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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Modern Records of Atmospheric Carbon Dioxide (CO2) and a 2000-year Ice-core  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Dioxide (CO2) » Ice Cores Carbon Dioxide (CO2) » Ice Cores Modern Records of Atmospheric Carbon Dioxide (CO2) and a 2000-year Ice-core Record from Law Dome, Antarctica Introduction This page provides an introduction and links to records of atmospheric carbon dioxide (CO2) concentrations over the last 2000 years, emphasizing large data bases each representing many currently active stations. Records since about 1960 (depending on location) have been obtained from samples of ambient-air at remote stations, which represent changing global atmospheric concentrations rather than influences of local sources. The longer (2000-year) record is from the Law Dome ice core in Antarctica. The ice-core record has been merged with modern annual data from Cape Grim, Tasmania to provide a 2000-year record ending with the most recent data. A

2

Modern Records of Atmospheric Methane (CH4) and a 2000-year Ice-core Record  

NLE Websites -- All DOE Office Websites (Extended Search)

(CH4) » Ice Cores (CH4) » Ice Cores Modern Records of Atmospheric Methane (CH4) and a 2000-year Ice-core Record from Law Dome, Antarctica Introduction This page provides an introduction and links to records of atmospheric methane (CH4) over the last 2000 years, emphasizing large data bases each representing currently active stations. Records in recent decades (time period depending on location) have been obtained from samples of ambient-air at remote locations, which represent global atmospheric conditions rather than influences of local sources. The longer (2000-year) record is from the Law Dome ice core in Antarctica. The ice-core record has been merged with modern annual data from Cape Grim, Tasmania to provide a 2000-year record ending with the most recent data. A spline function has

3

Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core  

NLE Websites -- All DOE Office Websites (Extended Search)

Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core Record from Law Dome, Antarctica Introduction This page provides an introduction and links to records of atmospheric nitrous oxide (N2O) over the last 2000 years, emphasizing large data bases each representing currently active stations. Records in recent decades (time period depending on location) have been obtained from samples of ambient-air at remote locations, which represent changing global atmospheric conditions rather than influences of local sources. The longer (2000-year) record is from the Law Dome ice core in Antarctica. The ice-core record has been merged with modern annual data from Cape Grim, Tasmania to provide a 2000-year time series of annual values. A spline function has been fit to the data to provide a continuous time series of

4

Historical Carbon Dioxide Record from the Vostok Ice Core  

NLE Websites -- All DOE Office Websites (Extended Search)

Vostok Ice Core Historical Carbon Dioxide Record from the Vostok Ice Core graphics Graphics data Data Investigators J.-M. Barnola, D. Raynaud, C. Lorius Laboratoire de Glaciologie...

5

Historical Carbon Dioxide Record from the Siple Station Ice Core  

NLE Websites -- All DOE Office Websites (Extended Search)

Siple Station Ice Core Historical Carbon Dioxide Record from the Siple Station Ice Core graphics Graphics data Data Investigators A. Neftel, H. Friedli, E. Moor, H. Ltscher, H....

6

THE SPITZER ICE LEGACY: ICE EVOLUTION FROM CORES TO PROTOSTARS  

Science Conference Proceedings (OSTI)

Ices regulate much of the chemistry during star formation and account for up to 80% of the available oxygen and carbon. In this paper, we use the Spitzer c2d Legacy ice survey, complimented with data sets on ices in cloud cores and high-mass protostars, to determine standard ice abundances and to present a coherent picture of the evolution of ices during low- and high-mass star formation. The median ice composition H{sub 2}O:CO:CO{sub 2}:CH{sub 3}OH:NH{sub 3}:CH{sub 4}:XCN is 100:29:29:3:5:5:0.3 and 100:13:13:4:5:2:0.6 toward low- and high-mass protostars, respectively, and 100:31:38:4:-:-:- in cloud cores. In the low-mass sample, the ice abundances with respect to H{sub 2}O of CH{sub 4}, NH{sub 3}, and the component of CO{sub 2} mixed with H{sub 2}O typically vary by ice components, XCN, and CH{sub 3}OH vary by factors 2-10 between the lower and upper quartile. The XCN band correlates with CO, consistent with its OCN{sup -} identification. The origin(s) of the different levels of ice abundance variations are constrained by comparing ice inventories toward different types of protostars and background stars, through ice mapping, analysis of cloud-to-cloud variations, and ice (anti-)correlations. Based on the analysis, the first ice formation phase is driven by hydrogenation of atoms, which results in an H{sub 2}O-dominated ice. At later prestellar times, CO freezes out and variations in CO freezeout levels and the subsequent CO-based chemistry can explain most of the observed ice abundance variations. The last important ice evolution stage is thermal and UV processing around protostars, resulting in CO desorption, ice segregation, and the formation of complex organic molecules. The distribution of cometary ice abundances is consistent with the idea that most cometary ices have a protostellar origin.

