Sample records for logging multicomponent geothermometers

  1. Multicomponent Geothermometers | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant JumpMarysville,Missoula,MontereyHill,SpurrMulberry, Ohio:

  2. A new illite geothermometer

    SciTech Connect (OSTI)

    Ballantyne, Judith M.; Moore, Joseph N.

    1988-01-01T23:59:59.000Z

    Sericite, either as illite or illite/smectite, is ubiquitous in geothermal systems. Theoretical Ca- and Na-smectite contents of non-expanding geothermal sericites have been calculated from published electron microprobe analyses. Geothermal sericites can be modeled as solid solutions of muscovite and smectite. For those sericites that fit the model, the amount of smectite in solid solution is related to temperature by the expression TºC = 1000/(0.45LogX{sub smectite} + 2.38) – 273. The temperature dependence of illite interlayer chemistry suggests a related temperature dependence of the K, Na and Ca content of geothermal fluids. The original data used by Fournier and Truesdell (1973) to derive the empirical Na-K-Ca geothermometer for geothermal fluids can be modeled equally well by an equation incorporating the equilibrium constant for the reaction of smectite to illite: T ºC = 1.145*10{sup 3}/([0.35LogNa + 0.175LogCa – 0.75LogK] + 1.51) – 273, where the concentration units are molalities. This supports the hypothesis that illite and illite/smectite are important controls on the concentrations of Na, K and Ca in geothermal fluids.

  3. Multicomponent membranes

    DOE Patents [OSTI]

    Kulprathipanja, Santi (Hoffman Estates, IL); Kulkarni, Sudhir S. (Hoffman Estates, IL); Funk, Edward W. (Highland Park, IL)

    1988-01-01T23:59:59.000Z

    A multicomponent membrane which may be used for separating various components which are present in a fluid feed mixture comprises a mixture of a plasticizer such as a glycol and an organic polymer cast upon a porous organic polymer support. The membrane may be prepared by casting an emulsion or a solution of the plasticizer and polymer on the porous support, evaporating the solvent and recovering the membrane after curing.

  4. Change Log

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

    Log NERSC-8 Trinity Benchmarks Change Log 09032013 Correction applied to MiniDFT web-page (to remove inconsistency with MiniDFT README). Capability Improvement measurements...

  5. Validation of Multicomponent Equilibrium Geothermometry at Four Geothermal Power Plants

    SciTech Connect (OSTI)

    Ghanashyam Neupane; Jeffrey S Baum; Earl D Mattson; Gregory L Mines; Carl D Palmer; Robert W Smith

    2001-01-01T23:59:59.000Z

    This paper evaluates our ability to predict geothermal reservoir temperatures using water compositions measured from surface hot springs or shallow subsurface wells at four geothermal sites prior to the startup of geothermal energy production using RTEst, a multicomponent equilibrium geothermometer we have developed and are testing. The estimated reservoir temperatures of these thermal expressions are compared to measured bottom-hole temperatures of production wells at Raft River, ID; Neal Hot Springs, OR; Roosevelt Hot Springs, UT; and Steamboat Springs, NV geothermal sites. In general, temperatures of the producing reservoir estimated from the composition of water from surface expressions/shallow wells using RTEst are similar to the measured bottom-hole temperatures. For example, estimates for the Neal Hot Springs system are within ±10 ºC of the production temperatures. However, some caution must be exercised in evaluating RTEst predictions. Estimated temperature for a shallow Raft River well (Frazier well) is found to be slightly lower (ca. 15 ºC) than the bottom-hole temperatures from the geothermal plant production wells. For the Raft River system, local geology and fluid mixing model indicate that the fluid source for this shallow well may not have originated from the production reservoir. Similarly, RTEst results for Roosevelt Hot springs and Steamboat Springs geothermal areas were found consistent with the reservoir temperatures obtained from deep wells. These results suggest that the RTEst could be a valuable tool for estimating temperatures and evaluation geothermal resources.

  6. Exploring the reactivity of bacterial multicomponent monooxygenases

    E-Print Network [OSTI]

    Tinberg, Christine Elaine

    2010-01-01T23:59:59.000Z

    Chapter 1. Introduction: The Reactivity of Bacterial Multicomponent Monooxygenases Bacterial multicomponent monooxygenases constitute a remarkable family of enzymes that oxidize small, inert hydrocarbon substrates using ...

  7. CRYSTALLIZATION IN MULTICOMPONENT GLASSES

    SciTech Connect (OSTI)

    KRUGER AA; HRMA PR

    2009-10-08T23:59:59.000Z

    In glass processing situations involving glass crystallization, various crystalline forms nucleate, grow, and dissolve, typically in a nonuniform temperature field of molten glass subjected to convection. Nuclear waste glasses are remarkable examples of multicomponent vitrified mixtures involving partial crystallization. In the glass melter, crystals form and dissolve during batch-to-glass conversion, melter processing, and product cooling. Crystals often agglomerate and sink, and they may settle at the melter bottom. Within the body of cooling glass, multiple phases crystallize in a non-uniform time-dependent temperature field. Self-organizing periodic distribution (the Liesegnang effect) is common. Various crystallization phenomena that occur in glass making are reviewed.

  8. Change Log

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamos LaboratoryCertified Reference MaterialsChange Log

  9. ILLEGAL LOGGING IN INDONESIA

    E-Print Network [OSTI]

    ILLEGAL LOGGING IN INDONESIA THE ENVIRONMENTAL, ECONOMIC AND SOCIAL COSTS #12;ILLEGAL LOGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 II. Environmental Impacts of Illegal Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 #12;ILLEGAL LOGGING IN INDONESIA | 2 Executive Summary Indonesia's rainforests are the third

  10. THERMODYNAMICS Unified Model for Nonideal Multicomponent

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    THERMODYNAMICS Unified Model for Nonideal Multicomponent Molecular Diffusion Coefficients Alana and a rigorous descrip- tion of mixture nonideality in the framework of irreversible thermodynamics. Molecular

  11. Geothermal: Sponsored by OSTI -- Validation of Multicomponent...

    Office of Scientific and Technical Information (OSTI)

    Validation of Multicomponent Equilibrium Geothermometry at Four Geothermal Power Plants Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search...

  12. GROUND STATES AND DYNAMICS OF MULTICOMPONENT BOSEEINSTEIN CONDENSATES

    E-Print Network [OSTI]

    Bao, Weizhu

    GROUND STATES AND DYNAMICS OF MULTICOMPONENT BOSE­EINSTEIN CONDENSATES WEIZHU BAO MULTISCALE MODEL a multicomponent Bose­Einstein condensate (BEC) at zero or a very low temperature. In preparation for the numerics of multicomponent BEC. Key words. multicomponent, Bose­Einstein condensate, vector Gross­Pitaevskii equations

  13. Wireline logging tool catalog

    SciTech Connect (OSTI)

    Verdier, M.

    1986-01-01T23:59:59.000Z

    This book provides discussions on wireline logging tools. The contents are resistivity, radioactivity, acoustic, formation dip and borehold geometry, formation sampling, and auxiliary services.

  14. Multicomponent Equilibrium Models for Testing Geothermometry Approaches

    SciTech Connect (OSTI)

    Cooper, D. Craig; Carl D. Palmer; Robert W. Smith; Travis L. McLing

    2013-02-01T23:59:59.000Z

    Geothermometry is an important tool for estimating deep reservoir temperature from the geochemical composition of shallower and cooler waters. The underlying assumption of geothermometry is that the waters collected from shallow wells and seeps maintain a chemical signature that reflects equilibrium in the deeper reservoir. Many of the geothermometers used in practice are based on correlation between water temperatures and composition or using thermodynamic calculations based a subset (typically silica, cations or cation ratios) of the dissolved constituents. An alternative approach is to use complete water compositions and equilibrium geochemical modeling to calculate the degree of disequilibrium (saturation index) for large number of potential reservoir minerals as a function of temperature. We have constructed several “forward” geochemical models using The Geochemist’s Workbench to simulate the change in chemical composition of reservoir fluids as they migrate toward the surface. These models explicitly account for the formation (mass and composition) of a steam phase and equilibrium partitioning of volatile components (e.g., CO2, H2S, and H2) into the steam as a result of pressure decreases associated with upward fluid migration from depth. We use the synthetic data generated from these simulations to determine the advantages and limitations of various geothermometry and optimization approaches for estimating the likely conditions (e.g., temperature, pCO2) to which the water was exposed in the deep subsurface. We demonstrate the magnitude of errors that can result from boiling, loss of volatiles, and analytical error from sampling and instrumental analysis. The estimated reservoir temperatures for these scenarios are also compared to conventional geothermometers. These results can help improve estimation of geothermal resource temperature during exploration and early development.

  15. Logging in to Hopper

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatestCenterLogging in Logging in to FranklinLogging in

  16. On rational solutions of multicomponent and matrix KP hierarchies

    E-Print Network [OSTI]

    Alberto Tacchella

    2010-11-05T23:59:59.000Z

    We derive some rational solutions for the multicomponent and matrix KP hierarchies generalising an approach by Wilson. Connections with the multicomponent version of the KP/CM correspondence are discussed.

  17. aniline dioxygenase-related multicomponent: Topics by E-print...

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

    and cleared with chloral hydrate to allow high Haseloff, Jim 4 Multi-Component Dark Matter HEP - Phenomenology (arXiv) Summary: We explore multi-component dark matter models...

  18. G8 Illegal Logging Dialogue G8 Illegal Logging Dialogue

    E-Print Network [OSTI]

    G8 Illegal Logging Dialogue G8 Illegal Logging Dialogue A global legislator partnership for legal International http://www.illegal-logging.info/item_single.php?item=presentation&item_id=133&approach_id=8 #12;G8 Illegal Logging Dialogue Presentation purpose · role of GLOBE International · aim and objectives of the G8

  19. NMR logging apparatus

    DOE Patents [OSTI]

    Walsh, David O; Turner, Peter

    2014-05-27T23:59:59.000Z

    Technologies including NMR logging apparatus and methods are disclosed. Example NMR logging apparatus may include surface instrumentation and one or more downhole probes configured to fit within an earth borehole. The surface instrumentation may comprise a power amplifier, which may be coupled to the downhole probes via one or more transmission lines, and a controller configured to cause the power amplifier to generate a NMR activating pulse or sequence of pulses. Impedance matching means may be configured to match an output impedance of the power amplifier through a transmission line to a load impedance of a downhole probe. Methods may include deploying the various elements of disclosed NMR logging apparatus and using the apparatus to perform NMR measurements.

  20. Modes of log gravity

    SciTech Connect (OSTI)

    Bergshoeff, Eric A.; Rosseel, Jan [Centre for Theoretical Physics, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands); Hohm, Olaf [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Townsend, Paul K. [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2011-05-15T23:59:59.000Z

    The physical modes of a recently proposed D-dimensional 'critical gravity', linearized about its anti-de Sitter vacuum, are investigated. All 'log mode' solutions, which we categorize as 'spin-2' or 'Proca', arise as limits of the massive spin-2 modes of the noncritical theory. The linearized Einstein tensor of a spin-2 log mode is itself a 'nongauge' solution of the linearized Einstein equations whereas the linearized Einstein tensor of a Proca mode takes the form of a linearized general coordinate transformation. Our results suggest the existence of a holographically dual logarithmic conformal field theory.

  1. Logging in to Franklin

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatestCenterLogging in Logging in to Franklin

  2. Thermodynamics and Mass Transport in Multicomponent,

    E-Print Network [OSTI]

    Manga, Michael

    Thermodynamics and Mass Transport in Multicomponent, Multiphase H2O Systems of Planetary Interest, cryogenic systems, thermodynamics, fluid dynamics, clathrates, Mars, Enceladus, sound speed Abstract Heat of the noncondensible components can greatly alter the thermodynamic properties of the phases and their flow properties

  3. THERMODYNAMICS Molecular Simulation of Multicomponent Reaction

    E-Print Network [OSTI]

    Lisal, Martin

    THERMODYNAMICS Molecular Simulation of Multicomponent Reaction and Phase Equilibria in MTBE Ternary System Martin Lisal´ E. Hala Laboratory of Thermodynamics, Institute of Chemical Process Fundamentals N1G 2W1, Canada Ivo Nezbeda E. Hala Laboratory of Thermodynamics, Institute of Chemical Process

  4. Multicomponent interfacial transport as described by

    E-Print Network [OSTI]

    Kjelstrup, Signe

    at the surface Distillation column Fuel cells Biological membranes Spinodal decomposition #12;5 Multicomponent R1q 100 % Rq2-R2q R2 q 100% R12-R21 R21 100 % Measure of the error: =210-4 -- optimal perturbation

  5. ,"_' ",',-i_~ :FORESTRY AND LOGGING

    E-Print Network [OSTI]

    ":~I> ", .' '. ,"_' ",',-i_~ . :FORESTRY AND LOGGING Hcscarch on Plantation Species A Positive in plantation forestry. par- ticularly in the tropics and the Southern Hemisphere. in the past 30 years plantation forestry. Indeed, one could list many exam- ples of such problems that have plagued exotic

  6. University of Connecticut Daily Temperature Log Specimen Refrigerator Log

    E-Print Network [OSTI]

    Oliver, Douglas L.

    University of Connecticut Daily Temperature Log ­ Specimen Refrigerator Log Month / Year Clinical ___ Fac. Mgmt. Resolution: 31 ___ Fac. Mgmt. Resolution: If the refrigerator temperature falls out refrigerator. This record must be kept for one year and then destroyed per State requirement

  7. NERSC Job Logs and Analytics

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

    For Users Job Logs & Analytics Job Logs & Analytics Queue Status A listing of jobs running and waiting in the queues (NERSC login required). Queue Wait Times Batch Queue Wait...

  8. Log data comparison and quantification

    SciTech Connect (OSTI)

    Mathews, M.; LaDelfe, C.

    1981-01-01T23:59:59.000Z

    Two geothermal wells were logged with similar wireline logs by several logging companies in a period of five years (1974 to 1979). The results of these equivalent logs are quantitatively different and in some cases qualitatively different. This difference also occurs between the same type of logs recorded at different time intervals by the same logging company. These various log data are related and qualified when logging equipment has not been properly calibrated. All depths referred to for either well are from their respective kelly bushing (KB). The first well (Mesa 31-1) is in the Imperial Valley of California and penetrates a sand, shale, and clay sedimentary lithology with a maximum temperature of 165/sup 0/C (330/sup 0/F) and a total depth of 1882 m (6175 ft). The second well (Phillips 9-1) is in the Roosevelt Hot Springs known geothermal resource areas (KGRA) of southwestern Utah and penetrates hydrothermally altered (low-grade metamorphic) and igneous lithology with a maximum temperature of 225/sup 0/C (440/sup 0/F) and a toatl depth of 2098.5 m (6885 ft). During that period (1974 to 1979) calibration of logging equipment in metamorphic and igneous lithologies could not be done. The logging data from this well is not qualitatively comparable in all cases and indicates the need for calibration. The open-hole log data acquired from Mesa 31-1 and Phillips 9-1 wells were compared to core data from these wells and comparison factors were calculated to better quantify the open-hole log data. Then open-hole log data were compared to the cased-hole log data from various companies and additional comparison factors were calculated for the cased-hole log data. These comparison factors allow for some quantification of these uncalibrated log data.

  9. Grid Logging: Best Practices Guide

    SciTech Connect (OSTI)

    Tierney, Brian L; Tierney, Brian L; Gunter, Dan

    2008-04-01T23:59:59.000Z

    The purpose of this document is to help developers of Grid middleware and application software generate log files that will be useful to Grid administrators, users, developers and Grid middleware itself. Currently, most of the currently generated log files are only useful to the author of the program. Good logging practices are instrumental to performance analysis, problem diagnosis, and security auditing tasks such as incident tracing and damage assessment. This document does not discuss the issue of a logging API. It is assumed that a standard log API such as syslog (C), log4j (Java), or logger (Python) is being used. Other custom logging API or even printf could be used. The key point is that the logs must contain the required information in the required format. At a high level of abstraction, the best practices for Grid logging are: (1) Consistently structured, typed, log events; (2) A standard high-resolution timestamp; (3) Use of logging levels and categories to separate logs by detail and purpose; (4) Consistent use of global and local identifiers; and (5) Use of some regular, newline-delimited ASCII text format. The rest of this document describes each of these recommendations in detail.

  10. Australian Government on ILLEGAL logging

    E-Print Network [OSTI]

    Australian Government the AXE on ILLEGAL logging Bringing down a practical approach AN AUSTRALIAN. NOVEMBER 2006 #12;#12;Foreword Illegal logging corrupts the trade in timber-based products and inevitably management of the world's forest resources. Therefore, it is in Australia's interests to stop illegal logging

  11. Multi-component Nanoparticle Based Lubricant Additive to Improve...

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

    Nanoparticle Based Lubricant Additive to Improve Efficiency and Durability in Engines Multi-component Nanoparticle Based Lubricant Additive to Improve Efficiency and...

  12. MULTISCALE MODELING OF SOLIDIFICATION OF MULTI-COMPONENT ALLOYS

    E-Print Network [OSTI]

    Zabaras, Nicholas J.

    MULTISCALE MODELING OF SOLIDIFICATION OF MULTI-COMPONENT ALLOYS A Dissertation Presented;MULTISCALE MODELING OF SOLIDIFICATION OF MULTI-COMPONENT ALLOYS Lijian Tan, Ph.D. Cornell University 2007-dimensional dendrite growth of pure material and alloys, eutectic and peritectic solidification, convection effects

  13. Curvature Dependency of Surface Tension in Multicomponent Systems

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    Curvature Dependency of Surface Tension in Multicomponent Systems Erik Santiso Dept. of Chemical InterScience (www.interscience.wiley.com). The effect of curvature on the surface tension of droplets for multicomponent systems, the relation between the surface tension at the surface of tension and the distance

  14. Grid Logging: Best Practices Guide

    E-Print Network [OSTI]

    Tierney, Brian L

    2008-01-01T23:59:59.000Z

    Revision date: March 1, 2008 Grid Logging: Best Practicesis to help developers of Grid middleware and applicationlog files that will be useful to Grid administrators, users,

  15. Cation Geothermometers | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.Telluric Survey as explorationpage? ForChinaOpen EnergyCation

  16. Silica Geothermometers | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey JumpAirPowerSilcio SA Jump to: navigation,

  17. LOG HAZARD REGRESSION Huiying Sun

    E-Print Network [OSTI]

    Heckman, Nancy E.

    LOG HAZARD REGRESSION by Huiying Sun Ph.D, Harbin Institute of Technology, Harbin, CHINA, 1991 regression splines to estimate the two log marginal hazard func­ tions of bivariate survival times, where, 1995) hazard regression for estimating a univariate survival time. We derive an approach to find

  18. Acoustic paramagnetic logging tool

    DOE Patents [OSTI]

    Vail, III, William B. (Bothell, WA)

    1988-01-01T23:59:59.000Z

    New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth3 s magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation . The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores.

  19. Enhanced carbon-oxygen log interpretations using supplemental log curves

    SciTech Connect (OSTI)

    Wyatt, D.F. Jr.; Jacobson, L.A.; Fox, P.

    1994-12-31T23:59:59.000Z

    Supplemental measurements from induced nuclear spectrometry tools are examined to demonstrate what additional information they provide about the well and reservoir conditions. Logs in shut-in wells from Indonesia provide examples of oxygen activation measurements showing cross-flow from one reservoir to another via open perforations. Leaking squeezed perforations were also observed. An example from Alaska shows radioactive scale build-up in the casing which spectral analysis identifies as a mixture of uranium and thorium salts. Another log, where the casing fluid was replaced with crude oil, demonstrates a technique for identifying cement channels. Logs from Nigeria comparing oil saturation estimates before and after a squeeze operation illustrate the effect of casing fluid flushing of the formation through open perforations. Understanding the diagnostic character of these curves leads to higher confidence in the overall log interpretation process.

  20. J/$?$ absorption in a multicomponent hadron gas

    E-Print Network [OSTI]

    Dariusz Prorok; Ludwik Turko; David Blaschke

    2008-08-04T23:59:59.000Z

    A model for anomalous $J/\\Psi$ suppression in high energy heavy ion collisions is presented. As the additional suppression mechanism beyond standard nuclear absorption inelastic $J/\\Psi$ scattering with hadronic matter is considered. Hadronic matter is modeled as an evolving multi-component gas of point-like non-interacting particles (MCHG). Estimates for the sound velocity of the MCHG are given and the equation of state is compared with Lattice QCD data in the vicinity of the deconfinement phase transition. The approximate cooling pattern caused by longitudinal expansion is presented. It is shown that under these conditions the resulting $J/\\Psi$ suppression pattern agrees well with NA38 and NA50 data.

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

    E-Print Network [OSTI]

    Volesky, Bohumil

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

  2. Basilar-membrane response to multicomponent stimuli in chinchilla

    E-Print Network [OSTI]

    Kemnitz, Joseph

    Basilar-membrane response to multicomponent stimuli in chinchilla William S. Rhodea) and Alberto 53706 Received 28 November 2000; accepted for publication 11 April 2001 The response of chinchilla

  3. Information Security Office Logging Standard

    E-Print Network [OSTI]

    Alpay, S. Pamir

    All Approvals Review Date Reviewed By Name/Title Action (Reviewed or Approved) 6/01/2013 CISO Jason Pufahl, CISO Approved 6/01/2013 RMAC Risk Management Advisory Council Reviewed #12;Logging Standard 2 | P

  4. Log quality enhancement: A systematic assessment of logging company wellsite performance and log quality

    SciTech Connect (OSTI)

    Farnan, R.A.; Mc Hattie, C.M.

    1984-01-01T23:59:59.000Z

    To improve the monitoring of logging company performance, computer programs were developed to assess information en masse from log quality check lists completed on wellsite by the service company engineer and Phillips representative. A study of all logging jobs performed by different service companies for Phillips in Oklahoma (panhandle excepted) during 1982 enabled several pertinent and beneficial interpretations to be made. Company A provided the best tool and crew service. Company B incurred an excessive amount of lost time related to tool failure, in particular the neutron-density tool combination. Company C, although used only three times, incurred no lost time. With a reasonable data base valid conclusions were made pertaining, for example, to repeated tool malfunctions. The actual logs were then assessed for quality.

  5. Single Pass Multi-component Harvester

    SciTech Connect (OSTI)

    Reed Hoskinson; J. Richard Hess

    2004-08-01T23:59:59.000Z

    Abstract. In order to meet the U. S. government’s goal of supplementing the energy available from petroleum by increasing the production of energy from renewable resources, increased production of bioenergy has become one of the new goals of the United States government and our society. U.S. Executive Orders and new Federal Legislation have mandated changes in government procedures and caused reorganizations within the government to support these goals. The Biomass Research and Development Initiative is a multi-agency effort to coordinate and accelerate all U.S. Federal biobased products and bioenergy research and development. The Initiative is managed by the National Biomass Coordination Office, which is staffed by both the DOE and the USDA. One of the most readily available sources of biomass from which to produce bioenergy is an agricultural crop residue, of which straw from small grains is the most feasible residue with which to start. For the straw residue to be used its collection must be energy efficient and its removal must not impact the sustainability of the growing environment. In addition, its collection must be economically advantageous to the producer. To do all that, a single pass multi-component harvester system is most desirable. Results from our first prototype suggest that current combines probably do adequate threshing and that a separate chassis can be developed that does additional separation and that is economically feasible.

  6. LogRank: Summarizing Social Activity Logs Abhijith Kashyap

    E-Print Network [OSTI]

    Hristidis, Vagelis

    of Barack Obama (managed by his re-election campaign staff). Figure 1 shows a small selection of posts from network profile. With time, the activity logs of users, which record the sequences of social activities in most OSNs, records and displays users' activities (e.g., posts, status updates, comments). The Wall

  7. Detecting Botnets Through Log Correlation

    E-Print Network [OSTI]

    Al-Hammadi, Yousof

    2010-01-01T23:59:59.000Z

    Botnets, which consist of thousands of compromised machines, can cause significant threats to other systems by launching Distributed Denial of Service (SSoS) attacks, keylogging, and backdoors. In response to these threats, new effective techniques are needed to detect the presence of botnets. In this paper, we have used an interception technique to monitor Windows Application Programming Interface (API) functions calls made by communication applications and store these calls with their arguments in log files. Our algorithm detects botnets based on monitoring abnormal activity by correlating the changes in log file sizes from different hosts.

  8. LogOS: an Automatic Logging Framework for Service-Oriented Architectures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LogOS: an Automatic Logging Framework for Service-Oriented Architectures Stéphane Frénot Université our investigations on an automated log-based architec- ture called LogOS, focused on service component-based systems called LogOS, applied to OSGi environments. We believe that services such as found

  9. Ground states and dynamics of multi-component Bose-Einstein condensates

    E-Print Network [OSTI]

    Markowich, Peter A.

    Ground states and dynamics of multi-component Bose-Einstein condensates Weizhu Bao #3; Department) an external driven #12;eld for dynamics describing a multi-component Bose- Einstein condensate (BEC) at zero-component Bose-Einstein condensates. Key Words. Multi-component, Bose-Einstein condensate (BEC), Vector Gross

  10. Daily Log 2009 December 2009

    E-Print Network [OSTI]

    Boyce, Richard L.

    , camcorder and typing machine taken from unlocked cabinet. Report #: 2009-00644 Reported: 12/14/09 1813Daily Log 2009 December 2009 No Reportable Activity on 12/31/09 Report #: 2009-00652 Reported: 12/30/09 2106 Occurred: Same Incident: Parking Complaint Location: Woodcrest Parking Lot Disposition: Report

  11. Logging Equipment and Loren Kellogg

    E-Print Network [OSTI]

    and the control is passed on Automatic inhaul starts and the control is transferred again Photo Credit: KollerLogging Equipment and Systems Loren Kellogg Forest Engineering Resources and Management Oregon Equipment and Systems Presentation Outline · Overview of equipment and systems for thinning · Costs

  12. briefing paper Controlling Illegal Logging

    E-Print Network [OSTI]

    page1 briefing paper Controlling Illegal Logging: Implementation of the EU Timber Regulation Jon placing illegally harvested timber and timber products on the European market. It adopts a broad definition of `illegally harvested' and applies to timber both imported into and produced within the EU

  13. The Single Pass Multi-component Harvester

    SciTech Connect (OSTI)

    Reed Hoskinson; John R. Hess

    2004-08-01T23:59:59.000Z

    The authors are solely responsible for the content of this technical presentation. The technical presentation does not necessarily reflect the official position of the American Society of Agricultural Engineers (ASAE), and its printing and distribution does not constitute an endorsement of views which may be expressed. Technical presentations are not subject to the formal peer review process by ASAE editorial committees; therefore, they are not to be presented as refereed publications. Citation of this work should state that it is from an ASAE meeting paper. EXAMPLE: Author's Last Name, Initials. 2004. Title of Presentation. ASAE Paper No. 04xxxx. St. Joseph, Mich.: ASAE. For information about securing permission to reprint or reproduce a technical presentation, please contact ASAE at hq@asae.org or 269-429-0300 (2950 Niles Road, St. Joseph, MI 49085-9659 USA). Abstract. In order to meet the U. S. government’s goal of supplementing the energy available from petroleum by increasing the production of energy from renewable resources, increased production of bioenergy has become one of the new goals of the United States government and our society. U.S. Executive Orders and new Federal Legislation have mandated changes in government procedures and caused reorganizations within the government to support these goals. The Biomass Research and Development Initiative is a multi-agency effort to coordinate and accelerate all U.S. Federal biobased products and bioenergy research and development. The Initiative is managed by the National Biomass Coordination Office, which is staffed by both the DOE and the USDA. One of the most readily available sources of biomass from which to produce bioenergy is an agricultural crop residue, of which straw from small grains is the most feasible residue with which to start. For the straw residue to be used its collection must be energy efficient and its removal must not impact the sustainability of the growing environment. In addition, its collection must be economically advantageous to the producer. To do all that, a single pass multi-component harvester system is most desirable. Results from our first prototype suggest that current combines probably do adequate threshing and that a separate chassis can be developed that does additional separation and that is economically feasible.

  14. Chemical logging of geothermal wells

    DOE Patents [OSTI]

    Allen, Charles A. (Idaho Falls, ID); McAtee, Richard E. (Idaho Falls, ID)

    1981-01-01T23:59:59.000Z

    The presence of geothermal aquifers can be detected while drilling in geothermal formations by maintaining a chemical log of the ratio of the concentrations of calcium to carbonate and bicarbonate ions in the return drilling fluid. A continuous increase in the ratio of the concentrations of calcium to carbonate and bicarbonate ions is indicative of the existence of a warm or hot geothermal aquifer at some increased depth.

  15. Tucker Wireline Open Hole Wireline Logging

    SciTech Connect (OSTI)

    Milliken, M.

    2002-05-23T23:59:59.000Z

    The Tucker Wireline unit ran a suite of open hole logs right behind the RMOTC logging contractor for comparison purposes. The tools included Dual Laterolog, Phased Induction, BHC Sonic, and Density-Porosity.

  16. Geological well log analysis. Third ed

    SciTech Connect (OSTI)

    Pirson, S.J.

    1983-01-01T23:59:59.000Z

    Until recently, well logs have mainly been used for correlation, structural mapping, and quantitive evaluation of hydrocarbon bearing formations. This third edition of Geologic Well Log Analysis, however, describes how well logs can be used for geological studies and mineral exploration. This is done by analyzing well logs for numerous parameters and indices of significant mineral accumulation, primarily in sediments. Contents are: SP and Eh curves as redoxomorphic logs; sedimentalogical studies by log curve shapes; exploration for stratigraphic traps; continuous dipmeter as a structural tool; continuous dipmeter as a sedimentation tool; Paleo-facies logging and mapping; hydrogeology 1--hydrodynamics of compaction; hydrogeology 2--geostatic equilibrium; and hydrogeology 3--hydrodynamics of infiltration. Appendixes cover: Computer program for calculating the dip magnitude, azimuth, and the degree and orientation of the resistivity anisotrophy; a lithology computer program for calculating the curvature of a structure; and basic log analysis package for HP-41CV programmable calculator.

  17. Energy Citations Database (ECD) - Alerts Log On

    Office of Scientific and Technical Information (OSTI)

    Log On You must Log On to use the ECD Alerts. Alerts provide users with e-mail notification of updates to the ECD in specific areas of interest. If you wish to receive an Alert and...

  18. Multicomponent Adsorption and Chromatography with Uneven Saturation Capacities

    E-Print Network [OSTI]

    Gu, Tingyue

    Multicomponent Adsorption and Chromatography with Uneven Saturation Capacities Tingyue Gu, Gow, the extent of size exclusion is not the same for all the components. This often causes uneven adsorption capacity and vice versa. A study of size exclusion coupled with adsorption is a rel- atively new topic

  19. FUNCTIONAL ESTIMATION FOR A MULTICOMPONENT AGE REPLACEMENT MODEL

    E-Print Network [OSTI]

    L'Ecuyer, Pierre

    1 FUNCTIONAL ESTIMATION FOR A MULTICOMPONENT AGE REPLACEMENT MODEL Pierre L'Ecuyer, Benoit Martin, controlled by a replacement rule based on age thresholds. We show how to estimate the expected cost­ generative simulation, maintenance models, age replacement policies. #12; 2 L'ECUYER, MARTIN, AND V ' AZQUEZ

  20. FUNCTIONAL ESTIMATION FOR A MULTICOMPONENT AGE REPLACEMENT MODEL

    E-Print Network [OSTI]

    Vázquez-Abad, Felisa J.

    FUNCTIONAL ESTIMATION FOR A MULTICOMPONENT AGE REPLACEMENT MODEL Pierre L'Ecuyer, Benoit Martin, controlled by a replacement rule based on age thresholds. We show how to estimate the expected cost­ generative simulation, maintenance models, age replacement policies. #12; L'ECUYER, MARTIN, AND V ' AZQUEZ

  1. Boundary Integral Methods for Multicomponent Fluids and Multiphase Materials

    E-Print Network [OSTI]

    integral methods in two dimensions to multi-component fluid flows and multi-phase problems in materials, and more recently to multi-phase problems in materials science. By multi-fluid or multi-phase we mean systems where the constituitive properties of the fluid or material change abruptly at a dividing

  2. Boundary Integral Methods for Multicomponent Fluids and Multiphase Materials

    E-Print Network [OSTI]

    integral methods in two dimensions to multi­component fluid flows and multi­phase problems in materials, and more recently to multi­phase problems in materials science. By multi­fluid or multi­phase we mean systems where the constituitive properties of the fluid or material change abruptly at a dividing

  3. Modelling precipitation of niobium carbide in austenite: multicomponent diffusion, capillarity,

    E-Print Network [OSTI]

    Cambridge, University of

    Modelling precipitation of niobium carbide in austenite: multicomponent diffusion, capillarity, and coarsening N. Fujita and H. K. D. H. Bhadeshia The growth of niobium carbide in austenite involves the diffusion of both niobium and carbon. These elements diffuse at very different rates. A model is presented

  4. Indonesia to fight illegal logging Kurniawan Hari

    E-Print Network [OSTI]

    Indonesia to fight illegal logging Kurniawan Hari The government should set up a task force to deal with rampant illegal logging, mining and poaching, which are causing billions of dollars in state losses hearing on security affairs on Wednesday. Ermaya estimated the loss from illegal logging at US$3.5 billion

  5. Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia

    E-Print Network [OSTI]

    lease agreements and stop all logging permissions for these companies. The Russian Far East #12;ResultsCombating Illegal LoggingCombating Illegal Logging in Russia:in Russia: Case study ofCase study and not only `be aware' of illegal logging · G8-related political work #12;Primorsky region: 2000 Initial

  6. Combating Illegal LoggingCombating Illegal Logging in Russia:in Russia

    E-Print Network [OSTI]

    agreements and stop all logging permissions for these companies. The Russian Far East #12;Results: · directCombating Illegal LoggingCombating Illegal Logging in Russia:in Russia: Case study ofCase study aware' of illegal logging · G8-related political work #12;Primorsky region: 2000 Initial information

  7. Illegal logging threatens Congo's forests, global climate Illegal logging threatens Congo's forests, global climate

    E-Print Network [OSTI]

    contracts with logging companies covering more than 15 million hectares of forest," the report stated with logging companies instead giving villages gifts of salt and beer worth less than $100. "In a contextIllegal logging threatens Congo's forests, global climate Illegal logging threatens Congo's forests

  8. The Impact of the Russian Log Export Tariff on the Global Market for Logs and Lumber

    E-Print Network [OSTI]

    The Impact of the Russian Log Export Tariff on the Global Market for Logs and Lumber CINTRAFOR News is available on the web: http://www.cintrafor.org Russian Tariff continued on page 3 In This Issue: Director announced its plan to implement a series of log export tariffs designed to reduce the export of raw logs

  9. Illegal timber logging in Vietnam: Who profits from forest privatization connected with a logging ban?

    E-Print Network [OSTI]

    1 Illegal timber logging in Vietnam: Who profits from forest privatization connected with a logging the distribution of income from illegal timber logging in northern Vietnam. The Vietnamese government implemented because of the demand for timber in lowland markets, illegal timber logging still takes place in many

  10. Log interpretation of shaly sandstones

    E-Print Network [OSTI]

    Baker, Joel Foster

    1987-01-01T23:59:59.000Z

    and Gas, Arco Oil and Gas, and Sun Oil Companies for their contributions of cores, logs, and other valuable data. Their contributions were an immense help in formulating and supporting the ideas developed in my study. I also wish to express gratitute... of Water Saturation page . . 78 79 . . 81 . 87 91 93 VI CONCLUSIONS . 104 REFERENCES CITED APPENDIX I REESE INTRACOASTAL LAND ?2 DATA . 107 . . 111 APPENDIX II ARCO HANKAMER 630 ? 1 DATA 133 APPENDIX III SUN SMITH JR. ?8 DATA VITA 152 163...

  11. Mud Logging | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose BendMiasole IncMinutemanVistaZephyr)Mountain AirPeakMubadalaLogging

  12. Neutron Log | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns Jump to:Neppel Wind Power ProjectNeutron Log Jump to:

  13. Density Log | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE Facility DatabaseMichigan: Energy ResourcesDenair,Dennis Port,1987) |FishLog

  14. Request Log Closedl Date Yes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 % A PB 2 7 7 2 x>16 FOIA - Request Log

  15. Method for producing nanocrystalline multicomponent and multiphase materials

    DOE Patents [OSTI]

    Eastman, Jeffrey A. (Woodridge, IL); Rittner, Mindy N. (Des Plaines, IL); Youngdahl, Carl J. (Westmont, IL); Weertman, Julia R. (Evanston, IL)

    1998-01-01T23:59:59.000Z

    A process for producing multi-component and multiphase nanophase materials is provided wherein a plurality of elements are vaporized in a controlled atmosphere, so as to facilitate thorough mixing, and then condensing and consolidating the elements. The invention also provides for a multicomponent and multiphase nanocrystalline material of specified elemental and phase composition having component grain sizes of between approximately 1 nm and 100 nm. This material is a single element in combination with a binary compound. In more specific embodiments, the single element in this material can be a transition metal element, a non-transition metal element, a semiconductor, or a semi-metal, and the binary compound in this material can be an intermetallic, an oxide, a nitride, a hydride, a chloride, or other compound.

