Sample records for molts edas meteor

  1. ARM - Instrument - molts

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006Datastreamstwrcam40m DocumentationJanuarygovInstrumentsirtgovInstrumentsmolts Documentation MOLTS : XDC

  2. 4, 11811201, 2004 Canadian Meteor

    E-Print Network [OSTI]

    Boyer, Edmond

    , and M. Campbell-Brown 4 1 Department of Physics, The University of Western Ontario, Canada 2 Department identical, as part of a campaign to shed light on the initial radius problem (Campbell-Brown and Jones, 2003 Discussions Canadian Meteor Orbit Radar (CMOR) A. R. Webster 1, 2 , P. G. Brown 1 , J. Jones 1 , K. J. Ellis 3

  3. ITI Energy EDA JV | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunan Runhua New EnergyIT Power Limited Jump to:ITI Energy EDA JV

  4. METEOR-S Web service Annotation Framework Abhijit Patil, Swapna Oundhakar, Amit Sheth, Kunal Verma

    E-Print Network [OSTI]

    Prié, Yannick

    METEOR-S Web service Annotation Framework Abhijit Patil, Swapna Oundhakar, Amit Sheth, Kunal Verma, verma}@cs.uga.edu ABSTRACT The World Wide Web is emerging not only as an infrastructure for data, but also for a broader variety of resources that are increasingly being made available as Web services

  5. atlantic ocean meteor: Topics by E-print Network

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

    a 10,000 ton meteor about 17-meters discovered' for many decades afterwards, the Chelyabinsk Meteor was extensively videoed by hundreds of dashcams and cell phones as it...

  6. 26The Frequency of Large Meteor Impacts On February 14, 2013 a 10,000 ton meteor

    E-Print Network [OSTI]

    over the town of Chelyabinsk and the explosion caused major damage to the town injuring 1,000 people `discovered' for many decades afterwards, the Chelyabinsk Meteor was extensively videoed by hundreds explodes with an energy of 4.2x109 Joules. How many tons of TNT did the Chelyabinsk Meteor yield

  7. THE RETURN OF THE ANDROMEDIDS METEOR SHOWER

    SciTech Connect (OSTI)

    Wiegert, Paul A.; Brown, Peter G.; Weryk, Robert J.; Wong, Daniel K., E-mail: pwiegert@uwo.ca [Department of Physics and Astronomy, University of Western Ontario, London N6A3K7 (Canada)

    2013-03-15T23:59:59.000Z

    The Andromedid meteor shower underwent spectacular outbursts in 1872 and 1885, producing thousands of visual meteors per hour and described as ''stars fell like rain'' in Chinese records of the time. The shower originates from comet 3D/Biela whose disintegration in the mid-1800's is linked to the outbursts, but the shower has been weak or absent since the late 19th century. This shower returned in 2011 December with a zenithal hourly rate of approximately 50, the strongest return in over a hundred years. Some 122 probable Andromedid orbits were detected by the Canadian Meteor Orbit Radar while one possible brighter Andromedid member was detected by the Southern Ontario Meteor Network and several single station possible Andromedids by the Canadian Automated Meteor Observatory. The shower outburst occurred during 2011 December 3-5. The radiant at R.A. +18 Degree-Sign and decl. +56 Degree-Sign is typical of the ''classical'' Andromedids of the early 1800s, whose radiant was actually in Cassiopeia. Numerical simulations of the shower were necessary to identify it with the Andromedids, as the observed radiant differs markedly from the current radiant associated with that shower. The shower's orbital elements indicate that the material involved was released before 3D/Biela's breakup prior to 1846. The observed shower in 2011 had a slow geocentric speed (V{sub G} = 16 km s{sup -1}) and was comprised of small particles: the mean measured mass from the radar is {approx}5 Multiplication-Sign 10{sup -7} kg, corresponding to radii of 0.5 mm at a bulk density of 1000 kg m{sup -3}. Numerical simulations of the parent comet indicate that the meteoroids of the 2011 return of the Andromedids shower were primarily ejected during 3D/Biela's 1649 perihelion passage. The orbital characteristics, radiant, and timing as well as the absence of large particles in the streamlet are all broadly consistent with simulations. However, simulations of the 1649 perihelion passage necessitate going back five Lyapunov times (which is only 25 yr for the highly perturbed parent). As a result, the stream evolution is somewhat uncertain and some discrepancy with the observations is to be expected: the radiant is 8 Degree-Sign off, the inclination 3 Degree-Sign higher, and the peak of the shower occurs a day earlier than predicted. Predictions are made regarding other appearances of the shower in the years 2000-2047 based on our numerical model. We note that the details of the 2011 return can, in principle, be used to better constrain the orbit of 3D/Biela prior to the comets first recorded return in 1772 and we address this issue briefly as well.

  8. A passive FPAA based RF scatter meteor detector

    E-Print Network [OSTI]

    Popowicz, Adam; Bernacki, Krzysztof; Fietkiewicz, Karol

    2015-01-01T23:59:59.000Z

    In the article we present a hardware meteor detector. The detection principle is based on the electromagnetic wave reflection from the ionized meteor trail in the atmosphere. The detector uses the ANADIGM field programmable analogue array (FPAA), which is an attractive alternative for a typically used detecting equipment - a PC computer with dedicated software. We implement an analog signal path using most of available FPAA resources to obtain precise audio signal detection. Our new detector was verified in collaboration with the Polish Fireball Network - the organization which monitors meteor activity in Poland. When compared with currently used signal processing PC software employing real radio meteor scatter signals, our low-cost detector proved to be more precise and reliable. Due to its cost and efficiency superiority over the current solution, the presented module is going to be implemented in the planned distributed detectors system.

  9. Proceedings of the IMC, Poznan, 2013 1 EDMOND Meteor Database

    E-Print Network [OSTI]

    Veres, Peter

    Rec software written by S. Molau (1999) and UFO Tool written by SonotaCo (2009). In the last column of Table 1-station meteors Network Num. of Meteors Tool stations single BOAM 10 26 779 UFO CEMeNt 15 40 742 UFO HMN 13 167 834 MetRec IMNT 15 135 534 UFO PFN 23 30 576 UFO MetRec SVMN 3 39 257 UFO UKMON 4 3 372 UFO Bosnia 4 1

  10. The Environmental Data Acquisition System (EDAS) developed at the Royal Observatory of Belgium

    E-Print Network [OSTI]

    Beauducel, François

    conditions due to thermal waves were met. Similar equipment (EDAS) was also experimented on during the solar in this paper. The transducer's qualification is carried out in a laboratory where the admittance of various

  11. Effects of Induced Molting on the Well-Being of Egg-Laying Hens

    E-Print Network [OSTI]

    McCowan, Brenda

    , 2003; Biggs, Persia, Koelkebeck, & Parsons, 2004; Landers, Howard, Woodward, Birkhold, & Ricke, 2005 frequently dismissed them. A novel, nonfast-molt program was developed recently (Biggs et al., 2004) and has compared to feed removal on hen social behavior and psy- chological well-being were insignificant (Biggs et

  12. The Chelyabinsk Meteor: A Cosmic Wake-up Call?

    E-Print Network [OSTI]

    Robeson, Scott M.

    The Chelyabinsk Meteor: A Cosmic Wake-up Call? Monday, Oct. 14, 8:00 PM Rawles Hall The Inaugural F, the shock wave reached the ground in Chelyabinsk Russia, breaking windows and injuring about 1500 people from flying glass. The Chelyabinsk impactor was smaller

  13. NHR-23 dependent collagen and hedgehog-related genes required for molting

    SciTech Connect (OSTI)

    Kouns, Nathaniel A.; Nakielna, Johana; Behensky, Frantisek [Laboratory of Model Systems, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague (Czech Republic)] [Laboratory of Model Systems, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague (Czech Republic); Krause, Michael W. [Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (United States)] [Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (United States); Kostrouch, Zdenek [Laboratory of Model Systems, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague (Czech Republic)] [Laboratory of Model Systems, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague (Czech Republic); Kostrouchova, Marta, E-mail: marta.kostrouchova@lf1.cuni.cz [Laboratory of Model Systems, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague (Czech Republic)] [Laboratory of Model Systems, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University, Prague (Czech Republic)

    2011-10-07T23:59:59.000Z

    Highlights: {yields} NHR-23 is a critical regulator of nematode development and molting. {yields} The manuscript characterizes the loss-of-function phenotype of an nhr-23 mutant. {yields} Whole genome expression analysis identifies new potential targets of NHR-23. {yields} Hedgehog-related genes are identified as NHR-23 dependent genes. {yields} New link between sterol mediated signaling and regulation by NHR-23 is found. -- Abstract: NHR-23, a conserved member of the nuclear receptor family of transcription factors, is required for normal development in Caenorhabditis elegans where it plays a critical role in growth and molting. In a search for NHR-23 dependent genes, we performed whole genome comparative expression microarrays on both control and nhr-23 inhibited synchronized larvae. Genes that decreased in response to nhr-23 RNAi included several collagen genes. Unexpectedly, several hedgehog-related genes were also down-regulated after nhr-23 RNAi. A homozygous nhr-23 deletion allele was used to confirm the RNAi knockdown phenotypes and the changes in gene expression. Our results indicate that NHR-23 is a critical co-regulator of functionally linked genes involved in growth and molting and reveal evolutionary parallels among the ecdysozoa.

  14. MRI Magnet Design: Search Space Analysis, EDAs and a Real-World Problem with Significant Dependencies

    E-Print Network [OSTI]

    Gallagher, Marcus

    MRI Magnet Design: Search Space Analysis, EDAs and a Real-World Problem with Significant Dependencies Bo Yuan School of Information Technology and Electrical Engineering The University of Queensland Technology and Electrical Engineering The University of Queensland QLD 4072, Australia +61-7-33656197 marcusg

  15. Conference on Mountain Meteorology, 7-11 August 2000 Aspen, Colorado, Amer. Meteor. Soc., Preprint p.11-14.

    E-Print Network [OSTI]

    Houze Jr., Robert A.

    9th Conference on Mountain Meteorology, 7-11 August 2000 Aspen, Colorado, Amer. Meteor. Soc-11 August 2000 Aspen, Colorado, Amer. Meteor. Soc., Preprint p.11-14. the Osservatorio Ticinese at Locarno

  16. Effects of zinc on Salmonella in the layer house environments and laying hens, and the ability of zinc to induce molt in laying hens

    E-Print Network [OSTI]

    Park, Shinyoung

    2005-02-17T23:59:59.000Z

    environments, and its ability to induce a molt in single comb white leghorn hens. In part, the antibacterial properties of zinc may reduce environmental contamination in a poultry house by interrupting airborne routes. The first phase involved detecting...

  17. The Canadian Automated Meteor Observatory (CAMO): System overview R.J. Weryk a,

    E-Print Network [OSTI]

    Wiegert, Paul

    The Canadian Automated Meteor Observatory (CAMO): System overview R.J. Weryk a, , M.D. Campbell-Brown a,b , P.A. Wiegert a,b , P.G. Brown a,b , Z. Krzeminski a , R. Musci a a Dept. of Physics and Brown, 2012, 2013) using the Canadian Meteor Orbit Radar (CMOR) and a number of Gen-III image

  18. Data:D3cc50a9-5d90-447a-b782-2820eda31b95 | Open Energy Information

    Open Energy Info (EERE)

    a-b782-2820eda31b95 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic...

  19. Inertia-gravity wave in the polar mesopause region inferred from successive images of a meteor train

    E-Print Network [OSTI]

    Vadas, Sharon

    train was observed by two all-sky cameras for detecting the aurora and sodium airglow at Syowa Station estimated with an all-sky television camera for detecting the aurora. After the passage of this fireball field in the MLT region. Meteor trains are luminous clouds that are formed along the meteor orbits after

  20. The in vivo and in vitro effect of a fructooligosaccharide prebiotic combined with alfalfa molt diets on egg production and salmonella in laying hens

    E-Print Network [OSTI]

    Donalson, Lisa Michelle

    2005-08-29T23:59:59.000Z

    have encouraged the industry to seek alternatives to feed withdrawal with one alternative being feeding a high fiber diet like alfalfa. Alfalfa is high in protein, but low in energy which is desirable for a molt diet. Alfalfa??s fermentation properties...

  1. A sporadic layer in the Venus lower ionosphere of meteoric origin M. Patzold,1

    E-Print Network [OSTI]

    Mendillo, Michael

    ¨usler,2 M. K. Bird,3 G. L. Tyler,4 A. A. Christou,5 and P. Withers6 Received 1 September 2008; revised 22 hemisphere of the same orbit; they are detected at all latitudes, but only at solar zenith angles between 55 meteor layer electron densities increase with decreasing solar zenith angle. Layer shapes are symmetric

  2. Plutonium-238 observations as a test of modeled transport and surface deposition of meteoric smoke particles

    E-Print Network [OSTI]

    Chipperfield, Martyn

    Plutonium-238 observations as a test of modeled transport and surface deposition of meteoric smoke chemistry-climate model (CCM) to simulate the transport and deposition of plutonium- 238 oxide nanoparticles. P. Chipperfield, and J. M. C. Plane (2013), Plutonium-238 observations as a test of modeled

  3. Shallow meteoric alteration and burial diagenesis of massive dolomite in the Castle Reef Formation, northwest Montana 

    E-Print Network [OSTI]

    Whitsitt, Philip Mark

    1989-01-01T23:59:59.000Z

    replacement. Partial dissolution of the replacive dolomite and subsequent precipitation of brightly luminescent dolomite overgrowths ( g 0= -5. 3 to -2. 5 40) occurred in shallow burial meteoric 18 environments. Distribution of the bright overgrowths... indicates flow pathways similar to those recognized by g 0 trends in the replacive dolomite. A final stage of red luminescent dolomite formed after further compaction and local dissolution of the bright overgrowths and prior to hydrocarbon migration...

  4. Shallow meteoric alteration and burial diagenesis of massive dolomite in the Castle Reef Formation, northwest Montana

    E-Print Network [OSTI]

    Whitsitt, Philip Mark

    1989-01-01T23:59:59.000Z

    ), Sawmill Creek (SC), Half Dome Crag (HDC), Morningstar Mountain (MM), Mount Field (MF), Gateway Pass (GP), North Fork of Dupuyer Creek (NFD), South Fork of Dupuyer Creek (SFD), Volcano Reef (VR), North Fork of Teton River (NFT), Teton River (TR), Cave...SHALLOW METEORIC ALTERATION AND BURIAL DIAGENESIS OF MASSIVE DOLOM I TE I N THE CASTLE REEF FORMAT I ON ~ NORTHWEST MONTANA A Thesis by PHILIP MARK WHITSITT Submitted to the Office of Graduate Studies of Texas A&M University in partial...

  5. Dust from Comet 209P/LINEAR during its 2014 Return: Parent Body of a New Meteor Shower, the May Camelopardalids

    E-Print Network [OSTI]

    Ishiguro, Masateru; Hanayama, Hidekazu; Takahashi, Jun; Hasegawa, Sunao; Sarugaku, Yuki; Watanabe, Makoto; Imai, Masataka; Goda, Shuhei; Akitaya, Hiroshi; Takagi, Yuhei; Morihana, Kumiko; Honda, Satoshi; Arai, Akira; Sekiguchi, Kazuhiro; Oasa, Yumiko; Saito, Yoshihiko; Morokuma, Tomoki; Murata, Katsuhiro; Nogami, Daisaku; Nagayama, Takahiro; Yanagisawa, Kenshi; Yoshida, Michitoshi; Ohta, Kouji; Kawai, Nobuyuki; Miyaji, Takeshi; Fukushima, Hideo; Watanabe, Jun-ichi; Opitom, Cyrielle; Jehin, Emmanuel; Gillon, Michael; Vaubaillon, Jeremie J

    2014-01-01T23:59:59.000Z

    We report a new observation of the Jupiter-family comet 209P/LINEAR during its 2014 return. The comet is recognized as a dust source of a new meteor shower, the May Camelopardalids. 209P/LINEAR was apparently inactive at a heliocentric distance rh = 1.6 au and showed weak activity at rh nuclear surface during the comet's dormant phase. An edge-on image suggests that particles up to 1 cm in size (with an uncertainty of factor 3-5) were ejected following a differential power-law size distribution with index q=-3.25+-0.10. We derived a mass loss rate of 2-10 kg/s during the active phase and a total mass of ~5x10^7 kg during the 2014 return. The ejection terminal velocity of millimeter- to centimeter-sized particles was 1-4 m/s, which is comparable to the escape velocity from the nucleus (1.4 m/s). These results imply that such large meteoric particles marginally escaped from the highly dormant comet nucleus via the gas drag force only within a fe...

  6. Condamine River Meteor Zamia

    E-Print Network [OSTI]

    Greenslade, Diana

    Surbiton Clermont Fairview Mitchell Mt Larcom Mt Morgan Rolleston Peak Vale Monteagle Mount Owen Chinchilla

  7. Chlorine-36 in Water, Snow, and Mid-Latitude Glacial Ice of North America: Meteoric and Weapons-Tests Production in the Vicinity of the Idaho National Engineering and Environmental Laboratory, Idaho

    SciTech Connect (OSTI)

    L. DeWayne; J. R. Green (USGS); S. Vogt, P. Sharma (Purdue University); S. K. Frape (University of Waterloo); S. N. Davis (University of Arizona); G. L. Cottrell (USGS)

    1999-01-01T23:59:59.000Z

    Measurements of chlorine-36 (36Cl) were made for 64 water, snow, and glacial-ice and -runoff samples to determine the meteoric and weapons-tests-produced concentrations and fluxes of this radionuclide at mid-latitudes in North America. The results will facilitate the use of 36Cl as a hydrogeologic tracer at the Idaho National Engineering and Environmental Laboratory (INEEL). This information was used to estimate meteoric and weapons-tests contributions of this nuclide to environmental inventories at and near the INEEL. The data presented in this report suggest a meteoric source 36Cl for environmental samples collected in southeastern Idaho and western Wyoming if the concentration is less than 1 x 10 7 atoms/L. Additionally, concentrations in water, snow, or glacial ice between 1 x 10 7 and 1 x 10 8 atoms/L may be indicative of a weapons-tests component from peak 36Cl production in the late 1950s. Chlorine-36 concentrations between 1 x 10 8 and 1 x 10 9 atoms/L may be representative of re-suspension of weapons-tests fallout airborne disposal of 36Cl from the INTEC, or evapotranspiration. It was concluded from the water, snow, and glacial data presented here that concentrations of 36Cl measured in environmental samples at the INEEL larger than 1 x 10 9 atoms/L can be attributed to waste-disposal practices.

  8. 6, 53575386, 2006 Meteoric smoke

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    particles". These particles are thought to be of great importance for many mid- dle atmosphere phenomena are thought to play a major role in a host of mid-25 dle atmospheric phenomena, such as noctilucent clouds

  9. LANL analyzes meteor fragments nondestructively

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

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

  10. Johns, R. H., D. W. Burgess, C. A. Doswell III, M. S. Gilmore, J. A. Hart, and S. F. Piltz, 2013: The 1925 Tri-State tornado damage path and associated storm system. Electronic J. Severe Storms Meteor., 8 (2), 133.

    E-Print Network [OSTI]

    Doswell III, Charles A.

    mi) east-northeast of the apparent end of the Tri- State tornado damage path in Pike County, IN: The 1925 Tri- State tornado damage path and associated storm system. Electronic J. Severe Storms Meteor., 8 (2), 1­33. 1 The 1925 Tri-State Tornado Damage Path and Associated Storm System ROBERT H. JOHNS

  11. Ecology Letters has undergone a meteoric rise since its creation in 1998 to being the most highly cited ecological journal in 2007. With 100% of editorial decisions being on-time, an average time to first decisions on manuscripts of only 22 days, and a

    E-Print Network [OSTI]

    Holyoak, Marcel

    EDITORIAL Ecology Letters has undergone a meteoric rise since its creation in 1998 to being the most highly cited ecological journal in 2007. With 100% of editorial decisions being on publication of only 29 days in 2007 (49 days for print publication), Ecology Letters has also altered the way

  12. Carbon dioxide, hydrographic, and chemical data obtained during the R/V Meteor Cruise 18/1 in the North Atlantic Ocean (WOCE Section A1E, September 1991)

    SciTech Connect (OSTI)

    Johnson, K.M.; Wallace, D.W.R. [Brookhaven National Laboratory, Upton, NY (United States); Schneider, B. [Institut fuer Ostseeforschung, Rostock-Warnemuende (Germany); Mintrop, L. [Institut fuer Meereskunde, Kiel (Germany); Kozyr, A. [Oak Ridge National Laboratory, TN (United States)

    1996-07-01T23:59:59.000Z

    The North Atlantic Ocean is characterized by an intense meridional circulation cell carrying near-surface waters of tropical and subtropical origin northward and deep waters of arctic and subarctic origin southward. The related {open_quotes}overturning{close_quotes} is driven by the sinking of water masses at high latitudes. The overturning rate and thus the intensity of the meridional transports of mass, heat, and salt, is an important control parameter for the modeling of the ocean`s role in climate. The Research Vessel (R/V) Meteor Cruise 18/1 was one in a series of cruises in the North Atlantic that started in March 1991 and continued until 1995. This data documentation discusses the procedures and methods used to measure total carbon dioxide (TCO{sub 2}) and total alkalinity (TALK) at hydrographic stations, as well as underway partial pressure of CO{sub 2} (pCO{sub 2}) measured during the RIV Meteor Cruise 18/1 in the North Atlantic Ocean (Section A1E). Conducted as part of the World Ocean Circulation Experiment (WOCE) and the German North Atlantic Overturning Rate Determination expedition, the cruise began in Reykjavik, Iceland, on September 2, 1991, and ended after 24 days at sea in Hamburg, Germany, on September 25, 1991. WOCE Zonal Section AlE began at 60{degrees}N and 42{degrees}30{prime} W (southeast of Greenland) and continued southeast with a closely spaced series of hydrocasts to 52{degrees}20{prime} N and 14{degrees}15{prime} W (Porcupine Shelves). Measurements made along WOCE Section AlE included pressure, temperature, salinity, and oxygen measured by a conductivity, temperature and depth (CTD) sensor; bottle salinity; oxygen; phosphate; nitrate; nitrite; silicate; TCO{sub 2}; TALK; and underway pCO{sub 2}. A total of 61 CTD casts were made, including 59 bottle casts and 2 calibration stations.

  13. Electrochemical Design Associates EDA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJump to: navigation, searchElectricElectrochemical Design

  14. Primary feather molt of juvenile mourning doves in Texas 

    E-Print Network [OSTI]

    Morrow, Michael Eugene

    1983-01-01T23:59:59.000Z

    The mourning dove breeds throughout the 48 contiguous states of the United States, portions of the Candadian provinces, the Greater Antilles, and Mexico (Keeler 1977). In the United States, hunting of mourning doves during 1980 was permitted in 32 of the 48... year than the combined total of all other migratory game birds (Keeler 1977). Management of mourning doves has been focused primarily on regulating hunting to achieve proper harvest (Dolton 1977). Recently a gradual decline in the breeding...

  15. AGEING NORTH AMERICAN LANDBIRDS BY MOLT LIMITS AND PLUMAGE CRITERIA

    E-Print Network [OSTI]

    DeSante, David F.

    TO THE IDENTIFICATION GUIDE TO NORTH AMERICAN BIRDS, PART I Dan Froehlich Slate Creek Press #12;AGEING NORTH AMERICAN TO NORTH AMERICAN BIRDS, PART I Dan Froehlich Slate Creek Press Bolinas, California #12;Ageing North by David F. DeSante, Peter Pyle, and Nicole Michel for Slate Creek Press, P.O. Box 219, Bolinas, California

  16. Primary feather molt of juvenile mourning doves in Texas

    E-Print Network [OSTI]

    Morrow, Michael Eugene

    1983-01-01T23:59:59.000Z

    . $ of total birds showing delay is given in parentheses. Study Jan-Mar K (%) Capture periods ~Ar-Jun ~Ju - e c-ec X (%) X (%) X (N) Swank (1952, 1955a) 16. 9(58) 9. 5(67) 13. 2(43) 7. 1(68) Max. Ave b 15. 5(29) 16. 7(33) 6. 6(35) 3. 4(55) a...

  17. Kamera AMOS (All Sky Meteor Orbit System)

    E-Print Network [OSTI]

    Veres, Peter

    systémom na automatickú registráciu meteorov (UFO Capture, http://sonotaco.com ). Hlavným cieom siete je

  18. assessment system edas: Topics by E-print Network

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

    or other means, without the permission of the author 12;ii. A life cycle assessment (LCA) was conducted for the LEEDcertified Medical Sciences Building Victoria, University of...

  19. Kursplan fr lsret 2002/2003 PROGRAMMERING, FK EDA510

    E-Print Network [OSTI]

    poäng: 3. Betygskala: TH. Valfri för: K3, L5, M3. Kursansvarig: Roy Andersson, Roy. Objekt och operationer, klasser och metoder, ärvning, länkade listor och applets. Litteratur Holm P

  20. Kursplan fr lsret 2001/2002 PROGRAMMERING, FK EDA510

    E-Print Network [OSTI]

    : 3.0 Betygskala: TH. Valfri för: K3, L3, M4. Kursansvarig: Roy Andersson, Roy och applets. Litteratur: Holm P.: Objektorienterad programmering och Java. Studentlitteratur, 1999

  1. Can EDA Combat the Rise of Electronic Counterfeiting? Farinaz Koushanfar

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    , TX Saverio Fazzari Booz Allen Hamilton, Inc., Arlington, VA Carl McCants Defense Advanced Research

  2. EDA University Center Program Center for Industrial Research and Service

    E-Print Network [OSTI]

    Lin, Zhiqun

    line" well-being of the region coupled with technical assistance to the critical organizations and businesses of the region. The program provides sustainability assessments, technical assistance, these important trade centers saw nonfarm job increases of 2.5 percent despite population losses. Iowa

  3. asteroids comets meteors: Topics by E-print Network

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

    "Space Protection of the Earth," took place September 26-30, 1995 (Snezhinsk, Chelyabinsk region between the Tunguska object and Earth's atmosphere. Models and laboratory...

  4. INTRODUCTION Meteoric water plays an important role in the

    E-Print Network [OSTI]

    Bindeman, Ilya N.

    and Sheppard, 1986; Balsley and Gregory, 1998); or (3) partial melting of the walls of the magma chamber (Bacon minerals and glass by cold HF. The University of Wisconsin CO2-laser mass- spectrometer system (Valley et was done in a corundum mortar and normally took from 1 to 5 days. Selected ion microprobe analyses were

  5. A simulation model of the response of molting Pacific black brant to helicopter disturbance

    E-Print Network [OSTI]

    Miller, Mark Wayne

    1991-01-01T23:59:59.000Z

    , unpubl. data). Interpolation was used to fill gape in the data. The model has 3 classes of flock size (&26, 26-100, &100), 11 altitudes (150, 305, 460, 610, 760, 915, 1065, 1220, 1525, 1680, 1830 m), and 13 classes of lateral distance (0-0. 500, 0. 501...-then statements. For example, an overflight at an altitude of 305 m (1000 ft) directly over a flock of 75 brant would cause the birds to be 19 TABLE 2 Simulation of a either a Bell 206 or Bell 412 helicopter flying directly from Lonely to Kogru airfield...

  6. The effect of dietary erythromycin and force molting on the reproductive performance of heavy breed hens

    E-Print Network [OSTI]

    Noriega Coello, Carlos

    1969-01-01T23:59:59.000Z

    feed less e& fic: en41y 4han those from dame fed the erv th: o&' yci n fre. , di ct. 7orce mol. ing oi' the breeder hens sbo. tip; ?'!; -::: L!. :e cv sc i; o cgg ?"rodnc4 Lo!& . '. e: . 14ed in b "4'. , er ? le:I. cx!cy of f cad 1&. 41 ' ' 7;! 41...

  7. RESEARCH ARTICLE Nuclear Receptor BgFTZ-F1 Regulates Molting

    E-Print Network [OSTI]

    Belles, Xavier

    Institut de Biologia Evolutiva (CSIC-UPF), Passeig Mari´tim de la Barceloneta 37-49, Barcelona, Spain Grant de Biologia Evolutiva (CSIC-UPF), Passeig Mari´tim de la Barceloneta 37-49, 08003 Barcelona, Spain. E-mail: xavier.belles@ibe.upf-csic.es or david.martin@ibe.upf-csic.es DOI 10.1002/dvdy.21728 Published online 23

  8. DISCRIMINATION OF CONSPECIFIC MALE MOLT ODOR SIGNALS BY MALE CRAYFISH, ORCONECTES RUSTICUS

    E-Print Network [OSTI]

    Moore, Paul A.

    for Sensory Ecology, and Department of Biological Sciences, Bowling Green State University, Bowling Green Green State University, Bowling Green, Ohio 43402, U.S.A. (e-mail: pmoore@bgnet.bgsu.edu) A B S T R A C for Neuroscience, Mind and Behavior, Laboratory for Sensory Ecology, and Department of Biological Sciences, Bowling

  9. The ecdysteroid titer in the female prawn, Macrobrachium rosenbergii during the molt cycle

    E-Print Network [OSTI]

    Newitt, Richard Allen

    1981-01-01T23:59:59.000Z

    combined aqueous washes (?2) partition aqueous phase ?1 3 times against H20 saturated 1-BuOH (1:1 v/v) centrifuge if necessary discard aqueous hypophase wash countercurrently 1-BuOH phases, first with pooled aqueous washes (?2) then twice more with 1-Bu... extraction to allow determination of recovery. The final aqueous phase (41) was saved. The hexane epiphases were countercurrently washed two times with water, 1;1 v/v, and discarded. The aqueous washes were pooled and saved (42). Centrifugation (5, 000 x...

  10. ADVISER ROOM # EMAIL ADDRESS Adams 221 COBH (eda@ce.montana.edu)

    E-Print Network [OSTI]

    Dyer, Bill

    , Michael L. Adams Senior CE Betcher, Jacob M. Lewandowski Freshman CE Bigelow, Adam J. (F 11) Larsson Sophomore CE Deen, Michael Perkins Junior CE Devoe, Colleen L. (1st deg Arch) Larsson Sophomore CE #12;DeWitt

  11. Kursplan fr lsret 2001/2002 INLEDANDE PROGRAMVARUTEKNIK -PROJEKT EDA322

    E-Print Network [OSTI]

    to Software Engineering - Project Poäng: 5.0 Betygskala: UG. Obligatorisk för: D2. Kursansvarig som sedan praktiseras i form av projektarbete. I projektarbetet ingår bl.a. specifikation

  12. Molted carbonate fuel cell product design and improvement - 4th quarter, 1995. Quarterly report, October 1, 1995--December 31, 1995

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    The primary objective of this project is to establish the commercial readiness of MW-class IMHEX Molten Carbonate Fuel Cell power plants. Progress is described on marketing, systems design and analysis, product options and manufacturing.

