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  1. Teacher Research Associates (TRAC)

    Broader source: Energy.gov [DOE]

    The goals of Fermilab's TRAC program are to provide outstanding science, mathematics, computer science, and technology teachers with professional scientific, engineering, or technical experiences...

  2. TRAC independent assessment for PWR analysis

    SciTech Connect (OSTI)

    Knight, T.D.

    1983-01-01

    LANL is developing the Transient Reactor Analysis Code (TRAC) for application to PWRs. Goal was to analyze large-break loss-of-coolant accidents (LOCAs), and the TRAC-P1A and TRAC-PD2 codes primarily addressed the large-break LOCA. The TRAC-PF1 code contained modifications which enhanced the computational speed of the code and improved its application to small-break LOCAs. The TRAC-PF1/MOD1 code added improved steam-generator modeling, a turbine component, and a control system together with modified constitutive relations to model the balance of plant on the secondary side and to extend the applications to non-LOCA transients. During the past year we assessed TRAC-PD2, TRAC-PF1, and TRAC-PF1/MOD1, using LOFT and Semiscale experiments.

  3. TRAC development and assessment status

    SciTech Connect (OSTI)

    Vigil, J.C.; Knight, T.D.

    1981-01-01

    TRAC is being developed at the Los Alamos National Laboratory to provide an advanced systems code for light-water reactor accident analysis. The released TRAC versions (P1, P1A, and PD2) were intended primarily as benchmark codes for large-break loss-of-coolant accidents but PD2 has been applied successfully to TMI-type transients and other small-break transients. A fast-running version, PFl, is currently under development to address more efficiently and accurately these types of transients. All of the released versions have been subjected to testing against separate-effects, system-effects, and integral experiments covering a wide range of scales. Assessment results indicate that PD2 does a credible job overall; needed improvements are being addressed in PFl and in modifications to PD2.

  4. Ting Xu | Center for Gas SeparationsRelevant to Clean Energy...

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

    Ting Xu Previous Next List Ting Xu Ting Xu Professor of Chemistry and Materials Science & Engineering, University of California, Berkeley Email: tingxu at berkeley.edu Phone:...

  5. TRAC code development status and plans

    SciTech Connect (OSTI)

    Spore, J.W.; Liles, D.R.; Nelson, R.A.; Dotson, P.J.; Steinke, R.G.; Knight, T.D.; Henninger, R.J.; Martinez, V.; Jenks, R.P.; Cappiello, M.W.

    1986-01-01

    This report summarizes the characteristics and current status of the TRAC-PF1/MOD1 computer code. Recent error corrections and user-convenience features are described, and several user enhancements are identified. Current plans for the release of the TRAC-PF1/MOD2 computer code and some preliminary MOD2 results are presented. This new version of the TRAC code implements stability-enhancing two-step numerics into the 3-D vessel, using partial vectorization to obtain a code that has run 400% faster than the MOD1 code.

  6. Comparison of TRAC calculations with experimental data. [PWR

    SciTech Connect (OSTI)

    Jackson, J.F.; Vigil, J.C.

    1980-01-01

    TRAC is an advanced best-estimate computer code for analyzing postulated accidents in light water reactors. This paper gives a brief description of the code followed by comparisons of TRAC calculations with data from a variety of separate-effects, system-effects, and integral experiments. Based on these comparisons, the capabilities and limitations of the early versions of TRAC are evaluated.

  7. TRAC-BD1/MOD1 user's guideline

    SciTech Connect (OSTI)

    Hanson, R G

    1985-11-01

    Code assessment studies and specific code applications have provided insight into the effective use of the TRAC-BWR series of codes. This document reports the experience gained from the studies and serves to assist the user in the effective application of the TRAC-BD1/MOD1 computer code. This document stresses the user's perspective relative to approprite use of the TRAC-BD1/MOD1 code and is considered an adjunct to other documentation provided with the code.

  8. TRAC-PD2 analysis of FLECHT experiments. [PWR

    SciTech Connect (OSTI)

    Bott, T.F.; Mandell, D.A.

    1981-01-01

    This report describes TRAC-PD2 calculations of FLECHT (Full Length Emergency Cooling Heat Transfer) tests 4831 and 17201. The calculations were performed as part of the TRAC-PD2 developmental assessment where the objective was to assess TRAC-PD2 reflood modeling under forced flooding conditions. Calculated and experimental values for peak fuel-rod clad temperature, clad quenching time, and rod bundle effluent rates are compared; and calculations with an approximate radiation heat-transfer model added to the basic TRAC-PD2 code are performed. Findings demonstrate the potential importance of surface-to-surface radiation heat transfer in these tests.

  9. TRAC-PF1/MOD1 assessment at Los Alamos

    SciTech Connect (OSTI)

    Knight, T.D.

    1984-01-01

    The Los Alamos National Laboratory is developing the Transient Reactor Analysis Code (TRAC) to provide an advanced best-estimate predictive capability for the analysis of postulated accidents in pressurized water reactors (PWRs). Over the past several years, four distinct versions of the code have been released; each new version introduced improvements to the existing models and numerics and added new models to extend the applications of the code. The first goal of the code was to analyze large-break loss-of-coolant accidents (LOCAs), and the TRAC-P1A and TRAC-PD2 codes primarily addressed the large-break LOCA. (The TRAC-PD2/MOD1 code is essentially the same as the TRAC-PD2 code but it also includes a released set of error corrections.) The TRAC-PF1 code contained major changes to the models and trips and to the numerical methods. These modifications enhanced the computational speed of the code and improved the application to small-break LOCAs. The TRAC-PF1/MOD1 code, the latest released version, added improved steam-generator modeling, a turbine component, and a control system together with modified constitutive relations to model the balance of plant on the secondary side and to extend the applications to non-LOCA transients. The TRAC-PF1/MOD1 code also contains reasonably general reactor-kinetics modeling to facilitate the simulation of transients with delayed scram or without scram. 13 references, 24 figures.

  10. TRAC-PF1 choked-flow model

    SciTech Connect (OSTI)

    Sahota, M.S.; Lime, J.F.

    1983-01-01

    The two-phase, two-component choked-flow model implemented in the latest version of the Transient Reactor analysis Code (TRAC-PF1) was developed from first principles using the characteristic analysis approach. The subcooled choked-flow model in TRAC-PF1 is a modified form of the Burnell model. This paper discusses these choked-flow models and their implementation in TRAC-PF1. comparisons using the TRAC-PF1 choked-flow models are made with the Burnell model for subcooled flow and with the homogeneous-equilibrium model (HEM) for two-phae flow. These comparisons agree well under homogeneous conditions. Generally good agreements have been obtained between the TRAC-PF1 results from models using the choking criteria and those using a fine mesh (natural choking). Code-data comparisons between the separate-effects tests of the Marviken facility and the Edwards' blowdown experiment also are favorable. 10 figures.

  11. SunTrac Solar | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren)Model for theSunLan Solar Co Ltd JumpSunRiderSunTrac Solar

  12. TRAC-P validation test matrix. Revision 1.0

    SciTech Connect (OSTI)

    Hughes, E.D.; Boyack, B.E.

    1997-09-05

    This document briefly describes the elements of the Nuclear Regulatory Commission`s (NRC`s) software quality assurance program leading to software (code) qualification and identifies a test matrix for qualifying Transient Reactor Analysis Code (TRAC)-Pressurized Water Reactor Version (-P), or TRAC-P, to the NRC`s software quality assurance requirements. Code qualification is the outcome of several software life-cycle activities, specifically, (1) Requirements Definition, (2) Design, (3) Implementation, and (4) Qualification Testing. The major objective of this document is to define the TRAC-P Qualification Testing effort.

  13. TRAC Code Modifications Made for APT Blanket Safety Analyses

    SciTech Connect (OSTI)

    Hamm, L.L.

    1998-10-07

    This report provides documentation of the necessary source code modifications made to the TRAC-PF1/MOD2 code version 5.4.28a developed at Los Alamos National Laboratory.

  14. Software design implementation document for TRAC-M data structures

    SciTech Connect (OSTI)

    Jolly-Woodruff, S. [Ogden Environmental and Energy Services (United States); Mahaffy, J. [Pennsylvania State Univ., University Park, PA (United States); Giguere, P.; Dearing, J.; Boyack, B. [Los Alamos National Lab., NM (United States)

    1997-07-01

    The Transient Reactor Analysis Code (TRAC)-M system-wide and component data structures are to be reimplemented by using the new features of Fortran 90 (F90). There will be no changes to the conceptual design, data flow, or computational flow with respect to the current TRAC-P, except that readability, maintainability, and extensibility will be improved. However, the task described here is a basic step that does not meet all future needs of the code, especially regarding extensibility. TRAC-M will be fully functional and will produce null computational changes with respect to TRAC-P, Version 5.4.25; computational efficiency will not be degraded significantly. The existing component and functional modularity and possibilities for coarse-grained parallelism will be retained.

  15. TRAC-PF1/MOD1 computer code

    SciTech Connect (OSTI)

    Liles, D.R.; Mahaffy, J.H.

    1984-01-01

    The TRAC-P1 program was designed primarily for the analysis of large-break loss-of-coolant accidents (LOCAs) in pressurized water reactors (PWRs). Because of its versatility, however, it can be applied directly to many analyses ranging from blowdowns in simple pipes to integral LOCA tests in multiloop facilities. A refined version, called TRAC-P1A, was released to the National Energy Software Center (NESC) in March 1979. Although it still treats the same class of problems, TRAC-P1A is more efficient than TRAC-P1 and incorporates improved hydrodynamic and heat-transfer models. It also is easier to implement on various computers. TRAC-PD2 contains improved reflood and heat-transfer models and improvements in the numerical solution methods. Although a large LOCA code, it has been applied successfully to small-break problems and to the Three Mile Island incident. Distinguishing characteristics of the TRAC-PF1/MOD1 are summarized.

  16. Free Energy Guided Sampling Ting Zhou and Amedeo Caflisch*

    E-Print Network [OSTI]

    Caflisch, Amedeo

    Free Energy Guided Sampling Ting Zhou and Amedeo Caflisch* Department of Biochemistry, University of Zurich, CH-8057 Zurich, Switzerland *S Supporting Information ABSTRACT: A free energy-guided sampling dynamics. Using the cut-based free energy profile and Markov state models, FEGS speeds up sampling

  17. TRAC-PF1/MOD1 computer code. [PWR

    SciTech Connect (OSTI)

    Liles, D.R.; Mahaffy, J.H.

    1983-01-01

    TRAC-PF1 was designed to improve the ability of TRAC-PD2 to handle small-break LOCAs and other transients. TRAC-PF1 has all of the major improvements of TRAC-PD2 but, in addition, uses a full two-fluid model with two-step numerics in the one-dimensional components. The two-fluid model, in conjunction with a stratified-flow regime, handles countercurrent flow better than the drift-flux model previously used. The two-step numerics allow large time steps to be taken for slow transients. TRAC-PF1/MOD1 was designed to provide full balance-of-plant modeling capabilities. This required addition of a general capability for modeling plant control systems. The steam generator model was replaced to allow a wider variety of feedwater connections and better modeling of steam tube ruptures. A special turbine component also has been added, but new components were not required for adequate modeling of condensors, heaters, and pumps in the secondary system.

  18. HealtH ScienceS Making a Difference froM cell to Society

    E-Print Network [OSTI]

    Kavanagh, Karen L.

    Faculty oF HealtH ScienceS Making a Difference froM cell to Society 2007-2012 report #12;1 table and Health Policy Analysis 32 Global Health 33 Social Inequities and Health 36 Occupational & Environmental Health 37 Chronic & Infectious Diseases 39 Mental Health and Addictions 41 Population & Public Health

  19. MELPROG/TRAC: update and applications

    SciTech Connect (OSTI)

    Henninger, R.J.; Kelly, J.E.

    1986-01-01

    The first complete, coupled, and mechanistic analysis of a core meltdown sequence has been made with MELPROG-PWR/MOD1 and MELPROG/TRAC. The sequence analyzed was a station blackout accident for the Surry plant. Through vessel failure, all important aspects of the meltdown sequence were calculated. This version of MELPROG permits a full two-dimensional treatment of the in-vessel phenomena. Natural circulation can thus be modeled. Comparison to one-dimensional MELPROG and MARCH calculations shows that natural circulation reduces the rate of core heating, but increases the rate of heating of upper plenum structures and primary piping. This increased heating can inhibit fission product deposition and may lead to an early failure of the primary system. Because of uncertainty, sensitivity studies were performed to assess the relative importance of modeling assumptions. Changes in the modeling of the initial fuel rod melting and relocation were found to vary the hydrogen source by a factor of 2 and alter the timing of key events. These results imply that accurate and mechanistic modeling is important for severe accident sequence analysis.

  20. Posttest TRAC-PD2/MOD1 predictions for FLECHT SEASET test 31504. [PWR

    SciTech Connect (OSTI)

    Booker, C.P.

    1982-01-01

    TRAC-PD2/MOD1 is a publicly released version of TRAC that is used primarily to analyze large-break loss-of-coolant accidents in pressurized-water reactors (PWRs). TRAC-PD2 can calculate, among other things, reflood phenomena. TRAC posttest predictions are compared with test 31504 reflood data from the Full-Length Emergency Core Heat Transfer (FLECHT) System Effects and Separate Effects Tests (SEASET) facility. A false top-down quench is predicted near the top of the core and the subcooling is underpredicted at the bottom of the core. However, the overall TRAC predictions are good, especially near the center of the core.

  1. The I-TRAC Curriculum: Individualized Training of Residents through Assessment and Clinical Competency

    E-Print Network [OSTI]

    Fredette, J.; Bounds, R.

    2015-01-01

    research. Impact: The I-TRAC curriculum replaces thestandardized block curriculum in which all residentsThis novel individualized curriculum responds to resident’s

  2. APT Blanket System Model Based on Initial Conceptual Design - Integrated 1D TRAC System Model

    SciTech Connect (OSTI)

    Hamm, L.L.

    1998-10-07

    This report documents the approaches taken in establishing a 1-dimensional integrated blanket system model using the TRAC code, developed by Los Alamos National Laboratory.

  3. TRAC-PF1/MOD2 status and plans

    SciTech Connect (OSTI)

    Spore, J.W.; Nelson, R.A.; Steinke, R.; Cappiello, M.; Jenks, R.

    1988-01-01

    The development of the TRAC-PF1/MOD1 code was completed in July 1988 with the release of Version 14.4. A TRAC-PF1/MOD2 code development plan addresses code deficiencies identified in the MOD1 code in order to provide an accurate and defensible tool that can be used to simulate large-break loss-of-coolant accidents (LOCAs), small-break LOCAs, and operational transients. The MOD2 code development plan is an international cooperative effort that includes contributions from Los Alamos National Laboratory, Idaho National Engineering Laboratory (INEL), Japanese Atomic Energy Research Institute (JAERI), Cray Research, Central Electricity Generating Board (CEGB), and United Kingdom Atomic Energy Authority (UKAEA). 8 refs., 7 figs.

  4. Analysis of shared buer switches under non-uniform trac pattern and global ow control

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    Analysis of shared buer switches under non-uniform trac pattern and global ¯ow control Mahmoud buer switches do not suer from head of line blocking which is a common problem in simple input buering. Shared buer switches have previously been studied under uniform and unbalanced trac patterns. However

  5. EVALUATION PLAN PROJECT TRACS: EMPIRICALLY INVESTIGATING TRANSFORMATION THROUGH RELATEDNESS, AUTONOMY, AND COMPETENCE SUPPORT

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    EVALUATION PLAN ­PROJECT TRACS: EMPIRICALLY INVESTIGATING TRANSFORMATION THROUGH RELATEDNESS OF CONTENTS PROJECT OVERVIEW 1 LOGIC MODEL 3 EVALUATION ACTIVITIES 4 BREAKDOWN OF TASKS: PROJECT TRACS TEAM, INTERNAL EVALUATOR, AND EXTERNAL EVALUATOR 15 TIMELINE OF EVALUATION ACTIVITIES 16 #12;1 I. PROJECT

  6. TRAC-PF1/MOD1 thermal-hydraulic predictions of JAERI Slab Core Test Facility gravity-feed tests

    SciTech Connect (OSTI)

    Gilbert, J.S.; Lin, J.C.

    1985-12-01

    The Transient Reactor Analysis Code, TRAC-PF1/MOD1, was used to analyze the Slab Core Test Facility gravity-feed tests (Runs 604, 605, 611, and 613) performed by the Japan Atomic Energy Research Institute. The objectives of the TRAC analysis are to compare the TRAC predictions with the test results and to assess the TRAC capability for simulating the core thermal-hydraulic behavior during the reflood phase of a large loss-of-coolant accident. In general, the TRAC-calculated results agree well with the data.

  7. Trch rt t ng vn phm LTAG cho ting Vit L Hng Phng1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Trích rút t ng vn phm LTAG cho ting Vit Lê Hng Phng1 , Nguyn Th Minh Huyn1 , Nguyn Phng Thái1 t ng LTAG t kho vn bn gán nhãn cú pháp (treebank). Chúng tôi trình bày kt qu trích rút mt vn phm LTAG cho ting Vit. Chng trình trích rút t ng các vn phm LTAG c lp vi ngôn ng và c phân phi di dng mã ngun m

  8. TRAC analysis of the system pressure effects tests in the Slab Core Test Facility. [PWR

    SciTech Connect (OSTI)

    Smith, S.T.

    1982-01-01

    This paper describes the analysis, using the TRAC computer code, of three system pressure effects reflood tests performed during 1981 at the Slab Core Test Facility at the Japan Atomic Energy Research Institute in Tokai, Japan. Comparisons of the calculated results with the experimental data were very good, particularly for rod temperature histories, core differential pressures, mass inventories, liquid carryover, and fluid velocities in the loops. These comparisons indicate that the TRAC code can predict reasonably well the effects of pressure variations in test conditions. This and similar calculations demonstrate that TRAC is a useful tool for the design of nuclear reactor systems and the analysis of system response during postulated accident sequences.

  9. Preliminary modeling of the TMI-2 accident with MELPROG-TRAC

    SciTech Connect (OSTI)

    Jenks, R.P.

    1988-01-01

    In support of Nuclear Regulatory Commission and Organization for Economic Cooperation and Development (OECD)-sponsored Three Mile Island-Unit 2 (TMI-2) Analysis Exercise studies, work has been performed to develop a simulation model of the TMI-2 plant for use with the integrated MELPROG-TRAC computer code. Numerous nuclear power plant simulation studies have been performed with the TRAC computer code in the past. Some of these addressed the TMI-2 accident or other hypothetical events at the TMI plant. In addition, studies have been previously performed with the MELPROG-TRAC code using Oconee-1 and Surry plant models. This paper describes the preliminary MELPROG-TRAC input model for severe accident analysis.

  10. Assessment of TRAC-BD1 amd RAMONA-3B codes fpr BWR ATWS application

    SciTech Connect (OSTI)

    Neymotin, L.; Hsu, C.J.; Saha, P.

    1984-01-01

    Based on comparisons between the TRAC-BD1 power imposed calculation and the RAMONA-3B results, it can be said that the thermal-hydraulic models of both RAMONA-3B and TRAC-BD1 provide adequate representation of an ATWS event in a BWR. However, for the reactor power calculation, RAMONA-3B with space-time neutron kinetics is a superior and preferable tool to the TRAC-BD1 with point kinetics for ATWS type events where the spatial core power distribution varies with time. Also, the computer running time for RAMONA-3B (with 115 hydraulic cells and 192 neutronic cells has been found to be about four times lower than TRAC-BD1 (with 63 hydraulic cells and point kinetics). Therefore, it is recommended that RAMONA-3B be further used for best-estimate analysis of BWR ATWS-type events.

  11. TRAC-PF1 analysis of LOFT steam-generator feedwater transient test L9-1. [PWR

    SciTech Connect (OSTI)

    Meier, J.K.

    1983-01-01

    The Transient Reactor Analysis Code (TRAC-PF1) calculations were compared to test data from Loss-of-Fluid Test (LOFT) L9-1, which was a loss-of-feedwater transient. This paper includes descriptions of the test and the TRAC input and compares the TRAC-calculated results with the test data. We conclude that the code predicted the experiment well, given the uncertainties in the boundary conditions. The analysis indicates the need to model all the flow paths and heat structures, and to improve the TRAC wall condensation heat-transfer model.

  12. Comparison of a TRAC calculation to the data from LSTF run SB-CL-05

    SciTech Connect (OSTI)

    Motley, F.; Schultz, R.

    1986-01-01

    Run SB-CL-05 is a 5% break in the side of the cold leg. The test results show that the core was uncovered briefly and that the rods overheated at certain core locations. Liquid holdup on the upflow side of the steam generator tubes was observed. When the loop seal cleared, the core refilled and the rods cooled. The TRAC results are in reasonable agreement with the test data, meaning that TRAC correctly predicted the major trends and phenomena. TRAC predicted the core uncovery, the resulting rod heatup, and the liquid holdup on the upflow side of the steam generator tubes correctly. The clearing of the loop seal allowed core recovery and cooled the overheated rods just as it had in the data, but TRAC predicted its occurrence 20 s late. The experimental and TRAC analysis results of run SB-CL-05 are similar to those for Semiscale Run S-UT-8. In both runs there was core uncovery, rod overheating, and steam generator liquid holdup. These results confirm scaling of these phenomena from Semiscale (1/1650) to LSTF (1/48).

  13. Calculation of Multipolar Exchange Interactions in Spin-Orbital Coupled Systems Shu-Ting Pi,*

    E-Print Network [OSTI]

    Savrasov, Sergej Y.

    the mean field approximation, exchange constants can be mapped into a series of total energy calculations by relating (or mapping) it to the total energy cost of the tensor flip (which is obtained by the LDA þ UCalculation of Multipolar Exchange Interactions in Spin-Orbital Coupled Systems Shu-Ting Pi

  14. DESIGN OF POWER-SPLIT HYBRID VEHICLES WITH A SINGLE PLANETARY GEAR Chiao-Ting Li

    E-Print Network [OSTI]

    Peng, Huei

    DESIGN OF POWER-SPLIT HYBRID VEHICLES WITH A SINGLE PLANETARY GEAR Chiao-Ting Li Department between gears on the planetary gearset K Final drive gear ratio on output shaft R Gear radius of the ring gear S Gear radius of the sun gear e (subscript) Engine MG (subscript) Electric machine out (subscript

  15. Quantum Mechanical Methods for Drug Design Ting Zhou, Danzhi Huang, and Amedeo Caflisch

    E-Print Network [OSTI]

    Caflisch, Amedeo

    Quantum Mechanical Methods for Drug Design Ting Zhou, Danzhi Huang, and Amedeo Caflisch Department mechanical methods in computer-aided drug design (CADD) is not just a consequence of ever growing computing.zhou@bioc.uzh.ch; Caflisch@bioc.uzh.ch Phone: +41 44 635 55 21. Fax: +41 44 635 68 62 Abstract Quantum mechanical (QM

  16. SUN Ting Curriculum Vitae 1 of 3 Room 408A, Zijing Building 15#, Tsinghua University,

    E-Print Network [OSTI]

    Bou-Zeid, Elie

    SUN Ting Curriculum Vitae 1 of 3 Room 408A, Zijing Building 15#, Tsinghua of Hydraulic Engineering, Tsinghua University, Beijing, P.R. China Publications SUN T., BOU, under review. SUN T., NI G.H. , TANG L.H. ,ZHANG S.H. , KONG G., 2012, Experimental study on green

  17. World of Warcraft Avatar History Dataset Yeng-Ting Lee12

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    World of Warcraft Avatar History Dataset Yeng-Ting Lee12 , Kuan-Ta Chen2 , Yun-Maw Cheng3 History (WoWAH) dataset, which comprises the records of 91, 065 avatars. The data includes the avatars on the Internet. In [26], it is reported that over 55% of Internet users are also online Permission to make

  18. TRAC-PD2 modeling of LOFT and PWR small cold-leg breaks

    SciTech Connect (OSTI)

    Knight, T.D.; Willcutt, G.J.E. Jr.; Lime, J.F.

    1981-01-01

    The Transient Reactor Analysis Code (TRAC) is being developed at the Los Alamos National Laboratory to provide advanced best-estimate predictions of postulated accidents in light-water reactors. TRAC-PD2, the latest publicly released version of the code, is currently being tested against small-break and other transients in experimental facilities; it is also being used to analyze postulated accidents in commercial power reactors. Calculated results for LOFT small-break experiments are compared to data, and the results from two small-break calculations for two different reactor systems are presented. It is concluded that TRAC-PD2 is useful for the analysis of cold-leg small-break accidents.

  19. Integrated TRAC/MELPROG analyses of a PWR station blackout

    SciTech Connect (OSTI)

    Henninger, R.; Dearing, J.F.

    1987-01-01

    The first complete, coupled, and largely mechanistic analysis of the entire reactor-coolant system during a station blackout (TMLB') core-meltdown accident has been made with MELPROG/TRAC. The calculation was initiated at the start of the transient and ended with a late recovery of cooling. Additional cooling provided by water from the primary system delayed events relative to a standalone MELPROG calculation. Natural circulation within the vessel was established and primary-relief-valve action did little to disturb this flow. In addition, it was calculated directly that the hot leg reached a failure temperature long before vessel failure. Beyond relocation of the core, we have calculated the boiloff of the water in the lower head and have estimated the time of vessel failure to be at about 14,700 s into the transient. For ''nominal'' corium-water heat transfer, the boiloff process (steam-production rate) is slow enough that the relief valves prevent pressurization beyond 17.5 MPa. Parametric cases with increased corium-water heat transfer resulted in steaming rates beyond the capability of the relief valves, leading to pressures in excess of 19.2 MPa. Natural convection flow around the loop, if started by removing the water in the loop seal, was blocked by a relatively less-dense hydrogen/steam mixture that flowed to the top of the steam generator. Emergency core-cooling system activation late in the transient (after core slump) resulted in rapid cooling of the periphery of the debris region but slower cooling in the interior regions because of poor water penetration.

  20. Molecular motors and membrane trac in Dictyostelium Shuo Ma, Petra Fey, Rex L. Chisholm *

    E-Print Network [OSTI]

    Chisholm, Rex L.

    Review Molecular motors and membrane tra¤c in Dictyostelium Shuo Ma, Petra Fey, Rex L. Chisholm on the cytoskeleton and their associated molecular motors. The myosin family of motors, especially the unconventional the early steps of phagocytosis. Members of the kinesin and dynein motor families, which mediate transport

  1. Assessment of a new interfacial friction correlation in TRAC-BD1/MOD1

    SciTech Connect (OSTI)

    Analytis, G.T.

    1986-01-01

    Analysis of a number of 5-bar (and one 1-bar) boiloff experiments in the electrically heated 33-rod bundle NEPTUN at the Swiss Federal Institute for Reactor Research by TRAC-BD1 version 12 and MOD1 has shown that the code consistently underpredicts the collapsed liquid level histories, hence predicting earlier critical heat fluxes and higher peak rod surface temperatures than the measurements showed. Moreover, recent work has demonstrated that these differences can be attributed to the bubbly/churn interfacial friction model in TRAC-BD1 (resulting in rather large interfacial drag) whose appropriateness for rod bundles is questionable; decreasing the interfacial drag resulted in excellent agreement between measurements and code predictions. Recent analysis of boiloff experiments with the French code CATHARE and with a bubbly/churn interfacial drag force f/sub i/ similar to the one of TRAC-BD1 has also resulted in the underprediction of collapsed liquid level histories. In this work, it was shown that the usual vapor drift velocity correlations (through which f/sub i/ is derived) for this flow regime developed for tubes are not appropriate for rod bundles. Moreover, a new f/sub i/ correlation for bubbly/churn flow in rod bundles was developed based on the Froude number. The authors have modified this correlation slightly, implemented it in TRAC-BD1/MOD1, and reanalyzed most of the boiloff experiments in NEPTUN.

  2. TRAC-PF1/MOD1 post-test calculations of the OECD LOFT Experiment LP-SB-3

    SciTech Connect (OSTI)

    Allen, E J; Neill, A P [UKAEA Atomic Energy Establishment, Winfrith (UK)

    1990-04-01

    Analysis of the small, cold leg break, OECD LOFT Experiment LP-SB-3 using the best-estimate computer code TRAC-PF1/MOD1 is presented. Descriptions of the LOFT facility and the LP-SB-3 experiment are given and development of the TRAC-PF1/MOD1 input model is detailed. The calculations performed in achieving the steady state conditions, from which the experiment was initiated, and the specification of experimental boundary conditions are outlined. Results of the TRAC-PF1/MOD1 calculation are found to be generally consistent with those reported, by members of the OECD LOFT Program Review Group, in the LP-SB-3 Comparison Report.'' Overall trends with respect to pressure histories, minimum primary system mass inventory and accumulator behaviour are reasonably well reproduced by TRAC-PF1/MOD1. 17 refs., 26 figs., 3 tabs.

  3. FRoM BIRD-BANDING, VoL. 48, No.4, PP J70-J7I Autumn 1977 Incidence of Oil Contamination on Breeding Common Terns-

    E-Print Network [OSTI]

    Duffy, David Cameron

    FRoM BIRD-BANDING, VoL. 48, No.4, PP J70-J7I Autumn 1977 Incidence of Oil Contamination on Breeding oil contamination. Since even very small amounts of oil on the plumage of incubating birds may contaminate eggs and reduce their hatchability (Hnrtung, 1965; Albers, 1977; Szaro and Albers, 1977) knowledge

  4. TRAC-PF1/MOD-1 analysis of Loss-Of-Flow Test L9-4

    SciTech Connect (OSTI)

    Meier, J.

    1985-01-01

    Los Alamos National Laboratory is developing the Transient Reactor Analysis Code (TRAC) to provide advanced best-estimate predictions of postulated accidents in pressurized water reactors (PWRs) and for many thermal-hydraulic experimental facilities. As part of our independent assessment of code version TRAC-PF1/MOD1, we analyzed Loss-of-Fluid Test (LOFT) L9-4 and compared the test data to the calculated results. This was an anticipated-transient-without-scram test in which the pumps were tripped, the steam generator main feedwater discontinued, and the main steam-outlet valve closed. This data comparison is the first extensive test of TRAC's reactor-kinetics models. The comparisons show that TRAC can calculate the power generation within a nuclear reactor if the program is supplied with adequate reactor-kinetics input specifications. The data comparisons also indicate that TRAC calculated the thermal-hydraulic parameters within LOFT well with only minor discrepancies. A number of models within TRAC-PF1/MOD1 were verified for the first time. They include the reactor-kinetics models, the trip-activated time-step controls, and the LOFT pump-coastdown calculations. In general, the final input description is adequate to analyze the experiment. The calculations indicate the importance and difficulty of obtaining accurate and applicable reactor-kinetics input data. They also indicate the need to include the effects of xenon-poisoning buildup in the analysis.

  5. TRAC-PF1 post-test predictions for the Semiscale Natural-Circulation Tests S-NC-2 and S-NC-6. [PWR

    SciTech Connect (OSTI)

    Booker, C.P.

    1983-01-01

    The TRAC prediction are compared to the data for the Semiscale natural-circular Tests S-NC-2B and S-NC-6. S-NC-2B is a baseline test covering single- and two-phase natural circulation as well as reflux; here TRAC compares quite well with the experiment results for mass flow. For Test S-NC-6, which is a reflux test with various amounts of nitrogen injected into the system, the TRAC prediction of the reflux rate is close to the experiment value with no nitrogen in the system. Ultimately, the maximum reflux rate predicted by TRAC is about 20% higher than the data.

  6. TRAC analysis of the Crystal River Unit-3 Plant transient of February 26, 1980

    SciTech Connect (OSTI)

    Coddington, P.; Willcutt, G.J.E. Jr.

    1983-01-01

    This paper describes the application of the TRAC-PD2 and TRAC-PF1 codes to analyze the Crystal River transient. The PD2 and PF1 analyses used the three-dimensional and one-dimensional vessel models, respectively. Both calculations predicted the plant depressurization caused by the open PORV and the subsequent repressurization caused by closing the PORV and continuing high-pressure injection flow. Also, natural circulation was calculated in loop B following reestablishment of feedwater to the loop-B steam generator. After system repressurization, the codes calculated that pressure was relieved through the safety valves, and an intermittent flow occurred in loop A because of high-pressure-injection-driven density variations.

  7. Assessment of TRAC-BD1/MOD1 using FIST data

    SciTech Connect (OSTI)

    Jo, J.H.; Connell, H.R.

    1985-01-01

    This report is concerned with the assessment of the TRAC-BD1/MOD1 Code, developed at Idaho National Engineering Laboratory. The assessment was conducted using data from the FIST (Full Integral Simulation Test) facility, which is a BWR safety test facility which was built to investigate small break LOCA and operational transients in BWR's and to complement earlier large break LOCA test results from TLTA (Two-Loop Test Apparatus). 21 figs.

  8. Comparison of TRAC-BF1 calculations with the LaSalle 2 instability event

    SciTech Connect (OSTI)

    Larson, J.R.

    1993-05-01

    In March of 1988 the LaSalle 2 BWR, while at about 85 percent power, was exposed to a loss of both recirculation pumps providing drive flow to the jet pumps. Within a few minutes the reactor power began to oscillate, resulting in an overpower scram. This report presents results of calculations performed with the TRAC-BF1 code to assess the capability of the code to calculate the observed behavior of the LaSalle plant during the event.

  9. Posttest analysis of MIST Test 330302 using TRAC-PF1/MOD1

    SciTech Connect (OSTI)

    Boyack, B E [Los Alamos National Lab., NM (United States)

    1992-09-01

    This report discusses a posttest analysis of Multi-Loop Integral System Test (MIST) 330302 which has been performed using TRAC-PF1/MOD1. This test was one of group performed in the MIST facility to investigate high-pressure injection (HPI)-power-operated relief valve (PORV) cooling, also known as feed-and-bleed cooling. In Test 330302, HPI cooling was delayed 20 min after opening and locking the PORV open to induce extensive system voiding. We have concluded that the TRAC-calculated results are in reasonable overall agreement with the data for Test 330302. All major trends and phenomena were correctly predicted. Differences observed between the measured and calculated results have been traced and related, in part, to deficiencies in our knowledge of the facility configuration and operation. We have identified two models forwhich additional review is appropriate. However, in general, the TRAC closure models and correlations appear to be adequate for the prediction of the phenomena expected to occur during feed-and-bleed transientsin the MIST facility. We believe that the correct conclusions about trends and phenomena will be reached if the code is used in similar applications. Conclusions reached regarding use of the code to calculate similar phenomena in full-size plants (scaling implications) and regulatory implications of this work are also presented.

  10. Diffraction-limited ultrasensitive molecular nano-arrays with singular nano-cone Yunshan Wang, Ting-Chou Chang, Paul R. Stoddart, and Hsueh-Chia Chang

    E-Print Network [OSTI]

    Chang, Hsueh-Chia

    Wang, Ting-Chou Chang, Paul R. Stoddart, and Hsueh-Chia Chang Citation: Biomicrofluidics 8, 021101-arrays with singular nano-cone scattering Yunshan Wang,1 Ting-Chou Chang,1 Paul R. Stoddart,2 and Hsueh-Chia Chang1 1

  11. FRAppE: Detecting Malicious Facebook Applications Md Sazzadur Rahman, Ting-Kai Huang, Harsha V. Madhyastha, and Michalis Faloutsos

    E-Print Network [OSTI]

    Cafarella, Michael J.

    FRAppE: Detecting Malicious Facebook Applications Md Sazzadur Rahman, Ting-Kai Huang, Harsha V for the popularity and addictiveness of Facebook. Unfortu- nately, hackers have realized the potential of using apps and campaigns. In this paper, we ask the question: given a Facebook application, can we determine

  12. TRAC-PF1 MOD1 post test calculations of the OECD LOFT Experiment LP-SB-1

    SciTech Connect (OSTI)

    Allen, E J [UKAEA Atomic Energy Establishment, Winfrith (UK)

    1990-04-01

    Analysis of the small, hot leg break, OECD LOFT Experiment LP-SB-1. using the best-estimate'' computer code TRAC-PF1/MOD1 is presented. Descriptions of the LOFT facility and the LP-SB-1 experiment are given and development of the TRAC-PF1/MOD1 input model is detailed. The calculations performed in achieving the steady state conditions, from which the experiment was initiated, and the specification of experimental boundary conditions are outlined. 24 refs., 66 figs., 12 tabs.

