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Sample records for bridge corey butte

  1. Ray J. Corey- Biography

    Broader source: Energy.gov [DOE]

    Ray Corey currently serves as the Assistance Manager for Safety and Environment at the DOE Richland Operations office (RL).

  2. Corey Casper, MD Head, Program in Global Oncology

    E-Print Network [OSTI]

    Brent, Roger

    Corey Casper, MD Head, Program in Global Oncology Member, Vaccine and Infectious Disease and Public of Washington Dr. Casper focuses on infection-related cancers and cancer in low-resource settings. He is the Head of the Program in Global Oncology at the Fred Hutchinson Cancer Research Center, where he is also

  3. RoSCAR: Robot Stock Car Autonomous Racing , Corey Montella

    E-Print Network [OSTI]

    Spletzer, John R.

    RoSCAR: Robot Stock Car Autonomous Racing Kyle Hart , Corey Montella , Georges Petitpas , DylanSCAR. The platform is based on a 1/10-scale short track race car, integrated with an on-board desktop-class computer of Computer Science and Engineering Department of Mechanical Engineering ABSTRACT In this paper, we present

  4. Burley Butte | 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 on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin:PontiacInformationAssessmentExplorationButte Jump to:

  5. Laser Stabilization for Quantum Computing with Trapped Barium ions Corey Adams

    E-Print Network [OSTI]

    Blinov, Boris

    Laser Stabilization for Quantum Computing with Trapped Barium ions Corey Adams University of Rochester (Dated: November 11, 2009) ABSTRACT The goal of this project was to stabilize a laser cooling system used to trap and cool Ba+ ions used for quantum computation research. The lasers, at 650 and 985

  6. Costs and Benefits in Perceptual Categorization W. Todd Maddox and Corey J. Bohil

    E-Print Network [OSTI]

    Maddox, W. Todd

    Costs and Benefits in Perceptual Categorization W. Todd Maddox and Corey J. Bohil University the category costs and benefits were manipulated across conditions, and costs were either zero or non-zero. The cost-benefit structures were selected so that performance across conditions was equivalent with respect

  7. Butte, Montana: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County, California: Energy Resources Jump to: navigation, searchButte,

  8. Kac polymers Paolo Butt`a

    E-Print Network [OSTI]

    Procacci, Aldo

    Kac polymers Paolo Butt`a Aldo Procacci Benedetto Scoppola Abstract We show how a polymer in two- sidered on the appropriate scale. Key words: Polymers, Kac potentials, phase transition. Running title: Kac polymers Dedicated to a Marzio Cassandro's birthday. 1 Introduction In the last two decades

  9. Comparison of CO2 trapping in highly heterogeneous reservoirs with Brooks-Corey and van Genuchten type capillary pressure curves

    E-Print Network [OSTI]

    Gershenzon, Naum I; Dominic, David F; Mehnert, Edward; Okwen, Roland T

    2015-01-01

    Geological heterogeneities essentially affect the dynamics of a CO2 plume in subsurface environments. Previously we showed how the dynamics of a CO2 plume is influenced by the multi-scale stratal architecture in deep saline reservoirs. The results strongly suggest that representing small-scale features is critical to understanding capillary trapping processes. Here we present the result of simulation of CO2 trapping using two different conventional approaches, i.e. Brooks-Corey and van Genuchten, for the capillary pressure curves. We showed that capillary trapping and dissolution rates are very different for the Brooks-Corey and van Genuchten approaches when heterogeneity and hysteresis are both represented.

  10. Dr. Corey Cohn | U.S. DOE Office of Science (SC)

    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 theCovalentLaboratory |Sector FullDOE Office10 Jan2 InCorey Cohn Deputy

  11. Glass Buttes Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainable UrbanKentucky:BoreOpenGilliam County, Oregon:GlacierGlasco,Glass Buttes

  12. Glass Buttes Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEniaElectric Jump to:GerGlacialGlacialGlass Buttes

  13. Horse Butte Wind Project | 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 on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea,Magazine Jump to:II Wind Farm JumpHorse Butte

  14. Butte Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County, California: Energy Resources Jump to: navigation, search

  15. Bridge permeameter

    DOE Patents [OSTI]

    Graf, Darin C. (Edgewood, NM); Warpinski, Norman R. (Albuquerque, NM)

    1996-01-01

    A system for single-phase, steady-state permeability measurements of porous rock utilizes a fluid bridge arrangement analogous to a Wheatstone bridge. The arms of the bridge contain the sample and calibrated flow resistors.

  16. SUTTER BASIN, SUTTER & BUTTE COUNTIES, CA FLOOD RISK MANAGEMENT PROJECT

    E-Print Network [OSTI]

    US Army Corps of Engineers

    SUTTER BASIN, SUTTER & BUTTE COUNTIES, CA FLOOD RISK MANAGEMENT PROJECT 22 October 2013 ABSTRACT: The purpose of the Sutter Basin Project is to reduce overall flood risk to the Sutter Basin study area the risk to property damage due to flooding to the Sutter Basin area located in the Sutter and Butte

  17. Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

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

    Zemach, Ezra

    Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

  18. Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

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

    Zemach, Ezra

    2010-01-01

    Glass Buttes Exploration and Drilling: 2010 Geothermal Technologies Program Peer Review Presentation, Walsh, et al, Ormat

  19. Bridge permeameter

    DOE Patents [OSTI]

    Graf, D.C.; Warpinski, N.R.

    1996-08-13

    A system is described for single-phase, steady-state permeability measurements of porous rock which utilizes a fluid bridge arrangement analogous to a Wheatstone bridge. The arms of the bridge contain the sample and calibrated flow resistors. 8 figs.

  20. Crested Butte, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation EU-UNDP ClimatePublic SchoolsCrested Butte,

  1. CORRECTION OF BUTT-WELDING INDUCED DISTORTIONS BY LASER FORMING

    E-Print Network [OSTI]

    Yao, Y. Lawrence

    CORRECTION OF BUTT-WELDING INDUCED DISTORTIONS BY LASER FORMING Peng Cheng, Andrew J. Birnbaum, Y Egland Technology and Solutions Division Caterpillar Inc. Peoria, IL KEYWORDS Welding, Distortion, Correction, Laser Forming ABSTRACT Welding-induced distortion is an intrinsic phenomenon arising due

  2. Foot Bridge 

    E-Print Network [OSTI]

    Unknown

    2011-09-05

    The objective of this thesis is to determine fatigue stresses in the stringer to floor beam connections of through plate girder (TPG) and through truss (TT) bridges in order to predict failure. Field observations by the Association of American...

  3. EIS-0077-S: Bonneville Power Administration Crow Butte Slough Crossing

    Broader source: Energy.gov [DOE]

    The Bonneville Power Administration developed this SEIS to evaluate potential impacts resulting from construction of a 4,700-foot segment of the Ashe-Slatt transmission line at Crow Butte Slough, overhead on towers on the existing right-of-way. This SEIS is a supplement to DOE/EIS-0077, Ashe-Slatt (Pebble Springs) 500-kilovolt Transmission Line, originally filed as FES 75-79.

  4. Red Butte, Wyoming: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/WaterEnergy MarketingNewOpenRecycled EnergyButte, Wyoming:

  5. The Western Environmental Technology Office (WETO), Butte, Montana. Technology summary

    SciTech Connect (OSTI)

    NONE

    1996-03-01

    The Western Environmental Technology Office (WETO) is a multi-purpose engineering test facility located in Butte, Montana, and is managed by MSE, Inc. WETO seeks to contribute to environmental research by emphasizing projects to develop heavy metals removal and recovery processes, thermal vitrification systems, and waste minimization/pollution prevention technologies. WETO`s environmental technology research and testing activities focus on the recovery of usable resources from waste. In one of WETO`s areas of focus, groundwater contamination, water from the Berkeley Pit, located near the WETO site, is being used in demonstrations directed toward the recovery of potable water and metal from the heavy metal-bearing water. The Berkeley Pit is part of an inactive copper mine near Butte that was once part of the nation`s largest open-pit mining operation. The Pit contains approximately 25 billion gallons of Berkeley Pit groundwater and surface water containing many dissolved minerals. As part of DOE/OST`s Resource Recovery Project (RRP), technologies are being demonstrated to not only clean the contaminated water but to recover metal values such as copper, zinc, and iron with an estimated gross value of more than $100 million. When recovered, the Berkeley Pit waters could benefit the entire Butte valley with new water resources for fisheries, irrigation, municipal, and industrial use. At WETO, the emphasis is on environmental technology development and commercialization activities, which will focus on mine cleanup, waste treatment, resource recovery, and water resource management.

  6. Bridges and Bridging: Infrastructure and the Arts

    E-Print Network [OSTI]

    Reiter, Wellington

    1994-01-01

    o © Paolo Rosselli. The Brooklyn Bridge is not art. I t is athe passage of the Brooklyn Bridge from fact to symbol. Suchin their interpretations of the Brooklyn Bridge. To observe

  7. Butts County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank, Maine:Kansas: Energy Resources Jump to: navigation,ButlerSouthJumpButts

  8. Butte County, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County, California: Energy Resources Jump to: navigation, search Equivalent

  9. SAMP Bridge Mark Taylor

    E-Print Network [OSTI]

    Taylor, Mark

    SAMP Bridge Mark Taylor (AstroGrid, Bristol) IVOA Interop Meeting, ESO 9 November 2009 $Id: bridge/9 #12;Operation 1. Two independent hubs are running 2. Bridge starts up, connects to both hubs Mark are running 2. Bridge starts up, connects to both hubs 3. Proxies for Hub 2 clients, controlled by Bridge

  10. The Western Environmental Technology Office (WETO), Butte, Montana, technology summary

    SciTech Connect (OSTI)

    Not Available

    1994-09-01

    This document has been prepared by the DOE Environmental Management (EM) Office of Technology Development (OTD) to highlight its research, development, demonstration, testing, and evaluation activities funded through the Western Environmental Technology Office (WETO) in Butte, Montana. Technologies and processes described have the potential to enhance DOE`s cleanup and waste management efforts, as well as improve US industry`s competitiveness in global environmental markets. WETO`s environmental technology research and testing activities focus on the recovery of useable resources from waste. Environmental technology development and commercialization activities will focus on mine cleanup, waste treatment, resource recovery, and water resource management. Since the site has no record of radioactive material use and no history of environmental contamination/remediation activities, DOE-EM can concentrate on performing developmental and demonstration activities without the demands of regulatory requirements and schedules. Thus, WETO will serve as a national resource for the development of new and innovative environmental technologies.

  11. Sagamore Bridge Richard Mitchell

    E-Print Network [OSTI]

    Nagurney, Anna

    Sagamore Bridge Richard Mitchell Justin Murphy (DJ) Dennis Morin Jr. #12;Critical Link in a Fragile for Infrastructure Two cantilever bridges and a railroad bridge were constructed Drawbacks: Provided narrow passageways for ships Traffic delays when the bridge was raised #12;Canal Transfer of Ownership Belmont

  12. Effect of welding on impact toughness of butt-joints in a titanium alloy

    E-Print Network [OSTI]

    Zhou, Wei

    Effect of welding on impact toughness of butt-joints in a titanium alloy Wei Zhou a, *, K.G. Chew b Abstract Impact toughness of a gas tungsten arc welded TiÁ/6AlÁ/4V alloy butt-joint was evaluated at room located either in the parent metal, in the heat- affected zone (HAZ), or in the weld metal. Optical

  13. Implementation of ATM Endpoint Congestion Control Protocols Prashant R. Chandra, Allan L. Fisher, Corey Kosak and Peter A. Steenkiste

    E-Print Network [OSTI]

    Steenkiste, Peter

    @cs.cmu.edu. #12; PCI ATM ASIC UTOPIA SRAM Bridge DRAM i960 OC3 / OC12 Figure 1: Credit Net adapter architecture implementations are also possible with modest hardware support. 2. Credit Net Adapter The architecture of the Credit Net adapter is shown in Figure 1. The adapter contains an ATM ASIC, designed by Intel Architecture

  14. STEM Bridge Scholarship Program

    E-Print Network [OSTI]

    Virginia Tech

    2015-2016 STEM Bridge Scholarship Program Virginia Space Grant Consortium (VSGC) provides renewable STEM Bridge Scholarships of $1,000 to sophomore students from any federally recognized minority group of the five Virginia Space Grant member universities. As a STEM Bridge Scholar, students are welcomed

  15. Dynamic Testing of Alfred Zampa Memorial Bridge

    E-Print Network [OSTI]

    2008-01-01

    twin curved cable-stayed bridges. ” Earthquake Engineeringfor condition assessment of bridge bents. ” Journal ofprestressed concrete bridges and numerical verification. ”

  16. Building bridges for fish

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

    Building-bridges-for-fish Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects & Initiatives...

  17. Semiconductor bridge (SCB) detonator

    DOE Patents [OSTI]

    Bickes, Jr., Robert W. (Albuquerque, NM); Grubelich, Mark C. (Albuquerque, NM)

    1999-01-01

    The present invention is a low-energy detonator for high-density secondary-explosive materials initiated by a semiconductor bridge igniter that comprises a pair of electrically conductive lands connected by a semiconductor bridge. The semiconductor bridge is in operational or direct contact with the explosive material, whereby current flowing through the semiconductor bridge causes initiation of the explosive material. Header wires connected to the electrically-conductive lands and electrical feed-throughs of the header posts of explosive devices, are substantially coaxial to the direction of current flow through the SCB, i.e., substantially coaxial to the SCB length.

  18. Semiconductor bridge (SCB) detonator

    DOE Patents [OSTI]

    Bickes, R.W. Jr.; Grubelich, M.C.

    1999-01-19

    The present invention is a low-energy detonator for high-density secondary-explosive materials initiated by a semiconductor bridge (SCB) igniter that comprises a pair of electrically conductive lands connected by a semiconductor bridge. The semiconductor bridge is in operational or direct contact with the explosive material, whereby current flowing through the semiconductor bridge causes initiation of the explosive material. Header wires connected to the electrically-conductive lands and electrical feed-throughs of the header posts of explosive devices, are substantially coaxial to the direction of current flow through the SCB, i.e., substantially coaxial to the SCB length. 3 figs.

  19. Computational Modeling of Microstructural-Evolution in AISI 1005 Steel During Gas Metal Arc Butt Welding

    E-Print Network [OSTI]

    Grujicic, Mica

    Welding M. Grujicic, S. Ramaswami, J.S. Snipes, R. Yavari, A. Arakere, C.-F. Yen, and B.A. Cheeseman-mechanical finite-element procedure is developed to model conventional gas metal arc welding (GMAW) butt of the workpiece and the weld temperature- dependent and by allowing the potential work of plastic deformation

  20. Modeling of AA5083 Material-Microstructure Evolution During Butt Friction-Stir Welding

    E-Print Network [OSTI]

    Grujicic, Mica

    Modeling of AA5083 Material-Microstructure Evolution During Butt Friction-Stir Welding M. Grujicic yet a fairly comprehensive overview of the friction stir welding (FSW) process is provided-element procedure developed in our prior study. Particular attention is given to proper modeling of the welding work

  1. Bridge Funding Program 2014 Recipients

    E-Print Network [OSTI]

    Finley Jr., Russell L.

    Bridge Funding Program 2014 Recipients MARCH Patrick Mueller, Physiology Inactivity and Enhanced time Xiaoyan Han, Electrical and Computer Engineering Bridge Funding on Sonic Infrared Imaging Non War Illness #12;Bridge Funding Program 2013 Recipients MARCH Robert Akins, Biochemistry and Molecular

  2. Active-bridge oscillator

    DOE Patents [OSTI]

    Wessendorf, Kurt O. (Albuquerque, NM)

    2001-01-01

    An active bridge oscillator is formed from a differential amplifier where positive feedback is a function of the impedance of one of the gain elements and a relatively low value common emitter resistance. This use of the nonlinear transistor parameter h stabilizes the output and eliminates the need for ALC circuits common to other bridge oscillators.

  3. The floating water bridge The floating water bridge

    E-Print Network [OSTI]

    Podgornik, Rudolf

    The floating water bridge The floating water bridge Elmar C. Fuchs1 , Jakob Woisetschläger2 , Karl, a stable water connection forms spontaneously, giving the impression of a floating water bridge. A detailed this bridge. 1. Introduction Water undoubtedly is the most important chemical substance in the world. Many

  4. SunShot BRIDGE Program

    Broader source: Energy.gov [DOE]

    This presentation summarizes the webinar, held in April of 2012, for the BRIDGE funding opportunity.

  5. Bridging Research Interactions Through Collaborative Development...

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

    Bridging Research Interactions Through Collaborative Development Grants in Energy Bridging Research Interactions Through Collaborative Development Grants in Energy The DOE Bridging...

  6. FMI Log At Glass Buttes Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdisto Electric Coop,Erosion FlumeEventFAOFBASSESSMENTInformation

  7. Gas Sampling At Glass Buttes Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdistoWhiskeyFootprintGEXA Corp. (Delaware)GalvestonWind

  8. Compound and Elemental Analysis At Glass Buttes Area (DOE GTP) | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower Ventures JumpCommercial Jump to:TechnologyEnergyEnergy| Open

  9. Journal of Bridge Engineering

    E-Print Network [OSTI]

    Webb, G. T.; Vardanega, P. J.; Middleton, C. R.

    2014-12-17

    was submitted on May 31, 2014; approved on October 21, 2014; published online on December 17, 2014. Discussion period open until May 17, 2015; separate discussions must be submitted for individual papers. This paper is part of the Journal of Bridge Engineering...

  10. SURROGATE BRIDGE FREEZING SRDJAN JANKOVIC

    E-Print Network [OSTI]

    for advanced bridge deck heating control strategies. In order to develop the "smart" control system, some dataSURROGATE BRIDGE FREEZING SENSORS by SRDJAN JANKOVIC Bachelor of Science University of Belgrade: Stillwater, Oklahoma Title of Study: SURROGATE BRIDGE FREEZING SENSORS Pages in Study: 121 Candidate

  11. Molecular engineering with bridged polysilsesquioxanes

    SciTech Connect (OSTI)

    LOY,DOUGLAS A.; SHEA,KENNETH J.

    2000-05-09

    Bridged polysilsesquioxanes are a class of hybrid organic-inorganic materials that permit molecular engineering of bulk properties including porosity. Prepared by sol-gel polymerization of monomers with two or more trialkoxysilyl groups, the materials are highly cross-linked amorphous polymers that are readily obtained as gels. The bridging configuration of the hydrocarbon group insures that network polymers are readily formed and that the organic functionality is homogeneously distributed throughout the polymeric scaffolding at the molecular level. This permits the bulk properties, including surface area, pore size, and dielectric constant to be engineered through the selection of the bridging organic group. Numerous bridging groups have been incorporated. This presentation will focus on the effects that the length, flexibility, and substitution geometry of the hydrocarbon bridging groups have on the properties of the resulting bridged polysilsesquioxanes. Details of the preparation, characterization, and some structure property relationships of these bridged polysilsesquioxanes will be given.

  12. EA-1925: Midnight Point and Mahogany Geothermal Exploration Projects, Glass Buttes, Oregon

    Broader source: Energy.gov [DOE]

    This EA evaluates Ormat Nevada, Inc.’s (Ormat’s) proposed geothermal project consists of drilling up to 16 wells for geothermal exploration approximately 70 miles southeast of Bend, Oregon and 50 miles northwest of Burns, Oregon just south of U.S. Highway 20. The proposed project includes three distinct drilling areas. Up to three wells would be drilled on lands managed by the Bureau of Land Management (BLM) Prineville District (Mahogany), up to ten wells would be drilled on lands managed by the BLM Burns District (Midnight Point), and up to three wells would be drilled on private land located adjacent to the federal geothermal leases west of Glass Butte (Private Lands). DOE funding would be associated with three of the sixteen proposed wells. BLM is the lead agency and DOE is participating as a cooperating agency.

  13. The Western Environmental Technology Office (WETO), Butte, Montana. Technology summary (Revised)

    SciTech Connect (OSTI)

    NONE

    1996-03-01

    This document has been prepared by the US Department of Energy`s (DOE`s) Office of Environmental Management (EM) Office of Science and Technology (OST) to highlight its research, development, demonstration, testing, and evaluation (RDDT&E) activities funded through the Western environmental Technology Office (WETO) in Butte, Montana. Technologies and processes described in this document have the potential to enhance DOE`s cleanup and waste management efforts, as well as improve US industry`s competitiveness in global environmental markets. The information presented in this document has been assembled from recently produced OST documents that highlight technology development activities within each of the OST program elements and Focus Areas. This document presents one in a series for each of DOE`s Operations Office and Energy Technology Centers.

  14. Corey Clemons Genomics and Medicine

    E-Print Network [OSTI]

    Brutlag, Doug

    the Human Genome Project was completed. The goal of the HGP was to sequence the entire human genome in order to the private sector.i One unintended consequence of the HGP is that it actually challenged previously held with previously misunderstood conditions and ailments. Some practical uses of the HGP are the development

  15. The Urgent Need for Carbon Dioxide Sequestration Klaus S. Lackner, Darryl P. Butt, Reed Jensen and Hans Ziock

    E-Print Network [OSTI]

    1 The Urgent Need for Carbon Dioxide Sequestration Klaus S. Lackner, Darryl P. Butt, Reed Jensen in this field. This memo explains why the development of a viable sequestration technology is a long term stra- tegic goal of utmost importance and why sequestration provides a goal worthy of the attention

  16. Wind-induced dynamic response of bridges

    E-Print Network [OSTI]

    Rousseau, Guillaume, 1982-

    2004-01-01

    Wind loading has long played a significant role in bridge design. Some spectacular failures, such as the Tay Bridge (Scotland, 1879), or the Tacoma Narrows Bridge (Washington State, 1940) acted as a painful reminder to ...

  17. Must a Bridge Be Beautiful Too?

    E-Print Network [OSTI]

    Dresden, Matthew

    2006-01-01

    Sloane, “The First Covered Bridge in America,” Geographical1959). D. B. Steinman, “How Bridges Have Increased Man’sMust a Bridge Be Beautiful Too? B Y M AT T H E W D R E S D E

  18. Current Activities Assessing Butt Fusion Joint Integrity in High Density Polyethylene Piping

    SciTech Connect (OSTI)

    Crawford, Susan L.; Cinson, Anthony D.; Doctor, Steven R.; Denslow, Kayte M.

    2012-09-01

    The Pacific Northwest National Laboratory (PNNL) in Richland, Washington, conducted initial studies to evaluate the effectiveness of nondestructive examinations (NDE) coupled with mechanical testing for assessing butt fusion joint integrity in high density polyethylene (HDPE) pipe. The work provided insightful information to the United States Nuclear Regulatory Commission (NRC) on the effectiveness of volumetric inspection techniques for detecting lack of fusion (LOF) conditions in the fusion joints. HDPE has been installed on a limited basis in American Society of Mechanical Engineers (ASME) Class 3, buried piping systems at several operating U.S. nuclear power plants and has been proposed for use in new construction. A comparison was made between the results from ultrasonic and microwave nondestructive examinations and the results from mechanical destructive evaluations, specifically the high-speed tensile test and the side-bend test, for determining joint integrity. The data comparison revealed that none of the NDE techniques detected all of the lack-of-fusion conditions that were revealed by the destructive tests. Follow-on work has recently been initiated at PNNL to accurately characterize the NDE responses from machined flaws of varying size and location in PE 4710 materials as well as the LOF condition. This effort is directed at quantifying the ability of volumetric NDE techniques to detect flaws in relation to the critical flaw size associated with joint integrity. A status of these latest investigations is presented.

  19. Economic Implications of Farmer Storage of Surface Water in Federal Projects: Elephant Butte Irrigahon District, Dona Ana and Sierra Counties, New Mexico 

    E-Print Network [OSTI]

    Ellis, J. R.; Teague, P. W.; Lacewell, R. D.

    1982-01-01

    This study estimated the expected regional impact and economic feasibility of a proposed water accumulation or water saving option for agricultural producers operating in the Elephant Butte Irrigation District in southern ...

  20. TAYLOR BRIDGE -FIELD ASSESSMENT Doug STEWARTi

    E-Print Network [OSTI]

    the Taylor "smart" Bridge utilizing fibre reinforced polymer (FRP) reinforcing materials as the primaryTAYLOR BRIDGE - FIELD ASSESSMENT Doug STEWARTi , Emile SHEHATAi , Gamil TADROS2 and Sami RIZKALLA2 reinforcement for precast concrete bridge girders, concrete bridge deck, and traffic barrier. To provide

  1. Mineral bridges in nacre revisited

    E-Print Network [OSTI]

    Antonio G. Checa; Julyan H. E. Cartwright; Marc-Georg Willinger

    2012-07-20

    We confirm with high-resolution techniques the existence of mineral bridges between superposed nacre tablets. In the towered nacre of both gastropods and the cephalopod Nautilus there are large bridges aligned along the tower axes, corresponding to gaps (150-200 nm) in the interlamellar membranes. Gaps are produced by the interaction of the nascent tablets with a surface membrane that covers the nacre compartment. In the terraced nacre of bivalves bridges associated with elongated gaps in the interlamellar membrane (> 100 nm) have mainly been found at or close to the edges of superposed parental tablets. To explain this placement, we hypothesize that the interlamellar membrane breaks due to differences in osmotic pressure across it when the interlamellar space below becomes reduced at an advanced stage of calcification. In no cases are the minor connections between superimposed tablets (mineral bridges, found to be such.

  2. WORLD WISE'99-Winnipeg, Manitoba Taylor Bridge -A Bridge For the 21st

    E-Print Network [OSTI]

    and build the Taylor "smart" Bridge utilizing fibre reinforced polymer (FRP) reinforcing materialsWORLD WISE'99- Winnipeg, Manitoba Taylor Bridge - A Bridge For the 21st Century Taylor Bridge - A Bridge For the 21st Century Emile ShehataI, Rick Haldane-Wilsone1 , Doug Stewart!, Gamil Tadros2 and Sami

  3. GAUVREAU, The Three Myths of Bridge Aesthetics, 1/8 THE THREE MYTHS OF BRIDGE AESTHETICS

    E-Print Network [OSTI]

    Gauvreau, Paul

    GAUVREAU, The Three Myths of Bridge Aesthetics, 1/8 THE THREE MYTHS OF BRIDGE AESTHETICS Paul wisdom on bridge aesthetics. If bridge design is to be recognized as a valid and distinct means of artistic expression, then bridges must reflect the truths that define the fundamental essence shared by all

  4. Bridge Funding Bridge funding is designed to stabilize meritorious research programs that have lost extramural

    E-Print Network [OSTI]

    Brownstone, Rob

    Bridge Funding Overview: Bridge funding is designed to stabilize meritorious research programs that have lost extramural funding. Bridge funds are for one year and are intended to enhance the likelihood by the applicant's Department/Division. Applicants may only request bridge funding once per calendar year. Bridge

  5. The Higgs Bridge

    E-Print Network [OSTI]

    Roland E. Allen

    2013-12-01

    The particle recently discovered at the Large Hadron Collider near Geneva is almost certainly a Higgs boson, the long-sought completion of the Standard Model of particle physics. But this discovery, an achievement by more than six thousand scientists (including students), is actually much more than a mere capstone of the Standard Model. It instead represents a bridge from the Standard Model to exciting discoveries of the future, at higher energies or in other experiments, and to the properties of matter at very low temperatures. The mere existence of a particle with zero spin implies a need for new physics, with the most likely candidate being supersymmetry, which requires that every known particle has a superpartner yet to be discovered. And phenomena similar to the Higgs are seen in superconducting metals and superfluid gases at low temperatures, which extend down to a millionth or even a billionth of a degree Kelvin. So the discovery of a Higgs boson has a central place in our attempts both to achieve a true understanding of Nature and to harness Nature in practical applications.

  6. Bridge Decomposition of Restriction Measures

    E-Print Network [OSTI]

    Tom Alberts; Hugo Duminil-Copin

    2010-07-03

    Motivated by Kesten's bridge decomposition for two-dimensional self-avoiding walks in the upper half plane, we show that the conjectured scaling limit of the half-plane SAW, the SLE(8/3) process, also has an appropriately defined bridge decomposition. This continuum decomposition turns out to entirely be a consequence of the restriction property of SLE(8/3), and as a result can be generalized to the wider class of restriction measures. Specifically we show that the restriction hulls with index less than one can be decomposed into a Poisson Point Process of irreducible bridges in a way that is similar to Ito's excursion decomposition of a Brownian motion according to its zeros.

  7. A Methodology for the Assessment of Unconventional (Continuous) Resources with an Application to the Greater Natural Buttes Gas Field, Utah

    SciTech Connect (OSTI)

    Olea, Ricardo A.; Cook, Troy A.; Coleman, James L.

    2010-12-15

    The Greater Natural Buttes tight natural gas field is an unconventional (continuous) accumulation in the Uinta Basin, Utah, that began production in the early 1950s from the Upper Cretaceous Mesaverde Group. Three years later, production was extended to the Eocene Wasatch Formation. With the exclusion of 1100 non-productive ('dry') wells, we estimate that the final recovery from the 2500 producing wells existing in 2007 will be about 1.7 trillion standard cubic feet (TSCF) (48.2 billion cubic meters (BCM)). The use of estimated ultimate recovery (EUR) per well is common in assessments of unconventional resources, and it is one of the main sources of information to forecast undiscovered resources. Each calculated recovery value has an associated drainage area that generally varies from well to well and that can be mathematically subdivided into elemental subareas of constant size and shape called cells. Recovery per 5-acre cells at Greater Natural Buttes shows spatial correlation; hence, statistical approaches that ignore this correlation when inferring EUR values for untested cells do not take full advantage of all the information contained in the data. More critically, resulting models do not match the style of spatial EUR fluctuations observed in nature. This study takes a new approach by applying spatial statistics to model geographical variation of cell EUR taking into account spatial correlation and the influence of fractures. We applied sequential indicator simulation to model non-productive cells, while spatial mapping of cell EUR was obtained by applying sequential Gaussian simulation to provide multiple versions of reality (realizations) having equal chances of being the correct model. For each realization, summation of EUR in cells not drained by the existing wells allowed preparation of a stochastic prediction of undiscovered resources, which range between 2.6 and 3.4 TSCF (73.6 and 96.3 BCM) with a mean of 2.9 TSCF (82.1 BCM) for Greater Natural Buttes. A second approach illustrates the application of multiple-point simulation to assess a hypothetical frontier area for which there is no production information but which is regarded as being similar to Greater Natural Buttes.

  8. Excitation Methods for Bridge Structures

    SciTech Connect (OSTI)

    Farrar, C.R.; Duffy, T.A.; Cornwell, P.J.; Doebling, S.W.

    1999-02-08

    This paper summarizes the various methods that have been used to excited bridge structures during dynamic testing. The excitation methods fall into the general categories of ambient excitation methods and measured-input excitation methods. During ambient excitation the input to the bridge is not directly measured. In contrast, as the category label implies, measured-input excitations are usually applied at a single location where the force input to the structure can be monitored. Issues associated with using these various types of measurements are discussed along with a general description of the various excitation methods.

  9. Field tests of timber railroad bridge piles 

    E-Print Network [OSTI]

    Donovan, Kendra Ann

    2005-02-17

    generated model and previous test data. Field testing involved consent from a railroad company to install load cells and string potentiometers on an in-situ timber bridge. While simultaneously taking load and deflection measurements for bridges under...

  10. View from the Bridge | Department of Energy

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

    View from the Bridge View from the Bridge This presentation gives an overview of Caterpillar's R&D focus on advanced diesel engines and exhaust aftertreatment. deer08utley.pdf...

  11. Wind effect on long span bridge

    E-Print Network [OSTI]

    Zhang, Xi, M. Eng. Massachusetts Institute of Technology

    2012-01-01

    This thesis has studied different types of reactions of long span bridge under wind load, such as vortex shedding, flutter and buffeting. Since all of these conditions have the chance to damage bridge structure, we calculate ...

  12. Simplified Method for Estimating Future Scour Depth at Existing Bridges 

    E-Print Network [OSTI]

    V Govindasamy, Anand

    2010-07-14

    Bridge scour is the term which describes the erosion of soil surrounding a bridge foundation due to water. Bridge scour can cause the reduction of the load carrying capacity of bridge foundations, excessive foundation ...

  13. Empirical Study of Life-Cycle Cost Analysis for Bridges

    E-Print Network [OSTI]

    framework and methodology for the study · Step two: Obtain data from old urban bridges, such as the Brooklyn Bridge and the Golden Gate Bridge · Step three: Obtain data from highway bridges of different structural

  14. STUDENT STEEL BRIDGE COMPETITION The mission of the Student Steel Bridge Competition (SSBC) is to supplement

    E-Print Network [OSTI]

    Stuart, Steven J.

    1 STUDENT STEEL BRIDGE COMPETITION 2012 RULES #12;2 MISSION The mission of the Student Steel Bridge individuals in the Student Steel Bridge Competition without regard to race, ethnicity, religion, age, gender, sexual orientation, nationality, or physical challenges. Bridge teams should be inclusive and open

  15. River Lagan Lagan Bridge (M3)

    E-Print Network [OSTI]

    Gribakin, Gleb

    River Lagan Stew art Street Pakenham St. Ormeau Road PSNI Odyssey/W5 Lagan Bridge (M3) Royal Avenue Church Lane BridgeSt. HillStreet Skipper Street Ann Street Gordon Street Talbot Street DunbarStreet Gt. Glengall Street Divis Street Castle Street Durham Street BoyneBridge BarrackStreet BedfordStreet Linenhall

  16. How Many Bridge Auctions? Erich Friedman

    E-Print Network [OSTI]

    Friedman, Erich

    How Many Bridge Auctions? Erich Friedman student, Rose-Hulman Institute of Technology Doug Jungreis student, Harvard University In normal games of bridge, only a small fraction of the possible auctions at the actual number of distinct auctions. The game of bridge is played with four players comprising two teams

  17. Bridge Detection By Road Detection Jeff Kaufman

    E-Print Network [OSTI]

    Danner, Andrew

    Bridge Detection By Road Detection Jeff Kaufman cbr@sccs.swarthmore.edu 1 Introduction It is useful, with local min- ima: cells from which there is no direction of descent. A common cause of this is bridges. The area over which a bridge passes shows up in the digital elevation as being of a height greater than

  18. Theory of water and charged liquid bridges

    E-Print Network [OSTI]

    Klaus Morawetz

    2012-05-29

    The phenomena of liquid bridge formation due to an applied electric field is investigated. A new solution for the charged catenary is presented which allows to determine the static and dynamical stability conditions where charged liquid bridges are possible. The creeping height, the bridge radius and length as well as the shape of the bridge is calculated showing an asymmetric profile in agreement with observations. The flow profile is calculated from the Navier Stokes equation leading to a mean velocity which combines charge transport with neutral mass flow and which describes recent experiments on water bridges.

