National Library of Energy BETA

Sample records for horst blocks sedimentary

  1. John Horst | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guidephysics_today_article.pdf MoreEnergyJohn Coggin -John Horst -

  2. Horst and Graben | 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 FarmHorst and Graben

  3. High Precision Radiometric Dating of Sedimentary Materials

    SciTech Connect (OSTI)

    Hanson, G. N.

    2006-09-19

    To develop field, petrographic and geochemical criteria to allow high precision U-Pb dating of sedimentary minerals within rapidly deposited sequences of carbonate and clastic rocks.

  4. Geological Sciences 330 Fall 2007 Sedimentary Geology

    E-Print Network [OSTI]

    . Principles of sedimentology and stratigraphy. 4th edition. Prentice Hall, Upper Saddle River, NJ. 662 pp: Principles of Stratigraphy and Sedimentology (1) Week 2 10 Sept Sedimentary Particles: Weathering (13, 15 & 16) 28 Nov Integrated Stratigraphy and Sedimentology Lab 10: Well-log Interpretation Week 14

  5. Block theory Fusion systems

    E-Print Network [OSTI]

    Block theory Fusion systems Results Block theory and fusion systems Benjamin Sambale Jena 02. 05. 2011 Benjamin Sambale Block theory and fusion systems #12;Block theory Fusion systems Results Blocks closed field of characteristic p. Benjamin Sambale Block theory and fusion systems #12;Block theory

  6. SEDIMENTARY SEDIMENTARY

    E-Print Network [OSTI]

    Hagadorn, Whitey

    :aleontology:aleontology:aleontology:aleontology: Thomas W. Dignes Councilor for Sedimentology:Councilor for Sedimentology:Councilor for Sedimentology:Councilor for Sedimentology:Councilor for Sedimentology: Cathy J. Busby International Councilor:International Councilor Sarg Councilor for Sedimentology:Councilor for Sedimentology:Councilor for Sedimentology

  7. SEDIMENTARY SEDIMENTARY

    E-Print Network [OSTI]

    Dornbos, Stephen Q.

    & Consulting, Inc.; Energy & Geoscience Institute; ExxonMobil; Unocal Corporation; Ventex Oil & Gas, Inc. We Investment Committee Meeting 11:30am-12:30 SEPM Investment Lunch 12:30-2:30pm SEPM Investment Meeting 3pm-5pm

  8. Sedimentary parameters of upper Barataria Bay, Louisiana 

    E-Print Network [OSTI]

    Siegert, Rudolf B

    1961-01-01

    SEDIMENTARY PARAMETERS OF UPPER BARATARIA BAY, LOUISIANA A Thesis Rudolf Bernhardt Siegert Submitted to the Graduate School of the Agricultural snd Mechanical College of Texas in partial fulfillment of the reGulremente for the d. agree... of MASTER OF SCIENCE August 1961 Ma)or Sub)ect GeologP SEDYIKNTARY PARAI'ZTEHS OF DT'PBR BARATARIA BAY, LOUISIANA A Thesis By Rudolf Bernhardt Siegert Approved as to style and content by: Chairman of C 'tice Bea of Department or Student Advisor...

  9. The geomechanics of CO2 storage in deep sedimentary formations

    E-Print Network [OSTI]

    Rutqvist, J.

    2013-01-01

    The geomechanics of CO 2 storage in deep sedimentaryThis paper provides a review of the geomechanics andmodeling of geomechanics associated with geologic carbon

  10. DECOUPLING AND BLOCK PRECONDITIONING FOR SEDIMENTARY BASIN SIMULATIONS IN TEMIS3D

    E-Print Network [OSTI]

    Bath, University of

    is then in the second stage preconditioned by eÆcient methods like AMG. The third step #12;nally consists in \\recoupling major oil companies. Ideally a basin simulator should span the entire process of source rock burial, hydrocarbon generation, expulsion, migration into a potential trap, and assessment of trap integrity

  11. Experimental deformation of multilithologic specimens simulating sedimentary facies changes 

    E-Print Network [OSTI]

    Dyke, Lawrence Dana

    1976-01-01

    EXPERIMENTAL DEFORMATION OF MULTILITHOLOGIC SPECIMENS SIMULATING SEDIMENTARY FACIES CHANGES A Thesis by LAWRENCE DANA DYKE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1976 Major Subject: Geology EXPERIMENTAL DEFORMATION OF MULTILITHOLOGIC SPECIMENS SIMULATING SEDIMENTARY FACIES CHANGES A Thesis by LAWRENCE DANA DYKE Approved as to style and content by: (Chai n Committee) (Head...

  12. Building, block, street : residential block design

    E-Print Network [OSTI]

    Kamell, Elizabeth N. (Elizabeth Natanya)

    1996-01-01

    Late twentieth-century housing, formed by economic and internally generated functional problems rather than by limitations imposed by traditional street pattern and block size, is fundamentally anti-urban. Modern American ...

  13. NATURAL GAS RESOURCES IN DEEP SEDIMENTARY BASINS

    SciTech Connect (OSTI)

    Thaddeus S. Dyman; Troy Cook; Robert A. Crovelli; Allison A. Henry; Timothy C. Hester; Ronald C. Johnson; Michael D. Lewan; Vito F. Nuccio; James W. Schmoker; Dennis B. Riggin; Christopher J. Schenk

    2002-02-05

    From a geological perspective, deep natural gas resources are generally defined as resources occurring in reservoirs at or below 15,000 feet, whereas ultra-deep gas occurs below 25,000 feet. From an operational point of view, ''deep'' is often thought of in a relative sense based on the geologic and engineering knowledge of gas (and oil) resources in a particular area. Deep gas can be found in either conventionally-trapped or unconventional basin-center accumulations that are essentially large single fields having spatial dimensions often exceeding those of conventional fields. Exploration for deep conventional and unconventional basin-center natural gas resources deserves special attention because these resources are widespread and occur in diverse geologic environments. In 1995, the U.S. Geological Survey estimated that 939 TCF of technically recoverable natural gas remained to be discovered or was part of reserve appreciation from known fields in the onshore areas and State waters of the United. Of this USGS resource, nearly 114 trillion cubic feet (Tcf) of technically-recoverable gas remains to be discovered from deep sedimentary basins. Worldwide estimates of deep gas are also high. The U.S. Geological Survey World Petroleum Assessment 2000 Project recently estimated a world mean undiscovered conventional gas resource outside the U.S. of 844 Tcf below 4.5 km (about 15,000 feet). Less is known about the origins of deep gas than about the origins of gas at shallower depths because fewer wells have been drilled into the deeper portions of many basins. Some of the many factors contributing to the origin of deep gas include the thermal stability of methane, the role of water and non-hydrocarbon gases in natural gas generation, porosity loss with increasing thermal maturity, the kinetics of deep gas generation, thermal cracking of oil to gas, and source rock potential based on thermal maturity and kerogen type. Recent experimental simulations using laboratory pyrolysis methods have provided much information on the origins of deep gas. Technologic problems are one of the greatest challenges to deep drilling. Problems associated with overcoming hostile drilling environments (e.g. high temperatures and pressures, and acid gases such as CO{sub 2} and H{sub 2}S) for successful well completion, present the greatest obstacles to drilling, evaluating, and developing deep gas fields. Even though the overall success ratio for deep wells is about 50 percent, a lack of geological and geophysical information such as reservoir quality, trap development, and gas composition continues to be a major barrier to deep gas exploration. Results of recent finding-cost studies by depth interval for the onshore U.S. indicate that, on average, deep wells cost nearly 10 times more to drill than shallow wells, but well costs and gas recoveries vary widely among different gas plays in different basins. Based on an analysis of natural gas assessments, many topical areas hold significant promise for future exploration and development. One such area involves re-evaluating and assessing hypothetical unconventional basin-center gas plays. Poorly-understood basin-center gas plays could contain significant deep undiscovered technically-recoverable gas resources.

  14. Parametric Analysis of the Factors Controlling the Costs of Sedimentary Geothermal Systems - Preliminary Results (Poster)

    SciTech Connect (OSTI)

    Augustine, C.

    2013-10-01

    Parametric analysis of the factors controlling the costs of sedimentary geothermal systems was carried out using a modified version of the Geothermal Electricity Technology Evaluation Model (GETEM). The sedimentary system modeled assumed production from and injection into a single sedimentary formation.

  15. Mesoporous Block Copolymer Battery Separators

    E-Print Network [OSTI]

    Wong, David Tunmin

    2012-01-01

    Xiangyun Song helped me with battery experiments. I want toMesoporous Block Copolymer Battery Separators by DavidMesoporous Block Copolymer Battery Separators by David

  16. Mesoporous Block Copolymer Battery Separators

    E-Print Network [OSTI]

    Wong, David Tunmin

    2012-01-01

    image. Chapter 2 – Relationship Between Morphology and Conductivity of Block- Copolymer Based Battery

  17. DOE workshop: Sedimentary systems, aqueous and organic geochemistry

    SciTech Connect (OSTI)

    Not Available

    1993-07-01

    A DOE workshop on sedimentary systems, aqueous and organic geochemistry was held July 15-16, 1993 at Lawrence Berkeley Laboratory. Papers were organized into several sections: Fundamental Properties, containing papers on the thermodynamics of brines, minerals and aqueous electrolyte solutions; Geochemical Transport, covering 3-D imaging of drill core samples, hydrothermal geochemistry, chemical interactions in hydrocarbon reservoirs, fluid flow model application, among others; Rock-Water Interactions, with presentations on stable isotope systematics of fluid/rock interaction, fluid flow and petotectonic evolution, grain boundary transport, sulfur incorporation, tracers in geologic reservoirs, geothermal controls on oil-reservoir evolution, and mineral hydrolysis kinetics; Organic Geochemistry covered new methods for constraining time of hydrocarbon migration, kinetic models of petroleum formation, mudstones in burial diagenesis, compound-specific carbon isotope analysis of petroleums, stability of natural gas, sulfur in sedimentary organic matter, organic geochemistry of deep ocean sediments, direct speciation of metal by optical spectroscopies; and lastly, Sedimentary Systems, covering sequence stratigraphy, seismic reflectors and diagenetic changes in carbonates, geochemistry and origin of regional dolomites, and evidence of large comet or asteroid impacts at extinction boundaries.

  18. Pressure analysis of the hydromechanical fracture behaviour in stimulated tight sedimentary geothermal reservoirs

    E-Print Network [OSTI]

    Wessling, S.

    2009-01-01

    The future of Geothermal Energy. Massachusetts Institute ofthe exploitation of geothermal energy from such rocks. Wemethod to extract geothermal energy from tight sedimentary

  19. Pressure analysis of the hydromechanical fracture behaviour in stimulated tight sedimentary geothermal reservoirs

    E-Print Network [OSTI]

    Wessling, S.

    2009-01-01

    in jointed and layered rocks in geothermal fields.of Volcanology and Geothermal Research 116, 257- 278.fracturing in a sedimentary geothermal reservoir: Results

  20. Pressure analysis of the hydromechanical fracture behaviour in stimulated tight sedimentary geothermal reservoirs

    E-Print Network [OSTI]

    Wessling, S.

    2009-01-01

    geothermal energy production because it uses a single borehole,geothermal energy from tight sedimentary reservoirs. It uses a single borehole,

  1. Lyme Carditis with Transient Complete Heart Block

    E-Print Network [OSTI]

    Dolbec, Katherine W D; Higgins, George L; Saucier, John R

    2010-01-01

    demonstrating complete heart block Volume XI, no . 2 : Maywith Transient Complete Heart Block Katherine W. D. Dolbecsecond-degree to first-degree heart block before complete

  2. Eikonalization of Conformal Blocks

    E-Print Network [OSTI]

    A. Liam Fitzpatrick; Jared Kaplan; Matthew T. Walters; Junpu Wang

    2015-09-10

    Classical field configurations such as the Coulomb potential and Schwarzschild solution are built from the t-channel exchange of many light degrees of freedom. We study the CFT analog of this phenomenon, which we term the `eikonalization' of conformal blocks. We show that when an operator $T$ appears in the OPE $\\mathcal{O}(x) \\mathcal{O}(0)$, then the large spin $\\ell$ Fock space states $[TT \\cdots T]_{\\ell}$ also appear in this OPE with a computable coefficient. The sum over the exchange of these Fock space states in an $\\langle \\mathcal{O} \\mathcal{O} \\mathcal{O} \\mathcal{O} \\rangle$ correlator build the classical `$T$ field' in the dual AdS description. In some limits the sum of all Fock space exchanges can be represented as the exponential of a single $T$ exchange in the 4-pt correlator of $\\mathcal{O}$. Our results should be useful for systematizing $1/\\ell$ perturbation theory in general CFTs and simplifying the computation of large spin OPE coefficients. As examples we obtain the leading $\\log \\ell$ dependence of Fock space conformal block coefficients, and we directly compute the OPE coefficients of the simplest `triple-trace' operators.

  3. Eikonalization of conformal blocks

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

    Fitzpatrick, A. Liam; Kaplan, Jared; Walters, Matthew T.; Wang, Junpu

    2015-09-03

    Classical field configurations such as the Coulomb potential and Schwarzschild solution are built from the t-channel exchange of many light degrees of freedom. We study the CFT analog of this phenomenon, which we term the 'eikonalization' of conformal blocks. We show that when an operator T appears in the OPE ?(x)?(0), then the large spin Fock space states [TT···T]? also appear in this OPE with a computable coefficient. The sum over the exchange of these Fock space states in an correlator build the classical 'T field' in the dual AdS description. In some limits the sum of all Fockmore »space exchanges can be represented as the exponential of a single T exchange in the 4-pt correlator of O. Our results should be useful for systematizing 1/? perturbation theory in general CFTs and simplifying the computation of large spin OPE coefficients. As examples we obtain the leading log ? dependence of Fock space conformal block coefficients, and we directly compute the OPE coefficients of the simplest ‘triple-trace’ operators.« less

  4. JOURNAL OF SEDIMENTARY RESEARCH, VOL. 74, NO. 5, SEPTEMBER, 2004, P. 730735 Copyright 2004, SEPM (Society for Sedimentary Geology) 1527-1404/04/074-730/$03.00

    E-Print Network [OSTI]

    Haszeldine, Stuart

    (Society for Sedimentary Geology) 1527-1404/04/074-730/$03.00 RESEARCH METHODS PAPERS QUANTIFICATION, Edinburgh, EH14 4AS, U.K. 2 Department of Geology and Geophysics, University of Edinburgh, Grant Institute

  5. Salt Control on Sedimentary Processes in Early Pleistocene: Ship Shoal South Addition Blocks 349-358, Gulf of Mexico. 

    E-Print Network [OSTI]

    Syarif, Munji

    2004-09-30

    ) through recent salt and associated sediments reveals the evolution of a supralobal basin in the study area. The basin depocenter shifted from the northeastern part to the center of the study area through time. A small, bulb-shaped, salt-stock structure...

  6. Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean

    E-Print Network [OSTI]

    Demouchy, Sylvie

    Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean), Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean) in the water columns of the Arabian Sea (AS) and the eastern North and South Pacific oceans (ENP; ESP) holds

  7. MAGNETIC ANISOTROPY AS AN AID TO IDENTIFYING CRM AND DRM IN RED SEDIMENTARY ROCKS

    E-Print Network [OSTI]

    Utrecht, Universiteit

    the remanence anisotropy of hematite-bearing sedimentary rocks. It also shows that very high magnetic fieldsMAGNETIC ANISOTROPY AS AN AID TO IDENTIFYING CRM AND DRM IN RED SEDIMENTARY ROCKS K.P. KODAMA1 June, 2004; Accepted: August 25, 2004 ABSTRACT To further evaluate the potential of magnetic anisotropy

  8. Building Random Trees from Blocks

    E-Print Network [OSTI]

    2012-09-18

    Sep 18, 2012 ... We have a finite collection of unlabeled, rooted, nonplanar building ... We use these as building blocks of an unlabeled, rooted, nonplanar tree.

  9. Flemish fieldstone: unravelling lithological differences and diagenesis Research Unit: Sedimentary Geology and Engineering Geology

    E-Print Network [OSTI]

    Gent, Universiteit

    Flemish fieldstone: unravelling lithological differences and diagenesis Research Unit: Sedimentary Geology and Engineering Geology Topic: Fieldstone, natural stone, diagenesis, microscopy with a great interest in sedimentation processes and diagenesis, in petrology and Flemish stratigraphy

  10. Hydrologic and geochemical controls on soluble benzene migration in sedimentary basins

    E-Print Network [OSTI]

    Schieber, Juergen

    , 1999). These anomalies have been attributed to vertical migration of (separate phase) BTEX gases from that do not intersect with the typical geothermal gradients of sedimentary basins (Aljoe et al. 1986

  11. Quaternary International 90 (2002) 87115 Sedimentary and stratigraphic evidence for subglacial flooding,

    E-Print Network [OSTI]

    Fisher, Timothy G.

    2002-01-01

    the geomorphology, stratigraphy, and sedimentology of the study area mainly within Jackson and Calhoun Counties. Sedimentary descriptions from 14 gravel pits indicate a consistent stratigraphy across a width of 15 km

  12. Energy Efficiency and Conservation Block Grant Program

    E-Print Network [OSTI]

    Pennycook, Steve

    Energy Efficiency and Conservation Block Grant Program Program Evaluation - Overview & Approach DNV KEMA Energy & Sustainability #12;Energy Efficiency and Conservation Block Grant Program Evaluation;Energy Efficiency and Conservation Block Grant Program Evaluation Primary Objectives of the EECBG

  13. Block copolymer electrolytes for lithium batteries

    E-Print Network [OSTI]

    Hudson, William Rodgers

    2011-01-01

    copolymer electrolyte, poly(styrene-block-ethylene oxide), (micrograph of lamellar poly(styrene-block-ethylene oxide) (electrolyte is poly(styrene-block-ethylene oxide) (55/45 wt/

  14. Rotationally invariant multilevel block codes 

    E-Print Network [OSTI]

    Kulandaivelu, Anita

    1993-01-01

    The objective of this thesis is to evaluate the performance of block codes that are designed to be rotationally invariant, in a multilevel coding scheme, over a channel modelled to be white gaussian noise. Also, the use ...

  15. ABC -A Block Cipher Dieter Schmidt

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    it on computers with limited resources like smart cards. Nevertheless, this article is an attempt to build a block. It has a block size of 256 bit and key length of 512 bit. The building blocks of the cipher are from therefore prudent, to build cipher systems from building blocks using that size. The backdraw

  16. Multiple sulphur and iron isotope composition of detrital pyrite in Archaean sedimentary rocks: A new tool for provenance analysis

    E-Print Network [OSTI]

    Bekker, Andrey

    are a common componentof conglomerate- hosted gold and uranium deposits of the Mesoarchaean Witwatersrand basin. Rounded pyrites from Meso- to Neoarchaean gold and uranium-bearing strata of South Africa are derived from matter-rich shales, sedimentary exhalites and volcanogenic massive sulphide deposits. Some sedimentary

  17. Coal is a combustible sedimentary rock and a valuable economic resource. During the Pennsylvanian Period

    E-Print Network [OSTI]

    Polly, David

    Coal is a combustible sedimentary rock and a valuable economic resource. During the Pennsylvanian of years produced the bituminous coals currently found in southwestern Indiana. Bituminous coals in Indiana currently ranks as the seventh-largest coal-producing state in the nation and has an estimated 17.57 billion

  18. Effect of mineral phase transitions on sedimentary basin subsidence and uplift

    E-Print Network [OSTI]

    Podladchikov, Yuri

    Effect of mineral phase transitions on sedimentary basin subsidence and uplift Boris J.P. Kausa influence rock density, which is a major parameter affecting lithosphere dynamics and basin subsidence are incorporated into one- and two-dimensional kinematic models of basin subsidence. The results demonstrate that

  19. Tracing bottom water oxygenation with sedimentary Mn/Fe ratios in Lake Zurich, Switzerland

    E-Print Network [OSTI]

    Gilli, Adrian

    Tracing bottom water oxygenation with sedimentary Mn/Fe ratios in Lake Zurich, Switzerland and Management, Seestrasse 79, CH-6047 Kastanienbaum, Switzerland b ETH Zurich, Institute for Biogeochemistry and Pollution Dynamics, Universitaetstrasse 16, CH-8092 Zurich, Switzerland c ETH Zurich, Geological Institute

  20. ORIGINAL PAPER Sedimentary pellets as an ice-cover proxy in a High Arctic

    E-Print Network [OSTI]

    Vincent, Warwick F.

    ORIGINAL PAPER Sedimentary pellets as an ice-cover proxy in a High Arctic ice-covered lake Jessica-cover extent and dynamics on this perennially ice-covered, High Arctic lake. These pellets are interpreted growth. The pellets remain frozen in the ice until a summer or series of summers with reduced ice cover

  1. A model of suboxic sedimentary diagenesis suitable for automatic tuning and gridded global domains

    E-Print Network [OSTI]

    Scherer, Norbert F.

    tuned to minimize the misfit to observations from 53 sedimentary locations throughout the ocean at predicting organic carbon concentration, depth of NO3 À penetration, and pore water Fe2+ , and less so for Mn ocean, with sediment area as a function of overlying oxygen concentration and average depth related

  2. Fluid flow and CO2fluidmineral interactions during CO2-storage in sedimentary basins

    E-Print Network [OSTI]

    Cambridge, University of

    mineral dissolution rates. Observations from CO2-EOR exper- iments and natural analogues suggestFluid flow and CO2­fluid­mineral interactions during CO2-storage in sedimentary basins Niko Kampman Natural CO2 analogues Modelling the progress of geochemical processes in CO2 storage sites is frustrated

  3. Author's personal copy The sedimentary fluxes of polycyclic aromatic hydrocarbons in the

    E-Print Network [OSTI]

    Zheng, Mei

    Author's personal copy The sedimentary fluxes of polycyclic aromatic hydrocarbons in the Yangtze aromatic hydrocarbons (PAHs) in two 210 Pb dated sediment cores from the coastal East China Sea, strongly flux; Source; Yangtze River Estuary coastal sea 1. Introduction Polycyclic aromatic hydrocarbons (PAHs

  4. Stratified precambrian rocks (sedimentary?) beneath the midcontinent region of the US. Final technical report

    SciTech Connect (OSTI)

    Hauser, E.C.

    1993-02-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence and its ultimate lateral extent are unknown. However, the occurrences of Precambrian layered rocks on both the COCORP profiles and reprocessed industry seismic reflection data from the region lie within regions of generally low amplitude and low frequency aeromagnetic anomaly, suggesting an even greater distribution. Unmetamorphosed Precambrian sedimentary rocks have been recovered from drill holes in southwest Ohio and adjacent northern Kentucky and southwesternmost Indiana. These Precambrian sedimentary rocks lie above and may be part of an underlying package of strongly layered rocks imaged on a short and shallow seismic profile in southwest Ohio. These Precambrian sedimentary rocks were originally viewed as part of a late Precambrian (Keweenawan?) rift; however, in light of Grenville foreland structures seen on the COCORP profile to the north in west central Ohio, these Precambrian strata may (1) be part of a heretofore unrecognized Grenville foreland basin, or (2) indicate that unmetamorphosed Precambrian sedimentary material may be an important constituent of the layered rocks observed on COCORP beneath southern Illinois and Indiana.

  5. Stratified precambrian rocks (sedimentary ) beneath the midcontinent region of the US

    SciTech Connect (OSTI)

    Hauser, E.C.

    1993-02-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence and its ultimate lateral extent are unknown. However, the occurrences of Precambrian layered rocks on both the COCORP profiles and reprocessed industry seismic reflection data from the region lie within regions of generally low amplitude and low frequency aeromagnetic anomaly, suggesting an even greater distribution. Unmetamorphosed Precambrian sedimentary rocks have been recovered from drill holes in southwest Ohio and adjacent northern Kentucky and southwesternmost Indiana. These Precambrian sedimentary rocks lie above and may be part of an underlying package of strongly layered rocks imaged on a short and shallow seismic profile in southwest Ohio. These Precambrian sedimentary rocks were originally viewed as part of a late Precambrian (Keweenawan ) rift; however, in light of Grenville foreland structures seen on the COCORP profile to the north in west central Ohio, these Precambrian strata may (1) be part of a heretofore unrecognized Grenville foreland basin, or (2) indicate that unmetamorphosed Precambrian sedimentary material may be an important constituent of the layered rocks observed on COCORP beneath southern Illinois and Indiana.

  6. Triple oxygen isotope variations in sedimentary rocks Naomi E. Levin a,

    E-Print Network [OSTI]

    . However, recent oxygen isotope measurements of terrestrial rocks, minerals and waters also reveal common for various equilibrium and kinetic mechanisms. Here we pres- ent triple oxygen isotope data on sedimentary; Pack and Herwartz, 2014), but they are gener- ally overlooked in analysis of terrestrial rocks

  7. Method for making block siloxane copolymers

    DOE Patents [OSTI]

    Butler, N.L.; Jessop, E.S.; Kolb, J.R.

    1981-02-25

    A method for synthesizing block polysiloxane copolymers is disclosed. Diorganoscyclosiloxanes and an end-blocking compound are interacted in the presence of a ring opening polymerization catalyst, producing a blocked prepolymer. The prepolymer is then interacted with a silanediol, resulting in condensation polymerization of the prepolymers. A second end-blocking compound is subsequently introduced to end-cap the polymers and copolymers formed from the condensation polymerization.

  8. JOURNAL OF SEDIMENTARY RESEARCH, VOL. 70, NO. 1, JANUARY, 2000, P. 227239 Copyright 2000, SEPM (Society for Sedimentary Geology) 1073-130X/00/070-227/$03.00

    E-Print Network [OSTI]

    Haszeldine, Stuart

    (Society for Sedimentary Geology) 1073-130X/00/070-227/$03.00 ANKERITE CEMENTATION IN DEEPLY BURIED.K. e-mail: j.hendry@qub.ac.uk 2 Department of Geology and Geophysics, University of Edinburgh, Grant

  9. BUILDING CONNECTION SOUTH BLOCK: ACCESS VIA MAIN ENTRANCE

    E-Print Network [OSTI]

    Shoubridge, Eric

    ENTRANCE ELEVATOR WASHROOMS BUILDING CONNECTION SOUTH BLOCK: ACCESS VIA MAIN ENTRANCE NORTH BLOCK: ACCESS VIA MAIN ENTRANCE WEST BLOCK: ALL LEVELS ARE ACCESSIBLE BY PUBLIC ELEVATOR SOUTH BLOCK MAIN ENTRANCE NORTH BLOCK: ACCESS VIA MAIN ENTRANCE WEST BLOCK: ALL LEVELS ARE ACCESSIBLE BY PUBLIC

  10. Sedimentary structures and textures of Rio Orinoco channel sands, Venezuela and Colombia

    SciTech Connect (OSTI)

    McKee, E.D.

    1989-01-01

    The majority of the sedimentary structures in the channel sands of the Orinoco River are planar cross-strata that are products of sand-wave deposition. Sands in these deposits are mostly medium-grained. Eolian dunes form on top of the sand waves when they are exposed to the trade winds at low river stages. The windblown sands are typically fine-grained.

  11. Estimate of the Geothermal Energy Resource in the Major Sedimentary Basins in the United States (Presentation)

    SciTech Connect (OSTI)

    Esposito, A.; Porro, C.; Augustine, C.; Roberts, B.

    2012-09-01

    Because most sedimentary basins have been explored for oil and gas, well logs, temperatures at depth, and reservoir properties such as depth to basement and formation thickness are well known. The availability of this data reduces exploration risk and allows development of geologic exploration models for each basin. This study estimates the magnitude of recoverable geothermal energy from 15 major known U.S. sedimentary basins and ranks these basins relative to their potential. The total available thermal resource for each basin was estimated using the volumetric heat-in-place method originally proposed by (Muffler, 1979). A qualitative recovery factor was determined for each basin based on data on flow volume, hydrothermal recharge, and vertical and horizontal permeability. Total sedimentary thickness maps, stratigraphic columns, cross sections, and temperature gradient information was gathered for each basin from published articles, USGS reports, and state geological survey reports. When published data were insufficient, thermal gradients and reservoir properties were derived from oil and gas well logs obtained on oil and gas commission databases. Basin stratigraphy, structural history, and groundwater circulation patterns were studied in order to develop a model that estimates resource size, temperature distribution, and a probable quantitative recovery factor.

  12. Estimate of Geothermal Energy Resource in Major U.S. Sedimentary Basins (Presentation)

    SciTech Connect (OSTI)

    Porro, C.; Augustine, C.

    2012-04-01

    This study estimates the magnitude of geothermal energy from fifteen major known US sedimentary basins and ranks these basins relative to their potential. Because most sedimentary basins have been explored for oil and gas, well logs, temperatures at depth, and reservoir properties are known. This reduces exploration risk and allows development of geologic exploration models for each basin as well as a relative assessment of geologic risk elements for each play. The total available thermal resource for each basin was estimated using the volumetric heat-in-place method originally proposed by Muffler (USGS). Total sedimentary thickness maps, stratigraphic columns, cross sections, and temperature gradient Information were gathered for each basin from published articles, USGS reports, and state geological survey reports. When published data was insufficient, thermal gradients and reservoir properties were derived from oil and gas well logs obtained on oil and gas commission websites. Basin stratigraphy, structural history, and groundwater circulation patterns were studied in order to develop a model that estimates resource size and temperature distribution, and to qualitatively assess reservoir productivity.

  13. Advanced Horizontal Well Recirculation Systems for Geothermal Energy Recovery in Sedimentary and Crystalline Formations

    SciTech Connect (OSTI)

    Bruno, Mike S.; Detwiler, Russell L.; Lao, Kang; Serajian, Vahid; Elkhoury, Jean; Diessl, Julia; White, Nicky

    2012-12-13

    There is increased recognition that geothermal energy resources are more widespread than previously thought, with potential for providing a significant amount of sustainable clean energy worldwide. Recent advances in drilling, completion, and production technology from the oil and gas industry can now be applied to unlock vast new geothermal resources, with some estimates for potential electricity generation from geothermal energy now on the order of 2 million megawatts. The primary objectives of this DOE research effort are to develop and document optimum design configurations and operating practices to produce geothermal power from hot permeable sedimentary and crystalline formations using advanced horizontal well recirculation systems. During Phase I of this research project Terralog Technologies USA and The University of California, Irvine (UCI), have completed preliminary investigations and documentation of advanced design concepts for paired horizontal well recirculation systems, optimally configured for geothermal energy recovery in permeable sedimentary and crystalline formations of varying structure and material properties. We have also identified significant geologic resources appropriate for application of such technology. The main challenge for such recirculation systems is to optimize both the design configuration and the operating practices for cost-effective geothermal energy recovery. These will be strongly influenced by sedimentary formation properties, including thickness and dip, temperature, thermal conductivity, heat capacity, permeability, and porosity; and by working fluid properties.

  14. Tenure Track Position in Sedimentary Geology San Francisco State University's Department of Earth & Climate Sciences (http://tornado.sfsu.edu)

    E-Print Network [OSTI]

    sedimentology, sedimentation and tectonics, environmental sedimentology, or the sedimentary interests or experience broadly in sedimentology. Candidates are preferred who have systems approach. A detailed position description is available at http://tornado.sfsu.edu/PositionAnnouncement/TenureTrackSedimentology

  15. Linear block codes for block fading channels based on Hadamard matrices 

    E-Print Network [OSTI]

    Spyrou, Spyros

    2006-04-12

    We investigate the creation of linear block codes using Hadamard matrices for block fading channels. The aforementioned codes are very easy to find and have bounded cross correlation spectrum. The optimality is with respect ...

  16. ECE 423: DSP for Communication Block Diagrams

    E-Print Network [OSTI]

    Connors, Daniel A.

    ECE 423: DSP for Communication Block Diagrams Discrete-time System Analysis/Design Sampling from high-level block diagram operation of a digital system such as microprocessor Simulation Analysis and Quantization DSP System Design/Characterization Real-time DSP Hardware and Software - Understands basic signal

  17. Manipulating and Visualizing Proteins Simon, Horst D. 59 BASIC...

    Office of Scientific and Technical Information (OSTI)

    ACIDS; CALIFORNIA; CHAINS; CHEMISTRY; DISEASES; FIBROSIS; FORECASTING; GENETICS; OPTIMIZATION; PROTEIN STRUCTURE; PROTEINS; QUEUES; SHAPE; SIMULATION PROTEIN STRUCTURE...

  18. PLANAR ROTATION SEQUENCES AND DOMAIN EXCHANGE HORST BRUNOTTE

    E-Print Network [OSTI]

    by the authors [1]. The proof in [5] is based on a torus map which is described in detail by Kouptsov, Lowenstein

  19. Microsoft PowerPoint - Horst Simon.BitstoBuidings2

    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 map shines light on darkMicroorganisms toPalladium/28/2008Hentschel

  20. Building Blocks for the Future of Manufacturing

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

    on Tumblr (Opens in new window) Building Blocks for the Future of Manufacturing Scott Smith 2011.05.04 An error occurred. Try watching this video on www.youtube.com, or enable...

  1. Commercial applications of block copolymer photonic gels

    E-Print Network [OSTI]

    Lou, Sally S

    2008-01-01

    Block copolymer photonic gels are a simple and easily processed material which responds rapidly to environmental stimuli through a color change. The diblock copolymer that forms the gel self-assembles into a lamellar ...

  2. Minimum Aberration Blocking Schemes for 128-Run Designs

    E-Print Network [OSTI]

    Xu, Hongquan; Mee, Robert W.

    2010-01-01

    Probability Plots for the Foundry Example q C q effectsDesign Implementation in a Foundry: A Case Study,” Qualitywith blocks. For this foundry experiment, blocks represented

  3. Minimum Aberration Blocking Schemes for 128-Run Designs

    E-Print Network [OSTI]

    Hongquan Xu; Robert W. Mee

    2011-01-01

    Probability Plots for the Foundry Example q C q effectsDesign Implementation in a Foundry: A Case Study,” Qualitywith blocks. For this foundry experiment, blocks represented

  4. Guidance for Energy Efficiency and Conservation Block Grant Program...

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

    for Energy Efficiency and Conservation Block Grant Program Recipients on Formula Grants Guidance for Energy Efficiency and Conservation Block Grant Program Recipients on Formula...

  5. Guidance for Energy Efficiency and Conservation Block Grant Recipients...

    Energy Savers [EERE]

    for Energy Efficiency and Conservation Block Grant Recipients on Program Evaluation Guidelines Guidance for Energy Efficiency and Conservation Block Grant Recipients on Program...

  6. Equity Effects of Increasing-Block Electricity Pricing

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01

    of increasing-block electricity rate schedules in the Unitedfrom the analysis of electricity rates, this approach toBlock Residential Electricity Rates in California The

  7. Solvothermal Thin Film Deposition of Electron Blocking Layers...

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

    Solvothermal Thin Film Deposition of Electron Blocking Layers Home > Research > ANSER Research Highlights > Solvothermal Thin Film Deposition of Electron Blocking Layers...

  8. Thermodynamics and Ionic Conductivity of Block Copolymer Electrolytes

    E-Print Network [OSTI]

    Wanakule, Nisita Sidra

    2010-01-01

    2.3 REFERENCES Flory, P.J. , Thermodynamics of high polymerBlock Copolymer Thermodynamics - Theory And Experiment.on block copolymer thermodynamics by measuring the changes

  9. State Energy Program and Energy Efficiency and Conservation Block...

    Energy Savers [EERE]

    Energy Efficiency and Conservation Block Grant Financing Program Guidance Grantee Letter Guidance For Energy Efficiency And Conservation Block Grant Grantees On Financing Programs...

  10. Scalable production of mechanically tunable block polymers from...

    Office of Scientific and Technical Information (OSTI)

    Scalable production of mechanically tunable block polymers from sugar Citation Details In-Document Search Title: Scalable production of mechanically tunable block polymers from...

  11. 100th anniversary special paper: Sedimentary mineral deposits and the evolution of earth's near-surface environments

    SciTech Connect (OSTI)

    Holland, H.D. [Harvard University, Cambridge, MA (United States). Dept. of Earth & Planetary Science

    2005-12-15

    The nature of sedimentary mineral deposits has evolved during Earth's history in concert with changes in the oxidation (redo) state of the ocean-atmosphere system, biological evolution, and the growing importance of geologically young accumulations of ore-grade material. There is now strong evidence that the atmosphere and the oceans were anoxic, or essentially anoxic, before 2.4 Ga. Banded iron formations (BIF) and the detrital uranium ores formed prior to 2.4 Ga are consistent with such a state. The period between 2.4 and 2.0 Ga is called the Great Oxidation Event by some. Its ores bear unmistakable marks of the presence of atmospheric O{sub 2}. Between 1.8 and 0.8 Ga the Earth system seems to have been remarkably stable. Sedimentary ore deposits of this period were influenced by the presence of O{sub 2}. BIF, sedimentary manganese, and phosphorites disappeared ca. 1.8 Ga, but sedimentary exhalative (SEDEX) deposits and unconformity-type uranium deposits flourished, and nonsulfide zinc deposits put in an appearance. The period between 0.8 Ga and the end of the Proterozoic at 0.54 Ga was as turbulent or more so than the Paleoproterozoic. BIF returned, as did sedimentary manganese deposits and phosphorites. A further rise in the O{sub 2} content of the atmosphere and an increase in the sulfate concentration of seawater during this period brought the composition of the atmosphere and of seawater close to their present redox state. The last 540 m.y. of Earth's history have seen the system pass through two supercycles of roughly equal length. Climate, the redox stratification of the oceans ocean mixing, and the nature of sedimentary ores were influenced by tectonically and volcanically driven changes during these supercycles. The evolution of the higher land plants gave rise to coal deposits and sandstone-type uranium ores and was important for the formation of bauxites.

  12. Deep crustal sediment study: Widespread precambrian layered rocks (sedimentary ?) beneath the US midcontinent

    SciTech Connect (OSTI)

    Hauser, E.C. [Cornell Univ., Ithaca, NY (United States)

    1992-05-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the U.S. midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1-3 times as thick as the overlying Paleozoic cover, but the origin of this sequence, its ultimate lateral extent, and resource potential are unknown. The objective of this project is to seek and reprocess seismic reflection data provided by industry from the U.S. midcontinent, and together with the COCORP deep reflection data and information from the scattered basement-penetrating drill holes, to begin to constrain the distribution, origin and evolution of this enigmatic layered sequence, particularly to evaluate if sedimentary material may be an important constituent (i.e., deep gas potential).

  13. Deep crustal sediment study: Widespread Precambrian layered rocks (Sedimentary ) beneath the US midcontinent

    SciTech Connect (OSTI)

    Hauser, E.C.

    1992-01-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence, its ultimate lateral extent, and resource potential are unknown. The objective of this project is to seek and reprocess seismic reflection data provided by industry from the US midcontinent and together with the COCORP deep reflection data and information from the scattered basement-penetrating drill holes, to begin to constrain the distribution, origin and evolution of this enigmatic layered sequence, particularly to evaluate if sedimentary material may be an important constituent (i.e., deep gas potential).

  14. Deep crustal sediment study: Widespread Precambrian layered rocks (Sedimentary ?) beneath the US midcontinent

    SciTech Connect (OSTI)

    Hauser, E.C.

    1992-06-01

    A thick sequence of layered rocks occurs beneath the Phanerozoic platform strata which blanket the US midcontinent. Observed on COCORP deep reflection data in southern Illinois and Indiana and in SW Oklahoma and adjacent Texas, this sequence is locally 1--3 times as thick as the overlying Paleozoic cover, but the origin of this sequence, its ultimate lateral extent, and resource potential are unknown. The objective of this project is to seek and reprocess seismic reflection data provided by industry from the US midcontinent and together with the COCORP deep reflection data and information from the scattered basement-penetrating drill holes, to begin to constrain the distribution, origin and evolution of this enigmatic layered sequence, particularly to evaluate if sedimentary material may be an important constituent (i.e., deep gas potential).

  15. Tax Resources for WSU GME Residents: H & R Block

    E-Print Network [OSTI]

    Finley Jr., Russell L.

    Tax Resources for WSU GME Residents: H & R Block 8610 E 8 Mile Rd Detroit (313) 372-9242 H & R Block 2601 Gratiot Ave Detroit (313) 372-9242 H & R Block 16862 Schaefer Hwy Detroit (313) 345-3885 H & R Blodk 16352 E Warren Ave Detroit (313) 885-9170 3 H & R Block 14418 Gratiot Ave Detroit (313) 371

  16. Cenozoic tectonic and sedimentary development of the North American-Caribbean transform boundary

    SciTech Connect (OSTI)

    Mann, P.; Debalko, D.; Grote, D.; Tyburski, S. (Univ. of Texas, Austin (USA))

    1990-05-01

    The North American-Caribbean plate boundary consists of strike-slip deformation extending 3,200 km from the Middle American volcanic arc in western Guatemala to the northern Lesser Antilles. The authors have reconstructed the complex sedimentary and tectonic evolution of this zone over the past 65 m.y. by integration of onshore geologic data and offshore geophysical data. Onshore geologic data consists mainly of detailed structural maps and biostratigraphic studies from uplifted sedimentary basins in Hispaniola and Jamaica. Offshore data consists of single and multichannel seismic profiles and side-scan sonar maps. Both onshore and offshore data have been synthesized into a set of computer-based, paleogeographic maps for the following Cenozoic periods: late Paleocene, middle Eocene, late Oligocene, early Miocene, late Miocene, Pliocene, and Holocene. These data allow them to generalize the tectonic evolution of the boundary into three stages. Stage 1: Paleocene to early Eocene rifting and bimodal volcanism associated with formation of the Cayman Trough pullapart basin. Nonmarine to shallow marine sedimentation was controlled by northwest-northeast-striking normal faults formed at a high angle to the direction of plate motion. Stage 2: middle Eocene to early Miocene strike-slip faulting across a broad, California Borderlands-type margin. Shallow marine to marine sedimentation was controlled by strike-slip faults parallel or at a low angle to the direction of plate motion. Stage 3: middle Miocene to present strike-slip faulting along a single major fault. Deep-marine sedimentation was controlled by a major strike-slip fault scarp formed approximately parallel to the direction of plate motion over most of the length of the boundary. Eustatic sea level effects are recognizable in all three stages.

