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Note: This page contains sample records for the topic "vertical cross-polar channel" from the National Library of EnergyBeta (NLEBeta).
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1

Heat and mass transfer of moist air in vertical channels  

SciTech Connect

Natural convection heat transfer in vertical open channel flows has been widely studied for various geometric configurations since it concerns a number of applications, ranging from the cooling of electronic equipment to the heating of buildings. This study examines energy transport associated with liquid film condensation or evaporation in natural convection flows driven by differences in density due to temperature and concentration gradients. The most common compositional gradient which is encountered in humid air is considered. A steady, laminar, Boussinesq flow of an ideal gas-vapor mixture is studied for the case of a vertical open plane channel. The influence of the species interdiffusion due to enthalpy difference between air and water vapor is considered first in the case of evaporation. It is shown that the species interdiffusion term is negligible even at moderate temperature differences. This study mainly investigates wall condensation of humid air and preliminary results are presented.

Desrayaud, G.; Garnier, V.; Lauriat, G.

1999-07-01T23:59:59.000Z

2

24-CHANNEL GEOPHONE ARRAY FOR HORIZONTAL OR VERTICAL BOREHOLES  

SciTech Connect

Improved ground-imaging capabilities have enormous potential to increase energy, environmental, and economic benefits by improving exploration accuracy and reducing energy consumption during the mining cycle. Seismic tomography has been used successfully to monitor and evaluate geologic conditions ahead of a mining face. A primary limitation to existing seismic tomography, however, is the placement of sensors. The goal of this project is to develop an array of 24 seismic sensors capable of being mounted in either a vertical or horizontal borehole. Development of this technology reduces energy usage in excavation, transportation, ventilation, and processing phases of the mining operation because less waste is mined and the mining cycle suffers fewer interruptions. This new technology benefits all types of mines, including metal/nonmetal, coal, and quarrying. The primary research tasks focused on sensor placement method, sensor housing and clamping design, and cabling and connector selection. An initial design is described in the report. Following assembly, a prototype was tested in the laboratory as well as at a surface stone quarry. Data analysis and tool performance were used for subsequent design modifications. A final design is described, of which several components are available for patent application. Industry partners have shown clear support for this research and demonstrated an interest in commercialization following project completion.

Erik C. Westman

2003-10-24T23:59:59.000Z

3

An experimental investigation of binary solidification in a vertical channel with thermal and solutal mixed convection  

SciTech Connect

Experimental measurements and photographic observations are presented for the solidification of a binary, aqueous ammonium chloride solution in a vertical channel. Transient liquidus front progressions and temperature measurements are used to characterize the influences of flow rate, superheat, composition, and chill wall temperature on binary phase-change behavior. Experimental results are compared with previously reported model predictions and discrepancies are used to critically assess model assumptions and limitations.

Bennon, W.D. (Aluminum Company of America, Alcoa Center, PA 15069 (USA)); Incropera, F.P. (Heat Transfer Laboratory, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907 (USA))

1989-08-01T23:59:59.000Z

4

Influence of variable property effects on natural convection flows in asymmetrically-heated vertical channels  

SciTech Connect

The influence of variable property effects on the laminar air flow induced by natural convection in a vertical, asymmetrically-heated channel is investigated. A full-elliptic model that accounts for variations of viscosity and thermal conductivity with temperature and determines the density from the state equation, has been solved numerically for cases for which variable property effects are important, particularly for conditions for which flow reversals may appear. The corresponding numerical results are compared with those obtained from an alternative model in which all thermophysical properties are assumed to be constant and the Boussinesq approximation is used. It has been found that variable property effects have a strong influence, not reported in previous works, on the recirculation patterns, and may produce, for certain ranges of parameters that roughly coincide with those for which flow reversals exist, an increase in the mass flow rate induced in the channel.

Zamora, B. [Univ. de Murcia (Spain)] [Univ. de Murcia (Spain); Hernandez, J. [Ciudad Universitaria, Madrid (Spain)] [Ciudad Universitaria, Madrid (Spain)

1997-12-01T23:59:59.000Z

5

Convective heat transfer in the vertical channel flow of a clear fluid adjacent to a nanofluid layer: a two-fluid model  

Science Journals Connector (OSTI)

A two-fluid vertical channel flow and convective heat transfer model in which one of the two fluids is a nanofluid demonstrates that the nanofluid can modify the fluid velocity at the interface of the two fluids,...

Robert A. Van Gorder; K. V. Prasad; K. Vajravelu

2012-07-01T23:59:59.000Z

6

The geoelectric eld at Vostok, Antarctica: its relation to the interplanetary magnetic eld and the cross polar cap  

E-Print Network (OSTI)

Laboratory, University of Michigan, Ann Arbor, Michigan, 48109-2143, USA d Department of Physics, University. No signi®cant association with IMF Bx is found. The interaction of the solar wind and the Earth's magnetic with the cross polar cap potential dierence is independent of a result (Park, 1976. Solar magnetic sector eects

Michigan, University of

7

Sensitivity Enhancement in Solid-State Separated Local Field NMR Experiments by the Use of Adiabatic Cross-Polarization  

Science Journals Connector (OSTI)

Measurement of dipolar couplings using separated local field (SLF) NMR experiment is a powerful tool for structural and dynamics studies of oriented molecules such as liquid crystals and membrane proteins in aligned lipid bilayers. ... Enhancing the sensitivity of such SLF techniques is of significant importance in present-day solid-state NMR methodology. ... The present study considers the use of adiabatic cross-polarization for this purpose, which is applied for the first time to one of the well-known SLF techniques, namely, polarization inversion spin exchange at the magic angle (PISEMA). ...

Nitin P. Lobo; Krishna V. Ramanathan

2011-04-28T23:59:59.000Z

8

A study of the order-disorder, solid-solid phase transition of (+)-camphor using nuclear magnetic resonance with cross-polarization and magic-angle spinning  

E-Print Network (OSTI)

Parameters in the Rotating Frame . 52 a. Proton Spin-Lattice Relaxation in the Rotating Frame. . . 52 b. T and Contact Time. CH c. Carbon Spin-Lattice Relaxation in the Rotating Frame. 53 54 d. Adiabatic Demagnetization in the Rotating Frame. 56 2... the orientation of the magic-angle sample spinning with respect to B 0 Figure 1. 9. Illustrates the pulse sequence used for cross-polarization. S. L. represents the proton spin-lock time. . 39 . 45 Figure 1. 10. Depicts the cross-polarization process as a...

Crook, Russell Allan

2012-06-07T23:59:59.000Z

9

Measuring vertical tectonic motion at the intersection of the Santa Cruz–Catalina Ridge and Northern Channel Islands platform, California Continental Borderland, using submerged paleoshorelines  

Science Journals Connector (OSTI)

...Locations of DELTA submersible dives made on...Channel Islands platform and Santa Cruza...Channel Islands platform, specifically...of numerous submersible dives because...parallel and semi-parallel to...observed during submersible dives on the...Channel Islands platform and Pilgrim...

Jason D. Chaytor; Chris Goldfinger; Melissa A. Meiner; Gary J. Huftile; Christopher G. Romsos; Mark R. Legg

10

Forbidden vertices  

E-Print Network (OSTI)

Abstract. In this work, we introduce and study the forbidden-vertices problem. Given a polytope P and a subset X of its vertices, we study the complexity of linear ...

2014-03-01T23:59:59.000Z

11

Enhancing cross-peak intensity in 2D-SLF spectroscopy – The role of equilibrium carbon magnetization in cross-polarization experiment  

Science Journals Connector (OSTI)

A modification to the standard Hartmann–Hahn cross-polarization experiment has been proposed in which the initial 90° pulses are applied both on the I and S spins. The inclusion of the available equilibrium polarization in the static magnetic field for the S spins is shown to have a beneficial effect for the 2D-SLF experiment, contributing to an increase in the cross-peak intensity and hence to a better resolution of the dipolar cross-peaks.

Bibhuti B. Das; T.G. Ajithkumar; K.V. Ramanathan

2006-01-01T23:59:59.000Z

12

Constructal multi-scale package of vertical channels with natural convection and maximal heat transfer density. CONSTRUCTAL DESIGN: THE GENERATION OF MULTI-SCALE HEAT  

E-Print Network (OSTI)

transfer density. CONSTRUCTAL DESIGN: THE GENERATION OF MULTI-SCALE HEAT AND FLUID FLOW STRUCTURES-scale structures in natural convection with the objective of maximizing the heat transfer density, or the heat transfer rate per unit of volume§ . The flow volume is filled with vertical equidistant heated blades

Kihm, IconKenneth David

13

Nonlinear Saturation of Vertically Propagating Rossby Waves  

E-Print Network (OSTI)

The interaction between vertical Rossby wave propagation and wave breaking is studied in the idealized context of a beta-plane channel model. Considering the problem of propagation through a uniform zonal flow in an ...

Giannitsis, Constantine

14

Cross- and axial-peak intensities in 2D-SLF experiments based on cross-polarization—The role of the initial density matrix  

Science Journals Connector (OSTI)

Simulations and experiments on simple oriented systems have been used to estimate the relative ratio of cross-peak to axial-peak intensities in 2D-SLF experiments based on dipolar oscillations during cross-polarization (CP). The density matrix prior to dipolar evolution is considered and for an isolated spin pair, it is shown that direct calculations of the ratios match well with simulations and experimental results. Along with the standard CP pulse sequence, two other pulse sequences namely CP with polarization inversion (PI–CP) and another novel variation of the standard CP experiment (EXE-CP) reported recently have been considered. Inclusion of homonuclear dipolar coupling has been observed to increase the axial-peak intensities. In combination with Lee–Goldburg (LG) decoupling, experiments on an oriented liquid crystalline sample have been carried out and the performance of the pulse schemes have been compared. The applicability of the new pulse sequence for different samples and different nuclei is discussed. Such studies are expected to lead to a better understanding of the experiments and to the design of useful pulse sequences.

Bibhuti B. Das; T.G. Ajithkumar; Neeraj Sinha; Stanley J. Opella; K.V. Ramanathan

2007-01-01T23:59:59.000Z

15

Vertical axis wind turbines  

DOE Patents (OSTI)

A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.

Krivcov, Vladimir (Miass, RU); Krivospitski, Vladimir (Miass, RU); Maksimov, Vasili (Miass, RU); Halstead, Richard (Rohnert Park, CA); Grahov, Jurij (Miass, RU)

2011-03-08T23:59:59.000Z

16

Vertical axis wind turbine  

SciTech Connect

Wind turbines are largely divided into vertical axis wind turbines and propeller (Horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with a starting and braking control system. This vertical axis wind turbine is formed by having blades of a proper airfoil fitted to respective supporting arms provided radially from a vertical rotary axis by keeping the blade span-wise direction in parallel with the axis and being provided with a low speed control windmill in which the radial position of each operating piece varies with a centrifugal force produced by the rotation of the vertical rotary axis.

Kato, Y.; Seki, K.; Shimizu, Y.

1981-01-27T23:59:59.000Z

17

Vertical axis wind turbine  

SciTech Connect

Wind turbines are largely divided into vertical axis wind turbines and propeller (Horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with rotational speed control systems. This vertical axis wind turbine is formed by having blades of a proper airfoil fitted to respective supporting arms provided radially from a vertical rotating shaft by keeping the blade span-wise direction in parallel with the shaft and being provided with aerodynamic control elements operating manually or automatically to control the rotational speed of the turbine.

Kato, Y.; Seki, K.; Shimizu, Y.

1981-01-27T23:59:59.000Z

18

ARM - Measurement - Vertical velocity  

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

govMeasurementsVertical velocity govMeasurementsVertical velocity ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Vertical velocity The component of the velocity vector, along the local vertical. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System KAZR : Ka ARM Zenith Radar MMCR : Millimeter Wavelength Cloud Radar SODAR : Mini Sound Detection and Ranging

19

Micromachined electrostatic vertical actuator  

DOE Patents (OSTI)

A micromachined vertical actuator utilizing a levitational force, such as in electrostatic comb drives, provides vertical actuation that is relatively linear in actuation for control, and can be readily combined with parallel plate capacitive position sensing for position control. The micromachined electrostatic vertical actuator provides accurate movement in the sub-micron to micron ranges which is desirable in the phase modulation instrument, such as optical phase shifting. For example, compact, inexpensive, and position controllable micromirrors utilizing an electrostatic vertical actuator can replace the large, expensive, and difficult-to-maintain piezoelectric actuators. A thirty pound piezoelectric actuator with corner cube reflectors, as utilized in a phase shifting diffraction interferometer can be replaced with a micromirror and a lens. For any very precise and small amplitudes of motion` micromachined electrostatic actuation may be used because it is the most compact in size, with low power consumption and has more straightforward sensing and control options.

Lee, Abraham P. (Walnut Creek, CA); Sommargren, Gary E. (Santa Cruz, CA); McConaghy, Charles F. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA)

1999-10-19T23:59:59.000Z

20

Vertical Velocity Focus Group  

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

Velocity Focus Group Velocity Focus Group ARM 2008 Science Team Meeting Norfolk, VA March 10-14 Background Vertical velocity measurements have been at the top of the priority list of the cloud modeling community for some time. Doppler measurements from ARM profiling radars operating at 915-MHz, 35-GHz and 94-GHz have been largely unexploited. The purpose of this new focus group is to develop vertical velocity ARM products suitable for modelers. ARM response to their request has been slow. Most ARM instruments are suitable for cloud observations and have limited capabilities in precipitation Using ARM datasets for evaluating and improving cloud parameterization in global climate models (GCMs) is not straightforward, due to gigantic scale mismatches. Consider this... Looking only vertically drastically limits opportunities

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Sidewall containment of liquid metal with vertical alternating magnetic fields  

DOE Patents (OSTI)

An apparatus is disclosed for containing molten metal using a magnet producing vertical alternating magnetic field positioned adjacent the area in which the molten metal is to be confined. This invention can be adapted particularly to the casting of metal between counter-rotating rollers with the vertical alternating magnetic field used to confine the molten metal at the edges of the rollers. Alternately, the vertical alternating magnetic field can be used as a flow regulator in casting molten metal from an opening in a channel. 9 figs.

Lari, R.J.; Praeg, W.F.; Turner, L.R.; Battles, J.E.; Hull, J.R.; Rote, D.M.

1990-12-04T23:59:59.000Z

22

Sidewall containment of liquid metal with vertical alternating magnetic fields  

DOE Patents (OSTI)

An apparatus for containing molten metal using a magnet producing vertical alternating magnetic field positioned adjacent to the area in which the molten metal is to be confined. This invention can be adapted particularly to the casting of metal between counter-rotating rollers with the vertical alternating magnetic field used to confine the molten metal at the edges of the rollers. Alternately, the vertical alternating magnetic field can be used as a flow regulator in casting molten metal from an opening in a channel. 8 figs.

Lari, R.J.; Praeg, W.F.; Turner, L.R.; Battles, J.E.; Hull, J.R.; Rote, D.M.

1988-06-17T23:59:59.000Z

23

E-Print Network 3.0 - ancient fluvial channel Sample Search Results  

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

Some... changes in fluvial channel continuity, and vertical changes in porosity and permeability characteristic... , 1994; Greb & Chesnut, 1996; Els & Mayer, 1998; Lanier &...

24

MRI channel flows in vertically stratified models of accretion discs  

Science Journals Connector (OSTI)

......Numerical setup We used the MHD codes ramses (Teyssier 2002...eigenmodes. A space-time diagram of the density field rho for...2000). Figure 3 Space-time diagram of the gas density in a simulation...in Fig. 5, a space-time diagram for the density in the case......

Henrik N. Latter; Sebastien Fromang; Oliver Gressel

2010-08-01T23:59:59.000Z

25

The problem of vertical zoning  

Science Journals Connector (OSTI)

...deposits, genesis sheet silicates silicates talc United States Vermont Vertical zoning GeoRef, Copyright 2012, American Geosciences...levelgivingasmuchas29ouncesofgold per ton." Similar descriptionsof the Yankee Girl and other minesin the districtconvincinglydemonstrateverticalchangesin...

Charles Frederick Park

26

Secular Sediment Waves, Channel Bed Waves, and Legacy Sediment  

E-Print Network (OSTI)

Secular Sediment Waves, Channel Bed Waves, and Legacy Sediment L. Allan James* Geography Department, University South Carolina Abstract The concept of sediment waves is reviewed and clarifications are proposed for nomenclature con- cerning vertical channel responses to large fluvial sediment fluxes over a period of a decade

James, L. Allan

27

Vertical axis wind turbine acoustics  

E-Print Network (OSTI)

Vertical Axis Wind Turbine Acoustics Charlie Pearson Corpus Christi College Cambridge University Engineering Department A thesis submitted for the degree of Doctor of Philosophy September 2013 Declaration Described in this dissertation is work... quickly to changing wind conditions, small- scale vertical axis wind turbines (VAWTs) have been proposed as an efficient solution for deployment in built up areas, where the wind is more gusty in nature. If VAWTs are erected in built up areas...

Pearson, Charlie

2014-04-08T23:59:59.000Z

28

Carderock Circulating Water Channel | Open Energy Information  

Open Energy Info (EERE)

Circulating Water Channel Circulating Water Channel Jump to: navigation, search Basic Specifications Facility Name Carderock Circulating Water Channel Overseeing Organization United States Naval Surface Warfare Center Hydrodynamic Testing Facility Type Channel Length(m) 18.3 Beam(m) 6.7 Depth(m) 2.7 Water Type Freshwater Cost(per day) Contact POC Special Physical Features The Circulating Water Channel is a vertical plane, open to the atmosphere test section with a free surface in a closed recirculating water circuit, variable speed, rectangular cross-sectional shape facility. There are 10 large viewing windows on either side of the test section at different elevations and 9 in the bottom; movable bridge spans the test section for ease and versatility in mounting models, rigging bridge is capable of taking towing loads at any one of numerous points up to 35,584 N

29

Vertical integration and market power  

SciTech Connect

One of the continuing debates of industrial organization surrounds the importance of market structure in determining a firm's performance. This controversy develops naturally from the difficulties in measuring the relevant variables and the hazards of statistical analysis. The focus of this empirical study is the relationship between vertical integration, as an element of market structure, and market power, as a component of a firm's performance. The model presented in this paper differs from previous efforts because vertical integration is measured by the Vertical Industry Connections (VIC) index. VIC is defined as a function of the relative net interactions among the industries in which a firm operates, and is calculated by use of the national input-output tables. A linear regression model is estimated by means of a random sample of firms selected from the Standard and Poor's COMPUSTAT data base for 1963, 1967, and 1972. Combined cross-sectional, time-series methods are employed. The dependent variable is the price-cost margin; the independent variables include not only VIC, but also the concentration ratio, diversification index, value of assets, capital-output ratio, and sales growth. The results indicate that VIC is significant in increasing the price-cost margin, and thus support the hypothesis that vertical integration is a strategy to enhance market power. 1 figure, 3 tables.

Maddigan, R.J.

1980-01-01T23:59:59.000Z

30

Vertically Integrated Circuits at Fermilab  

SciTech Connect

The exploration of the vertically integrated circuits, also commonly known as 3D-IC technology, for applications in radiation detection started at Fermilab in 2006. This paper examines the opportunities that vertical integration offers by looking at various 3D designs that have been completed by Fermilab. The emphasis is on opportunities that are presented by through silicon vias (TSV), wafer and circuit thinning and finally fusion bonding techniques to replace conventional bump bonding. Early work by Fermilab has led to an international consortium for the development of 3D-IC circuits for High Energy Physics. The consortium has submitted over 25 different designs for the Fermilab organized MPW run organized for the first time.

Deptuch, Grzegorz; Demarteau, Marcel; Hoff, James; Lipton, Ronald; Shenai, Alpana; Trimpl, Marcel; Yarema, Raymond; Zimmerman, Tom; /Fermilab

2009-01-01T23:59:59.000Z

31

Kinematic Fitting of Detached Vertices  

SciTech Connect

The eg3 experiment at the Jefferson Lab CLAS detector aims to determine the existence of the $\\Xi_{5}$ pentaquarks and investigate the excited $\\Xi$ states. Specifically, the exotic $\\Xi_{5}^{--}$ pentaquark will be sought by first reconstructing the $\\Xi^{-}$ particle through its weak decays, $\\Xi^{-}\\to\\pi^{-}\\Lambda$ and $\\Lambda\\to\\pi^{-}$. A kinematic fitting routine was developed to reconstruct the detached vertices of these decays, where confidence level cuts on the fits are used to remove background events. Prior to fitting these decays, the exclusive reaction $\\gamma D\\rightarrow pp\\pi^{-}$ was studied in order to correct the track measurements and covariance matrices of the charged particles. The $\\Lambda\\rightarrow p\\pi^{-}$ and $\\Xi^{-}\\to\\pi^{-}\\Lambda$ decays were then investigated to demonstrate that the kinematic fitting routine reconstructs the decaying particles and their detached vertices correctly.

Paul Mattione

2007-05-01T23:59:59.000Z

32

Vertical Integration and Technology: Theory and Evidence  

E-Print Network (OSTI)

We study the determinants of vertical integration. We first derive a number of predictions regarding the relationship between technology intensity and vertical integration from a simple incomplete contracts model. Then, ...

Acemoglu, Daron

33

Capacity of steganographic channels  

Science Journals Connector (OSTI)

An information-theoretic approach is used to determine the amount of information that may be safely transferred over a steganographic channel with a passive adversary. A steganographic channel, or stego-channel is a pair consisting of the channel transition ... Keywords: information spectrum, information theory, steganalysis, steganographic capacity, steganography, stego-channel

Jeremiah J. Harmsen; William A. Pearlman

2005-08-01T23:59:59.000Z

34

Vertical Circuits Inc | Open Energy Information  

Open Energy Info (EERE)

Circuits Inc Circuits Inc Jump to: navigation, search Name Vertical Circuits, Inc. Place Scotts Valley, California Zip 95066 Sector Services Product Vertical Circuits Inc. is a global supplier of advanced die level vertical interconnect packaging technology, products, services and intellectual property for the manufacture of low cost ultra high-speed/high-density semiconductor components. References Vertical Circuits, Inc.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Vertical Circuits, Inc. is a company located in Scotts Valley, California . References ↑ "Vertical Circuits, Inc." Retrieved from "http://en.openei.org/w/index.php?title=Vertical_Circuits_Inc&oldid=352802"

35

Vertical feed stick wood fuel burning furnace system  

DOE Patents (OSTI)

A new and improved stove or furnace for efficient combustion of wood fuel including a vertical feed combustion chamber for receiving and supporting wood fuel in a vertical attitude or stack, a major upper portion of the combustion chamber column comprising a water jacket for coupling to a source of water or heat transfer fluid and for convection circulation of the fluid for confining the locus of wood fuel combustion to the bottom of the vertical gravity feed combustion chamber. A flue gas propagation delay channel extending from the laterally directed draft outlet affords delayed travel time in a high temperature environment to assure substantially complete combustion of the gaseous products of wood burning with forced air as an actively induced draft draws the fuel gas and air mixture laterally through the combustion and high temperature zone. Active sources of forced air and induced draft are included, multiple use and circuit couplings for the recovered heat, and construction features in the refractory material substructure and metal component superstructure.

Hill, Richard C. (Orono, ME)

1984-01-01T23:59:59.000Z

36

Construction of Channels (Indiana)  

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

Permission is required from the Natural Resources Commission is required for the construction or alteration of artificial channels or improved channels of natural watercourses that connect to any...

37

Channel | Open Energy Information  

Open Energy Info (EERE)

Channel Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleChannel&oldid596209" Category: Hydrodynamic Testing Facility Type...

38

Wind speed vertical distribution at Mt Graham  

Science Journals Connector (OSTI)

......October 2010 research-article Papers Wind speed vertical distribution at Mt Graham...characterization of the vertical distribution of wind speed, V(h), is fundamental for an...many different reasons: (i) the wind speed shear contributes to trigger optical......

S. Hagelin; E. Masciadri; F. Lascaux

2010-10-01T23:59:59.000Z

39

ARM - Evaluation Product - Convective Vertical Velocity  

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

ProductsConvective Vertical Velocity ProductsConvective Vertical Velocity Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Convective Vertical Velocity 2011.04.25 - 2011.05.23 Site(s) SGP General Description Convective processes play an important role in Earth's energy balance by distributing heat and moisture throughout the atmosphere. In particular, vertical air motions associated with these processes are inherently linked to the life cycle of these convective systems and are therefore directly tied to their energy budget. However, direct measurements of vertical air motions (e.g., in situ aircraft observations) are sparse, making it difficult to compare them with numerical model output, which relies on convective parameterization schemes that have yet to be extensively

40

Vertical Flowmeter Test | Open Energy Information  

Open Energy Info (EERE)

Vertical Flowmeter Test Vertical Flowmeter Test Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Vertical Flowmeter Test Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Well Testing Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Define permeable zones within a well Thermal: Dictionary.png Vertical Flowmeter Test: A well testing technique done upon completion of a well to identify locations of permeable zones within the well and to quantify the relative permeability of each zone. Other definitions:Wikipedia Reegle Introduction A vertical flowmeter test is also known as a spinner test and is preformed

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Electron-electron interaction, weak localization and spin valve effect in vertical-transport graphene devices  

SciTech Connect

We fabricated a vertical structure device, in which graphene is sandwiched between two asymmetric ferromagnetic electrodes. The measurements of electron and spin transport were performed across the combined channels containing the vertical and horizontal components. The presence of electron-electron interaction (EEI) was found not only at low temperatures but also at moderate temperatures up to ?120?K, and EEI dominates over weak localization (WL) with and without applying magnetic fields perpendicular to the sample plane. Moreover, spin valve effect was observed when magnetic filed is swept at the direction parallel to the sample surface. We attribute the EEI and WL surviving at a relatively high temperature to the effective suppress of phonon scattering in the vertical device structure. The findings open a way for studying quantum correlation at relatively high temperature.

Long, Mingsheng; Gong, Youpin; Wei, Xiangfei; Zhu, Chao; Xu, Jianbao; Liu, Ping; Guo, Yufen; Li, Weiwei; Liu, Liwei, E-mail: lwliu2007@sinano.ac.cn [Key Laboratory of Nanodevices and Applications-CAS and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123 (China); Liu, Guangtong [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2014-04-14T23:59:59.000Z

42

Ion Channels as Devices  

Science Journals Connector (OSTI)

Ion channels are proteins with a hole down ... biological function. Channels are devices in the engineering sense of the word and engineering analysis helps understand their function. In particular ... The curren...

Bob Eisenberg

2003-12-01T23:59:59.000Z

43

Vertical feed stick wood fuel burning furnace system  

DOE Patents (OSTI)

A stove or furnace for efficient combustion of wood fuel includes a vertical feed combustion chamber (15) for receiving and supporting wood fuel in a vertical attitude or stack. A major upper portion of the combustion chamber column comprises a water jacket (14) for coupling to a source of water or heat transfer fluid for convection circulation of the fluid. The locus (31) of wood fuel combustion is thereby confined to the refractory base of the combustion chamber. A flue gas propagation delay channel (34) extending laterally from the base of the chamber affords delayed travel time in a high temperature refractory environment sufficient to assure substantially complete combustion of the gaseous products of wood burning with forced air prior to extraction of heat in heat exchanger (16). Induced draft draws the fuel gas and air mixture laterally through the combustion chamber and refractory high temperature zone to the heat exchanger and flue. Also included are active sources of forced air and induced draft, multiple circuit couplings for the recovered heat, and construction features in the refractory material substructure and metal component superstructure.

Hill, Richard C. (Orono, ME)

1982-01-01T23:59:59.000Z

44

Vertical Electrical Sounding Configurations | Open Energy Information  

Open Energy Info (EERE)

Vertical Electrical Sounding Configurations Vertical Electrical Sounding Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Vertical Electrical Sounding Configurations Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Direct-Current Resistivity Survey Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

45

Vertical Seismic Profiling | Open Energy Information  

Open Energy Info (EERE)

Vertical Seismic Profiling Vertical Seismic Profiling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Vertical Seismic Profiling Details Activities (4) Areas (3) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Borehole Seismic Techniques Parent Exploration Technique: Borehole Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

46

Subsurface imaging with reverse vertical seismic profiles  

E-Print Network (OSTI)

This thesis presents imaging results from a 3D reverse vertical seismic profile (RVSP) dataset measured at a hydrocarbon bearing pinnacle reef in northern Michigan. The study presented many challenges in seismic data ...

Krasovec, Mary L. (Mary Lee), 1972-

2001-01-01T23:59:59.000Z

47

Continuous Growth of Vertically Aligned Carbon Nanotubes  

E-Print Network (OSTI)

Vertically aligned carbon nanotubes (VACNTs), sometimes called forests or carpets, are a promising material due to their unique physical and scale-dependent physical properties [1-3]. Continuous production of VACNTs is ...

Guzman de Villoria, R.

48

Vertical Axis Wind Turbine Foundation parameter study  

SciTech Connect

The dynamic failure criterion governing the dimensions of prototype Vertical Axis Wind Turbine Foundations is treated as a variable parameter. The resulting change in foundation dimensions and costs is examined.

Lodde, P.F.

1980-07-01T23:59:59.000Z

49

Vertical Flowmeter Logging | Open Energy Information  

Open Energy Info (EERE)

Flowmeter Logging Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Vertical Flowmeter Logging Author U.S. Geological Survey Published USGS Groundwater...

50

Sandia National Laboratories: Innovative Offshore Vertical-Axis...  

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

WindInnovative Offshore Vertical-Axis Wind Turbine Rotors Innovative Offshore Vertical-Axis Wind Turbine Rotors This project seeks to advance large offshore vertical-axis wind...

51

Category:Vertical Flowmeter Test | Open Energy Information  

Open Energy Info (EERE)

Category Edit History Facebook icon Twitter icon Category:Vertical Flowmeter Test Jump to: navigation, search Geothermalpower.jpg Looking for the Vertical Flowmeter Test page?...

52

Vertical Seismic Profiling At Rye Patch Area (DOE GTP, 2011)...  

Open Energy Info (EERE)

Vertical Seismic Profiling At Rye Patch Area (DOE GTP, 2011) Exploration Activity Details Location Rye Patch Area Exploration Technique Vertical Seismic Profiling Activity Date...

53

WHICH HYDRAULIC MODEL TO USE IN VERTICAL FLOW CONSTRUCTED WETLANDS?  

E-Print Network (OSTI)

WHICH HYDRAULIC MODEL TO USE IN VERTICAL FLOW CONSTRUCTED WETLANDS? Ania Morvannoua , Nicolas-equilibrium model, preferential flow path, vertical flow constructed wetlands INTRODUCTION Constructed wetlands (CWs

Paris-Sud XI, Université de

54

Definition: Vertical Electrical Sounding Configurations | Open Energy  

Open Energy Info (EERE)

Sounding Configurations Sounding Configurations Jump to: navigation, search Dictionary.png Vertical Electrical Sounding Configurations A vertical electrical sounding (VES) is a DC resistivity survey which provides information regarding the change in apparent resistivity with depth. A quantitative interpretation of the results from VES measurements enable determination of the parameters for the geoelectric section.[1] Also Known As VES; Schlumberger Sounding References ↑ http://www.nga.com/Flyers_PDF/NGA_DC_Resistivity.pdf http://www.amazon.com/Principles-Electric-Borehole-Geophysics-Geochemistry/dp/0444529942 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Vertical_Electrical_Sounding_Configurations&oldid=596183

55

A low order model for vertical axis wind turbines  

E-Print Network (OSTI)

A new computational model for initial sizing and performance prediction of vertical axis wind turbines

Drela, Mark

56

Quantum Channels with Memory  

E-Print Network (OSTI)

We present a general model for quantum channels with memory, and show that it is sufficiently general to encompass all causal automata: any quantum process in which outputs up to some time t do not depend on inputs at times t' > t can be decomposed into a concatenated memory channel. We then examine and present different physical setups in which channels with memory may be operated for the transfer of (private) classical and quantum information. These include setups in which either the receiver or a malicious third party have control of the initializing memory. We introduce classical and quantum channel capacities for these settings, and give several examples to show that they may or may not coincide. Entropic upper bounds on the various channel capacities are given. For forgetful quantum channels, in which the effect of the initializing memory dies out as time increases, coding theorems are presented to show that these bounds may be saturated. Forgetful quantum channels are shown to be open and dense in the set of quantum memory channels.

Dennis Kretschmann; Reinhard F. Werner

2005-02-17T23:59:59.000Z

57

Stochastic resonance for quantum channels  

Science Journals Connector (OSTI)

The concept of stochastic resonance in nonlinear dynamics is applied to interpret the capacity of noisy quantum channels. The two-Pauli channel is used to illustrate the idea. The fidelity of the channel is also considered. Noise enhancement is found for the channel fidelity but not for the channel capacity.

Julian Juhi-Lian Ting

1999-03-01T23:59:59.000Z

58

Athermalized channeled spectropolarimeter enhancement.  

SciTech Connect

Channeled spectropolarimetry can measure the complete polarization state of light as a function of wavelength. Typically, a channeled spectropolarimeter uses high order retarders made of uniaxial crystal to amplitude modulate the measured spectrum with the spectrally-dependent Stokes polarization information. A primary limitation of conventional channeled spectropolarimeters is related to the thermal variability of the retarders. Thermal variation often forces frequent system recalibration, particularly for field deployed systems. However, implementing thermally stable retarders, made of biaxial crystal, results in an athermal channeled spectropolarimeter that relieves the need for frequent recalibration. This report presents experimental results for an anthermalized channeled spectropolarimeter prototype produced using potassium titanyl phosphate. The results of this prototype are compared to the current thermal stabilization state of the art. Finally, the application of the technique to the thermal infrared is studied, and the athermalization concept is applied to an infrared imaging spectropolarimeter design.

Jones, Julia Craven; Way, Brandyn Michael; Mercier, Jeffrey Alan; Hunt, Jeffery P.

2013-09-01T23:59:59.000Z

59

Vertical Arc for ILC Low Emittance Transport  

SciTech Connect

The design and parameters of a vertical arc for the ILC Low Emittance Transport (LET) are reviewed. A 1 TeV CM ILC which relies upon 30 MV/m accelerating cavities with a packing fraction of 65% will require almost 48 km of main linac, which suggests that the total site length including BDS and bunch compressors will be on the order of 53 km. If built in a laser-straight tunnel with the low-energy ends near the surface, and assuming a perfectly spherical ''cue ball'' planetary surface with radius 6370 km, the collider halls will necessarily be 55 meters below grade, as shown in the top plot of Figure 1. Such depths would demand extensive use of deep tunneling, which would potentially drive up the cost and difficulty of ILC construction. An alternate solution is to use discrete vertical arcs at a few locations to allow a ''piecewise straight'' construction in which the depth of the tunnel below grade does not vary by more than a few meters. This approach is shown schematically in the bottom plot of Figure 1. In this Note we consider the issues for a design with one such vertical arc at the 250 GeV/c point (ie, midway down the linac for 1 TeV CM), and a second arc at the entrance to the BDS (ie, the entire BDS lies in one plane, with vertical arcs at each end).

Tenenbaum, P.; Woodley, M.; /SLAC

2005-06-07T23:59:59.000Z

60

Vertical pump with free floating check valve  

DOE Patents (OSTI)

A vertical pump with a bottom discharge having a free floating check valve isposed in the outlet plenum thereof. The free floating check valve comprises a spherical member with a hemispherical cage-like member attached thereto which is capable of allowing forward or reverse flow under appropriate conditions while preventing reverse flow under inappropriate conditions.

Lindsay, Malcolm (O'Hara Township, Allegheny County, PA)

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

PATTERI'JSOF VERTICAL AND REPRODUCIIONIN  

E-Print Network (OSTI)

of six corTrrno species of Hawaii-an Oplophoridae are presented. Trvo different patterns of adult conmon species lived above 7OO m and undervrent extensive vertical migrat-ions to shallorver rvaters aE of the adultsl the type of embryonic develop- mentl and Ehe amount of yolk in the embryo aE the time of hatching

Luther, Douglas S.

62

Category:Vertical Electrical Sounding Configurations | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Vertical Electrical Sounding Configurations Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Vertical Electrical Sounding Configurations page? For detailed information on Vertical Electrical Sounding Configurations as exploration techniques, click here. Category:Vertical Electrical Sounding Configurations Add.png Add a new Vertical Electrical Sounding Configurations Technique Pages in category "Vertical Electrical Sounding Configurations" The following 2 pages are in this category, out of 2 total.

63

Definition: Vertical Seismic Profiling | Open Energy Information  

Open Energy Info (EERE)

Profiling Profiling Jump to: navigation, search Dictionary.png Vertical Seismic Profiling Vertical Seismic Profile (VSP) is a technique of seismic measurements used for high resolution seismic imaging. It can also be used for correlation with surface seismic data providing velocity information and information for processing such as deconvolution parameters. The defining characteristic of a VSP is that the detectors are in a borehole.[1][2][3] View on Wikipedia Wikipedia Definition Also Known As Advanced Borehole Seismology (ABS), Related Terms Seismic Techniques, High Resolution Imaging and Monitoring References ↑ Bob Hardage VSP Principles ↑ High resolution 3D seismic imaging using 3C data from large downhole seismic arrays Paulsson et al. (2004) ↑ Mueller Soroka Paulsson (2010)

64

Method and apparatus for drilling horizontal holes in geological structures from a vertical bore  

DOE Patents (OSTI)

This invention is directed to a method and apparatus for drilling horizontal holes in geological strata from a vertical position. The geological structures intended to be penetrated in this fashion are coal seams, as for in situ gasification or methane drainage, or in oil-bearing strata for increasing the flow rate from a pre-existing well. Other possible uses for this device might be for use in the leaching of uranium ore from underground deposits or for introducing horizontal channels for water and steam injections.

Summers, David A. (Rolla, MO); Barker, Clark R. (Rolla, MO); Keith, H. Dean (Rolla, MO)

1982-01-01T23:59:59.000Z

65

Electrically floating, near vertical incidence, skywave antenna  

DOE Patents (OSTI)

An Electrically Floating, Near Vertical Incidence, Skywave (NVIS) Antenna comprising an antenna element, a floating ground element, and a grounding element. At least part of said floating ground element is positioned between said antenna element and said grounding element. The antenna is separated from the floating ground element and the grounding element by one or more electrical insulators. The floating ground element is separated from said antenna and said grounding element by one or more electrical insulators.

Anderson, Allen A.; Kaser, Timothy G.; Tremblay, Paul A.; Mays, Belva L.

2014-07-08T23:59:59.000Z

66

Wind speed vertical distribution at Mt. Graham  

E-Print Network (OSTI)

The characterization of the wind speed vertical distribution V(h) is fundamental for an astronomical site for many different reasons: (1) the wind speed shear contributes to trigger optical turbulence in the whole troposphere, (2) a few of the astroclimatic parameters such as the wavefront coherence time (tau_0) depends directly on V(h), (3) the equivalent velocity V_0, controlling the frequency at which the adaptive optics systems have to run to work properly, depends on the vertical distribution of the wind speed and optical turbulence. Also, a too strong wind speed near the ground can introduce vibrations in the telescope structures. The wind speed at a precise pressure (200 hPa) has frequently been used to retrieve indications concerning the tau_0 and the frequency limits imposed to all instrumentation based on adaptive optics systems, but more recently it has been proved that V_200 (wind speed at 200 hPa) alone is not sufficient to provide exhaustive elements concerning this topic and that the vertical d...

Hagelin, S; Lascaux, F

2010-01-01T23:59:59.000Z

67

Experimental Study on Heat Transfer of Single-Phase Flow and Boiling Two-Phase Flow in Vertical Narrow Annuli  

SciTech Connect

Water single-phase and nucleate boiling heat transfer were experimentally investigated in vertical annuli with narrow gaps. The experimental data about water single-phase flow and boiling two-phase flow heat transfer in narrow annular channel were accumulated by two test sections with the narrow gaps of 1.0 mm and 1.5 mm. Empirical correlations to predict the heat transfer of the single-phase flow and boiling two-phase flow in the narrow annular channel were obtained, which were arranged in the forms of the Dittus-Boelter for heat transfer coefficients in a single-phase flow and the Jens-Lottes formula for a boiling two-phase flow in normal tubes, respectively. The mechanism of the difference between the normal channel and narrow annular channel were also explored. From experimental results, it was found that the turbulent heat transfer coefficients in narrow gaps are nearly the same to the normal channel in the experimental range, and the transition Reynolds number from a laminar flow to a turbulent flow in narrow annuli was much lower than that in normal channel, whereas the boiling heat transfer in narrow annular gap was greatly enhanced compared with the normal channel. (authors)

Suizheng Qiu; Guanghui Su; Dounan Jia [Xi'an Jiaotong University, No.28, Xianning West Road, Xi'an, Shaanxi, 710049 (China); Minoru Takahashi [Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152 (Japan)

2002-07-01T23:59:59.000Z

68

Herrenknecht Vertical GmbH | Open Energy Information  

Open Energy Info (EERE)

Herrenknecht Vertical GmbH Herrenknecht Vertical GmbH Jump to: navigation, search Name Herrenknecht Vertical GmbH Place Schwanau, Baden-Württemberg, Germany Zip 77961 Sector Geothermal energy Product Specialized company that builds vertical drilling equipment for the development of geothermal resources. References Herrenknecht Vertical GmbH[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Herrenknecht Vertical GmbH is a company located in Schwanau, Baden-Württemberg, Germany . References ↑ "Herrenknecht Vertical GmbH" Retrieved from "http://en.openei.org/w/index.php?title=Herrenknecht_Vertical_GmbH&oldid=346498" Categories: Clean Energy Organizations Companies

69

Vertical axis wind turbine with continuous blade angle adjustment  

E-Print Network (OSTI)

The author presents a concept for a vertical axis wind turbine that utilizes each blade's entire rotational cycle for power generation. Each blade has its own vertical axis of rotation and is constrained to rotate at the ...

Weiss, Samuel Bruce

2010-01-01T23:59:59.000Z

70

Environmental Vertical Wind Shear with Hurricane Bertha (1996)  

Science Journals Connector (OSTI)

Hurricane Bertha (1996) was influenced by vertical wind shear with highly variable direction and magnitude. The paper describes a unique method for determining the vertical tilt of a tropical cyclone vortex using satellite and aircraft data. ...

Raymond M. Zehr

2003-04-01T23:59:59.000Z

71

Imaging Vertically Oriented Defects with Multi-Saft  

Science Journals Connector (OSTI)

Imaging vertically oriented defects using the Synthetic Aperture Focusing Technique (SAFT) requires special consideration. When the faces...

