Sample records for horizontal axis represents

  1. Determination of Elastic Twist in Horizontal Axis Wind Turbines (HAWTs)

    SciTech Connect (OSTI)

    Stoddard, F.; Nelson, V.; Starcher, K.; Andrews, B.

    2006-06-01T23:59:59.000Z

    This report presents the results of a project at the Alternative Energy Institute (AEI) which measured and calculated the elastic twist of three representative composite horizontal-axis blades: Carter 300, Gougeon ESI 54, and UTRC 8 kW.

  2. Sandia National Laboratories: horizontal-axis wind turbine

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

    horizontal-axis wind turbine Study Compares Floating-Platform Options for Offshore Vertical-Axis Wind Turbines On December 3, 2014, in Energy, News, News & Events, Partnership,...

  3. Yaw dynamics of horizontal axis wind turbines

    SciTech Connect (OSTI)

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

    1992-05-01T23:59:59.000Z

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

  4. A Simplified Morphing Blade for Horizontal Axis Wind Turbines

    E-Print Network [OSTI]

    Boyer, Edmond

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

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

    E-Print Network [OSTI]

    Quartly, Graham

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

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

    E-Print Network [OSTI]

    Gorban, Alexander N.

    Hydrodynamic and Structural Performance of the Transverse Horizontal Axis Water Turbine Prof. Guy across the flow THAWT Concept Transverse Horizontal Axis Water Turbine · Length limited only by stiffness;Options for tidal stream power (1) · Axial flow turbines ("underwater windmills") ­ "Unducted" » MCT (most

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

    E-Print Network [OSTI]

    Grujicic, Mica

    -Axis Wind-Turbine Blades M. Grujicic, G. Arakere, B. Pandurangan, V. Sellappan, A. Vallejo, and M. Ozen optimization, fatigue-life assessment, horizon- tal axis wind turbine blades 1. Introduction The depletion for the development of cost-effective glass-fiber reinforced epoxy-matrix composite 5 MW horizontal-axis wind-turbine

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

    E-Print Network [OSTI]

    Milburn, Robert Terrance

    1977-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Lucas, Jorge

    2011-11-22T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Milburn, Robert Terrance

    1977-01-01T23:59:59.000Z

    . Design details of the wind turbine are discussed by the sections shown in the figure . Main Su ort Assembl The 3/4 in. diameter rotor shaft is supported at each end by roller bearings. Each bearing is clamped between two aluminum blocks. A flange...THE EXPERIMENTAL AND THEORETICAL INVESTIGATION OF A HORIZONTAL-AXIS WIND TURBINE A Thesis by ROBERT TERRANCE MILBURN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER...

  11. Structural effects of unsteady aerodynamic forces on horizontal-axis wind turbines

    SciTech Connect (OSTI)

    Miller, M.S.; Shipley, D.E. [Univ. of Colorado, Boulder, CO (United States). BioServe Space Technologies

    1994-08-01T23:59:59.000Z

    Due to its renewable nature and abundant resources, wind energy has the potential to fulfill a large portion of this nation`s energy needs. The simplest means of utilizing wind energy is through the use of downwind, horizontal-axis wind turbines (HAWT) with fixed-pitch rotors. This configuration regulates the peak power by allowing the rotor blade to aerodynamically stall. The stall point, the point of maximum coefficient of lift, is currently predicted using data obtained from wind tunnel tests. Unfortunately, these tests do not accurately simulate conditions encountered in the field. Flow around the tower and nacelle coupled with inflow turbulence and rotation of the turbine blades create unpredicted aerodynamic forces. Dynamic stall is hypothesized to occur. Such aerodynamic loads are transmitted into the rotor and tower causing structural resonance that drastically reduces the design lifetime of the wind turbine. The current method of alleviating this problem is to structurally reinforce the tower and blades. However, this adds unneeded mass and, therefore, cost to the turbines. A better understanding of the aerodynamic forces and the manner in which they affect the structure would allow for the design of more cost effective and durable wind turbines. Data compiled by the National Renewable Energy Laboratory (NREL) for a downwind HAWT with constant chord, untwisted, fixed-pitch rotors is analyzed. From these data, the actual aerodynamic characteristics of the rotor are being portrayed and the potential effects upon the structure can for the first time be fully analyzed. Based upon their understanding, solutions to the problem of structural resonance are emerging.

  12. Development of a Rig and Testing Procedures for the Experimental Investigation of Horizontal Axis Kinetic Turbines

    E-Print Network [OSTI]

    Victoria, University of

    Kinetic Turbines by Catalina Lartiga B.Sc., Catholic University of Chile, 2001 A Thesis Submitted Turbines by Catalina Lartiga B.Sc., Catholic University of Chile, 2001 Supervisory Committee Dr. Curran system to characterize the non-dimensional performance coefficients of hor- izontal axis kinetic turbines

  13. Development and Verification of a Computational Fluid Dynamics Model of a Horizontal-Axis Tidal Current Turbine

    SciTech Connect (OSTI)

    Lawson, M. J.; Li, Y.; Sale, D. C.

    2011-10-01T23:59:59.000Z

    This paper describes the development of a computational fluid dynamics (CFD) methodology to simulate the hydrodynamics of horizontal-axis tidal current turbines. Qualitative measures of the CFD solutions were independent of the grid resolution. Conversely, quantitative comparisons of the results indicated that the use of coarse computational grids results in an under prediction of the hydrodynamic forces on the turbine blade in comparison to the forces predicted using more resolved grids. For the turbine operating conditions considered in this study, the effect of the computational timestep on the CFD solution was found to be minimal, and the results from steady and transient simulations were in good agreement. Additionally, the CFD results were compared to corresponding blade element momentum method calculations and reasonable agreement was shown. Nevertheless, we expect that for other turbine operating conditions, where the flow over the blade is separated, transient simulations will be required.

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

    SciTech Connect (OSTI)

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

    2011-10-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Dabiri, John O.

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

  16. Analysis and test results for a two-bladed, passive cycle pitch, horizontal-axis wind turbine in free and controlled yaw

    SciTech Connect (OSTI)

    Holenemser, K.H. [Washington Univ., St. Louis, MO (United States)

    1995-10-01T23:59:59.000Z

    This report surveys the analysis and tests performed at Washington University in St. Louis, Missouri, on a horizontal-axis, two-laded wind turbine with teeter hub. The introduction is a brief account of results obtained during the 5-year period ending December 1985. The wind tunnel model and the test turbine (7.6 m [25 ft.] in diameter) at Washington University`s Tyson Research Center had a 67{degree} delta-three angle of the teeter axis. The introduction explains why this configuration was selected and named the passive cycle pitch (PCP) wind turbine. Through the analysis was not limited to the PCP rotor, all tests, including those done from 1986 to 1994, wee conducted with the same teetered wind rotor. The blades are rather stiff and have only a small elastic coning angle and no precone.

  17. Tripleclouds: An Efficient Method for Representing Horizontal Cloud Inhomogeneity in 1D Radiation Schemes by Using Three Regions at Each Height

    E-Print Network [OSTI]

    Hogan, Robin

    that a mere 4% increase in global cloud cover could counter- act the warming caused by a doubling of carbon the effect of in- homogeneity on the radiative properties of high cloud. They used cloud radar data to inferTripleclouds: An Efficient Method for Representing Horizontal Cloud Inhomogeneity in 1D Radiation

  18. A comparison of spanwise aerodynamic loads estimated from measured bending moments versus direct pressure measurements on horizontal axis wind turbine blades

    SciTech Connect (OSTI)

    Simms, D A; Butterfield, C P

    1991-10-01T23:59:59.000Z

    Two methods can be used to determine aerodynamic loads on a rotating wind turbine blade. The first is to make direct pressure measurements on the blade surface. This is a difficult process requiring costly pressure instrumentation. The second method uses measured flap bending moments in conjunction with analytical techniques to estimate airloads. This method, called ALEST, was originally developed for use on helicopter rotors and was modified for use on horizontal axis wind turbine blades. Estimating airloads using flap bending moments in much simpler and less costly because measurements can be made with conventional strain gages and equipment. This paper presents results of airload estimates obtained using both methods under a variety of operating conditions. Insights on the limitations and usefulness of the ALEST bending moment technique are also included. 10 refs., 6 figs.

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

    SciTech Connect (OSTI)

    Maniaci, D. C.; Li, Y.

    2011-10-01T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

    Maniaci, D. C.; Li, Y.

    2012-04-01T23:59:59.000Z

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

  1. Generation of large-scale winds in horizontally anisotropic convection

    E-Print Network [OSTI]

    von Hardenberg, J; Provenzale, A; Spiegel, E A

    2015-01-01T23:59:59.000Z

    We simulate three-dimensional, horizontally periodic Rayleigh-B\\'enard convection between free-slip horizontal plates, rotating about a horizontal axis. When both the temperature difference between the plates and the rotation rate are sufficiently large, a strong horizontal wind is generated that is perpendicular to both the rotation vector and the gravity vector. The wind is turbulent, large-scale, and vertically sheared. Horizontal anisotropy, engendered here by rotation, appears necessary for such wind generation. Most of the kinetic energy of the flow resides in the wind, and the vertical turbulent heat flux is much lower on average than when there is no wind.

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

    SciTech Connect (OSTI)

    Berg, D.E.

    1996-12-31T23:59:59.000Z

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

  3. Magnetic Flux Dynamics in Horizontally Cooled Superconducting Cavities

    E-Print Network [OSTI]

    Martinello, M; Grassellino, A; Crawford, A C; Melnychuk, O; Romanenko, A; Sergatkov, D A

    2015-01-01T23:59:59.000Z

    Previous studies on magnetic flux expulsion as a function of cooling details have been performed for superconducting niobium cavities with the cavity beam axis placed parallel respect to the helium cooling flow, and findings showed that for sufficient cooling thermogradients all magnetic flux could be expelled and very low residual resistance could be achieved. In this paper we investigate the flux trapping and its impact on radio frequency surface resistance when the resonators are positioned perpendicularly to the helium cooling flow, which is representative of how superconducting radio-frequency (SRF) cavities are cooled in an accelerator. We also extend the studies to different directions of applied magnetic field surrounding the resonator. Results show that in the cavity horizontal configuration there is a different impact of the various field components on the final surface resistance, and that several parameters have to be considered to understand flux dynamics. A newly discovered phenomenon of concent...

  4. MHK Technologies/Horizontal Axis Logarithmic Spiral Turbine | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose Bend < MHK ProjectsFlagship < MHKInformation Logarithmic

  5. Polar axis solar collector

    SciTech Connect (OSTI)

    Ludlow, G.T.

    1994-01-04T23:59:59.000Z

    A polar column solar collector is described for use in association with a building, the system having a concave mirror located on the exterior of the building and defining a focal point and a central axis, a mounting column secured to the mirror coaxial therewith, a polar axis column, a hinge swingably connecting the mounting column to the polar axis column for moving the concave mirror to aim it directly at the sun at least over a predetermined period of the daylight hours, a secondary reflector located at the focal point of the concave mirror to receive the sun's rays reflected from the concave mirror, an opening in the concave mirror to receive a concentrated beam of the sun's rays reflected from the secondary reflector and to direct the beam along the mounting column, a third reflector movably located at the junction of the mounting column and the polar axis column to receive the concentrated beam of the sun's rays from the secondary reflector reflected through the opening, and to redirect it along the polar axis column, and a polar column rotator for rotating at least a portion of the polar column to track the movement of the sun. 7 figs.

  6. Horizontal Advanced Tensiometer

    DOE Patents [OSTI]

    Hubbell, Joel M.; Sisson, James B.

    2004-06-22T23:59:59.000Z

    An horizontal advanced tensiometer is described that allows the monitoring of the water pressure of soil positions, particularly beneath objects or materials that inhibit the use of previous monitoring wells. The tensiometer includes a porous cup, a pressure transducer (with an attached gasket device), an adaptive chamber, at least one outer guide tube which allows access to the desired horizontal position, a transducer wire, a data logger and preferably an inner guide tube and a specialized joint which provides pressure on the inner guide tube to maintain the seal between the gasket of the transducer and the adaptive chamber.

  7. Vertical axis wind turbines

    DOE Patents [OSTI]

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

    2011-03-08T23:59:59.000Z

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

  8. Horizontal Plate Plate

    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 School football Highdefault Sign InData inmaxHorizontal Plate Plate

  9. Food habits of axis deer (Axis axis) on the Coastal Plain, Calhoun County, Texas

    E-Print Network [OSTI]

    Smith, John Clarence

    1971-01-01T23:59:59.000Z

    Fluctuations in annual rainfall occur on the study area. Data for 1958 to 1970 were from U. S. Weather Bureau records for Port O' Connor, Texas. 30 Climograph comparing monthly temperature and precipitation at New Delhi, India and Port O' Connor, Texas... bite technique was used to aid in determining the food preference of axis deer. During 156 hours a tame axis doe took 324, 000 bites. Thirty-eight axis deer and 11 white-tailed deer were collected for rumen analysis during the study. Acorns were...

  10. Vertical axis wind turbine airfoil

    DOE Patents [OSTI]

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

    2012-12-18T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Manavi, Kasra Mehron

    2012-07-16T23:59:59.000Z

    is the Probabilistic Roadman Method (PRM), which generates a graph of the free space of an environment referred to as a roadmap. In this work we describe a new approach to making high clearance paths when using PRM The medial axis is useful for this since...

  12. Two-axis angular effector

    DOE Patents [OSTI]

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

    1997-01-21T23:59:59.000Z

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

  13. Horizontal wind rotor. Final technical report

    SciTech Connect (OSTI)

    Guard, E.J.

    1983-06-30T23:59:59.000Z

    A vertical axis wind machine called, ''Horizontal Wind Rotor'' conceived in 1979 by the Grantee E.J. Guard was an effort to marry a new high tech carousel type wind rotor to a basic building design for the purpose of generating practical amounts of electricty. This was directed especially towards high performance power generation, relative to low average wind velocity fields, typically found in Florida. From January 1980 to April 1983 two 1/30 scale wind tunnel type test models of buildings, one round and one square were built. An eight Hartzell shrouded wind tunnel fan machine was designed and built to supply uniform wind velocities for testing. All components of the Horizontal Wind Rotor (HWR) were fabricated, instrumented, mounted on the building models, and tested and modified repeatedly for performance optimization. Aerodynamic consultants, model makers, mechanical and computer engineers and technicians under the direction of E. Guard all teamed up to evolve the size, shape, and placement of the system components. It was recognized early that the machine had to be large in order to extract energy from low wind velocities. It was also noted that there were so many variables in the system, so as to elude analytical computation, that only testing could provide the answers. Consequently, this grant program has provided major contributions to the sparse available data in this little studied field, and set up valuable bench marks in design and power output parameters. This data will be the foundation for incorporating the newly discovered design improvements into the full scale prototype to follow. (Phase II) It is believed that this Rotor design is the only one in the world today that will produce as much power in the lower wind velocity ranges and it is also believed that every objective of the original grant proposal has been met or exceeded.

  14. Representing Trees with Constraints 

    E-Print Network [OSTI]

    Curry, Benjamin; Wiggins, Geraint; Hayes, Gillian

    This paper presents a method for representing trees using constraint logic programming over finite domains. We describe a class of trees that is of particular interest to us and how we can represent the set of trees belonging to that class using...

  15. Nuclear component horizontal seismic restraint

    DOE Patents [OSTI]

    Snyder, Glenn J. (Lynchburg, VA)

    1988-01-01T23:59:59.000Z

    A nuclear component horizontal seismic restraint. Small gaps limit horizontal displacement of components during a seismic occurrence and therefore reduce dynamic loadings on the free lower end. The reactor vessel and reactor guard vessel use thicker section roll-forged rings welded between the vessel straight shell sections and the bottom hemispherical head sections. The inside of the reactor guard vessel ring forging contains local vertical dovetail slots and upper ledge pockets to mount and retain field fitted and installed blocks. As an option, the horizontal displacement of the reactor vessel core support cone can be limited by including shop fitted/installed local blocks in opposing alignment with the reactor vessel forged ring. Beams embedded in the wall of the reactor building protrude into apertures in the thermal insulation shell adjacent the reactor guard vessel ring and have motion limit blocks attached thereto to provide to a predetermined clearance between the blocks and reactor guard vessel ring.

  16. Quarterly Journal of the Royal Meteorological Society Q. J. R. Meteorol. Soc. 136: 11911204, July 2010 Part A Effect of improving representation of horizontal and vertical

    E-Print Network [OSTI]

    Hogan, Robin

    2010 Part A Effect of improving representation of horizontal and vertical cloud structure on the Earth a new way of representing both horizontal and vertical cloud structure in a radiation scheme representation of horizontal and vertical cloud structure on the Earth's global radiation budget. Part I: Review

  17. What do kets represent?

    E-Print Network [OSTI]

    Casey Blood

    2013-10-04T23:59:59.000Z

    It is usually assumed that a ket represents the state of an actually existing particle. But one can show there is no evidence for particles. The particle-like properties of mass, spin and charge, as well as particle-like trajectories, the photoelectric effect, and localized effects from spread-out wave functions can be explained using quantum mechanics alone. It is therefore proposed instead that kets represent particle-like solutions to a pre-representational linear partial differential equation which has Poincar\\'e and internal symmetries. This equation underlies the completely representational character, including mass, spin, charge, internal symmetries, and symmetric and antisymmetric statistics, of current quantum mechanics.

  18. Industry survey for horizontal wells. Final report

    SciTech Connect (OSTI)

    Wilson, D.D.; Kaback, D.S. [CDM Federal Programs Corp., Denver, CO (United States); Denhan, M.E. [Westinghouse Savannah River Co., Aiken, SC (United States); Watkins, D. [CDM Federal Programs Corp., Aiken, SC (United States)

    1993-07-01T23:59:59.000Z

    An international survey of horizontal environmental wells was performed during May and June of 1993. The purpose of the survey was to provide the environmental industry with an inventory of horizontal environmental wells and information pertaining to the extent of the use of horizontal environmental wells, the variety of horizontal environmental well applications, the types of geologic and hydrogeologic conditions within which horizontal environmental wells have been installed, and the companies that perform horizontal environmental well installations. Other information, such as the cost of horizontal environmental well installations and the results of tests performed on the wells, is not complete but is provided as general information with the caveat that the information should not be used to compare drilling companies. The result of the survey is a catalogue of horizontal environmental wells that are categorized by the objective or use of the wells, the vertical depth of the wells, and the drilling company contracted to install the wells.

  19. AXI LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind6:00-06:00 U.S.ratios inAS 42.05,AXI LLC Jump to:

  20. Site selection, drilling, and completion of two horizontal wells in the Devonian Shales of West Virginia

    SciTech Connect (OSTI)

    Overbey, W.K. Jr.; Carden, R.S.; Locke, C.D.; Salamy, S.P.; Reeves, T.K.; Johnson, H.R.

    1992-03-01T23:59:59.000Z

    This report presents a summary of the geologic site selection studies, planning, drilling, completing, stimulating, and testing of two horizontal wells drilled in the Devonian Shales of the Appalachian Basin in West Virginia. Each horizontal well was designed and managed by BDM as the prime contractor to the Department of Energy. The first well was drilled with industry partner Cabot Oil and Gas Corporation in Putnam County, West Virginia. The second well was drilled with Consolidated Natural Gas Company in Calhoun County, West Virginia. This report summarizes four reports prepared by BDM which detail the site selection rationale and the drilling and completion operations of each well. Each horizontal well is currently producing commercial quantities of hydrocarbons. The successful application of horizontal well technology represent continued development of the technology for application to tight and unconventional natural gas resources of the United States. Continued technology development is expected to ultimately result in commercial horizontal well drilling activity by industry in the Appalachian Basin.

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

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

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

  2. Helical axis stellarator with noninterlocking planar coils

    DOE Patents [OSTI]

    Reiman, Allan (Princeton, NJ); Boozer, Allen H. (Rocky Hill, NJ)

    1987-01-01T23:59:59.000Z

    A helical axis stellarator using only noninterlocking planar, non-circular coils, generates magnetic fields having a magnetic well and large rotational transform with resultant large equilibrium beta.

  3. Horizontal well applications in complex carbonate reservoirs

    SciTech Connect (OSTI)

    Rahman, M.; Al-Awami, H.

    1995-10-01T23:59:59.000Z

    Over the past four years, Saudi Aramco has drilled over eighty horizontal wells, onshore and offshore. It has successfully applied this technology to develop new reservoirs as well as enhance recovery from its mature fields. This paper presents the reservoir engineering aspects of `horizontal` and `high angle` wells drilled in a major offshore field in Saudi Arabia. It shows how horizontal wells have (a) increased the recovery of bypassed oil, (b) improved well productivity in tight reservoirs, (c) increased production from thin oil zones underlain by water, and (d) improved peripheral injection. The paper discusses the actual performance of the horizontal wells and compares them with offset conventional wells. It presents the results of logging and testing of these wells, and highlights actual field data on (a) relationship between productivity gain and horizontal length, (b) pressure loss along the horizontal wellbore, and (c) effect of heterogeneity on coning an inflow performance.

  4. Hydraulic fracturing slurry transport in horizontal pipes

    SciTech Connect (OSTI)

    Shah, S.N.; Lord, D.L. (Halliburton Services (US))

    1990-09-01T23:59:59.000Z

    Horizontal-well activity has increased throughout the industry in the past few years. To design a successful hydraulic fracturing treatment for horizontal wells, accurate information on the transport properties of slurry in horizontal pipe is required. Limited information exists that can be used to estimate critical deposition and resuspension velocities when proppants are transported in horizontal wells with non-Newtonian fracturing gels. This paper presents a study of transport properties of various hydraulic fracturing slurries in horizontal pipes. Flow data are gathered in three transparent horizontal pipes with different diameters. Linear and crosslinked fracturing gels were studied, and the effects of variables--e.g., pipe size; polymer-gelling-agent concentration; fluid rheological properties; crosslinking effects; proppant size, density, and concentrations; fluid density; and slurry pump rate--on critical deposition and resuspension velocities were investigated. Also, equations to estimate the critical deposition and resuspension velocities of fracturing gels are provided.

  5. NISTIR 6095 Horizontal Convective Condensation of

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    NISTIR 6095 Horizontal Convective Condensation of Alternative Refrigerants within a Micro-Fin Tube Horizontal Convective Condensation of Alternative Refrigerants Within a Micro-Fin Tube Mark A. Kedzierski J for flow boiling pressure drop in a smooth tube. Correlation of the pressure drop measurements suggested

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

    E-Print Network [OSTI]

    Leutwyler, Cooke Hearon

    1965-01-01T23:59:59.000Z

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

  7. Wave represents displacement Wave represents pressure Source -Sound Waves

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Wave represents displacement Wave represents pressure Source - Sound Waves Distance between crests is wavelength Number of crests passing a point in 1 second is frequency Wave represents pressure Target - Radio Waves Distance between crests is wavelength Number of crests passing a point in 1 second is frequency

  8. Automatic 5-axis NC toolpath generation

    E-Print Network [OSTI]

    Balasubramaniam, Mahadevan, 1976-

    2001-01-01T23:59:59.000Z

    Despite over a decade of research, automatic toolpath generation has remained an elusive goal for 5-axis NC machining. This thesis describes the theoretical and practical issues associated with generating collision free ...

  9. Jet shapes with the broadening axis

    E-Print Network [OSTI]

    Larkoski, Andrew James

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

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

    DOE Patents [OSTI]

    Price, Jeffery R.

    2006-05-02T23:59:59.000Z

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

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

    DOE Patents [OSTI]

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

    2009-12-08T23:59:59.000Z

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

  12. Particle Impact Damping in the Horizontal Plane

    E-Print Network [OSTI]

    Witt, Bryan

    2012-07-16T23:59:59.000Z

    Particle impact damping is measured for a cantilevered beam vibrating freely in the horizontal plane. Several particle configurations are investigated beginning with a single particle and progressing to multiple layers of particles. The effects...

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

    E-Print Network [OSTI]

    Whittlesey, Robert W; Dabiri, John O

    2010-01-01T23:59:59.000Z

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

  14. Natural Gas Horizontal Well Control Act (West Virginia)

    Broader source: Energy.gov [DOE]

    The Natural Gas Horizontal Well Control Act regulates the construction, alteration, enlargement, abandonment and removal of horizontal wells and associated water and wastewater use and storage. The...

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

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

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

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

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

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

  17. Site selection, drilling, and completion of two horizontal wells in the Devonian Shales of West Virginia. Final report

    SciTech Connect (OSTI)

    Overbey, W.K. Jr.; Carden, R.S.; Locke, C.D.; Salamy, S.P.; Reeves, T.K.; Johnson, H.R.

    1992-03-01T23:59:59.000Z

    This report presents a summary of the geologic site selection studies, planning, drilling, completing, stimulating, and testing of two horizontal wells drilled in the Devonian Shales of the Appalachian Basin in West Virginia. Each horizontal well was designed and managed by BDM as the prime contractor to the Department of Energy. The first well was drilled with industry partner Cabot Oil and Gas Corporation in Putnam County, West Virginia. The second well was drilled with Consolidated Natural Gas Company in Calhoun County, West Virginia. This report summarizes four reports prepared by BDM which detail the site selection rationale and the drilling and completion operations of each well. Each horizontal well is currently producing commercial quantities of hydrocarbons. The successful application of horizontal well technology represent continued development of the technology for application to tight and unconventional natural gas resources of the United States. Continued technology development is expected to ultimately result in commercial horizontal well drilling activity by industry in the Appalachian Basin.

  18. Enclosed, off-axis solar concentrator

    DOE Patents [OSTI]

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

    2013-11-26T23:59:59.000Z

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

  19. BACHELOR THESIS The High Representative

    E-Print Network [OSTI]

    Vellekoop, Michel

    BACHELOR THESIS The High Representative and the Libya Crisis An Assessment Dominique Prescher 8 and the Libya Crisis 2 Table of Content 1. Summary 4 2. Introduction 4 3. Theoretical Framework 8 3.1 Neo 34 9. Bibliography 36 #12;Bachelor Thesis The High Representative and the Libya Crisis 3 List

  20. A low order model for vertical axis wind turbines

    E-Print Network [OSTI]

    Drela, Mark

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

  1. Horizontal stirring in the global ocean

    E-Print Network [OSTI]

    Hernández-Carrasco, I; Hernández-García, E; Turiel, A

    2011-01-01T23:59:59.000Z

    Horizontal mixing and the distribution of coherent structures in the global ocean are analyzed using Finite-Size Lyapunov Exponents (FSLE), computed for the surface velocity field derived from the Ocean general circulation model For the Earth Simulator (OFES). FSLEs measure horizontal stirring and dispersion; additionally, the transport barriers which organize the oceanic flow can roughly be identified with the ridges of the FSLE field. We have performed a detailed statistical study, particularizing for the behaviour of the two hemispheres and different ocean basins. The computed Probability Distributions Functions (PDFs) of FSLE are broad and asymmetric. Horizontal mixing is generally more active in the northern hemisphere than in the southern one. Nevertheless the Southern Ocean is the most active ocean, and the Pacific the less active one. A striking result is that the main currents can be classified in two 'activity classes': Western Boundary Currents, which have broad PDFs with large FSLE values, and Eas...

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

    SciTech Connect (OSTI)

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

    2014-04-30T23:59:59.000Z

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

  3. Shock margin testing of a one-axis MEMS accelerometer.

    SciTech Connect (OSTI)

    Parson, Ted Blair; Tanner, Danelle Mary; Buchheit, Thomas Edward

    2008-07-01T23:59:59.000Z

    Shock testing was performed on a selected commercial-off-the-shelf - MicroElectroMechanical System (COTS-MEMS) accelerometer to determine the margin between the published absolute maximum rating for shock and the 'measured' level where failures are observed. The purpose of this testing is to provide baseline data for isolating failure mechanisms under shock and environmental loading in a representative device used or under consideration for use within systems and assemblies of the DOD/DOE weapons complex. The specific device chosen for this study was the AD22280 model of the ADXL78 MEMS Accelerometer manufactured by Analog Devices Inc. This study focuses only on the shock loading response of the device and provides the necessary data for adding influence of environmental exposure to the reliability of this class of devices. The published absolute maximum rating for acceleration in any axis was 4000 G for this device powered or unpowered. Results from this study showed first failures at 8000 G indicating a margin of error of two. Higher shock level testing indicated that an in-plane, but off-axis acceleration was more damaging than one in the sense direction.

  4. Horizontal drilling in shallow, geologically complex reservoirs

    SciTech Connect (OSTI)

    Venable, S.D. [Hillin-Simon Oil Co., Midland, TX (United States)

    1992-05-01T23:59:59.000Z

    Hillin-Simon Oil Company, in connection with the U.S. Department of Energy proposes to drill a horizontal well in the Niobrara formation, Yuma County, Colorado. The objective of this project is to test the concept that multiple hydraulic fracturing from a directionally-drilled horizontal well, using the medium radius build rate method, can increase gas production sufficiently to justify economic viability over conventional stimulated vertical wells. The test well is located in a favorable area of established production to avoid exploration risks.

  5. High payload six-axis load sensor

    DOE Patents [OSTI]

    Jansen, John F. (Knoxville, TN); Lind, Randall F. (Knoxville, TN)

    2003-01-01T23:59:59.000Z

    A repairable high-payload six-axis load sensor includes a table, a base, and at least three shear-pin load transducers removably mounted between the table and the base. Removable mounting permits easy replacement of damaged shear pins. Preferably, the shear-pin load transducers are responsive to shear forces imparted along the two axes perpendicular to an axis of minimum sensitivity characteristic of the transducer. Responsive to an applied shear force, each shear-pin load transducer can produce an electrical signal proportional to the reaction force. The load sensor can further include a structure for receiving the proportional electrical signals and computing the applied load corresponding to the proportional electrical signals. The computed load can be expressed in terms of a three-dimensional XYZ Cartesian coordinate system.

  6. Representing Periodic Functions by Fourier

    E-Print Network [OSTI]

    Vickers, James

    Representing Periodic Functions by Fourier Series 23.2 Introduction In this Section we show how, then the Fourier series expansion takes the form: f(t) = a0 2 + n=1 (an cos nt + bn sin nt) Our main purpose here Fourier coefficients of a function of period 2 calculate Fourier coefficients of a function of general

  7. Sandia National Laboratories: vertical-axis wind turbine research

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

    vertical-axis wind turbine research Sandia Vertical-Axis Wind-Turbine Research Presented at Science of Making Torque from Wind Conference On July 8, 2014, in Computational Modeling...

  8. Vertical axis wind turbine with continuous blade angle adjustment

    E-Print Network [OSTI]

    Weiss, Samuel Bruce

    2010-01-01T23:59:59.000Z

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

  9. Application of horizontal wells in steeply dipping reservoirs

    E-Print Network [OSTI]

    Lopez Navarro, Jose David

    1995-01-01T23:59:59.000Z

    horizontal wells can increase the oil recovery factor from almost 35% under primary production to 40%. A significant incremental oil recovery could be expected by employing horizontal wells for simultaneous gas and water injection. A comparison...

  10. Economic viability of multiple-lateral horizontal wells

    E-Print Network [OSTI]

    Smith, Christopher Jason

    1995-01-01T23:59:59.000Z

    Horizontal wells are gaining popularity throughout the petroleum industry as a means to increase well productivity and enhance incremental economics. Horizontal wells provide greater reservoir exposure and are useful in intersecting additional pay...

  11. Flow mapping for an ESS horizontal target

    SciTech Connect (OSTI)

    Takeda, Y.; Kikura, H.; Taishi, T. [Paul Scherrer Institute, Villigen (Switzerland)

    1997-12-01T23:59:59.000Z

    In the target of the European spallation neutron source (ESS), the beam line is horizontal and the mercury is fully forced by a pump in a parallel channel geometry. The top front of the assembly is a hemicylindrical wall, where the beam enters and is thus called a window. The main body is partitioned by a horizontal separation plate into the upper and the lower flow channels. The target liquid flows in the lower channel to the window region, turns there, and flows out in the upper channel. A thermal-hydraulic study is under way to investigate the general behavior of the flow in this configuration. The present experimental work is the first step of an effort to validate computer codes. The model used in this investigation is two-dimensional and uses water.

  12. Horizontal modular dry irradiated fuel storage system

    DOE Patents [OSTI]

    Fischer, Larry E. (Los Gatos, CA); McInnes, Ian D. (San Jose, CA); Massey, John V. (San Jose, CA)

    1988-01-01T23:59:59.000Z

    A horizontal, modular, dry, irradiated fuel storage system (10) includes a thin-walled canister (12) for containing irradiated fuel assemblies (20), which canister (12) can be positioned in a transfer cask (14) and transported in a horizontal manner from a fuel storage pool (18), to an intermediate-term storage facility. The storage system (10) includes a plurality of dry storage modules (26) which accept the canister (12) from the transfer cask (14) and provide for appropriate shielding about the canister (12). Each module (26) also provides for air cooling of the canister (12) to remove the decay heat of the irradiated fuel assemblies (20). The modules (26) can be interlocked so that each module (26) gains additional shielding from the next adjacent module (26). Hydraulic rams (30) are provided for inserting and removing the canisters (12) from the modules (26).

  13. Horizontal Niobrara play proceeding with caution

    SciTech Connect (OSTI)

    Petzet, G.A.

    1991-11-11T23:59:59.000Z

    This paper reports that caution and careful planning are the watchwords for operators in their approach to horizontal drilling for oil in Puper Cretaceous Niobrara chalk in Colorado and Wyoming. Despite its geologic age equivalence with the Austin chalk of southeastern Texas, the formation has not attracted the same degree of attention or yielded as stunning results as the Austin chalk. Little is yet known about the precise reasons for its sporadic productivity; the exact nature of the fracture system(s) within it; the source and migration history of its oil(s); or the deeper structures and structural trends with which productivity appears associated. Niobrara underlies an area larger than that underlain by the Austin chalk, but Niobrara horizontal drilling so far has proceeded at a guarded pace.

  14. A performance correlation of horizontal solar heaters

    E-Print Network [OSTI]

    Gopffarth, Wilford Hugo

    1964-01-01T23:59:59.000Z

    A PERFORMANCE CORRELATION OF HORIZONTAL SOLAR HEATERS A Thesis by WILFORD HUGO GOPFFARTH Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1964... Major Subject: Chemical Engineering ABSTRACT The purpose of this work was to determine design parameters for flat plastic covered solar collectors. First, the transmittance ? absorp- tion product as a function of the angle of incidence was determined...

  15. Horizontal drilling in shallow, geologically complex reservoirs

    SciTech Connect (OSTI)

    Venable, S.D.

    1992-10-01T23:59:59.000Z

    The objective of this project is to test the concept that multiple hydraulic fracturing from a directionally-drilled horizontal well, using the medium radius build rate method, can increase gas production sufficiently to justify economic viability over conventional stimulated vertical wells. The test well is located in Yuma County, Colorado, in a favorable area of established production to avoid exploration risks. This report presents: background information; project description which covers location selection/geologic considerations; and preliminary work plan. (AT)

  16. Horizontal drilling in shallow, geologically complex reservoirs

    SciTech Connect (OSTI)

    Venable, S.D.

    1992-01-01T23:59:59.000Z

    The objective of this project is to test the concept that multiple hydraulic fracturing from a directionally-drilled horizontal well, using the medium radius build rate method, can increase gas production sufficiently to justify economic viability over conventional stimulated vertical wells. The test well is located in Yuma County, Colorado, in a favorable area of established production to avoid exploration risks. This report presents: background information; project description which covers location selection/geologic considerations; and preliminary work plan. (AT)

  17. A mathematical simulation of horizontal drain-hole performance

    E-Print Network [OSTI]

    Cheng, Thomas Ru-Kang

    1984-01-01T23:59:59.000Z

    Flow Rate Obtained From This Model and From BOSS-AIM. 22 Comparison of The Gas-Oil Ratio Obtained From This Model and From BOSS-AIM. 24 Relative Positions of Conventional Well and Horizontal Drain-Hole in Simulation Runs. . . . . 27 Comparison... of The Economic Oil Recovery Obtained From Horizontal Drain-Hole and From Conventional Well. . . . . . . 28 Comparison of The Cumulative Gas-Oil Ratio Obtained From Horizontal Drain-Hole and From Conventional Well. . . 29 Effect of Horizontal Drain...

  18. Multiple horizontal drainholes can improve production

    SciTech Connect (OSTI)

    Graves, K.S. (Baker Hughes Inteq, Houston, TX (United States))

    1994-02-14T23:59:59.000Z

    Drilling several horizontal sections from a single vertical well bore has improved the drilling and production economics on many wells, especially in South Texas, where multilateral wells are becoming more common. A multilateral well consists of two or more horizontal drainholes drilled from one primary vertical well bore, either as a new well or as a re-entry. There are a number of advantages to drilling multilateral drainholes. Multilateral drainholes reduce drilling costs because only one main vertical bore is drilled (reduces drilling time and wellhead and casing costs). Of primary importance is the increased well production compared to similar single horizontal wells and vertical wells. The use of a single vertical well bore minimizes location, access road, and cleanup costs. Fewer surface production facilities may be necessary, and offshore, increasing the drainage area for a fixed number of well slots gives greater platform flexibility and allows more extensive field development. One disadvantage, however, is the potential complications during well control because two or more well bores are open. Also, the ability to service a particular well bore is more complex. To prevent future well bore service problems, each drainhole must be designed for later re-entry.