  17. Late Eocene evolution of the iekdai Basin (central Turkey): Syn-sedimentary compression during microcontinentcontinent collision in central Anatolia

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Late Eocene evolution of the Çiçekdai Basin (central Turkey): Syn-sedimentary compression during, 06531 Ankara, Turkey b Paleomagnetic Laboratory "Fort Hoofddijk", Faculty of Geosciences, Utrecht) in central Turkey is one of the largest metamor- phic terranes in the Alpine orogen now preserved in a 250

  18. Sedimentary iron cycling and the origin and preservation of magnetization in platform carbonate muds, Andros Island, Bahamas

    E-Print Network [OSTI]

    Kirschvink, Joseph L.

    carbonates provide, in their stratigraphy and sedimentology, a local record of changing environmental of Pleistocene aeolianites in the Triple Goose Creek region of northwest Andros Island, Bahamas. Sedimentological directions and magnetofossil stratigraphies. © 2007 Published by Elsevier B.V. Keywords: sedimentary

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

    E-Print Network [OSTI]

    Texas at Austin, University of

    OTC 15118 Interpreting multicomponent seismic data in the Gulf of Mexico for shallow sedimentary a methodology for manually establishing tie points of depth-equivalent surfaces in P-P and P-S seismic data volumes derived from a 4-C ocean bottom seismic survey using seismic attribute volumes viewed in time

  20. 6 Department of Geology and Geophysics University of Wisconsin-Madison The Sedimentary Visualization Laboratory, room 408

    E-Print Network [OSTI]

    Johnson, Clark M.

    , Schumberger/ Geoquest, BP, ExxonMobil, Santa Fe Energy, Hampson-Russell, System Development Inc., and Seismic investigation of sedimentary basins and structures using 2-D and 3-D reflection seismic and well log data remodeling support, hardware, software, and data sets from the Weeks fund, the College of Letters and Science

  1. Architecture of the Middle Devonian Kvamshesten Group, western Norway: sedimentary response to deformation above a ramp-flat

    E-Print Network [OSTI]

    Andersen, Torgeir Bjørge

    Architecture of the Middle Devonian Kvamshesten Group, western Norway: sedimentary response. ANDERSEN 1 1Department of Geology, University of Oslo, Pb 1047 Blindern, 0316 Oslo, Norway 2present address." Geological Survey of Norway, 7491 Trondheim, Norway Abstract: The Mid-Devonian Kvamshesten basin in western

  2. Is it possible to use "twin cores" as a unique sedimentary record? An experimental design based on sediment color

    E-Print Network [OSTI]

    non destructive manipulation, gives quantitative information on the color and is used to describe that the acquisition of digital color is an affordable and non-destructive analysis that allows further investigation as a unique sedimentary record without any previous testing, at least in such transitional regions. 1

  3. An amalgamated meter-thick sedimentary package enabled by the 2011 Tohoku tsunami in El Garrapatero, Galapagos Islands

    E-Print Network [OSTI]

    Lynett, Patrick

    An amalgamated meter-thick sedimentary package enabled by the 2011 Tohoku tsunami in El Garrapatero: Received 23 April 2012 Available online 21 May 2013 Keywords: Tsunami deposits Coastal morphology Natural hazards Tsunamis and storms instigate sedimentological and geomorphological changes to the coastal system

  4. Sedimentary Rocks, Processes, and Environments Sediments are loose grains and chemical residues of earth materials, which include things such as

    E-Print Network [OSTI]

    Li, X. Rong

    Sedimentary Rocks, Processes, and Environments Sediments are loose grains and chemical residues, and rust (oxidized iron). Formation of Sediments All sediments have a source or provenance, a place and sediments. Erosion and Transportation of Sediments Weathered materials are transported via wind, water

  5. 14 Department of Geology and Geophysics University of Wisconsin-Madison W.H. TwenhofelPatriarch of Sedimentary Geology

    E-Print Network [OSTI]

    Johnson, Clark M.

    called sedimentology and our univer- sity was one of a very few centers of research and teaching. in clastic sedimentology (1958), Carl J. Bowser in sedimentary geochemistry (1964), and Lloyd C. Pray in carbonate sedimentology (1968). Cline died prema- turely in 1971 and the other three are now retired. Today

  6. Origin and evolution of the South Carpathians basement (Romania): a zircon and monazite geochronologic study of its Alpine sedimentary cover

    E-Print Network [OSTI]

    Holliday, Vance T.

    geochronologic study of its Alpine sedimentary cover Adriana M. Stoicaa , Mihai N. Duceaa,b , Relu D. Robana limited geochronological data on high-pressure metamorphic rocks from the Getic­ Supragetic basement. In addition to the timing of tectonic events in the Carpathian basement, geochronology of detrital minerals

  7. A novel power block for CSP systems

    SciTech Connect (OSTI)

    Mittelman, Gur; Epstein, Michael

    2010-10-15

    Concentrating Solar Thermal Power (CSP) and in particular parabolic trough, is a proven large-scale solar power technology. However, CSP cost is not yet competitive with conventional alternatives unless subsidized. Current CSP plants typically include a condensing steam cycle power block which was preferably designed for a continuous operation and higher operating conditions and therefore, limits the overall plant cost effectiveness and deployment. The drawbacks of this power block are as follows: (i) no power generation during low insolation periods (ii) expensive, large condenser (typically water cooled) due to the poor extracted steam properties (high specific volume, sub-atmospheric pressure) and (iii) high installation and operation costs. In the current study, a different power block scheme is proposed to eliminate these obstacles. This power block includes a top Rankine cycle with a back pressure steam turbine and a bottoming Kalina cycle comprising another back pressure turbine and using ammonia-water mixture as a working fluid. The bottoming (moderate temperature) cycle allows power production during low insolation periods. Because of the superior ammonia-water vapor properties, the condensing system requirements are much less demanding and the operation costs are lowered. Accordingly, air cooled condensers can be used with lower economical penalty. Another advantage is that back pressure steam turbines have a less complex design than condensing steam turbines which make their costs lower. All of these improvements could make the combined cycle unit more cost effective. This unit can be applicable in both parabolic trough and central receiver (solar tower) plants. The potential advantage of the new power block is illustrated by a detailed techno-economical analysis of two 50 MW parabolic trough power plants, comparing between the standard and the novel power block. The results indicate that the proposed plant suggests a 4-11% electricity cost saving. (author)

  8. Self-doped microphase separated block copolymer electrolyte

    DOE Patents [OSTI]

    Mayes, Anne M. (Waltham, MA); Sadoway, Donald R. (Waltham, MA); Banerjee, Pallab (Boston, MA); Soo, Philip (Cambridge, MA); Huang, Biying (Cambridge, MA)

    2002-01-01

    A polymer electrolyte includes a self-doped microphase separated block copolymer including at least one ionically conductive block and at least one second block that is immiscible in the ionically conductive block, an anion immobilized on the polymer electrolyte and a cationic species. The ionically conductive block provides a continuous ionically conductive pathway through the electrolyte. The electrolyte may be used as an electrolyte in an electrochemical cell.

  9. Exploring Energy Efficiency of Lightweight Block Ciphers

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Exploring Energy Efficiency of Lightweight Block Ciphers Subhadeep Banik1 , Andrey Bogdanov1 of r at which an r-round unrolled architecture for a cipher is likely to be most energy efficient. We of the metrics that define a good lightweight design is the energy consumed per unit operation of the algorithm

  10. Nuclear lamins: building blocks of nuclear architecture

    E-Print Network [OSTI]

    Goldman, Robert D.

    REVIEW Nuclear lamins: building blocks of nuclear architecture Robert D. Goldman,1,3,4 Yosef Biological Laboratory, Woods Hole, Massachusetts 02543, USA Nuclear lamins were initially identified as the major components of the nuclear lamina, a proteinaceous layer found at the interface between chromatin

  11. Nanostructured Block Copolymer Dry Electrolyte Ayan Ghosha,

    E-Print Network [OSTI]

    Rubloff, Gary W.

    Nanostructured Block Copolymer Dry Electrolyte Ayan Ghosha, * and Peter Kofinasb,z a Department, College Park, Maryland 20742, USA We report on the synthesis and characterization of a solid-state polymer electrolyte with enhanced lithium transport based on a self-assembled diblock copolymer. The diblock copolymer

  12. Deformation behavior of cylindrical block copolymer bicrystals : pathway to understanding block copolymer grain boundaries

    E-Print Network [OSTI]

    Wanakamol, Panitarn

    2006-01-01

    Model bicrystals made by adhering pieces of near-single-crystal styrene-isoprene-styrene (SIS) cylindrical block copolymer (BCP), produced by a roll-casting process; yield various types of pure tilt grain boundaries. The ...

  13. Poly(cyclohexylethylene)-block-poly(ethylene oxide) block polymers for metal oxide templating

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

    Schulze, Morgan W.; Sinturel, Christophe; Hillmyer, Marc A.

    2015-09-01

    A series of poly(cyclohexylethylene)-block-poly(ethylene oxide) (CEO) diblock copolymers were synthesized through tandem anionic polymerizations and heterogeneous catalytic hydrogenation. Solvent-annealed CEO diblock films were used to template dense arrays of inorganic oxide nanodots via simple spin coating of an inorganic precursor solution atop the ordered film. The substantial chemical dissimilarity of the two blocks enables (i) selective inclusion of the inorganic precursor within the PEO domain and (ii) the formation of exceptionally small feature sizes due to a relatively large interaction parameter estimated from mean-field analysis of the order–disorder transition temperatures of compositionally symmetric samples. UV/ozone treatment following incorporation produces anmore »ordered arrangement of oxide nanodots and simultaneously removes the block polymer template. However, we report the smallest particles (6 ± 1 nm) templated from a selective precursor insertion method to date using a block polymer scaffold.« less

  14. The geomechanics of CO{sub 2} storage in deep sedimentary formations

    SciTech Connect (OSTI)

    Rutqvist, J.

    2011-11-01

    This paper provides a review of the geomechanics and modeling of geomechanics associated with geologic carbon storage (GCS), focusing on storage in deep sedimentary formations, in particular saline aquifers. The paper first introduces the concept of storage in deep sedimentary formations, the geomechanical processes and issues related with such an operation, and the relevant geomechanical modeling tools. This is followed by a more detailed review of geomechanical aspects, including reservoir stress-strain and microseismicity, well integrity, caprock sealing performance, and the potential for fault reactivation and notable (felt) seismic events. Geomechanical observations at current GCS field deployments, mainly at the In Salah CO2 storage project in Algeria, are also integrated into the review. The In Salah project, with its injection into a relatively thin, low-permeability sandstone is an excellent analogue to the saline aquifers that might be used for large scale GCS in parts of Northwest Europe, the U.S. Midwest, and China. Some of the lessons learned at In Salah related to geomechanics are discussed, including how monitoring of geomechanical responses is used for detecting subsurface geomechanical changes and tracking fluid movements, and how such monitoring and geomechanical analyses have led to preventative changes in the injection parameters. Recently, the importance of geomechanics has become more widely recognized among GCS stakeholders, especially with respect to the potential for triggering notable (felt) seismic events and how such events could impact the long-term integrity of a CO{sub 2} repository (as well as how it could impact the public perception of GCS). As described in the paper, to date, no notable seismic event has been reported from any of the current CO{sub 2} storage projects, although some unfelt microseismic activities have been detected by geophones. However, potential future commercial GCS operations from large power plants will require injection at a much larger scale. For such largescale injections, a staged, learn-as-you-go approach is recommended, involving a gradual increase of injection rates combined with continuous monitoring of geomechanical changes, as well as siting beneath a multiple layered overburden for multiple flow barrier protection, should an unexpected deep fault reactivation occur.

  15. Evaluation of Five Sedimentary Rocks Other Than Salt for Geologic Repository Siting Purposes

    SciTech Connect (OSTI)

    Croff, A.G.; Lomenick, T.F.; Lowrie, R.S.; Stow, S.H.

    2003-11-15

    The US Department of Energy (DOE), in order to increase the diversity of rock types under consideration by the geologic disposal program, initiated the Sedimary ROck Program (SERP), whose immediate objectiv eis to evaluate five types of secimdnary rock - sandstone, chalk, carbonate rocks (limestone and dolostone), anhydrock, and shale - to determine the potential for siting a geologic repository. The evaluation of these five rock types, together with the ongoing salt studies, effectively results in the consideration of all types of relatively impermeable sedimentary rock for repository purposes. The results of this evaluation are expressed in terms of a ranking of the five rock types with respect to their potential to serve as a geologic repository host rock. This comparative evaluation was conducted on a non-site-specific basis, by use of generic information together with rock evaluation criteria (RECs) derived from the DOE siting guidelines for geologic repositories (CFR 1984). An information base relevant to rock evaluation using these RECs was developed in hydrology, geochemistry, rock characteristics (rock occurrences, thermal response, rock mechanics), natural resources, and rock dissolution. Evaluation against postclosure and preclosure RECs yielded a ranking of the five subject rocks with respect to their potential as repository host rocks. Shale was determined to be the most preferred of the five rock types, with sandstone a distant second, the carbonate rocks and anhydrock a more distant third, and chalk a relatively close fourth.

  16. Advanced Horizontal Well Recirculation Systems for Geothermal Energy Recovery in Sedimentary Formations

    SciTech Connect (OSTI)

    Mike Bruno; Russell L. Detwiler; Kang Lao; Vahid Serajian; Jean Elkhoury; Julia Diessl; Nicky White

    2012-09-30

    There is increased recognition that geothermal energy resources are more widespread than previously thought, with potential for providing a significant amount of sustainable clean energy worldwide. Recent advances in drilling, completion, and production technology from the oil and gas industry can now be applied to unlock vast new geothermal resources, with some estimates for potential electricity generation from geothermal energy now on the order of 2 million megawatts. Terralog USA, in collaboration with the University of California, Irvine (UCI), are currently investigating advanced design concepts for paired horizontal well recirculation systems, optimally configured for geothermal energy recovery in permeable sedimentary and crystalline formations of varying structure and material properties. This two-year research project, funded by the US Department of Energy, includes combined efforts for: 1) Resource characterization; 2) Small and large scale laboratory investigations; 3) Numerical simulation at both the laboratory and field scale; and 4) Engineering feasibility studies and economic evaluations. The research project is currently in its early stages. This paper summarizes our technical approach and preliminary findings related to potential resources, small-scale laboratory simulation, and supporting numerical simulation efforts.

  17. PROGRAMMING 2 Sensors and Servos: Building Blocks

    E-Print Network [OSTI]

    7/16/13 1 ARDUINO PROGRAMMING 2 Sensors and Servos: Building Blocks Analog vs. Digital Digital Wire up a Potentiometer Analog Inputs and Arduino int sensorPin = A2; // Analog pin 2 int ledPin = 13 to the LED } #12;7/16/13 4 Analog Inputs and Arduino int sensorPin = A2; // Analog pin 2 int ledPin = 13; int

  18. Rectangular Symmetry Morphologies in a Topographically Templated Block Copolymer

    E-Print Network [OSTI]

    Hannon, Adam F.

    Using an array of majority-block-functionalized posts makes it possible to locally control the self-assembly of a block copolymer and achieve several morphologies on a single substrate. A template consisting of a square ...

  19. Rutting and drainage design methodology for a concrete block pavement 

    E-Print Network [OSTI]

    Poduska, Daryl Jason

    1998-01-01

    Concrete block pavements (CBP) have historically been hics. used in low trafficked applications as an alternative to asphalt and concrete pavement because of their aesthetic quality. However, concrete block pavements have not been used for high...

  20. Measurement of the Magnet Blocks for SSRF Insertion Devices

    SciTech Connect (OSTI)

    He Yongzhou; Zhang Jidong; Zhou Qiaogen; Qian Zhenmei; Li Yang

    2010-06-23

    Two in-vacuum undulators IVU25s and one elliptically polarized undulator EPU100 have been developed for SSRF. Two IVU25s with the same hybrid design contain about 640 Sm{sub 2}Co{sub 17} magnet blocks and the dimension of blocks is 65 Wx25 Hx9 D. The EPU100 of the APPLE-II type contains about 690 NdFeB magnet blocks with the dimension of 35 Wx35 Hx25 D. This paper describes the magnetic measurements of these magnet blocks with the Helmholtz coil measurement system for IVU25 magnet blocks and the Hall probe measurement system for EPU100 magnet blocks. The measured maximum magnetic moment deviation and the maximum angle deviation are less than {+-}1.0% and 1.1 deg. respectively both for Sm{sub 2}Co{sub 17} blocks and NdFeB blocks and satisfy the specifications of undulators.

  1. ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANT PROGRAM NOTICE...

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

    ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANT PROGRAM NOTICE 10-004A ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANT PROGRAM NOTICE 10-004A REVISION: THIS GUIDANCE HAS BEEN AMENDED...

  2. Display blocks : cubic displays for multi-perspective visualizations

    E-Print Network [OSTI]

    Pla i Conesa, Pol

    2012-01-01

    This thesis details the design, execution and evaluation of a new type of display technology, known as Display Blocks. Display Blocks are a response to two major limitations of current displays: visualization and interaction. ...

  3. Block and Tub Supplements for Grazing Beef Cattle 

    E-Print Network [OSTI]

    Machen, Richard V.

    2003-03-19

    Block supplements offer cattle producers a means of supplementing the diets of their grazing beef cattle. This publication discusses the types of blocks available and recommendations for the use of each....

  4. Variations in the manufacturing of Rockwell test blocks

    E-Print Network [OSTI]

    Vora, Jairaj Deepak

    2009-01-01

    This research analyzes the variations occurring in the manufacturing of Rockwell hardness test blocks. Test blocks of different materials and hardness were analyzed and the variations were identified using the Ishikawa ...

  5. Memory blocking and recovery for affect word lists 

    E-Print Network [OSTI]

    Moynan, Sarah Catherine

    2013-02-22

    Smith et al. (2003) found powerful memory blocking and recovery effects for recall of categorized word lists. The present study investigated whether affect, or emotional words could be similarly blocked and recovered, or whether...

  6. Distributed Construction by Mobile Robots with Enhanced Building Blocks

    E-Print Network [OSTI]

    Napp, Nils

    not permitting blocks of this complexity, allowing blocks to store state (e.g., using passive, low-cost RFID tags endeavors such as the production of low-cost housing, and alleviate prob- lems such as high accident rates

  7. Energy Efficiency and Conservation Block Grant Program Success Stories

    Broader source: Energy.gov [DOE]

    Energy Efficiency and Conservation Block Grant (EECBG) Program's success stories including news articles, EERE Successes and EERE Blog entries.

  8. Organic photosensitive optoelectronic device having a phenanthroline exciton blocking layer

    DOE Patents [OSTI]

    Thompson, Mark E. (Anaheim Hills, CA); Li, Jian (Los Angeles, CA); Forrest, Stephen (Princeton, NJ); Rand, Barry (Princeton, NJ)

    2011-02-22

    An organic photosensitive optoelectronic device, having an anode, a cathode, and an organic blocking layer between the anode and the cathode is described, wherein the blocking layer comprises a phenanthroline derivative, and at least partially blocks at least one of excitons, electrons, and holes.

  9. Conservative Estimates of Blocking and Outage Probabilities in CDMA Networks

    E-Print Network [OSTI]

    Bonald, Thomas

    Conservative Estimates of Blocking and Outage Probabilities in CDMA Networks T. Bonald, A. Prouti`ere 1 France Telecom, Division R&D, Issy-les-Moulineaux, France Abstract The outage probability is a key the blocking probability. The blocking and outage probabilities do not have closed-form expressions

  10. Ordenao por Block-Interchanges e Reverses com Sinais

    E-Print Network [OSTI]

    Ayala-Rincón, Mauricio

    interessantes (novas estruturas de dados, algoritmos e etc.). Cleber Mira, João Meidanis Block-Interchanges e interessantes (novas estruturas de dados, algoritmos e etc.). Cleber Mira, João Meidanis Block-Interchanges e interessantes (novas estruturas de dados, algoritmos e etc.). Cleber Mira, João Meidanis Block-Interchanges e

  11. Onesided Block Jacobi Methods for the Symmetric Eigenvalue Problem ?

    E-Print Network [OSTI]

    Giménez, Domingo

    One­sided Block Jacobi Methods for the Symmetric Eigenvalue Problem ? D. Gim'enez 1 , J. Cuenca 1 theoretically two different one­sided block Jacobi algorithms for solving the Symmetric Eigenvalue Problem. Sequential and parallel versions of the algorithms are analized and com­ pared with a two­sided block Jacobi

  12. Block fusion systems and the center of the group ring

    E-Print Network [OSTI]

    Møller, Jesper Michael

    Block fusion systems and the center of the group ring Martin Wedel Jacobsen #12;#12;RESUME i of block fusion systems. Chapter 1 contains a brief introduction to the group algebra and some simple of a fusion system and the fundamental property of saturation. We also define block fusion systems and prove

  13. Department of Electrical Engineering Spring 2011 Glass Block Solar Collector

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Electrical Engineering Spring 2011 Glass Block Solar Collector Overview of the team to incorporate solar collectors into glass blocks and provide an application for the collected energy. Objectives The team's objective was to deliver a working glass block solar collector

  14. Active Management of Integrated Geothermal-CO2 Storage Reservoirs in Sedimentary Formations

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

    Buscheck, Thomas A.

    The purpose of phase 1 is to determine the feasibility of integrating geologic CO2 storage (GCS) with geothermal energy production. Phase 1 includes reservoir analyses to determine injector/producer well schemes that balance the generation of economically useful flow rates at the producers with the need to manage reservoir overpressure to reduce the risks associated with overpressure, such as induced seismicity and CO2 leakage to overlying aquifers. Based on a range of well schemes, techno-economic analyses of the levelized cost of electricity (LCOE) are conducted to determine the economic benefits of integrating GCS with geothermal energy production. In addition to considering CO2 injection, reservoir analyses are conducted for nitrogen (N2) injection to investigate the potential benefits of incorporating N2 injection with integrated geothermal-GCS, as well as the use of N2 injection as a potential pressure-support and working-fluid option. Phase 1 includes preliminary environmental risk assessments of integrated geothermal-GCS, with the focus on managing reservoir overpressure. Phase 1 also includes an economic survey of pipeline costs, which will be applied in Phase 2 to the analysis of CO2 conveyance costs for techno-economics analyses of integrated geothermal-GCS reservoir sites. Phase 1 also includes a geospatial GIS survey of potential integrated geothermal-GCS reservoir sites, which will be used in Phase 2 to conduct sweet-spot analyses that determine where promising geothermal resources are co-located in sedimentary settings conducive to safe CO2 storage, as well as being in adequate proximity to large stationary CO2 sources.

  15. Active Management of Integrated Geothermal-CO2 Storage Reservoirs in Sedimentary Formations

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

    Buscheck, Thomas A.

    2012-01-01

    The purpose of phase 1 is to determine the feasibility of integrating geologic CO2 storage (GCS) with geothermal energy production. Phase 1 includes reservoir analyses to determine injector/producer well schemes that balance the generation of economically useful flow rates at the producers with the need to manage reservoir overpressure to reduce the risks associated with overpressure, such as induced seismicity and CO2 leakage to overlying aquifers. Based on a range of well schemes, techno-economic analyses of the levelized cost of electricity (LCOE) are conducted to determine the economic benefits of integrating GCS with geothermal energy production. In addition to considering CO2 injection, reservoir analyses are conducted for nitrogen (N2) injection to investigate the potential benefits of incorporating N2 injection with integrated geothermal-GCS, as well as the use of N2 injection as a potential pressure-support and working-fluid option. Phase 1 includes preliminary environmental risk assessments of integrated geothermal-GCS, with the focus on managing reservoir overpressure. Phase 1 also includes an economic survey of pipeline costs, which will be applied in Phase 2 to the analysis of CO2 conveyance costs for techno-economics analyses of integrated geothermal-GCS reservoir sites. Phase 1 also includes a geospatial GIS survey of potential integrated geothermal-GCS reservoir sites, which will be used in Phase 2 to conduct sweet-spot analyses that determine where promising geothermal resources are co-located in sedimentary settings conducive to safe CO2 storage, as well as being in adequate proximity to large stationary CO2 sources.

  16. Building blocks for correlated superconductors and magnets

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

    Sarrao, J. L.; Ronning, F.; Bauer, E. D.; Batista, C. D.; Zhu, J. -X.; Thompson, J. D.

    2015-04-01

    Recent efforts at Los Alamos to discover strongly correlated superconductors and hard ferromagnets are reviewed. While serendipity remains a principal engine of materials discovery, design principles and structural building blocks are beginning to emerge that hold potential for predictive discovery. Successes over the last decade with the so-called “115” strongly correlated superconductors are summarized, and more recent efforts to translate these insights and principles to novel hard magnets are discussed. While true “materials by design” remains a distant aspiration, progress is being made in coupling empirical design principles to electronic structure simulation to accelerate and guide materials design and synthesis.

  17. Block Island Power Co | 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:Pontiac Biomass Facility JumpII JumpBlackfeetBlock Island Power

  18. Block Island 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 J APPENDIX ECoop IncIowaWisconsin:Pontiac Biomass Facility JumpII JumpBlackfeetBlock Island

  19. Quantum attacks against iterated block ciphers

    E-Print Network [OSTI]

    Marc Kaplan

    2015-04-26

    We study the amplification of security against quantum attacks provided by iteration of block ciphers. In the classical case, the Meet-in-the-middle attack is a generic attack against those constructions. This attack reduces the time required to break double iterations to only twice the time it takes to attack a single block cipher, given that the attacker has access to a large amount of memory. More abstractly, it shows that security by composition does not achieve exact multiplicative amplification. We present a quantized version of this attack based on an optimal quantum algorithm for the Element Distinctness problem. We then use the generalized adversary method to prove the optimality of the attack. An interesting corollary is that the time-space tradeoff for quantum attacks is very different from what classical attacks allow. This first result seems to indicate that composition resists better to quantum attacks than to classical ones because it prevents the quadratic speedup achieved by quantizing an exhaustive search. We investigate security amplification by composition further by examining the case of four iterations. We quantize a recent technique called the dissection attack using the framework of quantum walks. Surprisingly, this leads to better gains over classical attacks than for double iterations, which seems to indicate that when the number of iterations grows, the resistance against quantum attacks decreases.

  20. A reciprocating rotating-block engine

    SciTech Connect (OSTI)

    O`Connor, L.

    1995-06-01

    This article describes the Newbold power plant, a lightweight, clean burning, and efficient engine that is designed to be used in a variety of small-engine applications, from ultralight planes to wheelchairs. A new turbo rotary-power engine brings together different design concepts from engine technology, including the rotary motion of a block, which is applied in a rotary engine, and the reciprocating motion of pistons. The new power plant also uses an air delivery system that operates similar to a turbojet engine. The turbo rotary-power engine, developed by Vernon Newbold, founder of Newbold and Associates, in Lyons, CO, produces power from the heat generated by combustion of most liquid or gaseous fuels. Production engines, expected to be built in August, will be optimized to operate using diesel fuel.

  1. Organic photovoltaic cell incorporating electron conducting exciton blocking layers

    DOE Patents [OSTI]

    Forrest, Stephen R.; Lassiter, Brian E.

    2014-08-26

    The present disclosure relates to photosensitive optoelectronic devices including a compound blocking layer located between an acceptor material and a cathode, the compound blocking layer including: at least one electron conducting material, and at least one wide-gap electron conducting exciton blocking layer. For example, 3,4,9,10 perylenetetracarboxylic bisbenzimidazole (PTCBI) and 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) function as electron conducting and exciton blocking layers when interposed between the acceptor layer and cathode. Both materials serve as efficient electron conductors, leading to a fill factor as high as 0.70. By using an NTCDA/PTCBI compound blocking layer structure increased power conversion efficiency is achieved, compared to an analogous device using a conventional blocking layers shown to conduct electrons via damage-induced midgap states.

  2. Block copolymer adhesion promoters via ring-opening metathesis polymerization

    DOE Patents [OSTI]

    Kent, Michael S. (12320 Pine Ridge, NE, Albuquerque, NM 87112); Saunders, Randall (13201 Fruit Ave., NE, Albuquerque, NM 87123)

    1997-01-01

    Coupling agents based on functionalized block copolymers for bonding thermoset polymers to solid materials. These are polymers which possess at least two types of functional groups, one which is able to attach to and react with solid surfaces, and another which can react with a thermoset resin, which are incorporated as pendant groups in monomers distributed in blocks (typically two) along the backbone of the chain. The block copolymers in this invention are synthesized by living ring-opening metathesis polymerization.

  3. Automatic Learning of Block Storage Access Time Models

    E-Print Network [OSTI]

    Crume, Adam

    2015-01-01

    3 Storage devices 3.1 Scope ofedge-on . . . . . . . . Queueing in a storage device with noAUTOMATIC LEARNING OF BLOCK STORAGE ACCESS TIME MODELS A

  4. Guidance For Energy Efficiency And Conservation Block Grant Grantees...

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

    Department of Energy (DOE) Weatherization and Intergovernmental Program (WIP) Energy Efficiency and Conservation Block Grant (EECBG) Program Notice 09-002D modified October 17,...

  5. GUIDANCE FOR ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANT RECIPIENTS...

    Energy Savers [EERE]

    GUIDANCE FOR ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANT RECIPIENTS ON CLOSEOUT PROCEDURES FOR NON-STATE ENERGY OFFICE RECIPIENTS. GUIDANCE FOR ENERGY EFFICIENCY AND...

  6. Guidance for Energy Efficiency and Conservation Block Grant Grantees...

    Energy Savers [EERE]

    Energy Conservation Bonds and New Clean Renewable Energy Bonds Guidance for Energy Efficiency and Conservation Block Grant Grantees on Qualified Energy Conservation Bonds and...

  7. Energy Efficiency and Conservation Block Grant Program Success...

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

    lower greenhouse gas emissions and improve local air quality, thanks to an Energy Efficiency and Conservation Block Grant (EECBG). Learn more. November 9, 2010 Tecumseh is...

  8. Equity Effects of Increasing-Block Electricity Pricing

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01

    Kuester King. “ Residential Demand for Electricity underEvidence from Residential Electricity Demand,” Review ofChoice Approach to Residential Water Demand under Block Rate

  9. Energy.gov Content Management System Block Types

    Broader source: Energy.gov [DOE]

    For Office of Energy Efficiency and Renewable Energy (EERE) websites, learn about the variety of block types available in the Energy.gov Drupal content management system (CMS).

  10. Energy Efficiency and Conservation Block Grant Financing Program...

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

    of Energy's ongoing role in the monitoring, reporting, and oversight of Energy Efficiency and Conservation Block Grant-funded financing programs, including Revolving Loan...

  11. Energy Efficiency and Consveration Block Grant Program National...

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

    fact sheet provides summarized results of the National Evaluation of the Energy Efficiency and Conservation Block Grant Program, a national program funded one-time under the...

  12. ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANTS PROGRAM NOTICE...

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

    DAVIS-BACON ACT WAGE RATES FOR ARRA-FUNDED ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANTS PROGRAM PROJECTS INVOLVING RESIDENTIAL WEATHERIZATION WORK eecbgguidancenotusingwapr...

  13. ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANT (EECBG) - BETTER...

    Office of Scientific and Technical Information (OSTI)

    BLOCK GRANT (EECBG) - BETTER BUILDINGS NEIGHBORHOOD PROGRAM AT GREATER CINCINNATI ENERGY ALLIANCE Project Title: Home Performance with Energy Star and Better Buildings...

  14. Equity Effects of Increasing-Block Electricity Pricing

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01

    Evidence from Residential Electricity Demand,” Review ofLester D. “The Demand for Electricity: A Survey,” The BellResidential Demand for Electricity under Inverted Block

  15. Coordination polymers and building blocks based on ditopic heteroscorpionate ligands

    E-Print Network [OSTI]

    Santillan, Guillermo A.

    2009-01-01

    of Silver (I) Coordination Polymers formed through hydrogenBlocks for Coordination Polymers” Inorg. Chem. *One of theof Silver(I) Coordination Polymers Formed through Hydrogen

  16. Poly(lactide)-block-poly([epsilon]-caprolactone-co-[epsilon]-decalactone)-block-poly(lactide) copolymer elastomers

    SciTech Connect (OSTI)

    Schneiderman, Deborah K.; Hill, Erin M.; Martello, Mark T.; Hillmyer, Marc A. (UMM)

    2015-01-01

    Batch ring opening transesterification copolymerization of ?-caprolactone and ?-decalactone was used to generate statistical copolymers over a wide range of compositions and molar masses. Reactivity ratios determined for this monomer pair, rCL = 5.9 and rDL = 0.03, reveal ?-caprolactone is added preferentially regardless of the propagating chain end. Relative to poly(?-caprolactone) the crystallinity and melting point of these statistical copolymers were depressed by the addition of ?-decalactone; copolymers containing greater than 31 mol% (46 wt%) ?-decalactone were amorphous. Poly(lactide)-block-poly(?-caprolactone-co-?-decalactone)-block-poly(lactide) triblock polymers were also prepared and used to explore the influence of midblock composition on the temperature dependent Flory-Huggins interaction parameter (?). In addition, uniaxial extension tests were used to determine the effects of midblock composition, poly(lactide) content, and molar mass on the mechanical properties of these new elastomeric triblocks.

  17. Combinatorial Block Copolymer Ordering on Tunable Rough

    SciTech Connect (OSTI)

    Kulkarni M. M.; Yager K.; Sharma, A.; Karim, A.

    2012-05-01

    Morphology control of block copolymer (BCP) thin films through substrate interaction via controlled roughness parameters is of significant interest for numerous high-tech applications ranging from solar cells to high-density storage media. While effects of substrate surface energy (SE) and roughness (R) on BCP morphology have been individually investigated, their synergistic effects have not been explored in any systematic manner. Interestingly, orientation response of BCP to changes in SE can be similar to what can be accomplished with variations in R. Here we present a novel approach for orienting lamellar BCP films of poly(styrene)-block-poly(methyl methacrylate) (PS-PMMA) on spin-coated xerogel (a dried gel of silica nanoparticle network) substrate with simultaneously tunable surface energy, {gamma}{sub s} {approx} 29-53 mJ/m{sup 2}, by UVO exposure and roughness, R{sub rms} {approx} 0.5-30 nm, by sol-gel processing steps of regulating the catalyst concentration and sol aging time. As in previous BCP orientation studies on 20 nm diameter monodisperse silica nanoparticle coated surface, we find a similar but broadened oscillatory BCP orientation behavior with film thickness due to the random rather than periodic rough surfaces. We also find that higher random roughness amplitude is not the necessary criteria for obtaining a vertical orientation of BCP lamellae. Rather, a high surface fractal dimension (D{sub f} > 2.4) of the rough substrate in conjunction with an optimal substrate surface energy {gamma}{sub s} 29 mJ/m{sup 2} results in 100% vertically oriented lamellar microdomains. The AFM measured film surface microstructure correlates well with the internal 3D BCP film structure probed by grazing incidence small-angle X-ray scattering (GISAXS) and rotational small-angle neutron scattering (SANS). In contrast to tunable self-assembled monolayer (SAM)-coated substrates, the xerogel films are very durable and retain their chemical properties over period of several months. These results also highlight importantly that BCP orientation control for nanotechnology is possible not only on specially prepared patterned substrates but also on industrially viable sol-gel substrates.

  18. Orthogonal Capability Building Blocks for Flexible AHS Deployment

    E-Print Network [OSTI]

    Koopman, Philip

    , orthogonal building blocks #12;2 INTRODUCTION Reaping the full benefits of an Automated Highway System (AHS1 Orthogonal Capability Building Blocks for Flexible AHS Deployment Philip Koopman Michelle Bayouth, PA 15213 USA Pittsburgh, PA 15213 USA ABSTRACT Once a baseline level of full automation is possible

  19. Security Evaluation against Differential Cryptanalysis for Block Cipher Structures

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Security Evaluation against Differential Cryptanalysis for Block Cipher Structures Shengbao Wu1 lower bound of the minimal differential active S-boxes for various block cipher structures, but also provides an efficient way to select new structures with good properties against differential cryptanalysis

  20. Mismatched CSI Outage Exponents of Block-Fading Channels

    E-Print Network [OSTI]

    Mismatched CSI Outage Exponents of Block-Fading Channels A. Taufiq Asyhari Department variances at the transmitter and at the receiver to give the optimal outage exponents. We also demonstrate state information at the transmitter in terms of outage exponent. I. INTRODUCTION The block

  1. Blocking Analysis of Multifiber Wavelength-Routed Networks

    E-Print Network [OSTI]

    Jue, Jason P.

    will result in lower cost compared to networks with a single fiber per link and a large number of wavelengths. One reason for their attractiveness is that multifiber networks help to lower the blocking caused], an innovative reduced load approx- imation scheme with state-dependent arrival rate is developed for blocking

  2. Automatic Blocking Of QR and LU Factorizations for Locality

    SciTech Connect (OSTI)

    Yi, Q; Kennedy, K; You, H; Seymour, K; Dongarra, J

    2004-03-26

    QR and LU factorizations for dense matrices are important linear algebra computations that are widely used in scientific applications. To efficiently perform these computations on modern computers, the factorization algorithms need to be blocked when operating on large matrices to effectively exploit the deep cache hierarchy prevalent in today's computer memory systems. Because both QR (based on Householder transformations) and LU factorization algorithms contain complex loop structures, few compilers can fully automate the blocking of these algorithms. Though linear algebra libraries such as LAPACK provides manually blocked implementations of these algorithms, by automatically generating blocked versions of the computations, more benefit can be gained such as automatic adaptation of different blocking strategies. This paper demonstrates how to apply an aggressive loop transformation technique, dependence hoisting, to produce efficient blockings for both QR and LU with partial pivoting. We present different blocking strategies that can be generated by our optimizer and compare the performance of auto-blocked versions with manually tuned versions in LAPACK, both using reference BLAS, ATLAS BLAS and native BLAS specially tuned for the underlying machine architectures.

  3. Toward Practical Homomorphic Evaluation of Block Ciphers Using Prince

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Toward Practical Homomorphic Evaluation of Block Ciphers Using Prince Yarkin Dor¨oz, Aria Shahverdi,ashahverdi,teisenbarth,sunar}@wpi.edu Abstract. We present the homomorphic evaluation of the Prince block cipher. Our leveled implementation be achieved by scheme conversion. To unlock this advantage we turn to lightweight ci- phers such as Prince

  4. Germanium blocked impurity band infrared detectors

    SciTech Connect (OSTI)

    Rossington, C.S.; Haller, E.E.

    1988-08-01

    Germanium blocked impurity band (BIB) photoconductors have been fabricated and characterized for responsivity, dark current, and noise equivalent power. BIB photoconductors theoretically provide an extension of the spectral response, a reduction in sensitivity to cosmic radiation and a reduction in noise characteristics compared with conventional photoconductors. Silicon BIB detectors have been successfully developed by researchers at Rockwell International, which do indeed meet their theoretical potential. In the proper configuration, these same Si BIB detectors are capable of continuous detection of individual photons in the wavelength range from 0.4 to 28 ..mu..m. Until the BIB concept was developed, detection of individual photons was only possible with photomultiplier tubes which detected visible light. Due to the successes of the Si BIB detectors, it seemed natural to extend this concept to Ge detectors, which would then allow an extension of the spectral response over conventional Ge detectors from /approximately/100 ..mu..m to /approximately/200 ..mu..m. 8 refs., 2 figs.

  5. Light-emitting block copolymers composition, process and use

    DOE Patents [OSTI]

    Ferraris, John P.; Gutierrez, Jose J.

    2006-11-14

    Generally, and in one form, the present invention is a composition of light-emitting block copolymer. In another form, the present invention is a process producing a light-emitting block copolymers that intends polymerizing a first di(halo-methyl) aromatic monomer compound in the presence of an anionic initiator and a base to form a polymer and contacting a second di(halo-methyl) aromatic monomer compound with the polymer to form a homopolymer or block copolymer wherein the block copolymer is a diblock, triblock, or star polymer. In yet another form, the present invention is an electroluminescent device comprising a light-emitting block copolymer, wherein the electroluminescent device is to be used in the manufacturing of optical and electrical devices.

