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


1

24-CHANNEL GEOPHONE ARRAY FOR HORIZONTAL OR VERTICAL BOREHOLES  

SciTech Connect (OSTI)

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

Erik C. Westman

2003-10-24T23:59:59.000Z

2

Horizontal cell gap junctions: single-channel conductance and modulation by dopamine  

Science Journals Connector (OSTI)

...of 50-60 pS. The elementary conductance of channels...Dopamine pharmacology Electric Conductivity Intercellular...of 50-60 pS. The elementary conductance of channels...their num- ber or elementary conductance. METHODS...12). Electrode resistance measured in the bath...

D G McHahon; A G Knapp; J E Dowling

1989-01-01T23:59:59.000Z

3

Predictive model-based for the critical submergence of horizontal intakes in open channel flows with different clearance bottoms using CART, ANN and linear regression approaches  

Science Journals Connector (OSTI)

This study presents the development of classification and regression tree (CART), artificial neural network (ANN) and linear regression approaches to predict the critical submergence in an open channel flow for different clearance bottoms. To use the ... Keywords: ANN, CART, Critical submergence

Mohammad Karim Ayoubloo; H. Md. Azamathulla; Ebrahim Jabbari; Morteza Zanganeh

2011-08-01T23:59:59.000Z

4

Flow mapping for an ESS horizontal target  

SciTech Connect (OSTI)

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.

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

1997-12-01T23:59:59.000Z

5

Nonplanar fracture propagation from a horizontal wellbore: Experimental study  

SciTech Connect (OSTI)

This paper presents experimental results related to hydraulic fracturing of a horizontal well, specifically the nonplanar fracture geometries resulting from fracture initiation and propagation. Experiments were designed to investigate nonplanar fracture geometries. This paper discusses how these nonplanar fractures can be responsible for premature screenout and excessive treatment pressure when a horizontal well is hydraulically fractured. Reasons for unsuccessful hydraulic fracturing treatments of a horizontal well are presented and recommendations to ensure clear communication channels between the wellbore and the fracture are given.

Abass, H.H.; Hedayati, S.; Meadows, D.L.

1996-08-01T23:59:59.000Z

6

Horizontal Plate Plate  

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

Horizontal Plate Plate Horizontal Plate Plate Metadata also available as Metadata: Identification_Information Data_Quality_Information Spatial_Data_Organization_Information Spatial_Reference_Information Entity_and_Attribute_Information Distribution_Information Metadata_Reference_Information Identification_Information: Citation: Citation_Information: Originator: Ray George Publication_Date: Unknown Title: Horizontal Plate Plate Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: Description: Abstract: Monthly and annual average solar resource potential for the lower 48 states Purpose: Provide information on the solar resource potential for the lower 48

7

Horizontal well IPR calculations  

SciTech Connect (OSTI)

This paper presents the calculation of near-wellbore skin and non-Darcy flow coefficient for horizontal wells based on whether the well is drilled in an underbalanced or overbalanced condition, whether the well is completed openhole, with a slotted liner, or cased, and on the number of shots per foot and phasing for cased wells. The inclusion of mechanical skin and the non-Darcy flow coefficient in previously published horizontal well equations is presented and a comparison between these equations is given. In addition, both analytical and numerical solutions for horizontal wells with skin and non-Darcy flow are presented for comparison.

Thomas, L.K.; Todd, B.J.; Evans, C.E.; Pierson, R.G.

1996-12-31T23:59:59.000Z

8

ARM - Measurement - Horizontal wind  

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

govMeasurementsHorizontal wind govMeasurementsHorizontal wind ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Horizontal wind The horizontal wind in terms of either speed and direction, or the zonal (u) and meridional (v) components. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System DISDROMETER : Impact Disdrometer

9

Horizontal Advanced Tensiometer  

DOE Patents [OSTI]

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.

Hubbell, Joel M.; Sisson, James B.

2004-06-22T23:59:59.000Z

10

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

E-Print Network [OSTI]

1 Near wake properties of horizontal axis marine current turbines L. Myers and A.S. Bahaj wake region of a tidal current turbine is strongly driven by the combined wake of the device support-scale horizontal axis turbine has been have been measured in a large water channel facility. A downstream map

Quartly, Graham

11

Pressure analysis for horizontal wells  

SciTech Connect (OSTI)

This paper presents horizontal-well test design and interpretation methods. Analytical solutions are developed that can be handled easily by a desktop computer to carry out design as well as interpretation with semilog and log-log analysis. These analytical solutions point out the distinctive behavior of horizontal wells: (1) at early time, there is a circular radial flow in a vertical plane perpendicular to the well, and (2) at late time, there is a horizontal pseudoradial flow. Each type of flow is associated with a semilog straight line to which semilog analysis has to be adapted. The horizontal pseudoradial flow takes into account a pseudoskin depending on system geometry, which is a priori defined and estimated. Practical time criteria are proposed to determine the beginning and the end of each type of flow and to provide a guide to semilog analysis and well test design. The authors study the behavior of uniform-flux or infinite-conductivity horizontal wells, with wellbore storage and skin. The homogeneous reservoir is infinite or limited by impermeable or constant-pressure boundaries. A method is also outlined to transform all our solutions for homogeneous reservoirs into corresponding solutions for double-porosity reservoirs.

Davlau, F.; Mouronval, G.; Bourdarot, G.; Curutchet, P.

1988-12-01T23:59:59.000Z

12

Horizontal interest in industrial purchasing  

Science Journals Connector (OSTI)

Markets are becoming very complex and dynamic and in such an environment, firms can no longer merely focus their attention on key relationships in their downstream and upstream markets, but instead need to constantly monitor and make sense of the market around them. One area within these markets, that has been rather neglected within the current purchasing research are the other buyers in the market. The purpose of the present study is to examine the forms of horizontal interest in purchasing. The paper aims to answer the question: What are the forms of horizontal interest and how can these be incorporated into the functions of industrial purchasing? The paper applies theoretical knowledge and reports on an empirical case study conducted to address the question. As a result, a two-dimensional typology of the forms of horizontal interest and implications for industrial purchasing are presented.

Pauliina Ulkuniemi

2012-01-01T23:59:59.000Z

13

Nuclear component horizontal seismic restraint  

DOE Patents [OSTI]

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.

Snyder, Glenn J. (Lynchburg, VA)

1988-01-01T23:59:59.000Z

14

global horizontal | OpenEI  

Open Energy Info (EERE)

87 87 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142278787 Varnish cache server global horizontal Dataset Summary Description (Abstract): Documentation of the satellite-based high resolution solar resource assessment for Ghana provided by DLR. The high resolution solar data (10kmx10km) provide country maps of the annual and monthly sums of hourly global horizontal and direct normal irradiance (GHI and DNI) for the year 2000, 2001 and 2002. Additionally, for selected sites hourly values of GHI and DNI are provided.The Documentation gives an overview about the used input data and used methodology, shows example maps and describes a comparison with ground data (if provided by the country)

15

Drainage of a horizontal Boussinesq aquifer with a power law hydraulic conductivity profile  

E-Print Network [OSTI]

Drainage of a horizontal Boussinesq aquifer with a power law hydraulic conductivity profile David E] Solutions to the Boussinesq equation describing drainage into a fully penetrating channel have been used natural soils exhibit this characteristic. We derive a new set of analytical solutions to the Boussinesq

Selker, John

16

Hydraulic fracturing slurry transport in horizontal pipes  

SciTech Connect (OSTI)

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.

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

1990-09-01T23:59:59.000Z

17

A performance correlation of horizontal solar heaters  

E-Print Network [OSTI]

The solar heaters are shown tn Figure VI, page 31 30 Figure VI Horizontal Solar Heaters ~GLAZING AND FRAME ~~ POLYETHYLENE HEATERS THERMAL IN S U LA T I N 8 CELLS THERMOCOUPLES HORIZONTAL TABLE TOP THERMOCOUPLES COPPER LEADS TO CONTROL... The solar heaters are shown tn Figure VI, page 31 30 Figure VI Horizontal Solar Heaters ~GLAZING AND FRAME ~~ POLYETHYLENE HEATERS THERMAL IN S U LA T I N 8 CELLS THERMOCOUPLES HORIZONTAL TABLE TOP THERMOCOUPLES COPPER LEADS TO CONTROL...

Gopffarth, Wilford Hugo

2012-06-07T23:59:59.000Z

18

A HORIZONTAL SAMPLERFOR COLLECTION OF WATER ...  

Science Journals Connector (OSTI)

Kemmrrcr, and Frautschy bottles (Car. 1962). Although ... oxygen content of water collected with the Nan-. Frc. 1. Horizontal .... Power is transmitted from a 6-v.

1999-12-26T23:59:59.000Z

19

global horizontal irradiance | OpenEI  

Open Energy Info (EERE)

horizontal irradiance horizontal irradiance Dataset Summary Description (Abstract): Global Horizontal IrradianceNASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Jan 2008)22-year Monthly & Annual Average (July 1983 - June 2005) Parameter: Insolation Incident On A Horizontal Surface (kWh/m^2/day) Internet: http://eosweb.larc.nasa.gov/sse/ Note 1: SSE Methodology & Accuracy sections online Note 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; Source U.S. National Aeronautics and Space Administration (NASA), Surface meteorology and Solar Energy (SSE) Date Released March 31st, 2009 (5 years ago) Date Updated April 01st, 2009 (5 years ago) Keywords GHI GIS global horizontal irradiance NASA solar

20

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

DOE Patents [OSTI]

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

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

1982-01-01T23:59:59.000Z

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


21

Bakken shale typifies horizontal drilling success  

SciTech Connect (OSTI)

Given the favorable production response that has been obtained from horizontal drilling in vertical- fractured reservoirs such as the Bakken shale and, more recently, the Austin chalk, industry interest in this technology has mushroomed in the U.S. Indeed, it is difficult to find a good-sized oil company these days that is not involved in a horizontal drilling project or is giving it serious consideration. In response to growing evidence of successful field applications, the realization is dawning on the investment community that horizontal drilling represents a significant technological development with positive implications for both the exploration and production business, and the oilfield services industry.

Leibman, P.R. (Petrie Parkman and Co., Denver, CO (US))

1990-12-01T23:59:59.000Z

22

Horizontal gene transfer in Bacteroides fragilis   

E-Print Network [OSTI]

Horizontal gene transfer (HGT) is one of the man driving forces of evolution in prokaryotes, and can also promote within-strain variation of bacterial species. The genomes of three previously sequenced Bacteroides fragilis ...

Jobling, Kelly Louise

2014-11-27T23:59:59.000Z

23

Two-phase flow in horizontal wells  

SciTech Connect (OSTI)

Flow in horizontal wells and two-phase flow interaction with the reservoir were investigated experimentally and theoretically. Two-phase flow behavior has been recognized as one of the most important problems in production engineering. The authors designed and constructed a new test facility suitable for acquiring data on the relationship between pressure drop and liquid holdup along the well and fluid influx from the reservoir. For the theoretical work, an initial model was proposed to describe the flow behavior in a horizontal well configuration. The model uses the inflow-performance-relationship (IPR) approach and empirical correlations or mechanistic models for wellbore hydraulics. Although good agreement was found between the model and experimental data, a new IPR apart from the extension of Darcy`s law must be investigated extensively to aid in the proper design of horizontal wells.

Ihara, Masaru [Japan National Oil Corp., Chiba (Japan); Yanai, Koji [Nippon Kokan Corp., Yokohama (Japan); Yanai, Koji

1995-11-01T23:59:59.000Z

24

Discussion of productivity of a horizontal well  

SciTech Connect (OSTI)

The authors of this paper has been using several of the analytical equations and numerical simulation to evaluate the productivity of horizontal wells that have near-wellbore damage. Through this evaluation, the author found that here are inconsistencies in the way the skin factor is introduced into the analytical equations. This discussion shows the corrections needed in various analytical equations to obtain consistency with numerical simulation. In the numerical simulation shown here, skin factor is simulated by assignment of a reduced permeability to nodes near the well. The author would appreciate any comments Babu and Odeh could make on this aspect of horizontal wells.

Gilman, J.R. (Marathon Oil Company (US))

1991-02-01T23:59:59.000Z

25

Tables in Context: Integrating Horizontal Displays with  

E-Print Network [OSTI]

design challenges for tabletop interfaces: integrating access to public and private information, managing a cooperative gesture to organize digital documents on an interactive table. Our tabletop interface designTables in Context: Integrating Horizontal Displays with Ubicomp Environments Abstract Our work

Klemmer, Scott

26

Wayne field: A horizontal drilling case study  

SciTech Connect (OSTI)

Beginning in the spring of 1994, studies of Wayne field located on the northeastern flank of the Williston Basin were initiated to determine the feasibility of using horizontal drilling to increase recoverable reserves in the field. The Wayne subinterval is one of several shoaling-upwards cycles within the Mission Canyon Formation of the Mississippian Madison Group. The reservoir pay averages 24% porosity, 100 millidarcys permeability, and 50% water saturation. Vertical wells, since field discovery in 1957, typically IP for 70 bopd and 20% water with a rapid decline within a few months to 10 bopd and 90% water. This type of well performance is characteristic of severe water coning for which horizontal development can help to minimize. In late 1994 and early 1995 the Ballantyne Hedges No.7H and GeoResources O. Fossum No.H1 were drilled. The wells recorded IP`s of 280 bopd/5 bwpd and 390 bopd/80 bwpd respectively. After six months of production both wells stabilized at approximately 110 bopd with a 35% water cut. Projections indicate that each horizontal well will recover 250,000 bbls of oil as compared to 115,000 bbls for an average vertical well and will do so in half the time. These early results provide a significant improvement over the vertical production and would seem to be reducing water coning. Three more horizontal wells are planned for the fourth quarter of 1995.

Jennings, J.B. [GeoResources, Inc., Williston, ND (United States); Johnson, R.P. [Harris, Brown, & Kiemer, Inc., Bismarck, ND (United States)

1996-06-01T23:59:59.000Z

27

Economic viability of multiple-lateral horizontal wells  

E-Print Network [OSTI]

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...

Smith, Christopher Jason

2012-06-07T23:59:59.000Z

28

Sidewall containment of liquid metal with horizontal alternating magnetic fields  

DOE Patents [OSTI]

An apparatus is disclosed for confining molten metal with a horizontal alternating magnetic field. In particular, this invention employs a magnet that can produce a horizontal alternating magnetic field to confine a molten metal at the edges of parallel horizontal rollers as a solid metal sheet is cast by counter-rotation of the rollers. 19 figs.

Praeg, W.F.

1995-01-31T23:59:59.000Z

29

Generation of large-scale winds in horizontally anisotropic convection  

E-Print Network [OSTI]

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.

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

2015-01-01T23:59:59.000Z

30

Particle Impact Damping in the Horizontal Plane  

E-Print Network [OSTI]

and the acceleration of gravity g. Butt and Akl [2] performed a numerical analysis of an impact damper applied to a cantilever beam undergoing forced steady-state oscillations. The continuous beam was modeled as a multi-degree of freedom (MDOF) system rather than... packing ratio and vibration frequency. 5 Masri [8] developed an exact solution of the general steady-state response of a forced steady-state horizontally excited system with an impact damper. The motion of the system was taken as a piecewise...

Witt, Bryan

2012-07-16T23:59:59.000Z

31

Capacity of steganographic channels  

Science Journals Connector (OSTI)

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

Jeremiah J. Harmsen; William A. Pearlman

2005-08-01T23:59:59.000Z

32

Kick circulation analysis for extended reach and horizontal wells  

E-Print Network [OSTI]

loop to study gas removal in horizontal wellbores with an inclination greater than horizontal. His test setup consisted of outer pipe with an inner diameter of 6.37 in. and inner pipe with an outer diameter of 2.37 in. As gas and liquid were flowed... loop to study gas removal in horizontal wellbores with an inclination greater than horizontal. His test setup consisted of outer pipe with an inner diameter of 6.37 in. and inner pipe with an outer diameter of 2.37 in. As gas and liquid were flowed...

Long, Maximilian Mark

2005-02-17T23:59:59.000Z

33

Construction of Channels (Indiana)  

Broader source: Energy.gov [DOE]

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

34

Channel | Open Energy Information  

Open Energy Info (EERE)

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

35

Acid Placement in Acid Jetting Treatments in Long Horizontal Wells  

E-Print Network [OSTI]

In the Middle East, extended reach horizontal wells (on the order of 25,000 feet of horizontal displacement) are commonly acid stimulated by jetting acid out of drill pipe. The acid is jetted onto the face of the openhole wellbore as the drill pipe...

Sasongko, Hari

2012-07-16T23:59:59.000Z

36

Steerable vertical to horizontal energy transducer for mobile robots  

DOE Patents [OSTI]

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

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

2001-01-01T23:59:59.000Z

37

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

SciTech Connect (OSTI)

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.

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

1995-03-01T23:59:59.000Z

38

Method of positioning tubing within a horizontal well  

SciTech Connect (OSTI)

This patent describes a method of variably and selectively positioning coil tubing in a horizontally drilled well having a generally vertical section, a curve section and a generally horizontal section. It comprises securing a generally hollow tubing guide shoe to one end of a tubing string; inserting the tubing guide shoe and a portion of the tubing string through the generally vertical section and the curve section and into a portion of the generally horizontal section; and inserting coil tubing through the tubing string.

Young, C.E.

1992-06-02T23:59:59.000Z

39

Fraced horizontal well shows potential of deep tight gas  

SciTech Connect (OSTI)

Successful completion of a multiple fraced, deep horizontal well demonstrated new techniques for producing tight gas sands. In Northwest Germany, Mobil Erdgas-Erdoel GmbH drilled, cased, and fraced the world`s deepest horizontal well in the ultra-tight Rotliegendes ``Main`` sand at 15,687 ft (4,783 m) true vertical depth. The multiple frac concept provides a cost-efficient method to economically produce significant gas resources in the ultra-tight Rotliegendes ``Main`` sand. Besides the satisfactory initial gas production rate, the well established several world records, including deepest horizontal well with multiple fracs, and proved this new technique to develop ultra-tight sands.

Schueler, S. [Mobil Erdgas-Erdoel GmbH, Celle (Germany); Santos, R. [Mobil Erdgas-Erdoel GmbH, Hamburg (Germany)

1996-01-08T23:59:59.000Z

40

Horizontal Integration, an AS – Telecom Network Operations Case Study  

E-Print Network [OSTI]

Horizontal integration within the network operations department’s Wireless Data, VoIP, and IP teams will greatly improve network availability and quality of service to AS – Telecom customers by empowering employees, improving communication...

Kekovole, Stephen Andaye

2011-12-16T23:59:59.000Z

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


41

A New Quasi-Horizontal Glider to Measure Biophysical Microstructure  

Science Journals Connector (OSTI)

This study describes the development of a new tethered quasi-horizontal microstructure profiler: the Turbulence Ocean Microstructure Acquisition Profiler–Glider [TurboMAP-Glider (TMG)]. It is a unique instrument, capable of measuring ocean ...

Herminio Foloni-Neto; Rolf Lueck; Yoshiro Mabuchi; Hisato Nakamura; Masakazu Arima; Hidekatsu Yamazaki

2014-10-01T23:59:59.000Z

42

Activity Stream - Solar: monthly and annual average global horizontal...  

Open Energy Info (EERE)

global horizontal irradiance GIS data at one-degree resolution of the World from NASASSE 4 days ago Jay Huggins added the extra "catalog" to the dataset Solar: monthly and...

43

Simulation studies of waterflood performance with horizontal wells  

E-Print Network [OSTI]

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...

Ferreira, Horacio

1995-01-01T23:59:59.000Z

44

Borehole Stability Analysis of Horizontal Drilling in Shale Gas Reservoirs  

Science Journals Connector (OSTI)

Serious wellbore instability occurs frequently during horizontal drilling in shale gas reservoirs. The conventional forecast model of in ... not suitable for wellbore stability analysis in laminated shale gas for...

Jun-Liang Yuan; Jin-Gen Deng; Qiang Tan; Bao-Hua Yu…

2013-09-01T23:59:59.000Z

45

Horizontal Divergence Associated with Zonally Isolated Jet Streams  

Science Journals Connector (OSTI)

Horizontal divergence in the upper troposphere associated with zonally isolated jet streams in the climatological-mean fold for the Northern Hemisphere winter is examined by using the wind fields obtained from the NMC operational analyses in the ...

Hisashi Nakamura

1993-07-01T23:59:59.000Z

46

Refrigerant forced-convection condensation inside horizontal tubes  

E-Print Network [OSTI]

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 ...

Bae, Soonhoon

1968-01-01T23:59:59.000Z

47

A Triple-Porosity Model for Fractured Horizontal Wells  

E-Print Network [OSTI]

A TRIPLE-POROSITY MODEL FOR FRACTURED HORIZONTAL WELLS A Thesis by HASAN ALI H ALAHMADI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 2010 Major Subject: Petroleum Engineering A Triple-Porosity Model for Fractured Horizontal Wells Copyright 2010 Hasan Ali H Alahmadi A TRIPLE-POROSITY MODEL FOR FRACTURED...

Alahmadi, Hasan Ali H.

2010-10-12T23:59:59.000Z

48

Ion Channels as Devices  

Science Journals Connector (OSTI)

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

Bob Eisenberg

2003-12-01T23:59:59.000Z

49

Using LWD to drill horizontally above oil/water contacts  

SciTech Connect (OSTI)

This paper reports on the first successful horizontal oil well in the state of Arkansas which helped increase production from one Smackover field. This completion utilized resistivity logging during drilling and improved drainage patterns in the thin oil column, resulting in more effective reserve depletion. Midway Field Unit is located in Lafayette County of southwestern Arkansas. In addition to being the first successful horizontal well in Arkansas, Midway Field Units well 2-15 was also American Exploration's first horizontal well. The well was brought on line February 28, 1991 flowing 380 bopd and no water, and is currently producing oil on rod pump at about 200 bpd. This completion increased field production by 27%. A second horizontal well was drilled and the third completion of this type is now under way. Additional horizontal wells are planned for Midway field based on the success of the first two wells. This approach to depleting reserves in fields with by-passed reserves and thin oil columns like the Midway Unit has proven to be cost effective and efficient.

Trusty, J.E.; Emmet, L.R. (American Exploration Co., Houston, TX (US))

1992-03-01T23:59:59.000Z

50

Application of horizontal drilling to tight gas reservoirs  

SciTech Connect (OSTI)

Vertical fractures and lithologic heterogeneity are extremely important factors controlling gas flow rates and total gas recovery from tight (very low permeability) reservoirs. These reservoirs generally have in situ matrix permeabilities to gas of less than 0.1 md. Enhanced gas recovery methods have usually involved hydraulic fracturing; however, the induced vertical hydraulic fractures almost always parallel the natural fracture and may not be an efficient method to establish a good conduit to the wellbore. Horizontal drilling appears to be an optimum method to cut across many open vertical fractures. Horizontal holes will provide an efficient method to drain heterogeneous tight reservoirs even in unfractured rocks. Although many horizontal wells have now been completed in coalbed methane and oil reservoirs, very few have been drilled to exclusively evaluate tight gas reservoirs. The U.S. Department of Energy (DOE) has funded some horizontal and slanthole drilling in order to demonstrate the applicability of these techniques for gas development. Four DOE holes have been drilled in Devonian gas shales in the Appalachian basin, and one hole has been drilled in Upper Cretaceous tight sandstones in the Piceance basin of Colorado. The Colorado field experiment has provided valuable information on the abundance and openness of deeply buried vertical fractures in tight sandstones. These studies, plus higher gas prices, should help encourage industry to begin to further utilize horizontal drilling as a new exploitation method for tight gas reservoirs.

Spencer, C.W. (U.S. Geological Survey, Lakewood, CO (United States)); Lorenz, J.C. (Sandia National Labs., Albuquerque, NM (United States)); Brown, C.A. (Synder Oil Co., Denver, CO (United States))

1991-03-01T23:59:59.000Z

51

NONLINEAR PREDICTION OF MOBILE RADIO CHANNELS: MEASUREMENTS AND MARS MODEL DESIGNS  

E-Print Network [OSTI]

, Sweden (torbjorn.ekman@signal.uu.se) 2 Institute of Communications and Radio­Frequency Engineering typically show that there is little room for prediction of channel properties such as received power a short distance. A common approach is to assume that a large number of horizontal planar waves

52

Solar: annual and seasonal average global horizontal (GHI) GIS data  

Open Energy Info (EERE)

global horizontal (GHI) GIS data global horizontal (GHI) GIS data (contours) for Brazil from INPE and LABSOLAR Dataset Summary Description (Abstract): Annual and seasonal mean of Global Horizontal Solar Radiation in kWh/m2/day based on data from 1995 to 2002 (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders (Supplemental Information): The cross-calibration process worked with data from 3 ground stations: Caicó (located in the Northeast of Brazil), Florianópolis (located in the South) and Balbina (located in Amazonia). These data have been used for validation and comparison of radiation transfer models operated in SWERA to estimate the incidence of solar radiation on the surface of the country from satellite images

53

The Impact of using different parameterizations of unresolved horizontal  

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

The Impact of using different parameterizations of unresolved horizontal The Impact of using different parameterizations of unresolved horizontal variability of cloud water in the CCCma GCM Cole, Jason Meteorological Service of Canada Barker, Howard Meteorological Service of Canada Li, Jiangnan Canadian Center for Climate Modelling von Salzen, Knut Category: Modeling A current area of research in atmospheric radiative transfer involves description and inclusion of unresolved cloud structure in radiative transfer models that are used in global climate models (GCMs). One way of accounting for the structure of unresolved cloud in radiative transfer models is to use the Monte Carlo Independent Column Approximation (McICA) (see the poster by H. Barker). In this poster we focus on description of unresolved horizontal variability of cloud water. By using McICA in the GCM

54

Horizontal Beam Tubes - HFIR Technical Parameters | ORNL Neutron Sciences  

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

Horizontal Beam Tubes Horizontal 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 the HFIR instrument page. Each of the beam tubes that supply these instruments with neutrons is described subsequently. HB-1 and HB-3 The HB-1 and HB-3 thermal neutron beam tube designs are identical except for the length. Both are situated tangential to the reactor core so that the tubes point at reflector material and do not point directly at the fuel. An internal collimator is installed at the outboard end. This collimator is fabricated out of carbon steel and is plated with nickel. The collimator provides a 2.75-in by 5.5-in. rectangular aperture. A rotary shutter is located outboard of each of these beam tubes. The

55

MHK Technologies/Horizon Horizontal Platform | Open Energy Information  

Open Energy Info (EERE)

Horizontal Platform Horizontal Platform < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Horizon Horizontal Platform.jpg Technology Profile Primary Organization Elgen Wave Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description Horizon is an array of specialized point absorbers contained in an ultra stable floating platform The unique design of the platform causes it to be entirely unaffected by waves and swells allowing it to remain almost perfectly motionless Horizon converts energy on both the up and down strokes of the floats This oscillating bi directional motion is converted to a rotating mono directional motion by horizon s unique linear drive converters The output drive shaft is connected to a generator which in turn is connected to a transmission line laid on the ocean floor running to the utility grid on land

56

Tests show production logging problems in horizontal gas wells  

SciTech Connect (OSTI)

A study has concluded that production logging tools employed to evaluate multiphase horizontal well production behavior should be carefully screened as to their response characteristics in fully-segregated, two-phase flow. The study, performed at Marathon Oil Co.'s petroleum technology center in Littleton, Colo., indicated that gas in highly deviated well bores segregates rapidly in the presence of water, creating a downhole environment that produces sporadic responses from full bore and diverter spinners as well as density and holdup tools. Gas Research Institute (GRI), as part of its horizontal gas well completion technology program, initiated the full-scale laboratory study to determine the severity and consequences of multiphase flow on tool response from horizontal well production. The paper discusses background of the problem, the test objectives, test facility, experimental procedures, single-phase flow, two-phase flow, and recommendations.

Branagan, P. (Branagan and Associates, Las Vegas, NV (United States)); Knight, B.L. (Marathon Oil Co., Littleton, CO (United States)); Aslakson, J. (Gas Research Inst., Chicago, IL (United States)); Middlebrook, M.L. (CER Corp., Las Vegas, NV (United States))

1994-01-10T23:59:59.000Z

57

MHK Technologies/Horizontal Axis Logarithmic Spiral Turbine | Open Energy  

Open Energy Info (EERE)

Horizontal Axis Logarithmic Spiral Turbine Horizontal Axis Logarithmic Spiral Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Technology Profile Primary Organization Golden Turbines LLC Technology Resource Click here Current Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description A Horizontal axis Water turbine following the logarithmic spiral to generate clean electric energy from slow moving currents like rivers or ocean currents and with least impact on marine life and the environment because it doesn t require a damn or building huge structures Technology Dimensions Device Testing Date Submitted 36:09.5 << Return to the MHK database homepage

58

Method and apparatus for logging short radius horizontal drainholes  

SciTech Connect (OSTI)

This patent describes an apparatus for use in logging a short radius horizontal drainhole. It comprises: a tubing string having a low portion; the lower portion of the tubing string including sensor support means therein; the lower portion of the tubing string containing openings communicating with the interior thereof in the vicinity of the sensor support means to thereby exposed the interior to the pressure and temperature conditions of the horizontal drainhole; and the lower portion of the tubing string including an end portion extending transversely of the tubing sting.

Taylor, D.E.

1991-04-30T23:59:59.000Z

59

A Simplified Morphing Blade for Horizontal Axis Wind Turbines  

E-Print Network [OSTI]

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

Recanati, Catherine

60

Optimization of fractured well performance of horizontal gas wells  

E-Print Network [OSTI]

................................................24 3.4 Ideal Number of Transverse Fractures..........................................26 3.5 Constant Volume Transverse Fractures ........................................32 3.6... of a longitudinal fracture..............................................10 2.5 Example of horizontal well with longitudinal fracture performance .............11 2.6 DVS representation of transverse fractures...

Magalhaes, Fellipe Vieira

2009-06-02T23:59:59.000Z

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


61

Transverse horizontal spatial coherence of deep arrivals at megameter ranges  

Science Journals Connector (OSTI)

Predictions of transverse horizontal spatial coherence from path integral theory are compared with measurements for two ranges between 2000 and 3000 km. The measurements derive from a low-frequency (75 Hz) bottom-mounted source at depth 810 m near Kauai that transmitted m-sequence signals over several years to two bottom-mounted horizontal line arrays in the North Pacific. In this paper we consider the early arriving portion of the deep acoustic field at these arrays. Horizontal coherence length estimates on the order of 400 m show good agreement with lengths calculated from theory. These lengths correspond to about 1° in horizontal arrival angle variability using a simple extended spatially incoherent source model. Estimates of scintillation index log-amplitude variance and decibel intensity variance indicate that the fields were partially saturated. There was no significant seasonal variability in these measures. The scintillation index predictions agree quite well with the dataset estimates; nevertheless the scattering regime predictions (fully saturated) vary from the regime classification (partially saturated) inferred from observation. This contradictory result suggests that a fuller characterization of scattering regime metrics may be required.