  19. A Light-weight Approach to Reducing Energy Management Delays in Disks Guanying Wang, Ali R. Butt, Chris Gniady, Puranjoy Bhattacharjee

    E-Print Network [OSTI]

    Butt, Ali R.

    A Light-weight Approach to Reducing Energy Management Delays in Disks Guanying Wang, Ali R. Butt techniques such as turning machines off overnight and dynamic energy management during the business hours. Unfortunately, dynamic energy management, especially that for disks, introduces delays when an accessed disk

  20. The Passivity and Breakdown of Beryllium in Aqueous Solutions M.A. Hill, D.P. Butt, and R.S. Lillard

    E-Print Network [OSTI]

    The Passivity and Breakdown of Beryllium in Aqueous Solutions M.A. Hill, D.P. Butt, and R beryllium (Be) has been studied as a function of pH. Below pH 2, Be exhibited active dissolution at all, the presence of the fluoride increased the passive current density of beryllium, but had no effect

  1. Appendix A-1 A Gallery of Truss Bridges

    E-Print Network [OSTI]

    Bowen, James D.

    River Bridge, County Rd. 269, Sheridan County, WY #12;APPENDIX A Appendix A-9 25. Roaring Run Bridge over the Kickapoo River, Vernon County, WI 2. Rock Island Bridge, Rock Island Arsenal, IL 3. Albion Bridge over Blackstone River, Cumberland, RI 4. Railroad Bridge over Lin Branch Creek, Clinton County, MO

  2. Bridging Research to Implementation, from Fields to Wheels

    E-Print Network [OSTI]

    Lee, Dongwon

    IOENERG Bridging Research to Implementation, from Fields to Wheels BioEnergy Bridge BioEnergy BridgeTM The Penn State BioEnergy BridgeTM is a university/private/public consortium assembled to address development and engine testing· The BioEnergy Bridge will combine Penn State's long-standing tradition

  3. SoftBridge: An Architecture for Building IP-based Bridges over the Digital Divide

    E-Print Network [OSTI]

    Blake, Edwin

    SoftBridge: An Architecture for Building IP-based Bridges over the Digital Divide John Lewis, Bill outline the architecture and the requirements that the SoftBridge has to fulfill. An ap- proach and some), about 4 million land lines exist in South Africa and only 20% of South Africans have cellphones. Even

  4. Bridge-Mediated Two-Electron Transfer via Delocalized Bridge Orbitals E. G. Petrov, Ya. R. Zelinskyy, and V. May*,

    E-Print Network [OSTI]

    Röder, Beate

    Bridge-Mediated Two-Electron Transfer via Delocalized Bridge Orbitals E. G. Petrov, Ya. R, 2004 Bridge mediated two-electron transfer (TET) in a donor-acceptor (D-A) complex is studied theoretically. A type of bridge is considered where the intersite coupling in the bridge becomes so large

  5. Structural Reliability of Bridges Elevated with Steel Pedestals 

    E-Print Network [OSTI]

    Bisadi, Vahid 1980-

    2012-09-19

    Overheight vehicle impact to bridge decks is a major problem in the transportation networks in the United States. An important factor that causes this problem is inadequate vertical clearance of bridges. Using steel pedestals to elevate bridge decks...

  6. Accurate resistive bridge fault modeling, simulation, and test generation 

    E-Print Network [OSTI]

    Sar-Dessai, Vijay Ramesh

    1999-01-01

    Resistive bridging faults in CMOS combinational circuits are studied in this work. Bridging faults are modeled using HSPICE circuit simulation of the various types of bridging faults that can occur in CMOS combinational ...

  7. On rescaled Poisson processes and the Brownian bridge

    E-Print Network [OSTI]

    Rick Schoenberg

    2011-01-01

    relation to the Brownian Bridge. The structure of this paperMotion and the Brownian Bridge. For instance, the followingconditional the Brownian Bridge process B°(s) LEMMA Suppose

  8. ADDITIVITY PROPERTIES OF GENERALIZED BRIDGE NUMBERS OF KNOTS

    E-Print Network [OSTI]

    . Later, Helmut Doll generalized the the notion of bridge number of a knot. Schubert's notion of bridge splitting of S 3 , whereas Doll's more general notion of bridge number can be formulated in terms of a nice

  9. Passing the Einstein-Rosen bridge

    E-Print Network [OSTI]

    M. O. Katanaev

    2013-10-28

    We relax the requirement of geodesic completeness of a space-time. Instead, we require test particles trajectories to be smooth only in the physical sector. Test particles trajectories for Einstein--Rosen bridge are proved to be smooth in the physical sector, and particles can freely penetrate the bridge in both directions.

  10. ROSS ISLAND BRIDGE SW GIBBS ST

    E-Print Network [OSTI]

    Chapman, Michael S.

    ROSS ISLAND BRIDGE SW GIBBS ST SW PORTER ST SW HOOKER ST SW PORTER ST SW MEADE ST SW ARTHUR STSW ARTHUR ST SW WOODS ST SW WOODS ST GIBBS ST PEDESTRIAN BRIDGE SW LANE ST SW PENNOYER ST SW ABERNETHY ST SW BANCROFT ST SW BANCROFT ST SW THOMAS ST SW ABERNETHY ST SW LOWELL ST SW THOMAS ST SW KELLY AVE SWMOODYAVE

  11. Bridging Research Interactions Through Collaborative Development Grants in Energy

    Broader source: Energy.gov [DOE]

    The DOE Bridging Research Interactions through collaborative Development Grants in Energy (BRIDGE) program funds collaborative research teams to significantly lower the cost of solar energy systems...

  12. Building Bridges: Federal Agencies Join Forces to Promote Sustainable...

    Office of Environmental Management (EM)

    Building Bridges: Federal Agencies Join Forces to Promote Sustainable, Resilient Tribal Communities Building Bridges: Federal Agencies Join Forces to Promote Sustainable, Resilient...

  13. Dumping Dirty Diesels: The View From the Bridge | Department...

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

    Dumping Dirty Diesels: The View From the Bridge Dumping Dirty Diesels: The View From the Bridge 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  14. New Energy Department Partnership Creates Solar Bridges to Energy...

    Energy Savers [EERE]

    New Energy Department Partnership Creates Solar Bridges to Energy Security New Energy Department Partnership Creates Solar Bridges to Energy Security July 7, 2015 - 3:21pm Addthis...

  15. Bridging the Gap between Fundamental Physics and Chemistry and...

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

    Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for HCCI Engines Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for...

  16. Performance-Based Decision-Making in Post-Earthquake Highway Bridge Repair

    E-Print Network [OSTI]

    Gordin, Eugene

    2010-01-01

    Transmittal (SMART) system. Further identifying the bridge= SMART = STAP = USGS = VFT = WashDOT = Area Bridge

  17. Monitoring Software using Sun Spots Corey Andalora

    E-Print Network [OSTI]

    Kaminsky, Alan

    a software application developed for demonstrating a monitoring network for air conditioning units their findings to a central data store. Air conditioning units were the equipment selected for monitoring. Air conditioning units vibrate while operating so they were an obvious choice to use with the accelerometers

  18. Development of a bridge fault extractor tool 

    E-Print Network [OSTI]

    Bhat, Nandan D.

    2005-02-17

    are tools that analyze chip layouts and produce a realistic list of bridging faults within that chip. FedEx, previously developed at Texas A&M University, extracts all two-node intralayer bridges of any given chip layout and optionally extracts all two...) for this tool which aids in more effectively visualizing the bridge faults across the chip. The final aim of this thesis was to perform FedEx output analysis to understand the nature of the defects, such as variation of critical area (the area where...

  19. Intelligent Sensing for Innovative Bridges EMILE SHEHATA,* PENG.

    E-Print Network [OSTI]

    in Manitoba, Canada. The first, the Taylor Bridge, is the longest smart bridge built in North America and \\vas- - - - - - - - - - - - - - Intelligent Sensing for Innovative Bridges EMILE SHEHATA,* PENG ABSTRACT: This paper discusses two types of fiber optic sensors used for monitoring highway bridges

  20. 2. Controlling Cars on a Bridge Jean-Raymond Abrial

    E-Print Network [OSTI]

    Southampton, University of

    2. Controlling Cars on a Bridge Jean-Raymond Abrial April 2008 #12;Purpose of this Lecture (1) 1 of the system, labeled FUN. - The function of this system is to control cars on a narrow bridge. - This bridge is controlling cars on a bridge between the mainland and an island FUN-1 - This can be illustrated as follows

  1. 2. Controlling Cars on a Bridge Jean-Raymond Abrial

    E-Print Network [OSTI]

    Southampton, University of

    2. Controlling Cars on a Bridge Jean-Raymond Abrial 2009 #12;Purpose of this Lecture (1) 1 of this system is to control cars on a narrow bridge. - This bridge is supposed to link the mainland to a small island. #12;A Requirements Document (2) 6 The system is controlling cars on a bridge between the mainland

  2. Willamette River Transit Bridge PSU CTS Seminar January 16, 2009

    E-Print Network [OSTI]

    Bertini, Robert L.

    Willamette River Transit Bridge PSU CTS Seminar January 16, 2009 Dave Unsworth, TriMet Guenevere River Transit Bridge · Portland-Milwaukie Light Rail Project · Plans for a new Willamette River Bridge · Public Process Today's Agenda #12;Willamette River Transit BridgePortland-Milwaukie Light Rail Project

  3. PROVENCHER BRIDGE OVER THE RED RIVER WINNIpEG, MANITOBA

    E-Print Network [OSTI]

    ABSTRACT PROVENCHER BRIDGE OVER THE RED RIVER WINNIpEG, MANITOBA C.D. Stewart and B.D. Thompson of Manitoba Winnipeg, Manitoba Alternative design schemes to replace the 76-year-old Provencher Bridge over for construction of the bridge is discussed. I Stewart, Thompson and Rizkalla. Provencher Bridge over the Red River

  4. RED Bridge Funding Program Principles Applicable to the Plan

    E-Print Network [OSTI]

    Barge, Marcy

    RED Bridge Funding Program Principles Applicable to the Plan: The purpose of bridge funding in order to give the investigator an opportunity to regain extramural funding. RED will consider bridge is needed to retain key personnel and to maintain project momentum. Bridge funds are not intended to support

  5. Designing and Building File-Folder Bridges

    E-Print Network [OSTI]

    Bowen, James D.

    with a group of our undergraduate engineering students to run a popsicle stick bridge-building contest for 11th into teams, and each team received a pile of popsicle sticks and a hot glue gun. Within a specified period

  6. Reliability of corroded steel bridge girders

    E-Print Network [OSTI]

    Cordahi, Irene A

    2006-01-01

    Corrosion is one of the main causes of deterioration of bridges. Structures exposed to harsh environmental conditions are subjected to time-variant changes of their load-carrying capacity. Thus, there is a need for an ...

  7. Maxwell Tension Supports the Water Bridge

    E-Print Network [OSTI]

    A. Widom; Y. N. Srivastava; J. Swain; S. Sivasubramanian

    2008-12-30

    A cylindrical flexible cable made up of pure fluid water can be experimentally spanned across a spatial gap with cable endpoints fixed to the top edges of two glass beakers. The cable has been called a water bridge in close analogy to iron cables employed to build ordinary span bridges. A necessary condition for the construction of a water bridge is that a large electric field exists parallel to and located within the water cable. Presently, there is no accepted detailed theory which quantitatively explains the forces which hold up the bridge. Our purpose is to present such theory based on the Maxwell pressure tensor induced by the electric field albeit within the condensed matter dielectric fluid cable.

  8. Design optimization of cable-stayed bridges

    E-Print Network [OSTI]

    Bessas, Georgios

    2006-01-01

    The goal of this thesis is to achieve a basic understanding of cable-stayed systems. Issues to be treated are the diachronic evolution of cable-stayed bridges, including the advantages, the limitations and the basic design ...

  9. SSL Demonstration: Bridge Lighting, Minneapolis, MN

    SciTech Connect (OSTI)

    2014-10-01

    DOE Solid-State Lighting GATEWAY summary brief for Phase II report on the longer-term performance of LED lighting installed in 2008 on the I-35W Bridge in Minneapolis, MN.

  10. Cal-Bridge: A CSU-UC PhD Bridge Program to Increase Diversity in Astronomy and Physics

    E-Print Network [OSTI]

    Rudolph, Alexander L.

    Cal-Bridge: A CSU-UC PhD Bridge Program to Increase Diversity in Astronomy Cal Poly Pomona October 23, 2014 #12;Why Cal-Bridge (and CAMPARE)? · "Li States Hispanic 17% 31% #12;Why Cal-Bridge (and CAMPARE)? Percent of doctorates awarded

  11. Synthesis, Structure, Bridge-Terminal Exchange Kinetics, and Molecular Orbital Calculations of Pyrazolate-Bridged Digallium Complexes Containing

    E-Print Network [OSTI]

    Schlegel, H. Bernhard

    Synthesis, Structure, Bridge-Terminal Exchange Kinetics, and Molecular Orbital Calculations of Pyrazolate-Bridged Digallium Complexes Containing Bridging Phenyl Groups Chatu T. Sirimanne, John E. KnoxVersity, Detroit, Michigan 48202 Received May 21, 2003; E-mail: chw@chem.wayne.edu Bridging of monoanionic

  12. The Pennsylvania State University www.BioEnergyBridge.psu.edu 1 BioEnergy Bridge

    E-Print Network [OSTI]

    Lee, Dongwon

    © The Pennsylvania State University www.BioEnergyBridge.psu.edu 1 Penn State BioEnergy# trichard@psu.edu rtw103@psu.edu www.bioenergy.psu.edu Biomass Energy Center #12;© The Pennsylvania State · The BioEnergy BridgeTM will address the full spectrum of challenges to our national priority of reducing

  13. Effect of structure backfill on stiffness and capacity of bridge abutments

    E-Print Network [OSTI]

    Bozorgzadeh, Azadeh

    2007-01-01

    of exterior sacrificial shear keys of bridge abutments. ”J. Bridge Engrg. , Briaud, J. L. ,Soil-nailed wall under piled bridge abutment: simulation and

  14. ODT’s OTIA III Bridge Program: Three Years of Environmental Stewardship

    E-Print Network [OSTI]

    Richards, Shelley D.; Ryan, Bill

    2007-01-01

    February 2007. OTIA III Bridge Delivery Program. Monthlyfor ODOT’s OTIA III State Bridge Delivery Program: Manyimpacts. The OTIA III State Bridge Delivery Program (the

  15. Performance-Based Decision-Making in Post-Earthquake Highway Bridge Repair

    E-Print Network [OSTI]

    Gordin, Eugene

    2010-01-01

    Reinforced Concrete Bridge Columns by Steel Jacketing. SanDatabase for Concrete Bridge Components and Systems underMotion Level on Highway Bridge Costs. Program of Applied

  16. Seismic bridge response modification due to degradation of viscous dampers performance

    E-Print Network [OSTI]

    Graziotti, Francesco

    2010-01-01

    Monitoring of Isolated Bridges: Parametric Analysis of theidentification procedure for bridge structures with energyUCSD. Cendron. (2008). Bridge response modification due to

  17. The Interstate-40 bridge shaker project

    SciTech Connect (OSTI)

    Mayes, R.L.; Nusser, M.A.

    1994-04-01

    New Mexico State University organized an effort to perform static and dynamic damage-detection tests on the Interstate-40 bridge over the Rio Grande at Albuquerque. The opportunity was available because the 425-ft-long bridge was soon to be replaced. Sandia National Laboratories was asked to provide and operate a shaker that could exert 1000-lb peak amplitude forces for both sinusoidal and random excitations between 2 and 20 Hz. Two Sandia departments collaborated to design and build the shaker, using existing major components connected with Sandia-designed and -fabricated hardware. The shaker was installed and operated successfully for a series of five modal and sinusoidal response tests.

  18. Bridge Theory: Oltre la Frontiera Quantistica

    E-Print Network [OSTI]

    Massimo Auci

    2009-01-25

    Bridge Theory was born in 1979 from a simple idea. An observer of a dipolar source cannot measure instantaneously all the energy and momentum effectively produced along the own line of view because the source has not a spherical symmetry. This physical circumstance has as consequence that the energy and momentum localised inside the source zone is equivalent to one of a photon. The new approach to quantisation appears to be a bridge between quantum mechanics and electromagnetic theory with many intriguing future develops.

  19. Bridge Detection from Elevation Data Using a Classifier Cascade

    E-Print Network [OSTI]

    Danner, Andrew

    -earth terrain. One of the most important problem features are bridges. From the air, a bridge appears as a solid it is marked out. 1.1 Related Work Sithole and Vosselman (Sithole and Vosselman, 2006) de- scribe a system

  20. Modeling - Scale-Bridging Simulations Active Materials in Li...

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

    - Scale-Bridging Simulations Active Materials in Li-ion Batteries, and Validation in BATT Electrodes Modeling - Scale-Bridging Simulations Active Materials in Li-ion Batteries, and...

  1. Carbon nanotubes and their application to very long span bridges

    E-Print Network [OSTI]

    Damolini, Stéphane

    2009-01-01

    Spanning long distances in bridge construction relies mainly on the structure's efficiency and materials used. Whereas structural design for high rise building is fast-expanding, the overall design of long span bridges has ...

  2. To Bridge LEDs' Green Gap, Scientists Think Small

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

    To Bridge LEDs' Green Gap, Scientists Think Small To Bridge LEDs' Green Gap, Scientists Think Small Nanostructures Half a DNA Strand-Wide Show Promise for Efficient LEDs April 4,...

  3. Calculation of Extreme Wave Loads on Coastal Highway Bridges 

    E-Print Network [OSTI]

    Meng, Bo

    2010-01-14

    Coastal bridges are exposed to severe wave, current and wind forces during a hurricane. Most coastal bridges are not designed to resist wave loads in such extreme situations, and there are no existing analytical methods to calculate wave loads...

  4. The Middle East Roads, Bridges and Tolls

    E-Print Network [OSTI]

    Nagurney, Anna

    EconomicCrisis ­ Expatriatejobscut ­ Overconges8on · DubaiWorld'sDebt ­ Slowedexpansion ­ AbuDhabiBailout #12;Negatives Low Housing#12;#12;The Middle East #12;Dubai #12;#12;#12;#12;#12;#12;Roads, Bridges and Tolls RTA Two Major longest automatic driverless system in the world Red (2009) and Green Line (2010) 87 Trains 74

  5. ADVANCED COMPOSITE MATERIALS FOR BRIDGES Sami RIZKALLA

    E-Print Network [OSTI]

    is also discussed. The high strength and light weight of these materials and the fact that they are now to the increasing demand to use heavier truck loads. This paper reviews some ofthe Canadian projects which have been demand for heavier truck loads and to increase ductility of existing bridges for earthquake resistance

  6. Recent Innovation for Concrete Highway Bridges

    E-Print Network [OSTI]

    , Calgary, Alberta) is prestressed by carbon fiber reinforced plastic (CFRP) tendons and instrumented bridge constructed in Canada using two different types of carbon fiber reinforced plastic (CFRP) tendons Rizkalla/Mufti #12;The two different types of CFRP used were carbon fiber composite cables (CFCC) 0.625 in

  7. Bridging mycorrhizal genomics, metagenomics and forest ecology

    E-Print Network [OSTI]

    Pringle, Anne

    Meetings Bridging mycorrhizal genomics, metagenomics and forest ecology 6th New Phytologist of easily cultured saprotrophic fungi (among the first three published genomes were the models Saccharomyces or biotechnological interest, genomics is now poised to rapidly permeate the fields of fungal ecology and evolution

  8. Building Access Program Facilities Management Bridge Group

    E-Print Network [OSTI]

    Building Access Program Facilities Management Bridge Group January 21, 2014 #12;Campus Safety Initiatives · Lighting and Landscaping · Video Surveillance · Building Access #12;The Challenge · How do we;Components of Building Access · Perimeter automation · Tightening of public hours #12;Perimeter Automation

  9. The iron abundance of the Magellanic Bridge

    E-Print Network [OSTI]

    P. L. Dufton; R. S. I. Ryans; H. M. A. Thompson; R. A. Street

    2008-02-01

    High-resolution HST ultra-violet spectra for five B-type stars in the Magellanic Bridge and in the Large and Small Magellanic Clouds have been analysed to estimate their iron abundances. Those for the Clouds are lower than estimates obtained from late-type stars or the optical lines in B-type stars by approximately 0.5 dex. This may be due to systematic errors possibly arising from non-LTE effects or from errors in the atomic data as similar low Fe abundances having previously been reported from the analysis of the ultra-violet spectra of Galactic early-type stars. The iron abundance estimates for all three Bridge targets appear to be significantly lower than those found for the SMC and LMC by approximately -0.5 dex and -0.8 dex respectively and these differential results should not be affected by any systematic errors present in the absolute abundance estimates. These differential iron abundance estimates are consistent with the underabundances for C, N, O, Mg and Si of approximately -1.1 dex relative to our Galaxy previously found in our Bridge targets. The implications of these very low metal abundances for the Magellanic Bridge are discussed in terms of metal deficient material being stripped from the SMC.

  10. Characterization and electrical modeling of semiconductors bridges

    SciTech Connect (OSTI)

    Marx, K.D.; Bickes, R.W. Jr.; Wackerbarth, D.E.

    1997-03-01

    Semiconductor bridges (SCBs) are finding increased use as initiators for explosive and pyrotechnic devices. They offer advantages in reduced voltage and energy requirements, coupled with excellent safety features. The design of explosive systems which implement either SCBs or metal bridgewires can be facilitated through the use of electrical simulation software such as the PSpice{reg_sign} computer code. A key component in the electrical simulation of such systems is an electrical model of the bridge. This report has two objectives: (1) to present and characterize electrical data taken in tests of detonators which employ SCBs with BNCP as the explosive powder; and (2) to derive appropriate electrical models for such detonators. The basis of such models is a description of the resistance as a function of energy deposited in the SCB. However, two important features which must be added to this are (1) the inclusion of energy loss through such mechanisms as ohmic heating of the aluminum lands and heat transfer from the bridge to the surrounding media; and (2) accounting for energy deposited in the SCB through heat transfer to the bridge from the explosive powder after the powder ignites. The modeling procedure is entirely empirical; i.e., models for the SCB resistance and the energy gain and loss have been estimated from experimental data taken over a range of firing conditions. We present results obtained by applying the model to the simulation of SCB operation in representative tests.

  11. The Library as bridge Science and Art

    E-Print Network [OSTI]

    Napp, Nils

    & Engineering Library, University of Nevada, Flickr galleries #12;Oak Park Public Library httpThe Library as bridge between Science and Art Moriana Garcia and Shannon Robinson AAAS 2013 http/466515914_734739ada4.jpg Multidisciplinary space #12;Library displays #12;http://farm7.staticflickr.com/6203

  12. Bridges in the random-cluster model

    E-Print Network [OSTI]

    Elçi, Eren Metin; Fytas, Nikolaos G

    2015-01-01

    The random-cluster model, a correlated bond percolation model, unifies a range of important models of statistical mechanics in one description, including independent bond percolation, the Potts model and uniform spanning trees. By introducing a classification of edges based on their relevance to the connectivity we study the stability of clusters in this model. We derive several exact relations for general graphs that allow us to derive unambiguously the finite-size scaling behavior of the density of bridges and non-bridges. For percolation, we are also able to characterize the point for which clusters become maximally fragile and show that it is connected to the concept of the bridge load. Combining our exact treatment with further results from conformal field theory, we uncover a surprising behavior of the variance of the number of (non-)bridges, showing that these diverge in two dimensions below the value $4\\cos^2{(\\pi/\\sqrt{3})}=0.2315891\\cdots$ of the cluster coupling $q$. Finally, it is shown that a par...

  13. Pedestrian excitation of bridges D E Newland

    E-Print Network [OSTI]

    Newland, David E.

    Pedestrian excitation of bridges D E Newland Department of Engineering, University of Cambridge caused by moving pedestrians. The phenomenon of `synchronization' by which people respond naturally to high vibration levels. The main assumption is that the movement of a pedestrian's centre of mass has

  14. BRIDGING WEATHER AND CLIMATE IN RESEARCH AND

    E-Print Network [OSTI]

    Johnson, Richard H.

    BRIDGING WEATHER AND CLIMATE IN RESEARCH AND FORECASTS OF THE GLOBAL MONSOON SYSTEM by Chih and forecast issues ranging from mesoscale weather to climate change in various monsoon regions of the globe organized under the new World Weather Research Programme (WWRP). The previous emphasis of this workshop

  15. THE 2005 FHWA CONFERENCE Integral Abutment and Jointless Bridges

    E-Print Network [OSTI]

    Horvath, John S.

    THE 2005 ­ FHWA CONFERENCE Integral Abutment and Jointless Bridges (IAJB 2005) March 16 ­ 18, 2005 Guidelines and Foundation Design Integral Abutment and Jointless Bridges V. Mistry 3 Integral Abutments and Jointless Bridges (IAJB) 2004 Survey Summary R. Maruri, S.Petro 12 The In-Service Behavior of Integral

  16. ack, Rayner & Pell: Pragmatic Reasoning in Bridge 23 [Searle 1979

    E-Print Network [OSTI]

    Haddadi, Hamed

    Gamb Ë? ack, Rayner & Pell: Pragmatic Reasoning in Bridge 23 [Searle 1979] Searle, J.R. 1979 of Wisconsin. #12; Gamb Ë? ack, Rayner & Pell: Pragmatic Reasoning in Bridge 22 [Levy 1989] Levy, D.N.L., 1989. 400--411. #12; Gamb Ë? ack, Rayner & Pell: Pragmatic Reasoning in Bridge 21 Acknowledgements The work

  17. THE CLASSIFICATION OF DEHN SURGERIES ON 2-BRIDGE KNOTS

    E-Print Network [OSTI]

    Brittenham, Mark

    THE CLASSIFICATION OF DEHN SURGERIES ON 2-BRIDGE whether a given surgery on a 2-bridge knot is * *reducible, toroidal, Seifert fibered, or hyperbolic are non-hyperbolic. Let Kp=q be a 2-bridge* * knot associated to the rational number p=q. When p 1

  18. OVERALL BEHAVIOR AND MATERIAL CHARACTERIZATION OF PULTRUDED GFRP BRIDGE DECKS

    E-Print Network [OSTI]

    OVERALL BEHAVIOR AND MATERIAL CHARACTERIZATION OF PULTRUDED GFRP BRIDGE DECKS Lee Nelson1 , Tarek K condition of bridges and other infrastructure facilities has been documented by several researchers worldwide. Fiber Reinforced Polymer (FRP) composite bridge decks deliver viable solutions to meet critical

  19. BUILD Program bridge to university for individuals with learning disabilities

    E-Print Network [OSTI]

    BUILD Program bridge to university for individuals with learning disabilities Now, you can get by participating in our new BUILD (Bridge to University for Individuals with Learning Disabilities) Program. Sign the school year knowing the critical information you need to be successful in university. The Bridge

  20. THE CLASSIFICATION OF DEHN SURGERIES ON 2-BRIDGE KNOTS

    E-Print Network [OSTI]

    Brittenham, Mark

    THE CLASSIFICATION OF DEHN SURGERIES ON 2-BRIDGE KNOTS Mark Brittenham and Ying-Qing Wu Abstract. We will determine whether a given surgery on a 2-bridge knot is reducible, toroidal, Seifert bered-hyperbolic. Let Kp=q be a 2-bridge knot associated to the rational number p=q. When p 1 mod q, K is a torus knot

  1. BUILD Program Bridge to University for Individuals with Learning Disabilities

    E-Print Network [OSTI]

    BUILD Program Bridge to University for Individuals with Learning Disabilities Now, you can get by participating in our new BUILD (Bridge to University for Individuals with Learning Disabilities) Program. Sign the school year knowing the critical information you need to be successful in university. The Bridge

  2. A new mathematical explanation of the Tacoma Narrows Bridge collapse

    E-Print Network [OSTI]

    A new mathematical explanation of the Tacoma Narrows Bridge collapse Gianni ARIOLI - Filippo The spectacular collapse of the Tacoma Narrows Bridge, which occurred in 1940, has attracted the at- tention a new mathematical model for the study of the dy- namical behavior of suspension bridges which provides

  3. Bridge Creek Watershed Volunteer Lake Secchi Disk Monitoring Program

    E-Print Network [OSTI]

    #12;Bridge Creek Watershed Volunteer Lake Secchi Disk Monitoring Program 1996 DOE FRAP 1996-13 Ryan.C. December 1996 #12;ABSTRACT This document summarizes data collected during the first year of the Bridge transparency data from 22 lakes in the Bridge Creek watershed. Secchi depth readings were collected between May

  4. Bridge Functionality Relationships for Improved Seismic Risk Assessment

    E-Print Network [OSTI]

    Padgett, Jamie Ellen

    Bridge Functionality Relationships for Improved Seismic Risk Assessment of Transportation Networks Jamie E. Padgett,a... M.EERI, and Reginald DesRoches,b... M.EERI Relationships between bridge damage and the resulting loss of functionality of the bridge are critical to assessing the impact of an earthquake event

  5. AUGMENTED REALITY VISUALIZATION TOOL FOR KINGS STORMWATER BRIDGE

    E-Print Network [OSTI]

    Bailey, Mike

    AUGMENTED REALITY VISUALIZATION TOOL FOR KINGS STORMWATER BRIDGE Matthew Clothier Mike Bailey Stormwater Bridge structure. Unfortunately, since AR is still in its infancy, much of the research devoted Monitoring of Structures, Applications 1. Introduction: Kings Stormwater Bridge Over the past few years, our

  6. HIDDEN SYMMETRIES OF CYCLIC BRANCHED COVERINGS OF 2-BRIDGE KNOTS

    E-Print Network [OSTI]

    HIDDEN SYMMETRIES OF CYCLIC BRANCHED COVERINGS OF 2-BRIDGE KNOTS MARCO RENI AND ANDREI VESNIN hyperbolic 3-manifolds Mn(K), which are n- fold cyclic branched coverings of 2-bridge knots K. We show the symmetry groups of knots and links (see [BZ], [Ka]). Particularly, the class of 2-bridge knots

  7. REQUEST FOR BRIDGE FUNDING Schools of the Health Sciences

    E-Print Network [OSTI]

    Sibille, Etienne

    1 REQUEST FOR BRIDGE FUNDING Schools of the Health Sciences (Revised, October 2014) In light Sciences and John and Gertrude Petersen Dean, School of Medicine, will provide limited bridge funding as permitted by the scientific merit of the project to be bridged, the documented need for such funds

  8. Bridge-Node Selection and Loss Recovery in Island Multicast

    E-Print Network [OSTI]

    Chan, Shueng-Han Gary

    Bridge-Node Selection and Loss Recovery in Island Multicast W.-P. Ken Yiu K.-F. Simon Wong S multicast-capable domains (the so-called islands) while overlay connections are used to bridge islands. In the previously proposed scheme, the number of ping measurements to find good bridge-nodes is at least

  9. Active control of extremely prestressed simple supported composite bridges

    E-Print Network [OSTI]

    Dagher, Bahjat (Bahjat Nouhad)

    2007-01-01

    More than 600,000 US bridges are considered to be in need of rehabilitation. More than 90 Billion US Dollars is the estimated amount of money required. According to the National Bridge Inventory, 18.5% of those bridges are ...

  10. Valuable bridges : cable-stayed bridges and value engineering in American civil engineering culture, 1969-1979

    E-Print Network [OSTI]

    Samuels, Fallon M. (Fallon Michele)

    2007-01-01

    A history and theory of cable-stayed bridges in the context of a cultural discourse on civil construction projects' value, this thesis studies the significance of cable-stayed bridge designs to 'value engineering' objectives ...

  11. M362K Second Midterm Exam. March 12, 2004 Problem 1. Bridge

    E-Print Network [OSTI]

    Voloch, Felipe

    M362K Second Midterm Exam. March 12, 2004 Problem 1. Bridge A bridge hand consists of 13 cards from a standard 52 card deck. a) How many bridge hands contain exactly five spades? b) How many bridge hands contain all 4 aces? c) How many bridge hands contain exactly 5 spades and all 4 aces? d) How many bridge

  12. Impact of AASHTO LRFD bridge design specifications on the design of Type C and AASHTO Type IV girder bridges 

    E-Print Network [OSTI]

    Mohammed, Safiuddin Adil

    2007-04-25

    of prestressed concrete bridges. It was identified that Type C and AASHTO Type IV are among the most common girder types used by TxDOT for prestressed concrete bridges. This study is specific to these two types of bridges. Guidelines are provided to tailor TxDOT...