  13. USDA Forest Service Gen. Tech. Rep. PSW-152. 1995. 99 Molts and Plumages in the Annual Cycle of the

    E-Print Network [OSTI]

    Standiford, Richard B.

    of the Marbled Murrelet Harry R. Carter1 Janet L. Stein2 at sea have usually lumped all murrelets together juveniles at sea in the late summer and early fall to indirectly determine breeding success. These efforts the late summer and early fall. This method, based on current knowledge, will require modification as new

  14. Preliminary estimation of the footprint and survivability of the Chelyabinsk Meteor fragments

    E-Print Network [OSTI]

    Parigini, Cristina; Haya-Ramos, Rodrigo

    2013-01-01T23:59:59.000Z

    There are several differences between the planetary entry of space vehicles and that of asteroids. In this work we do investigate the applicability of classical methods and approaches developed for debris analysis to asteroid entry. In particular, the in-house DEBRIS tool, which has been designed and developed to address the debris problem for uncontrolled re-entry objects, is used here to predict the survivability and the ground footprint of asteroid fragments. The results obtained for the Chelyabinsk event are presented as test case. A comparison with the current available information is provided, proving the validity of the proposed approach.

  15. Meteoritics & Planetary Science 36, 14111414 (2001) Available online at http://www.uark.edu/meteor

    E-Print Network [OSTI]

    " and range from "acid rain" to "zoogeomorphology". They are well written and would be understandable to any", "landscape sensitivity", "medical geology", "rain splash" and "ecclesiastical geology" (that deals

  16. Proceedings of the IMC, Armagh, 2010 1 Database of Meteor Orbits from several European Video

    E-Print Network [OSTI]

    Veres, Peter

    - bined and assessed by using different detection and pro- cessing tools (UFO Tools, Met of f/0.8 ­ f/1.4. Most of the stations uses UFOCapture (from UFO Tools of SonotaCo, 2009) software

  17. 1-3 April, Rome, Italy EDA Publishing/DTIP 2009 ISBN: 978-2-35500-009-6

    E-Print Network [OSTI]

    Boyer, Edmond

    and Characterization of a Hybrid Valve for Microfluidic Applications G. Simone1§ , G. Perozziello1§* , G. Sardella1 , I in correspondence of the end of two microfluidic channels of a fabricated PMMA chip. Prior the bonding, a plasma with an external pressure or vacuum is possible, respectively to obstruct or to connect the microfluidic channels

  18. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Boyer, Edmond

    Singapore Institute of Manufacturing Technology (SIMTech), 71 Nanyang Drive, Singapore 638075 2 Mechanical are conventionally fabricated by mechanical punching or laser machining on ceramic green sheets, followed for manufacturing micro structures on polymeric materials [4]. The mechanisms for cavity filling and process

  19. Data:012caa49-81ad-4348-956e-da55ce762cef | Open Energy Information

    Open Energy Info (EERE)

    Green Power? Green power refers to electricity generated from renewable sources, such as solar, wind, biomass, and hydro power. How Does the Green Power Program Work? Otero County...

  20. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Boyer, Edmond

    report the design of open-loop convective accelerometers [1-10] but very few of them concern and room temperature compensation, temperature control of the heater was studied by [6] and is implemented by a Wheatstone bridge setup. These sensors suffer from several weaknesses, such as: · A quite low intrinsic

  1. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Boyer, Edmond

    results in high input voltages is principally due to temperature dependency of Polysilicon properties Engineering Department, Power and water University of Technology, Tehran * 424 Hafez Ave., Postal Code of the hot and cold Polysilicon arms with different cross- section or different length. The cold arm and hot

  2. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    thermal energy is being converted back to electricity based on the Seebeck-effect. Utilizing this signal be fed on the temperature difference, generated by the losses of heat dissipating elements and therefore they do not load the drive circuit electrically. Their maximum speed is small compared to electrical

  3. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Boyer, Edmond

    ) or wafer-scale level packaging (WSLP). This technology achieves radio frequency (RF) curing of adhesives heating thus reducing the risk to thermally sensitive devices. Variable frequency microwave (VFM) heating are linked using a cross- mapping routine. The principle of heating using the evanescent fringing fields

  4. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . INTRODUCTION The past few years have seen an increasing focus on energy harvesting issue, including power harvest electrical energy from movement present in the application environment. Various kinetic generators energy. In this study, we present an acoustic wave actuated microgenerator with high output voltage

  5. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . In the equivalent circuit, bottom drawing of Fig. 1, the electret is represented by the voltage source Ve in series converter was modeled in [3] by the use of equivalent circuit models. In [5], optimiza- tion of this device Energy Harvester at Large Amplitude Narrow and Wide Band Vibrations Lars Geir Whist Tvedt, Lars

  6. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Boyer, Edmond

    The simplest and probably the most abstract model of a transducer is an equivalent electrical circuit composed by modeling and simulating an integrated power harvesting circuit. II. MODELING MULTI-DOMAINS SYSTEMS Several characteristics of the microgenerator. The current amplitude ip depends of the amount of mechanical vibrations

  7. Budapest, Hungary, 17-19 September 2007 EDA Publishing/THERMINIC 2007 -1 -ISBN: 978-2-35500-002-7

    E-Print Network [OSTI]

    Boyer, Edmond

    into desired shapes. For high-power system level cooling, extruded heat sinks allow greater heat dissipation to water cooling in 2005 [3]. A typical liquid cooling system uses a pump to circulate a single challenges of the future. It has been shown that when combined with two-phase passive cooling devices

  8. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    cavities, channels and vias were conventionally fabricated via mechanical punching [3] or laser drilling [4 such like micro channels or tapered features is more challenging for mechanical punching or laser drilling is limited by the size of machining tools or diameter of laser beams. Formation of noncircular micro patterns

  9. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the redistribution of interconnects in the underlying layers. Microvias are formed by mechanical drilling or laser

  10. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    embedded power source. These are positioned for instance inside a wall, a human body or in space, Noisy-le-Grand, France Abstract- This work relates to a novel piezoelectric transformer to be used of these autonomous devices must therefore be provided by the extern world. One can perform a transformation

  11. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . The efficiency has been investigated as function of fuel cell construction and tested for several load profiles of a galvanic cell, that produces hydrogen when Zn reacts with water. The system can be used as a battery cells has increased significantly. The main motivation underlying the development of micro fuel cells

  12. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Boyer, Edmond

    the deposition of nickel. Electroless nickel plating was successfully conducted at a rate of 0.39 µm /min plating for realization of high aspect patterns. The electroless nickel (EN) plating process is a popular. The ejected silver thin film was used as the seed layer for electroless nickel (EN) plating. EN plating

  13. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Boyer, Edmond

    in the 0.5-10 MHz frequency range are investigated. The performance of electrodeposited nickel-iron, cobalt

  14. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . A storage cell consists of two inverters that are placed in a loop configuration forms an electrically new storage mechanisms have been developed to build advanced memory module. Magnetoresistive RAM. Measuring the total electrical resistance of the layer stack provides the reading function. Ferroelectric

  15. 9-11 April 2008 EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for Temperature Measurement in R744 Air Conditioning Systems Sven Reitz1 , Andreas Schroth2 , Peter Schneider1 1

  16. Data:6648eda2-bf9d-4ea7-8032-842dc3476009 | Open Energy Information

    Open Energy Info (EERE)

    in part by a consumer-owned source of generation including but not limited to diesel, propane, wind or solar powered generators. The electric heating load must be 5-kW or larger...

  17. Data:C7735e1e-79ee-4eda-81fc-33856059e181 | Open Energy Information

    Open Energy Info (EERE)

    known: Rate name: Rural Sector: Residential Description: Source or reference: ISU Documentation (DOE Sharepoint) Source Parent: Comments Applicability Demand (kW) Minimum (kW):...

  18. A.M.B.E.R. Shark-Fin: An Unobtrusive Affective Mouse

    E-Print Network [OSTI]

    Kuncheva, Ludmila I.

    (Source) [21] Nacke EDA, EMG HalfLife2 Mod [26] Rani HR, EDA Pong [27] Saari User control knobs Generic

  19. The in vivo and in vitro effect of a fructooligosaccharide prebiotic combined with alfalfa molt diets on egg production and salmonella in laying hens 

    E-Print Network [OSTI]

    Donalson, Lisa Michelle

    2005-08-29T23:59:59.000Z

    Salmonellosis affects an estimated 1.4 million people a year with a great majority of cases never being reported. Salmonella Enteritidis (SE) can be found in a variety of foods including poultry meat and eggs. Susceptibility ...

  20. Mon. Not. R. Astron. Soc. 313, L9L13 (2000) Evidence for transverse spread in Leonid meteors

    E-Print Network [OSTI]

    Brown, Peter

    . LeBlanc,1w ² I. S. Murray,1 ³ R. L. Hawkes,1 P. Worden2 , M. D. Campbell,3 P. Brown,3 P. Jenniskens,4 and longitudinal spread in the fragments owing to a more complex fluid interaction (Brown et al. 1994

  1. METEORS WSDI: A Scalable P2P Infrastructure of Registries for Semantic Publication and Discovery of Web Services

    E-Print Network [OSTI]

    Miller, John A.

    of Web Services Kunal Verma, Kaarthik Sivashanmugam, Amit Sheth, Abhijit Patil, Swapna Oundhakar, John}@cs.uga.edu Abstract Web services are the new paradigm for distributed computing. They have much to offer towards interoperability of applications and integration of large scale distributed systems. To make Web services

  2. Budapest, Hungary, 17-19 September 2007 EDA Publishing/THERMINIC 2007 -page-ISBN: 978-2-35500-002-71

    E-Print Network [OSTI]

    Boyer, Edmond

    developing microfluidic systems for integrated microelectronics cooling devices. The design and functionality of micropumps play an integral role in the progress of microfluidic cooling technologies. EHD pumping micropump in cryogenic micro-cooling systems. Darabi and Rhodes [5] simulated the 2D ion-drag pumping

  3. Data:552fc369-7cf0-4f9c-b245-9fab3a11edae | Open Energy Information

    Open Energy Info (EERE)

    and multiple family dwellings. Source or reference: www.mytpu.orgcustomer-serviceratespower-ratespower-rates-schedules.htm Source Parent: Comments Applicability Demand...

  4. Data:D11d1bae-eda6-4585-b951-b2b528ae0089 | Open Energy Information

    Open Energy Info (EERE)

    Authority Effective date: 20140601 End date if known: Rate name: Outdoor Lighting Rates 400Watt Metal Halide Sector: Lighting Description: Source or reference: http:...

  5. Data:798defe8-d5f2-4afa-abe8-8604eda045f0 | Open Energy Information

    Open Energy Info (EERE)

    Irrigation Power Service is applicable to accounts where Member is using an electric motor to lift ground water for the purpose of irrigation. Billing Adjustments Subject to:...

  6. Data:Ba0f3eda-174c-4c9a-b225-2e529b0669d7 | Open Energy Information

    Open Energy Info (EERE)

    to keep this schedule or a similar schedule available to customers for a minimum of five years. If customer moves, both original and new customers have the option to retain...

  7. Data:F7b8506d-5d3e-4ce0-abc9-a4a383eda56e | Open Energy Information

    Open Energy Info (EERE)

    than 1000 kVA connected transformer capacity, delivered from the 12.57.2 or 24.914.4 kV distribution system. Power Factor Charge A power factor charge will be assessed to...

  8. Data:12a99515-0eda-4991-8ebe-b838e14266e0 | Open Energy Information

    Open Energy Info (EERE)

    heating system and devices which qualify the residence for service under the storage water heater provision, and to ascertain by any reasonable means that the...

  9. EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5 Low-Drift Flow Sensor with Zero-Offset

    E-Print Network [OSTI]

    Boyer, Edmond

    with an integrated Al/poly-Si++ thermopile in combination with up- and downstream Al heater resistors. The inherently in the heater resistors, eliminating inevitable influences of resistance drift and mismatch of the thin the thermopile by controlling a power difference between both heater resistors, thereby giving a measure

  10. Data:B1a90fc1-d6bf-4d41-86e8-5edae14aa134 | Open Energy Information

    Open Energy Info (EERE)

    Description: Source or reference: http:www.consumersenergy.comtariffs.nsfELECTRICTARIFFSBC92E05FDBD165C885257A28005E11D2FILEelerates.pdf?Open Source Parent: Comments...

  11. Data:8da44762-9c34-48f2-a9da-edae05479083 | Open Energy Information

    Open Energy Info (EERE)

    to the Power Cost Adjustment Clause. Source or reference: http:psc.wi.govapps40tariffsviewfile.aspx?typeelectric&id6490 Source Parent: Comments Applicability Demand...

  12. Data:D78e3c22-43c3-4eda-983c-2ac389a89d52 | Open Energy Information

    Open Energy Info (EERE)

    under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information...

  13. Data:7e97dfbf-00d9-41ed-a5a5-ec9743b90beb | Open Energy Information

    Open Energy Info (EERE)

    name: KEM Electric Coop Inc Effective date: End date if known: Rate name: Grain Drying Controlled - Single PhaseSubmeter Sector: Commercial Description: Available to all...

  14. Budapest, Hungary, 17-19 September 2007 EDA Publishing/THERMINIC 2007 -page-ISBN: 978-2-35500-002-7

    E-Print Network [OSTI]

    Boyer, Edmond

    high temperature problems. Wick structure with sintered powder presents: (Sintered powder) a. Anti-gravity

  15. Budapest, Hungary, 17-19 September 2007 EDA Publishing/THERMINIC 2007 -page-ISBN: 978-2-35500-002-7

    E-Print Network [OSTI]

    Boyer, Edmond

    and thermal properties of structural materials used in MEMS is essential for optimum geometric and functional design. The extraction of precise physical properties is rather complicated due to the size effects the thermal properties of silicon-nitride and diamond layers applied in thermal sensor structures by analyzing

  16. Rflexions sur le transfert mthodologique de l'analyse qualitative d'accidents de la circulation routire issue de l'tude dtaille des accidents (EDA) franaise aux

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    transfer for qualitative road accident analysis obtained from French Detailed Accident Studies (DAS the comprehensive accident analysis methodologies used in developed countries provide an understanding of the origin accident studies (DASs) and their adaptation to the analysis of accident reports. Colombia has

  17. Data:E7a06840-cc66-49ed-a27c-6540052ccea5 | Open Energy Information

    Open Energy Info (EERE)

    Industrial Off Peak Demand Sector: Industrial Description: Source or reference: ISU Documentation (DOE Sharepoint) Source Parent: Comments Applicability Demand (kW) Minimum (kW):...

  18. Data:1ef2f6f9-fc3d-4343-8a9c-46a36f108eda | Open Energy Information

    Open Energy Info (EERE)

    Day boost rate of .073kWh may apply Source or reference: Rate Binder Kelly 3 ISU Documentation Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW):...

  19. Effect of ethylenediamine on the electrodeposition of Ni-Fe alloys

    SciTech Connect (OSTI)

    Harris, T.M.; Wilson, J.L.; Bleakley, M. [Univ. of Tulsa, OK (United States). Dept. of Chemistry] [Univ. of Tulsa, OK (United States). Dept. of Chemistry

    1999-04-01T23:59:59.000Z

    Ethylenediamine (EDA) greatly affects the phenomenon of anomalous codeposition observed in the nickel-iron electrodeposition system. EDA increases the Ni/Fe ratio of the deposit when the bath is chloride based and the pH is at least 5. Ion microprobe analysis indicates that EDA is incorporated in the deposit. It is hypothesized that EDA adsorbs on the deposit surface and serves as a bridge for Ni{sup 2+} deposition in preference to that for Fe{sup 2+}, which forms less stable complexes with EDA. Chloride ion in the bath is necessary for the adsorption of EDA, and thus the relative increase in the nickel deposition rate.

  20. Dobbiamo desiderare il futuro MARIO CALABRESI

    E-Print Network [OSTI]

    Savaré, Giuseppe

    post bellico. Si trasferì a Milano e fece fortuna, ebbe molte idee originali ma non sarebbero state

  1. Andante q=80 Andante q=80

    E-Print Network [OSTI]

    Bird, Peter

    ness- a gainst- the heart, heat of her youth, Held f molt en- in hot dark ness- a gainst- heat of her- a gainst- the 52 V.S. S. A. T. B. Org. held molt ff en- in hot dark f ness- a gainst- the heart, mf con brio the heart, held ff molt en- in hot f dark ness- a gainst- the mf heart, con brio the heart, molt

  2. Paper 9.4, 2nd Conf. Environ. Appl., Long Beach, CA (8-12 January 2000), Amer. Meteor. Soc., 212-219.

    E-Print Network [OSTI]

    Doswell III, Charles A.

    -219. CLIMATOLOGICAL RISK OF STRONG AND VIOLENT TORNADOES IN THE UNITED STATES Peggy R. Concannon Northern Illinois for such individuals to under- stand the threat posed by tornadoes in the United States, particularly the threat- ble for the majority of deaths caused by tornadoes in the country, with violent tornadoes claiming 67

  3. March 2014aMErIcaN METEOrOLOGIcaL SOcIETY | 1 AFFILIATIONS: Archer And Veron--University of Delaware,

    E-Print Network [OSTI]

    topics were explored: 1) wind resource assessment; 2) wind power forecasting; and 3) turbulent wake equivalent wind speed and possible impacts on turbine power production. In European waters, designated these research needs for wind energy along the U.S. East Coast, both coastal and offshore, was the goal of a two

  4. NASA Marshall Space Flight Center (MSFC) -Automated Lunar and Meteor Observatory (ALaMO) -Candidate lunar impact observation database NASA Meteoroid Environment Office (MEO)

    E-Print Network [OSTI]

    Waliser, Duane E.

    .4 Newtonian T 119 StellaCam EX Sony GV-D800 MSFC 4487 Suggs and Swift http://science.nasa.gov/headlines/y2005.4 Newtonian T 119 StellaCam EX Sony GV-D800 MSFC ALAMO Moser and McNamara http 19.1 25.4 Newtonian T 119 StellaCam EX Sony GV-D800 MSFC ALAMO Swift, Hollon, & Altstatt 105 21-Jun

  5. January 2013aMErICan METEOrOLOGICaL SOCIETy | 25 AffiliAtions: KucharsKi and Farneti--The Abdus Salam

    E-Print Network [OSTI]

    Kang, In-Sik

    Korea; Feudale--OSMER Osservatorio Meteorologico Regionale dell'ARPA Friuli Venezia Giulia, Visco, Italy-siK Kang, and laura Feudale processes that allows realistic and fast climate simula

  6. Constraints on early Mars atmospheric pressure1 inferred from small ancient craters2

    E-Print Network [OSTI]

    Kite, Edwin

    , airblasts, meteors, and meteorites. The 201327 Chelyabinsk airburst exemplifies atmospheric destruction

  7. Energy Department awards $92 million http://www.eurekalert.org/pub_releases/2005-10/ddoe-eda100305.php 1 of 2 10/7/2005 1:19 PM

    E-Print Network [OSTI]

    Lovley, Derek

    and one private company. The grants are part of the Office of Science's Genomics: GTL research program in genomics research over the past 20 years now help allow scientists rapidly decode and interpret the complete DNA sequence of any organism. Because genomics reveals the blueprint for life, it is the starting

  8. Data:Cf9a88ed-a6a8-464b-bb9c-9a11291d8f7e | Open Energy Information

    Open Energy Info (EERE)

    to the established Service Rules and Regulations of the Corporation. Subject to wholesale power cost adjustment. Facilities Charge @ 75.0 per kVA of required transformer capacity...

  9. High-Speed Real-Time Digital Emulation for Hardware-in-the-Loop Testing of Power Electronics: A New Paradigm in the Field of Electronic Design Automation (EDA) for Power Electronics Systems

    E-Print Network [OSTI]

    Kinsy, Michel A.

    This paper details the design and application of a new ultra-high speed real-time simulation for Hardware-in-the-Loop (HiL) testing and design of high-power power electronics systems. Our real-time hardware emulation for ...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Local Government, Nonprofit, State Government Clean Energy Solutions Large Scale CHP and Fuel Cells Program The New Jersey Economic Development Authority (EDA) is offering...

  11. UNIVERSITE LIBRE DE BRUXELLES Faculte des Sciences Appliquees

    E-Print Network [OSTI]

    Libre de Bruxelles, Université

    ´ee 'Toch' No¨el, Arnaud 'Bill' Cl´eda and Nestor Holon-Wappers. 2 #12;List of Figures 2.1 Reinforcement

  12. Clean Energy Solutions Large Scale CHP and Fuel Cells Program

    Broader source: Energy.gov [DOE]

    The New Jersey Economic Development Authority (EDA) is offering grants for the installation of combined heat and power (CHP) or fuel cell systems to commercial, industrial, and institutional...

  13. CryoTEM (Tecnai) | EMSL

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

    MCM-41 supports (Cu(II)-EDA-SAMMS and... In Situ Live Cell Sensing of Multiple Nucleotides Exploiting DNARNA Aptamers and Graphene Oxide Nanosheets. Adenosine-5’-triph...

  14. Video observation of Geminids 2010 and Quadrantids 2011 by SVMN and CEMeNt

    E-Print Network [OSTI]

    Tóth, Jutaj; Kornoš, Leonard; Piffl, Roman; Koukal, Jakub; Gajdoš, Štefan; Majchrovi?, Ivan; Zigo, Pavol; Zima, Martin; Világi, Jozef; Kalman?ok, Dušan

    2011-01-01T23:59:59.000Z

    Since 2009 the double station meteor observation by the all-sky video cameras of the Slovak Video Meteor Network (SVMN) brought hundreds of orbits. Thanks to several amateur wide field video stations of the Central European Meteor Network (CEMeNt) and despite not an ideal weather situation we were able to observe several Geminid and Quadrantid multi-station meteors during its 2010 and 2011 maxima, respectively. The presented meteor orbits derived by the UFOOrbit software account a high precision of the orbital elements and are very similar to those of the SonotaCo video meteor database.

  15. Competing Models for the Timing of Cryogenian Glaciation: Evidence From the Kingston Peak Formation, Southeastern California

    E-Print Network [OSTI]

    Mrofka, David Douglas

    2010-01-01T23:59:59.000Z

    versus vadose meteoric diagenesis of limestones: evidence6 Figs. —, 1986, Limestone diagenesis - some geochemicalwith applications to carbonate diagenesis: Geochimica et

  16. Evolution of Neoproterozoic Wonoka-Shuram Anomaly-aged carbonates: Evidence from clumped isotope paleothermometry

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    meteoric diagenesis. Sedimentology 29, 797–817. Arthur,carbonate mineralogy. Sedimentology 22, 497–537. Sour-Tovar,

  17. OSP WEEKLY FUNDING BULLETIN Volume 4, Issue 38 27 September 2010

    E-Print Network [OSTI]

    Alabama in Huntsville, University of

    Horizon spill. By this announcement, EDA solicits applications for Economic Adjustment Assistance Oil Spill Supplemental Federal Funding Opportunity Solicitation No. EDAGULFOILSPILL09232010 CFDA No.gov/search/search.do?&mode=VIEW&oppId=58148 Purpose: Through this FY 2010 Gulf Oil Spill Supplemental Federal Funding Opportunity, EDA intends

  18. Cooperative Institute for Research in the Atmosphere College of ENGINEERING

    E-Print Network [OSTI]

    ,Steve Miller/ Chelyabinsk Meteor, White House Photo Office CIRA Magazine Contributors: Managing Editor: Mary Mc: Chelyabinsk Meteor 9 Scientific Life Abroad 12 AviationWeather.gov Website 16 A Visit with President Obama 18 February 15 (2013) when a large meteor hit outside of Chelyabinsk Oblast, Steve was busy scouring all

  19. Thompson, R. L., B. T. Smith, A. R. Dean, and P. T. Marsh, 2014: Spatial distributions of tornadic near-storm environments by convective mode. Electronic J. Severe Storms Meteor., 8 (5), 122.

    E-Print Network [OSTI]

    . SMITH, AND ANDREW R. DEAN NOAA/NWS/NCEP Storm Prediction Center, Norman, Oklahoma PATRICK T. MARSH* University of Oklahoma, Norman, Oklahoma (Submitted 19 February 2013; in final form 08 September 2013: NOAA/NWS/NCEP Storm Prediction Center, Norman, Oklahoma. ____________________ Corresponding author

  20. This document is a supplement to "How Well Do Coupled Models Simulate Today's Climate?," by Thomas Reichler and Junsu Kim (Bull.Amer. Meteor. Soc., 89, 303311) 2008 American Meteorological Society Corresponding author:Thomas

    E-Print Network [OSTI]

    Reichler, Thomas

    Atmosphere Ocean Reference Flux Adj. 01 BMRC BMRC1, Australia R21 (5.6 x 3.2), L9 5.6 x 3.2, L12 Power et al 1.5 x 1.5, L20 Schneider and Zhu 1998 X 06 CSIRO CSIRO, Australia R21 (5.6 x 3.2), L9 5.6 x 3.3, L21, Australia R21 (5.6 x 3.2), L17 5.6 x 3.2, L12 Colman 2001 H, W, sfc SW rad. b CCCM CCCma, CGCM1, Canada T32

  1. Epidural Analgesia Versus Patient-Controlled Analgesia for Pain Relief in Uterine Artery Embolization for Uterine Fibroids: A Decision Analysis

    SciTech Connect (OSTI)

    Kooij, Sanne M. van der, E-mail: s.m.vanderkooij@amc.uva.nl; Moolenaar, Lobke M.; Ankum, Willem M. [Academic Medical Centre, Department of Gynaecology (Netherlands)] [Academic Medical Centre, Department of Gynaecology (Netherlands); Reekers, Jim A. [Academic Medical Centre, Department of Radiology (Netherlands)] [Academic Medical Centre, Department of Radiology (Netherlands); Mol, Ben Willem J. [Academic Medical Centre, Department of Gynaecology (Netherlands)] [Academic Medical Centre, Department of Gynaecology (Netherlands); Hehenkamp, Wouter J. K. [VU University Medical Centre, Department of Gynaecology (Netherlands)] [VU University Medical Centre, Department of Gynaecology (Netherlands)

    2013-12-15T23:59:59.000Z

    Purpose: This study was designed to compare the costs and effects of epidural analgesia (EDA) to those of patient-controlled intravenous analgesia (PCA) for postintervention pain relief in women having uterine artery embolization (UAE) for systematic uterine fibroids. Methods: Cost-effectiveness analysis (CEA) based on data from the literature by constructing a decision tree to model the clinical pathways for estimating the effects and costs of treatment with EDA and PCA. Literature on EDA for pain-relief after UAE was missing, and therefore, data on EDA for abdominal surgery were used. Outcome measures were compared costs to reduce one point in visual analogue score (VAS) or numeric rating scale (NRS) for pain 6 and 24 h after UAE and risk for complications. Results: Six hours after the intervention, the VAS was 3.56 when using PCA and 2.0 when using EDA. The costs for pain relief in women undergoing UAE with PCA and EDA were Euro-Sign 191 and Euro-Sign 355, respectively. The costs for EDA to reduce the VAS score 6 h after the intervention with one point compared with PCA were Euro-Sign 105 and Euro-Sign 179 after 24 h. The risk of having a complication was 2.45 times higher when using EDA. Conclusions: The results of this indirect comparison of EDA for abdominal surgery with PCA for UAE show that EDA would provide superior analgesia for post UAE pain at 6 and 24 h but with higher costs and an increased risk of complications.

  2. Microplitis croceipes (Hymenoptera: Braconidae): A Life History Study and in vitro Rearing

    E-Print Network [OSTI]

    McLoud, Laura Ann

    2012-10-19T23:59:59.000Z

    . Three concentrations each of glucose, trehalose, and protein, as well as a combination diet (derived from initial diet trials) were tested. Growth, molting, and death were noted for each diet, and data indicated that diet had a significant effect...

  3. Improvements in in vitro rearing methods of Toxoneuron nigriceps (viereck) (Hymenoptera:Braconidae), a larval endoparasitoid of Heliothis virescens (Lepidoptera: Noctuidae)

    E-Print Network [OSTI]

    Kuriachan, Indira

    2006-08-16T23:59:59.000Z

    were incubated in the artificial rearing media. The growth (increase in length and width), development (molting), and survival of the incubated larvae were observed. Changes in osmotic pressure of the rearing media before and after incubation were...

  4. affect aggressive behavior: Topics by E-print Network

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

    molt induction in laying hens: the impact of alfalfa on physiology, immunology and behavior Texas A&M University - TxSpace Summary: displayed elevated non-nutritive pecking...

  5. CARACTERITZACI DE PLATAFORMES HW-SW PER A INTERACTIVITAT EN TV DIGITAL AMB MHP 1 Caracteritzaci de Plataformes HW-SW per a Interactivitat en TV

    E-Print Network [OSTI]

    Autònoma de Barcelona, Universitat

    així, des del punt de vista del consumidor de televisió, poc importa la tecnologia que hi ha al darrera-se moltes vegades a la tecnologia de consum. En aquest treball s'analitzen breument els punts crítics de la

  6. U.S. DEPARTMENT OF COMMERCE Fred erick B. Dent, Secretary

    E-Print Network [OSTI]

    , and Tanner Crabs; Chionoecetes bairdi, Robert M. Meyer 17 A Survey of Giant Clams, Tridacnidae, on Helen Reef on Molting Tanner Crabs, Chionoecetes bairdi, John F. Karinen and Stanley D. Rice Departments 38 NOAA

  7. New Jersey Business Growth Fund (New Jersey)

    Broader source: Energy.gov [DOE]

    Creditworthy small or mid-sized companies that are creating or retaining jobs in New Jersey can apply for financing through the New Jersey Business Growth Fund, a joint program of the EDA and PNC...

  8. Electrodermal activity and metamemory reports as predictors of memory retrieval

    E-Print Network [OSTI]

    Flesch, Marie H.

    2004-11-15T23:59:59.000Z

    Electrodermal activity (EDA), an indicator of arousal of the sympathetic nervous system, was investigated as a potential correlate of feeling-of-knowing (FOK) and tip-of-the-tongue (TOT) states. In Experiment 1, skin conductance was measured while...