  19. Subhas Chandra Bose: darling of the Axis 

    E-Print Network [OSTI]

    Getz, Marshall Jay

    1993-01-01T23:59:59.000Z

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

  20. Three-axis asymmetric radiation detector system

    DOE Patents [OSTI]

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

    2000-01-01T23:59:59.000Z

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

  1. Axis Technologies Group Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbon CaptureAtria PowerAxeon Technology Ltd JumpAxis

  2. Decline curve analysis for horizontal wells

    E-Print Network [OSTI]

    Shih, Min-Yu

    1994-01-01T23:59:59.000Z

    support kept me from losing sight of my goals. Thanks to Sam Hou, Joseph Wang, Robert Liau, James Wang, and Shou for their company and in particular to Li Fan and Mrs. Shou-Lee Chang for their caring and delicious meals when I forgot my dinner. Thanks... Pressure (L/2xe= 0. 2) Composite Dimensionless Flow Rate Integral and Flow Rate Integral Derivative Functions Type Curve for an Infinite-Conductivity Horizontal Well Located in the Center of a Square Drainage Area, Producing at Constant Bottomhole...

  3. Radiative Levitation in Hot Horizontal Branch Stars

    E-Print Network [OSTI]

    W. Landsman

    1999-06-08T23:59:59.000Z

    There is now considerable evidence that horizontal branch (HB) stars hotter than about 11,500 K experience an enormous enhancement of their photospheric iron abundance due to radiative levitation. In globular clusters, the photospheric iron abundance can reach values of [Fe/H] ~ +0.3, or up to two orders of magnitude higher than the cluster iron abundance. Model atmospheres which take into account the iron overabundance are needed for understanding the appearance of the HB in globular cluster color-magnitude diagrams (CMDs), for the derivation of accurate luminosities, gravities and masses, and for the ultraviolet spectral synthesis of old, metal-poor stellar populations.

  4. In situ bioremediation using horizontal wells

    SciTech Connect (OSTI)

    NONE

    1995-04-01T23:59:59.000Z

    In Situ Bioremediation (ISB), which is the term used in this report for Gaseous Nutrient Injection for In Situ Bioremediation, remediates soils and ground water contaminated with volatile organic compounds (VOCs) both above and below the water table. ISB involves injection of air and nutrients (sparging and biostimulation) into the ground water and vacuum extraction to remove .VOCs from the vadose zone concomitant with biodegradation of VOCs. The innovation is in the combination of 3 emerging technologies, air stripping, horizontal wells, and bioremediation via gaseous nutrient injection with a baseline technology, soil vapor extraction, to produce a more efficient in situ remediation system.

  5. Decontamination of large horizontal concrete surfaces outdoors

    SciTech Connect (OSTI)

    Barbier, M.M.; Chester, C.V.

    1980-01-01T23:59:59.000Z

    A study is being conducted of the resources and planning that would be required to clean up an extensive contamination of the outdoor environment. As part of this study, an assessment of the fleet of machines needed for decontaminating large outdoor surfaces of horizontal concrete will be attempted. The operations required are described. The performance of applicable existing equipment is analyzed in terms of area cleaned per unit time, and the comprehensive cost of decontamination per unit area is derived. Shielded equipment for measuring directional radiation and continuously monitoring decontamination work are described. Shielding of drivers' cabs and remote control vehicles is addressed.

  6. Vertical axis wind turbine control strategy

    SciTech Connect (OSTI)

    McNerney, G.M.

    1981-08-01T23:59:59.000Z

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

  7. Two-axis tracking solar collector mechanism

    DOE Patents [OSTI]

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

    1990-01-01T23:59:59.000Z

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

  8. Two-axis tracking solar collector mechanism

    DOE Patents [OSTI]

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

    1992-01-01T23:59:59.000Z

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

  9. Two-axis tracking solar collector mechanism

    DOE Patents [OSTI]

    Johnson, K.C.

    1992-12-08T23:59:59.000Z

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

  10. Bitumen production through a horizontal well

    SciTech Connect (OSTI)

    Livesey, D.B.; Toma, P.

    1987-02-03T23:59:59.000Z

    This patent describes a method for thermal stimulation and production of a viscous hydrocarbon from a reservoir having a productive layer which retains the hydrocarbon until the latter is made flowable by contact with a hot stimulating medium. The method includes the steps of: forming a borehole having a substantially horizontal segment which transverses the productive layer, registering a well completion in the borehole which includes; an elongated perforate well liner, a fluid conduit extending through the liner and having a discharge end, and a well head at the liner upper end communicated with the fluid conduit, positioning a variable length flow diverter in the liner adjacent to the fluid conduit discharge end, whereby to define a quasi-barrier in the liner which is pervious to passage of the hot stimulating medium, and which divides the liner into injection and production segments respectively, heating the productive layer about the substantially horizontal segment of the elongated liner, introducing a pressurized stream of the hot stimulant through the fluid conduit and into the liner injection segment, and producing hydrocarbon emulsion which flows into the liner production segment.

  11. General Engineer / Physical Scientist (Facility Representative)

    Broader source: Energy.gov [DOE]

    Facility Representatives (FRs) are line management's on-site technical representative with responsibility for identifying and evaluating environmental, safety and health issues and concerns,...

  12. Control system for a vertical axis windmill

    DOE Patents [OSTI]

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

    1983-10-18T23:59:59.000Z

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

  13. Three-axis particle impact probe

    DOE Patents [OSTI]

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

    1992-01-01T23:59:59.000Z

    Three-axis particle impact probes detect particle impact vectors along x-, y-, and z-axes by spherical probe head mounted on the outer end of a shaft that is flexibly mounted in silicone rubber at the top of a housing so as to enable motion imparted to the head upon impact to be transmitted to a grounded electrode secured to the shaft within the housing. Excitable electrodes are mounted in the housing in a fixed position, spaced apart from the ground electrode and forming, with the ground electrode, capacitor pairs. Movement of the ground electrode results in changes in capacitance, and these difference in capacitance are used for measurement or derivation of momentum vectors along each of the three axes. In one embodiment, the ground electrode is mounted at the base of the shaft and is secured to a silicone rubber layer at the top of the housing, providing for cantilevered movement. In another embodiment, the shaft is mounted at its mid point in a flexible bushing so that it undergoes pivotal movement around that point.

  14. Sheared bioconvection in a horizontal tube

    E-Print Network [OSTI]

    Croze, O A; Bees, M A; 10.1088/1478-3975/7/4/046001

    2010-01-01T23:59:59.000Z

    The recent interest in using microorganisms for biofuels is motivation enough to study bioconvection and cell dispersion in tubes subject to imposed flow. To optimize light and nutrient uptake, many microorganisms swim in directions biased by environmental cues (e.g. phototaxis in algae and chemotaxis in bacteria). Such taxes inevitably lead to accumulations of cells, which, as many microorganisms have a density different to the fluid, can induce hydrodynamic instabilites. The large-scale fluid flow and spectacular patterns that arise are termed bioconvection. However, the extent to which bioconvection is affected or suppressed by an imposed fluid flow, and how bioconvection influences the mean flow profile and cell transport are open questions. This experimental study is the first to address these issues by quantifying the patterns due to suspensions of the gravitactic and gyrotactic green biflagellate alga Chlamydomonas in horizontal tubes subject to an imposed flow. With no flow, the dependence of the domi...

  15. age horizontal branch: Topics by E-print Network

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

    Stars as an Age Indicator Astrophysics (arXiv) Summary: Surface temperature distribution of horizontal-branch (HB) stars is very sensitive to age in old stellar systems,...

  16. Zero Discharge Water Management for Horizontal Shale Gas Well...

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

    States Government or any agency thereof." Abstract Hydraulic fracturing technology (fracking), coupled with horizontal drilling, has facilitated exploitation of huge natural gas...

  17. Horizontal drilling: Overview of geologic aspects and opportunities

    SciTech Connect (OSTI)

    Stark, P.H. (Petroleum Information Corp., Denver, CO (United States))

    1991-06-01T23:59:59.000Z

    Horizontal drilling and completions may become the most significant petroleum technology enhancement since reflection seismic. Through September 1990, 640 US horizontal completions were recorded, resulting in 532 oil and 69 gas producers. In addition, 345 horizontal wells were drilling or completing and 255 permits were outstanding. Mroe than 60% of historic US horizontal wells will be completed during 1990. Case studies demonstrate higher production rates and improved recoveries for horizontal completions. There are abundant global geologic opportunities for horizontal well technolgoy. Eight geologic criteria with potential for horizontal technology are reviewed. Models and examples showing results are presented for each. Source rocks - Bakken Shale case history, North Dakota; Fractured reservoirs - Austin Chalk case history, Texas; Paleokarst reservoirs - Liuhua field example, South China Sea; and karst reservoir potential, Mediterranean region; Chalk reservoirs - global distribution and Niobrara example, Colorado and Wyoming; Stratigraphic traps - Niagaran Reef example, Michigan basin; and tight, overpressured gas sands, northern Rocky Mountains; Reservoir/heterogeneity - Spraberry trend example, Midland basin; Coal-bed methane - US potential; Coning - Prudhoe Bay example, Alaska. Forecasts showing 5,000 worldwide horizontal completions by the year 2000 are tempered by limited equipment, crews, and recognized opportunity. If, however, economic benefits from case histories are creatively applied to potential geologic opportunities, then horizontal technology may comprise 30% or more of worldwide drilling at the turn of the century. Certainly, a technology that reduces dry-hole and environmental risks, increases productivity, and generates profits with $20/bbl oil could revitalize the domestic onshore industry.

  18. Event Rates for Off Axis NuMI Experiments

    E-Print Network [OSTI]

    B. Viren

    2006-08-25T23:59:59.000Z

    Neutrino interaction rates for experiments placed off axis in the NuMI beam are calculated. Primary proton beam energy is 120 GeV and four locations at 810 km from target and 6, 12, 30 and 40 km off axis are considered. This report is part of the Joint FNAL/BNL Future Long Baseline Neutrino Oscillation Experiment Study.

  19. Method and application of horizontal slice volumetrics to waterflood management and horizontal drilling

    SciTech Connect (OSTI)

    Deshpande, A.; Flemings, P.B. [Pennsylvania State Univ., University Park, PA (United States); Huang, J. [Exxon Production Research Co., Houston, TX (United States)

    1996-12-31T23:59:59.000Z

    A computer mapping program was used to make horizontal slices of pore volume. The goal was to create maps that showed the distribution of pore volume vertically and laterally throughout the reservoir. That information was used for studying waterflood feasibility, monitoring an existing waterflood, and planning a horizontal well. This work was done at the United States Naval Petroleum Reserve No. 1, Elk Hills, CA. The reservoirs are the Miocene aged Northwest Stevens A sands and T & N sands. These sands are a series of stacked deep water turbidites draped across the western nose of a plunging anticline. To determine the reservoir sensitivity to the approach used to calculate horizontal slice volume, two methods were tested. The first involves creation of four isochores, bounded above by the sand top or base and below by the slice top or base, whose volumes are combined to give the slice volume. The second involves creation of a grid of the slice itself from which slice volume is calculated.

  20. Method and application of horizontal slice volumetrics to waterflood management and horizontal drilling

    SciTech Connect (OSTI)

    Deshpande, A.; Flemings, P.B. (Pennsylvania State Univ., University Park, PA (United States)); Huang, J. (Exxon Production Research Co., Houston, TX (United States))

    1996-01-01T23:59:59.000Z

    A computer mapping program was used to make horizontal slices of pore volume. The goal was to create maps that showed the distribution of pore volume vertically and laterally throughout the reservoir. That information was used for studying waterflood feasibility, monitoring an existing waterflood, and planning a horizontal well. This work was done at the United States Naval Petroleum Reserve No. 1, Elk Hills, CA. The reservoirs are the Miocene aged Northwest Stevens A sands and T N sands. These sands are a series of stacked deep water turbidites draped across the western nose of a plunging anticline. To determine the reservoir sensitivity to the approach used to calculate horizontal slice volume, two methods were tested. The first involves creation of four isochores, bounded above by the sand top or base and below by the slice top or base, whose volumes are combined to give the slice volume. The second involves creation of a grid of the slice itself from which slice volume is calculated.

  1. 3-Axis Magnetic Sensor Hybrid The Honeywell HMC2003 is a high sensitivity, three-axis magnetic sensor hybrid

    E-Print Network [OSTI]

    Kleinfeld, David

    3-Axis Magnetic Sensor Hybrid HMC2003 The Honeywell HMC2003 is a high sensitivity, three-axis magnetic sensor hybrid assembly used to measure low magnetic field strengths. Honeywell's most sensitive Reference, Traffic Detection, Proximity Detection and Medical Devices Honeywell continues to maintain

  2. Sheared bioconvection in a horizontal tube

    E-Print Network [OSTI]

    O. A. Croze; E. E. Ashraf; M. A. Bees

    2010-10-01T23:59:59.000Z

    The recent interest in using microorganisms for biofuels is motivation enough to study bioconvection and cell dispersion in tubes subject to imposed flow. To optimize light and nutrient uptake, many microorganisms swim in directions biased by environmental cues (e.g. phototaxis in algae and chemotaxis in bacteria). Such taxes inevitably lead to accumulations of cells, which, as many microorganisms have a density different to the fluid, can induce hydrodynamic instabilites. The large-scale fluid flow and spectacular patterns that arise are termed bioconvection. However, the extent to which bioconvection is affected or suppressed by an imposed fluid flow, and how bioconvection influences the mean flow profile and cell transport are open questions. This experimental study is the first to address these issues by quantifying the patterns due to suspensions of the gravitactic and gyrotactic green biflagellate alga Chlamydomonas in horizontal tubes subject to an imposed flow. With no flow, the dependence of the dominant pattern wavelength at pattern onset on cell concentration is established for three different tube diameters. For small imposed flows, the vertical plumes of cells are observed merely to bow in the direction of flow. For sufficiently high flow rates, the plumes progressively fragment into piecewise linear diagonal plumes, unexpectedly inclined at constant angles and translating at fixed speeds. The pattern wavelength generally grows with flow rate, with transitions at critical rates that depend on concentration. Even at high imposed flow rates, bioconvection is not wholly suppressed and perturbs the flow field.

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

    DOE Patents [OSTI]

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

    2004-06-08T23:59:59.000Z

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

  4. Pennsylvania House of Representatives Republican Policy Committee

    E-Print Network [OSTI]

    Heller, Don

    Pennsylvania House of Representatives Republican Policy Committee Westmoreland County Community, Chairman Turzai and Representative Stairs, for inviting me here this morning to talk to you about funding for higher education in the Commonwealth. I would be remiss if I did not note that Representative Stairs

  5. USING GALOIS LATTICES TO REPRESENT NETWORK DATA

    E-Print Network [OSTI]

    White, Douglas R.

    USING GALOIS LATTICES TO REPRESENT NETWORK DATA Linton C. Freeman* Douglas R. White* Galois-binary adjacency matrix,where each row and each column in the matrix represents a social actor. A cell entry is 1 to represent the networks they study. Graph theoretic representations permit the visu- *University

  6. Horizontal oil well applications and oil recovery assessment. Volume 1: Success of horizontal well technology, Final report

    SciTech Connect (OSTI)

    Deskins, W.G.; McDonald, W.J.; Knoll, R.G.; Springer, S.J.

    1995-03-01T23:59:59.000Z

    Horizontal technology has been applied in over 110 formations in the USA. Volume I of this study addresses the overall success of horizontal technology, especially in less-publicized formations, i.e., other than the Austin Chalk, Bakken, and Niobrara. Operators in the USA. and Canada were surveyed on a formation-by-formation basis by means of a questionnaire. Response data were received describing horizontal well projects in 58 formations in the USA. and 88 in Canada. Operators responses were analyzed for trends in technical and economic success based on lithology (clastics and carbonates) and resource type (light oil, heavy oil, and gas). The potential impact of horizontal technology on reserves was also estimated. A forecast of horizontal drilling activity over the next decade was developed.

  7. Dual-axis hole-drilling ESPI residual stress measurements

    SciTech Connect (OSTI)

    Steinzig, Michael [Los Alamos National Laboratory; Schajer, Gary [UNIV OF BRITISH COLUMBIA

    2008-01-01T23:59:59.000Z

    A novel dual-axis ESPI hole-drilling residual stress measurement method is presented. The method enables the evaluation of all the in-plane normal stress components with similar response to measurement errors, significantly lower than with single-axis measurements. A numerical method is described that takes advantage of, and compactly handles, the additional optical data that are available from the second measurement axis. Experimental tests were conducted on a calibrated specimen to demonstrate the proposed method, and the results supported theoretical expectations.

  8. adrenal axis hpa: Topics by E-print Network

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

    off-axis jet model of GRBs, we can reproduce the observed unusual properties of the prompt emission of GRB980425, such as the extremely low isotropic equivalent gamma-ray...

  9. axis testis transcriptome: Topics by E-print Network

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

    off-axis jet model of GRBs, we can reproduce the observed unusual properties of the prompt emission of GRB980425, such as the extremely low isotropic equivalent gamma-ray...

  10. axis rfp plasmas: Topics by E-print Network

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

    off-axis jet model of GRBs, we can reproduce the observed unusual properties of the prompt emission of GRB980425, such as the extremely low isotropic equivalent gamma-ray...

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

    E-Print Network [OSTI]

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

    2014-01-01T23:59:59.000Z

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

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

    Broader source: Energy.gov [DOE]

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

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

    E-Print Network [OSTI]

    Woodruff, Rick Bryan

    2007-01-01T23:59:59.000Z

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

  14. axis rotating states: Topics by E-print Network

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

    20 21 22 23 24 25 Next Page Last Page Topic Index 21 Rotation speed and stellar axis inclination from p modes: How CoRoT would see other suns Astrophysics (arXiv) Summary: In the...

  15. axis view techniques: Topics by E-print Network

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

    8 An Asymmetric, Energetic Type Ic Supernova Viewed Off-Axis, and a Link to Gamma-Ray Bursts Astrophysics (arXiv) Summary: Type Ic supernovae, the explosions following the...

  16. Optimization of well length in waterflooding a five-spot pattern of horizontal wells

    E-Print Network [OSTI]

    Jimenez, Zulay J.

    1992-01-01T23:59:59.000Z

    for the horizontal wells and provide a good return on investment. Horizontal Wells in Waterflood Pr t A worldwide interest exists today in drilling horizontal wells to increase productivity, Horizontal wells can be used in any phase of reservoir recovery... efficiency7. Several investigatorss-ic have studied waterflooding using horizontal wells. droman et al, s reported a field application using horizontal wells in the Prudhoe Bay Unit where the main reservoir drive mechanism is gas cap expansion...

  17. Application of horizontal wells in steeply dipping reservoirs 

    E-Print Network [OSTI]

    Lopez Navarro, Jose David

    1995-01-01T23:59:59.000Z

    A three-dimensional reservoir simulation study is performed to evaluate the impact of horizontal well applications on oil recovery from steeply dipping reservoirs. The Provincia field, located in Colombia, provided the ...

  18. Horizontal Beam Tubes - HFIR Technical Parameters | ORNL Neutron...

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

    Beam Tubes The reactor has four horizontal beam tubes that supply the neutrons to the neutron scattering instruments. Details for each beam tube and instrument can be found on...

  19. Horizontal Well Placement Optimization in Gas Reservoirs Using Genetic Algorithms 

    E-Print Network [OSTI]

    Gibbs, Trevor Howard

    2011-08-08T23:59:59.000Z

    of the genetic algorithm was analyzed through five different case scenarios, one involving a vertical well and four involving horizontal wells. The genetic algorithm approach is used to evaluate the effect of well placement in heterogeneous and anisotropic...

  20. Horizontal well successfully drilled in Black Warrior basin

    SciTech Connect (OSTI)

    Butler, J.R. [Mississippi Valley Gas Co., Jackson, MS (United States); Skeen, B. [Sperry-Sun Drilling Services, Dallas, TX (United States)

    1996-07-22T23:59:59.000Z

    The first horizontal well successfully drilled and completed in the very abrasive Black Warrior basin required the use of several state-of-the-art drilling technologies and quick decision making at the well site. Mississippi Valley Gas Co.`s first horizontal well in the Goodwin natural gas storage field has a deliverability about six times that of a conventional vertical well in the same reservoir. The MVG Howard 35-4 No. 1 was drilled in 23 days during September and October 1995. The well reached 1,805 ft true vertical depth (TVD) and 3,660 ft measured depth. The horizontal section length was 1,650 ft. The well reached the target, and the economics were favorable. The paper describes the geology of the basin, Goodwin field, the decision for a horizontal well, the difficulties encountered, and evaluation of the technologies used.

  1. Horizontal non-contact slumping of flat glass

    E-Print Network [OSTI]

    Sung, Edward, S.M. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    This paper continues the work of M. Akilian and A. Husseini on developing a noncontact glass slumping/shaping process. The shift from vertical slumping to horizontal slumping is implemented and various technologies required ...

  2. Simulation studies of waterflood performance with horizontal wells

    E-Print Network [OSTI]

    Ferreira, Horacio

    1995-01-01T23:59:59.000Z

    Two-and three-dimensional simulation studies have been carried out to evaluate waterflood oil recovery in a 40-acre 5-spot pattern using horizontal and vertical well systems. The three-dimensional simulation results indicate that the parameters...

  3. Optimization of fractured well performance of horizontal gas wells

    E-Print Network [OSTI]

    Magalhaes, Fellipe Vieira

    2009-06-02T23:59:59.000Z

    In low-permeability gas reservoirs, horizontal wells have been used to increase the reservoir contact area, and hydraulic fracturing has been further extending the contact between wellbores and reservoirs. This thesis presents an approach...

  4. Refrigerant forced-convection condensation inside horizontal tubes

    E-Print Network [OSTI]

    Bae, Soonhoon

    1968-01-01T23:59:59.000Z

    Condensing heat transfer rates inside a horizontal tube were investigated -for large quality changes across the tube. The proposed correlation is a modification of the work of Rohsenow, Webber and Ling [29]. The result of ...

  5. Nursing Faculty Descriptions of Horizontal Violence in Academe

    E-Print Network [OSTI]

    Davis, Nancy P.

    2014-08-31T23:59:59.000Z

    Horizontal violence (HV) is a well-documented phenomenon in nursing that has been studied primarily among staff nurses in clinical practice settings. Characteristics of peer-to-peer HV include, but are not limited to, ...

  6. Pressure transient testing and productivity analysis for horizontal wells 

    E-Print Network [OSTI]

    Cheng, Yueming

    2004-11-15T23:59:59.000Z

    This work studied the productivity evaluation and well test analysis of horizontal wells. The major components of this work consist of a 3D coupled reservoir/wellbore model, a productivity evaluation, a deconvolution ...

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

    SciTech Connect (OSTI)

    Palacio Mizrahi, J. H. [Physics Department, Technion, Haifa 32000 (Israel)

    2014-06-15T23:59:59.000Z

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

  8. Water coning calculations for vertical and horizontal wells 

    E-Print Network [OSTI]

    Yang, Weiping

    1990-01-01T23:59:59.000Z

    recovery of several wells coning water. Since their type curves are specific for the data they investigated, it can not serve as a general method of coning evaluation. Addington'2 developed a set of gas coning correlations for 3-D coarse grid... for predicting (1) critical coning rate, (2) breakthrough time, and (3) WOR after breakthrough in both vertical and horizontal wells. Two hand calculation methods had been developed in this study. Either of them applies to both vertical and horizontal wells...

  9. Kick circulation analysis for extended reach and horizontal wells

    E-Print Network [OSTI]

    Long, Maximilian Mark

    2005-02-17T23:59:59.000Z

    KICK CIRCULATION ANALYSIS FOR EXTENDED-REACH AND HORIZONTAL WELLS A Thesis by MAXIMILIAN M. LONG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 2004 Major Subject: Petroleum Engineering KICK CIRCULATION ANALYSIS FOR EXTENDED-REACH AND HORIZONTAL WELLS A Thesis by MAXIMILIAN M. LONG Submitted...

  10. SATURATED-SUBCOOLED STRATIFIED FLOW IN HORIZONTAL PIPES

    SciTech Connect (OSTI)

    Richard Schultz

    2010-08-01T23:59:59.000Z

    Advanced light water reactor systems are designed to use passive emergency core cooling systems with horizontal pipes that provide highly subcooled water from water storage tanks or passive heat exchangers to the reactor vessel core under accident conditions. Because passive systems are driven by density gradients, the horizontal pipes often do not flow full and thus have a free surface that is exposed to saturated steam and stratified flow is present.

  11. The Korarchaeota: Archaeal orphans representing an ancestral lineage of life

    SciTech Connect (OSTI)

    Elkins, James G.; Kunin, Victor; Anderson, Iain; Barry, Kerrie; Goltsman, Eugene; Lapidus, Alla; Hedlund, Brian; Hugenholtz, Phil; Kyrpides, Nikos; Graham, David; Keller, Martin; Wanner, Gerhard; Richardson, Paul; Stetter, Karl O.

    2007-05-01T23:59:59.000Z

    Based on conserved cellular properties, all life on Earth can be grouped into different phyla which belong to the primary domains Bacteria, Archaea, and Eukarya. However, tracing back their evolutionary relationships has been impeded by horizontal gene transfer and gene loss. Within the Archaea, the kingdoms Crenarchaeota and Euryarchaeota exhibit a profound divergence. In order to elucidate the evolution of these two major kingdoms, representatives of more deeply diverged lineages would be required. Based on their environmental small subunit ribosomal (ss RNA) sequences, the Korarchaeota had been originally suggested to have an ancestral relationship to all known Archaea although this assessment has been refuted. Here we describe the cultivation and initial characterization of the first member of the Korarchaeota, highly unusual, ultrathin filamentous cells about 0.16 {micro}m in diameter. A complete genome sequence obtained from enrichment cultures revealed an unprecedented combination of signature genes which were thought to be characteristic of either the Crenarchaeota, Euryarchaeota, or Eukarya. Cell division appears to be mediated through a FtsZ-dependent mechanism which is highly conserved throughout the Bacteria and Euryarchaeota. An rpb8 subunit of the DNA-dependent RNA polymerase was identified which is absent from other Archaea and has been described as a eukaryotic signature gene. In addition, the representative organism possesses a ribosome structure typical for members of the Crenarchaeota. Based on its gene complement, this lineage likely diverged near the separation of the two major kingdoms of Archaea. Further investigations of these unique organisms may shed additional light onto the evolution of extant life.

  12. An Introduction to Venture Capital Granite representatives

    E-Print Network [OSTI]

    Anderson, Richard

    May 2006 An Introduction to Venture Capital #12;2 Granite representatives Sam Kingsland ­ Managing;3 Introduction to Granite Ventures Founded in 1992 Granite has 9 investment professionals Over $1B under

  13. Facility Representative Program, Criteria & Review Approach Documents

    Broader source: Energy.gov [DOE]

    This page provides Criteria Review and Approach Documents (CRADS) to assist Facility Representatives. Please submit your CRADS for posting by sending them to the HQ FR Program Manager. Please include the subject, date, and a contact person.

  14. General Engineer/Physical Scientist (Facility Representative)

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will serve as an on-site technical representative to identify and evaluate environmental, safety, and health issues and concerns; as well as diagnose root...

  15. Representing Information Collections for Visual Cognition 

    E-Print Network [OSTI]

    Koh, Eunyee

    2009-05-15T23:59:59.000Z

    The importance of digital information collections is growing. Collections are typically represented with text-only, in a linear list format, which turns out to be a weak representation for cognition. We learned this from empirical research...

  16. Horizontal wells enhance development of thin offshore gas reservoirs

    SciTech Connect (OSTI)

    Gidman, B. [Chevron USA, Lafayette, LA (United States); Hammons, L.R.B.; Paulk, M.D. [Baker Hughes INTEQ, Lafayette, LA (United States)

    1995-03-01T23:59:59.000Z

    Horizontal wells in clastic rocks can reduce water coning problems and increase production rates as much as six-fold. They are now practical to drill for developing Gulf of Mexico gas reservoirs that may be less than 10 ft thick. In 1991, Chevron USA began exploring the feasibility of developing thin gas reservoirs in western Gulf of Mexico (GOM) fields. A critical element that needed to be addressed was the minimum target thickness that is geologically and operationally practical to drill with current horizontal well technology. Chevron`s first GOM horizontal well spudded in February 1992. The target was 31 ft of net effective gas on water in a massive Pleistocene sand at 1,700 ft TVD. Chevron spudded a second horizontal well in the same field during June 1993. This well was geosteered into a 19-ft gas sand with no immediate water contact at 1,650 ft TVD. The entire 1,000-ft horizontal section was interpreted as gas from the MWD tool response. A spinner survey was not run in this hole. At 19 MMcfd of gas, this well also proved to be a major economic success because of its low cost. After the second completion, Chevron`s next proposed well targeted a gas reservoir with a maximum thickness of only 7 ft.

  17. Technical basis document for the release from contaminated facility representative accident and associated represented hazardous conditions

    SciTech Connect (OSTI)

    OBERG, B.D.

    2003-03-22T23:59:59.000Z

    This document supports the Tank Farms Documented Safety Analysis and describes the risk binning process and the technical basis for assigning risk bins for the release from contaminated facility representative accident and associated represented hazardous conditions. The representative accidents qualitatively considered are fires, deflagrations, and load drops in contaminated areas. The risks from a separate evaluation of compressed gas hazards are also summarized.

  18. Horizontal displacements contribution to tsunami wave energy balance

    E-Print Network [OSTI]

    Dutykh, Denys; Chubarov, Leonid; Shokin, Yuriy

    2010-01-01T23:59:59.000Z

    The main reason for the generation of tsunamis is the deformation of the bottom of the ocean caused by an underwater earthquake. Usually, only the vertical bottom motion is taken into accound while the horizontal displacements are neglected. In the present paper we study both the vertical and the horizontal bottom motion while we propose a novel methodology for reconstructing the bottom coseismic displacements field which is transmitted to the free surface using a new three-dimensional Weakly Nonlinear (WN) approach. We pay a special attention to the evolution of kinetic and potential energies of the resulting wave while the contribution of horizontal displacements into wave energy balance is also quantified. Approaches proposed in this study are illustrated on the July 17, 2006 Java tsunami.

  19. Teamwork and geosteering pay off in horizontal project

    SciTech Connect (OSTI)

    Schroeder, T.; Mathis, D. (Baker Hughes Inteq, Houston, TX (United States)); Howard, R.; Williams, G.; Sun, J. (Pogo Producing Co., Houston, TX (United States))

    1995-02-27T23:59:59.000Z

    The paper describes the well drilling of five horizontal gas wells in the Eugene Island Block 295, offshore Louisiana. The field came into production in 1973. As of 1 January 1994, the cumulative production had been approximately 2.9 million bbl of oil and condensate and 386 billion cu ft of natural gas. A project was undertaken to develop three very shallow gas sands at about 1,200, 1,800, and 2,500 feet. The paper describes the mud system, casing program, directional program, horizontal program, MWD logging, and initial production test results.

  20. Tracing the Metal-Poor M31 Stellar Halo with Blue Horizontal Branch Stars

    E-Print Network [OSTI]

    Williams, Benjamin F; Gilbert, Eric F BellKaroline M; Guhathakurta, Puragra; Dorman, Claire; Lauer, Tod R; Seth, Anil C; Kalirai, Jason S; Rosenfield, Philip; Girardi, Leo

    2015-01-01T23:59:59.000Z

    We have analyzed new HST/ACS and HST/WFC3 imaging in F475W and F814W of two previously-unobserved fields along the M31 minor axis to confirm our previous constraints on the shape of M31's inner stellar halo. Both of these new datasets reach a depth of at least F814W$blue horizontal branch (BHB) of the field as a distinct feature of the color-magnitude diagram. We measure the density of BHB stars and the ratio of BHB to red giant branch stars in each field using identical techniques to our previous work. We find excellent agreement with our previous measurement of a power-law for the 2-D projected surface density with an index of 2.6$^{+0.3}_{-0.2}$ outside of 3 kpc, which flattens to $\\alpha <$1.2 inside of 3 kpc. Our findings confirm our previous suggestion that the field BHB stars in M31 are part of the halo population. However, the total halo profile is now known to differ from this BHB profile, which suggests that we have isolated the metal-poor component. This component ...

  1. An iconic approach to representing climate change

    E-Print Network [OSTI]

    Feigon, Brooke

    1 An iconic approach to representing climate change Saffron Jessica O'Neill A thesis submitted-experts to be meaningfully engaged with the issue of climate change. This thesis investigates the value of engaging non-experts with climate change at the individual level. Research demonstrates that individuals perceive climate change

  2. The Simplicity Device: Your Personal Mobile Representative

    E-Print Network [OSTI]

    The Simplicity Device: Your Personal Mobile Representative Giovanni Bartolomeo1, Francesca Martire1 mobile phone that stores and handles personal information about the user. The Simplicity Device can be connected (e.g. via Bluetooth) to several other devices thus allowing personalization of services

  3. Acid Placement in Acid Jetting Treatments in Long Horizontal Wells

    E-Print Network [OSTI]

    Sasongko, Hari

    2012-07-16T23:59:59.000Z

    of Vertically Extensive, Heterogeneous Gas Reservoirs. SPE Prod & Fac 25 (3): 388-397. SPE-124881-PA. http://dx.doi.org/10.2118/124881-PA. Ritchie, B., Abbasy, I., Pitts, M.J., and White, B. 2008. Challenges in Completing Long Horizontal Wells Selectively...

  4. Application Study of a Single House Horizontal Heating System 

    E-Print Network [OSTI]

    Hang, Y.; Ying, D.

    2006-01-01T23:59:59.000Z

    the different forms of heating systems suited for single household metering. We introduce especially the single house horizontal spanning system and show how to select the heat flow rate of the radiator. We also study the distribution rule of the heat...

  5. Granular slumping on a horizontal surface E. Lajeunesse

    E-Print Network [OSTI]

    Lajeunesse, Eric

    and a semicircular tube, allowing us to compare two-dimensional and axisymmetric flows, with particular focusGranular slumping on a horizontal surface E. Lajeunesse Laboratoire de Dynamique des Systèmes of an experimental investigation of the flow induced by the collapse of a column of granular material glass beads

  6. Modeling performance of horizontal, undulating, and multilateral wells

    E-Print Network [OSTI]

    Kamkom, Rungtip

    2009-05-15T23:59:59.000Z

    .....................................................................................................1 1.2 Literature Review............................................................................................2 1.3 Objectives........................................................................................................4 1.4...........................................................18 2.3 Two-Phase Reservoirs...................................................................................21 2.4 Systematic Table for Horizontal Well Inflow Performance..........................22 2.5 Wellbore Pressure Drop...

  7. Transient horizontal magnetic fields in solar plage regions

    E-Print Network [OSTI]

    R. Ishikawa; S. Tsuneta; K. Ichimoto; H. Isobe; Y. Katsukawa; B. W. Lites; S. Nagata; T. Shimizu; R. A. Shine; Y. Suematsu; T. D. Tarbell; A. M. Title

    2008-02-13T23:59:59.000Z

    We report the discovery of isolated, small-scale emerging magnetic fields in a plage region with the Solar Optical Telescope aboard Hinode. Spectro-polarimetric observations were carried out with a cadence of 34 seconds for the plage region located near disc center. The vector magnetic fields are inferred by Milne-Eddington inversion. The observations reveal widespread occurrence of transient, spatially isolated horizontal magnetic fields. The lateral extent of the horizontal magnetic fields is comparable to the size of photospheric granules. These horizontal magnetic fields seem to be tossed about by upflows and downflows of the granular convection. We also report an event that appears to be driven by the magnetic buoyancy instability. We refer to buoyancy-driven emergence as type1 and convection-driven emergence as type2. Although both events have magnetic field strengths of about 600 G, the filling factor of type1 is a factor of two larger than that of type2. Our finding suggests that the granular convection in the plage regions is characterized by a high rate of occurrence of granular-sized transient horizontal fields.

  8. The Model Morphing Approach -Horizontal Transformations between Business Process

    E-Print Network [OSTI]

    The Model Morphing Approach - Horizontal Transformations between Business Process Models Marion and business to busi- ness interoperability, there is a need for model transformations in the area of business this paper concentrates on transformations of models between different business process modeling languages

  9. Improved oil recovery using horizontal wells at Elk Hills, California

    SciTech Connect (OSTI)

    Gangle, F.J.; Schultz, K.L.; McJannet, G.S.; Ezekwe, N.

    1995-03-01T23:59:59.000Z

    Eight horizontal wells have been drilled and completed in a steeply dipping Stevens sand reservoir in the Elk Hills field, Kern County, California. The subject reservoir, called the Stevens 26R, is a turbidite channel sand deposit one mile wide, three miles long, and one mile deep. Formation beds have a gross thickness up to 1,500 feet and dips as high as 60 degrees on the flanks. The original oil column of 1,810 feet has been pulled down to 200 feet by continual production since 1976. The reservoir management operating strategy has been full pressure maintenance by crestal gas injection since 1976. The steep dip of the formation makes gravity drainage the dominant drive mechanism. Additionally, improved recovery is coming from cycling dry gas through the large secondary gas cap region. The prudent placement of the horizontal wells above the oil/water contact promises to improve oil recovery and extend the operating life of the reservoir. Field results are given to compare the performance of the horizontal wells with the conventional wells. The horizontal wells produce at higher rates, lower draw downs, and lower gas/oil ratio which will extend the life of the project and result in higher recovery.

  10. Horizontal wells improve recovery at the Elk Hills Petroleum Reserve

    SciTech Connect (OSTI)

    Rintoul, B.