M. Lorenz; U. Stelwagen; A. J. Berkhout

1991-01-01T23:59:59.000Z

72

Fabrication of nano-structural arrays by channeling pulsed atomic beams through an intensity-modulated  

E-Print Network (OSTI)

Fabrication of nano-structural arrays by channeling pulsed atomic beams through an intensity-dimensional nano-structure arrays by passing a pulsed atomic beam through an intensity-modulated continuous of ``cooling'' along the longitudinal direction. This enables fabrication of vertically heterogeneous nano

Zhu, Xiangdong

73

QKD Quantum Channel Authentication  

E-Print Network (OSTI)

Several simple yet secure protocols to authenticate the quantum channel of various QKD schemes, by coupling the photon sender's knowledge of a shared secret and the QBER Bob observes, are presented. It is shown that Alice can encrypt certain portions of the information needed for the QKD protocols, using a sequence whose security is based on computational-complexity, without compromising all of the sequence's entropy. It is then shown that after a Man-in-the-Middle attack on the quantum and classical channels, there is still enough entropy left in the sequence for Bob to detect the presence of Eve by monitoring the QBER. Finally, it is shown that the principles presented can be implemented to authenticate the quantum channel associated with any type of QKD scheme, and they can also be used for Alice to authenticate Bob.

J. T. Kosloski

2006-04-02T23:59:59.000Z

74

Hybrid Zero-capacity Channels  

E-Print Network (OSTI)

There are only two known kinds of zero-capacity channels. The first kind produces entangled states that have positive partial transpose, and the second one - states that are cloneable. We consider the family of 'hybrid' quantum channels, which lies in the intersection of the above classes of channels and investigate its properties. It gives rise to the first explicit examples of the channels, which create bound entangled states that have the property of being cloneable to the arbitrary finite number of parties. Hybrid channels provide the first example of highly cloneable binding entanglement channels, for which known superactivation protocols must fail - superactivation is the effect where two channels each with zero quantum capacity having positive capacity when used together. We give two methods to construct a hybrid channel from any binding entanglement channel. We also find the low-dimensional counterparts of hybrid states - bipartite qubit states which are extendible and possess two-way key.

Sergii Strelchuk; Jonathan Oppenheim

2012-07-04T23:59:59.000Z

75

High vertical resolution crosswell seismic imaging  

DOE Patents (OSTI)

A method for producing high vertical resolution seismic images from crosswell data is disclosed. In accordance with one aspect of the disclosure, a set of vertically spaced, generally horizontally extending continuous layers and associated nodes are defined within a region between two boreholes. The specific number of nodes is selected such that the value of a particular characteristic of the subterranean region at each of the nodes is one which can be determined from the seismic data. Once values are established at the nodes, values of the particular characteristic are assigned to positions between the node points of each layer based on the values at node within that layer and without regard to the values at node points within any other layer. A seismic map is produced using the node values and the assigned values therebetween. In accordance with another aspect of the disclosure, an approximate model of the region is established using direct arrival traveltime data. Thereafter, the approximate model is adjusted using reflected arrival data. In accordance with still another aspect of the disclosure, correction is provided for well deviation. An associated technique which provides improvements in ray tracing is also disclosed.

Lazaratos, Spyridon K. (Houston, TX)

1999-12-07T23:59:59.000Z

76

Channels on Mars  

Science Journals Connector (OSTI)

...able to carry with CHANNELS ON MARS 607 power and vigor hundreds of kilometers across...by Nat ional Aeronautical and Space Administration Grant N G R 0 5 - 0 0 2 - 3 0 5 . J...The catastrophic late Pleistocene Bonneville Flood in the Snake River Plains, Idaho...

77

Channeling through Bent Crystals  

SciTech Connect

Bent crystals have demonstrated potential for use in beam collimation. A process called channeling is when accelerated particle beams are trapped by the nuclear potentials in the atomic planes within a crystal lattice. If the crystal is bent then the particles can follow the bending angle of the crystal. There are several different effects that are observed when particles travel through a bent crystal including dechanneling, volume capture, volume reflection and channeling. With a crystal placed at the edge of a particle beam, part of the fringe of the beam can be deflected away towards a detector or beam dump, thus helping collimate the beam. There is currently FORTRAN code by Igor Yazynin that has been used to model the passage of particles through a bent crystal. Using this code, the effects mentioned were explored for beam energy that would be seen at the Facility for Advanced Accelerator Experimental Tests (FACET) at a range of crystal orientations with respect to the incoming beam. After propagating 5 meters in vacuum space past the crystal the channeled particles were observed to separate from most of the beam with some noise due to dechanneled particles. Progressively smaller bending radii, with corresponding shorter crystal lengths, were compared and it was seen that multiple scattering decreases with the length of the crystal therefore allowing for cleaner detection of the channeled particles. The input beam was then modified and only a portion of the beam sent through the crystal. With the majority of the beam not affected by the crystal, most particles were not deflected and after propagation the channeled particles were seen to be deflected approximately 5mm. After a portion of the beam travels through the crystal, the entire beam was then sent through a quadrupole magnet, which increased the separation of the channeled particles from the remainder of the beam to a distance of around 20mm. A different code, which was developed at SLAC, was used to create an angular profile plot which was compared to what was produced by Yazynin's code for a beam with no multiple scattering. The results were comparable, with volume reflection and channeling effects observed and the range of crystal orientations at which volume reflection is seen was about 1 mrad in both simulations.

Mack, Stephanie; /Ottawa U. /SLAC

2012-09-07T23:59:59.000Z

78

Probing Baryogenesis with Displaced Vertices at the LHC  

E-Print Network (OSTI)

The generation of the asymmetric cosmic baryon abundance requires a departure from thermal equilibrium in the early universe. In a large class of baryogenesis models, the baryon asymmetry results from the out-of-equilibrium decay of a new, massive particle. We highlight that in the interesting scenario where this particle has a weak scale mass, this out-of-equilibrium condition requires a proper decay length larger than O(1) mm. Such new fields are within reach of the LHC, at which they can be pair produced leaving a distinctive, displaced-vertex signature. This scenario is realized in the recently proposed mechanism of baryogenesis where the baryon asymmetry is produced through the freeze-out and subsequent decay of a meta-stable weakly interacting massive particle ("WIMP baryogenesis"). In analogy to missing energy searches for WIMP dark matter, the LHC is an excellent probe of these new long-lived particles responsible for baryogenesis via the low-background displaced vertex channel. In our paper, we estimate the limits on simplified models inspired by WIMP baryogenesis from two of the most sensitive collider searches by CMS and ATLAS with 8 TeV LHC data. We also estimate the LHC reach at 13 TeV using current strategies, and demonstrate that up to a factor of 100 improvement in cross-section limits can be achieved by requiring two displaced vertices while lowering kinematic thresholds. For meta-stable WIMPs produced through electroweak interactions, the high luminosity LHC is sensitive to masses up to 2.5 TeV for lifetimes around 1 cm, while for singlets pair-produced through the off-shell-Higgs portal, the LHC is sensitive to production cross sections of O(10) ab for benchmark masses around 150 GeV. Our analysis and proposals also generally apply to displaced vertex signatures from other new physics such as hidden valley models, twin Higgs models and displaced supersymmetry.

Yanou Cui; Brian Shuve

2014-09-23T23:59:59.000Z

79

Extremality conditions for generalized channels  

E-Print Network (OSTI)

A generalized channel is a completely positive map that preserves trace on a given subspace. We find conditions under which a generalized channel with respect to a positively generated subspace J is an extreme point in the set of all such generalized channels. As a special case, this yields extremality conditions for quantum protocols. In particular, we obtain new extremality conditions for quantum 1-testers with 2 outcomes, which correspond to yes/no measurements on the set of quantum channels.

Anna Jencova

2012-04-12T23:59:59.000Z

80

Vertical profiles of halocarbons in the stratosphere  

SciTech Connect

Stratospheric air samples collected between 10 and 35 km altitude by means of a cryogenic sampler were analyzed by gaschromatography. Thus vertical profiles of source gases for halogen radicals were derived, such as CCl4, CCl3F, CCl2F2, CClF3, CF4, C2F3Cl3, C2F4Cl2, C2F5Cl, C2F6, CH3Cl, CH3CCl3, CHF2Cl, CH3Br, CBrF3, and CBrCl2F. Systematic discrepancies between measured and modelled halocarbon profiles point to deficiencies of present one- and two-dimensional models. Measurements of fully halogenated hydrocarbons provide a tool for systematically studying these deficiencies and thus improving the models. 40 references.

Fabian, P.; Borchers, R.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Vertical axis wind turbine control strategy  

SciTech Connect

Early expensive in automatic operation of the Sandia 17-m vertical axis research wind turbine (VAWT) has demonstrated the need for a systematic study of control algorithms. To this end, a computer model has been developed that uses actual wind time series and turbine performance data to calculate the power produced by the Sandia 17-m VAWT operating in automatic control. The model has been used to investigate the influence of starting algorithms on annual energy production. The results indicate that, depending on turbine and local wind characteristics, a bad choice of a control algorithm can significantly reduce overall energy production. The model can be used to select control algorithms and threshold parameters that maximize long-term energy production. An attempt has been made to generalize these results from local site and turbine characteristics to obtain general guidelines for control algorithm design.

McNerney, G.M.

1981-08-01T23:59:59.000Z

82

Light sensitivity in larval fishes: Implications for vertical zonation in ...  

Science Journals Connector (OSTI)

have focused on diel changes in vertical distribution (Neil- .... The temperature and photoperiod are ...... BOEHLERT, G. W., W. WATSON, AND L. C. SUN. 1992.

2000-02-23T23:59:59.000Z

83

Annis, Eric R. Temperature effects on the vertical distribution of ...  

Science Journals Connector (OSTI)

Temperature effects on the vertical distribution of lobster postlarvae. (Homarus americanus) .... days than in bright sun (Hudon et al. 1986), and anecdotal.

2005-10-25T23:59:59.000Z

84

Remote Sensing of Cirrus Particle Size Vertical Profile Using...  

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

inhomogeneity in terms of ice crystal sizes and shapes. The vertical variation of ice crystal size can alter the radiative heatingcooling profiles in cirrus cloudy...

85

Simulation of vertical ship responses in high seas.  

E-Print Network (OSTI)

??This research was done to study the effect of sea severity on the vertical ship responses like heave and pitch. Model testing of a 175m… (more)

Rajendran, Suresh

2009-01-01T23:59:59.000Z

86

Direct observation of biomixing by vertically migrating zooplankton  

Science Journals Connector (OSTI)

Light-emitting diode. (LED) panels (maximum 4560 lux; 450–760 nm) were placed above and below the experimental tank to stimulate vertical swimming (

2014-03-06T23:59:59.000Z

87

Numerical simulations of a vertical tail of a commercial aircraft...  

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

of a commercial aircraft with active flow control Authors: Rasquin, M., Martin, J., Jansen, K. A series of numerical simulations of a realistic vertical tail of a commercial...

88

Optimal design of aperiodic, vertical silicon nanowire structures for photovoltaics  

Science Journals Connector (OSTI)

We design a partially aperiodic, vertically-aligned silicon nanowire array that maximizes photovoltaic absorption. The optimal structure is obtained using a random walk algorithm...

Lin, Chenxi; Povinelli, Michelle L

2011-01-01T23:59:59.000Z

89

Preparation and Characterisation of Vertically Aligned Carbon Nanotubes.  

E-Print Network (OSTI)

??This thesis presents the preparation of vertically aligned carbon nanotubes using porous anodic alumina templates via thermal chemical vapour deposition. The characteristics of prepared carbon… (more)

Xu, Rui

2010-01-01T23:59:59.000Z

90

Vertical Electrical Sounding Configurations At Mt Princeton Hot...  

Open Energy Info (EERE)

navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Vertical Electrical Sounding Configurations At Mt Princeton Hot Springs Geothermal Area (Zohdy, Et Al.,...

91

Continuous Growth of Vertically Aligned Carbon Nanotubes Forests  

E-Print Network (OSTI)

Vertically aligned carbon nanotubes are one of the most promising materials due their numerous applications in flexible electronic devices, biosensors and multifunctional aircraft materials, among others. However, the ...

Guzman de Villoria, Roberto

92

Improved design of a deep vertical-lift gate  

Science Journals Connector (OSTI)

1. Redesigning of the framework of a deep vertical-lift gate by replacing the multibeam framework by a two-beam ...

P. R. Khlopenkov

1986-04-01T23:59:59.000Z

93

Electrically long vertical interconnects for microwave circuits and antennas  

E-Print Network (OSTI)

. . . . . 2 . . . . 3 . . . . 4 . 4 . 4 . 5 . . . . 5 . . . . 6 . . . . 7 A. Transmission Line Interconnects. . B. Electromagnetically Coupled lnterconnects . . . . . C. Conclusions . . . . . . 8 . . . 10 III FIDELITY SIMULATION 12 A. B. C. D... interconnects satisfying specifications set by Raytheon Systems Co. This research was sponsored by Raytheon Systems Co. RF/Microwave Division. A vertical interconnect couples transmission lines, antennas, and components between vertically spaced layers...

Coutant, Matthew Richard

2012-06-07T23:59:59.000Z

94

Rough Set Approximation Framework for Smarter Vertical Handovers  

E-Print Network (OSTI)

2010 Rough Set Approximation Framework for Smarter Vertical Handovers Nalin ChakooO, Saewoong to support seamless mobility. In this paper, we propose rough set based decision framework for vertical handoff in heterogeneous networks. We apply fuzzy decision to fuzzy-rough set which gives us the advantage

Bahk, Saewoong

95

SeedChaser: Vertical soil tillage distribution model  

Science Journals Connector (OSTI)

Knowledge of the vertical distribution of surface residues, chemicals, or seeds following tillage operations is of great importance to a wide variety of soil research areas. This paper describes a 1D empirical vertical soil tillage distribution model ... Keywords: Conservation tillage, Leslie matrix, Seed movement, Seedbank, Soil movement

K. Spokas; F. Forcella; D. Archer; D. Reicosky

2007-05-01T23:59:59.000Z

96

Hedging and Vertical Integration in Electricity Markets Gilles Chemla  

E-Print Network (OSTI)

/or demand insurance rationale for vertical integration as most important. 1 In the 1970s, for example, oil and vertical integration are two separate mechanisms for demand and spot price risk diversification that both integration restores the symmetry between producers' and retailers' exposure to demand risk while linear

Touzi, Nizar

97

ARM - Evaluation Product - Vertical Air Motion during Large-Scale  

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

ProductsVertical Air Motion during Large-Scale ProductsVertical Air Motion during Large-Scale Stratiform Rain Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Vertical Air Motion during Large-Scale Stratiform Rain Site(s) NIM SGP General Description The Vertical Air Motion during Large-Scale Stratiform Rain (VERVELSR) value-added product (VAP) uses the unique properties of a 95-GHz radar Doppler velocity spectra to produce vertical profiles of air motion during low-to-moderate (1-20 mm/hr) rainfall events It is designed to run at ARM sites that include a W-band ARM cloud radar (WACR) radar with spectra data processing. The VERVELSR VAP, based on the work of Giangrande et al. (2010), operates by exploiting a resonance effect that occurs in

98

Steerable vertical to horizontal energy transducer for mobile robots  

DOE Patents (OSTI)

The present invention provides a steerable vertical to horizontal energy transducer for mobile robots that less complex and requires less power than two degree of freedom tilt mechanisms. The present invention comprises an end effector that, when mounted with a hopping actuator, translates along axis (typically vertical) actuation into combined vertical and horizontal motion. The end effector, or foot, mounts with an end of the actuator that moves toward the support surface (typically a floor or the earth). The foot is shaped so that the first contact with the support surface is off the axis of the actuator. Off-axis contact with the support surface generates an on-axis force (typically resulting in vertical motion) and a moment orthogonal to the axis. The moment initiates a horizontal tumbling motion, and tilts the actuator so that its axis is oriented with a horizontal component and continued actuation generates both vertical and horizontal force.

Spletzer, Barry L. (Albuquerque, NM); Fischer, Gary J. (Albuquerque, NM); Feddema, John T. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

99

Majorization-preserving quantum channels  

E-Print Network (OSTI)

In this report, we give a characterization to those quantum channels that preserve majorization relationship between quantum states. Some remarks are presented as well.

Lin Zhang

2012-09-24T23:59:59.000Z

100

Mirrored serpentine flow channels for fuel cell  

DOE Patents (OSTI)

A PEM fuel cell having serpentine flow field channels wherein the input/inlet legs of each channel border the input/inlet legs of the next adjacent channels in the same flow field, and the output/exit legs of each channel border the output/exit legs of the next adjacent channels in the same flow field. The serpentine fuel flow channels may be longer, and may contain more medial legs, than the serpentine oxidant flow channels.

Rock, Jeffrey Allan (Rochester, NY)

2000-08-08T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Negative particle planar and axial channeling and channeling collimation  

SciTech Connect

While information exists on high energy negative particle channeling there has been little study of the challenges of negative particle bending and channeling collimation. Partly this is because negative dechanneling lengths are relatively much shorter. Electrons are not particularly useful for investigating negative particle channeling effects because their material interactions are dominated by channeling radiation. Another important factor is that the current central challenge in channeling collimation is the proton-proton Large Hadron Collider (LHC) where both beams are positive. On the other hand in the future the collimation question might reemerge for electon-positron or muon colliders. Dechanneling lengths increase at higher energies so that part of the negative particle experimental challenge diminishes. In the article different approaches to determining negative dechanneling lengths are reviewed. The more complicated case for axial channeling is also discussed. Muon channeling as a tool to investigate dechanneling is also discussed. While it is now possible to study muon channeling it will probably not illuminate the study of negative dechanneling.

Carrigan, Richard A., Jr.; /Fermilab

2009-12-01T23:59:59.000Z

102

VERTICAL BEAM SIZE CONTROL IN TLS AND TPS.  

SciTech Connect

Vertical beam size control is an important issue in the light source operations. The horizontal-vertical betatron coupling and vertical dispersion were measured and corrected to small values in the TLS 1.5 GeV storage ring. Estimated beam sizes are compared with the measured values. By employing an effective transverse damping system, the vertical beam blow-up due to transverse coherent instabilities, such as the fast-ion beam instability, was suppressed. As a result, the light source is very stable. In NSRRC we are designing an ultra low emittance 3-GeV storage ring and its designed vertical beam size could be as small as a few microns. The ground and mechanic vibration effects, and coherent instabilities could spoil the expected photon brightness due to blow-up of the vertical beam size if not well taken care of. The contributions of these effects to vertical beam size increase will be evaluated and the counter measures to minimize them will be proposed and reported in this paper.

KUO, C.C.; CHEN, J.R.; CHOU, P.J.; CHANG, H.P.; HSU, K.T.; LUO, G.H.; TSAI, H.J.; WANG, D.J.; WANG, M.H.

2006-06-26T23:59:59.000Z

103

STANDARD LAN -1 Fiber Channel  

E-Print Network (OSTI)

STANDARD LAN - 1 Fiber Channel Gruppo Reti TLC nome.cognome@polito.it http://www.telematica.polito.it/ #12;STANDARD LAN - 2 Fibre Channel · Born to interconnect mainframes and servers to storage systems: fibERs, but not only... · Interoperability with SCSI, Internet Protocol (IP), ... · Standard ANSI X3

Mellia, Marco

104

Cell design modifications to harden a N-channel power IGBT against single event latchup  

SciTech Connect

Device simulator is used to analyze the heavy ion induced failure mechanism in Insulated Gate Bipolar Transistors (IGBTs) and to investigate hardening solutions. Single Event Latchup was already identified as the failure mechanism. Lateral and vertical modifications of the P{sup +} plug are proposed to reduce the efficiency of the parasitic thyristor, responsible for the latchup, and validated by 2D-simulations on a N-channel IGBT cell structure.

Lorfevre, E.; Sagnes, B.; Bruguier, G.; Palau, J.M.; Gasiot, J.; Calvet, M.C.; Ecoffet, R.

1999-12-01T23:59:59.000Z

105

SAFL Channel | Open Energy Information  

Open Energy Info (EERE)

SAFL Channel SAFL Channel Jump to: navigation, search Basic Specifications Facility Name SAFL Channel Overseeing Organization University of Minnesota Hydrodynamics Hydrodynamic Testing Facility Type Channel Length(m) 84.0 Beam(m) 2.8 Depth(m) 1.8 Cost(per day) Contact POC Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 6.1 Length of Effective Tow(m) 76.0 Wavemaking Capabilities Wavemaking Capabilities Yes Maximum Wave Height(m) 0.4 Maximum Wave Length(m) 6.6 Wave Period Range(s) 0.0 Current Velocity Range(m/s) 0.0 Programmable Wavemaking No Wavemaking Description Programmable control of wave making is currently in development and will be available in fall of 2009. Wave Direction Uni-Directional Simulated Beach Yes Description of Beach Channel is sufficiently adaptable to allow simulation of beach

106

On extreme Bosonic linear channels  

E-Print Network (OSTI)

The set of all channels with fixed input and output is convex. We first give a convenient formulation of necessary and sufficient condition for a channel to be extreme point of this set in terms of complementary channel, a notion of big importance in quantum information theory. This formulation is based on the general approach to extremality of completely positive maps in an operator algebra due to Arveson. We then apply this formulation to prove the main result of this note: under certain nondegeneracy conditions, purity of the environment is necessary and sufficient for extremality of Bosonic linear (quasi-free) channel. It follows that Gaussian channel between finite-mode Bosonic systems is extreme if and only if it has minimal noise.

A. S. Holevo

2011-11-15T23:59:59.000Z

107

Vertical Pretreatment Reactor System (Poster), NREL (National Renewable Energy Laboratory)  

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

Vertical Pretreatment Reactor System Vertical Pretreatment Reactor System Two-vessel system for primary and secondary pretreatment at diff erent temperatures * Biomass is heated by steam injection to temperatures of 120°C to 210°C in the pressurized mixing tube * Preheated, premixed biomass is retained for specified residence time in vertical holding vessel; material continuously moves by gravity from top to bottom of reactor in plug-fl ow fashion * Residence time is adjusted by changing amount of material held in vertical vessel relative to continuous fl ow of material entering and exiting vessel * Optional additional reactor vessel allows for secondary pretreatment at lower temperatures-120°C to 180°C-with potential to add other chemical catalysts * First vessel can operate at residence

108

Conventional Energy Forum & Associated Vertical Business Development: Best  

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

Conventional Energy Forum & Associated Vertical Business Conventional Energy Forum & Associated Vertical Business Development: Best Practices in Indian Country Conventional Energy Forum & Associated Vertical Business Development: Best Practices in Indian Country March 1, 2012 Las Vegas, Nevada Mandalay Bay Resort & Casino The Office of Indian Energy Tribal Leader Energy Forum on "Conventional Energy (Oil, Gas, and Coal) Forum & Associated Vertical Business Development: Best Practices in Indian Country" was held March 1, 2012, in Las Vegas, Nevada. The forum focused on recent trends, existing successful partnerships, and perspectives on the future of conventional energy and how tribal business interests are evolving to meet the interests and needs of new tribal energy economies. The forucm provided an opportunity for tribal

109

Vertical morphology in solution-processed organic solar cells  

Science Journals Connector (OSTI)

Motivated by a report of an all-solution processed P3HT/PCBM ‘bilayer’ organic solar cell, we have investigated the vertical morphology by using a combination of...

Lee, Kwan H; Schwenn, Paul E; Smith, Arthur R G; Cavaye, Hamish; Shaw, Paul E; James, Michael; Krueger, Karsten B; Gentle, Ian R; Meredith, Paul; Burn, Paul L

110

Vertical Structure of Convective Systems during NAME 2004  

Science Journals Connector (OSTI)

This study describes the vertical structure of mesoscale convective systems (MCSs) that characterized the 2004 North American monsoon utilizing observations from a 2875-MHz (S band) profiler and a dual-polarimetric scanning Doppler radar. Both ...

David G. Lerach; Steven A. Rutledge; Christopher R. Williams; Robert Cifelli

2010-05-01T23:59:59.000Z

111

Turbulent Vertical Kinetic Energy in the Ocean Mixed Layer  

Science Journals Connector (OSTI)

Vertical velocities in the ocean boundary layer were measured for two weeks at an open ocean, wintertime site using neutrally buoyant floats. Simultaneous measurements of the surface meteorology and surface waves showed a large variability in ...

Eric A. D'Asaro

2001-12-01T23:59:59.000Z

112

Generating efficient execution plans for vertically partitioned XML databases  

Science Journals Connector (OSTI)

Experience with relational systems has shown that distribution is an effective way of improving the scalability of query evaluation. In this paper, we show how distributed query evaluation can be performed in a vertically partitioned XML database system. ...

Patrick Kling; M. Tamer Özsu; Khuzaima Daudjee

2010-10-01T23:59:59.000Z

113

Characterization of the Lumsden-Lynch vertical elutriator  

E-Print Network (OSTI)

CHARACTERIZATION OF THE LUMSDEN-LYNCH VERTICAL ELUTRIATOR A Thesis by CARL BRIAN GRIMM Submitted to the Graduate College of Texas ASM Unrversity in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August, 19gl... Major Subject: Industrial Hygiene CHARACTERIZATION OF THE LUMSDEN-LYNCH VERTICAL ELUTRIATOR A Thesis by CARL BRIAN GRIMM Approved as to style and content by: (Chairman of ommittee) ( mber) embe (Member) ead of Department) August, 1981 ABSTRACT...

Grimm, Carl Brian

2012-06-07T23:59:59.000Z

114

Vertical velocity in oceanic convection off tropical Australia  

E-Print Network (OSTI)

. . . . . . . v Vl Vl I I 1 3 6 10 Description of the Data Data Processing . . Event Criteria 10 15 21 III RESULTS . . . 26 Cores. Environment 26 34 IV COMPARISON WITH OTHER STUDIES . . . . . 40 Cores... Variations with altitude of median and strongest 10'/o-level statistics of (a) average vertical velocity, (b) maximum vertical velocity, (c) mass flux per unit length normal to the flight track and (d) diameter 32 Figure Page Reconstructed temperature...

Lucas, Christopher

2012-06-07T23:59:59.000Z

115

Estimating the fracture density of small-scale vertical fractures when large-scale vertical fractures are present  

E-Print Network (OSTI)

When fractures are vertical, aligned and their dimensions are small relative to the seismic wavelength, the medium can be considered to be an equivalent Horizontal Transverse Isotropic (HTI) medium. However, geophysical ...

Liu, Yuwei

2013-01-01T23:59:59.000Z

116

Spacial Distribution of Salinity and the Mechanism of Saltwater Intrusion in the Modaomen Water Channel of Pear River Estuary  

Science Journals Connector (OSTI)

Modaomen channel is an important fresh water resource in Pearl River Delta. It has been impacted by saltwater intrusion frequently in the last decade. This has drawn more and more attention from scientists and engineers. The hydrodynamic mechanism of saltwater intrusion is still impercipient. In the present paper hydrographs of velocity and salinity in the channel are analyzed based on field observations of velocity and salinity of upper middle and lower water layers at several stations along the Modaomen channel. It is found that the transport of salinity in Modaomen channel is obviously different from other estuaries. As the tidal range increases from neap to spring tide the salinity in each water layer decreases unexpectedly. This peculiar phenomenon is attributed to the extraordinary flow process in the channel. When salinity value in each layer and vertical salinity gradient are lower during spring tide no matter on rising or ebbing tide the flow velocity monotonously decreases from water surface to the bottom which is suggested by common sense. However when salinity values and vertical salinity gradient are higher during neap tide the flow velocity unexpectedly increases from water surface to the bottom during flood period and flood duration of the bottom current is surprisingly as long as 15?18 hours. In addition an inflexional velocity profile may remain amazingly for about 9 hours. This could be driven by the baroclinic pressure under the condition of tides topography and upstream runoff discharge of this channel.

J. B. Liu; Y. Bao

2011-01-01T23:59:59.000Z

117

Response of Migrating Adult Salmonids to Vertical and Horizontal Rectangular  

E-Print Network (OSTI)

-facility complexes at most hydro- electric plants on the Columbia River is the powerhouse fish- collection system, a long channel extending across the face of the powerhouse and con- taining a number of entrances for fish. This channel is one of several routes to the main fishways. To enter the powerhouse collection

118

Memory effects in quantum channel discrimination  

E-Print Network (OSTI)

We consider quantum-memory assisted protocols for discriminating quantum channels. We show that for optimal discrimination of memory channels, memory assisted protocols are needed. This leads to a new notion of distance for channels with memory. For optimal discrimination and estimation of sets of unitary channels memory-assisted protocols are not required.

Giulio Chiribella; Giacomo M. D'Ariano; Paolo Perinotti

2008-03-21T23:59:59.000Z

119

Determination of vertical profiles of aerosol extinction, single scatter  

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

Determination of vertical profiles of aerosol extinction, single scatter Determination of vertical profiles of aerosol extinction, single scatter albedo and asymmetry parameter at Barrow. Sivaraman, Chitra Pacific Northwest National Laboratory Flynn, Connor Pacific Northwest National Laboratory Turner, David University of Wisconsin-Madison Category: Aerosols Efforts are currently underway to run and evaluate the Broadband Heating Rate Profile project at the ARM North Slope of Alaska (NSA) Barrow site for the time period March 2004 - February 2005. The Aerosol Best-Estimate (ABE) Value-Added Procedure (VAP) is to provide continuous estimates of vertical profiles of aerosol extinction, single-scatter albedo, and asymmetry parameter above the Northern Slopes of Alaska (NSA) facility. In the interest of temporal continuity, we have developed an algorithm that

120

Entanglement Cost of Quantum Channels  

E-Print Network (OSTI)

The entanglement cost of a quantum channel is the minimal rate at which entanglement (between sender and receiver) is needed in order to simulate many copies of a quantum channel in the presence of free classical communication. In this paper we show how to express this quantity as a regularized optimization of the entanglement formation over states that can be generated between sender and receiver. Our formula is the channel analog of a well-known formula for the entanglement cost of quantum states in terms of the entanglement of formation; and shares a similar relation to the recently shattered hope for additivity. The entanglement cost of a quantum channel can be seen as the analog of the quantum reverse Shannon theorem in the case where free classical communication is allowed. The techniques used in the proof of our result are then also inspired by a recent proof of the quantum reverse Shannon theorem and feature the one-shot formalism for quantum information theory, the post-selection technique for quantum channels as well as von Neumann's minimax theorem. We discuss two applications of our result. First, we are able to link the security in the noisy-storage model to a problem of sending quantum rather than classical information through the adversary's storage device. This not only improves the range of parameters where security can be shown, but also allows us to prove security for storage devices for which no results were known before. Second, our result has consequences for the study of the strong converse quantum capacity. Here, we show that any coding scheme that sends quantum information through a quantum channel at a rate larger than the entanglement cost of the channel has an exponentially small fidelity.

Mario Berta; Fernando Brandao; Matthias Christandl; Stephanie Wehner

2011-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Vertical-cavity surface-emitting laser device  

DOE Patents (OSTI)

A vertical-cavity surface-emitting laser device. The vertical-cavity surface-emitting laser (VCSEL) device comprises one or more VCSELs with each VCSEL having a mode-control region thereabout, with the mode-control region forming an optical cavity with an effective cavity length different from the effective cavity length within each VCSEL. Embodiments of the present invention can be formed as single VCSELs and as one- or two-dimensional arrays of VCSELs, with either an index-guided mode of operation or an index anti-guided mode of operation being defined by a sign of the difference in the two effective cavity lengths.

Hadley, G. Ronald (Albuquerque, NM); Lear, Kevin L. (Albuquerque, NM); Awyoung, Adelbert (Albuquerque, NM); Choquette, Kent D. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

122

Randomization theorems for quantum channels  

E-Print Network (OSTI)

The classical randomization criterion is an important result of statistical decision theory. Recently, a quantum analogue has been proposed, giving equivalent conditions for two sets of quantum states, ensuring existence of a quantum channel mapping one set close to the other, in $L_1$-distance. In the present paper, we extend these concepts in several ways. First, sets of states are replaced by channels and randomization is performed by either post- or pre-composition with another channel. The $L_1$-distance is replaced by the diamond norm. Secondly, the maps are not required to be completely positive, but positivity is given by an admissible family of convex cones. It is shown that the randomization theorems, generalizing both quantum and classical randomization criteria, can be proved in the framework of base section norms, including the diamond norm and its dual. The theory of such norms is developed in the Appendix.

Anna Jencova

2014-04-15T23:59:59.000Z

123

Characterizing Vertical Mass Flux Profiles in Aeolian Saltation Systems  

E-Print Network (OSTI)

*) - 0.4133 (r^2=0.65). The values of beta ranged from 6.11 ? 17.83 for all the experiments. The Rouse profiles calculated using this approach predict very similar vertical distributions to the observed data and predicted 86% and 81% of the observed...

Farrell, Eugene

2012-07-16T23:59:59.000Z

124

k-PROTECTED VERTICES IN BINARY SEARCH TREES MIKLOS BONA  

E-Print Network (OSTI)

k-PROTECTED VERTICES IN BINARY SEARCH TREES MIKL´OS B´ONA Abstract. We show that for every k, the probability that a randomly selected vertex of a random binary search tree on n nodes is at distance k - 1. In another model, leaves may represent end-users (customers) of a company, and in that case, it may

Bona, Miklos

125

Vertical distribution of euphausiid life stages in waters adjacent to  

E-Print Network (OSTI)

Basin had a stratified profile of tem- perature and oxygen. Lower abun- dances of the larger euphausiids in the upper layers of Salsipuedes Chan- nel. whereas in Guaymas Basin and Point Eugenia. the youngest larvae. In La Jolla Bight near San Diego, differences in patterns of vertical migration of Euphausia pacifica

126

Cretaceous Vertical Motion of Australia and the Australian-  

E-Print Network (OSTI)

of the SEIR be- tween 120° and 128°E, south of the Great Australian Bight (GAB), is characterized by ruggedCretaceous Vertical Motion of Australia and the Australian- Antarctic Discordance Michael Gurnis, R and the present-day distinctive geochemistry and geophysics of the Australian-Antarctic Discordance. The dynamic

Müller, Dietmar

127

Continental seismic events observed by the MPL vertical DIFAR array  

SciTech Connect

The vertical DIFAR array, an underwater acoustic sensor system, deployed by the Marine Physical Laboratory (MPL) was in place over the continental shelf off of Southern California and recorded the HUNTERS TROPHY nuclear test and nearly a score of after-shocks of the Landers/Big Bear earthquakes. Data from this array raise the possibility that detection thresholds for continental events may be significantly lower for arrays over the continental shelf than for arrays in the deep ocean basins. Offshore stations could be used to fill gaps in land-based seismic networks for monitoring the NPT and a CTBT, especially for monitoring non-cooperating nations with large coastlines. This preliminary report provides an analysis of the HUNTERS TROPHY observation as well as one of the Landers aftershocks. The analysis suggests detection thresholds for vertical hydrophone arrays below mb 3.0 at ranges between 3 and 4 degrees, and below mb 4.4 out to 6 degrees. This report also describes two signal processing techniques that enhance the detection potential of short vertical arrays. These methods are deterministic null steering to suppress horizontally propagating ambient ocean noise, and matched field processing for vertically-incident acoustic fields. The latter technique is ideally suited for acoustic fields derived from incident seismic waves, and may be viewed as a {open_quotes}synthetic aperture{close_quotes} approach to increase the effective aperture of the array.

Harris, D.B. [Lawrence Livermore National Lab., CA (United States); D`Spain, G. [Scripps Institution of Oceanography, San Diego, CA (United States). Marine Physical Lab.

1993-11-01T23:59:59.000Z

128

Two phase pressure drop in inclined and vertical pipes  

E-Print Network (OSTI)

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

Griffith, P.

1973-01-01T23:59:59.000Z

129

NAVARRO VERTICES AND NORMAL SUBGROUPS IN GROUPS OF ODD ORDER  

E-Print Network (OSTI)

NAVARRO VERTICES AND NORMAL SUBGROUPS IN GROUPS OF ODD ORDER JAMES P. COSSEY Abstract. Let p be a prime and suppose G is a finite solvable group and is an ordinary irreducible character of G. Navarro character of Q, which is unique up to conjugacy. This pair is called the Navarro vertex

Cossey, James P.

130

Experimental investigation of turbulent natural convection in a vertical water channel with symmetric heating: flow and heat transfer  

E-Print Network (OSTI)

, France Abstract The operating temperature of building integrated photovoltaic cells is a key factor to produce elec- tricity. Regarding solar energy, building integrated photovoltaic systems (BIPV: Building Integrated PhotoVoltaics) represent one of the main options chosen for its development. However

Paris-Sud XI, Université de

131

Ion transport through cell membrane channels  

E-Print Network (OSTI)

We discuss various models of ion transport through cell membrane channels. Recent experimental data shows that sizes of ion channels are compared to those of ions and that only few ions may be simultaneously in any single channel. Theoretical description of ion transport in such channels should therefore take into account interactions between ions and between ions and channel proteins. This is not satisfied by macroscopic continuum models based on Poisson-Nernst-Planck equations. More realistic descriptions of ion transport are offered by microscopic Brownian and molecular dynamics. One should also take into account a dynamical character of the channel structure. This is not yet addressed in the literature

Jan Gomulkiewicz; Jacek Miekisz; Stanislaw Miekisz

2007-06-05T23:59:59.000Z

132

Measurement of Vertical Kinetic Energy and Vertical Velocity Skewness in Oceanic Boundary Layers by Imperfectly Lagrangian Floats  

Science Journals Connector (OSTI)

The effects of upward buoyancy on the accuracy with which Lagrangian floats can measure the Eulerian mean variance ?ww?E and skewness SwE of vertical fluid velocity w in the wind-driven upper-ocean boundary layer is investigated using both ...

Ramsey R. Harcourt; Eric A. D’Asaro

2010-11-01T23:59:59.000Z

133

Generic theory for channel sinuosity  

Science Journals Connector (OSTI)

...development of incised meanders in the Central Colorado Plateau . Geol Soc Am Bull 102 ( 2 ): 233 – 242 . 11 Finnegan...05 58.4°N, 114.75°W Yampa Colorado 0.2 (8) 1.40* 0.10 40.5°N, 107.5°W...ZZQQhy407. 7. Hicks FE (1996) Hydraulic flood routing with minimal channel data: Peace...

Eli D. Lazarus; José Antonio Constantine

2013-01-01T23:59:59.000Z

134

Water Velocity Measurements on a Vertical Barrier Screen at the Bonneville Dam Second Powerhouse  

SciTech Connect

Fish screens at hydroelectric dams help to protect rearing and migrating fish by preventing them from passing through the turbines and directing them towards the bypass channels by providing a sweeping flow parallel to the screen. However, fish screens may actually be harmful to fish if they become impinged on the surface of the screen or become disoriented due to poor flow conditions near the screen. Recent modifications to the vertical barrier screens (VBS) at the Bonneville Dam second powerhouse (B2) intended to increase the guidance of juvenile salmonids into the juvenile bypass system (JBS) have resulted in high mortality and descaling rates of hatchery subyearling Chinook salmon during the 2008 juvenile salmonid passage season. To investigate the potential cause of the high mortality and descaling rates, an in situ water velocity measurement study was conducted using acoustic Doppler velocimeters (ADV) in the gatewell slot at Units 12A and 14A of B2. From the measurements collected the average approach velocity, sweep velocity, and the root mean square (RMS) value of the velocity fluctuations were calculated. The approach velocities measured across the face of the VBS varied but were mostly less than 0.3 m/s. The sweep velocities also showed large variances across the face of the VBS with most measurements being less than 1.5 m/s. This study revealed that the approach velocities exceeded criteria recommended by NOAA Fisheries and Washington State Department of Fish and Wildlife intended to improve fish passage conditions.

Hughes, James S.; Deng, Zhiqun; Weiland, Mark A.; Martinez, Jayson J.; Yuan, Yong

2011-11-22T23:59:59.000Z

135

Extremal Channels for a genaral Quantum system  

E-Print Network (OSTI)

Quantum channels can be mathematically represented as completely positive trace-preserving maps that act on a density matrix. A general quantum channel can be written as a convex sum of `extremal' channels. We show that for an $N$-level system, the extremal channel can be characterized in terms of $N^2$-$N$ real parameters coupled with rotations. We give a representation for $N$= 2, 3, 4.

Kuldeep Dixit; E. C. G. Sudarshan

2009-09-21T23:59:59.000Z

136

The Effect of Vertical Upward Flow on Thermal Plumes  

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

The Effect of Vertical Upward Flow on Thermal Plumes The Effect of Vertical Upward Flow on Thermal Plumes Speaker(s): Pierre S. Farrugia Date: November 18, 2010 - 12:05pm Location: 90-3122 Seminar Host/Point of Contact: David Lorenzetti Thermal plumes have been widely investigated in a variety of scenarios, including natural convection and stratified environments. The resulting theory may be used to predict ventilation flow rates in, for example, natural and displacement ventilation, and under-floor air distribution (UFAD) systems. However, there has been little effort in investigating how uniform upward flows affect the plume velocity, rate of growth, and thermal profile. Such situations can arise if, for example, the diffusers of a UFAD system are evenly distributed. In order to study such situations, analytical expressions for the velocity and temperature profiles of a plume

137

Vertical Seismic Profiling (Majer, 2003) | Open Energy Information  

Open Energy Info (EERE)

(Majer, 2003) (Majer, 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Vertical Seismic Profiling (Majer, 2003) Exploration Activity Details Location Unspecified Exploration Technique Vertical Seismic Profiling Activity Date Usefulness not indicated DOE-funding Unknown Notes The goal of this work is to evaluate the most promising methods and approaches that may be used for improved geothermal exploration and reservoir assessment. It is not a comprehensive review of all seismic methods used to date in geothermal environments. This work was motivated by a need to assess current and developing seismic technology that if applied in geothermal cases may greatly improve the chances for locating new geothermal resources and/or improve assessment of current ones.

138

MHK Technologies/Vertical Axis Venturi System | Open Energy Information  

Open Energy Info (EERE)

Axis Venturi System Axis Venturi System < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage 275px Technology Profile Primary Organization Warrior Girl Corporation Technology Resource Click here Current Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The proprietary venturi system uses two venturies one on the upstream side of the vertical axis turbine to force the water flow into the turbine and one at the downstream side of the turbine which creates a lower pressure region that pulls the water through the turbine The vertical axis orientation of the turbine is believed by the company to allow for efficiency gains

139

Gas flow in vertical slots with large horizontal temperature differences  

SciTech Connect

Perfect gas exact solutions to the steady Navier--Stokes equations are given for laminar convective motion in open and closed vertical slots with large temperature differences using Sutherland law transport properties. The solutions are valid a few slot widths away from the ends in the asymptotic region where the opposite hot and cold wall boundary layers are fully merged. It is found that the static pressure (in the closed slot) and temperature and velocity distributions (in all cases) are very sensitive to property variations, even though the heat flux may not be. We observe the net horizontal and vertical heat fluxes to be the same as those obtained from the Boussinesq equations. Comparisons with constant property solutions and the well-known Boussinesq limiting solution for small temperature differences are given for examples using air.