  6. NANOSTRUCTURED METAL OXIDE CATALYSTS VIA BUILDING BLOCK SYNTHESES

    SciTech Connect (OSTI)

    Craig E. Barnes

    2013-03-05

    A broadly applicable methodology has been developed to prepare new single site catalysts on silica supports. This methodology requires of three critical components: a rigid building block that will be the main structural and compositional component of the support matrix; a family of linking reagents that will be used to insert active metals into the matrix as well as cross link building blocks into a three dimensional matrix; and a clean coupling reaction that will connect building blocks and linking agents together in a controlled fashion. The final piece of conceptual strategy at the center of this methodology involves dosing the building block with known amounts of linking agents so that the targeted connectivity of a linking center to surrounding building blocks is obtained. Achieving targeted connectivities around catalytically active metals in these building block matrices is a critical element of the strategy by which single site catalysts are obtained. This methodology has been demonstrated with a model system involving only silicon and then with two metal-containing systems (titanium and vanadium). The effect that connectivity has on the reactivity of atomically dispersed titanium sites in silica building block matrices has been investigated in the selective oxidation of phenols to benezoquinones. 2-connected titanium sites are found to be five times as active (i.e. initial turnover frequencies) than 4-connected titanium sites (i.e. framework titanium sites).

  7. PII S0016-7037(99)00335-X Sedimentary sources of old high molecular weight dissolved organic carbon from the ocean

    E-Print Network [OSTI]

    Guo, Laodong

    terrestrial, autochthonous, and sedimentary organic carbon seem to be too young to be responsible for the old cross-flow ultrafiltration, it can hold clues to sources and pathways of DOC turnover in the ocean compounds with varying sources (Meybeck, 1982; Thurman, 1985; Hedges et al., 1997), degradation pathways

  8. Block copolymer adhesion promoters via ring-opening metathesis polymerization

    DOE Patents [OSTI]

    Kent, M.S.; Saunders, R.

    1997-02-18

    Coupling agents are disclosed based on functionalized block copolymers for bonding thermoset polymers to solid materials. These are polymers which possess at least two types of functional groups, one which is able to attach to and react with solid surfaces, and another which can react with a thermoset resin, which are incorporated as pendant groups in monomers distributed in blocks (typically two) along the backbone of the chain. The block copolymers in this invention are synthesized by living ring-opening metathesis polymerization. 18 figs.

  9. Studies of Block Copolymer Thin Films and Mixtures with an Ionic Liquid

    E-Print Network [OSTI]

    Virgili, Justin

    2009-01-01

    lateral order of poly(styrene-block-isoprene) copolymer (PS-The phase behavior of poly(styrene-block-2-vinyl pyridine)mixtures of a poly(styrene-block-2-vinyl pyridine) (S2VP)

  10. Energy Efficiency and Conservation Block Grant Program Success...

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

    like this will grace Gabe Nesbitt Community Park in McKinney, Texas, thanks to an Energy Efficiency and Conservation Block Grant | Photo courtesy of McKinney, Texas EECBG...

  11. Revealing the potential of Compressed Earth Blocks : a visual narration

    E-Print Network [OSTI]

    Rabie, Omar

    2008-01-01

    Compressed Earth Blocks (CEB) is a developed earth technology, in which unbaked brick is produced by compressing raw soil using manual, hydraulic, or mechanical compressing machines. Revealing the potential of an affordable ...

  12. High performance RF and baseband building blocks for wireless receivers 

    E-Print Network [OSTI]

    Bahmani, Faramarz

    2007-09-17

    Because of the unique architecture of wireless receivers, a designer must understand both the high frequency aspects as well as the low-frequency analog considerations for different building blocks of the receiver. The ...

  13. Guidance for Energy Efficiency and Conservation Block Grant Program...

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

    U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Energy Efficiency and Conservation Block Grant (EECBG) Program Guidance 10-011 dealing with...

  14. Strategies for incorporating functional block copolymers into polyelectrolyte multilayer coatings

    E-Print Network [OSTI]

    Tan, Wui Siew

    2011-01-01

    This thesis explores the creation of thin film responsive hydrogel coatings via Layer-by Layer assembly (LbL) of temperature (T) responsive block copolymer - polyelectrolyte multilayers (PEMs). First, the LbL conditions ...

  15. The robustness of block truncation coding for image compression 

    E-Print Network [OSTI]

    Hinojosa, Teresa Yvonne

    1995-01-01

    implementation. It uses a one bit quantizer with two output levels and a threshold. We address the imperfect knowledge of the true quantizer output levels by deriving a quantitative robustness measure for block truncation coding utilizing a differential geometric...

  16. Local implementation of nonlocal operations of block forms

    E-Print Network [OSTI]

    Ning Bo Zhao; An Min Wang

    2008-03-27

    We investigate the local implementation of nonlocal operations with the block matrix form, and propose a protocol for any diagonal or offdiagonal block operation. This method can be directly generalized to the two-party multiqubit case and the multiparty case. Especially, in the multiparty cases, any diagonal block operation can be locally implemented using the same resources as the multiparty control-U operation discussed in Ref. [Eisert et al., Phys. Rev. A 62, 052317(2000)]. Although in the bipartite case, this kind of operations can be transformed to control-U operation using local operations, these transformations are impossible in the multiparty cases. We also compare the local implementation of nonlocal block operations with the remote implementation of local operations, and point out a relation between them.

  17. Virasoro Conformal Blocks and Thermality from Classical Background Fields

    E-Print Network [OSTI]

    A. Liam Fitzpatrick; Jared Kaplan; Matthew T. Walters

    2015-10-15

    We show that in 2d CFTs at large central charge, the coupling of the stress tensor to heavy operators can be re-absorbed by placing the CFT in a non-trivial background metric. This leads to a more precise computation of the Virasoro conformal blocks between heavy and light operators, which are shown to be equivalent to global conformal blocks evaluated in the new background. We also generalize to the case where the operators carry U(1) charges. The refined Virasoro blocks can be used as the seed for a new Virasoro block recursion relation expanded in the heavy-light limit. We comment on the implications of our results for the universality of black hole thermality in $AdS_3$, or equivalently, the eigenstate thermalization hypothesis for $CFT_2$ at large central charge.

  18. Building Blocks for Medicaid Success A presentation by Shelley Dietzman

    E-Print Network [OSTI]

    Saldin, Dilano

    Building Blocks for Medicaid Success A presentation by Shelley Dietzman Provider Relations to CHS Office of Student Affairs, Northwest Quad, Building B, Room 6425 or chsadv@uwm.edu #12;

  19. Method and structure for skewed block-cyclic distribution of...

    Office of Scientific and Technical Information (OSTI)

    Method and structure for skewed block-cyclic distribution of lower-dimensional data arrays in higher-dimensional processor grids Citation Details In-Document Search Title: Method...

  20. Single-block collision attack on MD5 Marc Stevens

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Single-block collision attack on MD5 Marc Stevens Cryptology Group, CWI P.O. Box 94079, NL-1090 GB Amsterdam, The Netherlands marc@marc-stevens.nl January 29, 2012 Abstract In 2010, Tao Xie and Dengguo Feng

  1. Energy Efficiency and Conservation Block Grant Program National...

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

    This document presents findings from an evaluation of the Energy Efficiency and Conservation Block Grant Program, a national program operated by the U.S. Department of Energy from...

  2. Two urban corners : a design exploration for the Holloway block

    E-Print Network [OSTI]

    Cabot, Thomas Dudley

    1982-01-01

    This thesis explores built possibilities for two public street corners at the Holloway Block in Burlington, Vermont The site is at the historic commercial center of the town, and consisted until recently of abandoned ...

  3. Templated self-assembly of siloxane block copolymers for nanofabrication

    E-Print Network [OSTI]

    Jung, Yeon Sik

    2009-01-01

    Monolayer patterns of block copolymer (BCP) microdomains have been pursued for applications in below sub-30 nm nanolithography. BCP selfassembly processing is scalable and low cost, and is well-suited for integration with ...

  4. Controlling morphology of multi-component block copolymer based materials

    E-Print Network [OSTI]

    Mickiewicz, Rafal Adam, 1974-

    2009-01-01

    The ability of block copolymers to self-assemble into ordered microstructures has attracted much interest both from a pure scientific perspective and for their potential in numerous industrial applications. The microphase ...

  5. Fault Block Kinematics at a Releasing Stepover of the Eastern...

    Open Energy Info (EERE)

    Nascent Metamorphic Core Complex Citation Christopher J. Pluhar,Robert S. Coe,Jonathan C. Lewis,Francis C. Monastero,Jonathan M.G. Glen. 2006. Fault Block Kinematics at a Releasing...

  6. Microfluidic devices and Block Copolymer Nanolithography Lead: D. Angelescu

    E-Print Network [OSTI]

    Baudoin, Geneviève

    Microfluidic devices and Block Copolymer Nanolithography Lead: D. Angelescu Permanent members: B, X. Yuan One of our activities in microfluidics involves the design of a microfluidic system which measures pressure drops along microfluidic channels involving different types of constrictions using

  7. Check of AGT Relation for Conformal Blocks on Sphere

    E-Print Network [OSTI]

    V. Alba; And. Morozov

    2010-06-15

    The AGT conjecture identifying conformal blocks with the Nekrasov functions is investigated for the spherical conformal blocks with more than 4 external legs. The diagram technique which arises in conformal block calculation involves propagators and vertices. We evaluated vertices with two Virasoro algebra descendants and explicitly checked the AGT relation up to the third order of the expansion for the 5-point and 6-point conformal blocks on sphere confirming all the predictions of arXiv:0906.3219 relevant in this situation. We propose that U(1)-factor can be extracted from the matrix elements of the free field Vertex operators. We studied the n-point case, and found out that our results confirm the AGT conjecture up to the third order expansions.

  8. Big Questions: The Ultimate Building Blocks of Matter

    ScienceCinema (OSTI)

    Lincoln, Don

    2014-08-07

    The Standard Model of particle physics treats quarks and leptons as having no size at all. Quarks are found inside protons and neutrons and the most familiar lepton is the electron. While the best measurements to date support that idea, there is circumstantial evidence that suggests that perhaps the these tiny particles might be composed of even smaller building blocks. This video explains this circumstantial evidence and introduces some very basic ideas of what those building blocks might be.

  9. Bulk Vitrification Castable Refractory Block Protection Study

    SciTech Connect (OSTI)

    Hrma, Pavel R.; Bagaasen, Larry M.; Beck, Andrew E.; Brouns, Thomas M.; Caldwell, Dustin D.; Elliott, Michael L.; Matyas, Josef; Minister, Kevin BC; Schweiger, Michael J.; Strachan, Denis M.; Tinsley, Bronnie P.; Hollenberg, Glenn W.

    2005-05-01

    Bulk vitrification (BV) was selected for a pilot-scale test and demonstration facility for supplemental treatment to accelerate the cleanup of low-activity waste (LAW) at the Hanford U.S. DOE Site. During engineering-scale (ES) tests, a small fraction of radioactive Tc (and Re, its nonradioactive surrogate) were transferred out of the LAW glass feed and molten LAW glass, and deposited on the surface and within the pores of the castable refractory block (CRB). Laboratory experiments were undertaken to understand the mechanisms of the transport Tc/Re into the CRB during vitrification and to evaluate various means of CRB protection against the deposition of leachable Tc/Re. The tests used Re as a chemical surrogate for Tc. The tests with the baseline CRB showed that the molten LAW penetrates into CRB pores before it converts to glass, leaving deposits of sulfates and chlorides when the nitrate components decompose. Na2O from the LAW reacts with the CRB to create a durable glass phase that may contain Tc/Re. Limited data from a single CRB sample taken from an ES experiment indicate that, while a fraction of Tc/Re is present in the CRB in a readily leachable form, most of the Tc/Re deposited in the refractory is retained in the form of a durable glass phase. In addition, the molten salts from the LAW, mainly sulfates, chlorides, and nitrates, begin to evaporate from BV feeds at temperatures below 800 C and condense on solid surfaces at temperatures below 530 C. Three approaches aimed at reducing or preventing the deposition of soluble Tc/Re within the CRB were proposed: metal lining, sealing the CRB surface with a glaze, and lining the CRB with ceramic tiles. Metal liners were deemed unsuitable because evaluations showed that they can cause unacceptable distortions of the electric field in the BV system. Sodium silicate and a low-alkali borosilicate glaze were selected for testing. The glazes slowed down molten salt condensate penetration, but did little to reduce the penetration of molten salt. Out of several refractory tile candidates, only greystone and fused-cast alumina-zirconia-silica (AZS) refractory remained intact and well bonded to the CRB after firing to 1000 C. The deformation of the refractory-tile composite was avoided by prefiring the greystone tile to 800 C. Condensed vapors did not penetrate the tiles, but Re salts condensed on their surface. Refractory corrosion tests indicated that a 0.25-inch-thick greystone tile would not corrode during a BV melt. Tiles can reduce both vapor penetration and molten salt penetration, but vapor deposition above the melt line will occur even on tiles. The Tc/Re transport scenario was outlined as follows. At temperatures below 700 C, molten ionic salt (MIS) that includes all the Tc/Re penetrates, by capillarity, from the feed into the CRB open porosity. At approximately 750 C, the MIS decomposes through the loss of NOx, leaving mainly sulfate and chloride salts. The Na2O formed in the decomposition of the nitrates reacts with insoluble grains in the feed and with the aluminosilicates in the CRB to form more viscous liquids that reduce further liquid penetration into the CRB. At 800 to 1000 C, a continuous glass phase traps the remains of the MIS in the form of inclusions in the bulk glass melt. At 1000 to 1200 C, the salt inclusions in the glass slowly dissolve but also rise to the surface. The Tc/Re salts also evaporate from the free surface of the glass melt that is rapidly renewed by convective currents. The vapors condense on cooler surfaces in the upper portion of the CRB, the box lid, and the off-gas system.

  10. Tobacco mosaic virus: A biological building block for micro/nano...

    Office of Scientific and Technical Information (OSTI)

    Tobacco mosaic virus: A biological building block for micronanobio systems Citation Details In-Document Search Title: Tobacco mosaic virus: A biological building block for micro...

  11. Impact of sedimentary provenance and weathering on arsenic distribution in aquifers of the Datong basin, China: Constraints from elemental geochemistry

    SciTech Connect (OSTI)

    Xie, Xianjun; Wang, Yanxin; Ellis, Andre; Liu, Chongxuan; Duan, Mengyu; Li, Junxia

    2014-11-01

    Arsenic (As)-contaminated aquifer sediments from Datong basin, China have been analyzed to infer the provenance and depositional environment related to As distribution in the aquifer sediments. The As content in the sediments ranged from 2.45 to 27.38 mg/kg with an average value of 9.54 mg/kg, which is comparable to the average value in modern unconsolidated sediments. However, minor variation in As concentration with depth has been observed in the core. There was a significant correlation between Fe, and Al and As, which was attributed to the adsorption or co-precipitation of As onto/with Fe oxides/hydroxides and/or Fe-coated clay minerals. Post-Archean Australian Shale (PAAS)-normalized REEs patterns of sediment samples along the borehole were constant, and the sediments had a notably restricted range of La-N/Yb-N ratios from 0.7 to 1.0. These results suggested that the provenance of the Datong basin remained similar throughout the whole depositional period. The analysis of major geochemical compositions confirmed that all core sediments were from the same sedimentary source and experienced significant sedimentary recycling. The co-variation of As, V/Al, Ni/Al and chemical index of alteration (CIA) values in the sediments along the borehole suggested that As distribution in the sediments was primarily controlled by weathering processes. The calculated CIA values of the sediments along the borehole indicate that a relative strong chemical weathering occurred during the deposition of sediments at depths of similar to 35 to 88 m, which was corresponding to the depth at which high As groundwater was observed at the site. Strong chemical weathering favored the deposition of Fe-bearing minerals including poorly crystalline and crystalline Fe oxide mineral phases and concomitant co-precipitation of As with these minerals in the sediments. Subsequent reductive dissolution of As-bearing poorly crystalline and crystalline Fe oxides would result in the enrichment of As in groundwater. In general, the chemical weathering during the deposition of the sediments governed the co-accumulation of Fe oxides and As in the aquifer sediments. And then, the reductive dissolution of Fe oxides/hydroxides is the mechanism of As enrichment in the groundwater in the Datong basin

  12. Block-oriented modeling of superstructure optimization problems

    SciTech Connect (OSTI)

    Friedman, Z; Ingalls, J; Siirola, JD; Watson, JP

    2013-10-15

    We present a novel software framework for modeling large-scale engineered systems as mathematical optimization problems. A key motivating feature in such systems is their hierarchical, highly structured topology. Existing mathematical optimization modeling environments do not facilitate the natural expression and manipulation of hierarchically structured systems. Rather, the modeler is forced to "flatten" the system description, hiding structure that may be exploited by solvers, and obfuscating the system that the modeling environment is attempting to represent. To correct this deficiency, we propose a Python-based "block-oriented" modeling approach for representing the discrete components within the system. Our approach is an extension of the Pyomo library for specifying mathematical optimization problems. Through the use of a modeling components library, the block-oriented approach facilitates a clean separation of system superstructure from the details of individual components. This approach also naturally lends itself to expressing design and operational decisions as disjunctive expressions over the component blocks. By expressing a mathematical optimization problem in a block-oriented manner, inherent structure (e.g., multiple scenarios) is preserved for potential exploitation by solvers. In particular, we show that block-structured mathematical optimization problems can be straightforwardly manipulated by decomposition-based multi-scenario algorithmic strategies, specifically in the context of the PySP stochastic programming library. We illustrate our block-oriented modeling approach using a case study drawn from the electricity grid operations domain: unit commitment with transmission switching and N - 1 reliability constraints. Finally, we demonstrate that the overhead associated with block-oriented modeling only minimally increases model instantiation times, and need not adversely impact solver behavior. (C) 2013 Elsevier Ltd. All rights reserved.

  13. Conformal Blocks Beyond the Semi-Classical Limit

    E-Print Network [OSTI]

    A. Liam Fitzpatrick; Jared Kaplan

    2015-12-15

    Black hole microstates and their approximate thermodynamic properties can be studied using heavy-light correlation functions in AdS/CFT. Universal features of these correlators can be extracted from the Virasoro conformal blocks in CFT2, which encapsulate quantum gravitational effects in AdS3. At infinite central charge c, the Virasoro vacuum block provides an avatar of the black hole information paradox in the form of periodic Euclidean-time singularities that must be resolved at finite c. We compute Virasoro blocks in the heavy-light, large c limit, extending our previous results by determining perturbative 1/c corrections. We obtain explicit closed-form expressions for both the `semi-classical' $h_L^2 / c^2$ and `quantum' $h_L / c^2$ corrections to the vacuum block, and we provide integral formulas for general Virasoro blocks. We comment on the interpretation of our results for thermodynamics, discussing how monodromies in Euclidean time can arise from AdS calculations using `geodesic Witten diagrams'. We expect that only non-perturbative corrections in 1/c can resolve the singularities associated with the information paradox.

  14. Building Blocks for Generalized Heterotic/F-theory Duality

    E-Print Network [OSTI]

    Jonathan J. Heckman; Hai Lin; Shing-Tung Yau

    2013-11-25

    In this note we propose a generalization of heterotic/F-theory duality. We introduce a set of non-compact building blocks which we glue together to reach compact examples of generalized duality pairs. The F-theory building blocks consist of non-compact elliptically fibered Calabi-Yau fourfolds which also admit a K3 fibration. The compact elliptic model obtained by gluing need not have a globally defined K3 fibration. By replacing the K3 fiber of each F-theory building block with a T^2, we reach building blocks in a heterotic dual vacuum which includes a position dependent dilaton and three-form flux. These building blocks are glued together to reach a heterotic flux background. We argue that in these vacua, the gauge fields of the heterotic string become localized, and remain dynamical even when gravity decouples. This enables a heterotic dual for the hyperflux GUT breaking mechanism which has recently figured prominently in F-theory GUT models. We illustrate our general proposal with some explicit examples.

  15. Morphological studies on block copolymer modified PA 6 blends

    SciTech Connect (OSTI)

    Poindl, M., E-mail: marcus.poindl@ikt.uni-stuttgart.de, E-mail: christian.bonten@ikt.uni-stuttgart.de; Bonten, C., E-mail: marcus.poindl@ikt.uni-stuttgart.de, E-mail: christian.bonten@ikt.uni-stuttgart.de [Institut für Kunststofftechnik, University of Stuttgart (Germany)

    2014-05-15

    Recent studies show that compounding polyamide 6 (PA 6) with a PA 6 polyether block copolymers made by reaction injection molding (RIM) or continuous anionic polymerization in a reactive extrusion process (REX) result in blends with high impact strength and high stiffness compared to conventional rubber blends. In this paper, different high impact PA 6 blends were prepared using a twin screw extruder. The different impact modifiers were an ethylene propylene copolymer, a PA PA 6 polyether block copolymer made by reaction injection molding and one made by reactive extrusion. To ensure good particle matrix bonding, the ethylene propylene copolymer was grafted with maleic anhydride (EPR-g-MA). Due to the molecular structure of the two block copolymers, a coupling agent was not necessary. The block copolymers are semi-crystalline and partially cross-linked in contrast to commonly used amorphous rubbers which are usually uncured. The combination of different analysis methods like atomic force microscopy (AFM), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) gave a detailed view in the structure of the blends. Due to the partial cross-linking, the particles of the block copolymers in the blends are not spherical like the ones of ethylene propylene copolymer. The differences in molecular structure, miscibility and grafting of the impact modifiers result in different mechanical properties and different blend morphologies.

  16. Biogenicity and Syngeneity of Organic Matter in Ancient Sedimentary Rocks: Recent Advances in the Search for Evidence of Past Life

    SciTech Connect (OSTI)

    Oehler, Dorothy Z.; Cady, Sherry L.

    2014-12-01

    he past decade has seen an explosion of new technologies for assessment of biogenicity and syngeneity of carbonaceous material within sedimentary rocks. Advances have been made in techniques for analysis of in situ organic matter as well as for extracted bulk samples of soluble and insoluble (kerogen) organic fractions. The in situ techniques allow analysis of micrometer-to-sub-micrometer-scale organic residues within their host rocks and include Raman and fluorescence spectroscopy/imagery, confocal laser scanning microscopy, and forms of secondary ion/laser-based mass spectrometry, analytical transmission electron microscopy, and X-ray absorption microscopy/spectroscopy. Analyses can be made for chemical, molecular, and isotopic composition coupled with assessment of spatial relationships to surrounding minerals, veins, and fractures. The bulk analyses include improved methods for minimizing contamination and recognizing syngenetic constituents of soluble organic fractions as well as enhanced spectroscopic and pyrolytic techniques for unlocking syngenetic molecular signatures in kerogen. Together, these technologies provide vital tools for the study of some of the oldest and problematic carbonaceous residues and for advancing our understanding of the earliest stages of biological evolution on Earth and the search for evidence of life beyond Earth. We discuss each of these new technologies, emphasizing their advantages and disadvantages, applications, and likely future directions.

  17. Modeling pre-failure stress-strain properties of sedimentary softrock based on very small strain stiffness

    SciTech Connect (OSTI)

    Hayano, K.; Tatsuoka, F.; Yoshiizumi, N.

    1999-07-01

    The pre-peak stress-strain properties of sedimentary softrocks were investigated by triaxial compression tests and large-amplitude cyclic loading tests extending triaxial compression and extension stress states. Axial strains were measured locally to a resolution of 0.0001%. Young's moduli E{sub v} at quasi-elastic small axial strains of less than about 0.001% were evaluated at different isotropic and anisotropic stress states during those tests and isotropic compression tests. The E{sub v} value increased rather uniquely with the vertical stress {sigma}{sub v} while it decreased with large-amplitude cyclic straining, compared with those measured at isotropic stress states. A normalization method is proposed for the drained tangent Young's modulus E{sub tan} to exclude the effects of pressure change and damage by shearing on the E{sub tan} values by dividing each E{sub tan} value by the current E{sub v} value. The E{sub tan}/E{sub v} and q/q{sub max} relationships are considered to have more general strain-nonlinear features than the relationships between the ratio of E{sub tan} to the initial elastic Young's modulus E{sub 0} and q/q{sub max}.

  18. Strontium Distribution Coefficients of Surficial and Sedimentary Interbed Samples from the Idaho National Engineering and Environmental Laboratory, Idaho

    SciTech Connect (OSTI)

    M. J. Liszewski (USGS); J. J. Rosentreter (ISU); K. E. Miller (USGS); R. C. Bartholomay (USGS)

    1998-04-01

    The transport and fate of waste constituents in geologic media is dependent on physical and chemical processes that govern the distribution of constituents between the solid, geologic, stationary phase and an aqueous, mobile phase. This distribution often is quantified, at thermodynamic equilibrium by an empirically determined parameter called the distribution coefficient (Kd). Kd's can be used effectively to summarize the chemical factors that affect transport efficiency of ground-water constituents. Strontium distribution coefficients (Kd's) were measured for 21 surficial and 17 sedimentary interbed samples collected from sediment cores from selected sites at the Idaho National Engineering and Environmental Laboratory (INEEL) to help assess the variability of strontium Kd's at the INEEL as part of an ongoing investigation of strontium chemical-transport properties. Batch experimental techniques were used to determine strontium Kd's of the sediments. Measured strontium Kd's of th e surficial and interbedded sediments ranged from 26{+-}1 to 328{+-}41 milliliters per gram. These results indicate significant variability in the strontium sorptive capacities of surficial and interbedded sediments at the INEEL. Some of this variability can be attributed to physical and chemical properties of the sediment; other variability may be due to compositional changes in the equilibrated solutions after being mixed with the sediment.

  19. NIST Special Publication 800-38A Recommendation for Block 2001 Edition Cipher Modes of Operation

    E-Print Network [OSTI]

    cipher algorithm: Electronic Codebook (ECB), Cipher Block Chaining (CBC), Cipher Feedback (CFB), Output

  20. Display Blocks: a Set of Cubic Displays for Tangible, Multi-Perspective Data Exploration

    E-Print Network [OSTI]

    -digital disconnect. Each Display Block consists of six organic light emitting diode (OLED) screens, arranged

  1. Biclique Cryptanalysis of the Block Cipher SQUARE Department of Information Technology, University of Isfahan, Isfahan, Iran

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    , University of Isfahan, Isfahan, Iran Abstract. SQUARE, an 8-round substitution-permutation block cipher

  2. A Note on the Use of the Woodbury Formula To Solve Cyclic Block Tri-Diagonal and Cyclic Block Penta-diagonal Linear Systems of Equations

    E-Print Network [OSTI]

    Milan Batista; Abdel Rahman A. Ibrahim Karawia

    2008-07-24

    The article presents the theoretical background of the algorithms for solving cyclic block tridiagonal and cyclic block penta-diagonal systems of linear algebraic equations present in ref [1] and [2]. The theory is based on the Woodbury formula.

  3. Lignin-blocking treatment of biomass and uses thereof

    DOE Patents [OSTI]

    Yang, Bin (Hanover, NH); Wyman, Charles E. (Norwich, VT)

    2009-10-20

    Disclosed is a method for converting cellulose in a lignocellulosic biomass. The method provides for a lignin-blocking polypeptide and/or protein treatment of high lignin solids. The treatment enhances cellulase availability in cellulose conversion. Cellulase efficiencies are improved by the protein or polypeptide treatment. The treatment may be used in combination with steam explosion and acid prehydrolysis techniques. Hydrolysis yields from lignin containing biomass are enhanced 5-20%, and enzyme utilization is increased from 10% to 50%. Thus, a more efficient and economical method of processing lignin containing biomass materials utilizes a polypeptide/protein treatment step that effectively blocks lignin binding of cellulase.

  4. Block Tensor Decomposition for Source Apportionment of Air Pollution

    E-Print Network [OSTI]

    Hopke, Philip K; Li, Na; Navasca, Carmeliza

    2011-01-01

    The ambient particulate chemical composition data with three particle diameter sizes (2.5mmair sample data. In particular, we use the Block Term Decomposition (BTD) in rank-(L;L;1) form to identify nine pollution sources (Fe+Zn, Sulfur with Dust, Road Dust, two types of Metal Works, Road Salt, Local Sulfate, and Homogeneous and Cloud Sulfate).

  5. Reordering transitions during annealing of block copolymer cylinder phases

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

    Majewski, Pawel W.; Yager, Kevin G.

    2015-10-06

    While equilibrium block-copolymer morphologies are dictated by energy-minimization effects, the semi-ordered states observed experimentally often depend on the details of ordering pathways and kinetics. In this study, we explore reordering transitions in thin films of block-copolymer cylinder-forming polystyrene-block-poly(methyl methacrylate). We observe several transient states as films order towards horizontally-aligned cylinders. In particular, there is an early-stage reorganization from randomly-packed cylinders into hexagonally-packed vertically-aligned cylinders; followed by a reorientation transition from vertical to horizontal cylinder states. These transitions are thermally activated. The growth of horizontal grains within an otherwise vertical morphology proceeds anisotropically, resulting in anisotropic grains in the final horizontalmore »state. The size, shape, and anisotropy of grains are influenced by ordering history; for instance, faster heating rates reduce grain anisotropy. These results help elucidate aspects of pathway-dependent ordering in block-copolymer thin films.« less

  6. Simulation of bilinear flow in single matrix block drainage 

    E-Print Network [OSTI]

    Branajaya, Romi Triaji

    2005-02-17

    kf,. The fracture half-length reflects on a/b aspect ratio. The analytical solution for hydraulic fracture developed by Cinco-Ley and Guppy serves as the validation of matrix block drainage. Analysis on the flow regimes which occurred for different...

  7. MEANSQUARE ANALYSIS OF THE MULTIPLEERROR AND BLOCK LMS ADAPTIVE ALGORITHMS

    E-Print Network [OSTI]

    Douglas, Scott C.

    MEAN­SQUARE ANALYSIS OF THE MULTIPLE­ERROR AND BLOCK LMS ADAPTIVE ALGORITHMS S. C. Douglas filters share a common multiple­error LMS algorithm update, given by W k+1 = W k +¯X k (D k \\Gamma X T k W k ): (1) In this paper, we examine the mean­square per­ formance of the multiple­error LMS adaptive

  8. A New Encryption Standard of Ukraine: The Kalyna Block Cipher

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    A New Encryption Standard of Ukraine: The Kalyna Block Cipher Roman Oliynykov1 , Ivan Gorbenko1 Technologies, 2 State Service of Special Communication and Information Protection of Ukraine, 3 V.N.Karazin Kharkiv National University 4 Kharkiv National University of Radio Electronics Ukraine roliynykov

  9. Nanowires As Building Blocks for Bottom-Up Nanotechnology

    E-Print Network [OSTI]

    Wang, Zhong L.

    #12;Nanowires As Building Blocks for Bottom-Up Nanotechnology The field of nanotechnology/or combinations of function in an integrated nanosystem. To enable this bottom-up approach for nanotechnology-dimensional (1D) nanostruc- tures at the forefront of nanoscience and nanotechnology. NWs and NBs are typi- cally

  10. CONFORMAL BLOCKS, FUSION RULES AND THE VERLINDE FORMULA

    E-Print Network [OSTI]

    Beauville, Arnaud

    CONFORMAL BLOCKS, FUSION RULES AND THE VERLINDE FORMULA Arnaud Beauville Abstract. A Rational the dimension of these vector spaces. For some particular RCFTs associated to a compact Lie group G (the WZW of the spaces are encoded in a finite-dimensional Z-algebra, the fusion ring of the theory; everything can

  11. AN EXACT RAMSEY PRINCIPLE FOR BLOCK SEQUENCES CHRISTIAN ROSENDAL

    E-Print Network [OSTI]

    Rosendal, Christian

    AN EXACT RAMSEY PRINCIPLE FOR BLOCK SEQUENCES CHRISTIAN ROSENDAL Abstract. We prove an exact, i space theory seem far from exhausted (for applications see, e.g., [5, 4]). Gowers' result is a Ramsey theoretic statement for Banach spaces that cleverly combines Ramsey theory and game theory to com- pensate

  12. A P-5 Nuclear Dialogue: Concept, Building Blocks, and Implementation

    E-Print Network [OSTI]

    #12;A P-5 Nuclear Dialogue: Concept, Building Blocks, and Implementation Paul I. Bernstein, biological, radiological, nuclear, and high explosives) by providing capabilities to reduce, eliminate affirmed "America's intention to seek the peace and security of a world without nuclear weapons" and stated

  13. Centre for Software Certification Formalizing and Verifying Function Blocks

    E-Print Network [OSTI]

    Lawford, Mark

    and effective guidelines as to what constitutes acceptable evidence of software quality, and how to achieve itMcMaster Centre for Software Certification Formalizing and Verifying Function Blocks using TabularMaster Centre for Software Certification The Need for Certification Software is essential to more and more

  14. Energy Efficiency and Conservation Block Grant Program Fact Sheet

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy’s (DOE) Energy Efficiency and Conservation Block Grant (EECBG) program represents a Presidential priority to invest in the cheapest, cleanest and most reliable energy technologies we have – energy efficiency and conservation – which can be deployed immediately.

  15. Kronecker Square Roots and The Block vec Matrix

    E-Print Network [OSTI]

    Ignacio Ojeda

    2013-11-09

    Using the block vec matrix, I give a necessary and sufficient condition for factorization of a matrix into the Kronecker product of two other matrices. As a consequence, I obtain an elementary algorithmic procedure to decide whether a matrix has a square root for the Kronecker product.

  16. Rheological properties characterization of styrene-isoprene-styrene block copolymers

    E-Print Network [OSTI]

    Petta, Jason

    -isoprene-styrene triblock­ Block copolymers: styrene-isoprene-styrene triblock http://www.plasticstech.info/processes/extrusion/blown -film-extrusion/ http://www.beechmontcrest.com/plastic_injection_molding_1.htm http oil · Compression at T = 140HC FD ­ flow direction LD ­ loading direction courtesy of S.B. Myers

  17. A JACOBI METHOD BY BLOCKS ON A MESH OF PROCESSORS

    E-Print Network [OSTI]

    Giménez, Domingo

    A JACOBI METHOD BY BLOCKS ON A MESH OF PROCESSORS Domingo Gim'enez 1 , Vicente Hern'andez 2\\Lambda of the Jacobi method to solve the symmetric eigenvalue problem on a mesh of processors. To solve this problem Jacobi method for solving the symmetric eigen­ value problem for distributed memory parallel computers

  18. A JACOBI METHOD BY BLOCKS ON A MESH OF PROCESSORS

    E-Print Network [OSTI]

    van de Geijn, Robert A.

    A JACOBI METHOD BY BLOCKS ON A MESH OF PROCESSORS Domingo Gim'enez 1 , Vicente Hern'andez 2: 34 68 364151 1 #12; Abstract In this paper, we study the parallelization of the Jacobi method Jacobi method for solving the symmetric eigen­ value problem for distributed memory parallel computers

  19. Monochromatic and random wave breaking at blocking points

    E-Print Network [OSTI]

    Kirby, James T.

    ; published 4 July 2002. [1] In this paper we study the energy dissipation due to current-limited waveMonochromatic and random wave breaking at blocking points Arun Chawla Center for Coastal and Land and Technology, Portland, Oregon, USA James T. Kirby Center for Applied Coastal Research, University of Delaware

  20. Solid-State NMR Investigation of Block Copolymer Electrolyte Dynamics

    E-Print Network [OSTI]

    Sadoway, Donald Robert

    Solid-State NMR Investigation of Block Copolymer Electrolyte Dynamics D. J. Harris,*, T. J in solid polymer electrolytes. The electrolytic properties of lithium salt-doped poly(ethyl- ene oxide- vored candidates for polymer electrolytes.1,2 Some of the primary applications for polymer electrolyte

  1. Residual Reconstruction for Block-Based Compressed Sensing of Video

    E-Print Network [OSTI]

    Fowler, James E.

    -sensing reconstruction for still images is adapted to video. Incorporating reconstruction from a residual arising from thresholding within the framework introduced in [2]. The term block-based CS (BCS) sampling with smooth] revealed that BCS-SPL reconstruction usually offers at least the same quality of recovery as does other

  2. OXYGEN BLOCK IN THE MAIN -STEM WILLAMETTE RIVER

    E-Print Network [OSTI]

    ^hly publicized run of spring-chinook salmon. Pollution of the Willamette River is a problem that has receivedOXYGEN BLOCK IN THE MAIN -STEM WILLAMETTE RIVER i.iiit' I'.iological Labordtory B R A tl Y OCT 9-STEM WILIA^TETTE RIVER By Frederic F. Fish In Charge, Western Fish-Cultural Investigations and Richard A

  3. Triathlon of Lightweight Block Ciphers for the Internet of Things

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Triathlon of Lightweight Block Ciphers for the Internet of Things Daniel Dinu , Yann Le Corre to the question of how well these ciphers are suited to secure the Internet of Things (IoT). The benchmarking Introduction The Internet of Things (IoT) is a frequently-used term to describe the currently ongoing evolution

  4. Revisiting Dedicated and Block Cipher based Hash Functions Anupam Pattanayak

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Revisiting Dedicated and Block Cipher based Hash Functions Anupam Pattanayak Computer Science the compression function from different angles. Two major categories of hash functions are: dedicated hash in this paper. Two dedicated has functions from MD4 family - MD4, and SHA-256 constructions have been detailed

  5. Method of forming oriented block copolymer line patterns, block copolymer line patterns formed thereby, and their use to form patterned articles

    DOE Patents [OSTI]

    Russell, Thomas P.; Hong, Sung Woo; Lee, Doug Hyun; Park, Soojin; Xu, Ting

    2015-10-13

    A block copolymer film having a line pattern with a high degree of long-range order is formed by a method that includes forming a block copolymer film on a substrate surface with parallel facets, and annealing the block copolymer film to form an annealed block copolymer film having linear microdomains parallel to the substrate surface and orthogonal to the parallel facets of the substrate. The line-patterned block copolymer films are useful for the fabrication of magnetic storage media, polarizing devices, and arrays of nanowires.

  6. Periodic nanostructures from self assembled wedge-type block-copolymers

    DOE Patents [OSTI]

    Xia, Yan; Sveinbjornsson, Benjamin R.; Grubbs, Robert H.; Weitekamp, Raymond; Miyake, Garret M.; Piunova, Victoria; Daeffler, Christopher Scot

    2015-06-02

    The invention provides a class of wedge-type block copolymers having a plurality of chemically different blocks, at least a portion of which incorporates a wedge group-containing block providing useful properties. For example, use of one or more wedge group-containing blocks in some block copolymers of the invention significantly inhibits chain entanglement and, thus, the present block copolymers materials provide a class of polymer materials capable of efficient molecular self-assembly to generate a range of structures, such as periodic nanostructures and microstructures. Materials of the present invention include copolymers having one or more wedge group-containing blocks, and optionally for some applications copolymers also incorporating one or more polymer side group-containing blocks. The present invention also provides useful methods of making and using wedge-type block copolymers.

  7. Manipulating Interfaces through Surface Confinement of Poly(glycidyl methacrylate)-block-poly(vinyldimethylazlactone), a Dually Reactive Block Copolymer

    SciTech Connect (OSTI)

    Lokitz, Bradley S; Wei, Jifeng; Hinestrosa Salazar, Juan P; Ivanov, Ilia N; Browning, James B; Ankner, John Francis; Kilbey, II, S Michael; Messman, Jamie M

    2012-01-01

    The assembly of dually reactive, well-defined diblock copolymers incorporating the chemoselective/functional monomer, 4,4-dimethyl-2-vinylazlactone (VDMA) and the surface-reactive monomer glycidyl methacrylate (GMA) is examined to understand how competition between surface attachment and microphase segregation influences interfacial structure. Reaction of the PGMA block with surface hydroxyl groups not only anchors the copolymer to the surface, but limits chain mobility, creating brush-like structures comprising PVDMA blocks, which contain reactive azlactone groups. The block copolymers are spin coated at various solution concentrations and annealed at elevated temperature to optimize film deposition to achieve a molecularly uniform layer. The thickness and structure of the polymer thin films are investigated by ellipsometry, infrared spectroscopy, and neutron reflectometry. The results show that deposition of PGMA-b-PVDMA provides a useful route to control film thickness while preserving azlactone groups that can be further modified with biotin-poly(ethylene glycol)amine to generate designer surfaces. The method described herein offers guidance for creating highly functional surfaces, films, or coatings through the use of dually reactive block copolymers and postpolymerization modification.

  8. Origin of oxygen species in Titan's atmosphere S. M. Horst,1

    E-Print Network [OSTI]

    Yelle, Roger V.

    that the main nitrogen- and carbon- bearing species in the solar nebula were either N2 and CO or NH3 and CH4- rated into Titan as it accreted [Owen, 1982]. This hypothesis also implies that CO was the main carbon-bearing

  9. Technical Sessions W. F. Dabberdt, C. ~,1artin, H. L. Cole, J. Dudhia, T. Horst,

    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 AdministrationRobust,Field-effectWorking With U.S. Coal StocksSuppliersmillion Technical SessionsM.P.S.T.W. F.

  10. Blocked impurity band hybrid infrared focal plane arrays for astronomy

    SciTech Connect (OSTI)

    Reynolds, D.B.; Seib, D.H.; Stetson, S.B.; Herter, T.; Rowlands, N.; Schoenwald, J.

