2009-02-01T23:59:59.000Z

331

A 2D human body model dressed in eigen clothing  

Science Conference Proceedings (OSTI)

Detection, tracking, segmentation and pose estimation of people in monocular images are widely studied. Two-dimensional models of the human body are extensively used, however, they are typically fairly crude, representing the body either as a rough outline ...

Peng Guan; Oren Freifeld; Michael J. Black

2010-09-01T23:59:59.000Z

332

Police Body Armor Standards and Testing,  

E-Print Network (OSTI)

For two decades, the number of police officers shot to death each year has been declining while the number of officers shot has been increasing. The decrease in the lethality of shootings is partly attributable to the increase in wearing of bullet-resistant body armor, especially soft, inconspicuous armor designed to be worn full-time. A prospective purchaser can see how much of the body an armor garment covers but cannot see whether it will stop a particular kind of bullet at a particular velocity and protect the wearer from the impact. To provide benchmarks for protection, the National Institute of Justice issued NIJ Standard 0101.03 in 1987. It specifies standard procedures for testing samples of armor. If samples of a model pass, the NIJ or the manufacturer may certify that the model has the type of ballistic resistance for which it was tested. The standard has been controversial since it was issued. This Report describes the origin of the standard, the rationale for particular provisions, and the main points of controversy, which concern acceptable risks, the validity and discrumination of the test, and the reproducibility of results. OTA finds that resolving these controversies will require specifying acceptable risks quantitatively, performing additional research to test validity, and implementing

Vol I

1992-01-01T23:59:59.000Z

333

Body monitoring and imaging apparatus and method  

DOE Patents (OSTI)

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a grating path. The pulses transmitted along the transmit path drive Oh impulse, generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung. The impulse generator in the transmit path can be replaced with a pulsed RF generator. 13 figs.

McEwan, T.E.

1998-06-16T23:59:59.000Z

334

Body monitoring and imaging apparatus and method  

DOE Patents (OSTI)

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a gating path. The pulses transmitted along the transmit path drive an impulse generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung. 12 figs.

McEwan, T.E.

1996-11-12T23:59:59.000Z

335

Body monitoring and imaging apparatus and method  

DOE Patents (OSTI)

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a grating path. The pulses transmitted along the transmit path drive Oh impulse, generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung. The impulse generator in the transmit path can be replaced with a pulsed RF generator.

McEwan, Thomas E. (Livermore, CA)

1998-01-01T23:59:59.000Z

336

Body monitoring and imaging apparatus and method  

DOE Patents (OSTI)

A non-acoustic pulse-echo radar monitor is employed in the repetitive mode, whereby a large number of reflected pulses are averaged to produce a voltage that modulates an audio oscillator to produce a tone that corresponds to the heart motion. The antenna used in this monitor generally comprises two flat copper foils, thus permitting the antenna to be housed in a substantially flat housing. The monitor converts the detected voltage to an audible signal with both amplitude modulation and Doppler effect. It further uses a dual time constant to reduce the effect of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, and vocal chords, and includes a pulse generator for simultaneously inputting a sequence of pulses to a transmit path and a gating path. The pulses transmitted along the transmit path drive an impulse generator and provide corresponding transmit pulses that are applied to a transmit antenna. The gating path includes a range delay generator which generates timed gating pulses. The timed gating pulses cause the receive path to selectively conduct pulses reflected from the body parts and received by a receive antenna. The monitor output potential can be separated into a cardiac output indicative of the physical movement of the heart, and a pulmonary output indicative of the physical movement of the lung.

McEwan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

337

CLASSICAL MECHANICS: THE THREE-BODY PROBLEM ZI CHONG KAO  

E-Print Network (OSTI)

CLASSICAL MECHANICS: THE THREE-BODY PROBLEM ZI CHONG KAO Abstract. The Three-Body Problem is one of the oldest unsolved problems of classical mechanics. It arose as a natural extension of the Two-Body Prob of numerous techniques in classical mechan- ics as well as dynamical systems. Understanding the Three

May, J. Peter

338

Integrated Short Term Navigation of a Towed Underwater Body*  

E-Print Network (OSTI)

Integrated Short Term Navigation of a Towed Underwater Body* G. Damy' M. Joannides2 F. LeGland3 M. An underwater body, to be called here- after the fish, is towed by a surface ship at the end of a few hundred cannot provide any position estimates of an underwater body such as a towed fish, but only position

LeGland, François

339

Optimal control of the heat equation in an inhomogeneous body  

Science Conference Proceedings (OSTI)

In this paper we consider a heat flow in an inhomogeneous body without internal source. There exists special initial and boundary conditions in this system and we intend to find a convenient coefficient of heat conduction for this body so that body cool ... Keywords: approximation theory, heat equation, linear programming, measure theory

A. H. Borzabadi; A. V. Kamyad; M. H. Farahi

2004-05-01T23:59:59.000Z

340

Study of trajectories around a non-spherical body  

Science Conference Proceedings (OSTI)

In the present work we show the expressions of the gravitational potential of homogeneous bodies with non-spherical three-dimensional shapes in order to study the trajectories around these bodies. The potentials of prolate and oblate ellipsoids with ... Keywords: gravitational potential, non-spherical bodies, oblate ellipsoid, polyhedral model, prolate ellipsoid, tetrahedra

A. A. Silva; A. F. B. A Prado; O. C. Winter

2011-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

Observation of a narrow mass state decaying into Upsilon(1S) + gamma in $p\\bar{p}$ collisions at sqrt(s) = 1.96 TeV  

Science Conference Proceedings (OSTI)

Using data corresponding to an integrated luminosity of 1.3 fb{sup -1}, we observe a narrow mass state decaying into {Upsilon}(1S) + {gamma}, where the {Upsilon}(1S) meson is detected by its decay into a pair of oppositely charged muons, and the photon is identified through its conversion into an electron-positron pair. The significance of this observation is 5.6 standard deviations. The mass of the state is centered at 10.551 {+-} 0.014(stat.) {+-} 0.017(syst.) GeV/c{sup 2}, which is consistent with that of the state recently observed by the ATLAS Collaboration.

Abazov, Victor Mukhamedovich; Abbott, Braden Keim; Acharya, Bannanje Sripath; Adams, Mark Raymond; Adams, Todd; Alexeev, Guennadi D.; Alkhazov, Georgiy D.; Alton, Andrew K.; Alverson, George O.; Aoki, Masato; Askew, Andrew Warren

2012-03-01T23:59:59.000Z

342

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

Science Conference Proceedings (OSTI)

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

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

2012-01-30T23:59:59.000Z

343

DOE Essential Body of Knowledge | Department of Energy  

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

Essential Body of Knowledge Essential Body of Knowledge DOE Essential Body of Knowledge DOE Essential Body of Knowledge & Core Competency Training The Office of the Chief Information Officer (OCIO) utilized DOE cybersecurity policy, best practices and lessons learned, and comprehensive internal needs assessments to identify fundamental cybersecurity functional roles and associated responsibilities to and define the essential body of knowledge (EBK) needed to support cybersecurity responsibilities and activities within the Department. Components of the EBK are assigned to each functional role, and customized curriculum is determined for each key role via core competency worksheets. The OCIO has determined the following roles to be key functional cyber roles within the Department:

344

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

Science Conference Proceedings (OSTI)

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

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

2007-10-15T23:59:59.000Z

345

Energy extraction from crustal magma bodies  

DOE Green Energy (OSTI)

An open heat exchanger system for extracting thermal energy directly from shallow crustal magma bodies is described. The concept relies on natural properties of magma to create a permeable, solidified region surrounding a borehole drilled into the magma chamber. The region is fractured, possessing large surface area, and is sealed from the overburden. Energy is extracted by circulating a fluid through the system. Thermal stress analysis shows that such a fractured region can be developed at depths up to 10 km. An open heat exchanger experiment conducted in the partial melt zone of Kilauea Iki lava lake demonstrated the validity of this concept. Effective heat transfer surface area an order of magnitude greater than the borehole area was established during a two-day test period. The open heat exchanger concept greatly extends the number of magma systems that can be economically developed to produce energy.

Dunn, J.C.

1982-01-01T23:59:59.000Z

346

Vertebral Body Growth After Craniospinal Irradiation  

SciTech Connect

Purpose: To estimate the effects of radiotherapy and clinical factors on vertebral growth in patients with medulloblastoma and supratentorial primitive neuroectodermal tumors treated with craniospinal irradiation (CSI) and chemotherapy. Methods and Materials: The height of eight individual or grouped vertebral bodies (C3, C3-C4, T4, T4-T5, C6-T3, T4-T7, L3, L1-L5) was measured before and after CSI (23.4 or 36-39.6 Gy) in 61 patients. Of the 61 patients, 40 were boys and 21 were girls (median age, 7 years; range, 3-13 years), treated between October 1996 and October 2003. Sagittal T{sub 1}-weighted magnetic resonance images were used for the craniocaudal measurements. The measurements numbered 275 (median, 5/patient; range, 3-7). The median follow-up after CSI was 44.1 months (range, 13.8-74.9 months). Results: Significant growth was observed in all measured vertebrae. Excluding C3-C4, the growth rate of the grouped vertebrae was affected by age, gender, and CSI dose (risk classification). The risk classification alone affected the growth rates of C3 (p = 0.002) and L3 (p = 0.02). Before CSI, the length of all vertebral bodies was an increasing function of age (p <0.0001). The C3 length before CSI was affected by gender and risk classification: C3 was longer for female (p = 0.07) and high-risk (p = 0.07) patients. Conclusion: All vertebrae grew significantly after CSI, with the vertebrae of the boys and younger patients growing at a rate greater than that of their counterparts. The effect of age was similar across all vertebrae, and gender had the greatest effect on the growth of the lower cervical and upper thoracic vertebrae. The effect of the risk classification was greatest in the lumbar spine by a factor of {<=}10.

Hartley, Katherine A. [Department of Radiological Sciences, St. Jude Children's Research Hospital, Memphis, TN (United States); Li Chenghong [Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN (United States); Laningham, Fred H.; Krasin, Matthew J. [Department of Radiological Sciences, St. Jude Children's Research Hospital, Memphis, TN (United States); Xiong Xiaoping [Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN (United States); Merchant, Thomas E. [Department of Radiological Sciences, St. Jude Children's Research Hospital, Memphis, TN (United States)], E-mail: thomas.merchant@stjude.org

2008-04-01T23:59:59.000Z

347

Probing Unification With Chandra HETGS and XMM-Newton EPIC And RGS Spectroscopy of the Narrow Emission Line Galaxy NGC 2110  

E-Print Network (OSTI)

We present results from Chandra HETGS (250 ks over two epochs) and XMM-Newton EPIC and RGS (60 ks) observations of NGC 2110, which has been historically classified as a Narrow Emission Line Galaxy galaxy. Our results support the interpretation that the source is a Seyfert 2 viewed through a patchy absorber. The nuclear X-ray spectrum of the source is best described by a power law of photon index $\\Gamma$ ~1.7, modified by absorption from multiple layers of neutral material at a large distance from the central supermassive black hole. We report the strong detections of Fe K$\\alpha$ and Si K$\\alpha$ lines, which are marginally resolved with the Chandra HETGS, and we constrain the emission radius of the fluorescing material to >1 pc. There is some evidence for modest additional broadening at the base of the narrow Fe K$\\alpha$ core with a velocity ~4500 km s$^{-1}$. We find tentative evidence for ionized emission (O VIII Ly $\\alpha$, an O VIII RRC feature, and possibly a Ne IX forbidden line) in the Chandra MEG ...