  16. Method for producing nanocrystalline multicomponent and multiphase materials

    DOE Patents [OSTI]

    Eastman, J.A.; Rittner, M.N.; Youngdahl, C.J.; Weertman, J.R.

    1998-03-17T23:59:59.000Z

    A process for producing multi-component and multiphase nanophase materials is provided wherein a plurality of elements are vaporized in a controlled atmosphere, so as to facilitate thorough mixing, and then condensing and consolidating the elements. The invention also provides for a multicomponent and multiphase nanocrystalline material of specified elemental and phase composition having component grain sizes of between approximately 1 nm and 100 nm. This material is a single element in combination with a binary compound. In more specific embodiments, the single element in this material can be a transition metal element, a non-transition metal element, a semiconductor, or a semi-metal, and the binary compound in this material can be an intermetallic, an oxide, a nitride, a hydride, a chloride, or other compound. 6 figs.

  17. Computation of liquid-liquid equilibrium in multicomponent electrolyte systems

    SciTech Connect (OSTI)

    Vianna, R.F.; d`Avila, S.G. [Universidade Estadual de Campinas (Brazil)

    1996-12-31T23:59:59.000Z

    A computational algorithm for predicting liquid-liquid equilibrium (LLE) data, based on a generalization of the maximum likelihood method applied to implicit constraints, is presented. The algorithm accepts multicomponent data and binary interaction parameters. A comparative study of the models NRTL and electrolyte-NRTL, used for estimating activity coefficients in a quaternary electrolyte system, is presented and discussed. Results show that both models give accurate predictions and the algorithm presents a good performance without convergence or initialization problems. This suggests that the basic NRTL model can be used for describing phase behavior in weak electrolyte systems and the procedure can be of great use for design and optimization of processes involving multicomponent electrolyte systems. 9 refs., 1 fig., 1 tab.

  18. Leak checker data logging system

    DOE Patents [OSTI]

    Gannon, Jeffrey C. (Arlington, TX); Payne, John J. (Waterman, IL)

    1996-01-01T23:59:59.000Z

    A portable, high speed, computer-based data logging system for field testing systems or components located some distance apart employs a plurality of spaced mass spectrometers and is particularly adapted for monitoring the vacuum integrity of a long string of a superconducting magnets such as used in high energy particle accelerators. The system provides precise tracking of a gas such as helium through the magnet string when the helium is released into the vacuum by monitoring the spaced mass spectrometers allowing for control, display and storage of various parameters involved with leak detection and localization. A system user can observe the flow of helium through the magnet string on a real-time basis hour the exact moment of opening of the helium input valve. Graph reading can be normalized to compensate for magnet sections that deplete vacuum faster than other sections between testing to permit repetitive testing of vacuum integrity in reduced time.

  19. Leak checker data logging system

    DOE Patents [OSTI]

    Gannon, J.C.; Payne, J.J.

    1996-09-03T23:59:59.000Z

    A portable, high speed, computer-based data logging system for field testing systems or components located some distance apart employs a plurality of spaced mass spectrometers and is particularly adapted for monitoring the vacuum integrity of a long string of a superconducting magnets such as used in high energy particle accelerators. The system provides precise tracking of a gas such as helium through the magnet string when the helium is released into the vacuum by monitoring the spaced mass spectrometers allowing for control, display and storage of various parameters involved with leak detection and localization. A system user can observe the flow of helium through the magnet string on a real-time basis hour the exact moment of opening of the helium input valve. Graph reading can be normalized to compensate for magnet sections that deplete vacuum faster than other sections between testing to permit repetitive testing of vacuum integrity in reduced time. 18 figs.

  20. Log-Sobolev inequalities for subelliptic operators

    E-Print Network [OSTI]

    Fabrice Baudoin

    2012-02-07T23:59:59.000Z

    Log-Sobolev inequalities for subelliptic operators. Fabrice Baudoin. Purdue University. Georgia Tech Probability Seminar. Based on a joint work with M.

  1. Dynamical evolution of active detached binaries on log Jo - log M diagram and contact binary formation

    E-Print Network [OSTI]

    Z. Eker; O. Demircan; S. Bilir; Y. Karatas

    2006-09-14T23:59:59.000Z

    Orbital angular momentum (Jo), systemic mass (M) and orbital period (P) distributions of chromospherically active binaries (CAB) and W Ursae Majoris (W UMa) systems were investigated. The diagrams of log Jo - log P, log M - log P and log Jo-log M were formed from 119 CAB and 102 W UMa stars. The log Jo-log M diagram is found to be most meaningful in demonstrating dynamical evolution of binary star orbits. A slightly curved borderline (contact border) separating the detached and the contact systems was discovered on the log Jo - log M diagram. Since orbital size (a) and period (P) of binaries are determined by their current Jo, M and mass ratio q, the rates of orbital angular momentum loss (dlog Jo/dt) and mass loss (dlog M/dt) are primary parameters to determine the direction and the speed of the dynamical evolution. A detached system becomes a contact system if its own dynamical evolution enables it to pass the contact border on the log Jo - log M diagram. Evolution of q for a mass loosing detached system is unknown unless mass loss rate for each component is known. Assuming q is constant in the first approximation and using the mean decreasing rates of Jo and M from the kinematical ages of CAB stars, it has been predicted that 11, 23 and 39 cent of current CAB stars would transform to W UMa systems if their nuclear evolution permits them to live 2, 4 and 6 Gyrs respectively.

  2. CORRUPTION AND ILLEGAL LOGGING IN THE WOOD

    E-Print Network [OSTI]

    Pettenella, Davide

    CORRUPTION AND ILLEGAL LOGGING IN THE WOOD PRODUCTS MARKET: the Italian experience in controlling Science 7 May 2004 Paper organization 1. State of the problem 2. Are Italian companies involved in deforestation and trade of illegal logging? 3. Which are the most affected countries? 4. Why do we need

  3. Coal-log pipeline system development

    SciTech Connect (OSTI)

    Liu, H.

    1991-12-01T23:59:59.000Z

    Project tasks include: (1) Perform the necessary testing and development to demonstrate that the amount of binder in coal logs can be reduced to 8% or lower to produce logs with adequate strength to eliminate breakage during pipeline transportation, under conditions experienced in long distance pipeline systems. Prior to conducting any testing and demonstration, grantee shall perform an information search and make full determination of all previous attempts to extrude or briquette coal, upon which the testing and demonstration shall be based. (2) Perform the necessary development to demonstrate a small model of the most promising injection system for coal-logs, and tests the logs produced. (3) Conduct economic analysis of coal-log pipeline, based upon the work to date. Refine and complete the economic model. (VC)

  4. Performance of Multi-Level and Multi-Component Compressed Bitmap Indexes

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    LBNL-60891 Performance of Multi-Level and Multi-Component Compressed Bitmap Indexes Kesheng Wu cardinality attributes when certain compression methods are applied. There are many different bitmap indexes subsets of compressed bitmap indexes that use multi-component and multi-level encodings. We combine

  5. A level set simulation of dendritic solidification of multi-component alloys

    E-Print Network [OSTI]

    Zabaras, Nicholas J.

    A level set simulation of dendritic solidification of multi-component alloys Lijian Tan, Nicholas Zabaras 1 Materials Process Design and Control Laboratory, Sibley School of Mechanical and Aerospace microstructure evolution in the solidification of multi-component alloys. Phase boundaries are tracked by solving

  6. ON THE LINEAR GROWTH OF THE SPLITANDMERGE SIMULATION TREE FOR A MULTICOMPONENT AGE REPLACEMENT MODEL

    E-Print Network [OSTI]

    Vázquez-Abad, Felisa J.

    ON THE LINEAR GROWTH OF THE SPLIT­AND­MERGE SIMULATION TREE FOR A MULTICOMPONENT AGE REPLACEMENT Functional estimation, split­and­merge tree, opti­ mization, maintenance models, age replacement poli­ cies Abstract We a consider a replacement policy based on age thresholds, for a multicomponent system. We want

  7. Numerical models of caldera deformation: Effects of multiphase and multicomponent hydrothermal fluid flow

    E-Print Network [OSTI]

    Numerical models of caldera deformation: Effects of multiphase and multicomponent hydrothermal studies addressing the effects of multiphase flow on crustal mechanics have been attempted. Recent numerical simulations of multiphase (liquid-gas), multicomponent (H2O­CO2) hydrothermal fluid flow

  8. Modulation of Drug Transport Properties by Multicomponent Diffusion in Surfactant Aqueous Solutions

    E-Print Network [OSTI]

    Annunziata, Onofrio

    Modulation of Drug Transport Properties by Multicomponent Diffusion in Surfactant Aqueous Solutions ReceiVed July 1, 2008 Diffusion coefficients of drug compounds are crucial parameters used for modeling diffusion. A multicomponent diffusion study on drug-surfactant-water ternary mixtures is reported here

  9. Multicomponent 'dark' cnoidal waves: stability and soliton asymptotes

    SciTech Connect (OSTI)

    Vysloukh, Victor A; Petnikova, V M; Rudenko, K V; Shuvalov, Vladimir V [International Laser Center, M. V. Lomonosov Moscow State University, Moscow (Russian Federation)

    1999-07-31T23:59:59.000Z

    The problem of steady-state propagation of several mutually incoherent optical waves - components of 'dark' multicomponent solitons and cnoidal waves - through a photorefractive crystal with a drift nonlinearity of the defocusing type is considered and solved. Analytical expressions are obtained for the distributions of the optical field between the components of the resulting solutions, containing up to three self-consistent components inclusive. It is shown that these solutions are stable and that their spatial structure is retained in mutual collisions and after stochastic perturbations of the intensity distributions. (this issue is dedicated to the memory of s a akhmanov)

  10. Fluid description of multi-component solar partially ionized plasma

    SciTech Connect (OSTI)

    Khomenko, E., E-mail: khomenko@iac.es; Collados, M.; Vitas, N. [Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife (Spain); Departamento de Astrofísica, Universidad de La Laguna, 38205 La Laguna, Tenerife (Spain); Díaz, A. [Departament de Física, Universitat de les Illes Balears, E-07122 Palma de Mallorca (Spain)

    2014-09-15T23:59:59.000Z

    We derive self-consistent formalism for the description of multi-component partially ionized solar plasma, by means of the coupled equations for the charged and neutral components for an arbitrary number of chemical species, and the radiation field. All approximations and assumptions are carefully considered. Generalized Ohm's law is derived for the single-fluid and two-fluid formalism. Our approach is analytical with some order-of-magnitude support calculations. After general equations are developed, we particularize to some frequently considered cases as for the interaction of matter and radiation.

  11. Logging-while-coring method and apparatus

    DOE Patents [OSTI]

    Goldberg, David S.; Myers, Gregory J.

    2007-01-30T23:59:59.000Z

    A method and apparatus for downhole coring while receiving logging-while-drilling tool data. The apparatus includes core collar and a retrievable core barrel. The retrievable core barrel receives core from a borehole which is sent to the surface for analysis via wireline and latching tool The core collar includes logging-while-drilling tools for the simultaneous measurement of formation properties during the core excavation process. Examples of logging-while-drilling tools include nuclear sensors, resistivity sensors, gamma ray sensors, and bit resistivity sensors. The disclosed method allows for precise core-log depth calibration and core orientation within a single borehole, and without at pipe trip, providing both time saving and unique scientific advantages.

  12. Sugarcane Log Turning Ltd. Business Plan

    E-Print Network [OSTI]

    ; for example, log homes inspired by the Olympic Games, and other homes that will complement the natural look as a business over time. SCLT believes that through working together with both the WLIB and AFRF, a prosperous

  13. Logging-while-coring method and apparatus

    DOE Patents [OSTI]

    Goldberg, David S. (New York, NY); Myers, Gregory J. (Cornwall, NY)

    2007-11-13T23:59:59.000Z

    A method and apparatus for downhole coring while receiving logging-while-drilling tool data. The apparatus includes core collar and a retrievable core barrel. The retrievable core barrel receives core from a borehole which is sent to the surface for analysis via wireline and latching tool The core collar includes logging-while-drilling tools for the simultaneous measurement of formation properties during the core excavation process. Examples of logging-while-drilling tools include nuclear sensors, resistivity sensors, gamma ray sensors, and bit resistivity sensors. The disclosed method allows for precise core-log depth calibration and core orientation within a single borehole, and without at pipe trip, providing both time saving and unique scientific advantages.

  14. Evaluation Of Chemical Geothermometers For Calculating Reservoir...

    Open Energy Info (EERE)

    For Calculating Reservoir Temperatures At Nevada Geothermal Power Plants Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Evaluation Of Chemical...

  15. Category:Silica Geothermometers | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here. Category:ConceptualGeothermal Regulatory

  16. Evaluation Of Chemical Geothermometers For Calculating Reservoir

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazelPennsylvania: Energy Resources(RECP) inEurico

  17. Automatic well log correlation using neural networks

    E-Print Network [OSTI]

    Habiballah, Walid Abdulrahim

    1991-01-01T23:59:59.000Z

    AUTOMATIC WELL LOG CORRELATION USING NEURAL NETWORKS A Thesis by WALID ABDULHAHIM HABIBALLAH Submitted to the Office of Graduate Studies of Texas AaM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... August 1991 Major Subject; Petroleum Engineering AUTOMATIC WELL LOG CORRELATION USING NEURAL NETWORKS A Thesis by WALID ABDULRAHIM HABIBALLAH Approved as to style and content by: R. A. St tzman (Chair of Committee) S. W. Poston (Member) R. R...

  18. Green Energy Resources Inc formerly New York International Log...

    Open Energy Info (EERE)

    International Log Lumber Company Jump to: navigation, search Name: Green Energy Resources Inc (formerly New York International Log & Lumber Company) Place: San Antonio, Texas...

  19. alfa activity log: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  20. abandoned logging roads: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  1. acoustic drillhole logging: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  2. annual logging symposium: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  3. activity log files: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  4. automatic log sorting: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  5. Busted: Illegal Logging in Kenya Daily Nation Newswire

    E-Print Network [OSTI]

    Busted: Illegal Logging in Kenya Daily Nation Newswire Police and Kenya Wildlife Service personnel many merchants were using expired permits. Eighteen people have been arrested for illegal logging

  6. Analysis of gas centrifuge cascade for separation of multicomponent isotopes and optimal feed position

    SciTech Connect (OSTI)

    Chuntong Ying; Hongjiang Wu; Mingsheng Zhou; Yuguang Nie; Guangjun Liu [Tsinghua Univ., Beijing (China)

    1997-10-01T23:59:59.000Z

    Analysis of the concentration distribution in a gas centrifuge cascade for separation of multicomponent isotope mixtures is different from that in a cascade for separation of two-component mixtures. This paper presents the governing equations for a multicomponent isotope separation cascade. Numerically predicted separation factors for the gas centrifuge cascade agree well with the experimental data. A theoretical optimal feed position is derived for a short square cascade for a two-component mixture in a close-separation case. The optimal feed position for a gas centrifuge cascade for separation of multicomponent mixture is discussed.

  7. Phase transition in multicomponent field theory at finite temperature

    E-Print Network [OSTI]

    Yukalov, V I

    2015-01-01T23:59:59.000Z

    Nuclear matter at finite temperature and barion density exhibits several phase transitions that could happen at the early stages of the Universe evolution and could be realized in heavy-ion or hadron-hadron collisions. Microscopic description of phase transitions is notoriously difficult because of the absence of small parameters. Here we present a general approach allowing to treat situations, when there are no small parameters. The approach is based on optimized perturbation theory and self-similar approximation theory. It allows, starting with divergent perturbation series in powers of an asymptotically small parameter, to construct expressions extrapolating asymptotic series to arbitrary values of the parameter, including its infinite limit. Examples of such approximants are: right root approximants, left root approximants, continued root approximants, exponential approximants, and factor approximants. The approach is illustrated by the phase transition of gauge symmetry breaking in a multicomponent field...

  8. Phase conversion dissipation in multi-component compact stars

    E-Print Network [OSTI]

    Mark G. Alford; Sophia Han; Kai Schwenzer

    2015-01-15T23:59:59.000Z

    We propose a mechanism for the damping of density oscillations in multi-component compact stars. The mechanism is the periodic conversion between different phases, i.e. the movement of the interface between them, induced by pressure oscillations in the star. The damping grows nonlinearly with the amplitude of the oscillation. We study in detail the case of r-modes in a hybrid star with a sharp interface, and we find that this mechanism is powerful enough to saturate the r-mode at very low saturation amplitude, of order $10^{-10}$, and is therefore likely to be the dominant r-mode saturation mechanism in hybrid stars with a sharp interface.

  9. SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE-163690-MS Synthetic, Geomechanical Logs for Marcellus Shale M. O. Eshkalak, SPE, S. D of production from shale gas reservoirs. In this study, synthetic geomechanical logs (Including following-driven models are developed that are capable of generating synthetic geomechanical logs from conventional logs

  10. Logging threatens Indonesia's biodiversity By Dianthus Saputra Estey in Jakarta

    E-Print Network [OSTI]

    is illegal logging. "So far, illegal logging is responsible for some 75% of the damage done to Indonesia's forests," he said during a press conference. "I think we have to stop blaming it all on just the illegal logging and start realising that both legal and illegal logging are responsible for our environmental

  11. Modelin combustion of multicomponent fuel droplets: formulation and application to transportation fuels

    E-Print Network [OSTI]

    Vittilapuram Subramanian, Kannan

    2006-04-12T23:59:59.000Z

    The quasi-steady, spherically symmetric combustion of multicomponent isolated fuel droplets has been modeled using modified Shvab-Zeldovich variable mechanism. Newly developed modified Shvab-Zeldovich equations have been used to describe the gas...

  12. Modelin combustion of multicomponent fuel droplets: formulation and application to transportation fuels 

    E-Print Network [OSTI]

    Vittilapuram Subramanian, Kannan

    2006-04-12T23:59:59.000Z

    The quasi-steady, spherically symmetric combustion of multicomponent isolated fuel droplets has been modeled using modified Shvab-Zeldovich variable mechanism. Newly developed modified Shvab-Zeldovich equations have been ...

  13. Analytical Solutions for Multicomponent, Two-Phase Flow in Porous Media with Double Contact Discontinuities

    E-Print Network [OSTI]

    Orr, F. M. Jr

    This paper presents the first instance of a double contact discontinuity in analytical solutions for multicomponent, two-phase flow in porous media. We use a three-component system with constant equilibrium ratios and fixed ...

  14. Structural investigations of hydroxylase proteins and complexes in bacterial multicomponent monooxygenase systems

    E-Print Network [OSTI]

    McCormick, Michael S. (Michael Scott)

    2008-01-01T23:59:59.000Z

    Bacterial multicomponent monooxgenases (BMMs) such as toluene/o-xylene monooxygenase (ToMO), phenol hydroxylase (PH), and soluble methane monooxygenase (sMMO) catalyze hydrocarbon oxidation reactions at a carboxylatebridged ...

  15. Effects of formulation conditions on micellar interactions and solution rheology in multi-component micellar systems

    E-Print Network [OSTI]

    Nachbar, Leslie Sarah

    2011-01-01T23:59:59.000Z

    Surfactants are crucial to the personal care industry due to their unique surface activity, cleansing, and self assembly properties. Typically, multi-component systems are used in order to maximize mildness, hard water ...

  16. Permeability extraction: A sonic log inversion

    SciTech Connect (OSTI)

    Akbar, N.; Kim, J.J. [Saudi Aramco, Dhahran (Saudi Arabia)

    1994-12-31T23:59:59.000Z

    In this paper the authors provide the missing important link between permeability and acoustic velocities by generating a permeability-dependent synthetic sonic log in a carbonate reservoir. The computations are based on Akbar`s theory that relates wave velocity to frequency, rock properties (e.g., lithology, permeability, and porosity), and fluid saturation and properties (viscosity, density, and compressibility). An inverted analytical expression of the theory is used to extract permeability from sonic velocity. The synthetic sonic and the computed permeability are compared with the observed sonic log and with plug permeability, respectively. The results demonstrate, as predicted by theory, that permeability can be related directly to acoustic velocities.

  17. Prospects for Reduced Impact Logging in Central African logging concessions Driss Ezzine de Blas *, Manuel Ruiz Perez 1

    E-Print Network [OSTI]

    prices and increasing demand (Karsenty, 2006a). As a fresh wave of logging companies have resumedProspects for Reduced Impact Logging in Central African logging concessions Driss Ezzine de Blas potential, future expansion and industrialisation of the Central African logging sector: ``Dans un avenir

  18. Universal Whitham hierarchy, dispersionless Hirota equations and multi-component KP hierarchy

    E-Print Network [OSTI]

    Kanehisa Takasaki; Takashi Takebe

    2007-08-31T23:59:59.000Z

    The goal of this paper is to identify the universal Whitham hierarchy of genus zero with a dispersionless limit of the multi-component KP hierarchy. To this end, the multi-component KP hierarchy is (re)formulated to depend on several discrete variables called ``charges''. These discrete variables play the role of lattice coordinates in underlying Toda field equations. A multi-component version of the so called differential Fay identity are derived from the Hirota equations of the $\\tau$-function of this ``charged'' multi-component KP hierarchy. These multi-component differential Fay identities have a well-defined dispersionless limit (the dispersionless Hirota equations). The dispersionless Hirota equations turn out to be equivalent to the Hamilton-Jacobi equations for the $S$-functions of the universal Whitham hierarchy. The differential Fay identities themselves are shown to be a generating functional expression of auxiliary linear equations for scalar-valued wave functions of the multi-component KP hierarchy.

  19. Advertise Subscribe Log in Register Advanced search

    E-Print Network [OSTI]

    Advertise Subscribe Log in Register Advanced search Home News Comment Special reports People power Europe does not need nuclear power to meet its future energy needs. Question of nuclear subsidies-reduction target would be better. Blowing away nuclear power Europe does not need nuclear power to meet its future

  20. April 27, 2010 Well Logging I

    E-Print Network [OSTI]

    Ito, Garrett

    wells and may be drilled to tap into water or oil/natural gas. Core samples are usually not taken4/26/2010 1 GG450 April 27, 2010 Well Logging I Today's material comes from p. 501-541 in the text book. Please read and understand all of this material! Drilling ­ Exploration and Scientific Holes

  1. Security Event and Log Management Service

    E-Print Network [OSTI]

    Security Event and Log Management Service: Comprehensive, Cost-effective Approach to Enhance Network Security and Security Data Management IBM Global Technology Services December 2007 #12;Executive Summary The economics of network security have changed. The high cost and complexity inherent in the use

  2. 2011 Daily Log Report #: 2011-00168

    E-Print Network [OSTI]

    Boyce, Richard L.

    the washing machine that he was utilizing. Report #: 2011-00160 Reported: 03/28/2011 2045 Occurred: Same2011 Daily Log March 2011 Report #: 2011-00168 Reported: 03/31/2011 1237 Occurred: 03/31/2011 1235 Incident: Medical Emergency Location: Outside of Student Union Disposition: Report--Closed Comments: Female

  3. INSPIRE and SPIRES Log File Analysis

    SciTech Connect (OSTI)

    Adams, Cole; /Wheaton Coll. /SLAC

    2012-08-31T23:59:59.000Z

    SPIRES, an aging high-energy physics publication data base, is in the process of being replaced by INSPIRE. In order to ease the transition from SPIRES to INSPIRE it is important to understand user behavior and the drivers for adoption. The goal of this project was to address some questions in regards to the presumed two-thirds of the users still using SPIRES. These questions are answered through analysis of the log files from both websites. A series of scripts were developed to collect and interpret the data contained in the log files. The common search patterns and usage comparisons are made between INSPIRE and SPIRES, and a method for detecting user frustration is presented. The analysis reveals a more even split than originally thought as well as the expected trend of user transition to INSPIRE.

  4. Toxic species evolution from guayule fireplace logs

    E-Print Network [OSTI]

    Soderman, Kristi Lee

    1988-01-01T23:59:59.000Z

    and cellulosic material from bagasse are generated as co-products of rubber extraction. The cellulosic material uses which are favored at this time require combustion. Bagasse affords the potential for use as biomass fuel in the production of process steam... of chromium, if present in the hexavalent state, no unusually toxic constituents were found in the smoke particulates, gaseous state or as condensible liquids for flaming and smoldering combustion of guayule fireplace logs. Butylhydroxytoluene (BHT), a...

  5. Chiral gravity, log gravity, and extremal CFT

    SciTech Connect (OSTI)

    Maloney, Alexander [Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada); Song Wei [Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190 (China); Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States); Strominger, Andrew [Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States)

    2010-03-15T23:59:59.000Z

    We show that the linearization of all exact solutions of classical chiral gravity around the AdS{sub 3} vacuum have positive energy. Nonchiral and negative-energy solutions of the linearized equations are infrared divergent at second order, and so are removed from the spectrum. In other words, chirality is confined and the equations of motion have linearization instabilities. We prove that the only stationary, axially symmetric solutions of chiral gravity are BTZ black holes, which have positive energy. It is further shown that classical log gravity--the theory with logarithmically relaxed boundary conditions--has finite asymptotic symmetry generators but is not chiral and hence may be dual at the quantum level to a logarithmic conformal field theories (CFT). Moreover we show that log gravity contains chiral gravity within it as a decoupled charge superselection sector. We formally evaluate the Euclidean sum over geometries of chiral gravity and show that it gives precisely the holomorphic extremal CFT partition function. The modular invariance and integrality of the expansion coefficients of this partition function are consistent with the existence of an exact quantum theory of chiral gravity. We argue that the problem of quantizing chiral gravity is the holographic dual of the problem of constructing an extremal CFT, while quantizing log gravity is dual to the problem of constructing a logarithmic extremal CFT.

  6. Acoustic Waveform Logging - Advances In Theory And Application

    E-Print Network [OSTI]

    Cheng, C. H.

    Full-waveform acoustic logging has made significant advances in both theory and application in recent years, and these advances have greatly increased the capability of log analysts to measure the physical properties of ...

  7. Effects of borehole stability on well log data

    E-Print Network [OSTI]

    Grandi Karam, Samantha, 1973-

    2003-01-01T23:59:59.000Z

    In this thesis we analyze the effects of borehole irregularities on well logs and develop methods to obtain reliable formation properties from such logs. Data from a well in eastern Venezuela are analysed. Borehole ...

  8. Well Log Data At Blue Mountain Geothermal Area (Fairbank & Niggemann...

    Open Energy Info (EERE)

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Well Log Data At Blue Mountain Geothermal Area (Fairbank & Niggemann, 2004) Exploration Activity Details...

  9. Pressure Temperature Log At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) Exploration Activity...

  10. Outcrop gamma-ray logging applied to subsurface petroleum geology

    SciTech Connect (OSTI)

    Slatt, R.M.; Borer, J.M.; Horn, B.W. [Colorado School of Mines, Golden, CO (United States)] [and others

    1995-10-01T23:59:59.000Z

    Developing a gamma-ray log profile of an outcrop with a hand-held scintillometer has many applications to subsurface petroleum geology. The outcrop gamma-ray log provides a readily understandable bridge between what is observed in outcrop and what is to be interpreted on well logs and seismic records. Several examples are presented in this paper that demonstrate major applications. An outcrop from the Cretaceous Mesaverde Group in Colorado provides an excellent example of the use of outcrop gamma-ray logs to better visualize spatial variability of depositional settings for improved well log correlations. Out crops from the Cretaceous Almond Formation, Niobrara Formation, and Graneros Shale in Colorado serve as examples of outcrop gamma-ray logging used to correlate outcrops with their subsurface equivalents for improved lithologic and stratigraphic interpretation of well logs. Outcrops of the Cretaceous Sharon Springs Member of the Pierre Shale in Colorado and the Eocene Green River Formation in Wyoming provide examples of the application of outcrop-gamma ray logging to identify and characterize organic-rich shales in outcrops and on well logs. Outcrops of the Pennsylvanian Jackfork Formation in Arkansas demonstrate the use of outcrop logging to yield improved interpretation of reservoir quality on well logs and for one- and two-dimensional seismic modeling. An outcrop of Precambrian and Cambro-Ordovician rocks from Algeria provides an example of outcrop logging to recognize unconformities and other major surfaces on well logs. An outcrop of the Niobrara Formation in Colorado is used as an example for improved understanding of horizontal gamma-ray log response. The example logs presented are all drived with a hand-held scintillometer. This technique is simple, quick, and relatively inexpensive, so is recommended for any outcrop work that is intended to be applied t;o subsurface well logs or seismic interpretation.

  11. ADL Logging Architecture JIGI determines all server addresses from

    E-Print Network [OSTI]

    Janée, Greg

    ADL Logging Architecture JIGI logging server JIGI determines all server addresses from from the authentication server) JIGI user authentication server Note: JIGI authentication is logically; if the former, server adds sequence numbers to preserve record order (ODBC or other) middleware logging server

  12. NGO briefing paper on combating illegal logging and related trade

    E-Print Network [OSTI]

    NGO briefing paper on combating illegal logging and related trade Proposed Regulation concerning the placing of timber and timber products on the EU market Illegal logging poses a significant threat, and undermines sustainable forest management and development. Illegal logging has been documented

  13. Interpreting multicomponent seismic data in the Gulf of Mexico for shallow sedimentary properties: methodology and case history

    E-Print Network [OSTI]

    Texas at Austin, University of

    OTC 15118 Interpreting multicomponent seismic data in the Gulf of Mexico for shallow sedimentary of multicomponent data analysis for the detection of gas hydrate prospects in the northern Gulf of Mexico. Methane and pressure conditions in the region. In many regions of North America, including the southern Gulf of Mexico

  14. Test results of a corrosion logging technique using electromagnetic thickness and pipe analysis logging tools

    SciTech Connect (OSTI)

    Iliyan, I.S.; Brown, G.A.; Cotton, W.J. Jr.

    1983-04-01T23:59:59.000Z

    Recent innovations in subsurface corrosion practices of the Arabian American Oil Co. (ARAMCO) have reduced logging and workover costs substantially and have permitted the detection of corrosion in the outer string of two concentric casing strings. At the request of ARAMCO, Schlumberger conducted test under both simulated and field conditions. Results showed that the data required to evaluate casing corrosion in a 7-in.X9 5/8-in. completion can be obtained during a single logging run using a 21.6-in. coil spacing electromagnetic thickness tool (ETT-A /SUP TM/ ) sonde (as opposed to two runs with 17.6-in. and 21.6-in. sondes previously used). In addition, corrosion of the outer string of 9 5/8-in. or 13 3/8-in. casing can be detected by using the results of the ETT-A logs and pipe-analysis tool (PAT) logs or caliper logs. To date, the application of this technique has been very successful in ARAMCO's operations.

  15. The Borneo Project : Indonesia Fails to Stop Illegal Logging, Report Says Indonesia Fails to Stop Illegal Logging, Report Says

    E-Print Network [OSTI]

    The Borneo Project : Indonesia Fails to Stop Illegal Logging, Report Says Indonesia Fails to Stop Illegal Logging, Report Says by Irwan Firdaus, The Associated Press January 15th, 2003 JAKARTA, Indonesia -- Corruption in Indonesia's police and military has contributed to a surge in illegal logging that has

  16. Log amplifier with pole-zero compensation

    DOE Patents [OSTI]

    Brookshier, W.

    1985-02-08T23:59:59.000Z

    A logarithmic amplifier circuit provides pole-zero compensation for improved stability and response time over 6-8 decades of input signal frequency. The amplifer circuit includes a first operational amplifier with a first feedback loop which includes a second, inverting operational amplifier in a second feedstock loop. The compensated output signal is provided by the second operational amplifier with the log elements, i.e., resistors, and the compensating capacitors in each of the feedback loops having equal values so that each break point is offset by a compensating break point or zero.

  17. Category:Caliper Log | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainableCSLInformationMissouri:Catalyst2-Mpage?Brophypage containsLog

  18. Category:Mud Logging | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here. Category:Conceptual ModelLists forMercury Vapor page?Logging page?

  19. Pressure Temperature Log | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,Pillar Group BV Jump to: navigation,Power RentalAreas-|Log Jump to: navigation,

  20. Vertical Flowmeter Logging | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown of Ladoga,planningFlowmeter Logging Jump to: navigation, search OpenEI

  1. Dual excitation acoustic paramagnetic logging tool

    DOE Patents [OSTI]

    Vail, III, William B. (Bothell, WA)

    1989-01-01T23:59:59.000Z

    New methods and apparatus are disclosed which allow measurement of the presence of oil and water in gelogical formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleous present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be preformed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described.

  2. Dual excitation acoustic paramagnetic logging tool

    DOE Patents [OSTI]

    Vail, W.B. III.

    1989-02-14T23:59:59.000Z

    New methods and apparatus are disclosed which allow measurement of the presence of oil and water in geological formations using a new physical effect called the Acoustic Paramagnetic Logging Effect (APLE). The presence of petroleum in formation causes a slight increase in the earth's magnetic field in the vicinity of the reservoir. This is the phenomena of paramagnetism. Application of an acoustic source to a geological formation at the Larmor frequency of the nucleons present causes the paramagnetism of the formation to disappear. This results in a decrease in the earth's magnetic field in the vicinity of the oil bearing formation. Repetitively frequency sweeping the acoustic source through the Larmor frequency of the nucleons present (approx. 2 kHz) causes an amplitude modulation of the earth's magnetic field which is a consequence of the APLE. The amplitude modulation of the earth's magnetic field is measured with an induction coil gradiometer and provides a direct measure of the amount of oil and water in the excitation zone of the formation. The phase of the signal is used to infer the longitudinal relaxation times of the fluids present, which results in the ability in general to separate oil and water and to measure the viscosity of the oil present. Such measurements may be performed in open boreholes and in cased well bores. The Dual Excitation Acoustic Paramagnetic Logging Tool employing two acoustic sources is also described. 6 figs.

  3. Dewarless Logging Tool - 1st Generation

    SciTech Connect (OSTI)

    HENFLING,JOSEPH A.; NORMANN,RANDY A.

    2000-08-01T23:59:59.000Z

    This report focuses on Sandia National Laboratories' effort to create high-temperature logging tools for geothermal applications without the need for heat shielding. One of the mechanisms for failure in conventional downhole tools is temperature. They can only survive a limited number of hours in high temperature environments. For the first time since the evolution of integrated circuits, components are now commercially available that are qualified to 225 C with many continuing to work up to 300 C. These components are primarily based on Silicon-On-Insulator (SOI) technology. Sandia has developed and tested a simple data logger based on this technology that operates up to 300 C with a few limiting components operating to only 250 C without thermal protection. An actual well log to 240 C without shielding is discussed. The first prototype high-temperature tool measures pressure and temperature using a wire-line for power and communication. The tool is based around the HT83C51 microcontroller. A brief discussion of the background and status of the High Temperature Instrumentation program at Sandia, objectives, data logger development, and future project plans are given.

  4. Shippers in Indonesia fight decree on illegal logging Shippers in Indonesia fight decree on illegal logging

    E-Print Network [OSTI]

    Shippers in Indonesia fight decree on illegal logging Shippers in Indonesia fight decree on illegal on enforcing a new decree on the transportation of illegal timber. The Indonesian National Ship-owners Association says that the Indonesian government's proposal to impound ships carrying illegal timber would

  5. Annual Logging Symposium, June 22-26, 2013 MULTIDETECTOR LWD SIGMA LOGGING PRINCIPLES,

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    different detectors, environmental effects, and best practices. We analyze Monte Carlo simulations and test. A multidetector Logging-While-Drilling (LWD) Sigma design provides insight into the presence of invasion for a wide range of formations under typical LWD drilling conditions. Finally, a comparison is made of LWD

  6. New Structural Model for Multicomponent Pile Cross Sections under Axial Load

    E-Print Network [OSTI]

    Horvath, John S.

    New Structural Model for Multicomponent Pile Cross Sections under Axial Load John S. Horvath, Ph.D., P.E., M.ASCE1 Abstract: Piles composed of more than one material in their cross section have been used for more than 100 years. Originally this was limited to driven steel shell or pipe piles filled

  7. Integrated Column Designs for Minimum Energy and Entropy Requirements in Multicomponent Distillation

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Distillation Ivar J. Halvorsen1 and Sigurd Skogestad Norwegian University of Science and Technology, Department at the Topical conference on Separations Technology, Session 23 - Distillation Modeling and Processes II. 2001 Column Designs for Minimum Energy and Entropy Requirements in Multicomponent Distillation Ivar J

  8. MODELING OF MICROSTRUCTURE EVOLUTION IN MULTICOMPONENT ALLOYS USING THE LEVEL SET METHOD WITH ADAPTIVE MESH

    E-Print Network [OSTI]

    Zabaras, Nicholas J.