    1989-02-01

    High-performance infrared hybrid focal plane arrays using 10 x 50 element Si:As Blocked-Impurity-Band (BIB) detectors (cut-off wavelength = 28 ..mu..m) and matching switched MOSFET multiplexers have been developed and characterized for space astronomy. Use of impurity band conduction technology provides detectors which are nuclear radiation hard and free of the many anomalies associated with conventional silicon photoconductive detectors. Emphasis in this paper is on recent advances in detector material quality which have led to significantly improved detector and hybrid characteristics. Results demonstrating increase quantum efficiency (particular at short wavelength infrared), obtained by varying the Blocked-Impurity-Band detector properties (infrared active layer thickness and arsenic doping profile), are summarized. Read noise and dark current for different temperatures have been measured and are also described. The hybrid array performance achieved clearly demonstrates that BIB detectors are well suited for use in astronomical instrumentation.

  11. EIS-0006: Wind Turbine Generator System, Block Island, Rhode Island

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy prepared this EIS to evaluate the environmental impacts of installing and operating a large experimental wind turbine, designated the MOD-OA, which is proposed to be installed on a knoll in Rhode Island's New Meadow Hill Swamp, integrated with the adjacent Block Island Power Company power plant and operated to supply electricity to the existing utility network.

  12. Coefficient quantization effects in block state variable digital filters 

    E-Print Network [OSTI]

    Lee, Kab Joo

    1991-01-01

    COEFFICIENT QUANTIZATION EFFECTS IN BLOCK STATE VARIABLE DIGITAL FILTERS A Thesis by KAB JOO LEE Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1991 Major Subject: Electrical Engineering COEFFICIENT QIJANTIZATIOU EFFECTS IN l3LOCI~ STATE VARIABLE DIGITAL FILTERS A Thesis hs IiAB JOO LEE Approved as to style and content by: WVilliam G. )3liss (Chair of Comnaittee) Norman C...

  13. Radical-cured block copolymer-modified thermosets

    SciTech Connect (OSTI)

    Redline, Erica M.; Francis, Lorraine F.; Bates, Frank S.

    2013-01-10

    Poly(ethylene-alt-propylene)-b-poly(ethylene oxide) (PEP-PEO) diblock copolymers were synthesized and added at 4 wt % to 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (BisGMA), a monomer that cures using free radical chemistry. In separate experiments, poly(ethylene glycol) dimethacrylate (PEGDMA) was combined as a secondary monomer with BisGMA and the monomers were loaded with 4 wt % PEP-PEO. The diblock copolymers self-assembled into well-dispersed spherical micelles with PEP cores and PEO coronas. No appreciable change in the final extent of cure of the thermosets was caused by the addition of diblock copolymer, except in the case of BisGMA, where the addition of the block copolymer increased extent of cure by 12%. Furthermore, the extent of cure was increased by 29% and 37% with the addition of 25 and 50 wt % PEGDMA, respectively. Elastic modulus and fracture resistance were also determined, and the values indicate that the addition of block copolymers does not significantly toughen the thermoset materials. This finding is surprising when compared with the large increase in fracture resistance seen in block copolymer-modified epoxies, and an explanation is proposed.

  14. Nanopatterning of ultrananocrystalline diamond thin films via block copolymer lithography.

    SciTech Connect (OSTI)

    Ramanathan, M.; Darling, S. B.; Sumant, A. V.; Auciello, O.

    2010-07-01

    Nanopatterning of diamond surfaces is critical for the development of diamond-based microelectromechanical system/nanoelectromechanical system (MEMS/NEMS), such as resonators or switches. Micro-/nanopatterning of diamond materials is typically done using photolithography or electron beam lithography combined with reactive ion etching (RIE). In this work, we demonstrate a simple process, block copolymer (BCP) lithography, for nanopatterning of ultrananocrystalline diamond (UNCD) films to produce nanostructures suitable for the fabrication of NEMS based on UNCD. In BCP lithography, nanoscale self-assembled polymeric domains serve as an etch mask for pattern transfer. The authors used thin films of a cylinder-forming organic-inorganic BCP, poly(styrene-block-ferrocenyldimethylsilane), PS-b-PFS, as an etch mask on the surface of UNCD films. Orientational control of the etch masking cylindrical PFS blocks is achieved by manipulating the polymer film thickness in concert with the annealing treatment. We have observed that the surface roughness of UNCD layers plays an important role in transferring the pattern. Oxygen RIE was used to etch the exposed areas of the UNCD film underneath the BCP. Arrays of both UNCD posts and wirelike structures have been created using the same starting polymeric materials as the etch mask.

  15. Gas block mechanism for water removal in fuel cells

    DOE Patents [OSTI]

    Issacci, Farrokh; Rehg, Timothy J.

    2004-02-03

    The present invention is directed to apparatus and method for cathode-side disposal of water in an electrochemical fuel cell. There is a cathode plate. Within a surface of the plate is a flow field comprised of interdigitated channels. During operation of the fuel cell, cathode gas flows by convection through a gas diffusion layer above the flow field. Positioned at points adjacent to the flow field are one or more porous gas block mediums that have pores sized such that water is sipped off to the outside of the flow field by capillary flow and cathode gas is blocked from flowing through the medium. On the other surface of the plate is a channel in fluid communication with each porous gas block mediums. The method for water disposal in a fuel cell comprises installing the cathode plate assemblies at the cathode sides of the stack of fuel cells and manifolding the single water channel of each of the cathode plate assemblies to the coolant flow that feeds coolant plates in the stack.

  16. Flow controlled solvent vapor annealing of block copolymers for lithographic applications

    E-Print Network [OSTI]

    Gotrik, Kevin Willy

    2013-01-01

    Self-assembly of block copolymer thin-films may provide an inexpensive alternative to patterning lithographic features below the resolution limits of traditional optical methods. Block copolymers (BCPs) are polymers made ...

  17. Block copolymer photonic crystals : towards self-assembled active optical elements

    E-Print Network [OSTI]

    Yoon, Jongseung

    2006-01-01

    Block copolymers have proven to be a unique materials platform for easily fabricated large-area photonic crystals. While the basic concept of block copolymer based photonic band gap materials has been well demonstrated, ...

  18. Building Blocks for Mobile Games : A multiplayer framework for App Inventor for Android

    E-Print Network [OSTI]

    Magnuson, Bill

    2010-01-01

    Building Blocks for Mobile Games is a client-server multiplayer game-building-framework for the App Inventor for Android platform. The Building Blocks for Mobile Games multiplayer framework includes an App Inventor component ...

  19. A non-blocking buffer mechanism for real-time event message communication

    E-Print Network [OSTI]

    Kim, KHK

    2006-01-01

    A Non-Blocking Buffer Mechanism for Real-Time Event Messagecomputing systems. An interaction mechanism, called the non-blocking writer (NBW) mechanism and invented by Kopetz, is

  20. Kinematically consistent, elastic block model for the eastern Mediterranean constrained by GPS measurements

    E-Print Network [OSTI]

    Lawrence, Shawn A. (Shawn Adam), 1975-

    2003-01-01

    I use a Global Positioning System (GPS) velocity field to constrain block models of the eastern Mediterranean and surrounding regions that account for the angular velocities of constituent blocks and elastic strain ...

  1. Fluids migration and dynamics of a blocks-and-faults system

    E-Print Network [OSTI]

    1910-70-11

    Keywords: earthquake catalog, block model, fault, tectonic structure, fluid, fil- ...... nal vertical fault near upper vertices of adjacent internal blocks, and formation of ... acts near the right external vertical fault: fractures filled in with water emerge ...

  2. Micro-and macromechanics of single crystal and polygrannular lamellar block copolymers

    E-Print Network [OSTI]

    Tzianetopoulou, Theodora, 1974-

    2007-01-01

    Block copolymers (BCPs) are a relatively new class of thermoplastic elastomers. Their macromolecular chain consists of covalently bonded repeating blocks of thermoplastic and elastomeric molecular chains. When given the ...

  3. Effect of polymer chemistry on globular protein–polymer block copolymer self-assembly

    E-Print Network [OSTI]

    Chang, Dongsook

    Bioconjugates of the model red fluorescent protein mCherry and synthetic polymer blocks with different hydrogen bonding functionalities show that the chemistry of the polymer block has a large effect on both ordering ...

  4. On Modes of Operations of a Block Cipher for Authentication and Authenticated Encryption

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    of operations of a block cipher to achieve the rele- vant goals. A variety of schemes suitable for specific

  5. 3D seismic interpretation, reservoir characteristics and petroleum prospects for South Marsh Island OCS Blocks, Gulf of Mexico 

    E-Print Network [OSTI]

    Duan, Ling

    2003-01-01

    interpretation has been carried out for the entire area. The objectives of this study are to conduct 3D seismic interpretation, to build a depositional environment model that encompasses the different sedimentary facies and sequence stratigraphic framework...

  6. SPEK: A Storage Performance Evaluation Kernel Module for Block Level Storage Systems under

    E-Print Network [OSTI]

    Yang, Qing "Ken"

    1 SPEK: A Storage Performance Evaluation Kernel Module for Block Level Storage Systems under Faulty), for evaluating the performance of block-level storage systems in the presence of faults as well as under normal operations. SPEK can work on both Direct Attached Storage (DAS) and block level networked storage systems

  7. SPEK: A Storage Performance Evaluation Kernel Module for Block Level Storage Systems

    E-Print Network [OSTI]

    He, Xubin "Ben"

    SPEK: A Storage Performance Evaluation Kernel Module for Block Level Storage Systems Ming Zhang storage systems at block level. It can be used for both DAS (Direct Attached Storage) and block level networked storage systems. Each SPEK tool consists of a controller, several workers, and one or more probers

  8. On the structure of 1-designs with at most two block intersection numbers

    E-Print Network [OSTI]

    Queen Mary, University of London

    On the structure of 1-designs with at most two block intersection numbers John Arhin School, 2007 Abstract We introduce the notion of an unrefinable decomposition of a 1-design with at most two block intersection numbers, which is a certain decomposition of the 1-designs collection of blocks

  9. Impossible Differential Cryptanalysis of the Lightweight Block Ciphers TEA, XTEA and

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Impossible Differential Cryptanalysis of the Lightweight Block Ciphers TEA, XTEA and HIGHT Jiazhe mqwang@sdu.edu.cn Abstract. TEA, XTEA and HIGHT are lightweight block ciphers with 64-bit block sizes, modular addition and shift/rotation. TEA and XTEA are Feistel ciphers with 64 rounds de- signed by Needham

  10. Differential Fault Attack on the PRINCE Block Ling Song, Lei Hu

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Differential Fault Attack on the PRINCE Block Cipher Ling Song, Lei Hu State Key Laboratory {lsong,hu}@is.ac.cn Abstract. PRINCE is a new lightweight block cipher proposed at the ASIACRYPT'2012. Key words: lightweight cipher, PRINCE block cipher, differential fault attack 1 Introduction The idea

  11. Non-crosslinked, amorphous, block copolymer electrolyte for batteries

    DOE Patents [OSTI]

    Mayes, Anne M.; Ceder, Gerbrand; Chiang, Yet-Ming; Sadoway, Donald R.; Aydinol, Mehmet K.; Soo, Philip P.; Jang, Young-Il; Huang, Biying

    2006-04-11

    Solid battery components are provided. A block copolymeric electrolyte is non-crosslinked and non-glassy through the entire range of typical battery service temperatures, that is, through the entire range of at least from about 0.degree. C. to about 70.degree. C. The chains of which the copolymer is made each include at least one ionically-conductive block and at least one second block immiscible with the ionically-conductive block. The chains form an amorphous association and are arranged in an ordered nanostructure including a continuous matrix of amorphous ionically-conductive domains and amorphous second domains that are immiscible with the ionically-conductive domains. A compound is provided that has a formula of Li.sub.xM.sub.yN.sub.zO.sub.2. M and N are each metal atoms or a main group elements, and x, y and z are each numbers from about 0 to about 1. y and z are chosen such that a formal charge on the M.sub.yN.sub.z portion of the compound is (4-x). In certain embodiments, these compounds are used in the cathodes of rechargeable batteries. The present invention also includes methods of predicting the potential utility of metal dichalgogenide compounds for use in lithium intercalation compounds. It also provides methods for processing lithium intercalation oxides with the structure and compositional homogeneity necessary to realize the increased formation energies of said compounds. An article is made of a dimensionally-stable, interpenetrating microstructure of a first phase including a first component and a second phase, immiscible with the first phase, including a second component. The first and second phases define interphase boundaries between them, and at least one particle is positioned between a first phase and a second phase at an interphase boundary. When the first and second phases are electronically-conductive and ionically-conductive polymers, respectively, and the particles are ion host particles, the arrangement is an electrode of a battery.

  12. Robot task planning in a non-ideal blocks world 

    E-Print Network [OSTI]

    Rangadass, Vasudev

    1988-01-01

    A-F6 ON-FACE: A-F1 HAS-ON-TOP: B ON-TOP-OF: D DISPLAY: CUBE-DISPLAY-FUNCTION COLOR: RED LENGTH: 12 BREADTH: 9 HEIGHT: 10 X: 10. 4 Y: 23. 5 Z: 12. 0 DENSITY: 2. 3 f In our system, we restrict our world objects to contain prismatic objects... for suggesting this topic . TABLE OF CONTENTS CHAPTER INTRODUCTION Page 1. 1 1. 2 1. 3 1. 4 1. 5 1. 6 Overview of Task Planning Domain and Scope of Work Blocks World Vs Prism World Analysis of Examples Overview of Thesis Comparison With Related...

  13. A spring-block model for Barkhausen noise

    E-Print Network [OSTI]

    K. Kovacs; Y. Brechet; Z. Neda

    2004-07-15

    A simple mechanical spring-block model is introduced for studying magnetization phenomena and in particularly the Barkhausen noise. The model captures and reproduces the accepted microscopic picture of domain wall movement and pinning. Computer simulations suggest that this model is able to reproduce the main characteristics of hysteresis loops and Barkhausen jumps. In the thermodynamic limit the statistics of the obtained Barkhausen jumps follows several scaling laws, in qualitative agreement with the experimental results. The simplicity of the model and the invoked mechanical analogies makes it attractive for computer simulations and pedagogical purposes.

  14. Block Copolymer Separators for Lithium Batteries | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels Researchof Energy|Make6, 2015Multi-phase Geophysical andBlock

  15. Deuteration Can Impact Micellization Pressure and Cloud Pressure of Polystyrene-block-polybutadiene and Polystyrene-block-polyisoprene in Compressible Propane

    SciTech Connect (OSTI)

    Winoto, Winoto; Shen, Youqin; Radosz, Maciej; Hong, Kunlun; Mays, Jimmy

    2009-01-01

    The deuterated homopolymers and their corresponding polystyrene-block-polybutadiene and polystyrene-block-polyisoprene copolymers require lower cloud pressures than their hydrogenous analogues to dissolve in a compressible alkane solvent, such as propane. For symmetric diblocks, deuteration reduces the micellization pressure. By contrast, for asymmetric diblocks with a long diene block relative to the styrene block, deuteration can increase the micellization pressure. All in all, however, the deuteration effects, while measurable, do not qualitatively change the principal diblock properties in compressible propane solutions, such as pressure-induced micelle decomposition, micelle formation and micelle size, and their temperature dependence. Therefore, isotope labeling should be a useful approach to neutron-scattering characterization for styrene-diene block copolymers in compressible alkane systems.

  16. Single Helix to Double Gyroid in Chiral Block Copolymers

    SciTech Connect (OSTI)

    C Chen; H Hsueh; Y Chiang; R Ho; S Akasaka; H Hasegawa

    2011-12-31

    An order-order phase transition of chiral block copolymers (BCPs*) from single helix to double gyroid (H* {yields} G) through a nucleation and growth process was demonstrated. The H* and G phases can be obtained by solution casting from fast and slow solvent evaporation, respectively, suggesting that the H* phase is a metastable phase. Consequently, the coexistence of H* and G phases can be found in the solution-cast samples from intermediate solvent evaporation. To truly examine the transition mechanism of the H* {yields} G, electron tomography was carried out to directly visualize the morphological evolution in real space, in particular, the transition zone at interface. Unlike the mechanisms for the transitions of block copolymers (BCPs) by considering the interdomain spacing matching, a significant mismatch in the lattices for the H* {yields} G was found. Consequently, the transition may require an adjustment on the geometric dimensions to justify corresponding lattice mismatch. As a result, the morphological observations from electron tomography offer new insights into BCP phase transitions.

  17. Microphase transitions of block copolymer/homopolymer under shear flow

    E-Print Network [OSTI]

    Y. Guo; J. Zhang; B. Wang; H. Wu; M. Sun; J. Pan

    2015-06-26

    Cell dynamics simulation is used to investigate the phase behavior of block copolymer/homopolymer mixture subjected to a steady shear flow. Phase transitions occur from transverse to parallel and then to perpendicular lamellar structure with an increase of shear rate and this is the result of interaction between the shear flow and the concentration fluctuation. Rheological properties, such as normal stress differences and shear viscosity, are all closely related with the direction of the lamellae. Furthermore, we specifically explore the phase behavior and the order parameter under weak and strong shear of two different initial states, and realize the importance of the thermal history. It is necessary to apply the shear field at the appropriate time if we want to get what we want. These results provide an easy method to create ordered, defect-free materials in experiment and engineering technology through imposing shear flow.

  18. Sealed Battery Block Provided With A Cooling System

    DOE Patents [OSTI]

    Verhoog, Roelof (Bordeaux, FR); Barbotin, Jean-Loup (Pompignac, FR)

    1999-11-16

    The present invention relates to a sealed battery block operating at a pressure of at least 1 bar relative, the battery including a container made of a plastics material and made up of a lid and of a case subdivided into wells by at least one partition, said battery being provided with a cooling system including two cheek plates made of a plastics material and co-operating with the outside faces of respective ones of two opposite walls of said case, each cheek plate co-operating with the corresponding wall to define a compartment provided with a plurality of ribs forming baffles for fluid flow purposes, and with an inlet orifice and an outlet orifice for the fluid, said battery being characterized in that each of said ribs extends in a direction that forms an angle relative to the plane of said partition lying in the range 60.degree. to 90.degree..

  19. Linked supramolecular building blocks for enhanced cluster formation

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

    McLellan, Ross; Palacios, Maria A.; Beavers, Christine M.; Teat, Simon J.; Piligkos, Stergios; Brechin, Euan K.; Dalgarno, Scott J.

    2015-01-09

    Methylene-bridged calix[4]arenes have emerged as extremely versatile ligand supports in the formation of new polymetallic clusters possessing fascinating magnetic properties. Metal ion binding rules established for this building block allow one to partially rationalise the complex assembly process. The ability to covalently link calix[4]arenes at the methylene bridge provides significantly improved control over the introduction of different metal centres to resulting cluster motifs. Clusters assembled from bis-calix[4]arenes and transition metal ions or 3d-4f combinations display characteristic features of the analogous calix[4]arene supported clusters, thereby demonstrating an enhanced and rational approach towards the targeted synthesis of complex and challenging structures.

  20. Origami building blocks: generic and special 4-vertices

    E-Print Network [OSTI]

    Scott Waitukaitis; Martin van Hecke

    2015-07-30

    Four rigid panels connected by hinges that meet at a point form a 4-vertex, the fundamental building block of origami metamaterials. Here we show how the geometry of 4-vertices, given by the sector angles of each plate, affects their folding behavior. For generic vertices, we distinguish three vertex types and two subtypes. We establish relationships based on the relative sizes of the sector angles to determine which folds can fully close and the possible mountain-valley assignments. Next, we consider what occurs when sector angles or sums thereof are set equal, which results in 16 special vertex types. One of these, flat-foldable vertices, has been studied extensively, but we show that a wide variety of qualitatively different folding motions exist for the other 15 special and 3 generic types. Our work establishes a straightforward set of rules for understanding the folding motion of both generic and special 4-vertices and serves as a roadmap for designing origami metamaterials.

  1. A Failure and Structural Analysis of Block Copolymer Electrolytes for Rechargeable Lithium Metal Batteries

    E-Print Network [OSTI]

    Stone, Gregory Michael

    2012-01-01

    for Rechargeable Lithium Metal Batteries By Gregory Michaelfor Rechargeable Lithium Metal Batteries by Gregory Michaelin rechargeable lithium metal batteries. The block copolymer

  2. Deformation of the Gorda Block of the Juan de Fuca Plate 

    E-Print Network [OSTI]

    Stoddard, Paul Richard

    1982-01-01

    , produc- ing the marked change in the azimuth of the magnetic linea- tions (Figure 3). 2) The central portion of the block is comprised of rigid blocks which rotate clockwise and slip past each other on northeast- trending left-lateral faults... 3, page 7) was proposed by Riddihough (1980) to explain the magnetic anomaly pattern of the Gorda Block. The Gorda Rise can be divided into three distinct segments. The magnetic linea- tions east of the rise, on the Gorda Block, can be divided...

  3. Weight Distribution of a Class of Binary Linear Block Codes Formed from RCPC Codes

    E-Print Network [OSTI]

    Shen, Yushi Dr.; Cosman, Pamela C; Milstein, Laurence B

    2006-01-01

    On the weight distribution of terminated convolutionalViterbi, “On the weight distribution of linear block codes9, SEPTEMBER 2005 Weight Distribution of a Class of Binary

  4. Microsoft Word - FINAL Follow up L2R_PO_Decision_BlockRequest...

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

    entitled "Pend Oreille Conversion Block Analysis" summarizing BPA's rates and risk analysis based on the BP-14 Initial Proposal rates. WPAG requested that BPA "set some type...

  5. Data Partitioning for Reconfigurable Architectures with Distributed Block RAM Wenrui Gong Gang Wang Ryan Kastner

    E-Print Network [OSTI]

    Sherwood, Tim

    Data Partitioning for Reconfigurable Architectures with Distributed Block RAM Wenrui Gong Gang Wang {gong, wanggang, kastner}@ece.ucsb.edu Abstract Modern, high performance reconfigurable architectures

  6. Synthesis and Characterization of Simultaneous Electronic and Ionic Conducting Block Copolymers for Lithium Battery Electrodes

    E-Print Network [OSTI]

    Patel, Shrayesh

    2013-01-01

    Copolymer: Application in Lithium Battery Electrodes. Angew.Schematic of the Proposed lithium battery electrode with aBlock Copolymers for Lithium Battery Electrodes By Shrayesh

  7. Collapse transitions in thermosensitive multi-block copolymers: A Monte Carlo study

    SciTech Connect (OSTI)

    Rissanou, Anastassia N.; Tzeli, Despoina S.; Anastasiadis, Spiros H.; Bitsanis, Ioannis A.

    2014-05-28

    Monte Carlo simulations are performed on a simple cubic lattice to investigate the behavior of a single linear multiblock copolymer chain of various lengths N. The chain of type (A{sub n}B{sub n}){sub m} consists of alternating A and B blocks, where A are solvophilic and B are solvophobic and N = 2nm. The conformations are classified in five cases of globule formation by the solvophobic blocks of the chain. The dependence of globule characteristics on the molecular weight and on the number of blocks, which participate in their formation, is examined. The focus is on relative high molecular weight blocks (i.e., N in the range of 500–5000 units) and very differing energetic conditions for the two blocks (very good—almost athermal solvent for A and bad solvent for B). A rich phase behavior is observed as a result of the alternating architecture of the multiblock copolymer chain. We trust that thermodynamic equilibrium has been reached for chains of N up to 2000 units; however, for longer chains kinetic entrapments are observed. The comparison among equivalent globules consisting of different number of B-blocks shows that the more the solvophobic blocks constituting the globule the bigger its radius of gyration and the looser its structure. Comparisons between globules formed by the solvophobic blocks of the multiblock copolymer chain and their homopolymer analogs highlight the important role of the solvophilic A-blocks.

  8. Resonant Soft X-Ray Scattering of Tri-Block Copolymers

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

    biomolecular materials to structured electrolytes for lithum-ion batteries and supercapacitors. Drawings of 12 possible morphologies Varying morphologies of linear tri-block...

  9. Resonant Soft X-Ray Scattering of Tri-Block Copolymers

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

    principle, tri-block copolymers (tri-BCPs), consisting of three chemically distinct polymers covalently joined together at the ends of each polymer chain, can serve as scaffolds...

  10. Nanostructure of Solid Precipitates Obtained by Expansion of Polystyrene-block-Polybutadiene Solutions in Near Critical Propane: Block Ratio and Micellar Solution Effects

    SciTech Connect (OSTI)

    Green, Jade; Tyrrell, Zachary; Radosz, Maciej; Hong, Kunlun; Mays, Jimmy

    2011-01-01

    In contrast to incompressible liquid solutions, compressible near-critical solutions of block copolymers allow for controlling rapid structure transformations with pressure alone. For example, when dissolved in near-critical propane, polystyrene-block-polybutadiene can form a random molecular solution at high pressures, a micellar solution at moderate pressures, and a solvent-free precipitate at low pressures. In contrast to the unstructured virgin copolymer, such a propane-treated precipitate rapidly self-assembles toward structures characteristic of equilibrated block copolymers, such as lamellae, spheres, or cylinders, which depend on the block ratio rather than on the decompression rate or temperature, at least within the rate and temperature ranges investigated in this work. At lower temperatures, however, say below 40 C, glass transition of the styrene-butadiene diblocks can inhibit independent structure formation, while crystallization of their hydrogenated-butadiene analogues can preserve the micellar-solution structure.

  11. Combinatorial Block Copolymer Ordering on Tunable Rough Substrates

    SciTech Connect (OSTI)

    Kulkarni, Manish M.; Yager, Kevin G.; Sharma, Ashutosh; Karim, Alamgir (IIT-India); (Akron); (BNL)

    2012-10-25

    Morphology control of block copolymer (BCP) thin films through substrate interaction via controlled roughness parameters is of significant interest for numerous high-tech applications ranging from solar cells to high-density storage media. While effects of substrate surface energy (SE) and roughness (R) on BCP morphology have been individually investigated, their synergistic effects have not been explored in any systematic manner. Interestingly, orientation response of BCP to changes in SE can be similar to what can be accomplished with variations in R. Here we present a novel approach for orienting lamellar BCP films of poly(styrene)-block-poly(methyl methacrylate) (PS-PMMA) on spin-coated xerogel (a dried gel of silica nanoparticle network) substrate with simultaneously tunable surface energy, {gamma}{sub s} {approx} 29-53 mJ/m{sup 2}, by UVO exposure and roughness, R{sub rms} {approx} 0.5-30 nm, by sol-gel processing steps of regulating the catalyst concentration and sol aging time. As in previous BCP orientation studies on 20 nm diameter monodisperse silica nanoparticle coated surface, we find a similar but broadened oscillatory BCP orientation behavior with film thickness due to the random rather than periodic rough surfaces. We also find that higher random roughness amplitude is not the necessary criteria for obtaining a vertical orientation of BCP lamellae. Rather, a high surface fractal dimension (D{sub f} > 2.4) of the rough substrate in conjunction with an optimal substrate surface energy {gamma}{sub s} {approx} 29 mJ/m{sup 2} results in 100% vertically oriented lamellar microdomains. The AFM measured film surface microstructure correlates well with the internal 3D BCP film structure probed by grazing incidence small-angle X-ray scattering (GISAXS) and rotational small-angle neutron scattering (SANS). In contrast to tunable self-assembled monolayer (SAM)-coated substrates, the xerogel films are very durable and retain their chemical properties over period of several months. These results also highlight importantly that BCP orientation control for nanotechnology is possible not only on specially prepared patterned substrates but also on industrially viable sol-gel substrates.

  12. Technical Note Comparing event-related and epoch analysis in blocked design fMRI

    E-Print Network [OSTI]

    Henson, Rik

    Technical Note Comparing event-related and epoch analysis in blocked design fMRI Andrea Mechelli August 2002 Abstract In this study we demonstrate that, even in blocked design fMRI, an event-related analysis may provide a more accurate model of the hemodynamic responses than an epoch-related analysis

  13. Evaluating the Design of an Audit Data Pseudonymizer Using Basic Building Blocks for Anonymity

    E-Print Network [OSTI]

    Flegel, Ulrich

    Evaluating the Design of an Audit Data Pseudonymizer Using Basic Building Blocks for Anonymity an audit data pseudonymization system as an example, we show how the APES approach for basic anonymity building blocks can be used to informally evaluate the design of a given anonymity system. As a by

  14. Motion Patches: Building Blocks for Virtual Environments Annotated with Motion Data

    E-Print Network [OSTI]

    Lee, Jehee

    Motion Patches: Building Blocks for Virtual Environments Annotated with Motion Data Kang Hoon Lee motion data can be transferred to the target environment. These building blocks annotated Myung Geol Choi Jehee Lee Seoul National University Motion capture from the source environment Building

  15. Category theory based solution for the building block replacement problem in materials design

    E-Print Network [OSTI]

    Spivak, David

    1 Category theory based solution for the building block replacement problem in materials design blocks, theory, modeling, mathematics, hierarchical materials Submitted to: Advanced Engineering be replaced by other molecular structures, such as weak van der Waals or hydrogen bonds, without compromising

  16. GMI and Mismatched-CSI Outage Exponents in MIMO Block-Fading Channels

    E-Print Network [OSTI]

    GMI and Mismatched-CSI Outage Exponents in MIMO Block-Fading Channels A. Taufiq Asyhari National then analyze the corresponding outage probability in the high signal-to-noise ratio regime. I. INTRODUCTION outage probability [1]. The majority of works on block-fading channels studied the outage probability

  17. On Outage Performance of Spectrum-Sharing Communication over M-Block Fading

    E-Print Network [OSTI]

    Shihada, Basem

    On Outage Performance of Spectrum-Sharing Communication over M-Block Fading AbdulRahman Alabbasi to the primary and secondary users. We minimize the secondary user's targeted outage probability over the block-fading channels. To protect the primary user, a statistical constraint on its targeted outage probability

  18. PRE-PRINT, IEEE TRANS. INFORM. TH. Outage Theorems for MIMO Block Fading

    E-Print Network [OSTI]

    Varanasi, Mahesh K.

    PRE-PRINT, IEEE TRANS. INFORM. TH. Outage Theorems for MIMO Block Fading Channels Narayan Prasad probability (FEP) of space-time codes and the outage probability over general block fading multi-input multi are defined for a given rate and it is shown that average FEPs arbitrarily close to the respective outage

  19. I...IIYITM MYIIION ANN A801t, MICH. Block I and II Mechanical and

    E-Print Network [OSTI]

    Rathbun, Julie A.

    and Thermal Design Block I (mandatory changes) ATM 253 2 1. Extend thermal plate to cover passive seismic cut5/Z/66 I...IIYITM MYIIION ANN A801t, MICH. Block I and II Mechanical and · Thermal Design NO. ATM 253 ,... 1 As a result of a design meeting; held Monday ZS April between G. Burton, L. Mc

  20. Improved Integral Cryptanalysis of FOX Block Wu Wenling, Zhang Wentao, and Feng Dengguo

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Improved Integral Cryptanalysis of FOX Block Cipher1 Wu Wenling, Zhang Wentao, and Feng Dengguo permutation of the blocks space. By using integral attack and collision-searching techniques efficient than previous in- tegral attack on FOX. The complexity of improved integral attack is 277.6 on 4

  1. Braiding and fusion properties of the Neveu-Schwarz super-conformal blocks

    E-Print Network [OSTI]

    Damian Chorazkiewicz; Leszek Hadasz

    2008-11-07

    We construct, generalizing appropriately the method applied by J. Teschner in the case of the Virasoro conformal blocks, the braiding and fusion matrices of the Neveu-Schwarz super-conformal blocks. Their properties allow for an explicit verification of the bootstrap equation in the NS sector of the N=1 supersymmetric Liouville field theory.

  2. Optimizing Kernel Block Memory Operations Michael Calhoun, Scott Rixner, Alan L. Cox

    E-Print Network [OSTI]

    Optimizing Kernel Block Memory Operations Michael Calhoun, Scott Rixner, Alan L. Cox Rice University Houston, TX 77005 {calhoun,rixner,alc}@rice.edu Abstract-- This paper investigates the performance of block memory operations in the operating system, including memory copies, page zeroing, interprocess

  3. Quantifying mountain block recharge by means of catchment-scale storage-discharge relationships

    E-Print Network [OSTI]

    Troch, Peter

    Quantifying mountain block recharge by means of catchment-scale storage-discharge relationships the importance of mountainous catchments for providing freshwater resources, especially in semi-arid regions, little is known about key hydrological processes such as mountain block recharge (MBR). Here we implement

  4. IEEE SIGNAL PROCESSING LETTERS, VOL. 5, NO. 6, JUNE 1998 129 Efficient Block Implementation of

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    IEEE SIGNAL PROCESSING LETTERS, VOL. 5, NO. 6, JUNE 1998 129 Efficient Block Implementation of the Decision Feedback Equalizer Kostas Berberidis, Member, IEEE, Thanasis A. Rontogiannis, and Sergios Theodoridis, Member, IEEE Abstract--In this letter, a new block adaptive decision feedback equalizer

  5. FORMAL SEMANTICS AND VERIFICATION OF DYNAMIC RELIABILITY BLOCK DIAGRAMS FOR SYSTEM RELIABILITY MODELING

    E-Print Network [OSTI]

    Xu, Haiping

    that DRBD provides a powerful tool for system reliability modeling, and our proposed verification approachFORMAL SEMANTICS AND VERIFICATION OF DYNAMIC RELIABILITY BLOCK DIAGRAMS FOR SYSTEM RELIABILITY-scale computer-based systems. KEY WORDS Reliability modeling, dynamic reliability block diagrams (DRBD), Object

  6. Block Cipher Speed and Energy Efficiency Records on the MSP430

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Block Cipher Speed and Energy Efficiency Records on the MSP430: System Design Trade-Offs for 16-bit nevertheless allow a range of implementation choices. The results set speed and energy efficiency records security or energy efficiency. Overall, many parameters of block ciphers are important to an embedded

  7. Accommodation Office Information Centre, Market Square Alcuin A and B Block A4

    E-Print Network [OSTI]

    Mitchener, Paul

    Accommodation Office · Information Centre, Market Square Alcuin A and B Block · A4 Alcuin C Block Services · Market Square Careers · Careers Building V8 Cash and Fees Office · Market Square Catalyst) Design Solutions · 5a Main Street D4 Development and Alumni Relations Office · Alumni House D4 Disability

  8. Suction effects in deep Boom clay block samples Pierre DELAGE 1

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Suction effects in deep Boom clay block samples Pierre DELAGE 1 , Trung-Tinh LE 1 , Anh-Minh TANG located at Mol (Belgium) called Boom clay, in the context of research into deep nuclear waste disposal. Suction effects in deep Boom clay block samples were investigated through the characterisation

  9. Equivalence Checking between Function Block Diagrams and C Programs Using HW-CBMC

    E-Print Network [OSTI]

    ://dslab.konkuk.ac.kr 2 Korea Atomic Energy Research Institute, 150 Deokjin, Yuseong Daejeon, 305-335, Republic of Korea such as nuclear power plants often use Function Block Diagrams (FBDs) to design embedded software. The design in safety critical systems such as nuclear power plants use Func- tion Block Diagrams (FBDs) to design

  10. Calculating Blocking Probabilities for Loss Networks Based on Probabilistic Graphical Models

    E-Print Network [OSTI]

    Tatikonda, Sekhar

    -product algorithm returns very accurate blocking proba- bilities and greatly outperforms the reduced load takes value 0 or 1 only, and multiservice if Ajk can take different positive integer values. Let Jk = {j is blocked and lost if, on any link j Jk, there are fewer than Ajk units of free resources. Otherwise

  11. Block-structured Adaptive Finite Volume Methods for Shock-Induced Combustion

    E-Print Network [OSTI]

    Deiterding, Ralf

    Block-structured Adaptive Finite Volume Methods for Shock-Induced Combustion Simulation Ralf-Induced Combustion Simulation 1 #12;Structure of the lectures Block-structured Adaptive Finite Volume Methods for Shock-Induced Combustion Simulation 2 #12;Structure of the lectures 1. Fundamentals of finite volume

  12. Insertion of a Two-Dimensional Iron-Chloride Network between Perovskite Blocks. Synthesis and

    E-Print Network [OSTI]

    Spinu, Leonard

    Insertion of a Two-Dimensional Iron-Chloride Network between Perovskite Blocks. Synthesis between the perovskite blocks of a double-layered Dion-Jacobson compound. The product, (FeCl)- LaNb2O7, contains iron coordinated by two apical oxygens from the perovskite layer and four in-plane chlorines

  13. Fast matrix algebra for dense matrices with rank-deficient off-diagonal blocks

    E-Print Network [OSTI]

    Martinsson, Gunnar

    CHAPTER 2 Fast matrix algebra for dense matrices with rank-deficient off-diagonal blocks Chapter whose off diagonal blocks are of low (numerical) rank. The primary focus is on matrix inversion, but algorithms for matrix-vector and matrix-matrix multiplication are also described. 2.1. Introduction All

  14. Demonstrations: baseball bat and blocks; shoot the can Text: Fishbane 3-4, 3-5

    E-Print Network [OSTI]

    Boal, David

    for block to hit the ground does not depend on the horizontal velocity of the block. Example The Coconut Shoot problem (a.k.a. the Monkey Shoot problem). Suppose that you are trying to knock a coconut from a tree by firing a cannon at it. If you line up the cannon so that it is aimed directly at the coconut

  15. Designs for the manufacture of manipulable plastic DNA/RNA building blocks for learning life science

    E-Print Network [OSTI]

    Lemanski, Bethany I

    2013-01-01

    The subject of this thesis is the design of custom injection-molded manipulable DNA building blocks for use in a hands-on life sciences educational kit. The new design of the DNA building blocks is meant to replace the ...

  16. Optimizing MLC-based STT-RAM Caches by Dynamic Block Size Reconfiguration

    E-Print Network [OSTI]

    Wong, Weng Fai

    Optimizing MLC-based STT-RAM Caches by Dynamic Block Size Reconfiguration Jianxing Wang, Pooja Roy that MLC STT-RAM can achieve 2× the storage density of SLC and thus improves system performance. In this paper, we propose an architectural design to dynamically reconfigure the cache block size for a MLC STT

  17. Self-doped block copolymer electrolytes for solid-state, rechargeable lithium batteries

    E-Print Network [OSTI]

    Sadoway, Donald Robert

    Self-doped block copolymer electrolytes for solid-state, rechargeable lithium batteries Donald R of Li to nearly unity in a solid polymer electrolyte, block copolymer materials have been prepared. Introduction The ideal electrolyte material for a solid-state battery would have the ionic conductivity

  18. ABC -A New Framework for Block Ciphers Uri Avraham1 Eli Biham1 Orr Dunkelman2

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    . In our work we borrow these new parameters introduced in HAIFA (i.e., a salt and a counter) to the world of block ciphers in order to protect against many security pitfalls. The ability to borrow new ideas fromABC - A New Framework for Block Ciphers Uri Avraham1 Eli Biham1 Orr Dunkelman2 1 Computer Science

  19. DPCM FOR QUANTIZED BLOCK-BASED COMPRESSED SENSING OF IMAGES Sungkwang Mun and James E. Fowler

    E-Print Network [OSTI]

    Fowler, James E.

    . The straightforward solution to incorporating quantiza- tion into the CS paradigm is simply to apply scalar quanti in blocks, i.e., block-based CS (BCS) [2­6]. In essence, at the sensor side of the system, rather than the dequantized residuals to produce the quantized CS measurements ready for BCS-based reconstruction. A key

  20. Linked PARAFAC/CP Tensor Decomposition and Its Fast Implementation for Multi-block

    E-Print Network [OSTI]

    Cichocki, Andrzej

    Linked PARAFAC/CP Tensor Decomposition and Its Fast Implementation for Multi-block Tensor Analysis we propose a new flexible group tensor analysis model called the linked CP tensor decomposition over existing models. Keywords: Tensor decompositions of multi-block data, PARAFAC/CP model, Group

  1. Perforated Layer Structures in Liquid Crystalline Rod-Coil Block Copolymers

    E-Print Network [OSTI]

    Wan, Xin-hua

    Perforated Layer Structures in Liquid Crystalline Rod-Coil Block Copolymers Kishore K. Tenneti of the tetragonal perforated layer structures in a series of rod- coil liquid crystalline block copolymers (BCPs microscopy (TEM) techniques were used to investigate these rod-coil molecules, and a perforated layer

  2. Jets and Orography: Idealized Experiments with Tip-Jets and Lighthill Blocking

    E-Print Network [OSTI]

    Jets and Orography: Idealized Experiments with Tip-Jets and Lighthill Blocking P.B. Rhines issue on Jets 15 June 2006 #12;2 ABSTRACT In this note we describe some qualitative features of the generation of jet-like concentrated circulations, wakes and blocks by simple mountain-like orography, both

  3. Polymer Segmental Cross-Correlations from Dielectric Relaxation Spectra of Block Copolymers

    E-Print Network [OSTI]

    George D. J. Phillies

    2011-02-21

    Dielectric relaxation spectra of block polymers containing sequential type-A dipoles are considered. Spectra of a specific set of block copolymers can be combined to isolate the dynamic cross-correlation between the motions of two distinct parts of the same polymer chain. Unlike past treatments of this problem, no model is assumed for the underlying polymer dynamics.

  4. Multi-block sulfonated poly(phenylene) copolymer proton exchange membranes

    DOE Patents [OSTI]

    Fujimoto, Cy H. (Albuquerque, NM); Hibbs, Michael (Albuquerque, NM); Ambrosini, Andrea (Albuquerque, NM)

    2012-02-07

    Improved multi-block sulfonated poly(phenylene) copolymer compositions, methods of making the same, and their use as proton exchange membranes (PEM) in hydrogen fuel cells, direct methanol fuel cells, in electrode casting solutions and electrodes. The multi-block architecture has defined, controllable hydrophobic and hydrophilic segments. These improved membranes have better ion transport (proton conductivity) and water swelling properties.