  13. Status and application of TRAC-BD1/MOD1 to benchmark data

    SciTech Connect (OSTI)

    Weaver, W.L. III

    1984-01-01

    The TRAC-BD1/MOD1 code can simulate a full range of operational transients and postulated accidents. It has been tested against a range of separate effects and systems test data and the agreement between the code simulation and the test data is good overall but specific areas of improvement remain. Work currently underway includes the development of a one-dimensional neutron kinetics model and a Courant limit violating numerical scheme to increase the computational speed of the code for simulation of long transients.

  14. Application of TRAC-BD1/MOD1 to a BWR/4 feedwater control failure ATWS

    SciTech Connect (OSTI)

    Rouhani, S.Z.; Giles, M.M.; Mohr, C.M. Jr.; Weaver, W.L. III

    1984-01-01

    This paper begins with a short description of the Transient Reactor Analysis Code for Boiling Water Reactors (TRAC-BWR), briefly mentioning some of its main features such as specific BWR models and input structure. Next, an input model of a BWR/4 is described, and, the assumptions used in performing an analysis of the loss of a feedwater controller without scram are listed. The important features of the calculated trends in flows, pressure, reactivity, and power are shown graphically and commented in the text. A comparison of some of the main predicted trends with the calculated results from a similar study by General Electric is also presented.

  15. Gii thiu v trng UMass Amherst l trng ni ting trong h thng i Hc Mas-

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    trng i hc vi 60% s sinh viên i hc ti các khu ký túc xá trong trng và thng thc các món n cng tin. Cng hc ca trng cng c ánh giá rt cao. Bng xp hng 5.000 chng trình tin s nm 2010 ca y Ban Nghiên Cu Quc Gia hc t thc. Tám ngành hc khác cng rt ni ting là: công ngh sinh hc ng vt, hóa k thut, hóa hc, công ngh

  16. TRAC-PF1/MOD1 pretest predictions of MIST experiments

    SciTech Connect (OSTI)

    Boyack, B.E.; Steiner, J.L.; Siebe, D.A.

    1986-01-01

    Los Alamos National Laboratory is a participant in the Integral System Test (IST) program initiated in June 1983 to provide integral system test data on specific issues and phenomena relevant to post small-break loss-of-coolant accidents (SBLOCAs) in Babcock and Wilcox plant designs. The Multi-Loop Integral System Test (MIST) facility is the largest single component in the IST program. During Fiscal Year 1986, Los Alamos performed five MIST pretest analyses. The five experiments were chosen on the basis of their potential either to approach the facility limits or to challenge the predictive capability of the TRAC-PF1/MOD1 code. Three SBLOCA tests were examined which included nominal test conditions, throttled auxiliary feedwater and asymmetric steam-generator cooldown, and reduced high-pressure-injection (HPI) capacity, respectively. Also analyzed were two ''feed-and-bleed'' cooling tests with reduced HPI and delayed HPI initiation. Results of the tests showed that the MIST facility limits would not be approached in the five tests considered. Early comparisons with preliminary test data indicate that the TRAC-PF1/MOD1 code is correctly calculating the dominant phenomena occurring in the MIST facility during the tests. Posttest analyses are planned to provide a quantitative assessment of the code's ability to predict MIST transients.

  17. Application programming interface document for the modernized Transient Reactor Analysis Code (TRAC-M)

    SciTech Connect (OSTI)

    Mahaffy, J. [Pennsylvania State Univ., University Park, PA (United States); Boyack, B.E.; Steinke, R.G. [Los Alamos National Lab., NM (United States)

    1998-05-01

    The objective of this document is to ease the task of adding new system components to the Transient Reactor Analysis Code (TRAC) or altering old ones. Sufficient information is provided to permit replacement or modification of physical models and correlations. Within TRAC, information is passed at two levels. At the upper level, information is passed by system-wide and component-specific data modules at and above the level of component subroutines. At the lower level, information is passed through a combination of module-based data structures and argument lists. This document describes the basic mechanics involved in the flow of information within the code. The discussion of interfaces in the body of this document has been kept to a general level to highlight key considerations. The appendices cover instructions for obtaining a detailed list of variables used to communicate in each subprogram, definitions and locations of key variables, and proposed improvements to intercomponent interfaces that are not available in the first level of code modernization.

  18. Analysis of a typical BWR/4 MSIV closure ATWS using RAMONA-3B and TRAC-BD1 codes

    SciTech Connect (OSTI)

    Hsu, C.J.; Neymotin, L.; Saha, P.

    1984-01-01

    Analysis of a typical BWR/4 Anticipated Transient Without Scram (ATWS) has been performed using two advanced, best-estimate computer codes, namely, RAMONA-3B and TRAC-BD1. The transient was initiated by an inadvertant closure of all Main Steam Isolation Valves (MSIVs) with subsequent failure to scram the reactor. However, all other safety features namely, the safety and relief valves, recirculation pump trip, high pressure coolant injection and the standby liquid (boron) control system were assumed to work as designed. No other operator action was assumed. It has been found that both RAMONA-3B (with three-dimensional neutron kinetics) and TRAC-BD1 (with point kinetics) yielded similar results for the global parameters such as reactor power, system pressure and the suppression pool temperature. Both calculations showed that the reactor can be brought to hot shutdown in approximately twenty to twenty-five minutes with borated water mass flow rate of 2.78 kg/s (43 gpm) with 23800 ppM of boron. The suppression pool water temperature (assuming no pool cooling) at this time could be in the range of 170 to 205/sup 0/F. An additional TRAC-BD1 calculation with RAMONA-3B reactor power indicates that the thermal-hydraulic models in RAMONA-3B, although simpler than those in TRAC-BD1, can adequately represent the system behavior during the ATWS-type transient.

  19. Comparison of TRAC-PF1/MOD1 to a no-failure UPI test in the Cylindrical Core Test Facility

    SciTech Connect (OSTI)

    Cappiello, M.; Spore, J.

    1986-01-01

    TRAC-PF1/MOD1 is compared to a no-failure upper plenum injection reflood test in the Cylindrical Core Test Facility. The results show that TRAC can accurately predict the asymmetric channeling of fluid from upper plenum into the core and that a multidimensional modeling capability is required to do so. The rod temperature behavior is accurately predicted for both the peak cladding temperature and the quench time in the high- and low-power zones. Excessive downflow of liquid at the tie plate is predicted as a result of the interfacial drag model used in TRAC. 10 figs.

  20. Updated TRAC analysis of an 80% double-ended cold-leg break for the AP600 design

    SciTech Connect (OSTI)

    Lime, J.F.; Boyack, B.E. [Los Alamos National Lab., NM (United States). Technology and Safety Assessment Div.

    1995-07-01

    An updated TRAC 80% large-break loss-of-coolant accident (LBLOCA) has been calculated for the Westinghouse AP600 advanced reactor design, The updated calculation incorporates major code error corrections, model corrections, and plant design changes. The 80% break size was calculated by Westinghouse to be the most severe large-break size for the AP600 design. The LBLOCA transient was calculated to 144 s. Peak cladding temperatures (PCTS) were well below the Appendix K limit of 1,478 K (2,200 F), but very near the cladding oxidation temperature of 1,200 K (1,700 F). Transient event times and PCT for the TRAC calculation were in reasonable agreement with those calculated by Westinghouse using their {und W}COBRA/TRAC code. However, there were significant differences in the detailed phenomena calculated by the two codes, particularly during the blowdown phase. The reasons for these differences are still being investigated. Additional break sizes and break locations need to be analyzed to confirm the most severe break postulated by Westinghouse.

  1. TRAC-PF1 analysis of loss-of-fluid test L6-7/L9-2

    SciTech Connect (OSTI)

    Meier, J.K.

    1984-01-01

    The Los Alamos National Laboratory is developing the Transient Reactor Analysis Code (TRAC-PF1) to provide the capability for advanced best-estimate predictions of postulated accidents in pressurized-water reactors (PWRs) and for many thermal-hydraulic experimental facilities. As part of an independent assessment of TRAC-PF1, Loss-of-Fluid Test (LOFT) L6-7/L9-2 is analyzed and compared to the calculated results. Test L6-7 simulated a cooldown transient similar to the Arkansas Nuclear One Unit-2 turbine-trip transient. During the L9-2 phase of the test, the primary-coolant pumps were tripped and natural circulation cooled the core while the plant cooldown continued. The TRAC results matched the test data well during the L6-7 portion of the transient (0.0-324 s). However, during the L9-2 portion the calculated natural-circulation flow rate in the intact loop was much higher than the measured rate.

  2. On-the-Fly Pipeline Parallelism I-Ting Angelina Lee* Charles E. Leiserson* Tao B. Schardl* Jim Sukha Zhunping Zhang*

    E-Print Network [OSTI]

    Leiserson, Charles E.

    On-the-Fly Pipeline Parallelism I-Ting Angelina Lee* Charles E. Leiserson* Tao B. Schardl* Jim Pipeline parallelism organizes a parallel program as a linear se- quence of s stages. Each stage processes element before the subsequent stages have nec- essarily completed their processing. Pipeline parallelism

  3. Achieving Long-Term Surveillance in VigilNet Tian He, Pascal Vicaire, Ting Yan, Qing Cao, Gang Zhou, Lin Gu,

    E-Print Network [OSTI]

    Stankovic, John A.

    Achieving Long-Term Surveillance in VigilNet Tian He, Pascal Vicaire, Ting Yan, Qing Cao, Gang Zhou-dimensional power management strategies in VigilNet, a major recent effort to support long- term surveillance using-efficient sensor systems. I. INTRODUCTION VigilNet is a recent major effort to support long-term military

  4. AP600 large-break loss-of-collant-accident developmental assessment plan for TRAC-PF1/MOD2

    SciTech Connect (OSTI)

    Knight, T.D.

    1996-07-01

    The Westinghouse AP600 reactor is an advanced pressurized water reactor with passive safety systems to protect the plant against possible accidents and transients. The design has been submitted to the U.S. NRC for design certification. The NRC has selected the Transient Reactor Analysis Code (TRAC)-PF1/MOD2 for performing large break loss-of coolant-accident (LBLOCA) analysis to support the certification effort. This document defines the tests to be used in the current phase of developmental assessment related to AP600 LBLOCA.

  5. TRAC PF1/MOD1 calculations and data comparisons for mist feed and bleed and steam generator tube rupture experiments

    SciTech Connect (OSTI)

    Siebe, D.A.; Boyack, B.E.; Steiner, J.L.

    1988-01-01

    Los Alamos National Laboratory is a participant in the Integral System Test (IST) program initiated in June 1983 for the purpose of providing integral system test data on specific issues/phenomena relevant to post-small-break loss-of-coolant accidents, loss of feedwater and other transients in Babcock and Wilcox (BandW) plant designs. The Multi-Loop Integral System Test (MIST) facility is the largest single component in the IST program. MIST is a 2 /times/ 4 (two hot legs and steam generators (SGs), four cold legs and reactor coolant pumps) representation of lowered-loop reactor system of the BandW design. It is a full-height, full-pressure facility with 1/817 power and volume scaling. Two other integral experimental facilities are included in the IST program: test loops at the University of Maryland, College Park, and at SRI International (SRI-2). The objective of the IST tests is to generate high-quality experimental data to be used for assessing thermal-hydraulic safety computer codes. Efforts are under way at Los Alamos to assess TRAC-PF1/MOD1 against data from each of the IST facilities. Calculations and data comparisons for TRAC-PF1/MOD1 assessment are presented for two transients run in the MIST facility. These are MIST Test 330302, a feed and bleed test with delayed high-pressure injection; and Test 3404AA, an SG tube-rupture test with the affected SG isolated. Only MIST assessment results are presented in this paper. The TRAC-PF1/MOD1 calculations completed to date for MIST tests are in reasonable agreement with the data from these tests. Reasonable agreement is defined as meaning that major trends are predicted correctly, although TRAC values are frequently outside the range of data uncertainty. We believe that correct conclusions will be reached if the code is used in similar applications despite minor code/model deficiencies. 7 refs., 5 figs., 2 tabs.

  6. Integrated TRAC/MELPROG analysis of core damage from a severe feedwater transient in the Oconee-1 PWR

    SciTech Connect (OSTI)

    Henninger, R.J.; Boyack, B.E.

    1986-01-01

    A postulated complete loss-of-feedwater event in the Oconee-1 pressurized water reactor has been analyzed. With an initial version of the lonked TRAC and MELPROG codes, we have modeled the loss-of-feedwater event from initiation to the time of complete disruption of the core, which was calculated to occur by 6800 s. The highest structure temperatures otuside the vessel are on the flow path from the vessel to the pressurizer relief valve. Temperatures in excess of 1200 K could result in failure and depressurization of the primary system before vessel failure.

  7. TRAC-PF1/MOD1 US/Japanese PWR conservative LOCA prediction

    SciTech Connect (OSTI)

    Gruen, G E; Fisher, J E

    1987-11-01

    This report documents the results of a 200%, double-ended, cold-leg-break, loss-of-coolant-accident (LOCA) calculation using the TRAC-PF1/MOD1 computer code. The reactor system represented a typical United States/Japanese pressurized water reactor with a 15 x 15 fuel bundle arrangement 12-ft long, four loops, and cold-leg Emergency Core Cooling (ECC) Systems. Conservation boundary and initial conditions were used. Reactor power was 102% of the 3250 MWt rated power, decay heat was set to 120% of American Nuclear Society Standard 5.1, highest core lifetime values for power peaking and fuel stored energy were used, and the LOCA occurred simultaneously with a loss of offsite power. Best estimate assumptions were used for the break flow model, fuel rod heat transfer and metal-water reaction correlations, and steady-state fuel temperature profiles. A flow blockage model, having the capability to account for the effects of cladding ballooning or rupturing, was not used. Except for these best estimate assumptions, the boundary and initial conditions were consistent with those used in licensing calculations. Maximum fuel rod temperatures were 1380 K (2020/sup 0/F) and 1040 K (1410/sup 0/F) on the hottest evaluation model rod and hottest best estimate rod, respectively. The high reported values or fuel cladding temperature were a direct consequence of the conservative boundary and initial conditions used for the calculation, primarily the 2% overpower condition, the core decay heat assumption, and the degraded ECCS. The calculation demonstrated successful core reflooding before 1478 K (2200/sup 0/F) cladding temperature was exceeded on any fuel rod. 7 refs., 47 figs., 5 tabs.

  8. TRAC code assessment using data from SCTF Core-III, a large-scale 2D/3D facility

    SciTech Connect (OSTI)

    Boyack, B.E.; Shire, P.R.; Harmony, S.C.; Rhee, G.

    1988-01-01

    Nine tests from the SCTF Core-III configuration have been analyzed using TRAC-PF1/MOD1. The objectives of these assessment activities were to obtain a better understanding of the phenomena occurring during the refill and reflood phases of a large-break loss-of-coolant accident, to determine the accuracy to which key parameters are calculated, and to identify deficiencies in key code correlations and models that provide closure for the differential equations defining thermal-hydraulic phenomena in pressurized water reactors. Overall, the agreement between calculated and measured values of peak cladding temperature is reasonable. In addition, TRAC adequately predicts many of the trends observed in both the integral effect and separate effect tests conducted in SCTF Core-III. The importance of assessment activities that consider potential contributors to discrepancies between the measured and calculated results arising from three sources are described as those related to (1) knowledge about the facility configuration and operation, (2) facility modeling for code input, and (3) deficiencies in code correlations and models. An example is provided. 8 refs., 7 figs., 2 tabs.

  9. TRAC-PF1/MOD1 independent assessment: Semiscale Mod-2A intermediate break test S-IB-3

    SciTech Connect (OSTI)

    Kmetyk, L N

    1986-02-01

    The TRAC-PF1/MOD1 independent assessment project at Sandia National Laboratories is part of an overall effort funded by the NRC to determine the ability of various system codes to predict the detailed thermal/hydraulic response of light water reactors during accident and off-normal conditions. The TRAC code is being assessed at SNLA against test data from various integral and separate effects test facilities. As part of this assessment matrix, an intermediate break test (S-IB-3), performed at the Semiscale Mod-2A facility, has been analyzed. Using an input model with a 3-D VESSEL component, the vessel and downcomer inventories during 3-IB-3 were generally well predicted, but the core heatup was underpredicted compared to data. An equivalent calculation with an all 1-D input model ran about twice as fast as our basecase analysis using a 3-D VESSEL in the input model, but the results of the two calculations diverged significantly for many parameters of interest, with the 3-D VESSEL model results in better agreement with data. 22 refs., 100 figs.

  10. Uncertainties in modelling and scaling of critical flows and pump model in TRAC-PF1/MOD1

    SciTech Connect (OSTI)

    Rohatgi, U.S.; Yu, Wen-Shi

    1987-01-01

    The USNRC has established a Code Scalability, Applicability and Uncertainty (CSAU) evaluation methodology to quantify the uncertainty in the prediction of safety parameters by the best estimate codes. These codes can then be applied to evaluate the Emergency Core Cooling System (ECCS). The TRAC-PF1/MOD1 version was selected as the first code to undergo the CSAU analysis for LBLOCA applications. It was established through this methodology that break flow and pump models are among the top ranked models in the code affecting the peak clad temperature (PCT) prediction for LBLOCA. The break flow model bias or discrepancy and the uncertainty were determined by modelling the test section near the break for 12 Marviken tests. It was observed that the TRAC-PF1/MOD1 code consistently underpredicts the break flow rate and that the prediction improved with increasing pipe length (larger L/D). This is true for both subcooled and two-phase critical flows. A pump model was developed from Westinghouse (1/3 scale) data. The data represent the largest available test pump relevant to Westinghouse PWRs. It was then shown through the analysis of CE and CREARE pump data that larger pumps degrade less and also that pumps degrade less at higher pressures. Since the model developed here is based on the 1/3 scale pump and on low pressure data, it is conservative and will overpredict the degradation when applied to PWRs.

  11. Contact Undergraduate Admissions Office | Tel +44 (0)117 928 8154 Email socsci-ug-admissions@bristol.ac.uk 54 ACCOUnTing And FinAnCE

    E-Print Network [OSTI]

    Subramanian, Sriram

    -ug-admissions@bristol.ac.uk 54 ACCOUnTing And FinAnCE FACULTY oF soCiAL sCienCes And LAw bristol.ac.uk Accounting and Finance As one of the UK's leading departments for Accounting and Finance, we offer you the opportunity to study and their application skills. bristol.ac.uk/accounting Why study Accounting and Finance at Bristol? Bristol has

  12. A web-based tool for you to monitor nutrition consumption Au-Yeung Yat Hung, Chu Yan Ting Mandy, Lau Chung Yan Johanna

    E-Print Network [OSTI]

    Liu, Yunhao

    Ting Mandy, Lau Chung Yan Johanna Advised by Prof. Albert C.S. CHUNG #12;Introduction Hong Kong's new Browser Segmentation extracting lines 0 500 1000 1500 0 500 1000 Vertical Histogram 0 500 1000 1500 -1000 templates Template: 0 100 200 300 400 500 600 0 50 100 50 100 150 200 250 300 350 400 450 500 550 0 0.5 1 50

  13. Assessment of TRAC-PF1/MOD1 against a loss-of-grid transient in Ringhals 4 power plant

    SciTech Connect (OSTI)

    Sjoberg, A; Almberger, J; Sandervag, O

    1989-07-01

    A loss of grid transient in a three loop Westinghouse PWR has been simulated with the frozen version of TRAC-PF1/MOD1 computer code. The results reveal the capability of the code to qualitatively predict the different pertinent phenomena and the data comparison was quite encouraging. Accurate predictions of the system response required careful determination of the boundary conditions simulating the turbine governor valves and steam dump valves behaviour. An explicit modeling of the steam generator internals was also found to be important for the results. It was also revealed that the pressurizer system including spray and heaters and their operation should be modeled in some detail for proper response. 4 refs., 18 figs.

  14. Their share: diversity and disparity in IP tra#c Andre Broido 1 , Young Hyun 1 , Ruomei Gao 2 , and kc cla#y 1

    E-Print Network [OSTI]

    California at San Diego, University of

    , prefixes, policy atoms and ASes, similar to the oft­quoted 80/20 split (e.g., 80% of vol­ ume in 20 models for size dis­ tributions such as Pareto/Zipf. We find that AS tra#c volumes (by byte) are top­heavy and can only be approximated by Pareto with # = 0.5, and that empirical distributions are often close

  15. Simulation of LOFT anticipated-transient experiments L6-1, L6-2, and L6-3 using TRAC-PF1/MOD1

    SciTech Connect (OSTI)

    Sahota, M.S.

    1984-01-01

    Anticipated-transient experiments L6-1, L6-2, and L6-3, performed at the Loss-of-fluid Test (LOFT) facility, are analyzed using the latest released version of the Transient Reactor Analysis Code (TRAC-PF1/MOD1). The results are used to assess TRAC-PF1/MOD1 trip and control capabilities, and predictions of thermal-hydraulic phenomena during slow transients. Test L6-1 simulated a loss-of-stream load in a large pressurized-water reactor (PWR), and was initiated by closing the main steam-flow control valve (MSFCV) at its maximum rate, which reduced the heat removal from the secondary-coolant system and increased the primary-coolant system pressure that initiated a reactor scram. Test L6-2 simulated a loss-of-primary coolant flow in a large PWR, and was initiated by tripping the power to the primary-coolant pumps (PCPs) allowing the pumps to coast down. The reduced primary-coolant flow caused a reactor scram. Test L6-3 simulated an excessive-load increase incident in a large PWR, and was initiated by opening the MSFCV at its maximum rate, which increased the heat removal from the secondary-coolant system and decreased the primary-coolant system pressure that initiated a reactor scram. The TRAC calculations accurately predict most test events. The test data and the calculated results for most parameters of interest also agree well.

  16. TRAC analysis of the effect of increased ECC subcooling on the reflood transient in the Slab Core Test Facility. [PWR

    SciTech Connect (OSTI)

    Smith, S.T.

    1982-01-01

    A blind posttest calculation of Slab Core Test Facility (SCTF) Run 510, the high-subcooling test, was completed with TRAC-PD2/MOD1 using initial conditions provided by the Japan Atomic Energy Research Institute (JAERI), but without knowledge of the actual test results. There is good comparison between the calculation and the data for rod temperatures, turnaround times, core differential pressures, and mass inventories, and reasonable comparison for absolute pressures, upper plenum pool formation, and fluid temperatures and mass accumulation in the steam-water separator. Comparison of this calculation with the calculation of the base case test (Run 507) shows that the qualitative behavior during reflood is calculated correctly for both cases. In addition, from this comparison the following conclusions can be drawn: for the high-subcooling case, the peak rod temperture was lower, calculated quench times were earlier, there was more entrainment and liquid carryover from the core to the upper plenum, and the liquid mass accumulation in both the core and the upper plenum was greater.

  17. Analysis of a 4-inch small-break loss-of-coolant accident in a Westinghouse Pressurized Water Reactor using TRAC-PF1/MOD1 

    E-Print Network [OSTI]

    Knippel, Kimberley I.R.

    1988-01-01

    4-inch SBLOCAs 65 XI. Comparison of RESAR-3S, TRAC and RELAP SBLOCAs . . 70 LIST OF ACRONYMS Acronym Name CCFL CVCS ECCS EPRI FSAR HPI INEL LB LOCA LOCA LPI MSIV NRC PCT PORV PWR RCP RCS RESAR RHR SI SBLOCA Argonne National... and RELAP57 a) it was decided to model the 4- loop RCS with a 2-loop input model. The three coolant loops that did not have the pressurizer or the pipe break were lumped together to form one equivalent intact loop. The coolant loop that contained...

  18. Undergraduate s tudent res earch as s is tant Kathleen Huynh is culturing hum an cancer cells and tes ting them for s ens itivity to com pounds des igned by New

    E-Print Network [OSTI]

    Borchers, Brian

    and tes ting them for s ens itivity to com pounds des igned by New Mexico Tech's Chem ical Biology . Overall, the university wants to create a "culture of entrepreneurship" on campus, said New Mexico Tech Center Inc. New Mexico Tech, however, has lagged behind in building a tech-transfer program

  19. 4/5/2014 Scientists build tinywindmills to power mobile phones -Tech2 http://tech.firstpost.com/news-analysis/scientists-build-ting-windmills-power-mobile-phones-208443.html 1/4

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    4/5/2014 Scientists build tinywindmills to power mobile phones - Tech2 http://tech.firstpost.com/news-analysis/scientists-build-ting-windmills this website NEWS & ANALYSIS REVIEWS MOBILES LAPTOPS COMPARE TECH GURU Scientists build tiny windmills to power mobile phones Micro-windmills to power your mobile devices By NainaKhedekar / 13 Jan 2014 , 17:26 A team

  20. An evaluation of TRAC-PF1/MOD1 computer code performance during posttest simulations of Semiscale MOD-2C feedwater line break transients

    SciTech Connect (OSTI)

    Hall, D.G.: Watkins, J.C.

    1987-01-01

    This report documents an evaluation of the TRAC-PF1/MOD1 reactor safety analysis computer code during computer simulations of feedwater line break transients. The experimental data base for the evaluation included the results of three bottom feedwater line break tests performed in the Semiscale Mod-2C test facility. The tests modeled 14.3% (S-FS-7), 50% (S-FS-11), and 100% (S-FS-6B) breaks. The test facility and the TRAC-PF1/MOD1 model used in the calculations are described. Evaluations of the accuracy of the calculations are presented in the form of comparisons of measured and calculated histories of selected parameters associated with the primary and secondary systems. In addition to evaluating the accuracy of the code calculations, the computational performance of the code during the simulations was assessed. A conclusion was reached that the code is capable of making feedwater line break transient calculations efficiently, but there is room for significant improvements in the simulations that were performed. Recommendations are made for follow-on investigations to determine how to improve future feedwater line break calculations and for code improvements to make the code easier to use.

  1. TRAC-PF1/MOD1: an advanced best-estimate computer program for pressurized water reactor thermal-hydraulic analysis

    SciTech Connect (OSTI)

    Liles, D.R.; Mahaffy, J.H.

    1986-07-01

    The Los Alamos National Laboratory is developing the Transient Reactor Analysis Code (TRAC) to provide advanced best-estimate predictions of postulated accidents in light-water reactors. The TRAC-PF1/MOD1 program provides this capability for pressurized water reactors and for many thermal-hydraulic test facilities. The code features either a one- or a three-dimensional treatment of the pressure vessel and its associated internals, a two-fluid nonequilibrium hydrodynamics model with a noncondensable gas field and solute tracking, flow-regime-dependent constitutive equation treatment, optional reflood tracking capability for bottom-flood and falling-film quench fronts, and consistent treatment of entire accident sequences including the generation of consistent initial conditions. The stability-enhancing two-step (SETS) numerical algorithm is used in the one-dimensional hydrodynamics and permits this portion of the fluid dynamics to violate the material Courant condition. This technique permits large time steps and, hence, reduced running time for slow transients.

  2. TRAC-PF1/MOD2 best-estimate analysis of a large-break LOCA in a 15 times 15 generic four-loop Westinghouse nuclear power plant

    SciTech Connect (OSTI)

    Spore, J.W.; Lin, J.C.; Schnurr, N.M.; White, J.R.; Cappiello, M.C.

    1992-01-01

    Calculations of a large-break loss-of-coolant accident (LOCA) in a 15 {times} 15 generic four-loop Westinghouse nuclear power plant with both the TRAC-PF1/MOD1 and TRAC-PF1/MOD2 computer codes will be presented. The Transient Reactor Analysis Code (TRAC) has been developed by Los Alamos National Laboratory to provide advanced best-estimate simulations of real postulated transients in pressurized light-water reactors (LWRs) and for many related thermal-hydraulic facilities. The latest released version of TRAC is TRAC-PF1/MOD2. Significant improvements and enhancements over the MOD1 version were implemented in the MOD2 heat-transfer and constitutive models. One of the most significant improvements in the MOD2 code has been the implementation of the two-step numerics method in the three-dimensional components, which can significantly reduce run times for long, slow transients. A very important area of improvement has been in the reflood heat-transfer models. Developmental assessment results (i.e., code comparisons with experimental data) will be discussed for several separate-effects and integral test, including analysis of the Upper Plenum Test Facility (UPTF), the Cylindrical Core Test Facility (CCTF), and the Loss-of-Fluid Test Facility (LOFT). The assessment results provide information on the anticipated accuracy for the best-estimate models in the MOD2 computer code. The MOD1 to MOD2 comparison will provide an estimate for the effect of improved heat-transfer models on predicted peak cladding temperatures.

  3. TRAC-PF1/MOD2 best-estimate analysis of a large-break LOCA in a 15 {times} 15 generic four-loop Westinghouse nuclear power plant

    SciTech Connect (OSTI)

    Spore, J.W.; Lin, J.C.; Schnurr, N.M.; White, J.R.; Cappiello, M.C.

    1992-03-01

    Calculations of a large-break loss-of-coolant accident (LOCA) in a 15 {times} 15 generic four-loop Westinghouse nuclear power plant with both the TRAC-PF1/MOD1 and TRAC-PF1/MOD2 computer codes will be presented. The Transient Reactor Analysis Code (TRAC) has been developed by Los Alamos National Laboratory to provide advanced best-estimate simulations of real postulated transients in pressurized light-water reactors (LWRs) and for many related thermal-hydraulic facilities. The latest released version of TRAC is TRAC-PF1/MOD2. Significant improvements and enhancements over the MOD1 version were implemented in the MOD2 heat-transfer and constitutive models. One of the most significant improvements in the MOD2 code has been the implementation of the two-step numerics method in the three-dimensional components, which can significantly reduce run times for long, slow transients. A very important area of improvement has been in the reflood heat-transfer models. Developmental assessment results (i.e., code comparisons with experimental data) will be discussed for several separate-effects and integral test, including analysis of the Upper Plenum Test Facility (UPTF), the Cylindrical Core Test Facility (CCTF), and the Loss-of-Fluid Test Facility (LOFT). The assessment results provide information on the anticipated accuracy for the best-estimate models in the MOD2 computer code. The MOD1 to MOD2 comparison will provide an estimate for the effect of improved heat-transfer models on predicted peak cladding temperatures.

  4. TRAC-PF1/MOD1 analysis of a 200% cold-leg break in a US/Japanese PWR with four loops and 15 x 15 fuel

    SciTech Connect (OSTI)

    Spore, J.W.; Cappiello, M.W.

    1986-01-01

    This report presents the results of a TRAC-PF1/MOD1 calculation that simulated a 200% double-ended cold-leg-break loss-of-coolant accident in a generic US/Japanese pressurized water reactor. This is a best-estimate analysis using conservative boundary conditions and minimum safeguards. The calculation shows that the peak cladding temperature (PCT) occurs during blowdown and that the core reheat is minimal during reflood. The results also show that for an evaluation-model peak rod linear power of 15.85 kW/ft, a PCT of 1084 K is reached at 3.5 s into the blowdown transient, which is approx.394 K below the design basis limit of 1478 K. 10 figs.

  5. ARM - Campaign Instrument - trac

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments? We would love to hear from you! Send us a notegovInstrumentstdma Comments? WegovInstrumentstrac

  6. TRAC-PF1/MOD1 calculations and data comparisons for MIST (Multi-Loop Integral System Test) small-break loss-of-coolant accidents with scaled 10 cm/sup 2/ and 50 cm/sup 2/ breaks

    SciTech Connect (OSTI)

    Steiner, J.L.; Siebe, D.A.; Boyack, B.E.

    1987-01-01

    Los Alamos National Laboratory is a participant in the Integral System Test (IST) program initiated in June 1983 for the purpose of providing integral system test data on specific issues/phenomena relevant to post-small-break loss-of-coolant accidents (SBLOCAs), loss of feedwater and other transients in Babcock and Wilcox (B and W) plant designs. The Multi-Loop Integral System Test (MIST) facility is the largest single component in the IST program. MIST is a 2 x 4 (2 hot legs and steam generators, 4 cold legs and reactor-coolant pumps) representation of lowered-loop reactor systems of the B and W design. It is a full-height, full-pressure facility with 1/817 power and volume scaling. Two other experimental facilities are included in the IST program: test loops at the University of Maryland, College Park, and at Stanford Research Institute. The objective of the IST tests is to generate high-quality experimental data to be used for assessing thermal-hydraulic safety computer codes. Efforts are underway at Los Alamos to assess TRAC-PF1/MOD1 against data from each of the IST facilities. Calculations and data comparisons for TRAC-PF1/MOD1 assessment have been completed for two transients run in the MIST facility. These are the MIST nominal test. Test 3109AA, a scaled 10 cm/sup 2/ SBLOCA and Test 320201, a scaled 50 cm/sup 2/ SBLOCA. Only MIST assessment results are presented in this paper.

  7. SU-E-T-300: Spatial Variations of Multiple Off-Axial Targets for a Single Isocenter SRS Treatment Plan in ExacTrac 6D Robotic Couch System

    SciTech Connect (OSTI)

    Kim, S [Genesis Medical Center, Davenport, IA (United States); Tseng, T [Mount Sinai Hospital, NY, NY (United States)

    2014-06-01

    Purpose: To evaluate the spatial variations of multiple off-axial targets for a single isocenter stereotactic radiosurgery (SRS) treatment plan in ExacTrac 6D robotic couch system (BrainLab AG). Methods: Five metallic ball bearing (BB) markers were placed sparsely in 3D off-axial locations (non-coplanar) inside a skull phantom as the representatives of multiple targets mimicking multiple brain metastases. The locations of the BB markers were carefully chosen to minimize overlapping of each other in a port imaging detector plane. The skull phantom was immobilized by a frameless mask and CT scanned with a BrainLab Head and Neck Localizer using a GE Optima MDCT scanner. The CT images were exported to iPlan software (BrainLab AG) and a multiple target PTV was drawn by combining all the contours of the BBs. The margin of the MLC opening was selected as 3 mm expansion outward. Two coplanar arc beams were placed to generate a single isocenter SRS plan to treat the PTV. The arc beams were delivered using Novalis Tx system with portal imaging acquisition mode per 10% temporal resolution. The locations of the BBs were visualized and analyzed with respect to the MLC aperture in the treatment plan similar to the Winston-Lutz test. Results: All the BBs were clearly identified inside the MLC openings. The positional errors for the BBs were overall less than 1 mm along the rotational path of the two arcs. Conclusion: This study verified that the spatial deviations of multiple off-axial targets for a single isocenter SRS treatment plan is within sub-millimeter range in ExacTrac 6D robotic couch system. Accompanied with the Winston-Lutz test, this test will quality-assure the spatial accuracies of the isocenter as well as the positions of multiple off-axial targets for the SRS treatment using a single isocenter multiple target treatment plan.

  8. Building Air Quality Alliance Program fro Building Management 

    E-Print Network [OSTI]

    Kettler, G. J.

    1998-01-01

    IAQ increases. EPA studies rank indoor air pollution among the top five risks of environmental threats to public health. Guidance on achieving acceptable air quality and on preventing indoor air pollution is available. The 199 1 EPAMIOSH guide...

  9. METALS~~~SINTEG~~~~TING~COMPANY, INC.

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony V. Andolina:I.)p'

  10. Torchestra : reducing interactive trac delays over Tor

    E-Print Network [OSTI]

    Gopal, Deepika

    2012-01-01

    and Paul Syverson. Tor: The Second- Generation Onion Router.Hovav Shacham, Chair Tor is an onion routing network thatTor Architecture Tor stands for “The Onion Router” and is a

  11. Fast TracKing Why and How

    E-Print Network [OSTI]

    , z. Good pT resolution; `cheap' to refit. [GeV] T p 0 10 20 30 40 50 60 70 80 90 Efficiencyw.r.t.Offline 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 muon pion Simulation, no IBLATLAS -2 -1 0Efficiencyw.r.t.Offline 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 muon pion EfficiencyWRTOffline Resolution at 10 GeV p

  12. Fast TracKing Why and How

    E-Print Network [OSTI]

    ' to refit. [GeV] T p 0 10 20 30 40 50 60 70 80 90 Efficiencyw.r.t.Offline 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 muon pion Simulation, no IBLATLAS -2 -1 0Efficiencyw.r.t.Offline 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 muon pion EfficiencyWRTOffline Resolution at 10 GeV pT 0.5 GeV 0.0015 0.001 d

  13. Junbin HUANG1 , Ting-Fang HSIEH2

    E-Print Network [OSTI]

    Hsiang, Tom

    were frequent, demonstrating the importance of asexual spread of this pathogen. However, when only), bacteria (Souza et al. 1992, Maynard Smith et al. 1993), and other microorganisms (Tibayrenc & Ayala 1999

  14. Title: Inverse Electromagnetic Problems Name: Gunther Uhlmann, Ting Zhou

    E-Print Network [OSTI]

    Uhlmann, Gunther

    measurements at the bound- ary of the medium. Calder´on was motivated by oil prospection. In the 40's he worked as an engineer for Yacimientos Petrol´iferos Fiscales (YPF), the state oil company of Argentina, and he thought of electrical methods in geophysics see [48]. EIT also arises in medical imaging given that human organs

  15. Primate molecular phylogenetics in a genomic era Nelson Ting

    E-Print Network [OSTI]

    Ting, Nelson

    anniversary of his seminal papers, to assess the field of primate molecular phylog- enetics in the age

  16. Engineering artificial cell membranes by Ting F. Zhu.

    E-Print Network [OSTI]

    Zhu, Ting F. (Ting Fredrick)

    2010-01-01

    Growth and division are essential biological processes of cellular life. A crucial question concerning the origin of cellular life is how primitive cells (protocells) lacking complex biological machinery could grow and ...