    MODELING OF MICROSTRUCTURE EVOLUTION IN MULTICOMPONENT ALLOYS USING THE LEVEL SET METHOD Sibley School of Mechanical and Aerospace Engineering 188 Frank H. T. Rhodes Hall Cornell University-component alloy, Microstructure, Solidification. A level set method combining features of front tracking methods

  9. Particle dissolution and cross-diffusion in multi-component alloys F.J. Vermolen a,

    E-Print Network [OSTI]

    Vuik, Kees

    , HSLA steels, all engineer- ing steels, as well as aluminium extrusion alloys. Although precipitateParticle dissolution and cross-diffusion in multi-component alloys F.J. Vermolen a, *, C. Vuik into account the influences of cross-diffusion, in multi- component alloys is proposed and analyzed using

  10. Integrated Simulations for Multi-Component Analysis of Gas Turbines : RANS Boundary Conditions

    E-Print Network [OSTI]

    Kim, Sangho

    More recently the coupling method has also been applied to a Pratt & Whitney gas turbine.7 The RANSIntegrated Simulations for Multi-Component Analysis of Gas Turbines : RANS Boundary Conditions 94305, U.S.A The aero-thermal computation of the flow path of an entire gas turbine engine can

  11. Benchmarking a Visual-Basic based multi-component one-dimensional reactive transport modeling tool

    E-Print Network [OSTI]

    Clement, Prabhakar

    Benchmarking a Visual-Basic based multi-component one-dimensional reactive transport modeling tool of a comprehensive numerical modeling tool, RT1D, which can be used for simulating biochemical and geochemical, and it does not require any additional software tools. The code can be easily adapted by others for simulating

  12. Minimum Energy Consumption in Multicomponent Distillation. 3. More Than Three Products and Generalized Petlyuk Arrangements

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Minimum Energy Consumption in Multicomponent Distillation. 3. More Than Three Products products (where normally M e N). We derive the expressions for a generalized extended Pet- lyuk arrangement for the generalized Pet- lyuk column with more than three products. The Vmin diagram was presented in part 1

  13. A multicomponent coupled model of glacier hydrology 1. Theory and synthetic examples

    E-Print Network [OSTI]

    Flowers, Gwenn

    A multicomponent coupled model of glacier hydrology 1. Theory and synthetic examples Gwenn E; published 12 November 2002. [1] Basal hydrology is acknowledged as a fundamental control on glacier dynamics of existing basal hydrology models is the treatment of the glacier bed as an isolated system. We present

  14. Computational Modeling of Plasmon-Enhanced Light Absorption in a Multicomponent Dye Sensitized Solar Cell

    E-Print Network [OSTI]

    can be mitigated by using dye-sensitized solar cells (DSSCs),4 which use organic dye molecules coated by nearly an order of magnitude through plasmon enhanced absorption by the dye.10 This particular solar cellComputational Modeling of Plasmon-Enhanced Light Absorption in a Multicomponent Dye Sensitized

  15. Multicomponent Transport of Sulfate in a Goethite-Silica Sand System

    E-Print Network [OSTI]

    Sparks, Donald L.

    Multicomponent Transport of Sulfate in a Goethite-Silica Sand System at Variable pH and Ionic of protons and sulfate on goethite and silica were used in combination with a one-dimensional mass-transport model to predict the transport of sulfate at variable pH and ionic strength in a goethite-silica system

  16. Application of the Cell Potential Method To Predict Phase Equilibria of Multicomponent Gas Hydrate Systems

    E-Print Network [OSTI]

    Bazant, Martin Z.

    Application of the Cell Potential Method To Predict Phase Equilibria of Multicomponent Gas Hydrate the first documentation nearly two centuries ago,2 natural gas clathrate-hydrates, called clathrates, have at understanding and avoiding clathrate formation. More recently, natural gas hydrates have been proposed

  17. Log-Linear Models, MEMMs, and CRFs Michael Collins

    E-Print Network [OSTI]

    Yang, Junfeng

    labeled examples, {(xi, yi)}n i=1. The log-likelihood function is L(w) = n i=1 log p(yi|xi; w) We can think of L(w) as being a function that for a given w measures how well w explains the labeled examples a high value for L(w). The maximum-likelihood estimates are w = arg max wRd n i=1 log p(yi|xi; w

  18. Resistivity Log At Valles Caldera - Redondo Geothermal Area ...

    Open Energy Info (EERE)

    Et Al., 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Resistivity Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al., 1987)...

  19. Density Log At Valles Caldera - Redondo Geothermal Area (Rowley...

    Open Energy Info (EERE)

    Rowley, Et Al., 1987) Exploration Activity Details Location Valles Caldera - Redondo Geothermal Area Exploration Technique Density Log Activity Date 1984 - 1984 Usefulness not...

  20. Neutron Log At Valles Caldera - Redondo Geothermal Area (Rowley...

    Open Energy Info (EERE)

    1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Neutron Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al., 1987) Exploration...

  1. Caliper Log At Valles Caldera - Redondo Geothermal Area (Rowley...

    Open Energy Info (EERE)

    Rowley, Et Al., 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Caliper Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al.,...

  2. Pressure Temperature Log At Valles Caldera - Redondo Geothermal...

    Open Energy Info (EERE)

    Pressure Temperature Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et Al., 1987) Exploration Activity Details Location Valles Caldera - Redondo Geothermal Area...

  3. Portable GPS Baseband Logging Morgan Quigley, Stanford University

    E-Print Network [OSTI]

    Ng, Andrew Y.

    Portable GPS Baseband Logging Morgan Quigley, Stanford University Pieter Abbeel, Stanford Dennis Akos, University of Colorado Andrew Y. Ng, Stanford University BIOGRAPHY Morgan Quigley and Pieter

  4. Portable GPS Baseband Logging Morgan Quigley, Stanford University

    E-Print Network [OSTI]

    Stanford University

    Portable GPS Baseband Logging Morgan Quigley, Stanford University Pieter Abbeel, Stanford Dennis Akos, University of Colorado Andrew Y. Ng, Stanfod University BIOGRAPHY Morgan Quigley and Pieter

  5. Geophysical logs from water wells in the Yakima area, Washington

    SciTech Connect (OSTI)

    Biggane, J.H.

    1983-01-01T23:59:59.000Z

    The logs include: natural gamma, gamma gamma, neutron neutron, neutron gamma, caliper, fluid temperature, fluid resistivity, wall resistivity, spontaneous potential, and flow meter.

  6. Knowledge-based stratigraphic well-log correlation

    E-Print Network [OSTI]

    Denton, Michael A.

    1990-01-01T23:59:59.000Z

    represents the formations, and new rules for the knowledge-base that can correlate formations in reservoirs with secondary stratification. This expert system has correlated ovei' 3, 500 ft. of well-log data from three different types of rock sequences... inspirational support. TABLE OF CONTENTS Page ABSTRACT nl DEDICATION ACKNOWLEDGEMENT TABLE OF CONTENTS LIST OF TABLES x1 LIST OF FIGURES xl1 CHAPTER I ? INTRODUCTION 1. 1 Well-Logs 1. 2 Stratigraphic Well-Log Correlation . 1. 3 Well-Log Correlation...

  7. Well Log Data At Valles Caldera - Redondo Geothermal Area (Shevenell...

    Open Energy Info (EERE)

    to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Well Log Data At Valles Caldera - Redondo Geothermal Area (Shevenell, Et Al., 1988) Exploration...

  8. Compilation of network activity logs on a DECnet host

    SciTech Connect (OSTI)

    George, M.

    1987-07-01T23:59:59.000Z

    Log files are created for all incoming connection requests on a DECnet host. These log files contain connection data such as the requesting source, destination, and throughput. The procedures (referred to as collect software) outlined in this report, were written to collect these log files, to extract the essential information, and to condense the data into one-line records. The two VAX/VMS systems at SNLA that currently run these procedures compile network transaction logs on a weekly basis. This document is intended for VAX/VMS system managers who wish to install, and possibly modify, this software.

  9. Log-normal distribution for correlators in lattice QCD?

    E-Print Network [OSTI]

    Thomas DeGrand

    2012-04-20T23:59:59.000Z

    Many hadronic correlators used in spectroscopy calculations in lattice QCD simulations appear to show a log-normal distribution at intermediate time separations.

  10. Partnership Logging Accidents Cornelis de Hoop, LA Forest Products Lab

    E-Print Network [OSTI]

    Partnership Logging Accidents · by · Cornelis de Hoop, LA Forest Products Lab · Albert Lefort Agreement · 1998 & 1999 Accident Reports · 25 injuries reported · 185 loggers signed up · 8 deaths 1999

  11. PHYSICAL REVIEW B 85, 155101 (2012) Electronic properties of layered multicomponent wide-band-gap oxides: A combinatorial approach

    E-Print Network [OSTI]

    Medvedeva, Julia E.

    devices including solar cells, smart windows, and flat panel displays, and they also find application as heating, antistatic, and optical coatings (for select reviews, see Refs. 1­7). Multicomponent TCOs

  12. Multicomponent seismic data, combining P-wave and converted P-to-SV wave (C-wave) wavefields, provide inde-

    E-Print Network [OSTI]

    Texas at Austin, University of

    (fast and slow) with differing polarization. The 4C, 3D ocean-bottom cable (OBC) multicomponent seismic and stratigraphic features within the gas-charged intervals. C- waves (Figure 3) penetrate these P-wave wipeout

  13. Explicit Expressions for Moments of Log Normal Order Statistics

    E-Print Network [OSTI]

    Sidorov, Nikita

    Explicit Expressions for Moments of Log Normal Order Statistics Saralees Nadarajah First version: 31 December 2006 Research Report No. 23, 2006, Probability and Statistics Group School of Mathematics, The University of Manchester #12;Explicit Expressions for Moments of Log Normal Order Statistics by Saralees

  14. Preprocessing and Mining Web Log Data for Web Personalization

    E-Print Network [OSTI]

    Ruggieri, Salvatore

    Preprocessing and Mining Web Log Data for Web Personalization M. Baglioni1 , U. Ferrara2 , A. Romei/26, 56017 S. Martino Ulmiano (PI) Italy ferrara@ksolutions.it Abstract. We describe the web usage mining behaviour of a web site users. The models are inferred from the access logs of a web server by means of data

  15. Illegal Logging and Illegal Activites in the Forestry Sector

    E-Print Network [OSTI]

    Illegal Logging and Illegal Activites in the Forestry Sector : Overview and Possible Issues, China #12;Quebec Wood Export Bureau Why Illegal logging and illegal activities ? ­ Threats for our export members companies ? · Unfair competition ? · New trade barriers ? Literature review ­ Data

  16. Survival Analysis of Click Logs Si-Chi Chin

    E-Print Network [OSTI]

    Street, Nick

    Survival Analysis of Click Logs Si-Chi Chin Information Science The University of Iowa Iowa City and Subject Descriptors: H.4 [Information Systems Applications]: Miscellaneous General Terms: Theory Keywords: Clickthrough Logs, Kaplan-Meier Survival Anal- ysis, Click Curve Visualization 1. INTRODUCTION AND DATASET

  17. Head-on collision of ion-acoustic solitary waves in multicomponent plasmas with positrons

    SciTech Connect (OSTI)

    El-Shamy, E. F.; Sabry, R. [Department of Physics, Theoretical Physics Group, Faculty of Science, Mansoura University, Damietta-Branch, New Damietta 34517, Damietta (Egypt); Moslem, W. M. [Department of Physics, Faculty of Science, Port Said University, Port Said (Egypt); Shukla, P. K. [Institut fuer Theoretische Physik IV, Fakultaet fuer Physik und Astronomie, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

    2010-08-15T23:59:59.000Z

    The head-on collision between two ion-acoustic solitary waves in an unmagnetized multicomponent plasma consisting of hot ions, hot positrons, and two-electron temperature distributions is investigated using the extended Poincare-Lighthill-Kuo method. The Kortwege-de Vries equations and the analytical phase shifts after the head-on collision of two solitary waves in this multicomponent plasma are obtained. The effects of two different types of isothermal electrons, the ratio of the hot ion temperature to the effective temperature, the ratio of the effective temperature to the positron temperature, the ratio of the number density of positrons to that of electrons species, and the physical processes (either isothermal or adiabatic) on the phase shifts are studied. It is found that these parameters can significantly influence the phase shifts of the solitons. The relevance of this investigation to space and laboratory plasmas is pointed out.

  18. Self-assembly of multicomponent structures in and out of equilibrium

    E-Print Network [OSTI]

    Stephen Whitelam; Rebecca Schulman; Lester Hedges

    2012-04-17T23:59:59.000Z

    Theories of phase change and self-assembly often invoke the idea of a `quasiequilibrium', a regime in which the nonequilibrium association of building blocks results nonetheless in a structure whose properties are determined solely by an underlying free energy landscape. Here we study a prototypical example of multicomponent self-assembly, a one-dimensional fiber grown from red and blue blocks. If the equilibrium structure possesses compositional correlations different from those characteristic of random mixing, then it cannot be generated without error at any finite growth rate: there is no quasiequilibrium regime. However, by exploiting dynamic scaling, structures characteristic of equilibrium at one point in phase space can be generated, without error, arbitrarily far from equilibrium. Our results thus suggest a `nonperturbative' strategy for multicomponent self-assembly in which the target structure is, by design, not the equilibrium one.

  19. Transport properties of multicomponent thermal plasmas: Grad method versus Chapman-Enskog method

    SciTech Connect (OSTI)

    Porytsky, P. [Institute for Nuclear Research, 03680 Kyiv (Ukraine); Krivtsun, I.; Demchenko, V. [Paton Welding Institute, 03680 Kyiv (Ukraine); Reisgen, U.; Mokrov, O.; Zabirov, A. [RWTH Aachen University, ISF-Welding and Joining Institute, 52062 Aachen (Germany); Gorchakov, S.; Timofeev, A.; Uhrlandt, D. [Leibniz Institute for Plasma Science and Technology (INP Greifswald), 17489 Greifswald (Germany)

    2013-02-15T23:59:59.000Z

    Transport properties (thermal conductivity, viscosity, and electrical conductivity) for multicomponent Ar-Fe thermal plasmas at atmospheric pressure have been determined by means of two different methods. The transport coefficients set based on Grad's method is compared with the data obtained when using the Chapman-Enskog's method. Results from both applied methods are in good agreement. It is shown that the Grad method is suitable for the determination of transport properties of the thermal plasmas.

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

    E-Print Network [OSTI]

    Harwell, Jeffrey Harry

    1979-01-01T23:59:59.000Z

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

  1. Mechanism reduction for multicomponent surrogates: A case study using toluene reference fuels

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

    Niemeyer, Kyle E.; Sung, Chih-Jen

    2014-11-01T23:59:59.000Z

    Strategies and recommendations for performing skeletal reductions of multicomponent surrogate fuels are presented, through the generation and validation of skeletal mechanisms for a three-component toluene reference fuel. Using the directed relation graph with error propagation and sensitivity analysis method followed by a further unimportant reaction elimination stage, skeletal mechanisms valid over comprehensive and high-temperature ranges of conditions were developed at varying levels of detail. These skeletal mechanisms were generated based on autoignition simulations, and validation using ignition delay predictions showed good agreement with the detailed mechanism in the target range of conditions. When validated using phenomena other than autoignition, such as perfectly stirred reactor and laminar flame propagation, tight error control or more restrictions on the reduction during the sensitivity analysis stage were needed to ensure good agreement. In addition, tight error limits were needed for close prediction of ignition delay when varying the mixture composition away from that used for the reduction. In homogeneous compression-ignition engine simulations, the skeletal mechanisms closely matched the point of ignition and accurately predicted species profiles for lean to stoichiometric conditions. Furthermore, the efficacy of generating a multicomponent skeletal mechanism was compared to combining skeletal mechanisms produced separately for neat fuel components; using the same error limits, the latter resulted in a larger skeletal mechanism size that also lacked important cross reactions between fuel components. Based on the present results, general guidelines for reducing detailed mechanisms for multicomponent fuels are discussed.

  2. Mechanism reduction for multicomponent surrogates: A case study using toluene reference fuels

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

    Niemeyer, Kyle E.; Sung, Chih-Jen

    2014-11-01T23:59:59.000Z

    Strategies and recommendations for performing skeletal reductions of multicomponent surrogate fuels are presented, through the generation and validation of skeletal mechanisms for a three-component toluene reference fuel. Using the directed relation graph with error propagation and sensitivity analysis method followed by a further unimportant reaction elimination stage, skeletal mechanisms valid over comprehensive and high-temperature ranges of conditions were developed at varying levels of detail. These skeletal mechanisms were generated based on autoignition simulations, and validation using ignition delay predictions showed good agreement with the detailed mechanism in the target range of conditions. When validated using phenomena other than autoignition, suchmore »as perfectly stirred reactor and laminar flame propagation, tight error control or more restrictions on the reduction during the sensitivity analysis stage were needed to ensure good agreement. In addition, tight error limits were needed for close prediction of ignition delay when varying the mixture composition away from that used for the reduction. In homogeneous compression-ignition engine simulations, the skeletal mechanisms closely matched the point of ignition and accurately predicted species profiles for lean to stoichiometric conditions. Furthermore, the efficacy of generating a multicomponent skeletal mechanism was compared to combining skeletal mechanisms produced separately for neat fuel components; using the same error limits, the latter resulted in a larger skeletal mechanism size that also lacked important cross reactions between fuel components. Based on the present results, general guidelines for reducing detailed mechanisms for multicomponent fuels are discussed.« less

  3. A combustion model for IC engine combustion simulations with multi-component fuels

    SciTech Connect (OSTI)

    Ra, Youngchul; Reitz, Rolf D. [Engine Research Center, University of Wisconsin-Madison (United States)

    2011-01-15T23:59:59.000Z

    Reduced chemical kinetic mechanisms for the oxidation of representative surrogate components of a typical multi-component automotive fuel have been developed and applied to model internal combustion engines. Starting from an existing reduced mechanism for primary reference fuel (PRF) oxidation, further improvement was made by including additional reactions and by optimizing reaction rate constants of selected reactions. Using a similar approach to that used to develop the reduced PRF mechanism, reduced mechanisms for the oxidation of n-tetradecane, toluene, cyclohexane, dimethyl ether (DME), ethanol, and methyl butanoate (MB) were built and combined with the PRF mechanism to form a multi-surrogate fuel chemistry (MultiChem) mechanism. The final version of the MultiChem mechanism consists of 113 species and 487 reactions. Validation of the present MultiChem mechanism was performed with ignition delay time measurements from shock tube tests and predictions by comprehensive mechanisms available in the literature. A combustion model was developed to simulate engine combustion with multi-component fuels using the present MultiChem mechanism, and the model was applied to simulate HCCI and DI engine combustion. The results show that the present multi-component combustion model gives reliable performance for combustion predictions, as well as computational efficiency improvements through the use of reduced mechanism for multi-dimensional CFD simulations. (author)

  4. Geothermal well log interpretation state of the art. Final report

    SciTech Connect (OSTI)

    Sanyal, S.K.; Wells, L.E.; Bickham, R.E.

    1980-01-01T23:59:59.000Z

    An in-depth study of the state of the art in Geothermal Well Log Interpretation has been made encompassing case histories, technical papers, computerized literature searches, and actual processing of geothermal wells from New Mexico, Idaho, and California. A classification scheme of geothermal reservoir types was defined which distinguishes fluid phase and temperature, lithology, geologic province, pore geometry, salinity, and fluid chemistry. Major deficiencies of Geothermal Well Log Interpretation are defined and discussed with recommendations of possible solutions or research for solutions. The Geothermal Well Log Interpretation study and report has concentrated primarily on Western US reservoirs. Geopressured geothermal reservoirs are not considered.

  5. Log-domain circuit models of chemical reactions

    E-Print Network [OSTI]

    Mandal, Soumyajit

    We exploit the detailed similarities between electronics and chemistry to develop efficient, scalable bipolar or subthreshold log-domain circuits that are dynamically equivalent to networks of chemical reactions. Our ...

  6. Selecting The Optimal Logging Suite For Geothermal Reservoir...

    Open Energy Info (EERE)

    Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library...

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

    E-Print Network [OSTI]

    Zhu, Zhenya

    2012-01-01T23:59:59.000Z

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

  8. JOBAID-LOGGING IN TO THE OLC LEARNING SYSTEM

    Broader source: Energy.gov [DOE]

    In this job aid you will Log In to the system, Retrieve Forgotten Password and/or User ID, and Use the LMS Help System built into the application.

  9. Secured Pace Web Server with Collaboration and Error Logging Capabilities

    E-Print Network [OSTI]

    Tao, Lixin

    : Secure Sockets Layer (SSL) using the Java Secure Socket Extension (JSSE) API, error logging............................................................................................ 8 Chapter 3 Secure Pace Web Server with SSL........................................................... 29 3.1 Introduction to SSL

  10. COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE COSO...

    Open Energy Info (EERE)

    THE COSO GEOTHERMAL FIELD, CA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: COMPARISON OF ACOUSTIC AND ELECTRICAL IMAGE LOGS FROM THE...

  11. VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase ____________________________ Week Ended (Sunday) _________________

    E-Print Network [OSTI]

    Yang, Zong-Liang

    VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase ____________________________ Week Ended (Sunday) _________________ Door #____________ License Plate ____________________ Vehicle/Supplies (Enter Description such as grade sheets, artifacts, money, etc.) 6. Taking vehicle to Automotive Shop

  12. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10T23:59:59.000Z

    The objective of this project was to characterize the fluid properties and fluid-rock interactions which are needed for formation evaluation by NMR well logging. NMR well logging is finding wide use in formation evaluation. The formation parameters commonly estimated were porosity, permeability, and capillary bound water. Special cases include estimation of oil viscosity, residual oil saturation, location of oil/water contact, and interpretation on whether the hydrocarbon is oil or gas.

  13. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore K.

    2003-02-10T23:59:59.000Z

    The objective of this project was to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity.

  14. Calculation of sensitivity coefficients for a neutron well logging tool

    E-Print Network [OSTI]

    Chen, Chien-Hsiang

    1993-01-01T23:59:59.000Z

    OF SCIENCE August 1993 Major Subject: Nuclear Engineering CALCULATION OF SENSITIVITY COEFFICIENTS FOR A NEUTRON WELL LOGGING TOOL A Thesis by CHIEN-HSIANG CHEN Approved as to style and content by: Theodore A. Parish (Chair of Committee) Ron R. Hart... to calculate sensitivity coefficients. A benchmark problem for a neutron porosity logging tool was set up to test the methodology mentioned above. Through several tests and calculations of sensitivity coefficients, it was found that the response...

  15. assistant-based clinical log: Topics by E-print Network

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

    Renewable Energy Websites Summary: to endorse or advertise a commercial product or company. 12;Gentle Logging System Evaluation (ParticipantsGentle Logging System...

  16. A Symmetric Free Energy Based Multi-Component Lattice Boltzmann Method

    E-Print Network [OSTI]

    Qun Li; A. J. Wagner

    2007-04-26T23:59:59.000Z

    We present a lattice Boltzmann algorithm based on an underlying free energy that allows the simulation of the dynamics of a multicomponent system with an arbitrary number of components. The thermodynamic properties, such as the chemical potential of each component and the pressure of the overall system, are incorporated in the model. We derived a symmetrical convection diffusion equation for each component as well as the Navier Stokes equation and continuity equation for the overall system. The algorithm was verified through simulations of binary and ternary systems. The equilibrium concentrations of components of binary and ternary systems simulated with our algorithm agree well with theoretical expectations.

  17. Arbitrary amplitude ion-acoustic waves in a multicomponent plasma with superthermal species

    SciTech Connect (OSTI)

    El-Tantawy, S. A. [Department of Physics, Faculty of Science, Port Said University, Port Said 42521 (Egypt); Moslem, W. M. [Department of Physics, Faculty of Science, Port Said University, Port Said 42521 (Egypt); International Center for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum (Germany)

    2011-11-15T23:59:59.000Z

    Properties of fully nonlinear ion-acoustic waves in a multicomponent plasma consisting of warm positive ions, superthermal electrons, as well as positrons, and dust impurities have been investigated. By using the hydrodynamic model for ions and superthermal electron/positron distribution, a Sagdeev potential has been derived. Existence conditions for large amplitude solitary and shock waves are presented. In order to show that the characteristics of the solitary and shock waves are influenced by the plasma parameters, the relevant numerical analysis of the Sagdeev potential is presented. The nonlinear structures, as predicted here, may be associated with the electrostatic perturbations in interstellar medium.

  18. First and second order approximations to stage numbers in multicomponent enrichment cascades

    SciTech Connect (OSTI)

    Scopatz, A. [University of Chicago, 5754 S. Ellis Ave, Chicago, IL, 60637 (United States)

    2013-07-01T23:59:59.000Z

    This paper describes closed form, Taylor series approximations to the number product stages in a multicomponent enrichment cascade. Such closed form approximations are required when a symbolic, rather than a numeric, algorithm is used to compute the optimal cascade state. Both first and second order approximations were implemented. The first order solution was found to be grossly incorrect, having the wrong functional form over the entire domain. On the other hand, the second order solution shows excellent agreement with the 'true' solution over the domain of interest. An implementation of the symbolic, second order solver is available in the free and open source PyNE library. (authors)

  19. User's manual for geophysical well-logging software programs

    SciTech Connect (OSTI)

    Petrie, G.M.; Gibson, D.; Blair, S.C.

    1983-02-01T23:59:59.000Z

    Since 1958 the Ground-Water Surveillance Program for the Hanford Site has made geophysical logging measurements in most of the 800 wells and deep boreholes that have been drilled on the Hanford Site. In 1980 the Pacific Northwest Laboratory (PNL), which conducts the Ground-Water Surveillance Program, began forming a computerized data base for storing and retrieving geophysical well log data and developing software for quantitative analysis of the well log data. This report, designed to serve as a user's guide, documents the data base system that handles the well log data. Two programs, DIGLOG1 and LOGIT, are used to manipulate the data. The program DIGLOG1 translates analog paper strip charts into digital format; the program LOGIT is a general utility program that edits, displays, checks, stores, writes, and deletes sets of well log data. These two programs do not provide sophisticated display and analytical capabilities; rather, they provide programs that give the user easy access to powerful standard analytical software.

  20. April 2002 Page 1 of 6 Export credits: Fuelling illegal logging

    E-Print Network [OSTI]

    April 2002 Page 1 of 6 Export credits: Fuelling illegal logging Export Credit Agencies (ECAs and indirectly to illegal logging. This briefing note details the relationship between ECAs and illegal logging and argues that, in order to address the problem of illegal logging, the EU cannot limit its activities

  1. Strategies to Combat Illegal Logging and Forest Crime Magnitude of the problem

    E-Print Network [OSTI]

    Strategies to Combat Illegal Logging and Forest Crime Magnitude of the problem Illegal logging estimated illegal logging as equal or exceeding the legal harvest rates in a number of countries including percent), Myanmar (80 percent), and Cambodia (94 percent). However, illegal logging is not limited

  2. System Problem Detection by Mining Console Logs Electrical Engineering and Computer Sciences

    E-Print Network [OSTI]

    Xu, Wei

    for mining console logs using a combination of program analysis, information retrieval, data mining logs. We then extract features, such as execution traces, from logs and use data mining and machineSystem Problem Detection by Mining Console Logs Wei Xu Electrical Engineering and Computer Sciences

  3. Cased-hole evaluation with the chlorine log

    SciTech Connect (OSTI)

    Deimel, J.; Andrus, D.

    1984-09-01T23:59:59.000Z

    Typical problems faced by operators in the Gulf of Mexico are the evaluation of low resistive potentially productive zones and depleted zones behind pipe. Tenneco Oil Company has used the chlorine logging system to solve these problems in numerous wells and several case studies are presented. The chlorine logging system is a neutroncapture spectral measurement and analysis technique which provides a quantitative, lithology-independent water saturation (Sw) interpretation. Water saturation is derived from the measured spectral response, formation porosity, formation water salinity, and wellbore geometry. No corrections for borehole fluid or shale volume are necessary. This logging system demonstrates its usefulness in evaluating low resistivity pay zones and evaluating water movement within producing and/or produced zones.

  4. Proposed geologic model based on geophysical well logs

    SciTech Connect (OSTI)

    Diaz C, S.; Puente C, I.; de la Pena L, A.

    1981-01-01T23:59:59.000Z

    An investigation of the subsurface based on a qualitative interpretation of well logs was carried out at Cerro Prieto to obtain information on the distribution of the different lithofacies that make up a deltaic depositional system. The sedimentological interpretation derived from the resistivity and spontaneous potential are shown in several cross-sections of the field. In addition to the sedimentological interpretation, a map of the structural geology of the region based on well logs and available geophysical information was prepared, including the results of gravity and seismic refraction surveys. The depth to the zone of hydrothermal alteration described by Elders (1980) was found by means of temperature, electrical, and radioactive logs. Two maps showing the configuration of the top of this anomaly show a clear correlation with the gravity anomalies found in the area.

  5. A Robust MEMS Based Multi-Component Sensor for 3D Borehole Seismic Arrays

    SciTech Connect (OSTI)

    Paulsson Geophysical Services

    2008-03-31T23:59:59.000Z

    The objective of this project was to develop, prototype and test a robust multi-component sensor that combines both Fiber Optic and MEMS technology for use in a borehole seismic array. The use such FOMEMS based sensors allows a dramatic increase in the number of sensors that can be deployed simultaneously in a borehole seismic array. Therefore, denser sampling of the seismic wave field can be afforded, which in turn allows us to efficiently and adequately sample P-wave as well as S-wave for high-resolution imaging purposes. Design, packaging and integration of the multi-component sensors and deployment system will target maximum operating temperature of 350-400 F and a maximum pressure of 15000-25000 psi, thus allowing operation under conditions encountered in deep gas reservoirs. This project aimed at using existing pieces of deployment technology as well as MEMS and fiber-optic technology. A sensor design and analysis study has been carried out and a laboratory prototype of an interrogator for a robust borehole seismic array system has been assembled and validated.

  6. Monte Carlo methods and their analysis for Coulomb collisions in multicomponent plasmas

    SciTech Connect (OSTI)

    Bobylev, A.V., E-mail: alexander.bobylev@kau.se [Department of Mathematics, Karlstad University, SE-65188 Karlstad (Sweden); Potapenko, I.F., E-mail: firena@yandex.ru [Keldysh Institute for Applied Mathematics, RAS, 125047 Moscow (Russian Federation)

    2013-08-01T23:59:59.000Z

    Highlights: •A general approach to Monte Carlo methods for multicomponent plasmas is proposed. •We show numerical tests for the two-component (electrons and ions) case. •An optimal choice of parameters for speeding up the computations is discussed. •A rigorous estimate of the error of approximation is proved. -- Abstract: A general approach to Monte Carlo methods for Coulomb collisions is proposed. Its key idea is an approximation of Landau–Fokker–Planck equations by Boltzmann equations of quasi-Maxwellian kind. It means that the total collision frequency for the corresponding Boltzmann equation does not depend on the velocities. This allows to make the simulation process very simple since the collision pairs can be chosen arbitrarily, without restriction. It is shown that this approach includes the well-known methods of Takizuka and Abe (1977) [12] and Nanbu (1997) as particular cases, and generalizes the approach of Bobylev and Nanbu (2000). The numerical scheme of this paper is simpler than the schemes by Takizuka and Abe [12] and by Nanbu. We derive it for the general case of multicomponent plasmas and show some numerical tests for the two-component (electrons and ions) case. An optimal choice of parameters for speeding up the computations is also discussed. It is also proved that the order of approximation is not worse than O(?(?)), where ? is a parameter of approximation being equivalent to the time step ?t in earlier methods. A similar estimate is obtained for the methods of Takizuka and Abe and Nanbu.

  7. Correlation of log response to production in the Austin Chalk 

    E-Print Network [OSTI]

    Behseresht, Cyrus Douglas

    1992-01-01T23:59:59.000Z

    of this study is to determine to what degree the response of resistivity well-logs reflects the productivity of individual wells in the Austin Chalk. An area in south-central Burleson County was chosen for the study. Logs were available from 38 wells... for the Proco Gise data, Ro at 4% is 3. 59 ohm-m (figure 12). Thus, the Proco Gise ?1 data supports an Ro of approximately 3. 58 at 4% porosity in the Austin Chalk. This test of the empirical relationship between Rt and water saturation in the Chalk does...

  8. Cation Geothermometers At Lightning Dock Geothermal Area (Witcher, 2006) |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.Telluric Survey as explorationpage? ForChinaOpen Energy

  9. Chemical Geothermometers And Mixing Models For Geothermal Systems | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.Telluric SurveyChelan County, Washington: EnergyChemical Design

  10. Henn-Lecordier -AVS 99 -MS -WeM10 1 Reaction Sensing in Multicomponent CVD Processes

    E-Print Network [OSTI]

    Rubloff, Gary W.

    : average specific heat ratio Mavg: average molecular weight · Multicomponent systems ­ F = f ( Average · Remote downstream sampling ­ poor repeatability · Sampling at reactor outlet ­ minimize wall reaction in acoustic sensor for real-time sensing requires 2.5 L.Torr/s throughput 0.5 Torr Remote sampling300 Torr 20

  11. Subsistence Halibut Community Harvest Log Page 1 of 4

    E-Print Network [OSTI]

    -0512, Expiration date: 07/31/2014 Subsistence Halibut Community Harvest Permit (CHP) Log U.S. Dept of Commerce-1668 Telephone: 1-800-304-4846 FAX: 907-586-7354 BLOCK A ­ CHP COORDINATOR 1. Name of CHP Coordinator 2. Signature of CHP Coordinator BLOCK B -- SUBSISTENCE FISHER IDENTIFICATION 1. Name of Fisher (First, Middle

  12. TEAM CAPTAIN'S LOG Team Captain's Name: Team Name

    E-Print Network [OSTI]

    MKT-3131 D TEAM CAPTAIN'S LOG Team Captain's Name: Team Name: Team Captain's Phone Number: County. Enter information online at http://walkacrosstexas.tamu.edu. Record your team members= total weekly mileage (and pounds lost, if recorded) and enter online. In Week 7, remind your team members to complete

  13. Estimating the Service Time of Web Clients using Server Logs

    E-Print Network [OSTI]

    Freitag, Felix

    Estimating the Service Time of Web Clients using Server Logs Oscar Ardaiz Dep. Arquitectura de Freitag Dep. Arquitectura de Computadores Universidad Politécnica de Catalunya Jordi Girona, 1­3, Barcelona (España) felix@ac.upc.es Leandro Navarro Dep. Arquitectura de Computadores Universidad Politécnica

  14. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    George J. Hirasaki; Kishore K. Mohanty

    2005-09-05T23:59:59.000Z

    The objective of this report is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. The advances made in the understanding of NMR fluid properties are summarized in a chapter written for an AAPG book on NMR well logging. This includes live oils, viscous oils, natural gas mixtures, and the relation between relaxation time and diffusivity. Oil based drilling fluids can have an adverse effect on NMR well logging if it alters the wettability of the formation. The effect of various surfactants on wettability and surface relaxivity are evaluated for silica sand. The relation between the relaxation time and diffusivity distinguishes the response of brine, oil, and gas in a NMR well log. A new NMR pulse sequence in the presence of a field gradient and a new inversion technique enables the T{sub 2} and diffusivity distributions to be displayed as a two-dimensional map. The objectives of pore morphology and rock characterization are to identify vug connectivity by using X-ray CT scan, and to improve NMR permeability correlation. Improved estimation of permeability from NMR response is possible by using estimated tortuosity as a parameter to interpolate between two existing permeability models.

  15. DARK ENERGY FROM THE LOG-TRANSFORMED CONVERGENCE FIELD

    SciTech Connect (OSTI)

    Seo, Hee-Jong [Berkeley Center for Cosmological Physics, LBL and Department of Physics, University of California, Berkeley, CA 94720 (United States); Sato, Masanori [Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Takada, Masahiro [Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Chiba 277-8582 (Japan); Dodelson, Scott, E-mail: hee-jongseo@lbl.gov [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, IL 60510 (United States)

    2012-03-20T23:59:59.000Z

    A logarithmic transform of the convergence field improves 'the information content', i.e., the overall precision associated with the measurement of the amplitude of the convergence power spectrum, by improving the covariance matrix properties. The translation of this improvement in the information content to that in cosmological parameters, such as those associated with dark energy, requires knowing the sensitivity of the log-transformed field to those cosmological parameters. In this paper, we use N-body simulations with ray tracing to generate convergence fields at multiple source redshifts as a function of cosmology. The gain in information associated with the log-transformed field does lead to tighter constraints on dark energy parameters, but only if shape noise is neglected. The presence of shape noise quickly diminishes the advantage of the log-mapping, more quickly than we would expect based on the information content. With or without shape noise, using a larger pixel size allows for a more efficient log-transformation.

