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Sample records for djusted gro wth

  1. Jefferson Lab Signs Contract Wth SensL For Silicon Photomultiplier...

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

    articlesjefferson-lab-signs-contract-wth-sensl-silicon-photomultiplier-technology-photonics-o... Jefferson Lab Signs Contract Wth SensL For Silicon Photomultiplier Technology...

  2. GroSolar | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to:ResourcesGriggs County, NorthGroSolar Jump to:

  3. Allostery Wiring Diagrams in the Transitions that Drive the GroEL Reaction Cycle

    E-Print Network [OSTI]

    Thirumalai, Devarajan

    Allostery Wiring Diagrams in the Transitions that Drive the GroEL Reaction Cycle Riina Tehver1 the course of a reaction cycle, biological machines in general, and Escherichia coli chaperonin Gro cycle and undergo large-scale motions that are anticorrelated with the other apical domain residues

  4. GroBot : an open-source model for controlled environment agriculture

    E-Print Network [OSTI]

    Feshbach, Emma (Emma Elizabeth)

    2015-01-01

    The growing demand for food challenges our current farming methods, motivating the search for new paradigms for agricultural production. In this work, the GroBot is presented as an open-source model for the fourth agricultural ...

  5. A HYBRID MAGNETICALLY/THERMALLY DRIVEN WIND IN THE BLACK HOLE GRO J1655–40?

    E-Print Network [OSTI]

    Homan, Jeroen

    During its 2005 outburst, GRO J1655-40 was observed twice with the Chandra High Energy Transmission Grating Spectrometer; the second observation revealed a spectrum rich with ionized absorption lines from elements ranging ...

  6. BeppoSAX observations of GRO J1744-28

    E-Print Network [OSTI]

    Doroshenko, R; Doroshenko, V; Suleimanov, V; Piraino, S

    2015-01-01

    We present an analysis of BeppoSAX observations of the unique transient bursting X-ray pulsar GRO J1744-28. The observations took place in March 1997 during the decay phase of the outburst. We find that the persistent broadband X-ray continuum of the source is consistent with a cutoff power law typical for the accreting pulsars. We also detect the fluorescence iron line at 6.7 keV and an absorption feature at ~4.5 keV, which we interpret as a cyclotron line. The corresponding magnetic field strength in the line forming region is ~3.7 x 10^11 G. Neither line is detected in the spectra of the bursts. However, additional soft thermal component with kT ~2 keV was required to describe the burst spectrum. We briefly discuss the nature of this component and argue that among other possibilities it might be connected with thermonuclear flashes at the neutron star surface which accompany the accretion-powered bursts in the source.

  7. Evidence for Centrifugal Barrier in X-ray Pulsar GRO J1744-28

    E-Print Network [OSTI]

    Wei Cui

    1997-12-13

    We present further observational evidence of the effects of a centrifugal barrier in GRO J1744-28, based on continued monitoring of the source with RXTE. For X-ray pulsars, the centrifugal barrier manifests itself in the cessation of pulsed emission when the source becomes faint. We show that such phenomenon occurred repeatedly for GRO J1744-28, following the decay of two X-ray outbursts. This has allowed a direct measurement of the dipole field strength for this pulsar. Here we argue that some of the other peculiar properties observed of this source may also be related to an active centrifugal barrier.

  8. CONFIRMATION OF A HIGH MAGNETIC FIELD IN GRO J1008–57

    E-Print Network [OSTI]

    Bellm, Eric C.

    GRO J1008–57 is a high-mass X-ray binary for which several claims of a cyclotron resonance scattering feature near 80 keV have been reported. We use NuSTAR, Suzaku, and Swift data from its giant outburst of 2012 November ...

  9. Exploring the structural dynamics of the E. coli chaperonin GroEL using translation-libration-screw crystallographic refinement of intermediate states

    SciTech Connect (OSTI)

    Chaudhry, Charu; Horwich, Arthur L.; Brunger, Axel T.; Adams, Paul D.

    2004-08-12

    Large rigid-body domain movements are critical to GroEL-mediated protein folding, especially apical domain elevation and twist associated with the formation of a folding chamber upon binding ATP and co-chaperonin GroES. Here, we have modeled the anisotropic displacements of GroEL domains from various crystallized states, unliganded GroEL, ATP?S-bound, ADP-AlFx/GroES-bound, and ADP/GroES bound, using translation-libration-screw (TLS) analysis. Remarkably, the TLS results show that the inherent motions of unliganded GroEL, a polypeptide-accepting state, are biased along the transition pathway that leads to the folding-active state. In the ADP-AlFx/GroES-bound folding-active state the dynamic modes of the apical domains become reoriented and coupled to the motions of bound GroES. The ADP/GroES complex exhibits these same motions, but they are increased in magnitude, potentially reflecting the decreased stability of the complex after nucleotide hydrolysis. Our results have allowed the visualization of the anisotropic molecular motions that link the static conformations previously observed by X-ray crystallography. Application of the same analyses to other macromolecules where rigid body motions occur may give insight into the large scale dynamics critical for function and thus has the potential to extend our fundamental understanding of molecular machines.

  10. GRO J1655-40: Early Stages of the 2005 Outburst

    E-Print Network [OSTI]

    N. Shaposhnikov; J. Swank; C. R. Shrader; M. Rupen; V. Beckmann; C. B. Markwardt; D. A. Smith

    2006-09-27

    The black-hole X-ray binary transient GRO J1655-40 underwent an outburst beginning in early 2005. We present the results of our multi-wavelength observational campaign to study the early outburst spectral and temporal evolution, which combines data from X-ray (RXTE, INTEGRAL), radio (VLA) and optical (ROTSE, SMARTS) instruments. During the reported period the source left quiescence and went through four major accreting black hole states: low-hard, hard intermediate, soft intermediate and high-soft. We investigated dipping behavior in the RXTE band and compare our results to the 1996-1997 case, when the source was predominantly in the high-soft state, finding significant differences. We consider the evolution of the low frequency quasi-periodic oscillations and find that the frequency strongly correlates with the spectral characteristics, before shutting off prior to the transition to the high-soft state. We model the broad-band high-energy spectrum in the context of empirical models, as well as more physically motivated thermal and bulk-motion Comptonization and Compton reflection models. RXTE and INTEGRAL data together support a statistically significant high energy cut-off in the energy spectrum at 100~200 keV during the low-hard state. The RXTE data alone also show it very significantly during the transition, but cannot see one in the high-soft state spectra. We consider radio, optical and X-ray connections in the context of possible synchrotron and synchrotron self-Compton origins of X-ray emission in low-hard and intermediate states. In this outburst of GRO J1655-40, the radio flux does not rise strongly with the X-ray flux.

  11. Thermonuclear Burning on the Accreting X-Ray Pulsar GRO J1744-28

    E-Print Network [OSTI]

    Lars Bildsten; Edward F. Brown

    1996-09-23

    We investigate the thermal stability of nuclear burning on the accreting X-ray pulsar GRO J1744-28. The neutron star's dipolar magnetic field is thermonuclear instabilities are unlikely causes of the hourly bursts seen at very high accretion rates. We then discuss how the stability of the thermonuclear burning depends on both the global accretion rate and the neutron star's magnetic field strength. We emphasize that the appearance of the instability (i.e., whether it looks like a Type I X-ray burst or a flare lasting a few minutes) will yield crucial information on the neutron star's surface magnetic field and the role of magnetic fields in convection. We suggest that a thermal instability in the accretion disk is the origin of the long (~300 days) outburst and that the recurrence time of these outbursts is >50 years. We also discuss the nature of the binary and point out that a velocity measurement of the stellar companion (most likely a Roche-lobe filling giant with m_K>17) will constrain the neutron star mass.

  12. Bodo Bauer, Rdiger Berlich, Daniel Bischof, Michael Burghart, Roland Dyroff, Christian Egle, Karl Eichwalder, Stefan Fent, Werner Fink, Klaus Franken, Fritz Ganter, Jrgen Geck, Carsten Gro,

    E-Print Network [OSTI]

    Bremen, Universität

    Bodo Bauer, Rüdiger Berlich, Daniel Bischof, Michael Burghart, Roland Dyroff, Christian Egle, Karl Eichwalder, Stefan Fent, Werner Fink, Klaus Franken, Fritz Ganter, Jürgen Geck, Carsten Gro�, Rolf Strattner, Jörg Strebel, Steve Tomlin, Klaus G. Wagner, Thorsten Wandersmann, Udo Weber, Michael Weyrauch

  13. Metropolitan High-Technology Industry Growth in the Mid 1970s: Can Everyone Have a Slice of the High-Tech Pie

    E-Print Network [OSTI]

    Glasmeier, Amy; Hall, Peter; Markusen, Ann R.

    1984-01-01

    tion and Gro wth in High Technology Industries: A R egionalC . Burke , Thomas. 1 97 9 . High Technology En terprise in1 9 83c. De fining High Technology Industries. I nstitute of

  14. Simultaneous NuSTAR/Chandra observations of the Bursting Pulsar GRO J1744-28 during its third reactivation

    E-Print Network [OSTI]

    Younes, G; Grefenstette, B W; Tomsick, J A; Tennant, A; Finger, M H; Furst, F; Pottschmidt, K; Bhalerao, V; Boggs, S E; Boirin, L; Chakrabarty, D; Christensen, F E; Craig, W W; Degenaar, N; Fabian, A C; Gandhi, P; Gogus, E; Hailey, C J; Harrison, F A; Kennea, J A; Miller, J M; Stern, D; Zhang, W W

    2015-01-01

    We report on a 10 ks simultaneous Chandra/HETG-NuSTAR observation of the Bursting Pulsar, GRO J1744-28, during its third detected outburst since discovery and after nearly 18 years of quiescence. The source is detected up to 60 keV with an Eddington persistent flux level. Seven bursts, followed by dips, are seen with Chandra, three of which are also detected with NuSTAR. Timing analysis reveals a slight increase in the persistent emission pulsed fraction with energy (from 10% to 15%) up to 10 keV, above which it remains constant. The 0.5-70 keV spectra of the persistent and dip emission are the same within errors, and well described by a blackbody (BB), a power-law with an exponential rolloff, a 10 keV feature, and a 6.7 keV emission feature, all modified by neutral absorption. Assuming that the BB emission originates in an accretion disc, we estimate its inner (magnetospheric) radius to be about 4x10^7 cm, which translates to a surface dipole field B~9x10^10 G. The Chandra/HETG spectrum resolves the 6.7 keV ...

  15. Proceedings of the 19th Central Hardwood Forest Conference GTR-NRS-P-142 234 evALUATIoN oF ToTAL AboveGRoUND bIoMASS AND ToTAL

    E-Print Network [OSTI]

    TAL AboveGRoUND bIoMASS AND ToTAL MeRCHANTAbLe bIoMASS IN MISSoURI Michael e. Goerndt, David R. Larsen, and Charles D. keating1 Abstract.--In recent years, the state of Missouri has been converting to biomass, there is a need to identify accurate and precise methods of estimating whole tree biomass and merchantable biomass

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

    E-Print Network [OSTI]

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

  17. SOLAR CELLS FABRICATED WTH CuInS2 FILMS DEPOSITED USING SINGLE-SOURCE PRECURSORS Michael H. Jin1,3

    E-Print Network [OSTI]

    Scofield, John H.

    report a chalcopyrite thin film solar cell fabrication process established at NASA Glenn Research Center benefit of enabling roll-to-roll processing [3]. The first major thin film solar cell was the "CdS solar, however, remain below 15 % [8]. Several groups have attempted to fabricate thin film solar cells on metal

  18. A high efficiency even order frequency multiplier 

    E-Print Network [OSTI]

    Harris, Harold Floyd

    1956-01-01

    , of the st. andard doubler. The power out of the tank c' ". cuit in eac, "! case Q v)!~ e!d the po?er into t, he tank is 34 Hence, the effic'ency will be Ebb and Coj vill b. . constan; ti!rou. . hcut Lh. entir test. If ib, for a -, iven 2& i. ?djusted...

