Sample records for fixed tilt ground-mount

  1. Department of Veterans Affairs, FONSI - Ground mounted solar...

    Office of Environmental Management (EM)

    Ground mounted solar photovoltaic power at San Joaquin National Cemetery Department of Veterans Affairs, FONSI - Ground mounted solar photovoltaic power at San Joaquin National...

  2. Environmental impacts of large-scale grid-connected ground-mounted PV installations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Environmental impacts of large-scale grid-connected ground-mounted PV installations Antoine Beylota-scale ground-mounted PV installations by considering a life-cycle approach. The methodology is based. Mobile PV installations with dual-axis trackers show the largest impact potential on ecosystem quality

  3. WestSolarGroundMount City of Phoenix/ASU West

    E-Print Network [OSTI]

    Fletcher WestSolarGroundMount Lawn Field City of Phoenix/ASU West South Fields Community Park Parking Lot 12 North Zone #12; 2E · Credit Union · Parking & Transit Services · Devils Den · Jamba Juice · P.O.D. Market

  4. The Tilt Intonation Model 

    E-Print Network [OSTI]

    Taylor, Paul

    The tilt intonation model facilitates automatic analysis and synthesis of intonation. The analysis algorithm detects intonational events in F0 contours and parameterises them in terms of the continuously varying parameters. ...

  5. Self-Optimization of Antenna Tilt and Pilot Power for Dedicated Channels

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Self-Optimization of Antenna Tilt and Pilot Power for Dedicated Channels Abstract-- In Radio Access Networks (RAN), fixed configurations result in poor network efficiency. This sub- optimal performance present a framework for a self-optimizing RAN, which adapts Antenna Tilt and Pilot Power according

  6. Tilted-mirror semiconductor lasers

    SciTech Connect (OSTI)

    Salzman, J.; Lang, R.; Margalit, S.; Yariv, A.

    1985-07-01T23:59:59.000Z

    Broad-area GaAs heterostructure lasers with a tilted mirror were demonstrated for the first time, with the tilted mirror fabricated by etching. These lasers operate in a smooth and stable single lateral mode with a high degree of spatial coherence. The suppression of filamentation manifests itself in a high degree of reproducibility in the near-field pattern.

  7. Method to fabricate a tilted logpile photonic crystal

    DOE Patents [OSTI]

    Williams, John D. (Albuquerque, NM); Sweatt, William C. (Albuquerque, NM)

    2010-10-26T23:59:59.000Z

    A method to fabricate a tilted logpile photonic crystal requires only two lithographic exposures and does not require mask repositioning between exposures. The mask and photoresist-coated substrate are spaced a fixed and constant distance apart using a spacer and the stack is clamped together. The stack is then tilted at a crystallographic symmetry angle (e.g., 45 degrees) relative to the X-ray beam and rotated about the surface normal until the mask is aligned with the X-ray beam. The stack is then rotated in plane by a small stitching angle and exposed to the X-ray beam to pattern the first half of the structure. The stack is then rotated by 180.degree. about the normal and a second exposure patterns the remaining half of the structure. The method can use commercially available DXRL scanner technology and LIGA processes to fabricate large-area, high-quality tilted logpile photonic crystals.

  8. Fluid observers and tilting cosmology

    E-Print Network [OSTI]

    A. A. Coley; S. Hervik; W. C. Lim

    2006-05-24T23:59:59.000Z

    We study perfect fluid cosmological models with a constant equation of state parameter $\\gamma$ in which there are two naturally defined time-like congruences, a geometrically defined geodesic congruence and a non-geodesic fluid congruence. We establish an appropriate set of boost formulae relating the physical variables, and consequently the observed quantities, in the two frames. We study expanding spatially homogeneous tilted perfect fluid models, with an emphasis on future evolution with extreme tilt. We show that for ultra-radiative equations of state (i.e., $\\gamma>4/3$), generically the tilt becomes extreme at late times and the fluid observers will reach infinite expansion within a finite proper time and experience a singularity similar to that of the big rip. In addition, we show that for sub-radiative equations of state (i.e., $\\gamma < 4/3$), the tilt can become extreme at late times and give rise to an effective quintessential equation of state. To establish the connection with phantom cosmology and quintessence, we calculate the effective equation of state in the models under consideration and we determine the future asymptotic behaviour of the tilting models in the fluid frame variables using the boost formulae. We also discuss spatially inhomogeneous models and tilting spatially homogeneous models with a cosmological constant.

  9. TILT STABILITY, UNIFORM QUADRATIC GROWTH, AND STRONG ...

    E-Print Network [OSTI]

    2012-05-08T23:59:59.000Z

    Tilt stability, variational analysis, subdifferentials, quadratic growth, strong metric .... Some convex analysis. ..... Example 3.5 (Failure of subdifferential continuity).

  10. Notes 16. Analysis of tilting pad bearings

    E-Print Network [OSTI]

    San Andres, Luis

    2010-01-01T23:59:59.000Z

    NOTES 16. STATIC AND DYNAMIC FORCED PERFORMANCE OF TILTING PAD BEARINGS: ANALYSIS INCLUDING PIVOT STIFFNESS Dr. Luis San Andr?s Mast-Childs Professor August 2010 SUMMARY Work in progress ? still a lot of be done Introduction... Figure 1 shows a tilting pad journal bearing comprised of four pads. Each pad tilts about its pivot making a hydrodynamic film that generates a pressure reacting to the static load applied on the spinning journal. This type of bearing is typically...

  11. Large optics inspection, tilting, and washing stand

    DOE Patents [OSTI]

    Ayers, Marion Jay; Ayers, Shannon Lee

    2012-10-09T23:59:59.000Z

    A large optics stand provides a risk free means of safely tilting large optics with ease and a method of safely tilting large optics with ease. The optics are supported in the horizontal position by pads. In the vertical plane the optics are supported by saddles that evenly distribute the optics weight over a large area.

  12. Large optics inspection, tilting, and washing stand

    DOE Patents [OSTI]

    Ayers, Marion Jay (Brentwood, CA); Ayers, Shannon Lee (Brentwood, CA)

    2010-08-24T23:59:59.000Z

    A large optics stand provides a risk free means of safely tilting large optics with ease and a method of safely tilting large optics with ease. The optics are supported in the horizontal position by pads. In the vertical plane the optics are supported by saddles that evenly distribute the optics weight over a large area.

  13. Combined Scanning Transmission Electron Microscopy Tilt- and Focal Series

    SciTech Connect (OSTI)

    Dahmen, Tim [German Research Center for Artificial Intelligence (DFKI), Germany] [German Research Center for Artificial Intelligence (DFKI), Germany; Baudoin, Jean-Pierre G [ORNL] [ORNL; Lupini, Andrew R [ORNL] [ORNL; Kubel, Christian [Karlsruhe Institute of Technology, Leopoldshafen, Germany] [Karlsruhe Institute of Technology, Leopoldshafen, Germany; Slusallek, Phillip [German Research Center for Artificial Intelligence (DFKI), Germany] [German Research Center for Artificial Intelligence (DFKI), Germany; De Jonge, Niels [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    In this study, a combined tilt- and focal series is proposed as a new recording scheme for high-angle annular dark-field scanning transmission electron microscopy (STEM) tomography. Three-dimensional (3D) data were acquired by mechanically tilting the specimen, and recording a through-focal series at each tilt direction. The sample was a whole-mount macrophage cell with embedded gold nanoparticles. The tilt focal algebraic reconstruction technique (TF-ART) is introduced as a new algorithm to reconstruct tomograms from such combined tilt- and focal series. The feasibility of TF-ART was demonstrated by 3D reconstruction of the experimental 3D data. The results were compared with a conventional STEM tilt series of a similar sample. The combined tilt- and focal series led to smaller missing wedge artifacts, and a higher axial resolution than obtained for the STEM tilt series, thus improving on one of the main issues of tilt series-based electron tomography.

  14. Numerical relativity simulations of thick accretion disks around tilted Kerr black holes

    E-Print Network [OSTI]

    Vassilios Mewes; José A. Font; Filippo Galeazzi; Pedro J. Montero; Nikolaos Stergioulas

    2015-06-12T23:59:59.000Z

    In this work we present 3D numerical relativity simulations of thick accretion disks around {\\it tilted} Kerr black holes. We investigate the evolution of three different initial disk models with a range of initial black hole spin magnitudes and tilt angles. For all the disk-to-black hole mass ratios considered ($0.044-0.16$) we observe significant black hole precession and nutation during the evolution. This indicates that for such mass ratios, neglecting the self-gravity of the disks by evolving them in a fixed background black hole spacetime is not justified. We find that the two more massive models are unstable against the Papaloizou-Pringle (PP) instability and that those PP-unstable models remain unstable for all initial spins and tilt angles considered, showing that the development of the instability is a very robust feature of such PP-unstable disks. The tilt between the black hole spin and the disk is strongly modulated during the growth of the PP instability, causing a partial global realignment of black hole spin and disk angular momentum in the most massive model with constant specific angular momentum $l$. For the model with non-constant $l$-profile we observe a long-lived $m=1$ non-axisymmetric structure which shows strong oscillations of the tilt angle in the inner regions of the disk. We attribute this effect to the development of Kozai-Lidov oscillations. Our simulations also confirm earlier findings that the development of the PP instability causes the long-term emission of large amplitude gravitational waves, predominantly for the $l=m=2$ multipole mode. The imprint of the BH precession on the gravitational waves from tilted BH-torus systems remains an interesting open issue that would require significantly longer simulations than those presented in this work.

  15. Tilt assembly for tracking solar collector assembly

    DOE Patents [OSTI]

    Almy, Charles; Peurach, John; Sandler, Reuben

    2012-01-24T23:59:59.000Z

    A tilt assembly is used with a solar collector assembly of the type comprising a frame, supporting a solar collector, for movement about a tilt axis by pivoting a drive element between first and second orientations. The tilt assembly comprises a drive element coupler connected to the drive element and a driver, the driver comprising a drive frame, a drive arm and a drive arm driver. The drive arm is mounted to the drive frame for pivotal movement about a drive arm axis. Movement on the drive arm mimics movement of the drive element. Drive element couplers can extend in opposite directions from the outer portion of the drive arm, whereby the assembly can be used between adjacent solar collector assemblies in a row of solar collector assemblies.

  16. Department of Veterans Affairs, FONSI - Ground mounted solar photovoltaic

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E T A * S H I E L D * A LFederal Employee Federalpower at

  17. The cost of noise reduction in commercial tilt rotor aircraft

    E-Print Network [OSTI]

    Faulkner, Henry B.

    1974-01-01T23:59:59.000Z

    The relationship between direct operating cost and departure noise annoyance was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt rotor aircraft designs to meet various ...

  18. Ram pressure stripping of tilted galaxies

    E-Print Network [OSTI]

    Jachym, P; Palous, J; Combes, F

    2009-01-01T23:59:59.000Z

    Ram pressure stripping of galaxies in clusters can yield gas deficient disks. Previous numerical simulations based on various approaches suggested that, except for near edge-on disk orientations, the amount of stripping depends very little on the inclination angle. Following our previous study of face-on stripping, we extend the set of parameters with the disk tilt angle and explore in detail the effects of the ram pressure on the interstellar content (ISM) of tilted galaxies that orbit in various environments of clusters, with compact or extended distributions of the intra-cluster medium (ICM). We further study how results of numerical simulations could be estimated analytically. A grid of numerical simulations with varying parameters is produced using the tree/SPH code GADGET with a modified method for calculating the ISM-ICM interaction. These SPH calculations extend the set of existing results obtained from different codes using various numerical techniques. The simulations confirm the general trend of le...

  19. Prediction of tilted capillary barrier performance

    SciTech Connect (OSTI)

    Webb, S.W.; McCord, J.T.; Dwyer, S.F.

    1997-04-01T23:59:59.000Z

    Capillary barriers, consisting of tilted fine-over-coarse layers under unsaturated conditions, have been suggested as landfill covers to divert water infiltration away from sensitive underground regions, especially for arid and semi-arid regions. The Hydrological Evaluation of Landfill Performance (HELP) computer code is an evaluation tool for landfill covers used by designers and regulators. HELP is a quasi-two-dimensional model that predicts moisture movement into and through the underground soil and waste layers. Processes modeled within HELP include precipitation, runoff, evapotranspiration, unsaturated vertical drainage, saturated lateral drainage, and leakage through liners. Unfortunately, multidimensional unsaturated flow phenomena that are necessary for evaluating tilted capillary barriers are not included in HELP. Differences between the predictions of the HELP and those from a multidimensional unsaturated flow code are presented to assess the two different approaches. Comparisons are presented for the landfill covers including capillary barrier configurations at the Alternative Landfill Cover Demonstration (ALCD) being conducted at Sandia.

  20. Stabilizing windings for tilting and shifting modes

    DOE Patents [OSTI]

    Jardin, Stephen C. (Princeton, NJ); Christensen, Uffe R. (Princeton, NJ)

    1984-01-01T23:59:59.000Z

    This invention relates to passive conducting loops for stabilizing a plasma ring against unstable tilting and/or shifting modes. To this end, for example, plasma ring in a spheromak is stabilized by a set of four figure-8 shaped loops having one pair on one side of the plasma and one pair on the other side with each pair comprising two loops whose axes are transverse to each other.

  1. Fix-Up Loan

    Broader source: Energy.gov [DOE]

    The Minnesota Housing Finance Agency's (MHFA) Fix-up Loan provides low-interest financing for energy conservation and other basic improvements to residential properties. Home improvement loans...

  2. Local Uniqueness for the Fixed Energy Fixed Angle Inverse Problem ...

    E-Print Network [OSTI]

    Abstract. We prove local uniqueness for the inverse problem in obstacle scattering at a fixed energy and fixed incident angle. We consider the inverse problem of ...

  3. Analysis and synthesis of intonation using the tilt model 

    E-Print Network [OSTI]

    Taylor, Paul

    This paper introduces the Tilt intonational model and describes how this model can be used to automatically analyze and synthesize intonation. In the model, intonation is represented as a linear sequence of events, which ...

  4. Geometric Model of a Narrow Tilting CAR using Robotics formalism

    E-Print Network [OSTI]

    Boyer, Edmond

    of an Electrical narrow tilting car instead of a large gasoline car should dramatically decrease traffic congestion are the terminal links. Each body Cj is connected to its antecedent Ci (i=a (j)) with a joint that represents

  5. A Neural Network Model of Visual Tilt Aftereffects

    E-Print Network [OSTI]

    1997-01-01T23:59:59.000Z

    RF-LISSOM, a self-organizing model of laterally connected orientation maps in the primary visual cortex, was used to study the psychological phenomenon known as the tilt aftereffect. The same self-organizing processes that are responsible for the long-term development of the map and its lateral connections are shown to result in tilt aftereffects over short time scales in the adult. The model allows observing large numbers of neurons and connections simultaneously, making it possible to relate higher-level phenomenato low-level events, which is difficult to do experimentally. The results give computational support for the idea that direct tilt aftereffects arise from adaptive lateral interactions between feature detectors, as has long been surmised. They also suggest that indirect effects could result from the conservation of synaptic resourcesduring this process. The model thus provides a unified computational explanation of self-organization and both direct and indirect tilt aftereff...

  6. TILT POUR TRIALS AND ANALYSIS Bob Bryant1

    E-Print Network [OSTI]

    Beckermann, Christoph

    TILT POUR TRIALS AND ANALYSIS Bob Bryant1 , Kent D. Carlson2 , Shouzhu Ou2 , Christoph Beckermann2 reduce inclusion severity, compared to standard techniques. Bryant, R., Carlson, K.D., Ou, S

  7. Future Fixed Target Facilities

    SciTech Connect (OSTI)

    Melnitchouk, Wolodymyr

    2009-01-01T23:59:59.000Z

    We review plans for future fixed target lepton- and hadron-scattering facilities, including the 12 GeV upgraded CEBAF accelerator at Jefferson Lab, neutrino beam facilities at Fermilab, and the antiproton PANDA facility at FAIR. We also briefly review recent theoretical developments which will aid in the interpretation of the data expected from these facilities.

  8. Laser Guide Star Adaptive Optics without Tip-tilt

    E-Print Network [OSTI]

    R. Davies; S. Rabien; C. Lidman; M. Le Louarn; M. Kasper; N. M. Forster Schreiber; V. Roccatagliata; N. Ageorges; P. Amico; C. Dumas; F. Mannucci

    2008-01-24T23:59:59.000Z

    Adaptive optics (AO) systems allow a telescope to reach its diffraction limit at near infrared wavelengths. But to achieve this, a bright natural guide star (NGS) is needed for the wavefront sensing, severely limiting the fraction of the sky over which AO can be used. To some extent this can be overcome with a laser guide star (LGS). While the laser can be pointed anywhere in the sky, one still needs to have a natural star, albeit fainter, reasonably close to correct the image motion (tip-tilt) to which laser guide stars are insensitive. There are in fact many astronomical targets without suitable tip-tilt stars, but for which the enhanced resolution obtained with the Laser Guide Star Facility (LGSF) would still be very beneficial. This article explores what adaptive optics performance one might expect if one dispenses with the tip-tilt star, and in what situations this mode of observing might be needed.

  9. Tilted accretion discs in cataclysmic variables: tidal instabilities and superhumps

    E-Print Network [OSTI]

    J. R. Murray; P. J. Armitage

    1998-09-10T23:59:59.000Z

    We investigate the growth of tidal instabilities in accretion discs in a binary star potential, using three dimensional numerical simulations. As expected from analytic work, the disc is prone to an eccentric instability provided that it is large enough to extend to the 3:1 resonance. The eccentric disc leads to positive superhumps in the light curve. It has been proposed that negative superhumps might arise from a tilted disc, but we find no evidence that the companion gravitational tilt instability can grow fast enough in a fluid disc to create a measurable inclination. The origin of negative superhumps in the light curves of cataclysmic variables remains a puzzle.

  10. The Fix Issue 11

    E-Print Network [OSTI]

    Multiple Contributors

    1992-01-01T23:59:59.000Z

    -Anne Hartwick "Untangled" by Monica Rose Kiesel "Muderward Tag Version I" "Muderward Tag Version II" "Gift from the Sea" by B.N. Fish "Dum Vivimus, Vivamus" by Jennet Morgan "Sands of Time" by Leah Starsky "Foolish Dreams, Futile Hopes" by Elizabeth Lowry... "Distant Snores" by Paula Smith "Exile to Freedom, Chapter 3" by Martha J. Bonds "A Place in the Sun, Part I" by Lynna Bright SVE THE FIX is $5 per issue or $20 for a 3 issue subscription. Order from Carol Davis, 5 Paca Place, Rockville, MD 20852...

  11. Rotordynamic and thermal analyses of compliant flexure pivot tilting pad gas bearings

    E-Print Network [OSTI]

    Sim, Kyu-Ho

    2009-05-15T23:59:59.000Z

    Rotordynamic and thermal analyses of compliant flexure pivot tilting pad gas bearings were performed. First, compliant flexure pivot tilting pad gas bearings with pad radial compliance (CFTPBs) were introduced and designed for high-speed oil...

  12. The cost of noise reduction for departure and arrival operations of commercial tilt rotor aircraft

    E-Print Network [OSTI]

    Faulkner, Henry B.

    1976-01-01T23:59:59.000Z

    The relationship between direct operating cost (DOC) and noise annoyance due to a departure and an arrival operation was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt ...

  13. Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows

    E-Print Network [OSTI]

    Novikov, Alexei

    Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows-time perfect mixing with a finite energy constraint on the stirring flow. On the other hand, using techniques, University of Michigan, Ann Arbor, MI 48109 (Dated: 31 March 2012) We consider passive scalar mixing

  14. Apparatus for fixing latency

    DOE Patents [OSTI]

    Hall, David R. (Provo, UT); Bartholomew, David B. (Springville, UT); Moon, Justin (Bountiful, UT); Koehler, Roger O. (Provo, UT)

    2009-09-08T23:59:59.000Z

    An apparatus for fixing computational latency within a deterministic region on a network comprises a network interface modem, a high priority module and at least one deterministic peripheral device. The network interface modem is in communication with the network. The high priority module is in communication with the network interface modem. The at least one deterministic peripheral device is connected to the high priority module. The high priority module comprises a packet assembler/disassembler, and hardware for performing at least one operation. Also disclosed is an apparatus for executing at least one instruction on a downhole device within a deterministic region, the apparatus comprising a control device, a downhole network, and a downhole device. The control device is near the surface of a downhole tool string. The downhole network is integrated into the tool string. The downhole device is in communication with the downhole network.

  15. On the first Hochschild cohomology group of a cluster-tilted algebra

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On the first Hochschild cohomology group of a cluster-tilted algebra Ibrahim Assem, Mar´ia Julia Redondo and Ralf Schiffler Abstract Given a cluster-tilted algebra B, we study its first Hochschild cohomol- ogy group HH1 (B) with coefficients in the B-B-bimodule B. If C is a tilted algebra such that B

  16. EIS-0039: Motor Gasoline Deregulation and the Gasoline Tilt

    Broader source: Energy.gov [DOE]

    The Economic Regulatory Administration developed this EIS to evaluate the environmental impacts, including social and economic impacts, that may result from either of two proposed regulatory changes: (1) the exemption of motor gasoline from the Department of Energy's Mandatory Petroleum Price and Allocation Regulations, and (2) the adoption of the gasoline tilt, a proposed regulation that would allow refiners to recover an additional amount of their total increased costs on gasoline.

  17. Splay and tilt energy of bipolar lipid membranes

    E-Print Network [OSTI]

    Timur R. Galimzyanov; Peter I. Kuzmin; Peter Pohl; Sergey A. Akimov

    2014-12-28T23:59:59.000Z

    Archaea organisms are able to survive in extremely aggressive environment. It is thought that such resistance, at least, in part is sustained by unique properties of archaea membrane. The membrane consists of so called bolalipids, which has two polar heads joined by two hydrocarbon chains. Thus bolalipids can exist in two conformations: i) polar heads are located at different sides of bolalipid layer, so called, O-shape; ii) polar heads are located at the same side of the layer, so called, U-shape. Both polar heads and chains are chemically different from those for conventional lipids. In the present study we develop basis for theory of elasticity of bolalipid membranes. Deformations of splay, tilt and Gaussian curvature are considered. We show that energetic contributions of tilt deformation from two surfaces of bolalipid layer are additive, as well as Gaussian curvature, while splay deformations yield a cross-term. The presence of U-shapes is taken into account in terms of the layer spontaneous curvature. Estimation of tilt modulus and possible experiments allowing to measure splay moduli are described.

  18. RETHINKING STANDBY & FIXED COST CHARGES

    E-Print Network [OSTI]

    intended to recover a more significant share of fixed costs solely from solar PV customer- generators rooftop solar PV development at limited to no cost to taxpayers and non-solar utility customers. StandbyPage | i RETHINKING STANDBY & FIXED COST CHARGES: REGULATORY & RATE DESIGN PATHWAYS TO DEEPER SOLAR

  19. Web Style Guide Fixed Dimension

    E-Print Network [OSTI]

    Web Style Guide KEY: Fixed Dimension: Variable Dimension: V1.1, SEPTEMBER 2010 #12;Page 2 Table PAGE NEWS & EVENTS PAGE Fonts & Colors FONTS COLORS Web Writing Guidelines WEB WRITING GUIDELINES Web

  20. Tilting the Primordial Power Spectrum with Bulk Viscosity

    E-Print Network [OSTI]

    James E. Lidsey

    1993-12-16T23:59:59.000Z

    Within the context of the cold dark matter model, current observations suggest that inflationary models which generate a tilted primordial power spectrum with negligible gravitational waves provide the most promising mechanism for explaining large scale clustering. The general form of the inflationary potential which produces such a spectrum is a hyperbolic function and is interpreted physically as a bulk viscous stress contribution to the energy-momentum of a perfect baryotropic fluid. This is equivalent to expanding the equation of state as a truncated Taylor series. Particle physics models which lead to such a potential are discussed.

  1. The effects of gantry tilt on breast dose and image noise in cardiac CT

    SciTech Connect (OSTI)

    Hoppe, Michael E.; Gandhi, Diksha; Schmidt, Taly Gilat [Department of Biomedical Engineering, Marquette University, Milwaukee, Wisconsin 53233 (United States)] [Department of Biomedical Engineering, Marquette University, Milwaukee, Wisconsin 53233 (United States); Stevens, Grant M. [GE Healthcare, Waukesha, Wisconsin 53188 (United States)] [GE Healthcare, Waukesha, Wisconsin 53188 (United States); Foley, W. Dennis [Department of Radiology, Medical College of Wisconsin, Froedtert Memorial Lutheran Hospital, Milwaukee, Wisconsin 53226 (United States)] [Department of Radiology, Medical College of Wisconsin, Froedtert Memorial Lutheran Hospital, Milwaukee, Wisconsin 53226 (United States)

    2013-12-15T23:59:59.000Z

    Purpose: This study investigated the effects of tilted-gantry acquisition on image noise and glandular breast dose in females during cardiac computed tomography (CT) scans. Reducing the dose to glandular breast tissue is important due to its high radiosensitivity and limited diagnostic significance in cardiac CT scans.Methods: Tilted-gantry acquisition was investigated through computer simulations and experimental measurements. Upon IRB approval, eight voxelized phantoms were constructed from previously acquired cardiac CT datasets. Monte Carlo simulations quantified the dose deposited in glandular breast tissue over a range of tilt angles. The effects of tilted-gantry acquisition on breast dose were measured on a clinical CT scanner (CT750HD, GE Healthcare) using an anthropomorphic phantom with MOSFET dosimeters in the breast regions. In both simulations and experiments, scans were performed at gantry tilt angles of 0°–30°, in 5° increments. The percent change in breast dose was calculated relative to the nontilted scan for all tilt angles. The percent change in noise standard deviation due to gantry tilt was calculated in all reconstructed simulated and experimental images.Results: Tilting the gantry reduced the breast dose in all simulated and experimental phantoms, with generally greater dose reduction at increased gantry tilts. For example, at 30° gantry tilt, the dosimeters located in the superior, middle, and inferior breast regions measured dose reductions of 74%, 61%, and 9%, respectively. The simulations estimated 0%–30% total breast dose reduction across the eight phantoms and range of tilt angles. However, tilted-gantry acquisition also increased the noise standard deviation in the simulated phantoms by 2%–50% due to increased pathlength through the iodine-filled heart. The experimental phantom, which did not contain iodine in the blood, demonstrated decreased breast dose and decreased noise at all gantry tilt angles.Conclusions: Tilting the gantry reduced the dose to the breast, while also increasing noise standard deviation. Overall, the noise increase outweighed the dose reduction for the eight voxelized phantoms, suggesting that tilted gantry acquisition may not be beneficial for reducing breast dose while maintaining image quality.

  2. WestSolarGroundMount City of Phoenix/ASU West

    E-Print Network [OSTI]

    Shumway, John

    · Credit Union · Information Center · Parking Services Verde Dining Pavilion VRDE 3D Casa de Oro CDOR 3D Sun Devil Fitness Complex SDFCW 3D N S W E updated 10.2012 Map not to scale Map Legend Valley Metro Stop ASU Building ParkingArea Intercampus Shuttle A B C D E F G H 1 2 3 4 5 6 7 ASU Layered Map *The

  3. WestSolarGroundMount City of Phoenix/ASU West

    E-Print Network [OSTI]

    .O.D. Market (Provisions on Demand) Verde Dining Pavilion VRDE 3D Casa de Oro CDOR 3D Sun Devil Fitness Complex SDFCW 3D N S W E updated 07.2013 Map not to scale Map Legend Valley Metro Stop ASU Building ParkingArea Intercampus Shuttle A B C D E F G H 1 2 3 4 5 6 7 ASU Layered Map *The layer view option is only available

  4. Evidence of the Big Fix

    E-Print Network [OSTI]

    Yuta Hamada; Hikaru Kawai; Kiyoharu Kawana

    2014-09-09T23:59:59.000Z

    We give an evidence of the Big Fix. The theory of wormholes and multiverse suggests that the parameters of the Standard Model are fixed in such a way that the total entropy at the late stage of the universe is maximized, which we call the maximum entropy principle. In this paper, we discuss how it can be confirmed by the experimental data, and we show that it is indeed true for the Higgs vacuum expectation value $v_{h}$. We assume that the baryon number is produced by the sphaleron process, and that the current quark masses, the gauge couplings and the Higgs self coupling are fixed when we vary $v_{h}$. It turns out that the existence of the atomic nuclei plays a crucial role to maximize the entropy. This is reminiscent of the anthropic principle, however it is required by the fundamental low in our case.

  5. Evolution of the contact network during tilting cycles of a granular pile under gravity

    E-Print Network [OSTI]

    Staron, Lydie

    Evolution of the contact network during tilting cycles of a granular pile under gravity S. Deboeuf of a granular pile undergoing quasi-static tilting cycles in the gravity field. The volumic deformation of granular piles during continuous load in the gravity field (Staron, Vilotte, & Radjai 2002). Far before

  6. Escape configuration lattice near the nematic-isotropic transition: Tilt analogue of blue phases

    E-Print Network [OSTI]

    Buddhapriya Chakrabarti; Yashodhan Hatwalne; N. V. Madhusudana

    2006-04-28T23:59:59.000Z

    We predict the possible existence of a new phase of liquid crystals near the nematic-isotropic ($ NI $) transition. This phase is an achiral, tilt-analogue of the blue phase and is composed of a lattice of {\\em double-tilt}, escape-configuration cylinders. We discuss the structure and the stability of this phase and provide an estimate of the lattice parameter.

  7. Variable delivery, fixed displacement pump

    DOE Patents [OSTI]

    Sommars, Mark F. (Sparland, IL)

    2001-01-01T23:59:59.000Z

    A variable delivery, fixed displacement pump comprises a plurality of pistons reciprocated within corresponding cylinders in a cylinder block. The pistons are reciprocated by rotation of a fixed angle swash plate connected to the pistons. The pistons and cylinders cooperate to define a plurality of fluid compression chambers each have a delivery outlet. A vent port is provided from each fluid compression chamber to vent fluid therefrom during at least a portion of the reciprocal stroke of the piston. Each piston and cylinder combination cooperates to close the associated vent port during another portion of the reciprocal stroke so that fluid is then pumped through the associated delivery outlet. The delivery rate of the pump is varied by adjusting the axial position of the swash plate relative to the cylinder block, which varies the duration of the piston stroke during which the vent port is closed.

  8. Optimum fixed orientations and benefits of tracking for capturing solar radiation in the continental United States

    E-Print Network [OSTI]

    Lave, Matthew; Kleissl, Jan

    2011-01-01T23:59:59.000Z

    Optimum tilt of a solar collector, Solar & Wind Technology.and orientation for solar collector in Brunei Darussalam,Optimum tilt angle for solar collectors, Energy Sources.

  9. Method for removing tilt control in adaptive optics systems

    DOE Patents [OSTI]

    Salmon, Joseph Thaddeus (Livermore, CA)

    1998-01-01T23:59:59.000Z

    A new adaptive optics system and method of operation, whereby the method removes tilt control, and includes the steps of using a steering mirror to steer a wavefront in the desired direction, for aiming an impinging aberrated light beam in the direction of a deformable mirror. The deformable mirror has its surface deformed selectively by means of a plurality of actuators, and compensates, at least partially, for existing aberrations in the light beam. The light beam is split into an output beam and a sample beam, and the sample beam is sampled using a wavefront sensor. The sampled signals are converted into corresponding electrical signals for driving a controller, which, in turn, drives the deformable mirror in a feedback loop in response to the sampled signals, for compensating for aberrations in the wavefront. To this purpose, a displacement error (gradient) of the wavefront is measured, and adjusted by a modified gain matrix, which satisfies the following equation: G'=(I-X(X.sup.T X).sup.-1 X.sup.T)G(I-A)

  10. Method for removing tilt control in adaptive optics systems

    DOE Patents [OSTI]

    Salmon, J.T.

    1998-04-28T23:59:59.000Z

    A new adaptive optics system and method of operation are disclosed, whereby the method removes tilt control, and includes the steps of using a steering mirror to steer a wavefront in the desired direction, for aiming an impinging aberrated light beam in the direction of a deformable mirror. The deformable mirror has its surface deformed selectively by means of a plurality of actuators, and compensates, at least partially, for existing aberrations in the light beam. The light beam is split into an output beam and a sample beam, and the sample beam is sampled using a wavefront sensor. The sampled signals are converted into corresponding electrical signals for driving a controller, which, in turn, drives the deformable mirror in a feedback loop in response to the sampled signals, for compensating for aberrations in the wavefront. To this purpose, a displacement error (gradient) of the wavefront is measured, and adjusted by a modified gain matrix, which satisfies the following equation: G{prime} = (I{minus}X(X{sup T} X){sup {minus}1}X{sup T})G(I{minus}A). 3 figs.

  11. 'Tilting' the Universe with the Landscape Multiverse: The 'Dark' Flow

    E-Print Network [OSTI]

    L. Mersini-Houghton; R. Holman

    2008-10-30T23:59:59.000Z

    The theory for the selection of the initial state of the universe from the landscape multiverse predicts superhorizon inhomogeneities induced by nonlocal entanglement of our Hubble volume with modes and domains beyond the horizon. Here we show these naturally give rise to a bulk flow with correlation length of order horizon size. The modification to the gravitational potential has a characteristic scale $L_{1} \\simeq 10^{3} H^{-1}$, and it originates from the preinflationary remnants of the landscape. The 'tilt' in the potential induces power to the lowest CMB multipoles, with the dominant contribution being the dipole and next, the quadrupole. The induced multipoles $l \\le 2$ are aligned with an axis normal to their alignment plane being oriented along the preferred frame determined by the dipole. The preferred direction is displayed by the velocity field of the bulk flow relative to the expansion frame of the universe. The parameters are tightly constrained thus the derived modifications lead to robust predictions for testing our theory. The 'dark' flow was recently discovered by Kashlinsky et al. to be about $700 km/s$ which seems in good agreement with our predictions for the induced dipole of order $3 \\mu K$. Placed in this context, the discovery of the bulk flow by Kashlinsky et al. becomes even more interesting as it may provide a probe of the preinflationary physics and a window onto the landscape multiverse.

  12. Phonon thermal transport through tilt grain boundaries in strontium titanate

    SciTech Connect (OSTI)

    Zheng, Zexi; Chen, Xiang; Yang, Shengfeng; Xiong, Liming; Chen, Youping [Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611 (United States); Deng, Bowen; Chernatynskiy, Aleksandr [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States)

    2014-08-21T23:59:59.000Z

    In this work, we perform nonequilibrium molecular dynamics simulations to study phonon scattering at two tilt grain boundaries (GBs) in SrTiO{sub 3}. Mode-wise energy transmission coefficients are obtained based on phonon wave-packet dynamics simulations. The Kapitza conductance is then quantified using a lattice dynamics approach. The obtained results of the Kapitza conductance of both GBs compare well with those obtained by the direct method, except for the temperature dependence. Contrary to common belief, the results of this work show that the optical modes in SrTiO{sub 3} contribute significantly to phonon thermal transport, accounting for over 50% of the Kapitza conductance. To understand the effect of the GB structural disorder on phonon transport, we compare the local phonon density of states of the atoms in the GB region with that in the single crystalline grain region. Our results show that the excess vibrational modes introduced by the structural disorder do not have a significant effect on phonon scattering at the GBs, but the absence of certain modes in the GB region appears to be responsible for phonon reflections at GBs. This work has also demonstrated phonon mode conversion and simultaneous generation of new modes. Some of the new modes have the same frequency as the initial wave packet, while some have the same wave vector but lower frequencies.

  13. Tilted CDM versus WDM in the Subgalactic Scuffle

    E-Print Network [OSTI]

    James S. Bullock

    2001-10-31T23:59:59.000Z

    Although the currently favored cold dark matter plus cosmological constant model (LCDM) has proven to be remarkably successful on large scales, on subgalactic scales it faces some potentially fatal difficulties; these include over-producing dwarf satellite galaxies and predicting excessive central densities in dark halos. Among the most natural cosmological solutions to these problems is to replace cold dark matter with a warm species (LWDM). The warm component acts to reduce the small-scale power, resulting in fewer galactic subhalos and lower halo central densities. An alternative model with a mild ``tilt'' in the inflationary power spectrum (TLCDM; n =0.9) similarly reduces the central densities of dark halos, although the substructure abundance remains relatively high. Here I argue that because dwarf galaxy formation should be suppressed in the presence of a strong ionizing background, favored LWDM models will generally under-predict the observed abundance of dwarf galaxies. The satellite count for TLCDM fairs much better, as long as the photoionization effect is taken into account. TLCDM provides a more successful alternative to LWDM on subgalactic scales with the added attraction that it relies on only a minor, natural adjustment to the standard framework of CDM.

  14. Fixed Capital Investment Tax Credit (Connecticut)

    Broader source: Energy.gov [DOE]

    The Fixed Capital Investment Tax Credit allows a tax credit of 5% of the amount paid for any new fixed capital investment. Companies with fewer than 800 full-time employees may take a tax credit...

  15. Tilt-up concrete panels : an investigation of flexural stresses and punching shear during lifting

    E-Print Network [OSTI]

    Bono, Matthew P. (Matthew Paul)

    2011-01-01T23:59:59.000Z

    Tilt-up construction is becoming more popular in the United States due to its ease of construction, reliability, and relatively low construction and maintenance costs. In its most typical form, a concrete panel is cast on ...

  16. Analysis of flexure pivot tilting pad gas bearings with different damper configurations 

    E-Print Network [OSTI]

    Rimpel, Aaron Michael

    2009-05-15T23:59:59.000Z

    Hydrodynamic flexure pivot tilting pad gas bearings (FPTPGBs) can enable successful operation of oil-free microturbomachinery. This work presents the experimental and analytical study of such bearings with different damper configurations. A test rig...

  17. A Novel Computational Model for Tilting Pad Journal Bearings with Soft Pivot Stiffnesses

    E-Print Network [OSTI]

    Tao, Yujiao 1988-

    2012-12-10T23:59:59.000Z

    A novel tilting pad journal bearing model including pivot flexibility as well as temporal fluid inertia effects on the thin film fluid flow aims to accurately predict the bearing forced performance. The predictive model also accounts for the thermal...

  18. Measurements of static loading characteristics of a Flexurepivot Tilt Pad Hydrodynamic Bearing

    E-Print Network [OSTI]

    Walton, Nicholas Van Edward

    1995-01-01T23:59:59.000Z

    An experimental investigation examining the static loading characteristics of a four-pad, KMC FLEXUREPIVOT Tilt Pad Hydrodynamic Bearing is presented. Tests are conducted on the TRACE Fluid Film Bearing Element Test Rig for journal speeds ranging...

  19. Design and characterization of a planar mechanism for passive tilt-compensation

    E-Print Network [OSTI]

    Lai, Justin Yi-Shen

    2007-01-01T23:59:59.000Z

    This work investigated the design and testing of a planar mechanism for passively compensating tilt between two flat surfaces brought into close proximity. The proposed design uses flexural components which eliminate ...

  20. K'-Theory of a Cohen-Macaulay Local Ring with n-Cluster Tilting Object

    E-Print Network [OSTI]

    Navkal, Viraj

    2013-01-01T23:59:59.000Z

    Categories and K-theory Definition 4.1. An exact category isLocalizations in K-Theory Definition 8.11. Let R be a ringdefinition of n-cluster tilting comes from invariant theory.

  1. Scheduling with Fixed Maintenance, Shared Resources and ...

    E-Print Network [OSTI]

    2015-02-07T23:59:59.000Z

    Nov 17, 2014 ... maintenance constraints, blending and shared resources. ...... tegrated fixed time interval preventive maintenance and production for schedul-.

  2. Fixed Income Division Nomura International plc

    E-Print Network [OSTI]

    Macrina, Andrea

    Fixed Income Division © Nomura International plc Symmetry methods for quadratic Gaussian models International plc Outline Motivation The quadratic Gaussian distribution The quadratic Gaussian process The quadratic Gaussian model #12;Fixed Income Division 3© Nomura International plc Part 1 Motivation #12;Fixed

  3. Construction techniques and costs of tilt-up concrete farm structures

    E-Print Network [OSTI]

    Winsett, Ivan Lane

    1957-01-01T23:59:59.000Z

    ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 25 2S Ths warehouse with all Panels . 'honed and ths Pilaster Focal in Place Awaiting the Costing of ths Pilastars. . . . 29 14. Detail of Corner Pilaster~ Pilaster Fora, snd Footing Used in ths Concrete Tilt-Up w'arehouse . ~ . . ~ ~. . . . . 30... ~ ~ ~ ~ ~ ~ ~ 46 26. Detail of Zaproesd Corner Pilaster, Pilaster Rora, and Footing Used in the Concrete Tilt4p Anginal Shelter ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 48 27. The Antnal shelter heady for (hating the ConcNts Posts and PDa sts...

  4. Stable fixed points in the Kuramoto model

    E-Print Network [OSTI]

    Richard Taylor

    2010-10-05T23:59:59.000Z

    We develop a necessary condition for the existence of stable fixed points for the general network Kuramoto model, and use it to show that for the complete network the homogeneous model has no non-zero stable fixed point solution. This result provides further evidence that in the homogeneous case the zero fixed point has an attractor set consisting of the entire space minus a set of measure zero, a conjecture of Verwoerd and Mason (2007).

  5. Scheduling with Fixed Maintenance, Shared Resources and ...

    E-Print Network [OSTI]

    Christina N Burt

    2014-11-30T23:59:59.000Z

    Nov 30, 2014 ... Scheduling with Fixed Maintenance, Shared Resources and Nonlinear Feedrate Constraints: a Mine Planning Case Study. Christina N Burt ...

  6. Bidimensional Numerical Model for Polyurethane Smoldering in a Fixed Bed

    E-Print Network [OSTI]

    Ghabi, Chekib; Rein, Guillermo; Ben Ticha, Hmaied; Sassi, Mohamed

    2005-01-01T23:59:59.000Z

    FOR POLYUERETHANE SMOLDERING IN A FIXED BED Chekib GHABI 1 ,experiments. In this paper, a fixed bed of polyurethane foam

  7. Blue-tilted Tensor Spectrum and Thermal History of the Universe

    E-Print Network [OSTI]

    Sachiko Kuroyanagi; Tomo Takahashi; Shuichiro Yokoyama

    2014-07-17T23:59:59.000Z

    We investigate constraints on the spectral index of primordial gravitational waves (GWs), paying particular attention to a blue-tilted spectrum. Such constraints can be used to test a certain class of models of the early Universe. We investigate observational bounds from LIGO+Virgo, pulsar timing and big bang nucleosynthesis, taking into account the suppression of the amplitude at high frequencies due to reheating after inflation and also late-time entropy production. Constraints on the spectral index are presented by changing values of parameters such as reheating temperatures and the amount of entropy produced at late time. We also consider constraints under the general modeling approach which can approximately describe various scenarios of the early Universe. We show that the constraints on the blue spectral tilt strongly depend on the underlying assumption and, in some cases, a highly blue-tilted spectrum can still be allowed.

  8. No evidence for the blue-tilted power spectrum of relic gravitational waves

    E-Print Network [OSTI]

    Huang, Qing-Guo

    2015-01-01T23:59:59.000Z

    In this paper, we constrain the tilt of the power spectrum of relic gravitational waves by combining the data from BICEP2/Keck array and Planck (BKP) and the Laser Interferometer Gravitational-Waves Observatory (LIGO). From the data of BKP B-modes, the constraint on the tensor tilt is $n_t=0.66^{+1.83}_{-1.44}$ at the $68%$ confidence level. By further adding the LIGO upper limit on the energy density of gravitational waves, the constraint becomes $n_t=-0.76^{+1.37}_{-0.52}$ at the $68%$ confidence level. We conclude that there is no evidence for a blue-tilted power spectrum of relic gravitational waves and either sign of the index of tensor power spectrum is compatible with the data.