  5. Parallel Block Structured Adaptive Mesh Refinement on Graphics Processing Units

    SciTech Connect (OSTI)

    Beckingsale, D. A. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom); Gaudin, W. P. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom); Hornung, R. D. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Gunney, B. T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Gamblin, T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Herdman, J. A. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom); Jarvis, S. A. [Atomic Weapons Establishment (AWE), Aldermaston (United Kingdom)

    2014-11-17

    Block-structured adaptive mesh refinement is a technique that can be used when solving partial differential equations to reduce the number of zones necessary to achieve the required accuracy in areas of interest. These areas (shock fronts, material interfaces, etc.) are recursively covered with finer mesh patches that are grouped into a hierarchy of refinement levels. Despite the potential for large savings in computational requirements and memory usage without a corresponding reduction in accuracy, AMR adds overhead in managing the mesh hierarchy, adding complex communication and data movement requirements to a simulation. In this paper, we describe the design and implementation of a native GPU-based AMR library, including: the classes used to manage data on a mesh patch, the routines used for transferring data between GPUs on different nodes, and the data-parallel operators developed to coarsen and refine mesh data. We validate the performance and accuracy of our implementation using three test problems and two architectures: an eight-node cluster, and over four thousand nodes of Oak Ridge National Laboratory’s Titan supercomputer. Our GPU-based AMR hydrodynamics code performs up to 4.87× faster than the CPU-based implementation, and has been scaled to over four thousand GPUs using a combination of MPI and CUDA.

  6. Field Dependence of Blocking Temperature in Magnetite Nanoparticles

    E-Print Network [OSTI]

    G. F. Goya; M. P. Morales

    2011-03-22

    Spherical magnetite nanoparticles having average particle size = 5 nm have been synthesized by coprecipitation of Fe(II) and Fe(III) salts in KOH with Polyvinylalcohol (PVA). The resulting dry powder displayed superparamgnetic (SPM) behaviour at room temperature, with a transition to a blocked state at TB ~ 45 K for applied field Happ = 500 Oe. The effect of dipolar interactions was investigated by measuring the dependence of TB on the applied field Hap and driven ac field in susceptibility data. A thermally activated model has been used to fit the dynamic data to obtain the single-particle energy barriers Ea = KeffV, allowing us to estimate the contributions of dipolar interactions to the single-particle effective magnetic anisotropy Keff. We have measured the dependence of TB with Hap in order to draw the transition contours of a H-T diagram. Two different regimes are found for the (TB-T0) ~H{\\lambda} dependence at low and high fields, that can be understood within a pure SPM relaxation-time (N\\'eel-Brown) landscape. The TB(H) data shows a crossover from {\\lambda} = 2/3 to {\\lambda} ~2 for applied magnetic fields of \\approx 550 Oe.

  7. Vertical Profiles Of {sup 226}Ra, {sup 232}Th And {sup 40}K Activities In Rocks From The Irati Formation Of The Parana Sedimentary Basin, Southern Brazil

    SciTech Connect (OSTI)

    Ferreira, Ademar de O.; Bastos, Rodrigo O.; Appoloni, Carlos R. [Laboratorio de Fisica Nuclear Aplicada-Departamento de Fisica-CCE Universidade Estadual de Londrina-Campus Universitario Rodovia Celso Garcia Cid s/n, Cx. Postal 6001 86051-990 Londrina (Puerto Rico)

    2008-08-07

    Naturally occurring radioisotopes are present in different concentrations in sedimentary rocks, reflecting the origin of the sediments, the depositional environment, and more recent events such as weathering and erosion. Using a high-resolution {gamma}-ray spectrometry methodology, sedimentary rocks were measured to assess the concentration activities of the natural radioisotopes. The surveyed rocks are from the Irati formation in the Parana sedimentary basin, which are exposed by an abandoned, open-pit limestone mine, in the city of Sapopema, southern Brazil. The exposed vertical profile is 5 m, and its stratigraphy is represented by an alternation of limestone and bituminous shale (layers being a few decimeters thick), and some millimeter rhythm layers with limestone and bituminous shale laminas. Eleven samples were collected along this profile, each of them dried in the open air during 48 hours, sieved through 4 mm mesh and sealed in cylindrical recipients. Measurements were accomplished using a 66% relative efficiency HPGE detector connected to a standard gamma ray spectrometry electronic chain. The detector efficiency in the range of 60 to 1800 keV was carried out with the certified IAEA-385 sediment sample. The Lower Limit of Detection (LLD) to the system is 2.40 Bq{center_dot}kg{sup -1} for {sup 226}Ra, 1.84 Bq{center_dot}kg{sup -1} for {sup 232}Th and 4.20 Bq{center_dot}kg{sup -1} for {sup 40}K. Activity concentrations were determined for {sup 226}Ra (from 16.22 to 151.55 Bq{center_dot}kg{sup -1}), {sup 232}Th (from 2.93 to 56.12 Bq{center_dot}kg{sup -1}) and {sup 40}K (from 38.45 to 644.63 Bq{center_dot}kg{sup -1}). The layers enriched with organic matter presented the higher values of activity. The measured concentrations of the natural radioisotopes were lower for limestone samples (average values and respective deviations were 22.81{+-}0.22 Bq{center_dot}kg{sup -1} for {sup 226}Ra, 4.21{+-}0.07 Bq{center_dot}kg{sup -1} for {sup 232}Th, and 50.11{+-}0.82 Bq{center_dot}kg{sup -1} for {sup 40}K). Higher concentrations were measured for the bituminous shale samples (average values and respective deviations were 108.10{+-}12.17 Bq{center_dot}kg{sup -1} for {sup 226}Ra, 43.69{+-}0.30 Bq{center_dot}kg{sup -1} for {sup 232}Th, and 465.82{+-}3.99 Bq{center_dot}kg{sup -1} for {sup 40}K). The concentrations were intermediate for the rhythmite samples (average values and respective deviations were 50.69{+-}1.09 Bq{center_dot}kg{sup -1} for {sup 226}Ra, 7.63{+-}0.21 Bq{center_dot}kg{sup -1} for {sup 232}Th, and 85.96{+-}2.47 Bq{center_dot}kg{sup -1} for {sup 40}K). As the analyzed rocks are raw materials for the ceramic, cement and soil correction compound industries, the results of this work furnish data to estimate the contribution of these products to the general public's radiation exposure.

  8. Dynamical Analysis of Blocking Events: Spatial and Temporal Fluctuations of Covariant Lyapunov Vectors

    E-Print Network [OSTI]

    Sebastian Schubert; Valerio Lucarini

    2015-08-17

    One of the most relevant weather regimes in the mid latitudes atmosphere is the persistent deviation from the approximately zonally symmetric jet stream to the emergence of so-called blocking patterns. Such configurations are usually connected to exceptional local stability properties of the flow which come along with an improved local forecast skills during the phenomenon. It is instead extremely hard to predict onset and decay of blockings. Covariant Lyapunov Vectors (CLVs) offer a suitable characterization of the linear stability of a chaotic flow, since they represent the full tangent linear dynamics by a covariant basis which explores linear perturbations at all time scales. Therefore, we will test whether CLVs feature a signature of the blockings. We examine the CLVs for a quasi-geostrophic beta-plane two-layer model in a periodic channel baroclinically driven by a meridional temperature gradient $\\Delta T$. An orographic forcing enhances the emergence of localized blocked regimes. We detect the blocking events of the channel flow with a Tibaldi-Molteni scheme adapted to the periodic channel. When blocking occurs, the global growth rates of the fastest growing CLVs are significantly higher. Hence against intuition, globally the circulation is more unstable in blocked phases. Such an increase in the finite time Lyapunov exponents with respect to the long term average is attributed to stronger barotropic and baroclinic conversion in the case of high temperature gradients, while for low values of $\\Delta T$, the effect is only due to stronger barotropic instability. For the localization of the CLVs, we compare the meridionally averaged variance of the CLVs during blocked and unblocked phases. We find that on average the variance of the CLVs is clustered around the center of blocking. These results show that the blocked flow affects all time scales and processes described by the CLVs.

  9. Assembly of Sub-10-nm Block Copolymer Patterns with Mixed Morphology and Period Using Electron Irradiation and Solvent Annealing

    E-Print Network [OSTI]

    Son, Jeong Gon

    Block copolymer self-assembly generates patterns with periodicity in the ?10–100 nm range and is increasingly recognized as a route to lithographic patterning beyond the resolution of photolithography. Block copolymers ...

  10. Application of the Gebhart-Block Model for Predicting Vertical Temperature Distribution in a Large Space Building with Natural Ventilation 

    E-Print Network [OSTI]

    Huang, C.; Song, Y.; Luo, X.

    2006-01-01

    Based on the Block model for predicting vertical temperature distribution in a large space, this paper describes an improved Gebhart-Block model for predicting vertical temperature distribution of a large space with natural ventilation...

  11. Figure 1. We use Styrofoam blocks to construct a geometrically simplified replica of the scene. The Styrofoam

    E-Print Network [OSTI]

    Pollefeys, Marc

    Figure 1. We use Styrofoam blocks to construct a geometrically simplified replica of the scene. The Styrofoam blocks are used as display surfaces on which view-dependent imagery of the scene is projected

  12. High-Pressure Micellar Solutions of Polystyrene-block-Polybutadiene and Polystyrene-block-Polyisoprene Solutions in Propane Exhibit Cloud-Pressure Reduction and Distinct Micellization End Points

    SciTech Connect (OSTI)

    Winoto, Winoto; Radosz, Maciej; Tan, Sugata; Hong, Kunlun; Mays, Jimmy

    2009-01-01

    Micellar solutions of polystyrene-block-polybutadiene and polystyrene-block-polyisoprene in propane are found to exhibit significantly lower cloud pressures than the corresponding hypothetical non-micellar solutions. Such a cloud-pressure reduction indicates the extent to which micelle formation enhances the apparent diblock solubility in near-critical and hence compressible propane. Pressure-temperature points beyond which no micelles can be formed, referred to as the micellization end points, are found to depend on the block type, size and ratio, and on the polymer concentration. For a given pressure, the micellization end-point temperature corresponds to the "critical micelle temperature." The cloud-pressure reduction and the micellization end point measured for styrene-diene diblocks in propane should be characteristic of all amphiphilic diblock copolymer solutions that form micelles in compressible solvents.

  13. Sub-5 nm Domains in Ordered Poly(cyclohexylethylene)-block-poly(methyl methacrylate) Block Polymers for Lithography.

    SciTech Connect (OSTI)

    Kennemur, Justin; Yao, Li; Bates, Frank Stephen; Hillmyer, Marc

    2014-01-01

    A series of poly(cyclohexylethylene)-block-poly- (methyl methacrylate) (PCHE PMMA) diblock copolymers with varying molar mass (4.9 kg/mol Mn 30.6 kg/mol) and narrow molar mass distribution were synthesized through a combination of anionic and atom transfer radical polymerization (ATRP) techniques. Heterogeneous catalytic hydrogenation of -(hydroxy)polystyrene (PS-OH) yielded -(hydroxy)poly(cyclohexylethylene) (PCHEOH) with little loss of hydroxyl functionality. PCHE-OH was reacted with -bromoisobutyryl bromide (BiBB) to produce an ATRP macroinitiator used for the polymerization of methyl methacrylate. PCHE PMMA is a glassy, thermally stable material with a large effective segment segment interaction parameter, eff = (144.4 6.2)/T (0.162 0.013), determined by meanfield analysis of order-to-disorder transition temperatures (TODT) measured by dynamic mechanical analysis and differential scanning calorimetry. Ordered lamellar domain pitches (9 D 33 nm) were identified by small-angle X-ray scattering from neat BCPs containing 43 52 vol % PCHE ( f PCHE). Atomic force microscopy was used to show 7.5 nm lamellar features (D = 14.8 nm) which are some of the smallest observed to date. The lowest molar mass sample (Mn = 4.9 kg/mol, f PCHE = 0.46) is characterized by TODT = 173 3 C and sub-5 nm nanodomains, which together with the sacrificial properties of PMMA and the high overall thermal stability place this material at the forefront of high- systems for advanced nanopatterning applications.

  14. Non-immunogenic, hydrophilic/cationic block copolymers and uses thereof

    DOE Patents [OSTI]

    Scales, Charles W.; Huang, Faqing; McCormick, Charles L.

    2010-05-18

    The present invention provides novel non-immunogenic, hydrophilic/cationic block copolymers comprising a neutral-hydrophilic polymer and a cationic polymer, wherein both polymers have well-defined chain-end functionality. A representative example of such a block copolymer comprises poly(N-(2-hydroxypropyl)methacrylamide) (PHPMA) and poly(N-[3-(dimethylamino)propyl]methacrylamide) (PDMAPMA). Also provided is a synthesis method thereof in aqueous media via reversible addition fragmentation chain transfer (RAFT) polymerization. Further provided are uses of these block copolymers as drug delivery vehicles and protection agents.

  15. Nanopatterning of Recombinant Proteins Using Block Copolymer Arthur V. Cresce, Joshua S. Silverstein, William E. Bentley, and Peter Kofinas*,

    E-Print Network [OSTI]

    Rubloff, Gary W.

    Nanopatterning of Recombinant Proteins Using Block Copolymer Templates Arthur V. Cresce, Joshua S nanometer-sized structures. The interactions of recombinant proteins with block copolymer surfaces (NOR/NORCOOH) was synthesized and its hydrophilic block loaded with metal ions. Protein binding ability

  16. Building Blocks for Release Management Unification in Large-Scale Environments

    E-Print Network [OSTI]

    , challenges of unifying them, and basic building blocks for a comprehensive, ITIL-based Release Management that is responsible for introducing changes into the live environment in a controlled manner (see e.g ITIL [5

  17. Templated self-assembly of Si-containing block copolymers for nanoscale device fabrication

    E-Print Network [OSTI]

    Ross, Caroline A.

    Block copolymers have been proposed for self-assembled nanolithography because they can spontaneously form well-ordered nanoscale periodic patterns of lines or dots in a rapid, low-cost process. By templating the selfassembly, ...

  18. Templating Three-Dimensional Self-Assembled Structures in Bilayer Block Copolymer Films

    E-Print Network [OSTI]

    Gotrik, Kevin W.

    The registration and alignment of a monolayer of microdomains in a self-assembled block copolymer thin film can be controlled by chemical or physical templating methods. Although planar patterns are useful for nanoscale ...

  19. Aligned Sub-10-nm Block Copolymer Patterns Templated by Post Arrays

    E-Print Network [OSTI]

    Chang, Jae-Byum

    Self-assembly of block copolymer films can generate useful periodic nanopatterns, but the self-assembly needs to be templated to impose long-range order and to control pattern registration with other substrate features. ...

  20. Design rules for self-assembled block copolymer patterns using tiled templates

    E-Print Network [OSTI]

    Chang, Jae-Byum

    Directed self-assembly of block copolymers has been used for fabricating various nanoscale patterns, ranging from periodic lines to simple bends. However, assemblies of dense bends, junctions and line segments in a single ...

  1. Sacrificial-Post Templating Method for Block Copolymer Self-Assembly

    E-Print Network [OSTI]

    Alexander-Katz, Alfredo

    A sacrificial-post templating method is presented for directing block copolymer self-assembly to form nanostructures consisting of monolayers and bilayers of microdomains. In this approach, the topographical post template ...

  2. Flexible casting of modular self-aligning microfluidic assembly blocks Sean M. Langelier,a

    E-Print Network [OSTI]

    Walter, Nils G.

    Flexible casting of modular self-aligning microfluidic assembly blocks Sean M. Langelier,a Eric and extraction of MABs using flexible casting trays, (2) use of pre-coated substrates for simultaneous assembly

  3. Properties of concrete paving blocks made with waste marble Osman Gencela,f,*, Cengiz Ozelb

    E-Print Network [OSTI]

    North Texas, University of

    Laboratory of Advanced Polymers & Optimized Materials (LAPOM), Department of Materials Science: Concrete paving blocks Recycled aggregate Marble waste Concrete wear a b s t r a c t Marble industry

  4. Video compression of coronary angiograms based on discrete wavelet transform with block classification

    SciTech Connect (OSTI)

    Ho, B.K.T.; Tsai, M.J.; Wei, J.; Ma, M.; Saipetch, P.

    1996-12-01

    A new method of video compression for angiographic images has been developed to achieve high compression ratio ({approximately}20:1) while eliminating block artifacts which leads to loss of diagnostic accuracy. This method adopts motion picture experts group`s (MPEG`s) motion compensated prediction to take advantage of frame to frame correlation. However, in contrast to MPEG, the error images arising from mismatches in the motion estimation are encoded by discrete wavelet transform (DWT) rather than block discrete cosine transform (DCT). Furthermore, the authors developed a classification scheme which label each block in an image as intra, error, or background type and encode it accordingly. This hybrid coding can significantly improve the compression efficiency in certain cases. This method can be generalized for any dynamic image sequences applications sensitive to block artifacts.

  5. Constructing Nature's Building Blocks: An Analysis of Computational Protein Design Today

    E-Print Network [OSTI]

    1 Constructing Nature's Building Blocks: An Analysis of Computational Protein Design Today by Guha . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Analysis of search algorithms to serve as enzymes. Computational protein design attempts to, given a three dimensional protein structure

  6. Fabrication and characterization of nanostructures from self-assembled block copolymers

    E-Print Network [OSTI]

    Cheng, Joy, 1974-

    2003-01-01

    Nanoscale magnetic dot arrays have attracted considerable interest, both for fundamental studies of micromagnetism and for possible applications in high-density magnetic data storage. Self-assembled block copolymers provide ...

  7. The Resolution of Important Pharmaceutical Building Blocks by Palladium-Catalyzed Aerobic Oxidation of Secondary Alcohols

    E-Print Network [OSTI]

    Stoltz, Brian M.

    The Resolution of Important Pharmaceutical Building Blocks by Palladium-Catalyzed Aerobic Oxidation. Abstract: The palladium-catalyzed aerobic oxidative kinetic resolution of key pharmaceutical building resolution; oxidation; oxygen; palladium; pharmaceutical sub- stance As part of a general program initiated

  8. Malaria transmission-blocking vaccines—how can their development be supported? 

    E-Print Network [OSTI]

    Carter, Richard; Mendis, Kamini N; Miller, Louis H; Molineaux, Louis; Saul, Allan

    Malaria is a disease of poor countries. The development of malaria vaccines requires considerable investment, for which there is little commercial interest, particularly for transmission-blocking vaccines that have ...

  9. Attenuation of dilute aromatic hydrocarbon transport by a block copolymer in a compacted vertisol 

    E-Print Network [OSTI]

    Akin, James Browning

    2001-01-01

    supplies. The study was performed to determine if the modification of a compacted soil liner with a thermoplastic elastomer block copolymer could successfully sequester benzene, toluene, ethylbenzene, and xylenes and meet the United States Environmental...

  10. ECMWF analyses and forecasts of 500 mb synoptic-scale activity during wintertime blocking 

    E-Print Network [OSTI]

    Matson, David Michael

    1993-01-01

    An observational study of 500 mb atmospheric blocking is conducted based on an European Centre for Medium-Range Weather Forecasts (ECMWF) wintertime analysis and forecast dataset during dynamic extended range forecasting ...

  11. Amphiphilic block copolymer micelles : creation of functional nanocavities and their use as nanocontainers for controlled release

    E-Print Network [OSTI]

    Miller, Andrew Craig

    2008-01-01

    Block copolymers in solution can self-assemble in to a variety of morphologies, with features on the nanometer length scale. This has lead to significant recent research into this assembly process and a wide range of ...

  12. Block entropy and quantum phase transition in the anisotropic Kondo necklace model

    SciTech Connect (OSTI)

    Mendoza-Arenas, J. J.; Franco, R.; Silva-Valencia, J.

    2010-06-15

    We study the von Neumann block entropy in the Kondo necklace model for different anisotropies {eta} in the XY interaction between conduction spins using the density matrix renormalization group method. It was found that the block entropy presents a maximum for each {eta} considered, and, comparing it with the results of the quantum criticality of the model based on the behavior of the energy gap, we observe that the maximum block entropy occurs at the quantum critical point between an antiferromagnetic and a Kondo singlet state, so this measure of entanglement is useful for giving information about where a quantum phase transition occurs in this model. We observe that the block entropy also presents a maximum at the quantum critical points that are obtained when an anisotropy {Delta} is included in the Kondo exchange between localized and conduction spins; when {Delta} diminishes for a fixed value of {eta}, the critical point increases, favoring the antiferromagnetic phase.

  13. Method of producing nanopatterned articles using surface-reconstructed block copolymer films

    DOE Patents [OSTI]

    Russell, Thomas P; Park, Soojin; Wang, Jia-Yu; Kim, Bokyung

    2013-08-27

    Nanopatterned surfaces are prepared by a method that includes forming a block copolymer film on a substrate, annealing and surface reconstructing the block copolymer film to create an array of cylindrical voids, depositing a metal on the surface-reconstructed block copolymer film, and heating the metal-coated block copolymer film to redistribute at least some of the metal into the cylindrical voids. When very thin metal layers and low heating temperatures are used, metal nanodots can be formed. When thicker metal layers and higher heating temperatures are used, the resulting metal structure includes nanoring-shaped voids. The nanopatterned surfaces can be transferred to the underlying substrates via etching, or used to prepare nanodot- or nanoring-decorated substrate surfaces.

  14. MOLECULAR DISRUPTIONS OF THE PANGLIAL SYNCYTIUM BLOCK POTASSIUM SIPHONING AND AXONAL SALTATORY CONDUCTION

    E-Print Network [OSTI]

    Rash, John E.

    REVIEW MOLECULAR DISRUPTIONS OF THE PANGLIAL SYNCYTIUM BLOCK POTASSIUM SIPHONING AND AXONAL- sium siphoning," a process originally proposed to explain astro- cytic sequestration and long that established the concept of potassium siphoning in unmyeli- nated CNS axons, summarize recent revolutions

  15. Research on Heat Resisting Character of Hollow Building Blocks in Energy Saving Wall 

    E-Print Network [OSTI]

    Zhang, Y.; He, J.; Gao, S.

    2006-01-01

    By establishing a mathematical model with the finite difference method, the three-dimensional temperature fields of a new type of asymmetrical hollow building blocks in an energy saving wall are solved in this paper. The three forms of heat...

  16. Thermal modulation during solvent annealing of PS-PDMS block copolymer

    E-Print Network [OSTI]

    Pan, Annia (An N.)

    2015-01-01

    The self-assembly of block copolymers (BCP) has been a promising area of research for nanolithography applications in microelectronics because of their ability to produce nano-scale level periodic structures with long-range ...

  17. The design, synthesis and properties of pressure-processable biodegradable block copolymers

    E-Print Network [OSTI]

    Lovell, Nathan Gary

    2005-01-01

    In this thesis, biodegradable block copolyesters were specifically designed and synthesized for their susceptibility to pressure-induced mixing. These baroplastic materials are capable of being processed and molded through ...

  18. Linking Northern Hemisphere blocking and storm track biases in the CMIP5

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    and Wallace,20 1993] and connections between blocking, the jet stream positions [Woollings et al., 2010 (NAO), which is characterised by a south-shifted jet-stream27 regime over the Atlantic, is generally

  19. Dynamical Analysis of Blocking Events: Spatial and Temporal Fluctuations of Covariant Lyapunov Vectors

    E-Print Network [OSTI]

    Schubert, Sebastian

    2015-01-01

    One of the most relevant weather regimes in the mid latitudes atmosphere is the persistent deviation from the approximately zonally symmetric jet stream to the emergence of so-called blocking patterns. Such configurations are usually connected to exceptional local stability properties of the flow which come along with an improved local forecast skills during the phenomenon. It is instead extremely hard to predict onset and decay of blockings. Covariant Lyapunov Vectors (CLVs) offer a suitable characterization of the linear stability of a chaotic flow, since they represent the full tangent linear dynamics by a covariant basis which explores linear perturbations at all time scales. Therefore, we will test whether CLVs feature a signature of the blockings. We examine the CLVs for a quasi-geostrophic beta-plane two-layer model in a periodic channel baroclinically driven by a meridional temperature gradient $\\Delta T$. An orographic forcing enhances the emergence of localized blocked regimes. We detect the blockin...

  20. Heat treatment optimization in the manufacture of Wilson Rockwell steel hardness test blocks

    E-Print Network [OSTI]

    Tan, Vincent Tandean

    2009-01-01

    The heat-treatment process in the manufacture of Wilson Rockwell steel hardness test blocks often produces parts which are inconsistent in the mean hardness and hardness uniformity. In this thesis, the sources of variation ...

  1. Resonant Soft X-Ray Scattering of Tri-Block Copolymers

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

    Tri-BCPs and multi-block BCPs are being considered for use in applications ranging from fuel-cell membranes to hybrid biomolecular materials to structured electrolytes for...

  2. Fabrication and characterization of novel nanostructures based on block copolymer lithography

    E-Print Network [OSTI]

    Chuang, Vivian Peng-Wei

    2009-01-01

    Microphase-separation of block copolymers into periodic nanoscale structures has drawn considerable attention as a method for pattern generation in nanolithography. One of the main challenges is to create complex nanostructures ...

  3. Modeling and theoretical design methods for directed self-assembly of thin film block copolymer systems

    E-Print Network [OSTI]

    Hannon, Adam Floyd

    2014-01-01

    Block copolymers (BCPs) have become a highly studied material for lithographic applications due to their ability to self-assemble into complex periodic patterns with feature resolutions ranging from a few to 100s nm. BCPs ...

  4. S and S : Block Ciphers for the Internet of Things Ray Beaulieu Douglas Shors Jason Smith

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    S and S : Block Ciphers for the Internet of Things Ray Beaulieu Douglas Shors Jason Smith Stefan's needed in the Internet of Things (IoT) era is not more Kirtland's warblers and koalas, as wonderful

  5. Covalent Stabilization of Nanostructures: Robust Block Copolymer Templates from Novel Thermoreactive Systems

    E-Print Network [OSTI]

    Harth, Eva M.

    platforms for the fabrication of nanostruc- tured devices for advanced storage and microelec- tronicCovalent Stabilization of Nanostructures: Robust Block Copolymer Templates from Novel, crosslinked nanostructure with greater processing and fabrication potential. © 2005 Wiley Periodicals, Inc. J

  6. The potential for commercial use of wildlife in some North-Eastern Tuli Block farms 

    E-Print Network [OSTI]

    Nchunga, Mushanana Lawrence

    1978-01-01

    THE POTENTIAL FOR COMMERCIAL USE OF WILDLIFE IN SOME NORTH ? EASTERN TULI BLOCK FARMS A Thesis by Mushanana Lawrence Nchunga Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1978 Major Subject: Wildlife and Fisheries Sciences THE POTENTIAL FOR COMMERCIAL USE OF WILDLIFE IN SOME NORTH-EASTERN TULI BLOCK FARMS A Thesis Mushanana Lawrence Nchunga A proved as to style and content by: ) (Chairman...

  7. US-Guided Femoral and Sciatic Nerve Blocks for Analgesia During Endovenous Laser Ablation

    SciTech Connect (OSTI)

    Yilmaz, Saim Ceken, Kagan; Alimoglu, Emel; Sindel, Timur

    2013-02-15

    Endovenous laser ablation may be associated with significant pain when performed under standard local tumescent anesthesia. The purpose of this study was to investigate the efficacy of femoral and sciatic nerve blocks for analgesia during endovenous ablation in patients with lower extremity venous insufficiency. During a 28-month period, ultrasound-guided femoral or sciatic nerve blocks were performed to provide analgesia during endovenous laser ablation in 506 legs and 307 patients. The femoral block (n = 402) was performed at the level of the inguinal ligament, and the sciatic block at the posterior midthigh (n = 124), by injecting a diluted lidocaine solution under ultrasound guidance. After the blocks, endovenous laser ablations and other treatments (phlebectomy or foam sclerotherapy) were performed in the standard fashion. After the procedures, a visual analogue pain scale (1-10) was used for pain assessment. After the blocks, pain scores were 0 or 1 (no pain) in 240 legs, 2 or 3 (uncomfortable) in 225 legs, and 4 or 5 (annoying) in 41 legs. Patients never experienced any pain higher than score 5. The statistical analysis revealed no significant difference between the pain scores of the right leg versus the left leg (p = 0.321) and between the pain scores after the femoral versus sciatic block (p = 0.7). Ultrasound-guided femoral and sciatic nerve blocks may provide considerable reduction of pain during endovenous laser and other treatments, such as ambulatory phlebectomy and foam sclerotherapy. They may make these procedures more comfortable for the patient and easier for the operator.

  8. Association and Structure of Thermo Sensitive Comblike Block Copolymers in Aqueous Solutions

    SciTech Connect (OSTI)

    Cheng, Gang [ORNL; Hua, Fengjun [ORNL; Melnichenko, Yuri B [ORNL; Hong, Kunlun [ORNL; Wignall, George D [ORNL; Mays, Jimmy [ORNL; Hammouda, B. [National Institute of Standards and Technology (NIST)

    2008-01-01

    The structures and association properties of thermo sensitive poly(methoxyoligo(ethylene glycol) norbornenyl esters) block copolymers in D2O were investigated by Small Angle Neutron Scattering (SANS). Each block is a comb-like polymer with a polynorbornene (PNB) backbone and oligo ethylene glycol (OEG) side chains (one side chain per NB monomer). The chemical formula of the block copolymer is (OEG3NB)79-(OEG6.6NB)67, where subscripts represent the degree of polymerization (DP) of OEG and NB in each block The polymer concentration was fixed at 2.0 wt % and the structural changes were investigated over a temperature range between 25 C and 68 C. It was found that at room temperature polymers associate to form micelles with a spherical core formed by the block (OEG3NB)79 and corona formed by the block (OEG6.6NB)67 and that the shape of the polymer in the corona could be described by the form factor of rigid cylinders. At elevated temperatures, the aggregation number increases and the micelles become more compact. At temperatures round the cloud point temperature (CPT) T = 60 C a correlation peak started to appear and became pronounced at 68 C due to the formation of a partially ordered structure with a correlation length ~ 349 .

  9. Preventive maintenance system for the photomultiplier detector blocks of pet scanners

    DOE Patents [OSTI]

    Levy, Alejandro V. (Center Moriches, NY); Warner, Donald (Shirley, NY)

    1995-01-24

    A system including a method and apparatus for preventive maintenance of PET scanner photomultiplier detector blocks is disclosed. The quantitive comparisons used in the method of the present invention to provide an indication in the form of a display or printout advising the user that the photomultiplier block is stable, intermittently unstable, or drifting unstable, and also advising of the expected date of failure of a photomultiplier block in the PET scanner. The system alerts the user to replace the defective photomultiplier block prior to catastrophic failure in a scheduled preventative maintenance program, thus eliminating expensive and unscheduled downtime of the PET scanner due to photomultiplier failure. The apparatus for carrying out the method of the present invention preferably resides in the host computer controlling a PET scanner. It includes a memory adapted for storing a record of a number of iterative adjustments that are necessary to calibrate the gain of a photomultiplier detector block i at a time t.sub.0, a time t.sub.1 and a time T, where T>t.sub.1 >t.sub.0, which is designated as Histo(i,j(t)). The apparatus also includes a processor configured by a software program or a combination of programmed RAM and ROM devices to perform a number of calculations and operations on these values, and also includes a counter for analyzing each photomultiplier detector block i=1 through I of a PET scanner.

  10. Preventive maintenance system for the photomultiplier detector blocks of PET scanners

    DOE Patents [OSTI]

    Levy, A.V.; Warner, D.

    1995-01-24

    A system including a method and apparatus for preventive maintenance of PET scanner photomultiplier detector blocks is disclosed. The qualitative comparisons used in the method of the present invention to provide an indication in the form of a display or printout advising the user that the photomultiplier block is stable, intermittently unstable, or drifting unstable, and also advising of the expected date of failure of a photomultiplier block in the PET scanner. The system alerts the user to replace the defective photomultiplier block prior to catastrophic failure in a scheduled preventative maintenance program, thus eliminating expensive and unscheduled downtime of the PET scanner due to photomultiplier failure. The apparatus for carrying out the method of the present invention preferably resides in the host computer controlling a PET scanner. It includes a memory adapted for storing a record of a number of iterative adjustments that are necessary to calibrate the gain of a photomultiplier detector block i at a time t[sub 0], a time t[sub 1] and a time T, where T>t[sub 1]>t[sub 0], which is designated as Histo(i,j(t)). The apparatus also includes a processor configured by a software program or a combination of programmed RAM and ROM devices to perform a number of calculations and operations on these values, and also includes a counter for analyzing each photomultiplier detector block i=1 through I of a PET scanner. 40 figures.

  11. Detecting and Blocking Network Attacks at Ultra High Speeds

    SciTech Connect (OSTI)

    Paxson, Vern

    2010-11-29

    Stateful, in-depth, in-line traffic analysis for intrusion detection and prevention has grown increasingly more difficult as the data rates of modern networks rise. One point in the design space for high-performance network analysis - pursued by a number of commercial products - is the use of sophisticated custom hardware. For very high-speed processing, such systems often cast the entire analysis process in ASICs. This project pursued a different architectural approach, which we term Shunting. Shunting marries a conceptually quite simple hardware device with an Intrusion Prevention System (IPS) running on commodity PC hardware. The overall design goal is was to keep the hardware both cheap and readily scalable to future higher speeds, yet also retain the unparalleled flexibility that running the main IPS analysis in a full general-computing environment provides. The Shunting architecture we developed uses a simple in-line hardware element that maintains several large state tables indexed by packet header fields, including IP/TCP flags, source and destination IP addresses, and connection tuples. The tables yield decision values the element makes on a packet-by-packet basis: forward the packet, drop it, or divert ('shunt') it through the IPS (the default). By manipulating table entries, the IPS can, on a fine-grained basis: (i) specify the traffic it wishes to examine, (ii) directly block malicious traffic, and (iii) 'cut through' traffic streams once it has had an opportunity to 'vet' them, or (iv) skip over large items within a stream before proceeding to further analyze it. For the Shunting architecture to yield benefits, it needs to operate in an environment for which the monitored network traffic has the property that - after proper vetting - much of it can be safely skipped. This property does not universally hold. For example, if a bank needs to examine all Web traffic involving its servers for regulatory compliance, then a monitor in front of one of the bank's server farms cannot safely omit a subset of the traffic from analysis. In this environment, Shunting cannot realize its main performance benefits, and the monitoring task likely calls for using custom hardware instead. However, in many other environments we find Shunting holds promise for delivering major performance gains. This arises due to the the widely documented 'heavy tail' nature of most forms of network traffic, which we might express as 'a few of the connections carry just about all the bytes.' The key additional insight is '... and very often for these few large connections, the very beginning of the connection contains nearly all the information of interest from a security analysis perspective.' We argue that this second claim holds because it is at the beginning of connections that authentication exchanges occur, data or file names and types are specified, request and reply status codes conveyed, and encryption is negotiated. Once these occur, we have seen most of the interesting facets of the dialog. Certainly the remainder of the connection might also yield some grist for analysis, but this is generally less likely, and thus if we want to lower analysis load at as small a loss as possible of information relevant to security analysis, we might best do so by skipping the bulk of large connections. In a different context, the 'Time Machine' work by Kornexl and colleagues likewise shows that in some environments we can realize major reductions in the volume of network traffic processed, by limiting the processing to the first 10-20 KB of each connection. As a concrete example, consider an IPS that monitors SSH traffic. When a new SSH connection arrives and the Shunt fails to find an entry for it in any of its tables (per-address, per-port, per-connection), it executes the default action of diverting the connection through the IPS. The IPS analyzes the beginning of the connection in this fashion. As long as it is satisified with the dialog, it reinjects the packets forwarded to it so that the connection can continue. If the connection successfully

  12. Self-Assembly of Rod-Coil Block Copolymers And Their Application in Electroluminescent Devices

    SciTech Connect (OSTI)

    Tao, Y.; Ma, B.; Segalman, R.A.

    2009-05-26

    The formation of alternating electron transporting and hole transporting 15 nm lamellae within the active layer of an organic light-emitting diode (OLED) is demonstrated to improve device performance. A new multifunctional bipolar rod-coil block copolymer containing a poly(alkoxy phenylenevinylene) (PPV) rod-shaped block as the hole transporting and emitting material and a poly(vinyloxadiazole) coil-shaped electron transporting block is synthesized. This new block copolymer is the active material of a self-assembling multicomponent electroluminescent device that can be deposited in a single step. In the thin film, grazing incidence X-ray scattering and transmission electron microscopy demonstrate that the layers form grains which are oriented bimodally: parallel and perpendicular from the anode. In this mixed orientation, the device demonstrates better performance than those with either pure PPV or a blend of the two analogous homopolymers as the active materials, i.e., higher external quantum efficiency (EQE) and brightness. This improved device performance is mainly attributed to the bipolar functionality and microphase separation of the block copolymer, which provide highly efficient hole and electron recombination at the nanodomain interfaces.

  13. The Technical Image: A History of Styles in Scientific Imagery Editors Horst Bredekamp, Vera Dnkel and Birgit Schneider

    E-Print Network [OSTI]

    Napp, Nils

    computer-savvy lab piglets to havoc-wreaking feral hogs. The Naked Surgeon Samer Nashef sCribe (2015) UK

  14. Ion Implanted Ge:B Far Infrard Blocked Impurity BandDetectors

    SciTech Connect (OSTI)

    Beeman, J.W.; Goyal, S.; Reichertz, L.A.; Haller, E.E.

    2006-06-12

    Ge Blocked Impurity Band (BIB) photoconductors have the potential to replace stressed Ge:Ga photoconductors for far-infrared astronomical observations. A novel planar BIB device has been fabricated in which ion-implanted boron is used to form the blocking and absorbing layers of necessary purity and compensation. The effect of doping in the infrared active layer on the far-infrared photoconductive response has been studied, and the optimum doping concentration is found to be {approx} 4 x 10{sup 16} cm{sup -3}. Devices doped near this concentration show good blocking characteristics with low dark currents. The spectral response extends to {approx} 45 cm{sup -1}, clearly showing the formation of an impurity band. Under low background testing conditions these devices attain a responsivity of 0.12 A/W and NEP of 5.23 x 10{sup -15} W/Hz{sup -1/2}.

  15. Millisecond ordering of block-copolymer films via photo-thermal gradients

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

    Majewski, Pawel W.; Yager, Kevin G.

    2015-03-12

    For the promise of self-assembly to be realized, processing techniques must be developed that simultaneously enable control of the nanoscale morphology, rapid assembly, and, ideally, the ability to pattern the nanostructure. Here, we demonstrate how photo-thermal gradients can be used to control the ordering of block-copolymer thin films. Highly localized laser heating leads to intense thermal gradients, which induce a thermophoretic force on morphological defects. This increases the ordering kinetics by at least 3 orders-of-magnitude, compared to conventional oven annealing. By simultaneously exploiting the thermal gradients to induce shear fields, we demonstrate uniaxial alignment of a block-copolymer film in lessmore »than a second. Finally, we provide examples of how control of the incident light-field can be used to generate prescribed configurations of block-copolymer nanoscale patterns.« less

  16. Ordered porous mesostructured materials from nanoparticle-block copolymer self-assembly

    DOE Patents [OSTI]

    Warren, Scott; Wiesner, Ulrich; DiSalvo, Jr., Francis J

    2013-10-29

    The invention provides mesostructured materials and methods of preparing mesostructured materials including metal-rich mesostructured nanoparticle-block copolymer hybrids, porous metal-nonmetal nanocomposite mesostructures, and ordered metal mesostructures with uniform pores. The nanoparticles can be metal, metal alloy, metal mixture, intermetallic, metal-carbon, metal-ceramic, semiconductor-carbon, semiconductor-ceramic, insulator-carbon or insulator-ceramic nanoparticles, or combinations thereof. A block copolymer/ligand-stabilized nanoparticle solution is cast, resulting in the formation of a metal-rich (or semiconductor-rich or insulator-rich) mesostructured nanoparticle-block copolymer hybrid. The hybrid is heated to an elevated temperature, resulting in the formation of an ordered porous nanocomposite mesostructure. A nonmetal component (e.g., carbon or ceramic) is then removed to produce an ordered mesostructure with ordered and large uniform pores.

  17. Performance Analysis of Block Codes over Finite-state Channels in Delay-sensitive Communications 

    E-Print Network [OSTI]

    Hamidi Sepehr, Fatemeh

    2014-01-22

    of the queue exceeding a threshold as functions of block length N and code rate R. The system parameters considered above are subject to maxi,j P˜ue,SN |S0(j|i) ? 10 ?5. . . . . . . . . . . . . . . . . . . . . . . 92 III.4 Exact probability of the queue... exceeding a threshold as functions of block length N and code rate R. These system parameters meet the constraint maxi,j P¯ue,SN |S0(j|i) ? 10 ?5. . . . . . . . . . . 92 x CHAPTER I INTRODUCTION I.1 Background Framework With the ever increasing popularity...

  18. Electrically conductive doped block copolymer of polyacetylene and polyisoprene. [Soluble in organic solvents

    DOE Patents [OSTI]

    Aldissi, M.