Chenoweth, D.R.; Paolucci, S.

1985-08-01T23:59:59.000Z

140

Physics of vertically integrated waveguide photodetectors and amplifiers. Final report  

SciTech Connect

This report describes the efforts supported by LLNL under the Subcontract No. B239593 at the University of Arizona during the Fiscal Year 1992. A solid physical foundation has been developed for understanding the operation of vertically integrated photodetectors and amplifiers. This has been achieved through a combination of numerical simulation and development of simple coupled-mode theories. Coupled-mode theory has been used to elucidate the physics underlying the operation of vertically integrated photodetectors. In particular, the relation between the spatial transients observed in experiments and numerical simulations, and the non-power orthogonality of the underlying modes has been clarified. The coupled-mode theory has been extended to the case of coupled waveguide-amplifiers.

Wright, E.M. [Univ. of Arizona, Tucson, AZ (United States). Optical Sciences Center

1993-11-01T23:59:59.000Z

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


141

Vertical-cavity surface-emitting laser device  

DOE Patents (OSTI)

A vertical-cavity surface-emitting laser device is disclosed. The vertical-cavity surface-emitting laser (VCSEL) device comprises one or more VCSELs with each VCSEL having a mode-control region thereabout, with the mode-control region forming an optical cavity with an effective cavity length different from the effective cavity length within each VCSEL. Embodiments of the present invention can be formed as single VCSELs and as one- or two-dimensional arrays of VCSELs, with either an index-guided mode of operation or an index anti-guided mode of operation being defined by a sign of the difference in the two effective cavity lengths. 10 figs.

Hadley, G.R.; Lear, K.L.; Awyoung, A.; Choquette, K.D.

1999-05-11T23:59:59.000Z

142

Method of fabricating vertically aligned group III-V nanowires  

DOE Patents (OSTI)

A top-down method of fabricating vertically aligned Group III-V micro- and nanowires uses a two-step etch process that adds a selective anisotropic wet etch after an initial plasma etch to remove the dry etch damage while enabling micro/nanowires with straight and smooth faceted sidewalls and controllable diameters independent of pitch. The method enables the fabrication of nanowire lasers, LEDs, and solar cells.

Wang, George T; Li, Qiming

2014-11-25T23:59:59.000Z

143

Performance of petroleum reservoirs containing random vertical fractures  

E-Print Network (OSTI)

PERFORMANCE OF PETROLEUM RESERVOIRS CONTAINING RANDOM VERTICAL FRACTURES A Thesis By WILLIAM LYMAN HUSKEY Approved as to style and content by: Chairxnan o Coxnxnittee ead of Departxnent PERFORMANCE OF PETROLEUM RESERVOIRS CONTAINING RANDOM...: Petroleum Engineering TABLE OF CONTENTS Page SUMMARY Z. INTRODUCTION . 3. EQUIPMENT AND PROCEDURE 4. PRESENTATION AND DISCUSSION OF RESULTS 5. CONCLUSIONS 6. ACKNOWLEDGMENTS . . 44 7. REFERENCES 8. BIBLIOGRAPHY . 47 TABLE QF GRAPHS AND FIGURES...

Huskey, William Lyman

2012-06-07T23:59:59.000Z

144

Minimax discrimination of two Pauli channels  

SciTech Connect

We consider the problem of optimally discriminating two Pauli channels in the minimax strategy, maximizing the smallest of the probabilities of correct identification of the channel. We find the optimal input state at the channel and show the conditions under which using entanglement strictly enhances distinguishability. We finally compare the minimax strategy with the Bayesian one.

D'Ariano, G. Mauro; Sacchi, Massimiliano F.; Kahn, Jonas [QUIT Group of the INFM, Unita di Pavia and Dipartimento di Fisica 'A. Volta', Universita di Pavia, via Bassi 6, I-27100 Pavia (Italy); Departement de Mathematiques, Universite Paris-Sud 11, Batiment 425 91405 Orsay Cedex (France)

2005-11-15T23:59:59.000Z

145

Ion channels and apoptosis in cancer  

Science Journals Connector (OSTI)

...Issue Ion channels, transporters and cancer compiled and edited by Mustafa B. A...Albrecht Schwab Ion channels and apoptosis in cancer Carl D. Bortner John A. Cidlowski e-mail...Issue Ion channels, transporters and cancer . Humans maintain a constant cell number...

2014-01-01T23:59:59.000Z

146

Coding theorems for hybrid channels. II  

E-Print Network (OSTI)

The present work continues investigation of the capacities of measurement (quantum-classical) channels in the most general setting, initiated in~\\cite{HCT}. The proof of coding theorems is given for the classical capacity and entanglement-assisted classical capacity of the measurement channel with arbitrary output alphabet, without assuming that the channel is given by a bounded operator-valued density.

A. A. Kuznetsova; A. S. Holevo

2014-08-14T23:59:59.000Z

147

FREEPORT HARBOR, TEXAS CHANNEL IMPROVEMENT PROJECT  

E-Print Network (OSTI)

the Gulf of Mexico; a main channel 45 feet deep and 400 feet wide; a Brazos Harbor channel 36 feet deep-loaded to traverse the waterway. The current channel depth requires that large crude carriers remain offshore and transfer their cargo into smaller crude tankers for the remainder of the voyage. This lightering operation

US Army Corps of Engineers

148

Low-cost label-free biosensors using photonic crystals embedded between crossed polarizers  

Science Journals Connector (OSTI)

There is a strong need for low-cost biosensors to enable rapid, on-site analysis of biological, biomedical, or chemical substances. We propose a platform for label-free optical...

Nazirizadeh, Yousef; Bog, Uwe; Sekula, Sylwia; Mappes, Timo; Lemmer, Uli; Gerken, Martina

2010-01-01T23:59:59.000Z

149

Low CrossPolarization WBand Lens for CAPMAP Annika Peter, Advisor: Suzanne Staggs  

E-Print Network (OSTI)

­front bending occurs at one surface, are highly curved, meaning that the angle of incidence to the surface can nearly a black­body at 2.73 K, and that there exist deviations from this black­body of order 10 -5 K as #(â??n) = #T (â??n)/T . One does something similar for Q and U , but not V because it is not expected

150

E-Print Network 3.0 - addressable vertical-cavity laser Sample...  

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

vertical-cavity laser Search Powered by Explorit Topic List Advanced Search Sample search results for: addressable vertical-cavity laser Page: << < 1 2 3 4 5 > >> 1 J. Phys. III...

151

Estimating Vertical Motion Profile Shape within Tropical Weather States over the Oceans  

Science Journals Connector (OSTI)

The vertical structure of tropical deep convection strongly influences interactions with larger-scale circulations and climate. This paper focuses on investigating this vertical structure and its relationship with mesoscale tropical weather ...

Zachary J. Handlos; Larissa E. Back

2014-10-01T23:59:59.000Z

152

Vertical-axis wind turbines -- The current status of an old technology  

SciTech Connect

Vertical-axis wind turbine technology is not well understood, even though the earliest wind machines rotated about a vertical axis. The operating environment of a vertical-axis wind turbine is quite complex, but detailed analysis capabilities have been developed and verified over the last 30 years. Although vertical-axis technology has not been widely commercialized, it exhibits both advantages and disadvantages compared to horizontal-axis technology, and in some applications, it appears to offer significant advantages.

Berg, D.E.

1996-12-31T23:59:59.000Z

153

Single channel recordings of K+ currents in squid axons  

Science Journals Connector (OSTI)

... channels are illustrated on the single channel level, and some more detailed features of the elementary current contribution are indicated.

Franco Conti; Erwin Neher

1980-05-15T23:59:59.000Z

154

Effect of Dynamic Stall on the Aerodynamics of Vertical-Axis Wind Turbines  

E-Print Network (OSTI)

Effect of Dynamic Stall on the Aerodynamics of Vertical-Axis Wind Turbines Frank Scheurich of the aerodynamic performance of vertical-axis wind turbines pose a significant challenge for computational fluid of the aerodynamics of a vertical- axis wind turbine that consists of three curved rotor blades that are twisted

McCalley, James D.

155

Experimental investigation of the performance of a diffuser-augmented vertical axis wind turbine  

E-Print Network (OSTI)

Experimental investigation of the performance of a diffuser- augmented vertical axis wind turbine Experimental investigation of the performance of a diffuser-augmented vertical axis wind turbine by Arash The performance of a vertical axis wind turbine with and without a diffuser was studied using direct force

Victoria, University of

156

Data-dependent Write Channel Model for Magnetic Recording  

E-Print Network (OSTI)

for the Bit-Patterned Media (BPM) channel in [1]. Here, we focus on the write channel and characterize model considered and its relevance with the BPM write channel. We then characterize the information with probability 1. Relevance with the BPM write channel The channel model in (1) depicts a BPM write channel

Wang, Deli

157

Vertical integration in the beef cattle industry: Harris Ranch Company  

E-Print Network (OSTI)

as to style and content by: J~ + Cl~~~ Dr. James William Turner, Chairman, Advisory Committee Dr. Vernon E, Schneider, Committee Member Dr. William Mica, Committee member August 1990 Harris Ranch Company (HRC) has today achieved a high degree of vertical... to the people who made my very valuable experience at Harris Ranch Company (HRC) possible. I would like to thank Dr. James W. Turner, chairman of my graduate committee, for the encouragement and guidance he has given me during my coursework, and Dr. Vernon E...

Pedretti Fernandez, Carlos Luis

2012-06-07T23:59:59.000Z

158

Diffraction from oxide confinement apertures in vertical-cavity lasers  

SciTech Connect

Direct measurement of scattered fields from oxide confinement apertures in vertical-cavity lasers is presented. Diffraction fringes associated with each transverse lasing mode are detected in the far field from devices with varying oxide aperture dimensions and with quantum efficiencies as high as 48{percent}. The diffracted pattern symmetries match the rectangular symmetry of the oxide apertures present in the devices and fringe locations are compared to Fraunhofer theory. The fraction of power diffracted from the lasing mode remains roughly constant as a function of relative pump rate, but is shown to depend on both transverse mode order and oxide aperture size. {copyright} {ital 1999 American Institute of Physics.}

Roos, P.A.; Carlsten, J.L. [Montana State University, Department of Physics, Bozeman, Montana 59717 (United States)] [Montana State University, Department of Physics, Bozeman, Montana 59717 (United States); Kilper, D.C. [University of North Carolina at Charlotte, Department of Physics, Charlotte, North Carolina 28223 (United States)] [University of North Carolina at Charlotte, Department of Physics, Charlotte, North Carolina 28223 (United States); Lear, K.L. [MicroOptical Devices Inc., 5601C Midway Park Pl. NE, Albuquerque, New Mexico 87109 (United States)] [MicroOptical Devices Inc., 5601C Midway Park Pl. NE, Albuquerque, New Mexico 87109 (United States)

1999-08-01T23:59:59.000Z

159

Functionality Tuning in Vertically Aligned Nanocomposite Thin Films  

E-Print Network (OSTI)

Aligned Nanocolumnar TC Curie Temperature TEM Transmission Electron Microscopy TMI Metal-Insulator Transition Temperature TMR Tunnel Magnetoresistance PLD Pulsed Laser Deposition PLOAD Pulsed Laser Oblique-Angle Deposition VAN Vertically Aligned... structure. ................ 5 FIG. 1.2. (a) Electronic phase diagram of La1-xSrxMnO3 (Reproduced from Ref. 14). (b) TC versus tolerance factor t from equation (1-1) for the system A0.7A?0.3MnO3 (Reproduced from Ref. 15). 14, 15...

Chen, Aiping

2013-04-04T23:59:59.000Z

160

Torque ripple in a Darrieus, vertical axis wind turbine  

SciTech Connect

Interaction between a steady wind and a rotating, Darrieus, vertical axis wind turbine produces time periodic aerodynamic loads which cause time dependent torque variations, referred to as torque ripple, to occur in the mechanical link between the turbine and the electrical generator. There is concern for the effect of torque ripple upon fatigue life of drive train components and upon power quality. An analytical solution characterizing the phenomenon of torque ripple has been obtained which is based upon a Fourier expansion of the time dependent features of the problem. Numerical results for torque ripple, some experimental data, determination of acceptable levels and methods of controlling it, are presented and discussed.

Reuter, R.C. Jr.

1980-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Measurements of the Vertical Coherence Length in Neutron Interferometry  

SciTech Connect

The study and use of macroscopic quantum coherence requires long coherence lengths. Here we describe an approach to measuring the vertical coherence length in neutron interferometry, along with improvements to the NIST interferometer that led to a measured coherence length of 790 A. The measurement is based on introducing a path separation and measuring the loss in contrast as this separation is increased. The measured coherence length is consistent with the momentum distribution of the neutron beam. Finally, we demonstrate that the loss in contrast with beam displacement in one leg of the interferometer can be recovered by introducing a corresponding displacement in the second leg.

Pushin, D. A.; Cory, D. G. [Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts (United States); Arif, M. [National Institute of Standards and Technology, Gaithersburg, Maryland (United States); Huber, M. G. [Department of Physics, Tulane University, New Orleans, Louisiana (United States)

2008-06-27T23:59:59.000Z

162

Control system for a vertical-axis windmill  

DOE Patents (OSTI)

A vertical-axis windmill having a rotating structure is provided with a series of articulated vertical blades whose positions are controlled to maintain a constant RPM for the rotating structure, when wind speed is sufficient. A microprocessor controller is used to process information on wind speed, wind direction and RPM of the rotating structure to develop an electrical signal for establishing blade position. The preferred embodiment of the invention, when connected to a utility grid, is designed to generate 40 kilowatts of power when exposed to a 20 mile per hour wind. The control system for the windmill includes electrical blade actuators that modulate the blades of the rotating structure. Blade modulation controls the blade angle of attack, which in turn controls the RPM of the rotor. In the preferred embodiment, the microprocessor controller provides the operation logic and control functions. A wind speed sensor provides inputs to start or stop the windmill, and a wind direction sensor is used to keep the blade flip region at 90 and 270/sup 0/ to the wind. The control system is designed to maintain constant rotor RPM when wind speed is between 10 and 40 miles per hour.

Brulle, R.V.

1981-09-03T23:59:59.000Z

163

Case history: Vertical barrier wall system for Superfund Site  

SciTech Connect

Design considerations and construction aspects are presented for the installation of a vertical barrier wall system for the Boeing Company at a Superfund Site near Seattle, WA. The construction was performed during 1996. The vertical barrier wall system included: (1) a soil-bentonite (SB) slurry wall, approximately 670 meters (2200 feet) in length, ranging from 12 to 21 meters (40 to 70 feet) in depth; (2) expansion of a cover system over the area enclosed by the SB wall; and (3) surface drainage improvements. Design and construction of the system addressed requirements of a Consent Decree for the site issued in 1993. The paper discusses the development of the design to meet remedial performance goals of preventing migration of contaminants in the soil/groundwater system and aiding aquifer restoration. Secondly, the paper details installation of the SB wall, highlighting the more significant construction issues, which included excavation of the wall through glacially deposited cobbles/boulders/till as well as addressing the severe elevation changes along the wall alignment. Thirdly, the paper presents Quality Assurance (QA) monitoring and testing performed during the construction phase.

Koelling, M.A.; Kovac, C.P.; Norris, J.E.

1997-12-31T23:59:59.000Z

164

Applying Alpha-Channeling to Mirror Machines  

SciTech Connect

The ?-channeling effect entails the use of radio-frequency waves to expel and cool high-energetic ?- particles born in a fusion reactor; the device reactivity can then be increased even further by redirecting the extracted energy to fuel ions. Originally proposed for tokamaks, this technique has also been shown to benefi t open-ended fusion devices. Here, the fundamental theory and practical aspects of ?- channeling in mirror machines are reviewed, including the influence of magnetic field inhomogeneity and the effect of a finite wave region on the ?-channeling mechanism. For practical implementation of the ? -channeling effect in mirror geometry, suitable contained weakly-damped modes are identifi ed. In addition, the parameter space of candidate waves for implementing the ? -channeling effect can be signi cantly extended through the introduction of a suitable minority ion species that has the catalytic effect of moderating the transfer of power from the ?-channeling wave to the fuel ions.

A.I. Zhmoginov and N.J. Fisch

2012-03-16T23:59:59.000Z

165

Ion Channel Engineering: Perspectives and Strategies  

Science Journals Connector (OSTI)

Abstract Ion channels facilitate the passive movement of ions down an electrochemical gradient and across lipid bilayers in cells. This phenomenon is essential for life and underlies many critical homeostatic processes in cells. Ion channels are diverse and differ with respect to how they open and close (gating) and to their ionic conductance/selectivity (permeation). Fundamental understanding of ion channel structure–function mechanisms, their physiological roles, how their dysfunction leads to disease, their utility as biosensors, and development of novel molecules to modulate their activity are important and active research frontiers. In this review, we focus on ion channel engineering approaches that have been applied to investigate these aspects of ion channel function, with a major emphasis on voltage-gated ion channels.

Prakash Subramanyam; Henry M. Colecraft

2014-01-01T23:59:59.000Z

166

MHL Free Surface Channel | Open Energy Information  

Open Energy Info (EERE)

MHL Free Surface Channel MHL Free Surface Channel Jump to: navigation, search Basic Specifications Facility Name MHL Free Surface Channel Overseeing Organization University of Michigan Hydrodynamics Hydrodynamic Testing Facility Type Channel Beam(m) 1.0 Depth(m) 0.6 Cost(per day) $2000 (+ Labor/Materials) Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 2 Wavemaking Capabilities Wavemaking Capabilities None Channel/Tunnel/Flume Channel/Tunnel/Flume Yes Velocity(m/s) 2 Recirculating No Wind Capabilities Wind Capabilities None Control and Data Acquisition Description Custom Data Acquisition System using National Instruments hardware; system compatible with Planing Hull and Floating Beam Dynamometers Custom Data Acquisition System using National Instruments hardware; system compatible with Planing Hull and Floating Beam Dynamometers

167

Tradeoffs of Source Coding, Channel Coding and Spreading in Frequency Selective Rayleigh Fading Channels  

Science Journals Connector (OSTI)

This paper investigates the tradeoffs of source coding, channel coding and spreading in CDMA systems. We consider a system consisting of an image source coder, a convolutional channel coder, an interleaver, an...

1]Qinghua Zhao; Pamela Cosman…

2002-01-01T23:59:59.000Z

168

Programmable quantum channels and measurements  

E-Print Network (OSTI)

We review some partial results for two strictly related problems. The first problem consists in finding the optimal joint unitary transformation on system and ancilla which is the most efficient in programming any desired channel on the system by changing the state of the ancilla. In this respect we present a solution for dimension two for both system and ancilla. The second problem consists in finding the optimal universal programmable detector, namely a device that can be tuned to perform any desired measurement on a given quantum system, by changing the state of an ancilla. With a finite dimension for the ancilla only approximate universal programmability is possible, with minimal dimension increasing function versus the precision of the approximation. We show that one can achieve a dimension growing polynomially versus the precision, and even linearly in specific cases.

Giacomo Mauro D'Ariano; Paolo Perinotti

2005-10-05T23:59:59.000Z

169

Instrument Development Tethered Balloon Sounding System for Vertical Radiation Profiles  

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

Tethered Balloon Sounding System Tethered Balloon Sounding System for Vertical Radiation Profiles C. D. Whiteman J. M. Alzheimer G. A. Anderson M. R. Garnich W. J. Shaw Pacific Northwest Laboratory Richland, WA 99352 platform is built on a triangular frame identical to the one on the Sky Platform, but the MSP carries no radiometric sensors, control loop, or leveling motors. Rather. the MSP is instrumented to measure the motions to which the Sky Platform will be subjected; the data provide engineering information to be used in the final design of the control loop and structural elements of the Sky Platform. An array of six miniature solid state accelerometers provides the raw data from which balloon motions are determined. Future plans call for the installation of a small attitude gyroscope on the

170

Solitary wave scattering by a vertical cylinder: Experimental study  

SciTech Connect

The nonlinear interaction of a solitary wave and a vertical circular cylinder is examined. The wave field was measured at various locations near the cylinder and the detailed process of wave reflection, diffraction and scattering is discussed. The formation of the first and second scattered wave is observed as the incident wave first encounters the cylinder and as it leaves the cylinder respectively. Comparisons are made to the generalized Boussinesq (gB) model which is found to give quite good results for the wave heights except very close to the cylinder surface and in the immediate wake region behind the cylinder. The net force on the cylinder in the direction of incident wave propagation was measured as a function of time, and good agreement with the gB model is obtained.

Yates, G.T. [Univ. of Hong Kong (Hong Kong); Wang, K.H. [Univ. of Houston, TX (United States)

1994-12-31T23:59:59.000Z

171

Vertically Aligned Carbon Nanofiber Based Biosensor Platform for Glucose Sensor  

SciTech Connect

Vertically aligned carbon nanofibers (VACNFs) have recently become an important tool for biosensor design. Carbon nanofibers (CNF) have excellent conductive and structural properties with many irregularities and defect sites in addition to exposed carboxyl groups throughout their surfaces. These properties allow a better immobilization matrix compared to carbon nanotubes and offer better resolution when compared with the FET-based biosensors. VACNFs can be deterministically grown on silicon substrates allowing optimization of the structures for various biosensor applications. Two VACNF electrode architectures have been employed in this study and a comparison of their performances has been made in terms of sensitivity, sensing limitations, dynamic range, and response time. The usage of VACNF platform as a glucose sensor has been verified in this study by selecting an optimum architecture based on the VACNF forest density. Read More: http://www.worldscientific.com/doi/abs/10.1142/S0129156414500062

Mamun, Khandaker Abdullah Al [ORNL] [ORNL; Tulip, Fahmida S [ORNL] [ORNL; Macarthur, Kimberly C [ORNL] [ORNL; McFarlane, Nicole M [ORNL] [ORNL; Islam, Syed K [ORNL] [ORNL

2014-01-01T23:59:59.000Z

172

Semicoke production and quality at Chinese vertical SJ furnaces  

SciTech Connect

In Russia there has been little interest on the thermal processing of non-sintering coal. However it may be used to obtain many special types of coke and semicoke that are necessary for processes other than blast furnace smelting and employing small metallurgical coke fractions that do not meet the relevant quality requirements. China has recently made great progress in developing the thermal processing of coal (mainly energy coal) to obtain a highly effective product, semicoke, primarily used in metallurgy and adsorption process. The article considers the operation of a Chinese semicoking plant equipped with vertical SJ furnaces. The plant is in the Shenmu district of Shanxi province (Inner Mongolia). The enterprise includes two furnaces of total output of about 100,000 t/yr of semicoke.

V.M. Strakhov; I.V. Surovtseva; A.V. D'yachenko; V.M. Men'shenin [Kuznetsk Center, Eastern Coal-Chemistry Institute (Russian Federation)

2007-05-15T23:59:59.000Z

173

Single transverse mode selectively oxidized vertical cavity lasers  

SciTech Connect

Vertical cavity surface emitting lasers (VCSELs) which operate in multiple transverse optical modes have been rapidly adopted into present data communication applications which rely on multi-mode optical fiber. However, operation only in the fundamental mode is required for free space interconnects and numerous other emerging VCSEL applications. Two device design strategies for obtaining single mode lasing in VCSELs based on mode selective loss or mode selective gain are reviewed and compared. Mode discrimination is attained with the use of a thick tapered oxide aperture positioned at a longitudinal field null. Mode selective gain is achieved by defining a gain aperture within the VCSEL active region to preferentially support the fundamental mode. VCSELs which exhibit greater than 3 mW of single mode output power at 850 nm with mode suppression ratio greater than 30 dB are reported.

CHOQUETTE,KENT D.; GEIB,KENT M.; BRIGGS,RONALD D.; ALLERMAN,ANDREW A.; HINDI,JANA JO

2000-04-26T23:59:59.000Z

174

Bunch Coalescing in a Helical Channel  

SciTech Connect

A high-luminosity Muon Collider requires bunch recombination for optimal luminosity. In this paper, we take advantage of the large slip factor attainable in a helical transport channel (HTC) to coalesce bunches of muons into a single one over a shorter distance than can be achieved over a straight channel.

Neuffer, D.V.; Yonehara, K.; /Fermilab; Ankenbrandt, C.M.; Yoshikawa, C.Y.; /MUONS Inc., Batavia

2012-05-01T23:59:59.000Z

175

Ca2+ Channels and Ryanodine Receptors in  

E-Print Network (OSTI)

Ca2+ Channels and Ryanodine Receptors in Heart Cells Vasudev Bailey Calcium Signals Ca2+ signalling between single L-type Ca2+ channels and ryanodine receptors in heart cells Shi-Qiang Wang, Long-Sheng Song and ryanodine receptors #12;Local calcium release Ca (a.u.) 20 µm Background Ca2+-induced Ca2+ release

Yue, David

176

Energy Harvesting Diamond Channel with Energy Cooperation  

E-Print Network (OSTI)

Energy Harvesting Diamond Channel with Energy Cooperation Berk Gurakan Sennur Ulukus Department@umd.edu Abstract--We consider the energy harvesting diamond channel, where the source and two relays harvest energy the option of wirelessly transferring some of its energy to the relays via energy cooperation. We find

Ulukus, Sennur

177

Channel Coding Diversity with Mismatched Decoding Metrics  

E-Print Network (OSTI)

1 Channel Coding Diversity with Mismatched Decoding Metrics Trung Thanh Nguyen, Student Member diversity with general decoding metrics in terms of the gener- alized mutual information (GMI). We show of weather-induced fading scenarios where the quality of a single (either FSO or RF) channel could

Lampe, Lutz

178

Sabine-Neches Waterway Channel Improvement Project  

E-Print Network (OSTI)

and 500 to 800 feet wide, from the Gulf of Mexico; a channel 40 feet deep and 400 feet wide to Beaumont of navigation on the waterway. The current channel was completed in 1960. At that time, crude oil tankers are now used routinely for crude oil imports to both Beaumont and Port Arthur. In addition to larger

US Army Corps of Engineers

179

FREEPORT HARBOR, TEXAS CHANNEL IMPROVEMENT PROJECT  

E-Print Network (OSTI)

the Gulf of Mexico; a main channel 45 feet deep and 400 feet wide; a Brazos Harbor channel 36 feet deep requires that large crude carriers remain offshore and transfer their cargo into smaller crude tankers for the remainder of the voyage. This lightering operation takes place in the Gulf of Mexico where the two ships

US Army Corps of Engineers

180

Elementary Processes Underlying Alpha Channeling in Tokamaks  

SciTech Connect

Alpha channeling in tokamaks is speculative, but also extraordinarily attractive. Waves that can accomplish this effect have been identified. Key aspects of the theory now enjoy experimental confirmation. This paper will review the elementary processes of wave-particle interactions in plasma that underlie the alpha channeling effect

NM.J. Fisch

2012-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Integration of photoactive and electroactive components with vertical cavity surface emitting lasers  

DOE Patents (OSTI)

A monolithically integrated optoelectronic device is provided which integrates a vertical cavity surface emitting laser and either a photosensitive or an electrosensitive device either as input or output to the vertical cavity surface emitting laser either in parallel or series connection. Both vertical and side-by-side arrangements are disclosed, and optical and electronic feedback means are provided. Arrays of these devices can be configured to enable optical computing and neural network applications. 9 figs.

Bryan, R.P.; Esherick, P.; Jewell, J.L.; Lear, K.L.; Olbright, G.R.

1997-04-29T23:59:59.000Z

182

Integration of photoactive and electroactive components with vertical cavity surface emitting lasers  

DOE Patents (OSTI)

A monolithically integrated optoelectronic device is provided which integrates a vertical cavity surface emitting laser and either a photosensitive or an electrosensitive device either as input or output to the vertical cavity surface emitting laser either in parallel or series connection. Both vertical and side-by-side arrangements are disclosed, and optical and electronic feedback means are provided. Arrays of these devices can be configured to enable optical computing and neural network applications.

Bryan, Robert P. (12700 Indian School Rd. NE., Apt. 604, Albuquerque, NM 87112); Esherick, Peter (1105 Sagebrush Trail SE., Albuquerque, NM 87123); Jewell, Jack L. (12 Timberline Dr., Bridgewater, NJ 08807); Lear, Kevin L. (13713 Vic Rd. NE., Albuquerque, NM 87112); Olbright, Gregory R. (3875 Orange Ct., Boulder, CO 80304)

1997-01-01T23:59:59.000Z

183

Vertically and Horizontally Mounted Wind Mills : Wind Energy Production in Tampere University of Applied Sciences.  

E-Print Network (OSTI)

??The purpose of this thesis was to gather information about vertical and horizontal wind mills and to complete a research on wind power production by… (more)

Evdokimova, Ekaterina

2013-01-01T23:59:59.000Z

184

Cryogenic Performance of Double-Fused 1.5-m Vertical Cavity Lasers  

Science Journals Connector (OSTI)

The low-temperature performance of vertical cavity lasers (VCL's) is of interest for high-speed data transmission from superconducting and cryogenic semiconductor circuits. Our...

Zhang, Y M; Piprek, J; Margalit, N; Anzlowar, M; Bowers, J

1999-01-01T23:59:59.000Z

185

E-Print Network 3.0 - anti-rolling active vertical Sample Search...  

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

Nodes Coupled Degrees of Freedom Local Coordinate System... serve to reinforce this load-bearing area. The upper spring perch allows for vertical adjustment... in all three...

186

Optofluidic Three-Cimensional Self-Assembly of Vertically Patterned Microstructures Using Railed Microfluidics  

Science Journals Connector (OSTI)

We demonstrate optofluidic three-dimensional (3D) vertical self-assembly of two-dimensionally patterned microstructures using railed microfluidics. 3D railed assembly method is easy...

Chung, Su Eun; Jung, Yoonseok; Kwon, Sunghoon

187

DIEL MOVEMENT AND VERTICAL DISTRIBUTION OF JUVENILE ANADROMOUS FISH IN TURBINE INTAKES  

E-Print Network (OSTI)

and at the middle of the section of the powerhouse that housed turbines 1 through 12. At McNary Dam, vertical

188

E-Print Network 3.0 - accounting standards-the vertical Sample...  

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

Mathematics 39 Perception, 1998, volume 27, pages 1287-1304 Temporal aspects of slant and inclination perception Summary: transformations) of either horizontal or vertical...

189

E-Print Network 3.0 - africa centre vertical Sample Search Results  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: africa centre vertical Page: << < 1 2 3 4 5 > >> 1 AIDS . Author manuscript Preventing...

190

Multi-channel blind system identification for central hemodynamic monitoring  

E-Print Network (OSTI)

Multi-channel Blind System Identification (MBSI) is a technique for estimating both an unknown input and unknown channel dynamics from simultaneous output measurements at different channels through which the input signal ...

Zhang, Yi, 1973-

2002-01-01T23:59:59.000Z

191

Solution to time-energy costs of quantum channels  

E-Print Network (OSTI)

We derive a formula for the time-energy costs of general quantum channels proposed in [Phys. Rev. A 88, 012307 (2013)]. This formula allows us to numerically find the time-energy cost of any quantum channel using positive semidefinite programming. We also derive a lower bound to the time-energy cost for any channels and the exact the time-energy cost for a class of channels which includes the qudit depolarizing channels and projector channels as special cases.

Chi-Hang Fred Fung; H. F. Chau; Chi-Kwong Li; Nung-Sing Sze

2014-12-16T23:59:59.000Z

192

Multi-channel polarized thermal emitter  

DOE Patents (OSTI)

A multi-channel polarized thermal emitter (PTE) is presented. The multi-channel PTE can emit polarized thermal radiation without using a polarizer at normal emergence. The multi-channel PTE consists of two layers of metallic gratings on a monolithic and homogeneous metallic plate. It can be fabricated by a low-cost soft lithography technique called two-polymer microtransfer molding. The spectral positions of the mid-infrared (MIR) radiation peaks can be tuned by changing the periodicity of the gratings and the spectral separation between peaks are tuned by changing the mutual angle between the orientations of the two gratings.

Lee, Jae-Hwang; Ho, Kai-Ming; Constant, Kristen P

2013-07-16T23:59:59.000Z

193

Complete Muon Cooling Channel Design and Simulations  

SciTech Connect

Considerable progress has been made in developing promising subsystems for muon beam cooling channels to provide the extraordinary reduction of emittances required for an energy-frontier muon collider. However, it has not yet been demonstrated that the various proposed cooling subsystems can be consolidated into an integrated end-to-end design. Presented here are concepts to address the matching of transverse emittances between subsystems through an extension of the theoretical framework of the Helical Cooling Channel (HCC), which allows a general analytical approach to guide the transition from one set of cooling channel parameters to another.

C. Y. Yoshikawa, C.M. Ankenbrandt, R.P. Johnson, Y.S. Derbenev, V.S. Morozov, D.V. Neuffer, K. Yonehara

2012-07-01T23:59:59.000Z

194

Complete Muon Cooling Channel Design and Simulations  

SciTech Connect

Considerable progress has been made in developing promising subsystems for muon beam cooling channels to provide the extraordinary reduction of emittances required for an energy-frontier muon collider. However, it has not yet been demonstrated that the various proposed cooling subsystems can be consolidated into an integrated end-to-end design. Presented here are concepts to address the matching of transverse emittances between subsystems through an extension of the theoretical framework of the Helical Cooling Channel (HCC), which allows a general analytical approach to guide the transition from one set of cooling channel parameters to another.

Neuffer, D.V.; /Fermilab; Ankenbrandt, C.M.; Johnson, R.P.; Yoshikawa, C.Y.; /MUONS Inc., Batavia; Derbenev, Y.S.; Morozov, V.S.; /Jefferson Lab

2012-05-01T23:59:59.000Z

195

Step 7: Determine Loan Marketing Channels | Department of Energy  

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

Financing Step 7: Determine Loan Marketing Channels Step 7: Determine Loan Marketing Channels Integrating financing into the overall energy efficiency marketing campaign is...

196

Channel cracks in atomic-layer and molecular-layer deposited multilayer thin film coatings  

SciTech Connect

Metal oxide thin film coatings produced by atomic layer deposition have been shown to be an effective permeation barrier. The primary failure mode of such coatings under tensile loads is the propagation of channel cracks that penetrate vertically into the coating films. Recently, multi-layer structures that combine the metal oxide material with relatively soft polymeric layers produced by molecular layer deposition have been proposed to create composite thin films with desired properties, including potentially enhanced resistance to fracture. In this paper, we study the effects of layer geometry and material properties on the critical strain for channel crack propagation in the multi-layer composite films. Using finite element simulations and a thin-film fracture mechanics formalism, we show that if the fracture energy of the polymeric layer is lower than that of the metal oxide layer, the channel crack tends to penetrate through the entire composite film, and dividing the metal oxide and polymeric materials into thinner layers leads to a smaller critical strain. However, if the fracture energy of the polymeric material is high so that cracks only run through the metal oxide layers, more layers can result in a larger critical strain. For intermediate fracture energy of the polymer material, we developed a design map that identifies the optimal structure for given fracture energies and thicknesses of the metal oxide and polymeric layers. These results can facilitate the design of mechanically robust permeation barriers, an important component for the development of flexible electronics.

Long, Rong, E-mail: rlongmech@gmail.com [Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 2G8 (Canada); Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309 (United States); Dunn, Martin L. [Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309 (United States); Singapore University of Technology and Design, Singapore 138682 (Singapore)

2014-06-21T23:59:59.000Z

197

Seismic expression of Red Fork channels in Major and Kay Counties, Oklahoma  

SciTech Connect

This paper investigates the application of regional seismic to exploration and development Red Fork sands of the Cherokee Group, in Major and Kay Counties, Oklahoma. A computer-aided exploration system (CAEX) was used to justify the subtle seismic expressions with the geological interpretation. Modeling shows that the low-velocity shales are the anomalous rock in the Cherokee package, which is most represented by siltstone and thin sands. Because the Red Fork channel sands were incised into or deposited with laterally time-equivalent siltstones, no strong reflection coefficient is associated with the top of the sands. The objective sands become a seismic anomaly only when they cut into and replace a low-velocity shale. This knowledge allows mapping the channel thickness by interpreting the shale thickness from seismic data. A group shoot line in Major County, Oklahoma, has been tied to the geologic control, and the channel thicknesses have been interpreted assuming a detectable vertical resolution of 10 ft. A personal computer-based geophysical work station is used to construct velocity logs representative of the geology to produce forward-modeled synthetic seismic sections, and to display, in color, the seismic trace attributes. These synthetic sections are used as tools to compare with and interpret the seismic line and to evaluate the interpretative value of lowest cost, lesser quality data versus reprocessing or new data acquisition.

Hanoch, C.A.

1987-08-01T23:59:59.000Z

198

Advance in Vertical Buffered Electropolishing on Niobium for Particle Accelerators*  

SciTech Connect

Niobium (Nb) is the most popular material that has been employed for making superconducting radio frequency (SRF) cavities to be used in various particle accelerators over the last couple of decades. One of the most important steps in fabricating Nb SRF cavities is the final chemical removal of 150 {mu}m of Nb from the inner surfaces of the SRF cavities. This is usually done by either buffered chemical polishing (BCP) or electropolishing (EP). Recently a new Nb surface treatment technique called buffered electropolishing (BEP) has been developed at Jefferson Lab. It has been demonstrated that BEP can produce the smoothest surface finish on Nb ever reported in the literature while realizing a Nb removal rate as high as 10 {mu}m/min that is more than 25 and 5 times quicker than those of EP and BCP(112) respectively. In this contribution, recent advance in optimizing and understanding BEP treatment technique is reviewed. Latest results from RF measurements on BEP treated Nb single cell cavities by our unique vertical polishing system will be reported.

A.T. Wu, S. Jin, J.D. Mammosser, C.E. Reece, R.A. Rimmer,L. Lin, X.Y. Lu, K. Zhao

2011-09-01T23:59:59.000Z

199

Vertically integrated analysis of human DNA. Final technical report  

SciTech Connect

This project has been oriented toward improving the vertical integration of the sequential steps associated with the large-scale analysis of human DNA. The central focus has been on an approach to the preparation of {open_quotes}sequence-ready{close_quotes} maps, which is referred to as multiple-complete-digest (MCD) mapping, primarily directed at cosmid clones. MCD mapping relies on simple experimental steps, supported by advanced image-analysis and map-assembly software, to produce extremely accurate restriction-site and clone-overlap maps. We believe that MCD mapping is one of the few high-resolution mapping systems that has the potential for high-level automation. Successful automation of this process would be a landmark event in genome analysis. Once other higher organisms, paving the way for cost-effective sequencing of these genomes. Critically, MCD mapping has the potential to provide built-in quality control for sequencing accuracy and to make possible a highly integrated end product even if there are large numbers of discontinuities in the actual sequence.

Olson, M.

1997-10-01T23:59:59.000Z

200

Methods and apparatus for vertical coupling from dielectric waveguides  

SciTech Connect

A frequency-chirped nano-antenna provides efficient sub-wavelength vertical emission from a dielectric waveguide. In one example, this nano-antenna includes a set of plasmonic dipoles on the opposite side of a SiYV.sub.4 waveguide from a ground plane. The resulting structure, which is less than half a wavelength long, emits a broadband beam (e.g., >300 nm) that can be coupled into an optical fiber. In some embodiments, a diffractive optical element with unevenly shaped regions of high- and low-index dielectric material collimates the broadband beam for higher coupling efficiency. In some cases, a negative lens element between the nano-antenna and the diffractive optical element accelerates the emitted beam's divergence (and improves coupling efficiency), allowing for more compact packaging. Like the diffractive optical element, the negative lens element includes unevenly shaped regions of high- and low-index dielectric material that can be designed to compensate for aberrations in the beam emitted by the nano-antenna.

Yaacobi, Ami; Cordova, Brad Gilbert

2014-06-17T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Tunable capillary-induced attraction between vertical cylinders  

E-Print Network (OSTI)

Deformation of a fluid interface caused by the presence of objects at the interface can lead to large lateral forces between the objects. We explore these fluid-mediated attractive force between partially submerged vertical cylinders. Forces are experimentally measured by slowly separating cylinder pairs and cylinder triplets after capillary rise is initially established for cylinders in contact. For cylinder pairs, numerical computations and a theoretical model are found to be in good agreement with measurements. The model provides insight into the relative importance of the contributions to the total force. For small separations, the pressure term dominates, while at large separations, surface tension becomes more important. A cross-over between the two regimes occurs at a separation of around half of a capillary length. The experimentally measured forces between cylinder triplets are also in good agreement with numerical computations, and we show that pair-wise contributions account for nearly all of the attractive force between triplets. For cylinders with equilibrium capillary rise height greater than the height of the cylinder, we find that the attractive force depends on the height of the cylinders above the submersion level, which provides a means to create precisely-controlled tunable cohesive forces between objects deforming a fluid interface.

Jennifer M. Rieser; P. E. Arratia; A. G. Yodh; J. P. Gollub; D. J. Durian

2014-12-02T23:59:59.000Z

202

Constructina the cubic araphs on up to 20 vertices. BrendanD. McKay  

E-Print Network (OSTI)

independentset. The cubic graphs on 16and 18vertices have previously been constructed by Faradzhev, but his by Balaban [I].Petrenjuk and Petrenjuk [lo] found all the cubic graphs on up to 12 vertices and Faradzhev [7 of their properties. As the listing of the graphs produced by Faradzhev is not readily available, we decided to repeat

McKay, Brendan

203

Improving the detection ...1 Improving the detection of On-line Vertical Port Scan  

E-Print Network (OSTI)

Improving the detection ...1 Improving the detection of On-line Vertical Port Scan Improving the detection of On-line Vertical Port Scan in IP Traffic Yousra Chabchoub , Christine Fricker and Philippe to detect port scan attacks in IP traffic. Only relevant information about destination IP addresses

Paris-Sud XI, Université de

204

WIND-TUNNEL STUDY ON AERODYNAMIC PERFORMANCE OF SMALL VERTICAL-AXIS WIND TURBINES  

E-Print Network (OSTI)

1 WIND-TUNNEL STUDY ON AERODYNAMIC PERFORMANCE OF SMALL VERTICAL-AXIS WIND TURBINES J. J. Miau*1 were carried out to study the aerodynamic performance of three vertical axis wind turbines (VAWTs. On the other hand, the characteristics of unsteady flow around the helical wind turbine were studied with a hot

Leu, Tzong-Shyng "Jeremy"

205

CLIMATOLOGY OF VERTICAL AIR MOTION DURING RAINFALL IN NIAMEY, NIGER AND BLACK FOREST, GERMANY USING AN  

E-Print Network (OSTI)

CLIMATOLOGY OF VERTICAL AIR MOTION DURING RAINFALL IN NIAMEY, NIGER AND BLACK FOREST, GERMANY USING in Niamey, Niger and eight months in Germany's Black Forest. The AMF includes a vertically pointing 95 GHz of the orographically influenced precipitation in Germany's mountains. __________ NOTICE: This manuscript has been

206

Optical turbulence vertical distribution with standard and high resolution at Mt Graham  

Science Journals Connector (OSTI)

......are obtained with the standard GS technique. Dotted...achieved so far with standard vertical profilers such...Section 2, we briefly review the principle of the...the C 2 N profiles at standard and high vertical resolution...produce on the detector plan, optically placed below......