Oeberg, Karin I. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02139 (United States); Boogert, A. C. Adwin [IPAC, NASA Herschel Science Center, California Institute of Technology, Pasadena, CA 91125 (United States); Pontoppidan, Klaus M. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Van den Broek, Saskia; Van Dishoeck, Ewine F. [Leiden Observatory, Leiden University, 2300 RA Leiden (Netherlands); Bottinelli, Sandrine [Centre d'Etude Spatiale des Rayonnements (CESR), CNRS-UMR 5187, 31028 Toulouse Cedex 4 (France); Blake, Geoffrey A. [California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA 91125 (United States); Evans, Neal J. [Department of Astronomy, University of Texas at Austin, Austin, TX 78712 (United States)

2011-10-20T23:59:59.000Z

7

The Spitzer ice legacy: Ice evolution from cores to protostars  

E-Print Network (OSTI)

Ices regulate much of the chemistry during star formation and account for up to 80% of the available oxygen and carbon. In this paper, we use the Spitzer c2d ice survey, complimented with data sets on ices in cloud cores and high-mass protostars, to determine standard ice abundances and to present a coherent picture of the evolution of ices during low- and high-mass star formation. The median ice composition H2O:CO:CO2:CH3OH:NH3:CH4:XCN is 100:29:29:3:5:5:0.3 and 100:13:13:4:5:2:0.6 toward low- and high-mass protostars, respectively, and 100:31:38:4:-:-:- in cloud cores. In the low-mass sample, the ice abundances with respect to H2O of CH4, NH3, and the component of CO2 mixed with H2O typically vary by ice components, XCN and CH3OH vary by factors 2-10 between the lower and upper quartile. The XCN band correlates with CO, consistent with its OCN- identification. The origin(s) of the different levels of ice abundance variations are cons...

Oberg, Karin I; Pontoppidan, Klaus M; Broek, Saskia van den; van Dishoeck, Ewine F; Bottinelli, Sandrine; Blake, Geoffrey A; Evans, Neal J

2011-01-01T23:59:59.000Z

8

800,000-year Ice-Core Records of Atmospheric Methane (CH4)  

NLE Websites -- All DOE Office Websites (Extended Search)

Methane (CH4) » Ice Cores Methane (CH4) » Ice Cores 800,000-year Ice-Core Records of Atmospheric Methane (CH4) This page introduces ice-core records of methane (CH4) extending back 800,000 years at Dome C, Antarctica and over 400,000 years at the Vostok site. Links are also provided to shorter records from other Antarctic locations. The 2000-year record from Law Dome, Antarctica, has been merged with modern records to create a long-term record to the present. These records are maintained by the World Data Center for Paleoclimatology, National Oceanic and Atmospheric Administration (NOAA), and have graciously been made freely available for access and distribution. The original investigators made the effort to obtain the data and assure their quality. To assure proper credit is given, please follow the citation instructions

9

Ice Cube Observed PeV Neutrinos from AGN Cores  

E-Print Network (OSTI)

I show that the high energy neutrino flux predicted to arise from AGN cores can explain the PeV neutrinos detected by Ice Cube without conflicting with the constraints from the observed extragalactic cosmic ray and gamma-ray backgrounds.

Floyd W. Stecker

2013-05-31T23:59:59.000Z

10

East Antarctic ice core sulfur isotope measurements over a complete glacial-interglacial cycle  

E-Print Network (OSTI)

East Antarctic ice core sulfur isotope measurements over a complete glacial-interglacial cycle B Center and Department of Geology, University of Maryland, College Park, Maryland, USA J. Savarino and R] Both sulfur and oxygen isotopes of sulfate preserved in ice cores from Greenland and Antarctica have

Kaufman, Alan Jay

11

740,000-year Deuterium Record in an Ice Core from Dome C, Antarctica  

NLE Websites -- All DOE Office Websites (Extended Search)

Trace Gases 740,000-year Deuterium Record 740,000-year Deuterium Record in an Ice Core from Dome C, Antarctica graphics Graphics data Data Authors Jean Jouzel Institut...

12

Sleuthing the Fate of Water in Ancient Aquifers and Ice Cores | U.S. DOE  

Office of Science (SC) Website

Sleuthing the Fate of Water in Ancient Aquifers and Ice Cores Sleuthing the Fate of Water in Ancient Aquifers and Ice Cores Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » October 2012 Sleuthing the Fate of Water in Ancient Aquifers and Ice Cores Precision analytical techniques developed for fundamental experiments in nuclear physics now enable routine measurements of ultra-low concentrations of Krypton radioisotopes in samples of water, ice, and gas. Print Text Size: A A A Subscribe FeedbackShare Page

13

Supplemental Text Analysis of the ice core samples  

E-Print Network (OSTI)

into a continuous sequence of samples (NIF2, 2197 samples; NIF3, 1980 samples; SIF1, 706 samples; SIF2, 834 samples and the sixth core, NIF1 (drilled one meter from NIF2) has been reserved for other measurements such as AMS 14 C. These comments follow the dating discussion in chronological order. The net down wasting of the NIF (as discussed

Massachusetts at Amherst, University of

14

Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice Ice Nature Bulletin No. 661-A january 7, 1978 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation ICE There was a time when ice, cut on frozen ponds and lakes, was transported by fast clipper ships from New England to New Orleans where it was worth its weight in gold. Nowadays this cold brittle colorless substance is commonplace everywhere. Few people, however, know that ice is one of the strangest of all solids; and that, because of its unique properties, life on earth is what it is. Those properties are due to the distinctive structure of a molecule of water, formed of three elemental particles or atoms -- two of hydrogen and one of oxygen -- expressed by the familiar symbol, H2O. The three atoms are held together by two chemical bonds expressed by another symbol, H-O-H. Briefly, the unique properties of water, water vapor, and ice arise from that bonding and the arrangement of electron pairs around the oxygen atom.

