National Library of Energy BETA

Sample records for left axis 3

  1. Deriving Displacement from a 3 axis Accelerometer Mr. Andrew Blake

    E-Print Network [OSTI]

    Winstanley, Graham

    Deriving Displacement from a 3 axis Accelerometer Mr. Andrew Blake University of Brighton CMIS, Additive 1. Introduction The Nintendo WiiTM, Sony's Playstation 3TM and Microsoft's Xbox 360TM all feature a 1000 seconds is 1,000,000 times greater than that at 1 second. Any small offset errors

  2. Digital Design and Fabrication Techniques Using a 3-Axis CNC Mill 

    E-Print Network [OSTI]

    Coffman, Ky

    2010-07-14

    as to produce thousands of identical ones (Reffat, 2008). Malbec The digital fabrication tools used in our project Malbec, included the digital modeling tools: Autodesk Maya and Rhino, the manufacturing software, MasterCAM, and our machine used was a 3...-file set-up Since we knew the size of our material stock, we drew a 4? x 8? plane in Rhino and placed the form to be milled in the center of the plane. This ensured that the edges of the form would not be slightly cut off due to inevitable inaccuracies...

  3. Synthesis and Characterization of Self-assembled c-axis Oriented Bi2Sr3Co2Oy Thin Films by the Sol gel Method

    SciTech Connect (OSTI)

    Lei H.; Zhu, X.; Tang, X.; Shi, D.; Jian, H.; Yeoh, W.K.; Zhao, B.; Yang, J.; Li, Q.; Zheng, R.; Dou, S.; Sun, Y.

    2011-08-18

    Bi{sub 2}Sr{sub 3}Co{sub 2}Oy thin films are prepared on SrTiO{sub 3} (100), (110) and (111) single crystal substrates using the sol-gel method. All the thin films are c-axis oriented regardless of the orientation of the substrate suggesting self-assembled c-axis orientation, and X-ray photoelectron spectroscopy results give evidence of coexistence of Co{sup 3+} and Co{sup 2+} ions in the derived films. Transmission electronic microscopy observations reveal that all samples are c-axis oriented with no obvious differences for different samples, and the c-axis lattice constant is determined as 15 {angstrom} suggesting the misfit structure. A phenomenological thermodynamic phase diagram for self-assembled c-axis orientation is established for misfit cobaltate-based films using chemical solution deposition. All samples behave like semiconductors due to the coexistence of Co{sup 3+}/Co{sup 2+} ions, and the resistivity at 350 K is 47, 39 and 17 m{Omega} cm for the thin films on SrTiO{sub 3} (100), (110) and (111), respectively, whereas the Seebeck coefficient at 300 K is 97, 89 and 77 {micro}V K{sup -1}. The successful attainment of Bi{sub 2}Sr{sub 3}Co{sub 2}O{sub y} thin films with self-assembled c-axis orientation will provide an effective prototype for investigation of growth mechanisms in complex oxide thin films with a misfit structure.

  4. Epitaxial c-axis oriented BaTiO{sub 3} thin films on SrTiO{sub 3}-buffered Si(001) by atomic layer deposition

    SciTech Connect (OSTI)

    Ngo, Thong Q.; McDaniel, Martin D.; Ekerdt, John G., E-mail: ekerdt@che.utexas.edu [Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712 (United States); Posadas, Agham B.; Demkov, Alexander A. [Department of Physics, The University of Texas at Austin, Austin, Texas 78712 (United States); Hu, Chengqing; Yu, Edward T. [Department of Electrical Engineering, The University of Texas at Austin, Austin, Texas 78712 (United States); Bruley, John [IBM Research Division, Yorktown Heights, New York 10593 (United States)

    2014-02-24

    Atomic layer deposition (ALD) of epitaxial c-axis oriented BaTiO{sub 3} (BTO) on Si(001) using a thin (1.6?nm) buffer layer of SrTiO{sub 3} (STO) grown by molecular beam epitaxy is reported. The ALD growth of crystalline BTO films at 225??°C used barium bis(triisopropylcyclopentadienyl), titanium tetraisopropoxide, and water as co-reactants. X-ray diffraction (XRD) reveals a high degree of crystallinity and c-axis orientation of as-deposited BTO films. Crystallinity is improved after vacuum annealing at 600??°C. Two-dimensional XRD confirms the tetragonal structure and orientation of 7–20-nm thick films. The effect of the annealing process on the BTO structure is discussed. A clean STO/Si interface is found using in-situ X-ray photoelectron spectroscopy and confirmed by cross-sectional scanning transmission electron microscopy. The capacitance-voltage characteristics of 7–20?nm-thick BTO films are examined and show an effective dielectric constant of ?660 for the heterostructure.

  5. A comparative analysis of 3D conformal deep inspiratory–breath hold and free-breathing intensity-modulated radiation therapy for left-sided breast cancer

    SciTech Connect (OSTI)

    Reardon, Kelli A.; Read, Paul W.; Morris, Monica M.; Reardon, Michael A.; Geesey, Constance; Wijesooriya, Krishni

    2013-07-01

    Patients undergoing radiation for left-sided breast cancer have increased rates of coronary artery disease. Free-breathing intensity-modulated radiation therapy (FB-IMRT) and 3-dimensional conformal deep inspiratory–breath hold (3D-DIBH) reduce cardiac irradiation. The purpose of this study is to compare the dose to organs at risk in FB-IMRT vs 3D-DIBH for patients with left-sided breast cancer. Ten patients with left-sided breast cancer had 2 computed tomography scans: free breathing and voluntary DIBH. Optimization of the IMRT plan was performed on the free-breathing scan using 6 noncoplanar tangential beams. The 3D-DIBH plan was optimized on the DIBH scan and used standard tangents. Mean volumes of the heart, the left anterior descending coronary artery (LAD), the total lung, and the right breast receiving 5% to 95% (5% increments) of the prescription dose were calculated. Mean volumes of the heart and the LAD were lower (p<0.05) in 3D-DIBH for volumes receiving 5% to 80% of the prescription dose for the heart and 5% for the LAD. Mean dose to the LAD and heart were lower in 3D-DIBH (p?0.01). Mean volumes of the total lung were lower in FB-IMRT for dose levels 20% to 75% (p<0.05), but mean dose was not different. Mean volumes of the right breast were not different for any dose; however, mean dose was lower for 3D-DIBH (p = 0.04). 3D-DIBH is an alternative approach to FB-IMRT that provides a clinically equivalent treatment for patients with left-sided breast cancer while sparing organs at risk with increased ease of implementation.

  6. 4 Axis Implementation of the Active Feedback Mirror System for the IR Beamline 1.4.3

    E-Print Network [OSTI]

    ., Livermore, CA 94550-9234 INTRODUCTION After extensive passive noise re-mediation Beamline 1.4.3 still had implemented on Beamline 1.4. Inset shows photograph of spool piece housing the first beamsplitter, PSD #1 is that we have reduced the noise by both passive and

  7. Artists 'draw on air' to create 3D illustrations (Left) An artist tests Drawing on Air, which uses a stereoscopic desktop display, stylus and tracking device. (Right) An illustration of a 3D bat

    E-Print Network [OSTI]

    Laidlaw, David

    Artists 'draw on air' to create 3D illustrations (Left) An artist tests Drawing on Air, which uses a stylus in one hand and a tracking device in the other, an artist can draw 3D objects in the air with unprecedented precision. This new system is called "Drawing on Air," and researchers have designed the interface

  8. Vertical axis wind turbines

    DOE Patents [OSTI]

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

    2011-03-08

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

  9. State of the art for ab initio vs empirical potentials for predicting 6e$^{-}$ excited state molecular energies: Application to Li$_{2}\\left(b,1^{3}?_{u}\\right)$

    E-Print Network [OSTI]

    Nikesh S. Dattani; Robert J. Le Roy

    2015-08-28

    We build the first analytic empirical potential for the most deeply bound $\\mbox{Li}_{2}$ state: $b\\left(1^{3}\\Pi_{u}\\right)$. Our potential is based on experimental energy transitions covering $v=0-34$, and very high precision theoretical long-range constants. It provides high accuracy predictions up to $v=100$ which pave the way for high-precision long-range measurements, and hopefully an eventual resolution of the age old discrepancy between experiment and theory for the $\\mbox{Li}\\left(2^{2}S\\right)+\\mbox{Li}\\left(2^{2}P\\right)$ $C_{3}$ value. State of the art ab initio calculations predict vibrational energy spacings that are all in at most 0.8 cm$^{-1}$ disagreement with the empirical potential.

  10. State of the art for ab initio vs empirical potentials for predicting 6e$^{-}$ excited state molecular energies: Application to Li$_{2}\\left(b,1^{3}\\Pi_{u}\\right)$

    E-Print Network [OSTI]

    Dattani, Nikesh S

    2015-01-01

    We build the first analytic empirical potential for the most deeply bound $\\mbox{Li}_{2}$ state: $b\\left(1^{3}\\Pi_{u}\\right)$. Our potential is based on experimental energy transitions covering $v=0-34$, and very high precision theoretical long-range constants. It provides high accuracy predictions up to $v=100$ which pave the way for high-precision long-range measurements, and hopefully an eventual resolution of the age old discrepancy between experiment and theory for the $\\mbox{Li}\\left(2^{2}S\\right)+\\mbox{Li}\\left(2^{2}P\\right)$ $C_{3}$ value. State of the art ab initio calculations predict vibrational energy spacings that are all in at most 0.8 cm$^{-1}$ disagreement with the empirical potential.

  11. Analytic potentials and vibrational energies for Li$_{2}$ states dissociating to $\\mbox{Li}\\left(2S\\right)+\\mbox{Li}\\left(3P\\right)$. Part 1: The $^{2S+1}\\Pi_{u/g}$ states

    E-Print Network [OSTI]

    Dattani, Nikesh S

    2015-01-01

    Analytic potentials are built for all four $^{2S+1}\\Pi_{u/g}$ states of Li$_{2}$ dissociating to Li$(2S)$ + Li$(3P)$: $3b(3^{3}\\Pi_{u})$, $3B(3^{1}\\Pi_{u})$, $3C(3^{1}\\Pi_{g}),$ and $3d(3^{3}\\Pi_{g})$. These potentials include the effect of spin-orbit coupling for large internuclear distances, and include state of the art long-range constants. This is the first successful demonstration of fully analytic diatomic potentials that capture features that are usually considered too difficult to capture without a point-wise potential, such as multiple minima, and shelves. Vibrational energies for each potential are presented for the isotopologues $^{6,6}$Li$_{2}$, $^{6,7}$Li$_{2}$, $^{7,7}$Li$_{2}$, and the elusive `halo nucleonic molecule' $^{11,11}$Li$_{2}$. These energies are claimed to be accurate enough for new high-precision experimental setups such as the one presented in {[}Sebastian \\emph{et al.} Phys. Rev. A, \\textbf{90}, 033417 (2014){]} to measure and assign energy levels of these electronic states, all ...

  12. Analytic potentials and vibrational energies for Li$_{2}$ states dissociating to $\\mbox{Li}\\left(2S\\right)+\\mbox{Li}\\left(3P\\right)$. Part 1: The $^{2S+1}?_{u/g}$ states

    E-Print Network [OSTI]

    Nikesh S. Dattani

    2015-09-23

    Analytic potentials are built for all four $^{2S+1}\\Pi_{u/g}$ states of Li$_{2}$ dissociating to Li$(2S)$ + Li$(3P)$: $3b(3^{3}\\Pi_{u})$, $3B(3^{1}\\Pi_{u})$, $3C(3^{1}\\Pi_{g}),$ and $3d(3^{3}\\Pi_{g})$. These potentials include the effect of spin-orbit coupling for large internuclear distances, and include state of the art long-range constants. This is the first successful demonstration of fully analytic diatomic potentials that capture features that are usually considered too difficult to capture without a point-wise potential, such as multiple minima, and shelves. Vibrational energies for each potential are presented for the isotopologues $^{6,6}$Li$_{2}$, $^{6,7}$Li$_{2}$, $^{7,7}$Li$_{2}$, and the elusive `halo nucleonic molecule' $^{11,11}$Li$_{2}$. These energies are claimed to be accurate enough for new high-precision experimental setups such as the one presented in {[}Sebastian \\emph{et al.} Phys. Rev. A, \\textbf{90}, 033417 (2014){]} to measure and assign energy levels of these electronic states, all of which have not yet been explored in the long-range region. Measuring energies in the long-range region of these electronic states may be significant for studying the \\emph{ab initio} vs experiment discrepancy discussed in {[}Tang \\emph{et al.} Phys. Rev. A, \\textbf{84}, 052502 (2014){]} for the $C_{3}$ long-range constant of Lithium, which has significance for improving the SI definition of the second.

  13. Vertical axis wind turbine acoustics

    E-Print Network [OSTI]

    Pearson, Charlie

    2014-04-08

    due to the political support for renewable energy and the introduction of Feed In Tariffs, which pay home owners for generating their own electricity. Due to their ability to respond quickly to changing wind conditions, small-scale vertical axis...

  14. Design and Implementation of a 9-Axis Inertial Measurement Unit Pei-Chun Lin and Chi-Wei Ho

    E-Print Network [OSTI]

    Lin, Pei-Chun

    Design and Implementation of a 9-Axis Inertial Measurement Unit Pei-Chun Lin and Chi-Wei Ho Abstract-- We report on a 9-axis inertial measurement unit (IMU) which utilizes 3-axis angular velocity of states. A traditional inertial measurement unit (IMU) is comprised of 3-axis acceleration measurement

  15. Vertical axis wind turbine airfoil

    DOE Patents [OSTI]

    Krivcov, Vladimir; Krivospitski, Vladimir; Maksimov, Vasili; Halstead, Richard; Grahov, Jurij Vasiljevich

    2012-12-18

    A vertical axis wind turbine airfoil is described. The wind turbine airfoil can include a leading edge, a trailing edge, an upper curved surface, a lower curved surface, and a centerline running between the upper surface and the lower surface and from the leading edge to the trailing edge. The airfoil can be configured so that the distance between the centerline and the upper surface is the same as the distance between the centerline and the lower surface at all points along the length of the airfoil. A plurality of such airfoils can be included in a vertical axis wind turbine. These airfoils can be vertically disposed and can rotate about a vertical axis.

  16. Two-axis angular effector

    DOE Patents [OSTI]

    Vaughn, Mark R. (Albuquerque, NM); Robinett, III, Rush D. (Tijeras, NM); Phelan, John R. (Albuquerque, NM); Van Zuiden, Don M. (Albuquerque, NM)

    1997-01-21

    A new class of coplanar two-axis angular effectors. These effectors combine a two-axis rotational joint analogous to a Cardan joint with linear actuators in a manner to produce a wider range of rotational motion about both axes defined by the joint. This new class of effectors also allows design of robotic manipulators having very high strength and efficiency. These effectors are particularly suited for remote operation in unknown surroundings, because of their extraordinary versatility. An immediate application is to the problems which arise in nuclear waste remediation.

  17. CORRESPONDENCE Reduced major axis regression

    E-Print Network [OSTI]

    CORRESPONDENCE Reduced major axis regression and the island rule The Ôisland ruleÕ describes). The slope of the least-squares regression of Y on X, b, measures the extent to which large body sizes tend- ferent way, as the regression of Y ) X on X, and here the slope (b¢) is generally negative (b¢ = b ) 1

  18. Three axis velocity probe system

    DOE Patents [OSTI]

    Fasching, George E. (Morgantown, WV); Smith, Jr., Nelson S. (Morgantown, WV); Utt, Carroll E. (Morgantown, WV)

    1992-01-01

    A three-axis velocity probe system for determining three-axis positional velocities of small particles in fluidized bed systems and similar applications. This system has a sensor head containing four closely-spaced sensing electrodes of small wires that have flat ends to establish a two axis plane, e.g. a X-Y plane. Two of the sensing electrodes are positioned along one of the axes and the other two are along the second axis. These four sensing electrodes are surrounded by a guard electrode, and the outer surface is a ground electrode and support member for the sensing head. The electrodes are excited by, for example, sinusoidal voltage having a peak-to-peak voltage of up to 500 volts at a frequency of 2 MHz. Capacitive currents flowing between the four sensing electrodes and the ground electrode are influenced by the presence and position of a particle passing the sensing head. Any changes in these currents due to the particle are amplified and synchronously detected to produce positional signal values that are converted to digital form. Using these digital forms and two values of time permit generation of values of the three components of the particle vector and thus the total velocity vector.

  19. Kinematic and Dynamic Analyses of the Orthoglide 5-axis

    E-Print Network [OSTI]

    Ur-Rehman, Raza; Chablat, Damien; Wenger, Philippe

    2008-01-01

    This paper deals with the kinematic and dynamic analyses of the Orthoglide 5-axis, a five-degree-of-freedom manipulator. It is derived from two manipulators: i) the Orthoglide 3-axis; a three dof translational manipulator and ii) the Agile eye; a parallel spherical wrist. First, the kinematic and dynamic models of the Orthoglide 5-axis are developed. The geometric and inertial parameters of the manipulator are determined by means of a CAD software. Then, the required motors performances are evaluated for some test trajectories. Finally, the motors are selected in the catalogue from the previous results.

  20. Turbulence in vertical axis wind turbine canopies Matthias Kinzel, Daniel B. Araya, and John O. Dabiri

    E-Print Network [OSTI]

    Faraon, Andrei

    Turbulence in vertical axis wind turbine canopies Matthias Kinzel, Daniel B. Araya, and John O of a hydroformed metal blade for vertical-axis wind turbines J. Renewable Sustainable Energy 7, 043135 (2015); 10 blades for a vertical axis wind turbine J. Renewable Sustainable Energy 3, 013106 (2011); 10

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

    E-Print Network [OSTI]

    Alonso, Juan J.

    Multi-Fidelity Uncertainty Quantification: Application to a Vertical Axis Wind Turbine Under, USA Designing better vertical axis wind turbines (VAWTs) requires considering the uncertain wind cost. Low-fidelity tools are used extensively in the modeling of vertical axis wind turbines (VAWTs)3

  2. AXI LLC | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (UtilityMichigan)data bookresult9)ATS Lighting Inc Jump to:AVTEC JumpAXI

  3. Left-handed properties of manganite-perovskites La{sub 1-x}Sr{sub x}MnO{sub 3} at various dopant concentrations

    SciTech Connect (OSTI)

    Belozorov, D. P.; Girich, A. A.; Tarapov, S. I.; Pogorily, A. M.; Tovstolytkin, A. I.; Belous, A. G.; Solopan, S. A.

    2014-03-15

    The experimental study of Double Negative (DNG) state of electromagnetic wave propagating in lanthanum manganite-perovskites doped with strontium La{sub 1-x}Sr{sub x}MnO{sub 3} is provided firstly below individual Curie temperatures (in ferromagnetic metal state (FM) for La{sub 1-x}Sr{sub x}MnO{sub 3}). Various dopant concentrations are considered for ceramic specimens: x = 0.15;??0.225;??0.3;??0.45;??0.6. It is shown that dependence of the DNG-peak intensity on dopant concentration is sharply non-monotone with maximum at the dopant concentrations x = 0.225 – 0.3. This behaviour follows the change of Curie temperature with increase of dopant concentration in such substances. The obtained dependence of DNG peak intensity supports the opinion concerning the role of disorder in highly doped manganite-perovskite magnetic ceramics under study.

  4. Dual Axis Radiographic Hydrodynamic Test Facility | National...

    National Nuclear Security Administration (NNSA)

    Dual Axis Radiographic Hydrodynamic Test Facility | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  5. Left invariant control systems The category of left invariant control systems

    E-Print Network [OSTI]

    Wagner, Stephan

    Background Left invariant control systems Summary The category of left invariant control systems systems #12;Background Left invariant control systems Summary Outline 1 Background The language of categories Smooth manifolds Lie groups 2 Left invariant control systems Introduction and construction

  6. Two-axis spin squeezing in two cavities

    E-Print Network [OSTI]

    Caifeng Li; Jingtao Fan; Lixuan Yu; Gang Chen; Tian-Cai Zhang; Suotang Jia

    2015-02-02

    Ultracold atoms in an ultrahigh-finesse optical cavity are a powerful platform to produce spin squeezing since photon of cavity mode can induce nonlinear spin-spin interaction and thus generate a one-axis twisting Hamiltonian $H_{\\text{OAT}}=qJ_{x}^{2}$, whose corresponding maximal squeezing factor scales as $N^{-2/3}$, where $N$ is the atomic number. On the contrary, for the other two-axis twisting Hamiltonian $H_{\\text{TAT}}=q(J_{x}^{2}-J_{y}^{2})$, the maximal squeezing factor scales as $N^{-1}$, approaching the Heisenberg limit. In this paper, inspired by recent experiments of cavity-assisted Raman transitions, we propose a scheme, in which an ensemble of ultracold six-level atoms interacts with two quantized cavity fields and two pairs of Raman lasers, to realize a tunable two-axis spin Hamiltonian $%H=q(J_{x}^{2}+\\chi J_{y}^{2})+\\omega_{0}J_{z}$. For proper parameters, the above one- and two- axis twisting Hamiltonians are recovered, and the scaling of $N^{-1}$ of the maximal squeezing factor can occur naturally. On the other hand, in the two-axis twisting Hamiltonian, spin squeezing is usually reduced when increasing the effective atomic resonant frequency $\\omega_{0}$. Surprisingly, we find that by combined with the dimensionless parameter $\\chi(>-1)$, the effective atomic resonant frequency $\\omega_{0}$ can enhance spin squeezing largely. These results are benefit for achieving the required spin squeezing in experiments.

  7. Vibration Analysis of a Vertical Axis Wind Turbine Blade , S.Tullis 2

    E-Print Network [OSTI]

    Tullis, Stephen

    Vibration Analysis of a Vertical Axis Wind Turbine Blade K. Mc Laren 1 , S.Tullis 2 and S.Ziada 3 1 vibration source of a small-scale vertical axis wind turbine currently undergoing field-testing. The turbine consists of three 3 metre long vertically aligned blades each fixed to the central shaft by two horizontal

  8. Performance Testing of a Small Vertical-Axis Wind Turbine , S. Tullis2

    E-Print Network [OSTI]

    Tullis, Stephen

    Performance Testing of a Small Vertical-Axis Wind Turbine R. Bravo1 , S. Tullis2 , S. Ziada3 of electric production [1]. Although most performance testing for small-scale wind turbines is conducted vertical-axis wind turbines (VAWT) in urban settings, full-scale wind tunnel testing of a prototype 3.5 k

  9. NICMOS OPTICS OffAxis Conicoids Fold Mirrors

    E-Print Network [OSTI]

    Schneider, Glenn

    NICMOS OPTICS Off­Axis Conicoids Fold Mirrors Cameras 3, 1, 2 Pupil Al ignment Mirror Reimaging Optics (and Witness Samples) Before Installation The integrated NICMOS optical system is comprised of the fifteen NICMOS mirrors are mounted to a graphite epoxy truss, called the Fore­Optics Bracket (FOB

  10. Blade Offset and Pitch Effects on a High Solidity Vertical Axis Wind Turbine

    E-Print Network [OSTI]

    Tullis, Stephen

    Blade Offset and Pitch Effects on a High Solidity Vertical Axis Wind Turbine Andrzej J. Fiedler ABSTRACT A high solidity, small scale, 2.5m diameter by 3m high Vertical Axis Wind Turbine (VAWT in an open-air wind tunnel facility to investigate the effects of preset toe-in and toe-out turbine blade

  11. Medial Axis Local Planner: Local Planning for Medial Axis Roadmaps 

    E-Print Network [OSTI]

    Manavi, Kasra Mehron

    2012-07-16

    implemented this local planner and have tested it in 2D and 3D rigid body and 8D and 16D fixed base articulated linkage environments. We compare MALP with a straight-line local planner (SL), a typical local planer used in motion planning that interpolated...

  12. Jet shapes with the broadening axis

    E-Print Network [OSTI]

    Larkoski, Andrew James

    Broadening is a classic jet observable that probes the transverse momentum structure of jets. Traditionally, broadening has been measured with respect to the thrust axis, which is aligned along the (hemisphere) jet momentum ...

  13. Actuator assembly including a single axis of rotation locking member

    DOE Patents [OSTI]

    Quitmeyer, James N.; Benson, Dwayne M.; Geck, Kellan P.

    2009-12-08

    An actuator assembly including an actuator housing assembly and a single axis of rotation locking member fixedly attached to a portion of the actuator housing assembly and an external mounting structure. The single axis of rotation locking member restricting rotational movement of the actuator housing assembly about at least one axis. The single axis of rotation locking member is coupled at a first end to the actuator housing assembly about a Y axis and at a 90.degree. angle to an X and Z axis providing rotation of the actuator housing assembly about the Y axis. The single axis of rotation locking member is coupled at a second end to a mounting structure, and more particularly a mounting pin, about an X axis and at a 90.degree. angle to a Y and Z axis providing rotation of the actuator housing assembly about the X axis. The actuator assembly is thereby restricted from rotation about the Z axis.

  14. User's manual for the vertical axis wind turbine performance...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: User's manual for the vertical axis wind turbine performance computer code darter Citation Details In-Document Search Title: User's manual for the vertical axis...

  15. User's manual for the vertical axis wind turbine performance...

    Office of Scientific and Technical Information (OSTI)

    User's manual for the vertical axis wind turbine performance computer code darter Citation Details In-Document Search Title: User's manual for the vertical axis wind turbine...

  16. Sandia Energy - Innovative Offshore Vertical-Axis Wind Turbine...

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

    Innovative Offshore Vertical-Axis Wind Turbine Rotors Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Innovative Offshore Vertical-Axis Wind Turbine...

  17. DARHT: Dual-Axis Radiographic Hydrodynamic Test Facility

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

    DARHT: Dual-Axis Radiographic Hydrodynamic Test Facility DARHT: Dual-Axis Radiographic Hydrodynamic Test Facility DARHT, supports a critical component of LANL's primary mission: to...

  18. Bicyclic semigroups of left I-quotients

    E-Print Network [OSTI]

    Ghroda, Nassraddin

    2011-01-01

    In this article we study left I-orders in the bicyclic monoid $\\mathcal{B}$. We give necessary and sufficient conditions for a subsemigroup of $\\mathcal{B}$ to be a left I-oreder in $\\mathcal{B}$. We then prove that any left I-order in $\\mathcal{B}$ is straight.

  19. Modular off-axis solar concentrator

    DOE Patents [OSTI]

    Plesniak, Adam P; Hall, John C

    2015-01-27

    A solar concentrator including a housing defining a vertical axis and including a receiving wall connected to a reflecting wall to define an internal volume and an opening into the internal volume, wherein the reflecting wall defines at least one primary optical element, and wherein at least a portion of the reflecting wall includes a layer of reflective material, the housing further including a cover connected to the receiving wall and the reflecting wall to seal the opening, and at least one receiver mounted on the receiving wall such that a vertical axis of the receiver is disposed at a non-zero angle relative to the vertical axis of the housing, the receiver including at least one photovoltaic cell.

  20. Enclosed, off-axis solar concentrator

    DOE Patents [OSTI]

    Benitez, Pablo; Grip, Robert E; Minano, Juan C; Narayanan, Authi A; Plesniak, Adam; Schwartz, Joel A

    2013-11-26

    A solar concentrator including a housing having receiving wall, a reflecting wall and at least two end walls, the receiving, reflecting and end walls defining a three-dimensional volume having an inlet, wherein a vertical axis of the housing is generally perpendicular to the inlet, a receiver mounted on the receiving wall of the housing, the receiver including at least one photovoltaic cell, wherein a vertical axis of the receiver is disposed at a non-zero angle relative to the vertical axis of the housing, at least one clip disposed on the reflecting wall an optical element received within the three-dimensional volume, the optical element including at least one tab, the tab being engaged by the clip to align the optical element with the receiver, and a window received over the inlet to enclose the housing.

  1. Isodynamic axisymmetric equilibrium near the magnetic axis

    SciTech Connect (OSTI)

    Arsenin, V. V., E-mail: arsenin@nfi.kiae.ru [National Research Centre Kurchatov Institute (Russian Federation)

    2013-08-15

    Plasma equilibrium near the magnetic axis of an axisymmetric toroidal magnetic confinement system is described in orthogonal flux coordinates. For the case of a constant current density in the vicinity of the axis and magnetic surfaces with nearly circular cross sections, expressions for the poloidal and toroidal magnetic field components are obtained in these coordinates by using expansion in the reciprocal of the aspect ratio. These expressions allow one to easily derive relationships between quantities in an isodynamic equilibrium, in which the absolute value of the magnetic field is constant along the magnetic surface (Palumbo’s configuration)

  2. A low order model for vertical axis wind turbines

    E-Print Network [OSTI]

    Drela, Mark

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

  3. The Girl Len Left Behind 

    E-Print Network [OSTI]

    Unknown

    2011-09-05

    ............................................................................................29 4.3.1 Camera Structure, Viewing Frustum.................................................29 4.3.2 Background Color, Image and Skybox .............................................31 4.3.3 Fog..............................................................................86 F.1 Camera Structure....................................................................................86 F.2 Fog State Structure.................................................................................87 F.3 Window Structure...

  4. Feasibility and optical performance of one axis three positions sun-tracking polar-axis aligned CPCs for photovoltaic applications

    SciTech Connect (OSTI)

    Tang, Runsheng; Yu, Yamei

    2010-09-15

    A new design concept, called one axis three positions sun-tracking polar-axis aligned CPCs (3P-CPCs, in short), was proposed and theoretically studied in this work for photovoltaic applications. The proposed trough-like CPC is oriented in the polar-axis direction, and the aperture is daily adjusted eastward, southward, and westward in the morning, noon and afternoon, respectively, by rotating the CPC trough, to ensure efficient collection of beam radiation nearly all day. To investigate the optical performance of such CPCs, an analytical mathematical procedure is developed to estimate daily and annual solar gain captured by such CPCs based on extraterrestrial radiation and monthly horizontal radiation. Results show that the acceptance half-angle of 3P-CPCs is a unique parameter to determine their optical performance according to extraterrestrial radiation, and the annual solar gain stays constant if the acceptance half-angle, {theta}{sub a}, is less than one third of {omega}{sub 0,min}, the sunset hour angle in the winter solstice, otherwise decreases with the increase of {theta}{sub a}. For 3P-CPCs used in China, the annual solar gain, depending on the climatic conditions in site, decreased with the acceptance half-angle, but such decrease was slow for the case of {theta}{sub a}{<=}{omega}{sub 0,min}/3, indicating that the acceptance half-angle should be less than one third of {omega}{sub 0,min} for maximizing annual energy collection. Compared to fixed east-west aligned CPCs (EW-CPCs) with a yearly optimal acceptance half-angle, the fixed south-facing polar-axis aligned CPCs (1P-CPCs) with the same acceptance half-angle as the EW-CPCs annually collected about 65-74% of that EW-CPCs did, whereas 3P-CPCs annually collected 1.26-1.45 times of that EW-CPCs collected, indicating that 3P-CPCs were more efficient for concentrating solar radiation onto their coupling solar cells. (author)

  5. Severe left diaphragmatic hernia limits size of fetal left heart more than right diaphragmatic hernia.

    E-Print Network [OSTI]

    2015-01-01

    hernia limits size of fetal left heart more than does rightand outcome of left heart hypoplasia in fetal congenitaltowards the right side of the heart may contribute to poorer

  6. Axis-1 diode simulations I: standard 2-inch cathode

    SciTech Connect (OSTI)

    Ekdahl, Carl [Los Alamos National Laboratory

    2011-01-11

    The standard configuration of the DARHT Axis-I diode features a 5.08-cm diameter velvet emitter mounted in the flat surface of the cathode shroud. The surface of the velvet is slightly recessed {approx}2.5 mm. This configuration produces a 1.75 kA beam when a 3.8-MV pulse is applied to the anode-cathode (AK) gap. This note addresses some of the physics of this diode through the use of finite-element simulations.

  7. Medial-Axis Biased Rapidly-Exploring Random Trees 

    E-Print Network [OSTI]

    Greco, Evan

    2012-05-09

    , 1998, 1998. [3] S. A. Wilmarth, N. M. Amato, and P. F. Stiller, MAPRM: A probabilistic roadmap planner with sampling on the medial axis of the free space. In Proc. IEEE Int. Conf. Robot. Autom. (ICRA), vol. 2, pp. 1024{1031, 1999. [4] J. J. Ku?ner and S.... M. LaValle, RRT-Connect: An eÆcient approach to single- query path planning. In Proc. IEEE Int. Conf. Robot. Autom. (ICRA), pp. 995{1001, 2000. [5] S. Rodriguez, X. Tang, J. M. Lien, and N. M. Amato, An obstacle-based rapidly- exploring random tree...

  8. Vertical axis wind turbine with continuous blade angle adjustment

    E-Print Network [OSTI]

    Weiss, Samuel Bruce

    2010-01-01

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

  9. Three-axis asymmetric radiation detector system

    DOE Patents [OSTI]

    Martini, Mario Pierangelo (Oak Ridge, TN); Gedcke, Dale A. (Oak Ridge, TN); Raudorf, Thomas W. (Oak Ridge, TN); Sangsingkeow, Pat (Knoxville, TN)

    2000-01-01

    A three-axis radiation detection system whose inner and outer electrodes are shaped and positioned so that the shortest path between any point on the inner electrode and the outer electrode is a different length whereby the rise time of a pulse derived from a detected radiation event can uniquely define the azimuthal and radial position of that event, and the outer electrode is divided into a plurality of segments in the longitudinal axial direction for locating the axial location of a radiation detection event occurring in the diode.

  10. Subhas Chandra Bose: darling of the Axis 

    E-Print Network [OSTI]

    Getz, Marshall Jay

    1993-01-01

    Bose's Memorandum Of Interest To The Nazis Difficult Days In Berlin 110 118 132 CHAPTER The Voice Of Indian Fascism The Fauj End Of A Dream Page 137 150 164 Volume II TABLE OF CONTENTS VI DARLING OF THE AXIS ill 169 Japan: The Tiny... Superpower Indian Nationalists Look To Japan The Story Of Nohan Singh Bose Looks East Bose Becomes Established In Asia VII NOBODY'S DARLING 169 176 182 192 201 214 "Free India" At Last Noney For The Novement On To Delhi Nother India In Turmoil...

  11. Axis Technologies Group Inc | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC Jump to:Greece: EnergyMontana) Jump to:Axis Technologies Group Inc

  12. Testing left-right symmetric models

    E-Print Network [OSTI]

    W. Dekens

    2015-05-25

    The difference between left- and right-handed particles is perhaps one of the most puzzling aspects of the Standard Model (SM). In left-right models (LRMs) the symmetry between left- and right-handed particles can be restored at high energy. Due to this symmetry these models are quite predictive with regards to experimental observables, making them interesting beyond the SM candidates. Here we discuss the more symmetric LRMs, the experimental constraints, and the fine-tuning present in the Higgs sector.

  13. Quantum levitation by left-handed metamaterials

    E-Print Network [OSTI]

    U. Leonhardt; T. G. Philbin

    2007-07-19

    Left-handed metamaterials make perfect lenses that image classical electromagnetic fields with significantly higher resolution than the diffraction limit. Here we consider the quantum physics of such devices. We show that the Casimir force of two conducting plates may turn from attraction to repulsion if a perfect lens is sandwiched between them. For optical left-handed metamaterials this repulsive force of the quantum vacuum may levitate ultra-thin mirrors.

  14. Two-axis tracking solar collector mechanism

    DOE Patents [OSTI]

    Johnson, Kenneth C. (201 W. California Ave., #401, Sunnyvale, CA 94086)

    1990-01-01

    This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion.

  15. Two-axis tracking solar collector mechanism

    DOE Patents [OSTI]

    Johnson, Kenneth C. (201 W. California Ave. #705, Sunnyvale, CA 94086)

    1992-01-01

    This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion.

  16. Two-axis tracking solar collector mechanism

    DOE Patents [OSTI]

    Johnson, K.C.

    1992-12-08

    This invention is a novel solar tracking mechanism incorporating a number of practical features that give it superior environmental resilience and exceptional tracking accuracy. The mechanism comprises a lightweight space-frame assembly supporting an array of point-focus Fresnel lenses in a two-axis tracking structure. The system is enclosed under a glass cover which isolates it from environmental exposure and enhances tracking accuracy by eliminating wind loading. Tracking accuracy is also enhanced by the system's broad-based tracking support. The system's primary intended application would be to focus highly concentrated sunlight into optical fibers for transmission to core building illumination zones, and the system may also have potential for photovoltaic or photothermal solar energy conversion. 16 figs.

  17. Ethics of Cardiac Transplantation in Hypoplastic Left Heart Syndrome

    E-Print Network [OSTI]

    Kon, Alexander A.

    2009-01-01

    neonates with hypoplastic left heart syndrome. Arch PediatrTabbutt S (2007) Hypoplastic left heart syndrome: consensus,for hypoplastic left heart syndrome. Ann Thorac Surg 72(6):

  18. A comparison of on-axis and off-axis heliostat alignment strategies

    SciTech Connect (OSTI)

    Jones, S.A.

    1996-03-01

    Heliostat installation and alignment costs will be an important element in future solar power tower projects. The predicted annual performances of on- and-off axis strategies are compared for 95 m{sup 2} flat-glass heliostats and an external, molten-salt receiver. Actual approaches to heliostat alignment that have been used in the past are briefly discussed, and relative strengths and limitations are noted. The optimal approach can vary with the application.

  19. KT Monograph Section E09 Fig 3

    E-Print Network [OSTI]

    Baker, P.

    2004-08-25

    stream_source_info E09_3.pdf.txt stream_content_type text/plain stream_size 515 Content-Encoding ISO-8859-1 stream_name E09_3.pdf.txt Content-Type text/plain; charset=ISO-8859-1 Table E9:3 Object 2422 Kilise Tepe, deposit 6209... : Distribution of species, body side and modifications Species Total Worked Cutmarks Charred Calcined Abrasion Erosion Rodent Semi-digestion left right left right left right left right left right left right left right left right left right 2 5 1 1 3 1 1 cf. Goat...

  20. Left-Wing Extremism: The Current Threat

    SciTech Connect (OSTI)

    Karl A. Seger

    2001-04-30

    Left-wing extremism is ''alive and well'' both in the US and internationally. Although the current domestic terrorist threat within the U. S. is focused on right-wing extremists, left-wing extremists are also active and have several objectives. Leftist extremists also pose an espionage threat to U.S. interests. While the threat to the U.S. government from leftist extremists has decreased in the past decade, it has not disappeared. There are individuals and organizations within the U.S. who maintain the same ideology that resulted in the growth of left-wing terrorism in this country in the 1970s and 1980s. Some of the leaders from that era are still communicating from Cuba with their followers in the U.S., and new leaders and groups are emerging.

  1. Constraining the Doublet Left-Right Model

    E-Print Network [OSTI]

    Luiz Vale Silva

    2015-01-22

    Left-Right Models (LRM) attempt at giving an understanding of the violation of parity (or charge-conjugation) by the weak interactions in the SM through a similar description of left- and right-handed currents at high energies. The spontaneous symmetry breaking of the LRM gauge group is triggered by an enlarged Higgs sector, usually consisting of two triplet fields (left-right symmetry breaking) and a bidoublet (electroweak symmetry breaking). I reconsider an alternative LRM with doublet instead of triplet fields. After explaining some features of this model, I discuss constraints on its parameters using electroweak precision observables (combined using the CKMfitter frequentist statistical framework) and neutral-meson mixing observables.

  2. Nonlinear characterization of a single-axis acoustic levitator

    SciTech Connect (OSTI)

    Andrade, Marco A. B.; Ramos, Tiago S.; Okina, Fábio T. A.; Adamowski, Julio C.

    2014-04-15

    The nonlinear behavior of a 20.3 kHz single-axis acoustic levitator formed by a Langevin transducer with a concave radiating surface and a concave reflector is experimentally investigated. In this study, a laser Doppler vibrometer is applied to measure the nonlinear sound field in the air gap between the transducer and the reflector. Additionally, an electronic balance is used in the measurement of the acoustic radiation force on the reflector as a function of the distance between the transducer and the reflector. The experimental results show some effects that cannot be described by the linear acoustic theory, such as the jump phenomenon, harmonic generation, and the hysteresis effect. The influence of these nonlinear effects on the acoustic levitation of small particles is discussed.

  3. Precision 2 g Dual Axis, PWM Output Accelerometer

    E-Print Network [OSTI]

    Lynch, Jerome P.

    g shock survival APPLICATIONS Automotive tilt alarms Vehicle dynamic control (VDC Platform stabilization/leveling Alarms and motion detectors High accuracy, 2-axis tilt sensing GENERAL

  4. Surface solitons in left-handed metamaterials

    E-Print Network [OSTI]

    G. T. Adamashvili; A. Knorr

    2007-09-08

    A theory of self-induced transparency of surface TM-mode propagating along a interface separating conventional and left-handed metamaterials is developed. A transition layer sandwiched between connected media is described using a model of a two-dimensional gas of quantum dots. Explicit analytical expressions for a surface optical soliton in the presence of single and biexciton transitions, depending on the magnetic permeability of the left-handed medium, are obtained with realistic parameters which can be reached in current experiments. It is shown that the sign of the total energy flow the surface mode depends on the material parameters of the quantum dots and the connected media.

  5. Yaw dynamics of horizontal axis wind turbines

    SciTech Connect (OSTI)

    Hansen, A.C. (Utah Univ., Salt Lake City, UT (United States))

    1992-05-01

    Designers of a horizontal axis wind turbine yaw mechanism are faced with a difficult decision. They know that if they elect to use a yaw- controlled rotor then the system will suffer increased initial cost and increased inherent maintenance and reliability problems. On the other hand, if they elect to allow the rotor to freely yaw they known they will have to account for unknown and random, though bounded, yaw rates. They will have a higher-risk design to trade-off against the potential for cost savings and reliability improvement. The risk of a yaw-free system could be minimized if methods were available for analyzing and understanding yaw behavior. The complexity of yaw behavior has, until recently, discouraged engineers from developing a complete yaw analysis method. The objectives of this work are to (1) provide a fundamental understanding of free-yaw mechanics and the design concepts most effective at eliminating yaw problems, and (2) provide tested design tools and guidelines for use by free-yaw wind systems manufacturers. The emphasis is on developing practical and sufficiently accurate design methods.

  6. Control system for a vertical axis windmill

    DOE Patents [OSTI]

    Brulle, Robert V. (St. Louis County, MO)

    1983-10-18

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

  7. Left-right spin asymmetry in ? N? ? h ?

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

    Gamberg, Leonard; Kang, Zhong -Bo; Metz, Andreas; Pitonyak, Daniel; Prokudin, Alexei

    2014-10-01

    We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute in twist-3 collinear factorization at leading order in perturbation theory. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. However, the magnitude of the computed asymmetries tends to be larger than the data. Potential reasons for this outcome are identified. We also give predictions formore »future experiments and highlight in particular the unique opportunities at an Electron Ion Collider.« less

  8. Left-right spin asymmetry in ?N??hX

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

    Gamberg, Leonard; Kang, Zhong -Bo; Metz, Andreas; Pitonyak, Daniel; Prokudin, Alexei

    2014-10-09

    In this study, we consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute in twist-3 collinear factorization at leading order in perturbation theory. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. However, the magnitude of the computed asymmetries tends to be larger than the data. Potential reasons for this outcome are identified. We alsomore »give predictions for future experiments and highlight in particular the unique opportunities at an Electron Ion Collider.« less

  9. THE MAXIMAL LEFT QUOTIENT RINGS OF ALTERNATIVE RINGS

    E-Print Network [OSTI]

    THE MAXIMAL LEFT QUOTIENT RINGS OF ALTERNATIVE RINGS Laura Artacho C´ardenas, Miguel G´omez Lozano1 of (general) left quotient ring of an alternative ring and show the existence of a maximal left quotient ring for every alternative ring which is a left quotient ring of itself. INTRODUCTION The theory of rings

  10. Origin of a magnetic easy axis in pipeline steel L. Clapham,a)

    E-Print Network [OSTI]

    Clapham, Lynann

    Origin of a magnetic easy axis in pipeline steel L. Clapham,a) C. Heald, T. Krause, and D. L and low temperature annealing treatments. Our results indicate that plastic deformation and residual 100 crystallographic texture such as that found in electrical steels.1 In addition, recent work2,3 has

  11. Compact Laser Scanning Distance Sensor with a Two-axis Gimbaled Microscanner for Volumetric Imaging

    E-Print Network [OSTI]

    Park, Namkyoo

    Compact Laser Scanning Distance Sensor with a Two-axis Gimbaled Microscanner for Volumetric Imaging@plaza.snu.ac.kr, daesung@stanford.edu, solgaard@stanford.edu Abstract: We report on a laser scanning volumetric image sensors [2], and triangulation sensors [3]. In this work, we propose a compact TOF volumetric imaging

  12. Spin-stabilized magnetic levitation without vertical axis of rotation

    DOE Patents [OSTI]

    Romero, Louis (Albuquerque, NM); Christenson, Todd (Albuquerque, NM); Aaronson, Gene (Albuquerque, NM)

    2009-06-09

    The symmetry properties of a magnetic levitation arrangement are exploited to produce spin-stabilized magnetic levitation without aligning the rotational axis of the rotor with the direction of the force of gravity. The rotation of the rotor stabilizes perturbations directed parallel to the rotational axis.