E. Masciadri; J. Stoesz; S. Hagelin; F. Lascaux

2010-05-01T23:59:59.000Z

207

All-Fiber Pulsed Lasers Passively Mode-Locked by Transferable Vertically Aligned Carbon Nanotube Film  

E-Print Network (OSTI)

All-Fiber Pulsed Lasers Passively Mode-Locked by Transferable Vertically Aligned Carbon Nanotube of Tokyo, Tokyo 113-8656, Japan An all-fiber passive laser mode locking is realized with a vertically aligned single-walled carbon nanotube film that can be transferred onto an arbitrary substrate using only

Maruyama, Shigeo

208

Mode-locked fiber lasers using vertically aligned carbon nanotubes directly synthesized onto substrates  

E-Print Network (OSTI)

Mode-locked fiber lasers using vertically aligned carbon nanotubes directly synthesized onto novel passively mode-locked fiber lasers using vertically aligned carbon nanotubes synthesized using.4890) Organic materials 1. Introduction Passively mode-locked fiber lasers have been used in many applications

Maruyama, Shigeo

209

DESIGN AND EVALUATION OF A SAMPLER FOR MEASURING THE NEAR-BOTTOM VERTICAL DISTRIBUTION OF  

E-Print Network (OSTI)

DESIGN AND EVALUATION OF A SAMPLER FOR MEASURING THE NEAR-BOTTOM VERTICAL DISTRIBUTION OF PINK distribution of shrimp was considered essential to the design of an effective shrimp trawl since the vertical. Subsequently a multipurpose shrimp sampler was designed to facilitate investigation of shrimp distributions

210

A novel offset vertical comb-driven micromirror as an optical phase modulator  

Science Journals Connector (OSTI)

This paper presents an offset comb-driven micromirror with out-of-plane piston motion as an optical phase modulator (OPM) with high modulating accuracy. The upper and lower comb fingers of the comb-driver initially do not overlap, with a vertical offset ... Keywords: Micromirror, Optical phase modulator, Self-alignment process, Three-layer-mask process, Vertical comb actuator

Leiying Zhai; Jing Xu; Shaolong Zhong; Yaming Wu

2013-05-01T23:59:59.000Z

211

Polar anchoring energy measurement of vertically aligned liquid-crystal cells  

E-Print Network (OSTI)

Polar anchoring energy measurement of vertically aligned liquid-crystal cells Xiangyi Nie July 2005 An electric-field method is developed for measuring the polar anchoring energy of vertically-electric-field technique3 is most commonly employed for measuring the polar anchor- ing energy. However, some inconsistent

Wu, Shin-Tson

212

Ris-R-Report Analysis of vertical wind direction and speed  

E-Print Network (OSTI)

Risø-R-Report Analysis of vertical wind direction and speed gradients for data from the met. mast Cariou, Rozenn Wagner, Julia Gottschall Title: Analysis of vertical wind direction and speed gradients. Finally, the direction shear was analysed as function of wind speed and compared to the corresponding

213

Integration of a waveguide self-electrooptic effect device and a vertically coupled interconnect waveguide  

DOE Patents (OSTI)

A self-electrooptic effect device ("SEED") is integrated with waveguide interconnects through the use of vertical directional couplers. Light initially propagating in the interconnect waveguide is vertically coupled to the active waveguide layer of the SEED and, if the SEED is in the transparent state, the light is coupled back to the interconnect waveguide.

Vawter, G. Allen (Corrales, NM)

2008-02-26T23:59:59.000Z

214

Soft-X-Ray-Charged Vertical Electrets and Its Application to Electrostatic Transducers  

E-Print Network (OSTI)

Soft-X-Ray-Charged Vertical Electrets and Its Application to Electrostatic Transducers Makoto A novel charging method for vertical electrets in narrow gaps using soft X-rays has been developed is necessary after charging the electrets. Recently, we have developed a new charging method using soft X-ray

Kasagi, Nobuhide

215

Scripps Channel 1 | Open Energy Information  

Open Energy Info (EERE)

Scripps Channel 1 Scripps Channel 1 Jump to: navigation, search Basic Specifications Facility Name Scripps Channel 1 Overseeing Organization University of California, San Diego (Scripps) Hydrodynamic Testing Facility Type Channel Length(m) 44.5 Beam(m) 2.4 Depth(m) 2.4 Cost(per day) Contact POC Special Physical Features Strategically placed windows, longest being 5.5m, allow optical access from side Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 2 Length of Effective Tow(m) 7.0 Wavemaking Capabilities Wavemaking Capabilities Yes Maximum Wave Height(m) 0.6 Maximum Wave Height(m) at Wave Period(s) 10.0 Wave Period Range(s) 10.0 Current Velocity Range(m/s) 0.0 Programmable Wavemaking Yes Wavemaking Description Function Generator or user provided Wave Direction Uni-Directional

216

Scripps Channel 2 | Open Energy Information  

Open Energy Info (EERE)

Channel 2 Channel 2 Jump to: navigation, search Basic Specifications Facility Name Scripps Channel 2 Overseeing Organization University of California, San Diego (Scripps) Hydrodynamic Testing Facility Type Channel Length(m) 33.0 Beam(m) 0.5 Depth(m) 0.5 Cost(per day) Contact POC Special Physical Features All side walls and 11m of the tank bottom are glass to provide optical access. Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 0.7 Length of Effective Tow(m) 20.0 Wavemaking Capabilities Wavemaking Capabilities Yes Maximum Wave Height(m) 0.3 Maximum Wave Height(m) at Wave Period(s) 10.0 Wave Period Range(s) 0.0 Current Velocity Range(m/s) 0.0 Programmable Wavemaking Yes Wavemaking Description Function Generator or user provided Wave Direction Uni-Directional

217

Weak multiplicativity for random quantum channels  

E-Print Network (OSTI)

It is known that random quantum channels exhibit significant violations of multiplicativity of maximum output p-norms for any p>1. In this work, we show that a weaker variant of multiplicativity nevertheless holds for these channels. For any constant p>1, given a random quantum channel N (i.e. a channel whose Stinespring representation corresponds to a random subspace S), we show that with high probability the maximum output p-norm of n copies of N decays exponentially with n. The proof is based on relaxing the maximum output infinity-norm of N to the operator norm of the partial transpose of the projector onto S, then calculating upper bounds on this quantity using ideas from random matrix theory.

Montanaro, Ashley

2011-01-01T23:59:59.000Z

218

Optimal unitary dilation for bosonic Gaussian channels  

SciTech Connect

A general quantum channel can be represented in terms of a unitary interaction between the information-carrying system and a noisy environment. In this paper the minimal number of quantum Gaussian environmental modes required to provide a unitary dilation of a multimode bosonic Gaussian channel is analyzed for both pure and mixed environments. We compute this quantity in the case of pure environment corresponding to the Stinespring representation and give an improved estimate in the case of mixed environment. The computations rely, on one hand, on the properties of the generalized Choi-Jamiolkowski state and, on the other hand, on an explicit construction of the minimal dilation for arbitrary bosonic Gaussian channel. These results introduce a new quantity reflecting ''noisiness'' of bosonic Gaussian channels and can be applied to address some issues concerning transmission of information in continuous variables systems.

Caruso, Filippo [Institut fuer Theoretische Physik, Universitaet Ulm, Albert-Einstein-Allee 11, D-89069 Ulm (Germany); Eisert, Jens [Dahlem Center for Complex Quantum Systems, Freie Universitaet Berlin, D-14195 Berlin (Germany); Giovannetti, Vittorio [NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, Piazza dei Cavalieri 7, I-56126 Pisa (Italy); Holevo, Alexander S. [Steklov Mathematical Institute, Gubkina 8, RU-119991 Moscow (Russian Federation)

2011-08-15T23:59:59.000Z

219

Longitudinal profile of channels cut by springs  

E-Print Network (OSTI)

We propose a simple theory for the longitudinal profile of channels incised by groundwater flow. The aquifer surrounding the stream is represented in two dimensions through Darcy's law and the Dupuit approximation. The ...

Devauchelle, O.

220

Channelized voice over digital subscriber line  

E-Print Network (OSTI)

The objective of this article is to present a promising voice over digital subscriber line (VoDSL) solution: an alternative method that uses physical layer transportation to provide channelized VoDSL (CVoDSL). This article ...

Habib, A.; Saiedian, Hossein

2002-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Message passing with queues and channels  

DOE Patents (OSTI)

In an embodiment, a send thread receives an identifier that identifies a destination node and a pointer to data. The send thread creates a first send request in response to the receipt of the identifier and the data pointer. The send thread selects a selected channel from among a plurality of channels. The selected channel comprises a selected hand-off queue and an identification of a selected message unit. Each of the channels identifies a different message unit. The selected hand-off queue is randomly accessible. If the selected hand-off queue contains an available entry, the send thread adds the first send request to the selected hand-off queue. If the selected hand-off queue does not contain an available entry, the send thread removes a second send request from the selected hand-off queue and sends the second send request to the selected message unit.

Dozsa, Gabor J; Heidelberger, Philip; Kumar, Sameer; Ratterman, Joseph D; Steinmacher-Burow, Burkhard; Wisniewski, Robert W

2013-09-24T23:59:59.000Z

222

Flag flutter in inviscid channel flow  

E-Print Network (OSTI)

Using nonlinear vortex-sheet simulations, we determine the region in parameter space in which a straight flag in a channel-bounded inviscid flow is unstable to flapping motions. We find that for heavier flags, greater confinement increases the size of the region of instability. For lighter flags, confinement has little influence. We then compute the stability boundaries analytically for an infinite flag, and find similar results. For the finite flag we also consider the effect of channel walls on the large-amplitude periodic flapping dynamics. We find that multiple flapping states are possible but rare at a given set of parameters, when periodic flapping occurs. As the channel walls approach the flag, its flapping amplitude decreases roughly in proportion to the near-wall distance, for both symmetric and asymmetric channels. Meanwhile, its dominant flapping frequency and mean number of deflection extrema (or "wavenumber") increase in a nearly stepwise fashion. That is, they remain nearly unchanged over a wide...

Alben, Silas

2014-01-01T23:59:59.000Z

223

Genetic Engineering and Cardiac Ion Channels  

Science Journals Connector (OSTI)

In recent years there have been significant advances in our understanding of the molecular basis of the electrical activity of the heart with the cloning of many ion channel sub-units [1] and descriptions of t...

Andrew A. Grace; Richard C. Saumarez…

1999-01-01T23:59:59.000Z

224

Multi-channel coded-aperture photography  

E-Print Network (OSTI)

This thesis describes the multi-channel coded-aperture photography, a modified camera system that can extract an all-focus image of the scene along with a depth estimate over the scene. The modification consists of inserting ...

Baek, Jongmin

2008-01-01T23:59:59.000Z

225

Time varying channels : characterization, estimation, and detection  

E-Print Network (OSTI)

overall, then the Doppler’s effect of smearing the symbol into note the effect on normalized Doppler of increasing theis the ICI, a direct effect of the Doppler induced channel

Ricklin, Nathan D.

2010-01-01T23:59:59.000Z

226

ARM - PI Product - Cloud-Scale Vertical Velocity and Turbulent Dissipation  

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

ProductsCloud-Scale Vertical Velocity and Turbulent ProductsCloud-Scale Vertical Velocity and Turbulent Dissipation Rate Retrievals Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Cloud-Scale Vertical Velocity and Turbulent Dissipation Rate Retrievals Site(s) NSA General Description Time-height fields of retrieved in-cloud vertical wind velocity and turbulent dissipation rate, both retrieved primarily from vertically-pointing, Ka-band cloud radar measurements. Files are available for manually-selected, stratiform, mixed-phase cloud cases observed at the North Slope of Alaska (NSA) site during periods covering the Mixed-Phase Arctic Cloud Experiment (MPACE, late September through early November 2004) and the Indirect and Semi-Direct Aerosol Campaign (ISDAC, April-early May

227

Digitally Assisted Multi-Channel Receivers  

E-Print Network (OSTI)

-channel charge sampling receivers with sinc filter banks together with a complete system calibration and synchronization algorithm for the receiver. A unified model has been defined for the receiver containing all first order mismatches, offsets... and imperfections and a technique based on least mean squares algorithm is employed to track these errors. The performance of this technique under noisy channel conditions has been verified. The sinc filter bank is compared with the conventional analog filter...

Pentakota, Krishna Anand Santosh Spikanth

2011-10-21T23:59:59.000Z

228

Quantum capacity of channel with thermal noise  

E-Print Network (OSTI)

The quantum capacity of thermal noise channel is studied. The extremal input state is obtained at the postulation that the coherent information is convex or concave at its vicinity. When the input energy tends to infinitive, it is verified by perturbation theory that the coherent information reaches its maximum at the product of identical thermal state input. The quantum capacity is obtained for lower noise channel and it is equal the one shot capacity.

Xiao-yu Chen

2006-02-11T23:59:59.000Z

229

Flow regime mapping of vertical two-phase downflow in a ribbed annulus  

SciTech Connect

Two-phase flow regimes have been mapped for vertical, cocurrent downflow in a narrow annulus which is partially segmented by the presence of longitudinal ribs. This geometry and flow condition has application to the analysis of a Large-Break Loss of Coolant Accident (LB-LOCA) in the production K-Reactor at the Savannah River Site (SRS). The ribbed annular geometry, particularly the presence of non-sealing ribs, gives rise to some unique phenomenological features. The flow behavior is influenced by the partial segmentation of the annulus into four quadrants or subchannels. A random element is induced by the natural bowing of the slender tubes; the width of the azimuthal flow path between two subchannels at a given axial location is indeterminate, and can take on any value between zero and the maximum clearance of 7.6 [times] l0[sup [minus]4] m. When the rib gap is zero at a given location, it is at a maximum 180P away at the same axial location. The range of rib gaps is spanned in a single test section, as it would be also in a reactor assembly. As a result of these effects, flow regime maps obtained by other researchers for downflow in annuli are not accurate for defining flow regimes in a ribbed annulus. Flow regime transitions similar to those noted by, e.g., Bamea, were observed; the locations of these transitions were displaced with respect to the transition equations derived by Bamea. Experimental bubble rise velocity measurements were also obtained in the same test section. The bubble rise velocities were much higher than expected from the theory developed for slug bubbles in tubes, unribbed annuli, and rectangular channels. An elliptical-cap bubble rises faster than a slug bubble of the same area. Large, slug-shaped bubbles injected into the test section were observed to reduce in size as they rose, due to interaction with a longitudinal rib. They thereby adopted a shape more like an elliptical-cap bubble, hence rising faster than the original slug bubble.

Kielpinski, A.L.

1992-01-01T23:59:59.000Z

230

Flow regime mapping of vertical two-phase downflow in a ribbed annulus  

SciTech Connect

Two-phase flow regimes have been mapped for vertical, cocurrent downflow in a narrow annulus which is partially segmented by the presence of longitudinal ribs. This geometry and flow condition has application to the analysis of a Large-Break Loss of Coolant Accident (LB-LOCA) in the production K-Reactor at the Savannah River Site (SRS). The ribbed annular geometry, particularly the presence of non-sealing ribs, gives rise to some unique phenomenological features. The flow behavior is influenced by the partial segmentation of the annulus into four quadrants or subchannels. A random element is induced by the natural bowing of the slender tubes; the width of the azimuthal flow path between two subchannels at a given axial location is indeterminate, and can take on any value between zero and the maximum clearance of 7.6 {times} l0{sup {minus}4} m. When the rib gap is zero at a given location, it is at a maximum 180P away at the same axial location. The range of rib gaps is spanned in a single test section, as it would be also in a reactor assembly. As a result of these effects, flow regime maps obtained by other researchers for downflow in annuli are not accurate for defining flow regimes in a ribbed annulus. Flow regime transitions similar to those noted by, e.g., Bamea, were observed; the locations of these transitions were displaced with respect to the transition equations derived by Bamea. Experimental bubble rise velocity measurements were also obtained in the same test section. The bubble rise velocities were much higher than expected from the theory developed for slug bubbles in tubes, unribbed annuli, and rectangular channels. An elliptical-cap bubble rises faster than a slug bubble of the same area. Large, slug-shaped bubbles injected into the test section were observed to reduce in size as they rose, due to interaction with a longitudinal rib. They thereby adopted a shape more like an elliptical-cap bubble, hence rising faster than the original slug bubble.

Kielpinski, A.L.

1992-12-01T23:59:59.000Z

231

Vertical Variability in Saturated Zone Hydrochemistry Near Yucca Mountain, Nevada  

SciTech Connect

The differences in the saturated zone hydrochemistry with depth at borehole NC-EWDP-22PC reflect the addition of recharge along Fortymile Wash. The differences in water chemistry with depth at borehole NC-EWDP-19PB appear to indicate that other processes are involved. Water from the lower part of NC-EWDP-19PB possesses chemical characteristics that clearly indicate that it has undergone cation exchange that resulted in the removal of calcium and magnesium and the addition of sodium. This water is very similar to water from the Western Yucca Mountain facies that has previously been thought to flow west of NC-EWDP-19PB. Water from the lower zone in NC-EWDP-19PB also could represent water from the Eastern Yucca Mountain facies that has moved through clay-bearing or zeolitized aquifer material resulting in the altered chemistry. Water chemistry from the upper part of the saturated zone at NC-EWDP-19PB, both zones at NC-EWDP-22PC, and wells in the Fortymile Wash facies appears to be the result of recharge through the alluvium south of Yucca Mountain and within the Fortymile Wash channel.

G. Patterson; P. Striffler

2007-02-17T23:59:59.000Z

232

Poly(ethylene glycol)-based open-channel blockers for the acetylcholine receptor : mechanistic and structure-function studies at the single-channel level  

E-Print Network (OSTI)

Ion channels are essential mediators in nervous signaling pathways. Because hyperactivation of ion channels can lead to pathological disorders such as congenital myasthenic syndromes and neurodegeneration, channel inhibitors ...

Lin, Wan-Chen, Ph. D. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

233

Joint source channel coding for non-ergodic channels: the distortion signal-to-noise ratio (SNR) exponent perspective  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . 8 II DISTORTION SNR EXPONENT FOR THE AWGN CHANNEL 10 A. Introduction and Problem Statement . . . . . . . . . . . . 10 B. Informed Transmitter Upper Bound . . . . . . . . . . . . . 12 C. Prior Work... mean square error, a simple joint source channel coding scheme that involves just transmitting the source over the channel with appropriate power scaling is optimal [1,2]. Some advantages and disadvantages of joint source channel coding are discussed...

Bhattad, Kapil

2008-10-10T23:59:59.000Z

234

Projections of the Tropical Atlantic Vertical Wind Shear and Its Relationship with ENSO in SP-CCSM4  

Science Journals Connector (OSTI)

The vertical wind shear over the tropical Atlantic Ocean and its relationship with ENSO are analyzed in the superparameterized Community Climate System Model, version 4 (SP-CCSM4) and in the conventional CCSM4. The climatology of vertical wind ...

Xiaojie Zhu; Li Xu; Cristiana Stan

2014-11-01T23:59:59.000Z

235

Design and Analysis of the ITER Vertical Stability Coils  

SciTech Connect

The ITER vertical stability (VS) coils have been developed through the preliminary design phase by Princeton Plasma Physics Laboratory (PPPL). Final design, prototyping and construction will be carried out by the Chinese Participant Team contributing lab, Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). The VS coils are a part of the in-vessel coil systems which include edge localized mode (ELM) coils as well as the VS coils. An overview of the ELM coils is provided in another paper at this conference. 15 The VS design employs four turns of stainless steel jacketed mineral insulated copper (SSMIC) conductors The mineral insulation is Magnesium Oxide (MgO). Joule and nuclear heat is removed by water flowing at 3 m/s through the hollow copper conductor. A key element in the design is that slightly elevated temperatures in the conductor and its support spine during operation impose compressive stresses that mitigate fatigue damage. Away from joints, and break-outs, conductor thermal stresses are low because of the axisymmetry of the winding (there are no corner bends as in the ELM coils).The 120 degree segment joint, and break-out or terminal regions are designed with similar but imperfect constraint compared with the ring coil portion of the VS. The support for the break-out region is made from a high strength copper alloy, CuCrZr. This is needed to conduct nuclear heat to the actively cooled conductor and to the vessel wall. The support "spine" for the ring coil portion of the VS is 316 stainless steel, held to the vessel with preloaded 718 bolts. Lorentz loads resulting from normal operating loads, disruption loads and loads from disruption currents in the support spine shared with vessel, are applied to the VS coil. The transmission of the Lorentz and thermal expansion loads from the "spine" to the vessel rails is via friction augmented with a restraining "lip" to ensure the coil frictional slip is minimal and acceptable. Stresses in the coil, joints, and break-outs are presented. These are compared with static and fatigue allowables. Design for fatigue is much less demanding than for the ELM coils. A total of 30,000 cycles is required for VS design. Loads on the vessel due to the thermal expansion of the coil and spine are significant. Efforts to reduce these by reducing the cross section of the spine have been made but the vessel still must support loads resulting from restraint of thermal expansion.

Peter H. Titus, et. al.

2012-09-06T23:59:59.000Z

236

Coupled-channel continuum eigenchannel basis  

E-Print Network (OSTI)

The goal of this paper is to calculate bound, resonant and scattering states in the coupled-channel formalism without relying on the boundary conditions at large distances. The coupled-channel solution is expanded in eigenchannel bases i.e. in eigenfunctions of diagonal Hamiltonians. Each eigenchannel basis may include discrete and discretized continuum (real or complex energy) single particle states. The coupled-channel solutions are computed through diagonalization in these bases. The method is applied to a few two-channels problems. The exact bound spectrum of the Poeschl-Teller potential is well described by using a basis of real energy continuum states. For deuteron described by Reid potential, the experimental energy and the S and D contents of the wave function are reproduced in the asymptotic limit of the cutoff energy. For the Noro-Taylor potential resonant state energy is well reproduced by using the complex energy Berggren basis. It is found that the expansion of the coupled-channel wave function in these eigenchannel bases require less computational efforts than the use of any other basis. The solutions are stable and converge as the cutoff energy increases.

R. M. Id Betan

2013-11-18T23:59:59.000Z

237

FSI Modeling of Vertical-Axis Wind Turbines Y. Bazilevs, A. Korobenko, X. Deng, and J. Yan  

E-Print Network (OSTI)

FSI Modeling of Vertical-Axis Wind Turbines Y. Bazilevs, A. Korobenko, X. Deng, and J. Yan-dependent aerodynamics and fluid-structure interaction (FSI) simula- tions of a Darrieus-type vertical-axis wind turbine compared to the vertical-axis wind turbine (VAWT) designs. However, smaller-size VAWTs are more suitable

Dabiri, John O.

238

French vertical flow constructed wetlands: reed bed behaviour and limits due to hydraulic overloading on first stage filters  

E-Print Network (OSTI)

French vertical flow constructed wetlands: reed bed behaviour and limits due to hydraulic with the European standards. Keywords: Vertical flow constructed wetlands; hydraulic overload; hydraulic behaviour. INTRODUCTION Vertical flow constructed wetlands (VFCWs) have been very successful in France over the last five

Paris-Sud XI, Université de

239

Peter Agre and Aquaporin Water Channels  

Office of Scientific and Technical Information (OSTI)

Peter Agre and Aquaporin Water Channels Peter Agre and Aquaporin Water Channels Resources with Additional Information Peter Agre Courtesy of Johns Hopkins University 'Peter Agre, MD received the Nobel Prize in Chemistry in 2003 for his work with aquaporins, a family of water channel proteins found throughout nature and responsible for numerous physiological processes in humans.'1 'Dr. Agre received his BA in chemistry from Augsburg College in 1970, and his MD from Johns Hopkins in 1974. Following an Internal Medicine Residency at Case Western Reserve University Hospitals of Cleveland and a Hematology-Oncology Fellowship at the University of North Carolina at Chapel Hill, Dr. Agre returned to Johns Hopkins as a postdoctoral fellow in cell biology. Dr. Agre joined the faculty in 1984 and has spent most of his professional life at Hopkins' School of Medicine, leaving in 2005 to go to become Vice Chancellor for Science and Technology at Duke University Medical Center.'2

240

Renormalizing Chiral Nuclear Forces: Triplet Channels  

SciTech Connect

We discuss the subleading contact interactions, or counterterms, of the triplet channels of nucleon-nucleon scattering in the framework of chiral effective field theory, with S and P waves as the examples. The triplet channels are special in that it allows the singular attraction of one-pion exchange to modify Weinberg's original power counting (WPC) scheme. With renormalization group invariance as the constraint, our power counting for the triplet channels can be summarized as a modified version of naive dimensional analysis that, when compared with WPC, the subleading counterterms are enhanced as much as the leading one. More specifically, this means that WPC needs no modification in {sup 3}S{sub 1}-{sup 3}D{sub 1} and {sup 3}P{sub 1} whereas a two-order enhancement is necessary in both {sup 3}P{sub 0} and {sup 3}P{sub 2} - {sup 3}F{sub 2}.

Bingwei Long, Chieh-Jen Yang

2012-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow  

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

Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow Control Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow Control Adaptive Detached Eddy Simulation of a Vertical Tail with Active Flow Control PI Name: Kenneth Jansen PI Email: jansenke@colorado.edu Institution: University of Colorado Allocation Program: INCITE Allocation Hours at ALCF: 40 Million Year: 2012 Research Domain: Engineering The use of fuel-and its accompanying costs-has become an increasing concern in many industries. Researchers are examining the issue of fuel reduction in commercial jet aircraft from the perspective of redesign. By redesigning the vertical tail of a commercial jet, they hope to reduce jet fuel use by 0.5%, resulting in annual savings of $300 million. Using -synthetic commercial jet aircraft, the team will perform a series

242

ARM - PI Product - SGP and TWP (Manus) Ice Cloud Vertical Velocities  

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

ProductsSGP and TWP (Manus) Ice Cloud Vertical ProductsSGP and TWP (Manus) Ice Cloud Vertical Velocities Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : SGP and TWP (Manus) Ice Cloud Vertical Velocities 1997.01.01 - 2010.12.31 Site(s) SGP TWP General Description Daily netcdf-files of ice-cloud dynamics observed at the ARM sites at SGP (Jan1997-Dec2010) and Manus (Jul1999-Dec2010). The files include variables at different time resolution (10s, 20min, 1hr). Profiles of radar reflectivity factor (dbz), Doppler velocity (vel) as well as retrieved vertical air motion (V_air) and reflectivity-weighted particle terminal fall velocity (V_ter) are given at 10s, 20min and 1hr resolution. Lower level clouds are removed, however a multi-layer flag is included.

243

Achieving large stable vertical displacement in surface-micromachined microelectromechanical systems (MEMS)  

E-Print Network (OSTI)

This thesis describes electrostatic actuation techniques and mechanical design features for realizing large planar analog vertical travel in an electrostatically actuated diffractive mid-infrared optical device, which is ...

Deutsch, Erik R. (Erik Robertson), 1974-

2002-01-01T23:59:59.000Z

244

Development of a Digital Controller for a Vertical Wind Tunnel (VWT) Prototype to Mitigate Ball Fluctuations  

E-Print Network (OSTI)

The objective of this research was to mitigate fluctuations of a levitated ping pong ball within a vertical wind tunnel (VWT) prototype. This was made possible by remodeling the VWT system with its inherent nonlinear characteristics instead...

Silva, Ramon A.

2011-08-08T23:59:59.000Z

245

The Influence of Turbulence and Vertical Wind Profile in Wind Turbine Power Curve  

Science Journals Connector (OSTI)

To identify the influence of turbulence and vertical wind profile in wind turbine performance, wind speed measurements at different heights have been ... equipment, specifically a pulsed wave one. The wind profil...

A. Honrubia; A. Vigueras-Rodríguez…

2012-01-01T23:59:59.000Z

246

Stabilization of unstable vertical position of plasma in T-15 tokamak. II  

Science Journals Connector (OSTI)

The paper is devoted to the development and mathematical modeling of a stabilization system for unstable vertical plasma position in a T-15 tokamak (Institute of Tokamak Physics, NSC “Kurchatov Institute”). In .....

Yu. V. Mitrishkin; N. M. Kartsev; S. M. Zenkov

2014-09-01T23:59:59.000Z

247

E-Print Network 3.0 - active vertical fin Sample Search Results  

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

Summary: active to tilt the caudal fin at an angle to the vertical 26. In some fish, especially those known... . Low-aspect ratio pectoral fins in sharks function to alter...

248

Analytical Modeling of Wood Frame Shear Walls Subjected to Vertical Load  

E-Print Network (OSTI)

A nonlinear automated parameter fitted analytical model that numerically predicts the load-displacement response of wood frame shear walls subjected to static monotonic loading with and without vertical load is presented. This analytical model...

Nguyendinh, Hai

2011-08-08T23:59:59.000Z

249

Spring-neap modulation of internal tide mixing and vertical nitrate ...  

Science Journals Connector (OSTI)

Sep 1, 2007 ... Measurements of the intra-tidal and spring–neap variation in the vertical flux of nitrate into ... ultimately dissipates the energy of the internal tide.

2007-08-13T23:59:59.000Z

250

Economies of scope in electricity supply and the costs of vertical separation for different unbundling scenarios  

Science Journals Connector (OSTI)

Motivated by the movement towards vertical unbundling in Europe this study measures the economies of scope for the U.S. electricity industry based on a multi-stage cost function. The paper analyzes three unbundli...

Roland Meyer

2012-08-01T23:59:59.000Z

251

Extreme Precipitation in an Atmosphere General Circulation Model: Impact of Horizontal and Vertical Model Resolution  

Science Journals Connector (OSTI)

To investigate the influence of atmospheric model resolution on the representation of daily precipitation extremes, ensemble simulations with the atmospheric general circulation model ECHAM5 at different horizontal (T213 to T31) and vertical (L31 ...

Claudia Volosciuk; Douglas Maraun; Vladimir A. Semenov; Wonsun Park

252

A Simple Model of Climatological Rainfall and Vertical Motion Patterns over the Tropical Oceans  

E-Print Network (OSTI)

A simple model is developed that predicts climatological rainfall, vertical motion, and diabatic heating profiles over the tropical oceans given the sea surface temperature (SST), using statistical relationships deduced ...

Back, Larissa E.

253

Macro scale physical model of nanoindentation on vertically aligned carbon nanotube forests  

E-Print Network (OSTI)

Currently the process of nanoindentation is being explored as a reliable means of determining the mechanical properties of carbon nanotubes (CNTs) and the constituent tubes of vertically aligned carbon nanotube (VACNT) ...

Ebeling, Geoffrey F. (Geoffrey Foster), 1981-

2004-01-01T23:59:59.000Z

254

Flooding Experiments with Steam and Water in a Large Diameter Vertical Tube  

E-Print Network (OSTI)

An experimental study on flooding with steam and water in a large diameter vertical tube was conducted. This research has been performed to provide a better prediction of flooding in a pressurized water reactor (PWR) pressurizer surge line...

Williams, Susan Nicole

2010-10-12T23:59:59.000Z

255

Initial Testing of a Numerical Ocean Circulation Model Using a Hybrid (Quasi-Isopycnic) Vertical Coordinate  

Science Journals Connector (OSTI)

An ocean circulation model, developed for the study of mesoscale to gyre-scale circulation and heat transport, is described and tested. The model employs density as vertical coordinate except in the immediate vicinity of possible coordinate ...

Rainer Bleck; Douglas B. Boudra

1981-06-01T23:59:59.000Z

256

Effect of Ionic Stabilization on Vertical Movement in Expansive Subgrade Soils in Texas  

E-Print Network (OSTI)

An important consideration for the successful design of flexible pavement systems in Texas is the prediction and control of the vertical change in height of the subgrade soils due to swelling upon wetting and shrinkage upon drying. The purpose...

Hariharan, Narain

2013-07-31T23:59:59.000Z

257

A PURELY NUMERICAL APPROACH FOR ANALYZING FLOW TO A WELL INTERCEPTING A VERTICAL FRACTURE  

E-Print Network (OSTI)

W.R. Effect of vertical fracture on reservoir behavior --of deep, penetrating fractures in the wattenberg Field.flow through a single fracture. PhD Dissertation, Department

Narasimhan, T.N.

2011-01-01T23:59:59.000Z

258

Spherical harmonic series solution of fields excited by vertical electric dipole in earth-ionosphere cavity  

Science Journals Connector (OSTI)

The spherical harmonic series expression of electromagnetic fields excited by ELF/SLF vertical electric dipole in the spherical earth- ... the sum of two traveling waves in the SLF band. Moreover, the results are...

Yuanxin Wang; Wensheng Fan; Weiyan Pan…

2008-01-01T23:59:59.000Z

259

The Accuracy of Radar Estimates of Ice Terminal Fall Speed from Vertically Pointing Doppler Radar Measurements  

Science Journals Connector (OSTI)

Doppler radar measurements at different frequencies (50 and 2835 MHz) are used to characterize the terminal fall speed of hydrometeors and the vertical air motion in tropical ice clouds and to evaluate statistical methods for retrieving these two ...

Alain Protat; Christopher R. Williams

2011-10-01T23:59:59.000Z

260

Measurements of Wind Speed, Direction, and Vertical Profiles in an Evergreen Forest in Central Cambodia  

Science Journals Connector (OSTI)

The wind characteristics of speed, direction, and vertical profile were studied ... Thom Province, Cambodia. Three seasonal patterns of wind speeds and directions were identified. The first occurred ... , as well...

Koji Tamai; Akira Shimizu…

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Vertical transport and residence time of chlorinated hydrocarbons in the open ocean water column  

Science Journals Connector (OSTI)

The vertical transport of PCBs and chlorinated hydrocarbon pesticides such as DDT compounds and HCH ... of their adsorbed and dissolved fractions in surface water surveyed in the Western Pacific, Eastern Indian.....

Shinsuke Tanabe; Ryo Tatsukawa

1983-04-01T23:59:59.000Z

262

Pollution control: A Houston Ship Channel issue.  

E-Print Network (OSTI)

. B Ibid. , p. 161. 17 following the Japanese attack on Pearl Harbor. The immediate effect on the Houston Ship Channel was a reduction in its normal maritime activity as shipping was diverted to East and West coast ports. This diversion was only... since 1951, but the study did express "some concern" with the Houston Ship Channel which it zeported was " . . . showing effects of water discharges". 5 Another point of view was expressed by Dr. Walter A. Quebedeaux. In 195/4 Dr. Quebedeaux became...

Williams, Edward Barney

2012-06-07T23:59:59.000Z

263

A placement model for matrix acidizing of vertically extensive, multilayer gas reservoirs  

E-Print Network (OSTI)

A PLACEMENT MODEL FOR MATRIX ACIDIZING OF VERTICALLY EXTENSIVE, MULTILAYER GAS RESERVOIRS A Thesis by MANABU NOZAKI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 2008 Major Subject: Petroleum Engineering A PLACEMENT MODEL FOR MATRIX ACIDIZING OF VERTICALLY EXTENSIVE, MULTILAYER GAS RESERVOIRS A Thesis by MANABU NOZAKI Submitted to the Office...

Nozaki, Manabu

2008-10-10T23:59:59.000Z

264

Identification of subsurface fractures in the Austin Chalk using vertical seismic profiles  

E-Print Network (OSTI)

IDENTIFICATION OF SUSSURFACE FRACTURES IN THE AUSTIN CHALK USING VERTICAL SEISMIC PROFILES A Thesis by KYLE THOMAS LEWALLEN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August 1992 Major Subject: Geophysics IDENTIFICATION OF SUBSURFACE FRACTURES IN THE AUSTIN CHALK USING VERTICAL SEISMIC PROFILES A Thesis by KYLE THOMAS LEWALLEN Approved as to style and content by: T. W. Spencer...

Lewallen, Kyle Thomas

1992-01-01T23:59:59.000Z

265

TSC plasma halo simulation of a DIII-D vertical displacement episode  

SciTech Connect

A benchmark of the Tokamak Simulation Code (TSC) plasma halo model has been achieved by calibration against a DIII-D vertical displacement episode (VDE) consisting of vertical drift, thermal quench, and current quench. Inclusion of a 1-to 4-eV halo surrounding the main plasma was found to be necessary to match simulation and experimental results for plasma current decay, trajectory, toroidal and poloidal vessel currents, and magnetic probe and flux loop values for the entire VDE.

Sayer, R.O.; Peng, Y.K.M. [Oak Ridge National Lab., TN (United States); Jardin, S.C. [Princeton Univ., NJ (United States). Plasma Physics Lab.; Kellman, A.G.; Wesley, J.C. [General Atomics, San Diego, CA (United States)

1993-01-01T23:59:59.000Z

266

Satellite photography as a means of evaluating the equations of vertical motion  

E-Print Network (OSTI)

Vertical Motion . . ~ . ~ Problems Arising in the Determina- tion of Vertical Motions. Weather' Satellites II ANALYSIS PROCEDURE General Source of Data Satellite and Synoptic Weather Observations Computational Procedures Kinematic Method... of weather situations and cloud patterns was present. It should be noted that on these dates the satellite (TIROS) pictures were taken close to the synoptic observation time, thus simplifying the use of the pictures in the verification of results...

Hansen, John

2012-06-07T23:59:59.000Z

267

Pore-fluid effects on seismic waves in vertically fractured earth with orthotropic symmetry  

SciTech Connect

For elastically noninteracting vertical-fracture sets at arbitrary orientation angles to each other, a detailed model is presented in which the resulting anisotropic fractured medium generally has orthorhombic symmetry overall. Some of the analysis methods and ideas of Schoenberg are emphasized, together with their connections to other similarly motivated and conceptually related methods by Sayers and Kachanov, among others. Examples show how parallel vertical-fracture sets having HTI (horizontal transversely isotropic) symmetry transform into orthotropic fractured media if some subsets of the vertical fractures are misaligned with the others, and then the fractured system can have VTI (vertical transversely isotropic) symmetry if all of the fractures are aligned randomly or half parallel and half perpendicular to a given vertical plane. An orthotropic example having vertical fractures in an otherwise VTI earth system (studied previously by Schoenberg and Helbig) is compared with the other examples treated and it is finally shown how fluids in the fractures affect the orthotropic poroelastic system response to seismic waves. The key result is that fracture-influence parameters are multiplied by a factor of (1-B), where 0 {le} B < 1 is Skempton's second coefficient for poroelastic media. Skempton's B coefficient is itself a measurable characteristic of fluid-saturated porous rocks, depending on porosity, solid moduli, and the pore-fluid bulk modulus. For heterogeneous porous media, connections between the present work and earlier related results of Brown and Korringa are also established.

Berryman, J.G.

2010-05-15T23:59:59.000Z

268

Conservative solute approximation to the transport of a remedial reagent in a vertical circulation flow field  

Science Journals Connector (OSTI)

Summary This study presents a novel mathematical model for describing the transport of the remedial reagent in a vertical circulation flow field in an anisotropic aquifer. To develop the mathematical model, the radial and vertical components of the pore water velocity are calculated first by using an analytical solution for steady-state drawdown distribution near a vertical circulation well. Next, the obtained radial and vertical components of the pore water velocity are then incorporated into a three-dimensional axisymmetrical advection–dispersion equation in cylindrical coordinates from which to build the reagent transport equation. The Laplace transform finite difference technique is applied to solve the three-dimensional axisymmetrical advection–dispersion equation with spatial variable-dependent coefficients. The developed mathematical model is used to investigate the effects of various parameters such as hydraulic conductivity anisotropy, longitudinal and transverse dispersivities, the placement of the extraction and injection screened intervals of the vertical circulation well and the injection modes on the transport regime of the remedial reagent. Results show that those parameters have different degrees of impacts on the distribution of the remedial reagent. The mathematical model provides an effective tool for designing and operating an enhanced groundwater remediation in an anisotropic aquifer using the vertical circulation well technology.

Jui-Sheng Chen; Cheng-Shin Jang; Chung-Ting Cheng; Chen-Wuing Liu

2010-01-01T23:59:59.000Z

269

SYSTEM MODELING AND ANALYSIS USING COMMUNICATION CHANNELS  

Science Journals Connector (OSTI)

In this study, we approach systems from an information theoretical perspective. Specifically, we propose a framework to model systems by noisy communication channels and analyze them by this framework whose elements are commonly used analysis tools in ... Keywords: Analysis, Information Theory, Modeling, Systems

Bunyamin Ozaydin; Murat M. Tanik

2011-01-01T23:59:59.000Z

270

Glass fiber channels laser light to robot  

Science Journals Connector (OSTI)

Glass fiber channels laser light to robot ... In a demonstration of the technique, a fiberoptic cable carried a laser beam of more than 10,000 W of peak power—400 W average—from a neodymiumyttrium- aluminum-garnet laser to an industrial robot more than 25 yards away. ...