    1995-11-01T23:59:59.000Z

    In 1988 the US Department of Energy and Bechtel implemented a program to slow production declines in the Elk Hills 26R pool sand of the Naval Petroleum Reserve No. 1. It was also hoped horizontal wells would increase the production rate, decrease gas production and extend economic life of the reservoir. The Stevens sand pool targeted for the project is a high-quality, sand-rich turbidite channel system encapsulated within Miocene Monterey siliceous shales, mudstones and associated sediments. The pool is about 3-miles long by 3/4-mile wide. The paper describes the specifications and drilling of the first four out of the 14 horizontal wells drilled at this facility. Horizontal drilling technology has completely altered the future of the 26R pool. In 1980 estimated ultimate recovery (EUR) from the sand was 211 million bbl. With the latest horizontal well drilling campaign, the pool is expected to pass that estimate in 1997 when oil production is forecasted to be at least 13,000 b/d. EUR form the 26R sand now is more than 250 million bbl, and even that estimate is being revised upward.

  11. Horizontal Air Flow Drying Foods at Home Safely

    E-Print Network [OSTI]

    Horizontal Air Flow Drying Foods at Home Safely Choosing a Food Dehydrator Drying is one. The thermostat should go up to 160 degrees F. The unit should have a fan or blower for air circulation. Mesh purposes. Types of Dehydrators There are two main types of dehydrators: those with vertical air flow

  12. Acid diversion is critical in horizontal gas well treatments

    SciTech Connect (OSTI)

    Ali, S.A. [Chevron USA Production Co., New Orleans, LA (United States); Bui, H.N. [Chevron USA Production Co., Lafayette, LA (United States); Edwards, M.B. [Baker Hughes INTEQ, Houston, TX (United States)

    1996-04-01T23:59:59.000Z

    An acid treatment design for a horizontal well in the West Cameron area of the Gulf of Mexico successfully used alternating stages of foamed and nitrified 15% HCl for diversion. The subject well was drilled with a sized-salt fluid system to 3,493-ft MD including a 1,274-ft, 8{1/2}-in. horizontal openhole section. The horizontal openhole section was completed with 1,042 ft of 5-in., 0.008-gauge, 40.60-mesh dual prepack screen. Following placement of the completion assembly, the 10.5-ppg sized salt system used in the horizontal section was dislaced with a 50-bbl, sheared, high-viscosity push pill, followed by 50 bbl of 10.0-ppg filtered, NaCl solution. A 50-bbl, 15% HCl acid breaker solution was then spotted across the formation and allowed to soak on the remaining filter cake for 6 hours. The breaker was then circulated out with 9.5-ppg NaCl brine. Chlorides were monitored to determine the relative amount of filter cake cleanup. This paper reviews the operation and resulting performance of this treatment.

  13. Experimental investigation of a horizontal flexible-membrane wave barrier

    E-Print Network [OSTI]

    Choi, Hae-Jin

    1997-01-01T23:59:59.000Z

    A series of experiments is conducted in a two-dimensional glass-walled wave tank to confirm numerical solutions based on two-dimensional linear hydro-elastic theory for a horizontal flexible-membrane wave barrier. The model test is performed by a...

  14. Simulating a Nationally Representative Housing Sample Using EnergyPlus

    E-Print Network [OSTI]

    Hopkins, Asa S.

    2011-01-01T23:59:59.000Z

    Simulating a Nationally Representative Housing Sample UsingSimulating a Nationally Representative Housing Sample Usingcalibrated, nationally representative set of simulated homes

  15. Selection of bioclimatically representative biological reserve systems under climate change

    E-Print Network [OSTI]

    Pyke, C R; Fischer, Douglas T

    2005-01-01T23:59:59.000Z

    of bioclimatically representative biological reserve systemsthat are bioclimatically representative across a range ofa ?at line (i.e. a representative sample of current climate

  16. Drug representatives: Giving you lunch or stealing your soul?

    E-Print Network [OSTI]

    Higgins, Steven P

    2007-01-01T23:59:59.000Z

    with pharmaceutical representatives are too useful topharmaceutical sales representatives. JAMA. 1995 Apr 26;273(Drug representatives: Giving you lunch or stealing your

  17. Examination of Hydrate Formation Methods: Trying to Create Representative Samples

    E-Print Network [OSTI]

    Kneafsey, T.J.

    2012-01-01T23:59:59.000Z

    Methods: Trying to Create Representative Samples Timothy J.Methods: Trying to Create Representative Samples Timothy J.Introduction Forming representative gas hydrate-bearing

  18. An overview of craniospinal axis fields and field matching

    SciTech Connect (OSTI)

    Scott, Robin L., E-mail: robinscott631@gmail.com

    2013-01-01T23:59:59.000Z

    Many methods are implemented for craniospinal axis (CSA) radiation treatment (RT). This paper’s goal is to define correctly matched CSA RT fields. Overlap or a space between matched RT fields can create variances of dose and the possibility of negative side effects or disease recurrence, respectively. An accurate CSA RT match procedure is created with localization markers, immobilization devices, equations, feathered matches, safety gap, and portal imaging. A CS match angle is predetermined to optimize patient position before immobilization device fabrication. Various central axis (CA) placements within the brain and spine fields that effect gantry, table, and collimator rotation are described. An overview of the methods used to create CSA RT fields and matches is presented for optimal CSA RT implementation. In addition, to the author’s knowledge, this is the first time that a prone CSA RT with anesthesia has been described.

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

    SciTech Connect (OSTI)

    Ekdahl, Carl A. [Los Alamos National Laboratory

    2012-04-24T23:59:59.000Z

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

  20. Data structures and apparatuses for representing knowledge

    DOE Patents [OSTI]

    Hohimer, Ryan E; Thomson, Judi R; Harvey, William J; Paulson, Patrick R; Whiting, Mark A; Tratz, Stephen C; Chappell, Alan R; Butner, Robert S

    2014-02-18T23:59:59.000Z

    Data structures and apparatuses to represent knowledge are disclosed. The processes can comprise labeling elements in a knowledge signature according to concepts in an ontology and populating the elements with confidence values. The data structures can comprise knowledge signatures stored on computer-readable media. The knowledge signatures comprise a matrix structure having elements labeled according to concepts in an ontology, wherein the value of the element represents a confidence that the concept is present in an information space. The apparatus can comprise a knowledge representation unit having at least one ontology stored on a computer-readable medium, at least one data-receiving device, and a processor configured to generate knowledge signatures by comparing datasets obtained by the data-receiving devices to the ontologies.

  1. TECHNICAL BASIS FOR THE NUCLEAR CRITICALITY REPRESENTATIVE ACCIDENT & ASSOCIATED REPRESENTED HAZARDOUS CONDITIONS

    SciTech Connect (OSTI)

    GRIGSBY, J.M.

    2005-03-03T23:59:59.000Z

    Technical Basis Document for the Nuclear Criticality Representative Accident and Associate Represented Hazardous Conditions. Revision 2 of RPP-12371 provides accident consequence estimates for a hypothetical criticality event in an above grade facility (e.g. DBVS, CH-TRUM, and S-109 PWRS). This technical basis document was developed to support RPP-13033, ''Tank Farms Documented Safety Analysis (DSA)'', and describes the risk binning process and the technical basis for assigning risk bins for the nuclear criticality representative accident and associated hazardous conditions. The purpose of the risk binning process is to determine the need for safety-significant structures, systems, and components (SSC) and technical safety requirement (TSR)-level controls for a given representative accident or represented hazardous condition based on an evaluation of the frequency and consequence. Note that the risk binning process is not applied to facility workers, because all facility worker hazardous conditions are considered for safety-significant SSCs and/or TSR-level controls.

  2. Horizontal-well pilot waterflood tests shallow, abandoned field

    SciTech Connect (OSTI)

    McAlpine, J.L. (White Buffalo Petroleum Co., Tulsa, OK (US)); Joshi, S.D. (Joshi Technologies International Inc., Tulsa, OK (US))

    1991-08-05T23:59:59.000Z

    This paper reports on the suitability of using horizontal wells in a waterflood of shallow, partially depleted sands which will be tested in the Jennings field in Oklahoma. The vertical wells drilled in the Jennings field intersect several well-known formations such as Red Fork, Misner, and Bartlesville sand. Most of these formations have been produced over a number of years, and presently no wells are producing in the field. In the 1940s, 1950s, and 1960s, wells were drilled on 10-acre spacing, and the last well was plugged in 1961. The field was produced only on primary production and produced approximately 1 million bbl of oil. Because the field was not waterflooded, a large potential exists to produce from the field using secondary methods. To improve the economics for the secondary process, a combination of horizontal and vertical wells was considered.

  3. The Critical Rayleigh Number in Horizontal Convection for $\\Pran=1$

    E-Print Network [OSTI]

    Sun, L; Sun, De-Jun; Sun, Liang

    2007-01-01T23:59:59.000Z

    We report the numerical simulations of the horizontal convection within a rectangle cavity tank at high Rayleigh numbers. The physical solution of horizontal convection depends the space resolution of the meshes. The mesh number $N$ is proportion to $Ra^{1/3}$. The unstable numerical solutions are obtained as $Npower law also implies that the space resolution is dominated by the viscosity and heat diffusion. It implies that the special resolution is dominated by viscosity and thermal diffusivity but the length of the tank. Moreover, there is a Hopf bifurcation from steady solutions to unsteady solutions and the critical Rayleigh number $Ra_c$ is obtained as $5.53\\times 10^8

  4. Non-representative quantum mechanical weak values

    E-Print Network [OSTI]

    B. E. Y. Svensson

    2015-03-06T23:59:59.000Z

    The operational definition of a weak value for a quantum mechanical system involves the limit of the weak measurement strength tending to zero. I study how this limit compares to the situation for the undisturbed (no weak measurement) system. Under certain conditions, which I investigate, this limit is discontinuous in the sense that it does not merge smoothly to the Hilbert space description of the undisturbed system. Hence, in these discontinuous cases, the weak value does not represent the undisturbed system. As a result, conclusions drawn from such weak values regarding the properties of the studied system cannot be upheld. Examples are given.

  5. On Positive Integers Represented as Arithmetic Series

    E-Print Network [OSTI]

    Dimitris Sardelis

    2008-06-27T23:59:59.000Z

    The aim of the present article is to explore the possibilities of representing positive integers as sums of other positive integers and highlight certain fundamental connections between their multiplicative and additive properties. In particular, we shall be concerned with the representation of positive integers as arithmetic series of the simplest kind, i.e., either as sums of successive odd positive numbers, or as sums of successive even positive numbers (both treated as Problem 1), or as sums of consecutive positive integers (treated as Problem 2).

  6. Predicting horizontal well performance in solution-gas drive reservoirs

    E-Print Network [OSTI]

    Plahn, Sheldon Von

    1986-01-01T23:59:59.000Z

    of 48 reservoir simulation runs Tl". e simulation runs encompassed a wide rar ge of PVT properties, relative perrnieability characteristics, roc} properties, and well configui ations These type curves can be used to estimate future production..., and formation thickness to drainage radius were constants of 500 and 0. 067 respectively Landrum et al, presented a diagram which could be used to deter mine the ratio of pi oductivities between horizontal and vei tical wells for the specific conditions mer...

  7. Pressure transient testing and productivity analysis for horizontal wells

    E-Print Network [OSTI]

    Cheng, Yueming

    2004-11-15T23:59:59.000Z

    Page 2-23 Flux distribution along infinite conductivity horizontal wellbore for case 2-3. ............ 45 2-24 Pressure derivative from uniform flux solution at equivalent points for case 2-3......... 47 2-25 Deviation of uniform flux solution... at equivalent points from infinite conductivity solution for case 2-3 (semilog plot)............................................................................ 48 2-26 Deviation of uniform flux solution at equivalent points from infinite conductivity...

  8. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, B.M.; Miyano, K.; Ketterson, J.B.

    1983-11-08T23:59:59.000Z

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed. 5 figs.

  9. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, Bernard M. (Oak Park, IL); Miyano, Kenjiro (Downers Grove, IL); Ketterson, John B. (Evanston, IL)

    1983-01-01T23:59:59.000Z

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

  10. Horizontal film balance having wide range and high sensitivity

    DOE Patents [OSTI]

    Abraham, B.M.; Miyano, K.; Ketterson, J.B.

    1981-03-05T23:59:59.000Z

    A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.

  11. The NanoMax-TSTM three-axis stage offers an unmatched combination of

    E-Print Network [OSTI]

    Kik, Pieter

    555 Spacer Block to Raise Optical- Axis Height to 125-mm 17 AMA 554 ©2002 MELLES GRIOT MCE 1042 03 holes threaded M2 on 20 centers dimensions: millimeters 17 MAX 302 3-axis stage MELLES GRIOT

  12. Building Energy Optimization (BEopt) Software | Department of...

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

    costs in year from 0-2,500 on the vertical axis. The horizontal axis displays energy savings in % from 0-100. There's a curved line representing cash flow with four points...

  13. Horizontal natural gas storage caverns and methods for producing same

    DOE Patents [OSTI]

    Russo, Anthony (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    The invention provides caverns and methods for producing caverns in bedded salt deposits for the storage of materials that are not solvents for salt. The contemplated salt deposits are of the bedded, non-domed variety, more particularly salt found in layered formations that are sufficiently thick to enable the production of commercially usefully sized caverns completely encompassed by walls of salt of the formation. In a preferred method, a first bore hole is drilled into the salt formation and a cavity for receiving insolubles is leached from the salt formation. Thereafter, at a predetermined distance away from the first bore hole, a second bore hole is drilled towards the salt formation. As this drill approaches the salt, the drill assumes a slant approach and enters the salt and drills through it in a horizontal direction until it intersects the cavity for receiving insolubles. This produces a substantially horizontal conduit from which solvent is controlledly supplied to the surrounding salt formation, leaching the salt and producing a concentrated brine which is removed through the first bore hole. Insolubles are collected in the cavity for receiving insolubles. By controlledly supplying solvent, a horizontal cavern is produced with two bore holes extending therefrom.

  14. Natural convection heat transfer within horizontal spent nuclear fuel assemblies

    SciTech Connect (OSTI)

    Canaan, R.E.

    1995-12-01T23:59:59.000Z

    Natural convection heat transfer is experimentally investigated in an enclosed horizontal rod bundle, which characterizes a spent nuclear fuel assembly during dry storage and/or transport conditions. The basic test section consists of a square array of sixty-four stainless steel tubular heaters enclosed within a water-cooled rectangular copper heat exchanger. The heaters are supplied with a uniform power generation per unit length while the surrounding enclosure is maintained at a uniform temperature. The test section resides within a vacuum/pressure chamber in order to subject the assembly to a range of pressure statepoints and various backfill gases. The objective of this experimental study is to obtain convection correlations which can be used in order to easily incorporate convective effects into analytical models of horizontal spent fuel systems, and also to investigate the physical nature of natural convection in enclosed horizontal rod bundles in general. The resulting data consist of: (1) measured temperatures within the assembly as a function of power, pressure, and backfill gas; (2) the relative radiative contribution for the range of observed temperatures; (3) correlations of convective Nusselt number and Rayleigh number for the rod bundle as a whole; and (4) correlations of convective Nusselt number as a function of Rayleigh number for individual rods within the array.

  15. Eye Movements During Multi-Axis Whole-Body Rotations CHRISTOPHER J. BOCKISCH,1

    E-Print Network [OSTI]

    Haslwanter, Thomas

    Straumann, and Thomas Hasl- wanter. Eye movements during multi-axis whole-body rotations. J Neurophysiol 89

  16. Core-annular flow through a horizontal pipe: Hydrodynamic counterbalancing of buoyancy force on core

    E-Print Network [OSTI]

    Vuik, Kees

    Core-annular flow through a horizontal pipe: Hydrodynamic counterbalancing of buoyancy force of a high-viscosity liquid core surrounded by a low-viscosity liquid annular layer through a horizontal pipe through a horizontal pipe. Since the densities of the two liq- uids are almost always different, gravity

  17. TECHNICAL BASIS FOR THE NUCLEAR CRITICALITY REPRESENTATIVE ACCIDENT & ASSOCIATED REPRESENTED HAZARDOUS CONDITIONS

    SciTech Connect (OSTI)

    GOETZ, T.G.

    2003-06-17T23:59:59.000Z

    This document was developed to support the documented safety analysis (DSA) and describes the process and basis for assigning risk bins for the nuclear criticality representative accident and associated hazardous conditions. Revision 1 incorporates ORP IRT comments to enhance the technical presentation and also makes editorial changes. This technical basis document was developed to support the documented safety analysis (DSA), and describes the risk binning process and the technical basis for assigning risk bins for the nuclear criticality representative accident and associated hazardous conditions. The purpose of the risk binning process is to determine the need for safety-significant structures, systems, and components (SSC) and technical safety requirement (TSR)-level controls for a given representative accident or represented hazardous condition based on an evaluation of the frequency and consequence.

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

    E-Print Network [OSTI]

    Alonso, Juan J.

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

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

    E-Print Network [OSTI]

    Peraire, Jaime

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

  20. Flux Distribution of a Single-Axis Tracking Parabolic Trough Array with Photovoltaic Receiver

    E-Print Network [OSTI]

    . With single-axis tracking the incident solar rays are not in general perpendicular to the trough. NonFlux Distribution of a Single-Axis Tracking Parabolic Trough Array with Photovoltaic Receiver G 0200 Australia E-mail: gregory.burgess@anu.edu.au Abstract Single-axis tracking parabolic troughs

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

    E-Print Network [OSTI]

    Victoria, University of

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

  2. Medial-Axis Biased Rapidly-Exploring Random Trees 

    E-Print Network [OSTI]

    Greco, Evan

    2012-05-09T23:59:59.000Z

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

  3. Off-Axis Parabola Inserter - Laboratory for Laser Energetics

    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 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Astrophysics One ofSpeeding access toSpeedingInnovationAxis

  4. Z-Axis Tipper Electromagnetics | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells, Wisconsin: EnergyWyandanch, NewYanceyYokayoYorktownYukon,Colorado:Z-Axis

  5. Representing the vacuum polarization on de Sitter

    SciTech Connect (OSTI)

    Leonard, Katie E.; Woodard, Richard P. [Department of Physics, University of Florida, Gainesville, Florida 32611 (United States)] [Department of Physics, University of Florida, Gainesville, Florida 32611 (United States); Prokopec, Tomislav [Institute of Theoretical Physics (ITP) and Spinoza Institute, Utrecht University, Postbus 80195, 3508 TD Utrecht (Netherlands)] [Institute of Theoretical Physics (ITP) and Spinoza Institute, Utrecht University, Postbus 80195, 3508 TD Utrecht (Netherlands)

    2013-03-15T23:59:59.000Z

    Previous studies of the vacuum polarization on de Sitter have demonstrated that there is a simple, noncovariant representation of it in which the physics is transparent. There is also a cumbersome, covariant representation in which the physics is obscure. Despite being unwieldy, the latter form has a powerful appeal for those who are concerned about de Sitter invariance. We show that nothing is lost by employing the simple, noncovariant representation because there is a closed form procedure for converting its structure functions to those of the covariant representation. We also present a vastly improved technique for reading off the noncovariant structure functions from the primitive diagrams. And we discuss the issue of representing the vacuum polarization for a general metric background.

  6. Development of an analytical solution for thermal single-well injection-withdrawal tests in horizontally fractured reservoirs

    E-Print Network [OSTI]

    Jung, Y.

    2014-01-01T23:59:59.000Z

    Transfer Area in Fractured Reservoirs, paper presented attests in horizontally fractured reservoirs Yoojin Jung Earthtests in horizontally fractured reservoirs where fluid flow

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

    E-Print Network [OSTI]

    Tullis, Stephen

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

  8. Technical basis for the nuclear criticality representative accident and associated represented hazardous conditions

    SciTech Connect (OSTI)

    CARSON, D.M.

    2003-03-20T23:59:59.000Z

    This technical basis document was developed to support the Tank Farms Documented Safety Analysis (DSA), and describes the risk binning process and the technical basis for assigning risk bins for the nuclear criticality representative accident and associated hazardous conditions. The purpose of the risk binning process is to determine the need for safety-significant structures, systems, and components (SSC) and technical safety requirement (TSR)-level controls for a given representative accident or represented hazardous condition based on an evaluation of the frequency and consequence. Note that the risk binning process is not applied to facility workers, because all facility worker hazardous conditions are considered for safety-significant SSCs and/or TSR-level controls. Determination of the need for safety-class SSCs was performed in accordance with DOE-STD-3009-94, ''Preparation Guide for US Department of Energy Nonreactor Nuclear Facility Documented Safety Analyses'', as described in this report.

  9. Greening the U.S. House of Representatives

    E-Print Network [OSTI]

    Diamond,, Rick

    2008-01-01T23:59:59.000Z

    Officer, U.S. House of Representatives, June 21, 2007. Finalof the U.S. House of Representatives, and the Federal EnergyGreening the U.S. House of Representatives Rick Diamond and

  10. Integrated services help drill horizontal well ahead of schedule

    SciTech Connect (OSTI)

    Rizk, G. (Baker Hughes Inteq, Houston, TX (United States)); Clough, M. (Baker Hughes Inteq, Aberdeen (United Kingdom))

    1994-03-14T23:59:59.000Z

    Integrated services and incentive contracts helped deliver an onshore horizontal gas well ahead of schedule. Elf Petroland BV's Harlingen 8 well in Holland was drilled and completed in 26 days, instead of the 33 days planned. Incentive bonuses were awarded, and the gas well began production early. Elf Petroland used one supplier to coordinate service operations and make rig site operations more efficient. The streamlined organization on site improved communication and simplified administration and logistics. Rig site problems were addressed quickly, and solutions implemented effectively because of the integrated-services structure. The paper discusses the organizational plan and how it was carried out.

  11. Horizontal Pretreatment Reactor System (Poster), NREL (National Renewable Energy Laboratory)

    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 School football Highdefault Sign InData inmaxHorizontal Plate

  12. Reference Buildings by Climate Zone and Representative City:...

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

    Reference Buildings by Climate Zone and Representative City: 4B Albuquerque, New Mexico Reference Buildings by Climate Zone and Representative City: 4B Albuquerque, New...

  13. Reference Buildings by Climate Zone and Representative City:...

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

    More Documents & Publications Reference Buildings by Climate Zone and Representative City: 5B Boulder, Colorado Reference Buildings by Climate Zone and Representative...

  14. Reference Buildings by Climate Zone and Representative City:...

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

    More Documents & Publications Reference Buildings by Climate Zone and Representative City: 4C Seattle, Washington Reference Buildings by Climate Zone and Representative...

  15. Reference Buildings by Climate Zone and Representative City:...

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

    More Documents & Publications Reference Buildings by Climate Zone and Representative City: 6B Helena, Montana Reference Buildings by Climate Zone and Representative...

  16. Reference Buildings by Climate Zone and Representative City:...

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

    More Documents & Publications Reference Buildings by Climate Zone and Representative City: 8 Fairbanks, Alaska Reference Buildings by Climate Zone and Representative...

  17. Reference Buildings by Climate Zone and Representative City:...

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

    More Documents & Publications Reference Buildings by Climate Zone and Representative City: 5A Chicago, Illinois Reference Buildings by Climate Zone and Representative...

  18. Reference Buildings by Climate Zone and Representative City:...

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

    More Documents & Publications Reference Buildings by Climate Zone and Representative City: 3B Las Vegas, Nevada Reference Buildings by Climate Zone and Representative...

  19. Reference Buildings by Climate Zone and Representative City:...

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

    More Documents & Publications Reference Buildings by Climate Zone and Representative City: 4A Baltimore, Maryland Reference Buildings by Climate Zone and Representative...

  20. 3Q CY2005 (PDF), Facility Representative Program Performance...

    Office of Environmental Management (EM)

    3Q CY2005 (PDF), Facility Representative Program Performance Indicators Quarterly Report 3Q CY2005 (PDF), Facility Representative Program Performance Indicators Quarterly Report...

  1. 3Q CY2007 (PDF), Facility Representative Program Performance...

    Office of Environmental Management (EM)

    7 (PDF), Facility Representative Program Performance Indicators Quarterly Report 3Q CY2007 (PDF), Facility Representative Program Performance Indicators Quarterly Report Attached...

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

    E-Print Network [OSTI]

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

    2012-01-01T23:59:59.000Z

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

  3. Nonlinear characterization of a single-axis acoustic levitator

    SciTech Connect (OSTI)

    Andrade, Marco A. B. [Institute of Physics, University of São Paulo, São Paulo (Brazil)] [Institute of Physics, University of São Paulo, São Paulo (Brazil); Ramos, Tiago S.; Okina, Fábio T. A.; Adamowski, Julio C. [Department of Mechatronics and Mechanical Systems Engineering, Escola Politécnica, University of São Paulo, São Paulo (Brazil)] [Department of Mechatronics and Mechanical Systems Engineering, Escola Politécnica, University of São Paulo, São Paulo (Brazil)

    2014-04-15T23:59:59.000Z

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

  4. Dual-axis resonance testing of wind turbine blades

    DOE Patents [OSTI]

    Hughes, Scott; Musial, Walter; White, Darris

    2014-01-07T23:59:59.000Z

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

  5. Horizontal well drill-in fluid utilizing alcohol ethoxylate

    SciTech Connect (OSTI)

    Jachnik, R.P.; Green, P.

    1995-11-01T23:59:59.000Z

    The drilling of horizontal wells in the last 6 years has significantly improved the economics of oil and gas production from depleted reservoirs or tight sands. This paper illustrates the application of an alcohol ethoxylate into a drill-in fluid designed to minimize formation damage in low permeability sandstones while drilling horizontal sections as long as 1,617 meters (5,306 ft) at depths approaching 6,580 meters (21,600 ft) and to facilitate formation cleanup. The chemistry of alcohol ethoxylates/alkoxylates are described and the more popular names used within the industry will be discussed. Laboratory results are presented which illustrate colloidal phenomena not previously reported with these systems, the routes taken for successful application into a drill-in fluid and how complex these particular colloidal systems are from a physical chemical viewpoint, along with the inevitable learning curve required to fully optimize these systems. Generalized case histories from the UK Southern North Sea will be described, along with field observations which back up the colloidal phenomena seen in the laboratory.

  6. Natural convection heat transfer from two horizontal cylinders

    SciTech Connect (OSTI)

    Reymond, Olivier; Murray, Darina B. [Department of Mechanical and Manufacturing Engineering, Trinity College Dublin (Ireland); O'Donovan, Tadhg S. [School of Engineering and Physical Sciences, Heriot-Watt University, Nasmyth Building, Edinburgh EH14 4AS (United Kingdom)

    2008-09-15T23:59:59.000Z

    Natural convection heat transfer from a single horizontal cylinder and a pair of vertically aligned horizontal cylinders is investigated. Surface heat transfer distributions around the circumference of the cylinders are presented for Rayleigh numbers of 2 x 10{sup 6}, 4 x 10{sup 6} and 6 x 10{sup 6} and a range of cylinder spacings of 1.5, 2 and 3 diameters. With a cylinder pairing the lower cylinder is unaffected by the presence of the second cylinder; the same is true of the upper cylinder if the lower one is not heated. However, when both cylinders are heated it has been found that a plume rising from the heated lower cylinder interacts with the upper cylinder and significantly affects the surface heat transfer distribution. Spectral analysis of surface heat transfer signals has established the influence of the plume oscillations on the heat transfer. Thus, when the plume from the lower cylinder oscillates out of phase with the flow around the upper cylinder it increases the mixing and results in enhanced heat transfer. (author)

  7. Crosswell Imaging Technology & Advanced DSR Navigation for Horizontal Directional Drilling

    SciTech Connect (OSTI)

    Larry Stolarczyk

    2008-08-08T23:59:59.000Z

    The objective of Phase II is to develop and demonstrate real-time measurement-while-drilling (MWD) for guidance and navigation of drill strings during horizontal drilling operations applicable to both short and long holes. The end product of Phase II is a functional drill-string assembly outfitted with a commercial version of Drill String Radar (DSR). Project Objectives Develop and demonstrate a dual-phase methodology of in-seam drilling, imaging, and structure confirmation. This methodology, illustrated in Figure 1, includes: (1) Using RIM to image between drill holes for seam thickness estimates and in-seam structures detection. Completed, February 2005; and (2) Using DSR for real-time MWD guidance and navigation of drillstrings during horizontal drilling operations. Completed, November 2008. As of November 2008, the Phase II portion of Contract DE-FC26-04NT42085 is about 99% complete, including milestones and tasks original outlined as Phase II work. The one percent deficiency results from MSHA-related approvals which have yet to be granted (at the time of reporting). These approvals are pending and are do not negatively impact the scope of work or project objectives.

  8. Representative Atmospheric Plume Development for Elevated Releases

    SciTech Connect (OSTI)

    Eslinger, Paul W.; Lowrey, Justin D.; McIntyre, Justin I.; Miley, Harry S.; Prichard, Andrew W.

    2014-03-03T23:59:59.000Z

    An atmospheric explosion of a low-yield nuclear device will produce a large number of radioactive isotopes, some of which can be measured with airborne detection systems. However, properly equipped aircraft may not arrive in the region where an explosion occurred for a number of hours after the event. Atmospheric conditions will have caused the radioactive plume to move and diffuse before the aircraft arrives. The science behind predicting atmospheric plume movement has advanced enough that the location of the maximum concentrations in the plume can be determined reasonably accurately in real time, or near real time. Given the assumption that an aircraft can follow a plume, this study addresses the amount of atmospheric dilution expected to occur in a representative plume as a function of time past the release event. The approach models atmospheric transport of hypothetical releases from a single location for every day in a year using the publically available HYSPLIT code. The effective dilution factors for the point of maximum concentration in an elevated plume based on a release of a non-decaying, non-depositing tracer can vary by orders of magnitude depending on the day of the release, even for the same number of hours after the release event. However, the median of the dilution factors based on releases for 365 consecutive days at one site follows a power law relationship in time, as shown in Figure S-1. The relationship is good enough to provide a general rule of thumb for estimating typical future dilution factors in a plume starting at the same point. However, the coefficients of the power law function may vary for different release point locations. Radioactive decay causes the effective dilution factors to decrease more quickly with the time past the release event than the dilution factors based on a non-decaying tracer. An analytical expression for the dilution factors of isotopes with different half-lives can be developed given the power law expression for the non-decaying tracer. If the power-law equation for the median dilution factor, Df, based on a non-decaying tracer has the general form Df=a?×t?^(-b) for time t after the release event, then the equation has the form Df=e^(-?t)×a×t^(-b) for a radioactive isotope, where ? is the decay constant for the isotope.

  9. A Horizontal Well Program for the Upper Miocene 26R Pool, Elk Hills Field, California

    SciTech Connect (OSTI)

    Reid, S.A. (Bechtel Petroleum Operations, Inc., Tupman, CA (United States)); Kuespert, J.G. (Chevron U.S.A. Inc., Tupman, CA (United States)); McJannet, G.S. (USDOE, Tupman, CA (United States))

    1992-01-01T23:59:59.000Z

    The goals of this paper are to (1) summarize the complex geologic and reservoir characteristics of the 26R Pool, (2) note those characteristics and criteria that would make this Pool ideally suited for horizontal well technology, (3) discuss the evolution of horizontal drilling technology and our corresponding development of knowledge about the 26R Pool, and (4) discuss how our objectives have been achieved by utilizing horizontal wells. (VC)

  10. A Horizontal Well Program for the Upper Miocene 26R Pool, Elk Hills Field, California

    SciTech Connect (OSTI)

    Reid, S.A. [Bechtel Petroleum Operations, Inc., Tupman, CA (United States); Kuespert, J.G. [Chevron U.S.A. Inc., Tupman, CA (United States); McJannet, G.S. [USDOE, Tupman, CA (United States)

    1992-07-01T23:59:59.000Z

    The goals of this paper are to (1) summarize the complex geologic and reservoir characteristics of the 26R Pool, (2) note those characteristics and criteria that would make this Pool ideally suited for horizontal well technology, (3) discuss the evolution of horizontal drilling technology and our corresponding development of knowledge about the 26R Pool, and (4) discuss how our objectives have been achieved by utilizing horizontal wells. (VC)

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

    E-Print Network [OSTI]

    Levin, Judith G.

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

  12. High-frequency shear-horizontal surface acoustic wave sensor

    DOE Patents [OSTI]

    Branch, Darren W

    2013-05-07T23:59:59.000Z

    A Love wave sensor uses a single-phase unidirectional interdigital transducer (IDT) on a piezoelectric substrate for leaky surface acoustic wave generation. The IDT design minimizes propagation losses, bulk wave interferences, provides a highly linear phase response, and eliminates the need for impedance matching. As an example, a high frequency (.about.300-400 MHz) surface acoustic wave (SAW) transducer enables efficient excitation of shear-horizontal waves on 36.degree. Y-cut lithium tantalate (LTO) giving a highly linear phase response (2.8.degree. P-P). The sensor has the ability to detect at the pg/mm.sup.2 level and can perform multi-analyte detection in real-time. The sensor can be used for rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms.

  13. High-frequency shear-horizontal surface acoustic wave sensor

    DOE Patents [OSTI]

    Branch, Darren W

    2014-03-11T23:59:59.000Z

    A Love wave sensor uses a single-phase unidirectional interdigital transducer (IDT) on a piezoelectric substrate for leaky surface acoustic wave generation. The IDT design minimizes propagation losses, bulk wave interferences, provides a highly linear phase response, and eliminates the need for impedance matching. As an example, a high frequency (.about.300-400 MHz) surface acoustic wave (SAW) transducer enables efficient excitation of shear-horizontal waves on 36.degree. Y-cut lithium tantalate (LTO) giving a highly linear phase response (2.8.degree. P-P). The sensor has the ability to detect at the pg/mm.sup.2 level and can perform multi-analyte detection in real-time. The sensor can be used for rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms.

  14. 3-D laser patterning process utilizing horizontal and vertical patterning

    DOE Patents [OSTI]

    Malba, Vincent (Livermore, CA); Bernhardt, Anthony F. (Berkeley, CA)

    2000-01-01T23:59:59.000Z

    A process which vastly improves the 3-D patterning capability of laser pantography (computer controlled laser direct-write patterning). The process uses commercially available electrodeposited photoresist (EDPR) to pattern 3-D surfaces. The EDPR covers the surface of a metal layer conformally, coating the vertical as well as horizontal surfaces. A laser pantograph then patterns the EDPR, which is subsequently developed in a standard, commercially available developer, leaving patterned trench areas in the EDPR. The metal layer thereunder is now exposed in the trench areas and masked in others, and thereafter can be etched to form the desired pattern (subtractive process), or can be plated with metal (additive process), followed by a resist stripping, and removal of the remaining field metal (additive process). This improved laser pantograph process is simpler, faster, move manufacturable, and requires no micro-machining.

  15. New bits, motors improve economics of slim hole horizontal wells

    SciTech Connect (OSTI)

    McDonald, S. [Hughes Christensen Co., New Orleans, LA (United States); Felderhoff, F. [Hughes Christensen Co., Midland, TX (United States); Fisher, K. [Baker Hughes Inteq, New Orleans, LA (United States)

    1996-03-11T23:59:59.000Z

    The latest generation of small-diameter bits, combined with a new extended power section positive displacement motor (PDM), has improved the economics of slim hole drilling programs. As costs are driven down, redevelopment reserves are generated in the older, more established fields. New reserves result from increases in the ultimate recovery and accelerated production rates from the implementation of horizontal wells in reentry programs. This logic stimulated an entire development program for a Gulf of Mexico platform, which was performed without significant compromises in well bore geometry. The savings from this new-generation drilling system come from reducing the total number of trips required during the drilling phase. This paper reviews the design improvements of roller cone bits, PDC bits, and positive displacement motors for offshore directional drilling operations.

  16. Horizontal oil well applications and oil recovery assessment. Technical progress report, April--June 1994

    SciTech Connect (OSTI)

    McDonald, W.J.

    1993-06-03T23:59:59.000Z

    Thousands of horizontal wells are being drilled each year in the U.S.A. and around the world. Horizontal wells have increased oil and gas production rates 3 to 8 times those of vertical wells in many areas and have converted non-economic oil reserves to economic reserves. However, the use of horizontal technology in various formation types and applications has not always yielded anticipated success. The primary objective of this project is to examine factors affecting technical and economic success of horizontal well applications. The project`s goals will be accomplished through six tasks designed to evaluate the technical and economic success of horizontal drilling, highlight current limitations, and outline technical needs to overcome these limitations. Data describing operators` experiences throughout the domestic oil and gas industry will be gathered and organized. Canadian horizontal technology will also be documented with an emphasis on lessons the US industry can learn from Canada`s experience. MEI databases containing detailed horizontal case histories will also be used. All these data will be categorized and analyzed to assess the status of horizontal well technology and estimate the impact of horizontal wells on present and future domestic oil recovery and reserves.

  17. AGS tune jump system to cross horizontal depolarization resonances overview

    SciTech Connect (OSTI)

    Glenn, J.W.; Ahrens, L.; Fu, W.; Mi, J.L.; Rosas, P.; Schoefer, V.; Theisen, C.; Altinbas, Z.

