Sample records for hydrometeor fall velocity

  1. ARM - Measurement - Hydrometeor fall velocity

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distribution ARM Datafall

  2. TOWARDS VERTICAL VELOCITY AND HYDROMETEOR CLASSIFICATION FROM ARM WIND PROFILERS

    E-Print Network [OSTI]

    - 98CH10886 with the U.S. Department of Energy. The publisher by accepting the manuscriptTOWARDS VERTICAL VELOCITY AND HYDROMETEOR CLASSIFICATION FROM ARM WIND PROFILERS Scott Giangrande Department/Atmospheric Sciences Division Brookhaven National Laboratory U.S. Department of Energy Office

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

    E-Print Network [OSTI]

    Protat, Alain

    The Accuracy of Radar Estimates of Ice Terminal Fall Speed from Vertically Pointing Doppler Radar and 2835 MHz) are used to characterize the terminal fall speed of hydrometeors and the vertical air motion air velocity in ice clouds is small on average, as is assumed in terminal fall speed retrieval methods

  4. Vertically Loaded Anchor: Drag Coefficient, Fall Velocity, and Penetration Depth using Laboratory Measurements

    E-Print Network [OSTI]

    Cenac, William

    2011-08-08T23:59:59.000Z

    /15 scale model was attached to a tow carriage and towed through a water-filled tank to measure the drag forces and evaluate the drag coefficient. The anchor terminal velocity was measured using underwater cameras to track the free fall of the model anchor...

  5. IDENTIFYING ICE HYDROMETEOR SIGNATURES ABOVE SUMMIT, GREENLAND USING A MULTI-INSTRUMENT APPROACH

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    IDENTIFYING ICE HYDROMETEOR SIGNATURES ABOVE SUMMIT, GREENLAND USING A MULTI. These retrievals, however, may be adversely affected by ice hydrometeors commonly observed in mixed phase clouds. Research on the effect of ice hydrometeors on the microwave signal is insufficient. We establish that ice

  6. Cloud water contents and hydrometeor sizes during the FIRE Arctic Clouds Experiment

    E-Print Network [OSTI]

    Shupe, Matthew

    of radiometers at an ice station frozen into the drifting ice pack of the Arctic Ocean. The NASA/FIRE Arctic- dependent water contents and hydrometeor sizes for all-ice and all-liquid clouds. For the spring and early summer period, all-ice cloud retrievals showed a mean particle diameter of about 60 m and ice water

  7. Squall-Line Intensification via Hydrometeor Recirculation ROBERT B. SEIGEL AND SUSAN C. VAN DEN HEEVER

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    -level latent heating above low-level latent cooling in upshear-tilted squall lines, driving a midlevel mesolowSquall-Line Intensification via Hydrometeor Recirculation ROBERT B. SEIGEL AND SUSAN C. VAN DEN microphysics and deep moist convec- tion, especially for squall lines via cold pool pathways. The present study

  8. Precipitation Hydrometeor Type Relative to the Mesoscale Airflow in Oceanic Deep Convection of the Madden-Julian Oscillation

    E-Print Network [OSTI]

    Houze Jr., Robert A.

    1 Precipitation Hydrometeor Type Relative to the Mesoscale Airflow in Oceanic Deep located relative to mesoscale air motions Heavy rain and riming occur downstream of mesoscale Abstract Composite analysis of near-equatorial oceanic mesoscale convective systems (MCSs

  9. A THREE-DIMENSIONAL MODELING STUDY OF THE EFFECTS OF SOLID-PHASE HYDROMETEOR-CHEMICAL INTERACTIONS IN CUMULONIMBUS CLOUDS ON TROPOSPHERIC CHEMICAL DISTRIBUTIONS

    E-Print Network [OSTI]

    Stuart, Amy L.

    - and mixed-phase hydrometeors (cloud ice, snow, graupel, and hail) are often excluded or limited due of interactions of ice-phase cloud hydrometeors with volatile chemicals have found that they may significantly. 2. ICE- AND MIXED-PHASE CHEMISTRY 2.1 Gas-Solid Transfer Gas-phase chemical species can diffuse

  10. Using Doppler spectra to separate hydrometeor populations and analyze ice precipitation in multilayered mixed-phase clouds

    SciTech Connect (OSTI)

    Rambukkange, Mahlon P.; Verlinde, J.; Eloranta, E. W.; Flynn, Connor J.; Clothiaux, Eugene E.

    2011-01-31T23:59:59.000Z

    Multimodality of cloud radar Doppler spectra is used to partition cloud particle phases and to separate distinct ice populations in the radar sample volume, thereby facilitating analysis of individual ice showers in multilayered mixed-phase clouds. A 35-GHz cloud radar located at Barrow, Alaska, during the Mixed-Phase Arctic Cloud Experiment collected the Doppler spectra. Data from a pair of collocated depolarization lidars confirmed the presence of two liquid cloud layers reported in this study. Surprisingly, both of these cloud layers were embedded in ice precipitation yet maintained their liquid. Our spectral separation of the ice precipitation yielded two distinct ice populations: ice initiated within the two liquid cloud layers and ice precipitation formed in higher cloud layers. Comparisons of ice fall velocity versus radar reflectivity relationships derived for distinct showers reveal that a single relationship might not properly represent the ice showers during this period.

  11. Fall Webworm

    E-Print Network [OSTI]

    Ree, Bill

    2004-10-08T23:59:59.000Z

    The fall webworm is a common pest of trees and shrubs. This insect produces unsightly webs, and repeated infestations can damage plants. Control methods are most successful when one understands the pest's life cycle. This publication suggests...

  12. ARM - Measurement - Hydrometeor Geometry

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particle

  13. ARM - Measurement - Hydrometeor image

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distribution ARM

  14. ARM - Measurement - Hydrometeor phase

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distribution ARMopticalphase

  15. ARM - Measurement - Hydrometeor size

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distribution

  16. ARM - Measurement - Hydrometeor types

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distributiontypes ARM Data

  17. GMTI radar minimum detectable velocity.

    SciTech Connect (OSTI)

    Richards, John Alfred

    2011-04-01T23:59:59.000Z

    Minimum detectable velocity (MDV) is a fundamental consideration for the design, implementation, and exploitation of ground moving-target indication (GMTI) radar imaging modes. All single-phase-center air-to-ground radars are characterized by an MDV, or a minimum radial velocity below which motion of a discrete nonstationary target is indistinguishable from the relative motion between the platform and the ground. Targets with radial velocities less than MDV are typically overwhelmed by endoclutter ground returns, and are thus not generally detectable. Targets with radial velocities greater than MDV typically produce distinct returns falling outside of the endoclutter ground returns, and are thus generally discernible using straightforward detection algorithms. This document provides a straightforward derivation of MDV for an air-to-ground single-phase-center GMTI radar operating in an arbitrary geometry.

  18. Fall 2013 945 277 Fall 2013 190 115 Fall 2012 957 150 Fall 2012 158 41

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    -122010-112009-102008-092007-082006-072005-062004-052003-04 Degrees Awarded Certificate/ Associate Bachelor Graduate 0% 10% 20% 30% 40% 50% 60% Fall 2013 Fall 2012

  19. AGU Fall Meeting 2014

    Broader source: Energy.gov [DOE]

    The American Geophysical Union's 47th Annual Fall Meeting will showcase groundbreaking research in the geosciences.

  20. BENCAP, LLC: CAPSULE VELOCITY TEST

    SciTech Connect (OSTI)

    Meidinger, Brian

    2005-09-07T23:59:59.000Z

    Ben Cap, LLC, has a technology that utilizes bebtonite to plug wells. The bentonite is encapsulated in a cardboard capsule, droped down to the bottom of the well where it is allowed to hydrate, causing the bentonite to expand and plug the well. This method of plugging a well is accepted in some, but not all states. This technology can save a significant amount of money when compared to cementing methods currently used to plug and abandon wells. The test objective was to obtain the terminal velocity of the capsule delivery system as it drops through a column of water in a wellbore. Once the terminal velocity is known, the bentonite swelling action can be timed not to begin swelling until it reaches the bottom of the well bore. The results of the test showed that an average speed of 8.93 plus or minus 0.12 ft/sec was achieved by the capsule as it was falling through a column of water. Plotting the data revealed a very linear function with the capsules achieving terminal velocity shortly after being released. The interference of the capsule impacting the casing was not readily apparent in any of the runs, but a siginal sampling anomaly was present in one run. Because the anomaly was so brief and not present in any of the other runs, no solid conclusions could be drawn. Additional testing would be required to determine the effects of capsules impacting a fluid level that is not at surface.

  1. ARM - Measurement - Hydrometeor Size Distribution

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distribution ARM Data

  2. ARM - Measurement - Hydrometeor optical properties

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadap Documentation TDMADAP : XDC documentationBarrow,ice particleSize Distribution ARMoptical

  3. Terminal Velocity Infall in QSO Absorption Line Halos

    E-Print Network [OSTI]

    Robert A. Benjamin

    1998-11-04T23:59:59.000Z

    We explore the hypothesis that clouds detected in quasar absorption line systems are falling at a terminal velocity toward the center of high redshift gaseous galactic halos. Since both the ionization level and terminal velocity of halo clouds increase with increasing distance from the central galaxy, velocity resolved profiles of highly ionized gas are predicted to have a greater width than low ionization gas. A line of sight passing through the center of gaseous halo (an idealized damped Ly alpha system), yields low ionization absorption at the velocity of the galaxy, flanked by high ionization on either side. Reasonable halo parameters yield total velocity extents for C IV of v_{C IV}=100-200 km/s, in agreement with several observed systems. The remaining systems may better described by the rotating disk model of Prochaska & Wolfe (1998). Finally, observational tests are suggested for verifying or falsifying the terminal velocity hypothesis for these systems.

  4. Botswanafeaturing the VICTORIA FALLS

    E-Print Network [OSTI]

    Weaver, Harold A. "Hal"

    .alumni.jhu.edu AUGUST 6-19, 2015 #12;Victoria Falls N A T U R A L B E A U T Y | B O U N T I F U L W I L D L I F E | R IBotswanafeaturing the OKAVANGO DELTA plus VICTORIA FALLS AHI: 800-323-7373 www'll begin our journey with a visit to powerful Victoria Falls in Zambia, where you will take a sunset cruise

  5. Falls Creek Hydroelectric Project

    SciTech Connect (OSTI)

    Gustavus Electric Company; Richard Levitt; DOE Project Officer - Keith Bennett

    2007-06-12T23:59:59.000Z

    This project was for planning and construction of a 700kW hydropower project on the Fall River near Gustavus, Alaska.

  6. A fully relativistic radial fall

    E-Print Network [OSTI]

    Alessandro D. A. M. Spallicci; Patxi Ritter

    2014-07-21T23:59:59.000Z

    Radial fall has historically played a momentous role. It is one of the most classical problems, the solutions of which represent the level of understanding of gravitation in a given epoch. A {\\it gedankenexperiment} in a modern frame is given by a small body, like a compact star or a solar mass black hole, captured by a supermassive black hole. The mass of the small body itself and the emission of gravitational radiation cause the departure from the geodesic path due to the back-action, that is the self-force. For radial fall, as any other non-adiabatic motion, the instantaneous identity of the radiated energy and the loss of orbital energy cannot be imposed and provide the perturbed trajectory. In the first part of this letter, we present the effects due to the self-force computed on the geodesic trajectory in the background field. Compared to the latter trajectory, in the Regge-Wheeler, harmonic and all others smoothly related gauges, a far observer concludes that the self-force pushes inward (not outward) the falling body, with a strength proportional to the mass of the small body for a given large mass; further, the same observer notes an higher value of the maximal coordinate velocity, this value being reached earlier on during infall. In the second part of this letter, we implement a self-consistent approach for which the trajectory is iteratively corrected by the self-force, this time computed on osculating geodesics. Finally, we compare the motion driven by the self-force without and with self-consistent orbital evolution. Subtle differences are noticeable, even if self-force effects have hardly the time to accumulate in such a short orbit.

  7. NWHA Fall Workshop & Tour

    Broader source: Energy.gov [DOE]

    This year’s Fall Regional Workshop on October 30 will focus on extending the longevity of our legacy hydropower projects through upgrades, refurbishment and life extensions, while meeting needs of...

  8. Velocity pump reaction turbine

    DOE Patents [OSTI]

    House, Palmer A. (Walnut Creek, CA)

    1982-01-01T23:59:59.000Z

    An expanding hydraulic/two-phase velocity pump reaction turbine including a dual concentric rotor configuration with an inter-rotor annular flow channel in which the inner rotor is mechanically driven by the outer rotor. In another embodiment, the inner rotor is immobilized and provided with gas recovery ports on its outer surface by means of which gas in solution may be recovered. This velocity pump reaction turbine configuration is capable of potential energy conversion efficiencies of up to 70%, and is particularly suited for geothermal applications.

  9. Velocity pump reaction turbine

    DOE Patents [OSTI]

    House, Palmer A. (Walnut Creek, CA)

    1984-01-01T23:59:59.000Z

    An expanding hydraulic/two-phase velocity pump reaction turbine including a dual concentric rotor configuration with an inter-rotor annular flow channel in which the inner rotor is mechanically driven by the outer rotor. In another embodiment, the inner rotor is immobilized and provided with gas recovery ports on its outer surface by means of which gas in solution may be recovered. This velocity pump reaction turbine configuration is capable of potential energy conversion efficiencies of up to 70%, and is particularly suited for geothermal applications.

  10. SGP and TWP (Manus) Ice Cloud Vertical Velocities

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kalesse, Heike

    Daily netcdf-files of ice-cloud dynamics observed at the ARM sites at SGP (Jan1997-Dec2010) and Manus (Jul1999-Dec2010). The files include variables at different time resolution (10s, 20min, 1hr). Profiles of radar reflectivity factor (dbz), Doppler velocity (vel) as well as retrieved vertical air motion (V_air) and reflectivity-weighted particle terminal fall velocity (V_ter) are given at 10s, 20min and 1hr resolution. Retrieved V_air and V_ter follow radar notation, so positive values indicate downward motion. Lower level clouds are removed, however a multi-layer flag is included.

  11. Dynamic slip velocity correlation using non-spherical particles

    E-Print Network [OSTI]

    Pecore, Douglas Wilkin

    1990-01-01T23:59:59.000Z

    GRAMS FIGURE 39: FREQUENCY DISTRIBUTION, STATIC, MUD WEIGHT RANGE: 0. 5 - 0. 6 GRAMS FIGURE 40: FREQUENCY DISTRIBUTION, STATIC, MUD WEIGHT RANGE: 0. 6 - 0. 7 GRAMS FIGURE 41: FREQUENCY DISTRIBUTION, STATIC, MUD WEIGHT RANGE: 0. 7 - 0, 8 GRAMS... of Advisory Committee: Dr. Hans C. Juvkam-Wold This research proposes a method for calculating the slip velocity of irregularly shaped particles falling in non-Newtonian fluids in a vertical flow conduit under static and dynamic flow conditions. A...

  12. 1 2 3 4 5 6 7 8 FALL SPRING FALL SPRING FALL SPRING FALL SPRING

    E-Print Network [OSTI]

    Stephens, Jacqueline

    four years to graduate. www.cm.lsu.edu (3) IEA Course Industry Emphasis Area (IEA) (see reverse Course offered in the Fall semester only IEA Courses (3) IEA Course (3) IEA Course (3) IEA Course Course is a Prerequisite to an IEA Course(s) Must make a "C" or better in the courseC C CC C C C C C CC C C C C CCC C CC

  13. The Sky is Falling

    E-Print Network [OSTI]

    Crawford, Amanda

    2005-01-01T23:59:59.000Z

    artificial ice crystals. Seeding takes place either below or above a cloud. In the first method, an aircraft's wings are mounted with flares burning silver iodide, which is then released beneath the cloud. The cloud's updraft carries the particles... enough to fall on their own. Silver iodide is a favored seeding agent because its crystalline composition is almost equal to the structure of ice crystals contained in convective clouds. Seeding with silver iodide can supply up to ten trillion...

  14. The radial-velocity revolution

    SciTech Connect (OSTI)

    Griffin, R. (Cambridge Univ., Observatories (England))

    1989-09-01T23:59:59.000Z

    Instruments and techniques designed for registering the minute Doppler shifts arising from stellar radial velocity are examined. Particular attention is given to the photographic spectrographs, the high-dispersion spectrographs ('digital speedometers'), and the Palomar spectrometer. The principle of using radial-velocity masks is described, and the use of interferometers for radial-velocity measurements is discussed. Results are presented of radial velocity observations for HD 114762, HD 210647, and Epsilon Tauri, together with interpretations of these results.

  15. alamos science fall: Topics by E-print Network

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

    Fall Term School and Major Department Fall 2007 Fall 2008 Fall 2009 Fall 2010 Fall 2011 Science 134 142 158 144 130 Electrical Engineering 110 118 131 127 126 Engineering...

  16. Unitaxial constant velocity microactuator

    DOE Patents [OSTI]

    McIntyre, T.J.

    1994-06-07T23:59:59.000Z

    A uniaxial drive system or microactuator capable of operating in an ultra-high vacuum environment is disclosed. The mechanism includes a flexible coupling having a bore therethrough, and two clamp/pusher assemblies mounted in axial ends of the coupling. The clamp/pusher assemblies are energized by voltage-operated piezoelectrics therewithin to operatively engage the shaft and coupling causing the shaft to move along its rotational axis through the bore. The microactuator is capable of repeatably positioning to sub-nanometer accuracy while affording a scan range in excess of 5 centimeters. Moreover, the microactuator generates smooth, constant velocity motion profiles while producing a drive thrust of greater than 10 pounds. The system is remotely controlled and piezoelectrically driven, hence minimal thermal loading, vibrational excitation, or outgassing is introduced to the operating environment. 10 figs.

  17. Unitaxial constant velocity microactuator

    DOE Patents [OSTI]

    McIntyre, Timothy J. (Knoxville, TN)

    1994-01-01T23:59:59.000Z

    A uniaxial drive system or microactuator capable of operating in an ultra-high vacuum environment. The mechanism includes a flexible coupling having a bore therethrough, and two clamp/pusher assemblies mounted in axial ends of the coupling. The clamp/pusher assemblies are energized by voltage-operated piezoelectrics therewithin to operatively engage the shaft and coupling causing the shaft to move along its rotational axis through the bore. The microactuator is capable of repeatably positioning to sub-manometer accuracy while affording a scan range in excess of 5 centimeters. Moreover, the microactuator generates smooth, constant velocity motion profiles while producing a drive thrust of greater than 10 pounds. The system is remotely controlled and piezoelectrically driven, hence minimal thermal loading, vibrational excitation, or outgassing is introduced to the operating environment.

  18. SAMPLE QUIZ 2 (Fall 2011)

    E-Print Network [OSTI]

    Quiz 2. MA/STAT 416 003. Fall 2011. Show detailed explanations. 1. Purdue plays against ... Compute the probability that the second marble taken is white. b.

  19. Fall Run | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederalFYRANDOMFailure Modes and Causes5Fall Run

  20. Determining the Terminal Velocity and the Particle Size of Epoxy Based Fluids in the Wellbore

    E-Print Network [OSTI]

    Turkmenoglu, Hasan

    2012-10-19T23:59:59.000Z

    permanently. This thesis mainly concentrates on the factors affecting the fall rates and how to correlate them in order to derive an applicable test that can be conducted on the field or lab to calculate the terminal velocity of the known epoxy composition...

  1. Albeni Falls Wildlife Mitigation Project

    E-Print Network [OSTI]

    from the Albeni Falls Hydroelectric Project #12;Biological Objective 1 Protect 900 acres of wetland hydroelectric project. · 1988 publication of the Final Report Albeni Falls Wildlife Protection, Mitigation effects on wildlife resulting from hydroelectric development. 2. Select target wildlife species

  2. 2006 Fall Meeting Search Results

    E-Print Network [OSTI]

    Zreda, Marek

    2006 Fall Meeting Search Results Cite abstracts as Author(s) (2006), Title, Eos Trans. AGU, 87 browsers. The iCronus project intends to create a publicly accessible website that contains published and weathering DE: 5475 Tectonics (8149) SC: Tectonophysics [T] MN: 2006 Fall Meeting #12;

  3. Velocity Dispersions Across Bulge Types

    SciTech Connect (OSTI)

    Fabricius, Maximilian; Bender, Ralf; Hopp, Ulrich [University Observatory of the Ludwig-Maximilians University (LMU) (Germany); Max-Planck Institute for Extraterrestrial Physics (MPE) (Germany); Saglia, Roberto; Drory, Niv [Max-Planck Institute for Extraterrestrial Physics (MPE) (Germany); Fisher, David [Department of Astronomy, University of Texas at Austin (United States)

    2010-06-08T23:59:59.000Z

    We present first results from a long-slit spectroscopic survey of bulge kinematics in local spiral galaxies. Our optical spectra were obtained at the Hobby-Eberly Telescope with the LRS spectrograph and have a velocity resolution of 45 km/s (sigma*), which allows us to resolve the velocity dispersions in the bulge regions of most objects in our sample. We find that the velocity dispersion profiles in morphological classical bulge galaxies are always centrally peaked while the velocity dispersion of morphologically disk-like bulges stays relatively flat towards the center--once strongly barred galaxies are discarded.

  4. Is there Lower Limit to Velocity or Velocity Change?

    E-Print Network [OSTI]

    B. N. Sreenath; Kenath Arun; C. Sivaram

    2013-06-19T23:59:59.000Z

    Here we explore the possibility of a lower limit to velocity or velocity change which is 20 orders of magnitude smaller than the speed of light and explore the various observable signatures including those in cosmic rays and gamma ray bursts.

  5. GALAXY CLUSTER BULK FLOWS AND COLLISION VELOCITIES IN QUMOND

    SciTech Connect (OSTI)

    Katz, Harley; McGaugh, Stacy; Teuben, Peter [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); Angus, G. W., E-mail: hkatz@astro.umd.edu, E-mail: stacy.mcgaugh@case.edu, E-mail: teuben@astro.umd.edu, E-mail: angus.gz@gmail.com [Astrophysics, Cosmology and Gravity Centre, University of Cape Town, Private Bag X3, Rondebosch 7700 (South Africa)

    2013-07-20T23:59:59.000Z

    We examine the formation of clusters of galaxies in numerical simulations of a QUMOND cosmogony with massive sterile neutrinos. Clusters formed in these exploratory simulations develop higher velocities than those found in {Lambda}CDM simulations. The bulk motions of clusters attain {approx}1000 km s{sup -1} by low redshift, comparable to observations whereas {Lambda}CDM simulated clusters tend to fall short. Similarly, high pairwise velocities are common in cluster-cluster collisions like the Bullet Cluster. There is also a propensity for the most massive clusters to be larger in QUMOND and to appear earlier than in {Lambda}CDM, potentially providing an explanation for ''pink elephants'' like El Gordo. However, it is not obvious that the cluster mass function can be recovered.

  6. altitude[m] glue 24.04.2011

    E-Print Network [OSTI]

    Barbosa, Henrique

    radiometer and a K-band hydrometeor profiler Bourayou R.1, Calheiros A.J.1, Sakuragi J.1, Miacci M.1, Barbosa:CAPES; CHUVA project FAPESP grant 2009/15235-8 Lidar Raymetrics LR101V-D200 Nd:YAG SH 532nm Pulse energy 130 m, the event is only recorded at high altitude. The fall velocity derived from lidar profiles is in fair

  7. September 17, 2010 SLIPS, TRIPS, FALLS PREVENTION

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    September 17, 2010 SLIPS, TRIPS, FALLS PREVENTION Slips, trips and falls at UCDHS account for 18 and in an effort to reduce slips, trips and falls we offer the following "best practices" to consider: Be aware on floors Use slip resistant shoes in icy conditions (Home Health visits) SLIP and FALL PREVENTION TEAM

  8. MA 15400 ONLINE Fall 2014 Syllabus

    E-Print Network [OSTI]

    Delworth, Timothy J

    2014-09-14T23:59:59.000Z

    MA 15400 ONLINE Fall 2014 Syllabus. TEXTBOOK. COURSE WEBSITE. RECORDED LESSONS. HOMEWORK. QUIZZES. EXAMS. CALCULATORS. OFFICE ...

  9. UAA Leadership Honors Fall 2014

    E-Print Network [OSTI]

    Pantaleone, Jim

    UAA Leadership Honors Fall 2014 Purpose UAA Leadership Honors are awarded to individuals upon graduation to recognize and honor their leadership. Leadership activities and involvement must promote individual and collective growth

  10. UAA Leadership Honors Fall 2013

    E-Print Network [OSTI]

    Pantaleone, Jim

    1 UAA Leadership Honors Fall 2013 Purpose UAA Leadership their leadership contributions to the University of Alaska Anchorage while maintaining academic excellence. Leadership activities and involvement must promote individual

  11. Cowlitz Falls Fish Passage.

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    The upper Cowlitz was once home to native salmon and steelhead. But the combined impacts of overharvest, farming, logging and road building hammered fish runs. And in the 1960s, a pair of hydroelectric dams blocked the migration path of ocean-returning and ocean-going fish. The lower Cowlitz still supports hatchery runs of chinook, coho and steelhead. But some 200 river miles in the upper river basin--much of it prime spawning and rearing habitat--have been virtually cut off from the ocean for over 26 years. Now the idea is to trap-and-haul salmon and steelhead both ways and bypass previously impassable obstacles in the path of anadromous fish. The plan can be summarized, for the sake of explanation, in three steps: (1) trap and haul adult fish--collect ocean-returning adult fish at the lowermost Cowlitz dam, and truck them upstream; (2) reseed--release the ripe adults above the uppermost dam, and let them spawn naturally, at the same time, supplement these runs with hatchery born fry that are reared and imprinted in ponds and net pens in the watershed; (3) trap and haul smolts--collection the new generation of young fish as they arrive at the uppermost Cowlitz dam, truck them past the three dams, and release them to continue their downstream migration to the sea. The critical part of any fish-collection system is the method of fish attraction. Scientists have to find the best combination of attraction system and screens that will guide young fish to the right spot, away from the turbine intakes. In the spring of 1994 a test was made of a prototype system of baffles and slots on the upriver face of the Cowlitz Falls Dam. The prototype worked at 90% efficiency in early tests, and it worked without the kind of expensive screening devices that have been installed on other dams. Now that the success of the attraction system has been verified, Harza engineers and consultants will design and build the appropriate collection part of the system.

  12. Velocity requirements for causality violation

    E-Print Network [OSTI]

    Giovanni Modanese

    2015-01-18T23:59:59.000Z

    We re-examine the "Regge-Tolman paradox" with reference to some recent experimental results. It is straightforward to find a formula for the velocity v of the moving system required to produce causality violation. This formula typically yields a velocity very close to the speed of light (for instance, v/c > 0.97 for X-shaped microwaves), which raises some doubts about the real physical observability of the violations. We then compute the velocity requirement introducing a delay between the reception of the primary signal and the emission of the secondary. It turns out that in principle for any delay it is possible to find moving observers able to produce active causal violation. This is mathematically due to the singularity of the Lorentz transformations for beta to 1. For a realistic delay due to the propagation of a luminal precursor, we find that causality violations in the reported experiments are still more unlikely (v/c > 0.989), and even in the hypothesis that the superluminal propagation velocity goes to infinity, the velocity requirement is bounded by v/c > 0.62. We also prove that if two macroscopic bodies exchange energy and momentum through superluminal signals, then the swap of signal source and target is incompatible with the Lorentz transformations; therefore it is not possible to distinguish between source and target, even with reference to a definite reference frame.

  13. Lessons Learned: Peer Exchange Calls Fall 2014 | Department of...

    Energy Savers [EERE]

    Calls Fall 2014 Lessons Learned: Peer Exchange Calls Fall 2014 Better Buildings Residential Network, Lessons Learned: Peer Exchange Calls Fall 2014. Lessons Learned: Peer...

  14. 3D Velocity from 3D Doppler Radial Velocity J. L. Barron,1

    E-Print Network [OSTI]

    Barron, John

    to compute local 3D velocity (local 3D optical flow). Radial velocity (measured by the Doppler effect3D Velocity from 3D Doppler Radial Velocity J. L. Barron,1 R. E. Mercer,1 X. Chen,1 P. Joe2 1 velocity data and qualitatively on real radial velocity data, obtained from the Doppler radar at Kurnell

  15. SHIP VELOCITY FIELDS , Lichuan Guib

    E-Print Network [OSTI]

    Gui, Lichuan

    directions. 1. Introduction Knowledge of flow around ships is important for design, model development, and computational fluid dynamics (CFD) validation. Historically, five-hole pitot probes have been used for measuring of multi-hole pitot and Laser-doppler systems, they both require measurement of ship velocity fields

  16. Velocity Distributions from Nonextensive Thermodynamics

    E-Print Network [OSTI]

    Eric I. Barnes; Liliya L. R. Williams; Arif Babul; Julianne J. Dalcanton

    2006-10-05T23:59:59.000Z

    There is no accepted mechanism that explains the equilibrium structures that form in collisionless cosmological N-body simulations. Recent work has identified nonextensive thermodynamics as an innovative approach to the problem. The distribution function that results from adopting this framework has the same form as for polytropes, but the polytropic index is now related to the degree of nonextensiveness. In particular, the nonextensive approach can mimic the equilibrium structure of dark matter density profiles found in simulations. We extend the investigation of this approach to the velocity structures expected from nonextensive thermodynamics. We find that the nonextensive and simulated N-body rms-velocity distributions do not match one another. The nonextensive rms-velocity profile is either monotonically decreasing or displays little radial variation, each of which disagrees with the rms-velocity distributions seen in simulations. We conclude that the currently discussed nonextensive models require further modifications in order to corroborate dark matter halo simulations. (adapted from TeX)

  17. CMPE 185 Fall 1999 Syllabus 1 Syllabus

    E-Print Network [OSTI]

    Karplus, Kevin

    CMPE 185 Fall 1999 Syllabus 1 Syllabus 1 Administrative details Location and timeKresge 327, MWF 2;2 Syllabus CMPE 185 Fall 1999 4 Special guest lecturers I may arrange

  18. CMPE 185 Fall 2000 Syllabus 1 Syllabus

    E-Print Network [OSTI]

    Karplus, Kevin

    CMPE 185 Fall 2000 Syllabus 1 Syllabus 1 Administrative details Location and timeKresge 327, MWF 2 Info 1 #12;2 Syllabus CMPE 185 Fall 2000 4

  19. almahata sitta fall: Topics by E-print Network

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

    Theory of Systems of First Order Linear Equations. 37 MGMT 585 2013 Fall1 2013 Fall Syllabus Mathematics Websites Summary: MGMT 585 2013 Fall1 2013 Fall Syllabus MGMT 585:...

  20. Fall 2013 Composite Data Products - Backup Power

    SciTech Connect (OSTI)

    Kurtz, J.; Sprik, S.; Ainscough, C.; Saur, G.; Post, M.; Peters, M.

    2013-12-01T23:59:59.000Z

    This report includes 28 composite data products (CDPs) produced in Fall 2013 for fuel cell backup power systems.

  1. Invite Paper Fall Technical Meeting

    E-Print Network [OSTI]

    Gomez, Alessandro

    within which it is sensible to make predictions, combustion is here to stay. In addition to oil1 Invite Paper Fall Technical Meeting of the Eastern States Section of the Combustion Institute: A Laboratory-Scale Benchmark for Turbulent Combustion Studies Alessandro Gomez Department of Mechanical

  2. Analysis of rock-fall and rock-fall avalanche seismograms in the French Alps

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the source rock slope (Figure 1), the falling mass strikes the talus slope and breaks up and/or bounces1 Analysis of rock-fall and rock-fall avalanche seismograms in the French Alps J. Deparis, D reviews seismograms from 10 rock-fall events recorded between 1992 and 2001 by the permanent seismological

  3. MA 161 & 161E EXAM 2 FALL 2000 1. lim 2 - 3s + 5s 4 - 5s = A ...

    E-Print Network [OSTI]

    1910-01-21T23:59:59.000Z

    MA 161 & 161E. EXAM 2. FALL 2000. 1. lim s??. 2 - 3s + 5s2. 4 - 5s3. = A. -?. B. -1. C. 0. D. 1. 2. E. 1. 2. If a ball is thrown upwards with a velocity of 52 ...

  4. Compact High-Velocity Clouds at High Resolution

    E-Print Network [OSTI]

    W. B. Burton; Robert Braun

    1999-12-22T23:59:59.000Z

    Six examples of the compact, isolated high-velocity clouds catalogued by Braun & Burton (1999) and identified with a dynamically cold ensemble of primitive objects falling towards the barycenter of the Local Group have been imaged with the Westerbork Synthesis Radio Telescope; an additional ten have been imaged with the Arecibo telescope. The imaging reveals a characteristic core/halo morphology: one or several cores of cool, relatively high-column-density material, are embedded in an extended halo of warmer, lower-density material. Several of the cores show kinematic gradients consistent with rotation; these CHVCs are evidently rotationally supported and dark-matter dominated. The imaging data allows several independent estimates of the distances to these objects, which lie in the range 0.3 to 1.0 Mpc. The CHVC properties resemble what might be expected from very dark dwarf irregular galaxies.

  5. Newberry EGS Seismic Velocity Model

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Templeton, Dennise

    We use ambient noise correlation (ANC) to create a detailed image of the subsurface seismic velocity at the Newberry EGS site down to 5 km. We collected continuous data for the 22 stations in the Newberry network, together with 12 additional stations from the nearby CC, UO and UW networks. The data were instrument corrected, whitened and converted to single bit traces before cross correlation according to the methodology in Benson (2007). There are 231 unique paths connecting the 22 stations of the Newberry network. The additional networks extended that to 402 unique paths crossing beneath the Newberry site.

  6. Newberry EGS Seismic Velocity Model

    SciTech Connect (OSTI)

    Templeton, Dennise

    2013-10-01T23:59:59.000Z

    We use ambient noise correlation (ANC) to create a detailed image of the subsurface seismic velocity at the Newberry EGS site down to 5 km. We collected continuous data for the 22 stations in the Newberry network, together with 12 additional stations from the nearby CC, UO and UW networks. The data were instrument corrected, whitened and converted to single bit traces before cross correlation according to the methodology in Benson (2007). There are 231 unique paths connecting the 22 stations of the Newberry network. The additional networks extended that to 402 unique paths crossing beneath the Newberry site.

  7. MEMS BASED DOPPLER VELOCITY MEASUREMENT SYSTEM

    E-Print Network [OSTI]

    White, Robert D.

    .2 Doppler Effect...................................................................................10 2MEMS BASED DOPPLER VELOCITY MEASUREMENT SYSTEM A dissertation submitted by Minchul Shin IN PARTIAL micromachined ultrasonic transducer (cMUT) based in-air Doppler velocity measurement system using a 1 cm2 planar

  8. IDENTIFYING ROOF FALL PREDICTORS USING FUZZY CLASSIFICATION

    SciTech Connect (OSTI)

    Bertoncini, C. A.; Hinders, M. K. [NDE Lab, College of William and Mary, Williamsburg, VA, 23187-8795 (United States)

    2010-02-22T23:59:59.000Z

    Microseismic monitoring involves placing geophones on the rock surfaces of a mine to record seismic activity. Classification of microseismic mine data can be used to predict seismic events in a mine to mitigate mining hazards, such as roof falls, where properly bolting and bracing the roof is often an insufficient method of preventing weak roofs from destabilizing. In this study, six months of recorded acoustic waveforms from microseismic monitoring in a Pennsylvania limestone mine were analyzed using classification techniques to predict roof falls. Fuzzy classification using features selected for computational ease was applied on the mine data. Both large roof fall events could be predicted using a Roof Fall Index (RFI) metric calculated from the results of the fuzzy classification. RFI was successfully used to resolve the two significant roof fall events and predicted both events by at least 15 hours before visual signs of the roof falls were evident.

  9. Idaho Falls Power- Residential Weatherization Loan Program

    Broader source: Energy.gov [DOE]

    Residential customers with permanently installed electric heat who receive service from the City of Idaho Falls, are eligible for 0% weatherization loans. City Energy Service will conduct an...

  10. STAT 490 Fall 2012 Test 2

    E-Print Network [OSTI]

    Owner

    2014-06-29T23:59:59.000Z

    STAT 490. Fall 2012. Test 2. October 30, 2012. 1. Datsenka Dog Insurance Company has developed the following mortality table for dogs: Age xl. Age xl. 0.

  11. Chemistry of Organic Electronic Materials 6483-Fall

    E-Print Network [OSTI]

    Sherrill, David

    Chemistry of Organic Electronic Materials 6483- Fall Tuesdays organic materials. The discussion will include aspects of synthesis General introduction to the electronic structure of organic materials with connection

  12. Course Announcement MATH 450 -Fall 2005

    E-Print Network [OSTI]

    Course Announcement MATH 450 - Fall 2005 Mathematical Modeling of the Physical World Time: TR 9://www.math.psu.edu/belmonte/math450 05.html #12;

  13. High-Temperature Falling-Particle Receiver

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

    | April 15, 2013 | Ho * This project employs modeling, design, testing, and optimization to further develop and improve key areas of falling particle receiver technology...

  14. High-Temperature Falling-Particle Receiver

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

    | June 15, 2013 | Ho * This project employs modeling, design, testing, and optimization to further develop and improve key areas of falling particle receiver technology...

  15. High-Temperature Falling-Particle Receiver

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

    temperatures, nitrate salt fluids become chemically unstable. In contrast, direct absorption receivers using solid particles that fall through a beam of concentrated solar...

  16. falls-city2.cdr

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7 AugustAFRICAN3uj:'I,\ W CTheuse of biotaFalls

  17. Tangential velocity measurement using interferometric MTI radar

    DOE Patents [OSTI]

    Doerry, Armin W.; Mileshosky, Brian P.; Bickel, Douglas L.

    2006-01-03T23:59:59.000Z

    Radar systems use time delay measurements between a transmitted signal and its echo to calculate range to a target. Ranges that change with time cause a Doppler offset in phase and frequency of the echo. Consequently, the closing velocity between target and radar can be measured by measuring the Doppler offset of the echo. The closing velocity is also known as radial velocity, or line-of-sight velocity. Doppler frequency is measured in a pulse-Doppler radar as a linear phase shift over a set of radar pulses during some Coherent Processing Interval (CPI). An Interferometric Moving Target Indicator (MTI) radar can be used to measure the tangential velocity component of a moving target. Multiple baselines, along with the conventional radial velocity measurement, allow estimating the true 3-D velocity of a target.