15

Relationships between tropical cyclone intensity and satellite based indicators of inner core convection: 85 GHz ice scattering signature and lightning  

E-Print Network (OSTI)

A key component in the maintenance and intensification of tropical cyclones is the transverse circulation, which transports mass and momentum and provides latent heat release via inner core convective updrafts. This study examines these updrafts indirectly, using satellite-borne observations of the scattering of upwelling microwave radiation by precipitation sized ice and satellite-borne observations of lightning. The observations are then compared to tropical cyclone intensity and the resulting relationships are assessed. The size of ice particles is tied to updraft strength, in that stronger updrafts produce more supercooled liquid water, leading to larger graupel through riming. Large graupel and a high supercooled liquid water content are necessary ingredients for charge separation, leading to lightning. Various parameters derived from the inner core ice scattering signature are computed for regions encircling hurricanes and typhoons, and observations of lightning activity or inactivity are analyzed. As expected, increasing ice scattering signature is found to correspond to increasing tropical cyclone intensity. However, the highest correlations do not involve indicators of convective intensity, as they were expected to. Instead, the highest correlations with tropical cyclone intensity result from the ice scattering signature parameters most closely associated with the areal extent of at least moderate precipitation rates. Correlations tend to be of the same sign for both present cyclone intensity at the time of the satellite overpass and subsequent intensity change. Correlations are higher for future cyclone intensity than for either of these. These correlations are much higher for the Atlantic and the Eastern North Pacific than for the Western North Pacific. It is hypothesized that processes involved with the most intense or rapidly intensifying tropical cyclones (more commonly found in the Western North Pacific) are responsible for these differences. The lightning observations are more limited than the microwave observations, because the short amount of time in which lightning can be detected may not adequately represent a particular storms electrical activity. These observations reveal no clear relationships between electrical activity and tropical cyclone intensity. In the examination of case studies, the paradoxical situation of much greater lightning activity in rainbands than in eyewalls is noted.

Cecil, Daniel Joseph

1997-01-01T23:59:59.000Z

16

A High-Resolution Record of Atmospheric Dust Composition and Variability since a.d. 1650 from a Mount Everest Ice Core  

Science Conference Proceedings (OSTI)

A Mount Everest ice core analyzed at high resolution for major and trace elements (Sr, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu, Bi, U, Tl, Al, S, Ca, Ti, V, Cr, Mn, Fe, Co) and spanning the period a.d. 16502002 is used to ...

S. Kaspari; P. A. Mayewski; M. Handley; S. Kang; S. Hou; S. Sneed; K. Maasch; D. Qin

2009-07-01T23:59:59.000Z

17

Surface Melting over Ice Shelves and Ice Sheets as Assessed from Modeled Surface Air Temperatures  

Science Conference Proceedings (OSTI)

Summer surface melting plays an important role in the evolution of ice shelves and their progenitor ice sheets. To explore the magnitude of surface melt occurring over modern ice shelves and ice sheets in a climate scenario forced by ...

Jeremy G. Fyke; Lionel Carter; Andrew Mackintosh; Andrew J. Weaver; Katrin J. Meissner

2010-04-01T23:59:59.000Z

18

Scaillet et al. -Ar/Ar dating of the Green Tuff, Pantelleria (p.1/40) JQSR-D-13-00063 Millennial-scale phase relationships between ice-core and  

E-Print Network (OSTI)

-scale phase relationships between ice-core and Mediterranean marine records: insights from high-precision 40-00063 Abstract With the advent of annually-resolved polar ice records extending back to 70 ka, marine of this study. This improved estimate enables potential phase lags and leads to be studied between deep

Recanati, Catherine

19

Late Quaternary Histories of Lakes Huron and Michigan: A Stable Isotope Investigation of Sediment Cores and Modern Biogenic Carbonates.  

E-Print Network (OSTI)

??Late Quaternary histories are investigated here for sediment cores from Lakes Huron and Michigan, using the oxygen- and carbon-isotope compositions of biogenic carbonates and the (more)

Macdonald, Rebecca A

2012-01-01T23:59:59.000Z

20

Nitrate analysis of snow and ice core samples collected in the vicinity of a waste detonation event, McMurdo Station, Antarctica  

Science Conference Proceedings (OSTI)

On December 30, 1991, a small quantity of hazardous materials was detonated at a site near McMurdo Station, Antarctica. The materials involved in the detonation represented highly reactive or explosive wastes that could not be transported safely for disposal in the United States. Detonation was therefore considered the safest and most effective means for disposing these hazardous materials. One concern regarding the detonation of these substances was that the process could generate or distribute measurable quantities of contaminants to the area surrounding the detonation site. Nitrate was selected as a tracer to document the distribution of contaminants from the detonation. Snow and ice cores were collected about 4 months after the event. These cores were analyzed for nitrate concentrations in May 1993, and a map was generated to show the extent of nitrate contamination. This report describes the collection of these samples and summarizes the analytical results.

White, G.J.; Lugar, R.M.; Crockett, A.B.

1994-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Atmospheric variability of methyl chloride during the last 300 years from an Antarctic ice core and firn air  

E-Print Network (OSTI)

as a low-pass filter, smoothing variations in the atmospheric composition of a gas over decadal time scales core measurements from Siple Dome provide evidence for a cyclic natural variability on the order of 10 increase measured in firn air may largely be a result of natural processes, which may continue to affect

Saltzman, Eric

22

3, 435467, 2007 Gas age-ice age  

E-Print Network (OSTI)

in the ice phase (using volcanic horizons) and in the gas phase (using rapid methane variations). We useCPD 3, 435­467, 2007 Gas age-ice age differences along the EPICA cores L. Loulergue et al. Title of the Past New constraints on the gas age-ice age difference along the EPICA ice cores, 0­50 kyr L. Loulergue

Paris-Sud XI, Université de

23

DecadalInterdecadal Climate Variability over Antarctica and Linkages to the Tropics: Analysis of Ice Core, Instrumental, and Tropical Proxy Data  

Science Conference Proceedings (OSTI)

The Antarctic continent contains the majority of the global ice volume and plays an important role in a changing climate. The nature and causes of Antarctic climate variability are, however, poorly understood beyond interannual time scales due to ...