    2011-03-28T23:59:59.000Z

    Two partial snakes overcome the vertical depolarizing resonances in the AGS. But a new type of depolarizing intrinsic resonance from horizontal motion appeared. We reduce these using horizontal tune jumps timed to these resonances. We gain a factor of six in crossing rate with a tune jump of 0.05 in 100 {micro}s. Two quadrapoles, we described in 2009, pulse 42 times, the current matching beam energy. The power supplies for these quads are described in detail elsewhere in this conference. The controls for the Jump Quad system is based on a BNL designed Quad Function Generator. Two modules are used; one for timing, and one to supply reference voltages. Synchronization is provided by a proprietary serial bus, the Event Link. The AgsTuneJump application predicts the times of the resonances during the AGS cycle and calculates the power supply trigger times from externally collected tune and energy versus time data and the Low and High PS voltage functions from a voltage to current model of the power supply. The system was commissioned during runs 09 & 10 and is operational. Many beam effects are described elsewhere. The TuneJump system has worked well and has caused little trouble save for the perturbations in the lattice having such a large effect due to our need to run with the vertical tune within a few thousandths of the integer tune. As these problems were mostly sorted out by correcting the 6th harmonic orbit distortions which caused a large 18 theta beta wave. Also running with minimal chromaticity reduces emittance growth. There are still small beta waves which are being addressed. The timing of the pulses is still being investigated, but as each crossing causes minimal polarization loss, this is a lengthy process.

  18. Control system for a vertical-axis windmill

    DOE Patents [OSTI]

    Brulle, R.V.

    1981-09-03T23:59:59.000Z

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

  19. Off-axis electron holography of ferromagnetic multilayer nanowires

    SciTech Connect (OSTI)

    Akhtari-Zavareh, Azadeh; Kavanagh, K. L. [Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A1S6 (Canada); Carignan, L. P. [Apollo Microwaves, 1650 Trans-Canada Highway, Dorval, Quebec H9P 1H7 (Canada); Department of Engineering Physics, École Polytechnique de Montréal, Montréal, Quebec, H3C 3A7 Canada (Canada); Department of Electrical Engineering, École Polytechnique de Montréal, Montréal, Quebec, H3C 3A7 Canada (Canada); Yelon, A.; Ménard, D. [Department of Engineering Physics, École Polytechnique de Montréal, Montréal, Quebec, H3C 3A7 Canada (Canada); Kasama, T. [Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kongens Lyngby (Denmark); Herring, R. [Department of Mechanical Engineering, University of Victoria, Victoria, British Columbia V8W 3P6 (Canada); Dunin-Borkowski, R. E. [Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Institute for Microstructure Research, D-52425 Jülich (Germany); McCartney, M. R. [Department of Physics, Arizona State University, Tempe, Arizona 85287-1504 (United States)

    2014-07-14T23:59:59.000Z

    We have used electron holography to investigate the local magnetic behavior of isolated ferromagnetic nanowires (NWs) in their remanent states. The NWs consisted of periodic magnetic layers of soft, high-saturation magnetization CoFeB alloys, and non-magnetic layers of Cu. All NWs were fabricated by pulsed-potential electrodeposition in nanoporous alumina membranes. The NW composition and layer thicknesses were measured using scanning transmission electron microscopy and energy dispersive spectroscopy. The magnetization of individual NWs depended upon the thicknesses of the layers and the direction of an external magnetic field, which had been applied in situ. When the CoFeB was thicker than the diameter (50?nm), magnetization was axial for all external field directions, while thinner layers could be randomized via a perpendicular field. In some cases, magnetization inside the wire was detected at an angle with respect to the axis of the wires. In thinner Cu/CoFeB (<10?nm each) multilayer, magnetic field vortices were detected, associated with opposing magnetization in neighbouring layers. The measured crystallinity, compositions, and layer thicknesses of individual NWs were found to be significantly different from those predicted from calibration growths based on uniform composition NWs. In particular, a significant fraction of Cu (up to 50 at.?%) was present in the CoFeB layers such that the measured magnetic induction was lower than expected. These results will be used to better understand previously measured effective anisotropy fields of similar NW arrays.

  20. What does motor efference copy represent? evidence from speech production

    E-Print Network [OSTI]

    Niziolek, CA; Nagarajan, SS; Houde, JF

    2013-01-01T23:59:59.000Z

    What does motor efference copy represent? Evidence fromAbbreviated title: What does motor efference copy represent?SJ, Wang X (2003) Sensory-Motor Interaction in the Primate

  1. Visualizing Scalar Fields Represented by Adaptive Square Triangulations

    E-Print Network [OSTI]

    [Sabella 88], ab­ sorption and reflection [Max 95] providing a means of representing the field by a colored

  2. Dynamic behavior analysis for a six axis industrial machining BISU Claudiu1,a

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .). In the aerospace industry, robot starts to be used for complex applications such as drilling, riveting, fiberDynamic behavior analysis for a six axis industrial machining robot BISU Claudiu1,a , CHERIF Mehdi2-yves.knevez@u-bordeaux1.fr Abstract The six axis robots are widely used in automotive industry for their good

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

    E-Print Network [OSTI]

    Tullis, Stephen

    Vibration Analysis of a Vertical Axis Wind Turbine Blade K. Mc Laren 1 , S.Tullis 2 and S.Ziada 3 1 vibration source of a small-scale vertical axis wind turbine currently undergoing field-testing. The turbine at a blade-tip speed ratio (the ratio of the blade rotational velocity to the ambient wind velocity) of 1

  4. Model for the prediction of 3D surface topography in 5-axis milling

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Model for the prediction of 3D surface topography in 5-axis milling Sylvain Lavernhe LURPA - ENS surface topography obtained in 5-axis milling in function of the machining conditions. For this purpose to a feed rate prediction model. Thanks to the simulation model of 3D surface topography, the influence

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

    E-Print Network [OSTI]

    Laughlin, David E.

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

  6. Weak-Axis Behavior of Wide Flange Columns Subjected to Blast

    E-Print Network [OSTI]

    Bruneau, Michel

    the effect of blast loading on wide flange columns loaded perpendicular to the weak axis of bending field detonations. Furthermore, past studies investigating the effect of blast load- ing on wide flangeWeak-Axis Behavior of Wide Flange Columns Subjected to Blast Nagarjun Krishnappa1 ; Michel Bruneau

  7. Hydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    properties investigated using off-axis electron holography and more conventional rock magnetism techniqueHydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles measurements. 1. Introduction The ability of a rock to reliably record the geomagnetic field depends

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

    E-Print Network [OSTI]

    Tullis, Stephen

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

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

    E-Print Network [OSTI]

    Tullis, Stephen

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

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

    E-Print Network [OSTI]

    Tullis, Stephen

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

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

    E-Print Network [OSTI]

    Tullis, Stephen

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

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

    E-Print Network [OSTI]

    Leu, Tzong-Shyng "Jeremy"

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

  13. Hydraulics of horizontal wells in fractured shallow aquifer systems Eungyu Parka,*, Hongbin Zhanb

    E-Print Network [OSTI]

    Zhan, Hongbin

    Hydraulics of horizontal wells in fractured shallow aquifer systems Eungyu Parka,*, Hongbin Zhanb Accepted 1 May 2003 Abstract An analysis of groundwater hydraulic head in the vicinity of a horizontal well in fractured or porous aquifers considering confined, leaky confined, and water-table aquifer boundary

  14. Thermal-hydraulic assessment of concrete storage cubicle with horizontal 3013 canisters

    SciTech Connect (OSTI)

    HEARD, F.J.

    1999-04-08T23:59:59.000Z

    The FIDAP computer code was used to perform a series of analyses to assess the thermal-hydraulic performance characteristics of the concrete plutonium storage cubicles, as modified for the horizontal placement of 3013 canisters. Four separate models were developed ranging from a full height model of the storage cubicle to a very detailed standalone model of a horizontal 3013 canister.

  15. Effects of hydrophilic surface treatment on evaporation heat transfer at the outside wall of horizontal tubes

    E-Print Network [OSTI]

    Kim, Ho-Young

    of horizontal tubes H.-Y. Kim a , B.H. Kang b,* a Thermal/Flow Control Research Center, Korea Institute hydrophilic treatment induces film flow on the tubes while sessile drops are formed on untreated tubes liquid film on horizontal low-finned tubes is 60­100% more efficient than that on plain tubes. When

  16. Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal Thermography

    E-Print Network [OSTI]

    Ghajar, Afshin J.

    62 TC02-007 Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal thermography (LCT) method was developed for surface temperature measurements on a horizontal 2000m macro-tube and 1000m micro-tube. In the single-phase heat transfer experiments, the fully-developed flow heat transfer

  17. A practical modification of horizontal line sampling for snag and cavity tree inventory

    E-Print Network [OSTI]

    A practical modification of horizontal line sampling for snag and cavity tree inventory M.J. Ducey features in forests, but they are often sparsely distributed, making efficient inventories problematic. We present a straightforward modification of horizontal line sampling de- signed to facilitate inventory

  18. LQG control of horizontal wind turbines for blades and tower loads alleviation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LQG control of horizontal wind turbines for blades and tower loads alleviation A. Pintea*, N of power produced by two bladed horizontal variable speed wind turbines. The proposed controller ensures not only an optimal operation of turbines but also enables a compromise with the minimization of the blade

  19. THE CONTRIBUTION OF HORIZONTAL SEA-BED DISPLACEMENTS INTO TSUNAMI GENERATION PROCESSES

    E-Print Network [OSTI]

    THE CONTRIBUTION OF HORIZONTAL SEA-BED DISPLACEMENTS INTO TSUNAMI GENERATION PROCESSES DENYS DUTYKH of tsunamis is the deformation of the bot- tom of the ocean caused by an underwater earthquake. Usually, only to the evolution of kinetic and potential en- ergies of the resulting wave while the contribution of horizontal

  20. Groundwater flow to a horizontal or slanted well in an unconfined aquifer

    E-Print Network [OSTI]

    Zhan, Hongbin

    groundwater, vapor, or oil improves the effective recovery of fluids. In a case study in a thin oil reservoir with the horizontal aquifer units; (4) drilling oper- ations are feasible near the ground surfaces that are obstructed equal to that of 10 vertical wells. In the petroleum industry, horizontal wells improve oil recovery

  1. The horizontal dam break problem for slow non-Newtonian power-law fluids

    E-Print Network [OSTI]

    The horizontal dam break problem for slow non-Newtonian power-law fluids P. Saramito a C. Smutek bLaboratoire g´eosciences ­ IPGP et universit´e de La R´eunion, France Abstract ­ The dam break problem shallow for the horizontal dam break problem. Keywords ­ viscoplastic fluid; dam break problem; shallow flows. 1

  2. Impact of horizontal groundwater flow and localized deforestation on the development of shallow

    E-Print Network [OSTI]

    Bense, Victor

    Impact of horizontal groundwater flow and localized deforestation on the development of shallow that develop in the shallow subsurface as a result of localized deforestation in combination with shallow horizontal groundwater flow. Model results show how a patch-wise pattern of deforestation at the surface

  3. Horizontal oil well applications and oil recovery assessment. Technical progress report, July--September 1993

    SciTech Connect (OSTI)

    McDonald, W.J.

    1993-12-01T23:59:59.000Z

    The primary objective of this project is to examine factors affecting technical and economic success of horizontal well applications. The project`s goals will be accomplished through five tasks designed to evaluate the technical and economic success of horizontal drilling, ascertain its limitations, and outline technical needs to overcome these limitations. Data describing operators` experiences throughout the domestic oil and gas industry will be gathered and organized. MEI databases containing detailed horizontal case histories will also be used. All these data will be categorized and analyzed to assess the status of horizontal well technology and determine the impact of horizontal wells on present and future domestic oil recovery and reserves. A spreadsheet data file was constructed from well data describing 3885 domestic horizontal wells, the total as of the summer of 1993. Most domestic effort in horizontal drilling has been focused on fractured carbonate formations. Three principal formations are the focus of this activity: The Austin Chalk in Texas, the Bakken Shale in North Dakota, and the Niobrara in Colorado and Wyoming. Results from this formation type are well known and a large volume of published results is available. Given the scope of the present study, it was decided to limit the analyses to formations other than these three fractured carbonates. Based on domestic well data, 431 horizontal wells have been completed in other formations. These wells were highlighted for detailed study.

  4. Horizontal subduction and truncation of the Cocos Plate beneath central Mexico

    E-Print Network [OSTI]

    Clayton, Robert W.

    Horizontal subduction and truncation of the Cocos Plate beneath central Mexico Xyoli Pe from a trans-Mexico temporary broadband seismic network centered on Mexico City, we report that the subducting Cocos Plate beneath central Mexico is horizontal, and tectonically underplates the base

  5. Zero Discharge Water Management for Horizontal Shale Gas Well Development

    SciTech Connect (OSTI)

    Paul Ziemkiewicz; Jennifer Hause; Raymond Lovett; David Locke Harry Johnson; Doug Patchen

    2012-03-31T23:59:59.000Z

    Hydraulic fracturing technology (fracking), coupled with horizontal drilling, has facilitated exploitation of huge natural gas (gas) reserves in the Devonian-age Marcellus Shale Formation (Marcellus) of the Appalachian Basin. The most-efficient technique for stimulating Marcellus gas production involves hydraulic fracturing (injection of a water-based fluid and sand mixture) along a horizontal well bore to create a series of hydraulic fractures in the Marcellus. The hydraulic fractures free the shale-trapped gas, allowing it to flow to the well bore where it is conveyed to pipelines for transport and distribution. The hydraulic fracturing process has two significant effects on the local environment. First, water withdrawals from local sources compete with the water requirements of ecosystems, domestic and recreational users, and/or agricultural and industrial uses. Second, when the injection phase is over, 10 to 30% of the injected water returns to the surface. This water consists of flowback, which occurs between the completion of fracturing and gas production, and produced water, which occurs during gas production. Collectively referred to as returned frac water (RFW), it is highly saline with varying amounts of organic contamination. It can be disposed of, either by injection into an approved underground injection well, or treated to remove contaminants so that the water meets the requirements of either surface release or recycle use. Depending on the characteristics of the RFW and the availability of satisfactory disposal alternatives, disposal can impose serious costs to the operator. In any case, large quantities of water must be transported to and from well locations, contributing to wear and tear on local roadways that were not designed to handle the heavy loads and increased traffic. The search for a way to mitigate the situation and improve the overall efficiency of shale gas production suggested a treatment method that would allow RFW to be used as make-up water for successive fracs. RFW, however, contains dissolved salts, suspended sediment and oils that may interfere with fracking fluids and/or clog fractures. This would lead to impaired well productivity. The major technical constraints to recycling RFW involves: identification of its composition, determination of industry standards for make-up water, and development of techniques to treat RFW to acceptable levels. If large scale RFW recycling becomes feasible, the industry will realize lower transportation and disposal costs, environmental conflicts, and risks of interruption in well development schedules.

  6. Field Demonstration of Horizontal Infill Drilling Using Cost-effective Integrated Reservoir Modeling--Mississippian Carbonates, Central Kansas

    SciTech Connect (OSTI)

    Saibal Bhattacharya

    2005-08-31T23:59:59.000Z

    Mississippian carbonate reservoirs have produced in excess of 1 billion barrels of oil in Kansas accounting for over 16% of the state's production. With declining production from other age reservoirs, the contribution of Mississippian reservoirs to Kansas's oil production has risen to 43% as of 2004. However, solution-enhanced features such as vertical shale intervals extending from the karst erosional surface at the top introduce complexities/compartmentalizations in Mississippian carbonate reservoirs. Coupled with this, strong water drives charge many of these reservoirs resulting in limited drainage from vertical wells due to high water cuts after an initial period of low water production. Moreover, most of these fields are operated by small independent operators without access to the knowledge bank of modern research in field characterization and exploitation/development practices. Thus, despite increasing importance of Mississippian fields to Kansas production, these fields are beset with low recovery factors and high abandonment rates leaving significant resources in the ground. Worldwide, horizontal infill wells have been successful in draining compartmentalized reservoirs with limited pressure depletion. The intent of this project was to demonstrate the application of horizontal wells to successfully exploit the remaining potential in mature Mississippian fields of the mid-continent. However, it is of critical importance that for horizontal wells to be economically successful, they must be selectively targeted. This project demonstrated the application of initial and secondary screening methods, based on publicly available data, to quickly shortlist fields in a target area for detailed studies to evaluate their potential to infill horizontal well applications. Advanced decline curve analyses were used to estimate missing well-level production data and to verify if the well produced under unchanging bottom-hole conditions--two commonly occurring data constraints afflicting mature Mississippian fields. A publicly accessible databank of representative petrophysical properties and relationships was developed to overcome the paucity of such data that is critical to modeling the storage and flow in these reservoirs. Studies in 3 Mississippian fields demonstrated that traditional reservoir models built by integrating log, core, DST, and production data from existing wells on 40-acre spacings are unable to delineate karst-induced compartments, thus making 3D-seismic data critical to characterize these fields. Special attribute analyses on 3D data were shown to delineate reservoir compartments and predict those with pay porosities. Further testing of these techniques is required to validate their applicability in other Mississippian reservoirs. This study shows that detailed reservoir characterization and simulation on geomodels developed by integrating wireline log, core, petrophysical, production and pressure, and 3D-seismic data enables better evaluation of a candidate field for horizontal infill applications. In addition to reservoir compartmentalization, two factors were found to control the economic viability of a horizontal infill well in a mature Mississippian field: (a) adequate reservoir pressure support, and (b) an average well spacing greater than 40-acres.

  7. Horizontal oil well applications and oil recovery assessment. Technical progress report, January--March 1994

    SciTech Connect (OSTI)

    McDonald, W.J.

    1994-06-01T23:59:59.000Z

    The primary objective of this project is to examine factors affecting technical and economic success of horizontal well applications. The project`s goals will be accomplished through five tasks designed to evaluate the technical and economic success of horizontal drilling, highlight current limitations, and outline technical needs to overcome these limitations. Data describing operators` experiences throughout the domestic oil and gas industry will be gathered and organized. MEI databases containing detailed horizontal case histories will also be used. All these data will be categorized and analyzed to assess the status of horizontal well technology and estimate the impact of horizontal wells on present and future domestic oil recovery and reserves. Accomplishments for this quarter are presented.

  8. Horizontal oil well applications and oil recovery assessment. Volume 2: Applications overview, Final report

    SciTech Connect (OSTI)

    Deskins, W.G.; McDonald, W.J.; Knoll, R.G.; Springer, S.J.

    1995-03-01T23:59:59.000Z

    Horizontal technology has been applied in over 110 formations in the USA. Volume 1 of this study addresses the overall success of horizontal technology, especially in less-publicized formations, i.e., other than the Austin Chalk, Bakken, and Niobrara. Operators in the USA and Canada were surveyed on a formation-by-formation basis by means of a questionnaire. Response data were received describing horizontal well projects in 58 formations in the USA and 88 in Canada. Operators` responses were analyzed for trends in technical and economic success based on lithology (clastics and carbonates) and resource type (light oil, heavy oil, and gas). The potential impact of horizontal technology on reserves was also estimated. A forecast of horizontal drilling activity over the next decade was developed.

  9. Atmospheric Climate Model Experiments Performed at Multiple Horizontal Resolutions

    SciTech Connect (OSTI)

    Phillips, T; Bala, G; Gleckler, P; Lobell, D; Mirin, A; Maxwell, R; Rotman, D

    2007-12-21T23:59:59.000Z

    This report documents salient features of version 3.3 of the Community Atmosphere Model (CAM3.3) and of three climate simulations in which the resolution of its latitude-longitude grid was systematically increased. For all these simulations of global atmospheric climate during the period 1980-1999, observed monthly ocean surface temperatures and sea ice extents were prescribed according to standard Atmospheric Model Intercomparison Project (AMIP) values. These CAM3.3 resolution experiments served as control runs for subsequent simulations of the climatic effects of agricultural irrigation, the focus of a Laboratory Directed Research and Development (LDRD) project. The CAM3.3 model was able to replicate basic features of the historical climate, although biases in a number of atmospheric variables were evident. Increasing horizontal resolution also generally failed to ameliorate the large-scale errors in most of the climate variables that could be compared with observations. A notable exception was the simulation of precipitation, which incrementally improved with increasing resolution, especially in regions where orography plays a central role in determining the local hydroclimate.

  10. Global horizontal irradiance clear sky models : implementation and analysis.

    SciTech Connect (OSTI)

    Stein, Joshua S.; Hansen, Clifford W.; Reno, Matthew J.

    2012-03-01T23:59:59.000Z

    Clear sky models estimate the terrestrial solar radiation under a cloudless sky as a function of the solar elevation angle, site altitude, aerosol concentration, water vapor, and various atmospheric conditions. This report provides an overview of a number of global horizontal irradiance (GHI) clear sky models from very simple to complex. Validation of clear-sky models requires comparison of model results to measured irradiance during clear-sky periods. To facilitate validation, we present a new algorithm for automatically identifying clear-sky periods in a time series of GHI measurements. We evaluate the performance of selected clear-sky models using measured data from 30 different sites, totaling about 300 site-years of data. We analyze the variation of these errors across time and location. In terms of error averaged over all locations and times, we found that complex models that correctly account for all the atmospheric parameters are slightly more accurate than other models, but, primarily at low elevations, comparable accuracy can be obtained from some simpler models. However, simpler models often exhibit errors that vary with time of day and season, whereas the errors for complex models vary less over time.

  11. Construction of an unyielding target for large horizontal impacts.

    SciTech Connect (OSTI)

    Ammerman, Douglas James; Davie, Neil Thomas; Kalan, Robert J.

    2010-10-01T23:59:59.000Z

    Sandia National Laboratories has constructed an unyielding target at the end of its 2000-foot rocket sled track. This target is made up of approximately 5 million pounds of concrete, an embedded steel load spreading structure, and a steel armor plate face that varies from 10 inches thick at the center to 4 inches thick at the left and right edges. The target/track combination will allow horizontal impacts at regulatory speeds of very large objects, such as a full-scale rail cask, or high-speed impacts of smaller packages. The load-spreading mechanism in the target is based upon the proven design that has been in use for over 20 years at Sandia's aerial cable facility. That target, with a weight of 2 million pounds, has successfully withstood impact forces of up to 25 million pounds. It is expected that the new target will be capable of withstanding impact forces of more than 70 million pounds. During construction various instrumentation was placed in the target so that the response of the target during severe impacts can be monitored. This paper will discuss the construction of the target and provide insights on the testing capabilities at the sled track with this new target.

  12. Enhanced boiling heat transfer in horizontal test bundles

    SciTech Connect (OSTI)

    Trewin, R.R.; Jensen, M.K.; Bergles, A.E.

    1994-08-01T23:59:59.000Z

    Two-phase flow boiling from bundles of horizontal tubes with smooth and enhanced surfaces has been investigated. Experiments were conducted in pure refrigerant R-113, pure R-11, and mixtures of R-11 and R-113 of approximately 25, 50, and 75% of R-113 by mass. Tests were conducted in two staggered tube bundles consisting of fifteen rows and five columns laid out in equilateral triangular arrays with pitch-to-diameter ratios of 1.17 and 1.5. The enhanced surfaces tested included a knurled surface (Wolverine`s Turbo-B) and a porous surface (Linde`s High Flux). Pool boiling tests were conducted for each surface so that reference values of the heat transfer coefficient could be obtained. Boiling heat transfer experiments in the tube bundles were conducted at pressures of 2 and 6 bar, heat flux values from 5 to 80 kW/m{sup 2}s, and qualities from 0% to 80%, Values of the heat transfer coefficients for the enhanced surfaces were significantly larger than for the smooth tubes and were comparable to the values obtained in pool boiling. It was found that the performance of the enhanced tubes could be predicted using the pool boiling results. The degradation in the smooth tube heat transfer coefficients obtained in fluid mixtures was found to depend on the difference between the molar concentration in the liquid and vapor.

  13. Non-radioactive disposal facility -- Bioremediation horizontal well installation project

    SciTech Connect (OSTI)

    Kupar, J.; Hasek, M.

    1998-03-01T23:59:59.000Z

    The Sanitary Landfill Corrective Action Plan proposes a two pronged approach to remediation. The first part of the total remediation strategy is the placement of a RCRA style closure cap to provide source control of contaminants into the groundwater. The second part of the proposed remediation package is a phased approach primarily using an in situ bioremediation system for groundwater clean up of the Constituents of Concern (COCs) that exceed their proposed Alternate Concentration Limits (ACL). The phased in approach of groundwater clean up will involve operation of the in situ bioremediation system, followed by evaluation of the Phase 1 system and, if necessary, additional phased remediation strategies. This document presents pertinent information on operations, well locations, anticipated capture zones, monitoring strategies, observation wells and other information which will allow a decision on the acceptability of the remedial strategy as an interim corrective action prior to permit application approval. The proposed interim phase of the remediation program will position two horizontal bioremediation wells such that the respective zones of influence will intersect the migration path for the highest concentrations of each plume.

  14. Horizontally scaling dChache SRM with the Terracotta platform

    SciTech Connect (OSTI)

    Perelmutov, T.; Crawford, M.; Moibenko, A.; Oleynik, G.; /Fermilab

    2011-01-01T23:59:59.000Z

    The dCache disk caching file system has been chosen by a majority of LHC experiments Tier 1 centers for their data storage needs. It is also deployed at many Tier 2 centers. The Storage Resource Manager (SRM) is a standardized grid storage interface and a single point of remote entry into dCache, and hence is a critical component. SRM must scale to increasing transaction rates and remain resilient against changing usage patterns. The initial implementation of the SRM service in dCache suffered from an inability to support clustered deployment, and its performance was limited by the hardware of a single node. Using the Terracotta platform, we added the ability to horizontally scale the dCache SRM service to run on multiple nodes in a cluster configuration, coupled with network load balancing. This gives site administrators the ability to increase the performance and reliability of SRM service to face the ever-increasing requirements of LHC data handling. In this paper we will describe the previous limitations of the architecture SRM server and how the Terracotta platform allowed us to readily convert single node service into a highly scalable clustered application.

  15. TERZAN 5: AN ALTERNATIVE INTERPRETATION FOR THE SPLIT HORIZONTAL BRANCH

    SciTech Connect (OSTI)

    D'Antona, F.; Ventura, P.; Carini, R.; Di Criscienzo, M. [INAF-Osservatorio Astronomico di Roma, via Frascati 33, I-00040 Monteporzio (Italy); Caloi, V. [INAF-IASF-Roma, via Fosso del Cavaliere 100, I-00133 Roma (Italy); D'Ercole, A. [INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna (Italy); Vesperini, E. [Department of Physics, Drexel University, Philadelphia, PA 19104 (United States)

    2010-06-01T23:59:59.000Z

    We consider the horizontal branch (HB) of the globular cluster Terzan 5, recently shown to be split into two parts, the fainter one ({delta}M{sub K} {approx} 0.3 mag) having a lower metallicity than the more luminous. Both features show that it contains at least two stellar populations. The separation in magnitude has been ascribed to an age difference of {approx}6 Gyr and interpreted as the result of an atypical evolutionary history for this cluster. We show that the observed HB morphology is also consistent with a model in which the bright HB is composed of second generation stars that are metal enriched and with a helium mass fraction larger (by {delta}Y {approx} 0.07) than that of first generation stars populating the fainter part of the HB. Terzan 5 would therefore be anomalous, compared to most 'normal' clusters hosting multiple populations, only because its second generation is strongly contaminated by supernova ejecta; the previously proposed prolonged period of star formation, however, is not required. The iron enrichment of the bright HB can be ascribed either to contamination from Type Ia supernova ejecta of the low-iron, helium-rich, ejecta of the massive asymptotic giant branch stars of the cluster, or to its mixing with gas, accreting on the cluster from the environment, that has been subject to fast metal enrichment due to its proximity with the galactic bulge. The model proposed here requires only a small age difference of {approx}100 Myr.

  16. Particle seeding flow system for horizontal shock tube

    SciTech Connect (OSTI)

    Johnston, Stephen [Los Alamos National Laboratory; Garcia, Nicolas J. [Los Alamos National Laboratory; Martinez, Adam A. [Los Alamos National Laboratory; Orlicz, Gregory C. [Los Alamos National Laboratory; Prestridge, Katherine P. [Los Alamos National Laboratory

    2012-08-01T23:59:59.000Z

    The Extreme Fluids Team in P-23, Physics Division, studies fluid dynamics at high speeds using high resolution diagnostics. The unsteady forces on a particle driven by a shock wave are not well understood, and they are difficult to model. A horizontal shock tube (HST) is being modified to collect data about the behavior of particles accelerated by shocks. The HST has been used previously for studies of Richtmyer-Meshkov instability using Planar Laser-Induced Fluorescence (PLIF) as well as Particle Image Velocimetry (PIV), diagnostics that measure density and velocity. The purpose of our project is to design a flow system that will introduce particles into the HST. The requirements for this particle flow system (PFS) are that it be non-intrusive, be able to introduce either solid or liquid particles, have an exhaust capability, not interfere with existing diagnostics, and couple with the existing HST components. In addition, the particles must flow through the tube in a uniform way. We met these design criteria by first drawing the existing shock tube and diagnostics and doing an initial design of the ducts for the PFS. We then estimated the losses through the particle flow system from friction and researched possible fans that could be used to drive the particles. Finally, the most challenging component of the design was the coupling to the HST. If we used large inlets, the shock would lose strength as it passed by the inlet, so we designed a novel coupling inlet and outlet that minimize the losses to the shock wave. Our design was reviewed by the Extreme Fluids Team, and it is now being manufactured and built based upon our technical drawings.

  17. acid phosphatase representing: Topics by E-print Network

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

    Manager Meeting Representatives Environmental Sciences and Ecology Websites Summary: with security requirements associated with imaging, use only the DP form located at either of...

  18. ambassador permanent representative: Topics by E-print Network

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

    Manager Meeting Representatives Environmental Sciences and Ecology Websites Summary: with security requirements associated with imaging, use only the DP form located at either of...

  19. alheiras represents considerable: Topics by E-print Network

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

    Manager Meeting Representatives Environmental Sciences and Ecology Websites Summary: with security requirements associated with imaging, use only the DP form located at either of...

  20. alternative values representing: Topics by E-print Network

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

    Manager Meeting Representatives Environmental Sciences and Ecology Websites Summary: with security requirements associated with imaging, use only the DP form located at either of...

  1. active demethylation represent: Topics by E-print Network

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

    Manager Meeting Representatives Environmental Sciences and Ecology Websites Summary: with security requirements associated with imaging, use only the DP form located at either of...

  2. Appointment of Contracting Officers and Contracting Officer Representatives

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2004-04-21T23:59:59.000Z

    The Order established procedures governing the selection, appointment and termination of Department of Energy contracting officers and contracting officer representatives. Cancels DOE O 541.1A.

  3. 4Q CY2000 (PDF), Facility Representative Program Performance...

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

    "The Facility Representative Program Performance Indicators Quarterly Report is attached, covering the period from October to December 2000. Data for these indicators are gathered...

  4. A Class Representative Model for Pure Parsimony Haplotyping

    E-Print Network [OSTI]

    Daniele Catanzaro

    2008-01-10T23:59:59.000Z

    Jan 10, 2008 ... A Class Representative Model for Pure Parsimony Haplotyping. Daniele Catanzaro (dacatanz ***at*** ulb.ac.be) Alessandra Godi (godi ***at*** ...

  5. Reference Buildings by Climate Zone and Representative City:...

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

    akfairbankspre1980v1-47-2.zip More Documents & Publications Reference Buildings by Climate Zone and Representative City: 8 Fairbanks, Alaska Reference Buildings by Climate Zone...

  6. Reference Buildings by Climate Zone and Representative City:...

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

    minneapolispre1980v1-47-2.zip More Documents & Publications Reference Buildings by Climate Zone and Representative City: 6A Minneapolis, Minnesota Reference Buildings by...

  7. Accountable Property Representatives List and Property Pass Signer...

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

    Accountable Property RepresentativesProperty Pass Authorization 1202015 Employee Authorized Organization Phone APR Primary Property Pass Signer PETEET, LISA J. ALL ORGS (202)...

  8. The DC field components of horizontal and vertical electric dipole sources immersed in three-layered stratified media

    E-Print Network [OSTI]

    Boyer, Edmond

    for the solution in the case of horizontal electric dipole (HED) radiation source and the single-component HertzThe DC field components of horizontal and vertical electric dipole sources immersed in three- ponents of the static (DC) fields of horizontal electric dipoles ( HEDs) and vertical electric dipoles

  9. Off-axis variable focus and aberration control mirrors and method

    DOE Patents [OSTI]

    Himmer, Phillip A.; Dickensheets, David L.

    2009-02-24T23:59:59.000Z

    An optical element with multi-layer composites that deforms to reduce optical aberrations in off-axis optic. Methods are also described in relation to the optical element.

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

    E-Print Network [OSTI]

    Verma, Shobhit

    2005-11-01T23:59:59.000Z

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

  11. Measurement of c-axis angular orientation in calcite (CaCO3) nanocrystals using

    E-Print Network [OSTI]

    Coppersmith, Susan N.

    Measurement of c-axis angular orientation in calcite (CaCO3) nanocrystals using X-ray absorption are demonstrated here on geologic calcite (CaCO3) and used to investigate the prismatic layer of a mollusk shell

  12. Multi-DOF precision positioning methodology using two-axis Hall-effect sensors

    E-Print Network [OSTI]

    Kawato, Yusuke

    2006-08-16T23:59:59.000Z

    A novel sensing methodology using two-axis Hall-effect sensors is proposed, where the absolute positioning of a device atop any magnet matrix is possible. This methodology has the capability of micrometer-order positioning resolution as well...

  13. Design and development of a two-axis reluctance based actuator for hexflex nano-positioner

    E-Print Network [OSTI]

    Liles, Howard J

    2010-01-01T23:59:59.000Z

    An endeavor was conducted to explore the design and development of a two-axis linear reluctance actuator for use as a part of a nano-positioner with the application of serving as a small scale kinematic coupling assembly ...

  14. Representing a Robotic Domain Using Temporal Description Logics

    E-Print Network [OSTI]

    Franconi, Enrico

    Representing a Robotic Domain Using Temporal Description Logics Alessandro Artale artale@irst.itc effects; effects may not directly follow the action but more complex temporal relations may hold describes a collection of properties of the world holding at a certain time. Actions are represented through

  15. Representative well models for eight geothermal-resource areas

    SciTech Connect (OSTI)

    Carson, C.C.; Lin, Y.T.; Livesay, B.J.

    1983-02-01T23:59:59.000Z

    Representative well models have been constructed for eight major geothermal-resource areas. The models define representative times and costs associated with the individual operations that can be expected during drilling and completion of geothermal wells. The models were made for and have been used to evaluate the impacts of potential new technologies. The nature, construction, and validation of the models are presented.

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

    E-Print Network [OSTI]

    Leu, Tzong-Shyng "Jeremy"

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

  17. First Light of the 1.6 meter off-axis New Solar Telescope at Big Bear Solar Observatory

    E-Print Network [OSTI]

    -axis configurations, the NST adopts a unique off-axis optical design. Since the Secondary Mirror (SM) and SM supportFirst Light of the 1.6 meter off-axis New Solar Telescope at Big Bear Solar Observatory Wenda Caoab, Nicolas Gorceixb, Roy Coulterb, Aaron Coulterb, Philip R. Goodeab aCenter for Solar-Terrestrial Research

  18. First Measurement of $?_?$ and $?_e$ Events in an Off-Axis Horn-Focused Neutrino Beam

    E-Print Network [OSTI]

    P. Adamson; A. A. Aguilar-Arevalo; C. E. Anderson; A. O. Bazarko; M. Bishai; S. J. Brice; B. C. Brown; L. Bugel; J. Cao; B. C. Choudhary; L. Coney; J. M. Conrad; D. C. Cox; A. Curioni; Z. Djurcic; D. A. Finley; B. T. Fleming; R. Ford; H. R. Gallagher; F. G. Garcia; G. T. Garvey; C. Green; J. A. Green; D. Harris; T. L. Hart; E. Hawker; J. Hylen; R. Imlay; R. A. Johnson; G. Karagiorgi; P. Kasper; T. Katori; T. Kobilarcik; S. Kopp; I. Kourbanis; S. Koutsoliotas; E. M. Laird; S. K. Linden; J. M. Link; Y. Liu; Y. Liu; L. Loiacono; W. C. Louis; A. Marchionni; K. B. M. Mahn; W. Marsh; G. McGregor; M. D. Messier; W. Metcalf; P. D. Meyers; F. Mills; G. B. Mills; J. Monroe; C. D. Moore; J. K. Nelson; R. H. Nelson; V. T. Nguyen; P. Nienaber; J. A. Nowak; S. Ouedraogo; R. B. Patterson; Z. Pavlovic; D. Perevalov; C. C. Polly; E. Prebys; J. L. Raaf; H. Ray; B. P. Roe; A. D. Russell; V. Sandberg; R. Schirato; D. Schmitz; M. H. Shaevitz; F. C. Shoemaker; W. Smart; D. Smith; M. Sodeberg; M. Sorel; P. Spentzouris; I. Stancu; R. J. Stefanski; M. Sung; H. A. Tanaka; R. Tayloe; M. Tzanov; P. Vahle; R. Van de Water; B. Viren; M. O. Wascko; D. H. White; M. J. Wilking; H. J. Yang; F. X. Yumiceva; G. P. Zeller; E. D. Zimmerman; R. Zwaska

    2009-07-21T23:59:59.000Z

    We report the first observation of off-axis neutrino interactions in the MiniBooNE detector from the NuMI beamline at Fermilab. The MiniBooNE detector is located 745 m from the NuMI production target, at 110 mrad angle ($6.3^{\\circ}$) with respect to the NuMI beam axis. Samples of charged current quasi-elastic $\

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

    DOE Patents [OSTI]

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

    2012-09-11T23:59:59.000Z

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

  20. The Effect of Whole Body Horizontal Vibration in Position Sense and Dynamic Stability of the Spine

    E-Print Network [OSTI]

    Lamis, Farhana

    2008-06-09T23:59:59.000Z

    at the 5 Hz frequency. These results would suggest that horizontal vibration may be less of a factor in whole-body vibration induced injuries. This work was supported by University of Kansas Transportation Research Institute Grant Program....