    1984-06-27

    An electrically conductive block copolymer of polyisoprene and polyacetylene and a method of making the same are disclosed. The polymer is prepared by first polymerizing isoprene with n-butyllithium in a toluene solution to form an active isoprenyllithium polymer. The active polymer is reacted with an equimolar amount of titanium butoxide and subsequently exposed to gaseous acetylene. A block copolymer of polyisoprene and polyacetylene is formed. The copolymer is soluble in common solvents and may be doped with I/sub 2/ to give it an electrical conductivity in the metallic regime.

  19. On a Block Matrix Inequality quantifying the Monogamy of the Negativity of Entanglement

    E-Print Network [OSTI]

    Koenraad M. R. Audenaert

    2014-08-30

    We convert a conjectured inequality from quantum information theory, due to He and Vidal, into a block matrix inequality and prove a special case. Given $n$ matrices $A_i$, $i=1,\\ldots,n$, of the same size, let $Z_1$ and $Z_2$ be the block matrices $Z_1:=(A_jA_i^*)_{i,j=1}^n$ and $Z_2:=(A_j^*A_i)_{i,j=1}^n$. Then the conjectured inequality is \\[ \\left(||Z_1||_1-\\trace Z_1\\right)^2 + \\left(||Z_2||_1-\\trace Z_2\\right)^2 \\le \\left(\\sum_{i\

  20. Method and apparatus for storing hydrogen isotopes. [stored as uranium hydride in a block of copper

    DOE Patents [OSTI]

    McMullen, J.W.; Wheeler, M.G.; Cullingford, H.S.; Sherman, R.H.

    1982-08-10

    An improved method and apparatus for storing isotopes of hydrogen (especially tritium) are provided. The hydrogen gas is stored as hydrides of material (for example uranium) within boreholes in a block of copper. The mass of the block is critically important to the operation, as is the selection of copper, because no cooling pipes are used. Because no cooling pipes are used, there can be no failure due to cooling pipes. And because copper is used instead of stainless steel, a significantly higher temperature can be reached before the eutectic formation of uranium with copper occurs, (the eutectic of uranium with the iron in stainless steel forms at a significantly lower temperature).

  1. Capitol Area East End, Block 225: California Department of Education Headquarters

    High Performance Buildings Database

    Sacramento, CA The California Department of Education Headquarters, Block 225 was the first of the five buildings to make up the Capitol Area East End Complex. The entire project is being developed by the California Department of General Services Real Estate Division. At 336,000 square feet and six stories high, Block 225 was the most ambitious green-building initiative to have been undertaken by the State at that time and the largest office building project ever undertaken by the State. The project was delivered through a bridged design-build process.

  2. Millimeter-wave circuits and pulse compression radar baseband/analog signal processing blocks in silicon processes

    E-Print Network [OSTI]

    Parlak, Mehmet; Parlak, Mehmet

    2012-01-01

    Second Generation Baseband/Analog Signal Processing . 7.1.1Chapter 4 Analog Signal Processing Blocks for Pulsebetween baseband/analog signal processing architec- tures. (

  3. OrthoCluster: A New Tool for Mining Synteny Blocks and Applications in Comparative Genomics

    E-Print Network [OSTI]

    Pei, Jian

    OrthoCluster: A New Tool for Mining Synteny Blocks and Applications in Comparative Genomics Xinghuo, jpei, wangk}@cs.sfu.ca {iav, mnesbitt, chenn}@sfu.ca ABSTRACT By comparing genomes among both closely and distally re- lated species, comparative genomics analysis characterizes structures and functions

  4. Correlating instrumentation data to system states: A building block for automated diagnosis and control

    E-Print Network [OSTI]

    Chase, Jeffrey S.

    Correlating instrumentation data to system states: A building block for automated diagnosis the use of statistical induction tech- niques as a basis for automated performance diagnosis interpretability properties that make them excellent candidates for automated diag- nosis and control. We explore

  5. Upper Bounds on ErrorCorrecting RunlengthLimited Block Codes

    E-Print Network [OSTI]

    Ytrehus, Ã?yvind

    . Inf. Th. May 1991, pp. 941--945 Abstract --- Upper bounds are derived on the number of codewords­limited codes, error­correction. This work was supported by the Norwegian Research Council for Science on the size of (d; k)­ constrained, simple­error correcting block codes. There are two directions in which one

  6. Non-Blocking, Localized Routing Algorithm for Balanced Energy Consumption in Mobile Ad Hoc Networks

    E-Print Network [OSTI]

    Yu, Chansu

    relevant nodes but also to balance individual battery levels. Unbalanced energy usage will result1 Non-Blocking, Localized Routing Algorithm for Balanced Energy Consumption in Mobile Ad Hoc Networks Kyungtae Woo, Chansu Yu, and Dongman Lee Hee Yong Youn Ben Lee School of Engineering Information

  7. Synthesis and Application of Useful Organic Building Blocks and Cyclic Tetrapeptide 

    E-Print Network [OSTI]

    Zhou, Hua

    2014-12-12

    Analysis Of CTPs Cyclic tetrapeptides (CTPs) have been known for decades, mostly as natural products.8-10 Previous syntheses of CTPs involve proline and/or glycine. Proline facilitates syntheses of CTPs because cis-conformations are far more... INTRODUCTION ........................................................................................... 1 1.1 New Methodology For Synthetically Useful Building Blocks ............ 1 1.2 Synthesis And Conformational Analysis Of CTPs...

  8. Towards a Universal Building Block of Molecular and Silicon Computation Steven Swanson and Mark Oskin

    E-Print Network [OSTI]

    Oskin, Mark

    of compu- tational resources, yet data transfer will continue to hinder scaling. Chemically self-assembledTowards a Universal Building Block of Molecular and Silicon Computation Steven Swanson and Mark, the challenges that face traditional silicon computing are eerily similar to those molecular and other nanoscale

  9. A Systematic Approach to Nanotechnology Based on a Small Set of Molecular Building Blocks

    E-Print Network [OSTI]

    MacLennan, Bruce

    1 A Systematic Approach to Nanotechnology Based on a Small Set of Molecular Building Blocks Bruce J, and behavior can be programmed, quite literally, at the molecular level. The ap­ proach is based on combinatory the molecules self­assemble a desired nanostruc­ ture by ``computing'' the structure and then becoming inactive

  10. A Systematic Approach to Nanotechnology Based on a Small Set of Molecular Building Blocks

    E-Print Network [OSTI]

    MacLennan, Bruce

    1 A Systematic Approach to Nanotechnology Based on a Small Set of Molecular Building Blocks Bruce J, and behavior can be programmed, quite literally, at the molecular level. The ap- proach is based on combinatory the molecules self-assemble a desired nanostruc- ture by "computing" the structure and then becoming inactive

  11. Deblocking of Block-Transform Compressed Images Using Weighted Sums of Symmetrically Aligned Pixels

    E-Print Network [OSTI]

    Averbuch, Amir

    -transform codecs (BTC) are among the most common compression tools available for still images and video sequences sequences. At low bitrates, BTC compressed images, exhibit a visually annoying phenomenon, known bitrates), using BTC (e.g. JPEG), with visually acceptable results, we have to eliminate the blocking

  12. Block Spreading for MUI/ISI-Resilient Generalized Multi-carrier CDMA with Multirate Capabilities

    E-Print Network [OSTI]

    Giannakis, Georgios

    1 of 5 Block Spreading for MUI/ISI-Resilient Generalized Multi-carrier CDMA with Multirate) and intersymbol interference (ISI) arising due to wireless multipath propagation, motivate well multirate wideband Quality of Service (QoS) and rate- scalability, have low complexity, and exhibit resilience to MUI and ISI

  13. Patterns, Structures, and Amino Acid Frequencies in Structural Building Blocks, a Protein Secondary

    E-Print Network [OSTI]

    Berg, George

    Patterns, Structures, and Amino Acid Frequencies in Structural Building Blocks, a Protein Secondary Structure Classification Scheme Jacquelyn S. Fetrow,1* Michael J. Palumbo,1 and George Berg2 Departments ABSTRACT To study local structures in proteins, we previously developed an autoasso- ciative artificial

  14. IDENTIFICATION NUMBER: 4ME20 Abstract--Artificial welding of melt-textured YBCO blocks

    E-Print Network [OSTI]

    Amoros, Jaume

    1 IDENTIFICATION NUMBER: 4ME20 Abstract--Artificial welding of melt-textured YBCO blocks opens the superconducting quality of the welds, we have developed a Hall probe mapping system, able to record the local to characterize welded samples prepared with a new Ag induced surface melting joining technique. The magnetization

  15. Discovering Block-Structured Process Models From Event Logs -A Constructive Approach

    E-Print Network [OSTI]

    van der Aalst, Wil

    Discovering Block-Structured Process Models From Event Logs - A Constructive Approach S University of Technology, P.O. Box 513, NL-5600 MB, Eindhoven, The Netherlands Abstract Process discovery is the problem of, given a log of observed behaviour, finding a process model that `best' describes

  16. AER Building Blocks for Multi-Layer Multi-Chip Neuromorphic Vision Systems

    E-Print Network [OSTI]

    Häfliger, Philipp

    AER Building Blocks for Multi-Layer Multi-Chip Neuromorphic Vision Systems R. Serrano-Gotarredona1 the address-event- representation (AER) is demonstrated. The system includes a retina chip, two convolution and measurements results are shown. 1 Introduction The Address-Event-Representation (AER) is an event

  17. Smart Environments: Middleware Building Blocks for Pervasive Network Computing (A Position Paper)

    E-Print Network [OSTI]

    Weissman, Jon

    Smart Environments: Middleware Building Blocks for Pervasive Network Computing (A Position Paper effortless manner. In this position paper, we introduce the notion of a ``smart service'' -- services to form ``smart environments.'' Smart environments present an integrated view of services to the user

  18. On the risks of serving whenever you surf Vulnerabilities in Tor's blocking resistance design

    E-Print Network [OSTI]

    Hopper, Nicholas J.

    , the Tor network consists of roughly 2000 "Onion Routers" that voluntarily relay traffic between who can observe a Tor client's network connections and even control some Onion Routers shouldOn the risks of serving whenever you surf Vulnerabilities in Tor's blocking resistance design Jon

  19. An Efficient Greedy-Based Autonomous Resource Block Assignment Scheme for 5G Cellular

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    in assisting the communication between base stations and wireless termi- nals (WTs), which include, not only resource blocks (RBs) to a potentially large number of WTs with minimal conflicts. This requires optimizing in the number of wireless terminals (WTs) that can be sup- ported by the network [1]. These WTs may include

  20. Information Outage Probability of Orthogonal Space-Time Block Codes over Hoyt Distributed

    E-Print Network [OSTI]

    Rontogiannis, Athanasios A.

    Information Outage Probability of Orthogonal Space-Time Block Codes over Hoyt Distributed Fading,tronto,mathio} @space.noa.gr Abstract- In this paper the information outage probabil- ity (IOP) of orthogonal space telecommunications applications. For instance, in [4] this model has been used in outage analysis of cellular mobile

  1. Analysis and Computation of the Outage Probability of Discrete-Input Block-Fading Channels

    E-Print Network [OSTI]

    Guillén i Fàbregas, Albert

    Analysis and Computation of the Outage Probability of Discrete-Input Block-Fading Channels Khoa D IS ELIGIBLE FOR THE STUDENT PAPER AWARD. In this paper, we propose a tight lower bound to the outage is not supported by a particular channel realization [1], [2]. This probability is named the information outage

  2. Power Optimization of Memoryless Wireless Media Systems with Space-Time Block Codes

    E-Print Network [OSTI]

    Yousefi'zadeh, Homayoun

    Power Optimization of Memoryless Wireless Media Systems with Space-Time Block Codes Hamid present an analytical so- lution to the problem of power control in wireless media systems with multiple- less media systems subject to a given level of Quality of Service (QoS) and an available bit rate. Our

  3. Efficient Block-Based Parameterized Timing Analysis Covering All Potentially Critical Paths

    E-Print Network [OSTI]

    Najm, Farid N.

    Efficient Block-Based Parameterized Timing Analysis Covering All Potentially Critical Paths Khaled in the parameter space, by reporting all paths that can become critical. Using an efficient pruning algorithm, only) but by knowledge of the paths that can become critical at nearby points in parameter space. We give a formal

  4. I/O-Efficient Algorithms for Contour Line Extraction and Planar Graph Blocking

    E-Print Network [OSTI]

    Agarwal, Pankaj K.; Arge, Lars; Murali, T. M.; Kasturi R., Varadarajan; Vitter, Jeffrey Scott

    1998-01-01

    improved algorithm for a more general problem of blocking bounded-degree planar graphs such as TINS (i.e., storing them on disk so that any graph traversal algorithm can traverse the graph in an I/O-efficient manner), and apply it to two problms that arise...

  5. Neural Cost Functions and Search Strategies for the Generation of Block Designs

    E-Print Network [OSTI]

    Torras, Carme

    Neural Cost Functions and Search Strategies for the Generation of Block Designs: an Experimental Evaluation Pau Bo ll Departament d'Arquitectura de Computadors (UPC), Campus Nord- Modul-D6, c/ Gran Capita s-UPC), Edi ci Nexus, c/ Gran Capita 2-4, 08034 Barcelona, ctorras@iri.upc.es Abstract A constraint

  6. Compact microwave lamp having a tuning block and a dielectric located in a lamp cavity

    DOE Patents [OSTI]

    Simpson, James E. (Gaithersburg, MD)

    2000-01-01

    A microwave lamp having a compact structure utilizing a coupling slot which has a dielectric member extending therethrough and a tuning block adjoining the coupling slot. A non-conventional waveguide is used which has about the width of a WR-284 waveguide and about the length of a WR-340 waveguide.

  7. High Diversity Multi-Block Space-Time Code for Broadcasting Applications

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    seen as a two-block matrix. It enjoys a flexible transmission rate and a diversity order of 8 for a 2x2 to the power of four of the constellation size. The STBC parameters have been optimized to suit fading channels with and without erasure events. These events are typical of single frequency networks that are becoming a popular

  8. Surge Block Method for Controlling Well Clogging and Sampling Sediment during Bioremediation

    SciTech Connect (OSTI)

    Wu, Wei-min [Stanford University] [Stanford University; Watson, David B [ORNL] [ORNL; Luo, Jian [Stanford University] [Stanford University; Carley, Jack M [ORNL] [ORNL; Mehlhorn, Tonia L [ORNL] [ORNL; Kitanidis, Peter K. [Stanford University] [Stanford University; Jardine, Philip [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Criddle, Craig [Stanford University] [Stanford University

    2013-01-01

    A surge block treatment method (i.e. inserting a solid rod plunger with a flat seal that closely fits the casing interior into a well and stocking it up and down) was performed for the rehabilitation of wells clogged with biomass and for the collection of time series sediment samples during in situ bioremediation tests for U(VI) immobilization at a the U.S. Department of Energy site in Oak Ridge, TN. The clogging caused by biomass growth had been controlled by using routine surge block treatment for18 times over a nearly four year test period. The treatment frequency was dependent of the dosage of electron donor injection and microbial community developed in the subsurface. Hydraulic tests showed that the apparent aquifer transmissivity at a clogged well with an inner diameter (ID) of 10.16 cm was increased by 8 13 times after the rehabilitation, indicating the effectiveness of the rehabilitation. Simultaneously with the rehabilitation, the surge block method was successfully used for collecting time series sediment samples composed of fine particles (clay and silt) from wells with ID 1.9 10.16 cm for the analysis of mineralogical and geochemical composition and microbial community during the same period. Our results demonstrated that the surge block method provided a cost-effective approach for both well rehabilitation and frequent solid sampling at the same location.

  9. Automated Modeling of Dynamic Reliability Block Diagrams Using Colored Petri Nets

    E-Print Network [OSTI]

    Xu, Haiping

    solution to automated verification of DRBD models. Index Terms--System reliability, reliability block \\ Abstract--Computer system reliability is conventionally modeled and analyzed using techniques such as fault), defines a framework for modeling dynamic reliability behavior of computer-based systems. However

  10. A Formal Verification Method of Function Block Diagram Kwang Yong Koh1

    E-Print Network [OSTI]

    Jee, Eunkyoung

    control systems in chemical processing plants, nuclear power plants or traffic control systems [1A Formal Verification Method of Function Block Diagram Kwang Yong Koh1 , Poong Hyun Seong1 , Eun Engineering, KAIST 2 Division of Computer Science, Department of Electrical Engineering and Computer Science

  11. Conflicts between Optimality Criteria in Incomplete-Block Designs for Microarray

    E-Print Network [OSTI]

    Bailey, R. A.

    Conflicts between Optimality Criteria in Incomplete-Block Designs for Microarray Experiments R. A that we need to know a specific (non-orthogonal) design for the allocation of the treatments to the dye of the design as an oriented graph Treatments are vertices; slides are edges, oriented from green to red. slides

  12. Staff summary of Issues & Recommendations Resident Fish Substitution/Blocked Area Mitigation

    E-Print Network [OSTI]

    1 Staff summary of Issues & Recommendations Resident Fish Substitution/Blocked Area Mitigation *Preliminary draft, please refer to full recommendations for complete review 10/29/2013 10:08:05 AM 2009 Fish and Wildlife Program Section Section II.C. 1. Substitution for Anadromous Fish Losses Section II. D. 8

  13. OrthoCluster: A New Tool for Mining Synteny Blocks and Applications in Comparative Genomics

    E-Print Network [OSTI]

    Wang, Ke

    OrthoCluster: A New Tool for Mining Synteny Blocks and Applications in Comparative Genomics Xinghuo, jpei, wangk}@cs.sfu.ca {iav, chenn}@sfu.ca, mattjnesbitt@alumni.sfu.ca ABSTRACT By comparing genomes among both closely and distally re- lated species, comparative genomics analysis characterizes

  14. Blog or block: Detecting blog bots through behavioral biometrics , Steven Gianvecchio a

    E-Print Network [OSTI]

    Wang, Haining

    Blog or block: Detecting blog bots through behavioral biometrics Zi Chu a, , Steven Gianvecchio in revised form 18 August 2012 Accepted 10 October 2012 Available online 17 October 2012 Keywords: Blog Bot Behavioral biometrics Automatic classification Security Web a b s t r a c t Blog bots are automated scripts

  15. Test method development for evaluating the freeze-thaw performance of segmental retaining wall blocks 

    E-Print Network [OSTI]

    Hoelscher, Aaron Kindall

    2007-04-25

    for evaluating the freeze-thaw durability of SRW blocks has several drawbacks and does not accurately replicate environmental exposure field conditions. The objective of this research is to develop and assess a new standard test method for evaluating the freeze...

  16. The Building Blocks of Cellulose: The Intrinsic Conformational Structures of Cellobiose, Its Epimer, Lactose,

    E-Print Network [OSTI]

    Davis, Ben G.

    The Building Blocks of Cellulose: The Intrinsic Conformational Structures of Cellobiose, Its Epimer calculation has established the intrinsic three-dimensional structures of the cellulose disaccharide and, focusing on the critical 1,4-linkage at the nonreducing end of the growing cellulose polymer, its C-4

  17. Acceptance test procedure for removal of CS1K circuit switcher block and trip schemes

    SciTech Connect (OSTI)

    HACHE, J.M.

    1999-08-25

    This supporting document provides a detailed process to test the functions of the circuit switcher, protective relays, alarms, SCADA and 125VDC control logic of 115kV and 13.8kV systems at B3S4 substation following the removal of trip and blocking schemes to Transformer No.1 Circuit Switcher B594.

  18. Pauli-blocking imaging of single strain-induced semiconductor quantum dots

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    19 March 1999 The photoluminescence PL of InP strained-induced quantum dots in a GaInAs/GaAs quantumPauli-blocking imaging of single strain-induced semiconductor quantum dots C. Obermu¨ller, A of the electronic properties of self-assembled semiconductor quantum dots.2 High resolu- tion PL microscopy can

  19. Infinite Products Associated with Counting Blocks in Binary Strings J.-P. Allouche J. O. Shallit

    E-Print Network [OSTI]

    Shallit, Jeffrey O.

    ) occurrences of w in the binary expansion of n. We show that there exists an effectively computable rational we address in this paper. For any finite nonempty block w of 0's and 1's, we define aw(n) as the number of occurrences of w in the binary expansion of n. With this quantity we associate an infinite

  20. High performance building blocks for wireless receiver: multi-stage amplifiers and low noise amplifiers 

    E-Print Network [OSTI]

    Fan, Xiaohua

    2009-05-15

    normally serves as the primary part of the system, which heavily influences the system performance. This research concentrates on the designs of several important blocks of the receiver; multi-stage amplifier and low noise amplifier. Two novel multi-stage...

  1. Guidelines for the Use of Function Block Diagram in Reactor Protection Systems

    E-Print Network [OSTI]

    ) in reactor protection system (RPS) developed in the Korea Nuclear Instrumentation and Control System R-Q Software Engineering Tool (pSET) [2] which is developed by Korea Nuclear Instrumentation and ControlGuidelines for the Use of Function Block Diagram in Reactor Protection Systems Dong-Ah Lee, Junbeom

  2. On the Interpolation Attacks on Block Ciphers A.M. Youssef and G. Gong

    E-Print Network [OSTI]

    Youssef, Amr M.

    On the Interpolation Attacks on Block Ciphers A.M. Youssef and G. Gong Center for Applied attack, nite elds, Ga- lois Field Fourier Transform 1 Introduction Gong and Golomb 7 introduced a new the later by decimation d. Gong and Golomb showed that the distance of DES S-boxes approximated

  3. SAME 2001, November 15 th 2001 1 A combinatorial logic block of a synchronous

    E-Print Network [OSTI]

    Huss, Sorin A.

    together with the generation of a request signal derived from a clock of the synchronous systemSAME 2001, November 15 th 2001 1 Abstract A combinatorial logic block of a synchronous pipeline uses pulsed signals, into a synronous environment with static signals. Therefore the generation

  4. Block Copolymer Thin Films as Nanofabrication Templates Wednesday April 15, 2009

    E-Print Network [OSTI]

    Fisher, Frank

    in an inorganic material. For example, we have fabricated dense arrays of 20-40 nm metal or semiconductor Materials Princeton University, Princeton, NJ Microphase separation in block copolymers is at the heart properties. But the facts that these nanodomain structures can be highly regular (i.e. a body

  5. The Power of a Few Large Blocks: A credible assumption with incredible efficiency

    E-Print Network [OSTI]

    Foster, Dean P.

    i.i.d. assumption about the error structure, the two-sample t-statistic for oil was significantThe Power of a Few Large Blocks: A credible assumption with incredible efficiency Dongyu Lin and Dean P. Foster Abstract The most powerful assumption in data analysis is that of independence. Unfortu

  6. Design Methodology for Single Electron Based Building Blocks Cor Meenderinck Casper Lageweg Sorin Cotofana

    E-Print Network [OSTI]

    Cotofana, Sorin

    . During the presentation we use a Move k electron (MV ke) block as a discussion vehicle but the approach of power consumption and scalability. A promising alternative is Single Electron Tunneling (SET) technology electron at a time, if it reduces the amount of energy in the system. Tunneling through a junction becomes

  7. Design Methodology for Single Electron Based Building Blocks Cor Meenderinck Casper Lageweg Sorin Cotofana

    E-Print Network [OSTI]

    Cotofana, Sorin

    . During the presentation we use a Move k electron (MV ke) block as a discussion vehicle but the approach of power consumption and scalability. A promising alternative is Single Electron Tunneling (SET) technology, if it reduces the amount of energy in the system. Tunneling through a junction becomes possible when

  8. A JACOBI METHOD BY BLOCKS TO SOLVE THE SYMMETRIC EIGENVALUE PROBLEM

    E-Print Network [OSTI]

    Giménez, Domingo

    A JACOBI METHOD BY BLOCKS TO SOLVE THE SYMMETRIC EIGENVALUE PROBLEM Domingo Gim'enez \\Lambda­matrix multiplication. To achieve this, we borrow techniques de­ veloped for parallel Jacobi methods to enhance data BLAS exist for that machine. Keywords: Jacobi methods, symmetric eigenvalue problem, algorithms

  9. Spectral theory of a class of Block Jacobi matrices and applications

    E-Print Network [OSTI]

    Jaouad Sahbani

    2015-04-22

    We develop a spectral analysis of a class of block Jacobi operators based on the conjugate operator method of Mourre. We give several applications including scalar Jacobi operators with periodic coefficients, a class of difference operators on cylindrical domains such as discrete wave propagators, and certain fourth-order difference operators.

  10. Local Contrast Segmentation to Binarize Images Marco Block and Ral Rojas

    E-Print Network [OSTI]

    Block, Marco

    Berlin Institut für Informatik Takustr. 9, 14195 Berlin, Germany {block,rojas}@inf.fu-berlin.de Abstract on positive and negative pixel energies using the Laplacian of an image. After a filtering step}. In this presented case the foreground object is text while the rest is declared as background. Usage of atomic units

  11. On the fusion matrix of the N=1 Neveu-Schwarz blocks

    E-Print Network [OSTI]

    Leszek Hadasz

    2007-07-23

    We propose an exact form of the fusion matrix of the Neveu-Schwarz blocks that appear in a correlation function of four super-primary fields. Orthogonality relation satisfied by this matrix is equivalent to the bootstrap equation for the four-point super-primary correlator in the N=1 supersymmetric Liouville theory.

  12. Automatic Security Evaluation of Block Ciphers with S-bP Structures against Related-key

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Automatic Security Evaluation of Block Ciphers with S-bP Structures against Related (MILP), Mouha et al proposed a method to accomplish this task automatically for word-oriented symmetric, to automatically evaluate its security against differential attacks. We obtain lower bounds on the numbers

  13. Monte Carlo Simulation of the Electrodeposition of Copper II. Acid Sulfate Solution with Blocking Additive

    E-Print Network [OSTI]

    Kushner, Mark

    reported that clarify important aspects of behavior. Takahashi and Gross24 studied transport phenomena, Essex Junction, Vermont 05452, USA c Department of Chemical Engineering and Frederick Seitz Materials the property that it blocks deposition but is consumed at the surface, and that its arrival at the electrode

  14. 3D Metal-Organic Frameworks Based on Elongated Tetracarboxylate Building Blocks for Hydrogen Storage

    E-Print Network [OSTI]

    Li, Jing

    3D Metal-Organic Frameworks Based on Elongated Tetracarboxylate Building Blocks for Hydrogen Storage Liqing Ma, Jeong Yong Lee, Jing Li, and Wenbin Lin*, Department of Chemistry, CB#3290, Uni. The porosity and hydrogen uptake of the frameworks were determined by gas adsorption experiments. A wide range

  15. The Stumbling Block in Lung Repair of Emphysema: Elastic Fiber Assembly

    E-Print Network [OSTI]

    Mecham, Robert

    The Stumbling Block in Lung Repair of Emphysema: Elastic Fiber Assembly Adrian Shifren and Robert P properties of the lung are largely determined by the connective tissue networks laid down during development. The macromolecules most important for lung mechanics and structural integrity are collagen, elastin

  16. P AND T WAVE DELINEATION AND WAVEFORM ESTIMATION IN ECG SIGNALS USING A BLOCK GIBBS SAMPLER

    E-Print Network [OSTI]

    Tourneret, Jean-Yves

    P AND T WAVE DELINEATION AND WAVEFORM ESTIMATION IN ECG SIGNALS USING A BLOCK GIBBS SAMPLER Chao The delineation of P and T waves is important for the interpretation of ECG signals. We propose a Bayesian detection-estimation algo- rithm for simultaneous detection, delineation, and estimation of P and T waves

  17. Broadcasting Intermediate Blocks as a Defense Mechanism Against Selfish-Mine in Bitcoin

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    . The core of Bitcoin's operation is a data structure called the blockchain, which records all past, is added to the blockchain. The miner who solves the puzzle can claim a block reward of new bitcoins the integrity of the blockchain. Hence the fairness of this mechanism is essential to the security of the system

  18. A Re-Evaluation of the Morphology of a Bicontinuous Block Copolymer-Ceramic Material

    E-Print Network [OSTI]

    Gruner, Sol M.

    A Re-Evaluation of the Morphology of a Bicontinuous Block Copolymer-Ceramic Material Gilman E. S-directed aluminosilicate mesostructure and the resulting ceramic material obtained from calcination were studied via small and the resulting ceramic obtained from calcination. The thickness of the solvent-cast film was approximately 0

  19. Block Copolymer Solid Battery Electrolyte with High Li-Ion Transference Number

    E-Print Network [OSTI]

    Rubloff, Gary W.

    Block Copolymer Solid Battery Electrolyte with High Li-Ion Transference Number Ayan Ghosh The electrochemical properties of a solid polymer electrolyte consisting of a diblock copolymer and lithium bis of withstanding such high voltage conditions. Unlike traditional liquid electrolytes, solid-state polymer electro

  20. Block Copolymer Electrolytes Synthesized by Atom Transfer Radical Polymerization for Solid-State, Thin-Film

    E-Print Network [OSTI]

    Sadoway, Donald Robert

    Block Copolymer Electrolytes Synthesized by Atom Transfer Radical Polymerization for Solid, 2002. The ideal electrolyte material for a solid-state battery would have the ionic conductivity. To satisfy these rigorous performance requirements researchers have explored the design of solid electrolytes

  1. A study of power electronic building block (PEBB)-based integrated shipboard power systems during reconfiguration 

    E-Print Network [OSTI]

    Adediran, Adeoti Taiwo

    2004-09-30

    conversion is to be utilized to convert alternating current (AC) generation to direct current (DC) distribution. As state-of-the-art power electronics, the Navy plans to use power electronic building blocks (PEBB) technology in its IPS. A U.S. naval shipboard...

  2. Alfven wave collisions, the fundamental building block of plasma turbulence. III. Theory for experimental design

    E-Print Network [OSTI]

    Carter, Troy

    Alfven wave collisions, the fundamental building block of plasma turbulence. III. Theory is a ubiquitous phenomenon in space and astrophysical plasmas, driving a cascade of energy from large to small, influencing the heating of the solar corona and acceleration of the solar wind,1 the dynamics

  3. Alfven wave collisions, the fundamental building block of plasma turbulence. IV. Laboratory experiment

    E-Print Network [OSTI]

    Carter, Troy

    cascade of energy from large to small scales.9 In order to gain insight into this fundamental buildingAlfven wave collisions, the fundamental building block of plasma turbulence. IV. Laboratory heating, acceleration of the solar wind, and heating of the interstellar medium. Turbulence

  4. PRINCE A Low-latency Block Cipher for Pervasive Computing Applications

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    PRINCE ­ A Low-latency Block Cipher for Pervasive Computing Applications Full version Julia pervasive applications with real-time security needs. Our cipher, named PRINCE, allows encryption of data and encryption results in minimum additional costs. PRINCE is designed in such a way that the overhead for decryp

  5. Rapid Modular Synthesis and Processing of Thiol-Ene Functionalized Styrene-Butadiene Block Copolymers

    E-Print Network [OSTI]

    Rubloff, Gary W.

    Rapid Modular Synthesis and Processing of Thiol-Ene Functionalized Styrene-Butadiene Block,2-butadiene) (PS/PB) and PS/PB/PS were modified by photochemical thiol-ene chemistry to pro- cess selected. Commodity polymers such as those containing poly(butadiene) or poly(isoprene) are ideal candidates

  6. Overview of NCHRP Design Guideline for EPS-Block Geofoam in Slope Stabilization and Repair

    E-Print Network [OSTI]

    Manhattan College Bronx, New York 10471 Tel: (718) 826-7177 E-mail: john.horvath@manhattan.edu Dov and repair applications based on the results of National Cooperative Highway Research Program (NCHRP) Project was performed under NCHRP Project 24-11(01) and produced a design guideline for use of EPS blocks in stand

  7. Event-based simulation of interference with alternatingly blocked particle sources

    E-Print Network [OSTI]

    K. Michielsen; S. Mohanty; L. Arnold; H. De Raedt

    2011-12-12

    We analyze the predictions of an event-based corpuscular model for interference in the case of two-beam interference experiments in which the two sources are alternatingly blocked. We show that such experiments may be used to test specific predictions of the corpuscular model.

  8. A mutation in Aspergillus nidulans that blocks the transition from interphase to prophase

    E-Print Network [OSTI]

    Oakley, Berl R.; Morris, R.

    1983-04-01

    after 7.5 min. When this strain was examined electron-microscopically, mitotic spindles were absent at restrictive temperature. From these data we conclude that at restrictive temperature nimA5 blocks the nuclear division cycle at a point immediately...

  9. Multi-Carrier Multiple Access is Sum-Rate Optimal for Block Transmissions over Circulant ISI Channels*

    E-Print Network [OSTI]

    Giannakis, Georgios

    Multi-Carrier Multiple Access is Sum-Rate Optimal for Block Transmissions over Circulant ISI to maximizing the sum-rate of circulant inter-symbol interference (ISI) channels, that are assumed available at the transmitter. Cir- culant ISI channels are ensured either with cyclic pre`xed block transmissions

  10. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Life Cycle Assessment of Chemistry Building North Block

    E-Print Network [OSTI]

    ­ the UBC LCA Project ­ which aims to support the development of the field of life cycle assessment (LCA at rob.sianchuk@gmail.com #12;Running head: Life Cycle Assessment of Chemistry Building North Block CIVL 498 ­ Life Cycle Assess Life Cycle Assessment of Chemistry Building North Block Minge Weng November 18

  11. 134 Solutions Manual x Fluid Mechanics, Fifth Edition 2.103 A solid block, of specific gravity

    E-Print Network [OSTI]

    Bahrami, Majid

    134 Solutions Manual x Fluid Mechanics, Fifth Edition 2.103 A solid block, of specific gravity 0.9, floats such that 75% of its volume is in water and 25% of its volume is in fluid X, which is layered above the water. What is the specific gravity of fluid X? Solution: The block is sketched at right

  12. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 52, NO. 3, JUNE 2005 599 Investigation of the "Block Effect" on Spatial

    E-Print Network [OSTI]

    Thompson, Chris

    IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 52, NO. 3, JUNE 2005 599 Investigation of the "Block Effect" on Spatial Resolution in PET Detectors Nada Tomic, Student Member, IEEE, Christopher J. Thompson, Member, IEEE, and Michael E. Casey, Member, IEEE Abstract--Previous studies suggest that when block

  13. Accelerating the Convergence of Blocked Jacobi Methods 1 D. Gim'enez, M. T. C'amara, P. Montilla

    E-Print Network [OSTI]

    Giménez, Domingo

    Accelerating the Convergence of Blocked Jacobi Methods 1 D. Gim'enez, M. T. C'amara, P. Montilla,cpmcm,cppmmg@dif.um.es Keywords: Symmetric Eigenvalue Problem, Jacobi methods ABSTRACT In this work we study the possible by Jacobi methods: acceleration of convergence, and work by blocks. INTRODUCTION The Symmetric Eigenvalue

  14. Synthesis and Characterization of Stimuli Responsive Block Copolymers, Self-Assembly Behavior and Applications

    SciTech Connect (OSTI)

    Michael Duane Determan

    2005-12-17

    The central theme of this thesis work is to develop new block copolymer materials for biomedical applications. While there are many reports of stimuli-responsive amphiphilic [19-21] and crosslinked hydrogel materials [22], the development of an in situ gel forming, pH responsive pentablock copolymer is a novel contribution to the field, Figure 1.1 is a sketch of an ABCBA pentablock copolymer. The A blocks are cationic tertiary amine methacrylates blocked to a central Pluronic F127 triblock copolymer. In addition to the prerequisite synthetic and macromolecular characterization of these new materials, the self-assembled supramolecular structures formed by the pentablock were experimentally evaluated. This synthesis and characterization process serves to elucidate the important structure property relationships of these novel materials, The pH and temperature responsive behavior of the pentablock copolymer were explored especially with consideration towards injectable drug delivery applications. Future synthesis work will focus on enhancing and tuning the cell specific targeting of DNA/pentablock copolymer polyplexes. The specific goals of this research are: (1) Develop a synthetic route for gel forming pentablock block copolymers with pH and temperature sensitive properties. Synthesis of these novel copolymers is accomplished with ATRP, yielding low polydispersity and control of the block copolymer architecture. Well defined macromolecular characteristics are required to tailor the phase behavior of these materials. (2) Characterize relationship between the size and shape of pentablock copolymer micelles and gel structure and the pH and temperature of the copolymer solutions with SAXS, SANS and CryoTEM. (3) Evaluate the temperature and pH induced phase separation and macroscopic self-assembly phenomenon of the pentablock copolymer. (4) Utilize the knowledge gained from first three goals to design and formulate drug delivery formulations based on the multi-responsive properties of the pentablock copolymer. Demonstrate potential biomedical applications of these materials with in vitro drug release studies from pentablock copolymer hydrogels. The intent of this work is to contribute to the knowledge necessary for further tailoring of these, and other functional block copolymer materials for biomedical applications.

  15. Better Blocks 

    E-Print Network [OSTI]

    Roberts, J.

    2011-01-01

    - of-way for uses other than those listed in Subsection (a) is $1,000 or is calculated in accordance with one of the following formulas, whichever is greater: (1) Fee for use of public right- of-way, including but not limited to sidewalk cafes...

  16. Block copolymer with simultaneous electric and ionic conduction for use in lithium ion batteries

    DOE Patents [OSTI]

    2013-10-08

    Redox reactions that occur at the electrodes of batteries require transport of both ions and electrons to the active centers. Reported is the synthesis of a block copolymer that exhibits simultaneous electronic and ionic conduction. A combination of Grignard metathesis polymerization and click reaction was used successively to synthesize the block copolymer containing regioregular poly(3-hexylthiophene) (P3HT) and poly(ethylene oxide) (PEO) segments. The P3HT-PEO/LiTFSI mixture was then used to make a lithium battery cathode with LiFePO.sub.4 as the only other component. All-solid lithium batteries of the cathode described above, a solid electrolyte and a lithium foil as the anode showed capacities within experimental error of the theoretical capacity of the battery. The ability of P3HT-PEO to serve all of the transport and binding functions required in a lithium battery electrode is thus demonstrated.

  17. Dilute Group III-V nitride intermediate band solar cells with contact blocking layers

    DOE Patents [OSTI]

    Walukiewicz, Wladyslaw (Kensington, CA); Yu, Kin Man (Lafayette, CA)

    2012-07-31

    An intermediate band solar cell (IBSC) is provided including a p-n junction based on dilute III-V nitride materials and a pair of contact blocking layers positioned on opposite surfaces of the p-n junction for electrically isolating the intermediate band of the p-n junction by blocking the charge transport in the intermediate band without affecting the electron and hole collection efficiency of the p-n junction, thereby increasing open circuit voltage (V.sub.OC) of the IBSC and increasing the photocurrent by utilizing the intermediate band to absorb photons with energy below the band gap of the absorber layers of the IBSC. Hence, the overall power conversion efficiency of a IBSC will be much higher than an conventional single junction solar cell. The p-n junction absorber layers of the IBSC may further have compositionally graded nitrogen concentrations to provide an electric field for more efficient charge collection.

  18. Dilute group III-V nitride intermediate band solar cells with contact blocking layers

    DOE Patents [OSTI]

    Walukiewicz, Wladyslaw; Yu, Kin Man

    2015-02-24

    An intermediate band solar cell (IBSC) is provided including a p-n junction based on dilute III-V nitride materials and a pair of contact blocking layers positioned on opposite surfaces of the p-n junction for electrically isolating the intermediate band of the p-n junction by blocking the charge transport in the intermediate band without affecting the electron and hole collection efficiency of the p-n junction, thereby increasing open circuit voltage (V.sub.OC) of the IBSC and increasing the photocurrent by utilizing the intermediate band to absorb photons with energy below the band gap of the absorber layers of the IBSC. Hence, the overall power conversion efficiency of a IBSC will be much higher than an conventional single junction solar cell. The p-n junction absorber layers of the IBSC may further have compositionally graded nitrogen concentrations to provide an electric field for more efficient charge collection.

  19. Block Time Step Storage Scheme for Astrophysical N-body Simulations

    E-Print Network [OSTI]

    Cai, Maxwell Xu; Kouwenhoven, M B N; Assmann, Paulina; Spurzem, Rainer

    2015-01-01

    Astrophysical research in recent decades has made significant progress thanks to the availability of various $N$-body simulation techniques. With the rapid development of high-performance computing technologies, modern simulations have been able to take the computing power of massively parallel clusters with more than $10^5$ GPU cores. While unprecedented accuracy and dynamical scales have been achieved, the enormous amount of data being generated continuously poses great challenges for the subsequent procedures of data analysis and archiving. As an urgent response to these challenges, in this paper we propose an adaptive storage scheme for simulation data, inspired by the block time step integration scheme found in a number of direct $N$-body integrators available nowadays. The proposed scheme, namely the block time step storage scheme, works by minimizing the data redundancy with assignments of data with individual output frequencies as required by the researcher. As demonstrated by benchmarks, the proposed...

  20. On the Convergence Rate of Multi-Block ADMM Shuzhong Zhang

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    the following multi-block convex minimization problem: min f1(x1) + f2(x2) + · · · + fN (xN ) s.t. A1x1 + A2x2 (1.2) converges if all the functions f1, . . . , fN are further assumed to be strongly convex. Department of Systems Engineering and Engineering Management, The Chinese University of Hong Kong, Shatin

  1. Revisiting the blocking force test on ferroelectric ceramics using high energy x-ray diffraction

    SciTech Connect (OSTI)

    Daniel, L.; Hall, D. A.; Withers, P. J.; Koruza, J.; Webber, K. G.; King, A.