Yuko M. Okumura; David Schneider; Clara Deser; Rob Wilson

2012-11-01T23:59:59.000Z

24

Renewing Modernism  

E-Print Network (OSTI)

buildings. Second, as architects retool for sustainabilitytech- nology. Modern architects and builders were famouslyChallenges Quinn Evans Architects restoration of Wrights

Elefante, Carl

2008-01-01T23:59:59.000Z

25

Relationships between Tropical Cyclone Intensity and Satellite-Based Indicators of Inner Core Convection: 85-GHz Ice-Scattering Signature and Lightning  

Science Conference Proceedings (OSTI)

A key component in the maintenance and intensification of tropical cyclones is the transverse circulation, which transports mass and momentum and provides latent heat release via inner core convective updrafts. This study examines these updrafts ...

Daniel J. Cecil; Edward J. Zipser

1999-01-01T23:59:59.000Z

26

The Initiation of Modern Soft Snowball and Hard Snowball Climates in CCSM3. Part I: The Influences of Solar Luminosity, CO2 Concentration, and the Sea Ice/Snow Albedo Parameterization  

Science Conference Proceedings (OSTI)

The Snowball Earth hypothesis, proposed to explain the Neoproterozoic glacial episodes in the period 750580 million years ago, suggested that the earth was globally covered by ice/snow during these events. This study addresses the problem of ...

Jun Yang; W. Richard Peltier; Yongyun Hu

2012-04-01T23:59:59.000Z

27

A study of carbon-14 of paleoatmospheric methane for the last glacial termination from ancient glacial ice  

E-Print Network (OSTI)

J.P. , 2007. Pleistocene ice and paleo-strain rates atin Greenland snow and ice with 10^-3 to 10^5-year time420,000 years from the Vostok ice core, Antarctica. Nature

Petrenko, Vasilii Victorovich

2008-01-01T23:59:59.000Z

28

CBM modernization  

Science Conference Proceedings (OSTI)

As part of its periodic reviews of the Air Force's intercontinental ballistic missile modernization effort, GAO evaluated the current and planned land-based ICBM force structure. During GAO's review, the Secretary of Defense announced that the 50 Peacekeeper missile force will be moved from the silos at F.E. Warren Air Force Base, Wyoming, to rail garrisons at various Air Force installations. This report discusses how the announcement provides an opportunity for the Air Force to revise its missile launch car acquisition schedule and to consider more fully operational test and evaluation results before deciding to begin initial and full production of the system.

Not Available

1989-12-01T23:59:59.000Z

29

Archimedean Ice  

E-Print Network (OSTI)

The striking boundary dependency (the Arctic Circle phenomenon) exhibited in the ice model on the square lattice extends to other planar set-ups. We present these findings for the triangular and the Kagome lattices. Critical connectivity results guarantee that ice configurations can be generated using the simplest and most efficient local actions. Height functions are utilized throughout the analysis. At the end there is a surprise in store: on the remaining Archimedean lattice for which the ice model can be defined, the 3.4.6.4. lattice, the long range behavior is completely different from the other cases.

Kari Eloranta

2009-09-22T23:59:59.000Z

30

Hydrogen ICE  

NLE Websites -- All DOE Office Websites (Extended Search)

Chevrolet Silverado 1500HD Hydrogen ICE 1 Conversion Vehicle Specifications Engine: 6.0 L V8 Fuel Capacity: 10.5 GGE Nominal Tank Pressure: 5,000 psi Seatbelt Positions: Five...

31

Ice Fishing  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice Fishing Ice Fishing Nature Bulletin No. 327-A January 11, 1969 Forest Preserve District of Cook County Richard B. Ogilvie, President Roland F. Eisenbeis, Supt. of Conservation ICE FISHING We have a peculiar class of people known as the "Frosty-toed Tribe". As soon as winter comes and the ice permits, they put on all the clothes they own and what they can borrow, pack their automobiles with equipment, and start early in the morning for some inland body of water or a bay along one of the Great Lakes. Usually, two or three go together and they may drive 50 or 100 miles. For hours, even in below zero weather, they huddle around holes cut in the ice, fishing patiently, sustained by hope, hot coffee, and a lot of conversation. Some days a man may catch nothing. Other days he may bring home all the law allows. Sometimes he fishes vainly until almost sundown and then begins to haul them in, all of the same kind and size, as fast as he can re-bait his hook. In the meantime, other anglers have rushed over, cut holes, and are fishing all around him -- usually in vain, because one of the strange things about ice fishing is that, although you may catch fish out of one hole, you may get nothing out of another only a few feet from it, using the same kind of bait at the same depth. There are a lot of hotly contested theories but nobody knows why. After watching and questioning scores of ice fishermen, some of them noted for their prowess, we find that although each has his own secret techniques and favorite spots, good catches seem more a matter of luck than skill. Although they are sluggish and don't fight, fish caught in winter have the firmest flesh and finest flavor. The biggest thrill comes from the skillet.