  9. HandWave : design and manufacture of a wearable wireless skin conductance sensor and housing

    E-Print Network [OSTI]

    Strauss, Marc D

    2005-01-01T23:59:59.000Z

    This thesis report details the design and manufacture of HandWave, a wearable wireless Bluetooth skin conductance sensor, and dedicated housing. The HandWave collects Electrodermal Activity (EDA) data by measuring skin ...

  10. Towards a Cosmological Hubble Diagram for Type II-P Supernovae

    E-Print Network [OSTI]

    2006-01-01T23:59:59.000Z

    Supernova 1987A and other supernovae, ed. I. J. Danziger &I.A.U. Colloquium 192: Supernovae (10 years of SN1993J), ed.A. V. 2005, in 1604-2004: Supernovae as Cosmological Light-

  11. Energy limits on runaway electrons in tokamak plasmas J. R. Martin-Solisa)

    E-Print Network [OSTI]

    Martín-Solís, José Ramón

    runaway electrons in JET and the projected International Thermonuclear Experimental Reactor ITER ITER EDA International Thermonuclear Experi- mental Reactor ITER 1 where larger amounts of runaway electrons than those

  12. Scalable Analysis, Verification and Design of IC Power Delivery

    E-Print Network [OSTI]

    Zeng, Zhiyu

    2012-02-14T23:59:59.000Z

    Due to recent aggressive process scaling into the nanometer regime, power delivery network design faces many challenges that set more stringent and specific requirements to the EDA tools. For example, from the perspective of analysis, simulation...

  13. The biology and control of the southern corn rootworm Diabrotica undecimpunctata howardi Barber

    E-Print Network [OSTI]

    Daughdrill, Billy Hugh

    1958-01-01T23:59:59.000Z

    complete generation and sometimes a partial second in Nebraska, It was not until the advent of the chlorinated hydrocarbons that there was any effective insecticidal control of the southern porn root? worm, The early workers recommended various cultural... in Plate I s B. Immediately before each molt, the head cap? sule and anal shield are dark and considerably narrower than the body (Plate I, B, b, d, f,). Shortly after the larva hatches and infcnediately following each molt, the head and anal shield...

  14. Sandia National Laboratories: Research & Capabilities

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

    materials from which to ... Mark Boslough Featured in NOVA Special about the Chelyabinsk Meteor On April 3, 2013, in Capabilities, Computational Modeling & Simulation,...

  15. Sandia National Laboratories: modeling and simulation

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

    and simulation Sandian Mark Boslough Featured on NOVA Episode about Chelyabinsk Meteor On November 20, 2013, in Computational Modeling & Simulation, Modeling, Modeling, Modeling &...

  16. pRad | Movies

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

    Movies Studies of the Chelyabinsk Meteorite Sample With LANL Proton Radiography Chelyabinsk Meteorite Sample Chelyabinsk Meteor Sample The LANL Proton Radiography facility was used...

  17. Sandia National Laboratories: Modeling

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

    Mark Boslough Featured in NOVA Special about the Chelyabinsk Meteor On April 3, 2013, in Capabilities, Computational Modeling & Simulation, Modeling, Modeling, Modeling & Analysis,...

  18. Sandia National Laboratories: Modeling & Analysis

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

    Mark Boslough Featured in NOVA Special about the Chelyabinsk Meteor On April 3, 2013, in Capabilities, Computational Modeling & Simulation, Modeling, Modeling, Modeling & Analysis,...

  19. Sandia National Laboratories: Infrastructure Security

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

    impact of a potential ... Mark Boslough Featured in NOVA Special about the Chelyabinsk Meteor On April 3, 2013, in Capabilities, Computational Modeling & Simulation,...

  20. Sandia National Laboratories: Modeling & Analysis

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

    Sandian Mark Boslough Featured on NOVA Episode about Chelyabinsk Meteor On November 20, 2013, in Computational Modeling & Simulation, Modeling, Modeling, Modeling & Analysis,...

  1. Sandia National Laboratories: Modeling and Analysis

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

    Modeling and Analysis Sandian Mark Boslough Featured on NOVA Episode about Chelyabinsk Meteor On November 20, 2013, in Computational Modeling & Simulation, Modeling, Modeling,...

  2. almahata sitta meteorite: Topics by E-print Network

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

    44, Nr 12, 18371848 (2009) Physics Websites Summary: toroidal sporadic meteor source M. CAMPBELL-BROWN* and P. WIEGERT Department of Physics and Astronomy meteoroid sources helps...

  3. Preservation of an extreme transient geotherm in the Raft River...

    Open Energy Info (EERE)

    (DFluid -85) indicate the presence of meteoric fluids during detachment dynamics. Recrystallized grain-shape fabrics and quartz c-axis fabric patterns reveal a large...

  4. Compound and Elemental Analysis At Fenton Hill HDR Geothermal...

    Open Energy Info (EERE)

    interpretation of 36Cl- concentrations of the water samples measured by accelerator mass spectrometry (AMS). 36ClCl ratios indicate that deeply circulating meteoric waters derive...

  5. Isotopic Analysis- Fluid At Valles Caldera - Redondo Area (Rao...

    Open Energy Info (EERE)

    interpretation of 36Cl- concentrations of the water samples measured by accelerator mass spectrometry (AMS). 36ClCl ratios indicate that deeply circulating meteoric waters derive...

  6. Isotopic Analysis- Fluid At Fenton Hill HDR Geothermal Area ...

    Open Energy Info (EERE)

    interpretation of 36Cl- concentrations of the water samples measured by accelerator mass spectrometry (AMS). 36ClCl ratios indicate that deeply circulating meteoric waters derive...

  7. Isotopic Analysis- Fluid At Valles Caldera - Sulphur Springs...

    Open Energy Info (EERE)

    interpretation of 36Cl- concentrations of the water samples measured by accelerator mass spectrometry (AMS). 36ClCl ratios indicate that deeply circulating meteoric waters derive...

  8. Compound and Elemental Analysis At Valles Caldera - Sulphur Springs...

    Open Energy Info (EERE)

    interpretation of 36Cl- concentrations of the water samples measured by accelerator mass spectrometry (AMS). 36ClCl ratios indicate that deeply circulating meteoric waters derive...

  9. Initial Results from Drillholes PLV-1 and PLV-2 in the Western...

    Open Energy Info (EERE)

    irregular and isothermal intervals created by downward moving meteoric water through hard fractured lavas to a depth of 1800 feet. Below 1800 feet the temperature gradient abruptly...

  10. Evolution of Neoproterozoic Wonoka-Shuram Anomaly-aged carbonates: Evidence from clumped isotope paleothermometry

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    applications to carbonate diagenesis. Geochim. Cosmochim.L.A. , 2010. A burial diagenesis origin for the Ediacaranwith early meteoric diagenesis. Sedimentology 29, 797–817.

  11. Chemical And Isotopic Investigation Of Warm Springs Associated...

    Open Energy Info (EERE)

    water (high TDS, > 5000 mgl). Deviations from the meteoric water line are the result of rock-water isotopic exchange, mixing or evaporation. Fluid source regions and residence...

  12. Observations of Near-Earth Asteroids Impact Hazard to Earth

    E-Print Network [OSTI]

    Throop, Henry

    #12;Chelyabinsk, Russia 15 Feb 2013, 9h20 #12;Where did Chelyabinsk meteor come from? Path can be traced precisely using security videos and cell phone images! #12;What Do We Know About the Chelyabinsk-recorded meteor impact on Earth ! 50-100 meters, several times larger than Chelyabinsk #12;· #12;+Chelyabinsk

  13. (A-13-016-00) National Aeronautics and Space Administration

    E-Print Network [OSTI]

    Waliser, Duane E.

    . For example, in February 2013 an 18-meter (59 foot) meteor exploded 14.5 miles above the city of Chelyabinsk suggests that Chelyabinsk-type events occur every 30 to 40 years, with a greater likelihood of impact-Earth-Object Detection Workshop," January 25, 1992. Figure 1. Photograph of Chelyabinsk Meteor Source: AP Photo/AP Video

  14. NASA Chat: Stay `Up All Night' to Watch the Perseids! Experts Dr. Bill Cooke, Danielle Moser and Rhiannon Blaauw

    E-Print Network [OSTI]

    and Rhiannon Blaauw August 11, 2012 at the Moon. Victoria_C.: Because we pass through the cloud every year, does the amount of meteors decline. Victoria_C.: Why do meteors fall more on one night than different nights? Bill: On certain nights

  15. Earth Planets Space, 54, 265273, 2002 Iodine isotope ratios and halide concentrations in fluids

    E-Print Network [OSTI]

    Fehn, Udo

    is best preserved in the high-temperature fumaroles collected in 1998 and has a 129 I/I ratio of 756 ± 47 recent meteoric water from the fumarolic system after 1993. The acid hot springs on the flanks by mixing with old meteoric water and seawater. Fumarolic gases and hot spring waters were also analyzed

  16. -90 -60 -30 0 30 60 90 120 Lenght along the trajectory (km)

    E-Print Network [OSTI]

    Veres, Peter

    , especially when the precise all-sky reduction methods are used. Mobility The system is portable (weight of 6 and illumination of the sky. The network TheAMOS cameras systematically monitor meteor activity in the Slovak camera records about 10 000 meteors per year as well as about 50 transient luminous events (sprites

  17. Total System Performance Assessment: Enhanced Design Alternative V

    SciTech Connect (OSTI)

    N. Erb; S. Miller; V. Vallikat

    1999-07-08T23:59:59.000Z

    This calculation documents the total system performance assessment modeling of Enhanced Design Analysis (EDA) V. EDA V is based on the TSPA-VA base design which has been modified with higher thermal loading, a quartz sand invert, and line loading with 21 PWR waste packages that have 2-cm thick titanium grade 7 corrosion resistance material (CRM) drip shields placed over dual-layer waste packages composed of 'inside out' VA reference material (CRWMS M and O 1999a). This document details the changes and assumptions made to the VA reference Performance Assessment Model (CRWMS M and O 1998a) to incorporate the design changes detailed for EDA V. The performance measure for this evaluation is expected value dose-rate history. Time histories of dose rate are presented for EDA V and a Defense in Depth (DID) analysis base on EDA V. Additional details concerning the Enhanced Design Alternative II are provided in the 'LADS 3-12 Requests' interoffice correspondence (CRWMS M and O 1999a).

  18. Dual-Doppler analysis of the 17 June 1997 bow echo over southeast Texas

    E-Print Network [OSTI]

    Moncla, Kerry Louis

    2001-01-01T23:59:59.000Z

    , 1996: Role of gust front circulations in long-track severe straight-line winds. Preprints, 18' Conf. on Severe Local Storms, San Francisco, CA, Amer. Meteor. Soc. , 504-508. Biggerstaff, M. I. , J. Guynes, S. Hristova-Veleva, E-K Seo, B. Karl, Z... and Lightening Experiment ? TEXACAL 97. Preprints, 28th Conf. on Radar Meteor. , Austin, TX, Amer. Meteor. Soc. , 588-589. Burgess, D. W. , and B. F. Smull, 1990: Doppler radar observation of a bow echo associated with a long-track severe windstorm. Preprints...

  19. Dual-Doppler analysis of the 17 June 1997 bow echo over southeast Texas 

    E-Print Network [OSTI]

    Moncla, Kerry Louis

    2001-01-01T23:59:59.000Z

    , 1996: Role of gust front circulations in long-track severe straight-line winds. Preprints, 18' Conf. on Severe Local Storms, San Francisco, CA, Amer. Meteor. Soc. , 504-508. Biggerstaff, M. I. , J. Guynes, S. Hristova-Veleva, E-K Seo, B. Karl, Z... and Lightening Experiment ? TEXACAL 97. Preprints, 28th Conf. on Radar Meteor. , Austin, TX, Amer. Meteor. Soc. , 588-589. Burgess, D. W. , and B. F. Smull, 1990: Doppler radar observation of a bow echo associated with a long-track severe windstorm. Preprints...

  20. University Calendar, March 21, 2013

    E-Print Network [OSTI]

    2013-03-21T23:59:59.000Z

    of Art. "Building Buildings: A Cultural Geography of Ancient Maya Architecture in Guatemala.” Noon. 318 Bailey Hall. Free. Sponsored by Center for Latin American and Caribbean Studies. Call 785-864-4213. Seminar. "Report on the Chelyabinsk Meteor...

  1. Volume 2,no. 2 Spring 2015

    E-Print Network [OSTI]

    Malsbury, Havilliah

    2015-01-01T23:59:59.000Z

    The Rise and Fall of Airships Frank Ohnesorgen End of theThe Rise and Fall of Airships By Frank Ohnesorgen Thistells the story of airships’ meteoric rise in popularity

  2. Bounding the role of black carbon in the climate system: A scientific assessment

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    Airborn dust on Arctic pack ice, its composition and falloutThe influence of the Arctic pack ice on climate, Meteor.transfer in snow and ice packs and model choices that affect

  3. 4, 371398, 2007 Internal tides and

    E-Print Network [OSTI]

    Boyer, Edmond

    in the western part of the Canary Basin, halfway between the Canary Islands and the mid-Atlantic ridge fluxes are determined halfway over the southern slope of Great Meteor Seamount (Canary Basin), using data

  4. Diagenesis of Middle Tertiary carbonates in the Toa Baja Well, Puerto Rico

    E-Print Network [OSTI]

    Gonzalez, Luis A.; Ruiz, H. M.

    1991-03-01T23:59:59.000Z

    indicate that these carbonates were rapidly cemented in the marine environment (limiting compaction), that replacement of metastable carbonates by calcite and precipitation of sparry calcite took place mostly in meteoric diagenetic environments...

  5. 2012 Botany and Plant Pathology Publications Behrenfeld, Michael

    E-Print Network [OSTI]

    Grünwald, Niklaus J.

    , M. Yoder J.A.. Global ocean phytoplankton. In: State of the Climate in 2011. Bull. Amer. Meteor. Soc-auxin interaction facilitates root penetration in soil. Plant Signal. Behav. 7, 151-156. Jaiswal, Pankaj Rice

  6. Incorporation of particulates into accreted ice above subglacial Vostok lake, Antarctica 

    E-Print Network [OSTI]

    Siegert, M. J.; Royston-Bishop, G.; Priscu, J. C.; Tranter, M.; Christner, B.; Lee, V.

    2005-01-01T23:59:59.000Z

    The nature of microscopic particulates in meteoric and accreted ice from the Vostok (Antarctica) ice core is assessed in conjunction with existing ice-core data to investigate the mechanism by which particulates are ...

  7. Regional characteristics, timing, and significance of dissolution and collapse features in Lower Cretaceous carbonate platform strata, Desoto Canyon area, offshore Alabama-Florida 

    E-Print Network [OSTI]

    Iannello, Christine

    2001-01-01T23:59:59.000Z

    zones is only found above the Coniacian-Santonian unconformity. These relationships suggest a regional confined freshwater aquifer system developed within the Lower Cretaceous interval at about Coniacian-Santonian time when meteoric groundwater likely...

  8. Chemistry of spring and well waters on Kilauea Volcano, Hawaii...

    Open Energy Info (EERE)

    the chemistry of dilute meteoric water, mixtures with sea water,and thermal water. Data for well and spring samples of non-thermal water indicate that mixing with sea water...

  9. Evidence for a neuroendocrine hormone stimulating the respiration of a fat body mitochondria in the cockroach Blaberus discoidalis serville

    E-Print Network [OSTI]

    Waddill, Van Hulen

    1971-01-01T23:59:59.000Z

    ) The citations in the following pages conform to th tyl f Th J 1 f i ~ r ~Ph ' I y. which is thought to originate in the prothoracic glands (Fukuda, 1940) . Ecdysone is a steriod derivative o f cholesterol and stimulates molting and terminates diapause...

  10. Biology of the Ribbon Seal in Alaska National Marine Fisheries Service

    E-Print Network [OSTI]

    the front of the ice pack in late winter and spring (Burns 1981). They rely on sea ice to provide a platform in association with sea ice in Alaska; these are the ringed seal (Phoca hispida), spotted seal (P. largha weeks. Breeding and molting occur before the sea ice recedes (Burns 1981). The distribution of ribbon

  11. Biological characteristics of Uphausia superba dan in acoustically detected aggregations near Elephant Island, Antarctica

    E-Print Network [OSTI]

    Yeager, Marilyn Smith

    1994-01-01T23:59:59.000Z

    . , 1986), mating behavior (NAITo et al. , 1986) and molting stage (BucHHoLz, 1985). However, RIcKETTs et. al. (1992) argued that krill did not seem to form groups based solely on biological similarity (length, maturity, gender), but noted that krill...

  12. 15 th IMACS World Congress on Scientic Computation, Modelling and Applied Mathematics Volume 1, pp. 87{92

    E-Print Network [OSTI]

    Stöckler, Joachim

    analysis, a proper pretreatment of the spectral data is necessary. Usually, the high frequency noise Duisburg, Germany e­mail: molt@lims.uni­duisburg.de Keywords: wavelets, NIR­spectrometry, pretreatment no data preprocessing is necessary. INTRODUCTION The wavelet transform of spectral data can be a useful

  13. IMACS World Congress on Scienti c Computation, Modelling and Applied Mathematics Volume 1, pp. 87{92

    E-Print Network [OSTI]

    Stöckler, Joachim

    pretreatment of the spectral data is necessary. Usually, the high frequency noise is accompanied by low Duisburg, Germany e-mail: molt@lims.uni-duisburg.de Keywords: wavelets, NIR-spectrometry, pretreatment no data preprocessing is necessary. INTRODUCTION The wavelet transform of spectral data can be a useful

  14. MFR PAPER 1074 Effects of Prudhoe Bay Crude Oil on

    E-Print Network [OSTI]

    MFR PAPER 1074 Effects of Prudhoe Bay Crude Oil on Molting Tanner Crabs, Chionoecetes bairdi JOHN F bairdi , from Alaska walers were exposed 10 Prudhoe Bay crude oil in sIalic bioassays ill Ih e laboralory. Crabs in bOlh slages were similarly susceplible 10 crude oil; Ihe eSlimaled 48-hour TLIIl (Illedian

  15. Hillsborough County Cooperative Extension Service

    E-Print Network [OSTI]

    Jawitz, James W.

    of pesticides derived from such natural materials as animals, plants, microorganisms and certain minerals plant extracts and fatty acids in a water soluble liquid - said to disrupt the "root location mechanism with mating or molting, the process that insects use to shed their shell when they outgrow it. The products

  16. "Coneixements, usos i actituds lingstics entre l'estudiantat universitari". Serveis lingstics universitaris

    E-Print Network [OSTI]

    Geffner, Hector

    mòdul presenta informació específica dels estudiants de la UPF. L'estudi aplica tècniques quantitatives. A l'enquesta hi han participat 867 estudiants de la UPF, 397 dels quals han estat seleccionats per la mostra final. La participació a la UPF ha estat molt elevada en proporció a la seva xifra d

  17. ALLEGATO 1 CV GRAZIANO DRAGONI Relativamente ai progetti di Formazione tra le attivit pi significative

    E-Print Network [OSTI]

    Internet rivolto a circa 500 decision makers di PMI; - ho sviluppato molte altre iniziative formative sia nel quadro FSE (in particolare per il Trasferimento Tecnologico di contenuti a PMI), sia sulla Legge Lavoro, etc.). Tra i principali del settore pubblico: - progetto di consulenza per le PMI nel settore

  18. PUTTING KNOWLEDGE TO WORK The University of Georgia and Ft. Valley State College, the U.S. Department of Agriculture and counties of the state cooperating.

    E-Print Network [OSTI]

    Navara, Kristen

    that battery cages were to provide at least 72 square inches per bird and that hens were not to be molted program. The procedure to set up such a program could parallel that used to design a food safety HACCP or handling procedures are not carried out properly. Examples of animal care GMPs could be #12;house

  19. ENERGIA HIDROEL`ECTRICA Aprofitament de l'energia potencial gravitat`oria de les masses d'aigua

    E-Print Network [OSTI]

    Batiste, Oriol

    del sol. #12;Una quarta part de l'energia solar que incideix sobre la terra es consumeix en lENERGIA HIDROEL`ECTRICA Aprofitament de l'energia potencial gravitat`oria de les masses d molt r`apida. #12;LIMITACIONS I PROBLEMES Podem realment considerar-la una font energia apropiada? Les

  20. 1882 Anal. Chem. 1902, 64, 1682-1684 Analysis of Free Intracellular Nucleotides Using

    E-Print Network [OSTI]

    Zare, Richard N.

    1882 Anal. Chem. 1902, 64, 1682-1684 Analysis of Free Intracellular Nucleotides Using High rlbonucleotldes. The nucleotide profiles obtainedfrom peripheralbloodlymphocytesdifferfrom those obtalnedfrom Molt,322,1333-1339. intracellular nucleotides has been established,8*9ita main drawback is the lengthy analysis time, typically

  1. Investigadors de la UA patenten un mtode biotecnolgic que augmenta la producci i extracci de fitosterols

    E-Print Network [OSTI]

    Escolano, Francisco

    fitosterol és un compost d'origen vegetal que té una estructura química molt similar a la del colesterol, i diferència important a causa de la diferència estructural respecte del colesterol, ja que presenta importants beneficiosos per a la salut, especialment l'efecte hipocolesterolèmic, tant pel que fa al colesterol total com

  2. 16. stabilit a secondo Ljapunov 117 Capitolo 4. Analisi qualitativa del moto e stabilita

    E-Print Network [OSTI]

    Roma "La Sapienza", Università di

    dinamico, in generale non â??e possibile determinare analiticamente la soluzione per tutti i dati iniziali. Tuttavia molte proprietâ??a generali di un sistema dinamico possono essere studiate senza determinare soluzioni in una ristretta regione dello spazio in cui si svolge il moto; esempi sono il comportamento nelle

  3. A robust PCR method for high-dimensional regressors and Sabine Verboven

    E-Print Network [OSTI]

    (NMR), Ultra-Violet spectrometry (UV), Energy dispersive X-Ray Flu- orescence spectrometry (EDA robust PCR method for high-dimensional regressors Mia Hubert and Sabine Verboven Revised version, Belgium, sabine.verboven@ua.ac.be. 1 #12;A robust PCR method for high-dimensional regressors SHORT TITLE

  4. Draft, Nov. 20, 2000 forthcoming in Cartography and Geographic Information Science,Vol.28,No.1,2001 -1 RReesseeaarrcchh CChhaalllleennggeess iinn GGeeoovviissuuaalliizzaattiioonn

    E-Print Network [OSTI]

    Klippel, Alexander

    , analysis, synthesis, and presentation of geospa- tial data (any data having geospatial referenc- ing through visual exploration and analysis of geospatial data, along with the visual tools needed to enable computing (ViSC), cartography, image analysis, information visualization, ex- ploratory data analysis (EDA

  5. HELIUM COMPRESSOR MONITORING SYSTEM Donna Kubik

    E-Print Network [OSTI]

    HELIUM COMPRESSOR MONITORING SYSTEM Donna Kubik Arecibo Observatory #12;1 CONTENTS 1. Design goals 3 1.1 Features of the compressor monitoring system 4 2. EDAS: The basis of data acquisition 5 2 Compressor #1 Connectors Compressor #2 Connectors Compressor #3 Connectors Compressor #4 Connectors

  6. A Hybrid Estimation of Distribution Algorithm for CDMA Cellular System Design

    E-Print Network [OSTI]

    Zhang, Qingfu

    -stage hybrid approach built on estimation of distribution algorithms (EDAs), coupled with a K-means clustering-known K-means clustering and a simple local search algorithm. The first stage aims to find optimal or near, in comparison to SA. The rest of the paper is organized as follows. Section 2 describes the mathe- matical model

  7. Estimates of Energy Consumption by Building Type and End Use at U.S. Army Installations

    E-Print Network [OSTI]

    Konopacki, S.J.

    2010-01-01T23:59:59.000Z

    A C EUIs (cooling, ventilation, and gas heating). The annualCooling kWh/ft Ventilation kWh/ft Heating kBtu/ft CoolingMiscellaneous DOE-2 Ventilation kWh/ft Heating kBtu/ft EDA

  8. Kursplan fr lsret 2002/2003 FORTSTTNINGSKURS I OBJEKTORIENTERAD

    E-Print Network [OSTI]

    -oriented Programming, Second Course Antal poäng: 3. Betygskala: TH. Valfri för: K3, L3, M3. Kursansvarig: Roy Andersson, Roy.Andersson@cs.lth.se och Anna Axelsson, Anna.Axelsson@cs.lth.se. Förkunskapskrav: EDA501 användargränssnitt och applets. Litteratur Holm P.: Objektorienterad programmering och Java. Studentlitteratur, 1999

  9. 03-24-03 DRAFT 1 Copyright 2003 by ASME

    E-Print Network [OSTI]

    Radcliffe, Clark J.

    manufacturing firms who largely act as assemblers and (b) the development of reliable, high speed electronic such as integrated design and manufacture and just in time fabrication depend on interaction with and among component-EDA) software system uses a distributed, component-based, agent methodology that is realized following a strong

  10. An analysis of landlord-tenant resource contributions and division of product under leasing arrangements for irrigation farming in five years, Texas, 1957

    E-Print Network [OSTI]

    Mallett, James Irwin

    1962-01-01T23:59:59.000Z

    :;-. ''"''. ?, ', , ";:"", '": '. ::. ;;, . ;, ". ', 'css'e" bes'si j; g'o'g:. crdpg'bnd:Aor'ei'je& '5. ""Ar'eda. ; 'Tep'as", :. ' ' . , "; %Gf~t -'P. ; ?, " ' - ~, &,j. ;, . l6: . :Crspii =-Pr~. . Under -&:Cash ~ash-=:. D~sss -'" ' l7. . Parallel gfotston og seleoted Variable costs and Producttou 1...

  11. Evacuation Planning via Evolutionary Computation Aaron Garrett, Brian Carnahan, Rani Muhdi, Jerry Davis, Gerry Dozier,

    E-Print Network [OSTI]

    Garrett, Aaron

    , and an elitist EDA are used to evolve the placement of exits for two practical design problems. The algorithms are evaluated in terms of success rate, number of function evaluations, and best fitness. For both problems evacuation drills have strong similarities [1], evacuation drills still present signifi- cant ethical

  12. Prove scritte dell'esame di Analisi Matematica II a.a. 2012/2013

    E-Print Network [OSTI]

    Rubbioni, Paola

    (1, 1). 2. (10 punti) Data l'equazione differenziale y = 3y + y2 x , x = 0 a. determinare tutte le Cauchy `e definita. 3. (12 punti) Calcolare il volume della regione di spazio compresa tra le sfere S1 ed.a. 2012/2013 3 Chiaramente [0, 2] . Per determinare le limitazioni di individuiamo il raggio della

  13. Relationships among oils and water compositions in Niger delta

    SciTech Connect (OSTI)

    Dickey, P.A.; George, G.O.; Barker, C.

    1987-10-01T23:59:59.000Z

    In some fields of the Tertiary Niger delta of Nigeria, heavy, asphaltic oil is found in shallow reservoirs and light, waxy oil is found in deeper reservoirs in the same field. Both oils appears to have had the same source. The change with depth from heavy to light oil is usually abrupt and occurs at a reservoir temperature between 150/sup 0/ and 180/sup 0/F (66/sup 0/ and 82/sup 0/C). In other areas similar degradation of oil has been ascribed to bacteria brought into the oil reservoir by invading meteoric water. In Nigeria, meteoric water is low in dissolved solids and high in bicarbonate, whereas connate water is saltier and contains more chloride. Samples of both types of oil and associated water from six fields were analyzed and compared with previously acquired analyses from these fields. No clear relationship between meteoric water and degraded oil was found. Degraded oil may occur with either meteoric or connate water, and undegraded oil is sometimes found with meteoric water. This suggests extensive secondary migration of oil from one structure to another as well as deep penetration of meteoric water. 14 figures, 1 table.

  14. Covariances from light-element r-martix analyses

    SciTech Connect (OSTI)

    Hale, Gerald [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    We review the method for obtaining covariance information for light-element reactions using R-matrix theory. The general LANL R-matrix analysis code EDA provides accurate covariances for the resonance parameters at a solution due to the search algorithm it uses to find a local minimum of the chi-square surface. This information is used, together with analytically calculated sensitivity derivatives, in the first-order error propagation equation to obtain cross-section covariances for all reactions included in the analysis. Examples are given of the covariances obtained from the EDA analyses for n-p scattering and for the n+{sup 6}Li reactions used in the latest light-element standard cross section evaluation. Also discussed is a method of defining 'pure theory' correlations that could be useful for extensions to higher energies and heavier systems.

  15. ARM - Instrument - mpl

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006Datastreamstwrcam40m DocumentationJanuarygovInstrumentsirtgovInstrumentsmolts Documentation MOLTS :

  16. ARM - Instrument - mplcmask

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006Datastreamstwrcam40m DocumentationJanuarygovInstrumentsirtgovInstrumentsmolts Documentation MOLTS

  17. Intramolecular photo-induced electron transfer in a rigid anthracene-N, N-dimethylaniline system

    SciTech Connect (OSTI)

    Minsek, D.W.; Yang, N.C. Yang (Chicago Univ., IL (United States). Dept. of Chemistry); Niemczyk, M.P.; Svec, W.A.; Wasielewski, M.R. (Argonne National Lab., IL (United States))

    1992-01-01T23:59:59.000Z

    2-(N,N-Dimethylamino)-5, 14-ethanopentacene (1) was synthesized and spectroscopic behaviors investigated. Results suggest that 1 undergoes photoinduced electron transfer (PET) in solvents more polar than saturated hydrocarbons. The resulting charge-transfer (CT) state undergoes CT fluorescence efficiently in solvents of low dielectric constants. Fluorescence excitation studies of the CT emission reveal the existence of an EDA interaction in the ground state. The implications of these results are discussed.

  18. Intramolecular photo-induced electron transfer in a rigid anthracene-N, N-dimethylaniline system

    SciTech Connect (OSTI)

    Minsek, D.W.; Yang, N.C. Yang [Chicago Univ., IL (United States). Dept. of Chemistry; Niemczyk, M.P.; Svec, W.A.; Wasielewski, M.R. [Argonne National Lab., IL (United States)

    1992-12-31T23:59:59.000Z

    2-(N,N-Dimethylamino)-5, 14-ethanopentacene (1) was synthesized and spectroscopic behaviors investigated. Results suggest that 1 undergoes photoinduced electron transfer (PET) in solvents more polar than saturated hydrocarbons. The resulting charge-transfer (CT) state undergoes CT fluorescence efficiently in solvents of low dielectric constants. Fluorescence excitation studies of the CT emission reveal the existence of an EDA interaction in the ground state. The implications of these results are discussed.