  13. Polymeric salt bridges for conducting electric current in microfluidic devices

    DOE Patents [OSTI]

    Shepodd, Timothy J. (Livermore, CA); Tichenor, Mark S. (San Diego, CA); Artau, Alexander (Humacao, PR)

    2009-11-17

    A "cast-in-place" monolithic microporous polymer salt bridge for conducting electrical current in microfluidic devices, and methods for manufacture thereof is disclosed. Polymeric salt bridges are formed in place in capillaries or microchannels. Formulations are prepared with monomer, suitable cross-linkers, solvent, and a thermal or radiation responsive initiator. The formulation is placed in a desired location and then suitable radiation such as UV light is used to polymerize the salt bridge within a desired structural location. Embodiments are provided wherein the polymeric salt bridges have sufficient porosity to allow ionic migration without bulk flow of solvents therethrough. The salt bridges form barriers that seal against fluid pressures in excess of 5000 pounds per square inch. The salt bridges can be formulated for carriage of suitable amperage at a desired voltage, and thus microfluidic devices using such salt bridges can be specifically constructed to meet selected analytical requirements.

  14. Accelerated Aging of Polymer Composite Bridge Materials

    SciTech Connect (OSTI)

    Carlson, Nancy Margaret; Blackwood, Larry Gene; Torres, Lucinda Laine; Rodriguez, Julio Gallardo; Yoder, Timothy Scott

    1999-03-01

    Accelerated aging research on samples of composite material and candidate ultraviolet (UV) protective coatings is determining the effects of six environmental factors on material durability. Candidate fastener materials are being evaluated to determine corrosion rates and crevice corrosion effects at load-bearing joints. This work supports field testing of a 30-ft long, 18-ft wide polymer matrix composite (PMC) bridge at the Idaho National Engineering and Environmental Laboratory (INEEL). Durability results and sensor data from tests with live loads provide information required for determining the cost/benefit measures to use in life-cycle planning, determining a maintenance strategy, establishing applicable inspection techniques, and establishing guidelines, standards, and acceptance criteria for PMC bridges for use in the transportation infrastructure.

  15. Tacoma Bridge Failure-- a Physical Model

    E-Print Network [OSTI]

    Green, D; Green, Daniel; Unruh, William G.

    2004-01-01

    The cause of the collapse of the Tacoma Narrows Bridge has been a topic of much debate and confusion since the day it fell. Many mischaracterizations of the observed phenomena have limited the widespread understanding of the problem. Nevertheless, there has always been an abundance of evidence in favour of a negative damping model. Negative damping, or positive feedback, is responsible for many large amplitude oscillations observed in many applications. In this paper, we will explain some well-known examples of positive feedback. We will then present a feedback model, derived from fundamental physics, capable of explaining a number of features observed in the instabilities of many bridge decks. This model is supported by computational, experimental and historical data.

  16. Ha Emission from the Magellanic Bridge

    E-Print Network [OSTI]

    E. Muller; Q. Parker

    2007-06-27

    We present here a preliminary report and commentary of recently processed observations of Ha emission towards the Magellanic Bridge. These data have been analysed in an attempt to quantify the extent to which the stellar population is capable of reshaping the local ISM. We find that the Ha emission regions are small, weak and sparsely distributed, consistent with a relatively quiescent and inactive ISM where radiative and collisional ionisation is inefficient and sporadic. This suggests that energetic processes at the small scale (i.e. ~tens of pc) do not dominate the energy balance within the ISM of the Bridge, which therefore hosts a pristine turbulent structure, otherwise inaccessible within our own Galaxy. We find Ha emission that is well correlated with detected 12CO(1-0) line emission (a proxy for molecular hydrogen), as well as other easily identified ring-like HI features.

  17. Bridged polygermsesquioxanes. Organically modified germanium oxide materials

    SciTech Connect (OSTI)

    Jamison, G.M.; Loy, D.A. (Sandia National Labs., Albuquerque, NM (United States)); Shea, K.J. (Univ. of California, Irvine, CA (United States))

    1993-09-01

    Sol-gel processed polysilsesquioxanes are hybrid organic-inorganic materials with potential applications as photoresists, membranes, or catalytic supports. Hydrolytic conversion of trichloro- or trialkoxysilanes often leads to amorphous or crystalline oligosilsesquioxanes instead of high polymers. In light of the intimate dependence of polysilsesquioxane properties of tightly controlled reaction conditions and processing, recent emphasis has been placed on control of polymer microarchitecture via the introduction of arylene-, acetylene-, and alkylene-bridging groups. Another strategy for modifying the properties of hybrid organic-inorganic polymers is to substitute a group IVA metal, such as germanium, for silicon. The authors report the synthesis and characterization of bifunctional hexylene-bridged organogermanium monomers X[sub 3]Ge-(CH[sub 2])[sub 6]GeX[sub 3] (X = Cl; OEt) and the formation of polymeric materials through sol-gel hydrolysis-condensation of the monomers. 15 refs., 2 figs.

  18. Busted Butte Unsaturated Zone Transport Test: Fiscal Year 1998 Status Report Yucca Mountain Site Characterization Program Deliverable SPU85M4

    SciTech Connect (OSTI)

    Bussod, G.Y.; Turin, H.J.; Lowry, W.E.

    1999-11-01

    This report describes the status of the Busted Butte Unsaturated Zone Transport Test (UZTT) and documents the progress of construction activities and site and laboratory characterization activities undertaken in fiscal year 1998. Also presented are predictive flow-and-transport simulations for Test Phases 1 and 2 of testing and the preliminary results and status of these test phases. Future anticipated results obtained from unsaturated-zone (UZ) transport testing in the Calico Hills Formation at Busted Butte are also discussed in view of their importance to performance assessment (PA) needs to build confidence in and reduce the uncertainty of site-scale flow-and-transport models and their abstractions for performance for license application. The principal objectives of the test are to address uncertainties associated with flow and transport in the UZ site-process models for Yucca Mountain, as identified by the PA working group in February 1997. These include but are not restricted to: (1) The effect of heterogeneities on flow and transport in unsaturated and partially saturated conditions in the Calico Hills Formation. In particular, the test aims to address issues relevant to fracture-matrix interactions and permeability contrast boundaries; (2) The migration behavior of colloids in fractured and unfractured Calico Hills rocks; (3) The validation through field testing of laboratory sorption experiments in unsaturated Calico Hills rocks; (4) The evaluation of the 3-D site-scale flow-and-transport process model (i.e., equivalent-continuum/dual-permeability/discrete-fracture-fault representations of flow and transport) used in the PA abstractions for license application; and (5) The effect of scaling from lab scale to field scale and site scale.

  19. Assessment of Bridge Inspection and Maintenance in the United States

    E-Print Network [OSTI]

    Kwok, Kin Yip George

    2009-01-01

    (Pennsylvania Department of Transportation, 2008). Pennsylvania DOT has its own special bridge maintenance manual and special maintenance plan for stone arch bridges as shown in Figure 2.9 (Pennsylvania Department of Transportation, 2008). Figure 2... bridges. Requires lead training and monitoring for workers. EPA; Resource Conservation and Recovery Act (RCRA ) Regulates the handling, storage, and disposal of lead (and other heavy metals) containing waste. Can increase the cost of disposal...

  20. THE CLASSIFICATION OF DEHN SURGERIES ON 2BRIDGE KNOTS

    E-Print Network [OSTI]

    Brittenham, Mark

    THE CLASSIFICATION OF DEHN SURGERIES ON 2­BRIDGE KNOTS Mark Brittenham and Ying­Qing Wu Abstract. We will determine whether a given surgery on a 2­bridge knot is reducible, toroidal, Seifert fibered surgeries are non­hyperbolic. Let K p=q be a 2­bridge knot associated to the rational number p=q. When p j

  1. 12th Annual Bridging Partnerships Small Business Symposium

    Broader source: Energy.gov [DOE]

    You’re Invited: Join the U.S. Department of Energy and Hanford Site Prime Contractors for the Bridging Partnerships Small Business Symposium!

  2. COLLOQUIUM: Compressed Air Energy Storage: The Bridge to Our...

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

    MBG Auditorium COLLOQUIUM: Compressed Air Energy Storage: The Bridge to Our Renewable Energy Future Mr. Al Cavallo Consultant Compressed air energy storage (CAES) is a proven,...

  3. Protein Bridges DNA Base and Nucleotide Excision Repair Pathways

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

    Bridges DNA Base and Nucleotide Excision Repair Pathways Print Alkyltransferase proteins (AGT) protect cells from the biological effects of DNA damage caused by the addition...

  4. Bridging the Divide Between Poverty Reduction and Climate Change...

    Open Energy Info (EERE)

    Bridging the Divide Between Poverty Reduction and Climate Change Through Sustainable and Innovative Energy Technologies Jump to: navigation, search Tool Summary LAUNCH TOOL Name:...

  5. Old Bridge, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Old Bridge, New Jersey: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.39295, -74.330035 Show Map Loading map... "minzoom":false,"mappingse...

  6. Title 33 CFR 115 Bridge Locations and Clearances: Administrative...

    Open Energy Info (EERE)

    Title 33 CFR 115 Bridge Locations and Clearances: Administrative Procedures Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- Federal...

  7. SMART BRIDGE: A Tool for Estimating the Military Load

    Office of Scientific and Technical Information (OSTI)

    information is described in the next section. Finally, the last section summarizes the SMART BRIDGE efforts. BIUDGE AND VEHICLE CLASSIFICATION The U . S . military uses the...

  8. Catalysis by Design: Bridging the Gap between Theory and Experiments...

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

    between Theory and Experiments Catalysis by Design: Bridging the Gap between Theory and Experiments Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research...

  9. Sandia Energy - Sandia Co-Hosts "Climate Risk Forum: Bridging...

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

    Co-Hosts "Climate Risk Forum: Bridging Climate Science and Actuarial Practice" Home Climate Water Security Facilities News Global Climate & Energy NISAC News & Events Analysis...

  10. Catalysis by Design: Bridging the Gap Between Theory and Experiments...

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

    Between Theory and Experiments at Nanoscale Level Catalysis by Design: Bridging the Gap Between Theory and Experiments at Nanoscale Level Studies on a simple platinum-alumina...

  11. Title 33 USC 401 Construction of Bridges, Causeways, Dams or...

    Open Energy Info (EERE)

    Title 33 USC 401 Construction of Bridges, Causeways, Dams or Dikes Generally; Exemptions Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document-...

  12. Bridged polysilsesquioxanes. Highly porous hybrid organic-inorganic materials

    SciTech Connect (OSTI)

    Loy, D.A. [Sandia National Labs., Albuquerque, NM (United States). Properties of Organic Materials Dept.; Shea, K.J. [Univ. of California, Irvine, CA (United States). Dept. of Chemistry

    1995-07-01

    This contribution reviews a new family of inorganic-organic hybrid materials that are assembled by sol-gel polymerization of polyfunctional molecular building blocks. These bridged polysilsesquioxanes are three-dimensional network materials that are distinguished by incorporation of an organic fragment as an integral component of the network. The intimate association of the organic and inorganic phase, a true molecular composite, coupled with the variability of the organic component, permits engineering of both chemical and physical properties of the material. The paper reviews bridged polysilsesquioxanes, arylene-bridged polysilsesquioxanes, alkylene-bridged polysilsesquioxanes; and their applications.

  13. CloudBridge: A Cloud-Powered System Enabling Mobile Devices to Control Peripherals Without Drivers

    E-Print Network [OSTI]

    Young, R. Michael

    , CloudBridge. CloudBridge user ap- plication running on a smart device works as a TCP bridge relaying on the other. Through the bridge, it is possible to issue operations from a smart device without having network Figure 1: The smart device in the middle works as a bridge connecting a cloud server

  14. Salt Bridge Formation, Rev 9.1.99 Warner Instrument Corporation1

    E-Print Network [OSTI]

    Movileanu, Liviu

    Salt Bridge Formation, Rev 9.1.99 Warner Instrument Corporation1 A procedure for the formation of agar salt bridges. The purpose of an agar salt bridge is to provide an electrical connection the following procedure to create salt bridges. This procedure involves: 1) formation of bridges 2) preparing

  15. Fabrication procedure effects on fatigue resistance of rib -to-deck welded joints of steel orthotropic bridge decks

    E-Print Network [OSTI]

    Sim, Hyoung-Bo

    2010-01-01

    International Orthotropic Bridge Conference (CD-ROM),fatigue evaluation of steel bridges. ” International Journalfor the Bronx-Whitestone Bridge rehabilitation. ” Journal of

  16. Semiconductor bridge, SCB, ignition of energetic materials

    SciTech Connect (OSTI)

    Bickes, R.W.; Grubelich, M.D.; Harris, S.M.; Merson, J.A.; Tarbell, W.W.

    1997-04-01

    Sandia National Laboratories` semiconductor bridge, SCB, is now being used for the ignition or initiation of a wide variety of exeoergic materials. Applications of this new technology arose because of a need at the system level to provide light weight, small volume and low energy explosive assemblies. Conventional bridgewire devices could not meet the stringent size, weight and energy requirements of our customers. We present an overview of SCB technology and the ignition characteristics for a number of energetic materials including primary and secondary explosives, pyrotechnics, thermites and intermetallics. We provide examples of systems designed to meet the modern requirements that sophisticated systems must satisfy in today`s market environments.

  17. Electronic bridge process in 229Th^+

    E-Print Network [OSTI]

    S. G. Porsev; V. V. Flambaum

    2010-04-28

    We have studied the effect of atomic electrons on the nuclear transition from the isomeric {229m}Th state to the ground {229g}Th state in {229}Th+ due to the electronic bridge process. The exact value of the nuclear transition frequency is unknown so far; therefore, we have developed a formalism that can be used for any nuclear transition frequency. We have calculated positions of several high-lying even-parity states which are not presented in experimental atomic spectra databases. We have found their energy levels and g factors.

  18. Bridging the Gap to 64-bit Computing

    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 OutreachProductswsicloudwsiclouddenDVA N C E D B L OBransen Plasma Asher An O2 RFand TechnicalBrianBridging

  19. Climate Bridge Ltd | 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 on QA:QA J-E-1 SECTION J APPENDIX E LISTStar EnergyLawler,Coal Technologies Place:Standards JumpAdvisers Jump to:Bridge

  20. BridgeLux | 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 on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC JumpBiossence JumpJerseyEconomy CountriesBreakthroughBridgeLux

  1. Golden Bridge Strategies | 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 on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEniaElectric JumpAtlasBridge Strategies Jump to:

  2. Dialkylenecarbonate-Bridged Polysilsesquioxanes. Hybrid Organic Sol-Gels with a Thermally Labile Bridging Group

    SciTech Connect (OSTI)

    Loy, D.A.; Beach, J.V.; Baugher, B.M.; Assink, R.A.; Shea, K.J.; Tran, J.; Small, J.H.

    1999-04-21

    In this paper, we introduce a new approach for altering the properties of bridged polysilsesquioxane xerogels using post-processing modification of the polymeric network. The bridging organic group contains latent functionalities that can be liberated thermally, photochemically, or by chemical means after the gel has been processed to a xerogel. These modifications can produce changes in density, volubility, porosity, and or chemical properties of the material. Since every monomer possesses two latent functional groups, the technique allows for the introduction of high levels of functionality in hybrid organic-inorganic materials. Dialkylenecarbonate-bridged polysilsesquioxane gels were prepared by the sol-gel polymerization of bis(triethoxysilylpropyl)carbonate (1) and bis(triethoxysilylisobutyl)-carbonate (2). Thermal treatment of the resulting non-porous xerogels and aerogels at 300-350 C resulted in quantitative decarboxylation of the dialkylenecarbonate bridging groups to give new hydroxyalkyl and olefinic substituted polysilsesquioxane monolithic xerogels and aerogels that can not be directly prepared through direct sol-gel polymerization of organotrialkoxysilanes.

  3. Volume 2, Chapter 7: Fitting the Bridge and the Nut The bridge and the nut are the places that support the strings and transmit the sound. [ If

    E-Print Network [OSTI]

    Binkley, Jim

    1 Volume 2, Chapter 7: Fitting the Bridge and the Nut The bridge and the nut are the places, then there will not be any sounds. Both (bridges) must be done right and then the (required) sounds will come in response.] They also have a function of making the fingering easier. The bridge is tall and half sunken into the face

  4. Evaluation of Lateral Behavior of Pile-Supported Bridges under Scour Conditions

    E-Print Network [OSTI]

    Lin, Cheng

    2012-05-31

    Scour is the removal of soils in the vicinity of bridge foundations, resulting in a reduced capacity of the foundations, which may lead to a bridge failure. Scour causes 60% of bridge failures in the United States. To ...

  5. Evaluation of a new bridge formula for regulation of truck weights 

    E-Print Network [OSTI]

    Contractor, Yateesh Jaykishan

    2005-11-01

    The current bridge formula, Federal Bridge Formula B (BFB), established in 1974 to protect bridges against excessive overstress, is very restrictive on long combination vehicles due to an 80,000 lb gross vehicle weight limit. Without this limit...

  6. Smart Suspension Systems for Bridge-Friendly Vehicles Yonghong Chena1

    E-Print Network [OSTI]

    Tsao, Tsu-Chin

    Smart Suspension Systems for Bridge-Friendly Vehicles Yonghong Chena1 , C.A. Tanb , L. A. Bergmanc to develop various designs of smart suspension systems for bridge-friendly vehicles. The bridge

  7. An Analysis of Bridge Abutment Shear Key Behavior due to Embankment Modeling and Earthquake Intensity

    E-Print Network [OSTI]

    Wasef, Nardin Mofid

    Tan, B. S. (August 1990). Bridge Abutments: Formulation ofLinear Analysis of Ordinary Bridges Crossing Fault-RuptureZones. Journal of Bridge Engineering, ASCE , 203-215. 15.

  8. Development of composite renewal systems for rapid rehabilitation and construction of bridge decks

    E-Print Network [OSTI]

    Pridmore, Anna Beth

    2009-01-01

    M.A. , Deck forms for girder bridges, in The Aberdeen Group.rebuilding the nation's bridges. 2008, American AssociationBettigole, N.H. , Replacing bridge decks. Civil Engineering,

  9. Building a Bridge for the Future with Professor Abolhassan Astaneh-Asl

    E-Print Network [OSTI]

    2013-01-01

    student had one building or bridge that they worked on forBuilding a Bridge for the Future with Professor Abolhassanas well. Buildings and bridges must be able to withstand a

  10. A bridge between worlds: understanding network structure to understand change strategy

    E-Print Network [OSTI]

    Daly, Alan J.; Finnigan, Kara S.

    2010-01-01

    138 DOI 10.1007/s10833-009-9102-5 A bridge between worlds:can be conceptualized as bridges between aspects of policysuggest the importance of a bridge between central of?ce and

  11. Competitiveness of Soil Carbon as an Option: Is it a Bridge to the

    E-Print Network [OSTI]

    McCarl, Bruce A.

    Competitiveness of Soil Carbon as an Option: Is it a Bridge to the Future? Competitiveness of Soil CarbonCompetitiveness of Soil Carbon as an Option: Is it a Bridge to theas an Option: Is it a Bridge

  12. Stochastic Life-cycle Analysis of Deteriorating Infrastructure Systems and an Application to Reinforced Concrete Bridges 

    E-Print Network [OSTI]

    Ramesh Kumar, 1982-

    2012-11-30

    investigates the effect of seismic degradation on the reliability of reinforced concrete (RC) bridges. For this purpose, we model the seismic degradation process in the RC bridge columns which are the primary lateral load resisting system in a bridge...

  13. The use of nondestructive testing methods for the condition assessment of concrete bridge girders

    E-Print Network [OSTI]

    Unruh, Richard Cornelius, 1974-

    2004-01-01

    There are over 594,000 publicly controlled bridges in the United States. Concrete and pre-stressed concrete bridges account for nearly 50% of the bridges in the US inventory. This proportion is increasing each year, as new ...

  14. REHABILITATION OF CONCRETE BRIDGES FOR SHEAR DEFICIENCY USING CFRP SHEETS

    E-Print Network [OSTI]

    applications, under the efforts of ISIS Canada, of using carbon fiber reinforced plastic (CFRP) sheets Creek Bridge in Alberta. KEY WORDS: bridges, carbon fiber reinforced plastics, concrete, girders, such as carbon, glass and ararnid fiber composites, have been considered for solutions to such problems

  15. Bridge over troubled facets by Scott Thumlert and Bruce Jamieson

    E-Print Network [OSTI]

    Jamieson, Bruce

    triggered it, it'll go big!" ­ smart skier "Dude, there's that wind crust in there that will for sure bridgeBridge over troubled facets by Scott Thumlert and Bruce Jamieson ASARC ­ Applied snow and avalanche hoar layer is probably in there." ­ smart skier "Well, we haven't seen any natural activity

  16. FATIGUE BEHAVIOR OF IMPACT DAMAGED PRESTRESSED CONCRETE BRIDGE GIRDER REPAIRED

    E-Print Network [OSTI]

    vehicles is a major expense for bridge maintenance departments. The use of Carbon Fiber Reinforced Polymer with one ruptured prestressing strand. The concrete section was restored with a polymer modified mortar loadings that all bridge girders undergo. The use of fiber-reinforced polymer (FRP) has emerged

  17. Electrical Resistivity Imaging for Unknown Bridge Foundation Depth Determination 

    E-Print Network [OSTI]

    Arjwech, Rungroj

    2012-02-14

    as suitable to investigate unknown bridge foundations. The objective of the present study is to apply advanced 2D electrical resistivity imaging (ERI) in order to identify depth of unknown bridge foundations. A survey procedure is carried out in mixed terrain...

  18. BRIDGING THE WEB OF DOCUMENTS WITH THE WEB OF DATA

    E-Print Network [OSTI]

    Tzitzikas, Yannis

    BRIDGING THE WEB OF DOCUMENTS WITH THE WEB OF DATA AT SEARCH TIME Yannis Tzitzikas University') Exploratory Search Semantic Web and Linked Data Faceted Exploration Bridging the Web of Documents with the Web of Data (50') Possible Ways Focus on doing this at search time Case studies: presented

  19. The Department of Visual & Dramatic Arts encourages, supports, and bridges

    E-Print Network [OSTI]

    Aazhang, Behnaam

    The Department of Visual & Dramatic Arts encourages, supports, and bridges artistic research program bridges a wide range of academic possibilities. One of the largest departments with regard of American Art in the Smithsonian; London Institute of Contemporary Arts; Museum of Fine Arts, Boston; Tacoma

  20. INNOVATION AND AESTHETICS IN BRIDGE ENGINEERING Paul Gauvreau

    E-Print Network [OSTI]

    Gauvreau, Paul

    . Maillart is not the only engineer to have designed bridges that link economy and aesthetic significanceINNOVATION AND AESTHETICS IN BRIDGE ENGINEERING Paul Gauvreau University of Toronto This article appeared in the Canadian Civil Engineer, Issue 23.5 (Winter 2006-2007) Robert Maillart's Salginatobel

  1. A Roadmap for Bridging Basic and Applied Research in

    E-Print Network [OSTI]

    Tomberlin, Jeff

    A Roadmap for Bridging Basic and Applied Research in Forensic Entomology J.K. Tomberlin,1 R. Mohr,1 sciences to develop a stronger scientific foundation. We suggest a roadmap for decomposition ecology to interpret entomological evidence collected from crime scenes. By following the proposed roadmap, a bridge

  2. First Smart Bridge in Canada A. Guha-Thakurta

    E-Print Network [OSTI]

    SUMMARY First Smart Bridge in Canada A. Guha-Thakurta City of Calgary, Calgary, Alberta, Canada A., Calgary, Alberta, Canada On November 5, 1993, the City of Calgary completed the construction of the first smart prestressed concrete highway bridge built in Canada. A total of six pretensioned girders

  3. OKLAHOMA DEPARTMENT OF TRANSPORTATION PAVEMENT AND BRIDGE DECK SMOOTHNESS REQUIREMENTS

    E-Print Network [OSTI]

    is defined. The specification applies to PFC (permeable friction course), OGFC (open graded friction course), HMA (hot mix asphalt), PCCP (P.C. concrete pavement) and Bridge Decks. Areas where 1/8 to 1/2 inch per apply to all types of Portland cement and asphalt concrete pavements as well as bridge decks. ODOT

  4. Bridging the Communication Gap a South African Perspective

    E-Print Network [OSTI]

    van Zijl, Lynette

    and policy, apart from technical assistance. In all our projects, we concentrate on bridging a communication on building communication bridges that can help caregivers and family to understand and communicate of charge. Since then, we collaborated with a German group on the statistical machine translation of sign

  5. Characterization of Mg/Al butt joints welded by gas tungsten arc filling with Zn–29.5Al–0.5Ti filler metal

    SciTech Connect (OSTI)

    Liu, Fei; Wang, Hongyang; Liu, Liming, E-mail: liulm@dlut.edu.cn

    2014-04-01

    The multivariate alloying design of a welding joint is used in the Mg to Al welding process. A Zn–29.5Al–0.5Ti alloy is added as filler metal in gas tungsten arc welding of Mg and Al alloy joint based on the analysis of Al and Mg alloy characteristics. The tensile strength, microstructure, and phase constitution of the weld seam are analyzed. The formation of brittle and hard Mg–Al intermetallic compounds is avoided because of the effects of Zn, Al, and Ti. The average tensile strength of the joint is 148 MPa. Al{sub 3}Ti is first precipitated and functions as the nucleus of heterogeneous nucleation during solidification. Moreover, the precipitated Al–MgZn{sub 2} hypoeutectic phase exhibited a feather-like structure, which enhances the property of the Mg–Al dissimilar joint. - Highlights: • Mg alloy AZ31B and Al alloy 6061 are butt welded by fusion welding. • The effect of Ti in filler metal is investigated. • The formation of Mg–Al intermetallic compounds is avoided.

  6. Controlling porosity in bridged polysilsesquioxanes through elimination reactions

    SciTech Connect (OSTI)

    McClain, M.D.; Loy, D.A. [Sandia National Labs., Albuquerque, NM (United States); Prabakar, S. [Univ. of New Mexico, Albuquerque, NM (United States). Advanced Materials Lab.

    1996-06-01

    The retro Diels-Alder reaction was used to modify porosity in hydrocarbon-bridged polysilsesquioxane gels. Microporous polysilsesquioxanes incorporating a thermally labile Diels-Alder adduct as the hydrocarbon bridging group were prepared by sol-gel polymerization of trans-2,3-bis(triethoxysilyl)norbornene. Upon heating the 2,3-norbornenylene-bridges polymers at temperatures above 250 C, the norbornenylene-bridging group underwent a retro Diels-Alder reaction losing cyclopentadiene and leaving behind a ethenylene-bridged polysilsesquioxane. Less than theoretical quantities of cyclopentadiene were volatilized indicating that some of the diene was either reacting with the silanol and olefinic rich material or undergoing oligomerization. Both scanning electron microscopy and nitrogen sorption porosimetry revealed net coarsening of pores (and reduction of surface area) in the materials with thermolysis.

  7. BRIDGE Frderung von Grndungen aus Hochschulen Unternehmensgrndung mit einem starken Partner

    E-Print Network [OSTI]

    Diekmann, Martin

    BRIDGE ­ Förderung von Gründungen aus Hochschulen Unternehmensgründung mit einem starken Partner:00 Uhr Cartesium, Rotunde, Enrique-Schmidt-Str. 5 Anmeldung und weitere Informationen: www.bridge

  8. VPR RESEARCH BRIDGE PROGRAM Objective: Toprovide short-term,limitedfinancial support whenexternallyfundedresearchprogramshave

    E-Print Network [OSTI]

    Kihara, Daisuke

    VPR RESEARCH BRIDGE PROGRAM Objective: Toprovide short-term,limitedfinancial support following: pastrecord of external funding,effortsunderwaytosecure external fundingbeyondthe bridge

  9. Structural Response and Cost Characterization of Bridge Construction using Seismic Performance Enhancement Strategies

    E-Print Network [OSTI]

    Aviram Traubita, Ady

    2009-01-01

    bridge components. The bearing devices are the main factorbearings, B-ICC record Bridge Seismic Response The following section presents the main

  10. Seismic Assessment and Retrofit of Existing Multi-Column Bent Bridges

    E-Print Network [OSTI]

    Seismic Assessment and Retrofit of Existing Multi-Column Bent Bridges By Cole C. Mc ................................................................................................................................... 6 Seismic Activity in Western Washington State Approach ­ Bridge Modeling .............................................11 Seismic Excitations

  11. Wave-Particle Behaviour in Bridge Theory

    E-Print Network [OSTI]

    Massimo Auci

    2012-01-22

    The Bridge Theory that is based on the role that the transversal component of the Pointing vector has in the localisation in the neighbourhood of a dipole of an amount of energy and momentum equal to ones of a photon of same frequency, if applied at the collision of a pair of real particles is able to describe their travel in space in agreement with the Relativistic Quantum Theory. This result suggests that Relativity and Quantum Mechanics despite their apparent incompatibility they become compatible if we assume the existence of a deepest level of reality in which is the electromagnetism to produce the quantum and relativistic effects in the matter allowing in the same context a dualism wave-particle equivalent to that hypothesized by Louis de Broglie.

  12. A bridge to lower overhead quantum computation

    E-Print Network [OSTI]

    Austin G. Fowler; Simon J. Devitt

    2013-04-09

    Two primary challenges stand in the way of practical large-scale quantum computation, namely achieving sufficiently low error rate quantum gates and implementing interesting quantum algorithms with a physically reasonable number of qubits. In this work we address the second challenge, presenting a new technique, bridge compression, which enables remarkably low volume structures to be found that implement complex computations in the surface code. The surface code has a number of highly desirable properties, including the ability to achieve arbitrarily reliable computation given sufficient qubits and quantum gate error rates below approximately 1%, and the use of only a 2-D array of qubits with nearest neighbor interactions. As such, our compression technique is of great practical relevance.

  13. Duality : A Bridge Between Physics And Philosophy?

    E-Print Network [OSTI]

    A. N. Mitra

    2006-05-12

    A generalized view of Duality is offered as a bridge between physical sciences and the more abstract philosophical dimensions bordering on mysticism. To that end several examples of duality are first cited from from conventional physics sectors to illustrate the obvious powers of this principle. These include items from reciprocity in Newtonian mechanics to the problem of measurement duality that characterizes quantum mechanics. It is also noted that the latter has acquired a renewed interest in recent times, consequent on the emergence of new experimental techniques for testing the actual laboratory outcomes of traditional gedanken experiments, hitherto taken for granted. Against this background, the Duality principle is sought to be extended to the mystical domain, with convincing examples from various human level experiences.

  14. Light Bridge in a Developing Active Region. II. Numerical Simulation of Flux Emergence and Light Bridge Formation

    E-Print Network [OSTI]

    Toriumi, Shin; Katsukawa, Yukio

    2015-01-01

    Light bridges, the bright structure dividing umbrae in sunspot regions, show various activity events. In Paper I, we reported on analysis of multi-wavelength observations of a light bridge in a developing active region (AR) and concluded that the activity events are caused by magnetic reconnection driven by magnetconvective evolution. The aim of this second paper is to investigate the detailed magnetic and velocity structures and the formation mechanism of light bridges. For this purpose, we analyze numerical simulation data from a radiative magnetohydrodynamics model of an emerging AR. We find that a weakly-magnetized plasma upflow in the near-surface layers of the convection zone is entrained between the emerging magnetic bundles that appear as pores at the solar surface. This convective upflow continuously transports horizontal fields to the surface layer and creates a light bridge structure. Due to the magnetic shear between the horizontal fields of the bridge and the vertical fields of the ambient pores,...

  15. Metallicity and Physical Conditions in the Magellanic Bridge

    E-Print Network [OSTI]

    N. Lehner; J. C. Howk; F. P. Keenan; J. V. Smoker

    2008-01-16

    We present a new analysis of the diffuse gas in the Magellanic Bridge (RA>3h) based on HST/STIS E140M and FUSE spectra of 2 early-type stars lying within the Bridge and a QSO behind it. We derive the column densities of HI (from Ly\\alpha), NI, OI, ArI, SiII, SII, and FeII of the gas in the Bridge. Using the atomic species, we determine the first gas-phase metallicity of the Magellanic Bridge, [Z/H]=-1.02+/-0.07 toward one sightline, and -1.7Bridge gas along our three lines of sight is ~70-90% ionized, despite high HI columns, logN(HI)=19.6-20.1. Possible sources for the ongoing ionization are certainly the hot stars within the Bridge, hot gas (revealed by OVI absorption), and leaking photons from the SMC and LMC. From the analysis of CII*, we deduce that the overall density of the Bridge must be low (<0.03-0.1 cm^-3). We argue that our findings combined with other recent observational results should motivate new models of the evolution of the SMC-LMC-Galaxy system.

  16. Einstein-Rosen "Bridge" Needs Lightlike Brane Source

    E-Print Network [OSTI]

    Eduardo Guendelman; Alexander Kaganovich; Emil Nissimov; Svetlana Pacheva

    2009-10-25

    The Einstein-Rosen "bridge" wormhole solution proposed in the classic paper [1] does not satisfy the vacuum Einstein equations at the wormhole throat. We show that the fully consistent formulation of the original Einstein-Rosen "bridge" requires solving Einstein equations of bulk D=4 gravity coupled to a lightlike brane with a well-defined world-volume action. The non-vanishing contribution of Einstein-Rosen "bridge" solution to the right hand side of Einstein equations at the throat matches precisely the surface stress-energy tensor of the lightlike brane which automatically occupies the throat ("horizon straddling") - a feature triggered by the world-volume lightlike brane dynamics.

  17. Light Bridge in a Developing Active Region. I. Observation of Light Bridge and its Dynamic Activity Phenomena

    E-Print Network [OSTI]

    Toriumi, Shin; Cheung, Mark C M

    2015-01-01

    Light bridges, the bright structures that divide the umbra of sunspots and pores into smaller pieces, are known to produce wide variety of activity events in solar active regions (ARs). It is also known that the light bridges appear in the assembling process of nascent sunspots. The ultimate goal of this series of papers is to reveal the nature of light bridges in developing ARs and the occurrence of activity events associated with the light bridge structures from both observational and numerical approaches. In this first paper, exploiting the observational data obtained by Hinode, IRIS, and Solar Dynamics Observatory (SDO), we investigate the detailed structure of the light bridge in NOAA AR 11974 and its dynamic activity phenomena. As a result, we find that the light bridge has a weak, horizontal magnetic field, which is transported from the interior by large-scale convective upflow and is surrounded by strong, vertical fields of adjacent pores. In the chromosphere above the bridge, a transient brightening ...