1983-11-28T23:59:59.000Z

271

Perspective Ion Channels: From Conductance to Structure  

E-Print Network (OSTI)

membrane is an essen- tially insurmountable barrier for the flow of ions; therefore, ion transport is carried out by membrane-embedded specialized proteins in the form of transporters and ion channels a purely electrical concept to a structural dynamics view of ions in- teracting with a membrane protein

Bezanilla, Francisco

272

TRESK potassium channel in human T lymphoblasts  

SciTech Connect

Highlights: • TRESK (KCNK18) mRNA is present in different T lymphoblastic cell lines. • KCNK18 mRNA was not found in resting peripheral blood lymphocytes. • Clinical samples of T lymphoblastic leukemias and lymphomas were positive for TRESK. • TRESK in T lymphoblasts has dual localization, in plasma membrane and intracellular. -- Abstract: TRESK (TWIK-related spinal cord K{sup +}) channel, encoded by KCNK18 gene, belongs to the double-pore domain K{sup +} channel family and in normal conditions is expressed predominantly in the central nervous system. In our previous patch-clamp study on Jurkat T lymphoblasts we have characterized highly selective K{sup +} channel with pharmacological profile identical to TRESK. In the present work, the presence of KCNK18 mRNA was confirmed in T lymphoblastic cell lines (Jurkat, JCaM, H9) but not in resting peripheral blood lymphocytes of healthy donors. Positive immunostaining for TRESK was demonstrated in lymphoblastic cell lines, in germinal centers of non-tumoral lymph nodes, and in clinical samples of T acute lymphoblastic leukemias/lymphomas. Besides detection in the plasma membrane, intracellular TRESK localization was also revealed. Possible involvement of TRESK channel in lymphocyte proliferation and tumorigenesis is discussed.

Sánchez-Miguel, Dénison Selene, E-mail: amurusk@hotmail.com [Center for Biomedical Research, University of Colima, Av. 25 de Julio 965, Villa San Sebastian, C.P. 28045 Colima (Mexico); García-Dolores, Fernando, E-mail: garciaddf@yahoo.com [Department of Pathology, Institute of Forensic Sciences, Av. Niños Héroes 130, Col. Doctores, C.P. 06720 Mexico, DF (Mexico)] [Department of Pathology, Institute of Forensic Sciences, Av. Niños Héroes 130, Col. Doctores, C.P. 06720 Mexico, DF (Mexico); Rosa Flores-Márquez, María, E-mail: mariafo31@yahoo.com.mx [National Medical Center of Occident (CMNO) IMSS, Belisario Dominguez 735, Col. Independencia Oriente, C.P. 44340 Guadalajara, Jalisco (Mexico); Delgado-Enciso, Iván [University of Colima, School of Medicine, Av. Universidad 333, Col. Las Viboras, C.P. 28040 Colima (Mexico)] [University of Colima, School of Medicine, Av. Universidad 333, Col. Las Viboras, C.P. 28040 Colima (Mexico); Pottosin, Igor, E-mail: pottosin@ucol.mx [Center for Biomedical Research, University of Colima, Av. 25 de Julio 965, Villa San Sebastian, C.P. 28045 Colima (Mexico)] [Center for Biomedical Research, University of Colima, Av. 25 de Julio 965, Villa San Sebastian, C.P. 28045 Colima (Mexico); Dobrovinskaya, Oxana, E-mail: oxana@ucol.mx [Center for Biomedical Research, University of Colima, Av. 25 de Julio 965, Villa San Sebastian, C.P. 28045 Colima (Mexico)] [Center for Biomedical Research, University of Colima, Av. 25 de Julio 965, Villa San Sebastian, C.P. 28045 Colima (Mexico)

2013-05-03T23:59:59.000Z

273

Fermi Liquid Instabilities in the Spin Channel  

SciTech Connect

We study the Fermi surface instabilities of the Pomeranchuk type in the spin triplet channel with high orbital partial waves (F{sub l}{sup a} (l > 0)). The ordered phases are classified into two classes, dubbed the {alpha} and {beta}-phases by analogy to the superfluid {sup 3}He-A and B-phases. The Fermi surfaces in the {alpha}-phases exhibit spontaneous anisotropic distortions, while those in the {beta}-phases remain circular or spherical with topologically non-trivial spin configurations in momentum space. In the {alpha}-phase, the Goldstone modes in the density channel exhibit anisotropic overdamping. The Goldstone modes in the spin channel have nearly isotropic underdamped dispersion relation at small propagating wavevectors. Due to the coupling to the Goldstone modes, the spin wave spectrum develops resonance peaks in both the {alpha} and {beta}-phases, which can be detected in inelastic neutron scattering experiments. In the p-wave channel {beta}-phase, a chiral ground state inhomogeneity is spontaneously generated due to a Lifshitz-like instability in the originally nonchiral systems. Possible experiments to detect these phases are discussed.

Wu, Congjun; /Santa Barbara, KITP; Sun, Kai; Fradkin, Eduardo; /Illinois U., Urbana; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

2010-03-16T23:59:59.000Z

274

Nanoscale sensing methodology via functional control of an ion channel-forming peptide, Gramicidin A  

E-Print Network (OSTI)

properties of ion channels by engineering molecularexamples of the engineering of ion channel-based sensors forin re-engineering or synthetic modification of ion channels

Macrae, Michael X.

2011-01-01T23:59:59.000Z

275

FREE CONVECTIVE LAMINAR FLOW WITHIN THE TROMBE WALL CHANNEL  

E-Print Network (OSTI)

LAMINAR FLOW WITHIN THE TROMBE WALL CHANNEL H. Akbarf andLAMINAR FLOW WITHIN THE TROMBE WALL CHANNEL H. Akbari andchannel surfaces of the Trombe wall has been investigated.

Akbari, H.

2011-01-01T23:59:59.000Z

276

Evaluating demand planning strategy in the retail channel  

E-Print Network (OSTI)

In 2007 Dell began selling through the retail channel. Five years later, the retail channel is still in the early stages relative to competitors and is growing rapidly. Short product lifecycles, long lead times and a high ...

Zehavi, Limor (Limor Hadas)

2012-01-01T23:59:59.000Z

277

Quantitative description of steam channels after steam flooding  

Science Journals Connector (OSTI)

Steam channeling is one of the main barriers for EOR after steam flooding. In order to enhance the oil recovery in steam flooded reservoirs, steam channel volumes should be precisely known. In ... methods has bee...

Qiang Zheng; HuiQing Liu; Fang Li; Qing Wang…

2013-05-01T23:59:59.000Z

278

Analysis of global channel costs for the pharmaceutical industry  

E-Print Network (OSTI)

The pharmaceutical industry creates products which often have more than one supply chain channel, defined as a route through the supply chain network from sourcing to the end market. Each channel's specific cost characteristics ...

Rimling, Eric C. (Eric Christopher)

2009-01-01T23:59:59.000Z

279

Minimal Proton Channel Enables H2 Oxidation and Production with...  

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

Minimal Proton Channel Enables H2 Oxidation and Production with a Water-Soluble Nickel-Based Catalyst. Minimal Proton Channel Enables H2 Oxidation and Production with a...

280

One-Channel Audio Source Separation of Convolutive Mixture  

Science Journals Connector (OSTI)

Methods based on one-channel audio source separation are more practical than multi-channel ones in the real world applications. In this paper we proposed a new method to separate audio signals from single conv...

Jalal Taghia; Jalil Taghia

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Roderick MacKinnon and Ion Channels - Potassium Channels and Sodium  

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

Roderick MacKinnon and Ion Channels Roderick MacKinnon and Ion Channels Resources with Additional Information · Patents Roderick MacKinnon Courtesy of The Rockefeller University Roderick MacKinnon, M.D., a visiting researcher at the U.S. Department of Energy's Brookhaven National Laboratory, is a recipient of the 2003 Nobel Prize in Chemistry 'for structural and mechanistic studies of ion channels.' His research explains "how a class of proteins helps to generate nerve impulses - the electrical activity that underlies all movement, sensation, and perhaps even thought. The work leading to the prize was done primarily at the Cornell High Energy Synchrotron Source [CHESS] and the National Synchrotron Light Source [NSLS] at Brookhaven. The proteins, called ion channels, are tiny pores that stud the surface of all of our cells. These channels allow the passage of potassium, calcium, sodium, and chloride molecules called ions. Rapid-fire opening and closing of these channels releases ions, moving electrical impulses from the brain in a wave to their destination in the body."1

282

Developement of 3D Vertically Integrated Pattern Recognition Associative Memory (VIPRAM)  

SciTech Connect

Many next-generation physics experiments will be characterized by the collection of large quantities of data, taken in rapid succession, from which scientists will have to unravel the underlying physical processes. In most cases, large backgrounds will overwhelm the physics signal. Since the quantity of data that can be stored for later analysis is limited, real-time event selection is imperative to retain the interesting events while rejecting the background. Scaling of current technologies is unlikely to satisfy the scientific needs of future projects, so investments in transformational new technologies need to be made. For example, future particle physics experiments looking for rare processes will have to address the demanding challenges of fast pattern recognition in triggering as detector hit density becomes significantly higher due to the high luminosity required to produce the rare processes. In this proposal, we intend to develop hardware-based technology that significantly advances the state-of-the-art for fast pattern recognition within and outside HEP using the 3D vertical integration technology that has emerged recently in industry. The ultimate physics reach of the LHC experiments will crucially depend on the tracking trigger's ability to help discriminate between interesting rare events and the background. Hardware-based pattern recognition for fast triggering on particle tracks has been successfully used in high-energy physics experiments for some time. The CDF Silicon Vertex Trigger (SVT) at the Fermilab Tevatron is an excellent example. The method used there, developed in the 1990's, is based on algorithms that use a massively parallel associative memory architecture to identify patterns efficiently at high speed. However, due to much higher occupancy and event rates at the LHC, and the fact that the LHC detectors have a much larger number of channels in their tracking detectors, there is an enormous challenge in implementing pattern recognition for a track trigger, requiring about three orders of magnitude more associative memory patterns than what was used in the original CDF SVT. Significant improvement in the architecture of associative memory structures is needed to run fast pattern recognition algorithms of this scale. We are proposing the development of 3D integrated circuit technology as a way to implement new associative memory structures for fast pattern recognition applications. Adding a 'third' dimension to the signal processing chain, as compared to the two-dimensional nature of printed circuit boards, Field Programmable Gate Arrays (FPGAs), etc., opens up the possibility for new architectures that could dramatically enhance pattern recognition capability. We are currently performing preliminary design work to demonstrate the feasibility of this approach. In this proposal, we seek to develop the design and perform the ASIC engineering necessary to realize a prototype device. While our focus here is on the Energy Frontier (e.g. the LHC), the approach may have applications in experiments in the Intensity Frontier and the Cosmic Frontier as well as other scientific and medical projects. In fact, the technique that we are proposing is very generic and could have wide applications far beyond track trigger, both within and outside HEP.

Deputch, G.; Hoff, J.; Lipton, R.; Liu, T.; Olsen, J.; Ramberg, E.; Wu, Jin-Yuan; Yarema, R.; /Fermilab; Shochet, M.; Tang, F.; /Chicago U.; Demarteau, M.; /Argonne /INFN, Padova

2011-04-13T23:59:59.000Z

283

Canyon and channel networks of Peru-Chile fore arc at Arica Bight  

SciTech Connect

Canyons and channels of the Peru-Chile fore arc between 17{degree}30'S to 19{degree}30'S form a complex, integrated network revealed in SeaMARC II side-scan mosaics. The largest canyon, incised 200-600 m, is bordered by a series of sidewall slumps, producing a sinuosity that mimics subaerial meanders. The canyon courses across the Arequipa fore-arc basin floor, across a structural high and onto the middle trench slope to about 4,000 m where it disappears into a background of complex small-scale structures, From 500-2,500 m depth the canyon strikes north-south oblique to the regional slope. At 2,500 m, it abruptly turns to the southwest toward the trench axis. At this elbow, a second canyon heads on the midslope and also trends north-south until 3,500 m, where it too abruptly changes to a southwest course. A history of stream piracy analogous to subaerial systems is implied in this geometry. Tributaries join this main canyon from the landward side, forming a dendritic pattern. These channels have levees which are linked by submarine crevasse splays to sediment waves on the Arequipa basin floor. The orientation of the waves is reminiscent of bow waves from a passing ship, oblique to channel and pointing downslope, and may provide an indication of the vertical extent of passing turbidity currents. Sediments are dominantly olive gray, hemipelagic silts with sands present only immediately adjacent to the canyons. Boulders of mudstone line portions of the canyon floor. Sands are absent from the lowermost slope and trench axis, as are any indications of submarine fans. Sands may be rare in this system, with those that are present kneaded into the active margin system along the lower trench slope.

Coulbourn, W.T. (Hawaii Institute of Geophysics, Honolulu (USA))

1990-05-01T23:59:59.000Z

284

Dynamical coupled-channels: the key to understanding resonances  

E-Print Network (OSTI)

Recent developments on a dynamical coupled-channels model of hadronic and electromagnetic production of nucleon resonances are summarized.

B. Julia-Diaz

2007-12-01T23:59:59.000Z

285

Channeling Radiation from Relativistic Positrons in LiF  

Science Journals Connector (OSTI)

Unusual features of radiation spectra from relativistic positrons channeled in the ionic crystal LiF have been observed.

B. L. Berman; S. Datz; R. W. Fearick; J. O. Kephart; R. H. Pantell; H. Park; R. L. Swent

1982-08-16T23:59:59.000Z

286

Chaperone function of the botulinum neurotoxin protein translocating channel  

E-Print Network (OSTI)

channel blockers like memantine in the treatment of acutechannel blockers like memantine in the treatment of acute

Fischer, Audrey

2008-01-01T23:59:59.000Z

287

An Information Theoretic Analysis on Indoor PLC Channel Characterizations  

E-Print Network (OSTI)

An Information Theoretic Analysis on Indoor PLC Channel Characterizations Hao LIN , Aawatif MENOUNI. But the development of Power Line Communications (PLC) highly depends on the knowledge of the channel characterizations. For this reason, a large number of attentions have been payed on the PLC channel analysis using

Gesbert, David

288

"Measurement of Cell Movement in Microfluidic Channels" Kevin Okiah  

E-Print Network (OSTI)

"Measurement of Cell Movement in Microfluidic Channels" Kevin Okiah Faculty Mentor: Dr. Christopher-throughput sensors that use an array of detectors to measure cells in microfluidics channels. These miniature the production of microfluidic channels and their union with the sensing surface of the webcam as well as micro

Mountziaris, T. J.

289

Theory of Molecular Machines. I. Channel Capacity of Molecular Machines  

E-Print Network (OSTI)

Theory of Molecular Machines. I. Channel Capacity of Molecular Machines running title: Channel Capacity of Molecular Machines Thomas D. Schneider version = 5.76 of ccmm.tex 2004 Feb 3 Version 5.67 was submitted 1990 December 5 Schneider, T. D. (1991). Theory of molecular machines. I. Channel capacity

Schneider, Thomas D.

290

Microwave Radiometer – 3 Channel (MWR3C) Handbook  

SciTech Connect

The microwave radiometer 3-channel (MWR3C) provides time-series measurements of brightness temperatures from three channels centered at 23.834, 30, and 89 GHz. These three channels are sensitive to the presence of liquid water and precipitable water vapor.

Cadeddu, MP

2012-05-04T23:59:59.000Z

291

Code design for erasure channels with limited or noisy feedback  

E-Print Network (OSTI)

is the channel erasure probability. The condition for successful decoding is given by, xl channel threshold thresh is the maximum channel erasure probability, such that the probability of error tends to zero under message passing...

Nagasubramanian, Karthik

2009-05-15T23:59:59.000Z

292

Code design for erasure channels with limited or noisy feedback  

E-Print Network (OSTI)

is the channel erasure probability. The condition for successful decoding is given by, xl channel threshold thresh is the maximum channel erasure probability, such that the probability of error tends to zero under message passing...

Nagasubramanian, Karthik

2008-10-10T23:59:59.000Z

293

Renewable Energy Scheduling for Fading Channels with Maximum Power Constraint  

E-Print Network (OSTI)

Renewable Energy Scheduling for Fading Channels with Maximum Power Constraint Zhe Wang Electrical--In this paper, we develop efficient algorithm to obtain the optimal energy schedule for fading channel with energy harvesting. We assume that the side information of both the channel states and energy harvesting

Greenberg, Albert

294

Memory Effects in Quantum Channel Discrimination Giulio Chiribella,1  

E-Print Network (OSTI)

Memory Effects in Quantum Channel Discrimination Giulio Chiribella,1 Giacomo M. D'Ariano,1 quantum-memory assisted protocols for discriminating quantum channels. We show that for optimal discrimination of memory channels, memory assisted protocols are needed. This leads to a new notion of distance

D'Ariano, Giacomo Mauro

295

Data/model integration for vertical mixing in the stable Arctic boundary layer  

SciTech Connect

This is the final report of a short Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). Data on atmospheric trace constituents and the vertical structure of stratus clouds from a 1996 expedition to the central Arctic reveal mechanisms of vertical mixing that have not been observed in mid-latitudes. Time series of the altitude and thickness of summer arctic stratus have been observed using an elastic backscatter lidar aboard an icebreaker. With the ship moored to the pack ice during 14 data collection stations and the lidar staring vertically, the time series represent advected cloud fields. The lidar data reveal a significant amount of vertical undulation in the clouds, strongly suggestive of traveling waves in the buoyantly damped atmosphere that predominates in the high Arctic. Concurrent observations of trace gases associated with the natural sulfur cycle (dimethyl sulfide, SO{sub 2}, NH{sub 3}, H{sub 2}O{sub 2}) and aerosols show evidence of vertical mixing events that coincide with a characteristic signature in the cloud field that may be called dropout or lift out. A segment of a cloud deck appears to be relocated from the otherwise quasicontinuous layer to another altitude a few hundred meters lower or higher. Atmospheric models have been applied to identify the mechanism that cause the dropout phenomenon and connect it dynamically to the surface layer mixing.

Barr, S.; ReVelle, D.O.; Kao, C.Y.J.; Bigg, E.K.

1998-12-31T23:59:59.000Z

296

Gauge-invariant three-boson vertices and their Ward identities in the standard model  

Science Journals Connector (OSTI)

In the context of the standard model we extend the S-matrix pinch technique for nonconserved currents to the case of three-boson vertices. We outline in detail how effective gauge-invariant three-boson vertices can be constructed, with all three incoming momenta off shell. Explicit closed expressions for the vertices ?W-W+, ZW-W+, and ?W-W+ are reported. The three-boson vertices so constructed satisfy naive QED-like Ward identities which relate them to the gauge-invariant gauge boson self-energies previously constructed by the same method. The derivation of the aforementioned Ward identities relies on the sole requirement of complete gauge invariance of the S-matrix element considered; in particular, no knowledge of the explicit closed form of the three-boson vertices involved is necessary. The validity of one of these Ward identities is demonstrated explicitly, through a detailed diagrammatic one-loop analysis, in the context of three different gauges.

Joannis Papavassiliou and Kostas Philippides

1995-08-15T23:59:59.000Z

297

Channel Access Client Toolbox for Matlab  

SciTech Connect

This paper reports on MATLAB Channel Access (MCA) Toolbox--MATLAB [1] interface to EPICS Channel Access (CA) client library. We are developing the toolbox for SPEAR3 accelerator controls, but it is of general use for accelerator and experimental physics applications programming. It is packaged as a MATLAB toolbox to allow easy development of complex CA client applications entirely in MATLAB. The benefits include: the ability to calculate and display parameters that use EPICS process variables as inputs, availability of MATLAB graphics tools for user interface design, and integration with the MATLAB-based accelerator modeling software--Accelerator Toolbox [2-4]. Another purpose of this paper is to propose a feasible path to a synergy between accelerator control systems and accelerator simulation codes, the idea known as on-line accelerator model.

Terebilo, Andrei

2002-08-07T23:59:59.000Z

298

Multi-Summer Climatology of Cumuli at SGP site: Vertical Structure  

SciTech Connect

We perform a case study for estimating the impact of the vertical distribution of cloud fraction on the normalized cloud radiative forcing (CRF) using a decade-long (2000-2009) high resolution dataset of cloud macrophysical and radiative properties. This dataset is developed for fair-weather cumuli (FWC) observed at the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site. The design of the case study reduces effects associated with non-cloud factors, such as the diurnal changes of aerosol loading and solar zenith angle. The results of the case study suggest that the impact of the vertical cloud structure can be substantial. Therefore, taking into account the vertical distribution of clouds would be beneficial for more comprehensive parameterizations aimed to portray the complex interactions between clouds and radiation more accurately

Kassianov, Evgueni I.; Berg, Larry K.

2011-10-01T23:59:59.000Z

299

Strong Contributions from Vertical Triads to Helix-Partner Preferences in Parallel Coiled Coils  

Science Journals Connector (OSTI)

We have previously analyzed vertical interactions in antiparallel coiled coils and found that one type of triad constellation (a?–a–a?) exerts a strong effect on pairing preferences, while the other type of triad (d?–d–d?) has relatively little impact on pairing tendencies. ... To isolate the energetic significance of changes in the d?–a–d? vertical triads for d? = Leu vs Ile, we consider ?GCC values for a set of four mutants of CT-C?SG, involving two different residues at position a and a constant residue at a?. ... The resulting ?G value, which we term the “discrimination energy” (DE), indicates the extent to which one set of vertical triads is favored over the other. ...

Jay D. Steinkruger; Gail J. Bartlett; Derek N. Woolfson; Samuel H. Gellman

2012-09-13T23:59:59.000Z

300

Gauge-independent transverse and longitudinal self-energies and vertices via the pinch technique  

Science Journals Connector (OSTI)

In the context of the standard model we show how to apply the pinch technique to four-fermion amplitudes with nonconserved external charged currents, in order to construct to one-loop order gauge-independent self-energies and vertices. We discuss the technical difficulties arising due to the presence of longitudinal contributions from the W and Goldstone boson (?) propagators, and derive gauge-independent WW, ?W, and ?? effective self-energies and vertices. The quantities so constructed satisfy a set of Ward identities, whose validity enforces the gauge invariance of the physical amplitude considered; their derivation does not require knowledge of the explicit closed form of the gauge-independent self-energies and vertices. Use of these Ward identities enables the decomposition of the amplitude in manifestly gauge-independent transverse and longitudinal structures with distinct kinematic properties. Explicit one-loop calculations are carried out, and several applications of the results are briefly discussed.

Joannis Papavassiliou

1994-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Global buckling of pipelines in the vertical plane with a soft seabed  

Science Journals Connector (OSTI)

Offshore pipelines are usually buried to avoid damage from fishing activities and to provide thermal insulation. Provided that the buried pipelines are sufficiently confined in the lateral direction by the passive resistance of the trench walls, they may be subject to vertical buckling caused by a rise in temperature. Vertical buckling is usually called upheaval buckling because the heated pipeline is assumed to move upwards conventionally. However, the seabed may be very soft, especially where a pockmark or abyssal ooze appears. Consequently, under thermal compressive force, the pipeline may buckle downward and penetrate into the seabed because the downward soil resistance is small. In this study, we extended an analytical solution for vertical pipeline buckling on a rigid seabed to a soft seabed, and the effects of soil resistance on pipeline stability, buckling mode and amplitude are illustrated and analyzed.

Lizhong Wang; Ruowei Shi; Feng Yuan; Zhen Guo; Luqing Yu

2011-01-01T23:59:59.000Z

302

Power performance of canted blades for a vertical axis wind turbine  

Science Journals Connector (OSTI)

Small scale vertical axis wind turbines have a number of advantages for deployment in an urban environment but are subject to highly varying thrust and radial aerodynamic forces. Helical blade shapes for vertical axis wind turbines can reduce load fluctuations during turbine operation; however a helix has complicated three-dimensional geometry that can be difficult to manufacture resulting in expensive blades. A new blade configuration based on twisted straight blades that are mounted at an angle to the vertical a cant has been developed and tested in a wind tunnel in a number of different configurations and conditions. They offer the benefits of distributing the fluctuating aerodynamic loads but incorporate a linear axis so that they can be manufactured at a comparable cost to simple straight blades. The power performance data from the tunnel testing show that canted blades have comparable power output to similar straight blades and that aerodynamic fences can be used to improve power performance.

Shawn Armstrong; Stephen Tullis

2011-01-01T23:59:59.000Z

303

Concept of spinsonde for multi-cycle measurement of vertical wind profile of tropical cyclones  

E-Print Network (OSTI)

Tropical cyclones and cyclogenesis are active areas of research. Chute-operated dropsondes jointly developed by NASA and NCAR are capable of acquiring high resolution vertical wind profile of tropical cyclones. This paper proposes a chute-free vertical retardation technique (termed as spinsonde) that can accurately measure vertical wind profile. Unlike the expendable dropsondes, the spinsonde allows multi-cycle measurement to be performed within a single flight. Proof of principle is demonstrated using a simulation software and results indicate that the GPS ground speed correlates with the wind speeds to within +/-5 km/h. This technique reduces flying weight and increases payload capacity by eliminating bulky chutes. Maximum cruising speed (Vh) achieved by the spinsonde UAV is 372 km/h.

Poh, Chung-How

2014-01-01T23:59:59.000Z

304

Development and Test Plans for a small Vertical Axis Turbine Designed and  

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

Development and Test Plans for a small Vertical Axis Turbine Designed and Development and Test Plans for a small Vertical Axis Turbine Designed and Built by the Russian State Rocket Center under Berkeley Lab auspices Speaker(s): Anthony Radspieler Jr. Glen Dahlbacka Joseph Rasson Date: March 4, 2010 - 12:00pm Location: 90-3122 Berkeley Lab Engineering Division teamed with Empire Magnetics, Rohnert Park and the Makeyev State Rocket Center under a DOE NNSA non-proliferation project to develop and test a series of small wind turbines of vertical axis design. Over the years, about 100 Russian scientists and engineers worked on the project and the hydrodynamic, aerodynamic and mechanical test facilities of the SRC were used. The objective was to create a highly manufacturable Darieus unit with a modest Tip Speed Ratio (quiet and low

305

Multiple thresholds in a model system of noisy ion channels  

Science Journals Connector (OSTI)

Voltage-activated ion channels vary randomly between open and closed states, influenced by the membrane potential and other factors. Signal transduction is enhanced by noise in a simple ion channel model. The enhancement occurs in a finite range of signals; the range can be extended using populations of channels. The range increases more rapidly in multiple-threshold channel populations than in single-threshold populations. The diversity of ion channels may thus be present as a strategy to reduce the metabolic costs of handling a broad class of electrochemical signals.

Michael J. Barber and Manfred L. Ristig

2006-10-19T23:59:59.000Z

306

Energy conversion device with support member having pore channels  

DOE Patents (OSTI)

Energy devices such as energy conversion devices and energy storage devices and methods for the manufacture of such devices. The devices include a support member having an array of pore channels having a small average pore channel diameter and having a pore channel length. Material layers that may include energy conversion materials and conductive materials are coaxially disposed within the pore channels to form material rods having a relatively small cross-section and a relatively long length. By varying the structure of the materials in the pore channels, various energy devices can be fabricated, such as photovoltaic (PV) devices, radiation detectors, capacitors, batteries and the like.

Routkevitch, Dmitri [Longmont, CO; Wind, Rikard A [Johnstown, CO

2014-01-07T23:59:59.000Z

307

Relativistic laser channeling in plasmas for fast ignition  

Science Journals Connector (OSTI)

We report an experimental observation suggesting plasma channel formation by focusing a relativistic laser pulse into a long-scale-length preformed plasma. The channel direction coincides with the laser axis. Laser light transmittance measurement indicates laser channeling into the high-density plasma with relativistic self-focusing. A three-dimensional particle-in-cell simulation reproduces the plasma channel and reveals that the collimated hot-electron beam is generated along the laser axis in the laser channeling. These findings hold the promising possibility of fast heating a dense fuel plasma with a relativistic laser pulse.

A. L. Lei, A. Pukhov, R. Kodama, T. Yabuuchi, K. Adumi, K. Endo, R. R. Freeman, H. Habara, Y. Kitagawa, K. Kondo, G. R. Kumar, T. Matsuoka, K. Mima, H. Nagatomo, T. Norimatsu, O. Shorokhov, R. Snavely, X. Q. Yang, J. Zheng, and K. A. Tanaka

2007-12-18T23:59:59.000Z

308

WAVE-VORTEX MODE COUPLING IN ASTROPHYSICAL ACCRETION DISKS UNDER COMBINED RADIAL AND VERTICAL STRATIFICATION  

SciTech Connect

We examine accretion disk flow under combined radial and vertical stratification utilizing a local Cartesian (or ''shearing box'') approximation. We investigate both axisymmetric and nonaxisymmetric disturbances with the Boussinesq approximation. Under axisymmetric disturbances, a new dispersion relation is derived. It reduces to the Solberg-Hoieland criterion in the case without vertical stratification. It shows that, asymptotically, stable radial and vertical stratification cannot induce any linear instability; Keplerian flow is accordingly stable. Previous investigations strongly suggest that the so-called bypass concept of turbulence (i.e., that fine-tuned disturbances of any inviscid smooth shear flow can reach arbitrarily large transient growth) can also be applied to Keplerian disks. We present an analysis of this process for three-dimensional plane-wave disturbances comoving with the shear flow of a general rotating shear flow under combined stable radial and vertical rotation. We demonstrate that large transient growth occurs for K{sub 2}/k{sub 1} >> 1 and k{sub 3} = 0 or k{sub 1} {approx} k{sub 3}, where k{sub 1}, K{sub 2}, and k{sub 3} are the azimuthal, radial, and vertical components of the initial wave vector, respectively. By using a generalized ''wave-vortex'' decomposition of the disturbance, we show that the large transient energy growth in a Keplerian disk is mainly generated by the transient dynamics of the vortex mode. The analysis of the power spectrum of total (kinetic+potential) energy in the azimuthal or vertical directions shows that the contribution coming from the vortex mode is dominant at large scales, while the contribution coming from the wave mode is important at small scales. These findings may be confirmed by appropriate numerical simulations in the high Reynolds number regime.

Salhi, A. [Departement de Physique, Faculte des Sciences de Tunis, 1060 Tunis (Tunisia); Lehner, T. [LUTH, UMR 8102 CNRS, Observatoire de Paris-Meudon, 5 place de Janssen, F-92195 Meudon (France); Godeferd, F.; Cambon, C. [Laboratoire de Mecanique des Fluides et d'Acoustique, Ecole Centrale de Lyon, Universite de Lyon, UMR 5509, CNRS, INSA, UCB, F-69134 Ecully Cedex (France)

2013-07-10T23:59:59.000Z

309

Vertical Variability of Aerosols and Water Vapor Over the Southern Great Plains  

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

Vertical Variability of Aerosols and Water Vapor Vertical Variability of Aerosols and Water Vapor Over the Southern Great Plains R. A. Ferrare National Aeronautics and Space Administration Langley Research Center Hampton, Virginia D. D. Turner Pacific Northwest National Laboratory Richland, Washington M. Clayton and V. Brackett Science Applications International Corporation National Aeronautics and Space Administration Langley Research Center Hampton, Virginia T. P. Tooman and J. E. M. Goldsmith Sandia National Laboratories Livermore, California J. A. Ogren National Oceanic and Atmospheric Administration Climate Monitoring and Diagnostics Laboratory Boulder, Colorado E. Andrews Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder, Colorado

310

1D-1D tunneling between vertically coupled GaAs/AlGaAs quantum wires.  

SciTech Connect

We report low-dimensional transport and tunneling in an independently contacted vertically coupled quantum wire system, with a 7.5 nm barrier between the wires. The derivative of the linear conductance shows evidence for both single wire occupation and coupling between the wires. This provides a map of the subband occupation that illustrates the control that we have over the vertically coupled double quantum wires. Preliminary tunneling results indicate a sharp 1D-1D peak in conjunction with a broad 2D-2D background signal. This 1D-1D peak is sensitively dependent on the top and bottom split gate voltage.

Seamons, John Andrew; Lilly, Michael Patrick; Reno, John Louis; Bielejec, Edward Salvador

2004-07-01T23:59:59.000Z

311

Can the vertical motions in the eyewall of tropical cyclones support persistent UAV flight?  

E-Print Network (OSTI)

Powered flights in the form of manned or unmanned aerial vehicles (UAVs) have been flying into tropical cyclones to obtain vital atmospheric measurements with flight duration typically lasting between 12 and 36 hours. Convective vertical motion properties of tropical cyclones have previously been studied. This work investigates the possibility to achieve persistent flight by harnessing the generally pervasive updrafts in the eyewall of tropical cyclones. A sailplane UAV capable of vertical take-off and landing (VTOL) is proposed and its flight characteristics simulated. Results suggest that the concept of persistent flight within the eyewall is promising and may be extendable to the rainband regions.

Poh, Chung-Kiak

2014-01-01T23:59:59.000Z

312

Beam steering via resonance detuning in coherently coupled vertical cavity laser arrays  

SciTech Connect

Coherently coupled vertical-cavity surface-emitting laser arrays offer unique advantages for nonmechanical beam steering applications. We have applied dynamic coupled mode theory to show that the observed temporal phase shift between vertical-cavity surface-emitting array elements is caused by the detuning of their resonant wavelengths. Hence, a complete theoretical connection between the differential current injection into array elements and the beam steering direction has been established. It is found to be a fundamentally unique beam-steering mechanism with distinct advantages in efficiency, compactness, speed, and phase-sensitivity to current.

Johnson, Matthew T., E-mail: matthew.johnson.9@us.af.mil; Siriani, Dominic F.; Peun Tan, Meng; Choquette, Kent D. [Department of Electrical and Computer Engineering University of Illinois, Urbana, Illinois 61820 (United States)] [Department of Electrical and Computer Engineering University of Illinois, Urbana, Illinois 61820 (United States)

2013-11-11T23:59:59.000Z

313

Vertical poloidal asymmetries of low-Z element radiation in the PDX tokamak  

SciTech Connect

Vertical poloidal asymmetries of hydrogen isotopes and low-Z impurity radiation in the PDX tokamak may be caused by poloidally asymmetric sources of these elements at gas inlet valves, limiters or vacuum vessel walls, asymmetric magnetic field geometry in the region beyond the plasma boundary, or by ion curvature drifts. Low ionization states of carbon (C II- C IV) are more easily influenced by edge conditions than is CV. Vertical poloidal asymmetries of CV are correlated with the direction of the toroidal field. The magnitude of the asymmetry agrees with the predictions of a quasifluid neoclassical model. Experimental data and numerical simulations are presented to investigate different models of impurity poloidal asymmetries.

Brau, K.; Suckewer, S.; Wong, S.K.

1983-06-01T23:59:59.000Z

314

NSAIDs acutely inhibit TRPC channels in freshly isolated rat glomeruli  

SciTech Connect

Highlights: {yields} We have established a unique approach to search for physiologically relevant mechanisms of TRPC channels in podocytes. {yields} This study describes endogenous TRPC channels in the isolated decapsulated glomeruli preparation. {yields} We report for the first time that NSAIDs inhibit TRPC channels in podocytes. -- Abstract: Using a novel approach for analysis of TRPC channel activity, we report here that NSAIDs are involved into regulation of TRPC channels in the podocytes of the freshly isolated decapsulated glomeruli. Fluorescence and electron microscopy techniques confirmed the integrity of podocytes in the glomeruli. Western blotting showed that TRPC1, 3 and 6 are highly expressed in the glomeruli. Single-channel patch clamp analysis revealed cation currents with distinct TRPC properties. This is the first report describing single TRPC-like currents in glomerular podocytes. Furthermore, our data provide a novel mechanism of NSAIDs regulation of TRPC channels, which might be implicated in maintaining the glomerular filtration barrier.

Ilatovskaya, Daria V. [Department of Physiology, Medical College of Wisconsin, Milwaukee, WI (United States) [Department of Physiology, Medical College of Wisconsin, Milwaukee, WI (United States); Institute of Cytology RAS, St. Petersburg (Russian Federation); Levchenko, Vladislav; Ryan, Robert P.; Cowley, Allen W. [Department of Physiology, Medical College of Wisconsin, Milwaukee, WI (United States)] [Department of Physiology, Medical College of Wisconsin, Milwaukee, WI (United States); Staruschenko, Alexander, E-mail: Staruschenko@mcw.edu [Department of Physiology, Medical College of Wisconsin, Milwaukee, WI (United States)] [Department of Physiology, Medical College of Wisconsin, Milwaukee, WI (United States)

2011-05-06T23:59:59.000Z

315

E-Print Network 3.0 - atp-sensitive potassium channels Sample...  

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

channels Search Powered by Explorit Topic List Advanced Search Sample search results for: atp-sensitive potassium channels...

316

E-Print Network 3.0 - atp-sensitive potassium channel Sample...  

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

channel Search Powered by Explorit Topic List Advanced Search Sample search results for: atp-sensitive potassium channel...

317

Evolution of vertical drafts and cloud-to-ground lightning within the convective region of a mesoscale convective complex  

E-Print Network (OSTI)

to ground in every 10 minute dme interval from 0600-1200 UTC for the 4 June 1985 MCC 43 24 Vertical profile of area-averaged vertical velocity for (a) west lobe froin 0905-1042 UTC, (b) east lobe from 0914-0952 UTC, and (c) east lobe from 1002-1042 UTC.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 25 Vertical profile of variance of the vertical velocity for (a) west lobe from 0905-1042 UTC, (b) east lobe from 0914-0952 UTC, and (c) east lobe froin 1002-1042 UTC...

Saul, Scott Henry

2012-06-07T23:59:59.000Z

318

Multi-Body Unsteady Aerodynamics in 2D Applied to aVertical-Axis Wind Turbine Using a Vortex Method.  

E-Print Network (OSTI)

?? Vertical axis wind turbines (VAWT) have many advantages over traditional Horizontalaxis wind turbines (HAWT).One of the more severe problem of VAWTs are the complicated… (more)

Österberg, David

2010-01-01T23:59:59.000Z

319

Low threshold vertical cavity surface emitting lasers integrated onto Si-CMOS ICs using novel hybrid assembly techniques  

E-Print Network (OSTI)

A new heterogeneous integration technique has been developed and demonstrated to integrate vertical cavity surface emitting lasers (VCSELs) on silicon CMOS integrated circuits for optical interconnect applications. Individual ...

Perkins, James Michael, 1978-

2007-01-01T23:59:59.000Z

320

Identification and control of plasma vertical position using neural network in Damavand tokamak  

SciTech Connect

In this work, a nonlinear model is introduced to determine the vertical position of the plasma column in Damavand tokamak. Using this model as a simulator, a nonlinear neural network controller has been designed. In the first stage, the electronic drive and sensory circuits of Damavand tokamak are modified. These circuits can control the vertical position of the plasma column inside the vacuum vessel. Since the vertical position of plasma is an unstable parameter, a direct closed loop system identification algorithm is performed. In the second stage, a nonlinear model is identified for plasma vertical position, based on the multilayer perceptron (MLP) neural network (NN) structure. Estimation of simulator parameters has been performed by back-propagation error algorithm using Levenberg-Marquardt gradient descent optimization technique. The model is verified through simulation of the whole closed loop system using both simulator and actual plant in similar conditions. As the final stage, a MLP neural network controller is designed for simulator model. In the last step, online training is performed to tune the controller parameters. Simulation results justify using of the NN controller for the actual plant.

Rasouli, H. [School of Plasma Physics and Nuclear Fusion, Institute of Nuclear Science and Technology, AEOI, P.O. Box 14155-1339, Tehran (Iran, Islamic Republic of); Advanced Process Automation and Control (APAC) Research Group, Faculty of Electrical Engineering, K.N. Toosi University of Technology, P.O. Box 16315-1355, Tehran (Iran, Islamic Republic of); Rasouli, C.; Koohi, A. [School of Plasma Physics and Nuclear Fusion, Institute of Nuclear Science and Technology, AEOI, P.O. Box 14155-1339, Tehran (Iran, Islamic Republic of)

2013-02-15T23:59:59.000Z

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


321

Page 1 of 21 Vertical integration in a growing industry: security of supply  

E-Print Network (OSTI)

is to secure supply and mitigate risks of price volatility. Oil and gas firms move upstream to enhance securityPage 1 of 21 Vertical integration in a growing industry: security of supply and market access of the industry boundaries, (ii) security of supply and (iii) access to market. The permeability of industry

Aickelin, Uwe

322

UNIVERSITY OF CALIFORNIA, Effects of Vertically-Resolved Solar Heating, Snow Aging, and Black  

E-Print Network (OSTI)

UNIVERSITY OF CALIFORNIA, IRVINE Effects of Vertically-Resolved Solar Heating, Snow Aging formats: Committee Chair University of California, Irvine 2007 ii #12;To my parents, John and Cindy. iii, albedo, snow grain size, and absorbing impurities. . 8 2.1 Solar absorption profiles prescribed by CLM

Zender, Charles

323

Vertical silicon nanowires as a universal platform for delivering biomolecules into living cells  

E-Print Network (OSTI)

Vertical silicon nanowires as a universal platform for delivering biomolecules into living cells Gyeong Yanga,b,1 , and Hongkun Parka,c,1 a Department of Chemistry and Chemical Biology, Harvard platform for introducing a diverse range of bio- molecules into living cells in high-throughput could

Heller, Eric

324

A method for calculating active feedback system to control vertical position of plasma in a tokamak  

Science Journals Connector (OSTI)

In designing tokamaks, the maintenance of vertical stability of plasma is one of the most important problems. For this purpose systems of passive and active feedbacks are applied. The role of passive system consisting of a vacuum vessel and passive stabilizer ...

Nizami Gasilov

2006-08-01T23:59:59.000Z

325

Anisotropic inversion of refracted waves in vertical cable data in the presence of dip  

E-Print Network (OSTI)

the anisotropic parameters of these shales in situ. In these studies, seismic lines were laid out parallelAnisotropic inversion of refracted waves in vertical cable data in the presence of dip Hejie Wang1 isotropic and anisotropic media. Two sets of transversely isotropic models are used to analyse the azimuthal

Edinburgh, University of

326

Growth Mechanisms of Vertically-aligned Carbon, Boron Nitride, and Zinc Oxide Nanotubes  

SciTech Connect

Nanotubes are one-dimensional nanomaterials with all atoms located near the surface. This article provides a brief review on the possible growth mechanisms of a series of inorganic nanotubes, in particular, vertically-aligned (VA) carbon nanotubes (CNTs), boron nitride nanotubes (BNNTs), and ZnO nanotubes (ZnO NTs).