Evans, Daniel A; Turner, T Jane; Weaver, Kimberly A; Marshall, Herman L

2007-01-01T23:59:59.000Z

348

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

DOE Green Energy (OSTI)

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

B. NEWMAN; C. DUFFY; D. HICKMOTT

2001-04-01T23:59:59.000Z

349

The quantum harmonic oscillator on the sphere and the hyperbolic plane  

SciTech Connect

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

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

2007-10-15T23:59:59.000Z

350

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

E-Print Network (OSTI)

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

Mariano A. del Olmo; Mikhail S. Plyushchay

2005-08-03T23:59:59.000Z

351

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

Science Conference Proceedings (OSTI)

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

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

2008-07-08T23:59:59.000Z

352

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

E-Print Network (OSTI)

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

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

2004-08-12T23:59:59.000Z

353

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

Science Conference Proceedings (OSTI)

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

N. Robb McDonald

1990-11-01T23:59:59.000Z

354

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

Science Conference Proceedings (OSTI)

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

Nathan Paldor; Shira Rubin; Arthur J. Mariano

2007-01-01T23:59:59.000Z

355

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

E-Print Network (OSTI)

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

Nishimori, Hidetoshi

356

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

Science Conference Proceedings (OSTI)

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

Norihiko Sugimoto; Keiichi Ishioka; Katsuya Ishii

2008-01-01T23:59:59.000Z

357

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

E-Print Network (OSTI)

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

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

2006-01-01T23:59:59.000Z

358

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

Science Conference Proceedings (OSTI)

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

R. T. Pierrehumbert

1983-05-01T23:59:59.000Z

359

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

Science Conference Proceedings (OSTI)

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

Victor ?Eremet; Guy Bonnet

2011-01-01T23:59:59.000Z

360

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

Science Conference Proceedings (OSTI)

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

Naoya Inoue; Kentaro Inui

2012-09-01T23:59:59.000Z

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


361

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

Science Conference Proceedings (OSTI)

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

P. Ripa

1982-01-01T23:59:59.000Z

362

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

E-Print Network (OSTI)

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

Dolgachev, Igor V

2008-01-01T23:59:59.000Z

363

Infinite-body optimal transport with Coulomb Cost  

E-Print Network (OSTI)

We introduce and analyze symmetric infinite-body optimal transport (OT) problems with cost function of pair potential form. We show that for a natural class of such costs, the optimizer is given by the independent product measure all of whose factors are given by the one-body marginal. This is in striking contrast to standard finite-body OT problems, in which the optimizers are typically highly correlated, as well as to infinite-body OT problems with Gangbo-Swiech cost. Moreover, by adapting a construction from the study of exchangeable processes in probability theory, we prove that the corresponding $N$-body OT problem is well approximated by the infinite-body problem. To our class belongs the Coulomb cost which arises in many-electron quantum mechanics. The optimal cost of the Coulombic N-body OT problem as a function of the one-body marginal density is known in the physics and quantum chemistry literature under the name SCE functional, and arises naturally as the semiclassical limit of the celebrated Hohenberg-Kohn functional. Our results imply that in the inhomogeneous high-density limit (i.e. $N\\to\\infty$ with arbitrary fixed inhomogeneity profile $\\rho/N$), the SCE functional converges to the mean field functional. We also present reformulations of the infinite-body and N-body OT problems as two-body OT problems with representability constraints and give a dual characterization of representable two-body measures which parallels an analogous result by Kummer on quantum representability of two-body density matrices.

Codina Cotar; Gero Friesecke; Brendan Pass

2013-07-24T23:59:59.000Z

364

Introducing many-body physics using atomic spectroscopy  

E-Print Network (OSTI)

Atoms constitute relatively simple many-body systems, making them suitable objects for developing an understanding of basic aspects of many-body physics. Photoabsorption spectroscopy is a prominent method to study the electronic structure of atoms and the inherent many-body interactions. In this article the impact of many-body effects on well-known spectroscopic features such as Rydberg series, Fano resonances, Cooper minima, and giant resonances is studied, and related many-body phenomena in other fields are outlined. To calculate photoabsorption cross sections the time-dependent configuration interaction singles (TDCIS) model is employed. The conceptual clearness of TDCIS in combination with the compactness of atomic systems allows for a pedagogical introduction to many-body phenomena.

Krebs, Dietrich; Santra, Robin

2013-01-01T23:59:59.000Z

365

Microinjection of anticoilin antibodies affects the structure of coiled bodies  

E-Print Network (OSTI)

Abstract. The coiled body is a distinct subnuclear domain enriched in small nuclear ribonucleoprotein particles (snRNPs) involved in processing of pre-mRNA. Although the function of the coiled body is still unknown, current models propose that it may have a role in snRNP biogenesis, transport, or recycling. Here we describe that anti-coilin antibodies promote a specific disappearance of the coiled body in living human cells, thus providing a novel tool for the functional analysis of this structure. Monoclonal antibodies (mAbs) were raised against recombinant human coilin, the major structural protein of the coiled body. Four mAbs are shown to induce a progressive disappearance of coiled bodies within ?6 h after microinjection into the nucleus of HeLa cells. After their disappearance, coiled bodies

Ftima Almeida; Rainer Saffrich; Wilhelm Ansorge; Maria Carmo-fonseca

1998-01-01T23:59:59.000Z

366

Method of preparing uranium nitride or uranium carbonitride bodies  

DOE Patents (OSTI)

Sintered uranium nitride or uranium carbonitride bodies having a controlled final carbon-to-uranium ratio are prepared, in an essentially continuous process, from U.sub.3 O.sub.8 and carbon by varying the weight ratio of carbon to U.sub.3 O.sub.8 in the feed mixture, which is compressed into a green body and sintered in a continuous heating process under various controlled atmospheric conditions to prepare the sintered bodies.

Wilhelm, Harley A. (Ames, IA); McClusky, James K. (Valparaiso, IN)

1976-04-27T23:59:59.000Z

367

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

SciTech Connect

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

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

2011-11-10T23:59:59.000Z

368

Search for a narrow t(t)over-bar resonance in p(p)over-bar collisions at root s=1.96 TeV  

SciTech Connect

We report a search for a narrow t{bar t} resonance that decays into a lepton+jets final state based on an integrated luminosity of 5.3 fb{sup -1} of proton-antiproton collisions at {radical}s = 1.96 TeV collected by the D0 Collaboration at the Fermilab Tevatron Collider. We set upper limits on the production cross section of such a resonance multiplied by its branching fraction to t{bar t}. We exclude a leptophobic topcolor Z' at the 95% confidence level for masses below 835 GeV (940 GeV) if its width is 1.2% (3%) of its mass. We also exclude color octet vector bosons (colorons) with masses below 775 GeV.

Abazov V. M.; Abbott B.; Acharya B. S.; Adams M.; Adams T.; Alexeev G. D.; Alkhazov G.; Alton A.; Alverson G.; Alves G. A.; Aoki M.; Askew A.; Asman B.; Atkins S.; Atramentov O.; Augsten K.; Avila C.; BackusMayes J.; Badaud F.; Bagby L.; Baldin B.; Bandurin D. V.; Banerjee S.; Barberis E.; Baringer P.; Barreto J.; Bartlett J. F.; Bassler U.; Bazterra V.; Bean A.; Begalli M.; Belanger-Champagne C.; Bellantoni L.; Beri S. B.; Bernardi G.; Bernhard R.; Bertram I.; Besancon M.; Beuselinck R.; Bezzubov V. A.; Bhat P. C.; Bhatnagar V.; Blazey G.; Blessing S.; Bloom K.; Boehnlein A.; Boline D.; Boos E. E.; Borissov G.; Bose T.; Brandt A.; Brandt O.; Brock R.; Brooijmans G.; Bross A.; Brown D.; Brown J.; Bu X. B.; Buehler M.; Buescher V.; Bunichev V.; Burdin S.; Burnett T. H.; Buszello C. P.; Calpas B.; Camacho-Perez E.; Carrasco-Lizarraga M. A.; Casey B. C. K.; Castilla-Valdez H.; Chakrabarti S.; Chakraborty D.; Chan K. M.; Chandra A.; Chapon E.; Chen G.; Chevalier-Thery S.; Cho D. K.; Cho S. W.; Choi S.; Choudhary B.; Cihangir S.; Claes D.; Clutter J.; Cooke M.; Cooper W. E.; Corcoran M.; Couderc F.; Cousinou M-C; Croc A.; Cutts D.; Das A.; Davies G.; De K.; de Jong S. J.; De La Cruz-Burelo E.; Deliot F.; Demina R.; Denisov D.; Denisov S. P.; Desai S.; Deterre C.; DeVaughan K.; Diehl H. T.; Diesburg M.; Ding P. F.; Dominguez A.; Dorland T.; Dubey A.; Dudko L. V.; Duggan D.; Duperrin A.; Dutt S.; Dyshkant A.; Eads M.; Edmunds D.; Ellison J.; Elvira V. D.; Enari Y.; Evans H.; Evdokimov A.; Evdokimov V. N.; Facini G.; Ferbel T.; Fiedler F.; Filthaut F.; Fisher W.; Fisk H. E.; Fortner M.; Fox H.; Fuess S.; Garcia-Bellido A.; Garcia-Guerra G. A.; Gavrilov V.; Gay P.; Geng W.; Gerbaudo D.; Gerber C. E.; Gershtein Y.; Ginther G.; Golovanov G.; Goussiou A.; Grannis P. D.; Greder S.; Greenlee H.; Greenwood Z. D.; Gregores E. M.; Grenier G.; Gris Ph; Grivaz J-F; Grohsjean A.; Gruenendahl S.; Gruenewald M. W.; Guillemin T.; Gutierrez G.; Gutierrez P.; Haas A.; Hagopian S.; Haley J.; Han L.; Harder K.; Harel A.; Hauptman J. M.; Hays J.; Head T.; Hebbeker T.; Hedin D.; Hegab H.; Heinson A. P.; Heintz U.; Hensel C.; Heredia-De La Cruz I.; Herner K.; Hesketh G.; Hildreth M. D.; Hirosky R.; Hoang T.; Hobbs J. D.; Hoeneisen B.; Hohlfeld M.; Hubacek Z.; Hynek V.; Iashvili I.; Ilchenko Y.; Illingworth R.; Ito A. S.; Jabeen S.; Jaffre M.; Jamin D.; Jayasinghe A.; Jesik R.; Johns K.; Johnson M.; Jonckheere A.; Jonsson P.; Joshi J.; Jung A. W.; Juste A.; Kaadze K.; Kajfasz E.; Karmanov D.; Kasper P. A.; Katsanos I.; Kehoe R.; Kermiche S.; Khalatyan N.; Khanov A.; Kharchilava A.; Kharzheev Y. N.; Kohli J. M.; Kozelov A. V.; Kraus J.; Kulikov S.; Kumar A.; Kupco A.; Kurca T.; Kuzmin V. A.; Kvita J.; Lammers S.; Landsberg G.; Lebrun P.; Lee H. S.; Lee S. W.; Lee W. M.; Lellouch J.; Li L.; Li Q. Z.; Lietti S. M.; Lim J. K.; Lincoln D.; Linnemann J.; Lipaev V. V.; Lipton R.; Liu Y.; Lobodenko A.; Lokajicek M.; de Sa R. Lopes; Lubatti H. J.; Luna-Garcia R.; Lyon A. L.; Maciel A. K. A.; Mackin D.; Madar R.; Magana-Villalba R.; Malik S.; Malyshev V. L.; Maravin Y.; Martinez-Ortega J.; McCarthy R.; McGivern C. L.; Meijer M. M.; Melnitchouk A.; Menezes D.; Mercadante P. G.; Merkin M.; Meyer A.; Meyer J.; et al.