  18. IMPACT OF DIAPHRAGMS ON SEISMIC PERFORMANCE OF EXISTING SLAB-ON-GIRDER STEEL BRIDGES

    E-Print Network [OSTI]

    Bruneau, Michel

    of seismic ductile detailing provisions for steel bridges in all bridge design codes to date partly explains literature on the seismic evaluation and/or design of bridges (e.g. Seismic 1981; Ontario 1991; American 1994IMPACT OF DIAPHRAGMS ON SEISMIC PERFORMANCE OF EXISTING SLAB-ON-GIRDER STEEL BRIDGES by Seyed Mehdi

  19. Gene-expression programming to predict scour at a bridge abutment

    E-Print Network [OSTI]

    Fernandez, Thomas

    Gene-expression programming to predict scour at a bridge abutment H. Md. Azamathulla ABSTRACT networks, bridge abutments, gene-expression programming, local scour, radial basis function NOTATION L is a major cause of the failure of bridge abutments. Failure of bridges due to scour at their foundations

  20. BRIDGE NUMBERS FOR VIRTUAL AND WELDED KNOTS HANS U. BODEN AND ANNE ISABEL GAUDREAU

    E-Print Network [OSTI]

    Boden, Hans U.

    BRIDGE NUMBERS FOR VIRTUAL AND WELDED KNOTS HANS U. BODEN AND ANNE ISABEL GAUDREAU Abstract. Using Gauss diagrams, one can define the virtual bridge number vb(K) and the welded bridge number wb and Manturov showed that vb(K) = br(K), the bridge number as a classical knot, and we ask whether the same

  1. Anatomy of Bridge Flutter: Some New Insights Xinzhong Chen, Ahsan Kareem

    E-Print Network [OSTI]

    Kareem, Ahsan

    Anatomy of Bridge Flutter: Some New Insights Xinzhong Chen, Ahsan Kareem NatHaz Modeling Laboratory accuracy and effectiveness are demonstrated through a flutter analysis of a cable-stayed bridge and aerodynamics on bridge flutter, which helps in better tailoring of the bridge structural systems and deck

  2. Bridge Courses in the United States Student:Andrew Pyzdek Faculty Advisor: Dorin Dumitrascu

    E-Print Network [OSTI]

    Fatkullin, Ibrahim

    Bridge Courses in the United States Student:Andrew Pyzdek Faculty Advisor: Dorin Dumitrascu, and the approach taken by American universities when offering a "bridge course." We understand a "bridge course bridge course at the University of Arizona, Math 323 -Formal Mathematical Reasoning and Writing

  3. BEHAVIOR OF BRIDGE DECKS REINFORCED WITH MMFX Hatem Seliem

    E-Print Network [OSTI]

    to failure using concentrated loads to simulate the effect of truck wheel load. The use of MMFX steel as main flexural reinforcement in bridge decks was evaluated in light of test results. A non-linear finite element

  4. Design methodologies for the seismic retrofitting of bridges

    E-Print Network [OSTI]

    Otenti, Alexander A. (Alexander Alfred), 1981-

    2004-01-01

    This paper formulates an earthquake design strategy for bridges. Earthquakes can cause extreme economic damage and loss of life. Structural engineers must be conscience of earthquake slip type, earthquake proximity, and ...

  5. Acetate-Bridged Platinum(III) Complexes Derived from Cisplatin

    E-Print Network [OSTI]

    Wilson, Justin J.

    Oxidation of the acetate-bridged half-lantern platinum(II) complex cis-[Pt[superscript II](NH[subscript 3])[subscript 2](?-OAc)[subscript 2]Pt[superscript II](NH[subscript 3])[subscript 2

  6. SolarBridge Technologies: Helping Solar Modules Speak the Language...

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

    into grid-friendly alternating current (AC). SolarBridge will partner with a U.S.-based PV module manufacturer to provide a cost-reduced AC module with a preinstalled...

  7. BRIDGE: Branching Ratio Inquiry/Decay Generated Events

    E-Print Network [OSTI]

    Patrick Meade; Matthew Reece

    2007-10-24

    We present the manual for the program BRIDGE: Branching Ratio Inquiry/Decay Generated Events. The program is designed to operate with arbitrary models defined within matrix element generators, so that one can simulate events with small final-state multiplicities, decay them with BRIDGE, and then pass them to showering and hadronization programs. BRI can automatically calculate widths of two and three body decays. DGE can decay unstable particles in any Les Houches formatted event file. DGE is useful for the generation of event files with long decay chains, replacing large matrix elements by small matrix elements followed by sequences of decays. BRIDGE is currently designed to work with the MadGraph/MadEvent programs for implementing and simulating new physics models. In particular, it can operate with the MadGraph implementation of the MSSM. In this manual we describe how to use BRIDGE, and present a number of sample results to demonstrate its accuracy.

  8. Fatigue tests of under-strenghth timber railroad bridge stringers 

    E-Print Network [OSTI]

    Borchers, Christopher Ryan

    2002-01-01

    As the ability to obtain high-grade material becomes more difficult, assessing the value of under-strength timber for use in maintaining timber railroad bridges has become increasingly important. The objective of this ...

  9. Mag-Foot: a steel bridge inspection robot

    E-Print Network [OSTI]

    Asada, Harry

    A legged robot that moves across a steel structure is developed for steel bridge inspection. Powerful permanent magnets imbedded in each foot allow the robot to hang from a steel ceiling powerlessly. Although the magnets ...

  10. History and technology of Lemuel Chenoweth's covered bridges

    E-Print Network [OSTI]

    Gleave, Daniel Richard

    2014-01-01

    Lemuel Chenoweth was a carpenter and bridge builder who played a key role in the development of the infrastructure of antebellum Virginia. Theodore Burr and Lewis Wernwag are among the designers who influenced the structure ...

  11. Use of fiber reinforced polymer composite in bridge structures

    E-Print Network [OSTI]

    Tuakta, Chakrapan, 1980-

    2005-01-01

    Fiber reinforced polymer composite (FRP) is a new construction material, gradually gaining acceptance from civil engineers. Bridge engineering is among the fields in civil engineering benefiting from the introduction of ...

  12. Cathodic Protection of the Yaquina Bay Bridge

    SciTech Connect (OSTI)

    Bullard, Sophie J.; Cramer, Stephen D.; Covino, Bernard S., Jr.; Holcomb, Gordon R.; Russell, James H.; Laylor, H.M.; Cryer, C.B.

    2001-02-01

    The Yaquina Bay Bridge in Newport, Oregon, was designed by Conde B. McCullough and built in 1936. The 3,223-foot (982 m) structure is a combination of concrete arch approach spans and a steel through arch over the shipping channel. Cathodic protection is used to prevent corrosion damage to the concrete arches. The Oregon Department of Transportation (Oregon DOT) installed a carbon anode coating (DAC-85) on two of the north approach spans in 1985. This anode was operated at a current density of 6.6 mA/m2(0.6 mA/ft2). No failure of the conductive anode was observed in 1990, five years after application, or in 2000, 15 years after application. Thermal-sprayed zinc anodes 20 mils (0.5 mm) thick were applied to half the south approach spans beginning in 1990. Thermal-sprayed zinc anodes 15 mils (0.4 mm) thick were applied to the remaining spans in 1996. These anodes were operated at a current density of 2.2 mA/m2(0.2 mA/ft2). In 1999, four zones on the approach spans were included in a two-year field trial of humectants to improve zinc anode performance. The humectants LiNO3 and LiBr were applied to two zones; the two adjacent zones were left untreated as controls. The humectants substantially reduced circuit resistance compared to the controls.

  13. Evaluation of an existing bridge`s modal properties using simplified finite element analysis

    SciTech Connect (OSTI)

    Farrar, C.R.; Duffey, T.A.

    1996-02-01

    The purpose of this paper is to present results of a simplified approach to the dynamic finite element modeling of composite girder-slab bridges using a single beam element to represent the girder-slab cross section. Dynamic properties calculated with these simplified models are compared to experimental results and results obtained from more detailed shell element models. The method for modeling flexural behavior is first discussed followed by a discussion of modeling torsional behavior. The beam element models accurately calculated the mode shapes of the structure, but the associated resonant frequencies showed some error.

  14. Mill Creek Summit Lovejoy Buttes

    E-Print Network [OSTI]

    -CDMG 10% in 50 yr WGCE 50% in 1000 yr Ward 2% in 50 yr Stirling & Wesnousky 2% in 50 yr in Brune (1996 Summit, previously classified as Engineering Rock "A" (>760 m/s 30-m average shear-wave velocity

  15. Gordon Butte | 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 on QA:QA J-E-1 SECTION J APPENDIXsource History View New Pages RecentPlantMagma EnergyGoogle lends support to the

  16. Dialkylene carbonate-bridged polysilsesquioxanes. Hybrid organic-inorganic sol-gels with a thermally labile bridging group

    SciTech Connect (OSTI)

    Loy, D.A.; Beach, J.V.; Baugher, B.M.; Assink, R.A.; Shea, K.J.; Tran, J.; Small, J.H.

    1999-11-01

    In this paper, the authors introduce a new approach for altering the properties of bridged polysilsesquioxane xerogels using postprocessing modification of the polymeric network. The bridging organic group contains latent functionalities that can be liberated thermally, photochemically, or chemically after the gel has been processed to a xerogel. These modifications can produce changes in density, solubility, porosity, and or chemical properties of the material. Since every monomer possesses two latent functional groups, the technique allows for the introduction of high levels of functionality in hybrid organic-inorganic materials. Dialkylene carbonate-bridged polysilsesquioxane gels were prepared by the sol-gel polymerization of bis(triethoxysilylpropyl) carbonate and bis(triethoxysilylisobutyl) carbonate. Thermal treatment of the resulting nonporous xerogels and aerogels at 300--350 C resulted in quantitative decarboxylation of the dialkylene carbonate bridging groups to give new hydroxyalkyl and olefinic substituted polysilsesquioxane monolithic xerogels and aerogels that cannot be directly prepared through direct sol-gel polymerization of organotrialkoxysilanes.

  17. The Making and Un-Making of the San Francisco-Oakland Bay Bridge: A Case in Megaproject Planning and Decisionmaking

    E-Print Network [OSTI]

    Frick, Karen Trapenberg

    2005-01-01

    292. Alan Trachtenberg, Brooklyn Bridge: Fact and Symbol (1991. Trachtenberg, Alan. Brooklyn Bridge: Fact and Symbol.claims that the Brooklyn Bridge “…was an American version of

  18. Dynamics of Molecular Motors in Reversible Burnt-Bridge Models

    E-Print Network [OSTI]

    Maxim N. Artyomov; Alexander Yu. Morozov; Anatoly B. Kolomeisky

    2009-11-22

    Dynamic properties of molecular motors whose motion is powered by interactions with specific lattice bonds are studied theoretically with the help of discrete-state stochastic "burnt-bridge" models. Molecular motors are depicted as random walkers that can destroy or rebuild periodically distributed weak connections ("bridges") when crossing them, with probabilities $p_1$ and $p_2$ correspondingly. Dynamic properties, such as velocities and dispersions, are obtained in exact and explicit form for arbitrary values of parameters $p_1$ and $p_2$. For the unbiased random walker, reversible burning of the bridges results in a biased directed motion with a dynamic transition observed at very small concentrations of bridges. In the case of backward biased molecular motor its backward velocity is reduced and a reversal of the direction of motion is observed for some range of parameters. It is also found that the dispersion demonstrates a complex, non-monotonic behavior with large fluctuations for some set of parameters. Complex dynamics of the system is discussed by analyzing the behavior of the molecular motors near burned bridges.

  19. The Magellanic Bridge: The Nearest Purely Tidal Stellar Population

    E-Print Network [OSTI]

    Jason Harris

    2006-12-04

    We report on observations of the stellar populations in twelve fields spanning the region between the Magellanic Clouds, made with the Mosaic-II camera on the 4-meter telescope at the Cerro-Tololo Inter-American Observatory. The two main goals of the observations are to characterize the young stellar population (which presumably formed in situ in the Bridge and therefore represents the nearest stellar population formed from tidal debris), and to search for an older stellar component (which would have been stripped from either Cloud as stars, by the same tidal forces which formed the gaseous Bridge). We determine the star-formation history of the young inter-Cloud population, which provides a constraint on the timing of the gravitational interaction which formed the Bridge. We do not detect an older stellar population belonging to the Bridge in any of our fields, implying that the material that was stripped from the Clouds to form the Magellanic Bridge was very nearly a pure gas.

  20. Synthesis and characterization of bridged polysilsesquioxane-polydimethylisiloxane nanocomposites

    SciTech Connect (OSTI)

    Loy, D.A.; Ulibarri, T.A.; Bates, S. [Sandia National Labs., Albuquerque, NM (United States)] [and others

    1995-12-31

    In order to further probe short chain and linkage effects in bimodal polymer networks, a new class of nanocomposites based on hydroxy terminated polydimethylsiloxanes as the long chain segments and alkylene or arylene bridged silsesquioxanes as the short chain segments was prepared. The materials were generated by tin-catalyzed coupling of the terminal hydroxy groups of the PDMS segments with bis(triethoxysilyl)arylene and alkylene monomers. The advantage of using the bridged silsesquioxane monomers is that the crosslinking sites are covalently attached to the short chain segments. This permits the final nanocomposite materials to be readily prepared by condensation of these short segments with the long PDMS segments. A number of different hydrocarbon bridged monomers can be used to determine the effect that the of short segment flexibility and length and the degree of crosslinking has on the final material properties.

  1. Porosity in hexylene-bridged polysilsesquioxanes: Effects of monomer concentration

    SciTech Connect (OSTI)

    Baugher, B.; Loy, D.A.; Assink, R.A. [Sandia National Labs., Albuquerque, NM (United States); Prabakar, S. [Advanced Materials Lab., Albuquerque, NM (United States); Shea, K.J.; Oviatt, H. [California Univ., Irvine, CA (United States). Dept. of Chemistry

    1994-12-31

    Hexylene-bridged polysilsesquioxanes can be prepared as mesoporous or non-porous xerogels simply by switching from basic to acidic polymerization conditions. In this study, we looked at the effect of monomer concentration on porosity of hexylene-bridged xerogels prepared under acidic and basic conditions. 1, 6-Hexylene-bridged polysilsesquioxanes were prepared by sol-gel polymerizations of 1, 6-bis(triethoxysilyl)hexane 1 with concentrations between 0. 1 to 1.2 M in ethanol. Gelation times ranged from seconds for 1.2 M concentration to months for 0.2 M. The gels were processed into xerogels by an aqueous work-up and the dry gels characterized by scanning electron microscopy (SEM), solid state {sup 13}C and {sup 29}Si CP MAS NMR spectroscopy, and gas sorption porosimetry.

  2. Origin of porosity in arylene-bridged polysilsesquioxanes

    SciTech Connect (OSTI)

    Schaefer, D.W.; Loy, D.A.; Ulibarri, T.A.; Black, E.; Buss, R.J. [Sandia National Labs., Albuquerque, NM (United States); Beaucage, G.B. [Univ. of Cincinnati, OH (United States). Materials Science and Engineering; Shea, K.J. [Univ. of California, Irvine, CA (United States). Dept. of Chemistry

    1996-12-31

    The authors investigate the porosity of a series of xerogels prepared from arylene-bridged silsesquioxane xerogels as a function of organic bridging group, condensation catalyst and post-synthesis plasma treatment to remove the organic functionalities. They conclude that porosity is controlled by polymer-solvent phase separation in the solution with no evidence of organic-inorganic phase separation. As the polymer grows and crosslinks, it becomes increasingly incompatible with the solvent and eventually microphase separates. The domain structure is controlled by a balance of network elasticity and non-bonding polymer-solvent interactions. The bridging organic groups serve to ameliorate polymer-solvent incompatibility. As a result, when the polymer does eventually phase separate, the rather tightly crosslinked network limits domain size to tens of angstroms, substantially smaller than that observed in xerogels obtained from purely inorganic precursors where incompatibility drives phase separation earlier in the gelation sequence.

  3. The Hydrogeologic Character of the Lower Tuff Confining Unit and the Oak Springs Butte Confining Unit in the Tuff Pile Area of Central Yucca Flat

    SciTech Connect (OSTI)

    Drellack, Jr., Sigmund L.; Prothro, Lance B.; Gonzales, Jose L.; Mercadante, Jennifer M.

    2010-07-30

    The lower tuff confining unit (LTCU) in the Yucca Flat Corrective Action Unit (CAU) consists of a monotonous sequence of pervasively zeolitized volcanic tuff (i.e., mostly bedded with lesser nonwelded to poorly welded tuff; not fractured) (Bechtel Nevada, 2006). The LTCU is an important confining unit beneath Yucca Flat because it separates the alluvial and volcanic aquifers, where many underground nuclear tests were conducted, from the regional lower carbonate aquifer. Recent sub-CAU-scale modeling by Los Alamos National Laboratory in the Tuff Pile area of Yucca Flat (Boryta, et al., in review) includes postulated low-porosity, high-permeability zones (i.e., fractured welded-tuff aquifers) within the LTCU. This scenario indicates that such postulated low-porosity, high-permeability zones could provide fast-path lateral conduits to faults, and eventually to the lower carbonate aquifer. A fractured and faulted lower carbonate aquifer is postulated to provide a flow path(s) for underground test-derived contaminants to potential offsite receptors. The ramifications of such a scenario are obvious for groundwater flow and contaminant migration beneath Yucca Flat. This paper describes the reasoning for not including postulated low-porosity, high-permeability zones within the LTCU in the Tuff Pile area or within the LTCU in the Yucca Flat CAU-scale model. Both observational and analytical data clearly indicate that the LTCU in the Tuff Pile area consists of pervasively zeolitic, nonwelded to poorly welded tuffs that are classified as tuff confining units (i.e., high-porosity, low-permeability). The position regarding the LTCU in the Tuff Pile area is summarized as follows: • The LTCU in the Tuff Pile area consists of a monotonous sequence of predominantly zeolitic nonwelded to poorly welded tuffs, and thus is accurately characterized hydrogeologically as a tuff confining unit (aquitard) in the Yucca Flat-Climax Mine hydrostratigraphic framework model (Bechtel Nevada, 2006). • No welded-tuff (or lava-flow aquifers), referred to as low-porosity, high-permeability zones in Boryta et al. (in review), are present within the LTCU in the Tuff Pile area. • Fractures within the LTCU are poorly developed, a characteristic of zeolitic tuffs; and fracture distributions are independent of stratigraphic and lithologic units (Prothro, 2008). • Groundwater flow and radionuclide transport will not be affected by laterally extensive zones of significantly higher permeability within the LTCU in the Tuff Pile area. Although not the primary focus of this report, the hydrogeologic character of the Oak Spring Butte confining unit (OSBCU), located directly below the LTCU, is also discussed. The OSBCU is lithologically more diverse, and does include nonwelded to partially welded ash-flow tuffs. However, these older ash-flow tuffs are poorly welded and altered (zeolitic to quartzofeldspathic), and consequently, would tend to have properties similar to a tuff confining unit rather than a welded-tuff aquifer.

  4. Lasers as a Bridge between Atomic and Nuclear Physics

    E-Print Network [OSTI]

    Sergei G. Matinyan

    1997-06-02

    This paper reviews the application of optical and UV laser radiation to several topics in low-energy nuclear physics. We consider the laser-induced nuclear anti-Stokes transitions, the laser-assisted and the laser-induced internal conversion, and the Electron Bridge and Inverse Electron Bridge mechanisms as tools for deexciting and exciting of low-lying nuclear isomeric states. A study of the anomalous, by low-lying, nuclear isomeric states (on an example of the $^{229}$Th nucleus) is presented in detail.

  5. Collective Molecular Dynamics of a Floating Water Bridge

    E-Print Network [OSTI]

    Emilio Del Giudice; Elmar C. Fuchs; Giuseppe Vitiello

    2010-04-06

    When a high voltage is applied to pure water filling two beakers kept close to each other, a connection forms spontaneously, giving the impression of a floating water bridge. This phenomenon is of special interest, since it comprises a number of phenomena currently tackled in modern water science. The formation and the main properties of this floating water bridge are analyzed in the conceptual framework of quantum electrodynamics. The necessary conditions for the formation are investigated as well as the time evolution of the dynamics. The predictions are found in agreement with the observations.

  6. Rev. of The Great East River Bridge / 1883-1983

    E-Print Network [OSTI]

    Levine, Stuart

    1983-01-01

    lecturing and, they fear, people will fail to " s e e . " But the Brooklyn Bridge is an extraordinary document of a number of different things, and the design­ ers of this exhibition bravely decided not to shy away from telling more than one story... almost concludes that the Brooklyn Bridge caused analytical cubism, the "force l ines" in 20th-century American painters, even abstrac­ tion itself. The show is admirable for not talking down to its audience. Neither does the book (New York: Harry N...

  7. The Cost of the Technological Sublime: Daring Ingenuity and the new San Francisco-Oakland Bay Bridge

    E-Print Network [OSTI]

    Frick, Karen Trapenberg

    2008-01-01

    Cruz. ‘Unity Towers East Bay Bridge‘, New East Span ProposalSubmitted to MTC Bay Bridge Design Task Force, 6 May.Francisco- Oakland Bay Bridge, T.Y. Lin International and

  8. Inspection, Assessment, and Repair of Grouted Ducts in Post-tensioned Bridge 

    E-Print Network [OSTI]

    Im, Seok Been

    2011-02-22

    Segmental post-tensioned (PT) bridges are major structures that carry significant traffic. Recent investigations of these bridges have identified voids in their ducts. and some of these exposed strands at these void locations are undergoing...

  9. Electrochemical characterization and time-variant structural reliability assessment of post-tensioned, segmental concrete bridges 

    E-Print Network [OSTI]

    Pillai Gopalakrishnan, Radhakris

    2010-07-14

    on PT bridges have reported the presence of voids, moisture, and chlorides inside grouted ducts as the major cause of accelerated corrosion of strands. Corrosion of the strands has resulted in PT bridge failures in Europe and tendon failures...

  10. 1. A 13-card bridge hand is selected at random from a standard 52 ...

    E-Print Network [OSTI]

    2015-07-31

    Solution: Let S denote the set of all bridge hands, |S| = (52. 13. ). Let E denote the set of bridge hands with 5 cards in one suite, 4 cards in two suites, and one ...

  11. DOE Publishes 20K Hour Testing Results for 2008 GATEWAY Bridge...

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

    20K Hour Testing Results for 2008 GATEWAY Bridge Installation DOE Publishes 20K Hour Testing Results for 2008 GATEWAY Bridge Installation October 9, 2014 - 12:00pm Addthis The U.S....

  12. Use of CFRP Overlays to Repair Fatigue Damage in Steel Bridge Girders and Components

    E-Print Network [OSTI]

    Gangel, Regan Elisabeth

    2012-05-31

    Fatigue damage in steel girder bridges built prior to the mid-1980s is common due to distortion-induced fatigue. Different repair techniques have been developed and implemented to retrofit bridges of this era with existing ...

  13. An Analytical Evaluation of Distortion-Induced Fatigue in Steel Bridges

    E-Print Network [OSTI]

    Hassel, Heidi L.

    2011-02-04

    Multi-girder steel bridges designed prior to the mid-1980's, have developed cracks due to distortion-induced fatigue. An analytical evaluation was conducted to better understand the effects of bridge configurations and ...

  14. Nonlinear seismic response of Mexican bridges with base isolation accounting for soil structure interaction effects 

    E-Print Network [OSTI]

    Olmos Navarrete, Bertha Alejandra

    2009-05-15

    A parametric analysis of typical base isolated bridges was conducted. The bridges were located in different soil types and were subjected to three different earthquakes (recorded on soft and medium soils). The work had two ...

  15. Evaluation of Multiple Corrosion Protection Systems for Reinforced Concrete Bridge Decks

    E-Print Network [OSTI]

    Draper, Jason Leigh

    2009-12-09

    Chloride-induced corrosion is one of the leading causes of premature serviceability failure in reinforced concrete bridge decks. In an effort to mitigate the effect of corrosion on the longevity of concrete bridge decks, several corrosion protection...

  16. CEE 812 Structural Engineering Seminar Series DMC Heart Hospital Pedestrian Bridge

    E-Print Network [OSTI]

    Kamat, Vineet R.

    CEE 812 ­ Structural Engineering Seminar Series DMC Heart Hospital Pedestrian Bridge by Carrie of the pedestrian bridge truss HSS connections for design and fabrication. It will further explore the challenges

  17. Alternative designs of pier-scour protection for the Gupo and Subway Bridge

    E-Print Network [OSTI]

    Julien, Pierre Y.

    Alternative designs of pier-scour protection for the Gupo and Subway Bridge on the Lower Nakdong.1 Alternative plans for the Gupo Bridge piers........................................................... 17 5.2 Alternative plan III

  18. Extreme Hurricane Surge Estimation for Texas Coastal Bridges Using Dimensionless Surge Response Functions 

    E-Print Network [OSTI]

    Song, Youn Kyung

    2010-10-12

    Since the devastating hurricane seasons of 2004, 2005, and 2008, the stability and serviceability of coastal bridges during and following hurricane events have become a main public concern. Twenty coastal bridges, critical for hurricane evacuation...

  19. 12th Annual Bridging Partnerships Small Business Symposium

    Broader source: Energy.gov [DOE]

    Sponsored by the U.S. Department of Energy's Office of Small and Disadvantaged Business Utilization and the Hanford Small Business Council, the 12th Annual Bridging Partnerships Small Business Symposium is an opportunity to meet and network business peers, government officials and stakeholders. The Symposium includes breakout sessions, networking availabilities and a business opportunity expo.

  20. Bridging By Design: The Curation and Management of Digital Assets

    E-Print Network [OSTI]

    Oard, Doug

    Bridging By Design: The Curation and Management of Digital Assets Specialization at the University on instruction in the creation, management and use, long-term preservation, and access to digital assets the effective curation and management of digital assets in the public, private, and not-for- profit sectors

  1. Plastic Hinging Behavior of Reinforced Concrete Bridge Columns

    E-Print Network [OSTI]

    Firat Alemdar, Zeynep

    2010-04-27

    of the seismic performance of four-span large-scale bridge systems at the University of Nevada Reno that details deformations in column hinging regions during response to strong shaking events. In order to evaluate the plastic hinging regions, a photogrammetric...

  2. Vincent Thomas Bridge Vibration Debasis Karmakar, Ho Lee

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    detailed model First mode of the detailed model has pretty good match with the system ID results EvaluationVincent Thomas Bridge Vibration Debasis Karmakar, Ho Lee Faculty Advisor: Prof. Masanobu Shinozuka: Caltrans Structural Modifications Damper First mode is little bit stiffer in case of simple model than

  3. Bridging Relational Database History and the Web: the XML Approach

    E-Print Network [OSTI]

    Zaniolo, Carlo

    Bridging Relational Database History and the Web: the XML Approach Fusheng Wang Integrated Data and queries, and make it easy to pub- lish database history to the Web. In this paper, we focus on the problem of preserving, publishing, and querying ef- ficiently the history of a relational database. Past research

  4. Comment on `Nanoscale water capillary bridges under deeply negative

    E-Print Network [OSTI]

    Balibar, Sébastien

    saturated vapor pressure Psat. Because of the cohesion forces between particles, the pressure can evenComment on `Nanoscale water capillary bridges under deeply negative pressure' [Chem. Phys. Lett micro- scope tip and a silicon wafer. They deduced the pressure of liquid water inside the capillary

  5. Herbig Ae/Be Stars in the Magellanic Bridge

    E-Print Network [OSTI]

    Shogo Nishiyama; Yasuaki Haba; Daisuke Kato; Daisuke Baba; Hirofumi Hatano; Motohide Tamura; Yasushi Nakajima; Akika Ishihara; Tetsuya Nagata; Koji Sugitani; Noriyuki Matsunaga; Hinako Fukushi; Nobuhiko Kusakabe; Shuji Sato

    2007-02-20

    We have found Herbig Ae/Be star candidates in the western region of the Magellanic Bridge. Using the near infrared camera SIRIUS and the 1.4 m telescope IRSF, we surveyed about 3.0 deg x 1.3 deg (24 deg Bridge, we estimate that about 80 (about 40%) of the candidates are likely to be Herbig Ae/Be stars. We also found one concentration of the candidates at the young star cluster NGC 796, strongly suggesting the existence of pre-main-sequence (PMS) stars in the Magellanic Bridge. This is the first detection of PMS star candidates in the Magellanic Bridge, and if they are genuine PMS stars, this could be direct evidence of recent star formation. However, the estimate of the number of Herbig Ae/Be stars depends on the fraction of classical Be stars, and thus a more precise determination of the Be star fraction or observations to differentiate between the Herbig Ae/Be stars and classical Be stars are required.

  6. PERFORMANCE OF BRIDGE TIMBER TIES UNDER STATIC AND DYNAMIC LOADING

    E-Print Network [OSTI]

    sections machined from the same timber ties. Material properties of timber were obtained using bending and Rizkalla, 1990). The ties were standard bridge ties, 255 mm x 304 mm (10 in x 12 in) in cross-section x 3 halfway between ties #4 and #5 at the center of the 6 m rail segment, as shown in Figure 1. The load

  7. BEHAVIOR OF BRIDGE DECKS REINFORCED WITH MMFX STEEL HATEM SELIEM

    E-Print Network [OSTI]

    steel in bridge decks. The paper also presents the effects bending MMFX steel bars on their tensile, Corrosion, High-Strength Steel, MMFX, Flexure, Punching Shear. ABSTRACT This paper describes the behavior reinforcement. In addition, for the new steel to be accepted as transverse reinforcement, the effects of bending

  8. Fracture Toughness of MDF and other Materials with Fiber Bridging

    E-Print Network [OSTI]

    Nairn, John A.

    Fracture Toughness of MDF and other Materials with Fiber Bridging Noah Matsumoto and John A. Nairn* ABSTRACT We measured the fracture toughness of MDF panels with two different densities by using crack propagation experiments and energy-based fracture mechanics. The two challenges were to identify the energy

  9. Cycling firing method for bypass operation of bridge converters

    DOE Patents [OSTI]

    Zabar, Zivan (99-72 66th Rd., Apt. 9N, Forest Hills, NY 11375)

    1982-01-01

    The bridge converter comprises a number of switching elements and an electronic logic system which regulated the electric power levels by controlling the firing, i.e., the initiation of the conduction period of the switching elements. Cyclic firing of said elements allows the direct current to bypass the alternating current system with high power factor and negligible losses.

  10. SEISMIC DESIGN PROVISIONS -THE CANADIAN HIGHWAY BRIDGE DESIGN CODE

    E-Print Network [OSTI]

    Bruneau, Michel

    in the 1994 American Association of State Highway and Transportation Officials Load and Resistance Factor Code in the 1994 American Association of State Highway and Transportation Officials Load and Resistance Factor CodeSEISMIC DESIGN PROVISIONS - THE CANADIAN HIGHWAY BRIDGE DESIGN CODE Denis MITCHELL Mc

  11. The bump at the end of the bridge: an investigation 

    E-Print Network [OSTI]

    Seo, Jeong Bok

    2005-02-17

    for 18 Houston sites were conducted. Based on the results, two bridge sites in Houston, Texas, were selected for detailed investigation. An extensive series of laboratory and field tests were performed at each site. The main causes of bump at two study...

  12. Inspection of Historic Steel Bridges Using Ultrasonic Phased Array 

    E-Print Network [OSTI]

    Roldan Arcos, Alejandra L

    2014-01-16

    The use of ultrasonic phased array (UPA) technology for inspection of the trunnion bearing pin of the 100-year old Salmon Bay Bascule Bridge is the focus of this research. To thoroughly investigate the bearing pin, two main objectives are addressed...

  13. ASSESSMENT OF LIVESTOCK WINTERING AREAS IN BRIDGE CREEK BASIN, 1996

    E-Print Network [OSTI]

    of Agricultural Practice for Waste Management... 6 3.0 ASSESSMENT RESULTS................................... 7 3 with the environmental guidelines of the Ministry of Agriculture, Fisheries and Food (1992) and the Code of Agricultural Practice for Waste Management (Waste Management Act, Health Act, 1992). Bridge Creek drains a 1,550 km area

  14. A Theoretical Structural Impairment Detection System for Timber Railway Bridges 

    E-Print Network [OSTI]

    Orsak, John

    2012-07-16

    , finite element model created in LS-DYNA. Traversing axle loads were imposed on the models. The results obtained from the model were the wheel paths the axles take as they traverse the bridge. The paths were expressed as vertical displacements as a...

  15. PENNY--SHAPED CRACK BRIDGED BY N.V. Movchan,

    E-Print Network [OSTI]

    Bath, University of

    PENNY--SHAPED CRACK BRIDGED BY FIBRES N.V. Movchan, School of Mathematical Sciences, University and Theoretical Physics, Silver Street, Cambridge, CB3 9EW, U.K. Abstract An axi--symmetric problem for a penny traction distribution. In the present paper we deal only with the second step, namely we consider a penny

  16. DRAFT San Acacia Reach San Acacia Dam to Escondida Bridge

    E-Print Network [OSTI]

    Julien, Pierre Y.

    DRAFT San Acacia Reach San Acacia Dam to Escondida Bridge Hydraulic Modeling Analysis 1918, hydraulic modeling analyses have been performed on the San Acacia reach to determine the changes by Reclamation on the San Acacia reach. The 11.6 mile long extends from the San Acacia Diversion dam (River Mile

  17. San Acacia Reach San Acacia Dam to Escondida Bridge

    E-Print Network [OSTI]

    Julien, Pierre Y.