32

Comparative ICE genomics: insights into the evolution of the SXT/R391 family of ICEs  

E-Print Network (OSTI)

Integrating and conjugative elements (ICEs) are one of the three principal types of self-transmissible mobile genetic elements in bacteria. ICEs, like plasmids, transfer via conjugation; but unlike plasmids and similar to many phages, these elements integrate into and replicate along with the host chromosome. Members of the SXT/R391 family of ICEs have been isolated from several species of gram-negative bacteria, including Vibrio cholerae, the cause of cholera, where they have been important vectors for disseminating genes conferring resistance to antibiotics. Here we developed a plasmid-based system to capture and isolate SXT/R391 ICEs for sequencing. Comparative analyses of the genomes of 13 SXT/R391 ICEs derived from diverse hosts and locations revealed that they contain 52 perfectly syntenic and nearly identical core genes that serve as a scaffold capable of mobilizing an array of variable DNA. Furthermore, selection pressure to maintain ICE mobility appears to have restricted insertions of variable DNA into intergenic sites that do not interrupt core functions. The variable genes confer diverse element-specific phenotypes, such as resistance to antibiotics. Functional analysis of a set of deletion mutants revealed that less than half of the conserved core genes are required for ICE mobility; the functions of most of the dispensable core genes are unknown. Several lines of evidence suggest that there has been extensive recombination between SXT/R391 ICEs, resulting in re-assortment of their respective variable gene content. Furthermore,

Rachel A. F. Wozniak; Derrick E. Fouts; Matteo Spagnoletti; Mauro M. Colombo

2009-01-01T23:59:59.000Z

33

Greenland Ice Sheet Mass Balance Reconstruction. Part II: Surface Mass Balance (18402010)  

Science Conference Proceedings (OSTI)

Meteorological station records, ice cores, and regional climate model output are combined to develop a continuous 171-yr (18402010) reconstruction of Greenland ice sheet climatic surface mass balance (Bclim) and its subcomponents including near-...

Jason E. Box

2013-09-01T23:59:59.000Z

34

Greenland ice sheet mass balance reconstruction. Part II: surface mass balance (1840-2010)  

Science Conference Proceedings (OSTI)

Meteorological station records, ice cores, and regional climate model output are combined to develop a continuous 171-year (1840-2010) reconstruction of Greenland ice sheet climatic surface mass balance (Bclim) and its sub-components including ...

Jason E. Box

35

Ice Storm Database and Ice Severity Maps  

Science Conference Proceedings (OSTI)

Historical icing information has several valuable uses in overhead transmission line ice loading design and research. Previously, this type of information was neither readily available nor easily acquired. This report describes the creation of an electronic ice storm database and regional ice severity maps for the United States.

1996-12-17T23:59:59.000Z

36

Glossary Term - Dry Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Deuteron Previous Term (Deuteron) Glossary Main Index Next Term (Electron) Electron Dry Ice A block of dry ice sublimating on a table. Dry ice is the solid form of carbon dioxide...

37

Observed and Modeled Greenland Ice Sheet Snow Accumulation, 19582003, and Links with Regional Climate Forcing  

Science Conference Proceedings (OSTI)

Annual and monthly snow accumulation for the Greenland Ice Sheet was derived from ECMWF forecasts [mainly 40-yr ECMWR Re-Analysis (ERA-40)] and further meteorological modeling. Modeled accumulation was validated using 58 ice core accumulation ...

Edward Hanna; Joe McConnell; Sarah Das; John Cappelen; Ag Stephens

2006-02-01T23:59:59.000Z

38

Atmospheric neutrino oscillations and tau neutrinos in ice  

E-Print Network (OSTI)

The main goal of the IceCube Deep Core Array is to search for neutrinos of astrophysical origins. Atmospheric neutrinos are commonly considered as a background for these searches. We show here that cascade measurements in the Ice Cube Deep Core Array can provide strong evidence for tau neutrino appearance in atmospheric neutrino oscillations. A careful study of these tau neutrinos is crucial, since they constitute an irreducible background for astrophysical neutrino detection.

Gerardo Giordano; Olga Mena; Irina Mocioiu

2010-04-20T23:59:59.000Z

39

Arctic ice islands  

SciTech Connect

The development of offshore oil and gas resources in the Arctic waters of Alaska requires offshore structures which successfully resist the lateral forces due to moving, drifting ice. Ice islands are floating, a tabular icebergs, up to 60 meters thick, of solid ice throughout their thickness. The ice islands are thus regarded as the strongest ice features in the Arctic; fixed offshore structures which can directly withstand the impact of ice islands are possible but in some locations may be so expensive as to make oilfield development uneconomic. The resolution of the ice island problem requires two research steps: (1) calculation of the probability of interaction between an ice island and an offshore structure in a given region; and (2) if the probability if sufficiently large, then the study of possible interactions between ice island and structure, to discover mitigative measures to deal with the moving ice island. The ice island research conducted during the 1983-1988 interval, which is summarized in this report, was concerned with the first step. Monte Carlo simulations of ice island generation and movement suggest that ice island lifetimes range from 0 to 70 years, and that 85% of the lifetimes are less then 35 years. The simulation shows a mean value of 18 ice islands present at any time in the Arctic Ocean, with a 90% probability of less than 30 ice islands. At this time, approximately 34 ice islands are known, from observations, to exist in the Arctic Ocean, not including the 10-meter thick class of ice islands. Return interval plots from the simulation show that coastal zones of the Beaufort and Chukchi Seas, already leased for oil development, have ice island recurrences of 10 to 100 years. This implies that the ice island hazard must be considered thoroughly, and appropriate safety measures adopted, when offshore oil production plans are formulated for the Alaskan Arctic offshore. 132 refs., 161 figs., 17 tabs.

Sackinger, W.M.; Jeffries, M.O.; Lu, M.C.; Li, F.C.