Rex K. Andrew; Bruce M. Howe; James A. Mercer; The NPAL Group (J. A. Colosi, B. D. Cornuelle, B. D. Dushaw, M. A. Dzieciuch, B. M. Howe, J. A. Mercer, W. H. Munk, R. C. Spindel, and P. F. Worcester)

2005-01-01T23:59:59.000Z

62

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 trays made of sturdy plastic that can be easily washed. UL seal of approval is recommended for safety

63

Experimental investigation of a horizontal flexible-membrane wave barrier  

E-Print Network [OSTI]

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...

Choi, Hae-Jin

1997-01-01T23:59:59.000Z

64

Experimental and simulation studies of zone isolation in horizontal wells  

E-Print Network [OSTI]

wellbore plug in the horizontal section downstream of the problem zone, (iii) spotting and squeezing a formation gel in between the straddle wellbore plug system into the problem zone, and (iv) washing out the excess formation gel and the wellbore plug...

Tan, Joo Sitt

1997-01-01T23:59:59.000Z

65

Horizontal drilling the Bakken Formation, Williston basin: A new approach  

SciTech Connect (OSTI)

Horizontal drilling is an attractive new approach to exploration and development of the Mississippian/Devonian Bakken Formation in the southwestern part of North Dakota. This drilling technique increases the probability of success, the profit potential, the effective drainage area maximizing recoverable reserves, and the productivity by encountering more natural occurring fractures. The target formation, the Mississippian/Devonian Bakken, consists of three members in an overlapping relationship, a lower organic-rich black shale, a middle siltstone/limestone, and an upper organic-rich black shale. It attains a maximum thickness of 145 ft and thins to a feather edge along its depositional limit. Considered to be a major source rock for the Williston basin, the Bakken is usually overpressured where productive. Overpressuring is attributed to intense hydrocarbon generation. Reservoir properties are poor with core fluid porosities being generally 5% or less and permeabilities ranging from 0.1 to 0.2 md. The presence of natural fractures in the shale are necessary for production. Two types of fractures are associated with Bakken reservoirs: large vertical fractures (of tectonic origin) and microfractures (probably related to hydrocarbon generation). An economic comparison between horizontal and vertical wells show that well completion costs are approximately two times higher (average costs; $1,500,000 for a horizontal to $850,000 for a vertical) with average payout for horizontal wells projected to occur in half the time (1.5 yr instead of 3.4 yr). Projected production and reserves are considered to be 2 to 4 times greater from a horizontal well.

Lefever, J.A. (North Dakota Geological Survey, Grand Forks (USA))

1990-05-01T23:59:59.000Z

66

Response of Migrating Adult Salmonids to Vertical and Horizontal Rectangular  

E-Print Network [OSTI]

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

67

Quantum Channels with Memory  

E-Print Network [OSTI]

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

Dennis Kretschmann; Reinhard F. Werner

2005-02-17T23:59:59.000Z

68

Stochastic resonance for quantum channels  

Science Journals Connector (OSTI)

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

Julian Juhi-Lian Ting

1999-03-01T23:59:59.000Z

69

Athermalized channeled spectropolarimeter enhancement.  

SciTech Connect (OSTI)

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

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

2013-09-01T23:59:59.000Z

70

Results of the Second Diffuse Horizontal Irradiance IOP  

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

Results of the Second Diffuse Horizontal Irradiance IOP Results of the Second Diffuse Horizontal Irradiance IOP J. J. Michalsky Air Resources Laboratory National Oceanic and Atmospheric Administration Boulder, Colorado R. Dolce and A. Los Kipp & Zonen, Inc. Bohemia, New York E. G. Dutton and D. A. Nelson Climate Monitoring and Diagnostics Laboratory, National Oceanic and Atmospheric Administration Boulder, Colorado M. P. Haeffelin Ecole Polytechnique/ Laboratorie de Meteorologie Dynamique Palaiseau Cedex, France W. Q. Jeffries Yankee Environmental System, Inc. Turners Falls, Massachusetts T. L. Stoffel and I. Reda National Renewable Energy Laboratory Golden, Colorado J. Hickey Eppley Laboratory Inc. Newport, Rhode Island D. Mathias Carter-Scott Design Victoria, Australia L. J. B. McArthur

71

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

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

Diff Diff erent pretreatment chemistry/ residence time combinations are possible using these multiple horizontal-tube reactors * Each tube is indirectly and directly steam heated to temperatures of 150 0 C to 210 0 C * Residence time is varied by changing the speed of the auger that moves the biomass through each tube reactor * Tubes are used individually or in combination to achieve diff erent pretreatment residence times * Smaller tubes made from Hastelloy, an acid-resistant material, are used with more corrosive chemicals and residence times from 3 to 20 minutes * Larger tubes made from 316 stainless steel are used for residence times from 20 to 120 minutes Horizontal Pretreatment Reactor System Versatile pretreatment system for a wide range of pretreatment chemistries

72

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

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.

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

1981-03-05T23:59:59.000Z

73

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

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.

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

1983-11-08T23:59:59.000Z

74

Horizontal film balance having wide range and high sensitivity  

DOE Patents [OSTI]

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.

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

1983-01-01T23:59:59.000Z

75

A mathematical simulation of horizontal drain-hole performance  

E-Print Network [OSTI]

Science and Technology, Kee-Lung, Taiwan, Republic of China Chairman of Advisory Comnittee: Dr. Ching H. Wu The application of horizontal drain-hole in petroleum industry represents one of the new developments in oil recovery techniques. Many... production condition was simulated. The validity of the computational algorithm employed in the simulator was ascertained using the results obtained from a general purpose black oil simulator, BOSS-AIM. The verification runs were made under a semi...

Cheng, Thomas Ru-Kang

1984-01-01T23:59:59.000Z

76

Horizontal natural gas storage caverns and methods for producing same  

DOE Patents [OSTI]

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.

Russo, Anthony (Albuquerque, NM)

1995-01-01T23:59:59.000Z

77

Horizontal well improves oil recovery from polymer flood--  

SciTech Connect (OSTI)

Horizontal drilling associated with an injection scheme appears to be highly promising for obtaining additional oil recovery. Horizontal well CR 163H, in the Chateaurenard field is discussed. It demonstrated that a thin unconsolidated sand can be successfully drilled and cased. The productivity index (PI) of the well was much greater than vertical wells, and an unproduced oil bank was successfully intersected. On the negative side, it was necessary to pump low in a very deviated part of the well, and the drilling cost was high compared to an onshore vertical well. CR 163H was the fifth and probably most difficult horizontal well drilled by Elf Aquitaine. Located within a polymer-flood project, the target was a 7-m thick sand reservoir at a vertical depth of 590:0080 m. In this inverted seven-spot configuration with one injector in the center and six producers at a distance of 400 m, a polymer solution was injected from 1977 to 1983, followed by water injection.

Bruckert, L. (Elf Aquitaine, Boussens, (FR))

1989-12-18T23:59:59.000Z

78

THE HORIZONTAL BOUNDARY-LAYER STRUCTURE FOR THE CONVECTIVE REGIME IN A LATERALLY HEATED VERTICAL SLOT  

Science Journals Connector (OSTI)

......for the case when the horizontal walls of the slot are...and a main two-tier horizontal boundary layer is identified...closed form for the outer horizontal layer which is dominated...reactor cooling systems, solar collectors and cavity insulation......

P. G. DANIELS

1987-05-01T23:59:59.000Z

79

Communications Copper Horizontal Cable 27 15 13-1 SECTION 27 15 13  

E-Print Network [OSTI]

Communications Copper Horizontal Cable 27 15 13-1 SECTION 27 15 13 COMMUNICATIONS COPPER HORIZONTAL of category copper horizontal cable. B. The cable performance (category 5e, category 6A) shall be as specified 20 Copper Testing 5. 27 11 19 Communications Terminations Blocks and Patch Panels 6. 27 15 43

Dawson, Clint N.

80

QKD Quantum Channel Authentication  

E-Print Network [OSTI]

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

J. T. Kosloski

2006-04-02T23:59:59.000Z

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


81

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

South America from NREL South America from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate influences. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

82

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

Central America and the Carribean from NREL Central America and the Carribean from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate influences. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

83

Natural convection heat transfer from two horizontal cylinders  

SciTech Connect (OSTI)

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)

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

84

Hybrid Zero-capacity Channels  

E-Print Network [OSTI]

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

Sergii Strelchuk; Jonathan Oppenheim

2012-07-04T23:59:59.000Z

85

Channels on Mars  

Science Journals Connector (OSTI)

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

86

Channeling through Bent Crystals  

SciTech Connect (OSTI)

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

Mack, Stephanie; /Ottawa U. /SLAC

2012-09-07T23:59:59.000Z

87

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

East Asia from NREL East Asia from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

88

Zero Discharge Water Management for Horizontal Shale Gas Well Development  

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

Discharge Water Management for Discharge Water Management for Horizontal Shale Gas Well Development Final Report Start Date: October 1, 2009 End Date: March 31, 2012 Authors: Paul Ziemkiewicz, PhD Jennifer Hause Raymond Lovett, PhD David Locke Harry Johnson Doug Patchen, PG Report Date Issued: June 2012 DOE Award #: DE-FE0001466 Submitting Organization: West Virginia Water Research Institute West Virginia University PO Box 6064 Morgantown, WV 26506-6064 FilterSure, Inc. PO Box 1277 McLean, VA 22101 ShipShaper, LLP PO Box 2 Morgantown, WV 26507 2 | P a g e Acknowledgment "This material is based upon work supported by the Department of Energy under Award Number DE-FE0001466." Disclaimer "This report was prepared as an account of work sponsored by an agency of the United States

89

Gas flow in vertical slots with large horizontal temperature differences  

SciTech Connect (OSTI)

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

Chenoweth, D.R.; Paolucci, S.

1985-08-01T23:59:59.000Z

90

Dynamic stall occurrence on a horizontal axis wind turbine blade  

SciTech Connect (OSTI)

Surface pressure data from the National Renewable Energy Laboratory`s ``Combined Experiment`` were analyzed to provide a statistical representation of dynamic stall occurrence on a downwind horizontal axis wind turbine (HAWT). Over twenty thousand blade rotational cycles were each characterized at four span locations by the maximum leading edge suction pressure and by the azimuth, velocity, and yaw at which it occurred. Peak suction values at least twice that seen in static wind tunnel tests were taken to be indicative of dynamic stall. The occurrence of dynamic stall at all but the inboard station (30% span) shows good quantitative agreement with the theoretical limits on inflow velocity and yaw that should yield dynamic stall. Two hypotheses were developed to explain the discrepancy at 30% span. Estimates are also given for the frequency of dynamic stall occurrence on upwind turbines. Operational regimes were identified which minimize the occurrence of dynamic stall events.

Shipley, D.E.; Miller, M.S.; Robinson, M.C. [Colorado Univ., Boulder, CO (United States). Dept. of Aerospace Engineering Sciences

1995-07-01T23:59:59.000Z

91

Solar: monthly and annual average direct normal (DNI), global horizontal  

Open Energy Info (EERE)

Africa from NREL Africa from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to solar collectors. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

92

High-frequency shear-horizontal surface acoustic wave sensor  

DOE Patents [OSTI]

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.

Branch, Darren W

2014-03-11T23:59:59.000Z

93

Extremality conditions for generalized channels  

E-Print Network [OSTI]

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

Anna Jencova

2012-04-12T23:59:59.000Z

94

Productivity and injectivity of horizontal wells. Annual report, March 10, 1995--March 9, 1996  

SciTech Connect (OSTI)

The DOE approval for the annual renewal of the research grant to the Stanford Project on the Productivity and Injectivity of Horizontal Wells was received in early March 1995. Project goals include the advanced modeling of horizontal wells; investigation and incorporation of the effects of reservoir heterogeneities; development of improved methods of calculating multi-phase pressure drops within wellbores; development of multi-well models; testing of horizontal well models with field examples; EOR applications; and application studies and their optimization.

Aziz, K.; Hewett, T.

1996-05-01T23:59:59.000Z

95

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

E-Print Network [OSTI]

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

Evdokimova, Ekaterina

2013-01-01T23:59:59.000Z

96

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

SciTech Connect (OSTI)

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.

McDonald, W.J.

1993-06-03T23:59:59.000Z

97

An experimental study on heat transfer from a horizontal heated circular cylinder enhanced by water spray.  

E-Print Network [OSTI]

??A series of experiments were conducted to investigate the heat transfer which occurs with a heated, constant heat flux, horizontal, single circular cylinder is exposed… (more)

Chau, Man Hei

2009-01-01T23:59:59.000Z

98

Flow fields and heat transfer of liquid falling film on horizontal cylinders.  

E-Print Network [OSTI]

??A liquid film flowing over horizontal cylinders is of great importance as a high rate of heat transfer exists between the falling liquid film and… (more)

Jafar, Farial A

2011-01-01T23:59:59.000Z

99

Characteristics of multimode heat transfer in a differentially-heated horizontal rectangular duct.  

E-Print Network [OSTI]

??This study presents the numerical analysis of steady laminar flow heat transfer in a horizontal rectangular duct with differential heating on the vertical walls. Three… (more)

Wangdhamkoom, Panitan

2007-01-01T23:59:59.000Z

100

Open Source Projects as Horizontal Innovation Networks - By and for users  

E-Print Network [OSTI]

Innovation development, production, distribution and consumption networks can be built up horizontally – with actors consisting only of innovation users (more precisely, ...

von Hippel, Eric

2003-02-20T23:59:59.000Z

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


101

Natural Convection in a Horizontal Non-Flow-Through Reverse-Osmosis Cell  

Science Journals Connector (OSTI)

Features of the mass transfer in a horizontal non-flow-through reverse-osmosis cell are considered. It is concluded that...

N. B. Kirichenko

102

Subsurface horizontal microfracture propagation within the middle member of the Bakken Formation, Williston Basin, North Dakota.  

E-Print Network [OSTI]

??The Devonian-Mississippian Bakken Formation of the Williston basin does not outcrop. All rock samples are obtained by coring. Open, uncemented, horizontal mode I (joints, with… (more)

Warner, Travis Blackburn.

2011-01-01T23:59:59.000Z

103

Simulation and modeling of flow field around a horizontal axis wind turbine (HAWT) using RANS method.  

E-Print Network [OSTI]

??The principal objective of the proposed CFD analysis is to investigate the flow field around a horizontal axis wind turbine rotor and calculate the turbine's… (more)

Sargsyan, Armen.

2010-01-01T23:59:59.000Z

104

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

E-Print Network [OSTI]

Louisiana State University Abstract In oil well drilling, the efficient transport of drilled cuttings from pipe and excessive frictional pressure losses while drilling directional and horizontal oil wellsPREDICTION OF CUTTINGS BED HEIGHT WITH COMPUTATIONAL FLUID DYNAMICS IN DRILLING HORIZONTAL

Ullmer, Brygg

105

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

E-Print Network [OSTI]

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 oscillations and with the tower bending tendency. Keywords: LQG control, Wind turbines, Multi-objective control

Paris-Sud XI, Université de

106

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

E-Print Network [OSTI]

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

Zhan, Hongbin

107

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

SciTech Connect (OSTI)

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.

McDonald, W.J.

1994-06-01T23:59:59.000Z

108

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

SciTech Connect (OSTI)

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.

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

1995-03-01T23:59:59.000Z

109

The binary fraction of extreme horizontal branch stars  

E-Print Network [OSTI]

(Abbreviated) We have used precise radial velocity measurements of subdwarf-B stars from the Palomar-Green catalogue to look for binary extreme horizontal branch (EHB) stars. We identify 36 EHB stars in our sample and find that at least 21 of these stars are binaries. All but one or two of these are new identifications. The minimum binary fraction for EHB stars implied by our survey is 60+-8%. Our survey is sensitive to binaries with orbital periods P less than about 10d. For reasonable assumptions concerning the period distribution and the mass ratio distribution of the binaries, we find that the mean detection efficiency of our survey over this range of orbital periods is 87%. Allowing for this estimated detection efficiency, the fraction of EHB stars which are short-period binaries ($0.03 < P <10d, approximately) is 69+-9%. The value is not strongly dependent on the period distribution below P=10d or the mean companion mass for these short-period binaries. The orbital separation of the stars in these binaries is much less than the size of the red giant from which the EHB star has formed. This is strong evidence that binary star evolution is fundamental to the formation of the majority of EHB stars. If there are also binary EHB stars whose orbital periods are more than about 10d, the fraction of EHB stars whose evolution has been affected by the presence of a companion may be much higher.

P. F. L. Maxted; U. Heber; T. R. Marsh; R. C. North

2001-03-21T23:59:59.000Z

110

Horizontal well will be employed in hydraulic fracturing research  

SciTech Connect (OSTI)

This paper reports on 10-well research site, planned to enable more controlled experiments for better definition of hydraulic fracturing. One of the 10 wells will be a near-horizontal well that will monitor microseismic events along its length. The Gas Research Institute (GR) has begun evaluating a low-permeability, gas-bearing sandstone as the target stratum for experiments to be conducted at its hydraulic fracture test site (HFTS). During a 4-year period, GRI will use the HFTS as a field laboratory to conduct multi-disciplinary research projects to assess the mechanics of hydraulic fracturing. As a result of a screening process the Davis sandstone in the Ft. Worth basin has emerged as the tight gas sand which best fits the selected criteria established by GRI and its contractors, GRI says. The Ft. Worth basin is located approximately 50 miles northwest of Ft. Worth. GRI is planning a research well to fully characterize the Davis prior to making a final decision on the location of the HFTS. If data from the research well indicate the Davis sand does not adequately meet selection criteria, other candidates identified in the screening process will be investigated.

Not Available

1991-05-20T23:59:59.000Z

111

Structural analysis for horizontal storage of 9975 shipping packages  

SciTech Connect (OSTI)

This paper presents a nonlinear dynamic analysis for a 9975 shipping package to evaluate its structural response while stored in a horizontal assembly of packages. The structural response of the 9975 shipping package stored on a 24-inch-wide bottom rack while the upper two tiers of 9975 shipping packages are being loaded on top of it is analyzed. The upper two tiers of the packages are lifted by a forklift truck and then loaded onto the bottom tier of the packages. A nonlinear finite-element dynamic analysis with explicit time integration was performed for a 9975 shipping package to evaluate the consequence of the loading process described above. The effect of the impact load generated by the sudden release of the upper two tiers of the packages to the deformation of the bottom package is accounted for. The ABAQUS/Explicit computer code (Reference 1) was used to perform the computations. The time histories of the deflections and stresses were generated.

Wu, T.

2000-03-16T23:59:59.000Z

112

Global horizontal irradiance clear sky models : implementation and analysis.  

SciTech Connect (OSTI)

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.

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

2012-03-01T23:59:59.000Z

113

Majorization-preserving quantum channels  

E-Print Network [OSTI]

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

Lin Zhang

2012-09-24T23:59:59.000Z

114

Mirrored serpentine flow channels for fuel cell  

DOE Patents [OSTI]

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

Rock, Jeffrey Allan (Rochester, NY)

2000-08-08T23:59:59.000Z

115

Stability analysis of a borehole wall during horizontal directional drilling  

Science Journals Connector (OSTI)

In this paper, numerical simulation strategies are proposed and numerical analyses are performed to investigate the stability of a borehole wall during horizontal directional drilling in loose sand with an emphasis on the role of the filter cake in borehole stability. Two computational scenarios, one in the absence of a filter cake and one with the presence of a filter cake in a borehole wall, are investigated by considering both deep and shallow borehole situations. In the case where no filter cake is formed, the soil–drilling fluid interaction analysis shows that the effective pressure on soil particles will quickly decrease to zero even at a low drilling fluid pressure because of the rapid drainage of the drilling fluids into the loose sands. This conforms to the classical liquefaction criterion, indicating that static (flow) liquefaction-based soil crumbling and sloughing will occur even at a very low drilling fluid pressure if an effective filter cake is not formed. Soil’s permeability effect on pore pressure and the transition to a steady flow are also studied. In the second scenario in which a filter cake is formed, the hydraulic fracture failures around the bores are investigated, which are caused by the expansion of the yielding zones. The yield zone sizes and critical drilling fluid pressures at the moment of hydraulic fracturing failure are calculated from the finite element analyses and the closed-form solution, which is based on classical plasticity theories. The critical fluid pressures from the finite element analyses and the closed-form solutions are very close, but there is a large discrepancy between the yield zone sizes.

X. Wang; R.L. Sterling

2007-01-01T23:59:59.000Z

116

Negative particle planar and axial channeling and channeling collimation  

SciTech Connect (OSTI)

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

Carrigan, Richard A., Jr.; /Fermilab

2009-12-01T23:59:59.000Z

117

Analysis of IFR driver fuel hot channel factors  

SciTech Connect (OSTI)

Thermal-hydraulic uncertainty factors for Integral Fast Reactor (IFR) driver fuels have been determined based primarily on the database obtained from the predecessor fuels used in the IFR prototype, Experimental Breeder Reactor II. The uncertainty factors were applied to the channel factors (HCFs) analyses to obtain separate overall HCFs for fuel and cladding for steady-state analyses. A ``semistatistical horizontal method`` was used in the HCFs analyses. The uncertainty factor of the fuel thermal conductivity dominates the effects considered in the HCFs analysis; the uncertainty in fuel thermal conductivity will be reduced as more data are obtained to expand the currently limited database for the IFR ternary metal fuel (U-20Pu-10Zr). A set of uncertainty factors to be used for transient analyses has also been derived.

Ku, J.Y.; Chang, L.K.; Mohr, D.

1994-03-01T23:59:59.000Z

118

STANDARD LAN -1 Fiber Channel  

E-Print Network [OSTI]

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

Mellia, Marco

119

Horizontal coherence of low-frequency fixed-path sound in a continental shelf region with internal-wave activity  

E-Print Network [OSTI]

Horizontal coherence of low-frequency fixed-path sound in a continental shelf region with internal gain, horizontally lagged spatial correlation function, and coherent beam power. These quantities vary variations of three coher- ence measures, horizontal correlation length, array gain, and ratio of actual

120

SAFL Channel | Open Energy Information  

Open Energy Info (EERE)

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

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


121

On extreme Bosonic linear channels  

E-Print Network [OSTI]

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

A. S. Holevo

2011-11-15T23:59:59.000Z

122

Energy spectrum of cascade showers generated in water by near-horizontal muons  

Science Journals Connector (OSTI)

We discuss measuring cascade shower energy using the NEVOD Cherenkov water detector with ... applied to showers generated by near-horizontal high-energy muons selected using the DECOR coordinate detector deployed...

S. S. Khokhlov; N. S. Barbashina…

2013-05-01T23:59:59.000Z

123

Estimation and Impact of Nonuniform Horizontal Correlation Length Scales for Global Ocean Physical Analyses  

Science Journals Connector (OSTI)

Optimally modeling background-error horizontal correlations is crucial in ocean data assimilation. This paper investigates the impact of releasing the assumption of uniform background-error correlations in a global ocean variational analysis ...

Andrea Storto; Simona Masina; Srdjan Dobricic

2014-10-01T23:59:59.000Z

124

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

E-Print Network [OSTI]

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 ...

Auchtung, Jennifer M

2006-01-01T23:59:59.000Z

125

Multivariate recurrence network analysis for characterizing horizontal oil-water two-phase flow  

Science Journals Connector (OSTI)

Characterizing complex patterns arising from horizontal oil-water two-phase flows is a contemporary and challenging problem of paramount importance. We design a new multisector conductance sensor and systematically carry out horizontal oil-water two-phase flow experiments for measuring multivariate signals of different flow patterns. We then infer multivariate recurrence networks from these experimental data and investigate local cross-network properties for each constructed network. Our results demonstrate that a cross-clustering coefficient from a multivariate recurrence network is very sensitive to transitions among different flow patterns and recovers quantitative insights into the flow behavior underlying horizontal oil-water flows. These properties render multivariate recurrence networks particularly powerful for investigating a horizontal oil-water two-phase flow system and its complex interacting components from a network perspective.

Zhong-Ke Gao; Xin-Wang Zhang; Ning-De Jin; Norbert Marwan; Jürgen Kurths

2013-09-13T23:59:59.000Z

126

Erratum: Horizontal equity in health care utilization in Brazil, 1998-2008  

Science Journals Connector (OSTI)

While the article entitled Horizontal equity in health care utilization in Brazil, 1998–2008 [1] was being prepared for publication, a typographical error was introduced in the methods section. The sentence “The ...

James Macinko; Maria Fernanda Lima-Costa

2014-11-01T23:59:59.000Z

127

Numerical Study of Heavy Oil Flow on Horizontal Pipe Lubricated by Water  

Science Journals Connector (OSTI)

This chapter reports information related to multiphase flow with emphasis to core-annular flow. Industrial application has been given to transient water-heavy ultraviscous oil two-phase flow in horizontal pipe...

Tony Herbert Freire de Andrade…

2012-01-01T23:59:59.000Z

128

Mathematical Model for Heavy Oil–Water–Gas Stratified Flow in Horizontal Pipes  

Science Journals Connector (OSTI)

A one-dimensional, isothermal, transient model for the stratified flow of heavy oil, water and gas, in horizontal pipelines, is presented. The two-fluid mathematical model consists of mass, momentum and energy...

C. Centeno-Reyes; O. Cazarez-Candia

2012-01-01T23:59:59.000Z

129

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

Science Journals Connector (OSTI)

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

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

130

Detection of water or gas entry into horizontal wells by using permanent downhole monitoring systems  

E-Print Network [OSTI]

because geothermal temperature differences in depth make the wellbore temperature sensitive to the amount and the type of fluids flowing in the wellbore. Geothermal temperature does not change, however, along a horizontal wellbore, which leads to small...

Yoshioka, Keita

2007-09-17T23:59:59.000Z

131

Study of natural convection heat transfer above a horizontal heated plate using a laser specklegram technique  

E-Print Network [OSTI]

Heat transfer by free convection in air from an isothermal horizontal heated flat plate facing upward has been experimentally studied by using a non intrusive and accurate optical technique, Speckle photography or a specklegram technique. The local...

Cheeti, Satish K.R.

2012-06-07T23:59:59.000Z

132

Biomass gasification using a horizontal entrained-flow gasifier and catalytic processing of the product gas.  

E-Print Network [OSTI]

??A novel study on biomass-air gasification using a horizontal entrained-flow gasifier and catalytic processing of the product gas has been conducted. The study was designed… (more)

Legonda, Isack Amos

2012-01-01T23:59:59.000Z

133

Pressure Transient Analysis for Multi-stage Fractured Horizontal Wells in Shale Gas Reservoirs  

Science Journals Connector (OSTI)

This article presents the PTA on the multi-stage fractured horizontal well in shale gas reservoirs incorporating desorption and diffusive flow in ... considering the mechanisms of desorption and diffusion in shale

Jingjing Guo; Liehui Zhang; Haitao Wang; Guoqing Feng

2012-07-01T23:59:59.000Z

134

Effects of horizontal mixing on the upper ocean temperature in the equatorial Pacific Ocean  

Science Journals Connector (OSTI)

The influence of horizontal mixing on the thermal structure of the equatorial Pacific Ocean is examined based on a sigma coordinate ... on the upper thermal structure in the equatorial Pacific Ocean, while their ...

Chuanjiang Huang; Fangli Qiao

2012-01-01T23:59:59.000Z

135

Instability of Hadley–Prats Flow with Viscous Heating in a Horizontal Porous Layer  

Science Journals Connector (OSTI)

The onset of convective rolls instability in a horizontal porous layer subject to a basic temperature gradient inclined with respect to gravity is investigated. The basic velocity has a linear profile with a non-...

A. Barletta; D. A. Nield

2010-09-01T23:59:59.000Z

136

Similarity parameters and a centrifugal convective instability of horizontally inhomogeneous circulations of the Hadley type  

Science Journals Connector (OSTI)

The stability of the zonal axisymmetric quasi-geostrophic hydrostatic solution to the equations of atmospheric dynamics that is determined by the horizontal temperature gradient is studied. Time-dependent regi...

E. B. Gledzer

2008-02-01T23:59:59.000Z

137

The impact of long-distance horizontal gene transfer on prokaryotic genome size  

E-Print Network [OSTI]

Horizontal gene transfer (HGT) is one of the most dominant forces molding prokaryotic gene repertoires. These repertoires can be as small as ?200 genes in intracellular organisms or as large as ?9,000 genes in large, ...

Cordero Sanchez, Otto Xavier

138

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

E-Print Network [OSTI]

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...

Shamburger, Carl Brian

2012-06-07T23:59:59.000Z

139

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

E-Print Network [OSTI]

. Chevalier An experimental and theoretical investigation of a horizontal-axis wind energy conversion device utilizing straight blades as the force- producing surfaces was conducted. The blades were mounted horizontally between two rotating discs and were... positioned with a mechanical cern system to produce the maximum torque at every point around the revolution. The wind turbine was tested in a 7 x 10 ft low speed wind tunnel. The device converted over 20 percent of the energy available in the wind...

Milburn, Robert Terrance

2012-06-07T23:59:59.000Z

140

Evaluation of a slotted orifice plate flow meter using horizontal two phase flow  

E-Print Network [OSTI]

of MASTER OF SCIENCE December 2000 Major Subject: Mechanical Engineering EVALUATION OF A SLOTTED ORIFICE PLATE FLOW METER USING HORIZONTAL TWO PHASE FLOW A Thesis by ANITA ELENA FLORES Submitted to Texas A&M University in partial fulfillment...: Mechanical Engineering ABSTRACT Fvaluation of a Slotted Orifice Plate Flow Meter Using Horizontal Two Phase Flow. (December 2000) Anita Elena Flores, B. S. , Texas A&M I Jniversitv Chair of Advisory Committee: Dr. Herald L. Morrison In the past several...

Flores, Anita Elena

2012-06-07T23:59:59.000Z

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


141

An experimental study of horizontal barrier formation and containment of NAPLs by gelling liquids  

E-Print Network [OSTI]

[1990], much of the research on this topic can be found only in copies of company reports. Aul and Cervtk [1979] developed a method for grouting horizontal drainage holes in coalbeds. Karol [1990] noted that there has been a growing acceptance... grout for plugging horizontal methane-drainage holes. Lowther and Gabr [1997] experimented with urethane, a different grout, for the formation of hydraulic barriers. Voss et al. [1994] and May et al. [1986] studied chemical grouts for constructing...

Durmusoglu, Ertan

2012-06-07T23:59:59.000Z

142

Memory effects in quantum channel discrimination  

E-Print Network [OSTI]

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

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

2008-03-21T23:59:59.000Z

143

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

SciTech Connect (OSTI)

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.