2012-03-14T23:59:59.000Z

369

Exotic narrow resonance searches in the system Lambda K0s in p+propane collisions at 10 GeV/c  

E-Print Network (OSTI)

Experimental data from the 2m propane bubble chamber have been analyzed to search for an exotic baryon states, in the $\\Lambda K^0_s$ decay mode for the reaction p+$C_3H_8$ at 10 GeV/c. The invariant mass spectrum $\\Lambda K^0_s$ observe a narrow peaks at 1750$\\pm$18, 1795$\\pm$18,1850$\\pm19$ MeV/$c^2$ and full widths of $\\Gamma_{exp.}$= 32$\\pm$6, 44$\\pm$15, 29.0$\\pm$8 MeV/$c^2$. The statistical significance of these peaks has been estimated as 5.6, 3.3 and 3.0 S.D., respectively. There are the small enhancements in mass regions of (1650-1675) and (1925-1950) ???/?$^2$. These would be candidates for the $N^0$ or the $\\Xi^0$ pentaquark states. The investigation has been performed at the Veksler and Baldin Laboratory of High Energies, JINR.

P. Zh. Aslanyan; V. N. Emelyanenko; G. G. Rikhkvitzkaya

2005-04-15T23:59:59.000Z

370

Body monitoring and imaging apparatus and method - Energy ...  

... of gross sensor-to-surface movement. The monitor detects the movement of one or more internal body parts, such as the heart, lungs, arteries, ...

371

Job-Shop Scheduling in a Body Shop  

E-Print Network (OSTI)

sions between industrial robots have to be taken into ac- count. ... The real world application which motivated this article arises from welding on car bodies: Let J...

372

Quadrupole collectivity in random two-body ensembles  

E-Print Network (OSTI)

We conduct a systematic investigation of the nuclear collective dynamics that emerges in systems with random two-body interactions. We explore the development of the mean field and study its geometry. We investigate multipole collectivities in the many-body spectra and their dependence on the underlying two-body interaction Hamiltonian. The quadrupole-quadrupole interaction component appears to be dynamically dominating in two-body random ensembles. This quadrupole coherence leads to rotational spectral features and thus suggests the formation of the deformed mean-field of a specific geometry.

Volha Abramkina; Alexander Volya

2011-05-09T23:59:59.000Z

373

PROCESS OF PREPARING URANIUM-IMPREGNATED GRAPHITE BODY  

DOE Patents (OSTI)

A method for the fabrication of graphite bodies containing uniformly distributed uranium is described. It consists of impregnating a body of graphite having uniform porosity and low density with an aqueous solution of uranyl nitrate hexahydrate preferably by a vacuum technique, thereafter removing excess aqueous solution from the surface of the graphite, then removing the solvent water from the body under substantially normal atmospheric conditions of temperature and pressure in the presence of a stream of dry inert gas, and finally heating the dry impregnated graphite body in the presence of inert gas at a temperature between 800 and 1400 d C to convert the uranyl nitrate hexahydrate to an oxide of uranium.

Kanter, M.A.

1958-05-20T23:59:59.000Z

374

Causes and concerns of body dissatisfaction among gay men.  

E-Print Network (OSTI)

??Body dissatisfaction is a growing problem in the gay male population, with serious implications for psychological and social well-being. Gay men tend to be at (more)

Rainey, Josh Craig

2012-01-01T23:59:59.000Z

375

Probing Unification With Chandra HETGS and XMM-Newton EPIC And RGS Spectroscopy of the Narrow Emission Line Galaxy NGC 2110  

E-Print Network (OSTI)

We present results from Chandra HETGS (250 ks over two epochs) and XMM-Newton EPIC and RGS (60 ks) observations of NGC 2110, which has been historically classified as a Narrow Emission Line Galaxy galaxy. Our results support the interpretation that the source is a Seyfert 2 viewed through a patchy absorber. The nuclear X-ray spectrum of the source is best described by a power law of photon index $\\Gamma$ ~1.7, modified by absorption from multiple layers of neutral material at a large distance from the central supermassive black hole. We report the strong detections of Fe K$\\alpha$ and Si K$\\alpha$ lines, which are marginally resolved with the Chandra HETGS, and we constrain the emission radius of the fluorescing material to >1 pc. There is some evidence for modest additional broadening at the base of the narrow Fe K$\\alpha$ core with a velocity ~4500 km s$^{-1}$. We find tentative evidence for ionized emission (O VIII Ly $\\alpha$, an O VIII RRC feature, and possibly a Ne IX forbidden line) in the Chandra MEG and XMM-Newton RGS spectra, which could be associated with the known extended X-ray emission that lies ~160 pc from the nucleus. We suggest that the $10^{23}$ cm$^{-2}$ partially covering absorber originates in broad-line region clouds in the vicinity of the AGN, and that the $3\\times10^{22}$ cm$^{-2}$ coverer is likely to have a more distant origin and have a flattened geometry in order to allow the small-scale radio jet to escape.

Daniel A. Evans; Julia C. Lee; T. Jane Turner; Kimberly A. Weaver; Herman L. Marshall

2007-08-30T23:59:59.000Z

376

Solving the three-body Coulomb breakup problem using exterior complex scaling  

DOE Green Energy (OSTI)

Electron-impact ionization of the hydrogen atom is the prototypical three-body Coulomb breakup problem in quantum mechanics. The combination of subtle correlation effects and the difficult boundary conditions required to describe two electrons in the continuum have made this one of the outstanding challenges of atomic physics. A complete solution of this problem in the form of a ''reduction to computation'' of all aspects of the physics is given by the application of exterior complex scaling, a modern variant of the mathematical tool of analytic continuation of the electronic coordinates into the complex plane that was used historically to establish the formal analytic properties of the scattering matrix. This review first discusses the essential difficulties of the three-body Coulomb breakup problem in quantum mechanics. It then describes the formal basis of exterior complex scaling of electronic coordinates as well as the details of its numerical implementation using a variety of methods including finite difference, finite elements, discrete variable representations, and B-splines. Given these numerical implementations of exterior complex scaling, the scattering wave function can be generated with arbitrary accuracy on any finite volume in the space of electronic coordinates, but there remains the fundamental problem of extracting the breakup amplitudes from it. Methods are described for evaluating these amplitudes. The question of the volume-dependent overall phase that appears in the formal theory of ionization is resolved. A summary is presented of accurate results that have been obtained for the case of electron-impact ionization of hydrogen as well as a discussion of applications to the double photoionization of helium.

McCurdy, C.W.; Baertschy, M.; Rescigno, T.N.

2004-05-17T23:59:59.000Z

377

Nickel container of highly-enriched uranium bodies and sodium  

SciTech Connect

A fuel element comprises highly a enriched uranium bodies coated with a nonfissionable, corrosion resistant material. A plurality of these bodies are disposed in layers, with sodium filling the interstices therebetween. The entire assembly is enclosed in a fluid-tight container of nickel.

Zinn, Walter H. (Hinsdale, IL)

1976-01-01T23:59:59.000Z

378

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

Science Conference Proceedings (OSTI)

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

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

2012-03-05T23:59:59.000Z

379

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

SciTech Connect

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

Fisher, Ian Randal

2012-05-08T23:59:59.000Z

380

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

Note: This page contains sample records for the topic "narrow body planes" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

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

382

Three-body interactions on a triangular lattice  

Science Conference Proceedings (OSTI)

We analyze the hard-core Bose-Hubbard model with both three-body and nearest-neighbor repulsions on a triangular lattice. The phase diagram is achieved by means of the semiclassical approximation and a quantum Monte Carlo simulation. For a system with only three-body interactions, both the supersolid phase and the one-third solid disappear while the two-thirds solid is stable. As the thermal behavior of the bosons with nearest-neighbor repulsion, the solid and the superfluid undergo the three-state Potts- and Kosterlitz-Thouless-type phase transitions, respectively. In a system with both frustrated nearest-neighbor two-body and three-body interactions, the supersolid and one-third solid are revived. By tuning the strength of the three-body interactions, the phase diagram is distorted because the one-third solid and the supersolid are suppressed.

Zhang Xuefeng [Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100190 (China); Physics Department and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern (Germany); Wen Yuchuan [Center of Theoretical Physics, Department of Physics, Capital Normal University, Beijing 100048 (China); Yu Yue [Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100190 (China)

2011-05-01T23:59:59.000Z

383

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

DOE Patents (OSTI)

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

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

1998-02-17T23:59:59.000Z

384

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

DOE Patents (OSTI)

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

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

1998-02-17T23:59:59.000Z

385

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

SciTech Connect

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

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

2010-05-15T23:59:59.000Z

386

Matrix elements of one-body and two-body operators between arbitrary HFB multi-quasiparticle states  

E-Print Network (OSTI)

We present new formulae for the matrix elements of one-body and two-body physical operators in compact forms, which are applicable to arbitrary Hartree-Fock-Bogoliubov wave functions, including those for multi-quasiparticle excitations. The test calculations show that our formulae may substantially accelerate the process of symmetry restoration when applied to the heavy nuclear system.

Qing-Li Hu; Zao-Chun Gao; Y. S. Chen

2013-07-26T23:59:59.000Z

387

Comparison of Two Solar Minima: Narrower Streamer Stalk Region and Conserved Open Magnetic Flux in the Region Outside of Streamer Stalk  

E-Print Network (OSTI)

To explore the difference between the most two recent solar minima, we analyze the in-situ ACE and ULYSSES observations and examine the distributions of the three types of solar wind (streamer-stalk-associated wind, wind from outside the streamer stalk that can be associated, in part, with coronal holes, and interplanetary coronal mass ejections). We use the taxonomy provided by Zhao et al. (2009) to identify the three types of solar wind. We then map the in-situ observations to the 2.5 solar radii surface. With the aid of the potential-field-source surface model (PFSS), we calculate the normal distance from the solar wind "foot point" to the local helisopheric current sheet on that surface. We find that the source region of the streamer stalk wind is narrower compared to the previous minimum. The area outside the streamer stalk is accordingly larger, but the magnetic field strength is observed to be lower, with the result that the total amount of the magnetic open flux from the outside of streamer stalk regi...

Zhao, Liang

2010-01-01T23:59:59.000Z

388

Unraveling gravity beyond Einstein with extended test bodies  

E-Print Network (OSTI)

The motion of test bodies in gravity is tightly linked to the conservation laws. This well-known fact in the context of General Relativity is also valid for gravitational theories which go beyond Einstein's theory. Here we derive the equations of motion for test bodies for a very large class of gravitational theories with a general nonminimal coupling to matter. These equations form the basis for future systematic tests of alternative gravity theories. Our treatment is covariant and generalizes the classic Mathisson-Papapetrou-Dixon result for spinning (extended) test bodies. The equations of motion for structureless test bodies turn out to be surprisingly simple, despite the very general nature of the theories considered.