  13. A two-dimensional matrix correction for off-axis portal dose prediction errors

    SciTech Connect (OSTI)

    Bailey, Daniel W.; Kumaraswamy, Lalith; Bakhtiari, Mohammad; Podgorsak, Matthew B.

    2013-05-15

    Purpose: This study presents a follow-up to a modified calibration procedure for portal dosimetry published by Bailey et al. ['An effective correction algorithm for off-axis portal dosimetry errors,' Med. Phys. 36, 4089-4094 (2009)]. A commercial portal dose prediction system exhibits disagreement of up to 15% (calibrated units) between measured and predicted images as off-axis distance increases. The previous modified calibration procedure accounts for these off-axis effects in most regions of the detecting surface, but is limited by the simplistic assumption of radial symmetry. Methods: We find that a two-dimensional (2D) matrix correction, applied to each calibrated image, accounts for off-axis prediction errors in all regions of the detecting surface, including those still problematic after the radial correction is performed. The correction matrix is calculated by quantitative comparison of predicted and measured images that span the entire detecting surface. The correction matrix was verified for dose-linearity, and its effectiveness was verified on a number of test fields. The 2D correction was employed to retrospectively examine 22 off-axis, asymmetric electronic-compensation breast fields, five intensity-modulated brain fields (moderate-high modulation) manipulated for far off-axis delivery, and 29 intensity-modulated clinical fields of varying complexity in the central portion of the detecting surface. Results: Employing the matrix correction to the off-axis test fields and clinical fields, predicted vs measured portal dose agreement improves by up to 15%, producing up to 10% better agreement than the radial correction in some areas of the detecting surface. Gamma evaluation analyses (3 mm, 3% global, 10% dose threshold) of predicted vs measured portal dose images demonstrate pass rate improvement of up to 75% with the matrix correction, producing pass rates that are up to 30% higher than those resulting from the radial correction technique alone. As in the 1D correction case, the 2D algorithm leaves the portal dosimetry process virtually unchanged in the central portion of the detector, and thus these correction algorithms are not needed for centrally located fields of moderate size (at least, in the case of 6 MV beam energy).Conclusion: The 2D correction improves the portal dosimetry results for those fields for which the 1D correction proves insufficient, especially in the inplane, off-axis regions of the detector. This 2D correction neglects the relatively smaller discrepancies that may be caused by backscatter from nonuniform machine components downstream from the detecting layer.

  14. Off-axis illumination direct-to-digital holography

    DOE Patents [OSTI]

    Thomas, Clarence E.; Price, Jeffery R.; Voelkl, Edgar; Hanson, Gregory R.

    2004-06-08

    Systems and methods are described for off-axis illumination direct-to-digital holography. A method of recording an off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis, includes: reflecting a reference beam from a reference mirror at a non-normal angle; reflecting an object beam from an object at an angle with respect to an optical axis defined by a focusing lens; focusing the reference beam and the object beam at a focal plane of a digital recorder to form the off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; digitally recording the off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; Fourier analyzing the recorded off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes by transforming axes of the recorded off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes in Fourier space to sit on top of a heterodyne carrier frequency defined as an angle between the reference beam and the object beam; applying a digital filter to cut off signals around an original origin; and then performing an inverse Fourier transform.

  15. New Mixing Angles in the Left-Right Symmetric Model

    E-Print Network [OSTI]

    Kokado, Akira

    2015-01-01

    The left-right symmetric model is characterized by three mixing angles $\\theta _{12}, \\theta_{23}, \\theta_{13}$ between three gauge fields $B_\\mu , W^3_{L\\mu }, W^3_{R\\mu }$, which produce mass eigenstates $A_{\\mu }, Z_{\\mu }, Z'_{\\mu }$. The mass matrix can be diagonal if $\\tan{\\theta _{23}}=-\\sin{\\theta _{12}}\\sin{\\theta_{13}}/\\cos{\\theta_{12}} + O(\\delta )$ , where $\\delta $ is an infinitesimally small parameter associated with the spontaneously broken left-right symmetry. Taking the limit $\\delta \\to 0$, then introducing new variables $s'=\\sin{\\theta _{12}}\\cos{\\theta _{13}}$ and $c'=\\cos{\\theta _{12}}/\\cos{\\theta _{23}}$ with $s'^2 + c'^2 =1$, we show that all gauge boson masses can be expressed in terms of $s', c'$, namely, $M_W =$ 37.3 $/s'$ [Gev/$c^2$] and $M_Z/M_W=1/c'$. Coupling strengths between the proton and the $Z$ boson as well as those of neutrinos and $Z$ can be shown to be expressed by $s' , c'$. All results are completely the same as those of the Weinberg-Salam theory with $SU(2)_{L}\\times ...

  16. Three-dimensional Numerical Analysis on Blade Response of Vertical Axis Tidal Current Turbine Under Operational Condition

    SciTech Connect (OSTI)

    Li, Ye; Karri, Naveen K.; Wang, Qi

    2014-04-30

    Tidal power as a large-scale renewable source of energy has been receiving significant attention recently because of its advantages over the wind and other renewal energy sources. The technology used to harvest energy from tidal current is called a tidal current turbine. Though some of the principles of wind turbine design are applicable to tidal current turbines, the design of latter ones need additional considerations like cavitation damage, corrosion etc. for the long-term reliability of such turbines. Depending up on the orientation of axis, tidal current turbines can be classified as vertical axis turbines or horizontal axis turbines. Existing studies on the vertical axis tidal current turbine focus more on the hydrodynamic aspects of the turbine rather than the structural aspects. This paper summarizes our recent efforts to study the integrated hydrodynamic and structural aspects of the vertical axis tidal current turbines. After reviewing existing methods in modeling tidal current turbines, we developed a hybrid approach that combines discrete vortex method -finite element method that can simulate the integrated hydrodynamic and structural response of a vertical axis turbine. This hybrid method was initially employed to analyze a typical three-blade vertical axis turbine. The power coefficient was used to evaluate the hydrodynamic performance, and critical deflection was considered to evaluate the structural reliability. A sensitivity analysis was also conducted with various turbine height-to-radius ratios. The results indicate that both the power output and failure probability increase with the turbine height, suggesting a necessity for optimal design. An attempt to optimize a 3-blade vertical axis turbine design with hybrid method yielded a ratio of turbine height to radius (H/R) about 3.0 for reliable maximum power output.

  17. A two axis mirror positioning system with quadrature encoder output

    E-Print Network [OSTI]

    Woodruff, Rick Bryan

    2007-01-01

    This project was conducted in support of a solar concentrating technology that required the design and construction of a low cost, two axis rotational drive system with a resolution of one degree or better. The scope of ...

  18. Experimental and theoretical study of horizontal-axis wind turbines

    E-Print Network [OSTI]

    Anderson, Michael Broughton

    1981-10-20

    An experimental and theoretical study of horizontal-axis wind turbines is undertaken. The theoretical analyses cover the four major areas of aerodynamics, turbulence. aeroelasticity and blade optimisation. EXisting aerodynamic theories based...

  19. Magnetically suspended reaction sphere with one-axis hysteresis drive

    E-Print Network [OSTI]

    Zhou, Lei., S.M. Massachusetts Institute of Technology

    2014-01-01

    This thesis presents the design, modeling, implementation, and control of a magnetically suspended reaction sphere with one-axis hysteresis drive (1D-MSRS). The goal of this project is two fold: (a) exploring the design ...

  20. A hybrid type small 5-axis CNC milling machine

    E-Print Network [OSTI]

    Son, Seung-Kil, 1964-

    2002-01-01

    5-axis CNC milling machines are important in a number of industries ranging from aerospace to consumer-die-mold machining because they can deliver high machining accuracy with a spindle tilting capacity. Most of these ...

  1. EIS-0228: Dual Axis Radiographic Hydrodynamic Test (DARHT) Facility

    Broader source: Energy.gov [DOE]

    This EIS evaluates the potential environmental impact of a proposal to construct and operate the Dual Axis Radiographic Hydrodynamic Test (DARHT) facility at Los Alamos National Laboratory (LANL)...

  2. Miniaturization of a left ventricular assist device 

    E-Print Network [OSTI]

    Milios, Gregory Scott

    1996-01-01

    The ventricular assist device under investigation in this study is the multiple disk centrifugal pump developed by Miller [32, 33, 34]. The pump design is based on that invented by Nikola Tesla and is termed the TAMU-MDP pump, standing for the Texas A... of the National Institute of Health (NIH) as being an accurate provider of the typical flow regime and pressure profile experienced by the human heart. As the Tesla pump is intended for use as a left ventricular assist device, only the systemic vasculature has...

  3. Second-harmonic generation in nonlinear left-handed metamaterials

    E-Print Network [OSTI]

    Second-harmonic generation in nonlinear left-handed metamaterials Ilya V. Shadrivov, Alexander A August 21, 2005 We study the second-harmonic generation (SHG) in left-handed metamaterials that this novel parametric process can convert a surface of the left-handed metamaterial into an effective mirror

  4. Plasma ionization frequency, edge-to-axis density ratio, and density on axis of a cylindrical gas discharge

    SciTech Connect (OSTI)

    Palacio Mizrahi, J. H.

    2014-06-15

    A rigorous derivation of expressions, starting from the governing equations, for the ionization frequency, edge-to-axis ratio of plasma density, plasma density at the axis, and radially averaged plasma density in a cylindrical gas discharge has been obtained. The derived expressions are simple and involve the relevant parameters of the discharge: Cylinder radius, axial current, and neutral gas pressure. The found expressions account for ion inertia, ion temperature, and changes in plasma ion collisionality.

  5. DC 12m telescope. Preliminary calculations. Investigation of elevation axis position.

    SciTech Connect (OSTI)

    Guarino, V. J.; High Energy Physics

    2009-12-18

    This paper examines some simple calculations of a 2D model of a telescope in order to understand how different design parameters affect the design. For the design of a telescope it is assumed that they need a design that minimizes deflections of the dish and also minimizes the size of the motors and torques needed to rotate in elevation. A common belief is that a lighter dish and minimum counterweight is desirable. However, these calculations show this is not necessarily true. The torque needed for rotation depends on the moment of inertia and if the telescope is balanced about the elevation axis. A light dish with no CW requires that the elevation axis be several meters in front of the dish (8-9m) in order to be balanced. This is not practical from a structural point of view. If the elevation axis is only 2m in front of the dish and there is no counterweight then the telescope will be unbalanced and the toruqes required will be very high - much higher than the torques needed only to overcome inertia. A heavy dish though can act as its own counterweight and the elevation axis only has to be 2-3m in front of the dish in order to achieve a balanced telescope. Also the struts that support the camera from the dish place a load on the dish which will put a bending moment on the dish. This bending moment will deform the dish and require it to be stiffer. A counterweight structure performs two functions. First, it allows the telescope to be balanced about the elevation axis. Second, it applies a force on the dish that opposes the forces from the camera struts, thereby reducing the bending moment and deformations of the dish.

  6. MeV electrons accelerated backward along laser axis from low energy, high intensity laser-water interactions

    E-Print Network [OSTI]

    Feister, Scott; Morrison, John T; Frische, Kyle D; Orban, Chris; Ngirmang, Gregory; Handler, Abraham; Schillaci, Mark; Chowdhury, Enam A; Freeman, R R; Roquemore, W M

    2015-01-01

    Direct electron spectrum measurements show MeV energy electrons generated backward along the laser axis by a $\\lambda =$ 780 nm, 40 fs, 2.9 mJ short-pulse laser ($1.5 \\cdot 10^{18}$ W/cm$^2$). Electrons pass through a 3 mm hole in the center of the final off-axis paraboloid (OAP) and are characterized by a magnetic spectrometer. The charge collected at the OAP is hundreds of pC per pulse. A mechanism for this super-ponderomotive backward electron acceleration is discussed in the framework of 3D Particle-in-cell simulations.

  7. Modeling the Capacity of Left-Turn and Through Movement Considering Left-Turn Blockage and Spillback at Signalized Intersection with Short Left-Turn Bay 

    E-Print Network [OSTI]

    Cho, Kyoung Min

    2010-10-12

    This research presents more realistic models for left-turn and through volume capacity by taking into account the probabilistic nature of the left-turn bay blockages and spillbacks at a signalized intersection under the leading phasing scheme with a...

  8. Hydrodynamic and Structural Performance of the Transverse Horizontal Axis Water Turbine

    E-Print Network [OSTI]

    Gorban, Alexander N.

    of Darrieus vertical axis wind turbine (VAWT) through 90 to lie horizontally across a tidal flow · Stretch power (2) · Vertical axis turbines ­ Blue Energy ­ Polo ­ ... 4 other vertical axis devices · HorizontalHydrodynamic and Structural Performance of the Transverse Horizontal Axis Water Turbine Prof. Guy

  9. A Simplified Morphing Blade for Horizontal Axis Wind Turbines

    E-Print Network [OSTI]

    Boyer, Edmond

    A Simplified Morphing Blade for Horizontal Axis Wind Turbines Weijun WANG , St´ephane CARO, Fouad salinas@hotmail.com The aim of designing wind turbine blades is to improve the power capture ability by adjusting the twist of the blade's root and tip. To evaluate the performance of wind turbine blades

  10. Modeling endocrine control of the pituitary-ovarian axis: Androgenic

    E-Print Network [OSTI]

    : aohendri@ncsu.edu 1 #12;Abstract Mathematical models of the hypothalamus-pituitary-ovarian axis in women. Gonadotropin-releasing hormone (GnRH) from the hypothalamus prompts the pituitary to produce follicle and on the ovaries. Pulses of gonadotropin-releasing hormone (GnRH) produced by the hypothalamus on a time scale

  11. Cosmic strings in $f\\left(R,L_m\\right)$ gravity

    E-Print Network [OSTI]

    Tiberiu Harko; Matthew J. Lake

    2015-09-27

    We consider Kasner-type static, cylindrically symmetric interior string solutions in the $f\\left(R,L_m\\right)$ theory of modified gravity. The physical properties of the string are described by an anisotropic energy-momentum tensor satisfying the condition $T_t^t=T_z^z$; that is, the energy density of the string along the $z$-axis is equal to minus the string tension. As a first step in our study we obtain the gravitational field equations in the $f\\left(R,L_m\\right)$ theory for a general static, cylindrically symmetric metric, and then for a Kasner-type metric, in which the metric tensor components have a power law dependence on the radial coordinate $r$. String solutions in two particular modified gravity models are investigated in detail. The first is the so-called "exponential" modified gravity, in which the gravitational action is proportional to the exponential of the sum of the Ricci scalar and matter Lagrangian, and the second is the "self-consistent model", obtained by explicitly determining the gravitational action from the field equations under the assumption of a power law dependent matter Lagrangian. In each case, the thermodynamic parameters of the string, as well as the precise form of the matter Lagrangian, are explicitly obtained.

  12. DARHT Axis-I Diode Simulations II: Geometrical Scaling

    SciTech Connect (OSTI)

    Ekdahl, Carl A. Jr.

    2012-06-14

    Flash radiography of large hydrodynamic experiments driven by high explosives is a venerable diagnostic technique in use at many laboratories. Many of the largest hydrodynamic experiments study mockups of nuclear weapons, and are often called hydrotests for short. The dual-axis radiography for hydrodynamic testing (DARHT) facility uses two electron linear-induction accelerators (LIA) to produce the radiographic source spots for perpendicular views of a hydrotest. The first of these LIAs produces a single pulse, with a fixed {approx}60-ns pulsewidth. The second axis LIA produces as many as four pulses within 1.6-{micro}s, with variable pulsewidths and separation. There are a wide variety of hydrotest geometries, each with a unique radiographic requirement, so there is a need to adjust the radiographic dose for the best images. This can be accomplished on the second axis by simply adjusting the pulsewidths, but is more problematic on the first axis. Changing the beam energy or introducing radiation attenuation also changes the spectrum, which is undesirable. Moreover, using radiation attenuation introduces significant blur, increasing the effective spot size. The dose can also be adjusted by changing the beam kinetic energy. This is a very sensitive method, because the dose scales as the {approx}2.8 power of the energy, but it would require retuning the accelerator. This leaves manipulating the beam current as the best means for adjusting the dose, and one way to do this is to change the size of the cathode. This method has been proposed, and is being tested. This article describes simulations undertaken to develop scaling laws for use as design tools in changing the Axis-1 beam current by changing the cathode size.

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

    SciTech Connect (OSTI)

    Berg, D.E.

    1996-12-31

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

  14. c. Spin Axis Position To evaluate whether Saturn could be in the resonance, its spin axis must be located with

    E-Print Network [OSTI]

    Hamilton, Douglas P.

    ascension and declination of s with respect to the equator and equinox at epoch J2000.0 are 40.595° and 83.538° respectively (Yoder 1995). Rotating about the vernal equinox by the Earth's obliquity, 23.439° (Yoder 1995), gives s with respect to the ecliptic and equinox as TABLE II: Coordinates of Saturn Spin Axis, j = 18

  15. Bicycles and Left-Right Tours in Locally Finite Graphs

    E-Print Network [OSTI]

    Diestel, Reinhard

    Bicycles and Left-Right Tours in Locally Finite Graphs von Melanie Win Myint, M. S. Dem Department-Right Tours 29 6 LRTs Generate the Bicycle Space 43 7 The ABL Planarity Criterion 53 8 Pedestrian Graphs 69 bicycles and some other concepts they relate to, such as left- right tours and pedestrian graphs

  16. Percutaneous Radiofrequency Ablation for the Treatment of Liver Neoplasms in the Caudate Lobe Left of the Vena Cava: Electrode Placement Through the Left Lobe of the Liver Under CT-Fluoroscopic Guidance

    SciTech Connect (OSTI)

    Yamakado, Koichiro, E-mail: yama@clin.medic.mie-u.ac.jp; Nakatsuka, Atsuhiro; Akeboshi, Masao; Takaki, Haruyuki; Takeda, Kan [Mie University School of Medicine, Department of Radiology (Japan)

    2005-06-15

    Five hepatocellular carcinomas and one liver metastasis located in the caudate lobe left of the inferior vena cava were successfully treated by radiofrequency (RF) ablation by placing the RF electrode into each tumor through the left lobe of the liver under the CT-fluoroscopic guidance. All tumors were free of enhancement on dynamic contrast-enhanced CT during the mean follow-up period of 6.3 months. There were no major complications related to the procedures.

  17. Tuning the DARHT Axis-II linear induction accelerator focusing

    SciTech Connect (OSTI)

    Ekdahl, Carl A. [Los Alamos National Laboratory

    2012-04-24

    Flash radiography of large hydrodynamic experiments driven by high explosives is a well-known diagnostic technique in use at many laboratories, and the Dual-Axis Radiography for Hydrodynamic Testing (DARHT) facility at Los Alamos produces flash radiographs of large hydrodynamic experiments. Two linear induction accelerators (LIAs) make the bremsstrahlung radiographic source spots for orthogonal views of each test. The 2-kA, 20-MeV Axis-I LIA creates a single 60-ns radiography pulse. The 1.7-kA, 16.5-MeV Axis-II LIA creates up to four radiography pulses by kicking them out of a longer pulse that has a 1.6-{mu}s flattop. The Axis-II injector, LIA, kicker, and downstream transport (DST) to the bremsstrahlung converter are described. Adjusting the magnetic focusing and steering elements to optimize the electron-beam transport through an LIA is often called 'tuning.' As in all high-current LIAs, the focusing field is designed to be as close to that of the ideal continuous solenoid as physically possible. In ideal continuous solenoidal transport a smoothly varying beam size can easily be found for which radial forces balance, and the beam is said to be 'matched' to the focusing field. A 'mismatched' beam exhibits unwanted oscillations in size, which are a source of free energy that contributes to emittance growth. This is undesirable, because in the absence of beam-target effects, the radiographic spot size is proportional to the emittance. Tuning the Axis-II LIA is done in two steps. First, the solenoidal focusing elements are set to values designed to provide a matched beam with little or no envelope oscillations, and little or no beam-breakup (BBU) instability growth. Then, steering elements are adjusted to minimize the motion of the centroid of a well-centered beam at the LIA exit. This article only describes the design of the tune for the focusing solenoids. The DARHT Axis-II LIA was required to be re-tuned after installing an accelerator cell to replace a failed solenoid in March of 2012. We took advantage of this opportunity to improve the design of the focusing tune with better models of the remaining partially failed solenoids, better estimates of beam initial conditions, and better values for pulsed-power voltages. As with all previous tunes for Axis-II, this one incorporates measures to mitigate beam-breakup (BBU) instability, image displacement instability (IDI), corkscrew (sweep), and emittance growth. Section II covers the general approach to of design of focusing solenoid tunes for the DARHT Axis-2 LIA. Section III explains the specific requirements and simulations needed to design the tune for the injector, which includes the thermionic electron source, diode, and six induction cells. Section IV explains the requirements and simulations for tuning the main accelerator, which consists of 68 induction cells. Finally, Section V explores sensitivity of the tune to deviations of parameters from nominal, random variations, and uncertainties in values. Four appendices list solenoid settings for this new tune, discuss comparisons of different simulation codes, show halo formation in mismatched beams, and present a brief discussion of the beam envelope equation, which is the heart of the method used to design LIA solenoid tunes.

  18. On the spin-axis dynamics of a Moonless Earth

    SciTech Connect (OSTI)

    Li, Gongjie; Batygin, Konstantin

    2014-07-20

    The variation of a planet's obliquity is influenced by the existence of satellites with a high mass ratio. For instance, Earth's obliquity is stabilized by the Moon and would undergo chaotic variations in the Moon's absence. In turn, such variations can lead to large-scale changes in the atmospheric circulation, rendering spin-axis dynamics a central issue for understanding climate. The relevant quantity for dynamically forced climate change is the rate of chaotic diffusion. Accordingly, here we re-examine the spin-axis evolution of a Moonless Earth within the context of a simplified perturbative framework. We present analytical estimates of the characteristic Lyapunov coefficient as well as the chaotic diffusion rate and demonstrate that even in absence of the Moon, the stochastic change in Earth's obliquity is sufficiently slow to not preclude long-term habitability. Our calculations are consistent with published numerical experiments and illustrate the putative system's underlying dynamical structure in a simple and intuitive manner.

  19. Z-Axis Tipper Electromagnetics | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia:Illinois:WizardYates County, NewYorktownZ-Axis Tipper

  20. Right Handed Quark Mixing in Left-Right Symmetric Theory

    E-Print Network [OSTI]

    Goran Senjanovi?; Vladimir Tello

    2015-01-26

    We give exact formulas for the right-handed analog of the CKM matrix in the minimal Left-Right symmetric theory, for the case when the Left-Right symmetry is generalized Parity as in the original version of the theory. We derive its explicit form and give a physical reason for the known and surprising fact that the right-handed mixing angles are close in value to the CKM ones, in spite of the Left-Right symmetry being badly broken in nature. We exemplify our results on the production of the right-handed charged gauge boson and the computation of the neutral K meson mass difference.

  1. Signatures of left-right symmetry at high energies

    E-Print Network [OSTI]

    Jukka Maalampi

    1993-10-17

    We discuss various experimental tests of the left-right symmetric model possible to perform in the next generation linear colliders. We consider processes which provide sensitive probes of the basic ingredients of the model: right-handed gauge bosons, right-handed Majorana neutrinos, lepton number violating interactions and triplet Higgs scalars. A supersymmetric version of the left-right model is also studied and some distinctive experimental tests for it is proposed. One of the main messages of this talk is to emphasize the usefulness of the collision modes $e^-e^-$, $e^-\\gamma$ and $\\gamma\\gamma$ for the tests of the left-right symmetric model.

  2. Supplementary Table 1: This table lists the order of stimuli along the x-axis of each tuning curve. Stimuli are listed in order from left to

    E-Print Network [OSTI]

    Wilson, Rachel

    -octanone 10 geranyl acetate 5 trans-2-hexenal 10 butyric acid 4 isoamyl acetate 10 cis-vaccenyl acetate 7-hexenal 6 geranyl acetate 8 benzaldehyde 4 butyric acid 7 ethyl butyrate 4 methyl salicylate 6 2-octanone 4-methyl phenol 5 trans-2-hexenal 6 butyric acid 8 -valerolactone 5 isoamyl acetate 14 1-butanol 8

  3. Novel electromagnetic radiation in Left-Handed materials

    E-Print Network [OSTI]

    Lu, Jie, Ph. D. Massachusetts Institute of Technology

    2006-01-01

    In this thesis, Cerenkov radiation of a moving charged particle inside a Left-Handed material (LHM) is studied through both theory and numerical simulations. A LHM is a material whose permittivity and permeability have ...

  4. Transmission and reflection properties of layered left-handed materials

    E-Print Network [OSTI]

    Chen, Jianbing James, 1971-

    2007-01-01

    This thesis is concerned with the reflection and transmission properties of layered left-handed materials (LHM). In particular, the reflection properties of (LHM) slabs are studied for the Goos-Hanchen (GH) lateral shift ...

  5. SEGMENTATION OF THE EVOLVING LEFT VENTRICLE BY LEARNING THE DYNAMICS

    E-Print Network [OSTI]

    Çetin, Müjdat

    the left ventricle's proper func- tion, pumping oxygenated blood to the entire body, is vital for nor- mal onto principal components. We use nonparametric, information-theoretic methods to learn statistical

  6. Torque ripple in a Darrieus, vertical axis wind turbine

    SciTech Connect (OSTI)

    Reuter, R.C. Jr.

    1980-09-01

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

  7. Space variations in axis height of the jet stream core 

    E-Print Network [OSTI]

    Leutwyler, Cooke Hearon

    1965-01-01

    height, of 55 mb be- tween Model I (troughs) and Model II (ridges). However, the present models of the jet stream do not adequately describe the way a jet stream axis varies in height at a given time. The average presented by Reiter (1958... the Ridge cases, the standard deviation was smaller upstream from the reference height than it was downstream. Therefore the mean curves are more representative and useful as models upstream than they are downstream. C HAP TER I I I HEIGHT VARIATIONS...

  8. American Institute of Aeronautics and Astronautics Aeroelastic Modeling of Large Offshore Vertical-axis Wind

    E-Print Network [OSTI]

    Vertical-axis Wind Turbines: Development of the Offshore Wind Energy Simulation Toolkit Brian C. Owens will argue, the vertical-axis wind turbine (VAWT)2 has the potential to alleviate many challenges encountered advantages over the horizontal-axis wind turbine configuration in the offshore arena. VAWTs, however

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

    E-Print Network [OSTI]

    Victoria, University of

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

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

    E-Print Network [OSTI]

    McCalley, James D.

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

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

    E-Print Network [OSTI]

    Colonius, Tim

    Coriolis Effect on Dynamic Stall in a Vertical Axis Wind Turbine at Moderate Reynolds Number Hsieh-scale Reynolds number in order to investigate the sep- arated flow occurring on a vertical-axis wind turbine SSPM the sinusoidal surging-pitching motion VAWT vertical axis wind turbine I. Introduction Vertical

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

    E-Print Network [OSTI]

    Leu, Tzong-Shyng "Jeremy"

    1 WIND-TUNNEL STUDY ON AERODYNAMIC PERFORMANCE OF SMALL VERTICAL-AXIS WIND TURBINES J. J. Miau*1 were carried out to study the aerodynamic performance of three vertical axis wind turbines (VAWTs vertical-axis wind turbines (VAWT) have attracted a great deal of attention, because of their potential

  13. A Low Order Model for Vertical Axis Wind Turbines Isaac M. Asher

    E-Print Network [OSTI]

    Peraire, Jaime

    A Low Order Model for Vertical Axis Wind Turbines Isaac M. Asher , Mark Drela and Jaime Peraire and performance prediction of vertical axis wind turbines is presented. The model uses a 2D hybrid dynamic vortex perpendicular. z perpendicular to the plane (spanwise direction). I. Introduction Darrieus-type vertical axis

  14. Experimental and numerical investigation of an optimized airfoil for vertical axis wind turbines

    E-Print Network [OSTI]

    Experimental and numerical investigation of an optimized airfoil for vertical axis wind turbines and numerical verification of the per- formance of a new airfoil design for lift driven vertical-axis wind-turbines-driven vertical-axis wind-turbines VAWTs, with particular attention to floating installations (see Akimoto et al

  15. Off-Axis Undulator Radiation for CLIC Drive Beam Diagnostics

    E-Print Network [OSTI]

    Jeff, A; Welsch, CP

    2013-01-01

    The Compact LInear Collider (CLIC) will use a novel acceleration scheme in which energy extracted from a very intense beam of relatively low-energy electrons (the Drive Beam) is used to accelerate a lower intensity Main Beam to very high energy. The high intensity of the Drive Beam, with pulses of more than 1015 electrons, poses a challenge for conventional profile measurements such as wire scanners. Thus, new non-invasive profile measurements are being investigated. In this paper we propose the use of relatively inexpensive permanent-magnet undulators to generate off-axis visible Synchrotron Radiation from the CLIC Drive Beam. The field strength and period length of the undulator should be designed such that the on-axis undulator wavelength is in the ultra-violet. A smaller but still useable amount of visible light is then generated in a hollow cone. This light can be reflected out of the beam pipe by a ring-shaped mirror placed downstream and imaged on a camera. In this contribution, results of SRW and ZEMA...

  16. Eight Pulse Performance of DARHT Axis II - Preliminary Results

    SciTech Connect (OSTI)

    Schulze, Martin E.

    2015-12-08

    The DARHT-II accelerator produces a 1.65-kA, 17-MeV beam in a 1600-ns pulse. Standard operation of the DARHT Axis II accelerator involves extracting four short pulses from the 1.6 us long macro-pulse produced by the LIA. The four short pulses are extracted using a fast kicker in combination with a quadrupole septum magnet and then transported for several meters to a high Z material target for conversion to x-rays for radiography. The ability of the DARHT Axis 2 kicker to produce more than the standard four pulse format has been previously demonstrated. This capability was developed to study potential risks associated with beam transport during an initial commissioning phase at low energy (8 MeV) and low current (1.0 kA).The ability of the kicker to deliver more than four pulses to the target has been realized for many years. This note describes the initial results demonstrating this capability.

  17. Supplemental Fig. S1: Angle maps (left hemisphere). The color overlay on the inflated occipital-parietal cortical surface shows the

    E-Print Network [OSTI]

    Wandell, Brian A.

    posterior dorsal Supplemental Fig. S1: Angle maps (left hemisphere). The color overlay TO-1 TO-2 V3d LO-1 LO-2 TO-1 TO-2 V3d #12;12° Supplemental Fig. S2: Eccentricity maps (left effective stimulus eccentricity. Other aspects as in Supplemental Fig. S1. S1 S2 S3 S4 S5 S7 S6 LO-1 LO-2 TO

  18. IntroductionIntroduction The use of small scale vertical axis wind turbinesThe use of small scale vertical axis wind turbines

    E-Print Network [OSTI]

    Tullis, Stephen

    IntroductionIntroduction The use of small scale vertical axis wind turbinesThe use of small scale vertical axis wind turbines (VAWT) is being studied at McMaster University using(VAWT) is being studied at McMaster University using a prototype wind turbine provided bya prototype wind turbine provided

  19. Refine your search Select options from the menu on the left hand

    E-Print Network [OSTI]

    Yener, Aylin

    ://psu.summon.serialssolutions.comhttp://psu.summon.serialssolutions.com F I N A L LY : RESEARCH AS EASYAS 1-2-3 #12;1 Enter search term into search box. 2 Refine results relevant articles were published in that year. Include or Exclude subject terms from your searchRefine your search Select options from the menu on the left hand side of the results screen

  20. Dual-axis resonance testing of wind turbine blades

    DOE Patents [OSTI]

    Hughes, Scott; Musial, Walter; White, Darris

    2014-01-07

    An apparatus (100) for fatigue testing test articles (104) including wind turbine blades. The apparatus (100) includes a test stand (110) that rigidly supports an end (106) of the test article (104). An actuator assembly (120) is attached to the test article (104) and is adapted for substantially concurrently imparting first and second forcing functions in first and second directions on the test article (104), with the first and second directions being perpendicular to a longitudinal axis. A controller (130) transmits first and second sets of displacement signals (160, 164) to the actuator assembly (120) at two resonant frequencies of the test system (104). The displacement signals (160, 164) initiate the actuator assembly (120) to impart the forcing loads to concurrently oscillate the test article (104) in the first and second directions. With turbine blades, the blades (104) are resonant tested concurrently for fatigue in the flapwise and edgewise directions.

  1. Dynamic behavior analysis for a six axis industrial machining robot

    E-Print Network [OSTI]

    Bisu, Claudiu-Florinel; Gérard, Alain; K'Nevez, Jean-Yves

    2012-01-01

    The six axis robots are widely used in automotive industry for their good repeatability (as defined in the ISO92983) (painting, welding, mastic deposition, handling etc.). In the aerospace industry, robot starts to be used for complex applications such as drilling, riveting, fiber placement, NDT, etc. Given the positioning performance of serial robots, precision applications require usually external measurement device with complexes calibration procedure in order to reach the precision needed. New applications in the machining field of composite material (aerospace, naval, or wind turbine for example) intend to use off line programming of serial robot without the use of calibration or external measurement device. For those applications, the position, orientation and path trajectory precision of the tool center point of the robot are needed to generate the machining operation. This article presents the different conditions that currently limit the development of robots in robotic machining applications. We ana...

  2. Neutrinoless Double Beta Decay: Low Left-Right Symmetry Scale?

    E-Print Network [OSTI]

    Miha Nemevsek; Fabrizio Nesti; Goran Senjanovic; Vladimir Tello

    2011-12-20

    Experiments in progress may confirm a nonzero neutrinoless double beta decay rate in conflict with the cosmological upper limit on neutrino masses and thus require new physics beyond the Standard Model. A natural candidate is the Left-Right symmetric theory, which led originally to neutrino mass and the seesaw mechanism. In the absence of cancelations of large Dirac Yukawa couplings, we show how such a scenario would require a low scale of Left-Right symmetry breaking roughly below 10 TeV, tantalizingly close to the LHC reach.

  3. Left-right spin asymmetry in ? N? ? h ?

    SciTech Connect (OSTI)

    Gamberg, Leonard; Kang, Zhong -Bo; Metz, Andreas; Pitonyak, Daniel; Prokudin, Alexei

    2014-10-01

    We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute in twist-3 collinear factorization at leading order in perturbation theory. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. However, the magnitude of the computed asymmetries tends to be larger than the data. Potential reasons for this outcome are identified. We also give predictions for future experiments and highlight in particular the unique opportunities at an Electron Ion Collider.

  4. Left-right spin asymmetry in l N ? ? h X

    SciTech Connect (OSTI)

    Gamberg, Leonard; Kang, Zhong-Bo; Metz, Andreas; Pitonyak, Daniel; Prokudin, Alexei

    2014-10-01

    We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute in twist-3 collinear factorization at leading order in perturbation theory. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. However, the magnitude of the computed asymmetries tends to be larger than the data. Potential reasons for this outcome are identified. We also give predictions for future experiments and highlight in particular the unique opportunities at an Electron Ion Collider.

  5. Left-right spin asymmetry in $\\ell N^\\uparrow \\to h X$

    E-Print Network [OSTI]

    Leonard Gamberg; Zhong-Bo Kang; Andreas Metz; Daniel Pitonyak; Alexei Prokudin

    2014-10-10

    We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute in twist-3 collinear factorization at leading order in perturbation theory. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. However, the magnitude of the computed asymmetries tends to be larger than the data. Potential reasons for this outcome are identified. We also give predictions for future experiments and highlight in particular the unique opportunities at an Electron Ion Collider.

  6. Phonon mean free path of graphite along the c-axis

    SciTech Connect (OSTI)

    Wei, Zhiyong; Yang, Juekuan; Chen, Weiyu; Bi, Kedong; Chen, Yunfei, E-mail: yunfeichen@seu.edu.cn [Jiangsu Key Laboratory for Design and Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering, Southeast University, Nanjing 210096 (China); Li, Deyu, E-mail: deyu.li@vanderbilt.edu [Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37235-1592 (United States)

    2014-02-24

    Phonon transport in the c-axis direction of graphite thin films has been studied using non-equilibrium molecular dynamics (MD) simulation. The simulation results show that the c-axis thermal conductivities for films of thickness ranging from 20 to 500 atomic layers are significantly lower than the bulk value. Based on the MD data, a method is developed to construct the c-axis thermal conductivity as an accumulation function of phonon mean free path (MFP), from which we show that phonons with MFPs from 2 to 2000?nm contribute ?80% of the graphite c-axis thermal conductivity at room temperature, and phonons with MFPs larger than 100?nm contribute over 40% to the c-axis thermal conductivity. These findings indicate that the commonly believed value of just a few nanometers from the simple kinetic theory drastically underestimates the c-axis phonon MFP of graphite.

  7. Aberrant Left Inferior Bronchial Artery Originating from the Left Gastric Artery in a Patient with Acute Massive Hemoptysis

    SciTech Connect (OSTI)

    Jiang, Sen Sun, Xi-Wen Yu, Dong Jie, Bing

    2013-10-15

    Massive hemoptysis is a life-threatening condition, and the major source of bleeding in this condition is the bronchial circulation. Bronchial artery embolization is a safe and effective treatment for controlling hemoptysis. However, the sites of origin of the bronchial arteries (BAs) have numerous anatomical variations, which can result in a technical challenge to identify a bleeding artery. We present a rare case of a left inferior BA that originated from the left gastric artery in a patient with recurrent massive hemoptysis caused by bronchiectasis. The aberrant BA was embolized, and hemoptysis has been controlled for 8 months.

  8. LEFT CELLS IN CERTAIN COXETER GROUPS Jian-yi Shi

    E-Print Network [OSTI]

    Shi, Jian Yi

    LEFT CELLS IN CERTAIN COXETER GROUPS Jian-yi Shi East China Normal University Dedicated to Professor Hsiao-Fu Duan on His Eightieth Birthday Abstract. A survey is given on the achievements of KL-cell, right and two-sided cells. Thus the description of cells of W and the structural study of these cells

  9. This page intentionally left blank HANDBOOK OF STATISTICS

    E-Print Network [OSTI]

    McLeod, Ian

    This page intentionally left blank #12;HANDBOOK OF STATISTICS VOLUME 30 #12;Handbook of Statistics by visiting the Elsevier web site at http://elsevier.com/locate/permissions, and selecting Obtaining permission to use Elsevier material. Notice No responsibility is assumed by the publisher for any injury and

  10. Multivariate Tests Based on Left-Spherically Distributed Linear Scores

    E-Print Network [OSTI]

    Magdeburg, Universität

    Multivariate Tests Based on Left-Spherically Distributed Linear In this paper, a method for multivariate testing based on low-dimensional, data- dependent, linear scores approaches. In a natural way, standard problems of multivari- ate analysis thus induce the occurrence

  11. Modeling Left Ventricle Wall Motion Using Tagged Magnetic Resonance Imaging

    E-Print Network [OSTI]

    Alenezy, Mohammed D.

    2009-04-17

    A two-parameter computational model is proposed for the study of the regional motion of the left ventricle (LV) wall using tagged magnetic resonance imaging (tMRI) data. In this model, the LV wall motion is mathematically decomposed into two...

  12. Termination of Narrowing in Left-Linear Constructor Systems

    E-Print Network [OSTI]

    Vidal, Germán

    [24], partial evaluation [1, 48], refining methods for proving the termination of rewriting [8, 9Termination of Narrowing in Left-Linear Constructor Systems Germ´an Vidal Technical University.g., it forms the basis of functional logic languages). Surprisingly, the termination of narrowing has been

  13. Termination of Narrowing in Left-Linear Constructor Systems

    E-Print Network [OSTI]

    Vidal, Germán

    ], model checking [17], partial evaluation [1, 32], refining methods for proving the terminationTermination of Narrowing in Left-Linear Constructor Systems Germ´an Vidal Technical University in different contexts, ranging from the- orem proving to language design. Surprisingly, the termination of nar

  14. Using Entrez Utilities Web Service with Apache Axis2 for Java Creating a Web Service Client Application

    E-Print Network [OSTI]

    Levin, Judith G.

    Using Entrez Utilities Web Service with Apache Axis2 for Java Creating a Web Service Client Entrez Utilities Web Service using Axis2 for Java. Preinstalled Software You should have Apache Axis2.sh shell script file on Linux) in the bin directory of Axis2 installation. You will use it to generate Web

  15. Control system for a vertical-axis windmill

    DOE Patents [OSTI]

    Brulle, R.V.

    1981-09-03

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

  16. Inferior Pancreaticoduodenal Artery Aneurysms Associated with Occlusive Lesions of the Celiac Axis: Diagnosis, Treatment Options, Outcomes, and Review of the Literature

    SciTech Connect (OSTI)

    Flood, Karen Nicholson, Anthony A.

    2013-06-15

    Purpose. To describe the presentation, treatment, and outcomes for 14 patients with aneurysms of the inferior pancreaticoduodenal arteries associated with occlusive lesions of the celiac axis, and to review the literature for similar cases. Methods, Over a period of 12 years, 14 patients (10 women and 4 men) ranging in age from 26 to 50 (mean 46) years were demonstrated to have aneurysms of the inferior pancreaticoduodenal artery origin associated with stenosis or occlusion of the celiac axis. All patients were treated by a combination of surgery and interventional radiology. Results. Outcome data collected between 3 months and 4 years (mean 2 years) demonstrated that all aneurysms remained excluded, and all 14 patients were well. The 49 case reports in the literature confirm the findings of this cohort. Conclusion. In inferior pancreaticoduodenal artery aneurysm resulting from celiac occlusive disease, endovascular treatment is best achieved by stenting the celiac axis and/or embolizing the aneurysm when necessary.

  17. Multidisciplinary Design Optimization for Glass-Fiber Epoxy-Matrix Composite 5 MW Horizontal-Axis

    E-Print Network [OSTI]

    Grujicic, Mica

    .S. energy needs will be met by various onshore and offshore wind-farms (a collection of wind turbines to as the horizontal axis wind turbine (HAWT). A photograph of an offshore wind turbine is pro- vided in Fig. 1. All-Axis Wind-Turbine Blades M. Grujicic, G. Arakere, B. Pandurangan, V. Sellappan, A. Vallejo, and M. Ozen

  18. Regulation Of Fshr And SF-1 In The Hypothalamus-Pituitary-Gonadal (HPG) Axis.

    E-Print Network [OSTI]

    George, Jitu Wilson

    2013-08-31

    Regulation Of Fshr And SF-1 In The Hypothalamus-Pituitary-Gonadal (HPG) Axis. By Jitu W. George Submitted to the graduate degree program in Molecular and Integrative Physiology and the Graduate Faculty of the University of Kansas in partial... dissertation: Regulation Of Fshr And SF-1 In The Hypothalamus-Pituitary-Gonadal (HPG) Axis. ________________________________ Leslie L...

  19. Near wake properties of horizontal axis marine current L. Myers and A.S. Bahaj

    E-Print Network [OSTI]

    Quartly, Graham

    1 Near wake properties of horizontal axis marine current turbines L. Myers and A.S. Bahaj-scale horizontal axis turbine has been have been measured in a large water channel facility. A downstream map with different vertical shear and turbulence distributions. Offshore wind farms are perhaps the most closely

  20. Response of a Vertical Axis Wind Turbine to Time Varying Wind Conditions found within the Urban

    E-Print Network [OSTI]

    Tullis, Stephen

    Response of a Vertical Axis Wind Turbine to Time Varying Wind Conditions found within the Urban, 2010 PP 389­401 389 ABSTRACT Experimental testing of a vertical axis wind turbine within the urban of the turbine. Temporal variation of the wind with respect to the direction and velocity fluctuations

  1. CFD Simulation of Dynamic Thrust and Radial Forces on a Vertical Axis Wind Turbine Blade

    E-Print Network [OSTI]

    Tullis, Stephen

    CFD Simulation of Dynamic Thrust and Radial Forces on a Vertical Axis Wind Turbine Blade K. Mc vibration source of a small scale vertical axis wind turbine. The dynamic loading on the blades of the turbine, as they rotate about the central shaft and travel through a range of relative angles of attack

  2. Barium ferrite thin film media with perpendicular c-axis orientation and small grain size

    E-Print Network [OSTI]

    Laughlin, David E.

    Barium ferrite thin film media with perpendicular c-axis orientation and small grain size Zailong, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 Barium ferrite thin films with perpendicular c conditions. The c-axis orientation of barium ferrite thin films is most sensitive to the oxygen partial

  3. Two-axis MEMS scanner with transfer-printed high-reflectivity, broadband monolithic silicon

    E-Print Network [OSTI]

    Rogers, John A.