    San Acacia Reach San Acacia Dam to Escondida Bridge Hydraulic Modeling Analysis 1918-2006 Middle, hydraulic modeling analyses have been performed on the San Acacia reach to determine the changes by Reclamation on the San Acacia reach. The 11.6 mile long reach extends from the San Acacia Diversion dam (River

  18. HEADINGLEY "SMART" BRIDGE A NEW GENERATION OF CIVIL ENGINEERI[,;G

    E-Print Network [OSTI]

    HEADINGLEY "SMART" BRIDGE A NEW GENERATION OF CIVIL ENGINEERI[,;G STRUCTURES by Dr. Sami Rizkalla. INTRODUCTION The Province ofManitoba accepted the challenge to construCt the largest span bridge prestressed reinforced by glass fibre reinforced polymer (GFRP) reinforcements. The bridge is instrumented \\vith fibre

  19. LARGE TORSIONAL OSCILLATIONS IN A SUSPENSION BRIDGE: MULTIPLE PERIODIC SOLUTIONS TO A NONLINEAR

    E-Print Network [OSTI]

    Moore, Kristen

    of the Tacoma Narrows Bridge, we solve the damped equation numerically and observe that multiple periodic the dramatic and finally destructive torsional oscillations of the Tacoma Narrows Bridge that preceded its observed on the Tacoma Narrows and other suspension bridges. Theoretical and numerical evidence to support

  20. Improved Understanding of Bimodal Coupled Bridge Flutter Based on Closed-Form Solutions

    E-Print Network [OSTI]

    Chen, Xinzhong

    concerns in the design and construction of long span bridges. Since the collapse of the Tacoma NarrowsImproved Understanding of Bimodal Coupled Bridge Flutter Based on Closed-Form Solutions Xinzhong Chen1 Abstract: Analysis of an aeroelastic bridge system consisting of the fundamental vertical

  1. Resistive Bridge Fault Modeling,Simulationand Test Generation Vijay R. Sar-Dessai

    E-Print Network [OSTI]

    Walker, Duncan M. "Hank"

    Resistive Bridge Fault Modeling,Simulationand Test Generation Vijay R. Sar-Dessai Intel Corporation.sar-dessai@intel.com Abstract In this work' we develop models of resistive bridging faults and study thefault coverage on ISCAS85 circuits of different test sets using resistive and zero-ohm bridges at different supply voltages

  2. Bridge mediated two-electron transfer reactions: On the influence of intersite Coulomb interactions

    E-Print Network [OSTI]

    Röder, Beate

    Bridge mediated two-electron transfer reactions: On the influence of intersite Coulomb interactions 17 June 2004 Donor-acceptor two-electron transfer TET mediated by a linear molecular bridge of a strong electronic intersite coupling within the bridge and against the background of fast vibrational

  3. Building a Communication Bridge with Mobile Onur Tekdas, Yokesh Kumar, Volkan Isler, and Ravi Janardan

    E-Print Network [OSTI]

    Isler, Ibrahim Volkan

    Building a Communication Bridge with Mobile Hubs Onur Tekdas, Yokesh Kumar, Volkan Isler, and Ravi, USA Abstract. We study scenarios where mobile hubs are charged with building a communication bridge are minimizing the number of hubs on the bridge and either the maxi- mum or the total distance traveled

  4. Controlled Rocking System for Seismic Retrofit of Steel Truss Bridge Piers

    E-Print Network [OSTI]

    Bruneau, Michel

    1 Controlled Rocking System for Seismic Retrofit of Steel Truss Bridge Piers Michael Pollino1 and Michel Bruneau2 ABSTRACT In assessments of the seismic adequacy of existing steel bridges, the steel, especially for bridges deemed critical for response and recovery efforts following an earthquake. While

  5. An Adaptation of ProofPlanning to Declarer Play in Bridge ?

    E-Print Network [OSTI]

    Basin, David

    An Adaptation of Proof­Planning to Declarer Play in Bridge ? Ian Frank David Basin Alan Bundy Department of Artificial Intelligence University of Edinburgh 80 South Bridge Edinburgh EH1 1HN Scotland Abstract. We present Finesse, a system that forms optimal plans for declarer play in the game of Bridge

  6. An FPGA Bridge Preserving Traffic Quality of Service for On-Chip Network-Based Systems

    E-Print Network [OSTI]

    An FPGA Bridge Preserving Traffic Quality of Service for On-Chip Network-Based Systems Ashkan with their own NoC, and each of which is implemented on a separate FPGA board. Multiple SoC ASICs can be bridged the required quality of service (QoS). In this paper, we investigate bridging schemes at different levels

  7. 1. INTRODUCTION Bridge engineering is not only about designing but also includes "looking after" and maintain-

    E-Print Network [OSTI]

    1. INTRODUCTION Bridge engineering is not only about designing but also includes "looking after" and maintain- ing the service-life of bridges. In the UK, after a period of relative neglect in the 1970s there was a growing awareness of the necessity to safeguard and maintain the stock of bridges as part of the national

  8. The Brownian Bridge Asymptotics in the Subcritical Phase of Bernoulli Bond Percolation Model.

    E-Print Network [OSTI]

    Kovchegov, Yevgeniy

    The Brownian Bridge Asymptotics in the Subcritical Phase of Bernoulli Bond Percolation Model)-dimensional Brownian bridge. 1 1 Introduction. In this paper we describe the limiting structure of a bond presented in [9] and [11]. We will also recall the definition of Brownian bridge. The result

  9. SHIFT INVARIANCE OF THE OCCUPATION TIME OF THE BROWNIAN BRIDGE PROCESS

    E-Print Network [OSTI]

    Howard, Peter

    SHIFT INVARIANCE OF THE OCCUPATION TIME OF THE BROWNIAN BRIDGE PROCESS Peter Howard and Kevin of a one-dimensional Brownian bridge process on any Lebesgue measurable set between the initial and nal states of the bridge is shown to be invariant under translation and re ection, so long as the translation

  10. Bridge--The New Blackwell Compaion to the City Gentrification of the City

    E-Print Network [OSTI]

    M Bridge--The New Blackwell Compaion to the City Chapter 50 Gentrification of the City Tom Slater, The New Blackwell Companion to the City Edited by Gary Bridge and Sophie Watson © 2011 Blackwell Publishing Ltd c50.indd 571 11/5/2010 8:49:43 PM #12;M Bridge--The New Blackwell Compaion to the City 572 Tom

  11. Analysis of Long Span Bridge Response to Winds: Building Nexus between Flutter and Buffeting

    E-Print Network [OSTI]

    Chen, Xinzhong

    Analysis of Long Span Bridge Response to Winds: Building Nexus between Flutter and Buffeting Xinzhong Chen1 Abstract: In current bridge aeroelastic analysis frameworks, predictions of flutter the self-excited forces influence bridge dynamics, especially the modal damping, and eventually drive

  12. Resistive Bridge Fault Model Evolution From Conventional to Ultra Deep Submicron Technologies

    E-Print Network [OSTI]

    Polian, Ilia

    Resistive Bridge Fault Model Evolution From Conventional to Ultra Deep Submicron Technologies Ilia three resistive bridging fault models valid for dif- ferent CMOS technologies. The models. The second model is obtained by fitting SPICE data. The third resistive bridging fault model uses Berkeley

  13. Bridge Damage and Repair Costs from Hurricane Katrina Jamie Padgett1

    E-Print Network [OSTI]

    Padgett, Jamie Ellen

    Bridge Damage and Repair Costs from Hurricane Katrina Jamie Padgett1 ; Reginald DesRoches2 ; Bryant to repair or replace the bridges damaged during the hurricane is estimated at over $1 billion. This paper describes the observed damage patterns to bridges, including damage attributed to storm surge, wind, impact

  14. Role of the Salt-bridge between Switch-1 and Switch-2 of Dictyostelium Myosin

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    Role of the Salt-bridge between Switch-1 and Switch-2 of Dictyostelium Myosin Marcus Furch1-phosphate. The closed form seems to be necessary for hydrolysis and is stabilised by the formation of a salt-bridge between an arginine residue in N2 and a glutamate residue in N3. We examined the role of this salt-bridge

  15. Progress In Electromagnetics Research, PIER 97, 343356, 2009 EMPIRICAL FORMULATION OF BRIDGE INDUC-

    E-Print Network [OSTI]

    Akin, Tayfun

    Progress In Electromagnetics Research, PIER 97, 343­356, 2009 EMPIRICAL FORMULATION OF BRIDGE INDUC Ankara, Turkey Abstract--This paper presents a substrate independent empirical formulation for the bridge and meanders to the bridges, allowing the tuning of the isolation band of the switch from the X-band to the mm

  16. The Azine Bridge as a Conjugation Stopper: An NMR Spectroscopic Study of Electron Delocalization in Acetophenone

    E-Print Network [OSTI]

    Lewis, Michael

    The Azine Bridge as a Conjugation Stopper: An NMR Spectroscopic Study of Electron Delocalization that the azine bridge is a conjugation stopper. This hypothesis has now been tested in detail, and 1 H and 13 C bridge largely inhibits through-conjugation in molecules with the general structure DPh

  17. Effective bridge spectral density for long-range biological energy and charge transfer

    E-Print Network [OSTI]

    Mukamel, Shaul

    Effective bridge spectral density for long-range biological energy and charge transfer Oliver Ku of intermediate bridge sites in energy and charge transfer processes in molecular aggregates of arbitrary size analysis for a donor­acceptor system coupled through a single bridge molecule are presented. © 1996

  18. 2014-2016 BRIDGE TO THE DOCTORATE APPLICATION FORM UNIVERSITY OF MARYLAND, COLLEGE PARK

    E-Print Network [OSTI]

    Gruner, Daniel S.

    2014-2016 BRIDGE TO THE DOCTORATE APPLICATION FORM UNIVERSITY OF MARYLAND, COLLEGE PARK Alliances for Minority Participation (LSAMP) Bridge to the Doctorate program. The BD program seeks. The Bridge to the Doctorate Program can assist you in this endeavor by providing financial and academic

  19. The SL(2, C) Casson invariant for Dehn surgeries on two-bridge knots

    E-Print Network [OSTI]

    Boden, Hans U.

    The SL(2, C) Casson invariant for Dehn surgeries on two-bridge knots HANS U. BODEN CYNTHIA L surgery along two-bridge knots. Using the results of Hatcher and Thurston, and also results of Ohtsuki, we on a hyperbolic two-bridge knot. We relate the formulas derived to degrees of A- polynomials and use

  20. Bridge mediated two-electron transfer reactions: Analysis of stepwise and concerted pathways

    E-Print Network [OSTI]

    Röder, Beate

    Bridge mediated two-electron transfer reactions: Analysis of stepwise and concerted pathways E. G-electron transfer TET mediated by a single regular bridge (B) is developed. The presence of different intermediate-exponential kinetics becomes possible. For the latter case the rate KTET is calculated, which describes the bridge

  1. 2015 Bioenergy Summer Bridge Fellowship Applica;on Please type or print all informa0on

    E-Print Network [OSTI]

    Tullos, Desiree

    2015 Bioenergy Summer Bridge Fellowship Applica;on Please type or print all community; · Why you want to be a Bioenergy Summer Bridge student and what you will become a role model for future Bioenergy Summer Bridge students. Le=er B

  2. A Vervaat-like path transformation for the re ected Brownian bridge

    E-Print Network [OSTI]

    Henri Poincaré -Nancy-Université, Université

    A Vervaat-like path transformation for the re ected Brownian bridge conditioned on its local time transformation for the re ected Brownian bridge conditioned on its local time at 0: up to random shifts, this process equals the two processes constructed from a Brownian bridge and a Brownian excursion by adding

  3. TRANSLATIONAL BRIDGE PROGRAM FUND Fostering Translational Collaborations between Basic Scientists and Clinicians

    E-Print Network [OSTI]

    Chisholm, Rex L.

    TRANSLATIONAL BRIDGE PROGRAM FUND Fostering Translational Collaborations between Basic Scientists- impact research efforts. We are launching the Bridge Program to blaze a new path not only for oncology sciences and clinical medicine. We are seeking philanthropic support to create a dedicated Bridge Program

  4. SHIFT INVARIANCE OF THE OCCUPATION TIME OF THE BROWNIAN BRIDGE PROCESS

    E-Print Network [OSTI]

    Zumbrun, Kevin

    SHIFT INVARIANCE OF THE OCCUPATION TIME OF THE BROWNIAN BRIDGE PROCESS Peter Howard and Kevin time of a one­dimensional Brownian bridge process on any Lebesgue measurable set between the initial and final states of the bridge is shown to be invariant under translation and reflection, so long

  5. CAMPARE and Cal-Bridge: Promo5ng Astronomy & Physics for

    E-Print Network [OSTI]

    Rudolph, Alexander L.

    CAMPARE and Cal-Bridge: Promo5ng Astronomy & Physics for Underrepresented Colloquium UC Berkeley October 16, 2014 #12;Why CAMPARE and Cal-Bridge? · "Li% United States Hispanic 17% 31% #12;Why CAMPARE and Cal-Bridge? · "LiQle progress has been

  6. Smart Control of a Geothermally Heated Bridge Deck Stephen C. Jenks (o) 580-767-4374

    E-Print Network [OSTI]

    " control system designed for a geothermal bridge deck heating system. The control system integrates acceptable, and environmentally compatible Smart Bridge systems to enhance the nation's highway system safetyJenks 1 Smart Control of a Geothermally Heated Bridge Deck Stephen C. Jenks (o) 580-767-4374 Conoco

  7. Dialkylenecarbonate-Bridged Polysilsesquioxanes. Hybrid Organic-Inorganic Sol-Gels with a Thermally Labile Bridging Group

    SciTech Connect (OSTI)

    Assink, Roger A.; Baugher, Brigitta M.; Beach, James V.; Loy, Douglas A.; Shea, Kenneth J.; Small, James H.; Tran, Joseph

    1999-07-20

    In this paper, we introduce a new approach for altering the properties of bridged polysilsesquioxane xerogels using post-processing mobilization of the polymeric network. The bridging organic group contains latent functionalities that can be liberated thermally, photochemically, or by chemical means after the gel has been processed to a xerogel. These modifications can produce changes in density, volubility, porosity, and or chemical properties of the material. Since every monomer possesses two latent functional groups, the technique allows for the introduction of high levels of functionality in hybrid organic-inorganic materials. Dialkylenecarbonate-bridged polysilsesquioxane gels were prepared by the sol-gel polymerization of bis(triethoxysilylpropyl)carbonate (1) and bis(triethoxysilylisobutyl)-carbonate (2). Thermal treatment of the resulting non-porous xerogels and aerogels at 300-350 C resulted in quantitative decarboxylation of the dialkylenecarbonate bridging groups to give new hydroxyalkyl and olefinic substituted polysilsesquioxane monolithic xerogels and aerogels that can not be directly prepared through direct sol-gel polymerization of organotrialkoxysilanes.

  8. Building Bridges: IT and Audio | Shure Blog http://blog.shure.com/shure-notes/building-bridges-it-and-audio/[9/24/2014 11:33:57 AM

    E-Print Network [OSTI]

    Huang, Jianyu

    Building Bridges: IT and Audio | Shure Blog http://blog.shure.com/shure-notes/building-bridges-it-and-audio/[9/24/2014 11:33:57 AM] News Shure Notes Mic CheckBLOG Recent Posts 5 Things To Know A 09 | Shure Blog http://blog.shure.com/shure-notes/building-bridges-it-and-audio/[9/24/2014 11:33:57 AM

  9. Development and testing of a low-maintenance, energy-absorbing bridge rail 

    E-Print Network [OSTI]

    Cain, John Craig

    1985-01-01

    vehicle leaves the flow of traffic and strikes a bridge rail. The second concern is for the safety of the maintenance workers who must repair bridge rail damage following a collision. Third, the increasing cost of maintaining br idge decks and rails... during a more severe collision. Furthermore, the new bridge rail is designed to fit either new or existing standard bridge decks. Following development of the new bridge rail, two full-scale vehicle crash-tests were performed at the TTI Research...

  10. Method of controlling switching of a multiphase inductor-converter bridge

    DOE Patents [OSTI]

    Kustom, Robert L. (Palos Heights, IL); Fuja, Raymond E. (Justice, IL)

    1981-01-01

    In an inductor-convertor circuit for transferring electrical energy between a storage coil and a load coil using a storage thyristor bridge, a load thyristor bridge, and a set of commutating capacitors, operation is improved by a method of changing the rate of delivery of energy in a given direction. The change in rate corresponds to a predetermined change in phase angle between the load bridge and the storage bridge and comprises changing the phase of the bridge by two steps, each equal to half the predetermined change and occurring 180.degree. apart. The method assures commutation and minimizes imbalances that lead otherwise to overvoltages.

  11. Tungsten bridge for the low energy ignition of explosive and energetic materials

    DOE Patents [OSTI]

    Benson, D.A.; Bickes, R.W. Jr.; Blewer, R.S.

    1990-12-11

    A tungsten bridge device for the low energy ignition of explosive and energetic materials is disclosed. The device is fabricated on a silicon-on-sapphire substrate which has an insulating bridge element defined therein using standard integrated circuit fabrication techniques. Then, a thin layer of tungsten is selectively deposited on the silicon bridge layer using chemical vapor deposition techniques. Finally, conductive lands are deposited on each end of the tungsten bridge layer to form the device. It has been found that this device exhibits substantially shorter ignition times than standard metal bridges and foil igniting devices. In addition, substantially less energy is required to cause ignition of the tungsten bridge device of the present invention than is required for common metal bridges and foil devices used for the same purpose. 2 figs.

  12. Tungsten bridge for the low energy ignition of explosive and energetic materials

    DOE Patents [OSTI]

    Benson, David A. (Albuquerque, NM); Bickes, Jr., Robert W. (Albuquerque, NM); Blewer, Robert S. (Albuquerque, NM)

    1990-01-01

    A tungsten bridge device for the low energy ignition of explosive and energetic materials is disclosed. The device is fabricated on a silicon-on-sapphire substrate which has an insulating bridge element defined therein using standard integrated circuit fabrication techniques. Then, a thin layer of tungsten is selectively deposited on the silicon bridge layer using chemical vapor deposition techniques. Finally, conductive lands are deposited on each end of the tungsten bridge layer to form the device. It has been found that this device exhibits substantially shorter ignition times than standard metal bridges and foil igniting devices. In addition, substantially less energy is required to cause ignition of the tungsten bridge device of the present invention than is required for common metal bridges and foil devices used for the same purpose.

  13. BYU Bridge is an online resource that connects BYU students to employers and allows users to search

    E-Print Network [OSTI]

    Hart, Gus

    BYU Bridge is an online resource that connects BYU students to employers and allows users to search. Login to bridge.byu.edu Tips for Using the Bridge Complete your profile Make sure your profile? Easy! To adjust these settings login to the Bridge, and click on the "Privacy Settings" link

  14. Solutions of burnt-bridge models for molecular motor transport Alexander Yu. Morozov, Ekaterina Pronina, and Anatoly B. Kolomeisky

    E-Print Network [OSTI]

    Solutions of burnt-bridge models for molecular motor transport Alexander Yu. Morozov, Ekaterina consecutive binding sites called "bridges" , is investigated theoretically by analyzing discrete-state stochastic "burnt-bridge" mod- els. When an unbiased diffusing particle crosses the bridge, the link can

  15. Multiple Liquid Bridges with Non-Smooth Interfaces

    E-Print Network [OSTI]

    Fel, Leonid; Ratner, Vadim

    2015-01-01

    We consider a coexistence of two axisymmetric liquid bridges LB_i and LB_m of two immiscible liquids i and m which are immersed in a third liquid (or gas) e and trapped between two smooth solid bodies with axisymmetric surfaces S_1,S_2 and free contact lines. Evolution of liquid bridges allows two different configurations of LB_i and LB_m with multiple (five or three) interfaces of non-smooth shape. We formulate a variational problem with volume constraints and present its governing equations supplemented by boundary conditions. We find a universal relationship between curvature of the interfaces and discuss the Young relation at the singular curve where all liquids meet together.

  16. Surface modification of low density silica and bridged polysilsesquioxane aerogels

    SciTech Connect (OSTI)

    DeFriend, K. A. (Kimberly A.); Loy, D. A. (Douglas A.); Salazar, K. V. (Kenneth V.); Wilson, K. V. (Kennard V.)

    2004-01-01

    Silica and bridged polysilsesquioxane aerogels are low density materials that are attractive for applications such as, thermal insulation, porous separation media or catalyst supports, adsorbents. However, aerogels are notoriously weak and brittle making it difficult to handle and machine monoliths into desired forms. This prevents the development of many applications that would otherwise benefit from the use of the low density materials. We will describe our efforts to chemically modify and mechanically enhance silica-based aerogels using chemical vapor techniques without sacrificing their characteristic low densities. Monolithic silica and organically bridged polysilsesquioxane aerogels were prepared by sol-gel polymerization of the respective methoxysilane monomers followed by supercritical carbon dioxide drying of the gels. Reactive modification of the gels with volatile silylating compounds during and after the drying process and these effects on the mechanical properties and density of the aerogels will be described.

  17. Bridged polysilsesquioxane-polydimethylsiloxane nanocomposites: A reactivity study

    SciTech Connect (OSTI)

    Ulibarri, T.A.; Loy, D.A. [Sandia National Laboratories, Albuquerque, NM (United States); Bates, S.E.; Black, E.P.; Jamison, G.M. [Univ. of California, Irvine, CA (United States)] [and others

    1996-10-01

    It has been demonstrated that increased strength and extensibility can be obtained in polydimethylsiloxane (PDMS) systems through the use of bimodal polymer distributions. In order to further probe short chain and linkage effects in bimodal polymer networks, we are interested in a new class of nanocomposites based on hydroxy-terminated PDMS as the long chain segments and alkylene- or arylene-bridged silsesquioxanes as the short chain segments. We have investigated tin-catalyzed coupling of the terminal hydroxy groups of the PDMS segments with bis(triethoxysilyl)arylene and alkylene monomers. The compatibility of the different silsesquioxane monomers with PDMS, and their activity with the tin-based catalyst, has been explored. A number of different hydrocarbon bridged silsesquioxane monomers have been used to determine the effect that the short segment flexibility and length, and the degree of crosslinking have on the final material properties. Findings from this study will be reported.

  18. Gravity's Rainbow: a bridge towards Horava-Lifshitz gravity

    E-Print Network [OSTI]

    Remo Garattini; Emmanuel N. Saridakis

    2014-11-25

    We investigate the connection between Gravity's Rainbow and Horava-Lifshitz gravity, since both theories incorporate a modification in the UltraViolet regime which improves their quantum behavior at the cost of the Lorentz invariance loss. In particular, extracting the Wheeler-De Witt equations of the two theories in the case of Friedmann-Lemaitre-Robertson-Walker and spherically symmetric geometries, we establish a correspondence that bridges them.

  19. Variability of modal parameters measured on the Alamosa Canyon Bridge

    SciTech Connect (OSTI)

    Farrar, C.R.; Doebling, S.W. [Los Alamos National Lab., NM (United States); Cornwell, P.J.; Straser, E.G. [Stanford Univ., CA (United States). J.A. Blume Earthquake Engineering Center

    1996-12-31

    A significant amount of work has been reported in technical literature regarding the use of changes in modal parameters to identify the location and extent of damage in structures. Curiously absent, and critically important to the practical implementation of this work, is an accurate characterization of the natural variability of these modal parameters caused by effects other than damage. To examine this issue, a two-lane, seven-span, composite slab-on-girder bridge near the town of Truth or Consequences in southern New Mexico was tested several times over a period of nine months. Environmental effects common to this location that could potentially produce changes in the measured modal properties include changes in temperature, high winds, and changes to the supporting soil medium. In addition to environmental effects, variabilities in modal testing procedures and data reduction can also cause changes in the identified dynamic properties of the structure. In this paper the natural variability of the frequencies and mode shapes of the Alamosa Canyon bridge that result from changes in time of day when the test was performed, amount of traffic, and environmental conditions will be discussed. Because this bridge has not been in active use throughout the testing period, it is assumed that any change in the observed modal properties are the result of the factors listed above rather than deterioration of the structure itself.

  20. Radial motion into an Einstein-Rosen bridge

    E-Print Network [OSTI]

    Nikodem J. Poplawski

    2010-04-13

    We consider the radial geodesic motion of a massive particle into a black hole in isotropic coordinates, which represents the exterior region of an Einstein-Rosen bridge (wormhole). The particle enters the interior region, which is regular and physically equivalent to the asymptotically flat exterior of a white hole, and the particle's proper time extends to infinity. Since the radial motion into a wormhole after passing the event horizon is physically different from the motion into a Schwarzschild black hole, Einstein-Rosen and Schwarzschild black holes are different, physical realizations of general relativity. Yet for distant observers, both solutions are indistinguishable. We show that timelike geodesics in the field of a wormhole are complete because the expansion scalar in the Raychaudhuri equation has a discontinuity at the horizon, and because the Einstein-Rosen bridge is represented by the Kruskal diagram with Rindler's elliptic identification of the two antipodal future event horizons. These results suggest that observed astrophysical black holes may be Einstein-Rosen bridges, each with a new universe inside that formed simultaneously with the black hole. Accordingly, our own Universe may be the interior of a black hole existing inside another universe.

  1. Nonadiabatic ab initio molecular dynamics of photoisomerization in bridged azobenzene

    SciTech Connect (OSTI)

    Gao Aihua; Li Bin; Zhang Peiyu; Han Keli [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)

    2012-11-28

    The photoisomerization mechanisms of bridged azobenzene are investigated by means of surface hopping dynamics simulations based on the Zhu-Nakamura theory. In the geometry optimizations and potential energy surface calculations, four minimum-energy conical intersections between the ground state and the lowest excited state are found to play important roles in the trans-cis and cis-trans isomerization processes. The trans-cis photoisomerization proceeds through two minimum-energy conical intersections. Ultrafast pedal motion of the N atoms and twisting of phenyl rings around their N-C bonds allows the molecule to move to a minimum-energy conical intersection, after which surface hopping from S{sub 1} to S{sub 0} occurs. In the S{sub 0} state, further rotation occurs around the N=N bond and two N-C bonds until the azo moiety and phenyl rings complete their isomerization. Finally, the cis form is achieved by subsequent adjustment of the ethylene bridge. In the cis-trans photodynamics, there is one rotational pathway, in the middle of which two CIs are responsible for the surface hopping to the S{sub 0} state. After the nonadiabatic transition, the molecule reaches the trans form through a barrierless pathway and the two phenyl rings and the additional bridge complete their reorientation almost at the same time.

  2. Rizkalla, S., and Tadros, G., "FRP for Prestressing of Concrete Bridges in Canada,"Page 1 FRP for Prestressing of Concrete Bridges in Canada

    E-Print Network [OSTI]

    of Carbon Fiber Reinforced Polymer, CFRP, tendons and rods for prestressing concrete highway bridges 440, Fiber Reinforced Polymer. Keywords: Bridge, caron fibers, prestressing, concrete, safety Committee 440, Fiber Reinforced Polymer, member of the ACI-ASCE joint Committee 550, Precast Concrete

  3. The photospheric environment of a solar pore with light bridge

    E-Print Network [OSTI]

    S. Giordano; F. Berrilli; D. Del Moro; V. Penza

    2007-05-25

    Pores are one of the various features forming in the photosphere by the emergence of magnetic field onto the solar surface. They lie at the border between tiny magnetic elements and larger sunspots. Light bridges, in such structures, are bright features separating umbral areas in two or more irregular regions. Commonly, light bridges indicate that a the merging of magnetic regions or, conversely, the breakup of the area is underway. We investigate the velocity structure of a solar pore (AR10812) with light bridge, and of the quiet solar photosphere nearby, analyzing high spatial and spectral resolution images. The pore area has been observed with the Interferometric BI-dimensional Spectrometer (IBIS) at the Dunn Solar Telescope, acquiring monochromatic images in the Ca II 854.2 nm line and in the Fe I 709.0 nm line as well as G-band and broad-band images. We also computed the Line of Sight (LoS) velocity field associated to the Fe I and Fe II photospheric lines. The amplitude of the LoS velocity fluctuations, inside the pore, is smaller than that observed in the quiet granulation near the active region. We computed the azimuthal average LoS velocity and derived its radial profile. The whole pore is characterized by a downward velocity -200 m/s and by an annular downflow structure with an average velocity of -350 m/s with respect to the nearby quiet sun. The light bridge inside the pore, when observed in the broad-band channel of IBIS and in the red wing of Ca II 854.2 nm line, shows an elongated dark structure running along its axis, that we explain with a semi-analytical model. In the highest resolution LoS velocity images the light bridge shows a profile consistent with a convective roll: a weak upflow, 50-100m/s, in correspondence of the dark lane, flanked by a downflow, -(200-300) m/s.

  4. Quantum Dot–Bridge–Fullerene Heterodimers with Controlled Photoinduced Electron Transfer

    SciTech Connect (OSTI)

    Cotlet, M.; Xu, Z.

    2011-06-27

    A series of donor-bridge-acceptor systems in the form of core/shell CdSe/ZnS quantum dot-bridge-fullerene heterodimers (see picture) with varying bridge length and varying quantum dot size were self-assembled by a surface-based stepwise method to demonstrate control of the rate and of the magnitude of fluctuations of photoinduced electron transfer at the single-molecule level.

  5. THE CLASSIFICATION OF DEHN FILLINGS ON THE OUTER TORUS OF A 1-BRIDGE BRAID

    E-Print Network [OSTI]

    Wu, Ying-Qing

    THE CLASSIFICATION OF DEHN FILLINGS ON THE OUTER TORUS OF A 1-BRIDGE BRAID EXTERIOR WHICH PRODUCE SOLID TORI Ying-Qing Wu1 Abstract. Let K = K(w, b, t) be a 1-bridge braid in a solid torus V , and let for such Dehn fillings. 1. Introduction A knot K in a 3-manifold M is a 0-bridge knot if it is isotopic

  6. Analysis of alternatives for computing backwater at bridges for free-surface, subcritical flow conditions 

    E-Print Network [OSTI]

    Kaatz, Kelly Jay

    1993-01-01

    . (August 1993) Kelly Jay Kaatz, B. S. , Texas A&M University Chair of Advisory Committee: Dr. Wesley P. James The performance and reliability of four of the more popular methods for one- dimensional flow analysis of bridges were investigated. These four... methods were the HEC-2 Normal Bridge Method, HEC-2 Special Bridge Method, WSPRO, and Modified Bradley Method. The study was based on models of 13 flood events at nine different bridge sites in the southeastern United States. The sites were located...

  7. Hydrogen loaded metal for bridge-foils for enhanced electric gun/slapper detonator operation

    DOE Patents [OSTI]

    Osher, John E. (Alamo, CA)

    1992-01-01

    The invention provides a more efficient electric gun or slapper detonator ich provides a higher velocity flyer by using a bridge foil made of a hydrogen loaded metal.

  8. Implementing peer review at an emergency medicine blog: bridging the gap between educators and clinical experts.

    E-Print Network [OSTI]

    Thoma, B; Chan, T; Desouza, N; Lin, M

    2014-01-01

    implemented on the ALiEM blog in an effort to enhance theat an emergency medicine blog: bridging the gap betweenestablished academic medical blog. Experts provided either

  9. Implementing peer review at an emergency medicine blog: Bridging the gap between educators and clinical experts

    E-Print Network [OSTI]

    2015-01-01

    at an emergency medicine blog: bridging the gap betweenestablished academic medical blog. Experts provided eitherreviews that were visible to blog readers. This article

  10. Numerical and Experimental Investigation of Bridges with Columns Supported on Rocking Foundations

    E-Print Network [OSTI]

    Antonellis, Grigorios

    2015-01-01

    and Kutter, B. L. (2012). “Centrifuge testing of rockingfoundations using centrifuge model tests. ” Earthquakeand Kunnath, S. K. (2012a). “Centrifuge modeling of bridge

  11. Union Bridge, Maryland: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York: EnergyU.S.Unifin Jump to: navigation,Union Bridge,

  12. Long-Term Damped Dynamics of the Extensible Suspension Bridge

    E-Print Network [OSTI]

    Ivana Bochicchio; Claudio Giorgi; Elena Vuk

    2011-02-04

    This work is focused on the doubly nonlinear equation, whose solutions represent the bending motion of an extensible, elastic bridge suspended by continuously distributed cables which are flexible and elastic with stiffness k^2. When the ends are pinned, long-term dynamics is scrutinized for arbitrary values of axial load p and stiffness k^2. For a general external source f, we prove the existence of bounded absorbing sets.When f is timeindependent, the related semigroup of solutions is shown to possess the global attractor of optimal regularity and its characterization is given in terms of the steady states of the problem.

  13. Protein Bridges DNA Base and Nucleotide Excision Repair Pathways

    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 wouldMass mapSpeedingProgramExemptions |(Conference)ProjectProposedAmerica'sTrapProtein Bridges

  14. High Bridge, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea, CaliforniaHess Retail NaturalAreasHigh Bridge,

  15. Dynamic Properties of Molecular Motors in Burnt-Bridge Models

    E-Print Network [OSTI]

    Maxim N. Artyomov; Alexander Yu. Morozov; Ekaterina Pronina; Anatoly B. Kolomeisky

    2007-05-04

    Dynamic properties of molecular motors that fuel their motion by actively interacting with underlying molecular tracks are studied theoretically via discrete-state stochastic ``burnt-bridge'' models. The transport of the particles is viewed as an effective diffusion along one-dimensional lattices with periodically distributed weak links. When an unbiased random walker passes the weak link it can be destroyed (``burned'') with probability p, providing a bias in the motion of the molecular motor. A new theoretical approach that allows one to calculate exactly all dynamic properties of motor proteins, such as velocity and dispersion, at general conditions is presented. It is found that dispersion is a decreasing function of the concentration of bridges, while the dependence of dispersion on the burning probability is more complex. Our calculations also show a gap in dispersion for very low concentrations of weak links which indicates a dynamic phase transition between unbiased and biased diffusion regimes. Theoretical findings are supported by Monte Carlo computer simulations.