  17. Employment Report Message FroM the Director | www.tuck.dartmouth.edu/careers

    E-Print Network [OSTI]

    Do, Mathias worked with the volkswagen group, siemens, Booz & co. (now strategy&), and tomtom. he specialized

  18. Robot Trac School : improving autonomous navigation in EOD robots

    E-Print Network [OSTI]

    Denewiler, Thomas

    2011-01-01

    3.5.2 Simulating Robot Runs . . . . . . . . . . . . . . .4.2.2 Unicycle-like Robot Kinematics . . . . . . . 4.2.3Figure Figure Figure Figure Figure Figure Figure Robot Test

  19. BridgeGreen : bridging the disconnect between design professionals and resources fro environmentally, socially, and economically responsive architecture

    E-Print Network [OSTI]

    Elbaum, Meredith Sue, 1975-

    2003-01-01

    Sustainable design, whether referred to as green, high performing, responsible, or environmentally, socially, and economically responsive architecture, is influencing the global building industry. Most major firms of ...

  20. A Roadmap For Comprehensive Online Privacy Policy Annie I. Antn (*), Elisa Bertino (**), Ninghui Li (**), Ting Yu

    E-Print Network [OSTI]

    Yu, Ting

    framework that covers the entire privacy policy life-cycle is needed. This life-cycle includes enterprise that supports the privacy policy life-cycle. We identify the relevant technological and non-technical components required to support this life-cycle, showing the relationships between these components. The framework

  1. A first-principles study on the behavior of HCl inside SWCNT Ting Liang a

    E-Print Network [OSTI]

    Li, Weixue

    , including nanoelectronic devices, energy storage, chemical probes and biosensors, field emission display in the design of new nanomaterials [5­7]. Boron- and phosphorous-doped silicon nanowires were used as building

  2. Skip N-gram Modeling for Near-Synonym Choice Shih-Ting Chen

    E-Print Network [OSTI]

    ( ) ( ) ( ) (1 ) ( ) ( ) ( ) ( ) i i i n i i i i i n n i n i i n i i i i n n i n P s P w w C w M w P w w C w M w D D (1) 1 1( )i i nM w 5 1 1 1 1 1( ) ( ) ( ) i i i i i n i n i n w M w C w C w ¦ (2) C( ) N Web 1T 5-gram N N N N N N ( ) (Skip N-gram) 5 N Web 1T 5-gram N N Skip4 Skip

  3. Wavelet-based multispectral face recognition LIU Dian-ting1

    E-Print Network [OSTI]

    Shyu, Mei-Ling

    1. CAD, CG & Network Laboratory, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China; 2. School of Electronic and Information Engineering, Dalian University of Technology, Dalian 116024, China; 3. Department of Labor Security, Xiangying Town Government, Dalian 116111

  4. TesTing for space Satellite components must be able to survive

    E-Print Network [OSTI]

    not rush in. Scientists and engineers must also make sure they do not pollute the air, to do CONTACT RAL very low levels of contaminants and pollutants, with a controlled humidity and temperature. Filters keep the air dust free and a positive pressure ensures that if a door is opened, contaminated air does

  5. L thnh vin ca Tp on Russell danh ting, Trng i hc Cardiff rt c

    E-Print Network [OSTI]

    Davies, Christopher

    t phng pháp ging dy, hng nghiên cu cng nh tn dng các c s vt cht tuyt vi ca trng. Thành ph Cardiff là mt hát và vin bo tàng, cng nh thng xuyên ng cai các s kin th thao ln, các chuyn lu din hoà nhc sân vn ng Khoa hc Sc kho và i sng. Sinh viên cng có th ng ký các khoá hc khác ti i hc Cardiff và s nhn c t vn và

  6. Electrochemically Functionalized Single-Walled Carbon Nanotube Ting Zhang,a

    E-Print Network [OSTI]

    with covalently attached poly-(m-aminobenzene sulfonic acid) (PABS) have shown significantly improved performance of nanotube-bound carboxylic acids with the amine-rich PABS [7]. Pd decorated SWNTs created by electron

  7. Ting Xu | Center for Gas SeparationsRelevant to Clean Energy Technologies |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDidDevelopment TopMetathesisSediments andTheTime-ResolvedBlandine

  8. Samuel C. Ting, 1975 | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thI D-NicholasReports andRobert N. Thorn,SCPDSagenap

  9. Samuel C.C. Ting, the J/psi Particle (Charm), and the Alpha Magnetic

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) byMultidayAlumni >Scientific and TechnicalSpectrometer (AMS)

  10. Development of a Fast Time-Resolved Aerosol Collector (Fast TRAC)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalent BondingMeeting |DesignCommunitiesYu & James Cowin PNNL Fast

  11. Development of a Fast Time-Resolved Aerosol Collector (Fast TRAC)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalent BondingMeeting |DesignCommunitiesYu & James Cowin PNNL FastYu,

  12. Nash Equilibria in Competitive Societies, with Applications to Facility Location, Trac Routing and Auctions

    E-Print Network [OSTI]

    Vetta, Adrian

    Nash Equilibria in Competitive Societies, with Applications to Facility Location, TraÃ?c Routing, guarantees on the social performance of Nash equilibria. For submodular utility functions, any Nash-dependent additive term. For non-decreasing, submodular utility functions, any Nash equilibrium gives an expected

  13. i i N J I T M A G A Z I N E | F A L L 2 0 0 9 a Message froM

    E-Print Network [OSTI]

    Haimovich, Alexander

    could include the "planting" of wind turbines and solar panels on a fiscally sound, revenue- producing of the 21st century ­ marshalling the resources needed to implement a sustainable, energy-efficient future have a broad and beneficial impact on our environment and energy infrastructure. During the 1930s

  14. 23International Journal of Metalcasting/Spring 2012 MeasureMent of Gas evolution froM PunB Bonded sand

    E-Print Network [OSTI]

    Beckermann, Christoph

    of castings.2-4 Defects associated with binder gas generation from bonded sand molds and cores, with blowholes introduction Resin binders used to make sand molds and cores thermally decompose when subjected to the high into metalcasting simulation software in order to better predict the occurrence of gas defects.10-12 Crucial ele

  15. Use and productivity of resources in the corn producing area of Argentina 

    E-Print Network [OSTI]

    Andruchowicz, Eugenio Waldemar

    1970-01-01

    throe different sj. ze f a! . . ", , cross i!. ! o~. e fro. ! c!'ops a!!d livestock are, siren i&n Table 6. is . 'i&&ht be ex;, ected r ro!a t le nigher ?errant=. &&e of I&!!'! ! evoted to clons bv thc . &, ~. aller siz? fai"-. . s (Table 2), p" re... i "ed =t a less . !nte! siv" r'te ?1?en;. a!lid be pl'oi'iteole. 6'nc of the f ecto s ?0. !trib!?ting ?0 the low raCe of i. l?ens ity of 1-". -. d ! . e " i?err s to bc ti". e extre sely hieih & osi; of the:-. , Ost ?0, -'er? tech !010? i eel...

  16. Prediction of protein function using protein-protein interaction data Minghua Deng, Kui Zhang, Shipra Mehta, Ting Chen

    E-Print Network [OSTI]

    Chen, Ting

    prediction based on protein interaction data. The supplementary data is available at httpPrediction of protein function using protein-protein interaction data Minghua Deng, Kui Zhang of Biological Sciences University of Southern California 1042 West 36th Place Los Angeles, CA 90089-1113 Tel

  17. A Limited Set of Muscle Synergies for Force Control During a Postural Task Lena H. Ting and Jane M. Macpherson

    E-Print Network [OSTI]

    by a similar reduction in degrees of freedom at the biomechanical level. Electromyographic data were recorded

  18. HOPSPACK

    Energy Science and Technology Software Center (OSTI)

    002439WKSTN00 Hybrid Optimization Parallel Search PACKage  https://software.sandia.dov/trac/hopspack 

  19. Proceedings of the 19th Central Hardwood Forest Conference GTR-NRS-P-142 271 CoMPARISoNS oF SeDIMeNT LoSSeS FRoM A NewLy

    E-Print Network [OSTI]

    concerns about the social, economic, and environmental effects of drilling and hydraulic fracturing have the new wells, pipeline construction has simultaneously been expanding. For example, 1,854 km of pipeline extensive impacts than those associated with drill pad development; however, there has been little research

  20. Sensor Networks for Everyday Use: The BL-Live Experience Seng-Yong Lau, Ting-Hao Chang, Shu-Yu Hu, Hsing-Jung Huang,

    E-Print Network [OSTI]

    Huang, Polly

    building by a 30+ node sensor network. Two everyday services, Elevator Report and Smart Office communication, and energy efficiency. Many of the lessons we learn are not only surprising but also inspiring. Is the deployment of sensor networks too difficult or practically impossible? Motivated to address this question, we

  1. Metal MEMS Tools for Beating-heart Tissue Removal Andrew H. Gosline, Member, IEEE, Nikolay V. Vasilyev, Arun Veeramani, MingTing Wu, Greg Schmitz,

    E-Print Network [OSTI]

    Dupont, Pierre

    Metal MEMS Tools for Beating-heart Tissue Removal Andrew H. Gosline, Member, IEEE, Nikolay V. del Nido and Pierre E. Dupont, Fellow, IEEE Abstract-- A novel robotic tool is proposed to enable the surgical removal of tissue from inside the beating heart. The tool is manufactured using a unique metal

  2. 101:3294-3309, 2009. First published Apr 8, 2009; doi:10.1152/jn.90775.2008J Neurophysiol Torrence D. J. Welch and Lena H. Ting

    E-Print Network [OSTI]

    total displace- ment. Electromyographic (EMG) recordings from several muscles of the lower limbs- surface perturbations using descriptive measures, such as mean electromyographic (EMG) activity during

  3. i hc ng cp th gii i hc Binghamton, i hc Tiu bang New York, to dng c danh ting ca

    E-Print Network [OSTI]

    Zhang, Zhongfei "Mark"

    nht ti New York và ng th 18 trong c nc. Mt s lý do gm kh nng duy trì s lng sinh viên, t l tt nghip cho các sinh viên i hc c hng nn giáo dc cht lng cao vi chi phí phi chng. i hc Binghamton mang n cho tip cng nh lý lun nh tính và nh lng. H cng có c hi tin hành nghiên cu, làm vic trên c s cng tác và

  4. Palladium Nanoparticles Decorated Single-Walled Carbon Nanotube Hydrogen Sensor Syed Mubeen, Ting Zhang, Bongyoung Yoo, Marc A. Deshusses,* and Nosang V. Myung*

    E-Print Network [OSTI]

    and xenon production, rocket fuels for spacecraft, fuel cells, semi- conductor processing potential, and initial baseline resistance of the SWNT network), the sensing performance was optimized. The optimized sensor showed excellent sensing properties toward hydrogen (R/R of 0.42%/ppm) with a lower

  5. Flow performance of ground biomass in a commercial auger Zewei Miao, Tony E. Grift , Alan C. Hansen, K.C. Ting

    E-Print Network [OSTI]

    , gasification and combustion require a form of biomass that is flowable, to enable handling using provenFlow performance of ground biomass in a commercial auger Zewei Miao, Tony E. Grift , Alan C. Hansen friction The flow performance of preprocessed biomass plays an important role in biomass transportation

  6. A MAP Fitting Method to Approximate Real Trac Behavior Andr as Horv ath [1] , Gerg}o Istv an R ozsa [2] , Mikl os Telek [2

    E-Print Network [OSTI]

    Telek, Miklós

    is the superposition of two elementary processes. A Phase type renewal process, whose interarrival time exhibits heavy techniques are used to evaluate the goodness of the proposed #12;tting method. Keywords: TraÃ?c source models studies may be found in [14]). It is commonly assumed that Markovian models are not appropriate to capture

  7. TRAC analyses for CCTF and SCTF tests and UPTF design/operation. [Cylindrical Core Test Facility; Slab Core Test Facility; Upper Plenum Test Facility

    SciTech Connect (OSTI)

    Spore, J.W.; Cappiello, M.W.; Dotson, P.J.; Gilbert, J.S; Martinez, V.; Stumpf, H.J.

    1985-01-01

    The analytical support in 1985 for Cylindrical Core Test Facility (CCTF), Slab Core Test Facility (SCTF), and Upper Plenum Test Facility (UPTF) tests involves the posttest analysis of 16 tests that have already been run in the CCTF and the SCTF and the pretest analysis of 3 tests to be performed in the UPTF. Posttest analysis is used to provide insight into the detailed thermal-hydraulic phenomena occurring during the refill and reflood tests performed in CCTF and SCTF. Pretest analysis is used to ensure that the test facility is operated in a manner consistent with the expected behavior of an operating full-scale plant during an accident. To obtain expected behavior of a plant during an accident, two plant loss-of-coolant-accident (LOCA) calculations were performed: a 200% cold-leg-break LOCA calculation for a 2772 MW(t) Babcock and Wilcox plant and a 200% cold-leg-break LOCA calculation for a 3315 MW(t) Westinghouse plant. Detailed results are presented for several CCTF UPI tests and the Westinghouse plant analysis.

  8. Analysis of small-break LOCA transients combined with complete loss-of-feedwater accidents for the South Texas Project plant using TRAC-PF1/MOD1 

    E-Print Network [OSTI]

    Guyot, Carole Chantal

    1987-01-01

    with two-step numerics in the one-dimensional components. The two-fluid model, in conjunction with a stratified flow regime handles countercurrent flow better than the drift-flux model previously used. The two-step numerics allow large time... the combined transients. 33. Void fraction of the fluid flowing through the break during the one-inch small-break LOCA combined with LOFW 69 71 34. Void fraction in the vessel upper head during the one-inch small-break IDCA combined with IDFW. . . . 72...

  9. Trac en 3D de la fonction sin(r)/r avec la fonction "mesh". Ici x et y sont dans l'intervale [-10,10].

    E-Print Network [OSTI]

    Hoepffner, Jérôme

    (ind),y(ind),z(ind),'ro') hold off box on grid on xlabel('x') ylabel('y') zlabel('z') title('trajectoire en 3D'); xlim([-40(t,z1,'k','linewidth',2); hold off grid on xlabel('t'); ylabel('z'); title('sensibilite'); Ici nous=sin(R)./R; mesh(X,Y,f); xlabel('x'); ylabel('y'); zlabel('z'); title('sin(r)/r') grid on box on Matlab

  10. New Directions in the Development of Population Estimates in the United States?

    E-Print Network [OSTI]

    Swanson, David A.; McKibben, Jerome N.

    2010-01-01

    IRS IMF IRS IRMF Medicare Selective Service HUD TRACS IndianHealth Service HUD MTCS Social Security “NUMIDENT” EditedMedicare Edited SSS Edited HUD TRACS Edited IHS Edited MTCS

  11. ACRO V.2.0

    Energy Science and Technology Software Center (OSTI)

    001742MLTPL01 Acro (A Common Repository for Optimizers) v. 2.0  https://software.sandia.gov/trac/acro 

  12. MEGA

    Energy Science and Technology Software Center (OSTI)

    002444SUPER00 Modular Environment for Graph Research and Analysis with a Persistent  http://software.sandia.gov/trac/megraphs 

  13. EMPASE

    Energy Science and Technology Software Center (OSTI)

    002556MLTPL00 EMPaSE: an Extensible Multi-Paradigm Simulation Environment  https://software.sandia.gov/trac 

  14. SWQM

    Energy Science and Technology Software Center (OSTI)

    002617MLTPL00 SWQM: Source Water Quality Modeling Software  https://software.sandia.gov/trac/canary/downloader/download/category/10 

  15. Analysis and Characterization of Halogenated Transformation Products of Pharmaceuticals and Personal Care Products in Wastewater Effluent

    E-Print Network [OSTI]

    Bulloch, Daryl Neil

    2013-01-01

    emerging contaminants in sewage sludge. Trac-Trends Anal.mass spectrometry in sewage sludge from the Spanish area of

  16. The Storminess Record from Armagh Observatory, N. Ireland 17962002. Introduction

    E-Print Network [OSTI]

    of the difficulties in asse bling such chronologies, even fro one site. The weather diary record from 1796

  17. doi:10.1152/jn.00549.2010106:999-1015, 2011. First published 8 June 2011;J Neurophysiol Stacie A. Chvatal, Gelsy Torres-Oviedo, Seyed A. Safavynia and Lena H. Ting

    E-Print Network [OSTI]

    . Electromyographs in 16 lower back and leg muscles of the stance leg were measured. Initially ( 100-ms latency), electromyographs, CoM acceleration, and forces were sim- ilar in nonstepping and stepping responses different dynamic conditions: stepping and nonstepping postural re- sponses. balance; electromyograph; falls

  18. GaAs Nanowire Array Solar Cells with Axial p-i-n Junctions Maoqing Yao, Ningfeng Huang, Sen Cong, Chun-Yung Chi, M. Ashkan Seyedi, Yen-Ting Lin, Yu Cao,

    E-Print Network [OSTI]

    Zhou, Chongwu

    into multijunction solar cells. Here, we report GaAs nanowire solar cells with axial p-i-n junctions that achieve 7-Queisser efficiency limit is to use multijunction solar cells containing several p-n junctions in series.22-26 Each multijunction solar cells consist of sequentially stacked thin films. The lattice constants of the materials

  19. SEP Success Story: Research Laboratory Experiments with Energy...

    Office of Environmental Management (EM)

    Mark Huddleston held at EnerTrac, Inc., in Hudson, NH. | Courtesy of University of New Hampshire Photographic Services SEP Success Story: "Green Launching Pad" Supports...

  20. FAST

    Energy Science and Technology Software Center (OSTI)

    002363MLTPL00 FAST - A Framework for Agile Software Testing v. 2.0  https://software.sandia.gov/trac/fast 

  1. Multimedia Environmental Distribution of Nanomaterials

    E-Print Network [OSTI]

    Liu, Haoyang Haven

    2015-01-01

    into the atmospheric and water compartments are expressedDiallo, Nanomaterials and Water Purification: Opportunitiesnanoparticles in natural waters. Trac-Trends in Analytical

  2. CANARY-EDS V.4.3

    Energy Science and Technology Software Center (OSTI)

    002119IBMPC01 Characterization and Analysis of Networked Array of Sensors for Event Detection (CANARY-EDS)  https:/Isoftware.sandia.gov/trac/canary/ 

  3. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    for a way to improve these results? The Atacama Cosmology Telescope: Cosmology from Galaxy Clusters Detected via the Sunyaev-Zel'dovich Effect Sehgal, Neelima ; Trac, Hy ;...

  4. Maximum Fuel Utilization in Advanced Fast Reactors without Actinides Separation

    E-Print Network [OSTI]

    Heidet, Florent

    2010-01-01

    Fuel- Trac, Spent Fuel / Reprocessing, in Nuclear IndustryCycle without Fuel Reprocessing, in Advanced reactors safetyOn the other hand, fuel reprocessing has been successfully

  5. Maximum Fuel Utilization in Advanced Fast Reactors without Actinides Separation

    E-Print Network [OSTI]

    Heidet, Florent

    2010-01-01

    Oxford ; New York ; Oxford University Press. Fuel- Trac,Spent Fuel / Reprocessing, in Nuclear Industry Statusto Burn Non-Fissile Fuels. 2008. GA. Energy Multiplier

  6. CALIFORNIA INSTITUTE OF TECHNOLOGY Human Resources System Responsibilities Access Request

    E-Print Network [OSTI]

    Winfree, Erik

    Administration o o Annual Salary Increase - System Administration o o Group 2 HR FPSO o o HR FRO o o Group 3 HR

  7. ANNOUNCING FOR 2015 To add to your online resources for 2015

    E-Print Network [OSTI]

    Cai, Long

    .nature.com/nplants From Bench to Biosphere To add contac com com ulting com Ltd com com au m/nplants Launch all aspe · fro

  8. Impact of positional difference on the measurement of breast density using MRI

    E-Print Network [OSTI]

    2015-01-01

    Ting Tang, Jia Shen Hon, Po-Chuan Tseng, Angela T. Cheriyan,Taichung 40402, Taiwan Po-Chuan Tseng, Angela T. Cheriyan,

  9. Codes for the fast SSS QR eigens

    E-Print Network [OSTI]

    M. Gu, B. Parlett, D. Ting, J. Xia, J. Comput. Electron. 1(2002), pp. 411-414. Codes for statistical condition estimations of linear systems and eigenproblems.

  10. Nonlocal effective medium analysis in symmetric metal-dielectric...

    Office of Scientific and Technical Information (OSTI)

    medium analysis in symmetric metal-dielectric multilayer metamaterials Authors: Sun, Lei ; Li, Zhigang ; Luk, Ting S. ; Yang, Xiaodong ; Gao, Jie Publication Date:...

  11. Development and Implementation of Degree Programs in Electric...

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

    and Vehicle Technologies Program Annual Merit Review and Peer Evaluation arravt035ting2011p.pdf More Documents & Publications Development and Implementation of Degree...

  12. Self-Assembly of Polymer Nano-Elements on Sapphire

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

    the microelectronic and storage industries and perhaps others, such as photovoltaics. Self-Assembling Molecular Legos Tom Russell (UMass) and Ting Xu (UCBerkeley) had...

  13. Cystolepiota else c vellinga 5 June 2007, vellinga@nature.berkeley.edu / ecvellinga@comcast.net Key to the Cystolepiota species in western North America

    E-Print Network [OSTI]

    Key to the Cystolepiota species in western North America 1. Stipe and pileus with lilac and violaceous tinges; smell strong, of coal gas (indole), like the smell of Tricholoma sulphureum and T. inamoenum, without lilac or violaceous tinges, and not smelling of coal gas, but of Lepiota cristata 2. Pileus

  14. The first ML scale for North of Vietnam Le Minh Nguyen a,d

    E-Print Network [OSTI]

    Wu, Yih-Min

    The first ML scale for North of Vietnam Le Minh Nguyen a,d , Ting-Li Lin a,*, Yih-Min Wu a , Bor Attenuation Vietnam Northern Vietnam a b s t r a c t The first local magnitude scale (ML) for Northern Vietnam has been derived using a portable broadband seismic network in Northern Vietnam as part

  15. TR-IIS-08-004 MaXIC-Q: A Fully Automated Generic

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    -Chiang Tsou, Paul Chuan-Yih Yu, Yi-Ju Chen, Ke-Shiuan Lynn, Wen-Chi Chou, Yu-Ju Chen, Ting-Yi Sung, and Wen-Chiang Tsou1 , Paul Chuan-Yih Yu1 , Yi-Ju Chen2 , Ke-Shiuan Lynn1 , Wen-Chi Chou1 , Yu-Ju Chen2 , Ting-Yi Sung

  16. Eleventh Workshop on Numerical Ranges and Numerical Radii National Sun Yat-sen University, Kaohsiung, Taiwan

    E-Print Network [OSTI]

    Wong, Ngai-Ching

    , Kaohsiung, Taiwan July 9-12, 2012 Special guest: Pei Yuan Wu (Taiwan) Speakers T. Ando (Japan), N. Bebiano (Portugal), Jor-Ting Chan (Hong Kong), Chi-Tung Chang (Taiwan), Wai-Shun Cheung (Hong Kong), M. D. Choi (Canada), Daeshik Choi (USA), Mao-Ting Chien (Taiwan), Chang-Pao Chen (Taiwan), M. Fiedler (Czech), Hwa

  17. AN IMPROVED DYNAMIC MODEL FOR THE STUDY OF A FLEXIBLE PAVEMENT

    E-Print Network [OSTI]

    Avignon et des Pays de Vaucluse, Université de

    countries. Pavements carrying light trac make up a signicant share of the road network and must, as a result. 1) is able to exert an impulse load similar in magnitude and duration to the moving wheel on a truck

  18. Essays on Urban Transportation and Transportation Energy Policy

    E-Print Network [OSTI]

    Kim, Chun Kon

    2008-01-01

    E?ects of Transportation Energy policy on Tra?c Crashes .e?ciency standards. Energy Policy, 33(3), 407–419. Blincoe,what’s necessary? Energy Policy, 34(9), 971–974. Bose, R.

  19. A Scalable Streaming Framework for Video-Driven Collaborative Visualization Environments /

    E-Print Network [OSTI]

    Kimball, Jason Robert

    2014-01-01

    air tra?c control, submarine periscope operation, and sensorFigure 2.5. These include a periscope scanning the ocean, aof the window. (a) Submarine periscope panning the ocean (b)

  20. The NIDS Cluster: Scalable, Stateful Network Intrusion Detection on Commodity Hardware

    E-Print Network [OSTI]

    Tierney, Brian L

    2008-01-01

    a similar problem with Bro’s IRC analyzer, which tracks asigni?cant amount of state for each IRC user encountered.campus network, the share of IRC tra?c is relatively large,

  1. Physical Layer Characteristics and Techniques for Visible Light Communications

    E-Print Network [OSTI]

    Cui, Kaiyun

    2012-01-01

    and B. Gallagher. Using led lighting for ubiquitous indoorcommunications using white led lighting. IEEE J. on Sel.based on either indoor LED lighting or outdoor LED tra?c

  2. Modelling of power plant dynamics and uncertainties for robust control synthesis *

    E-Print Network [OSTI]

    Ray, Asok

    , TRAC type models3 have been applied to perform safety analysis of nuclear power plants. However, complex dynamic processes such as fossil and nuclear power plants can be modelled and simulated

  3. Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis 

    E-Print Network [OSTI]

    Claflin, Amy Elizabeth

    2013-08-30

    methods that require less time, labor, skill, and cost. Microwave drying and nuclear magnetic resonance technologies for the determination of moisture and fat in meat products, respectively, have been incorporated into the CEM Smart Trac 5 System...

  4. BASCin: Benchmark for Android from Santa Cruz

    E-Print Network [OSTI]

    Punniyakotti, Manikandan

    2012-01-01

    statistics about mobile devices and tra?c generated by them.critical resource in any mobile device and hence there haveover the internet to the mobile device and thus drastically

  5. Non-local Scan Consolidation for 3D Urban Scenes Qian Zheng1

    E-Print Network [OSTI]

    Sharf, Andrei

    lete sc ans. D irec t su rfac e rec o nstru c tio n fro m su c h p o o r q u ality o f inp u t d ata

  6. Engineering We have explored the use of carbon black and

    E-Print Network [OSTI]

    ) to form emulsions for oil spill remediation, anodes for lithium ion batteries and electrically conducting, graphene- based/polymer composite materials, novel Si-based anodes fro Li ion batteries, advanced

  7. Building Energy Efficiency in China - Status, Trends, Targets, and Solutions 

    E-Print Network [OSTI]

    Xia, J.

    2008-01-01

    It is well accepted that the reduction of building energy consumption is one of the most effective actions fro reducing the emission of CO2 and for protection of energy resources world wide. Understanding and comparing the real building energy...

  8. Jianlin Xia - Publications

    E-Print Network [OSTI]

    M. Gu, B. Parlett, D. Ting, and J. Xia, Low-rank update eigensolver for supercell band structure calculations, J. Comput. Electron., 1 (2002), pp. 411-414. (PDF.

  9. Femtosecond-laser hyperdoping and texturing of silicon for photovoltaic applications

    E-Print Network [OSTI]

    Mazur, Eric

    #12;! #12;Femtosecond-laser hyperdoping and texturing of silicon for photovoltaic applications Eric Mazur Yu-Ting Lin Femtosecond-laser hyperdoping and texturing of silicon for photovoltaic.2 Organization of the dissertation . . . . . . . . . . . . . . . . . . . . . 2 2 Progress in photovoltaics: black

  10. THE CIRCULATORY SYSTEM AND BLOOD General charectertllUCIL______ _ _______ 23ll

    E-Print Network [OSTI]

    ·system is compensated by thepulsa..ting vesaelsof the mantle and by the contractions of two aeeessery hea.rt8on from which the heart has been re- moved; after the material has l!8t, the plaster molds

  11. New tools, like a flexible suturing device, have made endoscopically-

    E-Print Network [OSTI]

    Ford, James

    to freeze them in a technique called cryotherapy. She followed that a few weeks later with ra- diofrequency what would have happened if it hadn't been for that piece of meat get- ting stuck." Having a place like

  12. Assessing Visuospatial Neglect in Children with Brain Injury 

    E-Print Network [OSTI]

    Wahlberg, Andrea Christine

    2014-05-28

    lead to overgeneralization of the neural basis of VSN (Ting et al., 2011). Brain imaging studies utilizing functional magnetic resonance imaging (fMRI), positron emission tomography (PET), perfusion weighted imaging (PWI), and diffusion 15...

  13. NUMERICAL SOLUTION OF THE MULTIDIMENSIONAL BUCKLEY-LEVERETT EQUATION BY A SAMPLING METHOD

    E-Print Network [OSTI]

    Albright, Norman

    2011-01-01

    for his continuing advice on PSM. We thank also P. Colella,Alternatives to split- ting in PSM, now under study, holdmultidimensional solutions. PSM is capable of being extended

  14. Event Correlation: Language and Semantics Cesar Sanchez, Sriram Sankaranarayanan, Henny Sipma,

    E-Print Network [OSTI]

    Sánchez, César

    Event Correlation: Language and Semantics C´esar S´anchez, Sriram Sankaranarayanan, Henny Sipma, Ting Zhang, David Dill, and Zohar Manna Computer Science Department Stanford University {cesar,srirams

  15. Event Correlation: Language and Semantics Cesar Sanchez, Sriram Sankaranarayanan, Henny Sipma,

    E-Print Network [OSTI]

    Sánchez, César

    Event Correlation: Language and Semantics Câ??esar Sâ??anchez, Sriram Sankaranarayanan, Henny Sipma, Ting Zhang, David Dill, and Zohar Manna # Computer Science Department Stanford University {cesar,srirams

  16. A NOVEL VIDEO MATCHING FRAMEWORK FOR COPY DETECTION Chih-Yi Chiu (), Hsin-Min Wang ()

    E-Print Network [OSTI]

    Wang, Hsin-Min

    results. Fig. 1 shows the result of in- putting the phrase "UFO Apollo 11" to YouTube, where most. The first fifteen search results retrieved by input- ting the phrase "UFO Apollo 11" to YouTube. 1

  17. Optimal RCPC channel rate allocation in AWGN channel for perceptual video quality using integer programming

    E-Print Network [OSTI]

    Lin, T.L.; Cosman, P C

    2009-01-01

    D. P. Bertsekas, Nonlinear Programming, Athena Sci- entific,QUALITY USING INTEGER PROGRAMMING Ting-Lan Lin and Pamela C.across packets. Integer programming is used to solve this

  18. Propulsion System Characterization for the SPHERES Formation Flight and Docking Testbed

    E-Print Network [OSTI]

    evaluating control algorithms. Performance variations resulting from manufacturing, system set- tings. This thesis leans heavily on work started by Simon Nolet. I am grateful for his guidance and in his debt

  19. Simulation and optimization of a two-wheeled, ball- flinging robot

    E-Print Network [OSTI]

    Chen, Po-Ting

    2010-01-01

    Wheeled, Ball-Flinging Robot A thesis submitted in partiala Two-Wheeled, Ball-Flinging Robot by Po-Ting Chen Master ofremote controlled robot. The robot is maneuverable and

  20. Conceptual aircraft dynamics from inverse aircraft modeling 

    E-Print Network [OSTI]

    Ziegler, Gregory E

    1999-01-01

    This thesis presents a method of construe' ting a nonlinear dynamics model of a theoretical aircraft from the nonlinear batch simulation of an existing aircrew This method provides control law designers with a method of fabricating nonlinear models...

  1. A Key Management Scheme in Distributed Sensor Networks Using Attack Probabilities

    E-Print Network [OSTI]

    Poovendran, Radha

    , Radha Poovendran and Ming-Ting Sun spchan@u.washington.edu, {radha,sun}@ee.washington.edu Department such as real-time traffic monitoring, mili- tary sensing and tracking, wildlife monitoring and tracking, etc

  2. Rocky Flats 1990--91 winter validation tracer study: Volume 1

    SciTech Connect (OSTI)

    Brown, K.J.

    1991-10-01

    During the winter of 1990--91, North American Weather Consultants (NAWC) and its subcontractor, ABB Environmental Services (ABBES), conducted a Winter Validation Study (WVS) for EG&G Rocky Flats involving 12 separate tracer experiments conducted between February 3 and February 19, 1991. Six experiments were conducted during nighttime hours and four experiments were conducted during daytime hours. In addition, there was one day/night and one night/day transitional experiment conducted. The primary purpose of the WVS was to gather data to further the approval process for the Terrain Responsive Atmospheric Code (TRAC). TRAC is an atmospheric dispersion model developed and operated at the Department of Energy`s (DOE`s) Rocky Flats Plant (RFP) north of Denver, Colorado. A secondary objective was to gather data that will serve to validate the TRAC model physics.

  3. DOI: 10.1002/adma.200701956 Geometric Considerations of Micro-to Nanoscale Elastomeric Post

    E-Print Network [OSTI]

    Chen, Christopher S.

    DOI: 10.1002/adma.200701956 Geometric Considerations of Micro- to Nanoscale Elastomeric Post Arrays cultured on this substrate deflect underlying posts as they contract. Trac- tion forces could be calculated from these post deflections using a simple force-displacement relationship for pure bend- ing

  4. Ruprecht-Karls-Universitat Heidelberg Institute of Computer Science

    E-Print Network [OSTI]

    Gertz, Michael

    Hilfe bei der Nutzung der ResourceUtilizationTrac- ingLibrary und der PowerTracingLibrary danken. J and Distributed Systems Masterthesis Model and simulation of power consumption and power saving potential of energy efficient cluster hardware Name Timo Minartz Student number 2676380 Supervised by Julian M. Kunkel

  5. M.Sc. Thesis Forensic examination of log files

    E-Print Network [OSTI]

    to aid the investigation, so that the digital evidence can be extracted in a fast and e#cient manner of artificial neural networks to classify router logs, classification of each log entry, and development of Service, Flow Classification, Feature Extraction, Tra#c Aggregation. #12; #12; Contents 1 Introduction 1 1

  6. COMPTROLLER FORM NO. 70B (2/2007) THE UNIVERSITY OF CHICAGO

    E-Print Network [OSTI]

    He, Chuan

    OR COOPERATIVE AGREEMENT ADVANCE ACCOUNT - LEDGERS 5 AND 6 PART I TO BE COMPLETED BY DEPARTMENT A. URA TRACS. _______________________ B. TYPE OF ACCOUNT REQUESTED: MASTER (__), COST SHARING (__), OR OTHER ASSOCIATE (__); FEDERAL OF AWARD: GRANT (__) CONTRACT (__) OR COOPERATIVE AGREEMENT (__); DIRECT AWD (__) OR PASS-THROUGH AWD, i

  7. Transport de masse sur la Terre Ludovic Rifford

    E-Print Network [OSTI]

    Rifford, Ludovic

    Transport de masse sur la Terre Ludovic Rifford Universit´e de Nice - Sophia Antipolis & Institut Universitaire de France Colloquium de l'Institut de Math´ematiques de Jussieu Ludovic Rifford Transport de masse des courbes trac´ees sur M qui relient x `a y. Ludovic Rifford Transport de masse sur la Terre #12

  8. Transport de masse sur la Terre Ludovic Rifford

    E-Print Network [OSTI]

    Rifford, Ludovic

    Transport de masse sur la Terre Ludovic Rifford Universit´e de Nice - Sophia Antipolis & Institut Universitaire de France Colloque 2012 de la Soci´et´e Math´ematique de Tunisie Ludovic Rifford Transport de des courbes trac´ees sur M qui relient x `a y. Ludovic Rifford Transport de masse sur la Terre #12

  9. Annales Geophysicae, 23, 19091916, 2005 SRef-ID: 1432-0576/ag/2005-23-1909

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    cannot be explained by velocity filter only. The results sug- gest that additional energization region. Keywords. Magnetospheric physics (Magnetospheric con- figuration and dynamics, Solar wind to investigate how the Earth's iono- sphere/magnetosphere responds to solar activities. By trac- ing them

  10. Road to Smart MobilityWorkshop You're Invited!

    E-Print Network [OSTI]

    Bertini, Robert L.