    Two-axis MEMS scanner with transfer-printed high-reflectivity, broadband monolithic silicon@illinois.edu Abstract: We present a two-axis electrostatic MEMS scanner with high- reflectivity monolithic. The reflective surfaces of the MEMS scanner are transfer-printed PC mirrors with low polarization dependence, low

  4. Kilovoltage cone-beam CT imaging dose during breast radiotherapy: A dose comparison between a left and right breast setup

    SciTech Connect (OSTI)

    Quinn, Alexandra; Holloway, Lois; Begg, Jarrad; Nelson, Vinod; Metcalfe, Peter

    2014-07-01

    The purpose of this study was to investigate the delivered dose from a kilovoltage cone-beam computed tomography (kV-CBCT) acquired in breast treatment position for a left and right breast setup. The dose was measured with thermoluminescent dosimeters positioned within a female anthropomorphic phantom at organ locations. Imaging was performed on an Elekta Synergy XVI system with the phantom setup on a breast board. The image protocol involved 120 kVp, 140 mAs, and a 270° arc rotation clockwise 0° to 270° for the left breast setup and 270° to 180° for the right breast setup (maximum arc rotations possible). The dose delivered to the left breast, right breast, and heart was 5.1 mGy, 3.9 mGy, and 4.0 mGy for the left breast setup kV-CBCT, and 6.4 mGy, 6.0 mGy, and 4.8 mGy for the right breast setup kV-CBCT, respectively. The rotation arc of the kV-CBCT influenced the dose delivered, with the right breast setup kV-CBCT found to deliver a dose of up to 4 mGy or 105% higher to the treated breast?s surface in comparison with the left breast setup. This is attributed to the kV-CBCT source being more proximal to the anterior of the phantom for a right breast setup, whereas the source is more proximal to the posterior of the patient for a left-side scan.

  5. The Role of Anti-Phase Domains in InSb-Based Structures Grown on On-Axis and Off-Axis Ge Substrates

    SciTech Connect (OSTI)

    Debnath, M. C.; Mishima, T. D.; Santos, M. B.; Hossain, K.; Holland, O. W.

    2011-12-26

    Anti-phase domains form in InSb epilayers and InSb/Al{sub 0.20}In{sub 0.80}Sb single quantum wells when grown upon on-axis (001) Ge substrates by molecular beam epitaxy. Domain formation is partially suppressed through growth on Ge substrates with surfaces that are several degrees off the (001) or (211) axis. By using off-axis Ge substrates, room-temperature electron mobilities increased to {approx}60,000 cm{sup 2}/V-s and {approx}14,000 cm{sup 2}/V-s for a 4.0-{mu}m-thick InSb epilayer and a 25-nm InSb quantum well, respectively.

  6. Annual performance prediction for off-axis aligned Lugo heliostats at Solar Two

    SciTech Connect (OSTI)

    Jones, S.A.

    1996-02-01

    The DELSOL computer code was used to model the annual Performance for numerous off-axis alignments of the Lugo heliostats located at the Solar Two site in Dagget, California. Recommended canting times are presented for the Lugo heliostats based upon their location in the field. Predicted annual performance of an off-axis alignment was actually higher than for on-axis alignment in some cases, and approximately equal if the recommended times are used. The annual performances of Solar One heliostats located nearby were also calculated, and illustrated the poorer performance expected of the Lugo heliostats.

  7. SEP Success Story: Turkey Hill Dairy: Where Energy is Not Left...

    Office of Environmental Management (EM)

    Turkey Hill Dairy: Where Energy is Not Left Flapping in the Wind SEP Success Story: Turkey Hill Dairy: Where Energy is Not Left Flapping in the Wind December 21, 2011 - 11:57am...

  8. Four Days Left to Buy Energy-Efficient Products for a 2009 Tax...

    Energy Savers [EERE]

    Four Days Left to Buy Energy-Efficient Products for a 2009 Tax Credit Four Days Left to Buy Energy-Efficient Products for a 2009 Tax Credit December 28, 2009 - 7:30am Addthis...

  9. Drilling Burr Control Chart -Adding a Material Property Axis

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Dornfeld, David A

    2005-01-01

    the hypothesized 3-D drilling burr control chart. REFERENCESOptimization and Control of Drilling Burr Formation inOptimization and Control of Drilling Burr Formation of AISI

  10. Repulsive and restoring Casimir forces with left-handed materials

    E-Print Network [OSTI]

    Yaping Yang; Ran Zeng; Shutian Liu; Hong Chen; Shiyao Zhu

    2008-03-24

    We investigate repulsive Casimir force between slabs containing left-handed materials with controllable electromagnetic properties. The sign of Casimir force is determined by the electric and magnetic properties of the materials, and it is shown that the formation of the repulsive force is related to the wave impedances of two slabs. The sign change of the Casimir force as a function of the distance is studied. Special emphasis is put on the restoring Casimir force which may be found to exist between perfectly conducting material and metamaterial slabs. This restoring force is a natural power for the system oscillation in vacuum and also can be used for system stabilization.

  11. Endovascular Treatment of Two Pseudoaneurysms Originating From the Left Ventricle

    SciTech Connect (OSTI)

    Cwikiel, Wojciech, E-mail: wcwikiel@gmail.com; Keussen, Inger [Skane University Hospital, Department of Radiology (Sweden)] [Skane University Hospital, Department of Radiology (Sweden); Gustafsson, Ronny; Mokhtari, Arash [Skane University Hospital, Department of Thoracic Surgery (Sweden)] [Skane University Hospital, Department of Thoracic Surgery (Sweden)

    2013-12-15

    A 67-year-old woman resented with an acute type A aortic dissection, which was treated surgically with aortic valve replacement as a composite graft with reimplantation of the coronary arteries. At the end of surgery, a left-ventricular venting catheter was placed through the apex and closed with a buffered suture. Consecutive computed tomography (CT) examinations verified a growing apex pseudoaneurysm. Communication between the ventricle and the pseudoaneurysm was successfully closed with an Amplatz septal plug by the transfemoral route. Follow-up CT showed an additional pseudoaneurysm, which also was successfully closed using the same method.

  12. QUANTITATIVE EVALUATION OF LEFT VENTRICULAR ROTATIONAL MECHANICS USING MAGNETIC RESONANCE IMAGING

    E-Print Network [OSTI]

    Wang, Zhe

    2015-01-01

    qualitative and quantitative assessment of left ventricular (LV) myocardial deformation in both research and clinical settings. This thesis

  13. Transmission losses in left-handed materials P. Markos,* I. Rousochatzakis, and C. M. Soukoulis

    E-Print Network [OSTI]

    Transmission losses in left-handed materials P. Markos,* I. Rousochatzakis, and C. M. Soukoulis Received 2 June 2002; published 1 October 2002 We numerically analyze the origin of the transmission losses in left-handed structures. Our data confirms that left-handed structures can have very good transmission

  14. Development of novel high-performance six-axis magnetically levitated instruments for nanoscale applications 

    E-Print Network [OSTI]

    Verma, Shobhit

    2005-11-01

    This dissertation presents two novel 6-axis magnetic-levitation (maglev) stages that are capable of nanoscale positioning. These stages have very simple and compact structure that is advantageous to meet requirements in the next...

  15. Role of 5?-reductase type 1 in modifying anxiety, appetite and the HPA axis 

    E-Print Network [OSTI]

    Di Rollo, Emma Margaret

    2014-11-28

    Glucocorticoid excess is associated with adverse effects on a number of physiological parameters, leading to obesity, dysfunction of the hypothalamic-pituitary- adrenal (HPA) axis and behavioural changes such as anxiety ...

  16. Differential Responses of Hypothalamus-Pituitary-Adrenal Axis Immediate Early Genes to Corticosterone

    E-Print Network [OSTI]

    Spencer, Robert L.

    Differential Responses of Hypothalamus-Pituitary- Adrenal Axis Immediate Early Genes Neuroscience, Department of Psychology, University of Colorado, Boulder, Colorado 80309 The hypothalamus by daily fluctuations in activity of CRH neurons within the paraven- tricular nucleus of the hypothalamus

  17. NOVEL SINGLE-AXIS FLEXURE MECHANISM DESIGNS WITH IMPROVED BEARING STIFFNESS

    E-Print Network [OSTI]

    Awtar, Shorya

    is the Young's Modulus, I1 is the second moment of area in bending, and Y is the motion direction displacement INRODUCTION AND BACKGROUND In this paper, we present two new single-axis flexure mechanism designs

  18. Endogenous opioids and attenuated hypothalamic-pituitary-adrenal axis responses to immune challenge in pregnant rats 

    E-Print Network [OSTI]

    Russell, J. A.; Ochedalski, T; Meddle, S. L.; Ma, S.; Brunton, P. J.; Douglas, A. J.

    2005-01-01

    In late pregnant rats, the hypothalamic-pituitary-adrenal (HPA) axis is hyporesponsive to psychogenic stressors. Here, we investigated attenuated HPA responses to an immune challenge and a role for endogenous opioids. ACTH ...

  19. Content-based fused off-axis object illumination direct-to-digital holography

    DOE Patents [OSTI]

    Price, Jeffery R.

    2006-05-02

    Systems and methods are described for content-based fused off-axis illumination direct-to-digital holography. A method includes calculating an illumination angle with respect to an optical axis defined by a focusing lens as a function of data representing a Fourier analyzed spatially heterodyne hologram; reflecting a reference beam from a reference mirror at a non-normal angle; reflecting an object beam from an object the object beam incident upon the object at the illumination angle; focusing the reference beam and the object beam at a focal plane of a digital recorder to from the content-based off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; and digitally recording the content based off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis.

  20. Characterization of reactively sputtered c-axis aligned nanocrystalline InGaZnO{sub 4}

    SciTech Connect (OSTI)

    Lynch, David M.; Zhu, Bin; Ast, Dieter G.; Thompson, Michael O.; Levin, Barnaby D. A.; Muller, David A.; Greene, Raymond G.

    2014-12-29

    Crystallinity and texturing of RF sputtered c-axis aligned crystal InGaZnO{sub 4} (CAAC IGZO) thin films were quantified using X-ray diffraction techniques. Above 190?°C, nanocrystalline films with an X-ray peak at 2??=?30° (009 planes) developed with increasing c-axis normal texturing up to 310?°C. Under optimal conditions (310?°C, 10% O{sub 2}), films exhibited a c-axis texture full-width half-maximum of 20°. Cross-sectional high-resolution transmission electron microscopy confirmed these results, showing alignment variation of ±9° over a 15 × 15?nm field of view and indicating formation of much larger aligned domains than previously reported. At higher deposition temperatures, c-axis alignment was gradually lost as polycrystalline films developed.

  1. Left-right non-linear dynamical Higgs

    E-Print Network [OSTI]

    Shu, Jing

    2016-01-01

    All the possible CP-conserving non-linear operators up to the $p^4$-order in the Lagrangian expansion are analysed here for the left-right symmetric model in the non-linear electroweak chiral context coupled to a light dynamical Higgs. The low energy effects will be triggered by an emerging new physics field content in the nature, more specifically, from spin-1 resonances sourced by the straightforward extension of the SM local gauge symmetry to the larger local group $SU(2)_L\\otimes SU(2)_R\\otimes U(1)_{B-L}$. Low energy phenomenology will be altered by integrating out the resonances from the physical spectrum, being manifested through induced corrections onto the left handed operators. Such modifications are weighted by powers of the scales ratio implied by the symmetries of the model and will determine the size of the effective operator basis to be used. The recently observed diboson excess around the invariant mass 1.8-2 TeV entails a scale suppression that suggests to encode the low energy effects via a ...

  2. Left-right supersymmetry after the Higgs boson discovery

    E-Print Network [OSTI]

    Mariana Frank; Dilip Kumar Ghosh; Katri Huitu; Santosh Kumar Rai; Ipsita Saha; Harri Waltari

    2014-12-31

    We perform a thorough analysis of the parameter space of the minimal left-right supersymmetric model in agreement with the LHC data. The model contains left- and right-handed fermionic doublets, two Higgs bidoublets, two Higgs triplet representations, and one singlet, insuring a charge-conserving vacuum. We impose the condition that the model complies with the experimental constraints on supersymmetric particles masses and on the doubly-charged Higgs bosons, and require that the parameter space of the model satisfy the LHC data on neutral Higgs signal strengths at $2\\sigma$. We choose benchmark scenarios by fixing some basic parameters and scanning over the rest. The LSP in our scenarios is always the lightest neutralino. We find that the signals for $H\\to \\gamma \\gamma$ and $H \\to VV^\\star$ are correlated, while $H \\to b \\bar b$ is anti-correlated with all the other decay modes, and also that the contribution from singly-charged scalars dominate that of the doubly-charged scalars in $H\\to \\gamma \\gamma$ and $H \\to Z\\gamma$ loops, contrary to Type-II seesaw models. We also illustrate the range for mass spectrum of the LRSUSY model in light of planned measurements of the branching ratio of $H\\to \\gamma \\gamma$ to 10% level.

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

    E-Print Network [OSTI]

    Dabiri, John O.

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

  4. Design and Test of a Vertical-Axis Wind Turbine with Pitch Control J. J. Miau1,a

    E-Print Network [OSTI]

    Leu, Tzong-Shyng "Jeremy"

    Design and Test of a Vertical-Axis Wind Turbine with Pitch Control J. J. Miau1,a , S. Y. Liang2 , R, USA a jjmiau@mail.ncku.edu.tw Keywords: vertical-axis wind turbine, pitch control, wind of a small vertical-axis wind turbine. Benefits gained can be shown by the experimental and numerical results

  5. The Use of a Beryllium Hopkinson Bar to Characterize In-Axis and Cross-Axis Accelerometer Response in Shock Environments

    SciTech Connect (OSTI)

    Bateman, V.I.; Brown, F.A.

    1999-01-01

    The characteristics of a piezoresistive accelerometer in shock environments have been studied at Sandia National Laboratories in the Mechanical Shock Laboratory. A beryllium Hopkinson bar capability with diameters of 0.75 in. and 2.0 in has been developed to extend our understanding of the piezoresistive accelerometer, in two mechanical configurations, in the high frequency, high shock environments where measurements are being made. The in-axis performance of the piezoresistive accelerometer determined from measurements with a beryllium Hopkinson bar and a certified laser doppler vibrometer as the reference measurement is presented. The cross-axis performance of the accelerometer subjected to static compression on a beryllium cylinder, static strain on a steel beam, dynamic strain on a steel beam (ISA-RP 37.2, Paragraph 6.6), and compressive shocks in a split beryllium Hopkinson bar configuration is also presented. The performance of the accelerometer in a combined in-axis and cross-axis shock environment is shown for one configuration. Finally, a failure analysis conducted in cooperation with ENDEVCO gives a cause for the occasional unexplained failures that have occurred in some applications.

  6. The experimental and theoretical investigaton of a horizontal-axis wind turbine 

    E-Print Network [OSTI]

    Milburn, Robert Terrance

    1977-01-01

    THE EXPERIMENTAL AND THEORETICAL INVESTIGATION OF A HORIZONTAL-AXIS WIND TURBINE A Thesis by ROBERT TERRANCE MILBURN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE August 1977 Major Subject: Aerospace Engineering THE EXPERIMENTAL AND THEORETICAL INVESTIGATION OF A HORIZONTAL-AXIS WIND TURBINE A Thesis by ROBERT TERRANCE MILBURN Approved as to style and content by: (Chairman of Committee) (Head...

  7. Method for non-contact particle manipulation and control of particle spacing along an axis

    DOE Patents [OSTI]

    Goddard, Gregory Russ; Kaduchak, Gregory; Jett, James Hubert; Graves, Steven Wayde

    2012-09-11

    Method and system for uniformly spacing particles in a flowing system comprising suspending particles in an elongated fluid filled cavity; exposing said cavity to an axial acoustic standing wave field, wherein said axial acoustic standing wave field drives said particles to nodal and anti-nodal positions along the center axis of said cavity to result in uniformly spaced particles; and focusing said particles to the center axis of said cavity.

  8. Dual axis radiographic hydrodynamic test facility. Final environmental impact statement, Volume 2: Public comments and responses

    SciTech Connect (OSTI)

    1995-08-01

    On May 12, 1995, the U.S. Department of Energy (DOE) issued the draft Dual Axis Radiographic Hydrodynamic Test Facility Environmental Impact Statement (DARHT EIS) for review by the State of New Mexico, Indian Tribes, local governments, other Federal agencies, and the general public. DOE invited comments on the accuracy and adequacy of the draft EIS and any other matters pertaining to their environmental reviews. The formal comment period ran for 45 days, to June 26, 1995, although DOE indicated that late comments would be considered to the extent possible. As part of the public comment process, DOE held two public hearings in Los Alamos and Santa Fe, New Mexico, on May 31 and June 1, 1995. In addition, DOE made the draft classified supplement to the DARHT EIS available for review by appropriately cleared individuals with a need to know the classified information. Reviewers of the classified material included the State of New Mexico, the U.S. Environmental Protection Agency, the Department of Defense, and certain Indian Tribes. Volume 2 of the final DARHT EIS contains three chapters. Chapter 1 includes a collective summary of the comments received and DOE`s response. Chapter 2 contains the full text of the public comments on the draft DARHT EIS received by DOE. Chapter 3 contains DOE`s responses to the public comments and an indication as to how the comments were considered in the final EIS.

  9. Front, left to right: Mark Handy, Tuncay Taymaz, Jean-Pierre Brun, Walter Mooney. Back, left to right: Patience Cowie, Christian Teyssier, Alain Vauchez, Kevin Furlong,

    E-Print Network [OSTI]

    Cowie, Patience

    Front, left to right: Mark Handy, Tuncay Taymaz, Jean-Pierre Brun, Walter Mooney. Back, left transitions occur? Identifying these basic questions is straightforward, but answering them is prob- lematic area in back- ground shows the large range of conditions for faulting, from nucleation and localiza

  10. Transjugular Intrahepatic Porto-Systemic Shunt Placement in a Patient with Left-Lateral Split-Liver Transplant and Mesenterico-Left Portal Vein by Pass Placement

    SciTech Connect (OSTI)

    Miraglia, Roberto Maruzzelli, Luigi; Luca, Angelo

    2011-12-15

    This is a report of a successful placement of a transjugular intrahepatic porto-systemic shunt in a young patient with previous left-lateral, split-liver transplant and mesenterico-left portal vein by pass placement after posttransplant extrahepatic portal vein thrombosis.

  11. On neutrinoless double beta decay in the minimal left-right symmetric model

    E-Print Network [OSTI]

    Wei-Chih Huang; J. Lopez-Pavon

    2014-04-14

    We analyze the general phenomenology of neutrinoless double beta decay in the minimal left-right symmetric model. We study under which conditions a New Physics dominated neutrinoless double beta decay signal can be expected in the future experiments. We show that the correlation among the different contributions to the process, which arises from the neutrino mass generation mechanism, can play a crucial role. We have found that, if no fine tuned cancellation is involved in the light active neutrino contribution, a New Physics signal can be expected mainly from the $W_R-W_R$ channel. An interesting exception is the $W_L-W_R$ channel which can give a dominant contribution to the process if the right-handed neutrino spectrum is hierarchical with $M_1\\lesssim$ MeV and $M_2,M_3\\gtrsim$ GeV. We also discuss if a New Physics signal in neutrinoless double beta decay experiments is compatible with the existence of a successful Dark Matter candidate in the left-right symmetric models. It turns out that, although it is not a generic feature of the theory, it is still possible to accommodate such a signal with a KeV sterile neutrino as Dark matter.

  12. Left-right symmetry at LHC and precise 1-loop low energy data

    E-Print Network [OSTI]

    Chakrabortty, J; Sevillano, R; Szafron, R

    2012-01-01

    Despite many tests, even the Minimal Manifest Left-Right Symmetric Model (MLRSM) has never been ultimately confirmed or falsified. LHC gives a new possibility to test directly the most conservative version of left-right symmetric models at so far not reachable energy scales. If we take into account precise limits on the model which come from low energy processes, like the muon decay, possible LHC signals are strongly limited through the correlations of parameters among heavy neutrinos, heavy gauge bosons and heavy Higgs particles. To illustrate the situation in the context of LHC, we consider the "golden" process $pp \\to e^+ N$. For instance, in a case of degenerate heavy neutrinos and heavy Higgs masses at 10 TeV (in agreement with FCNC bounds) we get $\\sigma(pp \\to e^+ N)>10$ fb at $\\sqrt{s}=14$ TeV which is consistent with muon decay data for a very limited $W_2$ masses in the range (1970 GeV, 2050 GeV). Without restrictions coming from the muon data, $W_2$ masses would be in the range (1.0 TeV, 3.5 TeV). ...

  13. Strong P invariance, neutron EDM and minimal Left-Right parity at LHC

    E-Print Network [OSTI]

    Alessio Maiezza; Miha Nemevšek

    2014-10-15

    In the minimal Left-Right model the choice of left-right symmetry is twofold: either generalized parity $\\mathcal P$ or charge conjugation $\\mathcal C$. In the minimal model with spontaneously broken strict $\\mathcal P$, a large tree-level contribution to strong CP violation can be computed in terms of the spontaneous phase $\\alpha$. Searches for the neutron electric dipole moments then constrain the size of $\\alpha$. Following the latest update on indirect CP violation in the kaon sector, a bound on $W_R$ mass at $20 \\text{TeV}$ is set. Possible ways out of this bound, either by an additional relaxation mechanism or explicit breaking of $\\mathcal P$ are considered. To this end, the chiral loop of the neutron electric dipole moment at next-to-leading order is re-computed and provides an estimate of the weak contribution. Combining this constraint with other CP violating observables in the kaon sector allows for $M_{W_R} \\gtrsim 3 \\text{TeV}$. On the other hand, $\\mathcal C$-symmetry is free from such constraints, leaving the right-handed scale within the experimental reach.

  14. Fused off-axis object illumination direct-to-digital holography with a plurality of illumination sources

    DOE Patents [OSTI]

    Price, Jeffery R.; Bingham, Philip R.

    2005-11-08

    Systems and methods are described for rapid acquisition of fused off-axis illumination direct-to-digital holography. A method of recording a plurality of off-axis object illuminated spatially heterodyne holograms, each of the off-axis object illuminated spatially heterodyne holograms including spatially heterodyne fringes for Fourier analysis, includes digitally recording, with a first illumination source of an interferometer, a first off-axis object illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; and digitally recording, with a second illumination source of the interferometer, a second off-axis object illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis.

  15. Tool fabrication system for micro/nano milling—function analysis and design of a six-axis Wire EDM machine

    E-Print Network [OSTI]

    Cheng, X.; Wang, Z. G.; Kobayashi, S.; Nakamoto, K.; Yamazaki, K.

    2010-01-01

    nano milling—function analysis and design of a six-axis Wirepaper, a function analysis and design of a six-axis Wireon the function analysis and design of a six-axis WEDM

  16. Electron Beam Instability in Left-Handed Media

    E-Print Network [OSTI]

    Yury P. Bliokh; Sergey Savel'ev; Franco Nori

    2008-04-08

    We predict that two electron beams can develop an instability when passing through a slab of left-handed media (LHM). This instability, which is inherent only for LHM, originates from the backward Cherenkov radiation and results in a self-modulation of the beams and radiation of electromagnetic waves. These waves leave the sample via the rear surface of the slab (the beam injection plane) and form two shifted bright circles centered at the beams. A simulated spectrum of radiation has well-separated lines on top of a broad continuous spectrum, which indicates dynamical chaos in the system. The radiation intensity and its spectrum can be controlled either by the beams' current or by the distance between the two beams.

  17. Dual-Axis Resonance Testing of Wind Turbine Blades

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2014-07-28

    Wind turbine blades must undergo strength and fatigue testing in order to be rated and marketed appropriately. Presently, wind turbine blades are fatigue-tested in the flapwise direction and in the edgewise direction independently. This testing involves placing the blades through 1 to 10 million or more load or fatigue cycles, which may take 3 to 12 months or more to complete for each tested direction. There is a need for blade testing techniques that are less expensive to use and require...

  18. Characterization of 3D surface topography in 5 axis milling Yann Quinsat1*

    E-Print Network [OSTI]

    Boyer, Edmond

    cylinder bores is partially characterized by oil consumption and blow-by. In this specific case, it is more significant to consider Sq, Sk, Svk, Sds, Sbi to describe oil consumption and Sv, Svi for blow-by [9

  19. MHK ISDB/Instruments/AXYS 3 Metre Buoy | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma, Arizona:Oregon:LowellMHK ISDB/Instruments/ACM-WAVE-PLUSMHKMHK

  20. Intrahepatic Left to Right Portoportal Venous Collateral Vascular Formation in Patients Undergoing Right Portal Vein Ligation

    SciTech Connect (OSTI)

    Lienden, K. P. van; Hoekstra, L. T.; Bennink, R. J.; Gulik, T. M. van

    2013-12-15

    Purpose: We investigated intrahepatic vascular changes in patients undergoing right portal vein ligation (PVL) or portal vein embolization (PVE) in conjunction with the ensuing hypertrophic response and function of the left liver lobe. Methods: Between December 2008 and October 2011, 7 patients underwent right PVL and 14 patients PVE. Computed tomographic (CT) volumetry to assess future remnant liver (FRL) and functional hepatobiliary scintigraphy were performed in all patients before and 3 weeks after portal vein occlusion. In 18 patients an intraoperative portography was performed to assess perfusion through the occluded portal branches. Results: In all patients after initially successful PVL, reperfused portal veins were observed on CT scan 3 weeks after portal occlusion. This was confirmed in all cases during intraoperative portography. Intrahepatic portoportal collaterals were identified in all patients in the PVL group and in one patient in the PVE group. In all other PVE patients, complete occlusion of the embolized portal branches was observed on CT scan and on intraoperative portography. The median increase of FRL volume after PVE was 41.6 % (range 10-305 %), and after PVL was only 8.1 % (range 0-102 %) (p = 0.179). There were no differences in FRL function between both groups. Conclusion: Preoperative PVE and PVL are both methods to induce hypertrophy of the FRL in anticipation of major liver resection. Compared to PVE, PVL seems less efficient in inducing hypertrophy of the nonoccluded left lobe. This could be caused by the formation of intrahepatic portoportal neocollateral vessels, through which the ligated portal branches are reperfused within 3 weeks.

  1. Magnetohydrodynamically stable plasma with supercritical current density at the axis

    SciTech Connect (OSTI)

    Burdakov, A. V. [Budker Institute of Nuclear Physics, 11 Lavrentjev Avenue, 630090 Novosibirsk (Russian Federation); Novosibirsk State Technical University, 20 Karl Marks Avenue, 630092 Novosibirsk (Russian Federation); Postupaev, V. V., E-mail: V.V.Postupaev@inp.nsk.su; Sudnikov, A. V. [Budker Institute of Nuclear Physics, 11 Lavrentjev Avenue, 630090 Novosibirsk (Russian Federation); Novosibirsk State University, 2 Pirogova st., 630090 Novosibirsk (Russian Federation)

    2014-05-15

    In this work, an analysis of magnetic perturbations in the GOL-3 experiment is given. In GOL-3, plasma is collectively heated in a multiple-mirror trap by a high-power electron beam. During the beam injection, the beam-plasma interaction maintains a high-level microturbulence. This provides an unusual radial profile of the net current (that consists of the beam current, current of the preliminary discharge, and the return current). The plasma core carries supercritical current density with the safety factor well below unity, but as a whole, the plasma is stable with q(a)???4. The net plasma current is counter-directed to the beam current; helicities of the magnetic field in the core and at the edge are of different signs. This forms a system with a strong magnetic shear that stabilizes the plasma core in good confinement regimes. We have found that the most pronounced magnetic perturbation is the well-known n?=?1, m?=?1 mode for both stable and disruptive regimes.

  2. DETECTION OF SEMIMAJOR AXIS DRIFTS IN 54 NEAR-EARTH ASTEROIDS: NEW MEASUREMENTS OF THE YARKOVSKY EFFECT

    SciTech Connect (OSTI)

    Nugent, C. R.; Margot, J. L.; Chesley, S. R.; Vokrouhlicky, D.

    2012-08-15

    We have identified and quantified semimajor axis drifts in near-Earth asteroids (NEAs) by performing orbital fits to optical and radar astrometry of all numbered NEAs. We focus on a subset of 54 NEAs that exhibit some of the most reliable and strongest drift rates. Our selection criteria include a Yarkovsky sensitivity metric that quantifies the detectability of semimajor axis drift in any given data set, a signal-to-noise metric, and orbital coverage requirements. In 42 cases, the observed drifts ({approx}10{sup -3} AU Myr{sup -1}) agree well with numerical estimates of Yarkovsky drifts. This agreement suggests that the Yarkovsky effect is the dominant non-gravitational process affecting these orbits, and allows us to derive constraints on asteroid physical properties. In 12 cases, the drifts exceed nominal Yarkovsky predictions, which could be due to inaccuracies in our knowledge of physical properties, faulty astrometry, or modeling errors. If these high rates cannot be ruled out by further observations or improvements in modeling, they would be indicative of the presence of an additional non-gravitational force, such as that resulting from a loss of mass of order a kilogram per second. We define the Yarkovsky efficiency f{sub Y} as the ratio of the change in orbital energy to incident solar radiation energy, and we find that typical Yarkovsky efficiencies are {approx}10{sup -5}.

  3. Order-of-magnitude enhancement of wind farm power density via counter-rotating vertical-axis wind turbine arrays

    E-Print Network [OSTI]

    Dabiri, John O

    2010-01-01

    Modern wind farms require significant land resources to separate each wind turbine from the adjacent turbine wakes. These aerodynamic constraints limit the amount of power that can be extracted from a given wind farm footprint. We conducted full-scale field tests of vertical-axis wind turbines in counter-rotating configurations under natural wind conditions. Whereas wind farms consisting of propeller-style turbines produce 2 to 3 watts of power per square meter of land area, these field tests indicate that power densities approaching 100 W m^-2 can be achieved by arranging vertical-axis wind turbines in layouts that enable them to extract energy from adjacent wakes. In addition, we calculated that the global wind resource available to 10-m tall turbines based on the present approach is approximately 225 trillion watts (TW), which significantly exceeds the global wind resource available to 80-m tall, propeller-style wind turbines, approximately 75 TW. This improvement is due to the closer spacing that can be a...

  4. Constraints on Off-Axis GRB Jets in Type Ibc Supernovae From Late-Time Radio Observations

    E-Print Network [OSTI]

    A. M. Soderberg; D. A. Frail; M. H. Wieringa

    2005-12-06

    It has been suggested that the peculiar properties of the luminous Type Ic supernova SN 1998bw and its low-energy gamma-ray burst GRB 980425 may be understood if they originated in a standard gamma-ray burst explosion viewed far from the axis of the relativistic jet. In this scenario, strong radio emission is predicted from the jet on a timescale 1 to 10 years after the explosion as it decelerates and spreads into our line of sight. To test this hypothesis we have carried out late-time radio observations of SN 1998bw at $t=5.6$ years, yielding upper limits which are consistent with the continued fading of the supernova. We find these limits to be consistent with an off-axis jet only if the progenitor mass loss rate is $\\dot{M}\\lesssim 4 \\times 10^{-7}$ M$_\\odot$ yr$^{-1}$ (for a wind velocity $v_w=1000$ km s$^{-1}$) or the fraction of the shock energy in magnetic fields is $\\epsilon_B \\lesssim 10^{-3}$. These values are low relative to those inferred for cosmological GRBs. We combine the SN 1998bw measurements with existing observations for a sample of 15 local Type Ibc supernovae to estimate that at most 6% produce collimated, relativistic outflows.

  5. The use of a beryllium Hopkinson bar to characterize in-axis and cross-axis accelerometer response in shock environments

    SciTech Connect (OSTI)

    Bateman, V.I.; Brown, F.A.

    1997-05-01

    The characteristics of a piezoresistive accelerometer in shock environments are being studied at Sandia National Laboratories in the Mechanical Shock Testing Laboratory. A beryllium Hopkinson bar capability has been developed to extend the understanding of the piezoresistive accelerometer, in two mechanical configurations and with and without mechanical isolation, in the high frequency, high shock environments where measurements are being made. In this paper, recent measurements with beryllium single and split-Hopkinson bar configurations are described. The in axis performance of the piezoresistive accelerometer in mechanical isolation for frequencies of dc-30 kHz and shock magnitudes of up to 6,000 g as determined from measurements with a beryllium Hopkinson bar with a certified laser doppler vibrometer as the reference measurement are presented. Results of characterizations of the accelerometers subjected to cross axis shocks in a split beryllium Hopkinson bar configuration are also presented.

  6. AXIS: An instrument for imaging Compton radiographs using the Advanced Radiography Capability on the NIF

    SciTech Connect (OSTI)

    Hall, G. N. Izumi, N.; Tommasini, R.; Carpenter, A. C.; Palmer, N. E.; Zacharias, R.; Felker, B.; Holder, J. P.; Allen, F. V.; Bell, P. M.; Bradley, D.; Montesanti, R.; Landen, O. L.

    2014-11-15

    Compton radiography is an important diagnostic for Inertial Confinement Fusion (ICF), as it provides a means to measure the density and asymmetries of the DT fuel in an ICF capsule near the time of peak compression. The AXIS instrument (ARC (Advanced Radiography Capability) X-ray Imaging System) is a gated detector in development for the National Ignition Facility (NIF), and will initially be capable of recording two Compton radiographs during a single NIF shot. The principal reason for the development of AXIS is the requirement for significantly improved detection quantum efficiency (DQE) at high x-ray energies. AXIS will be the detector for Compton radiography driven by the ARC laser, which will be used to produce Bremsstrahlung X-ray backlighter sources over the range of 50 keV–200 keV for this purpose. It is expected that AXIS will be capable of recording these high-energy x-rays with a DQE several times greater than other X-ray cameras at NIF, as well as providing a much larger field of view of the imploded capsule. AXIS will therefore provide an image with larger signal-to-noise that will allow the density and distribution of the compressed DT fuel to be measured with significantly greater accuracy as ICF experiments are tuned for ignition.

  7. Generalized Virasoro algebra: left-symmetry and related algebraic and hydrodynamic properties

    E-Print Network [OSTI]

    Mahouton Norbert Hounkonnou; Partha Guha; Tudor Ratiu

    2015-10-13

    Motivated by the work of Kupershmidt (J. Nonlin. Math. Phys. 6 (1998), 222 --245) we discuss the occurrence of left symmetry in a generalized Virasoro algebra. The multiplication rule is defined, which is necessary and sufficient for this algebra to be quasi-associative. Its link to geometry and nonlinear systems of hydrodynamic type is also recalled. Further, the criteria of skew-symmetry, derivation and Jacobi identity making this algebra into a Lie algebra are derived. The coboundary operators are defined and discussed. We deduce the hereditary operator and its generalization to the corresponding $3-$ary bracket. Further, we derive the so-called $\\rho-$compatibility equation and perform a phase-space extension. Finally, concrete relevant particular cases are investigated.

  8. In-Axis and Cross-Axid Accelerometer Response in Shock Environments

    SciTech Connect (OSTI)

    Bateman, V.I.; Brown, F.A.

    1999-03-10

    The characteristics of a piezoresistive accelerometer in shock environments have been studied at Sandia National Laboratories (SNL) in the Mechanical Shock Testing Laboratory for ten years The SNL Shock Laboratory has developed a capability to characterize accelerometers and other transducers with shocks aligned with the transducer's sensing axis and perpendicular to the transducer's sensing axis. This unique capability includes Hopkinson bars made of aluminum, steel, titanium, and beryllium. The bars are configured as both single and split Hopkinson bars. Four different areas that conclude this study are summarized in this paper: characterization of the cross-axis response of the accelerometer in the four environments of static compression, static strain on a beam, dynamic strain, and mechanical shock, the accelerometer's response on a titanium Hopkinson bar with two 45{degree} flats on the end of the bar; failure analysis of the accelerometer; and measurement of the accelerometer's self-generating cable response in a shock environment.

  9. LEFT CELLS IN THE AFFINE WEYL GROUP OF TYPE F4 Jian-yi Shi

    E-Print Network [OSTI]

    Shi, Jian Yi

    LEFT CELLS IN THE AFFINE WEYL GROUP OF TYPE F4 Jian-yi Shi Max-Planck-Institut f¨ur Mathematik.R.C. Abstract. By applying an algorithm designed before, we complete the description for all the left cells of the affine Weyl group Wa of type F4 by finding a representative set of its left cells together with all its

  10. Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR

    SciTech Connect (OSTI)

    Chang, Z.; Park, W.; Fredrickson, E.D.

    1996-06-01

    Off-axis sawteeth are often observed in reversed magnetic shear plasmas when the minimum safety factor q is near or below 2. Fluctuations with m/n = 2/1 (m and n are the poloidal and toroidal mode numbers) appear before and after the crashes. Detailed comparison has been made between the measured T{sub e} profile evolution during the crash and a nonlinear numerical magnetohydrodynamics (MHD) simulation. The good agreement between the observation and simulation indicates that the off-axis sawteeth are due to a double-tearing magnetic reconnection process.

  11. Reform or Radicalism: Left Social Movements from the Battle of Seattle to Occupy Wall Street

    E-Print Network [OSTI]

    Rowe, James K; Carroll, Myles

    2014-01-01

    abstract antipathy towards ‘tepid reform’ and ‘unrealisticReform or Radicalism: Left Social Movements from the Battledynamism between radical and reform wings drove gains. This

  12. Registration of an on-axis see-through head-mounted display and camera system

    E-Print Network [OSTI]

    Peli, Eli

    Registration of an on-axis see-through head- mounted display and camera system Gang Luo Harvard Abstract. An optical see-through head-mounted display (HMD) system integrating a miniature camera and a low registration error across a wide range of depth. In reality, a small camera-eye misalignment may

  13. Calibration of Multi-Axis MEMS Force Sensors Using the Shape from Motion Method

    E-Print Network [OSTI]

    Sun, Yu

    Calibration of Multi-Axis MEMS Force Sensors Using the Shape from Motion Method Yu Sun, Keekyoung Inst. of Robotics and Intelligent Systems University of Toronto University of Minnesota Swiss Federal systems) capacitive force sensor with strict linearity and a new sensor calibration method for micro-sensors

  14. Automatic axis generation for virtual bronchoscopic assessment of major airway obstructions

    E-Print Network [OSTI]

    Higgins, William

    -tree axes, corresponding airway cross-sectional area measure- ments, and a segmented airway tree in a fewU N C O R R EC TED PR O O F Automatic axis generation for virtual bronchoscopic assessment of major airway obstructions R.D. Swifta , A.P. Kiralya , A.J. Sherbondya , A.L. Austina , E.A. Hoffmanb , G. Mc

  15. Rotation Angle for the Optimum Tracking of One-Axis Trackers

    SciTech Connect (OSTI)

    Marion, W. F.; Dobos, A. P.

    2013-07-01

    An equation for the rotation angle for optimum tracking of one-axis trackers is derived along with equations giving the relationships between the rotation angle and the surface tilt and azimuth angles. These equations are useful for improved modeling of the solar radiation available to a collector with tracking constraints and for determining the appropriate motor revolutions for optimum tracking.

  16. First-order design of off-axis reflective ophthalmic adaptive optics systems using afocal

    E-Print Network [OSTI]

    First-order design of off-axis reflective ophthalmic adaptive optics systems using afocal for designing laser cavities, spectrographs and adaptive optics retinal imaging systems. The use, range respectively. This is discussed using examples from adaptive optics retinal imaging systems. The performance

  17. On the probability of major-axis precession in triaxial ellipsoidal potentials

    E-Print Network [OSTI]

    P. A. Thomas; S. Vine; F. R. Pearce

    1993-08-09

    Orbits in triaxial ellipsoidal potentials precess about either the major or minor axis of the ellipsoid. In standard perturbation theory it can be shown that a circular orbit will precess about the minor axis if its angular momentum vector lies in a region bounded by two great circles which pass through the intermediate axis and which are inclined with minimum separation $i_T$ from the minor axis. We test the accuracy of the standard formula for $i_T$ by performing orbit integrations to determine $i_S$, the simulated turnover angle corresponding to $i_T$. We reach two principal conclusions: (i) $i_S$ is usually greater than $i_T$, by as much as 12 degrees even for moderate triaxialities, $A/1.2

  18. Integral operators with the generalized sine-kernel on the real axis

    E-Print Network [OSTI]

    N. A. Slavnov

    2010-05-27

    The asymptotic properties of integral operators with the generalized sine kernel acting on the real axis are studied. The formulas for the resolvent and the Fredholm determinant are obtained in the large x limit. Some applications of the results obtained to the theory of integrable models are considered.

  19. CYCLOTRON HEATING NFR THE MULTIPOLE B = 0 AXIS J. C. Sprott

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    = 0 axis, however, the magnetic field has a simple asymptotic form, 1+1 9--1 B = B = a r where 29 difficult to calculate except numerically because of the complicated shape of the magnetic field. Near the B ) normalized o against B at the outer wall midplane. Also shown is the corresponding plot for the levitated

  20. Hardware-in-the-Loop Simulations and Control Design for a Small Vertical Axis Wind Turbine

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    the dynamics of the rotor. To deal with disturbance torques in the HIL system, a virtual plant is introduced to obtain an error between the speeds in the HIL system and virtual plant. This error is used by a pro a maximum power point tracking (MPPT) algorithm for small vertical axis wind turbines (VAWTs). Wind torque

  1. MAGNETIC NEUTRON SCATTERING. And Recent Developments in the Triple Axis Spectroscopy

    E-Print Network [OSTI]

    Johnson, Peter D.

    Chapter 1 MAGNETIC NEUTRON SCATTERING. And Recent Developments in the Triple Axis Spectroscopy Igor.................................................................................... 2 2. Neutron interaction with matter and scattering cross-section ........ 6 2.1 Basic scattering theory and differential cross-section................ 7 2.2 Neutron interactions and scattering lengths

  2. Axis-Aligned Filtering for Interactive Physically-Based Diffuse Indirect Lighting Soham Uday Mehta1

    E-Print Network [OSTI]

    O'Brien, James F.

    -bounce indirect lighting, Our Method average 63 samples per pixel (spp) (b) Adaptive Sampling, based on a novel frequency analysis of indirect lighting. Our method combines adaptive sampling by MonteAxis-Aligned Filtering for Interactive Physically-Based Diffuse Indirect Lighting Soham Uday Mehta1

  3. Automatic polishing process of plastic injection molds on a 5-axis milling center

    E-Print Network [OSTI]

    Xavier Pessoles; Christophe Tournier

    2010-03-26

    The plastic injection mold manufacturing process includes polishing operations when surface roughness is critical or mirror effect is required to produce transparent parts. This polishing operation is mainly carried out manually by skilled workers of subcontractor companies. In this paper, we propose an automatic polishing technique on a 5-axis milling center in order to use the same means of production from machining to polishing and reduce the costs. We develop special algorithms to compute 5-axis cutter locations on free-form cavities in order to imitate the skills of the workers. These are based on both filling curves and trochoidal curves. The polishing force is ensured by the compliance of the passive tool itself and set-up by calibration between displacement and force based on a force sensor. The compliance of the tool helps to avoid kinematical error effects on the part during 5-axis tool movements. The effectiveness of the method in terms of the surface roughness quality and the simplicity of implementation is shown through experiments on a 5-axis machining center with a rotary and tilt table.

  4. Correlating anomalies of the microwave sky: The Good, the Evil and the Axis

    E-Print Network [OSTI]

    Aleksandar Rakic; Dominik J. Schwarz

    2007-05-11

    At the largest angular scales the presence of a number of unexpected features has been confirmed by the latest measurements of the cosmic microwave background (CMB). Among them are the anomalous alignment of the quadrupole and octopole with each other as well as the stubborn lack of angular correlation on scales >60deg. We search for correlations between these two phenomena and demonstrate their absence. A Monte Carlo likelihood analysis confirms previous studies and shows that the joint likelihood of both anomalies is incompatible with the best-fit Lambda Cold Dark Matter model at >99.95% C.L. At the same time, a presumed special axis (the `Axis of Evil') identified on the microwave sky demands additional contributions to multipole power on top of the primordial standard inflationary ones. We find that the notion of a preferred axis in the CMB is misleading and inconsistent with three-year data from the Wilkinson Microwave Anisotropy Probe (WMAP). Rather the data require a preferred plane, whereupon the axis is just the normal direction to that plane. Rotational symmetry within that plane is inconsistent with the observations and is ruled out at high confidence.

  5. Optical response with threefold symmetry axis on oriented microdomains of opal photonic crystals

    E-Print Network [OSTI]

    Optical response with threefold symmetry axis on oriented microdomains of opal photonic crystals L November 2008 Opal photonic crystals viewed along the 111 direction of the fcc structure have a threefold measurements on 111 -stacked silica opals with single oriented microdomains, identified by field

  6. A lightweight high performance dual-axis gimbal for space applications

    SciTech Connect (OSTI)

    Pines, D.J.; Hakala, D.B.; Malueg, R.