  19. Integration, Verification and Layout of a Complex Multimedia SOC

    E-Print Network [OSTI]

    Chen, Chien-Liang; Lin, Youn-Long

    2011-01-01T23:59:59.000Z

    We present our experience of designing a single-chip controller for advanced digital still camera from specification all the way to mass production. The process involves collaboration with camera system designer, IP vendors, EDA vendors, silicon wafer foundry, package and testing houses, and camera maker. We also co-work with academic research groups to develop a JPEG codec IP and memory BIST and SOC testing methodology. In this presentation, we cover the problems encountered, our solutions, and lessons learned.

  20. Design Alternative Evaluation No. 3: Post-Closure Ventilation

    SciTech Connect (OSTI)

    Logan, R.C.

    1999-06-22T23:59:59.000Z

    The objective of this study is to provide input to the Enhanced Design Alternatives (EDA) for License Application Design Selection (LADS). Its purpose is to develop and evaluate conceptual designs for post-closure ventilation alternatives that enhance repository performance. Post-closure ventilation is expected to enhance repository performance by limiting the amount of water contacting the waste packages. Limiting the amount of water contacting the waste packages will reduce corrosion.

  1. Do homes that are more energy efficient consume less energy?: A structural equation model for England's residential sector

    E-Print Network [OSTI]

    Kelly, Scott

    for creating domestic load profiles. CDA is now widely recognised as a robust statistical method for estimating the load profiles of different household appliances without the need for individual appliance monitoring (Larsen & Nesbakken 2003; Aigner et al... . At the most basic level SEM’s are a type of factor analysis and can therefore be viewed as a form of exploratory data analysis (EDA) where the number of factors, factor loadings and rotation of the factor loading matrix are determined through exploratory...

  2. Hydrothermal synthesis, characterization and up/down-conversion luminescence of barium rare earth fluoride nanocrystals

    SciTech Connect (OSTI)

    Jia, Li-Ping; Zhang, Qiang [Department of Chemistry, Tongji University, Shanghai 200092 (China); State Key Laboratory of Pollution Control and Resource Reuse (Tongji University) (China); Yan, Bing, E-mail: byan@tongji.edu.cn [Department of Chemistry, Tongji University, Shanghai 200092 (China); State Key Laboratory of Pollution Control and Resource Reuse (Tongji University) (China)

    2014-07-01T23:59:59.000Z

    Graphical abstract: Lanthanide ions doped bare earth rare earth fluoride nanocrystals are synthesized by hydrothermal technology and characterized. The down/up-conversion luminescence of them are discussed. - Highlights: • Mixed hydrothermal system H{sub 2}O–OA (EDA)–O-A(LO-A) is used for synthesis. • Barium rare earth fluoride nanocrystals are synthesized comprehensively. • Luminescence for down-conversion and up-conversion are obtained for these systems. - Abstract: Mixed hydrothermal system H{sub 2}O–OA (EDA)–O-A(LO-A) is developed to synthesize barium rare earth fluorides nanocrystals (OA = oleylamine, EDA = ethylenediamine, O-A = oleic acid and LO-A = linoleic acid). They are presented as BaREF{sub 5} (RE = Ce, Pr, Nd, Eu, Gd, Tb, Dy, Y, Tm, Lu) and Ba{sub 2}REF{sub 7} (RE = La, Sm, Ho, Er, Yb). The influence of reaction parameters (rare earth species, hydrothermal system and temperature) is checked on the phase and shape evolution of the fluoride nanocrystals. It is found that reaction time and temperature of these nanocrystals using EDA (180 °C, 6 h) is lower than those of them using OA (220 °C, 10 h). The photoluminescence properties of these fluorides activated by some rare earth ions (Nd{sup 3+}, Eu{sup 3+}, Tb{sup 3+}) are studied, and especially up-conversion luminescence of the four fluoride nanocrystal systems (Ba{sub 2}LaF{sub 7}:Yb, Tm(Er), Ba{sub 2}REF{sub 7}:Yb, Tm(Er) (RE = Gd, Y, Lu)) is observed.

  3. The EIIIA domain from astrocyte-derived fibronectin mediates proliferation of oligodendrocyte progenitor cells following CNS demyelination

    E-Print Network [OSTI]

    Stoffels, Josephine M. J.; Hoekstra, Dick; Franklin, Robin J. M.; Baron, Wia; Zhao, Chao

    2014-08-25T23:59:59.000Z

    an alternative mechanism.This mechanism may involve other domains of Fn, since alternative splicing of Fn can change the conformation of Fn, affecting the presentation of binding sequences and exposing cryptic binding sites(Pickford and Campbell, 2004; Ventura... -EDA promotes survival and prevents adverse remodeling and heart function deterioration after myocardial infarction. Circ Res 108:582-592. Balza E, Sassi F, Ventura E, Parodi A, Fossati S, Blalock W, Carnemolla B, Castellani P, Zardi L, Borsi L (2009) A...

  4. GEOPHYSICAL RESEARCH LETTERS, VOL. 40, 15, doi:10.1002/grl.50683, 2013 Seismoacoustic coupling induced by the breakup of the 15 February

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    induced by the breakup of the 15 February 2013 Chelyabinsk meteor Benoit Tauzin,1 Eric Debayle,1 Cathy of Chelyabinsk, Russia. The rarity of such an event provides a unique window on the physics of meteoroid and injuries in Chelyabinsk. From the Rayleigh wave observations, we report a magnitude Ms 3.7 seismic source

  5. Astronomy & Astrophysics manuscript no. E1Cfin c ESO 2009 December 14, 2009

    E-Print Network [OSTI]

    Boyer, Edmond

    , Romania 4 University of Bucharest, Department of Physics, Platforma Magurele, Str. Fizicienilor nr. 1, CP Mg - 11, Bucharest-Magurele, 76900, Romania 5 The Romanian Society for Meteors and Astronomy (SARM), T^argovis¸te, Romania 6 Astronomical Observatory "Admiral Vasile Urseanu", Bd. Lascar Catargiu, nr

  6. Impact Crater ejecta blanket

    E-Print Network [OSTI]

    Jurdy, Donna M.

    , Australia Meteor Crater, Arizona #12;Venus as a Planet Diameter = 12,104 km Density = 5 2 g/cm3Density = 5C = 733 K = 860o F Ave. Distance from Sun = 81.08 x 108 km #12;Introduction: Venus Elevation, unimodal = -3.9 to 12 km Mostly flat plains with some topographic swells, volcanoes dune fields rift valleys

  7. Validating Atmospheric Reanalysis Data Using Tropical Cyclones as Thermometers James P. Kossin

    E-Print Network [OSTI]

    Kossin, James P.

    1 Validating Atmospheric Reanalysis Data Using Tropical Cyclones as Thermometers James P. Kossin 2014; accepted 15 October 2014) If you would like to cite the Early Online Release in a separate work tropical cyclones as thermometers. Bull. Amer. Meteor. Soc. doi:10.1175/BAMS-D-14-00180, in press. Capsule

  8. 1837 The Meteoritical Society, 2009. Printed in USA. Meteoritics & Planetary Science 44, Nr 12, 18371848 (2009)

    E-Print Network [OSTI]

    Wiegert, Paul

    toroidal sporadic meteor source M. CAMPBELL-BROWN* and P. WIEGERT Department of Physics and Astronomy meteoroid streams. The activity of each source varies through the year (Campbell-Brown and Jones 2006, University of Western Ontario, London, ON, Canada *Corresponding author. E-mail: margaret.campbell

  9. Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind Y. I. An updated empirical climatic zonally aver- aged prevailing wind model for the upper mesosphere/ lower of monthly mean winds from meteor radar and MF radar measurements at more than 40 stations, well distributed

  10. The sodium tail of the Moon M. Matta a,b,*, S. Smith a,1

    E-Print Network [OSTI]

    Mendillo, Michael

    The sodium tail of the Moon M. Matta a,b,*, S. Smith a,1 , J. Baumgardner a,1 , J. Wilson a,1 , C was discovered soon after the 1998 Leonid meteor shower (Smith et al., 1999). On 19 November 1998, an all

  11. MST14/iMST1 First Announcement

    E-Print Network [OSTI]

    -situ studies, and relevant modeling efforts will all be welcome. Contributed and invited talks, signal processing, and quality control 5) Meteor studies and observations 6) MST scattering, micro scatter radars (e.g. radars/forecast models, radars/lidars, radars/in situ (rockets or satellites), radars

  12. MST14/iMST1 Deadline for Abstract submission is February 14, 2014

    E-Print Network [OSTI]

    and other instruments like lidars and in-situ studies, and relevant modeling efforts will all be welcome instruments, signal processing, and quality control. 6. Meteor studies and observations. 7. Middle Atmosphere include MST radars, wind profilers and ionospheric coherent scatter radars (e.g. radars/forecast models

  13. STRATOSPHERIC PROCESSES AND THEIR ROLE IN CLIMATE

    E-Print Network [OSTI]

    Deshler, Terry

    .4.1 Carbonyl sulfide (OCS) 36 2.4.2 Sulfur Dioxide (SO2) 52 2.4.3 Dimethyl sulfide (CH3SCH3) 60 2.4.4 Other Disulfide Fluxes 71 2.5.7 Meteors, cosmic radiation, and rocket exhaust 71 2.5.8 Isotopic studies 74 2

  14. Chemical, multi-isotopic (Li-B-Sr-U-H-O) and thermal characterization of Triassic formation waters from the Paris Basin

    E-Print Network [OSTI]

    Boyer, Edmond

    of around 45 to 50°C. The study of uranium activity ratios for these Triassic formation waters allows us with water essentially resulting from a seawater-derived brine endmember diluted by meteoric waters. The data, uranium isotopes, oxygen isotopes, hydrogen isotopes, geothermometry, Trias, Paris Basin 1 hal-00563924

  15. Annales Geophysicae (2001) 19: 425434 c European Geophysical Society 2001 Geophysicae

    E-Print Network [OSTI]

    Boyer, Edmond

    waves, such as planetary scale Rossby waves, and by changes in solar irradiance and high energy particle in solar UV irradiance and geomagnetic activity. Changes in the altitude of the mean meteor layer observed, as measured by the CUT- LASS Finland radar, in the days preceding and following a Storm Sudden Commencement

  16. Compact Ultradense Objects in the Solar System

    E-Print Network [OSTI]

    J. Rafelski; Ch. Dietl; L. Labun

    2013-03-19T23:59:59.000Z

    We describe properties and gravitational interactions of meteor-mass and greater compact ultra dense objects with nuclear density or greater (CUDO s). We discuss possible enclosure of CUDO s in comets, stability of these objects on impact with the Earth and Sun and show that the hypothesis of a CUDO core helps resolve issues challenging the understanding of a few selected cometary impacts.

  17. Multispectral Remote Sensing

    E-Print Network [OSTI]

    Gilbes, Fernando

    module Propulsion module Power module #12;12 Components of the Landsat 4 and 5 Thematic Mapper #12 are Transformed into Useful Information #12;2 Aqua Terra TRMM SeaWiFS Aura Meteor/ SAGE GRACE ICESat Cloudsat;9 Orbit Tracks of Landsat 1, 2, or 3 During A Single Day of Coverage Components of the Landsat

  18. Atmos. Chem. Phys., 6, 267282, 2006 www.atmos-chem-phys.org/acp/6/267/

    E-Print Network [OSTI]

    Boyer, Edmond

    (an.engel@meteor.uni-frankfurt.de) spheric loss) and from CO2 (whose mesospheric loss is much smaller evidence from a model study using the KASIMA (KArl- sruhe SImulation model of the Middle Atmosphere) model properties. Some observations show that air can also descend from the meso- sphere into the polar

  19. Carbonate stromatolites from a Messinian hypersaline setting in the Caltanissetta Basin, Sicily: petrographic evidence of

    E-Print Network [OSTI]

    Riding, Robert

    by calcite or black amorphous matter; and (iii) micrite in which fenestrae alternate with dark thin wispy in normal to slightly evaporative conditions, occasionally influenced by an influx of meteoric water) emphasized the relationship between carbonate precipitation and organic matter enrichment in heterotrophic

  20. The Origin of Life Darwin (1871)

    E-Print Network [OSTI]

    Goldschmidt, Christina

    to undergo still more complex changes, at the present day such matter would be instantly devoured still: Carbon based Necessitates presence of fluid water & solid core. Stability for Billions of Years: Size Distance from Sun Big Moon No comet/meteor storm, i.e large outer planets. Alternatives: Dark Side

  1. Utrecht University Masters Thesis

    E-Print Network [OSTI]

    Northern British Columbia, University of

    's renewable freshwater and is also one of the top world producers of metals like uranium, gold and zinc countries. As one of the top world producers of metals and minerals, e.g. uranium, nickel, aluminum precipitation. Since meteoric water is depleted of oxygen by the time it reaches the water table, this area

  2. Re nement of Iterative Constructs in the B Method Ludmila Klenov

    E-Print Network [OSTI]

    Pierre, Laurence

    Laurence.Pierre@cmi.univ-mrs.fr Rapport de Recherche LIM 368 Octobre 2001 Abstract In this report, we focus@esil.univ-mrs.fr Laurence Pierre LIM - CMI/Universit#19;e de Provence 39, Rue Joliot-Curie 13453 Marseille cedex 13 - France and GEC Alsthom Transport, reported their experience with B in the METEOR project (automatic subway) [2

  3. UNCORRECTEDPROOF 1 Towards deterministic downscaling of SMOS soil moisture using MODIS derived soil

    E-Print Network [OSTI]

    Boyer, Edmond

    of environmental applications including meteor- 33 ology, hydrology, water resource management and climatology. 34UNCORRECTEDPROOF 1 Towards deterministic downscaling of SMOS soil moisture using MODIS derived soil Kerr b 4 a Civil and Environmental Engineering, The University of Melbourne, Australia 5 b Centre d

  4. Regional groundwater flow paths in Trans-Pecos, Texas inferred from oxygen,

    E-Print Network [OSTI]

    Banner, Jay L.

    isotopes Matthew M. Uliana a,*, Jay L. Banner b , John M. Sharp Jr. b a Department of Earth and hydrogen, oxygen, and strontium isotopes. dD and d18 O values fall close to the global meteoric water line in the alluvial fill at the upgradient end of the flow system. ª 2006 Elsevier B.V. All rights reserved. 0022

  5. The biology of the sunflower moth, Homoeosoma electellum (Hulst)

    E-Print Network [OSTI]

    Baxter, Michael Celus

    1976-01-01T23:59:59.000Z

    of the sunflower moth have been reported in the literature. Drake and Harris (1926) stated that sunflower moths live for a few days during the summer. They described the egg as small, elon- gate, and yellowish. Moths deposit them singly or in groups of 4 or 5... within or among the corolla tubes of the individual florets. Drake and Harris (1926) determined that the female moth lays 30 or more eggs in a lifetime, that the larva feeds 12 or 14 days, molts 4 or 5 times, and remains in the pupal stage for about 6...

  6. External Parasites of Cattle.

    E-Print Network [OSTI]

    Price, Manning A.; Hamman, Philip J.; Newton, Weldon H.

    1969-01-01T23:59:59.000Z

    ............................................................ ...................................................................... House Fly Manning A. Price Philip J. Hamman Weldon H. Newton* No OTHER CATTLE MENACE is as common as that of insect, tick and mite parasites. These pests probably cause greater losses than all infectious diseases combined. Losses are rather insidious... on the head and neck. They are active all during the year, but are more prevalent during late winter and spring. After engorgement is completed, usually 4y2 to 7 days, the nymph leaves the host and seeks a molting place similar to that chosen by larvae...

  7. Page 1 of 1 NWPPC. 1990. Protected areas summary and response to comments (90-10; Supp. C). FR01: !D'f-O FISH 8. GFr'E TO: J~ 5, 1'3'30 3: 5Cf'M lI63! P. W

    E-Print Network [OSTI]

    : !D'f-O FISH 8. GFr'E TO: J~ 5, 1'3'30 3: 5Cf'M lI63! P. W Applicant: Representing: Addras: City: Prat: 170501110 Dl.1QQ. p() JDb"stTD Co,ts O1rrent Value 1L Q ~ed~ae 3 'n,'jq; . Q ~ 3 · Pi 'oct"''' CDdIa Coda M b, C. M ' . A ~ JI1Ih ~ · Belid8llt FiR u4 WIk!IIr. C Ara' III _ l_daDI _ WIIcIIIf. J) Mad III

  8. Use of ethylenediamine to remove hydrogen sulfide from coke oven gas

    SciTech Connect (OSTI)

    Marakhovskii, L.F.; Popov, A.A.; Rezunenko, Yu.I.

    1983-01-01T23:59:59.000Z

    The investigations of the equilibrium absorption of H/sub 2/S by an EDA solution which show that the solubility of hydrogen sulfide in ethylenediamine solutions is almost twice that in monoethanolamine solutions. Ethylenediamine may be used as an absorber for thorough removal of H/sub 2/S from coke oven gas in the presence of CO/sub 2/ and HCN. The hydrogen cyanide of coke oven gas, having practically no effect on the equilibrium absorption of H/sub 2/S and CO/sub 2/, may in this case be recovered in the form of ethylenethiourea - a marketable byproduct.

  9. The use of ethylenediamine to remove hydrogen sulfide from coke oven gas

    SciTech Connect (OSTI)

    Marakhovskii, L.F.; Rezunenko, Y.I.; Popov, A.A.

    1983-01-01T23:59:59.000Z

    The investigations of the equilibrium absorption of H/sub 2/S by an EDA solution showed the solubility of hydrogen sulfide in ethylenediamine solutions is almost twice that in monoethanolamine solutions. Ethylenediamine may be used as an absorber for thorough removal of H/sub 2/S from coke oven gas in the presence of CO/sub 2/ and HCN. The hydrogen cyanide of coke oven gas, having practically no effect on the equilibrium absorption of H/sub 2/S and CO/sub 2/, may in this case be used in the form of ethylenethiourea - a marketable byproduct.

  10. ITI Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | OpenHunan Runhua New EnergyIT Power Limited Jump to:ITI Energy EDA

  11. Reservoir characters of the Ypresian carbonates, Western Libyan Offshore, Central Mediterranean Sea

    SciTech Connect (OSTI)

    Mriheel, I.Y. [Petroleum Research Centre, Tripoli (Libyan Arab Jamahiriya)

    1995-08-01T23:59:59.000Z

    Significant hydrocarbon accumulations have been discovered in Western Libyan offshore in the Ypresian carbonate reservoirs of Jdeir Formation and Jirani Dolomite. The discoveries of hydrocarbons are mainly in structural traps where the Jdeir nummulitic facies and Jirani dolomitic facies B have been structured by salt domes or underlying positive fault blocks. This study investigates the relationship between environments of deposition, diagenesis and reservoir characters of the two main hydrocarbon producing units of the Jdeir and Jirani formations. Petrographic and petrophysical studies indicate that porosity in the Jirani Dolomite is related to diagenesis in meteoric environments, while in the Jdeir reservoir is the result of the environment of deposition and diagenesis. Excellent reservoir porosity of Jdeir nummulitic facies and Jirani dolomitic facies B is related to diagenesis in meteoric water during exposure to subaerial conditions which is considered to be due to lowering of sea level and possibly local uplifting.

  12. Bimodal Distribution of Sulfuric Acid Aerosols in the Upper Haze of Venus

    E-Print Network [OSTI]

    Gao, Peter; Crisp, David; Bardeen, Charles G; Yung, Yuk L

    2013-01-01T23:59:59.000Z

    The upper haze (UH) of Venus is variable on the order of days and it is populated by two particle modes. We use a 1D microphysics and vertical transport model based on the Community Aerosol and Radiation Model for Atmospheres to evaluate whether interaction of upwelled cloud particles and sulfuric acid particles nucleated in situ on meteoric dust are able to generate the two size modes and whether their observed variability are due to cloud top vertical transient winds. Nucleation of photochemically produced sulfuric acid onto polysulfur condensation nuclei generates mode 1 cloud droplets that then diffuse upwards into the UH. Droplets generated in the UH from nucleation of sulfuric acid onto meteoric dust coagulate with the upwelled cloud particles and cannot reproduce the observed bimodal size distribution. The mass transport enabled by cloud top transient winds are able to generate a bimodal size distribution in a time scale consistent with observations. Sedimentation and convection in the middle and lower...

  13. Depositional and diagenetic history of the Upper Jurassic Haynesville Formation, Teague Townsite Field, Freestone County, Texas

    E-Print Network [OSTI]

    Faucette, Robert Christian

    1981-01-01T23:59:59.000Z

    . Skeletal grains are less common. Constituent composition and textural data were grouped into seven microfacies. These microfacies are grouped into th~ee deposi- tional environments. These environments are the shallow sublittoral agitated marine sand... coarse, mosaic, subsurface calcite spar cement. The reservoir produces from the intragranular porosity created by meteoric leaching in freshwater lenses. ACKNOWLEDGEMENTS I would like to thank the chairman of my advisory committee, Dr. Wayne M. Ahr...

  14. Stable isotope variations in Late Pennsylvanian brachiopods from cyclic sedimentary deposits: paleoenvironmental and diagenetic implications

    E-Print Network [OSTI]

    Adlis, David Scott

    1986-01-01T23:59:59.000Z

    and 3. 6'/w, respectively. This combination of lighter isotopic values and higher concentrations of iron and manganese suggest meteoric diagenetic alteration of the prismatic shell layer, whereas the interior of the fibrous layer is judged... to calcite recrystallization, results in a change in texture, often on a very fine scale. Bulk composition does not change, but trace element concentration and isotopic ratios of the recrystallized calcite may be quite different. The large orthorhombic...

  15. Geologic history of the Pettet Zone of the Sligo formation at Lisbon Field, Claiborne Parish, Louisiana

    E-Print Network [OSTI]

    Ford, James Patrick

    1985-01-01T23:59:59.000Z

    and eroded rubble deposits at the top of each shoal denotes upward shoaling to the point of emergence. Basinward of the shoals were the open marine, diverse skeletal mudstones and wackestones, and an open marine lagoon was present shoreward of the shoals... final relative sea-leve! rise ended the third shoal cycle, and open marine muddy limestones were deposited over the area. Diagenetic alteration in the meteoric phreatic environment occur- red during several episodes of partial ooid shoal emergence...

  16. Environmental isotope and geochemical investigation of groundwater in Big Bend National Park, Texas 

    E-Print Network [OSTI]

    Lopez Sepulveda, Hector Javier

    1984-01-01T23:59:59.000Z

    composition. Rock dissolution experiments aided in the interpretation of groundwater chemistries. The groundwater flow in the Rio Grar. de Village area consists of a meteoric origin groundwater in a slow and deep circulation process. THe grcundwater age... 10 J. O 11 15 METHODS. Field Methods Laboratorv Methods. 20 20 24 RESULTS AND DISCUSSION 27 Hydrochemical Isotopic. Rock Dissolution Chemistrv. 32 64 94 CONCLUSION 99 Panther Junction Area Rio Grande Village Area 99 100...

  17. Controlling Non-Covalent Interactions to Modulate the Dispersion of Fullerenes in Polymer Nanocomposites

    SciTech Connect (OSTI)

    Sumpter, Bobby G [ORNL

    2011-01-01T23:59:59.000Z

    Polymer nanocomposites (PNCs) are materials based on a class of filled plastics that contain relatively small amounts of nanoparticles, which can impart improved structural, mechanical, and thermal properties relative to the neat polymer. However, the homogeneous dispersion of the nanoparticles into a polymer matrix is critical and an impeding factor for the controlled enhancement of PNC properties. In this work, we provide new insight into the importance of polymer chain connectivity and nanoparticle shape and curvature on the formation of noncovalent electron donor-acceptor (EDA) interactions between polymers and nanoparticles. This is accomplished by experimentally monitoring the dispersion of nanoparticles in copolymers containing varying amounts of functional moieties that can form noncovalent interactions with carbon nanoparticles with corroboration through density functional calculations. The results show that the presence of a minority of interacting functional groups within a polymer chain leads to an optimum interaction between the polymer and fullerene. Density functional theory calculations that identify the binding energy and geometry of the interaction between the functional monomers and fullerenes correspond very well with the experimental results. Moreover, comparison of these results to similar studies with single-walled carbon nanotubes (SWNT) indicate a distinct difference in the ability of EDA interactions to improve the dispersion of fullerenes relative to their impact on SWNT. Thus, the polymer chain connectivity, the polymer chain conformation, and size and shape of the nanoparticle modulate the formation of intermolecular interactions and directly impact the dispersion of the resultant nanocomposite.

  18. Controlling Non-Covalent Interactions to Modulate the Dispersion of Fullerenes in Polymer Nanocomposites

    SciTech Connect (OSTI)

    Linton, Dias [ORNL; Dadmun, Mark D [ORNL; Sumpter, Bobby G [ORNL; Teh, Say-Lee [ORNL

    2011-01-01T23:59:59.000Z

    Polymer nanocomposites (PNCs) are materials based on a class of filled plastics that contain relatively small amounts of nanoparticles, which can impart improved structural, mechanical, and thermal properties relative to the neat polymer. However, the homogeneous dispersion of the nanoparticles into a polymer matrix is critical and an impeding factor for the controlled enhancement of PNC properties. In this work, we provide new insight into the importance of polymer chain connectivity and nanoparticle shape and curvature on the formation of noncovalent electron donoracceptor (EDA) interactions between polymers and nanoparticles. This is accomplished by experimentally monitoring the dispersion of nanoparticles in copolymers containing varying amounts of functional moieties that can form noncovalent interactions with carbon nanoparticles with corroboration through density functional calculations. The results show that the presence of a minority of interacting functional groups within a polymer chain leads to an optimum interaction between the polymer and fullerene. Density functional theory calculations that identify the binding energy and geometry of the interaction between the functional monomers and fullerenes correspond very well with the experimental results. Moreover, comparison of these results to similar studies with single-walled carbon nanotubes (SWNT) indicate a distinct difference in the ability of EDA interactions to improve the dispersion of fullerenes relative to their impact on SWNT. Thus, the polymer chain connectivity, the polymer chain conformation, and size and shape of the nanoparticle modulate the formation of intermolecular interactions and directly impact the dispersion of the resultant nanocomposite.

  19. WHB/WTB SPACE PROGRAM ANALYSIS FOR SITE RECOMMENDATION

    SciTech Connect (OSTI)

    W.D. Lindholm

    2000-05-25T23:59:59.000Z

    The purpose of this analysis is to identify and evaluate the functional space and spatial relationship requirements for the two main nuclear buildings, the Waste Handling Building (WHB) and the Waste Treatment Building (WTB), which are part of the Repository Surface Facilities. This analysis is consistent with the Development Plan for ''WHB/WTB Space Program Analysis for Site Recommendation'' (CRWMS M&O 2000r), which concentrates on the primary, primary support, facility support, and miscellaneous building support areas located in the WHB and WTB. The development plan was completed in accordance with AP-2.134, ''Technical Product Development Planning''. The objective and scope of this analysis is to develop a set of spatial parameters (e.g., square footage, room heights, etc.) and layout requirements (e.g., adjacency and access/circulation requirements, etc.) from which preliminary building floor plans are developed and presented as figures. The resulting figures will provide information to support the Site Recommendation and the total system life cycle cost. This analysis uses the Viability Assessment (VA) ''Surface Nuclear Facilities Space Program Analysis'' (SPA) (CRWMS M&O 1997c) as the baseline reference document and further develops the functional requirements based on Project-directed changes, including incorporation of a new design basis waste stream and the applicable elements of Enhanced Design Alternative (EDA)-II, as identified in the ''License Application Design Selection Report'' (CRWMS M&O 1999e), which followed the initial SPA (baseline). The impacts of the EDA-II were almost entirely to the WHB. To meet the EDA-II thermal requirements, hotter fuel would be handled, therefore requiring a fuel-blending pool to be added to the WHB in order to age the hotter he1 at the repository and provide for commercial spent nuclear fuel (CSNF) blending. In addition to EDA-II recommendations, the waste stream was modified, including the elimination of approximately 300 multi-purpose canisters from the CSNF schedule. The bases for the Monitored Geologic Repository (MGR) surface design changes, as a result of the waste stream changes, are defined in ''Calculations from Surface Facilities Operations in Support of the Revision to the Waste Quantity, Mix, and Throughput Study'' (CRWMS M&O 2000c, Section 2.4). This effort resulted in a reduction in the number of canister transfer lines from 2 to 1. In addition, as indicated in ''WITNESS Model Input for Thermal Blending of Commercial Spent Nuclear Fuel Assemblies'' (CRWMS M&O 19991), the quantity of dual-purpose canisters (DPCs) assumed to be shipped to the repository has been reduced by about 37 percent. This change resulted in a reduction of the number of Assembly Transfer System (ATS) lines in the WHB from 3 to 2. In summary, this analysis is intended to provide a preliminary level of design showing room square footages and heights associated with the WHB and WTB. These spatial dimensions are anticipated to increase or decrease as the design progresses.

  20. Reducible Poly(amido ethylenimine)s for Nucleic Acid Delivery

    E-Print Network [OSTI]

    Christensen, Lane

    2006-10-26T23:59:59.000Z

    is reduced 1 2 4 8 16 32 64 -50 -25 0 25 50 EDA/CBA DETA/CBA TETA/CBA n = 5 ? SEM w/DTT w/w Z e t a P o t e n t i a l ( m V ) Bioconjugate Chemistry (2006) 17; 1233-1240. 1 2 3 4 5 6 7 8 9 10 11 12 13 14... in fluorescence #1; Due to reducible disulfide bonds? 12 0 50 250 500 1.0?10 07 1.0?10 08 1.0?10 09 1.0?10 10 SS-PAED bPEI mM BSO R L U / m g P r o t e i n Effect on the Presence of GSH Inhibitor DL -Buthionine Sulfoxamine (BSO) ? BSO decreases intracellular GSH...

  1. Improved user interface design for site selection modeling system

    SciTech Connect (OSTI)

    Koffman, L.D. [Westinghouse Savannah River Site, Aiken, SC (United States)

    1996-12-31T23:59:59.000Z

    The Site Selection Modeling System (SSMS) is a customized application within the Environmental Data Atlas (EDA), which is an integrated geographic information system (GIS) for environmental applications at the Savannah River site (SRS) developed jointly by the Environmental Sciences Section (ESS) of Westinghouse Savannah River Company and by the University of South Carolina (USC). The SSMS was developed to assist analysts with site selection activities carried out by the ESS and is a powerful tool with a graphical user interface that allows non-GIS analysts to use the application. However, use of the SSMS in recent siting exercises revealed deficiencies in the user interface as a production tool. This paper specifies user interface design criteria necessary for a production application and describes the implementation of these design criteria in the SSMS.