    Road to Smart MobilityWorkshop You're Invited! Join a cross section of transportation professionals and Continental Breakfast 9:45 am-Welcome 10:00 am- Smart Mobility 101 · Mark Hallenbeck, Director, TRAC:00 pm- Role of the Public and Private Sector in Smart Mobility · Paige Fitzgerald, Connected Citizens

  11. IEICE TRANS. ??, VOL.Exx--??, NO.xx XXXX 200x Stochastic Analysis of Finite Population Bu#erless

    E-Print Network [OSTI]

    Akar, Nail

    wavelength if that wavelength is avail­ able. Otherwise, a wavelength conversion unit is used to convert of a conversion unit [3]. When the packet arrival process is Poisson and the packet lengths are exponentially/burst switching system with full wavelength conversion. Most of the existing work use Poisson tra#c models

  12. LWA1 RFI SURVEY KENNETH S. OBENBERGER & JAYCE DOWELL

    E-Print Network [OSTI]

    Ellingson, Steven W.

    LWA1 RFI SURVEY KENNETH S. OBENBERGER & JAYCE DOWELL 1. Introduction In order to get a clearer://fornax.phys.unm.edu/lwa/trac 1 #12;2 KENNETH S. OBENBERGER & JAYCE DOWELL lightning sources hit amplitudes up to 18 dB, 14 d;4 KENNETH S. OBENBERGER & JAYCE DOWELL 3. Occupancy and Spectral Kurtosis One can use spectral kurtosis

  13. Presented by The University of Tennessee Center

    E-Print Network [OSTI]

    Miron Livny ­ University of Wisconsin #12;2 Managed by UT-Battelle for the U.S. Department of Energy amount of existing experience in deploying similar capabilities · Allocated through TRAC #12;3 Managed by UT-Battelle for the U.S. Department of Energy Ahern_NSF vis_SC10 Managed by UT-Battelle for the U

  14. FAST COMPRESSIVE SAMPLING WITH STRUCTURALLY RANDOM MATRICES Thong T. Do

    E-Print Network [OSTI]

    FAST COMPRESSIVE SAMPLING WITH STRUCTURALLY RANDOM MATRICES Thong T. Do , Trac D. Tran and Lu Gan of fast and efficient com- pressive sampling based on the new concept of structurally random matrices low complexity and fast computation based on block processing and linear filtering. (iv

  15. Setting and Maintaining Arecibo Observatory's Timing Systems

    E-Print Network [OSTI]

    Frequency Standard 14 Time Code Generators TRAK Synchronized Time Code Generator 38 EECO Time Code Generator the time codes if the TRAC Synchronized Time Code Generator fails. Soon the TrueTime time code generator) Time Code Generator TRAK Synchronized Time Code Generator EECO Time Code Generator Transfer standard

  16. Sustainability Strategic Plan 20132016 At Yale, we believe that

    E-Print Network [OSTI]

    Post, David M.

    solid waste · 28% recycling rate · 95% of dining hall food waste composted · 37% of dining hall food policies, waste reduction, and building renovation and construction. The strategic plan that follows energy, serving food, circulating vehic- ular and pedestrian trac, distributing documents

  17. Atmos. Chem. Phys., 8, 32553281, 2008 www.atmos-chem-phys.net/8/3255/2008/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    aerosol module with 5 aerosols types. All trac- ers are advected using the semi-Lagrangian scheme native to GEM. The vertical transport includes parameterized subgrid- scale turbulence and large scale deep convection. Dry depo- sition is included as a flux boundary condition in the vertical diffusion equation. Wet

  18. M i c h i g a n S t a t e U n i v e r S i t y In this issue

    E-Print Network [OSTI]

    Dubai Initiative­38 New Faces at ISP­48 Volume 9 / 2008 In This Issue FRoM the DeAN 1 Year of Arts in the Serengeti 36 Office of Study Abroad 37 Visiting International Professional Programs DUBAI 38 MSU to serve as the blueprint for improving the quality of life throughout the world. Using these Millennium

  19. HMSC Management Committee Meeting 28 January, 2005, 1:30 PM

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    follow that of the HMSC Strategic Plan. Organizational diagrams and detailed agency information could management plan fro red foxes has been submitted. Red foxes introduced on some rocks are eliminating some sea, where each of the 12 agencies or OSU units would take on the rotating responsibility for inviting

  20. Essays on empirical time series modeling with causality and structural change 

    E-Print Network [OSTI]

    Kim, Jin Woong

    2006-10-30

    sector is the most root cause sector. Test results show that DAG from ex ante forecast innovations is consistent with the DAG fro m ex post fit innovations. This supports innovation accounting based on DAGs using ex post innovations. In the second essay...

  1. Fishery Leaflet 524 UNITED STATES DEPARTMENT OF THE INTERIOR

    E-Print Network [OSTI]

    is through the siphon, a short InUSCU- lar tube b eginning in the neck. Through it a re expelled the body wastes, the eggs, and th e fluid froIn the ink sac. Water entering th Inantle cavity through the siphon

  2. Natural gas annual 1994: Volume 2

    SciTech Connect (OSTI)

    NONE

    1995-11-01

    The Natural Gas Annual provides information on the supply and disposition of natural gas to a wide audience including industry, consumers, Federal and State agencies, and educational institutions. This report, Volume 2, presents historical data fro the Nation from 1930 to 1994, and by State from 1967 to 1994.

  3. Biocontrol S cience and Technology ( 1999) 9, 529 543 Wheat Seed Colonized with Atoxigenic Aspergillus avus

    E-Print Network [OSTI]

    Cotty, Peter J.

    ). When applied as a solid formulation, the biocontrol agent is activated by m oisture (fro m irrigation of biocontrol agents must allow cost eVective production and adequate stability to allow the productBiocontrol S cience and Technology ( 1999) 9, 529± 543 Wheat Seed Colonized with Atoxigenic

  4. College of Arts & Sciences Sociology, MA

    E-Print Network [OSTI]

    New Mexico, University of

    research problems or types of data fro which the methods are useful. They will also be able to explain, and be able to note research applications of insights from the classical sociological theories of Marx, Weber of sociological theory. C. Students will understand the nature of sociological research methods and how they may

  5. CARIBBEA SEA MFR REPRINT 971

    E-Print Network [OSTI]

    Maracaibo, Venezuela, where the subadult shrimp are harvested in the lake by beach seines and cast nets or clean sand botto m , nor distant fro m brac kish water lagoons. On th e Pac ific coas t, th e la rge

  6. Combining Symbolic Execution and Model Checking for Data Flow Testing

    E-Print Network [OSTI]

    Su, Zhendong

    . Dynamic Symbolic Execution [14], [15] (DSE) is a widely accepted and effective approach for automatic testCombining Symbolic Execution and Model Checking for Data Flow Testing Ting Su Zhoulai Fu Geguang Pu@cs.ucdavis.edu Abstract--Data flow testing (DFT) focuses on the flow of data through a program. Despite its higher fault

  7. ACOUSTIC REMOTE SENSING OF THE NORTH PACIFIC ON GYRE AND REGIONAL SCALES

    E-Print Network [OSTI]

    Dushaw, Brian

    the mesoscale with high resolution, for measuring barotropic ocean currents in a unique way, and for directly - Since it was first proposed in the late 1970's (Munk and Wunsch 1979, 1982), ocean acoustic tomography variety of physical set- tings. In the context of long-term oceanic climate change, acoustic tomography

  8. Publications of Richard E. Brown Refereed Journal Articles

    E-Print Network [OSTI]

    Status of Office Equipment in the USA." Energy. vol. 31, no. 14. (also LBNL-57470). November. pp. 2823-2838. Brown, Richard E., and Jonathan G. Koomey. 2003. "Electricity Use in California: Past Trends and Present, Bruce Nordman, Richard E. Brown, Maryann Piette, Michael Ting, and Alan Meier. 2002. "Electricity Used

  9. Influence of temperature and photoexcitation density on the quantum efficiency of defect emission in ZnO powders

    E-Print Network [OSTI]

    Liu, Jie

    excitation power density on the efficiency of intrinsic defect emission in ZnO powders was characterized. This material system is potentially useful as an ultraviolet-photoexcited, white light phosphor under low-power.1063/1.2753540 Since the introduction of nitride-based white light emit- ting diodes LEDs in the mid-1990s, much

  10. The morphology and histology of the alimentary canal and malpighian tubes of the adult of the boll weevil, Anthonomus grandis Boh. (Coleoptera: Curculionidae 

    E-Print Network [OSTI]

    Sundman, Jack Allen

    1961-01-01

    , oonoluded that ths order waF be divided into two or these suborders and seven series, Ting (1996) studied the oharaoters of the mouthparts of the Bhynoe phora and oonoluded that these insects are of a ronoyhyleotio stook, Other incest%gut%one of tbs...

  11. Synthesis of Tactical Plans for Robotic Excavation

    E-Print Network [OSTI]

    Singh, Sanjiv

    of soil varies immensely, and in general, it is not possible to analytically describe the mechanics the early work and for set- ting me on track to investigate soil mechanics. Thanks to Dan Koditschek an approach to synthesizing plans for robotic excavators. Excava- tion tasks range from loading a pile of soil

  12. Studying MRI acquisition protocols of sustained sounds with a multimodal acquisition system

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    system which utilizes infrared emit- ting diodes (IREDs) requires that the sensors to be visible from a multimodal acquisition system which uses electromagnetogra- phy sensors to locate the US probe a millimetric accuracy 3D MRI images of the vocal tract have enabled more accurate evaluations of vocal tract

  13. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 59, NO. 11, NOVEMBER 2011 4209 A Novel Multiband Planar Antenna for

    E-Print Network [OSTI]

    Tentzeris, Manos

    Multiband Planar Antenna for GSM/UMTS/LTE/Zigbee/RFID Mobile Devices Ting Zhang, RongLin Li, Senior Member of global-operability RFID readers and RFID-enabled wireless sensors Zigbee-based controllers in state operating bands that effectively cover the GSM/UMTS/LTE/Zigbee/RFID oper- ations in mobile de

  14. A Distributed Computer Automation and Control System for IBM's GTD Process Plant at Austin Texas 

    E-Print Network [OSTI]

    Getter, L. C.

    1982-01-01

    chemical day tank in the manufacturing building is full, a messaee is sent over the data highway to the Tank Farm PLC instruc ting it to discontinue chemical feed and seal the pumping system. CDC/i:anl: :':'arm The Chemical Distribution Center manaees...

  15. Alexey Gotsman and Hongseok Yang (draft) The Importance of Being Linearizable

    E-Print Network [OSTI]

    Yang, Hongseok

    , such as calls to and returns from a library. Such interactions have to be taken into account when defining most algorithms get- ting published are shown to satisfy it, so far the notion has not been defined the linearizability of a library tells us anything about the behaviour of its clients. Rather, linearizability has

  16. 1724 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 59, NO. 3, MARCH 2013 The Embedding Capacity of Information Flows

    E-Print Network [OSTI]

    Tong, Lang

    linear system that, for a broad range of renewal models encountered in practice, admits a fully by inaccuracy of the renewal traffic model rather than of the solution itself. Index Terms--Embedding capacity of Information Flows Under Renewal Traffic Stefano Marano, Vincenzo Matta, Ting He, Member, IEEE, and Lang Tong

  17. Liu aLumnus heads ikea new hope for africa cuLturaL jigsaw puzzLes feLL in Love with sweden warm encounters Antarctic adventureLiU alumnus Carl Wernhoff has been chasing photons at the South Pole | page 12

    E-Print Network [OSTI]

    Zhao, Yuxiao

    Solar energy gives hope LiU hosted World Renewable Energy Congress | page 22 magazine Energy Congress 2011. It was a week of critical assessment of issues rela- ting to renewable energy. "Many small drops can form a river, which is the foundation for future energy systems. The solution

  18. 2015 Phi Beta Kappa Nominees Marc Andre Abboud

    E-Print Network [OSTI]

    Burke, Kieron

    Ting Ng Irene Sandy Ng William Bill Ngo Tricia Thuy Trang Nguyen Bac-Ha Hoang Nguyen Long Ly Lac Nguyen Datu Soraya Davia Eric Kwang Davis Trisha Lynn Deason Casey Evan Deaver Kathleen Deck Wilfred Oconer Suzanne Kellogg Noble William Kennamer Kacie Nicole Kesler Lauren Taylor Kim Annie Yu Rim Kim Logan

  19. Lithium-ion batteries can fail and catch fire when overcharged, exposed to high temperature or short-circuited due to the highly flammable organic liquid used in the electrolyte. Using inorganic

    E-Print Network [OSTI]

    Lithium-ion batteries can fail and catch fire when overcharged, exposed to high temperature for Lithium-Ion Battery Solid Electrolytes Ting Yang Advisor: Dr. Candace K. Chan July 11, 2012; 2:00 PM; ISTB was explored. Amorphous lithium niobate nanowires were synthesized through the decomposition of a niobium

  20. The UIC ScribeThe UIC ScribeThe UIC ScribeSTUDENT-ORGANIZED OFFICIAL NEWSLETTER OF YONSEI, UNDERWOOD INTERNATIONAL COLLEGE SSSUMMERUMMERUMMER EEEDITIONDITIONDITION

    E-Print Network [OSTI]

    Burgstaller, Bernd

    The UIC ScribeThe UIC ScribeThe UIC ScribeSTUDENT-ORGANIZED OFFICIAL NEWSLETTER OF YONSEI of The Scribe goes to press, we are in the blissful, regret-tinged final days of summer. The weather is still`s metro system and its crowded streets to find our way to splendidly air-conditioned corporate

  1. STABILITY ANALYSIS OF NON-CONSTANT BASE STATES IN THIN FILM EQUATIONS

    E-Print Network [OSTI]

    Nabben, Reinhard

    the one obtained by the linear stability analysis with "frozen modes", frequently found in the literature. multiple-scale methods, stability analysis, rim instability, free boundaries, dewet- ting films AMS subject important tools to predict pattern formation in many phenomena in nature and technological processes

  2. Statistical Model Checking in BioLab : Applications to the automated analysis of T-Cell Receptor

    E-Print Network [OSTI]

    Langmead, Christopher James

    ), the Army Research Office (ARO), and the General Motors Lab at CMU awards to E.M.C., as well as the U.S. Department of Energy Career Award (DE-FG02-05ER25696), a Pittsburgh Life-Sciences Green- house Young Pioneer in industrial set- tings, where it is the preferred method for formal verification of circuit designs. Briefly

  3. UBC Social Ecological Economic Development Studies (SEEDS) Student Report EMPOWERING EATERS TO MAKE CLIMATE-FRIENDLY CHOICES: A PUBLIC EDUCATION

    E-Print Network [OSTI]

    , Shanshan Li, Yingqi (Winnie) Li, Katherine Lin, XiuTing (Candace) Lin University of British Columbia AGSC at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about.....................................................................Error! Bookmark not defined.7 P.L.O.W. Definition and Justification of Carbon Smart Food

  4. Energy Requirement for Lignocellulosic Feedstock Densifications in Relation to Particle Physical Properties, Preheating, and Binding

    E-Print Network [OSTI]

    Properties, Preheating, and Binding Agents Zewei Miao,, Tony E. Grift,*,, Alan C. Hansen,, and K. C. Ting the energy consumption of herbaceous feedstock compression in relation to particle physical properties-combustion with coal or direct combustion for domestic heating, steam, and electricity generation.13-17 In recent years

  5. MFR PAPER 1236 Export Opportunities for

    E-Print Network [OSTI]

    percent of the world' fi hery resource under U. . control. Hence- forth, Regional Management Council and includ activi- tie uch a : review of exi ting data on re ource availability and harvesting technology of proc ing t chnology and product engin ering problem a nece ary to p rmit efficient manufacturing

  6. Transactions of the ASABE Vol. 57(2): 355-362 2014 American Society of Agricultural and Biological Engineers ISSN 2151-0032 DOI 10.13031/trans.57.10167 355

    E-Print Network [OSTI]

    . Isaac et al. (2006) optimized the ground speed of a combine harvester to maximize net income. Mc FOR MAXIMIZING BALER THROUGHPUT RATE S. K. Mathanker, J. D. Maughan, A. C. Hansen, T. E. Grift, K. C. Ting the ground speed of harvesting machines to maximize their throughput rate in relation to yield level is one

  7. 2005 IEEE ElectricShip Technologies Symposium Parallel Operation of Shunt Active Power Filters for

    E-Print Network [OSTI]

    Lehman, Brad

    for Damping of Harmonic Propagation in Electric Shipboard Power Systems Ting Qian', Brad Lehman', Anindita, and there is a significant deterioration of power quality in the electrical plants of modern warships. Severa1problems can power system, such as in an electric ship. Thus, an alternative approach is to use a Shunt Active Power

  8. Heat transfer to a fluid flowing in an annulus 

    E-Print Network [OSTI]

    Logan, Earl

    1958-01-01

    . Zntegra ting equation (5) yields e r hAg (ts-tf)de = qse - mc(ts-tl), 0 where tl is--ths initial tempez'aturs of the central pipe e The quantity f(t -tf)de was determined graphically fzom a curve similar to Pigurs g, The ooefficisnt h was not found...

  9. Winner Takes All: Competing Viruses or Ideas on fair-play Networks

    E-Print Network [OSTI]

    Rosenfeld, Roni

    . For example, in a biological virus set- ting, we have the common flu versus avian flu. In a computer virus setting, clever virus authors make sure that their code eliminates most other computer viruses fromWinner Takes All: Competing Viruses or Ideas on fair-play Networks B. Aditya Prakash Alex Beutel

  10. The AmAzing Journey of Columbia River Salmon B O N N E V I L

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

    2 WAiTing To hATch 1 reneWing The cycLe 10 reTurn ing To spAWning grounds 9 cLimbing fish LAdders 8 sWimming upsTreAm 7 Living in The oceAn 6 yolk sac redd alevin 3 Five...

  11. Optimal Model-Based Approaches for Predictive Inference in Biology 

    E-Print Network [OSTI]

    Knight, Jason Matthew

    2015-05-04

    Triff, Dr. Tim Hou, Robert Fuentes, Eunjoo Kim, Dr. Roger Zoh, Dr. Manasvi Shah, Jason Xingde Jiang, Dr. Sriram Sridharan, Dr. Mohammad Shahrokh, Dr. Esmaeil Gargari, Dr. Ting Chen, Dr. Chen Zhou, Dr. Youting Sun, Dr. Mohammad Yousefi-Rezaei, Dr. Lori...

  12. www.angewandte.org ACIEFS 48 (35) 63636562 (2009) ISSN 14337851 Vol. 48 No. 35

    E-Print Network [OSTI]

    2009-01-01

    reduced, leading to high fuel cell efficiency, and catalysts in basic medium are also more durable.[3 ionomer is required to maximize the performance of hydroxide-exchange membrane fuel cells (HEMFCs for High-Performance Hydroxide Exchange Membrane Fuel Cells Shuang Gu, Rui Cai, Ting Luo, Zhongwei Chen

  13. Journal of Power Sources 196 (2011) 36643668 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Zhu, Ting

    2011-01-01

    lithium-ion batteries are currently the preferred form of electrical energy storage devices [1 mechanisms of lithium insertion in amorphous silicon Shan Huang, Ting Zhu Woodruff School of Mechanical 2010 Available online 4 December 2010 Keywords: Battery Lithium Atomistic modeling Silicon

  14. A Secure Energy Routing Mechanism for Sharing Renewable Energy in Smart Microgrid

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    A Secure Energy Routing Mechanism for Sharing Renewable Energy in Smart Microgrid Ting Zhu Sheng, Binghamton, NY, USA Abstract--Due to volatile and rising energy prices, smart microgrids appear to be increasingly popular. Instead of one centrally located power plant, the microgrids will rely on solar panels

  15. Direct Observation of Inner and Outer G' Band Double-resonance Raman Scattering in Free Standing Graphene

    E-Print Network [OSTI]

    Xiong, Qihua

    Standing Graphene Zhiqiang Luo1 , Chunxiao Cong1 , Jun Zhang1 , Qihua Xiong1 , Ting Yu1, 2, 3* 1. Division, Singapore, 117542 3. Graphene Research Centre, National University of Singapore, Singapore, 117542 ABSTRACT of graphene, we herein report the observation of splitting in G' band in free standing graphene. Our

  16. Coupled Dual Interleaved Flyback Converter for High Input Voltage Application

    E-Print Network [OSTI]

    Lehman, Brad

    proposed integrated boost converters [7] that are beginning to see applications in automotive power buck-boost (Flyback) power converter [9,10] that utilizes one magnetic core to integrate two FlybackCoupled Dual Interleaved Flyback Converter for High Input Voltage Application Ting Qian, Brad

  17. Coling 2010: Demonstration Volume, pages 1316, Beijing, August 2010

    E-Print Network [OSTI]

    Harbin Institute of Technology {car, lzh, tliu}@ir.hit.edu.cn Abstract LTP (Language Technology Platform Technology Platform Wanxiang Che, Zhenghua Li, Ting Liu Research Center for Information Retrieval MOE) is an integrated Chinese processing platform which includes a suite of high perfor- mance natural language

  18. September 2007 21 commonplace," predicted Shinichiro

    E-Print Network [OSTI]

    Lu, Chenyang

    themselves and when they are in the water. The computers are powered by the sun, which also recharges. "LEDs are becoming popular," he explained, "because their light-emit- ting power is becoming large." Also, he noted, LEDs' power efficiency is greater than that of incandescent lamps and about same

  19. A REVOLUTION WITHIN A REVOLUTION: AFRICAN AMERICAN AND WOMEN BEAT POETS 

    E-Print Network [OSTI]

    Abernethy, Olivia

    2008-08-19

    . As the metal, is hot, it is not, given to love. It burns the thing inside it. And that thing screams. 24 The transformation seen in this excerpt of the poem hints at the subtle yet distinctive tinge of reproach Jones feels as an African American...

  20. ESC: Energy Synchronized Communication in Sustainable Sensor Networks

    E-Print Network [OSTI]

    He, Tian

    ESC: Energy Synchronized Communication in Sustainable Sensor Networks Yu Gu, Ting Zhu and Tian He Abstract--With advances in energy harvesting techniques, it is now feasible to build sustainable sensor of sustainable sensor networks is to effectively utilize a continuous stream of ambient energy. Instead

  1. R: Energy Efficient Routing for Multi-hop Green Wireless Networks

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    E2 R: Energy Efficient Routing for Multi-hop Green Wireless Networks Ting Zhu, Don Towsley-- Wireless communication consumes a significant amount of energy in wireless networks. Most multi packet transmission. These particular characteristics of wireless network make it energy inefficient

  2. Hybrid Protocol For Password-based Key Exchange in Three-party Setting

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    1 Hybrid Protocol For Password-based Key Exchange in Three-party Setting TingMao Chang, Jin Zhou in modern cryptology. The critical of this approach is that designing a secure hybrid protocol and design a hybrid protocol that UC-securely realizes such task. That is, we firstly define an appropriate

  3. Algorithms for Identifying Protein Cross-links via Tandem Mass Spectrometry

    E-Print Network [OSTI]

    Church, George M.

    Algorithms for Identifying Protein Cross-links via Tandem Mass Spectrometry Ting Chen Jake Ja e y mass spectrum. We designed fast and space-e cient algorithms for these two steps, and implemented-protein interactions and solving protein structures. We focus on new algorithms for interpretation of complex

  4. arXiv:cs.DB/0112011v25Feb2003 Interactive Constrained Association Rule Mining

    E-Print Network [OSTI]

    Antwerpen, Universiteit

    arXiv:cs.DB/0112011v25Feb2003 Interactive Constrained Association Rule Mining Bart Goethals investigate ways to support interactive mining sessions, in the set- ting of association rule mining- tion of the integration of querying conditions inside the mining phase, and the incremental querying

  5. Chinese Science Bulletin 2007 SCIENCE IN CHINA PRESS

    E-Print Network [OSTI]

    Huang, Jianbin

    Chinese Science Bulletin © 2007 SCIENCE IN CHINA PRESS Springer www.scichina.com www.springerlink.com Chinese Science Bulletin | October 2007 | vol. 52 | no. 19 | 2618-2620 Synthesis and properties of novel (Grant Nos. 20633010, 20573006 and 20425310) #12;LU Ting et al. Chinese Science Bulletin | October 2007

  6. A Smart Energy System with Distributed Access Control

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    A Smart Energy System with Distributed Access Control Cheng-Ting Lee, Cheng-Hsun Yang, Chun.chou}@gmail.com Abstract--This paper presents a new smart energy (SE) system with distributed access control. Many other SE with minimal power, latency, and cost overhead. I. INTRODUCTION Smart energy (SE) systems have been one

  7. SeqEntropy: Genome-Wide Assessment of Repeats for Short Read Sequencing

    E-Print Network [OSTI]

    Chen, Chaur-Chin

    analysis of human genome [1] and for rapid full genome sequencing and typing of various organisms. The 1000 Genomes Project, launched in 2008, bSeqEntropy: Genome-Wide Assessment of Repeats for Short Read Sequencing Hsueh-Ting Chu1,2 , William

  8. Manipulating quantum-well states by surface alloying: Pb on ultrathin Ag films T. Hirahara,1,* T. Komorida,1 A. Sato,1 G. Bihlmayer,2 E. V. Chulkov,3,4 K. He,5 I. Matsuda,5 and S. Hasegawa1

    E-Print Network [OSTI]

    Hasegawa, Shuji

    -resolved photoemission spectroscopy. Compared to clean ultrathin Ag films, the energy positions of the quantum-well states QWSs moved closer to the Fermi level due to the change of the potential barrier at the film For the surface states of clean Ag 111 , it was shown that the split- ting is too small to be observed

  9. Enzyme-mediated labeling of proteins and protein-protein interactions in vitro and in living cells

    E-Print Network [OSTI]

    Slavoff, Sarah Ann

    2010-01-01

    The E. coli biotin ligase enzyme, BirA, has been previously used by the Ting research group for site-specific labeling of peptide-tagged cell surface proteins. We sought to expand the utility of biotin ligase-mediated ...

  10. 584 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 7, NO. 2, FEBRUARY 2008 An Optimization Framework for

    E-Print Network [OSTI]

    Zhuang, Weihua

    584 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 7, NO. 2, FEBRUARY 2008 An Optimization Framework for Balancing Throughput and Fairness in Wireless Networks With QoS Support Ho Ting Cheng, Student wireless broadband networks. With limited radio resources, increasing system throughput and maintaining

  11. Research, Innovation & Economic Development at North Carolina State University ReseaRch Impetus

    E-Print Network [OSTI]

    Langerhans, Brian

    economic opportunities and improve people's lives. "Research is an investment in the future. Basic researchresults Research, Innovation & Economic Development at North Carolina State University XI, NO. 2 FALL 2011 ReseaRch Impetus: economIc RecoveRy #12;TRaNSlaTINg RESEaRCh INTo ECoNomIC gRowTh TaBlE oF Co

  12. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Scenario 2A: The True Costs of Food

    E-Print Network [OSTI]

    Costs of Food David Bradbeer, Meghan Dusdal, Vanessa Kanhai, Yen Ting (Liz) Leung, Minh Ngo, Tara Stark of a project/report". #12;Scenario 2A: The True Costs of Food Group 10 David Bradbeer, Meghan Dusdal, Vanessa Sciences 450 TA: Liska Richer #12;1 ABSTRACT The purpose of this study was to assess the true cost of food

  13. AviationWeek.com/awst Airlines to WAtch in 2013

    E-Print Network [OSTI]

    Pennycook, Steve

    and imple- ment innovative manufacturing pro- cesses--such as additive manufactur- ing--have referred A as much opportunity for small manufacturers with no access to cut- ting-edge R&D tools- tion of open-source materials research, plus a state-of-the-art Manufacturing Demonstration Facility

  14. Draft Chapter for Handbook on Logic of Normative Title: The Formalization of Practical Reasoning

    E-Print Network [OSTI]

    Thomason, Richmond H.

    Draft Chapter for Handbook on Logic of Normative Systems Title: The Formalization of Practical encompasses a small part of practical reasoning, which is concerned with selecting, commit- ting to of practical reasoning is not in place, the materials for developing such a logic are now available. 2

  15. On Choosing An Efficient Service Selection Mechanism In Dynamic Environments

    E-Print Network [OSTI]

    Yolum, Pýnar

    On Choosing An Efficient Service Selection Mechanism In Dynamic Environments Murat S, {murat.sensoy,pinar.yolum}@boun.edu.tr Abstract. Consumers use service selection mechanisms to decide mechanism has different strengths and weaknesses for different set- tings. In this paper, we propose a novel

  16. Conditional quantiles when the covariates are curves : an application to Ozone pollution

    E-Print Network [OSTI]

    Bercu, Bernard

    Conditional quantiles when the covariates are curves : an application to Ozone pollution forecasting Summary This work deals with the study of pollution data with the aim of forecas- ting the Ozone of the maximum of Ozone one day kno- wing one or several of these functional variables the day before. To do this

  17. What this work demonstrates is that it is possible to sup-ply power to devices fabricated on silicon that are moved

    E-Print Network [OSTI]

    Velev, Orlin D.

    be produced on silicon. One can envision moving light-emit- ting diodes or semiconductor lasers, for example, VCH, Weinheim 1995. [10] Handbook of Conducting Polymers, 2nd ed. (Eds: T. A. Skotheim, R. L, 72, 2900. [17] A. Moliton, in Handbook of Conducting Polymers, 2nd ed. (Eds: T. A. Skotheim, R. L

  18. uge particle accelerators have been at the vanguard of research in particle

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    of such machines -- for the LHC, a 27-km circum- ference and several billion euros -- are fuelling a serious effort counterparts, positrons, can then `surf' the electric field of a wave's wake. Particles have been accelerated- ting, radio-frequency electric field through long metallic cavities (around a metre long for medical

  19. Local waiting time fluctuations along a randomly pinned crack front Knut Jrgen Maly,1

    E-Print Network [OSTI]

    Toussaint, Renaud

    that the fracture front dynamics is governed by local and irregular avalanches with very large size and velocity a characteristic length scale of disorder Ld 15µm, the avalanche clusters become anisotropic, and the scaling- ting contact lines [13­15], where elasticity and disorder compete to shape the interface. In order

  20. Local waiting time fluctuations along a randomly pinned crack front Knut Jrgen Maly, 1 Stephane Santucci, 1 Jean Schmittbuhl, 2 and Renaud Toussaint 2

    E-Print Network [OSTI]

    Toussaint, Renaud

    that the fracture front dynamics is governed by local and irregular avalanches with very large size and velocity) # S -# with # = 1.7±0.1. Above a characteristic length scale of disorder Ld # 15µm, the avalanche clusters become], magnetic domain walls [12], or wet­ ting contact lines [13--15], where elasticity and disorder compete

  1. k Science Service Fe.e.ture---Released upon receipt but intended f o r use

    E-Print Network [OSTI]

    ; LIGHTI\\TING-- --- me latest tale of ball lightning comes from Toronto, where this qsterious phenomenonTwo balls of f i r e came in an open window, which faces north. They were about ttlro f e e t apart and cme

  2. Traveling Waves with Paraboloid Like Interfaces for Balanced Bistable Dynamics

    E-Print Network [OSTI]

    Hamel, François

    University 88, S-4, Ting Chou Road, Taipei 116, Taiwan c Universit´e Aix-Marseille III, LATP (UMR CNRS 6632 e Laboratoire M.I.P. (UMR CNRS 5640) and Institut Universitaire de France Universit´e Paul Sabatier

  3. Front propagation for discrete periodic monostable equations

    E-Print Network [OSTI]

    Hamel, François

    a Department of Mathematics, National Taiwan Normal University 88, S-4, Ting Chou Road, Taipei 117, Taiwan b Universit´e Paul C´ezanne Aix-Marseille III, LATP (UMR CNRS 6632) F.S.T., Avenue Escadrille Normandie

  4. 46 Taiwan International Graduate Program 2. Taiwan International Graduate Program Alumni

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    46 Taiwan International Graduate Program 2. Taiwan International Graduate Program Alumni Year of Graduation Program Name Student Name Nationality Current Position 2006 CBMB Rey-Ting Guo Taiwan Research Fellow, Tianjin Institute of Chinese Academy of Sciences, China 2007 MCB Chan-Yen Ou Taiwan Postdoc

  5. WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Wirel. Commun. Mob. Comput. 2006; 6:845864

    E-Print Network [OSTI]

    Zhuang, Weihua

    WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Wirel. Commun. Mob. Comput. 2006; 6:845­864 Published control for wireless mesh networks Ho Ting Cheng, Hai Jiang and Weihua Zhuang*, Department of Electrical and Computer Engineering, Centre for Wireless Communications, University of Waterloo, Waterloo, Ontario, Canada

  6. eShare: A Capacitor-Driven Energy Storage and Sharing Network for Long-Term Operation

    E-Print Network [OSTI]

    Minnesota, University of

    eShare: A Capacitor-Driven Energy Storage and Sharing Network for Long-Term Operation Ting Zhu, Yu it feasible to build distributed energy storage systems that can robustly ex- tend the lifetime of networked by providing designs for energy routers (i.e., energy storage and routing devices) and related energy access

  7. Transitions of Organized Assemblies in Mixed Systems of Cationic Bolaamphiphile and Anionic Conventional Surfactants

    E-Print Network [OSTI]

    Huang, Jianbin

    of the mixed systems. The effects of temperature and salt addition on this transition have also been of additives18,19 or variation of environmental factors, such as temperature,20,21 concentration,22,23 and p Conventional Surfactants Ting Lu, Feng Han, Zichen Li, and Jianbin Huang* State Key Laboratory for Structural

  8. Cellular growth and division in the Gillespie , Dmitri Volfson2,3

    E-Print Network [OSTI]

    Tsimring, Lev S.

    1 Cellular growth and division in the Gillespie algorithm Ting Lu1 , Dmitri Volfson2,3 , Lev of the cellular volume, and demonstrate that a careful rederivation of the Gillespie algorithm is important when all stochastically simulated reactions have rates slower or comparable to the cellular growth rate

  9. JOURNAL DE PHYSIQUE CoZZoque Cl, suppZ6ment au nO1, Tome 42, janvier 1981 page Cl-19

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of the coating processes and materials being used and of potential usefulness i n mid-temperature solar of the degradation modes f o r most of the coating technologies and coa- ting material. 1. 1nZrroduction.- Solar collection and retention t o beeco- nomically feasible. Operational temperature ranges of solar collector

  10. SmartCharge: Cutting the Electricity Bill in Smart Homes with Energy Storage

    E-Print Network [OSTI]

    Kurose, Jim

    SmartCharge: Cutting the Electricity Bill in Smart Homes with Energy Storage Aditya Mishra, David,irwin,shenoy,kurose}@cs.umass.edu Ting Zhu Binghamton University tzhu@binghamton.edu ABSTRACT Market-based electricity pricing provides consumers an op- portunity to lower their electric bill by shifting consump- tion to low price periods

  11. CURRENT SCIENCE, VOL. 109, NO. 10, 25 NOVEMBER 2015 1765 Indian Solar Radiation Atlas is launched

    E-Print Network [OSTI]

    Sharma, Shiv K.

    energy sector in the country. NIWE is a research institute under the Ministry of New and Renewable EnergyMap Project facilitated set- ting up the Solar Radiation Measuring Network and later the development, planners of the state solar parks, investors, and financial institutions involved in renew- able energy

  12. Proceedings of the Workshop on Sentiment Analysis where AI meets Psychology (SAAIP), IJCNLP 2011, page 1, Chiang Mai, Thailand, November 13, 2011.