    2015-05-07

    The blocking force test is a standard test to characterise the properties of piezoelectric actuators. The aim of this study is to understand the various contributions to the macroscopic behaviour observed during this experiment that involves the intrinsic piezoelectric effect, ferroelectric domain switching, and internal stress development. For this purpose, a high energy diffraction experiment is performed in-situ during a blocking force test on a tetragonal lead zirconate titanate (PZT) ceramic (Pb{sub 0.98}Ba{sub 0.01}(Zr{sub 0.51}Ti{sub 0.49}){sub 0.98}Nb{sub 0.02}O{sub 3}). It is shown that the usual macroscopic linear interpretation of the test can also be performed at the single crystal scale, allowing the identification of local apparent piezoelectric and elastic properties. It is also shown that despite this apparent linearity, the blocking force test involves significant non-linear behaviour mostly due to domain switching under electric field and stress. Although affecting a limited volume fraction of the material, domain switching is responsible for a large part of the macroscopic strain and explains the high level of inter- and intra-granular stresses observed during the course of the experiment. The study shows that if apparent piezoelectric and elastic properties can be identified for PZT single crystals from blocking stress curves, they may be very different from the actual properties of polycrystalline materials due to the multiplicity of the physical mechanisms involved. These apparent properties can be used for macroscopic modelling purposes but should be considered with caution if a local analysis is aimed at.

  2. Thermally-induced transition of lamellae orientation in block-copolymer films on ‘neutral’ nanoparticle-coated substrates

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

    Yager, Kevin G.; Forrey, Christopher; Singh, Gurpreet; Satija, Sushil K.; Page, Kirt A.; Patton, Derek L.; Jones, Ronald L.; Karin, Alamgir; Douglas, Jack F.

    2015-06-01

    Block-copolymer orientation in thin films is controlled by the complex balance between interfacial free energies, including the inter-block segregation strength, the surface tensions of the blocks, and the relative substrate interactions. While block-copolymer lamellae orient horizontally when there is any preferential affinity of one block for the substrate, we recently described how nanoparticle-roughened substrates can be used to modify substrate interactions. We demonstrate how such ‘neutral’ substrates can be combined with control of annealing temperature to generate vertical lamellae orientations throughout a sample, at all thicknesses. We observe an orientational transition from vertical to horizontal lamellae upon heating, as confirmedmore »using a combination of atomic force microscopy (AFM), neutron reflectometry (NR) and rotational small-angle neutron scattering (RSANS). Using molecular dynamics (MD) simulations, we identify substrate-localized distortions to the lamellar morphology as the physical basis of the novel behavior. In particular, under strong segregation conditions, bending of horizontal lamellae induce a large energetic cost. At higher temperatures, the energetic cost of conformal deformations of lamellae over the rough substrate is reduced, returning lamellae to the typical horizontal orientation. Thus, we find that both surface interactions and temperature play a crucial role in dictating block-copolymer lamellae orientation. As a result, our combined experimental and simulation findings suggest that controlling substrate roughness should provide a useful and robust platform for controlling block-copolymer orientation in applications of these materials.« less

  3. Tender Notice for Renovation of Toilets (Gents & Ladies) on Ground and Second Floor in the Academic Block of ISI Bangalore Centre

    E-Print Network [OSTI]

    Bandyopadhyay, Antar

    Block of ISI Bangalore Centre Sealed tender applications are hereby invited from the contractors (Gents & Ladies) on ground floor and second floor in the Academic block building of ISI, Bangalore Centre

  4. Trop, J.M., Ridgway, K.D., and Spell, T.L., 2003, Sedimentary record of transpressional tectonics and ridge subduction in the Tertiary Matanuska ValleyTalkeetna Mountains forearc basin, southern Alaska, in Sisson, V.B., Roeske, S.M., and Pavlis, T.L., eds

    E-Print Network [OSTI]

    Society of America Special Paper 371, p. 89­118. ©2003 Geological Society of America Geological Society of America Special Paper 371 2003 Sedimentary record of transpressional tectonics and ridge subduction into basin-axis deposits characterized by thick sections of carbonaceous mudstone and coal, and minor chan

  5. Core-shell structures in single flexible-semiflexible block copolymers: Finding the free energy minimum for the folding transition

    E-Print Network [OSTI]

    Natsuhiko Yoshinaga; Kenichi Yoshikawa

    2007-06-11

    We investigate the folding transition of a single diblock copolymer consisting of a semiflexible and a flexible block. We obtain a {\\it Saturn-shaped} core-shell conformation in the folded state, in which the flexible block forms a core and the semiflexible block wraps around it. We demonstrate two distinctive features of the core-shell structures: (i) The kinetics of the folding transition in the copolymer are significantly more efficient than those of a semiflexible homopolymer. (ii) The core-shell structure does not depend on the transition pathway.

  6. Block, Ned, Sexism, Racism, Ageism, and the Nature of Consciousness , Philosophical Topics, 26:1/2 (1999:Spring/Fall) p.71

    E-Print Network [OSTI]

    Block, Ned

    Block, Ned, Sexism, Racism, Ageism, and the Nature of Consciousness , Philosophical Topics, 26:1/2 (1999:Spring/Fall) p.71 #12;Block, Ned, Sexism, Racism, Ageism, and the Nature of Consciousness , Philosophical Topics, 26:1/2 (1999:Spring/Fall) p.71 #12;Block, Ned, Sexism, Racism, Ageism, and the Nature

  7. Block copolymer micellar thin films as templates for the production of tunable inorganic nanocluster arrays and their applications

    E-Print Network [OSTI]

    Bennett, Ryan Derek

    2007-01-01

    In the past decade, the use of self-assembling systems for the fabrication of materials on the nanometer scale has been an active area of research. Block copolymer thin films are a subclass of' self-assembling systems that ...

  8. Wrapping cytochrome c around single-wall carbon nanotube: engineered nanohybrid building blocks for infrared detection at high quantum efficiency

    E-Print Network [OSTI]

    Gong, Youpin; Liu, Qingfeng; Wilt, Jamie Samantha; Gong, Maogang; Ren, Shenqiang; Wu, Judy

    2015-01-01

    Biomolecule cytochrome c (Cty c), a small molecule of a chain of amino acids with extraordinary electron transport, was helically wrapped around a semiconductive single-wall carbon nanotube (s-SWCNT) to form a molecular building block for uncooled...

  9. Dynamically reassigning a connected node to a block of compute nodes for re-launching a failed job

    DOE Patents [OSTI]

    Budnik, Thomas A. (Rochester, MN); Knudson, Brant L. (Rochester, MN); Megerian, Mark G. (Rochester, MN); Miller, Samuel J. (Rochester, MN); Stockdell, William M. (Byron, MN)

    2012-03-20

    Methods, systems, and products for dynamically reassigning a connected node to a block of compute nodes for re-launching a failed job that include: identifying that a job failed to execute on the block of compute nodes because connectivity failed between a compute node assigned as at least one of the connected nodes for the block of compute nodes and its supporting I/O node; and re-launching the job, including selecting an alternative connected node that is actively coupled for data communications with an active I/O node; and assigning the alternative connected node as the connected node for the block of compute nodes running the re-launched job.

  10. Plot size and location within a cotton block: their effects on the canopy temperature function and crop water stress index 

    E-Print Network [OSTI]

    Gaitan, Camilo Alberto

    1988-01-01

    in the cotton block, using the theoretical lower baseline. Table 23. CWSI and linear regression of the CTF for two 0. 6 PET water treatment plots randomly located in the cotton block, using the theoretical lower baseline. . . . . 82 Table 24. Summary... to evaluate the effects of a randomized plot design on the crop water stress index (CWSI) and canopy temperature function (CTF) of cotton. Trickle irrigated cotton at the Agricultural Research Station near Pecos Texas was used to investigate...

  11. Blocking effect of crystal–glass interface in lanthanum doped barium strontium titanate glass–ceramics

    SciTech Connect (OSTI)

    Wang, Xiangrong; Zhang, Yong; Baturin, Ivan; Liang, Tongxiang

    2013-10-15

    Graphical abstract: The blocking effect of the crystal–glass interface on the carrier transport behavior in the lanthanum doped barium strontium titanate glass–ceramics: preparation and characterization. - Highlights: • La{sub 2}O{sub 3} addition promotes the crystallization of the major crystalline phase. • The Z? and M? peaks exist a significant mismatch for 0.5 mol% La{sub 2}O{sub 3} addition. • The Z? and M? peaks separate obviously for 1.0 mol% La{sub 2}O{sub 3} addition. • Crystallite impedance decreases while crystal–glass interface impedance increases. • La{sub 2}O{sub 3} addition increases blocking factor of the crystal–glass interface. - Abstract: The microstructures and dielectric properties in La{sub 2}O{sub 3}-doped barium strontium titanate glass–ceramics have been investigated by scanning electron microscopy (SEM) and impedance spectroscopy. SEM analysis indicated that La{sub 2}O{sub 3} additive decreases the average crystallite size. Impedance spectroscopy revealed that the positions of Z? and M? peaks are close for undoped samples. When La{sub 2}O{sub 3} concentration is 0.5 mol%, the Z? and M? peaks show a significant mismatch. Furthermore, these peaks separate obviously for 1.0 mol% La{sub 2}O{sub 3} addition. With increasing La{sub 2}O{sub 3} concentration, the contribution of the crystallite impedance becomes smaller, while the contribution of the crystal–glass interface impedance becomes larger. More interestingly, it was found that La{sub 2}O{sub 3} additive increases blocking factor of the crystal–glass interface in the temperature range of 250–450 °C. This may be attributed to a decrease of activation energy of the crystallite and an increase of the crystal–glass interface area.

  12. Interpenetrating metal-organic frameworks formed by self-assembly of tetrahedral and octahedral building blocks

    SciTech Connect (OSTI)

    Lu Yongming; Lan Yaqian; Xu Yanhong; Su Zhongmin; Li Shunli; Zang Hongying; Xu Guangjuan

    2009-11-15

    To investigate the relationship between topological types and molecular building blocks (MBBs), we have designed and synthesized a series of three-dimensional (3D) interpenetrating metal-organic frameworks based on different polygons or polyhedra under hydrothermal conditions, namely [Cd(bpib){sub 0.5}(L{sup 1})] (1), [Cd(bpib){sub 0.5}(L{sup 2})].H{sub 2}O (2), [Cd(bpib){sub 0.5}(L{sup 3})] (3) and [Cd(bib){sub 0.5}(L{sup 1})] (4), where bpib=1,4-bis(2-(pyridin-2-yl)-1H-imidazol-1-yl)butane, bib=1,4-bis(1H-imidazol-1-yl)butane, H{sub 2}L{sup 1}=4-(4-carboxybenzyloxy)benzoic acid, H{sub 2}L{sup 2}=4,4'-(ethane-1,2-diylbis(oxy))dibenzoic acid and H{sub 2}L{sup 3}=4,4'-(1,4-phenylenebis(methylene))bis(oxy)dibenzoic acid, respectively. Their structures have been determined by single crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, and thermogravimetric (TG) analyses. Compounds 1-3 display alpha-Po topological nets with different degrees of interpenetration based on the similar octahedral [Cd{sub 2}(-COO){sub 4}] building blocks. Compound 4 is a six-fold interpenetrating diamondoid net based on tetrahedral MBBs. By careful inspection of these structures, we find that various carboxylic ligands and N-donor ligands with different coordination modes and conformations, and metal centers with different geometries are important for the formation of the different MBBs. It is believed that different topological types lie on different MBBs with various polygons or polyhedra. Such as four- and six-connected topologies are formed by tetrahedral and octahedral building blocks. In addition, with the increase of carboxylic ligands' length, the degrees of interpenetration have been changed in the alpha-Po topological nets. And the luminescent properties of these compounds have been investigated in detail. - Graphical abstract: A series of three-dimensional interpenetrating metal-organic frameworks based on different polygons or polyhedra has been synthesized. The crystal structures and topological analysis of these compounds, along with a systematic investigation of the relationship between topological types and molecular building blocks, will be discussed.

  13. Attributes of GRB Pulses: Bayesian Blocks Analysis of TTE Data; a Microburst in GRB 920229

    E-Print Network [OSTI]

    Jeffrey D. Scargle; Jay Norris; Jerry Bonnell

    1997-12-01

    Bayesian Blocks is a new time series algorithm for detecting localized structures (spikes or shots), revealing pulse shapes, and generally characterizing intensity variations. It maps raw counting data into a maximum likelihood piecewise constant representation of the underlying signal. This bin-free method imposes no lower limit on measurable time scales. Applied to BATSE TTE data, it reveals the shortest know burst structure -- a spike superimposed on the main burst in GRB 920229 = Trigger 1453, with rise and decay timescales ~ few 100 microseconds.

  14. Attributes of GRB Pulses Bayesian Blocks Analysis of TTE Data; a Microburst in GRB 920229

    E-Print Network [OSTI]

    Scargle, J D; Bonnell, J T; Scargle, Jeffrey D.; Norris, Jay; Bonnell, Jerry

    1997-01-01

    Bayesian Blocks is a new time series algorithm for detecting localized structures (spikes or shots), revealing pulse shapes, and generally characterizing intensity variations. It maps raw counting data into a maximum likelihood piecewise constant representation of the underlying signal. This bin-free method imposes no lower limit on measurable time scales. Applied to BATSE TTE data, it reveals the shortest know burst structure -- a spike superimposed on the main burst in GRB 920229 = Trigger 1453, with rise and decay timescales ~ few 100 microseconds.

  15. Using Self-Assembled Block Copolymer Macrostructures for Creating a Model System for Cell Mimicry 

    E-Print Network [OSTI]

    Gaspard, Jeffery Simon

    2011-02-22

    component of a biomimic. Studies (6, 17, 18, 23) show how chain length and chemistry of the block copolymers used for the bilayer will affect the bending modulus, the rigidity, the elasticity, the stability, and the ease of assembling in solution (6, 17... or surfactant. 1.2.2.1.1 Organized Media As shown by Kaler (33) and others (6, 34-42) , creating organized gels or structures from copolymers is easily done. Most of the techniques discussed in the papers describe using the surfactant...

  16. Primary arm spacing in chill block melt spun Ni-Mo alloys

    SciTech Connect (OSTI)

    Tewari, S.N.; Glasgow, T.K.

    1986-01-01

    Chill block melt spun ribbons of Ni-Mo binary alloys containing 8.0 to 41.8 wt % Mo have been prepared under carefully controlled processing conditions. The growth velocity has been determined as a function of distance from the quench surface from the observed ribbon thickness dependence on the melt puddle residence time. Primary arm spacings measured at the midribbon thickness locations show a dependence on growth velocity and alloy composition which is expected from dendritic growth models for binary alloys directionally solidified in a positive temperature gradient.

  17. Process Controlled Multiscale Morphologies in Metal-containing Block Copolymer Thin Films

    SciTech Connect (OSTI)

    Ramanathan, Nathan Muruganathan [ORNL] [ORNL; Kilbey, II, S Michael [ORNL; Darling, Seth B. [Argonne National Laboratory (ANL)] [Argonne National Laboratory (ANL)

    2014-01-01

    Poly(styrene-block-ferrocenyldimethylsilane) (PS-b-PFS) is a metal-containing block copolymer that exhibits certain advantages as a mask for lithographic applications. These advantages include compatibility with a wide range of substrates, ease of control over domain morphologies and robust stability to etch plasma, which aid in the development of high-aspect-ratio patterns. An asymmetric cylinder-forming PS-b-PFS copolymer is subjected to different processing to manipulate the morphology of the phase-separated domains. Control of film structure and domain morphology is achieved by adjusting the film thickness, mode of annealing, and/or annealing time. Changing the process from thermal or solvent annealing to hybrid annealing (thermal and then solvent annealing in sequence) leads to the formation of mesoscale spherulitic and dendritic morphologies. In this communication, we show that reversing the order of the hybrid annealing (solvent annealing first and then thermal annealing) of relatively thick films (>100 nm) on homogeneously thick substrates develops disordered lamellar structure. Furthermore, the same processing applied on a substrate with a thin, mechanically flexible window in the center leads to the formation of sub-micron scale concentric ring patterns. Enhanced material mobility in the thick film during hybrid annealing along with dynamic rippling effects that may arise from the vibration of the thin window during spin casting are likely causes for these morphologies.

  18. ASME PTC47.4 -- IGCC performance testing issues for the power block

    SciTech Connect (OSTI)

    Anand, A.K.; Parmar, J.

    1999-07-01

    Integrated Gasification Combined Cycle (IGCC) plants that utilize solid and unconventional liquid fuels have now reached commercialization stage as evidenced by their worldwide construction and new orders. The complex nature or integration between the power generating and the fuel gas generating gasification units of an IGCC has created a need to provide guidance and procedures on how to conduct the performance test for the users and owners of these power plants. ASME Performance Test Code 47 (PTC47) and the associated subsets (PTC47.1, PTC47.2, PTC47.3 and PTC47.4) are being written to define the significant performance factors and provide recommendations how these factors should be applied on test measurements to evaluate the deviation from the IGCC equipment guarantees. This paper reports the progress and issues pertaining to the PTC 47.4 for the IGCC Power Block and how it differs from ASME PTC 46 test code. The paper also discusses the creation of a thermodynamic Power Block model of Wabash River Repowering IGCC plant using a proprietary software. Correction curves derived from the model, which define the performance at design and off design from site conditions are also presented.

  19. GaAs Blocked-Impurity-Band Detectors for Far-Infrared Astronomy

    SciTech Connect (OSTI)

    Cardozo, Benjamin Lewin

    2004-12-21

    High-purity and doped GaAs films have been grown by Liquid-phase epitaxy (LPE) for development of a blocked impurity band (BIB) detector for far-infrared radiation. The film growth process developed has resulted in the capability to grow GaAs with a net active impurity concentration below 1 x 10{sup 13} cm{sup -3}, ideal for the blocking layer of the BIB detector. The growth of n-type LPE GaAs films with donor concentrations below the metal-insulator transition, as required for the absorbing layer of a BIB detector, has been achieved. The control of the donor concentration, however, was found to be insufficient for detector production. The growth by LPE of a high-purity film onto a commercially grown vapor-phase epitaxial (VPE) n-type GaAs doped absorbing layer resulted in a BIB device that showed a significant reduction in the low-temperature dark current compared to the absorbing layer only. Extended optical response was not detected, most likely due to the high compensation of the commercially grown GaAs absorbing layer, which restricts the depletion width of the device.

  20. Efficient Heterogeneous Execution on Large Multicore and Accelerator Platforms: Case Study Using a Block Tridiagonal Solver

    SciTech Connect (OSTI)

    Park, Alfred J [ORNL] [ORNL; Perumalla, Kalyan S [ORNL] [ORNL

    2013-01-01

    The algorithmic and implementation principles are explored in gainfully exploiting GPU accelerators in conjunction with multicore processors on high-end systems with large numbers of compute nodes, and evaluated in an implementation of a scalable block tridiagonal solver. The accelerator of each compute node is exploited in combination with multicore processors of that node in performing block-level linear algebra operations in the overall, distributed solver algorithm. Optimizations incorporated include: (1) an efficient memory mapping and synchronization interface to minimize data movement, (2) multi-process sharing of the accelerator within a node to obtain balanced load with multicore processors, and (3) an automatic memory management system to efficiently utilize accelerator memory when sub-matrices spill over the limits of device memory. Results are reported from our novel implementation that uses MAGMA and CUBLAS accelerator software systems simultaneously with ACML for multithreaded execution on processors. Overall, using 940 nVidia Tesla X2090 accelerators and 15,040 cores, the best heterogeneous execution delivers a 10.9-fold reduction in run time relative to an already efficient parallel multicore-only baseline implementation that is highly optimized with intra-node and inter-node concurrency and computation-communication overlap. Detailed quantitative results are presented to explain all critical runtime components contributing to hybrid performance.

  1. Polymer electrolyte membranes from fluorinated polyisoprene-block-sulfonated polystyrene: Structural evolution with hydration and heating

    SciTech Connect (OSTI)

    Sodeye, Akinbode [Department of Polymer Science and Engineering, University of Massachusetts; Huang, Tianzi [University of Tennessee, Knoxville (UTK); Gido, Samuel [University of Massachusetts, Amherst; Mays, Jimmy [ORNL

    2011-01-01

    Small-angle neutron scattering (SANS) and ultra-small-angle X-ray scattering (USAXS) have been used to study the structural changes in fluorinated polyisoprene/sulfonated polystyrene (FISS) diblock copolymers as they evolved from the dry state to the water swollen state. A dilation of the nanometer-scale hydrophilic domains has been observed as hydration increased, with greater dilation occurring in the more highly sulfonated samples or upon hydration at higher temperatures. Furthermore, a decrease in the order in these phase separated structures is observed upon swelling. The glass transition temperatures of the fluorinated blocks have been observed to decrease upon hydration of these materials, and at the highest hydration levels, differential scanning calorimetry (DSC) has shown the presence of tightly bound water. A precipitous drop in the mechanical integrity of the 50% sulfonated materials is also observed upon exceeding the glass transition temperature (Tg), as measured by dynamic mechanical analysis (DMA).

  2. Algorithmically scalable block preconditioner for fully implicit shallow water equations in CAM-SE

    SciTech Connect (OSTI)

    Lott, P Aaron [Lawrence Livermore National Laboratory (LLNL); Woodward, Carol [Lawrence Livermore National Laboratory (LLNL); Evans, Katherine J [ORNL

    2015-01-01

    Performing accurate and efficient numerical simulation of global atmospheric climate models is challenging due to the disparate length and time scales over which physical processes interact. Implicit solvers enable the physical system to be integrated with a time step commensurate with processes being studied. The dominant cost of an implicit time step is the ancillary linear system solves, so we have developed a preconditioner aimed at improving the efficiency of these linear system solves. Our preconditioner is based on an approximate block factorization of the linearized shallow-water equations and has been implemented within the spectral element dynamical core within the Community Atmospheric Model (CAM-SE). In this paper we discuss the development and scalability of the preconditioner for a suite of test cases with the implicit shallow-water solver within CAM-SE.

  3. Identification of crystalline elastic anisotropy in PZT ceramics from in-situ blocking stress measurements

    SciTech Connect (OSTI)

    Daniel, L., E-mail: laurent.daniel@u-psud.fr [School of Materials, University of Manchester, Manchester M13 9PL (United Kingdom); LGEP (CNRS UMR8507, SUPELEC, UPMC, Univ Paris-Sud), 91192 Gif sur Yvette cedex (France); Hall, D. A.; Withers, P. J. [School of Materials, University of Manchester, Manchester M13 9PL (United Kingdom); Webber, K. G. [Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Straße 2, 64287 Darmstadt (Germany); King, A. [European Synchrotron Radiation Facility (ESRF), 6 rue J. Horowitz, 38043 Grenoble (France); Synchrotron SOLEIL, BP 48, 91192 Gif sur Yvette cedex (France)

    2014-05-07

    High energy x-ray diffraction measurements of lattice strains were performed on a rhombohedral Lead Zirconate Titanate ceramic (PZT 55-45) under combinations of applied electric field and compressive stress. These measurements allow the construction of blocking stress curves for different sets of crystallographic orientations which reflect the single crystal elastic anisotropy. A micro-mechanical interpretation of the results is then proposed. Assuming cubic symmetry for the crystalline elastic stiffness tensor and isotropy for the macroscopic elastic properties, the elastic properties of the single crystal are extracted from the measured data. An anisotropy ratio close to 0.3 is found (compared to 1 for isotropic materials). The high level of anisotropy found in this work suggests that crystalline elastic anisotropy should not be neglected in the modelling of ferroelectric materials.

  4. Wave blocking and partial transmission in subcritical flows over an obstacle

    E-Print Network [OSTI]

    Léo-Paul Euvé; Florent Michel; Renaud Parentani; Germain Rousseaux

    2015-02-06

    We study and measure the transmission coefficient of counter-propagating shallow-water waves produced by a wave generator and scattered by an obstacle. To precisely compare theoretical predictions and experimental data, we consider $\\sim 25$ frequencies for 5 subcritical background flows, where the maximum value of the Froude number ranges from $0.5$ to $0.75$. For each flow, the transmission coefficient displays a sharp transition separating total transmission from wave-blocking. Both the width and the central frequency of the transition are in good agreement with their theoretical values. The shape of the obstacle is identical to that used by the Vancouver team in the recent experiment aiming at detecting the analogue of stimulated Hawking radiation. Our results are compatible with the observations that have been reported. They complete them by establishing that the contribution of the transmission coefficient cannot be neglected for the lower half of the probed frequency range.

  5. Vectorization, threading, and cache-blocking considerations for hydrocodes on emerging architectures

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

    Fung, J.; Aulwes, R. T.; Bement, M. T.; Campbell, J. M.; Ferenbaugh, C. R.; Jean, B. A.; Kelley, T. M.; Kenamond, M. A.; Lally, B. R.; Lovegrove, E. G.; et al

    2015-07-14

    This work reports on considerations for improving computational performance in preparation for current and expected changes to computer architecture. The algorithms studied will include increasingly complex prototypes for radiation hydrodynamics codes, such as gradient routines and diffusion matrix assembly (e.g., in [1-6]). The meshes considered for the algorithms are structured or unstructured meshes. The considerations applied for performance improvements are meant to be general in terms of architecture (not specifically graphical processing unit (GPUs) or multi-core machines, for example) and include techniques for vectorization, threading, tiling, and cache blocking. Out of a survey of optimization techniques on applications such asmore »diffusion and hydrodynamics, we make general recommendations with a view toward making these techniques conceptually accessible to the applications code developer. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.« less

  6. A highly scalable fully non-blocking silicon photonic switch fabric

    E-Print Network [OSTI]

    Nikolova, Dessislava; Liu, Yang; Rumley, Sebastien; Novack, Ari; Baehr-Jones, Tom; Hochberg, Michael; Bergman, Keren

    2016-01-01

    Large port count spatial optical switches will facilitate flexible and energy efficient data movement in future data communications systems, especially if they are capable of nanosecond-order reconfiguration times. In this work, we demonstrate an 8x8 microring-based silicon photonic switch with software controlled switching. The proposed switch architecture is modular as it assembles multiple identical components with multiplexing/demultiplexing functionalities. The switch is fully non-blocking, has path independent insertion loss, low crosstalk and is straightforward to control. A scalability analysis shows that this architecture can scale to very large port counts. This work represents the first demonstration of real-time firmware controlled switching with silicon photonics devices integrated at the chip scale.

  7. Chemically directing d-block heterometallics to nanocrystal surfaces as molecular beacons of surface structure

    SciTech Connect (OSTI)

    Rosen, Evelyn L.; Gilmore, Keith; Sawvel, April M.; Hammack, Aaron T.; Doris, Sean E.; Aloni, Shaul; Altoe, Virginia; Nordlund, Dennis; Weng, Tsu -Chien; Sokaras, Dimosthenis; Cohen, Bruce E.; Urban, Jeffrey J.; Ogletree, D. Frank; Milliron, Delia J.; Prendergast, David; Helms, Brett A.

    2015-07-28

    Our understanding of structure and bonding in nanoscale materials is incomplete without knowledge of their surface structure. Needed are better surveying capabilities responsive not only to different atoms at the surface, but also their respective coordination environments. We report here that d-block organometallics, when placed at nanocrystal surfaces through heterometallic bonds, serve as molecular beacons broadcasting local surface structure in atomic detail. This unique ability stems from their elemental specificity and the sensitivity of their d-orbital level alignment to local coordination environment, which can be assessed spectroscopically. Re-surfacing cadmium and lead chalcogenide nanocrystals with iron- or ruthenium-based molecular beacons is readily accomplished with trimethylsilylated cyclopentadienyl metal carbonyls. For PbSe nanocrystals with iron-based beacons, we show how core-level X-ray spectroscopies and DFT calculations enrich our understanding of both charge and atomic reorganization at the surface when beacons are bound.

  8. Chemically directing d-block heterometallics to nanocrystal surfaces as molecular beacons of surface structure

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

    Rosen, Evelyn L.; Gilmore, Keith; Sawvel, April M.; Hammack, Aaron T.; Doris, Sean E.; Aloni, Shaul; Altoe, Virginia; Nordlund, Dennis; Weng, Tsu -Chien; Sokaras, Dimosthenis; et al

    2015-07-28

    Our understanding of structure and bonding in nanoscale materials is incomplete without knowledge of their surface structure. Needed are better surveying capabilities responsive not only to different atoms at the surface, but also their respective coordination environments. We report here that d-block organometallics, when placed at nanocrystal surfaces through heterometallic bonds, serve as molecular beacons broadcasting local surface structure in atomic detail. This unique ability stems from their elemental specificity and the sensitivity of their d-orbital level alignment to local coordination environment, which can be assessed spectroscopically. Re-surfacing cadmium and lead chalcogenide nanocrystals with iron- or ruthenium-based molecular beacons ismore »readily accomplished with trimethylsilylated cyclopentadienyl metal carbonyls. For PbSe nanocrystals with iron-based beacons, we show how core-level X-ray spectroscopies and DFT calculations enrich our understanding of both charge and atomic reorganization at the surface when beacons are bound.« less

  9. Stability analysis of twist grain boundaries in lamellar phases of block copolymers

    E-Print Network [OSTI]

    Xusheng Zhang; Zhi-Feng Huang; Jorge Viñals

    2008-04-13

    Twist grain boundaries are widely observed in lamellar phases of block copolymers. A mesoscopic model of the copolymer is used to obtain stationary configurations that include a twist grain boundary, and to analyze their stability against long wavelength perturbations. The analysis presented is valid in the weak segregation regime, and includes direct numerical solution of the governing equations as well as a multiple scale analysis. We find that a twist boundary configuration with arbitrary misorientation angle can be well described by two modes, and obtain the equations for their slowly varying amplitudes. The width of the boundary region is seen to scale as $\\epsilon^{-1/4}$, with $\\epsilon$ being the dimensionless distance to the order-disorder transition. We finally present the results of the linear stability analysis of the planar boundary.

  10. Development of HELIOS/CAPP code system for the analysis of block type VHTR cores

    SciTech Connect (OSTI)

    Lee, H. C.; Han, T. Y.; Jo, C. K.; Noh, J. M.

    2012-07-01

    In this paper, the HELIOS/CAPP code system developed for the analysis of block type VHTR cores is presented and verified against several VHTR core configurations. Verification results shows that HELIOS code predicts less negative MTC and RTC than McCARD code does and thus HELIOS code overestimates the multiplication factors at the states with high moderator and reflector temperature especially when the B{sub 4}C BP is loaded. In the depletion calculation for the VHTR single cell fuel element, the error of HELIOS code increases as burnup does. It is ascribed to the fact that HELIOS code treats some fission product nuclides with large resonances as non-resonant nuclides. In the 2-D core depletion calculation, a relatively large reactivity error is observed in the case with BP loading while the reactivity error in the case without BP loading is less than 300 pcm. (authors)

  11. A Comparison of Cranial and Artificially Aroused Impulses Under the Influence of Nerve Blocks

    E-Print Network [OSTI]

    Gruber, Charles M.

    1912-06-01

    I . B lock ing Herve Impulses Set up in Strychninized and Normal Progs * I I % A comparison o f Crania l and A r t i f i c i a l l y Aroused Impulses under the In f luence of l lerve B locks . Two Theses submitted to the department of Phys io... logy o f the U n i v e r s i t y o f Kansas in p a r t i a l f u l f i l l m e n t o f the requ i re ­ ments f o r the Degree o f Master o f A r t s f Char les Grub er A. B* June 1912* Blocking Nerve Impulses Set up in Strychniniaed and Normal...

  12. High-Strain-Induced Deformation Mechanisms in Block-Graft and Multigraft Copolymers

    SciTech Connect (OSTI)

    Schlegel, Ralf [Fraunhofer IWM, Freiburg, German; Duan, Y. X. [Qingdao University of Science and Technology, Qingdao CHINA; Weidisch, Roland [Polymer Research Institute, Dresden Germany; Holzer, Suzette R [ORNL; Schneider, Ken R [ORNL; Stamm, M. [Polymer Research Institute, Dresden Germany; Uhrig, David [ORNL; Mays, Jimmy [ORNL; Heinrich, G. [Polymer Research Institute, Dresden Germany; Hadjichristidis, Nikolaos [ORNL

    2011-01-01

    The molecular orientation behavior and structural changes of morphology at high strains for multigraft and block graft copolymers based on polystyrene (PS) and polyisoprene (PI) were investigated during uniaxial monotonic loading via FT-IR and synchrotron SAXS. Results from FT-IR revealed specific orientations of PS and PI segments depending on molecular architecture and on the morphology, while structural investigations revealed a typical decrease in long-range order with increasing strain. This decrease was interpreted as strain-induced dissolution of the glassy blocks in the soft matrix, which is assumed to affect an additional enthalpic contribution (strain-induced mixing of polymer chains) and stronger retracting forces of the network chains during elongation. Our interpretation is supported by FT-IR measurements showing similar orientation of rubbery and glassy segments up to high strains. It also points to highly deformable PS domains. By synchrotron SAXS, we observed in the neo-Hookean region an approach of glassy domains, while at higher elongations the intensity of the primary reflection peak was significantly decreasing. The latter clearly verifies the assumption that the glassy chains are pulled out from the domains and are partly mixed in the PI matrix. Results obtained by applying models of rubber elasticity to stressstrain and hysteresis data revealed similar correlations between the softening behavior and molecular and morphological parameters. Further, an influence of the network modality was observed (randomgrafted branches). For sphere formingmultigraft copolymers the domain functionality was found to be less important to achieve improved mechanical properties but rather size and distribution of the domains.

  13. Bond rupture mechanism enables to explain in block asymmetry of elaxation, force-velocity curve and the path of energy dissipation in muscle

    E-Print Network [OSTI]

    Eugene V. Rosenfeld

    2015-07-22

    Bond rupture mechanism enables to explain in block asymmetry of elaxation, force-velocity curve and the path of energy dissipation in muscle

  14. Maximize LLC effective capacity to reduce system energy! Compressed Caching: Compressing and compacting cache blocks Limits of previous work

    E-Print Network [OSTI]

    Wood, David A.

    Maximize LLC effective capacity to reduce system energy! Compressed Caching: Compressing and compacting cache blocks Limits of previous work: - Limited number of tags - Internal fragmentation - Energy system energy Limited # Tags Internal fragmentation Potentially 3.9X larger LLC VSC-2X achieves only 1.6X

  15. A Building Block Approach to Sensornet Systems Prabal Dutta, Jay Taneja, Jaein Jeong, Xiaofan Jiang, and David Culler

    E-Print Network [OSTI]

    California at Berkeley, University of

    ,taneja,jaein,fxjiang,culler}@cs.berkeley.edu ABSTRACT We present a building block approach to hardware platform design based on a decade of collective interconnect options for modules and car- riers. We evaluate this approach by constructing a family of general- plication requirements. We show that this approach short- ens platform development time-to-result for novice

  16. Picosecond-petawatt laser-block ignition of avalanche boron fusion by ultrahigh acceleration and ultrahigh magnetic fields

    E-Print Network [OSTI]

    Hora, Heinrich

    2015-01-01

    In contrast to the thermal laser-plasma interaction for fusion by nanosecond pulses, picosecond pulses offer a fundamentally different non-thermal direct conversion of laser energy into ultrahigh acceleration of plasma blocks. This allows to ignite boron fusion which otherwise is most difficult. Trapping by kilotesla magnetic fields and avalanche ignition leads to environmentally clean and economic energy generation.

  17. 2014 APSECA Safe Programming Guidance of Function Block Diagram for Reactor Protection Systems Dong-Ah Lee*, Junbeom Yoo

    E-Print Network [OSTI]

    in safety critical systems ­ Nuclear power plant · RPS (Reactor Protection System) · ESF-CCS (Engineering of Function Block Diagram for Reactor Protection Systems Software development in the nuclear power plant Nuclear Instrumentation & Control System R&D Center (KNICS) · FBD and Ladder Diagram (LD) to design

  18. Amoeba-Cache: Adaptive Blocks for Eliminating Waste in the Memory Hierarchy Snehasish Kumar, Hongzhou Zhao, Arrvindh Shriraman

    E-Print Network [OSTI]

    Shriraman, Arrvindh

    comprise a large fraction (11%) of on-chip cache hierarchy energy consumption. We propose Amoeba hierarchy energy by as much as 36% (mcf) and improves performance by as much as 50% (art). 1 Introduction A cache block is the fundamental unit of space allocation and data transfer in the memory hierarchy

  19. C-Miner: Mining Block Correlations in Storage Systems Zhenmin Li, Zhifeng Chen, Sudarshan M. Srinivasan and Yuanyuan Zhou

    E-Print Network [OSTI]

    Zhou, Yuanyuan

    C-Miner: Mining Block Correlations in Storage Systems Zhenmin Li, Zhifeng Chen, Sudarshan M semantic patterns in storage systems. These correlations can be exploited for improving the effectiveness correlations is not available at the storage system level. Previ- ous approaches for discovering file

  20. Controlled Room Temperature Synthesis of CoFe2O4 Nanoparticles through a Block Copolymer Nanoreactor Route

    E-Print Network [OSTI]

    Rubloff, Gary W.

    matrix at room temperature. Comparable inorganic methods for synthesis of nanoscale mixed- metal oxidesControlled Room Temperature Synthesis of CoFe2O4 Nanoparticles through a Block Copolymer Nanoreactor Route Sufi R. Ahmed and Peter Kofinas*, Department of Materials and Nuclear Engineering

  1. Microfluidics for block polymer shells (DMR 0819860) SEED :H.A. Stone, R.A. Register and Janine Nunes

    E-Print Network [OSTI]

    Petta, Jason

    Microfluidics for block polymer shells (DMR 0819860) SEED :H.A. Stone, R.A. Register and Janine. We utilized microfluidic methods to investigate the role of geometric structures, e.g. thin spherical, microfluidic devices with two consecutive flow-focusing junctions were used to generate air bubble

  2. Influence of eddydriven jet latitude on North Atlantic jet persistence and blocking frequency in CMIP3 integrations

    E-Print Network [OSTI]

    Hartmann, Dennis

    Influence of eddydriven jet latitude on North Atlantic jet persistence and blocking frequency Atlantic jet latitude is analyzed in 45 CMIP3 integrations. It is demonstrated that models that place the jet equatorward of its observed position have more positively skewed jet latitude distributions, while

  3. The Khopik porphyry copper prospect, Lut Block, Eastern Iran: Geology, alteration and mineralization, fluid inclusion, and oxygen isotope studies

    E-Print Network [OSTI]

    Kraus, Mary

    The Khopik porphyry copper prospect, Lut Block, Eastern Iran: Geology, alteration.R. Stern b a Research Center for Ore Deposits of Eastern Iran, Ferdowsi University of Mashhad, Iran b and mineralization Microthermometry Stable isotope The Khopik porphyry copper (Au, Mo) prospect in Eastern Iran

  4. Energy Savings via Dead Sub-Block Prediction Marco A. Z. Alves Khubaib Eiman Ebrahimi Veynu T. Narasiman

    E-Print Network [OSTI]

    Patt, Yale

    Energy Savings via Dead Sub-Block Prediction Marco A. Z. Alves Khubaib Eiman Ebrahimi Veynu T of Rio Grande do Sul - Porto Alegre, RS - Brazil Department of Electrical & Computer Engineering becoming dead (i.e., never accessed again). This results in considerable energy waste since 1) data

  5. Moore et al. 1 Modeling the Impact of Traffic Conditions on the Variability of Mid-block Roadside Fine

    E-Print Network [OSTI]

    Bertini, Robert L.

    variables; additionally, the effects of vehicle types and wind direction were quantified. Modeling resultsMoore et al. 1 Modeling the Impact of Traffic Conditions on the Variability of Mid-block Roadside Fine Particulate Matter Concentrations on an Urban Arterial Adam Moore, adam.moore@pdx.edu* Miguel

  6. Enhanced emission efficiency in organic light-emitting diodes using deoxyribonucleic acid complex as an electron blocking layer

    E-Print Network [OSTI]

    Cincinnati, University of

    as an integral element of organic light-emitting diodes OLED . Devices that incorporate DNA thin films#12;Enhanced emission efficiency in organic light-emitting diodes using deoxyribonucleic acid as an electron blocking EB material has been demonstrated in both green- and blue-emitting organic light

  7. Optimal integrated design of air separation unit and gas turbine block for IGCC systems

    SciTech Connect (OSTI)

    Kamath, R.; Grossman, I.; Biegler, L.; Zitney, S.

