National Library of Energy BETA

Sample records for molts edas meteor

  1. (Electronic Design Automation, EDA)

    E-Print Network [OSTI]

    Hung, Shih-Hao

    ) ( DACICCAD) ACM ISPD ( , , , ) IEEE/ACM ICCAD Prof. Margarida Jacome Memorial Award ACM/SIGDA CADathlon of Integrated Circuits and Systems (TCAD) ( ) IEEE/ACM ICCAD (Executive Committee) ( -- ) IEEE/ACM ASP-DAC ( )ACM/ SIGDA ( )IEEE CEDA ( ) EDA EDA ACM ISPD (International Symposium on Physical

  2. Unifying Mechanisms of Developmental Timing: Genetic and Molecular Analysis of the Molting Cycle Timer of Caenorhabditis elegans

    E-Print Network [OSTI]

    Monsalve, Gabriela Carolina

    2013-01-01

    oscillator that drives molting cycles. The proposed moltingmechanisms also drive the molting cycles of C. elegans. Ifthe hormone that drives the molting cycle remains elusive,

  3. Unifying Mechanisms of Developmental Timing: Genetic and Molecular Analysis of the Molting Cycle Timer of Caenorhabditis elegans

    E-Print Network [OSTI]

    Monsalve, Gabriela Carolina

    2013-01-01

    of larval molts. Ancillary factors of the molting timerII), the examination of ancillary components of the moltingRORa and REV-ERB, and other ancillary components. 12 PER and

  4. MOLT IN THE NORTHERN FUR SEAL by Victor B. Scheffer and Ancel M. Johnson

    E-Print Network [OSTI]

    Molt in relation to age, sex, and season 5 Persistence of old-generation guard hairs after the molt 15 Persistence of old-generation underfur fibers after the molt 19 Changes in depth of the pelage 22 Changes in the adult female and 68 in the adult male. In 120 seals of various ages and both sexes, the mean count

  5. A Brief Essay on Software Testing Antonia Bertolino, Eda Marchetti

    E-Print Network [OSTI]

    Kundu, Sukhamay

    1 A Brief Essay on Software Testing Antonia Bertolino, Eda Marchetti Abstract-- Testing of the delivered product strictly depend. Testing is not limited to the detection of "bugs" in the software overview of software testing, from its definition to its organization, from test levels to test techniques

  6. EDA for Secure and Dependable Cybercars: Challenges and Opportunities

    E-Print Network [OSTI]

    EDA for Secure and Dependable Cybercars: Challenges and Opportunities Farinaz Koushanfar Electrical, but is also driven by the unprecedented levels of intra- and inter-car connections and communications as well they provide a gateway between modern cars and their surroundings (e.g., traffic lights), devices (e

  7. 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

  8. Toward Quality EDA Tools and Tool Flows Through High-Performance Computing

    E-Print Network [OSTI]

    Markov, Igor

    more sophis- ticated and are held to increasing standards of quality. New- generation EDA tools must hardware to logistical tasks, i.e., the speedy collection, reporting and analysis of empirical re- sults immediately. The value of quality control is underlined by economical considerations. EDA tools are much more

  9. Distinct impacts of Eda and Edar loss of function on the mouse dentition 

    E-Print Network [OSTI]

    Charles, Cyril; Pantalacci, Sophie; Tafforeau, Paul; Headon, D; Laudet, Vincent; Viriot, Laurent

    2009-01-01

    The Eda-A1-Edar signaling pathway is involved in the development of organs with an ectodermal origin, including teeth. In mouse, mutants are known for both the ligand, Eda-A1 (Tabby), and the receptor, Edar (Downless). The ...

  10. Vanilla turbulence seen by PCI in L-and EDA H-mode

    E-Print Network [OSTI]

    Basse, Nils Plesner

    Alcator C-Mod Vanilla turbulence seen by PCI in L- and EDA H-mode Nils P. Basse MIT Plasma Science 2D Fourier transforms on the PCI data from all 32 channels, we arrive at frequency. Red triangles are EDA H-mode. #12;Alcator C-Mod Correlation between PCI and D/poloidal magnetic field

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

    E-Print Network [OSTI]

    Miller, Mark Wayne

    1991-01-01

    on molting Pacific black brant near Teshekpuk Lake, Alaska. Locations of 18, 118 brant were digitized into the model based on 10 years of aerial survey data. Bell 206 and Bell 412 helicopters were simulated flying across the molting grounds along various... Bell 412 around the northezn edge, 1-mile inland parallel to the coast 50 times/day, could cause heavy weight loss to 25% of the molting population. iv ACKNOWLEDGEMENTS I thank Dr. Milton W. Weller for the opportunity to study under his...

  12. On the interaction of radio waves with meteoric plasma

    E-Print Network [OSTI]

    Luigi Foschini

    2001-12-16

    In this paper, a meteoric plasma is analyzed from a physical viewpoint, with particular emphasis on its interaction with radio waves. The attention is drawn to some macroscopic characteristics of a meteoric plasma and it is shown that the electron-ion collision frequency is not negligible, as commonly thought.

  13. 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)

    2013-03-15

    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.

  14. High fiber low energy diet for molt induction in laying hens: the impact of alfalfa on physiology, immunology and behavior 

    E-Print Network [OSTI]

    Dunkley, Claudia Sharene

    2009-05-15

    Feed withdrawal is commonly used by commercial egg producers to induce molt and stimulate multiple egg-laying cycles in their flocks. However, the practice can compromise the welfare of the birds by elevating stress, suppressing the immune response...

  15. EDA221 Introduction to Computer Graphics, 2013 Assignment 1 Solar System

    E-Print Network [OSTI]

    EDA221 ­ Introduction to Computer Graphics, 2013 Assignment 1 ­ Solar System In this assignment you-definition. This will instruct the precompiler to use solar system.cpp as the main program. Before com- piling however, some code needs to be written. Solar System Create your own model of the solar system

  16. Meteoritics & Planetary Science 37, 12091222 (2002) Available online at http://www.uark.edu/meteor

    E-Print Network [OSTI]

    Head III, James William

    2002-01-01

    ://www.uark.edu/meteor © Meteoritical Society, 2002. Printed in USA. 1209 Prelude preprint MS#4734 Identification of mercurian volcanism

  17. TV Meteor Observations from Modra J. Toth L. Kornos S. Gajdos D. Kalmancok

    E-Print Network [OSTI]

    Veres, Peter

    results of single-station observation using the new fish-eye TV system, as well as double station TV observation of the Geminids 2006 shower. The fixed fish-eye TV system was developed for monitoring meteor the UFOAnalyser software. Keywords Fish-eye lenses Á Meteor shower Á TV meteor observations 1 Introduction

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

    E-Print Network [OSTI]

    Boyer, Edmond

    9-11 April 2008 ©EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5 Micro-electroforming Metallic, National Chung Hsing University, Taiwan 402 Abstract- This paper describes the development of metallic bipolar plate fabrication using micro-electroforming process for mini-DMFC (direct methanol fuel cell

  19. Space weather effects on the Mars ionosphere due to solar flares and meteors

    E-Print Network [OSTI]

    Withers, Paul

    Space weather effects on the Mars ionosphere due to solar flares and meteors P. Withers (1), M observed two aspects of space weather at Mars. Following solar flares of both moderate to strong magnitude

  20. Evaluation of the use of alfalfa diets as an alternative to feed deprivation for the induction of molt in commercial laying chickens 

    E-Print Network [OSTI]

    Landers, Kristin Lynn

    2004-11-15

    provide available energy for the hens, while still inducing a molt that is economically advantageous to producers. Alfalfa, provided in meal or pelleted form, provides only 1/2 the metabolizable energy and 1/4 of the calcium required of a laying hen...

  1. An estimate of strong local body forcing and gravity wave radiation based on OH airglow and meteor radar observations

    E-Print Network [OSTI]

    Vadas, Sharon

    with an OH airglow imager and the meteor radar at the MU Observatory in Japan. This was a wave breaking event to anticipate the scales of secondary waves generated through local body forcing and their potentialAn estimate of strong local body forcing and gravity wave radiation based on OH airglow and meteor

  2. ALLSKY VIDEO OBSERVATIONS OF METEORS OVER CENTRAL EUROPE FROM MODRA. J. , L. Kornos1

    E-Print Network [OSTI]

    Veres, Peter

    . Introduction: The new fish-eye video meteor sys- tem covering substantial part of Central Europe (Fig. 1) has University, Slovakia. The system consists of a fish- eye Canon 2.4/15 mm objective, image intensifier, Meopta: The astrometry precision of this intensified fish-eye TV system is quite good. The standard deviation for more

  3. Invited Review for Asteroids/Comets/Meteors 1996 The Dynamical Structure of the Kuiper Belt

    E-Print Network [OSTI]

    Levison, Harold F.

    Invited Review for Asteroids/Comets/Meteors 1996 The Dynamical Structure of the Kuiper Belt H 1 , which was the first of over 30 Kuiper Belt objects with radii ¸ 100--200 km that have now been discovered by groundbased observations. When 1992 QB 1 was discovered, the Kuiper Belt was instantly

  4. Remote sensing lower thermosphere wind profiles using non-specular meteor echoes

    E-Print Network [OSTI]

    Oppenheim, Meers

    , this technique should produce high resolution images of lower thermospheric winds as they change in both altitude describes a new method of measuring wind velocity profiles between 93 km and 110 km altitude by tracking non 2007. Details about meteor observations with this high-power large-aperture (HPLA) radar are given by

  5. 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

  6. Meteor Trail Echo Rejection in Atmospheric Phased Array Radars Using Adaptive Sidelobe Cancellation

    E-Print Network [OSTI]

    Sato, Toru

    of power (NC-DCMP), which balances the capability of canceling the clutter and the robustness of beam February 2014, in final form 21 May 2014) ABSTRACT Strong meteor trail echoes are interferences in the wind of the signal-to-noise ratio (SNR) and inaccurate wind estimates for weak atmospheric echoes. This paper

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

    E-Print Network [OSTI]

    Whitsitt, Philip Mark

    1989-01-01

    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...

  8. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Comments? WeDatastreamstpsgovInstrumentsclapgovInstrumentsmasc Documentation

  9. 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:of theClimate Finance ReadinessNo4 PinalElectrocellDesign

  10. 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA JumpDuimen RiverScoringUtilities CommEnergy,INTAIRENAIT

  11. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse Bergkamp Graduate student Subtask2 J.N. Shadid,1 Select StartLANL analyzes

  12. Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Meteor Cruise 22/5 in the South Atlantic Ocean (WOCE Section A10, December 1992-January 1993)

    SciTech Connect (OSTI)

    Kozyr, A.

    1998-12-01

    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 the underway partial pressure of CO{sub 2} (pCO{sub 2}) during the R/V Meteor Cruise 22/5 in the South Atlantic Ocean (Section A10). Conducted as part of the World Ocean Circulation Experiment (WOCE), the cruise began in Rio de Janeiro on December 27, 1992, and ended after 36 days at sea in Capetown, South Africa, on January 31, 1993. Measurements made along WOCE Section A10 included pressure, temperature, and salinity [measured by conductivity, temperature, and depth (CTD) sensor], bottle salinity, bottle oxygen, phosphate, nitrate, nitrite, silicate, chlorofluorocarbons (CFC-1 1 , CFC-12), TCO{sub 2}, TALK, and underway pCO{sub 2}. The TCO{sub 2} was measured by using two Single-Operator Multiparameter Metabolic Analyzers (SOMMAs) for extracting CO{sub 2} from seawater samples that were coupled to a coulometer for detection of the extracted CO{sub 2}. The overall precision and accuracy of the analyses was {+-} 1.9 {micro}mol/kg. Samples collected for TALK were measured by potentiometric titration; precision was {+-}2.0 {micro}mol/kg. Underway pCO{sub 2} was measured by infrared photometry with a precision of {+-} 2.0 {micro}atm. The work aboard the R/V Meteor was supported by the U.S. Department of Energy under contract DE-AC02-76CHOO016, and the Bundesministerium fir Forschung und Technologies through grants 03F0545A and MPG 099/1.

  13. Primary feather molt of juvenile mourning doves in Texas 

    E-Print Network [OSTI]

    Morrow, Michael Eugene

    1983-01-01

    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...

  14. The effects of storage time on vitelline membrane protein banding patterns and interior egg quality of eggs from non-molted and molted hens 

    E-Print Network [OSTI]

    Kelley, Angela Jean

    2004-09-30

    Vitelline membrane strength plays a role in preventing contamination of albumen by yolk during separation and is important to food safety. Two experiments were conducted to determine if a relationship exists between vitelline membrane protein...

  15. Exempel frn frelsning 14 i EDA011/EDA017, VT2015 (Patrik Persson) P frelsning 14 diskuterade vi hastigast en lsning av tic-tac-toe-uppgiften.

    E-Print Network [OSTI]

    '), eller mellanslag om ingen vunnit */ public char getWinner() { // kolla raderna for (int r = 0; r .out.println(ttt.toString()); char winner = ttt.getWinner(); if (winner == ' ') { System.out.println("ingen vann."); } else { System

  16. Exempel frn frelsning 16 i EDA011/EDA017, VT2015 (Patrik Persson) P frelsning 16 diskuterade vi hur man hanterar grafiska figurer p ett enhetligt stt.

    E-Print Network [OSTI]

    = new SimpleWindow(500, 500, "Shapes"); for (int i = 0; i int x = rand.nextInt(500); int y = rand.nextInt(500); int k = rand.nextInt(100); // slumpa ett av två alternativ if (rand (true) { w.clear(); for (int i = 0; i Int(200), rand.nextInt

  17. molt.Stud.(19'77)43,1-rl. i 5 Arib .;*?i

    E-Print Network [OSTI]

    Marsh, Helene

    ,Queensland,481I, Australia. (Receivedl0 December1975) INTRODUCTION :iThemost remarkablemodificationof the radular in ethanol, cleared in xylene and vacuum embedded i" p"l".rr., i].ij sectlonswere cut at 5-'/ym. Two complete

  18. SEX PHEROMONE ACTIVITY OF THE MOLTING HORMONE, CRUSTECDYSONE, ON MALE CRABS

    E-Print Network [OSTI]

    constructed from 4-liter beakers. With a glass blowing torch and the edge of a carbon flat we formed an indent

  19. Meteoric diagenesis and fluid-rock interaction in the

    E-Print Network [OSTI]

    Montañez, Isabel Patricia

    in sedimentology and stratigraphy. David A. Osleger Department of Geology, University of California Davis, Davis Stratigraphy R&D, Chevron Energy Technology Company, 1500 Louisiana Street, Houston, Texas; James at the University of California Davis. His research interests include orbital stratigraphy, sea level history

  20. Friday 5 January 2001 earth: Meteors come in with a

    E-Print Network [OSTI]

    Evers, Läslo G.

    the Earth from space could be mistaken for nuclear bomb tests, say seismologists of the Royal Netherlands Meteorological Institute. This could present problems for monitoring the Comprehensive Nuclear Test Ban Treaty (CTBT), which aims to halt the testing of all nuclear weapons. Läslo Evers and Hein Haak detected

  1. The Night Sky A Super Full Moon & Meteor Shower

    E-Print Network [OSTI]

    Luttermoser, Donald G.

    and the morning of August 13. The moon phase is a thin crescent that night leaving a very dark sky, but can appear anywhere in the sky. The new moon in August will occur on the 14th , thus aiding with dark for our Astronomy open houses can be found on the web at http

  2. Dynamic Web Service Composition in METEOR-S Rohit Aggarwal, Kunal Verma, John Miller, William Milnor1

    E-Print Network [OSTI]

    Miller, John A.