    1995-05-05

    This paper describes the design, development and performance of a lightweight precision gimbal with dual-axis slew capability to be used in a closed-loop optical tracking system at Lawrence Livermore National Laboratory-LLNL. The motivation for the development of this gimbal originates from the need to acquire and accurately localize warm objects (T{approximately}500 K) in a cluttered background. The design of the gimbal is centered around meeting the following performance requirements: pointing accuracy with control < 35 {mu}rad-(1-{omega}); slew capability > 0.2 rad/sec; mechanical weight < 5 kg. These performance requirements are derived by attempting to track a single target from multiple satellites in low Earth orbit using a mid-wave infrared camera. Key components in the gimbal hardware that are essential to meeting the performance objectives include a nickel plated beryllium mirro, an accurate lightweight capacitive pickoff device for angular measurement about the elevation axis, a 16-bit coarse/fine resolver for angular measurement about the azimuth axis, a toroidally wound motor with low hysteresis for providing torque about the azimuth axis, and the selection of beryllium parts to insure high stiffness to weight ratios and more efficient thermal conductivity. Each of these elements are discussed in detail to illustrate the design trades performed to meet the tracking and slewing requirements demanded. Preliminary experimental results are also given for various commanded tracking maneuvers.

  7. Method for non-contact particle manipulation and control of particle spacing along an axis

    SciTech Connect (OSTI)

    Goddard, Gregory Russ; Kaduchak, Gregory; Jett, James Hubert; Graves, Steven Wayde

    2013-09-10

    One or more of the embodiments of the present invention provide for a method of non-contact particle manipulation and control of particle spacing along an axis which includes axial and radial acoustic standing wave fields. Particles are suspended in an aqueous solution, and this solution then flows into the cylindrical flow channel. While the solution flows through the flow channel, the outer structure of the flow channel is vibrated at a resonant frequency, causing a radial acoustic standing wave field to form inside the flow channel in the solution. These radial acoustic standing waves focus the particles suspended in the solution to the center axis of the cylindrical flow channel. At the same time, a transducer is used to create an axial acoustic standing wave field in the flow channel parallel to the axis of the flow channel. This drives the particles, which are already being focused to the center axis of the flow channel, to nodes or anti-nodes of the axial standing wave at half-wavelength intervals, depending on whether the particles are more or less dense and more or less compressible than the surrounding fluid.

  8. Negative Refraction and Left-Handed Electromagnetism in Microwave Photonic Crystals

    E-Print Network [OSTI]

    Sridhar, Srinivas

    Negative Refraction and Left-Handed Electromagnetism in Microwave Photonic Crystals P.V. Parimi,1 W refraction observed corresponds to left-handed electromagnetism that arises due to the dispersion properties of materials that are transparent to electromagnetic (EM) waves can be characterized by an index

  9. Optimal Switching with Quasi-Left-Continuous Switching Costs that Can Change Sign

    E-Print Network [OSTI]

    Sidorov, Nikita

    Optimal Switching with Quasi-Left-Continuous Switching Costs that Can Change Sign Randall Martyr of Mathematics, The University of Manchester #12;Optimal switching with quasi-left-continuous switching costs switching over multiple modes on a finite-horizon in contin- uous time. The performance index includes

  10. THE ALTERNATING GREEDY EXPANSION AND APPLICATIONS TO COMPUTING DIGIT EXPANSIONS FROM LEFT-TO-RIGHT IN

    E-Print Network [OSTI]

    Heuberger, Clemens

    THE ALTERNATING GREEDY EXPANSION AND APPLICATIONS TO COMPUTING DIGIT EXPANSIONS FROM LEFT-TO-RIGHT curve. We give two algorithms to compute such a minimal joint expansion from left to right. To this aim and algorithms. In the second part, we apply it to give an algorithm for computing a joint expansion of d

  11. Direct dating of left-lateral deformation along the Red River shear zone, China and Vietnam

    E-Print Network [OSTI]

    Direct dating of left-lateral deformation along the Red River shear zone, China and Vietnam Lisa D-lateral shearing. Data from the southern RRSZ within Vietnam are complicated by Tertiary overprinting of rocks dating of left-lateral deformation along the Red River shear zone, China and Vietnam, J. Geophys. Res

  12. God's Left Eye Closes in Vietnam And Re-Opens in California

    E-Print Network [OSTI]

    Zordan, Victor

    God's Left Eye Closes in Vietnam And Re-Opens in California Caodaism's Transpacific Transformations Caodaism is a new religion revealed to a group of colonized intellectuals in southern Vietnam in 1926 who documentaries (distributed by www.der.org), including "The Left Eye of God: Caodaism Travels from Vietnam

  13. Bicycles and left-right tours in locally finite Henning Bruhn Stefanie Kosuch Melanie Win Myint

    E-Print Network [OSTI]

    Diestel, Reinhard

    Bicycles and left-right tours in locally finite graphs Henning Bruhn Stefanie Kosuch Melanie Win Myint Abstract We extend three results involving bicycles and left-right tours to infi- nite, locally-right tours generate the bicycle space and the planarity criterion of Archdeacon, Bonnington and Little

  14. Energy Efficiency Maximization of Practical Wireless Communication Systems

    E-Print Network [OSTI]

    ERASLAN, EREN

    2013-01-01

    left y-axis) and energy efficiency (right y- axis)left y-axis) and energy efficiency (right y-axis) per-

  15. PHYSICS BEFORE AND AFTER EINSTEIN This page intentionally left blank

    E-Print Network [OSTI]

    Mamone Capria, Marco

    /Lavis Marketing 73 Lime Walk Headington Oxford OX3 7AD England fax: +44 1865 750079 Distributor in the USA

  16. IOP PUBLISHING BIOINSPIRATION & BIOMIMETICS Bioinsp. Biomim. 5 (2010) 035005 (6pp) doi:10.1088/1748-3182/5/3/035005

    E-Print Network [OSTI]

    Dabiri, John O.

    2010-01-01

    .1088/1748-3182/5/3/035005 Fish schooling as a basis for vertical axis wind turbine farm design* Robert W Whittlesey1, Sebastian-diameters laterally [4, 9]. An alternative paradigm for wind energy extraction is found in vertical axis wind turbine at stacks.iop.org/BB/5/035005 Abstract Most wind farms consist of horizontal axis wind turbines (HAWTs) due

  17. Influence of compensator thickness, field size, and off-axis distance on the effective attenuation coefficient of a cerrobend compensator for intensity-modulated radiation therapy

    SciTech Connect (OSTI)

    Haghparast, Abbas; Hashemi, Bijan; Eivazi, Mohammad Taghi

    2013-04-01

    Intensity-modulated radiation therapy (IMRT) can be performed by using compensators. To make a compensator for an IMRT practice, it is required to calculate the effective attenuation coefficient (?{sub eff}) of its material, which is affected by various factors. We studied the effect of the variation of the most important factors on the calculation of the ?{sub eff} of the cerrobend compensator for 6-MV photon beams, including the field size, compensator thickness, and off-axis distance. Experimental measurements were carried out at 100 cm source-to-surface distance and 10 cm depth for the 6-MV photon beams of an Elekta linac using various field size, compensator thickness, and off-axis settings. The field sizes investigated ranged from 4 × 4 to 25 × 25 cm{sup 2} and the cerrobend compensator thicknesses from 0.5–6 cm. For a fixed compensator thickness, variation of the ?{sub eff} with the field size ranged from 3.7–6.8%, with the highest value attributed to the largest compensator thickness. At the reference field size of 10 × 10 cm{sup 2}, the ?{sub eff} varied by 16.5% when the compensator thickness was increased from 0.5–6 cm. However, the variation of the ?{sub eff} with the off-axis distance was only 0.99% at this field size, whereas for the largest field size, it was more significant. Our results indicated that the compensator thickness and field size have the most significant effect on the calculation of the compensator ?{sub eff} for the 6-MV photon beam. Therefore, it is recommended to consider these parameters when calculating the compensator thickness for an IMRT practice designed for these beams. The off-axis distance had a significant effect on the calculation of the ?{sub eff} only for the largest field size. Hence, it is recommended to consider the effect of this parameter only for field sizes larger than 25 × 25 cm{sup 2}.

  18. Potential order-of-magnitude enhancement of wind farm power density via counter-rotating vertical-axis wind

    E-Print Network [OSTI]

    Dabiri, John O.

    Potential order-of-magnitude enhancement of wind farm power density via counter-rotating vertical-axis wind turbine arrays John O. Dabiria) Graduate Aeronautical Laboratories and Bioengineering, California; published online 19 July 2011) Modern wind farms comprised of horizontal-axis wind turbines (HAWTs) require

  19. Probabilistic vessel axis tracing and its application to vessel segmentation with stream surfaces and minimum cost paths

    E-Print Network [OSTI]

    Chung, Albert C. S.

    Probabilistic vessel axis tracing and its application to vessel segmentation with stream surfaces May 2007 Available online 2 June 2007 Abstract We propose a novel framework to segment vessels on their cross-sections. It starts with a probabilistic vessel axis tracing in a gray-scale three

  20. P-8 / D. R. Cairns P-8: Conductive and Adhesive Properties of Z-axis Adhesives for Tail

    E-Print Network [OSTI]

    Cairns, Darran

    P-8 / D. R. Cairns P-8: Conductive and Adhesive Properties of Z-axis Adhesives for Tail Bonding Abstract The change in resistance of an anisotropic conducting adhesive (Z-axis adhesive) solderless joint ageing at 85° C and 85 % Relative humidity for six days. The anisotropic conducting adhesive performs

  1. Axi-symmetrical flow reactor for [sup 196]Hg photochemical enrichment

    DOE Patents [OSTI]

    Grossman, M.W.

    1991-04-30

    The present invention is directed to an improved photochemical reactor useful for the isotopic enrichment of a predetermined isotope of mercury, especially, [sup 196]Hg. Specifically, two axi-symmetrical flow reactors were constructed according to the teachings of the present invention. These reactors improve the mixing of the reactants during the photochemical enrichment process, affording higher yields of the desired [sup 196]Hg product. Measurements of the variation of yield (Y) and enrichment factor (E) along the flow axis of these reactors indicates very substantial improvement in process uniformity compared to previously used photochemical reactor systems. In one preferred embodiment of the present invention, the photoreactor system was built such that the reactor chamber was removable from the system without disturbing the location of either the photochemical lamp or the filter employed therewith. 10 figures.

  2. Influence of thermal agitation on the electric field induced precessional magnetization reversal with perpendicular easy axis

    SciTech Connect (OSTI)

    Cheng, Hongguang, E-mail: chenghg7932@gmail.com; Deng, Ning [Institute of Microelectronics, Tsinghua University, Beijing 100084 (China)] [Institute of Microelectronics, Tsinghua University, Beijing 100084 (China)

    2013-12-15

    We investigated the influence of thermal agitation on the electric field induced precessional magnetization switching probability with perpendicular easy axis by solving the Fokker-Planck equation numerically with finite difference method. The calculated results show that the thermal agitation during the reversal process crucially influences the switching probability. The switching probability can be achieved is only determined by the thermal stability factor ? of the free layer, it is independent on the device dimension, which is important for the high density device application. Ultra-low error rate down to the order of 10{sup ?9} can be achieved for the device of thermal stability factor ? of 40. Low damping factor ? material should be used for the free layer for high reliability device applications. These results exhibit potential of electric field induced precessional magnetization switching with perpendicular easy axis for ultra-low power, high speed and high density magnetic random access memory (MRAM) applications.

  3. Cortical microtubule nucleation can organise the cytoskeleton of $Drosophila$ oocytes to define the anteroposterior axis

    E-Print Network [OSTI]

    Philipp Khuc Trong; Hélène Doerflinger; Jörn Dunkel; Daniel St. Johnston; Raymond E. Goldstein

    2015-09-26

    Many cells contain non-centrosomal arrays of microtubules (MT), but the assembly, organisation and function of these arrays are poorly understood. We present the first theoretical model for the non-centrosomal MT cytoskeleton in $Drosophila$ oocytes, in which $bicoid$ and $oskar$ mRNAs become localised to establish the anterior-posterior body axis. Constrained by experimental measurements, the model shows that a simple gradient of cortical MT nucleation is sufficient to reproduce the observed MT distribution, cytoplasmic flow patterns and localisation of $oskar$ and naive $bicoid$ mRNAs. Our simulations exclude a major role for cytoplasmic flows in localisation and reveal an organisation of the MT cytoskeleton that is more ordered than previously thought. Furthermore, modulating cortical MT nucleation induces a bifurcation in cytoskeletal organisation that accounts for the phenotypes of polarity mutants. Thus, our three-dimensional model explains many features of the MT network and highlights the importance of differential cortical MT nucleation for axis formation.

  4. Dual-axis high-data-rate atom interferometer via cold ensemble exchange

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

    Rakholia, Akash V.; McGuinness, Hayden J.; Biedermann, Grant W.

    2014-11-24

    We demonstrate a dual-axis accelerometer and gyroscope atom interferometer, which can form the building blocks of a six-axis inertial measurement unit. By recapturing the atoms after the interferometer sequence, we maintain a large atom number at high data rates of 50 to 100 measurements per second. Two cold ensembles are formed in trap zones located a few centimeters apart and are launched toward one another. During their ballistic trajectory, they are interrogated with a stimulated Raman sequence, detected, and recaptured in the opposing trap zone. As a result, we achieve sensitivities at ?g/ ?Hz and ?rad/s/ ?Hz levels, making thismore »a compelling prospect for expanding the use of atom interferometer inertial sensors beyond benign laboratory environments.« less

  5. Fish schooling as a basis for vertical axis wind turbine farm design

    E-Print Network [OSTI]

    Whittlesey, Robert W; Dabiri, John O

    2010-01-01

    Most wind farms consist of horizontal axis wind turbines (HAWTs) due to the high power coefficient (mechanical power output divided by the power of the free-stream air through the turbine cross-sectional area) of an isolated turbine. However when in close proximity to neighbouring turbines, HAWTs suffer from a reduced power coefficient. In contrast, previous research on vertical axis wind turbines (VAWTs) suggests that closely-spaced VAWTs may experience only small decreases (or even increases) in an individual turbine's power coefficient when placed in close proximity to neighbours, thus yielding much higher power outputs for a given area of land. A potential flow model of inter-VAWT interactions is developed to investigate the effect of changes in VAWT spatial arrangement on the array performance coefficient, which compares the expected average power coefficient of turbines in an array to a spatially-isolated turbine. A geometric arrangement based on the configuration of shed vortices in the wake of schooli...

  6. Tracking formulas and strategies for a receiver oriented dual-axis tracking toroidal heliostat

    SciTech Connect (OSTI)

    Guo, Minghuan; Wang, Zhifeng; Liang, Wenfeng; Zhang, Xiliang; Zang, Chuncheng; Lu, Zhenwu; Wei, Xiudong

    2010-06-15

    A 4 m x 4 m toroidal heliostat with receiver oriented dual-axis tracking, also called spinning-elevation tracking, was developed as an auxiliary heat source for a hydrogen production system. A series of spinning-elevation tracking formulas have been derived for this heliostat. This included basic tracking formulas, a formula for the elevation angle for heliostat with a mirror-pivot offset, and a more general formula for the biased elevation angle. This paper presents the new tracking formulas in detail and analyzes the accuracy of applying a simplifying approximation. The numerical results show these receiver oriented dual-axis tracking formula approximations are accurate to within 2.5 x 10{sup -6} m in image plane. Some practical tracking strategies are discussed briefly. Solar images from the toroidal heliostat at selected times are also presented. (author)

  7. Sun-relative pointing for dual-axis solar trackers employing azimuth and elevation rotations.

    SciTech Connect (OSTI)

    Riley, Daniel M.; Hansen, Clifford W.

    2014-04-01

    Dual axis trackers employing azimuth and elevation rotations are common in the field of photovoltaic (PV) energy generation. Accurate sun-tracking algorithms are widely available. However, a steering algorithm has not been available to accurately point the tracker away from the sun such that a vector projection of the sun beam onto the tracker face falls along a desired path relative to the tracker face. We have developed an algorithm which produces the appropriate azimuth and elevation angles for a dual axis tracker when given the sun position, desired angle of incidence, and the desired projection of the sun beam onto the tracker face. Development of this algorithm was inspired by the need to accurately steer a tracker to desired sun-relative positions in order to better characterize the electro-optical properties of PV and CPV modules.

  8. Particle Multiplicity in Jets and Sub-jets with Jet Axis from Color Current

    E-Print Network [OSTI]

    Wlofgang Ochs; Redamy Perez Ramos

    2008-07-07

    We study the particle multiplicity in a jet or sub-jet as derived from an energy-multiplicity 2-particle correlation. This definition avoids the notion of a globally fixed jet axis and allows for the study of smaller jet cone openings in a more stable way. The results are sensitive to the mean color current $_{A_0} $ in the jet from primary parton $A_0$ which takes into account intermediate partonic processes in the sub-jet production where $C_F_{A_0} jet axis definition are computed for multiplicities in sub-jets with different opening angles and energies by including contributions from the Modified LLA (MLLA) and Next-to-MLLA to the leading order QCD results.

  9. Method and apparatus for maintaining equilibrium in a helical axis stellarator

    DOE Patents [OSTI]

    Reiman, A.; Boozer, A.

    1984-10-31

    Apparatus for maintaining three-dimensional MHD equilibrium in a plasma contained in a helical axis stellarator includes a resonant coil system, having a configuration such that current therethrough generates a magnetic field cancelling the resonant magnetic field produced by currents driven by the plasma pressure on any given flux surface resonating with the rotational transform of another flux surface in the plasma. Current through the resonant coil system is adjusted as a function of plasma beta.

  10. Annual collectible energy of a two-axis tracking flat-plate solar collector

    SciTech Connect (OSTI)

    Attalage, R.A.; Reddy, T.A. )

    1992-01-01

    A correlation for annual collectible energy of a two-axis tracking flat-plate solar collector has been developed using simulated results based on typical meteorological year (TMY) data for 26 US locations. A preliminary validation of this correlation has been carried out with data from four Australian locations. With the advent of increasing interest in photovoltaic systems, there are a number of advantages of using a two-axis flat-plate collector. Since the tracking system is generally much cheaper than the collector panel, such a mode permits the incident solar radiation to be collected more efficiently. Incidence angle effects are minimized and, moreover, contrary to concentrating collectors, such a mode enables both the diffuse and beam components of solar radiation to be collected. In tropical locations where the diffuse fraction is generally high, this may be a great advantage. The objective of this study was to develop a correlation for the annual collectible energy of a two-axis tracking flat-plate collector.

  11. Answers to Worksheet Lessons 35 and 36, Section 3.1 of textbook 1 ...

    E-Print Network [OSTI]

    Bailey, Charlotte M

    2011-11-29

    Answers to Worksheet Lessons 35 and 36, Section 3.1 of textbook. 1). ) vertex (0, 1). ) opens upward. ) axis of symmetry: 0. ) -intercept: 1. ) -intercepts: 1, 1.

  12. Epitaxial YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}/Sr{sub 2}RuO{sub 4} heterostructures

    SciTech Connect (OSTI)

    Schlom, D.G.; Merritt, B.A.; Madhavan, S. [Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering] [and others

    1997-09-01

    The anisotropic oxide superconductors YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} and Sr{sub 2}RuO{sub 4} have been epitaxially combined in various ways (c-axis on c-axis, c-axis on a-axis, and a-axis on a-axis) though the use of appropriate substrates. Phase-pure a-axis oriented or c-axis oriented epitaxial Sr{sub 2}RuO{sub 4} films were grown by pulsed laser deposition. YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} films were then grown on both orientations of Sr{sub 2}RuO{sub 4} films and the resulting epitaxy was characterized.

  13. This page intentionally left blank. California Solar Initiative, CPUC Staff Progress Report, April 2008 2

    E-Print Network [OSTI]

    ....................................................................................................... 38 5.10 SGIP Funding and Solar Reservations as a Transition into CSI#12;This page intentionally left blank. California Solar Initiative, CPUC Staff Progress Report................................................................................................................ 5 2. Go Solar California! Overview

  14. A Recipe for Construction of the Critical Vertices for Left-Sector Stability of Interval

    E-Print Network [OSTI]

    A Recipe for Construction of the Critical Vertices for Left-Sector Stability of Interval polynomials. This paper provides a recipe for construction of these critical vertices. Illustrative examples

  15. Guidelines for left-turn bays at unsignalized access locations on arterial roadways 

    E-Print Network [OSTI]

    Hawley, Patrick Emmett

    1994-01-01

    It has long been recognized that effective access management along arterial streets can alleviate traffic congestion. A major goal within access management is to limit the speed differential between turning and through vehicles. Left-turn bays...

  16. LEFT VERSUS RIGHT HEMISPHERE DIFFERENCES IN BRAIN CONNECTIVITY: 4-TESLA HARDI TRACTOGRAPHY IN 569 TWINS

    E-Print Network [OSTI]

    Thompson, Paul

    LEFT VERSUS RIGHT HEMISPHERE DIFFERENCES IN BRAIN CONNECTIVITY: 4-TESLA HARDI TRACTOGRAPHY IN 569) and 112 adolescents (age 12-16) with 4-Tesla 105-gradient high- angular resolution diffusion imaging. We

  17. Examining Associations between Emotional Facial Expressions, Relative Left Frontal Cortical Activity, and Task Persistence 

    E-Print Network [OSTI]

    Price, Thomas

    2012-10-19

    Past research associated relative left frontal cortical activity with approach motivation, or the inclination to move toward a stimulus, as well as positive affect. Work with anger, a negative emotion often high in approach, helped clarify the role...

  18. Erratum. Search for the associated production of the Higgs boson with a top-quark pair

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

    Khachatryan, V.

    2014-10-20

    The x-axis of figure 2, lower left panel (“Lepton + ? 6 jets + 2 b-tags”) should be replaced with “3rd highest CSV output”.

  19. Erratum: Search for the associated production of the Higgs boson with a top-quark pair

    SciTech Connect (OSTI)

    Khachatryan, V.

    2014-10-20

    The x-axis of figure 2, lower left panel (“Lepton + ? 6 jets + 2 b-tags”) should be replaced with “3rd highest CSV output”.

  20. Novel properties of wave propagation in biaxially anisotropic left-handed materials

    E-Print Network [OSTI]

    Jian Qi Shen

    2003-07-05

    Some physically interesting properties and effects of wave propagation in biaxially anisotropic left-handed materials are investigated in this paper. We show that in the biaxially gyrotropic left-handed material, the left-right coupling of circularly polarized light arises due to the negative indices in permittivity and permeability tensors of gyrotropic media. It is well known that the geometric phases of photons inside a curved fiber in previous experiments often depend on the cone angles of solid angles subtended by a curve traced by the direction of wave vector of light, at the center of photon momentum space. Here, however, for the light propagating inside certain anisotropic left-handed media we will present a different geometric phase that is independent of the cone angles. The extra phases of electromagnetic wave resulting from the instantaneous helicity inversion at the interfaces between left- and right- handed (LRH) media is also studied in detail by using the Lewis-Riesenfeld invariant theory. Some interesting applications (e.g., controllable position-dependent frequency shift, detection of quantum-vacuum geometric phases and helicity reversals at the LRH interfaces etc.) of above effects and phenomena in left-handed media is briefly discussed.

  1. Defect analysis using resonant ultrasound spectroscopy 

    E-Print Network [OSTI]

    Flynn, Kevin Joseph

    2009-05-15

    ....................................................................... 6 1.3 Resonant NDT Methods....................................................................... 7 1.3.1 Impact Excitation Technique ...................................................... 7 1.3.2 Resonant Ultrasound Spectroscopy... Page Figure 3.5 First torsional mode about X axis (X Torsion 1) for samples without (left) and with (right) the notch...................................... 44 Figure 3.6 First bending mode about Y axis (Y Bend 1) for samples without (left...

  2. SU-E-J-33: Cardiac Movement in Deep Inspiration Breath-Hold for Left-Breast Cancer Radiotherapy

    SciTech Connect (OSTI)

    Kim, M; Lee, S; Suh, T

    2014-06-01

    Purpose: The present study was designed to investigate the displacement of heart using Deep Inspiration Breath Hold (DIBH) CT data compared to free-breathing (FB) CT data and radiation exposure to heart. Methods: Treatment planning was performed on the computed tomography (CT) datasets of 20 patients who had received lumpectomy treatments. Heart, lung and both breasts were outlined. The prescribed dose was 50 Gy divided into 28 fractions. The dose distributions in all the plans were required to fulfill the International Commission on Radiation Units and Measurement specifications that include 100% coverage of the CTV with ? 95% of the prescribed dose and that the volume inside the CTV receiving > 107% of the prescribed dose should be minimized. Displacement of heart was measured by calculating the distance between center of heart and left breast. For the evaluation of radiation dose to heart, minimum, maximum and mean dose to heart were calculated. Results: The maximum and minimum left-right (LR) displacements of heart were 8.9 mm and 3 mm, respectively. The heart moved > 4 mm in the LR direction in 17 of the 20 patients. The distances between the heart and left breast ranged from 8.02–17.68 mm (mean, 12.23 mm) and 7.85–12.98 mm (mean, 8.97 mm) with DIBH CT and FB CT, respectively. The maximum doses to the heart were 3115 cGy and 4652 cGy for the DIBH and FB CT dataset, respectively. Conclusion: The present study has demonstrated that the DIBH technique could help to reduce the risk of radiation dose-induced cardiac toxicity by using movement of cardiac; away from radiation field. The DIBH technique could be used in an actual treatment room for a few minutes and could effectively reduce the cardiac dose when used with a sub-device or image acquisition standard to maintain consistent respiratory motion.

  3. Dynamics of a horizontal cylinder oscillating as a wave energy converter about an off-centred axis

    E-Print Network [OSTI]

    Lucas, Jorge

    2011-11-22

    The hydrodynamic properties of a horizontal cylinder which is free to pitch about an off-centred axis are studied and used to derive the equations of motion of a wave energy converter which extracts energy from incoming ...

  4. Knot undulator to generate linearly polarized photons with low on-axis power density

    E-Print Network [OSTI]

    Qiao, S; Feng, Donglai; Hussain, Z; Shen, Z -X

    2008-01-01

    Heat load on beamline optics is a serious problem to generate pure linearly polarized photons in the third generation synchrotron radiation facilities. For permanent magnet undulators, this problem can be overcome by a figure-8 operating mode. But there is still no good method to tackle this problem for electromagnetic elliptical undulators. Here, a novel operating mode is suggested, which can generate pure linearly polarized photons with very low on-axis heat load. Also the available minimum photon energy of linearly polarized photons can be extended much by this method.

  5. The dual axis radiographic hydrodynamic test (DARHT) facility personnel safety system (PSS) control system

    SciTech Connect (OSTI)

    Jacquez, Edward B [Los Alamos National Laboratory

    2008-01-01

    The mission of the Dual Axis Radiograph Hydrodynamic Test (DARHT) Facility is to conduct experiments on dynamic events of extremely dense materials. The PSS control system is designed specifically to prevent personnel from becoming exposed to radiation and explosive hazards during machine operations and/or the firing site operation. This paper will outline the Radiation Safety System (RSS) and the High Explosive Safety System (HESS) which are computer-controlled sets of positive interlocks, warning devices, and other exclusion mechanisms that together form the PSS.

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

    E-Print Network [OSTI]

    Tullis, Stephen

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

  7. Status of Advanced Tokamak Scenario Modeling with Off-Axis Electron Cyclotron Current Drive in DIII-D

    SciTech Connect (OSTI)

    M. Murakami; H.E. St.John; T.A. Casper; M.S. Chu; J.C. DeBoo; C.M. Greenfield; J.E. Kinsey; L.L. Lao; R.J. La Haye; Y.R. Lin-Liu; T.C. Luce; P.A. Politzer; B.W. Rice; G.M. Staebler; T.S. Taylor; M.R. Wade

    1999-12-01

    The status of modeling work focused on developing the advanced tokamak scenarios in DIII-D is discussed. The objectives of the work are two-fold: (1) to develop AT scenarios with ECCD using time-dependent transport simulations, coupled with heating and current drive models, consistent with MHD equilibrium and stability; and (2) to use time-dependent simulations to help plan experiments and to understand the key physics involved. Time-dependent simulations based on transport coefficients derived from experimentally achieved target discharges are used to perform AT scenario modeling. The modeling indicates off-axis ECCD with approximately 3 MW absorbed power can maintain high-performance discharges with q{sub min} > 1 for 5 to 10 s. The resultant equilibria are calculated to be stable to n = 1 pressure driven modes. The plasma is well into the second stability regime for high-n ballooning modes over a large part of the plasma volume. The role of continuous localized ECCD is studied for stabilizing m/n = 2/1 tearing modes. The progress towards validating current drive and transport models, consistent with experimental results, and developing self-consistent, integrated high performance AT scenarios is discussed.

  8. Simulation of winds as seen by a rotating vertical axis wind turbine blade

    SciTech Connect (OSTI)

    George, R.L.

    1984-02-01

    The objective of this report is to provide turbulent wind analyses relevant to the design and testing of Vertical Axis Wind Turbines (VAWT). A technique was developed for utilizing high-speed turbulence wind data from a line of seven anemometers at a single level to simulate the wind seen by a rotating VAWT blade. Twelve data cases, representing a range of wind speeds and stability classes, were selected from the large volume of data available from the Clayton, New Mexico, Vertical Plane Array (VPA) project. Simulations were run of the rotationally sampled wind speed relative to the earth, as well as the tangential and radial wind speeds, which are relative to the rotating wind turbine blade. Spectral analysis is used to compare and assess wind simulations from the different wind regimes, as well as from alternate wind measurement techniques. The variance in the wind speed at frequencies at or above the blade rotation rate is computed for all cases, and is used to quantitatively compare the VAWT simulations with Horizontal Axis Wind Turbine (HAWT) simulations. Qualitative comparisons are also made with direct wind measurements from a VAWT blade.

  9. A multichannel magnetic probe system for analysing magnetic fluctuations in helical axis plasmas

    SciTech Connect (OSTI)

    Haskey, S. R.; Blackwell, B. D.; Seiwald, B.; Hole, M. J.; Pretty, D. G.; Howard, J.; Wach, J. [Plasma Research Laboratory, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200 (Australia)] [Plasma Research Laboratory, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200 (Australia)

    2013-09-15

    The need to understand the structure of magnetic fluctuations in H-1NF heliac [S. Hamberger et al., Fusion Technol. 17, 123 (1990)] plasmas has motivated the installation of a sixteen former, tri-axis helical magnetic probe Mirnov array (HMA). The new array complements two existing poloidal Mirnov arrays by providing polarisation information, higher frequency response, and improved toroidal resolution. The helical placement is ideal for helical axis plasmas because it positions the array as close as possible to the plasma in regions of varying degrees of favourable curvature in the magnetohydrodynamic sense, but almost constant magnetic angle. This makes phase variation with probe position near linear, greatly simplifying the analysis of the data. Several of the issues involved in the design, installation, data analysis, and calibration of this unique array are presented including probe coil design, frequency response measurements, mode number identification, orientation calculations, and mapping probe coil positions to magnetic coordinates. Details of specially designed digitally programmable pre-amplifiers, which allow gains and filters to be changed as part of the data acquisition initialisation sequence and stored with the probe signals, are also presented. The low shear heliac geometry [R. Jiménez-Gómez et al., Nucl. Fusion 51, 033001 (2011)], flexibility of the H-1NF heliac, and wealth of information provided by the HMA create a unique opportunity for detailed study of Alfvén eigenmodes, which could be a serious issue for future fusion reactors.

  10. Generation of spherically symmetric metrics in $f\\left( R\\right) $ gravity

    E-Print Network [OSTI]

    Z. Amirabi; M. Halilsoy; S. Habib Mazharimousavi

    2015-09-29

    In $D-$dimensional spherically symmetric $f\\left( R\\right) $ gravity there are three unknown functions to be determined from the fourth order differential equations. It is shown that the system remarkably integrates to relate two functions through the third one to provide reduction to second order equations accompanied with a large class of potential solutions. The third function which acts as the generator of the process is $F\\left( R\\right) =\\frac{df\\left( R\\right) }{dR}.$ As particular examples, besides known ones, we obtain new black hole solutions in any dimension $D$. We further extend our analysis to cover particularly chosen non-zero energy-momentum tensors.

  11. Generation of spherically symmetric metrics in $f\\left( R\\right) $ gravity

    E-Print Network [OSTI]

    Amirabi, Z; Mazharimousavi, S Habib

    2015-01-01

    In $D-$dimensional spherically symmetric $f\\left( R\\right) $ gravity there are three unknown functions to be determined from the fourth order differential equations. It is shown that the system remarkably integrates to relate two functions through the third one to provide reduction to second order equations accompanied with a large class of potential solutions. The third function which acts as the generator of the process is $F\\left( R\\right) =\\frac{df\\left( R\\right) }{dR}.$ As particular examples, besides known ones, we obtain new black hole solutions in any dimension $D$. We further extend our analysis to cover particularly chosen non-zero energy-momentum tensors.

  12. TU-F-17A-06: Motion Stability and Dosimetric Impact of Spirometer-Based DIBH-RT of Left-Sided Breast Cancer

    SciTech Connect (OSTI)

    McKenzie, E; Yang, W; Burnison, M; Mirhadi, A; Hakimian, B; Stephen, S; Robert, R; Yue, Y; Sandler, H; Fraass, B

    2014-06-15

    Purpose: Patients undergoing radiotherapy (RT) for left-sided breast cancer have increased risk of coronary artery disease. Deep Inhalation Breath Hold assisted RT (DIBH-RT) is shown to increase the geometric separation of the target area and heart, reducing cardiac radiation dose. The purposes of this study are to use Cine MV portal images to determine the stability of spirometer-guided DIBH-RT and examine the dosimetric cardiopulmonary impact of this technique. Methods: Twenty consecutive patients with left-sided breast cancer were recruited to the IRB-approved study. Free-breathing (FB) and DIBH-CT's were acquired at simulation. Rigid registration of the FB-CT and DIBH-CT was performed using primarily breast tissue. Treatment plans were created for each FB-CT and DIBH-CT using identical paired tangent fields with field-in-field or electronic compensation techniques. Dosimetric evaluation included mean and maximum (Dmax) doses for the left anterior descending artery (LAD), mean heart dose, and left lung V20. Cine MV portal images were acquired for medial and lateral fields during treatment. Analysis of Cine images involved chest wall segmentation using an algorithm developed in-house. Intra- and inter-fractional chest wall motion were determined through affine registration to the first frame of each Cine. Results: Dose to each cardiac structure evaluated was significantly (p<0.001) reduced with the DIBH plans. Mean heart dose decreased from 2.9(0.9–6.6) to 1.6(0.6–5.3) Gy; mean LAD dose from 16.6(3–43.6) to 7.4(1.7–32.7) Gy; and LAD Dmax from 35.4 (6.1–53) to 18.4(2.5–51.2) Gy. No statistically significant reduction was found for the left lung V20. Average AP and SI median chest wall motion (intrafractional) was 0.1 (SD=0.9) and 0.5 (SD=1.1) mm, respectively. Average AP inter-fractional chest wall motion was 2.0 (SD=1.4) mm. Conclusion: Spirometer-based DIBH treatments of the left breast are reproducible both inter- and intra-fractionally, and provide a statistically and potentially clinically useful dosimetric advantage to cardiac structures.

  13. On left Hopf algebras within the framework of inhomogeneous quantum groups for particle algebras

    SciTech Connect (OSTI)

    Rodriguez-Romo, Suemi [Facultad de Estudios Superiores Cuautitlan, Universidad Nacional Autonoma de Mexico (Mexico)

    2012-10-15

    We deal with some matters needed to construct concrete left Hopf algebras for inhomogeneous quantum groups produced as noncommutative symmetries of fermionic and bosonic creation/annihilation operators. We find a map for the bidimensional fermionic case, produced as in Manin's [Quantum Groups and Non-commutative Hopf Geometry (CRM Univ. de Montreal, 1988)] seminal work, named preantipode that fulfills all the necessary requirements to be left but not right on the generators of the algebra. Due to the complexity and importance of the full task, we consider our result as an important step that will be extended in the near future.

  14. Sustained Growth of the Ex Vivo Ablation Zones' Critical Short Axis Using Gas-cooled Radiofrequency Applicators

    SciTech Connect (OSTI)

    Rempp, Hansjoerg, E-mail: hansjoerg.rempp@med.uni-tuebingen.de [Eberhard Karls University of Tuebingen, Department of Diagnostic and Interventional Radiology (Germany); Scharpf, Marcus [Insitute of Pathology, Eberhard Karls University of Tuebingen, Department of General Pathology and Pathological Anatomy (Germany); Voigtlaender, Matthias [ERBE Elektromedizin GmbH (Germany); Schraml, Christina; Schmidt, Diethard [Eberhard Karls University of Tuebingen, Department of Diagnostic and Interventional Radiology (Germany); Fend, Falko [Insitute of Pathology, Eberhard Karls University of Tuebingen, Department of General Pathology and Pathological Anatomy (Germany); Claussen, Claus D. [Eberhard Karls University of Tuebingen, Department of Diagnostic and Interventional Radiology (Germany); Enderle, Markus D. [ERBE Elektromedizin GmbH (Germany); Pereira, Philippe L. [Klinik fuer Radiologie, Minimalinvasive Therapien und Nuklearmedizin (Germany); Clasen, Stephan [Eberhard Karls University of Tuebingen, Department of Diagnostic and Interventional Radiology (Germany)

    2011-02-15

    Purpose: To evaluate the ablation zones created with a gas-cooled bipolar radiofrequency applicator performed on ex vivo bovine liver tissue. Materials and Methods: A total of 320 ablations with an internally gas-cooled bipolar radiofrequency applicator were performed on fresh ex vivo bovine liver tissue, varying the ablation time (5, 10, 15, and 20 min), power (20, 30, 40, and 50 W), and gas pressure of the CO{sub 2} used for cooling (585, 600, 615, 630, 645 psi), leading to a total of 80 different parameter combinations. Size and shape of the white coagulation zone were assessed. Results: The largest complete ablation zone was achieved after 20 min of implementing 50 W and 645 psi, resulting in a short axis of mean 46 {+-} 1 mm and a long axis of 56 {+-} 2 mm (mean {+-} standard deviation). Short-axis diameters increased between 5 and 20 min of ablation time at 585 psi (increase of the short axis was 45% at 30 W, 29% at 40 W, and 39% at 50 W). This increase was larger at 645 psi (113% at 30 W, 67% at 40 W, and 70% at 50 W). Macroscopic assessment and NADH (nicotinamide adenine dinucleotide) staining revealed incompletely ablated tissue along the needle track in 18 parameter combinations including low-power settings (20 and 30 W) and different cooling levels and ablation times. Conclusion: Gas-cooled radiofrequency applicators increase the short-axis diameter of coagulation in an ex vivo setting if appropriate parameters are selected.

  15. Super-NOnuA: A Long-baseline neutrino experiment with two off-axis detectors

    SciTech Connect (OSTI)

    Mena Requejo, Olga; /Fermilab; Palomares-Ruiz, Sergio; /Vanderbilt U.; Pascoli, Silvia; /CERN

    2005-04-01

    Establishing the neutrino mass hierarchy is one of the fundamental questions that will have to be addressed in the next future. Its determination could be obtained with long-baseline experiments but typically suffers from degeneracies with other neutrino parameters. We consider here the NOvA experiment configuration and propose to place a second off-axis detector, with a shorter baseline, such that, by exploiting matter effects, the type of neutrino mass hierarchy could be determined with only the neutrino run. We show that the determination of this parameter is free of degeneracies, provided the ratio L/E, where L the baseline and E is the neutrino energy, is the same for both detectors.

  16. Combined Experiment Phase 1. [Horizontal axis wind turbines: wind tunnel testing versus field testing

    SciTech Connect (OSTI)

    Butterfield, C.P.; Musial, W.P.; Simms, D.A.

    1992-10-01

    How does wind tunnel airfoil data differ from the airfoil performance on an operating horizontal axis wind turbine (HAWT) The National Renewable Energy laboratory has been conducting a comprehensive test program focused on answering this question and understanding the basic fluid mechanics of rotating HAWT stall aerodynamics. The basic approach was to instrument a wind rotor, using an airfoil that was well documented by wind tunnel tests, and measure operating pressure distributions on the rotating blade. Based an the integrated values of the pressure data, airfoil performance coefficients were obtained, and comparisons were made between the rotating data and the wind tunnel data. Care was taken to the aerodynamic and geometric differences between the rotating and the wind tunnel models. This is the first of two reports describing the Combined Experiment Program and its results. This Phase I report covers background information such as test setup and instrumentation. It also includes wind tunnel test results and roughness testing.

  17. Two Molecular Models of Initial Left-Right Asymmetry Generation Michael Levin1

    E-Print Network [OSTI]

    Levin, Michael

    Two Molecular Models of Initial Left-Right Asymmetry Generation Michael Levin1 , Ph.D. and Nanette activity of Cx43 gap junctions within key cells sets up electric potentials in multi-cellular fields, thus is the most fundamental process in embryogenesis because it lays a foundation and provides a context for all

  18. Crash Analysis of Work Zone Lane Closures with Left-Hand Merge and Downstream Lane Shift

    E-Print Network [OSTI]

    See, Chen Fei

    2008-07-17

    these projects were underway, a new lane closure method, the "Iowa weave," or lane closure with a left-hand merge and lane shift, was introduced to AHTD to effectively save time ensuring that these IRP projects were completed on schedule. Contractors...

  19. An evaluation of pavement markings and raised pavement markers at left exit lane drops 

    E-Print Network [OSTI]

    Lance, Marty Tina

    1994-01-01

    Most highway engineers agree that freeway exit lane drops create problems in terms of safety and efficiency. A driver can create a hazardous situation when making a sudden lane change out of or into an exit-only lane. Since left exits already...

  20. Imaging the electromechanical wave activation of the left ventricle in vivo

    E-Print Network [OSTI]

    Konofagou, Elisa E.

    Imaging the electromechanical wave activation of the left ventricle in vivo Elisa Konofagou1, Visualsonics, Inc.) in order to better explore the electromechanical coupling within the heart muscle that through electromechanical coupling, motion estimation at high frame rates may yield a novel non

  1. WHAT IS CLIMATE CHANGE? We have left the Holocene and entered a new epoch, the

    E-Print Network [OSTI]

    Baez, John

    WHAT IS CLIMATE CHANGE? #12;We have left the Holocene and entered a new epoch, the Anthropocene, climate change is part of a more significant challenge: adapting to the Anthropocene. We can expect, when the biosphere is rapidly changing due to human activities. Global warming is just part

  2. Introduction Image models Camera coordinate space Registration and minimization What's left Who Painted this Painting?

    E-Print Network [OSTI]

    Broughton, S. Allen

    Painted this Painting? A Project in Image Registration S. Allen Broughton - Rose-Hulman Institute Registration and minimization What's left Where did this project come from? the unknown painting I received a "painting of unknown origin" which he suspects was painted by a "very famous painter". The only possible

  3. Left-Right Gauge Symmetry at the TeV Energy Scale

    E-Print Network [OSTI]

    Ernest Ma

    1994-11-28

    Two first examples beyond the standard model are given which exhibit left-right symmetry (g_L = g_R) and supersymmetry at a few TeV, together with gauge-coupling unification at around 10^{16} GeV.

  4. Determining the neutrino mass hierarchy and CP violation in NoVA with a second off-axis detector

    SciTech Connect (OSTI)

    Mena, Olga; /Fermilab; Palomares-Ruiz, Sergio; /Vanderbilt U.; Pascoli, Silvia; /CERN /Durham U., IPPP

    2005-10-01

    We consider a Super-NOVA-like experimental configuration based on the use of two detectors in a long-baseline experiment as NOVA. We take the far detector as in the present NOVA proposal and add a second detector at a shorter baseline. The location of the second off-axis detector is chosen such that the ratio L/E is the same for both detectors, being L the baseline and E the neutrino energy. We consider liquid argon and water- Cerenkov techniques for the second off-axis detector and study, for different experimental setups, the detector mass required for the determination of the neutrino mass hierarchy, for different values of {theta}{sub 13}. We also study the capabilities of such an experimental setup for determining CP-violation in the neutrino sector. Our results show that by adding a second off-axis detector a remarkable enhancement on the capabilities of the current NOVA experiment could be achieved.

  5. 3-dimensional surface imaging using Active Wavefront Sampling

    E-Print Network [OSTI]

    Frigerio, Federico, Ph. D. Massachusetts Institute of Technology

    2006-01-01

    A novel 3D surface imaging technique using Active Wavefront Sampling (AWS) is presented. In this technique, the optical wavefront traversing a lens is sampled at two or more off-axis locations and the resulting motion of ...

  6. A previously developed 3 axis mini direct drive robot has been enhanced with two additional direct drive axes for

    E-Print Network [OSTI]

    relatively heavy, high cost and complex systems, towards low mass, low cost systems with fewer functions manipulator into low earth orbit and control it from the ground to perform an end-to- end test of ground is planned to make MicroTrex an educational and motiva- tional experience for future engineers. Currently

  7. Investigating the Influence of the Added Mass Effect to Marine Hydrokinetic Horizontal-Axis Turbines Using a General Dynamic Wake Wind Turbine Code

    SciTech Connect (OSTI)

    Maniaci, D. C.; Li, Y.