  9. No evidence for the blue-tilted power spectrum of relic gravitational waves

    E-Print Network [OSTI]

    Qing-Guo Huang; Sai Wang

    2015-02-09T23:59:59.000Z

    In this paper, we constrain the tilt of the power spectrum of relic gravitational waves by combining the data from BICEP2/Keck array and Planck (BKP) and the Laser Interferometer Gravitational-Waves Observatory (LIGO). From the data of BKP B-modes, the constraint on the tensor tilt is $n_t=0.66^{+1.83}_{-1.44}$ at the $68%$ confidence level. By further adding the LIGO upper limit on the energy density of gravitational waves, the constraint becomes $n_t=-0.76^{+1.37}_{-0.52}$ at the $68%$ confidence level. We conclude that there is no evidence for a blue-tilted power spectrum of relic gravitational waves and either sign of the index of tensor power spectrum is compatible with the data.

  10. Design and initial characterization of a compact, ultra high vacuum compatible, low frequency, tilt accelerometer

    SciTech Connect (OSTI)

    O’Toole, A., E-mail: amandajotoole@gmail.com, E-mail: riccardo.desalvo@gmail.com [Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, 405 Hilgard Ave, Los Angeles, California 90095 (United States); Peña Arellano, F. E. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Rodionov, A. V.; Kim, C. [California Institute of Technology, Pasadena, California 91125 (United States); Shaner, M.; Asadoor, M. [Mayfield Senior School, 500 Bellefontaine Street Pasadena, California 91105 (United States); Sobacchi, E. [Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa (Italy); Dergachev, V.; DeSalvo, R., E-mail: amandajotoole@gmail.com, E-mail: riccardo.desalvo@gmail.com [LIGO Laboratory, California Institute of Technology, MS 100-36, Pasadena, California 91125 (United States); Bhawal, A. [Arcadia High School, 180 Campus Drive, Arcadia, California 91007 (United States); Gong, P. [Department of Precision Instrument, Tsinghua University, Beijing 100084 (China); Lottarini, A. [Department of Computer Science, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa (Italy); Minenkov, Y. [Sezione INFN Tor Vergata, via della Ricerca Scientfica 1, 00133 Roma (Italy); Murphy, C. [School of Physics, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009 (Australia)

    2014-07-15T23:59:59.000Z

    A compact tilt accelerometer with high sensitivity at low frequency was designed to provide low frequency corrections for the feedback signal of the Advanced Laser Interferometer Gravitational Wave Observatory active seismic attenuation system. It has been developed using a Tungsten Carbide ceramic knife-edge hinge designed to avoid the mechanical 1/f noise believed to be intrinsic in polycrystalline metallic flexures. Design and construction details are presented; prototype data acquisition and control limitations are discussed. The instrument's characterization reported here shows that the hinge is compatible with being metal-hysteresis-free, and therefore also free of the 1/f noise generated by the dislocation Self-Organized Criticality in the metal. A tiltmeter of this kind will be effective to separate the ground tilt component from the signal of horizontal low frequency seismometers, and to correct the ill effects of microseismic tilt in advanced seismic attenuation systems.

  11. INVESTIGATION Gene Genealogies Within a Fixed Pedigree,

    E-Print Network [OSTI]

    INVESTIGATION Gene Genealogies Within a Fixed Pedigree, and the Robustness of Kingman's Coalescent, not as a random quantity. Gene genealogical models should describe the outcome of the percolation of genetic provide a surprisingly accurate description of gene genealogies on a fixed pedigree. We study

  12. Fourier Accelerated Conjugate Gradient Lattice Gauge Fixing

    E-Print Network [OSTI]

    R. J. Hudspith

    2014-05-22T23:59:59.000Z

    We provide details of the first implementation of a non-linear conjugate gradient method for Landau and Coulomb gauge fixing with Fourier acceleration. We find clear improvement over the Fourier accelerated steepest descent method, with the average time taken for the algorithm to converge to a fixed, high accuracy, being reduced by a factor of 2 to 4.

  13. Volume 177, number 2 CHEMICAL PHYSICS LETTERS 15 February 1991 Cu titration of tilted CO on a MO( 110) surface

    E-Print Network [OSTI]

    Goodman, Wayne

    to the surface normal. Upon subsequent deposition of = 0.9 ML Cu at 95 Kfollowed by heating, infrared, in a weakening of the C-O bond [ l-41. The tilted CO can either dissociate into atomic C and 0 upon heating to z) surface. In this Letter, we present the results of studies on tilted CO on MO( 110) using infrared

  14. PS-wave moveout inversion for tilted TI media: A physical-modeling study Pawan Dewangan1

    E-Print Network [OSTI]

    PS-wave moveout inversion for tilted TI media: A physical-modeling study Pawan Dewangan1 , Ilya Tsvankin2 , Mike Batzle3 , Kasper van Wijk4 , and Matthew Haney5 ABSTRACT Mode-converted PS-waves can- and PS- waves can be inverted for the parameters of a horizontal TI layer with a tilted symmetry axis

  15. Tilted Micro Air Jet for Flow Control Julien Malapert*, Rda Yahiaoui, Rabah Zeggari and Jean-Franois Manceau

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Tilted Micro Air Jet for Flow Control Julien Malapert*, Réda Yahiaoui°, Rabah Zeggari and Jean: In this paper, we present an interesting method to microfabricate a tilted micro air jet generator. We used a double side etching. For aircraft and cars, micro air jets will take an important place for fluid control

  16. First Flight Tests for a Quadrotor UAV with Tilting Propellers Markus Ryll, Heinrich H. Bulthoff, and Paolo Robuffo Giordano

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ]. For these latter platforms, only the Cartesian position and yaw angle of their body frame w.r.t. an inertial frame directions. As quadrotor UAVs are being more and more exploited as autonomous flying service robots [3], [4: ducted-fan designs [5], tilt-wing mechanisms [6], [7], or tilt-rotor actuations [8], [9]. Along similar

  17. Friction in (im-)miscible polymer brush systems and the role of transverse polymer-tilting

    E-Print Network [OSTI]

    Mueser, Martin

    Friction in (im-)miscible polymer brush systems and the role of transverse polymer-tilting Sissi de preferred solvent, leading to low friction and low wear rates. Here, we demonstrate, using molecular systems also show smaller friction than miscible systems, although the friction reduction is less than

  18. TILTED LAYER-BASED MODELING FOR ENHANCED LIGHT-FIELD PROCESSING AND IMAGE BASED RENDERING

    E-Print Network [OSTI]

    Dragotti, Pier Luigi

    TILTED LAYER-BASED MODELING FOR ENHANCED LIGHT-FIELD PROCESSING AND IMAGE BASED RENDERING James, UK {j.pearson09, marcovs, mike.brookes, p.dragotti}@imperial.ac.uk ABSTRACT Image based rendering- torealistic results. However for successful rendering, geometric pri- ors about the structure of the scene

  19. Atomistic simulations of structures and mechanical properties of polycrystalline diamond: Symmetrical S001< tilt grain boundaries

    E-Print Network [OSTI]

    Brenner, Donald W.

    Atomistic simulations of structures and mechanical properties of polycrystalline diamond for diamond to deposit as a polycrystalline film with a high density of grain boundaries and related defects structures and energies of symmetrical 001 tilt grain boundaries GB's in diamond have been calculated over

  20. Tilt Aftereffects in a Self-Organizing Model of the Primary Visual Cortex

    E-Print Network [OSTI]

    2000-01-01T23:59:59.000Z

    RF-LISSOM, a self-organizing model of laterally connected orientation maps in the primary visual cortex, was used to study the psychological phenomenon known as the tilt aftereffect. The same self-organizing processes that are responsible for the long-term development of the map are shown to result in tilt aftereffects over short time scales in the adult. The model permits simultaneous observation of large numbers of neurons and connections, making it possible to relate high-level phenomena to low-level events, which is difficult to do experimentally. The results give detailed computational support for the long-standing conjecture that the direct tilt aftereffect arises from adaptive lateral interactions between feature detectors. They also make a new prediction that the indirect effect results from the normalization of synaptic efficacies during this process. The model thus provides a unified computational explanation of self-organization and both the direct and indirect tilt aftereffect in the primary visual cortex.

  1. Tilting mirror strips in a linear Fresnel reector Gang Xiao (University of Nice, France)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Tilting mirror strips in a linear Fresnel reector Gang Xiao (University of Nice, France) February 29, 2012 Abstract When a linear Fresnel reector solar concentrator is installed in a site with high of the linear Fresnel reector. Technical restrictions and diculties of this method are also discussed

  2. Evidence of a tilted columnar structure for mesomorphic phases of benzene-hexa-n-alkanoates

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1285 Evidence of a tilted columnar structure for mesomorphic phases of benzene-hexa-n-alkanoates F. 2014 Optical observations on the mesomorphs of benzene-hexa-n-alkanoates, and their admixtures with benzene, show that the planes of these discotic molecules are not perpendicular to the columns in which

  3. Diesel Particulate Oxidation Model: Combined Effects of Fixed...

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

    Oxidation Model: Combined Effects of Fixed & Volatile Carbon Diesel Particulate Oxidation Model: Combined Effects of Fixed & Volatile Carbon Poster presented at the 16th Directions...

  4. An experimental investigation of a tilt rotor aircraft wake in ground effect

    E-Print Network [OSTI]

    Frey, Michael Louis

    1982-01-01T23:59:59.000Z

    were taken at several disk loadings and various model to ground plane distances. The data collected was used to evaluate the horizontal wake component's effect on people by re- lating the experimental velocity profiles to an equivalent uniform... Flow Measurement Equipment. Wake Velocity Versus Distance from Tilt Rotor Wake Velocity Versus Disk Loading Tuft Flow Visualization ? H=3D, 3, 000 RPM Tuft Flow Visualization ? H=2D, 9, 000 RPM Flow Direction Measurement Results ? H=1D 14 20 22...

  5. Measurement of rotordynamic coefficients for a high-speed flexure pivot tilting-pad bearing(load between pad) configuration

    E-Print Network [OSTI]

    Al-Ghasem, Adnan Mahmoud

    2005-08-29T23:59:59.000Z

    This thesis presents the dynamic and static forced performance of a flexure-pivot tilting-pad bearing load between pad (LBP) configuration for different rotor speeds and bearing unit loadings. The bearing has the following design parameters: 4 pads...

  6. Measured and Predicted Rotor-Pad Transfer Functions for a Rocker-Pivot Tilting-Pad Journal Bearing

    E-Print Network [OSTI]

    Wilkes, Jason Christopher

    2012-02-14T23:59:59.000Z

    Many researchers have compared predicted stiffness and damping coefficients for tilting-pad journal bearings (TPJBs) to measurements. Most have found that direct damping is consistently overpredicted. The thrust of this research is to explain...

  7. Effects of head-up tilt on mean arterial pressure, heart rate, and regional cardiac output distribution in aging rats 

    E-Print Network [OSTI]

    Ramsey, Michael Wiechmann

    2006-04-12T23:59:59.000Z

    Many senescent individuals demonstrate an inability to regulate mean arterial pressure (MAP) in response to standing or head-up tilt; however, whether this aging effect is the result of depressed cardiac function or an ...

  8. Red and blue tilted tensor spectrum from Gibbons-Hawking temperature

    E-Print Network [OSTI]

    Subhendra Mohanty; Akhilesh Nautiyal

    2015-01-09T23:59:59.000Z

    The scale invariant scalar and tensor perturbations, which are predicted from inflation, are eigenmodes in the conformal coordinates. The 'out' observer in the de Sitter space observes a thermal spectrum with a Gibbons-Hawking temperature $H/2\\pi$ of these 'Bunch-Davies' particles. The tensor power spectrum observed in experiments can have an imprint of the Gibbons-Hawking thermal distribution due to the mode mixing between 'in' state conformal coordinates and the coordinate frame of the observer. We find that the the Bunch-Davies modes appear as thermal modes to the asymptotic Minkowski observer in the future and the power spectrum of the gravitational waves is blue-tilted with a spectral index $n_T \\sim 1$ even in the standard slow-roll inflation. On the other hand if the coordinate frame of the observer is taken to be static coordinates, the tensor spectrum is red-tilted with $n_T\\sim -1$. A likelihood analysis shows and find the best fit values of the slow-roll parameters for both cases. We find that the blue-tilted tensor gives a better fit and reconciles the PLANCK upper bound on the tensor-to-scalar ratio, $r <0.11$ with BICEP2 measurement of $r=0.2$. This supports the idea of particle production due to the mode mixing between the initial Bunch-Davies vacuum modes and the asymptotic Minkowski vacuum of the post-inflation universe.

  9. Hybrid monitor for both beam position and tilt of pulsed high-current beams

    SciTech Connect (OSTI)

    Pang, J., E-mail: jpang-caep@foxmail.com; He, X.; Ma, C.; Zhao, L.; Li, Q.; Dai, Z. [Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAEP, P.O. Box 919-106, Mianyang 621900 (China)

    2014-09-15T23:59:59.000Z

    A Hybrid beam monitor, integrated with both azimuthal and axial B-dot probes, was designed for simultaneous measurement of both beam position and beam angle for pulsed high-current beams at the same location in beam pipe. The output signals of axial B-dot probes were found to be mixed with signals caused by transverse position deviation. In order to eliminate the unwanted signals, an elimination method was developed and its feasibility tested on a 50-? coaxial line test stand. By this method, a waveform, shape-like to that of input current and proportional to the tilt angle, was simulated and processed by following integration step to achieve the tilt angle. The tests showed that the measurement error of displacement and tilt angle less than 0.3 mm and 1.5 mrad, respectively. The latter error could be reduced with improved probes by reducing the inductance of the axial B-dot probe, but the improvement reached a limit due to some unknown systemic mechanism.

  10. An Analysis of Source Tilting and Sub-cell Opacity Sampling for IMC

    SciTech Connect (OSTI)

    Wollaeger, Ryan T. [Los Alamos National Laboratory; Urbatsch, Todd J. [Los Alamos National Laboratory; Wollaber, Allan B. [Los Alamos National Laboratory; Densmore, Jeffery D. [Los Alamos National Laboratory

    2012-08-02T23:59:59.000Z

    Implicit Monte Carlo (IMC) is a stochastic method for solving the radiative transfer equations for multiphysics application with the material in local thermodynamic equilibrium. The IMC method employs a fictitious scattering term that is computed from an implicit discretization of the material temperature equation. Unfortunately, the original histogram representation of the temperature and opacity with respect to the spatial domain leads to nonphysically fast propagation of radiation waves through optically thick material. In the past, heuristic source tilting schemes have been used to mitigate the numerical teleportation error of the radiation particles in IMC that cause this overly rapid radiation wave propagation. While improving the material temperature profile throughout the time duration, these tilting schemes alone do not generally alleviate the teleportation error to suitable levels. Another means of potentially reducing teleportation error in IMC is implementing continuous sub-cell opacities based on sub-cell temperature profiles. We present here an analysis of source tilting and continuous sub-cell opacity sampling applied to various discretizations of the temperature equation. Through this analysis, we demonstrate that applying both heuristics does not necessarily yield more accurate results if the discretization of the material equation is inconsistent with the Monte Carlo sub-cell transport.

  11. Infrared fixed point in quantum Einstein gravity

    E-Print Network [OSTI]

    S. Nagy; J. Krizsan; K. Sailer

    2012-06-28T23:59:59.000Z

    We performed the renormalization group analysis of the quantum Einstein gravity in the deep infrared regime for different types of extensions of the model. It is shown that an attractive infrared point exists in the broken symmetric phase of the model. It is also shown that due to the Gaussian fixed point the IR critical exponent $\

  12. Perchlorate Degradation in Fixed Bed Bioreactors-1

    E-Print Network [OSTI]

    Perchlorate Degradation in Fixed Bed Bioreactors- 1 Bruce Logan (blogan@psu.edu) Department technologies · Emphasis here on AWWARF studies: ­ Bench scale bioreactors ­ Pilot scale studies in Redlands, CA bioreactor study-- Overview and introduction: Bruce Logan · 8:45 Review of perchlorate remediation

  13. Consortium Support (Fixed Support) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsNovember 13, 2014 BuildingEnergyEnergyConsortium Support (Fixed Support)

  14. Ferroelectric and octahedral tilt twin disorder and the lead-free piezoelectric, sodium potassium niobate system

    SciTech Connect (OSTI)

    Schiemer, Jason [Research School of Chemistry, The Australian National University, Canberra, ACT 0200 (Australia)] [Research School of Chemistry, The Australian National University, Canberra, ACT 0200 (Australia); Withers, Ray L., E-mail: withers@rsc.anu.edu.au [Research School of Chemistry, The Australian National University, Canberra, ACT 0200 (Australia); Liu, Yun; Yi, Zhiguo [Research School of Chemistry, The Australian National University, Canberra, ACT 0200 (Australia)] [Research School of Chemistry, The Australian National University, Canberra, ACT 0200 (Australia)

    2012-11-15T23:59:59.000Z

    Using electron diffraction, trends in the local structural behaviour of the K{sub x}Na{sub 1-x}NbO{sub 3} (KNN x) 'solid solution' system are investigated and interpreted using an order/disorder based theoretical framework. At room temperature, electron diffraction shows a single plane of transverse polarised, diffuse intensity perpendicular to [0 1 0]{sub p} Low-Asterisk (p for parent sub-structure) across the entire phase diagram, indicative of ferroelectric disorder along the [0 1 0]{sub p} direction co-existing with long range ferroelectric order along the orthogonal [1 0 0]{sub p} and [0 0 1]{sub p} directions. An additional characteristic pattern of diffuse scattering is also observed, involving rods of diffuse intensity running along the [1 0 0]{sub p}* and [0 0 1]{sub p}* directions of the perovskite sub-structure and indicative of octahedral tilt disorder about the [1 0 0]{sub p} and [0 0 1]{sub p} axes co-existing with long range ordered octahedral tilting around the [0 1 0]{sub p} direction. A possible crystal chemical explanation for the existence of this latter octahedral tilt disorder is explored through bond valence sum calculations. The possible influence of both types of disorder on the previously refined, room temperature space group/s and average crystal structure/s is examined. - Graphical abstract: [-3,0.-1]p zone axis EDP of K{sub 0.46}Na{sub 0.54}NbO{sub 3} indexed according to both the relevant Pcm21 space groups (no subscripts) and the parent perovskite subcell (denoted by a subscript p). Highlights: Black-Right-Pointing-Pointer Characterises ferroelectric and octahedral tilt disorder in the KNN solid solution. Black-Right-Pointing-Pointer Discusses the possible driving forces for this disorder. Black-Right-Pointing-Pointer Discusses the implications of this disorder for physical properties. Black-Right-Pointing-Pointer Discusses the effects of this disorder on powder diffraction data.

  15. Dual-frequency terahertz emission from splitting filaments induced by lens tilting in air

    SciTech Connect (OSTI)

    Zhang, Zhelin; Chen, Yanping, E-mail: yanping.chen@sjtu.edu.cn; Yang, Liu; Yuan, Xiaohui; Liu, Feng; Chen, Min; Xu, Jianqiu; Zhang, Jie [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); Sheng, Zhengming [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG (United Kingdom)

    2014-09-08T23:59:59.000Z

    Dual-frequency terahertz radiation from air-plasma filaments produced with two-color lasers in air has been demonstrated experimentally. When a focusing lens is tilted for a few degrees, it is shown that the laser filament evolves from a single one to two sub-filaments. Two independent terahertz sources emitted from the sub-filaments with different frequencies and polarizations are identified, where the frequency of terahertz waves from the trailing sub-filament is higher than that from the leading sub-filament.

  16. Accurate measurement of relative tilt and azimuth angles in electron tomography: A comparison of fiducial marker method with electron diffraction

    SciTech Connect (OSTI)

    Hayashida, Misa [National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, Ibaraki 305-8565 (Japan); Malac, Marek; Egerton, Ray F. [National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton T6G 2M9 (Canada); Department of Physics, University of Alberta, Edmonton T6H 2E1 (Canada); Bergen, Michael; Li, Peng [National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton T6G 2M9 (Canada)

    2014-08-15T23:59:59.000Z

    Electron tomography is a method whereby a three-dimensional reconstruction of a nanoscale object is obtained from a series of projected images measured in a transmission electron microscope. We developed an electron-diffraction method to measure the tilt and azimuth angles, with Kikuchi lines used to align a series of diffraction patterns obtained with each image of the tilt series. Since it is based on electron diffraction, the method is not affected by sample drift and is not sensitive to sample thickness, whereas tilt angle measurement and alignment using fiducial-marker methods are affected by both sample drift and thickness. The accuracy of the diffraction method benefits reconstructions with a large number of voxels, where both high spatial resolution and a large field of view are desired. The diffraction method allows both the tilt and azimuth angle to be measured, while fiducial marker methods typically treat the tilt and azimuth angle as an unknown parameter. The diffraction method can be also used to estimate the accuracy of the fiducial marker method, and the sample-stage accuracy. A nano-dot fiducial marker measurement differs from a diffraction measurement by no more than ±1°.

  17. Early structure formation from primordial density fluctuations with a blue-tilted power spectrum

    E-Print Network [OSTI]

    Hirano, Shingo; Yoshida, Naoki; Spergel, David; Yorke, Harold W

    2015-01-01T23:59:59.000Z

    While observations of large-scale structure and the cosmic microwave background (CMB) provide strong constraints on the amplitude of the primordial power spectrum (PPS) on scales larger than 10 Mpc, the amplitude of the power spectrum on sub-galactic length scales is much more poorly constrained. We study early structure formation in a cosmological model with a blue-tilted PPS. We assume that the standard scale-invariant PPS is modified at small length scales as $P(k) \\sim k^{m_{\\rm s}}$ with $m_{\\rm s} > 1$. We run a series of cosmological hydrodynamic simulations to examine the dependence of the formation epoch and the characteristic mass of primordial stars on the tilt of the PPS. In models with $m_{\\rm s} > 1$, star-forming gas clouds are formed at $z > 100$, when formation of hydrogen molecules is inefficient because the intense CMB radiation destroys chemical intermediates. Without efficient coolant, the gas clouds gravitationally contract while keeping a high temperature. The protostars formed in such ...

  18. The Tilt of the Fundamental Plane: Three-quarters Structural Nonhomology, One-quarter Stellar Population

    E-Print Network [OSTI]

    I. Trujillo; A. Burkert; Eric. F. Bell

    2004-01-09T23:59:59.000Z

    The variation of the mass-to-light ratios M/L of early type galaxies as function of their luminosities L is investigated. It is shown that the tilt beta=0.27 (in the B--band) of the fundamental plane relation M/L ~ L^{beta} can be understood as a combination of two effects: about one-quarter (i.e. dbeta =0.07) is a result of systematic variations of the stellar population properties with increasing luminosity. The remaining three-quarters (i.e. dbeta =0.2) can be completely attributed to nonhomology effects that lead to a systematic change of the surface brightness profiles with increasing luminosity. Consequently, the observed tilt in the K-band (beta=0.17) where stellar population effects are negligible, is explained by nonhomology effects alone. After correcting for nonhomology, the mean value of the mass-to-light ratio of elliptical galaxies (M/L_B) is 7.1+-2.8 (1 sigma scatter).

  19. Nonperturbative infrared fixed point in sextet QCD

    E-Print Network [OSTI]

    Benjamin Svetitsky; Yigal Shamir; Thomas DeGrand

    2008-09-18T23:59:59.000Z

    The SU(3) gauge theory with fermions in the sextet representation is one of several theories of interest for technicolor models. We have carried out a Schrodinger functional (SF) calculation for the lattice theory with two flavors of Wilson fermions. We find that the discrete beta function changes sign when the SF renormalized coupling is in the neighborhood of g^2 = 2.0, showing a breakdown of the perturbative picture even though the coupling is weak. The most straightforward interpretation is an infrared-stable fixed point.

  20. Fixed-Point-Like Theorems on Subspaces

    E-Print Network [OSTI]

    Bich, Philippe; Cornet, Bernard

    2004-08-26T23:59:59.000Z

    denote by E? = {u ? Rn | ?x ? E, x · u = 0} the orthogonal space to E. If u1, . . . ,uk belong to E, a vector space, we denote by span{u1, . . . ,uk} the vector subspace of E spanned by u1, . . . ,uk. Let V be a Euclidean space and let k be an integer... Fixed-point-like theorems on subspaces Take I = {1},V1 =Rn+1, k1 = n, J =?, and apply Theorem 2.1 to the correspondences Hk, which clearly satisfy the assumptions of Theorem 2.1. So there exists E¯ ? Gn(Rn+1) such that E¯?Hk(E¯) #6;= ? for every k = 1...

  1. Fixed Rate Agreement | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic Plan| Departmentof OhioFirst Annual PostSmart Grid Progress |Fixed Rate

  2. Mechanical and charge transport properties of alkanethiol self-assembled monolayers on Au (111) surface: The Role of Molecular Tilt

    SciTech Connect (OSTI)

    Mulleregan, Alice; Qi, Yabing; Ratera, Imma; Park, Jeong Y.; Ashby, Paul D.; Quek, Su Ying; Neaton, J. B.; Salmeron, Miquel

    2007-11-12T23:59:59.000Z

    The relationship between charge transport and mechanical properties of alkanethiol self-assembled monolayers (SAM) on Au(111) films has been investigated using an atomic force microscope with a conductive tip. Molecular tilts induced by the pressure applied by the tip cause stepwise increases in film conductivity. A decay constant {beta} = 0.57 {+-} 0.03 {angstrom}{sup -1} was found for the current passing through the film as a function of tip-substrate separation due to this molecular tilt. This is significantly smaller than the value of {approx} 1 {angstrom}{sup -1} found when the separation is changed by changing the length of the alkanethiol molecules. Calculations indicate that for isolated dithiol molecules S-bonded to hollow sites, the junction conductance does not vary significantly as a function of molecular tilt. The impact of S-Au bonding on SAM conductance is discussed.

  3. Improving Design Methods for Fixed-Foundation Offshore Wind Energy...

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

    Improving Design Methods for Fixed-Foundation Offshore Wind Energy Systems Improving Design Methods for Fixed-Foundation Offshore Wind Energy Systems October 1, 2013 - 3:10pm...

  4. PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES Fabien FouiHen, INERIS, Parc initiating event of the fire ball observed. In concrete terms, when a fixed roof storage tank is surrounded

  5. Fixed drug eruption caused by the Japanese herbal drug kakkonto

    E-Print Network [OSTI]

    Furuichi, Megumi; Hara, Hiroshi; Asano, Yukie; Makino, Teruhiko; Shimizu, Tadamichi

    2010-01-01T23:59:59.000Z

    Topical provocation of fixed drug eruption. Br J Dermatol.neglected offender for fixed drug eruptions. Eur J Dermatoloral and non-oral herbal drugs may cause FDE. References 1.

  6. Steady periodic waves bifurcating for fixed-depth rotational flows

    E-Print Network [OSTI]

    consider steady periodic water waves for rotational flows with a specified fixed-depth over a flat bed. We the existence of steady periodic water waves for rotational flows with a specified fixed depth over a flat bedSteady periodic waves bifurcating for fixed-depth rotational flows David Henry School

  7. High-power, low-lateral divergence broad area quantum cascade lasers with a tilted front facet

    SciTech Connect (OSTI)

    Ahn, Sangil, E-mail: sangil.ahn@tuwien.ac.at; Schwarzer, Clemens; Zederbauer, Tobias; MacFarland, Donald C.; Detz, Hermann; Andrews, Aaron M.; Schrenk, Werner; Strasser, Gottfried [Institute for Solid State Electronics, Vienna University of Technology, 1040 Vienna (Austria)

    2014-02-03T23:59:59.000Z

    We introduce a simple technique to improve the beam quality of broad area quantum cascade lasers. Moderately tilted front facets of the laser provide suppression of higher order lateral waveguide modes. A device with a width of 60??m and a front facet angle of 17° shows a nearly diffraction limited beam profile. In addition, the peak output power and the slope efficiency of the device are increased since most of the light inside the cavity is emitted through the tilted front facet by an asymmetric light intensity distribution along the cavity.

  8. Fixed-Price Contracts Payment for a fixed-price contract is based on successfully providing the goods or services

    E-Print Network [OSTI]

    Tam, Tin-Yau

    costs more or costs less to complete the project than the price initially agreed upon. OneFixed-Price Contracts Payment for a fixed-price contract is based on successfully providing the goods or services agreed to in the contract. A fixed-price contract is not adjusted when it actually

  9. Fixed target experiments at the Fermilab Tevatron

    E-Print Network [OSTI]

    Gaston Gutierrez; Marco A. Reyes

    2014-09-29T23:59:59.000Z

    This paper presents a review of the study of Exclusive Central Production at a Center of Mass energy of $\\sqrt{s}=40$ GeV at the Fermilab Fixed Target program. In all reactions reviewed in this paper, protons with an energy of 800 GeV were extracted from the Tevatron accelerator at Fermilab and directed to a Liquid Hydrogen target. The states reviewed include $\\pi^+\\pi^-$, $K^0_s K^0_s$, $ K^0_sK^\\pm\\pi^\\mp$, $\\phi\\phi$ and $D^{*\\pm}$. Partial Wave Analysis results will be presented on the light states but only the cross section will be reviewed in the diffractive production of $D^{*\\pm}$

  10. Sequential conditions for fixed and periodic points

    E-Print Network [OSTI]

    Peters, Burnis Charles

    1970-01-01T23:59:59.000Z

    points is Bausch's Contraction Ma~in Theorem: Let (X, d) be a complete metric space and f a selfmap of X satisfying: (Sl) there exists c in [0, 1) such that d(f(x), f(y)) & c d(x, y) for all x, y in X. Then there exists a unique fixed point u in X... of Edelstein [2] and [3] and Bailey [1]. CHAPTEE I T410 LEMMAS I'he following two lemmas are essential to most of the theorems in the following section. Lemma 1: Let f be a selfmap of (X, d) and (f I} a subsequence n ~ of (f ). If lim f i(x) = u and lim f...

  11. On fixed-gap adiabatic quantum computation

    E-Print Network [OSTI]

    Ari Mizel

    2014-01-21T23:59:59.000Z

    Quantum computation has revolutionary potential for speeding algorithms and for simulating quantum systems such as molecules. We report here a quantum computer design that performs universal quantum computation within a single non-degenerate ground state protected from decohering noise by an energy gap that we argue is system-size-independent. Closely analogous to a traditional electric circuit, it substantially changes the requirements for quantum computer construction, easing measurement, timing, and heating problems. Using the standard adiabatic condition, we present evidence that this design permits "quantum concurrent processing" distributing a quantum computation among extra qubits to perform a quantum algorithm of N gates in an amount of time that scales with the square root of N. One consequence of our work is a fixed gap version of adiabatic quantum computation, which several arguments hinted could be impossible.

  12. Polarization-resolved sensing with tilted fiber Bragg gratings: theory and limits of detection

    E-Print Network [OSTI]

    Bialiayeu, Aliaksandr; Albert, Jacques

    2015-01-01T23:59:59.000Z

    Polarization based sensing with tilted fiber Bragg grating (TFBG) sensors is analysed theoretically by two alternative approaches. The first method is based on tracking the grating transmission for two orthogonal states of linear polarized light that are extracted from the measured Jones matrix or Stokes vectors of the TFBG transmission spectra. The second method is based on the measurements along the system principle axes and polarization dependent loss (PDL) parameter, also calculated from measured data. It is shown that the frequent crossing of the Jones matrix eigenvalues as a function of wavelength leads to a non-physical interchange of the calculated principal axes; a method to remove this unwanted mathematical artefact and to restore the order of the system eigenvalues and the corresponding principal axes is provided. A comparison of the two approaches reveals that the PDL method provides a smaller standard deviation and therefore lower limit of detection in refractometric sensing. Furthermore, the pol...

  13. Three-dimensional microelectromechanical tilting platform operated by gear-driven racks

    DOE Patents [OSTI]

    Klody, Kelly A.; Habbit Jr., Robert D.

    2005-11-01T23:59:59.000Z

    A microelectromechanical (MEM) tiltable-platform apparatus is disclosed which utilizes a light-reflective platform (i.e. a micromirror) which is supported above a substrate by flexures which can be bent upwards to tilt the platform in any direction over an angle of generally .+-.10 degrees using a gear-driven rack attached to each flexure. Each rack is driven by a rotary microengine (i.e. a micromotor); and an optional thermal actuator can be used in combination with each microengine for initially an initial uplifting of the platform away from the substrate. The MEM apparatus has applications for optical switching (e.g. between a pair of optical fibers) or for optical beam scanning.

  14. Design, Fabrication, and Test of a Superconducting Dipole Magnet Based on Tilted Solenoids

    SciTech Connect (OSTI)

    Caspi, S.; Dietderich, D. R.; Ferracin, P.; Finney, N. R.; Fuery, M. J.; Gourlay, S. A.; Hafalia, A. R.

    2007-06-01T23:59:59.000Z

    It can be shown that, by superposing two solenoid-like thin windings that are oppositely skewed (tilted) with respect to the bore axis, the combined current density on the surface is 'cos-theta' like and the resulting magnetic field in the bore is a pure dipole. As a proof of principle, such a magnet was designed, built and tested as part of a summer undergraduate intern project. The measured field in the 25mm bore, 4 single strand layers using NbTi superconductor, exceeded 1 T. The simplicity of this high field quality design, void of typical wedges end-spacers and coil assembly, is especially suitable for insert-coils using High Temperature Superconducting wire as well as for low cost superconducting accelerator magnets for High Energy Physics. Details of the design, construction and test are reported.

  15. Tilt and running of cosmological observables in generalized single-field inflation

    SciTech Connect (OSTI)

    Bartolo, Nicola; Matarrese, Sabino [Dipartimento di Fisica ''G. Galilei'', Università degli Studi di Padova, via Marzolo 8, I-35131 Padova (Italy); Fasiello, Matteo [Dipartimento di Fisica ''G. Occhialini'', Università degli Studi di Milano Bicocca and INFN, Sezione di Milano Bicocca, Piazza della Scienza 3, I-20126 Milano (Italy); Riotto, Antonio, E-mail: nicola.bartolo@pd.infn.it, E-mail: matteo.fasiello@mib.infn.it, E-mail: sabino.matarrese@pd.infn.it, E-mail: riotto@mail.cern.ch [INFN, Sezione di Padova, via Marzolo 8, I-35131 Padova (Italy)

    2010-12-01T23:59:59.000Z

    Employing an effective field theory approach to inflationary perturbations, we analyze in detail the effect of curvature-generated Lagrangian operators on various observables, focusing on their running with scales. At quadratic order, we solve the equation of motion at next-to-leading leading order in a generalized slow-roll approximation for a very general theory of single-field inflation. We derive the resulting power spectrum, its tilt and running. We then focus on the contribution to the primordial non-Gaussianity amplitude f{sub NL} sourced by a specific interaction term. We show that the running of f{sub NL} can be substantially larger than what dictated by the slow-roll parameters.

  16. Examining the Impact of Pad Flexibility on the Rotordynamic Coefficients of Rocker-Pivot-Pad Tilting-Pad Journal Bearings

    E-Print Network [OSTI]

    Gaines, Jennifer Elizabeth

    2014-12-03T23:59:59.000Z

    Measured and predicted static and dynamic load characteristics are provided for a three-pad, rocker-pivot, tilting-pad journal bearing in the load-between-pad orientation. The bearing has the following characteristics: 3 pads, .50 pad pivot offset...

  17. Rotordynamic coefficients for a load-between-pad, flexible-pivot tilting pad bearing at high loads

    E-Print Network [OSTI]

    Hensley, John Eric

    2006-10-30T23:59:59.000Z

    The dynamic and static performance of a flexure-pivot tilting pad bearing is presented at a load between pad configuration for various load and speed combinations. A similar work performed on the same bearing at lower loads ranging from 0-1 MPa (0...

  18. Dynamic and Static Characteristics of a Rocker-Pivot, Tilting-Pad Bearing with 50% and 60% Offsets.

    E-Print Network [OSTI]

    Kulhanek, Chris David

    2012-02-14T23:59:59.000Z

    Static performance and rotordynamic coefficients are provided for a rocker-pivot, tilting-pad journal bearing with 50 and 60 percent offset pads in a load-between-pad configuration. The bearing uses leading-edge-groove lubrication and has...

  19. Tilted Brownian Ratchet for DNA Analysis Lotien Richard Huang, Edward C. Cox, Robert H. Austin,*, and James C. Sturm

    E-Print Network [OSTI]

    Tilted Brownian Ratchet for DNA Analysis Lotien Richard Huang, Edward C. Cox, Robert H. Austin of fractionation of 100-kb DNA molecules in Brownian ratchet arrays. In our device, the electrophoretic flow a higher fraction of the diffusing molecules is "ratcheted" at each step in the array. Molecules of lengths

  20. Influence of a longitudinal and tilted vibration on stability and dewetting of a liquid film S. Shklyaev,1

    E-Print Network [OSTI]

    Khenner, Mikhail

    that the viscosity is important only in a thin boundary layer near the rigid wall 5,6 . This approximation works well or a tilted vibration. Using a multiscale technique we split the film motion into the oscillatory essential for the oscillatory motion. Applying the lubrication approximation for the averaged motion we

  1. Apparatus for fixed bed coal gasification

    DOE Patents [OSTI]

    Sadowski, Richard S. (Greenville, SC)

    1992-01-01T23:59:59.000Z

    An apparatus for fixed-bed coal gasification is described in which coal such as caking coal is continuously pyrolyzed with clump formation inhibited, by combining the coal with a combustible gas and an oxidant, and then continually feeding the pyrolyzed coal under pressure and elevated temperature into the gasification region of a pressure vessel. The materials in the pressure vessel are allowed to react with the gasifying agents in order to allow the carbon contents of the pyrolyzed coal to be completely oxidized. The combustion of gas produced from the combination of coal pyrolysis and gasification involves combining a combustible gas coal and an oxidant in a pyrolysis chamber and heating the components to a temperature of at least 1600.degree. F. The products of coal pyrolysis are dispersed from the pyrolyzer directly into the high temperature gasification region of a pressure vessel. Steam and air needed for gasification are introduced in the pressure vessel and the materials exiting the pyrolyzer flow down through the pressure vessel by gravity with sufficient residence time to allow any carbon to form carbon monoxide. Gas produced from these reactions are then released from the pressure vessel and ash is disposed of.

  2. Algorithm for Lot Sizing with Inventory Bounds and Fixed Costs

    E-Print Network [OSTI]

    Alper Atamturk

    2007-06-26T23:59:59.000Z

    Jun 26, 2007 ... An O(n^2) Algorithm for Lot Sizing with Inventory Bounds and Fixed Costs. Alper Atamturk (atamturk ***at*** berkeley.edu) Simge Kucukyavuz ...

  3. Optimization Online - $S_{0.5}$ Regularization Methods and Fixed ...

    E-Print Network [OSTI]

    Peng Dingtao

    2013-01-10T23:59:59.000Z

    Jan 10, 2013 ... $S_{0.5}$ Regularization Methods and Fixed Point Algorithms for Affine Rank Minimization Problems. Peng Dingtao (dingtaopeng ***at*** ...

  4. Optimization Online - Stochastic Quasi-Fejér Block-Coordinate Fixed ...

    E-Print Network [OSTI]

    Patrick L. Combettes

    2014-04-29T23:59:59.000Z

    Apr 29, 2014 ... Stochastic Quasi-Fejér Block-Coordinate Fixed Point Iterations with Random Sweeping. Patrick L. Combettes (plc ***at*** math.jussieu.fr)

  5. Penn State University Pilot-scale Tests of Fixed Bed

    E-Print Network [OSTI]

    Penn State University Pilot-scale Tests of Fixed Bed Reactors for Perchlorate Degradation: Plastic for inoculation #12;Penn State University PSU-O4 Process Patent: Perchlorate degradation in a fixed bed bioreactor in a packed bed reactor · Reactor performance compared with other studies · Stability of the bacterium used

  6. Trichloroethylene Mineralization in a Fixed-Film Bioreactor Using a

    E-Print Network [OSTI]

    Wood, Thomas K.

    Trichloroethylene Mineralization in a Fixed-Film Bioreactor Using a Pure Culture Expressing: An aerobic, single-pass, fixed-film bioreactor become an important compound for hazardous waste was designed). Although M. trichosporium OB3b has the highestindicator of TCE mineralization, the bioreactor with acti

  7. Classification of two dimensional fixed sun angle solar sail trajectories

    E-Print Network [OSTI]

    Roberts, Mark

    Classification of two dimensional fixed sun angle solar sail trajectories Stephen Wokes, Phil heliocentric trajectories for fixed sun angle solar sails are examined. The objective of this work (lightness factor) and Sun angle this phase space shows all possible solar sail trajectories. This phase

  8. Fixed Space of Positive Trace-Preserving Super-Operators

    E-Print Network [OSTI]

    Ansis Rosmanis

    2011-09-15T23:59:59.000Z

    We examine the fixed space of positive trace-preserving super-operators. We describe a specific structure that this space must have and what the projection onto it must look like. We show how these results, in turn, lead to an alternative proof of the complete characterization of the fixed space of completely positive trace-preserving super-operators.

  9. FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999

    E-Print Network [OSTI]

    Weston, Ken

    FIXED PRICE RESIDUAL FUNDS POLICY Policy dated March 29, 1999 After completion of all deliverables required under a fixed-price award, after costs in fulfilling the requirements of the award have been of the University. The request will be approved if the project is consistent with broader University priorities

  10. Experimental frequency-dependent rotordynamic coefficients for a load-on-pad, high-speed, flexible-pivot tilting-pad bearing

    E-Print Network [OSTI]

    Rodriguez Colmenares, Luis Emigdio

    2004-09-30T23:59:59.000Z

    This thesis provides experimental frequency dependent stiffness and damping coefficient results for a high-speed, lightly loaded, flexible-pivot tilting-pad bearing, with a load-on-pad configuration. Test conditions include four shaft speeds (6000...

  11. Static characteristics and rotordynamic coefficients of a four-pad tilting-pad journal bearing with ball-in-socket pivots in load-between-pad configuration

    E-Print Network [OSTI]

    Harris, Joel Mark

    2009-05-15T23:59:59.000Z

    Static characteristics and rotordynamic coefficients were experimentally determined for a four-pad tilting-pad journal bearing with ball-in-socket pivots in loadbetween- pad configuration. A frequency-independent [M]-[C]-[K] model fit...

  12. vy physical work). Some white-collar jobs may share these characteris-tics, but these factors overwhelmingly tilt toward blue-collar occupations.