  16. Condition and fate of logged forests in the Brazilian Amazon

    E-Print Network [OSTI]

    Camara, Gilberto

    Ecology, Carnegie Institution of Washington, Stanford, CA 94305; U.S. Department of Agriculture Forest resulted in high levels of canopy damage suffi- cient to leave forests susceptible to drought and fire. We the management regimes in effect at the time of our study in the Brazilian Amazon, selective logging would

  17. Lawson Job Description Acknowledgment Verification Instructions Log In to Lawson

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Lawson Job Description Acknowledgment Verification Instructions · Log In to Lawson o Lawson Web Lawson e-mail your password to you. Updated 3/15/10 Page 1 of 3 #12;Lawson Job Description Acknowledgment Verification Instructions Click "Employee's Sign-off of their Job Description" · Click "Employee's Sign

  18. Lawson Job Description Acknowledgment Instructions Log In to Lawson

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Lawson Job Description Acknowledgment Instructions · Log In to Lawson o Lawson Web Address: - https. Updated 3/15/10 Page 1 of 6 #12;Lawson Job Description Acknowledgment Instructions Click "My Job Description" · Click "My Job Description" from the Employee Central section of your home page o "My Job

  19. Multicomponent Seismic Analysis and Calibration to Improve Recovery from Algal Mounds: Application to the Roadrunner/Towaoc area of the Paradox Basin, UTE Mountain UTE Reservation, Colorado

    SciTech Connect (OSTI)

    Joe Hachey

    2007-09-30T23:59:59.000Z

    The goals of this project were: (1) To enhance recovery of oil contained within algal mounds on the Ute Mountain Ute tribal lands. (2) To promote the use of advanced technology and expand the technical capability of the Native American Oil production corporations by direct assistance in the current project and dissemination of technology to other Tribes. (3) To develop an understanding of multicomponent seismic data as it relates to the variations in permeability and porosity of algal mounds, as well as lateral facies variations, for use in both reservoir development and exploration. (4) To identify any undiscovered algal mounds for field-extension within the area of seismic coverage. (5) To evaluate the potential for applying CO{sub 2} floods, steam floods, water floods or other secondary or tertiary recovery processes to increase production. The technical work scope was carried out by: (1) Acquiring multicomponent seismic data over the project area; (2) Processing and reprocessing the multicomponent data to extract as much geological and engineering data as possible within the budget and time-frame of the project; (3) Preparing maps and data volumes of geological and engineering data based on the multicomponent seismic and well data; (4) Selecting drilling targets if warranted by the seismic interpretation; (5) Constructing a static reservoir model of the project area; and (6) Constructing a dynamic history-matched simulation model from the static model. The original project scope covered a 6 mi{sup 2} (15.6 km{sup 2}) area encompassing two algal mound fields (Towaoc and Roadrunner). 3D3C seismic data was to acquired over this area to delineate mound complexes and image internal reservoir properties such as porosity and fluid saturations. After the project began, the Red Willow Production Company, a project partner and fully-owned company of the Southern Ute Tribe, contributed additional money to upgrade the survey to a nine-component (3D9C) survey. The purpose of this upgrade to nine components was to provide additional shear wave component data that might prove useful in delineating internal mound reservoir attributes. Also, Red Willow extended the P-wave portion of the survey to the northwest of the original 6 mi{sup 2} (15.6 km{sup 2}) 3D9C area in order to extend coverage further to the northwest to the Marble Wash area. In order to accomplish this scope of work, 3D9C seismic data set covering two known reservoirs was acquired and processed. Three-dimensional, zero-offset vertical seismic profile (VSP) data was acquired to determine the shear wave velocities for processing the sh3Dseismic data. Anisotropic velocity, and azimuthal AVO processing was carried out in addition to the conventional 3D P-wave data processing. All P-, PS- and S-wave volumes of the seismic data were interpreted to map the seismic response. The interpretation consisted of conventional cross-plots of seismic attributes vs. geological and reservoir engineering data, as well as multivariate and neural net analyses to assess whether additional resolution on exploration and engineering parameters could be achieved through the combined use of several seismic variables. Engineering data in the two reservoirs was used to develop a combined lithology, structure and permeability map. On the basis of the seismic data, a well was drilled into the northern mound trend in the project area. This well, Roadrunner No.9-2, was brought into production in late April 2006 and continues to produce modest amounts of oil and gas. As of the end of August 2007, the well has produced approximately 12,000 barrels of oil and 32,000 mcf of gas. A static reservoir model was created from the seismic data interpretations and well data. The seismic data was tied to various markers identified in the well logs, which in turn were related to lithostratigraphy. The tops and thicknesses of the various units were extrapolated from well control based upon the seismic data that was calibrated to the well picks. The reservoir engineering properties were available from a number of wel

  20. Peru: Illegal Mahogany Logging Continues in Reserve for Uncontacted Tribes Widespread illegal mahogany logging continues inside Peru's Muruanahua Territorial Reserve

    E-Print Network [OSTI]

    Peru: Illegal Mahogany Logging Continues in Reserve for Uncontacted Tribes Widespread illegal, indicating the settlement continues to be used as a transport center for mahogany illegally removed from and Park, loggers cut the trees into large boards with chainsaws. Because chainsawing mahogany is illegal

  1. Export premium: Why some logs are worth more abroad. Forest Service research paper

    SciTech Connect (OSTI)

    Flora, D.F.; McGinnis, W.J.; Lane, C.L.

    1993-07-01T23:59:59.000Z

    Throughout a century of log exports from the Pacific Northwest, export logs have been associated with higher prices than logs sold in the domestic market. Conventional wisdom currently maintains this perception that any export log is worth more than its domestic counterpart. The export-domestic difference, or export premium, seems to belie reason. Why would foreign buyers be willing to pay more than U.S. customers for the same log. In reality, do they. If they do, why do offshore purchasers not shift to inland logs, so that the premium would dwindle. Discussed here are circumstances that do and do not foster a continuing export premium.

  2. Technical status report on the prediction of amorphous phase separation in multicomponent borosilicate glasses. Revision 0

    SciTech Connect (OSTI)

    Peeler, D.K.

    1998-12-31T23:59:59.000Z

    This status report describes the current status for predicting of amorphous phase separation in multicomponent borosilicate glasses and the two major development criteria (composition and thermal history). The goal of this subtask is to perform targeted research activities to define and, where applicable, extend the boundaries of existing phase stability models that restrict HLW glass waste loading. Specifically, the focus will be on delimiting boundaries for immiscible phase separation. The development of data, understanding, and quantitative description for composition and kinetic effects on the development of amorphous phase separation will continue in FY98. This effort will provide insight into the compositional effects on phase stability and will lead to a better understanding of the methods used to predict the development of amorphous phase separation in HLW glasses.

  3. Mechanism reduction for multicomponent surrogates: a case study using toluene reference fuels

    E-Print Network [OSTI]

    Niemeyer, Kyle E

    2014-01-01T23:59:59.000Z

    Strategies and recommendations for performing skeletal reductions of multicomponent surrogate fuels are presented, through the generation and validation of skeletal mechanisms for a three-component toluene reference fuel. Using the directed relation graph with error propagation and sensitivity analysis method followed by a further unimportant reaction elimination stage, skeletal mechanisms valid over comprehensive and high-temperature ranges of conditions were developed at varying levels of detail. These skeletal mechanisms were generated based on autoignition simulations, and validation using ignition delay predictions showed good agreement with the detailed mechanism in the target range of conditions. When validated using phenomena other than autoignition, such as perfectly stirred reactor and laminar flame propagation, tight error control or more restrictions on the reduction during the sensitivity analysis stage were needed to ensure good agreement. In addition, tight error limits were needed for close pr...

  4. Chromium Phase Behavior in a Multi-Component Borosilicate Glass Melt

    SciTech Connect (OSTI)

    Hrma, Pavel R.; Vienna, John D.; Wilson, B. K.; Plaisted, Trevor J.; Heald, Steve M.

    2006-07-31T23:59:59.000Z

    This paper reports the phase behavior of a multicomponent borosilicate glass melt with 0?3 mass% Cr2O3 at 800?1500°C in equilibrium with air. Both upper and lower liquidus temperatures were observed. When the temperature was between the upper and lower liquidus temperatures, eskolaite (Cr2O3) formed in melts with >2 mass% Cr2O3. Below the lower liquidus temperature, a dispersed chromate phase appeared in the melt that eventually became macroscopically segregated. The chemical durability of the glasses was virtually unaffected by chromium concentration. The particular glass studied was prototypic for the vitrification of high-Cr high-level radioactive wastes stored in underground tanks at the Hanford site. The results suggest a significant potential cost benefit for Hanford tank waste cleanup.

  5. Coupling Multi-Component Models with MPH on Distributed MemoryComputer Architectures

    SciTech Connect (OSTI)

    He, Yun; Ding, Chris

    2005-03-24T23:59:59.000Z

    A growing trend in developing large and complex applications on today's Teraflop scale computers is to integrate stand-alone and/or semi-independent program components into a comprehensive simulation package. One example is the Community Climate System Model which consists of atmosphere, ocean, land-surface and sea-ice components. Each component is semi-independent and has been developed at a different institution. We study how this multi-component, multi-executable application can run effectively on distributed memory architectures. For the first time, we clearly identify five effective execution modes and develop the MPH library to support application development utilizing these modes. MPH performs component-name registration, resource allocation and initial component handshaking in a flexible way.

  6. Partial Molar Liquidus Temperatures of Multivalent Elements in Multicomponent Borosilicate Glass

    SciTech Connect (OSTI)

    Hrma, Pavel R. (BATTELLE (PACIFIC NW LAB)); Izak, Pavel (ASSOC WESTERN UNIVERSITY); Vienna, John D. (BATTELLE (PACIFIC NW LAB)); Thomas, M-L (.); Irwin, G M. (.)

    2002-01-01T23:59:59.000Z

    A multicomponent borosilicate glass containing several multivalent elements (Fe, Ni, Cr, Mn) and precipitating (Fe,Ni,Mn,Cr)(Fe,Cr,Mn)2O4 spinel as its primary phase, was equilibrated with the gas phase over the range of oxygen partial pressures, from 10{sup -13} Pa to 10{sup 5} Pa and temperatures, T, from 850 C to 1300 C. The oxidation-reduction equilibrium of Fe in the glass was measured with Mossbauer spectroscopy and wet colorimetry. These data were combined with oxidation-reduction equilibria for Fe, Ni, and Cr in a borosilicate frit of a similar composition found in the literature to estimate concentrations of Fe(II), Fe(III), Ni(II), Cr(II), Cr(III), and Cr(VI) as functions of T. Measured liquidus temperature (TL) data for the test glasses within the same range were then added to a critically evaluated TL database composed of multicomponent borosilicate glasses within the spinel primary crystalline phase field. The set of partial molar liquidus temperatures for elements other than oxygen determined from this database was then augmented by values for Fe(II), Fe(III), Cr(II), Cr(III), and Cr(VI). A 0.1-mol% change in the metal ion concentration increases TL as follows: Fe(II) by 4.6 C, Fe(III) by 2.8 C, Cr(II) by 185?C, Cr(III) by 66 C, and Cr(VI) by -17 C. The calculated TL based on partial molar liquidus temperatures agreed with the measured TL in the range from 10{sup -13} Pa to 10{sup 5} Pa.

  7. WATER RESOURCES RESEARCH, VOL. 29, NO. 11, PAGES 3727-3740, NOVEMBER 1993 Modeling of Multiphase Transport of Multicomponent Organic Contaminants

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    WATER RESOURCES RESEARCH, VOL. 29, NO. 11, PAGES 3727-3740, NOVEMBER 1993 Modeling of Multiphase, Berkeley A numerical compositionalsimulator (Multiphase Multicomponent Nonisothermal Organics Trans- portSimulator(M2NOTS))hasbeendevelopedformodelingtransient,three-dimensional,noniso- thermal, and multiphase

  8. Analysis of Substrate Access to Active Sites in Bacterial Multicomponent Monooxygenase Hydroxylases: X-Ray Crystal Structure of Xenon-Pressurized Phenol Hydroxylase from Pseudomonas Sp Ox1

    E-Print Network [OSTI]

    McCormick, Michael S.

    In all structurally characterized bacterial multicomponent monooxygenase (BMM) hydroxylase proteins, a series of hydrophobic cavities in the ?-subunit trace a conserved path from the protein exterior to the carboxylate-bridged ...

  9. Mortality of regeneration during skyline logging of a shelterwood overstory

    SciTech Connect (OSTI)

    Tesch, S.D.; Lysne, D.H.; Mann, J.W.; Helgerson, O.T.

    1986-01-01T23:59:59.000Z

    The overstorey was felled in July and August 1980 on a 9-ha site on a 65% slope near Medford, Oregon, where a single regeneration cut was made in 1977 and the area was underplanted with Douglas fir and ponderosa pine in 1978. Before logging, seedlings (height 5-400 cm) were found on 35% of sample plots. Felling killed 22% of seedlings. Yarding using a running skyline yarder with a mechanical slack-pulling carriage killed 28% of seedlings that survived felling. Mortality was least in the 61-100 cm height class. It is concluded that a logging plan that minimizes corridor width and number of corridors converging at a single landing gives the best distribution of seedlings after the final cut. 2 references.

  10. Knowledge-based stratigraphic well-log correlation 

    E-Print Network [OSTI]

    Denton, Michael A.

    1990-01-01T23:59:59.000Z

    correlated higher ranking strata. Thus, higher ranking correlations provide heuristics for lower ranking correlations. The system represents strata by symbols from a set of standard symbols which include peaks, troughs, and steps. Symbols replace events.... The zone attributes abstracted from the well-log include the following: interval, lithology ? classified as shale or non-shale, zone position, general zone shape, thickness, average amplitude, zone above name, and zone below name. Thus, the expert system...

  11. Some new ideas for well log pore-pressure prediction

    SciTech Connect (OSTI)

    Hamouz, M.A.; Mueller, S.L.

    1984-09-01T23:59:59.000Z

    Predicting pore pressure from wireline logs is a common practice when designing wells. The accuracy of each prediction depends on the type of plot used and its associated assumptions. If these assumptions aren't adequately tested, then the results are often confusing and, possibly, dangerous. Accuracy is improved in all situations by plotting the correct wireline variables, checking the validity of the normal pressure trends with other pressure plots and regional data, and choosing the best techniques to estimate pressure.

  12. An expert system advisor for well log quality control

    E-Print Network [OSTI]

    Warnken, Dean Kennedy

    1988-01-01T23:59:59.000Z

    funda- mental tool in the evaluation of petroleum reservoirs. Wireline well logging involves undergrourR measurement of various rock and fluid properties. These meas~ts are usually recorded with a downhole sonde and ~tted to the surface through a... expert systems, has proven to be an effective com- puterized problem solving tool in many oilfield applications. Expert systems strive to mimic an ~'s reasoning process when performing a highly specialized task. Expert system problem solvirg combines...

  13. Stratigraphic correlation of well logs using relational tree

    SciTech Connect (OSTI)

    Fang, J.H.; Tsay, F.; Lai, P.F.

    1986-05-01T23:59:59.000Z

    A heuristic waveform correlation scheme of well logs is based on a relational tree matching. Waveforms (well logs) are represented in a data structure known as a relational tree. A relational tree provides a complete description of the contextural relationships, as defined by peaks and valleys of the waveforms. The correlational scheme consists of a distance-measuring process using all possible peak attributes. First, a distance function is defined for any two nodes in terms of peak attributes. To find the best match for a given node of a given waveform, the authors measure the distance between the given node and each node from a predefined subset of the second waveform. The closest one is considered to be the matched node. The process is repeated for every node in the waveform. This quantitative correlation method has been implemented and tested with well logs from the Black Warrior basin, north Alabama. Results showed that the procedure has the capability of handling the thickening and thinning strata, as well as missing intervals.

  14. What is a blog? The word "blog," a contraction of "web log," is an informational web

    E-Print Network [OSTI]

    Zhou, Pei

    What is a blog? The word "blog," a contraction of "web log," is an informational web page's log, blogs on the web tend to maintain an ordered chronology, although they often unfold in reverse

  15. Nuclear Magnetic Resonance (NMR) is the only logging technique available to estimate pore-size

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    1 ABSTRACT Nuclear Magnetic Resonance (NMR) is the only logging technique available to estimate, Nuclear Magnetic Resonance (NMR) logging has been used to assess a handful of key petrophysical parameters

  16. TITANium Quick Tips How to log into TITANium and enter a Community

    E-Print Network [OSTI]

    de Lijser, Peter

    TITANium Quick Tips How to log into TITANium and enter a Community: 1. Log into your portal with your user name and password. 2. Click on the TITANium tab. 3. Click on TITANium Communities 4 navigating TITANium Communities. #12;

  17. CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS

    E-Print Network [OSTI]

    CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS A study prepared@riia.org February 2002 #12;Controlling the international trade in illegally logged timber and wood products Page 2...................................................................................................................... 11 ILLEGAL ACTIVITIES IN THE FOREST SECTOR

  18. ForPeerReview Interpretation of hydraulic rock types with resistivity logs in

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Subject Areas: Borehole and log interpretation, Integrated workflows and best practices (with broad hydraulic rock types. Core data and well logs acquired from a deep-drilling exploration well penetrating

  19. Boise State University Automobile Use Mileage Log (Documentation for Business Miles)

    E-Print Network [OSTI]

    Barrash, Warren

    Boise State University Automobile Use Mileage Log (Documentation for Business Miles) Rev. 03 University Automobile Use Mileage Log (Documentation for Business Miles) Rev. 03/10 PAGE ____ (IF YOU NEED

  20. Object-Based Image Analysis of Downed Logs in Disturbed Forested Landscapes Using Lidar

    E-Print Network [OSTI]

    Kelly, Maggi

    2011-01-01T23:59:59.000Z

    quantity and location of downed logs in forests is important for assessing fire risk [4,5], measuring dead biomass

  1. Illegal logging and destruction continues in the Greenpeace demands all companies stop buying wood

    E-Print Network [OSTI]

    Illegal logging and destruction continues in the Amazon Greenpeace demands all companies stop. Pombo, one of the largest log traders in the Porto de Moz area, supplies companies such as Eidai do of Brazil's Para State. Activists painted "Crime" on 6,000 cubic metres of logs and on a barge used

  2. Annual Logging Symposium, June 19-23, 2010 QUANTITATIVE INTERPRETATION OF PULSED NEUTRON

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    measurements. The extension of time-lapse logging in waterflooded reservoirs is the estimation of waterflood for shoulder-bed effects on PNC logs acquired in sand- shale laminated reservoirs. Due to diffusion effects-hole saturation monitoring. PNC logs can be used to discriminate hydrocarbon- from water-bearing reservoir units

  3. Illegal logging, landscape structure and the variation of tree species richness across North Andean forest remnants

    E-Print Network [OSTI]

    Rodríguez, Miguel Ángel

    Illegal logging, landscape structure and the variation of tree species richness across North Andean countries, namely illegal logging for household consumption (ILHC), as well as that of characteristics richness; Cloud forest 1. Introduction Forest clearing by legal or illegal logging is a major ecological

  4. Home Contact Us Help Site Map Index Search Combating Illegal Logging in Africa

    E-Print Network [OSTI]

    Home · Contact Us · Help · Site Map · Index · Search Combating Illegal Logging in Africa. Deforestation is almost exclusively concentrated in tropical regions. Illegal logging on public lands worldwide to a Ministerial Declaration and Actions targeted at combating illegal logging, associated illegal trade

  5. Seneca Creek Associates, LLC Wood Resources International, LLC "Illegal" Logging and Global Wood Markets

    E-Print Network [OSTI]

    Seneca Creek Associates, LLC Wood Resources International, LLC "Illegal" Logging and Global Wood@aol.com; hekstrom@wri-ltd.com October, 2004 #12;Page ES - 1 Illegal Logging and Global Wood Markets: The Competitive, LLC Executive Summary Illegal logging has been high on the agenda, if not directly at the center

  6. Seneca Creek Associates, LLC Wood Resources International, LLC "Illegal" Logging and Global Wood Markets

    E-Print Network [OSTI]

    Seneca Creek Associates, LLC Wood Resources International, LLC SUMMARY "Illegal" Logging and Global Resources International, LLC Illegal Logging and Global Wood Markets: The Competitive Impacts on the U.S. Wood Products Industry1 Summary Study Objectives Illegal logging and illegal forest activities, in one

  7. THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL

    E-Print Network [OSTI]

    THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL DEFORESTATION IN INDONESIA by Charles E. Palmer CSERGE Working Paper http://www.cserge.ucl.ac.uk/Illegal_Logging.pdf #12;2 THE EXTENT AND CAUSES OF ILLEGAL LOGGING: AN ANALYSIS OF A MAJOR CAUSE OF TROPICAL DEFORESTATION IN INDONESIA

  8. Illegal Logging and Illegal Activities in the Forestry Sector: Overview and Possible Issues

    E-Print Network [OSTI]

    Illegal Logging and Illegal Activities in the Forestry Sector: Overview and Possible Issues Product Markets and Marketing identified the issue of illegal logging and illegal activities these countries' boundaries and provides examples in developed nations. The pernicious effects of illegal logging

  9. CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS

    E-Print Network [OSTI]

    CONTROLLING THE INTERNATIONAL TRADE IN ILLEGALLY LOGGED TIMBER AND WOOD PRODUCTS A study prepared@riia.org February 2002 http://www.illegal-logging.info/uploads/1_ControllingTrade.pdf #12;Controlling the international trade in illegally logged timber and wood products Page 2 Contents EXECUTIVE SUMMARY

  10. African Countries Take Lead On Illegal Logging UN Integrated Regional Information Networks

    E-Print Network [OSTI]

    African Countries Take Lead On Illegal Logging UN Integrated Regional Information Networks Email Abidjan Of the 39 countries which recently signed a declaration outlawing illegal logging 31 came from Africa, an indication of how seriously the problem of illegal logging is viewed around the continent

  11. A UNIX security log analyzer based on from/to access matrix

    E-Print Network [OSTI]

    El-Haj Mahmoud, Samer Ahmad

    2002-01-01T23:59:59.000Z

    or eliminating patterns of normal behavior. This research aims to study UNIX system log files and log analyzers, and to present a new method for log analysis. The method is based on a systems access matrix that provides a set of rules for services in the network...

  12. Three-dimensional stability of dust-ion acoustic solitary waves in a magnetized multicomponent dusty plasma with negative ions

    SciTech Connect (OSTI)

    El-Taibany, W. F.; El-Shamy, E. F. [Department of Physics, Faculty of Science, Mansoura University, Damietta Branch, P.O. 34517, Damietta El-Gedida (Egypt); El-Bedwehy, N. A. [Department of Mathematics, Faculty of Science, Mansoura University, Damietta Branch, P.O. 34517, Damietta El-Gedida (Egypt)

    2011-03-15T23:59:59.000Z

    Using the small-k expansion perturbation method, the three-dimensional stability of dust-ion acoustic solitary waves (DIASWs) in a magnetized multicomponent dusty plasma containing negative heavy ions and stationary variable-charge dust particles is analyzed. A nonlinear Zakharov-Kuznetsov equation adequate for describing these solitary structures is derived. Moreover, the basic features of the DIASWs are studied. The determination of the stability region leads to two different cases depending on the oblique propagation angle. In addition, the growth rate of the produced waves is estimated. The increase of either the negative ion number density or their temperatures or even the number density of the dust grains results in reducing the wave growth rate. Finally, the present results should elucidate the properties of DIASWs in a multicomponent plasma with negative ions, particularly in laboratory experiment and plasma process.

  13. Borehole Calibration Facilities to Support Gamma Logging for Hanford Subsurface Investigation and Contaminant Monitoring - 13516

    SciTech Connect (OSTI)

    McCain, R.G.; Henwood, P.D.; Pope, A.D.; Pearson, A.W. [S M Stoller Corporation, 2439 Robertson Drive, Richland, WA 99354 (United States)] [S M Stoller Corporation, 2439 Robertson Drive, Richland, WA 99354 (United States)

    2013-07-01T23:59:59.000Z

    Repeated gamma logging in cased holes represents a cost-effective means to monitor gamma-emitting contamination in the deep vadose zone over time. Careful calibration and standardization of gamma log results are required to track changes and to compare results over time from different detectors and logging systems. This paper provides a summary description of Hanford facilities currently available for calibration of logging equipment. Ideally, all logging organizations conducting borehole gamma measurements at the Hanford Site will take advantage of these facilities to produce standardized and comparable results. (authors)

  14. Gamma Log At Coso Geothermal Area (1977) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489InformationFrenchtown, NewG22 Jump to: navigation,Log At

  15. Tsallis Distribution Decorated With Log-Periodic Oscillation

    E-Print Network [OSTI]

    Wilk, Grzegorz

    2015-01-01T23:59:59.000Z

    In many situations, in all branches of physics, one encounters power-like behavior of some variables which are best described by a Tsallis distribution characterized by a nonextensivity parameter $q$ and scale parameter $T$. However, there exist experimental results which can be described only by a Tsallis distributions which are additionally decorated by some log-periodic oscillating factor. We argue that such a factor can originate from allowing for a complex nonextensivity parameter $q$. The possible information conveyed by such an approach (like the occurrence of complex heat capacity, the notion of complex probability or complex multiplicative noise) will also be discussed.

  16. Appendix A Lithologic and Monitor Well Completion Logs

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111A Lithologic and Monitor Well Completion Logs

  17. Acoustic Logs At Coso Geothermal Area (1977) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind6:00-06:00AboutAchille,Acme, Washington:AlumLogs At

  18. Acoustic Logs At Coso Geothermal Area (2005) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind6:00-06:00AboutAchille,Acme, Washington:AlumLogs

  19. Category:Cross-Dipole Acoustic Log | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here. Category:Conceptual Model Add.png Add a newpage? ForsovereignLog

  20. Energy Efficiency in Log Homes | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPowerHome | DocumentsElements ofin Log Homes Energy

  1. Property:FirstWellLog | Open Energy Information

    Open Energy Info (EERE)

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

  2. Resistivity Log At Long Valley Caldera Geothermal Area (Nordquist, 1987) |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At Fish

  3. Resistivity Log At Valles Caldera - Redondo Geothermal Area (Rowley, Et

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At

  4. Log of Changes to IMA Mineral List This log file was begun in June 2010 to keep track of changes to the IMA list of minerals

    E-Print Network [OSTI]

    Downs, Robert T.

    1 Log of Changes to IMA Mineral List This log file was begun in June 2010 to keep track of changes to the IMA list of minerals at http://rruff.info/IMA. 2 August 2013: Eltyubyuite: New mineral descriptions of wadalite: a new mineral from the Northern Caucasus, Kabardino-Balkaria, Russia. European Journal

  5. Logging InLogging In Go to Johnson School LibraryGo to Johnson School Library''s Website,s Website,

    E-Print Network [OSTI]

    Lipson, Michal

    #12;Logging InLogging In Go to Johnson School LibraryGo to Johnson School Library''s Website such as Company Name, ConHere you can enter more specifications such as Company Name, Contacttact Name etc;ExampleExample Link to company provides more detailed information of the companLink to company provides

  6. Performances of Multi-Level and Multi-Component Compressed BitmapIndices

    SciTech Connect (OSTI)

    Wu, Kesheng; Stockinger, Kurt; Shoshani, Arie

    2007-04-30T23:59:59.000Z

    This paper presents a systematic study of two large subsetsof bitmap indexing methods that use multi-component and multi-levelencodings. Earlier studies on bitmap indexes are either empirical or foruncompressed versions only. Since most of bitmap indexes in use arecompressed, we set out to study the performance characteristics of thesecompressed indexes. To make the analyses manageable, we choose to use aparticularly simple, but efficient, compression method called theWord-Aligned Hybrid (WAH) code. Using this compression method, a numberof bitmap indexes are shown to be optimal because their worst-case timecomplexities for answering a query is a linear function of the number ofhits. Since compressed bitmap indexes behave drastically different fromuncompressed ones, our analyses also lead to a number of new methods thatare much more efficient than commonly used ones. As a validation for theanalyses, we implement a number of the best methods and measure theirperformance against well-known indexes. The fastest new methods arepredicted and observed to be 5 to 10 times faster than well-knownindexing methods.

  7. Multiphase flow and multicomponent reactive transport model of the ventilation experiment in Opalinus clay

    SciTech Connect (OSTI)

    Zheng, L.; Samper, J.; Montenegro, L.; Major, J.C.

    2008-10-15T23:59:59.000Z

    During the construction and operational phases of a high-level radioactive waste (HLW) repository constructed in a clay formation, ventilation of underground drifts will cause desaturation and oxidation of the rock. The Ventilation Experiment (VE) was performed in a 1.3 m diameter unlined horizontal microtunnel on Opalinus clay at Mont Terri underground research laboratory in Switzerland to evaluate the impact of desaturation on rock properties. A multiphase flow and reactive transport model of VE is presented here. The model accounts for liquid, vapor and air flow, evaporation/condensation and multicomponent reactive solute transport with kinetic dissolution of pyrite and siderite and local-equilibrium dissolution/precipitation of calcite, ferrihydrite, dolomite, gypsum and quartz. Model results reproduce measured vapor flow, liquid pressure and hydrochemical data and capture the trends of measured relative humidities, although such data are slightly overestimated near the rock interface due to uncertainties in the turbulence factor. Rock desaturation allows oxygen to diffuse into the rock and triggers pyrite oxidation, dissolution of calcite and siderite, precipitation of ferrihydrite, dolomite and gypsum and cation exchange. pH in the unsaturated rock varies from 7.8 to 8 and is buffered by calcite. Computed changes in the porosity and the permeability of Opalinus clay in the unsaturated zone caused by oxidation and mineral dissolution/precipitation are smaller than 5%. Therefore, rock properties are not expected to be affected significantly by ventilation of underground drifts during construction and operational phases of a HLW repository in clay.

  8. Effects of multi-component diffusion and heat release on laminar diffusion flame liftoff

    SciTech Connect (OSTI)

    Li, Zhiliang; Chen, Ruey-Hung [Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450 (United States); Phuoc, Tran X. [National Energy Technology Laboratory, Department of Energy, P.O. Box 10940, MS 84-340, Pittsburgh, PA 15261 (United States)

    2010-08-15T23:59:59.000Z

    Numerical simulations were conducted of the liftoff and stabilization phenomena of laminar jet diffusion flames of inert-diluted C{sub 3}H{sub 8} and CH{sub 4} fuels. Both non-reacting and reacting jets were investigated, including multi-component diffusivities and heat release effects (buoyancy and gas expansion). The role of Schmidt number for non-reacting jets was investigated, with no conclusive Schmidt number criterion for liftoff previously arrived at in similarity solutions. The cold-flow simulation for He-diluted CH{sub 4} fuel does not predict flame liftoff; however, adding heat release reaction lead to the prediction of liftoff, which is consistent with experimental observations. Including reaction was also found to improve liftoff height prediction for C{sub 3}H{sub 8} flames, with the flame base location differing from that in the similarity solution - the intersection of the stoichiometric and iso-velocity (equal to 1-D flame speed) is not necessary for flame stabilization (and thus liftoff). Possible mechanisms other than that proposed for similarity solution may better help to explain the stabilization and liftoff phenomena. (author)

  9. Modeling solute redistribution and microstructural development in fusion welds of multi-component alloys

    SciTech Connect (OSTI)

    Dupont, J.N.; Robino, C.V.; Newbury, B.D.

    1999-12-15T23:59:59.000Z

    Solute redistribution and microstructural evolution have been modeled for gas tungsten arc fusion welds in experimental Ni base superalloys. The multi-component alloys were modeled as a pseudo-ternary {gamma}-Nb-C system. The variation in fraction liquid and liquid composition during the primary L {r{underscore}arrow} {gamma} and eutectic type L {r{underscore}arrow} ({gamma} + NbC) stages of solidification were calculated for conditions of negligible Nb diffusion and infinitely rapid C diffusion in the solid phase. Input parameters were estimated by using the Thermo-Calc NiFe Alloy data base and compared to experimentally determined solidification parameters. The solidification model results provide useful information for qualitatively interpreting the influence of alloy composition on weld microstructure. The quantitative comparisons indicate that, for the alloy system evaluated, the thermodynamic database provides sufficiently accurate values for the distribution coefficients of Nb and C. The calculated position of the {gamma}-NbC two-fold saturation line produces inaccurate results when used as inputs for the model, indicating further refinement to the database is needed for quantitative estimates.

  10. Nuclear Tools For Oilfield Logging-While-Drilling Applications

    SciTech Connect (OSTI)

    Reijonen, Jani [Schlumberger PTC, 20 Wallace Rd., Princeton Junction, NJ 08550 (United States)

    2011-06-01T23:59:59.000Z

    Schlumberger is an international oilfield service company with nearly 80,000 employees of 140 nationalities, operating globally in 80 countries. As a market leader in oilfield services, Schlumberger has developed a suite of technologies to assess the downhole environment, including, among others, electromagnetic, seismic, chemical, and nuclear measurements. In the past 10 years there has been a radical shift in the oilfield service industry from traditional wireline measurements to logging-while-drilling (LWD) analysis. For LWD measurements, the analysis is performed and the instruments are operated while the borehole is being drilled. The high temperature, high shock, and extreme vibration environment of LWD imposes stringent requirements for the devices used in these applications. This has a significant impact on the design of the components and subcomponents of a downhole tool. Another significant change in the past few years for nuclear-based oilwell logging tools is the desire to replace the sealed radioisotope sources with active, electronic ones. These active radiation sources provide great benefits compared to the isotopic sources, ranging from handling and safety to nonproliferation and well contamination issues. The challenge is to develop electronic generators that have a high degree of reliability for the entire lifetime of a downhole tool. LWD tool testing and operations are highlighted with particular emphasis on electronic radiation sources and nuclear detectors for the downhole environment.

  11. The targeted delivery of multicomponent cargos to cancer cells by nanoporous particle-supported lipid bilayers http://www.bioportfolio.com/news/article/620380/The-Targeted-Delivery-Of-Multicomponent-Cargos-To-Cancer-Cells-By-Nanoporous-Particle.html[4/21/

    E-Print Network [OSTI]

    Brinker, C. Jeffrey

    and Conferences Corporate Events Gene Channels News Publish Report Store Resources Video Prostate Cancer Treatment Learn about innovative treatments for Prostate Cancer diagnosis today CancerThe targeted delivery of multicomponent cargos to cancer cells by nanoporous particle

  12. Illegal Logging The US Forest Service, through its International Programs office, actively works around the globe to

    E-Print Network [OSTI]

    Illegal Logging The US Forest Service, through its International Programs office, actively works around the globe to reduce illegal logging. Illegal logging is a complex problem with myriad implications in various discrete aspects of the fight against illegal logging (for example, The US Department

  13. Published on Africa EU (http://www.africa-eu-partnership.org) Home > News > Cameroon axes illegal logging > Printer-friendly

    E-Print Network [OSTI]

    Published on Africa EU (http://www.africa-eu-partnership.org) Home > News > Cameroon axes illegal logging > Printer-friendly Cameroon axes illegal logging 14/05/2010 Cameroon axes illegal logging Illegal and trade of illegal logging. The latest country to sign up to the programme is Cameroon, which completed

  14. Coal log pipeline research at University of Missouri. 1. quarterly report for 1996, January 1--March 31, 1996

    SciTech Connect (OSTI)

    NONE

    1996-07-01T23:59:59.000Z

    This project consists of the following nine tasks: Machine design for coal log fabrication; Very rapid compaction of coal logs; Rapid compaction of coal logs; Fast-track experiments on coal log compaction; Coal log fabrication using hydrophobic binders; Drag reduction in large diameter hydraulic capsule pipeline; Automatic control of coal log pipeline system; Hydraulics of CLP (Coal Log Pipeline); and Coal heating system research. The purpose of the task, the work accomplished during this report period, and work proposed for the next quarter are described for each task.

  15. Forward Modeling of the Induction Log Response of a Fractured Geologic Formation

    E-Print Network [OSTI]

    Bray, Steven Hunter

    2013-05-02T23:59:59.000Z

    3.1 Layered Earth Model The environment used for the induction log simulations is a layered Earth model. The model consists of six layers that are assigned different thicknesses and conductivities based on the desired induction log... Tx-Rx pair has a fixed separation and is moved along a vertical profile through the subsurface taking measurements at predetermined logging points. 20 The second change to the original Seatem code involves the surrounding environment. The code...

  16. Forward Modeling of the Induction Log Response of a Fractured Geologic Formation 

    E-Print Network [OSTI]

    Bray, Steven Hunter

    2013-05-02T23:59:59.000Z

    3.1 Layered Earth Model The environment used for the induction log simulations is a layered Earth model. The model consists of six layers that are assigned different thicknesses and conductivities based on the desired induction log... Tx-Rx pair has a fixed separation and is moved along a vertical profile through the subsurface taking measurements at predetermined logging points. 20 The second change to the original Seatem code involves the surrounding environment. The code...