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

144

Entanglement Cost of Quantum Channels  

E-Print Network [OSTI]

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

Mario Berta; Fernando Brandao; Matthias Christandl; Stephanie Wehner

2011-08-26T23:59:59.000Z

145

A Fuel Channel Design for CANDU-SCWR  

SciTech Connect (OSTI)

The CANDU{sup R}-Supercritical Water Reactor (CANDU-SCWR) is one of the six reactor concepts being considered by the Generation-IV International Forum (GIF) for international collaborative R and D. With SCW coolant, the thermodynamic efficiency is increased to over 40%. The CANDU-SCWR is moderated using heavy water, and it has fuel bundles residing inside horizontal pressure tubes, similar to the current CANDU design. The coolant, however, is light water at 25 MPa, with an inlet temperature of 350 deg. C and an outlet temperature of 625 deg. C. Because of the high temperature and high pressure of the coolant, the standard CANDU pressure tube design cannot be used. This paper presents one of the insulated pressure tube designs being considered for the CANDU-SCWR fuel channels. Unlike current CANDU reactors, the proposed CANDU-SCWR fuel channel does not use calandria tubes to separate the pressure tubes from the moderator. Each pressure tube is in direct contact with the moderator, which operates at an average temperature of about 80 deg. C. The pressure tube is thermally insulated from the hot coolant by a porous ceramic insulator. A perforated metal liner protects the insulator from being damaged by the fuel bundles and erosion by the coolant. The coolant pressure is transmitted through the perforated metal liner and insulator and applied directly to the relatively cold pressure tube. The material selection for each fuel channel component depends on its function. The fuel sheaths and the perforated liner must have high corrosion resistance in SCW, although their resident times are significantly different. The insulator must have high thermal resistance and corrosion resistance in SCW, plus sufficient strength to bear the weight of the fuel bundles without significant thickness reduction during its design life. The pressure tube is the pressure boundary material, so it must have high strength to contain the coolant. One common requirement for all in-core fuel channel components is that they should be as neutron transparent as possible. The irradiation deformation of all these components must also be considered in their design. This paper presents the design of this fuel channel, reviews existing data for materials, indicates where more data are required, and summarizes our plans to obtain these data. (authors)

Chow, C.K.; Bushby, S.J.; Khartabil, H.F. [Atomic Energy of Canada, Ltd. (Canada)

2006-07-01T23:59:59.000Z

146

Development of general inflow performance relationships (IPR's) for slanted and horizontal wells producing heterogeneous solution-gas drive reservoirs  

SciTech Connect (OSTI)

Since 1968, the Vogel equation has been used extensively and successfully for analyzing the inflow performance relationship (IPR) of flowing vertical wells producing by solution-gas drive. Oil well productivity can be rapidly estimated by using the Vogel IPR curve and well outflow performance. With recent interests on horizontal well technology, several empirical IPRs for solution-gas drive horizontal and slanted wells have been developed under homogeneous reservoir conditions. This report presents the development of IPRs for horizontal and slanted wells by using a special vertical/horizontal/slanted well reservoir simulator under six different reservoir and well parameters: ratio of vertical to horizontal permeability, wellbore eccentricity, stratification, perforated length, formation thickness, and heterogeneous permeability. The pressure and gas saturation distributions around the wellbore are examined. The fundamental physical behavior of inflow performance for horizontal wells is described.

Cheng, A.M.

1992-04-01T23:59:59.000Z

147

Development of an inflow performance relationship (IPR) for a slanted/horizontal well  

SciTech Connect (OSTI)

Since 1968, the Vogel equation has been used extensively and successfully for analyzing the inflow performance relationship (IPR) of flowing oil wells under solution-gas drive. Oil well productivity can be rapidly estimated using the Vogel IPR curve and well outflow performance. However, the Vogel curve was originally developed for conventional vertical wells and may not be valid for slanted and horizontal wells. This report presents the development of IPR's for slanted and horizontal wells by using a vertical/horizontal/slanted well reservoir simulator. The generated IPR's are found to be similar to the parabolic characteristic of the Vogel curve. Several application examples are included to illustrate the use of the newly generated curves. 12 refs., 15 figs., 25 tabs.

Cheng, A.M.

1990-03-01T23:59:59.000Z

148

Case study of a horizontal well in a layered Rotliegendes gas field  

SciTech Connect (OSTI)

A horizontal well was drilled in the Ravenspurn North field to drain a thin gas column above the aquifer. The field has a significant variation in reservoir quality, with most of the wells requiring stimulation by hydraulic fracturing. The reservoir is formed from a stacked sequence of aeolian dune and fluvial sandstones with a wide permeability range. The horizontal well was chosen as an alternative to stimulation by hydraulic fracturing to avoid water production from the aquifer. The well was successful, flowing at higher gas rates than expected with no water production. Production, core, and production logging data were used to demonstrate greater than expected lateral heterogeneity in the field. The horizontal well was found to be appropriate for the very specific conditions found in one part of the reservoir; however, the overall development strategy of using hydraulic fracture remains the preferred technique.

Catterall, S.J.A.; Yaliz, A. (Hamilton Oil Co. Ltd., London (United Kingdom))

1995-02-01T23:59:59.000Z

149

Chapter 7 - Horizontally Integrated Remote Measurements of Ocean Currents Using Acoustic Tomography Techniques  

Science Journals Connector (OSTI)

Abstract This chapter begins with a discussion of the comparative difficulty of measuring horizontally integrated subsurface oceanic current and vorticity measurements. This is followed by a discussion of computer-assisted tomography techniques used in the medical, geophysical, and seismic branches of science and their adaptation and extension to acoustic tomography for subsurface oceanographic investigations. In particular, the following aspects pertaining to the application of acoustic methods for probing the oceans’ interior water temperature and current structure, as well as their adaptations for measuring horizontally averaged water currents from straits, coastal water bodies, estuaries, and rivers, are addressed: (1) one-way tomography, (2) two-way tomography (reciprocal tomography), (3) acoustic tomographic measurements from straits, (4) coastal acoustic tomography (CAT), (5) river acoustic tomography (RAT), (6) acoustic tomographic measurements of vorticity, and (7) horizontally integrated current measurements using space-time acoustic scintillation analysis technique.

Antony Joseph

2014-01-01T23:59:59.000Z

150

A feasibility study on the horizontal emplacement concept in terms of operational aspects  

SciTech Connect (OSTI)

Based on the H12 study, two emplacement variants were initially considered - namely, vertical (in pits) and horizontal emplacement (in tunnels) in the Japanese HLW disposal programme. The horizontal emplacement design may possibly be more economical than the vertical design due to smaller excavation volume, however, several aspects such as quality assurance (QA), operational safety and logistics have been questioned. In this paper, the feasibility of the operation system for horizontal emplacement with several buffer options (e.g. bentonite block, pellets, in-situ compaction and prefabricated engineered barrier system module) is reported in terms of operational practicality, particularly logistics. The results show that the prefabricated engineered barrier system module (PEM) option could be advantageous and implemented more easily due to the much simpler emplacement process in an underground facility. (authors)

Sato, S.; Noda, M.; Matsuda, T. [Obayashi corporation, Tokyo (Japan); Sakabe, Y.; Hyodo, H.; Sugita, Y. [Nuclear Waste Management Organization of Japan (NUMO), Tokyo (Japan); Jintoku, T. [Ishikawajima-Harima Heavy Industries Co., Ltd. (IHI), Yokohama, Kanagawa (Japan)

2007-07-01T23:59:59.000Z

151

Solar: monthly and annual latitude tilt horizontal GIS data at 40km  

Open Energy Info (EERE)

latitude tilt horizontal GIS data at 40km latitude tilt horizontal GIS data at 40km resolution for Nepal from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for flat-plate collectors tilted at latitude for Nepal. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal equal to the latitude of the collector location. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The

152

A Model For The Transient Temperature Effects Of Horizontal Fluid Flow In  

Open Energy Info (EERE)

Transient Temperature Effects Of Horizontal Fluid Flow In Transient Temperature Effects Of Horizontal Fluid Flow In Geothermal Systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Model For The Transient Temperature Effects Of Horizontal Fluid Flow In Geothermal Systems Details Activities (1) Areas (1) Regions (0) Abstract: A characteristic temperature versus depth (T-D) profile is observed in various geothermal environments. Particular features of the T-D profile can be explained in terms of a simple time-dependent two-dimensional (x, z) hydrothermal model. In this model a hot fluid is constrained to flow along a thin aquifer buried at a depth l from the surface with conductive heat transfer into the rocks both above and below the aquifer. In many geothermal systems transient changes in the flow

153

Randomization theorems for quantum channels  

E-Print Network [OSTI]

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

Anna Jencova

2014-04-15T23:59:59.000Z

154

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

E-Print Network [OSTI]

COMPARISON OF DAY AND NIGHT VEHICULAR SPEEDS ON HORIZONTAL CURVES ON RURAL TWO-LANE HIGHWAYS A Thesis by JESUS GUZMAN, JR. Submitted to the OI5ce of Graduate Studies of Texas AkM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1996 Major Subject: Civil Engineering COMPARISON OF DAY AND NIGHT VEHICULAR SPEEDS ON HORIZONTAL CURVES ON RURAL TWO-LANE HIGHWAYS A Thesis by JESUS GUZMAN, JR. Submitted to Texas ARM University in partial...

Guzman, Jesus

2012-06-07T23:59:59.000Z

155

Enfim só:: um olhar sobre o universo de pessoas idosas que moram sozinhas no município de Belo Horizonte (MG), 2007.  

E-Print Network [OSTI]

??The aim of the present study was to investigate different aspects related to elderly who live alone in the city Belo Horizonte, state of Minas… (more)

Mirela Castro Santos Camargos

2008-01-01T23:59:59.000Z

156

Two-Dimensional Computational Fluid Dynamics and Conduction Simulations of Heat Transfer in Horizontal Window Frames with Internal Cavities  

E-Print Network [OSTI]

the two-dimensional heat transfer through building products.Gustavsen, A. 2001. Heat transfer in window frames withand CFD Simulations of Heat Transfer in Horizontal Window

Gustavsen, Arlid

2008-01-01T23:59:59.000Z

157

Productivity and injectivity of horizontal wells. Annual report for the period, March 10, 1994--March 9, 1995  

SciTech Connect (OSTI)

Contents of this annual report include the following: (1) detailed well model for reservoir simulation--task 1; (2) comparative aspects of coning behavior in vertical and horizontal wells--task 1; (3) skin factor calculations for vertical, deviated, and horizontal wells--task 2; (4) a dissipation-based coarse grid system and its application to the scaleup of two phase problems--tasks 2 and 4; (5) analyses of experiments at Marathon Oil Company--task 3; (6) development of mechanistic model for multiphase flow in horizontal wells--task 3; and (7) sensitivity studies of wellbore friction and inflow for a horizontal well--task 8.

Fayers, F.J.

1995-07-01T23:59:59.000Z

158

Ion transport through cell membrane channels  

E-Print Network [OSTI]

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

Jan Gomulkiewicz; Jacek Miekisz; Stanislaw Miekisz

2007-06-05T23:59:59.000Z

159

Single channel flow blockage accident phenomena identification and ranking table (PIRT) for the advanced Candu reactor  

SciTech Connect (OSTI)

The Advanced Candu Reactor (ACRTM) is an evolutionary advancement of the current Candu 6{sup R} reactor, aimed at producing electrical power for a capital cost and at a unit-energy cost significantly less than that of the current reactor designs. The ACR retains the modular concept of horizontal fuel channels surrounded by a heavy water moderator, as with all Candu reactors. However, ACR uses slightly enriched uranium (SEU) fuel, compared to the natural uranium used in Candu 6. This achieves the twin goals of improved economics (e.g., via reductions in the heavy water requirements and the use of a light water coolant), as well as improved safety. This paper documents the results of Phenomena Identification and Ranking Table (PIRT) results for a very limited frequency, beyond design basis event of the ACR design. This PIRT is developed in a highly structured process of expert elicitation that is well supported by experimental data and analytical results. The single-channel flow blockage event in an ACR reactor assumes a severe flow blockage of one of the reactor fuel channels, which leads to a reduction of the flow in the affected channel, leading to fuel cladding and fuel temperature increase. The paper outlines the design characteristics of the ACR reactor that impact the PIRT process and computer code applicability. It also describes the flow blockage phenomena, lists all components and systems that have an important role during the event, discusses the PIRT process and results, and presents the finalized PIRT tables. (authors)

Popov, N.K.; Abdul-Razzak, A.; Snell, V.G.; Langman, V. [Atomic Energy of Canada Ltd., 2251 Speakman Drive, Mississauga, Ontario, L5K 1B2 (Canada); Sills, H. [Consultant, Deep River, Ontario (Canada)

2004-07-01T23:59:59.000Z

160

Generic theory for channel sinuosity  

Science Journals Connector (OSTI)

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

Eli D. Lazarus; José Antonio Constantine

2013-01-01T23:59:59.000Z

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


161

Solar: annual average global horizontal (GHI) GIS data at 10km resolution  

Open Energy Info (EERE)

global horizontal (GHI) GIS data at 10km resolution global horizontal (GHI) GIS data at 10km resolution for Cuba from SUNY Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate solar collectors for Cuba (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a horizontal flat-plate solar collector, such as a Photovoltaic (PV) solar panel. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 10 km by 10 km in size. The solar resource value is represented as kilowatt-hours per square meter per day for each month. The data were developed from the State University of New York's (SUNY) GOES satellite solar model. This model uses information on hourly satellite observed visible irradiance, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total of the normal or beam insolation falling on a tracking concentrator pointed

162

Response of a slotted plate flow meter to horizontal two phase flow  

E-Print Network [OSTI]

meter is always better in performance and accuracy than the standard orifice plate flow meter. This study is primarily based on how a slotted plate responds to horizontal two-phase flow with air and water being used as the working fluids. The plates...

Muralidharan, Vasanth

2005-02-17T23:59:59.000Z

163

A Low-Cost System for Measuring Horizontal Winds from Single-Engine Aircraft  

Science Journals Connector (OSTI)

The implementation and accuracy of a low-rate (~1 Hz) horizontal wind measurement system is described for a fixed-wing aircraft without modification to the airframe. The system is based on a global positioning system (GPS) compass that provides ...

Stephen A. Conley; Ian C. Faloona; Donald H. Lenschow; Anna Karion; Colm Sweeney

2014-06-01T23:59:59.000Z

164

Application of short-radius horizontal boreholes in the naturally fractured Yates field  

SciTech Connect (OSTI)

This paper discusses the performance and simulation of short-radius horizontal boreholes being used in the Marathon-operated Yates field Unit in west Texas to minimize drawdown and therefore to reduce gas and water coning in a thin oil column. Yates is a very prolific field with extensive fracturing and high-quality reservoir rock. Superimposed on a high-density orthogonal fracture network are widely spaced regional joints with a strong directional tendency. Major questions are how these directional joints affect the horizontal-well performance and whether wells should be drilled parallel or perpendicular to the joints. Dual-permeability reservoir simulation studies were performed to study optimum orientation of the borehole with respect to the natural fracture network. Additionally, optimum well-completion elevation was studied. Forty-six vertical wells have been recompleted as short-radius horizontal boreholes since 1986. The large productivity increase of the horizontal boreholes compared with the previous vertical completions indicates that the wells are intersecting the regional joints.

Gilman, J.R.; Rothkopf, B.W. (Marathon Petroleum Technology Center, Littleton, CO (United States)); Bowzer, J.L. (Marathon Oil Co., Midland, TX (United States))

1995-02-01T23:59:59.000Z

165

Productivity and injectivity of horizontal wells. Quarterly report, July 1, 1994--September 30, 1994  

SciTech Connect (OSTI)

This quarterly report is entirely devoted to presenting samples of the results of the data analyses for horizontal drilling studies. In addition, a data compilation of Excel worksheets containing data on two-phase flow measurements at the Marathon Oil Company is discussed. Complete data analyses will be presented in the next annual report.

Fayers, F.J.

1995-01-01T23:59:59.000Z

166

Coorelations for cresting behavior in horizontal wells. Quarterly report, October 1, 1996--December 31, 1996  

SciTech Connect (OSTI)

The following activities have been carried out in the last three months. (1) The fourth review meeting of the Horizontal Well Industrial Affiliates Program was held on October 10-11 at Stanford. The meeting was well attended and well received. In addition to the project presentations, a number of member presentations were also made at the meeting. (2) Draft plans for the continuation of the two-phase flow experiments were drawn up and sent to Marathon and other members for their review and comments. Series of new experiments with and without the wire wrapped screens used in 1996 are being considered for 1997. (3) Work on the application of horizontal wells for producing gas condensate reservoirs was continued. After verification of the black oil formulation, emphasis is being put on the compositional case where simulation runs have been set up to check the results against a semi-analytical solution. (4) The previous work on the effects of heterogeneities on horizontal well performance was continued and a paper on the subject was completed. Future work in this area will deal with a careful analysis of the interaction of heterogeneity and production performance. (5) Research work on developing coarse grid methods to study cresting in horizontal wells was continued. The previous correlations for optimum grid size, breakthrough time, and post breakthrough behavior (i.e., water-oil ratio) were further tested and optimized. Procedures to derive pseudo-functions either using numerical correlations or coarse grid simulations have been proposed and successfully tested.

Aziz, K.; Hewett, T.A.

1996-12-31T23:59:59.000Z

167

Effect of a horizontal magnetic field on convective instabilities in mercury  

E-Print Network [OSTI]

L-455 Effect of a horizontal magnetic field on convective instabilities in mercury S. Fauve, C on the three-dimensional instabilities which occur in a Rayleigh-Bénard experiment with mercury is studied which occur in a Rayleigh-Benard experi- ment in mercury, a low Prandtl number fluid. (The Prandtl

Boyer, Edmond

168

Productivity and injectivity of horizontal wells. Quarterly report, July 1, 1993--September 30, 1993  

SciTech Connect (OSTI)

A number of research activities have been carried out in the last three months. A list outlining these efforts is presented below followed by brief description of each activity in the subsequent sections of this report: (1) The available analytical solutions in the literature for steady state critical rates of horizontal wells are examined. Application of these methods to a cresting example show significant uncertainties in prediction of critical rates. (2) Sensitivity computations have been run for evaluating the effects of shale distribution on the performance of horizontal wells in heterogeneous reservoirs. (3) A number of single phase (water and oil) and two-phase (water and air) experiments have been completed in the Marathon Wellbore Model and the collected data are being analyzed. (4) A presentation of our project was given in the International Technology Forum DEA-44/67 on Horizontal, Slimhole, and Coiled Tubing, held by Maurer. (5) Our draft review report entitled ``Opportunities for Horizontal Wells and Problems in Predicting Their Performance`` has been completed.

Fayers, F.J.; Aziz, K.; Hewett, T.A.

1993-12-01T23:59:59.000Z

169

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

DOE Patents [OSTI]

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

Siminovitch, M.

1998-02-10T23:59:59.000Z

170

Evolution of Red Algal Plastid Genomes: Ancient Architectures, Introns, Horizontal Gene Transfer, and  

E-Print Network [OSTI]

Evolution of Red Algal Plastid Genomes: Ancient Architectures, Introns, Horizontal Gene Transfer, Station Biologique, Roscoff, France Abstract Red algae have the most gene-rich plastid genomes known across all available red algal plastid genomes we show they all share a highly compact and slowly

Martone, Patrick T.

171

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

E-Print Network [OSTI]

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

Al-Majed, Abdulaziz Abdullah

172

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

E-Print Network [OSTI]

62 TC02-007 Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal-tube and 1000m micro-tube. In the single-phase heat transfer experiments, the fully-developed flow heat transfer were also measured using thermocouples (TC). The results showed that the heat transfer coefficient

Ghajar, Afshin J.

173

Horizontal low-void retorting of eastern and western oil shale  

SciTech Connect (OSTI)

Horizontal in situ retorting processes have been developed to recover oil from thin, shallow oil shale deposits. To date the most successful field tests have been conducted in Green River oil shale located in Utah. Consideration is being given to applying this technology to the New Albany oil shales in Indiana. Western Research Institute (WRI) conducted two horizontal in situ oil shale experiments using eastern oil shale and the results are compared with results obtained from a similar experiment using Green River oil shale. The objectives of the three experiments were to simulate the horizontal retorting process and determine oil yield, retorting zone profiles and product characteristics using alternative operating conditions for eastern and western oil shales. The tests proved that horizontal retorting could be simulated in the laboratory. However, air bypass problems occurred in the experiments, which probably reduced oil recovery compared with recovery from field tests. During the eastern oil shale tests plugging was encountered in the gas recovery system because of the production of a solid material containing sulfur compounds. This plugging could be a potential problem for future laboratory and field experimentation. The oil produced from eastern oil shale has different properties from western shale oil. The oil is highly aromatic and when hydrogenated may yield a prototype high density jet fuel. 10 refs., 8 figs., 11 tabs.

Fahy, L.J.

1986-02-01T23:59:59.000Z

174

The Impact of Horizontal Model Grid Resolution on the Boundary Layer Structure over an Idealized Valley  

Science Journals Connector (OSTI)

The role of horizontal model grid resolution on the development of the daytime boundary layer over mountainous terrain is studied. A simple idealized valley topography with a cross-valley width of 20 km, a valley depth of 1.5 km, and a constant ...

Johannes S. Wagner; Alexander Gohm; Mathias W. Rotach

2014-09-01T23:59:59.000Z

175

Low-drag electrical contact arrangement for maintaining continuity between horizontally movable members  

DOE Patents [OSTI]

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.

Brown, R. Jack (Clinton, TN); Gerth, Howard L. (Knoxville, TN); Robinson, Samuel C. (Clinton, TN)

1982-01-01T23:59:59.000Z

176

Low-drag electrical-contact arrangement for maintaining continuity between horizontally movable members  

DOE Patents [OSTI]

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.

Brown, R.J.; Gerth, H.L.; Robinson, S.C.

1981-01-23T23:59:59.000Z

177

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

E-Print Network [OSTI]

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...

Quaium, Ridwan B.

2010-07-14T23:59:59.000Z

178

Hydraulic Fracturing and Horizontal Gas Well Drilling Reference List Updated December 7, 2011  

E-Print Network [OSTI]

Hydraulic Fracturing and Horizontal Gas Well Drilling Reference List Updated December 7, 2011 of Hydraulic Fracturing in the Shale Plays (2010). Tudor Pickering Holt & Co with Reservoir Research Partners, with a thoughtful discussion Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources

Manning, Sturt

179

Hydraulic Fracturing and Horizontal Gas Well Drilling Reference List Updated June 23, 2011  

E-Print Network [OSTI]

Hydraulic Fracturing and Horizontal Gas Well Drilling Reference List Updated June 23, 2011 of Hydraulic Fracturing in the Shale Plays (2010). Tudor Pickering Holt & Co with Reservoir Research Partners, with a thoughtful discussion Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water

180

From Green to Red: Horizontal Gene Transfer of the Phycoerythrin Gene Cluster between Planktothrix Strains  

Science Journals Connector (OSTI)

...Evolutionary and Genomic Microbiology From Green to Red: Horizontal Gene Transfer of the...phycoerythrin, which are responsible for green and red appearance, respectively. Sequence...that is otherwise more closely related to green strains. Our data show that the insertion...

Ave Tooming-Klunderud; Hanne Sogge; Trine Ballestad Rounge; Alexander J. Nederbragt; Karin Lagesen; Gernot Glöckner; Paul K. Hayes; Thomas Rohrlack; Kjetill S. Jakobsen

2013-08-30T23:59:59.000Z

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


181

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallelplate electrolysis  

E-Print Network [OSTI]

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallel­plate electrolysis Yilong Han Department of Physics and Astronomy, University of Pennsylvania 209, they appear to result from an underlying electroconvective instability during electrolysis in the parallel

Grier, David

182

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallelplate electrolysis  

E-Print Network [OSTI]

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallel­plate electrolysis Yilong Han Department of Physics and Astronomy, University of Pennsylvania 209 electrolysis in the parallel plate geometry. This contrasts with recent theoretical results suggesting

Grier, David

183

A parametric study on the benefits of drilling horizontal and multilateral wells in coalbed methane reservoirs  

SciTech Connect (OSTI)

Recent years have witnessed a renewed interest in development of coalbed methane (CBM) reservoirs. Optimizing CBM production is of interest to many operators. Drilling horizontal and multilateral wells is gaining Popularity in many different coalbed reservoirs, with varying results. This study concentrates on variations of horizontal and multilateral-well configurations and their potential benefits. In this study, horizontal and several multilateral drilling patterns for CBM reservoirs are studied. The reservoir parameters that have been studied include gas content, permeability, and desorption characteristics. Net present value (NPV) has been used as the yard stick for comparing different drilling configurations. Configurations that have been investigated are single-, dual-, tri-, and quad-lateral wells along with fishbone (also known as pinnate) wells. In these configurations, the total length of horizontal wells and the spacing between laterals (SBL) have been studied. It was determined that in the cases that have been studied in this paper (all other circumstances being equal), quadlateral wells are the optimum well configuration.

Maricic, N.; Mohaghegh, S.D.; Artun, E. [Chevron Energy Technology Co., Houston, TX (USA)

2008-12-15T23:59:59.000Z

184

Productivity and injectivity of horizontal wells. Annual report, March 10, 1996--March 9, 1997  

SciTech Connect (OSTI)

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.

Aziz, K.; Hewett, T.A.; Arbabi, S.; Smith, M.

1997-06-01T23:59:59.000Z

185

Horizontal Directional Drilling: A Green and Sustainable Technology for Site Remediation  

Science Journals Connector (OSTI)

Horizontal Directional Drilling: A Green and Sustainable Technology for Site Remediation ... Although a host of innovative technologies exist to treat contaminated soil and groundwater, constructing them in the field continues to rely on age-old, conventional methods: vertical drilling or excavation. ...

Michael D. Lubrecht; LG

2012-01-24T23:59:59.000Z

186

Horizontal transmission of the insect symbiont Rickettsia is plant-mediated  

Science Journals Connector (OSTI)

...transmitted through this route. Although in their...that study, horizontal transmission of Rickettsia was not...ground may serve as a route by which Rickettsia...frequency of interspecific transmission will require an understanding...of 14 L : 10 D. The lines used in the experiments...

2012-01-01T23:59:59.000Z

187

THE DEVIL’S STAIRCASE DIMENSIONS AND MEASURE-THEORETICAL ENTROPY OF MAPS WITH HORIZONTAL GAP  

E-Print Network [OSTI]

Abstract. This work elucidates the measure-theoretical entropy and dimensions of a unimodal map with a horizontal gap. The measure-theoretical entropy and dimensions of the Ft (which is defined later)are shown to form a devil’s staircase structure with respect to the gap size t. Pesin’s formula for gap maps is also considered. 1.

Jung-chao Ban; Song-sun Lin

188

Extremal Channels for a genaral Quantum system  

E-Print Network [OSTI]

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

Kuldeep Dixit; E. C. G. Sudarshan

2009-09-21T23:59:59.000Z

189

Minimax discrimination of two Pauli channels  

SciTech Connect (OSTI)

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

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

2005-11-15T23:59:59.000Z

190

Ion channels and apoptosis in cancer  

Science Journals Connector (OSTI)

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

2014-01-01T23:59:59.000Z

191

Coding theorems for hybrid channels. II  

E-Print Network [OSTI]

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

A. A. Kuznetsova; A. S. Holevo

2014-08-14T23:59:59.000Z

192

FREEPORT HARBOR, TEXAS CHANNEL IMPROVEMENT PROJECT  

E-Print Network [OSTI]

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

US Army Corps of Engineers

193

Single channel recordings of K+ currents in squid axons  

Science Journals Connector (OSTI)

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

Franco Conti; Erwin Neher

1980-05-15T23:59:59.000Z

194

Solar: monthly and annual average global horizontal irradiance GIS data at  

Open Energy Info (EERE)

irradiance GIS data at irradiance GIS data at one-degree resolution of the World from NASA/SSE Dataset Summary Description (Abstract): Global Horizontal IrradianceNASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Jan 2008)22-year Monthly & Annual Average (July 1983 - June 2005) Parameter: Insolation Incident On A Horizontal Surface (kWh/m^2/day) Internet: http://eosweb.larc.nasa.gov/sse/ Note 1: SSE Methodology & Accuracy sections online Note 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; positive values are north and east. Boundaries of the -90/-180 region are -90 to -89 (south) and -180 to -179 (west). The last region, 89/180, is bounded by 89 to 90 (north) and 179 to 180 (east). The mid-point of

195

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Nepal from NREL Nepal from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Nepal. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

196

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Ghana from NREL Ghana from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate collectors for Ghana. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

197

ANL/APS/TB-32 Test of Horizontal Field Measurements Using Two-Axis Hall  

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

2 2 Test of Horizontal Field Measurements Using Two-Axis Hall Probes at the APS Magnetic Measurement Facility I. Vasserman Advanced Photon Source Argonne National Laboratory Argonne, IL 60439 1. Introduction The free-electron laser (FEL) project at the Advanced Photon Source (APS) will use a 400-MeV particle beam from the APS linac with RMS beam transverse size of 100 µm and requires very high performance of the insertion devices in order to achieve high intensity radiation. Averaged over period, the trajectory must deviate from the ideal on-axis trajectory by not more than 10% of the RMS beam size. Meaning that the second field integral should be straight within ±1300 G-cm 2 over the length of the device for both horizontal and vertical directions for the 400-MeV particle

198

Solar: monthly global horizontal (GHI) GIS data at 10km resolution for  

Open Energy Info (EERE)

Central America from SUNY Central America from SUNY Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate solar collectors for Central America (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a horizontal flat-plate solar collector, such as a Photovoltaic (PV) solar panel. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 10 km by 10 km in size. The solar resource value is represented as kilowatt-hours per square meter per day for each month. The data were developed from the State University of New York's (SUNY) GOES satellite solar model.

199

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Brazil from NREL Brazil from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Brazil. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

200

Integrated Approach Towards the Application of Horizontal Wells to Improve Waterflooding Performance  

SciTech Connect (OSTI)

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.

Kelkar, Mohan; Liner, Chris; Kerr, Dennis

1999-10-15T23:59:59.000Z

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


201

Fracturing pressures and near-well fracture geometry of arbitrarily oriented and horizontal wells  

SciTech Connect (OSTI)

The hydraulic fracturing of arbitrarily oriented and horizontal wells is made challenging by the far more complicated near-well fracture geometry compared to that of conventional vertical wells. This geometry is important both for hydraulic fracture propagation and the subsequent post-treatment well performance. Fracture tortuosity of arbitrarily oriented and horizontal wells is likely to cause large initiation pressures and reduction in the fracture widths. This paper presents a comprehensive study of the effects of important variables, including the principal stresses, wellbore orientation, and perforation configuration on fracture geometry. Initiation pressures, the contact between arbitrarily oriented wells and the fracture plane, and the near-well fracture geometry are determined and discussed. This study also shows that because of the near-well stress concentration the fracture width at the wellbore is always smaller than the maximum fracture width. This can have important consequences during hydraulic fracturing.

Chen, Z.; Economides, M.J.

1995-12-31T23:59:59.000Z

202

Shallow oil production using horizontal wells with enhanced oil recovery techniques  

SciTech Connect (OSTI)

Millions of barrels of oil exist in the Bartlesville formation throughout Oklahoma, Kansas, and Missouri. In an attempt to demonstrate that these shallow heavy oil deposits can be recovered, a field project was undertaken to determine the effectiveness of enhanced oil recovery techniques (EOR) employing horizontal wells. Process screening results suggested that thermal EOR processes were best suited for the recovery of this heavy oil. Screening criteria suggested that in situ combustion was a viable technique for the production of these reserves. Laboratory combustion tube tests confirmed that sufficient amounts of fuel could be deposited. The results of the in situ combustion field pilot were disappointing. A total overall recovery efficiency of only 16.0 percent was achieved. Results suggest that the combustion front might have moved past the horizontal well, however elevated temperatures or crude upgrading were not observed. Factors contributing to the lack of production are also discussed.