  19. Structure of water layers on hydrogen-covered Pt electrodes Tanglaw Roman and Axel Gro

    E-Print Network [OSTI]

    Ulm, Universität

    science [3]. In particular electronic structure calculations based on density functional the- ory (DFT calculations, molecular dynamics, hydrogen, water, platinum, low index single crystal surface I. INTRODUCTIONStructure of water layers on hydrogen-covered Pt electrodes Tanglaw Roman and Axel Groß Institute

  20. On the development of a GroEL based platform for identifying pharmacological chaperones

    E-Print Network [OSTI]

    Naik, Subhashchandra

    2013-05-31

    1 CHAPTER 1: ON THE NEED FOR A PLATFORM FOR IDENTIFYING PHARMACOLOGICAL CHAPERONES 1.1 Protein misfolding and proteostasis. 1.1.1 Protein folding and misfolding. a Protein folding and function. Proteins are crucial for all essential life... years. Some of the initial studies in the field of protein folding were performed by Linus Pauling and E.J. Corey, who first discovered that polypeptides form secondary structure elements such as alpha helices and beta sheets (1). Later, Christian...

  1. Chesapeake Solar LLC a groSolar company | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'SHeavy Electricals Ltd BHEL JumpCMNACelt Power LtdConcordConsolSolar

  2. GroSolar formerly Global Resource Options Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'SHeavy ElectricalsFTL SolarGate SolarGijeonWindNew Energy

  3. tti.tamu.edu > Variable message signs > Traffic actuated controllers > Traffic signals > Flashing traffic signals > Lane use control signals > Road markings > Rumble strips > Warrants (Traffic control devices) > Gro

    E-Print Network [OSTI]

    and development > Airport maintenance > Bicycle and pedestrian > Ports and waterways >>> Transportation operations > Statistics > Transportation engineering >>> Mathematics > Simulation > Statistical analysis > Backcalculation pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestrian

  4. Helmholtz International Fellow Award Preistrgerinnen und Preistrger 2014, 2. Auswahlrunde

    E-Print Network [OSTI]

    Stein, Oliver

    Professor at the Department of Materials Science & Metallurgy / University of Cambridge, GroÃ?britannien FZJ

  5. Atome und Spiralwellen Morgen ffentlicher Vortrag des Chemie-Nobelpreistrgers Gerhard Ertl an der Universitt Bayreuth

    E-Print Network [OSTI]

    Schmidt, Matthias

    - und Umweltprobleme." Also im Wortsinne weltbewegend. Ein gro- ßer Teil der aktuellen Umweltproble- me

  6. Special value formulae for Rankin L-functions August 12, 2003

    E-Print Network [OSTI]

    Vatsal, Vinayak

    Special value formulae for Rankin L-functions V. Vatsal August 12, 2003 1 Introduction Let F denote are largely drawn from the papers [Gro87], [Gro], [Wal85], [Zha01a]. However, the organization here is perhaps

  7. The Periplasmic Cavity of LacY Mutant Cys154 -> Gly: How Open Is Open?

    E-Print Network [OSTI]

    Jiang, X; Driessen, AJM; Feringa, BL; Kaback, HR

    2013-01-01

    GroEL-GroES- mediated protein folding. Chem. Rev. 106, 1917–of chaperone-mediated protein folding in the cytosol. Nat.that impair membrane protein folding and generate a membrane

  8. YidC protein, a molecular chaperone for LacY protein folding via the SecYEG protein machinery

    E-Print Network [OSTI]

    Zhu, L; Kaback, HR; Dalbey, RE

    2013-01-01

    GroEL-GroES- mediated protein folding. Chem. Rev. 106, 1917–of chaperone-mediated protein folding in the cytosol. Nat.that impair membrane protein folding and generate a membrane

  9. http://tti.tamu.edu > Variable message signs > Traffic actuated controllers > Traffic signals > Flashing traffic signals > Lane use control signals > Road markings > Rumble strips > Warrants (Traffic control devices) > Gro

    E-Print Network [OSTI]

    and development > Airport maintenance > Bicycle and pedestrian > Ports and waterways >>> Transportation operations pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestrian > Measures of effectiveness > Traffic models > Traffic simula Saving Lives, Time and Resources AviAtion Rese

  10. http://tti.tamu.edu > Variable message signs > Traffic actuated controllers > Traffic signals > Flashing traffic signals > Lane use control signals > Road markings > Rumble strips > Warrants (Traffic control devices) > Gro

    E-Print Network [OSTI]

    and development > Airport maintenance > Bicycle and pedestrian > Ports and waterways >>> Transportation operations > Aesthetics > Statistics > Transportation engineering >>> Mathematics > Simulation > Statistical analysis pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestrian

  11. A Previously Unrecorded Fragment of the Middle English Short Metrical Chronicle in Bibliotheca Philosophica Hermetica M199

    E-Print Network [OSTI]

    Grund, Peter

    2006-06-01

    letters have been retained, such as ye (=the), yt (=that), yer (=there), yeis (=these), yis (=this or these), you (=you), wth (=with), and once mr (=master). Other types of abbreviations have been expanded and the added letters have been supplied... salt gemme ymeynt wth him 20 salt comon, and salt niter bright yt brennith bothe daie and night. yt brennyth night and daie yt neuer quenchen it ne maye in iiij well springes ye twoo nere liggithe 25 also yeis philosophers Iseggythe. ye heate...

  12. Examination of eukaryotic chaperonin-mediated nascent chain folding in the cytosol: a photocrosslinking approach 

    E-Print Network [OSTI]

    Etchells, Stephanie Anne

    2004-11-15

    ??????????????????????????. 190 xii LIST OF FIGURES FIGURE Page 1 Crystal Structure of GroEL in Complex with Either GroES and ADP or ATP?????????????????.. 8 2 Models for GroEL/GroES Folding of Less Than 60 kDa Proteins and Greater Than 60 k... Chains??. 130 34 Nascent Chain Length Dependence of Photocrosslinking of the TRiC ? Subunit to Actin 50amb Nascent Chains??. 133 35 Photocrosslinking of the TRiC ? Subunit to Actin18-84amb 133mer and 177mer Nascent Chains...

  13. Moletular Strucl,urt and Life (Ed. b1' f. Klogoku and T. Nishimura), pp. 207 276, Japan Sci. Soc. Prrs, Toklo/CRC Prus, Boca Raton (1992)

    E-Print Network [OSTI]

    1992-01-01

    a t ATGACTCAT, althour permits strains to gro\\r DNA-binding exp binds more efficientlYtc protein. GCN4 binds

  14. A stoichiometric model of Escherichia coli 's macromolecular synthesis machinery and its integration with metabolism

    E-Print Network [OSTI]

    Thiele, Ines

    2009-01-01

    Protein Folding. . . . . . . . . . . . . . . . . . . . . . . . . . .of chaperonin-dependent protein folding in Escherichia coli.Chaperonin-mediated protein folding at the surface of groEL

  15. Rations for Fattening Cattle: Simple Directions for Fattening Cattle for Market in Texas. 

    E-Print Network [OSTI]

    Burns, John C.

    1915-01-01

    seed meal and silage some grain, such as kafir, milo maize or feterita for feeding, a much better bal- anced ration can be formed and one w.th which it is possible to obtain heavier gains and a bet- ter finish than with only cotton seed meal anl...

  16. Nuclear Instruments and Methods in Physics Research A 356 (1995) l-4 INSTRUMENTS

    E-Print Network [OSTI]

    Dutz, Hartmut

    1995-01-01

    ELSEVIER Nuclear Instruments and Methods in Physics Research A 356 (1995) l-4 NUCLEAR INSTRUMENTS 8 METHODS IN PHYSICS REgtR?n Thermodynamics of dynamic nuclear polarization W.Th. Wenckebach Faculty ofApplied Physics, Delfr Unicersity of Technology, P.O.B. 5046, 2600 GA De& The Netherlands Abstract Dynamic nuclear

  17. Slovak Centre of Biomass Use for Energy Wood Fired Heating Plant in Slovakia

    E-Print Network [OSTI]

    system of a small size enterprise. The project realisation started in 1999 with boiler installation Program for Co-operation in Central and Eastern Europe (PSO-programme). The boiler has a capacity of 605 kWth and is fired by clean wood residues from sawmills owned by the SFE. The biofuel-fired boiler replaced three old

  18. Matching Federal Government EnergyMatching Federal Government Energy Needs with Energy Efficient Fuel CellsNeeds with Energy Efficient Fuel Cells

    E-Print Network [OSTI]

    & APPLICATIONS · Prime Movers · 7x24 · CHP · Grid Connect and/or Grid Independent · Natural Gas · Propane at ISO conditions 40 +/- 2% · Available thermal energy 264 kWth · Fuel gas type Natural Gas · Fuel for Reliability · Increasing Need for Power Quality · Energy Security (Source Alternative) · Shift to Distributed

  19. Digestibility by Chickens of the Constituents of the Nitrogen-Free Extract of Feeds. 

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1931-01-01

    Engineering J. H. KNOX, M. S. Animal Husbandry A. K. MACKEY, M. S., A~imal Husbandry A. L. DARNELL, ~kf. A., Dairy Husbrrndry *Dean School of Veterinary Medicine. ?As of November 1, 1931. **In cooperation w~th U. S. Department of Agriculture...

  20. Analyses of Commercial Fertilizers Sold during 1954-55. 

    E-Print Network [OSTI]

    Fudge, J. F.

    1955-01-01

    -stuf Gro-Tex Gulf Heart Heart (of Texas Heller-GPO Hereford Hills Hi-Yield Hi-Vita Hoffman's Hoseco Hou-Actinite Humusite Hy-Gro Hyponex International Interstate IVY Itim~s I as great in 1954-55 as it was in 1945-46. \\I'hil~ the tonnage of fertilizers doubled during the 10 ' years, gen, a...

  1. Marshall HTC 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    and trade-ma registered with the State Chemist during 1946-47: vith the iror .A "" ~rks irks Acid Earth Fertilis Marshall Smith Gro-GretL, Aero Ferti-Lome Min-Coll Smith Gro-Grain AleXite Fidelity Min-Sol Smith Square Deal All Crop Ford...'s Bin Crop Heart Pabak Sulphur Earth Bull Dog Hu-Actinite Palestine Blue Star Swift's Rd. Stc Burbank Hy-Gro Pic-Nic T. C. C. C. C. I. Hyponex Plant-Chem Terra-Lite Cal-Nitro HY-Trous Purina Texas Longhorn Capitol International Quick-Mix Thorobred...

  2. Effect of Gaseous Impurities on Long-Term Thermal Cycling and Aging Properties of Complex Hydrides for Hydrogen Storage

    SciTech Connect (OSTI)

    Chandra, Dhanesh; Lamb, Joshua; Chien, Wen-Ming; Talekar, Anjali; and Pal, Narendra.

    2011-03-28

    This program was dedicated to understanding the effect of impurities on Long-Term Thermal Cycling and aging properties of Complex Hydrides for Hydrogen Storage. At the start of the program we found reversibility between Li2NH+LiH ? LiH+LiNH2 (yielding ~5.8 wt.%H capacity). Then we tested the effect of impurity in H2 gas by pressure cycling at 255oC; first with industrial gas containing ppm levels of O2 and H2O as major impurities. Both these impurities had a significant impact on the reversibility and decreased the capacity by 2.65 wt.%H. Further increase in number of cycles from 500 to 1100 showed only a 0.2 wt%H more weight loss, showing some capacity is still maintained after a significant number of cycles. The loss of capacity is attributed to the formation of ~55 wt% LiH and ~30% Li2O, as major contaminant phases, along with the hydride Li2NH phase; suggesting loss of nitrogen during cycling. The effect of 100 ppm H2O in H2 also showed a decrease of ~2.5 wt.%H (after 560 cycles), and 100ppm O2 in H2; a loss of ~4.1 wt.%. Methane impurity (100 ppm, 100cycles), showed a very small capacity loss of 0.9 wt.%H under similar conditions. However, when Li3N was pressure cycled with 100ppmN2-H2 there were beneficial effects were observed (255oC); the reversible capacity increased to 8.4wt.%H after 853 cycles. Furthermore, with 20 mol.%N2-H2 capacity increased to ~10 wt.%H after 516 cycles. We attribute this enhancement to the reaction of nitrogen with liquid lithium during cycling as the Gibbs free energy of formation of Li3N (?Go = -98.7 kJ/mol) is more negative than that of LiH (?Go = -50.3 kJ/mol). We propose that the mitigation of hydrogen capacity losses is due to the destabilization of the LiH phase that tends to accumulate during cycling. Also more Li2NH phase was found in the cycled product. Mixed Alanates (3LiNH2:Li3AlH6) showed that 7 wt% hydrogen desorbed under dynamic vacuum. Equilibrium experiments (maximum 12 bar H2) showed up to 4wt% hydrogen reversibly stored in the material after the first desorption. The activation energy was found to be 51 kJ/mol, as compared to 81 kJ/mol for pure lithium alanate. It is proposed that based on the data obtained and CALPHAD modeling that the improvement in cycling is due to the formation of pure lithium (liquid at 255oC), which is able to react with nitrogen specifically forming Li3N. The presence of nitrogen in the 80/20 molar mixtures in a hydride bed along with hydrogen causes Li to form Li3N rather than LiH, and subsequently regenerates the Li2NH phase and yields a ~10 wt.%H reversibly.