Dirk Puetzfeld; Yuri N. Obukhov

2013-07-15T23:59:59.000Z

389

Property:Project Nearest Body of Water | Open Energy Information  

Open Energy Info (EERE)

Nearest Body of Water Nearest Body of Water Jump to: navigation, search Property Name Project Nearest Body of Water Property Type String Pages using the property "Project Nearest Body of Water" Showing 25 pages using this property. (previous 25) (next 25) M MHK Projects/40MW Lewis project + North Atlantic Ocean + MHK Projects/ADM 3 + Galway Bay site close to Spiddal + MHK Projects/ADM 5 + government Pilot Zone + MHK Projects/Algiers Light Project + Mississippi River + MHK Projects/Anconia Point Project + Mississippi River + MHK Projects/Ashley Point Project + Mississippi River + MHK Projects/Astoria Tidal Energy + East River + MHK Projects/Avalon Tidal + Ingram Thorofare + MHK Projects/Avondale Bend Project + Mississippi River + MHK Projects/BW2 Tidal + Maurice River +

390

Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators  

Open Energy Info (EERE)

Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators In The Western Great Basin Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators In The Western Great Basin Details Activities (8) Areas (4) Regions (0) Abstract: Body and surface wave tomography are two of the primary methods for estimation of regional scale seismic velocity variations. Seismic velocity is affected by temperature and rock composition in complex ways, but when combined with geologic and structural maps, relative temperature can in some cases be estimated. We present preliminary tomographic models for compressional and shear-wave velocity using local and regional earthquakes recorded by Earthscope Transportable Array stations, network

391

Thermal techniques for characterizing magma body geometries | Open Energy  

Open Energy Info (EERE)

techniques for characterizing magma body geometries techniques for characterizing magma body geometries Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Thermal techniques for characterizing magma body geometries Details Activities (1) Areas (1) Regions (0) Abstract: The surface heat flux distribution resulting from emplaced magma bodies can be used to help characterize the magma source. Closed-form analytical solutions for the conduction heat transfer from various idealized magma geometries (dikes, sills, and spheres) are obtained using either the Schwarz-Christoffel transformation theorem (dikes and sills) or the 'method of images' with superposition (spheres). Comparison of these analytically determined heat flux distributions with field data from active geothermal areas at Yellowstone, Avachinsky volcano, Kilauea Iki,

392

Matter wave optical techniques for probing many-body targets  

E-Print Network (OSTI)

This thesis reports on our investigation of the uses of matter waves to probe many-body targets. We begin by discussing decoherence in an atom interferometer, in which a free gas acts as a refractive medium for a matter ...

Sanders, Scott Nicholas

2010-01-01T23:59:59.000Z

393

Applications of four-body exponentially correlated functions  

SciTech Connect

We demonstrate the applicability of four-body exponentially correlated functions for the accurate calculations of relativistic effects in lithium-like atoms and present results for matrix elements of various operators which involve negative powers of interparticle distances.

Puchalski, Mariusz; Pachucki, Krzysztof [Institute of Theoretical Physics, University of Warsaw, Hoza 69, P-00-681 Warsaw (Poland)

2010-05-15T23:59:59.000Z

394

Magnetic Evidence for a Partially Differentiated Carbonaceous Chondrite Parent Body  

E-Print Network (OSTI)

The textures of chondritic meteorites demonstrate that they are not the products of planetary melting processes. This has long been interpreted as evidence that chondrite parent bodies never experienced large-scale melting. ...

Shuster, David L.

395

Rigid-body fracture sound with precomputed soundbanks  

Science Conference Proceedings (OSTI)

We propose a physically based algorithm for synthesizing sounds synchronized with brittle fracture animations. Motivated by laboratory experiments, we approximate brittle fracture sounds using time-varying rigid-body sound models. We extend methods for ...

Changxi Zheng; Doug L. James

2010-07-01T23:59:59.000Z

396

Behavioural reconfigurable and adaptive data reduction in body sensor networks  

Science Conference Proceedings (OSTI)

Body area sensor networks have been attracting more and more applications which focus on human behaviour and monitoring, ranging from simple positioning to medical applications. These BSNs inherit unique specifications since are composed of light-weight ...

Foad Dabiri; Hyduke Noshadi; Majid Sarrafzadeh

2013-06-01T23:59:59.000Z

397

Hybrid wing-body aircraft noise and performance assessment  

E-Print Network (OSTI)

Hybrid wing-body aircraft noise generation and boundary layer ingestion (BLI) performance trends with increased fan face Mach number inlet designs are investigated. The presented topics are in support of the NASA subsonic ...

Weed, Philip Andrew

2010-01-01T23:59:59.000Z

398

Development of a body force description for compressor stability assessment  

E-Print Network (OSTI)

This thesis presents a methodology for a body force description of a compressor with particular application to compressor stability calculations. The methodology is based on extracting blade forces from an axisymmetric ...

Kiwada, George (George Ford)

2008-01-01T23:59:59.000Z

399

Proximity of body & mind : urban gym as a heterotopic domain  

E-Print Network (OSTI)

In the present urban space, where an individual is exposed to the conditions of heterogeneity and anonymity, a conventional Bodybuilding Gym opens up certain issues of emplacement of un/nder-spoken men's body and its ...

Lee, Hyung Suk, 1971-

2002-01-01T23:59:59.000Z

400

Chiral nuclear dynamics with three-body forces  

E-Print Network (OSTI)

We review recent progress in implementing high-precision chiral two- and three-body forces in nuclear many-body systems beyond light nuclei. We begin with applications to finite nuclei, which we study through the nuclear shell model and self-consistent mean field theory. We then turn our attention to infinite nuclear matter treated within the framework of Landau's theory of normal Fermi liquids.

J. W. Holt; N. Kaiser; W. Weise

2011-11-25T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

Wavelet Methods in the Relativistic Three-Body Problem  

E-Print Network (OSTI)

In this paper we discuss the use of wavelet bases to solve the relativistic three-body problem. Wavelet bases can be used to transform momentum-space scattering integral equations into an approximate system of linear equations with a sparse matrix. This has the potential to reduce the size of realistic three-body calculations with minimal loss of accuracy. The wavelet method leads to a clean, interaction independent treatment of the scattering singularities which does not require any subtractions.

Fatih Bulut; W. N. Polyzou

2005-07-22T23:59:59.000Z

402

Multinucleon Ejection Model for Two Body Current Neutrino Interactions  

Science Conference Proceedings (OSTI)

A model is proposed to describe nucleons ejected from a nucleus as a result of two-body-current neutrino interactions. The model can be easily implemented in Monte Carlo neutrino event generators. Various possibilities to measure the two-body-current contribution are discussed. The model can help identify genuine charge current quasielastic events and allow for a better determination of the systematic error on neutrino energy reconstruction in neutrino oscillation experiments.

Sobczyk, Jan T.; /Fermilab

2012-06-01T23:59:59.000Z

403

Chiral nuclear dynamics with three-body forces  

E-Print Network (OSTI)

We review recent progress in implementing high-precision chiral two- and three-body forces in nuclear many-body systems beyond light nuclei. We begin with applications to finite nuclei, which we study through the nuclear shell model and self-consistent mean field theory. We then turn our attention to infinite nuclear matter treated within the framework of Landau's theory of normal Fermi liquids.

Holt, J W; Weise, W

2011-01-01T23:59:59.000Z

404

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

Science Conference Proceedings (OSTI)

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

Sukky Jun; Tenzin Tashi; Harold S. Park

2011-01-01T23:59:59.000Z

405

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

E-Print Network (OSTI)

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

Bernhard Rothenstein

2005-06-20T23:59:59.000Z

406

Measurement of branching fractions for B \\to J/??K decays and search for a narrow resonance in the J/??final state  

E-Print Network (OSTI)

We report an observation of the $B^{\\pm} \\to J/\\psi \\eta K^{\\pm}$ and $B^0 \\to J/\\psi \\eta K^0_S$ decays using 772$\\times 10^{6}$ $B\\bar{B}$ pairs collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We obtain the branching fractions ${\\cal B}(B^{\\pm}\\rightarrow J/\\psi\\eta K^{\\pm})=(1.27\\pm 0.11{\\rm (stat.)\\pm 0.11{\\rm (syst.)})}\\times10^{-4}$ and ${\\cal B}(B^0\\to J/\\psi \\eta K^0_S)=(5.22 \\pm 0.78 {\\rm(stat.)} \\pm 0.49{\\rm(syst.)})\\times10^{-5}$. We search for a new narrow charmonium(-like) state $X$ in the $J/\\psi \\eta$ mass spectrum and find no significant excess. We set upper limits on the product of branching fractions, ${\\cal B}(B^\\pm \\to XK^\\pm){\\cal B}(X \\to J/\\psi \\eta)$, at 3872 MeV$/c^2$ where a $C$-odd partner of X(3872) may exist, at $\\psi(4040)$ and $\\psi(4160)$ assuming their known mass and width, and over a range from 3.8 to 4.8 GeV$/c^2$. % at a 5 MeV$/c^2$ step. The obtained upper limits at 90% confidence level for $X^{C{\\rm -odd}}(3872)$, $\\psi(4040)$ and $\\psi(4160)$ are 3.8$\\times 10^{-6}$, 15.5$\\times 10^{-6}$ and 8.1$\\times 10^{-6}$, respectively.

Belle Collaboration; T. Iwashita; K. Miyabayashi; V. Bhardwaj; I. Adachi; H. Aihara; D. M. Asner; A. M. Bakich; A. Bala; B. Bhuyan; G. Bonvicini; A. Bozek; M. Bra?ko; T. E. Browder; M. -C. Chang; A. Chen; B. G. Cheon; K. Chilikin; R. Chistov; K. Cho; V. Chobanova; S. -K. Choi; Y. Choi; D. Cinabro; J. Dalseno; M. Danilov; Z. Doleal; Z. Drsal; D. Dutta; S. Eidelman; S. Esen; H. Farhat; J. E. Fast; M. Feindt; T. Ferber; A. Frey; V. Gaur; N. Gabyshev; S. Ganguly; R. Gillard; Y. M. Goh; B. Golob; J. Haba; T. Hara; K. Hayasaka; H. Hayashii; T. Higuchi; Y. Horii; Y. Hoshi; W. -S. Hou; H. J. Hyun; T. Iijima; A. Ishikawa; R. Itoh; Y. Iwasaki; I. Jaegle; T. Julius; D. H. Kah; J. H. Kang; E. Kato; T. Kawasaki; H. Kichimi; C. Kiesling; D. Y. Kim; H. J. Kim; H. O. Kim; J. B. Kim; J. H. Kim; M. J. Kim; Y. J. Kim; K. Kinoshita; J. Klucar; B. R. Ko; P. Kody; S. Korpar; P. Krian; P. Krokovny; T. Kuhr; T. Kumita; A. Kuzmin; Y. -J. Kwon; J. S. Lange; S. -H. Lee; Y. Li; J. Libby; C. Liu; Y. Liu; P. Lukin; D. Matvienko; H. Miyata; R. Mizuk; A. Moll; T. Mori; Y. Nagasaka; E. Nakano; M. Nakao; Z. Natkaniec; M. Nayak; C. Ng; N. K. Nisar; S. Nishida; O. Nitoh; S. Ogawa; S. Okuno; G. Pakhlova; E. Panzenbock; H. Park; H. K. Park; T. K. Pedlar; R. Pestotnik; M. Petri?; L. E. Piilonen; M. Ritter; M. Rohrken; A. Rostomyan; S. Ryu; H. Sahoo; T. Saito; K. Sakai; Y. Sakai; S. Sandilya; D. Santel; L. Santelj; T. Sanuki; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; D. Semmler; K. Senyo; O. Seon; M. E. Sevior; M. Shapkin; C. P. Shen; T. -A. Shibata; J. -G. Shiu; B. Shwartz; A. Sibidanov; F. Simon; Y. -S. Sohn; A. Sokolov; E. Solovieva; S. Stanic; M. Stari?; M. Steder; T. Sumiyoshi; U. Tamponi; K. Tanida; G. Tatishvili; Y. Teramoto; K. Trabelsi; T. Tsuboyama; M. Uchida; S. Uehara; Y. Unno; S. Uno; P. Urquijo; P. Vanhoefer; G. Varner; K. E. Varvell; V. Vorobyev; A. Vossen; M. N. Wagner; C. H. Wang; M. -Z. Wang; P. Wang; X. L. Wang; M. Watanabe; Y. Watanabe; K. M. Williams; E. Won; B. D. Yabsley; Y. Yamashita; S. Yashchenko; Y. Yook; C. Z. Yuan; Z. P. Zhang; V. Zhilich; A. Zupanc