Satchwell, R.M.; Johnson, L.A. Jr. [Western Research Institute, Laramie, WY (United States); Trent, R. [Univ. of Alaska, Fairbanks, AK (United States)

1995-02-01T23:59:59.000Z

203

Striking Photospheric Abundance Anomalies in Blue Horizontal-Branch Stars in Globular Cluster M13  

E-Print Network [OSTI]

High-resolution optical spectra of thirteen blue horizontal-branch (BHB) stars in the globular cluster M13 show enormous deviations in element abundances from the expected cluster metallicity. In the hotter stars (T_eff > 12000 K), helium is depleted by factors of 10 to 100 below solar, while iron is enhanced to three times the solar abundance, two orders of magnitude above the canonical metallicity [Fe/H] ~= -1.5 dex for this globular cluster. Nitrogen, phosphorus, and chromium exhibit even more pronounced enhancements, and other metals are also mildly overabundant, with the exception of magnesium, which stays very near the expected cluster metallicity. These photospheric anomalies are most likely due to diffusion --- gravitational settling of helium, and radiative levitation of the other elements --- in the stable radiative atmospheres of these hot stars. The effects of these mechanisms may have some impact on the photometric morphology of the cluster's horizontal branch and on estimates of its age and distance.

Bradford B. Behr; Judith G. Cohen; James K. McCarthy; S. George Djorgovski

1999-03-29T23:59:59.000Z

204

Evaluation of target reservoirs for horizontal drilling: Lower Glen Rose Formation, South Texas  

SciTech Connect (OSTI)

The primary objective of this project is to test the hypothesis that a horizontally drilled borehole can increase gas production sufficiently from the Lower Glen Rose Formation to provide an economic advantage over conventional vertical drilling. Additional objectives are to conduct detailed investigations of reservoir properties and completion methods. This paper presents preliminary results of a project, co-funded by PrimeEnergy and the United States Department of Energy (DOE), to assess the economic viability of horizontal drilling in the Lower Glen Rose Formation of Maverick County, Texas. This project is part of an ongoing DOE investigation of directional drilling in the development of tight gas resources within the United States. This paper builds on data presented in Muncey (1992) with data from two vertical tests of the Lower Glen Rose Formation, both drilled in 1993, and the analysis of approximately 20 line-miles of high-resolution seismic data recorded in 1992 and 1993.

Muncey, G.; Drimal, C.E. Jr.

1993-12-31T23:59:59.000Z

205

Heat transfer to a horizontal cylinder in a shallow bubble column  

Science Journals Connector (OSTI)

Abstract Heat transfer coefficient correlations for tall bubble columns are unable to predict heat transfer in shallow bubble columns, which have unique geometry and fluid dynamics. In this work, the heat transfer coefficient is measured on the surface of a horizontal cylinder immersed in a shallow air–water bubble column. Superficial velocity, liquid depth, and cylinder height and horizontal position with respect to the sparger orifices are varied. The heat transfer coefficient is found to increase with height until reaching a critical height, and a dimensionless, semi-theoretical correlation is developed that incorporates superficial velocity, liquid properties, and height. Additionally, the more minor effects of flow regime, column region, and bubble impact are discussed. Notably, the heat transfer coefficient can be as high in the region of bubble coalescence as in the bulk of the column, but only if bubbles impact the cylinder. The correlation and discussion provide a framework for modeling and designing shallow, coil-cooled bubble columns.

Emily W. Tow; John H. Lienhard V

2014-01-01T23:59:59.000Z

206

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Kenya from NREL Kenya from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Kenya. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

207

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Sri Lanka from NREL Sri Lanka from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate collectors, for Sri Lanka (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

208

Solar: monthly global horizontal (GHI) GIS data at 40km resolution for  

Open Energy Info (EERE)

40km resolution for 40km resolution for Bangladesh from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Bangladesh. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water

209

Using borehole images for target-zone evaluation in horizontal wells  

SciTech Connect (OSTI)

Horizontal wells are rarely horizontal. Instead, operators commonly try to drill such wells into particular rock layers, or target zones, which may or may not be truly horizontal. Thicknesses of target zones commonly range from a few feet to a few tens of feet (1-10 m). Target-zone evaluation concerns whether a horizontal well was successfully located and drilled in a given rock layer. Borehole-imaging logs provide a powerful tool for stratigraphic interpretation and target-zone evaluation in the Austin Chalk, Niobrara Formation, San Andres Formation, and other units. This study uses borehole images generated by Schlumberger's Formation MicroScanner (FMS), a microconductivity logging device. Open fractures and clay-rich interbeds appear as dark, high-conductivity tracers on the FMS log. These traces can be fit with sinusoidal curves and oriented on a computer workstation. The shape of the sinusoidal curve that fits a particular bedding plane tells the interpreter whether the borehole was moving upward or downward through the strata. STRATLOG (trademark of Sierra Geophysics, Inc., a Halliburton Company) software has been used to display borehole profiles by combining FMS data on fracture intensities and bedding-plane intersections with gamma-ray logs, mud logs, and borehole-deviation surveys. To aid in planning future wells, multiple penetrations of the same horizon can be detected and used to calculate highly accurate bedding-plane dips. Fault interpretation, including the detection of rollover beds, it also possible. Finally, stratigraphic interpretation can be combined with observed fractures to determine which rock layers are most highly fractured, and, therefore, should be target zones.9 refs., 5 figs.

Hurley, N.F.; Carlson, J.L. (Marathon Oil Company, Littleton, CO (United States)); Thorn, D.R. (Schlumberger Well Services, Aurora (Colombia)); Eichelberger, L.W. (Marathon Oil Company, Tyler, TX (United States))

1994-02-01T23:59:59.000Z

210

Test instructions for the horizontal borehole demonstration at the Near-Surface Test Facility  

SciTech Connect (OSTI)

This test outlines the planned activities designed to demonstrate the horizontal borehole drilling and testing operations at the Near Surface Test Facility prior to the performance of these methods within the Exploratory Shaft underground facility. This document will also lead to establishing the operating and safety procedures which will be implemented in the Exploratory Shaft long exploratory borehole drilling and testing program. 7 refs., 3 figs., 1 tab.

McLellan, G.W. (Rockwell International Corp., Richland, WA (USA). Energy Systems Group)

1984-03-01T23:59:59.000Z

211

Productivity and injectivity of horizontal wells. Annual report, March 10, 1993--March 9, 1994  

SciTech Connect (OSTI)

In this report, the investigators review a range of reservoir scenarios in which horizontal wells can be advantageous and discuss some of the modeling problems associated with calculating well connection factors, productivity indices, coning behavior and well two-phase pressure drops. We show illustrative coning calculations and the implications of the well model on distribution of post-breakthrough gas saturations. Such calculations then open up the possibility of determining optimal recompletion strategies and/or additional hydraulic fracturing.

Fayers, F.J.; Aziz, K.; Hewett, T.A.; Arbabi, S.

1994-10-01T23:59:59.000Z

212

Termination for a superconducting power transmission line including a horizontal cryogenic bushing  

DOE Patents [OSTI]

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.

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

213

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]

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

Domingues, Margarete Oliveira

214

Data-dependent Write Channel Model for Magnetic Recording  

E-Print Network [OSTI]

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

Wang, Deli

215

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

China from NREL China from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for China. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate influences. Furthermore, the uncertainty of the modeled estimates increase with distance from reliable measurement sources and with the complexity of the terrain.

216

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Mexico, Central America, and the Caribbean Islands from NREL Mexico, Central America, and the Caribbean Islands from NREL Dataset Summary Description (Abstract): Monthly Average Solar Resource for horizontal flat-plate collectors, for Mexico, Central America, and the Caribbean Islands. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the model. The local cloud cover can vary significantly even within a single grid cell as a result of terrain effects and other microclimate

217

Solar: monthly and annual average global horizontal (GHI) GIS data at 40km  

Open Energy Info (EERE)

Ethiopia from NREL Ethiopia from NREL Dataset Summary Description (Abstract): Monthly average solar resource for horizontal flat-plate collectors for Ethiopia. (Purpose): Provide information on the solar resource potential for the data domain. The insolation values represent the average solar energy available to a flat plate collector, such as a photovoltaic panel, oriented horizontally. (Supplemental Information): These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. The solar resource value is represented as watt-hours per square meter per day for each month. The data were developed from NREL's Climatological Solar Radiation (CSR) Model. This model uses information on cloud cover, atmospheric water vapor and trace gases, and the amount of aerosols in the atmosphere to calculate the monthly average daily total insolation (sun and sky) falling on a horizontal surface. Existing ground measurement stations are used to validate the data where possible. The modeled values are accurate to approximately 10% of a true measured value within the grid cell due to the uncertainties associated with meteorological input to the

218

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

Science Journals Connector (OSTI)

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

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

2001-01-01T23:59:59.000Z

219

A numerical investigation of natural convection heat transfer within horizontal spent-fuel assemblies  

SciTech Connect (OSTI)

A numerical investigation of natural convection heat transfer is carried out for a single, horizontal, spent-fuel assembly in an environment typical of spent-fuel transportation systems as well as some dry storage/disposal scenarios. The objective is to predict computationally the convective heat transfer trends for horizontal spent fuel and to compare the results to data taken in a supporting experimental effort. The predicted data consist of thermal and flow fields throughout the assembly for a wide range of Rayleigh number, as well as numerically obtained Nusselt-number data that are correlated as a function of Rayleigh number. Both laminar and turbulent approaches are examined for a Boussinesq fluid with Pr = 0.7. The data predict the existence of a conduction-dominated regime, a transition regime, and a convection regime. Compared with the laminar approach, a significant improvement in the predicted Nusselt number is obtained for large Rayleigh numbers when a turbulence model is employed. This lends additional support to the experimental evidence that a transition to turbulent flow occurs for Rayleigh numbers greater than 10{sup 7}. Overall, the numerically predicted heat transfer trends compare well with previously obtained experimental data, and the computed assembly Nusselt numbers generally reside within the range of experimental uncertainty. The predicted thermal and flow fields further provide a numerical flow visualization capability that enhances the understanding of natural convection in horizontal spent fuel and allows improved physical interpretation of the experimental data.

Canaan, R.E. [Lawrence Livermore National Lab., CA (United States); Klein, D.E. [Univ. of Texas System, Austin, TX (United States)

1998-08-01T23:59:59.000Z

220

Drilling fluid technology for horizontal wells to protect the formations in unconsolidated sandstone heavy oil reservoirs  

Science Journals Connector (OSTI)

Major factors that cause damage in drilling in unconsolidated sandstone heavy oil reservoirs include: invasion of solids in drilling fluid, incompatibility between the liquid phase of drilling fluid and crude oil, and hydration and expansion of reservoir clay minerals. Therefore, a solid-free weak gel drilling fluid system for horizontal wells to protect the formations was developed that contains seawater + 0.1%–0.2% NaOH + 0.2% Na2CO3+ 0.7% VIS + 2.0% FLO + 2.0% JLX, weighed with \\{KCl\\} or sodium formate. The drilling fluid system has unique rheological properties, temporally independent gel strength, and excellent lubricating and inhibition performance. It is compatible with formation fluids, it not only meets the needs of horizontal well drilling, but also effectively protects the reservoir. The technique is well performed in tens of horizontal wells in offshore oilfields, such as WC13-1, BZ34-1, NP35-2, and BZ25-1 oilfields.

Yue Qiansheng; Liu Shujie; Xiang Xingjin

2010-01-01T23:59:59.000Z

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


221

Method for explosive expansion toward horizontal free faces for forming an in situ oil shale retort  

DOE Patents [OSTI]

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.

Ricketts, Thomas E. (Bakersfield, CA)

1980-01-01T23:59:59.000Z

222

Well completion report on installation of horizontal wells for in-situ remediation tests  

SciTech Connect (OSTI)

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.

Kaback, D.S.; Looney, B.B.; Corey, J.C.; Wright, L.M.

1989-08-01T23:59:59.000Z

223

Integrated approach towards the application of horizontal wells to improve waterflooding performance. Annual report  

SciTech Connect (OSTI)

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.

Kelkar, M.; Liner, C.; Kerr, D.

1995-05-01T23:59:59.000Z

224

Prediction of lateral variability in fracture intensity using multicomponent shear-wave surface seismic as a precursor to horizontal drilling in the Austin Chalk  

Science Journals Connector (OSTI)

......represents the horizontal borehole. The open square boxes on the horizontal borehole are mudlogger determined...lines intersecting the borehole represent fractures...measurable, even if y is large. However, the differencein...support of a horizontal drilling program. This method......

Michael C. Mueller

1991-12-01T23:59:59.000Z

225

Production economics and profitability analysis of horizontal rack culture and horizontal rack culture coupled with raft-string culture methods: a case study of Pacific oyster (Crassostrea gigas) farming in Chiayi and Yunlin Counties, Taiwan  

Science Journals Connector (OSTI)

Because of the influence of an intertidal farming environment, the oyster breeding industry of Chiayi and Yunlin has adopted the use of a horizontal rack culture in the intertidal zone, as well ... cost function ...

Jung-Fu Huang; Jie-Min Lee

2014-06-01T23:59:59.000Z

226

Non-linear wavelength selection for pattern-forming systems in channels  

Science Journals Connector (OSTI)

......heat exchangers and solar collectors (Abid et al., 2006...the time, x and y are horizontal spatial variables...either stress-free horizontal walls (Daniels & Chana, 1987) or no-slip horizontal walls (Daniels & Ong......

P. G. Daniels; D. Ho; A. C. Skeldon

2008-12-01T23:59:59.000Z

227

Applying Alpha-Channeling to Mirror Machines  

SciTech Connect (OSTI)

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

A.I. Zhmoginov and N.J. Fisch

2012-03-16T23:59:59.000Z

228

Ion Channel Engineering: Perspectives and Strategies  

Science Journals Connector (OSTI)

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

Prakash Subramanyam; Henry M. Colecraft

2014-01-01T23:59:59.000Z

229

MHL Free Surface Channel | Open Energy Information  

Open Energy Info (EERE)

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

230

Environmental and Performance Analysis of a 5kW Horizontal Axis Wind Turbine in East Central Alberta.  

E-Print Network [OSTI]

??This thesis investigates the environmental and performance results of a 5kW horizontal axis wind turbine installed in east-central Alberta. Life cycle assessment (LCA) methodology was… (more)

Rooke, Braden

2012-01-01T23:59:59.000Z

231

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

E-Print Network [OSTI]

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 ...

Lucas, Jorge

2011-11-22T23:59:59.000Z

232

Impacts of Soil and Pipe Thermal Conductivity on Performance of Horizontal Pipe in a Ground-source Heat Pump  

E-Print Network [OSTI]

In this paper the composition and thermal property of soil are discussed. The main factors that impact the soil thermal conductivity and several commonly-used pipe materials are studied. A model of heat exchanger with horizontal pipes of ground...

Song, Y.; Yao, Y.; Na, W.

2006-01-01T23:59:59.000Z

233

Heat transfer in a horizontal fluid layer heated from below upon rotation of one of the boundaries  

Science Journals Connector (OSTI)

The mixed convection in a horizontal fluid layer which is generated by uniform heating from below and by rotation of one ... studied experimentally. The region occupied by the fluid is a cylinder of radius320 mm ...

V. S. Berdnikov; V. A. Markov

234

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

Broader source: Energy.gov [DOE]

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

235

Tangent length and sight distance effects on accident rates at horizontal curves on two-lane rural highways  

E-Print Network [OSTI]

model. Regression analysis on this database suggested that neither tangent length nor preceding sight distance are significant variables in explaining the variability in accidents on horizontal curves for a given degree of curvature category. Results...

Fink, Kenneth Lee

2012-06-07T23:59:59.000Z

236

Investigating the Horizontal Distribution of Hydrographic Properties of the Texas-Louisiana Shelf Using an Undulating Towed Vehicle  

E-Print Network [OSTI]

to investigate the horizontal and vertical spatial variability and examine the relationship of physical and biological factors with the distribution of dissolved oxygen concentration. Equipped with a CTD and multiple sensors, the instrument package produced high...

Calbat, Kyle

2013-02-04T23:59:59.000Z

237

Fast Convergence Algorithm for Earthquake Prediction Using SLF/ELF Horizontal Electric Dipole during Day and Night and Schumann Resonance  

Science Journals Connector (OSTI)

Electromagnetic wave radiation from a SLF/ELF horizontal electric dipole (HED) related ... electromagnetic waves associated with the seismic activity, SLF/ELF waves on the ground radiated from ... algorithm. A th...

Yuan-xin Wang; Rong-hong Jin; Jun-ping Geng

2012-11-01T23:59:59.000Z

238

Integrated analysis of production potential and profitability of a horizontal well in the Lower Glen Rose Formation, Maverick County, Texas  

SciTech Connect (OSTI)

The U.S. Department of Energy/Morgantown Energy Technology Center (DOE/METC) awarded a contract in 1991 to Prime Energy Corporation (PEC) to demonstrate the benefit of using horizontal wells to recover gas from low permeability formations. The project area was located in the Chittim field of Maverick County, Texas. The Lower Glen Rose Formation in the Chittim field was a promising horizontal well candidate based on the heterogenous nature of the reservoir (suggested by large well-to-well variances in reserves) and the low percentage of economical vertical wells. Since there was substantial evidence of reservoir heterogeneity, it was unknown whether the selected, wellsite would penetrate a reservoir with the desired properties for a horizontal well. Thus, an integrated team was formed to combine geologic analysis, seismic interpretation, reservoir engineering, reservoir simulation, and economic assessment to analyze the production potential and profitability of completing a horizontal well in the Lower Glen Rose formation.

Ammer, J.R.; Mroz, T.H.; Zammerilli, A.M.; Yost, A.B. II [Dept. of Energy, Morgantown, WV (United States); Muncey, J.G.; Hegeman, P.S.

1995-03-01T23:59:59.000Z

239

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

SciTech Connect (OSTI)

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

NONE

1998-12-01T23:59:59.000Z

240

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

Science Journals Connector (OSTI)

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

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

2009-01-01T23:59:59.000Z

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


241

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

Science Journals Connector (OSTI)

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

1]Qinghua Zhao; Pamela Cosman…

2002-01-01T23:59:59.000Z

242

Effects of aerosol and horizontal inhomogeneity on the broadband albedo of marine stratus: Numerical simulations  

SciTech Connect (OSTI)

Recent estimates of the effect of increasing of anthropogenic sulfate aerosol on the radiative forcing of the atmosphere have indicated that its impact may be comparable in magnitude to the effect from increases in CO{sub 2}. Much of this impact is expected from the effects of the aerosol on cloud microphysics and the subsequent impact on cloud albedo. A solar broadband version of a 2D radiative transfer model was used to quantify the impact of enhanced aerosol concentrations and horizontal inhomogeneity on the solar broadband albedo of marine stratus. The results of the radiative transfer calculations indicated that in unbroken marine stratus clouds the net horizontal transport of photons over a domain of a few kilometers was nearly zero, and the domain-average broadband albedo computed in a 2D cross section was nearly identical to the domain average calculated from a series of independent pixel approximation (IPA) calculations of the same cross section. However, the horizontal inhomogeneity does affect the cloud albedo compared to plane-parallel approximation (PPA) computations due to the nonlinear relationship between albedo and optical depth. The reduction in cloud albedo could be related to the variability of the distribution of log (cloud optical depth). These results extend the finding of Cahalan et al. to broadband solar albedos in a more realistic cloud model and suggest that accurate computation of domain-averaged broadband albedos in unbroken (or nearly unbroken) marine stratus can be made using IPA calculations with 1D radiative transfer models. Computations of the mean albedo over portions of the 3D RAMS domain show the relative increase in cloud albedo due to a 67% increase in the boundary-layer average CCN concentration was between 6% and 9%. The effects of cloud inhomogeneity on the broadband albedo as measured from the PPA bias ranged from 3% to 5%. 25 refs., 8 figs., 4 tabs.

Duda, D.P.; Stephens, G.L.; Stevens, B.; Cotton, W.R. [Colorado State Univ., Fort Collins, CO (United States)] [Colorado State Univ., Fort Collins, CO (United States)

1996-12-15T23:59:59.000Z

243

Programmable quantum channels and measurements  

E-Print Network [OSTI]

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

Giacomo Mauro D'Ariano; Paolo Perinotti

2005-10-05T23:59:59.000Z

244

Finite element analysis of laminar mixed convection in the entrance region of horizontal annular ducts  

SciTech Connect (OSTI)

The laminar mixed convection in the entrance region of horizontal straight ducts of an annular cross section is studied by means of a generally applicable finite element procedure based on the parabolized simplification of the Navier-Stokes and energy equations and on the Boussinesq approximation of the buoyancy term. The procedure is validated through comparisons of computed results with available data from the literature. New results concern annuli with radius ratios equal to 0.25, 0.5, and 0.75 subjected to the fundamental boundary condition of the second and the third kinds, for Prandtl numbers equal to 0.7 and 7, and different values of Grashof number.

Nonino, C.; Giudice, S. del [Univ. di Udine (Italy). Dipt. di Energetica e Macchine

1996-02-23T23:59:59.000Z

245

Unsteady mixed convection in horizontal ducts with applications to chemical vapor deposition processes  

SciTech Connect (OSTI)

Mixed convection in a horizontal rectangular duct of aspect ratio 4 heated from below with cold side walls was studied numerically for a non-Boussinesq fluid. Results are presented for a reduced temperature of 2.33 and a Rayleigh number of 130,700. The resulting flow field at Re = 25 consisted of four steady longitudinal vortices, symmetric about the duct centerline, with a leading transverse roll cell. A reduction to Re = 10 resulted in the introduction of traveling transverse waves. A further reduction Re = 5 resulted in a loss of symmetry about the duct centerline plane. Further work is underway to verify the Re = 5 results.

Spall, R.E. [Univ. of South Alabama, Mobile, AL (United States). Dept. of Mechanical Engineering] [Univ. of South Alabama, Mobile, AL (United States). Dept. of Mechanical Engineering

1996-01-01T23:59:59.000Z

246

Dynamics of a Bose-Einstein condensate in a horizontally vibrating shallow optical lattice  

SciTech Connect (OSTI)

We consider a solitonic solution of the self-attractive Bose-Einstein condensate in a one-dimensional external potential of a shallow optical lattice with large periodicity when the lattice is horizontally shaken. We investigate the dynamics of the bright soliton through the properties of the fixed points. The special type of bifurcation results in a simple criterion for the stability of the fixed points depending only on the amplitude of the shaking lattice. Because of the similarity of the equations with those of an ac-driven Josephson junction, some results may find applications in other branches of physics.

Valizadeh, A.; Jahanbani, Kh.; Kolahchi, M. R. [Institute for Advanced Studies in Basic Sciences, P.O. Box 45195-1159, Zanjan (Iran, Islamic Republic of)

2010-02-15T23:59:59.000Z

247

Security camera resolution measurements: Horizontal TV lines versus modulation transfer function measurements.  

SciTech Connect (OSTI)

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.

Birch, Gabriel Carisle; Griffin, John Clark

2015-01-01T23:59:59.000Z

248

Bunch Coalescing in a Helical Channel  

SciTech Connect (OSTI)

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

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

2012-05-01T23:59:59.000Z

249

Ca2+ Channels and Ryanodine Receptors in  

E-Print Network [OSTI]

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

Yue, David

250

Energy Harvesting Diamond Channel with Energy Cooperation  

E-Print Network [OSTI]

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

Ulukus, Sennur

251

Channel Coding Diversity with Mismatched Decoding Metrics  

E-Print Network [OSTI]

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

Lampe, Lutz

252

Sabine-Neches Waterway Channel Improvement Project  

E-Print Network [OSTI]

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

US Army Corps of Engineers

253

FREEPORT HARBOR, TEXAS CHANNEL IMPROVEMENT PROJECT  

E-Print Network [OSTI]

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

US Army Corps of Engineers

254

Elementary Processes Underlying Alpha Channeling in Tokamaks  

SciTech Connect (OSTI)

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

NM.J. Fisch

2012-06-15T23:59:59.000Z

255

Carderock Circulating Water Channel | Open Energy Information  

Open Energy Info (EERE)

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

256

Robust control design for the plasma horizontal position control on J-TEXT Tokamak  

Science Journals Connector (OSTI)

Abstract It is extremely important for tokamak to control the plasma position during routine discharge. However, the model of plasma in tokamak usually contains much of the uncertainty, such as structured uncertainties and unmodeled dynamics. Compared with the traditional PID control approach, robust control theory is more suitable to handle this problem. In the paper, we propose a H? robust control scheme to control the horizontal position of plasma during the flat-top phase of discharge on Joint Texas Experimental Tokamak (J-TEXT) tokamak. First, the model of our plant for plasma horizontal position control is obtained from the position equilibrium equations. Then the H? robust control framework is used to synthesize the controller. Based on this, an H? controller is designed to minimize the regulation/tracking error. Finally, a comparison study is conducted between the optimized H? robust controller and the traditional PID controller in simulations. The simulation results of the H? robust controller show a significant improvement of the performance with respect to those obtained with traditional PID controller, which is currently used on our machine.

W.Z. Yu; Z.P. Chen; G. Zhuang; Z.J. Wang

2013-01-01T23:59:59.000Z

257

Analysis of horizontal and vertical in-situ oil-shale retorting: comparison of field experiments  

SciTech Connect (OSTI)

Currently two different processing techniques are utilized for in situ oil shale retorting. Horizontal In Situ (HIS), in which the retort front moves parallel to the shale bedding planes, is being utilized on relatively thin, near-surface oil shale. Vertical Modified In Situ (VMIS), in which the retort front moves perpendicular to the shale bedding planes, is being utilized for thicker deposits of shale at greater depths. While chemical effects in the two processes should be similar, physical phenomena (such as fluid product flow and heat transfer) can be substantially different due to gravity and anisotropic shale properties associated with the shale bedding planes. To illustrate both similarities between the processes and some striking differences, we present thermal data (detailing movement of the steam and retorting fronts) and offgas and oil analysis data (allowing material and energy balance closures) from two recent field experiments, Sandia/Geokinetics Retort 23 (HIS) and Occidental Retort 8 (VMIS). These data show, for example, a broader combustion front in the horizontal process, resulting in a lower thermal efficiency. However, because of a lower shale grade in the VMIS experiment, local oil yield (50 to 60% of Fischer Assay) was similar in the two experiments, with roughly two-thirds of the loss to oil combustion and one-third to oil coking and cracking reactions.

Tyner, C.E.; Bickel, T.C.; Stevens, A.L.; Lekas, J.M.

1983-01-01T23:59:59.000Z

258

THE CHEMICAL COMPOSITIONS OF NON-VARIABLE RED AND BLUE FIELD HORIZONTAL BRANCH STARS  

SciTech Connect (OSTI)

We present a new detailed abundance study of field red horizontal branch (RHB) and blue horizontal branch (BHB) non-variable stars. High resolution and high signal-to-noise ratio echelle spectra of 11 RHB and 12 BHB were obtained with the McDonald 2.7 m telescope, and the RHB sample was augmented by reanalysis of spectra of 25 stars from a recent survey. We derived stellar atmospheric parameters based on spectroscopic constraints and computed relative abundance ratios for 24 species of 19 elements. The species include Si II and Ca II, which have not been previously studied in RHB and BHB (T{sub eff} < 9000 K) stars. The abundance ratios are generally consistent with those of similar-metallicity field stars in different evolutionary stages. We estimated the masses of the RHB and BHB stars by comparing their T{sub eff}-log g positions with HB model evolutionary tracks. The mass distribution suggests that our program stars possess masses of {approx}0.5 M{sub sun}. Finally, we compared the temperature distributions of field RHB and BHB stars with field RR Lyraes in the metallicity range -0.8{approx}> [Fe/H] {approx}>-2.5. This yielded effective temperature estimates of 5900 K and 7400 K for the red and blue edges of the RR Lyrae instability strip.

For Biqing; Sneden, Christopher, E-mail: biqing@astro.as.utexas.ed [Department of Astronomy, University of Texas, Austin, TX 78712 (United States)

2010-12-15T23:59:59.000Z

259

Flow distribution in a solar collector panel with horizontally inclined absorber strips  

Science Journals Connector (OSTI)

The objective of this work is to theoretically and experimentally investigate the flow and temperature distribution in a solar collector panel with an absorber consisting of horizontally inclined strips. Fluid flow and heat transfer in the collector panel are studied by means of computational fluid dynamics (CFD) calculations. Further, experimental investigations of a 12.5 m2 solar collector panel with 16 parallel connected horizontal fins are carried out. The flow distribution through the absorber is evaluated by means of temperature measurements on the backside of the absorber tubes. The measured temperatures are compared to the temperatures determined by the CFD model and there is a good similarity between the measured and calculated results. Calculations with the CFD model elucidate the flow and temperature distribution in the collector. The influences of different operating conditions such as flow rate, properties of solar collector fluid, solar collector fluid inlet temperature and collector tilt angle are shown. The flow distribution through the absorber fins is uniform if high flow rates are used. By decreased flow rate and decreased content of glycol in the glycol/water mixture used as solar collector fluid, and by increased collector tilt and inlet temperature, the flow distribution gets worse resulting in an increased risk of boiling in the upper part of the collector panel.

Jianhua Fan; Louise Jivan Shah; Simon Furbo

2007-01-01T23:59:59.000Z

260

Performance of hydraulic fracturing and matrix acidizing in horizontal wellbores -- Offshore Qatar  

SciTech Connect (OSTI)

Considerable debate in the Middle East has centered upon what was previously felt to be two separate methods of enhancing revenues and daily production; hydraulic fracturing and horizontal drilling. In an effort to maximize return on investment, these two issues have been successfully combined in other areas of the world. In order to establish the suitability of this technology in this area, two horizontal wells with over 3,050m (10,000ft) of lateral section were drilled into the Cretaceous Kharaib formation, overlying the North Field, Offshore Qatar. A massive stimulation program was performed in order to evaluate the most feasible stimulation method from both a technical and economical perspective for further field development considerations.Three propped hydraulic fracturing treatments were performed using 183, 500kg (403, 700lb) of 20/40 mesh sand, and seventeen acid matrix treatments placing over 3,217,250l (850,000gals) of HCL into the lateral sections of both wells. This paper describes the performance, operation and logistical support required to complete this offshore operation with join a minimal time frame. The use of a mobile offshore jack-up platform, whereby a land based fracturing spread was placed onto the deck of a converted drilling rig is described.

Edwards, M.G.R.; Pongratz, R.