    E-Print Network [OSTI]

    Holsinger, Kent

    overwhelmingly tilt toward blue-collar occupations. Often blue-collar jobs tend to be dirty, dangerous, and of a confiscated driver's license. Loaning money and covering for behav- ioral problems are also not uncommon. Some

  13. Unique determination of the -CN group tilt angle in Langmuir monolayers using sum-frequency polarization null angle and phase

    SciTech Connect (OSTI)

    Velarde Ruiz Esparza, Luis A.; Wang, Hongfei

    2013-10-14T23:59:59.000Z

    The relative phase and amplitude ratio between the ssp and ppp polarization combinations of the vibrational sum-frequency generation (SFG) response can be uniquely and accurately determined by the polarization null angle (PNA) method. In this report we show that PNA measurements of the -CN vibration in the 4-n pentyl-4'-cyanoterphenyl (5CT) Langmuir monolayer at the air/water interface yields ssp and ppp response of the same phase, while those in the 4-n-octyl-4'cyanobiphenyl (8CB) Langmuir monolayer have the opposite phase. Accordingly, the -CN group in the 5CT monolayer is tilted around 25+/-2 from the interface normal, while that in the 8CB is tilted around 57+/-2, consistent with the significant differences in the phase diagrams and hydrogen bonding SFG spectra of the two Langmuir monolayers as reported in the literature. These results also demonstrate that in SFG studies the relative phase information of the different polarization combinations, especially for the ssp and ppp, is important in the unique determination of the tilt angle and conformation of a molecular group at the interface.

  14. Heat transfer rates in fixed bed catalytic reactors

    E-Print Network [OSTI]

    Levelton, Bruce Harding

    1951-01-01T23:59:59.000Z

    HEAT TRANSFER RATES IN FIXED BED CATALYTIC REACTORS H EATTRNSFSAIX DB DNCLR YFNOAXa rRJRuSIX nSeR 1951i HssNIJFu FT SI TSBuR FXO LIXSRXS NRLIeeRXOROt HEAT TRANSFER RATES IN FIXED BED CATALYTIC REACTORS H EATTRNSFSAIX BSar DNCLR YFNOAXa r...RJRuSIX June 1951 HEAT TRANSFER RATES IN FIXED BED CATALYTIC REACTORS A Dissertation Submitted to the Faculty of the Agricultural and Mechanical College of Texas in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Major...

  15. Simulations of dislocation pile-ups at assymetric tilt boundaries in aluminum

    SciTech Connect (OSTI)

    Valone, Steven [Los Alamos National Laboratory; Wang, Jian M [Los Alamos National Laboratory; Hoagland, Richard C [Los Alamos National Laboratory; Germann, Timothy C [Los Alamos National Laboratory

    2011-01-21T23:59:59.000Z

    Materials deformation processes are increasingly approachable through the both conventional and accelerated molecular dynamics. In one deformation process, dislocation pile-up at a grain boundary, a greater understanding is required as to how dislocations transmit through grain boundaries, causing plastic deformation, or reflect and reconstruct the grain boundary, but with no macroscopic deformation. Here dislocation pile-ups in an alwninum bicrystal with an asymmetric tilt grain boundary are simulated atomistically, introducing effects of dislocation interactions beyond linear elastic ones. The observed responses as functions of the number of explicitly modeled dislocations and the magnitude of the applied stress are discussed. Typical conditions for the simulations consist of thermal relaxation room temperature, five active dislocations inserted within a 6.5-million-atom cell, and an additional fourteen dislocations represented within the atomistic simulation by their elastic strain fields. The dislocations are initially distributed according to linear elastic estimates of their positions in a double-ended pile-up from a chosen far-field stress. The whole cell is allowed to relax according to a procedure to be described. In the ensuing simulations, the system is propagated for some substantial period of time (lOs of ps), followed by small increments of strain. After a number of such increments, we observe all of the anticipated events. Usually several of the closest dislocations are absorbed into the grain boundary, resulting in varying amounts of reconstruction. Reflections from the boundary are common and show a strong dependence on sample thickness. Transmission events are seen on both slip systems in the other grain. The particulars of these events will be described as well.

  16. MULTICOMPONENT BIOSORPTION IN FIXED BEDS DAVID KRATOCHVIL and BOHUMIL VOLESKY*

    E-Print Network [OSTI]

    Volesky, Bohumil

    MULTICOMPONENT BIOSORPTION IN FIXED BEDS DAVID KRATOCHVIL and BOHUMIL VOLESKY* Department D and U[-] v intersticial velocity in packed-bed column [cm/ min] Vc volume of the packed-bed

  17. Orlando Utilities Commission- Home Energy Efficiency Fix-Up Program

    Broader source: Energy.gov [DOE]

    Orlando Utilities Commission's Home Energy Fix-Up Program provides assistance to low-income residential customers. To qualify for the program the total annual family income must be less than $40...

  18. Fixing Embryos for In Situ Hybridization Leslie Vosshall

    E-Print Network [OSTI]

    with a piece of nylon attached by the hollowed-out lid of the tube) in a small Tupperware container. Using and gently dry the bottom. Use a paint brush to transfer all dechorionated embryos to the fix. Embryos

  19. Thermodynamics of SU(3) gauge theory at fixed lattice spacing

    E-Print Network [OSTI]

    T. Umeda; S. Ejiri; S. Aoki; T. Hatsuda; K. Kanaya; Y. Maezawa; H. Ohno

    2008-10-09T23:59:59.000Z

    We study thermodynamics of SU(3) gauge theory at fixed scales on the lattice, where we vary temperature by changing the temporal lattice size N_t=(Ta_t)^{-1}. In the fixed scale approach, finite temperature simulations are performed on common lattice spacings and spatial volumes. Consequently, we can isolate thermal effects in observables from other uncertainties, such as lattice artifact, renormalization factor, and spatial volume effect. Furthermore, in the EOS calculations, the fixed scale approach is able to reduce computational costs for zero temperature subtraction and parameter search to find lines of constant physics, which are demanding in full QCD simulations. As a test of the approach, we study the thermodynamics of the SU(3) gauge theory on isotropic and anisotropic lattices. In addition to the equation of state, we calculate the critical temperature and the static quark free energy at a fixed scale.

  20. applying blood fix: Topics by E-print Network

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

    o Reinfuse the patient's blood slowly, no faster than 1mL per second, by pressing the plunger back Kay, Mark A. 249 Lecture 4: Fixed Points September 19, 2007 Computer...

  1. anaerobic fixed bed: Topics by E-print Network

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

    and liquid Paris-Sud XI, Universit de 5 Fixed Bed Countercurrent Low Temperature Gasification of Dairy Biomass and Coal-Dairy Biomass Blends Using Air-Steam as Oxidizer...

  2. Total effective dose equivalent associated with fixed uranium surface contamination

    SciTech Connect (OSTI)

    Bogard, J.S.; Hamm, R.N.; Ashley, J.C.; Turner, J.E.; England, C.A.; Swenson, D.E.; Brown, K.S.

    1997-04-01T23:59:59.000Z

    This report provides the technical basis for establishing a uranium fixed-contamination action level, a fixed uranium surface contamination level exceeding the total radioactivity values of Appendix D of Title 10, Code of Federal Regulations, part 835 (10CFR835), but below which the monitoring, posting, and control requirements for Radiological Areas are not required for the area of the contamination. An area of fixed uranium contamination between 1,000 dpm/100 cm{sup 2} and that level corresponding to an annual total effective dose equivalent (TEDE) of 100 mrem requires only routine monitoring, posting to alert personnel of the contamination, and administrative control. The more extensive requirements for monitoring, posting, and control designated by 10CFR835 for Radiological Areas do not have to be applied for these intermediate fixed-contamination levels.

  3. Uranium vacancy mobility at the sigma 5 symmetric tilt grain boundary in UO2

    SciTech Connect (OSTI)

    Uberuaga, Blas P. [Los Alamos National Laboratory

    2012-05-02T23:59:59.000Z

    An important consequence of the fissioning process occurring during burnup is the formation of fission products. These fission products alter the thermo-mechanical properties of the fuel. They also lead to macroscopic changes in the fuel structure, including the formation of bubbles that are connected to swelling of the fuel. Subsequent release of fission gases increase the pressure in the plenum and can cause changes in the properties of the fuel pin itself. It is thus imperative to understand how fission products, and fission gases in particular, behave within the fuel in order to predict the performance of the fuel under operating conditions. Fission gas redistribution within the fuel is governed by mass transport and the presence of sinks such as impurities, dislocations, and grain boundaries. Thus, to understand how the distribution of fission gases evolves in the fuel, we must understand the underlying transport mechanisms, tied to the concentrations and mobilities of defects within the material, and how these gases interact with microstructural features that might act as sinks. Both of these issues have been addressed in previous work under NEAMS. However, once a fission product has reached a sink, such as a grain boundary, its mobility may be different there than in the grain interior and predicting how, for example, bubbles nucleate within grain boundaries necessitates an understanding of how fission gases diffuse within boundaries. That is the goal of the present work. In this report, we describe atomic level simulations of uranium vacancy diffusion in the pressence of a {Sigma}5 symmetric tilt boundary in urania (UO{sub 2}). This boundary was chosen as it is the simplest of the boundaries we considered in previous work on segregation and serves as a starting point for understanding defect mobility at boundaries. We use a combination of molecular statics calculations and kinetic Monte Carlo (kMC) to determine how the mobility of uranium vacancies is altered at this particular grain boundary. Given that the diffusion of fission gases such as Xe are tied to the mobility of uranium vacancies, these results given insight into how fission gas mobility differs at grain boundaries compared to bulk urania.

  4. Atick-Witten Hagedorn Conjecture, near scale-invariant matter and blue-tilted gravity power spectrum

    E-Print Network [OSTI]

    Tirthabir Biswas; Tomi Koivisto; Anupam Mazumdar

    2014-05-03T23:59:59.000Z

    We will provide an interesting new mechanism to generate almost scale invariant seed density perturbations with a red spectrum, while keeping the gravitational wave spectrum blue-tilted in a stringy thermal contracting phase at temperatures beyond the Hagedorn temperature. This phase is often referred to as the Hagedorn phase where the free energy has been conjectured by Atick and Witten to grow more slowly than ordinary radiation. The primordial fluctuations are created by the statistical thermal fluctuations determined by the partition function, rather than quantum vacuum driven fluid dynamical fluctuations. In order for our mechanism to work we require a non-singular bouncing cosmology.

  5. Stray thermal influences in zinc fixed-point cells

    SciTech Connect (OSTI)

    Rudtsch, S.; Aulich, A.; Monte, C. [Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin (Germany)] [Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin (Germany)

    2013-09-11T23:59:59.000Z

    The influence of thermal effects is a major uncertainty contribution to the calibration of Standard Platinum Resistance Thermometers (SPRTs) in fixed-point cells. Axial heat losses strongly depend on the fixed-point temperature, constructional details of cells and SPRTs and the resulting heat transfer between cell, thermometer, furnace and environment. At the zinc point contributions by heat conduction and thermal radiation must be considered. Although the measurement of temperature gradients in the re-entrant well of a fixed-point cell provides very important information about the influence of axial heat losses, further investigations are required for a reliable estimate of the resulting uncertainty contribution. It is shown that specific modifications of a zinc fixed-point cell, following generally accepted principles, may result in systematic deviations of the measured fixed-point temperatures larger than typically stated in the uncertainty budget of National Metrology Institutes (NMIs). The underlying heat transport processes are investigated and the consequences for the construction of zinc cells are discussed.

  6. Levitating Drop in a Tilted Rotating Tank - Gallery of Fluid Motion Entry V044

    E-Print Network [OSTI]

    White, Andrew; Ward, Thomas

    2011-01-01T23:59:59.000Z

    A cylindrical acrylic tank with inner diameter D = 4 in. is mounted such that its axis of symmetry is at some angle measured from the vertical plane. The mixing tank is identical to that described in [1] The tank is filled with 200 mL of 1000 cSt silicone oil and a 5 mL drop of de-ionized water is placed in the oil volume. The water drop is allowed to come to rest and then a motor rotates the tank about its axis of symmetry at a fixed frequency = 0.3 Hz. Therefore the Reynolds number is ?xed at about Re ~ 5 yielding laminar flow conditions. A CCD camera (PixeLink) is used to capture video of each experiment.

  7. Policy Flash 2015-02 INCREMENTALLY FUNDING FIXED-PRICE ACTIONS...

    Office of Environmental Management (EM)

    02 INCREMENTALLY FUNDING FIXED-PRICE ACTIONS Policy Flash 2015-02 INCREMENTALLY FUNDING FIXED-PRICE ACTIONS Questions concerning this policy flash should be directed to Michael...

  8. Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...

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

    Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing Cyanobacterium Revealedby Electron Tomography. Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...

  9. Fixed-Node Diffusion Monte Carlo of Lithium Systems

    E-Print Network [OSTI]

    Rasch, Kevin

    2015-01-01T23:59:59.000Z

    We study lithium systems over a range of number of atoms, e.g., atomic anion, dimer, metallic cluster, and body-centered cubic crystal by the diffusion Monte Carlo method. The calculations include both core and valence electrons in order to avoid any possible impact by pseudo potentials. The focus of the study is the fixed-node errors, and for that purpose we test several orbital sets in order to provide the most accurate nodal hyper surfaces. We compare our results to other high accuracy calculations wherever available and to experimental results so as to quantify the the fixed-node errors. The results for these Li systems show that fixed-node quantum Monte Carlo achieves remarkably high accuracy total energies and recovers 97-99 % of the correlation energy.

  10. Measurement of thermodynamic temperature of high temperature fixed points

    SciTech Connect (OSTI)

    Gavrilov, V. R.; Khlevnoy, B. B.; Otryaskin, D. A.; Grigorieva, I. A.; Samoylov, M. L.; Sapritsky, V. I. [All-Russian Research Institute for Optical and Physical Measurements (VNIIOFI), 46 Ozernaya St., Moscow 119361 (Russian Federation)] [All-Russian Research Institute for Optical and Physical Measurements (VNIIOFI), 46 Ozernaya St., Moscow 119361 (Russian Federation)

    2013-09-11T23:59:59.000Z

    The paper is devoted to VNIIOFI's measurements of thermodynamic temperature of the high temperature fixed points Co-C, Pt-C and Re-C within the scope of the international project coordinated by the Consultative Committee for Thermometry working group 5 'Radiation Thermometry'. The melting temperatures of the fixed points were measured by a radiance mode radiation thermometer calibrated against a filter radiometer with known irradiance spectral responsivity via a high temperature black body. This paper describes the facility used for the measurements, the results and estimated uncertainties.

  11. Conjugate Directions in Lattice Landau and Coulomb Gauge Fixing

    E-Print Network [OSTI]

    R. J. Hudspith

    2014-12-08T23:59:59.000Z

    We provide details expanding on our implementation of a non-linear conjugate gradient method with Fourier acceleration for lattice Landau and Coulomb gauge fixing. We find clear improvement over the Fourier accelerated steepest descent method, with the average time taken for the algorithm to converge to a fixed, high accuracy, being reduced by a factor of 2 to 4. We show such improvement for the logarithmic definition of the gauge fields here, having already shown this to be the case for a more common definition. We also discuss the implementation of an optimal Fourier accelerated steepest descent method.

  12. Reconciliation of local and long range tilt correlations in underdoped La??xBaxCuO? (0 ? x ? 0.155)

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bozin, Emil S. [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhong, Ruidan [Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States); Knox, Kevin R. [Brookhaven National Lab. (BNL), Upton, NY (United States); Gu, Genda [Brookhaven National Lab. (BNL), Upton, NY (United States); Hill, John P. [Brookhaven National Lab. (BNL), Upton, NY (United States); Tranquada, John M. [Brookhaven National Lab. (BNL), Upton, NY (United States); Billinge, Simon J. L. [Brookhaven National Lab. (BNL), Upton, NY (United States); Columbia Univ., New York, NY (United States)

    2015-02-01T23:59:59.000Z

    A long standing puzzle regarding the disparity of local and long range CuO? octahedral tilt correlations in the underdoped regime of La??xBaxCuO? is addressed by utilizing complementary neutron powder diffraction and inelastic neutron scattering (INS) approaches. Long-range and static CuO? tilt order with orthogonally inequivalent Cu-O bonds in the CuO? planes in the low temperature tetragonal (LTT) phase is succeeded on warming through the low-temperature transition by one with orthogonally equivalent bonds in the low temperature orthorhombic (LTO) phase. In contrast, the signatures of LTT-type tilts in the instantaneous local atomic structure persist on heating throughout the LTO crystallographic phase on the nanoscale, although becoming weaker as temperature increases. Analysis of the INS spectra for the x = 1/8 composition reveals the dynamic nature of the LTT-like tilt fluctuations within the LTO phase and their 3D character. The doping dependence of relevant structural parameters indicates that the magnitude of the Cu-O bond anisotropy has a maximum at x = 1/8 doping where bulk superconductivity is most strongly suppressed, suggesting that the structural anisotropy might be influenced by electron-phonon coupling and the particular stability of the stripe-ordered phase at this composition. The bond-length modulation that pins stripe order is found to be remarkably subtle, with no anomalous bond length disorder at low temperature, placing an upper limit on any in-plane Cu-O bondlength anisotropy. The results further reveal that although appreciable octahedral tilts persist through the high-temperature transition and into the high temperature tetragonal (HTT) phase, there is no significant preference between different tilt directions in the HTT regime. This study also exemplifies the importance of a systematic approach using complementary techniques when investigating systems exhibiting a large degree of complexity and subtle structural responses.

  13. Reconciliation of local and long range tilt correlations in underdoped La??xBaxCuO? (0 ? x ? 0.155)

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bozin, Emil S.; Zhong, Ruidan; Knox, Kevin R.; Gu, Genda; Hill, John P.; Tranquada, John M.; Billinge, Simon J. L.

    2015-02-01T23:59:59.000Z

    A long standing puzzle regarding the disparity of local and long range CuO? octahedral tilt correlations in the underdoped regime of La??xBaxCuO? is addressed by utilizing complementary neutron powder diffraction and inelastic neutron scattering (INS) approaches. Long-range and static CuO? tilt order with orthogonally inequivalent Cu-O bonds in the CuO? planes in the low temperature tetragonal (LTT) phase is succeeded on warming through the low-temperature transition by one with orthogonally equivalent bonds in the low temperature orthorhombic (LTO) phase. In contrast, the signatures of LTT-type tilts in the instantaneous local atomic structure persist on heating throughout the LTO crystallographic phasemore »on the nanoscale, although becoming weaker as temperature increases. Analysis of the INS spectra for the x = 1/8 composition reveals the dynamic nature of the LTT-like tilt fluctuations within the LTO phase and their 3D character. The doping dependence of relevant structural parameters indicates that the magnitude of the Cu-O bond anisotropy has a maximum at x = 1/8 doping where bulk superconductivity is most strongly suppressed, suggesting that the structural anisotropy might be influenced by electron-phonon coupling and the particular stability of the stripe-ordered phase at this composition. The bond-length modulation that pins stripe order is found to be remarkably subtle, with no anomalous bond length disorder at low temperature, placing an upper limit on any in-plane Cu-O bondlength anisotropy. The results further reveal that although appreciable octahedral tilts persist through the high-temperature transition and into the high temperature tetragonal (HTT) phase, there is no significant preference between different tilt directions in the HTT regime. This study also exemplifies the importance of a systematic approach using complementary techniques when investigating systems exhibiting a large degree of complexity and subtle structural responses.« less

  14. Symmetries of migration related segments of all [001] coincidence site lattice tilt boundaries in (001) projections for all holohedral cubic materials

    SciTech Connect (OSTI)

    Moeck, Peter; York, Bryant W.; Browning, Nigel D.

    2014-09-11T23:59:59.000Z

    Utilizing bicrystallography in two dimensions (2D), the symmetries of migration related segments of Coincidence Site Lattice (CSL) boundaries are derived for projections along their [001] tilt axis in grain boundaries of crystalline materials that possess the holohedral point symmetry of the cubic system (i.e. m3m). These kinds of “edge-on” projections are typical for atomic resolution imaging of such tilt boundaries with Transmission Electron Microscopes (TEM). This fact facilitates the visual confirmation of our predictions by recently published Zcontrast scanning TEM investigations [H. Yang et al., Phil. Mag. 93 (2013) 1219] and many other TEM studies.

  15. WORKING PAPER N 2013 24 Regional Policy Evaluation: Interactive Fixed

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    s. Keywords: Policy evaluation, Linear factor models, Synthetic controls, Economic geographyWORKING PAPER N° 2013 ­ 24 Regional Policy Evaluation: Interactive Fixed Effects and Synthetic Controls Laurent Gobillon Thierry Magnac JEL Codes: C21, C23, H53, J64, R11 Keywords: Policy evaluation

  16. Economically Optimal Control of Kaibel Distillation Column: Fixed boilup rate

    E-Print Network [OSTI]

    Skogestad, Sigurd

    : In this study, a control structure is designed for a 4-product dividing wall (Kaibel) distillation column, basedEconomically Optimal Control of Kaibel Distillation Column: Fixed boilup rate Maryam Ghadrdan distillation column; Vapour split manipulation; Self-optimizing control. 1. INTRODUCTION Thermally coupled

  17. Coherence Progress: A Measure of Interestingness Based on Fixed Compressors

    E-Print Network [OSTI]

    Schmidhuber, Juergen

    Coherence Progress: A Measure of Interestingness Based on Fixed Compressors Tom Schaul, Leo Pape in observations to store them in a compact form, called a compressor. The search for interesting patterns can and the ability of the compressor to learn from observations. Coherence progress considers the increase

  18. Quantum adiabatic evolution using fixed-point quantum search

    E-Print Network [OSTI]

    Avatar Tulsi

    2015-04-19T23:59:59.000Z

    A quantum system can be evolved from the ground state of an initial Hamiltonian to that of a final Hamiltonian by adiabatically changing the Hamiltonian with respect to time. The system remains in the ground-state of time-changing Hamiltonian provided the change is slow enough. More precisely, if $g$ is the minimum energy gap between the ground state and other eigenstates of time-changing Hamiltonian then the evolution time must scale as the inverse square of $g$ for a successful evolution. Childs et al.~\\cite{childs} proposed an alternative, where the system is kept in the ground state of a time-changing Hamiltonian by doing measurements at suitably small enough time intervals. Their scheme is successful only if the time scales as the inverse cube of $g$, and thus the time-scaling is inferior to the adiabatic evolution. Here, we propose another alternative which is essentially similar to the Childs' scheme but uses the concept of fixed-point quantum search (FPQS) algorithm~\\cite{fixed1,fixed2} to recover the inverse-square time-scaling behaviour of adiabatic evolution. Our algorithm uses selective transformations of the unknown ground states and phase-estimation algorithm (PEA) is the main tool to approximate such selective transformations. Thus we demonstrate an important application of fixed-point quantum search which achieves monotonic convergence towards the desired final state.

  19. On Plane Bipartite Graphs without Fixed Edges Khaled Salem*

    E-Print Network [OSTI]

    Klavzar, Sandi

    cycle. Randi [12, 13] used alternating cycles (or conjugated circuits) to estimate resonance energies face is an alternating cycle. Moreover, a polyhex fragment has no fixed edges if and only if the boundaries of its infinite face and the non-hexagonal finite faces are alternating cycles. These results

  20. obligations. When these products are obtained at fixed prices

    E-Print Network [OSTI]

    Gross, George

    al. have failed to properly analyze these fixed- price full-requirements load- following products and Andrew Lemon, Power Procurement: What's in Your Mix?, PUB. UTIL. FORTNIGHTLY, Nov. 2006, at 50. 4. Load-following of generation assets in New England has become less concentrated following the use of load-following products

  1. Bandwidth assignment for reliable fixed broadband wireless Grit Claen

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    linear programming (ILP) counterparts. We further propose cutset-based valid inequalities to enhanceBandwidth assignment for reliable fixed broadband wireless networks Grit Claßen Lehrstuhl II f of data routing and bandwidth assignment that minimizes the total renewal fees of licenses. This problem

  2. Type-Based Termination, Inflationary Fixed-Points, and

    E-Print Network [OSTI]

    Abel, Andreas

    Type-Based Termination, Inflationary Fixed-Points, and Mixed Inductive-Coinductive Types Andreas Science (FICS 2012) ETAPS 2012, Tallinn, Estonia 24 March 2012 Andreas Abel (LMU) Type-Based Termination AIM XV 1 / 1 #12;Introduction Aspects of Termination What the talk is about: foundational approach

  3. Experimental Cooperative Control of Fixed-Wing Unmanned Aerial Vehicles

    E-Print Network [OSTI]

    Fainekos, Georgios E.

    Experimental Cooperative Control of Fixed-Wing Unmanned Aerial Vehicles Selcuk Bayraktar, Georgios architecture (Cloud cap technologies) Hybrid Modeling (of the Piccolo autopilot) Experiments Autonomous Flight - 20min #12;UAVs @ Penn Servos controlling the payload LaptopPC Dell X200 3.5HP fuel engine Deployable

  4. The 290 fixed-point sublattices of the Leech lattice

    E-Print Network [OSTI]

    Gerald Hoehn; Geoffrey Mason

    2015-05-24T23:59:59.000Z

    We determine the orbits of fixed-point sublattices of the Leech lattice with respect to the action of the Conway group Co_0. There are 290 such orbits. Detailed information about these lattices, the corresponding coinvariant lattices, and the stabilizing subgroups, is tabulated in several tables.

  5. The 290 fixed-point sublattices of the Leech lattice

    E-Print Network [OSTI]

    Hoehn, Gerald

    2015-01-01T23:59:59.000Z

    We determine the orbits of fixed-point sublattices of the Leech lattice with respect to the action of the Conway group Co_0. There are 290 such orbits. Detailed information about these lattices, the corresponding coinvariant lattices, and the stabilizing subgroups, is tabulated in several tables.

  6. 14.6 CLOSE-OUT OF FIXED PRICE CONTRACTS Auditors recently have identified three problems with our practices regarding close-out of fixed-price

    E-Print Network [OSTI]

    to the Department Head or Division Director to support continued work related to the project. If the end of a fixed-price14.6 CLOSE-OUT OF FIXED PRICE CONTRACTS Auditors recently have identified three problems with our practices regarding close-out of fixed-price contracts when 10% or more of the budget remains in the account

  7. Study of the interaction of solutes with ?5 (013) tilt grain boundaries in iron using density-functional theory

    SciTech Connect (OSTI)

    Jin, Hao; Militzer, Matthias [Centre for Metallurgical Process Engineering, The University of British Columbia, Vancouver, British Columbia V6T 1Z4 (Canada); Elfimov, Ilya [Quantum Matter Institute, The University of British Columbia, Vancouver, British Columbia V6T 1Z4 (Canada)

    2014-03-07T23:59:59.000Z

    Substitutional alloying elements significantly affect the recrystallization and austenite-ferrite phase transformation rates in steels. The atomistic mechanisms of their interaction with the interfaces are still largely unexplored. Using density functional theory, we determine the segregation energies between commonly used alloying elements and the ?5 (013) tilt grain boundary in bcc iron. We find a strong solute-grain boundary interaction for Nb, Mo, and Ti that is consistent with experimental observations of the effects of these alloying elements on delaying recrystallization and the austenite-to-ferrite transformation in low-carbon steels. In addition, we compute the solute-solute interactions as a function of solute pair distance in the grain boundary, which suggest co-segregation for these large solutes at intermediate distances in striking contrast to the bulk.

  8. The sensitivity enhancement of tilted fibre Bragg grating sensors with polarization dependent resonant nano-scale coatings

    E-Print Network [OSTI]

    Bialiayeu, Aliaksandr

    2015-01-01T23:59:59.000Z

    Fibre Bragg grating sensors have emerged as a simple, inexpensive, accurate, sensitive and reliable platform, a viable alternative to the traditional bulkier optical sensor platforms. In this work we present an extensive theoretical analysis of the tilted fibre Bragg grating sensor (TFBG) with a particular focus on its polarization-dependent properties. We have developed a highly efficient computer model capable of providing the full characterization of the TFBG device in less then $3$~minutes for a given state of incident light polarization. As a result, the polarization-dependent spectral response, the field distribution at the sensor surface as well as the fine structure of particular resonances have become accessible for theoretical analysis. As a part of this computer model we have developed a blazingly fast full-vector complex mode solver, capable of handling cylindrical waveguides of an arbitrary complex refractive index profile. Along with the theoretical study we have investigated optical properties ...

  9. Crystallographically tilted and partially strain relaxed GaN grown on inclined (111) facets etched on Si(100) substrate

    SciTech Connect (OSTI)

    Ansah Antwi, K. K. [Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore); Institute of Materials Research and Engineering, 3 Research Link, 117602 Singapore (Singapore); Soh, C. B. [Singapore Institute of Technology, 10 Dover Drive, Singapore 138683 (Singapore); Wee, Q. [Singapore-MIT Alliance, National University of Singapore, Singapore 117576 (Singapore); Tan, Rayson J. N.; Tan, H. R. [Institute of Materials Research and Engineering, 3 Research Link, 117602 Singapore (Singapore); Yang, P. [Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, 117603 Singapore (Singapore); Sun, L. F.; Shen, Z. X. [School of Physical and Mathematical Sciences, Nanyang Technological University, SPMS-03-01, 21 Nanyang Link (Singapore); Chua, S. J., E-mail: elecsj@nus.edu.sg [Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore); Institute of Materials Research and Engineering, 3 Research Link, 117602 Singapore (Singapore); Singapore-MIT Alliance, National University of Singapore, Singapore 117576 (Singapore)

    2013-12-28T23:59:59.000Z

    High resolution X-ray diffractometry (HR-XRD), Photoluminescence, Raman spectroscopy, and Transmission electron microscope measurements are reported for GaN deposited on a conventional Si(111) substrate and on the (111) facets etched on a Si(100) substrate. HR-XRD reciprocal space mappings showed that the GaN(0002) plane is tilted by about 0.63°?±?0.02° away from the exposed Si(111) growth surface for GaN deposited on the patterned Si(100) substrate, while no observable tilt existed between the GaN(0002) and Si(111) planes for GaN deposited on the conventional Si(111) substrate. The ratio of integrated intensities of the yellow to near band edge (NBE) luminescence (I{sub YL}/I{sub NBE}) was determined to be about one order of magnitude lower in the case of GaN deposited on the patterned Si(100) substrate compared with GaN deposited on the conventional Si(111) substrate. The Raman E{sub 2}(high) optical phonon mode at 565.224?±?0.001?cm{sup ?1} with a narrow full width at half maximum of 1.526?±?0.002?cm{sup ?1} was measured, for GaN deposited on the patterned Si(100) indicating high material quality. GaN deposition within the trench etched on the Si(100) substrate occurred via diffusion and mass-transport limited mechanism. This resulted in a differential GaN layer thickness from the top (i.e., 1.8??m) of the trench to the bottom (i.e., 0.3??m) of the trench. Mixed-type dislocation constituted about 80% of the total dislocations in the GaN grown on the inclined Si(111) surface etched on Si(100)

  10. Cluster characters II: A multiplication formula Let C be a Hom-finite triangulated 2-CalabiYau category with a cluster tilting object. Under

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Cluster characters II: A multiplication formula Yann Palu Abstract Let C be a Hom categories of modules over a preprojective algebra of Dynkin type, we prove a multiplication formula for the cluster character associated with any cluster tilting object. This formula generalizes those obtained

  11. PS-wave moveout inversion for tilted TI media: A physical-modeling study Pawan Dewangan and Ilya Tsvankin , Center for Wave Phenomena, Colorado School of Mines (CSM),

    E-Print Network [OSTI]

    PS-wave moveout inversion for tilted TI media: A physical-modeling study Pawan Dewangan and Ilya Tsvankin , Center for Wave Phenomena, Colorado School of Mines (CSM), Mike Batzle, Center for Rock Abuse, CSM, Kasper van Wijk, Physical Acoustics Laboratory, CSM, and Matt Haney, Center for Wave Phenomena

  12. Measurements Versus Predictions for the Static and Dynamic Characteristics of a Four-pad Rocker-pivot, Tilting-pad Journal Bearing

    E-Print Network [OSTI]

    Tschoepe, David 1987-

    2012-08-16T23:59:59.000Z

    Measured and predicted static and dynamic characteristics are provided for a four-pad, rocker-pivot, tilting-pad journal bearing in the load-on-pad and load-between-pad orientations. The bearing has the following characteristics: 4 pads, .57 pad...

  13. Measured and predicted rotordynamic coefficients and static performance of a rocker-pivot, tilt pad bearing in load-on-pad and load-between-pad configurations

    E-Print Network [OSTI]

    Carter, Clint Ryan

    2009-06-02T23:59:59.000Z

    This thesis presents the static and dynamic performance data for a 5 pad tilting pad bearing in both the load-on-pad (LOP) and the load-between-pad (LBP) configurations over a variety of different loads and speeds. The bearing tested was an Orion...

  14. Fixed points, stable manifolds, weather regimes, and their predictability

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Deremble, Bruno; D'Andrea, Fabio; Ghil, Michael

    2009-01-01T23:59:59.000Z

    In a simple, one-layer atmospheric model, we study the links between low-frequency variability and the model’s fixed points in phase space. The model dynamics is characterized by the coexistence of multiple ''weather regimes.'' To investigate the transitions from one regime to another, we focus on the identification of stable manifolds associated with fixed points. We show that these manifolds act as separatrices between regimes. We track each manifold by making use of two local predictability measures arising from the meteorological applications of nonlinear dynamics, namely, ''bred vectors'' and singular vectors. These results are then verified in the framework of ensemblemore »forecasts issued from clouds (ensembles) of initial states. The divergence of the trajectories allows us to establish the connections between zones of low predictability, the geometry of the stable manifolds, and transitions between regimes.« less

  15. Fixed points, stable manifolds, weather regimes, and their predictability

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Deremble, Bruno [Laboratoire de Meteorologie Dynamique (CNRS and IPSL), Paris (France); D'Andrea, Fabio [Laboratoire de Meteorologie Dynamique (CNRS and IPSL), Paris (France); Ghil, Michael [Univ. of California, Los Angeles, CA (United Staes). Atmospheric and Oceanic Sciences and Inst. of Geophysics and Planetary Physics

    2009-01-01T23:59:59.000Z

    In a simple, one-layer atmospheric model, we study the links between low-frequency variability and the model’s fixed points in phase space. The model dynamics is characterized by the coexistence of multiple ''weather regimes.'' To investigate the transitions from one regime to another, we focus on the identification of stable manifolds associated with fixed points. We show that these manifolds act as separatrices between regimes. We track each manifold by making use of two local predictability measures arising from the meteorological applications of nonlinear dynamics, namely, ''bred vectors'' and singular vectors. These results are then verified in the framework of ensemble forecasts issued from clouds (ensembles) of initial states. The divergence of the trajectories allows us to establish the connections between zones of low predictability, the geometry of the stable manifolds, and transitions between regimes.

  16. Remarks on a fixed point theorem of Caristi

    E-Print Network [OSTI]

    Egle, David Lee

    1977-01-01T23:59:59.000Z

    such that 0 & k & 1 and d(f(x), f(y)) & kd(x, y) for each x, y c X. It is said to be lower semi-continuous on X if and only if for each x c X, given s & 0, there exists a 6 & 0 such that f(x) & f(y) + c for all y s X where d(x, y) & 6. Equivalently, f...(x)) ? d(f(x), f (x))] & (1-k) [d(x, f(x)) - kd(x, f(x))] = d(x, f(x)). Since f is continuous, the conditions of Theorem 1. 3 are satisfied, and f has a fixed point. The uniqueness of the fixed point follows from the contraction condition imposed on f...

  17. Is there a Bigger Fix in the Multiverse?

    E-Print Network [OSTI]

    Pedro F. González-Díaz

    2011-02-14T23:59:59.000Z

    The dynamics of baby universes which are branched off in pairs from a large universe and whose respective members are entangled to each other has been studied in quantum gravity and string theory. It is shown that the probability measure for such pairs essentially keeps its Planckian form when one of their two members is trapped by a Lorentzian tunnel and travels through it into another large universe, so that the two baby universes of the pairs preserve their mutual entanglement even when they are going to be finally branched in distinct large universes. The conclusion is thus drawn that big fixing the fundamental constants in our universe actually big fixes such constants in the set of all single universes of the multiverse.

  18. Wave interaction with a fixed vertical flat plate

    E-Print Network [OSTI]

    Glover, Lanny Bruce

    1985-01-01T23:59:59.000Z

    of Science in Ocean Engineering and graduated with merit in 1979. Commissioned an Ensign in the United States Navy he was selected for the Navy's Nuclear Power Program. After completing formal navy training he served onboard the USS TRUXTUN (CGN-35...) Andrew C. Vastano (Member) December )985 ABSTRACT wave Interaction with a Fixed Vertical Flat Plate. (December 1985) Lenny Bruce Glover, B. S. , United States Naval Academy Chairman of Advisory Committee: Dr. John B. Herbich The lift and drag...

  19. Sailplane glide performance and control using fixed and articulating winglets

    E-Print Network [OSTI]

    Colling, James David

    1995-01-01T23:59:59.000Z

    . Nicks for his guidance and assistance during the investigation. Thanks are also given to Mr. Greg G. Steen, and all the Texas ARM wind tunnel staff for their assistance. The author would like to thank Mr. Peter C. Masak for allowing the use of his... thus reducing the total drag of the aircraft as described by Nicks '. For this investigation, two separate wind tunnel tests were conducted. The first test studied the general behavior of fixed geometry winglets for sailplancs, and performance...

  20. Modeling for Anaerobic Fixed-Bed Biofilm Reactors

    SciTech Connect (OSTI)

    Liu, B. Y. M.; Pfeffer, J. T.

    1989-06-01T23:59:59.000Z

    The specific objectives of this research were: 1. to develop an equilibrium model for chemical aspects of anaerobic reactors; 2. to modify the equilibrium model for non-equilibrium conditions; 3. to incorporate the existing biofilm models into the models above to study the biological and chemical behavior of the fixed-film anaerobic reactors; 4. to experimentally verify the validity of these models; 5. to investigate the biomass-holding ability of difference packing materials for establishing reactor design criteria.

  1. Theta vacuum physics from QCD at fixed topology

    E-Print Network [OSTI]

    Sinya Aoki; Hidenori Fukaya; Shoji Hashimoto; Tetsuya Onogi

    2007-10-24T23:59:59.000Z

    We propose a method to obtain physical quantities in the theta vacuum from those at fixed topology, which are different by finite size effects. Extending the work by Brower et al., we derive the formula to estimate these finite size corrections for arbitrary correlators in terms of the topological susceptibility and the theta dependence. Applying this formula, we show that topological susceptibility can be measured through two-point functions of pseudoscalar operator.

  2. ON AUTOMORPHISM-FIXED SUBGROUPS OF A FREE GROUP

    E-Print Network [OSTI]

    Ventura, Enric

    Sq., London, U. K. e-mail: A.Martino@city.ac.uk E. Ventura Dep. Mat. Apl. III, Univ. Pol. Catalunya, Barcelona, Spain e-mail: enric.ventura@upc.es Abstract Let F be a finitely generated free group, and let n-Turner [IT], using the result of [BH], showed that any 1-endo-fixed subgroup of Fn has rank at most n. Dicks-Ventura

  3. The fixed irreducible bridge ensemble for self-avoiding walks

    E-Print Network [OSTI]

    Michael James Gilbert

    2014-10-17T23:59:59.000Z

    We define a new ensemble for self-avoiding walks in the upper half-plane, the fixed irredicible bridge ensemble, by considering self-avoiding walks in the upper half-plane up to their $n$-th bridge height, $Y_n$, and scaling the walk by $1/Y_n$ to obtain a curve in the unit strip, and then taking $n\\to\\infty$. We then conjecture a relationship between this ensemble to $\\SLE$ in the unit strip from $0$ to a fixed point along the upper boundary of the strip, integrated over the conjectured exit density of self-avoiding walk spanning a strip in the scaling limit. We conjecture that there exists a positive constant $\\sigma$ such that $n^{-\\sigma}Y_n$ converges in distribution to that of a stable random variable as $n\\to\\infty$. Then the conjectured relationship between the fixed irreducible bridge scaling limit and $\\SLE$ can be described as follows: If one takes a SAW considered up to $Y_n$ and scales by $1/Y_n$ and then weights the walk by $Y_n$ to an appropriate power, then in the limit $n\\to\\infty$, one should obtain a curve from the scaling limit of the self-avoiding walk spanning the unit strip. In addition to a heuristic derivation, we provide numerical evidence to support the conjecture and give estimates for the boundary scaling exponent.

  4. Fixed Block Compression Boosting in FM-Indexes

    E-Print Network [OSTI]

    Kärkkäinen, Juha

    2011-01-01T23:59:59.000Z

    A compressed full-text self-index occupies space close to that of the compressed text and simultaneously allows fast pattern matching and random access to the underlying text. Among the best compressed self-indexes, in theory and in practice, are several members of the FM-index family. In this paper, we describe new FM-index variants that combine nice theoretical properties, simple implementation and improved practical performance. Our main result is a new technique called fixed block compression boosting, which is a simpler and faster alternative to optimal compression boosting and implicit compression boosting used in previous FM-indexes.

  5. Biodegradation of xenobiotics in a fixed bed reactor

    SciTech Connect (OSTI)

    Seignez, C.; Mottier, V.; Pulgarin, C.; Adler, N.; Peringer, P. (Swiss Federal Institute of Tech., Lausanne (Switzerland))

    1993-11-01T23:59:59.000Z

    The specific example of an at-source biological wastewater treatment has been elaborated and developed. A two-phase fixed-bed bioreactor system was tested for its efficiency using phenol as a test substance and then, the degradation of sodium anthraquinone-2-sulfonate (SAS) was studied and performed. The continuous aerobic degradation of phenol or SAS as the sole source of carbon was investigated. For SAS degradation with an immobilized mixed bacterial culture, industrial activated sludge was used as inoculum, while for phenol a domestic activated sludge from a municipal wastewater treatment plant and activated Actizym-sludge prepared with Actizym[sup [reg sign

  6. 15 Squares mod p Fix a prime p.

    E-Print Network [OSTI]

    Ramakrishnan, Dinakar

    15 Squares mod p Fix a prime p. Basic question: Given a, how can we determine if #b # Z such that a # b 2 (mod p)? Trivial case if p|a, take b # 0. So from now on take (a, p) = 1. p=3 p=5 p=7 x x 2 x x 2 x x 2 1 1 1 1 1 1 2 1 2 ­1 2 4 3 ­1 4 2 ­1=4 1 5 4 6 1 1 # d p 1, 4 as mod 5 1, 2, 4 as mod p 2

  7. 15 Squares mod p Fix a prime p.

    E-Print Network [OSTI]

    Ramakrishnan, Dinakar

    15 Squares mod p Fix a prime p. Basic question: Given a, how can we determine if b Z such that a b2 (mod p)? Trivial case if p|a, take b 0. So from now on take (a, p) = 1. p=3 p=5 p=7 x x2 x x2 x x2 1 1 1 1 1 1 2 1 2 -1 2 4 3 -1 4 2 -1=4 1 5 4 6 1 1 dp 1, 4 as mod 5 1, 2, 4 as mod p 2 2, 3 3

  8. Surface tension in bilayer membranes with fixed projected area

    E-Print Network [OSTI]

    Alberto Imparato

    2006-04-05T23:59:59.000Z

    We study the elastic response of bilayer membranes with fixed projected area to both stretching and shape deformations. A surface tension is associated to each of these deformations. By using model amphiphilic membranes and computer simulations, we are able to observe both the types of deformation, and thus, both the surface tensions, related to each type of deformation, are measured for the same system. These surface tensions are found to assume different values in the same bilayer membrane: in particular they vanish for different values of the projected area. We introduce a simple theory which relates the two quantities and successfully apply it to the data obtained with computer simulations.

  9. Fixed Bed Adsorption of Acetone and Ammonia onto Oxidized Activated Carbon Fibers

    E-Print Network [OSTI]

    Braatz, Richard D.