  17. Vaporization modeling of petroleum-biofuel drops using a hybrid multi-component approach

    SciTech Connect (OSTI)

    Zhang, Lei; Kong, Song-Charng [Department of Mechanical Engineering, Iowa State University, 2025 Black Engineering Building, Ames, IA 50011 (United States)

    2010-11-15T23:59:59.000Z

    Numerical modeling of the vaporization characteristics of multi-component fuel mixtures is performed in this study. The fuel mixtures studied include those of binary components, biodiesel, diesel-biodiesel, and gasoline-ethanol. The use of biofuels has become increasingly important for reasons of environmental sustainability. Biofuels are often blended with petroleum fuels, and the detailed understanding of the vaporization process is essential to designing a clean and efficient combustion system. In this study, a hybrid vaporization model is developed that uses continuous thermodynamics to describe petroleum fuels and discrete components to represent biofuels. The model is validated using the experimental data of n-heptane, n-heptane-n-decane mixture, and biodiesel. Since biodiesel properties are not universal due to the variation in feedstock, methods for predicting biodiesel properties based on the five dominant fatty acid components are introduced. Good levels of agreement in the predicted and measured drop size histories are obtained. Furthermore, in modeling the diesel-biodiesel drop, results show that the drop lifetime increases with the biodiesel concentration in the blend. During vaporization, only the lighter components of diesel fuel vaporize at the beginning. Biodiesel components do not vaporize until some time during the vaporization process. On the other hand, results of gasoline-ethanol drops indicate that both fuels start to vaporize once the process begins. At the beginning, the lighter components of gasoline have a slightly higher vaporization rate than ethanol. After a certain time, ethanol vaporizes faster than the remaining gasoline components. At the end, the drop reduces to a regular gasoline drop with heavier components. Overall, the drop lifetime increases as the concentration of ethanol increases in the drop due to the higher latent heat. (author)

  18. Temperatures and Natural Gamma-Ray Logs Obtained in 1986 from...

    Open Energy Info (EERE)

    Changes in temperature logs run in July and September appear to result from fluid loss to the formation during and following drilling and possibly to ground shaking...

  19. Closure of logging wounds after 10 years. Forest Service research paper (Final)

    SciTech Connect (OSTI)

    Smith, H.C.; Miller, G.W.; Schuler, T.M.

    1994-09-01T23:59:59.000Z

    Closure of logging wounds on 96 sample trees was evaluated after 2, 5, and 10 years for Appalachian hardwood trees in north-central West Virginia. For yellow-poplar, northern red oak, black cherry, and white oak, many small wounds, 1 to 50 square inches in size, closed between 5 and 10 years after logging. For larger wounds, 50 to 200 square inches, it appears that many of these wounds may not close for at least 15 or perhaps 20 years after logging. Recommendations are provided to minimize logging wounds on residual trees in partially cut stands.

  20. Well-posedness, global existence and blow-up phenomena for an integrable multi-component Camassa-Holm system

    E-Print Network [OSTI]

    Zeng Zhang; Zhaoyang Yin

    2014-11-24T23:59:59.000Z

    This paper is concerned with a multi-component Camassa-Holm system, which has been proven to be integrable and has peakon solutions. This system includes many one-component and two-component Camassa-Holm type systems as special cases. In this paper, we first establish the local well-posedness and a continuation criterion for the system, then we present several global existence or blow-up results for two important integrable two-component subsystems. Our obtained results cover and improve recent results in \\cite{Gui,yan}.

  1. Multicomponent aerosol dynamic of the Pb-O[sub 2] system in a bench scale flame incinerator

    SciTech Connect (OSTI)

    Lin, W.Y.; Sethi, V.; Biswas, P.

    1992-01-01T23:59:59.000Z

    The article gives results of a study to understand the formation and growth of lead particles in a flame incinerator. A bench scale flame incinerator was used to perform controlled experiments with lead acetate as a test compound. A dilution probe (in conjunction with real-time aerosol instruments) was used to measure the evolution of the particle size distribution at different locations in the flame region. A multicomponent lognormal aerosol model was developed accounting for the chemistry of the lead-oxygen system, and for such aerosol dynamic phenomena as nucleation, coagulation, and condensation. Reasonable agreement was obtained between the predictions of the model using appropriate kinetic parameters and the experimental results.

  2. Measuring the Effect of Selective Logging on Tropical Forest-Atmosphere Exchange

    E-Print Network [OSTI]

    Goulden, Michael L.

    and low impact extraction methods 1. Conventional Selective Logging: ·Large percent of canopy/soil can takes advantage of newly available PAR. · Reduced Impact Logging and/or Light Harvest resulted in little disturbance. · These are dry season data - chambers indicate decomposition is water limited. POSSIBLE

  3. PROCESS MINING OF EVENT LOGS IN AUDITING: OPPORTUNITIES AND Hasselt University

    E-Print Network [OSTI]

    Lin, Xiaodong

    1 PROCESS MINING OF EVENT LOGS IN AUDITING: OPPORTUNITIES AND CHALLENGES Mieke Jans Hasselt 15, 20101 1 Comments are welcome and may be addressed to mieke.jans@uhasselt.be. #12;2 PROCESS MINING that process mining of event logs can provide to internal and external auditors. Process mining aims to extract

  4. Synthesis of Multipole Acoustic Logging Measurements Using the Generalized Reflection/Transmission Matrices Method

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Synthesis of Multipole Acoustic Logging Measurements Using the Generalized Reflection, the Thomson-Haskell method is the only analytical method available to simulate multipole acoustic logging is slower than the compressional velocity of the drilling fluid in the borehole. Because a multipole tool

  5. 120 Forest Products Company Gather to Combat Illegal Logging March 20, 2005

    E-Print Network [OSTI]

    120 Forest Products Company Gather to Combat Illegal Logging March 20, 2005 Geneva - More than 120 wood flooring companies in China. "We all must work together to eliminate illegal logging. Government forest products company representatives, government officials and conservationists gathered this week

  6. Annual Logging Symposium, June 3-6, 2007 QUANTITATIVE STUDIES OF RELATIVE DIP ANGLE AND BED -

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPWLA 48th Annual Logging Symposium, June 3-6, 2007 1 QUANTITATIVE STUDIES OF RELATIVE DIP ANGLE; Chevron Energy Technology Company Copyright 2007, held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting authors. This paper was prepared for presentation at the SPWLA

  7. Illegal logging on Penan traditional landin Sarawak, Malaysia (Photo by Angelo Musco)

    E-Print Network [OSTI]

    Illegal logging on Penan traditional landin Sarawak, Malaysia (Photo by Angelo Musco) New Global Alliance Formed to Undercut Illegal Logging Print this page WASHINGTON, DC, May 26, 2010 (ENS) - To reduce of the World Resources Institute, one of the founding members of the Alliance. "Some companies are not aware

  8. ORIGINALS ORIGINALARBEITEN The effect of log heating temperature on the peeling process

    E-Print Network [OSTI]

    Boyer, Edmond

    with deeper and more spaced checks than high temperatures when checks are closer and less deep, becoming even by soaking--immersing the whole logs in hot water basins--or by steaming them in vats. These traditionalORIGINALS ORIGINALARBEITEN The effect of log heating temperature on the peeling process and veneer

  9. LOG-SPECTRAL AMPLITUDE ESTIMATION WITH GENERALIZED GAMMA DISTRIBUTIONS FOR SPEECH ENHANCEMENT

    E-Print Network [OSTI]

    Alwan, Abeer

    LOG-SPECTRAL AMPLITUDE ESTIMATION WITH GENERALIZED GAMMA DISTRIBUTIONS FOR SPEECH ENHANCEMENT Bengt enhancement. Generalized Gamma distributed (GGD) priors are assumed for speech short-time spectral amplitudes by Ephraim and Malah [2]. Index Terms-- Speech Enhancement, Log-spectral Amplitude Estimator, Generalized

  10. P2P Logging and Timestamping for Reconciliation Mounir Tlili, W. Kokou Dedzoe,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    P2P Logging and Timestamping for Reconciliation Mounir Tlili, W. Kokou Dedzoe, Esther Pacitti-INRIA {FirstName.LastName}@loria.fr ABSTRACT In this paper, we address data reconciliation in peer-to-peer (P2P) collaborative applications. We propose P2P-LTR (Logging and Timestamping for Reconciliation) which provides P2P

  11. Setting Your Moodle Profile 1) Log into Moodle at http://moodle.njit.edu.

    E-Print Network [OSTI]

    Bieber, Michael

    Setting Your Moodle Profile 1) Log into Moodle at http://moodle.njit.edu. 2) After logging in users: Expanding a folder 4) After entering the course, click on the "Profile" link under the "Administration" block. See Figure 3. Figure 3: "Profile" link #12;5) Click on the "Edit profile" tab. It is the second

  12. Geological Attributes from Conventional Well Logs: Relating Rock Types to Depositional Facies in Deepwater Turbidite Reservoirs

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPE 166178 Geological Attributes from Conventional Well Logs: Relating Rock Types to Depositional. The objective of this paper is to quantitatively classify rock and bed types based on conventional well logs to assist facies interpretation and stratigraphic reservoir modeling. We model physical properties and well

  13. SPE 159255-PP Rock Classification from Conventional Well Logs in Hydrocarbon-Bearing

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    typing method for application in hydrocarbon-bearing shale (specifically source rock) reservoirs using conventional well logs and core data. Source rock reservoirs are known to be highly heterogeneous and often, petrophysical description of source rock reservoirs with well logs has been focused to quantifying rock

  14. Integration of Geology, Rock-Physics, Logs, and Pre-stack Seismic for Reservoir Porosity Estimation

    E-Print Network [OSTI]

    Al Muhaidib, Abdulaziz

    2011-01-01T23:59:59.000Z

    The main objective of this paper is to obtain reservoir properties, such as porosity, both at the well locations and in the inter-well regions from seismic data and well logs. The seismic and well-log datasets are from an ...

  15. Efficient SIMD technique with parallel Max-Log-MAP Algorithm for Turbo Decoders

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Efficient SIMD technique with parallel Max-Log-MAP Algorithm for Turbo Decoders David Gnaedig Turbo on a DSP a parallel Max-Log-MAP algorithm for turbo decoders. It consists in using SIMD instructions by the use of an adapted two-dimensional turbo code and its parallel interleaver structure. After a brief

  16. Report reveals dramatic decline in illegal logging in tropical forest nations

    E-Print Network [OSTI]

    Report reveals dramatic decline in illegal logging in tropical forest nations July 15th, 2010 in Space & Earth / Environment The most thorough assessment to date of the global fight against illegal climate. According to the report, "Illegal Logging and Related Trade: Indicators of the Global Response

  17. A Flexible Architecture for Statistical Learning and Data Mining from System Log Streams

    E-Print Network [OSTI]

    Xu, Wei

    A Flexible Architecture for Statistical Learning and Data Mining from System Log Streams Wei Xu. Human operators monitoring the sys- tem use the log data and their experience to detect failures information than the operators can discern. The data might be used to predict that a particular machine

  18. Mining Logs Files for Data-Driven System Management School of Computer Science

    E-Print Network [OSTI]

    Li, Tao

    Mining Logs Files for Data-Driven System Management Wei Peng School of Computer Science Florida of the log files have been less emphasized in existing methods from data mining and machine learning in data representation pose new challenges. In this paper, we will describe our research efforts on mining

  19. Invited Applications Paper Detecting Large-Scale System Problems by Mining Console Logs

    E-Print Network [OSTI]

    Xu, Wei

    . Researchers and operators have been using all kinds of mon- itoring data, from the simplest numerical metrics Problems by Mining Console Logs part operator, and charged with fixing the problem-- are usuallyInvited Applications Paper Detecting Large-Scale System Problems by Mining Console Logs Wei Xu xuw

  20. Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels

    E-Print Network [OSTI]

    Kavcic, Aleksandar

    Computing Reliability Distributions of Windowed Max-log-map (MLM) Detectors : ISI Channels Fabian-log-map (MLM) detector has well-known appli- cations to the intersymbol interefence (ISI) channel [1, · · · , is trans- mitted across the ISI channel. Let the following random This work was performed when F. Lim

  1. Annual Logging Symposium, June 19-23, 2010 IMPROVED ESTIMATION OF MINERAL

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    concentration of shale, and volumetric concentrations of mineral constituents in the presence of complex min- eral compositions, invasion, and shoulder beds. The method assumes a multi-layer reservoir model con concentrations from well logs, core data, and geological logs are nec- essary for the accurate estimation

  2. Fluid-Rock Characterization and Interactions in NMR Well Logging

    SciTech Connect (OSTI)

    Hirasaki, George J.; Mohanty, Kishore, K.

    2001-07-13T23:59:59.000Z

    The objective of this project is to characterize the fluid properties and fluid-rock interactions that are needed for formation evaluation by NMR well logging. This is the first annual progress report submitted to the DOE. It reports on the work completed during the reporting period even if it may have started before this period. This project is a partnership between Professor George J. Hirasaki at Rice University and Professor Kishore Mohanty at University of Houston. In addition to the DOE, this project is supported by a consortium of oil companies and service companies. The fluid properties characterization has emphasized the departure of live oils from correlations based on dead oils. Also, asphaltic components can result in a difference between the T1 and T2 relaxation time distributions as well as reduce the hydrogen index. The fluid rock characterizations that are reported here are the effects of wettability and internal magnetic field gradients. A pore reconstruction method ha s been developed to recreate three-dimensional porous media from two-dimensional images that reproduce some of their key statistical properties. A Monte Carlo simulation technique has been developed to calculate the magnetization decay in fluid saturated porous media given their pore structure.

  3. Potential impacts of tighter Forest Service log export restrictions

    SciTech Connect (OSTI)

    Not Available

    1985-01-28T23:59:59.000Z

    Federal law restricts the export of unprocessed timber cut from national forests in the western half of the United States. Also, purchasers of national forest timber are restricted from substituting timber harvested from federal lands for privately owned timber that they export. GAO reviewed the magnitude of and the potential impacts from extending the substitution restriction to cover third parties who subsequently acquire Forest Service timber from the original purchasers - an export industry practice commonly referred to as third-party substitution. According to the Forest Service and timber industry associations, third-party substitution approximates 100 million board feet annually in the western United States. They said that if the practice were banned, some companies could acquire national forest timber at lower prices because of decreased demand and competition, and the lower prices would result in less government revenues. Also, a ban could disrupt traditional log markets and business practices. The Forest Service believes it could not enforce a ban on third-party substitution without additional legal authority and staff.

  4. Logging anomalies key to 100-bcf, shallow gas play

    SciTech Connect (OSTI)

    Cook, P.L. Jr. (Cook Energy, Inc. (US)); Scheneeflock, R.D.; Bush, J.D.; Marble, J.C. (Paramount Petroleum Co., Inc., Jackson, MI (US))

    1991-09-01T23:59:59.000Z

    The upper cretaceous Eutaw formation of Mississippi has produced almost 2 Tcf of gas since its initial discovery at Gwinville field in 1944. Prior to the discovery of Trimble field in 1988, the last major Eutaw gas discovery in Mississippi was at Maxie-Pistol Ridge field in 1951. Consequently, the Trimble discovery is the most important shallow gas find in the Interior Salt Basin in nearly 40 years. Trimble field now contains 21 wells, with gas reserves in excess of 100 bcfg and maximum daily production averaging 42 MMcfd. As of January 1991, Trimble field has produced 12.2 Bcfg and 67,688 bbl condensate from 21 wells. Annual gas production for 1991 is expected to be 12 Bcfg. This article focuses on the log evaluation techniques developed to aid in the recognition of the low-resistivity Eutaw pay. Trimble field is an excellent example of how an anomalous set of occurrences in a trend can lead to new exploration opportunities. For a more detailed look at this case study, readers are referred to the 1990 Transaction of the Gulf Coast Association of Geological Societies annual meeting.

  5. Coal-log pipeline system development. Fifth quarterly report, August 25, 1991--November 25, 1991

    SciTech Connect (OSTI)

    Liu, H.

    1991-12-01T23:59:59.000Z

    Project tasks include: (1) Perform the necessary testing and development to demonstrate that the amount of binder in coal logs can be reduced to 8% or lower to produce logs with adequate strength to eliminate breakage during pipeline transportation, under conditions experienced in long distance pipeline systems. Prior to conducting any testing and demonstration, grantee shall perform an information search and make full determination of all previous attempts to extrude or briquette coal, upon which the testing and demonstration shall be based. (2) Perform the necessary development to demonstrate a small model of the most promising injection system for coal-logs, and tests the logs produced. (3) Conduct economic analysis of coal-log pipeline, based upon the work to date. Refine and complete the economic model. (VC)

  6. Cooling rate and size effects on the medium-range structure of multicomponent oxide glasses simulated by molecular dynamics

    SciTech Connect (OSTI)

    Tilocca, Antonio [Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ (United Kingdom)] [Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ (United Kingdom)

    2013-09-21T23:59:59.000Z

    A set of molecular dynamics simulations were performed to investigate the effect of cooling rate and system size on the medium-range structure of melt-derived multicomponent silicate glasses, represented by the quaternary 45S5 Bioglass composition. Given the significant impact of the glass degradation on applications of these materials in biomedicine and nuclear waste disposal, bulk structural features which directly affect the glass dissolution process are of particular interest. Connectivity of the silicate matrix, ion clustering and nanosegregation, distribution of ring and chain structural patterns represent critical features in this context, which can be directly extracted from the models. A key issue is represented by the effect of the computational approach on the corresponding glass models, especially in light of recent indications questioning the suitability of conventional MD approaches (that is, involving melt-and-quench of systems containing ?10{sup 3} atoms at cooling rates of 5-10 K/ps) when applied to model these glasses. The analysis presented here compares MD models obtained with conventional and nonconventional cooling rates and system sizes, highlighting the trend and range of convergence of specific structural features in the medium range. The present results show that time-consuming computational approaches involving much lower cooling rates and/or significantly larger system sizes are in most cases not necessary in order to obtain a reliable description of the medium-range structure of multicomponent glasses. We identify the convergence range for specific properties and use them to discuss models of several glass compositions for which a possible influence of cooling-rate or size effects had been previously hypothesized. The trends highlighted here represent an important reference to obtain reliable models of multicomponent glasses and extract converged medium-range structural features which affect the glass degradation and thus their application in different fields. In addition, as a first application of the present findings, the fully converged structure of the 45S5 glass was further analyzed to shed new light on several dissolution-related features whose interpretation has been rather controversial in the past.

  7. Impact of in-woods product merchandizing on profitable logging opportunities in southern upland hardwood forests. Forest Service research paper

    SciTech Connect (OSTI)

    May, D.M.; LeDoux, C.B.; Tansey, J.B.; Widmann, R.

    1994-04-01T23:59:59.000Z

    The report estimates profitable logging opportunities existing in upland hardwood forests in 14 Southern States and demonstrates the impact of three alternative product-merchandizing options on profitable logging opportunities and profit margins.

  8. Forest cover change and illegal logging in the Ukrainian Carpathians in the transition period from 1988 to 2007

    E-Print Network [OSTI]

    Vermont, University of

    Forest cover change and illegal logging in the Ukrainian Carpathians in the transition period from 2009 Keywords: Forest harvesting Illegal logging Forest disturbance Landsat Support vector machines Ukraine Carpathians Forest inventory data Forest resource assessment Post-socialist transition Illegal

  9. 9/17/12 Lessons from the US: stopping illegal logging benefits both sides of politics 1/3theconversation.edu.au/lessons-from-the-us-stopping-illegal-logging-benefits-both-sides-of-politics-9529

    E-Print Network [OSTI]

    9/17/12 Lessons from the US: stopping illegal logging benefits both sides of politics 1/3theconversation.edu.au/lessons-from-the-us-stopping-illegal-logging-benefits-both-sides-of-politics-9529 In the US Congress, it was hard to find an opponent to stopping illegal logging. CIFOR Search search our articles

  10. Economic impact of log grade on the production of plywood and lumber

    E-Print Network [OSTI]

    Ledford, Donald Wayne

    1986-01-01T23:59:59.000Z

    and lumber. Product recovery studies were conducted for a band headsaw, a chip-n-saw, a chip-n-saw stud mill, a plywood mill peeling I/8" veneer, and a plywood mill peeling I/6" veneer. The relationship of volume and grade of product recovery... samples at the stud mill, expressed in percent of total lumber production from the log sample 66 18. Log samples peeled to 1/8" veneer with recoveries of dry veneer 69 Plywood production (1/8" veneer) per ton of log input 71 19b Plywood production...

  11. Logging into Deltek Time & Expense (T&E) | The Ames Laboratory

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatestCenterLogging in Logging in to FranklinLogging

  12. Identifying Complex Fluvial Sandstone Reservoirs Using Core, Well Log, and 3D Seismic Data: Cretaceous Cedar Mountain and Dakota Formations,

    E-Print Network [OSTI]

    Seamons, Kent E.

    core, well-log, and 3D seismic data. The detailed stratigraphy and sedimentology of the interval were

  13. Solution of the associative mean spherical approximation for a multicomponent dimerizing hard-sphere multi-Yukawa fluid

    SciTech Connect (OSTI)

    Kalyuzhnyi, Yu. V. [Institute for Condensed Matter Physics, Svientsitskoho 1, 290011 Lviv, (Ukraine)] [Institute for Condensed Matter Physics, Svientsitskoho 1, 290011 Lviv, (Ukraine); Blum, L. [Department of Physics, University of Puerto Rico, Rio Piedras, Puerto Rico 00931 (Puerto Rico)] [Department of Physics, University of Puerto Rico, Rio Piedras, Puerto Rico 00931 (Puerto Rico); Rescic, J. [Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1001 Ljubljana, (Slovenia)] [Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1001 Ljubljana, (Slovenia); Stell, G. [Department of Chemistry, State University of New York at Stony Brook, New York 11794-3400 (United States)] [Department of Chemistry, State University of New York at Stony Brook, New York 11794-3400 (United States)

    2000-07-15T23:59:59.000Z

    The analytical solution of the associative mean spherical approximation (AMSA) for a Yukawa dimerizing multicomponent hard-sphere fluid is derived. The general multi-Yukawa case is discussed. The simpler one-Yukawa case with factorizable coefficients is explicitly solved. As in the previously discussed electrolyte case the solution of the AMSA reduces to the solution of only one nonlinear algebraic equation for the scaling parameter {gamma}{sup B}. The analytical results for the AMSA closure is illustrated by numerical examples and computer simulation for the one-component one-Yukawa dimerizing fluid. Good agreement between theoretical and computer simulation results was found for both the thermodynamic properties and the structure of the system. (c) 2000 American Institute of Physics.

  14. Modeling of metallic aerosol formation in a multicomponent system at high temperatures using a discrete-sectional model. Appendix 7

    SciTech Connect (OSTI)

    NONE

    1997-02-01T23:59:59.000Z

    A multicomponent discrete-sectional model was used to simulate the fate of lead in a high temperature system. The results show the ability of the developed model to simulate metallic aerosol systems at high temperatures. The PbO reaction and nucleation rate can be determined by comparing the simulations and the experimental data. Condensation on SiO{sub 2} particle surfaces is found important for removing the PbO vapor. The value of the accommodation factor that is applied to account for nonidealities in the condensation process are determined. The differences between the nanosized particles and the bulk particles are elucidated. The use of such a model helped to understand the effects of various mechanisms in determining the metal oxide vapor concentration profile and in establishing the ultimate particle size distribution.

  15. Numerical simulation of borehole acoustic logging in the frequency and time domains with hp-adaptive finite elements

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    and for the improvement of acoustic logging techniques used by oil- and oil-service companies to detect and quantifyNumerical simulation of borehole acoustic logging in the frequency and time domains with hp Available online 8 January 2009 Keywords: Acoustic logging Borehole acoustics Wave propagation Linear

  16. May 20, 2002: Illegal Logging Threatens Ecological and Economic Stability Update 11: May 21, 2002-7

    E-Print Network [OSTI]

    companies with flood-related claims. Rampant deforestation, much of it from illegal logging, has destroyedMay 20, 2002: Illegal Logging Threatens Ecological and Economic Stability Update 11: May 21, 2002-7 Copyright © 2002 Earth Policy Institute Illegal Logging Threatens Ecological and Economic Stability Janet

  17. Figure 1. Block diagram of the turbo decoder. A Memory-Reduced Log-MAP Kernel for Turbo Decoder

    E-Print Network [OSTI]

    Hung, Shih-Hao

    Figure 1. Block diagram of the turbo decoder. A Memory-Reduced Log-MAP Kernel for Turbo Decoder--Generally, the Log-MAP kernel of the turbo decoding consume large memories in hardware implement- tation of the turbo decoder is implemented to verify the proposed memory-reduced Log- MAP kernel in 3.04Ã?3.04mm2 core

  18. Action on illegal logging: measuring UNECE/FAO and WTO workshop: Emerging trade measures in timber markets

    E-Print Network [OSTI]

    1 Action on illegal logging: measuring impacts UNECE/FAO and WTO workshop: Emerging trade measures of illegal logging · Chatham House indicators project to assess: ­ Levels of attention ­ Government policy of illegal logging and trade ­ Backed up by survey of experts · Phase 1 study out by June 2010: ­ Producers

  19. Reservoir parameters estimation from well log and core data: a case study from the North Sea

    E-Print Network [OSTI]

    Edinburgh, University of

    is based on matching core and log data, and the linear and non-linear regressions are then used to build. Second, linear and non- linear regression are employed to derive porosity, shale vol- umes, clay contents

  20. Integrating User Feedback Log into Relevance Feedback by Coupled SVM for Content-Based Image Retrieval

    E-Print Network [OSTI]

    Lyu, Michael R.

    , the user feedback log is one of the most important resources to bridge the seman- tic gap problem in image to re- peat many rounds of feedback in order to achieve satisfac- tory results. Hence, the learning task

  1. Sonic Logging in Deviated Boreholes in an Anisotropic Formation: Laboratory Study

    E-Print Network [OSTI]

    Zhu, Zhenya

    2006-01-01T23:59:59.000Z

    Deepwater field development requires drilling of deviated or horizontal wells. Most formations encountered can be highly anisotropic and P- and S-wave velocities vary with propagation directions. Sonic logs acquired in ...

  2. High-energy photon transport modeling for oil-well logging

    E-Print Network [OSTI]

    Johnson, Erik D., Ph. D. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    Nuclear oil well logging tools utilizing radioisotope sources of photons are used ubiquitously in oilfields throughout the world. Because of safety and security concerns, there is renewed interest in shifting to ...

  3. Annual Logging Symposium, June 21-24, 2009 HISTORY MATCHING OF MULTIPHASE-FLOW FORMATION-

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    SPWLA 50th Annual Logging Symposium, June 21-24, 2009 1 HISTORY MATCHING OF MULTIPHASE-phase analytical techniques. We describe the successful application of a three- dimensional (3D) multiphase

  4. Lithology and well log study of Campbell E-2 geothermal test...

    Open Energy Info (EERE)

    Pershing County, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Lithology and well log study of Campbell E-2 geothermal test well,...

  5. Using Interactive Visualizations of WWW Log Data to Characterize Access Patterns and Inform Site Design

    E-Print Network [OSTI]

    Golbeck, Jennifer

    Design Harry Hochheiser, Ben Shneiderman* Human­Computer Interaction Lab, Department of Computer Science, and facilities for zooming and filtering, these visualizations provide capabilities for examining data World Wide Web, Web Site Design, Log File Analysis, Information Visualization, Human

  6. Using Interactive Visualizations of WWW Log Data to Characterize Access Patterns and Inform Site Design

    E-Print Network [OSTI]

    Golbeck, Jennifer

    Design Harry Hochheiser, Ben Shneiderman* Human-Computer Interaction Lab, Department of Computer Science, and facilities for zooming and filtering, these visualizations provide capabilities for examining data World Wide Web, Web Site Design, Log File Analysis, Information Visualization, Human

  7. A Semantic Perspective on Query Log Analysis Katja Hofmann Maarten de Rijke Bouke Huurnink Edgar Meij

    E-Print Network [OSTI]

    de Rijke, Maarten

    A Semantic Perspective on Query Log Analysis Katja Hofmann Maarten de Rijke Bouke Huurnink Edgar Meij ISLA, University of Amsterdam k.hofmann@uva.nl, mdr@science.uva.nl bhuurnink@uva.nl, edgar

  8. Interpretation of Array Production Logging Measurements in Horizontal Wells for Flow Profile

    E-Print Network [OSTI]

    Liao, Lulu

    2013-12-12T23:59:59.000Z

    and possible back flow of denser phases result in misinterpretation of the inflow distribution. To assess the downhole flow conditions more accurately, logging tools have been developed to overcome the flow regime related issues. Multiple-sensor array tools...

  9. Reduced impact logging minimally alters tropical rainforest carbon and energy exchange

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Brazil | Amazon | land use | micrometeorology D eforestation in the tropics affects the land–atmosphere ex- change of trace gases and energyand energy (W·m ?2 ) ?uxes, calculated as (? = logged ? unlogged), in Tapajos National Forest, Para, Brazil.

  10. FORTRAN algorithm for correcting normal resistivity logs for borehold diameter and mud resistivity

    SciTech Connect (OSTI)

    Scott, J H

    1983-01-01T23:59:59.000Z

    The FORTRAN algorithm described was developed for applying corrections to normal resistivity logs of any electrode spacing for the effects of drilling mud of known resistivity in boreholes of variable diameter. The corrections are based on Schlumberger departure curves that are applicable to normal logs made with a standard Schlumberger electric logging probe with an electrode diameter of 8.5 cm (3.35 in). The FORTRAN algorithm has been generalized to accommodate logs made with other probes with different electrode diameters. Two simplifying assumptions used by Schlumberger in developing the departure curves also apply to the algorithm: (1) bed thickness is assumed to be infinite (at least 10 times larger than the electrode spacing), and (2) invasion of drilling mud into the formation is assumed to be negligible.

  11. Technical memorandum on analysis of the EU ETS using the community independent transaction log

    E-Print Network [OSTI]

    McGuinness, Meghan

    2007-01-01T23:59:59.000Z

    This memorandum provides an overview of three deficiencies within the current presentation of the Community Independent Transaction Log (CITL) data that have implications for researchers' ability to accurately analyze the ...

  12. Precise inversion of logged slownesses for elastic parameters in a gas shale formation

    E-Print Network [OSTI]

    Miller, Douglas E.

    Dipole sonic log data recorded in a vertical pilot well and the associated production well are analyzed over a 200×1100-ft section of a North American gas shale formation. The combination of these two wells enables angular ...

  13. Study of well logs from Cove Fort-Sulphurdale KGRA, Millard and Beaver Counties, Utah

    SciTech Connect (OSTI)

    Glenn, W.E.; Ross, H.P.

    1982-07-01T23:59:59.000Z

    Union Oil Company drilled four geothermal test wells in the Cove Fort-Sulphurdale KGRA between 1975 and 1979. A fairly complete suite of well logs were recorded for the three deeper holes, and these data are presented as composite well log plots in this report. The composite well log plots have facilitated the interpretation of limestone, dolomite, sandstone, quartz-monzonite, serpentine, and volcanic lithologies and the identification of numerous fractures. This has been especially helpful because of the extensive lost circulaton zones and poor cuttings recovery. Intraformational flow was identified by a fluid migration-temperature tracer log at depth in CFSU 31-33. Well log crossplots were computed to assist in lithologic identification and the determination of physical properties for specific depth intervals in a given hole. The presence of hydrous minerals sometimes results in neutron porosity somewhat higher than the true nonfracture porosity, which is generally less than 4%. Permeability is clearly controlled by fractures. A maximum well temperature of 178.9/sup 0/C, low flow rates and low probable percent flash indicate these wells are subeconomic for electric generation at present. The well log study has substantially improved our understanding of the reservoir as presently drilled.

  14. Results of investigations at the Zunil geothermal field, Guatemala: Well logging and brine geochemistry

    SciTech Connect (OSTI)

    Adams, A.; Dennis, B.; Van Eeckhout, E.; Goff, F.; Lawton, R.; Trujillo, P.E.; Counce, D.; Archuleta, J. (Los Alamos National Lab., NM (USA)); Medina, V. (Instituto Nacional de Electrificacion, Guatemala City (Guatemala). Unidad de Desarollo Geotermico)

    1991-07-01T23:59:59.000Z

    The well logging team from Los Alamos and its counterpart from Central America were tasked to investigate the condition of four producing geothermal wells in the Zunil Geothermal Field. The information obtained would be used to help evaluate the Zunil geothermal reservoir in terms of possible additional drilling and future power plant design. The field activities focused on downhole measurements in four production wells (ZCQ-3, ZCQ-4, ZCQ-5, and ZCQ-6). The teams took measurements of the wells in both static (shut-in) and flowing conditions, using the high-temperature well logging tools developed at Los Alamos National Laboratory. Two well logging missions were conducted in the Zunil field. In October 1988 measurements were made in well ZCQ-3, ZCQ-5, and ZCQ-6. In December 1989 the second field operation logged ZCQ-4 and repeated logs in ZCQ-3. Both field operations included not only well logging but the collecting of numerous fluid samples from both thermal and nonthermal waters. 18 refs., 22 figs., 7 tabs.

  15. DESIGN, SYNTHESIS AND STUDY OF MULTI-COMPONENT AND INTEGRATED SYSTEMS FOR LIGHT-DRIVEN HYDROGEN GENERATION

    SciTech Connect (OSTI)

    Professor Richard Eisenberg

    2012-07-18T23:59:59.000Z

    The research focussed on fundamental problems in the conversion of light to stored chemical energy. Specifically, work was completed on the design, synthesis and study of multi-component super- and supramolecular systems for photoinduced charge separation, one of the key steps in artificial photosynthesis, and on the use of these and related systems for the photochemical generation of H2 from water. At the center of these systems are chromophores comprised of square planar coordinated Pt(II) ions with arylacetylide and either diimine or terpyridyl ligands. Previous work had shown that the chromophores are photoluminescent in fluid solution with long-lived metal-to-ligand charge transfer (3MLCT) excited states that are necessarily directional. An advance which set the stage for a number of proposed studies was the light-driven production of hydrogen from water using a Pt(terpyridyl)(arylacetylide)+ chromophore and a sacrificial electron donor. The reaction is catalytic and appears to rival previously reported ruthenium bipyridyl systems in terms of H2 production. Variation of system components and mechanistic studies were conducted to understand better the individual steps in the overall process and how to improve its efficiency. Success with light driven H2 generation was employed as a key probe as new systems were constructed consisting of triads for photoinduced charge separation placed in close proximity to the H2 generating catalyst - a Pt colloid - through direct linkage or supramolecular interactions with the polymer used to stabilize the colloid. In order to prepare new donor-chromophore-acceptor (D-C-A) triads and associated D-C and C-A dyads, new ligands were synthesized having functional groups for different coupling reactions such as simple amide formation and Pd-catalyzed coupling. In these systems, the donor was attached to the arylacetylide ligands and the acceptor was linked to the diimine or terpyridyl chelate. Research under the contract proved successful in the development of synthetic methodologies to make multi-component systems designed so as to maintain electronic communication between components held in a defined spatial arrangement. Systems effective for light driven H2 generation were examined by photophysical methods including transient absorption spectroscopy to observe charge-separated states and chart their dynamics. Quantum yields for hydrogen production were also measured. Additional studies examined the effectiveness of these systems for H2 generation and involved the development of new catalysts and systems based thereon. From these studies, a better understanding of initial steps in the light driven generation of hydrogen were obtained.

  16. Response transforms from comparative study of commercial pulsed-neutron-capture logging systems

    SciTech Connect (OSTI)

    Salaita, G.N. (Chevron Oil Field Research Co., La Habra, CA (United States))

    1992-09-01T23:59:59.000Z

    This paper reports that three generations of Schlumberger's Thermal Decay Time (TDT{sup SM}) logging devices - viz., TDT-K, TDT-M, and TDT-P - along with an Atlas Wireline PDK-100{sup SM} system were run in a Saudi Aramco well. The wellbore (8 1/2 in. with 7-in. casing) penetrated a sequence of clean sand, shaly sand, and shale streaks as exhibited by the openhole natural gamma ray log. The initial wellbore fluid was diesel. The fluid was then changed to brines of 42,000 and 176,000 ppm NaCl, respectively. Three repeat passes at a logging speed of 900 ft/hr were obtained by each device for each borehole liquid. As a result of this extensive comparative study, a set of departure curves and mathematical transforms was developed primarily for standardizing the various Schlumberger tools to a common reference logging system and/or borehole environment. The transforms were used beneficially to determine residual oil saturation (ROS) from time-lapse logs in a Saudi Aramco reservoir.