    2011-10-01

    This paper describes a recent study to investigate the applicability of a horizontal-axis wind turbine (HAWT) structural dynamics and unsteady aerodynamics analysis program (FAST and AeroDyn respectively) to modeling the forces on marine hydrokinetic (MHK) turbines. This paper summarizes the added mass model that has been added to AeroDyn. The added mass model only includes flow acceleration perpendicular to the rotor disc, and ignores added mass forces caused by blade deflection. A model of the National Renewable Energy Laboratory's (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI wind turbine was analyzed using FAST and AeroDyn with sea water conditions and the new added mass model. The results of this analysis exhibited a 3.6% change in thrust for a rapid pitch case and a slight change in amplitude and phase of thrust for a case with 30{sup o} of yaw.

  8. Investigating the Influence of the Added Mass Effect to Marine Hydrokinetic Horizontal-Axis Turbines Using a General Dynamic Wake Wind Turbine Code: Preprint

    SciTech Connect (OSTI)

    Maniaci, D. C.; Li, Y.

    2012-04-01

    This paper describes a recent study to investigate the applicability of a horizontal-axis wind turbine (HAWT) structural dynamics and unsteady aerodynamics analysis program (FAST and AeroDyn respectively) to modeling the forces on marine hydrokinetic (MHK) turbines. It summarizes the added mass model that has been added to AeroDyn. The added mass model only includes flow acceleration perpendicular to the rotor disc, and ignores added mass forces caused by blade deflection. A model of the National Renewable Energy Laboratory's (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI wind turbine was analyzed using FAST and AeroDyn with sea water conditions and the new added mass model. The results of this analysis exhibited a 3.6% change in thrust for a rapid pitch case and a slight change in amplitude and phase of thrust for a case with 30 degrees of yaw.

  9. Combined effects of perfluorooctane sulfonate (PFOS) and maternal restraint stress on hypothalamus adrenal axis (HPA) function in the offspring of mice

    SciTech Connect (OSTI)

    Ribes, Diana; Fuentes, Silvia; Torrente, Margarita; Colomina, M. Teresa [Department of Psychology and Research Center for Behavioral Assessment (CRAMC), 'Rovira i Virgili' University, Sescelades Campus, 43007 Tarragona, Catalonia (Spain); Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, 'Rovira i Virgili' University, Sant Llorenc 21, 43201 Reus, Catalonia (Spain); Domingo, Jose L., E-mail: joseluis.domingo@urv.ca [Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, 'Rovira i Virgili' University, Sant Llorenc 21, 43201 Reus, Catalonia (Spain)

    2010-02-15

    Although it is known that prenatal exposure to perfluorooctane sulfonate (PFOS) can cause developmental adverse effects in mammals, the disruptive effects of this compound on hormonal systems are still controversial. Information concerning the effects of PFOS on hypothalamus adrenal (HPA) axis response to stress and corticosterone levels is not currently available. On the other hand, it is well established that stress can enhance the developmental toxicity of some chemicals. In the present study, we assessed the combined effects of maternal restraint stress and PFOS on HPA axis function in the offspring of mice. Twenty plug-positive female mice were divided in two groups. Animals were given by gavage 0 and 6 mg PFOS/kg/day on gestation days 12-18. One half of the animals in each group were also subjected to restraint stress (30 min/session, 3 sessions/day) during the same period. Five plug-positive females were also included as non-manipulated controls. At 3 months of age, activity in an open-field and the stress response were evaluated in male and female mice by exposing them to 30 min of restraint stress. Male and female offspring were subsequently sacrificed and blood samples were collected to measure changes in corticosterone levels at four different moments related to stress exposure conditions: before stress exposure, immediately after 30 min of stress exposure, and recuperation levels at 60 and 90 min after stress exposure. Results indicate corticosterone levels were lower in mice prenatally exposed to restraint. In general terms, PFOS exposure decreased corticosterone levels, although this effect was only significant in females. The recuperation pattern of corticosterone was mainly affected by prenatal stress. Interactive effects between PFOS and maternal stress were sex dependent. The current results suggest that prenatal PFOS exposure induced long-lasting effects in mice.

  10. EXAMPLES OF DAMAGE DETECTION IN REAL-LIFE SETTINGS BASED ON THE POSITION OF THE NEUTRAL AXIS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    EXAMPLES OF DAMAGE DETECTION IN REAL-LIFE SETTINGS BASED ON THE POSITION OF THE NEUTRAL AXIS discussed in this paper is to create damage detection methods based on universal parameters an appropriate parameter and validate that it can be used to detect damage in real-life settings. The centroid

  11. Field mapping by off-axis electron holography: from devices to the detection of single dopant atoms.

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    as for new innovative devices that are composed of nanowires and 2D films such as graphene. The continuous mapping, semiconductors, graphene Off-axis electron holography is a unique technique that allows be clearly resolved. Figure 2(d) shows the potential profiles of the layers compared to a HAADF intensity

  12. The off-axis jet structure in Mrk 501 at mm-wavelengths

    E-Print Network [OSTI]

    Shoko Koyama; Motoki Kino; Marcello Giroletti; Akihiro Doi; Hiroshi Nagai; Kazuhiro Hada; Kotaro Niinuma; Monica Orienti; Gabriele Giovannini; Eduardo Ros; Tuomas Savolainen; Miguel A. Pérez-Torres; Thomas P. Krichbaum

    2015-05-17

    We present results from 43 GHz (VLBA, six epochs from 2012.2 to 2013.2) and 86 GHz (GMVA, one epoch in 2012.4) observations toward the basis of the jet in the TeV Blazar Mrk 501. The 43-GHz data analysis reveals a new feature located northeast of the radio core, with a flux density of several tens of mJy, perpendicularly to the jet axis. The 86-GHz image shows the jet feature located 0.75 mas southeast of the radio core, which is consistent with the previous result. The location of Gaussian model for 0.75 mas feature does not coincide with those for the jets in the 43-GHz image, however, a distribution of emission is found. We also discuss the spectral indices of the core, the northeast feature, and the jet feature between 43 GHz and 86 GHz, which show flat-to-steep, steep, and flat-to-invert, respectively.

  13. 12CO emission from EP Aqr: Another example of an axi-symmetric AGB wind?

    E-Print Network [OSTI]

    Nhung, P T; Winters, J M; Bertre, T Le; Diep, P N; Phuong, N T; Thao, N T; Tuan-Anh, P; Darriulat, P

    2015-01-01

    The CO(1-0) and (2-1) emission of the circumstellar envelope of the AGB star EP Aqr has been observed using the IRAM PdBI and the IRAM 30-m telescope. The line profiles reveal the presence of two distinct components centered on the star velocity, a broad component extending up to ~10 km/s and a narrow component indicating an expansion velocity of ~2 km/s. An early analysis of these data was performed under the assumption of isotropic winds. The present study revisits this interpretation by assuming instead a bipolar outflow nearly aligned with the line of sight. A satisfactory description of the observed flux densities is obtained with a radial expansion velocity increasing from ~2 km/s at the equator to ~10 km/s near the poles. The angular aperture of the bipolar outflow is ~45 deg with respect to the star axis, which makes an angle of ~13 deg with the line of sight. A detailed study of the CO(1-0) to CO(2-1) flux ratio reveals a significant dependence of the temperature on the star latitude, smaller and ste...

  14. Left-right models with light neutrino mass prediction and dominant neutrinoless double beta decay rate

    E-Print Network [OSTI]

    M. K. Parida; Sudhanwa Patra

    2013-01-14

    In TeV scale left-right symmetric models, new dominant predictions to neutrinoless double beta decay and light neutrino masses are in mutual contradiction because of large contribution to the latter through popular seesaw mechanisms. We show that in a class of left-right models with high-scale parity restoration, these results coexist without any contravention with neutrino oscillation data and the relevant formula for light neutrino masses is obtained via gauged inverse seesaw mechanism. The most dominant contribution to the double beta decay is shown to be via $W^-_L- W^-_R$ mediation involving both light and heavy neutrino exchanges, and the model predictions are found to discriminate whether the Dirac neutrino mass is of quark-lepton symmetric origin or without it. We also discuss associated lepton flavor violating decays.

  15. Left-Right Symmetric Models at the High-Intensity Frontier

    E-Print Network [OSTI]

    Castillo-Felisola, Oscar; Helo, Juan C; Kovalenko, Sergey G; Ortiz, Sebastian E

    2015-01-01

    We study constraints on Left-Right Symmetric models from searches of semileptonic decays of $D$, $D_{s}$, $B$ mesons, mediated by heavy neutrinos $N$ with masses $m_N\\sim $ GeV that go on their mass shell leading to a resonant enhancement of the rates. Using these processes we examine, as a function of $m_N$ and $M_{W_R}$, the physics reach of the recently proposed high-intensity beam dump experiment SHiP, which is expected to produce a large sample of $D_s$ mesons. We compare these results with the corresponding reach of neutrinoless double beta decay experiments, as well as like-sign dilepton searches with displaced vertices at the LHC. We conclude that the SHiP experiment has clear advantages in probing the Left-Right Symmetric models for heavy neutrinos in the GeV mass range.

  16. State Legislative Reactions to No Child Left Behind: Education Leaders in Three States

    E-Print Network [OSTI]

    Collins, William Jay

    2010-07-29

    the issues…” (NCEE, 1983, p.33). Kenneth Wong suggested “NAR principles on school quality and standards play an important role in reshaping the way the federal 15 government designs its largest program in elementary and secondary education, Title I... wasted tax dollars, but wasted chances to help those most in need” (Vinovskis, 1999, p.201). Legislators, educators, parents, and students have voiced their concern that the No Child Left Behind Act (NCLB) has clearly been in need of serious repair...

  17. Left-Right Symmetry: From the LHC to Neutrinoless Double Beta Decay

    SciTech Connect (OSTI)

    Tello, Vladimir [SISSA, Trieste (Italy); Nemevsek, Miha [ICTP, Trieste (Italy); Jozef Stefan Institute, Ljubljana (Slovenia); Nesti, Fabrizio [Universita di Ferrara, Ferrara (Italy); Senjanovic, Goran [ICTP, Trieste (Italy); Vissani, Francesco [LNGS, INFN, Assergi (Italy)

    2011-04-15

    The Large Hadron Collider has the potential to probe the scale of left-right symmetry restoration and the associated lepton number violation. Moreover, it offers the hope of measuring the right-handed leptonic mixing matrix. We show how this, together with constraints from lepton flavor violating processes, can be used to make predictions for neutrinoless double beta decay. We illustrate this connection in the case of the type-II seesaw.

  18. Left-Right Symmetry: from LHC to Neutrinoless Double Beta Decay

    E-Print Network [OSTI]

    Vladimir Tello; Miha Nemevsek; Fabrizio Nesti; Goran Senjanovi?; Francesco Vissani

    2011-03-29

    The Large Hadron Collider has a potential to probe the scale of left-right symmetry restoration and the associated lepton number violation. Moreover, it offers hope of measuring the right-handed leptonic mixing matrix. We show how this, together with constraints from lepton flavor violating processes, can be used to make predictions for neutrinoless double beta decay. We illustrate this deep connection in the case of the type-II seesaw.

  19. Emissivity of neutrinos in supernova in a left-right symmetric model

    E-Print Network [OSTI]

    A. Gutierrez-Rodriguez; E. Torres-Lomas; A. Gonzalez-Sanchez

    2010-01-03

    We calculate the emissivity due to neutrino-pair production in $e^+e^-$ annihilation in the context of a left-right symmetric model in a way that can be used in supernova calculations. We also present some simple estimates which show that such process can act as an efficient energy-loss mechanism in the shocked supernova core. We find that the emissivity is dependent of the mixing angle $\\phi$ of the model in the allowed range for this parameter.

  20. Rare top quark decays in Alternative Left-Right Symmetric Models

    SciTech Connect (OSTI)

    Gaitan, R.; Miranda, O. G.; Cabral-Rosetti, L. G.

    2007-06-19

    We evaluate the flavor changing neutral currents (FCNC) decay t {yields} H0 + c in the context of Alternative Left-Right symmetric Models (ALRM) with extra isosinglet heavy fermions; the FCNC decays may place at tree level and are only supressed by the mixing between ordinary top and charm quarks. We also comment on the decay process t {yields} c + {gamma}, which involves radiative corrections.

  1. Sophie CHEMLA , Fabio GAVARINI , Niels KOWALZIG "Duality features of left Hopf algebroids"

    E-Print Network [OSTI]

    Gavarini, Fabio

    already starts on a rather fundamental level: instead of one dual, a left bialgebroid U rather possesses¨urich, 1966/67), Springer, Berlin, 1969, pp. 119­140. [B] G. B¨ohm, Hopf algebroids, in: Handbook of algebra`ebres, expos´es 4, 5, in: S´eminaire Sophus Lie, vol. 2 (1955­1956), Facult`e des Sciences de Paris, Paris

  2. Journal of Industrial and Systems Engineering Vol. 3, No. 3, pp 152-169

    E-Print Network [OSTI]

    time at Detroit airport at peak traffic periods on one of its major landing runways. Many weeks with about 3o slope from the ground. Figure 1 shows the glide path to runway 21L (reads 21 left) at Detroit

  3. 3rd Faculty 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    , THEIR MEAN AND 95X CONFIDENCE INTERVALS FOR GENERATED CONCENTRATIONS . . . 21 TABLE 2. DUNCAN'S MULTIPLE RANGE TEST FOR VARIABLE 6, REFERENCE SCALE LEFT OR RIGHT. . . 30 TABLE 3. TABLE 4. VARIABILITY OF PANELISTS. DUNCAN'S MULTIPLE RANGE TEST.... . 34 . 50 TABLE A. 2. MIRAN CALIBRATION DATA, MEDIUM 1-BUTANOL CONCENTRATIONS' . . . . . ~ . . . . . ~ . 50 TABLE A. 3. MIRAN CALIBRATION DATA, HIGH 1-BUTANOL CONCENTRATIONS' . . . . . . . . ~ - ~ ~ ~ . 52 TABLE B. l. VOLUMETRIC FLOW RATES...

  4. Improvements in dose calculation accuracy for small off-axis targets in high dose per fraction tomotherapy

    SciTech Connect (OSTI)

    Hardcastle, Nicholas; Bayliss, Adam; Wong, Jeannie Hsiu Ding; Rosenfeld, Anatoly B.; Tome, Wolfgang A.

    2012-08-15

    Purpose: A recent field safety notice from TomoTherapy detailed the underdosing of small, off-axis targets when receiving high doses per fraction. This is due to angular undersampling in the dose calculation gantry angles. This study evaluates a correction method to reduce the underdosing, to be implemented in the current version (v4.1) of the TomoTherapy treatment planning software. Methods: The correction method, termed 'Super Sampling' involved the tripling of the number of gantry angles from which the dose is calculated during optimization and dose calculation. Radiochromic film was used to measure the dose to small targets at various off-axis distances receiving a minimum of 21 Gy in one fraction. Measurements were also performed for single small targets at the center of the Lucy phantom, using radiochromic film and the dose magnifying glass (DMG). Results: Without super sampling, the peak dose deficit increased from 0% to 18% for a 10 mm target and 0% to 30% for a 5 mm target as off-axis target distances increased from 0 to 16.5 cm. When super sampling was turned on, the dose deficit trend was removed and all peak doses were within 5% of the planned dose. For measurements in the Lucy phantom at 9.7 cm off-axis, the positional and dose magnitude accuracy using super sampling was verified using radiochromic film and the DMG. Conclusions: A correction method implemented in the TomoTherapy treatment planning system which triples the angular sampling of the gantry angles used during optimization and dose calculation removes the underdosing for targets as small as 5 mm diameter, up to 16.5 cm off-axis receiving up to 21 Gy.

  5. Ubiquitous CP violation in a top-inspired left-right model

    E-Print Network [OSTI]

    Ken Kiers; Jeff Kolb; John Lee; Amarjit Soni; Guo-Hong Wu

    2002-05-08

    We explore CP violation in a Left-Right Model that reproduces the quark mass and CKM rotation angle hierarchies in a relatively natural way by fixing the bidoublet Higgs VEVs to be in the ratio m_b:m_t. Our model is quite general and allows for CP to be broken by both the Higgs VEVs and the Yukawa couplings. Despite this generality, CP violation may be parameterized in terms of two basic phases. A very interesting feature of the model is that the mixing angles in the right-handed sector are found to be equal to their left-handed counterparts to a very good approximation. Furthermore, the right-handed analogue of the usual CKM phase delta_L is found to satisfy the relation delta_R \\approx delta_L. The parameter space of the model is explored by using an adaptive Monte Carlo algorithm and the allowed regions in parameter space are determined by enforcing experimental constraints from the K and B systems. This method of solution allows us to evaluate the left- and right-handed CKM matrices numerically for various combinations of the two fundamental CP-odd phases in the model. We find that all experimental constraints may be satisfied with right-handed W and Flavour Changing Neutral Higgs masses as low as about 2 TeV and 7 TeV, respectively.

  6. CSc-165 Spring 2015 Week 2 (d) 3D / Objects / Cameras

    E-Print Network [OSTI]

    Gordon, Scott

    Teapot(Color.blue); Matrix3D teaM = teap.getLocalTranslation(); teaM.translate(-1,1,-5); teap.setLocalTranslation(tea, xEnd, Color.red, 2); Line yAxis = new Line (origin, yEnd, Color.green, 2); Line zAxis = new Line

  7. Exploring the Doubly Charged Higgs of the Left-Right Symmetric Model using Vector Boson Fusion-like Events at the LHC

    E-Print Network [OSTI]

    Bhaskar Dutta; Ricardo Eusebi; Yu Gao; Tathagata Ghosh; Teruki Kamon

    2015-06-11

    This paper studies the pair production of the doubly charged Higgs boson of the left-right symmetric models using multilepton final state in the vector boson fusion (VBF)-like processes. The study is performed in the framework consistent with the model's correction to the standard model $\\rho_{EW}$ parameter. VBF topological cuts, number of leptons in the final state and $p_T$ cuts on the leptons are found to be effective in suppressing the background. Significant mass reach can be achieved for exclusion/discovery of the doubly charge Higgs boson for the upcoming LHC run with a luminosity of $\\mathcal{O}(10^3)$ fb$^{-1}$.

  8. Structural Design of a Horizontal-Axis Tidal Current Turbine Composite Blade

    SciTech Connect (OSTI)

    Bir, G. S.; Lawson, M. J.; Li, Y.

    2011-10-01

    This paper describes the structural design of a tidal composite blade. The structural design is preceded by two steps: hydrodynamic design and determination of extreme loads. The hydrodynamic design provides the chord and twist distributions along the blade length that result in optimal performance of the tidal turbine over its lifetime. The extreme loads, i.e. the extreme flap and edgewise loads that the blade would likely encounter over its lifetime, are associated with extreme tidal flow conditions and are obtained using a computational fluid dynamics (CFD) software. Given the blade external shape and the extreme loads, we use a laminate-theory-based structural design to determine the optimal layout of composite laminas such that the ultimate-strength and buckling-resistance criteria are satisfied at all points in the blade. The structural design approach allows for arbitrary specification of the chord, twist, and airfoil geometry along the blade and an arbitrary number of shear webs. In addition, certain fabrication criteria are imposed, for example, each composite laminate must be an integral multiple of its constituent ply thickness. In the present effort, the structural design uses only static extreme loads; dynamic-loads-based fatigue design will be addressed in the future. Following the blade design, we compute the distributed structural properties, i.e. flap stiffness, edgewise stiffness, torsion stiffness, mass, moments of inertia, elastic-axis offset, and center-of-mass offset along the blade. Such properties are required by hydro-elastic codes to model the tidal current turbine and to perform modal, stability, loads, and response analyses.

  9. Feed drive modelling for the simulation of tool path tracking in multi-axis High Speed Machining

    E-Print Network [OSTI]

    Prévost, David; Lartigue, Claire; Dumur, Didier

    2011-01-01

    Within the context of High Speed Machining, it is essential to manage the trajectory generation to achieve both high surface quality and high productivity. As feed drives are one part of the set Machine tool - Numerical Controller, it is necessary to improve their performances to optimize feed drive dynamics during trajectory follow up. Hence, this paper deals with the modelling of the feed drive in the case of multi axis machining. This model can be used for the simulation of axis dynamics and tool-path tracking to tune parameters and optimize new frameworks of command strategies. A procedure of identification based on modern NC capabilities is presented and applied to industrial HSM centres. Efficiency of this modelling is assessed by experimental verifications on various representative trajectories. After implementing a Generalized Predictive Control, reliable simulations are performed thanks to the model. These simulations can then be used to tune parameters of this new framework according to the tool-pat...

  10. Near-resonant second-order nonlinear susceptibility in c-axis oriented ZnO nanorods

    SciTech Connect (OSTI)

    Liu, Weiwei; Wang, Kai; Long, Hua; Wang, Bing Lu, Peixiang; Chu, Sheng

    2014-08-18

    Near-resonant second-harmonic generation (SHG) in c-axis oriented ZnO nanorods is studied under the femtosecond laser with wavelength from 780?nm to 810?nm. A highly efficient SHG is obtained, which is attributed to the d{sub 131} component of the second-order nonlinear susceptibility. The largest d{sub 131} value is estimated to be 10.2?pm/V at the pumping wavelength of 800?nm, which indicates a large SHG response of the c-axis oriented ZnO nanorods in the near-resonant region. Theoretical calculation based on finite-difference time-domain simulation suggests a four-fold local-field enhancement of the SHG.

  11. CP violation from spin-1 resonances in a left-right dynamical Higgs context

    E-Print Network [OSTI]

    Yepes, Juan; Shu, Jing

    2015-01-01

    New physics field content in the nature, more specifically, from spin-1 resonances sourced by the extension of the SM local gauge symmetry to the larger local group $SU(2)_L\\otimes SU(2)_R\\otimes U(1)_{B-L}$, may induce CP-violation signalling NP effects from higher energy regimes. In this work we completely list and study all the CP-violating operators up to the $p^4$-order in the Lagrangian expansion, for a non-linear left-right electroweak chiral context and coupled to a light dynamical Higgs.

  12. Coffin v. Left Hand Ditch Co., 6 Colo. 443 (1882) | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (Utility Company) JumpIowa: EnergyEnergy InformationGeorgia:Coffeyv. Left

  13. Cover photo credits: Clockwise from top left Dave Marci, file photo, file photo, Blair E. Witherington. Background file photo.

    E-Print Network [OSTI]

    #12;Cover photo credits: Clockwise from top left ­ Dave Marci, file photo, file photo, Blair E. Witherington. Background ­ file photo. #12;Deepwater Horizon Oil Spill Phase II Early Restoration Plan

  14. Cover photo credits: Clockwise from top left Dave Marci, file photo, file photo, Blair E. Witherington. Background file photo.

    E-Print Network [OSTI]

    #12;#12;Cover photo credits: Clockwise from top left ­ Dave Marci, file photo, file photo, Blair E. Witherington. Background ­ file photo. #12;Deepwater Horizon Oil Spill Phase II Early Restoration Plan

  15. Rotation speed and stellar axis inclination from p modes: How CoRoT would see other suns

    E-Print Network [OSTI]

    J. Ballot; R. A. Garcia; P. Lambert

    2006-03-24

    In the context of future space-based asteroseismic missions, we have studied the problem of extracting the rotation speed and the rotation-axis inclination of solar-like stars from the expected data. We have focused on slow rotators (at most twice solar rotation speed), firstly because they constitute the most difficult case and secondly because some of the CoRoT main targets are expected to have slow rotation rates. Our study of the likelihood function has shown a correlation between the estimates of inclination of the rotation axis i and the rotational splitting deltanu of the star. By using the parameters, i and deltanu*=deltanu sin(i), we propose and discuss new fitting strategies. Monte Carlo simulations have shown that we can extract a mean splitting and the rotation-axis inclination down to solar rotation rates. However, at the solar rotation rate we are not able to correctly recover the angle i although we are still able to measure a correct deltanu* with a dispersion less than 40 nHz.

  16. The left cells with a-values 5,6 in the affine Weyl group E8 Qian Huang and Jian-yi Shi

    E-Print Network [OSTI]

    Shi, Jian Yi

    The left cells with a-values 5,6 in the affine Weyl group E8 Qian Huang and Jian-yi Shi Abstract. We describe all the left cells of a-values 5, 6 in the affine Weyl group eE8 in the paper. More precisely, we show that each of those left cells is left-connected, verifying a conjecture of Lusztig in our

  17. Anterior Myocardial Territory May Replace the Heart as Organ at Risk in Intensity-Modulated Radiotherapy for Left-Sided Breast Cancer

    SciTech Connect (OSTI)

    Tan Wenyong; Liu Dong; Xue Chenbin; Xu Jiaozhen; Li Beihui; Chen Zhengwang; Hu Desheng; Wang Xionghong

    2012-04-01

    Purpose: We investigated whether the heart could be replaced by the anterior myocardial territory (AMT) as the organ at risk (OAR) in intensity-modulated radiotherapy (IMRT) of the breast for patients with left-sided breast cancer. Methods and Materials: Twenty-three patients with left-sided breast cancer who received postoperative radiation after breast-conserving surgery were studied. For each patient, we generated five IMRT plans including heart (H), left ventricle (LV), AMT, LV+AMT, and H+LV as the primary OARs, respectively, except both lungs and right breast, which corresponded to IMRT(H), IMRT(LV), IMRT(AMT), IMRT(LV+AMT), and IMRT(H+LV). For the planning target volumes and OARs, the parameters of dose-volume histograms were compared. Results: The homogeneity index, conformity index, and coverage index were not compromised significantly in IMRT(AMT), IMRT(LV) and IMRT(LV+ AMT), respectively, when compared with IMRT(H). The mean dose to the heart, LV, and AMT decreased 5.3-21.5% (p < 0.05), 19.9-29.5% (p < 0.05), and 13.3-24.5% (p < 0.05), respectively. Similarly, the low (e.g., V5%), middle (e.g., V20%), and high (e.g., V30%) dose-volume of the heart, LV, and AMT decreased with different levels. The mean dose and V10% of the right lung increased by 9.2% (p < 0.05) and 27.6% (p < 0.05), respectively, in IMRT(LV), and the mean dose and V5% of the right breast decreased significantly in IMRT(AMT) and IMRT(LV+AMT). IMRT(AMT) was the preferred plan and was then compared with IMRT(H+LV); the majority of dose-volume histogram parameters of OARs including the heart, LV, AMT, both lungs, and the right breast were not statistically different. However, the low dose-volume of LV increased and the middle dose-volume decreased significantly (p < 0.05) in IMRT(AMT). Also, those of the right lung (V10%, V15%) and right breast (V5%, V10%) decreased significantly (p < 0.05). Conclusions: The AMT may replace the heart as the OAR in left-sided breast IMRT after breast-conserving surgery to decrease the radiation dose to the heart.

  18. Source Selection Select which source is to be displayed on the left, right, or both projector screens and/or computer monitors.

    E-Print Network [OSTI]

    Calgary, University of

    screens and/or computer monitors. · Computer: Image Left / Image Right ­ select to use the podium's built the left half of the computer's desktop or Image Right for the right half of the computer's desktop) · DVD Source Selection Select which source is to be displayed on the left, right, or both projector

  19. Nonlinear coupling of left and right handed circularly polarized dispersive Alfvén wave

    SciTech Connect (OSTI)

    Sharma, R. P., E-mail: rpsharma@ces.iitd.ac.in; Sharma, Swati, E-mail: swati.sharma704@gmail.com; Gaur, Nidhi, E-mail: nidhiphysics@gmail.com [Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016 (India)

    2014-07-15

    The nonlinear phenomena are of prominent interests in understanding the particle acceleration and transportation in the interplanetary space. The ponderomotive nonlinearity causing the filamentation of the parallel propagating circularly polarized dispersive Alfvén wave having a finite frequency may be one of the mechanisms that contribute to the heating of the plasmas. The contribution will be different of the left (L) handed mode, the right (R) handed mode, and the mix mode. The contribution also depends upon the finite frequency of the circularly polarized waves. In the present paper, we have investigated the effect of the nonlinear coupling of the L and R circularly polarized dispersive Alfvén wave on the localized structures formation and the respective power spectra. The dynamical equations are derived in the presence of the ponderomotive nonlinearity of the L and R pumps and then studied semi-analytically as well as numerically. The ponderomotive nonlinearity accounts for the nonlinear coupling between both the modes. In the presence of the adiabatic response of the density fluctuations, the nonlinear dynamical equations satisfy the modified nonlinear Schrödinger equation. The equations thus obtained are solved in solar wind regime to study the coupling effect on localization and the power spectra. The effect of coupling is also studied on Faraday rotation and ellipticity of the wave caused due to the difference in the localization of the left and the right modes with the distance of propagation.

  20. Three-dimensional structure of the flow inside the left ventricle of the human heart

    E-Print Network [OSTI]

    Fortini, S; Espa, S; Cenedese, A

    2014-01-01

    The laboratory models of the human heart left ventricle developed in the last decades gave a valuable contribution to the comprehension of the role of the fluid dynamics in the cardiac function and to support the interpretation of the data obtained in vivo. Nevertheless, some questions are still open and new ones stem from the continuous improvements in the diagnostic imaging techniques. Many of these unresolved issues are related to the three-dimensional structure of the left-ventricular flow during the cardiac cycle. In this paper we investigated in detail this aspect using a laboratory model. The ventricle was simulated by a flexible sack varying its volume in time according to a physiologically shaped law. Velocities measured during several cycles on series of parallel planes, taken from two orthogonal points of view, were combined together in order to reconstruct the phase averaged, three-dimensional velocity field. During the diastole, three main steps are recognized in the evolution of the vortical str...

  1. CCCG 2007, Ottawa, Ontario, August 2022, 2007 Computing a planar widest empty -siphon in o(n3

    E-Print Network [OSTI]

    Ben-Moshe, Boaz

    CCCG 2007, Ottawa, Ontario, August 20­22, 2007 Computing a planar widest empty -siphon in o(n3 of the corridor. Bereg et al. [2] proposed a corridor, called a siphon, where its axis is a 1-corner polygonal solution to the widest empty -siphon problem where the axis of the -siphon has the interior angle . When

  2. Method and device for determining the position of a cutting tool relative to the rotational axis of a spindle-mounted workpiece

    DOE Patents [OSTI]

    Williams, R.R.

    1980-09-03

    The present invention is directed to a method and device for determining the location of a cutting tool with respect to the rotational axis of a spindle-mounted workpiece. A vacuum cup supporting a machinable sacrificial pin is secured to the workpiece at a location where the pin will project along and encompass the rotational axis of the workpiece. The pin is then machined into a cylinder. The position of the surface of the cutting tool contacting the machine cylinder is spaced from the rotational axis of the workpiece a distance equal to the radius of the cylinder.

  3. Ferromagnetism of Fe3Sn and Alloys

    SciTech Connect (OSTI)

    Sales, Brian C [ORNL; Saparov, Bayrammurad I [ORNL; McGuire, Michael A [ORNL; Singh, David J [ORNL; Parker, David S [ORNL

    2014-01-01

    Hexagonal Fe3Sn has many of the desirable properties for a new permanent magnet phase with a Curie temperature of 725 K, a saturation moment of 1.18 MA/m. and anisotropy energy, K1 of 1.8 MJ/m3. However, contrary to earlier experimental reports, we found both experimentally and theoretically that the easy magnetic axis lies in the hexagonal plane, which is undesirable for a permanent magnet material. One possibility for changing the easy axis direction is through alloying. We used first principles calculations to investigate the effect of elemental substitutions. The calculations showed that substitution on the Sn site has the potential to switch the easy axis direction. However, transition metal substitutions with Co or Mn do not have this effect. We attempted synthesis of a number of these alloys and found results in accord with the theoretical predictions for those that were formed. However, the alloys that could be readily made all showed an in-plane easy axis. The electronic structure of Fe3Sn is reported, as are some are magnetic and structural properties for the Fe3Sn2 , and Fe5Sn3 compounds, which could be prepared as mm-sized single crystals.

  4. Phenomenological Aspects of TeV Scale Alternative Left-Right Model

    E-Print Network [OSTI]

    M. Ashry; S. Khalil

    2014-12-19

    We revisit the alternative left-right symmetric model, motivated by superstring-inspired $E_6$ model. We systematically analyze the constraints imposed by theoretical and experimental bounds on the parameter space of this class of models. We perform a comprehensive analysis of the Higgs sector and show that three neutral CP-even and two CP-odd Higgs bosons in addition to two charged Higgs bosons can be light, of ${\\cal O}(100)$ GeV. We emphasise that our model has a potential to account for the recent Large Hadron Collider results for signal strength of Higgs decays. We also explore discovery signatures of the exotic down-type quark, which is one of the salient predictions of this model.

  5. Rare top quark and Higgs boson decays in alternative left-right symmetric models

    SciTech Connect (OSTI)

    Gaitan, R.; Miranda, O.G.; Cabral-Rosetti, L.G.

    2005-08-01

    Top quark and Higgs boson decays induced by flavor-changing neutral currents (FCNC) are very much suppressed in the standard model. Their detection in colliders such as the Large Hadron Collider, Next Linear Collider, or Tevatron would be a signal of new physics. We evaluate the FCNC decays t{yields}H{sup 0}+c, t{yields}Z+c, and H{sup 0}{yields}t+c in the context of alternative left-right symmetric models with extra isosinglet heavy fermions; in this case, FCNC decays occur at tree level, and they are suppressed only by the mixing between ordinary top and charm quarks, which is poorly constrained by current experimental values. This provides the possibility for future colliders either to detect new physics or to improve present bounds on the parameters of the model.

  6. Does cellular aging relate to patterns of allostasis?. An examination of basal and stress reactive HPA axis activity and telomere length.

    E-Print Network [OSTI]

    2011-01-01

    A recipe for accelerated cellular aging? Hormones (Athens).physbeh.2011.11.016. Does cellular aging relate to patternsAllostatic load; Telomere; Cellular aging; Stress; HPA axis

  7. Use of off-axis injection as an alternative to geometrically merging beams in an energy-recovering linac

    DOE Patents [OSTI]

    Douglas, David R. (York County, VA)

    2012-01-10

    A method of using off-axis particle beam injection in energy-recovering linear accelerators that increases operational efficiency while eliminating the need to merge the high energy re-circulating beam with an injected low energy beam. In this arrangement, the high energy re-circulating beam and the low energy beam are manipulated such that they are within a predetermined distance from one another and then the two immerged beams are injected into the linac and propagated through the system. The configuration permits injection without geometric beam merging as well as decelerated beam extraction without the use of typical beamline elements.

  8. A simple reform for treating the loss of accuracy of Humlicek's W4 algorithm near the real axis

    E-Print Network [OSTI]

    Zaghloul, Mofreh R

    2015-01-01

    We present a simple reform for treating the reported problem of loss-of-accuracy near the real axis of Humlicek's w4 algorithm, widely used for the calculation of the Faddeyeva or complex probability function. The reformed routine maintains the claimed accuracy of the algorithm over a wide and fine grid that covers all the domain of the real part, x, of the complex input variable, z=x+iy, and values for the imaginary part in the range y=[10-30, 10+30

  9. Anticlinal fold axis Synclinal fold axis

    E-Print Network [OSTI]

    Keller, Ed

    16 5.22 Casitas Formation 17 5.23 Late Pleistocene Marine Terrace Deposit 18 5.24 Late Pleistocene terrace is age-dated through methods that include uranium-series analysis of sampled terrace corals, 14 C

  10. A new, very massive modular Liquid Argon Imaging Chamber to detect low energy off-axis neutrinos from the CNGS beam. (Project MODULAr)

    E-Print Network [OSTI]

    Baibussinov, B; Battistoni, G; Benetti, P; Borio, A; Calligarich, E; Cambiaghi, M; Cavanna, F; Centro, Sandro; Cocco, A G; Dolfini, R; Berzolari, A Gigli; Farnese, C; Fava, A; Ferrari, A; Fiorillo, G; Gibin, D; Guglielmi, A M; Mannocchi, G; Mauri, F; Menegolli, A; Meng, G; Montanari, C; Palamara, O; Periale, L; Piazzoli, A; Picchi, P; Pietropaolo, F; Rappoldi, A; Raselli, G L; Rubbia, Carlo; Sala, P; Satta, G; Varanini, F; Ventura, Sandro; Vignoli, C

    2007-01-01

    The paper is considering an opportunity for the CERN/GranSasso (CNGS) neutrino complex, concurrent time-wise with T2K and NOvA, to search for theta_13 oscillations and CP violation. Compared with large water Cherenkov (T2K) and fine grained scintillators (NOvA), the LAr-TPC offers a higher detection efficiency and a lower backgrounds, since virtually all channels may be unambiguously recognized. The present proposal, called MODULAr, describes a 20 kt fiducial volume LAr-TPC, following very closely the technology developed for the ICARUS-T60o, and is focused on the following activities, for which we seek an extended international collaboration: (1) the neutrino beam from the CERN 400 GeV proton beam and an optimised horn focussing, eventually with an increased intensity in the framework of the LHC accelerator improvement program; (2) A new experimental area LNGS-B, of at least 50000 m3 at 10 km off-axis from the main Laboratory, eventually upgradable to larger sizes. A location is under consideration at about ...

  11. Mechanistic modelling of 5-axis milling using an adaptive depth buffer

    E-Print Network [OSTI]

    Waterloo, University of

    . Bedia a University of Waterloo, Department of Mechanical Engineering, Waterloo, Ontario, Canada N2L 3G1 or the swept surface of the tool) is rendered using a widely available rendering engine, whereby the in-workpiece velocity is presented based on the kinematics of a tilt-rotary table configuration. The mechanistic

  12. Emergence of homeostatic epithelial packing and stress dissipation through divisions oriented along the long cell axis

    E-Print Network [OSTI]

    Wyatt, Tom P. J.; Harris, Andrew R.; Lam, Maxine; Cheng, Qian; Bellis, Julien; Dimitracopoulos, Andrea; Kabla, Alexandre J.; Charras, Guillaume T.; Baum, Buzz

    2015-04-23

    Baum2,8^* 1CoMPLEX, Gower St., London WC1E 6BT, UK; 2LMCB, UCL, Gower St., London WC1E 6BT, UK; 3London Centre for Nanotechnology, UCL, 17-19 Gordon St., London, WC1H 0AH, UK; 4Bioengineering, University of California Berkeley, Berkeley, CA, USA; 5...

  13. Cloud of strings as source in $2+1-$dimensional $f\\left( R\\right)=R^{n}$ gravity

    E-Print Network [OSTI]

    Mazharimousavi, S Habib

    2015-01-01

    We present exact solutions with possible black holes in $2+1-$dimensional $% f\\left( R\\right) =R^{n}$ gravity coupled minimally to a cloud of strings. It is shown that the rational number $n>0$ has an effective role in the geodesic confinement. The string cloud admits scalar curvature $R\\sim r^{-1/n}$ so that $f\\left( r\\right) \\sim \\frac{1}{r}$ which provides analytically a solvable potential. The resulting geodesics are investigated approximately to reveal that for $n\\leq 1$ null-geodesics escape to infinity whereas for $n>1$ they are confined.

  14. The Higgs Mass, Superconnections and the TeV-scale Left-Right Symmetric Model

    E-Print Network [OSTI]

    Aydemir, Ufuk; Sun, Chen; Takeuchi, Tatsu

    2014-01-01

    We discuss the physical implications of formulating the Standard Model (SM) in terms of the superconnection formalism involving the superalgebra su(2/1). In particular, we discuss the prediction of the Higgs mass according to the formalism and point out that it is ~170 GeV, in clear disagreement with experiment. To remedy this problem, we extend the formalism to the superalgebra su(2/2), which extends the SM to the left-right symmetric model (LRSM) and accommodates a ~126 GeV Higgs. Both the SM in the su(2/1) case and the LRSM in the su(2/2) case are argued to emerge at ~4 TeV from an underlying theory in which the spacetime geometry is modified by the addition of a discrete extra dimension. The formulation of the exterior derivative in this model space suggests a deep connection between the modified geometry, which can be described in the language of non-commutative geometry (NCG), and the spontaneous breaking of the gauge symmetries. The implication is that spontaneous symmetry breaking could actually be ge...

  15. Know before you go. Don't get left out in the cold. Prepare your vehicle for winter weather.

    E-Print Network [OSTI]

    Kavanagh, Karen L.

    Know before you go. Don't get left out in the cold. Prepare your vehicle for winter weather. Do you drive during winter? Winter weather is hard on your vehicle and its engine. Here are some tips to help tire air pressure frequently, as it decreases in cold weather. 2. Get your car winter ready

  16. Fibroblast growth factor-2 up-regulates the expression of nestin through the Ras–Raf–ERK–Sp1 signaling axis in C6 glioma cells

    SciTech Connect (OSTI)

    Chang, Kai-Wei; Huang, Yuan-Li; Wong, Zong-Ruei; Su, Peng-Han; Huang, Bu-Miin; Ju, Tsai-Kai; Technology Commons, College of Life Science, National Taiwan University, Taipei 106, Taiwan ; Yang, Hsi-Yuan

    2013-05-17

    Highlights: •Nestin expression in C6 glioma cells is induced by FGF-2. •Nestin expression is induced by FGF-2 via de novo RNA and protein synthesis. •The FGFR inhibitor SU5402 blocks the FGF-2-induced nestin expression. •The mRNA of FGFR1 and 3 are detected in C6 glioma cells. •Ras–Raf–ERK–Sp1 signaling pathway is responsibe for FGF-2-induced nestin expression. -- Abstract: Nestin is a 240-kDa intermediate filament protein expressed mainly in neural and myogenic stem cells. Although a substantial number of studies have focused on the expression of nestin during development of the central nervous system, little is known about the factors that induce and regulate its expression. Fibroblast growth factor-2 (FGF-2) is an effective mitogen and stimulates the proliferation and differentiation of a subset of nestin-expressing cells, including neural progenitor cells, glial precursor cells, and smooth muscle cells. To assess whether FGF-2 is a potent factor that induces the expression of nestin, C6 glioma cells were used. The results showed that nestin expression was up-regulated by FGF-2 via de novo RNA and protein synthesis. Our RT-PCR results showed that C6 glioma cells express FGFR1/3, and FGFRs is required for FGF-2-induced nestin expression. Further signaling analysis also revealed that FGF-2-induced nestin expression is mediated through FGFR–MAPK–ERK signaling axis and the transcriptional factor Sp1. These findings provide new insight into the regulation of nestin in glial system and enable the further studies on the function of nestin in glial cells.

  17. Saving the American Left: The Case for a New Progressive Creed http://www.cs.princeton.edu/~chazelle/politics/creed-print.html 1 of 12 4/6/2008 6:30 PM

    E-Print Network [OSTI]

    Chazelle, Bernard

    Saving the American Left: The Case for a New Progressive Creed http Saving the American Left: The Case for a New Progressive Creed by Bernard Chazelle The American left a grain of truth: Democrats are diffident, #12;Saving the American Left: The Case for a New Progressive

  18. Early time implosion symmetry from two-axis shock-timing measurements on indirect drive NIF experiments

    SciTech Connect (OSTI)

    Moody, J. D., E-mail: moody4@llnl.gov; Robey, H. F.; Celliers, P. M.; Munro, D. H.; Barker, D. A.; Baker, K. L.; Döppner, T.; Hash, N. L.; Berzak Hopkins, L.; LaFortune, K.; Landen, O. L.; LePape, S.; MacGowan, B. J.; Ralph, J. E.; Ross, J. S.; Widmayer, C. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Nikroo, A.; Giraldez, E. [General Atomics, San Diego, California 92186-5608 (United States); Boehly, T. [Laboratory for Laser Energetics, Rochester, New York 14623-1299 (United States)

    2014-09-15

    An innovative technique has been developed and used to measure the shock propagation speed along two orthogonal axes in an inertial confinement fusion indirect drive implosion target. This development builds on an existing target and diagnostic platform for measuring the shock propagation along a single axis. A 0.4?mm square aluminum mirror is installed in the ablator capsule which adds a second orthogonal view of the x-ray-driven shock speeds. The new technique adds capability for symmetry control along two directions of the shocks launched in the ablator by the laser-generated hohlraum x-ray flux. Laser power adjustments in four different azimuthal cones based on the results of this measurement can reduce time-dependent symmetry swings during the implosion. Analysis of a large data set provides experimental sensitivities of the shock parameters to the overall laser delivery and in some cases shows the effects of laser asymmetries on the pole and equator shock measurements.

  19. Super-NO{nu}A: A long-baseline neutrino experiment with two off-axis detectors

    SciTech Connect (OSTI)

    Requejo, Olga Mena [Theoretical Physics Department, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States); Palomares-Ruiz, Sergio [Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States); Pascoli, Silvia [Physics Department, Theory Division, CERN, CH-1211 Geneva 23 (Switzerland)

    2005-09-01

    Establishing the neutrino mass hierarchy is one of the fundamental questions that will have to be addressed in the near future. Its determination could be obtained with long-baseline experiments but typically suffers from degeneracies with other neutrino parameters. We consider here the NO{nu}A experiment configuration and propose to place a second off-axis detector, with a shorter baseline, such that, by exploiting matter effects, the type of neutrino mass hierarchy could be determined with only the neutrino run. We show that the determination of this parameter is free of degeneracies, provided the ratio L/E, where L is the baseline and E is the neutrino energy, is the same for both detectors.