    , the manufacturer would either be tightly integrated to a few suppliers or he would go to an exchange to find and optimal selection of Web services. Consider a supply-chain management scenario where a manufacturer gets suppliers. So far, the high cost of integration made it impractical for the manufacturer to integrate

  3. New diagnostic methods for infectious diseases Shigetoshi Eda, PhD

    E-Print Network [OSTI]

    Gray, Matthew

    ;9/28/2008 5 What's wrong with current antibody-detection tests? This is Volkswagen Golf. Not hard to recognize as antigens. These internal parts are shared with other types of Volkswagen cars, and interfere with our car

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

    E-Print Network [OSTI]

    Gallagher, Marcus

    of superconductive magnet configurations in Magnetic Resonance Imaging (MRI) systems as a challenging real

  5. LUNDS TEKNISKA HGSKOLA Institutionen fr datavetenskap Tentamen, EDAA20/EDA501 Programmering

    E-Print Network [OSTI]

    (och tas ut ur sin kö). Om ingen patient finns i väntrummet ska värdet null returneras. */ Patient next

  6. LUNDS TEKNISKA HGSKOLA Institutionen fr datavetenskap Lsningsfrslag till tentamen i EDAA20/EDA501

    E-Print Network [OSTI]

    .mark(nbr); } } /* Söker efter och returnerar personen med namnet name. Om ingen sådan person finns returneras null. Om ingen sådan tid finns returneras en tom lista. */ public ArrayList possible

  7. LUNDS TEKNISKA HGSKOLA Institutionen fr datavetenskap Tentamen, EDA501 Programmering M L TM W K V

    E-Print Network [OSTI]

    longitud. Latitud och longitud ges som strängar, men det spelar ingen roll för uppgiften. */ public null om ingen sådan flygplats finns. */ public Airport get(String id); /** Ger en lista med de

  8. Peromyscus mexicanus (Rodentia: Cricetidae) ANA LILIA TRUJANO-ALVAREZ AND SERGIO TICUL ALVAREZ-CASTAN~ EDA

    E-Print Network [OSTI]

    Hayssen, Virginia

    , Me´xico; sticul@cibnor.mx (STA-C) Abstract: Peromyscus mexicanus (Saussure, 1860) is a medium the tropical lowlands of Mexico to Panama and it exhibits geographic and seasonal variation in coat color. Its deermouse, Mexico, peromyscine, rodent E 26 May 2010 American Society of Mammalogists Synonymy completed 1

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

    E-Print Network [OSTI]

    Beauducel, François

    by tectonic activities (volcanic, geothermal and seismic areas, land-slide zones...).The diversity of sensors in this paper. The transducer's qualification is carried out in a laboratory where the admittance of various

  10. Unifying Mechanisms of Developmental Timing: Genetic and Molecular Analysis of the Molting Cycle Timer of Caenorhabditis elegans

    E-Print Network [OSTI]

    Monsalve, Gabriela Carolina

    2013-01-01

    Dev Cell, 2005. 9(3): p. 403-14. Schmutz, I. , et al. , Theelegans. Nature, 2000. 403(6772): p. 901-6. Hayes, G.D. ,elegans. Nature, 2000. 403(6772): p. 901-6. Harris, D.T. and

  11. Unifying Mechanisms of Developmental Timing: Genetic and Molecular Analysis of the Molting Cycle Timer of Caenorhabditis elegans

    E-Print Network [OSTI]

    Monsalve, Gabriela Carolina

    2013-01-01

    California, Los Angeles v DEDICATION To my parents, Adelmov Dedication Page………………………………………………………………………………..…vi List ofmy publication; her dedication to me and to the scientific

  12. 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 and energy density of passive micro fuel cells and galvanic hydrogen generators Robert Hahn, Stefan Wagner Abstract- A PEM micro fuel cell system is described which is based on self-breathing PEM micro fuel cells

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

    E-Print Network [OSTI]

    Boyer, Edmond

    [1]. For high-end cooling applications, two-phase heat transfer mechanism within a heat pipe provides a highly effective thermal solution. As the heat enters the evaporator section of a heat pipe, it causes along an adiabatic pipe to the cooler condenser section. As the vapor condenses, its latent heat

  14. TRANSPORT IN EDA H-MODE AND ITS RELATION TO FLUCTUATIONS AND THE MICRO-STABILITY OF THE

    E-Print Network [OSTI]

    Greenwald, Martin

    MIT Plasma Science & Fusion Center W. DORLAND University of Maryland Presented at TTF Fairbanks - May COMPONENT · Recently observed with a fast scanning magnetic probe (Not seen with standard set of fast energy transport? · How does it survive the shear layer? · Is it seen on other machines? - Why doesn

  15. Peromyscus levipes (Rodentia: Cricetidae) SERGIO TICUL A LVAREZ-CASTAN~ EDA AND NOE GONZA LEZ-RUIZ

    E-Print Network [OSTI]

    Hayssen, Virginia

    , Baja California Sur 23000, Me´xico; sticul@cibnor.mx (STA-C) Universidad Auto´noma Metropolitana, Unidad Iztapalapa, Departmento de Biologi´a, Apartado Postal 55-535, Me´xico 09340, Distrito Federal, Me´xico-183, Me´xico, Distrito Federal, 111340, Me´xico (NG-R) Abstract: Peromyscus levipes Merriam, 1898

  16. A Meteor 2006/11es szmban megjelent cikk kzirata XEphem

    E-Print Network [OSTI]

    Holl, András

    kell megadnunk. A kényelmesebbek megtalálhatják az Interneten csomagokban is: a szerz egy RedHat/Fedora

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

    E-Print Network [OSTI]

    2001-01-01

    hope to escape reproach" while defining a lexicographer as "a maker of dictionaries, a harmless drudge

  18. In 1925, the Meteor expedition set out from Germany to measure the ocean's

    E-Print Network [OSTI]

    Levin, Lisa

    and peer sideways to look through a port- hole. The vehicle's exterior lights, though powerful, illuminated, Mexico, Peru, Chile and Oman. Using data on seafloor topog- raphy and oxygen measurements from

  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

    2005-08-29

    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. 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

    2005-02-17

    or anaerobic conditions, the effects of combinating zinc and acidic conditions on the growth kinetics of Salmonella in vitro under aerobic or anaerobic conditions, and the effects of zinc amended feed on the survival of a dry inoculum of Salmonella. The third...

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

    E-Print Network [OSTI]

    Boyer, Edmond

    is the important factor in heat pipe design, and those general applications on wick structure are manufactured permeability (R) = 0.5 can have the best performance, and its heat conductivity is 20 times to a heat pipe pipe, and this design added aluminum fin to increase surface of heat dissipation. There existed

  2. Edwards, Paul N. 2013. "Predicting the Weather: A Knowledge Commons for Europe and the World," in Cornelis Disco & Eda Kranakis (eds), Cosmopolitan

    E-Print Network [OSTI]

    Edwards, Paul N.

    Edwards, Paul N. 2013. "Predicting the Weather: A Knowledge Commons for Europe and the World Press: Cambridge, MA), pp. 155-184. #12;Weather affects virtually everything people do: where of temperature. Weather affects agriculture, urban planning, government, insurance, and much else. It even gets

  3. 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

  4. EXTENSION CENTER FOR COMMUNITY VITALITY Developed with input from local, county, and regional partners. Presented in partnership with the EDA Center at

    E-Print Network [OSTI]

    Minnesota, University of

    EXTENSION CENTER FOR COMMUNITY VITALITY Developed with input from local, county, and regional Center for Community Vitality Joyce Hoelting, Assistant Director, University of Minnesota Extension Center for Community Vitality Matt Kane, Program Leader, Community Economics, University of Minnesota

  5. Geochemical evidence for meteoric diagenesis and cryptic surfaces of subaerial exposure in Upper Ordovician peritidal carbonates from

    E-Print Network [OSTI]

    Heim, Noel A.

    of subaerial exposure in marine strata. Sequence stratigraphy has provided a useful model for integrating sedi developed. Subaerial exposure, sequence stratigraphy and geochemistry Sequence stratigraphy predicts section previously studied using a sequence stratigraphic approach. Specifically, geochemical results

  6. 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

  7. Andante q=80 Copyright notices follow the score, on page 6.

    E-Print Network [OSTI]

    Bird, Peter

    - 2 #12;44 S. A. T. B. in hot dark ness- a gainst- the heart, held molt ff en- in hot dark f ness- en- in hot dark ness- a gainst- the heart, held ff molt en- in hot f dark - en - in hot dark ness- a gainst- the heart, molt ff en- a f - in hot dark ness- a gainst- the heart, held ff molt en- in hot dark f ness

  8. 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 youth, Held f molt - en in hot dark ness- a gainst- heat of her youth, Held f molt en- in hot dark ness- 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

  9. IEEE SYSTEMS JOURNAL, VOL. XX, NO. X, MONTH 2014 1 Functional Model-based Design Methodology for

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    Automation (EDA) and wire harness design tools; control engineering by LabView [27], LMS [29], Modelica [34

  10. Thank you, abstract #4660 has been submitted Click here to print this page now.

    E-Print Network [OSTI]

    , and vestibular). Electrodermal activity (EDA) and heart rate variability (HRV) data have been gathered from EDA and HRV reactivity to the sensory stimuli mentioned above. We also evaluated which small set of features derived from raw EDA and HRV waveforms were most effective at distinguishing SEN and TYP in order

  11. 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

  12. 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 ...

  13. 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

  14. 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

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

    E-Print Network [OSTI]

    these research needs for wind energy along the U.S. East Coast, both coastal and offshore, was the goal of a two research platforms O ffshore wind energy is just starting in the United States, with imminent offshore wind in the United States, offshore wind energy began more than 20 years ago in Europe and has now reached more than

  16. Camp. Biochem. Physiol. Vol. 9OA, No. 3, pp. 405-408, 1988 0300-9629/88 S3.00 + 0.00 Printed in Great Britain 0 1988 Pergamon Press plc

    E-Print Network [OSTI]

    Sokolowski, Marla

    in Great Britain 0 1988 Pergamon Press plc THE INFLUENCE OF SEASON AND pH ON MORTALITY, MOLTING AND WHOLE

  17. A survey of cross-layer power-reliability tradeoffs in multi and many core systems-on-chip

    E-Print Network [OSTI]

    2013-01-01

    and EDA tools, and embedded systems design. He is a seniorcomputer engineering and embedded systems at the computerand operating systems for embedded systems Bibiche M.

  18. Azuro Inc | Open Energy Information

    Open Energy Info (EERE)

    Azuro Inc Place: California Zip: CA 95054 Product: Azuro is a provider of electronic design automation (EDA) software for digital semiconductor chip design. References: Azuro...

  19. 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

    2011-01-01

    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.

  20. Cockroaches:Fact or Fiction? /// COCKROACH COntROl

    E-Print Network [OSTI]

    .pctonLIne.com Q:Do all cockroaches form egg cases? A:Cockroach eggs are always packaged into oothecae. SomeCockroaches:Fact or Fiction? /// COCKROACH COntROl Q:Are albino (white) cockroaches com- mon in infested homes? A:All newly molted cockroaches are white. Over the next several hours after ecdysis (molt

  1. The TLR4 agonist fibronectin extra domain A is cryptic, exposed by elastase-2; use in a fibrin matrix cancer vaccine

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

    Julier, Ziad; Martino, Mikaël M.; de Titta, Alexandre; Jeanbart, Laura; Hubbell, Jeffrey A.

    2015-02-24

    Fibronectin (FN) is an extracellular matrix (ECM) protein including numerous fibronectin type III (FNIII) repeats with different functions. The alternatively spliced FN variant containing the extra domain A (FNIII EDA), located between FNIII 11 and FNIII 12, is expressed in sites of injury, chronic inflammation, and solid tumors. Although its function is not well understood, FNIII EDA is known to agonize Toll-like receptor 4 (TLR4). Here, by producing various FN fragments containing FNIII EDA, we found that FNIII EDA's immunological activity depends upon its local intramolecular context within the FN chain. N-terminal extension of the isolated FNIII EDA with itsmore »neighboring FNIII repeats (FNIII 9-10-11) enhanced its activity in agonizing TLR4, while C-terminal extension with the native FNIII 12-13-14 heparin-binding domain abrogated it. We reveal that an elastase 2 cleavage site is present between FNIII EDA and FNIII 12. Activity of the C-terminally extended FNIII EDA could be restored after cleavage of the FNIII 12-13-14 domain by elastase 2. FN being naturally bound to the ECM, we immobilized FNIII EDA-containing FN fragments within a fibrin matrix model along with antigenic peptides. Such matrices were shown to stimulate cytotoxic CD8+ T cell responses in two murine cancer models.« less

  2. Gate Sizing and Vth Assignment for Asynchronous Circuits Using Lagrangian Relaxation

    E-Print Network [OSTI]

    Chu, Chris C.-N.

    constraints are beyond the ability of synchronous EDA tools to handle thus inferior results are generated performance. Recent asynchronous design flows try to directly leverage synchronous EDA tools to select gates, which have a lot of limitations due to the intrinsic difference between asynchronous and synchronous

  3. RTL Hardware Design Chapter 6 1 Synthesis Of VHDL Code

    E-Print Network [OSTI]

    Chu, Pong P.

    1 RTL Hardware Design Chapter 6 1 Synthesis Of VHDL Code RTL Hardware Design Chapter 6 2 Outline 1. VHDL synthesis flow 5. Timing consideration RTL Hardware Design Chapter 6 3 1. Fundamental limitation of EDA software · Can "C-to-hardware" be done? · EDA tools: ­ Core: optimization algorithms ­ Shell

  4. Atmos. Chem. Phys., 4, 817824, 2004 www.atmos-chem-phys.org/acp/4/817/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    2Jicamarca Radio Observatory, Peru 3MIT Lincoln Laboratory, MA, USA Received: 23 October 2003 of the existing meteor research has been conducted with low power meteor radars that reflect from trails

  5. 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)

    2013-12-15

    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.

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

    E-Print Network [OSTI]

    Mrofka, David Douglas

    2010-01-01

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

  7. Water balance in the amazon basin from a land surface model ensemble

    E-Print Network [OSTI]

    2014-01-01

    land surface and Earth system models. J. Hydro- meteor. ,of the Community Earth System Model (CESM; Vertenstein et

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

    E-Print Network [OSTI]

    2015-01-01

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

  9. EDA501 Programmering --vningstider VT2 2015 version 24/3 Grupp M1.01-04 Grupp M1.05-08 Grupp M1.09-12 Grupp M1.13-16 Grupp M1.17-20 Grupp BK,MD

    E-Print Network [OSTI]

    , Markus Huber, Daniel Karlsson, Jonas Härder, Linnéa Göransson, Johan Heffler, Niklas Evander, Alex, Kristoffer Nilsson, Amanda Miraljemovic, Denis Runesson, Julia Möller, Jesper Nordgren, Pascal Nylin, Malin

  10. EDA501 Programmering --vningstider VT1 2015 version 27/1 Grupp M1.01-04 Grupp M1.05-08 Grupp M1.09-12 Grupp M1.13-16 Grupp M1.17-20

    E-Print Network [OSTI]

    , Jacob Hogman, Oskar Deniz, Johan Egelberg, Linn Ericsson, Felix Davidsson, Matilda Huber, Daniel Magnusson, Sofia Nilsson, Amanda Minnhagen, Philip Runesson, Julia Månsson, Pontus Markhed Maxe, Fabian

  11. Development of Molten-Salt Heat Trasfer Fluid Technology for...

    Office of Environmental Management (EM)

    f luids molt en salt s of f er a suf f icient reduct ion in levelized energy cost s t o pursue f urt her development , and t o develop t he component s required f or t...

  12. 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

    2006-08-16

    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...

  13. L’Italia, è ancora un paese mediterraneo?

    E-Print Network [OSTI]

    Maraini, Toni

    2010-01-01

    tutela dell’ambiente e le energie rinnovabili. Dalla LiguriaSotto la spinta di queste energie erano state adottate, neiMarocco. Molte delle mie energie erano infatti soprattutto

  14. Microsoft Word - Transport-program.doc

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

    e & i Lower i Standard collisionality C-Mod EDA H-mode r mid 0.56a Kinetic electrons and ions (Turbulence near marginal stability) Plan: * Quantitative comparison...

  15. INTRODUCTION ong-term continuous monitoring of physiological data

    E-Print Network [OSTI]

    lithium-ion battery lasts over 30 hours. RESULTS A series of tests (N=24) designed to obtain an EDA a short battery life, are expensive, lack wireless capability, and are often cumbersome [1, 2]. We present

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

    E-Print Network [OSTI]

    2006-01-01

    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-

  17. SPRING 2015 RESEARCH REVIEW

    E-Print Network [OSTI]

    Garfunkel, Eric

    Yanyong Zhang INVITED TALK 2:40 ­ 3:15 PM FLEXIBLE AND EFFICIENT AUTOMOTIVE SENSING APPLICATIONS Fan Bai INDUSTRIAL ADVISORY BOARD MEETING (FOR SPONSOR REPRESENTATIVES) MAY 15, 2015 RUTGERS/EDA TECH CENTER 671

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

    E-Print Network [OSTI]

    Strauss, Marc D

    2005-01-01

    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 ...

  19. Parallel VLSI Circuit Analysis and Optimization 

    E-Print Network [OSTI]

    Ye, Xiaoji

    2012-02-14

    The prevalence of multi-core processors in recent years has introduced new opportunities and challenges to Electronic Design Automation (EDA) research and development. In this dissertation, a few parallel Very Large Scale Integration (VLSI) circuit...

  20. A Parallelized Hash Generator System

    E-Print Network [OSTI]

    EDA385 A Parallelized Hash Generator System Niklas Ald´en ael10nal@student.lu.se Gabriel J cracker uses the MD5 hash function to generate a hash from a random generated character sequence

  1. Web-enabled project management and collaboration using Microsoft Groove system 

    E-Print Network [OSTI]

    Yuksel, Kamer

    2008-10-10

    Application Service Provider CFMA Construction Financial Management Association EDA Electronic Data Interchange FTP File Transfer Protocols IT Information Technology NSPE National Society of Professional Engineers PMCS Project Management... ............................................................................................................56 5.3 Files Tool..................................................................................................................57 5.4 Forms Tool...