  1. Regulation of horizontal gene transfer by intercellular peptide signaling in Bacillus subtilis

    E-Print Network [OSTI]

    Auchtung, Jennifer M

    2006-01-01T23:59:59.000Z

    Horizontal gene transfer plays an important role in bacterial evolution. Although acquisition of foreign DNA can be beneficial to cells, it can also be detrimental. Therefore, cells that possess mechanisms to regulate ...

  2. TOTALLY GEODESIC HORIZONTALLY CONFORMAL MAPS (*) by M. T. MUSTAFA (in Trieste) (**)

    E-Print Network [OSTI]

    Mustafa, M. Tahir

    TOTALLY GEODESIC HORIZONTALLY CONFORMAL MAPS (*) by M. T. MUSTAFA (in Trieste) (**) SUMMARY.- We.O.box 586, 34100 Trieste. Email: mustafa@ictp.trieste.it. 1 #12;2 M. T. MUSTAFA The remaining part

  3. Heat transfer during film condensation of potassium vapor on a horizontal plate

    E-Print Network [OSTI]

    Meyrial, Paul M.

    1968-01-01T23:59:59.000Z

    The object of the investigation is to analyze the following two features of heat transfer during condensation of potassium vapor: a. Heat transfer during film condensation of a pure saturated potassium vapor on a horizontal ...

  4. Driver mental workload requirements on horizontal curves based on occluded vision test measurements

    E-Print Network [OSTI]

    Shafer, Mark Anthony

    1994-01-01T23:59:59.000Z

    This thesis documents an evaluation of driver mental workload requirements on horizontal curves based on occluded vision test measurements. Driver workload is an important concept in the design of highway systems. A successful highway design...

  5. Comparison of day and night vehicular speeds on horizontal curves on rural two-lane highways

    E-Print Network [OSTI]

    Guzman, Jesus

    1996-01-01T23:59:59.000Z

    the magnitude of the difference between daytime and nighttime speeds is small for all degrees of curvature, a variable accounting for light condition is not needed for operating-speedbased profile modeling for horizontal alignment design consistency evaluation....

  6. A comparative analysis of numerical simulation and analytical modeling of horizontal well cyclic steam injection 

    E-Print Network [OSTI]

    Ravago Bastardo, Delmira Cristina

    2005-08-29T23:59:59.000Z

    The main objective of this research is to compare the performance of cyclic steam injection using horizontal wells based on the analytical model developed by Gunadi against that based on numerical simulation. For comparison, ...

  7. Temperature Prediction Model for Horizontal Well with Multiple Fractures in Shale Reservoir

    E-Print Network [OSTI]

    Yoshida, Nozomu

    2013-04-12T23:59:59.000Z

    Fracture diagnostics is a key technology for well performance prediction of a horizontal well in a shale reservoir. The combination of multiple fracture diagnostic techniques gives reliable results, and temperature data has potential to provide more...

  8. Interpreting Horizontal Well Flow Profiles and Optimizing Well Performance by Downhole Temperature and Pressure Data

    E-Print Network [OSTI]

    Li, Zhuoyi

    2011-02-22T23:59:59.000Z

    be used to obtain downhole flow conditions, which is key information to control and optimize horizontal well production. However, the fluid flow in the reservoir is often multiphase and complex, which makes temperature and pressure interpretation very...

  9. Growth and Transfer of Monolithic Horizontal ZnO Nanowire Superstructures onto Flexible Substrates

    E-Print Network [OSTI]

    Wang, Zhong L.

    , and electromechanical nanodevices, such as UV lasers,[2] light-emitting diodes,[3,4] field- emission devices,[5] solar of the NWs. Furthermore, by encapsulating the NW arrays with a polymer thin film, the horizontal NW arrays

  10. PREDICTION OF CUTTINGS BED HEIGHT WITH COMPUTATIONAL FLUID DYNAMICS IN DRILLING HORIZONTAL AND HIGHLY DEVIATED WELLS

    E-Print Network [OSTI]

    Ullmer, Brygg

    PREDICTION OF CUTTINGS BED HEIGHT WITH COMPUTATIONAL FLUID DYNAMICS IN DRILLING HORIZONTAL parameters such as wellbore geometry, pump rate, drilling fluid rheology and density, and maximum drilling Computational Fluid Dynamics methods. Movement, concentration and accumulation of drilled cuttings in non

  11. A Subbasin-based framework to represent land surface processes in an Earth System Model

    SciTech Connect (OSTI)

    Tesfa, Teklu K.; Li, Hongyi; Leung, Lai-Yung R.; Huang, Maoyi; Ke, Yinghai; Sun, Yu; Liu, Ying

    2014-05-20T23:59:59.000Z

    Realistically representing spatial heterogeneity and lateral land surface processes within and between modeling units in earth system models is important because of their implications to surface energy and water exchange. The traditional approach of using regular grids as computational units in land surface models and earth system models may lead to inadequate representation of lateral movements of water, energy and carbon fluxes, especially when the grid resolution increases. Here a new subbasin-based framework is introduced in the Community Land Model (CLM), which is the land component of the Community Earth System Model (CESM). Local processes are represented assuming each subbasin as a grid cell on a pseudo grid matrix with no significant modifications to the existing CLM modeling structure. Lateral routing of water within and between subbasins is simulated with the subbasin version of a recently-developed physically based routing model, Model for Scale Adaptive River Routing (MOSART). As an illustration, this new framework is implemented in the topographically diverse region of the U.S. Pacific Northwest. The modeling units (subbasins) are delineated from high-resolution Digital Elevation Model while atmospheric forcing and surface parameters are remapped from the corresponding high resolution datasets. The impacts of this representation on simulating hydrologic processes are explored by comparing it with the default (grid-based) CLM representation. In addition, the effects of DEM resolution on parameterizing topography and the subsequent effects on runoff processes are investigated. Limited model evaluation and comparison showed that small difference between the averaged forcing can lead to more significant difference in the simulated runoff and streamflow because of nonlinear horizontal processes. Topographic indices derived from high resolution DEM may not improve the overall water balance, but affect the partitioning between surface and subsurface runoff. More systematic analyses are needed to determine the relative merits of the subbasin representation compared to the commonly used grid-based representation, especially when land surface models are approaching higher resolutions.

  12. Relationship between design speed and operating speed at horizontal curves on suburban arterials

    E-Print Network [OSTI]

    Shamburger, Carl Brian

    1995-01-01T23:59:59.000Z

    RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to the OIIice of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1995 Major Subject: Civil Engineering RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to Texas A&M University...

  13. Innovative technology summary report: in situ air stripping using horizontal wells

    SciTech Connect (OSTI)

    NONE

    1995-04-01T23:59:59.000Z

    In situ air stripping (ISAS) technology was developed to remediate soils and ground water contaminated with volatile organic compounds (VOCs) both above and below the water table. ISAS employs horizontal wells to inject (sparge) air into the ground water and vacuum extract VOCs from vadose zone soils. The innovation is creation of a system that combines two somewhat innovative technologies, air sparging and horizontal wells, with a baseline technology, soil vapor extraction, to produce a more efficient in situ remediation system.

  14. In situ air stripping using horizontal wells. Innovative technology summary report

    SciTech Connect (OSTI)

    NONE

    1995-04-01T23:59:59.000Z

    In-situ air stripping employs horizontal wells to inject or sparge air into the ground water and vacuum extract VOC`S from vadose zone soils. The horizontal wells provide better access to the subsurface contamination, and the air sparging eliminates the need for surface ground water treatment systems and treats the subsurface in-situ. A full-scale demonstration was conducted at the Savannah River Plant in an area polluted with trichloroethylene and tetrachloroethylene. Results are described.

  15. The drilling of a horizontal well in a mature oil field

    SciTech Connect (OSTI)

    Rougeot, J.E.; Lauterbach, K.A.

    1991-01-01T23:59:59.000Z

    This report documents the drilling of a medium radius horizontal well in the Bartlesville Sand of the Flatrock Field, Osage County, Oklahoma by Rougeot Oil and Gas Corporation (Rougeot) of Sperry, Oklahoma. The report includes the rationale for selecting the particular site, the details of drilling the well, the production response, conclusions reached, and recommendations made for the future drilling of horizontal wells. 11 figs., 2 tabs.

  16. Does the variation of solar inter-network horizontal field follow sunspot cycle?

    E-Print Network [OSTI]

    Jin, Chunlan

    2015-01-01T23:59:59.000Z

    The ubiquitousness of solar inter-network horizontal magnetic field has been revealed by the space-borne observations with high spatial resolution and polarization sensitivity. However, no consensus has been achieved on the origin of the horizontal field among solar physicists. For a better understanding, in this study we analyze the cyclic variation of inter-network horizontal field by using the spectro-polarimeter observations provided by Solar Optical Telescope on board Hinode, covering the interval from 2008 April to 2015 February. The method of wavelength integration is adopted to achieve a high signal-to-noise ratio. It is found that from 2008 to 2015 the inter-network horizontal field does not vary when solar activity increases, and the average flux density of inter-network horizontal field is 87$\\pm$1 G, In addition, the imbalance between horizontal and vertical field also keeps invariant within the scope of deviation, i.e., 8.7$\\pm$0.5, from the solar minimum to maximum of solar cycle 24. This result...

  17. Gauge Field Theory of Horizontal Symmetry Generated by a Central Extension of the Pauli Algebra

    E-Print Network [OSTI]

    Ikuo S. Sogami

    2009-07-07T23:59:59.000Z

    The standard model of particle physics is generalized so as to be furnished with a horizontal symmetry generated by an intermediary algebra between simple Lie algebras $\\mathfrak{su}(2)$ and $\\mathfrak{su}(3)$. Above a certain high energy scale $\\breve{\\Lambda}$, the horizontal gauge symmetry is postulated to hold so that the basic fermions, quarks and leptons, form its fundamental triplets, and a triplet and singlet of the horizontal gauge fields distinguish generational degrees of freedom. A horizontal scalar triplet is introduced to make the gauge fields super-massive by breaking the horizontal symmetry at $\\breve{\\Lambda}$. From this scalar triplet, there emerge real scalar fields which do not interact with fermions except for neutrino species and may give substantial influence on evolution of the universe. Another horizontal scalar triplet which breaks the electroweak symmetry at a low energy scale $\\Lambda\\simeq 2\\times 10^2$GeV reproduces all of the results of the Weinberg-Salam theory, produces hierarchical mass matrices with less numbers of unknown parameters in a unified way and predicts six massive scalar particles, some of which might be observed by the future LHC experiment.

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

    DOE Patents [OSTI]

    Price, Jeffery R.; Bingham, Philip R.

    2005-11-08T23:59:59.000Z

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

  19. Department of Defense Representatives Visit Hanford to Benchmark Safety

    Broader source: Energy.gov [DOE]

    RICHLAND, Wash., December 16, 2005, Representatives of the Department of Defense's (DoD's) Voluntary Protection Program Center of Excellence (VPP CX) working to reduce injuries at selected (DoD)...

  20. Reference Buildings by Climate Zone and Representative City:...

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

    A Baltimore, Maryland Reference Buildings by Climate Zone and Representative City: 4A Baltimore, Maryland In addition to the ZIP file for each building type, you can directly view...

  1. Reference Buildings by Climate Zone and Representative City:...

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

    A Chicago, Illinois Reference Buildings by Climate Zone and Representative City: 5A Chicago, Illinois In addition to the ZIP file for each building type, you can directly view the...

  2. Reference Buildings by Climate Zone and Representative City:...

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

    B Helena, Montana Reference Buildings by Climate Zone and Representative City: 6B Helena, Montana In addition to the ZIP file for each building type, you can directly view the...

  3. Reference Buildings by Climate Zone and Representative City:...

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

    B Boulder, Colorado Reference Buildings by Climate Zone and Representative City: 5B Boulder, Colorado In addition to the ZIP file for each building type, you can directly view the...

  4. Reference Buildings by Climate Zone and Representative City:...

    Energy Savers [EERE]

    1A Miami, Florida Reference Buildings by Climate Zone and Representative City: 1A Miami, Florida In addition to the ZIP file for each building type, you can directly view the...

  5. Reference Buildings by Climate Zone and Representative City:...

    Energy Savers [EERE]

    7 Duluth, Minnesota Reference Buildings by Climate Zone and Representative City: 7 Duluth, Minnesota In addition to the ZIP file for each building type, you can directly view the...

  6. Reference Buildings by Climate Zone and Representative City:...

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

    B Phoenix, Arizona Reference Buildings by Climate Zone and Representative City: 2B Phoenix, Arizona In addition to the ZIP file for each building type, you can directly view the...

  7. Reference Buildings by Climate Zone and Representative City:...

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

    B Las Vegas, Nevada Reference Buildings by Climate Zone and Representative City: 3B Las Vegas, Nevada In addition to the ZIP file for each building type, you can directly view the...

  8. Reference Buildings by Climate Zone and Representative City:...

    Energy Savers [EERE]

    B Los Angeles, California Reference Buildings by Climate Zone and Representative City: 3B Los Angeles, California In addition to the ZIP file for each building type, you can...

  9. Reference Buildings by Climate Zone and Representative City:...

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

    C San Francisco, California Reference Buildings by Climate Zone and Representative City: 3C San Francisco, California In addition to the ZIP file for each building type, you can...

  10. Reference Buildings by Climate Zone and Representative City:...

    Energy Savers [EERE]

    A Atlanta, Georgia Reference Buildings by Climate Zone and Representative City: 3A Atlanta, Georgia In addition to the ZIP file for each building type, you can directly view the...

  11. Reference Buildings by Climate Zone and Representative City:...

    Energy Savers [EERE]

    A Houston, Texas Reference Buildings by Climate Zone and Representative City: 2A Houston, Texas In addition to the ZIP file for each building type, you can directly view the...

  12. Reference Buildings by Climate Zone and Representative City:...

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

    C Seattle, Washington Reference Buildings by Climate Zone and Representative City: 4C Seattle, Washington In addition to the ZIP file for each building type, you can directly view...

  13. Changes to the Facility Representative Program, 10/26/1999

    Broader source: Energy.gov [DOE]

    Effective October 1, 1999, the Deputy Secretary tasked this office to manage the Facility Representative Program. We look forward to working with you in continuing and improving this very important...

  14. Reference Buildings by Climate Zone and Representative City:...

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

    new2004v1.35.0.zip refbldg3ausagaatlantanew2004v1-47-2.zip More Documents & Publications Reference Buildings by Climate Zone and Representative City: 3A Atlanta, Georgia...

  15. Reference Buildings by Climate Zone and Representative City:...

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

    new2004v1.35.0.zip refbldg1ausaflmiaminew2004v1-47-2.zip More Documents & Publications Reference Buildings by Climate Zone and Representative City: 1A Miami, Florida...

  16. Reference Buildings by Climate Zone and Representative City:...

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

    new2004v1.35.0.zip refbldg2ausatxhoustonnew2004v1-47-2.zip More Documents & Publications Reference Buildings by Climate Zone and Representative City: 2A Houston, Texas...

  17. Appointment of Contracting Officers and Contracting Officer Representatives

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1996-04-30T23:59:59.000Z

    To establish procedures governing the selection, appointment, and termination of contracting officers and for the appointment of contracting officer representatives. Cancels DOE Order 4200.4A. Canceled by DOE O 541.1A.

  18. Reference Buildings by Climate Zone and Representative City:...

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

    B Albuquerque, New Mexico Reference Buildings by Climate Zone and Representative City: 4B Albuquerque, New Mexico In addition to the ZIP file for each building type, you can...

  19. Quantum states representing perfectly secure bits are always distillable

    E-Print Network [OSTI]

    Pawel Horodecki; Remigiusz Augusiak

    2007-11-06T23:59:59.000Z

    It is proven that recently introduced states with perfectly secure bits of cryptographic key (private states representing secure bit) [K. Horodecki et al., Phys. Rev. Lett. 94, 160502 (2005)] as well as its multipartite and higher dimension generalizations always represent distillable entanglement. The corresponding lower bounds on distillable entanglement are provided. We also present a simple alternative proof that for any bipartite quantum state entanglement cost is an upper bound on distillable cryptographic key in bipartite scenario.

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

    SciTech Connect (OSTI)

    Hall, G. N., E-mail: hall98@llnl.gov; Izumi, N.; Tommasini, R.; Carpenter, A. C.; Palmer, N. E.; Zacharias, R.; Felker, B.; Holder, J. P.; Allen, F. V.; Bell, P. M.; Bradley, D.; Montesanti, R.; Landen, O. L. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States)

    2014-11-15T23:59:59.000Z

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

  1. A synopsis of environmental horizontal wells at the Savannah River Site

    SciTech Connect (OSTI)

    Denham, M.E.; Lombard, K.H.

    1995-07-01T23:59:59.000Z

    Seven horizontal wells for environmental remediation were installed at the Savannah River Site as part of an Integrated Demonstration Project sponsored by the Department of Energy`s Office of Technology Development. The wells were used to demonstrate innovative remediation systems for the clean up of chlorinated organic solvent contamination in groundwater and the vadose zone. The wells were installed in four demonstrations of different horizontal drilling technologies. A short-radius petroleum industry technology, a modified petroleum industry technology (using a down-hole motor), a utility industry technology, and a river crossing technology were demonstrated. The goals of the demonstrations were to show the utility of horizontal wells in environmental remediation and further development of the technology required to install these wells. From the first demonstration in 1988 to the latest in 1991, there was significant evolution in horizontal drilling technology. The main technical challenges in the first demonstration were directional control during drilling and borehole instability. Through advancement of the technology these problems were overcome and did not affect the last demonstration. Those considering the use of horizontal wells for environmental remediation will benefit from the knowledge gained from these demonstrations.

  2. Condensation of Refrigerant-11 on the outside of horizontal and inclined enhanced tubes

    SciTech Connect (OSTI)

    Domingo, N.

    1982-12-01T23:59:59.000Z

    Heat transfer condensation tests with Refrigerant-11 were performed on the outside of a smooth tube and a variety of enhanced tubes oriented horizontally and at various tube inclinations. One smooth tube and seven enhanced (externally fluted, roped, spiraled, and externally finned) tubes of 2.54-cm (1-in.) nominal outside diameter and 1.17-m (4-ft) length were tested. Several of the tested tubes featured internal enhanced geometries, which were caused by the heat transfer enhancing geometry on the tube's external surface. Condensing heat transfer coefficients are reported as composite coefficients, which combine the resistance of the condensing film and the tube wall, and are based on total tube outside surface area. Results show that in the horizontal condensing mode, the rank order (best to worst) of the tube geometries tested was spiral-shaped tubes, rope-shaped tubes, smooth tube, externally finned tube, and externally fluted tube. For a spiral-shaped tube, horizontal composite coefficients were up to 2.0 times the corresponding horizontal smooth tube values. For tilt angles greater than or equal to 60/sup 0/ from the horizontal, the condensing performance of the externally fluted tube was best of all the tubes tested.

  3. C-26A well sets new standard for ER horizontal wells

    SciTech Connect (OSTI)

    Andresen, S.; Hovda, S. [Norsk Hydro Production a.s, Bergen (Norway); Olsen, T.L. [Baker Hughes INTEQ, Bergen (Norway)

    1995-11-01T23:59:59.000Z

    Well 30/6-C-26A in the Norwegian North Sea has a horizontal reach of 25,758 ft, which was briefly a new world record in extended reach drilling. The last 6,888 ft was drilled horizontally in the reservoir 20--26 ft vertically above the oil-water contact. The Oseberg field was discovered in 1979. To develop this giant (16.8 x 3.1 mile, 27 x 5 km) field, two platforms were placed 9.3 miles apart. To drain the oil between the platforms, two subsea wells were drilled and completed. The first horizontal well in the Oseberg field was drilled in 1992. Since then 17 horizontal wells have been successfully drilled and completed. The general trend during this period is that both the length of the horizontal reservoir section and the total depth for the wells have increased. New equipment and technology, as well as general field experience, played an important role when deciding to drill well C-26A. The paper describes well C-26A objectives, well bore stability, well path considerations, the casing program, hydraulics and hole cleaning and well completion.

  4. An integrated approach to evaluation of horizontal well prospects in the Niobrara Shale

    SciTech Connect (OSTI)

    Stright, D.H. Jr. [Simtech Consulting Services Inc., Golden, CO (United States); Robertson, R.D. [Cabot Oil and Gas, Denver, CO (United States)

    1995-11-01T23:59:59.000Z

    Integrated use of surface and subsurface geologic data, structural deformation analysis from second-derivative maps, and dimensionless type curves in identifying potential horizontal well locations in the fractured Niobrara Shale of northwest Colorado is described. The analysis included construction of detailed structure maps from surface geology with tie-ins to seismic surveys and well control and of second-derivative maps that were overlaid on production data to determine the minimum radius of curvature required for commercial production. Reservoir properties were calculated for known fields from type-curve matching with type curves for dual-porosity, anisotropic reservoirs with stress-sensitive permeability. The curves were constructed for vertical and horizontal wells by use of reservoir-simulation models. Spacing and economics of drilling horizontal Niobrara wells in northwest Colorado were evaluated. The analysis suggests that recoverable oil from the fractured Niobrara in northwest Colorado averages 1,392 bbl oil/acre on the basis of a productive fracture area identified by second derivatives of the structural surface with values > 1{times}10{sup {minus}4.5}ft{sup {minus}1}. It is also indicated that horizontal well spacing in the fractured Niobrara should be >640 acres. In some instances, it may be more economical to develop the fractured Niobrara with vertical rather than horizontal wells.

  5. CFD Analysis Of Particle Transport In Axi-Symmetric Tubes Under The Influence Of Thermophoretic Force

    SciTech Connect (OSTI)

    Abarham, Mehdi [University of Michigan; Zamankhan, Parsa [University of Michigan; Hoard, John W. [University of Michigan; Styles, Dan [Ford Motor Company; Sluder, Scott [ORNL; Storey, John Morse [ORNL; Lance, Michael J [ORNL; Assanis, Dennis [University of Michigan

    2013-01-01T23:59:59.000Z

    In this study, we developed two frameworks to investigate the thermophoretic particulate deposition in non-isothermal tube flows conveying particles ranging from 10 to 300 nm; a one dimensional model where the variables are assumed to be uniform in each cross section perpendicular to the tube axis and an axi-symmetric model where the aforementioned assumption is relaxed. In the one dimensional model, the rate of mass deposition along the inner surface of the tube is computed based on the local thermophoretic velocity of the particulate phase at the wall. This velocity is proportional to the radial gradient of the temperature at the wall and is calculated via some empirical correlations for heat transfer in tube flows. In the axi-symmetric model, the rate of deposition is computed through the Fick s law after solving the species transport equation for the solid phase. We included the formation of the soot layer through moving the gas solid interface in both models. The tube effectiveness (the ratio of actual heat transfer to the maximum possible heat transfer) decreases due to the formation of the layer. Model outputs including deposited mass along the tube wall and the tube effectiveness drop have been compared against experiments. While the computed results through both models agree with the trend of experimental data, the axi-symmetric results are closer to the experiments in most cases. The calculated deposited mass is smaller (and closer to experiments) for the axi-symmetric model compared to the one dimensional model in all cases. This indicates that the axi-symmetric model estimates the deposited mass more accurately.

  6. Landscape Characterization and Representativeness Analysis for Understanding Sampling Network Coverage

    SciTech Connect (OSTI)

    Maddalena, Damian; Hoffman, Forrest; Kumar, Jitendra; Hargrove, William

    2014-08-01T23:59:59.000Z

    Sampling networks rarely conform to spatial and temporal ideals, often comprised of network sampling points which are unevenly distributed and located in less than ideal locations due to access constraints, budget limitations, or political conflict. Quantifying the global, regional, and temporal representativeness of these networks by quantifying the coverage of network infrastructure highlights the capabilities and limitations of the data collected, facilitates upscaling and downscaling for modeling purposes, and improves the planning efforts for future infrastructure investment under current conditions and future modeled scenarios. The work presented here utilizes multivariate spatiotemporal clustering analysis and representativeness analysis for quantitative landscape characterization and assessment of the Fluxnet, RAINFOR, and ForestGEO networks. Results include ecoregions that highlight patterns of bioclimatic, topographic, and edaphic variables and quantitative representativeness maps of individual and combined networks.

  7. Landscape Characterization and Representativeness Analysis for Understanding Sampling Network Coverage

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

    Maddalena, Damian; Hoffman, Forrest; Kumar, Jitendra; Hargrove, William

    Sampling networks rarely conform to spatial and temporal ideals, often comprised of network sampling points which are unevenly distributed and located in less than ideal locations due to access constraints, budget limitations, or political conflict. Quantifying the global, regional, and temporal representativeness of these networks by quantifying the coverage of network infrastructure highlights the capabilities and limitations of the data collected, facilitates upscaling and downscaling for modeling purposes, and improves the planning efforts for future infrastructure investment under current conditions and future modeled scenarios. The work presented here utilizes multivariate spatiotemporal clustering analysis and representativeness analysis for quantitative landscape characterization and assessment of the Fluxnet, RAINFOR, and ForestGEO networks. Results include ecoregions that highlight patterns of bioclimatic, topographic, and edaphic variables and quantitative representativeness maps of individual and combined networks.

  8. The role of the pituitary-adrenal axis in mild shock-induced hypoalgesia

    E-Print Network [OSTI]

    Biles, Mandy Kathleen

    1991-01-01T23:59:59.000Z

    THE ROLE OF THE PITUITARY-ADRENAL AXIS IN MILD SHOCK-INDUCED HYPOALGESIA A Thesis by MANDY KATHLEEN BILES Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1991 Major Subject: Psychology THE ROLE OF THE PITUITARY-ADRENAL AXIS IN MILD SHOCK-INDUCED HYPOALGESIA A Thesis by MANDY KATHLEEN BILES Approved as to style and content by: ames W. Grau (Chair of Committee) S eve Worchel...

  9. APPLICATION OF WATER-JET HORIZONTAL DRILLING TECHNOLOGY TO DRILL AND ACIDIZE HORIZONTAL DRAIN HOLES, TEDBIT (SAN ANDRES) FIELD, GAINES COUNTY, TEXAS

    SciTech Connect (OSTI)

    Michael W. Rose

    2005-09-22T23:59:59.000Z

    The San Andres Formation is one of the major hydrocarbon-producing units in the Permian Basin, with multiple reservoirs contained within the dolomitized subtidal portions of upward shoaling carbonate shelf cycles. The test well is located in Tedbit (San Andres) Field in northeastern Gaines County, Texas, in an area of scattered San Andres production associated with local structural highs. Selected on the basis of geological and historical data, the Oil and Gas Properties Wood No. 1 well is considered to be typical of a large number of San Andres stripper wells in the Permian Basin. Thus, successful completion of horizontal drain holes in this well would demonstrate a widely applicable enhanced recovery technology. Water-jet horizontal drilling is an emerging technology with the potential to provide significant economic benefits in marginal wells. Forecast benefits include lower recompletion costs and improved hydrocarbon recoveries. The technology utilizes water under high pressure, conveyed through small-diameter coiled tubing, to jet horizontal drain holes into producing formations. Testing of this technology was conducted with inconclusive results. Paraffin sludge and mechanical problems were encountered in the wellbore, initially preventing the water-jet tool from reaching the kick-off point. After correcting these problems and attempting to cut a casing window with the water-jet milling assembly, lateral jetting was attempted without success.

  10. Radionuclides in Small Mammals Collected at the Dual-Axis Radiographic Hydrodynamic Test (DARHT) Facility during 2001-- 2003

    SciTech Connect (OSTI)

    P.R. Fresquez

    2005-01-20T23:59:59.000Z

    Rodents are effective indicators of environmental contamination and the Dual-Axis Radiographic Hydrodynamic Test (DARHT) Facility Mitigation Action Plan specifies the (radionuclide) comparison of small mammals to baseline levels to determine if there are any impacts as a result of operations. Consequently, samples of (whole body) field mice (Peromyscus spp.) were collected from within the grounds of the DARHT facility at Los Alamos National Laboratory, Technical Area 15, from 2001 through 2003. Samples were analyzed for {sup 3}H, {sup 137}Cs, {sup 90}Sr, {sup 241}Am, {sup 238}Pu, {sup 239,240}Pu, {sup 234}U, {sup 235}U, and {sup 238}U. Results, which represent three years since the start of operations in 2000, were compared with baseline statistical reference level (BSRL) data established over a four-year-long preoperational period. Most radionuclides in mice were either at nondetectable levels or within BSRLs. The few radionuclides that were above BSRLs included U isotopes; and the ratios of some samples indicated depleted U sources. Although the amounts of U in some samples were just above BSRLs, and since depleted U is less soluble and less toxic (chemical and radioactive) than naturally occurring U, the very small levels in the mice collected around the DARHT facility grounds are unlikely to pose a threat to predators that feed upon them.

  11. 66 Academic Nurse Program representatives assist the School

    E-Print Network [OSTI]

    Grishok, Alla

    interviews, professional development, and dealing with the unknown. Anesthesia Program Representative: Laura of safe surgery and anesthesia practices. Since gradua- tion, he has been involved in global anesthesia also currently serves on the Anesthesia Committee for the Global Alliance for Surgical and Anesthesia

  12. Does convective aggregation need to be represented in cumulus parameterizations?

    E-Print Network [OSTI]

    Does convective aggregation need to be represented in cumulus parameterizations? Isabelle Tobin,1 in phenomena such as ``hot spots'' or the Madden-Julian Oscillation. These findings support the need climate models lack any such representation. The ability of a cloud system- resolving model to reproduce

  13. Representing Topological Relationships between Complex Regions by F-Histograms

    E-Print Network [OSTI]

    Matsakis, Pascal

    Representing Topological Relationships between Complex Regions by F-Histograms Lukasz Wawrzyniak between two regions in terms of the thirteen Allen relations. An index to measure the complexity Work in the modeling of topological relationships often relies on an extension into the spatial domain

  14. Appointment of Contracting Officers and Contracting Officer's Representatives

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2000-10-27T23:59:59.000Z

    To establish procedures governing the selection, appointment, and termination of contracting officers and for the appointment of contracting officer's representatives. To ensure that only trained and qualified procurement and financial assistance professionals, within the scope of this Order, serve as contracting officers. Cancels DOE O 541.1. Canceled by DOE O 541.1B.

  15. US House of Representatives Appropriation Committee Report May 18, 2005

    E-Print Network [OSTI]

    US House of Representatives Appropriation Committee Report May 18, 2005 Fusion Energy Sciences The Committee recommendation for fusion energy sciences is $295,155,000, an increase of $5,605,000 over that two-thirds of the proposed increase for the International Thermonuclear Experimental Reactor (ITER

  16. Representing Abductive Practical Reasoning as an Action-Based

    E-Print Network [OSTI]

    Atkinson, Katie

    Representing Abductive Practical Reasoning as an Action-Based Alternating Transition System Floris present an approach to abductive reasoning by examin- ing it in the context of an argumentation scheme to rea- son abductively about how an agent might have acted to find itself in a particular sceanrio

  17. Representative Seroprevalences of Brucellosis in Humans and Livestock in Kyrgyzstan

    E-Print Network [OSTI]

    Richner, Heinz

    Representative Seroprevalences of Brucellosis in Humans and Livestock in Kyrgyzstan Bassirou Bonfoh), 60 Togolok Moldo Street, Bishkek, Kyrgyzstan 3 Veterinary Public Health Institute, Vetsuisse Faculty, Swiss Red Cross, 187/1 Sydykova Street, Bishkek, Kyrgyzstan 5 Swiss Tropical and Public Health Institute

  18. Lattices which can be represented as lattices of intervals

    E-Print Network [OSTI]

    Vaggelis Felouzis

    2006-09-04T23:59:59.000Z

    We investigate lattices that can be represented as sublattices of the lattice of all convex subsets of a linearly ordered set $(X, \\leq)$ and as lattices of convex subsets of $(X, \\leq)$. A representation theory for general lattices is presented and also some applications in general topology are given.

  19. REPRESENTING GEO-SCIENTIFIC DOMAIN CONCEPTS Boyan Brodaric

    E-Print Network [OSTI]

    Bennett, Brandon

    1 REPRESENTING GEO-SCIENTIFIC DOMAIN CONCEPTS Boyan Brodaric Penn State Geography and Geological Survey of Canada brodaric@NRCan.gc.ca 1. Introduction The geo-sciences, including geology, ecology, soil accumulate and change, and (3) are characterized by degrees of uncertainty and granularity. This suggests

  20. Necessary and sufficient conditions for representing general distributions by Coxians

    E-Print Network [OSTI]

    Necessary and sufficient conditions for representing general distributions by Coxians Takayuki University Pittsburgh, PA 15213 Abstract A common analytical technique involves using a Coxian distribution to model a general distribution G, where the Coxian distribution agrees with G on the first three moments

  1. Necessary and sufficient conditions for representing general distributions by Coxians

    E-Print Network [OSTI]

    Necessary and sufficient conditions for representing general distributions by Coxians Takayuki University Pittsburgh, PA 15213 Abstract A common analytical technique involves using a Coxian distribution to model a general distribution ¢ , where the Coxian distribution agrees with ¢ on the first three moments

  2. Necessary and Sucient Conditions for Representing General Distributions by Coxians

    E-Print Network [OSTI]

    Harchol-Balter, Mor

    Necessary and SuÆcient Conditions for Representing General Distributions by Coxians Takayuki involves using a Coxian dis- tribution to model a general distribution G, where the Coxian distribu- tion of the Coxian distribution. Algo- rithms for mapping an input distribution G to a Coxian distribution largely

  3. Representing Exceptional Behaviour at the earlier Phases of Software Development

    E-Print Network [OSTI]

    Kent, University of

    Representing Exceptional Behaviour at the earlier Phases of Software Development Rogério de Lemos. Exception handling has been traditionally associated with the design phase of the software lifecycle, during not received enough attention /Avizienes 97/. Ideally, for each identified phase of the software lifecycle

  4. Melanoma Recognition Using Representative and Discriminative Kernel Classifiers

    E-Print Network [OSTI]

    Caputo, Barbara

    Melanoma Recognition Using Representative and Discriminative Kernel Classifiers Tatiana Tommasi1 caputo@nada.kth.se Abstract. Malignant melanoma is the most deadly form of skin lesion. Early diagnosis these algorithms against the (to our knowledge) state-of-the-art method on melanoma recognition, exploring how

  5. DATE: December 11, 2013 MEMO TO: Curricular Representative

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Instruction Modes List: This report lists sections with an Instruction Mode not set to `P' in ISIS. · Meets Attendance List: This report lists sections coded in ISIS as optional. · Curricular Representative List can be run in ISIS, and displays real-time curricular data for auditing. In ISIS: Reporting Tools

  6. INTRODUCTION The mammalian hair follicle is a representative but highly

    E-Print Network [OSTI]

    Chuong, Cheng-Ming

    INTRODUCTION The mammalian hair follicle is a representative but highly complex epithelial organ, hair follicle induction requires complex signaling between the two apposing tissue layers, which to the formation of the hair follicle, which contain the dermal papilla, proliferating matrix cells and slowly

  7. 2870 IEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 60, NO. 9, SEPTEMBER 2013 Low-Resistivity Long-Length Horizontal Carbon

    E-Print Network [OSTI]

    paper, the electrical and self-heating characterization of long HACNT bundles are reported. Negative--Carbon nanotubes, characterization, horizontally aligned, interconnects, resistivity, self-heating, temperature

  8. Low-mass evolution from HE ignition to beyond the horizontal branch

    SciTech Connect (OSTI)

    Despain, K.

    1980-01-01T23:59:59.000Z

    The evolution of an 0.6 M/sub solar mass/ stellar model during core helium burning is presented. Following the off-center ignition of helium in the core flash, the star remains on the red giant branch for > 10/sup 6/ years, undergoing twelve additional flashes. After leaving the giant branch, the star evolves on the horizontal branch for 8.15 x 10/sup 7/ years before returning to the giant branch and undergoing strong helium-shell flashes. The implications for horizontal branch and RR Lyrae stars are discussed.

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

    DOE Patents [OSTI]

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

    1982-01-01T23:59:59.000Z

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

  10. Extremely Soft X-ray Flash as the indicator of off-axis orphan GRB afterglow

    E-Print Network [OSTI]

    Urata, Yuji; Yamazaki, Ryo; Sakamoto, Takanori

    2015-01-01T23:59:59.000Z

    We verified the off-axis jet model of X-ray flashes (XRFs) and examined a discovery of off-axis orphan gamma-ray burst (GRBs) afterglows. The XRF sample was selected on the basis of the following three factors: (1) a constraint on the lower peak energy of the prompt spectrum $E^{src}_{obs}$, (2) redshift measurements, and (3) multi-color observations of an earlier (or brightening) phase. XRF020903 was the only sample selected basis of these criteria. A complete optical multi-color afterglow light curve of XRF020903 obtained from archived data and photometric results in literature showed an achromatic brightening around 0.7 days. An off-axis jet model with a large observing angle (0.21 rad, which is twice the jet opening half-angle, $\\theta_{jet}$) can naturally describe the achromatic brightening and the prompt X-ray spectral properties. This result indicates the existence of off-axis orphan GRB afterglow light curves. Events with a larger viewing angle ($>\\sim2\\theta_{jet}$) could be discovered using an 8-m ...

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

    SciTech Connect (OSTI)

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

    2013-07-01T23:59:59.000Z

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

  12. Test plan for the 34 meter vertical axis wind turbine test bed located at Bushland, Texas

    SciTech Connect (OSTI)

    Stephenson, W.A.