    2009-01-01

    The Integrated Gasification Combined Cycle (IGCC) systems are considered as a promising technology for power generation. However, they are not yet in widespread commercial use and opportunities remain to improve system feasibility and profitability via improved process integration. This work focuses on the integrated design of gasification system, air separation unit (ASU) and the gas turbine (GT) block. The ASU supplies oxygen to the gasification system and it can also supply nitrogen (if required as a diluent) to the gas turbine block with minimal incremental cost. Since both GT and the ASU require a source of compressed air, integrating the air requirement of these units is a logical starting point for facility optimization (Smith et al., 1997). Air extraction from the GT can reduce or avoid the compression cost in the ASU and the nitrogen injection can reduce NOx emissions and promote trouble-free operation of the GT block (Wimer et al., 2006). There are several possible degrees of integration between the ASU and the GT (Smith and Klosek, 2001). In the case of 'total' integration, where all the air required for the ASU is supplied by the GT compressor and the ASU is expected to be an elevated-pressure (EP) type. Alternatively, the ASU can be 'stand alone' without any integration with the GT. In this case, the ASU operates at low pressure (LP), with its own air compressor delivering air to the cryogenic process at the minimum energy cost. Here, nitrogen may or may not be injected because of the energy penalty issue and instead, syngas humidification may be preferred. A design, which is intermediate between these two cases, involves partial supply of air by the gas turbine and the remainder by a separate air compressor. These integration schemes have been utilized in some IGCC projects. Examples include Nuon Power Plant at Buggenum, Netherlands (both air and nitrogen integration), Polk Power Station at Tampa, US (nitrogen-only integration) and LGTI at Plaquemine, US (stand-alone). However, there is very little information on systematic assessment of air extraction, nitrogen injection and configuration and operating conditions of the ASU and it is not clear which scheme is optimal for a given IGCC application. In this work, we address the above mentioned problem systematically using mixed-integer optimization. This approach allows the use of various objectives such as minimizing the investment and operating cost or SOx and NOx emissions, maximizing power output or overall efficiency or a weighted combination of these factors. A superstructure is proposed which incorporates all the integration schemes described above. Simplified models for ASU, gas turbine system and steam cycle are used which provide reasonable estimates for performance and cost (Frey and Zhu, 2006). The optimal structural configuration and operating conditions are presented for several case studies and it is observed that the optimal solution changes significantly depending on the specified objective.

  8. Optimal Integrated Design of Air Separation Unit and Gas Turbine Block for IGCC Systems

    SciTech Connect (OSTI)

    Ravindra S. Kamath; Ignacio E. Grossmann; Lorenz T. Biegler; Stephen E. Zitney

    2009-01-01

    The Integrated Gasification Combined Cycle (IGCC) systems are considered as a promising technology for power generation. However, they are not yet in widespread commercial use and opportunities remain to improve system feasibility and profitability via improved process integration. This work focuses on the integrated design of gasification system, air separation unit (ASU) and the gas turbine (GT) block. The ASU supplies oxygen to the gasification system and it can also supply nitrogen (if required as a diluent) to the gas turbine block with minimal incremental cost. Since both GT and the ASU require a source of compressed air, integrating the air requirement of these units is a logical starting point for facility optimization (Smith et al., 1997). Air extraction from the GT can reduce or avoid the compression cost in the ASU and the nitrogen injection can reduce NOx emissions and promote trouble-free operation of the GT block (Wimer et al., 2006). There are several possible degrees of integration between the ASU and the GT (Smith and Klosek, 2001). In the case of 'total' integration, where all the air required for the ASU is supplied by the GT compressor and the ASU is expected to be an elevated-pressure (EP) type. Alternatively, the ASU can be 'stand alone' without any integration with the GT. In this case, the ASU operates at low pressure (LP), with its own air compressor delivering air to the cryogenic process at the minimum energy cost. Here, nitrogen may or may not be injected because of the energy penalty issue and instead, syngas humidification may be preferred. A design, which is intermediate between these two cases, involves partial supply of air by the gas turbine and the remainder by a separate air compressor. These integration schemes have been utilized in some IGCC projects. Examples include Nuon Power Plant at Buggenum, Netherlands (both air and nitrogen integration), Polk Power Station at Tampa, US (nitrogen-only integration) and LGTI at Plaquemine, US (stand-alone). However, there is very little information on systematic assessment of air extraction, nitrogen injection and configuration and operating conditions of the ASU and it is not clear which scheme is optimal for a given IGCC application. In this work, we address the above mentioned problem systematically using mixed-integer optimization. This approach allows the use of various objectives such as minimizing the investment and operating cost or SOx and NOx emissions, maximizing power output or overall efficiency or a weighted combination of these factors. A superstructure is proposed which incorporates all the integration schemes described above. Simplified models for ASU, gas turbine system and steam cycle are used which provide reasonable estimates for performance and cost (Frey and Zhu, 2006). The optimal structural configuration and operating conditions are presented for several case studies and it is observed that the optimal solution changes significantly depending on the specified objective.

  9. POSTER 04 EVALUATION OF BUILDING BLOCKS FOR PASSIVE ONE-WAY-DELAY MEASUREMENTS Abstract--Service Level Agreements (SLAs) specify the

    E-Print Network [OSTI]

    Zander, Sebastian

    POSTER 04 ­ EVALUATION OF BUILDING BLOCKS FOR PASSIVE ONE-WAY-DELAY MEASUREMENTS Abstract-- Service the necessary building blocks for passive one-way-delay measurement. In particular we discuss different for passive (non-intrusive) measurement methods avoiding the disadvantages of sending test traffic for active

  10. Urchin-inspired zinc oxide as building blocks for nanostructured solar cells

    E-Print Network [OSTI]

    Elias, Jamil; Utke, Ivo; Erni, Rolf; Hosseini, Davood; Michler, Johann; Philippe, Laetitia

    2012-01-01

    High surface area nanowire based architectures have been identified as important components for future optoelectronic nanodevices, solar cells, wettability coatings, gas sensors, and biofuel cells. Here we report on a novel urchin-inspired nanowire architecture: its interwoven three-dimensional, high-surface-area nanowire arrangement can be precisely controlled by using a low-cost and scalable synthesis based on a combination of nanosphere lithography, low-temperature atomic layer deposition, and electrodeposition. The performance of single-layer arrays of urchin-inspired ZnO nanowire building blocks competes to that of planar nanowire carpets. We illustrate this capability by fabricating fully-inorganic extremely thin absorber solar cells using CdSe as absorber and CuSCN as hole-collector material. The light diffusion of the urchin-inspired nanowire arrays was varied from 15% to 35%. Homogenous absorption in the wavelength range of 400-800 nm of up to 90% was obtained. Solar conversion efficiencies of ~ 1.33...

  11. Nanocluster building blocks of artificial square spin ice: Stray-field studies of thermal dynamics

    SciTech Connect (OSTI)

    Pohlit, Merlin Porrati, Fabrizio; Huth, Michael; Müller, Jens

    2015-05-07

    We present measurements of the thermal dynamics of a Co-based single building block of an artificial square spin ice fabricated by focused electron-beam-induced deposition. We employ micro-Hall magnetometry, an ultra-sensitive tool to study the stray field emanating from magnetic nanostructures, as a new technique to access the dynamical properties during the magnetization reversal of the spin-ice nanocluster. The obtained hysteresis loop exhibits distinct steps, displaying a reduction of their “coercive field” with increasing temperature. Therefore, thermally unstable states could be repetitively prepared by relatively simple temperature and field protocols allowing one to investigate the statistics of their switching behavior within experimentally accessible timescales. For a selected switching event, we find a strong reduction of the so-prepared states' “survival time” with increasing temperature and magnetic field. Besides the possibility to control the lifetime of selected switching events at will, we find evidence for a more complex behavior caused by the special spin ice arrangement of the macrospins, i.e., that the magnetic reversal statistically follows distinct “paths” most likely driven by thermal perturbation.

  12. Permutation blocking path integral Monte Carlo approach to the uniform electron gas at finite temperature

    E-Print Network [OSTI]

    Dornheim, Tobias; Groth, Simon; Filinov, Alexey; Bonitz, Michael

    2015-01-01

    The uniform electron gas (UEG) at finite temperature is of high current interest due to its key relevance for many applications including dense plasmas and laser excited solids. In particular, density functional theory heavily relies on accurate thermodynamic data for the UEG. Until recently, the only existing first-principle results had been obtained for $N=33$ electrons with restricted path integral Monte Carlo (RPIMC), for low to moderate density, $r_s = \\overline{r}/a_B \\gtrsim 1$. This data has been complemented by Configuration path integral Monte Carlo (CPIMC) simulations for $r_s \\leq 1$ that substantially deviate from RPIMC towards smaller $r_s$ and low temperature. In this work, we present results from an independent third method---the recently developed permutation blocking path integral Monte Carlo (PB-PIMC) approach [T. Dornheim \\textit{et al.}, NJP \\textbf{17}, 073017 (2015)] which we extend to the UEG. Interestingly, PB-PIMC allows us to perform simulations over the entire density range down to...

  13. Methods for estimating wake flow and effluent dispersion near simple block-like buildings

    SciTech Connect (OSTI)

    Hosker, R.P. Jr.

    1981-05-01

    This report is intended as an interim guide for those who routinely face air quality problems associated with near-building exhaust stack placement and height, and the resulting concentration patterns. Available data and methods for estimating wake flow and effluent dispersion near isolated block-like structures are consolidated. The near-building and wake flows are described, and quantitative estimates for frontal eddy size, height and extent of roof and wake cavities, and far wake behavior are provided. Concentration calculation methods for upwind, near-building, and downwind pollutant sources are given. For an upwind source, it is possible to estimate the required stack height, and to place upper limits on the likely near-building concentration. The influences of near-building source location and characteristics relative to the building geometry and orientation are considered. Methods to estimate effective stack height, upper limits for concentration due to flush roof vents, and the effect of changes in rooftop stack height are summarized. Current wake and wake cavity models are presented. Numerous graphs of important expressions have been prepared to facilitate computations and quick estimates of flow patterns and concentration levels for specific simple buildings. Detailed recommendations for additional work are given.

  14. Cross-Linked Nanoporous Materials from Reactive and Multifunctional Block Polymers

    SciTech Connect (OSTI)

    Seo, Myungeun; Amendt, Mark A.; Hillmyer, Marc A.

    2012-10-10

    Polylactide-b-poly(styrene-co-2-hydroxyethylmethacrylate) (PLA-b-P(S-co-HEMA)) and polylactide-b-poly(styrene-co-2-hydroxyethylacrylate) (PLA-b-P(S-co-HEA)) were synthesized by combination of ring-opening polymerization and reversible addition-fragmentation chain transfer polymerization. {sup 1}H nuclear magnetic resonance spectroscopy and size exclusion chromatography data indicated that the polymerizations were controlled and that hydroxyl groups were successfully incorporated into the block polymers. The polymers were reacted with 4,4{prime}-methylenebis(phenyl isocyanate) (MDI) to form the corresponding cross-linked materials. The materials were annealed at 150 C to complete the coupling reaction. Robust nanoporous materials were obtained from the cross-linked polymers by treatment with aqueous base to hydrolyze the PLA phase. Small-angle X-ray scattering study combined with scanning electron microscopy showed that MDI-cross-linked PLA-b-P(S-co-HEMA)/PLA-b-P(S-co-HEA) can adopt lamellar, hexagonally perforated lamellar, and hexagonally packed cylindrical morphologies after annealing. In particular, the HPL morphology was found to evolve from lamellae due to increase in volume fraction of PS phase as MDI reacted with hydroxyl groups. The reaction also kinetically trapped the morphology by cross-linking. Bicontinuous morphologies were also observed when dibutyltin dilaurate was added to accelerate reaction between the polymer and MDI.

  15. Microstructured block copolymer surfaces for control of microbe capture and aggregation

    SciTech Connect (OSTI)

    Hansen, Ryan R; Shubert, Katherine R; Morrell, Jennifer L.; Lokitz, Bradley S; Doktycz, Mitchel John; Retterer, Scott T

    2014-01-01

    The capture and arrangement of surface-associated microbes is influenced by biochemical and physical properties of the substrate. In this report, we develop lectin-functionalized substrates containing patterned, three-dimensional polymeric structures of varied shapes and densities and use these to investigate the effects of topology and spatial confinement on lectin-mediated microbe capture. Films of poly(glycidyl methacrylate)-block-4,4-dimethyl-2-vinylazlactone (PGMA-b-PVDMA) were patterned on silicon surfaces into line or square grid patterns with 5 m wide features and varied edge spacing. The patterned films had three-dimensional geometries with 900 nm film thickness. After surface functionalization with wheat germ agglutinin, the size of Pseudomonas fluorescens aggregates captured was dependent on the pattern dimensions. Line patterns with edge spacing of 5 m or less led to the capture of individual microbes with minimal formation of aggregates, while grid patterns with the same spacing also captured individual microbes with further reduction in aggregation. Both geometries allowed for increases in aggregate size distribution with increased in edge spacing. These engineered surfaces combine spatial confinement with affinity-based microbe capture based on exopolysaccharide content to control the degree of microbe aggregation, and can also be used as a platform to investigate intercellular interactions and biofilm formation in microbial populations of controlled sizes.

  16. Energies and radial distributions of B_s mesons - the effect of hypercubic blocking

    E-Print Network [OSTI]

    UKQCD Collaboration; J. Koponen

    2007-03-14

    This is a follow-up to our earlier work for the energies and the charge (vector) and matter (scalar) distributions for S-wave states in a heavy-light meson, where the heavy quark is static and the light quark has a mass about that of the strange quark. We study the radial distributions of higher angular momentum states, namely P- and D-wave states, using a "fuzzy" static quark. A new improvement is the use of hypercubic blocking in the time direction, which effectively constrains the heavy quark to move within a 2a hypercube (a is the lattice spacing). The calculation is carried out with dynamical fermions on a 16^3 times 32 lattice with a lattice spacing approximately 0.10 fm generated using the non-perturbatively improved clover action. The configurations were generated by the UKQCD Collaboration using lattice action parameters beta = 5.2, c_SW = 2.0171 and kappa = 0.1350. In nature the closest equivalent of this heavy-light system is the B_s meson. Attempts are now being made to understand these results in terms of the Dirac equation.

  17. Electrical Resistivity Investigation of Gas Hydrate Distribution in Mississippi Canyon Block 118, Gulf of Mexico

    SciTech Connect (OSTI)

    Dunbar, John

    2012-12-31

    Electrical methods offer a geophysical approach for determining the sub-bottom distribution of hydrate in deep marine environments. Methane hydrate is essentially non-conductive. Hence, sediments containing hydrate are more resistive than sediments without hydrates. To date, the controlled source electromagnetic (CSEM) method has been used in marine hydrates studies. This project evaluated an alternative electrical method, direct current resistivity (DCR), for detecting marine hydrates. DCR involves the injection of direct current between two source electrodes and the simultaneous measurement of the electric potential (voltage) between multiple receiver electrodes. The DCR method provides subsurface information comparable to that produced by the CSEM method, but with less sophisticated instrumentation. Because the receivers are simple electrodes, large numbers can be deployed to achieve higher spatial resolution. In this project a prototype seafloor DCR system was developed and used to conduct a reconnaissance survey at a site of known hydrate occurrence in Mississippi Canyon Block 118. The resulting images of sub-bottom resistivities indicate that high-concentration hydrates at the site occur only in the upper 50 m, where deep-seated faults intersect the seafloor. Overall, there was evidence for much less hydrate at the site than previously thought based on available seismic and CSEM data alone.

  18. Design study of 15-Tesla RHQT Nb3Al block type dipole magnet

    SciTech Connect (OSTI)

    Yamada, R.; Ambrosio, G.; Barzi, E.; Kashikin, V.; Kikuchi, A.; Novitski, I.; Takeuchi, T.; Wake, M.; Zlobin, A.; /Fermilab /NIMC, Tsukuba /KEK, Tsukuba

    2005-09-01

    The design study of the block type 15-Tesla RHQT Nb{sub 3}Al dipole magnet, and its merits over Nb{sub 3}Sn magnets are presented. The copper stabilized RHQT Nb{sub 3}Al strand is now becoming commercially available for the application to the accelerator magnets. A 1 mm diameter RHQT Nb{sub 3}Al strand with filament size about 50 {mu}, non-copper Jc about 1000 A/mm{sup 2} at 15 Tesla at 4.2K, copper ratio of 50%, can now be produced over several hundred meters. The stress and strain characteristics of the Nb{sub 3}Al strand are superior to the Nb{sub 3}Sn strand. Another advantage is that it can tolerate a longitudinal strain up to 0.55%. The RHQT Nb{sub 3}Al Rutherford cable will have less chance of contamination of the stabilizer, compared to Nb{sub 3}Sn cable. These characteristics of the RHQT Nb{sub 3}Al will be beneficial for designing and producing 15-Tesla dipole magnets. An example 15-Tesla magnet cross section, utilizing the RHQT Nb{sub 3}Sn strand is presented. A systematic investigation on RHQT Nb{sub 3}Al strands, its Rutherford cables, and building a small racetrack magnet for cable testing are proposed.

  19. Sedimentary Rocks (GEO 416M) Spring 2011

    E-Print Network [OSTI]

    Yang, Zong-Liang

    Facies and Classification B11, T&W 2 13-Apr WK EXAM 3 15-Apr WF Carbonate Facies and Classification B11 or 5th edition) *Other texts (library reserve): T&W; Tucker, M.E. and Wright, V.P. (1990), Carbonate

  20. Sedimentary Geothermal Systems | 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 Report UrlNM-bRenewableSMUDSectional Model Flume

  1. Use of shock block transmitters in the structural rehabilitation of historical buildings in Calabria and Sicily

    SciTech Connect (OSTI)

    Bianco, Alessia [Lab. M.A.Re., PAU Department, Mediterranean University of Reggio Calabria (Italy); Candela, Michele [PAU Department, Mediterranean University of Reggio Calabria (Italy); Fonti, Roberta [Graduated in SCBAA, Faculty of Architecture, Mediterranean University of Reggio Calabria (Italy)

    2008-07-08

    Many old and historical masonry buildings, located in the Calabrian and Sicilian areas near the strait of Messina, are affected by typical pattern of cracks, which are not produced by previous earthquakes. These cracks in the masonry walls are characterized by a quasi-vertical trend with constant width. The careful examination of the crack distribution allows to clearly identify the diagnosis: the damage is caused by the sinking due to a horizontal movement of translation of the ground, which is an evident effect of creep phenomena in the soil, so-called 'solifluxion'. This paper, after showing this geological pathology, proposes an innovative strategy of intervention, which consists of the use of 'oleo-dynamic' devices, so-called shock block transmitters, providing different degrees of restraint, according to the loading conditions. In addition, in case of earthquake, an important part of the in-put seismic energy can be dissipated. The strategy of application of this system to the building consists of the subdivision of each masonry wall in two different parts, which are physically separated by the cracks. Each wall portion must be consolidated separately and the different parts of walls behave as statically independent each other, so that they can move independently during the serviceability conditions. The connection among the walls composing the whole structural organism is given by metal tie-rods equipped with 'oleo dynamic' devices, which allows, in a given range, the horizontal sliding in case of slow movement due to the phenomenon of 'solifluxion'. Contrary, in case of dynamic and fast movements, such as the ones produced by an earthquake, each 'oleo dynamic' device provides a fully restraint effect and, as a consequence, the tie-rods behave in the classical way.

  2. Occurrence of gas hydrate in Oligocene Frio sand: Alaminos Canyon Block 818: Northern Gulf of Mexico

    SciTech Connect (OSTI)

    Boswell, R.D.; Shelander, D.; Lee, M.; Latham, T.; Collett, T.; Guerin, G.; Moridis, G.; Reagan, M.; Goldberg, D.

    2009-07-15

    A unique set of high-quality downhole shallow subsurface well log data combined with industry standard 3D seismic data from the Alaminos Canyon area has enabled the first detailed description of a concentrated gas hydrate accumulation within sand in the Gulf of Mexico. The gas hydrate occurs within very fine grained, immature volcaniclastic sands of the Oligocene Frio sand. Analysis of well data acquired from the Alaminos Canyon Block 818 No.1 ('Tigershark') well shows a total gas hydrate occurrence 13 m thick, with inferred gas hydrate saturation as high as 80% of sediment pore space. Average porosity in the reservoir is estimated from log data at approximately 42%. Permeability in the absence of gas hydrates, as revealed from the analysis of core samples retrieved from the well, ranges from 600 to 1500 millidarcies. The 3-D seismic data reveals a strong reflector consistent with significant increase in acoustic velocities that correlates with the top of the gas-hydrate-bearing sand. This reflector extends across an area of approximately 0.8 km{sup 2} and delineates the minimal probable extent of the gas hydrate accumulation. The base of the inferred gas-hydrate zone also correlates well with a very strong seismic reflector that indicates transition into units of significantly reduced acoustic velocity. Seismic inversion analyses indicate uniformly high gas-hydrate saturations throughout the region where the Frio sand exists within the gas hydrate stability zone. Numerical modeling of the potential production of natural gas from the interpreted accumulation indicates serious challenges for depressurization-based production in settings with strong potential pressure support from extensive underlying aquifers.

  3. Adaptive dimension reduction for clustering high dimensional data Chris Ding a , Xiaofeng He a , Hongyuan Zha b and Horst D. Simon a

    E-Print Network [OSTI]

    Ding, Chris

    ) and reduces computational cost. In most applications, dimension reduction is carried out as a preprocessingAdaptive dimension reduction for clustering high dimensional data Chris Ding a , Xiaofeng He in local minimum. Many initialization methods were proposed to tackle this problem , but with only limited

  4. A review of "Van Dyck: A Complete Catalogue of the Paintings." by Susan J. Barnes, Nora De Poorter, Oliver Millar, Horst Vey, eds. 

    E-Print Network [OSTI]

    Maureen E. Mulvihill

    2006-01-01

    This study develops an approach to developing surface shading for computer-generated 3D head models that adapts aesthetics from the post-impressionist portrait painting style of Vincent Van Gogh. This research is an attempt to reconcile a 2D...

  5. Apparent Semiconductor Type Reversal in Anatase TiO2 Nanocrystalline Films David S. Warren,*, Yoram Shapira, Horst Kisch, and A. James McQuillan

    E-Print Network [OSTI]

    Shapira, Yoram

    is conducive to photocatalysis. Photocatalysis at semiconductor surfaces has been extensively investigated over contains about 80% anatase and 20% rutile, has emerged as the benchmark material.3 Photocatalysis studies that the presence of water is important for photocatalysis,10-11 but its exact role in the process is poorly

  6. Controlling the micellar morphology of binary PEO-PCL block copolymers in water-THF through controlled blending

    E-Print Network [OSTI]

    P. Schuetz; M. J. Greenall; J. Bent; S. Furzeland; D. Atkins; M. F. Butler; T. C. B. McLeish; D. M. A. Buzza

    2011-06-27

    We study both experimentally and theoretically the self-assembly of binary block copolymers in dilute solution, where self-assembly is triggered by changing the solvent from the common good solvent THF to the selective solvent water, and where the two species on their own in water form vesicles and spherical micelles respectively. We find that in water the inter-micellar exchange of these block copolymers is very slow so that the self-assembled structures are in local but not global equilibrium (i.e., they are non-ergodic). This opens up the possibility of controlling micelle morphology both thermodynamically and kinetically. Specifically, when the two species are first dissolved in THF before mixing and self-assembly (`premixing') by dilution with water, the morphology is found to depend on the mixing ratio of the two species, going gradually from vesicles via `bulbed' rods, rings, Y-junctions and finally to spherical micelles as we increase the proportion of the sphere-formers. On the other hand, if the two species are first partially self-assembled (by partial exchange of the solvent with water) before mixing and further self-assembly (`intermediate mixing'), novel metastable structures, including nanoscopic pouches, emerge. These experimental results are corroborated by self-consistent field theory calculations (SCFT) which reproduce the sequence of morphologies seen in the pre-mixing experiments. SCFT also reveals a clear coupling between polymer composition and aggregate curvature, with regions of positive and negative curvature being stabilized by an enrichment and depletion of sphere formers respectively. Our study demonstrates that both thermodynamic and kinetic blending of block copolymers are effective design parameters to control the resulting structures and allow us to access a much richer range of nano-morphologies than is possible with monomodal block copolymer solutions.

  7. Mixed-Salt Effects on the Ionic Conductivity of Lithium-Doped PEO-Containing Block Copolymers

    SciTech Connect (OSTI)

    Young, Wen-Shiue; Albert, Julie N.L.; Schantz, A. Benjamin; Epps, III, Thomas H.

    2012-10-10

    We demonstrate a simple, yet effective, mixed-salt method to increase the room temperature ionic conductivity of lithium-doped block copolymer electrolyte membranes by suppressing the crystalline phases in the conducting block. We examined a mixed-salt system of LiClO{sub 4} and LiN(SO{sub 2}CF{sub 3}){sub 2} (LiTFSI) doped into a lamellae-forming poly(styrene-b-ethylene oxide) (PS-PEO) diblock copolymer. The domain spacings, morphologies, thermal behavior, and crystalline phases of salt-doped PS-PEO samples were characterized, and the ionic conductivities of block copolymer electrolytes were obtained through ac impedance measurements. Comparing the ionic conductivity profiles of salt-doped PS-PEO samples at different mixed-salt ratios and total salt concentrations, we found that the ionic conductivity at room temperature can be improved by more than an order of magnitude when coinhibition of crystallite growth is promoted by the concerted behavior of the PEO:LiClO{sub 4} and PEO:LiTFSI phases. Additionally, we examined the influence of mixed-salt ratio and total salt concentration on copolymer energetics, and we found that the slope of the effective interaction parameter ({chi}{sub eff}) vs salt concentration in our lamellae-forming PS-PEO system was lower than that reported for a cylinder-forming PS-PEO system due to the balance between chain stretching and salt segregation in the PEO domains.

  8. MKP-7, a JNK phosphatase, blocks ERK-dependent gene activation by anchoring phosphorylated ERK in the cytoplasm

    SciTech Connect (OSTI)

    Masuda, Kouhei; Katagiri, Chiaki [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan) [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan); Division of Biochemical Oncology and Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo (Japan); Nomura, Miyuki [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan)] [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan); Sato, Masami [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan) [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan); Thoracic Surgery, Miyagi Cancer Center, Natori (Japan); Kakumoto, Kyoko [Laboratory of Molecular Oncology, Osaka Bioscience Institute, Osaka (Japan)] [Laboratory of Molecular Oncology, Osaka Bioscience Institute, Osaka (Japan); Akagi, Tsuyoshi [Laboratory of Molecular Oncology, Osaka Bioscience Institute, Osaka (Japan) [Laboratory of Molecular Oncology, Osaka Bioscience Institute, Osaka (Japan); Kan Research Institute, Kobe (Japan); Kikuchi, Kunimi [Division of Biochemical Oncology and Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo (Japan)] [Division of Biochemical Oncology and Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo (Japan); Tanuma, Nobuhiro [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan)] [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan); Shima, Hiroshi, E-mail: shima-hi632@pref.miyagi.jp [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan)] [Division of Cancer Chemotherapy, Miyagi Cancer Center Research Institute, Natori (Japan)

    2010-03-05

    MAPK phosphatase-7 (MKP-7) was identified as a JNK-specific phosphatase. However, despite its high specificity for JNK, MKP-7 interacts also with ERK. We previously showed that as a physiological consequence of their interaction, activated ERK phosphorylates MKP-7 at Ser-446, and stabilizing MKP-7. In the present study, we analyzed MKP-7 function in activation of ERK. A time-course experiment showed that both MKP-7 and its phosphatase-dead mutant prolonged mitogen-induced ERK phosphorylation, suggesting that MKP-7 functions as a scaffold for ERK. An important immunohistological finding was that nuclear translocation of phospho-ERK following PMA stimulation was blocked by co-expressed MKP-7 and, moreover, that phospho-ERK co-localized with MKP-7 in the cytoplasm. Reporter gene analysis indicated that MKP-7 blocks ERK-mediated transcription. Overall, our data indicate that MKP-7 down-regulates ERK-dependent gene expression by blocking nuclear accumulation of phospho-ERK.

  9. Nanomaterials, such as carbon nanotubes and graphene, and biomaterials, such as proteins and other biopolymers, are promising building blocks for smart functional materials. Being "Smart" towards external stimuli such as stress, chemical reactions, pH,

    E-Print Network [OSTI]

    Tsymbal, Evgeny Y.

    biopolymers, are promising building blocks for smart functional materials. Being "Smart" towards external multiscale, multiphysical simulations and computational designs of smart functional materials, using nanomaterials and biomaterials as novel building blocks with atomistic/molecular details. His future research

  10. Final Technical Report - Commercially Important Carbohydrate Diacids - Building Blocks from Renewable Carbohydrates

    SciTech Connect (OSTI)

    Kiely, Donald E.

    2009-01-07

    The primary objective of this project was to develop oxidation methods appropriate for the conversion of agriculturally derived simple sugars to their corresponding diacids (aldaric acids) for use as biobased chemical building blocks for new biodegradable polymers and other materials. Principal target diacids were D-glucaric, meso-xylaric, D-mannaric and L-arabinaric acid, each to be prepared by nitric acid oxidation of the naturally occurring precursor carbohydrates (monosaccharides) D-glucose, D-xylose, D-mannose and L-arabinose, respectively, all from hydrolysis of naturally abundant plant polysaccharides. These conversions were to be designed for scale up to a level suitable for transfer first to a pilot plant scale, and then to an industrial plant scale. The core of the project involved a comprehensive study of the title oxidation employing a computer controlled reactor. The plan of action involved defining experimental parameters to allow for control of the oxidations with considerable precision and reproducibility. The prototype oxidations were typically run using ca. 0.75 molar amounts of carbohydrate, with a goal of eventually doubling the reaction size when appropriate reaction parameters were established. During the course of the funding period for this grant, the fundamentals of reaction control were established for oxidation of D-glucose, a critical component of the project given the exothermic character of the reaction. The reactions were monitored using a reliable GC/MS protocol. The glucose to glucaric acid conversion represented the most important and potentially highest value conversion. During the grant period we were able to establish one workable system to carry out the glucose to glucaric acid conversion, but were not able to optimize the process or establish a protocol that was satisfactory for a scale up to a pilot plant scale. However, the work carried out showed the possibility that with appropriate innovation and continued effort, a prototype for a successful pilot plant scale operation might be possible. It was not possible to explore oxidations with the other simple sugars indicated during the time frame of this project. A graduate student, J. Brand, and an undergraduate student, B. Oâ??Connor received partial support for research done on the project. A manuscript for publication entitled ANitric Acid Oxidation of D-Glucose to D-Glucaric Acid: Improved Process and Analytical Assessment@, is in preparation for submission to Industrial & Engineering Chemistry Research or Carbohydrate Research.

  11. 3-D structural and seismic stratigraphic interpretation of the Guasare-Misoa Interval, VLE 196 Area, Block V, Lamar Field, Lake Maracaibo, Venezuela 

    E-Print Network [OSTI]

    Arzuman, Sadun

    2004-09-30

    In this study, the structure, depositional system, and the seismic stratigraphy of the VLE 196 area, Block V in Lamar Field were interpreted using 3-D seismic data and well logs to characterize structural and depositional settings of the Guasare...

  12. Hotel Room Reservations for September 2015 The University of Winnipeg Alumni Affairs has arranged for a block of hotel rooms at

    E-Print Network [OSTI]

    Martin, Jeff

    . #12;Sparrow Hotels Inn at the Forks Standard Queen Guestroom $189 75 Forks Market Road Superior King applicable taxes Depending on availability Net non-commissionable rates Not a group block Individual

  13. Using ordered partial binary decision diagrams, forced basis nodes, and the blocking method for observability to calculate bounds on testability analysis measures 

    E-Print Network [OSTI]

    Crofts, Andrew H.

    1995-01-01

    PARFAIT is a testability analysis (TA) program that introduces two novel concepts to increase speed and accuracy of results. The first is the blocking method, a linear algorithm for calculating observability that targets single path propagations...

  14. Compressible Solution Properties of Amorphous Polystyrene-block-Polybutadiene, Crystalline Polystyrene-block-Poly(Hydrogenated Polybutadiene) and Their Corresponding Homopolymers: Fluid-Fluid, Fluid-Solid and Fluid-Micelle Phase Transitions in Propane and Propylene

    SciTech Connect (OSTI)

    Hong, Kunlun; Mays, Jimmy; Winoto, Winoto; Radosz, Maciej

    2009-01-01

    Abstract Polystyrene, polybutadiene, hydrogenated polybutadiene, and styrene diblock copolymers of these homopolymers can form homogenous solutions in compressible solvents, such as propane and propylene, which separate into two bulk phases upon reducing pressure. The cloud and micellization pressures for homopolymer and diblock copolymers are generally found to be higher in propane than in propylene, except for hydrogenated polybutadiene and polystyrene-block-(hydrogenated polybutadiene). Hydrogenated polybutadiene homopolymers and copolymers exhibit relatively pressure-independent crystallization and melting observed in both propane and propylene solutions.

  15. Facies analyses and environment of deposition for the Jurassic "A" zone of the "Mulussa" (Dolaa) Group, in the Homs block, Syria 

    E-Print Network [OSTI]

    Quintana, Miguel Alfredo

    1988-01-01

    mainly sequences of alternating limestone, dolomite, anhydrite, rare siltstones, and shales. These rocks are interpreted to represent tidal-flat and sabkha deposits along the southeast margin of the Palmyrid trough along the Rutbah high... of the Horns block, with wells and Jurassic outcrops (shaded pattern). Position of Palmyrid Trough within the Arabian Plate (Adapted from Lovelock, 1984) Major structural framework surrounding the Horns block (After Rowell and Swan- son, 1984...

  16. Self-Assembly of Charged Amphiphilic Diblock Copolymers with Insoluble Blocks of Decreasing Hydrophobicity: From Kinetically Frozen Colloids to Macrosurfactants

    SciTech Connect (OSTI)

    M Jacquin; P Muller; H Cottet; O Theodoly

    2011-12-31

    We have investigated the self-assembly properties in aqueous solution of amphiphilic diblock copolymers with insoluble blocks of different hydrophobicity and demonstrated that the condition to obtain dynamic micelles is to design samples with insoluble blocks of low enough hydrophobicity. We focus here on results with new water-soluble amphiphilic diblock copolymers poly(diethyleneglycol ethylether acrylate)-b-poly(acrylic acid), or PDEGA-b-PAA. The physical characteristics of PDEGA-b-PAA micelles at high ionization have been determined by small angle neutron scattering (SANS). We show that PDEGA-b-PAA samples form micelles at thermodynamic equilibrium. The critical micelle concentrations (CMCs) decrease strongly with ionic strength and temperature due to a solvent quality decrease for, respectively, the corona and the core. This behavior of reversible aggregation is remarkable as compared to the behavior of kinetically frozen aggregation that has been widely observed with samples of similar architecture and different hydrophobic blocks, for example, poly(styrene)-b-poly(acrylic acid), PS-b-PAA, and poly(butyl acrylate)-b-poly(acrylic acid), PBA-b-PAA. We have measured the interfacial tension between water and the homopolymers PDEGA and PBA at, respectively, 3 and 20 mN/m at room temperature, which permits one to estimate the energy cost to extract a unimer from a micelle. The results are consistent with a micelle association that is fast for PDEGA-b-PAA and kinetically frozen PBA-b-PAA. Hence, PDEGA-b-PAA samples form a new system of synthetic charged macrosurfactant with unique properties of fast dynamic association, tunable charge, and water solubility even at temperatures and NaCl concentrations as high as 65 C and 1 M.

  17. Electron Transfer within Self-Assembling Cyclic Tetramers Using Chlorophyll-Based Donor?Acceptor Building Blocks

    SciTech Connect (OSTI)

    Gunderson, Victoria L.; Smeigh, Amanda L.; Kim, Chul Hoon; Co, Dick T.; Wasielewski, Michael R. (NWU)

    2012-05-09

    The synthesis and photoinduced charge transfer properties of a series of Chl-based donor-acceptor triad building blocks that self-assemble into cyclic tetramers are reported. Chlorophyll a was converted into zinc methyl 3-ethylpyrochlorophyllide a (Chl) and then further modified at its 20-position to covalently attach a pyromellitimide (PI) acceptor bearing a pyridine ligand and one or two naphthalene-1,8:4,5-bis(dicarboximide) (NDI) secondary electron acceptors to give Chl-PI-NDI and Chl-PI-NDI2. The pyridine ligand within each ambident triad enables intermolecular Chl metal-ligand coordination in dry toluene, which results in the formation of cyclic tetramers in solution, as determined using small- and wide-angle X-ray scattering at a synchrotron source. Femtosecond and nanosecond transient absorption spectroscopy of the monomers in toluene-1% pyridine and the cyclic tetramers in toluene shows that the selective photoexcitation of Chl results in intramolecular electron transfer from 1*Chl to PI to form Chl+{lg_bullet}-PI-{lg_bullet}-NDI and Chl+{lg_bullet}-PI-{lg_bullet}-NDI2. This initial charge separation is followed by a rapid charge shift from PI-{lg_bullet} to NDI and subsequent charge recombination of Chl+{lg_bullet}-PI-NDI-{lg_bullet} and Chl+{lg_bullet}-PI-(NDI)NDI-{lg_bullet} on a 5-30 ns time scale. Charge recombination in the Chl-PI-NDI2 cyclic tetramer ({tau}CR = 30 {+-} 1 ns in toluene) is slower by a factor of 3 relative to the monomeric building blocks ({tau}CR = 10 {+-} 1 ns in toluene-1% pyridine). This indicates that the self-assembly of these building blocks into the cyclic tetramers alters their structures in a way that lengthens their charge separation lifetimes, which is an advantageous strategy for artificial photosynthetic systems.

  18. Sorption (Kd) measurements on cinder block and grout in support of dose assessments for Zion Nuclear Station decommissioning

    SciTech Connect (OSTI)

    Milian L.; Sullivan T.

    2014-06-24

    The Zion Nuclear Power Station is being decommissioned. ZionSolutions proposes to leave much of the below grade structures in place and to fill them with a backfill to provide structural support. Backfills under consideration include “clean” concrete demolition debris from the above grade parts of the facility, a flowable grout, cinder block construction debris and sand. A previous study (Yim, 2012) examined the sorption behavior of five nuclides (Fe-55, Co-60, Ni-63, Sr-85, and Cs-137) on concrete and local soils. This study, commissioned by ZionSolutions and conducted by the Brookhaven National Laboratory (BNL) examines the sorption behavior on cinder block and grout materials. Specifically, this study measured the distribution coefficient for four radionuclides of concern using site-groundwater and cinder block from the Zion site and a flowable grout. The distributions coefficient is a measure of the amount of the radionuclide that will remain sorbed to the solid material that is present relative to the amount that will remain in solution. A high distribution coefficient indicates most of the radionuclide will remain on the solid material and will not be available for transport by the groundwater. The radionuclides examined in this set of tests were Co-60, Ni-63, Sr-85, and Cs-137. Tests were performed following ASTM C1733-10, Standard Test Methods for Distribution Coefficients of Inorganic Species by the Batch Method. Sr-85 was used in the testing as an analogue for Sr-90 because it behaves similarly with respect to sorption and has a gamma emission that is easier to detect than the beta emission from Sr-90.

  19. Statistical mechanical models for dissociative adsorption of O2 on metal(100) surfaces with blocking, steering, and funneling

    SciTech Connect (OSTI)

    Evans, James W. [Ames Laboratory; Liu, Da-Jiang [Ames Laboratory

    2014-05-20

    We develop statistical mechanical models amenable to analytic treatment for the dissociative adsorption of O2 at hollow sites on fcc(100) metal surfaces. The models incorporate exclusion of nearest-neighbor pairs of adsorbed O. However, corresponding simple site-blocking models, where adsorption requires a large ensemble of available sites, exhibit an anomalously fast initial decrease in sticking. Thus, in addition to blocking, our models also incorporate more facile adsorption via orientational steering and funneling dynamics (features supported by ab initio Molecular Dynamics studies). Behavior for equilibrated adlayers is distinct from those with finite adspecies mobility. We focus on the low-temperature limited-mobility regime where analysis of the associated master equations readily produces exact results for both short- and long-time behavior. Kinetic Monte Carlo simulation is also utilized to provide a more complete picture of behavior. These models capture both the initial decrease and the saturation of the experimentally observed sticking versus coverage, as well as features of non-equilibrium adlayer ordering as assessed by surface-sensitive diffraction.

  20. Statistical mechanical models for dissociative adsorption of O{sub 2} on metal(100) surfaces with blocking, steering, and funneling

    SciTech Connect (OSTI)

    Evans, James W. [Ames Laboratory – USDOE, Iowa State University, Ames, Iowa 50011 (United States) [Ames Laboratory – USDOE, Iowa State University, Ames, Iowa 50011 (United States); Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States); Liu, Da-Jiang [Ames Laboratory – USDOE, Iowa State University, Ames, Iowa 50011 (United States)] [Ames Laboratory – USDOE, Iowa State University, Ames, Iowa 50011 (United States)

    2014-05-21

    We develop statistical mechanical models amenable to analytic treatment for the dissociative adsorption of O{sub 2} at hollow sites on fcc(100) metal surfaces. The models incorporate exclusion of nearest-neighbor pairs of adsorbed O. However, corresponding simple site-blocking models, where adsorption requires a large ensemble of available sites, exhibit an anomalously fast initial decrease in sticking. Thus, in addition to blocking, our models also incorporate more facile adsorption via orientational steering and funneling dynamics (features supported by ab initio Molecular Dynamics studies). Behavior for equilibrated adlayers is distinct from those with finite adspecies mobility. We focus on the low-temperature limited-mobility regime where analysis of the associated master equations readily produces exact results for both short- and long-time behavior. Kinetic Monte Carlo simulation is also utilized to provide a more complete picture of behavior. These models capture both the initial decrease and the saturation of the experimentally observed sticking versus coverage, as well as features of non-equilibrium adlayer ordering as assessed by surface-sensitive diffraction.