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

    E-Print Network [OSTI]

    2015-01-01

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

  3. Isotopic Analysis- Fluid At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    in Menlo Park, CA. Low tritium values indicated that modern water injected during drilling andor recent (<50 years) meteoric recharge did not make up a significant...

  4. Modeling dust as component minerals in the Community Atmosphere Model: development of framework and impact on radiative forcing

    E-Print Network [OSTI]

    2015-01-01

    K. : THE COMMUNITY EARTH SYSTEM MODEL, B. Am. Meteor. Soc. ,M. : The Community Earth System Model: A Framework forin the Community Earth System Model, Geo- scientific Model

  5. Space weather effects on the Mars ionosphere due to solar flares and

    E-Print Network [OSTI]

    Withers, Paul

    Space weather effects on the Mars ionosphere due to solar flares and meteors Paul Withers1, Michael in the ionospheric response to these aspects of space weather. #12;

  6. A, &s&rviCe Feature Released oh rece#pt

    E-Print Network [OSTI]

    and pamphlets. p a r t of t h i s collection was derived by bequest from the distinguished meteor- ologist Go J

  7. Application of an Equilibrium Vaporization Model to the Ablation of Chondritic and Achondritic Meteoroids

    E-Print Network [OSTI]

    Laura Schaefer; Bruce Fegley Jr

    2005-06-01

    We modeled equilibrium vaporization of chondritic and achondritic materials using the MAGMA code. We calculated both instantaneous and integrated element abundances of Na, Mg, Ca, Al, Fe, Si, Ti, and K in chondritic and achondritic meteors. Our results are qualitatively consistent with observations of meteor spectra.

  8. 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.

    Johns, R. H., D. W. Burgess, C. A. Doswell III, M. S. Gilmore, J. A. Hart, and S. F. Piltz, 2013,= DONALD W. BURGESS,= CHARLES A. DOSWELL III,* MATTHEW S. GILMORE,+ JOHN A. HART,# AND STEVEN F. PILTZ

  9. UNIVERSITAT DE BARCELONA Departament d'Astronomia i Meteorologia

    E-Print Network [OSTI]

    Estalella, Robert

    UNIVERSITAT DE BARCELONA Departament d'Astronomia i Meteorologia Star Formation in Cluster Meteorologia Bienni 2000­2002 Mem`oria presentada per Aina Palau Puigvert per optar al grau de Doctora en Ci el millor de mi: just do your best! En el Departament d'Astronomia i Meteorologia, he rebut molt per

  10. Thamnophilidae -Antbirds Antbirds are in an insectivorous family that includes many forest understory species, but some are

    E-Print Network [OSTI]

    Stouffer, Phil

    shape which has a terminal hook and a pinched base. Many species are dimorphic in plumage with males with brighter orange or buffy barring. Although sexual dichromatism is common in the family, the obligate ant through a partial first preformative molt such that young birds can be distinguished by their distinct

  11. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to

    E-Print Network [OSTI]

    BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published. Waterbirds 26(1): 88-93, 2003 Flight-feather molt in birds is of interest because it affects mobility, which

  12. Optical sensor for measuring American Lobster vitality

    SciTech Connect (OSTI)

    Tomassetti, Brian R. A.; Vetelino, John F.

    2011-06-10

    The vitality of the American Lobster (Homarus americanus) is correlated to the total hemolymph protein (THP) in lobster hemolymph (blood). The standard technique for determining lobster vitality is to draw blood from a lobster and measure THP with a refractometer. This technique is invasive and endangers the lobster's health since blood must be drawn from the lobster. In the present work an optical sensor is developed to measure a lobster's vitality in vivo. It is comprised of a broadband light source, a monochromator, a fiber optic reflection probe, a spectrometer and a computer. This sensor measures protein concentrations by exciting a lobster with 280 nm and 334 nm wavelength light sources and measuring the corresponding absorbance peaks for THP and the fluorescence peak for hemocyanin (Hc), the majority protein in hemolymph. In this work several lobsters are tested. For each lobster, absorbance and fluorescence peaks are measured using the sensor and compared to protein concentrations measured using a refractometer. It is found that the shell thickness and muscle density, which correspond directly to protein concentration and the molting stage of the lobster have a significant effect on the absorbance and fluorescence measurements. It is also found that within specific molting stages, such as pre-molt and post-molt, protein concentration measured with a refractometer correlates linearly to absorbance and fluorescence measurements with the optical sensor.

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

    E-Print Network [OSTI]

    Batiste, Oriol

    ENERGIA HIDROEL`ECTRICA Aprofitament de l'energia potencial gravitat`oria de les masses d a produ¨ir electricitat de de fa 100 anys. ´Es l'unica font renovable que contribueix de forma molt r`apida. #12;LIMITACIONS I PROBLEMES Podem realment considerar-la una font energia apropiada? Les

  14. 2015 Virginia Polytechnic Institute and State University ENTO-134NP Diptera: Calliphoridae

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    discover blow flies in the home when mature maggots leave their food source to pupate or large numbers­200 eggs in a cluster on a food source. Eggs hatch quickly into maggots, which grow and molt three times the food source in search of dry soil before pupating. Pupae resemble elongated oval capsules with a tough

  15. Hillsborough County Cooperative Extension Service

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    with mating or molting, the process that insects use to shed their shell when they outgrow it. The products - a beneficial soil fungus that secretes enzymes to dissolve an insects cuticle so that the fungus may invade the body of the insect Candida oleophila: - a fungus (yeast) that out-competes disease organisms. Currently

  16. Biological and Biochemical Characterization of a Tick Feeding Stimuli Responsive Amblyomma americanum Acidic Chitinase in Tick Feeding Physiology 

    E-Print Network [OSTI]

    Kim, Tae Kwon

    2014-04-01

    , molting in insects, and inflammation and tissue remodeling in mammals. Spatial and temporal mRNA transcript analyses show that putative AamAch-L and AamAch-S are ubiquitously expressed, with highest transcript abundance post-attachment observed at 72h...

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

    E-Print Network [OSTI]

    Lin, Youn-Long Steve

    system designer, IP vendors, EDA vendors, silicon wafer foundry, package & testing houses, and camera. On the other hand, semiconductor foundry has to expand its service scope from wafer manufacturing to mask, there is a need to bridge the gap between system houses and wafer foundry. We call such company SOC design service

  18. in tokamaks and stellarators Nils P. Basse

    E-Print Network [OSTI]

    Basse, Nils Plesner

    Alcator C-Mod Turbulence in tokamaks and stellarators Nils P. Basse MIT Plasma Science and Fusion #12;Alcator C-Mod The plasma monster #12;Alcator C-Mod · Alcator C-Mod tokamak · L- to EDA H-ModAlcator C-Mod tokamak Alcator C-Mod is a divertor tokamak with high magnetic field capability (Bt § 8 T

  19. Continuous Assessment of Epileptic Seizures with Wrist-worn Biosensors

    E-Print Network [OSTI]

    Continuous Assessment of Epileptic Seizures with Wrist-worn Biosensors by Ming-Zher Poh Bachelor;Continuous Assessment of Epileptic Seizures with Wrist-worn Biosensors by Ming-Zher Poh Submitted of a wearable electro- dermal activity (EDA) and accelerometry (ACM) biosensor, and demonstrates its clinical

  20. Galen Sasaki EE 361 University of Hawaii 1 Electronic Design Automation

    E-Print Network [OSTI]

    Sasaki, Galen H.

    1 Galen Sasaki EE 361 University of Hawaii 1 Electronic Design Automation (EDA) Galen Sasaki EE 361 University of Hawaii 2 Outline · Design Flow ­ Hardware description languages (HDL), e.g., verilog and VHDL · Programmable Logic ­ PALs and PLAs ­ FPGAs #12;2 Galen Sasaki EE 361 University of Hawaii 3 Simplified Design

  1. Galen Sasaki EE 260 University of Hawaii 1 Electronic Design Automation

    E-Print Network [OSTI]

    Sasaki, Galen H.

    1 Galen Sasaki EE 260 University of Hawaii 1 Electronic Design Automation (EDA) EE 260 University of Hawaii Galen Sasaki EE 260 University of Hawaii 2 Outline · Design Flow ­ Hardware description languages University of Hawaii 3 Simplified Design Flow Design Problem Design Circuit Schematic A description (or

  2. Galen Sasaki EE 260 University of Hawaii 1 Electronic Design Automation

    E-Print Network [OSTI]

    Sasaki, Galen H.

    Galen Sasaki EE 260 University of Hawaii 1 Electronic Design Automation (EDA) EE 260 University of Hawaii #12;Galen Sasaki EE 260 University of Hawaii 2 Outline · Design Flow ­ Hardware description University of Hawaii 3 Simplified Design Flow Design Problem Design Circuit Schematic A description (or

  3. TechRealization Day Pacific Northwest National Laboratory

    E-Print Network [OSTI]

    ,300,000 sf 6,000 Jobs "A Master-Planned Technology Community" #12;History of the Park Founded in 1998. 4 TV Ch. 13 TV KBTK Radio KKOB Radio Funders City of Albuquerque DOE SNL EDA NM State Legislature Rancho AED Landowners APS DOE State of NM Marketing Agents Developers BUILD New Mexico Amelang Brent

  4. Plasma Vertical Control with Internal and External Coils in Next Step Tokamaks

    E-Print Network [OSTI]

    design that is suÆciently generic to provide more general guidance for future design e#11;orts. The design used is referred to as the Advanced Tokamak Burning Experiment (ATBX)[5], which was an interim e#11;ort to reduce the cost of the ITER EDA #12;nal design, by reducing the device size and taking

  5. MARTHA: Architecture for Control and Emulation of Power Electronics and Smart Grid Systems

    E-Print Network [OSTI]

    Devadas, Srinivas

    an efficient interface between variable speed wind turbines and the grid that enables maximum wind power consumption by more than 30% [2]. B. Electronic Design Automation (EDA) of Power Electronics The level of automation in the design, prototyping, verifi- cation and testing of power electronics systems is, in many

  6. Geophysical Prospecting 38,621-63 1,199O ALIGNMENT OF NEAR-SURFACE INCLUSIONS

    E-Print Network [OSTI]

    Edinburgh, University of

    GEOMETRIES FOR GEOTHERMAL HOT-DRY-ROCK EXPERIMENTS' STUART CRAMPIN AB S T R A C T CRAMPIN, S. 1990. Alignment of near-surface inclusions and appropriate crack geometries for geothermal hot-dry-rock experiments that the EDA-cracks and hydraulic fractures are typically aligned vertically, striking parallel, or subparallel

  7. Voltage-dependent behavior of a "ball-and-chain" gramicidin channel

    E-Print Network [OSTI]

    Woolley, G. Andrew; Zunic, Valentin; Karanicolas, John; Jaikaran, Anna S. I.; Starostin, Andrei V.

    1997-11-01

    -trans isomerization on the 10–100-ms time scale. The conductance behavior of gram-EDA is found to be markedly voltage dependent, whereas the behavior of gram-DMEDA is not. In addition, voltage affects the cis-trans ratios of the carbamate groups of gram...

  8. Catalog no. 3096, March 2006, c. 1352 pp. in 2 volumes ISBN: 0-8493-3096-3, $149.95 / 85.00

    E-Print Network [OSTI]

    Bhattacharyya, Shuvra S.

    's included in the Handbook? EDA for IC System Design, Verification, and Testing This first installment examines logical design, focusing on system-level and micro-architectural design, verification, and testing and modeling languages, high-level synthesis approaches, power estimation methods, simulation techniques

  9. XIII JORNADAS DE PARALELISMO--LLEIDA, SEPTIEMBRE 2002 1 Resumen --Se realiza una breve introduccin a los

    E-Print Network [OSTI]

    Miguel-Alonso, José

    introducción a los algoritmos de estimación de distribuciones, dentro del ámbito de la computación evolutiva. Al aplicar estos algoritmos a un problema de concordancia inexacta de grafos, se observan largos observado de 4,53. Palabras clave -- Algoritmos de estimación de distribuciones (EDAs), computación

  10. A Prototype Data Archive for the PIER "Thermal Distribution Systems in Commercial Buildings" Project

    E-Print Network [OSTI]

    archive for a selection of building energy data on thermal distribution systems in commercial buildings California Energy Data Archive (CalEDA) that provides public web access to data from PIER and related projects. Characteristics of a Building Energy Data Archive Several groups have developed data archives

  11. High-Speed Real-Time Digital Emulation for Hardware-in-the-Loop Testing of Power Electronics: A New Paradigm in the Field of

    E-Print Network [OSTI]

    Sanders, Seth

    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 Michel A. Kinsy-time emulation for Hardware-in-the-Loop (HiL) testing and design of high-power power electronics systems. Our

  12. Multivariate Multi-Model Approach for Globally Multimodal Problems

    E-Print Network [OSTI]

    Chu, Hao-hua

    Multivariate Multi-Model Approach for Globally Multimodal Problems Chung-Yao Chuang Institute this source of difficulty, we designed an EDA that builds and samples multiple probabilistic models at each adopt multivariate probabilis- tic models. Furthermore, we have also devised a mechanism

  13. DCC Project proposal Jon Axelsson Design of embedded systems, advanced course Jakob Hgg

    E-Print Network [OSTI]

    to use switching power electronics to keep the losses small. The fact that the load is inductive makesDCC ­ Project proposal Jon Axelsson Design of embedded systems, advanced course Jakob Hägg EDA385 Per Söderberg In several power electronic applications it is elementary to control a current through

  14. STEVEN MARK NOWICK Department of Computer Science

    E-Print Network [OSTI]

    in Europe (DATE) Conference EDA Consortium; Grenoble, France 2013. 2 #12;Best Paper Finalist (2 papers) 14th-tolerance and reliability, and ultra-low energy digital systems. PERSONAL INFORMATION Date of birth: March 28, 1954, Tools and Test) National Science Foundation, Arlington, VA, 1993. Best Paper Award Logic and Circuit

  15. Geophys. J. Int. (1991) 107, 433-447 Paris Basin VSPs: case history establishing combinations of fine-layer

    E-Print Network [OSTI]

    Edinburgh, University of

    1991-01-01

    Geophys. J. Int. (1991) 107, 433-447 Paris Basin VSPs: case history establishing combinations This paper examines shear-wave splitting in multi-offset VSPs at a borehole site in the Paris Basin basins. Key words: crack (EDA) and fine-layer (PTL) anisotropy, sedimentary basins, shear

  16. Estimacin de Consumo de Potencia en FPGA a travs de un Servicio Web

    E-Print Network [OSTI]

    Boemo, Eduardo

    herramienta EDA (Electronic Design Automation) esté disponible para los usuarios en Internet, se desarrolló artículo se describe un servicio Web sencillo para una herramienta de estimación de consumo en circuitos. Una de las ventajas de esta tecnología es que los usuarios remotos pueden acceder a la herramienta en

  17. Observed 1970-2005 cooling of summer daytime temperatures in coastal California

    E-Print Network [OSTI]

    Lebassi, B.

    2009-01-01

    sources and their use in heat island research. LBNL Tech.for California urban heat islands. Bulletin Amer. Meteor.Observations of the urban heat island effect in New York

  18. Radiative forcing and temperature response to changes in urban albedos and associated CO2 offsets

    E-Print Network [OSTI]

    Menon, Surabi

    2010-01-01

    basis of the urban heat island, Quart. J. Roy. Meteor.of cool materials as a heat island mitigation strategy, J.Similar to the urban heat island effect, where urban areas

  19. Barack Obama and the African Idea: Topology, Tropology, and Stasis in Spatial Counter Narratives

    E-Print Network [OSTI]

    Chirindo, Kundai V

    2012-12-31

    There is no region of world outside of the United States where Obama's meteoric rise generated as much excitement as in Africa. It is also uncontroversial to assert that Obama's rhetorical skill was a major factor behind his success. Yet...

  20. Volume 2,no. 2 Spring 2015

    E-Print Network [OSTI]

    Malsbury, Havilliah

    2015-01-01

    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

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

    E-Print Network [OSTI]

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

    1991-03-01

    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...

  2. 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

    2001-01-01

    flowed from recharge areas to the north in central Alabama and discharged along the western erosional escarpment of the Lower Cretaceous platform. This meteoric groundwater may have mixed either with seawater that infiltrated the platform from...

  3. 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

  4. 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.

    2005-01-01

    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 ...

  5. Analysis of International Policies In The Solar Electricity Sector: Lessons for India

    E-Print Network [OSTI]

    Deshmukh, Ranjit

    2011-01-01

    recently. The total installed solar capacity by the end ofits meteoric rise in installed solar PV capacity spurred byhas the third largest installed solar PV capacity of 3.6 GW.

  6. Relationships among oils and water compositions in Niger delta

    SciTech Connect (OSTI)

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

    1987-10-01

    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.