  2. Electrochemical hydrogen permeation studies of several mono- and diamines

    SciTech Connect (OSTI)

    Al-Janabi, Y.T.; Lewis, A.L. [Saudi Aramco, Dhahran (Saudi Arabia). Lab. Research and Development Center; Oweimreen, G.A. [King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia). Dept. of Chemistry

    1995-09-01T23:59:59.000Z

    The combined presence of moisture and hydrogen sulfide, known in the oil industry as a sour environment, enhances corrosion reactions at a metal surface as well as promotes the entry of hydrogen atoms, resulting from these reactions, into the metal. Increased entry of hydrogen atoms increases the probability of occurrence of hydrogen-induced cracking. The objective of this study is to evaluate the ability of several organic amines to inhibit the overall process of hydrogen entry and to relate their inhibition abilities to their molecular structures. The diffusion coefficients for the permeation of hydrogen atoms through steel estimated in this study using the time-lag and Laplace methods are of the same order of magnitude as those in the published literature. In several hydrogen permeation curves, a characteristic hump was observed. The authors propose that this hump is due to the trapping of hydrogen at sites other than voids and microvoids. The electrochemical system was also sued to study the effectiveness of diethanolamine (DEA), morpholine (MOR), triethanolamine (TEA), ethylenediamine (EDA), and hexamethylene diamine (HMDA) in inhibiting the entry of hydrogen atoms into steel. The diamines were found to be more effective than the monoamines. A nonlinear relationship was observed between the inhibition effectiveness and the concentration of the amines studied. The inhibiting abilities of the monoamines were similar at the high concentration limit (0.01 M) but followed the trend TEA > MOR > DEA at the low concentration limit (5 {times} 10{sup {minus}5} M). For the diamines the inhibiting abilities were also similar at the high concentration limit (5 {times} 10{sup {minus}3} M) and followed the trend HMDA > EDA at the low concentration limit (5 {times} 10{sup {minus}5} M).

  3. The Castaways

    E-Print Network [OSTI]

    Dodge, Mary Louise

    1977-01-01T23:59:59.000Z

    cabin. Spock fired all his re serves in a vital effort to slow, felt the ship shudder with effort, then flina itself against gravity, hard. a Then they were braking, their descent still faster than safety advised, but no longer in danger of meteoric... about you. In any other than a Vulcan I would have thought it a considerable pride in his son." "You surprise me," Spock said mildly. "I hope pleasantly, because I want to ask a favor. I'd like you to accompany me at the concert I'm to give aboard...

  4. Spectroscopy of a \\kappa-Cygnid fireball afterglow

    E-Print Network [OSTI]

    Madiedo, José M

    2015-01-01T23:59:59.000Z

    A bright fireball with an absolute magnitude of -10.5 $\\pm$ 0.5 was recorded over the South of Spain on August 15, 2012. The atmospheric trajectory, radiant and heliocentric orbit of this event are calculated. These data show that the parent meteoroid belonged to the \\kappa-Cygnid meteoroid stream. The emission spectrum of this bolide, which was obtained in the wavelength range between 350 and 800 nm, suggests a chondritic nature for the progenitor meteoroid. Besides, the spectrum of the meteoric afterglow was also recorded for about 0.7 seconds. The evolution with time of the intensity of the main emission lines identified in this signal is discussed.

  5. Geothermal potential of West-Central New Mexico from geochemical and thermal gradient data

    SciTech Connect (OSTI)

    Levitte, D.; Gambill, D.T.

    1980-11-01T23:59:59.000Z

    To study the low temperature and Hot Dry Rock (HDR) geothermal potential of west-central New Mexico, 46 water samples were collected and geothermal gradient measurements were made in 29 wells. Water chemistry data indicate that all the samples collected are meteoric waters. High temperatures of samples taken from wells between Gallup and Tohatchi indicate these wells may derive water from a warm aquifer below the depth of the wells. The chemistries of the samples farther south on the Zuni Indian reservation suggest these waters are not circulating below 600 m of the surface. Geothermometry calculations support the conclusion that the waters sampled are meteoric. The geothermometry also indicates that the deep reservoir between Gallup and Tohatchi may be greater than 60/sup 0/C. Thermal gradient data indicate an area of high gradient on the Zuni Indian Reservation with a measured maximum of 67/sup 0/C/km between 181 m and 284 m. This high probably is not hydrologically controlled. The maximum gradients in the study area are 76/sup 0/C/km and 138/sup 0/C/km, measured just east of Springerville, Arizona. These gradients are undoubtedly controlled by circulating water, possibly heated by a magmatic source at depth and circulating back to the surface.

  6. Porosity prediction in sandstones using erosional unconformities

    SciTech Connect (OSTI)

    Shanmugam, G.

    1989-03-01T23:59:59.000Z

    Erosional unconformities of subaerial origin are created by tectonic uplifts and eustatic sea level fall. Most erosional unconformities developed on sandstones are planes of increased porosity because uplifted sandstones are exposed to undersaturated CO/sub 2/-charged meteoric waters that result in dissolution of unstable framework grains and cements. The chemical weathering of sandstones is intensified in humid regions by the heavy rainfall, soil zones, lush vegetation, and accompanying voluminous production of organic and inorganic acids. Erosional unconformities are considered hydrologically open systems because of abundant supply of fresh meteoric water and relatively unrestricted transport of dissolved constituents away from the site of dissolution, causing a net gain in porosity near unconformities. Thus, porosity in sandstones tends to increase toward overlying unconformities. Such porosity trends have been observed in hydrocarbon-bearing sandstone reservoirs in Alaska, Algeria, Australia, China, Libya, Netherlands, Norwegian North Sea, Norwegian Sea, and Texas. A common attribute of these reservoirs is that they were all subaerially exposed under heavy rainfall conditions. An empirical model has been developed for the Triassic and Jurassic sandstone reservoirs in the Norwegian North Sea on the basis of the observed relationship that shows an increase in porosity in these reservoirs with increasing proximity to the overlying base of Cretaceous unconformity. An important practical attribute of this model is that it allows for the prediction of porosity in the neighboring undrilled areas by recognizing the base of Cretaceous unconformity in seismic reflection profiles and by constructing subcrop maps.

  7. REDUCING RISK IN LOW-PERMEABILITY GAS FORMATIONS: UNDERSTANDING THE ROCK/FLUID CHARACTERISTICS OF ROCKY MOUNTAIN LARAMIDE BASINS

    SciTech Connect (OSTI)

    Ronald C. Surdam

    2003-12-29T23:59:59.000Z

    An anomalous velocity model was constructed for the Wind River Basin (WRB) based on {approx}2000 mi of 2-D seismic data and 175 sonic logs, for a total of 132,000 velocity/depth profiles. Ten cross sections were constructed through the model coincident with known gas fields. In each cross section, an intense, anomalously slow velocity domain coincided with the gas-productive rock/fluid interval. The anomalous velocity model: (1) Easily isolates gas-charged rock/fluid systems characterized by anomalously slow velocities and water-rich rock/fluid systems characterized by normal velocities; and (2) Delineates the regional velocity inversion surface, which is characterized by steepening of the Ro/depth gradient, a significant increase in capillary displacement pressure, a significant change in formation water composition, and acceleration of the reaction rate of smectite-to-illite diagenesis in mixed-layer clays. Gas chimneys are observed as topographic highs on the regional velocity inversion surface. Beneath the surface are significant fluid-flow compartments, which have a gas-charge in the fluid phase and are isolated from meteoric water recharge. Water-rich domains may occur within regional gas-charged compartments, but are not being recharged from the meteoric water system (i.e., trapped water). The WRB is divided into at least two regionally prominent fluid-flow compartments separated by the velocity inversion surface: a water-dominated upper compartment likely under strong meteoric water drive and a gas-charged, anomalously pressured lower compartment. Judging from cross sections, numerous gas-charged subcompartments occur within the regional compartment. Their geometries and boundaries are controlled by faults and low-permeability rocks. Commercial gas production results when a reservoir interval characterized by enhanced porosity/permeability intersects one of these gas-charged subcompartments. The rock/fluid characteristics of the Rocky Mountain Laramide Basins (RMLB) described in this work determine the potential for significant, relatively unconventional, so-called ''basin-center'' hydrocarbon accumulations. If such accumulations occur, they will be characterized by the following critical attributes: (1) Location beneath a regional velocity inversion surface that typically is associated with low-permeability lithologies; (2) Anomalous pressure, both over- and underpressure, and when, less commonly, they appear to be normally pressured, they are not in contact with the meteoric water system; (3) A significant gas component in the regional multiphase fluid-flow system (water-gas-oil) that occurs beneath the regional velocity inversion surface; (4) Domains of intense gas charge (i.e., high gas saturation) within the regional multiphase fluid-flow system; (5) Compartmentalization of the rock/fluid system to a far greater extent beneath the regional velocity inversion surface than above it (i.e., convection of fluids across the regional velocity inversion surface is reduced or eliminated depending on the nature of the capillary properties of the low-permeability rocks associated with the inversion surface); (6) Commercial gas accumulations occurring at the intersection of reservoir intervals characterized by enhanced porosity and permeability and gas-charged domains; (7) Productive intersections of reservoir intervals and gas-charged domains, which are controlled by the structural, stratigraphic, and diagenetic elements affecting the rock/fluid system; and (8) No apparent meteoric water connection with the gas accumulations and gas columns up to several thousand feet in height. Because some of these critical attributes are not associated with conventional hydrocarbon accumulations, a new set of diagnostic tools are required in order to explore for and exploit these types of gas prospects efficiently and effectively. Some of these new diagnostic tools have been discussed in this report; other have been described elsewhere. In order to maximize risk reduction, it is recommended when exploring for these types of gas accu

  8. Plasma confinement regimes and collective modes characterizing them

    SciTech Connect (OSTI)

    Coppi, B.; Zhou, T. [Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

    2012-10-15T23:59:59.000Z

    A unified theory is presented for the modes that are excited at the edge of the plasma column and are important signatures of the advanced confinement regimes into which magnetically confined plasmas can be driven. In particular, the so-called EDA H-Regime, the Elmy H-Regime, and the I-Regime are considered. The modes that are identified theoretically have characteristics that are consistent with or have anticipated those of the modes observed experimentally for each of the investigated regimes. The phase velocities, the produced transport processes, the frequencies, the wavelengths, and the consistency with the direction of spontaneous rotation are the factors considered for comparison with the relevant experiments. The quasi-coherent mode [I. Cziegler, Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge, MA, 2011] that is present in the EDA H-Regime has a phase velocity in the direction of the ion diamagnetic velocity in the plasma reference frame. Consequently, this is identified as a ballooning mode near finite Larmor radius marginal stability involving the effects of transverse ion viscosity and other dissipative effects. In this regime, impurities are driven outward by the combined effects of the local temperature gradients of the impurities and their thermal conductivity, while in the Elmy H-Regime impurities are driven toward the center of the plasma column. In the I-Regimes, the excited 'Heavy Particle' modes [B. Coppi and T. Zhou, Phys. Plasmas 19, 012302 (2012); Phys. Lett. A 375, 2916 (2011)] are not of the ballooning kind and are shown to expel the impurities toward the plasma edge in the presence of significant fluctuations. These modes can have a finite frequency of oscillation with a phase velocity in the direction of the electron diamagnetic velocity or they can be nearly purely growing, explaining why there are I-Regimes where fluctuations are not observed. Instead, the modes considered for the Elmy H-Regime are of the ballooning kind. They are driven by the combined effects of the plasma pressure gradient and the magnetic field curvature, are close to conditions under which the acquired growth rates are proportional to half power of the relevant dissipation parameters, involve the effects of finite magnetic diffusivity and finite electron thermal conductivity, and can have phase velocities in either direction.

  9. MJ no more: Using Concurrent Wikipedia Edit Spikes with Social Network Plausibility Checks for Breaking News Detection

    E-Print Network [OSTI]

    Steiner, Thomas; Summers, Ed

    2013-01-01T23:59:59.000Z

    We have developed an application called Wikipedia Live Monitor that monitors article edits on different language versions of Wikipedia, as they happen in realtime. Wikipedia articles in different languages are highly interlinked. For example, the English article en:2013_Russian_meteor_event on the topic of the February 15 meteoroid that exploded over the region of Chelyabinsk Oblast, Russia, is interlinked with the Russian article on the same topic. As we monitor multiple language versions of Wikipedia in parallel, we can exploit this fact to detect concurrent edit spikes of Wikipedia articles covering the same topics, both in only one, and in different languages. We treat such concurrent edit spikes as signals for potential breaking news events, whose plausibility we then check with full-text cross-language searches on multiple social networks. Unlike the reverse approach of monitoring social networks first, and potentially checking plausibility on Wikipedia second, the approach proposed in this paper has th...

  10. Instabilities during liquid migration into superheated hydrothermal systems

    SciTech Connect (OSTI)

    Fitzgerald, Shaun D.; Woods, Andrew W.

    1995-01-26T23:59:59.000Z

    Hydrothermal systems typically consist of hot permeable rock which contains either liquid or liquid and saturated steam within the voids. These systems vent fluids at the surface through hot springs, fumaroles, mud pools, steaming ground and geysers. They are simultaneously recharged as meteoric water percolates through the surrounding rock or through the active injection of water at various geothermal reservoirs. In a number of geothermal reservoirs from which significant amounts of hot fluid have been extracted and passed through turbines, superheated regions of vapor have developed. As liquid migrates through a superheated region of a hydrothermal system, some of the liquid vaporizes at a migrating liquid-vapor interface. Using simple physical arguments, and analogue laboratory experiments we show that, under the influence of gravity, the liquid-vapor interface may become unstable and break up into fingers.

  11. Analysis of Moon impact flashes detected during the 2012 and 2013 Perseids

    E-Print Network [OSTI]

    Madiedo, José M; Organero, Faustino; Ana-Hernández, Leonor; Fonseca, Fernando; Morales, Nicolás; Cabrera-Caño, Jesús

    2015-01-01T23:59:59.000Z

    We present the results of our Moon impact flashes detection campaigns performed around the maximum activity period of the Perseid meteor shower in 2012 and 2013. Just one flash produced by a Perseid meteoroid was detected in 2012 because of very unfavourable geometric conditions, but 12 of these were confirmed in 2013. The visual magnitude of the flashes ranged between 6.6 and 9.3. A luminous efficiency of 1.8 $\\times$ 10$^{-3}$ has been estimated for meteoroids from this stream. According to this value, impactor masses would range between 1.9 and 190 g. In addition, we propose a criterion to establish, from a statistical point of view, the likely origin of impact flashes recorded on the lunar surface.

  12. Dynamics of a geothermal field traced by noble gases: Cerro Prieto, Mexico

    SciTech Connect (OSTI)

    Mazor, E. (Weizmann Inst. of Science, Rehovot, Israel); Truesdell, A.H.

    1981-01-01T23:59:59.000Z

    Noble gases have been measured mass spectrometrically in samples collected during 1977 from producing wells at Cerro Prieto. Positive correlations between concentrations of radiogenic (He, /sup 40/Ar) and atmospheric noble gases (Ne, Ar, and Kr) suggest the following dynamic model: the geothermal fluids originated from meteoric water penetrated to more than 2500 m depth (below the level of first boiling) and mixed with radiogenic helium and argon-40 formed in the aquifer rocks. Subsequently, small amounts of steam were lost by a Raleigh process (0 to 3%) and mixing with shallow cold water occurred (0 to 30%). Noble gases are sensitive tracers of boiling in the initial stages of 0 to 3% steam separation and complement other tracers, such as Cl or temperature, which are effective only beyond this range.

  13. OT 060420: A Seemingly Optical Transient Recorded by All-Sky Cameras

    E-Print Network [OSTI]

    Lior Shamir; Robert J. Nemiroff

    2006-07-03T23:59:59.000Z

    We report on a ~5th magnitude flash detected for approximately 10 minutes by two CONCAM all-sky cameras located in Cerro Pachon - Chile and La Palma - Spain. A third all-sky camera, located in Cerro Paranal - Chile did not detect the flash, and therefore the authors of this paper suggest that the flash was a series of cosmic-ray hits, meteors, or satellite glints. Another proposed hypothesis is that the flash was an astronomical transient with variable luminosity. In this paper we discuss bright optical transient detection using fish-eye all-sky monitors, analyze the apparently false-positive optical transient, and propose possible causes to false optical transient detection in all-sky cameras.

  14. Petroleum geology of Benue trough and southeastern Chad basin, Nigeria

    SciTech Connect (OSTI)

    Petters, S.W.; Ekweozor, C.M.

    1982-08-01T23:59:59.000Z

    Cretaceous cyclic sedimentation in the southern Benue trough, together with unconformities, provide a tripartite subdivision of the sedimentary succession into (1) the Albian Asu River Group, (2) the late Cenomanian to early Santonian Cross River Group (new name) and interfingering marginal marine sandstones, and (3) the post-Santonian coal measures sequence. Most of the Albian to Eocene marine shales in the Benue trough and the Turonian shales in the southern Chad basin contain well over 0.5% total organic carbon, with values of up to 7.4% in Turonian anaerobic shales. Based on the high content of soluble organic matter, thermal maturity, and the predominantly terrigenous character of the Late Cretaceous shales, mostly natural gas was probably generated in both basins. The late Santonian folding and uplift would have disrupted petroleum reservoirs. Also, crude oil accumulations which were not dissipated by tectonism would be relocated at relatively shallow depths and hence become accessible to invading meteoric waters.

  15. The Coupling of the Numerical Heat Transfer Model of the Pauzhetka Hydrothermal System (Kamchatka, USSR) with Hydroisotopic Data

    SciTech Connect (OSTI)

    Kiryukhin, A.V.; Sugrobov, V.M.

    1986-01-21T23:59:59.000Z

    The application of the two-dimensional numerical heat-transfer model to the Pauzhetka hydrothermal system allowed us to establish that: (1) a shallow magma body with the anomalous temperature of 700-1000 C and with a volume of 20-30 km{sup 3} may be a heat source for the formation of the Pauzhetka hydrothermal system. (2) The water feeding source of the Pauzhetka hydrothermal system may be meteoric waters which are infiltrated at an average rate of 5-10 kg/s {center_dot} km{sup 2}. The coupling of the numerical heat-transfer model with hydroisotopic data (D,T,{sup 18}O) obtained from the results of testing of exploitation wells, rivers and springs is the basis to understand more clearly the position of recharge areas and the structure of water flows in the hydrothermal system.

  16. Field Deployment of Prototype Antenna Tiles for the Mileura Widefield Array--Low Frequency Demonstrator

    E-Print Network [OSTI]

    Judd D. Bowman; David G. Barnes; Frank H. Briggs; Brian E. Corey; Merv J. Lynch; N. D. Ramesh Bhat; Roger J. Cappallo; Sheperd S. Doeleman; Brian J. Fanous; David Herne; Jacqueline N. Hewitt; Chris Johnston; Justin C. Kasper; Jonathon Kocz; Eric Kratzenberg; Colin J. Lonsdale; Miguel F. Morales; Divya Oberoi; Joseph E. Salah; Bruce Stansby; Jamie Stevens; Glen Torr; Randall Wayth; Rachel L. Webster; J. Stuart B. Wyithe

    2006-12-01T23:59:59.000Z

    Experiments were performed with prototype antenna tiles for the Mileura Widefield Array--Low Frequency Demonstrator (MWA-LFD) to better understand the widefield, wideband properties of their design and to characterize the radio frequency interference (RFI) between 80 and 300 MHz at the site in Western Australia. Observations acquired during the six month deployment confirmed the predicted sensitivity of the antennas, sky-noise dominated system temperatures, and phase-coherent interferometric measurements. The radio spectrum is remarkably free of strong terrestrial signals, with the exception of two narrow frequency bands allocated to satellite downlinks and rare bursts due to ground-based transmissions being scattered from aircraft and meteor trails. Results indicate the potential of the MWA-LFD to make significant achievements in its three key science objectives: epoch of reionziation science, heliospheric science, and radio transient detection.

  17. Apollo asteroids (1566) Icarus and 2007 MK6: Icarus family members?

    E-Print Network [OSTI]

    K. Ohtsuka; H. Arakida; T. Ito; T. Kasuga; J. Watanabe; D. Kinoshita; T. Sekiguchi; D. J. Asher; S. Nakano

    2007-08-22T23:59:59.000Z

    Although it is more complicated to search for near-Earth object (NEO) families than main belt asteroid (MBA) families, since differential orbital evolution within a NEO family can cause current orbital elements to drastically differ from each other, we have found that Apollo asteroids (1566) Icarus and the newly discovered 2007 MK6 are almost certainly related. Specifically, their orbital evolutions show a similar profile, time shifted by only ~1000 yr, based on our time-lag theory. The dynamical relationship between Icarus and 2007 MK6 along with a possible dust band, the Taurid-Perseid meteor swarm, implies the first detection of an asteroidal NEO family, namely the "Icarus asteroid family".

  18. Environmental resources of selected areas of Hawaii: Groundwater in the Puna District of the Island of Hawaii

    SciTech Connect (OSTI)

    Staub, W.P.; Reed, R.M.

    1995-03-01T23:59:59.000Z

    This report has been prepared to make available and archive the background scientific data and related information collected on groundwater during the preparation of the environmental impact statement (EIS) for Phases 3 and 4 of the Hawaii Geothermal Project (HGP) as defined by the state of Hawaii in its April 1989 proposal to Congress. The US Department of Energy (DOE) published a notice in the withdrawing its notice of intent of February 14, 1992, to prepare the HGP EIS. Since the state of Hawaii is no longer pursuing or planning to pursue the HGP, DOE considers the project to be terminated. The background scientific data and related information presented in this report were collected for the geothermal resource subzones in the Puna District on the island of Hawaii. The scientific background data and related information is being made available for use by others in conducting future scientific research in these areas. This report describes the environmental resources present in the areas studied and does not represent an assessment of environmental impacts. This paper summarizes the current state of knowledge with respect to groundwater in the Puna District of the island of Hawaii. Groundwater quality in and adjacent to Kilauea`s east rift zone (KERZ), is compared with that of meteoric water, seawater, and geothermal fluid. Two segments of KERZ lie within the Puna District. These segments are the middle east rift zone (KERZ) and lower east rift zone (LERZ). The degree of mixing between meteoric water, seawater, and geothermal water in and adjacent to the also is discussed.

  19. Benchmarking FENDL libraries through analysis of bulk shielding experiments on large SS316 assemblies for verification of ITER shielding characteristics

    SciTech Connect (OSTI)

    Youssef, M.Z.; Kumar, A.; Abdou, M.A. [Univ. of California, Los Angeles, CA (United States); Konno, Chikara; Maekawa, Fujio; Wada, Masayuki; Oyama, Yukio; Maekawa, Hiroshi; Ikeda, Yujiro [Japan Atomic Energy Research Inst., Ibaraki (Japan)

    1996-12-31T23:59:59.000Z

    FENDL-1 data base has been developed recently for use in ITER/EDA phase and other fusion-related design activities. It is now undergoing extensive testing and benchmarking using experimental data of differential and integral measured parameters obtained from fusion-oriented experiments. As part of co-operation between UCLA (U.S.) with JAERI (Japan) on executing the required neutronics R&D tasks for ITER shield design, two bulk shielding experiments on large SS316 assemblies were selected for benchmarking FENDL/MG-1 multigroup data base and FENDL/MC-1 continous energy data base. The analyses with the multigroup data (performed with S8, P5, DORT calculations with shielded and unshielded data) also included library derived from ENDF/B-VI data base for comparison purposes. The MCNP Monte Carlo code was used by JAERI with the FENDL/MC-1 data. The results of this benchmarking is reported in this paper along with the observed deficiencies and discrepancies. 20 refs., 27 figs., 1 tab.

  20. EQ6 Calculations for Chemical Degradation of Navy Waste Packages

    SciTech Connect (OSTI)

    S. LeStrange

    1999-11-15T23:59:59.000Z

    The Monitored Geologic Repository Waste Package Operations of the Civilian Radioactive Waste Management System Management & Operating Contractor (CRWMS M&O) performed calculations to provide input for disposal of spent nuclear fuel (SNF) from the Navy (Refs. 1 and 2). The Navy SNF has been considered for disposal at the potential Yucca Mountain site. For some waste packages, the containment may breach (Ref. 3), allowing the influx of water. Water in the waste package may moderate neutrons, increasing the likelihood of a criticality event within the waste package. The water may gradually leach the fissile components and neutron absorbers out of the waste package. In addition, the accumulation of silica (SiO{sub 2}) in the waste package over time may further affect the neutronics of the system. This study presents calculations of the long-term geochemical behavior of waste packages containing the Enhanced Design Alternative (EDA) II inner shell, Navy canister, and basket components. The calculations do not include the Navy SNF in the waste package. The specific study objectives were to determine the chemical composition of the water and the quantity of silicon (Si) and other solid corrosion products in the waste package during the first million years after the waste package is breached. The results of this calculation will be used to ensure that the type and amount of criticality control material used in the waste package design will prevent criticality.

  1. Experimental investigation of factors limiting slow axis beam quality in 9xx nm high power broad area diode lasers

    SciTech Connect (OSTI)

    Winterfeldt, M., E-mail: martin.winterfeldt@fbh-berlin.de; Crump, P.; Wenzel, H.; Erbert, G.; Tränkle, G. [Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin (Germany)

    2014-08-14T23:59:59.000Z

    GaAs-based broad-area diode lasers are needed with improved lateral beam parameter product (BPP{sub lat}) at high power. An experimental study of the factors limiting BPP{sub lat} is therefore presented, using extreme double-asymmetric (EDAS) vertical structures emitting at 910?nm. Continuous wave, pulsed and polarization-resolved measurements are presented and compared to thermal simulation. The importance of thermal and packaging-induced effects is determined by comparing junction -up and -down devices. Process factors are clarified by comparing diodes with and without index-guiding trenches. We show that in all cases studied, BPP{sub lat} is limited by a non-thermal BPP ground-level and a thermal BPP, which depends linearly on self-heating. Measurements as a function of pulse width confirm that self-heating rather than bias-level dominates. Diodes without trenches show low BPP ground-level, and a thermal BPP which depends strongly on mounting, due to changes in the temperature profile. The additional lateral guiding in diodes with trenches strongly increases the BPP ground-level, but optically isolates the stripe from the device edges, suppressing the influence of the thermal profile, leading to a BPP-slope that is low and independent of mounting. Trenches are also shown to initiate strain fields that cause parasitic TM-polarized emission with large BPP{sub lat}, whose influence on total BPP{sub lat} remains small, provided the overall polarization purity is >95%.

  2. New insights on boundary plasma turbulence and the quasi-coherent mode in Alcator C-Mod using a Mirror Langmuir Probe

    SciTech Connect (OSTI)

    LaBombard, B.; Golfinopoulos, T.; Terry, J. L.; Brunner, D.; Davis, E.; Greenwald, M.; Hughes, J. W. [MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139 (United States)] [MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139 (United States)

    2014-05-15T23:59:59.000Z

    A new “Mirror Langmuir Probe” diagnostic, combined with a double-coil scanning magnetic probe, is used to interrogate Alcator C-Mod's quasi-coherent mode (QCM) with unprecedented detail. In ohmic EDA H-modes, the QCM is found to reside in a region of positive radial electric field, with a radial width (?3?mm) that spans open and closed field line regions. Large amplitude, in-phase sinusoidal bursts (?100?kHz) in density, electron temperature, and plasma potential are observed, with potential lagging density by ?16°, producing an outward radial transport velocity of ?10?m/s. Mode propagation corresponds to the sum of local E × B and electron diamagnetic drift velocities. Poloidal magnetic field fluctuations project to current filaments carrying peak current densities of ?25 A/cm{sup 2}. An evaluation of parallel electron force balance (Ohm's law) over a fluctuation cycle indicates a significant electromotive component. Interchange drive is also a contributor in the current continuity (vorticity) equation. Thus, the QCM is primarily a separatrix-spanning electron drift-wave with interchange and electromagnetic contributions.

  3. A review of ITER blanket designs

    SciTech Connect (OSTI)

    Green, L.; Carelli, M.D.; Stefani, F. [Westinghouse Science & Technology Center, Pittsburgh, PA (United States); Morgan, G.D. [McDonnell Douglas Corp., St. Louis, MO (United States); Mattas, R. [Argonne National Lab., IL (United States)

    1994-11-01T23:59:59.000Z

    Changes in ITER requirements and conditions in the Engineering Design Activity (EDA), and the desire to obtain greater operating flexibility, led to a reconsideration of the ITER Conceptual Design Activity (CDA) blanket designs. The current strategy is to follow a two-tiered development approach: The reference design blanket is non-breeding, and satisfies only the basic performance phase (BPP) functional requirements. This blanket would need to be changed out for the extended performance (EPP). A lower level development effort is also underway on a tritium-breeding blanket. The decision as to which of the two designs to adopt will be made at the end of a two-year development effort. This paper describes the present candidate blankets and the issues associated with each of them. The reference design is a non-breeding, low temperature, low pressure, water cooled, austenitic stainless steel (316SS) blanket/shield (BS). The first wall (FW), which may be integral with or separate from the BS, is a bonded copper-alloy/SS structure with a beryllium coating. Critical issues here are copper-SS bonding, fabricability, and radiation damage and stress corrosion cracking of the SS. The breeding blanket utilizes vanadium alloy structural material, with lithium as the breeder. The coolants are either lithium (self-cooled) or high pressure helium. The primary issues here are the need to electrically insulate the flow channels, the qualification of vanadium as a structural material, and the fabrication of large vanadium structures.