  18. Constraints on Neutrino Velocities Revisited

    E-Print Network [OSTI]

    Yunjie Huo; Tianjun Li; Yi Liao; Dimitri V. Nanopoulos; Yonghui Qi

    2012-01-27T23:59:59.000Z

    With a minimally modified dispersion relation for neutrinos, we reconsider the constraints on superluminal neutrino velocities from bremsstrahlung effects in the laboratory frame. Employing both the direct calculation approach and the virtual Z-boson approach, we obtain the generic decay width and energy loss rate of a superluminal neutrino with general energy. The Cohen-Glashow's analytical results for neutrinos with a relatively low energy are confirmed in both approaches. We employ the survival probability instead of the terminal energy to assess whether a neutrino with a given energy is observable or not in the OPERA experiment. Moreover, using our general results we perform systematical analyses on the constraints arising from the Super-Kamiokande and IceCube experiments.

  19. Seismic Velocity Estimation from Time Migration Velocities M. K. Cameron, S. B. Fomel, J. A. Sethian

    E-Print Network [OSTI]

    Sethian, James A.

    Seismic Velocity Estimation from Time Migration Velocities M. K. Cameron, S. B. Fomel, J. A the problem of estimating seismic velocities inside the earth which is necessary for obtaining seismic images in regular Cartesian coordinates. We derive a relation between the true seismic velocities and the routinely

  20. Wave VelocityWave Velocity Diff t f ti l l itDifferent from particle velocity

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    Wave VelocityWave Velocity v=/T =f Diff t f ti l l itDifferent from particle velocity Depends on the medium in which the wave travelsDepends on the medium in which the wave travels stringaonvelocity F v of Waves11-8. Types of Waves Transverse wave Longitudinal wave Liu UCD Phy1B 2014 37 #12;Sound Wave

  1. RiverFalls,Wisconsin SolarinSmall

    E-Print Network [OSTI]

    ), which services approximately 5,800 customers, the largest being UW-RF.ii Together, the utility are solar (most are biogas and wind), the program has helped to raise awareness and interest in renewable energy within the community.v Bringing Solar to River Falls The success of the River Falls Renewable

  2. Fall 2013 Edition Editor-in-Chief

    E-Print Network [OSTI]

    Lennard, William N.

    Musings of Brescia Fall 2013 Edition Editor-in-Chief Alicia Moore Editor Shelly Harder #12, rousing him from a nap. I held him up by one gangly, black arm. His marble brown eyes were shiny always occurred to me that TJ could fall apart at any moment. His arms were already feeling a bit loose

  3. Population Analysis, Fall 2005 1 Population Analyses

    E-Print Network [OSTI]

    Clark, William R.

    Population Analysis, Fall 2005 1 Population Analyses EEOB/AEcl 611 Fall Semester 2005 Scheduled Phone: 294-5176 email: wrclark@iastate.edu AEcl 611 is evolving in response to very rapid changes. The emphasis in AEcl 611 is on understanding the statistical basis of various analytical techniques, applying

  4. CURRICULUM VITAE Andrs Fall, Ph.D.

    E-Print Network [OSTI]

    Yang, Zong-Liang

    -0140 Cell: (512) 810-2335 Updated: May 20, 2014 Academic Background 2005-2008 Ph.D. Virginia Tech-poor to 4-excellent. #12;Dr. András Fall - Vitae 3 Selected Publications Peer reviewed journal articles in shale: a review. Accepted pending revisions, AAPG Bulletin. 7. Fall, A., Eichhubl, P., Bodnar, R

  5. Fall Lectures Feature Life of Einstein; Exploring Our World With...

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

    Fall Lectures Feature Life of Einstein; Exploring Our World With Particle Accelerators NEWPORT NEWS, Va., Sept. 22, 2010 - Jefferson Lab's first 2010 Fall Science Series lecture,...

  6. City of Klamath Falls District Heating District Heating Low Temperatur...

    Open Energy Info (EERE)

    Geothermal Facility Jump to: navigation, search Name City of Klamath Falls District Heating District Heating Low Temperature Geothermal Facility Facility City of Klamath Falls...

  7. FUPWG Fall 2009 Washington Update | Department of Energy

    Office of Environmental Management (EM)

    FUPWG Fall 2009 Washington Update FUPWG Fall 2009 Washington Update Presentation covers the 2009 Federal Utility Partnership Working Group (FUPWG) Washington update to the Lighting...

  8. High-resolution imaging of compact high-velocity clouds

    E-Print Network [OSTI]

    Robert Braun; Butler Burton

    1999-12-20T23:59:59.000Z

    Six examples of the compact, isolated high-velocity HI clouds (CHVCs) identified by Braun and Burton (1999) have been imaged with the WSRT. The 65 confirmed objects in this class define a dynamically cold system, with a global minimum for the velocity dispersion of only 70 km/s, found in the Local Group Standard of Rest, while in-falling at 100 km/s toward the LG barycenter. These objects have a characteristic morphology, in which several compact cores are embedded in a diffuse halo. The compact cores typically account for 40% of the HI line flux while covering some 15% of the source area. The cores are the cool condensed phase of HI, the CNM, with temp. near 100 K, while the halos appear to be a shielding column of warm diffuse HI, the WNM, with temp. near 8000 K. We detect a core with one of the narrowest HI emission lines ever observed, with intrinsic FWHM of 2 km/s and 75 K brightness. From a comparison of column and volume densities we derive a distance in the range 0.5 to 1 Mpc. We determine a metallicity for this same object of 0.04 to 0.07 solar. Comparably high distances are implied by demanding the stability of objects with multiple cores, which show relative velocities as large as 70 km/s on 30 arcmin scales. Many compact cores show systematic velocity gradients along the major axis of their elliptical extent which are consistent with circular rotation. Several of the derived rotation curves are well-fit by Navarro, Frenk, and White (1997) cold dark matter profiles. These kinematic signatures imply a high dark-to-visible mass ratio of 10-50, for D=0.7Mpc, which scales as 1/D. The implied dark matter halos dominate the mass volume density within the central 2 kpc (10 arcmin) of each source, providing a sufficent hydrostatic pressure to allow local CNM condensation. (abridged)

  9. Minimum and terminal velocities in projectile motion

    E-Print Network [OSTI]

    E. N. Miranda; S. Nikolskaya; R. Riba

    2012-08-13T23:59:59.000Z

    The motion of a projectile with horizontal initial velocity V0, moving under the action of the gravitational field and a drag force is studied analytically. As it is well known, the projectile reaches a terminal velocity Vterm. There is a curious result concerning the minimum speed Vmin; it turns out that the minimum velocity is lower than the terminal one if V0 > Vterm and is lower than the initial one if V0 < Vterm. These results show that the velocity is not a monotonous function. If the initial speed is not horizontal, there is an angle range where the velocity shows the same behavior mentioned previously. Out of that range, the volocity is a monotonous function. These results come out from numerical simulations.

  10. Seismo-ionospheric effects associated with 'Chelyabinsk' meteorite during the first 25 minutes after its fall

    E-Print Network [OSTI]

    Berngardt, Oleg I

    2014-01-01T23:59:59.000Z

    This paper presents the properties of ionospheric irregularities elongated with Earth magnetic field during the first 25 minutes after the fall of the meteorite 'Chelyabinsk' experimentally observed with EKB radar of Russian segment of the SuperDARN. It is shown that 40 minutes before meteor fall the EKB radar started to observe powerful scattering from irregularities elongated with the Earth magnetic field in the F-layer. Scattering was observed for 80 minutes and stopped 40 minutes after the meteorite fall. During 9-15 minutes after the meteorite fall at ranges 400-1200 km from the explosion site a changes were observed in the spectral and amplitude characteristics of the scattered signal. This features were the sharp increase in the Doppler frequency shift of the scattered signal corresponding to the Doppler velocities about 600 m/s and the sharp increase of the scattered signal amplitude. This allows us to conclude that we detected the growth of small-scale ionospheric irregularities elongated with the Ea...

  11. CNR GRADUATION SURVEY RESULTS Fall, 2001

    E-Print Network [OSTI]

    CNR GRADUATION SURVEY RESULTS Fall, 2001 Received 79 completed surveys out of 126 students who graduated in Dec, 2001 21 (27%) Have fulltime positions (9 temporary and 12 permanent) 3 (4

  12. DEAN'S LIST HONORABLE MENTION Fall Semester 2010

    E-Print Network [OSTI]

    Wong, Pak Kin

    DEAN'S LIST HONORABLE MENTION Fall Semester 2010 Brown, Bryant P. Brown, Dustin H. Campbell Laughlin, Amanda Diane Lemieux, Sydnie Lynn Lesnewski, Michael Phillip Lester, David Ernest Li, Crystal Gan

  13. Fall 2012 FUPWG Meeting Welcome: Southern Company

    Broader source: Energy.gov [DOE]

    Presentation—given at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meeting—covers the Southern Company's retail service territory, financials, customers and sales, power generation, U.S. military projects, and more.

  14. Cedar Falls Utilities- Residential New Construction Program

    Broader source: Energy.gov [DOE]

    Cedar Falls Utilities offers incentives to residential customers who construct new energy efficient homes. A rate discount of 25% is available to customers who meet the 5 Star Home Program criteria...

  15. Fall Back Daylight Savings time is November

    E-Print Network [OSTI]

    Linsley, Braddock K.

    Fall Back ­ Daylight Savings time is November 2nd.The Energy Policy Act of 2005 changed both the starting and ending dates. Beginning in 2007, daylight time starts on the second Sunday in March and ends

  16. STAT 416 Fall 2014 Homework 6 Solutions

    E-Print Network [OSTI]

    2014-11-03T23:59:59.000Z

    Nov 3, 2014 ... STAT 416 Fall 2014. Homework 6 Solutions ... 4.35 Let X denote the winnings. P (X = 1.1) = P (both marbles red) + P (both marbles blue) = 2. (5.

  17. River Falls Municipal Utilities- Distributed Solar Tariff

    Broader source: Energy.gov [DOE]

    River Falls Municipal Utilities (RFMU), a member of WPPI Energy, offers a special energy purchase rate to its customers that generate electricity using solar photovoltaic (PV) systems. The special...

  18. AMST Courses --Fall 2014 Tulsa Based Classes

    E-Print Network [OSTI]

    Veiga, Pedro Manuel Barbosa

    AMST Courses -- Fall 2014 Tulsa Based Classes: Globalization & Am Culture AMST 3253 Gray M 4 in trips to the Philbrook, Philbrook Downtown, and Gilcrease Museums and attend events of the Tulsa

  19. Utility Variable Generation Integration Group Fall Technical...

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

    15, 2014 9:00AM CDT to October 17, 2014 3:00PM CDT The Utility Variable Generation Integration Group (UVIG) Fall Technical Workshop in San Antonio, Texas will provide attendees...

  20. Math 373 Fall 2012 Test 2

    E-Print Network [OSTI]

    Owner

    2014-06-29T23:59:59.000Z

    Copyright Jeffrey A Beckley. Math 373. Fall 2012. Test 2. October 18, 2012. 1. Jordan has the option to purchase either of the two bonds below. Both bonds will

  1. Environmental Research Group 2014 Fall Seminar Series

    E-Print Network [OSTI]

    Environmental Research Group 2014 Fall Seminar Series October 24, 2014 Gregg 320, 12:00 ­ 1 of five hours, the city of Boston would have sustained even more damage from Hurricane Sandy than New York

  2. Cosmological Constraints from Galaxy Cluster Velocity Statistics

    E-Print Network [OSTI]

    Suman Bhattacharya; Arthur Kosowsky

    2007-04-20T23:59:59.000Z

    Future microwave sky surveys will have the sensitivity to detect the kinematic Sunyaev-Zeldovich signal from moving galaxy clusters, thus providing a direct measurement of their line-of-sight peculiar velocity. We show that cluster peculiar velocity statistics applied to foreseeable surveys will put significant constraints on fundamental cosmological parameters. We consider three statistical quantities that can be constructed from a cluster peculiar velocity catalog: the probability density function, the mean pairwise streaming velocity, and the pairwise velocity dispersion. These quantities are applied to an envisioned data set which measures line-of-sight cluster velocities with normal errors of 100 km/s for all clusters with masses larger than $10^{14}$ solar masses over a sky area of up to 5000 square degrees. A simple Fisher matrix analysis of this survey shows that the normalization of the matter power spectrum and the dark energy equation of state can be constrained to better than 10 percent, and the Hubble constant and the primordial power spectrum index can be constrained to a few percent, independent of any other cosmological observations. We also find that the current constraint on the power spectrum normalization can be improved by more than a factor of two using data from a 400 square degree survey and WMAP third-year priors. We also show how the constraints on cosmological parameters changes if cluster velocities are measured with normal errors of 300 km/s.

  3. Quantifying Temperature Effects on Fall Chinook Salmon

    SciTech Connect (OSTI)

    Jager, Yetta [ORNL

    2011-11-01T23:59:59.000Z

    The motivation for this study was to recommend relationships for use in a model of San Joaquin fall Chinook salmon. This report reviews literature pertaining to relationships between water temperature and fall Chinook salmon. The report is organized into three sections that deal with temperature effects on development and timing of freshwater life stages, temperature effects on incubation survival for eggs and alevin, and temperature effects on juvenile survival. Recommendations are made for modeling temperature influences for all three life stages.

  4. Theoretical investigation of the collection of aerosol particles by falling ice crystals

    SciTech Connect (OSTI)

    Miller, N.L.

    1987-01-01T23:59:59.000Z

    A numerical scheme that determines the collection efficiencies, kernels, and washout rates of aerosol particles (APs) by falling columnar and plate-like ice crystals is presented. A theoretical model for the removal of micron-size APs by falling columnar ice crystals which incorporates gravitational, inertial, thermophoretic, diffusiophoretic and electrostatic forcing has been formulated. This trajectory model which includes computed velocity, temperature and water vapor density fields, was coupled to a flux model which determines the removal of submicron particles due to Brownian diffusion, thermo and diffusio-phoresis as well as electrostatic forcing. This combined model indicates collection efficiencies for APs of radii 0.001 to 10.0 ..mu..m for the columnar ice crystal size distribution. An earlier study provides AP collection efficiencies by ice crystal plates for the ice crystal plate size distribution. The columnar ice crystal-AP collection model indicates that efficiency increases with increasing pressure, temperature or electrostatic charge for decreasing relative humidity.

  5. Retrofit Savings Determination for Wichita Falls Independent School District

    E-Print Network [OSTI]

    Shao, X.; Baltazar-Cervantes, J. C.; Claridge, D. E.

    2001-01-01T23:59:59.000Z

    Laboratory Wichita Falls ISD Texas A&M University Carrigan Center Energy Systems Laboratory Texas Engineering Experiment station Wichita Falls ISD Texas A&M University College Station. TX Carrigan Center Energy Systems Laboratory Wichita Falls ISO Texas A...&M University Denver Center Energy Systems Laboratory Texas Engineering Experiment Station Wichita Falls ISD Texas A&M University College station. TX Denver Center Energy Systems Laboratory Wichita Falls ISO Texas A&M University Fannin Elementary Energy Systems...

  6. A confirmed location in the Galactic halo for the high-velocity cloud 'chain A'

    E-Print Network [OSTI]

    Hugo van Woerden; Ulrich J. Schwarz; Reynier F. Peletier; Bart P. Wakker; Peter M. W. Kalberla

    1999-07-08T23:59:59.000Z

    The high-velocity clouds of atomic hydrogen, discovered about 35 years ago, have velocities inconsistent with simple Galactic rotation models that generally fit the stars and gas in the Milky Way disk. Their origins and role in Galactic evolution remain poorly understood, largely for lack of information on their distances. The high-velocity clouds might result from gas blown from the Milky Way disk into the halo by supernovae, in which case they would enrich the Galaxy with heavy elements as they fall back onto the disk. Alternatively, they may consist of metal-poor gas -- remnants of the era of galaxy formation, accreted by the Galaxy and reducing its metal abundance. Or they might be truly extragalactic objects in the Local Group of galaxies. Here we report a firm distance bracket for a large high-velocity cloud, Chain A, which places it in the Milky Way halo (2.5 to 7 kiloparsecs above the Galactic plane), rather than at an extragalactic distance, and constrains its gas mass to between 10^5 and 2 times 10^6 solar masses.

  7. A confirmed location in the Galactic halo for the high-velocity cloud "chain A"

    E-Print Network [OSTI]

    Van Woerden, H; Peletier, R F; Wakker, B P; Kalberla, P M W; Woerden, Hugo van; Schwarz, Ulrich J.; Peletier, Reynier F.; Wakker, Bart P.; Kalberla, Peter M.W.

    1999-01-01T23:59:59.000Z

    The high-velocity clouds of atomic hydrogen, discovered about 35 years ago, have velocities inconsistent with simple Galactic rotation models that generally fit the stars and gas in the Milky Way disk. Their origins and role in Galactic evolution remain poorly understood, largely for lack of information on their distances. The high-velocity clouds might result from gas blown from the Milky Way disk into the halo by supernovae, in which case they would enrich the Galaxy with heavy elements as they fall back onto the disk. Alternatively, they may consist of metal-poor gas -- remnants of the era of galaxy formation, accreted by the Galaxy and reducing its metal abundance. Or they might be truly extragalactic objects in the Local Group of galaxies. Here we report a firm distance bracket for a large high-velocity cloud, Chain A, which places it in the Milky Way halo (2.5 to 7 kiloparsecs above the Galactic plane), rather than at an extragalactic distance, and constrains its gas mass to between 10^5 and 2 times 10^...

  8. Modeling velocity dispersion In Gypsy site, Oklahoma

    E-Print Network [OSTI]

    Alsaadan, Sami Ibrahim

    2010-01-01T23:59:59.000Z

    Discrepancies in interval velocities estimated from vertical well measurements made with different source central frequencies at Gypsy site could be primarily explained in terms of intrinsic attenuation. Four intervals ...

  9. Acoustic measurement of potato cannon velocity

    E-Print Network [OSTI]

    Courtney, M; Courtney, Amy; Courtney, Michael

    2006-01-01T23:59:59.000Z

    This article describes measurement of potato cannon velocity with a digitized microphone signal. A microphone is attached to the potato cannon muzzle and a potato is fired at an aluminum target about 10 m away. The potato's flight time can be determined from the acoustic waveform by subtracting the time in the barrel and time for sound to return from the target. The potato velocity is simply the flight distance divided by the flight time.

  10. China's forest products trade falls nearly 18% China's forest products trade falls nearly 18%

    E-Print Network [OSTI]

    China's forest products trade falls nearly 18% China's forest products trade falls nearly 18% 11/08/2009 - 09:05 According to China's latest Customs statistics, foreign trade of China's forest products in the first five months showed a year-on-year general downturn. The total value of foreign trade of China

  11. Classes Entering Fall 2009 and Fall 2010 Last Name: First Name: Middle Ini2al

    E-Print Network [OSTI]

    Afshari, Ehsan

    Classes Entering Fall 2009 and Fall 2010 Last Name: First Name: Middle Ini2 ini2als for agreement: Date: From the courses listed in the tables above, iden2fy Wri2ng Advisor Approved Ini2als: Date: Probability & Sta2s2cs Final ECE Approval: Advanced

  12. Interior cavern conditions and salt fall potential

    SciTech Connect (OSTI)

    Munson, D.E.; Molecke, M.A. [Sandia National Labs., Albuquerque, NM (United States); Myers, R.E. [Strategic Petroleum Reserve, New Orleans, LA (United States)

    1998-03-01T23:59:59.000Z

    A relatively large number of salt caverns are used for fluid hydrocarbon storage, including an extensive set of facilities in the Gulf Coast salt domes for the Strategic Petroleum Reserve (SPR) Program. Attention is focused on the SPR caverns because of available histories that detail events involving loss and damage of the hanging string casing. The total number of events is limited, making the database statistically sparse. The occurrence of the events is not evenly distributed, with some facilities, and some caverns, more susceptible than others. While not all of these events could be attributed to impacts from salt falls, many did show the evidence of such impacts. As a result, a study has been completed to analyze the potential for salt falls in the SPR storage caverns. In this process, it was also possible to deduce some of the cavern interior conditions. Storage caverns are very large systems in which many factors could possibly play a part in casing damage. In this study, all of the potentially important factors such as salt dome geology, operational details, and material characteristics were considered, with all being logically evaluated and most being determined as secondary in nature. As a result of the study, it appears that a principal factor in determining a propensity for casing damage from salt falls is the creep and fracture characteristics of salt in individual caverns. In addition the fracture depends strongly upon the concentration of impurity particles in the salt. Although direct observation of cavern conditions is not possible, the average impurity concentration and the accumulation of salt fall material can be determined. When this is done, there is a reasonable correlation between the propensity for a cavern to show casing damage events and accumulation of salt fall material. The accumulation volumes of salt fall material can be extremely large, indicating that only a few of the salt falls are large enough to cause impact damage.

  13. Extracting Fish and Water Velocity from Doppler Profiler Data

    E-Print Network [OSTI]

    deYoung, Brad

    Extracting Fish and Water Velocity from Doppler Profiler Data ĺ Ð 1 ¸ Ö Ò ×¹ Ò ÝÖ¹Ê Ò 2 1 processing algo- rithms normally used to extract water velocity. We present an alternative method for velocity homogeneity precludes the extraction of fish velocities. Water velocities can sometimes still

  14. WIYN open cluster study. LIX. Radial velocity membership of the evolved population of the old open cluster NGC 6791

    SciTech Connect (OSTI)

    Tofflemire, Benjamin M.; Gosnell, Natalie M.; Mathieu, Robert D. [Department of Astronomy, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI 53706 (United States); Platais, Imants, E-mail: tofflemi@astro.wisc.edu, E-mail: imants@pha.jhu.edu [Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218 (United States)

    2014-10-01T23:59:59.000Z

    The open cluster NGC 6791 has been the focus of much recent study due to its intriguing combination of old age and high metallicity (?8 Gyr, [Fe/H] = +0.30), as well as its location within the Kepler field. As part of the WIYN Open Cluster Study, we present precise (? = 0.38 km s{sup –1}) radial velocities for proper motion candidate members of NGC 6791 from Platais et al. Our survey, extending down to g' ? 16.8, is comprised of the evolved cluster population, including blue stragglers, giants, and horizontal branch stars. Of the 280 proper-motion-selected stars above our magnitude limit, 93% have at least one radial velocity measurement and 79% have three measurements over the course of at least 200 days, sufficient for secure radial-velocity-determined membership of non-velocity-variable stars. The Platais et al. proper motion catalog includes 12 anomalous horizontal branch candidates blueward of the red clump, of which we find only 4 to be cluster members. Three fall slightly blueward of the red clump and the fourth is consistent with being a blue straggler. The cleaned color-magnitude diagram shows a richly populated red giant branch and a blue straggler population. Half of the blue stragglers are in binaries. From our radial velocity measurement distribution, we find the cluster's radial velocity dispersion to be ? {sub c} = 0.62 ± 0.10 km s{sup –1}. This corresponds to a dynamical mass of ?4600 M {sub ?}.

  15. Atmospheric Mercury near Salmon Falls Creek Reservoir in Southern Idaho

    SciTech Connect (OSTI)

    Michael L. Abbott; Jeffrey J. Einerson

    2007-12-01T23:59:59.000Z

    Gaseous elemental mercury (GEM) and reactive gaseous mercury (RGM) were measured over two-week seasonal field campaigns near Salmon Falls Creek Reservoir in south-central Idaho from the summer of 2005 through the fall of 2006 and over the entire summer of 2006 using automated Tekran mercury analyzers. GEM, RGM, and particulate mercury (HgP) were also measured at a secondary site 90 km to the west in southwestern Idaho during the summer of 2006. The study was performed to characterize mercury air concentrations in the southern Idaho area for the first time, estimate mercury dry deposition rates, and investigate the source of observed elevated concentrations. High seasonal variability was observed with the highest GEM (1.91 ± 0.9 ng m-3) and RGM (8.1 ± 5.6 pg m-3) concentrations occurring in the summer and lower values in the winter (1.32 ± 0.3 ng m-3, 3.2 ± 2.9 pg m-3 for GEM, RGM respectively). The summer-average HgP concentrations were generally below detection limit (0.6 ± 1 pg m-3). Seasonally-averaged deposition velocities calculated using a resistance model were 0.034 ± 0.032, 0.043 ± 0.040, 0.00084 ± 0.0017 and 0.00036 ± 0.0011 cm s-1 for GEM (spring, summer, fall, and winter, respectively) and 0.50 ± 0.39, 0.40 ± 0.31, 0.51 ± 0.43 and 0.76 ± 0.57 cm s-1 for RGM. The total annual RGM + GEM dry deposition estimate was calculated to be 11.9 ± 3.3 µg m-2, or about 2/3 of the total (wet + dry) deposition estimate for the area. Periodic elevated short-term GEM (2.2 – 12 ng m-3) and RGM (50 - 150 pg m-3) events were observed primarily during the warm seasons. Back-trajectory modeling and PSCF analysis indicated predominant source directions from the southeast (western Utah, northeastern Nevada) through the southwest (north-central Nevada) with fewer inputs from the northwest (southeastern Oregon and southwestern Idaho).

  16. Electronic Out-fall Inspection Application - 12007

    SciTech Connect (OSTI)

    Weymouth, A Kent III; Pham, Minh; Messick, Chuck [Savannah River Nuclear Solutions, Aiken, South Carolina 29808 (United States)

    2012-07-01T23:59:59.000Z

    In early 2009 an exciting opportunity was presented to the Geographic Information Systems (GIS) team at the Savannah River Site (SRS). The SRS maintenance group was directed to maintain all Out-falls on Site, increasing their workload from 75 to 183 out-falls with no additional resources. The existing out-fall inspection system consisted of inspections performed manually and documented via paper trail. The inspections were closed out upon completion of activities and placed in file cabinets with no central location for tracking/trending maintenance activities. A platform for meeting new improvements required for documentation by the Department of Health and Environmental Control (DHEC) out-fall permits was needed to replace this current system that had been in place since the 1980's. This was accomplished by building a geographically aware electronic application that improved reliability of site out-fall maintenance and ensured consistent standards were maintained for environmental excellence and worker efficiency. Inspections are now performed via tablet and uploaded to a central point. Work orders are completed and closed either in the field using tablets (mobile application) or in their offices (via web portal) using PCs. And finally completed work orders are now stored in a central database allowing trending of maintenance activities. (authors)

  17. Velocity dependence of friction of confined polymers

    E-Print Network [OSTI]

    I. M. Sivebaek; V. N. Samoilov; B. N. J. Persson

    2009-11-18T23:59:59.000Z

    We present molecular dynamics friction calculations for confined hydrocarbon solids with molecular lengths from 20 to 1400 carbon atoms. Two cases are considered: (a) polymer sliding against a hard substrate, and (b) polymer sliding on polymer. We discuss the velocity dependence of the frictional shear stress for both cases. In our simulations, the polymer films are very thin (approx. 3 nm), and the solid walls are connected to a thermostat at a short distance from the polymer slab. Under these circumstances we find that frictional heating effects are not important, and the effective temperature in the polymer film is always close to the thermostat temperature. In the first setup (a), for hydrocarbons with molecular lengths from 60 to 1400 carbon atoms, the shear stresses are nearly independent of molecular length, but for the shortest hydrocarbon C20H42 the frictional shear stress is lower. In all cases the frictional shear stress increases monotonically with the sliding velocity. For polymer sliding on polymer [case (b)] the friction is much larger, and the velocity dependence is more complex. For hydrocarbons with molecular lengths from 60 to 140 C-atoms, the number of monolayers of lubricant increases (abruptly) with increasing sliding velocity (from 6 to 7 layers), leading to a decrease of the friction. Before and after the layering transition, the frictional shear stresses are nearly proportional to the logarithm of sliding velocity. For the longest hydrocarbon (1400 C-atoms) the friction shows no dependence on the sliding velocity, and for the shortest hydrocarbon (20 C-atoms) the frictional shear stress increases nearly linearly with the sliding velocity.

  18. You have remarkable ideas. share them at the Falling Walls lab!

    E-Print Network [OSTI]

    Heermann, Dieter W.

    of the falling wallS lab + conference berlin 8/9 nov 2012 aPPlYnoW!www.falling-walls.com/lab THE FALLING WALLS

  19. Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, and Mechanics

    E-Print Network [OSTI]

    Zimmer, Valerie Louise

    2011-01-01T23:59:59.000Z

    systems  and  rock  fall  source  and  impact  areas,  it  meters  from  a  rock  fall  source  area.   The   success  possible  to  the  rock  fall  source  areas,   spacing  

  20. Effects of Hydroelectric Dam Operations on the Restoration Potential of Snake River Fall Chinook Salmon (Oncorhynchus tshawytscha) Spawning Habitat Final Report, October 2005 - September 2007.

    SciTech Connect (OSTI)

    Hanrahan, Timothy P.; Richmond, Marshall C.; Arntzen, Evan V. [Pacific Northwest National Laboratory

    2007-11-13T23:59:59.000Z

    This report describes research conducted by the Pacific Northwest National Laboratory for the Bonneville Power Administration (BPA) as part of the Fish and Wildlife Program directed by the Northwest Power and Conservation Council. The study evaluated the restoration potential of Snake River fall Chinook salmon spawning habitat within the impounded lower Snake River. The objective of the research was to determine if hydroelectric dam operations could be modified, within existing system constraints (e.g., minimum to normal pool levels; without partial removal of a dam structure), to increase the amount of available fall Chinook salmon spawning habitat in the lower Snake River. Empirical and modeled physical habitat data were used to compare potential fall Chinook salmon spawning habitat in the Snake River, under current and modified dam operations, with the analogous physical characteristics of an existing fall Chinook salmon spawning area in the Columbia River. The two Snake River study areas included the Ice Harbor Dam tailrace downstream to the Highway 12 bridge and the Lower Granite Dam tailrace downstream approximately 12 river kilometers. These areas represent tailwater habitat (i.e., riverine segments extending from a dam downstream to the backwater influence from the next dam downstream). We used a reference site, indicative of current fall Chinook salmon spawning areas in tailwater habitat, against which to compare the physical characteristics of each study site. The reference site for tailwater habitats was the section extending downstream from the Wanapum Dam tailrace on the Columbia River. Fall Chinook salmon spawning habitat use data, including water depth, velocity, substrate size and channelbed slope, from the Wanapum reference area were used to define spawning habitat suitability based on these variables. Fall Chinook salmon spawning habitat suitability of the Snake River study areas was estimated by applying the Wanapum reference reach habitat suitability criteria to measured and modeled habitat data from the Snake River study areas. Channel morphology data from the Wanapum reference reach and the Snake River study areas were evaluated to identify geomorphically suitable fall Chinook salmon spawning habitat. The results of this study indicate that a majority of the Ice Harbor and Lower Granite study areas contain suitable fall Chinook salmon spawning habitat under existing hydrosystem operations. However, a large majority of the currently available fall Chinook salmon spawning habitat in the Ice Harbor and Lower Granite study areas is of low quality. The potential for increasing, through modifications to hydrosystem operations (i.e., minimum pool elevation of the next downstream dam), the quantity or quality of fall Chinook salmon spawning habitat appears to be limited. Estimates of the amount of potential fall Chinook salmon spawning habitat in the Ice Harbor study area decreased as the McNary Dam forebay elevation was lowered from normal to minimum pool elevation. Estimates of the amount of potential fall Chinook salmon spawning habitat in the Lower Granite study area increased as the Little Goose Dam forebay elevation was lowered from normal to minimum pool elevation; however, 97% of the available habitat was categorized within the range of lowest quality. In both the Ice Harbor and Lower Granite study areas, water velocity appears to be more of a limiting factor than water depth for fall Chinook salmon spawning habitat, with both study areas dominated by low-magnitude water velocity. The geomorphic suitability of both study areas appears to be compromised for fall Chinook salmon spawning habitat, with the Ice Harbor study area lacking significant bedforms along the longitudinal thalweg profile and the Lower Granite study area lacking cross-sectional topographic diversity. To increase the quantity of available fall Chinook salmon spawning habitat in the Ice Harbor and Lower Granite study area, modifications to hydroelectric dam operations beyond those evaluated in this study likely would be necessary. M

  1. AME 101 Fall 2013 Problem Set #2

    E-Print Network [OSTI]

    points) (from a previous midterm) I calculated the power production from a new type of steam turbine, Pin and Uin are the temperature, pressure and velocity of the steam going into the turbine, Tout, Pout and Uout are the temperature, pressure and velocity of the steam leaving the turbine, CP is the heat

  2. air velocity effects: Topics by E-print Network

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

    transfer velocities. A moving tropical cyclone is an intense source of surface wind stress Chu, Peter C. 4 The exit velocity of a compressed air cannon CERN Preprints...

  3. On the definition of velocity in doubly special relativity theories

    E-Print Network [OSTI]

    Piotr Kosinski; Pawel Maslanka

    2002-11-13T23:59:59.000Z

    We discuss the definition of particle velocity in doubly relativity theories. The general formula relating velocity and four-momentum of particle is given.

  4. ARM - Field Campaign - Fall 2002 SCM IOP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8LigovCampaignsCLEX-5govCampaignsFall 1997 Cloud IOPgovCampaignsFall

  5. High-velocity clouds: a diverse phenomenon

    E-Print Network [OSTI]

    B. P. Wakker

    2001-09-13T23:59:59.000Z

    In this contribution the current state of knowledge about the high-velocity clouds (HVCs) is summarized. Recent progress has shown that the HVCs are a diverse phenomenon. The intermediate-velocity clouds (IVCs) are likely to be part of a Galactic Fountain. The Magellanic Stream is a tidal remnant. HVC complex C (possibly complexes A and GCN) are low-metallicity clouds near the Galaxy; they could be remnants of the formation of the Galaxy or old tidal streams extracted from nearby dwarf galaxies. Having a substantial number of HI HVCs dispersed throughout the Local Group seems incompatible with the observed HI mass function of galaxies. Finally, FUSE finds high-velocity OVI, some of which is clearly associated with HI HVCs, but some which is not.

  6. Antarctica: measuring glacier velocity from satellite images

    SciTech Connect (OSTI)

    Lucchitta, B.K.; Ferguson, H.M.

    1986-11-28T23:59:59.000Z

    Many Landsat images of Antarctica show distinctive flow and crevasse features in the floating part of ice streams and outlet glaciers immediately below their grounding zones. Some of the features, which move with the glacier or ice stream, remain visible over many years and thus allow time-lapse measurements of ice velocities. Measurements taken from Landsat images of features on Byrd Glacier agree well with detailed ground and aerial observations. The satellite-image technique thus offers a rapid and cost-effective method of obtaining average velocities, to a first order of accuracy, of many ice streams and outlet glaciers near their termini.

  7. Lagrangian reconstruction of cosmic velocity fields

    E-Print Network [OSTI]

    G. Lavaux

    2008-01-28T23:59:59.000Z

    We discuss a Lagrangian reconstruction method of the velocity field from galaxy redshift catalog that takes its root in the Euler equation. This results in a ``functional'' of the velocity field which must be minimized. This is helped by an algorithm solving the minimization of cost-flow problems. The results obtained by applying this method to cosmological problems are shown and boundary effects happening in real observational cases are then discussed. Finally, a statistical model of the errors made by the reconstruction method is proposed.

  8. Clocking the Rise and Fall of Core-Collapse Supernovae

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

    The Rise and Fall of Core-Collapse Supernovae The Rise and Fall of Core-Collapse Supernovae 2D and 3D Models Shed New Light on What Fuels an Exploding Star July 2, 2015 | Tags:...

  9. advanced falling film: Topics by E-print Network

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

    Grade Lathrop, Daniel P. 29 Advanced Virology MCBI 7460 Fall 2013 Tuesdays from 2 to 5 pm Engineering Websites Summary: Advanced Virology MCBI 7460 Fall 2013 Tuesdays from 2 to 5...

  10. ME 119 a Prof. A. Minnich Fall 2011 Syllabus

    E-Print Network [OSTI]

    ME 119 a Prof. A. Minnich Fall 2011 Syllabus ME 119a - Heat Transfer: Conduction and Radiation community and perpetuating the Honor System." #12;ME 119 a Prof. A. Minnich Fall 2011 Syllabus Schedule

  11. CMPE 185 Fall 1999 Syllabus 1 1 Administrative details

    E-Print Network [OSTI]

    Karplus, Kevin

    CMPE 185 Fall 1999 Syllabus 1 Syllabus 1 Administrative details Location and time Kresge 327, MWF 2 Syllabus CMPE 185 Fall 1999 4 Special guest lecturers I may arrange to have some guest lectures

  12. CMPE 185 Fall 2000 Syllabus 1 1 Administrative details

    E-Print Network [OSTI]

    Karplus, Kevin

    CMPE 185 Fall 2000 Syllabus 1 Syllabus 1 Administrative details Location and time Kresge 327, MWF 2, and need to do the grading mostly on Dec 2. Karplus Info 1 #12; 2 Syllabus CMPE 185 Fall 2000 4 Special

  13. Global Studies Course List Fall 2010 (2111) COURSE LIST

    E-Print Network [OSTI]

    Jiang, Huiqiang

    2111-01-01T23:59:59.000Z

    ...........................................................................5 2. Global Economy and Global Governance .................................................9 3 from one of six Global Concentrations (Sustainable Development; Global Economy and Global GovernanceGlobal Studies Course List ­ Fall 2010 (2111) Page 1 COURSE LIST Fall 2010 (2111) Global Studies

  14. arts fall training: Topics by E-print Network

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

    21 22 23 24 25 Next Page Last Page Topic Index 1 BA: Art History Fall--First Year Environmental Sciences and Ecology Websites Summary: BA: Art History Fall--First Year ART...

  15. Green Lands Blue Water 2014 Fall Conference | Department of Energy

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

    Green Lands Blue Water 2014 Fall Conference Green Lands Blue Water 2014 Fall Conference November 18, 2014 10:00AM CST to November 20, 2014 4:00PM CST Richland Community College...

  16. Highlights of the Fall 2013 Implementation Guidelines for

    E-Print Network [OSTI]

    Su, Xiao

    Highlights of the Fall 2013 Implementation Guidelines for Presidential Directive 2009-05 Maureen not permit financial aid for classes not required for the degree.) #12;THANKYOU!!! Fall 2013 Implementation

  17. HKUST Programming Contest 2006 Fall Page 1 of 7

    E-Print Network [OSTI]

    Wu, Dekai

    Programming Contest 2006 Fall Page 4 of 7 Problem C ­ Marble Arrangement Given the number of marbles of threeHKUST Programming Contest 2006 Fall Page 1 of 7 HKUST Programming Contest 2006 Fall Sponsored Programming Contest 2006 Fall Page 2 of 7 Problem A ­ Infinite Path (0,0) (0,1) (0,2) (0,3) (0,4) (0,5) (1

  18. FINANCE DEPARTMENT Office Hours Fall 2014

    E-Print Network [OSTI]

    Gallo, Linda C.