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

    E-Print Network [OSTI]

    Christensen, Lane

    2006-10-26

    In ten sit y ( 10 0% ) Polymer Reaction Mn (kDa) Mw (kDa) Mw/Mn Titration % Protonated Degree of Time (#1;mol HCl) Nitrogens Branching poly(EDA/CBA) 48 h 1.6 2.0 1.26 8.2 21.9 0.37 poly(DETA/CBA) 18 h 3.3 4.8 1.47 5.0 10.1 0.72 poly(TETA/CBA) 16 h 2.3 3... 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...

  8. Auslegung: a journal of philosophy, Volume 7, Number 1 (November, 1979): Books Received

    E-Print Network [OSTI]

    , Massachusetts: The MIT Prss, I.97R. 100 Ki Igore, Will jam J. Ait Introductory Logic. 2d ed. Nov; York: Molt, Rinehart and Winston, 1979. Leslie, John. VaUie aiid Existence. Totowa, New Jersey: Uowman and TTttTeFleld, 19 79. Mareuse, Herbert. The Aesthetic...? A £i!iti9lJ9 9 J! !'91?E*T-L[.:> Philosophy of History. Ithaca, New York: Cornell University Press, 1970. ...

  9. Faculty Highlights 2015 / 2016

    E-Print Network [OSTI]

    Yao, Shao Q

    Lee Hian Kee Professor Jagadese J. Vittal Professor Xu Guo Qin Professor Wong Ming Wah, Richard Yau, Sam p14 Loh Kian Ping p15 Lu Yixin p16 Jagadese J. Vittal p17 Wong Ming Wah, Richard p18 Xu Guo Goki Eda p50 Ge Shaozhong p51 Lu Jiong p52 Christian Albertus Nijhuis p53 Tan Zhi Kuang p54 Wu Jie p55

  10. 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)

    2014-07-01

    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.

  11. Atomistic Simulations of Bonding, Thermodynamics, and Surface Passivation in Nanoscale Solid Propellant Materials 

    E-Print Network [OSTI]

    Williams, Kristen

    2012-10-19

    decomposition analysis CMDB composite-modified double-base propellant CO carbon monoxide CO2 carbon dioxide Cp cyclopentadienyl, C5H5 Cp? pentamethyl-cyclopentadienyl, C5[CH3]5 DDT Deflagration-to-detonation transition EA Electron affinity EDA Energy...- istry WebBook.14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.1 Elemental assignments for the combined basis sets, BS-I and BS-II. GTH bases are those provided with the cp2k distribution. . . . . . . . . . . . . 36 5.1 Vertical...

  12. Hydrology of the Greater Tongonan geothermal system, Philippines, as deduced from geochemical and isotopic data

    SciTech Connect (OSTI)

    Alvis-Isidro, R.R.; Solana, R.R.; D`amore, F.; Nuti, S.; Gonfiantini, R.

    1993-10-01

    Fluids in the Greater Tongonan geothermal system exhibit a large positive {sup 18}O shift from the Leyte meteoric water line. However, there is also a significant shift in {sup 2}H. The {delta}{sup 2}H-{delta}{sup 18}O plot shows that the geothermal fluids may be derived by the mixing of meteoric water with local magmatic water. The most enriched water in the Greater Tongonan system, in terms of {delta}{sup 18}O, {delta}{sup 2}H and Cl, is comprised of approximately 40% magmatic water. Baseline isotope results support a hydrogeochemical model in which there is increasing meteoric water dilution to the southeast, from Mahiao to Sambaloran and towards Malitbog. The Cl-{delta}{sup 18}O plot confirms that the geothermal fluid in Mahanagdong, further southeast, is distinct from that of the Mahiao-Sambaloran-Malitbog system.

  13. Proceedings of the IMC, Porec, 2009 7 Recent shower calculations

    E-Print Network [OSTI]

    providing good matches to forecasts made by various meteor astronomers. It can also be shown, from orbit that produce partic- ular outbursts, especially when the trails are reasonably young. Over time, the meteoroids, in situations where dust trail theories can be used, they are in good agreement (Vaubaillon et al. 2003, 2004

  14. 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

  15. www.elsevier.eom/locate/asr Adv. Space Res. Vol. 27, Nos 6-7, pp. 1181-1187, 2001

    E-Print Network [OSTI]

    Mendillo, Michael

    transfer. (2) Ion sputtering: direct impact of surface Na by charged solar wind particles such as protons by obtaining excess energy through a chemical reaction with the solar wind particles on the surface as opposed to direct ion impact. (4) Thermal desorption: evaporation of material from the surface. (5) Meteoric impact

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

    E-Print Network [OSTI]

    Mendillo, Michael

    , solar wind sputtering and meteoroid impact. Neutral sodium atoms escaping lunar gravity experience solar 2009 Available online xxxx Keywords: Moon Meteors Solar wind Solar radiation Image processing a b s t r wind proton energy flux and solar near ultra violet (NUV) patterns for possible correlations. Results

  17. The Poplar Springs Radiometeor Station http://www.amsmeteors.org/radio/poplar.html[2/22/2014 5:27:46 PM

    E-Print Network [OSTI]

    Richardson Jr., James E.

    ), the free electrons in this ionized trail are capable of reflecting radio waves from transmitters below rapidly diffuses into the surrounding air, it quickly looses its ability to reflect radio waves, causing capable of reflecting radio waves for up to several minutes. Meteor radio wave reflections are also called

  18. The Perseids 1995 in Poland ARKADIUSZ OLECH and PRZEMYSLAW WO

    E-Print Network [OSTI]

    Olech, Arkadiusz Kamil

    The Perseids 1995 in Poland ARKADIUSZ OLECH and PRZEMYSLAW WO #19; ZNIAK Warsaw University Observatory, Al. Ujazdowskie 4, Warszawa, 00-478 Poland (Received 29 December 1995) Abstract Visual observations of 1995 Perseid meteor stream made by Polish astronomy amateurs are reported. Using this material

  19. L. Evers, Infrasound monitoring in the Netherlands 1 Infrasound Monitoring in the Netherlands

    E-Print Network [OSTI]

    Evers, Läslo G.

    of infrasound are: explosions, severe weather, meteors, sonic booms, sea waves, volcanoes, nuclear tests is applied to verify the Comprehensive Nuclear-Test- Ban Treaty (CTBT). Worldwide 60 arrays are currently constructed to monitor the atmosphere for clandestine nuclear tests. Infrasound can travel over large

  20. Discriminating secondary from magmatic water in rhyolitic matrix-glass of volcanic pyroclasts

    E-Print Network [OSTI]

    Gonnermann, Helge

    October 2014 Abstract Pyroclasts from explosive eruptions, such as the 1060 CE explosive Glass Mountain that Glass Mountain pumices contain 0.2­0.5 wt% primary water, but gained 1­2 wt% of meteoric water of bubbles of a supercritical water-bearing fluid phase (e.g., Hurwitz and Navon, 1994; Thomas et al., 1994

  1. Orbital Evolution of Pribram and Neuschwanstein Leonard Kornos Juraj Toth Peter Veres

    E-Print Network [OSTI]

    Veres, Peter

    Orbital Evolution of Pri´bram and Neuschwanstein Leonard Kornos Æ Juraj To´th Æ Peter Veres+Business Media B.V. 2007 Abstract The orbital evolution of the two meteorites Pri´bram and Neuschwanstein. There were five meteors found in the IAU MDC database and six NEAs with currently similar orbits to Pri

  2. A MULTIPLE FOIL LUNAR ENVIRONMENTAL ANALYSER (FLEA PACKAGE) FOR THE EVALUATION OF

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Products. · Solar Wind Composition. · Medium Energy Solar Flare Composition. · Solar Wind Sputter Rate The conception of a multiple thin foil sensor has been investigated and is suggested a.s a very valuable tool of specific param- eters of the meteor environment, of the solar wind spectrum and of the overall

  3. GEOFLUIDS _

    E-Print Network [OSTI]

    process that may be triggered by cold meteoric water but also by warm ... because they host malor oil and gas reserves as well as mln- caMg(C03)2(s) + (l _ X) Ca2+ + 2X H+ H ... Additionally, ?eld observations suggest that calcium ions.

  4. PII S0016-7037(01)00579-8 The origin and evolution of base metal mineralising brines and hydrothermal fluids,

    E-Print Network [OSTI]

    Banks, David

    that the major element chemistry of these fluids is comparable with that of evolved oil-field brines, and fluids of mineralising palaeoflu- ids is a complex function of the basin chemistry, subsequent modifications due to water by the evaporation of seawater or a seawater­meteoric water mixture past the point of halite precipitation. The major

  5. 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

  6. Impact of lake-level changes on the formation of thermogene travertine in continental rifts: Evidence from Lake Bogoria,

    E-Print Network [OSTI]

    Konhauser, Kurt

    pressure lowers the level of boiling in the plumbing system of the hot springs. Any carbonate precipitation then occurs below the land surface. During humid phases, the dilute meteoric recharge increases, enhancing geothermal circulation, but the rising lake waters, which become relatively dilute, flood most spring vents

  7. Six Hot Topics in Planetary Astronomy

    E-Print Network [OSTI]

    David Jewitt

    2008-11-14

    Six hot topics in modern planetary astronomy are described: 1) lightcurves and densities of small bodies 2) colors of Kuiper belt objects and the distribution of the ultrared matter 3) spectroscopy and the crystallinity of ice in the outer Solar system 4) irregular satellites of the giant planets 5) the Main Belt Comets and 6) comets and meteor stream parents.

  8. *Neoaiptasia morbilla* new species (Cnidaria: Actiniaria), a sea anemone symbiont of sand-dwelling gastropods on Saipan, Mariana Islands, with comments on some other such associations

    E-Print Network [OSTI]

    Fautin, Daphne G.; Goodwill, Roger H.

    2009-01-01

    identified as Cricophorus radiatus. In the photo, it is attached near the aperture of a high-spired snail shell termed in the (Japanese language) text as momiji bora. Uchida & Soyama (201) noted it was the species of anemone described by Stimpson (185... in the field finding, colecting, and helping to identify specimens for no compensation other than the excitement of being in an exotic locale. We thank Dr. Sanae Eda for translation of Uchida & Soyama; Dr. Stanley Lombardo for help with Latin; Dr. Tan Swee...

  9. PRI Annual Report 2003

    E-Print Network [OSTI]

    Maynard-Moody, Steven

    2004-10-29

    by other university area studies programs. The Center received renewed funding from the National Science Foundation and the Swiss Peace Foundation in 2003. People: PHILIP SCHRODT, Co-Director of CIPA and Professor of Political Science DEBORAH J. ?MISTY... and strategic planning and prepares reports related to the Center. She was CO-PI on the year-15 renewal grant from the Department of Commerce, EDA, to fund KCCED. HURD also conducted four economic trend projects and two grant-funded surveys. She has been a...

  10. Selective Capture of Cesium and Thallium from Natural Waters and Simulated Wastes with Copper Ferrocyanide Functionalized Mesoporous Silica

    SciTech Connect (OSTI)

    Sangvanich, Thanapon; Sukwarotwat, Vichaya; Wiacek, Robert J.; Grudzien, Rafal M.; Fryxell, Glen E.; Addleman, Raymond S.; Timchalk, Charles; Yantasee, Wassana

    2010-10-15

    Copper(II) ferrocyanide immobilized inside mesoporous silica MCM-41 supports (Cu-FC-EDA-SAMMSTM) has been evaluated against iron(III) hexacyanoferrate(II) (insoluble Prussian blue) for the sorption of cesium (Cs+) and thallium (Tl+) from natural waters and simulated wastes. The affinities (in term of distribution coefficients, Kd) of both sorbents for Cs and Tl were measured as a function of solution pH, competing cations, and matrices. For the entire pH studied (pH 0.1 to 7.3), Cu-FC-EDA-SAMMS had higher affinities for Cs and Tl (one to two orders of magnitude higher Kd) than Prussian blue and was less negatively impacted by the solution pH, competing cations, and matrices. The adsorption isotherms and kinetics of the two sorbents for Cs and/or Tl were also determined in seawater and simulated acid and alkaline wastes. SAMMS outperformed Prussian blue in terms of maximum adsorption capacity (e.g., 21.7 versus 2.6 mg Cs/g in acid waste stimulant, pH 1.1), and rate (e.g., over 95 wt% of Cs was removed after 2 minutes with SAMMS, while only 75 wt% was removed with Prussian blue). The lower affinity, capacity, and rate of Cs and Tl sorption on Prussian blue than those on Cu-FC-EDA-SAMMS were attributed to the molecular pore sizes, which restrict mass transport, and the insoluble Cs abducts of the Prussian blue, which restrict the ability of neighboring binding sites to further bind Cs ions. On the other hand, the large pores of SAMMS not only enable faster diffusion and faster binding chemistry, but they also allow isolation of binding sites so that one Cs binding event does not impact further Cs binding. In addition, iron (Fe) dissolved from insoluble Prussian blue over 10-fold of that from Cu-FC-EDA-SAMMS after 24 hours of contact time, indicating poorer material stability of Prussian blue.

  11. Effect of methionine, methionine hydroxy analogue, vitamin B?? and folic acid on blood and liver glutathione content in chicks 

    E-Print Network [OSTI]

    Gabay, Sabit

    1954-01-01

    ~ ~ Table I . Table II. Able III ~ ~ ~ . ~ ~ ~ Table IV. Viable V . Literature Cited . . CHaPTER 4 - The Effeot of a bathetic ~ Xrlet duyylenented uith DL-ArChionine~ Methionine ~ Analogue and/or Vitaed. n Qq on B1ood and Liver Clutath- ione Content...) 181. 13( ) (s+ ) -" SeSrees of ~eda, (2) & S ? ~ ~~: ~~~ for h, ionsllty. (+) ~ficsnt on the 0. 05 level of probability (l. s. 4. 5. 9) (es) SiSnificsnt on the 0. 01 level of probability (l. s. 4. ~ 7. 9) TABLE V THE ~ GP DIETS SUPPLENEXZED...

  12. Mon. Not. R. Astron. Soc. 000, 000--000 (0000) Printed 7 October 1996 (MN L a T E X style file v1.3) Orbital evolution of Comet 1995 O1 HaleBopp

    E-Print Network [OSTI]

    .3) Orbital evolution of Comet 1995 O1 Hale­Bopp M.E. Bailey 1 , V.V. Emel'yanenko 1;2 , G. Hahn 3 , N on that of C/1995O1 (Hale­Bopp) are presented. Initially, 33 orbits taken from various sources were integrated dynamically young. Key words: celestial mechanics, comets: individual ­ C/1995O1 Hale­Bopp, meteors. 1

  13. On the Forecasting of Orogenic Mesoscale Convective Complexes

    E-Print Network [OSTI]

    Tucker, Donna F.; Zentmire, Kristine S.

    1999-12-01

    ., 1980: Mesoscale convective complexes. Bull. Amer. Meteor. Soc., 61, 1374–1387. , 1983: Large-scale meteorological conditions associated with midlatitude mesoscale convective complexes. Mon. Wea. Rev., 111, 1475–1493. , D. M. Rodgers, and K. W. Howard..., 1982: Mesoscale convective complexes over the United States during 1981—Annual sum- mary. Mon. Wea. Rev., 110, 1501–1514. , K. W. Howard, D. L. Bartels, and D. M. Rodgers, 1986: Me- soscale convective complexes in the middle latitudes. Mesoscale...

  14. Bergen South: The Americanization of the Meteorology Profession in Latin America during World War II

    E-Print Network [OSTI]

    Cushman, Gregory T.

    2005-01-01

    Bjerknes to settle down at UCLA. He delayed signing a contract, however, until he and Rossby had negotiated the hire of yet another Bergen-trained meteor­ ologist, Jorgen Holmboe, from MIT.5 Los Angeles's status as center of the world airplane industry... Oscillation; to this end, they carefully collected daily reports transmitted by shortwave from Manila, Hanoi, and Batavia (now Jakarta). Ecuadorian scientists were similarly en­ gaged in projects to relate solar radiation, abnormal precipitation patterns...

  15. . -A Scicnco Service Fnaturc Released upon receipt

    E-Print Network [OSTI]

    surrounded by a seriee of lightning-rods, has beon the Scene of two reaarkable cases of ball lishtning, both TXE:WTHER 7 Mailed Virch 31, 1930 By Charles Fitzhugh Talmn, AT:thority on Meteor01o&y. A CAS2 OF BALL LIGHTNING The inn standing at the sumit of the Faulharn (altitude 8,800 feet), in the Swiss Alps, though

  16. 1

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-InspiredAtmosphericdevices capturecomputeranalyzes meteor fragments

  17. 1

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-InspiredAtmosphericdevices capturecomputeranalyzes meteor

  18. The effect of temperature on the development, growth and survival of Psorophora columbiae (Dyar and Knab) (Diptera: Culicidae) 

    E-Print Network [OSTI]

    McHugh, Chad Patrick

    1982-01-01

    at other temperatures due to the short time in- terval over which che pupal molt took place. QI W QI U C V QI 0 L CO Ul QI IQ IJ I 0 Q! 0 N C E QI I C 0 '0 C Ql IQ 0 '0 0 Ql Ql 0 QI E QI IJ IJ IQ U N '0 C Ql QI 00 ) Ql M IJ... Vl IJ M Ql CM O. M Ql Ql IJ IQ M IJ Ql Ql CQO E 0 Ql Ql QQ W ) '0 IJ U C Ql IQ tl Ql E QI U Ql E Ql W UI IQ Ql QI U Ql 0 M JQ QJ E I IQ Ql 00 I 0 QQ Ql 0 N IU IJ IQ QJ 'Ql 22 2 0 lh o 0 0 0 Z 5%1SNI Nl +o BAILYl...