  3. Page 1 of 4 Friday, August 1, 2014 Optional Pre-Conference Tours

    E-Print Network [OSTI]

    Jawitz, James W.

    stacked (Verti-Gro® and Hydro-StackerTM) systems and the nutrient flow technique (NFT) hydroponic system by bus to visit two livestock operations with focus on small farm beef production and small ruminant

  4. Maschinelle Lernverfahren zur effizienten und interaktiven Auswertung groer Mengen von CAE-Modellvarianten

    E-Print Network [OSTI]

    Maschinelle Lernverfahren zur effizienten und interaktiven Auswertung groÃ?er Mengen von CAE-Modellvarianten CAE-Entwicklungsprozesse um ein vielfaches beschleunigen! Prof. Dr. J. Garcke, Fraunhofer Institut

  5. (Dept. of Urban & Regional Planning) WICCI Science Council

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Jim LaGro UW-Madison (Dept. of Urban & Regional Planning) WICCI Science Council October 28, 2011 Unlimited Wisconsin Citizen-Based Monitoring Network Wisconsin Environmental Initiative Wisconsin River

  6. Export is the default pathway for soluble unfolded polypeptides that accumulate during expression in Escherichia coli

    SciTech Connect (OSTI)

    Scotto-Lavino, E.; Freimuth, P.; Bai, M.; Zhang, Y.-B.

    2011-09-01

    Several E. coli endogenous, cytoplasmic proteins that are known clients of the chaperonin GroEL were overexpressed to examine the fate of accumulated unfolded polypeptides. Substantial fractions of about half of the proteins formed insoluble aggregates, consistent with the hypothesis that these proteins were produced at rates or in amounts that exceeded the protein-folding capacity of GroEL. In addition, large fractions of three overexpressed GroEL client proteins were localized in an extra-cytoplasmic, osmotically-sensitive compartment, suggesting they had initially accumulated in the cytoplasm as soluble unfolded polypeptides and thus were able to access a protein export pathway. Consistent with this model, an intrinsically unfoldable, hydrophilic, non-secretory polypeptide was quantitatively exported from the E. coli cytoplasm into an osmotically-sensitive compartment. Our results support the conclusion that a soluble, unfolded conformation alone may be sufficient to direct non-secretory polypeptides into a protein export pathway for signal peptide-independent translocation across the inner membrane, and that export rather than degradation by cytoplasmic proteases is the preferred fate for newly-synthesized, soluble, unfolded polypeptides that accumulate in the cytoplasm. The stable folded conformation of exported GroEL client proteins further suggests that the requirement for GroEL may be conditional on protein folding in the molecularly-crowded environment of the cytoplasm.

  7. Relation of the Potash Removed by Crops to the Active, Total, Acid-Soluble, and Acid-Insoluble Potash of the Soil. 

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1927-01-01

    ~on w~th the School of Agr~culture. SYNOPSIS The object of this Bulletin is to trace the relation between the analysis of the soil for potash in several forms, and the amounts of potash taken up by plants in pot experiments, for the purpose... of the pot tests than are any of the other forms of potash, though all have some relation both to the pot tests and to one another. The estimation of active potash is believed to give the best idea of the possible deficiency of the soil for potash...

  8. Structural discordance between neogene detachments and frontal sevier thrusts, central Mormon Mountains, southern Nevada

    E-Print Network [OSTI]

    Wernicke, Brian; Walker, J. Douglas; Beaufait, Mark S.

    1985-02-01

    , light ohve to dark gray, fine-to coarse-graned, laminated to thn-bedded, cherry wth columnar strornatolites near top _/ Unit 4- Dolomde, light o dark gray, fine-to ccx3rse-cjraned, lamnated to very thm-beddecL, 3nt strcmatolltes near base J... olomitic sltstone, grayish orange, fin tomedum-graned, laminated to tt'un-bedded -/ Dolomite, light ohve-gray, medium to coarse-grained, tt'un-bedded, local- ly sllty, oohhc, black bond at base Unit 3- Dolornlte, IJht to dark gray, fine to coome...

  9. Performance of sorghum [Sorghum bicolor (L.) Moench] hybrids and their parents across locations 

    E-Print Network [OSTI]

    Nunes, Maria Eugenia Santos

    1991-01-01

    was longitudinally sectioned and rated on a scale from 1 (hard endosperm) to 5 (soft endosperm), as reported by De Francisco er aL (1982), 3, Hardness index (H): TADD mill (Tangential Abrasive Dehulling Device), developed by IDRC (Reichert er al. , 1982), model 4E... = 100, 000 plants ha ') 47 Table 16. Means of endosperm texture (ET), weathering (WTH), grain density (D), endosperm recovery (ER), and pericarp thickness (PT) across locations in 1989 . . . . . 52 Table 17. Ranking by cultivar of endosperm texture (ET...

  10. Evans Library - 280 

    E-Print Network [OSTI]

    Unknown

    2006-06-01

    912 859" 149b-e 103 203 93 133" Percent reduction in yield-compared to untreated controls above qnge mean I- 1 Tositi~e v: ) indicate yield increase above untreated controls; all other values are Oj, loss. Interactions between herbicide r ireatme... on the effect of some phenoxy hvhicidrc , on cotton. Weeds. 7:341-348. 1 4. Smith, D. T. 1970. Texas blueweed control wth phens~. ' type herbicides, amitrole-T and tillage. Texas Agr. E!; Sta. Progress Report. 2848. I 5. Wiese, A. F. 1967. Perennial weed...

  11. Examination of the Entry to Burn and Burn Control for the ITER 15 MA Baseline and Other Scenarios

    SciTech Connect (OSTI)

    Kesse, Charles E.; Kim, S-H.; Koechl, F.

    2014-09-01

    The entry to burn and flattop burn control in ITER will be a critical need from the first DT experiments. Simulations are used to address time-dependent behavior under a range of possible conditions that include injected power level, impurity content (W, Ar, Be), density evolution, H-mode regimes, controlled parameter (Wth, Pnet, Pfusion), and actuator (Paux, fueling, fAr), with a range of transport models. A number of physics issues at the L-H transition require better understanding to project to ITER, however, simulations indicate viable control with sufficient auxiliary power (up to 73 MW), while lower powers become marginal (as low as 43 MW).

  12. Analysis of Commercial Fertilizers Sold during 1957-58. 

    E-Print Network [OSTI]

    Fudge, J. F.

    1958-01-01

    - West rganite Hu-Nite Sol Mission Mr. N. Mule Na-Churs Naturizer Nichols Nitra-Phos Nitro-Form N. 0. M. N-Rich-R Nu-Green Nurish Old Black Joe Old Dutch Mill Oleander Org U Phos Ortho Ortho-Gro Ozark Palo Duro Pasturgro P. D. Q.... Pelleform Phillips 66 Plainsman Plantabbs Plantation Plant-Gro Plantrons of the den 3W I n-- - --- Sul- Swf Swf Swf cT---4? Red Steer Reliance Reuter's Spe Robot Gardn R S. S. Ruhm's Scott's Sequestrene Shur-Crop Shur-Green Sod...

  13. The Manufacturing Enterprise and Sustainable Development -A Working Paper

    E-Print Network [OSTI]

    Gutowski, Timothy

    for Manufacturing and Productivity, MIT April 18, 2006 1. Introduction In 1987, the World Commission on Environment, increased concerns over global warming and oil consumption rates that outpace new resource findings may as the "Brundtland Report" after the commission's chairwoman, Gro Harlem Brundtland, identified critical global

  14. Operational Arome New Arome version in test Radar observation Report 2009

    E-Print Network [OSTI]

    Ribes, Aurélien

    , a new version of our Earth-System model has been prepared to guarantee our contributions to the upcoming 5th IPCC report. Consultations with IPSL have started to share a larger part of the Earth System modelling infrastructure. Re- search has largely contributed to the gro- wing offer of Météo

  15. Long-term ice sheetclimate interactions under anthropogenic greenhouse forcing simulated with a complex Earth System Model

    E-Print Network [OSTI]

    Winguth, Arne

    with a complex Earth System Model Miren Vizcai´no Æ Uwe Mikolajewicz Æ Matthias Gro¨ger Æ Ernst Maier-Reimer Æ-millennia simulations have been performed with a complex Earth System Model (ESM) for different anthropogenic climate climate change Á Meridional overturning circulation Á Earth system modelling Á Sea level 1 Introduction

  16. COLLEGE OF BUSINESS Close to the

    E-Print Network [OSTI]

    Norton Tyee ·Microsoft ·NuCo ·Oregon Coast Community College ·Oregon Freeze Dry ·Oregon Symphony Association of Salem ·Oregon Wave Energy Trust (OWET) ·OSU Federal Credit Union ·Reser's Fine Foods ·Sun Gro make large leaps in market share. Our new product line -- already a huge hit with our retailers

  17. Commercial Fertilizers in 1941-42. 

    E-Print Network [OSTI]

    Asbury, S. E. (Samuel E.); Ogier, T. L. (Thomas Louis); Fraps, G. S. (George Stronach)

    1942-01-01

    ........................ .... 4 Kelly-Weber & Company, Inc ................................. 4 Longview Cotton Oil Company ........................... 12 Marshall Cotton Oil Company ................................ 13 Mixson Brothers... ........................ 1 Ra-Pid-Gro Corporation ........................................... 1 Shreveport Fertilizer Works .............................. .. 64 Southwestern Peanut Growers Association ........ 16 Swift and Company Fertilizer Works .................. 176...

  18. Commercial Fertilizers in 1946-47. 

    E-Print Network [OSTI]

    Ogier, T. L. (Thomas Louis); Fudge, J. F. (Joseph Franklin)

    1947-01-01

    Milorganite Smith Money Maker All-Weather Four Leaf Mr. 0 Smith Nitro-F'hos Arcadian Fulton's Plantabbs N. J. Soiless-Hydroponics Armstrong's Prescription Goldenrod Nulife Soylaid Arrow Standard Green Acre Old Black Joe Star Best Bet Gro-Crop Owl Siauffer...

  19. Verifying a Virtual Component Interface-based PCI Bus Wrapper

    E-Print Network [OSTI]

    Verifying a Virtual Component Interface-based PCI Bus Wrapper with FormalCheck Annette Bunker properties of a VCI-compliant PCI 2.1 bus wrapper model in the formal verification tool, FormalCheck. Though a wrapper that takes VCI transactions as input and generate PCI 2.1 [Gro95] transactions as output, await

  20. Verifying a Virtual Component Interfacebased PCI Bus Wrapper

    E-Print Network [OSTI]

    Verifying a Virtual Component Interface­based PCI Bus Wrapper with FormalCheck Annette Bunker properties of a VCI­compliant PCI 2.1 bus wrapper model in the formal verification tool, FormalCheck. Though a wrapper that takes VCI transactions as input and generate PCI 2.1 [Gro95] transactions as output, await

  1. JOURNAL DE PHYSIQUE Colloque C6, supplment au n6, Tome h5, juin 198<) page C6-103

    E-Print Network [OSTI]

    Boyer, Edmond

    - perature has been used to compute the properties of hot, dense stellar matter in beta equilibrium of a gro- wing interest. Two are the main reasons for its study. Firstly, high energy heavy ion reactions are obtained by minimising the Free energy of the content of a sphe rical cell of radius Re, imposing charge

  2. La Liste Des Tantras Du rNying Ma'i Rgyud 'bum Selon L'edition Et Ablie Par Kun Mkhyen 'Jigs Med Gling Pa

    E-Print Network [OSTI]

    Achard, Jean-Luc

    2002-01-01

    savoir : 1. la version de Zur po che, 2. celle du fils de Nyang ral, mNga’ bdag ‘gro mgon dpal, 3. celle de Zur bznag po dpal, 4. celle de Ratna gling pa, 5. celle de Gong ra lo tsâ ba, 6. celle de gTer bdag gling pa, 7. celle du Ve Dalai Lama, 8. celle...