    FINANCE DEPARTMENT Office Hours Fall 2014 NAME OFFICE HOURS COURSE # COURSE TITLE DAY TIME ROOM-1515 and by appointment FIN 323.8 FIN 323.9 FIN 323.11 FIN 326.1 Fundamentals of Finance Fundamentals of Finance Fundamentals of Finance Financial Institution Mgt TTH TTH TH TTH 0930-1045 1100-1215 1600-1840 1230-1345 GMCS

  19. 2014 Fall Seminar Series September 19, 2014

    E-Print Network [OSTI]

    2014 Fall Seminar Series September 19, 2014 Gregg 320, 12:00 ­ 1:00 Kathleen D. White, PhD, PE U and associated water resources infrastructure represent a tremendous Federal investment (~$400B over the past 50 years) that supports public safety and local and national economic growth. Hence, we have a compelling

  20. ECONOMIC EMERGENCY PROGRAM International Falls Plant Shutdown

    E-Print Network [OSTI]

    Amin, S. Massoud

    Falls. An additional 35 jobs within the corporate structure will also be affected. As the community The manufacturing industry employs 1,100 of those workers, or approximately 17 percent of all jobs, thus making is classified as a manufacturing business. Of the 1,100 manufacturing jobs in Koochiching County, 900

  1. Dynamics of Clouds Fall Semester 2012

    E-Print Network [OSTI]

    ATS712 Dynamics of Clouds Fall Semester 2012 Meeting Times: T/Th: 9-10:15am Room: ATS 101-2pm Course Description: This class focuses on the general dynamics of cloud systems. Models of fog and other Tools / Skills Cotton, W.R., G.H. Bryan, and S.C. van den Heever, 2010: Storm and Cloud Dynamics

  2. Landscape Ecology + Planning NRE 687 Fall 2013

    E-Print Network [OSTI]

    Awtar, Shorya

    Landscape Ecology + Planning NRE 687 ­ Fall 2013 Course Syllabus NRE 687: Landscape Planning in the field of landscape ecology. Hierarchy theory and methods for working across spatial scales. The social mining, collection, and validation Scientific research and application Digital tools, including Arc

  3. Fall 2012 President's Welcome Back Dear Colleagues,

    E-Print Network [OSTI]

    Engineering, Chemistry, Metallurgical and Materials Engineering, and Physics departments. I'd like to thank of the formation of the College of Engineering and Computational Sciences, and Dean Kevin Moore has experiencedFall 2012 President's Welcome Back Dear Colleagues, The excitement of new and returning students

  4. Syllabus Fall 2011 Instructor: Dr. Ginny Catania

    E-Print Network [OSTI]

    Catania, Ginny

    Glaciology Syllabus Fall 2011 Instructor: Dr. Ginny Catania Office Location: EPS 3.128, gcatania@ig.utexas.edu Office Hours: Tuesdays 1-2pm, or by appointment Class Times/Location: T & Th: 11-12:30pm EPS 1

  5. Fall 2013 BOSTONIA ancient Greece is alive

    E-Print Network [OSTI]

    Spence, Harlan Ernest

    Fall 2013 BOSTONIA ancient Greece is alive and well and living conspicuously, for those who pay. And while the University has a sizable community of scholars who focus on ancient Greece from several Professor is David Roochnik, a CAS professor and chair of philosophy. "Ancient Greece is a living world

  6. Enrollment Analysis Final for Fall 2014

    E-Print Network [OSTI]

    Hutcheon, James M.

    ) November 6, 2014 Project Request: Enrollment Analysis ­ Final for Fall 2014. Requested by: Dr. Brooks Keel, President; Dr. Teresa Thompson, Vice President, Student Affairs and Enrollment Management Project Abstract, progression, and graduation. Methodology: The following items and their sources are included in this report

  7. High Noon Lecture Series 2012 Fall Schedule

    E-Print Network [OSTI]

    signed the Affordable Care Act into law. Some health insurance reforms have already taken place at how important arenas of constitutional law, from health care reform to abortion to affirmative actionHigh Noon Lecture Series 2012 Fall Schedule September 19 "Deciphering the Affordable Care Act" Glen

  8. CALIFORNIA DREAMIN' IGHSPA 2013 FALL CONFERENCE

    E-Print Network [OSTI]

    of the country's population, represents only 2.3 percent of ground source heat pump activity ....." SourceCALIFORNIA DREAMIN' IGHSPA 2013 FALL CONFERENCE Bill Martin built an air-sourced heat pump home's potential to lower greenhouse gases been recognized by regulators? Have electric IOUs financed ground loops

  9. Math 110 Fall 2007 Basic Calculus I

    E-Print Network [OSTI]

    Buckmire, Ron

    will have at some point t years in the future, if we know the rate M (t) at which money increases in the space below: 1 #12;Math 110 Class 31 Fall 2007 Newton's Law of Cooling Newton's Law of Cooling states that the rate of cooling is proportional to the difference between the object's temperature and the ambient

  10. CenterPiece | Fall 2012 15 REBUILDINGTHELOSTARCHIVE

    E-Print Network [OSTI]

    Chisholm, Rex L.

    to be sectioned, and processing them for regular histopathology, high throughput X-ray fluorescence elementalCenterPiece | Fall 2012 15 REBUILDINGTHELOSTARCHIVE From the 1950s until the end of the Cold War and stockpiled food, scientists around the world worked to understand the biological consequences of nuclear

  11. FALL LEADERSHIP CONFERENCE OCTOBER 29, 2004

    E-Print Network [OSTI]

    Rusu, Adrian

    FALL LEADERSHIP CONFERENCE OCTOBER 29, 2004 OVERVIEW This conference is a unique opportunity for your chapter officers and members to learn about HOSA leadership, and the responsibilities for their office. This conference will combine the leadership skills training and officer responsibilities

  12. Fall Rubber Colloquium CHARACTERIZATION OF DISPERSION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    9th Fall Rubber Colloquium CHARACTERIZATION OF DISPERSION MECHANISMS OF AGGLOMERATED FILLERS (styrene-butadiene rubber). The objective was to determine the role of the intrinsic parameters Carbon black and silica are widely used as reinforcing fillers for rubber compounds in the tire industry

  13. Experimental Foods 709:489 Fall 2012

    E-Print Network [OSTI]

    Chen, Kuang-Yu

    #11 Emulsions & fat replacers F 11/30 Food Colors T 12/4 Flavors & seasonings F 12/7 Genetically modified foods Reserve reading Research paper due 12/7 T 12/11 EXAM #12;Experimental Foods 709:489 Fall 2012 Lecture: Tuesday & Friday 9:30- 10:25 AM 106 HSB Lab sections

  14. FALL 2012 OU/SPC CAREER EXPERIENCE

    E-Print Network [OSTI]

    FALL 2012 OU/SPC CAREER EXPERIENCE PROGRAM The Storm Prediction Center (SPC) and the OU School will spend between 8-10 hrs per week at the SPC working on a research project related to U.S. severe weather through this program. The student will also will have the opportunity to spend several days in the SPC

  15. Chemistry 106X -Fall 2010 General Chemistry

    E-Print Network [OSTI]

    Wagner, Diane

    Chemistry 106X - Fall 2010 General Chemistry Instructor: Christopher Iceman Class: MWF 9 bookstore or elsewhere: · Chemistry and Chemical Reactivity 7th Ed. by Kotz, Treichel, and Townsend-0-495-38703-9 Electronic Book - ISBN 978-0-495-68043-7 · OWL pin number for Chemistry and Chemical Reactivity 7th Ed. (1

  16. CNR GRADUATION SURVEY RESULTS Fall, 2002

    E-Print Network [OSTI]

    (38% are employed or attending grad school) #12;Natural Resource Management (17 completed surveys) 4CNR GRADUATION SURVEY RESULTS Fall, 2002 Received 73 completed surveys out of 79 students or are planning to attend graduate school after graduation $21,710 Average salary of the students who indicated

  17. Inside this issue: New this fall 1

    E-Print Network [OSTI]

    Linsley, Braddock K.

    .albany.edu/gogreen. Interesting in trying vanpooling? Want to car- pool but don't know how to find someone to share the ride of Environmental Sustainability Sustainability Bulletin New this fall Car sharing Rent cars on an hourly basis the week following the program for any group interested in trying it out. The car- pooling service features

  18. Internship -Fall 2011 Search Solutions Digital Media

    E-Print Network [OSTI]

    Cinabro, David

    Internship - Fall 2011 Search Solutions Digital Media SSdigitalmedia.com About us: Search Solutions Search Solutions Digital Media 1500 N. Stephenson HWY Royal Oak, MI 48067 Amanda are a full service digital advertising agency. We build custom web packages to meet our clients' exact needs

  19. Purdue College of Science|Fall 2012

    E-Print Network [OSTI]

    Kihara, Daisuke

    Purdue College of Science|Fall 2012 :: Geosciences in the Cinema :: Field Notes Colombia in Roberts Frederick L. Hovde Dean of Science Joseph S. Francisco Associate Dean for Research and Graduate Biological Sciences Paul B. Shepson Chemistry Sunil Prabhakar Computer Science Jon Harbor Earth, Atmospheric

  20. California Environmental Law & Policy Issues (Fall 2008)

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Law 273.71 California Environmental Law & Policy Issues (Fall 2008) Units: 2 CCN (2Ls/3Ls): 49696 for Environmental Law & Policy and a Lecturer in Residence at Boalt Hall School of Law. He received his law degree of key California environmental law and policy issues. Guest speakers include a distinguished group

  1. Apparatus and method for laser velocity interferometry

    DOE Patents [OSTI]

    Stanton, Philip L. (Bernalillo County, NM); Sweatt, William C. (Albuquerque, NM); Crump, Jr., O. B. (Albuquerque, NM); Bonzon, Lloyd L. (Albuquerque, NM)

    1993-09-14T23:59:59.000Z

    An apparatus and method for laser velocity interferometry employing a fixed interferometer cavity and delay element. The invention permits rapid construction of interferometers that may be operated by those non-skilled in the art, that have high image quality with no drift or loss of contrast, and that have long-term stability even without shock isolation of the cavity.

  2. PERFORMANCE EFFECTS OF AIR VELOCITY PROFILES IN

    E-Print Network [OSTI]

    PERFORMANCE EFFECTS OF AIR VELOCITY PROFILES IN A RESIDENTIAL HEAT PUMP By NATHAN ANDREW WEBER PROFILES IN A RESIDENTIAL HEAT PUMP Thesis Approved: _______________________________________ Thesis Advisor the air speed transducer mount and the Plexiglas model of the heat pump. Ipseng Iu and myself worked side

  3. fall convocation THE UNIVERSITY OF NEW MEXICO SCHOOL OF ENGINEERING

    E-Print Network [OSTI]

    New Mexico, University of

    fall convocation THE UNIVERSITY OF NEW MEXICO SCHOOL OF ENGINEERING fall convocation #12;Message from the Dean To the Fall 2012 University of New Mexico School of Engineering Graduates I am delighted and honored to welcome you to the University of New Mexico School of Engineering Convocation

  4. 30 BOSTONIA Fall 2014 PHOTOGRAPHS BY MATTIA BALSAMINI Lessons from

    E-Print Network [OSTI]

    Spence, Harlan Ernest

    30 BOSTONIA Fall 2014 PHOTOGRAPHS BY MATTIA BALSAMINI Lessons from #12;Fall 2014 BOSTONIA 31 Venice LASKOWSKI #12;32 BOSTONIA Fall 2014 On a warm June night, tourists sip cocktails on the banks of the Grand into the ground, effectively petrifying and preserving them. They put planks on top of these pillars, and marble

  5. Prof. A. Suciu Name: MTH 1733 QUIZ 4 Fall 1997

    E-Print Network [OSTI]

    Prof. A. Suciu Name: MTH 1733 QUIZ 4 Fall 1997 1. 6 points Solve the following initial value of differential equations: x 0 = 2x + y y 0 = \\Gammax + 4y #12; MTH 1733 Quiz 4 Fall 1997 3. 6 points A tank present? #12; MTH 1733 Quiz 4 Fall 1997 5. 6 points Consider the following autonomous differential

  6. Automatic Fall Detection Based on Doppler Radar Motion Signature

    E-Print Network [OSTI]

    He, Zhihai "Henry"

    than one third of adults 65 and older fall each year in the United States. To address the problem, we above age 65 [2]. The death rate caused by falls among elders is increasing quickly over the past decade classification; SVM; kNN I. INTRODUCTION Falls are the leading causes of accidental death in the US population

  7. Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, and Mechanics

    E-Print Network [OSTI]

    Zimmer, Valerie Louise

    2011-01-01T23:59:59.000Z

    Happy  Isles  and  the  1999  Glacier  Point  rock  falls,  there   was   an   attempt   to   monitor   rock   fall   in   Yosemite   Valley  

  8. A MAGNETIC CALIBRATION OF PHOTOSPHERIC DOPPLER VELOCITIES

    SciTech Connect (OSTI)

    Welsch, Brian T.; Fisher, George H. [Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450 (United States); Sun, Xudong [W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305 (United States)

    2013-03-10T23:59:59.000Z

    The zero point of measured photospheric Doppler shifts is uncertain for at least two reasons: instrumental variations (from, e.g., thermal drifts); and the convective blueshift, a known correlation between intensity and upflows. Accurate knowledge of the zero point is, however, useful for (1) improving estimates of the Poynting flux of magnetic energy across the photosphere, and (2) constraining processes underlying flux cancellation, the mutual apparent loss of magnetic flux in closely spaced, opposite-polarity magnetogram features. We present a method to absolutely calibrate line-of-sight (LOS) velocities in solar active regions (ARs) near disk center using three successive vector magnetograms and one Dopplergram coincident with the central magnetogram. It exploits the fact that Doppler shifts measured along polarity inversion lines (PILs) of the LOS magnetic field determine one component of the velocity perpendicular to the magnetic field, and optimizes consistency between changes in LOS flux near PILs and the transport of transverse magnetic flux by LOS velocities, assuming that ideal electric fields govern the magnetic evolution. Previous calibrations fitted the center-to-limb variation of Doppler velocities, but this approach cannot, by itself, account for residual convective shifts at the limb. We apply our method to vector magnetograms of AR 11158, observed by the Helioseismic and Magnetic Imager aboard the Solar Dynamics Observatory, and find clear evidence of offsets in the Doppler zero point in the range of 50-550 m s{sup -1}. In addition, we note that a simpler calibration can be determined from an LOS magnetogram and Dopplergram pair from the median Doppler velocity among all near-disk-center PIL pixels. We briefly discuss shortcomings in our initial implementation, and suggest ways to address these. In addition, as a step in our data reduction, we discuss the use of temporal continuity in the transverse magnetic field direction to correct apparently spurious fluctuations in resolution of the 180 Degree-Sign ambiguity.

  9. Comment on "Pulsar Velocities and Neutrino Oscillations"

    E-Print Network [OSTI]

    Y. -Z. Qian

    1997-05-08T23:59:59.000Z

    In a recent Letter, Kusenko and Segre proposed a new mechanism to explain the observed proper motions of pulsars. Their mechanism was based on the asymmetric neutrino emission induced by neutrino oscillations in the protoneutron star magnetic field. In this note I point out that their estimate of the asymmetry in the neutrino emission is incorrect. A proper calculation shows that their mechanism at least requires a magnetic field of 10**16 G in order to produce the observed average pulsar velocity.

  10. On Pulsar Velocities from Neutrino Oscillations

    E-Print Network [OSTI]

    Michael Birkel; Ramon Toldra

    1997-06-11T23:59:59.000Z

    It has been recently suggested that magnetically affected neutrino oscillations inside a cooling protoneutron star, created in a supernova explosion, could explain the large proper motion of pulsars. We investigate whether this hypothesis is in agreement with the observed properties of pulsars and find that present data disfavor the suggested mechanism. The relevance of our results for other models proposed to understand the origin of pulsar velocities is also discussed.

  11. Slow group velocity and Cherenkov radiation

    E-Print Network [OSTI]

    I. Carusotto; M. Artoni; G. C. La Rocca; F. Bassani

    2001-03-12T23:59:59.000Z

    We theoretically study the effect of ultraslow group velocities on the emission of Vavilov-Cherenkov radiation in a coherently driven medium. We show that in this case the aperture of the group cone on which the intensity of the radiation peaks is much smaller than that of the usual wave cone associated with the Cherenkov coherence condition. We show that such a singular behaviour may be observed in a coherently driven ultracold atomic gas.

  12. Irregular wave induced velocities in shallow water

    E-Print Network [OSTI]

    Sultan, Nels John

    1991-01-01T23:59:59.000Z

    probabil- ity density function. This thesis applies this expanded distribution to fluid particle velocities instead of wave elevations. Ochi (1982) presents a review of recent ad- vances in the stochastic analysis of random seas. He notes that the first..., (Longuet-Higgins 1963), that purely linear waves will have a Gaussian distribu- tion. Therefore, any deviation from a Gaussian distribution must be attributed to wave nonlinearities. Ochi (1982) discusses a series of experiments by Honda and Mitsuyasu...

  13. Radial velocities of southern visual multiple stars

    SciTech Connect (OSTI)

    Tokovinin, Andrei [Cerro Tololo Inter-American Observatory, Casilla 603, La Serena (Chile); Pribulla, Theodor [Astronomical Institute, Slovak Academy of Sciences, 059 60 Tatranská Lomnica (Slovakia); Fischer, Debra, E-mail: atokovinin@ctio.noao.edu, E-mail: pribulla@ta3.sk, E-mail: debra.fischer@gmail.com [Department of Astronomy, Yale University, New Haven, CT 06511 (United States)

    2015-01-01T23:59:59.000Z

    High-resolution spectra of visual multiple stars were taken in 2008–2009 to detect or confirm spectroscopic subsystems and to determine their orbits. Radial velocities of 93 late-type stars belonging to visual multiple systems were measured by numerical cross-correlation. We provide the individual velocities, the width, and the amplitude of the Gaussians that approximate the correlations. The new information on the multiple systems resulting from these data is discussed. We discovered double-lined binaries in HD 41742B, HD 56593C, and HD 122613AB, confirmed several other known subsystems, and constrained the existence of subsystems in some visual binaries where both components turned out to have similar velocities. The orbits of double-lined subsystems with periods of 148 and 13 days are computed for HD 104471 Aa,Ab and HD 210349 Aa,Ab, respectively. We estimate individual magnitudes and masses of the components in these triple systems and update the outer orbit of HD 104471 AB.

  14. CHEMISTRY 3311, Fall 1998 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    Name: -1- CHEMISTRY 3311, Fall 1998 Professor Walba Third Hour Exam November 19, 1998 scores: 1) 2) 3) 4) PLEASE read the questions carefully! This is a closed-book "open model" exam. You may use for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

  15. CHEM 3311, Fall 2010 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    CHEM 3311, Fall 2010 Professor Walba First Hour Exam September 23, 2010 scores: 1) 2) 3) 4) 5) CU-book exam. The use of notes, calculators, scratch paper, or cell phones will not be allowed during the exam the backs of the pages for scratch. ! H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9

  16. CHEMISTRY 3311, Fall 2000 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    Name: -1- CHEMISTRY 3311, Fall 2000 Professor Walba Third Hour Exam November 16, 2000 scores: 1) 2) 3) 4) PLEASE read the questions carefully! This is a closed-book "open model" exam. You may use for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

  17. CHEMISTRY 3311, Fall 2000 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    Name: -1- CHEMISTRY 3311, Fall 2000 Professor Walba Second Hour Exam October 26, 2000 scores: 1) 2) 3) 4) PLEASE read the questions carefully! This is a closed-book "open model" exam. You may use for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

  18. CHEM 3311, Fall 2010 Professor Walba

    E-Print Network [OSTI]

    Walba, David

    CHEM 3311, Fall 2010 Professor Walba Second Hour Exam October 21, 2010 scores: 1) 2) 3) 4) 5) CU-book exam. The use of notes, calculators, scratch paper, or cell phones will not be allowed during the exam the backs of the pages for scratch. ! H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9

  19. Journal of Undergraduate Research, Fall 2009

    E-Print Network [OSTI]

    2009-10-01T23:59:59.000Z

    , electrospray is not a universal ionizer. Some of the ingredients may not have been ionized and therefore would not be detected by the mass spectrometer. Qualitative analysis was performed on each of the samples’ NMR spectra. The body wash samples...The Journal of Undergraduate Research at the University of Kansas Second Edition | Fall 2009 ON THE COVER Jayhawk Boulevard winds between Fraser Hall (left) and Lippincott and Dyche halls on the Lawrence campus. Courtesy University Relations...

  20. On the velocity-strengthening behavior of dry friction

    E-Print Network [OSTI]

    Bar-Sinai, Yohai; Brener, Efim A; Bouchbinder, Eran

    2013-01-01T23:59:59.000Z

    The onset of frictional instabilities, e.g. earthquakes nucleation, is intimately related to velocity-weakening friction, in which the frictional resistance of interfaces decreases with increasing slip velocity. While this frictional response has been studied extensively, much less attention has been given to steady-state velocity-strengthening friction, in spite of its importance for various aspects of frictional phenomena such as the propagation speed of interfacial rupture fronts and the amount of stored energy released by them. In this note we suggest that a crossover from steady-state velocity-weakening friction at small slip velocities to steady-state velocity-strengthening friction at higher velocities might be a generic feature of dry friction. We further argue that while thermally activated rheology naturally gives rise to logarithmic steady-state velocity-strengthening friction, a crossover to stronger-than-logarithmic strengthening might take place at higher slip velocities, possibly accompanied by...

  1. Albeni Falls Wildlife Mitigation : Annual Report 2002.

    SciTech Connect (OSTI)

    Terra-Berns, Mary

    2003-01-01T23:59:59.000Z

    The Albeni Falls Interagency Work Group continued to actively engage in implementing wildlife mitigation actions in 2002. Regular Work Group meetings were held to discuss budget concerns affecting the Albeni Falls Wildlife Mitigation Program, to present potential acquisition projects, and to discuss and evaluate other issues affecting the Work Group and Project. Work Group members protected 1,386.29 acres of wildlife habitat in 2002. To date, the Albeni Falls project has protected approximately 5,914.31 acres of wildlife habitat. About 21% of the total wildlife habitat lost has been mitigated. Administrative activities have increased as more properties are purchased and continue to center on restoration, operation and maintenance, and monitoring. In 2001, Work Group members focused on development of a monitoring and evaluation program as well as completion of site-specific management plans. This year the Work Group began implementation of the monitoring and evaluation program performing population and plant surveys, data evaluation and storage, and map development as well as developing management plans. Assuming that the current BPA budget restrictions will be lifted in the near future, the Work Group expects to increase mitigation properties this coming year with several potential projects.

  2. Falling through the black hole horizon

    E-Print Network [OSTI]

    Brustein, Ram

    2015-01-01T23:59:59.000Z

    We consider the fate of a small classical object, a "stick", as it falls through the horizon of a large black hole (BH). Classically, the equivalence principle dictates that the stick is affected by small tidal forces, and Hawking's quantum-mechanical model of BH evaporation makes essentially the same prediction. If, on the other hand, the BH horizon is surrounded by a "firewall", the stick will be consumed as it falls through. We have recently extended Hawking's model by taking into account the quantum fluctuations of the geometry and the classical back-reaction of the emitted particles. Here, we calculate the strain exerted on the falling stick for our model. The strain depends on the near-horizon state of the Hawking pairs. We find that, after the Page time when the state of the pairs deviates significantly from maximal entanglement (as required by unitarity), the induced strain in our semiclassical model is still parametrically small. This is because the number of the disentangled pairs is parametrically ...

  3. Unexplored Aspect of Velocity of light

    E-Print Network [OSTI]

    Abhijit Biswas; Krishnan RS Mani

    2008-05-13T23:59:59.000Z

    In the post-Maxwellian era, sensing that the tide of discoveries in electromagnetim indicated a decline of the mechanical view, Einstein replaced Newton's three absolutes -- space, time and mass, with a single one, the velocity of light. The magnitude of the velocity of light was first determined and proven to be finite independently by Ole Romer and Bradley in the eighteenth century. In the nineteenth century, Fizeau carried out the first successful measurement of the speed of light using an earthbound apparatus. Thereafter, many earthbound experiments were conducted for its determination till 1983, when its magnitude was frozen at a fixed value after it was determined up to an accuracy level of a fraction of a meter per second. Einstein considered the speed of light derived from terrestrial experiments, to be the limiting speed of all natural phenomena. Einstein stated in connection with his general relativity theory that light rays could curve only when the velocity of propagation of light varies with position. Experiments have been conducted to prove the phenomenon of light deflection to higher and higher accuracy levels, but none so far to determine the speed of light at locations closer to the sun. To verify some essential aspects of general relativity, NASA had commendably planned many costly experiments. Hence, NASA can now be expected to expeditiously plan and execute the low cost experiment proposed here, so as to conclusively verify the effect of the solar gravitational field on the speed of light, as regards the important predictions of Einstein's theory of gravitation and of its remodeled form -- the Remodeled Relativity Theory, which retained and incorporated only experimentally proven concepts and principles.

  4. Velocity-selected molecular pulses produced by an electric guide

    SciTech Connect (OSTI)

    Sommer, C.; Motsch, M.; Chervenkov, S.; Buuren, L. D. van; Zeppenfeld, M.; Pinkse, P. W. H.; Rempe, G. [Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching (Germany)

    2010-07-15T23:59:59.000Z

    Electrostatic velocity filtering is a technique for the production of continuous guided beams of slow polar molecules from a thermal gas. We extended this technique to produce pulses of slow molecules with a narrow velocity distribution around a tunable velocity. The pulses are generated by sequentially switching the voltages on adjacent segments of an electric quadrupole guide synchronously with the molecules propagating at the desired velocity. This technique is demonstrated for deuterated ammonia (ND{sub 3}), delivering pulses with a velocity in the range of 20-100 m/s and a relative velocity spread of (16{+-}2)% at full width at half maximum. At velocities around 60 m/s, the pulses contain up to 10{sup 6} molecules each. The data are well reproduced by Monte Carlo simulations, which provide useful insight into the mechanisms of velocity selection.

  5. Orthogonal-Phase-Velocity Propagation of Electromagnetic Plane Waves

    E-Print Network [OSTI]

    Tom G. Mackay; Akhlesh Lakhtakia

    2005-11-30T23:59:59.000Z

    In an isotropic, homogeneous, nondissipative, dielectric-magnetic medium that is simply moving with respect to an inertial reference frame, planewave solutions of the Maxwell curl postulates can be such that the phase velocity and the time-averaged Poynting vector are mutually orthogonal. Orthogonal-phase-velocity propagation thus adds to the conventional positive-phase-velocity propagation and the recently discovered negative-phase-velocity propagation that is associated with the phenomenon of negative refraction.

  6. Experimental investigation of velocity biasing in laser Doppler anemometry

    E-Print Network [OSTI]

    Wiedner, Brian Gregory

    1988-01-01T23:59:59.000Z

    Tech University; Chair of Advisory Commettee: Dr. Gerald L. Morrison The effects of several velocity bias reduction schemes were invest- igated using a 3-D laser Doppler anemometer and counter type (burst) signal processors. Amongst these schemes... of Sample Size on Effects of Sample Size on Effects of Sample Size on Effects of Sample Size on Velocity and Reynolds Stresses Axial Mean Velocity Radial Mean Velocity Axial Turbulence Intensity Radial Turbulence Intensity Axial/Radial Correlation...

  7. Radial Velocity Variability of Field Brown Dwarfs

    E-Print Network [OSTI]

    Prato, L; Rice, E L; McLean, I S; Kirkpatrick, J D; Burgasser, A J; Kim, S S

    2015-01-01T23:59:59.000Z

    We present paper six of the NIRSPEC Brown Dwarf Spectroscopic Survey, an analysis of multi-epoch, high-resolution (R~20,000) spectra of 25 field dwarf systems (3 late-type M dwarfs, 16 L dwarfs, and 6 T dwarfs) taken with the NIRSPEC infrared spectrograph at the W. M. Keck Observatory. With a radial velocity precision of ~2 km/s, we are sensitive to brown dwarf companions in orbits with periods of a few years or less given a mass ratio of 0.5 or greater. We do not detect any spectroscopic binary brown dwarfs in the sample. Given our target properties, and the frequency and cadence of observations, we use a Monte Carlo simulation to determine the detection probability of our sample. Even with a null detection result, our 1 sigma upper limit for very low mass binary frequency is 18%. Our targets included 7 known, wide brown dwarf binary systems. No significant radial velocity variability was measured in our multi-epoch observations of these systems, even for those pairs for which our data spanned a significant ...

  8. Velocity and attenuation in partially molten rocks

    SciTech Connect (OSTI)

    Mavko, G.M.

    1980-10-10T23:59:59.000Z

    Interpretation of seismic velocity and attenuation in partially molten rocks has been limited, with few exceptions, to models that assume the melt to be distributed either as spheres or as thin films. However, other melt phase geometries, such as interconnected tubes along grain edges, might equally well account for seismic observations if there is a much larger fraction of melt. Seismic velocity and attenuation are estimated in rocks in which the melt phase has the tube geometry, and the results are compared with results expected for the more familiar film model under similar conditions. For a given melt fraction, tubes are found to give moduli intermediate between moduli for rigid spherical inclusions and compliant films. For example, in polycrystalline olivine at 20 kbar the model predicts a decrease in V/sub s/ of 10% and a decrease in V/sub p/ of 5% at 0.05 melt fraction, without considering inelastic relaxation. Shear attenuation appears to be dominated by viscous flow of melt between the tubes and/or films. For olivine the tube model predicts the increment of relaxation due to melt, ..delta mu../..mu.., to be 0.01 at 0.05 melt fraction. Relaxation of the bulk modulus is dominated by flow between melt pockets of different shape, heat flow, and solid-melt phase change. If melt is present, considerable bulk attenuation is expected, although the relaxation may be observable only at long periods, outside the seismic body wave band.

  9. The Systemic Velocity of Eta Carinae

    E-Print Network [OSTI]

    Nathan Smith

    2004-06-23T23:59:59.000Z

    High-resolution spectra of molecular hydrogen in the Homunculus nebula allow for the first direct measurement of the systemic velocity of Eta Carinae. Near-infrared long-slit data for H2 1-0 S(1) lambda 21218 obtained with the Phoenix spectrometer on the Gemini South telescope give Vsys=-8.1pm1 km/s (heliocentric), or VLSR=-19.7pm1 km/s, from the average of the near and far sides of the Homunculus. This measurement considerably improves the precision for the value of -7pm10 km/s inferred from neighboring O-type stars in the Carina nebula. New near-infrared spectra also provide a high-resolution line profile of [Fe II] lambda 16435 emission from gas condensations known as the Weigelt objects without contamination from the central star, revealing a line shape with complex kinematic structure. Previously, uncertainty in the Weigelt knots' kinematics was dominated by the adopted systemic velocity of Eta Car.

  10. Seismic Velocity Estimation from Time Migration Maria Kourkina Cameron

    E-Print Network [OSTI]

    Cameron, Maria Kourkina

    Seismic Velocity Estimation from Time Migration by Maria Kourkina Cameron Diplom (Moscow Institute Dung-Hai Lee Spring 2007 #12;Seismic Velocity Estimation from Time Migration Copyright c 2007 by Maria Kourkina Cameron #12;Abstract Seismic Velocity Estimation from Time Migration by Maria Kourkina Cameron

  11. Fall 2001 Vol. 2, No. 4 ii Colorado Climate

    E-Print Network [OSTI]

    Colorado Climate Fall 2001 Vol. 2, No. 4 #12;ii Colorado Climate Table of Contents On Being a Small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 July 2001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 August 2001

  12. Idaho Falls Power- Commercial Energy Conservation Loan Program

    Broader source: Energy.gov [DOE]

    Idaho Falls Power is offering a zero interest loan program to qualifying commercial customers to install efficient lighting and other energy conservation measures. The building must receive its...

  13. Idaho Falls Power- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Idaho Falls Power offers rebates to eligible customers on energy efficient HVAC measures and weatherization upgrades. Rebates are available on heat pumps, new manufactured homes and insulation....

  14. Idaho Falls Power- Commercial Energy Conservation Rebate Program

    Broader source: Energy.gov [DOE]

    In addition to loan programs, Idaho Falls Power offers rebates for customers meeting certain criteria. An energy audit will inspect the following measures and recommend upgrades as needed:...

  15. River Falls Municipal Utilities- Business Energy Efficiency Rebate Program (Wisconsin)

    Broader source: Energy.gov [DOE]

    River Falls Municipal Utility (RFMU) offers a variety of rebates to business customers for implementing energy efficient equipment upgrades. Rebates are available for commercial lighting, central...

  16. Math 13800 Mathematics for Elementary Education II Fall 2014 ...

    E-Print Network [OSTI]

    Math Dept.

    2014-08-19T23:59:59.000Z

    Mathematics for Elementary Education II. Fall 2014. Coordinator: Renee Figueroa (formerly Renee Roames) MATH 808 ph: 494-1929 email: rroames@

  17. Math 13700 Mathematics for Elementary Education I Fall 2014

    E-Print Network [OSTI]

    User

    2014-08-21T23:59:59.000Z

    Mathematics for Elementary Education I. Fall 2014. Coordinator: Renee Figueroa (formerly Renee Roames) MATH 808 ph: 494-1929 email: rroames@purdue.

  18. albeni falls wildlife: Topics by E-print Network

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

    JAMES A. MARTIN, Department of Wildlife, Fisheries 5 Wildlife Landscape Ecology -Syllabus FS599 Fall Term 2010 Geosciences Websites Summary: 1 Wildlife Landscape Ecology -...

  19. #tipsEnergy: Weatherizing Your Home for Fall

    Broader source: Energy.gov [DOE]

    With the start of colder weather, we are sharing fall energy-saving tips that will help you save money and stay comfortable.

  20. River Falls Municipal Utilities- Energy Star Appliance Rebates

    Broader source: Energy.gov [DOE]

    River Falls Municipal Utility (RFMU), in conjuction with the Wisconsin Focus on Energy program, offers a variety of rebates to residential electric customers for upgrading to energy efficient...

  1. Cathode fall measurement in a dielectric barrier discharge in helium

    SciTech Connect (OSTI)

    Hao, Yanpeng; Zheng, Bin; Liu, Yaoge [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)] [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)

    2013-11-15T23:59:59.000Z

    A method based on the “zero-length voltage” extrapolation is proposed to measure cathode fall in a dielectric barrier discharge. Starting, stable, and discharge-maintaining voltages were measured to obtain the extrapolation zero-length voltage. Under our experimental conditions, the “zero-length voltage” gave a cathode fall of about 185 V. Based on the known thickness of the cathode fall region, the spatial distribution of the electric field strength in dielectric barrier discharge in atmospheric helium is determined. The strong cathode fall with a maximum field value of approximately 9.25 kV/cm was typical for the glow mode of the discharge.

  2. ,"International Falls, MN Natural Gas Pipeline Imports From Canada...

    U.S. Energy Information Administration (EIA) Indexed Site

    International Falls, MN Natural Gas Pipeline Imports From Canada (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of...

  3. ,"Niagara Falls, NY Natural Gas Pipeline Imports From Canada...

    U.S. Energy Information Administration (EIA) Indexed Site

    Imports From Canada (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Niagara Falls,...

  4. Safety and Occupational Health Specialist (Fall Protection Specialist)

    Broader source: Energy.gov [DOE]

    The incumbent in this position serves as a Fall Protection Specialist in the Safety Office. Safety is responsible for administering BPA's safety program and providing advice, counsel, direction,...

  5. Seating Final Exam, Fall 2011, Bailey classes, Lambert Fieldhouse

    E-Print Network [OSTI]

    Bailey, Charlotte M

    2011-12-07T23:59:59.000Z

    Seating Final Exam, Fall 2011, KLOSTER classes, Lambert. Fieldhouse. NAME. ROW. SEAT NUMBER. Arrington, Brook L. 1. 1. Blevins, Sash M. 2. 1. Brown ...

  6. Cedar Falls Utilities- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    The Cedar Falls Utilities (CFU) Energy Efficiency Rebate Program provides rebates for energy efficient heating and cooling equipment, thermal envelope improvements and appliance recycling. The...

  7. Accident Investigation of the September 20, 2012 Fatal Fall from...

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

    September 20, 2012 Fatal Fall from the Dworshak-Taft 1 Transmission Tower, at the Bonneville Power Marketing Administration Accident Investigation of the September 20, 2012 Fatal...

  8. Accident Investigation of the June 1, 2013, Stairway Fall Resulting...

    Energy Savers [EERE]

    Accident Investigation of the June 1, 2013, Stairway Fall Resulting in a Federal Employee Fatality at DOE Headquarters Germantown, Maryland Accident Investigation of the June 1,...