2013-10-10T23:59:59.000Z

407

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

E-Print Network (OSTI)

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

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

2013-01-01T23:59:59.000Z

408

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

E-Print Network (OSTI)

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

Flavio S. Nogueira; Ilya Eremin

2013-04-10T23:59:59.000Z

409

Evolution and Functions of Oleosins and Oleosin-Coated Oil Bodies in Plants  

E-Print Network (OSTI)

ofOleosinsandOleosin?CoatedOilBodiesinPlants AGI,MundyJ,TzenJT(2001)Oilbodiesandtheirassociatedlocalizationandsynthesisofanoil?bodymembrane protein

Huang, Chien-Yu

2013-01-01T23:59:59.000Z

410

Effect of Body Mass Index on Intrafraction Prostate Displacement Monitored by Real-Time Electromagnetic Tracking  

Science Conference Proceedings (OSTI)

Purpose: To evaluate, using real-time monitoring of implanted radiofrequency transponders, the intrafraction prostate displacement of patients as a function of body mass index (BMI). Methods and Materials: The motions of Beacon radiofrequency transponders (Calypso Medical Technologies, Seattle, WA) implanted in the prostate glands of 66 men were monitored throughout the course of intensity modulated radiation therapy. Data were acquired at 10 Hz from setup to the end of treatment, but only the 1.7 million data points with a 'beam on' tag were used in the analysis. There were 21 obese patients, with BMI {>=}30 and 45 nonobese patients in the study. Results: Mean displacements were least in the left-right lateral direction (0.56 {+-} 0.24 mm) and approximately twice that magnitude in the superior-inferior and anterior-posterior directions. The net vector displacement was larger still, 1.95 {+-} 0.47 mm. Stratified by BMI cohort, the mean displacements per patient in the 3 Cartesian axes as well as the net vector for patients with BMI {>=}30 were slightly less (<0.2 mm) but not significantly different than the corresponding values for patients with lower BMIs. As a surrogate for the magnitude of oscillatory noise, the standard deviation for displacements in all measured planes showed no significant differences in the prostate positional variability between the lower and higher BMI groups. Histograms of prostate displacements showed a lower frequency of large displacements in obese patients, and there were no significant differences in short-term and long-term velocity distributions. Conclusions: After patients were positioned accurately using implanted radiofrequency transponders, the intrafractional displacements in the lateral, superior-inferior, and anterior-posterior directions as well as the net vector displacements were smaller, but not significantly so, for obese men than for those with lower BMI.

Butler, Wayne M., E-mail: wbutler@wheelinghospital.org [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States); Wheeling Jesuit University, Wheeling, West Virginia (United States); Morris, Mallory N. [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States)] [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States); Merrick, Gregory S. [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States) [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States); Wheeling Jesuit University, Wheeling, West Virginia (United States); Kurko, Brian S.; Murray, Brian C. [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States)] [Schiffler Cancer Center, Wheeling Hospital, Wheeling, West Virginia (United States)

2012-10-01T23:59:59.000Z

411

Orbit Determination with the two-body Integrals  

E-Print Network (OSTI)

We investigate a method to compute a finite set of preliminary orbits for solar system bodies using the first integrals of the Kepler problem. This method is thought for the applications to the modern sets of astrometric observations, where often the information contained in the observations allows only to compute, by interpolation, two angular positions of the observed body and their time derivatives at a given epoch; we call this set of data attributable. Given two attributables of the same body at two different epochs we can use the energy and angular momentum integrals of the two-body problem to write a system of polynomial equations for the topocentric distance and the radial velocity at the two epochs. We define two different algorithms for the computation of the solutions, based on different ways to perform elimination of variables and obtain a univariate polynomial. Moreover we use the redundancy of the data to test the hypothesis that two attributables belong to the same body (linkage problem). It is also possible to compute a covariance matrix, describing the uncertainty of the preliminary orbits which results from the observation error statistics. The performance of this method has been investigated by using a large set of simulated observations of the Pan-STARRS project.

Giovanni Federico Gronchi; Linda Dimare; Andrea Milani

2009-11-18T23:59:59.000Z

412

Small Body Exploration Technologies as Precursors for Interstellar Robotics  

SciTech Connect

The scientific activities undertaken to explore our Solar System will be the same as required someday at other stars. The systematic exploration of primitive small bodies throughout our Solar System requires new technologies for autonomous robotic spacecraft. These diverse celestial bodies contain clues to the early stages of the Solar System's evolution as well as information about the origin and transport of water-rich and organic material, the essential building blocks for life. They will be among the first objects studied at distant star systems. The technologies developed to address small body and outer planet exploration will form much of the technical basis for designing interstellar robotic explorers. The Small Bodies Assessment Group, which reports to NASA, initiated a Technology Forum in 2011 that brought together scientists and technologists to discuss the needs and opportunities for small body robotic exploration in the Solar System. Presentations and discussions occurred in the areas of mission and spacecraft design, electric power, propulsion, avionics, communications, autonomous navigation, remote sensing and surface instruments, sampling, intelligent event recognition, and command and sequencing software. In this paper, the major technology themes from the Technology Forum are reviewed, and suggestions are made for developments that will have the largest impact on realizing autonomous robotic vehicles capable of exploring other star systems.

Noble, Robert; /SLAC; Sykes, Mark V.; /PSI, Tucson

2012-02-15T23:59:59.000Z

413

Relativistic three-body calculation of $pi$d scattering  

SciTech Connect

We present a unitary, Lorentz-invariant three-body calculation of pion- deuteron elastic scattering, based upon the idea of quasiparticle-dominated two- body interactions. We make detailed comparisons of these results with those of a conventional fixed-scatterer approach and find that the fixed-nucleon calculation does not adequately reproduce the three-body results; this finding demonstrates the importance of properly treating the three-body kinematics (i.e., of including nucleon recoil and isobar propagation). The multiple scattering expansion converges much more rapidly in the three-body approach than in the fixed- scatterer calculation. Intermediate nucleon-nucleon interactions play an important role, giving contributions to the scattering amplitude of the same order as those given by pion multiple scattering; these effects are especially significant for back-angle scattering. Finally, we compare our results with the available experimental data for the $pi$d total and integrated elastic cross sections and obtain good agreement. Nucleon spin is neglected in all calculations. (AIP)

Woloshyn, R.M.; Moniz, E.J.; Aaron, R.

1976-01-01T23:59:59.000Z

414

Four-body continuum-discretized coupled-channels calculations  

SciTech Connect

The development of a continuum-bin scheme of discretization for three-body projectiles is necessary for studies of reactions of Borromean nuclei such as {sup 6}He within the continuum-discretized coupled-channels approach. Such a procedure, for constructing bin states on selected continuum energy intervals, is formulated and applied for the first time to reactions of a three-body projectile. The continuum representation uses the eigenchannel expansion of the three-body S matrix. The method is applied to the challenging case of the {sup 6}He+{sup 208}Pb reaction at 22 MeV, where an accurate treatment of both the Coulomb and the nuclear interactions with the target is necessary.

Rodriguez-Gallardo, M. [Instituto de Estructura de la Materia, CSIC, Serrano 123, E-28006 Madrid (Spain); Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla (Spain); Centro de Fisica Nuclear, Universidade de Lisboa, Avenida Prof. Gama Pinto 2, P-1649-003 Lisboa (Portugal); Arias, J. M.; Moro, A. M. [Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla (Spain); Gomez-Camacho, J. [Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla (Spain); Centro Nacional de Aceleradores, Avenida Thomas A. Edison, E-41092 Sevilla (Spain); Thompson, I. J. [Lawrence Livermore National Laboratory, Physical Science Directorate, P. O. Box 808, L-414, Livermore, California 94551 (United States); Tostevin, J. A. [Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom)

2009-11-15T23:59:59.000Z

415

Boundary conditions on internal three-body wave functions  

SciTech Connect

For a three-body system, a quantum wave function {Psi}{sub m}{sup {ell}} with definite {ell} and m quantum numbers may be expressed in terms of an internal wave function {chi}{sub k}{sup {ell}} which is a function of three internal coordinates. This article provides necessary and sufficient constraints on {chi}{sub k}{sup {ell}} to ensure that the external wave function {Psi}{sub k}{sup {ell}} is analytic. These constraints effectively amount to boundary conditions on {chi}{sub k}{sup {ell}} and its derivatives at the boundary of the internal space. Such conditions find similarities in the (planar) two-body problem where the wave function (to lowest order) has the form r{sup |m|} at the origin. We expect the boundary conditions to prove useful for constructing singularity free three-body basis sets for the case of nonvanishing angular momentum.

Mitchell, Kevin A.; Littlejohn, Robert G.

1999-10-01T23:59:59.000Z

416

International Carbon Storage Body Praises Department of Energy Projects |  

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

International Carbon Storage Body Praises Department of Energy International Carbon Storage Body Praises Department of Energy Projects International Carbon Storage Body Praises Department of Energy Projects November 8, 2012 - 12:00pm Addthis Washington, DC - Three U.S. Department of Energy (DOE) projects have been identified by an international carbon storage organization as an important advancement toward commercialization and large-scale deployment of carbon capture, utilization, and storage (CCUS) technologies. The projects were officially recognized by the Carbon Sequestration Leadership Forum (CSLF) at its recent meeting in Perth, Australia for making significant contributions to the development of global carbon dioxide (CO2) mitigation technologies. All three projects will appear in a yearly project portfolio on the CSLF website to keep the global community

417

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

E-Print Network (OSTI)

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

Sunandan Gangopadhyay; Frederik G Scholtz

2013-09-12T23:59:59.000Z

418

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

E-Print Network (OSTI)

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

Aoqi Feng

2008-07-29T23:59:59.000Z

419

AIAA 20010064 Multi-Flexible-Body Dynamic Analysis of  

E-Print Network (OSTI)

. and Dijkstra, S., "Modeling of Structural Dynamics of Lagerwey LW-50/750 Wind Turbine," Wind En- gineering, VolAIAA 2001­0064 Multi-Flexible-Body Dynamic Analysis of Horizontal-Axis Wind Turbines Mayuresh J-0150 ABSTRACT A dynamic stability analysis is presented for a horizontal-axis wind turbine modeled as a multi

Patil, Mayuresh

420

New development of mobile instant messaging: virtual body communication interaction  

Science Conference Proceedings (OSTI)

People's non-verbal communication, accounting for as high as 70 percent in daily communication, can deepen interpersonal communication and convey what cannot be conveyed in language. It, however, has not been fully used in present mobile instant messaging. ... Keywords: body language, daily communication, gender, mobile instant messaging

Linong Dai

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "narrow body planes" 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

Yet Another Fault Injection Technique : by Forward Body Biasing Injection  

E-Print Network (OSTI)

expensive fault injection tech- niques, like clock or voltage glitches, are well taken into accountYet Another Fault Injection Technique : by Forward Body Biasing Injection K. TOBICH1,2, P. MAURINE1 Injection, Electromag- netic Attacks, RSA, Chinese Remainder Theorem 1 Introduction Fault injection

422

A massively space-time parallel N-body solver  

Science Conference Proceedings (OSTI)

We present a novel space-time parallel version of the Barnes-Hut tree code pepc using pfasst, the Parallel Full Approximation Scheme in Space and Time. The naive use of increasingly more processors for a fixed-size N-body problem is prone to saturate ...