1995-11-01T23:59:59.000Z

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


261

Design of a horizontal neutron reflectometer for the European Spallation Source  

E-Print Network [OSTI]

A design study of a horizontal neutron reflectometer adapted to the general baseline of the long pulse European Spallation Source (ESS) is presented. The instrument layout comprises solutions for the neutron guide, high-resolution pulse shaping and beam bending onto a sample surface being so far unique in the field of reflectometry. The length of this instrument is roughly 55 m, enabling $\\delta \\lambda / \\lambda$ resolutions from 0.5% to 10%. The incident beam is focussed in horizontal plane to boost measurements of sample sizes of 1*1 cm{^2} and smaller with potential beam deflection in both downward and upward direction. The range of neutron wavelengths untilized by the instrument is 2 to 7.1 (12.2, ...) {\\AA}, if every (second, ...) neutron source ulse is used. Angles of incidence can be set between 0{\\deg} and 9{\\deg} with a total accessible q-range from 4*10^{-3} {\\AA}^{-1} up to 1 {\\AA}^{-1}. The instrument operates both in {\\theta}/{\\theta} (free liquid surfaces) and {\\theta}/2{\\theta} (solid/liquid, ...

Nekrassov, D; Lieutenant, K; Moulin, J -F; Strobl, M; Steitz, R

2013-01-01T23:59:59.000Z

262

Horizontal gene transfer and the evolution of transcriptionalregulation in Escherichia coli  

SciTech Connect (OSTI)

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.

Price, Morgan N.; Dehal, Paramvir S.; Arkin, Adam P.

2007-12-20T23:59:59.000Z

263

Heat transfer and pressure drop of supercritical carbon dioxide flowing in several printed circuit heat exchanger channel patterns  

SciTech Connect (OSTI)

Closed-loop Brayton cycles using supercritical carbon dioxide (SCO{sub 2}) show potential for use in high-temperature power generation applications including High Temperature Gas Reactors (HTGR) and Sodium-Cooled Fast Reactors (SFR). Compared to Rankine cycles SCO{sub 2} Brayton cycles offer similar or improved efficiency and the potential for decreased capital costs due to a reduction in equipment size and complexity. Compact printed-circuit heat exchangers (PCHE) are being considered as part of several SCO{sub 2} Brayton designs to further reduce equipment size with increased energy density. Several designs plan to use a gas cooler operating near the pseudo-critical point of carbon dioxide to benefit from large variations in thermophysical properties, but further work is needed to validate correlations for heat transfer and pressure-drop characteristics of SCO{sub 2} flows in candidate PCHE channel designs for a variety of operating conditions. This paper presents work on experimental measurements of the heat transfer and pressure drop behavior of miniature channels using carbon dioxide at supercritical pressure. Results from several plate geometries tested in horizontal cooling-mode flow are presented, including a straight semi-circular channel, zigzag channel with a bend angle of 80 degrees, and a channel with a staggered array of extruded airfoil pillars modeled after a NACA 0020 airfoil with an 8.1 mm chord length facing into the flow. Heat transfer coefficients and bulk temperatures are calculated from measured local wall temperatures and local heat fluxes. The experimental results are compared to several methods for estimating the friction factor and Nusselt number of cooling-mode flows at supercritical pressures in millimeter-scale channels. (authors)

Carlson, M. [Univ. of Wisconsin - Madison, 839 Engineering Research Building, 1500 Engineering Drive, Madison, WI 53706 (United States); Kruizenga, A. [Sandia National Laboratory (United States); Anderson, M.; Corradini, M. [Univ. of Wisconsin - Madison, 839 Engineering Research Building, 1500 Engineering Drive, Madison, WI 53706 (United States)

2012-07-01T23:59:59.000Z

264

Multi-channel blind system identification for central hemodynamic monitoring  

E-Print Network [OSTI]

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

Zhang, Yi, 1973-

2002-01-01T23:59:59.000Z

265

Solution to time-energy costs of quantum channels  

E-Print Network [OSTI]

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

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

2014-12-16T23:59:59.000Z

266

Multi-channel polarized thermal emitter  

DOE Patents [OSTI]

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

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

2013-07-16T23:59:59.000Z

267

Complete Muon Cooling Channel Design and Simulations  

SciTech Connect (OSTI)

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

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

2012-07-01T23:59:59.000Z

268

Complete Muon Cooling Channel Design and Simulations  

SciTech Connect (OSTI)

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

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

2012-05-01T23:59:59.000Z

269

Step 7: Determine Loan Marketing Channels | Department of Energy  

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

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

270

Development of general inflow performance relationships (IPR`s) for slanted and horizontal wells producing heterogeneous solution-gas drive reservoirs  

SciTech Connect (OSTI)

Since 1968, the Vogel equation has been used extensively and successfully for analyzing the inflow performance relationship (IPR) of flowing vertical wells producing by solution-gas drive. Oil well productivity can be rapidly estimated by using the Vogel IPR curve and well outflow performance. With recent interests on horizontal well technology, several empirical IPRs for solution-gas drive horizontal and slanted wells have been developed under homogeneous reservoir conditions. This report presents the development of IPRs for horizontal and slanted wells by using a special vertical/horizontal/slanted well reservoir simulator under six different reservoir and well parameters: ratio of vertical to horizontal permeability, wellbore eccentricity, stratification, perforated length, formation thickness, and heterogeneous permeability. The pressure and gas saturation distributions around the wellbore are examined. The fundamental physical behavior of inflow performance for horizontal wells is described.

Cheng, A.M.

1992-04-01T23:59:59.000Z

271

Development and application of type curves for pressure transient analysis of horizontal wells in shale gas reservoirs  

Science Journals Connector (OSTI)

Even though significant progresses have been made in the past few years, there appears to be a lack of information regarding the characterisation of shale gas formations. A major purpose of this study is to demonstrate impacts of horizontal well geometries and gas flow parameters as well as shale gas reservoir system on horizontal well production behaviour and flow regime on pressure transient analysis (PTA). Extensive numerical simulations were conducted to model transient pressure behaviour of a horizontal well and apply the results to well test analysis in shale gas reservoirs. Based on the results from numerical simulations, a set of type curves have been developed in terms of dimensionless pseudopressure and time. Results from type curve matching for synthetic pressure data in shale gas reservoirs demonstrate that the conventional analysis approach may still be applicable for the quantitative analysis on the transient gas flow behaviour and determination of formation properties. [Received: June 21, 2013; Accepted: August 6, 2013

Sung Jun Lee; Tae Hong Kim; Kun Sang Lee

2014-01-01T23:59:59.000Z

272

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

West China from DLR West China from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for China for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords China CRED CREIA DLR GHI GIS solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 4.4 MiB) text/csv icon Download Data (csv, 8.9 MiB)

273

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Ghana from DLR Ghana from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Ghana for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the documentation file for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR Ghana GHI GIS solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 504 KiB) text/csv icon Download Data (csv, 1 MiB)

274

Drilling Sideways -- A Review of Horizontal Well Technology and Its Domestic Application  

Gasoline and Diesel Fuel Update (EIA)

TR-0565 TR-0565 Distribution Category UC-950 Drilling Sideways -- A Review of Horizontal Well Technology and Its Domestic Application April 1993 Energy Information Administration Office of Oil and Gas U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Contacts This report was prepared by the Energy Information Administration, Office of Oil and Gas, under the general direction of Diane W. Lique, Director of the Reserves and Natural Gas Division, Craig H. Cranston, Chief of the Reserves and Production Branch, and David F. Morehouse, Senior Supervisory Geologist. Information regarding

275

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Ethiopia from DLR Ethiopia from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Ethiopia for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the documentation file for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR Ethiopia GEF GHI GIS solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 2.8 MiB) text/csv icon Download Data (csv, 5.6 MiB)

276

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Nepal from DLR Nepal from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Nepal for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR GEF GHI GIS Nepal solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 593.8 KiB) text/csv icon Download Data (csv, 1.2 MiB)

277

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Sri Lanka from DLR Sri Lanka from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Sri Lanka for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR GHI GIS solar Sri Lanka SWERA UNEP Data text/csv icon Download Data (csv, 296.1 KiB) application/zip icon Download Shapefile (zip, 153.7 KiB)

278

Solar: monthly global horizontal (GHI) GIS data at 10km resolution for  

Open Energy Info (EERE)

Bangladesh from DLR Bangladesh from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Bangladesh for the years 2000, 2002 and 2003. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the country report for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords Bangladesh DLR GEF GHI GIS solar SWERA UNEP Data text/csv icon Download Data (csv, 916.5 KiB) application/zip icon Download Shapefile (zip, 479.3 KiB)

279

Turbulent natural convection in a horizontal layer of small-Prandtl-number fluid  

SciTech Connect (OSTI)

Turbulent natural convection in a horizontal layer of liquid metal confined between two infinite rigid plates is studied theoretically. The layer, with uniformly distributed energy sources in the fluid, is heated from below and cooled from above. An approximate analysis of the Boussinesq equations of motion is performed for the case of small-Prandtl-number fluids to determine the temperature profiles in three different thermal regions of the layer. By matching these profiles in the regions of overlap, analytical expressions are derived for the lower and upper surface Nusselt numbers and the dimensionless turbulent core temperature as functions of the internal and external Rayleigh numbers defined respectively in terms of the volumetric heating rate and surface-to-surface temperature difference of the layer. Comparison of the present results with heat transfer data for liquid mercury is made and found to be good.

Cheung, F.B.; Shiah, S.W. (Pennsylvania State Univ., University Park (United States)); Cho, D.H.; Baker, L. Jr. (Argonne National Lab., IL (United States))

1991-11-01T23:59:59.000Z

280

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

SciTech Connect (OSTI)

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

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

1992-10-01T23:59:59.000Z

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


281

Method for forming an in situ oil shale retort with horizontal free faces  

DOE Patents [OSTI]

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.

Ricketts, Thomas E. (Grand Junction, CO); Fernandes, Robert J. (Bakersfield, CA)

1983-01-01T23:59:59.000Z

282

The determination of stochastic loads on horizontal axis wind turbine blades  

SciTech Connect (OSTI)

The FAST Code which is capable of determining structural loads of a flexible, teetering, horizontal axis wind turbine is described and comparisons of calculated loads with test data are given at two wind speeds for the ESI-80. The FAST Code models a two-bladed HAWT with degrees-of-freedom for blade bending, teeter, drive train flexibility, yaw, and windwise and crosswind tower motion. The code allows blade dimensions, stiffnesses, and weights to differ and the code models tower shadow, wind shear, and turbulence. Additionally, dynamic stall is included as are delta-3 and an underslung rotor. Load comparisons are made with ESI-80 test data in the form of power spectral density, rainflow counting occurrence histograms, and azimuth averaged bin plots. It is concluded that agreement between the FAST Code and test results is good.

Freeman, L.N.; Wilson, R.E. [Oregon State Univ., Corvallis, OR (United States). Dept. of Mechanical Engineering

1998-05-01T23:59:59.000Z

283

An evaluation of alternative horizontal curve design approaches for rural two-lane highways  

E-Print Network [OSTI]

proposed by Lamm, et al, are: 1) Good: AD s 5' or 2) Fair: 3) Poor: AV? s 9. 7 km/h (6 mi/h), 5 '& PJ'S s 10' or 9. 7 km/h (6 mi/h) + A V? ~ 19. 3 kin/h (12 mi/h), and AO&10' or BV? + 19. 3 km/h (12 nn/h) (18). Foreign Horizontal Curve Design... at the 85th percentile speed. Maximum side friction values for design speeds higher than 90 km/h (55. 9 mi/h) are more than those side fiiction values used by vehicles operating at the 85th percentile speed, due to the concerns of comfort and safety...

Voigt, Anthony Paul

2012-06-07T23:59:59.000Z

284

Predicted and actual productions of horizontal wells in heavy-oil fields  

Science Journals Connector (OSTI)

This paper discusses the comparison of predicted and actual cumulative and daily oil production. The predicted results were obtained from the use of Joshi's equation, wherein, the effects of anisotropy and eccentricity were included. The cumulative production obtained from the use of equations developed by Borisov, Giger, Renard and Dupuy resulted in errors in excess of 100%, thus, they were not considered applicable for predicting cumulative and daily flows of heavy oils in horizontal wells. The wells considered in this analysis varied from 537 to 1201 metres with corresponding well bores of 0.089 to. 0.110 m. Using Joshi's equation, the predicted cumulative oil-production was within a 20% difference for up to 12 months of production for long wells and up to 24 months for short wells. Short wells were defined as those being under 1000 m.

Peter Catania

2000-01-01T23:59:59.000Z

285

Solar: monthly and annual average global horizontal (GHI) GIS data at 10km  

Open Energy Info (EERE)

Kenya from DLR Kenya from DLR Dataset Summary Description (Abstract): Data of high resolution (10kmx10km) Global Horizontal Irradiance (GHI) for Kenya for the years 2000, 2001 and 2002. The data are available for monthly and annual sums stored in a ESRI-Shapefile. Please read the documentation file for additional information. (Purpose): The data are helpful for the assessment of the solar potential of the country and can give project developer a first impression of the solar resource of the country. Source DLR - Deutsches Zentrum für Luft- und Raumfahrt Date Released October 31st, 2004 (10 years ago) Date Updated November 01st, 2007 (7 years ago) Keywords DLR GEF GHI GIS Kenya NREL solar SWERA UNEP Data application/zip icon Download Shapefile (zip, 1.3 MiB) text/csv icon Download Data (csv, 2.5 MiB)

286

South America Global Horizontal SR Solar Model from INPE and LABSOLAR |  

Open Energy Info (EERE)

727 727 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142256727 Varnish cache server South America Global Horizontal SR Solar Model from INPE and LABSOLAR Dataset Summary Description (Abstract): Mean values of Global Horizontal Solar Radiation in kWh/m2/day for 40km cells for 1 year (month, season, year) based on data from 1995 to 2005 (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders. (Supplemental Information): The BRASIL-SR model (developed by INPE - National Institute for Space Research) and the ARCVIEW software were used to produce the dataset and SHAPE files. The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory. The BRASIL-SR model is not validated for areas covered by snow.

287

Comparison of transient horizontal magnetic fields in a plage region and in the quiet Sun  

E-Print Network [OSTI]

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.

Ryohko Ishikawa; Saku Tsuneta

2008-12-09T23:59:59.000Z

288

Scripps Channel 1 | Open Energy Information  

Open Energy Info (EERE)

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

289

Scripps Channel 2 | Open Energy Information  

Open Energy Info (EERE)

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

290

Weak multiplicativity for random quantum channels  

E-Print Network [OSTI]

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

Montanaro, Ashley

2011-01-01T23:59:59.000Z

291

Optimal unitary dilation for bosonic Gaussian channels  

SciTech Connect (OSTI)

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

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

2011-08-15T23:59:59.000Z

292

Longitudinal profile of channels cut by springs  

E-Print Network [OSTI]

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

Devauchelle, O.

293

Channelized voice over digital subscriber line  

E-Print Network [OSTI]

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

Habib, A.; Saiedian, Hossein

2002-10-01T23:59:59.000Z

294

Message passing with queues and channels  

DOE Patents [OSTI]

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

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

2013-09-24T23:59:59.000Z

295

Flag flutter in inviscid channel flow  

E-Print Network [OSTI]

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

Alben, Silas

2014-01-01T23:59:59.000Z

296

Genetic Engineering and Cardiac Ion Channels  

Science Journals Connector (OSTI)

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

Andrew A. Grace; Richard C. Saumarez…

1999-01-01T23:59:59.000Z

297

Multi-channel coded-aperture photography  

E-Print Network [OSTI]

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

Baek, Jongmin

2008-01-01T23:59:59.000Z

298

Time varying channels : characterization, estimation, and detection  

E-Print Network [OSTI]

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

Ricklin, Nathan D.

2010-01-01T23:59:59.000Z

299

A study of the appearance of tau neutrinos from a gamma ray burst by detecting their horizontal electromagnetic showers  

E-Print Network [OSTI]

We explore the possibilty of detecting horizontal electromagnetic showers of tau neutrinos from individual gamma ray bursts, in large scale detectors like HiRes and Telescope Array. We study the role of the parameters of a gamma ray burst in determining the expected number of tau events from that burst. The horizontal beam of tau leptons produce visible signals in the atmosphere. We find that there is a slim chance of observing tau lepton appearances from GRBs with Telescope Array. The number of signals is strongly dependent on the Lorentz factor $\\Gamma$, redshift $z$ of a GRB, energy emitted in muon neutrinos and antineutrinos $E_{\

Nayantara Gupta

2003-05-30T23:59:59.000Z

300

Digitally Assisted Multi-Channel Receivers  

E-Print Network [OSTI]

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

Pentakota, Krishna Anand Santosh Spikanth

2011-10-21T23:59:59.000Z

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


301

Quantum capacity of channel with thermal noise  

E-Print Network [OSTI]

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

Xiao-yu Chen

2006-02-11T23:59:59.000Z

302

No Fracking Way! A Study on the Spatial Patterns of and Changes in Perception and Distance from a Michigan Horizontal Hydraulic Fracturing Site.  

E-Print Network [OSTI]

?? The research investigates whether Michigan residents' perception of risk from an oil and natural gas (ONG) well site that employs the use of horizontal… (more)

McEwen, Shannon

2014-01-01T23:59:59.000Z

303

Horizontal well construction/completion process in a Gulf of Mexico unconsolidated sand: development of baseline correlations for improved drill-in fluid cleanup practices.  

E-Print Network [OSTI]

??This thesis examines, in detail, the procedures and practices undertaken in the drilling and completion phases of a Gulf of Mexico horizontal well in an… (more)

Lacewell, Jason Lawrence

2012-01-01T23:59:59.000Z

304

The flow and heat transfer characteristics of multi-thermal fluid in horizontal wellbore coupled with flow in heavy oil reservoirs  

Science Journals Connector (OSTI)

Abstract As a new improved oil-recovery technique, multi-thermal fluid injection technology through a horizontal well has been widely used in the development process of heavy oil reservoirs. The flow and heat transfer characteristic of multi-thermal fluid in horizontal wellbore is significantly important for the productivity evaluation and parameters design of the horizontal well. Considering the specific physical properties of multi-thermal fluid, fluid absorption in perforation holes and pressure drop characteristics along the horizontal wellbore, this paper developed the flow and heat transfer model of multi-thermal fluid in perforated horizontal wellbore. In order to evaluate the heating effect of the multi-thermal fluid, a concept of effective heating length of a horizontal well is proposed. Then, a sensitivity analysis process is performed to study the influence of reservoir/fluid parameters and operating parameters on the flowing process of multi-thermal fluid in horizontal wellbore. Simultaneously, using the method of orthogonal numerical test, differential analysis and variance analysis are also conducted. Results show that the flowing process of multi-thermal fluid in horizontal wellbore includes a single-phase flowing process and a gas–liquid two-phase flowing process. The influence of oil viscosity on the flow and heat transfer characteristics of multi-thermal fluid in horizontal wellbore is most significant. Thereafter, the solution of our semi-analytical model is compared against the test results of an actual horizontal well from an oilfield in China. It is shown that the model results are in good agreement with the real test results. This model could be used to calculate and predict the flow and heat transfer characteristics of multi-thermal fluid (or saturated steam) in a perforated horizontal wellbore.

Xiaohu Dong; Huiqing Liu; Zhaoxiang Zhang; Changjiu Wang

2014-01-01T23:59:59.000Z

305

Statistical correlation between hourly and daily values of solar radiation on horizontal surface at sea level in the Italian climate  

E-Print Network [OSTI]

219- Statistical correlation between hourly and daily values of solar radiation on horizontal- nalières du rayonnement solaire. Abstract. 2014 The knowledge of hourly data of solar radiation is required data measured in Italian stations and propose a method to estimate hourly solar radiation

Boyer, Edmond

306

Geological aspects of drilling horizontal wells in steam flood reservoirs, west side, southern San Joaquin Valley, California  

SciTech Connect (OSTI)

Shell Western E P Inc. has drilled 11 horizontal wells in four mature steam floods in the Coalinga, South Belridge, and Midway-Sunset fields. Two medium radius wells are producing from the Pliocene Etchegoin Formation in Coalinga. One medium radius well is producing from the Pleistocene Tulare Formation in South Belridge field. Three short radius and five medium radius wells are producing from the upper Miocene, Sub-Hoyt and Potter sands in Midway-Sunset field. Horizontal wells at the base of these reservoirs and/or structurally downdip near the oil-water contact are ideally suited to take advantage of the gravity drainage production mechanism. Reservoir studies and production experience have shown these horizontal wells should increase reserves, improve recovery efficiency, improve the oil-steam ratio, and improve project profitability. Geological considerations of targeting the wells vary between fields because of the different depositional environments and resulting reservoir characteristics. The thin sands and semicontinuous shales in the Tulare Formation and the Etchegoin Formation require strict structural control on the top and base of the target sand. In the Sub-Hoyt and Potter sands, irregularities of the oil-water contact and sand and shale discontinuities must be understood. Logging and measurement while drilling provide geosteering capability in medium radius wells. Teamwork between all engineering disciplines and drilling and producing operations has been critical to horizontal well success.

Crough, D.D.; Holman, M.L.; Sande, J.J. (Shell Western E P Inc., Bakersfield, CA (United States))

1994-04-01T23:59:59.000Z

307

Analytical and semi-analytical solutions of horizontal well capture times under no-ow and constant-head boundaries  

E-Print Network [OSTI]

for oil and gas production in the past decade [15,21]. Extensive studies on pressure anal- ysis with surface restrictions (e.g., land®lls, lagoons, buildings, wetlands, lakes, utility lines, tanks), (2 organic contaminants. Fluid and gas ¯ows to a horizontal well or trench have been studied before. An early

Zhan, Hongbin

308

Apparatus for efficient sidewall containment of molten metal with horizontal alternating magnetic fields utilizing a ferromagnetic dam  

DOE Patents [OSTI]

An apparatus is disclosed for casting sheets of metal from molten metal. The apparatus includes a containment structure having an open side, a horizontal alternating magnetic field generating structure and a ferromagnetic dam. The magnetic field and the ferromagnetic dam contain the molten metal from leaking out side portions of the open side of the containment structure. 25 figs.

Praeg, W.F.

1997-02-11T23:59:59.000Z

309

Gravity Waves in a Horizontal Shear Flow. Part I: Growth Mechanisms in the Absence of Potential Vorticity Perturbations  

E-Print Network [OSTI]

Gravity Waves in a Horizontal Shear Flow. Part I: Growth Mechanisms in the Absence of Potential (Manuscript received 7 May 2007, in final form 17 July 2008) ABSTRACT Interaction of internal gravity waves of closed-form solutions. Localized wave packet trajectories are obtained, the energy growth mechanisms

Farrell, Brian F.

310

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallel-plate electrolysis  

E-Print Network [OSTI]

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallel-plate electrolysis Yilong Han Department of Physics and Astronomy, University of Pennsylvania 209, they appear to result from an underlying electroconvective instability during electrolysis in the parallel

Grier, David

311

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallel-plate electrolysis  

E-Print Network [OSTI]

Colloidal electroconvection in a thin horizontal cell: II. Bulk electroconvection of water during parallel-plate electrolysis Yilong Han Department of Physics and Astronomy, University of Pennsylvania 209 electrolysis in the parallel plate geometry. This contrasts with recent theoretical results suggesting

Grier, David

312

Economic Impact of Reservoir Properties, Horizontal Well Length and Orientation on Production from Shale Formations: Application to New  

E-Print Network [OSTI]

SPE 125893 Economic Impact of Reservoir Properties, Horizontal Well Length and Orientation production. Economic analyses are performed to identify and rank the impact of the above parameters. (3) The lack of dense natural fractures does not eliminate the potential for an economic fracture

Mohaghegh, Shahab

313

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

E-Print Network [OSTI]

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

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

2009-01-01T23:59:59.000Z

314

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

E-Print Network [OSTI]

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

Bhattad, Kapil

2008-10-10T23:59:59.000Z

315

Recovery of bypassed oil in the Dundee Formation using horizontal drains. Annual report, March 1996--March 1997  

SciTech Connect (OSTI)

This Class II field project has demonstrated that economic quantities of hydrocarbons can be produced from abandoned or nearly abandoned fields in the Dundee Formation of Central Michigan using horizontal drilling technology. The site selected for the demonstration horizontal well was Crystal Field, a nearly abandoned Dundee oil field in Montcalm County, Michigan. This field had produced over 8 million barrels of oil, mostly in the 1930`s and 1940`s. At the height of development, Crystal Field produced from 193 wells, but by 1995, only seven producing wells remained, each producing less than 10 bbls/day. A horizontal well, the TOW 1-3, drilled as a field demonstration pilot was successful, producing at rate of 100 bbls of oil per day with a zero water cut. Although the well is capable of producing at a of 500+ bbls/day, the production rate is being kept low deliberately to try to prevent premature water coning. Cumulative production exceeded 50,000 bbls of oil by the end of April, 1997 and lead to the permitting and licensing of several dozen Dundee wells by project end. Twelve of these permits were for continued development of Crystal Field. Two long horizontal wells were drilled successfully in Crystal after the TOW 1-3, but were disappointing economically. Core and logs from the Dundee interval were recovered from a vertical borehole at the same surface location. The addition of several horizontal wells will likely add another 2 million bbls (or more) to the cumulative production of the field over the next few years. If other abandoned Dundee fields are re-developed in a similar manner, the additional oil produced could exceed 80 million barrels.

NONE

1998-04-01T23:59:59.000Z

316

Effet de l'orientation d'un champ magnétique horizontal sur la stabilité de l'écoulement de Hadley  

Science Journals Connector (OSTI)

Résumé Une étude numérique basée sur la théorie linéaire de stabilité est menée afin de déterminer l'influence d'un champ magnétique horizontal sur les modes marginaux se développant dans une couche fluide soumise à un gradient de température horizontal. Un intérêt particulier est porté sur l'influence de l'orientation du champ magnétique sur la nature et les valeurs des seuils critiques des modes instables. Les calculs montrent, que lorsqu'il est soumis à un champ magnétique incliné dans le plan horizontal, ce type d'écoulement dit de Hadley, peut présenter des ondes obliques, jusqu'alors inexistantes aussi bien lorsqu'aucun champ magnétique n'est appliqué que pour des champs magnétiques verticaux, transversaux ou longitudinaux. Il en est de même pour l'effet stabilisant qui connaît un comportement asymptotique inédit. Pour citer cet article : S. Kaddeche et al., C. R. Mecanique 331 (2003). A numerical study based on the linear stability analysis is undertaken, in order to determine the influence of a horizontal magnetic field on the marginal modes occuring in a fluid layer subjected to a horizontal temperature gradient. A particular interest is devoted to the influence of the magnetic field orientation on both nature and critical values of the unstable modes. Calculations show, that when it is subjected to such a magnetic field, this type of flow, known as Hadley flow, can present oblique waves, hitherto non-existent when no magnetic field is applied and even when a vertical, a transverse or a longitudinal magnetic field is imposed. A new asymptotic behavior is also observed for the stabilizing effects. To cite this article: S. Kaddeche et al., C. R. Mecanique 331 (2003).

Slim Kaddeche; Adel Gharbi; Daniel Henry; Hamda Ben Hadid; Taïeb Lili

2003-01-01T23:59:59.000Z

317

Coupled-channel continuum eigenchannel basis  

E-Print Network [OSTI]

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

R. M. Id Betan

2013-11-18T23:59:59.000Z

318

Seepage forces, important factors in the formation of horizontal hydraulic1 fractures and bedding-parallel fibrous veins ("beef" and "cone-in-cone")2  

E-Print Network [OSTI]

1 Seepage forces, important factors in the formation of horizontal hydraulic1 fractures and bedding24 may lead, either to tensile hydraulic fracturing, or to dilatant shear failure. We suggest that25 Terzaghi's concepts, leads to the conclusion that, for the18 fractures to be horizontal, either the rock

Paris-Sud XI, Université de

319

Peter Agre and Aquaporin Water Channels  

Office of Scientific and Technical Information (OSTI)

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

320

Renormalizing Chiral Nuclear Forces: Triplet Channels  

SciTech Connect (OSTI)

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

Bingwei Long, Chieh-Jen Yang

2012-03-01T23:59:59.000Z

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


321

Brazil Global Horizontal Solar Radiation Model (10km) from INPE | OpenEI  

Open Energy Info (EERE)

10km) from INPE 10km) from INPE Dataset Summary Description (Abstract): Global horizontal solar radiation in kWh/m2/day for 1 year organized into cells with 10km x 10km (Purpose): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files (Supplemental Information): The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took part in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory

322

Brazil Global Horizontal Solar Radiation Model (40km) from INPE | OpenEI  

Open Energy Info (EERE)

40km) from INPE 40km) from INPE Dataset Summary Description (Abstract): Global horizontal solar radiation in kWh/m2/day for 1 year organized into cells with 40km x 40km (Purpose): To provide a set of consistent, reliable, verifiable, and accessible global data sets for international and in-country investors and other stakeholders (Supplemental Information): The BRASIL-SR model and the SPRING software (both developed by INPE - National Institute for Space Research) were used to produce the dataset and SHAPE files. The assessment of reliability levels of the BRASIL-SR model were performed through the evaluation of the deviations shown by the estimated values for solar radiation flux vis-à-vis the values measured at the surface (ground truth). This evaluation was done in two phases. The first phase consisted in an inter-comparison between the core radiation transfer models adopted by the SWERA Project to map the solar energy in the various countries participating in the project. The HELIOSAT model took art in this phase like benchmark due to its employment to map solar energy resources in countries from European Union. In the second phase, the solar flux estimates provided by the BRASIL-SR model were compared with measured values acquired at several solarimetric stations spread along the Brazilian territory.

323

DOUBLE HORIZONTAL BRANCHES IN NGC 6440 AND NGC 6569 UNVEILED BY THE VVV SURVEY  

SciTech Connect (OSTI)

We report the discovery of a peculiar horizontal branch (HB) in NGC 6440 and NGC 6569, two massive and metal-rich Galactic globular clusters (GGCs) located in the Galactic bulge, within 4 kpc from the Galactic center. In both clusters, two distinct clumps are detected at the level of the cluster HB, separated by only {approx}0.1 mag in the K{sub s} band. They were detected with IR photometric data collected with the 'VISTA Variables in the Via Lactea' Survey, and confirmed in independent IR catalogs available in the literature and Hubble Space Telescope optical photometry. Our analysis demonstrates that these clumps are real cluster features, not a product of field contamination or interstellar reddening. The observed split HBs could be a signature of two stellar sub-populations with different chemical composition and/or age, as recently found in Terzan 5, but it cannot be excluded that they are caused by evolutionary effects, in particular for NGC 6440. This interpretation, however, requires an anomalously high helium content (Y > 0.30). Our discovery suggests that such a peculiar HB morphology could be a common feature of massive, metal-rich bulge GGCs.