  9. The NRS Transect 4:1 (fall 1985)

    E-Print Network [OSTI]

    UC Natural Reserve System

    1985-01-01T23:59:59.000Z

    Transect, Fall Publications Carpinteria Salt Marsh: Wayne R.natural history of the Carpinteria Salt Marsh, complete withencompasses the 120-acre Carpinteria Salt Marsh Reserve, a

  10. Spawning Habitat Studies of Hanford Reach Fall Chinook Salmon (Oncorhynchus tshawytscha), Final Report.

    SciTech Connect (OSTI)

    Geist, David R.; Arntzen, Evan V.; Chien, Yi-Ju (Pacific Northwest National Laboratory)

    2009-03-02T23:59:59.000Z

    The Pacific Northwest National Laboratory conducted this study for the Bonneville Power Administration (BPA) with funding provided through the Northwest Power and Conservation Council(a) and the BPA Fish and Wildlife Program. The study was conducted in the Hanford Reach of the Columbia River. The goal of study was to determine the physical habitat factors necessary to define the redd capacity of fall Chinook salmon that spawn in large mainstem rivers like the Hanford Reach and Snake River. The study was originally commissioned in FY 1994 and then recommissioned in FY 2000 through the Fish and Wildlife Program rolling review of the Columbia River Basin projects. The work described in this report covers the period from 1994 through 2004; however, the majority of the information comes from the last four years of the study (2000 through 2004). Results from the work conducted from 1994 to 2000 were covered in an earlier report. More than any other stock of Pacific salmon, fall Chinook salmon (Oncorhynchus tshawytscha) have suffered severe impacts from the hydroelectric development in the Columbia River Basin. Fall Chinook salmon rely heavily on mainstem habitats for all phases of their life cycle, and mainstem hydroelectric dams have inundated or blocked areas that were historically used for spawning and rearing. The natural flow pattern that existed in the historic period has been altered by the dams, which in turn have affected the physical and biological template upon which fall Chinook salmon depend upon for successful reproduction. Operation of the dams to produce power to meet short-term needs in electricity (termed power peaking) produces unnatural fluctuations in flow over a 24-hour cycle. These flow fluctuations alter the physical habitat and disrupt the cues that salmon use to select spawning sites, as well as strand fish in near-shore habitat that becomes dewatered. The quality of spawning gravels has been affected by dam construction, flood protection, and agricultural and industrial development. In some cases, the riverbed is armored such that it is more difficult for spawners to move, while in other cases the intrusion of fine sediment into spawning gravels has reduced water flow to sensitive eggs and young fry. Recovery of fall Chinook salmon populations may involve habitat restoration through such actions as dam removal and reservoir drawdown. In addition, habitat protection will be accomplished through set-asides of existing high-quality habitat. A key component to evaluating these actions is quantifying the salmon spawning habitat potential of a given river reach so that realistic recovery goals for salmon abundance can be developed. Quantifying salmon spawning habitat potential requires an understanding of the spawning behavior of Chinook salmon, as well as an understanding of the physical habitat where these fish spawn. Increasingly, fish biologists are recognizing that assessing the physical habitat of riverine systems where salmon spawn goes beyond measuring microhabitat like water depth, velocity, and substrate size. Geomorphic features of the river measured over a range of spatial scales set up the physical template upon which the microhabitat develops, and successful assessments of spawning habitat potential incorporate these geomorphic features. We had three primary objectives for this study. The first objective was to determine the relationship between physical habitats at different spatial scales and fall Chinook salmon spawning locations. The second objective was to estimate the fall Chinook salmon redd capacity for the Reach. The third objective was to suggest a protocol for determining preferable spawning reaches of fall Chinook salmon. To ensure that we collected physical data within habitat that was representative of the full range of potential spawning habitat, the study area was stratified based on geomorphic features of the river using a two-dimensional river channel index that classified the river cross section into one of four shapes based on channel symmetry, depth, and width. We found t

  11. Hawking radiation on a falling lattice

    E-Print Network [OSTI]

    Ted Jacobson; David Mattingly

    2000-01-12T23:59:59.000Z

    Scalar field theory on a lattice falling freely into a 1+1 dimensional black hole is studied using both WKB and numerical approaches. The outgoing modes are shown to arise from incoming modes by a process analogous to a Bloch oscillation, with an admixture of negative frequency modes corresponding to the Hawking radiation. Numerical calculations show that the Hawking effect is reproduced to within 0.5% on a lattice whose proper spacing where the wavepacket turns around at the horizon is $\\sim0.08$ in units where the surface gravity is 1.

  12. Bioenergy Deployment Consortium (BDC) 2014 Fall Symposium

    Broader source: Energy.gov [DOE]

    The 2014 BDC Fall Symposium will be held on October 21–22, 2014 in Fort Myers, Florida. The event will include a tour of the Algenol facility on Wednesday morning. The symposium will have panels for progress reports from current cellulosic bio-product companies, updates on government policy from several agencies, scale-up strategies,and lessons learned. POET-DSM will provide the after dinner success story. Neil Rossmeissl, Program Manager, Algal Program, Bioenergy Technologies Office, will be delivering the keynote address on expanding the bioeconomy.

  13. ARM - Field Campaign - Fall 1997 Cloud IOP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8LigovCampaignsCLEX-5govCampaignsFall 1997 Cloud IOP ARM Data

  14. ARM - Field Campaign - Fall 1997 SCM IOP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8LigovCampaignsCLEX-5govCampaignsFall 1997 Cloud IOP ARM

  15. ARM - Field Campaign - Fall 1997 Shortwave IOP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8LigovCampaignsCLEX-5govCampaignsFall 1997 Cloud IOP ARMShortwave IOP

  16. ARM - Field Campaign - Fall 1997 UAV IOP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8LigovCampaignsCLEX-5govCampaignsFall 1997 Cloud IOP ARMShortwave

  17. Klamath Falls Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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

  18. Granite Falls Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting JumpGove County,Texas: EnergyOhio:Geothermal ProjectFalls

  19. DOE - Office of Legacy Management -- Falls

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTable ofArizonaBuffalo -Elk River Reactor -Texas Falls City,

  20. Twin Falls District | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri Global Energy LLC Place: Dallas, Texas2022Wind Farm JumpTwin Falls

  1. MIT Fall Career Fair | ornl.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9November 6, In this3,OfficeWITHMISR-DerivedFall

  2. Force-velocity relations for multiple molecular motor transportation

    E-Print Network [OSTI]

    Wang, Ziqing

    2009-01-01T23:59:59.000Z

    A transition rate model of cargo transportation by N effective molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multi-motor system can be derived from the force-velocity curve of single motor. Our work shows, in the case of low load, the velocity of multi-motor system can decrease or increase with increasing motor number, which is dependent on the single motor force-velocity curve. And most commonly, the velocity decreases. This gives a possible explanation to some recent experimental observations.

  3. Force-velocity relations for multiple-molecular-motor transport

    E-Print Network [OSTI]

    Ziqing Wang; Ming Li

    2009-10-01T23:59:59.000Z

    A transition rate model of cargo transport by $N$ molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multi-motor system can be derived from the force-velocity curve of single motor. Our work shows, in the case of low load, the velocity of multi-motor system can decrease or increase with increasing motor number, which is dependent on the single motor force-velocity curve. And most commonly, the velocity decreases. This gives a possible explanation to some recent

  4. Introduction The Smith Cloud is a high velocity cloud with a radial velocity near

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    .8 ­ 15.1 kpc (Wakker et al. 2008). Lockman et al. (2008) presented an H I survey of the cloud using the off and on spectra of each line to a single atmospheric template, which we then subtracted from velocities, Figure 2 shows ON­OFF spectra with no atmospheric template for this line. Like Bland-Hawthorn et

  5. About Synchronisation of Clocks in Free Fall Around a Central Body

    E-Print Network [OSTI]

    Francois Goy

    1997-07-02T23:59:59.000Z

    The conventional nature of synchronisation is discussed in inertial frames, where it is found that theories using different synchronisations are experimentally equivalent to special relativity. In contrary, in accelerated systems only a theory maintaining an absolute simultaneity is consistent with the natural behaviour of clocks. The principle of equivalence is discussed, and it is found that any synchronisation can be used locally in a freely falling frame. Whatever the choosen synchronisation, the first derivatives of the metric tensor disapear and a geodesic is locally a straight line. But it is shown that only a synchronisation maintaining an absolute simultaneity allows to define time consistently on circular orbits of a Schwarzschild metric. Key words: special and general relativity, synchronisation, one-way velocity of light, ether, principle of equivalence.

  6. Scaling of convective velocity in a vertically vibrated granular bed

    E-Print Network [OSTI]

    Tomoya M. Yamada; Hiroaki Katsuragi

    2014-05-30T23:59:59.000Z

    We experimentally study the velocity scaling of granular convection which is a possible mechanism of the regolith migration on the surface of small asteroids. In order to evaluate the contribution of granular convection to the regolith migration, the velocity of granular convection under the microgravity condition has to be revealed. Although it is hard to control the gravitational acceleration in laboratory experiments, scaling relations involving the gravitational effect can be evaluated by systematic experiments. Therefore, we perform such a systematic experiment of the vibration-induced granular convection. From the experimental data, a scaling form for the granular convective velocity is obtained. The obtained scaling form implies that the granular convective velocity can be decomposed into two characteristic velocity components: vibrational and gravitational velocities. In addition, the system size dependence is also scaled. According to the scaling form, the granular convective velocity $v$ depends on the gravitational acceleration $g$ as $v \\propto g^{0.97}$ when the normalized vibrational acceleration is fixed.

  7. Filament velocity scaling laws for warm ions

    SciTech Connect (OSTI)

    Manz, P. [Physik-Department E28, Technische Universität München, James-Franck-Str. 1, 85748 Garching (Germany) [Physik-Department E28, Technische Universität München, James-Franck-Str. 1, 85748 Garching (Germany); Max-Planck-Institut für Plasmaphysik, EURATOM Assoziation, Boltzmannstr. 2, 85748 Garching (Germany); Carralero, D.; Birkenmeier, G.; Müller, H. W.; Scott, B. D. [Max-Planck-Institut für Plasmaphysik, EURATOM Assoziation, Boltzmannstr. 2, 85748 Garching (Germany)] [Max-Planck-Institut für Plasmaphysik, EURATOM Assoziation, Boltzmannstr. 2, 85748 Garching (Germany); Müller, S. H. [Center for Momentum Transport and Flow Organization, University of California at San Diego, San Diego 92093 (United States)] [Center for Momentum Transport and Flow Organization, University of California at San Diego, San Diego 92093 (United States); Fuchert, G. [Insitut für Grenzflächenverfahrenstechnik und Plasmatechnologie, Universität Stuttgart, 70569 Stuttgart (Germany)] [Insitut für Grenzflächenverfahrenstechnik und Plasmatechnologie, Universität Stuttgart, 70569 Stuttgart (Germany); Stroth, U. [Max-Planck-Institut für Plasmaphysik, EURATOM Assoziation, Boltzmannstr. 2, 85748 Garching (Germany) [Max-Planck-Institut für Plasmaphysik, EURATOM Assoziation, Boltzmannstr. 2, 85748 Garching (Germany); Physik-Department E28, Technische Universität München, James-Franck-Str. 1, 85748 Garching (Germany)

    2013-10-15T23:59:59.000Z

    The dynamics of filaments or blobs in the scrape-off layer of magnetic fusion devices are studied by magnitude estimates of a comprehensive drift-interchange-Alfvén fluid model. The standard blob models are reproduced in the cold ion case. Even though usually neglected, in the scrape-off layer, the ion temperature can exceed the electron temperature by an order of magnitude. The ion pressure affects the dynamics of filaments amongst others by adding up to the interchange drive and the polarisation current. It is shown how both effects modify the scaling laws for filament velocity in dependence of its size. Simplifications for experimentally relevant limit regimes are given. These are the sheath dissipation, collisional, and electromagnetic regime.

  8. Transit Detection of Radial Velocity Planets

    E-Print Network [OSTI]

    Stephen R. Kane; Kaspar von Braun

    2008-06-30T23:59:59.000Z

    The orbital parameters of extra-solar planets have a significant impact on the probability that the planet will transit the host star. This was recently demonstrated by the transit detection of HD 17156b whose favourable eccentricity and argument of periastron dramatically increased its transit likelihood. We present a study which provides a quantitative analysis of how these two orbital parameters effect the geometric transit probability as a function of period. Further, we apply these results to known radial velocity planets and show that there are unexpectedly high transit probabilities for planets at relatively long periods. For a photometric monitoring campaign which aims to determine if the planet indeed transits, we calculate the significance of a null result and the subsequent constraints that may be applied to orbital parameters.

  9. Correlation of bubble rise velocity and volume

    SciTech Connect (OSTI)

    Burge, C.

    1991-12-31T23:59:59.000Z

    This project was conducted at Westinghouse`s Savannah River Laboratories (SRL). The goal of SRL is to make certain that the modifications on the reactor are safe for those working at the plant as well as the general public. One of the steps needed to insure safety is the knowledge of the occurrences that result from a plenum pipe breakage. When a plenum pipe breaks, two things occur: air is sucked into the pipe and is trapped in the cooling water; and water used to cool the fuel rods is lost. As a result of these occurrences, the water is slowed down by both the loss in water pressure and the upward force of air bubbles pushing against the downward force of the water. The project required the conducting of tests to find the bubble velocity in an annular ribbed pipe filled with stagnant water. This document discusses the methodology and results of this testing.

  10. Correlation of bubble rise velocity and volume

    SciTech Connect (OSTI)

    Burge, C.

    1991-01-01T23:59:59.000Z

    This project was conducted at Westinghouse's Savannah River Laboratories (SRL). The goal of SRL is to make certain that the modifications on the reactor are safe for those working at the plant as well as the general public. One of the steps needed to insure safety is the knowledge of the occurrences that result from a plenum pipe breakage. When a plenum pipe breaks, two things occur: air is sucked into the pipe and is trapped in the cooling water; and water used to cool the fuel rods is lost. As a result of these occurrences, the water is slowed down by both the loss in water pressure and the upward force of air bubbles pushing against the downward force of the water. The project required the conducting of tests to find the bubble velocity in an annular ribbed pipe filled with stagnant water. This document discusses the methodology and results of this testing.

  11. Single-mode fiber, velocity interferometry

    SciTech Connect (OSTI)

    Krauter, K. G.; Jacobson, G. F.; Patterson, J. R.; Nguyen, J. H.; Ambrose, W. P. [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore California 94551 (United States)

    2011-04-15T23:59:59.000Z

    In this paper, we describe a velocity interferometer system based entirely on single-mode fiber optics. This paper includes a description of principles used in developing the single-mode velocity interferometry system (SMV). The SMV design is based on polarization-insensitive components. Polarization adjusters are included to eliminate the effects of residual birefringence and polarization dependent losses in the interferometers. Characterization measurements and calibration methods needed for data analysis and a method of data analysis are described. Calibration is performed directly using tunable lasers. During development, we demonstrated its operation using exploding-foil bridge-wire fliers up to 200 m/s. In a final test, we demonstrated the SMV in a gas gun experiment up to 1.2 km/sec. As a basis for comparison in the gas gun experiment, we used another velocimetry technique that is also based on single-mode fiber optics: photonic Doppler velocimetry (PDV). For the gas gun experiment, we split the light returned from a single target spot and performed a direct comparison of the homodyne (SMV) and heterodyne (PDV) techniques concurrently. The two techniques had a negligible mean difference and a 1.5% standard deviation in the one-dimensional shock zone. Within one interferometer delay time after a sudden Doppler shift, a SMV unencumbered by multimode-fiber dispersion exhibits two color beats. These beats have the same period as PDV beats--this interference occurs between the ''recently'' shifted and ''formerly unshifted'' paths within the interferometer. We believe that recognizing this identity between homodyne and heterodyne beats is novel in the shock-physics field. SMV includes the conveniences of optical fiber, while removing the time resolution limitations associated with the multimode delivery fiber.

  12. Redd Site Selection and Spawning Habitat Use by Fall Chinook Salmon, Hanford Reach, Columbia River : Final Report 1995 - 1998.

    SciTech Connect (OSTI)

    Geist, David R.

    1999-05-01T23:59:59.000Z

    This report summarizes results of research activities conducted from 1995 through 1998 on identifying the spawning habitat requirements of fall chinook salmon (Oncorhynchus tshawytscha) in the Hanford Reach of the Columbia River. The project investigated whether traditional spawning habitat models could be improved in order to make better predictions of available habitat for fall chinook salmon in the Snake River. Results suggest models could be improved if they used spawning area-specific, rather than river-specific, spawning characteristics; incorporated hyporheic discharge measurements; and gave further consideration to the geomorphic features that are present in the unconstrained segments of large alluvial rivers. Ultimately the recovery of endangered fall chinook salmon will depend on how well we are able to recreate the characteristics once common in alluvial floodplains of large rivers. The results from this research can be used to better define the relationship between these physical habitat characteristics and fall chinook salmon spawning site selection, and provide more efficient use of limited recovery resources. This report is divided into four chapters which were presented in the author's doctoral dissertation which he completed through the Department of Fisheries and Wildlife at Oregon State University. Each of the chapters has been published in peer reviewed journals or is currently under review. Chapter one is a conceptual spawning habitat model that describes how geomorphic features of river channels create hydraulic processes, including hyporheic flows, that influence where salmon spawn in unconstrained reaches of large mainstem alluvial rivers. Chapter two describes the comparison of the physical factors associated with fall chinook salmon redd clusters located at two sites within the Reach. Spatial point pattern analysis of redds showed that redd clusters averaged approximately 10 hectares in area and their locations were consistent from year to year. The tendency to spawn in clusters suggests fall chinook salmon's use of spawning habitat is highly selective. Hydraulic characteristics of the redd clusters were significantly different than the habitat surrounding them. Velocity and lateral slope of the river bottom were the most important habitat variables in predicting redd site selection. While these variables explained a large proportion of the variance in redd site selection (86 to 96%), some unmeasured factors still accounted for a small percentage of actual spawning site selection. Chapter three describes the results from an investigation into the hyporheic characteristics of the two spawning areas studied in chapter two. This investigation showed that the magnitude and chemical characteristics of hyporheic discharge were different between and within two spawning areas. Apparently, fall chinook salmon used chemical and physical cues from the discharge to locate spawning areas. Finally, chapter four describes a unique method that was developed to install piezometers into the cobble bed of the Columbia River.

  13. Fall 2013 1,660 1,222 29,466 32,348 Fall 2012 1,781 1,107 29,707 32,595

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    Year Potomac State WVU- Tech WVU- Main All WVU Fall 2013 1,660 1,222 29,466 32,348 Fall 2012 1,781 1,107 29,707 32,595 Fall 2011 1,800 1,316 29,617 32,733 Fall 2010 1,836 1,209 29,306 32,351 Fall 2009 1,810 1,244 28,898 31,952 Fall 2008 1,582 1,224 28,840 31,646 Fall 2007 1,608 1,450 28,113 31

  14. ENV 6105 Page 1 of 6 Fall 2011 Air Pollution

    E-Print Network [OSTI]

    Stuart, Amy L.

    ENV 6105 Page 1 of 6 Fall 2011 Syllabus Air Pollution ENV 6105.901 (ref# 90504) Fall 2011 Course Description: A study of air pollution. Emphasis is given to principles underlying our understanding of ambient air pollution, its sources, its effects, and mechanisms for its management. Credit Hours and Work

  15. MMWCMathers Museum of World Cultures Fall 2013 No. 2

    E-Print Network [OSTI]

    Indiana University

    MMWCMathers Museum of World Cultures Fall 2013 No. 2 Fall programs and events announced pg. 3 pg. 5 pg. 8 MMWC selected as China/US partner IQ-Wall used for research, teaching Student, Museum travel at the Mathers Museum of World Cultures. I could just dive in and start de- scribing some of my favorite programs

  16. Page 1 of 1 GG 301 Mineralogy Fall 2009

    E-Print Network [OSTI]

    Hammer, Julia Eve

    Page 1 of 1 GG 301 Mineralogy Fall 2009 Course Description and Syllabus Welcome to Mineralogy on mineral composition, the fourth presents optical mineralogy, the fifth introduces us to major rock some of the analytical tools of modern mineralogy. Course Information Credits: 4 Semester: Fall 2009

  17. PHS 650, Fall 2011 1 PREVENTION OF OVERWEIGHT AND OBESITY

    E-Print Network [OSTI]

    Sheridan, Jennifer

    PHS 650, Fall 2011 1 PHS 650 PREVENTION OF OVERWEIGHT AND OBESITY Course Syllabus Fall 2011 Credits knowledge to develop, implement, and evaluate obesity prevention interventions. This course will emphasize pediatric obesity prevention with a focus on nutrition and physical activity health behaviors

  18. Chemistry B.S. Fall--First Year

    E-Print Network [OSTI]

    Gering, Jon C.

    Chemistry B.S. Fall--First Year · CHEM 130 Chemical Principles I* · CHEM 145 Freshman Seminar · CHEM 222 Intro to Quant Analysis · CHEM 245 Sophomore Seminar · CHEM 329 Organic Chemistry I · MATH 264 Calculus III · LSP coursework Fall--Third Year · CHEM 345 Junior Seminar · CHEM 323/324 Physical Chemistry

  19. (BSET) -FIRE SAFETY ENGINEERING TECHNOLOGY CURRICULUM Effective Fall 2003

    E-Print Network [OSTI]

    Raja, Anita

    (BSET) - FIRE SAFETY ENGINEERING TECHNOLOGY CURRICULUM Effective Fall 2003 Updated - Fall 2009csd: In addition to University and College of Engineering requirements, an AAS transfer student who is admitted Advisor: Notes Engineering Economics Building Fire Safety Risk Mgmt. for Emerg. Services Professional

  20. On the velocity-strengthening behavior of dry friction

    E-Print Network [OSTI]

    Yohai Bar-Sinai; Robert Spatschek; Efim A. Brener; Eran Bouchbinder

    2014-04-15T23:59:59.000Z

    The onset of frictional instabilities, e.g. earthquakes nucleation, is intimately related to velocity-weakening friction, in which the frictional resistance of interfaces decreases with increasing slip velocity. While this frictional response has been studied extensively, less attention has been given to steady-state velocity-strengthening friction, in spite of its potential importance for various aspects of frictional phenomena such as the propagation speed of interfacial rupture fronts and the amount of stored energy released by them. In this note we suggest that a crossover from steady-state velocity-weakening friction at small slip velocities to steady-state velocity-strengthening friction at higher velocities might be a generic feature of dry friction. We further argue that while thermally activated rheology naturally gives rise to logarithmic steady-state velocity-strengthening friction, a crossover to stronger-than-logarithmic strengthening might take place at higher slip velocities, possibly accompanied by a change in the dominant dissipation mechanism. We sketch a few physical mechanisms that may account for the crossover to stronger-than-logarithmic steady-state velocity-strengthening and compile a rather extensive set of experimental data available in the literature, lending support to these ideas.

  1. Horizontal velocities in the central and eastern United States from GPS surveys during the 1987-1996 interval

    SciTech Connect (OSTI)

    Snay, R.A.; Strange, W.E.

    1997-12-01T23:59:59.000Z

    The National Geodetic Survey and the Nuclear Regulatory Commission jointly organized GPS surveys in 1987, 1990, 1993, and 1996 to search for crustal deformation in the central and eastern United States (east of longitude 108{degrees}W). We have analyzed the data of these four surveys in combination with VLBI data observed during the 1979-1995 interval and GPS data for 22 additional surveys observed during the 1990-1996 interval. These latter GPS surveys served to establish accurately positioned geodetic marks in various states. Accordingly, we have computed horizontal velocities for 64 GPS sites and 12 VLBI sites relative to a reference frame for which the interior of the North American plate is considered fixed on average. None of our derived velocities exceeds 6 mm/yr in magnitude. Moreover, the derived velocity at each GPS site is statistically zero at the 95% confidence level except for the site BOLTON in central Ohio and the site BEARTOWN in southeastern Pennsylvania. However, as statistical theory would allow approximately 5% of the 64 GPS sites to fall our zero-velocity hypothesis, we are uncertain whether or not these estimated velocities for BOLTON and BEARTOWN reflect actual motion relative to the North American plate. We also computed horizontal strain rates for the cells formed by a 1{degrees} by 1{degrees} grid spanning the central and eastern United States. Corresponding shearing rates are everywhere less than 60 nanoradians/yr in magnitude, and no shearing rate differs statistically from zero at the 95% confidence level except for a grid cell near BEARTOWN whose rate is 57 {+-} 26 nanoradians/yr. Also corresponding areal dilatation rates are everywhere less than 40 nanostrain/yr in magnitude, and no dilatation rate differs statistically from zero at the 95% confidence level.

  2. BRYANT FALL 2010 ABRYANT FALL 2010 A A BRYANT UNIVERSITY R E S OURCE FOR P ROFESSIONAL SUCCESS

    E-Print Network [OSTI]

    Blais, Brian

    BRYANT FALL 2010 ABRYANT FALL 2010 A A BRYANT UNIVERSITY R E S OURCE FOR P ROFESSIONAL SUCCESS E X AT HOME IN THE WORLD Bryant is educating students to be intrepid explorers in a world of unlimited global's fastest-growing programs. 14 DOING BUSINESS IN THE GLOBAL ARENA Bryant alumni distinguish themselves

  3. Time-resolved particle velocity measurements at impact velocities of 10 km/s

    SciTech Connect (OSTI)

    Furnish, M.D.; Chhabildas, L.C.; Reinhart, W.D.

    1998-08-01T23:59:59.000Z

    Hypervelocity launch capabilities (9--16 km/s) with macroscopic plates have become available in recent years. It is now feasible to conduct instrumented plane-wave tests using this capability. Successfully conducting such tests requires a planar launch and impact at hypervelocities, appropriate triggering for recording systems, and time-resolved measurements of motion or stress at a particular point or set of points within the target or projectile during impact. The authors have conducted the first time-resolved wave-profile experiments using velocity interferometric techniques at impact velocities of 10 km/s. These measurements show that aluminum continues to exhibit normal release behavior to 161 GPa shock pressure, with complete loss of strength of the shocked state. These experiments have allowed a determination of shock-wave window transparency in conditions produced by a hypervelocity impact. In particular, lithium fluoride appears to lose transparency at a shock stress of 200 GPa; this appears to be the upper limit for conventional wave profile measurements using velocity interferometric techniques.

  4. Summary of the engineering assessment of inactive uranium mill tailings: Falls City site, Falls City, Texas

    SciTech Connect (OSTI)

    none,

    1981-10-01T23:59:59.000Z

    Ford, Bacon and Davis Utah Inc. has reevaluated the Falls City site in order to update the December 1977 engineering assessment of the problems resulting from the existence of radioactive uranum mill tailings at Falls City, Texas. This engineering assessment has included the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and radiation exposures of individuals and nearby populations, the investigations of site hydrolgy and meteorology, and the evaluation and costing of alternative corrective actions. Radon gas released from the 2.5 million tons of tailings at the Falls City site constitutes the most significant environmental impact, although windblown tailings and external gamma radiation also are factors. The four alternative actions presented in this engineering assessment range from millsite decontamination with the addition of 3 m of stabilization cover material, to removal of the tailings to remote disposal sites and decontamination of the tailings site. Cost estimates for the four options range from about $21,700,000 for stabilization in place, to about $35,100,000 for disposal at a distance of about 15 mi. Three principal alternatives for the reprocessing of the Falls City tailings were examined: heap leaching; treatment at an existing mill; reprocessing at a new conventional mill constructed for tailings reprocessing. The tailings piles are presently being rewashed for uranium recovery by Solution Engineering, Inc. The cost for further reprocessing would be about $250/lb of U/sub 3/O/sub 8/. The spot market price for uranium was $25/lb early in 1981. Therefore, reprocessing the tailings for uranium recovery does not appear to be economically attractive for the foreseeable future.

  5. Dr. Campbell's Bio111 Exam #1 Fall 2001 Fall 2001 Biology 111 Exam #1 -Cellular Communications

    E-Print Network [OSTI]

    Campbell, A. Malcolm

    this exam take you to complete (excluding typing)? #12;Dr. Campbell's Bio111 Exam #1 ­ Fall 2001 2 Lab/v IDH if your stock solutions are 28.8 mM NADP+ , 500 mM isocistrate and 100 mM IDH (to be considered 100% IDH stock solution). 10 mL NADP stock + 20 mL isocitrate + 14 mL IDH + water to a final volume

  6. Out-of-plane ultrasonic velocity measurement

    DOE Patents [OSTI]

    Hall, M.S.; Brodeur, P.H.; Jackson, T.G.

    1998-07-14T23:59:59.000Z

    A method for improving the accuracy of measuring the velocity and time of flight of ultrasonic signals through moving web-like materials such as paper, paperboard and the like, includes a pair of ultrasonic transducers disposed on opposing sides of a moving web-like material. In order to provide acoustical coupling between the transducers and the web-like material, the transducers are disposed in fluid-filled wheels. Errors due to variances in the wheel thicknesses about their circumference which can affect time of flight measurements and ultimately the mechanical property being tested are compensated by averaging the ultrasonic signals for a predetermined number of revolutions. The invention further includes a method for compensating for errors resulting from the digitization of the ultrasonic signals. More particularly, the invention includes a method for eliminating errors known as trigger jitter inherent with digitizing oscilloscopes used to digitize the signals for manipulation by a digital computer. In particular, rather than cross-correlate ultrasonic signals taken during different sample periods as is known in the art in order to determine the time of flight of the ultrasonic signal through the moving web, a pulse echo box is provided to enable cross-correlation of predetermined transmitted ultrasonic signals with predetermined reflected ultrasonic or echo signals during the sample period. By cross-correlating ultrasonic signals in the same sample period, the error associated with trigger jitter is eliminated. 20 figs.

  7. True Masses of Radial-Velocity Exoplanets

    E-Print Network [OSTI]

    Brown, Robert A

    2015-01-01T23:59:59.000Z

    We explore the science power of space telescopes used to estimate the true masses of known radial-velocity exoplanets by means of astrometry on direct images. We translate a desired mass accuracy (+/10% in our example) into a minimum goal for the signal-to-noise ratio, which implies a minimum exposure time. When the planet is near a node, the mass measurement becomes difficult if not impossible, because the apparent separation becomes decoupled from the inclination angle of the orbit. The combination of this nodal effect with considerations of solar and anti-solar pointing restrictions, photometric and obscurational completeness, and image blurring due to orbital motion, severely limits the observing opportunities, often to only brief intervals in a five-year mission. We compare the science power of four missions, two with external star shades, EXO-S and WFIRST-S, and two with internal coronagraphs, EXO-C and WFIRST-C. The star shades out-perform the coronagraph in this science program by about a factor of th...

  8. Out-of-plane ultrasonic velocity measurement

    DOE Patents [OSTI]

    Hall, Maclin S. (Marietta, GA); Brodeur, Pierre H. (Smyrna, GA); Jackson, Theodore G. (Atlanta, GA)

    1998-01-01T23:59:59.000Z

    A method for improving the accuracy of measuring the velocity and time of flight of ultrasonic signals through moving web-like materials such as paper, paperboard and the like, includes a pair of ultrasonic transducers disposed on opposing sides of a moving web-like material. In order to provide acoustical coupling between the transducers and the web-like material, the transducers are disposed in fluid-filled wheels. Errors due to variances in the wheel thicknesses about their circumference which can affect time of flight measurements and ultimately the mechanical property being tested are compensated by averaging the ultrasonic signals for a predetermined number of revolutions. The invention further includes a method for compensating for errors resulting from the digitization of the ultrasonic signals. More particularly, the invention includes a method for eliminating errors known as trigger jitter inherent with digitizing oscilloscopes used to digitize the signals for manipulation by a digital computer. In particular, rather than cross-correlate ultrasonic signals taken during different sample periods as is known in the art in order to determine the time of flight of the ultrasonic signal through the moving web, a pulse echo box is provided to enable cross-correlation of predetermined transmitted ultrasonic signals with predetermined reflected ultrasonic or echo signals during the sample period. By cross-correlating ultrasonic signals in the same sample period, the error associated with trigger jitter is eliminated.

  9. Fall 2004 Math 151 Exam 2 Review Exercises

    E-Print Network [OSTI]

    Aguiar, Marcelo

    (velocity), and accel- eration vector to the curve at t = 3 . c.) Find parametric equations for the tangent represents the position of a particle at time t, find the angle between the velocity and the acceleration

  10. Cryogenic Testing of High-Velocity Spoke Cavities

    SciTech Connect (OSTI)

    Hopper, Christopher S. [Old Dominion University; Delayen, Jean R. [Old Dominion University; Park, HyeKyoung [JLAB

    2014-12-01T23:59:59.000Z

    Spoke-loaded cavities are being investigated for the high-velocity regime. The relative compactness at low-frequency makes them attractive for applications requiring, or benefiting from, 4 K operation. Additionally, the large velocity acceptance makes them good candidates for the acceleration of high-velocity protons and ions. Here we present the results of cryogenic testing of a 325 MHz, ?0= 0.82 single-spoke cavity and a 500 MHz, ?0 = 1 double-spoke cavity.

  11. Limiting velocities as running parameters and superluminal neutrinos

    E-Print Network [OSTI]

    Mohamed M. Anber; John F. Donoghue

    2011-10-01T23:59:59.000Z

    In the context of theories where particles can have different limiting velocities, we review the running of particle speeds towards a common limiting velocity at low energy. Motivated by the recent OPERA experimental results, we describe a model where the neutrinos would deviate from the common velocity by more than do other particles in the theory, because their running is slower due to weaker interactions.

  12. acoustic wave velocity: Topics by E-print Network

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

    the offered analytical method the determinant relation for a phase velocities of elastic waves for an arbitrary propagation directions in a piezoelectric crystal are received. The...

  13. aggregate sound velocities: Topics by E-print Network

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

    an acoustic loop filter Physics Websites Summary: observation of negative group velocity propagation of sound waves through an asymmetric loop filterSound beyond the speed of...

  14. Crust and Upper Mantle P Wave Velocity Structure Beneath Valles...

    Open Energy Info (EERE)

    Crust and Upper Mantle P Wave Velocity Structure Beneath Valles Caldera, New Mexico- Results from the Jemez Teleseismic Tomography Experiment Jump to: navigation, search OpenEI...

  15. adiabatic burning velocity: Topics by E-print Network

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

    Sciences Websites Summary: burning velocities under conditions for which the net heat loss of the flame is zero. Very similar values, France 2 IFP Energies nouvelles, 1 et...

  16. Modified definition of group velocity and electromagnetic energy conservation equation

    E-Print Network [OSTI]

    Changbiao Wang

    2015-01-19T23:59:59.000Z

    The classical definition of group velocity has two flaws: (a) the group velocity can be greater than the phase velocity in a non-dispersive, lossless, non-conducting, anisotropic uniform medium; (b) the definition is not consistent with the principle of relativity for a plane wave in a moving isotropic uniform medium. To remove the flaws, a modified definition is proposed. A criterion is set up to identify the justification of group velocity definition. A "superluminal power flow" is constructed to show that the electromagnetic energy conservation equation cannot uniquely define the power flow if the principle of Fermat is not taken into account.

  17. USING MICRO-SEISMICITY AND SEISMIC VELOCITIES TO MAP SUBSURFACE...

    Open Energy Info (EERE)

    GEOTHERMAL FIELD, CALIFORNIA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: USING MICRO-SEISMICITY AND SEISMIC VELOCITIES TO MAP...

  18. Using Micro-Seismicity and Seismic Velocities to Map Subsurface...

    Open Energy Info (EERE)

    Geothermal Field California Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Using Micro-Seismicity and Seismic Velocities to Map Subsurface...

  19. A novel photonic Doppler velocimetry for transverse velocity measurement

    SciTech Connect (OSTI)

    Chen Guanghua; Wang Detian; Liu Jun; Meng Jianhua; Liu Shouxian; Yang Qingguo [Institute of Fluid Physics, CAEP, P.O. Box 919-109, Mianyang, Sichuan 621900 (China)

    2013-01-15T23:59:59.000Z

    A fiber interferometry for transverse velocity measurement has been developed. This diagnostic is similar to photonic Doppler velocimetry in the way in which laser propagates and couples. The interferometer mainly consists of a fiber coupler, an emitting probe, and two receiving probes. A pair of scattered laser beams mix in the coupler and generates fringes with frequency proportional to transverse velocity. Measurement of transverse velocity is independent of longitudinal velocity. The feasibility of the technique has been verified by rotating wheel experiment and shock loading experiment.

  20. Determination of Surface Exciton Energies by Velocity Resolved...

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

    Exciton Energies by Velocity Resolved Atomic Desorption. Abstract: We have developed a new method for determining surface exciton band energies in alkali halides based on...

  1. Line bisectors and radial velocity jitter from SARG spectra

    E-Print Network [OSTI]

    A. F. Martinez Fiorenzano; R. G. Gratton; S. Desidera; R. Cosentino; M. Endl

    2005-08-03T23:59:59.000Z

    We present an analysis of spectral line bisector variations for a few stars observed in the SARG high precision radial velocity planet survey, and discuss their relationship with differential radial velocities. The spectra we consider are the same used for determining radial velocities. The iodine cell lines employed in the measurement of radial velocities were removed before bisector analysis. The line bisectors were then computed from average absorption profiles obtained by cross correlation of the stellar spectra with a mask made from suitable lines of a solar catalog. Bisector velocity spans were then determined: errors in these quantities compare well with theoretical expectations based on resolution, S/N and line shape. The plot of bisector velocity span against radial velocity was studied to search for correlations between line asymmetries and radial velocity variations. A correlation was seen for HD 166435 due to stellar activity, and for HD 8071B due to spectral contamination by the companion. No correlation was seen for 51 Peg and rho CrB, stars hosting planets. We conclude that this technique may be useful to separate radial velocity variations due to barycenter motion from spurious signals in spectra acquired with the iodine cell.

  2. anisotropic electron velocity: Topics by E-print Network

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

    A simple model reflecting Cerveny, Vlastislav 8 Anisotropic velocity distributions in 3D dissipative optical lattices Quantum Physics (arXiv) Summary: We present a direct...

  3. air stream velocities: Topics by E-print Network

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

    the early universe, substantial relative "stream" velocities between the gas and dark matter arise due to radiation pressure and persist after recombination. To asses the impact...

  4. Note: A helical velocity selector for continuous molecular beams

    SciTech Connect (OSTI)

    Szewc, Carola; Collier, James D.; Ulbricht, Hendrik [School of Physics and Astronomy, University of Southampton, Highfield, SO17 1BJ (United Kingdom)

    2010-10-15T23:59:59.000Z

    We report on a modern realization of the classic helical velocity selector for gas phase particle beams. The device operates stably under high vacuum conditions at rotational frequencies limited only by commercial dc motor capabilities. Tuning the rotational frequency allows selective scanning over a broad velocity band. The width of the selected velocity distributions at full-width-half-maximum is as narrow as a few percent of the selected mean velocity and independent of the rotational speed of the selector. The selector generates low vibrational noise amplitudes comparable to mechanically damped state-of-the-art turbo-molecular pumps and is therefore compatible with vibration sensitive experiments like molecule interferometry.

  5. Nonlinear Landau damping and formation of Bernstein-Greene-Kruskal structures for plasmas with q-nonextensive velocity distributions

    SciTech Connect (OSTI)

    Raghunathan, M. [Indian Institute of Science Education and Research (IISER), Pune 411021 (India); Ganesh, R. [Institute for Plasma Research, Gandhinagar 382428 (India)

    2013-03-15T23:59:59.000Z

    In the past, long-time evolution of an initial perturbation in collisionless Maxwellian plasma (q = 1) has been simulated numerically. The controversy over the nonlinear fate of such electrostatic perturbations was resolved by Manfredi [Phys. Rev. Lett. 79, 2815-2818 (1997)] using long-time simulations up to t=1600{omega}{sub p}{sup -1}. The oscillations were found to continue indefinitely leading to Bernstein-Greene-Kruskal (BGK)-like phase-space vortices (from here on referred as 'BGK structures'). Using a newly developed, high resolution 1D Vlasov-Poisson solver based on piecewise-parabolic method (PPM) advection scheme, we investigate the nonlinear Landau damping in 1D plasma described by toy q-distributions for long times, up to t=3000{omega}{sub p}{sup -1}. We show that BGK structures are found only for a certain range of q-values around q = 1. Beyond this window, for the generic parameters, no BGK structures were observed. We observe that for values of q<1 where velocity distributions have long tails, strong Landau damping inhibits the formation of BGK structures. On the other hand, for q>1 where distribution has a sharp fall in velocity, the formation of BGK structures is rendered difficult due to high wave number damping imposed by the steep velocity profile, which had not been previously reported. Wherever relevant, we compare our results with past work.