R. Speck; D. Ruprecht; R. Krause; M. Emmett; M. Minion; M. Winkel; P. Gibbon

2012-11-01T23:59:59.000Z

423

Expansion of elastic bodies with application in the bread industry  

Science Conference Proceedings (OSTI)

This article is concerned with modeling the expansion of an elastic body with application to the evolution of bread dough during the proofing process. The main result is a set of linear second-order partial differential equations corresponding to an ... Keywords: B-Splines, Bread dough, Elastic expansion, Rayleigh-Ritz method, Surface evolution

P. C. Bollada

2008-10-01T23:59:59.000Z

424

Heterogeneous composite bodies with isolated lenticular shaped cermet regions  

SciTech Connect

A heterogeneous body having ceramic rich cermet regions in a more ductile metal matrix. The heterogeneous bodies are formed by thermal spray operations on metal substrates. The thermal spray operations apply heat to a cermet powder and project it onto a solid substrate. The cermet powder is composed of complex composite particles in which a complex ceramic-metallic core particle is coated with a matrix precursor. The cermet regions are generally comprised of complex ceramic-metallic composites that correspond approximately to the core particles. The cermet regions are approximately lenticular shaped with an average width that is at least approximately twice the average thickness. The cermet regions are imbedded within the matrix phase and generally isolated from one another. They have obverse and reverse surfaces. The matrix phase is formed from the matrix precursor coating on the core particles. The amount of heat applied during the formation of the heterogeneous body is controlled so that the core particles soften but do not become so fluid that they disperse throughout the matrix phase. The force of the impact on the surface of the substrate tends to flatten them. The flattened cermet regions tend to be approximately aligned with one another in the body.

Sherman, Andrew J. (Cirtland Hills, OH)

2009-12-22T23:59:59.000Z

425

Nuclear Many-Body Physics Where Structure And Reactions Meet  

E-Print Network (OSTI)

The path from understanding a simple reaction problem of scattering or tunneling to contemplating the quantum nuclear many-body system, where structure and continuum of reaction-states meet, overlap and coexist, is a complex and nontrivial one. In this presentation we discuss some of the intriguing aspects of this route.

Naureen Ahsan; Alexander Volya

2009-06-24T23:59:59.000Z

426

Computational Nuclear Quantum Many-Body Problem: The UNEDF Project  

E-Print Network (OSTI)

The UNEDF project was a large-scale collaborative effort that applied high-performance computing to the nuclear quantum many-body problem. UNEDF demonstrated that close associations among nuclear physicists, mathematicians, and computer scientists can lead to novel physics outcomes built on algorithmic innovations and computational developments. This review showcases a wide range of UNEDF science results to illustrate this interplay.

Scott Bogner; Aurel Bulgac; Joseph A. Carlson; Jonathan Engel; George Fann; Richard J. Furnstahl; Stefano Gandolfi; Gaute Hagen; Mihai Horoi; Calvin W. Johnson; Markus Kortelainen; Ewing Lusk; Pieter Maris; Hai Ah Nam; Petr Navratil; Witold Nazarewicz; Esmond G. Ng; Gustavo P. A. Nobre; Erich Ormand; Thomas Papenbrock; Junchen Pei; Steven C. Pieper; Sofia Quaglioni; Kenneth J. Roche; Jason Sarich; Nicolas Schunck; Masha Sosonkina; Jun Terasaki; Ian J. Thompson; James P. Vary; Stefan M. Wild

2013-04-12T23:59:59.000Z

427

Advances in Conjugated Linoleic Acid Research, Volume 3Chapter 11 An Overview of the Effects of Conjugated Linoleic Acid on Body Weight and Body Composition in Humans  

Science Conference Proceedings (OSTI)

Advances in Conjugated Linoleic Acid Research, Volume 3 Chapter 11 An Overview of the Effects of Conjugated Linoleic Acid on Body Weight and Body Composition in Humans Downloadable pdf of Chapter 11 An Ove

428

Method of forming aluminum oxynitride material and bodies formed by such methods  

DOE Patents (OSTI)

Methods of forming aluminum oxynitride (AlON) materials include sintering green bodies comprising aluminum orthophosphate or another sacrificial material therein. Such green bodies may comprise aluminum, oxygen, and nitrogen in addition to the aluminum orthophosphate. For example, the green bodies may include a mixture of aluminum oxide, aluminum nitride, and aluminum orthophosphate or another sacrificial material. Additional methods of forming aluminum oxynitride (AlON) materials include sintering a green body including a sacrificial material therein, using the sacrificial material to form pores in the green body during sintering, and infiltrating the pores formed in the green body with a liquid infiltrant during sintering. Bodies are formed using such methods.

Bakas, Michael P. (Ammon, ID); Lillo, Thomas M. (Idaho Falls, ID); Chu, Henry S. (Idaho Falls, ID)

2010-11-16T23:59:59.000Z

429

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

E-Print Network (OSTI)

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

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

2013-02-15T23:59:59.000Z

430

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

Science Conference Proceedings (OSTI)

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

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

2011-06-15T23:59:59.000Z

431

Bilayer superfluidity of fermionic polar molecules: Many-body effects  

Science Conference Proceedings (OSTI)

We study the BCS superfluid transition in a single-component fermionic gas of dipolar particles loaded in a tight bilayer trap, with the electric dipole moments polarized perpendicular to the layers. Based on the detailed analysis of the interlayer scattering, we calculate the critical temperature of the interlayer superfluid pairing transition when the layer separation is both smaller (dilute regime) and on the order or larger (dense regime) than the mean interparticle separation in each layer. Our calculations go beyond the standard BCS approach and include the many-body contributions resulting in the mass renormalization, as well as additional contributions to the pairing interaction. We find that the many-body effects have a pronounced effect on the critical temperature and can either decrease (in the very dilute limit) or increase (in the dense and moderately dilute limits) the transition temperature as compared to the BCS approach.

Baranov, M. A. [Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck (Austria); Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck (Austria); RRC 'Kurchatov Institute', Kurchatov Square 1, 123182 Moscow (Russian Federation); Micheli, A.; Ronen, S.; Zoller, P. [Institute for Theoretical Physics, University of Innsbruck, A-6020 Innsbruck (Austria); Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck (Austria)

2011-04-15T23:59:59.000Z

432

Many-body interactions in quasi-freestanding graphene  

Science Conference Proceedings (OSTI)

The Landau-Fermi liquid picture for quasiparticles assumes that charge carriers are dressed by many-body interactions, forming one of the fundamental theories of solids. Whether this picture still holds for a semimetal such as graphene at the neutrality point, i.e., when the chemical potential coincides with the Dirac point energy, is one of the long-standing puzzles in this field. Here we present such a study in quasi-freestanding graphene by using high-resolution angle-resolved photoemission spectroscopy. We see the electron-electron and electron-phonon interactions go through substantial changes when the semimetallic regime is approached, including renormalizations due to strong electron-electron interactions with similarities to marginal Fermi liquid behavior. These findings set a new benchmark in our understanding of many-body physics in graphene and a variety of novel materials with Dirac fermions.

Siegel, David; Park, Cheol-Hwan; Hwang, Choongyu; Deslippe, Jack; Fedorov, Alexei; Louie, Steven; Lanzara, Alessandra

2011-06-03T23:59:59.000Z

433

Experimental studies of electromagnetic properties of few body systems  

DOE Green Energy (OSTI)

An overview is given of some recent and planned experiments which have or will substantially increase our knowledge of the electromagnetic properties of few body systems. Specific examples include the proton and neutron elastic form factors, the deuteron elastic form factors, deuteron threshold electrodisintegration and quasi-elastic scattering, deuteron photodisintegration, and finally measurements of cross sections in deep inelastic scattering from hydrogen, deuterium, and iron. 47 refs., 13 figs. (DWL)

Bosted, P.E.

1987-08-01T23:59:59.000Z

434

Boundary Conditions for Three-Body Scattering in Configuration Space  

E-Print Network (OSTI)

The asymptotic behavior of three-body scattering wave functions in configuration space is studied by considering a model equation that has the same asymptotic form as the Faddeev equations. Boundary conditions for the wave function are derived, and their validity is verified by numerical calculations. It is shown that these boundary conditions for the partial differential equation can be used to obtain accurate numerical solutions for the wave function.

G. L. Payne; W. Gloeckle; J. L. Friar

1999-08-18T23:59:59.000Z

435

Steam Turbine Casing and Valve Body Repair Guidelines  

Science Conference Proceedings (OSTI)

Todays flexible mode of operation can result in damage to heavy-section components, such as steam turbine and valve casings. Thus, owners and operators are often faced with repairing a critical component. This report is part of a set of documents that address the key areas in the asset management of steam turbine casings and valve bodiesnondestructive evaluation and damage detection, repair, and life ...

2013-12-14T23:59:59.000Z

436

Entanglement replication in driven-dissipative many body systems  

E-Print Network (OSTI)

We study the dissipative dynamics of two independent arrays of many-body systems, locally driven by a common entangled field. We show that in the steady state the entanglement of the driving field is reproduced in an arbitrarily large series of inter-array entangled pairs over all distances. Local nonclassical driving thus realizes a scale-free entanglement replication and long-distance entanglement distribution mechanism that has immediate bearing on the implementation of quantum communication networks.

S. Zippilli; M. Paternostro; G. Adesso; F. Illuminati

2012-04-25T23:59:59.000Z

437

Whole-body counting in the Marshall Islands  

SciTech Connect

In 1978 the Marshall Islands Radiological Safety Program was organized to perform radiation measurements and assess radiation doses for the people of the Bikini, Enewetak, Rongelap and Utirik Atolls. One of the major field components of this program is whole- body counting (WBC). WBC is used to monitor the quantity of gamma- emitting radionuclides present in individuals. A primary objective of the program was to establish {sup 137}Cesium body contents among the Enewetak, Rongelap and Utirik populations. {sup 137}Cs was the only gamma-emitting fission radionuclide detected in the 1,967 persons monitored. {sup 137}Cs body burdens tended to increase with age for both sexes, and were higher in males. The average {sup 137}Cs dose Annual Effective Dose for the three populations was as follows: For Enewetak, the dose was 22{+-}4 {mu}Sv. For Utirik, the dose was 33{+-} 3 {mu}Sv. Since 1985 the Rongelap people have been self-exiled to Mejatto. Biological elimination should have reduced their dose to virtually zero, and the measured dose was 2{+-}2 {mu}Sv. If they had remained on Rongelap Island, the calculated dose would have been 99 {mu}Sv, which is about one-third of the background dose. 7 refs., 1 tab. (MHB)

Sun, L.C.; Clinton, J.; Kaplan, E.; Meinhold, C.B.

1991-01-01T23:59:59.000Z

438

Magnetotelluric Responces of Three-Dimentional Bodies in Layered Earths  

DOE Green Energy (OSTI)

The electric and magnetic fields scattered by a three-dimensional inhomogeneity in a conducting earth result largely from current-gathering, a boundary polarization charge phenomenon that becomes increasingly important as frequency falls. Boundary charges cause normalized electric field magnitudes, and thus tensor apparent resistivities and magnitudes of vertical admittance elements, to remain anomalous as frequency approaches zero. However, these E-field distortions below certain frequencies are essentially in-phase with the incident electric field. In addition, secondary magnetic field amplitudes over a body ultimately decline in proportion to the layered host impedance. It follows that tipper element magnitudes and all MT function phases become minimally affected at low frequencies by an inhomogeneity. Resistivity structure in nature is a collection of inhomogeneities of various scales, and the small structures in this collection can have MT responses as strong as those of the large structures. Hence, a severe distortion due to current-gathering in any nearby, small-scale geological noise can be superimposed to arbitrarily low frequencies upon the apparent resistivities and vertical admittance magnitudes of buried targets. On the other hand, the MT responses of small and large bodies have frequency dependencies that are, in general, separated as the square of the geometric scale factor distinguishing the different bodies.

Wannamaker, Phillip E.; Ward, Stanley H.; Hohmann, Gerald W.