  19. The effect of some dissolved constituents on the redox potential of water 

    E-Print Network [OSTI]

    Wales, Robert David

    1952-01-01

    yeaobLoel ~ease aassbe a eateassgo aleaiwNSa Le eel Laebsse af iba bphNaa Oleeie4e ~ ?ateeacee aleAnde La ibs oe4eeaM ~ balf~ seeL Li La eyebea io gLee ihe Eb NLaee ibe ylabLeea alaaiwde ie Lssaeis LL Le aei aNeAsC Q ~%coos bai ibe ~ ball4sell Le aft... ~ darLag ahLeh ih& Impasse aae 4&g&ee&4s faQeeN by a yes%&4 ~ abXoh ~ ?&co t&bsa &ad oa&lysa&L, The 4IIgaeeL&g oyos?tie& see gee tbe yasp?eo &f et&rhbIg ib& naa aLth & lsas dLeaale&4 osSyg&a edae The ibse~eba4 f lech &s&L lb& re+ ~ ssoe? fLU?4 sslth...

  20. A photonics design tool for advanced CMOS nodes

    E-Print Network [OSTI]

    Alloatti, Luca; Stojanovic, Vladimir; Popovic, Milos; Ram, Rajeev Jagga

    2015-01-01

    Recently, we have demonstrated large-scale integrated systems with several million transistors and hundreds of photonic elements. Yielding such large-scale integrated systems requires a design-for-manufacture rigor that is embodied in the 10000 to 50000 design rules that these designs must comply within advanced CMOS manufacturing. Here, we present a photonic design automation (PDA) tool which allows automatic generation of layouts without design-rule violations. Our tool is written in SKILL, the native language of the mainstream electric design automation (EDA) software, Cadence. This allows seamless integration of photonic and electronic design in a single environment. The tool leverages intuitive photonic layer definitions, allowing the designer to focus on the physical properties rather than on technology-dependent details. Removal of design-rule violations - based on Manhattan discretization, Boolean and sizing operations - occurs during data preparation from the initial photonic layers to the final mask...

  1. Design and Analysis of a Spurious Switching Suppression Technique Equipped Low Power Multiplier with Hybrid Encoding Scheme

    E-Print Network [OSTI]

    Saravanan, S

    2010-01-01

    Multiplication is an arithmetic operation that is mostly used in Digital Signal Processing (DSP) and communication applications. Efficient implementation of the multipliers is required in many applications. The design and analysis of Spurious Switching Suppression Technique (SSST) equipped low power multiplier with hybrid encoding is presented in this paper. The proposed encoding technique reduces the number of switching activity and dynamic power consumption by analyzing the bit patterns in the input data. In this proposed encoding scheme, the operation is executed depends upon the number of 1s and its position in the multiplier data. The architecture of the proposed multiplier is designed using a low power full adder which consumes less power than the other adder architectures. The switching activity of the proposed multiplier has been reduced by 86 percent and 46percent compared with conventional and Booth multiplier respectively. It is observed from the device level simulation using TANNER 12.6 EDA that t...

  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

    1995-09-01

    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. Sedimentology and diagenesis of windward-facing fore-reef calcarenites, Late Pleistocene of Barbados, West Indies

    SciTech Connect (OSTI)

    Humphrey, J.D.; Kimbell, T.N.

    1989-03-01

    Late Pleistocene reef terraces in southeastern Barbardos developed extensive fore-reef sand facies during deposition in response to high-energy windward-facing conditions. Sedimentology and diagenesis of these deposits illustrate significant contrasts with previous studies from the leeward west coast. These calcarenites are dominantly skeletal packstones with less common grainstones and wackestones present. The fore-reef sand facies occurs within progradational reef sequences, being conformably overlain by deep-water head coral facies. Medium-bedded, laterally continuous sand sheets retain original depositional slopes, dipping seaward at 10/degrees/-15/degrees/. These fore-reef deposits, in places, are over 30 m thick (average 20 m) and developed rapidly during late Pleistocene glacio-eustatic sea level highstands. Sedimentation rate ranges from 2 to 5 m/1000 years. Areal extent of fore-reef calcarenites in southeastern Barbados is estimated to be 8-10 km/sup 2/. Lithologically, the packstones are composed of an abundance of coralline red algae and the benthic foraminifer Amphistegina sp. Other volumetrically significant allochems include echinoids, mollusks, rhodoliths, peloids, and micritized grains. Micrite in the wackestone and packstone lithologies is likely derived from intense physical/mechanical abrasion of shoal-water reef facies. Diagenesis of these lithologies reflects a complex interplay of meteoric, mixing zone, and marine environments as a result of glacio-eustasy. Differences in diagenetic character are derived from differences in terrace ages, terrace geometry, a paleotopographic control on meteoric ground-water distribution, and high-energy coastal conditions. Diagenetic fabrics include equant, blocky meteoric phreatic calcite; limpid dolomite of mixing zone origin: and peloidal and isopachous fibrous cements from marine precipitation.

  4. FORMATION OF CALCIUM AND SILICA FROM PERCOLATION IN A HYDROLOGICALLY UNSATURATED SETTING, Y.M.,NV

    SciTech Connect (OSTI)

    J.B. Paces; J.F. Whelan; Z.E. Peterman; B.D. Marshall

    2000-07-27

    Geological, mineralogical, chemical, and isotopic evidence from coatings of calcite and silica on open fractures and lithophysal cavities within welded tuffs at Yucca Mountain indicate an origin from meteoric water percolating through a thick (500 to 700 m) unsaturated zone (UZ) rather than from pulses of ascending ground water. Geologic evidence for a UZ setting includes the presence of coatings in only a small percentage of cavities, the restriction of coatings to fracture footwalls and cavity floors, and an absence of mineral high-water marks indicative of water ponding. Systematic mineral sequences (early calcite, followed by chalcedony with minor quartz and fluorite, and finally calcite with intercalated opal forming the bulk of the coatings) indicate progressive changes in UZ conditions through time, rather than repeated saturation by flooding. Percolation under the influence of gravity also results in mineral textures that vary between steeply dipping sites (thinner coatings of blocky calcite) and shallowly dipping sites (thicker coatings of coarse, commonly bladed calcite, with globules and sheets of opal). Micrometer-scale growth banding in both calcite and opal reflects slow average growth rates (scale of mm/m.y.) over millions of years rather than only a few rapidly deposited growth episodes. Isotopic compositions of C, O, Sr, and U from calcite and opal indicate a percolation-modified meteoric water source, and collectively refute a deeper ground-water source. Chemical and isotopic variations in coatings also indicate long-term evolution of water compositions. Although some compositional changes are related to shifts in climate, growth rates in the deeper UZ are buffered from large changes in meteoric input. Coatings most likely formed from films of water flowing down connected fracture pathways. Mineral precipitation is consistent with water vapor and carbon dioxide loss from films at very slow rates. Data collectively indicate that mineral coatings formed in a UZ setting that has been hydrologically stable over million-year time scales.

  5. Automating Risk Assessments of Hazardous Material Shipments for Transportation Routes and Mode Selection

    SciTech Connect (OSTI)

    Barbara H. Dolphin; William D. RIchins; Stephen R. Novascone

    2010-10-01

    The METEOR project at Idaho National Laboratory (INL) successfully addresses the difficult problem in risk assessment analyses of combining the results from bounding deterministic simulation results with probabilistic (Monte Carlo) risk assessment techniques. This paper describes a software suite designed to perform sensitivity and cost/benefit analyses on selected transportation routes and vehicles to minimize risk associated with the shipment of hazardous materials. METEOR uses Monte Carlo techniques to estimate the probability of an accidental release of a hazardous substance along a proposed transportation route. A METEOR user selects the mode of transportation, origin and destination points, and charts the route using interactive graphics. Inputs to METEOR (many selections built in) include crash rates for the specific aircraft, soil/rock type and population densities over the proposed route, and bounding limits for potential accident types (velocity, temperature, etc.). New vehicle, materials, and location data are added when available. If the risk estimates are unacceptable, the risks associated with alternate transportation modes or routes can be quickly evaluated and compared. Systematic optimizing methods will provide the user with the route and vehicle selection identified with the lowest risk of hazardous material release. The effects of a selected range of potential accidents such as vehicle impact, fire, fuel explosions, excessive containment pressure, flooding, etc. are evaluated primarily using hydrocodes capable of accurately simulating the material response of critical containment components. Bounding conditions that represent credible accidents (i.e; for an impact event, velocity, orientations, and soil conditions) are used as input parameters to the hydrocode models yielding correlation functions relating accident parameters to component damage. The Monte Carlo algorithms use random number generators to make selections at the various decision points such as; crash, location, etc. For each pass through the routines, when a crash is randomly selected, crash parameters are then used to determine if failure has occurred using either external look up tables, correlations functions from deterministic calculations, or built in data libraries. The effectiveness of the software was recently demonstrated in safety analyses of the transportation of radioisotope systems for the US Dept. of Energy. These methods are readily adaptable to estimating risks associated with a variety of hazardous shipments such as spent nuclear fuel, explosives, and chemicals.

  6. 1

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-InspiredAtmosphericdevices capturecomputeranalyzes meteor fragmentsProton

  7. 1

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-InspiredAtmosphericdevices capturecomputeranalyzes meteor fragmentsProtonFlynn

  8. 9 M.y. record of southern Nevada climate from Yucca Mountain secondary minerals

    SciTech Connect (OSTI)

    Whelan, J.F.; Moscati, R.J.

    1998-12-01

    Yucca Mountain, Nevada, is presently the object of intense study as a potential permanent repository for the Nation`s high-level radioactive wastes. The mountain consists of a thick sequence of volcanic tuffs within which the depth to water table ranges from 500 to 700 meters below the land surface. This thick unsaturated zone (UZ), which would host the projected repository, coupled with the present day arid to semi-arid climate, is considered a favorable attribute of the site. Evaluation of the site includes defining the relation between climate variability, as the input function or driver of site- and regional-scale ground-water flow, and the possible future transport and release of radionuclides to the accessible environment. Secondary calcite and opal have been deposited in the UZ by meteoric waters that infiltrated through overlying soils and percolated through the tuffs. The oxygen isotopic composition ({delta}{sup 18}O values) of these minerals reflect contemporaneous meteoric waters and the {delta}{sup 13}C values reflect soil organic matter, and hence the resident plant community, at the time of infiltration. Recent U/Pb age determinations of opal in these occurrences, coupled with the {delta}{sup 13}C values of associated calcite, allow broadbrush reconstructions of climate patterns during the past 9 M.y.

  9. UNSATURATED ZONE CALCITE 813C EVIDENCE OF SOUTHERN NEVADA CLIMATES DURING THE PAST 9 MILLION YEARS

    SciTech Connect (OSTI)

    JOSEPH F. WHELAN AND RICHARD J. MOSCATI

    1998-01-26

    Yucca Mountain, Nevada, is presently the object of intense study as a potential permanent repository for the Nation's high-level radioactive wastes. The mountain consists of a thick sequence of volcanic tuffs in which the depth to the water table ranges from 500 to 700 meters below the land surface. This thick unsaturated zone (UZ), which would host the projected repository, coupled with the present-day arid to semi-arid environment, is considered a positive argument for the site. Evaluation of the site includes defining the relationship between climate variability, as the input function or driver of site- and regional-scale ground-water flow, and the possible transport and release of radionuclides. Secondary calcite and opal have been deposited in the UZ by meteoric waters that infiltrated through overlying soils and percolated through the tuffs. The oxygen isotopic composition ({delta}{sup 18}O values) of these minerals reflect contemporaneous meteoric waters and the {delta}{sup 13}C values reflect soil organic matter, and hence the resident plant community, at the time of infiltration (Whelan et al., 1994). Recent U/Pb age determinations of opal in these occurrences allows the {delta}{sup 13}C values of associated calcite to be used to reconstruct general climate variations during the past 9 M.y.

  10. EQ6 Calculations for Chemical Degradation of Navy Waste Packages

    SciTech Connect (OSTI)

    S. LeStrange

    1999-11-15

    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.

  11. Status of flow-battery research in the United States

    SciTech Connect (OSTI)

    Clark, R.P.; Chamberlin, J.L.; Saxton, H.J.; Symons, P.C.

    1982-01-01

    Flow batteries are defined as electrochemical energy storage devices in which at least one of the active materials is stored external to the power converting cell-stack, and in which this soluble active material is circulated via the electrolyte, through the cell-stack during system charge or discharge. Although intensive development of some of these systems has been underway for some time, they were only classified as a distinct category in the United States recently. Of the projects on flow batteries which are still being conducted, the work on the zinc/chlorine system (EDA) has been in progress since 1968; programs on zinc/bromine (Exxon, Gould), on iron/chromium Redox (NASA-Lewis Research Center), and on the iron/ferric-ferrous chloride system (NRG/GEL) have all been underway about seven years; research on the zinc/ferro-ferricyanide battery (Lockheed) has been conducted since 1978. The present paper, which reviews the 1982 status of these battery programs, appears timely since, except for the Lockheed system, the developments have all reached the stage where multi-kilowatt-hour batteries are under test.

  12. Theory of Deep Impurity Levels in Cucl 

    E-Print Network [OSTI]

    REN, SY; Allen, Roland E.; DOW, JD; LEFKOWITZ, I.

    1982-01-01

    possiby, a' 1 1 ttice relaxation. e p A, Cu site Egap Hf Sc CrY Fe Ag MnPt Re CuRuMp N!tLu Ni Cp~Ir Au0sfcgbV~i Zr ~%At!I]tv! " E Cu site I s I -I5 "IO35 30 -25 -20 IMPURITY PO I s I -5 0 ( -like) substitution-V of the A & s- i~ g edicted... (eV)IMP UR ITY POTENT ies o t e - 'c (d 2 2-like e-f the E-symme?c -like EdA defect levels in the gap when on t e ~20925 P IMPURITY LE S yN CuClTHEORY OF DEE I Hf Sc Cr Y Fa n NELu fbi Cour AuCsPcAbVYhfTi a &r I I"li l II tI "I/I t'I Egop 3...

  13. 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)

    2014-05-15

    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.

  14. Summary of the chemical characteristics of the HGP-A well; Puna, Hawaii

    SciTech Connect (OSTI)

    Thomas, D.M.

    1982-01-01

    The HGP-A geothermal well is located on the Lower East Rift Zone of Kilauea Volcano. It was completed in 1976 to a depth of 1966 meters and has a bottomhole temperature of 360/sup 0/C. Evaluation of the chemistry of the fluids produced indicate that recharge to the reservoir discovered by the HGP-A well is largely fresh meteoric water with smaller amounts of seawater recharge. The changes in fluid chemistry during production suggest that at least two separate aquifers are providing fluids to the well and that silica deposition is occurring in the reservoir formation. Isotopic data indicate that the fluid circulation and residence times in the reservoir are relatively short and that the heat source for this part of the rift zone is either very young or relatively large.

  15. Dialogs by Jerry Szymanski regarding the Yucca Mountain controversy from December, 1990 to March, 1991: Volume 3. Special report number 9, Contract number 92/94.0004

    SciTech Connect (OSTI)

    1993-07-01

    This report is a critical review of a US Geological Survey (USGS) paper regarding the origin of the Yucca Mountain calcite-opaline silica deposits. The report is in the form of a letter to the original authors in the USGS detailing the criticism regarding the origin of calcitic veins in the Yucca Mountain region. The USGS paper contributed most of these calcrete deposits to meteoric dissolution and precipitation mechanisms while the author presents his case for hydrothermal and magmatic origins. The paper presents strong isotopic characterization of these deposits to demonstrate a volcanic influence or source of this mineralization. Strontium, uranium, and carbon isotopes are graphed and compared from the numerous geologic and ground water samples available.

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

    E-Print Network [OSTI]

    Lior Shamir; Robert J. Nemiroff

    2006-07-03

    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.