  3. Massive dissociation of gas hydrate during a Jurassic

    E-Print Network [OSTI]

    Hesselbo, Stephen P.

    the upper oceanic, biospheric and atmospheric carbon reservoirs, and that this occurred despite the enhanced hydrate during a Jurassic oceanic anoxic event Stephen P. Hesselbo*, Darren R. Gro¨cke*, Hugh C. Jenkyns*, Christian J. Bjerrum, Paul Farrimond, Helen S. Morgans Bell* & Owen R. Green* * Department of Earth Sciences

  4. Enhancement of Chaperone-Mediated Protein Folding Through Substrate Protein Interactions with the Groel C-Termini 

    E-Print Network [OSTI]

    Weaver, Jeremy Scott

    2015-04-28

    aggregation is the basis of many neurodegenerative diseases, including Alzheimer’s, Parkinson’s, and Creutzfeldt–Jakob disease [115,117-119]. 9 Although Alzheimer’s and cystic fibrosis are very different pathologically, both of these diseases, as well... Folding............................................................................... 1 Troubled Folding and Protein Folding Diseases ................................................. 6 GroEL: the Essential Folding Machine...

  5. My Level of Please comp

    E-Print Network [OSTI]

    Pfeifer, Holger

    a 973150 22 0 1 te orientation p .uniulm.de/io/ tation W Sep I want to s Pla Cla I want to si Pla Cla I want to si Intercultura City Tour (G Library Tou Movie I: " Movie III: I asses & Exam gn up for the acement Test asses & Exam gn up only fo al Training (Gro Group B) ur

  6. HORTICULTURAL ENTOMOLOGY Tactics for Management of Thrips (Thysanoptera: Thripidae) and

    E-Print Network [OSTI]

    Pappu, Hanu R.

    the use of reßective plastic mulch (Greenough et al. 1990, Stavisky et al. 2002, Reitz et al. 2003), host Springs, FL) and the metallic reßective plastic mulch RepelGro (ReßecTec Foils Inc., Lake Zurich, IL). We,andsilverormetallicreßectivemulch.Averagedoveralltests,theTSWV-resistanttomatoÔBHN444 on silver mulch treatment had the largest effect in terms of reducing thrips and spotted wilt

  7. Observations of Accreting Pulsars

    E-Print Network [OSTI]

    Lars Bildsten; Deepto Chakrabarty; John Chiu; Mark H. Finger; Danny T. Koh; Robert W. Nelson; Thomas A. Prince; Bradley C. Rubin; D. Matthew Scott; Mark Stollberg; Brian A. Vaughan; Colleen A. Wilson; Robert B. Wilson

    1997-07-22

    We summarize five years of continuous monitoring of accretion-powered pulsars with the Burst and Transient Source Experiment (BATSE) on the Compton Gamma Ray Observatory. Our 20-70 keV observations have determined or refined the orbital parameters of 13 binaries, discovered 5 new transient accreting pulsars, measured the pulsed flux history during outbursts of 12 transients (GRO J1744-28, 4U 0115+634, GRO J1750-27, GS 0834-430, 2S 1417-624, GRO J1948+32, EXO 2030+375, GRO J1008-57, A 0535+26, GRO J2058+42, 4U 1145-619 and A 1118-616), and also measured the accretion torque history of during outbursts of 6 of those transients whose orbital parameters were also known. We have also continuously measured the pulsed flux and spin frequency for eight persistently accreting pulsars (Her X-1, Cen X-3, Vela X-1, OAO 1657-415, GX 301-2, 4U 1626-67, 4U 1538-52, and GX 1+4). Because of their continuity and uniformity over a long baseline, BATSE observations have provided new insights into the long-term behavior of accreting magnetic stars. We have found that all accreting pulsars show stochastic variations in their spin frequencies and luminosities, including those displaying secular spin-up or spin-down on long time scales, blurring the conventional distinction between disk-fed and wind-fed binaries. Pulsed flux and accretion torque are strongly correlated in outbursts of transient accreting pulsars, but uncorrelated, or even anticorrelated, in persistent sources.

  8. A Characterization of the Convexity of Cyclic Polygons in Terms of the Central Angles

    E-Print Network [OSTI]

    Iosif Pinelis

    2006-09-25

    Let P be a cyclic n-gon with n\\ge3, the central angles \\th_0,...,\\th_{n-1} in (-\\pi,\\pi], and the winding number w:=(\\th_0+...+\\th_{n-1})/(2\\pi). The vertices of P are assumed to be all distinct from one another. It is then proved that P is convex if and only if one of the following four conditions holds: (I) w=1 and \\th_0,...,\\th_{n-1}>0; (II) w=-1 and \\th_0,...,\\th_{n-1}<0; (III) w=0 and exactly one of the angles \\th_0,...,\\th_{n-1} is negative; (IV) w=0 and exactly one of the angles \\th_0,...,\\th_{n-1} is positive.

  9. Regmi Research Series ,Year 8, December 1, 1976

    E-Print Network [OSTI]

    Regmi, Mahesh C

    1976-01-01

    ~~l ·'Per '-};7~ons who have been oranted authority through a formal charter iltf'1e. oov~rnmer.t. tu. ~xAr.c" ~;e judicial. aut!"1ority, Jagirdars , ' SCr.~o'mer s , an'l Amal~s snall comply w~th thE': proce:lures pre_ I.Of l. ~ by layl 2.r formal... disputes , or collect f:.nes and other pcnal ­ t'es~~ by appo i nting clerks and other emplO'ye~s ~t his own private ''''.ith::J enCe. ::;7 :n<2:( , however , ,hear an~ dispose

  10. The development of a model system to monitor induction of an enzyme in Saccharomyces cerevisiae 

    E-Print Network [OSTI]

    Wilkerson, James Edward

    1979-01-01

    in 5 mls of 100 mM Iris-HC1 pH 8. 0 with 5 mM DTT and 10 mM KH PO and incubated at 30'C with 2 4 shaking for 15 minutes. Cells were washed once with 30 mls 10 mM KP pH 7. 5 and once with 3. 1! (w/v) KCI, 10 mM KP . at pH 7. 5 w'th 2 mg of Zymolase... of 50 KeV. Sections were stained with 0. 1/ Toludine Blue in 1X sodium borate for observation with light microscopy. Chemicals The three substrates, sodium a-napthyl phosphate, p-nitrophenol phosphate and 4-methylumbelliferyl phosphate and the DNase...

  11. Galactic Superluminal Sources

    E-Print Network [OSTI]

    B. A. Harmon

    1998-12-21

    A new class of X-ray sources was clearly established with the discovery of highly relativistic radio jets from the galactic sources GRS 1915+105 and GRO J1655-40. Both of these objects have given us a broader view of black holes and the formation of jets, yet they also show the complexity of the accretion environment near relativistic objects. The fast apparent motion of the jets, their luminosity and variability, their high energy spectrum, and approximate scaling to the behavior of active galactic nuclei, certainly warrant the description "microquasar". I present a review of the observational data on these sources, and discuss where we stand on a physical picture of GRS 1915+105 and GRO J1655-40 as taken from multi-wavelength studies. I also point out other galactic sources which share some of the properties of the microquasars, and what to look for as a high energy "signature" in future observations.

  12. Aggre gation ofth e ligh tm ode l In th e sim ulation runs th e canopy ve rsion ofLIGNUM is use d.LIGNUM -canopy sim ulate s a juve nile

    E-Print Network [OSTI]

    Kurth, Winfried

    by a gap, using a de taile d radiation m ode l.GRO GRA use s a h e m isph e ricalcove ring ratio be tw e e re ph i is th e inclination angle of th e incom ing radiation (W CR). Re sults Th e aggre gation .Sch m idt.BW INPro Program m zur Bestandesanalyse und Prognose.H andbuch zur Ve rsion 5.1.Nie de rsäch

  13. Do X-ray Binary Spectral State Transition Luminosities Vary?

    E-Print Network [OSTI]

    Thomas J. Maccarone

    2003-08-02

    We tabulate the luminosities of the soft-to-hard state transitions of all X-ray binaries for which there exist good X-ray flux measurements at the time of the transition, good distance estimates, and good mass estimates for the compact star. We show that the state transition luminosities are at about 1-4% of the Eddington rate, markedly smaller than those typically quoted in the literature, with a mean value of 2%. Only the black hole candidate GRO J~1655-40 and the neutron star systems Aql X-1 and 4U 1728-34 have measured state transition luminosities inconsistent with this value at the 1$\\sigma$ level. GRO J~1655-40, in particular, shows a state transition luminosity below the mean value for the other sources at the $4\\sigma$ level. This result, combined with the known inner disk inclination angle (the disk is nearly parallel to the line of sight) from GRO J~1655-40's relativistic jets suggest that the hard X-ray emitting region in GRO J~1655-40 can have a velocity of no more than about $\\beta=0.68$, with a most likely value of about $\\beta=0.52$, and a minimum speed of $\\beta=0.45$, assuming that the variations in state transition luminosities are solely due to relativistic beaming effects. The variance in the state transition luminosities suggests an emission region with a velocity of $\\sim0.2c$. The results are discussed in terms of different emission models for the low/hard state. We also discuss the implications for measuring the dimensionless viscosity parameter $\\alpha$. We also find that if its state transitions occur at typical luminosities, then GX 339-4 is likely to be at a distance of at least 7.6 kpc, much further than typically quoted estimates.

  14. Evaluation of the Dairy/Yeast Prebiotic, Grobiotic-A, in the Diet of Juvenile Nile Tilapia, Oreochromis niloticus 

    E-Print Network [OSTI]

    Peredo, Anjelica

    2012-02-14

    -being and health (Gibson et al. 2004). Commonly used prebiotics that have been evaluated in various aquatic species include inulin, mannanoligosaccharides (MOS), fructooligosaccharides (FOS), short- chain fructooligosaccharides (scFOS), GroBiotic?-A (GBA... Species Initial Wt. (g) Responsea Reference Inulin 150; 4 weeks Arctic charr (Salvelinus alpines L.) 218 Intestinal cell damage Wang & Wang (1997) 75; 3 weeks Atlantic salmon (Salmo salar L.) 218 ? Intestinal cell damage; ? Intestinal growth...

  15. Relativity at Action or Gamma-Ray Bursts

    E-Print Network [OSTI]

    Tsvi Piran

    1996-07-08

    Gamma ray Bursts (GRBs) - short bursts of few hundred keV $\\gamma$-rays - have fascinated astronomers since their accidental discovery in the sixties. GRBs were ignored by most relativists who did not expect that they are associated with any relativistic phenomenon. The recent observations of the BATSE detector on the Compton GRO satellite have revolutionized our ideas on these bursts and the picture that emerges shows that GRBs are the most relativistic objects discovered so far.

  16. Supplement 21, Part 7, Parasite-Subject Catalogue, Hosts 

    E-Print Network [OSTI]

    Zidar, Judith A; Shaw, Judith H.; Hanfman, Deborah T.; Kirby, Margie D.; Rayburn, Jane D.; Edwards, Shirley J.; Hood, Martha W.

    1978-01-01

    Sicherheitsdienst SGvD Symboliches Gro?loge von Deutschland SPD Sozialdemokratische Partei Deutschlands SS Schutzstaffeln IOBB Independent Order of B?nai B?rith USHMM United States Holocaust Memorial Museum VB V?lkisher Beobachter vii..., 1962), which gave a history of Freemasonry in Germany from its founding until 1958, but devoted just a single page of its 300 pages to the Third Reich. Two years later, Manfred Steffens, also a Mason, published Freimaurer in Deutschland; Bilanz eines...

  17. Observation of solar high energy gamma and X-ray emission and solar energetic particles

    E-Print Network [OSTI]

    Struminsky, Alexei

    2015-01-01

    We considered 18 solar flares observed between June 2010 and July 2012, in which high energy >100 MeV {\\gamma}-emission was registered by the Large Area Telescope (LAT) aboard FermiGRO. We examined for these {\\gamma}-events soft X-ray observations by GOES, hard X-ray observations by the Anti-Coincidence Shield of the SPectrometer aboard INTEGRAL (ACS SPI) and the Gamma-Ray burst Monitor (GBM) aboard FermiGRO. Hard X-ray and {\\pi}0-decay {\\gamma}-ray emissions are used as tracers of electron and proton acceleration, respectively. Bursts of hard X-ray were observed by ACS SPI during impulsive phase of 13 events. Bursts of hard X-ray >100 keV were not found during time intervals, when prolonged hard {\\gamma}-emission was registered by LAT/FermiGRO. Those events showing prolonged high-energy gamma-ray emission not accompanied by >100 keV hard X-ray emission are interpreted as an indication of either different acceleration processes for protons and electrons or as the presence of a proton population accelerated du...