  20. A study of pitch oscillation and roughness on airfoils used for horizontal axis wind turbines

    SciTech Connect (OSTI)

    Gregorek, G.M.; Hoffmann, M.J.; Ramsay, R.R.; Janiszewska, J.M. [Ohio State Univ., Columbus, OH (United States)

    1995-12-01

    Under subcontract XF-1-11009-3 the Ohio State University Aeronautical and Astronautical Research Laboratory (OSU/AARL) with the National Renewable Energy Laboratory (NREL) developed an extensive database of empirical aerodynamic data. These data will assist in the development of analytical models and in the design of new airfoils for wind turbines. To accomplish the main objective, airfoil models were designed, built and wind tunnel tested with and without model leading edge grit roughness (LEGR). LEGR simulates surface irregularities due to the accumulation of insect debris, ice, and/or the aging process. This report is a summary of project project activity for Phase III, which encompasses the time period from September 17, 1 993 to September 6, 1 994.

  1. The Higgs Mass, Superconnections and the TeV-scale Left-Right Symmetric Model

    E-Print Network [OSTI]

    Ufuk Aydemir; Djordje Minic; Chen Sun; Tatsu Takeuchi

    2015-03-05

    We discuss the physical implications of formulating the Standard Model (SM) in terms of the superconnection formalism involving the superalgebra su(2/1). In particular, we discuss the prediction of the Higgs mass according to the formalism and point out that it is ~170 GeV, in clear disagreement with experiment. To remedy this problem, we extend the formalism to the superalgebra su(2/2), which extends the SM to the left-right symmetric model (LRSM) and accommodates a ~126 GeV Higgs. Both the SM in the su(2/1) case and the LRSM in the su(2/2) case are argued to emerge at ~4 TeV from an underlying theory in which the spacetime geometry is modified by the addition of a discrete extra dimension. The formulation of the exterior derivative in this model space suggests a deep connection between the modified geometry, which can be described in the language of non-commutative geometry (NCG), and the spontaneous breaking of the gauge symmetries. The implication is that spontaneous symmetry breaking could actually be geometric/quantum gravitational in nature. The non-decoupling phenomenon seen in the Higgs sector can then be reinterpreted in a new light as due to the mixing of low energy (SM) physics and high energy physics associated with quantum gravity, such as string theory. The phenomenology of a TeV scale LRSM is also discussed, and we argue that some exciting discoveries may await us at the LHC, and other near-future experiments.

  2. Testing quark mixing in minimal left-right symmetric models with $b$-tags at the LHC

    E-Print Network [OSTI]

    Andrew Fowlie; Luca Marzola

    2014-11-10

    Motivated by a hint in a CMS search for right-handed $W$-bosons in $eejj$ final states, we propose an experimental test of quark-mixing matrices in a general left-right symmetric model, based on counting the numbers of $b$-tags from right-handed $W$-boson hadronic decays. We find that, with our test, differences between left- and right-handed quark-mixing matrices could be detected at the LHC with $\\sqrt{s}=14$ TeV. With an integrated luminosity of about $20/\\textrm{fb}$, our test is sensitive to right-handed quark-mixing angles as small as about $30^\\circ$ and with $3000/\\textrm{fb}$, our test's sensitivity improves to right-handed mixing angles as small as about $7.5^\\circ$. Our test's sensitivity might be further enhanced by tuning $b$-tagging efficiency against purity.

  3. Power of the point, radical axis and radical center When reading these notes, please draw pictures. They will help. If you see any

    E-Print Network [OSTI]

    Timorin, Vladlen

    Power of the point, radical axis and radical center When reading these notes, please draw pictures) is called the power of the point P with respect to the circle . The power of the point depends on the point and on the circle. However, from our definition it might seem that the power of the point P also depends

  4. Growth of c-axis oriented ZnO nanowires from aqueous solution: The decisive role of a seed layer for controlling the wires' diameter

    E-Print Network [OSTI]

    Growth of c-axis oriented ZnO nanowires from aqueous solution: The decisive role of a seed layer,c,d,Ã a Center of Materials Technology and Laser, School of Applied Technology, Technological Educational Heraklion, Crete, Greece c Institute of Electronic Structure and Laser, Foundation for Research & Technology

  5. Design, construction, and calibration of a three-axis, high-frequency magnetic probe ,,B-dot probe... as a diagnostic for exploding plasmas

    E-Print Network [OSTI]

    California at Los Angles, University of

    Design, construction, and calibration of a three-axis, high-frequency magnetic probe ,,B-dot probe is discussed in detail from its design and construction to its calibration and use as diagnostic of fast transient effects in exploding plasmas. A design and construction method is presented as a means to reduce

  6. Computation of the off-axis effective area of the New Hard X-ray Mission modules by means of an analytical approach

    E-Print Network [OSTI]

    Spiga, D

    2015-01-01

    One of the most important parameters determining the sensitivity of X-ray telescopes is their effective area as a function of the X-ray energy. The computation of the effective area of a Wolter-I mirror, with either a single layer or multilayer coating, is a very simple task for a source on-axis at astronomical distance. Indeed, when the source moves off-axis the calculation is more complicated, in particular for new hard X-ray imaging telescopes (NuSTAR, ASTRO-H, NHXM, IXO) beyond 10 keV, that will make use of multilayer coatings to extend the reflectivity band in grazing incidence. Unlike traditional single-layer coatings (in Ir or Au), graded multilayer coatings exhibit an oscillating reflectivity as a function of the incidence angle, which makes the effective area not immediately predictable for a source placed off-axis within the field of view. For this reason, the computation of the off-axis effective area has been so far demanded to ray- tracing codes, able to sample the incidence of photons onto the m...

  7. he defining element of modern wind farms is the pro-peller-like structure known as a horizontal-axis wind

    E-Print Network [OSTI]

    Dabiri, John O.

    T he defining element of modern wind farms is the pro- peller-like structure known as a horizontal-axis wind turbine.Amarvel of engineering, the HAWT typically comprises more than 8000 parts, and its blades it converts wind energy into electricity. In 1920 Albert Betz derived a theoretical limit on that efficiency

  8. Genetic and hypoxic alterations of the microRNA-210-ISCU1/2 axis promote iron-sulfur deficiency and pulmonary hypertension

    E-Print Network [OSTI]

    Dahlman, James E.

    Iron–sulfur (Fe?S) clusters are essential for mitochondrial metabolism, but their regulation in pulmonary hypertension (PH) remains enigmatic. We demonstrate that alterations of the miR?210?ISCU1/2 axis cause Fe?S deficiencies ...

  9. Is There a Relationship between the Axis Orbital Plane and the Inclination of the Maxillary Central Incisors: An in vivo Study 

    E-Print Network [OSTI]

    Merrell, P Jay

    2015-05-11

    . An anatomical face-bow (SAM Präzisionstechnik , Munchen) was used to locate arbitrary transverse mandibular axis on fifteen males and fifteen females. Photos of cast models were taken in the sagittal view of each subject mounted in the SAM III articulator...

  10. Integral-Field Spectroscopy of the Post Red Supergiant IRC +10420: evidence for an axi-symmetric wind

    E-Print Network [OSTI]

    Ben Davies; René D. Oudmaijer; Kailash C. Sahu

    2007-08-16

    We present NAOMI/OASIS adaptive-optics assisted integral-field spectroscopy of the transitional massive hypergiant IRC +10420, an extreme mass-losing star apparently in the process of evolving from a Red Supergiant toward the Wolf-Rayet phase. To investigate the present-day mass-loss geometry of the star, we study the appearance of the line-emission from the inner wind as viewed when reflected off the surrounding nebula. We find that, contrary to previous work, there is strong evidence for wind axi-symmetry, based on the equivalent-width and velocity variations of H$\\alpha$ and Fe {\\sc ii} $\\lambda$6516. We attribute this behaviour to the appearance of the complex line-profiles when viewed from different angles. We also speculate that the Ti {\\sc ii} emission originates in the outer nebula in a region analogous to the Strontium Filament of $\\eta$ Carinae, based on the morphology of the line-emission. Finally, we suggest that the present-day axisymmetric wind of IRC +10420, combined with its continued blueward evolution, is evidence that the star is evolving toward the B[e] supergiant phase.

  11. Pyroelectric-field driven defects diffusion along c-axis in ZnO nanobelts under high-energy electron beam irradiation

    SciTech Connect (OSTI)

    Ding, Yong, E-mail: yong.ding@mse.gatech.edu; Liu, Ying; Niu, Simiao; Wu, Wenzhuo; Wang, Zhong Lin [School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245 (United States)

    2014-10-21

    When ZnO nanobelts are exposed to a high-dose electron probe of several nanometers to hundred nanometers in diameter inside a transmission electron microscope, due to the radiolysis effect, part of oxygen atoms will be ejected into the vacuum and leaving a Zn-ion rich surface with a pit appearance at both the electron-entrance and electron-exit surfaces. At the same time, a temperature distribution is created around the electron probe due to local beam heating effect, which generates a unidirectional pyroelectric field. This pyroelectric field is strong enough to drive Zn ions moving along its positive c-axis direction as interstitial ions. In the first case, for the ZnO nanobelts with c-axis lie in their large surfaces, defects due to the aggregation of Zn interstitial ions will be formed at some distances of 30–50 nm approximately along the c-axis direction from the electron beam illuminated area. Alternatively, for the ZnO nanobelts with ±(0001) planes as their large surfaces, the incident electron beam is along its c-axis and the generated pyroelectric field will drive the interstitial Zn-ions to aggregate at the Zn terminated (0001) surface where the local electrical potential is the lowest. Such electron beam induced damage in ZnO nanostructures is suggested as a result of Zn ion diffusion driven by the temperature gradient induced pyroelectric field along c-axis. Our study shows a radiation damage caused by electron beam in transmission electron microscopy, especially when the electron energy is high.

  12. Role of structural factors in formation of chiral magnetic soliton lattice in Cr{sub 1/3}NbS?

    SciTech Connect (OSTI)

    Volkova, L. M.; Marinin, D. V.

    2014-10-07

    The sign and strength of magnetic interactions not only between nearest neighbors, but also for longer-range neighbors in the Cr{sub 1/3}NbS? intercalation compound have been calculated on the basis of structural data. It has been found that left-handed spin helices in Cr{sub 1/3}NbS? are formed from strength-dominant at low temperatures antiferromagnetic (AFM) interactions between triangular planes of Cr³? ions through the plane of just one of two crystallographically equivalent diagonals of side faces of embedded into each other trigonal prisms building up the crystal lattice of magnetic Cr³? ions. These helices are oriented along the c axis and packed into two-dimensional triangular lattices in planes perpendicular to these helices directions and lay one upon each other with a displacement. The competition of the above AFM helices with weaker inter-helix AFM interactions could promote the emergence of a long-period helical spin structure. One can assume that in this case, the role of Dzyaloshinskii-Moriya interaction consists of final ordering and stabilization of chiral spin helices into a chiral magnetic soliton lattice. The possibility of emergence of solitons in M{sub 1/3}NbX{sub 2} and M{sub 1/3}TaX? (M = Cr, V, Ti, Rh, Ni, Co, Fe, and Mn; X = S and Se) intercalate compounds has been examined. Two important factors caused by the crystal structure (predominant chiral magnetic helices and their competition with weaker inter-helix interactions not destructing the system quasi-one-dimensional character) can be used for the crystal chemistry search of solitons.

  13. SU-E-T-361: Clinical Benefit of Automatic Beam Gating Mixed with Breath Hold in Radiation Therapy of Left Breast

    SciTech Connect (OSTI)

    Wu, J; Hill, G; Spiegel, J; Ye, J; Mehta, V

    2014-06-01

    Purpose: To investigate the clinical and dosimetric benefits of automatic gating of left breast mixed with breath-hold technique. Methods: Two Active Breathing Control systems, ABC2.0 and ABC3.0, were used during simulation and treatment delivery. The two systems are different such that ABC2.0 is a breath-hold system without beam control capability, while ABC3.0 has capability in both breath-hold and beam gating. At simulation, each patient was scanned twice: one with free breathing (FB) and one with breath hold through ABC. Treatment plan was generated on the CT with ABC. The same plan was also recalculated on the CT with FB. These two plans were compared to assess plan quality. For treatments with ABC2.0, beams with MU > 55 were manually split into multiple subfields. All subfields were identical and shared the total MU. For treatment with ABC3.0, beam splitting was unnecessary. Instead, treatment was delivered in gating mode mixed with breath-hold technique. Treatment delivery efficiency using the two systems was compared. Results: The prescribed dose was 50.4Gy at 1.8Gy/fraction. The maximum heart dose averaged over 10 patients was 46.0±2.5Gy and 24.5±12.2Gy for treatments with FB and with ABC respectively. The corresponding heart V10 was 13.2±3.6% and 1.0±1.6% respectively. The averaged MUs were 99.8±7.5 for LMT, 99.2±9.4 for LLT. For treatment with ABC2.0, normally the original beam was split into 2 subfields. The averaged total time to delivery all beams was 4.3±0.4min for treatments with ABC2.0 and 3.3±0.6min for treatments with ABC3.0 in gating mode. Conclusion: Treatment with ABC tremendously reduced heart dose. Compared to treatments with ABC2.0, gating with ABC3.0 reduced the total treatment time by 23%. Use of ABC3.0 improved the delivery efficiency, and eliminated the possibility of mistreatments. The latter may happen with ABC2.0 where beam is not terminated when breath signal falls outside of the treatment window.

  14. Local and global information and equations with left and right invertible operators in the free Fock space

    E-Print Network [OSTI]

    Jerzy Hanckowiak

    2011-12-07

    The subject of the work is short description of huge amount of n-point information (n-pi) about the system. Methods for solving equations that satisfy such information are considered. Possible interpretation of left and right invertible operators appearing in these equations is also proposed. For local information, the creation and annihilation operators satisfying the Cuntz relations are introduced. It is also introduced the vector describing the local vacuum which completes the equation for n-pi with a global information. An important components of the work are examples of local operator-valued functions.

  15. Left-Right Symmetric Model from Geometrical Formulation of Gauge Theory in $M_4 \\times Z_2 \\times Z_2$

    E-Print Network [OSTI]

    G. Konisi; T. Saito; Z. Maki; M. Nakahara

    1998-12-08

    The left-right symmetric model (LRSM) with gauge group $SU(2)_{L} \\times SU(2)_{R} \\times U(1)_{B-L}$ is reconstructed from the geometric formulation of gauge theory in $M_4 \\times Z_2 \\times Z_2$ where $M_4$ is the four-dimensional Minkowski space and $Z_2 \\times Z_2$ the discrete space with four points. The geometrical structure of this model becomes clearer compared with other works based on noncommutative geometry. As a result, the Yukawa coupling terms and the Higgs potential are derived in more restricted forms than in the standard LRSM.

  16. Notes on ICNS 100 Chapter 3: 3.2 Applications and Linear Functions

    E-Print Network [OSTI]

    Santipach, - Wiroonsak

    (5) Notes on ICNS 100 Chapter 3: 3.2 Applications and Linear Functions 1. Law of Demand: For each will the quantity supplied. Therefore, a supply curve usually rises from left to right. 3. A function f is a linear and a = 0. Example Find f(x) if f is a linear function that has the given properties. (a) slope = -2 and f

  17. 2001 Proceedingsof the 23rd Annual EMBS International Conference, October 25-28, Istanbul, Turkey QUANTIFICATIONOF RIGHT AND LEFT VENTRICULAR FUNCTION

    E-Print Network [OSTI]

    pumping function on the right side while, at least in the initial phase of the condition, the left introduced by the 1:16 downsampling scheme for the (transmitterheceiver) volumetric scanning. We have

  18. [1] Gregor V. Bochmann. Semantics evaluation from left to right. Communications of the ACM,

    E-Print Network [OSTI]

    Spirtes, Peter

    {038, Carnegie Mellon University, Pittsburgh, November 1987. [15] Frank Pfenning and Conal Elliott. Higher on attribute grammars. SIGPLAN Notices, 15(3):35{44, 1980. [18] Thomas Reps and Tim Teitelbaum. The synthe, pages 42{48, ACM, 1984. In: SIG- PLAN Notices 19(5). [19] Thomas Reps, Tim Teitelbaum, and Alan De- mers

  19. Metaphor, Morality, and Politics, Or, Why Conservatives Have Left Liberals in the Dust

    E-Print Network [OSTI]

    Lakoff, George

    1995-01-01

    H:H. :HHHHH 5H. H~n.RHHu:HHo: HES 3.5 mmaosa H:.H:aHH.Ha.Oooasamm oHHo:. €HHHHa. ao:mowHHo=u m HH? H9. : HHH.m. m§§m§ m:

  20. Magnetic rotation (MR) band crossing in N=78 odd-Z nuclei: Tilted axis cranking (TAC) calculations to explore the role of nucleons

    SciTech Connect (OSTI)

    Kumar, Suresh

    2014-08-14

    Magnetic Rotation (MR) band crossing is studied systematically in N=78 isotones (La, Pr, Pm and Eu) using Tilted Axis Cranking (TAC) model. The observables such as I(¯h) vs ¯h?, excitation energy E(MeV) vs spin I(¯h), and the B(M1)/B(E2) vs I(¯h) were considered to pinpoint MR crossing in these nuclei. The results of tilted axis cranking were compared with these experimental observables. The B(M1) and B(E2) values were also reported and used to understand the crossing behaviour of these MR bands. The systematic evolution of this phenomenon in N=78 odd-Z istotones leads to understand the role of nucleons in MR band crossing.

  1. Magnetization reversal induced by in-plane current in Ta/CoFeB/MgO structures with perpendicular magnetic easy axis

    SciTech Connect (OSTI)

    Zhang, C.; Yamanouchi, M. Ikeda, S.; Sato, H.; Fukami, S.; Matsukura, F.; Ohno, H.

    2014-05-07

    We investigate in-plane current-induced magnetization reversal under an in-plane magnetic field in Hall bar shaped devices composed of Ta/CoFeB/MgO structures with perpendicular magnetic easy axis. The observed relationship between the directions of current and magnetization switching and Ta thickness dependence of magnetization switching current are accordance with those for magnetization reversal by spin transfer torque originated from the spin Hall effect in the Ta layer.

  2. Determining the neutrino mass hierarchy and CP-violation in NO{nu}A with a second off-axis detector

    SciTech Connect (OSTI)

    Mena, Olga [Theoretical Physics Department, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States); Palomares-Ruiz, Sergio [Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States); Pascoli, Silvia [Physics Department, Theory Division, CERN, CH-1211 Geneva 23 (Switzerland); IPPP, Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)

    2006-04-01

    We consider a Super-NO{nu}A-like experimental configuration based on the use of two detectors in a long-baseline experiment as NO{nu}A. We take the far detector as in the present NO{nu}A proposal and add a second detector at a shorter baseline. The location of the second off-axis detector is chosen such that the ratio L/E is the same for both detectors, being L the baseline and E the neutrino energy. We consider liquid argon and water-Cerenkov techniques for the second off-axis detector and study, for different experimental setups, the detector mass required for the determination of the neutrino mass hierarchy, for different values of {theta}{sub 13}. We also study the capabilities of such an experimental setup for determining CP-violation in the neutrino sector. Our results show that by adding a second off-axis detector a remarkable enhancement on the capabilities of the current NO{nu}A experiment could be achieved.

  3. Build-to-Last: Strength to Weight 3D Printed Objects Andrei Sharf2

    E-Print Network [OSTI]

    Sharf, Andrei

    The emergence of low-cost 3D printers steers the investigation of new geometric problems that controlBuild-to-Last: Strength to Weight 3D Printed Objects Lin Lu1 Andrei Sharf2 Haisen Zhao1 Yuan Wei1 Ben-Gurion University 3 Tel Aviv University Figure 1: We reduce the material of a 3D kitten (left

  4. SU-E-J-32: Calypso(R) and Laser-Based Localization Systems Comparison for Left-Sided Breast Cancer Patients Using Deep Inspiration Breath Hold

    SciTech Connect (OSTI)

    Robertson, S; Kaurin, D; Sweeney, L; Kim, J; Fang, L; Tran, A; Holloway, K

    2014-06-01

    Purpose: Our institution uses a manual laser-based system for primary localization and verification during radiation treatment of left-sided breast cancer patients using deep inspiration breath hold (DIBH). This primary system was compared with sternum-placed Calypso(R) beacons (Varian Medical Systems, CA). Only intact breast patients are considered for this analysis. Methods: During computed tomography (CT) simulation, patients have BB and Calypso(R) surface beacons positioned sternally and marked for free-breathing and DIBH CTs. During dosimetry planning, BB longitudinal displacement between free breathing and DIBH CT determines laser mark (BH mark) location. Calypso(R) beacon locations from the DIBH CT are entered at the Tracking Station. During Linac simulation and treatment, patients inhale until the cross-hair and/or lasers coincide with the BH Mark, which can be seen using our high quality cameras (Pelco, CA). Daily Calypso(R) displacement values (difference from the DIBH-CT-based plan) are recorded.The displacement mean and standard deviation was calculated for each patient (77 patients, 1845 sessions). An aggregate mean and standard deviation was calculated weighted by the number of patient fractions.Some patients were shifted based on MV ports. A second data set was calculated with Calypso(R) values corrected by these shifts. Results: Mean displacement values indicate agreement within 1±3mm, with improvement for shifted data (Table). Conclusion: Both unshifted and shifted data sets show the Calypso(R) system coincides with the laser system within 1±3mm, demonstrating either localization/verification system will Resultin similar clinical outcomes. Displacement value uncertainty unilaterally reduces when shifts are taken into account.

  5. KT Monograph Section E9 Bone Objects Tables 1-3

    E-Print Network [OSTI]

    Baker, P.

    2004-12-09

    stream_source_info E09_Tables_1-3.pdf.txt stream_content_type text/plain stream_size 1728 Content-Encoding ISO-8859-1 stream_name E09_Tables_1-3.pdf.txt Content-Type text/plain; charset=ISO-8859-1 Side Total Species Female? Male... ? Indeterminate left right left right left right Goat, Capra hircus 1 21 25 47 (cf. Capra hircus 3 5 8) (cf. cf. Capra hircus 4 4) Sheep, Ovis aries 3 6 7 8 10 34 (cf. Ovis aries 1 2 2 3 8) (cf. cf. Ovis aries 1 1 3 5 10) Sheep/goat 7 9 16 Fallow deer, cf...

  6. nature photonics | VOL 3 | SEPTEMBER 2009 | www.nature.com/naturephotonics 503 review article

    E-Print Network [OSTI]

    Wang, Lihong

    to as optoacoustic tomography, is the cross-sectional or three-dimensional (3D) imaging of a material using in vivo in optically scattering biological tissue at unprecedented depths. Although structural imaging to the acoustic axis16­20 . To obtain cross- sectional or 3D images that are resolved both axially and laterally

  7. Static Ocular Counterroll Is Implemented Through the 3-D Neural Integrator J. Douglas Crawford,13

    E-Print Network [OSTI]

    Vilis, Tutis

    report Static Ocular Counterroll Is Implemented Through the 3-D Neural Integrator J. Douglas. Static ocular counterroll is implemented through the 3-D neural integrator. J Neurophysiol 90: 2777­2784, 2003; 10.1152/jn.00231.2003. Static head roll about the naso-occipital axis is known to produce an oppo

  8. MEEG 435/667 Wind Power Engineering (3 credits) Spring Semester 2008

    E-Print Network [OSTI]

    Firestone, Jeremy

    energy. The wind resource. 2. Historical overview; horizontal vs. vertical axis machines; modern "Danish" wind turbine. 3. Mass, momentum and energy balances; actuator-disk theory; Betz limit. DimensionalMEEG 435/667 Wind Power Engineering (3 credits) Spring Semester 2008 Prof. Len Schwartz SPL 309

  9. P-Violation Manifested at the Molecular Level - A Simple Means for an Absolute Definition of "Left" vs. "Right"

    E-Print Network [OSTI]

    Elizur, A C; Elizur, Avshalom C.; Shinitzky, Meir

    2006-01-01

    P-violation of the nuclear weak force was hitherto believed to manifest itself only in asymmetric $\\beta$-emission due to neutron decay. Molecules with space asymmetry (like L and D amino acids) are affected by this parity violation, yielding a parity violation energy difference (PVED) between chiral isomers in the order of $10^{-16}$ ev. In specific cases, where an autocatalytic process is combined with interaction with a selective spin isomer of H$_2$O, this tiny PVED can be amplified to a macroscopic detectable level. We describe such a system through which one can transmit a universal definition of "left" and "right." The procedure is straightforward, yielding an absolute rather than a statistical definition. The argument is illustrated by paraphrasing Feynman's celebrated thought-experiment of communicating spatial directions to an alien.

  10. A Multi-axis Compact Positioner with a 6-coil Platen Moving Over a Superimposed Halbach Magnet Matrix 

    E-Print Network [OSTI]

    Nguyen, Vu Huy

    2012-07-16

    by Won-jong Kim at Massachusetts Institute of Technology in 1997 [1]. Figure 1-3 below describes the structure of the positioning system. In this design, the winding is stationary and the permanent magnet arrays are attached to the moving platen.... There are totally 4 motors; each has 3 phases with 11 windings per phase. Each 5 motor is to generate two force components, one in the z-direction and the other one in the x-direction or the y-direction. Figure 1-3: Structure of the design with four motors...

  11. Magnetic phase diagram of Tb{sub 3}Co

    SciTech Connect (OSTI)

    Baranov, N.V.; Markin, P.E.; Nakotte, H.; Lacerda, A.

    1997-08-01

    The orthorhombic Tb{sub 3}Co compound exhibits both ferromagnetic and antiferromagnetic behavior below the critical temperature T{sub t} = 72 K as evidenced by metamagnetic transitions along the a- and b-axes and ferromagnetic magnetization process along the c-axis. In the temperature interval between T{sub t} and the Neel temperature T{sub N} = 82 field-induced transitions along all three axes are observed. This behavior results from the complex noncomplanar magnetic structure of Tb{sub 3}Co. The metamagnetic transitions are accompanied by a significant magnetoresistance effect. The Tb{sub 3}Co single crystal has permanent magnet properties along the c-axis with the highest energy up to 140 Mg Oe at T < 4.2 K.

  12. Quantitative modeling of the accuracy in registering preoperative patient-specific anatomic models into left atrial cardiac ablation procedures

    SciTech Connect (OSTI)

    Rettmann, Maryam E. Holmes, David R.; Camp, Jon J.; Cameron, Bruce M.; Robb, Richard A.; Kwartowitz, David M.; Gunawan, Mia; Johnson, Susan B.; Packer, Douglas L.; Dalegrave, Charles; Kolasa, Mark W.

    2014-02-15

    Purpose: In cardiac ablation therapy, accurate anatomic guidance is necessary to create effective tissue lesions for elimination of left atrial fibrillation. While fluoroscopy, ultrasound, and electroanatomic maps are important guidance tools, they lack information regarding detailed patient anatomy which can be obtained from high resolution imaging techniques. For this reason, there has been significant effort in incorporating detailed, patient-specific models generated from preoperative imaging datasets into the procedure. Both clinical and animal studies have investigated registration and targeting accuracy when using preoperative models; however, the effect of various error sources on registration accuracy has not been quantitatively evaluated. Methods: Data from phantom, canine, and patient studies are used to model and evaluate registration accuracy. In the phantom studies, data are collected using a magnetically tracked catheter on a static phantom model. Monte Carlo simulation studies were run to evaluate both baseline errors as well as the effect of different sources of error that would be present in a dynamicin vivo setting. Error is simulated by varying the variance parameters on the landmark fiducial, physical target, and surface point locations in the phantom simulation studies. In vivo validation studies were undertaken in six canines in which metal clips were placed in the left atrium to serve as ground truth points. A small clinical evaluation was completed in three patients. Landmark-based and combined landmark and surface-based registration algorithms were evaluated in all studies. In the phantom and canine studies, both target registration error and point-to-surface error are used to assess accuracy. In the patient studies, no ground truth is available and registration accuracy is quantified using point-to-surface error only. Results: The phantom simulation studies demonstrated that combined landmark and surface-based registration improved landmark-only registration provided the noise in the surface points is not excessively high. Increased variability on the landmark fiducials resulted in increased registration errors; however, refinement of the initial landmark registration by the surface-based algorithm can compensate for small initial misalignments. The surface-based registration algorithm is quite robust to noise on the surface points and continues to improve landmark registration even at high levels of noise on the surface points. Both the canine and patient studies also demonstrate that combined landmark and surface registration has lower errors than landmark registration alone. Conclusions: In this work, we describe a model for evaluating the impact of noise variability on the input parameters of a registration algorithm in the context of cardiac ablation therapy. The model can be used to predict both registration error as well as assess which inputs have the largest effect on registration accuracy.

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

    E-Print Network [OSTI]

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

    2014-12-15

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

  14. Highly c-axis oriented GaN films grown on free-standing diamond substrates for high-power devices

    SciTech Connect (OSTI)

    Zhang, D. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China) [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian 116024 (China); Bian, J.M., E-mail: jmbian@dlut.edu.cn [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Qin, F.W.; Wang, J.; Pan, L. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China) [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian 116024 (China); Zhao, J.M. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)] [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Zhao, Y.; Bai, Y.Z. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China) [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian 116024 (China); Du, G.T. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)] [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

    2011-10-15

    Highlights: {yields} GaN films are deposited on diamond substrates by ECR-PEMOCVD. {yields} Influence of deposition temperature on the properties of samples is investigated. {yields} Properties of GaN films are dependent on the deposition temperature. -- Abstract: GaN films with highly c-axis preferred orientation are deposited on free-standing thick diamond films by low temperature electron cyclotron resonance plasma enhanced metal organic chemical vapor deposition (ECR-PEMOCVD). The TMGa and N{sub 2} are applied as precursors of Ga and N, respectively. The quality of as-grown GaN films are systematically investigated as a function of deposition temperature by means of X-ray diffraction (XRD) analysis, Hall Effect measurement (HL), room temperature photoluminescence (PL) and atomic force microscopy (AFM). The results show that the dense and uniformed GaN films with highly c-axis preferred orientation are successfully achieved on free-standing diamond substrates under optimized deposition temperature of 400 {sup o}C, and the room temperature PL spectra of the optimized GaN film show a intense ultraviolet near band edge emission and a weak yellow luminescence. The obtained GaN/diamond structure has great potential for the development of high-power semiconductor devices due to its excellent heat dissipation nature.

  15. Left lane road electrification

    E-Print Network [OSTI]

    Llanes-Estrada, Felipe J

    2010-01-01

    We propose the partial electrification of multilane motorways in suburban areas as a practical alternative in order to reduce the weight and price of electrically-powered automobiles. These could then be supplied energy en-route, thus significantly reducing the weight and cost of vehicle-mounted batteries. Our theoretical study is based on the circumstances of Madrid (Spain), a six million inhabitant region, but should be easily adaptable to other metropolitan areas.

  16. Rescuing Those Left Behind. Recovering and Characterizing Underdigested Membrane and Hydrophobic Proteins To Enhance Proteome Measurement Depth

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

    Giannone, Richard J.; Wurch, Louie L.; Podar, Mircea; Hettich, Robert L.

    2015-07-21

    The marine archaeon Nanoarchaeum equitans is dependent on direct physical contact with its host, the hyperthermophile Ignicoccus hospitalis. This interaction is thought to be membrane-associated, involving a myriad of membrane-anchored proteins; proteomic efforts to better characterize this difficult to analyze interface are paramount to uncovering the mechanism of their association. By extending multienzyme digestion strategies that use sample filtration to recover underdigested proteins for reprocessing/consecutive proteolytic digestion, we applied chymotrypsin to redigest the proteinaceous material left over after initial proteolysis with trypsin of sodium dodecyl sulfate (SDS)-extracted I. hospitalis-N. equitansproteins. We show that proteins with increased hydrophobic character, including membranemore »proteins with multiple transmembrane helices, are enriched and recovered in the underdigested fraction. Chymotryptic reprocessing provided significant sequence coverage gains in both soluble and hydrophobic proteins alike, with the latter benefiting more so in terms of membrane protein representation. These gains were despite a large proportion of high-quality peptide spectra remaining unassigned in the underdigested fraction suggesting high levels of protein modification on these often surface-exposed proteins. Importantly, these gains were achieved without applying extensive fractionation strategies usually required for thorough characterization of membrane-associated proteins and were facilitated by the generation of a distinct, complementary set of peptides that aid in both the identification and quantitation of this important, under-represented class of proteins.« less

  17. Discrete Mathematics and Theoretical Computer Science DMTCS vol. (subm.), by the authors, 11 Left and right length of paths in binary trees

    E-Print Network [OSTI]

    Panholzer, Alois

    Discrete Mathematics and Theoretical Computer Science DMTCS vol. (subm.), by the authors, 1­1 Left and right length of paths in binary trees or on a question of Knuth Alois Panholzer1 1 Institut f, Austria. {Alois.Panholzer}@tuwien.ac.at We consider extended binary trees and study the common right

  18. ERPs to the main-clause verb in both SR and OR sentences showed a greater left anterior negativity than the second verb in

    E-Print Network [OSTI]

    Lewis, Richard

    ERPs to the main-clause verb in both SR and OR sentences showed a greater left anterior negativity, we would like to point out that the ERP studies cited above also include notable demonstrations large ERP differences between SR and OR sentence types, whereas poorer comprehenders show almost none

  19. In Table 3, the equivalent Tambient that would be supplied by the sensor, appears to the left, and food heights, the only variable available to

    E-Print Network [OSTI]

    Heller, Barbara

    , etc. Storage · Covered/ uncovered · Food depth · Pan size · Stacking Food · Soups, meats, casseroles of handling, resistance to freezing, and conduction-ba

  20. Neutrino mass mechanisms in 3-3-1 models: A short review

    E-Print Network [OSTI]

    C. A. de S. Pires

    2014-12-03

    In this paper we review some mechanisms that provide light neutrinos in the framework of 3-3-1 gauge models without exotic leptons. In regard to the minimal 3-3-1 model, we call the attention to the fact that the perturbative regime of the model goes until 5 TeV. This requires alternative mechanisms in order to generate light neutrinos. In this review we discuss two mechanisms capable of generating light neutrinos in the framework of the minimal 3-3-1 model. In regard to the 3-3-1 model with right-handed neutrinos, we call the attention to the fact that in it mechanisms that generate light left-handed neutrinos also generate light right-handed neutrinos. Finally, we call the attention to the fact that the 3-3-1 model with right-handed neutrinos accommodate naturally the inverse seesaw mechanism.

  1. Proceedings of the 3rd International Conference on Information Systems, Logistics and Supply Chain

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Proceedings of the 3rd International Conference on Information Systems, Logistics and Supply-16 Sustainable supply chain management in city logistics solutions: an experience's comeback from Cityporto Padua.gonzales-feliu}@let.ish-lyon.cnrs.fr Abstract : The sustainable logistics and transportation studies constitute a primordial research axis

  2. A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study.

    SciTech Connect (OSTI)

    Bull, Diana L; Fowler, Matthew; Goupee, Andrew

    2014-08-01

    This analysis utilizes a 5 - MW VAWT topside design envelope created by Sandia National Laborator ies to compare floating platform options fo r each turbine in the design space. The platform designs are based on two existing designs, the OC3 Hywind spar - buoy and Principal Power's WindFloat semi - submersible. These designs are scaled using Froude - scaling relationships to determine an appropriately sized spar - buoy and semi - submersible design for each topside. Both the physical size of the required platform as well as mooring configurations are considered. Results are compared with a comparable 5 - MW HAWT in order to identify potential differences in the platform and mooring sizing between the VAWT and HAWT . The study shows that there is potential for cost savings due to reduced platform size requirements for the VAWT.

  3. Males showed no response to air-borne female Experimental Protocol: Prior to the first trial, the first female was placed in the cube on the left maze arm.

    E-Print Network [OSTI]

    Gaffin, Doug

    to the first trial, the first female was placed in the cube on the left maze arm. Each trial was initiated by dropping a male scorpion into the end of the long arm. Males were allowed five minutes to move into the left or right arm of the arena. We considered a trial complete when the male scorpion entered either

  4. 280 BULLETIN OF THE UNITED STATES FISH COMMISSIOX. over the edge of the barrel, wliile the other is left hanging in the water.

    E-Print Network [OSTI]

    is left hanging in the water. After stopping the pressurc of tbe fingers the water flows from the free . end of the rubber tube and is allowed to flow through a filter (a piece of coarse ljnen,a p6ckt.t-l1nndlrei.chief,&e.). The larv83 :we carried by the current of' the water iiito and through the rubber tube

  5. Assessment of dedicated low-dose cardiac micro-CT reconstruction algorithms using the left ventricular volume of small rodents as a performance measure

    SciTech Connect (OSTI)

    Maier, Joscha; Sawall, Stefan; Kachelrieß, Marc

    2014-05-15

    Purpose: Phase-correlated microcomputed tomography (micro-CT) imaging plays an important role in the assessment of mouse models of cardiovascular diseases and the determination of functional parameters as the left ventricular volume. As the current gold standard, the phase-correlated Feldkamp reconstruction (PCF), shows poor performance in case of low dose scans, more sophisticated reconstruction algorithms have been proposed to enable low-dose imaging. In this study, the authors focus on the McKinnon-Bates (MKB) algorithm, the low dose phase-correlated (LDPC) reconstruction, and the high-dimensional total variation minimization reconstruction (HDTV) and investigate their potential to accurately determine the left ventricular volume at different dose levels from 50 to 500 mGy. The results were verified in phantom studies of a five-dimensional (5D) mathematical mouse phantom. Methods: Micro-CT data of eight mice, each administered with an x-ray dose of 500 mGy, were acquired, retrospectively gated for cardiac and respiratory motion and reconstructed using PCF, MKB, LDPC, and HDTV. Dose levels down to 50 mGy were simulated by using only a fraction of the projections. Contrast-to-noise ratio (CNR) was evaluated as a measure of image quality. Left ventricular volume was determined using different segmentation algorithms (Otsu, level sets, region growing). Forward projections of the 5D mouse phantom were performed to simulate a micro-CT scan. The simulated data were processed the same way as the real mouse data sets. Results: Compared to the conventional PCF reconstruction, the MKB, LDPC, and HDTV algorithm yield images of increased quality in terms of CNR. While the MKB reconstruction only provides small improvements, a significant increase of the CNR is observed in LDPC and HDTV reconstructions. The phantom studies demonstrate that left ventricular volumes can be determined accurately at 500 mGy. For lower dose levels which were simulated for real mouse data sets, the HDTV algorithm shows the best performance. At 50 mGy, the deviation from the reference obtained at 500 mGy were less than 4%. Also the LDPC algorithm provides reasonable results with deviation less than 10% at 50 mGy while PCF and MKB reconstruction show larger deviations even at higher dose levels. Conclusions: LDPC and HDTV increase CNR and allow for quantitative evaluations even at dose levels as low as 50 mGy. The left ventricular volumes exemplarily illustrate that cardiac parameters can be accurately estimated at lowest dose levels if sophisticated algorithms are used. This allows to reduce dose by a factor of 10 compared to today's gold standard and opens new options for longitudinal studies of the heart.

  6. Nighttime NO3y chemistry: In situ Observation of the Various Removal Pathways of NO3 and N2O5 around the UK

    E-Print Network [OSTI]

    Jackson, Sophie

    and synoptic wind suggest air mass originated from the European continent; High aerosol organics in this aged on the left shows a typical scenario when urban emitted NO2 was transported to > 3 km, forming N2O5 which and to falling ice were frequently observed (even though days with forecast precipitation were deliberately

  7. FRUSTRATED ANTIFERROMAGNETS EASY AXIS ANISOTROPY

    E-Print Network [OSTI]

    of Fundamental Research, Mumbai, India for the degree of Doctor of Philosophy in Physics By Arnab Sen Department of Theoretical Physics Tata Institute of Fundamental Research Mumbai - 400 005, India June 2009 #12 Kedar Damle, at the Tata Institute of Fundamental Research, Mumbai. (Arnab Sen) In my capacity

  8. Ultrafast Magnetization Dynamics of SrRuO3 Thin Films

    SciTech Connect (OSTI)

    Langner, Matthew C

    2009-05-19

    Itinerant ferromagnet SrRuO3 has drawn interest from physicists due to its unusual transport and magnetic properties as well as from engineers due to its low resistivity and good lattice-matching to other oxide materials. The exact electronic structure remains a mystery, as well as details of the interactions between magnetic and electron transport properties. This thesis describes the use of time-resolved magneto-optical Kerr spectroscopy to study the ferromagnetic resonance of SrRuO3 thin films, where the ferromagnetic resonance is initiated by a sudden change in the easy axis direction in response to a pump pulse. The rotation of the easy axis is induced by laser heating, taking advantage of a temperature-dependent easy axis direction in SrRuO3 thin films. By measuring the change in temperature of the magnetic system in response to the laser pulse, we find that the specific heat is dominated by magnons up to unusually high temperature, ~;;100 K, and thermal diffusion is limited by a boundary resistance between the film and the substrate that is not consistent with standard phonon reflection and scattering models. We observe a high FMR frequency, 250 GHz, and large Gilbert damping parameter, alpha ~;; 1, consistent with strong spin-orbit coupling. We observe a time-dependent change in the easy axis direction on a ps time-scale, and we find that parameters associated with the change in easy axis, as well as the damping parameter, have a non-monotonic temperature dependence similar to that observed in anomalous Hall measurements.

  9. art 3

    Office of Environmental Management (EM)

    Area included in CH Bay Storage Area 1,600 ft 3 (45.3 m 3 ) 5 loaded facility pallets Derived Waste Storage Area included in CH Bay Storage Area 66.3 ft 3 (1.88 m 3 ) 1 Standard...

  10. Healthcare Energy Efficiency Research and Development

    E-Print Network [OSTI]

    Lanzisera,, Judy Lai, Steven M.

    2012-01-01

    computers (left) and computer displays (right) taken fromcomputers (left) and computer displays (right) taken fromblue line, right axis) of a netbook computer. The boxed

  11. Sci—Thur AM: YIS - 01: Dosimetric Analysis of Respiratory Induced Cardiac Intrafraction Motion in Left-sided Breast Cancer Radiotherapy

    SciTech Connect (OSTI)

    El-Sherif, O; Xhaferllari, I; Patrick, J; Yu, E; Gaede, S

    2014-08-15

    Introduction: Long-term cardiac side effects in left-sided breast cancer patients (BREL) after post-operative radiotherapy has become one of the most debated issues in radiation oncology. Through breathing-adapted radiotherapy the volume of the heart exposed to radiation can be significantly reduced by delivering the radiation only at the end of inspiration phase of the respiratory cycle, this is referred to as inspiration gating (IG). The purpose of this study is to quantify the potential reduction in cardiac exposure during IG compared to conventional BREL radiotherapy and to assess the dosimetric impact of cardiac motion due to natural breathing. Methods: 24 BREL patients treated with tangential parallel opposed photon beams were included in this study. All patients received a standard fast helical planning CT (FH-CT) and a 4D-CT. Treatment plans were created on the FH-CT using a clinical treatment planning system. The original treatment plan was then superimposed onto the end of inspiration CT and all 10 phases of the 4D-CT to quantify the dosimetric impact of respiratory motion and IG through 4D dose accumulation. Results: Through IG the mean dose to the heart, left ventricle, and left anterior descending artery (LAD) can be reduced in comparison to the clinical standard BREL treatment by as much as 8.39%, 10.11%, and 13.71% respectively (p < 0.05). Conclusion: Failure to account for respiratory motion can lead to under or overestimation in the calculated DVH for the heart, and it's sub-structures. IG can reduce cardiac exposure especially to the LAD during BREL radiotherapy.

  12. SU-E-T-317: The Development of a DIBH Technique for Left Sided Breast Patients Undergoing Radiation Therapy Utilizing Varians RPM System in a Community Hospital

    SciTech Connect (OSTI)

    Hasson, B; Young, M; Workie, D; Geraghty, C

    2014-06-01

    Purpose: To develop and implement a Deep Inhalation Breath Hold program (DIBH) for treatment of patients with Left-sided breast cancer in a community hospital. Methods: All patients with left sided breast cancer underwent a screening free breathing CT. Evaluation of the conventional tangent treatment fields and the heart was conducted. If the heart would not be excluded using tangents, the patient then received DIBH breathe coaching. The patients returned for a 4D CT simulation. The patients breathing cycle was monitored using the Varian Real-Time position ManagementTM (RPM) system to assess duration of DIBH, amplitude, phase and recovery time to normal breathing. Then a DIBH CT was obtained at the desired amplitude. Duplicate plans were developed for both free breathing and DIBH on the Eclipse planning system and comparison DVH's were created. The plan that provided the prescribed treatment coverage and the least doses to the OAR (heart, Lt. Lung) was determined. Those patients selected to receive treatment with DIBH were set up for treatment, and breathing was monitored using the RPM system. Practice trials were used to confirm that the amplitude, phase and recovery were consistent with findings from simulation. Results: 10 patients have been treated using the DIBH procedure in our clinic. The DIBH patients had an average increase of 80% lung volume on DIBH, decreased lung volume receiving 50% of the dose, and decreases in the V20 dose. Significant reduction in the maximum and mean dose to the heart, as well as the dose to 1CC of the volume for the DIBH plans. Conclusion: Using the RPM system already available in the clinic, staff training, and patient coaching a simple DIBH program was setup. The use of DIBH has shown promise in reducing doses to the critical organs while maintaining PTV coverage for left sided breast treatments.