  4. Overview of Recent Japanese Activities in Fusion Technology

    SciTech Connect (OSTI)

    Seki, Masahiro [Japan Atomic Energy Research Institute (Japan); Yamamoto, I. [Nagoya University (Japan); Sagara, A. [NIFS (Japan)

    2005-04-15T23:59:59.000Z

    After the ITER/EDA study, Japanese activities in fusion technology have been mainly devoted to DEMO reactors. The paper intends to overview these activities.With respect to the test blanket modules, solid breeder blankets with ferritic steel structure cooled by helium and water are being developed by JAERI in cooperation with universities and NIFS. Advanced blankets are being developed by universities and NIFS. In the area of tritium processing technology, R and D has been focused on the blanket tritium recovery technology. In terms of the superconducting magnet, JAERI has performed basic research for the Fusion Power Demonstration Plant, aiming at realization of toroidal filed higher than 13 T using innovative superconductors, such as Nb{sub 3}Al and High Temperature Superconductors (HTS). In the R and D of negative ion based NBI technologies, a H{sup -} beam of 110 mA has been stably accelerated up to 0.9 MeV, which corresponds to the current density of 80 A/m{sup 2}. A beam power of 13.1 MW at 180 keV has been injected from three injectors in the LHD N-NBI. With respect to the radio-frequency heating technology, development of 170GHz ITER gyrotron has been progressed to achieve a 500kW for 100 sec operation in JAERI. Long pulse injection for 766 sec with 72 kW at 84 GHz was achieved in a LHD ECH experiment.

  5. Industrial opportunities on the International Thermonuclear Experimental Reactor (ITER) project

    SciTech Connect (OSTI)

    Ellis, W.R. [Raytheon Engineers and Constructors, New York, NY (United States)

    1996-12-01T23:59:59.000Z

    Industry has been a long-term contributor to the magnetic fusion program, playing a variety of important roles over the years. Manufacturing firms, engineering-construction companies, and the electric utility industry should all be regarded as legitimate stakeholders in the fusion energy program. In a program focused primarily on energy production, industry`s future roles should follow in a natural way, leading to the commercialization of the technology. In a program focused primarily on science and technology, industry`s roles, in the near term, should be, in addition to operating existing research facilities, largely devoted to providing industrial support to the International Thermonuclear Experimental Reactor (ITER) Project. Industrial opportunities on the ITER Project will be guided by the amount of funding available to magnetic fusion generally, since ITER is funded as a component of that program. The ITER Project can conveniently be discussed in terms of its phases, namely, the present Engineering Design Activities (EDA) phase, and the future (as yet not approved) construction phase. 2 refs., 3 tabs.

  6. Pellet fueling technology development leading to efficient fueling of ITER burning plasmas

    SciTech Connect (OSTI)

    Baylor, L.R.; Combs, S.K.; Jernigan, T.C.; Houlberg, W.A.; Owen, L.W.; Rasmussen, D.A.; Maruyama, S.; Parks, P.B. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6169 (United States)

    2005-05-15T23:59:59.000Z

    Pellet injection is the primary fueling technique planned for core fueling of ITER [ITER Technical Basis 2002 ITER EDA Documentation Series (Vienna: IAEA)] burning plasmas. Efficient core plasma fueling with deuterium and tritium D-T is a requirement for achieving high fusion gain and it cannot be achieved with gas fueling. Injection of pellets from the inner wall has been shown on present day tokamaks to provide efficient fueling and is planned for use on ITER. Modeling of the fueling deposition from inner wall pellet injection using the Parks ExB drift model indicates that pellets have the capability to fuel well inside the separatrix. Gas fueling calculations show very poor neutral penetration due to the high density and wide scrape off layer. Isotopically mixed D-T pellets can provide efficient tritium fueling that will minimize tritium wall loading when compared to gas puffing. Currently the performance of the ITER inner wall guide tube design is under test with initial results indicating that pellet speeds in excess of 300 m/s will lead to fragmented pellets. The ITER pellet injection technology requirements and remaining development issues are discussed along with a plan to reach the design goal for employment on ITER.

  7. Electrophilic, Ambiphilic, and Nucleophilic C-H bond Activation: Understanding the electronic continuum of C-H bond activation through transition-state and reaction pathway interaction energy decompositions

    SciTech Connect (OSTI)

    Ess, Daniel H; Goddard, William A; Periana, Roy A

    2010-01-01T23:59:59.000Z

    The potential energy and interaction energy profiles for metal- and metal?ligand-mediated alkane C?H bond activation were explored using B3LYP density functional theory (DFT) and the absolutely localized molecular orbital energy decomposition analysis (ALMO-EDA). The set of complexes explored range from late transition metal group 10 (Pt and Pd) and group 11 (Au) metal centers to group 7?9 (Ir, Rh, Ru, and W) metal centers as well as a group 3 Sc complex. The coordination geometries, electron metal count (d{sup 8}, d{sup 6}, d{sup 4}, and d{sup 0}), and ligands (N-heterocycles, O-donor, phosphine, and Cp*) are also diverse. Quantitative analysis using ALMO-EDA of both directions of charge-transfer stabilization (occupied to unoccupied orbital stabilization) energies between the metal?ligand fragment and the coordinated C?H bond in the transition state for cleavage of the C?H bond allows classification of C?H activation reactions as electrophilic, ambiphilic, or nucleophilic on the basis of the net direction of charge-transfer energy stabilization. This bonding pattern transcends any specific mechanistic or bonding paradigm, such as oxidative addition, ?-bond metathesis, or substitution. Late transition metals such as Au(III), Pt(II), Pd(II), and Rh(III) metal centers with N-heterocycle, halide, or O-donor ligands show electrophilically dominated reaction profiles with forward charge-transfer from the C?H bond to the metal, leading to more stabilization than reverse charge transfer from the metal to the C?H bond. Transition states and reaction profiles for d{sup 6} Ru(II) and Ir(III) metals with Tp and acac ligands were found to have nearly equal forward and reverse charge-transfer energy stabilization. This ambiphilic region also includes the classically labeled electrophilic cationic species Cp*(PMe{sub 3})Ir(Me). Nucleophilic character, where the metal to C?H bond charge-transfer interaction is most stabilizing, was found in metathesis reactions with W(II) and Sc(III) metal center complexes in reactions as well as late transition metal Ir(I) and Rh(I) pincer complexes that undergo C?H bond insertion. Comparison of pincer ligands shows that the PCP ligand imparts more nucleophilic character to an Ir metal center than a deprotonated PNP ligand. The PCP and POCOP ligands do not show a substantial difference in the electronics of C?H activation. It was also found that Rh(I) is substantially more nucleophilic than Ir(I). Lastly, as a qualitative approximation, investigation of transition-state fragment orbital energies showed that relative frontier orbital energy gaps correctly reflect electrophilic, ambiphilic, or nucleophilic charge-transfer stabilization patterns.

  8. Use of Separator with Regular Granular Filling in Extraction Processes - 12209

    SciTech Connect (OSTI)

    Volk, Vladimir; Veselov, Sergey; Zherebtsov, Alexander [Joint Stock Company 'A.A. Bochvar High-Technology Scientific Research Institute of Inorganic Materials' (VNIINM), Rogova st., 5A (Russian Federation)

    2012-07-01T23:59:59.000Z

    The separator with a regular granular filling has been developed to be used for the operations of the removal of carbon-black impurities from the aqueous flow; the intra-cycle regeneration of back-extractants; and the concentrating back-extraction of plutonium in the extraction SNF reprocessing technology. The process conditions for those operations have been experimentally tested using this separator. Thus, the separator for operations of concentrating reextraction of plutonium and regeneration recycling extractant allows to: - derive plutonium from the organic stream into an extremely concentrated form, reducing the amount of liquid radioactive waste (raffinate, decantate) plutonium branches to a minimum; - controlling the processes of concentration of uranium and plutonium, get uranium-plutonium product with required concentration and the amount of metal with required ratio; - eliminate contamination of the emulsion flows; - simplify the purification of uranium from the extract plutonium; - test results showed that when working on a solution 'hydrazine-DTPA' in the separator it is achieved the extraction of plutonium re-extract - 82% TC - at 56-65%. With the transition to the reextraction by solution 'U (IV)-hydrazine', of plutonium into re-extract increases to 95%, technetium - up to 83%; - regenerate the extractant recycling minimizing the amount of liquid radioactive waste generated as a technology used as well as alternative 'salt-free' systems; - it is found that the regeneration of the extractant solution of soda and EDA in the separator at a load of 3.2 m{sup 3} / (m{sup 2}.h) it can be achieved almost complete phase separation. Residual carryover of 0,005-0,006% emulsion is on the verge of analytical detection. - It is shown that in the depth of separation phase a separation of the extractant regeneration of quality superior is more than 5-7 times to the extraction. (authors)

  9. Low-to-moderate temperature geothermal resource assessment for Nevada, area specific studies. Final report, June 1, 1980-August 30, 1981

    SciTech Connect (OSTI)

    Trexler, D.T.; Koenig, B.A.; Flynn, T.; Bruce, J.L.; Ghusn, G. Jr.

    1981-01-01T23:59:59.000Z

    The Hawthorne study area is located in Mineral County, Nevada and surrounds the municipality of the same name. It encompasses an area of approximately 310 sq. km (120 sq. mi), and most of the land belongs to the US Army Ammunition Plant. The energy needs of the military combined with those of the area population (over 5,000 residents) are substantial. The area is classified as having a high potential for direct applications using the evaluation scheme described in Texler and others (1979). A variety of scientific techniques was employed during area-wide resource assessment. General geologic studies demonstrate the lithologic diversity in the area; these studies also indicate possible sources for dissolved fluid constituents. Geophysical investigations include aero-magnetic and gravity surveys which aid in defining the nature of regional, and to a lesser extent, local variations in subsurface configurations. Surface and near-surface structural features are determined using various types of photo imagery including low sun-angle photography. An extensive shallow depth temperature probe survey indicates two zones of elevated temperature on opposite sides of the Walker Lake basin. Temperature-depth profiles from several wells in the study area indicate significant thermal fluid-bearing aquifers. Fluid chemical studies suggest a wide spatial distribution for the resource, and also suggest a meteoric recharge source in the Wassuk Range. Finally, a soil-mercury survey was not a useful technique in this study area. Two test holes were drilled to conclude the area resource assessment, and thermal fluids were encountered in both wells. The western well has measured temperatures as high as 90 C (194 F) within 150 meters (500 ft) of the surface. Temperature profiles in this well indicate a negative temperature gradient below 180 meters (590 ft). The eastern hole had a bottom hole temperature of 61 C (142 F) at a depth of only 120 meters (395 ft). A positive gradient is observed to a total depth in the well. Several conclusions are drawn from this study: the resource is distributed over a relatively large area; resource fluid temperatures can exceed 90 C (194 F), but are probably limited to a maximum of 125 C (257 F); recharge to the thermal system is meteoric, and flow of the fluids in the near surface (< 500 m) is not controlled by faults; heat supplied to the system may be related to a zone of partially melted crustal rocks in the area 25 km (15 mi) south of Hawthorne. Four papers and an introduction are included. A separate abstract was prepared for each paper. (MHR)

  10. Hydrogen and oxygen isotope variations in the high Himalaya peraluminous Manaslu leucogranite: evidence for heterogeneous sedimentary source

    SciTech Connect (OSTI)

    France-Lanord, C.; Sheppard, S.M.F.; Le Fort, P.

    1988-02-01T23:59:59.000Z

    The Manaslu granite belongs to the High Himalaya leucogranitic belt which was produced by melting of the crust during postcollisional thrusting. deltaD and delta/sup 18/O values have been determined for whole rock and coexisting minerals from the approx. 8 km thick Manaslu massif and its 50 km long dyke sheet, its country rocks and the Formation 1 (F1) paragneisses which are the source of the granite. From the distribution of deltaD values in the granite and its country rocks, circulation of very low deuterium meteoric hydrothermal waters was extremely localized. Because these waters are depleted in deuterium by up to 50% relative to modern meteoric waters, the Manaslu area was either at an altitude substantially higher than that of today or a mountain chain once existed to the south. The F1 gneisses have delta/sup 18/O/sub quartz/ between 12 and 14.3 per thousand which confirms that the granite was generated from F1, but deltaD values are approx. = 20 per thousand higher than in the granite. Infiltration of low deltaD fluid (approx. =-90 per thousand) into the hot but dry F1 probably triggered partial melting; these fluids could have come from the dehydration of the Midlands sediments which are separated from the overlying F1 by the Main Central Thrust. The correlations among delta/sup 18/O, (/sup 87/Sr/sup 86/Sr)/sub 20 Ma/ and epsilon Nd values in both F1 and the granite indicate that the variations of these isotopic ratios in the Manaslu are inherited from those in F1 at the time of melting. In turn, these ratios in F1 are related to the proportion of quartz and phyllosilicates for the isotopic ratios of Nd and O, and to the quantity of radiogenic Sr generated within the sediment, which is a function of age and Rb content. Some other Himalayan leucogranites require either other crustal source rocks of the delta/sup 18/O and /sup 87/Sr/sup 86/Sr ratios to F1 vary along the Himalaya.

  11. The Chelyabinsk superbolide: a fragment of asteroid 2011 EO40?

    E-Print Network [OSTI]

    Marcos, C de la Fuente

    2013-01-01T23:59:59.000Z

    Bright fireballs or bolides are caused by meteoroids entering the Earth's atmosphere at high speed. On 2013 February 15, a superbolide was observed in the skies near Chelyabinsk, Russia. Such a meteor could be the result of the decay of an asteroid and here we explore this possibility applying a multistep approach. First, we use available data and Monte Carlo optimization (validated using 2008 TC3 as template) to obtain a robust solution for the pre-impact orbit of the Chelyabinsk impactor (semimajor axis = 1.62 au, eccentricity = 0.53, inclination = 3.82 deg, longitude of the ascending node = 326.41 deg and argument of perihelion = 109.44 deg). Then, we use this most probable orbit and numerical analysis to single out candidates for membership in, what we call, the Chelyabinsk asteroid family. Finally, we perform N-body simulations to either confirm or reject any dynamical connection between candidates and impactor. We find reliable statistical evidence on the existence of the Chelyabinsk cluster. It appears...

  12. Seismo-ionospheric effects associated with 'Chelyabinsk' meteorite during the first 25 minutes after its fall

    E-Print Network [OSTI]

    Berngardt, Oleg I

    2014-01-01T23:59:59.000Z

    This paper presents the properties of ionospheric irregularities elongated with Earth magnetic field during the first 25 minutes after the fall of the meteorite 'Chelyabinsk' experimentally observed with EKB radar of Russian segment of the SuperDARN. It is shown that 40 minutes before meteor fall the EKB radar started to observe powerful scattering from irregularities elongated with the Earth magnetic field in the F-layer. Scattering was observed for 80 minutes and stopped 40 minutes after the meteorite fall. During 9-15 minutes after the meteorite fall at ranges 400-1200 km from the explosion site a changes were observed in the spectral and amplitude characteristics of the scattered signal. This features were the sharp increase in the Doppler frequency shift of the scattered signal corresponding to the Doppler velocities about 600 m/s and the sharp increase of the scattered signal amplitude. This allows us to conclude that we detected the growth of small-scale ionospheric irregularities elongated with the Ea...

  13. Preliminary geothermal investigations at Manley Hot Springs, Alaska

    SciTech Connect (OSTI)

    East, J.

    1982-04-01T23:59:59.000Z

    Manley Hot Springs is one of several hot springs which form a belt extending from the Seward Peninsula to east-central Alaska. All of the hot springs are low-temperature, water-dominated geothermal systems, having formed as the result of circulation of meteoric water along deepseated fractures near or within granitic intrusives. Shallow, thermally disturbed ground at Manley Hot Springs constitutes an area of 1.2 km by 0.6 km along the lower slopes of Bean Ridge on the north side of the Tanana Valley. This area includes 32 springs and seeps and one warm (29.1/sup 0/C) well. The hottest springs range in temperature from 61/sup 0/ to 47/sup 0/C and are presently utilized for space heating and irrigation. This study was designed to characterize the geothermal system present at Manley Hot Springs and delineate likely sites for geothermal drilling. Several surveys were conducted over a grid system which included shallow ground temperature, helium soil gas, mercury soil and resistivity surveys. In addition, a reconnaissance ground temperature survey and water chemistry sampling program was undertaken. The preliminary results, including some preliminary water chemistry, show that shallow hydrothermal activity can be delineated by many of the surveys. Three localities are targeted as likely geothermal well sites, and a model is proposed for the geothermal system at Manley Hot Springs.

  14. Seismic Test of Solar Models, Solar Neutrinos and Implications for Metal-Rich Accretion

    E-Print Network [OSTI]

    R. A. Winnick; Pierre Demarque; Sarbani Basu; D. B. Guenther

    2002-05-29T23:59:59.000Z

    The Sun is believed to have been the recipient of a substantial amount of metal-rich material over the course of its evolution, particularly in the early stages of the Solar System. With a long diffusion timescale, the majority of this accreted matter should still exist in the solar convection zone, enhancing its observed surface abundance, and implying a lower-abundance core. While helioseismology rules out solar models with near-zero metallicity cores, some solar models with enhanced metallicity in the convection zone might be viable, as small perturbations to the standard model. Because of the reduced interior opacity and core temperature, the neutrino flux predicted for such models is lower than that predicted by the standard solar model. This paper examines how compatible inhomogeneous solar models of this kind are with the observed low and intermediate degree p-mode oscillation data, and with the solar neutrino data from the SNO Collaboration. We set an upper limit on how much metal-rich accretion took place during the early evolution of the Sun at about 2 Earth masses of iron (or about 40 Earth masses of meteoric material).

  15. In Situ Production of Chlorine-36 in the Eastern Snake River Plain Aquifer, Idaho: Implications for Describing Ground-Water Contamination Near a Nuclear Facility

    SciTech Connect (OSTI)

    L. D. Cecil; L. L. Knobel; J. R. Green (USGS); S. K. Frape (University of Waterloo)

    2000-06-01T23:59:59.000Z

    The purpose of this report is to describe the calculated contribution to ground water of natural, in situ produced 36Cl in the eastern Snake River Plain aquifer and to compare these concentrations in ground water with measured concentrations near a nuclear facility in southeastern Idaho. The scope focused on isotopic and chemical analyses and associated 36Cl in situ production calculations on 25 whole-rock samples from 6 major water-bearing rock types present in the eastern Snake River Plain. The rock types investigated were basalt, rhyolite, limestone, dolomite, shale, and quartzite. Determining the contribution of in situ production to 36Cl inventories in ground water facilitated the identification of the source for this radionuclide in environmental samples. On the basis of calculations reported here, in situ production of 36Cl was determined to be insignificant compared to concentrations measured in ground water near buried and injected nuclear waste at the INEEL. Maximum estimated 36Cl concentrations in ground water from in situ production are on the same order of magnitude as natural concentrations in meteoric water.

  16. An Early Warning System for Asteroid Impact

    E-Print Network [OSTI]

    Tonry, John L

    2010-01-01T23:59:59.000Z

    Earth is bombarded by meteors, occasionally by one large enough to cause a significant explosion and possible loss of life. Although the odds of a deadly asteroid strike in the next century are low, the most likely impact is by a relatively small asteroid, and we suggest that the best mitigation strategy in the near term is simply to move people out of the way. We describe an "early warning" system that could provide a week's notice of most sizable asteroids or comets on track to hit the Earth. This system, dubbed "Asteroid Terrestrial-impact Last Alert System" (ATLAS), comprises two observatories separated by about 100km that simultaneously scan the visible sky twice a night, and can be implemented immediately for relatively low cost. The sensitivity of ATLAS permits detection of 140m asteroids (100 Mton impact energy) three weeks before impact, and 50m asteroids a week before arrival. An ATLAS alarm, augmented by other observations, should result in a determination of impact location and time that is accura...

  17. Stable isotopes of authigenic minerals in variably-saturated fractured tuff

    SciTech Connect (OSTI)

    Weber, D.S.; Evans, D.D.

    1988-11-01T23:59:59.000Z

    Identifying stable isotope variation and mineralogical changes in fractured rock may help establish the history of climatic and geomorphological processes that might affect the isolation properties of a waste repository site. This study examines the use of the stable isotope ratios of oxygen ({sup 18}O/{sup 16}O) and carbon ({sup 13}C/{sup 12}C) in authigenic minerals as hydrogeochemical tools tracing low-temperature rock-water interaction in variably-saturated fractured stuff. Isotopic compositions of fracture-filling and rock matrix minerals in the Apache Leap tuff, near Superior, Arizona were concordant with geothermal temperatures and in equilibrium with water isotopically similar to present-day meteoric water and groundwater. Oxygen and carbon isotope ratios of fracture-filling, in unsaturated fractured tuff, displayed an isotopic gradient believed to result from near-surface isotopic enrichment due to evaporation rather than the effects of rock-water interaction. Oxygen isotope ratios of rock matrix opal samples exhibited an isotopic gradient believed to result from, leaching and reprecipitation of silica at depth. Methods and results can be used to further define primary flowpaths and the movement of water in variably-saturated fractured rock. 71 refs., 23 figs., 3 tabs.

  18. Improved Laboratory Transition Probabilities for Er II and Applications to the Erbium Abundances of the Sun and Five r-Process Rich, Metal-Poor Stars

    E-Print Network [OSTI]

    J. E. Lawler; C. Sneden; J. J. Cowan; J. -F. Wyart; I. I. Ivans; J. S. Sobeck; M. H. Stockett; E. A. Den Hartog

    2008-04-28T23:59:59.000Z

    Recent radiative lifetime measurements accurate to +/- 5% (Stockett et al. 2007, J. Phys. B 40, 4529) using laser-induced fluorescence (LIF) on 8 even-parity and 62 odd-parity levels of Er II have been combined with new branching fractions measured using a Fourier transform spectrometer (FTS) to determine transition probabilities for 418 lines of Er II. This work moves Er II onto the growing list of rare earth spectra with extensive and accurate modern transition probability measurements using LIF plus FTS data. This improved laboratory data set has been used to determine a new solar photospheric Er abundance, log epsilon = 0.96 +/- 0.03 (sigma = 0.06 from 8 lines), a value in excellent agreement with the recommended meteoric abundance, log epsilon = 0.95 +/- 0.03. Revised Er abundances have also been derived for the r-process-rich metal-poor giant stars CS 22892-052, BD+17 3248, HD 221170, HD 115444, and CS 31082-001. For these five stars the average Er/Eu abundance ratio, = 0.42, is in very good agreement with the solar-system r-process ratio. This study has further strengthened the finding that r-process nucleosynthesis in the early Galaxy which enriched these metal-poor stars yielded a very similar pattern to the r-process which enriched later stars including the Sun.

  19. Bright Fireballs Associated with the Potentially Hazardous Asteroid 2007LQ19

    E-Print Network [OSTI]

    Madiedo, Jose M; Ortiz, Jose L; Castro-Tirado, Alberto J; Cabrera-Caño, Jesus

    2014-01-01T23:59:59.000Z

    We analyze here two very bright fireballs produced by the ablation in the atmosphere of two large meteoroids in 2009 and 2010. These slow-moving and deep-penetrating events were observed over Spain in the framework of our Spanish Fireball Network continuous meteor monitoring campaign. The analysis of the emission spectrum imaged for one of these fireballs has provided the first clues about the chemical nature of the progenitor meteoroids. The orbital parameters of these particles suggests a likely association with the recently identified July rho-Herculid meteoroid stream. In addition, considerations about the likely parent body of this stream are also made on the basis of orbital dissimilarity criteria. This orbital analysis reveals that both meteoroids and PHA 2007LQ19 exhibit a similar evolution during a time period of almost 8,000 years, which suggests that either this NEO is the potential parent of these particles or that this NEO and both meteoroids had a common progenitor in the past.

  20. To the modification of methods of nuclear chronometry in astrophysics and geophysics

    E-Print Network [OSTI]

    V. S. Olkhovsky; M. E. Dolinska

    2009-02-06T23:59:59.000Z

    In practically all known till now methods of nuclear chronometry there were usually taken into account the life-times of only fundamental states of $\\alpha$-radioactive nuclei. But in the processes of nuclear synthesis in stars and under the influence of the constant cosmic radiation on surfaces of planets the excitations of the $\\alpha$-radioactive nuclei are going on. Between them there are the states with the excited $\\alpha$-particles inside the parent nuclei and so with much smaller life-times. And inside the large masses of stellar, terrestrial and meteoric substances the transitions between different internal conditions of radioactive nuclei are accompanied by infinite chains of the $\\gamma$-radiations with the subsequent $\\gamma$-absorptions, the further $\\gamma$-radiations etc. For the description of the $\\alpha$-decay evolution with considering of such excited states and multiple $\\gamma$-radiations and $\\gamma$-absorptions inside stars and under the influence of the cosmic radiation on the earth surface we present the quantum-mechanical approach, which is based on the generalized Krylov-Fock theorem. Some simple estimations are also presented. They bring to the conclusion that the usual (non-corrected) "nuclear clocks" do really indicate not to realistic values but to the \\emph{upper limits} of the durations of the $\\alpha$-decay stellar and planet processes.

  1. Resource investigation of low- and moderate-temperature geothermal areas in Paso Robles, California

    SciTech Connect (OSTI)

    Campion, L.F.; Chapman, R.H.; Chase, G.W.; Youngs, L.G.

    1983-01-01T23:59:59.000Z

    Ninety-eight geothermal wells and springs were identified and plotted, and a geologic map and cross sections were compiled. Detailed geophysical, geochemical, and geological surveys were conducted. The geological and geophysical work delineated the basement highs and trough-like depressions that can exercise control on the occurrence of the thermal waters. The Rinconada fault was also evident. Cross sections drawn from oil well logs show the sediments conforming against these basement highs and filling the depressions. It is along the locations where the sediments meet the basement highs that three natural warm springs in the area occur. Deep circulation of meteoric waters along faults seems to be a reasonable source for the warm water. The Santa Margarita, Pancho Rico, and Paso Robles Formations would be the first permeable zones that abut the faults through which water would enter. Temperatures and interpretation of well logs indicate the warmest aquifer at the base of the Paso Robles Formation. Warm water may be entering higher up in the section, but mixing with water from cooler zones seems to be evident. Geothermometry indicates reservoir temperatures could be as high as 91/sup 0/C (196/sup 0/F).

  2. Monte Carlo: in the beginning and some great expectations

    SciTech Connect (OSTI)

    Metropolis, N.

    1985-01-01T23:59:59.000Z

    The central theme will be on the historical setting and origins of the Monte Carlo Method. The scene was post-war Los Alamos Scientific Laboratory. There was an inevitability about the Monte Carlo Event: the ENIAC had recently enjoyed its meteoric rise (on a classified Los Alamos problem); Stan Ulam had returned to Los Alamos; John von Neumann was a frequent visitor. Techniques, algorithms, and applications developed rapidly at Los Alamos. Soon, the fascination of the Method reached wider horizons. The first paper was submitted for publication in the spring of 1949. In the summer of 1949, the first open conference was held at the University of California at Los Angeles. Of some interst perhaps is an account of Fermi's earlier, independent application in neutron moderation studies while at the University of Rome. The quantum leap expected with the advent of massively parallel processors will provide stimuli for very ambitious applications of the Monte Carlo Method in disciplines ranging from field theories to cosmology, including more realistic models in the neurosciences. A structure of multi-instruction sets for parallel processing is ideally suited for the Monte Carlo approach. One may even hope for a modest hardening of the soft sciences.

  3. Results of investigation at the Miravalles geothermal field, Costa Rica. Resultados de las investigaciones en el campo geotermico de Miravalles, Costa Rica; Parte 2, Muestreo de fluidos pozo abajo

    SciTech Connect (OSTI)

    Grigsby, C.O.; Goff, F.; Trujillo, P.E. Jr.; Counce, D.A.; Dennis, B.; Kolar, J.; Corrales, R. (Los Alamos National Lab., NM (USA); Instituto Costarricense de Electricidad, San Jose (Costa Rica))

    1989-10-01T23:59:59.000Z

    Samples of the geothermal fluids in the Miravalles, Costa Rica, geothermal system were collected from production wellbores using downhole fluid samplers, from flowing wellheads using miniseparators, and from hot springs that discharge in the area. The reservoir fluid at Miravalles is a neutral-chloride-type water, but fumaroles and acid-sulfate springs are present within the main thermal area, and there are bicarbonate-rich hot springs that are clearly related to the neutral-chloride reservoir fluids. Dissolved gases are primarily a mixture of CO{sub 2} with air, but samples collected in the fumarolic areas also contain H{sub 2}S. Water-stable isotope analyses suggest local meteoric recharge, and the reservoir fluid shows oxygen isotopic shifts of about 2.5% due to high-temperature oxygen exchange between water and rock. Chemical geothermometer temperatures are consistent with the measured downhole temperature of 220{degrees} to 255{degrees}C. This pattern of neutral-chloride reservoir fluids with acid-sulfate springs near the source region and bicarbonate-rich chloride hot springs at the periphery of the system suggests a lateral outflow type of hydrothermal system. In addition to the geochemical evidence, temperature profiles from several of the wells show temperature reversals that are characteristic of lateral outflow plumes. We find no evidence for the underlying, higher temperature (300{degrees}C) system, which has been suggested by other investigators. 24 refs., 14 figs., 6 tabs.