    E-Print Network [OSTI]

    a gold-standard set of human annotations. But what does `subjectivity' actually mean? What are `opinion the need to specify what the opinion actually applies to, and attempts also to determine the theme. Lately/sentiment than simply matching words and phrases that attach to the theme, and compu- ting a polarity score

  13. IOP PUBLISHING NANOTECHNOLOGY Nanotechnology 18 (2007) 165504 (6pp) doi:10.1088/0957-4484/18/16/165504

    E-Print Network [OSTI]

    2007-01-01

    .1088/0957-4484/18/16/165504 Poly(m-aminobenzene sulfonic acid) functionalized single-walled carbon nanotubes based gas sensor Ting have demonstrated a NH3, NO2 and water vapour sensor based on poly(m-aminobenzene sulfonic acid

  14. The ITRS MPU and SOC System Drivers: Calibration and Implications for Design-Based Equivalent Scaling in the

    E-Print Network [OSTI]

    Kahng, Andrew B.

    Scaling in the Roadmap Wei-Ting Jonas Chan, Andrew B. Kahng, Siddhartha Nath and Ichiro Yamamoto ECE for microprocessor (MPU) and system-on-chip (SOC) in the International Technology Roadmap for Semiconductors [21] (ITRS) determine the roadmap of underlying technology requirements across devices, patterning

  15. eShare: A Capacitor-Driven Energy Storage and Sharing Network for Long-Term Operation

    E-Print Network [OSTI]

    Zhang, Zhi-Li

    Terms Measurement, Design, Performance, Experimentation Keywords Energy, Capacitor, Networks, GreeneShare: A Capacitor-Driven Energy Storage and Sharing Network for Long-Term Operation Ting Zhu, Yu, Twin Cities {tzhu, yugu, tianhe, zhzhang}@cs.umn.edu Abstract The ability to move energy around makes

  16. Short Communication Electricity generation from fermented primary sludge using single-chamber

    E-Print Network [OSTI]

    as power sources using energy derived in situ from marine sediments (Tender et al., 2002 levels of organics, with $66% of the energy content of the wastewater stored in the primary sludge (Ting and extracting energy from sludge to reduce treatment costs. Useful energy can be cap- tured from organic matter

  17. Marios D. Demetriou Adrienne S. Lavine

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    -Co cermet composites are widely used in industry for cut- ting and boring tools and in Developing MMC Coatings: Modeling the Heating of Coated Powder Particles Coated powder particles composed of a ceramic core and a metallic coating are being considered for plasma spray applications. The goal of using

  18. A. Antoniadis Technological Educational Institute of Crete,

    E-Print Network [OSTI]

    Aristomenis, Antoniadis

    performance of the tool. Nev- ertheless, the upper cutting speed limit of HSS, even coated, is up to 100­150 m in cases, where dry cut- ting with coated HSS tools is applied, the selection of the permit- ted cutting utilization of high-speed steel (HSS) as cutting tool material. The limited cutting performance of HSS, even

  19. The Case for Efficient Renewable Energy Management in Smart Binghamton University

    E-Print Network [OSTI]

    Shenoy, Prashant

    The Case for Efficient Renewable Energy Management in Smart Homes Ting Zhu Binghamton University that combines residential TOU pricing models with on-site renewables and modest energy storage to incentivize DG. We propose a system architecture and control algorithm to efficiently manage the renewable energy

  20. Applied Surface Science 263 (2012) 712721 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Mukhopadhyay, Sharmila M.

    2012-01-01

    structures show promise in future applications such as sensors, water purification systems, fuel cell- ties make Pd a very useful element in a wide range of applications such as fuel cell catalysts [14,2]. These properties can enhance their performance as sensors and catalysts for cut- ting edge technologies applicable

  1. Sharing Renewable Energy in Smart Microgrids , Zhichuan Huang

    E-Print Network [OSTI]

    Shenoy, Prashant

    Sharing Renewable Energy in Smart Microgrids Ting Zhu , Zhichuan Huang , Ankur Sharma , Jikui Su § Department of Computer Science, University of Massachusetts Amherst ABSTRACT Renewable energy harvested from the environment is an at- tractive option for providing green energy to homes. Unfor- tunately, the intermittent

  2. Tree Biomass Estimates on Forest Land in California's North Coast Region1

    E-Print Network [OSTI]

    Tree Biomass Estimates on Forest Land in California's North Coast Region1 Tian-Ting Shih2 Tree biomass is one essential component in a forest ecosystem and is getting more attention nowadays due to its sequestration, energy production, and other natural and social resources uses and impacts. A biomass estimator

  3. Supplemental Material ReadMe file: A user's guide for the vitality model with initial Gaussian distribution

    E-Print Network [OSTI]

    Washington at Seattle, University of

    Supplemental Material ReadMe file: A user's guide for the vitality model with initial Gaussian distribution parameter fitting routine and the R functions contained in file vitality.gaussian.R. Ting Li and James J. Anderson University of Washington June 11, 2009 The supplemental R file vitality

  4. Argon diffusion in plagioclase and implications for thermochronometry: A case study from the Bushveld

    E-Print Network [OSTI]

    Shuster, David L.

    terrestrial tectonic set- tings and is widespread in most extraterrestrial material. Applying the K­Ar system in simultaneously acquiring precise geochronologic data and quantifying argon diffusion kinetics from a mineral Ar data and quantifies Ar diffusion kinetics of low-K minerals. We present results of five diffusion

  5. IEEE TRANSACTIONS ON ELECTRON DEVICES, VOL. 52, NO. 6, JUNE 2005 1123 A Novel Current-Scaling a-Si:H TFTs Pixel

    E-Print Network [OSTI]

    Kanicki, Jerzy

    -matrix organic light-emitting dis- plays (AM-OLEDs). In contrast to the conventional current mirror pixel electrode circuit, in this circuit a high data-to-organic light-emitting device (OLED) current ratio can--Active-matrix, active-matrix organic light-emit- ting displays (AM-OLEDs), current driving, current scaling, light

  6. Conditional Spectrum Computation Incorporating Multiple Causal Earthquakes and Ground-Motion Prediction Models

    E-Print Network [OSTI]

    Baker, Jack W.

    Conditional Spectrum Computation Incorporating Multiple Causal Earthquakes and Ground-Motion Prediction Models by Ting Lin, Stephen C. Harmsen, Jack W. Baker, and Nicolas Luco Abstract The conditional uncertainties in all earthquake scenarios and resulting ground motions, as well as the epistemic uncertainties

  7. SU-E-J-39: Comparison of PTV Margins Determined by In-Room Stereoscopic Image Guidance and by On-Board Cone Beam Computed Tomography Technique for Brain Radiotherapy Patients

    SciTech Connect (OSTI)

    Ganesh, T; Paul, S; Munshi, A; Sarkar, B; Krishnankutty, S; Sathya, J; George, S; Jassal, K; Roy, S; Mohanti, B

    2014-06-01

    Purpose: Stereoscopic in room kV image guidance is a faster tool in daily monitoring of patient positioning. Our centre, for the first time in the world, has integrated such a solution from BrainLAB (ExacTrac) with Elekta's volumetric cone beam computed tomography (XVI). Using van Herk's formula, we compared the planning target volume (PTV) margins calculated by both these systems for patients treated with brain radiotherapy. Methods: For a total of 24 patients who received partial or whole brain radiotherapy, verification images were acquired for 524 treatment sessions by XVI and for 334 sessions by ExacTrac out of the total 547 sessions. Systematic and random errors were calculated in cranio-caudal, lateral and antero-posterior directions for both techniques. PTV margins were then determined using van Herk formula. Results: In the cranio-caudal direction, systematic error, random error and the calculated PTV margin were found to be 0.13 cm, 0.12 cm and 0.41 cm with XVI and 0.14 cm, 0.13 cm and 0.44 cm with ExacTrac. The corresponding values in lateral direction were 0.13 cm 0.1 cm and 0.4 cm with XVI and 0.13 cm, 0.12 cm and 0.42 cm with ExacTrac imaging. The same parameters for antero-posterior were for 0.1 cm, 0.11 cm and 0.34 cm with XVI and 0.13 cm, 0.16 cm and 0.43 cm with ExacTrac imaging. The margins estimated with the two imaging modalities were comparable within ± 1 mm limit. Conclusion: Verification of setup errors in the major axes by two independent imaging systems showed the results are comparable and within ± 1 mm. This implies that planar imaging based ExacTrac can yield equal accuracy in setup error determination as the time consuming volumetric imaging which is considered as the gold standard. Accordingly PTV margins estimated by this faster imaging technique can be confidently used in clinical setup.

  8. Analysis results from the Los Alamos 2D/3D program

    SciTech Connect (OSTI)

    Boyack, B.E.; Cappiello, M.W.; Harmony, S.C.; Shire, P.R.; Siebe, D.A.

    1987-01-01

    Los Alamos National Laboratory is a participant in the 2D/3D program. Activities conducted at Los Alamos National Laboratory in support of 2D/3D program goals include analysis support of facility design, construction, and operation; provision of boundary and initial conditions for test-facility operations based on analysis of pressurized water reactors; performance of pretest and posttest predictions and analyses; and use of experimental results to validate and assess the single- and multi-dimensional, nonequilibrium features in the Transient Reactor Analysis Code (TRAC). During fiscal year 1987, Los Alamos conducted analytical assessment activities using data from the Slab Core Test Facility, The Cylindrical Core Test Facility, and the Upper Plenum Test Facility. Finally, Los Alamos continued work to provide TRAC improvements. In this paper, Los Alamos activities during fiscal year 1987 will be summarized; several significant accomplishments will be described in more detail to illustrate the work activities at Los Alamos.

  9. Current algorithms used in reactor safety codes and the impact of future computer development on these algorithms

    SciTech Connect (OSTI)

    Mahaffy, J.H.; Liles, D.R.; Woodruff, S.B.

    1985-01-01

    Computational methods and solution procedures used in the US Nuclear Regulatory Commission's reactor safety systems codes, Transient Reactor Analysis Code (TRAC) and Reactor Leak and Power Safety Excursion Code (RELAP), are reviewed. Methods used in TRAC-PF1/MOD1, including the stability-enhancing two-step (SETS) technique, which permits fast computations by allowing time steps larger than the material Courant stability limit, are described in detail, and the differences from RELAP5/MOD2 are noted. Developments in computing, including parallel and vector processing, and their applicability to nuclear reactor safety codes are described. These developments, coupled with appropriate numerical methods, make detailed faster-than-real-time reactor safety analysis a realistic near-term possibility.

  10. On the explanation and calculation of anomalous reflood hydrodynamics in large PWR cores

    SciTech Connect (OSTI)

    Rodriguez, S.E.

    1985-01-01

    Reflood hydrodynamics from large-scale (1:20) test facilities in Japan have yielded apparently anomalous behavior relative to FLECHT tests. Namely, even at reflooding rates below one inch per second, very large liquid volume fractions (10-15%) exist above the quench fronts shortly after flood begins; thus cladding temperature excursions are terminated early in the reflood phase. This paper discusses an explanation for this behavior: liquid films on the core's unheated rods. The experimental findings are shown to be correctly simulated with a new four-field (vapor, films, droplets) version of the best-estimate TRAC-PF1 computer code, TRAC-FF. These experimental and analytical findings have important implications for PWR large-break LOCA licensing.

  11. Combustion modeling in waste tanks

    SciTech Connect (OSTI)

    Mueller, C.; Unal, C.; Travis, J.R. |

    1997-08-01

    This paper has two objectives. The first one is to repeat previous simulations of release and combustion of flammable gases in tank SY-101 at the Hanford reservation with the recently developed code GASFLOW-II. The GASFLOW-II results are compared with the results obtained with the HMS/TRAC code and show good agreement, especially for non-combustion cases. For combustion GASFLOW-II predicts a steeper pressure rise than HMS/TRAC. The second objective is to describe a so-called induction parameter model which was developed and implemented into GASFLOW-II and reassess previous calculations of Bureau of Mines experiments for hydrogen-air combustion. The pressure time history improves compared with the one-step model, and the time rate of pressure change is much closer to the experimental data.

  12. Fire Ecology Vol. 5, No. 3, 2009 doi: 10.4996/fireecology.0503057

    E-Print Network [OSTI]

    Taylor, Alan

    Fire Ecology Vol. 5, No. 3, 2009 doi: 10.4996/fireecology.0503057 Gill and Taylor: Controls on Fire Regimes along an Elevational Gradient Page 57 ReseaRch aRticle Top-down and boTTom-up conTrols on fire-814-863-7943; e-mail: aht1@psu.edu absTracT Fire is an ecologically significant process in the fire

  13. Comparison of steam-generator liquid holdup and core uncovery in two facilities of differing scale

    SciTech Connect (OSTI)

    Motley, F.; Schultz, R.

    1987-01-01

    This paper reports on Run SB-CL-05, a test similar to Semiscale Run S-UT-8. The test results show that the core was uncovered briefly during the accident and that the rods overheated at certain core locations. Liquid holdup on the upflow side of the steam-generator tubes was observed. After the loop seal cleared, the core refilled and the rods cooled. These behaviors were similar to those observed in the Semiscale run. The Large-Scale Test Facility (LSTF) Run SB-CL-06 is a counterpart test to Semiscale Run S-LH-01. The comparison of the results of both tests shows similar phenomena. The similarity of phenomena in these two facilities build confidence that these results can be expected to occur in a PWR. Similar holdup has now been observed in the 6 tubes of Semiscale and in the 141 tubes of LSTF. It is now more believable that holdup may occur in a full-scale steam generator with 3000 or more tubes. These results confirm the scaling of these phenomena from Semiscale (1/1705) to LSTF (1/48). The TRAC results for SB-CL-05 are in reasonable agreement with the test data. TRAC predicted the core uncovery and resulting rod heatup. The liquid holdup on the upflow side of the steam-generator tubes was also correctly predicted. The clearing of the loop seal allowed core recovery and cooled the overheated rods just as it had in the data. The TRAC analysis results of Run SB-CL-05 are similar to those from Semiscale Run S-UT-8. The ability of the TRAC code to calculate the phenomena equally well in the two experiments of different scales confirms the scalability of the many models in the code that are important in calculating this small break.

  14. Human Resource Management: Employee Compensation Guide 

    E-Print Network [OSTI]

    Fogleman, Sarah L.; McCorkle, Dean

    2009-04-08

    and driving a trac- tor may require similar skills and therefore can be compensated similarly. Job evaluation is another technique that can be used to establish an equitable wage rate. This 3 method is a more systematic and rational ap- proach to internal... on labor - market information and your compensation objectives) Implement your new system, remembering to: 6. Communicate with your employees about - their needs Review your compensation package - regularly to make sure it is fair, equitable...

  15. Generalized drift-flux correlation

    SciTech Connect (OSTI)

    Takeuchi, K.; Young, M.Y.; Hochreiter, L.E. (Westinghouse Electric Corp., Pittsburgh, PA (United States))

    1991-01-01

    A one-dimensional drift-flux model with five conservation equations is frequently employed in major computer codes, such as TRAC-PD2, and in simulator codes. In this method, the relative velocity between liquid and vapor phases, or slip ratio, is given by correlations, rather than by direct solution of the phasic momentum equations, as in the case of the two-fluid model used in TRAC-PF1. The correlations for churn-turbulent bubbly flow and slug flow regimes were given in terms of drift velocities by Zuber and Findlay. For the annular flow regime, the drift velocity correlations were developed by Ishii et al., using interphasic force balances. Another approach is to define the drift velocity so that flooding and liquid hold-up conditions are properly simulated, as reported here. The generalized correlation is used to reanalyze the MB-2 test data for two-phase flow in a large-diameter pipe. The results are applied to the generalized drift flux velocity, whose relationship to the other correlations is discussed. Finally, the generalized drift flux correlation is implemented in TRAC-PD2. Flow reversal from countercurrent to cocurrent flow is computed in small-diameter U-shaped tubes and is compared with the flooding curve.

  16. Results of an emergency response atmospheric dispersion model comparison using a state accepted statistical protocol

    SciTech Connect (OSTI)

    Ciolek, J.T. Jr.

    1993-10-01

    The Rocky Flats Plant, located approximately 26 km northwest of downtown Denver, Colorado, has developed an emergency response atmospheric dispersion model for complex terrain applications. Plant personnel would use the model, known as the Terrain-Responsive Atmospheric Code (TRAC) (Hodgin 1985) to project plume impacts and provide off-site protective action recommendations to the State of Colorado should a hazardous material release occur from the facility. The Colorado Department of Health (CDH) entered into an interagency agreement with the Rocky Flats Plant prime contractor, EG&G Rocky Flats, and the US Department of Energy to evaluate TRAC as an acceptable emergency response tool. After exhaustive research of similar evaluation processes from other emergency response and regulatory organizations, the interagency committee devised a formal acceptance process. The process contains an evaluation protocol (Hodgin and Smith 1992), descriptions of responsibilities, an identified experimental data set to use in the evaluation, and judgment criteria for model acceptance. The evaluation protocol is general enough to allow for different implementations. This paper explains one implementation, shows protocol results for a test case, and presents results of a comparison between versions of TRAC with different wind Field codes: a two dimensional mass consistent code called WINDS (Fosberg et al. 1976) that has been extended to three dimensions, and a fully 3 dimensional mass conserving code called NUATMOS (Ross and Smith 1987, Ross et al. 1988).

  17. Summer Melt A Guide to Investigating and

    E-Print Network [OSTI]

    MMArized in thiS guide froM the bill & MelindA gAteS foundAtion, the WilliAM t. grAnt foundA- tion, the Spencer found And to the bill & MelindA gAteS foundAtion for Supporting itS developMent. the reSeArch on Which thiS guide iS bSeArch And AdMiniStrAtive ASSiStAnce froM cindy floyd, zAck MAbel, AdAM gAnik, AnnA hAgen, jonAthon dAviS, lui

  18. Interstat Issue 11 

    E-Print Network [OSTI]

    1978-01-01

    IN T E R S T A T M a ile d fro m : 1 3 9 2 4 J e f f e r s o n C i r c l e O m aha, N e b r a s k a 6 8 1 3 7 0SSS&&* sl, u *ij \\:.^\\:0::, ,^d ligi:? - -:^p -::* . • .  ' \\^ '. '4^. •r  ? 'v;'' " ' °i i i" T r t O 4 9 < 5 « 3 H 9 r t D...

  19. www.fightbac.o anola oil is

    E-Print Network [OSTI]

    Ca co Th Ca "Canola" c which is Addition Ca he Ca in Th ca Ca m C know? anola oil is ooking oils. he average anola oil is comes fro s another nal Inform anola oil is eart healthy anola oil is n the world. he part of th anola meal anola oil ca many crop va ano the lowest . canola see a good sou m

  20. Testing of hollow clay tile masonry prisms

    SciTech Connect (OSTI)

    Jones, W.D.; Butala, M.B.

    1993-10-15

    This paper presents test results of 610-mm wide (24-in.) by 1219-mm high (48-in.) by 203-or 330-mm (8- or 13-in.) thick prisms constructed of hollow clay tiles. Three prisms were extracted fro existing hollow clay title walls and 69 were constructed in laboratories at The University of Tennessee and the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland. Modulus of Elasticity, E, and compressive strength f{prime}{sub m} were calculated from the results.

  1. Proceedings of the 19th Central Hardwood Forest Conference GTR-NRS-P-142 251 A PReLIMINARy AboveGRoUND LIve bIoMASS MoDeL FoR

    E-Print Network [OSTI]

    GRoUND LIve bIoMASS MoDeL FoR UNDeRSToRy HARDwooDS FRoM ARkANSAS, LoUISIANA, AND MISSISSIPPI Don C. bragg biomass and fuel loads, but few models are available to directly quantify this component. In part to determine diameter at breast height (d.b.h.), so conventional models (e.g., the National Biomass Estimators

  2. -1,4-galactosyltransferase III enhances invasive phenotypes via 1 integrin and predicts poor prognosis in neuroblastoma

    E-Print Network [OSTI]

    Wu, Yih-Min

    -Tarng Jou1 , Dong-Tsamn Lin1,8 , Kai-Hsin Lin1 , Wen-Ming Hsu9,10,* (), Min-Chuan Huang2,10,* () Departments in NB cells. *Min-Chuan Huang (): mchuang-Shiang Hung1,3,5 , Yu-Ting Huang2 , Wei-Chou Lin4 , Hsiu-Chin Huang6 , Po-Huang Lee3 , Jin-Tung Liang3* , Min-Chuan

  3. Culture of selected organisms in recirculating and flow-through systems using thermal effluent 

    E-Print Network [OSTI]

    Berry, Terri Layne

    1978-01-01

    lower in the recircula- ting svst m than in the flow-through system. Decrease in mear length was probably the result of the death of a large oystez rather than an actual decrease in shell length. The meat of oysters opened at the termination... for all species and condition, food conversion and percent efficiency of feed utilization of fish were computed at each sampling period. Polyculture of oysters with fish in the flow- through system did not adversely affect growth or survival...

  4. Thermal and Economic Analyses of Energy Saving by Enclosing Gas Turbine Combustor Section 

    E-Print Network [OSTI]

    Li, X.; Wang, T.; Day, B.

    2006-01-01

    of Energy Saving by Enclosing Gas Turbine Combustor Section Xianchang Li, Ting Wang Benjamin Day ? Research Engineer Professor Engineer Energy Conversion and Conservation Center Venice Natural Gas... a high-temperature area (500~560°F) at the combustor section of the GE Frame 5 gas turbine of Dynegy Gas Processing Plant at Venice, Louisiana. To improve the thermal efficiency and reduce energy cost, thermal and economic analyses are conducted...

  5. Microwave Meals in a Hurry. 

    E-Print Network [OSTI]

    Haggard, Marilyn A.

    1981-01-01

    Bulletin] Microwave Meals in a Hurry Marilyn A. Haggard* r- Mi, Nave ovens are time-savers for many busy Texans. Used at their optimum, they can be both time and energy savers. However, optimum use takes prac tice. Beginners should allow plenty... foods are being defrosted or cooked. Cook foods that require the same temperature set ting together. It makes preparation faster and saves energy. Study the following examples of organization and planning for microwave meals. Breakfast Orange...

  6. Trang chnh Nn coi trang Web

    E-Print Network [OSTI]

    Wenseleers, Tom

    bênh vc quyt nh ca tng thng Berlusconi, ngay c Liên oàn Y S Tòa Thánh cng lên ting tán ng vic các bnh nh cng lâu hn trong óc, mc dù trên nguyên tc, trí nh ca c hai loài này hot ng ging nhau. ó là kt lun bên trái hay bên phi. Mc dù thc hin thí nghim mi loi ch vi 2 con vt nhng các chuyên gia cng cho rng kt

  7. Computer Physics Communications 182 (2011) 10131026 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    2011-01-01

    the statistical method of time series clustering S.K. Lai a,b,, Yu-Ting Lin a , P.J. Hsu a,b , S.A. Cheong c Molecular Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 115 Technological University, SPMS-04-01, 21 Nanyang Link, Singapore 637371, Singapore a r t i c l e i n f o a b

  8. Improving the ATLAS physics potential with the Fast Track Trigger System

    E-Print Network [OSTI]

    Cavaliere, Viviana; The ATLAS collaboration

    2015-01-01

    The ATLAS Fast TracKer (FTK) is a custom electronics system that will operate at the full Level-1 accept rate, 100 kHz, to provide high quality tracks as input to the High-Level Trigger. The event reconstruction is performed in hardware, thanks to the massive parallelism of associative memories (AM) and FPGAs. We present the advantages for the physics goals of the ATLAS experiment and the recent results on the design, technological advancements and testing of some of the core components used in the processor.

  9. Swine as an alternative enterprise: Mixed Soils Area of West Texas 

    E-Print Network [OSTI]

    Masch, William Ray

    1970-01-01

    grain sorghum, preplant irrigation only 87 21. 2. Esti natcd annual irrigated grain s in. ) costs and returns per acre of land for orghum, preplant irrigation only (6 ac. 22. l. Est:imated annual per acre of !and plus three postpl labor, mar...:bine and tracLor for irrigated grain sorghum ant itrigaLions requircmenLs preplan t 22, 2. F. s t i nia t. ed irrigated postplant arinua1 grain s (4 ac. costs and returns per acre orghum, prrplant (6 ac, in. in. ) irrigaLions of land for ) plus...

  10. Various Methods of Electrolytic Mitigation

    E-Print Network [OSTI]

    Ahlborn, George H.

    1912-01-01

    and rails were recorded. On Peach Street (see Figure 3} the double-track trolley See Succeeding Page. 2 3 . —>22—n Yi+Bad Bond O -Hydrant m m m t m m m m Effect of Bad TracK Bonding Fig 3 line crosses 4 steam tracks and two "blocks north the trol... of the slow-speed equipment in stations feeding to the rails and trolleys at extreme ends. The advent of the large- unit steam turbine, high-tension transmission, and im­ proved alternating current motors for driving railway generators are among...

  11. Fuel performance during severe accidents. [PWR

    SciTech Connect (OSTI)

    Buescher, B.J.; Gruen, G.E.; MacDonald, P.E.

    1982-01-01

    As a result of the Three Mile Island Unit-2 (TMI-2) accident, the Nuclear Regulatory Commission has initiated a severe fuel damage test program to evaluate fuel rod and core response during severe accidents similar to TMI-2. This program is underway in the Power Burst Facility at the Idaho National Engineering Laboratory. In preparation for the first test, predictions have been performed using the TRAC-BD1 computer. This paper presents the calculated results showing a slow heatup to 2400 K over 5 hours, and the analysis includes accelerated oxidation of the zirconium cladding at temperatures above 1850 K.

  12. Meteorological conditions during the winter validation study at Rocky Flats, Colorado: An overview

    SciTech Connect (OSTI)

    Hodgin, C.R.

    1991-11-06

    The objective for the Winter Validation Study was to gather field data for validation of the Terrain-Responsive Atmospheric Code (TRAC) under winter time meteorological conditions. Twelve tracer tests were conducted during a two-week period in February 1991. Each test lasted 12 hours, with releases of SF{sub 6} tracer from the Rocky Flats Plant near Golden, Colorado. The tests included ground-based and airborne sampling to 16 km from the release point. This presentation summarizes meteorological conditions during the testing period. Forty six viewgraphs are included.

  13. Precambrian geology of a portion of the Purdy Hill quadrangle, Mason County, Texas 

    E-Print Network [OSTI]

    Mutis-Duplat, Emilio

    1969-01-01

    ) (Head of Department) (Membe r) A ust 1969 ABS TRAC T Precambrian Geology of a Portion of the Purdy Hill Quadrangle, Mason County, Texas. (August 1969) Emilio Mutis-Duplat, Geologist and Geophysicist, Unive re idad Nacional de Colombia; Directed by...'s understanding of the geology of the area. Dr. Robert R. Berg, Head of the Department of Geology, who was a permanent source of encouragement. The members of the Awards Committee of the Department of Geology, for the award that provided financial support...

  14. A Framework to Quantify Network Resilience and Survivability

    E-Print Network [OSTI]

    Jabbar, Abdul

    2010-06-11

    .13 Resilience of AT&T topology to link failures . . . . . . . . . . 112 5.14 Comparing resilience of AT&T, Sprint, and G ´ EANT2 . . . . . 114 5.15 Resilience of topologies generated with KU-LoCGen . . . . . 115 5.16 Resilience of multi-path routing over AT..., the link capacity of a higher layer generates tra?c for the layer below. Due to the multilayer approach, failures in given layer can be guarded against at that layer or at a higher layer. The authors also introduce two methods of survivability analysis...

  15. SunWare Solartechnik GmbH Co KG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren)Model for theSunLan Solar Co Ltd JumpSunRiderSunTrac

  16. SunWize Technologies Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren)Model for theSunLan Solar Co Ltd JumpSunRiderSunTracSunWize

  17. Spatial and temporal patterns of colonization and brood development of IPS avulsus (Eichh.) and I. Calligraphus (Germ.) (Coleoptera:scolytidae) in loblolly pine 

    E-Print Network [OSTI]

    Flamm, Richard Owen

    1984-01-01

    height . 2 Expected times of arrival (Days) of attacking I. au isus, I. ~cai1i a h s. a d D. f ontaiis Tn incnlvlZuaT trees Page 17 3 Expected times (days) of gallery construction by I. a i sue. i. ~col ii a h s, a d D. fro taiis in individual trees.... ) and mixed hardwood species. Four adjacent plots of 3 pine trees each were designated for this study. Average tree height of the sample trees was 21. 4 m (S. D. = Z. 3 m) and average tree diameter at 2 m was Z5. 9 m (S. O. = 2. 8 m). Bark beetle attack...

  18. Development of Safe Methods for Canning Blackeye Peas at Home. 

    E-Print Network [OSTI]

    Crawford, Ellen G.; Sheppard, M. Patricia; Smith, Annie B.; Cover, Sylvia

    1948-01-01

    AGRICULTURAL AND MECHANICAL COLLEGE SYSTEM GIBB GILCHRIST, Chancellor The Cover Picture A load OF pint jars OF blackeye peas is being removed fro111 the canner. Three of the 16 jars were used for ireat penetration tests. The tliermocouple wires were... inserted in the jars by means of tlie flat type stuffing !,ox soldered to the lid. One jar ~\\~itll a tlrern~o- couple attached is on the table, another may be seen in the top layer in tlie canner and the third is in the bottonl layel- of tlie canner...

  19. A comparative study of the mineral content of vitamin containing foods 

    E-Print Network [OSTI]

    Houston, James Maurice

    1936-01-01

    substituted for the spcaified ssmgie, 4, ". 'etsrniantlon nf ?hosphorue by:. epnrntion nn 'ngnesiukc . ', mmniun . hosphste nn4 . sti ?stion of the . hosphnte ns & hosphoi olybdnte Lhls mthod differs fro. " tkint sudkkcnted by yoe in tso ruspucts, 5 i... out, using 85 oc of - in place of ths sui~ostcd ner. i le for the aothnd outline4 hy toe. 11 10 ~ "otrruin~tion of '* nncsium ny . spar. tian es a;"cesium . ~as?, iete and sti! stion of thn, haspi ate as . hosphomrlybdars xcopt far usi, r ' co...

  20. The investigation of the electrodeposition of iron from fluoborate solutions, II 

    E-Print Network [OSTI]

    Ballard, Donnell Ardell

    1953-01-01

    . TY PHENOMENON ~ BAC CLAPTOh'k 'CHAHGE THE WOABP TOLGIEi Oh! HLTTRB . AhghkhROILI 80lhlLTAILDR EDHTIRIBTIGR. ]OHATRITDLTI'PHL'i0hflhOE LIRIIEDGIIKL IORBT llHITOIRn AORERT Dl'101 ". TH?OILOAESAIhk RDMIE RORERMh . CHIAIEIXTSTRTH f0'ihTH6 D ARh'i... c:. (1 i:; - c . !4. i;. ic o ! 'c'. et. ' ct, " ln 1910 I". 'ill ia!s blum et a] (6) roper ted the succes. ful pl, . tin; cf' lose'. fro!-. f;nobody ate aol!!t iona on tho linini s of !, as shells . Ghoopor fluoa i. lice tee had been use j...

  1. Regmi Research Series ,Year 21, January, 1989

    E-Print Network [OSTI]

    Regmi, Mahesh C

    1989-01-01

    ;L Durbar do no~ eppaar to~ke any r;,e.p,~Jrs. - , . " , , (2) " There are but two usu al modes of conveyil;1g goods. ' naDialy, by garis and p"ck-anim:::.ls, tha latter chiefly ponies. TraderS from .British terri toriBS CEr..n ot expect to find means... granted t o the common people (lata­ &l8.~) of Gorkha town . The matte r has been represented t o us . "we hereby order that the Chumewan tax be collected fro~ homesteads and rice-fields in that area at the same rates as t hose s.t which it had been...

  2. Newsfront 21-27 May 2007, Issue 17

    E-Print Network [OSTI]

    Ghimire, Yubaraj

    Alliances (SPA) and Maoists in his recent publication, ‘Shanti Varta: Antarkatha’ (Peace Talk: Insight Story). The book that is based on interviews of the leaders, who had actively played prominent roles in the peace process, is a well researched account... me within a conven- tional framework just because I am a nun and they think a nun should be- have and live in a certain way. Pix by ne ws fro nt 8 21-27 May, 2007 Opinion Perennial Begging? Present problem faced by Nepal on account of oil supply...

  3. Cooking with Applesauce (Spanish) 

    E-Print Network [OSTI]

    Anding, Jenna

    2008-12-09

    papa (rinde 12 panquecitos aproximadamente) Ingredientes ? taza de margarina o mantequilla 1 taza de az?car 1 taza de pur? de manzana fr?o 2 tazas de harina 1 cucharadita de bicarbonato de sodio 1 cucharadita de canela molida ? de cucharadita de clavos... molidos (si gusta) ? taza de nueces picadas (si gusta) ? taza de pasitas Ingredientes 1? tazas de harina para hornear ? de taza de hojuelas de avena (normal o instant?nea) ? taza de az?car morena 1? cucharadita de polvo para hornear...

  4. Outfits - Company F - 19 

    E-Print Network [OSTI]

    Unknown

    2006-01-01

    1977) David Lee Egle, B . S . , Pan American University Chairman of Advisory Committee: L. F. Guseman, Jr. Let (X, d) be a complete metric space and f a selfmap of X. It is shown that various known theorems on the existence of fixed and periodic... points can be proved by using a recent result of Caristi. ACKNOWLEDGMENTS I wish to thank the following people for their assistance and suppor t in wri ting this thesis: Or. L. F. Guseman, Jr. , who provided guidance and greatly assisted...

  5. Current trends in income statements 

    E-Print Network [OSTI]

    Cass, Edwin Childers

    1948-01-01

    years 2 000 000 sy&i~9 Earnings of' prior years transferred to capital stock account. ' 99 dr 124, 4452088 Accumulated. earnings invested in plant facilitlss and added to zorking oaptta1 at ead od' year . ~189 4'14 919 An example of' the second...~the ?clams surplus theory, ?2 . ?& the ?all-inclusive income statement", , = or ths. "historical approach" ~ . And those who favor tbs second belief' are said to accept ths ?eiarning* power approach", oz the "current opera- ?, 5 ting perf'ozmance concept...

  6. The effect of the age of a hen on fertility and hatchability of eggs and on livability and growth of chicks 

    E-Print Network [OSTI]

    Crossland, Aubrey Lee

    1935-01-01

    ' %arran {19~A) nods a detailed study of tbs opinJ one of poul~ 1 Pearl and Surf'aces Fertility and Ha+~g of Eggs Lemon and Kinghoxnex PracticaL Poultry Production 5 Warroxx Ths Influence of Some Factors on the Hatchability of the Hens There cuc... with ogo eben identical matiugs are used The mean hatching record of tbe second ye?I' is else scbstantt?Qy higher than that of tbe first yoga Ream mort?lity rates in case of the ir1mtical a?tinge ou tso mxccessive years differ so widely...

  7. From the Proton Synchroton to the Large Hadron Collider - 50 Years of Nobel Memories in High-Energy Physics

    ScienceCinema (OSTI)

    None

    2011-10-06

    The seminars will be held in the Main Auditorium with transmission to : Council Chamber, IT Auditorium, Prévessin BE Auditorium , Kjell Johnssen Auditorium in Building 30, Room 40-S2-A01, and via webcast. Confirmed Speakers include: Prof. Jack Steinberger, Dr. Guenther Plass, Prof. Emilio Picasso, Dr. Steve Myers, Prof. Carlo Rubbia, Prof. Burton Richter, Dr. Lyndon Evans, Prof. Rolf-Dieter Heuer, Prof. Leon Lederman, Prof. Jim Cronin, Prof. Sheldon Glashow, Prof. Jerome Friedman, Prof. Frank Wilczek, Prof. Martinus Veltman, Prof. Gerardus 't Hooft, Prof. David Gross, Prof. Samuel Ting, Prof. Steven Weinberg (via teleconference) --- Contact: Directorate.Office@cern.ch

  8. Anger camera image generation with microcomputers 

    E-Print Network [OSTI]

    Williams, Karl Morgan

    1988-01-01

    the e pos tron emit ting radionuc lides in conventional, two-din. ensional, lmag ng studies (7). Since gamma-rays in erect with matter 1n a quantit tive manner, t?e task of rhe detection portion of an nstrum. . utation systex; is to qualify... and output functions. It had 32K of memory and a Datum disk controller. The disk drive was a Diablo dual disk drive (1 fixed and I removable) and was capable of handling 2 I/2 megabytes of 23 Monitor Anger Camera Analog Electronics Graphics Monitor...