  16. Silylation of low-density silica and bridged polysilsesquioxane aerogels

    SciTech Connect (OSTI)

    DeFriend, K. A. (Kimberly A.); Loy, D. A. (Douglas A.); Salazar, K. V. (Kenneth V.); Wilson, K. V. (Kennard V.)

    2004-01-01

    Silica and bridged polysilsesquioxane aerogels are low-density materials that are attractive for applications such as thermal insulation, porous separation media or catalyst supports, adsorbents, and cometary dust capture agents. However, aerogels are notoriously weak and brittle making it difficult to handle and machine monoliths into desired forms. This complication prevents the development of many applications that would otherwise benefit from the use of the low-density materials. Here, we will describe our efforts to chemically modify and mechanically enhance silica-based aerogels using chemical vapor techniques without sacrificing their characteristic low densities. Monolithic silica and organic-bridged polysilsesquioxane aerogels were prepared by sol-gel polymerization of the respective methoxysilane monomers followed by supercritical carbon dioxide drying of the gels. Then the gels were reactively modified with silylating agents to demonstrate the viability of CVD modification of aerogels, and to determine the effects of silylation of surface silanols on the morphology, surface area, and mechanical properties of the resulting aerogels.

  17. Carbon paint anode for reinforced concrete bridges in coastal environments

    SciTech Connect (OSTI)

    Cramer, Stephen D.; Bullard, Sophie J.; Covino, Bernard S., Jr.; Holcomb, Gordon R.; Russell, James H.; Cryer, C.B.; Laylor, H.M.

    2002-01-01

    Solvent-based acrylic carbon paint anodes were installed on the north approach spans of the Yaquina Bay Bridge (Newport OR) in 1985. The anodes continue to perform satisfactorily after more than 15 years service. The anodes were inexpensive to apply and field repairs are easily made. Depolarization potentials are consistently above 100 mV with long-term current densities around 2 mA/m 2. Bond strength remains adequate, averaging 0.50 MPa (73 psi). Some deterioration of the anode-concrete interface has occurred in the form of cracks and about 4% of the bond strength measurements indicated low or no bond. Carbon anode consumption appears low. The dominant long-term anode reaction appears to be chlorine evolution, which results in limited further acidification of the anode-concrete interface. Chloride profiles were depressed compared to some other coastal bridges suggesting chloride extraction by the CP system. Further evidence of outward chloride migration was a flat chloride profile between the anode and the outer rebar.

  18. A mix-use design proposal of the Martin Luther King bridge : a study of the use of a bridge in a historic St. Louis riverfront

    E-Print Network [OSTI]

    Miguel, Jesse Kadekawa

    1986-01-01

    This thesis is a exercise in a design proposal on the levee of the Mississippi spanned by a 1950's steel bridge in a historic St. Louis district known as Laclede's Landing. My intentions are to introduce a connection between ...

  19. Structurally Integrated Fiber Optic Strain Sensing Prestressing Tendons within a New Road Bridge

    E-Print Network [OSTI]

    Bridge CANCOM/93 of Composite R. M. Measures, T. Alavie, R. Maaskant, M.Ohn, S. Karr, S. Huang, D FIBER OPTIC SMART STRUCTURES LABORATORY 4925 Dufterin St., Downsview, Ontario, CANADA * City of Calgary interference than electrical based sensors. Many civil engineering structures like: bridges, dams, tunnels

  20. FIBER OPTIC SENSING OF A CARBON FIBER PRESfRESSED CONCRETE HIGHWAY BRIDGE

    E-Print Network [OSTI]

    FIBER OPTIC SENSING OF A CARBON FIBER PRESfRESSED CONCRETE HIGHWAY BRIDGE R. M. Measuresl , T. Rizkalla5 1Fiber Optic Smart Structures Lab: UTlAS, 4925 Dufferin St., Downsview, Ontario, CANADA 2 Con ofsteel within large concrete structures, such as bridges are leading to consideration ofcarbonfiber based

  1. Lateral Expansion of the Bridges of Cygnus A and other Powerful Radio Sources

    E-Print Network [OSTI]

    Greg F. Wellman; Ruth A. Daly

    1995-07-25

    Measurements of the width of the radio bridge at several locations along the bridge for each of four powerful extended radio sources are presented. Adopting a few simple assumptions, these measurements may be used to predict the radio surface brightness as a function of position across the radio bridge. The predicted and observed surface brightnesses across the bridges are compared and found to agree fairly well. The results are consistent with a simple picture in which the radio power and size of the radio lobe at the forward edge of the radio bridge are roughly time-independent for a given source, and the expansion of the bridge in the lateral direction is adiabatic. There is no indication that reacceleration or energy transport is important in the bridges of these sources. The rate of lateral expansion of the bridge just behind the radio lobe and hotspot in terms of the rate of forward propagation is compared with that predicted, and found to be in good agreement with the predicted value.

  2. Monte Carlo simulation of liquid bridge rupture: Application to lung physiology Adriano M. Alencar,1

    E-Print Network [OSTI]

    Alencar, Adriano Mesquita

    Monte Carlo simulation of liquid bridge rupture: Application to lung physiology Adriano M. Alencar of certain lung diseases, the surface properties and the amount of fluids coating the airways changes of similar bridges that exist in diseased lungs. DOI: 10.1103/PhysRevE.74.026311 PACS number s : 47.90 a, 04

  3. Cell-Bridge-Based Connection of High Density Sensor Elements Akimasa Okada

    E-Print Network [OSTI]

    Shinoda, Hiroyuki

    , and waste the power for communication. In this paper, we propose a novel network system named "cell bridge a similar goal, "Two-Dimensional Signal Transmission"[3] is studied. This technology realizes the flexible , and Hiroyuki Shinoda In this paper, we propose a novel network system named "cell bridge system" for a high

  4. Development of a Geographic Information System for traditional bridges of Central Zagori

    E-Print Network [OSTI]

    Psarrakos, Panayiotis

    Development of a Geographic Information System for traditional bridges of Central Zagori K contained in the system includes: exact position, access instructions, historic information, photographs of bridges and the types of relevant information are concerned. In its final form, the system

  5. Bridging the Mobile Web and the Web of Things in Urban Environments

    E-Print Network [OSTI]

    Bridging the Mobile Web and the Web of Things in Urban Environments Andreas Kamilaris, Nicolas- nectivity and the promising practice of Web-enabling physical devices create the need for a bridging between the Mobile Web and the Web of Things in urban environments. We believe that location would be the key element

  6. Assessment of grouts for constructability and durability of post-tensioned bridges 

    E-Print Network [OSTI]

    Kataria, Suresh

    2010-01-16

    Post-tensioned (PT) bridge technology was first introduced in France in the 1930?s as described in the post-tensioned concrete bridges: Anglo-French liaison report by Highway Agency and is widely used in Europe and the US. ...

  7. Comparison of experimental and analytical methods to evaluate thermal bridges in wall systems

    SciTech Connect (OSTI)

    Desjarlais, A.O. [Oak Ridge National Lab., TN (United States). Energy Div.; McGowan, A.G. [Enermodal Engineering Ltd., Kitchener, Ontario (Canada)

    1997-03-01

    Twelve ASTM C0236 guarded hot box experiments have been performed on wall systems containing a variety of thermal bridges. All of the wall systems included steel framing. Six walls also had a concrete block wall system and a concrete slab to simulate a wall/floor intersection. Thermal bridges included in the wall systems included steel studs, steel tracks, steel stud/track joints, fasteners (steel framing system), concrete slab, metal bolts and angle iron, and brick ties (concrete block wall). Two-dimensional finite difference modeling was also employed to characterize the wall systems. The experimental test data was used to tune and ultimately validate the computer simulation model. The average variation between the tested and simulated wall system R-Values was 3.3% and ranged from {minus}3.4 to +7.4%. The model was then used to determine the thermal impact of each individual thermal bridge. Beside the standard complement of temperature sensors that are traditionally used for these laboratory experiments, additional sensors were installed near each thermal bridge to define the area and magnitude of the thermal distortion caused by the thermal bridge. These thermal bridges were analytically simulated and the additional heat flux due to each thermal bridge was computed. This paper summarizes the experimental and analytical analyses used to characterize the wall systems and concentrate on the thermal impact each type of thermal bridge has on the overall performance of the wall systems.

  8. “Safe and Sound” – An Accelerated Bridge Improvement Program in Missouri – A Case Study

    E-Print Network [OSTI]

    Sutaria, Chintan P.

    2012-05-11

    as design consultants provided MoDOT with a way to replace 554 of Missouri’s ailing bridges at an accelerated pace. The complexity resulted from 554 scattered bridge sites in ten different MoDOT districts (then existing) with distinct hydraulic, geotechnical...

  9. BEHAVIOR OF CONCRETE BRIDGE DECKS REINFORCED WITH HIGH-STRENGTH AND HIGH CORROSION-RESISTANT STEEL

    E-Print Network [OSTI]

    presented. The paper assesses also the effect of bending of MMFX steel bars on its tensile strength. PHASE I_rizkalla@ncsu.edu ABSTRACT This paper describes the behavior of typical bridge deck slabs reinforced with high- strength other parameters related to the use of MMFX steel for bridge decks. The paper also presents the effect

  10. 11-level Cascaded H-bridge Grid-tied Inverter Interface with Solar Panels

    E-Print Network [OSTI]

    Tolbert, Leon M.

    11-level Cascaded H-bridge Grid-tied Inverter Interface with Solar Panels Faete Filho, Yue Cao multilevel DC-AC grid-tied inverter. Each inverter bridge is connected to a 200 W solar panel. OPAL-RT lab match. A novel SPWM scheme is proposed in this paper to be used with the solar panels that can account

  11. Three-dimensional terminally attached self-avoiding walks and bridges

    E-Print Network [OSTI]

    Nathan Clisby; Andrew R. Conway; Anthony J. Guttmann

    2015-07-24

    We study terminally attached self-avoiding walks and bridges on the simple cubic lattice, both by series analysis and Monte Carlo methods. We provide strong numerical evidence supporting a scaling relation between self-avoiding walks, bridges, and terminally attached self-avoiding walks, and posit that a corresponding amplitude ratio is a universal quantity.

  12. First Smart Highway Bridge in Canada S. H. RizkaIla and G. Tadros

    E-Print Network [OSTI]

    First Smart Highway Bridge in Canada by S. H. RizkaIla and G. Tadros The Beddington Trail in the private sector, government and universities: · The City of Calgary (Chris Wade, P.Eng. and Amit Guha fiber composite cables, CFCC, 5/8" FIRST SMART HIGHWAY BRIDGE IN CANADA Ri::Jwlla & Tadros. 1994 PAGE I

  13. Life Cycle Management of Steel Bridges Based on NDE and Failure Analysis

    E-Print Network [OSTI]

    INTEGRITY ASSESSMENT OF PIN AND HANGER CONNECTION OF AGING HIGHWAY BRIDGES USING FINITE ELEMENT ANALYSIS CONNECTION OF AGING HIGHWAY BRIDGES USING FINITE ELEMENT ANALYSIS David Houcque The finite element method of the entire structure is dependent on the behavior of cracks. Due to the accessibility of 3D finite element

  14. GHZ ELECTRICAL PROPERTIES OF CARBON NANOTUBES ON SILICON DIOXIDE MICRO BRIDGES

    E-Print Network [OSTI]

    Tang, William C

    1 GHZ ELECTRICAL PROPERTIES OF CARBON NANOTUBES ON SILICON DIOXIDE MICRO BRIDGES SHENG F. YEN1 of an approach to reduce the high-frequency capacitive feedthrough and dielectric leakages of carbon nanotubes grown on silicon dioxide micro bridges suspended over silicon substrates. The microwave reflection

  15. Chemical bridges for enhancing hydrogen storage by spillover and methods for forming the same

    DOE Patents [OSTI]

    Yang, Ralph T.; Li, Yingwei; Qi, Gongshin; Lachawiec, Jr., Anthony J.

    2012-12-25

    A composition for hydrogen storage includes a source of hydrogen atoms, a receptor, and a chemical bridge formed between the source and the receptor. The chemical bridge is formed from a precursor material. The receptor is adapted to receive hydrogen spillover from the source.

  16. Live load effects in diaphragms of concrete slab-on-steel girder highway bridges 

    E-Print Network [OSTI]

    Saindon, Kenneth Carl

    1994-01-01

    of diaphragm member forces under vehicle live load for both the strength and fatigue limit states. These forces are shown to vary significantly among bridges with different diaphragm-deck stiffness ratios and 0 values, where 8 is a property based upon bridge...

  17. Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers

    E-Print Network [OSTI]

    Bruneau, Michel

    Bidirectional Seismic Behavior of Controlled Rocking Four-Legged Bridge Steel Truss Piers Michael rocking bridge steel truss piers to three components of seismic excitation are presented in this paper. The controlled rocking approach for seismic protection allows a pier to uplift from its base, limiting the force

  18. Bridging faults in CMOS circuits which are non-Iddq testable and their effect on delay testing 

    E-Print Network [OSTI]

    Tu, Gao

    1997-01-01

    Bridging defects which occur in CMOS complementary gates (rather than ratioed logic gates) are investigated. Realistic bridging defects are shown to exist which are non-Iddq testable, but which can be deterministically tested using at speed voltage...

  19. Alkylene-bridged polygerm- and polygermsilsesqui-oxanes: New hybrid organic-inorganic materials

    SciTech Connect (OSTI)

    Jamison, G.M.; Loy, D.A.; Zender, G. [Sandia National Labs., Albuquerque, NM (United States); Shea, K.J. [California Univ., Irvine, CA (United States). Dept. of Chemistry

    1993-12-31

    Alkylene-bridge polygerm- and polygermsilsequioxanes have been formed by hydrolysis-condensation of their corresponding (EtO){sub 3}M(CH{sub 2}){sub n}Ge(OEt){sub 3} monomers under HCl- and NEt{sub 3}-catalyzed conditions in ethanol. Solid state {sup 13}C and {sup 29}Si NMR indicate the retention of the alkylene bridging moiety during polymerization. The resulting aerogels are mesoporous materials with high surface areas. Incorporation of the short ethylene bridging unit results in higher surface areas than when heylene bridges are present. The porous nature of hexylene-bridged hybrid network [Si(CH{sub 2}){sub 6}GeO{sub 3}]{sub n} appears insensitive to the acidic or basic nature of the catalyst employed in it formation, in contrast to its polysilsesquioxane counterpart. Work is underway to determine the origin of porosity in these materials, and to characterize xerogel materials generated from these monomers.

  20. This paper presents the current status of a US-Korea collaborative research on bridge health moni-

    E-Print Network [OSTI]

    Lynch, Jerome P.

    of Integrated System for Smart Evaluation of Load Carry- ing Capacity of Bridges. Technical Report, KoreaABSTRACT This paper presents the current status of a US- Korea collaborative research on bridge-term performance and struc- tural integrity of highway bridges. Emerging sensors and monitoring technologies

  1. Experimental Investigation of the Role of Entrapped Air on Solitary Wave Forces on a Coastal Bridge Deck

    E-Print Network [OSTI]

    Experimental Investigation of the Role of Entrapped Air on Solitary Wave Forces on a Coastal Bridge of bridge structures during tsunami and storm surge events, most recently the Tohoku (2011) and Indian Ocean a tsunami event, large volumes of water may propagate onshore at high speeds. Many coastal bridges

  2. Behavior of Concrete Bridge Decks Reinforced with MMFX Steel Hatem Seliem, Doctoral Student, Civil Engineering Dept., NCSU, USA

    E-Print Network [OSTI]

    Behavior of Concrete Bridge Decks Reinforced with MMFX Steel Hatem Seliem, Doctoral Student, Civil is considered to be one of the leading causes of deterioration of concrete bridges. This fact has led 60 steel in concrete bridge decks. However, despite these field applications, there is insufficient

  3. Phase-Shifted Full Bridge DC-DC Converter with Energy Recovery Clamp and Reduced Circulating Current

    E-Print Network [OSTI]

    Phase-Shifted Full Bridge DC-DC Converter with Energy Recovery Clamp and Reduced Circulating@aei.com Abstract - This paper introduces a full bridge converter with reduced circulating current and a reduction bridge converter operating at 32 kHz switching frequency. Losses and efficiency of the experimental

  4. Bridged polysilsesquioxane xerogels: A molecular based approach for the preparation of porous hybrid organic-inorganic materials

    SciTech Connect (OSTI)

    Small, J.H.; Shea, K.J. [Univ. of California, Irvine, CA (United States). Dept. of Chemistry; Loy, D.A. [Sandia National Labs., Albuquerque, NM (United States)

    1995-06-01

    Bridged polysilsesquioxanes represent an interesting family of hybrid organic-inorganic composite materials. It has been shown that manipulation of the organic bridging component offers the potential for the synthesis of a variety of materials with a range of surface areas and porosities. In addition, incorporation of a heteroatom within the bridging organic component allows for further chemical transformation of the polysilsesquioxane material.

  5. Matricial bridges for "Matrix algebras converge to the sphere"

    E-Print Network [OSTI]

    Marc A. Rieffel

    2015-02-01

    In the high-energy quantum-physics literature one finds statements such as "matrix algebras converge to the sphere". Earlier I provided a general setting for understanding such statements, in which the matrix algebras are viewed as quantum metric spaces, and convergence is with respect to a quantum Gromov-Hausdorff-type distance. In the present paper, as preparation of discussing similar statements for convergence of "vector bundles" over matrix algebras to vector bundles over spaces, we introduce and study suitable matrix-norms for matrix algebras and spaces. Very recently Latremoliere introduced an improved quantum Gromov-Hausdorff-type distance between quantum metric spaces. We use it throughout this paper. To facilitate the calculations we introduce and develop a general notion of "bridges with conditional expectations".

  6. A new bridge between leptonic CP violation and leptogenesis

    E-Print Network [OSTI]

    G. C. Branco; R. Gonzalez Felipe; F. R. Joaquim

    2006-09-28

    Flavor effects due to lepton interactions in the early Universe may have played an important role in the generation of the cosmological baryon asymmetry through leptogenesis. If the only source of high-energy CP violation comes from the left-handed leptonic sector, then it is possible to establish a bridge between flavored leptogenesis and low-energy leptonic CP violation. We explore this connection taking into account our present knowledge about low-energy neutrino parameters and the matter-antimatter asymmetry observed in the Universe. In this framework, we find that leptogenesis favors a hierarchical light neutrino mass spectrum, while for quasi-degenerate and inverted hierarchical neutrino masses there is a very narrow allowed window. The absolute neutrino mass scale turns out to be m < 0.1 eV.

  7. Hydrocarbon-bridged polysiloxane and polysilsesquioxane network materials

    SciTech Connect (OSTI)

    Jamison, G.M.; Loy, D.A.; Assink, R.A. [Sandia National Labs., Albuquerque, NM (United States). Properties of Organic Materials Dept.; Shea, K.J. [Univ. of California, Irvine, CA (United States). Dept. of Chemistry

    1994-12-31

    Hexylene and phenylene-bridged polymethylsiloxane xerogels X-2 and X-4, respectively, were prepared by the sol-gel hydrolysis and condensation of 1, 6-bis(diethoxymethylsilyl)hexane 1 and 1, 4-bis(diethoxymethylsilyl)benzene 2 under acidic and basic conditions. These polymerizations afforded network polymers in the form of wet gels within several hours. The gels were processed to afford xerogels whose characteristics (determined by solid state {sup 13}C and {sup 29}Si CP MAS NMR spectroscopy and nitrogen sorption porosimetry) were compared and contrasted with those of their analogous polysilsesquioxanes. {sup 29}Si CP MAS NMR indicates a high degree of hydrolysis and polycondensation; porosimetry measurements reveal that the materials have significant surface areas, save for the acid-catalyzed hexylene gels X-2.

  8. Spitzer View of Massive Star Formation in the Tidally Stripped Magellanic Bridge

    E-Print Network [OSTI]

    Chen, C -H Rosie; Muller, Erik; Kawamura, Akiko; Gordon, Karl D; Sewi?o, Marta; Whitney, Barbara A; Fukui, Yasuo; Madden, Suzanne C; Meade, Marilyn R; Meixner, Margaret; Oliveira, Joana M; Robitaille, Thomas P; Seale, Jonathan P; Shiao, Bernie; van Loon, Jacco Th

    2014-01-01

    The Magellanic Bridge is the nearest low-metallicity, tidally stripped environment, offering a unique high-resolution view of physical conditions in merging and forming galaxies. In this paper we present analysis of candidate massive young stellar objects (YSOs), i.e., {\\it in situ, current} massive star formation (MSF) in the Bridge using {\\it Spitzer} mid-IR and complementary optical and near-IR photometry. While we definitely find YSOs in the Bridge, the most massive are $\\sim10 M_\\odot$, $\\ll45 M_\\odot$ found in the Large Magellanic Cloud (LMC). The intensity of MSF in the Bridge also appears decreasing, as the most massive YSOs are less massive than those formed in the past. To investigate environmental effects on MSF, we have compared properties of massive YSOs in the Bridge to those in the LMC. First, YSOs in the Bridge are apparently less embedded than in the LMC: 81% of Bridge YSOs show optical counterparts, compared to only 56% of LMC sources with the same range of mass, circumstellar dust mass, and...

  9. Aryl Bridged 1-Hydroxypyridin-2-one: Effect of the Bridge on the Eu(III) Sensitization Process

    SciTech Connect (OSTI)

    D'Aleo, Anthony; Moore, Evan G.; Szigethy, Geza; Xu, Jide; Raymond, Kenneth N.

    2009-06-17

    The efficiency of Eu3+ luminescence by energy transfer from an antenna ligand can be strongly dependent on the metal ion coordination geometry. The geometric component of the Eu(III) sensitization has been probed using series of tetradentate 1,2-HOPO derivatives that are connected by bridges of varying length and geometry. The ligands are N,N'-(1,2-phenylene)bis(1-hydroxy-6-oxo-1,6-dihydropyridine-2-carboxamide) for the ligand (L{sup 1}), 1-hydroxy-N-(2-(1-hydroxy-6-oxo-1,6-dihydropyridine-2-carboxamido)benzyl)-6-oxo-1,6-dihydropyridine-2-carboxamide (L{sup 2}) and N,N'-(1,2-phenylenebis(methylene))bis(1-hydroxy-6-oxo-1,6-dihydropyridine-2-carboxamide) (L{sup 3}). Spectroscopic characterization of both the Gd(III) and Eu(III) metal complexes, TD-DFT analysis of model compounds and evaluation of the kinetic parameters for the europium emission were completed. Some striking differences were observed in the luminescence quantum yield by altering the bridging unit. The [Eu(L{sup 2}){sub 2}]{sup -} derivative shows efficient sensitization coupled with good metal centered emission. For [Eu(L{sup 3}){sub 2}]{sup -}, the large quenching of the luminescence quantum yield compared to [Eu(L{sup 2}){sub 2}]{sup -} is primarily a result of one inner sphere water molecule bound to the europium cation while for [Eu(L{sup 1}){sub 2}]{sup -}, the low luminescence quantum yield can be attributed to inefficient sensitization of the europium ion.

  10. Dynamic characterization and damage detection in the I-40 bridge over the Rio Grande

    SciTech Connect (OSTI)

    Farrar, C.R.; Baker, W.E.; Bell, T.M.; Cone, K.M.; Darling, T.W.; Duffey, T.A.; Eklund, A.; Migliori, A.

    1994-06-01

    In the 1960`s and 1970`s over 2500 bridges were built in the U.S. with a design similar to those on Interstate 40 over the Rio Grande in Albuquerque, New Mexico. These bridges were built without structural redundancy and typically have only two plate girders carrying the entire dead and live loads. Failure of either girder is assumed to produce catastrophic failure of the bridge, hence these bridges are referred to as fracture-critical bridges. The Federal Highway Administration (FHWA) and the National Science Foundation (NSF) have provided funds to New Mexico State University (NMSU) through the New Mexico State Highway and Transportation Department (NMSH&TD) and The Alliance For Transportation Research (ATR) for evaluation and testing of the existing fracture critical bridges over the Rio Grande. Because the 1-40 bridges over the Rio Grande were to be razed during the summer of 1993, the investigators were able to introduce simulated fatigue cracks, similar to those observed in the field, into the structure in order to test various damage identification methods and to observe the changes in load paths through the structure caused by the cracking. To support this research effort, NMSU contracted Los Alamos National Laboratory (LANL) to perform experimental modal analyses, and to develop experimentally verified numerical models of the bridge. Scientists from the LANL`s Condensed Matter and Thermal Physics Group (P-10) applied state-of-the-art sensors and data acquisition software to the modal tests. Engineers from the LANL`s Advanced Engineering Technology Group (MEE-13) conducted ambient and forced vibration tests to verify detailed and simplified finite element models of the bridge. Forced vibration testing was done in conjunction with engineers from Sandia National Laboratory (SNL) who provided and operated a hydraulic shaker.

  11. Bridged polysilsesquioxanes: A molecular based approach for the synthesis of functional hybrid materials

    SciTech Connect (OSTI)

    SHEA,KENNETH J.; LOY,DOUGLAS A.

    2000-05-09

    Bridged polysilsesquioxanes (BPS) are a family of hybrid organic-inorganic materials prepared by sol-gel polymerization of molecular building blocks that contain a variable organic component and at least two trifunctional silyl groups. The resulting xerogels and aerogels have physical and mechanical properties that are strongly influenced by the organic bridging group. This talk focuses on the synthesis of functional bridged polysilsesquioxanes. Incorporation of functional groups that respond to chemical, photochemical, or thermal stimuli can provide handles for modifying bulk morphology and/or provide function. These materials can find use as ion exchange media, chromatographic stationary phases, photoresists and high capacity selective chemical absorbents.

  12. Anthracite-Crested butte folio, Colorado 

    E-Print Network [OSTI]

    Cross, Whitman, 1854-1949.; Eldridge, George Homans, 1854-1905.; Emmons, Samuel Franklin, 1841-1911.

    1894-01-01

    intake relationship to offspring age for black-tailed deer, elk, and white-tailed deer. 61 20 Scalar adjustment to milk energy concentration throughout lactation. 62 21 Scalar adjustment to milk production due to the milk requirement ratio. Milk... and likelihood of return at recreational areas (Swanson et al. 1989, Hastings 1986). Income from hunting operations is a major source of compensatory income for traditional farmers and ranchers (Haney 1983, Hill 1994). While deer are obviously an important...

  13. Delcer Butte Geothermal Project | 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 on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi: EnergyS4263135°,Delbuoy Jump

  14. Butte Electric Coop, 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 on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC JumpBiossenceBrunswick, Maine:IAEA CooperationSolar

  15. Square Butte Electric Coop | 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 on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS ReportEurope GmbHSoloPage Edit withSpion

  16. Twin Buttes Wind Farm | 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 on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin Film SolarTown(LECBP) | OpenTrack WindTuvalu:

  17. Butte, Montana: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank, Maine:Kansas: Energy Resources Jump to: navigation,ButlerSouthJump to:

  18. Coffin Butte Biomass Facility | 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 on QA:QA J-E-1 SECTIONRobertsdale, Alabama (Utility Company) JumpIowa: EnergyEnergy InformationGeorgia:Coffey

  19. Mitchell Butte Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII Jump to: navigation, searchsource History View New Pages Recent

  20. Modal Identification Study of Vincent Thomas Bridge Using Simulated Wind-Induced Ambient Vibration Data

    E-Print Network [OSTI]

    He, Xianfei; Moaveni, Babak; Conte, Joel P; Elgamal, Ahmed; Masri, Sami F.

    2008-01-01

    Journal of Sound and Vibration, 225 (1), 153-170. Matsumoto,systems from changes in their vibration characteristics: Aheaving and torsional vibration of bridge decks: the case of

  1. Application of the Grillage Methodology to Determine Load Distribution Factors for Spread Slab Beam Bridges 

    E-Print Network [OSTI]

    Petersen-Gauthier, Joel

    2013-08-09

    Transverse load distribution behavior amongst bridge girders is influenced by many parameters including girder material properties, spacing, skew, deck design, and stiffening element interactions. In order to simply and ...

  2. Assessment of critical parameters that affect the seismic performance of bridge steel pedestals 

    E-Print Network [OSTI]

    Srivastava, Siddharth

    2009-05-15

    The Georgia Department of Transportation has been installing steel pedestals on bridges, ranging in height up to 33½” (0.85m) to increase the vertical clearance of many multi-span simply-supported and multi-span continuous ...

  3. Ballistic thermal transport in a cylindrical semiconductor nanowire modulated with bridge contacts

    SciTech Connect (OSTI)

    Zhang, Yong Xie, Zhong-Xiang Yu, Xia; Wang, Hai-Bin; Li, Ke-Min

    2014-10-14

    Using the scattering-matrix method, we studied ballistic phonon transmission and thermal conductance at low temperatures in a cylindrical quantum wire with bridge contacts. The transmission coefficient exhibited a stepped profile, which became more evident as the bridge radius increased. When the dimensions of the bridge are identical to those of main wires, we observed a quantum platform of the thermal conductance, even in the presence of interface scattering. When the dimensions of the bridge are smaller than those of main wires, however, we could not observe the quantum platform. We also revealed other interesting physical properties, such as universal quantum thermal conductance and resonant transmission. A brief analysis of these results is given.

  4. Hydrogen loaded metal for bridge-foils for enhanced electric gun/slapper detonator operation

    DOE Patents [OSTI]

    Osher, J.E.

    1992-01-14

    The invention provides a more efficient electric gun or slapper detonator which provides a higher velocity flyer by using a bridge foil made of a hydrogen loaded metal. 8 figs.

  5. Hydrodynamics in bridging and aggregation of two colloidal particles in a near-critical binary mixture

    E-Print Network [OSTI]

    Shunsuke Yabunaka; Ryuichi Okamoto; Akira Onuki

    2015-05-23

    We investigate bridging and aggregation of two colloidal particles in a near-critical binary mixture when the fluid far from the particles is outside the coexistence (CX) curve and is rich in the component disfavored by the colloid surfaces. In such situations, the adsorption-induced interaction is enhanced, leading to bridging and aggregation of the particles. We realize bridging firstly by changing the temperature with a fixed interparticle separation and secondly by letting the two particles aggregate. The interparticle attractive force dramatically increases upon bridging. The dynamics is governed by hydrodynamic flow around the colloid surfaces. In aggregation, the adsorption layers move with the particles and squeezing occurs at narrow separation. We take into account the renormalization effect due to the critical fluctuations using the recent local functional theory [J. Chem. Phys. 136, 114704 (2012)].

  6. Experimental verification of a bridge-shaped, nonlinear vibration energy harvester

    E-Print Network [OSTI]

    Gafforelli, Giacomo

    This paper reports a comprehensive modeling and experimental characterization of a bridge shaped nonlinear energy harvester. A doubly clamped beam at large deflection requires stretching strain in addition to the bending ...

  7. A PCI Express to PCIX Bridge optimized for performance and area

    E-Print Network [OSTI]

    Chong, Margaret J. (Margaret Jane), 1981-

    2004-01-01

    This thesis project involves the architecture, implementation, and verification of a high bandwidth, low cost ASIC digital logic core that is compliant with the PCI Express to PCIX Bridge Specification. The core supports ...

  8. Prediction of long-term prestress loss in concrete box girder bridges

    E-Print Network [OSTI]

    Kim, Seung Dae

    2009-01-01

    pretensioned bridge girders,” PCI Journal, Vol. 50, No. 5,during the First 30 Months,” PCI Journal, Vol. 41, No. 5,Prestress Loss and Camber,” PCI Journal, Vol. 17, No. 5, pp.

  9. 1. A 13-card bridge hand is selected at random from a standard 52 ...

    E-Print Network [OSTI]

    2015-07-29

    A 13-card bridge hand is selected at random from a standard 52-card deck. What is the probability that such hand has 0 cards in one suit, 5 cards in another suit, ...

  10. On the Compatibility Between Quantum and Relativistic Effects in an Electromagnetic Bridge Theory

    E-Print Network [OSTI]

    Massimo Auci

    2010-03-18

    The Dipolar Electromagnetic Source (DEMS) model, based on the Poynting Vector Conjecture, conduces in Bridge Theory to a derivation of the Lorentz transformation connecting pairs of events. The results prove a full compatibility between quantum and relativistic effects.

  11. Stopper-Bearing System – A Solution to Displacement Control of Bridge Decks 

    E-Print Network [OSTI]

    Tsai, Yi-Te

    2010-10-12

    Bridges play an important role in society, especially during the post-earthquake period that enables emergency vehicles and traffic for safe egress and ingress to minimize the loss of property and life. However, some past earthquakes have resulted...

  12. Finite Element Study on Bridge Details Susceptible to Distortion-Induced Fatigue

    E-Print Network [OSTI]

    Adams, Christopher Andrew

    2010-12-00

    Some bridges designed prior to the mid 1980s have experienced problems in the web-gap region, above plates connecting intermediate stiffeners to the girder web and below girder top flanges, due to differential deflections ...

  13. Development of criteria for fatigue repairs in bridge girders damaged by out-of-plane distortion 

    E-Print Network [OSTI]

    Wilson, Scott David

    1994-01-01

    Numerous highway bridge girders across the United States have experienced fatigue cracking due to repetitive out-of-plane distortion at unstiffened web gaps caused by poorly designed diaphragm connection details. Due to ...

  14. REPAIR OF BRIDGE STEEL GIRDERS DAMAGED BY DISTORTION-INDUCED FATIGUE

    E-Print Network [OSTI]

    Alemdar, Fatih

    2011-12-31

    This study investigates the repair of steel bridge girders damaged by distortion-induced fatigue. The study is presented in three parts. The first part describes finite element modeling techniques used to evaluate the ...