  4. Oceanic Trace Gases Numeric Data Packages from the Carbon Dioxide Information Analysis Center (CDIAC)

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

    CDIAC products include numeric data packages, publications, trend data, atlases, models, etc. and can be searched for by subject area, keywords, authors, product numbers, time periods, collection sites, spatial references, etc. Most data sets or packages, many with numerous data files, are free to download from CDIAC's ftp area. CDIAC lists the following numeric data packages under the broad heading of Oceanic Trace Gases: Carbon Dioxide, Hydrographic, and Chemical Data Obtained during the R/V Ronald H. Brown Repeat Hydrography Cruise in the Atlantic Ocean: CLIVAR CO2 Section A16S_2005 ( 01/11/05 - 022405) • Determination of Carbon Dioxide, Hydrographic, and Chemical Parameters during the R/V Nathaniel B. Palmer Cruise in the Southern Indian Ocean (WOCE Section S04I, 050396 - 070496) • Inorganic Carbon, Nutrient, and Oxygen Data from the R/V Ronald H. Brown Repeat Hydrography Cruise in the Atlantic Ocean: CLIVAR CO2 Section A16N_2003a (060403 – 081103) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Maurice Ewing Cruise in the Atlantic Ocean (WOCE Section A17, 010494 - 032194) • Global Ocean Data Analysis Project GLODAP: Results and Data • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Knorr Cruises in the North Atlantic Ocean on WOCE Sections AR24 (1102 – 120596) and A24, A20, and A22 (053097 – 090397) • Carbon Dioxide, Hydrographic and Chemical Data Obtained During the Nine R/V Knorr Cruises Comprising the Indian Ocean CO2 Survey (WOCE Sections I8SI9S, I9N, I8NI5E, I3, I5WI4, I7N, I1, I10, and I2; 120 194 – 012296) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Meteor Cruise 28/1 in the South Atlantic Ocean (WOCE Section A8, 032994 - 051294) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Knorr Cruise 138-3, -4, and -5 in the South Pacific Ocean (WOCE Sections P6E, P6C, and P6W, 050292 - 073092) • Global Distribution of Total Inorganic Carbon and Total Alkalinity below the deepest winter mixed layer depths • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V John V. Vickers Cruise in the Pacific Ocean (WOCE Section P13, NOAA CGC92 Cruise, 080492 – 102192) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Hesperides Cruise in the Atlantic Ocean (WOCE Section A5, 071492 - 081592) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Thomas G. Thompson Cruise in the Pacific Ocean (WOCE Section P10, 100593 – 111093) • The International Intercomparison Exercise of Underway fCO2 Systems during the R/V Meteor Cruise 36/1 in the North Atlantic Ocean • Carbon Dioxide, Hydrographic, and Chemical Data Obtained during the R/V Meteor Cruise 22/5 in the South Atlantic Ocean (WOCE Section A10, Dec. 1992-Jan, 1993) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained in the South Pacific Ocean (WOCE Sections P16A/P17A, P17E/P19S, and P19C, R/V Knorr , Oct. 1992-April 1993) • Surface Water and Atmospheric Underway Carbon Data Obtained During the World Ocean Circulation Experiment Indian Ocean Survey Cruises (R/V Knorr, Dec. 1994 – Jan, 1996) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Akademik Ioffe Cruise in the South Pacific Ocean (WOCE Section S4P, Feb.-April 1992) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Thomas Washington Cruise TUNES-1 in the Equatorial Pacific Ocean (WOCE section P17C) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Thomas Washington Cruise TUNES-3 in the Equatorial Pacific Ocean (WOCE section P16C) • Carbon-14 Measurements in Surface Water CO2 from the Atlantic, Indian and Pacific Oceans, 1965-1994 • Carbon Dioxide, Hydrographic, and Chemical Data Obtained During R/V Meteor Cruise 18/1 in the North Atlantic Ocean (WOCE Section A1E) • Carbon Dioxide, Hydrographic, and Chemical Data Obtained in the Central South Pacific Ocean (WOCE Sections P17S and P16S) during the TUNES-2 Expedition of the R/V Th

  5. Oxygen buffering of Kilauea volcanic gases and the oxygen fugacity of Kilauea basalt

    SciTech Connect (OSTI)

    Gerlach, T.M. (Geological Survey, Vancouver, WA (United States))

    1993-02-01T23:59:59.000Z

    Volcanic gases collected during episode 1 of the Puu Oo eruption along the east rift zone of Kilauea Volcano, Hawaii, have uniform C-O-H-S-Cl-F compositions that are sharply depleted in CO[sub 2]. The CO[sub 2]-poor gases are typical of Type II volcanic gases (GERLACH and GRAEBER, 1985) and were emitted from evolved magma stored for a prolonged period of time in the east rift zone after releasing CO[sub 2]-rich gases during an earlier period of temporary residence in the summit magma chamber. The samples are remarkably free of contamination by atmospheric gases and meteoric water. Thermodynamic evaluation of the analytical data shows that the episode 1 gases have equilibrium compositions appropriate for temperatures between 935 and 1032[degrees]C. Open- and closed-system equilibrium models of species distributions for the episode 1 gases show unequivocally that coexisting lavas buffered the gas oxygen fugacities during cooling. These models indicate that the F[sub o[sub 2

  6. Thermal effects of Kohout convection in the Bahamas and Florida

    SciTech Connect (OSTI)

    Simms, M.A.

    1985-01-01T23:59:59.000Z

    Kohout convection is a low-temperature groundwater thermal convection process in carbonate platform margins. It was first conceived of and postulated to occur in the subsurface of Florida by Francis Kohout in the 1960's. The flow is driven by buoyancy arising from subsurface differences in salinity and in temperature. Cold, dense seawater surrounding a platform at depth migrates inward, displacing warmer pore waters at the same elevation. This inflowing density current is in turn warmed within the platform and is buoyed upward to discharge on the platform shelf or margin resulting in a giant convective half-cell. In isolated platforms, such as the Bahamas, temperature differences alone drive Kohout convection. In Florida, the regional meteoric flow of the Floridan Aquifer mixes by dispersion with the convecting seawater resulting in an enhanced flow rate. Approximate analytical and numerical solutions of the governing differential equations allow the interactions of the flow and temperature fields to be determined. Permeability characteristics and platform margin geometry are the principal controls of the thermal structure and groundwater flow pattern in isolated platforms. In Florida, regional flow strength is also a control. High horizontal permeabilities (100 md to 1 darcy and higher) and tall, steep margins (1 km height, 30/sup 0/ slope) allow Kohout convection to penetrate 30 to 50 km inland causing substantial cooling. It may thus be a control of thermal evolution of the Florida-Bahamas Basin as well as parts of other sedimentary basins.

  7. Solar activity around AD 775 from aurorae and radiocarbon

    E-Print Network [OSTI]

    Neuhaeuser, Ralph

    2015-01-01T23:59:59.000Z

    A large variation in 14 C around AD 775 has been considered to be caused by one or more solar super-flares within one year. We critically review all known aurora reports from Europe as well as the Near, Middle, and Far East from AD 731 to 825 and find 39 likely true aurorae plus four more potential aurorae and 24 other reports about halos, meteors, thunderstorms etc., which were previously misinterpreted as aurorae or misdated; we assign probabilities for all events according to five aurora criteria. We find very likely true aurorae in AD 743, 745, 762, 765, 772, 773, 793, 796, 807, and 817. There were two aurorae in the early 770s observed near Amida (now Diyarbakir in Turkey near the Turkish-Syrian border), which were not only red, but also green-yellow - being at a relatively low geo-magnetic latidude, they indicate a relatively strong solar storm. However, it cannot be argued that those aurorae (geo-magnetical latitude 43 to 50 deg, considering five different reconstructions of the geo-magnetic pole) coul...

  8. Glaciation and saline-freshwater mixing as a possible cause of cave formation in the eastern midcontinent region of the United States: A conceptual model

    SciTech Connect (OSTI)

    Panno, S.V. (Illinois State Geological Survey, Champaign (USA)); Bourcier, W.L. (Lawrence Livermore National Lab., CA (USA))

    1990-08-01T23:59:59.000Z

    We present a hypothesis for the formation of caves and associated karst features near the southern margins of the Illinois, Michigan, and Appalachian basins. Spatial and temporal relations among intracratonic basins, karstic terrain, and continental glaciation suggest that Pleistocene glaciation may have initiated the discharge of saline waters from the margins of these basins. Glaciation-induced discharge of saline waters could result from the consolidation of sediments due to the overlying pressure of glacial ice, and flushing of underlying aquifers as a result of bottom melting in recharge areas of basic aquifers. The upward migration of basin-derived saline waters into near-surface aquifers would result in the mixing of saline waters with infiltrating glacial meltwater and meteoric water. The development of a vertically restricted zone of mixing of saline and fresh water in limestone aquifers would result in the dissolution of limestone; this mechanism could be responsible for the formation, or at least the initiation of, some caves and associated karst features in the midcontinent region.

  9. Light stable isotope study of the Roosevelt Hot Springs thermal area, Southwestern Utah

    SciTech Connect (OSTI)

    Rohrs D.T.; Bowman, J.R.

    1980-05-01T23:59:59.000Z

    The isotopic composition of hydrogen, oxygen, and carbon has been determined for regional cold springs, thermal fluids, and rocks and minerals from the Roosevelt Hot Springs thermal area. The geothermal system has developed within plutonic granitic rocks and amphibolite facies gneiss, relying upon fracture-controlled permeability for the migration of the thermal fluids. Probably originating as meteoric waters in the upper elevations of the Mineral Mountains, the thermal waters sampled in the production wells display an oxygen isotopic shift of at least +1.2. Depletions of delta /sup 18/O in wole rock, K-feldspar, and biotite have a positive correlation with alteration intensity. W/R mass ratios, calculated from the isotopic shifts of rock and water, range up to 3.0 in a producing horizon of one well, although the K-feldspar has experienced only 30% exchange with the thermal waters. While veinlet quartz has equilibrated with the thermal waters, the /sup 18/O values of K-mica clay, an alteration product of plagioclase, mimic the isotopic composition of K-feldspar and whole rock. This suggests that locally small W/R ratios enable plagioclase to influence its alteration products by isotopic exchange.

  10. Pellet Fueling Technology Development Leading to Efficient Fueling of ITER Burning Plasmas

    SciTech Connect (OSTI)

    Baylor, Larry R [ORNL; Combs, Stephen Kirk [ORNL; Jernigan, Thomas C [ORNL; Houlberg, Wayne A [ORNL; Maruyama, S. [ITER International Team, Garching, Germany; Owen, Larry W [ORNL; Parks, P. B. [General Atomics; Rasmussen, David A [ORNL

    2005-01-01T23:59:59.000Z

    Pellet injection is the primary fueling technique planned for central fueling of the ITER burning plasma, which is a requirement for achieving high fusion gain. Injection of pellets from the inner wall has been shown on present day tokamaks to provide efficient fueling and is planned for use on ITER [1,2]. Significant development of pellet fueling technology has occurred as a result of the ITER R&D process. Extrusion rates with batch extruders have reached more than 1/2 of the ITER design specification of 1.3 cm3/s [3] and the ability to fuel efficiently from the inner wall by injecting through curved guide tubes has been demonstrated on several fusion devices. Modeling of the fueling deposition from inner wall pellet injection has been done using the Parks et al. ExB drift model [4] shows that inside launched pellets of 3mm size and speeds of 300 m/s have the capability to fuel well inside the separatrix. Gas fueling on the other hand is calculated to have very poor fueling efficiency due to the high density and wide scrape off layer compared to current machines. Isotopically mixed D/T pellets can provide efficient tritium fueling that will minimize tritium wall loading when compared to gas puffing of tritium. In addition, the use of pellets as an ELM trigger has been demonstrated and continues to be investigated as an ELM mitigation technique. During the ITER CDA and EDA the U.S. was responsible for ITER fueling system design and R&D and is in good position to resume this role for the ITER pellet fueling system. Currently the performance of the ITER guide tube design is under investigation. A mockup is being built that will allow tests with different pellet sizes and repetition rates. The results of these tests and their implication for fueling efficiency and central fueling will be discussed. The ITER pellet injection technology developments to date, specified requirements, and remaining development issues will be presented along with a plan to reach the design goal in time for employment on ITER.

  11. Impact Assessment of Existing Vadose Zone Contamination at the Hanford Site SX Tank Farm

    SciTech Connect (OSTI)

    Khaleel, Raziuddin; White, Mark D.; Oostrom, Martinus; Wood, Marcus I.; Mann, Frederick M.; Kristofzski, John G.

    2007-11-01T23:59:59.000Z

    The USDOE has initiated an impact assessment of existing vadose zone contamination at the Hanford Site SX tank farm in southeastern Washington State. The assessment followed the Resource Conservation and Recovery Act (RCRA) Corrective Action process to address the impacts of past tank waste releases to the vadose zone at the single-shell tank farm. Numerical models were developed that consider the extent of contamination presently within the vadose zone and predict contaminant movement through the vadose zone to groundwater. The transport of representative mobile (technetium-99) and immobile (cesium-137) constituents was evaluated in modeling. The model considered the accelerated movement of moisture around and beneath single-shell tanks that is attributed to bare, gravel surfaces resulting from the construction of the underground storage tanks. Infiltration, possibly nearing 100 mm yr–1, is further amplified in the tank farm because of the umbrella effect created by percolating moisture being diverted by the impermeable, sloping surface of the large, 24-m-diameter, buried tank domes. For both the base case (no-action alternative) simulation and a simulation that considered placement of an interim surface barrier to minimize infiltration, predicted groundwater concentrations for technetium-99 at the SX tank farm boundary were exceedingly high, on the order of 106 pCi L–1. The predicted concentrations are, however, somewhat conservative because of our use of two-dimensional modeling for a three-dimensional problem. A series of simulations were performed, using recharge rates of 50, 30, and 10 mm yr–1, and compared to the base case (100 mm yr–1) results. As expected, lowering meteoric recharge delayed peak arrival times and reduced peak concentrations at the tank farm boundary.

  12. IMPACT ASSESSMENT OF EXISTING VADOSE ZONE CONTAMINATION AT THE HANFORD SITE SX TANK FARM

    SciTech Connect (OSTI)

    KHALEEL R

    2007-11-01T23:59:59.000Z

    The USDOE has initiated an impact assessment of existing vadose zone contamination at the Hanford Site SX tank farm in southeastern Washington State. The assessment followed the Resource Conservation and Recovery Act (RCRA) Corrective Action process to address the impacts of past tank waste releases to the vadose zone at the single-shell tank farm. Numerical models were developed that consider the extent of contamination presently within the vadose zone and predict contaminant movement through the vadose zone to groundwater. The transport of representative mobile (technetium-99) and immobile (cesium-137) constituents was evaluated in modeling. The model considered the accelerated movement of moisture around and beneath single-shell tanks that is attributed to bare, gravel surfaces resulting from the construction of the underground storage tanks. Infiltration, possibly nearing 100 mm yr{sup -1}, is further amplified in the tank farm because of the umbrella effect created by percolating moisture being diverted by the impermeable, sloping surface of the large, 24-m-diameter, buried tank domes. For both the base case (no-action alternative) simulation and a simulation that considered placement of an interim surface barrier to minimize infiltration, predicted, groundwater concentrations for technetium-99 at the SX tank farm boundary were exceedingly high, on the order of 10{sup 6} pCi L{sup -1}. The predicted concentrations are, however, somewhat conservative because of our use of two-dimensional modeling for a three-dimensional problem. A series of simulations were performed, using recharge rates of 50, 30, and 10 mm yr{sup -1}, and compared to the basecase(100 mm yr{sup -1}) results. As expected, lowering meteoric recharge delayed peak arrival times and reduced peak concentrations at the tank farm boundary.

  13. Coupling Hydrological and Geochemical Simulations to Assess Spatial Heterogeneity and Chemical Evolution of Groundwaters at Two Candidate Repository Sites in Sweden

    SciTech Connect (OSTI)

    Auque, Luis Francisco; Gimeno, Maria Jose; Gomez, Javier B. [Petrologia y Geoquimica, Universidad de Zaragoza, Depto. Ciencias de la Tierra, Facultad de Ciencias, c/ Pedro Cerbuna 12, Zaragoza, E-50009 (Spain); Puigdomenech, Ignasi [Safety and Science, Swedish Nuclear Fuel and Waste Management Co (SKB), Box 5864, Stockholm, SE-102 40 (Sweden)

    2007-07-01T23:59:59.000Z

    The chemical composition of groundwater surrounding a high level radioactive waste repository is of importance to many factors that affect repository performance. The geochemical characteristics of Swedish groundwater systems are governed by successive mixing events between several end-member waters during their paleogeographic evolution. An approach is proposed here to investigate the spatial and temporal evolution of groundwater geochemical conditions by coupling hydrogeological and geochemical models in a sequential way. The procedure combines hydrogeological results by others [1,2] of a discrete fracture network using CONNECTFLOW with a mixing and reaction-path simulation using PHREEQC. The hydrological results contain mixing proportions of four reference waters (a deep brine, glacial meltwater, marine water, and meteoric infiltration) at each time step and at every node of the 3D model domain. In this work, mixing fractions are fed into PHREEQC using software developed to build formatted input files and to extract the information from output files for subsequent plotting and analysis. The geochemical calculations included both chemical mixing and equilibrium reactions with selected minerals: calcite, chalcedony and an Fe(III) oxyhydroxide. Some results for the Forsmark site, about 170 km north of Stockholm, Sweden, are graphically presented. Cross sections, where each node is color-coded with respect to an important variable (pH, Eh or concentrations of main elements), are used to visualize the future evolution of the site. Sensitivity analyses were made to evaluate the effects of the different reactions and/or assumptions. The proposed methodology has proved useful for evaluating the future geochemical evolution of the repository sites and to increase the confidence in the site descriptions. (authors)

  14. Silver Peak Innovative Exploration Project (Ram Power Inc.)

    SciTech Connect (OSTI)

    Miller, Clay

    2010-01-01T23:59:59.000Z

    Data generated from the Silver Peak Innovative Exploration Project, in Esmeralda County, Nevada, encompasses a “deep-circulation (amagmatic)” meteoric-geothermal system circulating beneath basin-fill sediments locally blanketed with travertine in western Clayton Valley (lithium-rich brines from which have been mined for several decades). Spring- and shallow-borehole thermal-water geochemistry and geothermometry suggest that a Silver Peak geothermal reservoir is very likely to attain the temperature range 260- 300oF (~125-150oC), and may reach 300-340oF (~150-170oC) or higher (GeothermEx, Inc., 2006). Results of detailed geologic mapping, structural analysis, and conceptual modeling of the prospect (1) support the GeothermEx (op. cit.) assertion that the Silver Peak prospect has good potential for geothermal-power production; and (2) provide a theoretical geologic framework for further exploration and development of the resource. The Silver Peak prospect is situated in the transtensional (regional shearing coupled with extension) Walker Lane structural belt, and squarely within the late Miocene to Pliocene (11 Ma to ~5 Ma) Silver Peak-Lone Mountain metamorphic core complex (SPCC), a feature that accommodated initial displacement transfer between major right-lateral strike- slip fault zones on opposite sides of the Walker Lane. The SPCC consists essentially of a ductiley-deformed lower plate, or “core,” of Proterozoic metamorphic tectonites and tectonized Mesozoic granitoids separated by a regionally extensive, low-angle detachment fault from an upper plate of severely stretched and fractured structural slices of brittle, Proterozoic to Miocene-age lithologies. From a geothermal perspective, the detachment fault itself and some of the upper-plate structural sheets could function as important, if secondary, subhorizontal thermal-fluid aquifers in a Silver Peak hydrothermal system.

  15. Application of seismic tomographic techniques in the investigation of geothermal systems

    SciTech Connect (OSTI)

    Romero, A.E. Jr.

    1995-05-01T23:59:59.000Z

    The utility of microearthquake data for characterizing the Northwest Geysers geothermal field and the Long Valley Caldera (LVC) was investigated. Three-dimensional (3-D) P- and S-wave seismic velocity models were estimated for the Coldwater Creek Steam Field (CCSF) in the Northwest Geysers region. Hypocenters relocated using these 3-D models appear to be associated with the steam producing zone, with a deeper cluster of hypocenters beneath an active injection well. Spatial and temporal patterns of seismicity exhibit strong correlation with geothermal exploitation. A 3-D differential attenuation model was also developed for the CCSF from spectral ratios corrected for strong site effects. High-velocity anomalies and low attenuation in the near surface correspond to Franciscan metagraywacke and greenstone units. Microearthquakes recorded at seismographic stations located near the metagraywacke unit exhibit high corner frequencies. Low-velocity anomalies and higher attenuation in the near surface are associated with sections of Franciscan melange. Near-surface high attenuation and high Vp/Vs are interpreted to indicate liquid-saturated regions affected by meteoric recharge. High attenuation and low Vp/Vs marks the steam producing zone, suggesting undersaturation of the reservoir rocks. The extent of the high attenuation and low Vp/Vs anomalies suggest that the CCSF steam reservoir may extend northwestward beyond the known producing zone. This study concludes that microearthquake monitoring may be useful as an active reservoir management tool. Seismic velocity and attenuation structures as well as the distribution of microearthquake activity can be used to identify and delineate the geothermal reservoir, while temporal variations in these quantities would be useful in tracking changes during exploitation.

  16. Silver Peak Innovative Exploration Project (Ram Power Inc.)

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

    Miller, Clay

    Data generated from the Silver Peak Innovative Exploration Project, in Esmeralda County, Nevada, encompasses a “deep-circulation (amagmatic)” meteoric-geothermal system circulating beneath basin-fill sediments locally blanketed with travertine in western Clayton Valley (lithium-rich brines from which have been mined for several decades). Spring- and shallow-borehole thermal-water geochemistry and geothermometry suggest that a Silver Peak geothermal reservoir is very likely to attain the temperature range 260- 300oF (~125-150oC), and may reach 300-340oF (~150-170oC) or higher (GeothermEx, Inc., 2006). Results of detailed geologic mapping, structural analysis, and conceptual modeling of the prospect (1) support the GeothermEx (op. cit.) assertion that the Silver Peak prospect has good potential for geothermal-power production; and (2) provide a theoretical geologic framework for further exploration and development of the resource. The Silver Peak prospect is situated in the transtensional (regional shearing coupled with extension) Walker Lane structural belt, and squarely within the late Miocene to Pliocene (11 Ma to ~5 Ma) Silver Peak-Lone Mountain metamorphic core complex (SPCC), a feature that accommodated initial displacement transfer between major right-lateral strike- slip fault zones on opposite sides of the Walker Lane. The SPCC consists essentially of a ductiley-deformed lower plate, or “core,” of Proterozoic metamorphic tectonites and tectonized Mesozoic granitoids separated by a regionally extensive, low-angle detachment fault from an upper plate of severely stretched and fractured structural slices of brittle, Proterozoic to Miocene-age lithologies. From a geothermal perspective, the detachment fault itself and some of the upper-plate structural sheets could function as important, if secondary, subhorizontal thermal-fluid aquifers in a Silver Peak hydrothermal system.

  17. Sedimentation in Michigan basin during earliest Salina: evidence for an excursion from eustacy

    SciTech Connect (OSTI)

    Cercone, K.R.

    1986-08-01T23:59:59.000Z

    A basal A-1 evaporite member of the Upper Silurian Salina Group, a marine evaporite sequence, appears to record a time of lowered sea level in the Michigan basin. Indicators of shallow sabkha deposition, such as nodular anhydrite and nonplanar stromatolites, occur in parts of the A-1 evaporite. This unit also contains scattered nodules of borate, a nonmarine evaporite, and the bittern salt sylvite. The petrologic evidence for lowered sea level is supported by studies showing that Middle Silurian reefal buildups within the Michigan basin were subaerially exposed during or immediately prior to A-1 evaporite deposition. However, other studies concluded that carbonate platforms in Indiana and Illinois continued to host flourishing Silurian reef communities throughout A-1 evaporite deposition, under conditions of high global sea levels. The conflicting evidence can be resolved only by postulating that the Michigan basin became isolated from surrounding epeiric seas during A-1 evaporite deposition. Tidal and peritidal carbonates - the Greenfield, Limberlost, Sugar Run, and Engadine dolomites - were deposited at the edge of the Michigan basin during this time. These units could have served both as sills and as shorelines that separated open epeiric seas from a partly desiccated basin. Evaporating brines, pooled below sea level in the basin, could have been replenished by seawater and meteoric water flowing through shallow inlets or seeping into the basin through the subsurface. Basin isolation may have been enhanced by minor eustatic fluctuations in sea level and by the constraints on shallow-water circulation in epeiric seas. Therefore, in analogy to the Miocene desiccation of the Mediterranean, the large apparent drop in sea level recorded by the A-1 evaporite would have been a local rather than a eustatic change.

  18. Origin and geochemical evolution of the Michigan basin brine

    SciTech Connect (OSTI)

    Wilson, T.P.

    1989-01-01T23:59:59.000Z

    Chemical and isotopic data were collected on 126 oil field brine samples and were used to investigate the origin and geochemical evolution of water in 8 geologic formations in the Michigan basin. Two groups of brine are found in the basin, the Na-Ca-Cl brine in the upper Devonian formations, and Ca-Na-Cl brine from the lower Devonian and Silurian aged formations. Water in the upper Devonian Berea, Traverse, and Dundee formations originated from seawater concentrated into halite facies. This brine evolved by halite precipitation, dolomitization, aluminosilicate reactions, and the removal of SO{sub 4} by bacterial action or by CaSO{sub 4} precipitation. The stable isotopic composition (D, O) is thought to represent dilution of evapo-concentrated seawater by meteoric water. Water in the lower Devonian Richfield, Detroit River Group, and Niagara-Salina formations is very saline Ca-Na-Cl brine. Cl/Br suggest it originated from seawater concentrated through the halite and into the MgSO{sub 4} salt facies, with an origin linked to the Silurian and Devonian salt deposits. Dolomitization and halite precipitation increased the Ca/Na, aluminosilicate reactions removed K, and bacterial action or CaSO{sub 4} precipitation removed SO{sub 4} from this brine. Water chemistry in the Ordovician Trenton-Black River formations indicates dilution of evapo-concentrated seawater by fresh or seawater. Possible saline end-members include Ordovician seawater, present-day upper Devonian brine, or Ca-Cl brine from the deeper areas in the basin.

  19. The use of FBC wastes in the reclamation of coal slurry solids. Final technical report, September 1, 1991--August 31, 1992

    SciTech Connect (OSTI)

    Dreher, G.B.; Roy, W.R.; Steele, J.D. [Illinois State Geological Survey, Champaign, IL (United States)

    1992-12-31T23:59:59.000Z

    Five fluidized bed combustion (FBC) wastes, one agricultural limestone (Ag LS), and two coal slurry solids (CSS) samples were characterized chemically and mineralogically. Mixtures of the materials (FBC waste or Ag LS and CSS) were prepared and subjected to leaching with deionized water in laboratory experiments and with meteoric water in outdoor weathering experiments. The major cations in the leachates were calcium and sodium, with minor concentrations of magnesium and potassium. The major anions were chloride and sulfate, with minor amounts of fluoride and bicarbonate. The major minerals in the unleached FBC wastes were calcium oxide and calcium sulfate (anhydrite). The calcium oxide was hydrated upon wetting to calcium hydroxide, which was converted to calcium carbonate (calcite) upon exposure to atmospheric carbon dioxide, or carbon dioxide from the neutralization reaction of acid with calcite. The calcium hydroxide controlled the pH of leachates in the early leaching period, whereas calcite controlled the pH in the later leaching period. The alkaline calcium species in the FBC wastes effectively neutralized the acid generated by pyrite oxidation. In extracts generated by the Toxicity Characteristic Leaching Procedure (TCLP), selenium was found to be above the US EPA primary drinking water maximum contaminant level (MCL) in extracts from each of the FBC wastes and CSS samples. Mercury was above its MCL in the extract of FBC-2. The other six constituents (As, Ba, Cd, Cr, Pb, and Ag) were below their corresponding MCLS. Hence, these FBC wastes would not be classified as hazardous under the Resource Conservation and Recovery Act.

  20. Diagenesis of Eolian and fluvial feldspathic sandstones, Norphlet formation (upper Jurassic), Rankin County, Mississippi, and Mobile County, Alabama

    SciTech Connect (OSTI)

    McBride, E.F.; Land, L.S.; Mack, L.E.

    1987-09-01T23:59:59.000Z

    Norphlet sandstones in seven cores from Mississippi and Alabama are arkoses and subarkoses deposited in eolian-dune, interdune, and fluvial environments. Similar to the deeply buried (> 5 km) Tertiary feldspathic sandstones of the Gulf basin, all detrital plagioclase that survived dissolution has been albitized. Fluvial red sandstone lost all initial porosity by the introduction of preburial pedogenic calcite and compaction. Initial porosity of eolian sands was reduced by compaction to an average of 29%; and later by cementation by quartz, carbonates, anhydrite, halite, K-feldspar, and illite. Quartz and anhydrite cements precipitated between 90/sup 0/ and 100/sup 0/C (approximately 2.3 km deep), carbonates and halite cements formed below 120/sup 0/C (< 3 km), and late-stage illite cement formed between 130/sup 0/ and 150/sup 0/C (4-5 km deep). Cements are patchy, and some, especially quartz and anhydrite, are texture-selective, being more abundant in coarser laminae. Secondary porosity, which makes up approximately half the porosity in thin sections, formed by dissolution of detrital grains (feldspar, rock fragments) and cements (anhydrite, carbonate, halite). Reservoir bitumen records an early phase of oil entrapment. Reservoir quality is influenced by the abundance of reservoir bitumen and thread-like illite, both of which bridge pores. Isotopic data suggest that during the first 30 to 40 m.y. of burial, subsurface diagenesis of the Norphlet Formation was dominated by deep-circulating, hot, meteoric water. This phenomenon may be characteristic of the early diagenetic history of rifted basins. 10 figures, 5 tables.

  1. Reactor control system upgrade for the McClellan Nuclear Radiation Center Sacramento, CA.

    SciTech Connect (OSTI)

    Power, M. A.

    1999-03-10T23:59:59.000Z

    Argonne National Laboratory is currently developing a new reactor control system for the McClellan Nuclear Radiation Facility. This new control system not only provides the same functionality as the existing control system in terms of graphic displays of reactor process variables, data archival capability, and manual, automatic, pulse and square-wave modes of operation, but adds to the functionality of the previous control system by incorporating signal processing algorithms for the validation of sensors and automatic calibration and verification of control rod worth curves. With the inclusion of these automated features, the intent of this control system is not to replace the operator but to make the process of controlling the reactor easier and safer for the operator. For instance, an automatic control rod calibration method reduces the amount of time to calibrate control rods from days to minutes, increasing overall reactor utilization. The control rod calibration curve, determined using the automatic calibration system, can be validated anytime after the calibration, as long as the reactor power is between 50W and 500W. This is done by banking all of the rods simultaneously and comparing the tabulated rod worth curves with a reactivity computer estimate. As long as the deviation between the tabulated values and the reactivity estimate is within a prescribed error band, then the system is in calibration. In order to minimize the amount of information displayed, only the essential flux-related data are displayed in graphical format on the control screen. Information from the sensor validation methods is communicated to the operators via messages, which appear in a message window. The messages inform the operators that the actual process variables do not correlate within the allowed uncertainty in the reactor system. These warnings, however, cannot cause the reactor to shutdown automatically. The reactor operator has the ultimate responsibility of using this information to either keep the reactor operating or to shut the reactor down. In addition to new developments in the signal processing realm, the new control system will be migrating from a PC-based computer platform to a Sun Solaris-based computer platform. The proven history of stability and performance of the Sun Sohuis operating system are the main advantages to this change. The I/O system will also be migrating from a PC-based data collection system, which communicates plant data to the control computer using RS-232 connections, to an Ethernet-based I/O system. The Ethernet Data Acquisition System (EDAS) modules from Intelligent Instrumentation, Inc. provide an excellent solution for embedded control of a system using the more universally-accepted data transmission standard of TCP/IP. The modules contain a PROM, which operates all of the functionality of the I/O module, including the TCP/IP network access. Thus the module does not have an internal, sophisticated operating system to provide functionality but rather a small set hard-coded of instructions, which almost eliminates the possibility of the module failing due to software problems. An internal EEPROM can be modified over the Internet to change module configurations. Once configured, the module is contacted just like any other Internet host using TCP/IP socket calls. The main advantage to this architecture is its flexibility, expandability, and high throughput.