    Fixed Bed Adsorption of Acetone and Ammonia onto Oxidized Activated Carbon Fibers Christian L a fixed bed configuration. An oxidation treatment with nitric and sulfuric acids resulted in a significant

  10. The conformation change of model polymers in stochastic flow fields: Flow through fixed beds

    E-Print Network [OSTI]

    Shaqfeh, Eric

    The conformation change of model polymers in stochastic flow fields: Flow through fixed beds Alisa that as a polymer solution flows through a fixed bed, the pressure drop neces- sary to pump the solution may

  11. Investigation of the June 29, 2012, Fall from a Fixed Ladder...

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

    the fixed ladder and fell from a height of approximately 15-feet landing on asphalt pavement. Investigation of the June 29, 2012, Fall from a Fixed Ladder at Building 830, at the...

  12. A Lesson Learned on Determination of Radionuclides on Metal Surface Fixed Contamination

    SciTech Connect (OSTI)

    MEZNARICH, H.K.

    2000-02-01T23:59:59.000Z

    A Measurement of fixed surface contamination required to determine classification as low-level or as transuranic waste.

  13. Raspberry derived mesoporous carbon-tubules and fixed-bed adsorption of pharmaceutical drugs

    E-Print Network [OSTI]

    Ma, Lena

    Raspberry derived mesoporous carbon-tubules and fixed-bed adsorption of pharmaceutical drugs Shashi Accepted 28 June 2013 Available online 22 July 2013 Keywords: Carbon-tubules Fixed-bed Mesoporous Octanol selected for the study. Batch and fixed-bed studies were performed to investigate the adsorption

  14. Drop breakup in the flow through fixed fiber beds: An experimental and computational investigation

    E-Print Network [OSTI]

    Shaqfeh, Eric

    Drop breakup in the flow through fixed fiber beds: An experimental and computational investigation; accepted 11 January 2003; published 2 April 2003 Dilute fixed fiber beds provide a model system. DOI: 10.1063/1.1557051 I. INTRODUCTION As drops are carried by a suspending fluid through a fixed bed

  15. Drop breakup in the flow through fixed beds via stochastic simulation in model Gaussian fields

    E-Print Network [OSTI]

    Shaqfeh, Eric

    Drop breakup in the flow through fixed beds via stochastic simulation in model Gaussian fields that the flow through a dilute disordered fixed bed of fibers produces large polymer conformation change beyond on the shape and breakup of viscous drops. Because the flow through a dilute fixed bed is equivalent

  16. Dynamic modeling of three-phase upflow fixed-bed reactor including pore diffusion C. Julcoura

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Dynamic modeling of three-phase upflow fixed-bed reactor including pore diffusion C. Julcoura , R-phase upflow fixed-bed reactor are investigated using a non-isothermal heterogeneous model including gas not limiting, so that the simplest model predicts accurately the transient reactor behavior. Keywords: fixed-bed

  17. Strain Accommodation By Facile WO6 Octahedral Distortion and Tilting During WO3 Heteroepitaxy on SrTiO3(001)

    SciTech Connect (OSTI)

    Du, Yingge; Gu, Meng; Varga, Tamas; Wang, Chong M.; Bowden, Mark E.; Chambers, Scott A.

    2014-08-27T23:59:59.000Z

    In this paper, we show that compared to other BO6 octahedra in ABO3 structured perovskite oxides, the WO6 octahedra in tungsten trioxide (WO3) can withstand a much larger degree of distortion and tilting to accommodate interfacial strain, which in turn strongly impact the nucleation, structure, and defect formation during the epitaxial growth of WO3 on SrTiO3(001). A meta-stable tetragonal phase can be stabilized by epitaxy and a thickness dependent phase transition (tetragonal to monoclinic) is observed. In contrast to misfit dislocations to accommodate the interfacial stain, the facial WO6 octahedral distortion and tilting give rise to three types of planar defects that affect more than 15 monolayers from the interface. These atomically resolved, unusual interfacial defects may significantly alter the electronic, electrochromic, and mechanical properties of the epitaxial films.

  18. Magnetoresistivity and acoustoelectronic effects in a tilted magnetic field in p-Si/SiGe/Si structures with an anisotropic g factor

    SciTech Connect (OSTI)

    Drichko, I. L., E-mail: Irina.L.Drichko@mail.ioffe.ru; Smirnov, I. Yu. [Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation); Suslov, A. V. [National High Magnetic Field Laboratory (United States); Mironov, O. A. [University of Warwick Science Park, Warwick SEMINANO R and D Centre (United Kingdom); Leadley, D. R. [University of Warwick Science Park, Department of Physics (United Kingdom)

    2010-09-15T23:59:59.000Z

    Magnetoresistivity {rho}{sub xx} and {rho}{sub xy} and the acoustoelectronic effects are measured in p-Si/SiGe/Si with an impurity concentration p = 1.99 x 10{sup 11} cm{sup -2} in the temperature range 0.3-2.0 K and an tilted magnetic field up to 18 T. The dependence of the effective g factor on the angle of magnetic field tilt {theta} to the normal to the plane of a two-dimensional p-Si/SiGe/Si channel is determined. A first-order ferromagnet-paramagnet phase transition is observed in the magnetic fields corresponding to a filling factor {nu} = 2 at {theta} {approx} 59{sup o}-60{sup o}.

  19. Magnetoresistivity in a tilted magnetic field in p-Si/SiGe/Si heterostructures with an anisotropic g-factor. Part II

    SciTech Connect (OSTI)

    Drichko, I. L.; Smirnov, I. Yu., E-mail: ivan.smirnov@mail.ioffe.ru [Russian Academy of Sciences, Ioffe Physicotechnical Institute (Russian Federation); Suslov, A. V. [National High Magnetic Field Laboratory (United States); Mironov, O. A. [University of Warwick Science Park, Warwick SEMINANO R and D Centre (United Kingdom); Leadley, D. R. [University of Warwick, Department of Physics (United Kingdom)

    2012-09-15T23:59:59.000Z

    The magnetoresistance components {rho}xx and {rho}xy are measured in two p-Si/SiGe/Si quantum wells that have an anisotropic g-factor in a tilted magnetic field as a function of the temperature, field, and tilt angle. Activation energy measurements demonstrate the existence of a ferromagnetic-paramagnetic (F-P) transition for the sample with the hole density p = 2 Multiplication-Sign 10{sup 11} cm{sup -2}. This transition is due to the crossing of the 0{up_arrow} and 1{down_arrow} Landau levels. However, in another sample with p = 7.2 Multiplication-Sign 10{sup 10} cm{sup -2}, the 0{up_arrow} and 1{down_arrow} Landau levels coincide for angles {theta} = 0-70 Degree-Sign . Only for {theta} > 70 Degree-Sign do the levels start to diverge which, in turn, results in the energy gap opening.

  20. Automatic recovery of missing amplitudes and phases in tilt-limited electron crystallography of two-dimensional crystals

    SciTech Connect (OSTI)

    Gipson, Bryant R.; Stahlberg, Henning [Center for Cellular Imaging and Nano Analytics (C-CINA), Biozentrum, University Basel, WRO-1058 Mattenstrasse 26, CH-4058 Basel (Switzerland); Masiel, Daniel J.; Browning, Nigel D. [Department of Chemical Engineering and Materials Sciences, University of California at Davis, Davis, California 95616 (United States); Spence, John [Department of Physics, Arizona State University, Tempe, Arizona 85287 (United States); Mitsuoka, Kaoru [Biomedicinal Information Research Center (BIRC), National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26, Aomi, Koto-ku, Tokyo 135-0064 (Japan)

    2011-07-15T23:59:59.000Z

    Electron crystallography of 2D protein crystals provides a powerful tool for the determination of membrane protein structure. In this method, data is acquired in the Fourier domain as randomly sampled, uncoupled, amplitudes and phases. Due to physical constraints on specimen tilting, those Fourier data show a vast un-sampled ''missing cone'' of information, producing resolution loss in the direction perpendicular to the membrane plane. Based on the flexible language of projection onto sets, we provide a full solution for these problems with a projective constraint optimization algorithm that, for sufficiently oversampled data, produces complete recovery of unmeasured data in the missing cone. We apply this method to an experimental data set of Bacteriorhodopsin and show that, in addition to producing superior results compared to traditional reconstruction methods, full, reproducible, recovery of the missing cone from noisy data is possible. Finally, we present an automatic implementation of the refinement routine as open source, freely distributed, software that will be included in our 2dx software package.

  1. Investigation of Copper Segregation to the S5(310)/[001] Symmetric Tilt Grain Boundary (STGB) in Aluminum

    SciTech Connect (OSTI)

    Plitzko, J.M.; Campbell, G.H.; King, W.E.; Foiles, S.M.

    1999-11-15T23:59:59.000Z

    The {Sigma}5 (310)/[001] symmetric tilt grain boundary (STGB) in the face centered cubic (FCC) metal aluminum with 1at% copper has been studied. The model grain boundary has been fabricated by ultra-high vacuum diffusion bonding of alloy single crystals. The segregation of the copper has been encouraged by annealing the sample after bonding at 200 C. TEM samples of this FCC-material were prepared with a new low voltage ion mill under very low angles. The atomic structure of the {Sigma}5 (310)/[001] STGB for this system was modeled with electronic structure calculations. These theoretical calculations of this interface structure indicate that the Cu atoms segregate to distinct sites at the interface. High resolution electron microscopy (HRTEM) and analytical electron microscopy including electron energy spectroscopic imaging and X-ray energy dispersive spectrometry have been used to explore the segregation to the grain boundary. The HRTEM images and the analytical measurements were performed using different kinds of microscopes, including a Philips CM300 FEG equipped with an imaging energy filter. The amount of the segregated species at the interface was quantified in a preliminary way. To determine the atomic positions of the segregated atoms at the interface, HRTEM coupled with image simulation and a first attempt of a holographic reconstruction from a through-focal series have been used.

  2. Should mobile Internet services be an extension of the fixed Internet? Context-of-use, fixed-mobile reinforcement and personal innovativeness

    E-Print Network [OSTI]

    Twente, Universiteit

    reinforcement and personal innovativeness Mark de Reuver Faculty Technology, Policy and Management Delft Innovation & Interaction Utrecht, The Netherlands Harry Bouwman Faculty Technology, Policy and ManagementShould mobile Internet services be an extension of the fixed Internet? Context-of-use, fixed-mobile

  3. Grate assembly for fixed-bed coal gasifier

    DOE Patents [OSTI]

    Notestein, John E. (Morgantown, WV)

    1993-01-01T23:59:59.000Z

    A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.

  4. Fixed point of second virial coefficients in the glass transition

    E-Print Network [OSTI]

    Jialin Wu

    2007-01-16T23:59:59.000Z

    Classical thermodynamic theory still holds true in subsystem that is a percolation connected by 8 orders of self-similar 2-body-3-body coupling clusters. The fixed point, $B_2^* \\equiv 3/8$, for the clusters of different size, existing in reduced second Virial coefficients has been proved by scaling theory in percolation field. It is shown that, if $B_2^* \\equiv 3/8$ is combined with $B_3^* \\equiv 5/8$, the potentials of 2-body-3-body coupling clusters, in critical local cluster growth phase transition, balance the kinetic energy in the glass transition. It is also proved that the glass transition corresponds to the regime in which the chemical potentials in all subsystems hold zero.

  5. Ash level meter for a fixed-bed coal gasifier

    DOE Patents [OSTI]

    Fasching, George E. (Morgantown, WV)

    1984-01-01T23:59:59.000Z

    An ash level meter for a fixed-bed coal gasifier is provided which utilizes the known ash level temperature profile to monitor the ash bed level. A bed stirrer which travels up and down through the extent of the bed ash level is modified by installing thermocouples to measure the bed temperature as the stirrer travels through the stirring cycle. The temperature measurement signals are transmitted to an electronic signal process system by an FM/FM telemetry system. The processing system uses the temperature signals together with an analog stirrer position signal, taken from a position transducer disposed to measure the stirrer position to compute the vertical location of the ash zone upper boundary. The circuit determines the fraction of each total stirrer cycle time the stirrer-derived bed temperature is below a selected set point, multiplies this fraction by the average stirrer signal level, multiplies this result by an appropriate constant and adds another constant such that a 1 to 5 volt signal from the processor corresponds to a 0 to 30 inch span of the ash upper boundary level. Three individual counters in the processor store clock counts that are representative of: (1) the time the stirrer temperature is below the set point (500.degree. F.), (2) the time duration of the corresponding stirrer travel cycle, and (3) the corresponding average stirrer vertical position. The inputs to all three counters are disconnected during any period that the stirrer is stopped, eliminating corruption of the measurement by stirrer stoppage.

  6. Isolated thermocouple amplifier system for stirred fixed-bed gasifier

    DOE Patents [OSTI]

    Fasching, George E. (Morgantown, WV)

    1992-01-01T23:59:59.000Z

    A sensing system is provided for determining the bed temperature profile of the bed of a stirred, fixed-bed gasifier including a plurality of temperature sensors for sensing the bed temperature at different levels, a transmitter for transmitting data based on the outputs of the sensors to a remote operator's station, and a battery-based power supply. The system includes an isolation amplifier system comprising a plurality of isolation amplifier circuits for amplifying the outputs of the individual sensors. The isolation amplifier circuits each comprise an isolation operational amplifier connected to a sensor; a first "flying capacitor" circuit for, in operation, controlling the application of power from the power supply to the isolation amplifier; an output sample and hold circuit connected to the transmitter; a second "flying capacitor" circuit for, in operation, controlling the transfer of the output of the isolation amplifier to the sample and hold circuit; and a timing and control circuit for activating the first and second capacitor circuits in a predetermined timed sequence.

  7. Flame quality monitor system for fixed firing rate oil burners

    DOE Patents [OSTI]

    Butcher, Thomas A. (Pt. Jefferson, NY); Cerniglia, Philip (Moriches, NY)

    1992-01-01T23:59:59.000Z

    A method and apparatus for determining and indicating the flame quality, or efficiency of the air-fuel ratio, in a fixed firing rate heating unit, such as an oil burning furnace, is provided. When the flame brightness falls outside a preset range, the flame quality, or excess air, has changed to the point that the unit should be serviced. The flame quality indicator output is in the form of lights mounted on the front of the unit. A green light indicates that the flame is about in the same condition as when the burner was last serviced. A red light indicates a flame which is either too rich or too lean, and that servicing of the burner is required. At the end of each firing cycle, the flame quality indicator goes into a hold mode which is in effect during the period that the burner remains off. A yellow or amber light indicates that the burner is in the hold mode. In this mode, the flame quality lights indicate the flame condition immediately before the burner turned off. Thus the unit can be viewed when it is off, and the flame condition at the end of the previous firing cycle can be observed.

  8. In celebration of the fixed target program with the Tevatron

    SciTech Connect (OSTI)

    Jeffrey A. Appel et al.

    2001-12-28T23:59:59.000Z

    The Tevatron is the world's first large superconducting accelerator. With its construction, we gained the dual opportunities to advance the state of the art in accelerator technology with the machine itself and in particle physics with the experiments that became possible in a higher energy regime. There have been 43 experiments in the Tevatron fixed target program. Many of these are better described as experimental programs, each with a broad range of physics goals and results, and more than 100 collaborating physicists and engineers. The results of this program are three-fold: (1) new technologies in accelerators, beams and detectors which advanced the state of the art; (2) new experimental results published in the refereed physics journals; and (3) newly trained scientists who are both the next generation of particle physicists and an important part of the scientific, technical and educational backbone of the country as a whole. In this book they compile these results. There are sections from each experiment including what their physics goals and results were, what papers were published, and which students have received degrees. Summaries of these results from the program as a whole are quite interesting, but the physics results from this program are too broad to summarize globally. The most important of the results appear in later sections of this booklet.

  9. Fixed-bed bioreactor system for the microbial solubilization of coal

    DOE Patents [OSTI]

    Scott, C.D.; Strandberg, G.W.

    1987-09-14T23:59:59.000Z

    A fixed-bed bioreactor system for the conversion of coal into microbially solubilized coal products. The fixed-bed bioreactor continuously or periodically receives coal and bio-reactants and provides for the large scale production of microbially solubilized coal products in an economical and efficient manner. An oxidation pretreatment process for rendering coal uniformly and more readily susceptible to microbial solubilization may be employed with the fixed-bed bioreactor. 1 fig., 1 tab.

  10. RELIABILITY BASED DESIGN OF FIXED FOUNDATION WIND TURBINES

    SciTech Connect (OSTI)

    Nichols, R.

    2013-10-14T23:59:59.000Z

    Recent analysis of offshore wind turbine foundations using both applicable API and IEC standards show that the total load demand from wind and waves is greatest in wave driven storms. Further, analysis of overturning moment loads (OTM) reveal that impact forces exerted by breaking waves are the largest contributor to OTM in big storms at wind speeds above the operating range of 25 m/s. Currently, no codes or standards for offshore wind power generators have been adopted by the Bureau of Ocean Energy Management Regulation and Enforcement (BOEMRE) for use on the Outer Continental Shelf (OCS). Current design methods based on allowable stress design (ASD) incorporate the uncertainty in the variation of loads transferred to the foundation and geotechnical capacity of the soil and rock to support the loads is incorporated into a factor of safety. Sources of uncertainty include spatial and temporal variation of engineering properties, reliability of property measurements applicability and sufficiency of sampling and testing methods, modeling errors, and variability of estimated load predictions. In ASD these sources of variability are generally given qualitative rather than quantitative consideration. The IEC 61400‐3 design standard for offshore wind turbines is based on ASD methods. Load and resistance factor design (LRFD) methods are being increasingly used in the design of structures. Uncertainties such as those listed above can be included quantitatively into the LRFD process. In LRFD load factors and resistance factors are statistically based. This type of analysis recognizes that there is always some probability of failure and enables the probability of failure to be quantified. This paper presents an integrated approach consisting of field observations and numerical simulation to establish the distribution of loads from breaking waves to support the LRFD of fixed offshore foundations.

  11. Arbitrage With Fixed Costs" and Interest Rate Models Elys JOUINI Clotilde NAPPy

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Arbitrage With Fixed Costs" and Interest Rate Models Elyès JOUINI Clotilde NAPPy June 26, 2007 Congress participants and in particular D. Feldman. 1 #12;Arbitrage With "Fixed Costs" and Interest Rate Models Abstract In this paper, we study securities market models with "...xed costs." We characterize

  12. Key Factors for Information Dissemination on Communicating Products and Fixed Databases

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Key Factors for Information Dissemination on Communicating Products and Fixed Databases Sylvain, a multitude of informational vectors take place in such environments like fixed databases or manufactured products on which we are able to em- bed significant proportion of data. By considering distributed

  13. When Auction Meets Fixed Price: A Theoretical and Empirical Examination of Buy-it-Now

    E-Print Network [OSTI]

    Faloutsos, Christos

    such as the customer's cost of participating in the auction, the seller's reserve price, and the number of potential design. Economists advocate the efficiency of auctions over fixed price markets when auction costsWhen Auction Meets Fixed Price: A Theoretical and Empirical Examination of Buy-it-Now Auctions Xin

  14. Joint Turbo Equalization and Channel Estimation with Fixed-Lag Extended Kalman Filtering

    E-Print Network [OSTI]

    Wong, Tan F.

    Joint Turbo Equalization and Channel Estimation with Fixed-Lag Extended Kalman Filtering Xin Li. In the receiver, a fixed-lag Kalman equalizer jointly estimates the channel and equalizes the data symbols channel estimators employing least mean squares (LMS), recursive least squares (RLS) and Kalman filtering

  15. Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting

    E-Print Network [OSTI]

    Boyer, Edmond

    Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting Yasmina sufficient schedulability tests for fixed-priority pre-emptive scheduling of a real-time system under energy constraints. In this problem, energy is harvested from the ambient environment and used to replenish a storage

  16. Energy-efficient Multicasting in Wireless Networks with Fixed Node Transmission Power

    E-Print Network [OSTI]

    Varvarigo, Emmanouel "Manos"

    Energy-efficient Multicasting in Wireless Networks with Fixed Node Transmission Power Christos Computer Technology Institute, Greece manos@ceid.upatras.gr ABSTRACT In this work, we propose an energy-efficient are fixed. Our algorithm is based on the multicost approach and selects an optimal energy-efficient set

  17. Schedulability Analysis for Fixed Priority Real-Time Systems with Energy-Harvesting

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Schedulability Analysis for Fixed Priority Real-Time Systems with Energy-Harvesting Yasmina sufficient schedulability tests for fixed-priority pre-emptive scheduling of a real-time system under energy constraints. In this problem, energy is harvested from the ambient environment and used to replenish a storage

  18. The Advantages of Fixed Facilities in Characterizing TRU Wastes

    SciTech Connect (OSTI)

    FRENCH, M.S.

    2000-02-08T23:59:59.000Z

    In May 1998 the Hanford Site started developing a program for characterization of transuranic (TRU) waste for shipment to the Waste Isolation Pilot Plant (WIPP) in New Mexico. After less than two years, Hanford will have a program certified by the Carlsbad Area Office (CAO). By picking a simple waste stream, taking advantage of lessons learned at the other sites, as well as communicating effectively with the CAO, Hanford was able to achieve certification in record time. This effort was further simplified by having a centralized program centered on the Waste Receiving and Processing (WRAP) Facility that contains most of the equipment required to characterize TRU waste. The use of fixed facilities for the characterization of TRU waste at sites with a long-term clean-up mission can be cost effective for several reasons. These include the ability to control the environment in which sensitive instrumentation is required to operate and ensuring that calibrations and maintenance activities are scheduled and performed as an operating routine. Other factors contributing to cost effectiveness include providing approved procedures and facilities for handling hazardous materials and anticipated contingencies and performing essential evolutions, and regulating and smoothing the work load and environmental conditions to provide maximal efficiency and productivity. Another advantage is the ability to efficiently provide characterization services to other sites in the Department of Energy (DOE) Complex that do not have the same capabilities. The Waste Receiving and Processing (WRAP) Facility is a state-of-the-art facility designed to consolidate the operations necessary to inspect, process and ship waste to facilitate verification of contents for certification to established waste acceptance criteria. The WRAP facility inspects, characterizes, treats, and certifies transuranic (TRU), low-level and mixed waste at the Hanford Site in Washington state. Fluor Hanford operates the $89 million facility under the Project Hanford Management Contract. This paper describes the operating experiences and results obtained during the first year of full operations at WRAP. Interested audiences include personnel involved in TRU waste characterization activities, TRU waste treatment and disposal facilities and TRU waste certification. The conclusions of this paper are that WRAP has proven itself to be a valuable asset for low-level and TRU waste management.

  19. Operational experience using the novel FixCup collecting main valve

    SciTech Connect (OSTI)

    Giertz, J.; Huhn, F. [DMT-Gesellschaft fuer Forschung und Pruefung mbH, Essen (Germany). Inst. for Cokemaking and Fuel Technology; Spitz, J. [Thyssen Stahl AG, Duisburg (Germany)

    1996-12-31T23:59:59.000Z

    On the occasion of the 1995 AIME conference the new PROven (Pressure Regulated Oven) process to control the pressure in coke ovens individually was introduced. This process was made feasible with a new collecting main valve, termed FixCup, with the aid of this valve a variable flow resistance to the raw gas discharge can be realized using a water immersion system. However, just the application of the FixCup system alone--without any pressure regulation--is very advantageous and cost saving. Thyssen has equipped 30 ovens with the new valve. The special constructive features as well as the operational experience using the FixCup valve are treated.

  20. Comparative genomics and natural distributions of phenotypically distinct strains of the nitrogen-fixing cyanobacterium Crocosphaera watsonii

    E-Print Network [OSTI]

    Bench, Shellie

    2012-01-01T23:59:59.000Z

    in the subtropical North Pacific Ocean. Nature 412:635- 38.fixing bacteria in the Pacific Ocean. Limnol. Oceanogr. 53:fixing bacteria in the Pacific Ocean. Limnol. Oceanogr. 53,

  1. Breaking the Crowther Limit: Combining Depth-Sectioning and Tilt Tomography for High-Resolution, Wide-Field 3D Reconstructions

    E-Print Network [OSTI]

    Hovden, Robert; Jiang, Yi; Wang, Deli; Yu, Yingchao; Abruna, Hector D; Elser, Veit; Muller, David A

    2014-01-01T23:59:59.000Z

    To date, high-resolution ( 6 nm) to appear blurred or missing. Here we demonstrate a three-dimensional imaging method that overcomes both these limits by combining through-focal depth sectioning and traditional tilt-series tomography to reconstruct extended objects, with high-resolution, in all three dimensions. The large convergence angle in aberration corrected instruments now becomes a benefit and not a hindrance to higher quality reconstructions. A through-focal reconstruction over a 390 nm 3D carbon support containing over one hundred dealloyed and nanoporous PtCu catalyst particles revealed with sub-nanometer detail the extensive and connected interior pore structure that is created by the dealloying instability.

  2. Observational evidence for a changing tilt of the accretion disk with respect to the orbital plane in Her X-1 over its 35 day cycle

    E-Print Network [OSTI]

    D. Klochkov; N. Shakura; K. Postnov; R. Staubert; J. Wilms; N. Ketsaris

    2007-11-12T23:59:59.000Z

    Analysis and interpretation of the Her X-1 X-ray light curve obtained with the ASM onbord RXTE over the period 1996 February to 2004 September is presented. We report that the features found previously in the averaged X-ray lightcurve are confirmed by the new RXTE/ASM data. In particular, anomalous dips and post-eclipse recoveries in two successive orbits in the short-on state are found to be prominent and stable details of the light curve. We argue that a change of the tilt of the accretion disk over the 35-day period is necessary to account for these features and show that our numerical model can explain such a behavior of the disk and reproduce the observed details of the light curve.

  3. An investigation of fixed separation in quasi-periodic and aperiodic, unsteady, two-dimensional flows

    E-Print Network [OSTI]

    Helu, Moneer Mohammad

    2007-01-01T23:59:59.000Z

    This study asses the kinematic theory of fixed separation in unsteady, two-dimensional flows that has been proposed by Haller (2004). Experimental investigations were conducted that utilized the rotor-oscillator flow to ...

  4. Model Checking Fixed Point Logic with Chop Martin Lange and Colin Stirling

    E-Print Network [OSTI]

    Stirling, Colin

    for Foundations of Computer Science Division of Informatics University of Edinburgh {martin,cps, properties expressed by L µ formulas are essentially ``regular''. In [9], MË?uller­Olm introduced FLC, fixed

  5. Model Checking Fixed Point Logic with Chop Martin Lange and Colin Stirling

    E-Print Network [OSTI]

    Stirling, Colin

    for Foundations of Computer Science Division of Informatics University of Edinburgh {martin,cps, properties expressed by �µ formulas are essentially "regular". In [9], M¨uller-Olm introduced FLC, fixed

  6. Coordinating Inventory Control and Pricing Strategies with Random Demand and Fixed

    E-Print Network [OSTI]

    Chen, Xin

    Coordinating Inventory Control and Pricing Strategies with Random Demand and Fixed Ordering Cost, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 1. Introduction Traditional inventory strategies to manage their inventory effectively. For example, techniques such as revenue management have

  7. Fixing and pelleting chromatin/nuclei from extracts onto coverslips for immunofluorescence

    E-Print Network [OSTI]

    Mitchison, Tim

    Fixing and pelleting chromatin/nuclei from extracts onto coverslips for immunofluorescence Arshad. poly-lysine coated coverslips. 4. spin down tubes (or equivalent method to pellet onto coverslips; our

  8. FAIR MATCHING ALGORITHM: FIXED-LENGTH FRAME SCHEDULING IN ALL-PHOTONIC NETWORKS

    E-Print Network [OSTI]

    FAIR MATCHING ALGORITHM: FIXED-LENGTH FRAME SCHEDULING IN ALL-PHOTONIC NETWORKS Nahid Saberi email:nahid.saberi@mail.mcgill.ca, coates@ece.mcgill.ca Abstract Internal switches in all

  9. VaR Constrained Hedging of Fixed Price Load-Following Obligations in Competitive

    E-Print Network [OSTI]

    VaR Constrained Hedging of Fixed Price Load-Following Obligations in Competitive Electricity. In either case the entity holding the load following obligation is exposed to the load variation

  10. Vibrational characteristics of a long and very flexible rotating fixed-free beam

    E-Print Network [OSTI]

    Zarco Cruz, Juan Carlos

    2003-01-01T23:59:59.000Z

    The differential eigenvalue problem of a long and very flexible rotating fixed-free beam is studied. This kind of system produces a singular perturbation equation with a turning point. The perturbation factor arises because of the division...

  11. EM Finds Success with Fixed-Priced Hybrid Contract Approach Benefittin...

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

    successful at the Hanford site. The Hanford success story marked EM's latest use of a hybrid fixed-price contract. The estimated 99 million contract went to HPM Corp., a...

  12. Anderson-Gregory; Constable-Steven; Orcutt-John; Staudigel-Hubert; Tolstoy-Maya; Wyatt-Frank-K, Observing seafloor tilt on Axial Segment, Juan de Fuca Ridge. Eos, Transactions, American Geophysical

    E-Print Network [OSTI]

    Menke, William

    -Frank-K, Observing seafloor tilt on Axial Segment, Juan de Fuca Ridge. Eos, Transactions, American Geophysical Union de Fuca Ridge. Geophysical Research Letters.22; 2, Pages 147-150. 1995. Baker-Edward-T; Fox eruption of Axial Volcano, Juan de Fuca Ridge. Geophysical Research Letters.26; 23, Pages 3445-3448. 1999

  13. JOURNAL DE PHYSIQUE Colloque C1, supplgment au no2, Tome 40,fgvrier 1979,page C1-295 POLARIZATION MEASUREMENTS OF TWO He I TRANSITIONS USING BEAM-TILTED-FOIL EXCITATION*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    these measure- ments, for at least two transitions, to try to establish a trend through as large a foil tilt be rotated by a step- ping motor with reproducibility of axis position of 0.1'. The entrance and exit slits acquisition and experimental control have been previously described.' Nominally 5 ug/cm2 carbon foils were

  14. Context Interchange Mediation for Semantic Interoperability and Dynamic Integration of Autonomous Information Sources in the Fixed Income Securities Industry

    E-Print Network [OSTI]

    Siegel, Michael

    2003-02-10T23:59:59.000Z

    We examine semantic interoperability problems in the fixed income securities industry and propose a knowledge representation architecture for context interchange ...

  15. The effect of velocity and porosity profiles on the performance of fixed bed reactors

    E-Print Network [OSTI]

    Amin, Kaushik

    1983-01-01T23:59:59.000Z

    OF SCIENCE December 1983 Major Subject: Chemical Engineering THE EFFECT OF VELOCITY AND POROSITY PROFILES ON THE PERFORMANCE OF FIXED BED REACTORS A Thesis by KAUSHIK AHIN Approved as to style and content by: R. G. Anthony (Chairman) Aydin german... (m r) R. H. Loeppert (member) C. D. 1 and (Head of the Dept. ) December 1983 ABSTRACT THE Effect of Velocity and Porosity Profiles on the Performance of Fixed Bed Reactors (December 1983) Kaushik Amin, B. S. , M. S. University of Barcda...

  16. Bound states for Overlap and Fixed Point Actions close to the chiral limit

    E-Print Network [OSTI]

    Stefan Haeusler; C. B. Lang

    2001-05-16T23:59:59.000Z

    We study the overlap and the fixed point Dirac operators for massive fermions in the two-flavor lattice Schwinger model. The masses of the triplet (pion) and singlet (eta) bound states are determined down to small fermion masses and the mass dependence is compared with various continuum model approximations. Near the chiral limit, at very small fermion masses the fixed point operator has stability problems, which in this study are dominated by finite size effects,

  17. Inverse fixed energy scattering problem for the two-dimensional nonlinear Schroedinger operator

    E-Print Network [OSTI]

    Georgios Fotopoulos; Valery Serov

    2014-12-01T23:59:59.000Z

    This work studies the direct and inverse fixed energy scattering problem for two-dimensional Schroedinger equation with rather general nonlinear index of refraction. In particular, using the Born approximation we prove that all singularities of the unknown compactly supported potential from $L^2$-space can be obtained uniquely by the scattering data with fixed positive energy. The proof is based on the new estimates for the Faddeev-Green's function in $L^\\infty$-space.

  18. Coulomb and Landau Gauge Fixing in GPUs using CUDA and MILC

    E-Print Network [OSTI]

    Cardoso, Nuno

    2014-01-01T23:59:59.000Z

    In this work, we present the GPU implementation of the overrelaxation and steepest descent method with Fourier acceleration methods for Laudau and Coulomb gauge fixing using CUDA for SU(N) with N>2. A multi-GPU implementation of the overrelaxation method is also presented using MPI and CUDA. The GPU performance was measured on BlueWaters and compared against the gauge fixing of the CPU MILC code.

  19. Coulomb and Landau Gauge Fixing in GPUs using CUDA and MILC

    E-Print Network [OSTI]

    Nuno Cardoso

    2015-04-03T23:59:59.000Z

    In this work, we present the GPU implementation of the overrelaxation and steepest descent method with Fourier acceleration methods for Laudau and Coulomb gauge fixing using CUDA for SU(N) with N>2. A multi-GPU implementation of the overrelaxation method is also presented using MPI and CUDA. The GPU performance was measured on BlueWaters and compared against the gauge fixing of the CPU MILC code.

  20. Turbulent flow and drag over fixed two-and three-dimensional dunes Jeremy G. Venditti1,2

    E-Print Network [OSTI]

    Venditti, Jeremy G.

    measurements of turbulent flow were obtained over a fixed flat bed, two- dimensional (2-D) dunes and four types over 2-D dunes conforms with previous observations of flow over mobile and fixed bed forms. Bed formTurbulent flow and drag over fixed two- and three-dimensional dunes Jeremy G. Venditti1,2 Received

  1. A Fixed Point Formulation of the k-Means Algorithm and a Connection to Mumford-Shah

    E-Print Network [OSTI]

    Bardsley, John

    A Fixed Point Formulation of the k-Means Algorithm and a Connection to Mumford-Shah Johnathan M of the k-means segmentation algorithm and show that the iteration's fixed points are solutions of the Euler between the k-means algorithm and Mumford- Shah segmentation via a fixed point formulation of k-means

  2. Finding Non-Zero Stable Fixed Points of the Weighted Kuramoto model is NP-hard

    E-Print Network [OSTI]

    Richard Taylor

    2015-02-24T23:59:59.000Z

    The Kuramoto model when considered over the full space of phase angles [$0,2\\pi$) can have multiple stable fixed points which form basins of attraction in the solution space. In this paper we illustrate the fundamentally complex relationship between the network topology and the solution space by showing that determining the possibility of multiple stable fixed points from the network topology is NP-hard for the weighted Kuramoto Model. In the case of the unweighted model this problem is shown to be at least as difficult as a number partition problem, which we conjecture to be NP-hard. We conclude that it is unlikely that stable fixed points of the Kuramoto model can be characterized in terms of easily computable network invariants.

  3. An Efficient Hybrid Power Control Algorithm for Capacity Improvement of CDMA-based Fixed Wireless Applications

    E-Print Network [OSTI]

    Zeeshan, Muhammad; Malik, Muhammad Yasir

    2011-01-01T23:59:59.000Z

    In Fixed Wireless Applications (FWA), the Code Division Multiple Access (CDMA) is the most promising candidate for wideband data access. The reason is the soft limit on the number of active mobile devices. Many Fixed Wireless Applications impose an upper bound on the BER performance which restricts the increase in number of mobile users. The number of active mobile users or Capacity is further reduced in Multipath Fading Environment (MFE). This paper presents an effective method of improving the capacity of CDMA based Fixed Wireless Networks by using a hybrid power control algorithm. The proposed scheme improves the capacity two times as compared to the conventional CDMA based networks. Simulation results have been presented to demonstrate the effectiveness of the proposed scheme.

  4. The four fixed points of scale invariant single field cosmological models

    SciTech Connect (OSTI)

    Xue, BingKan, E-mail: bxue@princeton.edu [Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)

    2012-10-01T23:59:59.000Z

    We introduce a new set of flow parameters to describe the time dependence of the equation of state and the speed of sound in single field cosmological models. A scale invariant power spectrum is produced if these flow parameters satisfy specific dynamical equations. We analyze the flow of these parameters and find four types of fixed points that encompass all known single field models. Moreover, near each fixed point we uncover new models where the scale invariance of the power spectrum relies on having simultaneously time varying speed of sound and equation of state. We describe several distinctive new models and discuss constraints from strong coupling and superluminality.

  5. Forces on a fixed barge due to Stokes 5th-Order laboratory waves

    E-Print Network [OSTI]

    Choi, Nag Joon

    2001-01-01T23:59:59.000Z

    FORCES ON A FIXED BARGE DUE TO STOKES 5 -ORDER LABORATORY WA VES A Thesis by NAG JOON CHOI 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 2001 Major Subject: Ocean Engineenng FORCES ON A FIXED BARGE DUE TO STOKES 5 n-ORDER LABORATORY WAVES A Thesis by NAGJOON CHOI Submitted to Texas ARM University in partial fulfillment of the requirements for the degree of MASTER...

  6. An Evaluation of the Effects of Fixed-Time Schedules on Response Maintenance

    E-Print Network [OSTI]

    Payne, Steven Wade

    2013-05-31T23:59:59.000Z

    it is currently unclear as to what mechanisms are responsible for this maintenance. The purposes of the current study were to (a) replicate previous research showing that responding will maintain under fixed-time (FT) schedules after a history of response...

  7. EVALUATION OF POTENTIAL TRANSIT SIGNAL PRIORITY BENEFITS ALONG A FIXED-TIME SIGNALIZED ARTERIAL

    E-Print Network [OSTI]

    Rakha, Hesham A.

    corridor, in Arlington, Virginia. The study uses the INTEGRATION microscopic traffic simulation model buses along the arterial, and to all buses within the study corridor. The priority logic that is considered in the study provides simple green extensions and green recalls within a fixed-time traffic signal

  8. Buying in a volatile market: variable or fixed price? Professor of Purchasing Management

    E-Print Network [OSTI]

    Vellekoop, Michel

    , in markets like money, stock or oil markets; sometimes they are rather lengthy, in markets like the steelBuying in a volatile market: variable or fixed price? Jan Telgen Professor of Purchasing Management Many commodities are bought in a volatile market, where the purchasing price changes constantly

  9. A fixed point formula of Lefschetz type in Arakelov geometry III: representations of

    E-Print Network [OSTI]

    Köhler, Kai

    A fixed point formula of Lefschetz type in Arakelov geometry III: representations We give a new proof of the Jantzen sum formula for integral repre- sentations of Chevalley formula of Lefschetz type in Arakelov geometry to generalized flag varieties. Our proof involves

  10. Carbon fixed during fumigation with elevated [CO2] (which was depleted in stable 13C isotope,

    E-Print Network [OSTI]

    Carbon fixed during fumigation with elevated [CO2] (which was depleted in stable 13C isotope, red in a sweetgum plantation after 11 years of CO2-enrichment. Global Change Biology, DOI: 10.1111/j.1365 in relatively deep soil. · Final harvest of the Oak Ridge National Laboratory free-air CO2-enrichment (FACE

  11. Cyclic Testing of Concrete-Filled Circular Steel Bridge Piers having Encased Fixed-Based Detail

    E-Print Network [OSTI]

    Bruneau, Michel

    Cyclic Testing of Concrete-Filled Circular Steel Bridge Piers having Encased Fixed-Based Detail elements during earthquakes, this paper reports on cyclic inelastic tests executed to determine the maximum strength and ductility of four concrete-filled circular steel piers joined to a foundation detail proposed

  12. A Systemic Design Methodology of PM Generators for Fixed-Pitch Marine Current Turbines

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    that for an offshore application and particularly for tidal power generation, enhancing reliability and reducing of permanent magnet (PM) generator associated with fixed-pitch turbine for tidal energy generation. The main of the drive-train. In offshore energy generation, the maintenance should be minimized as much as possible

  13. Fixed Priority Scheduling Strategies for Ambient Energy-Harvesting Embedded systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fixed Priority Scheduling Strategies for Ambient Energy-Harvesting Embedded systems Maryline Chetto the capability to harvest energy from the environment. The electrical energy which is available to power these devices changes over time and is limited by the size of the energy storage unit such as battery

  14. Thermodynamics in 2+1 flavor QCD with improved Wilson quarks by the fixed scale approach

    E-Print Network [OSTI]

    T. Umeda; S. Aoki; S. Ejiri; T. Hatsuda; K. Kanaya; Y. Maezawa; H. Ohno

    2012-12-06T23:59:59.000Z

    We study thermodynamic properties of 2+1 flavor QCD with improved Wilson quarks coupled with the RG improved Iwasaki glue, using the fixed scale approach. We present the results for the equation of state, renormalized Polyakov loop, and chiral condensate.

  15. Conformal Bootstrap Approach to O(N) Fixed Points in Five Dimensions

    E-Print Network [OSTI]

    Jin-Beom Bae; Soo-Jong Rey

    2014-12-19T23:59:59.000Z

    Whether O(N)-invariant conformal field theory exists in five dimensions with its implication to higher-spin holography was much debated. We find an affirmative result on this question by utilizing conformal bootstrap approach. In solving for the crossing symmetry condition, we propose a new approach based on specification for the low-lying spectrum distribution. We find the traditional one-gap bootstrapping is not suited since the nontrivial fixed point expected from large-N expansion sits at deep interior (not at boundary or kink) of allowed solution region. We propose two-gap bootstrapping that specifies scaling dimension of two lowest scalar operators. The approach carves out vast region of lower scaling dimensions and universally features two tips. We find that the sought-for nontrivial fixed point now sits at one of the tips, while the Gaussian fixed point sits at the other tip. The scaling dimensions of scalar operators fit well with expectation based on large-N expansion. We also find indication that the fixed point persist for lower values of N all the way down to N=1. This suggests that interacting unitary conformal field theory exists in five dimensions for all nonzero N.

  16. 1 Edgar Nett Mobile Computer Communication SS'10 Problems compared to fixed networks

    E-Print Network [OSTI]

    1 Edgar Nett Mobile Computer Communication SS'10 Problems compared to fixed networks Higher loss-Hoc-Networks routing, service localization, reachability #12;2 Edgar Nett Mobile Computer Communication SS'10 Layering: The philosopher-translator-secretary architecture #12;3 Edgar Nett Mobile Computer Communication SS'10 source

  17. Simplified solutions of the Cox-Thompson inverse scattering method at fixed energy

    E-Print Network [OSTI]

    Tamas Palmai; Miklos Horvath; Barnabas Apagyi

    2011-11-25T23:59:59.000Z

    Simplified solutions of the Cox-Thompson inverse quantum scattering method at fixed energy are derived if a finite number of partial waves with only even or odd angular momenta contribute to the scattering process. Based on new formulae various approximate methods are introduced which also prove applicable to the generic scattering events.

  18. Effects of sea severity on wave-overtopping for FPSO fixed in head seas

    E-Print Network [OSTI]

    Bakrawala, Murtaza A.

    2003-01-01T23:59:59.000Z

    A series of experiments applying regular linear, nonlinear waves (Stokes 5th order-like) and random waves on a fixed FPSO model were performed in the wave-flume tank. Statistical information was gathered for wave overtopping of extreme waves...