  17. Evaluation of Simple Causal Message Logging for Large-Scale Fault Tolerant HPC Systems

    SciTech Connect (OSTI)

    Bronevetsky, G; Meneses, E; Kale, L V

    2011-02-25T23:59:59.000Z

    The era of petascale computing brought machines with hundreds of thousands of processors. The next generation of exascale supercomputers will make available clusters with millions of processors. In those machines, mean time between failures will range from a few minutes to few tens of minutes, making the crash of a processor the common case, instead of a rarity. Parallel applications running on those large machines will need to simultaneously survive crashes and maintain high productivity. To achieve that, fault tolerance techniques will have to go beyond checkpoint/restart, which requires all processors to roll back in case of a failure. Incorporating some form of message logging will provide a framework where only a subset of processors are rolled back after a crash. In this paper, we discuss why a simple causal message logging protocol seems a promising alternative to provide fault tolerance in large supercomputers. As opposed to pessimistic message logging, it has low latency overhead, especially in collective communication operations. Besides, it saves messages when more than one thread is running per processor. Finally, we demonstrate that a simple causal message logging protocol has a faster recovery and a low performance penalty when compared to checkpoint/restart. Running NAS Parallel Benchmarks (CG, MG and BT) on 1024 processors, simple causal message logging has a latency overhead below 5%.

  18. Published on Aotearoa Independent Media Centre (http://www.indymedia.org.nz) Home > Some facts on illegal logging and New Zealand

    E-Print Network [OSTI]

    on illegal logging and New Zealand Some facts on illegal logging and New Zealand By Anonymous Created 07/31/2010 - 13:27 [1]Impact of illegally logged timber on New Zealand economy For the New Zealand forestry sector estimates from the Radiata Pine Market Model suggest that the benefit of eliminating illegal logging is a US

  19. COMMIX-PPC: A three-dimensional transient multicomponent computer program for analyzing performance of power plant condensers

    SciTech Connect (OSTI)

    Chien, T.H.; Domanus, H.M.; Sha, W.T.

    1993-02-01T23:59:59.000Z

    The COMMIX-PPC computer pregrain is an extended and improved version of earlier COMMIX codes and is specifically designed for evaluating the thermal performance of power plant condensers. The COMMIX codes are general-purpose computer programs for the analysis of fluid flow and heat transfer in complex Industrial systems. In COMMIX-PPC, two major features have been added to previously published COMMIX codes. One feature is the incorporation of one-dimensional equations of conservation of mass, momentum, and energy on the tube stile and the proper accounting for the thermal interaction between shell and tube side through the porous-medium approach. The other added feature is the extension of the three-dimensional conservation equations for shell-side flow to treat the flow of a multicomponent medium. COMMIX-PPC is designed to perform steady-state and transient. Three-dimensional analysis of fluid flow with heat transfer tn a power plant condenser. However, the code is designed in a generalized fashion so that, with some modification, it can be used to analyze processes in any heat exchanger or other single-phase engineering applications. Volume I (Equations and Numerics) of this report describes in detail the basic equations, formulation, solution procedures, and models for a phenomena. Volume II (User's Guide and Manual) contains the input instruction, flow charts, sample problems, and descriptions of available options and boundary conditions.

  20. Filtrations in Dyson-Schwinger equations: next-to^{j} -leading log expansions systematically

    E-Print Network [OSTI]

    Olaf Krueger; Dirk Kreimer

    2015-02-11T23:59:59.000Z

    Dyson-Schwinger equations determine the Green functions $G^r(\\alpha,L)$ in quantum field theory. Their solutions are triangular series in a coupling constant $\\alpha$ and an external scale parameter $L$ for a chosen amplitude $r$, with the order in $L$ bounded by the order in the coupling. Perturbation theory calculates the first few orders in $\\alpha$. On the other hand, Dyson--Schwinger equations determine next-to$^{\\{\\mathrm{j}\\}}$-leading log expansions, $G^r(\\alpha,L) = 1 + \\sum_{j=0}^\\infty \\sum_{\\mathcal{M}} p_j^{\\mathcal{M}}\\alpha^j \\mathcal{M}(u)$. $\\sum_{\\mathcal{M}}$ sums a finite number of functions $\\mathcal{M}$ in $u = \\alpha L/2$. The leading logs come from the trivial representation $\\mathcal{M}(u) = \\begin{bsmallmatrix}\\bullet\\end{bsmallmatrix}(u)$ at $j=0$ with $p_0^{\\begin{bsmallmatrix}\\bullet\\end{bsmallmatrix}} = 1$. All non-leading logs are organized by the suppression in powers $\\alpha^j$. We describe an algebraic method to derive all next-to$^{\\{\\mathrm{j}\\}}$-leading log terms from the knowledge of the first $(j+1)$ terms in perturbation theory and their filtrations. This implies the calculation of the functions $\\mathcal{M}(u)$ and periods $p_j^\\mathcal{M}$. In the first part of our paper, we investigate the structure of Dyson-Schwinger equations and develop a method to filter their solutions. Applying renormalized Feynman rules maps each filtered term to a certain power of $\\alpha$ and $L$ in the log-expansion. Based on this, the second part derives the next-to$^{\\{\\mathrm{j}\\}}$-leading log expansions. Our method is general. Here, we exemplify it using the examples of the propagator in Yukawa theory and the photon self-energy in quantum electrodynamics. The reader may apply our method to any (set of) Dyson-Schwinger equation(s) appearing in renormalizable quantum field theories.

  1. Log of a young author's thinking: George W. Cable's "Drop Shot".

    E-Print Network [OSTI]

    Sinitiere, Autry James

    1974-01-01T23:59:59.000Z

    . . t 1974 Major Subject: English LOG OF A YOUNG AUTHOR'S THINKING: GEORGE W CABLE'S "DROP SHOT" A Thesis by AUTRY JAMES SINITIERE Approved as to style and content by: Chairman of Committe Hea of Department M er ember) August 1974 & s ~~. )$, gg... APSTRACT Log of a Young Author's Thinking: George W. Cable's "Drop Shot" (August 1974) Autry James Sinitiere, B. A. , College of Santa Fe Chairman of Advisory Committee: Dr Richard H. Ballinger In February 1870 George W. Cable began writing a * p p...

  2. Non-Archimedian integrals and stringy Euler numbers of log terminal pairs

    E-Print Network [OSTI]

    Victor V. Batyrev

    1998-03-16T23:59:59.000Z

    Using non-Archimedian integration over spaces of arcs of algebraic varieties, we define stringy Euler numbers associated with arbitrary Kawamata log terminal pairs. There is a natural Kawamata log terminal pair corresponding to an algebraic variety V having a regular action of a finite group G. In this situation we show that the stringy Euler number of this pair coincides with the physicists' orbifold Euler number defined by the Dixon-Harvey-Vafa-Witten formula. As an application, we prove a conjecture of Miles Reid on the Euler numbers of crepant desingularizations of Gorenstein quotient singularities.

  3. Logging In Submi ng Assignments To begin th eLogin process, irstnavigateto th eLA

    E-Print Network [OSTI]

    Selmic, Sandra

    epassw ord th atw asassigned to you foryourTech em ailaddress. 3. Now ,clickth e"LogIn"button. Accessing

  4. Fact sheet EU poll illegal timber trade Illegal logging and related timber trade

    E-Print Network [OSTI]

    March 2009 Fact sheet EU poll illegal timber trade Illegal logging and related timber trade Illegal level is needed to halt the trade in illegal timber and timber products on the European market trade. It has clarified obligations for all companies in the supply chain to prove the legality

  5. Do We Need a $15 Million "Illegal Logging Initiative?" by Alan Caruba

    E-Print Network [OSTI]

    harvest by law or represent slow-growing woodlands unsuitable for timber production. Some 490 million no timber may be extracted. You may recall that the Greens have been trying for decades to stop any logging as a "nonprofit organization dedicated to public-private partnerships to protect land and water resources." Let me

  6. Prediction of pressure depletion from wireline and mud logs, Golden Trend field, Garvin County, Oklahoma

    SciTech Connect (OSTI)

    Sorenson, R.P.; White, F.W.; Struckel, J.C.

    1987-08-01T23:59:59.000Z

    The Golden Trend, a giant oil field encompassing several overlapping Pennsylvanian stratigraphic traps on the eastern flank of the Anadarko basin, has undergone a resurgence in the 1980s with deeper drilling for pre-Pennsylvanian targets. Approximately 200 new wells in and near the Antioch Southwest, Panther Creek, and Elmore Northeast waterflood units (T2, 3N, R2, 3W) have encountered evidence of undrained reserves in both established and new pay intervals of Pennsylvanian Hart and Gibson sandstones. Although all porous Hart and Gibson sandstones in the study area were originally oil bearing, evaluation of the state of depletion is necessary for planning future recompletions to these reservoirs. In general, wireline and mud logs over intervals with known production histories exhibit characteristics suggestive of pressure depletion, even in areas of old waterfloods. The most consistent parameters correlating to low reservoir pressure are lost circulation, lack of an increase in penetration rate when drilling porous sandstone, excessive gas effect on neutron-density logs, and low methane and total gas levels on the mud logs. The resistivity invasion profile also reflects lower pressure, but is subtle. The SP curve and gas composition on the mud log do not vary substantially as a function of pressure. Visual sample shows are slightly weaker in depleted sandstones, but are less reliable, owing to dependence on reservoir quality and variations between geologists on oral descriptions of show quality.

  7. Small Log Conference Creating Capacity to Compete Coeur d'Alene, Idaho, USA, 1 April 2005

    E-Print Network [OSTI]

    Assessment · UNECE Timber Committee market forecasts · UNECE/FAO Timber Bulletin "Forest products annual Forest Sector Outlook Study · FAO State of the World's Forests, 2005 #12;Small Log Conference ­ Creating countries · Low value · Modern wood energy ­ Small international trade ­ Growing market ­ Policy push

  8. Weekly Security Incident Log Period of Aug 12 -Aug 18, 2013

    E-Print Network [OSTI]

    2013-001248 THOMPSON ROAD Gas leak Security , Toronto Fire, Toronto Police, and Occupational Health and Safety responded to a report of a natural gas leak in the area of the Life Science BuildingWeekly Security Incident Log Period of Aug 12 - Aug 18, 2013 Incident No. Reported Date Building

  9. Weekly Security Incident Log Period of Feb 6 -Feb 12, 2012

    E-Print Network [OSTI]

    Gas leak Security and Toronto Fire responded to a report of a natural gas odour in B-wing. TorontoWeekly Security Incident Log Period of Feb 6 - Feb 12, 2012 Incident No. Reported Date Building\\Const. Security, York Fire Prevention and Toronto Fire responded to a fire alarm. The cause of the alarm

  10. Weekly Security Incident Log Period of Jul 9 -Jul 15, 2012

    E-Print Network [OSTI]

    and Safety responded to a report of a natural gas odour in the building. The building was checked and no natural gas was found. Toronto Fire determined that all was in order. 7/12/2012 07:31 AM HazardousWeekly Security Incident Log Period of Jul 9 - Jul 15, 2012 Incident No. Reported Date Building

  11. Weekly Security Incident Log Period of Apr 29 -May 5, 2013

    E-Print Network [OSTI]

    2013-000845 YORK LANES RETAIL Gas leak Security, Toronto Fire and Enbridge Gas responded to a report of a natural gas odour in the building. The source of the odour was located in a restaurant kitchen. EnbridgeWeekly Security Incident Log Period of Apr 29 - May 5, 2013 Incident No. Reported Date Building

  12. Many sawmills use sprinkler systems to maintain the moisture content of logs above the fiber satura-

    E-Print Network [OSTI]

    Balasundaram, Balabhaskar "Baski"

    secondary breakdown. A headrig is a machine center consisting of one or more cutting tools that influences Oklahoma Cooperative Extension Service · Division of Agricultural Sciences and Natural Resources FAPC-165, includ- ing what occurs in the log yard, primary breakdown, secondary breakdown, sorting and planing

  13. IMPLICATIONS ON ECOSYSTEM SERVICES The impact of selective logging on Forest structure, Plant Diversity

    E-Print Network [OSTI]

    Paparella, Francesco

    IMPLICATIONS ON ECOSYSTEM SERVICES The impact of selective logging on Forest structure, Plant on the ecosystem, even though the available scientific literature is scanty and somewhat contradictory and other infestants. A simple mathematical model may explain these data. 1 IMPLICATIONS ON ECOSYSTEM

  14. Learn from Web Search Logs to Organize Search Results Xuanhui Wang

    E-Print Network [OSTI]

    Zhai, ChengXiang

    and Subject Descriptors: H.3.3 [Informa- tion Search and Retrieval]: Clustering, Search process General TermsLearn from Web Search Logs to Organize Search Results Xuanhui Wang Department of Computer Science Effective organization of search results is critical for improv- ing the utility of any search engine

  15. Log-Gamma Polymer Free Energy Fluctuations via a Fredholm Determinant Identity

    E-Print Network [OSTI]

    Borodin, Alexei

    We prove that under n[superscript 1/3] scaling, the limiting distribution as n ? ? of the free energy of Seppalainen’s log-Gamma discrete directed polymer is GUE Tracy-Widom. The main technical innovation we provide is a ...

  16. Annual Logging Symposium, June 3-6, 2007 RAPID SIMULATION OF BOREHOLE NUCLEAR MEASUREMENTS

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    MEASUREMENTS WITH APPROXIMATE SPATIAL FLUX-SCATTERING FUNCTIONS A. Mendoza, and C. Torres and benchmark fast approximate numerical procedures to simulate neutron and density porosity logs making use of Monte Carlo-derived spatial flux- scattering functions (FSFs) for specific nuclear tool configurations

  17. Speech Enhancement of Noisy Speech Using Log-Spectral Amplitude Estimator and Harmonic Tunneling

    E-Print Network [OSTI]

    Wichmann, Felix

    Speech Enhancement of Noisy Speech Using Log-Spectral Amplitude Estimator and Harmonic Tunneling we present a two stage noise reduction algo- rithm for speech enhancement. The speech noise removal and decreases the performance of speech coding and speech recog- nition systems. In speech enhancement

  18. University of Connecticut Daily Temperature Log for Unit Based Medication Refrigerators

    E-Print Network [OSTI]

    Oliver, Douglas L.

    University of Connecticut Daily Temperature Log for Unit Based Medication Refrigerators Month: If the refrigerator temperature falls out of the acceptable range of 36 to 46 degrees Fahrenheit or 2.2 to 7.7 degrees. * If the refrigerator temperature falls out of range please document your actions in the follow-up column. #12;

  19. Weekly Security Incident Log Period of May 14 -May 20, 2012

    E-Print Network [OSTI]

    Weekly Security Incident Log Period of May 14 - May 20, 2012 Incident No. Reported Date Building-000955 PARKING GARAGE - ARBORETUM LANE (PS2) Mech\\Electrical Security responded to a report that an automotive York Security responded to a report of an unknown male causing a disturbance in the food court

  20. The Helium Logging Facility Jurriaan Hage (jur@cs.uu.nl)

    E-Print Network [OSTI]

    Utrecht, Universiteit

    The Helium Logging Facility Jurriaan Hage (jur@cs.uu.nl) institute of information and computing sciences, utrecht university technical report UU-CS-2005-055 www.cs.uu.nl #12;Abstract Helium is a compiler experiences in using socket communication for the purpose. 1 #12;1 Introduction The Helium compiler implements

  1. THE HISTORICAL DENDROARCHAEOLOGY OF TWO LOG STRUCTURES AT THE MARBLE SPRINGS HISTORIC SITE, KNOX

    E-Print Network [OSTI]

    Grissino-Mayer, Henri D.

    THE HISTORICAL DENDROARCHAEOLOGY OF TWO LOG STRUCTURES AT THE MARBLE SPRINGS HISTORIC SITE, KNOX as a significant heritage site for the state of Tennessee because it was the final home of one of our nation's most. Recent archaeological and historical research had called into question the authenticity of the original

  2. Log Design for Accountability Denis Butin, Marcos Chicote and Daniel Le Metayer

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , the logs we examine here record actions by data controllers handling personally identifiable information or identity theft can arise through criminal obtainment of PII. To address these threats, legislation on how safeguards for the private sector and the 1974 Privacy Act [7] does so for government agencies. In practice

  3. 2003 Horseshoe Beach Lease Area, Dixie County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  4. 2004 Gulf Jackson Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  5. 2002 Dog Island Lease Area, Levy County Quality Assurance/Quality Control (AQ/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (AQ/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  6. 2003 Body A Lease Area, Brevard County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  7. 2003 Pine Island Lease Area, Dixie County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  8. 2002 Body A Lease Area, Brevard County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  9. 2002 Pine Island Lease Area, Dixie County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  10. 2003 Dog Island Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  11. 2003 Gulf Jackson Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  12. 2002 Gulf Jackson Lease Area, Levy County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  13. How to produce a turbo equalization system with complexity O(logL)?

    E-Print Network [OSTI]

    Huang, Jianwei

    How to produce a turbo equalization system with complexity O(logL)? by Professor Defeng Huang University of Hong Kong Abstract Following the great success of turbo codes in 1993, turbo equalization-symbol interference channels. However, for more than 15 years, the prohibitive complexity of turbo equalization has

  14. High Speed Max-Log-MAP Turbo SISO Decoder Implementation Using Branch Metric Normalization

    E-Print Network [OSTI]

    Arslan, Tughrul

    High Speed Max-Log-MAP Turbo SISO Decoder Implementation Using Branch Metric Normalization J. H.Erdogan@ee.ed.ac.uk, Tughrul.Arslan@ee.ed.ac.uk Abstract The authors present a turbo soft-in soft-out (SISO) decoder based. The turbo decoder with the proposed technique has been synthesized to evaluate its power consumption

  15. Transactional In-Page Logging for Multiversion Read Consistency and Recovery

    E-Print Network [OSTI]

    Moon, Bongki

    . INTRODUCTION Since solid state drives (SSDs) based on NAND type flash memory were introduced to the storage@cs.arizona.edu Abstract--Recently, a new buffer and storage management strategy called In-Page Logging (IPL) has been, the IPL scheme provides unique opportunities to design light-weight transactional support for database

  16. Android Diabetes Log Book E-mail: kongkamol@kku.ac.th

    E-Print Network [OSTI]

    Runapongsa, Kanda

    Android Diabetes Log Book 1 2 3 1 . . 40002 2, 3 . . 40002 E-mail: kongkamol@kku.ac.th Abstract Diabetes is a chronic disease, of which the patients have to continually monitor their health conditions. Keywords: android application, diabetes 4.07 5.00 , 1. 285 . . 2573 435 . . 2552 558,156 7,019 [1] 15 7% [2

  17. Petrophysical inversion of borehole array-induction logs: Part I --Numerical examples

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    to mud-filtrate invasion. We use a rigorous formulation to account for the physics of fluid displacement in porous media resulting from water-base mud filtrate invading hydrocarbon- bearing rock formations inversion experiments using noisy synthetic wireline logs. The inversion requires a priori knowledge

  18. Quantitative interpretation of pulsed neutron capture logs: Part 2 --Inversion of measurements in thinly bedded

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    across beds thinner than 45 cm. Our fast, iterative algorithm inverts R logs in seconds of CPU time and numerical solutions. However, no interpreta- tion schemes have been advanced to account for diffusion functions (FSFs) -- together with a 1D (vertical) neutron-diffusion correction. The speed and accu- racy

  19. Lawson Job Description Look Up Instructions for Managers Log In to Lawson

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    Lawson Job Description Look Up Instructions for Managers · Log In to Lawson o Lawson Web Address Lawson e-mail your password to you. Updated 3/15/10 Page 1 of 5 #12;Lawson Job Description Look Up Instructions for Managers · Click "Job Descriptions" from Manager Central Section, sub-section Requirements

  20. Logging and the Law How the U.S. Lacey Act Helps Reduce

    E-Print Network [OSTI]

    to cut global warming pollution by reducing tropical deforestation. More information about UCS a r y 3 C h a p t e r o n e introduction 4 Illegal Logging and Associated Trade 4 Causes of Illegal t e r f o U r global Benefits of the lacey act 14 Economic Benefits 15 Societal Benefits 16

  1. An Integrated Framework on Mining Logs Files for Computing System Management

    E-Print Network [OSTI]

    Li, Tao

    . The data in the log files describe the status of each component and record system operational changes data have been less emphasized in existing analysis methods from data mining and machine learning and relatively short text messages in data reporting, asynchronism in data collection, and temporal character

  2. Mining Logs Files for Computing System Management Wei Peng, Tao Li

    E-Print Network [OSTI]

    Li, Tao

    reporting, asynchronous data collection, and temporal characteristics in data representation. FirstMining Logs Files for Computing System Management Wei Peng, Tao Li School of Computer Science experts through a knowledge acquisition process to translate domain knowl- edge into operating rules

  3. Annual Logging Symposium, June 3-6, 2007 COMBINED SIMULATION AND INVERSION OF SP AND RESISTIVITY

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    2007, held jointly by the Society of Petrophysicists and Well Log Analysts (SPWLA) and the submitting method to two data sets acquired in clastic formations. One data set corresponds to a high allows us to apply the physics of mud-filtrate invasion to estimate permeability. By progressively

  4. Petrophysical inversion of borehole array-induction logs: Part II --Field data examples

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    Petrophysical inversion of borehole array-induction logs: Part II -- Field data examples Carlos with over 30,000 wells Sorenson, 2005 . Reservoir flow units consist of rela- tively thin 2­10 m marine carbonates along with fine-grained clastics and shales. The penetrated thickness of the formation in the two

  5. Study of Marine Gas Hydrate on the Northern Cascadia Margin: Constraints from Logging and

    E-Print Network [OSTI]

    Study of Marine Gas Hydrate on the Northern Cascadia Margin: Constraints from Logging and Seismic and gas explaining the high hydrate concentrations at shallow depths of less than 100 meters below of the degree of Master of Science © Xuan Wang 2009 #12; i ABSTRACT This thesis presents estimates of gas

  6. A one-dimensional sectional model to simulate multicomponent aerosol dynamics in the marine boundary layer 1. Model description

    SciTech Connect (OSTI)

    Fitzgerald, J.W.; Hoppel, W.A. [Remote Sensing Division, Naval Research Laboratory, Washington, District of Columbia (United States)] [Remote Sensing Division, Naval Research Laboratory, Washington, District of Columbia (United States); Gelbard, F. [Modeling and Analysis Department, Sandia National Laboratories, Albuquerque, New Mexico (United States)] [Modeling and Analysis Department, Sandia National Laboratories, Albuquerque, New Mexico (United States)

    1998-07-01T23:59:59.000Z

    A one-dimensional, multicomponent sectional model has been developed to simulate the temporal and vertical variations of the aerosol size distribution and composition in the marine boundary layer (MBL). An important aspect of the model is its ability to handle the transport of aerosols in an atmosphere with humidity gradients with no numerical diffusion caused by the swelling and shrinking of the particles as they move through the humidity gradients. This is achieved by rewriting the aerosol general dynamical equation (GDE) in terms of dry radius thus transferring all variations in radius caused by temporal and spatial humidity variations to the rate coefficients appearing in the equations. The model then solves the new GDE in fixed dry size sections, with the humidity dependence of the processes now included in variable coefficients. This procedure also results in correct gradient transport. A limiting assumption is that the particles equilibrate instantaneously with the ambient water vapor. This assumption limits the maximum particle size which can be treated in the model to ambient (wet) radii less than about 30 {mu}m. All processes currently believed to be important in shaping the MBL size distribution are included in the current version of the model. These include generation of sea-salt aerosol at the ocean surface, nucleation of new particles, coagulation, growth due to condensation of gas-phase reaction products, growth due to sulfate formation during cloud processing, precipitation scavenging, surface deposition, turbulent mixing, gravitational settling, and exchange with the free troposphere. Simple gas-phase chemistry which includes the oxidation of dimethylsulfide and SO{sub 2} to sulfate is incorporated in the current version of the model. {copyright} 1998 American Geophysical Union

  7. Supply Assessment of Forest Logging Residues and Non-Sawlog Biomass in the Vicinity of Missoula, Montana, 2011-2013

    E-Print Network [OSTI]

    Vonessen, Nikolaus

    1 Supply Assessment of Forest Logging Residues and Non-Sawlog Biomass in the Vicinity of Missoula logging slash and non-sawlog biomass are commonly disposed of in the forest through piling and open biomass sources such as forest inventories, planned projects on other landownerships, and mill residues

  8. Outline Directed polymers Log-gamma polymer KPZ equation Fluctuation exponents for certain 1+1 dimensional

    E-Print Network [OSTI]

    Seppäläinen, Timo

    Outline Directed polymers Log-gamma polymer KPZ equation Fluctuation exponents for certain 1+1 dimensional directed polymers Timo Sepp¨al¨ainen Department of Mathematics University of Wisconsin-Madison MSRI December 2010 Fluctuation exponents for polymers 1/36 #12;Outline Directed polymers Log

  9. Detecting Large-Scale System Problems by Mining Console Logs Wei Xu xuw@cs.berkeley.edu

    E-Print Network [OSTI]

    Jordan, Michael I.

    . Researchers and operators have been using all kinds of mon- itoring data, from the simplest numerical metrics Problems by Mining Console Logs part operator, and charged with fixing the problem-- are usuallyDetecting Large-Scale System Problems by Mining Console Logs Wei Xu xuw@cs.berkeley.edu EECS

  10. Log In

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > The EnergyCenter (LMI-EFRC) - CenterLinks BerkeleyLiving well, Search

  11. Log Summarization

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatestCenter (LMI-EFRC)DepartmentSecurityLodging

  12. Outage Log

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTest andOptimize carbonOther FileDustyOur HistoryOurOutage

  13. Hislop Log

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

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

  14. Quantification of Wellbore Leakage Risk Using Non?destructive Borehole Logging Techniques

    SciTech Connect (OSTI)

    Duguid, Andrew; Butsch, Robert; Cary, J.; Celia, Michael; Chugunov, Nikita; Gasda, Sarah; Hovorka, Susan; Ramakrishnan, T. S.; Stamp, Vicki; Thingelstad, Rebecca; Wang, James

    2014-05-31T23:59:59.000Z

    Well integrity is important at all potential CCS locations and may play a crucial role establishing leakage risk in areas where there is a high density of existing wells that could be impacted by the storage operations including depleted petroleum fields where EOR or CCS will occur. To address a need for risk quantification methods that can be directly applied to individual wells using borehole logging tools a study was conducted using data from five wells in Wyoming. The objectives of the study were: Objective 1 Develop methods to establish the baseline flow parameters (porosity and permeability or mobility) from individual measurements of the material properties and defects in a well. Objective 2 Develop a correlation between field flow?property data and cement logs that can be used to establish the flow?properties of well materials and well features using cement mapping tools. Objective 3 Establish a method that uses the flow?property model (Objective 2) to analyze the statistical uncertainties associated with individual well leakage that can provide basis for uncertainty in risk calculations. The project objectives were met through the logging of five wells in Carbon and Natrona County Wyoming to collect data that was used to estimate individual and average well flow properties and model the results using ultrasonic data collected during the logging. Three of the five wells provided data on point and average flow properties for well annuli. Data from the other two wells were used to create models of cement permeability and test whether information collected in one well could be used to characterize another well. The results of the in?situ point measurements were confirmed by the lab measurements sidewall cores collected near the same depths Objective 1 was met using the data collected through logging, testing, and sampling. The methods were developed that can establish baseline flow parameters of wells by both point and average test methods. The methods to estimate the flow properties modeling of point pressure tests, modeling of vertical interference tests, and laboratory measurement of cased?hole sidewall cores The wells were in sufficiently good shape to allow the development of the characterization methods while still having enough defects to study differences in results as they relate to well integrity. Samples and tests analyzed from three of five wells studied in showed the cements were largely intact and had not degraded from exposure native brines. Log results taken in conjunction with the core measurements indicate that interfaces and/or problems with cement placement due to eccentering provide preferential flow paths for fluids, which can increase the effective permeability of the barrier several orders of magnitude above the permeability of intact cement. The results of the maps created using logging tools indicating that the cement condition and bond are generally good identify a need for more research to understand how logs can be used to predict effective well permeabilities such as those measured by the VITs in this study.

  15. Solid Waste Information and Tracking System (SWITS) data change request log

    SciTech Connect (OSTI)

    McKay, R.B.

    1994-08-18T23:59:59.000Z

    The Data Change Request (DCR) log is designed to promote data integrity within the Solid Waste Information and Tracking System (SWITS). It achieves this function by providing a record of all data changes performed on the database. This document contains records of those data changes from March 91 through June 94. The DCR log is also a supplement to an electronic database -- the DCR Tracking System, which provides an electronic record of all data changes preformed on the SWITS database. The records found in this document are Data Change Request forms. These forms are required for SWITS users who wish to request data changes in the database. The procedure formalizing this policy did not go into effect until September 1, 1994; therefore, some records created before that date may be incomplete.

  16. A Uniqueness Result for Minimizers of the 1D Log-gas Renormalized Energy

    E-Print Network [OSTI]

    Thomas Leblé

    2014-08-10T23:59:59.000Z

    Sandier and Serfaty studied the one-dimensional Log-gas model, in particular they gave a crystallization result by showing that the one-dimensional lattice $\\mathbb{z}$ is a minimizer for the so-called renormalized energy which they obtained as a limit of the $N$-particle Log-gas Hamiltonian for $N \\to \\infty$. However, this minimizer is not unique among infinite point configurations (for example small perturbations of $\\mathbb{z}$ leave the renormalized energy unchanged). In this paper, we establish that uniqueness holds at the level of (stationary) point processes, the only minimizer being given by averaging $\\mathbb{z}$ over a choice of the origin in $[0,1]$. This is proved by showing a quantitative estimate on the two-point correlation function of a process in terms of its renormalized energy.

  17. A UNIX security log analyzer based on from/to access matrix 

    E-Print Network [OSTI]

    El-Haj Mahmoud, Samer Ahmad

    2002-01-01T23:59:59.000Z

    -Chairs of Advisory Committee: Dr. U . Pooch Dr. A . L . N . Reddy System log files are valuable assets in detecting security violations and malicious attacks as well as in holding users responsible for their actions. However, the huge size of these logs makes... Page A B S T R A C T i i i DEDICATION iv A C K N O W L E D G M E N T S v T A B L E OF CONTENTS vi LIST OF FIGURES viii LIST OF T A B L E S ix CHAPTER I INTRODUCTION 1 1.1 The Rise of Computer Crime 1 1.2 Importance of Computer Security 2 1...

  18. Log-Gamma polymer free energy fluctuations via a Fredholm determinant identity

    E-Print Network [OSTI]

    Alexei Borodin; Ivan Corwin; Daniel Remenik

    2012-06-20T23:59:59.000Z

    We prove that under n^{1/3} scaling, the limiting distribution as n goes to infinity of the free energy of Seppalainen's log-Gamma discrete directed polymer is GUE Tracy-Widom. The main technical innovation we provide is a general identity between a class of n-fold contour integrals and a class of Fredholm determinants. Applying this identity to the integral formula proved in [Corwin-O'Connell-Seppalainen-Zygouras] for the Laplace transform of the log-Gamma polymer partition function, we arrive at a Fredholm determinant which lends itself to asymptotic analysis (and thus yields the free energy limit theorem). The Fredholm determinant was anticipated in [Borodin-Corwin] via the formalism of Macdonald processes yet its rigorous proof was so far lacking because of the nontriviality of certain decay estimates required by that approach.

  19. Spitzer Survey of Stellar Structure in Galaxies (S$^4$G). The Pipeline 4: Multi-component decomposition strategies and data release

    E-Print Network [OSTI]

    Salo, Heikki; Laine, Jarkko; Comerón, Sebastien; Gadotti, Dimitri A; Buta, Ron; Sheth, Kartik; Zaritsky, Dennis; Ho, Luis; Knapen, Johan; Athannassoula, E; Bosma, Albert; Laine, Seppo; Cisternas, Mauricio; Kim, Taehyun; Regan, Juan Carlos Muñoz-Mateos Michael; Hinz, Joannah L; de Paz, Armando Gil; Menendez-Delmestre, Karin; Mizusawa, Trisha; Erroz-Ferrer, Santiago; Meidt, Sharon E; Querejeta, Miguel

    2015-01-01T23:59:59.000Z

    The Spitzer Survey of Stellar Structure in Galaxies (S$^4$G, Sheth et. al. 2010) is a deep 3.6 and 4.5 $\\mu$m imaging survey of 2352 nearby ($pipeline 4, which is dedicated to 2-dimensional structural surface brightness decompositions of 3.6 $\\mu$m images, using GALFIT3.0 \\citep{peng2010}. Besides automatic 1-component S\\'ersic fits, and 2-component S\\'ersic bulge + exponential disk fits, we present human supervised multi-component decompositions, which include, when judged appropriate, a central point source, bulge, disk, and bar components. Comparison of the fitted parameters indicates that multi-component models are needed to obtain reliable estimates for the bulge S\\'ersic index and bulge-to-total light ratio ($B/T$), confirming earlier results \\citep{laurikainen2007, gadotti2008, weinzirl2009}. In this first paper, we describe the preparations of input data done for decompositions, give examples of our decomposition strategy, and describe the d...

  20. Field geologist's training guide: An introduction to oilfield geology, mud logging and formation evaluation

    SciTech Connect (OSTI)

    Whittaker, A.

    1985-01-01T23:59:59.000Z

    This handbook presents a basic overview of and introduction to petroleum geology, oilfield terminolgy and formation evaluation procedures. The chapters introduce many key concepts. Petroleum geology, oilfield fluids, rig types and their components, wellsite equipment and the environment in which field geologists work are presented in detail. Drilling and completing a well and formation evaluation procedures are examined from the logging geologist's perspective. The appendices contain a wide range of information such as general abbreviations, glossary, and bit classification.

  1. Evaluation of Non-Nuclear Techniques for Well Logging: Final Report

    SciTech Connect (OSTI)

    Bond, Leonard J.; Griffin, Jeffrey W.; Harris, R. V.; Denslow, Kayte M.; Moran, Traci L.

    2011-08-01T23:59:59.000Z

    The focus of this study is the understanding of the technical obstacles that hinder the replacement of and the disadvantages from the loss of extensive interpretation experience based on data accumulated with AmBe. Enhanced acoustic and electromagnetic sensing methods in combination with non-isotope-based well logging techniques have the potential to complement and/or replace existing isotope-based techniques, providing the opportunity to reduce oil industry dependence on isotopic sources such as AmBe.

  2. Analysis of historical gross gamma logging data from TY tank farm

    SciTech Connect (OSTI)

    MYERS, D.A.

    1999-10-19T23:59:59.000Z

    Gross gamma ray logs, recorded from January 1975 through mid-year 1994 as part of the Single-Shell Tank Farm Dry Well Surveillance Program, have been reanalyzed for the TY tank farm to locate the presence of mobile radionuclides in the subsurface. This report presents the TY tank farm gross gamma ray data in such a way as to assist others in their study of vadose zone mechanism.

  3. The effects of composition and bedding on log response, Yowlumne sandstone, Kern County, California

    E-Print Network [OSTI]

    Fortner, David William

    1988-01-01T23:59:59.000Z

    southwest of Bakersfield (Figures 3 and 4). Stratigraphy The Yowlumne sandstone is Upper Miocene (Mohnian) in age and is found as an isolated, lenticular body of sand within the Antelope Shale member of the Monterey Formation (Table 1) . Upper Miocene...THE EFFECTS OF COMPOSITION AND BEDDING ON LOG RESPONSE, YOWLUMNE SANDSTONE, KERN COUNTY, CALIFORNIA A Thesis by DAVID WILLIAM FORTNER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  4. Estimators and characteristics of logging residue in California. Forest Service research paper

    SciTech Connect (OSTI)

    Howard, J.O.; Bulgrin, J.K.

    1986-03-01T23:59:59.000Z

    Ratios are presented for estimating volume and characteristics of logging residue. The ratios relate cubic-foot volume of residue to thousand board feet of timber harvested and to acres harvested. Tables show gross and net volume of residue with and without bark, by diameter and length classes, by number of pieces per acre, by softwoods and hardwoods, by percent soundness, and by degree of slope and distance to roads.

  5. Airborne LiDAR Detects Selectively Logged Tropical Forest Even in an Advanced Stage of Recovery

    E-Print Network [OSTI]

    Kent, Rafi; Lindsell, Jeremy A.; Laurin, Gaia Vaglio; Valentini, Riccardo; Coomes, David A.

    2015-01-01T23:59:59.000Z

    logged tropical forests: the attained and the attainable. Conserv. Lett. 2012, 5, 296–303. 10. Silver, W. L.; Ostertag, R.; Lugo, a. E. The Potential for Carbon Sequestration Through Reforestation of Abandoned Tropical Agricultural and Pasture Lands... forests can be of high conservation value [2,7–9] and act as globally-important carbon sinks [9–12]. However, there is much uncertainty regarding the changing extent of regenerating forests, their rate and stage of recovery, and the influence...