  18. Growing and Storing Sweet Potatoes. 

    E-Print Network [OSTI]

    Potts, A. T.; Olsen, J. C.

    1916-01-01

    College o/Texas (in cooperation with the United States Department of Agriculture) AUGUST, 1916 EXTENSION SERVICE No. B. 27 Gro"lVing and Storing S"lVeet Potatoes Address CLARENCE OUSLEY Director and State Agent, College Station, Texas Growing alld Storing... of mixed potatoes seldom bring satisfactory prices. Each community should try to confine their planting to one, or, at the most, two varieties. If more than one variety is grown they mU:st be harvested, stored and marketed separately. The varieties to grow...

  19. Texas Crop Profile: Peppers 

    E-Print Network [OSTI]

    Hall, Kent D.; Holloway, Rodney L.

    2001-02-13

    -head sorghum can get 10 to 12 feet high. Onion yields have been shown to increase by 50 percent to 100 percent with windbreaks. Currently, only about 10 percent to 25 percent of growers use windbreaks. Planting: Statewide, 80 to 90 percent of the peppers... and liniments. Peppers also play a part in rituals, magic and folklore. Gulamic acid (AuxiGro ? ) is a newly registered agrochemical that acts as a plant growth regula- tor. It enhances crop growth and yield. It is registered on bell peppers and other vegetables...

  20. Commercial Feeding Stuffs : September 1, 1920, to August 31, 1921. 

    E-Print Network [OSTI]

    Youngblood, B. (Bonney)

    1921-01-01

    in Charge groAomist Svrra E: B.' REYNOLAS, M:'s.. ~~ronom'ist, Small I Grains E. y. GEYER, B. S., Agronomist. Farm Super...~or H. V. GEIB, B. S., Soil Survegor FEED CONTROL SERVICE B. YOUNGBLOOD, Ph. D., Director F. D. FULLER, M. S., Chief Inspector SUBSTATIONS No. 1. Beeville, Bee County No. 8. Lubbock, Lubbock County I. E. COWART, M. S., Superintendent R. E. KARPER...

  1. Richard Coke Building 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    ir.on and steel sector. GroBs Energy Consumption Fuel Type (10 12 Btu/yr) Coal 1,824.9 Tar and Pitch 5.4 Coke 177 .9 Coke Oven Gas 3.6 Natural Gas 659.2 Middle Disti.llate Fuels 13.5 Residual Fuel Oil 206.5 Liquid Petroleum Cas 1... sector fol owed by aluminum and copper. 4.1.1 Iron and Steel Table 3 shows energy use in the steel sector to be about 3.4 quad with over 50% accounted for by coal. Major energy consuming proc ss steps include coke ovens, bl st furnaces...

  2. Grocery 2009 TSD Chicago 50% Energy Savings | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to:ResourcesGriggs County, NorthGroSolar Jump

  3. Grocery 2009 TSD Chicago Baseline | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to:ResourcesGriggs County, NorthGroSolar

  4. Grocery 2009 TSD Miami 50% Energy Savings | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to:ResourcesGriggs County, NorthGroSolar50% Energy

  5. Grocery 2009 TSD Miami Baseline | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to:ResourcesGriggs County, NorthGroSolar50%

  6. Grocery Store 50% Energy Savings Technical Support Document 2009 | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar Jump to:ResourcesGriggs County, NorthGroSolar50%Energy

  7. Final Technical Report

    SciTech Connect (OSTI)

    Stettenheim, Joel; McBride, Troy O.; Brambles, Oliver J.; Cashin, Emil A.

    2013-12-31

    This report summarizes the successful results of our SunShot project, Advanced Low-Cost Receivers for Parabolic Troughs. With a limited budget of $252K and in only 12 months, we have (1) developed validated optical and thermal models and completed rigorous optimization analysis to identify key performance characteristics as part of developing first-generation laboratory prototype designs, (2) built optical and thermal laboratory prototypes and test systems with associated innovative testing protocols, and (3) performed extensive statistically relevant testing. We have produced fully functioning optical and thermal prototypes and accurate, validated models shown to capture important underlying physical mechanisms. The test results from the first-generation prototype establish performance exceeding the FOA requirement of thermal efficiency >90% for a CSP receiver while delivering an exit fluid temperature of > 650 °C and a cost < $150/kWth. Our vacuum-free SunTrap receiver design provides improvements over conventional vacuum-tube collectors, allowing dramatic reductions in thermal losses at high operating temperature.

  8. UFO (UnFold Operator) default data format

    SciTech Connect (OSTI)

    Kissel, L.; Biggs, F. ); Marking, T.R. )

    1991-05-01

    The default format for the storage of x,y data for use with the UFO code is described. The format assumes that the data stored in a file is a matrix of values; two columns of this matrix are selected to define a function of the form y = f(x). This format is specifically designed to allow for easy importation of data obtained from other sources, or easy entry of data using a text editor, with a minimum of reformatting. This format is flexible and extensible through the use of inline directives stored in the optional header of the file. A special extension of the format implements encoded data which significantly reduces the storage required as compared wth the unencoded form. UFO supports several extensions to the file specification that implement execute-time operations, such as, transformation of the x and/or y values, selection of specific columns of the matrix for association with the x and y values, input of data directly from other formats (e.g., DAMP and PFF), and a simple type of library-structured file format. Several examples of the use of the format are given.

  9. Helicobacter pylori-derived Heat shock protein 60 enhances angiogenesis via a CXCR2-mediated signaling pathway

    SciTech Connect (OSTI)

    Lin, Chen-Si [Department of Biological Science and Technology, National Chiao-Tung University, Hsin-Chu, Taiwan (China) [Department of Biological Science and Technology, National Chiao-Tung University, Hsin-Chu, Taiwan (China); School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan (China); He, Pei-Juin; Hsu, Wei-Tung [Department of Biological Science and Technology, National Chiao-Tung University, Hsin-Chu, Taiwan (China)] [Department of Biological Science and Technology, National Chiao-Tung University, Hsin-Chu, Taiwan (China); Wu, Ming-Shiang [Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan (China)] [Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan (China); Wu, Chang-Jer [Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan (China)] [Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan (China); Shen, Hsiao-Wei [Institute of Molecular Medicine and Bioengineering, National Chiao-Tung University, Hsin-Chu, Taiwan (China)] [Institute of Molecular Medicine and Bioengineering, National Chiao-Tung University, Hsin-Chu, Taiwan (China); Hwang, Chia-Hsiang [Yung-Shin Pharmaceutical Industry Co., Ltd., Tachia, Taichung, Taiwan (China)] [Yung-Shin Pharmaceutical Industry Co., Ltd., Tachia, Taichung, Taiwan (China); Lai, Yiu-Kay [Department of Life Science, Institute of Biotechnology, National Tsing Hua University, Hsin-Chu, Taiwan (China)] [Department of Life Science, Institute of Biotechnology, National Tsing Hua University, Hsin-Chu, Taiwan (China); Tsai, Nu-Man [School of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung, Taiwan (China)] [School of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung, Taiwan (China); Liao, Kuang-Wen, E-mail: kitchhen@yahoo.com.tw [Institute of Molecular Medicine and Bioengineering, National Chiao-Tung University, Hsin-Chu, Taiwan (China)] [Institute of Molecular Medicine and Bioengineering, National Chiao-Tung University, Hsin-Chu, Taiwan (China)

    2010-06-25

    Helicobacter pylori is a potent carcinogen associated with gastric cancer malignancy. Recently, H. pylori Heat shock protein 60 (HpHSP60) has been reported to promote cancer development by inducing chronic inflammation and promoting tumor cell migration. This study demonstrates a role for HpHSP60 in angiogenesis, a necessary precursor to tumor growth. We showed that HpHSP60 enhanced cell migration and tube formation, but not cell proliferation, in human umbilical vein endothelial cells (HUVECs). HpHSP60 also indirectly promoted HUVEC proliferation when HUVECs were co-cultured with supernatants collected from HpHSP60-treated AGS or THP-1 cells. The angiogenic array showed that HpHSP60 dramatically induced THP-1 cells and HUVECs to produce the chemotactic factors IL-8 and GRO. Inhibition of CXCR2, the receptor for IL-8 and GRO, or downstream PLC{beta}2/Ca2+-mediated signaling, significantly abolished HpHSP60-induced tube formation. In contrast, suppression of MAP K or PI3 K signaling did not affect HpHSP60-mediated tubulogenesis. These data suggest that HpHSP60 enhances angiogenesis via CXCR2/PLC{beta}2/Ca2+ signal transduction in endothelial cells.

  10. Proposed Design and Operation of a Heat Pipe Reactor using the Sandia National Laboratories Annular Core Test Facility and Existing UZrH Fuel Pins

    SciTech Connect (OSTI)

    Wright, Steven A.; Lipinski, Ronald J.; Pandya, Tara; Peters, Curtis [Sandia National Laboratories, Org 6872 MS-1146, PO Box 5800 Albuquerque, New Mexico 87185 (United States)

    2005-02-06

    Heat Pipe Reactors (HPR) for space power conversion systems offer a number of advantages not easily provided by other systems. They require no pumping, their design easily deals with freezing and thawing of the liquid metal, and they can provide substantial levels of redundancy. Nevertheless, no reactor has ever been operated and cooled with heat pipes, and the startup and other operational characteristics of these systems remain largely unknown. Signification deviations from normal reactor heat removal mechanisms exist, because the heat pipes have fundamental heat removal limits due to sonic flow issues at low temperatures. This paper proposes an early prototypic test of a Heat Pipe Reactor (using existing 20% enriched nuclear fuel pins) to determine the operational characteristics of the HPR. The proposed design is similar in design to the HOMER and SAFE-300 HPR designs (Elliot, Lipinski, and Poston, 2003; Houts, et. al, 2003). However, this reactor uses existing UZrH fuel pins that are coupled to potassium heat pipes modules. The prototype reactor would be located in the Sandia Annular Core Research Reactor Facility where the fuel pins currently reside. The proposed reactor would use the heat pipes to transport the heat from the UZrH fuel pins to a water pool above the core, and the heat transport to the water pool would be controlled by adjusting the pressure and gas type within a small annulus around each heat pipe. The reactor would operate as a self-critical assembly at power levels up to 200 kWth. Because the nuclear heated HPR test uses existing fuel and because it would be performed in an existing facility with the appropriate safety authorization basis, the test could be performed rapidly and inexpensively. This approach makes it possible to validate the operation of a HPR and also measure the feedback mechanisms for a typical HPR design. A test of this nature would be the world's first operating Heat Pipe Reactor. This reactor is therefore called 'HPR-1'.

  11. Survival probability and energy modification of hydrogen Energetic Neutral Atoms on their way from the termination shock to Earth orbit

    E-Print Network [OSTI]

    M. Bzowski

    2008-06-14

    Context: With the forthcoming launch of a NASA SMEX mission IBEX devoted to imaging of heliospheric interface by in-situ detection of Energetic Neutral Atoms (ENA) an important issue becomes recognizing of transport of these atoms from the termination shock of the solar wind to Earth orbit. Aims: Investigate modifications of energy and of survival probability of the H ENA detectable by IBEX (0.01 -- 6 keV) between the termination shock and Earth orbit taking into account the influence of the variable and anisotropic solar wind and solar EUV radiation. Methods: Energy change of the atoms is calculated by numerical simulations of orbits of the H ENA atoms from ~100 AU from the Sun down to Earth orbit, taking into account solar gravity and Lyman-$\\alpha$ radiation pressure, which is variable in time and depends on radial velocity of the atom. To calculate survival probabilities of the atoms against onization, a detailed 3D and time-dependent model of H ENA ionization based on observations of the solar wind and EUV ionizing radiation is constructed, and wth the use of this model probabilities of survival of the atoms are calculated by numerical integration along the previously calculated orbits. Results: Owing to the radiation pressure, H ENA reach the Earth orbit practically without energy and direction change except the atoms with energy lower than 0.1 keV during high solar activity. For a given energy at Earth orbit one expects fluctuations of survival probability from ~20% at 0.01 keV down to just a few percent at 6 keV and a modulation of survival probability as a function of the location at Earth orbit, ecliptic latitude of the arrival direction, and the phase of solar cycle with an amplitude of a few dozen percent for 0.1 keV atoms at solar minimum to a few percent for 6 keV atoms at solar maximum.

  12. Health and environmental effects document for direct coal liquefaction - 1981.

    SciTech Connect (OSTI)

    Mellinger, P.J.; Wilson, B.W.; Mahlum, D.D.; Sever, L.E.; Olsen, A.R.