  13. Aneurysm of an Anomalous Systemic Artery Supplying the Normal Basal Segments of the Left Lower Lobe: Endovascular Treatment with the Amplatzer Vascular Plug II and Coils

    SciTech Connect (OSTI)

    Canyigit, Murat, E-mail: mcanyigit@yahoo.com; Gumus, Mehmet; Kilic, Evrim; Erol, Bekir; Cetin, Huseyin [Ankara Ataturk Education and Research Hospital, Department of Radiology (Turkey); Hasanoglu, Hatice Canan [Ankara Ataturk Education and Research Hospital, Department of Pulmonary Disease (Turkey); Arslan, Halil [Ankara Ataturk Education and Research Hospital, Department of Radiology (Turkey)

    2011-02-15

    An anomalous systemic artery originating from the descending thoracic aorta supplying the normal basal segments of the lower lobe of the left lung without sequestration is a rare congenital anomaly. The published surgical treatments include lobectomy, segmentectomy, anastomosis, and ligation. In addition, endovascular treatment with coils has been reported. A second-generation occluder, the Amplatzer Vascular Plug II (AVP II), has a central plug and two occlusion disks and a finer, more densely woven nitinol wire, thus enabling faster embolization. This published case is the first successful occlusion of an aneurysm of an anomalous systemic artery with the AVP II and fibered coils, with 10 months of follow-up.

  14. Implications of the Diboson Excess for Neutrinoless Double Beta Decay and Lepton Flavor Violation in TeV Scale Left Right Symmetric Model

    E-Print Network [OSTI]

    Awasthi, Ram Lal; Mitra, Manimala

    2015-01-01

    Inspired by the recent diboson excess observed at the LHC and possible interpretation within a TeV-scale Left-Right symmetric framework, we explore its implications for low-energy experiments searching for lepton number and flavor violation. Assuming a simple Type-II seesaw mechanism for neutrino masses, we show that for the right-handed (RH) gauge boson mass and coupling values required to explain the LHC anomalies, the RH contribution to the lepton number violating process of neutrinoless double beta decay ($0\

  15. CMR at 3 Tesla using a large flexible surface coil: initial experience KS Nayak, P Varadarajan, C-Y Liu, S Valencerina, GM Pohost

    E-Print Network [OSTI]

    Southern California, University of

    CMR at 3 Tesla using a large flexible surface coil: initial experience KS Nayak, P Varadarajan, C obtained with a flexible receiver coil that generates LV function studies at 3T of diagnostic quality that wraps around the left chest for CMR imaging of the heart at 3 Tesla. Methods: Experiments were performed

  16. A Van Gogh inspired 3D Shader Methodology 

    E-Print Network [OSTI]

    Sharma, Suruchi

    2013-08-01

    Figure 1. The Night Caf? by Van Gogh, 1888 [13] ......................................................... 6 Figure 2. Detail of Wheat Feld with Cypresses by Van Gogh, 1889 [14] ........................ 7 Figure 3. (Left) Woodblock print. The Plum Garden.... Detail of Wheat Feld with Cypresses by Van Gogh, 1889 [14] Lev Manovich developed ?Cultural Analytics? research study group in 2007 at Software Studies Initiative, UCSD. His research focuses on exploring and visually examining large cultural data...

  17. AN in inclusive lepton-proton collisions: TMD and twist-3 approaches

    SciTech Connect (OSTI)

    Prokudin, Alexey [JLAB

    2015-01-01

    We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute this asymmetry in both TMD and in twist-3 collinear factorization formalisms. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. We discuss similarities and differences of two formalisms.

  18. $A_N$ in inclusive lepton-proton collisions: TMD and twist-3 approaches

    E-Print Network [OSTI]

    Alexei Prokudin

    2014-10-14

    We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute this asymmetry in both TMD and in twist-3 collinear factorization formalisms. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. We discuss similarities and differences of two formalisms.

  19. AN in inclusive lepton-proton collisions: TMD and twist-3 approaches

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

    Prokudin, Alexei

    2015-01-23

    We consider the inclusive production of hadrons in lepton-nucleon scattering. For a transversely polarized nucleon this reaction shows a left-right azimuthal asymmetry, which we compute this asymmetry in both TMD and in twist-3 collinear factorization formalisms. All non-perturbative parton correlators of the calculation are fixed through information from other hard processes. Our results for the left-right asymmetry agree in sign with recent data for charged pion production from the HERMES Collaboration and from Jefferson Lab. As a result, we discuss similarities and differences of two formalisms.

  20. A 3D Statistical Shape Model Of The Pelvic Bone For Segmentation

    E-Print Network [OSTI]

    Andrzejak, Artur

    patient models from 3D image data. Within the setting of a hybrid system (applicator plus MR tomograph. Left: hybrid system (MRT plus applicator), Right: MRT slice image from the abdomen with pelvic bone. 1 on heating up affected tissue compartments to temperatures above 42 degree Celsius without damaging

  1. SU-D-18A-06: Variation of Controlled Breath Hold From CT Simulation to Treatment and Its Dosimetric Impact for Left-Sided Breast Radiotherapy with a Real-Time Optical Tracking System

    SciTech Connect (OSTI)

    Mittauer, K; Deraniyagala, R; Li, J; Lu, B; Liu, C; Lightsey, J; Yan, G

    2014-06-01

    Purpose: Different breath-hold (BH) maneuvers (abdominal breathing vs. chest breathing) during CT simulation and treatment can lead to chest wall positional variation. The purpose of this study is to quantify the variation of active breathing control (ABC)-assisted BH and estimate its dosimetric impact for left-sided whole-breast radiotherapy with a real-time optical tracking system (OTS). Methods: Seven breast cancer patients were included. An in-house OTS tracked an infrared (IR) marker affixed over the xiphoid process of the patient at CT simulation and throughout the treatment course to measure BH variations. Correlation between the IR marker and the breast was studied for dosimetric purposes. The positional variations of 860 BHs were retrospectively incorporated into treatment plans to assess their dosimetric impact on breast and cardiac organs (heart and left anterior descending artery [LAD]). Results: The mean intrafraction variations were 2.8 mm, 2.7 mm, and 1.6 mm in the anteroposterior (AP), craniocaudal (CC), and mediolateral (ML) directions, respectively. Mean stability in any direction was within 1.5 mm. A general trend of BH undershoot at treatment relative to CT simulation was observed with an average of 4.4 mm, 3.6 mm, and 0.1 mm in the AP, CC, and ML directions, respectively. Undershoot up to 12.6 mm was observed for individual patients. The difference between the planned and delivered dose to breast targets was negligible. The average planned/delivered mean heart doses, mean LAD doses, and max LAD doses were 1.4/2.1, 7.4/15.7, and 18.6/31.0 Gy, respectively. Conclusion: Systematic undershoot was observed in ABC-assisted BHs from CT simulation to treatment. Its dosimetric impact on breast coverage was minimized with image guidance, but the benefits of cardiac organ sparing were degraded. A real-time tracking system can be used in junction with the ABC device to improve BH reproducibility.

  2. A Jones matrix formalism for simulating 3D Polarised Light Imaging of brain tissue

    E-Print Network [OSTI]

    Menzel, Miriam; De Raedt, Hans; Reckfort, Julia; Amunts, Katrin; Axer, Markus

    2015-01-01

    The neuroimaging technique 3D Polarised Light Imaging (3D-PLI) provides a high-resolution reconstruction of nerve fibres in human post-mortem brains. The orientations of the fibres are derived from birefringence measurements of histological brain sections assuming that the nerve fibres - consisting of an axon and a surrounding myelin sheath - are uniaxial birefringent and that the measured optic axis is oriented in direction of the nerve fibres (macroscopic model). Although experimental studies support this assumption, the molecular structure of the myelin sheath suggests that the birefringence of a nerve fibre can be described more precisely by multiple optic axes oriented radially around the fibre axis (microscopic model). In this paper, we compare the use of the macroscopic and the microscopic model for simulating 3D-PLI by means of the Jones matrix formalism. The simulations show that the macroscopic model ensures a reliable estimation of the fibre orientations as long as the polarimeter does not resolve ...

  3. Azimuthally Anisotropic 3D Velocity Continuation

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

    Burnett, William; Fomel, Sergey

    2011-01-01

    We extend time-domain velocity continuation to the zero-offset 3D azimuthally anisotropic case. Velocity continuation describes how a seismic image changes given a change in migration velocity. This description turns out to be of a wave propagation process, in which images change along a velocity axis. In the anisotropic case, the velocity model is multiparameter. Therefore, anisotropic image propagation is multidimensional. We use a three-parameter slowness model, which is related to azimuthal variations in velocity, as well as their principal directions. This information is useful for fracture and reservoir characterization from seismic data. We provide synthetic diffraction imaging examples to illustratemore »the concept and potential applications of azimuthal velocity continuation and to analyze the impulse response of the 3D velocity continuation operator.« less

  4. JOURNAL DE PHYSIQUE Colloque C6, supplPment au no 8, Tome 39, aotit 1978, page C6-135 DEBYE BEHAVIOR OF THE THERMAL CONDUCTIVITY OF bcc 3 ~ eA T VERY LOW TEMPERATURES

    E-Print Network [OSTI]

    Boyer, Edmond

    in a cy- lindrical sample chamber, 2.3 cm in diameter, cast from stycast 1266 /I/ with three 400 R Speer diameter bore along the axis of the epoxy cylinder nicked the Speer resistors and formed the sample space to the bottom of the chamber. The Speer resistors were ca- librated using a melting curve sample of 3 ~ eand

  5. SU-E-T-483: Treatment Planning Study of Volumetric Modulated Arc Therapy for Left-Sided Breast and Chestwall Cancers

    SciTech Connect (OSTI)

    Xu, H

    2014-06-01

    Purpose: To perform the comparison of dose distributions and dosevolume- histograms generated by VMAT and conventional field-in-field technique for left-sided breast and chestwall cancers; to determine whether VMAT offers more dosimetric benefits than does the field-in-field technique. Methods: All VMAT and field-in-filed plans were produced in Eclipse(version 10). Five plans were generated for left-sided breast and leftsided chestwall with supraclavicular nodes, respectively. A clockwise arc (CW) and a counter-clockwise arc (CCW) were used with start and stop angles being 310o±10o and 140o±10o. Collimator angles were 30o for CW and 330o for CCW. The conformity index (CI) is the ratio of V95% over PTV. The homogeneity index (HI) is the ratio of the difference between D2% and D98% over the prescribed dose. The V5, as an indicator of low dose bath to organs-at-risk, was used for ipsilateral lung, heart, contralateral lung, and contralateral breast. The V20, as an indicator of radiation pneumonitis, was used for ipsilateral lung. Results: Breast/chestwall VMAT delivers much higher low dose bath to ipsilateral lung, contralateral lung and contralateral breast/chestwall for both intact breast and chestwall with nodes. V5 for heart is increased in VMAT plans. V20 for ipsilateral lung is lower in VMAT plans. PTV coverage is similar for both techniques. For one particular chestwall patient with supraclavicular and internal mammary nodes, VMAT offers superior dose coverage of PTVs with slightly more low-dose-wash to heart, contralateral lung and contralateral breast. Conclusion: This study indicates that there is generally no benefit using VMAT for left-sided intact breast, due to large low-dose-bath (5Gy) to normal tissues with insignificant improvement in PTV coverage. Dosimetric benefits will be seen in VMAT plans for some chestwall patients with large size, and/or internal mammary nodes, etc. Whether a chestwall patient is treated with VMAT should be carefully analyzed on an individual basis.

  6. $^{3}_?\\mathrm H$ and $^{3}_{\\bar?} \\overline{\\mathrm H}$ production in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV

    E-Print Network [OSTI]

    ALICE Collaboration

    2015-06-28

    The production of the hypertriton nuclei $^{3}_{\\Lambda}\\mathrm H$ and $^{3}_{\\bar{\\Lambda}} \\overline{\\mathrm H}$ has been measured for the first time in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV with the ALICE experiment at LHC energies. The total yield, d$N$/d$y$ $\\times \\mathrm{B.R.}_{\\left( ^{3}_{\\Lambda}\\mathrm H \\rightarrow ^{3}\\mathrm{He},\\pi^{-} \\right)} = \\left( 3.86 \\pm 0.77 (\\mathrm{stat.}) \\pm 0.68 (\\mathrm{syst.})\\right) \\times 10^{-5}$ in the 0-10% most central collisions, is consistent with the predictions from a statistical thermal model using the same temperature as for the light hadrons. The coalescence parameter $B_3$ shows a dependence on the transverse momentum, similar to the $B_2$ of deuterons and the $B_3$ of $^{3}\\mathrm{He}$ nuclei. The ratio of yields $S_3$ = $^{3}_{\\Lambda}\\mathrm H$/($^{3}\\mathrm{He}$ $\\times \\Lambda/\\mathrm{p}$) was measured to be $S_3$ = 0.60 $\\pm$ 0.13 (stat.) $\\pm$ 0.21 (syst.) in 0-10% centrality events; this value is compared to different theoretical models. The measured $S_3$ is fully compatible with thermal model predictions. The measured $^{3}_{\\Lambda}\\mathrm H$ lifetime, $ \\tau = 181^{+54}_{-39} (\\mathrm{stat.}) \\pm 33 (\\mathrm{syst.})\\ \\mathrm{ps}$ is compatible within 1$\\sigma$ with the world average value.

  7. Deriving Veneziano Model in a Novel String Field Theory Solving String Theory by Liberating Right and Left Movers

    E-Print Network [OSTI]

    Holger B. Nielsen; Masao Ninomiya

    2015-03-10

    Bosonic string theory with the possibility for an arbitrary number of strings - i.e. a string ?eld theory - is formulated by a Hilbert space (a Fock space), which is just that for massless noninteracting scalars. We earlier presented this novel type of string ?eld theory, but now we show that it leads to scattering just given by the Veneziano model amplitude. Generalization to strings with fermion modes would presumably be rather easy. It is characteristic for our formulation /model that: 1) We have thrown away some null set of information compared to usual string ?eld theory, 2)Formulated in terms of our \\objects" (= the non-interacting scalars) there is no interaction and essentially no time development(Heisenberg picture), 3) so that the S-matrix is in our Hilbert space given as the unit matrix, S=1, and 4) the Veneziano scattering amplitude appear as the overlap between the initial and the ?nal state described in terms of the \\objects". 5) The integration in the Euler beta function making up the Veneziano model appear from the summation over the number of \\objects" from one of the incoming strings which goes into a certain one of the two outgoing strings. A correction from Weyl anomaly is needed to get the correct form of the Veneziano amplitude and it only fits for 26 dimensions.

  8. The rare crystallographic structure of d(CGCGCG){sub 2}: The natural spermidine molecule bound to the minor groove of left-handed Z-DNA d(CGCGCG){sub 2} at 10 {sup o}C

    SciTech Connect (OSTI)

    Ohishi, Hirofumi . E-mail: ohishi@gly.oups.ac.jp; Tozuka, Yoshitaka; Da-Yang, Zhou; Ishida, Toshimasa; Nakatani, Kazuhiko

    2007-06-22

    Several crystal structure analyses of complexes of synthetic polyamine compounds, including N {sup 1}-(2-(2-aminoethylamino))ethyl)ethane-1,2-diamine PA(222) and N {sup 1}-(2-(2-(2-aminoethylamino)ethylamino)ethyl)ethane-1,2-diamine PA(2222), and left-handed Z-DNA d(CGCGCG){sub 2} have been reported. However, until now, there have been no examples of naturally occurring polyamines bound to the minor groove of the left-handed Z-DNA of d(CGCGCG){sub 2} molecule. We have found that spermidine, a natural polyamine, is connected to the minor groove of left-handed Z-DNA of d(CGCGCG){sub 2} molecule in a crystalline complex grown at 10 {sup o}C. The electron density of the DNA molecule was clear enough to determine that the spermidine was connected in the minor groove of two symmetry related molecules of left-handed Z-DNA d(CGCGCG){sub 2}. This is the first example that a spermidine molecule can form a bridge conformation between two symmetry related molecules of left-handed Z-DNA d(CGCGCG){sub 2} in the minor groove.

  9. BEPRO3

    Energy Science and Technology Software Center (OSTI)

    002279MLTPL00 Bayesian Estimator of Protein-Protein Association Probabilities  http://www.pnl.gov/statistics/BEPro3 

  10. 3/10/2015 NIDIS Drought and Water Assessment http://climate.colostate.edu/~drought/current_assessment.php 1/15

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    /White have below normal moisture #12;3/10/2015 NIDIS Drought and Water Assessment http3/10/2015 NIDIS Drought and Water Assessment httpCoRaHS, and CoAgMet stations. From top to bottom, and left to right: most recent 7days of accumulated

  11. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.3 Beamline 7.3.3 Print3.3 Print

  12. Supplementary Material:1 Mixing state of individual submicron carbon-containing particles3

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    Supplementary Material:1 2 Mixing state of individual submicron carbon-containing particles3 during period.58 #12;59 60 Fig. S3. Fire maps from MODIS on board the Terra and Aqua satellites during61 2010/05/01-2010/05/10 (left), and 2010/11/07-2010/11/16 (right). The fire map62 accumulates the locations of the fires over

  13. 24.01.01.M0.06 Visitors in Hazardous Areas Page 1 of 3 STANDARD ADMINISTRATIVE PROCEDURE

    E-Print Network [OSTI]

    24.01.01.M0.06 Visitors in Hazardous Areas Page 1 of 3 STANDARD ADMINISTRATIVE PROCEDURE 24.01.01.Q0.06 Visitors in Hazardous Areas Approved September 5, 2012 Next scheduled review: September 5, 2015" or "hazardous area". Instead these are left to the judgment of reasonable and prudent persons with consideration

  14. 24.01.01.M0.02 Visitors in Hazardous Areas Page 1 of 3 STANDARD ADMINSTRATIVE PROCEDURE

    E-Print Network [OSTI]

    24.01.01.M0.02 Visitors in Hazardous Areas Page 1 of 3 STANDARD ADMINSTRATIVE PROCEDURE 24.01.01.M0.02 Visitors in Hazardous Areas Approved May 2, 1997 Revised August 10, 2009 Revised February 28, 2013 Next not define "hazard" or "hazardous area". Instead, these are left to the judgement of reasonable and prudent

  15. LLaannggeerrhhaannss LLaabb PPrroottooccoollss FTP Data Backup.docx revised 3/19/12 by JW page 1 of 1

    E-Print Network [OSTI]

    Langerhans, Brian

    , the FTP server's folder structure will be shown on the right, while the user's computer will be shown appear, pre-set 3. click Connect a. the left side window is the computer you're working on, and the right computer) to right side (server), into a folder with your name (you might need to create this the first

  16. ITALY DAILY, WEDNESDAY, JULY 25, 2001 PAGE 3 temp min c/f max c/f

    E-Print Network [OSTI]

    Frischer, Bernard

    Hunting for Horace's Humble Home Did the Poet Live as Modestly as He Said He Did? An Archaeological TeamDISCOVER ITALY DAILY, WEDNESDAY, JULY 25, 2001 PAGE 3 Weather temp min c/f max c/f SUNNY PARTLY in his writing than many of his contemporaries, he left clues as to where he made his home. He wrote

  17. Tal Shaya Issue 3 

    E-Print Network [OSTI]

    Multiple Contributors

    1976-01-01

    ?Edith Keeler?whose offer to help, and his need to hear it said, have never left him. L I L t L I I w&Pm? r r r H^ IP It would not be quite accurate to say that Chantal was holding court?the Enterprise being most definitely not a monarchy...

  18. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.3 Print7.3.3

  19. Converse magnetoelectric coupling in NiFe/Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}–PbTiO{sub 3} nanocomposite thin films grown on Si substrates

    SciTech Connect (OSTI)

    Feng, Ming; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000 ; Hu, Jiamian; Wang, Jianjun; Li, Zheng; Shu, Li; Nan, C. W.

    2013-11-04

    Multiferroic NiFe (?30 nm)/Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}–PbTiO{sub 3}(PMN–PT, ?220 nm) bilayered thin films were grown on common Pt/Ti/SiO{sub 2}/Si substrates by a combination of off-axis magnetron sputtering and sol-gel spin-coating technique. By using AC-mode magneto-optical Kerr effect technique, the change in the Kerr signal (magnetization) of the NiFe upon applying a low-frequency AC voltage to the PMN–PT film was in situ acquired at zero magnetic field. The obtained Kerr signal versus voltage loop essentially tracks the electromechanical strain curve of the PMN–PT thin film, clearly demonstrating a strain-mediated converse magnetoelectric coupling, i.e., voltage-modulated magnetization, in the NiFe/PMN–PT nanocomposite thin films.

  20. Lecture 3

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

    next few sections, reaction (3.62) is the second most important reaction in hydrocarbon combustion, since hydrogen is always abundantly available in hydrocarbon fuels. Stanford...

  1. Left Coast Electric Formerly Left Coast Conversions | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma, Arizona: EnergyLebanon County,Leflore County, Mississippi:

  2. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.3 Beamline 7.3.3 Print Tuesday,

  3. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print3.3 Beamline 7.3.3 Print

  4. THIS PAGE INTENTIONALLY LEFT BLANK

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OF APPLICABLEStatutory Authority SustainXSystemTraining (MERRTT)THE USEWORLD'S

  5. Please cite this article in press as: Ramsey, R., & Hamilton, A.F.d.C. Triangles have goals too: Understanding action representation in left aIPS. Neuropsychologia (2010), doi:10.1016/j.neuropsychologia.2010.04.028

    E-Print Network [OSTI]

    Hamilton, Antonia

    2010-01-01

    Please cite this article in press as: Ramsey, R., & Hamilton, A.F.d.C. Triangles have goals too communication Triangles have goals too: Understanding action representation in left aIPS Richard Ramsey of animacy Corresponding author. E-mail address: richard.ramsey@nottingham.ac.uk (R. Ramsey). and brain

  6. Cavitation on a modern ship propeller.This photograph was taken by Mark Duttweiler (PhD '01) in Caltech's Mechanical Engineering, Low Turbulence Water Tunnel. The flow is from right to left. Enter the second issue of ENGenious.

    E-Print Network [OSTI]

    Haile, Sossina M.

    ) in Caltech's Mechanical Engineering, Low Turbulence Water Tunnel. The flow is from right to left. #12;4 5 of Engineering and Applied Science itself is ever evolving--a collection of exceptional people doing exceptional of Engineering and Applied Science. Finally, before you read on, I would like to take this opportunity to thank

  7. SPORTAL3

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

    to sportal3?' located at the end of this document. 2 Link to the Halogen site with Internet Explorer: o https:halogen2.ameslab.govHalogenwelcome.jsp o For additional...

  8. Evropsk sociln fond Praha a EU: Investujeme do vas budoucnosti

    E-Print Network [OSTI]

    the forward-backward and the left-right motors and by raising the head. The motors are kept shut-down until. Determine the length of the vertical axis. Exercise 2 ­ Ensuring Safety Add an emergency feature to your the application is restarted. Integrate this emergency feature to each of the subsequent exercises. Exercise 3

  9. Subduction tractions and vertical axis rotations in the Zagros–Makran transition zone, SE Iran: the 2013 May 11 Mw 6.1 Minab earthquake

    E-Print Network [OSTI]

    Penney, Camilla; Copley, Alex; Oveisi, Behnam

    2015-06-09

    , E., Elliott, J., Jackson, J. & Parsons, B., 2010. The vertical separation of mainshock rupture and microseismicity at Qeshm island in the Zagros fold-and-thrust belt, Iran, Earth planet. Sci. Lett., 296(3–4), 181–194. Nissen, E., Tatar, M., Jackson...

  10. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.3 Print Small-

  11. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.3 Print

  12. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.3 PrintBeamline

  13. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.3

  14. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.3 Print

  15. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.3

  16. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.33.3 Print

  17. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.33.3

  18. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.33.33.3 Print

  19. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.33.33.3

  20. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.33.33.33.3

  1. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.11 Print Ultrafast7.3.17.3.33.33.33.33.33.3

  2. The Agonizer Volume 3, No. 3 

    E-Print Network [OSTI]

    1991-01-01

    much a part of our nature. Perhaps we enjoy the feeling of being both repelled and fascinated by a thing; the conflicting emotions. Not everything that is dangerous is ugly-does not the diamond-backed rattlesnake wear a coat of fascinating design? I... party at the Bijou Grille, where we left no doubt that the Great Peace can, indeed, work. One would never have thought that Klingon and Federation personnel could sit at the same table discussing everything from ship designs to uniform decorations...

  3. Ghrelin inhibits the apoptosis of MC3T3-E1 cells through ERK and AKT signaling pathway

    SciTech Connect (OSTI)

    Liang, Qiu-Hua; Liu, Yuan; Wu, Shan-Shan; Cui, Rong-Rong; Yuan, Ling-Qing, E-mail: allenylq@hotmail.com; Liao, Er-Yuan, E-mail: eyliao@21cn.com

    2013-11-01

    Ghrelin is a 28-amino-acid peptide that acts as a natural endogenous ligand of the growth hormone secretagogue receptor (GHSR) and strongly stimulates the release of growth hormone from the hypothalamus–pituitary axis. Previous studies have identified the important physiological effects of ghrelin on bone metabolism, such as regulating proliferation and differentiation of osteoblasts, independent of GH/IGF-1 axis. However, research on effects and mechanisms of ghrelin on osteoblast apoptosis is still rare. In this study, we identified expression of GHSR in MC3T3-E1 cells and determined the effects of ghrelin on the apoptosis of osteoblastic MC3T3-E1 cells and the mechanism involved. Our data demonstrated that ghrelin inhibited the apoptosis of osteoblastic MC3T3-E1 cells induced by serum deprivation, as determined by terminal deoxynucleotidyl transferase-mediated deoxyribonucleotide triphosphate nick end-labeling (TUNEL) and ELISA assays. Moreover, ghrelin upregulated Bcl-2 expression and downregulated Bax expression in a dose-dependent manner. Our study also showed decreased activated caspase-3 activity under the treatment of ghrelin. Further study suggested that ghrelin stimulated the phosphorylation of ERK and AKT. Pretreatment of cells with the ERK inhibitor PD98059, PI3K inhibitor LY294002, and GHSR-siRNA blocked the ghrelin-induced activation of ERK and AKT, respectively; however, ghrelin did not stimulate the phosphorylation of p38 or JNK. PD90859, LY294002 and GHSR-siRNA attenuated the anti-apoptosis effect of ghrelin in MC3T3-E1 cells. In conclusion, ghrelin inhibits the apoptosis of osteoblastic MC3T3-E1 cells induced by serum deprivation, which may be mediated by activating the GHSR/ERK and GHSR/PI3K/AKT signaling pathways. - Highlights: • We explored the effects of ghrelin on serum deprivation-induced MC3T3-E1 cells apoptosis. • Both ELISA and TUNEL were used to detect the apoptosis. • The receptor of ghrelin, GHSR, was expressed in MC3T3-E1 cells. • Both Akt and ERK are critical adaptor molecules to mediate the effects of ghrelin.

  4. C-3EŽ WOMENS INITIATIVE:

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematics AndBeryllium Diseasem-2m-3l-04-05-2012.xlsxFront Cover From left to right: ACost4-03!1 = 20, 2010

  5. Hysteretic electrical transport in BaTiO{sub 3}/Ba{sub 1?x}Sr{sub x}TiO{sub 3}/Ge heterostructures

    SciTech Connect (OSTI)

    Ngai, J. H.; Kumah, D. P.; Walker, F. J.; Ahn, C. H.

    2014-02-10

    We present electrical transport measurements of heterostructures comprised of BaTiO{sub 3} and Ba{sub 1?x}Sr{sub x}TiO{sub 3} epitaxially grown on Ge. Sr alloying imparts compressive strain to the BaTiO{sub 3}, which enables the thermal expansion mismatch between BaTiO{sub 3} and Ge to be overcome to achieve c-axis oriented growth. The conduction bands of BaTiO{sub 3} and Ba{sub 1?x}Sr{sub x}TiO{sub 3} are nearly aligned with the conduction band of Ge, which facilitates electron transport. Electrical transport measurements through the dielectric stack exhibit rectifying behavior and hysteresis, where the latter is consistent with ferroelectric switching.

  6. Critical currents in vicinal YBa2Cu3O7-delta films

    E-Print Network [OSTI]

    Durrell, John H

    2004-01-01

    of these materials. For the case of YBCO the Ginzburg-Landau anisotropy param- eter, ?, is 5-7, whereas in Bi2Sr2CaCu2O8+x (BSCCO 2212) the value is? 200. This large difference has been attributed to the cuprate chains found along the b-axis between the cuprate... -oxygenated YBCO films31. III. EXPERIMENTAL TECHNIQUE Thin films of YBa2Cu3O7?? were prepared by pulsed laser deposition. The films all had thicknesses of between 100 and 200 nm and were grown on single crystal SrTiO3 substrates mis-cut by an angle, ?v , towards...

  7. Beamline 3.3.2

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.1 Print National Center3.3.2 Print General

  8. Beamline 3.3.2

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.1 Print National Center3.3.2 Print

  9. Beamline 7.3.3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & Inspections AuditsBarbara2.0.1 Print0.2 Print Surface3.3 Print

  10. On the peculiar properties of triangular-chain EuCr{sub 3}(BO{sub 3}){sub 4} antiferromagnet

    SciTech Connect (OSTI)

    Gondek, ?.; Szytu?a, A.; Przewo?nik, J.; ?ukrowski, J.; Prokhorov, A.; Chernush, L.; Zubov, E.; Dyakonov, V.; Tyvanchuk, Yu.

    2014-02-15

    In this paper we report studies on EuCr{sub 3}(BO{sub 3}){sub 4} compound, that is a member of newly discovered family of huntite-related specimens for non-linear optics. For the first time, the uncommon temperature dependence of the EuCr{sub 3}(BO{sub 3}){sub 4} lattice parameters is reported. Additionally, the magnetism of this compound is extremely interesting. Namely, a possible interplay in between potentially magnetic rare-earth ions and 3d metal stacked within quasi-1D chain that can lead to a great variety of magnetic behaviour. Indeed, in our studies we have found 3D-long range ordering with metamagnetic behaviour, while at higher temperature the magnetic chains become uncoupled. - Graphical abstract: Torsion-like vibrations are the key to understand negative thermal expansion along the a-axis. Display Omitted - Highlights: • EuCr{sub 3}(BO{sub 3}){sub 4} is a peculiar triangular-chain antiferromagnet. • Rare earth sublattice is non-magnetic with Eu{sup 3+} configuration. • Cr{sup 3+} magnetic moments show 1-D behaviour along with spin fluctuations. • Torsion vibrations of Cr triangular tubes lead to anomalous expansion of unit cell.

  11. JPf3

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700, 1.Reports1E~ S·D3GraniteS T *-31317-1

  12. ch_3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos AlamosSimulation Initiative ccsi.jpg The0 11.0 Response100 3.0

  13. ch_3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos AlamosSimulation Initiative ccsi.jpg The0 11.0 Response100 3.013

  14. ch_3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos AlamosSimulation Initiative ccsi.jpg The0 11.0 Response100 3.0135

  15. January 3

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    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenryInhibitingInteractivePGASelectronJames17January 26, 2016 January 3

  16. Lecture 3

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E C H N I C AFAQ » Lecture &2-1 3-1

  17. Li{sub 2}B{sub 3}O{sub 4}F{sub 3}, a new lithium-rich fluorooxoborate

    SciTech Connect (OSTI)

    Pilz, Thomas; Nuss, Hanne; Jansen, Martin

    2012-02-15

    The new lithium fluorooxoborate, Li{sub 2}B{sub 3}O{sub 4}F{sub 3}, is obtained by a solid state reaction from LiBO{sub 2} and LiBF{sub 4} at 553 K and crystallizes in the acentric orthorhombic space group P2{sub 1}2{sub 1}2{sub 1} (no. 19) with the cell parameters a=4.8915(9), b=8.734(2), and c=12.301(2) A. Chains of fluorinated boroxine rings along the b axis consists of BO{sub 3} triangles and BO{sub 2}F{sub 2} as well as BO{sub 3}F tetrahedra. Mobile lithium ions are compensating the negative charge of the anionic chain, in which the fourfold coordinated boron atoms bear a negative formal charge. Annealing Li{sub 2}B{sub 3}O{sub 4}F{sub 3} at temperatures above 573 K leads to conversion into Li{sub 2}B{sub 6}O{sub 9}F{sub 2}. The title compound is an ionic conductor with the highest ion conductivity among the hitherto know lithium fluorooxoborates, with conductivities of 1.6 Multiplication-Sign 10{sup -9} and 1.8 Multiplication-Sign 10{sup -8} S cm{sup -1} at 473 and 523 K, respectively. - Graphical abstract: Repetition unit of Li{sub 2}B{sub 3}O{sub 4}F{sub 3}. Highlights: Black-Right-Pointing-Pointer Li{sub 2}B{sub 3}O{sub 4}F{sub 3} is the third member within the family of lithium fluorooxoborates. Black-Right-Pointing-Pointer It shows the highest lithium ion conductivity among them. Black-Right-Pointing-Pointer Chains of interconnected fluorinated boroxine rings run along the b axis. Black-Right-Pointing-Pointer Acentric space group meets the requirement for second harmonic generation.

  18. The 42 Assessors and the Box-Kites they fly: Diagonal Axis-Pair Systems of Zero-Divisors in the Sedenions' 16 Dimensions

    E-Print Network [OSTI]

    Robert P. C. de Marrais

    2000-11-30

    G. Moreno's abstract depiction of the Sedenions' normed zero-divisors, as homomorphic to the exceptional Lie group G2, is fleshed out by exploring further structures the A-D-E approach of Lie algebraic taxonomy keeps hidden. A breakdown of table equivalence among the half a trillion multiplication schemes the Sedenions allow is found; the 168 elements of PSL(2,7), defining the finite projective triangle on which the Octonions' 480 equivalent multiplication tables are frequently deployed, are shown to give the exact count of primitive unit zero-divisors in the Sedenions. (Composite zero-divisors, comprising all points of certain hyperplanes of up to 4 dimensions, are also determined.) The 168 are arranged in point-set quartets along the 42 Assessors (pairs of diagonals in planes spanned by pure imaginaries, each of which zero-divides only one such diagonal of any partner Assessor). These quartets are multiplicatively organized in systems of mutually zero-dividing trios of Assessors, a D4-suggestive 28 in number, obeying the 6-cycle crossover logic of trefoils or triple zigzags. 3 trefoils and 1 zigzag determine an octahedral vertex structure we call a box-kite -- seven of which serve to partition Sedenion space. By sequential execution of proof-driven production rules, a complete interconnected box-kite system, or Seinfeld production (German for field of being; American for 1990's television's Show About Nothing), can be unfolded from an arbitrary Octonion and any (save for two) of the Sedenions. Indications for extending the results to higher dimensions and different dynamic contexts are given in the final pages.

  19. Beamline 3.3.2

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O OLaura| National2.1 Print National Center 29-ID2.12.13.3.2

  20. Beamline 3.3.2

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & Inspections AuditsBarbara2.0.1 Print EUV optics13.3.2 Print

  1. $^{3}_{\\Lambda}\\mathrm H$ and $^{3}_{\\bar{\\Lambda}} \\overline{\\mathrm H}$ production in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV

    E-Print Network [OSTI]

    Adam, Jaroslav; Aggarwal, Madan Mohan; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer; Ahn, Sang Un; Aimo, Ilaria; Aiola, Salvatore; Ajaz, Muhammad; Akindinov, Alexander; Alam, Sk Noor; Aleksandrov, Dmitry; Alessandro, Bruno; Alexandre, Didier; Alfaro Molina, Jose Ruben; Alici, Andrea; Alkin, Anton; Alme, Johan; Alt, Torsten; Altinpinar, Sedat; Altsybeev, Igor; Alves Garcia Prado, Caio; Andrei, Cristian; Andronic, Anton; Anguelov, Venelin; Anielski, Jonas; Anticic, Tome; Antinori, Federico; Antonioli, Pietro; Aphecetche, Laurent Bernard; Appelshaeuser, Harald; Arcelli, Silvia; Armesto Perez, Nestor; Arnaldi, Roberta; Arsene, Ionut Cristian; Arslandok, Mesut; Audurier, Benjamin; Augustinus, Andre; Averbeck, Ralf Peter; Azmi, Mohd Danish; Bach, Matthias Jakob; Badala, Angela; Baek, Yong Wook; Bagnasco, Stefano; Bailhache, Raphaelle Marie; Bala, Renu; Baldisseri, Alberto; Baltasar Dos Santos Pedrosa, Fernando; Baral, Rama Chandra; Barbano, Anastasia Maria; Barbera, Roberto; Barile, Francesco; Barnafoldi, Gergely Gabor; Barnby, Lee Stuart; Ramillien Barret, Valerie; Bartalini, Paolo; Barth, Klaus; Bartke, Jerzy Gustaw; Bartsch, Esther; Basile, Maurizio; Bastid, Nicole; Basu, Sumit; Bathen, Bastian; Batigne, Guillaume; Batista Camejo, Arianna; Batyunya, Boris; Batzing, Paul Christoph; Bearden, Ian Gardner; Beck, Hans; Bedda, Cristina; Behera, Nirbhay Kumar; Belikov, Iouri; Bellini, Francesca; Bello Martinez, Hector; Bellwied, Rene; Belmont Iii, Ronald John; Belmont Moreno, Ernesto; Belyaev, Vladimir; Bencedi, Gyula; Beole, Stefania; Berceanu, Ionela; Bercuci, Alexandru; Berdnikov, Yaroslav; Berenyi, Daniel; Bertens, Redmer Alexander; Berzano, Dario; Betev, Latchezar; Bhasin, Anju; Bhat, Inayat Rasool; Bhati, Ashok Kumar; Bhattacharjee, Buddhadeb; Bhom, Jihyun; Bianchi, Livio; Bianchi, Nicola; Bianchin, Chiara; Bielcik, Jaroslav; Bielcikova, Jana; Bilandzic, Ante; Biswas, Rathijit; Biswas, Saikat; Bjelogrlic, Sandro; Blanco, Fernando; Blau, Dmitry; Blume, Christoph; Bock, Friederike; Bogdanov, Alexey; Boggild, Hans; Boldizsar, Laszlo; Bombara, Marek; Book, Julian Heinz; Borel, Herve; Borissov, Alexander; Borri, Marcello; Bossu, Francesco; Botje, Michiel; Botta, Elena; Boettger, Stefan; Braun-Munzinger, Peter; Bregant, Marco; Breitner, Timo Gunther; Broker, Theo Alexander; Browning, Tyler Allen; Broz, Michal; Brucken, Erik Jens; Bruna, Elena; Bruno, Giuseppe Eugenio; Budnikov, Dmitry; Buesching, Henner; Bufalino, Stefania; Buncic, Predrag; Busch, Oliver; Buthelezi, Edith Zinhle; Buxton, Jesse Thomas; Caffarri, Davide; Cai, Xu; Caines, Helen Louise; Calero Diaz, Liliet; Caliva, Alberto; Calvo Villar, Ernesto; Camerini, Paolo; Carena, Francesco; Carena, Wisla; Castillo Castellanos, Javier Ernesto; Castro, Andrew John; Casula, Ester Anna Rita; Cavicchioli, Costanza; Ceballos Sanchez, Cesar; Cepila, Jan; Cerello, Piergiorgio; Cerkala, Jakub; Chang, Beomsu; Chapeland, Sylvain; Chartier, Marielle; Charvet, Jean-Luc Fernand; Chattopadhyay, Subhasis; Chattopadhyay, Sukalyan; Chelnokov, Volodymyr; Cherney, Michael Gerard; Cheshkov, Cvetan Valeriev; Cheynis, Brigitte; Chibante Barroso, Vasco Miguel; Dobrigkeit Chinellato, David; Chochula, Peter; Choi, Kyungeon; Chojnacki, Marek; Choudhury, Subikash; Christakoglou, Panagiotis; Christensen, Christian Holm; Christiansen, Peter; Chujo, Tatsuya; Chung, Suh-Urk; Zhang, Chunhui; Cicalo, Corrado; Cifarelli, Luisa; Cindolo, Federico; Cleymans, Jean Willy Andre; Colamaria, Fabio Filippo; Colella, Domenico; Collu, Alberto; Colocci, Manuel; Conesa Balbastre, Gustavo; Conesa Del Valle, Zaida; Connors, Megan Elizabeth; Contreras Nuno, Jesus Guillermo; Cormier, Thomas Michael; Corrales Morales, Yasser; Cortes Maldonado, Ismael; Cortese, Pietro; Cosentino, Mauro Rogerio; Costa, Filippo; Crochet, Philippe; Cruz Albino, Rigoberto; Cuautle Flores, Eleazar; Cunqueiro Mendez, Leticia; Dahms, Torsten; Dainese, Andrea; Danu, Andrea; Das, Debasish; Das, Indranil; Das, Supriya; Dash, Ajay Kumar; Dash, Sadhana; De, Sudipan; De Caro, Annalisa; De Cataldo, Giacinto; De Cuveland, Jan; De Falco, Alessandro; De Gruttola, Daniele; De Marco, Nora; De Pasquale, Salvatore; Deisting, Alexander; Deloff, Andrzej; Denes, Ervin Sandor; D'Erasmo, Ginevra; Di Bari, Domenico; Di Mauro, Antonio; Di Nezza, Pasquale; Diaz Corchero, Miguel Angel; Dietel, Thomas; Dillenseger, Pascal; Divia, Roberto; Djuvsland, Oeystein; Dobrin, Alexandru Florin; Dobrowolski, Tadeusz Antoni; Domenicis Gimenez, Diogenes; Donigus, Benjamin; Dordic, Olja

    2015-01-01

    The production of the hypertriton nuclei $^{3}_{\\Lambda}\\mathrm H$ and $^{3}_{\\bar{\\Lambda}} \\overline{\\mathrm H}$ has been measured for the first time in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV with the ALICE experiment at LHC energies. The total yield, d$N$/d$y$ $\\times \\mathrm{B.R.}_{\\left( ^{3}_{\\Lambda}\\mathrm H \\rightarrow ^{3}\\mathrm{He},\\pi^{-} \\right)} = \\left( 3.86 \\pm 0.77 (\\mathrm{stat.}) \\pm 0.68 (\\mathrm{syst.})\\right) \\times 10^{-5}$ in the 0-10% most central collisions, is consistent with the predictions from a statistical thermal model using the same temperature as for the light hadrons. The coalescence parameter $B_3$ shows a dependence on the transverse momentum, similar to the $B_2$ of deuterons and the $B_3$ of $^{3}\\mathrm{He}$ nuclei. The ratio of yields $S_3$ = $^{3}_{\\Lambda}\\mathrm H$/($^{3}\\mathrm{He}$ $\\times \\Lambda/\\mathrm{p}$) was measured to be $S_3$ = 0.60 $\\pm$ 0.13 (stat.) $\\pm$ 0.21 (syst.) in 0-10% centrality events; this value is compared to different theoretic...

  2. Trek Encore Issue 3 

    E-Print Network [OSTI]

    1985-01-01

    back at Usheen. "Yeah... " A soft cough drew their eyes off Usheen and to the person standing behind them. Sulu stared back. "I think we can get off now." Uhura winked at him, then tapping Rand on the arm, motioned her to. follow her off... groan of a seat, a muffled cough, and the tap of Usheen's fingers on the control panel. Twenty minutes later they'd left the sprawling city behind. An hour after that they were skimming over mist shrouded countryside. The sun, now well clear...

  3. Jet-driven outflows of ionised gas in the nearby radio galaxy 3C293

    E-Print Network [OSTI]

    Mahony, Elizabeth K; Morganti, Raffaella; Tadhunter, Clive; Bessiere, Patricia; Short, Philip; Emonts, Bjorn; Oosterloo, Tom

    2015-01-01

    Fast outflows of gas, driven by the interaction between the radio-jets and ISM of the host galaxy, are being observed in an increasing number of galaxies. One such example is the nearby radio galaxy 3C293. In this paper we present Integral Field Unit (IFU) observations taken with OASIS on the William Herschel Telescope (WHT), enabling us to map the spatial extent of the ionised gas outflows across the central regions of the galaxy. The jet-driven outflow in 3C293 is detected along the inner radio lobes with a mass outflow rate ranging from $\\sim 0.05-0.17$ solar masses/yr (in ionised gas) and corresponding kinetic power of $\\sim 0.5-3.5\\times 10^{40}$ erg/s. Investigating the kinematics of the gas surrounding the radio jets (i.e. not directly associated with the outflow), we find line-widths broader than $300$ km/s up to 5 kpc in the radial direction from the nucleus (corresponding to 3.5 kpc in the direction perpendicular to the radio axis at maximum extent). Along the axis of the radio jet line-widths $>400...