  6. Constraint Based Mining of First Order Sequences in SeqLog (Extended Abstract)

    E-Print Network [OSTI]

    Dzeroski, Saso

    ,deraedt}@informatik.uni­freiburg.de Abstract. A logical language, SeqLog, for mining and querying sequen­ tial data and databases is presented of user­ modeling that validate of the approach. 1 Introduction Data mining has been a hot research topic in recent years, and the mining of knowledge from data of various models has been studied. One popular data

  7. Modeling of capillary pressure behavior using standard open hole wireline log data: Demonstrated on carbonates from the Middle East

    SciTech Connect (OSTI)

    Ross, C.M. [Rice Univ., Houston, TX (United States); Callender, C.A.; Turbeville, J.B. [and others

    1995-12-31T23:59:59.000Z

    A new technique was developed to model capillary pressure behavior from wireline log data and applied to carbonate reservoir rock from a Saudi Aramco field. The method utilizes image analysis of petrographic thin sections, capillary pressure measurements, and neural network analysis of standard open hole wireline log data. Twenty capillary pressure curves and their associated pore type proportions (identified in thin section) are the basis for the capillary pressure predictive model for the reservoir interval under study. Neural network analysis of the wireline log data was used to continuously predict pore type proportions downhole. The neural network-derived pore proportions were than applied in constructing wireline log-based capillary pressure curves using the capillary pressure predictive model. This method provides an accurate means of determining capillary pressure behavior from wireline log data and extends the applicability of the limited number of available capillary pressure curves. Once trained, the neural network may be applied to other wells in the field as long as the training set (both rock samples and wireline log types) is representative within the study area. The capillary pressure curves predicted from wireline log data can be used for the same purposes as capillary pressure curves measured on core samples, such as determining water saturation in intervals above and within the transition zone.

  8. A simulation model for determining the productivity and costs associated with a mobile small-log sawmill

    E-Print Network [OSTI]

    Rogers, Kenneth E

    1975-01-01T23:59:59.000Z

    accepts small logs and reduces them to a rectangular cant by m ans of a series of cutterheads. The cant is immediately reduced to one-inch or two ? inch lumber with a gangsaw. If the log is of sufficient size to produce a crosstie, the option exists... D ) ? !O. DQ MIB. SHOR1EST 2:M TO MOVE(TLVLQN) - 8. 00 MZU. LOG CHARACTERIS IC INPUT DIAMETER MEAN(DIMELN) ? 7. 00 I!ICHES DIAMETER STD. DEV. (D STDE) - 1. 00 INCHES SMALLEST POSSIBLE DIA. LTER(DILOV) - 6. 00 INCHES LARGEST POSSZBL DIMKTER( I...

  9. New Improved Equations For Na-K, Na-Li And Sio2 Geothermometers...

    Open Energy Info (EERE)

    errors (2-3%) than for the original equation (5-29%). Authors Surendra P. Verma and Edgar Santoyo Published Journal Journal of Volcanology and Geothermal Research, 1997 DOI Not...

  10. A New Improved Na-K Geothermometer By Artificial Neural Networks | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergy InformationOf The 28-29Making

  11. New Improved Equations For Na-K, Na-Li And Sio2 Geothermometers By Outlier

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns Jump to:Neppel WindNew Grid EnergyHarvest Jump

  12. An Empirical Na-K-Ca Geothermometer For Natural Waters | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place:Alvan BlanchAmite

  13. Application Of An Artificial Neural Network Model To A Na-K Geothermometer

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcatAntrim County, Michigan:Applewood, Colorado:Of Travale, Tuscany|

  14. State-Of-The-Art in Permeability Determination From Well Log Data: Part 2-Verifiable, Accurate Permeability Predictions, the Touch-Stone of All Models

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE 30979 State-Of-The-Art in Permeability Determination From Well Log Data: Part 2- Verifiable prediction from well log data, is accurate and verifiable prediction of permeability for wells from which only the well log data is available. So far all the available models and techniques have been tried

  15. Method of assaying uranium with prompt fission and thermal neutron borehole logging adjusted by borehole physical characteristics. [Patient application

    DOE Patents [OSTI]

    Barnard, R.W.; Jensen, D.H.

    1980-11-05T23:59:59.000Z

    Uranium formations are assayed by prompt fission neutron logging techniques. The uranium in the formation is proportional to the ratio of epithermal counts to thermal or epithermal dieaway. Various calibration factors enhance the accuracy of the measurement.

  16. Dendrochronology of the Wixson Road Log Cabin and Benjamin Patterson Inn, Corning-Painted Post Historical Society, Corning, NY

    E-Print Network [OSTI]

    Manning, Sturt

    in 1838, 1855, and again in 1863. In the NYS Census for 1865, the house was described as "log Patterson Inn with its well- documented 1796 building date and the patterns of a modern oak chronology

  17. Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, August 1993 to February 1994

    SciTech Connect (OSTI)

    Geslin, J.K.; Moyer, T.C.; Buesch, D.C.

    1995-05-01T23:59:59.000Z

    Yucca Mountain, Nevada, is being investigated as a potential site for a high-level radioactive waste repository. This report summarizes the lithologic logging of new and existing boreholes at Yucca Mountain that was done from August 1993 to February 1994 by the Rock Characteristics Section, Yucca Mountain Project Branch, US Geological Survey (USGS). Units encountered during logging include Quaternary-Tertiary alluvium/colluvium, Tertiary Rainier Mesa Tuff, all units in the Tertiary Paintbrush Group, Tertiary Calico Hills Formation and Tertiary Prow Pass Tuff. We present criteria used for recognition of stratigraphic contacts, logging results as tables of contact depths for core from neutron (UZN) boreholes and graphical lithologic logs for core from non-UZN boreholes, and descriptions of several distinctive nonwelded tuffs recognized in the PTn hydrogeologic unit of the Paintbrush Group.

  18. Detection of Late Cretaceous and Cenozoic sequence boundaries on the Atlantic coastal plain using core log integration

    E-Print Network [OSTI]

    at the Navesink/Mount Laurel formation contact and can be attributed to high uranium concentration in phosphorite lithological contrasts to be expressed in the NGR and/or MS logs. INDEX TERMS: 0915 Exploration Geophysics

  19. Modeling Mud-Filtrate Invasion Effects on Resistivity Logs to Estimate Permeability of Vuggy and Fractured Carbonate Formations

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    measurements with conventional and non- conventional well logs to calculate static and dynamic petrophysical/or fractures in the displacement of hydrocarbons by mud filtrate. Introduction Permeability estimation is one

  20. Application of Multi-rate Flowing Fluid Electric ConductivityLogging Method to Well DH-2, Tono Site, Japan

    SciTech Connect (OSTI)

    Doughty, Christine; Takeuchi, Shinji; Amano, Kenji; Shimo, Michito; Tsang, Chin-Fu

    2004-10-04T23:59:59.000Z

    The flowing fluid electric conductivity (FEC) logging method, wellbore fluid is replaced with de-ionized water, following which FEC profiles in the wellbore are measured at a series of times while the well is pumped at a constant rate. Locations were fluid enters the wellbore show peaks in the FEC logs, which may be analyzed to infer inflow strengths and salinities of permeable features intersected by the wellbore. In multi-rate flowing FEC logging, the flowing FEC logging method is repeated using two or more pumping rates, which enables the transmissivities and inherent pressure heads of these features to be estimated as well. We perform multi-rate FEC logging on a deep borehole in fractured granitic rock, using three different pumping rates. Results identify 19 hydraulically conducting fractures and indicate that transmissivity, pressure head, and salinity vary significantly among them. By using three pumping rates rather than the minimum number of two, we obtain an internal consistency check on the analysis that provides a measure of the uncertainty of the results. Good comparisons against static FEC profiles and against independent chemical, geological, and hydrogeological data have further enhanced confidence in the results of the multi-rate flowing FEC logging method.

  1. Notes on Well-Posed, Ensemble Averaged Conservation Equations for Multiphase, Multi-Component, and Multi-Material Flows

    SciTech Connect (OSTI)

    Ray A. Berry

    2005-07-01T23:59:59.000Z

    At the INL researchers and engineers routinely encounter multiphase, multi-component, and/or multi-material flows. Some examples include: Reactor coolant flows Molten corium flows Dynamic compaction of metal powders Spray forming and thermal plasma spraying Plasma quench reactor Subsurface flows, particularly in the vadose zone Internal flows within fuel cells Black liquor atomization and combustion Wheat-chaff classification in combine harvesters Generation IV pebble bed, high temperature gas reactor The complexity of these flows dictates that they be examined in an averaged sense. Typically one would begin with known (or at least postulated) microscopic flow relations that hold on the “small” scale. These include continuum level conservation of mass, balance of species mass and momentum, conservation of energy, and a statement of the second law of thermodynamics often in the form of an entropy inequality (such as the Clausius-Duhem inequality). The averaged or macroscopic conservation equations and entropy inequalities are then obtained from the microscopic equations through suitable averaging procedures. At this stage a stronger form of the second law may also be postulated for the mixture of phases or materials. To render the evolutionary material flow balance system unique, constitutive equations and phase or material interaction relations are introduced from experimental observation, or by postulation, through strict enforcement of the constraints or restrictions resulting from the averaged entropy inequalities. These averaged equations form the governing equation system for the dynamic evolution of these mixture flows. Most commonly, the averaging technique utilized is either volume or time averaging or a combination of the two. The flow restrictions required for volume and time averaging to be valid can be severe, and violations of these restrictions are often found. A more general, less restrictive (and far less commonly used) type of averaging known as ensemble averaging can also be used to produce the governing equation systems. In fact volume and time averaging can be viewed as special cases of ensemble averaging. Ensemble averaging is beginning to gain some notice, for example the general-purpose multi-material flow simulation code CFDLib under continuing developed at the Los Alamos National Laboratory [Kashiwa and Rauenzahn 1994] is based on an ensemble averaged formulation. The purpose of this short note is to give an introduction to the ensemble averaging methodology and to show how ensemble averaged balance equations and entropy inequality can be obtained from the microscopic balances. It then details some seven-equation, two-pressure, two-velocity hyperbolic, well-posed models for two-phase flows. Lastly, a simple example is presented of a model in which the flow consists of two barotropic fluids with no phase change in which an equilibrium pressure equation is obtained in the spirit of pressure-based methods of computational fluid dynamics.

  2. Variation in physical rock properties determined from sonic logs at a South Texas lignite mine

    E-Print Network [OSTI]

    Cato, Kerry Don

    1985-01-01T23:59:59.000Z

    or underburden units which were identified as potential problem units. S1gn1ficance of Study In the planning and design of a Gulf Coast lignite mi ne, a need exists to deter nine the variability of phys1cal rock properties within strati graphic units...VARIATION IN PHVSICAL ROCK PROPERTIES DETERMINED FROM SONIC LOGS AT A SOUTH TEXAS LIGNITE MINE A Thesis by KERRV OON CATO Submitted to the Graduate College of Texas A&M University in Partial fulfillment of the requirements for the degree...

  3. Catalog of borehole lithologic logs from the 600 Area, Hanford Site

    SciTech Connect (OSTI)

    Fecht, K R; Lillie, J T

    1982-03-01T23:59:59.000Z

    Rockwell Hanford Operations (Rockwell) geoscientists are studying the Hanford Site subsurface environment to assure safe management operations, disposal, and storage of radioactive waste. As part of this effort, geoscientists have collected geotechnical data from about 3000 boreholes drilled on the Hanford Site since the early 1900s. These boreholes have been used for subsurface geologic, hydrologic, and engineering investigation, water supply, ground-water monitoring, and natural gas production. This report is a catalog of all obtainable (about 800) lithologic logs from boreholes in a portion of the Hanford Site known as the 600 Area.

  4. Gamma Log At Alum Area (Moos & Ronne, 2010) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489InformationFrenchtown, NewG22 Jump to: navigation,Log At Alum

  5. Gamma Log At Silver Peak Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489InformationFrenchtown, NewG22 Jump to: navigation,Log At

  6. Resistivity Log At Fish Lake Valley Area (DOE GTP) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At Fish Lake

  7. Resistivity Log At The Needles Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log At Fish689880

  8. Resistivity Log At Valles Caldera - Sulphur Springs Geothermal Area (Wilt &

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd Jump to: navigation,Maze - Making the PathInformation Log AtHaar, 1986)

  9. Electric Micro Imager Log At Coso Geothermal Area (2003) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| Open JumpEcologyElInformation Imager Log At Coso

  10. A New Direction in Dark-Matter Complementarity: Dark-Matter Decay as a Complementary Probe of Multi-Component Dark Sectors

    E-Print Network [OSTI]

    Keith R. Dienes; Jason Kumar; Brooks Thomas; David Yaylali

    2015-02-13T23:59:59.000Z

    In single-component theories of dark matter, the $2\\to 2$ amplitudes for dark-matter production, annihilation, and scattering can be related to each other through various crossing symmetries. These crossing relations lie at the heart of the celebrated complementarity which underpins different existing dark-matter search techniques and strategies. In multi-component theories of dark matter, by contrast, there can be many different dark-matter components with differing masses. This then opens up a new, "diagonal" direction for dark-matter complementarity: the possibility of dark-matter decay from heavier to lighter dark-matter components. In this work, we discuss how this new direction may be correlated with the others, and demonstrate that the enhanced complementarity which emerges can be an important ingredient in probing and constraining the parameter spaces of such models.

  11. Development of multicomponent hybrid density functional theory with polarizable continuum model for the analysis of nuclear quantum effect and solvent effect on NMR chemical shift

    SciTech Connect (OSTI)

    Kanematsu, Yusuke; Tachikawa, Masanori [Quantum Chemistry Division, Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027 (Japan)] [Quantum Chemistry Division, Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027 (Japan)

    2014-04-28T23:59:59.000Z

    We have developed the multicomponent hybrid density functional theory [MC-(HF+DFT)] method with polarizable continuum model (PCM) for the analysis of molecular properties including both nuclear quantum effect and solvent effect. The chemical shifts and H/D isotope shifts of the picolinic acid N-oxide (PANO) molecule in chloroform and acetonitrile solvents are applied by B3LYP electron exchange-correlation functional for our MC-(HF+DFT) method with PCM (MC-B3LYP/PCM). Our MC-B3LYP/PCM results for PANO are in reasonable agreement with the corresponding experimental chemical shifts and isotope shifts. We further investigated the applicability of our method for acetylacetone in several solvents.

  12. Scalable Replay with Partial-Order Dependencies for Message-Logging Fault Tolerance

    SciTech Connect (OSTI)

    Lifflander, Jonathan; Meneses, Esteban; Menon, Harshita; Miller, Phil; Krishnamoorthy, Sriram; Kale, Laxmikant

    2014-09-22T23:59:59.000Z

    Deterministic replay of a parallel application is commonly used for discovering bugs or to recover from a hard fault with message-logging fault tolerance. For message passing programs, a major source of overhead during forward execution is recording the order in which messages are sent and received. During replay, this ordering must be used to deterministically reproduce the execution. Previous work in replay algorithms often makes minimal assumptions about the programming model and application in order to maintain generality. However, in many cases, only a partial order must be recorded due to determinism intrinsic in the code, ordering constraints imposed by the execution model, and events that are commutative (their relative execution order during replay does not need to be reproduced exactly). In this paper, we present a novel algebraic framework for reasoning about the minimum dependencies required to represent the partial order for different concurrent orderings and interleavings. By exploiting this theory, we improve on an existing scalable message-logging fault tolerance scheme. The improved scheme scales to 131,072 cores on an IBM BlueGene/P with up to 2x lower overhead than one that records a total order.

  13. Evaluation of Non-Nuclear Techniques for Well Logging: Technology Evaluation

    SciTech Connect (OSTI)

    Bond, Leonard J.; Denslow, Kayte M.; Griffin, Jeffrey W.; Dale, Gregory E.; Harris, Robert V.; Moran, Traci L.; Sheen, David M.; Schenkel, Thomas

    2010-11-01T23:59:59.000Z

    This report presents an initial review of the state-of-the-art nuclear and non-nuclear well logging methods and seeks to understand the technical and economic issues if AmBe, and potentially other isotope sources, are reduced or even eliminated in the oil-field services industry. Prior to considering alternative logging technologies, there is a definite need to open up discussions with industry regarding the feasibility and acceptability of source replacement. Industry views appear to range from those who see AmBe as vital and irreplaceable to those who believe that, with research and investment, it may be possible to transition to electronic neutron sources and employ combinations of non-nuclear technologies to acquire the desired petro-physical parameters. In one sense, the simple answer to the question as to whether petro-physical parameters can be sensed with technologies other than AmBe is probably "Yes". The challenges come when attention turns to record interpretation. The many decades of existing records form a very valuable proprietary resource, and the interpretation of subtle features contained in these records are of significant value to the oil-gas exploration community to correctly characterize a well. The demonstration of equivalence and correspondence/correlation between established and any new sensing modality, and correlations with historic records is critical to ensuring accurate data interpretation. Establishing the technical basis for such a demonstration represents a significant effort.

  14. Going off grid: Computationally efficient inference for log-Gaussian Cox processes

    E-Print Network [OSTI]

    Simpson, Daniel; Lindgren, Finn; Sørbye, Sigrunn; Rue, Håvard

    2011-01-01T23:59:59.000Z

    In this paper we introduce a new method for performing computational inference on log-Gaussian Cox processes (LGCP). Contrary to current practice, we do not approximate by a counting process on a partition of the domain, but rather attack the point process likelihood directly. In order to do this, we use the continuously specified Markovian random fields introduced by \\citet{Lindgren2011}. The inference is performed using the \\texttt{R-INLA} package of \\citet{art451}, which allows us to perform fast approximate inference on quite complicated models. The new method is tested on a real point pattern data set as well as two interesting extensions to the classical LGCP framework. The first extension considers the very real problem of variable sampling effort throughout the observation window and implements the method of \\citet{Chakraborty2011}. The second extension moves beyond what is possible with current techniques and constructs a log-Gaussian Cox process on the world's oceans. Code for the examples can be fo...

  15. Statistical quality control for volumetric modulated arc therapy (VMAT) delivery using machine log data

    E-Print Network [OSTI]

    Cheong, Kwang-Ho; Kang, Sei-Kwon; Yoon, Jai-Woong; Park, Soah; Hwang, Taejin; Kim, Haeyoung; Kim, Kyoung Ju; Han, Tae Jin; Bae, Hoonsik

    2015-01-01T23:59:59.000Z

    The aim of this study is to set up statistical quality control for monitoring of volumetric modulated arc therapy (VMAT) delivery error using machine log data. Eclipse and Clinac iX linac with the RapidArc system (Varian Medical Systems, Palo Alto, USA) is used for delivery of the VMAT plan. During the delivery of the RapidArc fields, the machine determines the delivered motor units (MUs) and gantry angle position accuracy and the standard deviations of MU (sigma_MU; dosimetric error) and gantry angle (sigma_GA; geometric error) are displayed on the console monitor after completion of the RapidArc delivery. In the present study, first, the log data was analyzed to confirm its validity and usability; then, statistical process control (SPC) was applied to monitor the sigma_MU and sigma_GA in a timely manner for all RapidArc fields: a total of 195 arc fields for 99 patients. The sigma_MU and sigma_GA were determined twice for all fields, that is, first during the patient-specific plan QA and then again during th...

  16. Coal log pipeline research at the University of Missouri. 4th Quarterly report for 1994, October 1, 1994--December 31, 1994

    SciTech Connect (OSTI)

    Liu, H.; Wilson, J.W.

    1995-06-01T23:59:59.000Z

    Several factors involved in coal log fabrication, storage and handling, such as curing time, aspect ratio and particle size distribution, were evaluated during the fourth quarter of 1994. When Orimulsion is used for coal log fabrication, a certain period of time is required to build up the strength of coal log. From the test results obtained, the longer the curing period the greater the wear resistance of the coal log. From previous studies, the coal log length to diameter ratio (aspect) was found to be an important factor affecting coal log performance during the pipeline degradation test. From the 2 inches pipeline degradation test results, coal logs with aspect ratios ranging from 1.6 to 2.2 traveled in a more stable manner, and had lower weight loss than coal logs with aspect ratios less than 1.6. The influence of particle size on the performance of a coal log was evaluated to determine the optimum particle size for coal log fabrication, based on practical and economical considerations.

  17. 1. c) For all five types, the distribution is quite symmetric. Hearthlog typically burns the longest, with a mean of about 2:40. Wax Logs and Duraflame have a mean about 10 minutes lower. Hot

    E-Print Network [OSTI]

    Preston, Scott

    the longest, with a mean of about 2:40. Wax Logs and Duraflame have a mean about 10 minutes lower. Hot Logs:15. For all but Wax Logs, the distributions have similar variability ­ each has a standard deviation around 9 minutes. Wax Logs burn more consistently near the mean time ­ the standard deviation is just over 5

  18. Drilling, logging, and testing information from borehole UE-25 UZ{number_sign}16, Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Thamir, F.; Thordarson, W.; Kume, J.; Rousseau, J. [Geological Survey, Denver, CO (United States). Yucca Mountain Project Branch; Long, R. [Dept. of Energy, Las Vegas, NV (United States); Cunningham, D.M. Jr. [Science Applications International Corp., Las Vegas, NV (United States)

    1998-09-01T23:59:59.000Z

    Borehole UE-25 UZ{number_sign}16 is the first of two boreholes that may be used to determine the subsurface structure at Yucca Mountain by using vertical seismic profiling. This report contains information collected while this borehole was being drilled, logged, and tested from May 27, 1992, to April 22, 1994. It does not contain the vertical seismic profiling data. This report is intended to be used as: (1) a reference for drilling similar boreholes in the same area, (2) a data source on this borehole, and (3) a reference for other information that is available from this borehole. The reference information includes drilling chronology, equipment, parameters, coring methods, penetration rates, completion information, drilling problems, and corrective actions. The data sources include lithology, fracture logs, a list of available borehole logs, and depths at which water was recorded. Other information is listed in an appendix that includes studies done after April 22, 1994.

  19. How To Complete Export Control Training 1. Log into CITI, then you'll be brought to your main menu.

    E-Print Network [OSTI]

    Alpay, S. Pamir

    How To Complete Export Control Training 1. Log into CITI, then you'll be brought to your main menu To Complete Export Control Training 2. Scroll towards the bottom of the page to CITI Course Enrollment questions to question 4: Question 4 US Export Control Regulations Please make your selection below

  20. NASA Home > News & Features > News Topics > Solar System > Features Send Print Share > Log In To MyNASA | > Sign Up

    E-Print Network [OSTI]

    Arizona, University of

    overhead to provide a birds-eye view of mountain ranges, lakes and canyons. On the ground, a rover or lakeNASA Home > News & Features > News Topics > Solar System > Features Send Print Share > Log In To MyNASA | > Sign Up News & Features News Topics Shuttle & Station Moon & Mars Solar System Sun-Earth System

  1. A NOVEL APPROACH TO SOFT-MASK ESTIMATION AND LOG-SPECTRAL ENHANCEMENT FOR ROBUST SPEECH RECOGNITION

    E-Print Network [OSTI]

    Alwan, Abeer

    A NOVEL APPROACH TO SOFT-MASK ESTIMATION AND LOG-SPECTRAL ENHANCEMENT FOR ROBUST SPEECH RECOGNITION-- Speech Recognition, Feature Extraction, Speech Enhancement, Mask Estimation, Median Filtering. 1 enhancement. Reliable SPPs provide clues about the spectro-temporal location of speech and are thus a highly

  2. Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case study

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Availability Assessment of SunOS/Solaris Unix Systems based on Syslogd and wtmpx log files: A case 4 -- France Mohamed.Kaaniche@laas.fr Abstract This paper presents a measurement-based availability, downtimes and availability based on the identification of failures that caused total service loss. Data

  3. Functional structure of ant and termite assemblages in old growth forest, logged forest and oil palm plantation in Malaysian Borneo

    E-Print Network [OSTI]

    Luke, Sarah H.; Fayle, Tom M.; Eggleton, Paul; Turner, Edgar C.; Davies, Richard G.

    2014-07-30T23:59:59.000Z

    ORI GIN AL PA PER Functional structure of ant and termite assemblages in old growth forest, logged forest and oil palm plantation in Malaysian Borneo Sarah H. Luke • Tom M. Fayle • Paul Eggleton • Edgar C. Turner • Richard G. Davies Received: 25...

  4. Towards a systematic analysis of cluster computing log data: the case of IBM BlueGene/Q

    E-Print Network [OSTI]

    Towards a systematic analysis of cluster computing log data: the case of IBM BlueGene/Q Alina S^irbu, Ozalp Babaoglu Department of Computer Science and Engineering, University of Bologna Mura Anteo Zamboni and complexity of managing large comput- ing infrastructures has been on the rise. Automating management actions

  5. The thermal maturation degree of organic matter from source rocks revealed by wells logs including examples from Murzuk Basin, Libya

    SciTech Connect (OSTI)

    Negoita, V.; Gheorghe, A.

    1995-08-01T23:59:59.000Z

    The customary technique used to know the organic matter quantity per rock volume it as well as the organic matter maturation stage is based on geochemical analyses accomplished on a preselected number of samples and cuttings drawn from boreholes during the drilling period. But the same objectives can be approached without any extra cost using the continuous measurements of well logs recorded in each well from the ground surface to the total depth. During the diagenetic stage, the identification of potential source rocks out of which no hydrocarbon have been generated may be carried out using a well logging suite including Gamma Ray Spectrometry, the Compensated Neutron/Litho Density combination and a Dual Induction/Sonic Log. During the catagenetic stage the onset of oil generation brings some important changes in the organic matter structure as well as in the fluid distribution throughout the pore space of source rocks. The replacement of electric conductive water by electric non-conductive hydrocarbons, together with water and oil being expelled from source rocks represent a process of different intensities dependent of time/temperature geohistory and kerogen type. The different generation and expulsion scenarios of hydrocarbons taking place during the catagenetic and metagenetic stages of source rocks are very well revealed by Induction and Laterolog investigations. Several crossplots relating vitrinite reflectance, total organic carbon and log-derived physical parameters are illustrated and discussed. The field applications are coming from Murzuk Basin, where Rompetrol of Libya is operating.

  6. Command Line Arguments Log into your Unix account and create a directory called csc2405 in your home directory.

    E-Print Network [OSTI]

    Command Line Arguments Log into your Unix account and create a directory called csc2405 in your. Complete the three exercises below, making sure you understand the use of command line arguments in your program. Exercise 1 C, C++ and Java allow you to input values into your program through the command line

  7. 2004 Indian River Lease Area, Indian River County Quality Assurance/Quality Control (QA/QC) Log

    E-Print Network [OSTI]

    Florida, University of

    the month. This includes information on fouling, equipment failures and whether post-deployment checks were or a lack of standardization between the two sondes). Notes regarding reliability of data (whether/Quality Control (QA/QC) Log General Notes on Reliability of Data: 1) In general, measurements of temperature

  8. Annual Logging Symposium, June 21-24, 2009 Wireline and While-Drilling Formation-Tester Sampling with Oval, Focused,

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    . Extending the existing wireline technology requires a new pumping system capable of removing invasion fluidsSPWLA 50th Annual Logging Symposium, June 21-24, 2009 1 Wireline and While-Drilling Formation about the potential of developing new fluid sampling methods with probe-type formation testers has

  9. Annual Logging Symposium, June 19-23, 2010 Formation Evaluation in the Bakken Complex Using Laboratory Core Data

    E-Print Network [OSTI]

    reservoirs, such as the Bakken Shale and its adjoining formations, the Three Forks dolomite, Sanish mudstone Using Laboratory Core Data and Advanced Logging Technologies Sandeep Ramakrishna, Ron Balliet, Danny and Lower Bakken Shales are organic rich source rocks. Hydrocarbon fluid identification, volumes

  10. Effect of differential subsidence in growth-faulted regions on E-log patterns and preservation potential

    SciTech Connect (OSTI)

    Edwards, M.B.

    1985-02-01T23:59:59.000Z

    Detailed electric log correlation, supplemented by cores, in the Eocene Wilcox Group and the Oligocene Frio Formation of the Texas Gulf basin contradicts a commonly held notion that changes in log character across growth faults exclusively reflect changes in environment. An invariable consequence of growth faulting is thickening of a depositional unit in the downthrown block, reflecting a greater subsidence rate. The growth ratio (downthrown or upthrown) varies from just over 1:1 to as much as 10:1. Analysis and mapping of log character indicate that the basic unit of both deposition and physical correlation is regressive coarsening-upward sequences. In Wilcox deltas, prodelta shales pass up into delta-front sandstones while in Frio barrier-bar or standplains, shelf and lower-shoreface deposits pass up into upper-shoreface sandstones. Regressive packages grade downdip in environment from delta plain and bay or lagoon to offshore marine. Growth faults had no significant surface expression and did not separate contrasting environments. A marked change in log character (e.g., from smooth to serrated) across a growth fault in a regressive shoreface sequence appears to indicate that the subsidence rate of the downthrown block exceeded a threshold value, enabling preservation of low-energy muddy layers and possibly episodic waning-flow storm deposits that were largely destroyed by fair-weather wave reworking on the upthrown block. This concept has implications both to regional stratigraphy and reservoir properties. Correlative units can abruptly change log character across growth faults, impeding correlation. Sandstones in the downthrown block may contain shale barriers to vertical fluid flow if the threshold subsidence rate was exceeded.

  11. COMMIX-PPC: A three-dimensional transient multicomponent computer program for analyzing performance of power plant condensers. Volume 1, Equations and numerics

    SciTech Connect (OSTI)

    Chien, T.H.; Domanus, H.M.; Sha, W.T.

    1993-02-01T23:59:59.000Z

    The COMMIX-PPC computer pregrain is an extended and improved version of earlier COMMIX codes and is specifically designed for evaluating the thermal performance of power plant condensers. The COMMIX codes are general-purpose computer programs for the analysis of fluid flow and heat transfer in complex Industrial systems. In COMMIX-PPC, two major features have been added to previously published COMMIX codes. One feature is the incorporation of one-dimensional equations of conservation of mass, momentum, and energy on the tube stile and the proper accounting for the thermal interaction between shell and tube side through the porous-medium approach. The other added feature is the extension of the three-dimensional conservation equations for shell-side flow to treat the flow of a multicomponent medium. COMMIX-PPC is designed to perform steady-state and transient. Three-dimensional analysis of fluid flow with heat transfer tn a power plant condenser. However, the code is designed in a generalized fashion so that, with some modification, it can be used to analyze processes in any heat exchanger or other single-phase engineering applications. Volume I (Equations and Numerics) of this report describes in detail the basic equations, formulation, solution procedures, and models for a phenomena. Volume II (User`s Guide and Manual) contains the input instruction, flow charts, sample problems, and descriptions of available options and boundary conditions.

  12. Illegal Logging Gives EU Massive Eco-Headache With tropical rainforests continuing to disappear at an alarming rate, the EU is partially to

    E-Print Network [OSTI]

    17.04.2008 Illegal Logging Gives EU Massive Eco-Headache With tropical rainforests continuing. The problem of illegal logging is particularly acute in Indonesia, allegedly the world's third largest gases and global warming, rising demand for palm oil has resulted in local companies burning woods

  13. Parameter estimation from flowing fluid temperature logging data in unsaturated fractured rock using multiphase inverse modeling

    SciTech Connect (OSTI)

    Mukhopadhyay, S.; Tsang, Y.; Finsterle, S.

    2009-01-15T23:59:59.000Z

    A simple conceptual model has been recently developed for analyzing pressure and temperature data from flowing fluid temperature logging (FFTL) in unsaturated fractured rock. Using this conceptual model, we developed an analytical solution for FFTL pressure response, and a semianalytical solution for FFTL temperature response. We also proposed a method for estimating fracture permeability from FFTL temperature data. The conceptual model was based on some simplifying assumptions, particularly that a single-phase airflow model was used. In this paper, we develop a more comprehensive numerical model of multiphase flow and heat transfer associated with FFTL. Using this numerical model, we perform a number of forward simulations to determine the parameters that have the strongest influence on the pressure and temperature response from FFTL. We then use the iTOUGH2 optimization code to estimate these most sensitive parameters through inverse modeling and to quantify the uncertainties associated with these estimated parameters. We conclude that FFTL can be utilized to determine permeability, porosity, and thermal conductivity of the fracture rock. Two other parameters, which are not properties of the fractured rock, have strong influence on FFTL response. These are pressure and temperature in the borehole that were at equilibrium with the fractured rock formation at the beginning of FFTL. We illustrate how these parameters can also be estimated from FFTL data.

  14. Improving the Monitoring, Verification, and Accounting of CO{sub 2} Sequestered in Geologic Systems with Multicomponent Seismic Technology and Rock Physics Modeling

    SciTech Connect (OSTI)

    Alkan, Engin; DeAngelo, Michael; Hardage, Bob; Sava, Diana; Sullivan, Charlotte; Wagner, Donald

    2012-12-31T23:59:59.000Z

    Research done in this study showed that P-SV seismic data provide better spatial resolution of geologic targets at our Appalachian Basin study area than do P-P data. This finding is important because the latter data (P-P) are the principal seismic data used to evaluate rock systems considered for CO{sub 2} sequestration. The increase in P-SV{sub 1} resolution over P-P resolution was particularly significant, with P-SV{sub 1} wavelengths being approximately 40-percent shorter than P-P wavelengths. CO{sub 2} sequestration projects across the Appalachian Basin should take advantage of the increased resolution provided by converted-shear seismic modes relative to P-wave seismic data. In addition to S-wave data providing better resolution of geologic targets, we found S-wave images described reservoir heterogeneities that P-P data could not see. Specifically, a channel-like anomaly was imaged in a key porous sandstone interval by P-SV{sub 1} data, and no indication of the feature existed in P-P data. If any stratigraphic unit is considered for CO{sub 2} storage purposes, it is important to know all heterogeneities internal to the unit to understand reservoir compartmentalization. We conclude it is essential that multicomponent seismic data be used to evaluate all potential reservoir targets whenever a CO{sub 2} storage effort is considered, particularly when sequestration efforts are initiated in the Appalachian Basin. Significant differences were observed between P-wave sequences and S- wave sequences in data windows corresponding to the Oriskany Sandstone, a popular unit considered for CO{sub 2} sequestration. This example demonstrates that S-wave sequences and facies often differ from P-wave sequences and facies and is a principle we have observed in every multicomponent seismic interpretation our research laboratory has done. As a result, we now emphasis elastic wavefield seismic stratigraphy in our reservoir characterization studies, which is a science based on the concept that the same weight must be given to S-wave sequences and facies as is given to P-wave sequences and facies. This philosophy differs from the standard practice of depending on only conventional P-wave seismic stratigraphy to characterize reservoir units. The fundamental physics of elastic wavefield seismic stratigraphy is that S- wave modes sense different sequences and facies across some intervals than does a P-wave mode because S-wave displacement vectors are orthogonal to P- wave displacement vectors and thus react to a different rock fabric than do P waves. Although P and S images are different, both images can still be correct in terms of the rock fabric information they reveal.

  15. Can reductions in logging damage increase carbon storage over time? Evaluation of a simulation model for a pilot carbon offset project in Malaysia

    SciTech Connect (OSTI)

    Pinard, M.A. [Univ. of Florida, Gainesville, FL (United States)

    1995-09-01T23:59:59.000Z

    Selective timber harvesting operations, if uncontrolled, can severely degrade a forest. Although techniques for reducing logging damage are well-known and inexpensive to apply, incentives to adopt these techniques are generally lacking. Power companies and other emitters of {open_quotes}greenhouse{close_quotes} gases soon may be forced to reduce or otherwise offset their net emissions; one offset option is to fund programs aimed at reducing logging damage. To investigate the consequences of reductions in logging damage for ecosystem carbon storage, I constructed a model to simulate changes in biomass and carbon pools following logging of primary dipterocarp forests in southeast Asia. I adapted a physiologically-driven, tree-based model of natural forest gap dynamics (FORMIX) to simulate forest recovery following logging. Input variables included stand structure, volume extracted, stand damage (% stems), and soil disturbance (% area compacted). Output variables included total biomass, tree density, and total carbon storage over time. Assumptions of the model included the following: (1) areas with soil disturbances have elevated probabilities of vine colonization and reduced rates of tree establishment, (2) areas with broken canopy but no soil disturbance are colonized initially by pioneer tree species and 20 yr later by persistent forest species, (3) damaged trees have reduced growth and increased mortality rates. Simulation results for two logging techniques, conventional and reduced-impact logging, are compared with data from field studies conducted within a pilot carbon offset project in Sabah, Malaysia.

  16. LogTool: A Flexible, Publicly Available Data Analysis Tool Providing Graphical Analysis, Extraction of Data Subsets and Daytyping for Multiple Data Formats

    E-Print Network [OSTI]

    Qualmann, R. L.; Goudge, P.; Baker, M.