  6. Fundamental limitations to tests of the universality of free fall by dropping atoms

    E-Print Network [OSTI]

    Nobili, Anna M

    2015-01-01T23:59:59.000Z

    Tests of the universality of free fall and the weak equivalence principle probe the foundations of General Relativity. Evidence of a violation may lead to the discovery of a new force. The best torsion balance experiments have ruled it out to 10^-13[1]. Cold-atom tests[2-5] have reached 10^-7 and promise to do 7 to 10 orders of magnitude better[6-10] on ground or in space. As mass-dropping experiments[2-4] in a non uniform gravitational field they are sensitive to initial conditions. Errors in the relative position and velocity of the atom clouds at release give rise to a systematic effect which mimics a violation, and these offsets are never measured concurrently with the drop. At the current 10^-7 level they are not an issue. Here we show that when aiming at 2x10^-15 as in[9-10], a fundamental limitation arises. Heisenberg's principle does not allow the centre of mass of free atom clouds to be confined at will in both position and velocity space. The required confinement would be short of the position-momen...

  7. Compact, Isolated High-Velocity Clouds

    E-Print Network [OSTI]

    W. B. Burton; R. Braun; V. de Heij

    2002-06-20T23:59:59.000Z

    We consider here the class of compact, isolated, high-velocity HI clouds, CHVCs, which are sharply bounded in angular extent down to a limiting column density of 1.5x10^18 cm^-2. We describe our automated search algorithm and it's application to the LDS north of dec= -28 deg. and the HIPASS data south of dec=0, resulting in an all--sky catalog numbering 246 CHVCs. We argue that these objects are more likely to represent a single phenomenon in a similar evolutionary state than would a sample which included any of the major HVC complexes. Five principal observables are defined for the CHVC population: (1) the spatial deployment of the objects on the sky, (2) the kinematic distribution, (3) the number distribution of observed HI column densities, (4) the number distribution of angular sizes, and (5) the number distribution of line widths. We show that the spatial and kinematic deployments of the ensemble of CHVCs contain various clues regarding their characteristic distance. These clues are not compatible with a location of the ensemble within the Galaxy proper. The deployments resemble in several regards those of the Local Group galaxies. We describe a model testing the hypothesis that the CHVCs are a Local Group population. The agreement of the model with the data is judged by extracting the observables from simulations, in a manner consistent with the sensitivities of the observations and explicitly taking account of Galactic obscuration. We show that models in which the CHVCs are the HI counterparts of dark-matter halos evolving in the Local Group potential provide a good match to the observables, if account is taken of tidal and ram--pressure disruption, the consequences of obscuration due to Galactic HI and of differing sensitivities and selection effects pertaining to the surveys.

  8. Nonlinear peculiar-velocity analysis and PCA

    SciTech Connect (OSTI)

    Dekel, A. [and others

    2001-02-20T23:59:59.000Z

    We allow for nonlinear effects in the likelihood analysis of peculiar velocities, and obtain {approximately}35%-lower values for the cosmological density parameter and for the amplitude of mass-density fluctuations. The power spectrum in the linear regime is assumed to be of the flat {Lambda}CDM model (h = 0:65, n = 1) with only {Omega}{sub m} free. Since the likelihood is driven by the nonlinear regime, we break the power spectrum at k{sub b} {approximately} 0.2 (h{sup {minus}1} Mpc){sup {minus}1} and fit a two-parameter power-law at k > k{sub b} . This allows for an unbiased fit in the linear regime. Tests using improved mock catalogs demonstrate a reduced bias and a better fit. We find for the Mark III and SFI data {Omega}{sub m} = 0.35 {+-} 0.09 with {sigma}{sub 8}{Omega}P{sub m}{sup 0.6} = 0.55 {+-} 0.10 (90% errors). When allowing deviations from {Lambda}CDM, we find an indication for a wiggle in the power spectrum in the form of an excess near k {approximately} 0.05 and a deficiency at k {approximately} 0.1 (h{sup {minus}1} Mpc){sup {minus}1}--a cold flow which may be related to a feature indicated from redshift surveys and the second peak in the CMB anisotropy. A {chi}{sup 2} test applied to principal modes demonstrates that the nonlinear procedure improves the goodness of fit. The Principal Component Analysis (PCA) helps identifying spatial features of the data and fine-tuning the theoretical and error models. We address the potential for optimal data compression using PCA.

  9. VELOCITY MEASUREMENTS FOR A SOLAR ACTIVE REGION FAN LOOP FROM HINODE/EIS OBSERVATIONS

    SciTech Connect (OSTI)

    Young, P. R. [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); O'Dwyer, B.; Mason, H. E. [Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2012-01-01T23:59:59.000Z

    The velocity pattern of a fan loop structure within a solar active region over the temperature range 0.15-1.5 MK is derived using data from the EUV Imaging Spectrometer (EIS) on board the Hinode satellite. The loop is aligned toward the observer's line of sight and shows downflows (redshifts) of around 15 km s{sup -1} up to a temperature of 0.8 MK, but for temperatures of 1.0 MK and above the measured velocity shifts are consistent with no net flow. This velocity result applies over a projected spatial distance of 9 Mm and demonstrates that the cooler, redshifted plasma is physically disconnected from the hotter, stationary plasma. A scenario in which the fan loops consist of at least two groups of 'strands'-one cooler and downflowing, the other hotter and stationary-is suggested. The cooler strands may represent a later evolutionary stage of the hotter strands. A density diagnostic of Mg VII was used to show that the electron density at around 0.8 MK falls from 3.2 Multiplication-Sign 10{sup 9} cm{sup -3} at the loop base, to 5.0 Multiplication-Sign 10{sup 8} cm{sup -3} at a projected height of 15 Mm. A filling factor of 0.2 is found at temperatures close to the formation temperature of Mg VII (0.8 MK), confirming that the cooler, downflowing plasma occupies only a fraction of the apparent loop volume. The fan loop is rooted within a so-called outflow region that displays low intensity and blueshifts of up to 25 km s{sup -1} in Fe XII {lambda}195.12 (formed at 1.5 MK), in contrast to the loop's redshifts of 15 km s{sup -1} at 0.8 MK. A new technique for obtaining an absolute wavelength calibration for the EIS instrument is presented and an instrumental effect, possibly related to a distorted point-spread function, that affects velocity measurements is identified.

  10. Hydrocarbon saturation determination using acoustic velocities obtained through casing

    DOE Patents [OSTI]

    Moos, Daniel (Houston, TX)

    2010-03-09T23:59:59.000Z

    Compressional and shear velocities of earth formations are measured through casing. The determined compressional and shear velocities are used in a two component mixing model to provides improved quantitative values for the solid, the dry frame, and the pore compressibility. These are used in determination of hydrocarbon saturation.

  11. Measurements of Laminar Flame Velocity for Components of Natural Gas

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    flame velocity of components of natural gas, methane, ethane, propane, and nbutane as well as of binary% by volume (1). The laminar flame velocities of methane/air, ethane/air, and propane/air mixtures have on a plenum chamber with the radial temperature distribution measurement made by a series of thermocouples

  12. A laser Doppler method for noninvasive measurement of flow velocity

    SciTech Connect (OSTI)

    Biggs, G.L.

    1986-11-25T23:59:59.000Z

    Laser Doppler velocimetry is a powerful optical technique for noninvasively obtaining experimental flow-velocity data. This paper describes the principle of operation and various optical configurations of the laser Doppler velocimeter. As a sample application, we describe an experimental apparatus for measuring the velocity flow field around a cylinder, and give our experimental results.

  13. A comparison of light and velocity variations in Semiregular variables

    E-Print Network [OSTI]

    T. Lebzelter; L. L. Kiss; K. H. Hinkle

    2000-09-21T23:59:59.000Z

    NIR velocity variations are compared with simultaneous visual light curves for a sample of late-type semiregular variables (SRV). Precise radial velocity measurements are also presented for the SRV V450 Aql. Our aim is to investigate the nature of the irregular light changes found in these variables. Light and velocity variations are correlated in all stars of our sample. Based on these results we discuss several possibilities to explain the observed behavior. We find that pulsation is responsible for large amplitude variations. In a recent paper Lebzelter (1999) invoked large convective cells to understand observed velocity variations. This possibility is discussed with respect to the observed correlation between light and velocity changes. In the light of these results we investigate the origin of the semiregular variations.

  14. Precision Measuring of Velocities via the Relativistic Doppler Effect

    E-Print Network [OSTI]

    Leonid M. Ozernoy

    1997-12-26T23:59:59.000Z

    Just as the ordinary Doppler effect serves as a tool to measure radial velocities of celestial objects, so can the relativistic Doppler effect be implemented to measure a combination of radial and transverse velocities by using recent improvements in observing techniques. A key element that makes a further use of this combination feasible is the periodicity in changes of the orbital velocity direction for the source. Two cases are considered: (i) a binary star; and (ii) a solitary star with the planetary companion. It is shown that, in case (i), several precision Doppler measurements employing the gas absorption cell technique would determine both the total orbital velocity and the inclination angle of the binary orbit disentangled from the peculiar velocity of the system. The necessary condition for that is the measured, at least with a modest precision, proper motion and distance to the system.

  15. Precision Measuring of Velocities via the Relativistic Doppler Effect

    E-Print Network [OSTI]

    Ozernoy, L M

    1997-01-01T23:59:59.000Z

    Just as the ordinary Doppler effect serves as a tool to measure radial velocities of celestial objects, so can the relativistic Doppler effect be implemented to measure a combination of radial and transverse velocities by using recent improvements in observing techniques. A key element that makes a further use of this combination feasible is the periodicity in changes of the orbital velocity direction for the source. Two cases are considered: (i) a binary star; and (ii) a solitary star with the planetary companion. It is shown that, in case (i), several precision Doppler measurements employing the gas absorption cell technique would determine both the total orbital velocity and the inclination angle of the binary orbit disentangled from the peculiar velocity of the system. The necessary condition for that is the measured, at least with a modest precision, proper motion and distance to the system.

  16. Discrimination of porosity and fluid saturation using seismic velocity analysis

    DOE Patents [OSTI]

    Berryman, James G. (Danville, CA)

    2001-01-01T23:59:59.000Z

    The method of the invention is employed for determining the state of saturation in a subterranean formation using only seismic velocity measurements (e.g., shear and compressional wave velocity data). Seismic velocity data collected from a region of the formation of like solid material properties can provide relatively accurate partial saturation data derived from a well-defined triangle plotted in a (.rho./.mu., .lambda./.mu.)-plane. When the seismic velocity data are collected over a large region of a formation having both like and unlike materials, the method first distinguishes the like materials by initially plotting the seismic velocity data in a (.rho./.lambda., .mu./.lambda.)-plane to determine regions of the formation having like solid material properties and porosity.

  17. Math 514: Applied Mathematics I Course Information and Syllabus Fall 2011

    E-Print Network [OSTI]

    Math 514: Applied Mathematics I Course Information and Syllabus ­ Fall 2011 Instructor: Prof. Jon M

  18. Term: Fall 2012 Spring 2013 University of Pittsburgh

    E-Print Network [OSTI]

    Sibille, Etienne

    Term: Fall 2012 ­ Spring 2013 1 University of Pittsburgh HOUSING/DINING SERVICES CONTRACT This Housing/Dining Services Contract (this "Contract") is made by and between the University of Pittsburgh

  19. Term: Fall 2011 Spring 2012 University of Pittsburgh

    E-Print Network [OSTI]

    Sibille, Etienne

    Term: Fall 2011 ­ Spring 2012 1 University of Pittsburgh HOUSING/DINING SERVICES CONTRACT This Housing/Dining Services Contract (this "Contract") is made by and between the University of Pittsburgh

  20. 2013 Fall Commencement Receptions College/School Time Location

    E-Print Network [OSTI]

    Pittendrigh, Barry

    2013 Fall Commencement Receptions College/School Time Location Agriculture 12/15 after ceremony@purdue.edu Nuclear 12/15 11:30-1:00 Nuclear Engineering Bldg, Rm 115 For more info Chrystal Randler (765

  1. FORESTRY, BSF IPC: 2/8/2011 EFFECTIVE: Fall 2011

    E-Print Network [OSTI]

    Selmic, Sandra

    FORESTRY, BSF IPC: 2/8/2011 EFFECTIVE: Fall 2011 SCHOOL OF FORESTRY GENERAL EDUCATION REQUIREMENTS: PROFESSIONAL CORE: GRADE SCH GRADE SCH ARTS: FORESTRY: ART 290/HPE 280/MUGN 290/SPTH 3 FOR 111 Intro to Forest

  2. The rise/fall/connection model of intonation. 

    E-Print Network [OSTI]

    Taylor, Paul A

    1995-01-01T23:59:59.000Z

    This paper describes a new model of intonation for English. The paper proposes that intonation can be described using a sequence of rise, fall and connection elements. Pitch accents and boundary rises are described ...

  3. 6.450 Principles of Digital Communication - I, Fall 2002

    E-Print Network [OSTI]

    Gallager, Robert G.

    6.450 was offered in Fall 2002 as a relatively new elective on digital communication. The course serves as an introduction to the theory and practice behind many of today's communications systems. 6.450 forms the first of ...

  4. Idaho Falls Power- Residential Energy Efficiency Loan Program

    Broader source: Energy.gov [DOE]

    Idaho Falls Power's Energy Efficiency Loan Program offers zero interest loans for qualifying customers to purchase and install efficient electric appliances. The program will loan up to 100% of the...

  5. EAS/CEE 6795 Atmospheric Aerosols Fall 2011

    E-Print Network [OSTI]

    Weber, Rodney

    EAS/CEE 6795 Atmospheric Aerosols Fall 2011 Mon Wed Fri ­ 11 concepts of aerosol physics with applications to atmospheric aerosols. Text Book: Hinds, Aerosol Technology: Properties, behavior and measurement of airborne particles

  6. Fall 2013-Office of the Registrar Student Banner Marshals

    E-Print Network [OSTI]

    Dyer, Bill

    Fall 2013- Office of the Registrar Student Banner Marshals Morning of Commencement- Preparation with the banner and then reseat the students. There will be a second marshal to count students to make sure all

  7. Paper # XXX Topic: Reaction Kinetics Eastern State Fall Technical Meeting

    E-Print Network [OSTI]

    Knyazev, Vadim D.

    Paper # XXX Topic: Reaction Kinetics 1 Eastern State Fall Technical Meeting Chemical & Physical ­ 1017 s-1 #12;Paper # XXX Topic: Reaction Kinetics 2 and activation energy values close to the C-C bond

  8. AGRICULTURAL & BIOLOGICAL ENGINEERING FALL 2013 INSIDE THIS ISSUE

    E-Print Network [OSTI]

    Gilbert, Matthew

    AGRICULTURAL & BIOLOGICAL ENGINEERING FALL 2013 INSIDE THIS ISSUE: · ABESpring of Agricultural and Biological Engineering of the College of Agricultural, Consumer and Environmental Sciences and the College of Engineering at the University of Illinois at Urbana Champaign. 338 Agricultural Engineering

  9. EIS-0106: Great Falls-Conrad Transmission Line Project, Montana

    Broader source: Energy.gov [DOE]

    The Western Area Power Administration prepared this EIS to evaluate the environmental impacts of the construction and operation of a 230-kilovolt transmission line from Great Falls, Montana, to Conrad, Montana.

  10. Physics 122 Fundamentals of Physics II Syllabus for Fall 2012

    E-Print Network [OSTI]

    Lathrop, Daniel P.

    Physics 122 ­ Fundamentals of Physics II Syllabus for Fall 2012 Course description The second)-405-4993 Office hours : TBD Website http://elms.umd.edu The syllabus and schedule can be also found at: http

  11. Physics 171. General Relativity. Professor Michael Dine Fall, 2009. Syllabus

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Physics 171. General Relativity. Professor Michael Dine Fall, 2009. Syllabus Contact Information the material in class and in the text. I expect to revise this syllabus continually through the course

  12. Syllabus for MA 16100 IMPACT, Fall 2014 Description: Many ...

    E-Print Network [OSTI]

    2014-08-25T23:59:59.000Z

    Syllabus for MA 16100 IMPACT, Fall 2014. Description: Many students find that large lectures are not the best way for them to learn. IMPACT is a university-wide

  13. Jefferson Lab Announces Two Fall Science Series Events | Jefferson...

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

    first Fall 2004 Science Series event. The presentation will begin at 7 p.m. in the CEBAF Center auditorium on Monday, Oct. 4. Larsen's presentation, "Moon Runes, The Light of...

  14. Idaho Falls Power- Energy Efficient Heat Pump Loan Program

    Broader source: Energy.gov [DOE]

    Idaho Falls Power offers zero interest loans to all eligible customers for the purchase and installation of energy efficient heat pumps. The Heat Pump Program applies to heating or cooling in...

  15. MATH 371 COMBINATORICS: FALL 2013 SYLLABUS Instructor: Andrew Thompson

    E-Print Network [OSTI]

    Thompson, Andrew

    MATH 371 COMBINATORICS: FALL 2013 SYLLABUS Instructor: Andrew Thompson Where: LSRC A156 When: Tu www.math.duke.edu/~thompson/teaching and the MATH 371 Sakai site. OFFICE HOURS. These will be held

  16. Jefferson Lab announces two Fall Science Series lectures; examine...

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

    the topics of Jefferson Lab's Fall Science Series. The first presentation, "When Stars Attack" is Oct. 17 and features Dr. Brian Fields from the University of Illinois. He will...

  17. Jefferson Lab announces Oct. 7 Fall Science Series event | Jefferson...

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

    of North America in the 15th century, is housed in the Beinecke Rare Book and Manuscript Library at Yale University. Jefferson Lab announces Oct. 7 Fall Science Series event...

  18. River Falls Municipal Utilities- Renewable Energy Finance Program

    Broader source: Energy.gov [DOE]

    River Falls Municipal Utilities (RFMU) offers loans of $2,500 - $50,000 to its residential customers for the installation of photovoltaic (PV), solar thermal, geothermal, wind electric systems. The...

  19. ECE/CS 584: Fall 2012 Embedded System Verification

    E-Print Network [OSTI]

    Liberzon, Daniel

    powerful software tools (model checkers, SMT solvers, & theorem provers) for designing & analyzing systems · Real-time and hybrid system models, stability verification: Multiple Lyapunov functions, slow switchingECE/CS 584: Fall 2012 Embedded System Verification URL: http

  20. ,"Niagara Falls, NY Natural Gas Pipeline Exports to Canada (MMcf...

    U.S. Energy Information Administration (EIA) Indexed Site

    Exports to Canada (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Niagara Falls, NY...

  1. 9.00W Introduction to Psychology, Fall 2002

    E-Print Network [OSTI]

    Wolfe, Jeremy M.

    This course surveys questions about human behavior and mental life ranging from how you see to why you fall in love. The great controversies: nature and nurture, free will, consciousness, human differences, self and society. ...

  2. ED1 Exam 2 Problems Fall 2012 Section 16.

    E-Print Network [OSTI]

    Peale, Robert E.

    ED1 Exam 2 Problems Fall 2012 Section 16. 1. Find the scalar and vector potentials of a point charge density is (in SI units) A(r) = (µ0 a/3) ( x r) for r

  3. BIOS 3010: ECOLOGY Fall 2013 Dr Stephen Malcolm

    E-Print Network [OSTI]

    Malcolm, Stephen

    BIOS 3010: ECOLOGY ­ Fall 2013 Dr Stephen Malcolm BONUS POINT OPPORTUNITY 1: For up to 5 bonus: For credit, this bonus opportunity (title and summary paragraph) is due by September 16. #12;

  4. TA Position Available Fall Quarter 2014 Immediate Opening

    E-Print Network [OSTI]

    Bogyo, Matthew

    in the development of course and workshop content and materials · Assist with the identification, invitationTA Position Available ­ Fall Quarter 2014 Immediate Opening Career Transitions with facilitation of panel/group discussions · Prepare and distribute marketing materials to departments

  5. 4 BOSTONIA Fall 2011 COMMONWEALTH NEWS FROM BU AND BEYOND

    E-Print Network [OSTI]

    Spence, Harlan Ernest

    for those with severe motion impairments to Corey Petitt of Boston. CYDNEYSCOTT #12;Fall 2011 BOSTONIA 5 Two the 2011 Science Day Graduate School of Arts & Sciences Dean's Award and is already free online

  6. Prof. A. Suciu Name: ____________________* MTH 1733 QUIZ 4 Fall 1997

    E-Print Network [OSTI]

    QUIZ 4 Fall 1997 _________ 1. |||6_points||_Solve the following________________________________Quiz_4________________________________F* *all_1997_____ _________ 3. |||6_points||_A tank________________________________Quiz_4________________________________F* *all_1997_____ _________ 5. |||6_points

  7. Math 566 Topics in Combinatorics Fall 2009 Instructor Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Math 566 Topics in Combinatorics Fall 2009 Instructor Amites Sarkar Text Combinatorics B´ela Bollob and Fridays, in 216 Bond Hall. My phone number is 650 7569 and my e-mail is amites.sarkar@wwu.edu #12;

  8. Math 331 Ordinary Differential Equations Fall 2014 Instructor Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Math 331 Ordinary Differential Equations Fall 2014 Instructor Amites Sarkar Text Differential Bond Hall. My phone number is 650 7569 and my e-mail is amites.sarkar@wwu.edu Relation to Overall

  9. Math 564 Graph Theory Fall 2008 Instructor Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Math 564 Graph Theory Fall 2008 Instructor Amites Sarkar Text Pearls in Graph Theory (Dover Edition and Fridays, in 216 Bond Hall. My phone number is 650 7569 and my e-mail is amites.sarkar@wwu.edu #12;

  10. Math 564 Graph Theory Fall 2013 Instructor Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Math 564 Graph Theory Fall 2013 Instructor Amites Sarkar Text Modern Graph Theory B´ela Bollob, Tuesdays, Wednesdays and Fridays, in 216 Bond Hall. My phone number is 650 7569 and my e-mail is amites.sarkar

  11. Nonlocal description of a falling body through the air

    E-Print Network [OSTI]

    Kwok Sau Fa

    2008-10-02T23:59:59.000Z

    In this present work we consider a falling body through the air under the influence of gravity. In particular, we consider the experimental data based upon the free fall of six men in the atmosphere of the earth. In order to describe this process we employ a nonlocal dissipative force. We show that our description, by using an exponential memory kernel, can fit the experimental data as well as that of a local dissipative force.

  12. Ion Bernstein waves in a plasma with a kappa velocity distribution

    SciTech Connect (OSTI)

    Nsengiyumva, F.; Mace, R. L.; Hellberg, M. A. [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa)] [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa)

    2013-10-15T23:59:59.000Z

    Using a Vlasov-Poisson model, a numerical investigation of the dispersion relation for ion Bernstein waves in a kappa-distributed plasma has been carried out. The dispersion relation is found to depend significantly on the spectral index of the ions, ?{sub i}, the parameter whose smallness is a measure of the departure from thermal equilibrium of the distribution function. Over all cyclotron harmonics, the typical Bernstein wave curves are shifted to higher wavenumbers (k) if ?{sub i} is reduced. For waves whose frequency lies above the lower hybrid frequency, ?{sub LH}, an increasing excess of superthermal particles (decreasing ?{sub i}) reduces the frequency, ?{sub peak}, of the characteristic peak at which the group velocity vanishes, while the associated k{sub peak} is increased. As the ratio of ion plasma to cyclotron frequency (?{sub pi}/?{sub ci}) is increased, the fall-off of ? at large k is smaller for lower ?{sub i} and curves are shifted towards larger wavenumbers. In the lower hybrid frequency band and harmonic bands above it, the frequency in a low-?{sub i} plasma spans only a part of the intraharmonic space, unlike the Maxwellian case, thus exhibiting considerably less coupling between adjacent bands for low ?{sub i}. It is suggested that the presence of the ensuing stopbands may be a useful diagnostic for the velocity distribution characteristics. The model is applied to the Earth's plasma sheet boundary layer in which waves propagating perpendicularly to the ambient magnetic field at frequencies between harmonics of the ion cyclotron frequency are frequently observed.

  13. EFFICIENT ASSIMILATION OF RADAR DATA AT HIGH RESOLUTION FOR SHORT-RANGE NUMERICAL WEATHER PREDICTION

    E-Print Network [OSTI]

    Xue, Ming

    system must assimilate Doppler radar data including radial velocity and reflectivity, and combine and also con- tain the hydrometeors and latent heating effects that eliminate the need for spinning up

  14. Application of a Hydrodynamic Model for Assessing the Hydraulic Capacity and Flow Field at Willamette Falls Dam, Oregon

    SciTech Connect (OSTI)

    Lee, Cheegwan; Yang, Zhaoqing; Khangaonkar, Tarang P.; Divers, Arya-Behbehani

    2006-08-03T23:59:59.000Z

    The Willamette Falls Hydroelectric Power Dam, operated by Portland General Electric (PGE), is located on the Willamette River, Oregon. The Project site consists of T.W. Sullivan Power Plant and a 2,950-ft-long spillway located on the top of the Willamette Falls Dam. As part of the effort of protection and enhancement of environmental resources, a flow control structure at the dam was proposed to improve the flow field and enhance the downstream juvenile fish passage in the region just upstream of the forebay (pre-forebay). The flow in the pre-forebay of Willamette Falls Dam is affected by the complex geometry and bathymetry, powerhouse flow, fish ladder flow and the spillway around the dam. The expectation was that the flow would be sensitive to the proposed flow control structures and could be modified to enhance downstream migration. In this study, a three-dimensional, free-surface hydrodynamic model (EFDC) was developed for the pre-forebay region of Willamette Falls to evaluate the feasibility of the proposed alternative and its effect on the flow field in two different flow regimes (low and high river flow), as well as to assess the hydraulic capacity of flow control structures. One of the key challenges in this modeling study was to properly specify the free open boundary conditions along the 2,950-feet-long spillway. In this study, a pressure boundary condition based on hydraulic head rating curves was applied to the free spillway boundary. The numerical model was calibrated with ADP velocity measurements at 17 stations for the existing low flow condition. Good agreements between model results and measured data were obtained, indicating the successful application of pressure boundary condition on the free spillway boundary. The calibrated model was applied to simulate the flow field and free surface elevation in the high flow region near the control flow structures under different alternative conditions. The model results were used to evaluate the effectiveness of flow control structure alternative for downstream fish passage. The model was also used to estimate the hydraulic capacity based on the water surface head drops upstream of the structures. This model application demonstrated that a free surface coastal model can be used successfully to examine free surface hydraulic problems near high velocity regions upstream of spillways at dams.

  15. Stellar Velocity Dispersion of the Leo A Dwarf Galaxy

    E-Print Network [OSTI]

    Warren R. Brown; Margaret J. Geller; Scott J. Kenyon; Michael J. Kurtz

    2007-05-08T23:59:59.000Z

    We measure the first stellar velocity dispersion of the Leo A dwarf galaxy, \\sigma = 9.3 +- 1.3 km/s. We derive the velocity dispersion from the radial velocities of ten young B supergiants and two HII regions in the central region of Leo A. We estimate a projected mass of 8 +- 2.7 x10^7 solar masses within a radius of 2 arcmin, and a mass to light ratio of at least 20 +- 6 M_sun/L_sun. These results imply Leo A is at least ~80% dark matter by mass.

  16. Two-stream instability with time-dependent drift velocity

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

    Qin, Hong [PPPL; Davidson, Ronald C. [PPPL

    2014-01-01T23:59:59.000Z

    The classical two-stream instability driven by a constant relative drift velocity between two plasma components is extended to the case with time-dependent drift velocity. A solution method is developed to rigorously define and calculate the instability growth rate for linear perturbations relative to the time-dependent unperturbed two-stream motions. Stability diagrams for the oscillating two-stream instability are presented over a large region of parameter space. It is shown that the growth rate for the classical two-stream instability can be significantly reduced by adding an oscillatory component to the relative drift velocity.

  17. Measuring Oscillatory Velocity Fields Due to Swimming Algae

    E-Print Network [OSTI]

    Guasto, Jeffrey S; Gollub, J P

    2010-01-01T23:59:59.000Z

    In this fluid dynamics video, we present the first time-resolved measurements of the oscillatory velocity field induced by swimming unicellular microorganisms. Confinement of the green alga C. reinhardtii in stabilized thin liquid films allows simultaneous tracking of cells and tracer particles. The measured velocity field reveals complex time-dependent flow structures, and scales inversely with distance. The instantaneous mechanical power generated by the cells is measured from the velocity fields and peaks at 15 fW. The dissipation per cycle is more than four times what steady swimming would require.

  18. Two-stream instability with time-dependent drift velocity

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

    Qin, Hong; Davidson, Ronald C.

    2014-06-01T23:59:59.000Z

    The classical two-stream instability driven by a constant relative drift velocity between two plasma components is extended to the case with time-dependent drift velocity. A solution method is developed to rigorously define and calculate the instability growth rate for linear perturbations relative to the time-dependent unperturbed two-stream motions. Stability diagrams for the oscillating two-stream instability are presented over a large region of parameter space. It is shown that the growth rate for the classical two-stream instability can be significantly reduced by adding an oscillatory component to the relative drift velocity.

  19. Superconducting spoke cavities for high-velocity applications

    SciTech Connect (OSTI)

    Hopper, Christopher S. [Old Dominion U.; Delayen, Jean R. [Old Dominion U., JLAB

    2013-10-01T23:59:59.000Z

    To date, superconducting spoke cavities have been designed, developed, and tested for particle velocities up to {beta}{sub 0}~0.6, but there is a growing interest in possible applications of multispoke cavities for high-velocity applications. We have explored the design parameter space for low-frequency, high-velocity, double-spoke superconducting cavities in order to determine how each design parameter affects the electromagnetic properties, in particular the surface electromagnetic fields and the shunt impedance. We present detailed design for cavities operating at 325 and 352 MHz and optimized for {beta}{sub 0}~=0.82 and 1.

  20. Report of IAU Commission 30 on Radial Velocities (2009-2012)

    E-Print Network [OSTI]

    Torres, G; Lovis, C; Marcy, G W; Mathieu, R D; Mazeh, T; Meibom, S; Minniti, D; Moutou, C; Pepe, F; Pourbaix, D; Turon, C; Udry, S; Zwitter, T

    2011-01-01T23:59:59.000Z

    Brief summaries are given of the following subjects of interest to IAU Commission 30: Large-scale radial-velocity surveys; The role of radial-velocity measurements in studies of stellar angular momentum evolution and stellar age; Radial velocities in open clusters; Toward higher radial-velocity precision; High-precision radial velocities applied to studies of binary stars; Doppler boosting effect; Working groups (Stellar radial velocity bibliography; Radial velocity standards; Catalogue of orbital elements of spectroscopic binaries [SB9]).

  1. Multipole seismoelectric logging while drilling (LWD) for acoustic velocity measurements

    E-Print Network [OSTI]

    Zhu, Zhenya

    2012-01-01T23:59:59.000Z

    In seismoelectric well logging, an acoustic wave propagates along a borehole and induces electrical signals along the borehole wall. The apparent velocities of these seismoelectric signals are equal to the formation ...

  2. CO and IRAS detection of an intermediate-velocity cloud

    SciTech Connect (OSTI)

    Desert, F.X.; Bazell, D.; Blitz, L. (Paris Observatoire, Meudon (France) Space Telescope Science Institute, Baltimore, MD (USA) Maryland Univ., College Park (USA))

    1990-06-01T23:59:59.000Z

    In the course of a radio survey of high-Galactic-latitude clouds, CO emission was detected at the position l = 210.8 deg and b = 63.1 deg with an LSR velocity of -39 km/sec. This molecular cloud constitutes the third one with an unusually large absolute velocity at these latitudes, as compared with the 5.4-km/sec cloud-to-cloud velocity dispersion of the high-latitude molecular clouds. The position is coincident with an H I intermediate-velocity cloud (GHL 11, Verschuur H, OLM 268) and the IR-excess cloud 306 in the list by Desert et al. (1988). This cloud is clearly detected at all four IRAS wavelengths and has warmer colors than the local ISM. 27 refs.

  3. P wave velocity variations in the Coso region, California, derived...

    Open Energy Info (EERE)

    times Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: P wave velocity variations in the Coso region, California, derived from local earthquake...

  4. LOW VELOCITY SHPERE IMPACT OF SODA LIME SILICATE GLASS

    SciTech Connect (OSTI)

    Morrissey, Timothy G [ORNL; Fox, Ethan E [ORNL; Wereszczak, Andrew A [ORNL; Vuono, Daniel J [ORNL

    2012-01-01T23:59:59.000Z

    This report summarizes TARDEC-sponsored work at Oak Ridge National Laboratory (ORNL) during the FY11 involving low velocity ( 30 m/s or 65 mph) ball impact testing of Starphire soda lime silicate glass. The intent was to better understand low velocity impact response in the Starphire for sphere densities that bracketed that of rock. Five sphere materials were used: borosilicate glass, soda-lime silicate glass, steel, silicon nitride, and alumina. A gas gun was fabricated to produce controlled velocity delivery of the spheres against Starphire tile targets. Minimum impact velocities to initiate fracture in the Starphire were measured and interpreted in context to the kinetic energy of impact and the elastic property mismatch between the any of the five sphere-Starphire-target combinations.

  5. air velocity distribution: Topics by E-print Network

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

    Page Topic Index 1 Carbon isotope evidence for the latitudinal distribution and wind speed dependence of the air-sea gas transfer velocity University of California eScholarship...

  6. Superluminal Velocity of Photons in a Gravitational Background

    E-Print Network [OSTI]

    I. B. Khriplovich

    1994-11-20T23:59:59.000Z

    The influence of radiative corrections on the photon propagation in a gravitational background is investigated without the low-frequency approximation $\\omega \\ll m$. The conclusion is made in this way that the velocity of light can exceed unity.

  7. artery peak velocity: Topics by E-print Network

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

    The time series analysis of Doppler velocity maps show enhanced power in the sunspot umbra at higher frequencies and in the penumbra at lower frequencies. We find that the peak...

  8. Seismic Velocity And Attenuation Structure Of The Geysers Geothermal...

    Open Energy Info (EERE)

    issue at this field is the distribution of fluid in the matrix of the reservoir rock. In this paper, we interpret seismic compressional-wave velocity and quality quotient...

  9. Effective velocities in fractured media: a numerical study using the ...

    E-Print Network [OSTI]

    2002-03-18T23:59:59.000Z

    theories that predict the effective P- and S-wave velocities in fractured materials in ... can be treated only by numerical techniques because analyt- ... apply the rotated staggered grid (Saenger, Gold and Shapiro ..... (r ? 0:2) and for SH-

  10. Pore fluid effects on seismic velocity in anisotropic rocks

    SciTech Connect (OSTI)

    Mukerji, T.; Mavko, G. (Stanford Univ., CA (United States). Dept. of Geophysics)

    1994-02-01T23:59:59.000Z

    A simple new technique predicts the high- and low-frequency saturated velocities in anisotropic rocks entirely in terms of measurable dry rock properties without the need for idealized crack geometries. Measurements of dry velocity versus pressure and porosity versus pressure contain all of the necessary information for predicting the frequency-dependent effects of fluid saturation. Furthermore, these measurements automatically incorporate all pore interaction, so there is no limitation to low crack density. The velocities are found to depend on five key interrelated variables: frequency, the distribution of compliant crack-like porosity, the intrinsic or noncrack anisotropy, fluid viscosity and compressibility, and effective pressure. The sensitivity of velocities to saturation is generally greater at high frequencies than low frequencies. The magnitude of the differences from dry to saturated and from low frequency to high frequency is determined by the compliant or crack-like porosity. Predictions of saturated velocities based on dry data for sandstone and granite show that compressional velocities generally increase with saturation and with frequency. However, the degree of compressional wave anisotropy may either increase or decrease upon saturation depending on the crack distribution, the effective pressure, and the frequency at which the measurements are made. Shear-wave velocities can either increase or decrease with saturation, and the degree of anisotropy depends on the microstructure, pressure, and frequency. Consequently great care must be taken when interpreting observed velocity anisotropy for measurements at low frequencies, typical of in situ observations, will generally be different from those at high frequencies, typical of the laboratory.

  11. Estimating propagation velocity through a surface acoustic wave sensor

    SciTech Connect (OSTI)

    Xu, Wenyuan (Oakdale, MN); Huizinga, John S. (Dellwood, MN)

    2010-03-16T23:59:59.000Z

    Techniques are described for estimating the propagation velocity through a surface acoustic wave sensor. In particular, techniques which measure and exploit a proper segment of phase frequency response of the surface acoustic wave sensor are described for use as a basis of bacterial detection by the sensor. As described, use of velocity estimation based on a proper segment of phase frequency response has advantages over conventional techniques that use phase shift as the basis for detection.

  12. Velocity of sound in solid methane near melting temperatures

    E-Print Network [OSTI]

    Whitehead, John Martin

    1968-01-01T23:59:59.000Z

    VELOCITY OF SOUND IN SOLID METHANE NEAR MELTING TEMPERATURES A Thesis By JOHN MARTIN WHITEHEAD Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May... 1968 Ma)or Sub)ect: Physics VELOCITY OF SOVND IN SOLID METHANE NEAR MELTING TEMPERATURES A Thesis By JOHN MARTIN WHITEHEAD Approved as to style and content by& (Chairman of Committee) (Head of Departsmnt) (Mem er (Member) May 1968...

  13. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-02-16T23:59:59.000Z

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution is disclosed. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna. 46 figs.

  14. Supersonic relative velocity effect on the baryonic acoustic oscillation measurements

    SciTech Connect (OSTI)

    Yoo, Jaiyul; Seljak, Uroš [Institute for Theoretical Physics, University of Zürich, CH-8057 Zürich (Switzerland); Dalal, Neal, E-mail: jyoo@physik.uzh.ch, E-mail: neal@cita.utoronto.ca, E-mail: seljak@physik.uzh.ch [Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Ontario, M5S 3H8 (Canada)

    2011-07-01T23:59:59.000Z

    We investigate the effect of supersonic relative velocities between baryons and dark matter, recently shown to arise generically at high redshift, on baryonic acoustic oscillation (BAO) measurements at low redshift. The amplitude of the relative velocity effect at low redshift is model-dependent, but can be parameterized by using an unknown bias. We find that if unaccounted, the relative velocity effect can shift the BAO peak position and bias estimates of the dark energy equation-of-state due to its non-smooth, out-of-phase oscillation structure around the BAO scale. Fortunately, the relative velocity effect can be easily modeled in constraining cosmological parameters without substantially inflating the error budget. We also demonstrate that the presence of the relative velocity effect gives rise to a unique signature in the galaxy bispectrum, which can be utilized to isolate this effect. Future dark energy surveys can accurately measure the relative velocity effect and subtract it from the power spectrum analysis to constrain dark energy models with high precision.