  15. Repair of Steel Bridge Girders Damaged by Distortion-Induced Fatigue

    E-Print Network [OSTI]

    Nagati, Amr Daniel

    2012-08-31

    Several studies have identified distortion-induced fatigue as the leading cause of cracks in steel bridges built prior to the mid-1980s. Experimental and computer simulations of 914-mm (36-in.) deep girder-cross frame ...

  16. Webinar: 20K Hour GATEWAY Testing Results for I-35W Bridge

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy has released a GATEWAY Demonstration report on the longer-term performance of an LED lighting system that was installed on the I-35W Bridge in Minneapolis in September...

  17. Design and Construction Integration of a Continuous Precast Prestressed Concrete Bridge System 

    E-Print Network [OSTI]

    Roy, Subha Lakshmi 1982-

    2011-04-15

    An effective, viable design solution for the elevated viaduct guideway for Universal Freight Shuttle (UFS) system championed by Texas Transportation Institute (TTI) is presented. The proposed precast elevated UFS bridge system is analyzed...

  18. Analytical Investigation of Repair Methods for Fatigue Cracks in Steel Bridges

    E-Print Network [OSTI]

    Richardson, Temple

    2012-08-31

    Numerous retrofits have been used to stop distortion-induced fatigue cracks from initiating and propagating in steel bridges. Some decrease stiffness in the web gap region to transfer the load path to an area of higher stiffness, while others...

  19. Determining worst-case fatigue thresholds for grain-bridging ceramics

    E-Print Network [OSTI]

    Kruzic, J.J.; Yuan, R.; Cannon, R.M.; Ritchie, R.O.

    2002-01-01

    bridging silicon carbide ceramic," Acta Mater. , 46 (2) 17.of R-curve behavior in ceramic/metal composites," Actastresses and R-curves in ceramic/metal composites," J. Eur.

  20. Effect of cumulative seismic damage and corrosion on life-cycle cost of reinforced concrete bridges 

    E-Print Network [OSTI]

    Kumar, Ramesh

    2009-05-15

    reinforced concrete (RC) bridges in earthquake prone regions. The approach is developed by combining cumulative seismic damage and damage associated to corrosion due to environmental conditions. Cumulative seismic damage is obtained from a low-cycle fatigue...

  1. Sol-gel synthesis of hybrid organic-inorganic materials. Hexylene- and phenylene-bridged polysiloxanes

    SciTech Connect (OSTI)

    Loy, D.A.; Jamison, G.M.; Baugher, B.M.; Myers, S.A.; Assink, R.A.; Shea, K.J. [Sandia National Laboratories, Albuquerque, NM (United States)] [Sandia National Laboratories, Albuquerque, NM (United States); [Univ. of California, Irvine, CA (United States)

    1996-03-01

    New highly cross-linked polysiloxanes were prepared by sol-gel polymerization of 1,6-bis(diethoxymethylsilyl)hexane (1) and 1,4-bis(diethoxymethylsilyl)benzene (2). Hydrolysis and condensation of 1 and 2 under acidic and basic conditions with 4 equiv of water led to the rapid formation of hexylene- and phenylene-bridged polysiloxane gels. The dry gels (xerogels) were intractable, insoluble materials that were noticeably hydrophobic, exhibiting no swelling in organic solvents or water. Most of the xerogels were high surface area, mesoporous materials. Hexylene-bridged polysiloxanes prepared under acidic conditions were always nonporous regardless of whether they were processed to afford xerogels or supercritically dried as aerogels. Hexylene-bridged polysiloxanes prepared under basic conditions and all of the phenylene-bridged polysiloxanes were mesoporous with surface areas as high as 1025 m{sup 2}/g. 35 refs., 9 figs., 3 tabs.

  2. Pin-to-Pin Electrostatic Discharge Protection for Semiconductor Bridges

    SciTech Connect (OSTI)

    KING, TONY L.; TARBELL, WILLIAM W.

    2002-07-01

    The lack of protection for semiconductor bridges (SCBs) against human electrostatic discharge (ESD) presents an obstacle to widespread use of this device. The goal of this research is to protect SCB initiators against pin-to-pin ESD without affecting their performance. Two techniques were investigated. In the first, a parallel capacitor is used to attenuate high frequencies. The second uses a parallel zener diode to limit the voltage amplitude. Both the 1 {micro}F capacitor and the 14 V zener diode protected the SCBs from ESD. The capacitor provided the best protection. The protection circuits had no effect on the SCB's threshold voltage. The function time for the CP-loaded SCBs with capacitors was about 11 {micro}s when fired by a firing set charged to 40 V. The SCBs failed to function when protected by the 6 V and 8 V zeners. The 51 V zener did not provide adequate protection against ESD. The parallel capacitor succeeded in protecting SCB initiators against pin-to-pin ESD without affecting their performance. Additional experiments should be done on SCBs and actual detonators to further quantify the effectiveness of this technique. Methods for retrofitting existing SCB initiators and integrating capacitors into future devices should also be explored.

  3. Chaos: a bridge from microscopic uncertainty to macroscopic randomness

    E-Print Network [OSTI]

    S. J. Liao

    2012-01-09

    It is traditionally believed that the macroscopic randomness has nothing to do with the micro-level uncertainty. Besides, the sensitive dependence on initial condition (SDIC) of Lorenz chaos has never been considered together with the so-called continuum-assumption of fluid (on which Lorenz equations are based), from physical and statistic viewpoints. A very fine numerical technique (Liao, 2009) with negligible truncation and round-off errors, called here the "clean numerical simulation" (CNS), is applied to investigate the propagation of the micro-level unavoidable uncertain fluctuation (caused by the continuum-assumption of fluid) of initial conditions for Lorenz equation with chaotic solutions. Our statistic analysis based on CNS computation of 10,000 samples shows that, due to the SDIC, the uncertainty of the micro-level statistic fluctuation of initial conditions transfers into the macroscopic randomness of chaos. This suggests that chaos might be a bridge from micro-level uncertainty to macroscopic randomness, and thus would be an origin of macroscopic randomness. We reveal in this article that, due to the SDIC of chaos and the inherent uncertainty of initial data, accurate long-term prediction of chaotic solution is not only impossible in mathematics but also has no physical meanings. This might provide us a new, different viewpoint to deepen and enrich our understandings about the SDIC of chaos.

  4. Application of an automated wireless structural monitoring system for long-span suspension bridges

    SciTech Connect (OSTI)

    Kurata, M.; Lynch, J. P. [Department of Civil and Environ. Eng., University of Michigan, Ann Arbor, MI 48105 (United States); Linden, G. W. van der [SC Solutions, Sunnyvale, CA 94085 (United States); Hipley, P.; Sheng, L.-H. [California Department of Transportation (Caltrans), Sacramento, CA 95816 (United States)

    2011-06-23

    This paper describes an automated wireless structural monitoring system installed at the New Carquinez Bridge (NCB). The designed system utilizes a dense network of wireless sensors installed in the bridge but remotely controlled by a hierarchically designed cyber-environment. The early efforts have included performance verification of a dense network of wireless sensors installed on the bridge and the establishment of a cellular gateway to the system for remote access from the internet. Acceleration of the main bridge span was the primary focus of the initial field deployment of the wireless monitoring system. An additional focus of the study is on ensuring wireless sensors can survive for long periods without human intervention. Toward this end, the life-expectancy of the wireless sensors has been enhanced by embedding efficient power management schemes in the sensors while integrating solar panels for power harvesting. The dynamic characteristics of the NCB under daily traffic and wind loads were extracted from the vibration response of the bridge deck and towers. These results have been compared to a high-fidelity finite element model of the bridge.

  5. Search for a bridge to the energy future: Proceedings

    SciTech Connect (OSTI)

    Saluja, S.S.

    1986-01-01

    The alarming effects, concerns, and even the insights into long-range energy planning that grew out of the OPEC oil embargo of 1973 are fading from the view of a shortsighted public. The enthusiastic initiatives taken in many countries for the development of alternative energy sources have withered due to lack of economic and/or ideological incentive. The events since December 1985, when the members of OPEC decided to increase production in an effort to capture their share of market, have brought down the prices of a barrel of crude to less than US $11 and have made any rational analysis very complex. This has made even the proponents of the alternative energy sources pause and think. The US has, as usual, oscillated from panic to complacency. The Libyan crisis, however, has brought the dangers of complacency into sharp focus. The first commercial coal gasification plant, constructed with a capital investment of over US $2 billion, was abandoned by the owners and is being operated by the US Department of Energy temporarily. In their effort to find a private owner, the US Department of Energy has set the date of auction of this prestigious plant for May 28, 1986. And if an appropriate bid is not forthcoming, the plant faces a very uncertain future. Coal, considered by the World Coal Study (WOCOL) at MIT in 1980, to be a bridge to a global energy future, seems to have lost its luster due to the oil glut which we all know is temporary. This was evident when the bill to grant the Right of Eminent Domain for transportation of coal was defeated. This conference was organized to bring together experts in different areas from various countries to discuss the state of the art and the rate of progress in different alternative energy forms. The recent accident at the Chernobyl nuclear power plant in USSR has brought home the need of diversification of the alternative energy sources.

  6. An investigation of corrosion in semiconductor bridge explosive devices.

    SciTech Connect (OSTI)

    Klassen, Sandra Ellen; Sorensen, Neil Robert

    2007-05-01

    In the course of a failure investigation, corrosion of the lands was occasionally found in developmental lots of semiconductor bridge (SCB) detonators and igniters. Evidence was found in both detonators and igniters of the gold layer being deposited on top of a corroded aluminum layer, but inspection of additional dies from the same wafer did not reveal any more corroded parts. In some detonators, evidence was found that corrosion of the aluminum layer also happened after the gold was deposited. Moisture and chloride must both be present for aluminum to corrode. A likely source for chloride is the adhesive used to bond the die to the header. Inspection of other SCB devices, both recently manufactured and manufactured about ten years ago, found no evidence for corrosion even in devices that contained SCBs with aluminum lands and no gold. Several manufacturing defects were noted such as stains, gouges in the gold layer due to tooling, and porosity of the gold layer. Results of atmospheric corrosion experiments confirmed that devices with a porous gold layer over the aluminum layer are susceptible to extensive corrosion when both moisture and chlorine are present. The extent of corrosion depends on the level of chlorine contamination, and corrosion did not occur when only moisture was present. Elimination of the gold plating on the lands eliminated corrosion of the lands in these experiments. Some questions remain unanswered, but enough information was gathered to recommend changes to materials and procedures. A second lot of detonators was successfully built using aluminum SCBs, limiting the use of Ablebond{trademark} adhesive, increasing the rigor in controlling exposure to moisture, and adding inspection steps.

  7. Thick-to-Thin Filament Surface Distance Modulates Cross-Bridge Kinetics in Drosophila Flight Muscle

    SciTech Connect (OSTI)

    Tanner, Bertrand C.W.; Farman, Gerrie P.; Irving, Thomas C.; Maughan, David W.; Palmer, Bradley M.; Miller, Mark S. (IIT); (Vermont); (BU)

    2012-09-19

    The demembranated (skinned) muscle fiber preparation is widely used to investigate muscle contraction because the intracellular ionic conditions can be precisely controlled. However, plasma membrane removal results in a loss of osmotic regulation, causing abnormal hydration of the myofilament lattice and its proteins. We investigated the structural and functional consequences of varied myofilament lattice spacing and protein hydration on cross-bridge rates of force development and detachment in Drosophila melanogaster indirect flight muscle, using x-ray diffraction to compare the lattice spacing of dissected, osmotically compressed skinned fibers to native muscle fibers in living flies. Osmolytes of different sizes and exclusion properties (Dextran T-500 and T-10) were used to differentially alter lattice spacing and protein hydration. At in vivo lattice spacing, cross-bridge attachment time (t{sub on}) increased with higher osmotic pressures, consistent with a reduced cross-bridge detachment rate as myofilament protein hydration decreased. In contrast, in the swollen lattice, t{sub on} decreased with higher osmotic pressures. These divergent responses were reconciled using a structural model that predicts t{sub on} varies inversely with thick-to-thin filament surface distance, suggesting that cross-bridge rates of force development and detachment are modulated more by myofilament lattice geometry than protein hydration. Generalizing these findings, our results suggest that cross-bridge cycling rates slow as thick-to-thin filament surface distance decreases with sarcomere lengthening, and likewise, cross-bridge cycling rates increase during sarcomere shortening. Together, these structural changes may provide a mechanism for altering cross-bridge performance throughout a contraction-relaxation cycle.

  8. Salt-Bridge Transition State for the Charge Separation 2+ f CoOH(H2O)2

    E-Print Network [OSTI]

    Metz, Ricardo B.

    Salt-Bridge Transition State for the Charge Separation Co(H2O)4 2+ f CoOH(H2O)2 + + H3O+ Martin K centers form a Co2+ -OH- -H3O+ salt bridge, lowering the barrier for the reaction. The transition state that this reaction proceeds via a salt-bridge transition state.11 The barrier height is directly determined

  9. I35W collapse, rebuild, and structural health monitoring - challenges associated with structural health monitoring of bridge systems

    SciTech Connect (OSTI)

    French, C. E.; Hedegaard, B.; Shield, C. K.; Stolarski, H. [Department of Civil Engineering, University of Minnesota, Minneapolis, MN 55455 (United States)

    2011-06-23

    During evening rush hour traffic on August 1, 2007, the major interstate highway bridge carrying I35W over the Mississippi River in Minneapolis catastrophically failed, tragically taking the lives of thirteen people and injuring many more. The steel truss bridge, constructed in 1967, was undergoing deck reconstruction during the collapse, and was estimated to carry more than 140,000 vehicles daily. This tragedy generated great interest in employment of structural health monitoring systems. The I35W St. Anthony Falls Bridge, a post-tensioned concrete box bridge constructed to replace the collapsed steel truss bridge, contains over 500 instruments to monitor the structural behavior. Numerical models of the bridge are being developed and calibrated to the collected data obtained from truck load tests and thermal effects. The data obtained over the first few years of monitoring are being correlated with the calibrated models and used to develop the baseline bridge behavior. This information is being used to develop a system to monitor and interpret the long-term behavior of the bridge. This paper describes the instrumentation, preliminary results from the data and model calibration, the plan for developing long-term monitoring capabilities, and the challenges associated with structural health monitoring of bridge systems. In addition, opportunities and directions for future research required to fully realize the objectives of structural health monitoring are described.

  10. Damage identification algorithms applied to numerical modal data from a bridge

    SciTech Connect (OSTI)

    Jauregui, D.V.; Farrar, C.R.

    1996-02-01

    This paper extends the work summarized in the accompanying paper {open_quotes}Comparison of Damage Identification Algorithms on Experimental Modal Data From A Bridge.{close_quotes} A finite element model of the continuous three-span portion of the I-40 bridges, which once crossed the Rio Grande in Albuquerque, NM, was constructed. Following the experimental modal analysis, the bridge tests are repeated analytically using benchmarked finite element models of the bridge. A combination of shell and beam elements form the bridge model. Damage was simulated by creating adjacent nodes and disconnecting the elements on either side of the crack. However, because of the discretization of the finite element models only the final three levels of damage were evaluated. In addition to the analytical simulation of the experiments, the girder crack was repositioned at other potential damage locations. Analytical modal parameters were extracted through signal processing techniques, similar to those used in the experimental investigation and subsequently fed into damage identification routines. These routines have been adapted from those presented at past IMAC conferences and are identical to the ones used in the experimental investigation reported in the accompanying paper. This study provides a direct comparison of the relative accuracy of these different damage identification methods when they are applied to a set of standard numerical problems. The numerical models allow a variety of damage scenarios to be studied once the models have been benchmarked against experimental data.

  11. Formation Process of a Light Bridge Revealed with the Hinode Solar Optical Telescope

    E-Print Network [OSTI]

    Y. Katsukawa; T. Yokoyama; T. E. Berger; K. Ichimoto; M. Kubo; B. W. Lites; S. Nagata; T. Shimizu; R. A. Shine; Y. Suematsu; T. D. Tarbell; A. M. Title; S. Tsuneta

    2007-09-17

    The Solar Optical Telescope (SOT) aboard HINODE successfully and continuously observed a formation process of a light bridge in a matured sunspot of the NOAA active region 10923 for several days with high spatial resolution. During its formation, many umbral dots were observed emerging from the leading edges of penumbral filaments, and intruding into the umbra rapidly. The precursor of the light bridge formation was also identified as the relatively slow inward motion of the umbral dots which emerged not near the penumbra, but inside the umbra. The spectro-polarimeter on SOT provided physical conditions in the photosphere around the umbral dots and the light bridges. We found the light bridges and the umbral dots had significantly weaker magnetic fields associated with upflows relative to the core of the umbra, which implies that there was hot gas with weak field strength penetrating from subphotosphere to near the visible surface inside those structures. There needs to be a mechanism to drive the inward motion of the hot gas along the light bridges. We suggest that the emergence and the inward motion are triggered by a buoyant penumbral flux tube as well as the subphotospheric flow crossing the sunspot.

  12. Low Dimensional Description of Pedestrian-Induced Oscillation of the Millennium Bridge

    E-Print Network [OSTI]

    Mahmoud M. Abdulrehem; Edward Ott

    2008-09-02

    When it opened to pedestrian traffic in the year 2000, London's Millennium Bridge exhibited an unwanted, large, side-to-side oscillation which was apparently due to a resonance between the stepping frequency of walkers and one of the bridge modes. Models for this event, and similar events on other bridges, have been proposed. The model most directly addressing the synchronization mechanism of individual walkers and the resulting global response of the bridge-pedestrian system is one developed by Eckhardt et al. This model treats individual walkers with a phase oscillator description and is inherently high dimensional with system dimensionality (N+2), where N is the number of walkers. In the present work we use a method proposed by Ott and Antonsen to reduce the model of Eckhardt et al. to a low dimensional dynamical system, and we employ this reduced description to study the global dynamics of the bridge/pedestrian interaction. More generally, this treatment serves as an interesting example of the possibility of low dimensional macroscopic behavior in large systems of coupled oscillators.

  13. Finite element analysis of the I-40 bridge over the Rio Grande

    SciTech Connect (OSTI)

    Farrar, C.R.; Duffey, T.A.; Goldman, P.A.; Jauregui, D.V.; Vigil, J.S.

    1996-01-01

    In the 1960s and 1970s numerous bridges were built in the US with a design similar to those on Interstate 40 (I-40) over the Rio Grande in Albuquerque, New Mexico. The Federal Highway Administration (FHWA) and the National Science Foundation (NSF) have provided funds to New Mexico State University (NMSU) through the New Mexico State Highway and Transportation Department (NMSH and TD) and The Alliance For Transportation Research (ATR) for evaluation and testing of the existing fracture-critical bridges over the Rio Grande. Because the I-40 Bridges over the Rio Grande were to be razed during the summer of 1993, the investigators were able to introduce damage into the structure in order to test various damage identification methods and to observe the changes in load paths through the structure caused by the cracking. To support this research effort, NMSU contracted Los Alamos National Laboratory (LANL) to perform experimental modal analyses, and to develop experimentally verified numerical models of the bridge. A previous report (LA-12767-MS) summarizes the results of the experimental modal analyses. This report summarizes the numerical analyses of the bridges and compares the results of these analyses to the experimental results.

  14. X-ray Emission from the Taffy (VV254) Galaxies and Bridge

    E-Print Network [OSTI]

    Appleton, Philip; Bitsakis, Theodoros; Wang, Junfeng; Peterson, Bradley; Lisenfeld, Ute; Alatalo, Katherine; Guillard, Pierre; Boulanger, Francois; Cluver, Michelle; Gao, Yu; Helou, George; Ogle, Patrick; Struck, Curtis

    2015-01-01

    We present the first X-ray observations of the Taffy galaxies (UGC 12914/5) with the Chandra observatory, and detect soft X-ray emission in the region of the gas-rich, radio-continuum-emitting Taffy bridge. The results are compared to Herschel observations of dust and diffuse [CII] line-emitting gas. The diffuse component of the Taffy bridge has an X-ray luminosity of L(X) (0.5-8keV) =5.4 x 10^39 erg s^-1, which accounts for 19% of the luminosity of the sum for the two galaxies. The total mass in hot gas is (0.8--1.3) x 10^8 M_sun, which is approximately 1% of the total (HI~+~H2) gas mass in the bridge, and ~11% of the mass of warm molecular hydrogen discovered by Spitzer. The soft X-ray and dense CO-emitting gas in the bridge have offset distributions, with the X-rays peaking along the north-western side of the bridge in the region where stronger far-IR dust and diffuse [CII] gas is observed by Herschel. We detect nine Ultra Luminous X-ray sources (ULXs) in the system, the brightest of which is found in the ...

  15. Standard guide for mutual inductance bridge applications for wall thickness determinations in boiler tubing

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    2010-01-01

    1.1 This guide describes a procedure for obtaining relative wall thickness indications in ferromagnetic and non-ferromagnetic steels using the mutual inductance bridge method. The procedure is intended for use with instruments capable of inducing two substantially identical magnetic fields and noting the change in inductance resulting from differing amounts of steel. It is used to distinguish acceptable wall thickness conditions from those which could place tubular vessels or piping at risk of bursting under high temperature and pressure conditions. 1.2 This guide is intended to satisfy two general needs for users of industrial Mutual Inductance Bridge (MIB) equipment: (1) the need for a tutorial guide addressing the general principles of Mutual Inductance Bridges as they apply to industrial piping; and (2) the need for a consistent set of MIB performance parameter definitions, including how these performance parameters relate to MIB system specifications. Potential users and buyers, as well as experienced M...

  16. On the relation between optimal transport and Schrödinger bridges: A stochastic control viewpoint

    E-Print Network [OSTI]

    Yongxin Chen; Tryphon Georgiou; Michele Pavon

    2014-12-15

    We take a new look at the relation between the optimal transport problem and the Schr\\"{o}dinger bridge problem from the stochastic control perspective. We show that the connections are richer and deeper than described in existing literature. In particular: a) We give an elementary derivation of the Benamou-Brenier fluid dynamics version of the optimal transport problem; b) We provide a new fluid dynamics version of the Schr\\"{o}dinger bridge problem; c) We observe that the latter provides an important connection with optimal transport without zero noise limits; d) We propose and solve a fluid dynamic version of optimal transport with prior; e) We can then view optimal transport with prior as the zero noise limit of Schr\\"{o}dinger bridges when the prior is any Markovian evolution. In particular, we work out the Gaussian case. A numerical example of the latter convergence involving Brownian particles is also provided.

  17. The Origin of Large-scale HI structures in the Magellanic Bridge

    E-Print Network [OSTI]

    E. Muller; K. Bekki

    2007-06-27

    We investigate the formation of a number of key large-scale HI features in the ISM of the Magellanic Bridge using dissipationless numerical simulation techniques. This study comprises the first direct comparison between detailed HI maps of the Bridge and numerical simulations. We confirm that the SMC forms two tidal filaments: a near arm, which forms the connection between the SMC and LMC, and a counterarm. We show that the HI of the most dense part of the Bridge can become arranged into a bimodal configuration, and that the formation of a "loop" of HI, located off the North-Eastern edge of the SMC can be reproduced simply as a projection of the counter-arm, and without invoking localised energy-deposition processes such as SNe or stellar winds.

  18. The bridge permeameter; An alternative method for single-phase, steady-state permeability measurements

    SciTech Connect (OSTI)

    Graf, D.C.; Warpinski, N.R.

    1994-03-01

    Laboratory measurements of single-phase, steady-state permeability of porous rock are important for a number of different applications. The oil and gas industry uses permeability data as a key indicator of the producability of a hydrocarbon reservoir; effective containment of large volumes of oil in underground salt caverns is directly dependent upon the permeability of the adjacent cavern walls; and safe, long term underground isolation of radioactive and hazardous waste is contingent upon the flow and transport characteristics of the surrounding geologic formations. An alternative method for measuring single-phase, steady-state permeability of porous rock is presented. The use of troublesome and expensive mass flow meters is eliminated and replaced with a bridge configuration of flow resistors. Permeability values can be determined directly from differential pressures across the bridge network, resulting in potentially significant cost savings and simplification for conducting these types of measurements. Results from the bridge permeameter are compared with results obtained using conventional methods.

  19. Comparison of bridged polysilsesquioxane xerogels prepared from methoxy-, ethoxy-, and propoxy-silyl monomers

    SciTech Connect (OSTI)

    Baugher, B.M.; Loy, D.A. [Sandia National Laboratories, Albuquerque, NM (United States)

    1996-10-01

    Hydrocarbon-bridged polysilsesquioxanes are prepared by the sol-gel polymerization of monomers with more than one trialkoxysilyl groups attached directly to the bridging group by Si-C bonds. While the effects of varying the length of the bridging group (length, rigidity, etc.), monomer concentration, and type of catalyst have been studied, the effect of different alkoxy ligands on the silicon atoms has not been investigated. For this study, 1, 6-bis(triethoxysilyl)hexane 1, 1,6-bis(trimethoxysilyl)hexane 2, and 1,6-bis(tripropoxysilyl)hexane 3 were polymerized under acidic and basic conditions in ethanol, methanol, and n-propanol respectively as well as tetrahydrofuran (THF). The resulting gels were processed to afford xerogels that were characterized by SEM, solid state {sup 13}C and {sup 29}Si Cross Polarization Magic Angle Spinning (CP MAS) NMR spectroscopy, nitrogen and CO{sub 2} sorption porosimetry.

  20. Comparison of bridged polysilsesquioxane xerogels prepared from methoxy- and ethoxy-silyl monomers

    SciTech Connect (OSTI)

    Loy, D.A.; Baugher, B.; Assink, R.A. [Sandia National Labs., Albuquerque, NM (United States); Prabakar, S. [Advanced Materials Lab., Albuquerque, NM (United States); Shea, K.J. [California Univ., Irvine, CA (United States). Dept. of Chemistry

    1994-12-31

    Hydrocarbon-bridged polysilsesquioxanes are prepared by the sol-gel polymerization of monomers with more than one trialkoxysilyl group attached directly to the bridging group by Si-C bonds. While the effects of varying the identity of the bridging group (length, rigidity, etc.), monomer concentration, and type of catalyst have been studied, the effect of different alkoxy ligands on the silicon atoms has not been investigated. For this study, 1, 6-- bis(triethoxysilyl)hexane 1 and 1, 6-bis(trimethoxysilyl)hexane 2 were polymerized under acidic and basic conditions in ethanol and methanol, respectively, and in tetrahydrofuran (THF). The resulting gels were processed to afford xerogels that were characterized by SEM, solid state {sup 13}C and {sup 29}Si Cross Polarization Magic Angle Spinning (CP MAS) NMR spectroscopy, and nitrogen sorption porosimetry.

  1. The Response of Long-Span Bridges to Low Frequency, Near-Fault Earthquake Ground Motions

    SciTech Connect (OSTI)

    McCallen, David; Astaneh-Asl, A.; Larsen, S.C.; Hutchings, Larry

    2009-02-27

    Historical seismic hazard characterizations did not include earthquake ground motion waveforms at frequencies below approximately 0.2 Hz (5 seconds period). This resulted from limitations in early strong motion instrumentation and signal processing techniques, a lack of measurements in the near-field of major earthquakes and therefore no observational awareness, and a delayed understanding in the engineering community of the potential significance of these types of motions. In recent years, there is a growing recognition of the relevance of near-fault, low frequency motions, particularly for long-period structures such as large bridges. This paper describes a computationally based study of the effects of low frequency (long-period) near-fault motions on long-span bridge response. The importance of inclusion of these types of motions for long span cable supported bridges is demonstrated using actual measured broad-band, near-fault motions from large earthquakes.

  2. OGLE-ing the Magellanic system: stellar populations in the Magellanic Bridge

    SciTech Connect (OSTI)

    Skowron, D. M.; Jacyszyn, A. M.; Udalski, A.; Szyma?ski, M. K.; Skowron, J.; Poleski, R.; Koz?owski, S.; Kubiak, M.; Pietrzy?ski, G.; Soszy?ski, I.; Mróz, P.; Pietrukowicz, P.; Ulaczyk, K.; Wyrzykowski, ?., E-mail: dszczyg@astrouw.edu.pl [Warsaw University Astronomical Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa (Poland)

    2014-11-10

    We report the discovery of a young stellar bridge that forms a continuous connection between the Magellanic Clouds. This finding is based on number density maps for stellar populations found in data gathered by OGLE-IV that fully cover over 270 deg{sup 2} of the sky in the Magellanic Bridge area. This is the most extensive optical survey of this region to date. We find that the young population is present mainly in the western half of the MBR, which, together with the newly discovered young population in the eastern Bridge, form a continuous stream of stars connecting both galaxies along ? ? –73.5 deg. The young population distribution is clumped, with one of the major densities close to the SMC and the other fairly isolated and located approximately mid-way between the Clouds, which we call the OGLE island. These overdensities are well matched by H I surface density contours, although the newly found young population in the eastern Bridge is offset by ?2 deg north from the highest H I density contour. We observe a continuity of red clump stars between the Magellanic Clouds which represent an intermediate-age population. Red clump stars are present mainly in the southern and central parts of the Magellanic Bridge, below its gaseous part, and their presence is reflected by a strong deviation from the radial density profiles of the two galaxies. This may indicate either a tidal stream of stars, or that the stellar halos of the two galaxies overlap. On the other hand, we do not observe such an overlap within an intermediate-age population represented by the top of the red giant branch and the asymptotic giant branch stars. We also see only minor mixing of the old populations of the Clouds in the southern part of the Bridge, represented by the lowest part of the red giant branch.

  3. Bridge scour evaluation with a one-dimensional water surface profile model 

    E-Print Network [OSTI]

    Zhou, Ke

    1990-01-01

    of scour at bridge crossings. The one ? dimensional ASM Watershed Model was modified snd utilized for the computation of hydraulic param- eters. As the result of this research, the applicable equations of local scour at bridges were verified... whose support lea. d me to the completion. Also, a. special note of thanks to all my friends for their support. vi TABLE OF CONTENTS Pa. ge I INTRODUCTION . I. 1 Genera. l I. 2 General Category of Scour I. 3 The Objectives of This Research II...

  4. Linear beam raster magnet driver based on H-bridge technique

    DOE Patents [OSTI]

    Sinkine, Nikolai I.; Yan, Chen; Apeldoorn, Cornelis; Dail, Jeffrey Glenn; Wojcik, Randolph Frank; Gunning, William

    2006-06-06

    An improved raster magnet driver for a linear particle beam is based on an H-bridge technique. Four branches of power HEXFETs form a two-by-two switch. Switching the HEXFETs in a predetermined order and at the right frequency produces a triangular current waveform. An H-bridge controller controls switching sequence and timing. The magnetic field of the coil follows the shape of the waveform and thus steers the beam using a triangular rather than a sinusoidal waveform. The system produces a raster pattern having a highly uniform raster density distribution, eliminates target heating from non-uniform raster density distributions, and produces higher levels of beam current.

  5. Cyclic intermediates isolated from the synthesis of alkylene-bridged polysilsesquioxanes

    SciTech Connect (OSTI)

    Carpenter, J.P.; Loy, D.A.; Shea, K.J.; Greaves, J.; Dorhout, P.K. [Sandia National Labs., Albuquerque, NM (United States)

    1997-12-31

    The hydrolysis and condensation of {sigma},{omega}-bis(triethoxysilyl)alkanes with acid catalysts normally leads to polymeric gels within a few hours. However, when the alkylene-bridge is short (ethyl, propyl, or butyl) gelation times of days or even months have been observed. Investigations into the initial condensation reactions revealed that highly condensed bicycle and tricyclic dimers are major products when the alkylene bridge is short. Some of these dimeric compounds have been isolated as crystalline solids. These intermediates have been characterized by {sup 1}H and {sup 13}C NMR and x-ray crystallography.

  6. 20K Hour GATEWAY Testing Results for I-35W Bridge Webinar

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy released a GATEWAY Demonstration report on the longer-term performance of an LED lighting system that was installed on the I-35W Bridge in Minneapolis in September 2008 and represents one of the country’s oldest continuously operated exterior LED lighting installations. Prior to installation, two of the LED luminaires were tested, along with a third luminaire that was not installed on the bridge but was tested for 6,000 hours in a laboratory for comparison purposes.

  7. EXTENDING THE SERVICE LIFE OF TIMBER RAILWAY BRIDGES A. S. Uppal 111 and S. H. Rizkalla 121

    E-Print Network [OSTI]

    . Its strength in compression, #12;2 shear and bending as well as its modulus of elasticity increase to extend the service life of existing railroad bridges. This paper outlines the various factors which playa into preventive, early remedial and major are discussed. The paper concludes that railroad bridges are cost

  8. Large Torsional Oscillations in Suspension Bridges Revisited: Fixing an Old Approximation Author(s): P. J. McKenna

    E-Print Network [OSTI]

    McKenna, Joseph

    Large Torsional Oscillations in Suspension Bridges Revisited: Fixing an Old Approximation Author to The American Mathematical Monthly. http://www.jstor.org #12;LargeTorsionalOscillations in SuspensionBridges,FredericD. Schwartzwrites "The Tacoma NarrowsBridgecollapse is technology'sversionoftheJFK assassi- nation. There

  9. Canal Wave Oscillations from the I-84 Bridge Expansion in Boise, Idaho William Rahmeyer, Ph.D., P.E.*

    E-Print Network [OSTI]

    Rahmeyer, William J.