1988-01-01T23:59:59.000Z

40

IT Modernization Strategy  

Energy.gov (U.S. Department of Energy (DOE))

This white paper frames a Department of Energy (DOE) strategy for modernizing our Federal information technology (IT) as one of the foundations for management and operational excellence. It...

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

ARM - Measurement - Ice nuclei  

NLE Websites -- All DOE Office Websites (Extended Search)

to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Ice nuclei Small particles around which ice particles form. Categories Cloud Properties...

42

Anemometry in Icing Conditions  

Science Conference Proceedings (OSTI)

The accuracy of wind measurements in icing conditions is discussed, and wind tunnel calibrations as well as field comparisons are presented for three heated anemometers that use different measuring principles. It is pointed out that ice-free ...

Lasse Makkonen; Pertti Lehtonen; Lauri Helle

2001-09-01T23:59:59.000Z

43

Aging of Accreted Ice  

Science Conference Proceedings (OSTI)

The effect of annealing in accreted ice has been investigated for artificially grown ice deposits after 100 days of storage in a deep freeze unit. Cross sections of the cylindrical deposits have been cut and replicated soon after growth and ...

F. Prodi; L. Levi

1980-06-01T23:59:59.000Z

44

Ice electrode electrolytic cell  

DOE Patents (OSTI)

This invention relates to a method and apparatus for removing heavy metals from waste water, soils, or process streams by electrolytic cell means. The method includes cooling a cell cathode to form an ice layer over the cathode and then applying an electric current to deposit a layer of the heavy metal over the ice. The metal is then easily removed after melting the ice. In a second embodiment, the same ice-covered electrode can be employed to form powdered metals.

Glenn, D.F.; Suciu, D.F.; Harris, T.L.; Ingram, J.C.

1992-12-31T23:59:59.000Z

45

Ice electrode electrolytic cell  

DOE Patents (OSTI)

This invention relates to a method and apparatus for removing heavy metals from waste water, soils, or process streams by electrolytic cell means. The method includes cooling a cell cathode to form an ice layer over the cathode and then applying an electric current to deposit a layer of the heavy metal over the ice. The metal is then easily removed after melting the ice. In a second embodiment, the same ice-covered electrode can be employed to form powdered metals.

Glenn, David F. (Idaho Falls, ID); Suciu, Dan F. (Idaho Falls, ID); Harris, Taryl L. (Idaho Falls, ID); Ingram, Jani C. (Idaho Falls, ID)

1993-01-01T23:59:59.000Z

46

Ice electrode electrolytic cell  

DOE Patents (OSTI)

This invention relates to a method and apparatus for removing heavy metals from waste water, soils, or process streams by electrolytic cell means. The method includes cooling a cell cathode to form an ice layer over the cathode and then applying an electric current to deposit a layer of the heavy metal over the ice. The metal is then easily removed after melting the ice. In a second embodiment, the same ice-covered electrode can be employed to form powdered metals.

Glenn, D.F.; Suciu, D.F.; Harris, T.L.; Ingram, J.C.

1993-04-06T23:59:59.000Z

47

Stability of ferroelectric ice  

E-Print Network (OSTI)

We theoretically study the stability conditions of the ferroelectric ice of the Cmc21 structure, which has been considered, for decades, one of the most promising candidates of the low temperature proton-ordered phase of pure ice Ih. It turned out that the Cmc21 structure is stable only with a certain amount of dopant and the true proton-ordered phase of pure ice Ih remains to be found at lower temperature. Implication for spin ice is mentioned.

Iitaka, Toshiaki

2010-01-01T23:59:59.000Z

48

A Wind Tunnel and Theoretical Study of the Melting Behavior of Atmospheric Ice Particles. II: A Theoretical Study for Frozen Drops of Radius < 500 ?m  

Science Conference Proceedings (OSTI)

The internal and external heat transfer of a melting spherical ice particles less than 500 ?m radius has been investigated theoretically. The effect of an internal circulation and eccentric location of the ice core was modeled. These two effects ...

R. M. Rasmussen; V. Levizzani; H. R. Pruppacher

1984-02-01T23:59:59.000Z

49

Core Specialization  

NLE Websites -- All DOE Office Websites (Extended Search)

Core Core Specialization Core Specialization Core Specialization (CS) is a feature of the Cray operating system that allows the user to reserve one or more cores per node for handling system services, and thus reduce the effects of timing jitter due to interruptions from the operating system at the expense of (possibly) requiring more nodes to run an application. The specialized cores may also be used in conjunction with Cray's MPI asynchronous progress engine [1] to improve the overlap of communication and computation for applications that use non-blocking MPI functions. In the absence of CS, the compute cores must service their own non-blocking calls. Hyper-Threading complicates questions abouty the most effective use of processor resources. HT doubles the number of compute stream (i.e.

50

Core Specialization  

NLE Websites -- All DOE Office Websites (Extended Search)

Core Specialization Core Specialization Core Specialization Core Specialization (CS) is a feature of the Cray operating system that allows the user to reserve one or more cores per node for handling system services, and thus reduce the effects of timing jitter due to interruptions from the operating system at the expense of (possibly) requiring more nodes to run an application. The specialized cores may also be used in conjunction with Cray's MPI asynchronous progress engine [1] to improve the overlap of communication and computation for applications that use non-blocking MPI functions. In the absence of CS, the compute cores must service their own non-blocking calls. Hyper-Threading complicates questions abouty the most effective use of processor resources. HT doubles the number of compute stream (i.e.

51

Topics in Modern Physics Sampler  

NLE Websites -- All DOE Office Websites (Extended Search)

Topics in Modern Physics Teacher Resource Book Sampler Ed Home - Sampler Index Download the revised Topics in Modern Physics Teacher Resource Book. This volume contains some but...