  15. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, David J. (Oakland, CA)

    1999-01-01T23:59:59.000Z

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna.

  16. The concentration-velocity dispersion relation in galaxy groups

    E-Print Network [OSTI]

    Andreas Faltenbacher; William G. Mathews

    2007-06-08T23:59:59.000Z

    Based on results from cold dark matter N-body simulations we develop a dynamical model for the evolution of subhaloes within host haloes of galaxy groups. Only subhaloes more massive than 5 times 10^8 M_{sol} at the time of accretion are examined because they are massive enough to possibly host luminous galaxies. As they orbit within a growing host potential the subhaloes are subject to tidal stripping and dynamical friction. We consider groups of equal mass (M_{vir} = 3.9 times 10^{13} M_{sol}) at redshift z=0 but with different concentrations associated with different formation times. We investigate the variation of subhaloe (or satellite galaxy) velocity dispersion with host concentration and/or formation time. In agreement with the Jeans equation the velocity dispersion of subhaloes increases with the host concentration. Between concentrations ~5 and ~20 the subhaloe velocity dispersions increase by ~25 per cent. By applying a simplified tidal disruption criterion, i.e. rejection of all subhaloes with a tidal truncation radius below 3 kpc at z=0, the central velocity dispersion of 'surviving' subhaloes increases substantially for all concentrations. The enhanced central velocity dispersion among surviving subhaloes is caused by a lack of slow tangential motions. Additionally, we present a fitting formula for the velocity anisotropy parameter \\beta(r) which does not depend on concentration if the group-centric distances are scaled by r_s, the characteristic radius of the NFW-profile.

  17. Albeni Falls Wildlife Mitigation Project, 2001 Annual Report.

    SciTech Connect (OSTI)

    Terra-Burns, Mary (Idaho Department of Fish and Game, Albeni Falls Interagency Work Group, Boise, ID)

    2002-02-11T23:59:59.000Z

    The Albeni Falls Interagency Work Group was actively engaged in implementing wildlife mitigation activities in 2001. The Work Group met quarterly to discuss management and budget issues affecting the Albeni Falls Wildlife Mitigation Program. Work Group members protected 851 acres of wetland habitat in 2001. Wildlife habitat protected to date for the Albeni Falls project is approximately 5,248.31 acres ({approx}4,037.48 Habitat Units). Approximately 14% of the total wildlife habitat lost has been mitigated. Administrative activities increased as funding was more evenly distributed among Work Group members and protection opportunities became more time consuming. In 2001, Work Group members focused on development and implementation of the monitoring and evaluation program as well as completion of site-specific management plans. With the implementation of the monitoring and evaluation program, and as management plans are reviewed and executed, on the ground management activities are expected to increase in 2002.

  18. Propagation velocities of gas rings in collisional ring galaxies

    E-Print Network [OSTI]

    E. I. Vorobyov; D. Bizyaev

    2003-01-27T23:59:59.000Z

    The propagation velocity of the first gas ring in collisional ring galaxies, i.e. the velocity at which the maximum in the radial gas density profile propagates radially in the galactic disk, is usually inferred from the radial expansion velocity of gas in the first ring. Our numerical hydrodynamics modeling of ring galaxy formation however shows that the maximum radial expansion velocity of gas in the first ring ($v_{gas}$) is invariably below the propagation velocity of the first gas ring itself ($v_{ring}$). Modeling of the Cartwheel galaxy indicates that the outer ring is currently propagating at $v_{ring} \\approx$ 100 km/s, while the maximum radial expansion velocity of gas in the outer ring is currently $v_{gas} \\approx$ 65 km/s. Modeling of the radial B-V/V-K color gradients of the Cartwheel ring galaxy also indicates that the outer ring is propagating at $v_{ring} \\ge $ 90 km/s. We show that a combined effect of inclination, finite thickness, and warping of the Cartwheel's disk might be responsible for the lack of angular difference in the peak positions found for the azimuthally averaged $H\\alpha$, K and B surface brightness profiles of the Cartwheel's outer ring. Indeed, the radial $H\\alpha$ surface brightness profiles obtained along the Cartwheel's major axis, where effects of inclination and finite thickness are minimized, do peak exterior to those at K- and B-bands. The angular difference in peak positions implies $v_{ring}$ = 110 km/s, which is in agreement with the model predictions. We briefly discuss the utility of radio continuum emission and spectral line equivalent widths for determining the propagation velocity of gas rings in collisional ring galaxies.

  19. Effects of increasing tip velocity on wind turbine rotor design.

    SciTech Connect (OSTI)

    Resor, Brian Ray; Maniaci, David Charles; Berg, Jonathan Charles; Richards, Phillip William

    2014-05-01T23:59:59.000Z

    A reduction in cost of energy from wind is anticipated when maximum allowable tip velocity is allowed to increase. Rotor torque decreases as tip velocity increases and rotor size and power rating are held constant. Reduction in rotor torque yields a lighter weight gearbox, a decrease in the turbine cost, and an increase in the capacity for the turbine to deliver cost competitive electricity. The high speed rotor incurs costs attributable to rotor aero-acoustics and system loads. The increased loads of high speed rotors drive the sizing and cost of other components in the system. Rotor, drivetrain, and tower designs at 80 m/s maximum tip velocity and 100 m/s maximum tip velocity are created to quantify these effects. Component costs, annualized energy production, and cost of energy are computed for each design to quantify the change in overall cost of energy resulting from the increase in turbine tip velocity. High fidelity physics based models rather than cost and scaling models are used to perform the work. Results provide a quantitative assessment of anticipated costs and benefits for high speed rotors. Finally, important lessons regarding full system optimization of wind turbines are documented.

  20. Optic-microwave mixing velocimeter for superhigh velocity measurement

    SciTech Connect (OSTI)

    Weng Jidong; Wang Xiang; Tao Tianjiong; Liu Cangli; Tan Hua [Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P.O. Box 919-102, Mianyang, Sichuan 621900 (China)

    2011-12-15T23:59:59.000Z

    The phenomenon that a light beam reflected off a moving object experiences a Doppler shift in its frequency underlies practical interferometric techniques for remote velocity measurements, such as velocity interferometer system for any reflector (VISAR), displacement interferometer system for any reflector (DISAR), and photonic Doppler velocimetry (PDV). While VISAR velocimeters are often bewildered by the fringe loss upon high-acceleration dynamic process diagnosis, the optic-fiber velocimeters such as DISAR and PDV, on the other hand, are puzzled by high velocity measurement over 10 km/s, due to the demand for the high bandwidth digitizer. Here, we describe a new optic-microwave mixing velocimeter (OMV) for super-high velocity measurements. By using currently available commercial microwave products, we have constructed a simple, compact, and reliable OMV device, and have successfully obtained, with a digitizer of bandwidth 6 GH only, the precise velocity history of an aluminum flyer plate being accelerated up to 11.2 km/s in a three stage gas-gun experiment.

  1. Exceptional Ground Accelerations and Velocities Caused by Earthquakes

    SciTech Connect (OSTI)

    Anderson, John

    2008-01-17T23:59:59.000Z

    This project aims to understand the characteristics of the free-field strong-motion records that have yielded the 100 largest peak accelerations and the 100 largest peak velocities recorded to date. The peak is defined as the maximum magnitude of the acceleration or velocity vector during the strong shaking. This compilation includes 35 records with peak acceleration greater than gravity, and 41 records with peak velocities greater than 100 cm/s. The results represent an estimated 150,000 instrument-years of strong-motion recordings. The mean horizontal acceleration or velocity, as used for the NGA ground motion models, is typically 0.76 times the magnitude of this vector peak. Accelerations in the top 100 come from earthquakes as small as magnitude 5, while velocities in the top 100 all come from earthquakes with magnitude 6 or larger. Records are dominated by crustal earthquakes with thrust, oblique-thrust, or strike-slip mechanisms. Normal faulting mechanisms in crustal earthquakes constitute under 5% of the records in the databases searched, and an even smaller percentage of the exceptional records. All NEHRP site categories have contributed exceptional records, in proportions similar to the extent that they are represented in the larger database.

  2. Control of group velocity by phase-changing collisions

    SciTech Connect (OSTI)

    Goren, C.; Rosenbluh, M. [Department of Physics, Bar-Ilan University, Ramat Gan 52900 (Israel); Wilson-Gordon, A.D.; Friedmann, H. [Department of Chemistry, Bar-Ilan University, Ramat Gan 52900 (Israel)

    2005-08-15T23:59:59.000Z

    We discuss the influence of phase-changing collisions on the group velocities in Doppler-broadened, cycling, degenerate two-level systems where F{sub e}=F{sub g}+1 and F{sub g}>0, interacting with pump and probe lasers, that exhibit electromagnetically induced absorption (EIA). Two model systems are considered: the N system where the pump and probe are polarized perpendicularly, and EIA is due to transfer of coherence (TOC), and the double two-level system (TLS) where both lasers have the same polarization, and EIA is due to transfer of population (TOP). For the case of Doppler-broadened EIA TOC, which occurs at low pump intensity, there is a switch from positive to negative dispersion and group velocity, as the rate of phase-changing collisions is increased. For the case of EIA TOP at low pump intensity, the dispersion and group velocity remain negative even when the collision rate is increased. Pressure-induced narrowing, accompanied by an increase in the magnitude of the negative dispersion and a decrease in the magnitude of the negative group velocity, occurs in both EIA TOC and EIA TOP, at low pump intensity. When the pump intensity is increased, a switch from negative to positive dispersion and group velocity, with increasing collision rate, also occurs in the double TLS system. However, the effect is far smaller than in the case of the N system at low pump intensity.

  3. Modeling and Control of High-Velocity Oxygen-Fuel (HVOF) Thermal Spray: A Tutorial Review

    E-Print Network [OSTI]

    Li, Mingheng; Christofides, Panagiotis D.

    2009-01-01T23:59:59.000Z

    Fluid Dynamics Analysis of a Wire- Feed, High-Velocity Oxygen Fuel (Fluid Dynamic Modeling of Gas Flow Charac- teristics in a High-Velocity Oxy-Fuel

  4. CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus

    E-Print Network [OSTI]

    Hickman, Mark

    1 CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus Catalog This course of class) #12;2 CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus Course Outline: What

  5. CLAS C308 Roman Law C. J. Bannon SYLLABUS Fall 2012

    E-Print Network [OSTI]

    Indiana University

    CLAS C308 Roman Law C. J. Bannon SYLLABUS Fall 2012 Professor Cynthia J. Bannon Office: Ballantine% Research Paper 20% #12;CLAS C308 Roman Law C. J. Bannon SYLLABUS Fall 2012 Course Policies and Expectations

  6. 2nd Annual National Safety Awareness Event to Prevent Falls in...

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

    nd Annual National Safety Awareness Event to Prevent Falls in Construction 2nd Annual National Safety Awareness Event to Prevent Falls in Construction April 27, 2015 - 8:08am...

  7. SUBSTRUCTURE IN BULK VELOCITIES OF MILKY WAY DISK STARS

    SciTech Connect (OSTI)

    Carlin, Jeffrey L.; DeLaunay, James; Newberg, Heidi Jo; Gole, Daniel; Grabowski, Kathleen [Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180 (United States)] [Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180 (United States); Deng, Licai; Liu, Chao; Luo, A-Li; Zhang, Haotong; Zhao, Gang; Zhao, Yongheng [Key Lab for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)] [Key Lab for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Jin, Ge [University of Science and Technology of China, Hefei 230026 (China)] [University of Science and Technology of China, Hefei 230026 (China); Liu, Xiaowei; Yuan, Haibo, E-mail: carlij@rpi.edu [Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871 (China)] [Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871 (China)

    2013-11-01T23:59:59.000Z

    We find that Galactic disk stars near the anticenter exhibit velocity asymmetries in both the Galactocentric radial and vertical components across the midplane as well as azimuthally. These findings are based on Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectroscopic velocities for a sample of ?400, 000 F-type stars, combined with proper motions from the PPMXL catalog for which we have derived corrections to the zero points based in part on spectroscopically discovered galaxies and QSOs from LAMOST. In the region within 2 kpc outside the Sun's radius and ±2 kpc from the Galactic midplane, we show that stars above the plane exhibit net outward radial motions with downward vertical velocities, while stars below the plane have roughly the opposite behavior. We discuss this in the context of other recent findings, and conclude that we are likely seeing the signature of vertical disturbances to the disk due to an external perturbation.

  8. The Velocity Field of Quasar Broad Emission Line Gas

    E-Print Network [OSTI]

    Brian Punsly

    2007-01-25T23:59:59.000Z

    In this Letter, the broad emission line (BEL) profiles of superluminal quasars with apparent jet velocities, $\\beta_{a}>10$, (ultraluminal QSOs, or ULQSOs hereafter) are studied as a diagnostic of the velocity field of the BEL emitting gas in quasars. The ULQSOs are useful because they satisfy a very strict kinematical constraint, their parsec scale jets must be propagating within $12^{\\circ}$ of the line of sight. We know the orientation of these objects with great certainty. The large BEL FWHM, $\\sim 3,000 \\mathrm{km/s} - 6,000 \\mathrm{km/s}$, in ULQSOs tend to indicate that the BEL gas has a larger component of axial velocity (either random or in a wind) along the jet direction than previously thought.

  9. Measurement of Poloidal Velocity on the National Spherical Torus Experiment

    SciTech Connect (OSTI)

    Ronald E. Bell and Russell Feder

    2010-06-04T23:59:59.000Z

    A diagnostic suite has been developed to measure impurity poloidal flow using charge exchange recombination spectroscopy on the National Spherical Torus Experiment. Toroidal and poloidal viewing systems measure all quantities required to determine the radial electric field. Two sets of up/down symmetric poloidal views are used to measure both active emission in the plane of the neutral heating beams and background emission in a radial plane away from the neutral beams. Differential velocity measurements isolate the line-integrated poloidal velocity from apparent flows due to the energy-dependent chargeexchange cross section. Six f/1.8 spectrometers measure 276 spectra to obtain 75 active and 63 background channels every 10 ms. Local measurements from a similar midplane toroidal viewing system are mapped into two dimensions to allow the inversion of poloidal line-integrated measurements to obtain local poloidal velocity profiles. Radial resolution after inversion is 0.6-1.8 cm from the plasma edge to the center.

  10. Planar velocity analysis of diesel spray shadow images

    E-Print Network [OSTI]

    Sedarsky, David; Blaisot, J-B; Rozé, C

    2012-01-01T23:59:59.000Z

    The focus of this work is to demonstrate how spatially resolved image information from diesel fuel injection events can be obtained using a forward-scatter imaging geometry, and used to calculate the velocities of liquid structures on the periphery of the spray. In order to obtain accurate velocities directly from individual diesel spray structures, those features need to be spatially resolved in the measurement. The distributed structures measured in a direct shadowgraphy arrangement cannot be reliably analyzed for this kind of velocity information. However, by utilizing an intense collimated light source and adding imaging optics which modify the signal collection, spatially resolved optical information can be retrieved from spray edge regions within a chosen object plane. This work discusses a set of measurements where a diesel spray is illuminated in rapid succession by two ultrafast laser pulses generated by a mode-locked Ti-Sapphire oscillator seeding a matched pair of regenerative amplifiers. Light fro...

  11. St. Stephen powerhouse tailrace velocity measurement. Final report

    SciTech Connect (OSTI)

    Fagerburg, T.L.

    1986-09-01T23:59:59.000Z

    Tests were conducted to provide a prototype evaluation of the operating conditions of the project and to evaluate the adequacy of the repairs and remedial work performed in the channel downstream of the tailrace. Prototype measurements were made to define the relative magnitudes of velocities and the surface flow patterns in the channel downstream of the tailrace and the displacement, if any, of the stone protection material resulting from various turbine operations and tailwater conditions. Results of the data collection included determination of (a) velocity distribution at various ranges across the channel; (b) velocity profiles at the toe of the slope and at the observed location of highest velocity; and (c) unusual surface flow patterns that are produced by different combinations of turbine operations. Recommendations for start-up and shut-down procedures for the turbine operations that would produce the most acceptable. The depth soundings revealed that the stone protection material was quite stable (District surveys reveal that no appreciable displacement has occurred during the subsequent months of operation of the powerhouse.) The flow velocities were found to concentrate along the right side of the channel as a result of uneven flow distribution from the draft tube bays and the asymmetrical geometry along the left side of the tailrace. Return flows were observed and found to concentrate along the left side of the channel except when all three turbines were operating. Operating recommendations for the turbines are made based on tailwater conditions, length of time of nonoperation of the powerhouse, and the velocity data obtained from the tests.

  12. Footsteps Toward Understanding Fall Risk and Quality of Life in People with Diabetic Peripheral Neuropathy

    E-Print Network [OSTI]

    Jernigan, Stephen

    2011-04-25T23:59:59.000Z

    , & Studenski, 1992). The utility of these tools has led to their validation in people with a known increased risk of falls due to problems such as Parkinson’s disease(Dibble, Christensen, Ballard, & Foreman, 2008), vestibular dysfunction(Marchetti, Whitney... of the aforementioned fall risk assessment tools in people with DPN. Ideally, these types of studies would use prospective methods to determine whether or not fall risk assessment tools accurately identify people at risk of falling.(Dibble & Lange, 2006; Rubenstein...

  13. EEC 116, Fall 2012, B. Baas 35 VLSI Design is Like Art

    E-Print Network [OSTI]

    Baas, Bevan

    · Full control of paint boundaries #12;EEC 116, Fall 2012, B. Baas 37 Full-Custom Source: Rembrandt van

  14. Term: Fall 2013 Spring 2014 University of Pittsburgh

    E-Print Network [OSTI]

    Sibille, Etienne

    Term: Fall 2013 ­ Spring 2014 University of Pittsburgh HOUSING/DINING SERVICES CONTRACT/Dining Services Contract (this "Contract") is made by and between the University of Pittsburgh's Housing/Dining Services Contract does not guarantee admission to the University. Applicants

  15. LSRCP Response to ISRP Snake River Fall Chinook Program Review

    E-Print Network [OSTI]

    M & E needs necessary to obtain an ESA section 10 permit to operate Lyons Ferry Hatchery. LSRCP assumes that the Section 10 permit will be consistent with the Snake River Fall Chinook Recovery Plan when Plans (HGMPs) and received ESA Section 10 Permit coverage. 2. Evaluate hatchery/wild salmon interactions

  16. FORESTRY, BSF IPC: 6/15/2011 EFFECTIVE: Fall 2011

    E-Print Network [OSTI]

    Selmic, Sandra

    FORESTRY, BSF IPC: 6/15/2011 EFFECTIVE: Fall 2011 SCHOOL OF FORESTRY GENERAL EDUCATION REQUIREMENTS: PROFESSIONAL COURSES: GRADE SCH GRADE SCH ARTS: FORESTRY CORE: ART 290/HPE 280/MUGN 290/SPTH 290 3 FOR/WILD 111 Intro to Forestry & Wildlife Management 2 FOR 201 Microcomputer Applications 3 ENGL COMPOSITION: FOR 202

  17. Updated 01/14 When to Look for Fall Housing

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Updated 01/14 When to Look for Fall Housing Most landlords do not know when their rental in August to give yourself plenty of time if you didn't locate housing the previous spring quarter listings, mostly units, but also rooms in shared housing. Locate them in our Rental Listings by searching

  18. ORE 654: Applications of Ocean Acoustics Fall Semester 2014

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    of this course is to provide the ocean engineering student an understanding of how sound propagates through: Ocean engineering specialization Program Outcome 5: Use of latest tools in ocean engineering ProgramORE 654: Applications of Ocean Acoustics Syllabus Fall Semester 2014 Tuesday/Thursday 12:00-1:15 PM

  19. COMPUTER ENGINEERING CURRICULUM GUIDE Fall 2012 Spring 2013

    E-Print Network [OSTI]

    COMPUTER ENGINEERING CURRICULUM GUIDE Fall 2012 ­ Spring 2013 ACADEMIC REQUIREMENTS 1. REQUIRED TOTAL CREDITS Computer Engineering Degree, 127 A minimum of 42 upper-division semester credits (300 by the Electrical and Computer Engineering Department. 2. GRADE REQUIREMENTS University ­ 2.00 GPA College

  20. History of Economic Thought Econ 426, Binghamton University, Fall 2010

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    -1- History of Economic Thought Econ 426, Binghamton University, Fall 2010 Instructor: Dr. Florenz: A History of Economic Theory and Method, 5th ed., 2007, Waveland Press ($82.95). You can use a copy of the 4 on the History of Economic Thought (e.g. History of Economic Thought by Harry Landreth and David Colander [any

  1. Campus Recreational Services Fall 2014 Personal Training Internship

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Campus Recreational Services Fall 2014 Personal Training Internship OUT 395 ­ Independent Study The Personal Training Internship is designed to prepare students for the national American Council on Exercise internship offered to ALL undergraduate and graduate students (non-required OUT credits). Topics will include

  2. EIS-0397: Lyle Falls Fish Passage Project, WA

    Broader source: Energy.gov [DOE]

    This EIS analyzes BPA's decision to modify funding to the existing Lyle Falls Fishway on the lower Klickitat River in Klickitat County, WA. The proposed project would help BPA meet its off-site mitigation responsibilities for anadromous fish affected by the development of the Federal Columbia River Power System and increase overall fish production in the Columbia Basin.

  3. Environmental Research Group 2014 Fall Seminar Series, Gregg Hall 320

    E-Print Network [OSTI]

    Environmental Research Group 2014 Fall Seminar Series, Gregg Hall 320 September 26, 2014, 12:00 ­ 1 and environmental impact. This presentation will describe results in non-covalent derivatization and bioinspired care products, solar energy and construction and paving materials are examples of how green chemistry

  4. MICROBIAL ECOLOGY BIOL 4115 FALL 2014 RESEARCH PAPER GUIDLINES

    E-Print Network [OSTI]

    Christner, Brent C.

    MICROBIAL ECOLOGY ­ BIOL 4115 ­ FALL 2014 RESEARCH PAPER GUIDLINES Purpose: To develop and evaluate of oil Google Scholar, Web of Science, and PubMed are all good options for searching scientific articles examples: General topic Specific topic Anaerobic ammonia oxidation Anaerobic removal of nitrogen

  5. COURSE SYLLABUS OSE 4470 FALL 2014 `FIBER-OPTIC COMMUNICATIONS'

    E-Print Network [OSTI]

    Van Stryland, Eric

    COURSE SYLLABUS OSE 4470 FALL 2014 `FIBER-OPTIC COMMUNICATIONS' INSTRUCTOR: SASAN FATHPOUR CLASS of optical fiber communication systems including the optoelectronic devices used in transmitters and receivers. COURSE DESCRIPTION This course is an introduction to the principles of optical fiber

  6. Geology 460:301 Fall 2007 Mineralogy Lab

    E-Print Network [OSTI]

    Geology 460:301 Fall 2007 Mineralogy Lab Professor Jeremy Delaney Teaching Assistant: Alissa Henza Science by Cornelius Klein (22nd edition) Introduction to Optical Mineralogy by William Nesse Grading Policy: Lab is 33% of your Mineralogy grade. This 33% is made up of: Labs: 70% Quizzes: 5% Final Exam: 25

  7. Fall `10 Seminar Series Department of Materials Science and Engineering

    E-Print Network [OSTI]

    Gilchrist, James F.

    Fall `10 Seminar Series Department of Materials Science and Engineering Center for Advanced of Materials Science & Eng., University of Utah "Strain Engineering and Nanomechanical Architecture for Self Materials and Nanotechnology Seminar ­ 4:10 p.m. ­ WH 203 Refreshments served at 3:45 p.m. in Student Lounge

  8. Ecology, Evolution and Behavior Seminar Series Fall Semester 2013

    E-Print Network [OSTI]

    Beex, A. A. "Louis"

    Ecology, Evolution and Behavior Seminar Series Fall Semester 2013 All seminars except dates labeled alters female behavior and physiology in feral horses Sept. 19 Noah Fierer Univ Colorado Boulder Ecology, perception, and the evolution of animal communication systems Sewall Nov. 14 Eric Walters Old Dominion Unv

  9. Sustainability Management K4100 Section 001, Fall 2013

    E-Print Network [OSTI]

    Sustainability Management K4100 Section 001, Fall 2013 Time: Wednesdays 6:10-8:00 PM Professor@columbia.edu Sarah Volkman: e-mail: sv2372@columbia.edu Course Objectives: Sustainability management of sustainability management. This is not an academic course that reviews the literature of the field and discusses

  10. Order and Containment in Concurrent System Design Copyright Fall 2000

    E-Print Network [OSTI]

    Order and Containment in Concurrent System Design Copyright Fall 2000 by John Sidney Davis II #12;1 Abstract Order and Containment in Concurrent System Design by John Sidney Davis II Doctor of Philosophy in Engineering-Electrical Engineering and Computer Science University of California at Berkeley Professor Edward

  11. Electrical and Computer Engineering (ECE) FALL 2010-SPRING 2011

    E-Print Network [OSTI]

    Schurgers, Curt

    Electrical and Computer Engineering (ECE) FALL 2010-SPRING 2011 Undergraduate Affairs, Room 2705 knowledge of mathematics, science, and engineering to electrical engineering problems 2. An ability The Department of Electrical and Computer Engineering offers undergraduate programs leading to the B.S. degree

  12. ELECTRICAL ENGINEERING CURRICULUM GUIDE Fall 2012 Spring 2013

    E-Print Network [OSTI]

    ELECTRICAL ENGINEERING CURRICULUM GUIDE Fall 2012 ­ Spring 2013 ACADEMIC REQUIREMENTS 1. REQUIRED TOTAL CREDITS Electrical Engineering, 125-126 A minimum of 42 upper-division semester credits (300 by the Electrical and Computer Engineering Department. The Lasers & Optical Engineering concentration is also 125

  13. Syllabus: Applied Environmental Geophysics MGG 525 Fall 2011, 3 credits

    E-Print Network [OSTI]

    Miami, University of

    1 Syllabus: Applied Environmental Geophysics MGG 525 Fall 2011, 3 credits (Version 110824e) Instructor: Mark Grasmueck, Associate Professor Marine Geology and Geophysics RSMAS University of Miami Tel: The purpose of this course is to familiarize you with the fundamentals of near-surface geophysical site

  14. Department of Mechanical Engineering Fall 2011 Flowserve Vibration Energy Harvesting

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Mechanical Engineering Fall 2011 Flowserve Vibration Energy Harvesting of these vibrations, Flowseve is looking at using vibration absorbers coupled with energy harvesting technology a steady state DC output The prototype was created using water jet cutting and milling to create the parts

  15. Magazine of Extension research & education Fall 2013 Safer food, from

    E-Print Network [OSTI]

    Netoff, Theoden

    roadmap to economic success Mark Seeley ChartS MinneSota'S Changing CliMate Seeing Patterns 4-H alumni creates a stronger Minnesota 8 The roadmap to economic success 9 Hands-on nutrition education gets results Magazine of Extension research & education Fall 2013 Safer food, from farm to fork Community roadmap

  16. Fall 2011 BOSTONIA 23 In 2009, Image Comics

    E-Print Network [OSTI]

    Spence, Harlan Ernest

    Fall 2011 BOSTONIA 23 In 2009, Image Comics issued a comic book with a cover depicting Barack Obama's real-life end, but the al-Qaeda leader's demise made the Obama-Osama cover a collector's item that now introduced Dust, a Muslim "mutant," or superhuman member of the famed X-Men, only her eyes visible behind her

  17. Transportation Policy Analysis and Systems Planning Fall 2009/2010

    E-Print Network [OSTI]

    Singh, Jaswinder Pal

    SYLLABUS WWS 527a Transportation Policy Analysis and Systems Planning Fall 2009/2010 Course Description Part 1. Perspective on the Transportation Sector of the Economy: Its Function, Its Players, Its of Course Elements of the transportation sector of the economy, the player, the technologies

  18. Department of Industrial Engineering Fall 2011 Terminal Development

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Industrial Engineering Fall 2011 Terminal Development Overview The group as a terminal used for "automated order and payment" in a restaurant or retail setting, replacing a quality finished product. Approach Researched similar terminal products, such as Sheetz ordering system

  19. Soil Properties, Surveys, and Applications GEOG 3220 Fall 2009

    E-Print Network [OSTI]

    Lecce, Scott A.

    Soil Properties, Surveys, and Applications GEOG 3220 Fall 2009 Dr. Scott Lecce Office: A-235, Elements of the Nature and Properties of Soils Course Description: The purpose of this course is to provide a general introduction to soil science for students interested in environmental studies. It is taught from

  20. FRE 306: Global Food Markets Fall Term 2008

    E-Print Network [OSTI]

    Farrell, Anthony P.

    markets such as the introduction of genetically modified foods and the increased importance of food safetyFRE 306: Global Food Markets Fall Term 2008 Instructor: Rick Barichello Rm 339 MacMillan Building Telephone: 822-3473 E-Mail: richard.barichello@ubc.ca Learning Objectives: o Understanding of how food

  1. Gender Studies Graduate Student Library Orientation, Fall 2012

    E-Print Network [OSTI]

    Graham, Nick

    collection based on Library of Congress Classification. Depending on your research focus you may require1 Gender Studies Graduate Student Library Orientation, Fall 2012 Research Resources Librarian for Gender Studies: Sylvia Andrychuk andrychs@queensu.ca Office: Stauffer Library, room 107C Queen

  2. Course Syllabus-Undergrads SWS 4207/5208, Fall 2013

    E-Print Network [OSTI]

    Ma, Lena

    Management 3 Credits, MWF, Period 3 Instructor: George Hochmuth, Professor, IFAS, Soil and Water ScienceCourse Syllabus-Undergrads SWS 4207/5208, Fall 2013 Sustainable Agricultural and Urban Land contamination depends on adopting best management practices (BMPs) for land and nutrient management in the urban

  3. Course Syllabus-Undergrads SWS 4207/5208, Fall 2014

    E-Print Network [OSTI]

    Ma, Lena

    Management 3 Credits, MWF, Period 3 Instructor: George Hochmuth, Professor, IFAS, Soil and Water Science research literature dealing with sustainability of agriculture and urban land management. Class format: AllCourse Syllabus-Undergrads SWS 4207/5208, Fall 2014 Sustainable Agricultural and Urban Land

  4. www.mrs.org/fall2006/ CALL FOR PAPERS

    E-Print Network [OSTI]

    Akhmedov, Azer

    of recent advances in the solid-state chemistry of porous, nano-, and bulk inorganic materials methods of synthesis · Functional materials: optical, optoelectronic, polar, dielectric, ferroelectricwww.mrs.org/fall2006/ CALL FOR PAPERS MRS Symposium QQ: Solid-State Chemistry of Inorganic

  5. ECOLOGY ABIO 320 FALL 2013 DR. CARACO BIOLOGY 253

    E-Print Network [OSTI]

    Caraco, Thomas

    1 ECOLOGY ABIO 320 FALL 2013 DR. CARACO BIOLOGY 253 Course Web Page: www Scores Links to Lectures #12;2 Texts Gotelli, NJ. A Primer of Ecology. 4 th Edit., 2008 (Required ) Alstad, D. Basic Populus Models of Ecology. 2001 [Rec ] Link to Download Populus on Course Web Page

  6. ECE 451 -Fall 2011 Physics of Semiconductor Devices (3)

    E-Print Network [OSTI]

    Gilchrist, James F.

    ECE 451 - Fall 2011 Physics of Semiconductor Devices (3) Electronics and Optoelectronics-Photon Scattering Processes (Optional) 18. Novel Optoelectronics and Electronics Devices (Optional) Structure on Semiconductor Physics and Device Physics, Draft Version (2010). Other Additional References or Readings: 1. J

  7. Thermo Exam 1 pg 1 Fall 2010 RED barcode here

    E-Print Network [OSTI]

    Hart, Gus

    Thermo Exam 1 ­ pg 1 Fall 2010 RED barcode here Physics 123 section 2 Exam 1 Colton 2-3669 Please otherwise instructed, give all numerical answers for the worked problems in SI units, to 3 or 4 significant not get this test booklet back. #12;Thermo Exam 1 ­ pg 2 (15 pts) Problem 1: Multiple choice conceptual

  8. Page 1 of 8 CHEM 3311, Fall 2011

    E-Print Network [OSTI]

    Walba, David

    Page 1 of 8 CHEM 3311, Fall 2011 Professor Walba First Hour Exam September 22, 2011 scores: 1) 20 2) 20 3) 20 4) 25 5) 15 PLEASE read the questions very carefully! H He Li Be B C N O F Na Mg Al Si P: ________________________________ Recitation day and time: _____________________________ This is a closed-book exam. The use of notes

  9. Page 1 of 8 CHEM 3311, Fall 2011

    E-Print Network [OSTI]

    Walba, David

    Page 1 of 8 CHEM 3311, Fall 2011 Professor Walba Second Hour Exam October 20, 2011 scores: 1) 20 2) 20 3) 20 4) 20 5) 20 100 PLEASE read the questions very carefully! H He Li Be B C N O F Na Mg Al Si P: ________________________________ Recitation day and time: _____________________________ This is a closed-book exam. The use of notes

  10. Exam 1 Phys 105 Section______Fall 2002 Name__________________________________ ID

    E-Print Network [OSTI]

    Gary, Dale E.

    Exam 1 Phys 105 Section______Fall 2002 Name__________________________________ ID: Closed book exam each. Work out problems are 4 points each. Passing of the exam requires at least 50% of the maximum an expression, a t2 /2 where a is acceleration and t is time. The dimension of this expression in the SI system

  11. College of the Holy Cross Math 125, Fall 2008

    E-Print Network [OSTI]

    Jones, Rafe

    College of the Holy Cross Math 125, Fall 2008 Prof. Jones December 2, 2008 Exam 3 Name: 56tv Total #12;Math 125 Exam 3 2 1. [12 points] Let f be the function whose graph is pictured below (note need to estimate some endpoints. y ~((x) SI 1>0) f

  12. Thermo Exam 2 pg 1 Fall 2010 RED barcode here

    E-Print Network [OSTI]

    Hart, Gus

    Thermo Exam 2 ­ pg 1 Fall 2010 RED barcode here Physics 123 section 2 Exam 2 Colton 2-3669 Please in SI units, to 3 or 4 significant digits. For answers that rely on intermediate results, remember to write down your CID at the top of the page? _________ #12;Thermo Exam 1 ­ pg 2 (15 pts) Problem 1

  13. Math 103A Fall 2006 Exam 1 NAME: Answers

    E-Print Network [OSTI]

    Rogalski, Daniel

    Math 103A Fall 2006 Exam 1 NAME: Answers Problem 1 /30 Problem 2 /20 Problem 3 /30 Problem 4 /20 given by counterclockwise rotation by i degrees. Each Si is a reflection about an axis of symmetry of the square, labeled as follows: (On the actual exam, pictures indicated the axis of reflection

  14. Math 103A Fall 2007 Exam 1 October 31, 2007

    E-Print Network [OSTI]

    Rogalski, Daniel

    Math 103A Fall 2007 Exam 1 October 31, 2007 NAME: Problem 1 /30 Problem 2 /25 Problem 3 /25 Problem of the square given by counterclockwise rotation by i degrees. Each Si is a reflection about an axis of symmetry

  15. Page 1 of 9 CHEM 3311, Fall 2011

    E-Print Network [OSTI]

    Walba, David

    Page 1 of 9 CHEM 3311, Fall 2011 Professor Walba Third Hour Exam November 17, 2011 scores: 1) 20 2) 20 3) 20 4) 20 5) 20 100 PLEASE read the questions very carefully! H He Li Be B C N O F Na Mg Al Si P: ________________________________ Recitation day and time: _____________________________ This is a closed-book exam. The use of notes

  16. Course Syllabus -BCT 191A -Fall, 2011 The Built Environment

    E-Print Network [OSTI]

    Schweik, Charles M.

    Course Syllabus - BCT 191A - Fall, 2011 The Built Environment Instructor: David T. Damery Office, Holdsworth 110 TEXT & MATERIALS: Reshaping the Built Environment: Ecology, Ethics and Economics, edited the issues of sustainability from the perspective of the built environment, our history of construction

  17. Statistics 36-756: Advanced Statistics II Syllabus: Fall, 2006

    E-Print Network [OSTI]

    Fienberg, Stephen E.