  4. Geometric Tracking Control of a Quadrotor UAV on SE(3)

    E-Print Network [OSTI]

    Lee, Taeyoung; McClamroch, N Harris

    2010-01-01

    This paper provides new results for the tracking control of a quadrotor unmanned aerial vehicle (UAV). The UAV has four input degrees of freedom, namely the magnitudes of the four rotor thrusts, that are used to control the six translational and rotational degrees of freedom, and to achieve asymptotic tracking of four outputs, namely, three position variables for the vehicle center of mass and the direction of one vehicle body-fixed axis. A globally defined model of the quadrotor UAV rigid body dynamics is introduced as a basis for the analysis. A nonlinear tracking controller is developed on the special Euclidean group SE(3) and it is shown to have desirable closed loop properties that are almost global. Several numerical examples, including an example in which the quadrotor recovers from being initially upside down, illustrate the versatility of the controller.

  5. Angular Distributions of Fragments Originating from the Spontaneous Fission of Oriented Nuclei and Problem of the Conservation of the Spin Projection onto the Symmetry Axis of a Fissile Nucleus

    SciTech Connect (OSTI)

    Kadmensky, S.G.; Rodionova, L.V. [Voronezh State University, Universitetskaya pl. 1, Voronezh, 394693 (Russian Federation)

    2005-09-01

    The concept of transition fission states, which was successfully used to describe the angular distributions of fragments for the spontaneous and low-energy induced fission of axisymmetric nuclei, proves to be correct if the spin projection onto the symmetry axis of a fissile nucleus is an integral of the motion for the external region from the descent of the fissile nucleus from the external fission barrier to the scission point. Upon heating a fissile nucleus in this region to temperatures of T {approx_equal} 1 MeV (this is predicted by many theoretical models of the fission process), the Coriolis interaction uniformly mixes the possible projections of the fissile-nucleus spin for the case of low spin values, this leading to the loss of memory about transition fission states in the asymptotic region where the angular distributions of fragments are formed. Within quantum-mechanical fission theory, which takes into account deviations from A. Bohr's formula, the angular distributions of fragments are calculated for spontaneously fissile nuclei aligned by an external magnetic field at ultralow temperatures, and it is shown that an analysis of experimental angular distributions of fragments would make it possible to solve the problem of spin-projection conservation for fissile nuclei in the external region.

  6. The impact of argon admixture on the c-axis oriented growth of direct current magnetron sputtered Sc{sub x}Al{sub 1?x}N thin films

    SciTech Connect (OSTI)

    Mayrhofer, P. M.; Bittner, A.; Schmid, U.; Eisenmenger-Sittner, C.; Stöger-Pollach, M.

    2014-05-21

    The piezoelectric properties of wurtzite aluminium nitride (w-AlN) are enhanced by alloying with scandium (Sc), thus offering superior properties for applications in micro electro-mechanical systems devices. Sc{sub x}Al{sub 1?x}N thin films have been prepared by DC reactive magnetron sputtering on Si (100) substrates from a single target. When targeting a concentration range from x?=?0 up to x?=?0.15, the preparation conditions have been optimized by varying the Ar/N{sub 2} ratio in the sputtering gas. To incorporate an increasing Sc concentration, a higher Ar/N{sub 2} ratio has to be applied during the deposition process. Hence, the argon concentration in the sputtering gas becomes a crucial parameter for microstructure-related parameters. To determine phase purity, degree of c-axis orientation, lattice parameter, and grain size, the Sc{sub x}Al{sub 1?x}N thin films were investigated by techniques, such as scanning electron microscopy, transmission electron microscopy, and X-ray diffraction.

  7. Two-axis sagittal focusing monochromator

    DOE Patents [OSTI]

    Haas, Edwin G; Stelmach, Christopher; Zhong, Zhong

    2014-05-13

    An x-ray focusing device and method for adjustably focusing x-rays in two orthogonal directions simultaneously. The device and method can be operated remotely using two pairs of orthogonal benders mounted on a rigid, open frame such that x-rays may pass through the opening in the frame. The added x-ray flux allows significantly higher brightness from the same x-ray source.

  8. The Chronic Kidney Disease-Colonic Axis

    E-Print Network [OSTI]

    Pahl, MV; Vaziri, ND

    2015-01-01

    dys- biosis with the use of probiotics have also been ratherCuevas ML: Effect of probiotics on human blood urea levels

  9. Multi-axis planar slide system

    DOE Patents [OSTI]

    Bieg, Lothar F. (Albuquerque, NM)

    2002-01-01

    An apparatus for positioning an item that provides two-dimensional, independent orthogonal motion of a platform in a X-Y plane. A pair of master and slave disks engages opposite sides of the platform. Rotational drivers are connected to master disks so the disks rotate eccentrically about axes of rotation. Opposing slave disks are connected to master disks on opposite sides of the platform by a timing belt, or are electronically synchronized together using stepper motors, to effect coordinated motion. The coordinated eccentric motion of the pairs of master/slave disks compels smooth linear motion of the platform in the X-Y plane without backlash. The apparatus can be a planar mechanism implemented in a MEMS device.

  10. Helical axis stellarator with noninterlocking planar coils

    DOE Patents [OSTI]

    Reiman, A.; Boozer, A.H.

    1984-03-06

    The present invention generates stellarator fields having favorable properties (magnetic well and large rotational transform) by a simple coil system consisting only of unlinked planar non-circular coils. At large rotational transform toroidal effects on magnetic well and rotational transform are small and can be ignored. We do so herein, specializing in straight helical systems.

  11. Advanced horizontal axis wind turbines in windfarms

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The wind turbine section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  12. Off-axis silicon carbide substrates

    DOE Patents [OSTI]

    Edgar, James; Dudley, Michael; Kuball, Martin; Zhang, Yi; Wang, Guan; Chen, Hui; Zhang, Yu

    2014-09-02

    A method of epitaxial growth of a material on a crystalline substrate includes selecting a substrate having a crystal plane that includes a plurality of terraces with step risers that join adjacent terraces. Each terrace of the plurality or terraces presents a lattice constant that substantially matches a lattice constant of the material, and each step riser presents a step height and offset that is consistent with portions of the material nucleating on adjacent terraces being in substantial crystalline match at the step riser. The method also includes preparing a substrate by exposing the crystal plane; and epitaxially growing the material on the substrate such that the portions of the material nucleating on adjacent terraces merge into a single crystal lattice without defects at the step risers.

  13. Dual Axis Radiographic Hydrodynamic Test Facility

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you not find what you wereDisclaimers WelcomeResearch >DOE Office

  14. T-Negative Issue 3 

    E-Print Network [OSTI]

    Berman, Ruth

    1972-01-01

    J;?J going on. landing part1e, ,s wa~ co.n~Hd~reda privl1ege~ (for the chaRge of ,se, enery almpst as ID\\.lch" a.S the excitement) . Out of ami.$placed (to her .,' '.. ? ,. "'; ~ " , ," < 11- way of thinklng) chivalry, Kirk usually left her behind...

  15. Project Scheduling (3) Corequisite

    E-Print Network [OSTI]

    Barrash, Warren

    English Composition (3) BUSCOM 201 * Business Communications (3) Labor Relations (HRM 305, 330 or 340) (3 374 ** 2 Labor Relations (select one) HRM 305, 330, 340 3 Area II Core Course (note 5) 3 Specialty

  16. NH3 formation and utilization in regenerationof Pt/Ba/Al2O3 NOx storage-reduction catalyst with H2

    SciTech Connect (OSTI)

    Partridge Jr, William P [ORNL; Choi, Jae-Soon [ORNL

    2009-01-01

    The nature of H2 regeneration of a model Pt/Ba/Al2O3 LNT catalyst was investigated with specific focus on intra-catalyst formation and utilization of NH3 and its role in catalyst regeneration. In-situ measurements of the transient intra-catalyst species (H2, NH3, N2, NOx) distributions at different temperatures were used to detail the reaction evolution along the catalyst axis. Comparison of the species transients identifies unique individual natures for the reductant (H2), inert product (N2) and intermediate-reductant product (NH3) which readily explain the conventional effluent species sequence as an integral effect. The data demonstrates that NH3 is created on similar timescales as the N2 product inside the catalyst, but consumed as aggressively as H2 reductant along the catalyst. This spatiotemporal NH3 behavior experimentally confirms that Intermediate-NH3 regeneration pathway is active. Analysis at 200 and 325 C indicates equivalent local NOx storage, H2 consumption and regeneration effectiveness, but differing NH3/N2 ratio, suggesting a temperature-dependence of partitioning between Direct-H2 and Intermediate-NH3 regeneration pathways. Further experimental and numerical work is needed to more clearly understand the partitioning between the possible regeneration pathways. Nevertheless, the experimental data show that intermediate NH3 plays a significant role in LNT catalyst regeneration.

  17. 3, 35433588, 2003 3-D air pollution

    E-Print Network [OSTI]

    Boyer, Edmond

    ACPD 3, 3543­3588, 2003 3-D air pollution modelling L. M. Frohn et al. Title Page Abstract hemispheric nested air pollution model L. M. Frohn, J. H. Christensen, J. Brandt, C. Geels, and K. M. Hansen 2003 Correspondence to: L. M. Frohn (lmf@dmu.dk) 3543 #12;ACPD 3, 3543­3588, 2003 3-D air pollution

  18. EPSRC Report 3/3/1998 -2/3/2000

    E-Print Network [OSTI]

    Sengun, Mehmet Haluk

    the attenuation signals experience in media with random material properties (IMA J. Appl. Math. 63, 1-20 (1999EPSRC Report 3/3/1998 - 2/3/2000 New ideas to improve semiconductor laser efficiency which exploits the finite flux solutions of the quantum Boltzmann equation to improve semiconductor

  19. 3-D Graphics in R Ohio State University

    E-Print Network [OSTI]

    Gotelli, Nicholas J.

    plotmath characters as axis labels. Therefore, one is stuck with "Alpha" instead of "" for axis labels plots. The next option in R is to use the wireframe command from the lattice package. The lattice library is an R implementation of the trellis graphics package in S-plus. While the lattice package can do

  20. Electron-irradiation induced phase transformation in La{sub 1/3}Zr{sub 2}(PO{sub 4}){sub 3}: La{sup 3+} displacement in a preserved NASICON framework

    SciTech Connect (OSTI)

    Crosnier-Lopez, M.P. . E-mail: marie-pierre.crosnier-lopez@univ-lemans.fr; Barre, M.; Le Berre, F.; Fourquet, J.L.

    2006-08-15

    The La{sub 1/3}Zr{sub 2}(PO{sub 4}){sub 3} NASICON-type compound (S.G. P3-bar - neutron and X-ray diffraction experiments) is investigated by transmission electron microscopy (TEM) technique, selected area electron diffraction (SAED) and high-resolution electron microscopy (HREM), in order to study locally the lanthanum distribution. An irreversible structural transformation (P-bar -bar -bar ->P-bar c-bar ->R-bar -bar -bar ) is observed, without modification of the atomic content and cell size, as soon as the phase is illuminated by the electron beam. The progressive disappearance of the spots which do not check the R conditions on the SAED patterns is clearly shown along two zone axis, [001] and [100]. This transformation implies the displacement of the two La{sup 3+} cations in a preserved classical [Zr{sub 2}(PO{sub 4}){sub 3}]{sup -} network. This interesting behavior is in good agreement with the La{sup 3+} ionic conductivity observed in La{sub 1/3}Zr{sub 2}(PO{sub 4}){sub 3} (4.09x10{sup -7}Scm{sup -1} at 700 deg. C). To our knowledge, this is the first time that a complete TEM study is done on a NASICON-type phase.

  1. 3D Model of the Neal Hot Springs Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    The Neal Hot Springs geothermal system lies in a left-step in a north-striking, west-dipping normal fault system, consisting of the Neal Fault to the south and the Sugarloaf Butte Fault to the north (Edwards, 2013). The Neal Hot Springs 3D geologic model consists of 104 faults and 13 stratigraphic units. The stratigraphy is sub-horizontal to dipping <10 degrees and there is no predominant dip-direction. Geothermal production is exclusively from the Neal Fault south of, and within the step-over, while geothermal injection is into both the Neal Fault to the south of the step-over and faults within the step-over.

  2. 3D Model of the San Emidio Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    James E. Faulds

    2013-12-31

    The San Emidio geothermal system is characterized by a left-step in a west-dipping normal fault system that bounds the western side of the Lake Range. The 3D geologic model consists of 5 geologic units and 55 faults. Overlying Jurrassic-Triassic metasedimentary basement is a ~500 m-1000 m thick section of the Miocene lower Pyramid sequence, pre- syn-extensional Quaternary sedimentary rocks and post-extensional Quaternary rocks. 15-30º eastward dip of the stratigraphy is controlled by the predominant west-dipping fault set. Both geothermal production and injection are concentrated north of the step over in an area of closely spaced west dipping normal faults.

  3. 3D Model of the Neal Hot Springs Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    2013-12-31

    The Neal Hot Springs geothermal system lies in a left-step in a north-striking, west-dipping normal fault system, consisting of the Neal Fault to the south and the Sugarloaf Butte Fault to the north (Edwards, 2013). The Neal Hot Springs 3D geologic model consists of 104 faults and 13 stratigraphic units. The stratigraphy is sub-horizontal to dipping <10 degrees and there is no predominant dip-direction. Geothermal production is exclusively from the Neal Fault south of, and within the step-over, while geothermal injection is into both the Neal Fault to the south of the step-over and faults within the step-over.

  4. 3D Model of the San Emidio Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    James E. Faulds

    The San Emidio geothermal system is characterized by a left-step in a west-dipping normal fault system that bounds the western side of the Lake Range. The 3D geologic model consists of 5 geologic units and 55 faults. Overlying Jurrassic-Triassic metasedimentary basement is a ~500 m-1000 m thick section of the Miocene lower Pyramid sequence, pre- syn-extensional Quaternary sedimentary rocks and post-extensional Quaternary rocks. 15-30º eastward dip of the stratigraphy is controlled by the predominant west-dipping fault set. Both geothermal production and injection are concentrated north of the step over in an area of closely spaced west dipping normal faults.

  5. 3D NUCLEAR SEGMENTAT

    Energy Science and Technology Software Center (OSTI)

    003029WKSTN00 Delineation of nuclear structures in 3D multicellular systems  https://vision.lbl.gov/Software/3DMorphometry/ 

  6. Singlet-triplet dispersion reveals additional frustration in the triangular dimer compound Ba$_3$Mn$_2$O$_8$

    SciTech Connect (OSTI)

    Stone, Matthew B [ORNL; Lumsden, Mark D [ORNL; Chang, S. [Ames Laboratory; Samulon, Eric C [Stanford University; Batista, C. D. [Los Alamos National Laboratory (LANL); Fisher, Ian R [Stanford University

    2008-01-01

    We present single crystal inelastic neutron scattering measurements of the $S=1$ dimerized quasi-two-dimensional antiferromagnet Ba$_3$Mn$_2$O$_8$. The singlet-triplet dispersion reveals nearest-neighbor and next-nearest-neighbor ferromagnetic interactions between adjacent bilayers that compete against each other. Although the inter-bilayer exchange is comparable to the intra-bilayer exchange, this additional frustration reduces the effective coupling along the $c$-axis and leads to a quasi-two dimensional behavior. In addition, the obtained exchange values are able to reproduce the four critical fields in the phase diagram.

  7. Growth of epitaxial (Sr,Ba){sub n+1}Ru{sub n}O{sub 3n+1} films

    SciTech Connect (OSTI)

    Schlom, D.G.; Knapp, S.B.; Wozniak, S. [Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering] [and others

    1997-12-01

    We have grown epitaxial (Sr,Ba) (n+1)Ru(n)O(3n+1) films, n = 1, 2, and infinity, by pulsed laser deposition (PLD) and controlled their orientation by choosing appropriate substrates. The growth conditions yielding phase pure films have been mapped out. Resistivity versus temperature measurements show that both a and c axis films of Sr2RuO4 are metallic, but not superconducting. The latter is probably due to the presence of low-level impurities that are difficult to avoid given the target preparation process involved in growing these films by PLD.

  8. 1. If anyone has questions about Rosetta or consulting in general, feel free to message me @SoupForSara ... That's all from me! Thanks!3:03 PM Sep

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    ForSara ... That's all from me! Thanks!3:03 PM Sep 21st via web 2. Well, looks like today will be an early one. Client meeting done, so nothing left to do tonight. Time to head home.2:57 PM Sep 21st via web 3. Have hour -- every minute counts.2:44 PM Sep 21st via web 4. Meeting went really well! Client was happy

  9. Interaction transfer of silicon atoms forming Co silicide for Co/?(3)×?(3)R30°-Ag/Si(111) and related magnetic properties

    SciTech Connect (OSTI)

    Chang, Cheng-Hsun-Tony; Fu, Tsu-Yi; Tsay, Jyh-Shen

    2015-05-07

    Combined scanning tunneling microscopy, Auger electron spectroscopy, and surface magneto-optic Kerr effect studies were employed to study the microscopic structures and magnetic properties for ultrathin Co/?(3)×?(3)R30°-Ag/Si(111). As the annealing temperature increases, the upward diffusion of Si atoms and formation of Co silicides occurs at temperature above 400?K. Below 600?K, the ?(3)×?(3)R30°-Ag/Si(111) surface structure persists. We propose an interaction transferring mechanism of Si atoms across the ?(3)×?(3)R30°-Ag layer. The upward transferred Si atoms react with Co atoms to form Co silicide. The step height across the edge of the island, a separation of 0.75?nm from the analysis of the 2?×?2 structure, and the calculations of the normalized Auger signal serve as strong evidences for the formation of CoSi{sub 2} at the interface. The interaction transferring mechanism for Si atoms enhances the possibility of interactions between Co and Si atoms. The smoothness of the surface is advantage for that the easy axis of magnetization for Co/?(3)×?(3)R30°-Ag/Si(111) is in the surface plane. This provides a possible way of growing flat magnetic layers on silicon substrate with controllable silicide formation and shows potential applications in spintronics devices.

  10. Anisotropy of the Irreversibility Field for Zr-doped (Y,Gd)Ba2<\\sub>Cu3<\\sub>O<7-x<\\sub> Thin Films up to 45 T

    SciTech Connect (OSTI)

    Tarantini, C. [Florida State University; Jaroszynski, J. [Florida State University; Kametani, F. [Florida State University; Zuev, Yuri L [ORNL; Gurevich, A. [Florida State University; Chen, Y [SuperPower Incorporated, Schenectady, New York; Selvamanickam, V. [SuperPower Incorporated, Schenectady, New York; Larbalestier, D. C. [Florida State University; Christen, David K [ORNL

    2011-01-01

    The anisotropic irreversibility fieldBIrr of twoYBa2Cu3O7 x thin films dopedwith additional rare earth (RE)= (Gd, Y) and Zr and containing strong correlated pins (splayed BaZrO3 nanorods and RE2O3 anoprecipitates) has been measured over a very broad range up to 45 T at temperatures 56 K < T < Tc. We found that the experimental angular dependence of BIrr ( ) does not follow the mass anisotropy scaling BIrr ( ) = BIrr (0)(cos2 + 2 sin2 ) 1/2, where = (mc/mab)1/2 = 5 6 for the RE-doped Ba2Cu3O7 x (REBCO) crystals, mab and mc are the effective masses along the ab plane and the c-axis, respectively, and is the angle between B and the c-axis. For B parallel to the ab planes and to the c-axis correlated pinning strongly enhances BIrr , while at intermediate angles, BIrr ( ) follows the scaling behavior BIrr ( ) (cos2 + 2 RP sin2 ) 1/2 with the effective anisotropy factor RP 3 significantly smaller than the ass anisotropy would suggest. In spite of the strong effects of c-axis BaZrO3 nanorods, we found even greater enhancements of BIrr for fields along the ab planes than for fields parallel to the c-axis, as well as different temperature dependences of the correlated pinning contributions to BIrr for B//ab and B//c. Our results show that the dense and strong pins, which can now be incorporated into REBCO thin films in a controlled way, exert major and diverse effects on the measured vortex pinning anisotropy and the irreversibility field over wide ranges of B and T . In particular, we show that the relative contribution of correlated pinning to BIrr for B//c increases as the temperature increases due to the suppression of thermal fluctuations of vortices by splayed distribution of BaZrO3 nanorods.

  11. Field Experience with 3-Sun Mirror Module Systems

    SciTech Connect (OSTI)

    Fraas, Dr. Lewis; Avery, James E.; Huang, H,; Minkin, Leonid M; Fraas, J. X.; Maxey, L Curt; Gehl, Anthony C

    2008-01-01

    JX Crystals 3-sun PV mirror modules have now been operating in four separate systems in the field for up to 2 years. Two post-mounted 2-axis tracking arrays of 12 modules each were installed at the Shanghai Flower Park in April of 2006. Then 672 modules were installed in a 100 kW array on N-S horizontal beam trackers at the Shanghai Flower Port in November of 2006. Finally, sets of 4 modules were installed on azimuth-tracking carousels on buildings at the Oak Ridge National Lab and at the U. of Nevada in Las Vegas in late 2007. All of these modules in each of these systems are still operating at their initial power ratings. No degradation in performance has been observed. The benefit of these 3-sun PV mirror modules is that they use 1/3 of the silicon single-crystal cell material in comparison to traditional planar modules. Since aluminum mirrors are much cheaper than high-purity single-crystal silicon-cells, these modules and systems should be much lower in cost when manufactured in high volume.

  12. A Precision Measurement of the Neutron Twist-3 Matrix Element $d_2^n$: Probing Color Forces

    E-Print Network [OSTI]

    M. Posik; D. Flay; D. S. Parno; K. Allada; W. Armstrong; T. Averett; F. Benmokhtar; W. Bertozzi; A. Camsonne; M. Canan; G. D. Cates; C. Chen; J. -P. Chen; S. Choi; E. Chudakov; F. Cusanno; M. M. Dalton; W. Deconinck; C. W. de Jager; X. Deng; A. Deur; C. Dutta; L. El Fassi; G. B. Franklin; M. Friend; H. Gao; F. Garibaldi; S. Gilad; R. Gilman; O. Glamazdin; S. Golge; J. Gomez; L. Guo; O. Hansen; D. W. Higinbotham; T. Holmstrom; J. Huang; C. Hyde; H. F. Ibrahim; X. Jiang; G. Jin; J. Katich; A. Kelleher; A. Kolarkar; W. Korsch; G. Kumbartzki; J. J. LeRose; R. Lindgren; N. Liyanage; E. Long; A. Lukhanin; V. Mamyan; D. McNulty; Z. -E. Meziani; R. Michaels; M. Mihovilovi?; B. Moffit; N. Muangma; S. Nanda; A. Narayan; V. Nelyubin; B. Norum; Nuruzzaman; Y. Oh; J. C. Peng; X. Qian; Y. Qiang; A. Rakhman; S. Riordan; A. Saha; B. Sawatzky; M. H. Shabestari; A. Shahinyan; S. Širca; P. Solvignon; R. Subedi; V. Sulkosky; W. A. Tobias; W. Troth; D. Wang; Y. Wang; B. Wojtsekhowski; X. Yan; H. Yao; Y. Ye; Z. Ye; L. Yuan; X. Zhan; Y. Zhang; Y. -W. Zhang; B. Zhao; X. Zheng

    2014-07-03

    Double-spin asymmetries and absolute cross sections were measured at large Bjorken $x$ (0.25 $ \\le x \\le $ 0.90), in both the deep-inelastic and resonance regions, by scattering longitudinally polarized electrons at beam energies of 4.7 and 5.9 GeV from a transversely and longitudinally polarized $^3$He target. In this dedicated experiment, the spin structure function $g_2$ on $^3$He was determined with precision at large $x$, and the neutron twist-three matrix element $d_2^n$ was measured at $\\left$ of 3.21 and 4.32 GeV$^2$/$c^2$, with an absolute precision of about $10^{-5}$. Our results are found to be in agreement with lattice QCD calculations and resolve the disagreement found with previous data at $\\left =$ 5 GeV$^2$/$c^2$. Combining $d_2^n$ and a newly extracted twist-four matrix element, $f_2^n$, the average neutron color electric and magnetic forces were extracted and found to be of opposite sign and about 30 MeV/fm in magnitude.

  13. Deforming convex RP3-structures on 3-orbifolds Deforming convex RP3-structures on 3-orbifolds

    E-Print Network [OSTI]

    Choi, Suhyoung

    Deforming convex RP3-structures on 3-orbifolds Deforming convex RP3-structures on 3-orbifolds-structures on 3-orbifolds Introduction Orbifolds and RPn-structures Orbifolds By an n-dimensional orbifold . an inclusion Uj Ui induces an equivariant map ~Uj ~Ui with respect to Gj Gi . A RPn-structure on an orbifold

  14. Deforming convex RP3-structures on 3-orbifolds Deforming convex RP3-structures on 3-orbifolds

    E-Print Network [OSTI]

    Choi, Suhyoung

    Deforming convex RP3-structures on 3-orbifolds Deforming convex RP3-structures on 3-orbifolds-structures on 3-orbifolds Outline A RPn-structure (projectively flat structure; real projective structure; projective structure) on an orbifold is a geometric structure on the orbifold modelled on (RPn, PGL(n + 1, R

  15. Theoretical investigation of the magnetic structure in YBa_2Cu_3O_6

    E-Print Network [OSTI]

    Ekkehard Krüger

    2006-08-07

    As experimentally well established, YBa_2Cu_3O_6 is an antiferromagnet with the magnetic moments lying on the Cu sites. Starting from this experimental result and the assumption, that nearest-neighbor Cu atoms within a layer have exactly antiparallel magnetic moments, the orientation of the magnetic moments has been determined within a nonadiabatic extension of the Heisenberg model of magnetism, called nonadiabatic Heisenberg model. Within this group-theoretical model there exist four stable magnetic structures in YBa_2Cu_3O_6, two of them are obviously identical with the high- and low-temperature structure established experimentally. However, not all the magnetic moments which appear to be antiparallel in neutron-scattering experiments are exactly antiparallel within this group-theoretical model. Furthermore, within this model the magnetic moments are not exactly perpendicular to the orthorhombic c axis.

  16. 3.3.3AC Sweep AC . AC

    E-Print Network [OSTI]

    ­. DC ­ AC ­) .( . ­ ,, '­Spice .Spice . : 0 0 E1 PWR(V(%IN+, %IN . )2.3( Etable " . . : 00 V1 0Vdc E2 Pwr(V(%IN+, %IN-),2) ETABLE TABLE = (5

  17. LEDs_3LEDs_3 current efficiency

    E-Print Network [OSTI]

    Pulfrey, David L.

    1 LEDs_3LEDs_3 LECTURE 12 · current efficiency · extraction efficiency · wall-plug efficiency efficiencySec. 8.4 How much power gets out for GaAs? Adapted from Schubert, loc. cit. #12;5 Design to improve extraction efficiencyDesign to improve extraction efficiencySec. 8.4 What are the features of this LED from

  18. Track 3: Exposure Hazards

    Broader source: Energy.gov [DOE]

    ISM Workshop Presentations Knoxville Convention Center, Knoxville, TN August 2009 Track 3: Exposure Hazards

  19. I Left My Body Lying Somewhere 

    E-Print Network [OSTI]

    2007-03-27

    , and promised they would write porn and get back to the poster, with hilarious results. My involvement was limited to a few thread-freezings(I like to dominate my members, to see them driven before me, and to hear the lamentations in their capslocks...

  20. [Cover page, Margins: Left 1 in

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

    can be requested by telephone by dialing 9-911 from any Nortel telephone or 911 from a cell phone. Assembly points, where personnel evacuating US ITER office must congregate in an...

  1. Conserving Energy with No Watt Left Behind

    E-Print Network [OSTI]

    Leeb, Steven B.

    Facilities managers for industrial and commercial sites want to develop detailed electrical consumption profiles of their electrical and electromechanical loads, including expensive physical plant for heating, ventilation, ...

  2. [Cover page, Margins: Left 1 in

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnicalInformation4563 LLNL Small-scale Friction Sensitivityv b W r88 LunarOrganic

  3. default_sidebar_left | NSAC Subcommittee 2012

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos AlamosSimulation Initiative798/%2ANewdefault Sign In About |Wind

  4. Selective interlayer ferromagnetic coupling between the Cu spins in YBa2Cu3O7–x grown on top of La0.7Ca0.3MnO3

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

    Huang, S. W.; Wray, L. Andrew; Jeng, Horng -Tay; Tra, V. T.; Lee, J. M.; Langner, M. C.; Chen, J. M.; Roy, S.; Chu, Y. H.; Schoenlein, R. W.; et al

    2015-11-17

    Studies to date on ferromagnet/d-wave superconductor heterostructures focus mainly on the effects at or near the interfaces while the response of bulk properties to heterostructuring is overlooked. Here we use resonant soft x-ray scattering spectroscopy to reveal a novel c-axis ferromagnetic coupling between the in-plane Cu spins in YBa2Cu3O7–x (YBCO) superconductor when it is grown on top of ferromagnetic La0.7Ca0.3MnO3 (LCMO) manganite layer. This coupling, present in both normal and superconducting states of YBCO, is sensitive to the interfacial termination such that it is only observed in bilayers with MnO2 but not with La0.7Ca0.3O interfacial termination. Thus, such contrasting behaviors,more »we propose, are due to distinct energetic of CuO chain and CuO2 plane at the La0.7Ca0.3O and MnO2 terminated interfaces respectively, therefore influencing the transfer of spin-polarized electrons from manganite to cuprate differently. Our findings suggest that the superconducting/ferromagnetic bilayers with proper interfacial engineering can be good candidates for searching the theorized Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state in cuprates and studying the competing quantum orders in highly correlated electron systems.« less

  5. Mössbauer investigations of hyperfine interactions features of {sup 57}Fe nuclei in BiFeO{sub 3} ferrite

    SciTech Connect (OSTI)

    Sobolev, Alexey, E-mail: salex12@rambler.ru; Presniakov, Igor, E-mail: salex12@rambler.ru; Rusakov, Vyacheslav, E-mail: salex12@rambler.ru; Matsnev, Mikhail; Gorchakov, Dmitry; Glazkova, Iana [Lomonosov Moscow State University, 119991, Moscow (Russian Federation); Belik, Alexey [International Center for Materials Nanoarchitectonics (MANA), National Institute for Material Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044 (Japan)

    2014-10-27

    New results of {sup 57}Fe Mössbauer studies on BiFeO{sub 3} powder sample performed at various temperatures above and below magnetic phase transitions point T{sub N} ? 640K are reported. We have performed self-consistent calculations of the lattice contributions to the EFG tensor, taking into account dipole moments of the O{sup 2?} and Bi{sup 3+} ions. Low-temperature {sup 57}Fe Mössbauer spectra recorded at T < T{sub N} were analyzed assuming an anharmonic cycloidal modulation of the Fe{sup 3+} magnetic moments. The cycloidal modulation of the iron spin was described with the elliptic Jacobi function sn[(±4K(m)/?)x,m]. The good fit of the experimental spectra was obtained for the anharmonicity m = 0.44 ± 0.04 (T = 4.9K) resulting from the easy-axis magnetic anisotropy.

  6. The Earth-Moon CR3BP: A full Atlas of low-energy fast periodic transfer orbits

    E-Print Network [OSTI]

    Alejandro M. Leiva; Carlos B. Briozzo

    2006-12-14

    In the framework of the planar CR3BP for mass parameter mu=0.0121505, corresponding to the Earth-Moon system, we identify and describe 80 families of periodic orbits encircling both the Earth and the Moon ("transfer" orbits). All the orbits in these families have very low energies, most of them corresponding to values of the Jacobi constant C for which the Hill surface is closed at the Lagrangian point L2. All of these orbits have also short period T, generally under six months. Most of the families are composed of orbits that are asymmetric with respect to the Earth-Moon axis. The main results presented for each family are: (i) the characteristic curves T(h), y(h), v_y(h), and v_x(h) on the Poincare section Sigma_1={x=0.836915310,y,v_x>0,v_y} normal to the Earth-Moon axis at the Lagrangian point L1, parameterized by their energy h=-C/2 in the synodic coordinate system; (ii) the stability parameter along each family; (iii) the intersections x_i(h) of the orbits with the Earth-Moon axis, on the Poincare section Sigma_2={x,y=0,v_x},v_y>0}; (iv) plots of some selected orbits and details of their circumlunar region; and (v) numerical data for the intersection of an orbit with Sigma_1 at a reference value of h. Some possible extensions and applications of this work are also discussed.

  7. Ferroelectric and ferromagnetic properties in BaTiO{sub 3} thin films on Si (100)

    SciTech Connect (OSTI)

    Singamaneni, Srinivasa Rao, E-mail: ssingam@ncsu.edu; Prater, John T. [Materials Science Division, Army Research Office, Research Triangle Park, North Carolina 27709 (United States); Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States); Punugupati, Sandhyarani; Hunte, Frank; Narayan, Jagdish [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States)

    2014-09-07

    In this paper, we report on the epitaxial integration of room temperature lead-free ferroelectric BaTiO{sub 3} thin (?1050?nm) films on Si (100) substrates by pulsed laser deposition technique through a domain matching epitaxy paradigm. We employed MgO and TiN as buffer layers to create BaTiO{sub 3}/SrRuO{sub 3}/MgO/TiN/Si (100) heterostructures. C-axis oriented and cube-on-cube epitaxial BaTiO{sub 3} is formed on Si (100) as evidenced by the in-plane and out-of-plane x-ray diffraction, and transmission electron microscopy. X-ray photoemission spectroscopic measurements show that Ti is in 4(+) state. Polarization hysteresis measurements together with Raman spectroscopy and temperature-dependent x-ray diffraction confirm the room temperature ferroelectric nature of BaTiO{sub 3}. Furthermore, laser irradiation of BaTiO{sub 3} thin film is found to induce ferromagnetic-like behavior but affects adversely the ferroelectric characteristics. Laser irradiation induced ferromagnetic properties seem to originate from the creation of oxygen vacancies, whereas the pristine BaTiO{sub 3} shows diamagnetic behavior, as expected. This work has opened up the route for the integration of room temperature lead-free ferroelectric functional oxides on a silicon platform.

  8. High critical currents in heavily doped (Gd,Y)Ba2Cu3Ox superconductor tapes

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

    Selvamanickam, V.; Gharahcheshmeh, M. Heydari; Xu, A.; Galstyan, E.; Delgado, L.; Cantoni, C.

    2015-01-20

    REBa2Cu3Ox superconductor tapes with moderate levels of dopants have been optimized for high critical current density in low magnetic fields at 77 K, but they do not exhibit exemplary performance in conditions of interest for practical applications, i.e., temperatures less than 50 K and fields of 2–30 T. Heavy doping of REBCO tapes has been avoided by researchers thus far due to deterioration in properties. Here, we report achievement of critical current densities (Jc) above 20 MA/cm2 at 30 K, 3 T in heavily doped (25 mol. % Zr-added) (Gd,Y)Ba2Cu3Ox superconductor tapes, which is more than three times higher thanmore »the Jc typically obtained in moderately doped tapes. Pinning force levels above 1000 GN/m3 have also been attained at 20 K. A composition map of lift factor in Jc (ratio of Jc at 30 K, 3 T to the Jc at 77 K, 0 T) has been developed which reveals the optimum film composition to obtain lift factors above six, which is thrice the typical value. A highly c-axis aligned BaZrO3 (BZO) nanocolumn defect density of nearly 7 × 1011 cm–2 as well as 2–3nm sized particles rich in Cu and Zr have been found in the high Jc films.« less

  9. In-situ x-ray diffraction study of the growth of highly strained epitaxial BaTiO{sub 3} thin films

    SciTech Connect (OSTI)

    Sinsheimer, J.; Callori, S. J.; Ziegler, B.; Bein, B.; Dawber, M. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800 (United States)] [Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800 (United States); Chinta, P. V.; Ashrafi, A.; Headrick, R. L. [Department of Physics, Cook Physical Science Building, University of Vermont, Burlington, Vermont 05405 (United States)] [Department of Physics, Cook Physical Science Building, University of Vermont, Burlington, Vermont 05405 (United States)

    2013-12-09

    In-situ synchrotron x-ray diffraction was performed during the growth of BaTiO{sub 3} thin films on SrTiO{sub 3} substrates using both off-axis RF magnetron sputtering and pulsed laser deposition techniques. It was found that the films were ferroelectric during the growth process, and the presence or absence of a bottom SrRuO{sub 3} electrode played an important role in the growth of the films. Pulsed laser deposited films on SrRuO{sub 3} displayed an anomalously high tetragonality and unit volume, which may be connected to the previously predicted negative pressure phase of BaTiO{sub 3}.

  10. Macadamia integrifolia (Cultivated) 3 

    E-Print Network [OSTI]

    David C. Reed

    2011-08-10

    This report presents results from the testing and validation of the Energy Systems Laboratory’s web-based software tool - International Code Compliance Calculator (IC3), v3.10, using the Residential Energy Services ...

  11. Goethea strictiflora (Cultivated) 3 

    E-Print Network [OSTI]

    David C. Reed

    2011-08-10

    Much research has been conducted on type II pyrethroid pesticides but there is a paucity of research conducted on metabolites from these pesticides. 3-phenoxybenzoic acid and 3-phenoxybenzyl alcohol are two metabolites ...

  12. Cell, Vol. 121, 633644, May 20, 2005, Copyright 2005 by Elsevier Inc. DOI 10.1016/j.cell.2005.04.008 Mechanism of Nodal Flow: A Conserved Symmetry

    E-Print Network [OSTI]

    Voigt, Chris

    .04.008 Mechanism of Nodal Flow: A Conserved Symmetry Breaking Event in Left-Right Axis Determination Yasushi Okada gradients as a sub- sequent mechanism of left-right axis determination. Finally, we experimentally oriented according to the preceding A-P and D-V axes. The mechanism that en- ables this coordination

  13. Accelerators (3/5)

    SciTech Connect (OSTI)

    2009-07-07

    1a) Introduction and motivation 1b) History and accelerator types 2) Transverse beam dynamics 3a) Longitudinal beam dynamics 3b) Figure of merit of a synchrotron/collider 3c) Beam control 4) Main limiting factors 5) Technical challenges Prerequisite knowledge: Previous knowledge of accelerators is not required.

  14. Accelerators (3/5)

    ScienceCinema (OSTI)

    None

    2011-10-06

    1a) Introduction and motivation 1b) History and accelerator types 2) Transverse beam dynamics 3a) Longitudinal beam dynamics 3b) Figure of merit of a synchrotron/collider 3c) Beam control 4) Main limiting factors 5) Technical challenges Prerequisite knowledge: Previous knowledge of accelerators is not required.

  15. 3 Library Regulations Definitions

    E-Print Network [OSTI]

    Mottram, Nigel

    3 Library Regulations Definitions In Regulation 3: 'Library' means the University Library as defined in Regulation 3.1; 'Library staff' means the staff of the University Library; 'Librarian' means the University Librarian and Head of Information Resources Directorate or nominee; `Library Committee' means

  16. ESR spectra and structure of the perchloryl fluoride radical anion (FC1O/sub 3//sup -/): A 33 valence electron radical with C/sub 30/ symmetry

    SciTech Connect (OSTI)

    Hasegawa, A.; Williams, F.

    1981-12-02

    The isotropic and anisotropic ESR spectra of FClO/sub 3//sup -/ have been observed, the former in the SF/sub 6/ matrix and the latter in both the FClO/sub 3/ and (CH/sub 3/)/sub 4/Si matrices. The isotropic hyperfine coupling constants derived from the anisotropic parameters agree with the values (/sup 35/a = 656 MHz, /sup 37/a = 546 MHz, /sup 19/a = 726 MHz) obtained from the isotropic spectrum. Moreover, the analysis of the anisotropic spectrum reveals that the chlorine and fluorine hyperfine tensors have cylindrical symmetry with their largest principal values lying along the same principal axis. This result rules out a trigonal-bipyramidal structure for this 33 valence electron radical but is entirely consistent with a C/sub 3/V structure in which the Cl-F bond represents the symmetry axis (z). Most of the spin density is concentrated in the antibonding sigma/sub Cl-F/* orbital which is composed of the 3s and 3p/sub z/ orbitals of chlorine (p/sub 3s/ = 0.14, p/sub 3p/ = 0.40) in combination with the 2p/sub z/ orbital of fluorine (p = 0.35). These results are in qualitative agreement with CNDO/2 calculations which also show that the Cl-F bond is longer in the radical anion than in the parent molecule. As expected from a consideration of its electronic structure, FClO/sub 3//sup -/ dissociates to give the neutral ClO/sub 3/ radical which has been detected in the SF/sub 6/ matrix.

  17. X-Ray Emission from the Pre-Planetary Nebula Henize 3-1475

    E-Print Network [OSTI]

    Sahai, R; Frank, A; Morris, M; Blackman, E G; Sahai, Raghvendra; Kastner, Joel H.; Frank, Adam; Morris, Mark; Blackman, Eric G.

    2003-01-01

    We report the first detection of X-ray emission in a pre-planetary nebula, Hen 3-1475. Pre-planetary nebulae are rare objects in the short transition stage between the Asymptotic Giant Branch and planetary nebula evolutionary phases, and Hen 3-1475, characterised by a remarkable S-shaped chain of optical knots, is one of the most noteworthy members of this class. Observations with the Advanced CCD Imaging Spectrometer (ACIS) onboard the Chandra X-Ray observatory show the presence of compact emission coincident with the brightest optical knot in this bipolar object, which is displaced from the central star by 2.7 arcsec along the polar axis. Model fits to the X-ray spectrum indicate an X-ray temperature and luminosity, respectively, of (4.3-5.7) 10^6 K and (4+/-1.4) 10^{31} (D/5 kpc)^2 erg s^{-1}, respectively. Our 3-sigma upper limit on the luminosity of compact X-ray emission from the central star in Hen 3-1475 is ~5 10^{31} (D/5 kpc)^2 erg s^{-1}. The detection of X-rays in Hen 3-1475 is consistent with mod...

  18. Perfect Abelian dominance of confinement in quark-antiquark potential in SU(3) lattice QCD

    E-Print Network [OSTI]

    Hideo Suganuma; Naoyuki Sakumichi

    2014-12-29

    In the context of the dual superconductor picture for the confinement mechanism, we study maximally Abelian (MA) projection of quark confinement in SU(3) quenched lattice QCD with $32^4$ at $\\beta$=6.4 (i.e., $a \\simeq$ 0.058 fm). We investigate the static quark-antiquark potential $V(r)$, its Abelian part $V_{\\rm Abel}(r)$ and its off-diagonal part $V_{\\rm off}(r)$, respectively, from the on-axis lattice data. As a remarkable fact, we find almost perfect Abelian dominance for quark confinement, i.e., $\\sigma_{\\rm Abel} \\simeq \\sigma$ for the string tension, on the fine and large-volume lattice. We find also a nontrivial summation relation of $V(r) \\simeq V_{\\rm Abel}(r) + V_{\\rm off}(r)$.

  19. Introducing a new 3D dynamical model for barred galaxies

    E-Print Network [OSTI]

    Jung, Christof

    2015-01-01

    The regular or chaotic dynamics of an analytical realistic three dimensional model composed of a spherically symmetric central nucleus, a bar and a flat disk is investigated. For describing the properties of the bar we introduce a new simple dynamical model and we explore the influence on the character of orbits of all the involved parameters of it, such as the mass and the scale length of the bar, the major semi-axis and the angular velocity of the bar as well as the energy. Regions of phase space with ordered and chaotic motion are identified in dependence on these parameters and for breaking the rotational symmetry. First we study in detail the dynamics in the invariant plane $z = p_z = 0$ using the Poincar\\'e map as a basic tool and then we study the full 3 dimensional case using the SALI method as principal tool for distinguishing between order and chaos. We also present strong evidence obtained through the numerical simulations that our new bar model can realistically describe the formation and the evol...

  20. Unexpected Complication with the New C3 Excluder: Cause and Treatment

    SciTech Connect (OSTI)

    Katsargyris, Athanasios; Oikonomou, Kyriakos; Bracale, Umberto M.; Verhoeven, Eric L. G.

    2013-04-15

    The new C3 Gore Excluder delivery system enables both up/downward and rotational repositioning of the device before complete deployment. This contributes to more precise proximal landing and permits facilitation of the contralateral gate cannulation. During separate deployment, the position of the ipsilateral limb can also be readjusted. We have used the modified C3 delivery system in more than 50 patients, and in most cases, we were able to utilize the repositioning options of the device to achieve optimal fixation and sealing. However, we present a case where our attempt to readjust the position of the ipsilateral limb led to upward migration of the main body with coverage of the left renal artery origin. The latter was secured with a bare stent implantation.