    1982-09-01

    This document presents initial estimates of potential human health effects from inhalation of nonmethane hydrocarbons (NMHC) that may be released from a future hypothetical industry producing about 600,000 bb1/day of synthetic fuel by direct liquefaction of coal. The assessment approach starts wth general assumptions that are then refined in a tiered sequence that considers available epidemiological, environmental and chemical data. The uncertainties involved in such an evaluation have been quantified where possible at this early stage of health risk analysis. Many surrogate data bases were considered for application to coal liquefaction including coke oven, British gas retort, roofing tar and asphalts, and cigarette smoke. The coke oven data base was selected for this assessment because the chemical and physical nature of coke oven emissions are judged to more closely approximate potential coal liquefaction emissions. Utilizing the extensive epidemiological data base for coke oven workers as a surrogate model, health effects from release of coal liquefaction NMHC may be quantified. This method results in estimates of about 1 x 10/sup -3/ excess cancer deaths/yr to an industrial work force of 7800 persons and 5 x 10/sup -2/ excess cancer deaths/yr in the U.S. population as a whole from NMHC that boil above 600/sup 0/F. Sources of uncertainty in the estimates are listed. Using these uncertainties, it is estimated that from 2 x 10/sup -4/ to 5 x 10/sup -3/ lung cancer deaths/yr may occur in the industrial work force and from 1 x 10/sup -2/ to 2.5 x 10/sup -1/ lung cancer deaths/yr in the U.S. population as a whole. On an individual basis, the excess lifetime risk to occupationally exposed workers is estimated to be 500 times greater than to members of the U.S. public.

  13. Quasi-harmonic oscillatory motion of charged particles around a Schwarzschild black hole immersed in an uniform magnetic field

    E-Print Network [OSTI]

    Martin Kološ; Zden?k Stuchlík; Arman Tursunov

    2015-06-22

    In order to test the role of large-scale magnetic fields in quasiperiodic oscillation phenomena observed in microquasars, we study oscillatory motion of charged particles in vicinity of a Schwarzschild black hole immersed into an external asymptotically uniform magnetic field. We determine the fundamental frequencies of small harmonic oscillations of charged test particles around stable circular orbits in the equatorial plane of a magnetized black hole, and discuss the radial profiles of frequencies of the radial and latitudinal harmonic oscillations in dependence on the mass of the black hole and the strength of the magnetic field. We demonstrate that assuming relevance of resonant phenomena of the radial and latitudinal oscillations of charged particles at their frequency ratio $3:2$, the oscillatory frequencies of charged particles can be well related to the frequencies of the twin high-frequency quasi-periodic oscillations observed in the microquasars GRS 1915+105, XTE 1550-564 and GRO 1655-40.

  14. Quasi-harmonic oscillatory motion of charged particles around a Schwarzschild black hole immersed in an uniform magnetic field

    E-Print Network [OSTI]

    Kološ, Martin; Tursunov, Arman

    2015-01-01

    In order to test the role of large-scale magnetic fields in quasiperiodic oscillation phenomena observed in microquasars, we study oscillatory motion of charged particles in vicinity of a Schwarzschild black hole immersed into an external asymptotically uniform magnetic field. We determine the fundamental frequencies of small harmonic oscillations of charged test particles around stable circular orbits in the equatorial plane of a magnetized black hole, and discuss the radial profiles of frequencies of the radial and latitudinal harmonic oscillations in dependence on the mass of the black hole and the strength of the magnetic field. We demonstrate that assuming relevance of resonant phenomena of the radial and latitudinal oscillations of charged particles at their frequency ratio $3:2$, the oscillatory frequencies of charged particles can be well related to the frequencies of the twin high-frequency quasi-periodic oscillations observed in the microquasars GRS 1915+105, XTE 1550-564 and GRO 1655-40.

  15. Impact of Electric Current Fluctuations Arising from Power Supplies on Charged-Particle Beams

    E-Print Network [OSTI]

    Yoon, P S

    2008-01-01

    Electric current fluctuations are one type of unavoidable machine imperfections,and induce magnetic-field perturbations as a source of instabilities in accelerators. This paper presents measurement-based methodology of modeling the fluctuating electric current arising from the power system of Fermilab's Booster synchrotron to discuss the ramifications of the presence of ripple current and space-charge defocusing effects. We also present the method of generating stochastic noise and the measurement and analysis methods of ripple current and offending electromagnetic interferences residing in the Booster power system. This stochastic noise model, accompanied by a suite of beam diagnostic calculations, manifests that the fluctuating power-supply current, when coupled to space charge and impinging upon a beam, can substantially enhance beam degradation phenomena--such as emittance growth and halo formation--during the Booster injection period. With idealized and uniform charge-density distribution, fractional gro...

  16. Intercorrelations of certain variables of the Lee-Thorpe Occupational Interest Inventory with certain variables measured by the How Well Do You Know Your Interests inventory 

    E-Print Network [OSTI]

    Thompson, Stephen Michael

    1970-01-01

    CQ IPTmRCQR'b'', , ATIQjl$ QP C R 'j)IN I'AR Lj il', I'P~ QR T', C I K', -". ". ICOSI Z GCC UPA IONAT. INTA'~ 4'HT INVI. 'is'TCR Y ITl Ci"''RTA IN 7j RIALD 3 11ZAE JRED 751 Thi' llQM 'r&'LD DO YG~J ~'Q&J YOUR I'?;TERFCI'S IIuViNTORY A Thesis... u si orj 2j' gl III &iFTPOD Sample . ~ GroIIP s Treat. :lent of Data $4 $6 IV. o4SUITS AND DISCUSSION HIP)LIOGP~I-'iP'. VITA. 57 60 LIST OF TABIEH Kaf e in ens Stand "i"d Dev atj on. and RenHe oz Subtests for Each Group: Jerikins...

  17. On the Misalignment of Jets in Microquasars

    E-Print Network [OSTI]

    Thomas J. Maccarone

    2002-09-05

    We discuss the timescales for alignment of black hole and accretion disc spins in the context of binary systems. We show that for black holes that are formed with substantial angular momentum, the alignment timescales are likely to be at least a substantial fraction of the systems' lifetimes. This result explains the observed misalignment of the disc and the jet in the microquasar GRO J 1655-40 and in SAX J 1819-2525 as being likely due to the Bardeen-Petterson effect. We discuss the implications of these results on the mass estimate for GRS 1915+105, which has assumed the jet is perpendicular to the orbital plane of the system and may hence be an underestimate. We show that the timescales for the spin alignment in Cygnus X-3 are consistent with the likely misalignment of disc and jet in that system, and that this is suggested by the observational data.

  18. The World of Dark Shadows Issue 8 

    E-Print Network [OSTI]

    Multiple Contributors

    1976-01-01

    U I Woo Jot AloDI. lloQ6S wit! "0. taoa 00811 tbl ton olub., tbo.o .trictl, orionta4 to DO and ~~ ~ovotud to • pD~icul.r ootor. In .Ug.or ot '15, attc.r I bod r..~l.- 1 !'boto ooun.6q ot Boott tu­ lor, ~o 4U th.. pboto­ gro~ ' vork t"r thi, i.8l... ooouple Qt ocabura broU6bt it t" rI1 attumtioO. Rigl .• ow tbo~'a tbe pc..aib111tI that ln tbo tuturo 1'11 bu bmvin~ a~~ ~,t t!le nrt prinh,s thot vn1· - . ,Y~I, I'•• b3d hoellaa. But 1· ...8 olao b3d tun, nnd I hopo ~ou b:v ': cc. : . ' . Onward to tbo...

  19. Interim Results from Alternative Fuel Truck Evaluation Project

    SciTech Connect (OSTI)

    Kevin L. Chandler; Paul Norton; Nigel Clark

    1999-05-03

    The objective of this project, which is supported by the U.S. Department of Energy (DOE) through the National Renewable Energy Laboratory (NREL), is to provide a comprehensive comparison of heavy-duty trucks operating on alternative fuels and diesel fuel. Data collection from up to eight sites is planned. Currently, the project has four sites: Raley's in Sacramento, CA (Kenworth, Cummins LlO-300G, liquefied natural gas - LNG); Pima Gro Systems, Inc. in Fontana, CA (White/GMC, Caterpillar 31768 Dual-Fuel, compressed natural gas - CNG); Waste Management in Washington, PA (Mack, Mack E7G, LNG); and United Parcel Service in Hartford, CT (Freightliner Custom Chassis, Cummins B5.9G, CNG). This paper summarizes current data collection and evaluation results from this project.

  20. Structure of Glycerol Dehydratase Reactivase: A New Type of Molecular Chaperone

    SciTech Connect (OSTI)

    Liao, Der-Ing; Reiss, Lisa; Turner, Jr., Ivan; Dotson, Garry (Dupont)

    2010-03-08

    The function of glycerol dehydratase (GDH) reactivase is to remove damaged coenzyme B{sub 12} from GDH that has suffered mechanism-based inactivation. The structure of GDH reactivase from Klebsiella pneumoniae was determined at 2.4 {angstrom} resolution by the single isomorphous replacement with anomalous signal (SIR/AS) method. Each tetramer contains two elongated 63 kDa {alpha} subunits and two globular 14 kDa {beta} subunits. The {alpha} subunit contains structural features resembling both GroEL and Hsp70 groups of chaperones, and it appears chaperone like in its interactions with ATP. The fold of the {beta} subunit resembles that of the {beta} subunit of glycerol dehydratase, except that it lacks some coenzyme B12 binding elements. A hypothesis for the reactivation mechanism of reactivase is proposed based on these structural features.

  1. The influence of temperatures and mechanical treatments on pre- and post-emergence growth of peach and plum seedlings 

    E-Print Network [OSTI]

    Alsalih, Kamil Khidher

    1961-01-01

    , the possibility of variation between speoies SCAPI ICI ~ ~ IA NI A ~ ~ ~ 0 0 0 ~ ~ O IO Ch 33m R R CII CII CII ~ ~ A 4 SI S 0 0 0 '4l Q 4l Q s CII r 0 O ~ ~ as ~8 ~gA ICI IO 0 N Ill OE 0 CIA CIN Ch CO ~ ~ ~ t N ~ ~ 0 CCI ICI 0 0 0...W goeio4 oo ~. f As ooe ~ oero. eheea&eriheIL Q aeero%o areae ia i' piIaoale. Q4e oeaooivagg coal, 4 have hoea oaaee4 Q %he high O~erafeee, '()IIkaeee 4; ea4 0)? . gheee eee4lxlwge 4L4 aos groo ee sapL41p ehoa tirei Osaaeferro4 4e ~ gro hoaa? ?e 4L4...

  2. Supplemental macronutrients and microbial fermentation products improve the uptake and transport of foliar applied zinc in sunflower (Helianthus annuus L.) plants. Studies utilizing micro X-ray florescence

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

    Tian, Shengke; Lu, Lingli; Xie, Ruohan; Zhang, Minzhe; Jernstedt, Judith A.; Hou, Dandi; Ramsier, Cliff; Brown, Patrick H.