  2. Repository Surface Design Engineering Files Report Rev 00 ICN 1

    SciTech Connect (OSTI)

    DOE

    2001-05-08T23:59:59.000Z

    The objective of the Repository Surface Design Engineering Files Report Supplement [herein known as the Engineering Files (EF)] is to provide the surface design data needed by the Environmental Impact Statement (EIS) contractor to prepare the EIS and evaluate options and alternatives. This document is based on the Repository Surface Design Engineering Files Report, Revision 03 (CRWMS M and O 1999f) (EF Rev 03). Where facility and system designs have been changed for the Site Recommendation (SR) effort they are described in this report. EIS information provided in this report includes the following: (1) Description of program phases; there are no changes that impact this report. (2) A description of the major design requirements and assumptions that drive the surface facilities reference design is provided herein (Section 2.2), including the surface design resulting from recommendations regarding Enhanced Design Alternative (EDA) II, as discussed in the License Application Design Section Report (CRWMS M and O 1999d), and changes to the waste stream. See Section 2, Table 2-2, for the SR waste stream. (3) The major design requirements and assumptions that drive the surface facilities reference design are by reference to EF Rev 03; there are no changes that impact this report. (4) Description of the reference design concept and existing site conditions is by reference to EF Rev 03 (including Table 4-1, which is not included in this supplement); there are no changes that impact this report. (5) Description of alternative design cases is by reference to EF Rev 03; there are no changes that impact this report. (6) Description of optional inventory modules is by reference to EF Rev 03; there are no changes that impact this report. (7) Tabular summary level engineering values (i.e., staffing, wastes, emissions, resources, and land use) for the reference design and the alternative design cases that address construction, emplacement operations, caretaker operations, and closure; changes, if any, are indicated on appropriate tables. (8) A description of a design concept for the complete retrieval and storage of waste packages, and summary-level engineering quantities for the construction and operation of this concept, is included as Attachment I; there are no changes that impact this report. (9) The concept for a 10,000 metric tons heavy metal (MTHM) Waste Staging Facility (Attachment II) has been deleted. The addition of four spent fuel assembly (SFA) staging pools in the Waste Handling Building (WHB) is described herein. (10) Description of a design concept for an on-site Cask Maintenance Facility to provide for shipping cask repair and recertification (Attachment III) is by reference to EF Rev 03; there are no changes that impact this report. (11) Figures that have changed for the SR effort are included in Attachment IV. Unchanged figures are referenced from EF Rev 03. (12) A preliminary design concept for dry vault inventory of commercial spent nuclear fuel to support thermal blending of spent fuel assemblies in waste packages has been added as Attachment V for this supplement.

  3. Damage from the impacts of small asteroids

    SciTech Connect (OSTI)

    Hills, J.G.; Goda, M.P.

    1996-08-15T23:59:59.000Z

    The fragmentation of a small asteroid in the atmosphere greatly increases its aerodynamic drag and rate of energy dissipation. The differential atmospheric pressure across it disperses its fragments at a velocity that increases with atmospheric density and impact velocity and decreases with asteroid density. Extending our previous work, we use a spherical atmosphere and a fitted curve to its density profile to find the damage done by an asteroid entering the atmosphere at various zenith angles. In previous work we estimated the blast damage by scaling from data on nuclear explosions in the atmosphere during the 1940s, 1950s and early 1960s. This underestimated the blast from asteroid impacts because nuclear fireballs radiate away a larger fraction of their energy than do meteors, so less of their energy goes into the blast wave. We have redone the calculations to allow for this effect. We have found the area of destruction around the impact point in which the over pressure in the blast wave exceeds 4 pounds/inch{sup 2} = 2.8 X 10{sup 5} dynes/cm{sup 3}, which is enough to knock over trees and destroy buildings. About every 100 years an impactor should blast an area of 300 km{sup 2} or more somewhere on the land area of Earth. The optical flux from asteroids 60 meters or more in diameter is enough to ignite pine forests. However, the blast from an impacting asteroid goes beyond the radius within which the fire starts. It tends to blow out the fire, so it is likely that the impact will char the forest (as at Tunguska), but it will not produce a sustained fire. Because of the atmosphere, asteroids less than about 200 m in diameter are not effective in producing craters and earthquakes. They are also not effective in producing water waves and tsunami in ocean impacts. Tsunami is probably the most devastating type of damage for asteroids that are between 200 meters and 1 km in diameter.

  4. A Non-Proliferating Fuel Cycle: No Enrichment, Reprocessing or Accessible Spent Fuel - 12375

    SciTech Connect (OSTI)

    Parker, Frank L. [Vanderbilt University (United States)

    2012-07-01T23:59:59.000Z

    Current fuel cycles offer a number of opportunities for access to plutonium, opportunities to create highly enriched uranium and access highly radioactive wastes to create nuclear weapons and 'dirty' bombs. The non-proliferating fuel cycle however eliminates or reduces such opportunities and access by eliminating the mining, milling and enrichment of uranium. The non-proliferating fuel cycle also reduces the production of plutonium per unit of energy created, eliminates reprocessing and the separation of plutonium from the spent fuel and the creation of a stream of high-level waste. It further simplifies the search for land based deep geologic repositories and interim storage sites for spent fuel in the USA by disposing of the spent fuel in deep sub-seabed sediments after storing the spent fuel at U.S. Navy Nuclear Shipyards that have the space and all of the necessary equipment and security already in place. The non-proliferating fuel cycle also reduces transportation risks by utilizing barges for the collection of spent fuel and transport to the Navy shipyards and specially designed ships to take the spent fuel to designated disposal sites at sea and to dispose of them there in deep sub-seabed sediments. Disposal in the sub-seabed sediments practically eliminates human intrusion. Potential disposal sites include Great Meteor East and Southern Nares Abyssal Plain. Such sites then could easily become international disposal sites since they occur in the open ocean. It also reduces the level of human exposure in case of failure because of the large physical and chemical dilution and the elimination of a major pathway to man-seawater is not potable. Of course, the recovery of uranium from sea water and the disposal of spent fuel in sub-seabed sediments must be proven on an industrial scale. All other technologies are already operating on an industrial scale. If externalities, such as reduced terrorist threats, environmental damage (including embedded emissions), long term care, reduced access to 'dirty' bomb materials, the social and political costs of siting new facilities and the psychological impact of no solution to the nuclear waste problem, were taken into account, the costs would be far lower than those of the present fuel cycle. (authors)

  5. Sub-micrometer scale minor element mapping in interplanetary dust particles: a test for stratospheric contamination

    SciTech Connect (OSTI)

    Flynn, G.J.; Keller, L.P.; Sutton, S.R. (SUNYP); (NASA); (UC)

    2006-12-11T23:59:59.000Z

    We mapped the spatial distribution of minor elements including K, Mn, and Zn in 3 IDPs and found no evidence for the surface coatings (rims) of these elements that would be expected if the enrichments previously reported were due to contamination. Combined X-ray microprobe (XRM), energy dispersive x-ray fluorescence using a Transmission Electron Microscope (TEM), and electron microprobe measurements have determined that the average bulk chemical composition of the interplanetary dust particles (IDPs) collected from the Earth's stratosphere is enriched relative to the CI meteorite composition by a factor of 2 to 4 for carbon and for the moderately volatile elements Na, K, P, Mn, Cu, Zn, Ga, Ge, and Se, and enriched to {approx}30 times CI for Br. However, Jessberger et al., who have reported similar bulk enrichments using Proton Induced X-ray Emission (PIXE), attribute the enrichments to contamination by meteor-derived atmospheric aerosols during the several weeks these IDPs reside in the Earth's atmosphere prior to collection. Using scanning Auger spectroscopy, a very sensitive surface analysis technique, Mackinnon and Mogk have observed S contamination on the surface of IDPs, presumably due to the accretion of sulfate aerosols during stratospheric residence. But the S-rich layer they detected was so thin ({approx}100 angstroms thick) that the total amount of S on the surface was too small to significantly perturb the bulk S-content of a chondritic IDP. Stephan et al. provide support for the contamination hypothesis by reporting the enrichment of Br on the edges of the IDPs using Time-of-Flight Secondary-Ion Mass-Spectrometry (TOF-SIMS), but TOF-SIMS is notorious for producing false edge-effects, particularly on irregularly-shaped samples like IDPs. Sutton et al. mapped the spatial distribution of Fe, Ni, Zn, Br, and Sr, at the {approx}2 {micro}m scale, in four IDPs using element-specific x-ray fluorescence (XRF) computed microtomography. They found the moderately volatile elements Zn and Br, although spatially inhomogeneous, were not concentrated on the surface of any of the IDPs they examined, suggesting that the Zn and the Br enrichments in the IDPs are not due to contamination during stratospheric residence.

  6. Hydrothermal flow systems in the Midcontinent Rift: Oxygen and hydrogen isotopic studies of the North Shore Volcanic Group and related hypabyssal sills, Minnesota

    SciTech Connect (OSTI)

    Park, Y.R.; Ripley, E.M. [Indiana Univ., Bloomington, IN (United States). Dept. of Geological Sciences] [Indiana Univ., Bloomington, IN (United States). Dept. of Geological Sciences

    1999-06-01T23:59:59.000Z

    Rift-related lavas of the North Shore Volcanic Group (NSVG) are intruded by plutonic rocks of the Duluth Complex along the unconformity between the NSVG and the underlying Proterozoic metasedimentary rocks (Animikie Group) and Archean volcano-sedimentary and plutonic rocks. Heat associated with the emplacement of the mafic intrusions generated fluid flow in the overlying plateau lavas. {delta}{sup 18}O values for whole rocks from the NSVG and hypabyssal sills range from 5.5 to 17.7{per_thousand} and 5.3 to 11.5{per_thousand}, respectively, and most values are higher than those considered normal for basaltic rocks (5.4 to 6.0{per_thousand}). In general, there is a positive correlation between whole rock {delta}{sup 18}O and water content, which suggests that elevated {delta}{sup 18}O values are related primarily to secondary mineral growth and isotopic exchange during hydrothermal alteration and metamorphism. {delta}{sup 18}O{sub H{sub 2}O} values computed from amygdule-filling minerals such as smectite, chlorite, and epidote found in low- to high-temperature metamorphic zones range from {approximately}{minus}1 to 6{per_thousand} with an average value of {approximately}3{per_thousand}. Smectite in the lower-grade zones gives computed {delta}D{sub H{sub 2}O} values between {minus}26 and {minus}83{per_thousand}, whereas epidote in the higher-grade zones gives {delta}D{sub H{sub 2}O} values of {minus}15 to 6{per_thousand}. Fluid isotopic compositions computed from epidote and smectite values are suggestive of the involvement of at least two fluids during the early stages of amygdule filling. Fluid {delta}D and {delta}{sup 18}O values determined from epidote at the higher metamorphic grades indicate that seawater dominated the deeper portions of the system where greenschist facies assemblages and elevated {delta}{sup 18}O values were produced in flow interiors, as well as margins. Smectite isotopic compositions suggest that meteoric water was predominant in the shallower portions of the system. The increase in {delta}{sup 18}O values of massive flow interiors with depth is interpreted as a result of rock interaction with a fluid of constant oxygen isotopic composition with increasing temperature. The stable isotopic data are supportive of previous suggestions that seawater was involved in the hydrothermal system associated with the Midcontinent Rift. Although the origin of the seawater remains problematic, it appears that marine incursions may have occurred during the late stages of Portage Lake volcanism, and periodically thereafter.

  7. Heterogeneous Shallow-Shelf Carbonate Buildups in the Paradox Basin, Utah and Colorado: Targets for Increased Oil Production and Reserves Using Horizontal Drilling Techniques

    SciTech Connect (OSTI)

    Thomas C. Chidsey; Kevin McClure; Craig D. Morgan

    2003-10-05T23:59:59.000Z

    The Paradox Basin of Utah, Colorado, Arizona, and New Mexico contains nearly 100 small oil fields producing from carbonate buildups within the Pennsylvanian (Desmoinesian) Paradox Formation. These fields typically have one to 10 wells with primary production ranging from 700,000 to 2,000,000 barrels (111,300-318,000 m{sup 3}) of oil per field and a 15 to 20 percent recovery rate. At least 200 million barrels (31.8 million m{sup 3}) of oil will not be recovered from these small fields because of inefficient recovery practices and undrained heterogeneous reservoirs. Several fields in southeastern Utah and southwestern Colorado are being evaluated as candidates for horizontal drilling and enhanced oil recovery from existing vertical wells based upon geological characterization and reservoir modeling case studies. Geological characterization on a local scale is focused on reservoir heterogeneity, quality, and lateral continuity, as well as possible reservoir compartmentalization, within these fields. This study utilizes representative cores, geophysical logs, and thin sections to characterize and grade each field's potential for drilling horizontal laterals from existing development wells. The results of these studies can be applied to similar fields elsewhere in the Paradox Basin and the Rocky Mountain region, the Michigan and Illinois Basins, and the Midcontinent region. This report covers research activities for the first half of the fourth project year (April 6 through October 5, 2003). The work included (1) analysis of well-test data and oil production from Cherokee and Bug fields, San Juan County, Utah, and (2) diagenetic evaluation of stable isotopes from the upper Ismay and lower Desert Creek zones of the Paradox Formation in the Blanding sub-basin, Utah. Production ''sweet spots'' and potential horizontal drilling candidates were identified for Cherokee and Bug fields. In Cherokee field, the most productive wells are located in the thickest part of the mound facies of the upper Ismay zone, where microporosity is well developed. In Bug field, the most productive wells are located structurally downdip from the updip porosity pinch out in the dolomitized lower Desert Creek zone, where micro-box-work porosity is well developed. Microporosity and micro-box-work porosity have the greatest hydrocarbon storage and flow capacity, and potential horizontal drilling target in these fields. Diagenesis is the main control on the quality of Ismay and Desert Creek reservoirs. Most of the carbonates present within the lower Desert Creek and Ismay have retained a marine-influenced carbon isotope geochemistry throughout marine cementation as well as through post-burial recycling of marine carbonate components during dolomitization, stylolitization, dissolution, and late cementation. Meteoric waters do not appear to have had any effect on the composition of the dolomites in these zones. Light oxygen values obtained from reservoir samples for wells located along the margins or flanks of Bug field may be indicative of exposure to higher temperatures, to fluids depleted in {sup 18}O relative to sea water, or to hypersaline waters during burial diagenesis. The samples from Bug field with the lightest oxygen isotope compositions are from wells that have produced significantly greater amounts of hydrocarbons. There is no significant difference between the oxygen isotope compositions from lower Desert Creek dolomite samples in Bug field and the upper Ismay limestones and dolomites from Cherokee field. Carbon isotopic compositions for samples from Patterson Canyon field can be divided into two populations: isotopically heavier mound cement and isotopically lighter oolite and banded cement. Technology transfer activities consisted of exhibiting a booth display of project materials at the annual national convention of the American Association of Petroleum Geologists, a technical presentation, a core workshop, and publications. The project home page was updated on the Utah Geological Survey Internet web site.

  8. Water Management Strategies for Improved Coalbed Methane Production in the Black Warrior Basin

    SciTech Connect (OSTI)

    Pashin, Jack; McIntyre-Redden, Marcella; Mann, Steven; Merkel, David

    2013-10-31T23:59:59.000Z

    The modern coalbed methane industry was born in the Black Warrior Basin of Alabama and has to date produced more than 2.6 trillion cubic feet of gas and 1.6 billion barrels of water. The coalbed gas industry in this area is dependent on instream disposal of co-produced water, which ranges from nearly potable sodium-bicarbonate water to hypersaline sodium-chloride water. This study employed diverse analytical methods to characterize water chemistry in light of the regional geologic framework and to evaluate the full range of water management options for the Black Warrior coalbed methane industry. Results reveal strong interrelationships among regional geology, water chemistry, and gas chemistry. Coalbed methane is produced from multiple coal seams in Pennsylvanian-age strata of the Pottsville Coal Interval, in which water chemistry is influenced by a structurally controlled meteoric recharge area along the southeastern margin of the basin. The most important constituents of concern in the produced water include chlorides, ammonia compounds, and organic substances. Regional mapping and statistical analysis indicate that the concentrations of most ionic compounds, metallic substances, and nonmetallic substances correlate with total dissolved solids and chlorides. Gas is effectively produced at pipeline quality, and the only significant impurity is N{sub 2}. Geochemical analysis indicates that the gas is of mixed thermogenic-biogenic origin. Stable isotopic analysis of produced gas and calcite vein fills indicates that widespread late-stage microbial methanogenesis occurred primarily along a CO{sub 2} reduction metabolic pathway. Organic compounds in the produced water appear to have helped sustain microbial communities. Ammonia and ammonium levels increase with total dissolved solids content and appear to have played a role in late-stage microbial methanogenesis and the generation of N{sub 2}. Gas production tends to decline exponentially, whereas water production tends to decline hyperbolically. Hyperbolic decline indicates that water volume is of greatest concern early in the life of a coalbed methane project. Regional mapping indicates that gas production is controlled primarily by the ability to depressurize permeable coal seams that are natively within the steep part of the adsorption isotherm. Water production is greatest within the freshwater intrusion and below thick Cretaceous cover strata and is least in areas of underpressure. Water management strategies include instream disposal, which can be applied effectively in most parts of the basin. Deep disposal may be applicable locally, particularly where high salinity limits the ability to dispose into streams. Artificial wetlands show promise for the management of saline water, especially where the reservoir yield is limited. Beneficial use options include municipal water supply, agricultural use, and industrial use. The water may be of use to an inland shrimp farming industry, which is active around the southwestern coalbed methane fields. The best opportunities for beneficial use are reuse of water by the coalbed methane industry for drilling and hydraulic fracturing. This research has further highlighted opportunities for additional research on treatment efficiency, the origin of nitrogen compounds, organic geochemistry, biogenic gas generation, flow modeling, and computer simulation. Results of this study are being disseminated through a vigorous technology transfer program that includes web resources, numerous presentations to stakeholders, and a variety of technical publications.

  9. Porosity and surface area evolution during weathering of two igneous rocks

    SciTech Connect (OSTI)

    Navarre-Sitchler, Alexis [Colorado School of Mines, Golden; Cole, David [Ohio State University; Rother, Gernot [ORNL; Jin, Lixin [University of Texas, El Paso; Buss, Heather [University of Bristol, UK; Brantley, S. L. [Pennsylvania State University, University Park, PA

    2013-01-01T23:59:59.000Z

    During weathering, rocks release nutrients and storewater vital for growth ofmicrobial and plant life. Thus, the growth of porosity as weathering advances into bedrock is a life-sustaining process for terrestrial ecosystems. Here, we use small-angle and ultra small-angle neutron scattering to show how porosity develops during initial weathering under tropical conditions of two igneous rock compositions, basaltic andesite and quartz diorite. The quartz diorite weathers spheroidally while the basaltic andesite does not. The weathering advance rates of the two systems also differ, perhaps due to this difference in mechanism, from 0.24 to 100 mm kyr1, respectively. The scattering data document how surfaces inside the feldspar-dominated rocks change as weathering advances into the protolith. In the unaltered rocks, neutrons scatter fromtwo types of featureswhose dimensions vary from6 nmto 40 lm: pores and bumps on pore grain surfaces. These features result in scattering data for both unaltered rocks that document multi-fractal behavior: scattering is best described by amass fractal dimension (Dm) and a surface fractal dimension (Ds) for features of length scales greater than and less than 1 lm, respectively. In the basaltic andesite, Dm is approximately 2.9 and Ds is approximately 2.7. The mechanism of solute transport during weathering of this rock is diffusion. Porosity and surface area increase from 1.5%to 8.5%and 3 to 23 m2 g1 respectively in a relatively consistent trend across themm-thick plagioclase reaction front. Across this front, both fractal dimensions decrease, consistentwith development of amoremonodisperse pore networkwith smoother pore surfaces. Both changes are consistent largely with increasing connectivity of pores without significant surface roughening, as expected for transport-limited weathering. In contrast, porosity and surface area increase from 1.3% to 9.5% and 1.5 to 13 m2 g1 respectively across a many cm-thick reaction front in the spheroidally weathering quartz diorite. In that rock, Dm is approximately 2.8 andDs is approximately 2.5 prior to weathering. These two fractals transform during weathering to multiple surface fractals as micro-cracking reduces the size of diffusion-limited subzones of thematrix.Across the reaction front of plagioclase in the quartz diorite, the specific surface area and porosity change very little until the pointwhere the rock disaggregates into saprolite. The different patterns in porosity development of the two rocks are attributed to advective infiltration plus diffusion in the rock that spheroidally fractures versus diffusion-only in the rock that does not. Fracturing apparently diminishes the size of the diffusion-limited parts of the spheroidally weathering rock system to promote infiltration of meteoric fluids, thereforeexplaining the faster weathering advance rate into that rock.

  10. The Origin of Apollo Objects

    SciTech Connect (OSTI)

    Perlmutter, Saul

    1984-03-29T23:59:59.000Z

    The source of the Earth-orbit-crossing asteroids has been much debated. (This class of asteroidal bodies includes the Apollo, Aten, and some Amor objects, each with its own orbital characteristics; we shall use the term Apollo objects to mean all Earth-crossers.) It is difficult to find a mechanism which would create new Apollo objects at a sufficient rate to balance the loss due to collision with planets and ejection from the solar system, and thus explain the estimated steady-state number. A likely source is the main asteroid belt, since it has similar photometric characteristics. There are gaps in the main belt which correspond to orbits resonant with the orbits of Jupiter and Saturn, and it has been shown that the resonances can perturb a body into an Earth-crossing orbit. Apollo objects could thus be generated when random collisions between asteroids in the main belt sent fragments into these resonant orbits. Calculations of the creation rate from these random collisions, however, yielcl numbers too low by a factor of four. This rate could be significantly lower given the uncertainty in the efficiency of the resonance mechanism. As an alternative, it was suggested that the evaporation of a comet's volatile mantle as it passes near the sun could provide enough non-gravitational force to move the comet into an orbit with aphelion inside of Jupiter's orbit, and thus safe from ejection from the solar system. The probability of such an event occurring is unknown, although the recent discovery of the 'asteroid' 1983 TB, with an orbit matching that of the Geminid meteor shower, suggests that such a mechanism has occurred at least once. New evidence from paleontology and geophysics, however, suggests a better solution to the problem of the source of the Apollos. M. Davis, P. Hut, and R. A. Muller recently proposed that an unseen companion to the sun passes through the Oort cloud every 28 million years, sending a shower of comets to the Earth; this provides an explanation for the periodicity of the fossil record of extinctions found by D. M. Raup and J. J. Sepkoski. W. Alvarez and R. A. Muller have shown that the craters on the earth have an age distribution with a periodicity and phase consistent with this hypothesis. These periodic comet showers would of course pass through the entire solar system, colliding with other bodies besides the earth. When the target is the asteroid belt, many small comets will have sufficient kinetic energy to disrupt large asteroids. This will generate many more fragments in the resonant orbits than would be generated by random collisions of asteroids with each other, and hence more Apollo objects. In this report, we shall calculate approximately (A) the number of comets per shower which cross the asteroid belt, (B) the probability of collisions with a single asteroid per shower, (C) the number of fragments with radius > 0.5 km which reach Apollo orbits, and (D) the current expected number of Apollos derived from comet/asteroid collisions. Given conservative assumptions, the calculated number is in agreement with observations.

  11. T Tank Farm Interim Surface Barrier Demonstration - Vadose Zone Monitoring FY09 Report

    SciTech Connect (OSTI)

    Zhang, Z. F.; Strickland, Christopher E.; Field, Jim G.; Parker, Danny L.

    2010-01-01T23:59:59.000Z

    DOE’s Office of River Protection constructed a temporary surface barrier over a portion of the T Tank Farm as part of the T Farm Interim Surface Barrier Demonstration Project. As part of the demonstration effort, vadose zone moisture is being monitored to assess the effectiveness of the barrier at reducing soil moisture. A solar-powered system was installed to continuously monitor soil water conditions at four locations (i.e., instrument Nests A, B, C, and D) beneath the barrier and outside the barrier footprint as well as site meteorological conditions. Nest A is placed in the area outside the barrier footprint and serves as a control, providing subsurface conditions outside the influence of the surface barrier. Nest B provides subsurface measurements to assess surface-barrier edge effects. Nests C and D are used to assess changes in soil-moisture conditions beneath the interim surface barrier. Each instrument nest is composed of a capacitance probe (CP) with multiple sensors, multiple heat-dissipation units (HDUs), and a neutron probe (NP) access tube. The monitoring results in FY09 are summarized below. The solar panels functioned normally and could provide sufficient power to the instruments. The CP in Nest C after September 20, 2009, was not functional. The CP sensors in Nest B after July 13 and the 0.9-m CP sensor in Nest D before June 10 gave noisy data. Other CPs were functional normally. All the HDUs were functional normally but some pressure-head values measured by HDUs were greater than the upper measurement-limit. The higher-than-upper-limit values might be due to the very wet soil condition and/or measurement error but do not imply the malfunction of the sensors. Similar to FY07 and FY08, in FY09, the soil under natural conditions (Nest A) was generally recharged during the winter period (October-March) and discharged during the summer period (April-September). Soil water conditions above about 1.5-m to 2-m depth from all three types of measurements (i.e., CP, NP and HDU) showed relatively large variation during the seasonal wetting-drying cycle. For the soil below 2-m depth, the seasonal variation of soil water content was relatively small. The construction of the surface barrier was completed in April 2008. In the soil below the surface barrier (Nests C and D), the CP measurements showed that water content at the soil between 0.6-m and 2.3-m depths was very stable, indicating no climatic impacts on soil water condition beneath the barrier. The NP-measured water content showed that soil water drainage seemed occurring in the soil between about 3.4 m (11 ft) and 9.1 m (30 ft) in FY09. The HDU-measured water pressure decreased consistently in the soil above 5-m depth, indicating soil water drainage at these depths of the soil. In the soil below the edge of the surface barrier (Nest B), the CP-measured water content was relatively stable through the year except at the 0.9-m depth; the NP-measured water content showed that soil water drainage was occurring in the soil between about 3.4 m (11 ft) and 9.1 m (30 ft) but at a slightly smaller magnitude than those in Nests C and D; the HDU-measurements show that the pressure head changes in FY09 in Nest B were less than those for C and D but more than those for A. The soil-water-pressure head was more sensitive to soil water regime changes under dry conditions. In the soil beneath the barrier, the theoretical steady-state values of pressure head is equal to the negative of the distance to groundwater table. Hence, it is expected that, in the future, while the water content become stable, the pressure head will keep decreasing for a long time (e.g., many years). These results indicate that the T Tank Farm surface barrier was performing as expected by intercepting the meteoric water from infiltrating into the soil and the soil was becoming drier gradually. The barrier also has some effects on the soil below the barrier edge but at a reduced magnitude.

  12. T-TY Tank Farm Interim Surface Barrier Demonstration - Vadose Zone Monitoring FY10 Report

    SciTech Connect (OSTI)

    Zhang, Z. F.; Strickland, Christopher E.; Field, Jim G.; Parker, Danny L.

    2011-01-24T23:59:59.000Z

    The U.S. Department of Energy’s Office of River Protection has constructed interim surface barriers over a portion of the T and TY tank farms as part of the Interim Surface Barrier Demonstration Project. The interim surface barriers (hereafter referred to as the surface barriers or barriers) are designed to minimize the infiltration of precipitation into the soil zones containing radioactive contaminants and minimize the movement of the contaminants. As part of the demonstration effort, vadose zone moisture is being monitored to assess the effectiveness of the barriers at reducing soil moisture. Solar-powered systems were installed to continuously monitor soil water conditions at four locations in the T (i.e., instrument Nests TA, TB, TC, and TD) and the TY (i.e., instrument Nests TYA and TYB) Farms beneath the barriers and outside the barrier footprint as well as site meteorological conditions. Nests TA and TYA are placed in the area outside the barrier footprint and serve as controls, providing subsurface conditions outside the influence of the surface barriers. Nest TB provides subsurface measurements to assess surface-barrier edge effects. Nests TC, TD, and TYB are used to assess changes in soil-moisture conditions beneath the interim surface barriers. Except for occasional times for TC and TD and planned dates for TYB, during FY10, the battery voltage at the TMS and instrument Nests in both T and TY tank farms remained above 12.0 V, denoting that the battery voltages were sufficient for the stations to remain functional. All the HDUs were functioning normally, but some pressure-head values were greater than the upper measurement limit. The values that exceeded the upper limit may indicate wet soil conditions and/or measurement error, but they do not imply a malfunction of the sensors. Similar to FY07 through FY09, in FY10, the soil under natural conditions in the T Farm (Nest TA) was generally recharged during the winter period (October–March), and they discharged during the summer period (April–September). Soil water conditions above about 1.5-m to 2-m depth from all three types of measurements (i.e., CP, NP, and HDU) showed relatively large variation during the seasonal wetting-drying cycle. For the soil below 2-m depth, the seasonal variation of soil water content was relatively small. The construction of the TISB was completed in April 2008. In the soil below the TISB (Nests TC and TD), the CP-measured water content showed that ? at the soil between 0.6-m and 2.3-m depths was stable, indicating no climatic impacts on soil water conditions beneath the barrier. The NP-measured water content in the soil between about 3.4 m (11 ft) and 12.2 m (40 ft) since the completion of the barrier decreased by 0.007 to 0.014 m3 m-3. The HDU-measured soil-water pressure at 1-m, 2-m, and 5-m depths decreased by 0.7 to 2.4 m, indicating soil water drainage at these depths of the soil. In the soil below the edge of the TISB (Nest TB), the CP-measured water content was relatively stable through the year; the NP-measured water content showed that soil water drainage was occurring in the soil between about 3.4 m (11 ft) and 12.2 m (40 ft) but at a slightly smaller magnitude than in Nests TC and TD; the HDU-measurements show that the pressure head changes at Nest TB since the completion of the barrier were generally less than those at TC and TD, but more than those at TA. These results indicate that the TISB is performing as expected by intercepting the meteoric water from infiltrating into the soil, and the soil is becoming drier gradually. The barrier also had some effects on the soil below the barrier edge, but at a reduced magnitude. There was no significant difference in soil-water regime between the two nests in the TY tank farm because the barrier at the TY Farm was just completed one month before the end of the FY.