Mauro, Francesco; Bidin, Christian Moni; Cohen, Roger; Geisler, Doug; Chene, Andre-Nicolas; Villanova, Sandro [Departamento de Astronomia, Universidad de Concepcion, Casilla 160-C, Concepcion (Chile); Minniti, Dante; Catelan, Marcio, E-mail: fmauro@astroudec.cl [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Casilla 306, Santiago (Chile)

2012-12-20T23:59:59.000Z

324

Horizontal-axis wind-system rotor performance model comparison: a compendium  

SciTech Connect (OSTI)

This compendium consists of four reports, the purpose of which is to evaluate performance prediction methods for horizontal-axis wind turbines. The reports were prepared by four separate contractors. Oregon State University, AeroVironment, Inc., Aerospace Systems, Inc., and United Technologies Research Center (UTRC). Three of the four contractors used a blade-element/momentum analysis, while the fourth (UTRC) utilized a lifting line/prescribed wake analysis. These contractors were to apply their prediction methods to two rotors, that of the Enertech 1500 and that of the 1/3-scale UTRC 8 kW turbines. Results from the four prediction methods are compared with actual test data gathered via Controlled Velocity Testing (CVT), carried out by the Rocky Flats Wind Energy Research Center, operated by Rockwell International for the US Department of Energy. The conclusions of the four reports are reviewed in an introduction prepared by Rockwell International. For the Enertech 1500, rotor performance predictions closely agreed with CVT data. Yet, because of the lack of high tip speed ratio data, verification of the Glauert momentum theory was not possible. Predictions regarding the UTRC 1/3 scale 8 kW rotor did not agree well with test results. The reasons cited for the discrepancies center on inadequate airfoil section data and the varying blade pitch angles of the unique UTRC flexbeam rotor.

Not Available

1983-02-01T23:59:59.000Z

325

CO2 mass transfer and conversion to biomass in a horizontal gas–liquid photobioreactor  

Science Journals Connector (OSTI)

Abstract This study deals with CO2 mass transfers and biomass conversion in an industrial horizontal tubular photobioreactor. An analytical approach is used to determine an expression modeling the influence of CO2 mass transfers on the overall biomass conversion efficiency for a given culture broth, heat and light conditions. Fluid mechanics and mass transfer are predicted with a classical two-phase flow approach (Taitel and Dukler, 1976) combined with a dissolution correlation developed and tested in the laboratory (Valiorgue et al., 2011). The influence of the stripping gas, removing the excess of oxygen in the liquid, on the conversion to biomass efficiency is shown to be not negligible. The expression is used to evaluate how the photobioreactor's design and process parameters can be tuned in order to improve biomass conversion efficiency. The biomass conversion efficiency evolution with the photobioreactor's length was found to behave asymptotically and it was explained by the relative orders of magnitude of gas dissolution and gas stripping. It has been shown that the gas flow rate for stripping and therefore the oxygen removal will be limited when further increasing the industrial photobioreactor's length for a given objective of CO2 conversion to biomass efficiency.

P. Valiorgue; H. Ben Hadid; M. El Hajem; L. Rimbaud; A. Muller-Feuga; J.Y. Champagne

2014-01-01T23:59:59.000Z

326

Modeling and analysis of ORNL horizontal storage tank mobilization and mixing  

SciTech Connect (OSTI)

The retrieval and treatment of radioactive sludges that are stored in tanks constitute a prevalent problem at several US Department of Energy sites. The tanks typically contain a settled sludge layer with non-Newtonian rheological characteristics covered by a layer of supernatant. The first step in retrieval is the mobilization and mixing of the supernatant and sludge in the storage tanks. Submerged jets have been proposed to achieve sludge mobilization in tanks, including the 189 m{sup 3} (50,000 gallon) Melton Valley Storage tanks (MVST) at Oak Ridge National Laboratory (ORNL) and the planned 378 m{sup 3} (100,000 gallon) tanks being designed as part of the MVST Capacity Increase Project (MVST-CIP). This report focuses on the modeling of mixing and mobilization in horizontal cylindrical tanks like those of the MVST design using submerged, recirculating liquid jets. The computer modeling of the mobilization and mixing processes uses the TEMPEST computational fluid dynamics program (Trend and Eyler 1992). The goals of the simulations are to determine under what conditions sludge mobilization using submerged liquid jets is feasible in tanks of this configuration, and to estimate mixing times required to approach homogeneity of the contents.

Mahoney, L.A.; Terrones, G.; Eyler, L.L.

1994-06-01T23:59:59.000Z

327

CFD Calculation of Internal Natural Convection in the Annulus between Horizontal Concentric Cylinders  

SciTech Connect (OSTI)

The objective of this heat transfer and fluid flow study is to assess the ability of a computational fluid dynamics (CFD) code to reproduce the experimental results, numerical simulation results, and heat transfer correlation equations developed in the literature for natural convection heat transfer within the annulus of horizontal concentric cylinders. In the literature, a variety of heat transfer expressions have been developed to compute average equivalent thermal conductivities. However, the expressions have been primarily developed for very small inner and outer cylinder radii and gap-widths. In this comparative study, interest is primarily focused on large gap widths (on the order of half meter or greater) and large radius ratios. From the steady-state CFD analysis it is found that the concentric cylinder models for the larger geometries compare favorably to the results of the Kuehn and Goldstein correlations in the Rayleigh number range of about 10{sup 5} to 10{sup 8} (a range that encompasses the laminar to turbulent transition). For Rayleigh numbers greater than 10{sup 8}, both numerical simulations and experimental data (from the literature) are consistent and result in slightly lower equivalent thermal conductivities than those obtained from the Kuehn and Goldstein correlations.

N.D. Francis, Jr; M.T. Itamura; S.W. Webb; D.L. James

2002-10-01T23:59:59.000Z

328

Validation of the NSRDB-SUNY global horizontal irradiance in California  

SciTech Connect (OSTI)

Satellite derived global horizontal solar irradiance (GHI) from the SUNY modeled dataset in the National Solar Radiation Database (NSRDB) was compared to measurements from 27 weather stations in California during the years 1998-2005. The statistics of spatial and temporal differences between the two datasets were analyzed and related to meteorological phenomena. Overall mean bias errors (MBE) of the NSRDB-SUNY indicated a GHI overprediction of 5%, which is smaller than the sensor accuracy of ground stations. However, at coastal sites, year-round systematic positive MBEs in the NSRDB-SUNY data up to 18% were observed and monthly MBEs increased up to 54% in the summer months during the morning. These differences were explained by a tendency for the NSRDB-SUNY model to overestimate GHI under cloudy conditions at the coast during summer mornings. A persistent positive evening MBE which was independent of site location and cloudiness occurred at all stations and was explained by an error in the time-shifting method applied in the NSRDB-SUNY. A correction method was derived for these two errors to improve the accuracy of the NSRDB-SUNY data in California. (author)

Nottrott, Anders; Kleissl, Jan [Mechanical and Aerospace Engineering, University of California, San Diego (United States)

2010-10-15T23:59:59.000Z

329

The dependence of climate sensitivity on the horizontal resolution of a GCM  

SciTech Connect (OSTI)

The impact of changing the horizontal resolution of a version of the Hadley Centre GCM is investigated in present-day and 2 x CO{sub 2} climate simulations. The use of higher resolution generally produces favorable changes. The main improvements arc in the Southern Hemisphere in both solstitial seasons and in the Tropics and Northern Hemisphere in June, July, and August (JJA). Aspects of the model that show no improvement include the general coldness of the troposphere in all seasons and the pressure pattern in Northern Hemisphere winter. The global mean annual-mean warming due to increased CO{sub 2} is very similar, but there are differences in the latitudinal distribution of the zonally averaged temperature response. In winter these differences can be related to the response of the Northern Hemisphere storm tracks. There is a considerable poleward and downstream shift of the high-frequency variability at higher resolution, which is only weakly simulated at low resolution. In JJA, the response of the tropical circulation and precipitation is very different where there were large differences in the unperturbed simulation. 39 refs., 20 figs., 2 tabs.

Senior, C.A. [Hadley Centre for Climate Prediction and Research, Berkshire (Germany)

1995-11-01T23:59:59.000Z

330

Applying micro scales of horizontal axis wind turbines for operation in low wind speed regions  

Science Journals Connector (OSTI)

Abstract Utilizing the micro scales of wind turbines could noticeably supply the demand for the electricity in low wind speed regions. Aerodynamic design and optimization of the blade, as a main part of a wind turbine, were addressed in the study. Three micro scales of horizontal axis wind turbines with output power of 0.5, 0.75 and 1 kW were considered and the geometric optimization of the blades in terms of the two involved parameters, chord and twist, was undertaken. In order to improve the performance of the turbines at low wind speeds, starting time was included in an objective function in addition to the output power – the main and desirable goal of the wind turbine blade design. A purpose-built genetic algorithm was employed to maximize both the output power and the starting performance which were calculated by the blade-element momentum theory. The results emphasize that the larger values of the chord and twist at the root part of the blades are indispensable for the better performance when the wind speed is low. However, the noticeable value of the generator resistive torque could largely delay the starting of the micro-turbines especially for the considered smaller size, 0.5 kW, where the starting aerodynamic torque could not overcome the generator resistive torque. For that size, an increase in the number of blades improved both the starting performance and also output power.

Abolfazl Pourrajabian; Reza Ebrahimi; Masoud Mirzaei

2014-01-01T23:59:59.000Z

331

Characterization of Dosimetry of the BMRR Horizontal Thimble Tubes and Broad Beam Facility.  

SciTech Connect (OSTI)

The Brookhaven Medical Research Reactor was a 5 mega-watt, light-water cooled and heavy-graphite moderated research facility. It has two shutter-equipped treatment rooms, three horizontally extended thimble tubes, and an ex-core broad beam facility. The three experimental thimbles, or activation ports, external to the reactor tank were designed for several uses, including the investigations on diagnostic and therapeutic methods using radioactive isotopes of very short half-life, the analysis of radiation exposure on tissue-equivalent materials using a collimated neutron beam, and the evaluation of dose effects on biological cells to improve medical treatment. At the broad beam facility where the distribution of thermal neutrons was essential uniform, a wide variety of mammalian whole-body exposures were studied using animals such as burros or mice. Also studied at the broad beam were whole-body phantom experiments, involving the use of a neutron or photon beam streaming through a screen to obtain the flux spectrum suitable for dose analysis on the sugar-urea-water mixture, a tissue-equivalent material. Calculations of the flux and the dose at beam ports based on Monte Carlo particle-transport code were performed, and measurements conducted at the same tally locations were made using bare or cadmium-covered gold foils. Analytical results, which show good agreement with measurement data, are presented in the paper.

Hu,J.P.; Reciniello, R.N.; Holden, N.E.

2008-05-05T23:59:59.000Z

332

Turbulence effects on the wake flow and power production of a horizontal-axis wind turbine  

Science Journals Connector (OSTI)

Abstract This study experimentally investigated the effects of ambient turbulence on the wake flows and power production of a horizontal-axis wind turbine. The approaching flows included low-turbulence smooth flow and grid-generated turbulent flow. The profiles of time-averaged velocity, turbulence intensity and Reynolds stress from the intermediate to the far-wake regions were measured and compared for smooth and turbulent flows. Based on the measured data, prediction models for the centerline velocity deficit, turbulence intensity, wake radius and velocity profile were proposed. In addition, the experimental results showed that the power productions in the grid-generated turbulent flows were slightly higher than that in the smooth flow. But the power loss due to the velocity deficit in the wake flow was larger than 50% when the downwind distance was less than 12D (D is the rotor diameter). An empirical relation between the power production and the downwind distance x and lateral distance y was proposed.

Chia-Ren Chu; Pei-Hung Chiang

2014-01-01T23:59:59.000Z

333

Pollution control: A Houston Ship Channel issue.  

E-Print Network [OSTI]

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

Williams, Edward Barney

2012-06-07T23:59:59.000Z

334

Nonlinear Wavelength Selection in a Channel P G Daniels1  

E-Print Network [OSTI]

applications, such as crystal growth processes, solar collectors and heat exchangers, motion occurs within are horizontal spatial variables, 2 = 2/x2 + 2/y2, is a control parameter and u = u(x, y, t) is a two

Skeldon, Anne C.

335

SYSTEM MODELING AND ANALYSIS USING COMMUNICATION CHANNELS  

Science Journals Connector (OSTI)

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

Bunyamin Ozaydin; Murat M. Tanik

2011-01-01T23:59:59.000Z

336

Glass fiber channels laser light to robot  

Science Journals Connector (OSTI)

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

1983-11-28T23:59:59.000Z

337

Perspective Ion Channels: From Conductance to Structure  

E-Print Network [OSTI]

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

Bezanilla, Francisco

338

TRESK potassium channel in human T lymphoblasts  

SciTech Connect (OSTI)

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

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

2013-05-03T23:59:59.000Z

339

Fermi Liquid Instabilities in the Spin Channel  

SciTech Connect (OSTI)

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

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

2010-03-16T23:59:59.000Z

340

One Component Two Phase Flow in Horizontal and Vertical Ducts: Some Basic Considerations  

SciTech Connect (OSTI)

For a description and analysis of the flow they consider the conservation equations of the two phases separately, but in thermal and mechanical equilibrium, coupled by the itnerface shear forces (two fluid model, drift flux model). Coupling may be weak or strong, depending on Froude and Mach numbers of the flow. The fluid is highly compressible, not because the individual phases move at such speeds that their individual density changes are significant but because evapiration (phase change) results in large density changes of the system at moderate pressure or temperature changes once flashing occurs. The slip between the phases is caused by unequal wall shear stress, acceleration of the fluid or gravitational forces and is hindered by the interface interaction. if they denote by {gamma} the ratio of the liquid density to the vapor density and by {sigma} the ratio of the vapor speed to the liquid speed they find that in horizontal flows {sigma} = {gamma}{sup 1/2} yields the maximum slip (neglecting acceleration effects) that can be reached with no interface force acting (assuming equal friction coefficients for both phases at the wall). If one investigates the conditions of thermodynamic flow similarity between different substances in two phase flow, one finds that the latent heat of vaporization is the principal controlling parameter. Thus, a 5 cm diameter test section in two phase R-114, at room temperature, corresponds to a 30 cm diameter duct in water-steam at boiling conditions at high temperatures such as encountered in geothermal and other power production systems.

Maeder, Paul F.; Dickinson, David A.; Nikitopoulos, Dimitris E.

1983-12-15T23:59:59.000Z

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341

Prototype pushing robot for emplacing vitrified waste canisters into horizontal disposal drifts  

SciTech Connect (OSTI)

Within the French Underground Disposal concept, as described in ANDRA's (Agence Nationale pour la Gestion des Dechets Radioactifs) Dossier 2005, the Pushing Robot is an application envisaged for the emplacement (and the potential retrieval) of 'Vitrified waste packages', also called 'C type packages'. ANDRA has developed a Prototype Pushing Robot within the framework of the ESDRED Project (Engineering Studies and Demonstration of Repository Design) which is co-funded by the European Commission as part of the sixth EURATOM Research and Training Framework Programme (FP6) on nuclear energy (2002 - 2006). The Rationale of the Pushing Robot technology comes from various considerations, including the need for (1) a simple and robust system, capable of moving (and potentially retrieving) on up to 40 metres (m), a 2 tonne C type package (mounted on ceramic sliding runners) inside the carbon steel sleeve constituting the liner (and rock support) of a horizontal disposal cell, (2) small annular clearances between the package and the liner, (3) compactness of the device to be transferred from surface to underground, jointly with the package, inside a shielding cask, and (4) remote controlled operations for the sake of radioprotection. The initial design, based on gripping supports, has been replaced by a 'technical variant' based on inflatable toric jacks. It was then possible, using a test bench, to check that the Pushing Robot worked properly. Steps as high as 7 mm were successfully cleared by a dummy package pushed by the Prototype.. Based on the lessons learned by ANDRA's regarding the Prototype Pushing Robot, a new Scope of Work is being written for the Contract concerning an Industrial Scale Demonstrator. The Industrial Scale Demonstration should be completed by the end of the second Quarter of 2008. (authors)

Londe, L.; Seidler, W.K.; Bosgiraud, J.M.; Guenin, J.J. [Agence Nationale pour la Gestion des Dechets Radioactifs (ANDRA), 92 - Chatenay Malabry (France); Devaux, P. [CREATIV ALLIANCE, 78 - Viroflay (France)

2007-07-01T23:59:59.000Z

342

Assessment of SUNY Version 3 Global Horizontal and Direct Normal Solar Irradiance in Canada  

Science Journals Connector (OSTI)

In this paper, hourly, daily and annual solar resource data derived form the latest SUNY solar model (version 3) using visible and infrared satellite data is analysed and compared with ground measured solar data from eighteen northern- latitude locations distributed all across Canada. The statistics of spatial and temporal differences between the two datasets obtained from the two versions of SUNY model, i.e., V1 and V3, are analysed for both global horizontal irradiance (GHI) and direct normal irradiance (DNI). SUNY V3 GHI and DNI data set is also compared to a dataset produced by the MAC3 cloud layer model for ten northern-latitude locations across Canada. The MAC3 model, using ground-based data, is the basis of the weather design input data files referred to in the current Canadian Model National Energy Code. It is also the model used for generating the CWEEDS (Canadian Weather Energy and Engineering Data Sets) long term hourly dataset, which is in turn used to derive the CWEC files (Canadian Weather year for Energy Calculations) also called typical meteorological years. CWEC files are used for design and analysis in various applications, including buildings heating and cooling as well as solar systems. Overall, results show that SUNY V3 has improved slightly compared to SUNY V1 in terms of estimating global and beam irradiance. Comparison of the SUNY V3 beta model with the MAC3 model seems to indicate that SUNY V3 model is resulting in better DNI estimates than those derived by the MAC3 model. Both SUNY V3 and MAC 3 models give similar estimates for GHI.

Reda Djebbar; Robert Morris; Didier Thevenard; Richard Perez; James Schlemmer

2012-01-01T23:59:59.000Z

343

Consider tweaking horizontal dispersion at the IP in order to achieve monochromatic collisions, and remove energy bias  

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

4 4 SLAC-TN-04-003 February 19, 2004 Abstract This note documents a set of expressions used to explore the issue of whether or not it is reasonable to consider a conventional positron source for a Tesla formatted beam. The critical issu Monochromatization Option for NLC Collisions Andrei Seryi, Tor Raubenheimer Stanford Linear Accelerator Center Stanford University 2575 Sand Hill Road Menlo Park, CA Abstract: In this note, we consider an option for NLC operation where the Interaction Point beam parameters are adjusted in order to increase the energy resolution. This is achieved by squeezing the horizontal betatron function at the IP and simultaneously introducing a horizontal dispersion (with a different sign for electron and positron

344

Improved sweep efficiency through the application of horizontal well technology in a mature combustion EOR project: Battrum Field, Saskatchewan, Canada  

SciTech Connect (OSTI)

In-situ combustion has been employed in the Battrum field since 1964. Although the field has responded favorably to combustion, efficiency of the horizontal displacement process appears to be poor in some areas of the field. Injected air and combustion gases accumulate at the top of the reservoir, and injected water moves into a zone of relatively high mobile water saturation, occurring at the base of the reservoir. Rapid breakthrough of the injected fluids increases operating costs due to high gas-oil ratios. Placement of horizontal wells below the combustion gas cap, and conversion to a vertical displacement process is expected to increase oil rate, improve oil recovery, and reduce operating costs.

Ames, B.G.; Grams, R.E.; Pebdani, F.N. [Mobil Oil Canada, Alberta (Canada)

1995-02-01T23:59:59.000Z

345

Screen and slotted liner horizontal completion: : correcting for wellbore pressure drop in the inflow performance relationships (IPR)  

E-Print Network [OSTI]

SCREEN AND SLOTTED LINER HORIZONTAL COMPLETIONS: CORRECTING FOR WELLBORK PRESSURE DROP IN THE INFLOW PERFORMANCE RELATIONSHIPS (IPR) A Thesis by EDDIE OSARENMWIDA AGBONGIATOR Submitted to the Office of Graduate Studies of Texas ARM University...: Correcting for Wellbore Pressure Drop in the Inflow Performance Relationships (IPR). (December 2002) Eddie Osarenmwida Agbongiator, B. S. , University of Benin Chair of Advisory Committee: Dr. Rosalind A. Archer This thesis presents the development of a...

Agbongiator, Eddie Osarenmwida

2012-06-07T23:59:59.000Z

346

Development of a neural network model for the prediction of liquid holdup in two-phase horizontal flow  

E-Print Network [OSTI]

Edward Shippen, B. S. , Texas A&M University Chair of Advisory Committee: Dr. Stuart Scott Accurate prediction of liquid holdup associated with multiphase flow is a critical element in the design and operation of modern production systems... Intermittent Annular 0 0 0 0 0 0 0 0 0 0 Dispersed bubble Figure 1: Horizontal flow patterns A number of empirical correlations and mechanistic models have been applied to estimate frictional pressure losses associated with multiphase flow in pipes...

Shippen, Mack Edward

2012-06-07T23:59:59.000Z

347

An Analytical Model for Simulating Heavy-Oil Recovery by Cyclic Steam Injection Using Horizontal Wells, SUPRI TR-118  

SciTech Connect (OSTI)

In this investigation, existing analytical models for cyclic steam injection and oil recovery are reviewed and a new model is proposed that is applicable to horizontal wells. A new flow equation is developed for oil production during cyclic steaming of horizontal wells. The model accounts for the gravity-drainage of oil along the steam-oil interface and through the steam zone. Oil viscosity, effective permeability, geometry of the heated zone, porosity, mobile oil saturation, and thermal diffusivity of the reservoir influence the flow rate of oil in the model. The change in reservoir temperature with time is also modeled, and it results in the expected decline in oil production rate during the production cycle as the reservoir cools. Wherever appropriate, correlations and incorporated to minimize data requirements. A limited comparison to numerical simulation results agrees well, indicating that essential physics are successfully captured. Cyclic steaming appears to be a systematic met hod for heating a cold reservoir provided that a relatively uniform distribution of steam is obtained along the horizontal well during injection. A sensitivity analysis shows that the process is robust over the range of expected physical parameters.

Diwan, Utpal; Kovscek, Anthony R.

1999-08-09T23:59:59.000Z

348

Ordovician Red River {open_quotes}B{close_quotes}: Horizontal oil play in the southern Williston basin  

SciTech Connect (OSTI)

Recent application of horizontal drilling technology to the Ordovician Red River {open_quotes}B{close_quotes} zone in the southern Williston basin has resulted in a successful oil play, with more than 100 wells drilled in 1995 and 1996. The Red River {open_quotes}B{close_quotes} reservoir is a dolomitized laminated carbonate with microsucrosic porosity of 8-25% and permeabilities in the range of 1-66 md. It occurs within the middle of three depositional cycles ({open_quotes}A,{close_quotes} {open_quotes}B,{close_quotes} and {open_quotes}C{close_quotes}) that form the upper Red River Formation. Each cycle consists of a lower burrowed limestone, middle laminated member, and capping anhydrite or lime mudstone. The {open_quotes}B{close_quotes} reservoir is confined to the {open_quotes}B{close_quotes} laminated member and consists of an upper portion, characterized by better reservoir quality, and a lower, less permeable portion. Horizontal drilling has the advantage of significantly increasing well-bore exposure to the upper, more permeable portion. Well data indicate the total Red River {open_quotes}B{close_quotes} porosity zone has remarkable extent over parts of southwestern North Dakota, southeastern Montana, and northwestern South Dakota. Productivity from horizontal well displays considerable variation that can be correlated with structure/tectonic patterns and with reservoir petrophysical character.

Montgomery, S.L.

1997-04-01T23:59:59.000Z

349

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

E-Print Network [OSTI]

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

Macrae, Michael X.

2011-01-01T23:59:59.000Z

350

FREE CONVECTIVE LAMINAR FLOW WITHIN THE TROMBE WALL CHANNEL  

E-Print Network [OSTI]

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

Akbari, H.

2011-01-01T23:59:59.000Z

351

Evaluating demand planning strategy in the retail channel  

E-Print Network [OSTI]

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

Zehavi, Limor (Limor Hadas)

2012-01-01T23:59:59.000Z

352

Quantitative description of steam channels after steam flooding  

Science Journals Connector (OSTI)

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

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

2013-05-01T23:59:59.000Z

353

Analysis of global channel costs for the pharmaceutical industry  

E-Print Network [OSTI]

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

Rimling, Eric C. (Eric Christopher)

2009-01-01T23:59:59.000Z

354

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

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

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

355

One-Channel Audio Source Separation of Convolutive Mixture  

Science Journals Connector (OSTI)

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

Jalal Taghia; Jalil Taghia

2008-01-01T23:59:59.000Z

356

Roderick MacKinnon and Ion Channels - Potassium Channels and Sodium  

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

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

357

Dynamical coupled-channels: the key to understanding resonances  

E-Print Network [OSTI]

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

B. Julia-Diaz

2007-12-01T23:59:59.000Z

358

Channeling Radiation from Relativistic Positrons in LiF  

Science Journals Connector (OSTI)

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

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

1982-08-16T23:59:59.000Z

359

Chaperone function of the botulinum neurotoxin protein translocating channel  

E-Print Network [OSTI]

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

Fischer, Audrey

2008-01-01T23:59:59.000Z

360

An Information Theoretic Analysis on Indoor PLC Channel Characterizations  

E-Print Network [OSTI]

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

Gesbert, David

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


361

"Measurement of Cell Movement in Microfluidic Channels" Kevin Okiah  

E-Print Network [OSTI]

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

Mountziaris, T. J.

362

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

E-Print Network [OSTI]

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

Schneider, Thomas D.

363

Microwave Radiometer – 3 Channel (MWR3C) Handbook  

SciTech Connect (OSTI)

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

Cadeddu, MP

2012-05-04T23:59:59.000Z

364

Code design for erasure channels with limited or noisy feedback  

E-Print Network [OSTI]

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

Nagasubramanian, Karthik

2009-05-15T23:59:59.000Z

365

Code design for erasure channels with limited or noisy feedback  

E-Print Network [OSTI]

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

Nagasubramanian, Karthik

2008-10-10T23:59:59.000Z

366

Renewable Energy Scheduling for Fading Channels with Maximum Power Constraint  

E-Print Network [OSTI]

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

Greenberg, Albert

367

Memory Effects in Quantum Channel Discrimination Giulio Chiribella,1  

E-Print Network [OSTI]

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

D'Ariano, Giacomo Mauro

368

Channel Access Client Toolbox for Matlab  

SciTech Connect (OSTI)

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

Terebilo, Andrei

2002-08-07T23:59:59.000Z

369

Heat transfer in a horizontal coiled pipe in a transient regime and at a near-critical pressure of a fluid  

Science Journals Connector (OSTI)

It has been established that in the region of pressures close to a critical one, heat transfer in a transient regime of motion of a single-phase flow in a horizontal coil pipe changes nonuniformly over the cro...

R. F. Kelbaliev; R. Yu. Aliev…

2008-09-01T23:59:59.000Z

370

Cite as: Scott, S.D. & Carpendale, S. (2010). Theory of Tabletop Territoriality. In C. Mller-Tomfelde (ed.), Tabletops -Horizontal Interactive Displays, Springer  

E-Print Network [OSTI]

Cite as: Scott, S.D. & Carpendale, S. (2010). Theory of Tabletop Territoriality. In C. Müller-Tomfelde (ed.), Tabletops - Horizontal Interactive Displays, Springer (HCI Stacey D. Scott and Sheelagh Carpendale Abstract This chapter discusses empirical

DiMarco, Chrysanne

371

Combustion Assisted Gravity Drainage (CAGD): An In-Situ Combustion Method to Recover Heavy Oil and Bitumen from Geologic Formations using a Horizontal Injector/Producer Pair  

E-Print Network [OSTI]

Combustion assisted gravity drainage (CAGD) is an integrated horizontal well air injection process for recovery and upgrading of heavy oil and bitumen from tar sands. Short-distance air injection and direct mobilized oil production are the main...

Rahnema, Hamid

2012-11-21T23:59:59.000Z

372

Assessing Benefits in Vehicle Speed and Lateral Position when Chevrons with Full Retroreflective Sign Posts are Implemented on Rural Horizontal Curves  

E-Print Network [OSTI]

Driving a horizontal roadway curve requires a change in vehicle alignment and a potential reduction in speed. Curves may present a challenging situation during adverse conditions or to inattentive drivers. Chevron signs provide advanced warning...

Re, Jonathan M.

2010-01-16T23:59:59.000Z

373

Horizontal well construction/completion process in a Gulf of Mexico unconsolidated sand: development of baseline correlations for improved drill-in fluid cleanup practices  

E-Print Network [OSTI]

This thesis examines, in detail, the procedures and practices undertaken in the drilling and completion phases of a Gulf of Mexico horizontal well in an unconsolidated sand. In particular, this thesis presents a detailed case history analysis...

Lacewell, Jason Lawrence

2012-06-07T23:59:59.000Z

374

Dartmouth Stellar Evolution Database and the ACS Survey of Galactic Globular Clusters II. Stellar Evolution Tracks, Isochrones, Luminosity Functions, and Synthetic Horizontal-Branch Models  

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

Web tools are also available at the home page (http://stellar.dartmouth.edu/~models/index.html). These tools allow users to create isochrones and convert them to luminosity functions or create synthetic horizontal branch models.

Dotter, A; Chaboyer, B; Jevremovic, D; Kostov, V; Baron, E; Ferguson, J; Sarajedini, A; Anderson, J

375

Multiple thresholds in a model system of noisy ion channels  

Science Journals Connector (OSTI)

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

Michael J. Barber and Manfred L. Ristig

2006-10-19T23:59:59.000Z

376

Energy conversion device with support member having pore channels  

DOE Patents [OSTI]

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

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

2014-01-07T23:59:59.000Z

377

Relativistic laser channeling in plasmas for fast ignition  

Science Journals Connector (OSTI)

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

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

2007-12-18T23:59:59.000Z

378

NSAIDs acutely inhibit TRPC channels in freshly isolated rat glomeruli  

SciTech Connect (OSTI)

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

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

2011-05-06T23:59:59.000Z

379

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

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

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

380

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

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

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

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


381

Bachaquero-01 reservoir, Venezuela-increasing oil production by switching from cyclic steam injection to steamflooding using horizontal wells  

E-Print Network [OSTI]

, existing and two new vertical producers): schematic diagrams showing grid dimensions, well locations and completion intervals. . . . . 106 XVI F1GURE Page 5. 20 Area LL3343, Case 4 (cyclic steaming ? horizontal well producer, existing and two new... and contains an OOIP of 7. 037 BSTB. The oil has an oil gravity of 11. 7 degrees API with a viscosity of 635 cp at initial reservoir conditions of 1, 360 psia and 128'F. Currently the reservoir produces 36 MSTB/D oil. Structurally, the reservoir is a simple...