    1986-12-01T23:59:59.000Z

    A plan is presented for the testing and evaluation of a new 500 kw vertical axis wind turbine test bed. The plan starts with the initial measurements made during construction, proceeds through evaluation of the design, the development of control methods, and finally to the test bed phase where new concepts are evaluated and in-depth studies are performed.

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

    E-Print Network [OSTI]

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

    2005-01-01T23:59:59.000Z

    , but not pregnant, rats. However, naloxone infused directly into the PVN increased noradrenaline release after IL-1{beta} in pregnant rats. Thus, the HPA axis responses to immune signals are suppressed in pregnancy at the level of pPVN CRH neurons through an opioid...

  14. Axis control using model predictive control: identification and friction effect reduction

    E-Print Network [OSTI]

    Boyer, Edmond

    Axis control using model predictive control: identification and friction effect reduction Pedro this numerical model is used to synthetize a predictive GPC controller reducing the impact of the friction Rodriguez-Ayerbe, Didier Dumur, Sylvain Lavernhe** * SUPELEC- E3S, Automatic Control, 3 rue Joliot Curie

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

    E-Print Network [OSTI]

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

  16. Towards Finding Relevant Information Graphics: Identifying the Independent and Dependent Axis from User-written Queries

    E-Print Network [OSTI]

    Carberry, Sandra

    Towards Finding Relevant Information Graphics: Identifying the Independent and Dependent Axis from of Computer and Information Science University of Delaware Newark, DE 19716 Abstract Information graphics (non-pictorial graphics such as bar charts and line graphs) contain a great deal of knowl- edge. Information retrieval

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

    DOE Patents [OSTI]

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

    2013-09-10T23:59:59.000Z

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

  18. Microstructure dependence of the c-axis critical current density in second-generation YBCO tapes.

    SciTech Connect (OSTI)

    Jia, Y.; Welp, U.; Crabtree, G. W.; Kwok, W. K.; Malozemoff, A. P.; Rupich, M. W.; Fleshler, S.; Clem, J. R. (Materials Science Division); (American Superconductor Corp.); (Ames Lab.); (Iowa State Univ.)

    2011-10-01T23:59:59.000Z

    C-axis current flow in high temperature superconductor (HTS) tape-shaped wires arises in configurations where the local wire axis is not perpendicular to the local magnetic field, such as in power cables with helically wound HTS tapes. The c-axis critical current density J{sub c}{sup c} has been recently found to be orders of magnitude lower than the ab-plane critical current density J{sub c}{sup ab}. Here we report on J{sub c}{sup c} (77 K, sf) values of various YBa{sub 2}Cu{sub 3}O{sub 7}-based (YBCO) tapes with different microstructures. Our results show that the value of J{sub c}{sup c} (77 K, sf) decreases significantly with increasing concentration of ab-plane stacking faults in YBCO thin films and that the critical current anisotropy {gamma} = J{sub c}{sup ab}/J{sub c}{sup c} can reach values as high as 2070, implying that in the highest-anisotropy tape, {approx}20% of the tape width carries c-axis current in a helically wound power cable.

  19. Microstructure dependence of the c-axis critical current density in second generation YBCO tapes

    SciTech Connect (OSTI)

    Jia, Y. Welp, U. Crabtree, G.W.; Kwok, W.K.; Malozemoff, A.P.; Rupich, M.W.; Fleshler, S.; Clem, J.R.

    2011-10-31T23:59:59.000Z

    C-axis current flow in high temperature superconductor (HTS) tape-shaped wires arises in configurations where the local wire axis is not perpendicular to the local magnetic field, such as in power cables with helically wound HTS tapes. The c-axis critical current density J{sub c}{sup c} has been recently found to be orders of magnitude lower than the ab-plane critical current density J{sub c}{sup ab}. Here we report on J{sub c}{sup c} (77 K, sf) values of various YBa{sub 2}Cu{sub 3}O{sub 7}-based (YBCO) tapes with different microstructures. Our results show that the value of J{sub c}{sup c} (77 K, sf) decreases significantly with increasing concentration of ab-plane stacking faults in YBCO thin films and that the critical current anisotropy {gamma} = J{sub c}{sup ab}/J{sub c}{sup c} can reach values as high as 2070, implying that in the highest-anisotropy tape, {approx}20% of the tape width carries c-axis current in a helically wound power cable.

  20. Off-axis directional acoustic wave beaming control by an asymmetric rubber heterostructures film

    E-Print Network [OSTI]

    Wang, Ji

    Off-axis directional acoustic wave beaming control by an asymmetric rubber heterostructures film rubber heterostructures film deposited on steel plate in water. The rubber heterostructures film at left side and right side are constructed by alternately stacking rubber-1 and rubber-2 film periodically

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

    E-Print Network [OSTI]

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

    1993-08-09T23:59:59.000Z

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

  2. PID Controller Synthesis with Shifted Axis Pole Assignment for a Class of MIMO Systems

    E-Print Network [OSTI]

    Gundes, A. N.

    PID Controller Synthesis with Shifted Axis Pole Assignment for a Class of MIMO Systems A. N. G-output plants, a systematic synthesis is developed for stabilization using Proportional+Integral+Derivative (PID-zero of the plant. Plant classes that admit PID controllers with this property include stable and unstable multi

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

    E-Print Network [OSTI]

    Johnson, Peter D.

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

  4. On some sharp spectral inequalities for Schrödinger operators on semi-axis

    E-Print Network [OSTI]

    Pavel Exner; Ari Laptev; Muhammad Usman

    2013-01-21T23:59:59.000Z

    In this paper we obtain sharp Lieb-Thirring inequalities for a Schr\\"odinger operator on semi-axis with a matrix potential and show how they can be used to other related problems. Among them are spectral inequalities on star graphs and spectral inequalities for Schr\\"odinger operators on half-spaces with Robin boundary conditions.

  5. Dual Axis Radiographic Hydrodynamic Test Facility mitigation action plan. Annual report for 1998

    SciTech Connect (OSTI)

    Haagenstad, T.

    1999-01-15T23:59:59.000Z

    This Mitigation Action Plan Annual Report (MAPAR) has been prepared as part of implementing the Dual Axis Radiographic Hydrodynamic Test Facility (DARHT) Mitigation Action Plan (MAP) to protect workers, soils, water, and biotic and cultural resources in and around the facility.

  6. 1-and 2-Axis Magnetic Sensors HMC1001/1002/1021/1022

    E-Print Network [OSTI]

    Kleinfeld, David

    1- and 2-Axis Magnetic Sensors HMC1001/1002/1021/1022 The Honeywell HMC100x and HMC102x magnetic and HMC102x sensors utilize Honeywell's Anisotropic Magnetoresistive (AMR) technology that provides-gauss to 6 gauss. Honeywell's Magnetic Sensors are among the most sensitive and reliable low-field sensors

  7. Are the TRACE-P measurements representative of the western Pacific during March 2001?

    E-Print Network [OSTI]

    2004-01-01T23:59:59.000Z

    TRACE-P measurements representative of the western PacificTHE TRACE- P MEASUREMENTS REPRESENTATIVE? Pierce, R. B. , etTRACE-P measurements representative of the western Pacific

  8. Representative sampling using single-pulse laser ablation with inductively coupled plasma mass spectroscopy

    E-Print Network [OSTI]

    Liu, Haichen; Mao, Xianglei; Russo, Richard E.

    2001-01-01T23:59:59.000Z

    U also achieved a representative value at high irradiance.Representative sampling using single-pulse laser ablationvalue close to the representative level. Segregation during

  9. Do women represent women? : gender and policy in Argentina and Mexico

    E-Print Network [OSTI]

    Piscopo, Jennifer M.

    2011-01-01T23:59:59.000Z

    Differences in the Representative and Policymakingaction law and their own representative mandate. Interview,States House of Representatives. ? Policy Studies Journal

  10. Conservationism is not Conservatism: Do Interest Group Endorsements Help Voters Hold Representatives Accountable?

    E-Print Network [OSTI]

    Kaufman, Aaron

    2013-01-01T23:59:59.000Z

    information about the representative's position on theHelp Voters Hold Representatives Accountable? ” Aaronlearn the positions their representatives take on key issue.

  11. Acceptance of human papillomavirus vaccination among Californian parents of daughters: A representative statewide analysis

    E-Print Network [OSTI]

    Constantine, Norman A.; Jerman, Petra

    2007-01-01T23:59:59.000Z

    parents of daughters: A representative statewide analysis.Parents of Daughters: A Representative Statewide AnalysisResistance, But Still Representative. Available at: http://

  12. Voter competency, information, and campaign effects in representative and direct democracy

    E-Print Network [OSTI]

    Burnett, Craig Michael

    2010-01-01T23:59:59.000Z

    and Campaign Effects in Representative and Direct Democracyand Campaign Effects in Representative and Direct Democracyand make decisions in representative and direct democracy.

  13. China’s Military Representatives: Striving Toward Professional Contracting and Procurement

    E-Print Network [OSTI]

    Puska, Susan M; McReynolds, Joe; Geary, Debra

    2011-01-01T23:59:59.000Z

    di- rection. Military representative reform could raise2011 China’s Military Representatives: Striving Towardreforms is the Military Representative Office (MRO) system

  14. Demographic and Psychological Predictors of Parent–Adolescent Communication About Sex: A Representative Statewide Analysis

    E-Print Network [OSTI]

    Jerman, Petra; Constantine, Norman A.

    2010-01-01T23:59:59.000Z

    here are not precisely representative of the full populationCommunication About Sex: A Representative Statewide Analysismore studies with representative samples are needed to

  15. Representing cognitive activities and errors in HRA trees

    SciTech Connect (OSTI)

    Gertman, D.I.

    1992-01-01T23:59:59.000Z

    A graphic representation method is presented herein for adapting an existing technology--human reliability analysis (HRA) event trees, used to support event sequence logic structures and calculations--to include a representation of the underlying cognitive activity and corresponding errors associated with human performance. The analyst is presented with three potential means of representing human activity: the NUREG/CR-1278 HRA event tree approach; the skill-, rule- and knowledge-based paradigm; and the slips, lapses, and mistakes paradigm. The above approaches for representing human activity are integrated in order to produce an enriched HRA event tree -- the cognitive event tree system (COGENT)-- which, in turn, can be used to increase the analyst's understanding of the basic behavioral mechanisms underlying human error and the representation of that error in probabilistic risk assessment. Issues pertaining to the implementation of COGENT are also discussed.

  16. Representing cognitive activities and errors in HRA trees

    SciTech Connect (OSTI)

    Gertman, D.I.

    1992-05-01T23:59:59.000Z

    A graphic representation method is presented herein for adapting an existing technology--human reliability analysis (HRA) event trees, used to support event sequence logic structures and calculations--to include a representation of the underlying cognitive activity and corresponding errors associated with human performance. The analyst is presented with three potential means of representing human activity: the NUREG/CR-1278 HRA event tree approach; the skill-, rule- and knowledge-based paradigm; and the slips, lapses, and mistakes paradigm. The above approaches for representing human activity are integrated in order to produce an enriched HRA event tree -- the cognitive event tree system (COGENT)-- which, in turn, can be used to increase the analyst`s understanding of the basic behavioral mechanisms underlying human error and the representation of that error in probabilistic risk assessment. Issues pertaining to the implementation of COGENT are also discussed.

  17. Representing the Semantics of Geographic Information in Ontologies 

    E-Print Network [OSTI]

    Ou, Yang

    2007-08-15T23:59:59.000Z

    the semantics. This paper describes how to utilise ontologies to capture the semantics of geographic information and further presents a way to represent and store spatial data in a knowledge base within an ontology. By representing geographic information...Interoperability is a key concern in the field of Geographic Information Sciences for the sharing of geographic information and the integration of geospatial processes. Web service technology is a mainstream approach to distribute GIS functionality in the Web environment and provide syntactic interoperability for different processes, and ontologies have been considered as a significant technique to achieve interoperability on the semantic level. This paper describes how the mainstream Web technologies can be applied for interoperability of geospatial processes and implements the methodology with a use case of specific processes....

  18. Processes, data structures, and apparatuses for representing knowledge

    DOE Patents [OSTI]

    Hohimer, Ryan E. (West Richland, WA); Thomson, Judi R. (Guelph, CA); Harvey, William J. (Richland, WA); Paulson, Patrick R. (Pasco, WA); Whiting, Mark A. (Richland, WA); Tratz, Stephen C. (Richland, WA); Chappell, Alan R. (Seattle, WA); Butner, R. Scott (Richland, WA)

    2011-09-20T23:59:59.000Z

    Processes, data structures, and apparatuses to represent knowledge are disclosed. The processes can comprise labeling elements in a knowledge signature according to concepts in an ontology and populating the elements with confidence values. The data structures can comprise knowledge signatures stored on computer-readable media. The knowledge signatures comprise a matrix structure having elements labeled according to concepts in an ontology, wherein the value of the element represents a confidence that the concept is present in an information space. The apparatus can comprise a knowledge representation unit having at least one ontology stored on a computer-readable medium, at least one data-receiving device, and a processor configured to generate knowledge signatures by comparing datasets obtained by the data-receiving devices to the ontologies.

  19. Antitrust Evaluation of Horizontal Mergers: An Economic Alternative to Market Definition

    E-Print Network [OSTI]

    Sadoulet, Elisabeth

    Antitrust Evaluation of Horizontal Mergers: An Economic Alternative to Market Definition 25 between the two firm's products. We argue that our approach is well grounded in economics, workable, Economics and Regulation at Northwestern University and the FTC First Annual Microeconomic Conference

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

    DOE Patents [OSTI]

    Siminovitch, M.

    1998-02-10T23:59:59.000Z

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

  1. A Comparison of Vehicle Speed at Day and Night Rural Horizontal Curves

    E-Print Network [OSTI]

    Quaium, Ridwan B.

    2010-07-14T23:59:59.000Z

    This thesis documents the linear mixed model developed for vehicle speed along two-lane two-way rural horizontal curves in the outside lane. Speed data at each curve was collected at four points along the curve including the midpoint of the curve...

  2. The Use of Horizontal Wells in Gas Production from Hydrate Accumulations

    SciTech Connect (OSTI)

    Reagan, Matthew; Moridis, George J.; Reagan, Matthew T.; Zhang, Keni

    2008-04-15T23:59:59.000Z

    The amounts of hydrocarbon gases trapped in natural hydrate accumulations are enormous, leading to a recent interest in the evaluation of their potential as an energy source. Earlier studies have demonstrated that large volumes of gas can be readily produced at high rates for long times from gas hydrate accumulations by means of depressurization-induced dissociation, using conventional technology and vertical wells. The results of this numerical study indicate that the use of horizontal wells does not confer any practical advantages to gas production from Class 1 deposits. This is because of the large disparity in permeabilities between the hydrate layer (HL) and the underlying free gas zone, leading to a hydrate dissociation that proceeds in a horizontally dominant direction and is uniform along the length of the reservoir. When horizontal wells are placed near the base of the HL in Class 2 deposits, the delay in the evolution of a significant gas production rate outweighs their advantages, which include higher rates and the prevention of flow obstruction problems that often hamper the performance of vertical wells. Conversely, placement of a horizontal well near to top of the HL can lead to dramatic increases in gas production from Class 2 and Class 3 deposits over the corresponding production from vertical wells.

  3. ON THE CONTRIBUTION OF THE HORIZONTAL SEA-BED DISPLACEMENTS INTO THE TSUNAMI GENERATION PROCESS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ON THE CONTRIBUTION OF THE HORIZONTAL SEA-BED DISPLACEMENTS INTO THE TSUNAMI GENERATION PROCESS for the generation of tsunamis is the deformation of the bot- tom of the ocean caused by an underwater earthquake attention to the evolution of kinetic and potential ener- gies of the resulting wave while the contribution

  4. CEBAF UPGRADE CRYOMODULE COMPONENT TESTING IN THE HORIZONTAL TEST BED (HTB)*

    E-Print Network [OSTI]

    CEBAF UPGRADE CRYOMODULE COMPONENT TESTING IN THE HORIZONTAL TEST BED (HTB)* I. E. Campisi , B The planned upgrade of the CEBAF electron accelerator includes the development of an improved cryomodule. Several components differ substantially from the original CEBAF cryomodule; these include: the new 7-cell

  5. Modeling Performance of Horizontal Wells with Multiple Fractures in Tight Gas Reservoirs

    E-Print Network [OSTI]

    Dong, Guangwei

    2011-02-22T23:59:59.000Z

    of the well system is determined by three aspects: the inflow from the reservoir to the fracture, the flow from the fracture to the wellbore, and the inflow from the reservoir to the horizontal wellbore. These three aspects influence each other and combined...

  6. 1 Spreading and convective dissolution of carbon dioxide in vertically 2 confined, horizontal aquifers

    E-Print Network [OSTI]

    Neufeld, Jerome A.

    1 Spreading and convective dissolution of carbon dioxide in vertically 2 confined, horizontal] Injection of carbon dioxide (CO2) into saline aquifers is a promising tool for reducing 6 anthropogenic CO2 emissions. At reservoir conditions, the injected CO2 is buoyant relative 7 to the ambient groundwater

  7. Spreading and convective dissolution of carbon dioxide in vertically confined, horizontal aquifers

    E-Print Network [OSTI]

    Huppert, Herbert

    Spreading and convective dissolution of carbon dioxide in vertically confined, horizontal aquifers of carbon dioxide (CO2) into saline aquifers is a promising tool for reducing anthropogenic CO2 emissions. At reservoir conditions, the injected CO2 is buoyant relative to the ambient groundwater. The buoyant plume

  8. Aquitard control of stream-aquifer interaction and flow to a horizontal well in coastal aquifers

    E-Print Network [OSTI]

    Sun, Dongmin

    2007-04-25T23:59:59.000Z

    This dissertation is composed of three parts of major contributions: In Chapter II, we developed a new conceptual model and derived a new semi-analytical model for flow to a horizontal well beneath a water reservoir. Instead of treating the leakage...

  9. Under consideration for publication in J. Fluid Mech. 1 Stressed horizontal convection

    E-Print Network [OSTI]

    Young, William R.

    in the Gullmarfjord on the west coast of Sweden. When the wind swept over the fjord, the water at the surface flowed to the suggestion of Munk & Wunsch (1998) that mechanical energy sources -- such as the wind stress observed by Sandstr¨om (1908) -- are necessary to sustain the ocean circulation. Recent work on horizontal convection

  10. Horizontal Heat Exchanger Design and Analysis for Passive Heat Removal Systems

    SciTech Connect (OSTI)

    Vierow, Karen

    2005-08-29T23:59:59.000Z

    This report describes a three-year project to investigate the major factors of horizontal heat exchanger performance in passive containment heat removal from a light water reactor following a design basis accident LOCA (Loss of Coolant Accident). The heat exchanger studied in this work may be used in advanced and innovative reactors, in which passive heat removal systems are adopted to improve safety and reliability The application of horizontal tube-bundle condensers to passive containment heat removal is new. In order to show the feasibility of horizontal heat exchangers for passive containment cooling, the following aspects were investigated: 1. the condensation heat transfer characteristics when the incoming fluid contains noncondensable gases 2. the effectiveness of condensate draining in the horizontal orientation 3. the conditions that may lead to unstable condenser operation or highly degraded performance 4. multi-tube behavior with the associated secondary-side effects This project consisted of two experimental investigations and analytical model development for incorporation into industry safety codes such as TRAC and RELAP. A physical understanding of the flow and heat transfer phenomena was obtained and reflected in the analysis models. Two gradute students (one funded by the program) and seven undergraduate students obtained research experience as a part of this program.

  11. A Comparison of Vehicle Speed at Day and Night Rural Horizontal Curves 

    E-Print Network [OSTI]

    Quaium, Ridwan B.

    2010-07-14T23:59:59.000Z

    This thesis documents the linear mixed model developed for vehicle speed along two-lane two-way rural horizontal curves in the outside lane. Speed data at each curve was collected at four points along the curve including the midpoint of the curve...

  12. Hydraulic Fracturing and Horizontal Gas Well Drilling Reference List Updated December 7, 2011

    E-Print Network [OSTI]

    Manning, Sturt

    Hydraulic Fracturing and Horizontal Gas Well Drilling Reference List Updated December 7, 2011. References to popular press and advocacy groups, both of which are numerous and described in detail elsewhere of Hydraulic Fracturing in the Shale Plays (2010). Tudor Pickering Holt & Co with Reservoir Research Partners

  13. Low-drag electrical contact arrangement for maintaining continuity between horizontally movable members

    DOE Patents [OSTI]

    Brown, R. Jack (Clinton, TN); Gerth, Howard L. (Knoxville, TN); Robinson, Samuel C. (Clinton, TN)

    1982-01-01T23:59:59.000Z

    This invention is a low-drag electrical contact arrangement for establishing continuity between upper and lower spaced members which are subject to relative horizontal movement. In one aspect, the invention comprises an electrical commutating arrangement which includes a horizontally disposed linear electrical commutator. A horizontally movable electrically conductive pedestal is positioned below the commutator and defines a clearance therewith. The pedestal is formed with a cavity confronting the commutator. In the cavity is a bead of electrical conductive liquid, the bead being characterized by an upwardly convex meniscus portion which extends across the clearance and contacts the commutator. The surface tension of the bead is sufficient to maintain the bead intact when the commutator and pedestal are displaced horizontally at speeds from zero to at least twelve inches a minute. This arrangement provides a significant advance in highly precise machining processes, such as diamond-turning, where precision is limited by the drag imposed by conventional commutators of the carbon-brush type.

  14. Low-drag electrical-contact arrangement for maintaining continuity between horizontally movable members

    DOE Patents [OSTI]

    Brown, R.J.; Gerth, H.L.; Robinson, S.C.

    1981-01-23T23:59:59.000Z

    This invention is a low-drag electrical contact arrangement for establishing continuity between upper and lower spaced members which are subject to relative horizontal movement. In one aspect, the invention comprises an electrical commutating arrangement which includes a horizontally disposed linear electrical commutator. A horizontally movable electrically conductive pedestal is positioned below the commutator and defines a clearance therewith. The pedestal is formed with a cavity confronting the commutator. In the cavity is a bead of electrical conductive liquid, the bead being characterized by an upwardly convex meniscus portion which extends across the clearance and contacts the commutator. The surface tension of the bead is sufficient to maintain the bead intact when the commutator and pedestal are displaced horizontally at speeds from zero to at least twelve inches a minute. This arrangement provides a significant advance in highly precise machining processes, such as diamond-turning, where precision is limited by the drag imposed by conventional commutators of the carbon-brush type.

  15. Alba Field cased-hole horizontal gravel pack: A team approach to design

    SciTech Connect (OSTI)

    Alexander, K. [Chevron U.K. Ltd., London (United Kingdom); Winton, S. [Baker Hughes INTEQ, Aberdeen (United Kingdom); Price-Smith, C. [Dowell Schlumberger, Aberdeen (United Kingdom)

    1996-03-01T23:59:59.000Z

    A 700-ft cased-hole horizontal well was gravel packed and completed in the Alba Field, central North Sea. The completion incorporated a number of new technologies adopted for a horizontal cased-hole completion, including both equipment and fluids. The zone was completed in two stages using a horizontal stack-pack approach. Perforation packing was optimized by performing a staged acid prepack with the guns in the hole using a low-density synthetic gravel substitute in a shear thinning carrier fluid. This was a world-first achievement at a cased-hole gravel pack using the stack-pack approach in a horizontal well. A solids-free fluid-loss control material was evaluated and chosen for the high-permeability Alba sands (3 darcies). Extensive lab testing was performed to ensure minimal damage from various fluids. A 30-ft physical model was used to optimize annular pack efficiency. A gravel placement computer simulation was used to design pump rate, sand concentration, and gel loading to optimize annular and perforation-pack efficiency.

  16. Asymmetric mixing transport: a horizontal transport mechanism for sinking plankton and sediment in tidal flows

    E-Print Network [OSTI]

    Pringle, James "Jamie"

    on the flood tide creates enhanced vertical mixing, and resuspension of sinking particles higher into the water retards the tidal flow near the bottom, this leads to a net horizontal transport toward the less]. To a large extent these larvae are at the mercy of the prevailing currents, often leading to a strong

  17. Productivity and injectivity of horizontal wells. Annual report, March 10, 1996--March 9, 1997

    SciTech Connect (OSTI)

    Aziz, K.; Hewett, T.A.; Arbabi, S.; Smith, M.

    1997-06-01T23:59:59.000Z

    Progress is reported on the following tasks: advanced modeling of horizontal wells; heterogeneous effects of reservoirs; development of improved methods for calculating multi-phase pressure drops within the wellbore; pseudo-functions; development of multi-well models;testing of HW models with field examples; enhanced oil recovery applications; and application studies and their optimization.

  18. 3.4 SIMULATED HORIZONTAL WELL PERFORMANCE IN THE NATURALLY FRACTURED SPRABERRY TREND AREA

    E-Print Network [OSTI]

    Schechter, David S.

    Waterflood Pilot was performed using commercial VIP and ECLIPSE simulators. A pilot model was developed using of performance between horizontal and vertical wells with different average reservoir pressures. (2) (Guevara, 1988). The individual beds rarely exceed 15 ft in thickness. Reservoir characterization

  19. THE DYNAMIC EVOLUTION OF TWISTED MAGNETIC FLUX TUBES IN A THREE-DIMENSIONAL CONVECTING FLOW. I. UNIFORMLY BUOYANT HORIZONTAL TUBES

    E-Print Network [OSTI]

    Abbett, Bill

    THE DYNAMIC EVOLUTION OF TWISTED MAGNETIC FLUX TUBES IN A THREE-DIMENSIONAL CONVECTING FLOW. I. UNIFORMLY BUOYANT HORIZONTAL TUBES Y. Fan High Altitude Observatory, National Center for Atmospheric-dimensional numerical simulations of the dynamic evolution of uniformly buoyant, twisted horizontal magnetic flux tubes

  20. Estimation of light penetration, and horizontal and vertical visibility in oceanic and coastal waters from surface reflectance

    E-Print Network [OSTI]

    Babin, Marcel

    Estimation of light penetration, and horizontal and vertical visibility in oceanic and coastal penetration, and horizontal and vertical visibility in oceanic and coastal waters from surface reflectance, J. The algorithms are found to be valid both in coastal and oceanic waters, and largely insensitive to regional

  1. Accepted Article Preview: Published ahead of advance online publication Transcription Factor/microRNA Axis Blocks Melanoma

    E-Print Network [OSTI]

    Shamir, Ron

    /microRNA Axis Blocks Melanoma Invasion Program by miR-211 Targeting NUAK1 Rachel E Bell, Mehdi Khaled, Dvir Levy, Transcription Factor/microRNA Axis Blocks Melanoma Invasion Program by miR-211 Targeting NUAK1 Blocks Melanoma Invasion Program by miR-211 Targeting NUAK1 Rachel E. Bella,h , Mehdi Khaledb

  2. Abstract--This paper describes the design and operation of the Multi-Axis Cartesian-based Arm Rehabilitation

    E-Print Network [OSTI]

    Abstract-- This paper describes the design and operation of the Multi-Axis Cartesian-based Arm on the development of the Multi-Axis Cartesian-based Arm Rehabilitation Machine (MACARM) ­ a new cable robot Rehabilitation Machine (MACARM), a new cable (wire) robot for upper limb rehabilitation. The prototype

  3. Defining And Characterizing Sample Representativeness For DWPF Melter Feed Samples

    SciTech Connect (OSTI)

    Shine, E. P.; Poirier, M. R.

    2013-10-29T23:59:59.000Z

    Representative sampling is important throughout the Defense Waste Processing Facility (DWPF) process, and the demonstrated success of the DWPF process to achieve glass product quality over the past two decades is a direct result of the quality of information obtained from the process. The objective of this report was to present sampling methods that the Savannah River Site (SRS) used to qualify waste being dispositioned at the DWPF. The goal was to emphasize the methodology, not a list of outcomes from those studies. This methodology includes proven methods for taking representative samples, the use of controlled analytical methods, and data interpretation and reporting that considers the uncertainty of all error sources. Numerous sampling studies were conducted during the development of the DWPF process and still continue to be performed in order to evaluate options for process improvement. Study designs were based on use of statistical tools applicable to the determination of uncertainties associated with the data needs. Successful designs are apt to be repeated, so this report chose only to include prototypic case studies that typify the characteristics of frequently used designs. Case studies have been presented for studying in-tank homogeneity, evaluating the suitability of sampler systems, determining factors that affect mixing and sampling, comparing the final waste glass product chemical composition and durability to that of the glass pour stream sample and other samples from process vessels, and assessing the uniformity of the chemical composition in the waste glass product. Many of these studies efficiently addressed more than one of these areas of concern associated with demonstrating sample representativeness and provide examples of statistical tools in use for DWPF. The time when many of these designs were implemented was in an age when the sampling ideas of Pierre Gy were not as widespread as they are today. Nonetheless, the engineers and statisticians used carefully thought out designs that systematically and economically provided plans for data collection from the DWPF process. Key shared features of the sampling designs used at DWPF and the Gy sampling methodology were the specification of a standard for sample representativeness, an investigation that produced data from the process to study the sampling function, and a decision framework used to assess whether the specification was met based on the data. Without going into detail with regard to the seven errors identified by Pierre Gy, as excellent summaries are readily available such as Pitard [1989] and Smith [2001], SRS engineers understood, for example, that samplers can be biased (Gy?s extraction error), and developed plans to mitigate those biases. Experiments that compared installed samplers with more representative samples obtained directly from the tank may not have resulted in systematically partitioning sampling errors into the now well-known error categories of Gy, but did provide overall information on the suitability of sampling systems. Most of the designs in this report are related to the DWPF vessels, not the large SRS Tank Farm tanks. Samples from the DWPF Slurry Mix Evaporator (SME), which contains the feed to the DWPF melter, are characterized using standardized analytical methods with known uncertainty. The analytical error is combined with the established error from sampling and processing in DWPF to determine the melter feed composition. This composition is used with the known uncertainty of the models in the Product Composition Control System (PCCS) to ensure that the wasteform that is produced is comfortably within the acceptable processing and product performance region. Having the advantage of many years of processing that meets the waste glass product acceptance criteria, the DWPF process has provided a considerable amount of data about itself in addition to the data from many special studies. Demonstrating representative sampling directly from the large Tank Farm tanks is a difficult, if not unsolvable enterprise due to li

  4. Facility Representative of the Year Award | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport in RepresentativeDepartment of Energy Score Maturity Value TargetFacility

  5. Magnetic axis safety factor of finite $\\beta$ spheromaks and transition from spheromaks to toroidal magnetic bubbles

    E-Print Network [OSTI]

    Bellan, Paul M

    2015-01-01T23:59:59.000Z

    The value of the safety factor on the magnetic axis of a finite-beta spheromak is shown to be a function of beta in contrast to what was used in P. M. Bellan, Phys. Plasmas 9, 3050 (2002); this dependence on beta substantially reduces the gradient of the safety factor compared to the previous calculation. The method for generating finite-beta spheromak equilibria is extended to generate equilibria describing toroidal magnetic "bubbles" where the hydrodynamic pressure on the magnetic axis is less than on the toroid surface. This "anti-confinement" configuration can be considered an equilibrium with an inverted beta profile and is relevant to interplanetary magnetic clouds as these clouds have lower hydrodynamic pressure in their interior than on their surface.

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

    SciTech Connect (OSTI)

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

    2013-12-15T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

    Riley, Daniel M.; Hansen, Clifford W.

    2014-04-01T23:59:59.000Z

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

  8. Axi-symmetrical flow reactor for .sup.196 Hg photochemical enrichment

    DOE Patents [OSTI]

    Grossman, Mark W. (Belmont, MA)

    1991-01-01T23:59:59.000Z

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

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

    DOE Patents [OSTI]

    Grossman, M.W.

    1991-04-30T23:59:59.000Z

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

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

    DOE Patents [OSTI]

    Reiman, A.; Boozer, A.

    1984-10-31T23:59:59.000Z

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

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

    DOE Patents [OSTI]

    Reiman, Allan (Princeton, NJ); Boozer, Allen (Rocky Hill, NJ)

    1987-01-01T23:59:59.000Z

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

  12. Anais XI SBSR, Belo Horizonte, Brasil, 05 -10 abril 2003, INPE, p. 2193 -2200. MAPSAR: A NEW L-BAND SPACEBORNE SAR MISSION FOR ASSESSMENT

    E-Print Network [OSTI]

    Domingues, Margarete Oliveira

    Anais XI SBSR, Belo Horizonte, Brasil, 05 - 10 abril 2003, INPE, p. 2193 - 2200. 2193 MAPSAR: A NEW the 9 7 38 4 #12;Anais XI SBSR, Belo Horizonte, Brasil, 05 - 10 abril 2003, INPE, p. 2193 - 2200. 2194

  13. Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance

    SciTech Connect (OSTI)

    Kelkar, Mohan; Liner, Chris; Kerr, Dennis

    1999-10-15T23:59:59.000Z

    This final report describes the progress during the six year of the project on ''Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance.'' This report is funded under the Department of Energy's (DOE's) Class I program which is targeted towards improving the reservoir performance of mature oil fields located in fluvially-dominated deltaic deposits. The project involves using an integrated approach to characterize the reservoir followed by drilling of horizontal injection wells to improve production performance. The project was divided into two budget periods. In the first budget period, many modern technologies were used to develop a detailed reservoir management plan; whereas, in the second budget period, conventional data was used to develop a reservoir management plan. The idea was to determine the cost effectiveness of various technologies in improving the performance of mature oil fields.

  14. Roll Wave Effects on Annular Condensing Heat Transfer in Horizontal PCCS Condenser Tube

    SciTech Connect (OSTI)

    Masaya Kondo; Hideo Nakamura; Yoshinari Anoda [Japan Atomic Energy Research Institute, Tokai-mura 319-1195 (Japan); Sadanori Saishu; Hiroyuki Obata; Rumi Shimada [Japan Atomic Power Company (Japan); Shinichi Kawamura [Tokyo Electric Power Company, Incorporated, 1-3, Uchisaiwai-cho 1-chome, Chiyoda-ku, Tokyo, 1008560 (Japan)

    2002-07-01T23:59:59.000Z

    A horizontal in-tube condensation heat exchanger is under investigation to be used for a passive containment cooling system (PCCS) of a next generation-type BWR. The flow conditions in the horizontal condenser tube were observed both visually and by local void fraction fluctuation. The observed flow regimes at a rated condition were annular flow at the tube inlet, and turned gradually into wavy flow and smooth stratified flow along the length of the tube. It was found further that frequency of the roll waves that appear on the liquid film in the annular flow is closely related to the measured local condensation heat transfer coefficient. Based on the flow observation, the roll wave frequency and measured condensation heat transfer coefficient, a model is proposed which predicts the condensation heat transfer coefficient particularly for annular flows around the tube inlet region. The proposed heat transfer model predicts well the influences of pressure, local gas-phase velocity and film thickness. (authors)

  15. Experimental evaluation of vertically versus horizontally split yokes for SSC (Superconducting Super Collider) dipole magnets

    SciTech Connect (OSTI)

    Strait, J.; Coulter, K.; Jaffery, T.; Kerby, J.; Koska, W.; Lamm, M.J.

    1990-05-03T23:59:59.000Z

    The yoke in SSC dipole magnets provides mechanical support to the collared coil as well as serving as a magnetic element. The yoke and skin are used to increase the coil prestress and reduce collar deflections under excitation. Yokes split on the vertical or horizontal mid-plane offer different advantages in meeting these objectives. To evaluate the relative merits of the two configuration a 1.8 m model dipole was assembled and tested first with horizontally split and then with vertically split yoke laminations. The magnet was extensively instrumented to measure azimuthal and axial stresses in the coil and the cold mass skin resulting from cooldown and excitation. Mechanical behavior of this magnet with each configuration is compared with that of other long and short models and with calculations. 13 refs., 5 figs.

  16. Horizontal well site evaluations in eastern Ohio, eastern Colorado, and western Texas

    SciTech Connect (OSTI)

    Mroz, T.H. (EG and G Washington Analytical Services Center, Inc., Morgantown, WV (United States)); Schuller, W.A. (EG and G Washington Analytical Services Center, Inc., Morgantown, WV (United States))

    1992-01-01T23:59:59.000Z

    To increase the knowledge of horizontal drilling in lower permeability reservoirs, US DOE/METC is presently involved in the evaluation of horizontal well sites in Mahoning Country, Ohio; Yuma Country, Colorado; and Maverick County, Texas. The sites differ in reservoir lithology and tectonic settings: Medina Sandstone, Niobrara Chalk, and Glen Rose carbonates, respectively. A suite of data for each site was compiled to include well logs, production data, pressure data, and seismic sections. These data were required as input parameters to two-and three-dimensional geologic models used for characterizing each reservoir. Results obtained from the models will be used to locate and design the wellbore geometry at each site. The primary objective of this study is to optimize production by designing and orienting each wellbore to penetrate the maximum length of the main stratigraphic and naturally fractured pay within each target formation.