  9. Determination of Soil Moisture by the Method of Multiple Electrodes. 

    E-Print Network [OSTI]

    McCorkle, W. H.

    1931-01-01

    . M ., M . S ., Veterinarian W . T. HARDY, D . V . M .? Veterinarian F . E . CARROLl., D . V . M ., Veterinarian PLANT PATHOLOGY AND PHYSIOLOGY: HEMI TRY: J . J . TAUBENHAUS, Ph. D .? Chid G . S . FRAPS, Ph . D ., Ch it/ ; S tale Chemist W . N...ting for chan ing conta ?t I - tween the soil ancl the el ?trode._ wa.. develop l . Th method of \\Y n- *Assistant Professor of Physics, A. and M. College of Texas. BULLETIN NO. 426, T EXAS AGRICULTURAL EXPERIMENT STATION ner ( G1) ha. been...

  10. Advances in Energy Reduction in Methanol Plant Design 

    E-Print Network [OSTI]

    Huggins, P. J.; Griffiths, G. W.

    1982-01-01

    Waste heat in the flue gas from the refOrmi~g furnace is recovered by raising and superhe ting steam and for preheating combustion air use by the reforming furnace burners. ' Similarly waste heat in the synthesis gas, lhiCh is suitable for methane... synthesis without f rther process i ng, is recovered by ra ising steam, re heating boiler feedwater and preheating dea rator feedwater. j i Compression: After final cooling the ~ynthesis gas is compressed in a centrifugal compress~r to the methanol...

  11. Evaluation of a probabilistic model for bulk-power system security 

    E-Print Network [OSTI]

    Schmidt, William Aloys

    1970-01-01

    of the uses of reliabil- ity and reliability studies as related to a single device are: the determination of a guarantee period, to induce research to improve the device, to give the user con. fidence in the device, and to provide the user a basis... for establishing a maintenance schedule. Studies in reliability have been related to simple oevices, con- sisting of a single component, and to very complicated devices, consi =ting of many components. As syste. . s become more complex so does the determination...

  12. Regional Production Economics for Ethylene and Propylene Derivatives 

    E-Print Network [OSTI]

    McCormack, G.; Pavone, T.

    1990-01-01

    copolymer (PP-BC) * Acrylonit~ile (ACN) * P~opylene glycol (PG) * Cumene (CUM) * 2-Ethylhexanol (2EH) * Isop~opyl alcohol (IPA) 59 TECHNOLOGY ALTERNATIVES Most of the olefin derivatives c~r be made using a variety of processes and sla~ting materlals... * PG- Dow chlo~ohydrin * CUM- benzene alkylation * 2-EH- Union Carbide rhodium * IPA- Deutsche Texaco direct hydration REPRESENTATIVE CAPACITY One requirement fo~ establishing ESL-IE-90-06-10 Proceedings from the 12th National Industrial Energy...

  13. STAG UK Newsletter Issue 36 

    E-Print Network [OSTI]

    1979-01-01

    Shatner, De Forest Ke11ey, James Doohan, George Takei, Susan Sabk,tt, Grace Lee Whitney, Rupert mVans, Sonni Cooper, Anne HoCaffrey, Anne Page. DUES U.K. ?2 per year; mur9~e, ?2.50 surface, ?3 airmail letter rate U.S.A. ~8.00 (?3.50) airmail... ~Ialster, Amran Vance, Gillian Catehpole, Ann Flagg, Phyllis Gregory and Steven Green. If you are Vlri ting to us it's easy enough to stick a f(m used stamps in, and it Houldn' t eost you anything extra to do it ??? and used stamps are valuable. See page...

  14. Sound surroundings: Programs seek healthy environment for state's rivers, bays 

    E-Print Network [OSTI]

    Wythe, Kathy

    2009-01-01

    permit specifically for instream flows. Based on 2003 legislation, however, the com- mission may approve an application to amend an existing permit for environmental flows, said Kellye Rila, TCEQ?s water rights permit- ting and availability section... to protecting its waters. ?A lot of people are under the impression in Texas when they look at the landscape and see healthy rivers and streams that there is not cause for concern,? said Cindy Loeffler, TPWD?s water resources branch manager. ?But in 2002...

  15. Estimation of the urban household demand for water in the United States 

    E-Print Network [OSTI]

    Foster, Henry Sessam

    1977-01-01

    Htctec FIi3iiary Academy Chai:man of Advisory Commi. t Lee: Br. iiruce R. B' aItie This research was rnndertai~en to specify;. nd estimat? model rc- 1- ting household demand lor urban water i. o its principal dcLcrImLnun Ls. Feud specif ic objectives... were ustabldshed to guide the analysis: To postulaLo; n srpropriaLc:-c nomic demand mcdcl for house- ho]ds uh To estimate. pam motors of *hc model based. on pcoi cd data re?resent' ng uli. of the U. H, '3. To csc-blish cL ULor:a for a. breawdcwn...

  16. Two Methods of Growing Onions. 

    E-Print Network [OSTI]

    Pittuck, B. C.; McHenry, S. A.

    1901-01-01

    per acre of $53.86. 2. FIoise Cziliure, seecl plantecl in beds ancl transpla 30"x4+", made a net irofit per acre of $58.95. 3. Hand Cultu~e, seed planted in field, rows 14"x-r,;,', macle a nc- profit per acre of $80.44. GROVCTI KG AKD 31s KIU 1...BULLETIN NO. 60. TlvO METHODS RO\\4TING ONIONS. X POETOFFICE: COLIJEGE STATION, BRAZOS COUI I -- A ITSTIS. TEXAS: VON ROECKYAKN, PCHI'IZE Pi CO.. STATE CON'lni\\~~r)nh. 15101. 1'191 (AS AGRICULTURAL EXPtHIMtN I STATIONS. OFFICERS...

  17. A study of the catalytic conversion of synthesis gas to low molecular weight hydrocarbons 

    E-Print Network [OSTI]

    Chan, Ting Yee

    1981-01-01

    A STUDY 0F THE CA'ALYTIC CONVERSION OF SYNTHESIS GAS TO LON NOIECULAR WEIGHT HYDROCARBONS A Thesis by TIN G YEE CHAN Submitted to the Graduate College of exas ARE University in partial fulf illment of the requirement f or the degree... of NASTER OF SCIENCE August 1981 Nejor Subject: Chemical Engineering A STUDY OF CATALYTIC CONVERSION OF SYNTHESIS GAS TO LOW MOLECULAR WEIGHT HYDROCARBONS A Thesis TING YEE CHAN Approved as to style and content by hairman o ommit ee Member ember...

  18. Analysis results from the Los Alamos 2D/3D program

    SciTech Connect (OSTI)

    Boyack, B.E.; Cappiello, M.W.; Stumpf, H.; Shire, P.; Gilbert, J.; Hedstrom, J.

    1986-01-01

    Los Alamos National Laboratory is a participant in the 2D/3D program. Activities conducted at Los Alamos National Laboratory in support of 2D/3D program goals include analysis support of facility design, construction, and operation; provision of boundary and initial conditions for test facility operations based on analysis of pressurized water reactors; performance of pretest and posttest predictions and analyses; and use of experimental results to validate and assess the single- and multidimensional nonequilibrium features in the Transient Reactor Analysis Code (TRAC). During Fiscal Year 1986, Los Alamos conducted analytical assessment activities using data from the Cylindrical Core Test Facility and the Slab Core Test Facility. Los Alamos also continued to provide support analysis for the planning of Upper Plenum Test Facility experiments. Finally, Los Alamos either completed or is currently working on three areas of TRAC modeling improvement. In this paper, Los Alamos activities during Fiscal Year 1986 are summarized; several significant accomplishments are described in more detail to illustrate the work activities at Los Alamos.

  19. Spent fuel pool analysis using TRACE code

    SciTech Connect (OSTI)

    Sanchez-Saez, F.; Carlos, S.; Villanueva, J. F.; Martorell, S.

    2012-07-01

    The storage requirements of Spent Fuel Pools have been analyzed with the purpose to increase their rack capacities. In the past, the thermal limits have been mainly evaluated with conservative codes developed for this purpose, although some works can be found in which a best estimate code is used. The use of best estimate codes is interesting as they provide more realistic calculations and they have the capability of analyzing a wide range of transients that could affect the Spent Fuel Pool. Two of the most representative thermal-hydraulic codes are RELAP-5 and TRAC. Nowadays, TRACE code is being developed to make use of the more favorable characteristics of RELAP-5 and TRAC codes. Among the components coded in TRACE that can be used to construct the model, it is interesting to use the VESSEL component, which has the capacity of reproducing three dimensional phenomena. In this work, a thermal-hydraulic model of the Maine Yankee spent fuel pool using the TRACE code is developed. Such model has been used to perform a licensing calculation and the results obtained have been compared with experimental measurements made at the pool, showing a good agreement between the calculations predicted by TRACE and the experimental data. (authors)

  20. Big Thinking: The Power of Nanoscience (LBNL Science at the Theater)

    SciTech Connect (OSTI)

    Milliron, Delia; Sanili, Babak; Weber-Bargioni, Alex; Xu, Ting

    2011-06-06

    Science at the Theater, June 6th, 2011: Berkeley Lab scientists reveal how nanoscience will bring us cleaner energy, faster computers, and improved medicine. Alex Weber-Bargioni: How can we see things at the nanoscale? Alex is pioneering new methods that provide unprecedented insight into nanoscale materials and molecular interactions. The goal is to create rules for building nanoscale materials. Babak Sanii: Nature is an expert at making nanoscale devices such as proteins. Babak is developing ways to see these biological widgets, which could help scientists develop synthetic devices that mimic the best that nature has to offer. Ting Xu: How are we going to make nanoscale devices? A future in which materials and devices are able to assemble themselves may not be that far down the road. Ting is finding ways to induce a wide range of nanoscopic building blocks to assemble into complex structures. Delia Milliron: The dividends of nanoscience could reshape the way we live, from smart windows and solar cells to artificial photosynthesis and improved medical diagnosis. Delia is at the forefront of converting fundamental research into nanotechnology. Moderated by Jim DeYoreo, interim director of the Molecular Foundry, a facility located at Berkeley Lab where scientists from around the world address the myriad challenges in nanoscience.

  1. Interfacing systems loss-of-coolant accident in Oconee-1 pressurized water reactor

    SciTech Connect (OSTI)

    Nassersharif, B.

    1984-01-01

    The primary system of a pressurized water reactor (PWR) operates at a relatively high pressure (15.5 MPa, 2250 psia) and consists of piping and components designed to withstand these pressures. The low-pressure-injection system (LPIS) connects to the primary system but possesses low-pressure piping passing outside the containment. Therefore, a potential exists for a loss-of-coolant accident (LOCA) outside the containment and concurrent damage to systems needed to cope with this problem. The emergency core-cooling system (ECCS) is assumed to be available for this event. A set of calculations were performed using the TRAC-PF1 code and a model of the Oconee-1 PWR to investigate the consequences of, and possible operator actions for, such an accident scenario.

  2. Considerations for realistic ECCS evaluation methodology for LWRs

    SciTech Connect (OSTI)

    Rohatgi, U.S.; Saha, P.; Chexal, V.K.

    1985-01-01

    This paper identifies the various phenomena which govern the course of large and small break LOCAs in LWRs, and affect the key parameters such as Peak Clad Temperature (PCT) and timing of the end of blowdown, beginning of reflood, PCT, and complete quench. A review of the best-estimate models and correlations for these phenomena in the current literature has been presented. Finally, a set of models have been recommended which may be incorporated in a present best-estimate code such as TRAC or RELAP5 in order to develop a realistic ECCS evaluation methodology for future LWRs and have also been compared with the requirements of current ECCS evaluation methodology as outlined in Appendix K of 10CFR50. 58 refs.

  3. Los Alamos Nuclear Plant Analyzer: an interactive power-plant simulation program

    SciTech Connect (OSTI)

    Steinke, R.; Booker, C.; Giguere, P.; Liles, D.R.; Mahaffy, J.H.; Turner, M.R.

    1984-01-01

    The Nuclear Plant Analyzer (NPA) is a computer-software interface for executing the TRAC or RELAP5 power-plant systems codes. The NPA is designed to use advanced supercomputers, long-distance data communications, and a remote workstation terminal with interactive computer graphics to analyze power-plant thermal-hydraulic behavior. The NPA interface simplifies the running of these codes through automated procedures and dialog interaction. User understanding of simulated-plant behavior is enhanced through graphics displays of calculational results. These results are displayed concurrently with the calculation. The user has the capability to override the plant's modeled control system with hardware-adjustment commands. This gives the NPA the utility of a simulator, and at the same time, the accuracy of an advanced, best-estimate, power-plant systems code for plant operation and safety analysis.

  4. Blowdown heat transfer separate-effects program. Quarterly progress report, January-March 1980

    SciTech Connect (OSTI)

    Craddick, W.G.; Anklam, T.M.; Bohanan, R.E.; Felde, D.K.; Flanders, R.M.; Hagar, R.C.; Hyman, C.R.; Mailen, G.S.; Mullins, C.B.; Ott, L.J.

    1980-06-01

    Six additional bundle uncovery/recovery tests were performed in the Thermal-Hydraulic Test Facility during January, bringing the total number of these tests to eight. Data taken during the tests were found to be contaminated by numerous spurious spikes. Work to remove the spurious spikes is under way. Posttest analysis of the tests is approx.20% completed. The recovery portion of one of the tests will be analyzed by COBRA/TRAC, currently being developed by Pacific Northwest Laboratories (PNL). Work to debug the code for this application is in progress at PNL. The uncovery/recovery tests apparently caused damage to the 0-rings that form part of the loop pressure boundary. Refurbishment of the 0-ring seal system is being performed concurrently with scheduled loop modifications that include installation of ten in-bundle differential pressure instruments. Design, procurement, and fabrication of the in-bundle gamma densitometer system are continuing on schedule.

  5. Design of a Hardware Track Finder (Fast Tracker) for the ATLAS Trigger

    E-Print Network [OSTI]

    Cavaliere, Viviana; The ATLAS collaboration

    2015-01-01

    The use of tracking information at the trigger level in the LHC Run II period is crucial for the trigger an data acquisition (TDAQ) system and will be even more so as contemporary collisions that occur at every bunch crossing will increase in Run III. The Fast TracKer (FTK) is part of the ATLAS trigger upgrade project; it is a hardware processor that will provide every Level-1 accepted event (100 kHz) and within 100$\\mu$s, full tracking information for tracks with momentum as low as 1 GeV. Providing fast, extensive access to tracking information, with resolution comparable to the offline reconstruction, FTK will help in precise detection of the primary and secondary vertices to ensure robust selections and improve the trigger performance.

  6. An analysis of Twitter messages in the 2011 Tohoku Earthquake

    E-Print Network [OSTI]

    Doan, Son; Collier, Nigel

    2011-01-01

    Social media such as Facebook and Twitter have proven to be a useful resource to understand public opinion towards real world events. In this paper, we investigate over 1.5 million Twitter messages (tweets) for the period 9th March 2011 to 31st May 2011 in order to track awareness and anxiety levels in the Tokyo metropolitan district to the 2011 Tohoku Earthquake and subsequent tsunami and nuclear emergencies. These three events were tracked using both English and Japanese tweets. Preliminary results indicated: 1) close correspondence between Twitter data and earthquake events, 2) strong correlation between English and Japanese tweets on the same events, 3) tweets in the native language play an important roles in early warning, 4) tweets showed how quickly Japanese people's anxiety returned to normal levels after the earthquake event. Several distinctions between English and Japanese tweets on earthquake events are also discussed. The results suggest that Twitter data can be used as a useful resource for trac...

  7. Severe fuel-damage scoping test performance. [PWR

    SciTech Connect (OSTI)

    Gruen, G.E.; Buescher, B.J.

    1983-01-01

    As a result of the Three Mile Island Unit-2 (TMI-2) accident, the Nuclear Regulatory Commission has initiated a severe fuel damage test program to evaluate fuel rod and core response during severe accidents similar to TMI-2. The first test of Phase I of this series has been successfully completed in the Power Burst Facility at the Idaho National Engineering Laboratory. Following the first test, calculations were performed using the TRAC-BD1 computer code with actual experimental boundary conditions. This paper discusses the test conduct and performance and presents the calculated and measured test bundle results. The test resulted in a slow heatup to 2000 K over about 4 h, with an accelerated reaction of the zirconium cladding at temperatures above 1600 K in the lower part or the bundle and 2000 K in the upper portion of the bundle.

  8. Advances in exposure and toxicity assessment of particulate matter: An overview of presentations at the 2009 Toxicology and Risk Assessment Conference

    SciTech Connect (OSTI)

    Gunasekar, Palur G.; Stanek, Lindsay W.

    2011-07-15

    The 2009 Toxicology and Risk Assessment Conference (TRAC) session on 'Advances in Exposure and Toxicity Assessment of Particulate Matter' was held in April 2009 in West Chester, OH. The goal of this session was to bring together toxicology, geology and risk assessment experts from the Department of Defense and academia to examine issues in exposure assessment and report on recent epidemiological findings of health effects associated with particulate matter (PM) exposure. Important aspects of PM exposure research are to detect and monitor low levels of PM with various chemical compositions and to assess the health risks associated with these exposures. As part of the overall theme, some presenters discussed collection methods for sand and dust from Iraqi and Afghanistan regions, health issues among deployed personnel, and future directions for risk assessment research among these populations. The remaining speakers focused on the toxicity of ultrafine PM and the characterization of aerosols generated during ballistic impacts of tungsten heavy alloys.

  9. Timing analysis of PWR fuel pin failures

    SciTech Connect (OSTI)

    Jones, K.R.; Wade, N.L.; Katsma, K.R.; Siefken, L.J. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Straka, M. (Halliburton NUS, Idaho Falls, ID (United States))

    1992-09-01

    This report discusses research conducted to develop and demonstrate a methodology for calculation of the time interval between receipt of the containment isolation signals and the first fuel pin failure for loss-of-coolant accidents (LOCAs). Demonstration calculations were performed for a Babcock and Wilcox (B W) design (Oconee) and a Westinghouse (W) four-loop design (Seabrook). Sensitivity studies were performed to assess the impacts of fuel pin burnup, axial peaking factor, break size, emergency core cooling system availability, and main coolant pump trip on these times. The analysis was performed using the following codes: FRAPCON-2, for the calculation of steady-state fuel behavior; SCDAP/RELAP5/MOD3 and TRACPF1/MOD1, for the calculation of the transient thermal-hydraulic conditions in the reactor system; and FRAP-T6, for the calculation of transient fuel behavior. In addition to the calculation of fuel pin failure timing, this analysis provides a comparison of the predicted results of SCDAP/RELAP5/MOD3 and TRAC-PF1/MOD1 for large-break LOCA analysis. Using SCDAP/RELAP5/MOD3 thermal-hydraulic data, the shortest time intervals calculated between initiation of containment isolation and fuel pin failure are 10.4 seconds and 19.1 seconds for the B W and W plants, respectively. Using data generated by TRAC-PF1/MOD1, the shortest intervals are 10.3 seconds and 29.1 seconds for the B W and W plants, respectively. These intervals are for a double-ended, offset-shear, cold leg break, using the technical specification maximum peaking factor and applied to fuel with maximum design burnup. Using peaking factors commensurate with actual burnups would result in longer intervals for both reactor designs. This document provides appendices K and L of this report which provide plots for the timing analysis of PWR fuel pin failures for Oconee and Seabrook respectively.

  10. Timing analysis of PWR fuel pin failures

    SciTech Connect (OSTI)

    Jones, K.R.; Wade, N.L.; Katsma, K.R.; Siefken, L.J. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Straka, M. (Halliburton NUS, Idaho Falls, ID (United States))

    1992-09-01

    Research has been conducted to develop and demonstrate a methodology for calculation of the time interval between receipt of the containment isolation signals and the first fuel pin failure for loss-of-coolant accidents (LOCAs). Demonstration calculations were performed for a Babcock and Wilcox (B W) design (Oconee) and a Westinghouse (W) four-loop design (Seabrook). Sensitivity studies were performed to assess the impacts of fuel pin bumup, axial peaking factor, break size, emergency core cooling system availability, and main coolant pump trip on these times. The analysis was performed using the following codes: FRAPCON-2, for the calculation of steady-state fuel behavior; SCDAP/RELAP5/MOD3 and TRACPF1/MOD1, for the calculation of the transient thermal-hydraulic conditions in the reactor system; and FRAP-T6, for the calculation of transient fuel behavior. In addition to the calculation of fuel pin failure timing, this analysis provides a comparison of the predicted results of SCDAP/RELAP5/MOD3 and TRAC-PFL/MOD1 for large-break LOCA analysis. Using SCDAP/RELAP5/MOD3 thermal-hydraulic data, the shortest time intervals calculated between initiation of containment isolation and fuel pin failure are 10.4 seconds and 19.1 seconds for the B W and W plants, respectively. Using data generated by TRAC-PF1/MOD1, the shortest intervals are 10.3 seconds and 29.1 seconds for the B W and W plants, respectively. These intervals are for a double-ended, offset-shear, cold leg break, using the technical specification maximum peaking factor and applied to fuel with maximum design bumup. Using peaking factors commensurate widi actual bumups would result in longer intervals for both reactor designs. This document also contains appendices A through J of this report.

  11. Hanford tank initiative vehicle/based waste retrieval demonstration report phase II, track 2

    SciTech Connect (OSTI)

    Berglin, E.J.

    1997-07-31

    Using the versatile TracPUMpTm, Environmental Specialties Group, LLC (ES) performed a successful Phase 11 demonstration of a Vehicle- Based Waste Retrieval System (VWRS) for removal of waste material and residual liquid found in the Hanford Underground Storage Tanks (ousts). The purpose of this demonstration was to address issues pertaining to the use of a VWRS in OUSTS. The demonstration also revealed the waste removal capabilities of the TracPumpTm and the most effective techniques and equipment to safely and effectively remove waste simulants. ES successfully addressed the following primary issues: I . Dislodge and convey the waste forms present in the Hanford OUSTS; 2. Access the UST through tank openings as small as twenty-four inches in diameter; 3. Traverse a variety of terrains including slopes, sludges, rocks and hard, slippery surfaces without becoming mired; 4. Dislodge and convey waste within the confinement of the Decontamination Containment Capture Vessel (DCCV) and with minimal personnel exposure; 5. Decontaminate equipment to acceptable limits during retrieval from the UST; 6. Perform any required maintenance within the confinement of the DCCV; and 7. Maintain contaminate levels ``as low as reasonably achievable`` (ALARA) within the DCCV due to its crevice and comer-free design. The following materials were used to simulate the physical characteristics of wastes found in Hanford`s OUSTS: (1) Hardpan: a clay-type material that has high shear strength; (2) Saltcake: a fertilizer-based material that has high compressive strength; and (3) Wet Sludge.- a sticky, peanut- butter- like material with low shear strength. Four test beds were constructed of plywood and filled with a different simulant to a depth of eight to ten inches. Three of the test beds were of homogenous simulant material, while the fourth bed consisted of a mixture of all three simulant types.

  12. Enhancing Multi-Agent Based Simulation with Human-Agents Interactive Spatial Behaviour

    E-Print Network [OSTI]

    Chen, Yee Ming; Shiu, Hung-Ming

    2009-01-01

    We are exploring the enhancement of models of agent behaviour with more "human-like" decision making strategies than are presently available. Our motivation is to developed with a view to as the decision analysis and support for electric taxi company under the mission of energy saving and reduction of CO2, in particular car-pool and car-sharing management policies. In order to achieve the object of decision analysis for user, we provide a human-agents interactive spatial behaviour to support user making decision real time. We adopt passenger average waiting time and electric taxi average idle time as the performance measures and decision support fro electric taxi company. Finally, according to the analysis result, we demonstrate that our multi-agent simulation and GUI can help users or companies quickly make a quality and accurate decision to reduce the decision-making cost and time.

  13. TrekISM Issue 61 

    E-Print Network [OSTI]

    1989-01-01

    , Dearborn MI July 8-9, Radisson South Hotel, Minneap9lis MN (will be at both cons both days) *for ticket & hotel information for Creationcons, write to: 145 Jericho Trunpike, Mineola NY 11501; ph (516) SHOWMAN 7 '(ou. Kr"!l G~16 fIND GEaR~ Coulel Do l3...?ITtlt liRtI lifE: a.,88E~ 1N.sT'Mt. Ttf6t*'SIWlItU.IlsnfotD~ ~c5rO To u.. Bool(,AIt,SrCoul.:lc;&T THf;m. Nor 7?~u.~rO"'}r WORK IN SpRee :t/VI F~omI{"'NS~S?? II OKAY 11L.R?Ftf1'(lKNOkJ'KtAAIs FRo~~~B/AJ QUJRlds mom I(fllVSttS lIND MRTfxpLlfINS A...

  14. Planar velocity analysis of diesel spray shadow images

    E-Print Network [OSTI]

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

    2012-01-01

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

  15. Geology of the Squaw Creek-Marshall Creek area, Mason County, Texas 

    E-Print Network [OSTI]

    Woolsey, Isaac Wayne

    1958-01-01

    'are included in this zeport, . Flavn ('19~+)y throu~+. a stud+ of cores and cuttings of subsurface t ~ m+ae a subd~sion of the baaement. in Texas nnd scuth-" east 1Yei 3texico? 3n thte cubd&vioion, the Texas craton ig ynyposed to be...~ 9zx. thh WmnsMizom -me~ . M ?, :--= ? eozxL'hag=-te-~ (194$z- pz 3$&}. ~ites zzay-vmckvs. hx~~neret- == - =--- I tic soMiug, aud. (3): dsvolopx?ent b9L'difforsntial fLLsion. wi3, 8on'favorej9 , t9LS. idea that, the aollc x'seulb8d, fro'm Jx...

  16. MFISH Measurements of Chromosomal Aberrations Individuals Exposed in Utero to Gamma-ray Doses from 5 to 20 cGy

    SciTech Connect (OSTI)

    Brenner, David J.

    2009-11-17

    Our plan was to identify and obtain blood from 36 individuals from the Mayak-in-utero exposed cohort who were exposed in utero only to gamma ray does doses fro 5 to 20 cGy. Our goal is to do mFISH and in a new development, single-arm mFISH on these samples to measure stable chromosome aberrations in these now adult individuals. The results were compared with matched control individuals (same age, same gender) available from the large control population which we are studying in the context of our plutonium worker study. The long term goal was to assess the results both in terms of the sensitivity of the developing embryo/fetus to low doses of ionizing radiation, and in terms of different potential mechanisms (expanded clonal origin vs. induced instability) for an increased risk.

  17. The undrained strength – liquidity index relationship

    E-Print Network [OSTI]

    Vardanega, P. J.; Haigh, S. K.

    2014-04-14

    of 0.21. Locat & Demers (1988) suggested equation (4) for computing strengths at high liquidity indices. This equation was said to be valid for the range 1.5 < IL < 6.0. ? ? ??.????? ??.?? kPa 1.5 < IL < 6.0 (4) For comparative purposes... : 1 Equation 28 from implies a strength at liquid limit of 1.38 kPa as it pertains to the use of a 60g 60o cone Page 13 of 40 Ca n. G eo te ch . J . D ow nl oa de d fro m w w w .n rc re se ar ch pr es s.c om b y N A ZA RE TH C O LL EG E O F...

  18. Restoration of Democracy and People’s Empowerment in Nepal

    E-Print Network [OSTI]

    Pyakuryal, Kailash N.

    2000-01-01

    of thought Hnd a<.:tiOll, access to informC1tion to develop UIU;'S potential and ability to carn a living. 20 Occtls;omd IltlfJl!r K. N. PJ'rtkurJ'fll 21 were expected 10 become th~ role lIlodels 10 thl: society as the) had preached ideals and politi... and human resource development at national and cOllllllunity level. REFEREN<;:ES Acharva. D.P.. & Bartlett. A. Cr. (1991). Implell/entation oj Call/Ill/miry . Fo/"es1J:1' Through IIser Crollps Exp~ri~ncc fro111 Naa Ko Thulo Ban in Kavcr Palanchok District...

  19. Development and pilot testing of modular dynamic thermomechanical pulp mill model to develop energy reduction strategies. Final report

    SciTech Connect (OSTI)

    Coffin, D.W.

    1996-10-01

    With the development of on-line and real-time process simulations, one obtains the ability to predict and control the process; thus, the opportunity exists to improve energy efficiency, decrease materials wastes, and maintain product quality. Developing this capability was the objective of the this research program. A thermomechanical pulp mill was simulated using both a first principles model and a neural network. The models made use of actual process data and a model that calculated the mass and energy balance of the mill was successfully implemented and run at the mill on an hourly basis. The attempt to develop a model that accurately predicted the quality of the pulp was not successful. It was concluded that the key fro a successful implementation of a real-time control model, such as a neural net model, is availability of on-line sensors that sufficiently characterize the pulp.

  20. Modeling downwind hazards after an accidental release of chlorine trifluoride

    SciTech Connect (OSTI)

    Lombardi, D.A.; Cheng, Meng-Dawn

    1996-05-01

    A module simulating ClF{sub 3} chemical reactions with water vapor and thermodynamic processes in the atmosphere after an accidental release has been developed. This module was liked to the HGSYSTEM. Initial model runs simulate the rapid formation of HF and ClO{sub 2} after an atmospheric release of ClF{sub 3}. At distances beyond the first several meters from the release point, HF and ClO{sub 2} concentrations pose a greater threat to human health than do ClF{sub 3} concentrations. For most of the simulations, ClF{sub 3} concentrations rapidly fall below the IDLH. Fro releases occurring in ambient conditions with low relative humidity and/or ambient temperature, ClF{sub 3} concentrations exceed the IDLH up to almost 500 m. The performance of this model needs to be determined for potential release scenarios that will be considered. These release scenarios are currently being developed.

  1. Momentum, Heat, and Neutral Mass Transport in Convective Atmospheric Pressure Plasma-Liquid Systems and Implications for Aqueous Targets

    E-Print Network [OSTI]

    Lindsay, Alexander; Slikboer, Elmar; Shannon, Steven; Graves, David

    2015-01-01

    There is a growing interest in the study of plasma-liquid interactions with application to biomedicine, chemical disinfection, agriculture, and other fields. This work models the momentum, heat, and neutral species mass transfer between gas and aqueous phases in the context of a streamer discharge; the qualitative conclusions are generally applicable to plasma-liquid systems. The problem domain is discretized using the finite element method. The most interesting and relevant model result for application purposes is the steep gradients in reactive species at the interface. At the center of where the reactive gas stream impinges on the water surface, the aqueous concentrations of OH and ONOOH decrease by roughly 9 and 4 orders of magnitude respectively within 50 $\\mu$m of the interface. Recognizing the limited penetration of reactive plasma species into the aqueous phase is critical to discussions about the therapeutic mechanisms for direct plasma treatment of biological solutions. Other interesting results fro...

  2. Pathogenic variation and morphological studies of Macrophomina phaseolina (Tassi) Goid 

    E-Print Network [OSTI]

    Diourte, Mamourou

    1987-01-01

    . 00g). 0 Ii, th g t p ntag c y af ti. Oh iin from nonlesion areas than lesion areas {Table 4 and b). The single exception was for the sorghum isolate (lg(P16) on sorghum (Table 4). Tabl 4, P t g fetofey f~hho i gh se li f o splhtfootsof~shb l... atesa Cultivars Control MPT MPR MPC TX 7000 R9188 CSM63 1. 2' 1. 3 3. 0 1. 0 1. 4 4. 4 1. 8 I. g 7. 3 1. 1 1. 0 4. 4 MPT= ~dh i Rh 9 oil ~ a is 1 t d f hlti TRT000 Mpt= ~hh 1 Rh ofi 1 t d fro c itis tsM63 MPR= ~hho i ~hs oil 1 1 t d f lti...

  3. An investigation of adaptability to physical and mental stress utilizing heart rate analysis 

    E-Print Network [OSTI]

    Berngen, Frank Edmund

    1968-01-01

    &)r Xl)e c, r ?Lro&lc:-. 4o kc c;) tj)c&r. s?c;):& d ):i?c) cxc'rci. sc: (1':i. ci?. e 1), 3'hc v. . i) e& fro c ti:? el?ctroie" w )rc %ice? co))))sc;;ad) to a s. ). a3 1. !LZ:&I tc. l &:n?ter I?&. trcu)sr))ittc. ") xude3. ; ". -33'6 -1:2 &v) i:h h&n t... sl rc&igh& v. '. &ilc doin? t!&is ex . ! cr&(c . Rea&ly, cx(. . I'!1'. ;. . (u}j& 3. ; u}&, 2;. . . u?, ]0)", '} rc&pare for s! t-'. ;Is. Rc31 over o;1 your hncl. v&itll yo!r fe&'l agc. i!'= 4 t]u" o?tjj v(. 1 ' e&j'!& yc!&r ilal. &: 3;!s}&&'(1 he...

  4. The use of the photo-electric cell in the determination of ammonia 

    E-Print Network [OSTI]

    Adams, Leon Milton

    1934-01-01

    ', hc li;ht c &cree . , &nsistcd ~f a six imlt flashj. ippt bulb . . mmtcd in a s:v ll ro looter in such v runner as to focus o naxisLu:i aiount of li', ht Un tt?: en4 of thc oolcu tubs~ hc color "ubcs used ' ore l0 ofhce y M QB ~ ~, '0 etio y... and 40 c . ~ in length hoss tubas acro, )noketed polari soopc tub~e havir; a bo c of: ! am. The tubs was a fixe4 distsnoe fro. . ~ the sell sod ias supportod in such a manner sc to bc in tho ssme position t all ti. ws . he photo electric soll used uas...

  5. Quasiparticle resonant states induced by a unitary impurity in a d-wave superconductor 

    E-Print Network [OSTI]

    Zhu, JX; Lee, TK; Ting, CS; Hu, Chia-Ren.

    2000-01-01

    ~LDOS! is then evaluated according to r i~E !522( n @ uu inu2 f 8~En2E !1uv inu2 f 8~En1E !# , ~7! where a factor 2 arises from the spin sum, and f 8(E) [d f (E)/dE . The LDOS r i(E) is proportional to the local differential tunneling conductance... nonmag- 7 A.V. Balatsky, M.I. Salkola, and A. Rosengren, Phys. Rev. B 51, 15 547 ~1995!; A.V. Balatsky and M.I. Salkola, Phys. Rev. Lett. 76, 2386 ~1996!. 8 ences therein. 20 J.-X. Zhu, B. Friedman, and C.S. Ting, Phys. Rev. B 59, 3353 ~1999!. 21...

  6. Regmi Research Series ,Year 7, December 1, 1975

    E-Print Network [OSTI]

    Regmi, Mahesh C

    1975-01-01

    . Activit ies of the Guthi Corporation .le .. Prel i ri,inacy tJotes on thE: Nature ol: R~na Law and ( 'overrun en t 19 . The HarHHnan- Dmka .Palace 20 . Selected Documents of Kartik- Marga, 1 8 87 21. The Fak i rana Levy . 22 . 'l'he Dhilrmting of Go r akrpuri Cv.i.ns 28 . Sel e c- t cd...

  7. The pneumatic conveyor as a continuous-flow mixer 

    E-Print Network [OSTI]

    Stipe, Dennis Ray

    1964-01-01

    =~+cpc', ' 'ag 4he . ':, '. , '- ?, . de~i"af xcixing caint' out -saxss af the . j&roblsms'. invo1vsd. end':;: ', x, k yx". ~abjures . fox tctisticall3 ts, ting the degree of mixing 'OWKainsdx 1 8 l5 0 H-A P, T E-r4' l, l I T i, QJIPs~~. IFZ SSF9- 'I...? -' '. - ". ': ";:: '-'. aawpagsbls 'fg~:. g'ox, ', &9/i-Was' gj8. tboiiaan4:-be~ d " 'Ibis'ex '-. , ::;. : gaddi~ fiedlot op? patloii- iequXths. :itbot-mm . feed; be:, pea +e'seed and placed before the an&'als io'a;uinL&zw nii. :. bey 'of opec'at'o~s, ' 'we byexattions ia' glw...