    2015-01-21

    Enhancing nutrient uptake and the subsequent elemental transport from the sites of application to sites of utilization is of great importance to the science and practical field application of foliar fertilizers. The aim of this study was to investigate the mobility of various foliar applied zinc (Zn) formulations in sunflower (Helianthus annuus L.) and to evaluate the effects of the addition of an organic biostimulant on phloem loading and elemental mobility. This was achieved by application of foliar formulations to the blade of sunflower (H. annuus L.) and high-resolution elemental imaging with micro X-ray fluorescence (?-XRF) to visualize Zn withinmore »the vascular system of the leaf petiole. Although no significant increase of total Zn in petioles was determined by inductively-coupled plasma mass-spectrometer, ?-XRF elemental imaging showed a clear enrichment of Zn in the vascular tissues within the sunflower petioles treated with foliar fertilizers containing Zn. The concentration of Zn in the vascular of sunflower petioles was increased when Zn was applied with other microelements with EDTA (commercial product Kick-Off) as compared with an equimolar concentration of ZnSO? alone. The addition of macronutrients N, P, K (commercial product CleanStart) to the Kick-Off Zn fertilizer, further increased vascular system Zn concentrations while the addition of the microbially derived organic biostimulant “GroZyme” resulted in a remarkable enhancement of Zn concentrations in the petiole vascular system. The study provides direct visualized evidence for phloem transport of foliar applied Zn out of sites of application in plants by using ?-XRF technique, and suggests that the formulation of the foliar applied Zn and the addition of the organic biostimulant GroZyme increases the mobility of Zn following its absorption by the leaf of sunflower.« less

  3. Coal Direct Chemical Looping Retrofit to Pulverized Coal Power Plants for In-Situ CO2 Capture

    SciTech Connect (OSTI)

    Zeng, Liang; Li, Fanxing; Kim, Ray; Bayham, Samuel; McGiveron, Omar; Tong, Andrew; Connell, Daniel; Luo, Siwei; Sridhar, Deepak; Wang, Fei; Sun, Zhenchao; Fan, Liang-Shih

    2013-09-30

    A novel Coal Direct Chemical Looping (CDCL) system is proposed to effectively capture CO2 from existing PC power plants. The work during the past three years has led to an oxygen carrier particle with satisfactory performance. Moreover, successful laboratory, bench scale, and integrated demonstrations have been performed. The proposed project further advanced the novel CDCL technology to sub-pilot scale (25 kWth). To be more specific, the following objectives attained in the proposed project are: 1. to further improve the oxygen carrying capacity as well as the sulfur/ash tolerance of the current (working) particle; 2. to demonstrate continuous CDCL operations in an integrated mode with > 99% coal (bituminous, subbituminous, and lignite) conversion as well as the production of high temperature exhaust gas stream that is suitable for steam generation in existing PC boilers; 3. to identify, via demonstrations, the fate of sulfur and NOx; 4. to conduct thorough techno-economic analysis that validates the technical and economical attractiveness of the CDCL system. The objectives outlined above were achieved through collaborative efforts among all the participants. CONSOL Energy Inc. performed the techno-economic analysis of the CDCL process. Shell/CRI was able to perform feasibility and economic studies on the large scale particle synthesis and provide composite particles for the sub-pilot scale testing. The experience of B&W (with boilers) and Air Products (with handling gases) assisted the retrofit system design as well as the demonstration unit operations. The experience gained from the sub-pilot scale demonstration of the Syngas Chemical Looping (SCL) process at OSU was able to ensure the successful handling of the solids. Phase 1 focused on studies to improve the current particle to better suit the CDCL operations. The optimum operating conditions for the reducer reactor such as the temperature, char gasification enhancer type, and flow rate were identified. The modifications of the existing bench scale reactor were completed in order to use it in the next phase of the project. In Phase II, the optimum looping medium was selected, and bench scale demonstrations were completed using them. Different types of coal char such as those obtained from bituminous, subbituminous, and lignite were tested. Modifications were made on the existing sub-pilot scale unit for coal injection. Phase III focused on integrated CDCL demonstration in the sub-pilot scale unit. A comprehensive ASPEN® simulations and economic analysis was completed by CONSOL t is expected that the CDCL process will be ready for further demonstrations in a scale up unit upon completion of the proposed project.

  4. Complex Hydride Compounds with Enhanced Hydrogen Storage Capacity

    SciTech Connect (OSTI)

    Mosher, Daniel A.; Opalka, Susanne M.; Tang, Xia; Laube, Bruce L.; Brown, Ronald J.; Vanderspurt, Thomas H.; Arsenault, Sarah; Wu, Robert; Strickler, Jamie; Anton, Donald L.; Zidan, Ragaiy; Berseth, Polly

    2008-02-18

    The United Technologies Research Center (UTRC), in collaboration with major partners Albemarle Corporation (Albemarle) and the Savannah River National Laboratory (SRNL), conducted research to discover new hydride materials for the storage of hydrogen having on-board reversibility and a target gravimetric capacity of ? 7.5 weight percent (wt %). When integrated into a system with a reasonable efficiency of 60% (mass of hydride / total mass), this target material would produce a system gravimetric capacity of ? 4.5 wt %, consistent with the DOE 2007 target. The approach established for the project combined first principles modeling (FPM - UTRC) with multiple synthesis methods: Solid State Processing (SSP - UTRC), Solution Based Processing (SBP - Albemarle) and Molten State Processing (MSP - SRNL). In the search for novel compounds, each of these methods has advantages and disadvantages; by combining them, the potential for success was increased. During the project, UTRC refined its FPM framework which includes ground state (0 Kelvin) structural determinations, elevated temperature thermodynamic predictions and thermodynamic / phase diagram calculations. This modeling was used both to precede synthesis in a virtual search for new compounds and after initial synthesis to examine reaction details and options for modifications including co-reactant additions. The SSP synthesis method involved high energy ball milling which was simple, efficient for small batches and has proven effective for other storage material compositions. The SBP method produced very homogeneous chemical reactions, some of which cannot be performed via solid state routes, and would be the preferred approach for large scale production. The MSP technique is similar to the SSP method, but involves higher temperature and hydrogen pressure conditions to achieve greater species mobility. During the initial phases of the project, the focus was on higher order alanate complexes in the phase space between alkaline metal hydrides (AmH), Alkaline earth metal hydrides (AeH2), alane (AlH3), transition metal (Tm) hydrides (TmHz, where z=1-3) and molecular hydrogen (H2). The effort started first with variations of known alanates and subsequently extended the search to unknown compounds. In this stage, the FPM techniques were developed and validated on known alanate materials such as NaAlH4 and Na2LiAlH6. The coupled predictive methodologies were used to survey over 200 proposed phases in six quaternary spaces, formed from various combinations of Na, Li Mg and/or Ti with Al and H. A wide range of alanate compounds was examined using SSP having additions of Ti, Cr, Co, Ni and Fe. A number of compositions and reaction paths were identified having H weight fractions up to 5.6 wt %, but none meeting the 7.5 wt%H reversible goal. Similarly, MSP of alanates produced a number of interesting compounds and general conclusions regarding reaction behavior of mixtures during processing, but no alanate based candidates meeting the 7.5 wt% goal. A novel alanate, LiMg(AlH4)3, was synthesized using SBP that demonstrated a 7.0 wt% capacity with a desorption temperature of 150°C. The deuteride form was synthesized and characterized by the Institute for Energy (IFE) in Norway to determine its crystalline structure for related FPM studies. However, the reaction exhibited exothermicity and therefore was not reversible under acceptable hydrogen gas pressures for on-board recharging. After the extensive studies of alanates, the material class of emphasis was shifted to borohydrides. Through SBP, several ligand-stabilized Mg(BH4)2 complexes were synthesized. The Mg(BH4)2*2NH3 complex was found to change behavior with slightly different synthesis conditions and/or aging. One of the two mechanisms was an amine-borane (NH3BH3) like dissociation reaction which released up to 16 wt %H and more conservatively 9 wt%H when not including H2 released from the NH3. From FPM, the stability of the Mg(BH4)2*2NH3 compound was found to increase with the inclusion of NH3 groups in the inner-Mg coordination

  5. Ground-based detectors in very-high-energy gamma-ray astronomy

    E-Print Network [OSTI]

    de Naurois, M

    2015-01-01

    Following the discovery of the cosmic rays by Victor Hess in 1912, more than 70 years and numerous technological developments were needed before an unambiguous detection of the first very-high-energy gamma-ray source in 1989 was made. Since this discovery the field on very-high-energy gamma-ray astronomy experienced a true revolution: A second, then a third generation of instruments were built, observing the atmospheric cascades from the ground, either through the atmospheric Cherenkov light they comprise, or via the direct detection of the charged particles they carry. Present arrays, 100 times more sensitive than the pioneering experiments, have detected a large number of astrophysical sources of various types, thus opening a new window on the non-thermal Universe. New, even more sensitive instruments are currently being built; these will allow us to explore further this fascinating domain. In this article we describe the detection techniques, the history of the field and the prospects for the future of gro...

  6. Powerful, Rotating Disk Winds from Stellar-mass Black Holes

    E-Print Network [OSTI]

    Miller, J M; Kaastra, J; Kallman, T; King, A L; Proga, D; Raymond, J; Reynolds, C S

    2015-01-01

    We present an analysis of ionized X-ray disk winds observed in the Fe K band of four stellar-mass black holes observed with Chandra, including 4U 1630-47, GRO J1655-40, H 1743-322, and GRS 1915+105. High-resolution photoionization grids were generated in order to model the data. Third-order gratings spectra were used to resolve complex absorption profiles into atomic effects and multiple velocity components. The Fe XXV line is found to be shaped by contributions from the intercombination line (in absorption), and the Fe XXVI line is detected as a spin-orbit doublet. The data require 2-3 absorption zones, depending on the source. The fastest components have velocities approaching or exceeding 0.01c, increasing mass outflow rates and wind kinetic power by orders of magnitude over prior single-zone models. The first-order spectra require re-emission from the wind, broadened by a degree that is loosely consistent with Keplerian orbital velocities at the photoionization radius. This suggests that disk winds are ro...

  7. Comptonization of cosmic microwave background by cold ultra-relativistic electron-positron pulsar wind and origin of ~100 GeV lines

    E-Print Network [OSTI]

    Iakubovskyi, Dmytro

    2015-01-01

    Previously, [1207.0458] proposed an astrophysical explanation of narrow gamma-ray line-like feature(s) at ~100 GeV from Galactic Center region observed by Fermi/LAT [1205.4700]. The model of [1207.0458] is based on the inverse Compton scattering of external ultra-violet/X-ray radiation by a cold ultra-relativistic electron-positron pulsar wind. We show that the extra broad ~30 MeV component should arise from Comptonization of cosmic microwave background radiation. We estimate the main parameters of this component and show that it can be detectable with MeV telescopes such as CGRO/COMPTEL. The location of CGRO/COMPTEL unidentified source GRO J1823-12 close to excess of 105-120 GeV emission (Reg.1 of [1205.4700]) can be interpreted as an argument in favour of astrophysical model of the narrow feature(s) at ~100 GeV.

  8. On second cohomology of duals of compact groups

    E-Print Network [OSTI]

    Neshveyev, Sergey

    2010-01-01

    We show that for any compact connected group G the second cohomology group defined by unitary invariant 2-cocycles on \\hat G is canonically isomorphic to H^2(\\widehat{Z(G)};T). This implies that the group of autoequivalences of the C*-tensor category Rep G is isomorphic to H^2(\\widehat{Z(G)};T)\\rtimes\\Out(G). We also show that a compact connected group G is completely determined by Rep G. More generally, extending a result of Etingof-Gelaki and Izumi-Kosaki we describe all pairs of compact separable monoidally equivalent groups. The proofs rely on the theory of ergodic actions of compact groups developed by Landstad and Wassermann and on its algebraic counterpart developed by Etingof and Gelaki for the classification of triangular semisimple Hopf algebras. In two appendices we give a self-contained account of amenability of tensor categories, fusion rings and discrete quantum groups, and prove an analogue of Radford's theorem on minimal Hopf subalgebras of quasitriangular Hopf algebras for compact quantum gro...

  9. X-ray bursts from the Terzan 5 transient IGR J17480-2446: nuclear rather than gravitational

    E-Print Network [OSTI]

    Manoneeta Chakraborty; Sudip Bhattacharyya

    2011-02-28

    The 2010 outburst of the transient neutron star low-mass X-ray binary IGR J17480-2446 has exhibited a series of unique X-ray bursts, as well as millihertz (mHz) quasi-periodic oscillations (QPOs) related to these bursts. It has been recently proposed that these are type-II bursts, powered by the gravitational energy. This implies that the current nuclear-burning based model of mHz QPOs is not correct, and this timing feature cannot be used as a tool to measure the neutron star parameters. We report the analysis of the Rossi X-ray Timing Explorer data of IGR J17480-2446 to show that the burst properties of this source are quite different from the properties of the type-II bursts observed from the rapid burster and GRO J1744-28. For example, the inferred ratio (~ 50-90) of the non-burst fluence to burst fluence is consistent with the thermonuclear origin of IGR J17480-2446 bursts, and is significantly different from this ratio (< 4) for type-II bursts. Our results suggest that the bursts and the mHz QPOs from IGR J17480-2446 are powered by the nuclear energy.