Rodriguez, Manuel Gregorio

2012-06-07T23:59:59.000Z

382

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network [OSTI]

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the direction of the gravitation force in the horizontal iodine air filter are orthogonal, hence the effective accumulation of the small dispersive coal dust particles takes place at the bottom of absorber in the horizontal iodine air filter. It is found that the air dust aerosol stream flow in the horizontal iodine air filter is not limited by the appearing structures, made of the precipitated small dispersive coal dust particles, in distinction from the vertical iodine air filter, in the process of long term operation of the iodine air filters at the nuclear power plant.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2013-06-11T23:59:59.000Z

383

The Cane Creek clastic interval of the Pennsylvanian Paradox formation - an exciting new horizontal target; Part I: Regional Geology  

SciTech Connect (OSTI)

The Cane Creek is a fractured, abnormally pressured, self-sourcing reservoir, making it a good candidate for exploitation through horizontal technology. This concept was successfully applied to the Cane Creek in 1991 when Columbia Gas Development and Exxon Company USA, on an Enserch farmout, completed the Kane Springs Federal 27-1 for 914 BOPD. Since that time, two additional horizontal discoveries have potentialed for 1158 and 1325 BOPD, respectively. The Cane Creek was deposited in a partly restricted evaporitic environment in the Paradox basin during the Pennsylvanian. The Cane Creek consists of fifth-order shoaling-upward cycles within the transgressive to early highstand systems tracts. The reservoir comprises 20-30 ft of organic-rich, dolomitic siltstone and shale directly overlain and underlain by interbedded anhydrite, shale, and siltstone. In most areas, the Cane Creek is sealed above and below by halite, which maintains the abnormal pressure in the reservoir. Core information and reservoir engineering data indicate the Cane Creek produces from fracture porosity with minor contribution from the matrix. Initial fracture development may have occurred as a result of movement along basement-involved faults during the Pennsylvanian, followed by or coincident with salt mobilization from Pennsylvania-Jurassic. Hydrocarbon generation and overpressuring during maximum burial in the Late Cretaceous-early Tertiary created additional fractures or enhanced existing ones. The dominant fracture orientation is northeast-southwest to north-south, which is consistent with the regional stress regime during Late Cretaceous-early Tertiary.

Rawlins, D.M. (Exxon Company USA, Midland, TX (United States))

1993-08-01T23:59:59.000Z

384

Two-phase pressure transient analysis for multi-stage fractured horizontal well in shale gas reservoirs  

Science Journals Connector (OSTI)

Abstract Most researches on shale gas production and pressure transient analysis placed more emphasis on single-phase flow, the two-phase flow caused by flowback after hydrofracture in shale gas reservoirs does not attract much attention. This paper presents a two-phase pressure transient analysis model of multi-stage fractured horizontal well with the consideration of wellbore storage, skin effect, two-phase saturation, hydraulic fractures parameters and desorption characteristics of shale gas reservoirs. Accurate solution to this flow model is obtained by the use of source function theory, Laplace transform, three-dimensional eigenvalue method and orthogonal transformation. Pseudo-pressure and pseudo-pressure derivative type curve is plotted by using the Stehfest algorithm. Seven different flow regimes have been identified and the effects of influence factors such as initial saturation, skin factor, absorption index, fracture stages, horizontal well lateral length and wellbore storage coefficient have also been discussed. The presents research could be used to interpret the pressure behavior more accurately and effectively of shale gas reservoirs.

Weiyang Xie; Xiaoping Li; Liehui Zhang; Junchao Wang; Lina Cao; Lin Yuan

2014-01-01T23:59:59.000Z

385

Magnets for Muon 6D Cooling Channels  

SciTech Connect (OSTI)

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

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

2014-09-10T23:59:59.000Z

386

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

SciTech Connect (OSTI)

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

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

1980-06-01T23:59:59.000Z

387

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

E-Print Network [OSTI]

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

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

2005-10-12T23:59:59.000Z

388

Electric-field-driven polymer entry into asymmetric nanoscale channels  

E-Print Network [OSTI]

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

Narges Nikoofard; Hossein Fazli

2012-02-25T23:59:59.000Z

389

Communication channel of fermionic system in accelerated frame  

E-Print Network [OSTI]

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

Jinho Chang; Younghun Kwon

2012-06-28T23:59:59.000Z

390

Steady-state estuarine modeling of the Brownsville ship channel  

E-Print Network [OSTI]

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

Maldonado, Roberto Jaime

2012-06-07T23:59:59.000Z

391

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

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

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

392

Massively parallel processor networks with optical express channels  

DOE Patents [OSTI]

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

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

1999-01-01T23:59:59.000Z

393

Finding out how particles move through nanoparticle channels...  

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

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

394

Design and analysis of iteratively decodable codes for ISI channels  

E-Print Network [OSTI]

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

Doan, Dung Ngoc

2005-11-01T23:59:59.000Z

395

Emission spectrum of the atomic chain excited by channeled particle  

E-Print Network [OSTI]

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

Epp, V

2014-01-01T23:59:59.000Z

396

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR - EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

Work associated with Budget Period 1 of the East Binger (Marchand) Unit project is nearing completion. A major aspect of this project is accurate modeling of the performance of horizontal wells. Well EBU 37-3H, the first horizontal well drilled in the unit, was drilled in the second quarter of 2001. After much difficulty establishing economic production from the well, the well was hydraulically fractured in November 2001. Post-treatment production has been very encouraging and is significantly better than a vertical well drilled in a similar setting. International Reservoir Technologies, Inc. has completed the final history match of the pilot area reservoir simulation model, including tuning to the performance of the horizontal well. The model's predicted reservoir pressure gradient between injection and production wells accurately matches observed data from the field, a significant improvement from prior model predictions. The model's predicted gas injection profiles now also more accurately match field data. Work has begun toward evaluating the optimum development scenario with the pilot model. Initially, four scenarios will be evaluated--two involving all horizontal infill wells, one involving all vertical infill wells, and one involving a combination of vertical and horizontal infill wells. The model cases for these scenarios have been defined, and construction of them is underway.

Joe Sinner

2002-01-16T23:59:59.000Z

397

BEAM MEASUREMENT SYSTEM OF VEPP-2000 INJECTION CHANNELS*  

E-Print Network [OSTI]

. Kozak, I. Ostanin, V. Repkov, Budker Institute of Nuclear Physics, Lavrentev av. 11, 630090, Novosibirsk to the collider by the one-turn method in horizontal plane to the straight section with zero dispersion function (top) and dispersion functions (bottom) are shown. On the right insets beam parameters and the wire

Kozak, Victor R.

398

Power module assemblies with staggered coolant channels  

DOE Patents [OSTI]

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

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

2013-07-16T23:59:59.000Z

399

Structural organization of gap junction channels  

Science Journals Connector (OSTI)

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

Gina E. Sosinsky; Bruce J. Nicholson

2005-01-01T23:59:59.000Z

400

Mathematical Modeling on Open Limestone Channel  

E-Print Network [OSTI]

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

Bandstra, Joel; Wu, Naiyi

2014-01-01T23:59:59.000Z

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


401

Theory of the ion-channel laser  

SciTech Connect (OSTI)

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

Whittum, D.H.

1990-09-01T23:59:59.000Z

402

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR - EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

Progress on the East Binger Unit (EBU) project has slowed as difficulties have been encountered with obtaining satisfactory production from well EBU 37G-3H, the new horizontal well. Remedial operations have been conducted and stimulation operations were about to get under way at the end of the reporting period. International Reservoir Technologies, Inc. has made additional progress on the pilot area simulation model, reaching a point with the history match that we are awaiting more definitive production data from the horizontal well. Planning future development of the EBU hinges on evaluating the results of well EBU 37G-3H. Performance of this well must be understood in order to evaluate development scenarios involving horizontal wells and compare them with development scenarios involving vertical wells.

Joe Sinner

2001-10-26T23:59:59.000Z

403

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

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

Development and Verification of Development and Verification of a Computational Fluid Dynamics Model of a Horizontal-Axis Tidal Current Turbine M.J. Lawson and Y. Li. National Renewable Energy Laboratory D.C. Sale University of Washington Presented at the 30 th International Conference on Ocean, Offshore, and Arctic Engineering Rotterdam, The Netherlands June 19-24, 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Conference Paper NREL/CP-5000-50981 October 2011 Contract No. DE-AC36-08GO28308 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US

404

Design of a horizontal test cryostat for superconducting RF cavities for the FREIA facility at Uppsala University  

SciTech Connect (OSTI)

Uppsala University is constructing a large scale facility, called FREIA (Facility for Research Instrumentation and Accelerator Development). FREIA includes a helium liquefier and an accelerator test facility and has the capacity to test superconducting radio-frequency (RF) cavities with the same RF system and RF power level as in an accelerator. A central element of FREIA is a horizontal test cryostat connected in closed loop to a helium liquefier. This cryostat can house two fully equipped (tuners, piezo, power coupler, helium tank) superconducting cavities to perform full RF high power tests and operate at temperatures between 1.8 K and 4.2 K. The cryostat is designed to accommodate a large array of superconducting cavities and magnets, among which the European Spallation Source (ESS) type spoke and high-? elliptical cavities as well as TESLA/ILC type elliptical cavities. The present status of the project and the design of the cryostat are reported.

Chevalier, N. R.; Thermeau, J.-P.; Bujard, P.; Junquera, T. [Accelerators and Cryogenic Systems (ACS), 86 rue de Paris, 91400 Orsay (France); Hermansson, L.; Kern, R. Santiago; Ruber, R. [Uppsala University, Department of Physics and Astronomy, 75120 Uppsala (Sweden)

2014-01-29T23:59:59.000Z

405

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

SciTech Connect (OSTI)

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.

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

2011-10-01T23:59:59.000Z

406

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

SciTech Connect (OSTI)

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

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

1997-12-01T23:59:59.000Z

407

Well testing model for multi-fractured horizontal well for shale gas reservoirs with consideration of dual diffusion in matrix  

Science Journals Connector (OSTI)

Abstract Shale gas reservoir is typical unconventional reservoir, it's necessary to take advantage of multi-stage fractured horizontal well so as to develop those kinds of reservoirs, which can form high conductivity hydraulic fractures and activate natural fractures. Due to the existence of concentration gap between matrix and fractures, desorption gas can simultaneously diffuse into the natural fractures and hydraulic fractures. This process can be called dual diffusion. Based on the triple-porosity cubic model, this paper establishes a new well testing model of multi-stage fractured horizontal well in shale gas reservoir with consideration of the unique mechanisms of desorption and dual diffusion in matrix. Laplace transformation is employed to solve this new model. The pseudo pressure transient responses are inverted into real time space with stehfest numerical inversion algorithm. Type curves are plotted, and different flow regimes in shale gas reservoirs are identified and the effects of relevant parameters are analyzed as well. Considering the mechanism of dual diffusion in matrix, the flow can be divided into five regimes: early linear flow; pseudo-steady state inter-porosity flow; the diffusion from matrix into micro-fractures; the diffusion from matrix into hydraulic fractures and boundary-dominated flow. There are large distinctions of pressure response between pseudo steady state diffusion and unsteady state diffusion under different value of pore volume ratio. It's similar to the feature of pseudo-steady state inter-porosity flow, diffusion coefficient and Langmuir parameters reflect the characters of pseudo-steady state diffusion. The numbers of stage of hydraulic fractures have certain impact on the shape factor of matrix and the inter-porosity coefficient. This new model is validated compared with some existing models. Finally, coupled with an application, this mew model can be approximately reliable and make some more precise productivity prediction.

Leng Tian; Cong Xiao; Mingjin Liu; Daihong Gu; Guangyu Song; Helong Cao; Xianglong Li

2014-01-01T23:59:59.000Z

408

Ultra High Energy Cosmic Rays, Z-Shower and Neutrino Astronomy by Horizontal-Upward Tau Air-Showers  

E-Print Network [OSTI]

Ultra High Cosmic Rays (UHECR) Astronomy may be correlated to a primary parental Neutrino Astronomy: indeed any far BL Lac Jet or GRB, sources of UHECR, located at cosmic edges, may send its signal, overcoming the severe GZK cut-off, by help of UHE ZeV energetic neutrino primary. These UHE neutrino scattering on relic light ones (spread on wide Hot Local Groups Halos) maybe fine-tuned : E_(nu) =(M_Z)^2/m_(nu) = 4 10^(22) eV *((0.1eV)/m_(nu)), to combine at once the observed light neutrino masses and the UHECR spectra, leading to a relativistic Z-Shower in Hot Dark Halos (e few tens Mpc wide) whose final nuclear component traces the UHECR event on Earth. Therefore UHECR (with no longer volme GZK constrains) may point to far BL Lac sources. This Z-Burst (Z-Shower) model calls for large neutrino fluxes. Even if Nature do not follow the present Z-model, UHECR while being cut-off by Big Bang Radiation, must produce a minimal UHE neutrino flux, the GZK neutrino secondaries. For both reasons such UHE Neutrino Astronomy must be tested on Earth. Lowest High Energy Astronomy is searched by AMANDA, ANTARES underground deterctors by muons tracks. We suggest a complementary higher energy Neutrino Tau Astronomy inducing Horizontal and Upward Tau AirShowers. Possible early evidence of such a New Neutrino UPTAUs (Upward Tau Showers at PeVs energies) Astronomy may be in BATSE records of Upward Terrestrial Gamma Flashes. Future signals must be found in detectors as EUSO, seeking Upward-Horizontal events: indeed even minimal, guaranteed, GZK neutrino fluxes may be better observed if EUSO threshold reaches 10^(19) eV by enlarging its telescope size.

D. Fargion

2003-06-24T23:59:59.000Z

409

Fran Ridge horizontal coring summary report hole UE-25h No. 1, Yucca Mountain Area, Nye County, Nevada  

SciTech Connect (OSTI)

Hole UE-25h No. 1 was core drilled during December 1982 and January 1983 within several degrees of due west, 400 ft horizontally into the southeast slope of Fran Ridge at an altitude of 3409 ft. The purpose of the hole was to obtain data pertinent for radionuclide transport studies in the Topopah Spring Member of the Paintbrush Tuff. This unit had been selected previously as the host rock for the potential underground nuclear waste repository at Yucca Mountain, adjacent to the southwestern part of the Nevada Test Site. The hole was core drilled first with air, then with air mist, and finally with air, soap, and water. Many problems were encountered, including sloughing of tuff into the uncased hole, vibration of the drill rods, high rates of bit wear, and lost circulation of drilling fluids. On the basis of experience gained in drilling this hole, ways to improve horizontal coring with air are suggested in this report. All of the recovered core, except those pieces that were wrapped and waxed, were examined for lithophysal content, for fractures, and for fracture-fill mineralization. The results of this examination are given in this report. Core recovery greater than 80% at between 209 and 388 ft permitted a fracture frequency analysis. The results are similar to the fracture frequencies observed in densely welded nonlithophysal tuff from holes USW GU-3 and USW G-4. The fractures in core from UE-25h No. 1 were found to be smooth and nonmineralized or coated with calcite, silica, or manganese oxide. Open fractures with caliche (porous, nonsparry calcite) were not observed beyond 83.5 ft, which corresponds to an overburden depth of 30 ft.

Norris, A.E.; Byers, F.M. Jr.; Merson, T.J.

1986-10-01T23:59:59.000Z

410

Robust concatenated codes for the slow Rayleigh fading channel  

E-Print Network [OSTI]

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

Hsu, Teh-Hsuan

2009-05-15T23:59:59.000Z

411

Viscous attenuation of a detonation wave propagating in a channel  

E-Print Network [OSTI]

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

Texas at Arlington, University of

412

Coded Adaptive Linear Precoded Discrete Multitone Over PLC Channel  

E-Print Network [OSTI]

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

Boyer, Edmond

413

Columbia River Channel Improvement Project Rock Removal Blasting: Monitoring Plan  

SciTech Connect (OSTI)

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

Carlson, Thomas J.; Johnson, Gary E.

2010-01-29T23:59:59.000Z

414

Some characterizations of quantum channel in infinite Hilbert spaces  

SciTech Connect (OSTI)

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

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

2014-05-15T23:59:59.000Z

415

Wood in rivers: interactions with channel morphology and processes  

E-Print Network [OSTI]

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

Montgomery, David R.

416

Addendum to "Proof Rules for Flush Channels" Scott Stoller  

E-Print Network [OSTI]

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

Stoller, Scott

417

Outage Capacity and Code Design for Dying Channels  

E-Print Network [OSTI]

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

Zeng, Meng

2012-10-19T23:59:59.000Z

418

Ion Transport Through Cell Membrane Channels Jan Gomulkiewicz1  

E-Print Network [OSTI]

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

Miekisz, Jacek

419

Brazos Island Harbor, Texas Channel Improvement Project 25 June 2014  

E-Print Network [OSTI]

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

US Army Corps of Engineers

420

Cooperative Advertising in a Distribution Channel with Fairness Concerns  

E-Print Network [OSTI]

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

Xie, Jinxing

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


421

Secular Sediment Waves, Channel Bed Waves, and Legacy Sediment  

E-Print Network [OSTI]

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

James, L. Allan

422

Multicriteria Choice of the NVG Optoelectronic Channel Elements Daniela Borissova  

E-Print Network [OSTI]

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

Borissova, Daniela

423

Plasma Channel Diagnostic Based on Laser Centroid Oscillations  

E-Print Network [OSTI]

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

Geddes, Cameron Guy Robinson

424

On Mitigating Covert Channels in RFID-Enabled Supply Chains  

E-Print Network [OSTI]

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

Robins, Gabriel

425

Channel assignment using block design in wireless mesh networks  

Science Journals Connector (OSTI)

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

Hejiao Huang; Xiaolu Cao; Xiaohua Jia; Xiaolong Wang

2009-05-01T23:59:59.000Z

426

Control power in perfect controlled teleportation via partially entangled channels  

E-Print Network [OSTI]

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

Xi-Han Li; Shohini Ghose

2014-10-05T23:59:59.000Z

427

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

E-Print Network [OSTI]

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

Erkip, Elza

428

Technology summary of the in situ bioremediation demonstration (methane biostimulation) via horizontal wells at the Savannah River Site Integrated Demonstration Project  

SciTech Connect (OSTI)

The US Department of Energy, Office of Technology Development, has been sponsoring full-scale environmental restoration technology demonstrations for the past 4 years. The Savannah River Site Integrated Demonstration focuses on ``Clean-up of Soils ad Groundwater Contaminated with Chlorinated VOCs.`` Several laboratories including our own had demonstrated the ability of methanotrophic bacteria to completely degrade or mineralize chlorinated solvents, and these bacteria were naturally found in soil and aquifer material. Thus the test consisted of injection of methane mixed with air into the contaminated aquifer via a horizontal well and extraction from the vadose zone via a parallel horizontal well.

Hazen, T.C.; Looney, B.B.; Fliermans, C.B.; Eddy-Dilek, C.A. [Westinghouse Savannah River Co., Aiken, SC (United States); Lombard, K.H. [Bechtel Savannah River, Inc., Aiken, SC (United States); Enzien, M.V. [Argonne National Lab., IL (United States); Dougherty, J.M. [US Environmental Protection Agency, Irving, TX (United States); Wear, J. [Catawba State Coll., Salisbury, NC (United States)

1994-06-01T23:59:59.000Z

429

Petascale Direct Numerical Simulations of Turbulent Channel Flow  

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

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

430

Positron Beam Propagation in a Meter Long Plasma Channel  

SciTech Connect (OSTI)

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

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

2008-03-17T23:59:59.000Z

431

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

E-Print Network [OSTI]

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

Kandlikar, Satish

432

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

433

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

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

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

434

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

Science Journals Connector (OSTI)

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

Vikram Krishnamurthy; Bruce Cornell

2012-02-01T23:59:59.000Z

435

The Bulk Channel in Thermal Gauge Theories  

E-Print Network [OSTI]

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

Harvey B. Meyer

2010-02-17T23:59:59.000Z

436

Statistical Hot Channel Analysis for the NBSR  

SciTech Connect (OSTI)

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

Cuadra A.; Baek J.

2014-05-27T23:59:59.000Z

437

Muon Beam Helical Cooling Channel Design  

SciTech Connect (OSTI)

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

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

2013-06-01T23:59:59.000Z

438

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

E-Print Network [OSTI]

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

Dabiri, John O.

439

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network [OSTI]

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the directi...

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2013-01-01T23:59:59.000Z

440

Laboratory tests to evaluate and study formation damage with low-density drill-in fluids (LDDIF) for horizontal well completions in low pressure and depleted reservoirs  

E-Print Network [OSTI]

The increasing number of open hole horizontal well completions in low-pressure and depleted reservoirs requires the use of non-damaging low-density drill-in fluids (LDDIF) to avoid formation damage and realize optimum well productivity. To address...

Chen, Guoqiang

2012-06-07T23:59:59.000Z

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


441

An Experimental Investigation of the Static and Dynamic Performance of Horizontal-Application and Vertical-Application Three-Lobe Bearings  

E-Print Network [OSTI]

Static and dynamic performance test results are provided for a horizontal-application three-lobe bearing evaluated over the following range of static-load orientations (all taken from the leading edge of the loaded pad): 0°, 20°, 30°, 40°, 60°, 80...

Khatri, Rasish

2014-08-07T23:59:59.000Z

442

The optimal unitary dilation for bosonic Gaussian channels  

E-Print Network [OSTI]

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

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

2010-01-01T23:59:59.000Z

443

Base norms and discrimination of generalized quantum channels  

SciTech Connect (OSTI)

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

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

2014-02-15T23:59:59.000Z

444

Cooperative advertising in a dual channel supply chain  

Science Journals Connector (OSTI)

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

Ruiliang Yan; Sanjoy Ghose; Amit Bhatnagar

2006-01-01T23:59:59.000Z

445

Tapered Six-Dimensional Cooling Channel for a Muon Collider  

SciTech Connect (OSTI)

A high-luminosity muon collider requires a reduction of the six-dimensional emittance of the captured muon beam by a factor of {approx} 10{sup 6}. Most of this cooling takes place in a dispersive channel that simultaneously reduces all six phase space dimensions. We describe a tapered 6D cooling channel that should meet the requirements of a muon collider. The parameters of the channel are given and preliminary simulations are shown of the expected performance. A complete scheme for cooling a muon beam sufficiently for use in a muon collider has been previously described. This scheme uses separate 6D ionization cooling channels for the two signs of the particle charge. In each, a channel first reduces the emittance of a train of muon bunches until they can be injected into a bunch-merging system. The single muon bunches, one of each sign, are then sent through a second tapered 6D cooling channel where the transverse emittance is reduced as much as possible and the longitudinal emittance is cooled to a value below that needed for the collider. The beam can then be recombined and sent through a final cooling channel using high-field solenoids that cools the transverse emittance to the required values for the collider while allowing the longitudinal emittance to grow. This paper mainly describes the design of the 6D cooling channel before bunch merging. Cooling efficiency is conveniently measured using a parameter Q, which is defined as the rate of change of 6D emittance divided by the rate of change of the number of muons in the beam. In a given lattice Q starts off small due to losses from initial matching, then rises to a large value (Q {approx} 15 is typical for the channels discussed here), and finally falls as the emittance of the beam approaches its equilibrium value. The idea for the 6D cooling channel described here originated with the RFOFO cooling ring. This design evolved into a helical channel referred to as a 'Guggenheim' in order to avoid serious problems with injection of large emittance beams. We found that good cooling efficiency requires that the channel be tapered. In that case when Q starts to fall off the lattice is modified to reduce the beta function. This ensures that the beam emittance is always large compared with the equilibrium emittance.

Palmer, R.B.; Fernow, R.C.

2011-03-28T23:59:59.000Z

446

Elimination of information leakage in quantum information channels  

E-Print Network [OSTI]

In all lossy communication channels realized to date, information is inevitably leaked to a potential eavesdropper. Here we present a communication protocol that does not allow for any information leakage to a potential eavesdropper. By encoding information into a restricted Gaussian alphabet of squeezed states we show, both theoretically and experimentally, that the Holevo information between the eavesdropper and the intended recipient can be exactly zero in a purely lossy channel while minimized in a noisy channel with a finite number of samples. This result is of fundamental interest but might also have practical implications in extending the distance of secure quantum key distribution.

Christian S. Jacobsen; Lars S. Madsen; Vladyslav C. Usenko; Radim Filip; Ulrik L. Andersen

2014-08-20T23:59:59.000Z

447

Turbine component cooling channel mesh with intersection chambers  

DOE Patents [OSTI]

A mesh (35) of cooling channels (35A, 35B) with an array of cooling channel intersections (42) in a wall (21, 22) of a turbine component. A mixing chamber (42A-C) at each intersection is wider (W1, W2)) than a width (W) of each of the cooling channels connected to the mixing chamber. The mixing chamber promotes swirl, and slows the coolant for more efficient and uniform cooling. A series of cooling meshes (M1, M2) may be separated by mixing manifolds (44), which may have film cooling holes (46) and/or coolant refresher holes (48).

Lee, Ching-Pang; Marra, John J

2014-05-06T23:59:59.000Z

448

Measuring mobile banking customers' channel attribute preferences in service consumption  

Science Journals Connector (OSTI)

The purpose of the paper was to measure mobile banking customers' channel attribute preferences in two different banking services, namely request for account balance service and bill paying. An Internet survey was implemented and conjoint analysis was used. In addition, the respondents were clustered into homogenous segments on the basis of their channel attribute preferences. The findings indicate slight differences between the services in respondents' channel attribute preferences while individual respondents' preferences vary widely. The results provide important information for service providers' marketing campaigns and communication activities and device manufacturers' aims to develop different kinds of devices for different market segments.

Tommi Laukkanen

2007-01-01T23:59:59.000Z

449

E-Print Network 3.0 - arbitrary traffic channels Sample Search...  

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

Computer Technologies and Information Sciences 28 Model-Based Covert Timing Channels: Automated Modeling and Evasion Summary: . Keywords: covert timing channels, traffic...

450

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

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

andrecovery. Recently, ATP-dependent potassium channels havebeen identified by direct patch... and Partial Purification of the Glibenclamide-sensitive, ATP-dependent K' Channel...

451

Two-Dimensional Computational Fluid Dynamics and Conduction Simulations of Heat Transfer in Horizontal Window Frames with Internal Cavities  

SciTech Connect (OSTI)

This paper assesses the accuracy of the simplified frame cavity conduction/convection and radiation models presented in ISO 15099 and used in software for rating and labeling window products. Temperatures and U-factors for typical horizontal window frames with internal cavities are compared; results from Computational Fluid Dynamics (CFD) simulations with detailed radiation modeling are used as a reference. Four different frames were studied. Two were made of polyvinyl chloride (PVC) and two of aluminum. For each frame, six different simulations were performed, two with a CFD code and four with a building-component thermal-simulation tool using the Finite Element Method (FEM). This FEM tool addresses convection using correlations from ISO 15099; it addressed radiation with either correlations from ISO 15099 or with a detailed, view-factor-based radiation model. Calculations were performed using the CFD code with and without fluid flow in the window frame cavities; the calculations without fluid flow were performed to verify that the CFD code and the building-component thermal-simulation tool produced consistent results. With the FEM-code, the practice of subdividing small frame cavities was examined, in some cases not subdividing, in some cases subdividing cavities with interconnections smaller than five millimeters (mm) (ISO 15099) and in some cases subdividing cavities with interconnections smaller than seven mm (a breakpoint that has been suggested in other studies). For the various frames, the calculated U-factors were found to be quite comparable (the maximum difference between the reference CFD simulation and the other simulations was found to be 13.2 percent). A maximum difference of 8.5 percent was found between the CFD simulation and the FEM simulation using ISO 15099 procedures. The ISO 15099 correlation works best for frames with high U-factors. For more efficient frames, the relative differences among various simulations are larger. Temperature was also compared, at selected locations on the frames. Small differences was found in the results from model to model. Finally, the effectiveness of the ISO cavity radiation algorithms was examined by comparing results from these algorithms to detailed radiation calculations (from both programs). Our results suggest that improvements in cavity heat transfer calculations can be obtained by using detailed radiation modeling (i.e. view-factor or ray-tracing models), and that incorporation of these strategies may be more important for improving the accuracy of results than the use of CFD modeling for horizontal cavities.

Gustavsen, Arlid; Kohler, Christian; Dalehaug, Arvid; Arasteh, Dariush

2008-12-01T23:59:59.000Z

452

Gasliquid two-phase flow patterns in a miniature square channel with a gas permeable sidewall  

E-Print Network [OSTI]

methanol fuel cells. Flow patterns in both vertical upward and horizontal flows were identified using in vertical downward flows; and Kosterin [5] and Brigham et al. [6] discussed flow patterns in inclined-phase flow of air�water mixtures in horizontal pipes, the flow patterns and flow regime maps for five glass

Zhao, Tianshou

453

Property:Number of channels | Open Energy Information  

Open Energy Info (EERE)

channels channels Jump to: navigation, search Property Name Number of channels Property Type String Pages using the property "Number of channels" Showing 25 pages using this property. (previous 25) (next 25) A Alden Large Flume + Designed as needed + Alden Small Flume + Designed as needed + Alden Tow Tank + Designed as needed + Alden Wave Basin + Designed as needed + C Chase Tow Tank + 8 + Conte Large Flume + 12 + Conte Small Flume + 12 + D Davidson Laboratory Tow Tank + 16 + DeFrees Flume 1 + 64+ + DeFrees Flume 2 + 64+ + DeFrees Flume 3 + 64+ + DeFrees Flume 4 + 64+ + DeFrees Large Wave Basin + 64+ + DeFrees Small Wave Basin + 64+ + H Haynes Tow Tank + 40 + Haynes Wave Basin + 40 + Hinsdale Wave Basin 1 + Up to 192 + Hinsdale Wave Basin 2 + Up to 192 +

454

Property:Channel/Tunnel/Flume | Open Energy Information  

Open Energy Info (EERE)

Channel/Tunnel/Flume Channel/Tunnel/Flume Jump to: navigation, search Property Name Channel/Tunnel/Flume Property Type String Pages using the property "Channel/Tunnel/Flume" Showing 25 pages using this property. (previous 25) (next 25) 1 1.5-ft Wave Flume Facility + Yes + 10-ft Wave Flume Facility + Yes + 11-ft Wave Flume Facility + None + 2 2-ft Flume Facility + Yes + 3 3-ft Wave Flume Facility + None + 5 5-ft Wave Flume Facility + Yes + 6 6-ft Wave Flume Facility + Yes + A Alden Large Flume + Yes + Alden Small Flume + Yes + Alden Tow Tank + None + Alden Wave Basin + None + B Breakwater Research Facility + None + Bucknell Hydraulic Flume + Yes + C Carderock 2-ft Variable Pressure Cavitation Water Tunnel + Yes + Carderock 3-ft Variable Pressure Cavitation Water Tunnel + Yes +

455

Methods of Using Alpha Channeling Together with Transformer Recharging |  

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

Methods of Using Alpha Channeling Together with Transformer Recharging Methods of Using Alpha Channeling Together with Transformer Recharging A tokamak current can be sustained using rf waves for transformer recharging at low density and high-Z with high efficiency if the resistivity is kept high enough during the radio frequency recharging stage. At the same time, operation in the hot ion mode via alpha channeling increases the effective fusion reactivity. The two separate inventions can be made to work synergistically. Specifically, by operating the tokamak in a low-density recharge phase, the lower hybrid wave penetrates the plasma more effectively. High reactivity is obtained by operation in the hot ion mode through the alpha channeling technique. Then, by using a high temperature relaxation stage, not only is the plasma current sustained

456

Free online training and HUD videos on DVU Learning Channel!  

Broader source: Energy.gov [DOE]

SlideRule and Government Learning Videos (offered by HUD) are now available on the DVU Learning Channel.  SlideRule offers free college-level courses from universities around the world available...

457

Heat transfer in channel flow of a micropolar fluid  

Science Journals Connector (OSTI)

The study of heat transfer in channel flow has been done by previous authors for Newtonian and elastico-viscous fluids. It is the aim of the present ... the temperature profile for flow of a micropolar fluid in a...