  8. Historische Fragen zur Ethnogenese der Salaren

    E-Print Network [OSTI]

    Dwyer, Arienne M.

    2006-01-01

    Xúnhuà-tíng ??? in der Mitte. 6 den Salaren der äußeren fünf G?ngs ist besonders groß. (Zu? wén xi?ng zòu g?o xù bi?n ??????? Band 51 (1874), in Saguchi 1986: 97) Das Machtzentrum liegt seit dem Zeiten der frühen Míng-Zeit und dem Anführer Hán B?o in den... in the middle. 11 Those which were consolidated into other gongs are starred on the map. 5 wen xiang zou g?o xu bian, j51, ‘Shoufu Xúnhuà ting cheng ci (1874), in Saguchi 1986:97) The durative power center lay since early Míng times in the hands of the t?s?s...

  9. Portable Doppler interferometer system for shock diagnostics and high speed motion

    SciTech Connect (OSTI)

    Fleming, K.J.; Crump, O.B. Jr.

    1994-05-01

    VISAR (Velocity Interferometer System for Any Reflector) is a system that uses the Doppler effect and is widely used for measuring the velocity of projectiles, detonations, flying plates, shock pressures (particle velocity) and other high speed/high acceleration motion. Other methods of measurement such as accelerometers and pressure gauges have disadvantages in that they are sensitive to radiation, electromagnetic pulses, and their mass can drastically alter the velocity of the projectile. VISAR uses single frequency-single mode laser fight focused onto a target of interest. Reflected fight from the target is collected and sent through a modified, unequal leg Michelson interferometer. In the interferometer the light is split into two components which travel through the legs of the interferometer cavity and are then recombined. When the light recombines, an interference pattern is created which can range from dark (destructive interference) to bright (constructive interference). When the target moves, the reflected laser light experiences a frequency shift (increase) with respect to the frequency from the target in a static condition. Since the Doppler shifted light is split and routed through an unequal leg interferometer cavity, there is a time lag of the light containing the Doppler information at the recombination point in the interferometer. The effect of the time lag is to create a sinusoidally changing interference pattern (commonly called fringes). Since the interferometer time delay, laser wavelength, and the speed of light are known, an accurate measurement of target velocity/acceleration may be measured by analyzing both the number of tinges and the speed of tinge generation (system accuracy is 3--4%).

  10. A Fast hardware tracker for the ATLAS Trigger

    E-Print Network [OSTI]

    Pandini, Carlo Enrico; The ATLAS collaboration

    2015-01-01

    The trigger system at the ATLAS experiment is designed to lower the event rate occurring from the nominal bunch crossing at 40 MHz to about 1 kHz for a designed LHC luminosity of 10$^{34}$ cm$^{-2}$ s$^{-1}$. To achieve high background rejection while maintaining good efficiency for interesting physics signals, sophisticated algorithms are needed which require extensive use of tracking information. The Fast TracKer (FTK) trigger system, part of the ATLAS trigger upgrade program, is a highly parallel hardware device designed to perform track-finding at 100 kHz and based on a mixture of advanced technologies. Modern, powerful Field Programmable Gate Arrays (FPGA) form an important part of the system architecture, and the combinatorial problem of pattern recognition is solved by ~8000 standard-cell ASICs named Associative Memories. The availability of the tracking and subsequent vertex information within a short latency ensures robust selections and allows improved trigger performance for the most difficult sign...

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

    SciTech Connect (OSTI)

    Vierow, Karen

    2005-08-29

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

  12. Intermediate-break LOCA analyses for the AP600 design

    SciTech Connect (OSTI)

    Boyack, B.E.; Lime, J.F.

    1995-07-01

    A postulated double-ended guillotine break of a direct-vessel-injection line in an AP600 plant has been analyzed. This event is characterized as an intermediate break loss-of-coolant accident (IBLOCA). Most of the insights regarding the response of the AP600 safety systems to the postulated accident are derived from calculations performed with the TRAC-PFl/MOD2 code. However, complementary insights derived from a scaled experiment conducted in the ROSA facility, as well as insights based upon calculations by other codes, are also presented. The key processes occurring in an AP600 during a IBLOCA are primary coolant system depressurization, inventory depletion, inventory replacement via emergency core coolant injection, continuous core cooling, and long-term decay heat rejection to the atmosphere. Based upon the calculated and experimental results, the AP600 will not experience a core heat up and will reach a safe shutdown state using only safety-class equipment. Only the early part of the long-term cooling period initiated by In-containment Refueling Water Storage Tank injection was evaluated Thus, the observation that the core is continuously cooled should be verified for the latter phase of the long-term cooling period, the interval when sump injection and containment cooling processes are important.

  13. Use of 2D/3D data for peak cladding temperature uncertainty studies

    SciTech Connect (OSTI)

    Boyack, B.E.

    1988-01-01

    In August 1988, the Nuclear Regulatory Commission (NRC) approved the final version of a revised rule on the acceptance of emergency core cooling systems. The revised rule allows emergency core cooling system analysis based on best-estimate methods, provided uncertainties in the prediction of prescribed acceptance limits are quantified and reported. To support the revised rule, the NRC developed the Code Scaling, Applicability, and Uncertainty (CSAU) evaluation methodology. Data from the 2D/3D program have been used in a demonstration of the CSAU methodology in two ways. First, the data were used to identify and quantify biases that are related to the implementation of selected correlations and models in the thermal-hydraulic systems code TRAC-PF1/MOD1 as it is used to calculate the demonstration transient, a large-break loss-of-coolant accident. Second, the data were used in a supportive role to provide insight into the accuracy of code calculations and to confirm conclusions that are drawn regarding specific CSAU studies. Examples are provided illustrating each of these two uses of 2D/3D data. 9 refs., 7 figs.

  14. Quantifying reactor safety margins: Part 1: An overview of the code scaling, applicability, and uncertainty evaluation methodology

    SciTech Connect (OSTI)

    Boyack, B.E.; Duffey, R.B.; Griffith, P.; Katsma, K.R.; Lellouche, G.S.; Levy, S.; Rohatgi, U.S.; Wilson, G.E.; Wulff, W.; Zuber, N.

    1988-01-01

    In August 1988, the Nuclear Regulatory Commission (NRC) approved the final version of a revised rule on the acceptance of emergency core cooling systems (ECCS) entitled ''Emergency Core Cooling System; Revisions to Acceptance Criteria.'' The revised rule states an alternate ECCS performance analysis, based on best-estimate methods, may be used to provide more realistic estimates of plant safety margins, provided the licensee quantifies the uncertainty of the estimates and included that uncertainty when comparing the calculated results with prescribed acceptance limits. To support the revised ECCS rule, the NRC and its contractors and consultants have developed and demonstrated a method called the Code Scaling, Applicability, and Uncertainty (CSAU) evaluation methodology. It is an auditable, traceable, and practical method for combining quantitative analyses and expert opinions to arrive at computed values of uncertainty. This paper provides an overview of the CSAU evaluation methodology and its application to a postulated cold-leg, large-break loss-of-coolant accident in a Westinghouse four-loop pressurized water reactor with 17 /times/ 17 fuel. The code selected for this demonstration of the CSAU methodology was TRAC-PF1/MOD1, Version 14.3. 23 refs., 5 figs., 1 tab.

  15. Reflood completion report: Volume 1. A phenomenological thermal-hydraulic model of hot rod bundles experiencing simultaneous bottom and top quenching and an optimization methodology for closure development

    SciTech Connect (OSTI)

    Nelson, R.A. Jr.; Pimentel, D.A.; Jolly-Woodruff, S.; Spore, J.

    1998-04-01

    In this report, a phenomenological model of simultaneous bottom-up and top-down quenching is developed and discussed. The model was implemented in the TRAC-PF1/MOD2 computer code. Two sets of closure relationships were compared within the study, the Absolute set and the Conditional set. The Absolute set of correlations is frequently viewed as the pure set because the correlations is frequently viewed as the pure set because the correlations utilize their original coefficients as suggested by the developer. The Conditional set is a modified set of correlations with changes to the correlation coefficient only. Results for these two sets indicate quite similar results. This report also summarizes initial results of an effort to investigate nonlinear optimization techniques applied to the closure model development. Results suggest that such techniques can provide advantages for future model development work, but that extensive expertise is required to utilize such techniques (i.e., the model developer must fully understand both the physics of the process being represented and the computational techniques being employed). The computer may then be used to improve the correlation of computational results with experiments.

  16. Trace Assessment for BWR ATWS Analysis

    SciTech Connect (OSTI)

    Cheng, L.Y.; Diamond, D.; Arantxa Cuadra, Gilad Raitses, Arnold Aronson

    2010-04-22

    A TRACE/PARCS input model has been developed in order to be able to analyze anticipated transients without scram (ATWS) in a boiling water reactor. The model is based on one developed previously for the Browns Ferry reactor for doing loss-of-coolant accident analysis. This model was updated by adding the control systems needed for ATWS and a core model using PARCS. The control systems were based on models previously developed for the TRAC-B code. The PARCS model is based on information (e.g., exposure and moderator density (void) history distributions) obtained from General Electric Hitachi and cross sections for GE14 fuel obtained from an independent source. The model is able to calculate an ATWS, initiated by the closure of main steam isolation valves, with recirculation pump trip, water level control, injection of borated water from the standby liquid control system and actuation of the automatic depres-surization system. The model is not considered complete and recommendations are made on how it should be improved.

  17. Evaluation of atmospheric transport models for use in Phase II of the historical public exposures studies at the Rocky Flats Plant

    SciTech Connect (OSTI)

    Rood, A.S.; Killough, G.G.; Till, J.E.

    1999-08-01

    Five atmospheric transport models were evaluated for use in Phase II of the Historical Public Exposures Studies at the Rocky Flats Plant. Models included a simple straight-line Gaussian plume model (ISCST2), several integrated puff models (RATCHET, TRIAD, and INPUFF2), and a complex terrain model (TRAC). Evaluations were based on how well model predictions compared with sulfur hexafluoride tracer measurements taken in the vicinity of Rocky Flats in February 1991. Twelve separate tracer experiments were conducted, each lasting 9 hr and measured at 140 samplers in arcs 8 and 16 km from the release point at Rocky Flats. Four modeling objectives were defined based on the endpoints of the overall study: (1) the unpaired maximum hourly average concentration, (2) paired time-averaged concentration, (3) unpaired time-averaged concentration, and (4) arc-integrated concentration. Performance measures were used to evaluate models and focused on the geometric mean and standard deviation of the predicted-to-observed ratio and the correlation coefficient between predicted and observed concentrations. No one model consistently outperformed the others in all modeling objectives and performance measures. The overall performance of the RATCHET model was somewhat better than the other models.

  18. ATLAS Fast Tracker Simulation Challenges

    E-Print Network [OSTI]

    Adelman, Jahred; The ATLAS collaboration; Borodin, Mikhail; Chakraborty, Dhiman; García Navarro, José Enrique; Golubkov, Dmitry; Kama, Sami; Panitkin, Sergey; Smirnov, Yuri; Stewart, Graeme; Tompkins, Lauren; Vaniachine, Alexandre; Volpi, Guido

    2015-01-01

    To deal with Big Data flood from the ATLAS detector most events have to be rejected in the trigger system. the trigger rejection is complicated by the presence of a large number of minimum-bias events – the pileup. To limit pileup effects in the high luminosity environment of the LHC Run-2, ATLAS relies on full tracking provided by the Fast TracKer (FTK) implemented with custom electronics. The FTK data processing pipeline has to be simulated in preparation for LHC upgrades to support electronics design and develop trigger strategies at high luminosity. The simulation of the FTK - a highly parallelized system - has inherent performance bottlenecks on general-purpose CPUs. To take advantage of the Grid Computing power, the FTK simulation is integrated with Monte Carlo simulations at the Production System level above the ATLAS workload management system PanDA. We report on ATLAS experience with FTK simulations on the Grid and next steps for accommodating the growing requirements for resources during the LHC R...

  19. Los Alamos PWR feed-and-bleed studies summary results and conclusions

    SciTech Connect (OSTI)

    Boyack, B.E.; Henninger, R.J.; Lime, J.F.

    1985-01-01

    The adequacy of shutdown decay heat removal in pressurized water reactors (PWRs) is currently under investigation by the Nuclear Regulatory Commission. One part of this effort is review of feed-and-bleed procedures that could be used if the normal cooling mode through the steam generators was unavailable. Feed-and-bleed cooling is effected by manually activating the high-pressure injection (HPI) system and opening the power-operated relief valves (PORVs) to release the core decay energy. The feasibility of the feed-and-bleed concept as a diverse mode of heat removal has been evaluated at the Los Alamos National Laboratory. The TRAC-PF1 code has been used to predict the expected performances of the Oconee-1 and Calvert Cliffs-1 reactors of Babcock and Wilcox and Combustion Engineering, respectively, and the Zion-1 and H.B. Robinson-2 plants of Westinghouse. Feed and bleed was successfully applied in each of the four plants studied, provided it was initiated no later than the time of loss-of-secondary heat sink.

  20. Multi-dimensional Mixing Behavior of Steam-Water Flow in a Downcomer Annulus during LBLOCA Reflood Phase with a DVI Injection Mode

    SciTech Connect (OSTI)

    Kwon, T.S.; Yun, B.J.; Euh, D.J.; Chu, I.C.; Song, C.H. [Korea Atomic Energy Research Institute (KAERI), Yusung P.O. Box 105, Daejeon 305-600 (Korea, Republic of)

    2002-07-01

    Multi-dimensional thermal-hydraulic behavior in the downcomer annulus of a pressurized water reactor vessel with a Direct Vessel Injection (DVI) mode is presented based on the experimental observation in the MIDAS (Multi-dimensional Investigation in Downcomer Annulus Simulation) steam-water test facility. From the steady-state test results to simulate the late reflood phase of a Large Break Loss-of-Coolant Accidents(LBLOCA), isothermal lines show the multidimensional phenomena of a phasic interaction between steam and water in the downcomer annulus very well. MIDAS is a steam-water separate effect test facility, which is 1/4.93 linearly scaled-down of 1400 MWe PWR type of a nuclear reactor, focused on understanding multi-dimensional thermalhydraulic phenomena in downcomer annulus with various types of safety injection during the refill or reflood phase of a LBLOCA. The initial and the boundary conditions are scaled from the pre-test analysis based on the preliminary calculation using the TRAC code. The superheated steam with a superheating degree of 80 K at a given downcomer pressure of 180 kPa is injected equally through three intact cold legs into the downcomer. (authors)

  1. Multidimensional Mixing Behavior of Steam-Water Flow in a Downcomer Annulus During LBLOCA Reflood Phase with a Direct Vessel Injection Mode

    SciTech Connect (OSTI)

    Kwon, Tae-Soon; Yun, Byong-Jo; Euh, Dong-Jin; Chu, In-Cheol; Song, Chul-Hwa [Korea Atomic Energy Research Institute (Korea, Republic of)

    2003-07-15

    Multidimensional thermal-hydraulic behavior in the downcomer annulus of a pressurized water reactor (PWR) vessel with a direct vessel injection mode is presented based on the experimental observation in the MIDAS (multidimensional investigation in downcomer annulus simulation) steam-water test facility. From the steady-state test results to simulate the late reflood phase of a large-break loss-of-coolant accident (LBLOCA), isothermal lines show the multidimensional phenomena of a phasic interaction between steam and water in the downcomer annulus very well. MIDAS is a steam-water separate effect test facility, which is 1/4.93 linearly scaled down to a 1400-MW(electric) PWR type of a nuclear reactor, focused on understanding multidimensional thermal-hydraulic phenomena in a downcomer annulus with various types of safety injection during the refill or reflood phase of an LBLOCA. The initial and the boundary conditions are scaled from the pretest analysis based on the preliminary calculation using the TRAC code. The superheated steam with a superheating degree of 80 K at a given downcomer pressure of 180 kPa is injected equally through three intact cold legs into the downcomer.

  2. QUEST: A model to quantify uncertain emergency search techniques, theory and application

    SciTech Connect (OSTI)

    Johnson, M.M.; Goldsby, M.E.; Plantenga, T.D.; Wilcox, W.B. [Sandia National Labs., Livermore, CA (United States); Hensley, W.K. [Pacific Northwest Lab., Richland, WA (United States)

    1996-12-01

    As recent world events show, criminal and terrorist access to nuclear materials is a growing national concern. The national laboratories are taking the lead in developing technologies to counter these potential threats to our national security. Sandia National Laboratories, with support from Pacific Northwest Laboratory and the Remote Sensing Laboratory, has developed QUEST (a model to Quantify Uncertain Emergency Search Techniques), to enhance the performance of organizations in the search for lost or stolen nuclear material. In addition, QUEST supports a wide range of other applications, such as environmental monitoring, nuclear facilities inspections, and searcher training. QUEST simulates the search for nuclear materials and calculates detector response fro various source types and locations. The probability of detecting a radioactive source during a search is a function of many different variables. Through calculation of dynamic detector response, QUEST makes possible quantitative comparisons of various sensor technologies and search patterns. The QUEST model can be used to examine the impact of new detector technologies, explore alternative search concepts, and provide interactive search/inspector training.

  3. Nonlinear Dynamics, Magnitude-Period Formula and Forecasts on Earthquake

    E-Print Network [OSTI]

    Yi-Fang Chang

    2008-02-02

    Based on the geodynamics, an earthquake does not take place until the momentum-energy excess a faulting threshold value of rock due to the movement of the fluid layer under the rock layer and the transport and accumulation of the momentum. From the nonlinear equations of fluid mechanics, a simplified nonlinear solution of momentum corresponding the accumulation of the energy could be derived. Otherwise, a chaos equation could be obtained, in which chaos corresponds to the earthquake, which shows complexity on seismology, and impossibility of exact prediction of earthquakes. But, combining the Carlson-Langer model and the Gutenberg-Richter relation, the magnitude-period formula of the earthquake may be derived approximately, and some results can be calculated quantitatively. For example, we forecast a series of earthquakes of 2004, 2009 and 2014, especially in 2019 in California. Combining the Lorenz model, we discuss the earthquake migration to and fro. Moreover, many external causes for earthquake are merely the initial conditions of this nonlinear system.

  4. Seasonal variations in the equatorial thermospheric wind measured at Arequipa, Peru

    SciTech Connect (OSTI)

    Biondi, M.A.; Merriwether, J.W.; Fejer, B.G.; Gonzalez, S.A.

    1990-08-01

    Studies have been carried out Arequipa, Peru, of the seasonal variations in the thermospheric winds at moderate solar flux levels and geomagnetic activity. Fabry-Perot interferometer measurements of the doppler shifts in the 630.0 nm nightglow emission line from March to August 1983 and from April to October 1988 have yielded monthly-average meridional winds that are nearly zero (<50 m/s) and possible fluctuating in direction through much of the night but develop a southward flow at 50 - 100 m/s in the early and the late night from May onward. The average zonal winds are eastward throughout the night, reaching peak velocities before local midnight and then decreasing. The peak velocities increase to a maximum around the June solstice. The winds are generally stronger in 1988 than in 1983, even thought the solar EUV fluxes are comparable fro both years. Comparison of the present results with earlier satellite measurements, as embodied in the Horizontal Wind Model of Hedin et al., reveals generally satisfactory agreement at the equinox and June solstice, except for the June 1988 period. NCAR Therospheric General Circulation Model, calculated for similar solar flux levels, yields meridional and zonal wind variations which exhibit the same temporal behaviors but generally smaller values than the present measurements.

  5. Bearing capacity and settlement of circular shallow foundations using a non-linear constitutive relationship

    E-Print Network [OSTI]

    McMahon, B. T.; Haigh, Stuart; Bolton, M. D.

    2014-04-04

    m an us cr ip t i s t he a cc ep te d m an us cr ip t p rio r t o co py e di tin g an d pa ge c om po sit io n. It m ay d iff er fr om th e fin al o ffi ci al v er sio n of re co rd . Page 21 of 26 proposed by McMahon et al. (2013a... fro m w w w .n rc re se ar ch pr es s.c om b y N A ZA RE TH C O LL EG E O F RO CH ES TE R on 0 4/ 30 /1 4 Fo r p er so na l u se o nl y. T hi s J us t-I N m an us cr ip t i s t he a cc ep te d m an us cr ip t p rio r t o co py e di tin g...

  6. Exploring uncertainties in dark energy constraints using current observational data with Planck 2015 distance priors

    E-Print Network [OSTI]

    Wang, Yun

    2015-01-01

    We explore the systematic uncertainties in dark energy constraints using the latest observational data from Type Ia Supernovae (SNe Ia), galaxy clustering, and cosmic microwave background anisotropy (CMB) data. We use the Joint Lightcurve Analysis (JLA) set of 740 SNe Ia, galaxy clustering measurements of H(z)s and D_A(z)/s (where s is the sound horizon at the drag epoch) from the Sloan Digital Sky Survey (SDSS) at z=0.35 (SDSS DR7) and z=0.57 (BOSS DR11), and the distance priors that we have derived from the 2015 Planck data (we present the mean values and covariance matrices required for using these). We find that omitting the BOSS DR11 measurement of H(z)s at z=0.57 leads to more concordant cosmological constraints, indicative of possible systematic uncertainties that affect the measurement of the line-of-sight galaxy clustering. We also find that flux-averaging of SNe Ia at z>= 0.5 gives significantly tighter constraints on dark energy; this can be due to the reduction in the distance measurement bias fro...

  7. Radiation Tests for a Single-GEM Loaded Gaseous Detector

    E-Print Network [OSTI]

    Lee, Kyong Sei; Kim, Sang Yeol; Park, Sung Keun

    2014-01-01

    We report on the systematic study of a single-gas-electron-multiplication (GEM) loaded gaseous detector developed for precision measurements of high-energy particle beams and dose-verification measurements. In the present study, a 256-channel prototype detector with an active area of 16$\\times$16 cm$^{2}$, operated in a continuous current-integration-mode signal-processing method, was manufactured and tested with x rays emitted from a 70-kV x-ray generator and 43-MeV protons provided by the MC50 proton cyclotron at the Korea Institute of Radiological and Medical Science (KIRAMS). The amplified detector response was measured for the x rays with an intensity of about 5$\\times$10$^{6}$ Hz cm$^{-2}$. The linearity of the detector response to the particle flux was examined and validated by using 43-MeV proton beams. The non-uniform development of the amplification for the gas electrons in space was corrected by applying proper calibration to the channel responses of the measured beam-profile data. We concluded fro...

  8. Heat-flux measurements for the rotor of a full-stage turbine: Part I - Time-averaged results

    SciTech Connect (OSTI)

    Dunn, M.G.

    1986-07-01

    This paper describes time-average heat-flux distributions obtained for the blade of a Garrett TFE 731-2 hp full stage rotating turbine. Blade measurements were obtained both with and without injection. The injected gas was supplied from a separate reservoir and was directed into the turbine gas path via nozzle guide vane (NGV) pressure surface slots located at approximately 63 percent of the wetted distance. Blade heat-flux measurements were performed fro two different injection gas temperatures, T/sub c/T/sub o/ = 0.53 and T/sub c/T/sub o/ - 0.82. A shock tube is used as a short-duration source of heated air to which the turbine is subjected and thin-film gages are used to obtain the heat-flux measurements. Results are presented along the blade in the flow direction at 10, 50, and 90 percent span for both the pressure and suction surfaces. A sufficient number of measurements were obtained to also present spanwise distributions. At approximately the 50 percent span location, two contoured inserts containing closely spaced gages were installed in the blade so that the leading-edge region distribution could be resolved in detail. The blade results are compared with predictions obtained using a flat-plate technique and with predictions obtained using a version of STAN 5.

  9. Dragging of inertial frames in the composed black-hole-ring system

    E-Print Network [OSTI]

    Hod, Shahar

    2015-01-01

    A well-established phenomenon in general relativity is the dragging of inertial frames by a spinning object. In particular, due to the dragging of inertial frames by a ring orbiting a central black hole, the angular-velocity of the black-hole horizon in the composed black-hole-ring system is no longer related to the black-hole angular-momentum by the simple Kerr-like (vacuum) relation $\\Omega^{\\text{Kerr}}_{\\text{H}}(J_{\\text{H}})=J_{\\text{H}}/2M^2R_{\\text{H}}$. Will has performed a perturbative treatment of the composed black-hole-ring system in the regime of slowly rotating black holes and found the explicit relation $\\Omega^{\\text{BH-ring}}_{\\text{H}}(J_{\\text{H}}=0,J_{\\text{R}},R)=2J_{\\text{R}}/R^3$ for the angular-velocity of a central black hole with zero angular-momentum. Analyzing a sequence of black-hole-ring configurations with adiabatically varying (decreasing) circumferential radii, we show that the expression found by Will implies a smooth transition of the central black-hole angular-velocity fro...

  10. Improving Security in the ATLAS PanDA System

    E-Print Network [OSTI]

    Caballero, J; The ATLAS collaboration; Nilsson, P; Stewart, G; Potekhin, M; Wenaus, T

    2011-01-01

    The security challenges faced by users of the grid are considerably different to those faced in previous environments. The adoption of pilot jobs systems by LHC experiments has mitigated many of the problems associated with the inhomogeneities found on the grid and has greatly improved job reliability; however, pilot jobs systems themselves must then address many security issues, including the execution of multiple users' code under a common `grid' identity. In this paper we describe the improvements and evolution of the security model in the ATLAS PanDA (Production and Distributed Analysis) system. We describe the security in the PanDA server which is in place to ensure that only authorized members of the VO are allowed to submit work into the system and that jobs are properly audited and monitored. We discuss the security in place between the pilot code itself and the PanDA server, ensuring that only properly authenticated workload is delivered to the pilot for execution. When the code to be executed is fro...

  11. Interaction and merging of two sinistral filaments

    SciTech Connect (OSTI)

    Jiang, Yunchun; Yang, Jiayan; Liu, Yu; Li, Haidong; Wang, Haimin; Ji, Haisheng; Li, Jianping

    2014-09-20

    In this paper, we report the interaction and subsequent merging of two sinistral filaments (F1 and F2) occurring at the boundary of AR 9720 on 2001 December 6. The two filaments were close and nearly perpendicular to each other. The interaction occurred after F1 was erupted and the eruption was impeded by a more extended filament channel (FC) standing in the way, in which F2 was embedded. The erupted material ran into FC along its axis, causing F1 and F2 to merge into a single structure that subsequently underwent a large-amplitude to-and-fro motion. A significant plasma heating process was observed in the merging process, making the mixed material largely disappear from the H? passband, but appear in Extreme Ultraviolet Telescope 195 Å images for a while. These observations can serve as strong evidence of merging reconnection between the two colliding magnetic structures. A new sinistral filament was formed along FC after the cooling of the merged and heated material. No coronal mass ejection was observed to be associated with the event; though, the eruption was accompanied by a two-ribbon flare with a separation motion, indicating that the eruption had failed. This event shows that, in addition to overlying magnetic fields, such an interaction is an effective restraint to make a filament eruption fail in this way.

  12. Heterogeneous catalytic process for alcohol fuels from syngas. Final technical report

    SciTech Connect (OSTI)

    Dombek, B.D.

    1996-03-01

    The primary objective of this project has been the pursuit of a catalyst system which would allow the selective production from syngas of methanol and isobutanol. It is desirable to develop a process in which the methanol to isobutanol weight ratio could be varied from 70/30 to 30/70. The 70/30 mixture could be used directly as a fuel additive, while, with the appropriate downstream processing, the 30/70 mixture could be utilized for methyl tertiary-butyl ether (MTBE) synthesis. The indirect manufacture of MTBE from a coal derived syngas to methanol and isobutanol process would appear to be a viable solution to MTBE feedstock limitations. To become economically attractive, a process fro producing oxygenates from coal-derived syngas must form these products with high selectivity and good rates, and must be capable of operating with a low-hydrogen-content syngas. This was to be accomplished through extensions of known catalyst systems and by the rational design of novel catalyst systems.

  13. Precisely determined the spent nuclear fuel antineutrino flux and spectrum for Daya Bay antineutrino experiment

    E-Print Network [OSTI]

    Ma, X B; Chen, Y X; Zhong, W L; An, F P

    2015-01-01

    Spent nuclear fuel (SNF) antineutrino flux is an important source of uncertainties for a reactor neutrino flux prediction. However, if one want to determine the contribution of spent fuel, many data are needed, such as the amount of spent fuel in the pool, the time after discharged from the reactor core, the burnup of each assembly, and the antineutrino spectrum of the isotopes in the spend fuel. A method to calculate the contribution of SNF is proposed in this study. In this method, reactor simulation code verified by experiment have been used to simulate the fuel depletion by taking into account more than 2000 isotopes and fission products, the quantity of SNF in each six spend fuel pool, and the antineutrino spectrum of SNF varying with time after SNF discharged from core. Results show that the contribution of SNF to the total antineutrino flux is about 0.26%~0.34%, and the shutdown impact is about 20%. The SNF spectrum would distort the softer part of antineutrino spectra, and the maximum contribution fro...

  14. Observations on the vitamin B12 binding substance of egg yolk 

    E-Print Network [OSTI]

    Ener, Huseyin Siret

    1953-01-01

    ~gg~ ?'~ ?@T PtETT P W43@QgSJ, '98-Q9~6fx ". ~vs "(&gal 'e. 'w~?-mPva~~r~, S~ ~~m=~A~&~ *ting ~g' Pttgggbf $0'3/36+6'fg(R@TT~5[ g '+PI/ /gal'Pft??'?Q' ?Q 'Q~? " f, , ggttTQI? *'m't Air Il?II'I I0 I? '0 'II ?I??T ll 0 't 000 t. ' t'?00'0 Wt Ill t?LII TT...A, Thesis "yi""ih eQ Le Qhe *~pe'j ~'j e *ese' 1 A: gicQ1+MQ1'5716';, :!eshs'51Q91, . P911e:, :, 6 'Qf Text's , i~ yeW~ial fM "i11'. e~h. i=" ". '. he ie~ixemenPs 'e= -~he Pi~w'x s. pZ"' ' ACKhG~KEEC~L::ai?iT The anterior w1shes to, express...

  15. Health-hazard evaluation report HETA 87-232-1948, Consolidated Freightways, Pocono Summit, Pennsylvania

    SciTech Connect (OSTI)

    Blade, L.M.; Savery, H.

    1989-02-01

    A study was made of possible hazardous working conditions at Consolidated Freightways, Pocono Summit, Pennsylvania. The request concerned potential exposure of dock workers to exhaust emissions from diesel-powered forklift trucks brought about by the health complaints of several of the workers there. Twenty-one workers were identified as symptomatic of exposure to diesel exhaust fumes. This included at least half of the midnight shift. Upper respiratory tract irritation was mentioned by all of these workers. Some reported eye irritation, cough productive of black-tinged sputum, and sore throat. These symptoms lessened during periods away from work. Airborne concentrations of all components measured at the site were well below the applicable exposure limits. A potential health hazard associated with exposure to diesel engine exhaust existed. The authors recommend that whenever a forklift truck is to be left unattended for more than the shortest of periods, the motor should be turned off. The newer forklifts should be used on a shift before the older, less emission controlled, lifts. Roof exhaust fans ordered are to be installed at the facility and their effectiveness evaluated.

  16. A flat-cathode thermionic injector for the PHERMEX Radiographic Facility

    SciTech Connect (OSTI)

    Kauppila, T.; Builta, L.; Burns, M.; Gregory, W.; Honaberger, D.; Watson, S.; Hughes, T.

    1993-06-01

    The PHERMEX (Pulsed High-Energy Radiographic Machine Emitting X-rays) standing-wave linear accelerator is a high-current electron beam generator used for flash-radiography. An improved electron gun has been designed employing a flat-thermionic cathode to replace the existing Pierce-geometry gun. The flat cathode yields increased current with the same applied voltage and cathode area as the Pierce gun. The ISIS code simulations indicate a beam current of 1.5 kA at 600 kV. The new geometry also reduces the probability for high voltage breakdown in the A-K gap. A reentrant magnet captures the expanding electron beam and a bucking coil nulls cathode-tinge field. A third coil is used to optimize the extraction field profile and reduce the effect of nonlinear space charge on the beam emittance. Time-resolved measurements of beam current and voltage have been made. In addition, a streak camera was used to measure beam emittance and spatial profile. Comparisons of measurements with simulations are presented.

  17. A flat-cathode thermionic injector for the PHERMEX Radiographic Facility

    SciTech Connect (OSTI)

    Kauppila, T.; Builta, L.; Burns, M.; Gregory, W.; Honaberger, D.; Watson, S. ); Hughes, T. )

    1993-01-01

    The PHERMEX (Pulsed High-Energy Radiographic Machine Emitting X-rays) standing-wave linear accelerator is a high-current electron beam generator used for flash-radiography. An improved electron gun has been designed employing a flat-thermionic cathode to replace the existing Pierce-geometry gun. The flat cathode yields increased current with the same applied voltage and cathode area as the Pierce gun. The ISIS code simulations indicate a beam current of 1.5 kA at 600 kV. The new geometry also reduces the probability for high voltage breakdown in the A-K gap. A reentrant magnet captures the expanding electron beam and a bucking coil nulls cathode-tinge field. A third coil is used to optimize the extraction field profile and reduce the effect of nonlinear space charge on the beam emittance. Time-resolved measurements of beam current and voltage have been made. In addition, a streak camera was used to measure beam emittance and spatial profile. Comparisons of measurements with simulations are presented.

  18. Summary report on four foot septifoil cooling experiment

    SciTech Connect (OSTI)

    Randolph, H.W.; Collins, S.L.; Verebelyi, D.T.; Foti, D.J.

    1991-10-01

    Cooling parameters for some of the SRS reactor internal components are computed using the Transient Reactor Analysis Code, TRAC.'' In order to benchmark the code, the Safety Analysis Group of SRL requested an experiment to provide measurements of cooling parameters in a well defined physical system utilizing SRS reactor component(s). The experiment selected included a short length of septifoil with both top and bottom fittings containing five simulated control rods in an unseated'' configuration. Power level to be supplied to the rods was targeted at 2.5 kilowatts per foot. The septifoil segment was to be operated with no forced flow in order to evaluate thermal-hydraulic cooling. Parameters to be measured for comparison with code predictions were basic cooling phenomena, incidence of film boiling, thermal-hydraulic flow rate, pressure rise, and ratio of heat transfer through the wall of the assembly vs heat transfer to axial water flow through the assembly. Experimental apparatus was designed and assembled incorporating five simulated control rods four feet long, joule heated inside a five foot length of type Q'' septifoil. Water at 70 C was fed independently to the bottom inlet and along the outside of the septifoil. Water flowing along the outside of the septifoil was in confined flow and provided calorimetry to measure power flow through the septifoil housing. A shadowgraph technique was developed and used to monitor unforced flow of water pumped thermal-hydraulically through the septifoil. Electrical power of 10,000 to 70,000 watts was fed to the simulated rods from a dc power supply. Computer data acquisition was accomplished using LabView'' software programmed to match the configuration of the experiment along with scanning digital voltmeters and requisite signal sensors. Video camcorders were used to provide video records of six areas of the experiment.

  19. Summary report on four foot septifoil cooling experiment

    SciTech Connect (OSTI)

    Randolph, H.W.; Collins, S.L.; Verebelyi, D.T.; Foti, D.J.

    1991-10-01

    Cooling parameters for some of the SRS reactor internal components are computed using the Transient Reactor Analysis Code, ``TRAC.`` In order to benchmark the code, the Safety Analysis Group of SRL requested an experiment to provide measurements of cooling parameters in a well defined physical system utilizing SRS reactor component(s). The experiment selected included a short length of septifoil with both top and bottom fittings containing five simulated control rods in an ``unseated`` configuration. Power level to be supplied to the rods was targeted at 2.5 kilowatts per foot. The septifoil segment was to be operated with no forced flow in order to evaluate thermal-hydraulic cooling. Parameters to be measured for comparison with code predictions were basic cooling phenomena, incidence of film boiling, thermal-hydraulic flow rate, pressure rise, and ratio of heat transfer through the wall of the assembly vs heat transfer to axial water flow through the assembly. Experimental apparatus was designed and assembled incorporating five simulated control rods four feet long, joule heated inside a five foot length of type ``Q`` septifoil. Water at 70 C was fed independently to the bottom inlet and along the outside of the septifoil. Water flowing along the outside of the septifoil was in confined flow and provided calorimetry to measure power flow through the septifoil housing. A shadowgraph technique was developed and used to monitor unforced flow of water pumped thermal-hydraulically through the septifoil. Electrical power of 10,000 to 70,000 watts was fed to the simulated rods from a dc power supply. Computer data acquisition was accomplished using ``LabView`` software programmed to match the configuration of the experiment along with scanning digital voltmeters and requisite signal sensors. Video camcorders were used to provide video records of six areas of the experiment.