Yap, Yoke Khin [Department of Physics, Michigan Technological University, 118 Fisher Hall, 1400 Townsend Drive, Houghton, MI 49931 (United States)

2009-07-07T23:59:59.000Z

327

Bond Graph Model of a Vertical U-Tube Steam Condenser Coupled with a Heat Exchanger  

E-Print Network (OSTI)

level. Steam condensers are integral part of any nuclear and thermal power plant utilising steam A simulation model for a vertical U-tube steam condenser in which the condensate is stored at the bottom well and thus the bottom well acts as a heat exchanger. The storage of hydraulic and thermal energies

Paris-Sud XI, Université de

328

COMMUNICATIONS Polarization-resolved linewidth-power product of a vertical-cavity  

E-Print Network (OSTI)

when the lasing mode passes through threshold, and ii that the polarization fluctuations in a VCSEL Institute of Physics. DOI: 10.1063/1.1352673 The vertical-cavity semiconductor laser VCSEL is not a true c is the cavity loss rate, i.e., the sum of the mirror loss rate m and the internal loss rate i , h

Exter, Martin van

329

A Simplified Procedure for Sizing Vertical Ground Coupled Heat Pump Heat Exchangers for Residences in Texas  

E-Print Network (OSTI)

A simplified technique for the sizing of vertical U-tube ground coupled heat pump (GCHP) heat exchangers for Texas climates was developed utilizing a transient simulation model of a ground coupled heat pump and weather and soil data for Texas...

O'Neal, D. L.; Gonzalez, J. A.; Aldred, W.

1994-01-01T23:59:59.000Z

330

Compact fluorescent lamp using horizontal and vertical insulating septums and convective venting geometry  

DOE Patents (OSTI)

A novel design is described for a compact fluorescent lamp, including a lamp geometry which will increase light output and efficacy of the lamp in a base down operating position by providing horizontal and vertical insulating septums positioned in the ballast compartment of the lamp to provide a cooler coldspot. Selective convective venting provides additional cooling of the ballast compartment. 9 figs.

Siminovitch, M.

1998-02-10T23:59:59.000Z

331

On the Aerodynamic Performance of a Class of Vertical Shaft Windmills  

Science Journals Connector (OSTI)

...1976 research-article On the Aerodynamic Performance of a Class of Vertical Shaft Windmills P. N. Shankar A theory is presented...speed ratios corresponding to the peak power coefficient and greater. Finally, when compared with the available experimental data...

1976-01-01T23:59:59.000Z

332

Role of algal aggregation in vertical carbon export during SOIREE and in other low biomass environments  

E-Print Network (OSTI)

Role of algal aggregation in vertical carbon export during SOIREE and in other low biomass induced an increase in phytoplankton biomass, but do not necessarily trigger increases in carbon export particles via coagulation. We demonstrate that in low biomass regions, where concentrations do not reach

Jackson, George

333

Analysis of wellbore instability in vertical, directional, and horizontal wells using field data  

E-Print Network (OSTI)

Analysis of wellbore instability in vertical, directional, and horizontal wells using field data M.A-mail addresses: mamuddin@kfupm.edu.sa (M.A. Mohiuddin), aazeez@kfupm.edu.sa (A. Abdulraheem). 0920-4105/$ - see. Mohiuddin, K. Khan, A. Abdulraheem , A. Al-Majed, M.R. Awal Center for Petroleum and Minerals, Research

Al-Majed, Abdulaziz Abdullah

334

Production of vertical arrays of small diameter single-walled carbon nanotubes  

DOE Patents (OSTI)

A hot filament chemical vapor deposition method has been developed to grow at least one vertical single-walled carbon nanotube (SWNT). In general, various embodiments of the present invention disclose novel processes for growing and/or producing enhanced nanotube carpets with decreased diameters as compared to the prior art.

Hauge, Robert H; Xu, Ya-Qiong

2013-08-13T23:59:59.000Z

335

RATE SENSITIVITY OF PLASTIC FLOW AND IMPLICATIONS FOR YIELD-SURFACE VERTICES  

E-Print Network (OSTI)

RATE SENSITIVITY OF PLASTIC FLOW AND IMPLICATIONS FOR YIELD-SURFACE VERTICES Jwo PAN Stress; in recked form 29 Norember 1982) &tract-When crystalline slip is considered as the micromechanism of plastic sensitivity of plastic flow may be central to understanding the ambiguous conclusions from experimental

336

Numerical study of natural convection in a vertical porous annulus with discrete heating  

E-Print Network (OSTI)

Numerical study of natural convection in a vertical porous annulus with discrete heating M. Sankar online 20 December 2010 Keywords: Natural convection Annulus Discrete heating Porous medium Radii ratio to discrete heating. The outer wall is maintained iso- thermally at a lower temperature, while the top

Lopez, John M.

337

Supporting information for Vertically Grown Multi-walled Carbon Nanotube Anode  

E-Print Network (OSTI)

1 Supporting information for Vertically Grown Multi-walled Carbon Nanotube Anode and Nickel. Summarized fabrication process flow The anode chamber and contact area were constructed on a 4" P area for the ohmic contact from the anode to the external load. A layer of Ni was then evaporated

338

Three-Dimensional Structure and Evolution of the Vertical Velocity and Divergence Fields in the MJO  

Science Journals Connector (OSTI)

The features in the planetary-scale wind field that shape the MJO-related vertical velocity field are examined using the linear analysis protocol based on the daily global velocity potential field described in a companion paper, augmented by a ...

Ángel F. Adames; John M. Wallace

2014-12-01T23:59:59.000Z

339

Removal of indicator bacteria from municipal wastewater in an experimental two-stage vertical flow constructed  

E-Print Network (OSTI)

Removal of indicator bacteria from municipal wastewater in an experimental two-stage vertical flow, but no measurements were done during summer. Recycling of treated effluent back to the sedimentation tank did reasons for wastewater treatment. Constructed wetland systems remove pathogens by factors such as natural

Brix, Hans

340

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES  

E-Print Network (OSTI)

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND for conditions important for offshore wind energy utilisation are compared and tested: Four models tested with data from the offshore field measurement Rødsand by extrapolating the measured 10 m wind

Heinemann, Detlev

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES  

E-Print Network (OSTI)

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES important for offshore wind energy utilisation are discussed and tested: Four models for the surface tested with data from the offshore field measurement Rødsand by extrapolating the measured 10 m wind

Heinemann, Detlev

342

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES  

E-Print Network (OSTI)

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES important for offshore wind energy utilisation are discussed and tested: Four models for the surface tested with measurements from the offshore field measurement Rødsand by extrapolating the measured 10 m

Heinemann, Detlev

343

An analysis of the impact of vertical integration on the Texas Hog industry  

E-Print Network (OSTI)

in a vertically integrateu program if their sole purpose is to obtain additiona holp with management !, roblcms~ 'oecause most of 1+0 Ibid, Sile inm~m~ fixes au mt ino1uds usus?"eront. soar oss @mt, srs nat R Ini1stia roe o?nor Jo~ss Quail ss o...

McClure, Robert Harold

2012-06-07T23:59:59.000Z

344

Highly Ordered Vertical Silicon Nanowire Array Composite Thin Films for Thermoelectric Devices  

E-Print Network (OSTI)

Highly Ordered Vertical Silicon Nanowire Array Composite Thin Films for Thermoelectric Devices for thermoelectric devices are presented. Inter- ference lithography was used to pattern square lattice photoresist. The Si NW arrays were embedded in SOG to form a dense and robust composite material for device

Bowers, John

345

On the Use of an Adaptive, Hybrid-Isentropic Vertical Coordinate in Global Atmospheric Modeling  

Science Journals Connector (OSTI)

This article is one in a series describing the functionality of the Flow-Following, Finite-Volume Icosahedral Model (FIM) developed at NOAA’s Earth System Research Laboratory. Emphasis in this article is on the design of the vertical coordinate—...

Rainer Bleck; Stan Benjamin; Jin Lee; Alexander E. MacDonald

2010-06-01T23:59:59.000Z

346

Mode-Locked Fiber Lasers Using Adjustable Saturable Absorption in Vertically Aligned Carbon Nanotubes  

E-Print Network (OSTI)

Mode-Locked Fiber Lasers Using Adjustable Saturable Absorption in Vertically Aligned Carbon, carbon nanotube Passively mode-locked fiber lasers have been used in many applications in various fields or the cleaved fiber end.5) In these studies, we used single-walled carbon nanotubes (SWNTs) whose axial

Maruyama, Shigeo

347

Coriolis Effect on Dynamic Stall in a Vertical Axis Wind Turbine at Moderate Reynolds Number  

E-Print Network (OSTI)

axis wind turbines (VAWT) offer several advantages over horizontal axis wind turbines (HAWT), namely to yaw wind direction (because they are omnidirectional), and their increased power output in skewed flowCoriolis Effect on Dynamic Stall in a Vertical Axis Wind Turbine at Moderate Reynolds Number Hsieh

Colonius, Tim

348

Different algal symbionts explain the vertical distribution of dominant reef corals in the eastern Pacific  

Science Journals Connector (OSTI)

...the lower limits of distribution of their respective...The average water temperature at the study site for...July 2000. Seawater temperature was 27.8 2.0 C...responses consistent with `sun-loving' species...entire range of vertical distribution (figure 2a,b...

2004-01-01T23:59:59.000Z

349

Manuscript for publication in Journal of Contaminant Hydrology1 VERTICAL SMALL SCALE VARIATIONS OF SORPTION5  

E-Print Network (OSTI)

VARIATIONS OF SORPTION5 AND MINERALIZATION OF THREE HERBICIDES IN6 SUBSURFACE LIMESTONE AND SANDY AQUIFER7 8-4 (2011) 167-177" DOI : 10.1016/j.jconhyd.2011.01.002 #12;2 Abstract24 Vertical variation in sorption sub-samples of 4-5 cm length. In the sandy aquifer section acetochlor and31 isoproturon sorption

Paris-Sud XI, Université de

350

Noninvasive Monitoring of Vocal Fold Vertical Vibration Using The Acoustic Doppler Effect  

Science Journals Connector (OSTI)

SummaryObjectives/Hypothesis To validate a proposed method of noninvasively monitoring vocal fold vertical vibration through utilization of the acoustic Doppler effect and the waveguide property of the vocal tract. Study Design Validation case-control study. Methods In this device, an ultrasound beam is generated and directed into the mouth. The vocal tract, acting as a natural waveguide, guides the ultrasound beam toward the vibrating vocal folds. The vertical velocity of vocal fold vibration is then recovered from the Doppler frequency of the reflected ultrasound. One subject (age 32, male) was studied and measurements were taken under three modes of vocal fold vibration: breathing (no vibration), whispering (irregular vibration), and normal phonation (regular vibration). Results The peak-to-peak amplitude of the measured velocity of vocal fold vertical vibration was about 0.16 m/s, and the fundamental frequency was 172 Hz; the extracted velocity information showed a reasonable waveform and value in comparison with the previous studies. In all three modes of phonation, the Doppler frequencies derived from the reflected ultrasound corresponded with the vertical velocity of vocal fold vibration as expected. Conclusions The proposed method can accurately represent the characteristics of different phonation modes such as no phonation, whisper and normal phonation. The proposed device could be used in daily monitoring and assessment of vocal function and vocal fold vibration.

Chao Tao; Jack J. Jiang; Dan Wu; Xiaojun Liu; Ann Chodara

2012-01-01T23:59:59.000Z

351

A one-dimensional model of vertical gas plume migration through a heterogeneous porous medium  

E-Print Network (OSTI)

A one-dimensional model of vertical gas plume migration through a heterogeneous porous medium and consequent global warming. Ideally, the injected greenhouse gas stays in the injection zone for a geologic or inadvertently created conduits in the cap rock may result in a gas leakage from primary storage. Even

Patzek, Tadeusz W.

352

Vertical transport and dynamic size distribution of New Bedford Harbor sediments  

E-Print Network (OSTI)

Superfund Site. Samples were analyzed on a Coulter Counter, AVC-80 Suspended Solids machine, and a HACH Model 2100A Turbidimeter. A vertical transport model, which included flocculation and flo breakup, was developed and calibrated with these laboratory... Column. . . . . . . . . . . . . . . . . . . . . . . . Electronic Particle Counter. . . Suspended Solids and Turbidity . . . Density Meter Experimental Procedures. . . . . . . . . . . . . . . . . . . . . . . Data Analysis. 28 31 32 34 35 35 36...

Sanders, Stephanie Carol

1990-01-01T23:59:59.000Z

353

HOW WATER TEMPERATURE REALLY LIMITS THE VERTICAL MOVEMENTS OF TUNAS AND BILLFISHES -IT'S THE HEART STUPID  

E-Print Network (OSTI)

, limitations of catch per unit effort (CPUE) indexes, and the enormous difficulty of producing integrative current tuna and billfish stock assessment methods. Water Temperature Limits the Vertical Movements;muscle and heat loss at the gills. These unique structures thus allow tunas to keep their muscles

Hawai'i at Manoa, University of

354

Multi-Fidelity Uncertainty Quantification: Application to a Vertical Axis Wind Turbine Under an  

E-Print Network (OSTI)

. Introduction Quantifying the response of a wind turbine to an extreme wind gust is an important designMulti-Fidelity Uncertainty Quantification: Application to a Vertical Axis Wind Turbine Under an Extreme Gust A. Santiago Padr´on , Juan J. Alonso and Francisco Palacios Stanford University, Stanford, CA

Alonso, Juan J.

355

Unmanned airborne vehicle (UAV): Flight testing and evaluation of two-channel E-field very low frequency (VLF) instrument  

SciTech Connect

Using VLF frequencies, transmitted by the Navy`s network, for airborne remote sensing of the earth`s electrical, magnetic characteristics was first considered by the United States Geological Survey (USGS) around the mid 1970s. The first VLF system was designed and developed by the USGS for installation and operation on a single engine, fixed wing aircraft used by the Branch of Geophysics for geophysical surveying. The system consisted of five channels. Two E-field channels with sensors consisting of a fixed vertical loaded dipole antenna with pre-amp mounted on top of the fuselage and a gyro stabilized horizontal loaded dipole antenna with pre-amp mounted on a tail boom. The three channel magnetic sensor consisted of three orthogonal coils mounted on the same gyro stabilized platform as the horizontal E-field antenna. The main features of the VLF receiver were: narrow band-width frequency selection using crystal filters, phase shifters for zeroing out system phase variances, phase-lock loops for generating real and quadrature gates, and synchronous detectors for generating real and quadrature outputs. In the mid 1990s the Branch of Geophysics designed and developed a two-channel E-field ground portable VLF system. The system was built using state-of-the-art circuit components and new concepts in circuit architecture. Small size, light weight, low power, durability, and reliability were key considerations in the design of the instrument. The primary purpose of the instrument was for collecting VLF data during ground surveys over small grid areas. Later the system was modified for installation on a Unmanned Airborne Vehicle (UAV). A series of three field trips were made to Easton, Maryland for testing and evaluating the system performance.

NONE

1998-12-01T23:59:59.000Z

356

Experimental and finite element analysis research on cold-formed steel lipped channel beams under web crippling  

Science Journals Connector (OSTI)

Abstract This article presents the results of an investigation into web crippling behavior of cold-formed steel lipped channel beams subjected to end-one-flange (EOF), interior-one-flange (IOF), end-two-flange (ETF), and interior-two-flange (ITF) loading conditions. A total of 48 cold-formed steel lipped channel beams with different boundary conditions, loading conditions, bearing lengths, and section heights were tested. The experimental scheme, failure modes, concentrated load-general vertical deformation and strain intensity distribution curves are presented in the article. The effect of boundary condition, loading condition, bearing length and section height on web crippling ultimate capacity and ductility of cold-formed steel lipped channel beams was also studied. Results of these tests show that the effect of bearing length on the web crippling ultimate capacity in EOF and ETF loading conditions is more obvious than those in IOF and ITF loading conditions. When bearing length is 50, 100, and 150 mm, web crippling ultimate capacity of cold-formed steel lipped channel beams with web slenderness=78 reaches its peak. The middle web enters plasticity and form plastic hinge zone. The values of web crippling ultimate capacity in interior-flange loading conditions are larger than those in end-flange loading conditions. It is shown that the specimens in the interior-flange loading conditions have higher ultimate capacity, larger initial stiffness and better ductility than those of specimens in the end-flange loading conditions. Finite element analysis can simulate experimental failure mode and web crippling ultimate capacity. The calculation equations of web crippling ultimate capacity put forward in the article can accurately predict experimental value.

Yu Chen; Xixiang Chen; Chaoyang Wang

2015-01-01T23:59:59.000Z

357

Cryogenic system for the Energy Recovery Linac and vertical test facility at BNL  

SciTech Connect

A small cryogenic system and warm helium vacuum pumping system provides cooling to either the Energy Recovery Linac's (ERL) cryomodules that consist of a 5-cell cavity and an SRF gun or a large Vertical Test Dewar (VTD) at any given time. The cryogenic system consists of a model 1660S PSI piston plant, a 3800 liter storage dewar, subcooler, a wet expander, a 50 g/s main helium compressor, and a 170 m{sup 3} storage tank. A system description and operating plan of the cryogenic plant and cryomodules is given. The cryogenic system for ERL and the Vertical Test Dewar has a plant that can produce the equivalent of 300W at 4.5K with the addition of a wet expander 350 W at 4.5K. Along with this system, a sub-atmospheric, warm compression system provides pumping to produce 2K at the ERL cryomodules or the Vertical Test Dewar. The cryogenic system for ERL and the Vertical Test Dewar makes use of existing equipment for putting a system together. It can supply either the ERL side or the Vertical Test Dewar side, but not both at the same time. Double valve isolation on the liquid helium supply line allows one side to be warmed to room temperature and worked on while the other side is being held at operating temperature. The cryogenic system maintain the end loads from 4.4K to 2K or colder depending on capacity. Liquid helium storage dewar capacity allows ERL or the VTD to operate above the plant's capacity when required and ERL cryomodules ballast reservoirs and VTD reservoir allows the end loads to operate on full vacuum pump capacity when required.

Than, R.; Soria, V.; Lederle, D.; Orfin, P.; Porqueddu, R.; Talty, P.; Zhang, Y.; Tallerico, T.; Masi, L.

2011-03-28T23:59:59.000Z

358

Magnets for Muon 6D Cooling Channels  

SciTech Connect

The Helical Cooling Channel (HCC), an innovative technique for six-dimensional (6D) cooling of muon beams using a continuous absorber inside superconducting magnets, has shown considerable promise based on analytic and simulation studies. The implementation of this revolutionary method of muon cooling requires high field superconducting magnets that provide superimposed solenoid, helical dipole, and helical quadrupole fields. Novel magnet design concepts are required to provide HCC magnet systems with the desired fields for 6D muon beam cooling. New designs feature simple coil configurations that produce these complex fields with the required characteristics, where new high field conductor materials are particularly advantageous. The object of the program was to develop designs and construction methods for HCC magnets and design a magnet system for a 6D muon beam cooling channel. If successful the program would develop the magnet technologies needed to create bright muon beams for many applications ranging from scientific accelerators and storage rings to beams to study material properties and new sources of energy. Examples of these applications include energy frontier muon colliders, Higgs and neutrino factories, stopping muon beams for studies of rare fundamental interactions and muon catalyzed fusion, and muon sources for cargo screening for homeland security.

Johnson, Rolland [Muons, Inc.; Flanagan, Gene [Muons, Inc.

2014-09-10T23:59:59.000Z

359

Channeling of positrons from. mu. /sup +/ decay  

SciTech Connect

The first attempt to observe the steering or channeling effect of a host crystal lattice on the trajectories of decay positrons from interstitial positive muons is described. An enhanced (flux peaking) or diminished (blocking) positron counting rate for emission along a low index crystalline axis would be evidence of such an effect and would help to determine the lattice location of the emitting muon. The expected angular widths of these features is approximately 0.2/sup 0/. A 29.8 MeV/c surface ..mu../sup +/ beam was stopped in a high quality silicon crystal wafer which was elastically bent to a good approximation to a spherical cap. This brought the (100) axes, which were initially normal to the wafer surface, to a focus at the radius of curvature R = 110 cm. The normalized e/sup +/ rate was measured as a function of position with a small two-counter scintillation telescope which was moved through the focus. We found no evidence for channeling at the 17% level, suggesting that the ..mu../sup +/ in Si either (1) makes large vibratory excursions, (2) occupies a site of low symmetry, or (3) occupies one of several possible inequivalent stopping sites.

Patterson, B.D. (Simon Fraser Univ., Burnaby, British Columbia); Arrott, A.S.; Wichert, T.

1980-06-01T23:59:59.000Z

360

Ion exchange phase transitions in "doped" water--filled channels  

E-Print Network (OSTI)

Ion transport through narrow water--filled channels is impeded by a high electrostatic barrier. The latter originates from the large ratio of the dielectric constants of the water and a surrounding media. We show that ``doping'', i.e. immobile charges attached to the walls of the channel, substantially reduces the barrier. This explains why most of the biological ion channels are ``doped''. We show that at rather generic conditions the channels may undergo ion exchange phase transitions (typically of the first order). Upon such a transition a finite latent concentration of ions may either enter or leave the channel, or be exchanged between the ions of different valences. We discuss possible implications of these transitions for the Ca-vs.-Na selectivity of biological Ca channels. We also show that transport of divalent Ca ions is assisted by their fractionalization into two separate excitations.

J. Zhang; A. Kamenev; B. I. Shklovskii

2005-10-12T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Electric-field-driven polymer entry into asymmetric nanoscale channels  

E-Print Network (OSTI)

The electric-field-driven entry process of flexible charged polymers such as single stranded DNA (ssDNA) into asymmetric nanoscale channels such as alpha-hemolysin protein channel is studied theoretically and using molecular dynamics simulations. Dependence of the height of the free-energy barrier on the polymer length, the strength of the applied electric field and the channel entrance geometry is investigated. It is shown that the squeezing effect of the driving field on the polymer and the lateral confinement of the polymer before its entry to the channel crucially affect the barrier height and its dependence on the system parameters. The attempt frequency of the polymer for passing the channel is also discussed. Our theoretical and simulation results support each other and describe related data sets of polymer translocation experiments through the alpha-hemolysin protein channel reasonably well.

Narges Nikoofard; Hossein Fazli

2012-02-25T23:59:59.000Z

362

Communication channel of fermionic system in accelerated frame  

E-Print Network (OSTI)

In this article, we investigate the communication channel of fermionic system in an accelerated frame. We observe that at the infinite acceleration, the mutual information of single rail quantum channel coincides with that of double rail quantum channel, but those of classical ones reach different values. Furthermore, we find that at the infinite acceleration, the conditional entropy of single(or double) rail quantum channel vanishes, but those of classical ones may have finite values. In addition, we see that even when considering a method beyond the single mode approximation, the dual rail entangled state seems to provide better channel capacity than the single rail entangled state, unlike the bosonic case. Moreover, we find that the single-mode approximation is not sufficient to analyze the communication channel of fermionic system in an accelerated frame.

Jinho Chang; Younghun Kwon

2012-06-28T23:59:59.000Z

363

Prediction of Vertical Motions for Landing Operations of UAVs Xilin Yang, Hemanshu Pota, Matt Garratt and Valery Ugrinovskii  

E-Print Network (OSTI)

by the local stochastic sea states such as barometric pressure, wind speed and wave heights [1]. AlsoPrediction of Vertical Motions for Landing Operations of UAVs Xilin Yang, Hemanshu Pota, Matt vertical motions for safe landing of unmanned aerial vehicles (UAVs) during maritime operations

Pota, Himanshu Roy

364

On the Vertical Decay Rate of the Maximum Tangential Winds in Tropical Cyclones DANIEL P. STERN* AND DAVID S. NOLAN  

E-Print Network (OSTI)

On the Vertical Decay Rate of the Maximum Tangential Winds in Tropical Cyclones DANIEL P. STERN independent of both the maximum wind speed and the radius of maximum winds (RMW). This can be seen winds change with height. Above 2-km height, vertical profiles of Vmaxnorm are nearly independent

Nolan, David S.

365

The Price of Matching Selfish Vertices or: How much love is lost because our governments do not arrange marriages?  

E-Print Network (OSTI)

The Price of Matching Selfish Vertices or: How much love is lost because our governments do of minimum-cost perfect matchings with selfish vertices through the price of anarchy (PoA) and price the cost of her own matching edge. Keywords: minimum-cost perfect matching, stable matching, price

366

Boiling heat transfer in a vertical microchannel: Local estimation during flow boiling with a non intrusive method  

E-Print Network (OSTI)

Boiling heat transfer in a vertical microchannel: Local estimation during flow boiling with a non the results of experimental and numerical studies concerning boiling heat transfer inside vertical in minichannels for several gravity levels (µg, 1g, 2g). To fully understand the high heat transfer potential

367

Penetration of 90Sr and 137Cs in deep layers of the Pacific and vertical diffusion rate of deep water  

Science Journals Connector (OSTI)

......June 1962 research-article Article Penetration of 90Sr and 137Cs in deep layers of the Pacific and vertical diffusion rate of deep water Yasuo Miyake * Katsuko...Mabashi, Suginami, Tokyo Vertical penetration of Sr-90 and Cs-137 down to 5......

Yasuo Miyake; Katsuko Saruhashi; Yukio Katsuragi; Teruko Kanazawa

1962-06-01T23:59:59.000Z

368

Numerical calculation of AC substation grounding systems buried in a vertical multilayered earth model by higher-order basis function  

Science Journals Connector (OSTI)

To study the accuracy of numerical simulations for an AC substation grounding problem embedded in a vertical multilayered earth model, this paper proposes a novel algorithm combining the rapidly convergent one-dimensional Galerkin's BEM with higher-order ... Keywords: Green's function, high-order basic function, vertical multilayered earth model

Zhong-Xin Li; Jian-Bin Fan; Yu Yin

2012-05-01T23:59:59.000Z

369

Functional MR imaging of the awake monkey in a novel vertical large-bore 7 Tesla setup J. Pfeuffer1  

E-Print Network (OSTI)

Functional MR imaging of the awake monkey in a novel vertical large-bore 7 Tesla setup J. Pfeuffer1 , J. Pauls1 , M. Augath1 , T. Steudel1 , H. Merkle2 , N. K. Logothetis1 1 Max Planck InstituteMRI results in the awake trained monkey (Macaca mulatta) using a novel vertical 7T/60cm MR system are reported

Jegelka, Stefanie

370

FxLMS method for suppressing in-wheel switched reluctance motor vertical force based on vehicle active suspension system  

Science Journals Connector (OSTI)

The vibration of SRM obtains less attention for in-wheel motor applications according to the present research works. In this paper, the vertical component of SRM unbalanced radial force, which is named as SRM vertical force, is taken into account in ...

Yan-yang Wang, Yi-nong Li, Wei Sun, Chao Yang, Guang-hui Xu

2014-01-01T23:59:59.000Z

371

Application of Vertically-Aligned SWNT Films for the Counter Electrode of Dye-Sensitized Solar Cells  

E-Print Network (OSTI)

Application of Vertically-Aligned SWNT Films for the Counter Electrode of Dye-Sensitized Solar a solar cell in which VA-SWNT films were used for a CE, in place of conventional sputtered Pt on fluorine to use vertically aligned single-walled carbon nanotube (VA-SWNT) films [1] synthesized by ACCVD method

Maruyama, Shigeo

372

Steady-state estuarine modeling of the Brownsville ship channel  

E-Print Network (OSTI)

. Inflow Quantity/Quality, Brownsville Ship Channel 10. Wind Occurrences, Brownsville Ship Channel Location: CMD Platform . 11. Salinity Measurements, San Martin Lake Discharge Ditch, July 1975 . 12. Characteristic Non-Point Source Parameters 13. Waste... Lake System Brownsville Ship Channel Physical Profile Hydraulic Characteristics Point Source Waste Loads Evaluation Hydrology CHAPTER II I. MATHEMATICAL MODEL SIMULATION Introduction Description of Mathematical Model "ESTPOL VERSION II" Basin...

Maldonado, Roberto Jaime

2012-06-07T23:59:59.000Z

373

Catalyzing Alpha-Channeling by Minority Ion Injection in Mirror...  

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

Maintaining fuel ions hotter than electrons would greatly facilitate controlled nuclear fusion. Alpha channeling is a technique that can potentially extract energy from fusion...

374

Massively parallel processor networks with optical express channels  

DOE Patents (OSTI)

An optical method for separating and routing local and express channel data comprises interconnecting the nodes in a network with fiber optic cables. A single fiber optic cable carries both express channel traffic and local channel traffic, e.g., in a massively parallel processor (MPP) network. Express channel traffic is placed on, or filtered from, the fiber optic cable at a light frequency or a color different from that of the local channel traffic. The express channel traffic is thus placed on a light carrier that skips over the local intermediate nodes one-by-one by reflecting off of selective mirrors placed at each local node. The local-channel-traffic light carriers pass through the selective mirrors and are not reflected. A single fiber optic cable can thus be threaded throughout a three-dimensional matrix of nodes with the x,y,z directions of propagation encoded by the color of the respective light carriers for both local and express channel traffic. Thus frequency division multiple access is used to hierarchically separate the local and express channels to eliminate the bucket brigade latencies that would otherwise result if the express traffic had to hop between every local node to reach its ultimate destination.

Deri, Robert J. (Pleasanton, CA); Brooks, III, Eugene D. (Livermore, CA); Haigh, Ronald E. (Tracy, CA); DeGroot, Anthony J. (Castro Valley, CA)

1999-01-01T23:59:59.000Z

375

Finding out how particles move through nanoparticle channels...  

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

Finding out how particles move through nanoparticle channels Scientists at the U.S. Department of Energy's Ames Laboratory have developed deeper understanding of the ideal design...

376

Design and analysis of iteratively decodable codes for ISI channels  

E-Print Network (OSTI)

discrete-time ISI channel, denoted by yn, can be expressed as yn = Lsummationdisplay ?=0 f? ?xn?? +zn = rn +zn, 0 ?nchannel input sequence of length N, rn is the noiseless channel output, fL0 = (f0,f1,...,f... the noiseless channel output energy 1N summationtextN?1n=0 |rn|2 often results in higher entropy h(YN?10 ), and consequently higher mutual information. This input sequence can be found by using an algorithm which is similar to the Viterbi algorithm to find...

Doan, Dung Ngoc

2005-11-01T23:59:59.000Z

377

Emission spectrum of the atomic chain excited by channeled particle  

E-Print Network (OSTI)

Basic properties of radiation of the atomic chains excited by a channeled particle are considered. Using a very simple two-dimensional model of a crystal lattice we have shown that the main part of this radiation is generated on the frequency of oscillations of a channeled particle between the crystal planes, shifted by the Doppler effect. Spectral and angular distribution and spectral distribution of the radiation of the atomic chain excited by channeled particle were calculated. Emission spectrum of the atomic chain excited by channeled particle was plotted.

Epp, V

2014-01-01T23:59:59.000Z

378

Report (Vertical)  

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

Savings Plan 11 December 1, 2009 Expected Risk (Standard Deviation) Expected Rate of Return Current Investment Categories Theoretical Return and Risk Chart Int'l Equity...

379

Report (Vertical)  

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

the ups and downs of the stock market can limit your market risk. Keep in mind that past investment return is no guarantee of future performance. You may wish to consult a...

380

Negative-U centers as a basis of topological edge channels  

SciTech Connect

We present the findings of the studies of the silicon sandwich nanostructure that represents the high mobility ultranarrow silicon quantum well of the p-type (Si-QW), 2 nm, confined by the ?-barriers, 3 nm, heavily doped with boron on the n-type Si (100) surface. The ESR studies show that nanostructured ?-barriers confining the Si-QW consist predominantly of the dipole negative-U centers of boron, which are caused by the reconstruction of the shallow boron acceptors along the <111> crystallographic axis, 2B{sup 0}?B{sup +}+B{sup ?}. The electrically ordered chains of dipole negative-U centers of boron in the ?-barriers appear to give rise to the topological edge states separated vertically, because the value of the longitudinal, G{sub xx}?=?4e{sup 2}/h, and transversal, G{sub xy}?=?e{sup 2}/h, conductance measured at extremely low drain-source current indicates the exhibition of the Quantum Spin Hall effect. Besides, the Aharonov-Casher conductance oscillations and the “0.7?(2e{sup 2}/h)-feature” obtained are evidence of the interplay of the spontaneous spin polarisation and the Rashba spin-orbit interaction that is attributable to the formation of the topological edge channels. We discuss the phenomenological model of the topological edge channel which can demonstrate the ballistic, Aharonov-Chasher effect or Josephson junction behaviour in dependence on the disorder in the distribution of the negative-U dipole centers in the upper and down d-barriers.

Bagraev, Nikolay; Danilovskii, Eduard; Klyachkin, Leonid; Kudryavtsev, Andrey; Malyarenko, Anna [Ioffe Physical Technical Institute, Polytekhnicheskaya 26, 194021 St. Petersburg (Russian Federation); Gehlhoff, Wolfgang [Technische Universitaet Berlin, D-10623, Berlin (Germany); Mashkov, Vladimir [St. Petersburg State Polytechnical University, Polytekhnicheskaya 29, 195251 St. Petersburg (Russian Federation)

2014-02-21T23:59:59.000Z

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


381

Hydrokinetic energy conversion systems and assessment of horizontal and vertical axis turbines for river and tidal applications: A technology status review  

Science Journals Connector (OSTI)

The energy in flowing river streams, tidal currents or other artificial water channels is being considered as viable source of renewable power. Hydrokinetic conversion systems, albeit mostly at its early stage of development, may appear suitable in harnessing energy from such renewable resources. A number of resource quantization and demonstrations have been conducted throughout the world and it is believed that both in-land water resources and offshore ocean energy sector will benefit from this technology. In this paper, starting with a set of basic definitions pertaining to this technology, a review of the existing and upcoming conversion schemes, and their fields of applications are outlined. Based on a comprehensive survey of various hydrokinetic systems reported to date, general trends in system design, duct augmentation, and placement methods are deduced. A detailed assessment of various turbine systems (horizontal and vertical axis), along with their classification and qualitative comparison, is presented. In addition, the progression of technological advancements tracing several decades of R&D efforts are highlighted.

M.J. Khan; G. Bhuyan; M.T. Iqbal; J.E. Quaicoe

2009-01-01T23:59:59.000Z

382

Power module assemblies with staggered coolant channels  

DOE Patents (OSTI)

A manifold is provided for supporting a power module assembly with a plurality of power modules. The manifold includes a first manifold section. The first face of the first manifold section is configured to receive the first power module, and the second face of the first manifold section defines a first cavity with a first baseplate thermally coupled to the first power module. The first face of the second manifold section is configured to receive the second power module, and the second face of the second manifold section defines a second cavity with a second baseplate thermally coupled to the second power module. The second face of the first manifold section and the second face of the second manifold section are coupled together such that the first cavity and the second cavity form a coolant channel. The first cavity is at least partially staggered with respect to second cavity.

Herron, Nicholas Hayden; Mann, Brooks S; Korich, Mark D

2013-07-16T23:59:59.000Z

383

Structural organization of gap junction channels  

Science Journals Connector (OSTI)

Gap junctions were initially described morphologically, and identified as semi-crystalline arrays of channels linking two cells. This suggested that they may represent an amenable target for electron and X-ray crystallographic studies in much the same way that bacteriorhodopsin has. Over 30 years later, however, an atomic resolution structural solution of these unique intercellular pores is still lacking due to many challenges faced in obtaining high expression levels and purification of these structures. A variety of microscopic techniques, as well as NMR structure determination of fragments of the protein, have now provided clearer and correlated views of how these structures are assembled and function as intercellular conduits. As a complement to these structural approaches, a variety of mutagenic studies linking structure and function have now allowed molecular details to be superimposed on these lower resolution structures, so that a clearer image of pore architecture and its modes of regulation are beginning to emerge.

Gina E. Sosinsky; Bruce J. Nicholson

2005-01-01T23:59:59.000Z

384

Mathematical Modeling on Open Limestone Channel  

E-Print Network (OSTI)

Acid mine drainage (AMD) is the outflow of acidic water from metal mines or coal mines. When exposed to air and water, metal sulfides from the deposits of the mines are oxidized and produce acid, metal ions and sulfate, which lower the pH value of the water. An open limestone channel (OLC) is a passive and low cost way to neutralize AMD. The dissolution of calcium into the water increases the pH value of the solution. A differential equation model is numerically solved to predict the variation of concentration of each species in the OLC solution. The diffusion of Calcium due to iron precipitates is modeled by a linear equation. The results give the variation of pH value and the concentration of Calcium.

Bandstra, Joel; Wu, Naiyi

2014-01-01T23:59:59.000Z

385

OXY-fuel Combustion at the CANMET Vertical Combustor Research Faciltiy  

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

OXY-FUEL COMBUSTION OXY-FUEL COMBUSTION At the CANMET Vertical Combustor Research Facility M.A.Douglas 1 ( madougla@nrcan.gc.ca ; +001-613-996-2761) E. Chui ( echui@nrcan.gc.ca ; +001-613-943-1774) Y. Tan ( ytan@nrcan.gc.ca ; +001-613-992- 8150) G. K. Lee 2 ( gklee@magma.ca ; +001-613-829-3845) E. Croiset 3 ( ecroiset@uwaterloo.ca ; +001-519-888-4567-ext 6472) K. V. Thambimuthu 4 ( kelly.thambimuthu@nrcan.gc.ca ) CANMET Energy Technology Centre, Natural Resources Canada, 1 Haanel Dr., Ottawa, Ontario, Canada, K1A 1M1 ABSTRACT The CANMET Energy Technology Center is a division of Natural Resources Canada and undertakes primary research and technology development activities for the benefit of Canadians and a wide range of external clients. The Vertical Combustor Research Facility (VCRF) was built in 1994 and is CANMET's

386

Vertical Seismic Profiling At Rye Patch Area (Feighner, Et Al., 1999) |  

Open Energy Info (EERE)

Feighner, Et Al., 1999) Feighner, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Vertical Seismic Profiling At Rye Patch Area (Feighner, Et Al., 1999) Exploration Activity Details Location Rye Patch Area Exploration Technique Vertical Seismic Profiling Activity Date Usefulness useful DOE-funding Unknown Notes In December 1997 LBNL obtained a VSP in well 46-28 to determine the seismic reflectivity in the area and to obtain velocity information for the design and potential processing of the proposed 3-D seismic survey Feighner et al. (1998). Because the results of the VSP indicated apparent reflections, TGI proceeded with the collection of 3.0 square miles of 3-D surface seismic data over the Rye Patch reservoir. References M. Feighner, R. Gritto, T. M. Daley, H. Keers, E. L. Majer (1999)

387

THE VERTICAL COMPOSITION OF NEUTRINO-DOMINATED ACCRETION DISKS IN GAMMA-RAY BURSTS  

SciTech Connect

We investigate the vertical structure and element distribution of neutrino-dominated accretion flows around black holes in spherical coordinates using the reasonable nuclear statistical equilibrium. According to our calculations, heavy nuclei tend to be produced in a thin region near the disk surface, whose mass fractions are primarily determined by the accretion rate and vertical distribution of temperature and density. In this thin region, we find that {sup 56}Ni is dominant for the flow with a low accretion rate (e.g., 0.05 M {sub Sun} s{sup -1}), but {sup 56}Fe is dominant for the flow with a high accretion rate (e.g., 1 M {sub Sun} s{sup -1}). The dominant {sup 56}Ni in the aforementioned region may provide a clue to understanding the bumps in the optical light curve of core-collapse supernovae.

Liu, Tong; Xue, Li; Gu, Wei-Min; Lu, Ju-Fu, E-mail: tongliu@xmu.edu.cn [Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005 (China)] [Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen, Fujian 361005 (China)

2013-01-10T23:59:59.000Z

388

In situ oil shale retort with a generally T-shaped vertical cross section  

DOE Patents (OSTI)

An in situ oil shale retort is formed in a subterranean formation containing oil shale. The retort contains a fragmented permeable mass of formation particles containing oil shale and has a production level drift in communication with a lower portion of the fragmented mass for withdrawing liquid and gaseous products of retorting during retorting of oil shale in the fragmented mass. The principal portion of the fragmented mass is spaced vertically above a lower production level portion having a generally T-shaped vertical cross section. The lower portion of the fragmented mass has a horizontal cross sectional area smaller than the horizontal cross sectional area of the upper principal portion of the fragmented mass above the production level.

Ricketts, Thomas E. (Grand Junction, CO)

1981-01-01T23:59:59.000Z

389

Effective index model predicts modal frequencies of vertical-cavity lasers  

SciTech Connect

Previously, an effective index optical model was introduced for the analysis of lateral waveguiding effects in vertical-cavity surface-emitting lasers. The authors show that the resultant transverse equation is almost identical to the one typically obtained in the analysis of dielectric waveguide problems, such as a step-index optical fiber. The solution to the transverse equation yields the lateral dependence of the optical field and, as is recognized in this paper, the discrete frequencies of the microcavity modes. As an example, they apply this technique to the analysis of vertical-cavity lasers that contain thin-oxide apertures. The model intuitively explains the experimental data and makes quantitative predictions in good agreement with a highly accurate numerical model.

SERKLAND,DARWIN K.; HADLEY,G. RONALD; CHOQUETTE,KENT D.; GEIB,KENT M.; ALLERMAN,ANDREW A.

2000-04-18T23:59:59.000Z

390

Theory of the ion-channel laser  

SciTech Connect

A relativistic electron beam propagating through a plasma in the ion-focussed regime exhibits an electromagnetic instability with peak growth rate near a resonant frequency {omega}{approximately}2 {gamma}{sup 2} {omega}{beta}, where {gamma} is the Lorentz factor and {omega}{beta} is the betatron frequency. The physical basis for this instability is that an ensemble of relativistic simple harmonic oscillators, weakly driven by an electromagnetic wave, will lose energy to the wave through axial bunching. This bunching'' corresponds to the development of an rf component in the beam current, and a coherent centroid oscillation. The subject of this thesis is the theory of a laser capitalizing on this electromagnetic instability. A historical perspective is offered. The basic features of relativistic electron beam propagation in the ion-focussed regime are reviewed. The ion-channel laser (ICL) instability is explored theoretically through an eikonal formalism, analgous to the KMR'' formalism for the free-electron laser (FEL). The dispersion relation is derived, and the dependence of growth rate on three key parameters is explored. Finite temperature effects are assessed. From this work it is found that the typical gain length for amplification is longer than the Rayleigh length and we go on to consider three mechanisms which will tend to guide waveguide. First, we consider the effect of the ion channel as a dielectric waveguide. We consider next the use of a conducting waveguide, appropriate for a microwave amplifier. Finally, we examine a form of optical guiding'' analgous to that found in the FEL. The eikonal formalism is used to model numerically the instability through and beyond saturation. Results are compared with the numerical simulation of the full equations of motion, and with the analytic scalings. The analytical requirement on detuning spread is confirmed.

Whittum, D.H.