    , Journal of the American Statistical Association, Journal of the Royal Statistical Society, StatisticalStatistics 36-756: Advanced Statistics II Syllabus: Fall, 2006 Instructor: Stephen E. Fienberg 132G: · To consider major topics from statistical theory and the foundations of inference not covered in Statistics 36

  18. LIBRARY RESOURCES & SERVICES New Graduate Student Orientation, Fall 2011

    E-Print Network [OSTI]

    LIBRARY RESOURCES & SERVICES New Graduate Student Orientation, Fall 2011 Stony Brook University Libraries #12;FAST FACTS 2 million books 65,000+ eJournals 300+ subscription databases online 10,000+ eBooks Main Library Humanities, Arts , Social Sciences Branch Libraries Chemistry Math/Physics MASIC

  19. Civil Engineering Flowchart Colorado State University Effective Fall 2009

    E-Print Network [OSTI]

    Freshman CIVE 102 MATH 160 PH 141 (MATH161) Spring CIVE 103 - 3 S Eng Graphics & Comp MATH 161 - 4 Calculus CIVE 300 CHEM 113 CIVE 367 Fall CIVE 402 - 3 F Sen Design Prin CIVE 438 - 3 F,S Pollution Control CIVE

  20. Snake River Fall Chinook Salmon Productivity Nez Perce Tribe

    E-Print Network [OSTI]

    Snake River Fall Chinook Salmon Productivity Jay Hesse Nez Perce Tribe Department of Fisheries salmon abundance and productivity have been and continue to be influenced by construction and operation related to productivity; (1) adult abundance, (2) hatchery programs, (3) management actions, and (4

  1. Chemistry 100 Fall 2011 Page 1 of 5

    E-Print Network [OSTI]

    Indiana University

    Chemistry 100 ­ Fall 2011 Page 1 of 5 The World of Chemistry ­ Course Syllabus Instructor Kirkwood Hall 212 Texts: Required: Chemistry in Context (CC) Course information is online through OnCourse. Course Objective(s): The primary goal of this course is to teach you about the chemistry that surrounds

  2. POVERTY IN THE UNITED STATES Sociology 3505, Fall 2013

    E-Print Network [OSTI]

    Stephens, Jacqueline

    POVERTY IN THE UNITED STATES Sociology 3505, Fall 2013 Tuesdays and Thursdays, 9:00-10:20 AM 214 __________________________________________________________________________________ COURSE DESCRIPTION This course examines the nature and extent of poverty in the United States. Students will gain familiarity with poverty issues as we review topics such as people`s views of poverty, poverty

  3. COMPUTER ALGEBRA FOR ELECTRICAL & COMPUTER ENGINEERS FALL SEMESTER 2010

    E-Print Network [OSTI]

    Kalla, Priyank

    COMPUTER ALGEBRA FOR ELECTRICAL & COMPUTER ENGINEERS FALL SEMESTER 2010 Instructor: Prof. Priyank.ece.utah.edu/~kalla List of Topics to be covered in Class: 1. Commutative Algebra Basics · Preliminaries: Groups, Rings [or Class project ideas] · Model checking using algebraic geometry · Recent work on verification

  4. Physics 137, Section 1, Fall Semester Severe and Hazardous Weather

    E-Print Network [OSTI]

    Hart, Gus

    Physics 137, Section 1, Fall Semester Severe and Hazardous Weather OBSERVATION PROJECTS During project or present one TV-type weather forecast. A list of a few possible observational projects is here of the project, information in the report might include times, dates and places of observations; weather

  5. Charges for Technology Fall 2014 / Spring 2015 / Summer 2015

    E-Print Network [OSTI]

    Charges for Technology Fall 2014 / Spring 2015 / Summer 2015 Part Full Part Full Agricultural/A N/A No Veterinary Medicine & Biomedical Sciences 7.50 90.00 N/A N/A No Charges for Technology are assessed to students based on their declared major/program to support college technology needs for students

  6. Alex Linares UPP 502, Planning Skills, Fall 2012

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    and brickyards. In 1852, the opening of the Rock Island railroad also contributed to Blue Island's growth. Blue to block traffic on the Rock Island rail line. On June 30th , 1894, two workers blocked the Rock Island. Source: 2005 Land Use Inventory, Version 1.0, CMAP #12;Alex Linares UPP 502, Planning Skills, Fall 2012

  7. CONDUCTION HEAT TRANSFER Dr. Ruhul Amin Fall 2011

    E-Print Network [OSTI]

    Dyer, Bill

    ME 525 CONDUCTION HEAT TRANSFER Dr. Ruhul Amin Fall 2011 Office: 201C Roberts Hall Lecture Room of conduction heat transfer. Important results which are useful for engineering application will also: 121 Roberts Hall Phone: 994-6295 Lecture Periods: 12:45- 2:00, TR TEXT: Heat Conduction, M. N. Ozisik

  8. Energy and Society Fall 2014 Problem Set 6

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Energy and Society Fall 2014 Problem Set 6 ER100 105 points ER 200 113 points 1. Comparing PV costs system and the levelized cost of solar energy in San Francisco, CA (2,500 kWh/m2 - year); New York City for calculating the levelized cost of electricity. [6 points] 2. Wind Power Analysis [18 points grad, 10 points

  9. Effective Fall 2014 Requirements for the Urban Architecture and

    E-Print Network [OSTI]

    Effective Fall 2014 8.20.14 Requirements for the Urban Architecture and Urban Design Specialization Required Core Courses: (13 credits) ________ ARCH 507 Sustainable Urbanism (3 credits) ________ ARCH 535 as part of the urban architecture specialization in Portland. In the case that one or more of these course

  10. CSU ATS703 Fall 2012 Numerical Weather Prediction

    E-Print Network [OSTI]

    CSU ATS703 Fall 2012 Numerical Weather Prediction ATS703 is based on the course notes and papers method. A crucial element of accurate weather prediction is initialization, which is briefly discussed in Chapter 11. In the next decade, numerical weather prediction will expe- rience a revolution in model

  11. EEE 6397 Semiconductor Device Theory (Fall, 2014, 5th

    E-Print Network [OSTI]

    Fang, Yuguang "Michael"

    1 EEE 6397 Semiconductor Device Theory (Fall, 2014, 5th period MWF, BEN328) Goals: (1) Develop fundamental understanding on the device physics of the most important semiconductor devices, such as PN junctions, metal-semiconductor contacts, metal-oxide-semiconductor capacitors, and field-effect transistors

  12. Top 50 Textbook Reserves List University Libraries, Fall 2014

    E-Print Network [OSTI]

    Gruner, Daniel S.

    Top 50 Textbook Reserves List University Libraries, Fall 2014 Alphabetical By Course Ask for the books at the McKeldin Library Services Desk! [Note to staff: Call # is course code and beginning Project Management (6th ed) 9781285068374 ENES 210 FCH1 Pratt/Green Entrepreneurial Strategic Decision

  13. Advanced Calculus I (Math 309) Fall 2005 Lecture Notes

    E-Print Network [OSTI]

    Bohner, Martin

    ); (iii) invertible if f is both one-to-one and onto, and then f-1 : Y X is called the inverse function the composite function of f and g. Proposition 1.11. A function f : X Y is invertible iff there existsAdvanced Calculus I (Math 309) Fall 2005 Lecture Notes Martin Bohner Version from December 4, 2005

  14. 15PCI Journal | Fall 2012 2012PCIJournalAwardsannounced

    E-Print Network [OSTI]

    15PCI Journal | Fall 2012 2012PCIJournalAwardsannounced Each year, PCI bestows four awards on authors of outstanding papers published in the PCI Journal during the previous 12 months. The award-winning papers are selected by the Journal Awards Committee, which is chaired by Paul C. Breeze. The awards

  15. Geology 103 The Dynamic Earth Syllabus and Schedule Fall 2007

    E-Print Network [OSTI]

    Kirby, Carl S.

    Geology 103 ­ The Dynamic Earth Syllabus and Schedule ­ Fall 2007 Dr. Carl Kirby 9:30-10:52 TTh O'Leary 232 Office: 226 O'Leary Lab T or Th 1-5 O'Leary 218 www.facstaff.bucknell.edu/kirby/ 577-1385; kirby

  16. BEE 4710. Introduction to Groundwater Fall Semester 2006

    E-Print Network [OSTI]

    Walter, M.Todd

    BEE 4710. Introduction to Groundwater Fall Semester 2006 Credit: 3 hours Catalogue description: Introduction, Field trip in afternoon Principles of groundwater flow Flow to Wells Properties of aquifiers Soil occurrence Groundwater models Water Quality Groundwater quality monitoring Vadose water quality monitoring

  17. University of California, Berkeley Fall 2003 Energy and Resources Group

    E-Print Network [OSTI]

    Kammen, Daniel M.

    themes in the class will include gender and energy, renewable energy alternatives, risk managementUniversity of California, Berkeley Fall 2003 Energy and Resources Group Advanced Graduate Seminar Public Policy 290 - Energy and Development Professor Daniel M. Kammen Energy and Resources Group

  18. National Small Business Federal Contracting Summit-DC Fall Conference

    Broader source: Energy.gov [DOE]

    The 2014 National Small Business Federal Contracting Summit - DC Fall Conference is presented jointly by the National Association of Small Business Contractors (the Supplier Council of The American Small Business Chamber of Commerce) and the U.S. Women's Chamber of Commerce in Washington DC.

  19. Larry H. & Gail Miller Enrichment Scholarship Fall 2015 Application Information

    E-Print Network [OSTI]

    Feschotte, Cedric

    Larry H. & Gail Miller Enrichment Scholarship Fall 2015 Application Information The University benefits and enriches the educational experiences of all students, faculty and staff. Thus the U strives/leadership service. The Miller Enrichment Scholarship award may include any or all of the following benefits: Full

  20. Fermi velocity renormalization and dynamical gap generation in graphene

    E-Print Network [OSTI]

    C. Popovici; C. S. Fischer; L. von Smekal

    2015-01-12T23:59:59.000Z

    We study the renormalization of the Fermi velocity by the long-range Coulomb interactions between the charge carriers in the Dirac-cone approximation for the effective low-energy description of the electronic excitations in graphene at half filling. Solving the coupled system of Dyson-Schwinger equations for the dressing functions in the corresponding fermion propagator with various approximations for the particle-hole polarization we observe that Fermi velocity renormalization effects generally lead to a considerable increase of the critical coupling for dynamical gap generation and charge-density wave formation at the semimetal-insulator transition.

  1. Edge Turbulence Velocity Changes with Lithium Coating on NSTX

    SciTech Connect (OSTI)

    Cao, A.; Zweben, S. J.; Stotler, D. P.; Bell, M.; Diallo, A.; Kaye, S. M.; LeBlanc, B.

    2012-08-10T23:59:59.000Z

    Lithium coating improves energy confinement and eliminates edge localized modes in NSTX, but the mechanism of this improvement is not yet well understood. We used the gas-puff-imaging (GPI) diagnostic on NSTX to measure the changes in edge turbulence which occurred during a scan with variable lithium wall coating, in order to help understand the reason for the confinement improvement with lithium. There was a small increase in the edge turbulence poloidal velocity and a decrease in the poloidal velocity fluctuation level with increased lithium. The possible effect of varying edge neutral density on turbulence damping was evaluated for these cases in NSTX. __________________________________________________

  2. ELECTROSTATIC MODE ASSOCIATED WITH PINCH VELOCITY IN RFPS

    SciTech Connect (OSTI)

    DELZANNO, GIAN LUCA [Los Alamos National Laboratory; FINN, JOHN M. [Los Alamos National Laboratory; CHACON, LUIS [Los Alamos National Laboratory

    2007-02-08T23:59:59.000Z

    The existence of a new electrostatic instability is shown for RFP (reversed field pinch) equilibria. This mode arises due to the non-zero equilibrium radial flow (pinch flow). In RFP simulations with no-stress boundary conditions on the tangential velocity at the radial wall, this electrostatic mode is unstable and dominates the nonlinear dynamics, even in the presence of the MHD modes typically responsible for the reversal of the axial magnetic field at edge. Nonlinearly, this mode leads to two beams moving azimuthally towards each other, which eventually collide. The electrostatic mode can be controlled by using Dirichlet (no-slip) boundary conditions on the azimuthal velocity at the radial wall.

  3. Extreme Value Analysis of Tidal Stream Velocity Perturbations

    SciTech Connect (OSTI)

    Harding, Samuel; Thomson, Jim; Polagye, Brian; Richmond, Marshall C.; Durgesh, Vibhav; Bryden, Ian

    2011-04-26T23:59:59.000Z

    This paper presents a statistical extreme value analysis of maximum velocity perturbations from the mean flow speed in a tidal stream. This study was performed using tidal velocity data measured using both an Acoustic Doppler Velocimeter (ADV) and an Acoustic Doppler Current Profiler (ADCP) at the same location which allows for direct comparison of predictions. The extreme value analysis implements of a Peak-Over-Threshold method to explore the effect of perturbation length and time scale on the magnitude of a 50-year perturbation.

  4. Velocity determination of the very shallow lunar crust

    E-Print Network [OSTI]

    Yen, Tzuhua Edward

    1979-01-01T23:59:59.000Z

    , 1972 and 1974 ) for the Apollo 16 and 17 landing sites, respectively. A deep layer of dust on the moon may provide a very good seismic-wave transmission channel. In order to investigate the seismic properties of such a medium, Gold and Soter (1970...) at the Apollo 14 and 16 landing sites has been determined to be a self-compacting powder layer overlying a homogeneous layer. The velocity function of the powder layer is given by V(z)=V (z/z ) , where V =340+20 m/sec is a reference 1/6 0 0 0 velocity at a...

  5. Source shape determination with directional fragment-fragment velocity correlations

    E-Print Network [OSTI]

    Lefèvre, A; Auger, G; Begemann-Blaich, M L; Bellaize, N; Bittiger, R; Bocage, F; Borderie, B; Bougault, R; Bouriquet, B; Charvet, J L; Chbihi, A; Dayras, R; Durand, D; Frankland, J D; Galíchet, E; Gourio, D; Guinet, D; Hudan, S; Lautesse, P; Lavaud, F; Legrain, R; López, O; Lukasik, J; Lynen, U; Müller, W F J; Nalpas, L; Orth, H; Plagnol, E; Rosato, E; Saija, A; Sfienti, C; Tamain, B; Trautmann, W; Trzcinski, A; Turzó, K; Vient, E; Vigilante, M; Volant, C; Zwieglinski, B

    2008-01-01T23:59:59.000Z

    Correlation functions, constructed from directional projections of the relative velocities of fragments, are used to determine the shape of the breakup volume in coordinate space. For central collisions of 129Xe + natSn at 50 MeV per nucleon incident energy, measured with the 4pi multi-detector INDRA at GSI, a prolate shape aligned along the beam direction with an axis ratio of 1:0.7 is deduced. The sensitivity of the method is discussed in comparison with conventional fragment-fragment velocity correlations.

  6. Impact of Phase Transitions on P Wave Velocities

    SciTech Connect (OSTI)

    D Weidner; L Li

    2011-12-31T23:59:59.000Z

    In regions where a high pressure phase is in equilibrium with a low pressure phase, the bulk modulus defined by the P-V relationship is greatly reduced. Here we evaluate the effect of such transitions on the P wave velocity. A model, where cation diffusion is the rate limiting factor, is used to project laboratory data to the conditions of a seismic wave propagating in the two-phase region. We demonstrate that for the minimum expected effect there is a significant reduction of the seismic velocity, as large as 10% over a narrow depth range.

  7. Long-term surveillance plan for the Falls City Disposal Site, Falls City, Texas. Revision 2

    SciTech Connect (OSTI)

    NONE

    1996-11-01T23:59:59.000Z

    The need for ground water monitoring at the Falls City disposal site was evaluated in accordance with NRC regulations and guidelines established by the DOE in Guidance for Implementing the Long-term Surveillance Program for UMTRA Project Title 1 Disposal Sites (DOE, 1996). Based on evaluation of site characterization data, it has been determined that a program to monitor ground water for demonstration of disposal cell performance based on a set of concentration limits is not appropriate because ground water in the uppermost aquifer is of limited use, and a narrative supplemental standard has been applied to the site that does not include numerical concentration limits or a point of compliance. The limited use designation is based on the fact that ground water in the uppermost aquifer is not currently or potentially a source of drinking water in the area because it contains widespread ambient contamination that cannot be cleaned up using methods reasonably employed by public water supply systems. Background ground water quality varies by orders of magnitude since the aquifer is in an area of redistribution of uranium mineralization derived from ore bodies. The DOE plans to perform post-closure ground water monitoring in the uppermost aquifer as a best management practice (BMP) as requested by the state of Texas.

  8. FAILED-DETONATION SUPERNOVAE: SUBLUMINOUS LOW-VELOCITY Ia SUPERNOVAE AND THEIR KICKED REMNANT WHITE DWARFS WITH IRON-RICH CORES

    SciTech Connect (OSTI)

    Jordan, George C. IV; Van Rossum, Daniel R. [Center for Astrophysical Thermonuclear Flashes, University of Chicago, Chicago, IL 60637 (United States); Perets, Hagai B. [Physics Department, Technion, Israel Institute of Technology, Haifa 32000 (Israel); Fisher, Robert T. [Department of Physics, University of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, MA 02740 (United States)

    2012-12-20T23:59:59.000Z

    Type Ia supernovae (SNe Ia) originate from the thermonuclear explosions of carbon-oxygen (C-O) white dwarfs (WDs). The single-degenerate scenario is a well-explored model of SNe Ia where unstable thermonuclear burning initiates in an accreting, Chandrasekhar-mass WD and forms an advancing flame. By several proposed physical processes, the rising, burning material triggers a detonation, which subsequently consumes and unbinds the WD. However, if a detonation is not triggered and the deflagration is too weak to unbind the star, a completely different scenario unfolds. We explore the failure of the gravitationally confined detonation mechanism of SNe Ia, and demonstrate through two-dimensional and three-dimensional simulations the properties of failed-detonation SNe. We show that failed-detonation SNe expel a few 0.1 M{sub Sun} of burned and partially burned material and that a fraction of the material falls back onto the WD, polluting the remnant WD with intermediate-mass and iron-group elements that likely segregate to the core forming a WD whose core is iron rich. The remaining material is asymmetrically ejected at velocities comparable to the escape velocity from the WD, and in response, the WD is kicked to velocities of a few hundred km s{sup -1}. These kicks may unbind the binary and eject a runaway/hypervelocity WD. Although the energy and ejected mass of the failed-detonation SN are a fraction of typical thermonuclear SNe, they are likely to appear as subluminous low-velocity SNe Ia. Such failed detonations might therefore explain or are related to the observed branch of peculiar SNe Ia, such as the family of low-velocity subluminous SNe (SN 2002cx/SN 2008ha-like SNe).

  9. Hydraulic Characteristics of the Lower Snake River During Periods of Juvenile Fall Chinook Migration

    SciTech Connect (OSTI)

    Cook, Chris B.; Dibrani, Berhon; Richmond, Marshall C.; Bleich, Matthew D.; Titzler, P. Scott; Fu, Tao

    2006-01-30T23:59:59.000Z

    This report documents a four-year study to assess hydraulic conditions in the lower Snake River. The work was conducted for the Bonneville Power Administration, U.S. Department of Energy, by the Pacific Northwest National Laboratory. Cold water released from the Dworshak Reservoir hypolimnion during mid- to late-summer months cools the Clearwater River far below equilibrium temperature. The volume of released cold water augments the Clearwater River, and the combined total discharge is on the order of the Snake River discharge when the two rivers meet at their confluence near the upstream edge of Lower Granite Reservoir. With typical temperature differences between the Clearwater and Snake rivers of 10°C or more during July and August, the density difference between the two rivers during summer flow augmentation periods is sufficient to stratify Lower Granite Reservoir as well as the other three reservoirs downstream. Because cooling of the river is desirable for migrating juvenile fall Chinook salmon (Oncorhynchus tshawytscha) during this same time period, the amount of mixing and cold water entrained into Lower Granite Reservoir’s epilimnion at the Clearwater/Snake River confluence is of key biological importance to juvenile fall Chinook salmon. Data collected during this project indicates the three reservoirs downstream of Lower Granite also stratify as direct result of flow augmentation from Dworshak Reservoir. These four lower Snake reservoirs are also heavily influenced by wind forcing at the water’s surface, and during periods of low river discharge, often behave like a two-layer lake. During these periods of stratification, lower river discharge, and wind forcing, the water in the upper layer of the reservoir is held in place or moves slightly upstream. This upper layer is also exposed to surface heating and may warm up to temperatures close to equilibrium temperature. The depth of this upper warm layer and its direction of travel may also be of key biological importance to juvenile fall Chinook salmon. This report describes field data collection, modeling, and analysis of hydrodynamic and temperature conditions in the Lower Granite Reservoir during the summer flow augmentation periods of 2002, 2003, and 2004 plus a brief one-week period in 2005 of Lower Monumental, Little Goose, and Lower Granite Reservoirs. Circulation patterns in all four lower Snake River reservoirs were numerically simulated for periods of 2002, 2003, 2004, and 2005 using CE-QUAL-W2. Simulation results show that these models are sufficiently capable of matching diurnal and long term temperature and velocity changes in the reservoirs. In addition, the confluence zone of the Clearwater and Snake rivers was modeled using the 3-D model Flow3-D. This model was used to better understand mixing processing and entrainment. Once calibrated and validated, the reservoir models were used to investigate downstream impacts of alternative reservoir operation schemes, such as increasing or decreasing the ratio of Clearwater to Snake discharge. Simulation results were also linked with the particle tracking model FINS to better understand alterations of integrated metrics due to alternative operation schemes. These findings indicate that significant alterations in water temperature throughout the lower Snake River are possible by altering hypolimnetic discharges from Dworshak Reservoir and may have a significant impact on the behavior of migrating juvenile fall Chinook salmon during periods of flow augmentation.

  10. The Light Velocity Casimir Effect Does the Velocity of Light Increase when Propagating Between the Casimir Plates?

    E-Print Network [OSTI]

    Ostoma, T; Ostoma, Tom; Trushyk, Mike

    1999-01-01T23:59:59.000Z

    We propose experiments that might be set up to detect the increase in the velocity of light in a vacuum in the laboratory frame for photons travelling between (and perpendicular to) the Casimir plates in a vacuum. The Casimir plates are two closely spaced, conductive plates, where an attractive force is observed to exist between the plates called the 'Casimir Force'. We propose that the velocity of light in a vacuum increases when propagating between two transparent Casimir Plates. We call this effect the 'Light Velocity Casimir Effect' or LVC effect. The LVC effect happens because the vacuum energy density in between the plates is lower than that outside the Casimir plates. The conductive plates disallow certain frequencies of electrically charged virtual particles to exist inside the plates, thus lowering the inside vacuum particle density, compared to the density outside the plates. The reduced (electrically charged) virtual particle density results in fewer photon scattering events inside the plates, whic...

  11. ENG ME 404: Dynamics and control Fall 2011 ENG ME 404: Dynamics and Control of Mechanical Systems, Fall 2011

    E-Print Network [OSTI]

    Systems and control theory plays a vital role across most aspects of modern life. Control systemsENG ME 404: Dynamics and control Fall 2011 ENG ME 404: Dynamics and Control of Mechanical Systems and provide you a set of tools to analyze and design controllers. Elements of both state-space (modern

  12. ENG ME 404: Dynamics and control Fall 2014 ENG ME 404: Dynamics and Control of Mechanical Systems, Fall 2014

    E-Print Network [OSTI]

    Lin, Xi

    and control theory plays a vital role across most aspects of modern life. Control systems are found in yourENG ME 404: Dynamics and control Fall 2014 ENG ME 404: Dynamics and Control of Mechanical Systems a set of tools to analyze and design controllers. Elements of both state-space (modern) and frequency

  13. Investigation of plasma velocity field solar flare footpoints

    E-Print Network [OSTI]

    Mrozek, Tomasz

    of Wroclaw NCN Grant 2011/01/M/ST9/06096 #12;The Solar Flare - observations #12;chromosphere corona photosphere The Solar Flare - cartoon - conversion of magnetic energy into other forms - transport of energyInvestigation of plasma velocity field in solar flare footpoints from RHESSI observations T. Mrozek

  14. Estimating seismic velocities at ultrasonic frequencies in partially saturated rocks

    SciTech Connect (OSTI)

    Mavko, G.; Nolen-Hoeksema, R. (Stanford Univ., CA (United States). Dept. of Geophysics)

    1994-02-01T23:59:59.000Z

    Seismic velocities in rocks at ultrasonic frequencies depend not only on the degree of saturation but also on the distribution of the fluid phase at various scales within the pore space. Two scales of saturation heterogeneity are important: (1) saturation differences between thin compliant pores and larger stiffer pores, and (2) differences between saturated patches and undersaturated patches at a scale much larger than any pore. The authors propose a formalism for predicting the range of velocities in partially saturated rocks that avoids assuming idealized pore shapes by using measured dry rock velocity versus pressure and dry rock porosity versus pressure. The pressure dependence contains all of the necessary information about the distribution of pore compliance for estimating effects of saturation at the finest scales where small amounts of fluid in the thinnest, most compliant parts of the pore space stiffen the rock in both compression and shear (increasing both P- and S-wave velocities) in approximately the same way that confining pressure stiffens the rock by closing the compliant pores. Large-scale saturation patches tend to increase only the high-frequency bulk modulus by amounts roughly proportional to the saturation. The pore-scale effects will be most important at laboratory and logging frequencies when pore-scale pore pressure gradients are unrelaxed. The patchy-saturation effects can persist even at seismic field frequencies if the patch sizes are sufficiently large and the diffusivities are sufficiently low for the larger-scale pressure gradients to be unrelaxed.

  15. Scale-dependent seismic velocity in heterogeneous media

    SciTech Connect (OSTI)

    Mukerji, T.; Mavko, G.; Mujica, D. [Stanford Univ., CA (United States)] [Stanford Univ., CA (United States); Lucet, N. [IFP, Rueil-Malmaison (France)] [IFP, Rueil-Malmaison (France)

    1995-07-01T23:59:59.000Z

    The measurable traveltime of seismic events propagating in heterogeneous media depend on the geologic scale, the seismic wavelength, and the propagation distance. In general, the velocity inferred from arrival times is slower when the wavelength is longer than the scale of heterogeneity and faster when the wavelength is shorter. For normal incidence propagation in stratified media, this is the difference between averaging elastic compliance sin the long wavelength limit. In two and three dimensions there is also the path effect. Shorter wavelengths tend to find faster paths, thus biasing the traveltimes to lower values. In the shorter wavelength limit, the slowness inferred from the average traveltime is smaller than the mean slowness of the medium. When the propagation distance is much larger than the scale of the heterogeneity, the path effect causes the velocity increase from long to short wavelengths to be much larger in two dimensions than in one dimension, and even larger in three dimensions. The amount of velocity dispersion can be understood theoretically, but there is some discrepancy between theory and experiment as to what ratio of wavelength to heterogeneity scale separates the long and short wavelength limits. The scale-dependent traveltime implies that a measured velocity depends not just on rock properties, but also on the scale of the measurement relative to he scale of the geology.

  16. Velocity Autocorrelation Functions and Diffusion of Dusty Plasma

    SciTech Connect (OSTI)

    Ramazanov, T. S.; Dzhumagulova, K. N.; Daniyarov, T. T.; Dosbolayev, M. K.; Jumabekov, A. N. [IETP, al-Farabi Kazakh National University, 96a, Tole bi St., Almaty, 050012 (Kazakhstan)

    2008-09-07T23:59:59.000Z

    The velocity autocorrelation functions and square displacements were calculated on the basis of experimental data obtained on experimental setup with dc discharge. Computer simulation of the system of dust particles by the method of the Langevin dynamics was performed. The comparisons of experimental and theoretical results are given.

  17. Relativistic addition of parallel velocities from time dilation

    E-Print Network [OSTI]

    Bernhard Rothenstein; Stefan Popescu

    2006-08-11T23:59:59.000Z

    The relativistic addition of parallel velocities is derived involving relativity only via the time dilation formula, avoiding the length contraction used by many authors in conjunction with time dilation. The followed scenario involves a machine gun that fires successive bullets, considered from its rest frame and from the rest frame of the target, the bullets hit.

  18. VELOCITY FIELD OF A ROUND TURBULENT TRANSVERSE JET Suman Muppidi

    E-Print Network [OSTI]

    Mahesh, Krishnan

    - bulent jet in a laminar crossflow. The velocity ratio is 5.7 and the Reynolds number is 5000. Mean Jets in crossflow, also called `transverse jets' are defined as the flow field where a jet of fluid enters and interacts with a crossflowing fluid. Examples of jets in crossflow are fuel injectors

  19. Brady 1D seismic velocity model ambient noise prelim

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mellors, Robert J.

    Preliminary 1D seismic velocity model derived from ambient noise correlation. 28 Green's functions filtered between 4-10 Hz for Vp, Vs, and Qs were calculated. 1D model estimated for each path. The final model is a median of the individual models. Resolution is best for the top 1 km. Poorly constrained with increasing depth.

  20. Harmonic analysis of the Ha velocity field of NGC 4254

    E-Print Network [OSTI]

    Laurent Chemin; Olivier Hernandez; Chantal Balkowski; Claude Carignan; Philippe Amram

    2005-12-20T23:59:59.000Z

    The ionized gas kinematics of the Virgo Cluster galaxy NGC 4254 (Messier 99) is analyzed by an harmonic decomposition of the velocity field into Fourier coefficients. The aims of this study are to measure the kinematical asymmetries of Virgo cluster galaxies and to connect them to the environment. The analysis reveals significant $m=1,2,4$ terms which origins are discussed.

  1. Brady 1D seismic velocity model ambient noise prelim

    SciTech Connect (OSTI)

    Mellors, Robert J.

    2013-10-25T23:59:59.000Z

    Preliminary 1D seismic velocity model derived from ambient noise correlation. 28 Green's functions filtered between 4-10 Hz for Vp, Vs, and Qs were calculated. 1D model estimated for each path. The final model is a median of the individual models. Resolution is best for the top 1 km. Poorly constrained with increasing depth.

  2. LAMINAR BURNING VELOCITY OF GASOLINES WITH ADDITION OF ETHANOL

    E-Print Network [OSTI]

    Boyer, Edmond

    1 LAMINAR BURNING VELOCITY OF GASOLINES WITH ADDITION OF ETHANOL P. Dirrenberger1 , P.A. Glaude*1 WITH ADDITION OF ETHANOL P. Dirrenberger1 , P.A. Glaude*1 , R. Bounaceur1 , H. Le Gall1 , A. Pires da Cruz2 , A. The influence of ethanol as an oxygenated additive has been investigated for these two fuels and has been found

  3. Low Velocity Sphere Impact of a Soda Lime Silicate Glass

    SciTech Connect (OSTI)

    Wereszczak, Andrew A [ORNL; Fox, Ethan E [ORNL; Morrissey, Timothy G [ORNL; Vuono, Daniel J [ORNL

    2011-10-01T23:59:59.000Z

    This report summarizes TARDEC-sponsored work at Oak Ridge National Laboratory (ORNL) during the FY11 involving low velocity (< 30 m/s or < 65 mph) ball impact testing of Starphire soda lime silicate glass. The intent was to better understand low velocity impact response in the Starphire for sphere densities that bracketed that of rock. Five sphere materials were used: borosilicate glass, soda-lime silicate glass, steel, silicon nitride, and alumina. A gas gun was fabricated to produce controlled velocity delivery of the spheres against Starphire tile targets. Minimum impact velocities to initiate fracture in the Starphire were measured and interpreted in context to the kinetic energy of impact and the elastic property mismatch between the any of the five sphere-Starphire-target combinations. The primary observations from this low velocity (< 30 m/s or < 65 mph) testing were: (1) Frictional effects contribute to fracture initiation. (2) Spheres with a lower elastic modulus require less force to initiate fracture in the Starphire than spheres with a higher elastic modulus. (3) Contact-induced fracture did not initiate in the Starphire SLS for impact kinetic energies < 150 mJ. Fracture sometimes initiated or kinetic energies between {approx} 150-1100 mJ; however, it tended to occur when lower elastic modulus spheres were impacting it. Contact-induced fracture would always occur for impact energies > 1100 mJ. (4) The force necessary to initiate contact-induced fracture is higher under dynamic or impact conditions than it is under quasi-static indentation conditions. (5) Among the five used sphere materials, silicon nitride was the closest match to 'rock' in terms of both density and (probably) elastic modulus.

  4. Velocity distribution of high-energy particles and the solar neutrino problem

    E-Print Network [OSTI]

    Jian-Miin Liu

    2001-08-18T23:59:59.000Z

    High energy infers high velocity and high velocity is a concept of special relativity. The Maxwellian velocity distribution is corrected to be consistent with special relativity. The corrected distribution reduces to the Maxwellian distribution for small velocities, contains a relatively depleted high-energy tail and vanishes at the velocity of light. This corrected distribution will lower solar neutrino fluxes and change solar neutrino energy spectra but keep solar sound speeds.

  5. High velocity compact clouds in the sagittarius C region

    SciTech Connect (OSTI)

    Tanaka, Kunihiko; Oka, Tomoharu; Matsumura, Shinji [Department of Physics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama, Kanagawa 223-8522 (Japan); Nagai, Makoto [Division of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8571 (Japan); Kamegai, Kazuhisa, E-mail: ktanaka@phys.keio.ac.jp [Department of Industrial Administration, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 (Japan)

    2014-03-01T23:59:59.000Z

    We report the detection of extremely broad emission toward two molecular clumps in the Galactic central molecular zone. We have mapped the Sagittarius C complex (–0.°61 < l < –0.°27, –0.°29 < b < 0.°04) in the HCN J = 4-3, {sup 13}CO J = 3-2, and H{sup 13}CN J = 1-0 lines with the ASTE 10 m and NRO 45 m telescopes, detecting bright emission with 80-120 km s{sup –1} velocity width (in full-width at zero intensity) toward CO–0.30–0.07 and CO–0.40–0.22, which are high velocity compact clouds (HVCCs) identified with our previous CO J = 3-2 survey. Our data reveal an interesting internal structure of CO–0.30–0.07 comprising a pair of high velocity lobes. The spatial-velocity structure of CO–0.40–0.22 can be also understood as a multiple velocity component, or a velocity gradient across the cloud. They are both located on the rims of two molecular shells of about 10 pc in radius. Kinetic energies of CO–0.30–0.07 and CO–0.40–0.22 are (0.8-2) × 10{sup 49} erg and (1-4) × 10{sup 49} erg, respectively. We propose several interpretations of their broad emission: collision between clouds associated with the shells, bipolar outflow, expansion driven by supernovae (SNe), and rotation around a dark massive object. These scenarios cannot be discriminated because of the insufficient angular resolution of our data, though the absence of a visible energy source associated with the HVCCs seems to favor the cloud-cloud collision scenario. Kinetic energies of the two molecular shells are 1 × 10{sup 51} erg and 0.7 × 10{sup 51} erg, which can be furnished by multiple SN or hypernova explosions in 2 × 10{sup 5} yr. These shells are candidates of molecular superbubbles created after past active star formation.

  6. Method and apparatus for reading free falling dosimeter punchcodes

    DOE Patents [OSTI]

    Langsted, James M. (Golden, CO)

    1992-12-22T23:59:59.000Z

    A punchcode reader is provided for reading data encoded in a punchcode hole array on a dosimeter. The dosimeter falls through a passage in the reader containing photosensor detectors disposed along the passage which provide output signals to a microprocessor. The signals are processed to determine the orientation of the dosimeter in the reader, the location and state of punchcode holes in a two row array thereby decoding the encoded data. Multiple rate of fall calculations are made, and if appropriate matching of the punchcode array is not obtained in three tries, an error signal is outputted to the operator. The punchcode reader also provides for storage of data from multiple dosimeters passed through the reader, and for the output of decoded data to an external display or a computer for further processing.

  7. Method and apparatus for reading free falling dosimeter punchcodes

    DOE Patents [OSTI]

    Langsted, J.M.

    1992-12-22T23:59:59.000Z

    A punchcode reader is provided for reading data encoded in a punchcode hole array on a dosimeter. The dosimeter falls through a passage in the reader containing photosensor detectors disposed along the passage which provide output signals to a microprocessor. The signals are processed to determine the orientation of the dosimeter in the reader, the location and state of punchcode holes in a two row array thereby decoding the encoded data. Multiple rate of fall calculations are made, and if appropriate matching of the punchcode array is not obtained in three tries, an error signal is output to the operator. The punchcode reader also provides for storage of data from multiple dosimeters passed through the reader, and for the output of decoded data to an external display or a computer for further processing. 8 figs.

  8. Free falling and rising of spherical and angular particles

    SciTech Connect (OSTI)

    Rahmani, M., E-mail: mona.rahmani@ifpen.fr; Wachs, A., E-mail: anthony.wachs@ifpen.fr [Fluid Mechanics Department, IFP Energies nouvelles, Etablissement de Lyon, 69360 Solaize (France)

    2014-08-15T23:59:59.000Z

    Direct numerical simulations of freely falling and rising particles in an infinitely long domain, with periodic lateral boundary conditions, are performed. The focus is on characterizing the free motion of cubical and tetrahedral particles for different Reynolds numbers, as an extension to the well-studied behaviour of freely falling and rising spherical bodies. The vortical structure of the wake, dynamics of particle movement, and the interaction of the particle with its wake are studied. The results reveal mechanisms of path instabilities for angular particles, which are different from those for spherical ones. The rotation of the particle plays a more significant role in the transition to chaos for angular particles. Following a framework similar to that of Mougin and Magnaudet [“Wake-induced forces and torques on a zigzagging/spiralling bubble,” J. Fluid Mech. 567, 185–194 (2006)], the balance of forces and torques acting on particles is discussed to gain more insight into the path instabilities of angular particles.

  9. LBNL/ Adopt Fall Protection Program 2010 Here is the Company Letter Certification Template to address if your company has

    E-Print Network [OSTI]

    Eisen, Michael

    LBNL/ Adopt Fall Protection Program 2010 Here is the Company Letter Certification Template to address if your company has decided to work under LBNL fall protection program. See attached Chapter 30 protection matrix. All fall protection equipment will be inspected before work begins by LBNL SME of fall

  10. EA-1894: Albeni Falls Flexible Winter Lake Operations, Bonner, Idaho

    Broader source: Energy.gov [DOE]

    DOE’s Bonneville Power Administration and the U.S. Army Corps of Engineers, as co-lead Federal agencies, prepared this EA to evaluate the potential environmental impacts of a proposal to operate Albeni Falls dam during the winter months (approximately December 15th to March 31st) and determine whether the existing Columbia River System Operation Review EIS (DOE/EIS-0170) is adequate or a supplemental or new EIS is required.

  11. EIS-0156: Cowlitz Falls Final Environmental Impact Statement

    Broader source: Energy.gov [DOE]

    The Federal Energy Regulatory Commission prepared this statement to assess the environmental impacts of constructing and operating a proposed 70-megawatt hydroelectric dam and electrical infrastructure on the Cowlitz River near Morton and Randle, Washington. The U.S. Department of Energy's Bonneville Power Administration adopted this statement on 12/6/1990 to fulfil its National Environmental Policy Act requirement for its proposed action to acquire the power output from the Cowlitz Falls Hydroelectric Project.

  12. Energy and Society Fall 2013 Problem Set 1

    E-Print Network [OSTI]

    Kammen, Daniel M.

    the temperature and pressure, if known.) (3 points) g. How many square meters of solar panels (assume that the panels are placed in the Southwest in an area with an annual average solar radiation of 6.5 kWh/m2 /day, and that the solar panels have a conversion efficiency of 15%) (3 points) h. How many gallons of water that fall

  13. Page 1 of 8 CHEMISTRY 3311, Fall 2001

    E-Print Network [OSTI]

    Walba, David

    Name: Page 1 of 8 CHEMISTRY 3311, Fall 2001 Professor Walba Third Hour Exam November 15, 2001-book "open model" exam. You may use models, but no notes or books. Please put all your answers on the test. Use the backs of the pages for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6

  14. Advanced Calculus I (Math 309) Fall 2002 Lecture Notes

    E-Print Network [OSTI]

    Bohner, Martin

    is invertible iff there exists a function g : Y X with (f g)(y) = y y Y and (g f)(x) = x x X, and then gAdvanced Calculus I (Math 309) Fall 2002 Lecture Notes Martin Bohner Version from December 11, 2002. Preliminaries 1 0.1. Sets 1 0.2. Functions 1 0.3. Proofs 2 Chapter 1. The Real Number System 3 1.1. The Field

  15. Advanced Calculus I (Math 309) Fall 2003 Lecture Notes

    E-Print Network [OSTI]

    Bohner, Martin

    function of f and g. Proposition 0.9. A function f : X Y is invertible iff there exists a function g : YAdvanced Calculus I (Math 309) Fall 2003 Lecture Notes Martin Bohner Version from December 3, 2003. Preliminaries 1 0.1. Sets 1 0.2. Functions 1 0.3. Proofs 2 Chapter 1. The Real Number System 3 1.1. The Field

  16. MATH 2920: Fall 2013 Second-Half Review Topics

    E-Print Network [OSTI]

    Swigon, David

    MATH 2920: Fall 2013 Second-Half Review Topics Chapters: 7.1-7.3, 8.1-8.2, 9.1-9.3 Theory: Behavior Bendixson theorems (7.13, 7.16) and corollary (7.17) Definition and properties of )(X (Theorem 8.3) Definition and properties of stable and unstable sets )( W Definition and properties of an attracting set

  17. Geophysical test of the universality of free-fall

    E-Print Network [OSTI]

    Sachie Shiomi

    2008-11-24T23:59:59.000Z

    We point out that the universality of free-fall can be tested by observing surface-gravity changes of the Earth. The Earth's inner core is weakly coupled to the rest part of the Earth by mainly gravitational forces. If there were a violation of the universality of free-fall, because of their different chemical compositions and/or of different mass fractions of binding energies, the inner core and the rest part of the Earth would fall at different rates towards the Sun and other sources of gravitational fields. The differential acceleration could be observed as surface-gravity effects. By assuming a simple Earth model, we discuss the expected surface-gravity effects of violations of the universality and experiments to search for such effects by using superconducting gravimeters. It is shown that the universality can be tested to a level of 10$^{-9}$ using currently operating superconducting gravimeters. Some improvements can be expected from combinations of global measurements and applications of advanced data analyses.