    2007-01-01T23:59:59.000Z

    data collected for use in the AIRMaster+ compressed air simulation software. LogTool v1 was an application comprising Excel VBA modules and Visual Basic 6.0 modules. It stored logger data in hidden Excel worksheets. LogTool v2 is written... and flexible process as described below. Getting Started When LogTool is initiated, a ?splash? screen will appear providing the version and a brief description of the software. Click ?Continue? to open a blank main screen as shown in Figure 1. The ?Help...

  17. Vegetation History And Logging Disturbance: Effects On Rain Forest In The Lope Reserve, Gabon (With Special Emphasis On Elephants and Apes) 

    E-Print Network [OSTI]

    White, Lee JT

    An investigation of the effects of commercial mechanised selective logging on rain forest vegetation and mammals, was undertaken in the Lope Reserve, central Gabon, between January 1989 to July 1991. Vegetation in Lope ...

  18. Join Binghamton University's new walking program! Register and log your steps online using the American Heart Association's Activity Tracker. Join the

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    Join Binghamton University's new walking program! Register and log your email address will be your unique identifier · Under "Company" ­ click "search for company" and type in Binghamton University, hit select · Complete personal

  19. Quantifying the Permeability Heterogeneity of Sandstone Reservoirs in Boonsville Field, Texas by Integrating Core, Well Log and 3D Seismic Data

    E-Print Network [OSTI]

    Song, Qian

    2013-04-29T23:59:59.000Z

    the permeability heterogeneity of the target reservoir by integrating core, well log and 3D seismic data. A set of permeability coefficients, variation coefficient, dart coefficient, and contrast coefficient, was defined in this study to quantitatively identify...

  20. Simulation of eccentricity effects on short-and long-normal logging measurements using a Fourier-hp-finite-element method*

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    1 Korea Institute of Geoscience and Mineral Resources (KIGAM), Gwahang-no 92, Yuseong-gu, Daejeon matter of primary concern due to global warming. The main limitations of resistivity logging are due

  1. Overpressure prediction by mean total stress estimate using well logs for compressional environments with strike-slip or reverse faulting stress state

    E-Print Network [OSTI]

    Ozkale, Aslihan

    2007-04-25T23:59:59.000Z

    OVERPRESSURE PREDICTION BY MEAN TOTAL STRESS ESTIMATE USING WELL LOGS FOR COMPRESSIONAL ENVIRONMENTS WITH STRIKE-SLIP OR REVERSE FAULTING STRESS STATE A Thesis by ASLIHAN OZKALE Submitted to the Office of Graduate Studies... of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2006 Major Subject: Petroleum Engineering OVERPRESSURE PREDICTION BY MEAN TOTAL STRESS ESTIMATE USING WELL LOGS...

  2. Identification and Characterization of Hydrogeologic Units at the Nevada Test Site Using Geophysical Logs: Examples from the Underground Test Area Project

    SciTech Connect (OSTI)

    Lance Prothro, Sigmund Drellack, Margaret Townsend

    2009-03-25T23:59:59.000Z

    The diverse and complex geology of the Nevada Test Site region makes for a challenging environment for identifying and characterizing hydrogeologic units penetrated by wells drilled for the U.S. Department of Energy, National Nuclear Security Administration, Underground Test Area (UGTA) Environmental Restoration Sub-Project. Fortunately, UGTA geoscientists have access to large and robust sets of subsurface geologic data, as well as a large historical knowledge base of subsurface geological analyses acquired mainly during the underground nuclear weapons testing program. Of particular importance to the accurate identification and characterization of hydrogeologic units in UGTA boreholes are the data and interpretation principles associated with geophysical well logs. Although most UGTA participants and stakeholders are probably familiar with drill hole data such as drill core and cuttings, they may be less familiar with the use of geophysical logs; this document is meant to serve as a primer on the use of geophysical logs in the UGTA project. Standard geophysical logging tools used in the UGTA project to identify and characterize hydrogeologic units are described, and basic interpretation principles and techniques are explained. Numerous examples of geophysical log data from a variety of hydrogeologic units encountered in UGTA wells are presented to highlight the use and value of geophysical logs in the accurate hydrogeologic characterization of UGTA wells.

  3. Summary Report of Geophysical Logging For The Seismic Boreholes Project at the Hanford Site Waste Treatment Plant.

    SciTech Connect (OSTI)

    Gardner, Martin G.; Price, Randall K.

    2007-02-01T23:59:59.000Z

    During the period of June through October 2006, three deep boreholes and one corehole were drilled beneath the site of the Waste Treatment Plant (WTP) at the U.S. Department of Energy (DOE) Hanford Site near Richland, Washington. The boreholes were drilled to provide information on ground-motion attenuation in the basalt and interbedded sediments underlying the WTP site. This report describes the geophysical logging of the deep boreholes that was conducted in support of the Seismic Boreholes Project, defined below. The detailed drilling and geological descriptions of the boreholes and seismic data collected and analysis of that data are reported elsewhere.

  4. Development and demonstration of an enhanced spreadsheet-based well log analysis software. Final report, May 1998

    SciTech Connect (OSTI)

    Watney, W.L.; Doveton, J.H.; Guy, W.J.

    1998-10-01T23:59:59.000Z

    The Advanced Class Work Program is a field-based research and demonstration program for demonstration of advanced or improved technologies identified in the Department of Energy`s Class Field Demonstration Projects. The objective of the Advanced Class Work program is to conduct field demonstrations of technologies for which a small, incremental amount of work will produce or improve a transferable, useful technology for oil recovery. The goal of the program is to enhance the products of near-term Class projects and maximize the applicability and effectiveness of project results. PfEFFER (Petrofacies Evaluation of Formations For Engineering Reservoirs) is a well log analysis computer package. The software was tested and successfully applied in Schaben Field, a DOE Class 2 Field Demonstration Project to assist in improving reservoir characterization and assessing reservoir performance. PfEFFER v.1 was released in January, 1996 as a commercial spreadsheet-based well-log analysis program developed and distributed through the Kansas Geological Survey. The objectives of this project were: Task 1 -- Enhance the PfEFFER software package; Task 2 -- Develop major new modules to significantly augment PfEFFER capabilities; Task 3 -- Conduct field demonstration of software application using the necessary reservoir data acquired from oil operators and construct a database; and Task 4 -- Perform technology transfer activities that include workshops, reports, presentations, or other methods to communicate results to interested parties.

  5. Consortium for coal log pipeline research and development. Final technical progress report, August 10, 1993--August 9, 1996

    SciTech Connect (OSTI)

    Marrero, T.R.

    1996-10-01T23:59:59.000Z

    The main objective of this project was to conduct intensive research and development of the Coal Log Pipeline (CLP). Specifically, the R & D was to concentrate on previously neglected and insufficiently studied aspects of CLP which were deemed significant. With improvements in these areas, CLP could be implemented for commercial use within five years. CLP technology is capable of transporting coal logs for long distances. The many potential advantages of CLP over truck and railroad transportation include: lower freight costs, less energy consumption, less air pollution, decreased environmental problems, increased safety, and improved reliability. Previous studies have shown that CLP is advantageous over slurry pipeline technology. First, CLP uses one-third the water required by a coal slurry pipeline. Second, CLP provides easier coal dewatering. Third, the CLP conveying capacity of coal is twice as much as a slurry transport line of equal diameter. In many situations, the cost for transporting each ton of coal is expected to be less expensive by CLP as compared to other competing modes of transportation such as: truck, unit train and slurry pipeline.

  6. Page-Differential Logging: An Efficient and DBMS-independent Approach for Storing Data into Flash Memory

    E-Print Network [OSTI]

    Kim, Yi-Reun; Song, Il-Yeol

    2010-01-01T23:59:59.000Z

    Flash memory is widely used as the secondary storage in lightweight computing devices due to its outstanding advantages over magnetic disks. Flash memory has many access characteristics different from those of magnetic disks, and how to take advantage of them is becoming an important research issue. There are two existing approaches to storing data into flash memory: page-based and log-based. The former has good performance for read operations, but poor performance for write operations. In contrast, the latter has good performance for write operations when updates are light, but poor performance for read operations. In this paper, we propose a new method of storing data, called page-differential logging, for flash-based storage systems that solves the drawbacks of the two methods. The primary characteristics of our method are: (1) writing only the difference (which we define as the page-differential) between the original page in flash memory and the up-to-date page in memory; (2) computing and writing the pag...

  7. Multicomponent affinity radial flow chromatography

    E-Print Network [OSTI]

    Gu, Tingyue

    procedure thut uses thejnite element, the orthogonal collocation, (2nd the Gear's stijfrnethods. Kinetic.lrrorntrtogrrrphy-frontal adsorption, wash, und elution-have been .simulated. The ejJects ofthe cwncentrrrtion and the (finit

  8. Multicomponent Seismic Technology Assessment of

    E-Print Network [OSTI]

    Texas at Austin, University of

    , and R. Boswell, eds., Natural gas hydrates--Energy resource potential and associated geologic hazards) in the Green Canyon area of the northern Gulf of Mexico were analyzed in this study. These expulsion features

  9. MULTICOMPONENT SEISMIC ANALYSIS AND CALIBRATION TO IMPROVE RECOVERY FROM ALGAL MOUNDS: APPLICATION TO THE ROADRUNNER/TOWAOC AREA OF THE PARADOX BASIN, UTE MOUNTAIN UTE RESERVATION, COLORADO

    SciTech Connect (OSTI)

    Paul La Pointe; Claudia Rebne; Steve Dobbs

    2003-07-10T23:59:59.000Z

    This report describes the results made in fulfillment of contract DE-FG26-02NT15451, ''Multicomponent Seismic Analysis and Calibration to Improve Recovery from Algal Mounds: Application to the Roadrunner/Towaoc Area of the Paradox Basin, Ute Mountain Ute Reservation, Colorado''. Optimizing development of highly heterogeneous reservoirs where porosity and permeability vary in unpredictable ways due to facies variations can be challenging. An important example of this is in the algal mounds of the Lower and Upper Ismay reservoirs of the Paradox Basin in Utah and Colorado. It is nearly impossible to develop a forward predictive model to delineate regions of better reservoir development, and so enhanced recovery processes must be selected and designed based upon data that can quantitatively or qualitatively distinguish regions of good or bad reservoir permeability and porosity between existing well control. Recent advances in seismic acquisition and processing offer new ways to see smaller features with more confidence, and to characterize the internal structure of reservoirs such as algal mounds. However, these methods have not been tested. This project will acquire cutting edge, three-dimensional, nine-component (3D9C) seismic data and utilize recently-developed processing algorithms, including the mapping of azimuthal velocity changes in amplitude variation with offset, to extract attributes that relate to variations in reservoir permeability and porosity. In order to apply advanced seismic methods a detailed reservoir study is needed to calibrate the seismic data to reservoir permeability, porosity and lithofacies. This will be done by developing a petrological and geological characterization of the mounds from well data; acquiring and processing the 3D9C data; and comparing the two using advanced pattern recognition tools such as neural nets. In addition, should the correlation prove successful, the resulting data will be evaluated from the perspective of selecting alternative enhanced recovery processes, and their possible implementation. The work is being carried out on the Roadrunner/Towaoc Fields of the Ute Mountain Ute Tribe, located in the southwestern corner of Colorado. Although this project is focused on development of existing resources, the calibration established between the reservoir properties and the 3D9C seismic data can also enhance exploration success. During the time period covered by this report, the majority of the project effort has gone into the permitting, planning and design of the 3D seismic survey, and to select a well for the VSP acquisition. The business decision in October, 2002 by WesternGeco, the projects' seismic acquisition contractor, to leave North America, has delayed the acquisition until late summer, 2003. The project has contracted Solid State, a division of Grant Geophysical, to carry out the acquisition. Moreover, the survey has been upgraded to a 3D9C from the originally planned 3D3C survey, which should provide even greater resolution of mounds and internal mound structure.

  10. Use of treatment log files in spot scanning proton therapy as part of patient-specific quality assurance

    SciTech Connect (OSTI)

    Li Heng; Sahoo, Narayan; Poenisch, Falk; Suzuki, Kazumichi; Li Yupeng; Li Xiaoqiang; Zhang Xiaodong; Gillin, Michael T.; Zhu, X. Ronald [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States); Lee, Andrew K. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)

    2013-02-15T23:59:59.000Z

    Purpose: The purpose of this work was to assess the monitor unit (MU) values and position accuracy of spot scanning proton beams as recorded by the daily treatment logs of the treatment control system, and furthermore establish the feasibility of using the delivered spot positions and MU values to calculate and evaluate delivered doses to patients. Methods: To validate the accuracy of the recorded spot positions, the authors generated and executed a test treatment plan containing nine spot positions, to which the authors delivered ten MU each. The spot positions were measured with radiographic films and Matrixx 2D ion-chambers array placed at the isocenter plane and compared for displacements from the planned and recorded positions. Treatment logs for 14 patients were then used to determine the spot MU values and position accuracy of the scanning proton beam delivery system. Univariate analysis was used to detect any systematic error or large variation between patients, treatment dates, proton energies, gantry angles, and planned spot positions. The recorded patient spot positions and MU values were then used to replace the spot positions and MU values in the plan, and the treatment planning system was used to calculate the delivered doses to patients. The results were compared with the treatment plan. Results: Within a treatment session, spot positions were reproducible within {+-}0.2 mm. The spot positions measured by film agreed with the planned positions within {+-}1 mm and with the recorded positions within {+-}0.5 mm. The maximum day-to-day variation for any given spot position was within {+-}1 mm. For all 14 patients, with {approx}1 500 000 spots recorded, the total MU accuracy was within 0.1% of the planned MU values, the mean (x, y) spot displacement from the planned value was (-0.03 mm, -0.01 mm), the maximum (x, y) displacement was (1.68 mm, 2.27 mm), and the (x, y) standard deviation was (0.26 mm, 0.42 mm). The maximum dose difference between calculated dose to the patient based on the plan and recorded data was within 2%. Conclusions: The authors have shown that the treatment log file in a spot scanning proton beam delivery system is precise enough to serve as a quality assurance tool to monitor variation in spot position and MU value, as well as the delivered dose uncertainty from the treatment delivery system. The analysis tool developed here could be useful for assessing spot position uncertainty and thus dose uncertainty for any patient receiving spot scanning proton beam therapy.

  11. List of Publications (Reverse Chronological Order) Click on the blue publication numbers to access the full text pdfs. You may need to be logged in to your institution web pages

    E-Print Network [OSTI]

    Ojovan, Michael

    the full text pdfs. You may need to be logged in to your institution web pages to access some journal pages

  12. List of Publications (Reverse Chronological Order) Click on the blue publication numbers to access the full text pdfs. You may need to be logged in to your institution web

    E-Print Network [OSTI]

    Ojovan, Michael

    the full text pdfs. You may need to be logged in to your institution web pages to access some journal pages

  13. Inversion-based method for interpretation of logging-while-drilling density measurements acquired in high-angle and horizontal wells

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    -mail: wpreeg@austin.rr.com. 4 Schlumberger, Houston, Texas, USA. E-mail: rasmus@sugar-land.oilfield.slb.com. 5 Schlumberger, Nuclear Logging, Sugar Land, Texas, USA. E-mail: radtke@sugar-land.oilfield.slb.com. 6 Chevron ET

  14. School of Electronic, Electrical and Systems Engineering From the first time you log on to our website to when you shake

    E-Print Network [OSTI]

    Birmingham, University of

    School of Electronic, Electrical and Systems Engineering From the first time you log on to our of Electronic, Electrical and Systems Engineering Smart devices, smart solutions... smart people. #12;2 School of Electronic, Electrical and Systems Engineering Welcome I am delighted that you are interested in engineering

  15. HR System Access Request Form Security Administration, Human Resources (HR) For additional instructions and information, log onto http://hr.vanderbilt.edu/security/

    E-Print Network [OSTI]

    Simaan, Nabil

    instructions and information, log onto http://hr.vanderbilt.edu/security/ Home Department VUnet IDHR EmployeeHR System Access Request Form Security Administration, Human Resources (HR) For additional ID Name Email AddressWork Phone Home Dept Name Effective Date of Access Operator Information I

  16. Recognition and delineation of Paleokarst zones by the use of wireline logs in the bitumen-saturated upper Devonian Grosmont formation of Northeastern Alberta, Canada

    SciTech Connect (OSTI)

    Dembicki, E.A.; Machel, H.G. [Univ. of Alberta, Edmonton, Alberta (Canada)

    1996-05-01T23:59:59.000Z

    The Upper Devonian Grosmont Formation in northeastern Alberta, Canada, is a shallow-marine carbonate platform complex that was subaerially exposed for hundreds of millions of years between the Mississippian(?) and Cretaceous. During this lengthy exposure period, an extensive karst system developed that is characterized by an irregular erosional surface, meter-size (several feet) dissolution cavities, collapse breccias, sinkholes, paleosols, and fractures. The karsted Grosmont Formation, which contains giant reserves of bitumen, sub-crops beneath Cretaceous clastic sediments of the giant Athabasca tar sands deposit. The paleokarst in the Grosmont Formation can be recognized on wireline logs in relatively nonargillaceous carbonate intervals (<30 API units on the gamma-ray log) as excursions of the caliper log, off-scale neutron-density porosity readings, and severe cycle skipping of the acoustic log. The paleokarst is more prevalent in the upper units of the Grosmont Formation, and the effects of karstification decrease toward stratigraphically older and deeper units. The paleokarst usually occurs within 35 m (115 ft) of the erosional surface. The reservoir properties of the Grosmont Formation (e.g., thickness, porosity, permeability, and seal effectiveness) are significantly influenced by karstification. Depending upon the location, karstification has either benefited or degraded the reservoir characteristics. Benefits include porosity values greater than 40% (up to 100% in caverns) and permeability values of 30,000 md in severely fractured intervals. Detrimental reservoir characteristics include erosion, porosity and permeability reduction, and seal ineffectiveness.

  17. DARS BATCH QUICK REFERENCE 1. Log on to http://dars.services.wisc.edu using your NetID and password

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    DARS BATCH QUICK REFERENCE 1. Log on to http://dars.services.wisc.edu using your NetID and password. #12;5. You can monitor the status of your request on the DARS Batch Recent Requests Summary page. a. Contact the DARS administrator if the request is pending their approval. b. Click View Requested Reports

  18. Instructions for using Power Scan 2000 1. If you are an authorized University of Memphis user, log in with your UUID and

    E-Print Network [OSTI]

    Memphis, University of

    in with your UUID and password. Once logged in, you can save items to the desktop and then transfer the file, or saved to a removable storage device. To print, guests should click on Go Print. The print job will go Rotate Mirror Straighten #12;To scan an image for printing/saving, drag the green box to frame the page

  19. Recovery Efficiency Test Project: Phase 1, Activity report. Volume 1: Site selection, drill plan preparation, drilling, logging, and coring operations

    SciTech Connect (OSTI)

    Overbey, W.K. Jr.; Carden, R.S.; Kirr, J.N.

    1987-04-01T23:59:59.000Z

    The recovery Efficiency Test well project addressed a number of technical issues. The primary objective was to determine the increased efficiency gas recovery of a long horizontal wellbore over that of a vertical wellbore and, more specifically, what improvements can be expected from inducing multiple hydraulic fractures from such a wellbore. BDM corporation located, planned, and drilled a long radius turn horizontal well in the Devonian shale Lower Huron section in Wayne County, West Virginia, demonstrating that state-of-the-art technology is capable of drilling such wells. BDM successfully tested drilling, coring, and logging in a horizontal well using air as the circulating medium; conducted reservoir modeling studies to protect flow rates and reserves in advance of drilling operations; observed two phase flow conditions in the wellbore not observed previously; cored a fracture zone which produced gas; observed that fractures in the core and the wellbore were not systematically spaced (varied from 5 to 68 feet in different parts of the wellbore); observed that highest gas show rates reported by the mud logger corresponded to zone with lowest fracture spacing (five feet) or high fracture frequency. Four and one-half inch casting was successfully installed in the borehole and was equipped to isolate the horizontal section into eight (8) zones for future testing and stimulation operations. 6 refs., 48 figs., 10 tabs.

  20. (Teff,log g,[Fe/H]) Classification of Low-Resolution Stellar Spectra using Artificial Neural Networks

    E-Print Network [OSTI]

    Shawn Snider; Yuan Qu; Carlos Allende Prieto; Ted von Hippel; Timothy C. Beers; Chistopher Sneden; David L. Lambert

    1999-12-19T23:59:59.000Z

    New generation large-aperture telescopes, multi-object spectrographs, and large format detectors are making it possible to acquire very large samples of stellar spectra rapidly. In this context, traditional star-by-star spectroscopic analysis are no longer practical. New tools are required that are capable of extracting quickly and with reasonable accuracy important basic stellar parameters coded in the spectra. Recent analyses of Artificial Neural Networks (ANNs) applied to the classification of astronomical spectra have demonstrated the ability of this concept to derive estimates of temperature and luminosity. We have adapted the back-propagation ANN technique developed by von Hippel et al. (1994) to predict effective temperatures, gravities and overall metallicities from spectra with resolving power ~ 2000 and low signal-to-noise ratio. We show that ANN techniques are very effective in executing a three-parameter (Teff,log g,[Fe/H]) stellar classification. The preliminary results show that the technique is even capable of identifying outliers from the training sample.

  1. abstract.log

    E-Print Network [OSTI]

    (/usr/share/texmf-texlive/tex/latex/base/article.cls Document Class: article ... UCS: Unicode global data ) \\uc@secondtry=\\count87 \\uc@combtoks=\\toks16 ...

  2. openhole_logging.indd

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

    with a 3% KCL Polymer mud system that seems to work well for stabilizing sensitive shale zones. The lower formations are very compact and should be able to stay open without...

  3. manuscript.log

    E-Print Network [OSTI]

    ... irish, italian, latin, magyar, norsk, polis h, portuges, romanian, russian, serbian, slovak, slovene, spanish, swedish, tur kish, ukrainian, nohyphenation, loaded.

  4. model.log

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    ... interlingua, ibycus, indonesian, icelandic, italian, latin, mongolian, dutch, norsk, polish, portuguese, pinyin, romanian, russian, slovene, uppersorbian, serbian, ...

  5. segabs_final.log

    E-Print Network [OSTI]

    ... interlingua, ibycus, indonesian, icelandic, italian, latin, mongolian, dutch, norsk, polish, portuguese, pinyin, romanian, russian, slovene, uppersorbian, serbian, ...

  6. revised.log

    E-Print Network [OSTI]

    ... irish, italian, latin, magyar, norsk, polis h, portuges, romanian, russian, serbian, slovak, slovene, spanish, swedish, tur kish, ukrainian, nohyphenation, loaded.

  7. sylab.log

    E-Print Network [OSTI]

    ... latin, mongolian, dutch, norsk, polish, por tuguese, pinyin, romanian, russian, slovenian, uppersorbian, serbian, swedish, turkish, ukenglish, ukrainian, loaded.

  8. Logging in to Franklin

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

    with the following command from any UNIX, Linux, FreeBSD, etc. command shell or terminal: % ssh -l username franklin.nersc.gov There are a number of SSH-capable clients...

  9. Logging in to Edison

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatestCenter

  10. FOIA Log 2012.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederal ColumbiaASCR2FOR THEFNAL UsersofFees The

  11. FOIA Log 2013.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederal ColumbiaASCR2FOR THEFNAL UsersofFees

  12. FOIA Log 2014.xlsx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist. Category UC-lFederal ColumbiaASCR2FOR THEFNAL UsersofFees Closed

  13. AVTA Federal Fleet PEV Readiness Data Logging and Characterization Study for the National Park Service: Fort Vancouver National Historic Site

    SciTech Connect (OSTI)

    Stephen Schey; Jim Francfort

    2014-03-01T23:59:59.000Z

    Battelle Energy Alliance, LLC, managing and operating contractor for the U.S. Department of Energy’s Idaho National Laboratory, is the lead laboratory for the U.S. Department of Energy’s Advanced Vehicle Testing. Battelle Energy Alliance, LLC contracted with Intertek Testing Services, North America (ITSNA) to collect data on federal fleet operations as part of the Advanced Vehicle Testing Activity’s Federal Fleet Vehicle Data Logging and Characterization study. The Advanced Vehicle Testing Activity study seeks to collect data to validate the use of advanced electric drive vehicle transportation. This report focuses on the Fort Vancouver National Historic Site (FVNHS) fleet to identify daily operational characteristics of select vehicles and report findings on vehicle and mission characterizations to support the successful introduction of electric vehicles (EVs) into the agencies’ fleet. Individual observations of the selected vehicles provided the basis for recommendations related to EV adoption and whether a battery electric vehicle (BEV) or plug-in hybrid electric vehicle (PHEV) (collectively plug-in electric vehicles) could fulfill the mission requirements. FVNHS identified three vehicles in its fleet for consideration. While the FVNHS vehicles conduct many different missions, only two (i.e., support and pool missions) were selected by agency management to be part of this fleet evaluation. The logged vehicles included a pickup truck and a minivan. This report will show that BEVs and PHEVs are capable of performing the required missions and providing an alternative vehicle for both mission categories, because each has sufficient range for individual trips and time available each day for charging to accommodate multiple trips per day. These charging events could occur at the vehicle’s home base, high-use work areas, or in intermediate areas along routes that the vehicles frequently travel. Replacement of vehicles in the current fleet would result in significant reductions in emission of greenhouse gases and petroleum use, while also reducing fuel costs. The Vancouver, Washington area and neighboring Portland, Oregon are leaders in adoption of PEVs in the United States1. PEV charging stations, or more appropriately identified as electric vehicle supply equipment, located on the FVNHS facility would be a benefit for both FVNHS fleets and general public use. Fleet drivers and park visitors operating privately owned plug-in electric vehicles benefit by using the charging infrastructure. ITSNA recommends location analysis of the FVNHS site to identify the optimal station placement for electric vehicle supply equipment. ITSNA recognizes the support of Idaho National Laboratory and ICF International for their efforts to initiate communication with the National Parks Service and FVNHS for participation in this study. ITSNA is pleased to provide this report and is encouraged by the high interest and support from the National Park Service and FVNHS personnel

  14. Determination of Transport Properties From Flowing Fluid Temperature LoggingIn Unsaturated Fractured Rocks: Theory And Semi-Analytical Solution

    SciTech Connect (OSTI)

    Mukhopadhyay, Sumit; Tsang, Yvonne W.

    2008-08-01T23:59:59.000Z

    Flowing fluid temperature logging (FFTL) has been recently proposed as a method to locate flowing fractures. We argue that FFTL, backed up by data from high-precision distributed temperature sensors, can be a useful tool in locating flowing fractures and in estimating the transport properties of unsaturated fractured rocks. We have developed the theoretical background needed to analyze data from FFTL. In this paper, we present a simplified conceptualization of FFTL in unsaturated fractured rock, and develop a semianalytical solution for spatial and temporal variations of pressure and temperature inside a borehole in response to an applied perturbation (pumping of air from the borehole). We compare the semi-analytical solution with predictions from the TOUGH2 numerical simulator. Based on the semi-analytical solution, we propose a method to estimate the permeability of the fracture continuum surrounding the borehole. Using this proposed method, we estimated the effective fracture continuum permeability of the unsaturated rock hosting the Drift Scale Test (DST) at Yucca Mountain, Nevada. Our estimate compares well with previous independent estimates for fracture permeability of the DST host rock. The conceptual model of FFTL presented in this paper is based on the assumptions of single-phase flow, convection-only heat transfer, and negligible change in system state of the rock formation. In a sequel paper [Mukhopadhyay et al., 2008], we extend the conceptual model to evaluate some of these assumptions. We also perform inverse modeling of FFTL data to estimate, in addition to permeability, other transport parameters (such as porosity and thermal conductivity) of unsaturated fractured rocks.

  15. Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Deliverable 2.5.4, Ferron Sandstone lithologic strip logs, Emergy & Sevier Counties, Utah: Volume I

    SciTech Connect (OSTI)

    Allison, M.L.

    1995-12-08T23:59:59.000Z

    Strip logs for 491 wells were produced from a digital subsurface database of lithologic descriptions of the Ferron Sandstone Member of the Mancos Shale. This subsurface database covers wells from the parts of Emery and Sevier Counties in central Utah that occur between Ferron Creek on the north and Last Chance Creek on the south. The lithologic descriptions were imported into a logging software application designed for the display of stratigraphic data. Strip logs were produced at a scale of one inch equals 20 feet. The strip logs were created as part of a study by the Utah Geological Survey to develop a comprehensive, interdisciplinary, and qualitative characterization of a fluvial-deltaic reservoir using the Ferron Sandstone as a surface analogue. The study was funded by the U.S. Department of Energy (DOE) under the Geoscience/Engineering Reservoir Characterization Program.

  16. Remedial Action Plan and Site Design for Stabilization of the Inactive Uranium Mill Tailings Sites at Slick Rock, Colorado: Appendix B to Attachment 3, Lithologic logs and monitor well construction information. Final report

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    This volume contains lithology logs and monitor well construction information for: NC processing site; UC processing site; and Burro Canyon disposal site. This information pertains to the ground water hydrology investigations which is attachment 3 of this series of reports.

  17. Field project to obtain pressure core, wireline log, and production test data for evaluation of CO/sub 2/ flooding potential, Conoco MCA unit well No. 358, Maljamar Field, Lea County, New Mexico

    SciTech Connect (OSTI)

    Swift, T.E.; Marlow, R.E.; Wilhelm, M.H.; Goodrich, J.H.; Kumar, R.M.

    1981-11-01T23:59:59.000Z

    This report describes part of the work done to fulfill a contract awarded to Gruy Federal, Inc., by the Department of Energy (DOE) on Feburary 12, 1979. The work includes pressure-coring and associated logging and testing programs to provide data on in-situ oil saturation, porosity and permeability distribution, and other data needed for resource characterization of fields and reservoirs in which CO/sub 2/ injection might have a high probability of success. This report details the second such project. Core porosities agreed well with computed log porosities. Core water saturation and computed log porosities agree fairly well from 3692 to 3712 feet, poorly from 3712 to 3820 feet and in a general way from 4035 to 4107 feet. Computer log analysis techniques incorporating the a, m, and n values obtained from Core Laboratories analysis did not improve the agreement of log versus core derived water saturations. However, both core and log analysis indicated the ninth zone had the highest residual hydrocarbon saturations and production data confirmed the validity of oil saturation determinations. Residual oil saturation, for the perforated and tested intervals were 259 STB/acre-ft for the interval from 4035 to 4055 feet, and 150 STB/acre-ft for the interval from 3692 to 3718 feet. Nine BOPD was produced from the interval 4035 to 4055 feet and no oil was produced from interval 3692 to 3718 feet, qualitatively confirming the relative oil saturations as calculated. The low oil production in the zone from 4022 to 4055 and the lack of production from 3692 to 3718 feet indicated the zone to be at or near residual waterflood conditions as determined by log analysis. This project demonstrates the usefulness of integrating pressure core, log, and production data to realistically evaluate a reservoir for carbon dioxide flood.

  18. VLT/UVES observations of extremely strong intervening damped Lyman-alpha systems: Molecular hydrogen and excited carbon, oxygen and silicon at log N(HI)=22.4

    E-Print Network [OSTI]

    Noterdaeme, P; Rahmani, H; Petitjean, P; Pâris, I; Ledoux, C; Gupta, N; López, S

    2015-01-01T23:59:59.000Z

    We present a detailed analysis of three extremely strong intervening DLAs (log N(HI)>=21.7) observed towards quasars with VLT/UVES. We measure overall metallicities of [Zn/H]~-1.2, -1.3 and -0.7 at respectively zabs=2.34 towards SDSS J2140-0321 (log N(HI) = 22.4+/-0.1), zabs=3.35 towards SDSS J1456+1609 (log N(HI) = 21.7+/-0.1) and zabs=2.25 towards SDSS J0154+1935 (log N(HI) = 21.75+/-0.15). We detect H2 towards J2140-0321 (log N(H2) = 20.13+/-0.07) and J1456+1609 (log N(H2) = 17.10+/-0.09) and argue for a tentative detection towards J0154+1935. Absorption from the excited fine-structure levels of OI, CI and SiII are detected in the system towards J2140-0321, that has the largest HI column density detected so far in an intervening DLA. This is the first detection of OI fine-structure lines in a QSO-DLA, that also provides us a rare possibility to study the chemical abundances of less abundant atoms like Co and Ge. Simple single phase photo-ionisation models fail to reproduce all the observed quantities. Inst...

  19. AVTA Federal Fleet PEV Readiness Data Logging and Characterization Study for the National Park Service: Golden Gate National Recreation Area

    SciTech Connect (OSTI)

    Stephen Schey; Jim Francfort

    2014-03-01T23:59:59.000Z

    Battelle Energy Alliance, LLC, managing and operating contractor for the U.S. Department of Energy's Idaho National Laboratory, is the lead laboratory for U.S. Department of Energy Advanced Vehicle Testing. Battelle Energy Alliance, LLC contracted with Intertek Testing Services, North America (ITSNA) to collect data on federal fleet operations as part of the Advanced Vehicle Testing Activity's Federal Fleet Vehicle Data Logging and Characterization study. The Advanced Vehicle Testing Activity study seeks to collect data to validate the utilization of advanced electric drive vehicle transportation. This report focuses on the Golden Gate National Recreation Area (GGNRA) fleet to identify daily operational characteristics of select vehicles and report findings on vehicle and mission characterizations to support the successful introduction of plug-in electric vehicles (PEVs) into the agencies' fleets. Individual observations of these selected vehicles provide the basis for recommendations related to electric vehicle adoption and whether a battery electric vehicle or plug-in hybrid electric vehicle (PHEV) (collectively PEVs) can fulfill the mission requirements. GGNRA identified 182 vehicles in its fleet, which are under the management of the U.S. General Services Administration. Fleet vehicle mission categories are defined in Section 4, and while the GGNRA vehicles conduct many different missions, only two (i.e., support and law enforcement missions) were selected by agency management to be part of this fleet evaluation. The selected vehicles included sedans, trucks, and sport-utility vehicles. This report will show that battery electric vehicles and/or PHEVs are capable of performing the required missions and providing an alternative vehicle for support vehicles and PHEVs provide the same for law enforcement, because each has a sufficient range for individual trips and time is available each day for charging to accommodate multiple trips per day. These charging events could occur at the vehicle home base, high-use work areas, or intermediately along routes that the vehicles frequently travel. Replacement of vehicles in the current fleet would result in significant reductions in the emission of greenhouse gases and petroleum use, while also reducing fuel costs. The San Francisco Bay Area is a leader in the adoption of PEVs in the United States. PEV charging stations, or more appropriately identified as electric vehicle supply equipment, located on the GGNRA facility would be a benefit for both GGNRA fleets and general public use. Fleet drivers and park visitors operating privately owned PEVs benefit by using the charging infrastructure. ITSNA recommends location analysis of the GGNRA site to identify the optimal placement of the electric vehicle supply equipment station. ITSNA recognizes the support of Idaho National Laboratory and ICF International for their efforts to initiate communication with the National Parks Service and GGNRA for participation in the study. ITSNA is pleased to provide this report and is encouraged by the high interest and support from the National Park Service and GGNRA personnel.

  20. Application of direct-fitting, mass-integral, and multi-ratemethods to analysis of flowing fluid electric conductivity logs fromHoronobe, Japan

    SciTech Connect (OSTI)

    Doughty, C.; Tsang, C.-F.; Hatanaka, K.; Yabuuchi, S.; Kurikami, H.

    2007-08-01T23:59:59.000Z

    The flowing fluid electric conductivity (FFEC) loggingmethod is an efficient way to provide information on the depths,salinities, and transmissivities of individual conductive featuresintercepted by a borehole, without the use of specialized probes. Usingit in a multiple-flow-rate mode allows, in addition, an estimate of theinherent "far-field" pressure heads in each of the conductive features.The multi-rate method was successfully applied to a 500-m borehole in agranitic formation and reported recently. The present paper presents theapplication of the method to two zones within a 1000-m borehole insedimentary rock, which produced, for each zone, three sets of logs atdifferent pumping rates, each set measured over a period of about oneday. The data sets involve a number of complications, such as variablewell diameter, free water table decline in the well, and effects ofdrilling mud. To analyze data from this borehole, we apply varioustechniques that have been developed for analyzing FFEC logs:direct-fitting, mass-integral, and the multi-rate method mentioned above.In spite of complications associated with the tests, analysis of the datais able to identify 44 hydraulically conducting fractures distributedover the depth interval 150-775 meters below ground surface. Thesalinities (in FEC), and transmissivities and pressure heads (indimensionless form) of these 44 features are obtained and found to varysignificantly among one another. These results are compared with datafrom eight packer tests with packer intervals of 10-80 m, which wereconducted in this borehole over the same depth interval. They are foundto be consistent with these independent packer-test data, thusdemonstrating the robustness of the FFEC logging method under non-idealconditions.