  19. A description of auto-fixed subgroups in a free A. Martino a

    E-Print Network [OSTI]

    Ventura, Enric

    A description of auto-fixed subgroups in a free group A. Martino a , E. Ventura b aDept. of Math(F)/Inn(F) is the outer Email addresses: AMartino@crm.es (A. Martino), enric.ventura@upc.es (E. Ventura). Preprint

  20. Selective hydrogenation of 1,5,9-cyclododecatriene in up-flow and down-flow fixed bed reactors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Selective hydrogenation of 1,5,9-cyclododecatriene in up-flow and down-flow fixed bed reactors, trickle-bed, modeling, selective hydrogenation. INTRODUCTION For many years fixed bed reactors with co and flooded bed reactors has been investigated and compared for an exothermic multi- step catalytic reaction

  1. Relative performance of body fitted and fictitious domain simulations of flow through fixed packed beds of spheres

    E-Print Network [OSTI]

    Apte, Sourabh V.

    porescale flow in complex configurations of fixed packed beds of spheres at moderate pore Reynolds numbersRelative performance of body fitted and fictitious domain simulations of flow through fixed packed beds of spheres Justin Finn , Sourabh V. Apte School of Mechanical Industrial and Manufacturing

  2. Stability of the numerical method of solving the 3D inverse scattering problem with fixed-energy data

    E-Print Network [OSTI]

    Stability of the numerical method of solving the 3D inverse scattering problem with fixed- energy Collections Journals About Contact us My IOPscience #12;Inverse Problems 6 (1990) L7-LI2. Printed in the UK with fixed-energy data A G Ramm Mathematics Department, Kansas State University, Manhattan, KS 66506, USA

  3. >300GHz Fixed-Frequency and Voltage-Controlled Fundamental Oscillators in an InP DHBT Process

    E-Print Network [OSTI]

    Rodwell, Mark J. W.

    >300GHz Fixed-Frequency and Voltage-Controlled Fundamental Oscillators in an InP DHBT Process, 93106, USA Abstract -- We report fundamental fixed-frequency and voltage-controlled oscillators bandwidth. Index Terms -- Millimeter-wave oscillators, voltage-controlled oscillators, MMIC oscillators. I

  4. Execution timesand execution jitter analysis of real-time tasks under fixed-priority pre-emptive scheduling

    E-Print Network [OSTI]

    Bril, Reinder J.

    Execution timesand execution jitter analysis of real-time tasks under fixed-priority pre In this paper, we present worst-case and best-case execution times and (absolute) execution jitter analysis fixed-priority pre-emptive scheduling (FPPS), arbitrary phasing, (absolute) activation jitter

  5. Solar tracker motor having a fixed caliper and a translating caliper each with an electromagnetic brake system

    DOE Patents [OSTI]

    Rau, Scott James

    2013-01-29T23:59:59.000Z

    Concepts and technologies described herein provide for an accurate and cost-effective method for rotating a solar array disk for tracking the movement of the sun. According to various aspects, a motor includes a fixed caliper and a translating caliper positioned adjacent to one another. Electromagnetically controlled brakes on the translating caliper grip the solar array disk while adjacent, but spaced apart, electromagnets on the fixed caliper and the translating caliper are energized to create an attractive force that pulls the translating caliper with the solar array disk toward the fixed caliper. After reaching the fixed caliper, brakes on the fixed caliper are engaged with the disk, brakes on the translating caliper are released from the disk, and the translating caliper is pushed back to the starting location where the process repeats until the desired rotation is completed.

  6. Development and Deployment of Fixed Wireless Access in South West Nigeria: Performance and Evaluation

    E-Print Network [OSTI]

    Adeniran, Oluwaranti

    2011-01-01T23:59:59.000Z

    Fixed Wireless Access (FWA) involves the use of wireless technology to replace copper to connect subscribers to the telephone network. It is a variant of wireless broadband which provides an alternative in the so-called 'last mile' connectivity between the subscriber and the fixed telecommunications network. FWA could either be narrowband or broadband and it is predominantly deployed using the Code Division Multiple Access (CDMA) technology. In assessing the extent of development and deployment of FWA, the perspective of the operators and users was elicited primarily through the use of questionnaires. Issues like setup cost, tax, Government incentive, availability of infrastructure and manpower applied to the operators while on the users' part factors like quality of service, signal strength as well as call rate were considered. The South western zone of Nigeria is regarded as one of the most urbanized regions in the south of Sahara, this is not out of place considering the fact that Lagos which is the nation...

  7. Fixed-bed gasification research using US coals. Volume 9. Gasification of Elkhorn bituminous coal

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-05-01T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and governmental agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) group. This report is the ninth volume in a series of reports describing the atmospheric pressure, fixed-bed gasification of US coals. This specific report describes the gasification of Elkhorn bituminous coal. The period of gasificastion test was September 13 to October 12, 1983. 9 refs., 24 figs., 35 tabs.

  8. Fixed-bed gasification research using US coals. Volume 7. Gasification of Piney Tipple bituminous coal

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-05-01T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and governmental agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) Group. This report is the seventh volume in a series of reports describing the atmospheric pressure, fixed-bed gasification of US coals. This specific report describes the gasification of Piney Tipple bituminous coal. The period of the gasification test was July 18-24, 1983. 6 refs., 20 figs., 17 tabs.

  9. Memorandum, Managed Phase Out of Halon Fixed Fire Suppression Systems- May 5, 1993

    Broader source: Energy.gov [DOE]

    The purpose of this memorandum is to provide additional interim departmental criteria on the management of the reduction and potential elimination of Halon fire extinguishing systems within the Department of Energy (DOE). This memorandum supplements the joint Office of Safety and Quality Assurance/Office of Projects and Facilities Management memorandum of September 27, 1990, in which guidance was provided on the installation of new Halon 1301 fixed fire suppression systems and halon 1211 portable fire extinguishers.

  10. Continuous Profiles of Cloud Microphysical Properties for the Fixed Atmospheric Radiation Measurement Sites

    SciTech Connect (OSTI)

    Jensen, M; Jensen, K

    2006-06-01T23:59:59.000Z

    The Atmospheric Radiation Measurement (ARM) Program defined a specific metric for the third quarter of Fiscal Year 2006 to produce and refine a one-year continuous time series of cloud microphysical properties based on cloud radar measurements for each of the fixed ARM sites. To accomplish this metric, we used a combination of recently developed algorithms that interpret radar reflectivity profiles, lidar backscatter profiles, and microwave brightness temperatures into the context of the underlying cloud microphysical structure.

  11. 5d fixed points from brane webs and O7-planes

    E-Print Network [OSTI]

    Oren Bergman; Gabi Zafrir

    2015-07-14T23:59:59.000Z

    We explore the properties of five-dimensional supersymmetric gauge theories living on 5-brane webs in orientifold 7-plane backgrounds. These include $USp(2N)$ and $SO(N)$ gauge theories with fundamental matter, as well as $SU(N)$ gauge theories with symmetric and antisymmetric matter. We find a number of new 5d fixed point theories that feature enhanced global symmetries. We also exhibit a number of new 5d dualities.

  12. Towards Quantum Gravity: A Framework for Probabilistic Theories with Non-Fixed Causal Structure

    E-Print Network [OSTI]

    Lucien Hardy

    2006-08-09T23:59:59.000Z

    General relativity is a deterministic theory with non-fixed causal structure. Quantum theory is a probabilistic theory with fixed causal structure. In this paper we build a framework for probabilistic theories with non-fixed causal structure. This combines the radical elements of general relativity and quantum theory. The key idea in the construction is physical compression. A physical theory relates quantities. Thus, if we specify a sufficiently large set of quantities (this is the compressed set), we can calculate all the others. We apply three levels of physical compression. First, we apply it locally to quantities (actually probabilities) that might be measured in a particular region of spacetime. Then we consider composite regions. We find that there is a second level of physical compression for the composite region over and above the first level physical compression for the component regions. Each application of first and second level physical compression is quantified by a matrix. We find that these matrices themselves are related by the physical theory and can therefore be subject to compression. This is the third level of physical compression. This third level of physical compression gives rise to a new mathematical object which we call the causaloid. From the causaloid for a particular physical theory we can calculate verything the physical theory can calculate. This approach allows us to set up a framework for calculating probabilistic correlations in data without imposing a fixed causal structure (such as a background time). We show how to put quantum theory in this framework (thus providing a new formulation of this theory). We indicate how general relativity might be put into this framework and how the framework might be used to construct a theory of quantum gravity.

  13. Large Lagrangian Actions on Elliptical Solutions of 2-Body and 3-Body Problems with Fixed Energies

    E-Print Network [OSTI]

    Ying Lv; Shiqing Zhang

    2011-12-04T23:59:59.000Z

    Based on the works of Gordon ([4]) and Zhang-Zhou([8])) on the variational minimizing properties for Keplerian orbits and Lagrangian solutions of Newtonian 2-body and 3-body problems, we use the constrained variational principle of Ambrosetti-Coti Zelati ([1]) to compute the Lagrangian actions on Keplerian and Lagrangian elliptical solutions with fixed energies, we also find an interesting relationship between period and energy for Lagrangian elliptical solutions with Newtonian potentials.

  14. A non-equilibrium model for fixed-bed multi-component adiabatic adsorption

    E-Print Network [OSTI]

    Harwell, Jeffrey Harry

    1979-01-01T23:59:59.000Z

    to enter the bed. Solutions along a z ~ constant char- acteristic are the history of the. volumn element of the bed located a s constant, This physical interpretat1on is a physical approximation of the real world where adsorber discontinuities... 1 3. 3. 2 3e3e3 3. 3. 4 3. 3. 5 Solution of the multi-component adiabatic adsorption equation, . ~ ~ ~ Fluid phase equations. Fixed-bed solid phase equations. , ~ Construction of the solution surface by stepwise integra- tion...

  15. Analysis of the Newton-Sabatier scheme for inverting fixed-energy phase shifts

    E-Print Network [OSTI]

    A. G. Ramm

    2001-10-18T23:59:59.000Z

    It is proved that the Newton-Sabatier (NS) procedure does not solve the inverse scattering problem with fixed-energy data and is not a valid inversion method, in the following sense: 1) the basic integral equation, introduced by R. Newton without derivation, in general, may be not solvable for some $r>0$, and in this case NS procedure breaks down: it produces a potential which is not locally integrable. 2) the ansatz $(\\ast)$ $K(r,s) = \\sum^\\infty_{l=0} c_l \\phi_l (r) u_l (s)$, used by R. Newton, is incorrect: the transformation operator $I-K$, corresponding to a generic does not have $K$ of the form $(\\ast),$ and 3) the set of potentials $q \\in L_{1,1},$ that can possibly be obtained by NS procedure, is not dense in the set of all $L_{1,1}$ potentials in the norm of $L_{1,1}$. Therefore one cannot justify NS procedure even for approximate solution of the inverse scattering problem with fixed-energy phase shifts as data. Thus, the NS procedure, if considered as a method for solving the inverse scattering problem, is based on an incorrect ansatz, the basic integral equation of NS procedure is, in general, not solvable for some $r>0$, and in this case this procedure breaks down, and NS procedure is not an inversion theory: it cannot recover generic potentials $q \\in L_{1,1}$ from their fixed-energy phase shifts. Suppose now that one considers another problem: given fixed-energy phase shifts, corresponding to some potential, find a potential which generates the same phase shifts. Then NS procedure does not solve this problem either: the basic integral equation, in general, may be not solvable for some $r>0$, and then NS procedure breaks down.

  16. Comparison of fixed asymmetrical and symmetrical reflectors for evacuated tube solar receivers

    SciTech Connect (OSTI)

    Mills, D.R.; Monger, A. (Univ. of Sydney (Australia)); Morrison, G.L. (Univ. of New South Wales, Sydney (Australia))

    1994-07-01T23:59:59.000Z

    A computer simulation of the relative performance of certain truncated symmetrical and asymmetrical fixed reflector designs for solar energy collection was performed. The comparison was on the basis of annual energy delivered to a circular cylindrical evacuated tube receiver per unit of mirror area, but seasonal load information was also included to determine possible seasonal load matching advantages of one type of collector over another when storage is employed. Circumsolar radiation models based on recent correlations in the literature was included. Major conclusions were that: (1) Annual solar fractions of between 80% and 95% seem to be feasible with a load matching collector used with moderate energy storage, with 80-90% being a likely optimum; (2) CPC reflectors always gave the best annual output performance per unit of mirror area, and the lowest receiver area for situations of constant annual load, regardless of whether the storage is included in the system; (3) Asymmetrical concentrator are more cost-effective for strongly seasonally asymmetrical load patterns; (4) Fixed parabolic systems required much more receiver area than the symmetrical CPC and asymmetrical system investigated; (5) Concentration levels utilizable in fixed systems are higher than previously supposed, with 3.5:1 in an asymmetrical reflector being optimal or nearly optimal for the domestic load pattern used in the study; (6) Using a load matched reflector, the amount of storage required to achieve solar fractions of total thermal energy (space heating, water heating, clothes drying) above 90% in a residence appears to be much lower than previously thought.

  17. Nonlinear ultimate strength analysis of fixed offshore platforms for earthquake environments

    SciTech Connect (OSTI)

    Chang, S.S. [Hudson Engineering Corp., Houston, TX (United States)

    1995-12-01T23:59:59.000Z

    The design of an offshore platform usually requires the use of ASME B31.3 and API (American Petroleum Institute) RP 2A design codes. ASME B31.3 addresses the design of pressure piping systems for offshore facilities while API RP 2A ``Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms`` (WSD or LRFD) addresses the structural design. This paper first identifies the difference between the ASME B31.3 and API RP 2A on the earthquake load requirements. Second, the paper presents a nonlinear static pushover analysis of a typical fixed offshore platform subject to a ductility level earthquake in 394 ft (120 m) of water depth. The analysis uses a three-dimensional structural model consisting of STRUT, BEAM-COLUMN and LINEAR BEAM elements to determine the structural response while properly accounting for structure-pile-soil interaction effort. Finally, the status of current on-going efforts to implement the API RP 2A code (LRFD version) to the ISO code (International Organization for Standardization), particularly on the earthquake resistant design aspect of fixed offshore the platforms, is briefly reported.

  18. BEAM TILTED CORRELATIONS Frank Vignola

    E-Print Network [OSTI]

    Oregon, University of

    from the modules, module temperature, ambient temperature, wind speed, incident solar radiation under standardized operation conditions (25 Celsius and 1000 watts/meter2 incident solar radiation and comprehensive solar radiation data. Specifically, these models were designed to use the National Solar Radiation

  19. The infrared fixed point of Landau gauge Yang-Mills theory

    E-Print Network [OSTI]

    Axel Weber

    2012-11-07T23:59:59.000Z

    Over the last decade, the infrared behavior of Yang-Mills theory in the Landau gauge has been scrutinized with the help of Dyson-Schwinger equations and lattice calculations. In this contribution, we describe a technically simple approach to the deep infrared regime via Callan-Symanzik renormalization group equations in an epsilon expansion. This approach recovers, in an analytical and systematically improvable way, all the solutions previously found as solutions of the Dyson-Schwinger equations and singles out the solution favored by lattice calculations as the infrared-stable fixed point (for space-time dimensions above two).

  20. Intelligent system design with fixed-base simulation validation for general aviation 

    E-Print Network [OSTI]

    Rong, Jie; Ding, Yuanyuan; Valasek, J.; Painter, John H.

    2003-10-05T23:59:59.000Z

    Proceedmgs of the 2003 IEEE International Symposium on Intelligent Control Houston Texas *October 5-8.2003 Intelligent System Design with Fixed-Base S imu 1 at i on Va 1 i d a t i on for G en er a 1 Av i at i on Jie Rong Yuanyuan Ding John... Commander 700, which is a light twin-engine, typical CA aircraft. This simulation model also possesses a three-axis autopilot with gain scheduling 0-7803-7891-1/03/$17.00 0 2003 IEEE 580 Authorized licensed use limited to: Texas A M University...

  1. Modeling and Experimental Studies of Mercury Oxidation and Adsorption in a Fixed-Bed Reactor

    SciTech Connect (OSTI)

    Paula A. Buitrago, Mike Morrill, JoAnn S. Lighty, Geoffrey D.; Silcox,

    2009-06-15T23:59:59.000Z

    This report presents experimental and modeling mercury oxidation and adsorption data. Fixed-bed and single-particle models of mercury adsorption were developed. The experimental data were obtained with two reactors: a 300- W, methane-fired, tubular, quartz-lined reactor for studying homogeneous oxidation reactions and a fixed-bed reactor, also of quartz, for studying heterogeneous reactions. The latter was attached to the exit of the former to provide realistic combustion gases. The fixed-bed reactor contained one gram of coconut-shell carbon and remained at a temperature of 150oC. All methane, air, SO2, and halogen species were introduced through the burner to produce a radical pool representative of real combustion systems. A Tekran 2537A Analyzer coupled with a wet conditioning system provided speciated mercury concentrations. At 150°C and in the absence of HCl or HBr, the mercury uptake was about 20%. The addition of 50 ppm HCl caused complete capture of all elemental and oxidized mercury species. In the absence of halogens, SO2 increased the mercury adsorption efficiency to up to 30 percent. The extent of adsorption decreased with increasing SO2 concentration when halogens were present. Increasing the HCl concentration to 100 ppm lessened the effect of SO2. The fixed-bed model incorporates Langmuir adsorption kinetics and was developed to predict adsorption of elemental mercury and the effect of multiple flue gas components. This model neglects intraparticle diffusional resistances and is only applicable to pulverized carbon sorbents. It roughly describes experimental data from the literature. The current version includes the ability to account for competitive adsorption between mercury, SO2, and NO2. The single particle model simulates in-flight sorbent capture of elemental mercury. This model was developed to include Langmuir and Freundlich isotherms, rate equations, sorbent feed rate, and intraparticle diffusion. The Freundlich isotherm more accurately described in-flight mercury capture. Using these parameters, very little intraparticle diffusion was evident. Consistent with other data, smaller particles resulted in higher mercury uptake due to available surface area. Therefore, it is important to capture the particle size distribution in the model. At typical full-scale sorbent feed rates, the calculations underpredicted adsorption, suggesting that wall effects can account for as much as 50 percent of the removal, making it an important factor in entrained-mercury adsorption models.

  2. Many-body state engineering using measurements and fixed unitary dynamics

    E-Print Network [OSTI]

    Mads Kock Pedersen; Jens Jakob W. H. Sørensen; Malte C. Tichy; Jacob F. Sherson

    2014-11-20T23:59:59.000Z

    We develop a scheme to prepare a desired state or subspace in high-dimensional Hilbert-spaces using repeated applications of a single static projection operator onto the desired target and fixed unitary dynamics. Benchmarks against other control schemes, performed on generic Hamiltonians and on Bose-Hubbard systems, establish the competitiveness of the method. As a concrete application of the control of mesoscopic atomic samples in optical lattices we demonstrate the near deterministic preparation of Schr\\"{o}dinger cat states of all atoms residing on either the odd or the even sites.

  3. Preparation of a primary argon beam for the CERN fixed target physics

    SciTech Connect (OSTI)

    Küchler, D., E-mail: detlef.kuchler@cern.ch; O’Neil, M.; Scrivens, R. [CERN, BE Department, 1211 Geneva 23 (Switzerland)] [CERN, BE Department, 1211 Geneva 23 (Switzerland); Thomae, R. [iThemba LABS, P.O. Box 722, Somerset West 7130 (South Africa)] [iThemba LABS, P.O. Box 722, Somerset West 7130 (South Africa)

    2014-02-15T23:59:59.000Z

    The fixed target experiment NA61 in the North Area of the Super Proton Synchrotron is studying phase transitions in strongly interacting matter. Up to now they used the primary beams available from the CERN accelerator complex (protons and lead ions) or fragmented beams created from the primary lead ion beam. To explore a wider range of energies and densities a request was made to provide primary argon and xenon beams. This paper describes the results of the setting up and 10 week test run of the Ar{sup 11+} beam from the 14.5 GHz ECR ion source and the linear accelerator (Linac3) at CERN.

  4. The Problem of Two Fixed Centers: Bifurcation Diagram for Positive Energies

    E-Print Network [OSTI]

    Marcello Seri

    2014-09-19T23:59:59.000Z

    We give a comprehensive analysis of the Euler-Jacobi problem of motion in the field of two fixed centers with arbitrary relative strength and for positive values of the energy. These systems represent nontrivial examples of integrable dynamics and are analysed from the point of view of the energy-momentum mapping from the phase space to the space of the integration constants. In this setting we describe the structure of the scattering trajectories in phase space and derive an explicit description of the bifurcation diagram, i.e. the set of critical value of the energy-momentum map.

  5. Thermodynamics of a field theory with an infrared fixed point from gauge/gravity duality

    SciTech Connect (OSTI)

    Alanen, J.; Kajantie, K. [Department of Physics, Post Office Box 64, FI-00014 University of Helsinki (Finland); Helsinki Institute of Physics, Post Office Box 64, FI-00014 University of Helsinki (Finland)

    2010-02-15T23:59:59.000Z

    We use gauge/gravity duality to study the thermodynamics of a field theory with asymptotic freedom in the ultraviolet and a fixed point in the infrared. We find a high temperature quark-gluon phase and a low T conformal unparticle phase. The phase transition between the phases is of first order or continuous, depending on the ratio of the radii of asymptotic anti-de Sitter spaces at T=0 and T={infinity}. This is a prediction from a model of gauge/gravity duality, not yet verified on the field theory side.

  6. Development of a fixed abrasive slicing technique (FAST) for reducing the cost of photovoltaic wafers

    SciTech Connect (OSTI)

    Schmid, F. (Crystal Systems, Inc., Salem, MA (United States))

    1991-12-01T23:59:59.000Z

    This report examines a wafer slicing technique developed by Crystal Systems, Inc. that reduces the cost of photovoltaic wafers. This fixed, abrasive slicing technique (FAST) uses a multiwire bladepack and a diamond-plated wirepack; water is the coolant. FAST is in the prototype production stage and reduces expendable material costs while retaining the advantages of a multiwire slurry technique. The cost analysis revealed that costs can be decreased by making more cuts per bladepack and slicing more wafers per linear inch. Researchers studied the degradation of bladepacks and increased wirepack life. 21 refs.

  7. Does Electricity (and Heat) Network Regulation have anything to learn from Fixed Line Telecoms?

    E-Print Network [OSTI]

    Pollitt, Michael G.

     to electricity, between 2003 and 2008 the percentage of households in Christchurch,  New Zealand, heating via heat pumps has increased from 8% to 35%, with the figure projected to 70% by  2015?18 (Orion, 2008, p.6).  4 The UK history of telecoms reform... www.electricitypolicy.org.uk E P R G W O R K IN G P A P E R N O N -T E C H N IC A L S U M M A R Y Does Electricity (and Heat) Network Regulation have anything to learn from Fixed Line Telecoms Regulation? EPRG Working Paper 0914...

  8. On the continuum limit of gauge-fixed compact U(1) lattice gauge theory

    E-Print Network [OSTI]

    Subhasish Basak; Asit K De; Tilak Sinha

    2003-11-26T23:59:59.000Z

    We investigate the continuum limit of a compact formulation of the lattice U(1) gauge theory in 4 dimensions using a nonperturbative gauge-fixed regularization. We find clear evidence of a continuous phase transition in the pure gauge theory for all values of the gauge coupling (with gauge symmetry restored). When probed with quenched staggered fermions with U(1) charge, the theory clearly has a chiral transition for large gauge couplings. We identify the only possible region in the parameter space where a continuum limit with nonperturbative physics may appear.

  9. A little rain doesn't fix it: Farmers and ranchers remain cautious as drought continues

    E-Print Network [OSTI]

    Kalisek, Danielle

    2012-01-01T23:59:59.000Z

    A little rain doesn?t fix it Farmers and ranchers remain cautious as drought continues Summer 2012 tx H2O 11 ] Story by Danielle Kalisek Rains in the Brazos Valley early in 2012 helped this grass green up, but more rains are needed now... to help warm-season grasses. Photo by Danielle Kalisek. This might sound like a broken record, but it still rings true: Last year?s drought was historic the worst one-year drought in Texas? history. #31;ough recent rains in some parts of the state...

  10. Two-stage fixed-bed gasifier with selectable middle gas off-take point

    DOE Patents [OSTI]

    Strickland, Larry D. (Morgantown, WV); Bissett, Larry A. (Morgantown, WV)

    1992-01-01T23:59:59.000Z

    A two-stage fixed bed coal gasifier wherein an annular region is in registry with a gasification zone underlying a devolatilization zone for extracting a side stream of high temperature substantially tar-free gas from the gasifier. A vertically displaceable skirt means is positioned within the gasifier to define the lower portion of the annular region so that vertical displacement of the skirt means positions the inlet into the annular region in a selected location within or in close proximity to the gasification zone for providing a positive control over the composition of the side stream gas.

  11. Quick Fix Gives Mars Rover's ChemCam Sharper Vision | Department of

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you wantJoin us for| Department ofRights ProtectingEnergy Quick Fix

  12. Property:OpenEI/UtilityRate/FixedDemandChargeMonth8 | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkinsInformationInformation FixedDemandChargeMonth8 Jump to: navigation, search

  13. Property:OpenEI/UtilityRate/FixedDemandChargeMonth9 | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkinsInformationInformation FixedDemandChargeMonth8 Jump to: navigation,

  14. Property:OpenEI/UtilityRate/FixedMonthlyCharge | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkinsInformationInformation FixedDemandChargeMonth8 Jump to:

  15. Comments on "State observation of a fixed-bed reactor based on reduced bilinear H. RAFARALAHY, M. ZASADZINSKI, M. BOUTAYEB and M. DAROUACH

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - 1 - Comments on "State observation of a fixed-bed reactor based on reduced bilinear models" H profiles of a fixed-bed reactor approximated as bilinear system through orthogonal collocation

  16. From Emergency to Fix: Point-of-Use Water Filtration Technology in Colonias Along the United States-Mexico Border

    E-Print Network [OSTI]

    Vandewalle, Emily Lauren

    2014-04-30T23:59:59.000Z

    Small-scale decentralized facilities and technologies are rapidly becoming a dominant technological fix to deliver water to underserved populations in developing nations. This project examines the case of a university partnership with government...

  17. On covering planar graphs with a fixed number of balls Victor Chepoi, Bertrand Estellon, Yann Vax`es

    E-Print Network [OSTI]

    Chepoi, Victor

    On covering planar graphs with a fixed number of balls Victor Chepoi, Bertrand Estellon, Yann Vax`es´editerran´ee, F-13288 Marseille Cedex 9, France, {chepoi,estellon,vaxes}@lif.univ-mrs.fr Abstract. In this note

  18. Discovering the relevant variables in a large clinical database by back-fitting fixed effects in a mixed linear model

    E-Print Network [OSTI]

    Boyer, Edmond

    Discovering the relevant variables in a large clinical database by back-fitting fixed effects are investigates according to a planned protocol and with a predetermined cohort. They also differ from basic

  19. Understanding the Triaging and Fixing Processes of Long Lived Bugs Ripon K. Saha, Sarfraz Khurshid, Dewayne E. Perry

    E-Print Network [OSTI]

    Perry, Dewayne E.

    Understanding the Triaging and Fixing Processes of Long Lived Bugs Ripon K. Saha, Sarfraz Khurshid- velopers/managers triage bugs carefully and schedule Email addresses: ripon@utexas.edu (Ripon K. Saha

  20. Dynamics of a three-phase upflow fixed bed catalytic reactor C. Julcour, F. Stber, J. M. Le Lann, A. M. Wilhelm, H. Delmas*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Dynamics of a three-phase upflow fixed bed catalytic reactor C. Julcour, F. Stüber, J. M. Le Lann, 31078 Toulouse Cedex, France * Corresponding author Abstract A dynamic model of an upflow fixed bed experimentally observed at very high hydrogen flow rates. Keywords: fixed bed reactor; cocurrent upflow; dynamic

  1. Colloids and Surfaces A: Physicochem. Eng. Aspects 281 (2006) 194201 Multi-metal biosorption in a fixed-bed flow-through column

    E-Print Network [OSTI]

    Volesky, Bohumil

    2006-01-01T23:59:59.000Z

    in a fixed-bed flow-through column Ghinwa Naja, Bohumil Volesky Department of Chemical Engineering, Mc biosorption dynamics in a fixed-bed flow- through sorption column was eventually predicted by numerically requires an interdisciplinary approach. However, most of the models for flow-through fixed-bed columns

  2. Page 1 of 1 This policy establishes an institutional procedure for residual revenue earned on restricted fixed-price or fee-for-

    E-Print Network [OSTI]

    Hutcheon, James M.

    /suspension. All costs for a fixed-price project must be expensed directly to the project account. With reasonable and disapprove any future fixed-price projects the investigator proposes. Additionally, if a VPRED-granted F&A waiver is in place for a fixed-price agreement, full F&A will be applied to the project before any

  3. Infrared behavior and fixed-point structure in the compactified Ginzburg--Landau model

    E-Print Network [OSTI]

    C. A. Linhares; A. P. C. Malbouisson; M. L. Souza

    2011-02-07T23:59:59.000Z

    We consider the Euclidean $N$-component Ginzburg--Landau model in $D$ dimensions, of which $d$ ($d\\leq D$) of them are compactified. As usual, temperature is introduced through the mass term in the Hamiltonian. This model can be interpreted as describing a system in a region of the $D$-dimensional space, limited by $d$ pairs of parallel planes, orthogonal to the coordinates axis $x_1,\\,x_2,\\,...,\\,x_d$. The planes in each pair are separated by distances $L_1,\\;L_2,\\; ...,\\,L_d$. For $D=3$, from a physical point of view, the system can be supposed to describe, in the cases of $d=1$, $d=2$, and $d=3$, respectively, a superconducting material in the form of a film, of an infinitely long wire having a retangular cross-section and of a brick-shaped grain. We investigate in the large-$N$ limit the fixed-point structure of the model, in the absence or presence of an external magnetic field. An infrared-stable fixed point is found, whether of not an external magnetic field is applied, but for different ranges of values of the space dimension $ D$.

  4. Modeling water uptake by a root system growing in a fixed soil volume

    E-Print Network [OSTI]

    Albrieu, J L Blengino; Tarzia, D A

    2015-01-01T23:59:59.000Z

    The water uptake by roots of plants is examined for an ideal situation, with an approximation that resembles plants growing in pots, meaning that the total soil volume is fixed. We propose a coupled water uptake-root growth model. A one-dimensional model for water flux and water uptake by a root system growing uniformly distributed in the soil is presented, and the Van Genuchten model for the transport of water in soil is used. The governing equations are represented by a moving boundary model for which the root length, as a function of time, is prescribed. The solution of the model is obtained by front-fixing and finite element methods. Model predictions for water uptake by a same plant growing in loam, silt and clay soils are obtained and compared. A sensitivity analysis to determine relative effects on water uptake when system parameters are changed is also presented and shows that the model and numerical method proposed are more sensitive to the root growth rate than to the rest of the parameters. This se...

  5. The iPEPS algorithm, improved: fast full update and gauge fixing

    E-Print Network [OSTI]

    Ho N. Phien; Johann A. Bengua; Hoang D. Tuan; Philippe Corboz; Roman Orus

    2015-03-18T23:59:59.000Z

    The infinite Projected Entangled Pair States (iPEPS) algorithm [J. Jordan et al, PRL 101, 250602 (2008)] has become a useful tool in the calculation of ground state properties of 2d quantum lattice systems in the thermodynamic limit. Despite its many successful implementations, the method has some limitations in its present formulation which hinder its application to some highly-entangled systems. The purpose of this paper is to unravel some of these issues, in turn enhancing the stability and efficiency of iPEPS methods. For this, we first introduce the fast full update scheme, where effective environment and iPEPS tensors are both simultaneously updated (or evolved) throughout time. As we shall show, this implies two crucial advantages: (i) dramatic computational savings with essentially no loss of accuracy, and (ii) improved overall stability. Besides, we extend the application of the local gauge fixing, successfully implemented for finite-size PEPS [M. Lubasch, J. Ignacio Cirac, M.-C. Ba\\~nuls, PRB 90, 064425 (2014)], to the iPEPS algorithm. We see that the gauge fixing not only further improves the stability of the method, but also accelerates the convergence of the alternating least squares sweeping in the (either "full" or "fast full") tensor update scheme. The improvement in terms of computational cost and stability of the resulting "improved" iPEPS algorithm is benchmarked by studying the ground state properties of the quantum Heisenberg and transverse-field Ising models on an infinite square lattice.

  6. Tilt generation in step-graded In{sub x}Ga{sub 1-x}As metamorphic pseudosubstrate on a singular GaAs substrate using a low-temperature grown InGaP interlayer

    SciTech Connect (OSTI)

    Ghanad Tavakoli, Shahram; Hulko, Oksana; Thompson, David A. [Department of Engineering Physics, 1280 Main Street West, Hamilton, Ontario L8S 4 L7 (Canada)

    2008-05-15T23:59:59.000Z

    Metamorphic pseudosubstrates of In{sub 0.42}Ga{sub 0.58}As were grown by molecular beam epitaxy using step-graded In{sub x}Ga{sub 1-x}As buffer layers grown either directly on a (001) GaAs substrate or on a GaAs substrate overgrown with a layer of low-temperature grown In{sub 0.51}Ga{sub 0.49}P (LT-InGaP). The structures were examined using x-ray reciprocal space mapping to determine the characteristics of the pseudosubstrates and buffer layers. For the sample grown on the LT-InGaP layer, the pseudosubstrate exhibited an asymmetric tilt around [110] toward the [110] direction. Weak-beam dark-field electron imaging shows an imbalance of misfit dislocations with opposite sign Burgers vector. An explanation for this tilt is given and it is suggested that it may be responsible for the improved quality of epitaxial layers grown on such pseudosubstrates.

  7. Multiple linear regression: fixed and multinormal data with missing observations among the independent variables

    E-Print Network [OSTI]

    Johnston, Walter Edward

    1965-01-01T23:59:59.000Z

    *) )() yx V = y* ? ie x* yx 2 n 2 2 n 21 Z (yp-y*) -g ?Z (x -x") J/n, yx rl l n x* Q x(f ~ y fyiq) * n& ', n)(j Thus the estimates of p, tT, and p are obtained by solving (B. 4) 2 y y These estimates are (s. s) m y))) +P (x x*) Y yx 2 rl q /2 *2... factors, which are either fixed or follow a multinormal distribution, employed in the n repetitions of the experiment, B = a (p x 1) matrix of unknown partial regression coeffictents to be estimated. The approach to the problem of missing data...

  8. Development of a new radiometer for the thermodynamic measurement of high temperature fixed points

    SciTech Connect (OSTI)

    Dury, M. R.; Goodman, T. M.; Lowe, D. H.; Machin, G.; Woolliams, E. R. [National Physical Laboratory, Teddington (United Kingdom)] [National Physical Laboratory, Teddington (United Kingdom)

    2013-09-11T23:59:59.000Z

    The National Physical Laboratory (NPL) has developed a new radiometer to measure the thermodynamic melting point temperatures of high temperature fixed points with ultra-low uncertainties. In comparison with the NPL's Absolute Radiation Thermometer (ART), the 'THermodynamic Optical Radiometer' (THOR) is more portable and compact, with a much lower size-of-source effect and improved performance in other parameters such as temperature sensitivity. It has been designed for calibration as a whole instrument via the radiance method, removing the need to calibrate the individual subcomponents, as required by ART, and thereby reducing uncertainties. In addition, the calibration approach has been improved through a new integrating sphere that has been designed to have greater uniformity.

  9. Universal self-similar dynamics of relativistic and nonrelativistic field theories near nonthermal fixed points

    E-Print Network [OSTI]

    Orioli, A Pineiro; Berges, J

    2015-01-01T23:59:59.000Z

    We investigate universal behavior of isolated many-body systems far from equilibrium, which is relevant for a wide range of applications from ultracold quantum gases to high-energy particle physics. The universality is based on the existence of nonthermal fixed points, which represent nonequilibrium attractor solutions with self-similar scaling behavior. The corresponding dynamic universality classes turn out to be remarkably large, encompassing both relativistic as well as nonrelativistic quantum and classical systems. For the examples of nonrelativistic (Gross-Pitaevskii) and relativistic scalar field theory with quartic self-interactions, we demonstrate that infrared scaling exponents as well as scaling functions agree. We perform two independent nonperturbative calculations, first by using classical-statistical lattice simulation techniques and second by applying a vertex-resummed kinetic theory. The latter extends kinetic descriptions to the nonperturbative regime of overoccupied modes. Our results open ...

  10. Fixed-bed gasification research using US coals. Volume 2. Gasification of Jetson bituminous coal

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-03-31T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and governmental agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) Group. This report describes the gasification testing of Jetson bituminous coal. This Western Kentucky coal was gasified during an initial 8-day and subsequent 5-day period. Material flows and compositions are reported along with material and energy balances. Operational experience is also described. 4 refs., 24 figs., 17 tabs.

  11. Control systems field equipment forensics : what happened to my PLC and how do I fix it?

    SciTech Connect (OSTI)

    Parks, Raymond C.

    2010-10-01T23:59:59.000Z

    The outline for the presentation is: (1) Advance preparation - (a) Think about attacks before they happen, (b) Configuration Management, (c) Backups, (d) Off-site storage, (e) Design and build for resiliency, (f) Training operators to detect attack; (2) Detection - (a) How do I know I've been attacked, (b) The front-line detection system - operators; (3) Triage - (a) Working through the attack, (b) Law enforcement or business continuity, (c) Deciding what to fix first; (4) Field Equipment Forensics - (a) Engineering Workstation, (b) Projects/Configurations/Programs; and (5) Conclusion and Discussion. Red teaming works for supply chain - Finds the worst attacks across multiple dimensions, Shows where to best expend resources to reduce risk, and Provides positive control of potentially negative activities.

  12. Non-invasive energy meter for fixed and variable flow systems

    DOE Patents [OSTI]

    Menicucci, David F.; Black, Billy D.

    2005-11-01T23:59:59.000Z

    An energy metering method and apparatus for liquid flow systems comprising first and second segments of one or more conduits through which a liquid flows, comprising: attaching a first temperature sensor for connection to an outside of the first conduit segment; attaching a second temperature sensor for connection to an outside of the second conduit segment; via a programmable control unit, receiving data from the sensors and calculating energy data therefrom; and communicating energy data from the meter; whereby the method and apparatus operate without need to temporarily disconnect or alter the first or second conduit segments. The invention operates with both variable and fixed flow systems, and is especially useful for both active and passive solar energy systems.

  13. High Transverse Momentum Direct Photon Production at Fermilab Fixed-Target Energies

    SciTech Connect (OSTI)

    Apanasevich, Leonard

    2005-05-01T23:59:59.000Z

    This thesis describes a study of the production of high transverse momentum direct photons and {pi}{sup 0} mesons by proton beams at 530 and 800 GeV/c and {pi}{sup -} beams at 515 GeV/c incident on beryllium, copper, and liquid hydrogen targets. The data were collected by Fermilab experiment E706 during the 1990 and 1991-92 fixed target runs. The apparatus included a large, finely segmented lead and liquid argon electromagnetic calorimeter and a charged particle spectrometer featuring silicon strip detectors in the target region and proportional wire chambers and drift tubes downstream of a large aperture analysis magnet. The inclusive cross sections are presented as functions of transverse momentum and rapidity. The measurements are compared with next-to-leading order perturbative QCD calculations and to results from previous experiments.

  14. Bremsstrahlung from relativistic heavy ions in a fixed target experiment at the LHC

    E-Print Network [OSTI]

    Mikkelsen, Rune E; Uggerhøj, Ulrik I

    2015-01-01T23:59:59.000Z

    We calculate the emission of bremsstrahlung from lead and argon ions in A Fixed Target ExpeRiment (AFTER) that uses the LHC beams. With nuclear charges of $Ze$ equal $208$ and $18$ respectively, these ions are accelerated to energies of $7$ TeV$\\times Z $. The bremsstrahlung peaks around $\\approx 100$ GeV and the spectrum exposes the nuclear structure of the incoming ion. The peak structure is significantly different from the flat power spectrum pertaining to a point charge. Photons are predominantly emitted within an angle of $1/\\gamma$ to the direction of ion propagation. Our calculations are based on the Weizs\\"{a}cker-Williams method of virtual quanta with application of existing experimental data on photonuclear interactions.

  15. Bremsstrahlung from relativistic heavy ions in a fixed target experiment at the LHC

    E-Print Network [OSTI]

    Rune E. Mikkelsen; Allan H. Sørensen; Ulrik I. Uggerhøj

    2015-03-23T23:59:59.000Z

    We calculate the emission of bremsstrahlung from lead and argon ions in A Fixed Target ExpeRiment (AFTER) that uses the LHC beams. With nuclear charges of $Ze$ equal $208$ and $18$ respectively, these ions are accelerated to energies of $7$ TeV$\\times Z $. The bremsstrahlung peaks around $\\approx 100$ GeV and the spectrum exposes the nuclear structure of the incoming ion. The peak structure is significantly different from the flat power spectrum pertaining to a point charge. Photons are predominantly emitted within an angle of $1/\\gamma$ to the direction of ion propagation. Our calculations are based on the Weizs\\"{a}cker-Williams method of virtual quanta with application of existing experimental data on photonuclear interactions.

  16. Fixed-Speed and Variable-Slip Wind Turbines Providing Spinning Reserves to the Grid: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Singh, M.; Gevorgian, V.

    2012-11-01T23:59:59.000Z

    As the level of wind penetration increases, wind turbine technology must move from merely generating power from wind to taking a role in supporting the bulk power system. Wind turbines should have the capability to provide inertial response and primary frequency (governor) response so they can support the frequency stability of the grid. To provide governor response, wind turbines should be able to generate less power than the available wind power and hold the rest in reserve, ready to be accessed as needed. This paper explores several ways to control wind turbine output to enable reserve-holding capability. This paper focuses on fixed-speed (also known as Type 1) and variable-slip (also known as Type 2) turbines.

  17. More on the continuum limit of gauge-fixed compact U(1) lattice gauge theory

    E-Print Network [OSTI]

    Asit K. De; Tilak Sinha

    2005-06-30T23:59:59.000Z

    We have verified various proposals that were suggested in our last paper concerning the continuum limit of a compact formulation of the lattice U(1) pure gauge theory in 4 dimensions using a nonperturbative gauge-fixed regularization. Our study reveals that most of the speculations are largely correct. We find clear evidence of a continuous phase transition in the pure gauge theory at "arbitrarily" large couplings. When probed with quenched staggered fermions with U(1) charge, the theory clearly has a chiral transition for large gauge couplings whose intersection with the phase transition in the pure gauge theory continues to be a promising area for nonperturbative physics. We probe the nature of the continuous phase transition by looking at gauge field propagators in the momentum space and locate the region on the critical manifold where free photons can be recovered.

  18. Improved nonsinglet QCD analysis of the fixed-target DIS data

    E-Print Network [OSTI]

    A. V. Kotikov; V. G. Krivokhizhin; B. G. Shaikhatdenov

    2014-11-05T23:59:59.000Z

    Deep inelastic scattering data on $F_2$ structure function obtained by BCDMS, SLAC and NMC collaborations in fixed-target experiments were analyzed in the non-singlet approximation with next-to-next-to-leading-order accuracy. The strong coupling constant is found to be $\\alpha_s(M_Z^2) = 0.1157 \\pm 0.0022 {(total exp.error)} + \\biggl\\{\\begin{array}{l} +0.0028 \\\\ -0.0016 \\end{array} {(theor)}$, which is seen to be well compatible with the average world value. Results obtained in the present paper confirm those derived in \\cite{KKPS} by carrying out similar fits but with systematic errors in BCDMS data taken into account in a different way.