52

Liquid Nitrogen Ice Cream  

NLE Websites -- All DOE Office Websites (Extended Search)

Liquid Nitrogen Ice Cream If you have access to liquid nitrogen and the proper safety equipment and training, try this in place of your normal cryogenics demonstration Download...

53

An ice lithography instrument  

SciTech Connect

We describe the design of an instrument that can fully implement a new nanopatterning method called ice lithography, where ice is used as the resist. Water vapor is introduced into a scanning electron microscope (SEM) vacuum chamber above a sample cooled down to 110 K. The vapor condenses, covering the sample with an amorphous layer of ice. To form a lift-off mask, ice is removed by the SEM electron beam (e-beam) guided by an e-beam lithography system. Without breaking vacuum, the sample with the ice mask is then transferred into a metal deposition chamber where metals are deposited by sputtering. The cold sample is then unloaded from the vacuum system and immersed in isopropanol at room temperature. As the ice melts, metal deposited on the ice disperses while the metals deposited on the sample where the ice had been removed by the e-beam remains. The instrument combines a high beam-current thermal field emission SEM fitted with an e-beam lithography system, cryogenic systems, and a high vacuum metal deposition system in a design that optimizes ice lithography for high throughput nanodevice fabrication. The nanoscale capability of the instrument is demonstrated with the fabrication of nanoscale metal lines.

Han, Anpan [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States); Chervinsky, John [School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States); Branton, Daniel [Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138 (United States); Golovchenko, J. A. [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States); School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)

2011-06-15T23:59:59.000Z

54

Transporting Dry Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Requirements for Shipping Dry Ice IATA PI 904 Source: Reg of the Day from ERCweb 2006 Environmental Resource Center | 919-469-1585 | webmaster@ercweb.com http:...

55

Mobile Ice Nucleus Spectrometer  

SciTech Connect

This first year report presents results from a computational fluid dynamics (CFD) study to assess the flow and temperature profiles within the mobile ice nucleus spectrometer.

Kulkarni, Gourihar R.; Kok, G. L.

2012-05-07T23:59:59.000Z

56

Skin supersolidity slipperizing ice  

E-Print Network (OSTI)

Consistency between theory predictions and measurements and calculations revealed that the skin of ice, containing water molecules with fewer than four neighbours, forms a supersolid phase that is highly polarized, elastic, hydrophobic, with ultra-low density and high thermal stability. The supersolidity of skin sliperizes ice.

Xi Zhang; Yongli Huang; a Zengsheng Ma; Yichun Zhou; Chang Q Sun

2013-10-03T23:59:59.000Z

57

Reionization on ice  

E-Print Network (OSTI)

The case for substantial far infrared ice emission in local ultraluminous infrared galaxies, expected based on the presence of mid-infrared ice absorption in their spectra and the known far infrared optical properties of ice, is still largely unsupported by direct observation owing to insufficient far infrared spectral coverage. Some marginal supportive evidence is presented here. A clear consequence of far infrared ice emission is the need to extend the range of redshifts considered for submillimeter sources. This is demonstrated via the example of HDF 850.1. The solid phase of the ISM during reionization may be dominated by ice, and this could lead to the presence of reionization sources in submillimeter source catalogs. Submillimeter sources not detected at 24 micron in the GOODS-N field are examined. Two candidate reionization sources are identified at 3.6 micron through possible Gunn-Peterson saturation in the Z band.

C. C. Dudley; M. Imanishi; P. R. Maloney

2006-02-15T23:59:59.000Z

58

Modern supernova search  

Science Conference Proceedings (OSTI)

Supernovae play a critical role in observational cosmology as well as in astrophysics of stars and galaxies. Recent era has seen dramatic progress in the research of supernovae. Several programs to search systematically supernovae in nearby to distant galaxies have been very successful. Recent progresses in the modern supernova search are reviewed.

Myung Gyoon Lee

2001-01-01T23:59:59.000Z

59

Ice Cream with a Heart Create a new Clemson Ice  

E-Print Network (OSTI)

Ice Cream with a Heart Contest! Create a new Clemson Ice Cream flavor! Raise money for your favorite charity! Win a free Clemson Ice Cream party for your organization! Enter at www organizations. The contest is called Ice Cream with a Heart and its purpose is to help student organizations

Bolding, M. Chad

60

Greenland Ice Sheet Mass Balance Reconstruction. Part I: Net Snow Accumulation (16002009)  

Science Conference Proceedings (OSTI)

Ice core data are combined with Regional Atmospheric Climate Model version 2 (RACMO2) output (19582010) to develop a reconstruction of Greenland ice sheet net snow accumulation rate, t(G), spanning the years 16002009. Regression parameters from ...