1982-11-01T23:59:59.000Z

439

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

E-Print Network (OSTI)

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

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

2013-01-01T23:59:59.000Z

440

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

E-Print Network (OSTI)

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

V. A. Okorokov

2013-01-05T23:59:59.000Z

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441

"I'm not perfect": an analysis of the narratives of young women's body image  

E-Print Network (OSTI)

Previous research has explored the influence of media on the development of feminine body image. Additional research has examined the influence of interpersonal relationships such as family and friends on body image. No research has yet examine the ways in which these factors are related and the effect they have on one another. This thesis examines the ways in which young women who are all members of the same sorority discuss their body image with one another, the stories that they tell about developing their own body image, and the factors that they find most influential to their body image. The girls speak about their body image in relation to mediated images; food, exercise, and diet; and clothing. The stories that they tell about developing body image either include the influence of friends and family or the influence of a particular activity that changes their body image. Finally, the girls' body image is most influenced by external situations such as interactions with others.

Dummer, Susan Ilene

2002-01-01T23:59:59.000Z

442

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

E-Print Network (OSTI)

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

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

2005-01-01T23:59:59.000Z

443

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

Science Conference Proceedings (OSTI)

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

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

1991-02-01T23:59:59.000Z

444

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

E-Print Network (OSTI)

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

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

445

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

E-Print Network (OSTI)

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

446

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

Science Conference Proceedings (OSTI)

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

Christopher A. Jeffery

447

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

Science Conference Proceedings (OSTI)

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

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

2010-12-15T23:59:59.000Z

448

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

SciTech Connect

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

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

2009-05-01T23:59:59.000Z

449

Recognizing whether sensors are on the same body  

E-Print Network (OSTI)

Abstract. As personal health sensors become ubiquitous, we also expect them to become interoperable. That is, instead of closed, end-to-end personal health sensing systems, we envision standardized sensors wirelessly communicating their data to a device many people already carry today, the cellphone. In an open personal health sensing system, users will be able to seamlessly pair off-the-shelf sensors with their cellphone and expect the system to just work. However, this ubiquity of sensors creates the potential for users to accidentally wear sensors that are not necessarily paired with their own cellphone. A husband, for example, might mistakenly wear a heart-rate sensor that is actually paired with his wifes cellphone. As long as the heart-rate sensor is within communication range, the wifes cellphone will be receiving heart-rate data about her husband, data that is incorrectly entered into her own health record. We provide a method to probabilistically detect this situation. Because accelerometers are relatively cheap and require little power, we imagine that the cellphone and each sensor will have a companion accelerometer embedded with the sensor itself. We extract standard features from these companion accelerometers, and use a pair-wise statistic coherence, a measurement of how well two signals are related in the frequency domain to determine how well features correlate for different locations on the body. We then use these feature coherences to train a classifier to recognize whether a pair of sensors or a sensor and a cellphone are on the same body. We evaluate our method over a dataset of several individuals walking around with sensors in various positions on their body and experimentally show that our method is capable of achieving an accuracies over 80%. 1

Cory Cornelius; David Kotz

2011-01-01T23:59:59.000Z

450

Stokes' Cradle: Normal Three-Body Collisions between Wetted Particles  

E-Print Network (OSTI)

In this work, a combination of experiments and theory is used to investigate three-body, normal collisions between solid particles with a liquid coating (i.e., "wetted" particles). Experiments are carried out using a Stokes' cradle, an apparatus inspired by the Newton's cradle desktop toy except with wetted particles. Unlike previous work on two-body systems, which may either agglomerate or rebound upon collision, four outcomes are possible in three-body systems: fully agglomerated, Newton's cradle (striker and target particle it strikes agglomerate), reverse Newton's cradle (targets agglomerate while striker separates), and fully separated. Post-collisional velocities are measured over a range of parameters. For all experiments, as the impact velocity increases, the progression of outcomes observed is fully agglomerated, reverse Newton's cradle, and fully separated. Notably, as the viscosity of the oil increases, experiments reveal a decrease in the critical Stokes number (the Stokes number that demarcates a transition from agglomeration to separation) for both sets of adjacent particles. A scaling theory is developed based on lubrication forces and particle deformation and elasticity. Unlike previous work for two-particle systems, two pieces of physics are found to be critical in the prediction of a regime map that is consistent with experiments: (i) an additional resistance upon rebound of the target particles due to the pre-existing liquid bridge between them (which has no counterpart in two-particle collisions), and (ii) the addition of a rebound criterion due to glass transition of the liquid layer at high pressure between colliding particles.

C. M. Donahue; C. M. Hrenya; R. H. Davis; K. J. Nakagawa; A. P. Zelinskaya; G. G. Joseph

2009-12-18T23:59:59.000Z

451

Probing quantum many-body dynamics in nuclear systems  

E-Print Network (OSTI)

Quantum many-body nuclear dynamics is treated at the mean-field level with the time-dependent Hartree-Fock (TDHF) theory. Low-lying and high-lying nuclear vibrations are studied using the linear response theory. The fusion mechanism is also described for light and heavy systems. The latter exhibit fusion hindrance due to quasi-fission. Typical characteristics of quasi-fission, such as contact time and partial symmetrisation of the fragments mass in the exit channel, are reproduced by TDHF calculations. The (multi-)nucleon transfer at sub-barrier energies is also discussed.

C. Simenel; M. Dasgupta; D. J. Hinde; A. Kheifets; A. Wakhle

2013-08-23T23:59:59.000Z

452

Improved Numerical Method for Calculation of 4-Body Transition Amplitudes  

E-Print Network (OSTI)

In order to study 4-body atomic collisions such as excitation-ionization, transfer with target excitation, and double electron capture, the calculation of a nine-dimensional numerical integral is often required. This calculation can become computationally expensive, especially when calculating fully differential cross sections (FDCS), where the positions and momenta of all the particles are known. We have developed a new technique for calculating FDCS using fewer computing hours, but more memory. This new technique allows for much more efficient calculations and the use of many fewer resources.

Harris, A L

2013-01-01T23:59:59.000Z

453

Processed Splitting Algorithms for Rigid-Body Molecular Dynamics Simulations  

E-Print Network (OSTI)

A new approach for integration of motion in many-body systems of interacting polyatomic molecules is proposed. It is based on splitting time propagation of pseudo-variables in a modified phase space, while the real translational and orientational coordinates are decoded by processing transformations. This allows to overcome the barrier on the order of precision of the integration at a given number of force-torque evaluations per time step. Testing in dynamics of water versus previous methods shows that the obtained algorithms significantly improve the accuracy of the simulations without extra computational costs.

Igor P. Omelyan

2008-05-15T23:59:59.000Z

454

The many-body Green function of degenerate systems  

E-Print Network (OSTI)

A rigorous non perturbative adiabatic approximation of the evolution operator in the many-body physics of degenerate systems is derived. This approximation is used to solve the long-standing problem of the choice of the initial states of H0 leading to eigenstates of H0+V for degenerate systems. These initial states are eigenstates of P0 V P0, where P0 is the projection onto a degenerate eigenspace of H0. This result is used to give the proper definition of the Green function, the statistical Green function and the non-equilibrium Green function of degenerate systems. The convergence of these Green functions is established.

Christian Brouder; Gianluca Panati; Gabriel Stoltz

2009-06-11T23:59:59.000Z

455

Computational nuclear quantum many-body problem: The UNEDF project  

SciTech Connect

The UNEDF project was a large-scale collaborative effort that applied high-performance computing to the nuclear quantum many-body problem. The primary focus of the project was on constructing, validating, and applying an optimized nuclear energy density functional, which entailed a wide range of pioneering developments in microscopic nuclear structure and reactions, algorithms, high-performance computing, and uncertainty quantification. UNEDF demonstrated that close associations among nuclear physicists, mathematicians, and computer scientists can lead to novel physics outcomes built on algorithmic innovations and computational developments. This review showcases a wide range of UNEDF science results to illustrate this interplay.

Fann, George I [ORNL

2013-01-01T23:59:59.000Z

456

Frustration, Entanglement, and Correlations in Quantum Many Body Systems  

E-Print Network (OSTI)

We derive an exact lower bound to a universal measure of frustration in degenerate ground states of quantum many-body systems. The bound results in the sum of two contributions: entanglement and classical correlations arising from local measurements. We show that average frustration properties are completely determined by the behavior of the maximally mixed ground state. We identify sufficient conditions for a quantum spin system to saturate the bound, and for models with twofold degeneracy we prove that average and local frustration coincide.

U. Marzolino; S. M. Giampaolo; F. Illuminati

2013-02-25T23:59:59.000Z

457

Continuous method for manufacturing grain-oriented magnetostrictive bodies  

DOE Patents (OSTI)

The invention comprises a continuous casting and crystallization method for manufacturing grain-oriented magnetostrictive bodies. A magnetostrictive alloy is melted in a crucible having a bottom outlet. The melt is discharged through the bottom of the crucible and deposited in an elongated mold. Heat is removed from the deposited melt through the lower end portion of the mold to progressively solidify the melt. The solid-liquid interface of the melt moves directionally upwardly from the bottom to the top of the mold, to produce the axial grain orientation.

Gibson, Edwin D. (Ames, IA); Verhoeven, John D. (Ames, IA); Schmidt, Frederick A. (Ames, IA); McMasters, O. Dale (Ames, IA)

1988-01-01T23:59:59.000Z

458

Performing ARTs: Technologies of Participation and Reproduction from Body Art to Bio Art  

E-Print Network (OSTI)

2003. ---. The Ethical Claims of Bio Art: Killing the OtherReproduction from Body Art to Bio Art By Kelly Ann RaffertyReproduction from Body Art to Bio Art by Kelly Ann Rafferty

Rafferty, Kelly Ann

2010-01-01T23:59:59.000Z

459

Medical Examiner/Coroner on the Handling of a Body/Human Remains...  

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

Medical ExaminerCoroner on the Handling of a BodyHuman Remains that are Potentially Radiologically Contaminated Medical ExaminerCoroner on the Handling of a BodyHuman Remains...

460

Oil Bodies and Oleosins in Physcomitrella Possess Characteristics Representative of Early Trends  

E-Print Network (OSTI)

Oil Bodies and Oleosins in Physcomitrella Possess Characteristics Representative of Early Trends oleosin genes. Microscopy examination of Physcomitrella revealed that oil bodies (OBs) were abundant in the photosynthetic vegetative gametophyte and the reproductive spore. Chromatography illustrated the neutral lipids

Gent, Universiteit

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461

www.elsevier.com/locate/tecto Diapiric emplacement in the upper crust of a granitic body: the La Bazana granite (SW Spain)  

E-Print Network (OSTI)

The ascent and emplacement of granites in the upper crust is a major geological phenomenon accomplished by a number of different processes. The active processes determine the final geometry of the bodies and, in some favourable cases, the inverse problem of deducing mechanisms can be undertaken by relying on the geometry of plutons. This is the case of the La Bazana granitic pluton, a small Variscan igneous body that intruded Cambrian rocks of the Ossa-Morena Zone (SW Iberian Massif) in the core of a large late upright antiform. The granite shows no appreciable solid-state deformation, but has a late magmatic foliation whose orientation, derived from field observations, defines a gentle dome. The regional attitude of the main foliation in the country rock (parallel to the axial plane of recumbent folds) is NWSE, but just around the granite, it accommodates to the dome shape of the pluton. Flattening in the host rock on top of the granite is indicated by boudinaged and folded veins, and appears to be caused by an upward pushing of the magma during its emplacement. The dome-shaped foliation of the granite, geometrically and kinematically congruent with the flattening in the host rock, can be related in the same way to the upward pushing of the magma. The level of final emplacement was deduced from the mineral associations in the thermal aureole to be of 710 km in depth. Models of the gravity anomaly related to the granite body show that the granite has a teardroppipe shape enlarged at its top. Diapiric ascent of the magma through the lower middle crust is inferred until reaching a high viscous level, where final emplacement accompanied by lateral expansion and vertical flattening took place. This natural example suggests

Elena Galad-enrquez; Jess Galindo-zaldvar; O Simancas; Inmaculada Expsito

2001-01-01T23:59:59.000Z

462

Effects of Varying the Three-Body Molecular Hydrogen  

DOE Green Energy (OSTI)

The transformation of atomic hydrogen to molecular hydrogen through three-body reactions is a crucial stage in the collapse of primordial, metal-free halos, where the first generation of stars (Population III stars) in the Universe are formed. However, in the published literature, the rate coefficient for this reaction is uncertain by nearly an order of magnitude. We report on the results of both adaptive mesh refinement (AMR) and smoothed particle hydrodynamics (SPH) simulations of the collapse of metal-free halos as a function of the value of this rate coefficient. For each simulation method, we have simulated a single halo three times, using three different values of the rate coefficient. We find that while variation between halo realizations may be greater than that caused by the three-body rate coefficient being used, both the accretion physics onto Population III protostars as well as the long-term stability of the disk and any potential fragmentation may depend strongly on this rate coefficient.