  19. Design of an advanced TLD-based fixed nuclear accident dosimeter

    SciTech Connect (OSTI)

    Casson, W.H.; Mei, G.T.

    1993-08-01T23:59:59.000Z

    A new system has been designed for use as a fixed nuclear accident dosimeter based upon the thermoluminescent dosimeter (TLD) system used for personnel dosimetry at US Department of Energy facilities managed by Martin Marietta Energy Systems, Inc. The system is made up of a small phantom consisting of two main parts measuring 20 x 20 x 5 cm and made from polymethylmethacrylate. A neutron-sensitive TLD card is placed in the center between the two pieces. Also, TLD cards in standard holders are mounted on the front and back of the phantom. A derivation is made of a linear combination of the responses from the TLD elements which results in calculation of the neutron fluence, absorbed dose, and dose equivalent. By using the right linear combinations, a crude spectrum can be estimated, which allows further calculation of the average fluence-to-dose-equivalent conversion factor. The response of the system was tested and found to be applicable for the evaluation of typical nuclear accident spectra, although considerable improvement can be made by the addition of a sulfur pellet. The system was also tested for angular dependence. In order to move the development of this system from the proof-of-principle to full application, the calculation of the TLD resonse curves must be improved, additional measurements must be made, and the system must be tested in a simulated accident neutron field. The advantages of the new fixed dosimeter system are its simplicity, easy maintenance, and lower operational cost. The system uses standard TLD cards that are already in place throughout Energy Systems facilities. The TLD process personnel are famliiar with evaluating doses from TLDs and can provide information necessary to ensure timely and accurate assessment of exposures that may result from riticality accidents. Most of the quality control requirements are part of the existing personnel dosimetry system.

  20. Turing-equivalent automata using a fixed-size quantum memory

    E-Print Network [OSTI]

    Abuzer Yakaryilmaz

    2012-05-24T23:59:59.000Z

    In this paper, we introduce a new public quantum interactive proof system and the first quantum alternating Turing machine: qAM proof system and qATM, respectively. Both are obtained from their classical counterparts (Arthur-Merlin proof system and alternating Turing machine, respectively,) by augmenting them with a fixed-size quantum register. We focus on space-bounded computation, and obtain the following surprising results: Both of them with constant-space are Turing-equivalent. More specifically, we show that for any Turing-recognizable language, there exists a constant-space weak-qAM system, (the nonmembers do not need to be rejected with high probability), and we show that any Turing-recognizable language can be recognized by a constant-space qATM even with one-way input head. For strong proof systems, where the nonmembers must be rejected with high probability, we show that the known space-bounded classical private protocols can also be simulated by our public qAM system with the same space bound. Besides, we introduce a strong version of qATM: The qATM that must halt in every computation path. Then, we show that strong qATMs (similar to private ATMs) can simulate deterministic space with exponentially less space. This leads to shifting the deterministic space hierarchy exactly by one-level. The method behind the main results is a new public protocol cleverly using its fixed-size quantum register. Interestingly, the quantum part of this public protocol cannot be simulated by any space-bounded classical protocol in some cases.

  1. Fixed-bed gasification research using US coals. Volume 1. Program and facility description

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Poole, A.R.; Pui, D.; Liu, B.; Kittleson, D.

    1984-10-01T23:59:59.000Z

    The United States Department of Interior, Bureau of Mines, Twin Cities Research Center, Minneapolis, Minnesota is the site of a 6.5 foot diameter Wellman-Galusha gasifier, installed in 1977-1978. This gasifier, combustor/incinerator, and flue gas scrubber system in the past had been operated jointly by Bureau of Mines personnel, personnel from member companies of the Mining and Industrial Fuel Gas Group, and United States Department of Energy personnel-consultants. Numerous tests using a variety of coals have to date been performed. In May of 1982, Black, Sivalls and Bryson, Incorporated (BS and B) was awarded the contract to plan, execute, and report gasification test performance data from this small industrial fixed-bed gasification test facility. BS and B is responsible for program administration, test planning, test execution, and all documentation of program activities and test reports. The University of Minnesota, Particle Technology Laboratory (UMPTL) is subcontractor to BS and B to monitor process parameters, and provide analysis for material inputs and outputs. This report is the initial volume in a series of reports describing the fixed-bed gasification of US coals at the Bureau of Mines, Twin Cities Research Center. A history of the program is given in Section 1 and a thorough description of the facility in Section 2. The operation of the facility is described in Section 3. Monitoring systems and procedures are described in Sections 4 and 5. Data reduction tools are outlined in Section 6. There is no executive summary or conclusions as this volume serves only to describe the research program. Subsequent volumes will detail each gasification test and other pertinent results of the gasification program. 32 references, 23 figures, 15 tables.

  2. Effects of rigid or adaptive confinement on colloidal self-assembly. Fixed vs. fluctuating number of confined particles

    E-Print Network [OSTI]

    J. P?kalski; N. G. Almarza; A. Ciach

    2015-04-15T23:59:59.000Z

    The effects of confinement on colloidal self-assembly in the case of fixed number of confined particles are studied in the one dimensional lattice model solved exactly in the Grand Canonical Ensemble (GCE) in [J. P\\k{e}kalski et al. J. Chem. Phys. 142, 014903 (2015)]. The model considers a pair interaction defined by a short-range attraction plus a longer-range repulsion. We consider thermodynamic states corresponding to self-assembly into clusters. Both, fixed and adaptive boundaries are studied. For fixed boundaries, there are particular states in which, for equal average densities, the number of clusters in the GCE is larger than in the Canonical Ensemble. The dependence of pressure on density has a different form when the system size changes with fixed number of particles and when the number of particles changes with fixed size of the system. In the former case the pressure has a nonmonotonic dependence on the system size. The anomalous increase of pressure for expanding system is accompanied by formation of a larger number of smaller clusters. In the case of elastic confining surfaces we observe a bistability, i.e. two significantly different system sizes occur with almost the same probability. The mechanism of the bistability in the closed system is different to that of the case of permeable walls, where the two equilibrium system sizes correspond to a different number of particles.

  3. Assessment of tungsten/rhenium thermocouples with metal-carbon eutectic fixed points up to 1500°C

    SciTech Connect (OSTI)

    Gotoh, M. [National Research Council of Canada 1200 Montreal Road, Ottawa ON. Canada K1A 0R6 (Canada)] [National Research Council of Canada 1200 Montreal Road, Ottawa ON. Canada K1A 0R6 (Canada)

    2013-09-11T23:59:59.000Z

    Four Type A thermocouples and two Type C thermocouples were calibrated at the Au fixed point and Co-C and Pd-C eutectic fixed points. The thermocouples were exposed to 1330 °C for a total of 100 hours. The maximum drift due to the exposure was found to be 4.8 °C. The fixed-point calibration EMF of these thermocouples deviated by less than 0.86% from the temperature specified by the standards ASTM E230-2003 for Type C and GOSTR 8.585-2001 for Type A. The length of one of Type A thermocouples A52 is longer than the others by 150mm. Making use of this provision it was possible to place annealed part of A52 to the temperature gradient part of calibration arrangement every time. Therefore observed aging effect was as low as 0.5 °C compared to the other thermocouples.

  4. Upper bounds on the relative energy difference of pure and mixed Gaussian states with a fixed fidelity

    E-Print Network [OSTI]

    V. V. Dodonov

    2011-12-10T23:59:59.000Z

    Exact and approximate formulas for the upper bound of the relative energy difference of two Gaussian states with the fixed fidelity between them are derived. The reciprocal formulas for the upper bound of the fidelity for the fixed value of the relative energy difference are obtained as well. The bounds appear higher for pure states than for mixed ones, and their maximal values correspond to squeezed vacuum states. In particular, to guarantee the relative energy difference less than 10%, for quite arbitrary Gaussian states, the fidelity between them must exceed the level 0.998866.

  5. Fixed bed testing of durable, steam resistant zinc oxide containing sorbents

    SciTech Connect (OSTI)

    Siriwardane, R.V.; Grimm, U.; Poston, J. [USDOE Morgantown Energy Technology Center, WV (United States); Monaco, S.J. [EG& G dTechnical Services of West Virginia, Inc., Morgantown, WV (United States)

    1994-12-31T23:59:59.000Z

    The US Department of Energy is currently developing Integrated Gasification combined Cycle (IGCC) systems for electrical power generation. It has been predicted that IGCC plants with hot gas cleanup will be superior to conventional pulverized coal-fired power plants in overall plant efficiency and environmental performance. Development of a suitable regenerable sorbent is a major barrier issue in the hot gas cleanup program for IGCC systems. This has been a challenging problem during the last 20 years, since many of the sorbents developed in the program could not retain their reactivity and physical integrity during repeated cycles of sulfidation and regeneration reactions. Two promising sorbents and (METC6), which were capable of sustaining their reactivity and physical integrity during repeated sulfidation/regeneration cycles, have been developed at the Morgantown Energy Technology Center (METC) during the past year. These sorbents were tested (sulfided) both in low-pressure (260 kPa/37.7 psia) and high-pressure (1034 kPa/150 psia) fixed-bed reactors at 538{degrees}C (1000{degrees}F) with simulated KRW coal gas. High-pressure testing was continued for 20 cycles with steam regeneration. There were no appreciable changes in sulfidation capacity of the sorbents during the 20-cycle testing. The crush strength of the sorbent actually improved after 20 cycles and there were no indications of spalling or any other physical deterioration of the sorbents. In testing to date, these sorbents exhibit better overall sulfur capture performance than the conventional sorbents.

  6. The iPEPS algorithm, improved: fast full update and gauge fixing

    E-Print Network [OSTI]

    Phien, Ho N; Tuan, Hoang D; Corboz, Philippe; Orus, Roman

    2015-01-01T23:59:59.000Z

    The infinite Projected Entangled Pair States (iPEPS) algorithm [J. Jordan et al, PRL 101, 250602 (2008)] has become a useful tool in the calculation of ground state properties of 2d quantum lattice systems in the thermodynamic limit. Despite its many successful implementations, the method has some limitations in its present formulation which hinder its application to some highly-entangled systems. The purpose of this paper is to unravel some of these issues, in turn enhancing the stability and efficiency of iPEPS methods. For this, we first introduce the fast full update scheme, where effective environment and iPEPS tensors are both simultaneously updated (or evolved) throughout time. As we shall show, this implies two crucial advantages: (i) dramatic computational savings with essentially no loss of accuracy, and (ii) improved overall stability. Besides, we extend the application of the local gauge fixing, successfully implemented for finite-size PEPS [M. Lubasch, J. Ignacio Cirac, M.-C. Ba\\~nuls, PRB 90, 06...

  7. (Catalytic mechanism of hydrogenase from aerobic N sub 2 -fixing microorganisms)

    SciTech Connect (OSTI)

    Arp, D.J.

    1990-01-01T23:59:59.000Z

    Hydrogenases are enzymes which catalyze reactions involving dihydrogen. They serve integral roles in a number of microbial metabolic pathways. Our research is focussed on investigations of the catalytic mechanism of the hydrogenases found in aerobic, N{sub 2}-fixing microorganisms such as Azotobacter vinelandii and the agronomically important Bradyrhizobium japonicum as well as microorganisms with similar hydrogenases. The hydrogenases isolated from these microorganisms are Ni- and Fe-containing heterodimers. Our work has focussed on three areas during the last grant period. In all cases, a central theme has been the role of inhibitors in the characteristics under investigation. In addition, a number of collaborative efforts have yielded interesting results. In metalloenzymes such as hydrogenase, inhibitors often influence the activity of the enzyme through ligand interactions with redox centers, often metals, within the enzyme. Therefore, investigations of the ability of various compounds to inhibit an enzyme's activity, as well as the mechanism of inhibition, can provide insight into the catalytic mechanism of the enzyme as well as the role of various redox centers in catalysis. We have investigated in detail four inhibitors of A. vinelandii and the results are summarized here. The influence of these inhibitors on the spectral properties of the enzyme are summarized. Electron paramagnetic resonance and ultraviolet spectra investigations are discussed. 9 figs.

  8. Turing-equivalent automata using a fixed-size quantum memory

    E-Print Network [OSTI]

    Yakaryilmaz, Abuzer

    2012-01-01T23:59:59.000Z

    In this paper, we introduce a new public quantum interactive proof system and the first quantum alternating Turing machine: qAM proof system and qATM, respectively. Both are obtained from their classical counterparts (Arthur-Merlin proof system and alternating Turing machine, respectively,) by augmenting them with a fixed-size quantum register. We focus on space-bounded computation, and obtain the following surprising results: Both of them with constant-space are Turing-equivalent. More specifically, we show that for any Turing-recognizable language, there exists a constant-space weak-qAM system, (the nonmembers do not need to be rejected with high probability), and we show that any Turing-recognizable language can be recognized by a constant-space qATM even with one-way input head. For strong proof systems, where the nonmembers must be rejected with high probability, we show that the known space-bounded classical private protocols can also be simulated by our public qAM system with the same space bound. Besi...

  9. Realization of the WC-C peritectic fixed point at NIM and NMIJ

    SciTech Connect (OSTI)

    Wang, T.; Bai, C.; Yuan, Z.; Dong, W.; Lu, X. [National Institute of Metrology (NIM), Beijing (China)] [National Institute of Metrology (NIM), Beijing (China); Sasajima, N.; Yamada, Y.; Ara, C. [National Metrology Institute of Japan, AIST (NMIJ, AIST), Tsukuba (Japan)] [National Metrology Institute of Japan, AIST (NMIJ, AIST), Tsukuba (Japan)

    2013-09-11T23:59:59.000Z

    Three WC-C peritectic fixed point cells, constructed from different sources of tungsten with different nominal purities, were measured at NIM and NMIJ. The three cells were constructed at NMIJ by NIM and NMIJ staffs, and T{sub 90} values of the three cells were measured at NMIJ during the period 31 Aug. to 25 Dec. 2009. Thereafter, the three cells were then transported to NIM, and T{sub 90} values of these cells were measured from 7 Dec. 2011 to 9 Jan. 2012. The results showed that T{sub 90} values of the three cells measured at the two institutes agreed within 0.4 °C with the combined scale comparison uncertainty of 1.7 °C (k= 2). The main component of the uncertainty is not the uncertainty due to impurities of the cells but the scale uncertainty and the stability of the measurement system. From these results it can be concluded that the WC-C cell is stable enough to provide new means of international high-temperature scale comparison above 3000 K.

  10. Measuring Stellar Radial Velocities with a Dispersed Fixed-Delay Interferometer

    E-Print Network [OSTI]

    Mahadevan, Suvrath; Ge, Jian; DeWitt, Curtis; Fleming, Scott W; Cohen, Roger; Crepp, Justin; Heuvel, Andrew Vanden

    2008-01-01T23:59:59.000Z

    We demonstrate the ability to measure precise stellar barycentric radial velocities with the dispersed fixed-delay interferometer technique using the Exoplanet Tracker (ET), an instrument primarily designed for precision differential Doppler velocity measurements using this technique. Our barycentric radial velocities, derived from observations taken at the KPNO 2.1 meter telescope, differ from those of Nidever et al. by 0.047 km/s (rms) when simultaneous iodine calibration is used, and by 0.120 km/s (rms) without simultaneous iodine calibration. Our results effectively show that a Michelson interferometer coupled to a spectrograph allows precise measurements of barycentric radial velocities even at a modest spectral resolution of R ~ 5100. A multi-object version of the ET instrument capable of observing ~500 stars per night is being used at the Sloan 2.5 m telescope at Apache Point Observatory for the Multi-object APO Radial Velocity Exoplanet Large-area Survey (MARVELS), a wide-field radial velocity survey ...

  11. Measuring Stellar Radial Velocities with a Dispersed Fixed-Delay Interferometer

    E-Print Network [OSTI]

    Suvrath Mahadevan; Julian van Eyken; Jian Ge; Curtis DeWitt; Scott W. Fleming; Roger Cohen; Justin Crepp; Andrew Vanden Heuvel

    2008-01-25T23:59:59.000Z

    We demonstrate the ability to measure precise stellar barycentric radial velocities with the dispersed fixed-delay interferometer technique using the Exoplanet Tracker (ET), an instrument primarily designed for precision differential Doppler velocity measurements using this technique. Our barycentric radial velocities, derived from observations taken at the KPNO 2.1 meter telescope, differ from those of Nidever et al. by 0.047 km/s (rms) when simultaneous iodine calibration is used, and by 0.120 km/s (rms) without simultaneous iodine calibration. Our results effectively show that a Michelson interferometer coupled to a spectrograph allows precise measurements of barycentric radial velocities even at a modest spectral resolution of R ~ 5100. A multi-object version of the ET instrument capable of observing ~500 stars per night is being used at the Sloan 2.5 m telescope at Apache Point Observatory for the Multi-object APO Radial Velocity Exoplanet Large-area Survey (MARVELS), a wide-field radial velocity survey for extrasolar planets around TYCHO-2 stars in the magnitude range 7.6velocities, this survey will also yield precise barycentric radial velocities for many thousands of stars using the data analysis techniques reported here. Such a large kinematic survey at high velocity precision will be useful in identifying the signature of accretion events in the Milky Way and understanding local stellar kinematics in addition to discovering exoplanets, brown dwarfs and spectroscopic binaries.

  12. Nested, fixed-depth fluidic sampler supplementary testing - AEAT doc 2926-2-002

    SciTech Connect (OSTI)

    REICH, F.R.

    1999-03-11T23:59:59.000Z

    This report summarizes the results of cold testing, completed by AEAT, as part of the proof-of-principle testing for a proposed nested, fixed-depth fluidic sampling system. This sampling system will provide waste samples from the PHMC feed tank to support the privatization contract with BNFL. Proof-of-principle tests were completed with 2 wt% and 10 wt% sand/water and 25 wt% kaolin clay/water simulants with a test setup that spanned the 24 ft to 57 ft height required in the feed tank. The tests demonstrated that the system could pump and sample waste materials with low and with high solids content. In addition, the tests demonstrated a need for some design upgrades to the sampling system, as there was material loss when the sample bottle was removed from the sampling needle. These were complementary tests, completed as part of an EM-50 Tank Focus Area (TFA) to develop a sampling system for validating LAW and HLW waste batches for the Privatization Contract.

  13. Theoretical framework to analyze searches for hidden light gauge bosons in electron scattering fixed target experiments

    E-Print Network [OSTI]

    T. Beranek; H. Merkel; M. Vanderhaeghen

    2013-03-11T23:59:59.000Z

    Motivated by anomalies in cosmic ray observations and by attempts to solve questions of the Standad Model of particle physics like the (g-2)_mu discrepancy, U(1) extensions of the Standard Model have been proposed in recent years. Such U(1) extensions allow for the interaction of Dark Matter by exchange of a photon-like massive force carrier \\gamma' not included in the Standard Model. In order to search for \\gamma' bosons various experimental programs have been started. One approach is the dedicated search at fixed-target experiments at modest energies as performed at MAMI or at the Jefferson Lab. In these experiments the process e(A,Z)->e(A,Z)l^+l^- is investigated and a search for a very narrow resonance in the invariant mass distribution of the l^+l^- pair is performed. In this work we analyze this process in terms of signal and background in order to describe existing data obtained by the A1 experiment at MAMI with the aim to give accurate predictions for exclusion limits in the \\gamma' parameter space. We present a detailed theoretical analysis of the cross sections entering in the description of such processes.

  14. If it's Broken, Don't Fix it: The Government of the Euro area in the EU "Reform Treaty"

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    If it's Broken, Don't Fix it: The Government of the Euro area in the EU "Reform Treaty" N° 2007: The Government of the Euro area in the EU "Reform Treaty" Éloi Laurent OFCE (Sciences-po Center for Economic failure. This paper examines the reforms of the "economic governance" of the euro area proposed

  15. Fixed bed gasification studies on coal-feedlot biomass and coal-chicken litter biomass under batch mode operation 

    E-Print Network [OSTI]

    Priyadarsan, Soyuz

    2002-01-01T23:59:59.000Z

    of the processes for energy conversion of biomass fuels is thermochemical gasification. For the current study, a laboratory scale, 10 kW[th], fixed-bed gasifier (reactor internal diameter 0.15 m, reactor height 0.30 m) facility was built at the Texas A...

  16. Fixed bed gasification studies on coal-feedlot biomass and coal-chicken litter biomass under batch mode operation

    E-Print Network [OSTI]

    Priyadarsan, Soyuz

    2002-01-01T23:59:59.000Z

    of the processes for energy conversion of biomass fuels is thermochemical gasification. For the current study, a laboratory scale, 10 kW[th], fixed-bed gasifier (reactor internal diameter 0.15 m, reactor height 0.30 m) facility was built at the Texas A...

  17. Robust STATCOM Control for the Enhancement of Fault Ride-Through Capability of Fixed Speed Wind Generators

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    -slip relationships as well as through simulations. The wind generator is a highly nonlinear system, which is modelled power generation. This type of wind generator always consumes reactive power from the grid. WhenRobust STATCOM Control for the Enhancement of Fault Ride-Through Capability of Fixed Speed Wind

  18. Gauge fixing and classical dynamical r-matrices in ISO(2,1)-Chern-Simons theory

    E-Print Network [OSTI]

    Catherine Meusburger; Torsten Schönfeld

    2012-05-31T23:59:59.000Z

    We apply Dirac's gauge fixing procedure to Chern-Simons theory with gauge group ISO(2,1) on manifolds RxS, where S is a punctured oriented surface of general genus. For all gauge fixing conditions that satisfy certain structural requirements, this yields an explicit description of the Poisson structure on the moduli space of flat ISO(2,1)-connections on S via the resulting Dirac bracket. The Dirac bracket is determined by classical dynamical r-matrices for ISO(2,1). We show that the Poisson structures and classical dynamical r-matrices arising from different gauge fixing conditions are related by dynamical ISO(2,1)-valued transformations that generalise the usual gauge transformations of classical dynamical r-matrices. By means of these transformations, it is possible to classify all Poisson structures and classical dynamical r-matrices obtained from such gauge fixings. Generically these Poisson structures combine classical dynamical r-matrices for non-conjugate Cartan subalgebras of iso(2,1).

  19. THEORY OF DISPERSED FIXED-DELAY INTERFEROMETRY FOR RADIAL VELOCITY EXOPLANET SEARCHES

    SciTech Connect (OSTI)

    Van Eyken, Julian C.; Ge Jian; Mahadevan, Suvrath, E-mail: vaneyken@ipac.caltech.ed, E-mail: jge@astro.ufl.ed, E-mail: suvrath@astro.psu.ed [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, P.O. Box 112055, Gainesville, FL 32611-2055 (United States)

    2010-07-15T23:59:59.000Z

    The dispersed fixed-delay interferometer (DFDI) represents a new instrument concept for high-precision radial velocity (RV) surveys for extrasolar planets. A combination of a Michelson interferometer and a medium-resolution spectrograph, it has the potential for performing multi-object surveys, where most previous RV techniques have been limited to observing only one target at a time. Because of the large sample of extrasolar planets needed to better understand planetary formation, evolution, and prevalence, this new technique represents a logical next step in instrumentation for RV extrasolar planet searches, and has been proven with the single-object Exoplanet Tracker (ET) at Kitt Peak National Observatory, and the multi-object W. M. Keck/MARVELS Exoplanet Tracker at Apache Point Observatory. The development of the ET instruments has necessitated fleshing out a detailed understanding of the physical principles of the DFDI technique. Here we summarize the fundamental theoretical material needed to understand the technique and provide an overview of the physics underlying the instrument's working. We also derive some useful analytical formulae that can be used to estimate the level of various sources of error generic to the technique, such as photon shot noise when using a fiducial reference spectrum, contamination by secondary spectra (e.g., crowded sources, spectroscopic binaries, or moonlight contamination), residual interferometer comb, and reference cross-talk error. Following this, we show that the use of a traditional gas absorption fiducial reference with a DFDI can incur significant systematic errors that must be taken into account at the precision levels required to detect extrasolar planets.

  20. erwations of ax~s~~~~tr~~ tracer particle orientation ng flow through a dilute fixed bed of fibers

    E-Print Network [OSTI]

    Shaqfeh, Eric

    erwations of ax~s~~~~tr~~ tracer particle orientation ng flow through a dilute fixed bed of fibers.A dilute fixed bed of randomly placedfiberswasconstructedand glycerol/water suspensionsof either synthetic the tracer particle population at the end of the bed.The effectof Brownian motion on the hydrodynamically

  1. Draft Genome sequence of Frankia sp. Strain QA3, a nitrogen-fixing actinobacterium isolated from the root nodule of Alnus nitida

    SciTech Connect (OSTI)

    Sen, Arnab [University of North Bengal, Siliguri, India; Beauchemin, Nicholas [University of New Hampshire; Bruce, David [Los Alamos National Laboratory (LANL); Chain, Patrick S. G. [Lawrence Livermore National Laboratory (LLNL); Chen, Amy [U.S. Department of Energy, Joint Genome Institute; Davenport, Karen W. [Los Alamos National Laboratory (LANL); Deshpande, Shweta [U.S. Department of Energy, Joint Genome Institute; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Furnholm, Teal [University of New Hampshire; Ghodhbane-Gtari, Faten [University of New Hampshire; Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Gtari, Maher [University of New Hampshire; Han, James [U.S. Department of Energy, Joint Genome Institute; Huntemann, Marcel [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Markowitz, Victor [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Nouioui, Imen [University of Tunis-El Manar, Tunisia; Pagani, Ioanna [U.S. Department of Energy, Joint Genome Institute; Pati, Amrita [U.S. Department of Energy, Joint Genome Institute; Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Santos, Catarina [Instiuto Celular e Aplicada, Portugal; Sur, Saubashya [University of North Bengal, Siliguri, India; Szeto, Ernest [U.S. Department of Energy, Joint Genome Institute; Tavares, Fernando [Instiuto Celular e Aplicada, Portugal; Teshima, Hazuki [Los Alamos National Laboratory (LANL); Thakur, Subarna [University of North Bengal, Siliguri, India; Wall, Luis [University of Quilmes, Argentina; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Wishart, Jessie [University of New Hampshire; Tisa, Louis S. [University of New Hampshire

    2013-01-01T23:59:59.000Z

    Members of actinomycete genus Frankia form a nitrogen-fixing symbiosis with 8 different families of actinorhizal plants. We report a high-quality draft genome sequence for Frankia sp. stain QA3, a nitrogen-fixing actinobacterium isolated from root nodules of Alnus nitida.

  2. FUNDAMENTAL PERFORMANCE OF A DISPERSED FIXED DELAY INTERFEROMETER IN SEARCHING FOR PLANETS AROUND M DWARFS

    SciTech Connect (OSTI)

    Wang Ji; Ge Jian; Jiang Peng; Zhao Bo, E-mail: jwang@astro.ufl.edu [Department of Astronomy, 211, Bryant Space Science Center, University of Florida, Gainesville, FL 32611 (United States)

    2011-09-10T23:59:59.000Z

    We present a new method to calculate fundamental Doppler measurement limits with a dispersed fixed delay interferometer (DFDI) in the near-infrared (NIR) wavelength region for searching for exoplanets around M dwarfs in the coming decade. It is based on calculating the Q factor, a measure of flux-normalized Doppler sensitivity in the fringing spectra created with DFDI. We calculate the Q factor as a function of spectral resolution R, stellar-projected rotational velocity Vsin i, stellar effective temperature T{sub eff}, and optical path difference (OPD) of the interferometer. We also compare the DFDI Q factor to that for the popular cross-dispersed echelle spectrograph method (the direct echelle (DE) method). We find that (1) Q{sub DFDI} is a factor of 1.5-3 higher than Q{sub DE} at R ranging from 5000 to 20,000; (2) Q{sub DFDI} and Q{sub DE} converge at a very high R (R {>=} 100,000); (3) Q{sub DFDI} increases as R increases and Vsin i deceases; (4) for a given R, Q{sub DFDI} increases as T{sub eff} drops from 3100 K to 2400 K (M4V to M9V). We also investigate how Q{sub DFDI} is affected by OPD and find that a 5 mm deviation from the optimal OPD does not significantly affect Q{sub DFDI} (10% or less) for a wide range of R. Given that the NIR Doppler measurement is likely to be detector-limited for a while, we introduce new merit functions, which is directly related to photon-limited radial velocity (RV) uncertainty, to evaluate Doppler performance with the DFDI and DE methods. We find that DFDI has strength in wavelength coverage and multi-object capability over the DE for a limited detector resource. We simulate the performance of the InfraRed Exoplanet Tracker (IRET) based on the DFDI design, being considered for the next generation IR Doppler measurements. The predicted photon-limited RV uncertainty suggests that IRET is capable of detecting Earth-like exoplanets in habitable zone around nearby bright M dwarfs if they exist. A new method is developed to quantitatively estimate the influence of telluric lines on RV uncertainty. Our study shows that photon-limited RV uncertainty can be reached if 99% of the strength of telluric lines can be removed from the measured stellar spectra. At low to moderate levels of telluric line strength removal (50%-90%), the optimal RV uncertainty is typically a factor of two to three times larger than photon-limited RV uncertainty.

  3. Local Two-Photon Couplings and the J=0 Fixed Pole in Real and Virtual Compton Scattering

    E-Print Network [OSTI]

    Stanley J. Brodsky; Felipe J. Llanes-Estrada; Adam P. Szczepaniak

    2008-12-02T23:59:59.000Z

    The local coupling of two photons to the fundamental quark currents of a hadron gives an energy-independent contribution to the Compton amplitude proportional to the charge squared of the struck quark, a contribution which has no analog in hadron scattering reactions. We show that this local contribution has a real phase and is universal, giving the same contribution for real or virtual Compton scattering for any photon virtuality and skewness at fixed momentum transfer squared t. The t-dependence of this J=0 fixed Regge pole is parameterized by a yet unmeasured even charge-conjugation form factor of the target nucleon. The t=0 limit gives an important constraint on the dependence of the nucleon mass on the quark mass through the Weisberger relation. We discuss how this 1/x form factor can be extracted from high energy deeply virtual Compton scattering and examine predictions given by models of the H generalized parton distribution.

  4. Fixed-bed gasification research using US coals. Volume 17. Gasification and liquids recovery of four US coals

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-12-01T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and government agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) group. This report is the seventeenth in a series of reports describing the atmospheric pressure, fixed-bed gasification of US coals. This report describes the gasification and pyrolysis liquids recovery test for four different coals: Illinois No. 6, SUFCO, Indianhead lignite, and Hiawatha. This test series spanned from July 15, 1985, through July 28, 1985. 4 refs., 16 figs., 19 tabs.

  5. Spin physics and TMD studies at A Fixed-Target ExpeRiment at the LHC (AFTER@LHC)

    E-Print Network [OSTI]

    J. P. Lansberg; M. Anselmino; R. Arnaldi; S. J. Brodsky; V. Chambert; W. den Dunnen; J. P. Didelez; B. Genolini; E. G. Ferreiro; F. Fleuret; Y. Gao; C. Hadjidakis; I. Hrvinacova; C. Lorce; L. Massacrier; R. Mikkelsen; C. Pisano; A. Rakotozafindrabe; P. Rosier; I. Schienbein; M. Schlegel; E. Scomparin; B. Trzeciak; U. I. Uggerhoj; R. Ulrich; Z. Yang

    2014-10-08T23:59:59.000Z

    We report on the opportunities for spin physics and Transverse-Momentum Dependent distribution (TMD) studies at a future multi-purpose fixed-target experiment using the proton or lead ion LHC beams extracted by a bent crystal. The LHC multi-TeV beams allow for the most energetic fixed-target experiments ever performed, opening new domains of particle and nuclear physics and complementing that of collider physics, in particular that of RHIC and the EIC projects. The luminosity achievable with AFTER@LHC using typical targets would surpass that of RHIC by more that 3 orders of magnitude in a similar energy region. In unpolarised proton-proton collisions, AFTER@LHC allows for measurements of TMDs such as the Boer-Mulders quark distributions, the distribution of unpolarised and linearly polarised gluons in unpolarised protons. Using the polarisation of hydrogen and nuclear targets, one can measure transverse single-spin asymmetries of quark and gluon sensitive probes, such as, respectively, Drell-Yan pair and quarkonium production. The fixed-target mode has the advantage to allow for measurements in the target-rapidity region, namely at large x^uparrow in the polarised nucleon. Overall, this allows for an ambitious spin program which we outline here.

  6. Gauge Fixing in the Maxwell Like Gravitational Theory in Minkowski Spacetime and in the Equivalent Lorentzian Spacetime

    E-Print Network [OSTI]

    Roldao da Rocha; Waldyr A. Rodrigues Jr

    2014-12-12T23:59:59.000Z

    In a previous paper we investigate a Lagrangian field theory for the gravitational field (which is there represented by a section g^a of the orthonormal coframe bundle over Minkowski spacetime. Such theory, under appropriate conditions, has been proved to be equivalent to a Lorentzian spacetime structure, where the metric tensor satisfies Einstein field equations. Here, we first recall that according to quantum field theory ideas gravitation is described by a Lagrangian theory of a possible massive graviton field (generated by matter fields and coupling also to itself) living in Minkowski spacetime. The graviton field is moreover supposed to be represented by a symmetric tensor field h carrying the representations of spin two and zero of the Lorentz group. Such a field, then (as it is well known), must necessarily satisfy the gauge condition given by Eq.(3) below. Next, we introduce an ansatz relating h to the 1-form fields g^a. Then, using the Clifford bundle formalism we derive, from our Lagrangian theory, the exact wave equation for the graviton and investigate the role of the gauge condition given by Eq.(3) in obtaining a reliable conservation law for the energy-momentum tensor of the gravitational plus the matter fields in Minkowski spacetime. Finally we ask the question: does Eq.(3) fix any gauge condition for the field g of the effective Lorentzian spacetime structure that represents the field h in our theory? We show that no gauge condition is fixed a priory, as is the case in General Relativity. Moreover we investigate under which conditions we may fix Logunov gauge condition.

  7. Modeling and Experimental Studies of Mercury Oxidation and Adsorption in a Fixed-Bed and Entrained-Flow Reactor

    SciTech Connect (OSTI)

    Buitrago, Paula A; Morrill, Mike; Lighty, JoAnn S; Silcox, Geoffrey D

    2014-08-20T23:59:59.000Z

    This report presents experimental and modeling mercury oxidation and adsorption data. Fixed-bed and single-particle models of mercury adsorption were developed. The experimental data were obtained with two reactors: a 300-W, methane-fired, tubular, quartz-lined reactor for studying homogeneous oxidation reactions and a fixed-bed reactor, also of quartz, for studying heterogeneous reactions. The latter was attached to the exit of the former to provide realistic combustion gases. The fixed-bed reactor contained one gram of coconut-shell carbon and remained at a temperature of 150oC. All methane, air, SO2, and halogen species were introduced through the burner to produce a radical pool representative of real combustion systems. A Tekran 2537A Analyzer coupled with a wet conditioning system provided speciated mercury concentrations. At 150?C and in the absence of HCl or HBr, the mercury uptake was about 20%. The addition of 50 ppm HCl caused complete capture of all elemental and oxidized mercury species. In the absence of halogens, SO2 increased the mercury adsorption efficiency to up to 30 percent. The extent of adsorption decreased with increasing SO2 concentration when halogens were present. Increasing the HCl concentration to 100 ppm lessened the effect of SO2. The fixed-bed model incorporates Langmuir adsorption kinetics and was developed to predict adsorption of elemental mercury and the effect of multiple flue gas components. This model neglects intraparticle diffusional resistances and is only applicable to pulverized carbon sorbents. It roughly describes experimental data from the literature. The current version includes the ability to account for competitive adsorption between mercury, SO2, and NO2. The single particle model simulates in-flight sorbent capture of elemental mercury. This model was developed to include Langmuir and Freundlich isotherms, rate equations, sorbent feed rate, and intraparticle diffusion. The Freundlich isotherm more accurately described in-flight mercury capture. Using these parameters, very little intraparticle diffusion was evident. Consistent with other data, smaller particles resulted in higher mercury uptake due to available surface area. Therefore, it is important to capture the particle size distribution in the model. At typical full-scale sorbent feed rates, the calculations underpredicted adsorption, suggesting that wall effects can account for as much as 50 percent of the removal, making it an important factor in entrained-mercury adsorption models.

  8. Fixed Monthly Living Expense Payments at the Lawrence Livermore National Laboratory, INS-L-11-05

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2: FinalOffers New Training on Energy6 FederalofE:FinancingFinding0EnergyFixed Monthly

  9. RT in situ PCR detection of MART-1 and TRP-2 mRNA in formalin-fixed, paraffin-embedded tissues of melanoma and nevi.

    E-Print Network [OSTI]

    Itakura, Eijun; Huang, Rong-Rong; Wen, Duan-Ren; Paul, Eberhard; Wünsch, Peter H; Cochran, Alistair J

    2008-01-01T23:59:59.000Z

    Cochran AJ. Detection of tyrosinase mRNA in formalin-fixed,PM, Hearing VJ. A second tyrosinase- related protein, TRP-2,mRNA isoforms of the tyrosinase-related protein-2/DOPAchrome

  10. Distance dependent rates of photoinduced charge separation and dark charge recombination in fixed distance porphyrin-quinone molecules

    SciTech Connect (OSTI)

    Wasielewski, M.R.; Niemczyk, M.P.

    1986-01-01T23:59:59.000Z

    Three zinc tetraphenylporphyrin-anthraquinone derivatives were prepared in which the edge-to-edge distances between the porphyrin and quinone ..pi.. systems are fixed by a rigid hydrocarbon spacer molecule. Triptycene, trans-1,2-diphenylcyclopentane, and adamantane were used to fix the porphyrin-anthraquinone distance at 2.5, 3.7, and 4.9 A, respectively. These molecules possess 1,2, and 3 saturated carbon atoms, respectively, between the porphyrin donor and the quinone acceptor. Rate constants for photoinduced electron transfer from the lowest excited singlet state of the zinc tetraphenylporphyrin donor to the anthraquinone acceptor were measured. In addition, the corresponding radical ion pair recombination rate constants for each of these molecules were also determined. The rate constants for both photoinduced charge separation and subsequent radical ion pair recombination decrease by approximately a factor of 10 for each saturated carbon atom intervening between the porphyrin donor and the quinone acceptor. These results are consistent with a model in which the rate of electron transfer is determined by weak mixing of the sigma orbitals of the saturated hydrocarbon spacer with the ..pi.. orbitals of the donor and acceptor. 22 refs., 5 figs.

  11. Semi-analytic equations to the Cox-Thompson inverse scattering method at fixed energy for special cases

    E-Print Network [OSTI]

    Tamas Palmai; Miklos Horvath; Barnabas Apagyi

    2011-11-25T23:59:59.000Z

    Solution of the Cox-Thompson inverse scattering problem at fixed energy [1,2,3] is reformulated resulting in semi-analytic equations. The new set of equations for the normalization constants and the nonphysical (shifted) angular momenta are free of matrix inversion operations. This simplification is a result of treating only the input phase shifts of partial waves of a given parity. Therefore, the proposed method can be applied for identical particle scattering of the bosonic type (or for certain cases of identical fermionic scattering). The new formulae are expected to be numerically more efficient than the previous ones. Based on the semi-analytic equations an approximate method is proposed for the generic inverse scattering problem, when partial waves of arbitrary parity are considered.

  12. SU-E-J-261: Statistical Analysis and Chaotic Dynamics of Respiratory Signal of Patients in BodyFix

    SciTech Connect (OSTI)

    Michalski, D; Huq, M; Bednarz, G; Lalonde, R; Yang, Y; Heron, D [University of Pittsburgh Medical Center, Pittsburgh, PA (United States)

    2014-06-01T23:59:59.000Z

    Purpose: To quantify respiratory signal of patients in BodyFix undergoing 4DCT scan with and without immobilization cover. Methods: 20 pairs of respiratory tracks recorded with RPM system during 4DCT scan were analyzed. Descriptive statistic was applied to selected parameters of exhale-inhale decomposition. Standardized signals were used with the delay method to build orbits in embedded space. Nonlinear behavior was tested with surrogate data. Sample entropy SE, Lempel-Ziv complexity LZC and the largest Lyapunov exponents LLE were compared. Results: Statistical tests show difference between scans for inspiration time and its variability, which is bigger for scans without cover. The same is for variability of the end of exhalation and inhalation. Other parameters fail to show the difference. For both scans respiratory signals show determinism and nonlinear stationarity. Statistical test on surrogate data reveals their nonlinearity. LLEs show signals chaotic nature and its correlation with breathing period and its embedding delay time. SE, LZC and LLE measure respiratory signal complexity. Nonlinear characteristics do not differ between scans. Conclusion: Contrary to expectation cover applied to patients in BodyFix appears to have limited effect on signal parameters. Analysis based on trajectories of delay vectors shows respiratory system nonlinear character and its sensitive dependence on initial conditions. Reproducibility of respiratory signal can be evaluated with measures of signal complexity and its predictability window. Longer respiratory period is conducive for signal reproducibility as shown by these gauges. Statistical independence of the exhale and inhale times is also supported by the magnitude of LLE. The nonlinear parameters seem more appropriate to gauge respiratory signal complexity since its deterministic chaotic nature. It contrasts with measures based on harmonic analysis that are blind for nonlinear features. Dynamics of breathing, so crucial for 4D-based clinical technologies, can be better controlled if nonlinear-based methodology, which reflects respiration characteristic, is applied. Funding provided by Varian Medical Systems via Investigator Initiated Research Project.

  13. The Fix Issue 9

    E-Print Network [OSTI]

    Multiple Contributors

    1990-01-01T23:59:59.000Z

    or erotic , c enes in tilndom. Rosem .. ry is not .. cutter 01 porn or ot - 'ex acene,?, but rilther s omeone .. ho kno .. s ho w t o exp lo re the .sen .se" il nd tilke, the re .. de e .. 10n9. Greilt e ll'lOtionill and 3en3u .. l po .. er . And she...

  14. Face Fixing Cameras

    E-Print Network [OSTI]

    Boyd, David

    2011-06-22T23:59:59.000Z

    Broadcast Transcript: Beauty is in the eye of the beholder--or on the screen of a digital camera. We are our own worst critics, so few people are satisfied with the way they appear in photographs. A Japanese company recently capitalized on this fact...

  15. The Fix Issue 15

    E-Print Network [OSTI]

    Multiple Contributors

    1996-01-01T23:59:59.000Z

    that make you real thirsty and chasi n' 'em down with some of that g reat punch of his. Listenin' to somethin' hot from twelve speakers and dandn' with a redhead in one of those short disco skirts ... " Hutch broke in on his rhapsody. "Starsky, you know... said suddenly. Starsky spotted the g reen convertible a second after Hutch - maybe ten car lengths ahead of them, The WMA - white male American, an antiquated term of description some cops still used - was crouched over his steering wheel, his bushy...

  16. The Fix Issue 16

    E-Print Network [OSTI]

    Multiple Contributors

    1996-01-01T23:59:59.000Z

    - and yellin' at me 'cause it wasn't more, Fiona, at the juice bar ? she's the owner of ] the place and no shrinkin' violet, I'll tell you that ? she grabs the phone to call the cops. It's in the back room, but the store's not very big so I could hear her... Mr. Beard gets the bread from the purses he sees Fiona talkin' on the phone, jawin' to the cops, and he goes apeshit. He yanks the phone out of the wall and then he grabs her by the hair and yanks her down on the floor and calls her ? well, some...