  18. The critical velocity in the BEC-BCS crossover

    E-Print Network [OSTI]

    Wolf Weimer; Kai Morgener; Vijay Pal Singh; Jonas Siegl; Klaus Hueck; Niclas Luick; Ludwig Mathey; Henning Moritz

    2014-08-22T23:59:59.000Z

    We map out the critical velocity in the crossover from Bose-Einstein condensation (BEC) to Bardeen-Cooper-Schrieffer superfluidity with ultracold $^{6}$Li gases. A small attractive potential is dragged along lines of constant column density. The rate of the induced heating increases steeply above a critical velocity $v_c$. In the same samples, we measure the speed of sound $v_s$ by exciting density waves and compare the results to the measured values of $v_c$. We perform numerical simulations in the BEC regime and find very good agreement, validating the approach. In the strongly correlated regime, where theoretical predictions only exist for the speed of sound, our measurements of $v_c$ provide a testing ground for theoretical approaches.

  19. Velocity tuning of friction with two trapped atoms

    E-Print Network [OSTI]

    Gangloff, Dorian; Counts, Ian; Jhe, Wonho; Vuleti?, Vladan

    2015-01-01T23:59:59.000Z

    Friction is the basic, ubiquitous mechanical interaction between two surfaces that results in resistance to motion and energy dissipation. In spite of its technological and economic significance, our ability to control friction remains modest, and our understanding of the microscopic processes incomplete. At the atomic scale, mismatch between the two contacting crystal lattices can lead to a reduction of stick-slip friction (structural lubricity), while thermally activated atomic motion can give rise to a complex velocity dependence, and nearly vanishing friction at sufficiently low velocities (thermal lubricity). Atomic force microscopy has provided a wealth of experimental results, but limitations in the dynamic range, time resolution, and control at the single-atom level have hampered a full quantitative description from first principles. Here, using an ion-crystal friction emulator with single-atom, single substrate-site spatial resolution and single-slip temporal resolution, we measure the friction force...

  20. The AMS-RICH velocity and charge reconstruction

    E-Print Network [OSTI]

    F. Barao; M. Aguilar-Benitez; L. Arruda; B. Baret; A. Barrau; G. Barreira; E. Belmont; J. Berdugo; J. Borges; M. Buenerd; D. Casadei; J. Casaus; E. Cortina; M. Costado; D. Crespo; C. Delgado; C. Diaz; L. Derome; P. Goncalves; R. Garcia-Lopez; C. de la Guia; A. Herrero; E. Lanciotti; G. Laurenti; A. Malinin; C. Mana; J. Marin; M. Mangin-Brinet; G. Martinez; A. Menchaca-Rocha; C. Palomares; R. Pereira; M. Pimenta; A. Putze; Y. Sallaz-Damaz; E. S. Seo; I. Sevilla; A. Torrento; M. Vargas-Trevino; O. Veziant

    2007-09-13T23:59:59.000Z

    The AMS detector, to be installed on the International Space Station, includes a Ring Imaging Cerenkov detector with two different radiators, silica aerogel (n=1.05) and sodium fluoride (n=1.334). This detector is designed to provide very precise measurements of velocity and electric charge in a wide range of cosmic nuclei energies and atomic numbers. The detector geometry, in particular the presence of a reflector for acceptance purposes, leads to complex Cerenkov patterns detected in a pixelized photomultiplier matrix. The results of different reconstruction methods applied to test beam data as well as to simulated samples are presented. To ensure nominal performances throughout the flight, several detector parameters have to be carefully monitored. The algorithms developed to fulfill these requirements are presented. The velocity and charge measurements provided by the RICH detector endow the AMS spectrometer with precise particle identification capabilities in a wide energy range. The expected performances on light isotope separation are discussed.

  1. Velocity renormalization in graphene from lattice Monte Carlo

    E-Print Network [OSTI]

    Joaquín E. Drut; Timo A. Lähde

    2014-03-26T23:59:59.000Z

    We compute the Fermi velocity of the Dirac quasiparticles in clean graphene at the charge neutrality point for strong Coulomb coupling alpha_g. We perform a Lattice Monte Carlo calculation within the low-energy Dirac theory, which includes an instantaneous, long-range Coulomb interaction. We find a renormalized Fermi velocity v_FR > v_F, where v_F = c/300. Our results are consistent with a momentum-independent v_FR which increases approximately linearly with alpha_g, although a logarithmic running with momentum cannot be excluded at present. At the predicted critical coupling alpha_gc for the semimetal-insulator transition due to excitonic pair formation, we find v_FR/v_F = 3.3, which we discuss in light of experimental findings for v_FR/v_F at the charge neutrality point in ultra-clean suspended graphene.

  2. Predicting stress-induced velocity anisotropy in rocks

    SciTech Connect (OSTI)

    Mavko, G.; Mukerji, T.; Godfrey, N. [Stanford Univ., CA (United States). Rock Physics Lab.] [Stanford Univ., CA (United States). Rock Physics Lab.

    1995-07-01T23:59:59.000Z

    A simple transformation, using measured isotropic V{sub P} and V{sub S} versus hydrostatic pressure, is presented for predicting stress-induced seismic velocity anisotropy in rocks. The compliant, crack-like portions of the pore space are characterized by generalized compressional and shear compliances that are estimated form the isotropic V{sub P} and V{sub S}. The physical assumption that the compliant porosity is crack-like means that the pressure dependence of the generalized compliances is governed primarily by normal tractions resolved across cracks and defects. This allows the measured pressure dependence to be mapped form the hydrostatic stress state to any applied nonhydrostatic stress. Predicted P- and S-wave velocities agree reasonably well with uniaxial stress data for Barre Granite and Massillon Sandstone. While it is mechanically similar to methods based on idealized ellipsoidal cracks, the approach is relatively independent of any assumed crack geometry and is not limited to small crack densities.

  3. Low velocity ion stopping in binary ionic mixtures

    SciTech Connect (OSTI)

    Tashev, Bekbolat; Baimbetov, Fazylkhan [Department of Physics, Kazakh National University, Tole Bi 96, Almaty 480012 (Kazakhstan); Deutsch, Claude [LPGP (UMR-CNRS 8578), Universite Paris XI, 91405 Orsay (France); Fromy, Patrice [Direction de l'Informatique, Universite Paris XI, 91405 Orsay (France)

    2008-10-15T23:59:59.000Z

    Attention is focused on the low ion velocity stopping mechanisms in multicomponent and dense target plasmas built of quasiclassical electron fluids neutralizing binary ionic mixtures, such as, deuterium-tritium of current fusion interest, proton-heliumlike iron in the solar interior or proton-helium ions considered in planetology, as well as other mixtures of fiducial concern in the heavy ion beam production of warm dense matter at Bragg peak conditions. The target plasma is taken in a multicomponent dielectric formulation a la Fried-Conte. The occurrence of projectile ion velocities (so-called critical) for which target electron slowing down equals that of given target ion components is also considered. The corresponding multiquadrature computations, albeit rather heavy, can be monitored analytical through a very compact code operating a PC cluster. Slowing down results are systematically scanned with respect to target temperature and electron density, as well as ion composition.

  4. Maximum velocity of self-propulsion for an active segment

    E-Print Network [OSTI]

    Recho, Pierre

    2015-01-01T23:59:59.000Z

    The motor part of a crawling eukaryotic cell can be represented schematically as an active continuum layer. The main active processes in this layer are protrusion, originating from non-equilibrium polymerization of actin fibers, contraction, induced by myosin molecular motors and attachment due to active bonding of trans-membrane proteins to a substrate. All three active mechanisms are regulated by complex signaling pathways involving chemical and mechanical feedback loops whose microscopic functioning is still poorly understood. In this situation, it is instructive to take a reverse engineering approach and study a problem of finding the spatial organization of standard active elements inside a crawling layer ensuring an optimal cost-performance trade-off. In this paper we assume that (in the range of interest) the energetic cost of self-propulsion is velocity independent and adopt, as an optimality criterion, the maximization of the overall velocity. We then choose a prototypical setting, formulate the corr...

  5. THE RADIAL VELOCITY EXPERIMENT (RAVE): FOURTH DATA RELEASE

    SciTech Connect (OSTI)

    Kordopatis, G.; Gilmore, G. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA (United Kingdom); Steinmetz, M.; Williams, M. E. K.; Piffl, T.; Enke, H.; Carrillo, I. [Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam (Germany); Boeche, C.; Roeser, S. [Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstr. 12-14, D-69120 Heidelberg (Germany); Seabroke, G. M. [Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey, RH5 6NT (United Kingdom); Siebert, A. [Observatoire Astronomique de Strasbourg, Université de Strasbourg, CNRS, UMR 7550, 11 rue de l'Université, F-67000 Strasbourg (France); Zwitter, T. [Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana (Slovenia); Binney, J. [Rudolf Peierls Centre for Theoretical Physics, Keble Road, Oxford, OX1 3NP (United Kingdom); De Laverny, P.; Recio-Blanco, A.; Bijaoui, A. [Laboratoire Lagrange, UMR 7293, Université de Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur, BP4229, F-06304 Nice (France); Wyse, R. F. G. [Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States); Freeman, K. [Research School of Astronomy and Astrophysics, Australian National University, Cotter Road, Weston, ACT 2611 (Australia); Munari, U. [INAF National Institute of Astrophysics, Astronomical Institute of Padova, I-36012 Asiago (VI) (Italy); Anguiano, B., E-mail: gkordo@ast.cam.ac.uk [Australian Astronomical Observatory, P.O. Box 915, North Ryde, NSW 1670 (Australia); and others

    2013-11-01T23:59:59.000Z

    We present the stellar atmospheric parameters (effective temperature, surface gravity, overall metallicity), radial velocities, individual abundances, and distances determined for 425,561 stars, which constitute the fourth public data release of the RAdial Velocity Experiment (RAVE). The stellar atmospheric parameters are computed using a new pipeline, based on the algorithms of MATISSE and DEGAS. The spectral degeneracies and the Two Micron All Sky Survey photometric information are now better taken into consideration, improving the parameter determination compared to the previous RAVE data releases. The individual abundances for six elements (magnesium, aluminum, silicon, titanium, iron, and nickel) are also given, based on a special-purpose pipeline that is also improved compared to that available for the RAVE DR3 and Chemical DR1 data releases. Together with photometric information and proper motions, these data can be retrieved from the RAVE collaboration Web site and the Vizier database.

  6. Astrometric determination of white dwarf radial velocities with Gaia?

    E-Print Network [OSTI]

    Jordan, Stefan

    2012-01-01T23:59:59.000Z

    Usually, the determination of radial velocities of stars relies on the shift of spectral lines by the Doppler effect. Russel & Atkinson (1931) and Oort (1932) already noted that due to the large proper motion and parallax of the white dwarf (WD) van Maanen 2, a determination of the perspective acceleration of the proper motion would provide a direct astrometric determination of the radial velocity which is independent of the gravitational redshift. If spectroscopic redshift measurements of Halpha and Hbeta NLTE cores exist, a purely astrometric determination would allow disentangling the gravitational redshift from the Doppler shift. The best instrument for measuring the tiny perspective acceleration is the Gaia satellite of the European Space Agency, aiming at absolute astrometric measurements of one billion stars down to 20th magnitude with unprecedented accuracy. At 15th magnitude, the predicted angular accuracy of Gaia is about 20 micro-arcseconds. In this article, we estimate whether it is possible t...

  7. Time, Distance, Velocity, Redshift: a personal guided tour

    E-Print Network [OSTI]

    T. Kiang

    2003-08-01T23:59:59.000Z

    An attempt to answer the question 'Can we observe galaxies that recede faster than light ?' led to a re-examination of the notions of time, distance, velocity and redshift as they occur in newtonian physics, special relativity, general relativity and cosmology. A number of misconceptions were uncovered. It was found that, once freed of special relativity preconceptions, the above question is easily and unequivocally answered

  8. Obtaining anisotropic velocity data for proper depth seismic imaging

    SciTech Connect (OSTI)

    Egerev, Sergey; Yushin, Victor; Ovchinnikov, Oleg; Dubinsky, Vladimir; Patterson, Doug [Andreyev Acoustics Institute, Moscow, 117036 (Russian Federation); Baker Hughes, Inc, 2001 Rankin Road, Houston, TX, 77073 (United States)

    2012-05-24T23:59:59.000Z

    The paper deals with the problem of obtaining anisotropic velocity data due to continuous acoustic impedance-based measurements while scanning in the axial direction along the walls of the borehole. Diagrams of full conductivity of the piezoceramic transducer were used to derive anisotropy parameters of the rock sample. The measurements are aimed to support accurate depth imaging of seismic data. Understanding these common anisotropy effects is important when interpreting data where it is present.

  9. Radial Velocity Studies of Close Binary Stars. XI

    E-Print Network [OSTI]

    Theodor Pribulla; Slavek M. Rucinski; Wenxian Lu; Stefan W. Mochnacki; George Conidis; R. M. Blake; Heide DeBond; J. R. Thomson; Wojtek Pych; Waldemar Ogloza; Michal Siwak

    2006-05-15T23:59:59.000Z

    Radial-velocity measurements and sine-curve fits to the orbital radial velocity variations are presented for ten close binary systems: DU Boo, ET Boo, TX Cnc, V1073 Cyg, HL Dra, AK Her, VW LMi, V566 Oph, TV UMi and AG Vir. By this contribution, the DDO program has reached the point of 100 published radial velocity orbits. The radial velocities have been determined using an improved fitting technique which uses rotational profiles to approximate individual peaks in broadening functions. Three systems, ET Boo, VW LMi and TV UMi, were found to be quadruple while AG Vir appears to be a spectroscopic triple. ET Boo, a member of a close visual binary with $P_{vis} = 113$ years, was previously known to be a multiple system, but we show that the second component is actually a close, non-eclipsing binary. The new observations enabled us to determine the spectroscopic orbits of the companion, non-eclipsing pairs in ET Boo and VW LMi. The particularly interesting case is VW LMi, where the period of the mutual revolution of the two spectroscopic binaries is only 355 days. While most of the studied eclipsing pairs are contact binaries, ET Boo is composed of two double-lined detached binaries and HL Dra is single-lined detached or semi-detached system. Five systems of this group were observed spectroscopically before: TX Cnc, V1073 Cyg, AK Her (as a single-lined binary), V566 Oph, AG Vir, but our new data are of much higher quality than the previous studies.

  10. The stellar wind velocity field of HD 77581

    E-Print Network [OSTI]

    Manousakis, A

    2015-01-01T23:59:59.000Z

    The early acceleration of stellar winds in massive stars is poorly constrained. The scattering of hard X-ray photons emitted by the pulsar in the high-mass X-ray binary Vela X-1 can be used to probe the stellar wind velocity and density profile close to the surface of its supergiant companion HD 77581. We built a high signal-to-noise and high resolution hard X-ray lightcurve of Vela X-1 measured by Swift/BAT over 300 orbital periods of the system and compared it with the predictions of a grid of hydrodynamic simulations. We obtain a very good agreement between observations and simulations for a narrow set of parameters, implying that the wind velocity close to the stellar surface is twice larger than usually assumed with the standard beta law. Locally a velocity gradient of $\\beta\\sim0.5$ is favoured. Even if still incomplete, hydrodynamic simulations are successfully reproducing several observational properties of Vela X-1.

  11. RVSAO 2.0: Digital Redshifts and Radial Velocities

    E-Print Network [OSTI]

    Michael J. Kurtz; Douglas J. Mink

    1998-03-25T23:59:59.000Z

    RVSAO is a set of programs to obtain redshifts and radial velocities from digital spectra. RVSAO operates in the IRAF(Tody 1986, 1993) environment. The heart of the system is xcsao, which implements the cross-correlation method, and is a direct descendant of the system built by Tonry and Davis (1979). emsao uses intelligent heuristics to search for emission lines in spectra, then fits them to obtain a redshift. sumspec shifts and sums spectra to build templates for cross-correlation. linespec builds synthetic spectra given a list of spectral lines. bcvcorr corrects velocities for the motion of the earth. We discuss in detail the parameters necessary to run xcsao and emsao properly. We discuss the reliability and error associated with xcsao derived redshifts. We develop an internal error estimator, and we show how large, stable surveys can be used to develop more accurate error estimators. We develop a new methodology for building spectral templates for galaxy redshifts. We show how to obtain correlation velocities using emission line templates. Emission line correlations are substantially more efficient than the previous standard technique, automated emission line fitting. We compare the use of RVSAO with new methods, which use Singular Value Decomposition and $\\chi^2$ fitting techniques.

  12. VELOCITY AND MAGNETIC FIELD DISTRIBUTION IN A FORMING PENUMBRA

    SciTech Connect (OSTI)

    Romano, P.; Guglielmino, S. L. [INAF-Osservatorio Astrofisico di Catania, Via S. Sofia 78, I-95125 Catania (Italy); Frasca, D.; Zuccarello, F. [Dipartimento di Fisica e Astronomia-Sezione Astrofisica, Universita di Catania, Via S. Sofia 78, I-95125 Catania (Italy); Ermolli, I. [INAF-Osservatorio Astronomico di Roma, Via Frascati 33, I-00040 Monte Porzio Catone (Italy); Tritschler, A.; Reardon, K. P., E-mail: prom@oact.inaf.it [National Solar Observatory/Sacramento Peak, P.O. Box 62, Sunspot, NM 88349-0062 (United States)

    2013-07-01T23:59:59.000Z

    We present results from the analysis of high-resolution spectropolarimetric and spectroscopic observations of the solar photosphere and chromosphere, obtained shortly before the formation of a penumbra in one of the leading polarity sunspots of NOAA active region 11490. The observations were performed at the Dunn Solar Telescope of the National Solar Observatory on 2012 May 28, using the Interferometric Bidimensional Spectrometer. The data set is comprised of a 1 hr time sequence of measurements in the Fe I 617.3 nm and Fe I 630.25 nm lines (full Stokes polarimetry) and in the Ca II 854.2 nm line (Stokes I only). We perform an inversion of the Fe I 630.25 nm Stokes profiles to derive magnetic field parameters and the line-of-sight (LOS) velocity at the photospheric level. We characterize chromospheric LOS velocities by the Doppler shift of the centroid of the Ca II 854.2 nm line. We find that, before the formation of the penumbra, an annular zone of 3''-5'' width is visible around the sunspot. In the photosphere, we find that this zone is characterized by an uncombed structure of the magnetic field although no visible penumbra has formed yet. We also find that the chromospheric LOS velocity field shows several elongated structures characterized by downflow and upflow motions in the inner and outer parts of the annular zone, respectively.

  13. Terminal velocities of luminous, early-type SMC stars

    E-Print Network [OSTI]

    C. J. Evans; D. J. Lennon; C. Trundle; S. R. Heap; D. J. Lindler

    2004-03-12T23:59:59.000Z

    Ultraviolet spectra from the Space Telescope Imaging Spectrograph (STIS) are used to determine terminal velocities for 11 O and B-type giants and supergiants in the Small Magellanic Cloud (SMC) from the Si IV and C IV resonance lines. Using archival data from observations with the Goddard High-Resolution Spectrograph and the International Ultraviolet Explorer telescope, terminal velocities are obtained for a further five B-type supergiants. We discuss the metallicity dependence of stellar terminal velocities, finding no evidence for a significant scaling between Galactic and SMC metallicities for Teff < 30,000 K, consistent with the predictions of radiation driven wind theory for supergiant stars. A comparison of the $v_\\infty / v_{esc}$ ratio between the SMC and Galactic samples, while consistent with the above statement, emphasizes that the uncertainties in the distances to galactic O-stars are a serious obstacle to a detailed comparison with theory. For the SMC sample there is considerable scatter in this ratio at a given effective temperature, perhaps indicative of uncertainties in stellar masses.

  14. Student Leadership Institute (SLI) Participant Statistics from Fall 2008 to Fall 2011 Leadership and Multicultural Development Programs, Dean of Students Office

    E-Print Network [OSTI]

    de Lijser, Peter

    Student Leadership Institute (SLI) Participant Statistics from Fall 2008 to Fall 2011 Leadership.45% N/A Other 0 % N/A N/A 6.28% N/A Number of Students Participating in the Student Leadership Institute students actively participated in one or more core workshops. #12;Student Leadership Institute Certificates

  15. 2004 Fall GTAC Review:2004 Fall GTAC Review: A Monolithic, SelfA Monolithic, Self--Powered SystemPowered System--

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    2004 Fall GTAC Review:2004 Fall GTAC Review: A Monolithic, SelfA Monolithic, Self--Powered System Battery integration in a single chip Goal l Implementation of a monolithic, self-powered SOC, where Involving curve fitting of a bundle of measurement GEDC Industry Advisory Board, October 2004. © 2004

  16. Assimilation of Simulated Polarimetric Radar Data for a Convective Storm Using the Ensemble Kalman Filter. Part I: Observation Operators for Reflectivity and

    E-Print Network [OSTI]

    Xue, Ming

    the Weather Sur- veillance Radar-1988 Doppler (WSR-88D), the radial velocity and equivalent radar reflectivity and reflectivity link the model velocity compo- nents to the observed radial velocity and the model hydrometeor melting model that defines the water fraction in the melting snow or hail. The effect of varying density

  17. Low Velocity Sphere Impact of a Borosilicate Glass

    SciTech Connect (OSTI)

    Morrissey, Timothy G [ORNL; Ferber, Mattison K [ORNL; Wereszczak, Andrew A [ORNL; Fox, Ethan E [ORNL

    2012-05-01T23:59:59.000Z

    This report summarizes US Army TARDEC sponsored work at Oak Ridge National Laboratory (ORNL) involving low velocity (< 30 m/s or < 65 mph) ball impact testing of Borofloat borosilicate glass, and is a follow-up to a similar study completed by the authors on Starphire soda-lime silicate glass last year. The response of the borosilicate glass to impact testing at different angles was also studied. The Borofloat glass was supplied by the US Army Research Laboratory and its tin-side was impacted or indented. The intent was to better understand low velocity impact response in the Borofloat. Seven sphere materials were used whose densities bracket that of rock: borosilicate glass, soda-lime silicate glass, silicon nitride, aluminum oxide, zirconium oxide, carbon steel, and a chrome steel. A gas gun or a ball-drop test setup was used to produce controlled velocity delivery of the spheres against the glass tile targets. Minimum impact velocities to initiate fracture in the Borofloat were measured and interpreted in context to the kinetic energy of impact and the elastic property mismatch between the seven sphere-Borofloat-target combinations. The primary observations from this low velocity (< 30 m/s or < 65 mph) testing were: (1) BS glass responded similarly to soda-lime silicate glass when spherically indented but quite differently under sphere impact conditions; (2) Frictional effects contributed to fracture initiation in BS glass when it spherically indented. This effect was also observed with soda-lime silicate glass; (3) The force necessary to initiate fracture in BS glass under spherical impact decreases with increasing elastic modulus of the sphere material. This trend is opposite to what was observed with soda-lime silicate glass. Friction cannot explain this trend and the authors do not have a legitimate explanation for it yet; (4) The force necessary to initiate contact-induced fracture is higher under dynamic conditions than under quasi-static conditions. That difference decreases with increasing elastic modulus mismatch between the sphere material and borosilicate This trend was opposite in soda-lime silicate glass; (5) Fracture in borosilicate glass occurs at lower velocities (i.e., easier) at 24{sup o} than at 0{sup o} (orthogonal) and 46{sup o} of impact for the same probability of failure. Though not analyzed yet, this suggests that a convolution of kinetic energy and friction is contributing to that trend; (6) There is a subtle indication there was intra-tile differences in spherical indentation RCIF. This likely is not a material property nor exclusive to borosilicate glass, rather, it is a statistical response of a combination of local, surface-located flaw and imposed tensile stress. Understanding of the surface flaw population and flaw positioning can likely enable prediction of spherical indentation RCIF; and (7) Contact-induced fracture did not initiate in the Borofloat BS for impact kinetic energies up to {approx} 20 mJ. For kinetic energies between {approx} 20-150 mJ, fracture sometimes initiated. Contact-induced fracture would always occur for impact energies > 150 mJ. The energy values, and their boundaries, were much lower for BS glass than they were for soda-lime silicate glass.

  18. Geography 547: Fluvial Geomorphology Lecture Schedule, Fall, 2009

    E-Print Network [OSTI]

    James, L. Allan

    and Complexity, Stanley Schumm, 2005, Cambridge Univ. Press; 220pp. Supplement: Excerpts from Watersheds & Water (cont.): Climate & Hydrology ­ Hydraulic geometry; sediment yields Schumm Ch.7; WR: Anal. Sidebar 6-6 10 Mechanics [10] 20 Velocity, roughness, stream power; Manning & Chezy Eqs. WR: 6-3 22 Flow energy: Hydraulic

  19. Cloud-Scale Vertical Velocity and Turbulent Dissipation Rate Retrievals

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Shupe, Matthew

    Time-height fields of retrieved in-cloud vertical wind velocity and turbulent dissipation rate, both retrieved primarily from vertically-pointing, Ka-band cloud radar measurements. Files are available for manually-selected, stratiform, mixed-phase cloud cases observed at the North Slope of Alaska (NSA) site during periods covering the Mixed-Phase Arctic Cloud Experiment (MPACE, late September through early November 2004) and the Indirect and Semi-Direct Aerosol Campaign (ISDAC, April-early May 2008). These time periods will be expanded in a future submission.

  20. Method and apparatus for measuring flow velocity using matched filters

    DOE Patents [OSTI]

    Raptis, Apostolos C. (Downers Grove, IL)

    1983-01-01T23:59:59.000Z

    An apparatus and method for measuring the flow velocities of individual phase flow components of a multiphase flow utilizes matched filters. Signals arising from flow noise disturbance are extracted from the flow, at upstream and downstream locations. The signals are processed through pairs of matched filters which are matched to the flow disturbance frequency characteristics of the phase flow component to be measured. The processed signals are then cross-correlated to determine the transit delay time of the phase flow component between sensing positions.

  1. Method and apparatus for measuring flow velocity using matched filters

    DOE Patents [OSTI]

    Raptis, A.C.

    1983-09-06T23:59:59.000Z

    An apparatus and method for measuring the flow velocities of individual phase flow components of a multiphase flow utilizes matched filters. Signals arising from flow noise disturbance are extracted from the flow, at upstream and downstream locations. The signals are processed through pairs of matched filters which are matched to the flow disturbance frequency characteristics of the phase flow component to be measured. The processed signals are then cross-correlated to determine the transit delay time of the phase flow component between sensing positions. 8 figs.

  2. Velocity bunching in travelling wave accelerator with low acceleration gradient

    E-Print Network [OSTI]

    Huang, Rui-Xuan; Li, Wei-Wei; Jia, Qi-Ka

    2013-01-01T23:59:59.000Z

    We present the analytical and simulated results concerning the influences of the acceleration gradient in the velocity bunching process, which is a bunch compression scheme that uses a traveling wave accelerating structure as a compressor. Our study shows that the bunch compression application with low acceleration gradient is more tolerant to phase jitter and more successful to obtain compressed electron beam with symmetrical longitudinal distribution and low energy spread. We also present a transverse emittance compensation scheme to compensate the emittance growth caused by the increasing of the space charge force in the compressing process that is easy to be adjusted for different compressing factors.

  3. Accounting for velocity jitter in planet search surveys

    E-Print Network [OSTI]

    Roman V. Baluev

    2008-11-08T23:59:59.000Z

    The role of radial velocity (RV) jitter in extrasolar planet search surveys is discussed. Based on the maximum likelihood principle, improved statistical algorithms for RV fitting and period search are developed. These algorithms incorporate a built-in jitter determination, so that resulting estimations of planetary parameters account for this jitter automatically. This approach is applied to RV data for several extrasolar planetary systems. It is shown that many RV planet search surveys suffer from periodic systematic errors which increase effective RV jitter and can lead to erroneous conclusions. For instance, the planet candidate HD74156 d may be a false detection made due to annual systematic errors.

  4. A method of measuring velocity of sound in soil samples

    E-Print Network [OSTI]

    Matzen, Walter T

    1950-01-01T23:59:59.000Z

    , 0% feet per second. In the brass bar: (Figure 11) g ? $. 71 feet h = 2?300 cycles v = 10, 8% feet per second . 20 ?l6 0 ' ISO Q I8o q ISO 0 ISO 0 ISO PHASE SHIFT L8 DEGREE Figure 10. Helation of, Frequejncy to Phase Shift iri steel . 'Tuhe.... '28 26 20 18 16 0 leO P IBo 0 . ' l80: 0, ' ']80, 0 iS'o pigure' ll. Relation of Frequee'cg, to Pha'ss Shift; iri Brass 'Bar. 1 Again, the velocity in brass, given by Carlin as 14. , 500 feet per second, is a reasonable check. In the aluminum...

  5. The oceanic and cratonic upper mantle: Clues from joint interpretation of global velocity and attenuation models

    E-Print Network [OSTI]

    Asthenosphere Seismic attenuation Seismic velocity Anelasticity Partial melt Combined interpretation of seismicThe oceanic and cratonic upper mantle: Clues from joint interpretation of global velocity anelastic dispersion (Karato and Jung, 1998; Karato, 2003). A unique interpretation of seismological models

  6. Brady Geothermal 1D seismic velocity model - Datasets - OpenEI...

    Open Energy Info (EERE)

    1025. Number is 262. Title is "Brady 1D seismic velocity http:geothermaldata.orgdatasetbrady-1d-seismic-velocity-model-ambient-noise-prelim-prelim-brady-median-vpvsqs-model...

  7. Evidence for a critical velocity in a Bose-Einstein condensed gas

    E-Print Network [OSTI]

    C. Raman; M. Kohl; R. Onofrio; D. S. Durfee; C. E. Kuklewicz; Z. Hadzibabic; W. Ketterle

    1999-09-07T23:59:59.000Z

    We have studied dissipation in a Bose--Einstein condensed gas by moving a blue detuned laser beam through the condensate at different velocities. Strong heating was observed only above a critical velocity.

  8. Science and engineering research semester internship, Fall 1996, abstracts and research papers

    SciTech Connect (OSTI)

    Williams, B.; Brown, E.; Davis, M.; Downs, J.; Fox, K.; Hayden, C.; Jacobsen, E.; Kraut, E.; Lawrence, S.; Legler, T.; Oram, S.; Ragland, S.

    1996-12-01T23:59:59.000Z

    This document consists of abstracts and research papers from the science and engineering research semester internship fall 1996 at Lawrence Livermore National Laboratory.

  9. Analysis on Falls Death Crude Rate in Western Region of United States

    E-Print Network [OSTI]

    Ng, Lung Fai

    2012-01-01T23:59:59.000Z

    Falls Death Crude Rate in Western Region of United States AFalls Death Crude Rate in Western Region of United States by

  10. Sustainability E-Newsletter Fall/Winter 2013-2014 Like "Office of

    E-Print Network [OSTI]

    Alpay, S. Pamir

    Sustainability E-Newsletter Fall/Winter 2013-2014 Like "Office of Environmental Policy" on FacebookDay..........................................................................................2 Campus Sustainability Day our Sustainability Coordinators......................................................6 Campus

  11. Course Syllabus for MA 16100, Fall 2014 Course Objectives: 1. To ...

    E-Print Network [OSTI]

    2014-09-17T23:59:59.000Z

    Course Syllabus for MA 16100, Fall 2014. Course Objectives: 1. To compute limits and to apply limit laws. 2. To apply rules of differentiation to compute ...

  12. ECE 350 / 450 -Fall 2010 Applied Quantum Mechanics for Engineers (3)

    E-Print Network [OSTI]

    Gilchrist, James F.

    ECE 350 / 450 - Fall 2010 Applied Quantum Mechanics for Engineers (3) Instructor: Prof. Nelson (for ECE 450-level) in engineering (Electical and Computer Engineering, Material Science Engineering

  13. The Falling Price of Utility-Scale Solar Photovoltaic (PV) Projects...

    Office of Environmental Management (EM)

    Solar Photovoltaic (PV) Projects The Falling Price of Utility-Scale Solar Photovoltaic (PV) Projects Data courtesy of National Renewable Energy Lab. Chart by Daniel Wood. View...

  14. Math 421/521 Methods of Mathematical Analysis I Fall 2014 Instructor Amites Sarkar

    E-Print Network [OSTI]

    Sarkar, Amites

    Math 421/521 Methods of Mathematical Analysis I Fall 2014 Instructor Amites Sarkar Text and my e-mail is amites.sarkar@wwu.edu #12;

  15. Type B Investigation Board Report Worker Fall from Shoring/Scaffolding...

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

    Scaffolding Structure at the Savannah River Site Tritium Extraction Facility - Construction Site April 2, 2002 SAVANNAH RIVER SITE OFFICE MAY 2002 Worker Fall from Shoring...

  16. Effects of Hyporheic Exchange Flows on Egg Pocket Water Temperature in Snake River Fall Chinook Salmon Spawning Areas, 2002-2003 Final Report.

    SciTech Connect (OSTI)

    Hanrahan, T.; Geist, D.; Arntzen, C. (Pacific Northwest National Laboratory)

    2004-09-01T23:59:59.000Z

    The development of the Snake River hydroelectric system has affected fall Chinook salmon smolts by shifting their migration timing to a period (mid- to late-summer) when downstream reservoir conditions are unfavorable for survival. Subsequent to the Snake River Chinook salmon fall-run Evolutionary Significant Unit being listed as Threatened under the Endangered Species Act, recovery planning has included changes in hydrosystem operations (e.g., summer flow augmentation) to improve water temperature and flow conditions during the juvenile Chinook salmon summer migration period. In light of the limited water supplies from the Dworshak reservoir for summer flow augmentation, and the associated uncertainties regarding benefits to migrating fall Chinook salmon smolts, additional approaches for improved smolt survival need to be evaluated. This report describes research conducted by the Pacific Northwest National Laboratory (PNNL) that evaluated relationships among river discharge, hyporheic zone characteristics, and egg pocket water temperature in Snake River fall Chinook salmon spawning areas. This was a pilot-scale study to evaluate these relationships under existing operations of Hells Canyon Dam (i.e., without any prescribed manipulations of river discharge) during the 2002-2003 water year. The project was initiated in the context of examining the potential for improving juvenile Snake River fall Chinook salmon survival by modifying the discharge operations of Hells Canyon Dam. The potential for improved survival would be gained by increasing the rate at which early life history events proceed (i.e., incubation and emergence), thereby allowing smolts to migrate through downstream reservoirs during early- to mid-summer when river conditions are more favorable for survival. PNNL implemented this research project at index sites throughout 160 km of the Hells Canyon Reach (HCR) of the Snake River. The HCR extends from Hells Canyon Dam (river kilometer [rkm] 399) downstream to the upper end of Lower Granite Reservoir near rkm 240. We randomly selected 14 fall Chinook salmon spawning locations as study sites, which represents 25% of the most used spawning areas throughout the HCR. Interactions between river water and pore water within the riverbed (i.e., hyporheic zone) at each site were quantified through the use of self-contained temperature and water level data loggers suspended inside of piezometers. Surrounding the piezometer cluster at each site were 3 artificial egg pockets. In mid-November 2002, early-eyed stage fall Chinook salmon eggs were placed inside of perforated polyvinyl chloride (PVC) tubes, along with a temperature data logger, and buried within the egg pockets. Fall Chinook salmon eggs were also incubated in the laboratory for the purpose of developing growth curves that could be used as indicators of emergence timing. The effects of discharge on vertical hydrologic exchange between the river and riverbed were inferred from measured temperature gradients between the river and riverbed, and the application of a numerical model. The hydrologic regime during the 2002-2003 sampling period exhibited one of the lowest, most stable daily discharge patterns of any of the previous 12 water years. The vertical hydraulic gradients (VHG) between the river and the riverbed suggested the potential for predominantly small magnitude vertical exchange. The VHG also showed little relationship to changes in river discharge at most sites. Despite the relatively small vertical hydraulic gradients at most sites, results from the numerical modeling of riverbed pore water velocity and hyporheic zone temperatures suggested that there was significant vertical hydrologic exchange during all time periods. The combined results of temperature monitoring and numerical modeling indicate that only 2 of 14 sites were significantly affected by short-term (hourly to daily) large magnitude changes in discharge. Although the two sites exhibited acute flux reversals between river water and hyporheic water resulting from short-term large magnitude

  17. Save with Solar, Fall 1999, Vol.2, No.2

    SciTech Connect (OSTI)

    NREL

    1999-09-08T23:59:59.000Z

    This is the second issue of the second volume (Fall 1999) of a quarterly bulletin produced under the Department of Energy's Federal Energy Management Program (FEMP). It's intended for Federal solar energy champions, i.e., all those who are planning or working on projects in which solar and other renewable energy technologies are being installed in Federal government facilities. Contents include articles describing the implications of Executive Order 13123 for Federal renewable energy installations, and recent solar energy projects of the Departments of Defense and the Interior, the General Services Administration, and the U.S. Postal Service.

  18. Ludlow Falls, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:Landowners andLodgepole,Lotsee,EnergyAlabama:Ludlow Falls, Ohio: Energy

  19. Fall: Energy Saving Changes with the Season | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,OfficeEnd ofEvaluations in Covered FacilitiesAfter 12 to 26 Years of FieldFall:

  20. ARM - Field Campaign - Fall 1997 Water Vapor IOP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8LigovCampaignsCLEX-5govCampaignsFall 1997 Cloud IOP