  17. Horizontal well site evaluations in eastern Ohio, eastern Colorado, and western Texas

    SciTech Connect (OSTI)

    Mroz, T.H. [EG and G Washington Analytical Services Center, Inc., Morgantown, WV (United States); Schuller, W.A. [EG and G Washington Analytical Services Center, Inc., Morgantown, WV (United States)

    1992-09-01T23:59:59.000Z

    To increase the knowledge of horizontal drilling in lower permeability reservoirs, US DOE/METC is presently involved in the evaluation of horizontal well sites in Mahoning Country, Ohio; Yuma Country, Colorado; and Maverick County, Texas. The sites differ in reservoir lithology and tectonic settings: Medina Sandstone, Niobrara Chalk, and Glen Rose carbonates, respectively. A suite of data for each site was compiled to include well logs, production data, pressure data, and seismic sections. These data were required as input parameters to two-and three-dimensional geologic models used for characterizing each reservoir. Results obtained from the models will be used to locate and design the wellbore geometry at each site. The primary objective of this study is to optimize production by designing and orienting each wellbore to penetrate the maximum length of the main stratigraphic and naturally fractured pay within each target formation.

  18. Detection of Inclined and Horizontal Showers in the Pierre Auger Observatory

    SciTech Connect (OSTI)

    Elewyck, V. van [Observatorio Pierre Auger, Av. San Martin Norte 304 (5613) Malarguee (Argentina)

    2006-01-06T23:59:59.000Z

    The Pierre Auger Observatory can detect with high efficiency the air showers induced by ultra-high energy cosmic rays incident at large zenith angles {theta} > 60 deg. We describe here the specific characteristics of inclined and horizontal showers, as well as the characteristics of their signal in the surface detector. We point out their relevance both to extend the potential of the detector, and in the context of the detection of high-energy cosmic neutrinos.

  19. Termination for a superconducting power transmission line including a horizontal cryogenic bushing

    DOE Patents [OSTI]

    Minati, Kurt F. (Northport, NY); Morgan, Gerry H. (Patchogue, NY); McNerney, Andrew J. (Shoreham, NY); Schauer, Felix (Upton, NY)

    1984-01-01T23:59:59.000Z

    A termination for a superconducting power transmission line is disclosed which is comprised of a standard air entrance insulated vertical bushing with an elbow, a horizontal cryogenic bushing linking the pressurized cryogenic cable environment to the ambient temperature bushing and a stress cone which terminates the cable outer shield and transforms the large radial voltage gradient in the cable dielectric into a much lower radial voltage gradient in the high density helium coolant at the cold end of the cryogenic bushing.

  20. Horizontal cryogenic bushing for the termination of a superconducting power-transmission line

    DOE Patents [OSTI]

    Minati, K.F.; Morgan, G.H.; McNerney, A.J.; Schauer, F.

    1982-07-29T23:59:59.000Z

    A termination for a superconducting power transmission line is disclosed which is comprised of a standard air entrance insulated vertical bushing with an elbow, a horizontal cryogenic bushing linking the pressurized cryogenic cable environment to the ambient temperature bushing and a stress cone which terminated the cable outer shield and transforms the large radial voltage gradient in the cable dielectric into a much lower radial voltage gradient in the high density helium coolant at the cold end of the cryogenic bushing.

  1. Viability of horizontal directional drilling utilization for soil and groundwater remediation

    SciTech Connect (OSTI)

    Lowe, G.A. II [A and L Underground, Inc., Olathe, KS (United States); Watkins, W.S. [Baker Environmental, Inc., Cypress, TX (United States)

    1994-12-31T23:59:59.000Z

    Horizontal directional drilling (HDD) has now become the preferred method of installation for the majority of the pipeline and cable crossings installed in the United States. The advantages of installation are widely accepted and include better economics, shorter installation times and substantially reduced environmental impact compared to conventional dredging construction. The techniques for installation have been continually improved and downhole survey accuracy has become extremely accurate allowing for closer tolerance installations. In short, an industry that had its roots in the early 1970s has now grown to be an accepted standard for the construction industry. The utilization of horizontal wells for soil and groundwater remediation was a natural evolution from the original crossing applications utilizing HDD. Horizontal wells utilized in the proper locations could offer significant advantages over conventional vertical well applications. As technical personnel in the remediation field are increasingly exposed to the installation advantages, you will see many new applications being undertaken. The following are areas where HDD well installation are most cost effective and offer significant advantages to conventional vertical well installation and operation.

  2. The application of a new polymer mud to horizontal drilling in the Dagang Oilfield

    SciTech Connect (OSTI)

    Yan, J.; Jiang, G.; Zong, R.

    1995-10-01T23:59:59.000Z

    A new kind of polymer muds, which is generally referred to as the amphionic polymer mud, has been applied to the two horizontal well drilling for the first time in the Dagang Oilfield, located in east China. In this mud system, two amphionic polymers are usually used as the main additives, the one with high molecular weight is an inhibitive encapsuler and filtration control agent, and the other one with low molecular weight is a deflocculant. The amphionic polymer, just as its name, is defined as the polymer that both organic cations and anions simultaneously exist in their molecular chains. The design criteria, formulations and properties of this mud system are discussed. As a case history, the field performance of this new polymer mud in the different sections of the second well (by name Guan H-1, a medium-radius horizontal well) is also given. It was shown from the laboratory and field tests that the amphionic polymer mud not only has all the advantages of the polymer muds commonly used, but is able to overcome the disadvantages of those muds, indicated by its highly inhibitive character while maintaining excellent mud performances. For this reason, the major drilling problems for horizontal wells in the Dagang Oilfield, such as hole cleaning, wellbore stability, lubricity, lost circulation and formation damage, which were hardly solved by the use of other water-based muds, could be solved successfully by the use of the amphionic polymer mud at much lower cost than the oil-based mud.

  3. Integrated approach towards the application of horizontal wells to improve waterflooding performance. Annual report

    SciTech Connect (OSTI)

    Kelkar, M.; Liner, C.; Kerr, D.

    1995-05-01T23:59:59.000Z

    This annual report describes the progress during the second year of the project on Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance. This project is funded under the Department of Energy`s Class I program which is targeted towards improving the reservoir performance of mature oil fields located in fluvial-dominated deltaic deposits. The project involves an integrated approach to characterize the reservoir followed by the drilling of horizontal injection wells to improve production performance. The type of data we have integrated include cross bore hole seismic surveys, geological interpretation based on logs and cores, and engineering information. This report covers the second phase of the project which includes a detailed reservoir description of the field by integrating all the available information, followed by flow simulation of the Self Unit under various operating conditions. Based on an examination of the various operating parameters, we observed that the best possible solution to improve the Self Unit performance is to recomplete and stimulate most of the wells followed by an increase in the water injection rate. Drilling of horizontal injection well, although helpful in improving the performance, was not found to be economically feasible. The proposed reservoir management plan will be implemented shortly.

  4. Well completion report on installation of horizontal wells for in-situ remediation tests

    SciTech Connect (OSTI)

    Kaback, D.S.; Looney, B.B.; Corey, J.C.; Wright, L.M.

    1989-08-01T23:59:59.000Z

    A project to drill and install two horizontal vapor extraction/air-injection wells at the Savannah River Site (SRS), Aiken, South Carolina, was performed in September and October of 1988. This study was performed to test the feasibility of horizontal drilling technologies in unconsolidated sediments and to evaluate the effectiveness of in-situ air stripping of volatile organics from the ground water and unsaturated soils. A tremendous amount of knowledge was obtained during the drilling and installation of the two test wells. Factors of importance to be considered during design of another horizontal well drilling program follow. (1) Trips in and out of the borehole should be minimized to maintain hole stability. No reaming to enlarge the hole should be attempted. (2) Drilling fluid performance should be maximized by utilizing a low solids, low weight, moderate viscosity, high lubricity fluid. Interruption of drilling fluid circulation should be minimized. (3) Well materials should possess adequate flexibility to negotiate the curve. A flexible guide should be attached to the front of the well screen to guide the screen downhole. (4) Sands containing a minor amount of clay are recommended for completion targets, as better drilling control in the laterals was obtained in these sections.

  5. Method for explosive expansion toward horizontal free faces for forming an in situ oil shale retort

    DOE Patents [OSTI]

    Ricketts, Thomas E. (Bakersfield, CA)

    1980-01-01T23:59:59.000Z

    Formation is excavated from within a retort site in formation containing oil shale for forming a plurality of vertically spaced apart voids extending horizontally across different levels of the retort site, leaving a separate zone of unfragmented formation between each pair of adjacent voids. Explosive is placed in each zone, and such explosive is detonated in a single round for forming an in situ retort containing a fragmented permeable mass of formation particles containing oil shale. The same amount of formation is explosively expanded upwardly and downwardly toward each void. A horizontal void excavated at a production level has a smaller horizontal cross-sectional area than a void excavated at a lower level of the retort site immediately above the production level void. Explosive in a first group of vertical blast holes is detonated for explosively expanding formation downwardly toward the lower void, and explosive in a second group of vertical blast holes is detonated in the same round for explosively expanding formation upwardly toward the lower void and downwardly toward the production level void for forming a generally T-shaped bottom of the fragmented mass.

  6. Effect of inlet geometries and heating on the entrance and fully-developed friction factors in the laminar and transition regions of a horizontal tube

    E-Print Network [OSTI]

    Ghajar, Afshin J.

    developed regions of a horizontal tube under different flow regimes is presented. For this purpose, accurate in the laminar and transition regions of a horizontal tube Hou Kuan Tam a , Lap Mou Tam a,b , Afshin J. Ghajar c diameter horizontal circular straight tube with square-edged and re-entrant inlets under isothermal and non

  7. Flow boiling enhancement on a horizontal heater using carbon nanotube coatings N. Singh, V. Sathyamurthy, W. Peterson, J. Arendt, D. Banerjee *

    E-Print Network [OSTI]

    Banerjee, Debjyoti

    with embedded cartridge heaters and K-type thermocouples. De-ion- ized (DI) water was used as the test fluidFlow boiling enhancement on a horizontal heater using carbon nanotube coatings N. Singh, V flux on a horizontal heater that is heated from below. The horizontal heater consists of either a bare

  8. Simulating a Nationally Representative Housing Sample Using EnergyPlus

    SciTech Connect (OSTI)

    Hopkins, Asa S.; Lekov, Alex; Lutz, James; Rosenquist, Gregory; Gu, Lixing

    2011-03-04T23:59:59.000Z

    This report presents a new simulation tool under development at Lawrence Berkeley National Laboratory (LBNL). This tool uses EnergyPlus to simulate each single-family home in the Residential Energy Consumption Survey (RECS), and generates a calibrated, nationally representative set of simulated homes whose energy use is statistically indistinguishable from the energy use of the single-family homes in the RECS sample. This research builds upon earlier work by Ritchard et al. for the Gas Research Institute and Huang et al. for LBNL. A representative national sample allows us to evaluate the variance in energy use between individual homes, regions, or other subsamples; using this tool, we can also evaluate how that variance affects the impacts of potential policies. The RECS contains information regarding the construction and location of each sampled home, as well as its appliances and other energy-using equipment. We combined this data with the home simulation prototypes developed by Huang et al. to simulate homes that match the RECS sample wherever possible. Where data was not available, we used distributions, calibrated using the RECS energy use data. Each home was assigned a best-fit location for the purposes of weather and some construction characteristics. RECS provides some detail on the type and age of heating, ventilation, and air-conditioning (HVAC) equipment in each home; we developed EnergyPlus models capable of reproducing the variety of technologies and efficiencies represented in the national sample. This includes electric, gas, and oil furnaces, central and window air conditioners, central heat pumps, and baseboard heaters. We also developed a model of duct system performance, based on in-home measurements, and integrated this with fan performance to capture the energy use of single- and variable-speed furnace fans, as well as the interaction of duct and fan performance with the efficiency of heating and cooling equipment. Comparison with RECS revealed that EnergyPlus did not capture the heating-side behavior of heat pumps particularly accurately, and that our simple oil furnace and boiler models needed significant recalibration to fit with RECS. Simulating the full RECS sample on a single computer would take many hours, so we used the 'cloud computing' services provided by Amazon.com to simulate dozens of homes at once. This enabled us to simulate the full RECS sample, including multiple versions of each home to evaluate the impact of marginal changes, in less than 3 hours. Once the tool was calibrated, we were able to address several policy questions. We made a simple measurement of the heat replacement effect and showed that the net effect of heat replacement on primary energy use is likely to be less than 5%, relative to appliance-only measures of energy savings. Fuel switching could be significant, however. We also evaluated the national and regional impacts of a variety of 'overnight' changes in building characteristics or occupant behavior, including lighting, home insulation and sealing, HVAC system efficiency, and thermostat settings. For example, our model shows that the combination of increased home insulation and better sealed building shells could reduce residential natural gas use by 34.5% and electricity use by 6.5%, and a 1 degree rise in summer thermostat settings could save 2.1% of home electricity use. These results vary by region, and we present results for each U.S. Census division. We conclude by offering proposals for future work to improve the tool. Some proposed future work includes: comparing the simulated energy use data with the monthly RECS bill data; better capturing the variation in behavior between households, especially as it relates to occupancy and schedules; improving the characterization of recent construction and its regional variation; and extending the general framework of this simulation tool to capture multifamily housing units, such as apartment buildings.

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

    E-Print Network [OSTI]

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

    2010-01-01T23:59:59.000Z

    axis Wire EDM machine X. Cheng & Z. G. Wang & S. Kobayashi &Tool fabrication X. Cheng (*) : Z. G. Wang : K. Yamazaki

  10. Do Emergency Department Patients Receive a Pathological Diagnosis? A Nationally-Representative Sample

    E-Print Network [OSTI]

    Wen, Leana S.; Espinola, Janice A.; Kosowsky, Joshua M.; Camargo Jr, Carlos A.

    2015-01-01T23:59:59.000Z

    Diagnosis? A Nationally-Representative Sample Leana S. Wen,of a nationally-representative database of ED visits, manysubset of a nationally-representative database of ED visits

  11. Representing the influence of subgrid topography on hydrology

    SciTech Connect (OSTI)

    Leung, L.R.; Ghan, S.J.

    1993-10-01T23:59:59.000Z

    Estimates of the impact of global climate change on land surface hydrology require climate information on scales far smaller than those explicitly resolved by global climate models of today and the foreseeable future. To bridge the gap between what is required and what is resolved, we propose a subgrid-scale parameterization of the influence of topography on clouds, precipitation, and land surface hydrology. The parameterization represents subgrid variations in surface elevation in terms of discrete elevation classes. Separate cloud and surface processes are calculated for each elevation class. The simulated surface temperature, precipitation, snowpack, and soil moisture for each elevation class can then be distributed according to the spatial distribution of surface elevation within each grid cell. The scheme is being applied to the Pacific Northwest Laboratory`s climate version of the Penn State/NCAR Mesoscale Model. Validation is being addressed by driving the model with observed lateral boundary conditions for the Pacific Northwest and comparing with surface observations. Preliminary results from the simulation will be presented.

  12. Fluctuations, Correlation and Representative Elementary Volume (REV) in Granular Materials

    E-Print Network [OSTI]

    P. Evesque

    2005-06-15T23:59:59.000Z

    In general, the mechanics of granular matter is described using continuum mechanics approach; this requires to introduce the concepts of stress and strain, which are averaged quantities, so that this needs also to introduce the notion of representative elementary volume (REV) above which averaged quantities have some physical meaning. As local quantities fluctuate spatially in granular matter; a local measure of stress and strain shall exhibit fluctuations too, whose typical amplitude depends on the sampling size L. This paper discusses this problem and the causes for large scale correlation. The mean stress s applied to a plane surface of size L*L is calculated and its fluctuation amplitude Ds is found when local forces are not correlated; it is found that Ds/s scales as 1/L . It is shown also that large scale fluctuations of stress can always be interpreted as an inhomogeneous stress field and that static equilibrium modifies the mean stress applied to a rod (in 2d), even if it does not perturb the contact force distribution. This last result is compared to experiment, which indicates that the number N of contacts per rod (in 2d) is 2

  13. A representative sample of Be stars III: H band spectroscopy

    E-Print Network [OSTI]

    I. A. Steele; J. S. Clark

    2001-03-16T23:59:59.000Z

    We present H band (1.53 - 1.69 micron) spectra of 57 isolated Be stars of spectral types O9-B9 and luminosity classes III,IV & V. The HI Brackett (n-4) series is seen in emission from Br 11-18, and FeII emission is also apparent for a subset of those stars with HI emission. No emission from species with a higher excitation temperature, such as He II or CIII is seen, and no forbidden line emission is present. A subset of 12 stars show no evidence for emission from any species; these stars appear indistinguishable from normal B stars of a comparable spectral type. In general the line ratios constructed from the transitions in the range Br 11-18 do not fit case B recombination theory particularly well. Strong correlations between the line ratios with Br-gamma and spectral type are found. These results most likely represent systematic variations in the temperature and ionization of the circumstellar disc with spectral type. Weak correlations between the line widths and projected rotational velocity of the stars are observed; however no systematic trend for increasing line width through the Brackett series is observed.

  14. Examination of representative drum from 618-9 Burial Ground

    SciTech Connect (OSTI)

    Duncan, D.R. [Westinghouse Hanford Co., Richland, WA (United States); Bunnell, L.R. [Pacific Northwest Lab., Richland, WA (United States)

    1992-10-01T23:59:59.000Z

    The work described in this report was conducted in pursuance of Task E of the Pacific Northwest Laboratory Solid Waste Technology Support Program for Westinghouse Hanford Company. Task E calls for a determination of the corrosion rate of low-carbon steels under typical Hanford Site conditions. To meet this objective, Pacific Northwest Laboratory examined one intact drum that was judged to be representative of the largely intact drums excavated at the 618-9 Burial Ground located west of the 300 Area at the Hanford Site. Six samples were examined to characterize the drum, its composition, and its corrosion and corrosion products. The drum, which was found empty, was constructed of low-carbon steel. Its surface appeared relatively sound. The drum metal varied in thickness, but the minimum thickness in the samples was near 0.020 in. The corrosion corresponds to approximately 25 to 35 mils of metal loss, roughly a 1 mil/yr corrosion rate. Corrosion products were goethite and maghymite, expected products of iron buried in soil. Apparently, the drum leaked some time ago, but the cause of the leakage is unknown because records of the drums and their burial are limited. The drum was empty when found, and it is possible that it could have failed by pitting rather than by general corrosion. A pitting rate of about 3.5 mils/yr would have caused loss of drum integrity in the time since burial.

  15. Thermomechanical Actuator-Based Three-Axis Optical Scanner for High-Speed Two-Photon Endomicroscope Imaging

    E-Print Network [OSTI]

    Chen, Shih-Chi

    This paper presents the design and characterization of a three-axis thermomechanical actuator-based endoscopic scanner for obtaining ex vivo two-photon images. The scanner consisted of two sub-systems: 1) an optical system ...

  16. Study of Flow Regimes in Multiply-Fractured Horizontal Wells in Tight Gas and Shale Gas Reservoir Systems 

    E-Print Network [OSTI]

    Freeman, Craig M.

    2010-07-14T23:59:59.000Z

    Various analytical, semi-analytical, and empirical models have been proposed to characterize rate and pressure behavior as a function of time in tight/shale gas systems featuring a horizontal well with multiple hydraulic fractures. Despite a small...

  17. Study of Flow Regimes in Multiply-Fractured Horizontal Wells in Tight Gas and Shale Gas Reservoir Systems

    E-Print Network [OSTI]

    Freeman, Craig M.

    2010-07-14T23:59:59.000Z

    Various analytical, semi-analytical, and empirical models have been proposed to characterize rate and pressure behavior as a function of time in tight/shale gas systems featuring a horizontal well with multiple hydraulic fractures. Despite a small...

  18. Mesoscale Systems: weather associated with circulation systems of horizontal scales of 5 to 1,000 km

    E-Print Network [OSTI]

    Weber, Rodney

    Mesoscale Systems: weather associated with circulation systems of horizontal scales of 5 to 1 faster at night #12;Dispersion in Mesoscale Systems Mesoscale systems can have large effects on pollution

  19. 1 Ma 15200 Lesson 18 Section 1.7 I Representing an Inequality ...

    E-Print Network [OSTI]

    charlotb

    2011-02-22T23:59:59.000Z

    1. Ma 15200 Lesson 18 Section 1.7. I. Representing an Inequality. There are 3 ways to represent an inequality. (1) Using the inequality symbol (sometime.

  20. 1 Ma 15200 Lesson 18 Section 1.7 I Representing an Inequality ...

    E-Print Network [OSTI]

    charlotb

    2010-10-04T23:59:59.000Z

    1. Ma 15200 Lesson 18 Section 1.7. I. Representing an Inequality. There are 3 ways to represent an inequality. (1) Using the inequality symbol (sometime.

  1. Tangent length and sight distance effects on accident rates at horizontal curves on two-lane rural highways

    E-Print Network [OSTI]

    Fink, Kenneth Lee

    1993-01-01T23:59:59.000Z

    TANGENT LENGTH AND SIGHT DISTANCE EFFECTS ON ACCIDENT RATES AT HORIZONTAL CURVES ON TWO-LANE RURAL HIGHWAYS A Thesis by KENNETH LEE FINK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1993 Major Subject: Civil Engineering TANGENT LENGTH AND SIGHT DISTANCE EFFECTS ON ACCIDENT RATES AT HORIZONTAL CURVES ON TWO-LANE RURAL HIGHWAYS A Thesis hy KENNETH LEE FINK Submitted to Texas...

  2. Application of horizontal drilling in the development of a complex turbidite sandstone reservoir, Elk Hills Field, Kern County, California

    SciTech Connect (OSTI)

    Reid, S.A. (Bechtel Petroleum Operations, Inc., Tupman, CA (USA)); McJannet, G.S. (Dept. of Energy, Tupman, CA (USA)); Hart, O.D. (Chevron Inc., Tupman, CA (USA))

    1990-05-01T23:59:59.000Z

    Horizontal drilling techniques have been used at the Elk Hills field, to more effectively produce the complex 26R reservoir. This Stevens zone reservoir of the Miocene Monterey Formation contains turbid sediments deposited in a deep-sea fan setting and consists of several distinct sandstone layers averaging 150 ft thick and usually separated by mudstone beds. Layers in the reservoir dip as much as 50{degree} southwest. An expanding gas cap makes many vertical wells less favorable to operate. Horizontal completions were thought ideal for the pool because (1) original oil-water contact is level and believed stable, (2) water production is low, (3) a horizontal well provides for a long production life; and (4) several sandstone layers can be produced through one well. For the first well, the plan was to redrill an idle well to horizontal along an arc with a radius of 350 ft. The horizontal section was to be up to 1,000 ft long and extend northeast slightly oblique to dip just above the average oil-water contact. The well was drilled in September 1988, reached horizontal nearly as planned, was completed after perforating 210 ft of oil sand, and produced a daily average of 1,000 bbl oil and 8 bbl of water. However, structural influence was stronger than expected, causing the horizontal drill path to turn directly updip away from the bottom-hole target area. The well also encountered variable oil-water contacts, with more than half the horizontal section possibly water productive. Geologic and drilling data from the first well were used for planning another well. This well was drilled in October 1989, and was highly successful with over 1,000 ft of productive interval.

  3. Representing Cloud Processing of Aerosol in Numerical Models

    SciTech Connect (OSTI)

    Mechem, D.B.; Kogan, Y.L.

    2005-03-18T23:59:59.000Z

    The satellite imagery in Figure 1 provides dramatic examples of how aerosol influences the cloud field. Aerosol from ship exhaust can serve as nucleation centers in otherwise cloud-free regions, forming ship tracks (top image), or can enhance the reflectance/albedo in already cloudy regions. This image is a demonstration of the first indirect effect, in which changes in aerosol modulate cloud droplet radius and concentration, which influences albedo. It is thought that, through the effects it has on precipitation (drizzle), aerosol can also affect the structure and persistence of planetary boundary layer (PBL) clouds. Regions of cellular convection, or open pockets of cloudiness (bottom image) are thought to be remnants of strongly drizzling PBL clouds. Pockets of Open Cloudiness (POCs) (Stevens et al. 2005) or Albrecht's ''rifts'' are low cloud fraction regions characterized by anomalously low aerosol concentrations, implying they result from precipitation. These features may in fact be a demonstration of the second indirect effect. To accurately represent these clouds in numerical models, we have to treat the coupled cloud-aerosol system. We present the following series of mesoscale and large eddy simulation (LES) experiments to evaluate the important aspects of treating the coupled cloud-aerosol problem. 1. Drizzling and nondrizzling simulations demonstrate the effect of drizzle on a mesoscale forecast off the California coast. 2. LES experiments with explicit (bin) microphysics gauge the relative importance of the shape of the aerosol spectrum on the 3D dynamics and cloud structure. 3. Idealized mesoscale model simulations evaluate the relative roles of various processes, sources, and sinks.

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

    SciTech Connect (OSTI)

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

    2013-09-15T23:59:59.000Z

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

  5. Comparing generic models for interplanetary shocks and magnetic clouds axis configurations at 1 AU

    E-Print Network [OSTI]

    Janvier, Miho; Demoulin, Pascal; Masias-Meza, Jimmy; Lugaz, Noe

    2015-01-01T23:59:59.000Z

    Interplanetary Coronal Mass Ejections are the manifestation of solar transient eruptions, which can significantly modify the plasma and magnetic conditions in the heliosphere. They are often preceded by a shock, and a magnetic flux rope is detected in situ in a third to half of them. The main aim of this study is to obtain the best quantitative shape for the flux rope axis and for the shock surface from in situ data obtained during spacecraft crossings of these structures. We first compare the orientation of the flux ropes axes and shock normals obtained from independent data analyses of the same events, observed in situ at 1AU from the Sun. Then, we carry out an original statistical analysis of axes/shock normals by deriving the statistical distributions of their orientations. We fit the observed distributions using the distributions derived from several synthetic models describing these shapes. We show that the distributions of axis/shock orientations are very sensitive to their respective shape. One classi...

  6. Applicability of petroleum horizontal drilling technology to hazardous waste site characterization and remediation

    SciTech Connect (OSTI)

    Goranson, C.

    1992-09-01T23:59:59.000Z

    Horizontal wells have the potential to become an important tool for use in characterization, remediation and monitoring operations at hazardous waste disposal, chemical manufacturing, refining and other sites where subsurface pollution may develop from operations or spills. Subsurface pollution of groundwater aquifers can occur at these sites by leakage of surface disposal ponds, surface storage tanks, underground storage tanks (UST), subsurface pipelines or leakage from surface operations. Characterization and remediation of aquifers at or near these sites requires drilling operations that are typically shallow, less than 500-feet in depth. Due to the shallow nature of polluted aquifers, waste site subsurface geologic formations frequently consist of unconsolidated materials. Fractured, jointed and/or layered high compressive strength formations or compacted caliche type formations can also be encountered. Some formations are unsaturated and have pore spaces that are only partially filled with water. Completely saturated underpressured aquifers may be encountered in areas where the static ground water levels are well below the ground surface. Each of these subsurface conditions can complicate the drilling and completion of wells needed for monitoring, characterization and remediation activities. This report describes some of the equipment that is available from petroleum drilling operations that has direct application to groundwater characterization and remediation activities. A brief discussion of petroleum directional and horizontal well drilling methodologies is given to allow the reader to gain an understanding of the equipment needed to drill and complete horizontal wells. Equipment used in river crossing drilling technology is also discussed. The final portion of this report is a description of the drilling equipment available and how it can be applied to groundwater characterization and remediation activities.

  7. Response of a slotted plate flow meter to horizontal two phase flow

    E-Print Network [OSTI]

    Muralidharan, Vasanth

    2005-02-17T23:59:59.000Z

    there is a change in the pipeline geometry or 8 inclination. Severe riser slugging is an example of this effect and it can prevail for kilometers mainly in sea lines. When there are no transient effects or geometry/terrain effects the flow is steady... constant, a static differential pressure due to flow of the pure liquid is attained. 9 Therefore the static differential pressure lines of constant liquid flow rate become horizontal when the gas flow rate is reduced. 4. When the gas flow is increased...

  8. Security camera resolution measurements: Horizontal TV lines versus modulation transfer function measurements.

    SciTech Connect (OSTI)

    Birch, Gabriel Carisle; Griffin, John Clark

    2015-01-01T23:59:59.000Z

    The horizontal television lines (HTVL) metric has been the primary quantity used by division 6000 related to camera resolution for high consequence security systems. This document shows HTVL measurements are fundamen- tally insufficient as a metric to determine camera resolution, and propose a quantitative, standards based methodology by measuring the camera system modulation transfer function (MTF), the most common and accepted metric of res- olution in the optical science community. Because HTVL calculations are easily misinterpreted or poorly defined, we present several scenarios in which HTVL is frequently reported, and discuss their problems. The MTF metric is discussed, and scenarios are presented with calculations showing the application of such a metric.

  9. Gauge Field Theory Of Horizontal Su(2) X U(1) Symmetry - Doublet Plus Singlet Scheme

    E-Print Network [OSTI]

    Sogami, Ikuo S

    2010-01-01T23:59:59.000Z

    Gauge field theory of a horizontal symmetry of the group G = SU(2) X U(1) is developed so as to generalize the standard model of particle physics. All fermion and scalar fields are assumed to belong to doublets and singlets of the group in high energy regime. Mass matrices with four texture zeros of Dirac and Majorana types are systematically derived. In addition to seven scalar particles, the theory predicts existence of one peculiar vector particle which seems to play important roles in astrophysics and particle physics.

  10. Dynamics of a drop trapped inside a horizontal circular hydraulic jump

    E-Print Network [OSTI]

    Duchesne, Alexis; Lebon, Luc; Pirat, Christophe; Limat, Laurent

    2013-01-01T23:59:59.000Z

    A drop of moderate size deposited inside a horizontal circular hydraulic jump of the same liquid remains trapped at the shock front and does not coalesce. In this situation the drop is moving along the jump and one observes two different motions: a periodic one (it orbitates at constant speed) and an irregular one involving reversals of the orbital motion. Modeling the drop as a rigid sphere exchanging friction with liquid across a thin film of air, we recover the orbital motion and the internal rotation of the drop. This internal rotation is experimentally observed.

  11. Orbits and reversals of a drop rolling inside a horizontal circular hydraulic jump

    E-Print Network [OSTI]

    Alexis Duchesne; Clément Savaro; Luc Lebon; Christophe Pirat; Laurent Limat

    2013-02-14T23:59:59.000Z

    We explore the complex dynamics of a non-coalescing drop of moderate size inside a circular hydraulic jump of the same liquid formed on a horizontal disk. In this situation the drop is moving along the jump and one observes two different motions: a periodic one (it orbitates at constant speed) and an irregular one involving reversals of the orbital motion. Modeling the drop as a rigid sphere exchanging friction with liquid across a thin film of air, we recover the orbital motion and the internal rotation of the drop. This internal rotation is experimentally observed.

  12. Measurements of SCRF cavity dynamic heat load in horizontal test system

    SciTech Connect (OSTI)

    DeGraff, B.D.; Bossert, R.J.; Pei, L.; Soyars, W.M.; /Fermilab

    2009-11-01T23:59:59.000Z

    The Horizontal Test System (HTS) at Fermilab is currently testing fully assembled, dressed superconducting radio frequency (SCRF) cavities. These cavities are cooled in a bath of superfluid helium at 1.8K. Dissipated RF power from the cavities is a dynamic heat load on the cryogenic system. The magnitude of heat flux from these cavities into the helium is also an important variable for understanding cavity performance. Methods and hardware used to measure this dynamic heat load are presented. Results are presented from several cavity tests and testing accuracy is discussed.

  13. Vertical and horizontal test results of 3.9-GHz accelerating cavities at FNAL

    SciTech Connect (OSTI)

    Khabiboulline, T.; Edwards, H.; Foley, M.; Harms, E.; Hocker, James Andrew; Mitchell, D.; Rowe, A.; Solyak, N.; /Fermilab

    2008-06-01T23:59:59.000Z

    The 3rd harmonic 3.9GHz accelerating cavity was proposed to improve the beam performance of the VUV FEL, FLASH. In the frame of a collaborative agreement, Fermilab will provide DESY with a cryomodule containing a string of four cavities. Seven 9-cell Nb cavities were tested and six of them did reach accelerating gradient up to 24 MV/m almost twice more than design value of 14 MV/m. Two of these cavities are with new HOM couplers with improved design. In this paper we present all results of the vertical and horizontal tests.

  14. Measurements of SCRF cavity dynamic heat load in horizontal test system

    E-Print Network [OSTI]

    DeGraff, B D; Pei, L; Soyars, W M; 10.1063/1.3422409

    2012-01-01T23:59:59.000Z

    The Horizontal Test System (HTS) at Fermilab is currently testing fully assembled, dressed superconducting radio frequency (SCRF) cavities. These cavities are cooled in a bath of superfluid helium at 1.8K. Dissipated RF power from the cavities is a dynamic heat load on the cryogenic system. The magnitude of heat flux from these cavities into the helium is also an important variable for understanding cavity performance. Methods and hardware used to measure this dynamic heat load are presented. Results are presented from several cavity tests and testing accuracy is discussed.

  15. Globular clusters with the extended horizontal-branch as remaining cores of galaxy building blocks

    E-Print Network [OSTI]

    Young-Wook Lee; Hansung B. Gim; Chul Chung

    2007-07-11T23:59:59.000Z

    The relics of building blocks that made stellar halo and bulge are yet to be discovered unless they were completely disrupted throughout the history of the Galaxy. Here we suggest that about 25% of the Milky Way globular clusters have characteristics of the remaining cores of these early building blocks rather than genuine star clusters. They are clearly distinct from other normal globular clusters in the presence of extended horizontal-branch and multiple stellar populations, in mass (brightness), and most importantly in orbital kinematics. Based on this result, a three-stage formation picture of the Milky Way is suggested, which includes early mergers, collapse, and later accretion.

  16. Examination of Hydrate Formation Methods: Trying to Create Representative Samples

    SciTech Connect (OSTI)

    Kneafsey, T.J.; Rees, E.V.L.; Nakagawa, S.; Kwon, T.-H.

    2011-04-01T23:59:59.000Z

    Forming representative gas hydrate-bearing laboratory samples is important so that the properties of these materials may be measured, while controlling the composition and other variables. Natural samples are rare, and have often experienced pressure and temperature changes that may affect the property to be measured [Waite et al., 2008]. Forming methane hydrate samples in the laboratory has been done a number of ways, each having advantages and disadvantages. The ice-to-hydrate method [Stern et al., 1996], contacts melting ice with methane at the appropriate pressure to form hydrate. The hydrate can then be crushed and mixed with mineral grains under controlled conditions, and then compacted to create laboratory samples of methane hydrate in a mineral medium. The hydrate in these samples will be part of the load-bearing frame of the medium. In the excess gas method [Handa and Stupin, 1992], water is distributed throughout a mineral medium (e.g. packed moist sand, drained sand, moistened silica gel, other porous media) and the mixture is brought to hydrate-stable conditions (chilled and pressurized with gas), allowing hydrate to form. This method typically produces grain-cementing hydrate from pendular water in sand [Waite et al., 2004]. In the dissolved gas method [Tohidi et al., 2002], water with sufficient dissolved guest molecules is brought to hydrate-stable conditions where hydrate forms. In the laboratory, this is can be done by pre-dissolving the gas of interest in water and then introducing it to the sample under the appropriate conditions. With this method, it is easier to form hydrate from more soluble gases such as carbon dioxide. It is thought that this method more closely simulates the way most natural gas hydrate has formed. Laboratory implementation, however, is difficult, and sample formation is prohibitively time consuming [Minagawa et al., 2005; Spangenberg and Kulenkampff, 2005]. In another version of this technique, a specified quantity of gas is placed in a sample, then the sample is flooded with water and cooled [Priest et al., 2009]. We have performed a number of tests in which hydrate was formed and the uniformity of the hydrate formation was examined. These tests have primarily used a variety of modifications of the excess gas method to make the hydrate, although we have also used a version of the excess water technique. Early on, we found difficulties in creating uniform samples with a particular sand/ initial water saturation combination (F-110 Sand, {approx} 35% initial water saturation). In many of our tests we selected this combination intentionally to determine whether we could use a method to make the samples uniform. The following methods were examined: Excess gas, Freeze/thaw/form, Freeze/pressurize/thaw, Excess gas followed by water saturation, Excess water, Sand and kaolinite, Use of a nucleation enhancer (SnoMax), and Use of salt in the water. Below, each method, the underlying hypothesis, and our results are briefly presented, followed by a brief conclusion. Many of the hypotheses investigated are not our own, but were presented to us. Much of the data presented is from x-ray CT scanning our samples. The x-ray CT scanner provides a three-dimensional density map of our samples. From this map and the physics that is occurring in our samples, we are able to gain an understanding of the spatial nature of the processes that occur, and attribute them to the locations where they occur.

  17. Analemmatic and Horizontal Sundials of the Bronze Age (Northern Black Sea Coast)

    E-Print Network [OSTI]

    Vodolazhskaya, Larisa

    2013-01-01T23:59:59.000Z

    The paper presents the results of a study of unique plate with images of Srubna burial of tumuli group Popov Yar-2 (Ukraine) and plate of Srubna burial of tumulus field Tavriya-1 (Russia). A distinctive feature of the images is the orderliness and symmetry of the composition, as well as the location of elliptical cupped depressions. With the help of mathematical and astronomical methods we prove in this paper that the plates with the images are the ancient sundials. At the Popov Yar-2 plate located two sundials, which worked at the same time: the analemmatic sundial and the horizontal sundial with two gnomons and the linear scale. At the Tavriya-1 plate located analemmatic sundial. On the basis of the reconstruction of the linear parameters of the gnomon of both Popov Yar-2 plate sundials and given the scale value of horizontal sundial, in the article that the potential indirect impact protoscientific knowledge of ancient Egypt to the Srubna population in the Northern Black Sea coast. Srubna burial, plate, we...