  17. The Fix Issue 4

    E-Print Network [OSTI]

    Multiple Contributors

    1988-01-01T23:59:59.000Z

    :lce. :I sm:lll c:lrribe:ln islan~ w.!:Jtre tw~ men fin~ t.!:Jemst!ues m:lr~one~ foll~wing t.!:Je sinking of t.!:Jeir s.!:Jip. t.!:Je qr:rj(jent. :l!fter spen~ing some time :llone. jM:lnfre~ ~t:lrs~.!:Jk:l fin:lllv encounters Q):.!:Jristi:ln ~utc....!:Jins~n. w.!:Jo .!:Ja~ c:lpt:line~ t.!:Je s.!:Jip. Q):~mmunic:lting wit.!:J s~me blfflcultp. for jM:lnfre~ spe:lks ~nlp :I little ~nglis.!:J . .!:Je procee~s t~ t:lke Q):.!:Jrlstl:ln t~ w.!:Jere .!:Je .!:J:lb c:lmpe~ ~n t.!:Je ot.!:Jer si~e ~f t.!:Je isl...

  18. The Fix Issue 18

    E-Print Network [OSTI]

    Multiple Contributors

    1998-01-01T23:59:59.000Z

    FOR A COMMITMENT? WE'RE PARTNERS! THAT'S A PRETTY BIG COMMITMENT. 6 ? ? SHOW? ~ou COl) coli I...(Q 0 cO\\JJCrd fer doll1(3 IT tl)15 ~ buT I jJ5T couldl)'T look II)TO T~05Q ooouttful bluQ Qvp.5 of vpcr5 ol)d ~ Ol)~ of T~15. 13Q.IIQ\\JQ I...(Q bu~ T.... This was too new, too complicated, and he didn't know what the boundaries were. Both of them had a life-long tendency to fall hard and fast first and think relationships through later. He'd known th,is man for eight years, but now everything was changing...

  19. The Fix Issue 12

    E-Print Network [OSTI]

    Multiple Contributors

    1993-01-01T23:59:59.000Z

    the bottom of my heart. Lynna Bright, Sue-Anne Hartwick, Monica Rose Kiesel, Tabby Davis, Jennet Morgan, Susan Burchfield, Marian Kelly, Leah Starsky, Rosemary Callahan, Theresa Kyle, Ellen Morris your stories will live in my heart forever. Artists TACS...

  20. The Fix Issue17 

    E-Print Network [OSTI]

    Multiple Contributors

    1997-01-01T23:59:59.000Z

    Argentina de Gastroenterologia. Buenos Aires. Wm (W1 AC804H) Acta Ichthyol et Piscat-- Acta Ichthyologica et Piscatoria. Academy of Agriculture in Szczecin. Faculty of Marine Fisheries and Food Technology. Szczecin, Polska. Wa (QL614.A28 ) Acta Med...) Adhesion and Microorganism Pathogenicity See Ciba Found Symp (80) 1981 Advances Int Med-- Advances in Internal Medicine. Chicago. Wm(W1 AD653) African J Clin and Exper Immunol-- African Journal of Clinical and Experimental Immunology. Bloemfontein...

  1. The Fix Issue 10

    E-Print Network [OSTI]

    Multiple Contributors

    1991-01-01T23:59:59.000Z

    to risk that. I need him too damn much." "So what are you gonna do?" Huggy asked. "Handle it." He ordered another beer. -( WCQ> 7 ? art ?' vp ],pnna 31ilrigut The America Manfred had dreamed of before he came to its shore had been like a perfect gem...

  2. The Fix Issue 21 

    E-Print Network [OSTI]

    Multiple Contributors

    2000-01-01T23:59:59.000Z

    . 'Tony's? They finished remodeling last month, didn't they?" Starsky nodded, turning left at the light. 4 1 f r r listo Tony must've spent a bundle. Hutch felt a sudden burst of nostalgia for the place the way it used to be, dark wood... is happening in your kitchen around those steaks." "Oh yeah! Did I hear the magic word? Hey, Huggy, you bring us some food?" ? Starsky stood in thedoorway, hishands braced onthe door frame. His jeans were [ badly grass-stained and his blue t-shirt was torn...

  3. The Fix Issue 20 

    E-Print Network [OSTI]

    Multiple Contributors

    2000-01-01T23:59:59.000Z

    yellowed, pebble-like object and examined it. "Hey, Wang!" Starsky called, "I think I found a tooth!" 6 "Bag it!" called back Wang, who was finishing up collecting a grass-blood-and-dirt sample for analysis. Starsky pulled a plastic bag from his hip... the impoverished. A few blocks to the southwest was the University of Southern California - the University of Spoiled Children. Established back when the neighborhood was rich and tony, it was close to downtown L.A., but not too close. Now, go south a little...

  4. Fixing Failed States

    E-Print Network [OSTI]

    Yoo, John

    2010-01-01T23:59:59.000Z

    Islands 15. Timor-Leste 16. Haiti 17. Sao Tome and PrincipePakistan 11. Ivory Coast 12. Haiti 13. Burma 14. Kenya 15.In Somalia, Rwanda, Haiti, and the former Yugoslavia, failed

  5. The Fix Issue 2

    E-Print Network [OSTI]

    Multiple Contributors

    1988-01-01T23:59:59.000Z

    's undergarment. One red undergarment, ? worn as an outer garment, 1n a fashion statement not soon to be forgotten. Never. Ever. Red. News from Hollywood. Wish I had some rumor-mill grapevine stuff, but all I've heard lately comes from the trades. "Secret...

  6. Perching with fixed wings

    E-Print Network [OSTI]

    Cory, Rick E. (Rick Efren)

    2008-01-01T23:59:59.000Z

    Human pilots have the extraordinary ability to remotely maneuver small Unmanned Aerial Vehicles (UAVs) far outside the flight envelope of conventional autopilots. Given the tremendous thrust-to-weight ratio available on ...

  7. The Fix Issue 19

    E-Print Network [OSTI]

    Multiple Contributors

    1999-01-01T23:59:59.000Z

    pushed down on the handlebars and brought it back down on both wheels. Taking a tight tum he charged down the beach. Hutch listened until the droning of the engine faded in the distance, then let himself out of the boat house. He climbed the stairs... down at his duffle bag by his feet when he caught the dark blue uniforhled legs of the instructor out of the corner of his eye. He s traightened up instantly just as the man stopped in front of him. "Name?" "Ken Hutchinson, sir." Hutch tried to keep...

  8. [FIXED RATE GUARANTEED OBLIGATIONS]

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015Visiting Strong,Women @JoinEnergy ZEROFIXED RATE GUARANTEED

  9. GC/MS characterization of condensable tars in the output stream of a stirred fixed-bed gasifier

    SciTech Connect (OSTI)

    Lamey, S.C.; McCaskill, K.B.; Smith, R.R.

    1981-12-01T23:59:59.000Z

    The output stream of the stirred fixed-bed gasifier at the Morgantown Energy Technology Center was sampled for total entrained material. A major portion of the entrained material, in addition to particles, is condensable tar that is subsequently removed from the process gas by wet scrubbing. Characterization of the entrained materials, specifically the tar, is important to establish contaminant levels and to evaluate performance of downstream cleanup units. Samples of tars were collected from the process unit in a combined ice, dry ice, and liquid nitrogen sampler and stored in a refrigerator. The tar samples were then separated into asphaltene, neutral oil, tar acid, and base fractions by solvent extraction using toluene, pentane, sulfuric acid, and potassium hydroxide extraction. Characterization of the fractions obtained from these tars include IR, UV, GC, and GC/MS analysis. The mass spectrometer analysis of the various isolates shows that many individual peaks in the gas chromatograph are in fact mixtures that can be readily identified by the mass spectrometer. It was found that many of the species identified in these fractions were members of aromatic homologous series consisting of parent, mono, di, and tri substituted compounds. Compound identification was made by comparison of the data system library and standard reference spectra. This paper will discuss the instrumental approach and limitation of the GC/MS and the results of the characterization studies of entrained hydrocarbons collected from the gasifier stream.

  10. Selective CO2 Capture from Flue Gas Using Metal-Organic Frameworks?A Fixed Bed Study

    SciTech Connect (OSTI)

    Liu, Jian; Tian, Jian; Thallapally, Praveen K.; McGrail, B. Peter

    2012-05-03T23:59:59.000Z

    It is important to capture carbon dioxide from flue gas which is considered to be the main reason to cause global warming. CO2/N2 separation by novel adsorbents is a promising method to reduce CO2 emission but effect of water and CO2/N2 selectivity is critical to apply the adsorbents into practical applications. A very well known, Metal Organic Framework, NiDOBDC (Ni-MOF-74 or CPO-27-Ni) was synthesized through a solvothermal reaction and the sample (500 to 800 microns) was used in a fixed bed CO2/N2 breakthrough study with and without H2O. The Ni/DOBDC pellet has a high CO2 capacity of 3.74 mol/kg at 0.15 bar and a high CO2/N2 selectivity of 38, which is much higher than those of reported MOFs and zeolites under dry condition. Trace amount of water can impact CO2 adsorption capacity as well as CO2/N2 selectivity for the Ni/DOBDC. However, Ni/DOBDC can retain a significant CO2 capacity and CO2/N2 selectivity at 0.15 bar CO2 with 3% RH water. These results indicate a promising future to use the Ni/DOBDC in CO2 capture from flue gas.

  11. Inverse scattering at fixed energy for massive charged Dirac fields in de Sitter-Reissner-Nordström black holes

    E-Print Network [OSTI]

    Damien Gobin

    2014-12-02T23:59:59.000Z

    In this paper, we consider massive charged Dirac fields propagating in the exterior region of de Sitter-Reissner-Nordstr\\"om black holes.We show that the parameters of such black holes are uniquely determined by the partial knowledge of the corresponding scattering operator $S(\\lambda)$ at a fixed energy $\\lambda$.More precisely, we consider the partial wave scattering operators $S(\\lambda,n)$ (here $\\lambda \\in \\mathbb{R}$ is the energy and $n \\in \\mathbb{N}^{\\star}$ denotes the angular momentum) defined as the restrictions of the full scattering operator on a well chosen basis of spin-weighted spherical harmonics.We prove that the knowledge of the scattering operators $S(\\lambda,n)$, for all $n \\in \\mathcal{L}$, where $\\mathcal{L}$ is a subset of $\\mathbb{N}^{\\star}$ that satisfies the M\\"untz condition $\\sum\\_{n \\in \\mathcal{L}} \\frac{1}{n} = + \\infty$, allows to recover the mass, the charge and the cosmological constant of a dS-RN black hole.The main tool consists in the complexification of the angular momentum $n$ and in studying the analytic properties of the "unphysical" corresponding data in the complex variable $z$.

  12. Fixed Bed Countercurrent Low Temperature Gasification of Dairy Biomass and Coal-Dairy Biomass Blends Using Air-Steam as Oxidizer

    E-Print Network [OSTI]

    Gordillo Ariza, Gerardo

    2010-10-12T23:59:59.000Z

    W) countercurrent fixed bed gasifier was rebuilt to perform gasification studies under quasisteady state conditions using dairy biomass (DB) as feedstock and various air-steam mixtures as oxidizing sources. A DB-ash (from DB) blend and a DB-Wyoming coal blend were...

  13. FLOW RESISTANCE IN OPEN CHANNELS WITH FIXED AND MOVABLE BED Francisco J.M. Simes, USGS Geomorphology and Sediment Transport Laboratory, 4620 Technology

    E-Print Network [OSTI]

    FLOW RESISTANCE IN OPEN CHANNELS WITH FIXED AND MOVABLE BED Francisco J.M. Simões, USGS to bed movement without requiring previous knowledge of sediment transport conditions. Comparisons accurately predicts total friction losses in channels and natural rivers with plane beds, regardless

  14. Fig. 1: Simulation setup in 3D domain (a). Single loop (b) with fixed capacitors (blue arrows) and ports (red arrows; square: input, circle

    E-Print Network [OSTI]

    were assigned to all materials and a series resistance was added to each fixed capacitor to account for component losses. The input/decoupling circuits were replaced by 50 Ohm ports (Fig 1b, 80 ports in total give the min/mean/max B1 + field [nT/V], inhomogeneity [%] and safety excitation efficiency (SEE [4

  15. Fluid Mechanics -1 An oil is used in a heat exchanger. The internal geometry consists of many small diameter tubes of fixed length

    E-Print Network [OSTI]

    Virginia Tech

    Fluid Mechanics - 1 An oil is used in a heat exchanger. The internal geometry consists of many small diameter tubes of fixed length (mounted in a bundle as indicated in the sketch). The oil is pumped). Assume the steady flow of the oil through each small tube is in the laminar regime. It is proposed

  16. Intermolecular forces and fixed-node diffusion Monte Carlo: A brute force test of accuracies for He2 and HeLiH

    E-Print Network [OSTI]

    Anderson, James B.

    in the direction of developing and testing alternative methods for predicting accurate potential energy surfaces energy of van der Waals systems was investigated. Tests were carried out by simulating the electronic indicating a high accuracy for the fixed-node approximation. Also, our interaction energies for He

  17. SiGe Prototype Chip Design Implementing CMOS Fixed Bit-Load Drivers and Receivers for Next Generation High-Speed Board-Level Interconnect

    E-Print Network [OSTI]

    Bakos, Jason D.

    SiGe Prototype Chip Design Implementing CMOS Fixed Bit-Load Drivers and Receivers for Next. These designs were fabricated as part of a multi-project die in IBM's .5um 5HP SiGe process. 1. Introduction Figure 1 shows our multi-project test die, manufactured in IBM's .5 um 5HP SiGe process. In this paper

  18. Contents ISS and Lyapunov functions Input-to-state stability and interconnections Lyapunov functions Simplicial fixed point algor Lyapunov Functions for Interconnected Systems

    E-Print Network [OSTI]

    Hafstein, Sigurður Freyr

    Contents ISS and Lyapunov functions Input-to-state stability and interconnections Lyapunov functions Simplicial fixed point algor Lyapunov Functions for Interconnected Systems Fabian Wirth Institute of Mathematics, University of W¨urzburg Workshop on Algorithms for Dynamical Systems and Lyapunov Functions

  19. Verification of the New FAST v8 Capabilities for the Modeling of Fixed-Bottom Offshore Wind Turbines: Preprint

    SciTech Connect (OSTI)

    Barahona, B.; Jonkman, J.; Damiani, R.; Robertson, A.; Hayman, G.

    2014-12-01T23:59:59.000Z

    Coupled dynamic analysis has an important role in the design of offshore wind turbines because the systems are subject to complex operating conditions from the combined action of waves and wind. The aero-hydro-servo-elastic tool FAST v8 is framed in a novel modularization scheme that facilitates such analysis. Here, we present the verification of new capabilities of FAST v8 to model fixed-bottom offshore wind turbines. We analyze a series of load cases with both wind and wave loads and compare the results against those from the previous international code comparison projects-the International Energy Agency (IEA) Wind Task 23 Subtask 2 Offshore Code Comparison Collaboration (OC3) and the IEA Wind Task 30 OC3 Continued (OC4) projects. The verification is performed using the NREL 5-MW reference turbine supported by monopile, tripod, and jacket substructures. The substructure structural-dynamics models are built within the new SubDyn module of FAST v8, which uses a linear finite-element beam model with Craig-Bampton dynamic system reduction. This allows the modal properties of the substructure to be synthesized and coupled to hydrodynamic loads and tower dynamics. The hydrodynamic loads are calculated using a new strip theory approach for multimember substructures in the updated HydroDyn module of FAST v8. These modules are linked to the rest of FAST through the new coupling scheme involving mapping between module-independent spatial discretizations and a numerically rigorous implicit solver. The results show that the new structural dynamics, hydrodynamics, and coupled solutions compare well to the results from the previous code comparison projects.

  20. Test Plan for Evaluating Hammer and Fixed Cutter Grinders Using Multiple Varieties and Moistures of Biomass Feedstock

    SciTech Connect (OSTI)

    Not listed

    2007-07-01T23:59:59.000Z

    Biomass preprocessing is a critical operation in the preparation of feedstock for the front-end of a cellulosic ethanol biorefinery. Its purpose is to chop, grind, or otherwise format the biomass material into a suitable feedstock for optimum conversion to ethanol and other bioproducts. Without this operation, the natural size, bulk density, and flowability characteristics of harvested biomass would decrease the capacities and efficiencies of feedstock assembly unit operations and biorefinery conversion processes to the degree that programmatic cost targets could not be met. The preprocessing unit operation produces a bulk flowable material that 1) improves handling and conveying efficiencies throughout the feedstock assembly system and biorefinery 2) increases biomass surface areas for improved pretreatment efficiencies, 3) reduces particle sizes for improved feedstock uniformity and density, and 4) fractionates structural components for improved compositional quality. The Idaho National Laboratory (INL) is tasked with defining the overall efficiency/effectiveness of current commercial hammer and fixed cutter grinding systems and other connecting systems such as harvest and collection, storage, transportation, and handling for a wide variety of feedstock types used in bioethanol or syngas production. This test plan details tasks and activities for two separate full-scale grinding tests: Material Characterization Test and Machine Characterization Test. For the Material Characterization Test, a small amount (~5-7 tons each) of several feedstock varieties will be ground. This test will define the fractionation characteristics of the grinder that affect the bulk density, particle size distribution, and quality of the size reduced biomass resulting from different separation screen sizes. A specific screen size will be selected based on the characteristics of the ground material. The Machine Characterization Test will then use this selected screen to grind several 30-ton batches of different feedstock varieties and moistures. This test will focus on identifying the performance parameters of the grinding system specific to the feed, fractionation, and screen separation components and their affect on machine capacity and efficiency.

  1. Feasibility Study of Economics and Performance of Solar Photovoltaics at Massachusetts Military Reservation. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites

    SciTech Connect (OSTI)

    Stafford, B.; Robichaud, R.; Mosey, G.

    2011-07-01T23:59:59.000Z

    This report presents the results of an assessment of the technical and economic feasibility of deploying photovoltaics (PV) systems on a superfund site located within the Massachusetts Military Reservation (MMR). The site was assessed for possible PV installations. The cost, performance, and site impacts of different PV options were estimated. The economics of the potential systems were analyzed using an electric rate of $0.17/kWh and incentives offered in the State of Massachusetts, such as the solar renewable energy credits. According to calculations, MMR can place 8 MW of ballast-weighted, ground-mounted PV systems on the crowns of the three landfill caps and the borrow pit with the PV modules tilted at 30 degrees.

  2. Conditions for reliable time-resolved dosimetry of electronic portal imaging devices for fixed-gantry IMRT and VMAT

    SciTech Connect (OSTI)

    Yeo, Inhwan Jason; Patyal, Baldev; Mandapaka, Anant [Department of Radiation Medicine, Loma Linda University Medical Center, Loma Linda, California 92354 (United States); Jung, Jae Won [Department of Physics, East Carolina University, Greenville, North Carolina 27858 (United States); Yi, Byong Yong [Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland 21201 (United States); Kim, Jong Oh [Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15232 (United States)

    2013-07-15T23:59:59.000Z

    Purpose: The continuous scanning mode of electronic portal imaging devices (EPID) that offers time-resolved information has been newly explored for verifying dynamic radiation deliveries. This study seeks to determine operating conditions (dose rate stability and time resolution) under which that mode can be used accurately for the time-resolved dosimetry of intensity-modulated radiation therapy (IMRT) beams.Methods: The authors have designed the following test beams with variable beam holdoffs and dose rate regulations: a 10 Multiplication-Sign 10 cm open beam to serve as a reference beam; a sliding window (SW) beam utilizing the motion of a pair of multileaf collimator (MLC) leaves outside the 10 Multiplication-Sign 10 cm jaw; a step and shoot (SS) beam to move the pair in step; a volumetric modulated arc therapy (VMAT) beam. The beams were designed in such a way that they all produce the same open beam output of 10 Multiplication-Sign 10 cm. Time-resolved ion chamber measurements at isocenter and time-resolved and integrating EPID measurements were performed for all beams. The time-resolved EPID measurements were evaluated through comparison with the ion chamber and integrating EPID measurements, as the latter are accepted procedures. For two-dimensional, time-resolved evaluation, a VMAT beam with an infield MLC travel was designed. Time-resolved EPID measurements and Monte Carlo calculations of such EPID dose images for this beam were performed and intercompared.Results: For IMRT beams (SW and SS), the authors found disagreement greater than 2%, caused by frame missing of the time-resolved mode. However, frame missing disappeared, yielding agreement better than 2%, when the dose rate of irradiation (and thus the frame acquisition rates) reached a stable and planned rate as the dose of irradiation was raised past certain thresholds (a minimum 12 s of irradiation per shoot used for SS IMRT). For VMAT, the authors found that dose rate does not affect the frame acquisition rate, thereby causing no frame missing. However, serious inplanar nonuniformities were found. This could be overcome by sacrificing temporal resolution (10 frames or 0.95 s/image): the continuous images agreed with ion chamber responses at the center of EPID and the calculation two-dimensionally in a time-resolved manner.Conclusions: The authors have determined conditions under which the continuous mode can be used for time-resolved dosimetry of fixed-gantry IMRT and VMAT and demonstrated it for VMAT.

  3. CO-FIRING COAL: FEEDLOT AND LITTER BIOMASS (CFB AND CLB) FUELS IN PULVERIZED FUEL AND FIXED BED BURNERS

    SciTech Connect (OSTI)

    Kalyan Annamalai; John Sweeten; Saqib Mukhtar; Ben Thein; Gengsheng Wei; Soyuz Priyadarsan; Senthil Arumugam; Kevin Heflin

    2003-08-28T23:59:59.000Z

    Intensive animal feeding operations create large amounts of animal waste that must be safely disposed of in order to avoid environmental degradation. Cattle feedlots and chicken houses are two examples. In feedlots, cattle are confined to small pens and fed a high calorie grain-diet diet in preparation for slaughter. In chicken houses, thousands of chickens are kept in close proximity. In both of these operations, millions of tons of manure are produced every year. The manure could be used as a fuel by mixing it with coal in a 90:10 blend and firing it in an existing coal suspension fired combustion systems. This technique is known as co-firing, and the high temperatures produced by the coal will allow the biomass to be completely combusted. Reburn is a process where a small percentage of fuel called reburn fuel is injected above the NO{sub x} producing, conventional coal fired burners in order to reduce NO{sub x}. The manure could also be used as reburn fuel for reducing NO{sub x} in coal fired plants. An alternate approach of using animal waste is to adopt the gasification process using a fixed bed gasifier and then use the gases for firing in gas turbine combustors. In this report, the cattle manure is referred to as feedlot biomass (FB) and chicken manure as litter biomass (LB). The report generates data on FB and LB fuel characteristics. Co-firing, reburn, and gasification tests of coal, FB, LB, coal: FB blends, and coal: LB blends and modeling on cofiring, reburn systems and economics of use of FB and LB have also been conducted. The biomass fuels are higher in ash, lower in heat content, higher in moisture, and higher in nitrogen and sulfur (which can cause air pollution) compared to coal. Small-scale cofiring experiments revealed that the biomass blends can be successfully fired, and NO{sub x} emissions will be similar to or lower than pollutant emissions when firing coal. Further experiments showed that biomass is twice or more effective than coal when used in a reburning process. Computer simulations for coal: LB blends were performed by modifying an existing computer code to include the drying and phosphorus (P) oxidation models. The gasification studies revealed that there is bed agglomeration in the case of chicken litter biomass due to its higher alkaline oxide content in the ash. Finally, the results of the economic analysis show that considerable fuel cost savings can be achieved with the use of biomass. In the case of higher ash and moisture biomass, the fuel cost savings is reduced.

  4. Studies of Transverse-Momentum-Dependent distributions with A Fixed-Target ExpeRiment using the LHC beams (AFTER@LHC)

    E-Print Network [OSTI]

    L. Massacrier; M. Anselmino; R. Arnaldi; S. J. Brodsky; V. Chambert; W. den Dunnen; J. P. Didelez; B. Genolini; E. G. Ferreiro; F. Fleuret; Y. Gao; C. Hadjidakis; I. Hrivnacova; J. P. Lansberg; C. Lorcé; R. Mikkelsen; C. Pisano; A. Rakotozafindrabe; P. Rosier; I. Schienbein; M. Schlegel; E. Scomparin; B. Trzeciak; U. I. Uggerhoj; R. Ulrich; Z. Yang

    2015-02-03T23:59:59.000Z

    We report on the studies of Transverse-Momentum-Dependent distributions (TMDs) at a future fixed-target experiment --AFTER@LHC-- using the $p^+$ or Pb ion LHC beams, which would be the most energetic fixed-target experiment ever performed. AFTER@LHC opens new domains of particle and nuclear physics by complementing collider-mode experiments, in particular those of RHIC and the EIC projects. Both with an extracted beam by a bent crystal or with an internal gas target, the luminosity achieved by AFTER@LHC surpasses that of RHIC by up to 3 orders of magnitude. With an unpolarised target, it allows for measurements of TMDs such as the Boer-Mulders quark distributions and the distribution of unpolarised and linearly polarised gluons in unpolarised protons. Using polarised targets, one can access the quark and gluon Sivers TMDs through single transverse-spin asymmetries in Drell-Yan and quarkonium production. In terms of kinematics, the fixed-target mode combined with a detector covering $\\eta_{\\rm lab} \\in [1,5]$ allows one to measure these asymmetries at large $x^\\uparrow$ in the polarised nucleon.

  5. Development of a fixed abrasive slicing technique (FAST) for reducing the cost of photovoltaic wafers. Final subcontract report, 9 January 1991--14 April 1991

    SciTech Connect (OSTI)

    Schmid, F. [Crystal Systems, Inc., Salem, MA (United States)

    1991-12-01T23:59:59.000Z

    This report examines a wafer slicing technique developed by Crystal Systems, Inc. that reduces the cost of photovoltaic wafers. This fixed, abrasive slicing technique (FAST) uses a multiwire bladepack and a diamond-plated wirepack; water is the coolant. FAST is in the prototype production stage and reduces expendable material costs while retaining the advantages of a multiwire slurry technique. The cost analysis revealed that costs can be decreased by making more cuts per bladepack and slicing more wafers per linear inch. Researchers studied the degradation of bladepacks and increased wirepack life. 21 refs.

  6. Application of fixed scale approach to static quark free energies in quenched and 2+1 flavor lattice QCD with improved Wilson quark action

    E-Print Network [OSTI]

    Y. Maezawa; T. Umeda; S. Aoki; S. Ejiri; T. Hatsuda; K. Kanaya; H. Ohno

    2012-10-24T23:59:59.000Z

    Free energies between static quarks and Debye screening masses in the quark-gluon plasma are studied on the basis of Polyakov-line correlations in lattice simulations of 2+1 flavors QCD with the renormalization-group improved gluon action and the $O(a)$-improved Wilson quark action. We perform simulations at $m_{\\rm PS}/m_{\\rm V} = 0.63$ (0.74) for light (strange) flavors with lattice sizes of $32^3 \\times N_t$ with $N_t=4$--12. We adopt the fixed-scale approach, where temperature can be varied without changing the spatial volume and renormalization factor. We find that, at short distance, the free energies of static quarks in color-singlet channel converge to the static-quark potential evaluated from the Wilson-loop at zero-temperature, in accordance with the expected insensitivity of short distance physics to the temperature. At long distance, the free energies of static quarks approach to twice the single-quark free energies, implying that the interaction between static quarks is fully screened. The screening properties can be well described by the screened Coulomb form with appropriate Casimir factor at high temperature. We also discuss a limitation of the fixed-scale approach at high temperature.

  7. Laboratory investigation of the extrusion of North Dakota lignite fines for fixed-bed gasification. Report for September 1982-December 1983

    SciTech Connect (OSTI)

    Furman, A.H.; Smith, D.P.

    1984-01-01T23:59:59.000Z

    Lignite coal will be used as the gasifier feedstock in the first commercial substitute high-Btu fuels plant to be built in the U.S. The Great Plains plant, which is due to go on line in 1984, will use O2 blown, fixed-bed gasifiers to convert lignite coal into a medium Btu gas which is then upgraded to pipeline quality gas for final distribution. Since the fixed-bed gasifier requires a sized feedstock, up to 35% of the incoming run-of-mine lignite could be rejected as fines unless an alternative use can be found for the-1/4-inch fraction. Evaluation tests were run in the General Electric 6-inch single screw coal extruder to test the suitability of this process for utilization of lignite fines. Both organic and inorganic binders were evaluated. Tests were performed on the extrudate to evaluate their mechanical strength as well as their ability to withstand exposure to a high temperature gasification environment. Successful compacts were produced using bentonite clay, processed lignite coal tar, and a commercial coke oven pitch as the binding agent.

  8. The effects of increased CO[sub 2] on the competitive ability of Lupinus arboreus, a dominant nitrogen-fixing shrub

    SciTech Connect (OSTI)

    Wallace, A.M. (State Univ. of New York, Stony Brooks (United States))

    1993-06-01T23:59:59.000Z

    Plant responses to increased atmospheric CO[sub 2] have been shown to be both species-specific and dependent on other environmental factors, potentially changing competitive interactions and altering community structure. The competitive response of a dominant nitrogen-fixing shrub to an introduced annual (Bromus diandrus) and a native perennial grass (Bromus carinatus) was measured under ambient and high CO[sub 2] and two nitrogen levels. These species coexist in a generally nitrogen-limited coastal grassland reserve besieged with alien species. The relative competitive ability of the lupin increased with CO[sub 2] for all treatments, with the largest difference occurring at low nitrogen in competition with the introduced annual. This study provides a global change perspective for those interested in conserving native Californian grassland species, as well as the first data on the competitive response of nitrogen-fixers to high CO[sub 2].

  9. Pyrolysis of waste animal fats in a fixed-bed reactor: Production and characterization of bio-oil and bio-char

    SciTech Connect (OSTI)

    Ben Hassen-Trabelsi, A., E-mail: aidabenhassen@yahoo.fr [Centre de Recherche et de Technologies de l’Energie (CRTEn), Technopôle Borj-Cédria, B.P 95, 2050, Hammam Lif (Tunisia); Kraiem, T. [Centre de Recherche et de Technologies de l’Energie (CRTEn), Technopôle Borj-Cédria, B.P 95, 2050, Hammam Lif (Tunisia); Département de Géologie, Université de Tunis, 2092, Tunis (Tunisia); Naoui, S. [Centre de Recherche et de Technologies de l’Energie (CRTEn), Technopôle Borj-Cédria, B.P 95, 2050, Hammam Lif (Tunisia); Belayouni, H. [Département de Géologie, Université de Tunis, 2092, Tunis (Tunisia)

    2014-01-15T23:59:59.000Z

    Highlights: • Produced bio-fuels (bio-oil and bio-char) from some animal fatty wastes. • Investigated the effects of main parameters on pyrolysis products distribution. • Determined the suitable conditions for the production of the maximum of bio-oil. • Characterized bio-oils and bio-chars obtained from several animal fatty wastes. - Abstract: Several animal (lamb, poultry and swine) fatty wastes were pyrolyzed under nitrogen, in a laboratory scale fixed-bed reactor and the main products (liquid bio-oil, solid bio-char and syngas) were obtained. The purpose of this study is to produce and characterize bio-oil and bio-char obtained from pyrolysis of animal fatty wastes. The maximum production of bio-oil was achieved at a pyrolysis temperature of 500 °C and a heating rate of 5 °C/min. The chemical (GC–MS analyses) and spectroscopic analyses (FTIR analyses) of bio-oil showed that it is a complex mixture consisting of different classes of organic compounds, i.e., hydrocarbons (alkanes, alkenes, cyclic compounds…etc.), carboxylic acids, aldehydes, ketones, esters,…etc. According to fuel properties, produced bio-oils showed good properties, suitable for its use as an engine fuel or as a potential source for synthetic fuels and chemical feedstock. Obtained bio-chars had low carbon content and high ash content which make them unattractive for as renewable source energy.

  10. Heavy-quark free energy at finite temperature with 2+1 flavors of improved Wilson quarks in fixed scale approach

    E-Print Network [OSTI]

    Y. Maezawa; S. Aoki; S. Ejiri; T. Hatsuda; K. Kanaya; H. Ohno; T. Umeda

    2009-11-02T23:59:59.000Z

    The free energy between a static quark and an antiquark is studied by using the color-singlet Polyakov-line correlation at finite temperature. We perform simulations on $32^3 \\times 12$, 10, 8, 6, 4 lattices in the high temperature phase with the RG-improved gluon action and 2+1 flavors of the clover-improved Wilson quark action. Since the simulations are based on the fixed scale approach that the temperature can be varied without changing the spatial volume and renormalization factor, it is possible to investigate temperature dependence of the heavy-quark free energy without any adjustment of the overall constant. We find that, the heavy-quark free energies at short distance converge to the heavy-quark potential evaluated from the Wilson-loop operator at zero temperature, in accordance with the expected insensitivity of short distance physics to the temperature. At long distance, the heavy-quark free energies approach to twice the single-quark free energies, implying that the interaction between heavy quarks is screened. The Debye screening mass obtained from the long range behavior of the heavy-quark free energy is compared with results of the thermal perturbation theory and those of $N_f=2$ and $N_f=0$ lattice simulations.

  11. Optimization of the pyrolysis process of empty fruit bunch (EFB) in a fixed-bed reactor through a central composite design (CCD)

    SciTech Connect (OSTI)

    Mohamed, Alina Rahayu; Hamzah, Zainab; Daud, Mohamed Zulkali Mohamed [School of Bioprocess Engineering, Jejawi Complex of Academics (3), UniMAP, 02600 Arau Perlis (Malaysia)

    2014-07-10T23:59:59.000Z

    The production of crude palm oil from the processing of palm fresh fruit bunches in the palm oil mills in Malaysia hs resulted in a huge quantity of empty fruit bunch (EFB) accumulated. The EFB was used as a feedstock in the pyrolysis process using a fixed-bed reactor in the present study. The optimization of process parameters such as pyrolysis temperature (factor A), biomass particle size (factor B) and holding time (factor C) were investigated through Central Composite Design (CCD) using Stat-Ease Design Expert software version 7 with bio-oil yield considered as the response. Twenty experimental runs were conducted. The results were completely analyzed by Analysis of Variance (ANOVA). The model was statistically significant. All factors studied were significant with p-values < 0.05. The pyrolysis temperature (factor A) was considered as the most significant parameter because its F-value of 116.29 was the highest. The value of R{sup 2} was 0.9564 which indicated that the selected factors and its levels showed high correlation to the production of bio-oil from EFB pyrolysis process. A quadratic model equation was developed and employed to predict the highest theoretical bio-oil yield. The maximum bio-oil yield of 46.2 % was achieved at pyrolysis temperature of 442.15 °C using the EFB particle size of 866 ?m which corresponded to the EFB particle size in the range of 710–1000 ?m and holding time of 483 seconds.

  12. Microsoft Word - 4CO 11 1a

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

    spectrum. Also, we only used short term data from a single climate (high desert). Future work will include analyses using fixed tilt module IV data, take advantage of new...

  13. AUTOMATED DYNAMIC MODE MULTIDIRECTIONAL UV LITHOGRAPHY FOR COMPLEX 3-D MICROSTRUCTURES

    E-Print Network [OSTI]

    filter structure, a mixer, and micronozzle and horn arrays [7, 10]. However, the previous exercises have been limited to either a purely static mode, in which the tilted stage is fixed during each UV exposure

  14. The long time behavior of diffusion in tilted periodic potentials

    E-Print Network [OSTI]

    2013-09-18T23:59:59.000Z

    Sep 18, 2013 ... In order to obtain more quantitative information about dynamical .... per(T),r = 1,2, denotes the space of the restriction to T of functions in Cr(R) ...

  15. Unique determination of the -CN group tilt angle in Langmuir...

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

    angle and phase. Abstract: The relative phase and amplitude ratio between the ssp and ppp polarization combinations of the vibrational sum-frequency generation (SFG) response...

  16. Dynamics of Tilt-based Browsing on Mobile Devices

    E-Print Network [OSTI]

    Cho, S.J.; Murray-Smith, R.

    Cho,S.J. Murray-Smith,R. Choi,C. Sung,Y. Lee,K. Kim,Y.B. CHI '07 extended abstracts on Human factors in computing systems, http://doi.acm.org/10.1145/1240866.1240930 pp 1947 - 1952 ACM Press

  17. Vacuum compatible, high-speed, 2-D mirror tilt stage

    DOE Patents [OSTI]

    Denham; Paul E. (Crockett, CA)

    2007-09-25T23:59:59.000Z

    A compact and vacuum compatible magnetic-coil driven tiltable stage that is equipped with a high efficiency reflective coating can be employed as a scanner in EUV applications. The drive electronics for the scanner is fully in situ programmable and rapidly switchable.

  18. Concrete Tilt-up Construction on the Farm.

    E-Print Network [OSTI]

    Hobgood, Price; Kunze, Otto R.

    1957-01-01T23:59:59.000Z

    , dairy barns cmd poultry houses, which were collected from 23 land-grant colleges throughout the United States, showed that the walls of most farm buildings in these classificatio,ns can be constructed from 8 x 8 or 8 x 10-foot panel modules... with thicknesses of 4 to 6 inches. A sand bed covered with 4 mil polyethylene sheeting made a satisfactory casting bed. A minimum of two footing holes 8 or more inches in diameter and 30 inches deep were used to support line or end pilasters, while a minimum...

  19. ''Tilting'' the universe with the landscape multiverse: the dark flow

    SciTech Connect (OSTI)

    Mersini-Houghton, L. [Department of Physics and Astronomy, UNC, Chapel Hill, NC 27599-3255 (United States)] [Department of Physics and Astronomy, UNC, Chapel Hill, NC 27599-3255 (United States); Holman, R., E-mail: mersini@physics.unc.edu, E-mail: rh4a@andrew.cmu.edu [Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213 (United States)

    2009-02-15T23:59:59.000Z

    We argue that the recent observations of large scale bulk flows by Kashlinsky et al. has a natural explanation in terms of superhorizon inhomogeneities induced by nonlocal entanglement of our Hubble volume with modes and domains beyond the horizon. This entanglement gives rise to corrections to the Newtonian potential on a characteristic scale L{sub 1} {approx_equal} 10{sup 3}H{sup -1}, and it induces a dipole and quadrupole contribution in the CMB. We also show that these induced multipoles are aligned with each other, with the alignment axis normal to their plane being oriented along the preferred frame determined by the dipole. We also give other potential tests of our hypothesis.

  20. Performance of the MROI fast tip-tilt correction system

    E-Print Network [OSTI]

    Young, John; Buscher, David; Fisher, Martin; Haniff, Christopher; Rea, Alexander; Seneta, Eugene; Sun, Xiaowei; Wilson, Donald; Farris, Allen; Olivares, Andres

    2014-07-15T23:59:59.000Z

    runs in ordinary Linux. The application communicates with sensors (either analogue voltage or I 2 C types) and a heater via two USB-driven Labjack U3 boards. The control/display GUI provides a graphical user interface for commanding the system... and its CPU sit in a the temperature controlled rack #22; cabinet #16;Q5#17; #22; within the telescope enclosure. A separate services interface plate (top right) manages the dry air and cooling water for the system and includes manual valves and a flow...

  1. File:NREL-africa-tilt.pdf | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to: navigation,SizeEthiopiametstak.pdfMFSA06-2012Afghanistan -PDF)Plate

  2. File:NREL-asia-tilt.pdf | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to:ar-80m.pdf Jump to: navigation, search File File historytilt.pdf Jump

  3. An acoustic wave equation for modeling in tilted TI media

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProductsAlternative FuelsSanta FeAuthorization| Iron is|

  4. Regional characteristics, tilt domains, and extensional history of the Late

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation, searchRayreviewAl., 2005) |RGGI JumpCenozoic Basin and

  5. Volumetric-modulated arc therapy vs conventional fixed-field intensity-modulated radiotherapy in a whole-ventricular irradiation: A planning comparison study

    SciTech Connect (OSTI)

    Sakanaka, Katsuyuki [Department of Radiation Oncology and Image-Applied Therapy, Kyoto University Graduate School of Medicine, Kyoto (Japan); Mizowaki, Takashi, E-mail: mizo@kuhp.kyoto-u.ac.jp [Department of Radiation Oncology and Image-Applied Therapy, Kyoto University Graduate School of Medicine, Kyoto (Japan); Sato, Sayaka; Ogura, Kengo; Hiraoka, Masahiro [Department of Radiation Oncology and Image-Applied Therapy, Kyoto University Graduate School of Medicine, Kyoto (Japan)

    2013-07-01T23:59:59.000Z

    This study evaluated the dosimetric difference between volumetric-modulated arc therapy (VMAT) and conventional fixed-field intensity-modulated radiotherapy (cIMRT) in whole-ventricular irradiation. Computed tomography simulation data for 13 patients were acquired to create plans for VMAT and cIMRT. In both plans, the same median dose (100% = 24 Gy) was prescribed to the planning target volume (PTV), which comprised a tumor bed and whole ventricles. During optimization, doses to the normal brain and body were reduced, provided that the dose constraints of the target coverage were satisfied. The dose-volume indices of the PTV, normal brain, and body as well as monitor units were compared between the 2 techniques by using paired t-tests. The results showed no significant difference in the homogeneity index (0.064 vs 0.065; p = 0.824) of the PTV and conformation number (0.78 vs 0.77; p = 0.065) between the 2 techniques. In the normal brain and body, the dose-volume indices showed no significant difference between the 2 techniques, except for an increase in the volume receiving a low dose in VMAT; the absolute volume of the normal brain and body receiving 1 Gy of radiation significantly increased in VMAT by 1.6% and 8.3%, respectively, compared with that in cIMRT (1044 vs 1028 mL for the normal brain and 3079.2 vs 2823.3 mL for the body; p<0.001). The number of monitor units to deliver a 2.0-Gy fraction was significantly reduced in VMAT compared with that in cIMRT (354 vs 873, respectively; p<0.001). In conclusion, VMAT delivers IMRT to complex target volumes such as whole ventricles with fewer monitor units, while maintaining target coverage and conformal isodose distribution comparable to cIMRT; however, in addition to those characteristics, the fact that the volume of the normal brain and body receiving a low dose would increase in VMAT should be considered.

  6. Department of Veterans Affairs, FONSI - Rooftop solar PV power...

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

    More Documents & Publications Department of Veterans Affairs, FONSI - Ground mounted solar photovoltaic power at San Joaquin National Cemetery Department of Energy Technical...

  7. Queen Anne's County- Solar Zoning

    Broader source: Energy.gov [DOE]

    Queen Anne's County zoning code allows for ground mounted solar arrays in areas zoned as "open space," "agricultural," and "countryside" districts.

  8. adipose-derived cd45 side: Topics by E-print Network

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

    in Spain University of Cambridge - Dspace Summary: The RES-E promotion policy in Spain gave priority to the photovoltaic (henceforth, PV) ground-mounted installations. For...