  17. Cometary panspermia explains the red rain of Kerala

    E-Print Network [OSTI]

    Godfrey Louis; A. Santhosh Kumar

    2003-10-05

    Red coloured rain occurred in many places of Kerala in India during July to September 2001 due to the mixing of huge quantity of microscopic red cells in the rainwater. Considering its correlation with a meteor airbust event, this phenomenon raised an extraordinary question whether the cells are extraterrestrial. Here we show how the observed features of the red rain phenomenon can be explained by considering the fragmentation and atmospheric disintegration of a fragile cometary body that presumably contains a dense collection of red cells. Slow settling of cells in the stratosphere explains the continuation of the phenomenon for two months. The red cells under study appear to be the resting spores of an extremophilic microorganism. Possible presence of these cells in the interstellar clouds is speculated from its similarity in UV absorption with the 217.5 nm UV extinction feature of interstellar clouds.

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

    SciTech Connect (OSTI)

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

    1982-08-01

    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.

  19. Timescale of asteroid resurfacing by regolith convection resulting from the impact-induced global seismic shaking

    E-Print Network [OSTI]

    Yamada, Tomoya M; Morota, Tomokatsu; Katsuragi, Hiroaki

    2015-01-01

    A model for the asteroid resurfacing by regolith convection is built to estimate its timescale. In the model, regolith convection is driven by the impact-induced global seismic shaking. The model consists of three steps: (i) intermittent impact of meteors, (ii) impact-induced global vibration (seismic shaking), and (iii) vibration-induced regolith convection. In order to assess the feasibility of the resurfacing process driven by the regolith convection, we estimate the resurfacing timescale as a function of the size of a target asteroid. According to the estimated result, the regolith-convection-based resurfacing timescale is sufficiently shorter than the mean collisional lifetime for the main belt asteroids. This means that the regolith convection is a possible mechanism for the asteroid resurfacing process. However, the timescale depends on various uncertain parameters such as seismic efficiency and convective roll size. To clarify the parameter dependences, we develop an approximated scaling form for the ...

  20. Instabilities during liquid migration into superheated hydrothermal systems

    SciTech Connect (OSTI)

    Fitzgerald, Shaun D.; Woods, Andrew W.

    1995-01-26

    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.

  1. Uranium mineralization in fluorine-enriched volcanic rocks

    SciTech Connect (OSTI)

    Burt, D.M.; Sheridan, M.F.; Bikun, J.; Christiansen, E.; Correa, B.; Murphy, B.; Self, S.

    1980-09-01

    Several uranium and other lithophile element deposits are located within or adjacent to small middle to late Cenozoic, fluorine-rich rhyolitic dome complexes. Examples studied include Spor Mountain, Utah (Be-U-F), the Honeycomb Hills, Utah (Be-U), the Wah Wah Mountains, Utah (U-F), and the Black Range-Sierra Cuchillo, New Mexico (Sn-Be-W-F). The formation of these and similar deposits begins with the emplacement of a rhyolitic magma, enriched in lithophile metals and complexing fluorine, that rises to a shallow crustal level, where its roof zone may become further enriched in volatiles and the ore elements. During initial explosive volcanic activity, aprons of lithicrich tuffs are erupted around the vents. These early pyroclastic deposits commonly host the mineralization, due to their initial enrichment in the lithophile elements, their permeability, and the reactivity of their foreign lithic inclusions (particularly carbonate rocks). The pyroclastics are capped and preserved by thick topaz rhyolite domes and flows that can serve as a source of heat and of additional quantities of ore elements. Devitrification, vapor-phase crystallization, or fumarolic alteration may free the ore elements from the glassy matrix and place them in a form readily leached by percolating meteoric waters. Heat from the rhyolitic sheets drives such waters through the system, generally into and up the vents and out through the early tuffs. Secondary alteration zones (K-feldspar, sericite, silica, clays, fluorite, carbonate, and zeolites) and economic mineral concentrations may form in response to this low temperature (less than 200 C) circulation. After cooling, meteoric water continues to migrate through the system, modifying the distribution and concentration of the ore elements (especially uranium).

  2. Environmental Resources of Selected Areas of Hawaii: Groundwater in the Puna District of the Island of Hawaii (DRAFT)

    SciTech Connect (OSTI)

    Staub, W.P.

    1994-06-01

    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 U.S. Department of Energy (DOE) published a notice in the Federal Register on May 17,1994 (Fed Regis. 5925638), withdrawing its notice of intent (Fed. Regis. 575433) 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 (i.e., the affected environment) 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 (hereinafter referred to as Hawaii). Groundwater quality inside and outside the lower east rift zone (LERZ) of Kilauea is compared with that of meteoric water, seawater, and geothermal fluid. The degree of mixing between meteoric water, sea water, and geothermal water in and adjacent to the LERZ also is discussed. Finally, groundwater pathways and use in the Puna District are discussed. Most of the information contained herein is compiled from recent U.S. Geological Survey publications and open-file reports.

  3. 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.

    1995-03-01

    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.

  4. SURVEYING THE DYNAMIC RADIO SKY WITH THE LONG WAVELENGTH DEMONSTRATOR ARRAY

    SciTech Connect (OSTI)

    Lazio, T. Joseph W.; Clarke, Tracy E.; Lane, W. M.; Gross, C.; Kassim, N. E.; Hicks, B.; Polisensky, E.; Stewart, K.; Ray, P. S.; Wood, D.; York, J. A.; Kerkhoff, A.; Dalal, N. Paravastu; Cohen, A. S.; Erickson, W. C.

    2010-12-15

    This paper presents a search for radio transients at a frequency of 73.8 MHz (4 m wavelength) using the all-sky imaging capabilities of the Long Wavelength Demonstrator Array (LWDA). The LWDA was a 16-dipole phased array telescope, located on the site of the Very Large Array in New Mexico. The field of view of the individual dipoles was essentially the entire sky, and the number of dipoles was sufficiently small that a simple software correlator could be used to make all-sky images. From 2006 October to 2007 February, we conducted an all-sky transient search program, acquiring a total of 106 hr of data; the time sampling varied, being 5 minutes at the start of the program and improving to 2 minutes by the end of the program. We were able to detect solar flares, and in a special-purpose mode, radio reflections from ionized meteor trails during the 2006 Leonid meteor shower. We detected no transients originating outside of the solar system above a flux density limit of 500 Jy, equivalent to a limit of no more than about 10{sup -2} events yr{sup -1} deg{sup -2}, having a pulse energy density {approx}>1.5 x 10{sup -20} J m{sup -2} Hz{sup -1} at 73.8 MHz for pulse widths of about 300 s. This event rate is comparable to that determined from previous all-sky transient searches, but at a lower frequency than most previous all-sky searches. We believe that the LWDA illustrates how an all-sky imaging mode could be a useful operational model for low-frequency instruments such as the Low Frequency Array, the Long Wavelength Array station, the low-frequency component of the Square Kilometre Array, and potentially the Lunar Radio Array.

  5. Ordovician carbonate formation waters in the Illinois Basin: Chemical and isotopic evolution beneath a regional aquitard

    SciTech Connect (OSTI)

    Stueber, A.M. ); Walter, L.M. . Dept. of Geological Sciences)

    1992-01-01

    Formation waters from carbonate reservoirs in the upper Ordovician Galena Group of the Illinois Basin have been analyzed geochemically to study origin of salinity, chemical and isotopic evolution, and relation to paleohydrologic flow systems. These carbonate reservoirs underlie the Maquoketa Shale Group of Cincinnatian age, which forms a regional aquitard. Cl-Br relations and Na/Br-Cl/Br systematics indicate that initial brine salinity resulted from subaerial evaporation of seawater to a point not significantly beyond halite saturation. Subsequent dilution in the subsurface by meteoric waters is supported by delta D-delta O-18 covariance. Systematic relations between Sr-87/Sr-86 and 1/Sr suggest two distinct mixing events: introduction of a Sr-87 enriched fluid from a siliciclastic source, and a later event which only affected reservoir waters from the western shelf of the basin. The second mixing event is supported by covariance between Sr-87/Sr-86 and concentrations of cations and anions; covariance between Sr and O-D isotopes suggests that the event is related to meteoric water influx. Systematic geochemical relations in ordovician Galena Group formation waters have been preserved by the overlying Maquoketa shale aquitard. Comparison with results from previous studies indicates that waters from Silurian-Devonian carbonate strata evolved in a manner similar to yet distinct from that of the Ordovician carbonate waters, whereas waters from Mississippian-Pennsylvanian strata that overlie the New Albany Shale Group regional aquitard are marked by fundamentally different Cl-Br-Na and Sr isotope systematics. Evolution of these geochemical formation-water regimes apparently has been influenced significantly by paleohydrologic flow systems.

  6. O and H diffusion in uraninite: Implications for fluid-uraninite interactions, nuclear waste disposal, and nuclear forensics

    SciTech Connect (OSTI)

    Fayek, Mostafa [University of Manitoba, Canada; Anovitz, Lawrence {Larry} M [ORNL; Cole, David [Ohio State University; Bostick, Debra A [ORNL

    2011-01-01

    Diffusion coefficients for oxygen and hydrogen were determined from a series of natural uraninite H2O experiments between 50 and 700 C. Under hydrous conditions there are two diffusion mechanisms: (1) an initial extremely fast-path diffusion mechanism that overprinted the oxygen isotopic composition of the entire crystals regardless of temperature and (2) a slower volume-diffusive mechanism dominated by defect clusters that displace or eject nearest neighbor oxygen atoms to form two interstitial sites and two partial vacancies, and by vacancy migration. Using the volume diffusion coefficients in the temperature range of 400 600 C, diffusion coefficients for oxygen can be represented by D = 1.90e5 exp (123,382 J/RT) cm2/s and for temperatures between 100 and 300 C the diffusion coefficients can be represented by D = 1.95e10 exp (62484 J/ RT) cm2/s, where the activation energies for uraninite are 123.4 and 62.5 kJ/mol, respectively. Hydrogen diffusion in uraninite appears to be controlled by similar mechanisms as oxygen. Using the volume diffusion coefficients for temperatures between 50 and 700 C, diffusion coefficients for hydrogen can be represented by D = 9.28e6 exp (156,528 J/RT) cm2/s for temperatures between 450 and 700 C and D = 1.39e14 exp (34518 J/RT) cm2/s for temperatures between 50 and 400 C, where the activation energies for uraninite are 156.5 and 34.5 kJ/mol, respectively. Results from these new experiments have implications for isotopic exchange during natural UO2 water interactions. The exceptionally low d18O values of natural uraninites (i.e. 32& to 19.5&) from unconformity-type uranium deposits in Saskatchewan, in conjunction with theoretical and experimental uraninite water and UO3 water fractionation factors, suggest that primary uranium mineralization is not in oxygen isotopic equilibrium with coeval clay and silicate minerals. The low d18O values have been interpreted as resulting from the low temperature overprinting of primary uranium mineralization in the presence of relatively modern meteoric fluids having d18O values of ca. 18&, despite petrographic and U Pb isotope data that indicate limited alteration. Our data show that the anomalously low oxygen isotopic composition of the uraninite from the Athabasca Basin can be due to meteoric water overprinting under reducing conditions, and meteoric water or groundwater can significantly affect the oxygen isotopic composition of spent nuclear fuel in a geologic repository, with minimal change to the chemical composition or texture. Moreover, the rather fast oxygen and hydrogen diffusion coefficients for uraninite, especially at low temperatures, suggest that oxygen and hydrogen diffusion may impart characteristic isotopic signals that can be used to track the route of fissile material.

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

    SciTech Connect (OSTI)

    Metropolis, N.

    1985-01-01

    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.

  8. Chemical behaviour of geothermal silica after precipitation from geothermal fluids with inorganic flocculating agents at the Hawaii Geothermal Project Well-A (HGP-A)

    SciTech Connect (OSTI)

    De Carlo, E.H.

    1987-01-01

    The report summarizes the results of experiments dealing with the problem of removal of waste-silica from spent fluids at the experimental power generating facility in the Puna District of the island of Hawaii. Geothermal discharges from HGP-A represent a mixture of meteoric and seawaters which has reacted at depth with basalts from the Kilauea East Rift Zone under high pressure and temperature. After separation of the steam phase of the geothermal fluid from the liquid phase and a final flashing stage to 100 degrees Celsius and atmospheric pressure, the concentration of the silica increases to approximately 1100 mg/L. This concentration represents five to six times the solubility of amorphous silica in this temperature range. We have evaluated and successfully developed bench scale techniques utilizing adsorptive bubble flotation for the removal of colloidal silica from the spent brine discharge in the temperature range of 60 to 90 degrees C. The methods employed resulted in recovery of up to 90% of the silica present above its amorphous solubility in the experimental temperature range studied.

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

    SciTech Connect (OSTI)

    Janik, C.J.; Nathenson, M.; Scholl, M.A.

    1994-12-31

    Published and new data for chemical and isotopic samples from wells and springs on Kilauea Volcano and vicinity are presented. These data are used to understand processes that determine 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 and dissolution of rock from weathering are the major processes that determine the composition of dissolved constituents in water. Data from coastal springs demonstrate that there is a large thermal system south of the lower east rift of Kilauea. Samples of thermal water from shallow wells in the lower east rift and vicinity have rather variable chemistry indicating that a number of processes operate in the near surface. Water sampled from the available deep wells is different in composition from the shallow thermal water, indicating that generally there is not a significant component of deep water in the shallow wells. Data for samples from available deep wells show significant gradients in chemistry and steam content of the reservoir fluid. These gradients are interpreted to indicate that the reservoir tapped by the existing wells is an evolving vapor-dominated system.

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

    E-Print Network [OSTI]

    V. S. Olkhovsky; M. E. Dolinska

    2009-02-06

    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.

  11. Deposition trends of the Amnicola and Tulare sands, and relevance to the development of asphaltenes in a portion of the Cymric oil field, western San Joaquin Valley, California

    SciTech Connect (OSTI)

    Bell, P. (Irvine Valley College, CA (United States))

    1991-02-01

    The Cymric oil field is located on the southwestern margin of the San Joaquin Valley. The upper productive units include the lower Amnicola, and upper Tulare I and II sandstones. The Amnicola unit ranges from lacustrine to braided stream in depositional environment, it averages about 60 ft thick. The Tulare I and II sands are primarily braided stream to fan delta, with a thickness averaging about 300 ft total in the two units. The oil produced is of low gravity and is currently being produced by steamflood. The area studied is part of Chevron Fee land. Wells containing asphaltenes are strongly correlated to major channels within the producing units. A combination of flushing by meteoric water and possible biodegradation of the oil, which was migrating updip into these sands along higher porosity and permeability trends, resulted in the production of asphaltenes in the wells of a portion of the Cymric field. The development of a detailed stratigraphic framework allowed a recognition of a pattern to the problem wells, and suggested a plan of remediation and further planning for the development of the field. Certain other problem fields could be investigated by detailed stratigraphic means that could lead to better understanding of the placement of future well sites, or development of effective stream drive strategies with concomitant saving of time and field costs.

  12. 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

    2014-01-01

    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.

  13. Hydrogeochemical exploration of the Tecuamburro Volcano region, Guatemala

    SciTech Connect (OSTI)

    Goff, F.; Truesdell, A.H.; Janik, C.J.; Adams, A.; Roldan-M, A.; Meeker, K. (Los Alamos National Lab., NM (USA); Geological Survey, Menlo Park, CA (USA); Los Alamos National Lab., NM (USA); Instituto Nacional de Electrificacion, Guatemala City (Guatemala). Unidad de Desarollo Geotermico; Los Alamos National Lab., NM (USA))

    1989-01-01

    Approximately 100 thermal and nonthermal water samples and 20 gas samples from springs and fumaroles have been chemically and isotopically analyzed to help evaluate the geothermal potential of the Tecuamburro Volcano region, Guatemala. Thermal waters of the acid- sulfate, steam condensate, and neutral-chloride types generally occur in restricted hydrogeologic areas: Tecuamburro-Laguna Ixpaco (acid- sulfate); andesite highland north of Tecuamburro (steam-condensate); Rio Los Esclavos (neutral-chloride). One small area of neutral-chloride springs east of the village of Los Esclavos has no relation to the Tecuamburro geothermal system. Neutral-chloride springs on the Rio Los Esclavos east and southeast of Tecuamburro show mixing with various types of groundwaters and display a maximum oxygen-18 enrichment compared to the world meteoric line of only about 1.5 parts per thousand. Maximum estimated subsurface temperatures are {le}200{degree}C. In contrast, maximum estimated subsurface temperatures based on gas compositions in the Laguna Ixpaco area are about 300{degree}C. The relation of neutral-chloride waters to the overall Tecuamburro geothermal system is not entirely resolved but we have suggested two system models. Regardless of model, we believe that a first exploration drill hole should be sited within 0.5 km of Laguna Ixpaco to tap the main geothermal reservoir or its adjacent, main upflow zone. 9 refs., 4 figs., 3 tabs.