    Canal Wave Oscillations from the I-84 Bridge Expansion in Boise, Idaho By William Rahmeyer, Ph experiencing an oscillating wave phenomena that originated from the bridge columns and caused erosion to study the wave phenomena and to determine what modifications to the columns or canal would be necessary

  10. CS Applications CS Math MR Applications MR Math MR Theory Proof Bridging Matrix Recovery Gaps using Manifolds

    E-Print Network [OSTI]

    Needell, Deanna

    CS Applications CS Math MR Applications MR Math MR Theory Proof Bridging Matrix Recovery Gaps using #12;CS Applications CS Math MR Applications MR Math MR Theory Proof Outline Compressed Sensing (CS manifold theory Deanna Needell Bridging Matrix Recovery Gaps using Manifolds #12;CS Applications CS Math MR

  11. IAJB 2005 -The 2005 FHwA Conference on Integral Abutment and Jointless Bridges Baltimore, Maryland, U.S.A. 16-18 March 2005

    E-Print Network [OSTI]

    Horvath, John S.

    IAJB 2005 - The 2005 FHwA Conference on Integral Abutment and Jointless Bridges Baltimore, MarylandA Conference on Integral Abutment and Jointless Bridges Baltimore, Maryland, U.S.A. 16-18 March 2005

  12. FDR con Section II Page 1 [This is my section of a 4-person arguing that the FDR Drive from the Battery to the Brookly Bridge should

    E-Print Network [OSTI]

    Wolfson, Sabina

    Drive viaduct with an at-grade roadway between the Battery and Brooklyn Bridge would worsen to replace the FDR Drive viaduct (from the Battery to the Brooklyn Bridge) would require accommodating

  13. TPCP: Black butt of Acacia mearnsii BLACK BUTT OF ACACIA MEARNSII

    E-Print Network [OSTI]

    . Limiting damage to the roots and bases of the trees is also advised. http://www.up.ac.za/academic/fabi/tpcp/pamphlets contact us. Back to INDEX of pamphlets... http://www.up.ac.za/academic/fabi/tpcp/pamphlets

  14. Abstract The concurrent goals of cement hydration are to percolate (bridge) the original

    E-Print Network [OSTI]

    Bentz, Dale P.

    Abstract The concurrent goals of cement hydration are to percolate (bridge) the original cement. The initial volume, particle size distribution, and flocculation/dispersion state of the cement particles have and the alkali content of the cement pastes. Finally, it is proposed that future efforts in this field

  15. SHEAR STRENGTHENING USING FRJ> SHEETS FOR A HIGHWAY BRIDGE IN MANITOHA, CANADA

    E-Print Network [OSTI]

    trucks demanded upgrading of a twenty-seven year old bridge in Winnipeg, Manitoba, Canada. Analysis increasingly heavier truck loads. The twin five- span continuous prestressed concrete structures were designed strengthening since they are light-weight, corrosion- free, and have a high tensile strength. When compared

  16. SHEAR STRENGTHENING USING CFRP SHEETS FOR A PRESTRESSED CONCRETE HIGHWAY BRIDGE

    E-Print Network [OSTI]

    Engineering Building, University ofManitoba, Winnipeg MB, Canada, R3T 5V6 SUMMARY The use of heavier trucks. is considering an upgrading of the Maryland bridge in response to the demand for heavier truck loads. The twin provide an excellent solution for shear strengthening since they are light-weight, corrosion

  17. Noise Bridges Dynamical Correlation and Topology in Coupled Oscillator Networks Jie Ren,1,2

    E-Print Network [OSTI]

    Li, Baowen

    Noise Bridges Dynamical Correlation and Topology in Coupled Oscillator Networks Jie Ren,1,2 Wen patterns in complex oscillator networks in the presence of noise. A striking finding is that noise leads], and noise scaling [9]. For the inverse problem, a basic question is whether sufficient topological

  18. Chapter 3: Software Architecture Modelling: Bridging Two Worlds Using Ergonomics and

    E-Print Network [OSTI]

    Nigay, Laurence

    Chapter 3: Software Architecture Modelling: Bridging Two Worlds Using Ergonomics and Software, · for verifying ergonomic and software properties, · for modifying and maintaining them in a productive way present a PAC-Amodeus software design solution of a WWW browser and its assessment in terms of ergonomic

  19. Evaluating Risk of Terrorist Attack on a Cable Stayed Bridge: A Probabilistic Structural

    E-Print Network [OSTI]

    Bhattacharya, Baidurya

    Evaluating Risk of Terrorist Attack on a Cable Stayed Bridge: A Probabilistic Structural Analysis and administrators are able to evaluate risks to infrastructure in their jurisdiction in a rational manner. This will enable them to take optimal actions to manage these risks given budgetary constraints. This paper

  20. A Bridging Model for Multi-Core Computing Leslie G. Valianta,,1

    E-Print Network [OSTI]

    , and would form the basis for implementation or compilation for particular machines. Our Multi-BSP model, and comparison sorting, there exist optimal portable algorithms in that sense, for all combinations of machine words: parallel algorithms, multi-core, bridging model, bulk synchronous. 1. Introduction Multi

  1. Advances in Modeling of Aerodynamic Forces on Bridge Xinzhong Chen1

    E-Print Network [OSTI]

    Kareem, Ahsan

    Advances in Modeling of Aerodynamic Forces on Bridge Decks Xinzhong Chen1 and Ahsan Kareem2 be pushing the envelope of the current linear aerodynamics which has successfully served thus far state-of-the-art in this field, may serve as a building block for developing new analysis tools

  2. FULL SCALE TESTING OF A BRIDGE DECK SLAB REINFORCED WITH CFRP K. Charieson1

    E-Print Network [OSTI]

    in Canada to incorporate carbon fibre reinforced polymer (CFRP) reinforcement into part ofthe concrete deck reinforced polymer (FRP) which could be carbon, glass or aramid fibres, provides an effective preventative bridges. Fibre reinforced polymer (FRP), offers an effective alternative to the use of conventional steel

  3. Bridging nanotechnological opportunities and construction needs A survey of nanoinnovation in Danish Construction

    E-Print Network [OSTI]

    Bridging nanotechnological opportunities and construction needs NanoByg A survey of nanoinnovation in Danish Construction Risø-R-1602 (EN) Risø National Laboratory Technical University of Denmark Roskilde in Danish construction Department: Systems Analysis Department Risø-R-1602 (EN) May 2007 ISSN 0106-2840 ISBN

  4. Bridging nanotechnological opportunities and construction needs A survey of nanoinnovation in Danish construction

    E-Print Network [OSTI]

    Bridging nanotechnological opportunities and construction needs NanoByg A survey of nanoinnovation in Danish construction Executive summary, English May 2007 #12;NanoByg Author: Maj Munch Andersen, Måns Molin Title: NanoByg ­ A survey of nanoinnovation in Danish construction ­ Executive summary English

  5. Bridging nanotechnological opportunities and construction needs A survey of nanoinnovation in Danish construction

    E-Print Network [OSTI]

    Bridging nanotechnological opportunities and construction needs NanoByg A survey of nanoinnovation in Danish construction Executive summary, Dansk Maj 2007 #12;NanoByg Author: Maj Munch Andersen, Måns Molin Title: NanoByg ­ A survey of nanoinnovation in Danish construction ­ Executive summary Dansk Department

  6. Graphene-enabled hybrid architectures for multiprocessors: bridging nanophotonics and nanoscale wireless communication

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Graphene-enabled hybrid architectures for multiprocessors: bridging nanophotonics and nanoscale components. In this paper, we do a first overview of the state-of-the-art in graphene and silicon network, and carrying light data flows. Keywords: Nanophotonics; Silicon-on-Insulator; Graphene

  7. Sowing Wind Science no sooner did the tacoma narrows bridge--the world's third

    E-Print Network [OSTI]

    Landweber, Laura

    i Sowing Wind Science no sooner did the tacoma narrows bridge--the world's third longest suspension in the wind. The pronounced heave, or more technically speaking the longitudinal undulation, caused some auto disappearing from sight as if traveling a hilly country road. by november 7, amid 39-mile-an-hour winds, the $6

  8. Bridging the Technical and Legal Divide: Information Retrieval Process Quality Standards for Counsel

    E-Print Network [OSTI]

    Oard, Doug

    1 Bridging the Technical and Legal Divide: Information Retrieval Process Quality Standards for Standardization's (ISO) recently announced intention to take up e-discovery standards, one technical expert opined that standards are necessary because "E-discovery is not a legal process. It's a technical and engineering

  9. SkypeMorph: Protocol Obfuscation for Tor Bridges Hooman Mohajeri Moghaddam Baiyu Li

    E-Print Network [OSTI]

    Goldberg, Ian

    SkypeMorph: Protocol Obfuscation for Tor Bridges Hooman Mohajeri Moghaddam Baiyu Li Mohammad {hmohajer,b5li,mderakhs,iang}@cs.uwaterloo.ca ABSTRACT The Tor network is designed to provide users with low- latency anonymous communications. Tor clients build cir- cuits with publicly listed relays to anonymously

  10. BRIDGE Risk Analyzer: A Collaborative Tool for Enhanced Risk Analysis in Crisis Situations1

    E-Print Network [OSTI]

    Stølen, Ketil

    BRIDGE Risk Analyzer: A Collaborative Tool for Enhanced Risk Analysis in Crisis Situations1 Mass to develop a collaborative tool to support risk analysis in crisis situations. The tool will be tightly facility. Keywords: Risk analysis, crisis management 1 Introduction Crisis management is a highly

  11. Form-Finding of Long Span Bridges with Continuum Topology Optimization

    E-Print Network [OSTI]

    Swan Jr., Colby Corson

    (Ground structures) #12;Applied loads SupportsStarting Design domain Elements of Continuum topology) 900 elements 60 elements (d) 200 elements Long-Span Bridge Problem "2-Supports" Design domain with 12 Engineering Center for Computer-Aided Design The University of Iowa #12;Objective Statement To develop

  12. Classroom BRIDGE: using collaborative public and desktop timelines to support activity awareness

    E-Print Network [OSTI]

    McCrickard, Scott

    and goal revision in collaborative, project-based middle school science. It integrates large- screen-device system, timeline interface INTRODUCTION Collaborating on a team project over a period of many weeks BRIDGE software is an evolution of our original Virtual School [6] software. This software has been

  13. Failure Mechanisms in Pipelines Bridging a Void J. G. Zornberg1

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    Failure Mechanisms in Pipelines Bridging a Void J. G. Zornberg1 , Y.D. Costa2 , and B.S. Bueno3 1 program is being conducted to evaluate the failure mechanisms of pipelines subjected to a localized loss will allow the design of reinforced soil systems suitable to mitigate damage in pipelines. The experimental

  14. Editorial Introduction to the Special Issue on Bridging Theory and Practice

    E-Print Network [OSTI]

    Poli, Riccardo

    Editorial Introduction to the Special Issue on Bridging Theory and Practice 1 Theory and Practice Don't Talk to Each Other There is a growing gap between theory and practice. This is the result Theory and Practice" workshop series (Riolo and Worzel, 2003; O'Reilly et al., 2004; Yu et al., 2005

  15. Resonance behavior of liquid bridges under axial and lateral oscillating total body forces

    E-Print Network [OSTI]

    Taylor, Philip L.

    bridges that are magnetically levitated in air against gravity are subjected to either axial or lateral of the technique of time-varying magnetic levitation is that problems associated with the influence of the outer is a simple configuration that is ideal for the study of static properties (Meseguer 1983; Meseguer and Sanz

  16. Experimentally Validated Compatibility Strut and Tie Modeling of Reinforced Concrete Bridge Piers 

    E-Print Network [OSTI]

    Scott, Reece Melby

    2010-10-12

    A compatibility-based strut-and-tie model C-STM is proposed for analyzing deep beams and disturbed regions with particular emphasis on reinforced concrete bridge piers. In addition to the normal strut-and-tie force equilibrium requirements the model...

  17. Which Set of Bridging Faults Should Test Compilers Target ? 1 Sreejit Chakravarty Paul J. Thadikaran

    E-Print Network [OSTI]

    Krovi, Venkat

    Which Set of Bridging Faults Should Test Compilers Target ? 1 Sreejit Chakravarty Paul J ( SUBMITTED TO IEEE INTERNATIONAL TEST CONFERENCE, 1996 ) ABSTRACT Existing test compilers target stuck ``layout analysis''. We argue that this is not a feasible option for test compilers thereby making a case

  18. DAMAGE IDENTIFICATION IN A BENCHMARK CABLE-STAYED BRIDGE USING THE INTERPOLATION METHOD

    E-Print Network [OSTI]

    Boyer, Edmond

    DAMAGE IDENTIFICATION IN A BENCHMARK CABLE-STAYED BRIDGE USING THE INTERPOLATION METHOD Marco mariagiuseppina.limongelli@polimi.it ABSTRACT In this paper the damage localization algorithm based on Operational Deformed Shapes (ODS) and known as Interpolation Damage Detection Method (IDDM), is applied

  19. Damage Identification for Bridges Using Frequency and Time Domain Data Amir Ardalan Mosavi1

    E-Print Network [OSTI]

    Damage Identification for Bridges Using Frequency and Time Domain Data Amir Ardalan Mosavi1 Error predictions of the ARX model x , y Standard deviations of the prediction errors DF,H , DF,D Damage Features calculated for healthy and damaged conditions of the structure f(DF,H) , g(DF,D) Probability

  20. CIV498 Design Project 2016 Project Title: Design of Reinforced Concrete Bridges

    E-Print Network [OSTI]

    Toronto, University of

    with respect to structural and durability design criteria. This design problem involves structural and disadvantages of each type. 3. Design Criteria: This exercise should provide basic understanding of reinforcedCIV498 Design Project 2016 Project Title: Design of Reinforced Concrete Bridges INSTRUCTORS

  1. Bridging the Gap between Variability in Client Application and Database Schema

    E-Print Network [OSTI]

    Kaestner, Christian

    to database schema elements complicate development and evolution. This may even hinder application developersBridging the Gap between Variability in Client Application and Database Schema Norbert Siegmund1,ckaestne,rosenmue,saake}@ovgu.de, 2 florian.heidenreich@tu-dresden.de, 3 apel@uni-passau.de Abstract: Database schemas are used

  2. STRUCTURAL HEALTH MONITORING OF A SMART COMPOSITE BRIDGE USING GUIDED WAVES AND ACOUSTIC EMISSION TECHNIQUES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    STRUCTURAL HEALTH MONITORING OF A SMART COMPOSITE BRIDGE USING GUIDED WAVES AND ACOUSTIC EMISSION with the development of a structural health monitoring (SHM) system implemented on a composite footbridge during in France to serve as demonstrators. KEYWORDS : Structural Health Monitoring, Acoustic emission, Guided

  3. Toward a State of Good Repair for Railroad Bridges through Structural Health Monitoring

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    Toward a State of Good Repair for Railroad Bridges through Structural Health Monitoring NUTC of this research is to add a new tool to the asset management toolbox: structural health monitoring, particularly is Structural Health Monitoring (SHM)? SHM is process of intelligently collecting data from sensors on critical

  4. Bridging the Rural/Urban Digital Divide Ph.D. Candidate

    E-Print Network [OSTI]

    repercussions on the future stability of rural communities will occur. The Internet can be a powerfulBridging the Rural/Urban Digital Divide Kofi Poku Ph.D. Candidate Richard P. Vlosky, Ph, and overall, Internet access rates for rural households now approximate those of households across the country

  5. Bridging the Gap: Automated Steady Scaffoldings for 3D Printing Jrmie Dumas

    E-Print Network [OSTI]

    Lévy, Bruno

    Bridging the Gap: Automated Steady Scaffoldings for 3D Printing Jérémie Dumas Université de Figure 1: The upper leg of the Poppy robot (www.poppy-project.org) cannot be 3D printed on low cost FDM usage. Abstract Fused Filament Fabrication (FFF) is the process of 3D printing ob- jects from melted

  6. Dr. Carlos Gntner: Patent & Liaison Manager LifeSciences, MBM ScienceBridge GmbH

    E-Print Network [OSTI]

    Gollisch, Tim

    Dr. Carlos Güntner: Patent & Liaison Manager LifeSciences, MBM ScienceBridge GmbH "From idea to patent - commercializing inventions successfully" Monday, 15 April 2013, 16:00 - 17:30h Ernst is the status of Master and Ph.D. Students? - Publication vs. Patent? How to manage both? - Strategy

  7. EQUIVALENT STATIC WIND LOAD DISTRIBUTION OF COUPLED BUFFETING RESPONSE OF BRIDGES

    E-Print Network [OSTI]

    Kareem, Ahsan

    EQUIVALENT STATIC WIND LOAD DISTRIBUTION OF COUPLED BUFFETING RESPONSE OF BRIDGES Xinzhong Chen in terms of the equivalent static wind loads. The gust response factor (GRF) approach that assumes the equivalent static loads having the same distribution of the mean static wind loads is widely used

  8. Metric Relativity and the Dynamical Bridge: highlights of Riemannian geometry in physics

    E-Print Network [OSTI]

    Novello, Mario

    2015-01-01

    We present an overview of recent developments concerning modifications of the geometry of space-time to describe various physical processes of interactions among classical and quantum configurations. We concentrate in two main lines of research: the Metric Relativity and the Dynamical Bridge.

  9. Capillary Bridge Formation and Breakage: A Test to Characterize Antiadhesive Surfaces

    E-Print Network [OSTI]

    Laurianne Vagharchakian; Frederic Restagno; Liliane Leger

    2009-04-07

    In order to characterize very weak adhesive surfaces, we have developed a quantitative test inspired by the Johnson, Kendall, and Roberts adhesion test for soft adhesives, which relies on the formation and then the rupture of a capillary bridge between the surface to be tested and a liquid bath. Both the shape and the kinetics of breakage of the capillary bridge for various coatings put into contact with liquids of various viscosities and surface tensions have been studied. Several pull off regimes can be distinguished. For low pull off velocities, a quasi-static regime is observed, well described by capillary equations and sensitive to the hysteresis of the contact angle of the fluid on the coating. Above a critical pull off velocity that depends on the fluid viscosity, a dynamic regime is observed, characterized by the formation of a flat pancake of fluid on the coating that recedes more slowly than the capillary bridge itself. After the breakage of the capillary bridge, a small drop can remain attached to the surface. The volume of this drop depends on the dynamical regime and is strongly affected by very small differences between the coatings. The aptitude of this test in characterizing very weakly adhesive surfaces is exemplified by a comparison between three different perfluorinated coatings.

  10. Metric Relativity and the Dynamical Bridge: highlights of Riemannian geometry in physics

    E-Print Network [OSTI]

    Mario Novello; Eduardo Bittencourt

    2015-08-21

    We present an overview of recent developments concerning modifications of the geometry of space-time to describe various physical processes of interactions among classical and quantum configurations. We concentrate in two main lines of research: the Metric Relativity and the Dynamical Bridge.

  11. MULTI-HAZARD (BLAST, SEISMIC, TSUNAMIS, COLLISION) RESISTANT BRIDGE PIERS David Keller

    E-Print Network [OSTI]

    Bruneau, Michel

    MULTI-HAZARD (BLAST, SEISMIC, TSUNAMIS, COLLISION) RESISTANT BRIDGE PIERS David Keller Structural piers retrofitted with steel jackets, both designed to be ductile from a seismic design perspective. LS the numerous and sometimes contradicting demands from the multiple hazards at the onset of the design process

  12. Querying Big Data: Bridging Theory and Practice Wenfei Fana,b

    E-Print Network [OSTI]

    Fan, Wenfei

    Querying Big Data: Bridging Theory and Practice Wenfei Fana,b , Jinpeng Huaib aInternational Research Center on Big Data, Beihang University, Beijing, No.37 XueYuan Road, 100083, Beijing, China Abstract Big data introduces challenges to query answering, from theory to practice. A number of questions

  13. Graphene-enabled hybrid architectures for multiprocessors: bridging nanophotonics and nanoscale

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Graphene-enabled hybrid architectures for multiprocessors: bridging nanophotonics and nanoscale components. In this paper, we do a first overview of the state-of-the-art in graphene and silicon network, and carrying light data flows. Keywords: Nanophotonics; Silicon-on-Insulator; Graphene

  14. Seliem, Lucier, Rizkalla, and Zia 2006 CBC BEHAVIOR OF CONCRETE BRIDGE DECKS REINFORCED WITH HIGH-

    E-Print Network [OSTI]

    of MMFX steel for bridge decks. The paper also presents the effect of bending of MMFX steel bars on its of this new steel is also presented. The paper also assesses the effect of bending of MMFX steel bars on its Department of Civil Engineering, North Carolina State University ABSTRACT This paper describes the behavior

  15. Efficient Longitudinal Seismic Fragility Assessment of a Multispan Continuous Steel Bridge on Liquefiable Soils

    E-Print Network [OSTI]

    Padgett, Jamie Ellen

    on Liquefiable Soils Bayram Aygün, S.M.ASCE1 ; Leonardo Dueñas-Osorio, A.M.ASCE2 ; Jamie E. Padgett, A.M.ASCE3 even more important when considering complex phenomena such as soil liquefaction under seismic hazards. Currently, two approaches are widely used for bridge reliability estimation under soil failure conditions

  16. LONG TERM DURABILITY OF CARBON FRP COMPOSITES APPLIED TO RC BRIDGES

    E-Print Network [OSTI]

    Ring, Terry A.

    and non-destructive testing the long-term durability of the carbon fiber reinforced polymer (CFRP) composite system, used as a seismic retrofit of State Street Bridge on Interstate 80. Non-destructive bents, and monitoring the daily measurements. Destructive testing was performed on several different

  17. Comparative Study of Power Factor Correction Converters For Single Phase Half-Bridge Inverters

    E-Print Network [OSTI]

    Tolbert, Leon M.

    of input current harmonic distortion and en- ergy efficiency. I. INTRODUCTION Uninterruptible power supplyComparative Study of Power Factor Correction Converters For Single Phase Half-Bridge Inverters Gui an isolation transformer, and sinu- soidal input currents if a power factor correction (PFC) con- verter

  18. Temporary Bridging Agents for Use in Drilling and Completions of EGS

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Develop materials or systems that bridge to seal or divert flow from fractures existing while drilling EGS wells or in injection formation and that eventually decompose thereby leaving the fractures unsealed and undamaged.

  19. Vibration-induced inelastic effects in the electron transport through multisite molecular bridges

    E-Print Network [OSTI]

    Natalya A. Zimbovskaya; Maija M. Kuklja

    2009-04-29

    We theoretically analyzed inelastic effects in the electron transport through molecular junctions originating from electron-vibron interactions. The molecular bridge was simulated by a periodic chain of identical interacting hydrogen-like atoms providing a set of energy states for the electron tunneling. To avoid difficulties inevitably arising when advanced computational techniques are employed to study inelastic electron transport through multilevel bridges, we propose and develop a semiphenomenological approach. The latter is based on the Buttiker's dephasing model within the scattering matrix formalism. The advantage of the proposed approach is that it allows to analytically study various inelastic effects on the conduction through molecular junctions including multilevel bridges. Here, we apply this approach to describe features associated with electron energy transfer to vibrational phonons which appear in the inelastic tunneling spectra of electrons. In the particular case of a single level bridge our results agree with those obtained by self-consitent calculations carried out within the nonequilibrium Green's functions method validating the usefulness of the suggested approach.

  20. Wireless Structural Monitoring of the Geumdang Bridge using Resolution Enhancing Signal Conditioning

    E-Print Network [OSTI]

    Lynch, Jerome P.

    Wireless Structural Monitoring of the Geumdang Bridge using Resolution Enhancing Signal deployment of wireless sensors is a necessary first-step towards validating their performance within the complex and challenging environments posed by civil structures. In this study, a wireless structural

  1. Computing Lyapunov exponents on a Stiefel manifold by Thomas J. Bridges and Sebastian Reich

    E-Print Network [OSTI]

    Reich, Sebastian

    Computing Lyapunov exponents on a Stiefel manifold by Thomas J. Bridges and Sebastian Reich The problem of numerical computation of a few Lyapunov exponents of #12;nite-dimensional dynamical systems computes one, many or all Lyapunov exponents of a continuous dynamical system by time integration, discrete

  2. Thermal resistance of bridged cracks in fiber-reinforced ceramic John Dryden

    E-Print Network [OSTI]

    Zok, Frank

    -reinforced ceramic composites obtain high toughness is through the de- velopment of multiple matrix cracksThermal resistance of bridged cracks in fiber-reinforced ceramic composites John Dryden Department in a fiber-reinforced ceramic composite is analyzed. The problem is cast in terms of a unit cell comprising

  3. Glide of hollow fibers at the bridging stage of fracture in ceramic nanocomposites

    E-Print Network [OSTI]

    Ovid'ko Ilya A.

    . Consider a model fibrous nanocomposite consisting of ceramic matrix and unidirectional continuous nano ceramic composites [11­15]. In the case of nanocomposites, the bridging regime has specific features due opening in nano- composites: (1) the fibers are stretched inside the crack but do not glide in the fiber­matrix

  4. Studies of electronic communication between dimolybdenum cores joined by various bridges 

    E-Print Network [OSTI]

    Jin, Jiayi

    2009-05-15

    A series of metal-organic complexes which all contain two bridged dimolybdenum cores were synthesized and studied. Common building blocks involved in this series of syntheses include Mo2(DAniF)3(O2CCH3) (DAniF = N, ...

  5. Bridging the Gap Between BusinessBridging the Gap Between BusinessBridging the Gap Between BusinessBridging the Gap Between Business Process Models and ServiceProcess Models and ServiceProcess Models and ServiceProcess Models and Service

    E-Print Network [OSTI]

    Ulm, Universität

    Bridging the Gap Between Business Process Models and ServiceProcess Models and ServiceProcess Models and Service of the major reasons for this deficiency is the gap that exists between business process models on the one hand a flexible approach for aligning business process models with workflow specifications. In order to maintain

  6. A method to bridge the gap between affordance formalisation and visual simulation in virtual environment

    E-Print Network [OSTI]

    Frénod, Emmanuel

    of the emergence of interaction between a human or animal agent and some relevant patterns of sensorial informationA method to bridge the gap between affordance formalisation and visual simulation in virtual to a concrete simulation of the model within a Virtual Environment. This simulation makes the direct observation

  7. EFFECT OF VISCOUS GRAIN BRIDGING ON CYCLIC FATIGUE-CRACK GROWTH IN MONOLITHIC CERAMICS

    E-Print Network [OSTI]

    Ritchie, Robert

    EFFECT OF VISCOUS GRAIN BRIDGING ON CYCLIC FATIGUE-CRACK GROWTH IN MONOLITHIC CERAMICS AT ELEVATED crack under cyclic loading conditions at elevated temperatures in high-toughness, monolithic ceramics the frequency and temperature sensitivity not gen- erally observed in ceramics at room temperature. Solutions

  8. DESIGN GUIDELINES FOR BRIDGE DECK SLABS REINFORCED by CFRP and GFRP

    E-Print Network [OSTI]

    Hassan 1, Amr Abdelrahman 2, Gamil Tadros 3, and Sami Rizkalla 4 Summary The use of carbon and glass the service life of bridge deck slabs. The linear properties of FRPs up to failure and their relatively low elastic modulus and strain at ultimate have raised concerns regarding their use as reinforcements

  9. Bridge Seismic Retrofitting Practices in the Central and Southeastern United States

    E-Print Network [OSTI]

    Padgett, Jamie Ellen

    ; Reginald DesRoches, M.ASCE2 ; and Jamie E. Padgett, A.M.ASCE3 Abstract: This paper conducts a detailed: 10.1061/ ASCE BE.1943-5592.0000128 CE Database subject headings: Bridges; Earthquakes; Rehabilitation through or end up in the region, it is estimated that over $1.58 trillion dollars of freight originate

  10. Effect of Corrosion on the Seismic Response of a Single-Bent, Reinforced Concrete Bridge 

    E-Print Network [OSTI]

    Harvat, Jessica

    2010-07-14

    . Stiffness Reductions ................................................................................. 49? Table 17. Bridge Periods (sec) ................................................................................. 58? Table 18. MLE Statistics... taxpayers billions of dollars each year. In 2005, the American Society of Civil Engineers (ASCE) estimated that the United States needed to invest $1.6 trillion dollars into its infrastructure system over the following 5 years; additionally...

  11. TECHNOLOGY ASSESSMENT AND GLOBALIZATION bridges vol. 16, December 2007 / Pielke's Perspective

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    of the worthless fish, or if they were lucky, sell it for about five cents per pound to be processed into pet food1 of 3 TECHNOLOGY ASSESSMENT AND GLOBALIZATION bridges vol. 16, December 2007 / Pielke of technology in globalization and the role of technology assessment in our efforts to manage the effects

  12. Resolving Bridging References in Unrestricted Text Massimo Poesio, Renata Vieira and Simone Teufel

    E-Print Network [OSTI]

    us- ing a taxonomy derived from the proposals of (Clark, 1977; Hawkins, 1978; Prince, 1981; Fraurud, 1990; Prince, 1992). In the taxonomy used in that study, we defined bridging references as those uses%) as larger situation/unfamiliar (Hawkins, 1978) (Prince's discourse new (Prince, 1992)); the remaining

  13. IMPACT OF 2008 HURRICANE IKE ON BRIDGE INFRASTRUCTURE IN THE HOUSTON/GALVESTON REGION

    E-Print Network [OSTI]

    Padgett, Jamie Ellen

    Accepted M anuscript N otC opyedited IMPACT OF 2008 HURRICANE IKE ON BRIDGE INFRASTRUCTURE produced by Hurricane Ike in 2008 caused notable damage to the transportation infrastructure in the Houston in the Houston/Galveston region observed after Hurricane Ike, with comparisons to empirical evidence from past

  14. Surface Salt Bridges, Double-Mutant Cycles, and Protein Stability: an Experimental and Computational Analysis of the Interaction of the Asp 23 Side Chain with the

    E-Print Network [OSTI]

    Snow, Christopher

    Surface Salt Bridges, Double-Mutant Cycles, and Protein Stability: an Experimental-mutant cycles have been used to investigate a salt bridge in the N-terminal domain of the protein L9. Aspartic solvent-exposed salt bridge with the protonated N-terminus of the protein. Mutations were studied in which

  15. Traditional techniques for bridge evaluation are founded on design-based deterministic equations that use limited site-specific data; they do not

    E-Print Network [OSTI]

    Bhattacharya, Baidurya

    Traditional techniques for bridge evaluation are founded on design-based deterministic equations) addresses some of these shortcomings and allows bridge rating in a manner consistent with load rating of bridges using site-specific in-service structural response data in an LRFR format is presented

  16. *jerlynch@umich.edu; phone 1 734 615 5290; http://www-personal.engin.umich.edu/~jerlynch Local-based damage detection of cyclically loaded bridge piers using

    E-Print Network [OSTI]

    Lynch, Jerome P.

    -based damage detection of cyclically loaded bridge piers using wireless sensing units Tsung-Chin Hou, Jerome P of Michigan, Ann Arbor, MI 48109 ABSTRACT Concrete bridge piers are a common structural element employed in the design of bridges and elevated roadways. In order to ensure adequate behavior under earthquake

  17. Mutation of the Salt Bridge-forming Residues in the ETV6-SAM Domain Interface Blocks ETV6-NTRK3-induced

    E-Print Network [OSTI]

    McIntosh, Lawrence P.

    Mutation of the Salt Bridge-forming Residues in the ETV6-SAM Domain Interface Blocks ETV6-NTRK3 transformation. Results: Mutation of a salt bridge at the SAM polymer interface weakens SAM polymerization- physicalandcellularbiologicaltechniquesthatmutationofLys-99, which participates in a salt bridge at the SAM polymer interface, reducesself

  18. Modeling, Analysis, and Control of Demand Response Resources

    E-Print Network [OSTI]

    Mathieu, Johanna L.

    2012-01-01

    G. Corey. Energy storage for the electricity grid: BenefitsG. Corey. Energy storage for the electricity grid: Benefits

  19. Modeling, Analysis, and Control of Demand Response Resources

    E-Print Network [OSTI]

    Mathieu, Johanna L.

    2013-01-01

    G. Corey. Energy storage for the electricity grid: BenefitsG. Corey. Energy storage for the electricity grid: Benefits

  20. Structural Health Monitoring Studies of the Alamosa Canyon and I-40 Bridges

    SciTech Connect (OSTI)

    Charles R. Farrar; Phillip J. Cornwell; Scott W. Doebling; Michael B. Prime

    2000-07-01

    From 1994 to 1997 internal research grants from Los Alamos National Laboratory's Laboratory Direct Research and Development (LDRD) office were used to fund an effort aimed at studying global vibration-based damage detection methods. To support this work, several field tests of the Alamosa Canyon Bridge have been performed to study various aspects of applying vibration-based damage detection methods to a real world in situ structure. This report summarizes the data that has been collected from the various vibration tests performed on the Alamosa Canyon Bridge, analyses of these data, and the results that have been obtained. Initially, it was the investigators' intent to introduce various types of damage into this bridge and study several vibration-based damage detection methods. The feasibility of continuously monitoring such a structure for the onset of damage was also going to be studied. However, the restrictions that the damage must be relatively benign or repairable made it difficult to take the damage identification portion of the study to completion. Subsequently, this study focused on quantifying the variability in identified modal parameters caused by sources other than damage. These sources include variability in testing procedures, variability in test conditions, and environmental variability. These variabilities must be understood and their influence on identified modal properties quantified before vibration-based damage detection can be applied with unambiguous results. Quantifying the variability in the identified modal parameters led to the development of statistical analysis procedures that can be applied to the experimental modal analysis results. It is the authors' opinion that these statistical analysis procedures represent one of the major contributions of these studies to the vibration-based damage detection field. Another significant contribution that came from this portion of the study was the extension of a strain-energy-based damage detection method originally developed for structures that exhibit beam-bending response to structures that exhibit plate-like bending or bending in two directions. In addition, based on lessons learned from the Alamosa Canyon Bridge test, data from the I-40 Bridge tests have been re-analyzed using the statistical analysis procedures developed as part of this study. The application of these statistical procedures to the I-40 Bridge test results gives particular insight into how statistical analysis can be used to enhance the vibration-based damage detection process.