  9. Volumetric-modulated arc therapy (RapidArc) vs. conventional fixed-field intensity-modulated radiotherapy for {sup 18}F-FDG-PET-guided dose escalation in oropharyngeal cancer: A planning study

    SciTech Connect (OSTI)

    Teoh, May, E-mail: m.teoh@nhs.net [Department of Oncology, St. Luke's Cancer Centre, Royal Surrey County Hospital, Guildford, Surrey (United Kingdom); Beveridge, Sabeena [Department of Medical Physics, St. Luke's Cancer Centre, Royal Surrey County Hospital, Guildford, Surrey (United Kingdom); Wood, Katie; Whitaker, Stephen [Department of Oncology, St. Luke's Cancer Centre, Royal Surrey County Hospital, Guildford, Surrey (United Kingdom); Adams, Elizabeth; Rickard, Donna; Jordan, Tom; Nisbet, Andrew [Department of Medical Physics, St. Luke's Cancer Centre, Royal Surrey County Hospital, Guildford, Surrey (United Kingdom); Clark, Catharine H. [Department of Medical Physics, St. Luke's Cancer Centre, Royal Surrey County Hospital, Guildford, Surrey (United Kingdom); National Physical Laboratory, Hampton Road, Teddington, Middlesex (United Kingdom)

    2013-04-01T23:59:59.000Z

    Fluorine-18-fluorodeoxyglucose-positron emission tomography ({sup 18}F-FDG-PET)–guided focal dose escalation in oropharyngeal cancer may potentially improve local control. We evaluated the feasibility of this approach using volumetric-modulated arc therapy (RapidArc) and compared these plans with fixed-field intensity-modulated radiotherapy (IMRT) focal dose escalation plans. Materials and methods: An initial study of 20 patients compared RapidArc with fixed-field IMRT using standard dose prescriptions. From this cohort, 10 were included in a dose escalation planning study. Dose escalation was applied to {sup 18}F-FDG-PET–positive regions in the primary tumor at dose levels of 5% (DL1), 10% (DL2), and 15% (DL3) above standard radical dose (65 Gy in 30 fractions). Fixed-field IMRT and double-arc RapidArc plans were generated for each dataset. Dose-volume histograms were used for plan evaluation and comparison. The Paddick conformity index (CI{sub Paddick}) and monitor units (MU) for each plan were recorded and compared. Both IMRT and RapidArc produced clinically acceptable plans and achieved planning objectives for target volumes. Dose conformity was significantly better in the RapidArc plans, with lower CI{sub Paddick} scores in both primary (PTV1) and elective (PTV2) planning target volumes (largest difference in PTV1 at DL3; 0.81 ± 0.03 [RapidArc] vs. 0.77 ± 0.07 [IMRT], p = 0.04). Maximum dose constraints for spinal cord and brainstem were not exceeded in both RapidArc and IMRT plans, but mean doses were higher with RapidArc (by 2.7 ± 1 Gy for spinal cord and 1.9 ± 1 Gy for brainstem). Contralateral parotid mean dose was lower with RapidArc, which was statistically significant at DL1 (29.0 vs. 29.9 Gy, p = 0.01) and DL2 (29.3 vs. 30.3 Gy, p = 0.03). MU were reduced by 39.8–49.2% with RapidArc (largest difference at DL3, 641 ± 94 vs. 1261 ± 118, p < 0.01). {sup 18}F-FDG-PET–guided focal dose escalation in oropharyngeal cancer is feasible with RapidArc. Compared with conventional fixed-field IMRT, RapidArc can achieve better dose conformity, improve contralateral parotid sparing, and uses fewer MU.

  10. United States Department of

    E-Print Network [OSTI]

    Standiford, Richard B.

    that are housed at the Forest Service combustion labo- ratories are fixed in the buildings and cannot be tilted particles to field-scale tests.12 Laboratory tests using constructed fuel beds have com- monly been used A fixed position wind tunnel with a mov- USDA Forest Ser

  11. Mixed quantum/classical theory for inelastic scattering of asymmetric-top-rotor + atom in the body-fixed reference frame and application to the H{sub 2}O + He system

    SciTech Connect (OSTI)

    Semenov, Alexander [Chemistry Department, Wehr Chemistry Building, Marquette University, Milwaukee, Wisconsin 53201-1881 (United States); PSL Research University, Observatoire de Paris, Sorbonne Universités, UPMC Univ Paris 06, ENS, UCP, CNRS, UMR8112, LERMA, 5 Place Janssen, 92195 Meudon (France); Dubernet, Marie-Lise [PSL Research University, Observatoire de Paris, Sorbonne Universités, UPMC Univ Paris 06, ENS, UCP, CNRS, UMR8112, LERMA, 5 Place Janssen, 92195 Meudon (France); Babikov, Dmitri, E-mail: dmitri.babikov@mu.edu [Chemistry Department, Wehr Chemistry Building, Marquette University, Milwaukee, Wisconsin 53201-1881 (United States)

    2014-09-21T23:59:59.000Z

    The mixed quantum/classical theory (MQCT) for inelastic molecule-atom scattering developed recently [A. Semenov and D. Babikov, J. Chem. Phys. 139, 174108 (2013)] is extended to treat a general case of an asymmetric-top-rotor molecule in the body-fixed reference frame. This complements a similar theory formulated in the space-fixed reference-frame [M. Ivanov, M.-L. Dubernet, and D. Babikov, J. Chem. Phys. 140, 134301 (2014)]. Here, the goal was to develop an approximate computationally affordable treatment of the rotationally inelastic scattering and apply it to H{sub 2}O + He. We found that MQCT is somewhat less accurate at lower scattering energies. For example, below E = 1000 cm{sup ?1} the typical errors in the values of inelastic scattering cross sections are on the order of 10%. However, at higher scattering energies MQCT method appears to be rather accurate. Thus, at scattering energies above 2000 cm{sup ?1} the errors are consistently in the range of 1%–2%, which is basically our convergence criterion with respect to the number of trajectories. At these conditions our MQCT method remains computationally affordable. We found that computational cost of the fully-coupled MQCT calculations scales as n{sup 2}, where n is the number of channels. This is more favorable than the full-quantum inelastic scattering calculations that scale as n{sup 3}. Our conclusion is that for complex systems (heavy collision partners with many internal states) and at higher scattering energies MQCT may offer significant computational advantages.

  12. Fixed-Parameter Tractability and Completeness III

    E-Print Network [OSTI]

    Downey, Rod

    , and by the University of Victoria and Simon Fraser University during a visit to British Columbia in August, 1991 Downey Mathematics Department Victoria University Wellington, New Zealand Michael Fellows Computer Science Department University of Victoria Victoria, B.C. Canada July 7, 2010 Abstract We analyse basic

  13. Instruction Guide Fixing a Rejected Requisition

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    if submitted within the last 90 days--if you do not see any use the Search Terms menu on the left to expand the search by clicking the Date Range dropdown and selecting a date range. Note: Make sure review your eFields entered did not pass combination edit validation. b. Budget validation failed. c. Make sure you read

  14. Essential and Fixed Oils of Kansas Plants

    E-Print Network [OSTI]

    Wellington, Earl J.

    1908-01-01T23:59:59.000Z

    of Kansas", published in Topeka, 1892, was used. This is the most complete catalog of Kansas plants available at the present time. The numbers to the Left of the botanical names refer to those of this check list . A new flora of the state has been...

  15. Sequential conditions for fixed and periodic points 

    E-Print Network [OSTI]

    Peters, Burnis Charles

    1970-01-01T23:59:59.000Z

    : If f is a nonexpansive selfmap of (X, d) and for some x in X, lim f i(x ) = u, then the sequence (fm(u)) is n o ' i 0 isometric. We now consider mappings which satisfy the weaker conditions (S7) and (SS). Theorems 6 through 10 are due to Bailey [I...) and f (x) such that d(f (x), f (x)) & s. Assume m & n. Then, m n 10 d(f ' (x), f (x)) & s. Sy Theorem 9, f (x) and f n ' xrl-(m-n) (x) are proximal under f; therefore, by Theorem 7, there is a point u in X such that fm (u) = u. If u and v...

  16. Process for fixed bed coal gasification

    DOE Patents [OSTI]

    Sadowski, Richard S. (Greenville, SC)

    1992-01-01T23:59:59.000Z

    The combustion of gas produced from the combination of coal pyrolysis and gasification involves combining a combustible gas coal and an oxidant in a pyrolysis chamber and heating the components to a temperature of at least 1600.degree. F. The products of coal pyrolysis are dispersed from the pyrolyzer directly into the high temperature gasification region of a pressure vessel. Steam and air needed for gasification are introduced in the pressure vessel and the materials exiting the pyrolyzer flow down through the pressure vessel by gravity with sufficient residence time to allow any carbon to form carbon monoxide. Gas produced from these reactions are then released from the pressure vessel and ash is disposed of.

  17. The Fix Issue 13/14

    E-Print Network [OSTI]

    Multiple Contributors

    1995-01-01T23:59:59.000Z

    ?" "Starsky. everybody already knows tht. I was trying to come up with a way to tell people how I feel about you - " "They do?" 'Then I guess we don 't have to tell anybody anything. " - M Ollica Rose Kiesel 1 And Be My ??? H "Nope." "Nope. " "Lucky... probably reach it a lot better than you," ??It's the tree topper, what does it look li ke?" Starsky cradled the la rge ornament in his hand. "Be careful now, don't break it. That sucker wasn'l cheap." 2 Staring at the bright red and white, glitter...

  18. Fixed point theorems in ultrametric spaces

    E-Print Network [OSTI]

    Fullbright, Steven Edward

    1972-01-01T23:59:59.000Z

    : r ? s & d(x, y ) & r) contains all but a finite number n n of the y, and the set S(p, r ? c) contains all but a finite number of the y . Therefore, T QS(p, r ? c) is an infinite set, nk and for every y c T Q S(p, r ? c), we have d(x, p) & max (d(x..., y ), d(y, p) ), and so d(x, p) = d(x, y ) by Lemma 1. 4. This contradicts the fact that d(x, y ) is not constant, and hence, sup S & r. n Similarly, inf B & r ~ For every r c R(x) (0), there is an c & 0 such that (r ? c, r + t) P (R(x) (r...

  19. FIXED POINT SPACES, PRIMITIVE CHARACTER DEGREES

    E-Print Network [OSTI]

    Meierfrankenfeld, Ulrich

    is nonprincipal and irreducible and (jGj;jV j) = 1, then 1 jGj X gPG dimCV (g) 1 2 dimV: It seems reasonable for arbitrary groups G and nonprincipal irreducible modules V : 1 jGj X gPG dimCV (g) 3 4 dimV: As a consequence #12;nite group, and assume that CV (G) = 0. Then 1 jGj X gPG dimCV (g) p + 1 2p dimV ; where p

  20. AGS fixed target program with nuclear beams

    SciTech Connect (OSTI)

    Foley, K.J.

    1984-01-01T23:59:59.000Z

    The recent approval of the beam transfer line from the Tandem Van de Graaf to the AGS signals the advent of a new era of Nuclear and Particle Physics at BNL. High Energy nuclear beams are expected to be available for experiments in 1986. I will discuss the direct link between the Tandems and the AGS. Two other proposed projects, the Relativistic Heavy Ion Collider and the Synchrotron Booster, are discussed in another presentation to this conference.

  1. Fixed point theorems in ultrametric spaces 

    E-Print Network [OSTI]

    Fullbright, Steven Edward

    1972-01-01T23:59:59.000Z

    ) . The condition is related to the range of the metric d. The following notations will be employed in the sequel: the empty set; R, the set of real numbers; the set of rational numbers; N, the set of positive integers. The citations on this and the following... ) is an ultrametric space. We shall henceforth p p denote this space by Q p We show that Q is not a complete space. Let q c Q . Then P P n the sequence (q + p ) converges to q, and therefore Q (q) P is not closed. Since Q (q) is not closed, the set (q} is not P...

  2. Fixing Embryos Johnston Lab, November 2003

    E-Print Network [OSTI]

    Johnston, Laura

    to collect the excess liquid. Use the squirt bottle with embryo wash to wash embryos from grape plates onto (in squirt bottle), swirling basket gently in the bleach until dorsal appendages have dissolved (about, carefully remove mesh with embryos on it from basket, put into screw-cap glass vial with 5 ml heptane in it

  3. CONVERGENCE OF FIXED-POINT CONTINUATION ALGORITHMS ...

    E-Print Network [OSTI]

    2010-12-29T23:59:59.000Z

    Jun 18, 2009 ... As this problem is NP-hard in general, its convex relaxation, the nuclear norm mini- mization problem, is often solved instead. Recently, Ma ...

  4. Simple fix opens long-blocked fishway

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

    than doubled. Cost of the project: around 2,500. "Frustration removed," says Colville fish biologist Chris Fisher. Okanagan sockeye production has exploded since managers started...

  5. Company Template (Fixed Support) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsNovember 13, 2014 BuildingEnergy EfficiencyPast ProjectsCommunityCompany Template

  6. Protection Programming Defensive Planning for Fixed Facilities

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 |of EnergySelectedof EnergyNOT MEASUREMENT

  7. SF 6432-LA Fixed Price Latin America

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs RunningSEAB ReportsFESF 6432-LALA

  8. SF 6432-LA Fixed Price Latin America

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs RunningSEAB ReportsFESF

  9. Feasibility Study of Solar Photovoltaics on Landfills in Puerto Rico (Second Study)

    SciTech Connect (OSTI)

    Salasovich, J.; Mosey, G.

    2011-08-01T23:59:59.000Z

    This report presents the results of an assessment of the technical and economic feasibility of deploying a solar photovoltaics (PV) system on landfill sites in Puerto Rico. The purpose of this report is to assess the landfills with the highest potential for possible solar PV installation and estimate cost, performance, and site impacts of three different PV options: crystalline silicon (fixed tilt), crystalline silicon (single-axis tracking), and thin film (fixed tilt). The report outlines financing options that could assist in the implementation of a system. According to the site production calculations, the most cost-effective system in terms of return on investment is the thin-film fixed-tilt technology. The report recommends financing options that could assist in the implementation of such a system. The landfills and sites considered in this report were all determined feasible areas in which to implement solar PV systems.

  10. A Phase I/II Trial of Intensity Modulated Radiation (IMRT) Dose Escalation With Concurrent Fixed-dose Rate Gemcitabine (FDR-G) in Patients With Unresectable Pancreatic Cancer

    SciTech Connect (OSTI)

    Ben-Josef, Edgar, E-mail: edgar.ben-josef@uphs.upenn.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Schipper, Mathew [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Francis, Isaac R. [Department of Radiology, University of Michigan, Ann Arbor, Michigan (United States)] [Department of Radiology, University of Michigan, Ann Arbor, Michigan (United States); Hadley, Scott; Ten-Haken, Randall; Lawrence, Theodore; Normolle, Daniel [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Simeone, Diane M.; Sonnenday, Christopher [Department of Surgery, University of Michigan, Ann Arbor, Michigan (United States)] [Department of Surgery, University of Michigan, Ann Arbor, Michigan (United States); Abrams, Ross [Department of Radiation Oncology, Rush Medical Center, Chicago, Illinois (United States)] [Department of Radiation Oncology, Rush Medical Center, Chicago, Illinois (United States); Leslie, William [Division of Hematology Oncology, Department of Internal Medicine, Rush Medical Center, Chicago, Illinois (United States)] [Division of Hematology Oncology, Department of Internal Medicine, Rush Medical Center, Chicago, Illinois (United States); Khan, Gazala; Zalupski, Mark M. [Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan (United States)] [Division of Hematology Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan (United States)

    2012-12-01T23:59:59.000Z

    Purpose: Local failure in unresectable pancreatic cancer may contribute to death. We hypothesized that intensification of local therapy would improve local control and survival. The objectives were to determine the maximum tolerated radiation dose delivered by intensity modulated radiation with fixed-dose rate gemcitabine (FDR-G), freedom from local progression (FFLP), and overall survival (OS). Methods and Materials: Eligibility included pathologic confirmation of adenocarcinoma, radiographically unresectable, performance status of 0-2, absolute neutrophil count of {>=}1500/mm{sup 3}, platelets {>=}100,000/mm{sup 3}, creatinine <2 mg/dL, bilirubin <3 mg/dL, and alanine aminotransferase/aspartate aminotransferase {<=}2.5 Multiplication-Sign upper limit of normal. FDR-G (1000 mg/m{sup 2}/100 min intravenously) was given on days -22 and -15, 1, 8, 22, and 29. Intensity modulated radiation started on day 1. Dose levels were escalated from 50-60 Gy in 25 fractions. Dose-limiting toxicity was defined as gastrointestinal toxicity grade (G) {>=}3, neutropenic fever, or deterioration in performance status to {>=}3 between day 1 and 126. Dose level was assigned using TITE-CRM (Time-to-Event Continual Reassessment Method) with the target dose-limiting toxicity (DLT) rate set to 0.25. Results: Fifty patients were accrued. DLTs were observed in 11 patients: G3/4 anorexia, nausea, vomiting, and/or dehydration (7); duodenal bleed (3); duodenal perforation (1). The recommended dose is 55 Gy, producing a probability of DLT of 0.24. The 2-year FFLP is 59% (95% confidence interval [CI]: 32-79). Median and 2-year overall survival are 14.8 months (95% CI: 12.6-22.2) and 30% (95% CI 17-45). Twelve patients underwent resection (10 R0, 2 R1) and survived a median of 32 months. Conclusions: High-dose radiation therapy with concurrent FDR-G can be delivered safely. The encouraging efficacy data suggest that outcome may be improved in unresectable patients through intensification of local therapy.

  11. Introduction For millennia people have known about the sun's energy potential, using it in passive

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    oriented panel. It makes intuitive sense, therefore, that we should try to have solar panels perpendicular In a perfect solar energy world, one without weather, the ideal tilt for a fixed solar panel is equal to generate solar electricity in Williamstown. Thus, for optimal productivity, the panels should be flatter

  12. The Photovoltaic Crisis and the Demand-side Generation in Spain

    E-Print Network [OSTI]

    Mir-Artigues, Pere

    2013-03-01T23:59:59.000Z

    The RES-E promotion policy in Spain gave priority to the photovoltaic (henceforth, PV) ground-mounted installations. For years, the coupling of customer-side generation coupled with excess energy exports was never specifically considered. However...

  13. --No Title--

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

    action would involve the installation of a 5-6 kW ground mounted monopole design photovoltaic system adjacent to the security kiosk within the road shoulder at the west entrance...

  14. CX-004658: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Large Scale Solar - Ground Mounted - Ram ManufacturingCX(s) Applied: B5.1Date: 12/02/2010Location(s): Saint George, UtahOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  15. Energy Efficiency and Conservation Block Grant Program

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

    of a 10.56 kW ground-mounted solar photovoltaic at the City of Bowie Radio & TV Museum (Harmel House); 10) installation of a 3.84 kW roof-mounted solar photovoltaic at the...

  16. Model As-of Right Zoning Ordinance or Bylaw: Allowing Use of Large-Scale Solar Energy Facilities

    Broader source: Energy.gov [DOE]

    Note: This model ordinance was designed to provide guidance to local governments seeking to develop siting rules for large-scale, ground-mounted solar (250 kW and above). While it was developed as...

  17. CX-004542: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Ground Mount Photovoltaic Installations at City of Albuquerque Fire AcademyCX(s) Applied: B5.1Date: 11/24/2010Location(s): Albuquerque, New MexicoOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  18. The long time behavior of Brownian motion in tilted periodic potentials

    E-Print Network [OSTI]

    Liang Cheng

    2015-01-20T23:59:59.000Z

    Jan 6, 2015 ... In order to obtain more quantitative information about dynamical behaviors, we .... 2. Convergence of long time average velocity VF for the ...

  19. Tilting at windmills: the worldly conditions of authorship and textual criticism

    E-Print Network [OSTI]

    Creamer, Maureen Louise

    1990-01-01T23:59:59.000Z

    pure sense, of composite author- ship . . . often guided or directed or controlled by other people while the author is in the process of trying to make it take shape, as it is throughout its textual history" (Thorpe 30). Although it is not clear... and the "initiating mind" of literature hinges upon the idea that every stage of the development of literature ? from inkling, to idea, to sentence, to manuscript ? occurs entirely protected from the influence of other people. McGann merely hints at the social...

  20. SMIA Geneva September 2005 "Towards the Eco-design of a tilting train in Korea

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Life Cycle System Bastien Ecabert, Martyn Wakeman, Jan-Anders Manson, Laboratoire de Technologie des

  1. Memory of the Unjamming Transition during Cyclic Tiltings of a Granular Pile

    E-Print Network [OSTI]

    Stephanie Deboeuf; Olivier Dauchot; Lydie Staron; Anne Mangeney; Jean-Pierre Vilotte

    2005-09-23T23:59:59.000Z

    Discrete numerical simulations are performed to study the evolution of the micro-structure and the response of a granular packing during successive loading-unloading cycles, consisting of quasi-static rotations in the gravity field between opposite inclination angles. We show that internal variables, e.g., stress and fabric of the pile, exhibit hysteresis during these cycles due to the exploration of different metastable configurations. Interestingly, the hysteretic behaviour of the pile strongly depends on the maximal inclination of the cycles, giving evidence of the irreversible modifications of the pile state occurring close to the unjamming transition. More specifically, we show that for cycles with maximal inclination larger than the repose angle, the weak contact network carries the memory of the unjamming transition. These results demonstrate the relevance of a two-phases description -strong and weak contact networks- for a granular system, as soon as it has approached the unjamming transition.

  2. STEADY NATURAL CONVECTION IN A TILTED LONG CYLINDRICAL ENVELOPE WITH LATERAL ADIABATIC

    E-Print Network [OSTI]

    Zhao, Tianshou

    authors are [13, 14]. In [13], the fluid flow in a horizontal tube with two ends at different temperatures the flow pattern in a practical tube because of the large temperature dif- ference between the cold length=diameter ratio is 9. This is supposed to be a simplified model for the pulse tube in a pulse-tube

  3. To Tilt Your Head or Not To: Potentially Bijoy K. Ghosh and Indika Wijayasinghe

    E-Print Network [OSTI]

    Ghosh, Bijoy K.

    heading directions, as a simple mechanical control system. Head movements obey Donders' constraint (as Systems, Texas Tech University, Lubbock, Texas, USA indika.wijayasinghe@ttu.edu the control of eye treatment of the topic in the framework of modern control theory and geometric mechanics. Assuming the eye

  4. Human perception and control of vehicle roll tilt in hyper-gravity

    E-Print Network [OSTI]

    Clark, Torin Kristofer

    2013-01-01T23:59:59.000Z

    Pilots and astronauts experience a range of altered gravity environments in which they must maintain accurate perception and control of vehicle orientation for tasks such as landing and docking. To study sensorimotor ...

  5. automated sequential tilt-series: Topics by E-print Network

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

    Sciences Websites Summary: Sequential Consistency for Heterogeneous-Race-Free DEREK R. HOWER, BRADFORD M. BECKMANN, BENEDICT R: Sequential Consistency for Data-Race-Free (SC for...

  6. The tilted trajectory of public art : New York City, 1979 - 2005

    E-Print Network [OSTI]

    Earl, Samantha C

    2011-01-01T23:59:59.000Z

    This thesis explores the relationship between urban planning and public art, and questions the efficacy of past and current models, whilst pushing us to develop new ones. It strives to glean the most salient issues universal ...

  7. active tilting-pad journal: Topics by E-print Network

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

    and Ecology Websites Summary: , Journal of Aging and Physical Activity8 9 April, 201110 11 12 13 Richard A. Dunn, W. Douglass Shaw Mouton, 2003) and the role of weather on...

  8. Emergent and reentrant fractional quantum Hall effect in trilayer systems in a tilted magnetic field

    E-Print Network [OSTI]

    Gusev, Guennady

    field G. M. Gusev,1 S. Wiedmann,2,3 O. E. Raichev,4 A. K. Bakarov,5 and J. C. Portal2,3,6 1Instituto de Physics, Novosibirsk 630090, Russia 6 Institut Universitaire de France, 75005 Paris, France Received 28

  9. Tilting at Modern: Elizabeth Gordon's "The Threat to the Next America"

    E-Print Network [OSTI]

    Corbett, Kathleen LaMoine

    2010-01-01T23:59:59.000Z

    philosophy Gordon, ?The Threat to the Next America,?129.Advertisement for “The Threat to the Next America,” Business121. Figure 27. “The Threat to the Next America” carried a

  10. Solar: monthly latitude tilt GIS data at 40km resolution for...

    Open Energy Info (EERE)

    potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south...

  11. 'Tilted' Industrial Electric Rates: A New Negative Variable for Energy Engineers 

    E-Print Network [OSTI]

    Greenwood, R. W.

    1981-01-01T23:59:59.000Z

    The cost of purchased electricity for industry is rising even faster than for other sectors. Conventional means of reducing power costs include internal techniques like load management, demand controls and energy conservation. External mechanisms...

  12. Seismic evidence for a tilted mantle plume and north^south mantle ow beneath Iceland

    E-Print Network [OSTI]

    Shen, Yang

    , or hotspots, are maintained by long-lived upwelling of warm material from the lower mantle through narrow; accepted 25 January 2002 Abstract Shear waves converted from compressional waves at mantle discontinuities

  13. Analysis of flexure pivot tilting pad gas bearings with different damper configurations

    E-Print Network [OSTI]

    Rimpel, Aaron Michael

    2009-05-15T23:59:59.000Z

    blowers, turbo compressors, micro-gas turbines, auxiliary power units, etc., that have uses for automotive, aerospace, and fuel cell industries, to name a few [1-4]. Oil-free lubrication is cleaner (i.e. less pollution; more environment-friendly), more...

  14. Hole-mask colloidal nanolithography combined with tilted-angle-rotation evaporation: A versatile method

    E-Print Network [OSTI]

    Braun, Paul

    ]. In hybrid solar cells and organic light emitting diodes, plasmonic nanostructures enhanced the efficiency, University of Illinois at Urbana Champaign, 312E MSEB, MC-246, 1304 W. Green Street, Urbana, Illinois 61801 to concentrate light on subwavelength scales has led to a plethora of fundamental investigations. Initially

  15. PHYSICAL REVIEW B 85, 184101 (2012) Octahedral tilting in strained LaVO3 thin films

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2012-01-01T23:59:59.000Z

    -Zentrum Berlin f¨ur Materialien und Energie GmbH, BESSY, Albert-Einstein-Strasse 15, 12489 Berlin, Germany rotations in a LaVO3 thin film is investigated using synchrotron radiation. First, we find that the film

  16. Revisiting Hydrophobic Mismatch with Free Energy Simulation Studies of Transmembrane Helix Tilt and Rotation

    E-Print Network [OSTI]

    Kim, Taehoon; Im, Wonpil

    2010-07-01T23:59:59.000Z

    Protein-lipid interaction and bilayer regulation of membrane protein functions are largely controlled by the hydrophobic match between the transmembrane (TM) domain of membrane proteins and the surrounding lipid bilayer. To systematically...

  17. Tilting the mirror : packaging "Spanish" architecture in late nineteenth century California

    E-Print Network [OSTI]

    Díaz-Borioli, Leonardo, 1974-

    2003-01-01T23:59:59.000Z

    In 1893 at Chicago's World Columbian Exposition, California devoted a great deal of resources to its promotion through a pavilion that spelled out a construct about California's "Spanish" past. This supposed history got ...

  18. Tilting Modules for the Current Algebra Associated to a Simple Lie Algebra

    E-Print Network [OSTI]

    Bennett, Matthew Lyle

    2012-01-01T23:59:59.000Z

    reciprocity for the current algebras, arXiv:1106.0347. [5]cells of quantum affine algebras, Duke Math. J. 123 (2004),2, 335-402. [8] N. Bourbaki, Algebra I, Ch. II, 2 nd ed. ,

  19. A tilt rotor UAV for long endurance operations in remote environments

    E-Print Network [OSTI]

    VanderMey, Josiah T

    2011-01-01T23:59:59.000Z

    Extended mission times will greatly expand the utility of small UAVs that are currently limited to a single flight lasting no more than a few hours. This thesis assesses the challenges to developing a small, long endurance ...

  20. Tilting Modules for the Current Algebra Associated to a Simple Lie Algebra

    E-Print Network [OSTI]

    Bennett, Matthew Lyle

    2012-01-01T23:59:59.000Z

    +1 , in preparation. [3] M. Bennett, V. Chari, R. Dolbin and34 (2011), 1–18. [4] M. Bennett, V. Chari, and N. ManningarXiv:1106.0347. [5] M. Bennett, V. Chari, J. Greenstein and

  1. Panel designs and tilting equipment for tiltup concrete construction of farm structures

    E-Print Network [OSTI]

    Giesecke, Raymond Clayton

    1955-01-01T23:59:59.000Z

    atxibetcd err apy17ta~ 75 @or o. at ot tho b"co tM t5 lcm' cccIt at tM tope ?ho vcrtteA. c ~nto dao to ntrd tJcaa and ~~cotta~ acos cad d d xo:da aro faced h7 tthhg tbo aa==tQn of ca nto aboet tho boca of c=ch a&i "w=aMoa of;~to ahoj"t V 0 1 530 (6...

  2. 'Tilted' Industrial Electric Rates: A New Negative Variable for Energy Engineers

    E-Print Network [OSTI]

    Greenwood, R. W.

    1981-01-01T23:59:59.000Z

    policies on the use of coal and nuclear power. As a result, electricity began taking larger chunks out of household budgets and industry's operating costs -- even though in real, inflation adjusted dollars it barely increased at all. Residential...

  3. Tilting at Modern: Elizabeth Gordon's "The Threat to the Next America"

    E-Print Network [OSTI]

    Corbett, Kathleen LaMoine

    2010-01-01T23:59:59.000Z

    an example of a house that used passive solar heating, andbest houses of the future,? primary among them passive solarHouse I Would Like to Live In After the War,? 31. encouraged passive

  4. Mapping misorientation and crystallographic tilt in GaN layers via polychromatic microdiffraction

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    coefficients between GaN and the substrate. Understandingpenetrate both the GaN layer and the substrate. Two samplespattern from the GaN layer and the substrate on a charge-

  5. Microsoft Word - Tilted-Rig-TP-Definition-Version1-Aug-14-2012A...

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

    Case 110 is chosen as the source for the present test problem as the fluids have low surface tension (unlike Case 115) due the addition of a surfactant, the asymmetry small...

  6. K'-Theory of a Cohen-Macaulay Local Ring with n-Cluster Tilting Object

    E-Print Network [OSTI]

    Navkal, Viraj

    2013-01-01T23:59:59.000Z

    K-Theory of Additive and ExactK-Theory of CMLocalization for the K-theory of noncommutative rings. ” AMS

  7. File:NREL-afg-10km-tilt.pdf | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to: navigation,SizeEthiopiametstak.pdfMFSA06-2012Afghanistan - Annual

  8. File:NREL-bhutan-10kmsolar-tilt.pdf | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to:ar-80m.pdf Jump to: navigation, search File Filedni.pdf

  9. Microsoft Word - Tilted-Rig-TP-Definition-Version1-Aug-14-2012A.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE625 FINALOptimization ofIDM UID:9,5NAD + andTest

  10. Chassis stabilization system

    DOE Patents [OSTI]

    Claxton, Gerald L. (Fresno, CA)

    1999-01-01T23:59:59.000Z

    A stabilizing suspension system is provided for vehicles carrying telescopic booms or aerial work platforms having a fixed axle and a oscillating axle. Hydraulic cylinders are connected to each end of the oscillating axle, each cylinder being capable of extending and retracting. An off level sensor senses the angle of tilt of the chassis in both left and right directions and, when a predetermined threshold of tilt has been detected, the hydraulic cylinder on the downhill side of the chassis is locked against retracting, but is free to move in the downhill direction to allow the downhill wheel to remain in contact with the ground.

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

    E-Print Network [OSTI]

    2011-03-04T23:59:59.000Z

    of-sight and operating in licensed frequency bands. The rapid and ... operate link uv ? E at bandwidth bw ... The joint chance constraint (1) is now equiv-.

  12. Experiments in Fixed-Wing UAV Perching and Russ Tedrake

    E-Print Network [OSTI]

    Tedrake, Russ

    and Artificial Intelligence Lab, Cambridge, MA, 02139, USA High-precision maneuvers at high angles-of-attack are not properly addressed by even the most advanced aircraft control systems. Here we present our control design penalty matrix Subscript i Variable number L Lift D Drag Superscript d Desired value Optimal (as in or J

  13. LOT SIZING WITH INVENTORY BOUNDS AND FIXED COSTS ...

    E-Print Network [OSTI]

    2004-09-15T23:59:59.000Z

    The block definition leads to a characterization of the extreme points of Q and a polynomial dynamic programming algorithm (Love, 1973) for LSBI, which can be

  14. Biological and physical regulation of the oceanic fixed nitrogen reservoir

    E-Print Network [OSTI]

    Weber, Thomas Smith

    2013-01-01T23:59:59.000Z

    biomass N:P varies as a function of Fe availability (Priceet al 2006, Price 2005). As a result, the biomass N:P ratio

  15. A fix-and-relax heuristic for controlled tabular adjustment

    E-Print Network [OSTI]

    2013-07-25T23:59:59.000Z

    Jul 25, 2013 ... aDept. of Statistics and Operations Research, Universitat Polit`ecnica ... between 51–55 in town t2, then any external attacker would know the ...

  16. A Parallel Local Search Framework for the Fixed-Charge ...

    E-Print Network [OSTI]

    2014-06-15T23:59:59.000Z

    Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta GA 30332. David A. ... modern platforms and the effectiveness of MIP solvers in solving small problems instances. .... (2006), special emphasis is put on the control of.

  17. Treatment of Mixed Wastes via Fixed Bed Gasification

    SciTech Connect (OSTI)

    None

    1998-10-28T23:59:59.000Z

    This report outlines the details of research performed under USDOE Cooperative Agreement DE-FC21-96MC33258 to evaluate the ChemChar hazardous waste system for the destruction of mixed wastes, defined as those that contain both RCRA-regulated haz- ardous constituents and radionuclides. The ChemChar gasification system uses a granular carbonaceous char matrix to immobilize wastes and feed them into the gasifier. In the gasifier wastes are subjected to high temperature reducing conditions, which destroy the organic constituents and immobilize radionuclides on the regenerated char. Only about 10 percent of the char is consumed on each pass through the gasifier, and the regenerated char can be used to treat additional wastes. When tested on a 4-inch diameter scale with a continuous feed unit as part of this research, the ChemChar gasification system was found to be effective in destroying RCRA surrogate organic wastes (chlorobenzene, dichloroben- zene, and napht.halene) while retaining on the char RCRA heavy metals (chromium, nickel, lead, and cadmium) as well as a fission product surrogate (cesium) and a plutonium surrogate (cerium). No generation of harmful byproducts was observed. This report describes the design and testing of the ChemChar gasification system and gives the operating procedures to be followed in using the system safely and effectively for mixed waste treatment.

  18. Accounting methods for recognition of fixed asset underdepreciation

    E-Print Network [OSTI]

    Hidell, Richard Robinson

    1948-01-01T23:59:59.000Z

    ? can bo ob3ectivv3-. notA&d and t1xe?rice of the &&roduct, o&&)usted accordtng3y& but, also by antici1&atcd 1&igher ra?lace- lilt costa of assets &s&ich are v&carin&", out ox' becoainp, obso3ste and . '&ust be rc;&laced no&x or scrutiny in the uture... continuity of business &3vnands that such a condition bs recognised and provided for in ono ~m&cr ox a?ot?er, Xn a u&re i&a&ed]. ate sonco~ the 1&robls&z of accuracy of incone detox. &ination arises. &&& Large profits reported by ooroorations ha?e bosn...

  19. A Of MOIVRE FORMULA FOR FIXED POINT THEORY Daniel Henry ...

    E-Print Network [OSTI]

    In this lecture I will propose a formula relating the index of vectorfield which, like De Moivre ' s formula, contains a large amount of information. Let M be a smooth

  20. Laws restricting price-fixing and their enforcements

    E-Print Network [OSTI]

    Johnston, Lon Don

    1962-01-01T23:59:59.000Z

    @ coupscicoxsg 'i. si, -boggioncsl pxtoa' g~nb. - . . kiss invoicing y~~. such ss csasls-'pciss. esgntbnnnos, bn's~ porc ~stsss& yyxoe di'socts@nstion sad ocbsv suob cs3. aced sgsss MU -noc, , bs csksQ i~neo oonscAEzs'Hcs4;"%hR ~ 86con8 'szss''she's this..., %Ajax'h . 18 ~ . . '". ; I';. ;;. . . -;;, :; scxf&cs'4. , ce, %&i:e:. Cbi jL'ob4ejs;sk. yi4eii~gfisA~. :keg''i&jckbn Aqua aafci~ . -:;. -', ":siI'iX'-'bs sssncns4 on, tb's, -gedsijal la+4'skoss. -' Scsca:;inc%tenet:Xsgc'stsckos . '. ', ~: I . snk...

  1. Accounting methods for recognition of fixed asset underdepreciation 

    E-Print Network [OSTI]

    Hidell, Richard Robinson

    1948-01-01T23:59:59.000Z

    and rop~t, . ac crob3?n of a rishi?g "cost of livLnp" is not, co&xfincd to t&&e ind&i?i&h&al?1? t is al'o t1&c ?ara:&oust consiWration of business tod&t1. 0 incu trial conccxns it ia cK, da&ctx- not only by incrsas'1ng "&aterial and 3;&bor co ts, ?Mc...?ss of Qcti'3n ?Jhicll will enable tho ~ant nost efficiently to perfom thc tasks ossiAned to hin ~ &1 i-n&xxvlcdgo of t!. o xc&ont, of tho postwar incxv ocec in costs 1&ill !&ox~ in undcrst?ldtni ti&e serio Jensen of lQBGPO-&ont 58 Dl'ob3AK&8 of. dopn ci...

  2. Combination of Fixed and Mobile Cameras for Automatic Pedestrian Detection

    E-Print Network [OSTI]

    Bierlaire, Michel

    in the shape, pose, color distribution, and behavior affect the robustness of the detection process. A novel the rest is dark. Nonetheless, since FIR images depend on the temperature of the objects, an outdoor scene has a number of factors that affect the images. Strong sun heating can introduce texture due

  3. Fixing famine : the politics of information in famine early warning

    E-Print Network [OSTI]

    Burg, Suzanne M. M.

    2008-01-01T23:59:59.000Z

    and Preparedness Commission Early Warning System. (1998).Ethiopia Early Warning System May/June monthly report. AddisPreparedness Commission Early Warning System. (2004, March).

  4. Memorandum, Managed Phase Out of Halon Fixed Fire Suppression...

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

    the management of the reduction and potential elimination of Halon fire extinguishing systems within the Department of Energy (DOE). This memorandum supplements the joint Office...

  5. M28 Fixed wing transport aircraft cost reduction

    E-Print Network [OSTI]

    Xia, YuXin, M.B.A. Sloan School of Management

    2011-01-01T23:59:59.000Z

    The M28 is a Polish short-takeoff-and-landing (STOL) light cargo aircraft developed in 1984 and currently built by PZL Mielec, a subsidiary of United Technology Corporation (UTC). There has been renewed interest in the ...

  6. Biological and physical regulation of the oceanic fixed nitrogen reservoir

    E-Print Network [OSTI]

    Weber, Thomas Smith

    2013-01-01T23:59:59.000Z

    2 in the subtropical North Pacific Ocean. Nature 412: 635-38in the eastern tropical Pacific Ocean. Marine Chemistry 16:and N 2 fixation in the Pacific Ocean. Global Biogeochemical

  7. [24]. FFAG (fixed-field alternating-gradient) [5] -

    E-Print Network [OSTI]

    to the nonlinear resonance passage // Proc. of All-Union workshop on particle accelerators, 1968, pp. 374­378. 5. S

  8. Socially Optimal Location of Facilities with Fixed Servers, Stochastic ...

    E-Print Network [OSTI]

    2003-02-24T23:59:59.000Z

    the overall time spent by all users either traveling or waiting for service, as opposed to including service-level constraints that tend to equalize waiting times

  9. TWO SIMPLE TOOLS FOR DESIGN OF FIXED SHADES

    E-Print Network [OSTI]

    Nawrocki, Dave

    2013-01-01T23:59:59.000Z

    and Building Data The Passive Solar Group at Lawrence Berkeley Laboratory (LBL) is involved in the design

  10. TWO SIMPLE TOOLS FOR DESIGN OF FIXED SHADES

    E-Print Network [OSTI]

    Nawrocki, Dave

    2013-01-01T23:59:59.000Z

    Kammerud Passive Solar Analysis and Design Group LawrencePassive Solar Group at Lawrence Berkeley Laboratory (LBL) is involved in the designPassive Solar Conference, Amherst, MA, October 19-26, 1980 TWO SIMPLE TOOLS FOR DESIGN

  11. Competitive Multi-period Pricing with Fixed Inventories

    E-Print Network [OSTI]

    Perakis, Georgia

    This paper studies the problem of multi-period pricing for perishable products in a competitive (oligopolistic) market. We study non cooperative Nash equilibrium policies for sellers. At the beginning of the time horizon, ...

  12. Powerline perching with a fixed-wing UAV

    E-Print Network [OSTI]

    Moore, Joseph L. (Joseph Lawrence)

    2011-01-01T23:59:59.000Z

    Small and micro UAVs have enabled a number of new mission capabilities, including navigating in and around buildings and performing perch-and-stare surveillance. However, one of the primary limitations of these small ...

  13. Wind-Induced Slow Fading in Foliated Fixed Wireless Links

    E-Print Network [OSTI]

    Cambridge, University of

    .e., seasonal and fast fading [2-3]. The seasonal changes of physical characteristics of trees, i.e., on

  14. On the uniqueness of loopy belief propagation fixed points

    E-Print Network [OSTI]

    Heskes, Tom

    those for convexity of the Bethe free energy. We compare them with (a strength­ ened version of algorithms as well as for other approximate free energies. 1 Introduction Loopy belief propagation is Pearl belief propagation correspond to extrema of the so­called Bethe free energy (Yedidia, 1 #12; Freeman

  15. A Mixed Integer Nonlinear Programming Framework for Fixed Path ...

    E-Print Network [OSTI]

    2013-06-10T23:59:59.000Z

    of mathematical optimization-based motion planning (e.g., [5], [6]), and to the best ... are with the Electrical and Computer Engineering Department, Drexel University, ... uses a branch-and-bound method for handling integer variables, and an ...

  16. University of Pittsburgh FINANCIAL GUIDELINE Subject: Fixed Assets

    E-Print Network [OSTI]

    Sibille, Etienne

    of its capital facilities and equipment to effectively manage these financial resources. This information are to be categorized by separate asset classes with each asset class having its own estimated useful life. Capital with FASB Statements 34 Capitalization of Interest Cost and 42 Determining Materiality for Capitalization

  17. Fixing famine : the politics of information in famine early warning

    E-Print Network [OSTI]

    Burg, Suzanne M. M.

    2008-01-01T23:59:59.000Z

    exposed: Biological citizens after Chernobyl. Princeton, NJ:in relation to the Chernobyl nuclear explosion would provideon disability from the Chernobyl disaster become rights and

  18. Paying for the Fixed Costs of Roads David Levinson

    E-Print Network [OSTI]

    Levinson, David M.

    is significantly less efficient as a revenue-raising scheme than petrol taxes, which often lose less than 1 per

  19. Floridians' imaginations explode with oil well fixes By BOB LEMENDOLA

    E-Print Network [OSTI]

    Belogay, Eugene A.

    involves using stronger, lighter carbon composite materials to make the undersea pipes and rig. Another

  20. THE JACOBIAN OF A RIEMANN SURFACE Fix a compact ...

    E-Print Network [OSTI]

    2013-11-30T23:59:59.000Z

    Given a divisor D = ? npp, recall that we can associate a sheaf OX(D). By ... compatible with restriction, and such that M is locally isomorphic to OX. The.