  14. Solar UV radiation exposure of seamen - Measurements, calibration and model calculations of erythemal irradiance along ship routes

    SciTech Connect (OSTI)

    Feister, Uwe; Meyer, Gabriele; Kirst, Ulrich

    2013-05-10

    Seamen working on vessels that go along tropical and subtropical routes are at risk to receive high doses of solar erythemal radiation. Due to small solar zenith angles and low ozone values, UV index and erythemal dose are much higher than at mid-and high latitudes. UV index values at tropical and subtropical Oceans can exceed UVI = 20, which is more than double of typical mid-latitude UV index values. Daily erythemal dose can exceed the 30-fold of typical midlatitude winter values. Measurements of erythemal exposure of different body parts on seamen have been performed along 4 routes of merchant vessels. The data base has been extended by two years of continuous solar irradiance measurements taken on the mast top of RV METEOR. Radiative transfer model calculations for clear sky along the ship routes have been performed that use satellite-based input for ozone and aerosols to provide maximum erythemal irradiance and dose. The whole data base is intended to be used to derive individual erythemal exposure of seamen during work-time.

  15. Object detection utilizing a linear retrieval algorithm for thermal infrared imagery

    SciTech Connect (OSTI)

    Ramsey, M.S. [Arizona State Univ., Tempe, AZ (United States)

    1996-11-01

    Thermal infrared (TIR) spectroscopy and remote sensing have been proven to be extremely valuable tools for mineralogic discrimination. One technique for sub-pixel detection and data reduction, known as a spectral retrieval or unmixing algorithm, will prove useful in the analysis of data from scheduled TIR orbital instruments. This study represents the first quantitative attempt to identify the limits of the model, specifically concentrating on the TIR. The algorithm was written and applied to laboratory data, testing the effects of particle size, noise, and multiple endmembers, then adapted to operate on airborne Thermal Infrared Multispectral Scanner data of the Kelso Dunes, CA, Meteor Crater, AZ, and Medicine Lake Volcano, CA. Results indicate that linear spectral unmixmg can produce accurate endmember detection to within an average of 5%. In addition, the effects of vitrification and textural variations were modeled. The ability to predict mineral or rock abundances becomes extremely useful in tracking sediment transport, decertification, and potential hazard assessment in remote volcanic regions. 26 refs., 3 figs.

  16. The red rain phenomenon of Kerala and its possible extraterrestrial origin

    E-Print Network [OSTI]

    Godfrey Louis; A. Santhosh Kumar

    2006-01-02

    A red rain phenomenon occurred in Kerala, India starting from 25th July 2001, in which the rainwater appeared coloured in various localized places that are spread over a few hundred kilometers in Kerala. Maximum cases were reported during the first 10 days and isolated cases were found to occur for about 2 months. The striking red colouration of the rainwater was found to be due to the suspension of microscopic red particles having the appearance of biological cells. These particles have no similarity with usual desert dust. An estimated minimum quantity of 50,000 kg of red particles has fallen from the sky through red rain. An analysis of this strange phenomenon further shows that the conventional atmospheric transport processes like dust storms etc. cannot explain this phenomenon. The electron microscopic study of the red particles shows fine cell structure indicating their biological cell like nature. EDAX analysis shows that the major elements present in these cell like particles are carbon and oxygen. Strangely, a test for DNA using Ethidium Bromide dye fluorescence technique indicates absence of DNA in these cells. In the context of a suspected link between a meteor airburst event and the red rain, the possibility for the extraterrestrial origin of these particles from cometary fragments is discussed.

  17. 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))

    1990-08-01

    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.

  18. Response to"Analysis of the Treatment, by the U.S. Department of Energy, of the FEP Hydrothermal Activity in the Yucca Mountain Performance Assessment" by Yuri Dublyansky

    SciTech Connect (OSTI)

    Houseworth, J.E.; Hardin, E.

    2008-11-17

    This paper presents a rebuttal to Dublyansky (2007), which misrepresents technical issues associated with hydrothermal activity at the proposed Yucca Mountain nuclear waste repository and their importance to the long-term performance of the repository. In this paper, questions associated with hydrothermal activity are reviewed and the justification for exclusion of hydrothermal activity from performance assessment is presented. The hypothesis that hydrothermal upwelling into the present-day unsaturated zone has occurred at Yucca Mountain is refuted by the unambiguous evidence that secondary minerals and fluid inclusions in the unsaturated zone formed in an unsaturated environment from downward percolating meteoric waters. The thermal history at Yucca Mountain, inferred from fluid inclusion and isotopic data, is explained in terms of the tectonic extensional environment and associated silicic magmatism. The waning of tectonic extension over millions of years has led to the present-day heat flux in the Yucca Mountain region that is below average for the Great Basin. The long time scales of tectonic processes are such that any effects of a resumption of extension or silicic magmatism on hydrothermal activity at Yucca Mountain over the 10,000-year regulatory period would be negligible. The conclusion that hydrothermal activity was incorrectly excluded from performance assessment as asserted in Dublyansky (2007) is contradicted by the available technical and regulatory information.

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

    SciTech Connect (OSTI)

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

    1988-11-01

    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.

  20. Raft River geoscience case study

    SciTech Connect (OSTI)

    Dolenc, M.R.; Hull, L.C.; Mizell, S.A.; Russell, B.F.; Skiba, P.A.; Strawn, J.A.; Tullis, J.A.

    1981-11-01

    The Raft River Geothermal Site has been evaluated over the past eight years by the United States Geological Survey and the Idaho National Engineering Laboratory as a moderate-temperature geothermal resource. The geoscience data gathered in the drilling and testing of seven geothermal wells suggest that the Raft River thermal reservoir is: (a) produced from fractures found at the contact metamorphic zone, apparently the base of detached normal faulting from the Bridge and Horse Well Fault zones of the Jim Sage Mountains; (b) anisotropic, with the major axis of hydraulic conductivity coincident to the Bridge Fault Zone; (c) hydraulically connected to the shallow thermal fluid of the Crook and BLM wells based upon both geochemistry and pressure response; (d) controlled by a mixture of diluted meteoric water recharging from the northwest and a saline sodium chloride water entering from the southwest. Although the hydrogeologic environment of the Raft River geothermal area is very complex and unique, it is typical of many Basin and Range systems.

  1. 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

  2. Uranium, thorium isotopic analyses and uranium-series ages of calcite and opal, and stable isotopic compositions of calcite from drill cores UE25a No. 1, USW G-2 and USW G-3/GU-3, Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Szabo, B.J.; Kyser, T.K.

    1985-12-31

    Fracture and cavity filling calcite and opal in the unsaturated zone of three drill cores at Yucca Mountain were analyzed for uranium and stable isotope contents, and were dated by the uranium-series method. Stable isotope data indicate that the water from which the calcite precipitated was meteoric in origin. The decrease in {sup 18}O and increase in {sup 13}C with depth are interpreted as being due to the increase in temperature in drill holes corresponding to an estimated maximum geothermal gradient of 43{sup 0} per km. Of the eighteen calcite and opal deposits dated, four of the calcite and all four of the opal deposits yield dates older than 400,000 years and ten of the remaining calcite deposits yield dates between 26,000 and 310,000 years. The stable isotope and uranium data together with the finite uranium-series dates of precipitation suggest a complex history of fluid movements, rock and water interactions, and episodes of fracture filling during the last 310,000 years. 10 refs., 7 figs., 4 tabs.

  3. Installation of a Hydrologic Characterization Network for Vadose Zone Monitoring of a Single-Shell Tank Farm at the U. S. Department of Energy Hanford Site

    SciTech Connect (OSTI)

    Gee, Glendon W. ); Ward, Anderson L. ); Ritter, Jason C. ); Sisson, James B.; Hubbell, Joel M.; Sydnor, Harold A.

    2001-10-30

    The Pacific Northwest National Laboratory, in collaboration with the Idaho National Engineering and Environmental Laboratory and Duratek Federal Services, deployed a suite of vadose-zone instruments at the B Tank Farm in the 200 E Area of the Hanford Site, near Richland, Washington, during the last quarter of FY 2001. The purpose of the deployment was to obtain in situ hydrologic characterization data within the vadose zone of a high-level-waste tank farm. Eight sensor nests, ranging in depth from 67 m (220 ft) below ground surface (bgs) to 0.9 m (3 ft) bgs were placed in contact with vadose-zone sediments inside a recently drilled, uncased, borehole (C3360) located adjacent to Tank B-110. The sensor sets are part of the Vadose Zone Monitoring System and include advanced tensiometers, heat dissipation units, frequency domain reflectometers, thermal probes, and vadose zone solution samplers. Within the top meter of the surface, a water flux meter was deployed to estimate net infiltration from meteoric water (rain and snowmelt) sources. In addition, a rain gage was located within the tank farm to document on-site precipitation events. All sensor units, with the exception of the solution samplers, were connected to a solar-powered data logger located within the tank farm. Data collected from these sensors are currently being accessed by modem and cell phone and will be analyzed as part of the DOE RL31SS31 project during the coming year (FY 2001).

  4. Virginia Regional Seismic Network. Final report (1986--1992)

    SciTech Connect (OSTI)

    Bollinger, G.A.; Sibol, M.S.; Chapman, M.C.; Snoke, J.A. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (US). Seismological Observatory

    1993-07-01

    In 1986, the Virginia Regional Seismic Network was one of the few fully calibrated digital seismic networks in the United States. Continued operation has resulted in the archival of signals from 2,000+ local, regional and teleseismic sources. Seismotectonic studies of the central Virginia seismic zone showed the activity in the western part to be related to a large antiformal structure while seismicity in the eastern portion is associated spatially with dike swarms. The eastern Tennessee seismic zone extends over a 300x50 km area and is the result of a compressive stress field acting at the intersection between two large crustal blocks. Hydroseismicity, which proposes a significant role for meteoric water in intraplate seismogenesis, found support in the observation of common cyclicities between streamflow and earthquake strain data. Seismic hazard studies have provided the following results: (1) Damage areas in the eastern United States are three to five times larger than those observed in the west. (2) Judged solely on the basis of cataloged earthquake recurrence rates, the next major shock in the southeast region will probably occur outside the Charleston, South Carolina area. (3) Investigations yielded necessary hazard parameters (for example, maximum magnitudes) for several sites in the southeast. Basic to these investigations was the development and maintenance of several seismological data bases.

  5. Response of Alum Rock springs to the October 30, 2007 Alum Rock earthquake and implications for the origin of increased discharge after earthquake

    SciTech Connect (OSTI)

    Rowland, Joel C [Los Alamos National Laboratory; Manga, Michael [UC BERKELEY

    2009-01-01

    The origin of increased stream flow and spring discharge following earthquakes have been the subject of controversy, in large part because there are many models to explain observations and few measurements suitable for distinguishing between hypotheses. On October 30, 2007 a magnitude 5.5 earthquake occurred near the Alum Rock springs, California, USA. Within a day we documented a several-fold increase in discharge. Over the following year, we have monitored a gradual return towards pre-earthquake properties, but for the largest springs there appears to be a permanent increase in the steady discharge at all the springs. The Alum Rock springs discharge waters that represent a mixture between modern ('shallow') meteoric water and old ('deep') connate waters expelled by regional transpression. After the earthquake, the increased discharge at the largest springs was accompanied by a small decrease in the fraction of connate water in the spring discharge. Combined with the rapid response, this implies that the increased discharge has a shallow origin. Increased discharge at these springs occurs for earthquakes that cause static volumetric expansion and those that cause contraction, supporting models in which dynamic strains are responsible for the subsurface changes that cause flow to increase. We show that models in which the permeability of the fracture system feeding the springs increases after the earthquake are in general consistent with the changes in discharge. The response of these springs to another earthquake will provide critical constraints on the changes that occur in the subsurface.

  6. In Vitro and In Vivo Evaluation of a Novel Ferrocyanide Functionalized Nanopourous Silica Decorporation Agent for Cesium in Rats

    SciTech Connect (OSTI)

    Timchalk, Charles; Creim, Jeffrey A.; Sukwarotwat, Vichaya; Wiacek, Robert J.; Addleman, Raymond S.; Fryxell, Glen E.; Yantasee, Wassana

    2010-09-01

    Novel decorporation agents are being developed to protect against radiological terrorist attacks. These sorbents, known as the self-assembled monolayer on mesoporous supports (SAMMS™), are hybrid materials where differing organic moieties are grafted onto mesoporous silica (SiO2). In vitro experiments focused on the evaluation, and optimization of SAMMS for capturing radiocesium (137Cs); based on these studies, a ferrocyanide copper (FC-Cu-EDA)-SAMMS was advanced for in vivo evaluation. In vivo experiments were conducted comparing the performance of the SAMMS vs. insoluble Prussian blue. Groups of jugular cannulated rats (4/treatment) were evaluated. Group I was administered 137Cs (~40 ?geq/kg) by intravenous (iv) injection and oral gavage; Group II was administered pre-bound 137Cs-SAMMS and sequential 137Cs + SAMMS (~61 ngeq/kg) by oral gavage; and Group III evaluated orally administered 137Cs (~0.06 ?geq/kg) followed by 0.1 g of either SAMMS or Prussian blue. Following dosing the rats were maintained in metabolism cages for 72 hour and blood, urine and fecal samples were collected for 137Cs analysis (gamma counting). Rats were then humanely euthanized, and selected tissues analyzed. Orally administered 137Cs was rapidly and well absorbed (~100% relative to iv dose), and the pharmacokinetics (blood, urine, feces & tissues) were very comparable to the iv dose group. For both exposures the urine and feces accounted for 20 and 3% of the dose, respectively. The prebound 137Cs-SAMMS was retained primarily within the feces (72% of the dose), with ~1.4% detected in the urine, suggesting that the 137Cs remained tightly bound to SAMMS. SAMMS & Prussian blue both effectively captured available 137Cs in the gut with feces accounting for 80-88% of the administered dose, while less than 2% was detected in the urine. This study suggests that the functionalized SAMMS out performs Prussian blue in vitro at low pH, but demonstrates comparable in vivo sequestration efficacy at low exposure concentrations. The comparable response may be the result of the low 137Cs dose and high sorbent dosage that was utilized. Future studies are planned to optimize SAMMS in vivo performance over a broader range of doses and conditions.

  7. Trace element and isotope geochemistry of geothermal fluids, East Rift Zone, Kilauea, Hawaii

    SciTech Connect (OSTI)

    West, H.B.; Delanoy, G.A.; Thomas, D.M. . Hawaii Inst. of Geophysics); Gerlach, D.C. ); Chen, B.; Takahashi, P.; Thomas, D.M. Evans and Associates, Redwood City, CA )

    1992-01-01

    A research program has been undertaken in an effort to better characterize the composition and the precipitation characteristic of the geothermal fluids produced by the HGP-A geothermal well located on the Kilauea East Rift Zone on the Island of Hawaii. The results of these studies have shown that the chemical composition of the fluids changed over the production life of the well and that the fluids produced were the result of mixing of at least two, and possibly three, source fluids. These source fluids were recognized as: a sea water composition modified by high temperature water-rock reactions; meteoric recharge; and a hydrothermal fluid that had been equilibrated with high temperature reservoir rocks and magmatic volatiles. Although the major alkali and halide elements show clearly increasing trends with time, only a few of the trace transition metals show a similar trend. The rare earth elements, were typically found at low concentrations and appeared to be highly variable with time. Studies of the precipitation characteristics of silica showed that amorphous silica deposition rates were highly sensitive to fluid pH and that increases in fluid pH above about 8.5 could flocculate more than 80% of the suspended colloidal silica in excess of its solubility. Addition of transition metal salts were also found to enhance the recovery fractions of silica from solution. The amorphous silica precipitate was also found to strongly scavenge the alkaline earth and transition metal ions naturally present in the brines; mild acid treatments were shown to be capable of removing substantial fractions of the scavenged metals from the silica flocs yielding a moderately pure gelatinous by-product. Further work on the silica precipitation process is recommended to improve our ability to control silica scaling from high temperature geothermal fluids or to recover a marketable silica by-product from these fluids prior to reinjection.

  8. Stable isotope and groundwater flow dynamics of agricultural irrigation recharge into groundwater resources of the Central Valley, California

    SciTech Connect (OSTI)

    Davisson, M.L.; Criss, R.E.

    1995-01-01

    Intensive agricultural irrigation and overdraft of groundwater in the Central Valley of California profoundly affect the regional quality and availability of shallow groundwater resources. In the natural state, the {delta}{sup 18}O values of groundwater were relatively homogeneous (mostly -7.0 {+-} 0.5{per_thousand}), reflecting local meteoric recharge that slowly (1-3m/yr) flowed toward the valley axis. Today, on the west side of the valley, the isotope distribution is dominated by high {sup 18}O enclosures formed by recharge of evaporated irrigation waters, while the east side has bands of low {sup 18}O groundwater indicating induced recharge from rivers draining the Sierra Nevada mountains. Changes in {delta}{sup 18}O values caused by the agricultural recharge strongly correlate with elevated nitrate concentrations (5 to >100 mg/L) that form pervasive, non-point source pollutants. Small, west-side cities dependent solely on groundwater resources have experienced increases of >1.0 mg/L per year of nitrate for 10-30 years. The resultant high nitrates threaten the economical use of the groundwater for domestic purposes, and have forced some well shut-downs. Furthermore, since >80% of modern recharge is now derived from agricultural irrigation, and because modern recharge rates are {approximately}10 times those of the natural state, agricultural land retirement by urbanization will severely curtail the current safe-yields and promote overdraft pumping. Such overdrafting has occurred in the Sacramento metropolitan area for {approximately}40 years, creating cones of depression {approximately}25m deep. Today, groundwater withdrawal in Sacramento is approximately matched by infiltration of low {sup 18}O water (-11.0{per_thousand}) away from the Sacramento and American Rivers, which is estimated to occur at 100-300m/year from the sharp {sup 18}O gradients in our groundwater isotope map.