Turk, Matthew J.; /San Diego, CASS; Clark, Paul; Glover, S.C.O.; /ZAH, Heidelberg; Greif, T.H.; /Garching, Max Planck Inst. Plasmaphys.; Abel, Tom; Klessen, Ralf; /KIPAC, Menlo Park /ZAH, Heidelberg /KIPAC, Menlo Park; Bromm, Volker; /Texas U., Astron. Dept.

2011-03-03T23:59:59.000Z

463

The biokinetics of ruthenium in the human body  

SciTech Connect

The biokinetics of ruthenium (Ru) in the human body is of interest due mainly to the potential for occupational or environmental exposure to 106Ru (T1/2 = 373.6 d) and 103Ru (T1/2 = 39.3 d), which typically represent a significant portion of the fission products in a reactor inventory. During reactor operations or nuclear fuel reprocessing these ruthenium isotopes may be present as ruthenium tetroxide (RuO4) vapor, a highly mobile form of ruthenium that has been involved in a number of cases of accidental exposure to 106Ru or 103Ru. This paper summarizes the biokinetic database for ruthenium and proposes a new respiratory model for inhaled RuO4 vapor, a new biokinetic for systemic (absorbed) ruthenium, and material-specific gastrointestinal absorption fractions for ruthenium. The proposed respiratory model for RuO4 differs from the current ICRP model mainly in that it depicts slower clearance of deposited activity from the respiratory tract and lower absorption to blood than depicted in the current ICRP model. The proposed systemic biokinetic model depicts more realistic paths of movement of absorbed ruthenium in the body than the current ICRP model and, in contrast to the present model, a less uniform distribution of systemic activity. Implications of the proposed models with regard to inhalation and ingestion dose coefficients for 106Ru are examined.

Leggett, Richard Wayne [ORNL

2011-01-01T23:59:59.000Z

464

Menu driven heat treatment control of thin walled bodies  

DOE Patents (OSTI)

A process for controlling the heating of a thin-walled body according to a predetermined temperature program by means of electrically controllable heaters, comprising: disposing the heaters adjacent one surface of the body such that each heater is in facing relation with a respective zone of the surface; supplying heat-generating power to each heater and monitoring the temperature at each surface zone; and for each zone: deriving (16,18,20), on the basis of the temperature values obtained in the monitoring step, estimated temperature values of the surface at successive time intervals each having a first selected duration; generating (28), on the basis of the estimated temperature values derived in each time interval, representations of the temperature, THSIFUT, which each surface zone will have, based on the level of power presently supplied to each heater, at a future time which is separated from the present time interval by a second selected duration; determining (30) the difference between THSIFUT and the desired temperature, FUTREFTVZL, at the future time which is separated from the present time interval by the second selected duration; providing (52) a representation indicating the power level which sould be supplied to each heater in order to reduce the difference obtained in the determining step; and adjusting the power level supplied to each heater by the supplying step in response to the value of the representation provided in the providing step.

Kothmann, Richard E. (Churchill Boro, PA); Booth, Jr., Russell R. (Elizabeth Twp., PA); Grimm, Noel P. (Monroeville, PA); Batenburg, Abram (Greensburg, PA); Thomas, Vaughn M. (Allison Park, PA)

1992-01-01T23:59:59.000Z

465

Evaluation of body sensor network platforms: a design space and benchmarking analysis  

Science Conference Proceedings (OSTI)

Body Sensor Networks (BSNs) consist of sensor nodes deployed on the human body for health monitoring. Each sensor node is implemented by interfacing a physiological sensor with a sensor platform consisting of components such as microcontroller, radio ... Keywords: benchmark, body sensor networks, design space, hardware systems, system performance, wearable BSNs

Sidharth Nabar; Ayan Banerjee; Sandeep K. S. Gupta; Radha Poovendran

2010-10-01T23:59:59.000Z

466

KALwEN: a new practical and interoperable key management scheme for body sensor networks  

Science Conference Proceedings (OSTI)

Key management is the pillar of a security architecture. Body sensor networks (BSNs) pose several challengessome inherited from wireless sensor networks (WSNs), some unique to themselvesthat require a new key management scheme to be tailor-made. ... Keywords: body area networks, body sensor networks, healthcare, key management, security

Yee Wei Law; Giorgi Moniava; Zheng Gong; Pieter Hartel; Marimuthu Palaniswami

2011-11-01T23:59:59.000Z

467

2HOT: an improved parallel hashed oct-tree n-body algorithm for cosmological simulation  

Science Conference Proceedings (OSTI)

We report on improvements made over the past two decades to our adaptive treecode N-body method (HOT). A mathematical and computational approach to the cosmological N-body problem is described, with performance and scalability measured up to 256k (218) ... Keywords: N-body, computational cosmology, fast multipole method

Michael S. Warren

2013-11-01T23:59:59.000Z

468

A mixed reality system for teaching STEM content using embodied learning and whole-body metaphors  

Science Conference Proceedings (OSTI)

This paper describes the development of an MR environment that can be used in teaching STEM (Science, Technology, Engineering, and Mathematics) topics. Specifically we seek to create a space for facilitating whole-body metaphors where learners use the ... Keywords: educational game, embodied learning, mixed reality, sensor fusion, whole-body interaction, whole-body metaphors

Remo Pillat; Arjun Nagendran; Robb Lindgren

2012-12-01T23:59:59.000Z

469

Energy-aware Gateway Selection for Increasing the Lifetime of Wireless Body Area Sensor Networks  

Science Conference Proceedings (OSTI)

A Wireless Body Area Sensor Network (WBASN) is composed of a set of sensor nodes, placed on, near or within a human body. WBASNs opt to continuously monitor the health conditions of individuals under medical risk, e.g., elders and chronically ill people, ... Keywords: Energy harvesting, Gateway selection algorithm, Network lifetime, Selective engagement of nodes, Wireless Body Area Sensor Networks (WBASN)

Cuneyt Bayilmis; Mohamed Younis

2012-06-01T23:59:59.000Z

470

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

SciTech Connect

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

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

2012-07-09T23:59:59.000Z

471

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

E-Print Network (OSTI)

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

Forati, Ebrahim

2013-01-01T23:59:59.000Z

472

FaCE: a tool for Three Body Faddeev calculations with core excitation  

E-Print Network (OSTI)

FaCE is a self contained programme, with namelist input, that solves the three body Faddeev equations. It enables the inclusion of excitation of one of the three bodies, whilst the other two remain inert. It is particularly useful for obtaining the binding energies and bound state structure compositions of light exotic nuclei treated as three-body systems, given the three effective two body interactions. A large variety of forms for these interactions may be defined, and supersymmetric transformations of these potentials may be calculated whenever two body states need to be removed due to Pauli blocking.

I. J. Thompson; F. M. Nunes; B. V. Danilin

2004-06-22T23:59:59.000Z

473

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

E-Print Network (OSTI)

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

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

2013-02-18T23:59:59.000Z

474

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

DOE Green Energy (OSTI)

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

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

1987-01-01T23:59:59.000Z

475

Many Body Physics with Coupled Transmission Line Resonators  

E-Print Network (OSTI)

We present the Josephson junction intersected superconducting transmission line resonator. In contrast to the Josephson parametric amplifier, Josephson bifurcation amplifier and Josephson parametric converter we consider the regime of few microwave photons. We review the derivation of eigenmode frequencies and zero point fluctuations of the nonlinear transmission line resonator and the derivation of the eigenmode Kerr nonlinearities. Remarkably these nonlinearities can reach values comparable to Transmon qubits rendering the device ideal for accessing the strongly correlated regime. This is particularly interesting for investigation of quantum many-body dynamics of interacting particles under the influence of drive and dissipation. We provide current profiles for the device modes and investigate the coupling between resonators in a network of nonlinear transmission line resonators.

Martin Leib; Michael J. Hartmann

2012-08-01T23:59:59.000Z

476

Composite materials and bodies including silicon carbide and titanium diboride and methods of forming same  

DOE Patents (OSTI)

Methods of forming composite materials include coating particles of titanium dioxide with a substance including boron (e.g., boron carbide) and a substance including carbon, and reacting the titanium dioxide with the substance including boron and the substance including carbon to form titanium diboride. The methods may be used to form ceramic composite bodies and materials, such as, for example, a ceramic composite body or material including silicon carbide and titanium diboride. Such bodies and materials may be used as armor bodies and armor materials. Such methods may include forming a green body and sintering the green body to a desirable final density. Green bodies formed in accordance with such methods may include particles comprising titanium dioxide and a coating at least partially covering exterior surfaces thereof, the coating comprising a substance including boron (e.g., boron carbide) and a substance including carbon.

Lillo, Thomas M.; Chu, Henry S.; Harrison, William M.; Bailey, Derek

2013-01-22T23:59:59.000Z

477

Midplane sedimentation of large solid bodies in turbulent protoplanetary discs  

E-Print Network (OSTI)

We study the vertical settling of solid bodies in a turbulent protoplanetary disc. We consider the situation when the coupling to the gas is weak or equivalently when the particle stopping time tau_{st} due to friction with the gas is long compared to the orbital timescale Omega^{-1}. An analytical model, which takes into account the stochastic nature of the sedimentation process using a Fokker-Planck equation for the particle distribution function in phase space, is used to obtain the vertical scale height of the solid layer as a function of the vertical component of the turbulent gas velocity correlation function and the particle stopping time. This is found to be of the same form as the relation obtained for strongly coupled particles in previous work. We compare the predictions of this model with results obtained from local shearing box MHD simulations of solid particles embedded in a vertically stratified disc in which there is turbulence driven by the MRI. We find that the ratio of the dust disc thickness to the gas disc thickness satifies H_d/H=0.08 (Omega tau_{st})^{-1/2}, which is in very good agreement with the analytical model. By discussing the conditions for gravitational instability in the outer regions of protoplanetary discs in which there is a similar level of turbulence, we find that bodies in the size range 50 to 600 metres can aggregate to form Kuiper belt-like objects with characteristic radii ranging from tens to hundreds of kilometres.

A. Carballido; S. Fromang; J. Papaloizou

2006-10-03T23:59:59.000Z

478

Characterization of coupled body response in random sea  

E-Print Network (OSTI)

The frequent use of two or more closely positioned vessels during offshore operations makes the study of multi-body hydrodynamics an important topic, especially for the design of deepwater offshore systems. This research investigation studies the response behavior of a coupled mini-TLP / barge system in both head and beam sea conditions. The design sea conditions were selected to represent the combined wind, wave and current conditions for a target location off the coast of West Africa. Both the