  20. Once-through steam-generator sensitivity calculations

    SciTech Connect (OSTI)

    Steiner, J.L.; Siebe, D.A.

    1988-01-01

    A series of TRAC-PF1/MOD2 thermal-hydraulic calculations has been performed to determine the effect of uncertainties in modeling once through steam-generator (OTSG) secondary-side phenomena on the calculated behavior of Babcock and Wilcox power plants. The calculations were performed by varying parameters in correlations for the secondary-side phenomena. The parameters and transients were chosen to show the maximum expected sensitivity of the calculated results to the parameter variations. The parameters were then varied over a range representing the estimated uncertainty in the correlation. In this manner, the sensitivity if the calculated plant behavior to the modeling uncertainties was determined with a reasonable number of calculations. The sensitivity of calculated plant behavior to variations in interfacial heat-transfer in the OTSG secondaries was determined in a series of steam-generator overfill transient calculations. Calculations were performed for a main steam line break (MSLB) transient to quantify the sensitivity to variations in interfacial drag in the secondaries; the interfacial drag was varied in these calculations to indicate the effects of entrainment and de-entrainment processes, for which no specific models exist in the code. In addition to the transient calculations, a series of steady-state calculations was performed to determine the sensitivity of the OTSG primary-to-secondary heat transfer to the assumed fraction of tubes wetted by the auxiliary feedwater (AFW) injection. The plant model used for the sensitivity calculations was qualified by performing a benchmark calculation for a natural circulation test in the TMI-1 plant.

  1. Report on a randomized trial comparing two forms of immobilization of the head for fractionated stereotactic radiotherapy

    SciTech Connect (OSTI)

    Bednarz, Greg; Machtay, Mitchell; Werner-Wasik, Maria; Downes, Beverly; Bogner, Joachim; Hyslop, Terry; Galvin, James; Evans, James; Curran, Walter Jr.; Andrews, David

    2009-01-15

    Fractionated stereotactic radiotherapy (SRT) requires accurate and reproducible immobilization of the patient's head. This randomized study compared the efficacy of two commonly used forms of immobilization used for SRT. Two routinely used methods of immobilization, which differ in their approach to reproduce the head position from day to day, are the Gill-Thomas-Cosman (GTC) frame and the BrainLab thermoplastic mask. The GTC frame fixates on the patient's upper dentition and thus is in direct mechanical contact with the cranium. The BrainLab mask is a two-part masking system custom fitted to the front and back of the patient's head. After patients signed an IRB-approved informed consent form, eligible patients were randomized to either GTC frame or mask for their course of SRT. Patients were treated as per standard procedure; however, prior to each treatment a set of digital kilovolt images (ExacTrac, BrainLabAB, Germany) was taken. These images were fused with reference digitally reconstructed radiographs obtained from treatment planning CT to yield lateral, longitudinal, and vertical deviations of isocenter and head rotations about respective axes. The primary end point of the study was to compare the two systems with respect to mean and standard deviations using the distance to isocenter measure. A total of 84 patients were enrolled (69 patients evaluable with detailed positioning data). A mixed-effect linear regression and two-tiled t test were used to compare the distance measure for both the systems. There was a statistically significant (p<0.001) difference between mean distances for these systems, suggesting that the GTC frame was more accurate. The mean 3D displacement and standard deviations were 3.17+1.95 mm for mask and 2.00+1.04 mm for frame. Both immobilization techniques were highly effective, but the GTC frame was more accurate. To optimize the accuracy of SRT, daily kilovolt image guidance is recommended with either immobilization system.

  2. SU-E-J-129: A Strategy to Consolidate the Image Database of a VERO Unit Into a Radiotherapy Management System

    SciTech Connect (OSTI)

    Yan, Y; Medin, P; Yordy, J; Zhao, B; Jiang, S

    2014-06-01

    Purpose: To present a strategy to integrate the imaging database of a VERO unit with a treatment management system (TMS) to improve clinical workflow and consolidate image data to facilitate clinical quality control and documentation. Methods: A VERO unit is equipped with both kV and MV imaging capabilities for IGRT treatments. It has its own imaging database behind a firewall. It has been a challenge to transfer images on this unit to a TMS in a radiation therapy clinic so that registered images can be reviewed remotely with an approval or rejection record. In this study, a software system, iPump-VERO, was developed to connect VERO and a TMS in our clinic. The patient database folder on the VERO unit was mapped to a read-only folder on a file server outside VERO firewall. The application runs on a regular computer with the read access to the patient database folder. It finds the latest registered images and fuses them in one of six predefined patterns before sends them via DICOM connection to the TMS. The residual image registration errors will be overlaid on the fused image to facilitate image review. Results: The fused images of either registered kV planar images or CBCT images are fully DICOM compatible. A sentinel module is built to sense new registered images with negligible computing resources from the VERO ExacTrac imaging computer. It takes a few seconds to fuse registered images and send them to the TMS. The whole process is automated without any human intervention. Conclusion: Transferring images in DICOM connection is the easiest way to consolidate images of various sources in your TMS. Technically the attending does not have to go to the VERO treatment console to review image registration prior delivery. It is a useful tool for a busy clinic with a VERO unit.

  3. SU-E-J-90: MRI-Based Treatment Simulation and Patient Setup for Radiation Therapy of Brain Cancer

    SciTech Connect (OSTI)

    Yang, Y; Cao, M; Han, F; Santhanam, A; Neylon, J; Gomez, C; Kaprealian, T; Sheng, K; Agazaryan, N; Low, D; Hu, P

    2014-06-01

    Purpose: Traditional radiation therapy of cancer is heavily dependent on CT. CT provides excellent depiction of the bones but lacks good soft tissue contrast, which makes contouring difficult. Often, MRIs are fused with CT to take advantage of its superior soft tissue contrast. Such an approach has drawbacks. It is desirable to perform treatment simulation entirely based on MRI. To achieve MR-based simulation for radiation therapy, bone imaging is an important challenge because of the low MR signal intensity from bone due to its ultra-short T2 and T1, which presents difficulty for both dose calculation and patient setup in terms of digitally reconstructed radiograph (DRR) generation. Current solutions will either require manual bone contouring or multiple MR scans. We present a technique to generate DRR using MRI with an Ultra Short Echo Time (UTE) sequence which is applicable to both OBI and ExacTrac 2D patient setup. Methods: Seven brain cancer patients were scanned at 1.5 Tesla using a radial UTE sequence. The sequence acquires two images at two different echo times. The two images were processed using in-house software. The resultant bone images were subsequently loaded into commercial systems to generate DRRs. Simulation and patient clinical on-board images were used to evaluate 2D patient setup with MRI-DRRs. Results: The majority bones are well visualized in all patients. The fused image of patient CT with the MR bone image demonstrates the accuracy of automatic bone identification using our technique. The generated DRR is of good quality. Accuracy of 2D patient setup by using MRI-DRR is comparable to CT-based 2D patient setup. Conclusion: This study shows the potential of DRR generation with single MR sequence. Further work will be needed on MR sequence development and post-processing procedure to achieve robust MR bone imaging for other human sites in addition to brain.

  4. High upwind concentrations observed during an upslope tracer event

    SciTech Connect (OSTI)

    Ciolek, J.T. Jr.

    1993-10-01

    In February of 1991 the Rocky Flats Plant conducted twelve tracer experiments to validate an emergency response dispersion model known as the Terrain-Responsive Atmospheric Code (TRAC) (Hodgin 1985). Experimenters released 140 to 260 kilograms of inert tracer gas (sulfur hexafloride) from the plant over an 11 hour period. During each release, one hundred and sixty-five samples, most of which formed concentric rings of 8 and 16 km radius from the plant, recorded cumulative hourly concentrations of the tracer at one meter above ground level (AGL). Figure 1 contains a depiction of the sampler location, the terrain, and the meteorological stations available within the tracer study area. Brown (1991) describes the experimental setup in more detail. The subject of this paper is an event that occurred early in the fifth experiment, on February 9, 1991. In this experiment, tracer material released from 13:00 to 17:00 LST appeared both downwind and upwind of the source, with the highest concentrations upwind. During the fifth experiment, high pressure in Utah produced mostly sunny skis around Rocky Flats. For most of the day, one could find moderate (5 to 10 ms{sup {minus}1}) northerly (from the North) flow within the 700 to 500 mb level of the atmosphere (approximately 3000 to 5500 meters above Mean Sea Level (MSL)). Synoptic scale motions were isolated enough from the surface layer and heating was great enough to produce a 1 km deep upslope flow (flow from the East to the West) by late afternoon. The winds reversed and became downslope at approximately 17:30 LST.

  5. Emerging NO{sub x}/SO{sub x} control technologies

    SciTech Connect (OSTI)

    Livengood, C.D. [Argonne National Lab., IL (United States); Markussen, J.M. [USDOE Pittsburgh Energy Technology Center, PA (United States)

    1992-04-01

    The development of advanced flue-gas-cleanup (FGC) technologies fro the control of sulfur dioxide (SO{sub 2}) and nitrogen oxides (NO{sub x}) emissions continues to be a very active area of research and development, both in this country and abroad. This activity is driven both by legislation (such as the recent revisions to the Clean Air Act) and by the desire to develop technologies that surpass current options in terms of performance, costs, operability, and waste/by-product properties. New issues, such as concern over global climate changes and the health effects of toxic air emissions (``air toxics``), are also helping to shape and prioritize the development programs. This paper provides a status report on a number of integrated FGC systems that have reached a significant stage of development, focusing on post-combustion processes that have been rested or are ready for testing at the pilot scale or larger. While some information that was presented at the 1991 CIBO NO{sub x} IV Control Conference is repeated for the sake of completeness, we have updated each section to reflect the most recent reported developments. Although a wide variety of technologies is discussed, it should be noted that there are a number of other integrated approaches, such as slagging combustors, fluidized-bed combustion, gasification/combined-cycle systems, and various processes combining low-NO{sub x} burners with SO{sub 2}-sorbent injection in the furnace. These other approaches also offer features that should not be overlooked when evaluating alternatives for a specific application.

  6. Emerging NO sub x /SO sub x control technologies

    SciTech Connect (OSTI)

    Livengood, C.D. (Argonne National Lab., IL (United States)); Markussen, J.M. (USDOE Pittsburgh Energy Technology Center, PA (United States))

    1992-01-01

    The development of advanced flue-gas-cleanup (FGC) technologies fro the control of sulfur dioxide (SO{sub 2}) and nitrogen oxides (NO{sub x}) emissions continues to be a very active area of research and development, both in this country and abroad. This activity is driven both by legislation (such as the recent revisions to the Clean Air Act) and by the desire to develop technologies that surpass current options in terms of performance, costs, operability, and waste/by-product properties. New issues, such as concern over global climate changes and the health effects of toxic air emissions ( air toxics''), are also helping to shape and prioritize the development programs. This paper provides a status report on a number of integrated FGC systems that have reached a significant stage of development, focusing on post-combustion processes that have been rested or are ready for testing at the pilot scale or larger. While some information that was presented at the 1991 CIBO NO{sub x} IV Control Conference is repeated for the sake of completeness, we have updated each section to reflect the most recent reported developments. Although a wide variety of technologies is discussed, it should be noted that there are a number of other integrated approaches, such as slagging combustors, fluidized-bed combustion, gasification/combined-cycle systems, and various processes combining low-NO{sub x} burners with SO{sub 2}-sorbent injection in the furnace. These other approaches also offer features that should not be overlooked when evaluating alternatives for a specific application.

  7. A full-dimensional multilayer multiconfiguration time-dependent Hartree study on the ultraviolet absorption spectrum of formaldehyde oxide

    SciTech Connect (OSTI)

    Meng, Qingyong, E-mail: mengqingyong@dicp.ac.cn [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, 116023 Dalian (China); Meyer, Hans-Dieter, E-mail: hans-dieter.meyer@pci.uni-heidelberg.de [Theoretische Chemie, Physikalisch-Chemisches Institut, Ruprecht-Karls Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg (Germany)

    2014-09-28

    Employing the multilayer multiconfiguration time-dependent Hartree (ML-MCTDH) method in conjunction with the multistate multimode vibronic coupling Hamiltonian (MMVCH) model, we perform a full dimensional (9D) quantum dynamical study on the simplest Criegee intermediate, formaldehyde oxide, in five lower-lying singlet electronic states. The ultraviolet (UV) spectrum is then simulated by a Fourier transform of the auto-correlation function. The MMVCH model is built based on extensive MRCI(8e,8o)/aug-cc-pVTZ calculations. To ensure a fast convergence of the final calculations, a large number of ML-MCTDH test calculations is performed to find an appropriate multilayer separations (ML-trees) of the ML-MCTDH nuclear wave functions, and the dynamical calculations are carefully checked to ensure that the calculations are well converged. To compare the computational efficiency, standard MCTDH simulations using the same Hamiltonian are also performed. A comparison of the MCTDH and ML-MCTDH calculations shows that even for the present not-too-large system (9D here) the ML-MCTDH calculations can save a considerable amount of computational resources while producing identical spectra as the MCTDH calculations. Furthermore, the present theoretical B{sup ~} {sup 1}A{sup ?}?X{sup ~} {sup 1}A{sup ?} UV spectral band and the corresponding experimental measurements [J. M. Beames, F. Liu, L. Lu, and M. I. Lester, J. Am. Chem. Soc. 134, 20045–20048 (2012); L. Sheps, J. Phys. Chem. Lett. 4, 4201–4205 (2013); W.-L. Ting, Y.-H. Chen, W. Chao, M. C. Smith, and J. J.-M. Lin, Phys. Chem. Chem. Phys. 16, 10438–10443 (2014)] are discussed. To the best of our knowledge, this is the first theoretical UV spectrum simulated for this molecule including nuclear motion beyond an adiabatic harmonic approximation.

  8. NSRD-06. Computational Capability to Substantiate DOE-HDBK-3010 Data

    SciTech Connect (OSTI)

    Louie, David L.Y.; Brown, Alexander L.

    2015-12-01

    Safety basis analysts throughout the U.S. Department of Energy (DOE) complex rely heavily on the information provided in the DOE Hand book, DOE-HDBK-3010, Airborne Release Fractions/Rates and Resp irable Fractions for Nonreactor Nuclear Facilities , to determine source terms. In calcula ting source terms, analysts tend to use the DOE Handbook's bounding values on airbor ne release fractions (ARFs) and respirable fractions (RFs) for various cat egories of insults (representing potential accident release categories). This is typica lly due to both time constraints and the avoidance of regulatory critique. Unfort unately, these bounding ARFs/RFs represent extremely conservative values. Moreover, th ey were derived from very limited small- scale table-top and bench/labo ratory experiments and/or fr om engineered judgment. Thus the basis for the data may not be re presentative to the actual unique accident conditions and configura tions being evaluated. The goal of this res earch is to develop a more ac curate method to identify bounding values for the DOE Handbook using the st ate-of-art multi-physics-based high performance computer codes. This enable s us to better understand the fundamental physics and phenomena associated with the ty pes of accidents for the data described in it. This research has examined two of the DOE Handbook's liquid fire experiments to substantiate the airborne release frac tion data. We found th at additional physical phenomena (i.e., resuspension) need to be included to derive bounding values. For the specific cases of solid powder under pre ssurized condition and mechanical insult conditions the codes demonstrated that we can simulate the phenomena. This work thus provides a low-cost method to establis h physics-justified sa fety bounds by taking into account specific geometri es and conditions that may not have been previously measured and/or are too costly to do so.

  9. DEVELOPING THE NATIONAL GEOTHERMAL DATA SYSTEM ADOPTION OF CKAN FOR DOMESTIC & INTERNATIONAL DATA DEPLOYMENT

    SciTech Connect (OSTI)

    Clark, Ryan J. [Arizona Geological Survey; Kuhmuench, Christoph [Siemens Corporation; Richard, Stephen M. [Arizona Geological Survey

    2013-01-01

    The National Geothermal Data System (NGDS) De- sign and Testing Team is developing NGDS software currently referred to as the “NGDS Node-In-A-Box”. The software targets organizations or individuals who wish to host at least one of the following: • an online repository containing resources for the NGDS; • an online site for creating metadata to register re- sources with the NGDS • NDGS-conformant Web APIs that enable access to NGDS data (e.g., WMS, WFS, WCS); • NDGS-conformant Web APIs that support dis- covery of NGDS resources via catalog service (e.g. CSW) • a web site that supports discovery and under- standing of NGDS resources A number of different frameworks for development of this online application were reviewed. The NGDS Design and Testing Team determined to use CKAN (http://ckan.org/), because it provides the closest match between out of the box functionality and NGDS node-in-a-box requirements. To achieve the NGDS vision and goals, this software development project has been inititated to provide NGDS data consumers with a highly functional inter- face to access the system, and to ease the burden on data providers who wish to publish data in the sys- tem. It is important to note that this software package constitutes a reference implementation. The NGDS software is based on open standards, which means other server software can make resources available, and other client applications can utilize NGDS data. A number of international organizations have ex- pressed interest in the NGDS approach to data access. The CKAN node implementation can provide a sim- ple path for deploying this technology in other set- tings.

  10. SU-E-J-189: Credentialing of IGRT Equipment and Processes for Clinical Trials

    SciTech Connect (OSTI)

    Court, L; Aristophanous, M; Followill, D; Kirsner, S; Kisling, K; Pidikiti, R; Wong, P; Balter, P; Bellezza, D; Massingill, B; Papanikolaou, N; Parker, B; Zhen, H

    2014-06-01

    Purpose: Current dosimetry phantoms used for clinical trial credentialing do not directly assess IGRT processes. This work evaluates a custom-built IGRT phantom for credentialing of multiple IGRT modalities and processes. Methods: An IGRT phantom was built out of a low-density body with two inserts. Insert A is used for the CT simulation. Insert B is used for the actual treatment. The inserts contain identical targets in different locations. Relative positions are unknown to the user. The user simulates the phantom (with insert A) as they would a patient, including marking the phantom. A treatment plan is created and sent to the treatment unit. The phantom (with insert B) is then positioned using local IGRT practice. Shifts (planned isocenter, if applicable, and final isocenter) are marked on the phantom using room lasers. The mechanical reproducibility of re-inserting the inserts within the phantom body was tested using repeat high-resolution CT scans. The phantom was tested at 7 centers, selected to include a wide variety of imaging equipment. Results: Mechanical reproducibility was measured as 0.5-0.9mm, depending on the direction. Approaches tested to mark (and transfer) simulation isocenter included lasers, fiducials and reflective markers. IGRT approaches included kV imaging (Varian Trilogy, Brainlab ExacTrac), kV CT (CT-on-rails), kV CBCT (Varian Trilogy, Varian Truebeam, Elekta Agility) and MV CT (Tomotherapy). Users were able to successfully use this phantom for all combinations of equipment and processes. IGRT-based shifts agreed with the truth within 0.8mm, 0.8mm and 1.9mm in the LR, AP, and SI directions, respectively. Conclusion: Based on these preliminary results, the IGRT phantom can be used for credentialing of clinical trials with an action level of 1mm in AP and LR directions, and 2mm in the SI direction, consistent with TG142. We are currently testing with additional institutions with different equipment and processes, including Cyberknife. This project was funded by the Cancer Prevention Research Institute of Texas.

  11. Central American geologic map project

    SciTech Connect (OSTI)

    Dengo, G.

    1986-07-01

    During the Northeast Quadrant Panel meeting of the Circum-Pacific Map Project held in Mexico City, February 1985, Central American panel members proposed and adopted plans for compiling a geologic map of Central America, probably at a scale of 1:500,000. A local group with participants from each country was organized and coordinated by Rolando Castillo, director, Central American School of Geology, University of Costa Rica, for the geologic aspects, and Fernando Rudin, director, Geographic Institute of Costa Rica, for the topographic base. In 1956, the US Geological Survey published a geologic map of the region at a scale of 1:1 million. Subsequent topographic and geologic mapping projects have provided a large amount of new data. The entire area is now covered by topographic maps at a scale of 1:50,000, and these maps have been used in several countries as a base for geologic mapping. Another regional map, the Metallogenic Map of Central America (scale = 1:2 million), was published in 1969 by the Central American Research Institute for Industry (ICAITI) with a generalized but updated geologic base map. Between 1969 and 1980, maps for each country were published by local institutions: Guatemala-Belize at 1:500,000, Honduras at 1:500,000, El Salvador at 1:100,000, Nicaragua at 1:1 million, Costa Rica at 1:200,000, and Panama at 1:1 million. This information, in addition to that of newly mapped areas, served as the base for the Central American part of the Geologic-Tectonic Map of the Caribbean Region (scale = 1:2.5 million), published by the US Geological Survey in 1980, and also fro the Northeast Quadrant Maps of the Circum-Pacific Region. The new project also involves bathymetric and geologic mapping of the Pacific and Caribbean margins of the Central American Isthmus. A substantial amount of new information of the Middle America Trench has been acquired through DSDP Legs 67 and 84.

  12. Entrainment of Solvent in Aqueous Stream from CINC V-5 Contactor

    SciTech Connect (OSTI)

    Fink, S. D.; Restivo, M. L.; Peters, T. B.; Fowley, M. D.; Burns, D. B.; Smith, W. M. Jr.; Fondeur, F. F.; Crump, S. L.; Norato, M. A.; Herman, D. T.; Nash, C. A.

    2005-04-29

    Personnel completed a rapid study of organic entrainment during operation of a CINC V-5 contactor under prototypical conditions covering the range of expected MCU operation. The study only considered the entrainment of organic into the strip acid effluent destined for the Defense Waste Processing Facility. Based on this work, the following observations are noted: (1) Concentrations of total organic from the contactor discharge, based upon modifier measurements, in the acid typically averaged 330 ppm{sub m}, for a range to 190-610 ppm{sub m}. (2) Entrained droplet sizes remained below 18 microns for samples collected at the decanter outlet and below 11 microns for samples taken from the contactor discharge. (3) Scouting tests showed that a vendor coalescer material promotes coalescence of smaller size droplets from the decanter effluent. (4) Personnel observed a previously unreported organic impurity in the solvent used for this study. Additional efforts are needed to ascertain the source of the impurity and its implication on the overall process. (5) Process throughputs and planned operating conditions result in very stable hydraulics, suggesting that the MCU stripping stages will have spare operating capacity. (6) The V-5 contactors show operated with relatively cool surfaces under the planned operating conditions. (7) If operating conditions result in an imbalance of the relative mixing and separation conditions within the contactor, a very stable emulsion may result. In this instance, the emulsion remained stable for weeks. The imbalance in this study resulted from use of improperly sized weir plates. (8) Personnel demonstrated an effective means of recovering emulsified solvent following a non-optimal equipment configuration. The protocols developed may offer benefit for MCU and SWPF operations. (9) This study developed and demonstrated the effectiveness of several analytical methods for support of the Caustic-Side Solvent Extraction process including infrared spectroscopy and droplet size measurement by a MicroTrac{trademark} S3000. Interfacial tension measurements also showed sensitivity to purity of the solvent suggesting that this technique may prove valuable for future process diagnostics. The study highlighted limitations of the current gas chromatography configuration for determination of modifier content of samples. Additional development of analytical methods for determining composition--and particularly modifier content--of organic and mixed aqueous-organic samples is warranted. Infrared spectroscopy shows particular promise. Additional full-scale studies are warranted to investigate the entrainment of organic in the aqueous effluent from the extraction operation. Since waste composition may differ appreciably for the process, this stream may exhibit much wider variance in hydraulic behavior, organic entrainment, and may pose a greater risk for poor hydraulics. Conducting contactor studies at SRNL allowed numerous personnel to view operations and facilitated the training of staff members. Members of the Design Authority, Engineering, and Training groups benefited from tours. Consideration should be given to procuring and installing a full-scale contactor at SRNL for future support and for assistance during commissioning of the MCU. Additional study of surface and interfacial tension is recommended. This tool may also offer economical and rapid process diagnostics for future operations.

  13. SU-E-T-132: Dosimetric Impact of Positioning Errors in Hypo-Fractionated Cranial Radiation Therapy Using Frameless Stereotactic BrainLAB System

    SciTech Connect (OSTI)

    Keeling, V; Jin, H; Ali, I; Ahmad, S [Oklahoma Univ. Health Science Ctr., Oklahoma City, OK (United States)

    2014-06-01

    Purpose: To determine dosimetric impact of positioning errors in the stereotactic hypo-fractionated treatment of intracranial lesions using 3Dtransaltional and 3D-rotational corrections (6D) frameless BrainLAB ExacTrac X-Ray system. Methods: 20 cranial lesions, treated in 3 or 5 fractions, were selected. An infrared (IR) optical positioning system was employed for initial patient setup followed by stereoscopic kV X-ray radiographs for position verification. 6D-translational and rotational shifts were determined to correct patient position. If these shifts were above tolerance (0.7 mm translational and 1° rotational), corrections were applied and another set of X-rays was taken to verify patient position. Dosimetric impact (D95, Dmin, Dmax, and Dmean of planning target volume (PTV) compared to original plans) of positioning errors for initial IR setup (XC: Xray Correction) and post-correction (XV: X-ray Verification) was determined in a treatment planning system using a method proposed by Yue et al. (Med. Phys. 33, 21-31 (2006)) with 3D-translational errors only and 6D-translational and rotational errors. Results: Absolute mean translational errors (±standard deviation) for total 92 fractions (XC/XV) were 0.79±0.88/0.19±0.15 mm (lateral), 1.66±1.71/0.18 ±0.16 mm (longitudinal), 1.95±1.18/0.15±0.14 mm (vertical) and rotational errors were 0.61±0.47/0.17±0.15° (pitch), 0.55±0.49/0.16±0.24° (roll), and 0.68±0.73/0.16±0.15° (yaw). The average changes (loss of coverage) in D95, Dmin, Dmax, and Dmean were 4.5±7.3/0.1±0.2%, 17.8±22.5/1.1±2.5%, 0.4±1.4/0.1±0.3%, and 0.9±1.7/0.0±0.1% using 6Dshifts and 3.1±5.5/0.0±0.1%, 14.2±20.3/0.8±1.7%, 0.0±1.2/0.1±0.3%, and 0.7±1.4/0.0±0.1% using 3D-translational shifts only. The setup corrections (XC-XV) improved the PTV coverage by 4.4±7.3% (D95) and 16.7±23.5% (Dmin) using 6D adjustment. Strong correlations were observed between translation errors and deviations in dose coverage for XC. Conclusion: The initial BrainLAB IR system based on rigidity of the mask-frame setup is not sufficient for accurate stereotactic positioning; however, with X-ray imageguidance sub-millimeter accuracy is achieved with negligible deviations in dose coverage. The angular corrections (mean angle summation=1.84°) are important and cause considerable deviations in dose coverage.

  14. One-Dimensional Analysis of Thermal Stratification in AHTR and SFR Coolant Pools

    SciTech Connect (OSTI)

    Haihua Zhao; Per F. Peterson

    2007-10-01

    Thermal stratification phenomena are very common in pool type reactor systems, such as the liquid-salt cooled Advanced High Temperature Reactor (AHTR) and liquid-metal cooled fast reactor systems such as the Sodium Fast Reactor (SFR). It is important to accurately predict the temperature and density distributions both for design optimation and accident analysis. Current major reactor system analysis codes such as RELAP5 (for LWR’s, and recently extended to analyze high temperature reactors), TRAC (for LWR’s), and SASSYS (for liquid metal fast reactors) only provide lumped-volume based models which can only give very approximate results and can only handle simple cases with one mixing source. While 2-D or 3-D CFD methods can be used to analyze simple configurations, these methods require very fine grid resolution to resolve thin substructures such as jets and wall boundaries, yet such fine grid resolution is difficult or impossible to provide for studying the reactor response to transients due to computational expense. Therefore, new methods are needed to support design optimization and safety analysis of Generation IV pool type reactor systems. Previous scaling has shown that stratified mixing processes in large stably stratified enclosures can be described using one-dimensional differential equations, with the vertical transport by free and wall jets modeled using standard integral techniques. This allows very large reductions in computational effort compared to three-dimensional numerical modeling of turbulent mixing in large enclosures. The BMIX++ (Berkeley mechanistic MIXing code in C++) code was originally developed at UC Berkeley to implement such ideas. This code solves mixing and heat transfer problems in stably stratified enclosures. The code uses a Lagrangian approach to solve 1-D transient governing equations for the ambient fluid and uses analytical or 1-D integral models to compute substructures. By including liquid salt properties, BMIX++ code is extended to analyze liquid salt pool systems in the current AHTR design, to provide an example of its application. Similar analysis is possible for liquid-metal cooled reactors. The current AHTR baseline design uses a large buffer salt tank to provide more thermal inertial and safety margin. Reactor vessel, intermediate heat exchangers, pool reactor auxiliary cooling system heat exchangers (PHX), and direct reactor auxiliary cooling system heat exchangers (DHX) are all immerged in the buffer salt pool. These structures provide major driving sources for vertical mixing and thermal stratification. Predication of the temperature distribution within the buffer salt tank directly affects the major safety systems design, such as the PHX and DHX, safety analysis results, and structure thermal stresses analysis. The BMIX++ code is used to predict mixing and thermal stratification in this pool system. This example shows the potential of 1-D analysis methods and BMIX++ to be included in system analysis codes for pool type of Gen-IV reactor systems.

  15. Search for Associated Chargino-Neutralino Production in Proton-Antiproton Collisions at 1.96 TeV

    SciTech Connect (OSTI)

    Blumenschein, Ulla

    2005-08-01

    The search for a fundamental theory of matter and forces in the universe has ever since attracted the interest of physicists. The large success of the gauge theories in the description of low-energy phenomena nourishes the hope that gauge symmetries are the clue to a unified description of all fundamental processes at high energy scales. Particle collision experiments of the past decades have probed the structure of matter with increasing resolution. The phenomena observed in collision experiments at current energy scales are described with a large precision by the Standard Model of particle physics. Nevertheless, many open questions in the Standard Model suggest that it is an effective low-energy theory of a more fundamental theory: the numbers of free parameters of the model, the numbers of generations, the hierarchy between the electroweak scale and the Planck scale, the pending integration of gravity and the evolution of the strengths of the fundamental forces at large energy regimes. In addition, recent cosmological data suggest that the density of ordinary matter which is described by the Standard Model, corresponds only to a small fraction of the matter density in the universe. Many of the above mentioned problems are addressed by an extension of the Standard Model that is based on an additional internal symmetry, the Supersymmetry (SUSY) of fermions and bosons. It predicts the existence of a partner for each known fundamental particle with the same quantum numbers but different spin. Supersymmetry must be broken at the energy regime of present collider experiments which leads to different masses of Standard Model particles and their super-partners. Low-mass supersymmetric partners are expected to be produced at a sufficient rate at present or future collider experiments. In the analysis performed in this thesis, it is assumed that SUSY particles decay into their Standard Model partners and the stable lightest supersymmetric particle, which is only weakly interacting, carrying away energy and momentum and leading to detector signatures with large missing energy. Supersymmetric particles have been searched for at the electron-positron collider LEP up to the kinematic limit. No evidence for these particles has been observed which results in lower limits on their masses. Additional constraints stem from precision measurements of quantities, which are sensitive to corrections from SUSY particles and from the search for dark matter in cosmological experiments. The search for SUSY particles beyond the reach of LEP is continued at larger energy regimes at present and future hadron colliders. In its second phase of data taking (Run II), the center-of-mass energy of the proton-antiproton collider Tevatron at Fermilab has been raised and the luminosity has been increased considerably. The D0 experiment, one of the two Tevatron experiments, has been upgraded accordingly. The Tevatron collider allows to probe a substantial SUSY mass range beyond the LEP limits. The search will be continued at the Large Hadron Collider (LHC) which is presently being constructed at the European Research laboratory for particle physics CERN in Geneva. At hadron colliders the supersymmetric partners of quarks and gluons are copiously produced in strong interactions, provided they are light enough. Within most of the established SUSY models, these particles are too heavy to be produced at a sufficient rate at the Tevatron collider and the production of the lighter super-partners of the Higgs and gauge bosons, the charginos and neutralinos, becomes an important source of SUSY particles. Decays of these particles result in final states with leptons or hadrons and large missing energy. Leptonic final states can be separated more easily from the large background of hadronic Standard Model processes. A search for the associated production of the lightest chargino and the second lightest neutralino has been performed in final states with two electrons, an additional lepton and large missing transverse energy using data collected with the D0 detector fro

  16. Application of Bomb Radiocarbon Chronologies to Shortfin Mako (Isurus oxyrinchus)

    SciTech Connect (OSTI)

    Ardizzone, D; Cailliet, G M; Natanson, L J; Andrews, A H; Kerr, L A; Brown, T A

    2007-07-16

    There is an ongoing disagreement regarding the aging of the shortfin mako due to a difference of interpretation in the periodic deposition of vertebral growth band pairs, especially for the larger size classes. Using analysis of length-month information, tagging data, and length-frequency analysis, concluded that two band pairs were formed in the vertebral centrum every year (biannual band-pair interpretation). Cailliet et al. (1983), however, presented growth parameters based on the common assumption that one band pair forms annually (annual band-pair interpretation). Therefore, growth rates obtained by Pratt & Casey (1983) were twice that of Cailliet et al. (1983) and could lead to age discrepancies of about 15 years for maximum estimated ages on the order of 30 from the annual band-pair interpretation. Serious consequences in the population dynamics could occur for this species if inputs are based on an invalid age interpretation. The latest Fishery Management Plan (FMP) for Highly Migratory Species (HMS), for example, adopted the biannual band pair deposition hypothesis because it apparently fit the observed growth patterns best (Pacific Fishery Management Council 2003). However, the ongoing uncertainty about the aging of the shortfin mako was acknowledged and it was recommended that an endeavor to resolve this issue be made. Since 1983, five additional studies on the age and growth of the shortfin mako have been conducted (Chan 2001, Campana et al. 2002, Hsu 2003, Ribot-Carballal et al. 2005, Bishop et al. 2006). Using Marginal Increment Ratio (MIR), Hsu (2003) indicated the formation of annual translucent bands from July to September in western North Pacific Ocean shortfin makos. Using Marginal Increment Analysis (MIA) Ribot-Carballal et al. (2005) supported the annual band-pair interpretation for 109 shortfin makos collected in the eastern Pacific Ocean. Although the study provided support for annual band-pair deposition, no statistical test was performed and the number of samples for MIA analysis was insufficient for some months. Hence, unequivocal validation of shortfin mako age estimates has yet to be accomplished. Atmospheric testing of thermonuclear devices in the 1950s and 1960s effectively doubled the natural atmospheric radiocarbon ({sup 14}C). The elevated {sup 14}C levels were first recorded in 1957-58, with a peak around 1963. As a consequence, {sup 14}C entered the ocean through gas exchange with the atmosphere at the ocean surface and in terrestrial runoff. Despite variable oceanographic conditions, a worldwide rise of the bomb {sup 14}C signal entered the ocean mixed layer as dissolved inorganic carbon (DIC) in 1957-58. The large amounts of {sup 14}C released from the bomb tests produced a signature that can be followed through time, throughout the marine food web, and into deeper waters. The marked increase of radiocarbon levels was first measured in the DIC of seawater and in biogenic marine carbonates of hermatypic corals in Florida. Subsequently, this record was documented in corals from other regions and in the thallus of rhodoliths. The accumulation of radiocarbon in the hard parts of most marine organisms in the mixed layer (such as fish otoliths and bivalves) was synchronous with the coral time-series. This technique has been used to validate age estimates and longevity of numerous bony fishes to date, as well as to establish bomb radiocarbon chronologies from different oceans. In the first application of this technique to lamnoid sharks, validated annual band-pair deposition in vertebral growth bands for the porbeagle (Lamna nasus) aged up to 26 years. Radiocarbon values from samples obtained from 15 porbeagle caught in the western North Atlantic Ocean (some of which were known-age) produced a chronology similar in magnitude to the reference carbonate chronology for that region. The observed phase shift of about 3 years was attributed to different sources of carbon between vertebrae and those for otoliths, bivalves and corals. In the same study by Campana et al. (2002), a single vertebra fro