  9. The boron isotope systematics of the Yellowstone National Park (Wyoming) hydrothermal system: A reconnaissance

    SciTech Connect (OSTI)

    Palmer, M.R. (Bristol Univ. (England)); Sturchio, N.C. (Argonne National Lab., IL (USA))

    1990-10-01

    Boron concentrations and isotope compositions have been measured in fourteen hot spring waters, two drill hole waters, an unaltered rhyolite flow, and hydrothermally altered rhyolite from the geothermal system in Yellowstone National Park, Wyoming. The samples are representative of the major thermal areas within the park and span the range of fluid types. For the fluids, the B concentrations range from 0.043-2.69 mM/kg, and the {delta}{sup 11}B values range from {minus}9.3 to +4.4{per thousand}. There is no relationship between the dissolved B concentrations or isotope compositions with the concentration of any major element (other than Cl) or physical property. Each basin is characterized by a restricted range in B/Cl ratios and {delta}{sup 11}B values. Hot spring waters from the Norris Basin, Upper Geyser Basin, Calcite Springs, and Clearwater have {delta}{sup 11}B values close to that of unaltered rhyolite ({minus}5.2{per thousand}) and are interpreted to have derived their B from this source. Waters from Mammoth Hot Springs, Sheepeater, and Rainbow Springs have lower {delta}{sup 11}B values close to {minus}8{per thousand}. These lower values may reflect leaching of B from sedimentary rocks outside the Yellowstone caldera, but they are similar to the {delta}{sup 11}B value of hydrothermally altered rhyolite ({minus}9.7{per thousand}). Hence, the light boron isotope compositions recorded in these hot spring waters may reflect leaching of previously deposited hydrothermal minerals. Cooler springs along the Yellowstone River just outside the park boundary have lower B concentrations and higher {delta}{sup 11}B values that may reflect mixing with shallow meteoric water.

  10. Low-(18)O Silicic Magmas: Why Are They So Rare?

    SciTech Connect (OSTI)

    Balsley, S.D.; Gregory, R.T.

    1998-10-15

    LOW-180 silicic magmas are reported from only a small number of localities (e.g., Yellowstone and Iceland), yet petrologic evidence points to upper crustal assimilation coupled with fractional crystallization (AFC) during magma genesis for nearly all silicic magmas. The rarity of 10W-l `O magmas in intracontinental caldera settings is remarkable given the evidence of intense 10W-l*O meteoric hydrothermal alteration in the subvolcanic remnants of larger caldera systems. In the Platoro caldera complex, regional ignimbrites (150-1000 km3) have plagioclase 6180 values of 6.8 + 0.1%., whereas the Middle Tuff, a small-volume (est. 50-100 km3) post-caldera collapse pyroclastic sequence, has plagioclase 8]80 values between 5.5 and 6.8%o. On average, the plagioclase phenocrysts from the Middle Tuff are depleted by only 0.3%0 relative to those in the regional tuffs. At Yellowstone, small-volume post-caldera collapse intracaldera rhyolites are up to 5.5%o depleted relative to the regional ignimbrites. Two important differences between the Middle Tuff and the Yellowstone 10W-180 rhyolites elucidate the problem. Middle Tuff magmas reached water saturation and erupted explosively, whereas most of the 10W-l 80 Yellowstone rhyolites erupted effusively as domes or flows, and are nearly devoid of hydrous phenocrysts. Comparing the two eruptive types indicates that assimilation of 10W-180 material, combined with fractional crystallization, drives silicic melts to water oversaturation. Water saturated magmas either erupt explosively or quench as subsurface porphyrins bejiire the magmatic 180 can be dramatically lowered. Partial melting of low- 180 subvolcanic rocks by near-anhydrous magmas at Yellowstone produced small- volume, 10W-180 magmas directly, thereby circumventing the water saturation barrier encountered through normal AFC processes.

  11. Coupled variations in helium isotopes and fluid chemistry: Shoshone Geyser Basin, Yellowstone National Park

    SciTech Connect (OSTI)

    Hearn, E.H.; Kennedy, B.M. (Univ. of California, Berkeley (USA)); Truesdell, A.H. (Geological Survey, Menlo Park, CA (USA))

    1990-11-01

    Early studies of {sup 3}He/{sup 4}He variations in geothermal systems have generally attributed these fluctuations to either differences in the source of the magmatic {sup 3}He-rich helium or to local differences in the deep flux of magmatic {sup 3}He-rich helium. Kennedy et al, however, show that near-surface processes such as boiling and dilution may also drastically affect {sup 3}He/{sup 4}He ratios of geothermal vapors. Helium isotope ratios were determined for several hot springs at Shoshone Geyser Basin of Yellowstone National Park for this study, along with other noble gas data. Stable isotope data and water and gas chemistry data for each spring were also compiled. The water chemistry indicates that there is one deep, hot thermal water in the area which is mixing with dilute meteoric water that has entered the system at depth. Spring HCO{sub 3}{sup {minus}} concentrations correlate with {sup 3}He/{sup 4}He values, as in nearby Lower Geyser Basin. This correlation is attributed to variable amounts of deep dilution of thermal waters with a relatively cool water that inhibits boiling at depth, thus preventing the loss of CO{sub 2} and magmatic He in the most diluted samples. Oxygen and hydrogen isotope data also support a boiling and dilution model, but to produce the observed fractionations, the boiling event would have to be extensive, with steam loss at the surface, whereas the boiling that affected the helium isotope ratios was probably a small scale event with steam loss at depth. It is possible that deep boiling occurred in the basin and that small amounts of steam escaped along fractures at about 500 m below the surface while all subsequently produced steam was lost near or at the surface.

  12. Where does streamwater come from in low-relief forested watersheds? A dual-isotope approach

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

    Klaus, J.; McDonnell, J. J.; Jackson, C. R.; Du, E.; Griffiths, N. A.

    2015-01-08

    The time and geographic sources of streamwater in low-relief watersheds are poorly understood. This is partly due to the difficult combination of low runoff coefficients and often damped streamwater isotopic signals precluding traditional hydrograph separation and convolution integral approaches. Here we present a dual-isotope approach involving 18O and 2H of water in a low-angle forested watershed to determine streamwater source components and then build a conceptual model of streamflow generation. We focus on three headwater lowland sub-catchments draining the Savannah River Site in South Carolina, USA. Our results for a 3-year sampling period show that the slopes of the meteoricmore »water lines/evaporation water lines (MWLs/EWLs) of the catchment water sources can be used to extract information on runoff sources in ways not considered before. Our dual-isotope approach was able to identify unique hillslope, riparian and deep groundwater, and streamflow compositions. Thus, the streams showed strong evaporative enrichment compared to the local meteoric water line (?2H = 7.15 · ?18O +9.28‰) with slopes of 2.52, 2.84, and 2.86. Based on the unique and unambiguous slopes of the EWLs of the different water cycle components and the isotopic time series of the individual components, we were able to show how the riparian zone controls baseflow in this system and how the riparian zone "resets" the stable isotope composition of the observed streams in our low-angle, forested watersheds. Although this approach is limited in terms of quantifying mixing percentages between different end-members, our dual-isotope approach enabled the extraction of hydrologically useful information in a region with little change in individual isotope time series.« less

  13. The sup 36 Cl ages of the brines in the Magadi-Natron basin, east Africa

    SciTech Connect (OSTI)

    Kaufman, A.; Margaritz, M.A.; Hollos, G. ); Paul, M.; Boaretto, E. ); Hillaire-Marcel, C. ); Taieb, M. )

    1990-10-01

    The depression in the East African Rift which includes both Lake Magadi and Lake Natron forms a closed basin within which almost all the dissolved chloride originates in precipitation, since there is no important source of very ancient sedimentary chloride. This provides an ideal setting for the evaluation of the {sup 36}Cl methodology as a geochemical and hydrological tracer. The main source of recent water, as represented by the most dilute samples measured, is characterized by a {sup 36}Cl/Cl ratio of 2.5 {times} 10{sup {minus}14}, in agreement with the calculated value expected in precipitation. Surface evaporation increases the chlorinity of the local freshwater inflow by about a factor of 110 without changing the isotopic ratio, indicating that little chloride enters the system in the form of sediment leachate. A second type of brine found in the basin occurs in a hot deep groundwater reservoir and is characterized by lower {sup 36}Cl/Cl ratios (<1.2 {times} 10{sup {minus}14}). By comparing this value with the 2.5 {times} 10{sup {minus}14} in recent recharge, one obtains an approximate salt accumulation age of 760 Ka which is consistent with thee time of the first appearance of the lake. These older brines also have lower {sup 18}O and {sup 2}H values which indicate that they were recharged during a climatically different era. The {sup 36}Cl/Cl ratios in the inflowing waters and in the accumulated brine, together with the known age of the Lake Magadi basin, may be used to estimate the importance of the hypogene and epigene, as opposed to the meteoric, mode of {sup 36}Cl production. Such a calculation shows that the hypogene and epigene processes together contribute less than 6% of the total {sup 36}Cl present in the lake.

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

    SciTech Connect (OSTI)

    Romero, A.E. Jr.

    1995-05-01

    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.

  15. Characterization of Climax granite ground water

    SciTech Connect (OSTI)

    Isherwood, D.; Harrar, J.; Raber, E.

    1982-08-01

    The Climax ground water fails to match the commonly held views regarding the nature of deep granitic ground waters. It is neither dilute nor in equilibrium with the granite. Ground-water samples were taken for chemical analysis from five sites in the fractured Climax granite at the Nevada Test Site. The waters are high in total dissolved solids (1200 to 2160 mg/L) and rich in sodium (56 to 250 mg/L), calcium (114 to 283 mg/L) and sulfate (325 to 1060 mg/L). Two of the samples contained relatively high amounts of uranium (1.8 and 18.5 mg/L), whereas the other three contained uranium below the level of detection (< 0.1 mg/L). The pH is in the neutral range (7.3 to 8.2). The differences in composition between samples (as seen in the wide range of values for the major constituents and total dissolved solids) suggest the samples came from different, independent fracture systems. However, the apparent trend of increasing sodium with depth at the expense of calcium and magnesium suggests a common evolutionary chemical process, if not an interconnected system. The waters appear to be less oxidizing with depth (+ 410 mV at 420 m below the surface vs + 86 mV at 565 m). However, with Eh measurements on only two samples, this correlation is questionable. Isotopic analyses show that the waters are of meteoric origin and that the source of the sulfate is probably the pyrite in the fracture-fill material. Analysis of the measured water characteristics using the chemical equilibrium computer program EQ3 indicates that the waters are not in equilibrium with the local mineral assemblage. The solutions appear to be supersaturated with respect to the mineral calcite, quartz, kaolinite, muscovite, k-feldspar, and many others.

  16. An early look of comet C/2013 A1 (Siding Spring): Breathtaker or nightmare?

    SciTech Connect (OSTI)

    Ye, Quan-Zhi; Hui, Man-To

    2014-06-01

    The dynamically new comet, C/2013 A1 (Siding Spring), is to make a close approach to Mars on 2014 October 19 at 18:30 UT at a distance of 40 ± 1 Martian radii. Such an extremely rare event offers a precious opportunity for the spacecrafts on Mars to closely study a dynamically new comet itself as well as the planet-comet interaction. Meanwhile, the high-speed meteoroids released from C/Siding Spring also pose a threat to physically damage the spacecrafts. Here we present our observations and modeling results of C/Siding Spring to characterize the comet and assess the risk posed to the spacecrafts on Mars. We find that the optical tail of C/Siding Spring is dominated by larger particles at the time of the observation. Synchrone simulation suggests that the comet was already active in late 2012 when it was more than 7 AU from the Sun. By parameterizing the dust activity with a semi-analytic model, we find that the ejection speed of C/Siding Spring is comparable to comets such as the target of the Rosetta mission, 67P/Churyumov-Gerasimenko. Under a nominal situation, the simulated dust cone will miss the planet by about 20 Martian radii. At the extreme ends of uncertainties, the simulated dust cone will engulf Mars, but the meteoric influx at Mars is still comparable to the nominal sporadic influx, seemly indicating that an intense and enduring meteoroid bombardment due to C/Siding Spring is unlikely. Further simulation also suggests that gravitational disruption of the dust tail may be significant enough to be observable at Earth.

  17. 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)

    1992-12-31

    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.

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

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

    Miller, Clay

    2010-01-01

    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.

  19. 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.

  20. Paint Rock and southwest Paint Rock fields, Concho County, Texas: Strawn analogs of modern island carbonate facies of Ambergris Cay, Belize

    SciTech Connect (OSTI)

    Reid, A.M.; Mazzullo, S.J.

    1987-02-01

    Lower Strawn (Desmoinesian Goen Limestone) reservoirs at Paint Rock and Southwest Paint Rock fields are a complex of carbonate and associated facies interpreted as having been deposited in various environments on and around large, emergent islands on shallow carbonate shelves. The origin and geometries of the component lithofacies in these fields, and their reservoir diagenetic histories, are similar to those presently accumulating on Ambergris Cay, a linear island complex on the northern shelf of Belize. Paint Rock field originated as a narrow, elongate Chaetetes reef trend that formed the foundation on which the overlying island facies were deposited. As on Ambergris Cay, these reef limestones developed extensive porosity during postdepositional subaerial exposure due to meteoric leaching. In contrast, Southwest Paint Rock field is cored by older island deposits rather than reef limestones. With ensuing stillstand or subsequent sea level rise, beach grainstones were deposited along the windward and leeward margins of the foundation highs in these fields. Tight lagoonal micrites and coals (peat-swamp facies) comprise the inner island facies, and are locally associated with porous supratidal dolomites. These island complexes are transected locally by tidal channels that are filled with nonporous micrites. Repeated sea level fluctuations during the history of these fields resulted in a characteristic cyclic stratigraphy of stacked island facies and reservoirs. The reservoirs in the field are developed in the bedrock or older island cores, as well as in the overlying beach facies and supratidal dolomites. These fields are mappable as linear stratigraphic traps with low-relief closure, and are readily identified by subsurface geologic and facies analyses. Similar shelf island-type fields analogous to these strawn and Holocene Belizean examples are found throughout the Midland basin and Eastern shelf.

  1. 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)

    2006-12-11

    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.

  2. Ambient H sub 2 S monitoring in the vicinity of Hawaii's first geothermal power plant

    SciTech Connect (OSTI)

    Morrow, J.W. ); Thomas, D.M. ); Burkard, H.D. )

    1988-01-01

    In December, 1975, work began on Hawaii's first successful geothermal well in the East Rift Zone of Kilauea Volcano on the Island of Hawaii (Figure 1). By July, 1976, the well, named Hawaii Geothermal Project - A (HGP-A), was complete to a depth of almost 2 km and had encountered a volcanically driven hydrothermal system having a temperature in excess of 358{degrees} C and a fluid chemistry composed of a mixture of seawater, meteoric water, and volcanic volatiles. The principal chemical constituents of the fluid are listed in Table I. Note the relatively high H{sub 2}S concentration which ranged 900 - 1,000 ppmw. During the early testing of the well, the superheated geothermal fluid was allowed to flash at normal atmospheric pressure with steam and noncondensable gases being released unabated into the atmosphere. The high H{sub 2}S and noise (120 dBA) levels and the close proximity of the Leilani Estates residential subdivision were cause for concern and efforts were thus made to mitigate these impacts. Certain elements of the initial test protocol required that the well be allowed to flow freely and unabated. During these periods public notice and prewarning were the most feasible means of mitigation. At other times, the mixed fluid is separated into steam and brine phases with the steam phase being treated with NaOH and then released through a rock muffler. The brine phase is released through a separate muffling system. Chemical treatment of the stream with NaOH converts the H{sub 2}S into a soluble sulfide salt through the following reaction: H{sub 2}S(g) + NaOH {r arrow} NaHS(s) + H{sub 2}O. This paper discusses early flow testing revealed that the well was able to produce a steady flow of approximately 50,000 kg per hour of steam and water at a pressure of 1200 kPA and thus appeared suitable for power generation.

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

    SciTech Connect (OSTI)

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

    2012-07-01

    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)

  4. 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

    2013-10-31

    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.

  5. 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.

    2010-01-01

    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.

  6. 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.

    2011-01-24

    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.