Renuka Rajagopalan; K. S. Bhatnagar

1969-10-01T23:59:59.000Z

458

Selective activation of mechanosensitive ion channels using magnetic particles  

Science Journals Connector (OSTI)

...Keele University School of Medicine, Thornburrow Drive, Hartshill...Science and Technology in Medicine, Keele University School...channel|TREK-1|targeting|nanotechnology| 1. Introduction TREK-1...Science and Technology in Medicine, Keele University School...

2008-01-01T23:59:59.000Z

459

MIMO capacity convergence in frequency-selective channels  

E-Print Network [OSTI]

The dependence of multi-antenna capacity on bandwidth is characterized empirically for narrowband, wideband and ultrawideband indoor channels using spatial and polar arrays. It is shown that both the mean and the outage ...

Malik, Wasim Q.

460

Membrane Ion Channels and Ionic Hydration Energies [Abstract Only  

Science Journals Connector (OSTI)

25 November 1980 research-article Membrane Ion Channels and Ionic Hydration Energies [Abstract Only] D. T. Edmonds The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings...

1980-01-01T23:59:59.000Z

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


461

Coincidence landscapes for three-channel linear optical networks  

Science Journals Connector (OSTI)

We use permutation-group methods plus SU(3) group-theoretic methods to determine the action of a three-channel passive optical interferometer on controllably delayed single-photon pulse inputs to each channel. Permutation-group techniques allow us to relate directly expressions for rates and, in particular, investigate symmetries in the coincidence landscape. These techniques extend the traditional Hong-Ou-Mandel effect analysis for two-channel interferometry to valleys and plateaus in three-channel interferometry. Our group-theoretic approach is intuitively appealing because the calculus of Wigner D functions partially accounts for permutational symmetries and directly reveals the connections among D functions, partial distinguishability, and immanants.

Hubert de Guise; Si-Hui Tan; Isaac P. Poulin; Barry C. Sanders

2014-06-23T23:59:59.000Z

462

Baroclinic Instability of the Faroe Bank Channel Overflow  

Science Journals Connector (OSTI)

The generation mechanism of mesoscale eddies in the Faroe Bank Channel (FBC) overflow region and their spatiotemporal characteristics are examined using the high-resolution regional Massachusetts Institute of Technology general circulation model (...

Chuncheng Guo; Mehmet Ilicak; Ilker Fer; Elin Darelius; Mats Bentsen

2014-10-01T23:59:59.000Z

463

Channel erosion due to subsurface flow Braunen Smith,1  

E-Print Network [OSTI]

Channel erosion due to subsurface flow Braunen Smith,1 Arshad Kudrolli,1 Alexander E. Lobkovsky,2, and D. H. Rothman, J. Fluid Mech. 503, 357 2004 . 2 A. E. Lobkovsky, B. Smith, A. Kudrolli, D. C. Mohrig

Kudrolli, Arshad

464

Queueing Behavior over a Gilbert-Elliott Packet Erasure Channel  

E-Print Network [OSTI]

. Exploiting this mathematical structure, the probability of the queue exceeding a certain threshold can be obtained. Most previous contributions in this area treat code-rate selection, channel erasure probability and network congestion separately...

Cai, Yi

2012-02-14T23:59:59.000Z

465

Bank Customers' Channel Preferences for Requesting Account Balances  

Science Journals Connector (OSTI)

Electronic applications in banking have enhanced customers' ability to control the balances and latest transactions of their bank accounts. Many banks today offer this service also via mobile channel further improving customers' capability to use the ...

Tommi Laukkanen

2007-01-01T23:59:59.000Z

466

Multiple-user quantum information theory for optical communication channels  

E-Print Network [OSTI]

Research in the past decade has established capacity theorems for point-to-point bosonic channels with additive thermal noise, under the presumption of a conjecture on the minimum output von Neumann entropy. In the first ...

Guha, Saikat, 1980-

2008-01-01T23:59:59.000Z

467

Optimal Channel Probing and Transmission Scheduling for Opportunistic Spectrum Access  

E-Print Network [OSTI]

In this study, we consider optimal opportunistic spectrum access (OSA) policies for a transmitter in a multichannel wireless system, where a channel can be in one of multiple states. In such systems, the transmitter typically ...

Chang, Nicholas B.

468

Initial steps in the opening of a Shaker potassium channel  

Science Journals Connector (OSTI)

...thus moving 16 elementary charges (e0 ) per channel across the electric field. This estimate is...through the membrane electric field...omega} initial resistance when filled with...iii) series resistance compensation...

Toshinori Hoshi; Clay M. Armstrong

2012-01-01T23:59:59.000Z

469

Vortex development behind a finite porous obstruction in a channel  

E-Print Network [OSTI]

This experimental study describes the turbulent wake behind a two-dimensional porous obstruction, consisting of a circular array of cylinders. The cylinders extend from the channel bed through the water surface, mimicking ...

Zong, Lijun

470

Capacity of a Nonlinear Optical Channel With Finite Memory  

Science Journals Connector (OSTI)

The channel capacity of a nonlinear, dispersive fiber-optic link is revisited. To this end, the popular Gaussian noise (GN) model is extended with a parameter to account for the finite...

Agrell, Erik; Alvarado, Alex; Durisi, Giuseppe; Karlsson, Magnus

2014-01-01T23:59:59.000Z

471

On Space–Frequency Correlation of UWB MIMO Channels  

E-Print Network [OSTI]

Conventional multiple-input-multiple-output (MIMO) channel correlation models focus on describing the complex amplitude correlation of resolvable multipath components (MPCs). It has recently been shown that the time-of-arrival ...

Hong, Xuemin

472

Tier I ecological evaluation for phase III channel improvements to the John. F. Baldwin ship channel  

SciTech Connect (OSTI)

To assist the US Army Corps of Engineers (USACE) in determing whether the material from proposed dredging of the John F. Baldwin Ship Channel (JFBSC) is suitable for unrestricted, unconfined open-ocean disposal, Battelle/Marine Sciences Laboratory (MSL) prepared this report. Based on these findings, sediments that would be removed during Phase III improvements to the JFBSC fail to meet the three suitability criteria for open-ocean disposal. Firstly, fine-grained sediments comprise a significant fraction of the bottom material in some areas of the channel, and this material is not exposed to high current or wave energy. Dredged material from the JFBSC is not being proposed for beach nourishment; therefore the second criterion is not met. JFBSC sediments do not meet the third criterion because, although they may be substantially similar to substrates at several of the proposed disposal sites, they are from an area that historically has experienced loading of contaminants, which toxicology studies have shown have the potential to result in acute toxicity or significant bioaccumulation.

Bienert, R.W.; Shreffler, D.K.; Word, J.Q.; Kohn, N.P. [Battelle/Marine Sciences Lab., Sequim, WA (United States)

1994-05-01T23:59:59.000Z

473

Alpha Channeling in Rotating Plasma with Stationary Waves  

SciTech Connect (OSTI)

An extension of the alpha channeling effect to supersonically rotating mirrors shows that the rotation itself can be driven using alpha particle energy. Alpha channeling uses radiofrequency waves to remove alpha particles collisionlessly at low energy. We show that stationary magnetic fields with high n? can be used for this purpose, and simulations show that a large fraction of the alpha energy can be converted to rotation energy.

A. Fetterman and N.J. Fisch

2010-02-15T23:59:59.000Z

474

Winter feeding of channel catfish fingerlings in Texas  

E-Print Network [OSTI]

WINTER FEEDING OF CHANNEL CATFISH FINGERLINGS IN TEXAS A Thesis by SCOTT ARMSTRONG DAVIS Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degre'e of MASTER OF SCIENCE May 1983... Major Subject; Wildlife and Fisheries Sciences WINTER FEEDING OF CHANNEL CATFISH FINGERLINGS IN TEXAS A Thesis SCOTT ARMSTRONG DAVIS Approved as to style and content by: Robert Stickney (Chairman of Committee) Edwin Robinson (Member) 'allace...

Davis, Scott Armstrong

1983-01-01T23:59:59.000Z

475

Improved Miscible Nitrogen Flood Performance Utilizing Advanced Reservoir Characterization and Horizontal Laterals in a Class I Reservoir - East Binger (Marchand) Unit  

SciTech Connect (OSTI)

The DOE-sponsored project at the East Binger Unit is an investigation into the benefits of reservoir characterization and horizontal wells in this particular setting of geologic and recovery method. The geologic setting is a tight (average porosity of 7% and average permeability of less than 1 millidarcy) Pennsylvanian-age sandstone at about 10,000 feet, and the recovery method is a miscible nitrogen flood. The projected oil recovery of the East Binger Unit, prior to the initiation of this project, was about 25%. Gravity segregation of nitrogen and crude oil was believed to be the principal cause of the poor sweep efficiency, and it was envisioned that with horizontal producing wells in the lower portion of the reservoir and horizontal injection wells near the top, the process could be converted from a lateral displacement process to a vertical displacement/gravity assisted process. Through the characterization and field development work completed in Budget Periods 1 and 2, Binger Operations, LLC (BOL) has developed a different interpretation of the sweep problem as well as a different approach to improving recovery. The sweep problem is now believed to be one of an areal nature, due to a combination of natural and hydraulic fracturing. Vertical wells have provided a much better economic return than have the horizontal wells. The natural and hydraulic fracturing manifests itself as a direction of higher permeability, and the flood is being converted to a line drive flood aligned with this orientation. Consistent with this concept, horizontal wells have been drilled along the line of the fracture orientation, such that hydraulic fracturing leads to 'longitudinal' fractures, in line with the wellbore. As such, the hydraulically fractured horizontal wells are not significantly different than hydraulically fractured vertical wells - save for the potential for a much longer fracture face. This Topical Report contains data from new wells, plus new and updated production, pressure, and gas analysis data that was not included in the Topical Report provided at the end of Budget Period 1. The analysis and interpretation of these data are provided in the many technical reports submitted throughout this project.

Joe Sinner

2004-06-30T23:59:59.000Z

476

A better understanding of a Uinta Basin channelized analog reservoir through geostatistics and reservoir simulation  

E-Print Network [OSTI]

the behavior of channelized oil and gas reservoirs. Results show that the number of channels in the model can have a significant effect on performance. The rock properties in these channels and the channel paths are also important factors that determine...

Robbana, Enis

2012-06-07T23:59:59.000Z

477

A Non-cooperative Differential Game Model for Frequency Reuse Based Channel Allocation in Satellite Networks  

Science Journals Connector (OSTI)

In this paper, channel resource allocation problem for LEO mobile satellite systems is investigated and a new dynamic channel resource allocation scheme is proposed based on differential game. Optimal channel resource allocated to each satellite beams ... Keywords: Differential game, Dynamic channel allocation, LEO, Mobile satellite systems

Haitao Xu, Xianwei Zhou

2014-11-01T23:59:59.000Z

478

An experimental investigation of heat transfer in narrow, rectangular cooling channels with pin-fins  

E-Print Network [OSTI]

][Ro]/[Ro] = 0.12). Heat transfer in a stationary pin-fin channel can be enhanced up to 3.8 times that of a smooth channel. Rotation enhances the heat transferred from the pin-fin channels 1.5 times that of the stationary pin-fin channels. Overall, rotation...

Wright, Lesley Mae

2012-06-07T23:59:59.000Z

479

Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation  

E-Print Network [OSTI]

Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation Fatih to multi-channel operation, including Green's function diffusive conduction solution and crosstalk conduction based optoelectronic switches that accommodate >100 optical channels (with 2,000mm-2 channel

Miller, David A. B.

480

Horizontal Plate Plate  

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

Metadata also available as Metadata: IdentificationInformation DataQualityInformation SpatialDataOrganizationInformation SpatialReferenceInformation EntityandAttributeI...

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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Entanglement-assisted capacity of a quantum channel and the reverse Shannon theorem  

E-Print Network [OSTI]

We show that the entanglement-assisted classical capacity of a noisy quantum channel is given by an expression parallel to that for the capacity of a purely classical channel: i.e., the maximum, over channel inputs $\\rho$, of the entropy of the channel input plus the entropy of the channel output minus their joint entropy, the latter being defined as the entropy of an entangled purification of $\\rho$ after half of it has passed through the channel. We calculate entanglement-assisted capacities for the amplitude damping channel and for bosonic channels in the presence of attenuation and Gaussian noise. We discuss how many independent parameters are required to completely characterize the asymptotic behavior of a general quantum channel, alone or in the presence of ancillary resources such as prior entanglement. In the classical analog of entanglement assisted communication---communication over a discrete memoryless channel (DMC) between parties who share prior random information---we show that one parameter is...

Bennett, C H; Smolin, J A; Thapliyal, A V; Bennett, Charles H.; Shor, Peter W.; Smolin, John A.; Thapliyal, Ashish V.

2001-01-01T23:59:59.000Z

482

Integrated approach towards the application of horizontal wells to improve waterflooding performance. Quarterly report, January 1--March 31, 1997  

SciTech Connect (OSTI)

The overall purpose of the proposed project is to improve secondary recovery performance of a marginal oil field through the use of an appropriate reservoir management plan. The selection of plan will be based on the detailed reservoir description using an integrated approach. The authors expect that 2 to 5% of the original oil in place will be recovered using this method. This should extend the life of the reservoir by at least 10 years. The project is divided into two stages. In Stage 1 of the project, the authors selected part of the Glenn Pool Field-Self Unit. They conducted cross borehole tomography surveys and formation micro scanner logs through a newly drilled well. By combining the state-of-the-art data with conventional core and log data, they developed a detailed reservoir description based on an integrated approach. After conducting extensive reservoir simulation studies, they evaluated alternate reservoir management strategies to improve the reservoir performance including drilling of a horizontal injection well. They observed that selective completion of many wells followed by an increase in the injection rate was the most feasible option to improve the performance of the Self Unit. This management plan is currently being implemented and the performance is being monitored. Stage 2 of the project will involve selection of part of the same reservoir (Berryhill Unit-Tract 7), development of reservoir description using only conventional data, simulation of flow performance using developed reservoir description, selection of an appropriate reservoir management plan, and implementation of the plan followed by monitoring of reservoir performance.

Kelkar, M.; Liner, C.; Kerr, D.

1997-10-01T23:59:59.000Z

483

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)

The primary objective of this project was to enhance domestic petroleum production by demonstration and transfer of horizontal drilling technology in the Paradox basin, Utah, Colorado, Arizona, and New Mexico. If this project can demonstrate technical and economic feasibility, then the technique can be applied to approximately 100 additional small fields in the Paradox basin alone, and result in increased recovery of 25 to 50 million barrels (40-80 million m3) of oil. This project was designed to characterize several shallow-shelf carbonate reservoirs in the Pennsylvania (Desmoinesian) Paradox Formation, choose the best candidate(s) for a pilot demonstration project to drill horizontally from existing vertical wells, monitor well performances, and report associated validation activities.

Chidsey, Thomas C. Jr.; Eby, David E.; Wray, Laura L.

2001-04-19T23:59:59.000Z

484

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)

The project's primary objective was to enhance domestic petroleum production by demonstration and transfer of horizontal drilling technology in the Paradox Basin, Utah, Colorado, Arizona, and New Mexico. If this project can demonstrate technical and economic feasibility, then the technique can be applied to approximately 100 additional small fields in the Paradox Basin alone, and result in increased recovery of 25 to 50 million barrels (4-8 million m3) of oil. This project was designed to characterize several shallow-shelf carbonate reservoirs in the Pennsylvanian (Desmoinesian) Paradox Formation, choose the best candidate(s) for a pilot demonstration project to drill horizontally from existing vertical wells, monitor well performance(s), and report associated validation activities.

Chidsey, Jr., Thomas C.; Eby, David E.; Wray, Laural L.

2001-11-26T23:59:59.000Z

485

ATP-Sensitive Potassium Channels Exhibit Variance in the Number of Open Channels below the Limit Predicted for Identical and Independent Gating  

E-Print Network [OSTI]

In small cells containing small numbers of ion channels, noise due to stochastic channel opening and closing can introduce a substantial level of variability into the cell's membrane potential. Negatively cooperative ...

Choi, Kee-Hyun

486

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR - EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

The objective of this project is two-fold. It will demonstrate use of nitrogen as a widely available, cost-effective and environmentally superior injectant for miscible floods. It will also demonstrate the effectiveness of horizontal wellbores in reducing gas breakthrough and cycling. It is expected that the demonstration will lead to implementation of nitrogen injection projects in areas without readily available carbon dioxide sources. Technology transfer will occur throughout the project.

Joe Sinner

2002-03-26T23:59:59.000Z

487

Design and Implementation of a CO2 Flood Utilizing Advanced Reservoir Characterization and Horizontal Injection Wells In a Shallow Shelf Carbonate Approaching Waterflood Depletion, Class II  

SciTech Connect (OSTI)

The purpose of this project was to economically design an optimum carbon dioxide (CO2) flood for a mature waterflood nearing its economic abandonment. The original project utilized advanced reservoir characterization and CO2 horizontal injection wells as the primary methods to redevelop the South Cowden Unit (SCU). The development plans; project implementation and reservoir management techniques were to be transferred to the public domain to assist in preventing premature abandonment of similar fields.

Wier, Don R. Chimanhusky, John S.; Czirr, Kirk L.; Hallenbeck, Larry; Gerard, Matthew G.; Dollens, Kim B.; Owen, Rex; Gaddis, Maurice; Moshell, M.K.

2002-11-18T23:59:59.000Z

488

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR -- EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

Budget Period 2 of the East Binger Unit (''EBU'') DOE Project has been. Recent activities included additional data gathering and project monitoring, plus initiation of work on an SPE paper on the modeling efforts of the project. Early production performance suggests horizontal wells do not provide sufficient additional production over vertical wells to justify their incremental cost. It will take more time to evaluate the impact of the horizontal wells on sweep and ultimate recovery, but it is unlikely that an improvement in recovery will be sufficient to make the overall economic value of horizontal wells greater than the economic value of vertical wells. Monitoring of overall performance of the pilot area continues. Overall response to the various projects continues to be very favorable. Injection into the pilot area has nearly doubled, while gas production and nitrogen content of produced gas have both decreased. Nitrogen recycle within the pilot area has dropped from 60% to 20%. Efforts to further disseminate knowledge gained through this project, by means of technical paper presentations to industry groups, are underway. Project monitoring and technology transfer will be focus areas of Budget Period 3.

Joe Sinner

2004-08-24T23:59:59.000Z

489

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR - EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

The first horizontal well ever in the Marchand sandstone has been drilled. Although major difficulties arose with certain aspects of the drilling operation, a horizontal section of approximately 1300 was drilled. The section was left open hole as planned. The shales just above and between the Marchand sands appear to be very water-sensitive, requiring careful drilling practices. These shales were encountered in the middle part of the curve (45{sup o}-60{sup o}), which can be the most difficult part of a directional well to clean. Difficulties with these shales and cleaning this section led to a parted drill string, requiring a sidetrack. There were no major geologic ''surprises'', such as formation tops coming in much shallower or deeper than expected, or unexpected faults. Thin kaolinite beds were encountered in the horizontal section of the well. Previous descriptions of the mineralogy of this formation did not mention any kaolinite. The lateral extent of these beds is unknown. Completion of the well is under way. One additional injection profile was gathered during the quarter. Results are consistent with other recently profiles that show gas within the C Sand is overriding the oil and failing to sweep the deeper parts of the reservoir. International Reservoir Technologies, Inc. has completed the construction of the pilot area reservoir simulation model and the updating of historical production and injection data. They have begun fine-tuning the history match to better match production data and recently acquired pressure and profile data.

Joe Sinner

2001-08-10T23:59:59.000Z

490

IMPROVED MISCIBLE NITROGEN FLOOD PERFORMANCE UTILIZING ADVANCED RESERVOIR CHARACTERIZATION AND HORIZONTAL LATERALS IN A CLASS I RESERVOIR - EAST BINGER (MARCHAND) UNIT  

SciTech Connect (OSTI)

Implementation of the work program of Budget Period 2 of the East Binger Unit (''EBU'') DOE Project continues. Major development work planned for the project includes the drilling of three horizontal production and one vertical injection wells, the conversion of five wells from production to injection service, and the expansion of injection capacity at the nitrogen management facility. Other work items include initiation of project monitoring and continued reservoir simulation. EBU 74G-2, the injection well planned to support the production of EBU 64-3H, has been drilled. Completion was underway at the time of this report. EBU 64-3H was fracture-stimulated during the period, further increasing production from this new horizontal well. Drilling of the final two wells of the pilot project is planned for 2003. Both are planned as horizontal producing wells. Work also began on projects aimed at increasing injection in the pilot area. The project to add compression and increase injection capacity at the nitrogen management facility was initiated, with completion targeted for March 2003. Additional producer-to-injector conversions are expected to be implemented around the same time. The revised history match of the simulation model has been completed, and work has begun to evaluate options with forecast simulations. The quality of the history match is significantly improved over the prior match. The predicted distribution of remaining reserves in the field is significantly changed. Decisions on projects planned for implementation later in Budget Period 2 will be guided by new forecasts.

Joe Sinner

2003-01-31T23:59:59.000Z

491

Impact of horizontal resolution on simulation of precipitation extremes in an aqua-planet version of the Community Atmosphere Model (CAM)  

SciTech Connect (OSTI)

One key question regarding current climate models is whether the projection of climate extremes converges to a realistic representation as the spatial and temporal resolutions of the model are increased. Ideally the model extreme statistics should approach a fixed distribution once the resolutions are commensurate with the characteristic length and time scales of the processes governing the formation of the extreme phenomena of interest. In this study, a series of AGCM runs with idealized 'aquaplanet-steady-state' boundary conditions have been performed with the Community Atmosphere Model CAM3 to investigate the effect of horizontal resolution on climate extreme simulations. The use of the aquaplanet framework highlights the roles of model physics and dynamics and removes any apparent convergence in extreme statistics due to better resolution of surface boundary conditions and other external inputs. Assessed at a same large spatial scale, the results show that the horizontal resolution and time step have strong effects on the simulations of precipitation extremes. The horizontal resolution has a much stronger impact on precipitation extremes than on mean precipitation. Updrafts are strongly correlated with extreme precipitation at tropics at all the resolutions, while positive low-tropospheric temperature anomalies are associated with extreme precipitation at mid-latitudes.

Li, F.; Collins, W.D.; Wehner, M.F.; Williamson, D.L.; Olson, J.G.; Algieri, C.

2011-03-01T23:59:59.000Z

492

The Origin of Subdwarf B Star (I): the Formation Channels  

E-Print Network [OSTI]

Subdwarf B (sdB) stars (and related sdO/sdOB stars) are believed to be helium core-burning objects with very thin hydrogen-rich envelopes. In recent years it has become increasingly clear from observational surveys that a large fraction of these objects are members of binary systems. To better understand their formation, we here present the results of a detailed investigation of the three main binary evolution channels that can lead to the formation of sdB stars: the common envelope (CE) ejection channel, the stable Roche lobe overflow (RLOF) channel and the double helium white dwarfs (WDs) merger channel. We obtained the conditions for the formation of sdB stars from each of these channels using detailed stellar and binary evolution calculations where we modelled the detailed evolution of sdB stars and carried out simplified binary population synthesis simulations. The observed period distribution of sdB stars in compact binaries strongly constrains the CE ejection parameters. We also present the distribution of sdB stars in the $T_{\\rm eff}$ - $\\log g$ diagram, the Hertzsprung-Russell diagram and the distribution of mass functions.

Zhanwen Han; Philipp Podsiadlowski; Pierre L. F. Maxted; Tom R. Marsh; Natasha Ivanova

2002-06-09T23:59:59.000Z

493

Evaluation of Dynamic Channel and Power Assignment for Cognitive Networks  

SciTech Connect (OSTI)

In this paper, we develop a unifying optimization formulation to describe the Dynamic Channel and Power Assignment (DCPA) problem and evaluation method for comparing DCPA algorithms. DCPA refers to the allocation of transmit power and frequency channels to links in a cognitive network so as to maximize the total number of feasible links while minimizing the aggregate transmit power. We apply our evaluation method to five algorithms representative of DCPA used in literature. This comparison illustrates the tradeoffs between control modes (centralized versus distributed) and channel/power assignment techniques. We estimate the complexity of each algorithm. Through simulations, we evaluate the effectiveness of the algorithms in achieving feasible link allocations in the network, as well as their power efficiency. Our results indicate that, when few channels are available, the effectiveness of all algorithms is comparable and thus the one with smallest complexity should be selected. The Least Interfering Channel and Iterative Power Assignment (LICIPA) algorithm does not require cross-link gain information, has the overall lowest run time, and highest feasibility ratio of all the distributed algorithms; however, this comes at a cost of higher average power per link.

Syed A. Ahmad; Umesh Shukla; Ryan E. Irwin; Luiz A. DaSilva; Allen B. MacKenzie

2011-03-01T23:59:59.000Z

494

Single particle resuspension experiments in turbulent channel flows  

Science Journals Connector (OSTI)

Abstract The resuspension of a monolayer of spherical glass and polypropylene particles from a channel floor by a dry and turbulent airflow was investigated. Special attention was given to the influence of the particle size, the particle and wall material, the wall surface roughness and the critical friction velocity. The experiments were performed in an air-driven small-scale test facility and the channel floor was made of interchangeable glass and steel wall segments. The turbulent channel flow was recorded using a planar Particle Image Velocimetry system. Prior to the experiments the spherical particles were classified using Scanning Electron Microscopy techniques. The particles on the channel floor were detected and classified by means of an optical microscope combined with a digital camera. A statistically sufficient particle monolayer was generated on the channel floor by dispersing the particles into the flow during a pure deposition regime. Afterwards, particle resuspension was induced by stepwise increase of the fluid velocity. The resuspension was quantified by the fraction of remaining particles against the friction velocity for a particle diameter range between 3 µm and 45 µm. It was found that particles instantly resuspend once a critical friction velocity is exceeded. Larger particles require lower fluid velocities for the removal than smaller particles. The wall surface roughness seems to scatter the resuspension process with respect to the friction velocity.

T. Barth; J. Preuß; G. Müller; U. Hampel

2014-01-01T23:59:59.000Z

495

Exponential coefficient plots for identifying cement channels from temperature logs  

SciTech Connect (OSTI)

One technique for identifying a cement channel in such a well is to inject cold water or diesel fuel for a period of time, followed by recording shut-in temperature profiles after the injection ceases. Qualitative judgements are made from the appearance of these profiles in order to confirm the existence of a channel. Alternatively, by processing the temperature logs mathematically, an exponential coefficient may be calculated and plotted against depth. This exponential coefficient plot is very responsive to the presence of cold fluid in a cement channel, and confirms a channel's existence quantitatively and conclusively. This paper discusses use of such a mathematical relationship in a predictive fashion for identifying injection zones. Methods are given for deriving and plotting the exponential coefficients from temperature logs of a well placed on cold fluid injection. Three examples are presented on the application of exponential coefficient plots to actual field logs for confirmation of suspected channels and for assessment of the uniformity of cement bonding.

Barnette, J.C.; Lanuke, E.W.; Carlson, N.R.

1984-01-01T23:59:59.000Z

496

Home Channel News: Forest products giants float idea for 'e-commerce' -Brief Article FindArticles > Home Channel News > April 17, 2000 > Article > Print friendly  

E-Print Network [OSTI]

Home Channel News: Forest products giants float idea for 'e-commerce' - Brief Article FindArticles > Home Channel News > April 17, 2000 > Article > Print friendly Forest products giants float idea for 'e?tag=artBody;col1 (1 of 3) [11/13/2008 10:48:41 AM] #12;Home Channel News: Forest products giants float idea for 'e

497

BISON Enhanced with Improved Models for Cladding and Coolant Channels |  

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

Enhanced with Improved Models for Cladding and Coolant Enhanced with Improved Models for Cladding and Coolant Channels BISON Enhanced with Improved Models for Cladding and Coolant Channels January 29, 2013 - 10:54am Addthis Pin-scale Code Development Development of BISON for the engineering-scale simulation of nuclear fuel performance continued. Enhancements during this quarter include implementation of a nonlinear material model for Zircaloy cladding that simultaneously combines the phenomena of plasticity, thermal creep, and irradiation creep; implementation of a complete set of material properties and a creep model for stainless steel cladding; and modification of the coolant sub-channel model to better support simulations of loss-of- coolant-accidents. BISON simulations are being compared to relevant empirical fuel pin data

498

Sub-micrometer fluidic channel for measuring photon emitting entities  

DOE Patents [OSTI]

A nanofluidic channel fabricated in fused silica with an approximately 500 nm square cross section was used to isolate, detect and identify individual quantum dot conjugates. The channel enables the rapid detection of every fluorescent entity in solution. A laser of selected wavelength was used to excite multiple species of quantum dots and organic molecules, and the emission spectra were resolved without significant signal rejection. Quantum dots were then conjugated with organic molecules and detected to demonstrate efficient multicolor detection. PCH was used to analyze coincident detection and to characterize the degree of binding. The use of a small fluidic channel to detect quantum dots as fluorescent labels was shown to be an efficient technique for multiplexed single molecule studies. Detection of single molecule binding events has a variety of applications including high throughput immunoassays.

Stavis, Samuel M; Edel, Joshua B; Samiee, Kevan T; Craighead, Harold G

2014-11-18T23:59:59.000Z

499

Identifying Calcium Channels and Porters in Plant Membranes  

SciTech Connect (OSTI)

The overall objectives of the proposal submitted in 6/90 was to understand how Ca was transported across plant membranes, and how these transport pathways were regulated. Ca participates in many cellular processes, including the transduction of hormonal and environmental signals, secretion, and protein folding. These processes depend on the coordination of passive Ca fluxes via channels and active Ca pumps; however these transport pathways are poorly understood in plants. We had, therefore, proposed to identify and characterize Ca transport proteins, such as the inositol-1 ,4,5-trisphosphate (IP3)-sensitive Ca channels and Ca pumps. We have had difficulties characterizing and cloning the IP3-sensitive Ca channel, but have made considerable progress on the biochemical characterization, and partial purification of a 120 kD Ca-pumping ATPase. We have begun to determine the structure of Ca pumps by molecular cloning and have already obtained a partial cDNA with features characteristic of Ca pumps.

Sze, Heven

1998-04-01T23:59:59.000Z

500

Beam-dynamics Simulations for Channeling Radiation Electron Source  

Science Journals Connector (OSTI)

Abstract The intensity and the brilliance of the compact X-ray sources based on channeling radiation are strongly dependant on the electron beam quality. It was recently proposed to combine a field-emission electron source with channeling radiation through a diamond crystal to produce high-spectral-brilliance X-rays. There are two experiments in preparation at Fermilab to prove this technique. The beam energy in the two cases are 5-MeV and 40-MeV respectively. The field-emitted beams have emittance in the nanometer range when the microbunch is 25 ps long and the charge is about 2.5fC. RF guns operating at 1.3 GHz can produce trains of at least 2 × 105 microbunches. In this contribution we present beam-dymamics simulations of a the field-emission and subsequent accelerator up to the channeling-radiation target.

D. Mihalcea; C.A. Brau; B.K. Choi; W. Gabella; J.D. Jarvis; J.W. Lewellen; M. Mendenhall; P. Piot

2014-01-01T23:59:59.000Z