  10. Lung injury, inflammation and Akt signaling following inhalation of particulate hexavalent chromium

    SciTech Connect (OSTI)

    Beaver, Laura M. [Department of Pharmacology and Physiology, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Institute of Biomedical Sciences, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Stemmy, Erik J.; Constant, Stephanie L. [Institute of Biomedical Sciences, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Department of Microbiology, Immunology and Tropical Medicine, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Schwartz, Arnold [Department of Pathology, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Little, Laura G. [University of Montana, Department of Chemistry, 32 Campus Drive, Missoula, MT 59812 (United States); Gigley, Jason P. [Department of Microbiology, Immunology and Tropical Medicine, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Chun, Gina [Department of Pharmacology and Physiology, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Institute of Biomedical Sciences, George Washington University Medical Center, 2300 I Street NW, Washington, DC 20037 (United States); Sugden, Kent D. [University of Montana, Department of Chemistry, 32 Campus Drive, Missoula, MT 59812 (United States)] (and others)

    2009-02-15

    Certain particulate hexavalent chromium [Cr(VI)] compounds are human respiratory carcinogens that release genotoxic soluble chromate, and are associated with fibrosis, fibrosarcomas, adenocarcinomas and squamous cell carcinomas of the lung. We postulate that inflammatory processes and mediators may contribute to the etiology of Cr(VI) carcinogenesis, however the immediate (0-24 h) pathologic injury and immune responses after exposure to particulate chromates have not been adequately investigated. Our aim was to determine the nature of the lung injury, inflammatory response, and survival signaling responses following intranasal exposure of BALB/c mice to particulate basic zinc chromate. Factors associated with lung injury, inflammation and survival signaling were measured in airway lavage fluid and in lung tissue. A single chromate exposure induced an acute immune response in the lung, characterized by a rapid and significant increase in IL-6 and GRO-{alpha} levels, an influx of neutrophils, and a decline in macrophages in lung airways. Histological examination of lung tissue in animals challenged with a single chromate exposure revealed an increase in bronchiolar cell apoptosis and mucosal injury. Furthermore, chromate exposure induced injury and inflammation that progressed to alveolar and interstitial pneumonitis. Finally, a single Cr(VI) challenge resulted in a rapid and persistent increase in the number of airways immunoreactive for phosphorylation of the survival signaling protein Akt, on serine 473. These data illustrate that chromate induces both survival signaling and an inflammatory response in the lung, which we postulate may contribute to early oncogenesis.

  11. New mechanism for lightning initiation

    SciTech Connect (OSTI)

    Roussel-Dupre, R.; Buchwald, M.; Gurevich, A. [Lebedev Institute of Physical Sciences, Moscow (Russian Federation)] [and others

    1996-10-01

    This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). To distinguish radio-frequency (rf) signals generated by lightning from the electromagnetic pulse produced by a nuclear explosion, it is necessary to understand the fundamental nature of thunderstorm discharges. The recent debate surrounding the origin of transionospheric pulse pairs (TIPPs) detected by the BLACKBEARD experiment aboard the ALEXIS satellite illustrates this point. We have argued that TIPP events could originate from the upward propagating discharges recently identified by optical images taken from the ground, from airplanes, and from the space shuttle. In addition, the Gamma Ray Observatory (GRO) measurements of x-ray bursts originating from thunderstorms are almost certainly associated with these upward propagating discharges. When taken together, these three measurements point directly to the runaway electron mechanism as the source of the upward discharges. The primary goal of this research effort was to identify the specific role played by the runaway-air-breakdown mechanism in the general area of thunderstorm electricity and in so doing develop lightning models that predict the optical, rf, and x-ray emissions that are observable from space.

  12. The Outbursts and Orbit of the Accreting Pulsar GS 1843-02 = 2S 1845-024

    E-Print Network [OSTI]

    Mark H. Finger; Lars Bildsten; Deepto Chakrabarty; Thomas A. Prince; D. Matthew Scott; Colleen A. Wilson; Robert B. Wilson; S. Nan Zhang

    1998-12-30

    We present observations of a series of 10 outbursts of pulsed hard X-ray flux from the transient 10.6 mHz accreting pulsar GS 1843-02, using the Burst and Transient Source Experiment on the Compton Gamma Ray Observatory. These outbursts occurred regularly every 242 days, coincident with the ephemeris of the periodic transient GRO J1849-03 (Zhang et al. 1996), which has recently been identified with the SAS 3 source 2S 1845-024 (Soffitta et al. 1998). Our pulsed detection provides the first clear identification of GS 1843-02 with 2S 1845-024. We present a pulse timing analysis which shows that the 2S 1845-024 outbursts occur near the periastron passage of the neutron star's highly eccentric (e = 0.88+-0.01) 242.18+-0.01 day period binary orbit about a high mass (M > 7 solar masses) companion. The orbit and transient outburst pattern strongly suggest the pulsar is in a binary system with a Be star. Our observations show a long-term spin-up trend, with most of the spin-up occurring during the outbursts. From the measured spin-up rates and inferred luminosities we conclude that an accretion disk is present during the outbursts.

  13. Technical Analysis of Installed Micro-Combined Heat and Power Fuel-Cell System

    SciTech Connect (OSTI)

    Brooks, Kriston P.; Makhmalbaf, Atefe

    2014-10-31

    Combined heat and power fuel cell systems (CHP-FCSs) provide consistent electrical power and hot water with greater efficiency and lower emissions than alternative sources. These systems can be used either as baseload, grid-connected, or as off-the-grid power sources. This report presents a technical analysis of 5 kWe CHP-FCSs installed in different locations in the U.S. At some sites as many as five 5 kWe system is used to provide up to 25kWe of power. Systems in this power range are considered “micro”-CHP-FCS. To better assess performance of micro-CHP-FCS and understand their benefits, the U.S. Department of Energy worked with ClearEdge Power to install fifteen 5-kWe PBI high temperature PEM fuel cells (CE5 models) in the commercial markets of California and Oregon. Pacific Northwest National Laboratory evaluated these systems in terms of their economics, operations, and technical performance. These units were monitored from September 2011 until June 2013. During this time, about 190,000 hours of data were collected and more than 17 billion data points were analyzed. Beginning in July 2013, ten of these systems were gradually replaced with ungraded systems (M5 models) containing phosphoric acid fuel cell technology. The new units were monitored until June 2014 until they went offline because ClearEdge was bought by Doosan at the time and the new manufacturer did not continue to support data collection and maintenance of these units. During these two phases, data was collected at once per second and data analysis techniques were applied to understand behavior of these systems. The results of this analysis indicate that systems installed in the second phase of this demonstration performed much better in terms of availability, consistency in generation, and reliability. The average net electrical power output increased from 4.1 to 4.9 kWe, net heat recovery from 4.7 to 5.4 kWth, and system availability improved from 94% to 95%. The average net system electric efficiency, average net heat recovery efficiency, and overall net efficiency of the system increased respectively from 33% to 36%, from 38% to 41%, and from 71% to 76%. The temperature of water sent to sit however reduced by about 16% from 51?C to 43 ?C. This was a control strategy and the temperature can be controlled depending on building heat demands. More importantly, the number of shutdowns and maintenance events required to keep the systems running at the manufacturer’s rated performance specifications were substantially reduced by about 76% (for 8 to 10 units running over a one-year period). From July 2012 to June 2013, there were eight CE5 units in operation and a total of 134 scheduled and unscheduled shutdowns took place. From July 2013 to June 2014, between two to ten units were in operation and only 32 shutdowns were reported (all unscheduled). In summary, the number of shutdowns reduced from 10 shutdowns per month on average for eight CE5units to an average of 2.7 shutdowns per month for M5 units (between two to ten units).

  14. Effects of Downscattering on the Continuum and Line Spectra in Powerful Wind Environment. Monte Carlo Simulations, Analytical Results and Data Analysis

    E-Print Network [OSTI]

    Philippe Laurent; Lev Titarchuk

    2006-11-06

    In Paper by Titarchuk & Shrader the general formulation and results for photon reprocessing (downscattering) that included recoil and Comptonization effects due to divergence of the flow were presented. Here we show the Monte Carlo (MC) simulated continuum and line spectra. We also provide an analytical description of the simulated continuum spectra using the diffusion approximation. We have simulated the propagation of monochromatic and continuum photons in a bulk outflow from a compact object. Electron scattering of the photons within the expanding flow leads to a decrease of their energy which is of first order in V/c (where V is the outflow velocity). The downscattering effect of first order in V/c in the diverging flow is explained by semi-analytical calculations and confirmed by MC simulations. We conclude that redshifted lines and downscattering bumps are intrinsic properties of the powerful outflows for which Thomson optical depth is greater than one. We fitted our model line profiles to the observations using four free parameters, \\beta=V/c, optical depth of the wind \\tau, the wind temperature kT_e and the original line photon energy E_0. We show how the primary spectrum emitted close to the black hole is modified by reprocessing in the warm wind. In the framework of the our wind model the fluorescent iron line K_alpha is formed in the partly ionized wind as a result of illumination by central source continuum photons. The demonstrated application of our outflow model to the XMM observations of MCG 6-30-15, and to the ASCA observations of GRO J1655-40, points out a potential powerful spectral diagnostic for probes of the outflow-central object connection in Galactic and extragalactic BH sources.

  15. Minimal models for proteins and RNA: From folding to function

    E-Print Network [OSTI]

    D. L. Pincus; S. S. Cho; C. Hyeon; D. Thirumalai

    2008-08-22

    We present a panoramic view of the utility of coarse-grained (CG) models to study folding and functions of proteins and RNA. Drawing largely on the methods developed in our group over the last twenty years, we describe a number of key applications ranging from folding of proteins with disulfide bonds to functions of molecular machines. After presenting the theoretical basis that justifies the use of CG models, we explore the biophysical basis for the emergence of a finite number of folds from lattice models. The lattice model simulations of approach to the folded state show that non-native interactions are relevant only early in the folding process - a finding that rationalizes the success of structure-based models that emphasize native interactions. Applications of off-lattice $C_{\\alpha}$ and models that explicitly consider side chains ($C_{\\alpha}$-SCM) to folding of $\\beta$-hairpin and effects of macromolecular crowding are briefly discussed. Successful application of a new class of off-lattice model, referred to as the Self-Organized Polymer (SOP), is shown by describing the response of Green Fluorescent Protein (GFP) to mechanical force. The utility of the SOP model is further illustrated by applications that clarify the functions of the chaperonin GroEL and motion of the molecular motor kinesin. We also present two distinct models for RNA, namely, the Three Site Interaction (TIS) model and the SOP model, that probe forced unfolding and force quench refolding of a simple hairpin and {\\it Azoarcus} ribozyme. The predictions based on the SOP model show that force-induced unfolding pathways of the ribozyme can be dramatically changed by varying the loading rate. We conclude with a discussion of future prospects for the use of coarse-grained models in addressing problems of outstanding interest in biology.

  16. Key residues for the oligomerization of A{beta}42 protein in Alzheimer's disease

    SciTech Connect (OSTI)

    Ngo, Sam [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States)] [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States); Guo, Zhefeng, E-mail: zhefeng@ucla.edu [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States)] [Department of Neurology, Brain Research Institute, Molecular Biology Institute, University of California, Los Angeles, CA 90095 (United States)

    2011-10-28

    Highlights: Black-Right-Pointing-Pointer A{beta} oligomers are neurotoxins and likely the causing agents for Alzheimer's disease. Black-Right-Pointing-Pointer A{beta}42 fusion protein form globular oligomers. Black-Right-Pointing-Pointer A{beta}42 fusion protein oligomers contain SDS-resistant tetramers and hexamers. Black-Right-Pointing-Pointer Cysteine substitutions at residues 31, 32, 34, 39-41 disrupt A{beta}42 oligomerization. -- Abstract: Deposition of amyloid fibrils consisting of amyloid {beta} (A{beta}) protein as senile plaques in the brain is a pathological hallmark of Alzheimer's disease. However, a growing body of evidence shows that soluble A{beta} oligomers correlate better with dementia than fibrils, suggesting that A{beta} oligomers may be the primary toxic species. The structure and oligomerization mechanism of these A{beta} oligomers are crucial for developing effective therapeutics. Here we investigated the oligomerization of A{beta}42 in the context of a fusion protein containing GroES and ubiquitin fused to the N-terminus of A{beta} sequence. The presence of fusion protein partners, in combination with a denaturing buffer containing 8 M urea at pH 10, is unfavorable for A{beta}42 aggregation, thus allowing only the most stable structures to be observed. Transmission electron microscopy showed that A{beta}42 fusion protein formed globular oligomers, which bound weakly to thioflavin T and Congo red. SDS-PAGE shows that A{beta}42 fusion protein formed SDS-resistant hexamers and tetramers. In contrast, A{beta}40 fusion protein remained as monomers on SDS gel, suggesting that the oligomerization of A{beta}42 fusion protein is not due to the fusion protein partners. Cysteine scanning mutagenesis at 22 residue positions further revealed that single cysteine substitutions of the C-terminal hydrophobic residues (I31, I32, L34, V39, V40, and I41) led to disruption of hexamer and tetramer formation, suggesting that hydrophobic interactions between these residues are most critical for A{beta}42 oligomerization.