1990-09-01T23:59:59.000Z

391

Vertically coupled polymer microracetrack resonators for Label-Free Biochemical sensors  

E-Print Network (OSTI)

We report on the efficient design and fabrication of polymeric microracetrack optical resonators for label-free biosensing purposes. Vertically-coupled microresonators immersed in deionised water display high Q-factors (>35000) and finesses up to 25. A surface sensing experiment performed with these microresonators using 5-TAMRA cadaverine as a test molecule demonstrated both the high sensitivity and low detection limit of our device.

Delezoide, Camille; Lautru, Joseph; Leh, Hervé; Noguès, Claude; Zyss, Joseph; Buckle, Malcolm; Ledoux-Rak, Isabelle; Nguyen, Chi Thanh

2014-01-01T23:59:59.000Z

392

Vertical sampling flights in support of the 1981 ASCOT cooling tower experiments: field effort and data  

SciTech Connect

During the month of August 1981, three nights of experimental sampling of tracers released into the cooling tower plume of a geothermal power plant were conducted. In these experiments a tethered balloon was used to lift a payload so as to obtain vertical profiles of the cooling tower plume and the entrained tracers. A description of the equipment used, the field effort and the data acquired are presented here.

Gay, G.T.

1982-03-01T23:59:59.000Z

393

Estimation of vertical permeability from production data of wells in bottom water drive reservoirs  

E-Print Network (OSTI)

in Vertical Permeability Introduced by Erroneous Horizontal Permeabilty on Future performance of a Mell 13 39 43 43 10 Effect of Production From Test Perforation on Future Performance of a Well (Kh/Kv 1) . . . . . . . . . . . 57 Effect of Production... between perforations and the WOC, Kh/Kv = I . . . . . . . . . . . . . . . . . . . . . . . 17 Effect of cell break-up on producing WOR performance for 9 ft interval between perforations and the WOC, Kh/Kv 30 . l8 Effect of cell break-up on cumulative...

Tirek, Ali

1982-01-01T23:59:59.000Z

394

Empirical vertical structure of density anomaly in the Gulf of Mexico  

E-Print Network (OSTI)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 4. 3 Dynamic Mode Residuals Related to Gibbs' Phenomenon . . . . . . . . . . . . . . . . . . . . . 63 4. 4 Confidence Limits on Estimates of Mean Values of A? and Bn . . . . . . . . . . . 64 4. 5 Physical Interpretation of Indirect EOFs... of matrix CI: for 787 unbinned stations. . . . . . . . . . . . . . . . . . . . . . . 140 CHAPTER I INTRODUCTION 1. 1 Characterization of Vertical Structure in a Basin of Variable Depth The Gulf of Mexico is a semi-enclosed basin of variable depth...

Current, Carole Louise

1993-01-01T23:59:59.000Z

395

Nutrient removal efficiency and resource economics of vertical flow and horizontal flow constructed wetlands  

Science Journals Connector (OSTI)

In order to reduce the very high costs of sewage disposal in the new federal states of Germany, more decentralized purification systems need to be established. To attain higher surface water quality, and thereby the acceptance of such systems by governmental authorities, good removal rates for organic substances and also for nutrients (N, P) are necessary. Constructed wetlands for wastewater treatment (reed-bed systems) in Germany and in the USA have been used successfully. This study compares the purification performances of constructed horizontal flow wetlands (HFW) and vertical flow wetlands (VFW), including: (1) a small horizontal flow wetland (HFW); (2) a sloped HFW; (3) a larger HFW; (4) a stratified vertical flow wetland (VFW); and (5) an unstratified VFW. It is shown that both the horizontal flow and vertical flow systems can remove more than 90% of organic load and of total N and P, if there is an effective precleaning step, and if the specific treatment area is great enough (>50 m2/m3 per d). \\{HFWs\\} have an advantage in long-term removal of P because it is bound to organic substances to a high degree. Decentral and semicentral natural treatment systems also save material (76%) and energy (83%) for their function compared with central technical systems.

Volker Luederitz; Elke Eckert; Martina Lange-Weber; Andreas Lange; Richard M Gersberg

2001-01-01T23:59:59.000Z

396

Characterization of Vertical Velocity and Drop Size Distribution Parameters in Widespread Precipitation at ARM Facilities  

SciTech Connect

Extended, high-resolution measurements of vertical air motion and median volume drop diameter D0 in widespread precipitation from three diverse Atmospheric Radiation Measurement Program (ARM) locations [Lamont, Oklahoma, Southern Great Plains site (SGP); Niamey, Niger; and Black Forest, Germany] are presented. The analysis indicates a weak (0-10 cm{sup -1}) downward air motion beneath the melting layer for all three regions, a magnitude that is to within the typical uncertainty of the retrieval methods. On average, the hourly estimated standard deviation of the vertical air motion is 0.25 m s{sup -1} with no pronounced vertical structure. Profiles of D0 vary according to region and rainfall rate. The standard deviation of 1-min-averaged D0 profiles for isolated rainfall rate intervals is 0.3-0.4 mm. Additional insights into the form of the raindrop size distribution are provided using available dual-frequency Doppler velocity observations at SGP. The analysis suggests that gamma functions better explain paired velocity observations and radar retrievals for the Oklahoma dataset. This study will be useful in assessing uncertainties introduced in the measurement of precipitation parameters from ground-based and spaceborne remote sensors that are due to small-scale variability.

Giangrande S. E.; Luke, E. P.; Kollias, P.

2012-02-01T23:59:59.000Z

397

Optical performance of vertical heliostat fields integrated in building façades for concentrating solar energy uses  

Science Journals Connector (OSTI)

Abstract One way for integrating concentrating solar energy systems based on central receiver technology in metropolitan areas consists of using building façades as frame for installing a heliostat reflector field that reflects radiation coming from the sun towards a common area where receiver is located. This work analyzes the optical performance of vertical solar field concept. It provides the effect of several geometric parameters such as receiver height, separation between heliostat edges, and different building typologies on the hourly and annual optical efficiency along the year including the contribution of different optical efficiency factors such as shadowing, blocking, cosine, and spillage. The optical efficiency of a vertical heliostat field was found to be mainly controlled by shadowing, cosine and spillage factors. The field reaches the maximum overall optical efficiency during spring and winter at noon time and the minimum ones during the summer season mainly due to shadowing factor. Results obtained for best configurations are comparable to those ones reached by traditional horizontal field arrangements, what supports the feasibility of the vertical heliostats field concept as a CSP building integrated facility.

Aurelio González-Pardo; Sara Cesar Chapa; José Gonzalez-Aguilar; Manuel Romero

2013-01-01T23:59:59.000Z

398

Vertical interference pressure testing across a low-permeability zone with unsteady crossflow  

SciTech Connect

Existing analytical models for interpreting vertical interference pressure tests across the low permeability zone in a three-layered reservoir usually assume transient radial flow in the high permeability layers and pseudo-steady vertical crossflow in the intervening tight zone. The neglect of vertical flow in the high permeability layers, and the neglect of radial flow in the tight layer, requires the permeability contrast between these layers to be large. However, when this assumption is satisfied, it is also very likely that the pressure diffusivity in the tight layer is much smaller than that in the high permeability layers. Thus, to be consistent, the flow across the tight layer must be treated as an unsteady diffusive process driven by the transient pressure changes occurring in the high permeability layers. In this paper, the authors extend the analysis by replacing their pseudo-steady crossflow assumption with unsteady crossflow and interpret the crossflow response in terms of near- and far-boundary flow response functions for the tight zone. The inclusion of unsteady crossflow requires one additional dimensionless parameter and results in a set of governing equations that are different from, but are similar to, the equations of the dual-porosity dual-permeability model with unsteady interporosity flow.

Wijesinghe, A.M.; Kececioglu, I.

1986-01-01T23:59:59.000Z

399

Case study of landfill leachate recirculation using small-diameter vertical wells  

Science Journals Connector (OSTI)

Abstract A case study of landfill liquids addition using small diameter (5 cm) vertical wells is reported. More than 25,000 m3 of leachate was added via 134 vertical wells installed 3 m, 12 m, and 18 m deep over five years in a landfill in Florida, US. Liquids addition performance (flow rate per unit screen length per unit liquid head) ranged from 5.6 × 10?8 to 3.6 × 10?6 m3 s?1 per m screen length per m liquid head. The estimated radial hydraulic conductivity ranged from 3.5 × 10?6 to 4.2 × 10?4 m s?1. The extent of lateral moisture movement ranged from 8 to 10 m based on the responses of moisture sensors installed around vertical well clusters, and surface seeps were found to limit the achievable liquids addition rates, despite the use of concrete collars under a pressurized liquids addition scenario. The average moisture content before (51 samples) and after (272 samples) the recirculation experiments were 23% (wet weight basis) and 45% (wet weight basis), respectively, and biochemical methane potential measurements of excavated waste indicated significant (p < 0.025) decomposition.

Pradeep Jain; Jae Hac Ko; Dinesh Kumar; Jon Powell; Hwidong Kim; Lizmarie Maldonado; Timothy Townsend; Debra R. Reinhart

2014-01-01T23:59:59.000Z

400

Robust concatenated codes for the slow Rayleigh fading channel  

E-Print Network (OSTI)

In this thesis, we design a robust concatenated code for the Multiple-Input Multiple-Output (MIMO) system in the presence of slow Rayleigh fading with no channel side information at the transmitter (no CSIT) and perfect channel side information...

Hsu, Teh-Hsuan

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Viscous attenuation of a detonation wave propagating in a channel  

E-Print Network (OSTI)

Viscous attenuation of a detonation wave propagating in a channel P. Ravindran1 , R. Bellini1 , T of a detonation wave in a two-dimensional channel is simulated by an Euler and a Navier-Stokes solver. Transport arising from viscous drag. 1 Introduction The propagation of a detonation wave remains one

Texas at Arlington, University of

402

Coded Adaptive Linear Precoded Discrete Multitone Over PLC Channel  

E-Print Network (OSTI)

Coded Adaptive Linear Precoded Discrete Multitone Over PLC Channel Fahad Syed Muhammmad, Jean- DMT system is presented in the power line communication (PLC) context with a loading algorithm which spectral density constraint. Using a multipath model of PLC channel, it is shown that the proposed coded

Boyer, Edmond

403

Columbia River Channel Improvement Project Rock Removal Blasting: Monitoring Plan  

SciTech Connect

This document provides a monitoring plan to evaluate take as outlined in the National Marine Fisheries Service 2002 Biological Opinion for underwater blasting to remove rock from the navigation channel for the Columbia River Channel Improvement Project. The plan was prepared by the Pacific Northwest National Laboratory (PNNL) for the U.S. Army Corps of Engineers (USACE), Portland District.

Carlson, Thomas J.; Johnson, Gary E.

2010-01-29T23:59:59.000Z

404

Some characterizations of quantum channel in infinite Hilbert spaces  

SciTech Connect

We first show that for any quantum states ? on H and ? on K there exists a quantum channel ? such that ?(?) = ?, where H and K are finite or infinite dimensional Hilbert spaces. Then we consider some conclusions for the quantum channel ? such that ?(?) = ? and ?(I{sub H}) exists or ?(I{sub H})=I{sub K}.

Sun, Xiu-Hong [College of Mathematics and Information Science, Shaanxi Normal University, Xi'an 710062 (China) [College of Mathematics and Information Science, Shaanxi Normal University, Xi'an 710062 (China); School of Science, Xi'an University of Science and Technology, Xi'an 710054 (China); Li, Yuan, E-mail: liyuan0401@aliyun.com [College of Mathematics and Information Science, Shaanxi Normal University, Xi'an 710062 (China)] [College of Mathematics and Information Science, Shaanxi Normal University, Xi'an 710062 (China)

2014-05-15T23:59:59.000Z

405

Wood in rivers: interactions with channel morphology and processes  

E-Print Network (OSTI)

Editorial Wood in rivers: interactions with channel morphology and processes No doubt about it, wood complicates fluvial geo- morphology. It messes up nice tidy streams, compli- cates quantitative through the study of channels lacking a substantial load of wood debris (Leopold et al., 1964

Montgomery, David R.

406

Addendum to "Proof Rules for Flush Channels" Scott Stoller  

E-Print Network (OSTI)

identical messages (i.e., messages with the same contents and the same F-channel message type) along does not contain enough information to compute + (i.e., there is no definition of the "transitiveAddendum to "Proof Rules for Flush Channels" Scott Stoller Abstract-- The logic presented in [1

Stoller, Scott

407

Outage Capacity and Code Design for Dying Channels  

E-Print Network (OSTI)

. The outage exponents are also studied to reveal how fast the outage probability improves over the number of sub-channels. Besides the information-theoretical results, we also study a practical coding scheme for the dying binary erasure channel (DBEC), which...

Zeng, Meng

2012-10-19T23:59:59.000Z

408

Ion Transport Through Cell Membrane Channels Jan Gomulkiewicz1  

E-Print Network (OSTI)

1 Ion Transport Through Cell Membrane Channels Jan Gomulkiewicz1 , Jacek Mikisz2 , and Stanislaw various models of ion transport through cell membrane channels. Recent experimental data shows that sizes for the life of a cell. In particular, a fundamental phenomenon is a transport of ions through cell membranes

Miekisz, Jacek

409

Brazos Island Harbor, Texas Channel Improvement Project 25 June 2014  

E-Print Network (OSTI)

(BSC). In addition to offshore oil rig repair and shipbreaking, Brownsville is a bulk commodity port the channel and increasing the ability of the channel to accommodate offshore rigs for maintenance and repair Appropriations Act for Defense, the Global War on Terror, and Tsunami Relief, 2005 (Public Law 109-13) � Offshore

US Army Corps of Engineers

410

Cooperative Advertising in a Distribution Channel with Fairness Concerns  

E-Print Network (OSTI)

1 Cooperative Advertising in a Distribution Channel with Fairness Concerns Jing Yang Department in EJOR.) #12;2 Cooperative Advertising in a Distribution Channel with Fairness Concerns Abstract: Cooperative (co-op) advertising has been widely used in practice and employed as a strategy to improve

Xie, Jinxing

411

Multicriteria Choice of the NVG Optoelectronic Channel Elements Daniela Borissova  

E-Print Network (OSTI)

6 1 Multicriteria Choice of the NVG Optoelectronic Channel Elements Daniela Borissova Institute of technological development and mass production. The process of the NVG design involves choice of optoelectronic elements must fulfill specific requirements of the NVG optoelectronic channel and it has to meet user

Borissova, Daniela

412

Plasma Channel Diagnostic Based on Laser Centroid Oscillations  

E-Print Network (OSTI)

THz [4] to free electron laser (FEL) x-ray sources [5] and Thomson scattering gamma ray sources [6Plasma Channel Diagnostic Based on Laser Centroid Oscillations A. J. Gonsalves, K. Nakamura, C. Lin for measuring the properties of discharge-based plasma channels by monitoring the centroid location of a laser

Geddes, Cameron Guy Robinson

413

On Mitigating Covert Channels in RFID-Enabled Supply Chains  

E-Print Network (OSTI)

covert channels to surreptitiously learn sensitive information about the supply chain of a target that enables a business to monitor its supply chain in a fine-grained manner. We model the supply chain]. These covert channels can surreptitiously reveal item flow patterns, including segregation, assimilation sites

Robins, Gabriel

414

Channel assignment using block design in wireless mesh networks  

Science Journals Connector (OSTI)

With the advantages of both wireless LAN and ad hoc, wireless mesh network (WMN) has its characteristic performance in the following aspects: capacity, speed and coverability. In order to solve channel assignment problems in WMN, connectivity of the ... Keywords: Channel assignment, Connectivity, Interference, Routing, Wireless mesh network

Hejiao Huang; Xiaolu Cao; Xiaohua Jia; Xiaolong Wang

2009-05-01T23:59:59.000Z

415

Control power in perfect controlled teleportation via partially entangled channels  

E-Print Network (OSTI)

We analyze and evaluate perfect controlled teleportation via three-qubit entangled channels from the point of view of the controller. The key idea in controlled teleportation is that the teleportation is performed only with the participation of the controller. We calculate a quantitative measure of the controller's power and establish a lower bound on the control power required for controlled teleportation. We show that the maximally entangled GHZ state is a suitable channel for controlled teleportation of arbitrary single qubits - the controller's power meets the bound and the teleportation fidelity without the controller's permission is no better than the fidelity of a classical channel. We also construct partially entangled channels that exceed the bound for controlled teleportation of a restricted set of states called the equatorial states. We calculate the minimum entanglement required in these channels to exceed the bound. Moreover, we find that in these restricted controlled teleportation schemes, the partially entangled channels can outperform maximally entangled channels with respect to the controller's power. Our results provide a new perspective on controlled teleportation schemes and are of practical interest since we propose useful partially entangled channels.

Xi-Han Li; Shohini Ghose

2014-10-05T23:59:59.000Z

416

POWER EFFICIENT H.263 VIDEO TRANSMISSION OVER WIRELESS CHANNELS Xiaoan Lu, Yao Wang, and Elza Erkip  

E-Print Network (OSTI)

the power consumption of the H.263 encoder, the Reed-Solomon chan- nel encoder and the transmitter] and the Reed-Solomon (RS) channel codec. The channel is characterized by a two-state Markov model [6]. We focus methodology also H.263 Video Encoder Channel Encoder Markov Channel Channel Decoder H.263 Video Decoder INTRA

Erkip, Elza

417

Petascale Direct Numerical Simulations of Turbulent Channel Flow  

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

Petascale Petascale Direct Numerical Simulations of Turbulent Channel Flow MyoungKyu Lee mk@ices.utexas.edu Department of Mechanical Engineering University of Texas at Austin ESP Meeting May, 2013 M.K. Lee (Univ of Texas, Austin) Petascale DNS of Turbulent Channel Flow ESP Meeting May, 2013 1 / 30 Contents Project Overview Performance Optimization Early Result Conclusion M.K. Lee (Univ of Texas, Austin) Petascale DNS of Turbulent Channel Flow ESP Meeting May, 2013 2 / 30 Project Overview Project Title â—® Petascale Direct Numerical Simulations of Turbulent Channel Flow Goal â—® Expanding our understand of wall-bounded turbulence Personnel â—® P.I. : Robert Moser â—® Primary Developer : M.K.Lee â—® Software Engineering Support : Nicholas Malaya â—® Catalyst : Ramesh Balakrishnan M.K. Lee (Univ of Texas, Austin) Petascale DNS of Turbulent Channel Flow ESP Meeting May, 2013 3 / 30 Turbulent

418

Positron Beam Propagation in a Meter Long Plasma Channel  

SciTech Connect

Recent experiments and simulations have shown that positron beams propagating in plasmas can be focused and also create wakes with large accelerating gradients. For similar parameters, the wakes driven by positron beams are somewhat smaller compared to the case of an electron beam. Simulations have shown that the wake amplitude can be increased if the positron beam is propagated in a hollow plasma channel (Ref. 1). This paper, compares experimentally, the propagation and beam dynamics of a positron beam in a meter scale homogeneous plasma, to a positron beam hollow channel plasma. The results show that positron beams in hollow channels are less prone to distortions and deflections. Hollow channels were observed to guide the positron beam onto the channel axis. Beam energy loss was also observed implying the formation of a large wake amplitude. The experiments were carried out as part of the E-162 plasma wakefield experiments at SLAC.

Marsh, K.A.; Blue, B.E.; Clayton, C.E.; Joshi, C.; Mori, W.B.; /UCLA; Decker, F.-J.; Hogan, M.J.; Iverson, R.; O'Connell, C.; Raimondi, P.; Siemann, Robert H.; Walz, D.; /SLAC; Katsouleas, T.C.; Muggli, P.; /Southern California U.

2008-03-17T23:59:59.000Z

419

Effect of Channel Materials on the Behavior of Water Droplet Emerging From GDL into PEMFC Gas Channels  

E-Print Network (OSTI)

in PEMFCs to enable proper diffusion of gases into the catalyst layer as both the liquid droplets and air of the liquid water on the cathode side of the PEMFC leads to flooding of the channels and thereby hindersEffect of Channel Materials on the Behavior of Water Droplet Emerging From GDL into PEMFC Gas

Kandlikar, Satish

420

Medium-solidity Vertical Axis Wind Turbines for use in Urban Environments S. Tullis, A. Fiedler, K. McLaren, S. Ziada  

E-Print Network (OSTI)

Medium-solidity Vertical Axis Wind Turbines for use in Urban Environments S. Tullis, A. Fiedler, K Vertical axis wind turbines are currently experiencing a renewed interest in small- scale applications: vertical axis wind turbines, vibration, blade aerodynamics #12;Introduction In community wind power

Tullis, Stephen

Note: This page contains sample records for the topic "vertical cross-polar channel" 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

Numerical Analysis of the Channel Wheel Fresh Air Ventilator Under Frosting Conditions  

E-Print Network (OSTI)

channel wheel heat exchanger under different ambient conditions using the model developed. These include frost formation on the surface of the channel wheel heat exchanger, and impacts on the operational performance of the channel wheel fresh air...

Gao, B.; Dong, Z.; Cheng, Z.; Luo, E.

2006-01-01T23:59:59.000Z

422

E-Print Network 3.0 - annular channels heated Sample Search Results  

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

tests include one single-channel and a set of six parallel channels... with electric heating from three sides of the channel. The top cover is made of Lexan to permit visual......

423

Engineering aspects of biological ion channels—from biosensors to computational models for permeation  

Science Journals Connector (OSTI)

This paper presents two important engineering aspects of biological ion channels—how to build sensors out of ... channels and how to construct computational models for ion channel permeation. We describe our rece...

Vikram Krishnamurthy; Bruce Cornell

2012-02-01T23:59:59.000Z

424

Effects of Alfvenic Poloidal Flow and External Vertical Field on Plasma Position in IR-T1 Tokamak  

Science Journals Connector (OSTI)

We analyzed dynamic equilibrium properties of a large aspect ratio and low Beta tokamaks, in particular deriving a modified relation for the Shafranov shift in the presence of poloidal flow and external vertical ...

A. Salar Elahi; M. Ghoranneviss

2010-02-01T23:59:59.000Z

425

High-frequency beam steering in vertical-cavity surface-emitting lasers: optical gain and waveguiding effects  

Science Journals Connector (OSTI)

Static and dynamic characteristics of weakly index-guided vertical-cavity surface-emitting lasers in a multi-transverse-mode regime are analyzed by use of a model that takes into...

Valle, A; Rees, P; Pesquera, L; Shore, K A

1999-01-01T23:59:59.000Z

426

A Probabilistic Approach to Site-Specific, Hazard-Consistent Vertical-to-Horizontal Spectral Ratio Model  

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

A Probabilistic Approach to Site-Specific, Hazard-Consistent Vertical-to-Horizontal Spectral Ratio Model Rizzo Associates Presented at U.S. DOE Natural Phenomena Hazards Meeting October 21, 2014

427

Three-Dimensional Kinematic and Microphysical Evolution of Florida Cumulonimbus. Part III: Vertical Mass Transport, Maw Divergence, and Synthesis  

Science Journals Connector (OSTI)

A statistical technique is employed to examine the evolving properties of the ensemble small-scale variability of high-resolution radar data collected in a multicellular Florida thunderstorm. This paper examines vertical mass transport and mass ...

Sandra E. Yuter; Robert A. Houze Jr.

1995-07-01T23:59:59.000Z

428

Diurnal and intraseasonal variation of UTLS vertical wind disturbance in the equatorial region and its relation to tropospheric convective activities  

Science Journals Connector (OSTI)

Vertical wind variations in the Upper Troposphere and Lower Stratosphere (UTLS) measured by the Equatorial Atmosphere Radar (EAR) at Kototabang, Sumatra, between 2003 and 2005 but mainly in 2004, have been sta...

Toshiaki Kozu; Yasu-Masa Kodama; Yoshiaki Shibagaki…

2009-04-01T23:59:59.000Z

429

The Representation of Water Vapor and Its Dependence on Vertical Resolution in the Hadley Centre Climate Model  

Science Journals Connector (OSTI)

Simulations of the Hadley Centre Atmospheric Climate Model version 3, HadAM3, are used to investigate the impact of increasing vertical resolution on simulated climates. In particular, improvements in the representation of water vapor and ...

V. D. Pope; J. A. Pamment; D. R. Jackson; A. Slingo

2001-07-01T23:59:59.000Z

430

Long-distance seed dispersal by wind: disentangling the effects of species traits, vegetation types, vertical turbulence and wind speed  

Science Journals Connector (OSTI)

Long-distance dispersal (LDD) of plant seeds by wind is affected by functional traits of the ... , as well as by the meteorological parameters wind speed and vertical turbulence. The relative importance of ... fo...

Felix Heydel; Sarah Cunze; Markus Bernhardt-Römermann…

2014-07-01T23:59:59.000Z

431

Classification of Vertical Wind Speed Profiles Observed Above a Sloping Forest at Nighttime Using the Bulk Richardson Number  

Science Journals Connector (OSTI)

Wind speed profiles above a forest canopy relate to ... atmosphere. Many studies have reported that vertical wind speed profiles above a relatively flat forest can ... be classified by a stability index developed...

Hikaru Komatsu; Norifumi Hotta; Koichiro Kuraji…

2005-05-01T23:59:59.000Z

432

The Bulk Channel in Thermal Gauge Theories  

E-Print Network (OSTI)

We investigate the thermal correlator of the trace of the energy-momentum tensor in the SU(3) Yang-Mills theory. Our goal is to constrain the spectral function in that channel, whose low-frequency part determines the bulk viscosity. We focus on the thermal modification of the spectral function, $\\rho(\\omega,T)-\\rho(\\omega,0)$. Using the operator-product expansion we give the high-frequency behavior of this difference in terms of thermodynamic potentials. We take into account the presence of an exact delta function located at the origin, which had been missed in previous analyses. We then combine the bulk sum rule and a Monte-Carlo evaluation of the Euclidean correlator to determine the intervals of frequency where the spectral density is enhanced or depleted by thermal effects. We find evidence that the thermal spectral density is non-zero for frequencies below the scalar glueball mass $m$ and is significantly depleted for $m\\lesssim\\omega\\lesssim 3m$.

Harvey B. Meyer

2010-02-17T23:59:59.000Z

433

Statistical Hot Channel Analysis for the NBSR  

SciTech Connect

A statistical analysis of thermal limits has been carried out for the research reactor (NBSR) at the National Institute of Standards and Technology (NIST). The objective of this analysis was to update the uncertainties of the hot channel factors with respect to previous analysis for both high-enriched uranium (HEU) and low-enriched uranium (LEU) fuels. Although uncertainties in key parameters which enter into the analysis are not yet known for the LEU core, the current analysis uses reasonable approximations instead of conservative estimates based on HEU values. Cumulative distribution functions (CDFs) were obtained for critical heat flux ratio (CHFR), and onset of flow instability ratio (OFIR). As was done previously, the Sudo-Kaminaga correlation was used for CHF and the Saha-Zuber correlation was used for OFI. Results were obtained for probability levels of 90%, 95%, and 99.9%. As an example of the analysis, the results for both the existing reactor with HEU fuel and the LEU core show that CHFR would have to be above 1.39 to assure with 95% probability that there is no CHF. For the OFIR, the results show that the ratio should be above 1.40 to assure with a 95% probability that OFI is not reached.

Cuadra A.; Baek J.

2014-05-27T23:59:59.000Z

434

Muon Beam Helical Cooling Channel Design  

SciTech Connect

The Helical Cooling Channel (HCC) achieves effective ionization cooling of the six-dimensional (6d) phase space of a muon beam by means of a series of 21st century inventions. In the HCC, hydrogen-pressurized RF cavities enable high RF gradients in strong external magnetic fields. The theory of the HCC, which requires a magnetic field with solenoid, helical dipole, and helical quadrupole components, demonstrates that dispersion in the gaseous hydrogen energy absorber provides effective emittance exchange to enable longitudinal ionization cooling. The 10-year development of a practical implementation of a muon-beam cooling device has involved a series of technical innovations and experiments that imply that an HCC of less than 300 m length can cool the 6d emittance of a muon beam by six orders of magnitude. We describe the design and construction plans for a prototype HCC module based on oxygen-doped hydrogen-pressurized RF cavities that are loaded with dielectric, fed by magnetrons, and operate in a superconducting helical solenoid magnet.

Johnson, Rolland; Ankenbrandt, Charles; Flanagan, G.; Kazakevich, G.M.; Marhauser, Frank; Neubauer, Michael; Roberts, T.; Yoshikawa, C.; Derbenev, Yaroslav; Morozov, Vasiliy; Kashikhin, V.S.; Lopes, Mattlock; Tollestrup, A.; Yonehara, Katsuya; Zloblin, A.

2013-06-01T23:59:59.000Z

435

Field location & marking of no-passing zones due to vertical alignments using the global positioning system  

E-Print Network (OSTI)

alternatives need to be developed for the safe, accurate, and efficient location of no- passing zones on two-lane roadways. This thesis addresses the use of Global Positioning System (GPS) coordinates to evaluate sight distance along the vertical profile... of roadways to provide an alternative for an automated no-passing zone location system. A system was developed that processes GPS coordinates and converts them into easting and northing values, smoothes inaccurate vertical elevation data, and evaluates...

Williams, Cameron Lee

2008-10-10T23:59:59.000Z

436

The optimal unitary dilation for bosonic Gaussian channels  

E-Print Network (OSTI)

A generic quantum channel can be represented in terms of a unitary interaction between the information-carrying system and a noisy environment. Here, the minimal number of quantum Gaussian environmental modes required to provide a unitary dilation of a multi-mode bosonic Gaussian channel is analyzed both for mixed and pure environment corresponding to the Stinespring representation. In particular, for the case of pure environment we compute this quantity and present an explicit unitary dilation for arbitrary bosonic Gaussian channel. These results considerably simplify the characterization of these continuous-variable maps and can be applied to address some open issues concerning the transmission of information encoded in bosonic systems.

Caruso, Filippo; Giovannetti, Vittorio; Holevo, Alexander S

2010-01-01T23:59:59.000Z

437

Base norms and discrimination of generalized quantum channels  

SciTech Connect

We introduce and study norms in the space of hermitian matrices, obtained from base norms in positively generated subspaces. These norms are closely related to discrimination of so-called generalized quantum channels, including quantum states, channels, and networks. We further introduce generalized quantum decision problems and show that the maximal average payoffs of decision procedures are again given by these norms. We also study optimality of decision procedures, in particular, we obtain a necessary and sufficient condition under which an optimal 1-tester for discrimination of quantum channels exists, such that the input state is maximally entangled.

Jen?ová, A. [Mathematical Institute, Slovak Academy of Sciences, Štefánikova 49, Bratislava (Slovakia)] [Mathematical Institute, Slovak Academy of Sciences, Štefánikova 49, Bratislava (Slovakia)

2014-02-15T23:59:59.000Z

438

Cooperative advertising in a dual channel supply chain  

Science Journals Connector (OSTI)

The focus of this study is cooperative (co-op) advertising and the impact it has on the dual channel supply chain. We obtain equilibrium pricing and co-op advertising policies under two different competitive scenarios: Bertrand and Stackelberg equilibrium. We also compare the profit gains under these two marketing games. Based on our results, we propose the optimal strategies that system members should adopt in a dual channel competition. We also illustrate that by strategically implementing a cooperative advertising strategy under different market structures, both the system players can effectively improve their overall profits in a dual channel supply chain management.

Ruiliang Yan; Sanjoy Ghose; Amit Bhatnagar

2006-01-01T23:59:59.000Z

439

Tapered Six-Dimensional Cooling Channel for a Muon Collider  

SciTech Connect

A high-luminosity muon collider requires a reduction of the six-dimensional emittance of the captured muon beam by a factor of {approx} 10{sup 6}. Most of this cooling takes place in a dispersive channel that simultaneously reduces all six phase space dimensions. We describe a tapered 6D cooling channel that should meet the requirements of a muon collider. The parameters of the channel are given and preliminary simulations are shown of the expected performance. A complete scheme for cooling a muon beam sufficiently for use in a muon collider has been previously described. This scheme uses separate 6D ionization cooling channels for the two signs of the particle charge. In each, a channel first reduces the emittance of a train of muon bunches until they can be injected into a bunch-merging system. The single muon bunches, one of each sign, are then sent through a second tapered 6D cooling channel where the transverse emittance is reduced as much as possible and the longitudinal emittance is cooled to a value below that needed for the collider. The beam can then be recombined and sent through a final cooling channel using high-field solenoids that cools the transverse emittance to the required values for the collider while allowing the longitudinal emittance to grow. This paper mainly describes the design of the 6D cooling channel before bunch merging. Cooling efficiency is conveniently measured using a parameter Q, which is defined as the rate of change of 6D emittance divided by the rate of change of the number of muons in the beam. In a given lattice Q starts off small due to losses from initial matching, then rises to a large value (Q {approx} 15 is typical for the channels discussed here), and finally falls as the emittance of the beam approaches its equilibrium value. The idea for the 6D cooling channel described here originated with the RFOFO cooling ring. This design evolved into a helical channel referred to as a 'Guggenheim' in order to avoid serious problems with injection of large emittance beams. We found that good cooling efficiency requires that the channel be tapered. In that case when Q starts to fall off the lattice is modified to reduce the beta function. This ensures that the beam emittance is always large compared with the equilibrium emittance.

Palmer, R.B.; Fernow, R.C.

2011-03-28T23:59:59.000Z

440

Elimination of information leakage in quantum information channels  

E-Print Network (OSTI)

In all lossy communication channels realized to date, information is inevitably leaked to a potential eavesdropper. Here we present a communication protocol that does not allow for any information leakage to a potential eavesdropper. By encoding information into a restricted Gaussian alphabet of squeezed states we show, both theoretically and experimentally, that the Holevo information between the eavesdropper and the intended recipient can be exactly zero in a purely lossy channel while minimized in a noisy channel with a finite number of samples. This result is of fundamental interest but might also have practical implications in extending the distance of secure quantum key distribution.

Christian S. Jacobsen; Lars S. Madsen; Vladyslav C. Usenko; Radim Filip; Ulrik L. Andersen

2014-08-20T23:59:59.000Z

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


441

Turbine component cooling channel mesh with intersection chambers  

DOE Patents (OSTI)

A mesh (35) of cooling channels (35A, 35B) with an array of cooling channel intersections (42) in a wall (21, 22) of a turbine component. A mixing chamber (42A-C) at each intersection is wider (W1, W2)) than a width (W) of each of the cooling channels connected to the mixing chamber. The mixing chamber promotes swirl, and slows the coolant for more efficient and uniform cooling. A series of cooling meshes (M1, M2) may be separated by mixing manifolds (44), which may have film cooling holes (46) and/or coolant refresher holes (48).

Lee, Ching-Pang; Marra, John J

2014-05-06T23:59:59.000Z

442

Measuring mobile banking customers' channel attribute preferences in service consumption  

Science Journals Connector (OSTI)

The purpose of the paper was to measure mobile banking customers' channel attribute preferences in two different banking services, namely request for account balance service and bill paying. An Internet survey was implemented and conjoint analysis was used. In addition, the respondents were clustered into homogenous segments on the basis of their channel attribute preferences. The findings indicate slight differences between the services in respondents' channel attribute preferences while individual respondents' preferences vary widely. The results provide important information for service providers' marketing campaigns and communication activities and device manufacturers' aims to develop different kinds of devices for different market segments.

Tommi Laukkanen

2007-01-01T23:59:59.000Z

443

E-Print Network 3.0 - arbitrary traffic channels Sample Search...  

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

Computer Technologies and Information Sciences 28 Model-Based Covert Timing Channels: Automated Modeling and Evasion Summary: . Keywords: covert timing channels, traffic...

444

E-Print Network 3.0 - atp-dependent potassium channels Sample...  

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

andrecovery. Recently, ATP-dependent potassium channels havebeen identified by direct patch... and Partial Purification of the Glibenclamide-sensitive, ATP-dependent K' Channel...

445

Modeling Tidal Stream Energy Extraction and its Effects on Transport Processes in a Tidal Channel and Bay System Using a Three-dimensional Coastal Ocean Model  

SciTech Connect

This paper presents a numerical modeling study for simulating in-stream tidal energy extraction and assessing its effects on the hydrodynamics and transport processes in a tidal channel and bay system connecting to coastal ocean. A marine and hydrokinetic (MHK) module was implemented in a three-dimensional (3-D) coastal ocean model using the momentum sink approach. The MHK model was validated with the analytical solutions for tidal channels under one-dimensional (1-D) conditions. Model simulations were further carried out to compare the momentum sink approach with the quadratic bottom friction approach. The effects of 3-D simulations on the vertical velocity profile, maximum extractable energy, and volume flux reduction across the channel were investigated through a series of numerical experiments. 3-D model results indicate that the volume flux reduction at the maximum extractable power predicted by the 1-D analytical model or two-dimensional (2-D) depth-averaged numerical model may be overestimated. Maximum extractable energy strongly depends on the turbine hub height in the water column, and which reaches a maximum when turbine hub height is located at mid-water depth. Far-field effects of tidal turbines on the flushing time of the tidal bay were also investigated. Model results demonstrate that tidal energy extraction has a greater effect on the flushing time than volume flux reduction, which could negatively affect the biogeochemical processes in estuarine and coastal waters that support primary productivity and higher forms of marine life.

Yang, Zhaoqing; Wang, Taiping; Copping, Andrea E.

2013-02-28T23:59:59.000Z

446

Synthesis of vertically aligned carbon nanofibers for interfacing with live systems  

SciTech Connect

The ability to synthesize carbon nanofibers with a high degree of control over their geometry, location, and structure via catalytic plasma-enhanced chemical vapor deposition has expanded the possibility of new applications. The nanoscale dimensions and high aspect ratio of vertically aligned carbon nanofibers (VACNFs), along with favorable physical and chemical characteristics, has provided a nanostructured material with properties that are well-suited for interfacing with live cells and tissues. This review surveys the aspects of synthesis, integration, and functionalization of VACNFs, followed by examples of how VACNFs have been used to interface with live systems for a variety of advanced nanoscale biological applications.

Melechko, Anatoli Vasilievich [ORNL; Desikan, Ramya [ORNL; McKnight, Timothy E [ORNL; Klein, Kate L [ORNL; Rack, P. D. [University of Tennessee, Knoxville (UTK)

2009-01-01T23:59:59.000Z

447

The SuperB Silicon Vertex Tracker and 3D vertical integration  

E-Print Network (OSTI)

The construction of the SuperB high luminosity collider was approved and funded by the Italian government in 2011. The performance specifications set by the target luminosity of this machine (> 10^36 cm^-2 s^-1) ask for the development of a Silicon Vertex Tracker with high resolution, high tolerance to radiation and excellent capability of handling high data rates. This paper reviews the R&D activity that is being carried out for the SuperB SVT. Special emphasis is given to the option of exploiting 3D vertical integration to build advanced pixel sensors and readout electronics that are able to comply with SuperB vertexing requirements.

Re, Valerio

2011-01-01T23:59:59.000Z

448

High performance vertical tunneling diodes using graphene/hexagonal boron nitride/graphene hetero-structure  

SciTech Connect

A tunneling rectifier prepared from vertically stacked two-dimensional (2D) materials composed of chemically doped graphene electrodes and hexagonal boron nitride (h-BN) tunneling barrier was demonstrated. The asymmetric chemical doping to graphene with linear dispersion property induces rectifying behavior effectively, by facilitating Fowler-Nordheim tunneling at high forward biases. It results in excellent diode performances of a hetero-structured graphene/h-BN/graphene tunneling diode, with an asymmetric factor exceeding 1000, a nonlinearity of ?40, and a peak sensitivity of ?12?V{sup ?1}, which are superior to contending metal-insulator-metal diodes, showing great potential for future flexible and transparent electronic devices.

Hwan Lee, Seung; Lee, Jia; Ho Ra, Chang; Liu, Xiaochi; Hwang, Euyheon [Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Department of Nano Science and Technology, SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Sup Choi, Min [Department of Nano Science and Technology, SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Center for Human Interface Nano Technology (HINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Hee Choi, Jun [Frontier Research Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd., Yongin, Gyeonggi-do 446-711 (Korea, Republic of); Zhong, Jianqiang; Chen, Wei [Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore); Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore); Jong Yoo, Won, E-mail: yoowj@skku.edu [Samsung-SKKU Graphene Center (SSGC), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Department of Nano Science and Technology, SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Center for Human Interface Nano Technology (HINT), Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746 (Korea, Republic of)

2014-02-03T23:59:59.000Z

449

Control of light polarization using optically spin-injected vertical external cavity surface emitting lasers  

SciTech Connect

We fabricated and characterized an optically pumped (100)-oriented InGaAs/GaAsP multiple quantum well Vertical External Cavity Surface Emitting Laser (VECSEL). The structure is designed to allow the integration of a Metal-Tunnel-Junction ferromagnetic spin-injector for future electrical injection. We report here the control at room temperature of the electromagnetic field polarization using optical spin injection in the active medium of the VECSEL. The switching between two highly circular polarization states had been demonstrated using an M-shaped extended cavity in multi-modes lasing. This result witnesses an efficient spin-injection in the active medium of the LASER.

Frougier, J., E-mail: julien.frougier@thalesgroup.com; Jaffrès, H.; Deranlot, C.; George, J.-M. [Unité Mixte de Physique CNRS-Thales and Université Paris Sud 11, 1 av. Fresnel, 91767 Palaiseau (France)] [Unité Mixte de Physique CNRS-Thales and Université Paris Sud 11, 1 av. Fresnel, 91767 Palaiseau (France); Baili, G.; Dolfi, D. [Thales Research and Technology, 1 av. Fresnel, 91767 Palaiseau (France)] [Thales Research and Technology, 1 av. Fresnel, 91767 Palaiseau (France); Alouini, M. [Institut de Physique de Rennes, 263 Avenue Général Leclerc, 35042 Rennes (France)] [Institut de Physique de Rennes, 263 Avenue Général Leclerc, 35042 Rennes (France); Sagnes, I. [Laboratoire de Photonique et de Nanostructures, Route de Nozay, 91460 Marcoussis (France)] [Laboratoire de Photonique et de Nanostructures, Route de Nozay, 91460 Marcoussis (France); Garnache, A. [Institut d'électronique du Sud CNRS UMR5214, Université Montpellier 2 Place Eugene Bataillon, 34095 Montpellier (France)] [Institut d'électronique du Sud CNRS UMR5214, Université Montpellier 2 Place Eugene Bataillon, 34095 Montpellier (France)

2013-12-16T23:59:59.000Z

450

High Seastate Container Transfer System/Auxillary Crane Ship vertical relative motion analysis  

E-Print Network (OSTI)

conditions. Kim and Fang [4] also investigated the effect of elastic links, transverse clearance and wave heading on the vertical and lateral motions between two identically moored ships. Their study used a linear strip method with restraint of surging... the restoring force coefficient of a and b due to the mth mode of motion in the kth direction. F indicates the wave-exciting force on a in R tfie kth direction containing the interaction effect. In this problem, surge motion is ommitted, as the ships...