  18. Natural convection in horizontal porous layers with localized heating from below

    SciTech Connect (OSTI)

    Prasad, V. (Columbia Univ., New York, NY (United States)); Kulacki, F.A. (Univ. of Delaware, Newark (United States))

    1987-08-01T23:59:59.000Z

    Convective flow of fluid through saturated porous media heated from below is of considerable interest, and has been extensively studied. Most of these studies are concerned with either infinite horizontal porous layers or rectangular (or cylindrical) porous cavities with adiabatic vertical walls. A related problem of practical importance occurs when only a portion of the bottom surface is heated and the rest of it is either adiabatic or isothermally cooled. This situation is encountered in several geothermal areas which consists of troughs of volcanic debris contained by walls of nonfragmented ignimbrite. Thus, the model region considered is a locally heated long trough of isotropic porous medium confined by impermeable and insulating surroundings. Also, the recent motivation to study this problem has come from the efforts to identify a geologic repository for nuclear waste disposal. The purpose of the present work is to consider the effects of aspect ratio and Rayleigh number on free convection heat transfer from an isothermal heat source centrally located on the bottom surface of a horizontal porous cavity.

  19. Advanced Horizontal Well Recirculation Systems for Geothermal Energy Recovery in Sedimentary and Crystalline Formations

    SciTech Connect (OSTI)

    Bruno, Mike; Detwiler, Russell L; Lao, Kang; Serajian, Vahid; Elkhoury, Jean; Diessl, Julia; White, Nicky

    2012-12-13T23:59:59.000Z

    There is increased recognition that geothermal energy resources are more widespread than previously thought, with potential for providing a significant amount of sustainable clean energy worldwide. Recent advances in drilling, completion, and production technology from the oil and gas industry can now be applied to unlock vast new geothermal resources, with some estimates for potential electricity generation from geothermal energy now on the order of 2 million megawatts. The primary objectives of this DOE research effort are to develop and document optimum design configurations and operating practices to produce geothermal power from hot permeable sedimentary and crystalline formations using advanced horizontal well recirculation systems. During Phase I of this research project Terralog Technologies USA and The University of California, Irvine (UCI), have completed preliminary investigations and documentation of advanced design concepts for paired horizontal well recirculation systems, optimally configured for geothermal energy recovery in permeable sedimentary and crystalline formations of varying structure and material properties. We have also identified significant geologic resources appropriate for application of such technology. The main challenge for such recirculation systems is to optimize both the design configuration and the operating practices for cost-effective geothermal energy recovery. These will be strongly influenced by sedimentary formation properties, including thickness and dip, temperature, thermal conductivity, heat capacity, permeability, and porosity; and by working fluid properties.

  20. Natural convection heat transfer for a staggered array of heated, horizontal cylinders within a rectangular enclosure

    SciTech Connect (OSTI)

    Triplett, C.E.

    1996-12-01T23:59:59.000Z

    This thesis presents the results of an experimental investigation of natural convection heat transfer in a staggered array of heated cylinders, oriented horizontally within a rectangular enclosure. The main purpose of this research was to extend the knowledge of heat transfer within enclosed bundles of spent nuclear fuel rods sealed within a shipping or storage container. This research extends Canaan`s investigation of an aligned array of heated cylinders that thermally simulated a boiling water reactor (BWR) spent fuel assembly sealed within a shipping or storage cask. The results are presented in terms of piecewise Nusselt-Rayleigh number correlations of the form Nu = C(Ra){sup n}, where C and n are constants. Correlations are presented both for individual rods within the array and for the array as a whole. The correlations are based only on the convective component of the heat transfer. The radiative component was calculated with a finite-element code that used measured surface temperatures, rod array geometry, and measured surface emissivities as inputs. The correlation results are compared to Canaan`s aligned array results and to other studies of natural convection in horizontal tube arrays.

  1. Horizontal Steam Generator Thermal-Hydraulics at Various Steady-State Power Levels

    SciTech Connect (OSTI)

    Stevanovic, Vladimir D. [University of Belgrade, Kraljice Marije 16, 11000 Belgrade, Serbia and Montenegro (Yugoslavia); Stosic, Zoran V.; Kiera, Michael; Stoll, Uwe [Framatome ANP GmbH, P.O. Box 3220, 91050 Erlangen (Germany)

    2002-07-01T23:59:59.000Z

    Three-dimensional computer simulation and analyses of the horizontal steam generator thermal-hydraulics of the WWER 1000 nuclear power plant have been performed for 50% and 75% partial loads, 100% nominal load and 110% over-load. Presented results show water and steam mass flow rate vectors, steam void fraction spatial distribution, recirculation zones, swell level position, water mass inventory on the shell side, and other important thermal-hydraulic parameters. The simulations have been performed with the computer code 3D ANA, based on the 'two-fluid' model approach. Steam-water interface transport processes, as well as tube bundle flow resistance, energy transfer, and steam generation within tube bundles are modelled with {sup c}losure laws{sup .} Applied approach implies non-equilibrium thermal and flow conditions. The model is solved by the control volume procedure, which has been extended in order to take into account the 3D flow of liquid and gas phase. The methodology is validated by comparing numerical and experimental results of real steam generator operational conditions at various power levels of the WWER Novovoronezh, Unit 5. One-dimensional model of the horizontal steam generator has been built with the RELAP 5 standard code on the basis of the multidimensional two-phase flow structure obtained with the 3D ANA code. RELAP 5 and 3D ANA code results are compared, showing acceptable agreement. (authors)

  2. Demonstration of Eastman Christensen horizontal drilling system -- Integrated Demonstration Site, Savannah River Site

    SciTech Connect (OSTI)

    Not Available

    1992-12-01T23:59:59.000Z

    An innovative horizontal drilling system was used to install two horizontal wells as part of an integrated demonstration project at the Savannah River Site (SRS), Aiken, South Carolina. The SRS is located in south-central South Carolina in the upper Coastal Plain physiographic province. The demonstration site is located near the A/M Area, and is currently known as the Integated Demonstration Site. The Department of Energy's Office of Technology Development initiated an integrated demonstration of innovative technologies for cleanup of volatile organic compounds (VOCS) in soils and groundwater at the SRS in 1989. The overall goal of the program is to demonstrate, at a single location, multiple technologies in the fields of drilling, characterization, monitoring, and remediation. Innovative technologies are compared to one another and to baseline technologies in terms of technical performance and cost effectiveness. Transfer of successfully demonstrated technologies and systems to DOE environmental restoration organizations, to other government agencies, and to industry is a critical part of the program.

  3. Demonstration of Eastman Christensen horizontal drilling system -- Integrated Demonstration Site, Savannah River Site

    SciTech Connect (OSTI)

    Not Available

    1992-12-01T23:59:59.000Z

    An innovative horizontal drilling system was used to install two horizontal wells as part of an integrated demonstration project at the Savannah River Site (SRS), Aiken, South Carolina. The SRS is located in south-central South Carolina in the upper Coastal Plain physiographic province. The demonstration site is located near the A/M Area, and is currently known as the Integated Demonstration Site. The Department of Energy`s Office of Technology Development initiated an integrated demonstration of innovative technologies for cleanup of volatile organic compounds (VOCS) in soils and groundwater at the SRS in 1989. The overall goal of the program is to demonstrate, at a single location, multiple technologies in the fields of drilling, characterization, monitoring, and remediation. Innovative technologies are compared to one another and to baseline technologies in terms of technical performance and cost effectiveness. Transfer of successfully demonstrated technologies and systems to DOE environmental restoration organizations, to other government agencies, and to industry is a critical part of the program.

  4. Horizontal gene transfer and the evolution of transcriptionalregulation in Escherichia coli

    SciTech Connect (OSTI)

    Price, Morgan N.; Dehal, Paramvir S.; Arkin, Adam P.

    2007-12-20T23:59:59.000Z

    Background: Most bacterial genes were acquired by horizontalgene transfer from other bacteria instead of being inherited bycontinuous vertical descent from an ancient ancestor}. To understand howthe regulation of these {acquired} genes evolved, we examined theevolutionary histories of transcription factors and of regulatoryinteractions from the model bacterium Escherichia coli K12. Results:Although most transcription factors have paralogs, these usually arose byhorizontal gene transfer rather than by duplication within the E. colilineage, as previously believed. In general, most neighbor regulators --regulators that are adjacent to genes that they regulate -- were acquiredby horizontal gene transfer, while most global regulators evolvedvertically within the gamma-Proteobacteria. Neighbor regulators wereoften acquired together with the adjacent operon that they regulate, sothe proximity might be maintained by repeated transfers (like "selfishoperons"). Many of the as-yet-uncharacterized (putative) regulators havealso been acquired together with adjacent genes, so we predict that theseare neighbor regulators as well. When we analyzed the histories ofregulatory interactions, we found that the evolution of regulation byduplication was rare, and surprisingly, many of the regulatoryinteractions that are shared between paralogs result from convergentevolution. Another surprise was that horizontally transferred genes aremore likely than other genes to be regulated by multiple regulators, andmost of this complex regulation probably evolved after the transfer.Conclusions: Our results highlight the rapid evolution of niche-specificgene regulation in bacteria.

  5. A theoretical model of film condensation in a bundle of horizontal low finned tubes

    SciTech Connect (OSTI)

    Honda, H.; Nozu, S.; Takeda, Y. (Okayama Univ. (Japan))

    1989-05-01T23:59:59.000Z

    The previous theoretical model of film condensation on a single horizontal low finned tube is extended to include the effect of condensate inundation. Based on the flow characteristics of condensate on a vertical column of horizontal low finned tubes, two major flow modes, the column mode and the sheet mode, are considered. In the column mode, the surface of the lower tubes is divided into the portion under the condensate column where the condensate flow is affected by the impinging condensate from the upper tubes, and the portion between the condensate columns where the condensate flow is not affected by the impinging condensate. In the sheet mode, the whole tube surface is assumed to be affected by the impinging condensate. Sample calculations for practical conditions show that the effects of the fin spacing and the number of vertical tube rows on the heat transfer performance is significant for R-12, while the effects are small for steam. The predicted value of the heat transfer coefficient for each tube row compares well with available experimental data, including four fluids and five tube bundles.

  6. Integrated approach towards the Application of Horizontal Wells to Improve Waterflooding Performance. Annual report

    SciTech Connect (OSTI)

    Kelkar, M.; Liner, C.; Kerr, D.

    1994-06-01T23:59:59.000Z

    This annual report describes the progress during the first year of the project on Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance. This project is funded under the Department of Energy`s Class I program which is targeted towards improving the reservoir performance of mature oil fields located in fluvial-dominated deltaic deposits. The project involves an integrated approach to characterize the reservoir followed by drilling of horizontal injection wells to improve production performance. The type of data the authors intend to integrate includes cross bore hole seismic surveys, geological interpretation based on logs and cores, and engineering information. This report covers the first phase of the project which includes a detailed reservoir description of the field based on the available information, followed by flow simulation of the Self Unit to compare the simulated result with the historical performance. Based on the simulated results, a vertical test well was drilled to validate this reservoir description. The well will also be used as a source well for a cross bore hole seismic survey. This report discusses the related geophysical, geological and engineering activities leading to the drilling of the vertical test well. The validation phase and the collection of the cross bore hole survey has just begun, and the results will be presented in the next annual report.

  7. Interlaboratory comparison of the horizontal pipe insulation test apparatus up to 350{degrees}C

    SciTech Connect (OSTI)

    Whitaker, T.E. [Pabco, Fruita, CO (United States); Graves, R.S. [Oak Ridge National Lab., TN (United States); McElroy, D.L. [McElroy (David L.), Knoxville, TN (United States); Smith, D.R. [National Institute of Standards and Technology, Boulder, CO (United States)

    1993-12-01T23:59:59.000Z

    The purpose of this interlaboratory comparison was to provide information for the precision and bias section in the ASTM Standard Test Method C 335, {open_quotes}Steady-State Heat Transfer Properties of Horizontal Pipe Insulation.{close_quotes} (The text describes the ASTM C 335 test method, the specimens tested and the test protocol). The apparent thermal conductivity of two rigid calcium silicate pipe insulation specimens was measured by eight laboratories. Each laboratory measured both specimens at four different temperatures. The test mean temperatures ranged from 35 to 390{degrees}C. The two standard deviation value for the data ranged from 4.5 to 7.7% and the average value was 6.3%. The statement recommended for the precision and bias statement for Section 13.1.4 of ASTM C 335 is: {open_quotes}Tests performed at seven different laboratories using guarded-end horizontal pipe test apparatus and at one laboratory using an unguarded cylindrical screen test apparatus on two specimens of calcium silicate insulation in the range of mean temperatures from 35 to 390{degree}C did not vary by more than 6.3% (two standard deviations) of the average.{close_quotes}

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

    SciTech Connect (OSTI)

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

    2011-02-15T23:59:59.000Z

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

  9. Dye alignment in luminescent solar concentrators: II. Horizontal alignment for energy harvesting in linear polarizers

    SciTech Connect (OSTI)

    Mulder, Carlijn L.; Reusswig, Phil D.; Beyler, A. P.; Kim, Heekyung; Rotschild, Carmel; Baldo, Marc

    2010-01-01T23:59:59.000Z

    We describe Linearly Polarized Luminescent Solar Concentrators (LP-LSCs) to replace conventional, purely absorptive, linear polarizers in energy harvesting applications. As a proof of concept, we align 3-(2-Benzothiazolyl)-N,N-diethylumbelliferylamine (Coumarin 6) and 4-dicyanomethyl-6-dimethylaminostiryl-4H-pyran (DCM) dye molecules linearly in the plane of the substrate using a polymerizable liquid crystal host. We show that up to 38% of the photons polarized on the long axis of the dye molecules can be coupled to the edge of the device for an LP-LSC based on Coumarin 6 with an order parameter of 0.52.

  10. Extended Kalman filtering applied to a two-axis robotic arm with flexible links

    SciTech Connect (OSTI)

    Lertpiriyasuwat, V.; Berg, M.C.; Buffinton, K.W.

    2000-03-01T23:59:59.000Z

    An industrial robot today uses measurements of its joint positions and models of its kinematics and dynamics to estimate and control its end-effector position. Substantially better end-effector position estimation and control performance would be obtainable if direct measurements of its end-effector position were also used. The subject of this paper is extended Kalman filtering for precise estimation of the position of the end-effector of a robot using, in addition to the usual measurements of the joint positions, direct measurements of the end-effector position. The estimation performances of extended Kalman filters are compared in applications to a planar two-axis robotic arm with very flexible links. The comparisons shed new light on the dependence of extended Kalman filter estimation performance on the quality of the model of the arm dynamics that the extended Kalman filter operates with.

  11. Customized airfoils and their impact on VAWT (Vertical-Axis Wind Turbine) cost of energy

    SciTech Connect (OSTI)

    Berg, D.E.

    1990-01-01T23:59:59.000Z

    Sandia National Laboratories has developed a family of airfoils specifically designed for use in the equatorial portion of a Vertical-Axis Wind Turbine (VAWT) blade. An airfoil of that family has been incorporated into the rotor blades of the DOE/Sandia 34-m diameter VAWT Test Bed. The airfoil and rotor design process is reviewed. Comparisons with data recently acquired from flow visualization tests and from the DOE/Sandia 34-m diameter VAWT Test Bed illustrate the success that was achieved in the design. The economic optimization model used in the design is described and used to evaluate the effect of modifications to the current Test Bed blade. 1 tab., 11 figs., 13 refs.

  12. Cosmic Rotation Axis, Birefrigence and Axions to detect Primordial torsion fields

    E-Print Network [OSTI]

    L. C. Garcia de Andrade

    2001-11-19T23:59:59.000Z

    Nodland Ralston (PRL,1997) investigated the cosmological anisotropy of electromagnetic fields.In this paper we show that it is possible obtain a torsion correction to Nodland-Ralston action starting from the massive Proca electrodynamics in Riemannian spacetime and performing the minimal coupling with torsion.We end up with an action which contains the Nodland Ralston action without breaking the gauge invariance.This mechanism however gives a photon a mass generated by the nonlinear torsion terms.The torsion vector is along the cosmic rotation axis and interacts with the massive photon.This method which breaks conformal invariance allow us to determine a primordial torsion of the order $10^{-29}eV$ from the well-known photon mass limits.

  13. Heterogeneous Shallow-Shelf Carbonate Buildups in the Paradox Basin, Utah and Colorado: Targets for Increased Oil Production and Reserves Using Horizontal Drilling Techniques

    SciTech Connect (OSTI)

    Thomas C. Chidsey; Kevin McClure; Craig D. Morgan

    2003-10-05T23:59:59.000Z

    The Paradox Basin of Utah, Colorado, Arizona, and New Mexico contains nearly 100 small oil fields producing from carbonate buildups within the Pennsylvanian (Desmoinesian) Paradox Formation. These fields typically have one to 10 wells with primary production ranging from 700,000 to 2,000,000 barrels (111,300-318,000 m{sup 3}) of oil per field and a 15 to 20 percent recovery rate. At least 200 million barrels (31.8 million m{sup 3}) of oil will not be recovered from these small fields because of inefficient recovery practices and undrained heterogeneous reservoirs. Several fields in southeastern Utah and southwestern Colorado are being evaluated as candidates for horizontal drilling and enhanced oil recovery from existing vertical wells based upon geological characterization and reservoir modeling case studies. Geological characterization on a local scale is focused on reservoir heterogeneity, quality, and lateral continuity, as well as possible reservoir compartmentalization, within these fields. This study utilizes representative cores, geophysical logs, and thin sections to characterize and grade each field's potential for drilling horizontal laterals from existing development wells. The results of these studies can be applied to similar fields elsewhere in the Paradox Basin and the Rocky Mountain region, the Michigan and Illinois Basins, and the Midcontinent region. This report covers research activities for the first half of the fourth project year (April 6 through October 5, 2003). The work included (1) analysis of well-test data and oil production from Cherokee and Bug fields, San Juan County, Utah, and (2) diagenetic evaluation of stable isotopes from the upper Ismay and lower Desert Creek zones of the Paradox Formation in the Blanding sub-basin, Utah. Production ''sweet spots'' and potential horizontal drilling candidates were identified for Cherokee and Bug fields. In Cherokee field, the most productive wells are located in the thickest part of the mound facies of the upper Ismay zone, where microporosity is well developed. In Bug field, the most productive wells are located structurally downdip from the updip porosity pinch out in the dolomitized lower Desert Creek zone, where micro-box-work porosity is well developed. Microporosity and micro-box-work porosity have the greatest hydrocarbon storage and flow capacity, and potential horizontal drilling target in these fields. Diagenesis is the main control on the quality of Ismay and Desert Creek reservoirs. Most of the carbonates present within the lower Desert Creek and Ismay have retained a marine-influenced carbon isotope geochemistry throughout marine cementation as well as through post-burial recycling of marine carbonate components during dolomitization, stylolitization, dissolution, and late cementation. Meteoric waters do not appear to have had any effect on the composition of the dolomites in these zones. Light oxygen values obtained from reservoir samples for wells located along the margins or flanks of Bug field may be indicative of exposure to higher temperatures, to fluids depleted in {sup 18}O relative to sea water, or to hypersaline waters during burial diagenesis. The samples from Bug field with the lightest oxygen isotope compositions are from wells that have produced significantly greater amounts of hydrocarbons. There is no significant difference between the oxygen isotope compositions from lower Desert Creek dolomite samples in Bug field and the upper Ismay limestones and dolomites from Cherokee field. Carbon isotopic compositions for samples from Patterson Canyon field can be divided into two populations: isotopically heavier mound cement and isotopically lighter oolite and banded cement. Technology transfer activities consisted of exhibiting a booth display of project materials at the annual national convention of the American Association of Petroleum Geologists, a technical presentation, a core workshop, and publications. The project home page was updated on the Utah Geological Survey Internet web site.

  14. HETEROGENEOUS SHALLOW-SHELF CARBONATE BUILDUPS IN THE PARADOX BASIN, UTAH AND COLORADO: TARGETS FOR INCREASED OIL PRODUCTION AND RESERVES USING HORIZONTAL DRILLING TECHNIQUES

    SciTech Connect (OSTI)

    David E. Eby; Thomas C. Chidsey, Jr.; Kevin McClure; Craig D. Morgan

    2003-07-01T23:59:59.000Z

    The Paradox Basin of Utah, Colorado, Arizona, and New Mexico contains nearly 100 small oil fields producing from carbonate buildups within the Pennsylvanian (Desmoinesian) Paradox Formation. These fields typically have one to 10 wells with primary production ranging from 700,000 to 2,000,000 barrels (111,300-318,000 m{sup 3}) of oil per field and a 15 to 20 percent recovery rate. At least 200 million barrels (31.8 million m{sup 3}) of oil will not be recovered from these small fields because of inefficient recovery practices and undrained heterogeneous reservoirs. Several fields in southeastern Utah and southwestern Colorado are being evaluated as candidates for horizontal drilling and enhanced oil recovery from existing vertical wells based upon geological characterization and reservoir modeling case studies. Geological characterization on a local scale is focused on reservoir heterogeneity, quality, and lateral continuity, as well as possible reservoir compartmentalization, within these fields. This study utilizes representative cores, geophysical logs, and thin sections to characterize and grade each field's potential for drilling horizontal laterals from existing development wells. The results of these studies can be applied to similar fields elsewhere in the Paradox Basin and the Rocky Mountain region, the Michigan and Illinois Basins, and the Midcontinent region. This report covers research activities for the second half of the third project year (October 6, 2002, through April 5, 2003). The primary work included describing and mapping regional facies of the upper Ismay and lower Desert Creek zones of the Paradox Formation in the Blanding sub-basin, Utah. Regional cross sections show the development of ''clean carbonate'' packages that contain all of the productive reservoir facies. These clean carbonates abruptly change laterally into thick anhydrite packages that filled several small intra-shelf basins in the upper Ismay zone. Examination of upper Ismay cores identified seven depositional facies: open marine, middle shelf, inner shelf/tidal flat, bryozoan mounds, phylloid-algal mounds, quartz sand dunes, and anhydritic salinas. Lower Desert Creek facies include open marine, middle shelf, protomounds/collapse breccia, and phylloid-algal mounds. Mapping the upper Ismay zone facies delineates very prospective reservoir trends that contain porous, productive buildups around the anhydrite-filled intra-shelf basins. Facies and reservoir controls imposed by the anhydritic intra-shelf basins should be considered when selecting the optimal location and orientation of any horizontal drilling from known phylloidalgal reservoirs to undrained reserves, as well as identifying new exploration trends. Although intra-shelf basins are not present in the lower Desert Creek zone of the Blanding sub-basin, drilling horizontally along linear shoreline trends could also encounter previously undrilled, porous intervals and buildups. Technology transfer activities consisted of a technical presentation at a Class II Review conference sponsored by the National Energy Technology Laboratory at the Center for Energy and Economic Diversification in Odessa, Texas. The project home page was updated on the Utah Geological Survey Internet web site.

  15. Fish Passage Through a Simulated Horizontal Bulb Turbine Pressure Regime: A Supplement to"Laboratory Studies of the Effects of Pressure and Dissolved Gas Supersaturation on Turbine-Passed Fish"

    SciTech Connect (OSTI)

    Abernethy, Cary S. (BATTELLE (PACIFIC NW LAB)); Amidan, Brett G. (BATTELLE (PACIFIC NW LAB)); Cada, G F. (ORNL)

    2003-07-31T23:59:59.000Z

    Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the"worst case" pressure conditions and under less severe conditions where pressure changes were minimized. For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low head dams. The results were compared to results from previous test series. Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the"worst case" pressure conditions and under less severe conditions where pressure changes were minimized. For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low head dams. The results were compared to results from previous test series. Both fish species were acclimated for 16-22 hours at either surface (101 kPa; 1 atm) or 30 ft (191 kPa; 1.9 atm) of pressure in a hyperbaric chamber before exposure to a pressure scenario simulating passage through a horizontal bulb turbine. The simulation was as follows: gradual pressure increase to about 2 atm of pressure, followed by a sudden (0.4 second) decrease in pressure to either 0.7 or 0.95 atm, followed by gradual return to 1 atm (surface water pressure). Following the exposure, fish were held at surface pressure for a 48-hour post exposure observation period. No fall chinook salmon died during or after exposure to the horizontal bulb turbine passage pressures, and no injuries were observed during the 48-hour post exposure observation period. As with the previous test series, it cannot be determined whether fall chinook salmon acclimated to the greater water pressure during the pretest holding period. For bluegill sunfish exposed to the horizontal bulb turbine turbine-passage pressures, only one fish died and injuries were less severe and less common than for bluegills subjected to either the"worst case" pressure or modified Kaplan turbine pressure conditions in previous tests. Injury rates for bluegills were higher at 0.7 atm nadir than for the 0.95 atm nadir. However, injuries were limited to minor internal hemorrhaging. Bluegills did not suffer swim bladder rupture in any tested scenarios. Tests indicated that for most of the cross-sectional area of a horizontal bulb turbine, pressure changes occurring during turbine passage are not harmful to fall chinook salmon and only minimally harmful to bluegill. However, some areas within a horizontal bulb turbine may have extreme pressure conditions that would be harmful to fish. These scenarios were not tested because they represent a small cross-sectional area of the turbine compared to the centerline pressures scenarios used in these tests.

  16. Changes in Inflammatory Biomarkers Across Weight Classes in a Representative US Population: A Link Between Obesity and Inflammation

    E-Print Network [OSTI]

    Nguyen, Xuan-Mai T.; Lane, John; Smith, Brian R.; Nguyen, Ninh T.

    2009-01-01T23:59:59.000Z

    Weight Classes in a Representative US Population: A Linkexamines a nationally representative complex, multistageeach weight class for a representative US population. The

  17. Structures of Domains I and IV from YbbR are representative of...

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

    of Domains I and IV from YbbR are representative of a widely distributed protein family. Structures of Domains I and IV from YbbR are representative of a widely distributed protein...

  18. Gregory H. Friedman: Before the U.S. House of Representatives...

    Energy Savers [EERE]

    Government Reform Gregory H. Friedman: Before the U.S. House of Representatives Committee on Government Reform March 20, 2003 Before the U.S. House of Representatives Committee on...

  19. Technical basis for the aboveground structure failure and associated represented hazardous conditions

    SciTech Connect (OSTI)

    GOETZ, T.G.

    2003-07-25T23:59:59.000Z

    This technical basis document describes the risk binning process and the technical basis for assigning risk bins for the aboveground structure failure representative accident and associated represented hazardous conditions. This document was developed to support the documented safety analysis.

  20. Aerodynamic Models For Hurricanes I. Model description and horizontal motion of hurricane

    E-Print Network [OSTI]

    Leonov, Arkady I

    2008-01-01T23:59:59.000Z

    Aerodynamic models are developed to describe coherent structures and transport processes in hurricanes moving over open seas. The models consist of the lower boundary layer and upper adiabatic layer. Except friction at the air/sea interface,proposed modeling avoids the common turbulent approximations while using explicitly or implicitly basic stability constraints. The models analyze dynamics of upper hurricane adiabatic layer, dynamics and transport processes in hurricane boundary layer, and genesis and maturing of hurricane. The proposed modeling provides a rude enough but consistent analytical description of basic processes in hurricanes. The present paper qualitatively describes the model of mature hurricane, briefly discusses the basic thermodynamic relations and aerodynamic equations, and establishes the principles of horizontal motion for mature hurricane.

  1. Apparatus and method for the horizontal, crucible-free growth of silicon sheet crystals

    DOE Patents [OSTI]

    Ciszek, T.F.

    1984-09-12T23:59:59.000Z

    Apparatus is provided for continuously forming a silicon crystal sheet from a silicon rod in a non-crucible environment. The rod is rotated and fed toward an RF coil in an inert atmosphere so that the upper end of the rod becomes molten and the silicon sheet crystal is pulled therefrom substantially horizontally in a continuous strip. A shorting ring may be provided around the rod to limit the heating to the upper end only. Argon gas can be used to create the inert atmosphere within a suitable closed chamber. By use of this apparatus and method, a substantially defect-free silicon crystal sheet is formed which can be used for micro-circuitry chips or solar cells.

  2. Experimental on two sensors combination used in horizontal pipe gas-water two-phase flow

    SciTech Connect (OSTI)

    Wu, Hao; Dong, Feng [Tianjin Key Laboratory of Process Measurement and Control, School of Electrical Engineering and Automation, Tianjin University, Tianjin (China)

    2014-04-11T23:59:59.000Z

    Gas-water two phase flow phenomenon widely exists in production and living and the measurement of it is meaningful. A new type of long-waist cone flow sensor has been designed to measure two-phase mass flow rate. Six rings structure of conductance probe is used to measure volume fraction and axial velocity. The calibration of them have been made. Two sensors have been combined in horizontal pipeline experiment to measure two-phase flow mass flow rate. Several model of gas-water two-phase flow has been discussed. The calculation errors of total mass flow rate measurement is less than 5% based on the revised homogeneous flow model.

  3. Method for forming an in situ oil shale retort with horizontal free faces

    DOE Patents [OSTI]

    Ricketts, Thomas E. (Grand Junction, CO); Fernandes, Robert J. (Bakersfield, CA)

    1983-01-01T23:59:59.000Z

    A method for forming a fragmented permeable mass of formation particles in an in situ oil shale retort is provided. A horizontally extending void is excavated in unfragmented formation containing oil shale and a zone of unfragmented formation is left adjacent the void. An array of explosive charges is formed in the zone of unfragmented formation. The array of explosive charges comprises rows of central explosive charges surrounded by a band of outer explosive charges which are adjacent side boundaries of the retort being formed. The powder factor of each outer explosive charge is made about equal to the powder factor of each central explosive charge. The explosive charges are detonated for explosively expanding the zone of unfragmented formation toward the void for forming the fragmented permeable mass of formation particles having a reasonably uniformly distributed void fraction in the in situ oil shale retort.

  4. Analysis of gallium arsenide deposition in a horizontal chemical vapor deposition reactor using massively parallel computations

    SciTech Connect (OSTI)

    Salinger, A.G.; Shadid, J.N.; Hutchinson, S.A. [and others

    1998-01-01T23:59:59.000Z

    A numerical analysis of the deposition of gallium from trimethylgallium (TMG) and arsine in a horizontal CVD reactor with tilted susceptor and a three inch diameter rotating substrate is performed. The three-dimensional model includes complete coupling between fluid mechanics, heat transfer, and species transport, and is solved using an unstructured finite element discretization on a massively parallel computer. The effects of three operating parameters (the disk rotation rate, inlet TMG fraction, and inlet velocity) and two design parameters (the tilt angle of the reactor base and the reactor width) on the growth rate and uniformity are presented. The nonlinear dependence of the growth rate uniformity on the key operating parameters is discussed in detail. Efficient and robust algorithms for massively parallel reacting flow simulations, as incorporated into our analysis code MPSalsa, make detailed analysis of this complicated system feasible.

  5. Modelling Counter-Current Two-Phase Flow of Saturated Superfluid Helium in Quasi-Horizontal Tubes: Application to the LHC Cryogenic System

    E-Print Network [OSTI]

    Guinaudeau, H

    1996-01-01T23:59:59.000Z

    Modelling Counter-Current Two-Phase Flow of Saturated Superfluid Helium in Quasi-Horizontal Tubes: Application to the LHC Cryogenic System

  6. Comparison of transient horizontal magnetic fields in a plage region and in the quiet Sun

    E-Print Network [OSTI]

    Ryohko Ishikawa; Saku Tsuneta

    2008-12-09T23:59:59.000Z

    Properties of transient horizontal magnetic fields (THMFs) in both plage and quiet Sun regions are obtained and compared. Spectro-polarimetric observations with the Solar Optical Telescope (SOT) on the Hinode satellite were carried out with a cadence of about 30 seconds for both plage and quiet regions located near disk center. We select THMFs that have net linear polarization (LP) higher than 0.22%, and an area larger than or equal to 3 pixels, and compare their occurrence rates and distribution of magnetic field azimuth. We obtain probability density functions (PDFs) of magnetic field strength and inclination for both regions.The occurrence rate in the plage region is the same as for the quiet Sun. The vertical magnetic flux in the plage region is ~8 times larger than in the quiet Sun. There is essentially no preferred orientation for the THMFs in either region. However, THMFs in the plage region with higher LP have a preferred direction consistent with that of the plage-region's large-scale vertical field pattern. PDFs show that there is no difference in the distribution of field strength of horizontal fields between the quiet Sun and the plage regions when we avoid the persistent large vertical flux concentrations for the plage region. The similarity of the PDFs and of the occurrence rates in plage and quiet regions suggests that a local dynamo process due to the granular motion may generate THMFs all over the sun. The preferred orientation for higher LP in the plage indicates that the THMFs are somewhat influenced by the larger-scale magnetic field pattern of the plage.

  7. China’s Military Representatives: Striving Toward Professional Contracting and Procurement

    E-Print Network [OSTI]

    Puska, Susan M; McReynolds, Joe; Geary, Debra

    2011-01-01T23:59:59.000Z

    effect of specialization could be to develop military representatives who are experts in specific areas of the weapons and

  8. The Allied Health Faculty Organization invited Representative Ed Bryant (7th Congressional

    E-Print Network [OSTI]

    Cui, Yan

    The Allied Health Faculty Organization invited Representative Ed Bryant (7th Congressional District) to visit the University and discuss such topics as health and education. Representative Bryant is a member Commerce Committee Prescription Drug Task Force. Prior to his service in the House, Representative Bryant

  9. Why Think Causally? Published under the title: "Why Represent Causal Relations?"

    E-Print Network [OSTI]

    Strevens, Michael

    Why Think Causally? Published under the title: "Why Represent Causal Relations?" Michael Strevens University Press, New York, 2007. A Why do we represent the world around us using causal generalizations to be an ex- cellent vehicle for representing all-important relations of manipulability. The third, based

  10. Solving the MultipleInstance Problem with AxisParallel Rectangles

    E-Print Network [OSTI]

    the following learning problem. Suppose there is a keyed lock on the door to the supply room in an office. Each staff members, their supply room key may open one or more other doors (e.g., their office door, the mail i ; result i ig. This situation is depicted in Figure 1(a). Each object is typically represented

  11. Management of Dish Concentrator Off-Axis Reflections G. Burgess, P. Scott, J. Preston and K. Lovegrove

    E-Print Network [OSTI]

    -state temperatures of the irradiated receiver trusses were modelled using Strand7 FEM software. A custom written ray of these high concentrations is that off-axis reflections from the dish mirror #12;Solar2010, the 48th Au from the ideal paraboloid. 2 adjusted to allow for the difference in the lunar to solar angular

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

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

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

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

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    Field mapping by off-axis electron holography: from devices to the detection of single dopant atoms. 3. Ernst-Ruska Center for Microscopy and Spectroscopy with Electrons, Research Centre Julich, D-52425 Julich, Germany. david.cooper@cea.fr Keywords: electron holography, dopant potentials, strain

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

    E-Print Network [OSTI]

    Dabiri, John O.

    Potential order-of-magnitude enhancement of wind farm power density via counter-rotating vertical an alternative approach to wind farming that has the potential to concurrently reduce the cost, size-axis wind turbine arrays John O. Dabiria) Graduate Aeronautical Laboratories and Bioengineering, California

  15. Growth and transfer of monolithic horizontal nanowire superstructures onto flexible substrates

    DOE Patents [OSTI]

    Wang, Zhong L; Xu, Sheng

    2013-08-27T23:59:59.000Z

    In a method of making a monolithic elongated nanowire, a mask polymer layer is applied to a selected crystal surface of a seed crystal. A plurality of spaced apart elongated openings is defined through the mask polymer layer, thereby exposing a corresponding plurality of portions of the crystal surface. The openings are disposed so as to be aligned with and parallel to a selected crystal axis of the seed crystal. The portions of the crystal surface are subjected to a chemical nutrient environment that causes crystalline material to grow from the plurality of portions for at least a period of time so that monocrystalline members grow from the elongated openings and until the monocrystalline members laterally expand so that each monocrystalline member grows into and merges with an adjacent one of the monocrystalline members, thereby forming a monolithic elongated nanowire.

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

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

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

  17. Facility Representatives

    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 Facilities | Department of Energy

  18. Facility Representatives

    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 Facilities | Department of Energy063-2011

  19. What every designated representative should know about Title IV and Title V enforcement provisions

    SciTech Connect (OSTI)

    Bischoff, C.A. [Gallagher and Kennedy, Phoenix, AZ (United States); Dayal, P. [Tucson Electric Power Co., Tucson, AZ (United States)

    1995-12-31T23:59:59.000Z

    Title IV of the Clean Air Act not only created a regulatory program unlike any other under the Clean Air Act, but also established a unique position--the designated representative--as an integral part of the program. The designated representative is required to meet certain basic obligations under Title IV, and a panoply of enforcement mechanisms are available to EPA in the event of noncompliance with these obligations. Also, because a designated representative may take on responsibilities under the permit provisions of Title V of the Clean Air Act, the designated representative can also be subject to an enforcement action for failure to comply with certain Title V permit requirements. This paper considers the basic definition of the designated representative under EPA`s Title IV and Title V regulations, identifies the responsibilities assigned to the designated representative, and then analyzes the enforcement mechanisms that may be applied to the designated representative if a regulatory responsibility has not been satisfied.

  20. A simulation study of steam and steam-propane injection using a novel smart horizontal producer to enhance oil production 

    E-Print Network [OSTI]

    Sandoval Munoz, Jorge Eduardo

    2004-11-15T23:59:59.000Z

    A 3D 8-component thermal compositional simulation study has been performed to evaluate the merits of steam-propane injection and a novel vertical-smart horizontal well system for the Lombardi reservoir in the San Ardo field, California. The novel...