Ottens, Michael James

2012-06-07T23:59:59.000Z

451

Aerosynthesis: Growths of Vertically Aligned Carbon Nanofibers with Air DC Plasma  

SciTech Connect

Vertically aligned carbon nanofibers (VACNF) have been synthesized in a mixture of acetone and air using catalytic DC plasma enhanced chemical vapor deposition. Typically, ammonia or hydrogen is used as etchant gas in the mixture to remove carbon that otherwise passivates the catalyst surface and impedes growth. Our demonstration of using air as the etchant gas opens up a possibility that ion etching could be sufficient to maintain the catalytic activity state during synthesis. It also demonstrates the path toward growing VACNFs in open atmosphere.

Kodumagulla, A [North Carolina State University; Varanasi, V [North Carolina State University; Pearce, Ryan [North Carolina State University; Wu, W-C [North Carolina State University; Hensley, Dale K [ORNL; Tracy, Joseph B [North Carolina State University; McKnight, Timothy E [ORNL; Melechko, Anatoli [North Carolina State University

2014-01-01T23:59:59.000Z

452

The transfer of heat and mass to a vertical plate under frosting conditions  

E-Print Network (OSTI)

EFRictEer aF . ~A i~, TRAJJJ'SFyR JJYC TR T~E- i I I CALCULA TEP- ? -- e EXPERIVEA' TA L ? A REFERS TCJ SAQPL E CQLCCI'( A TICi I 4 4 l$4p rrrJ-i obt~inei& rem~i?ed . Ln the vicinity of 1. 7 St&a/ft '-'-"-h&. ( ' ee g i-"UI'. 1 ' j 'jvri' j "', h...THE TRAESFPIR OF HEAT . 'ND NASH 10 A VERTICAL PLATE UNDER FROSTING CONDITIONS A Thesis Louis Joseph Poth, Jr. Submitted to the Graduate School of the Agricultural and Nechanioal College of Texas in partial fulfili ment of the requirements...

Poth, Louis Joseph

1960-01-01T23:59:59.000Z

453

Efficient vertical coupling of photodiodes to InGaAsP rib waveguides  

SciTech Connect

We demonstrate vertical integration of InGaAs mesa photodiodes with InGaAsP rib waveguides employing an intermediate optical impedance matching layer. The diode length necessary for 90% light absorption at 1.52 {mu}m wavelength was 42 {mu}m, a threefold reduction in diode length with respect to previous work employing similar waveguides without a matching layer. The quantum efficiency was observed to be almost independent of the optical wavelength and polarization. The influence of spatial transient intensity redistribution effects on these devices is investigated in detail.

Deri, R.J.; Doldissen, W.; Hawkins, R.J.; Bhat, R.; Soole, J.B.D.; Schiavone, L.M.; Seto, M.; Andreadakis, N.; Silberberg, Y.; Koza, M.A. (Bellcore, 331 Newman Springs Road, Red Bank, New Jersey 07701-7040 (USA))

1991-06-17T23:59:59.000Z

454

Property:Number of channels | Open Energy Information  

Open Energy Info (EERE)

channels channels Jump to: navigation, search Property Name Number of channels Property Type String Pages using the property "Number of channels" Showing 25 pages using this property. (previous 25) (next 25) A Alden Large Flume + Designed as needed + Alden Small Flume + Designed as needed + Alden Tow Tank + Designed as needed + Alden Wave Basin + Designed as needed + C Chase Tow Tank + 8 + Conte Large Flume + 12 + Conte Small Flume + 12 + D Davidson Laboratory Tow Tank + 16 + DeFrees Flume 1 + 64+ + DeFrees Flume 2 + 64+ + DeFrees Flume 3 + 64+ + DeFrees Flume 4 + 64+ + DeFrees Large Wave Basin + 64+ + DeFrees Small Wave Basin + 64+ + H Haynes Tow Tank + 40 + Haynes Wave Basin + 40 + Hinsdale Wave Basin 1 + Up to 192 + Hinsdale Wave Basin 2 + Up to 192 +

455

Property:Channel/Tunnel/Flume | Open Energy Information  

Open Energy Info (EERE)

Channel/Tunnel/Flume Channel/Tunnel/Flume Jump to: navigation, search Property Name Channel/Tunnel/Flume Property Type String Pages using the property "Channel/Tunnel/Flume" Showing 25 pages using this property. (previous 25) (next 25) 1 1.5-ft Wave Flume Facility + Yes + 10-ft Wave Flume Facility + Yes + 11-ft Wave Flume Facility + None + 2 2-ft Flume Facility + Yes + 3 3-ft Wave Flume Facility + None + 5 5-ft Wave Flume Facility + Yes + 6 6-ft Wave Flume Facility + Yes + A Alden Large Flume + Yes + Alden Small Flume + Yes + Alden Tow Tank + None + Alden Wave Basin + None + B Breakwater Research Facility + None + Bucknell Hydraulic Flume + Yes + C Carderock 2-ft Variable Pressure Cavitation Water Tunnel + Yes + Carderock 3-ft Variable Pressure Cavitation Water Tunnel + Yes +

456

Methods of Using Alpha Channeling Together with Transformer Recharging |  

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

Methods of Using Alpha Channeling Together with Transformer Recharging Methods of Using Alpha Channeling Together with Transformer Recharging A tokamak current can be sustained using rf waves for transformer recharging at low density and high-Z with high efficiency if the resistivity is kept high enough during the radio frequency recharging stage. At the same time, operation in the hot ion mode via alpha channeling increases the effective fusion reactivity. The two separate inventions can be made to work synergistically. Specifically, by operating the tokamak in a low-density recharge phase, the lower hybrid wave penetrates the plasma more effectively. High reactivity is obtained by operation in the hot ion mode through the alpha channeling technique. Then, by using a high temperature relaxation stage, not only is the plasma current sustained

457

Free online training and HUD videos on DVU Learning Channel!  

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

SlideRule and Government Learning Videos (offered by HUD) are now available on the DVU Learning Channel.  SlideRule offers free college-level courses from universities around the world available...

458

Heat transfer in channel flow of a micropolar fluid  

Science Journals Connector (OSTI)

The study of heat transfer in channel flow has been done by previous authors for Newtonian and elastico-viscous fluids. It is the aim of the present ... the temperature profile for flow of a micropolar fluid in a...

Renuka Rajagopalan; K. S. Bhatnagar

1969-10-01T23:59:59.000Z

459

Selective activation of mechanosensitive ion channels using magnetic particles  

Science Journals Connector (OSTI)

...Keele University School of Medicine, Thornburrow Drive, Hartshill...Science and Technology in Medicine, Keele University School...channel|TREK-1|targeting|nanotechnology| 1. Introduction TREK-1...Science and Technology in Medicine, Keele University School...

2008-01-01T23:59:59.000Z

460

MIMO capacity convergence in frequency-selective channels  

E-Print Network (OSTI)

The dependence of multi-antenna capacity on bandwidth is characterized empirically for narrowband, wideband and ultrawideband indoor channels using spatial and polar arrays. It is shown that both the mean and the outage ...

Malik, Wasim Q.

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


461

Membrane Ion Channels and Ionic Hydration Energies [Abstract Only  

Science Journals Connector (OSTI)

25 November 1980 research-article Membrane Ion Channels and Ionic Hydration Energies [Abstract Only] D. T. Edmonds The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings...

1980-01-01T23:59:59.000Z

462

Coincidence landscapes for three-channel linear optical networks  

Science Journals Connector (OSTI)

We use permutation-group methods plus SU(3) group-theoretic methods to determine the action of a three-channel passive optical interferometer on controllably delayed single-photon pulse inputs to each channel. Permutation-group techniques allow us to relate directly expressions for rates and, in particular, investigate symmetries in the coincidence landscape. These techniques extend the traditional Hong-Ou-Mandel effect analysis for two-channel interferometry to valleys and plateaus in three-channel interferometry. Our group-theoretic approach is intuitively appealing because the calculus of Wigner D functions partially accounts for permutational symmetries and directly reveals the connections among D functions, partial distinguishability, and immanants.

Hubert de Guise; Si-Hui Tan; Isaac P. Poulin; Barry C. Sanders

2014-06-23T23:59:59.000Z

463

Baroclinic Instability of the Faroe Bank Channel Overflow  

Science Journals Connector (OSTI)

The generation mechanism of mesoscale eddies in the Faroe Bank Channel (FBC) overflow region and their spatiotemporal characteristics are examined using the high-resolution regional Massachusetts Institute of Technology general circulation model (...

Chuncheng Guo; Mehmet Ilicak; Ilker Fer; Elin Darelius; Mats Bentsen

2014-10-01T23:59:59.000Z

464

Channel erosion due to subsurface flow Braunen Smith,1  

E-Print Network (OSTI)

Channel erosion due to subsurface flow Braunen Smith,1 Arshad Kudrolli,1 Alexander E. Lobkovsky,2, and D. H. Rothman, J. Fluid Mech. 503, 357 2004 . 2 A. E. Lobkovsky, B. Smith, A. Kudrolli, D. C. Mohrig

Kudrolli, Arshad

465

Queueing Behavior over a Gilbert-Elliott Packet Erasure Channel  

E-Print Network (OSTI)

. Exploiting this mathematical structure, the probability of the queue exceeding a certain threshold can be obtained. Most previous contributions in this area treat code-rate selection, channel erasure probability and network congestion separately...

Cai, Yi

2012-02-14T23:59:59.000Z

466

Bank Customers' Channel Preferences for Requesting Account Balances  

Science Journals Connector (OSTI)

Electronic applications in banking have enhanced customers' ability to control the balances and latest transactions of their bank accounts. Many banks today offer this service also via mobile channel further improving customers' capability to use the ...

Tommi Laukkanen

2007-01-01T23:59:59.000Z

467

Multiple-user quantum information theory for optical communication channels  

E-Print Network (OSTI)

Research in the past decade has established capacity theorems for point-to-point bosonic channels with additive thermal noise, under the presumption of a conjecture on the minimum output von Neumann entropy. In the first ...

Guha, Saikat, 1980-

2008-01-01T23:59:59.000Z

468

Optimal Channel Probing and Transmission Scheduling for Opportunistic Spectrum Access  

E-Print Network (OSTI)

In this study, we consider optimal opportunistic spectrum access (OSA) policies for a transmitter in a multichannel wireless system, where a channel can be in one of multiple states. In such systems, the transmitter typically ...

Chang, Nicholas B.

469

Initial steps in the opening of a Shaker potassium channel  

Science Journals Connector (OSTI)

...thus moving 16 elementary charges (e0 ) per channel across the electric field. This estimate is...through the membrane electric field...omega} initial resistance when filled with...iii) series resistance compensation...

Toshinori Hoshi; Clay M. Armstrong

2012-01-01T23:59:59.000Z

470

Vortex development behind a finite porous obstruction in a channel  

E-Print Network (OSTI)

This experimental study describes the turbulent wake behind a two-dimensional porous obstruction, consisting of a circular array of cylinders. The cylinders extend from the channel bed through the water surface, mimicking ...

Zong, Lijun

471

Capacity of a Nonlinear Optical Channel With Finite Memory  

Science Journals Connector (OSTI)

The channel capacity of a nonlinear, dispersive fiber-optic link is revisited. To this end, the popular Gaussian noise (GN) model is extended with a parameter to account for the finite...

Agrell, Erik; Alvarado, Alex; Durisi, Giuseppe; Karlsson, Magnus

2014-01-01T23:59:59.000Z

472

On Space–Frequency Correlation of UWB MIMO Channels  

E-Print Network (OSTI)

Conventional multiple-input-multiple-output (MIMO) channel correlation models focus on describing the complex amplitude correlation of resolvable multipath components (MPCs). It has recently been shown that the time-of-arrival ...

Hong, Xuemin

473

Tier I ecological evaluation for phase III channel improvements to the John. F. Baldwin ship channel  

SciTech Connect

To assist the US Army Corps of Engineers (USACE) in determing whether the material from proposed dredging of the John F. Baldwin Ship Channel (JFBSC) is suitable for unrestricted, unconfined open-ocean disposal, Battelle/Marine Sciences Laboratory (MSL) prepared this report. Based on these findings, sediments that would be removed during Phase III improvements to the JFBSC fail to meet the three suitability criteria for open-ocean disposal. Firstly, fine-grained sediments comprise a significant fraction of the bottom material in some areas of the channel, and this material is not exposed to high current or wave energy. Dredged material from the JFBSC is not being proposed for beach nourishment; therefore the second criterion is not met. JFBSC sediments do not meet the third criterion because, although they may be substantially similar to substrates at several of the proposed disposal sites, they are from an area that historically has experienced loading of contaminants, which toxicology studies have shown have the potential to result in acute toxicity or significant bioaccumulation.

Bienert, R.W.; Shreffler, D.K.; Word, J.Q.; Kohn, N.P. [Battelle/Marine Sciences Lab., Sequim, WA (United States)

1994-05-01T23:59:59.000Z

474

Alpha Channeling in Rotating Plasma with Stationary Waves  

SciTech Connect

An extension of the alpha channeling effect to supersonically rotating mirrors shows that the rotation itself can be driven using alpha particle energy. Alpha channeling uses radiofrequency waves to remove alpha particles collisionlessly at low energy. We show that stationary magnetic fields with high n? can be used for this purpose, and simulations show that a large fraction of the alpha energy can be converted to rotation energy.

A. Fetterman and N.J. Fisch

2010-02-15T23:59:59.000Z

475

Winter feeding of channel catfish fingerlings in Texas  

E-Print Network (OSTI)

WINTER FEEDING OF CHANNEL CATFISH FINGERLINGS IN TEXAS A Thesis by SCOTT ARMSTRONG DAVIS Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degre'e of MASTER OF SCIENCE May 1983... Major Subject; Wildlife and Fisheries Sciences WINTER FEEDING OF CHANNEL CATFISH FINGERLINGS IN TEXAS A Thesis SCOTT ARMSTRONG DAVIS Approved as to style and content by: Robert Stickney (Chairman of Committee) Edwin Robinson (Member) 'allace...

Davis, Scott Armstrong

1983-01-01T23:59:59.000Z

476

The Brinkman model for thermosolutal convection in a vertical annular porous layer  

SciTech Connect

Double-diffusive natural convection in porous media, i.e. flows generated by buoyancy due to simultaneous temperature and concentration gradients, has received considerable attention in recent years. Interest in this phenomenon has been motivated by such diverse engineering problems as the migration of moisture contained in fibrous insulation, grain storage, the contaminated transport in saturated soil, the underground disposal of nuclear wastes, drying processes, etc. Here, numerical study is carried out on double-diffusive natural convection within a vertical circular porous annulus. Motions are driven by the externally applied constant temperature and concentration differences imposed across the vertical walls of the enclosure. In the formulation of the problem, use is made of the Brinkman extended Darcy model which allows the no-slip boundary condition on a solid wall, to be satisfied. The flow is assumed to be laminar and two dimensional. The density variation is taken into account by the Boussinesq approximation. The control-volume approach is used for solving the governing equations. Solutions for the flow fields, temperature and concentration distributions and Nusselt, {ovr Nu}{sub i} and Sherwood, {ovr Sh}{sub i} numbers are obtained in terms of the governing parameters of the problem. The effect of both the Darcy number, Da, and the radius ratio, {kappa}, or {ovr Nu}{sub i} and {ovr Sh}{sub i} is found to be significant. Results for a pure viscous fluid and a Carcy (densely packed) porous medium emerge from the present model is limiting cases.

Bennacer, R.; Beji, H.; Duval, R.; Vasseur, P.

2000-01-01T23:59:59.000Z

477

Simulation of winds as seen by a rotating vertical axis wind turbine blade  

SciTech Connect

The objective of this report is to provide turbulent wind analyses relevant to the design and testing of Vertical Axis Wind Turbines (VAWT). A technique was developed for utilizing high-speed turbulence wind data from a line of seven anemometers at a single level to simulate the wind seen by a rotating VAWT blade. Twelve data cases, representing a range of wind speeds and stability classes, were selected from the large volume of data available from the Clayton, New Mexico, Vertical Plane Array (VPA) project. Simulations were run of the rotationally sampled wind speed relative to the earth, as well as the tangential and radial wind speeds, which are relative to the rotating wind turbine blade. Spectral analysis is used to compare and assess wind simulations from the different wind regimes, as well as from alternate wind measurement techniques. The variance in the wind speed at frequencies at or above the blade rotation rate is computed for all cases, and is used to quantitatively compare the VAWT simulations with Horizontal Axis Wind Turbine (HAWT) simulations. Qualitative comparisons are also made with direct wind measurements from a VAWT blade.

George, R.L.

1984-02-01T23:59:59.000Z

478

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

SciTech Connect

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

479

Charge transport properties in CdZnTe detectors grown by the vertical Bridgman technique  

SciTech Connect

Presently, a great amount of effort is being devoted to the development of CdTe and CdZnTe (CZT) detectors for a large variety of applications such as medical, industrial, and space research. We present the spectroscopic properties of some CZT crystals grown by the standard vertical Bridgman method and by the boron oxide encapsulated vertical Bridgman method, which has been recently implemented at IMEM-CNR (Parma, Italy). In this technique, the crystal is grown in an open quartz crucible fully encapsulated by a thin layer of liquid boron oxide. This method prevents contact between the crystal and the crucible, thereby allowing larger single grains with a lower dislocation density to be obtained. Several mono-electrode detectors were realized, with each having two planar gold contacts. The samples are characterized by an active area of about 7 mm x 7 mm and thicknesses ranging from 1 to 2 mm. The charge transport properties of the detectors have been studied by mobility-lifetime ({mu} x {tau}) product measurements, carried out at the European Synchrotron Radiation Facility (Grenoble, France) in the planar transverse field configuration, where the impinging beam direction is orthogonal to the collecting electric field. We have performed several fine scans between the electrodes with a beam spot of 10 {mu}m x 10 {mu}m at various energies from 60 to 400 keV. In this work, we present the test results in terms of the ({mu} x {tau}) product of both charge carriers.

Auricchio, N.; Caroli, E. [INAF/IASF-Bologna, Bologna, 40129 (Italy); Marchini, L.; Zappettini, A. [IMEM-CNR, Parma, 43100 (Italy); Abbene, L. [DIFI, University of Palermo, Palermo, 90128 (Italy); Honkimaki, V. [European Synchrotron Radiation Facility, Grenoble, 38000 (France)

2011-12-15T23:59:59.000Z

480

Unexpected vertical wind speed profiles in the boundary layer over the southern North Sea  

Science Journals Connector (OSTI)

Abstract Shallow atmospheric internal boundary layers over the southern part of the North Sea are common. Analysis of one year of meteorological data from the FINO1 research platform in the German Bight reveals that vertical wind speed profiles frequently do not conform to the expected modified logarithmic profile of Monin–Obukhov similarity theory. The wind profiles are mostly characterized by local maxima or kinks within the first 100 m over the sea surface. The data reveals the most frequent occurrence of a single maximum, but multiple maxima are often present, and there are sometimes even reversed profiles with the wind speed decreasing with height. The expected modified logarithmic profile occurs for a minority of cases. The evidence suggests the frequent presence of internal boundary layers that propagate from coastal land masses that surround the North Sea. A census of vertical wind speed profiles is presented that shows how different inflection states are linked with wind speed and atmospheric stability. The kinks are most prevalent in the upper part of the measurement range near the 100 m hub height of modern offshore the wind turbines, so that internal boundary layers represent a possible concern for the offshore wind energy industry in the North Sea region.

Anthony J. Kettle

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "vertical cross-polar channel" from the National Library of EnergyBeta (NLEBeta).
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481

Metal-modified and vertically aligned carbon nanotube sensors array for landfill gas  

Science Journals Connector (OSTI)

Vertically aligned carbon nanotube (CNT) layers were synthesized on Fe-coated low-cost alumina substrates using radio-frequency plasma enhanced chemical vapour deposition (RF-PECVD) technology. A miniaturized CNT-based gas sensor array was developed for monitoring landfill gas (LFG) at a temperature of 150??C. The sensor array was composed of 4 sensing elements with unmodified CNT, and CNT loaded with 5?nm nominally thick sputtered nanoclusters of platinum (Pt), ruthenium (Ru) and silver (Ag). Chemical analysis of multicomponent gas mixtures constituted of CO2, CH4, H2, NH3, CO and NO2 has been performed by the array sensor responses and pattern recognition based on principal component analysis (PCA). The PCA results demonstrate that the metal-decorated and vertically aligned CNT sensor array is able to discriminate the NO2 presence in the multicomponent mixture LFG. The NO2 gas detection in the mixture LFG was proved to be very sensitive, e.g.: the CNT:Ru sensor shows a relative change in the resistance of 1.50% and 0.55% for NO2 concentrations of 3.3?ppm and 330?ppb dispersed in the LFG, respectively, with a wide NO2 gas concentration range measured from 0.33 to 3.3?ppm, at the sensor temperature of 150??C. The morphology and structure of the CNT networks have been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. A forest-like nanostructure of vertically aligned CNT bundles in the multi-walled form appeared with a height of about 10 ?m and a single-tube diameter varying in the range of 5?35?nm. The intensity ratio of the Raman spectroscopy D-peak and G-peak indicates the presence of disorder and defects in the CNT networks. The size of the metal (Pt, Ru, Ag) nanoclusters decorating the CNT top surface varies in the range of 5?50?nm. Functional characterization based on electrical charge transfer sensing mechanisms in the metal-modified CNT-chemoresistor array demonstrates high sensitivity by providing minimal sub-ppm level detection, e.g., download up to 100?ppb NO2, at the sensor temperature of 150??C. The gas sensitivity of the CNT sensor array depends on operating temperature, showing a lower optimal temperature of maximum sensitivity for the metal-decorated CNT sensors compared to unmodified CNT sensors. Results indicate that the recovery mechanisms in the CNT chemiresistors can be altered by a rapid heating pulse from room temperature to about 110??C. A comparison of the NO2 gas sensitivity for the chemiresistors based on disorderly networked CNTs and vertically aligned CNTs is also reported. Cross-sensitivity towards relative humidity of the CNT sensors array is investigated. Finally, the sensing properties of the metal-decorated and vertically aligned CNT sensor arrays are promising to monitor gas events in the LFG for practical applications with low power consumption and moderate sensor temperature.

M Penza; R Rossi; M Alvisi; E Serra

2010-01-01T23:59:59.000Z

482

Tsallis Entropy Based Velocity Distribution in Open Channel Flows  

E-Print Network (OSTI)

............................................................. 94 32 Dimensionless velocity distribution and parameter M ............................... 96 33 um/ umax versus various M ........................................................................... 99 34 Upper Tiber River basin with location... velocity distribution with different m ... 68 9 Computation of M, ?1 and ?V based on um and umax measured on the Po river (Italy) for different verticals at Pontelagoscuro gauged section during flood event that occurred on February 2, 1985...

Luo, Hao

2010-07-14T23:59:59.000Z

483

A better understanding of a Uinta Basin channelized analog reservoir through geostatistics and reservoir simulation  

E-Print Network (OSTI)

the behavior of channelized oil and gas reservoirs. Results show that the number of channels in the model can have a significant effect on performance. The rock properties in these channels and the channel paths are also important factors that determine...

Robbana, Enis

2012-06-07T23:59:59.000Z

484

A Non-cooperative Differential Game Model for Frequency Reuse Based Channel Allocation in Satellite Networks  

Science Journals Connector (OSTI)

In this paper, channel resource allocation problem for LEO mobile satellite systems is investigated and a new dynamic channel resource allocation scheme is proposed based on differential game. Optimal channel resource allocated to each satellite beams ... Keywords: Differential game, Dynamic channel allocation, LEO, Mobile satellite systems

Haitao Xu, Xianwei Zhou

2014-11-01T23:59:59.000Z

485

An experimental investigation of heat transfer in narrow, rectangular cooling channels with pin-fins  

E-Print Network (OSTI)

][Ro]/[Ro] = 0.12). Heat transfer in a stationary pin-fin channel can be enhanced up to 3.8 times that of a smooth channel. Rotation enhances the heat transferred from the pin-fin channels 1.5 times that of the stationary pin-fin channels. Overall, rotation...

Wright, Lesley Mae

2012-06-07T23:59:59.000Z

486

Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation  

E-Print Network (OSTI)

Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation Fatih to multi-channel operation, including Green's function diffusive conduction solution and crosstalk conduction based optoelectronic switches that accommodate >100 optical channels (with 2,000mm-2 channel

Miller, David A. B.

487

Vertical coherence and forward scattering from the sea surface and the relation to the directional wave spectrum  

Science Journals Connector (OSTI)

Results of an experiment to measure vertical spatial coherence from acoustic paths interacting once with the sea surface but at perpendicular azimuth angles are presented. The measurements were part of the Shallow Water 2006 program that took place off the coast of New Jersey in August 2006. An acoustic source frequency range 6–20?kHz was deployed at depth 40?m and signals were recorded on a 1.4?m long vertical line array centered at depth 25?m and positioned at range 200?m. The vertical array consisted of four omni-directional hydrophones and vertical coherences were computed between pairs of these hydrophones. Measurements were made over four source–receiver bearing angles separated by 90 ° during which sea surface conditions remained stable and characterized by a root-mean-square wave height of 0.17?m and a mixture of swell and wind waves. Vertical coherences show a statistically significant difference depending on source–receiver bearing when the acoustic frequency is less than about 12?kHz with results tending to fade at higher frequencies. This paper presents field observations and comparisons of these observations with two modeling approaches one based on bistatic forward scattering and the other on a rough surface parabolic wave equation utilizing synthetic sea surfaces.

Peter H. Dahl; David R. Dall'Osto

2013-01-01T23:59:59.000Z

488

Aligned vertical fractures, HTI reservoir symmetry, and Thomsenseismic anisotropy parameters for polar media  

SciTech Connect

Sayers and Kachanov (1991) defined crack-influence parameters that are shown to be directly related to Thomsen (1986) weak-anisotropy seismic parameters for fractured reservoirs when the crack/fracture density is small enough. These results are then applied to the problem of seismic wave propagation in polar (i.e., non-isotropic) reservoirs having HTI seismic wave symmetry due to the presence of aligned vertical fractures and resulting in azimuthal seismic wave symmetry at the earth's surface. The approach presented suggests one method of inverting for fracture density from wave-speed data. It is also observed that the angular location {theta}{sub ex} of the extreme value (peak or trough) of the quasi-SV-wave speed for VTI occurs at an angle determined approximately by the formula tan{sup 2} {theta}{sub ex} {approx_equal} tan {theta}{sub m} = [(c{sub 33} - c{sub 44})/(c{sub 11}-c{sub 44})]{sup 1/2}, where {theta}{sub m} is an angle determined directly (as shown) from the c{sub ij} elastic stiffnesses, whenever these are known from either quasi-static or seismic wave measurements. Alternatively, {theta}{sub ex} is given in terms of the Thomsen seismic anisotropy parameters by tan {theta}{sub ex} {approx_equal} ([v{sub p}{sup 2}(0)-v{sub s}{sup 2}(0)]/[(1 + 2{epsilon})v{sub p}{sup 2}(0)-v{sub s}{sup 2}(0)]){sup 1/4}, where {epsilon} = (c{sub 11}-c{sub 33})/2c{sub 33}, v{sub p}{sup 2}(0) = c{sub 33}/{rho}, and v{sub s}{sup 2}(0) = c{sub 44}/{rho}, with {rho} being the background inertial mass density. The axis of symmetry is always treated here as the x{sub 3}-axis for either VTI symmetry (due, for example, to horizontal cracks), or HTI symmetry (due to aligned vertical cracks). Then the meaning of the stiffnesses is derived from the fracture analysis in the same way for VTI and HTI media, but for HTI the wave speeds relative to the earth's surface are shifted by 90{sup o} in the plane perpendicular to the aligned vertical fractures. Skempton's (1954) coefficient is used as a general means of quantifying the effects of fluids inside the fractures. Explicit formulas for Thomsen's parameters are also obtained for either drained or undrained fractures resulting in either VTI or HTI symmetry of the reservoir.

Berryman, James G.

2007-12-12T23:59:59.000Z

489

Entanglement-assisted capacity of a quantum channel and the reverse Shannon theorem  

E-Print Network (OSTI)

We show that the entanglement-assisted classical capacity of a noisy quantum channel is given by an expression parallel to that for the capacity of a purely classical channel: i.e., the maximum, over channel inputs $\\rho$, of the entropy of the channel input plus the entropy of the channel output minus their joint entropy, the latter being defined as the entropy of an entangled purification of $\\rho$ after half of it has passed through the channel. We calculate entanglement-assisted capacities for the amplitude damping channel and for bosonic channels in the presence of attenuation and Gaussian noise. We discuss how many independent parameters are required to completely characterize the asymptotic behavior of a general quantum channel, alone or in the presence of ancillary resources such as prior entanglement. In the classical analog of entanglement assisted communication---communication over a discrete memoryless channel (DMC) between parties who share prior random information---we show that one parameter is...

Bennett, C H; Smolin, J A; Thapliyal, A V; Bennett, Charles H.; Shor, Peter W.; Smolin, John A.; Thapliyal, Ashish V.

2001-01-01T23:59:59.000Z

490

Visualization study of bubble behavior in a subcooled flow boiling channel under rolling motion  

Science Journals Connector (OSTI)

Abstract Boiling heat transfer equipment in a vessel can be affected by the additional force which is generated by the rolling, swing and heaving motion of the vessel. Bubble behavior is very important for the research of boiling phenomenon. Bubble behavior under rolling motion condition is experimentally studied by using a high speed camera. The experiment is conducted in a subcooled flow boiling rectangular channel, and the cross section size of the channel is 2 mm × 40 mm. Two types of bubbles with large discrepancies in sliding and condensation behaviors can be observed in the captured images. The first type bubbles disappear quickly after generation and the slide distance is only a few times of bubble maximum diameter, while the second type bubbles can survive a longer time after leaving the nucleation site and slide for a long distance with the flowing fluid. Bubble characteristics under rolling motion are separately studied for different type bubbles based on the above reasons. The results show that the lifetime, maximum diameter, nucleation frequency and sliding velocity of the first type bubble are periodically fluctuated and the period is same with the rolling motion. The fluctuation intensity of the bubble lifetime and maximum diameter can be enhanced by the increase of the rolling amplitude. The peak value of bubble lifetime, maximum diameter, and nucleation frequency appears when the rolling platform plate rolls to the maximum positive angle, while opposite trend can be observed in the variation of bubble sliding velocity. In view of the characteristics of the second type bubbles, lifetime and maximum diameter are not measured. And the variation of nucleation frequency and sliding velocity of the second type bubbles under the effect of rolling motion is same with the first type bubbles. Furthermore, the effects of additional force, variation of local pressure and flow rate oscillation on bubble behavior are analyzed. The results indicate that the fluctuations of the bubble parameters can be generated by the variation of local pressure caused by rolling motion even no influential flow rate fluctuation occurs. The effect of the acceleration variation vertical to the heated surface on bubble behavior is unclear and need more researches in the future work.

Shaodan Li; Sichao Tan; Chao Xu; Puzhen Gao

2015-01-01T23:59:59.000Z

491

ATP-Sensitive Potassium Channels Exhibit Variance in the Number of Open Channels below the Limit Predicted for Identical and Independent Gating  

E-Print Network (OSTI)

In small cells containing small numbers of ion channels, noise due to stochastic channel opening and closing can introduce a substantial level of variability into the cell's membrane potential. Negatively cooperative ...

Choi, Kee-Hyun

492

Growth of vertical-cavity surface emitting lasers by metalorganic vapor phase epitaxy  

SciTech Connect

We present growth and characterization of visible and near-infrared vertical-cavity surface emitting lasers (VCSELs) grown by metalorganic vapor phase epitaxy. Discussions on the growth issue of VCSEL materials include growth rate and composition control using an {ital in}{ital situ} normal-incidence reflectometer, comprehensive p- and n-type doping study in AlGaAs by CCl{sub 4} and Si{sub 2}H{sub 6} over the entire composition range, and optimization of ultra-high material uniformity. We also demonstrate our recent achievements of all-AlGaAs VCSELs which include the first room-temperature continuous- wave demonstration of 700-nm red VCSELs and high-efficiency and low- threshold voltage 850-nm VCSELs.

Hou, H.Q.; Hammons, B.E.; Crawford, M.H.; Lear, K.L.; Choquette, K.D.

1996-10-01T23:59:59.000Z

493

Vertically aligned carbon nanofiber as nano-neuron interface for monitoring neural function  

SciTech Connect

Neural chips, which are capable of simultaneous, multi-site neural recording and stimulation, have been used to detect and modulate neural activity for almost 30 years. As a neural interface, neural chips provide dynamic functional information for neural decoding and neural control. By improving sensitivity and spatial resolution, nano-scale electrodes may revolutionize neural detection and modulation at cellular and molecular levels as nano-neuron interfaces. We developed a carbon-nanofiber neural chip with lithographically defined arrays of vertically aligned carbon nanofiber electrodes and demonstrated its capability of both stimulating and monitoring electrophysiological signals from brain tissues in vitro and monitoring dynamic information of neuroplasticity. This novel nano-neuron interface can potentially serve as a precise, informative, biocompatible, and dual-mode neural interface for monitoring of both neuroelectrical and neurochemical activity at the single cell level and even inside the cell.

Ericson, Milton Nance [ORNL; McKnight, Timothy E [ORNL; Melechko, Anatoli Vasilievich [ORNL; Simpson, Michael L [ORNL; Morrison, Barclay [ORNL; Yu, Zhe [Columbia University

2012-01-01T23:59:59.000Z

494

Stable polarization self-modulation in vertical-cavity surface-emitting lasers  

SciTech Connect

The characteristics of polarization self-modulation in a vertical-cavity surface-emitting laser (VCSEL) were studied for frequencies up to {approx}9 GHz both experimentally and theoretically. Polarization self-modulation was obtained by rotating the linearly polarized output of the VCSEL by 90{degree} and reinjecting it into the laser. Experimentally we simultaneously recorded time traces, optical and radio-frequency spectra. We found for increasing modulation frequencies that the output characteristics changed from square-wave to sinusoidal and the VCSEL system assumed new polarization eigenstates that are different from the free-running VCSEL eigenstates. We modeled polarization self-modulation as an interband process and found a good qualitative agreement between our experimental and numerical results. {copyright} {ital 1998 American Institute of Physics.}

Li, H.; Hohl, A.; Gavrielides, A. [Air Force Research Laboratory DELO, Nonlinear Optics Group, Phillips Research Site, 3550 Aberdeen Avenue, Kirtland Air Force Base, New Mexico 87117-5776 (United States)] [Air Force Research Laboratory DELO, Nonlinear Optics Group, Phillips Research Site, 3550 Aberdeen Avenue, Kirtland Air Force Base, New Mexico 87117-5776 (United States); Hou, H.; Choquette, K.D. [Center of Compound Semiconductor Science and Technology, Sandia National Laboratories MS0603, Albuquerque, New Mexico 87185-1603 (United States)] [Center of Compound Semiconductor Science and Technology, Sandia National Laboratories MS0603, Albuquerque, New Mexico 87185-1603 (United States)

1998-05-01T23:59:59.000Z

495

Vertical Drop of the Naval SNF Long Waste Package On Unyielding Surface  

SciTech Connect

The purpose of this calculation is to determine the structural response of a Naval SNF (Spent Nuclear Fuel) Long Waste Package (WP) subjected to 2 m-vertical drop on unyielding surface (US). The scope of this document is limited to reporting the calculation results in terms of maximum stress intensities. This calculation is associated with the waste package design; calculation is performed by the Waste Package Design group. AP-3.12Q, Revision 0, ICN 0, Calculations, is used to perform the calculation and develop the document. The finite element calculation is performed by using the commercially available ANSYS Version (V) 5.4 finite element code. The result of this calculation is provided in terms of maximum stress intensities.

S. Mastilovic

2006-07-21T23:59:59.000Z

496

Vertically aligned gas-insulated transmission line having particle traps at the inner conductor  

DOE Patents (OSTI)

Gas insulated electrical apparatus having first and second conductors separated by an insulating support within an insulating gas environment, and particle traps disposed along the surface of the high potential conductor for trapping and inactivating foreign particles which may be present within the insulating gas medium. Several embodiments of the invention were developed which are particularly suited for vertically aligned gas insulated transmission lines. The particle traps are grooves or cavities formed into the walls of the tubular inner conductor, without extending into the hollow portion of the conductor. In other embodiments, the traps are appendages or insert flanges extending from the inner conductor, with the insulator supports contacting the appendages instead of the inner conductor.

Dale, Steinar J. (Monroeville, PA)

1984-01-01T23:59:59.000Z

497

Excitation of Intra-bunch Vertical Motion in the SPS - Implications for Feedback Control of Ecloud and TMCI Instabilities  

SciTech Connect

Electron cloud (ecloud) and transverse mode coupled-bunch instabilities (TMCI) limit the bunch intensity in the CERN SPS. This paper presents experimental measurements in the SPS of single-bunch motion driven by a GHz bandwidth vertical excitation system. The final goal is to quantify the change in internal bunch dynamics as instability thresholds are approached, and quantify the frequencies of internal modes as ecloud effects become significant. Initially, we have been able to drive the beam and view its motion. We show the excitation of barycentric, head-tail and higher vertical modes at different bunch intensities. The beam motion is analyzed in the time domain, via animated presentations of the sampled vertical signals, and in the frequency domain, via spectrograms showing the modal frequencies vs. time. The demonstration of the excitation of selected internal modes is a significant step in the development of the feedback control techniques.

Cesaratto, J.M.; Fox, J.D.; Pivi, M.T.; Rivetta, C.H.; Turgut, O.; Uemura, S.; /SLAC; Hofle, W.; Wehrle, U.; /CERN; ,

2012-06-01T23:59:59.000Z

498

Heat transfer characteristics of impinging steady and synthetic jets over vertical flat surface  

Science Journals Connector (OSTI)

Abstract In this paper, heat transfer characteristics of single-slot impinging steady and synthetic jets on a 25.4-mm × 25.4-mm vertical surface were experimentally investigated. The experiments were conducted with a fixed nozzle width of 1 mm. For the steady jet study, the parameters varied in the testing were nozzle length (4 mm, 8 mm, 12 mm, 15 mm), Reynolds (Re) number (100–2500), and dimensionless nozzle-to-plate spacing (H/Dh = 5, 10, 15, 20). Correlations for average Nusselt (Nu) number were developed to accurately describe experimental data. The heat transfer coefficient over a vertical surface increases with increasing Re number. For a small nozzle-to-plate spacing (H/Dh = 5), the average Nu number is not only a function of the Re number, but also a function of nozzle length. For large nozzle-to-plate spacing (H/Dh ? 10) and a nozzle length larger than 8 mm, the heat transfer coefficient is insensitive to H/Dh and nozzle length. An 8-mm × 1-mm synthetic jet was studied by varying the applied voltage (20–100 V), frequency (200–600 Hz), and dimensionless nozzle-to-plate spacing (H/Dh = 5, 10, 15, 20). Compared to the steady jet, the synthetic jet exhibited up to a 40% increase in the heat transfer coefficient. The dynamic Re number was introduced to correlate heat transfer characteristics between synthetic jets and steady jets. Using the dynamic Re number collapses the synthetic and steady jet data into a single Nu number curve.

Xin He; Jason A. Lustbader; Mehmet Arik; Rajdeep Sharma

2015-01-01T23:59:59.000Z

499

Effect of rolling motion on critical heat flux for subcooled flow boiling in vertical tube  

SciTech Connect

This paper presents defining characteristics of the critical heat flux (CHF) for the boiling of R-134a in vertical tube operation under rolling motion in marine reactor. It is important to predict CHF of marine reactor having the rolling motion in order to increase the safety of the reactor. Marine Reactor Moving Simulator (MARMS) tests are conducted to measure the critical heat flux using R-134a flowing upward in a uniformly heated vertical tube under rolling motion. MARMS was rotated by motor and mechanical power transmission gear. The CHF tests were performed in a 9.5 mm I.D. test section with heated length of 1 m. Mass fluxes range from 285 to 1300 kg m{sup -2}s{sup -1}, inlet subcooling from 3 to 38 deg. C and outlet pressures from 13 to 24 bar. Amplitudes of rolling range from 15 to 40 degrees and periods from 6 to 12 sec. To convert the test conditions of CHF test using R-134a in water, Katto's fluid-to-fluid modeling was used in present investigation. A CHF correlation is presented which accounts for the effects of pressure, mass flux, inlet subcooling and rolling angle over all conditions tested. Unlike existing transient CHF experiments, CHF ratio of certain mass flux and pressure are different in rolling motion. For the mass fluxes below 500 kg m{sup -2}s{sup -1} at 13, 16 (region of relative low mass flux), CHF ratio was decreased but was increased above that mass flux (region of relative high mass flux). Moreover, CHF tend to enhance in entire mass flux at 24 bar. (authors)

Hwang, J. S.; Park, I. U.; Park, M. Y.; Park, G. C. [Dept. of Energy Systems Engineering, Seoul National Univ., 599 Gwanak-Ro, Gwanak-Gu, Seoul, 151-744 (Korea, Republic of)

2012-07-01T23:59:59.000Z

500

The Origin of Subdwarf B Star (I): the Formation Channels  

E-Print Network (OSTI)

Subdwarf B (sdB) stars (and related sdO/sdOB stars) are believed to be helium core-burning objects with very thin hydrogen-rich envelopes. In recent years it has become increasingly clear from observational surveys that a large fraction of these objects are members of binary systems. To better understand their formation, we here present the results of a detailed investigation of the three main binary evolution channels that can lead to the formation of sdB stars: the common envelope (CE) ejection channel, the stable Roche lobe overflow (RLOF) channel and the double helium white dwarfs (WDs) merger channel. We obtained the conditions for the formation of sdB stars from each of these channels using detailed stellar and binary evolution calculations where we modelled the detailed evolution of sdB stars and carried out simplified binary population synthesis simulations. The observed period distribution of sdB stars in compact binaries strongly constrains the CE ejection parameters. We also present the distribution of sdB stars in the $T_{\\rm eff}$ - $\\log g$ diagram, the Hertzsprung-Russell diagram and the distribution of mass functions.

Zhanwen Han; Philipp Podsiadlowski; Pierre L. F. Maxted; Tom R. Marsh; Natasha Ivanova

2002-06-09T23:59:59.000Z