Jason E. Box; Noel Cressie; David H. Bromwich; Ji-Hoon Jung; Michiel van den Broeke; J. H. van Angelen; Richard R. Forster; Clement Mige; Ellen Mosley-Thompson; Bo Vinther; Joseph R. McConnell

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Fish Smother Under Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Smother Under Ice Smother Under Ice A BULLETIN FOR THE CHICAGO PUBLIC SCHOOLS DESIGNED FOR INCLUSION IN THE WEEKLY ANNOUNCEMENT SENT OUT FROM THE OFFICE OF SUPT. WILLIAM H. JOHNSON Clayton F. Smith, President Roberts Mann, Superintendent of Conservation February 1, 1945 Nature Bulletin No. 1 FOREST PRESERVE NOTES Grown-ups, who used to kive on a farm or in a small town, are fond of talking about the old-fashioned winters "when I was a boy" and the winters that grandpa used to tell about. Well, one would have to go back a long, long time to find a winter as severe as this one. FISH SMOTHER UNDER ICE Lakes and streams breathe the same as living things. When they are covered with ice and snow they cannot get air and they much hold their breath until the ice thaws. While they are holding their breath the oxygen in the water is gradually used up by the living things sealed up in it -- fish, plants "bugs", snails, and hosts of microscopic life. If the ice lasts long enough, these living things die one after another as each kind reaches the point where it cannot stand any further oxygen starvation. Sometimes temporary relief is given by rains and melting snow that bring fresh, serated water under the ice, but no method of artificial respiration has been found that works. Sometimes, too, when water plants get enough sunlight through clear ice they produce small amounts of oxygen and delay the suffocation of the fish, etc.; but when snow and cloudy ice cuts off the light this does not happen.

62

Arctic Sea ice model sensitivities.  

SciTech Connect

Arctic sea ice is an important component of the global climate system and, due to feedback effects, the Arctic ice cover is changing rapidly. Predictive mathematical models are of paramount importance for accurate estimates of the future ice trajectory. However, the sea ice components of Global Climate Models (GCMs) vary significantly in their prediction of the future state of Arctic sea ice and have generally underestimated the rate of decline in minimum sea ice extent seen over the past thirty years. One of the contributing factors to this variability is the sensitivity of the sea ice state to internal model parameters. A new sea ice model that holds some promise for improving sea ice predictions incorporates an anisotropic elastic-decohesive rheology and dynamics solved using the material-point method (MPM), which combines Lagrangian particles for advection with a background grid for gradient computations. We evaluate the variability of this MPM sea ice code and compare it with the Los Alamos National Laboratory CICE code for a single year simulation of the Arctic basin using consistent ocean and atmospheric forcing. Sensitivities of ice volume, ice area, ice extent, root mean square (RMS) ice speed, central Arctic ice thickness,and central Arctic ice speed with respect to ten different dynamic and thermodynamic parameters are evaluated both individually and in combination using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA). We find similar responses for the two codes and some interesting seasonal variability in the strength of the parameters on the solution.

Peterson, Kara J.; Bochev, Pavel Blagoveston; Paskaleva, Biliana Stefanova

2010-12-01T23:59:59.000Z

63

Turbine Overspeed Trip Modernization  

Science Conference Proceedings (OSTI)

This report provides guidance for power plant engineers contemplating modernization of their main turbine overspeed trip systems. When a large power plant turbine suddenly loses its output shaft loading due to a generator or power grid problem, the steam flow driving the turbine must be cut off very quickly to prevent an overspeed event. The overspeed trip system protects personnel and plant systems by preventing missiles that can result when turbines disintegrate at higher than normal rotational speeds....

2006-12-04T23:59:59.000Z

64

Vortex ice in nanostructured superconductors  

SciTech Connect

We demonstrate using numerical simulations of nanostructured superconductors that it is possible to realize vortex ice states that are analogous to square and kagome ice. The system can be brought into a state that obeys either global or local ice rules by applying an external current according to an annealing protocol. We explore the breakdown of the ice rules due to disorder in the nanostructure array and show that in square ice, topological defects appear along grain boundaries, while in kagome ice, individual defects appear. We argue that the vortex system offers significant advantages over other artificial ice systems.

Reichhardt, Charles [Los Alamos National Laboratory; Reichhardt, Cynthia J [Los Alamos National Laboratory; Libal, Andras J [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

65

Prediction of Vessel Icing  

Science Conference Proceedings (OSTI)

Vessel icing from wave-generated spray is a severe hazard to expanded marine operations in high latitudes. Hardships in making observations during operations, combined with differences in vessel type and heading, have resulted in great ...

J. E. Overland; C. H. Pease; R. W. Preisendorfer; A. L. Comiskey

1986-12-01T23:59:59.000Z

66

Global Warming, Soot, Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Global Warming, Soot, Ice Speaker(s): James Hansen Date: November 7, 2003 - 12:00pm Location: 90-3122 Irreversible "dangerous anthropogenic interference" with the climate system...

67

Sublimation of Ice Crystals  

Science Conference Proceedings (OSTI)

Recent experiments on the sublimation of single crystals of ice in an atmosphere of air indicate that the sublimation rate is diffusion limited and initially solid prismatic crystals evolve into time-independent shapes similar to confocal ...

Jon Nelson

1998-03-01T23:59:59.000Z

68

Global ice sheet modeling  

Science Conference Proceedings (OSTI)

The University of Maine conducted this study for Pacific Northwest Laboratory (PNL) as part of a global climate modeling task for site characterization of the potential nuclear waste respository site at Yucca Mountain, NV. The purpose of the study was to develop a global ice sheet dynamics model that will forecast the three-dimensional configuration of global ice sheets for specific climate change scenarios. The objective of the third (final) year of the work was to produce ice sheet data for glaciation scenarios covering the next 100,000 years. This was accomplished using both the map-plane and flowband solutions of our time-dependent, finite-element gridpoint model. The theory and equations used to develop the ice sheet models are presented. Three future scenarios were simulated by the model and results are discussed.

Hughes, T.J.; Fastook, J.L. [Univ. of Maine, Orono, ME (United States). Institute for Quaternary Studies

1994-05-01T23:59:59.000Z

69

DIFFRACTION STUDIES OF ICE Alexe BOSAK  

E-Print Network (OSTI)

as ice-nine [K. Vonnegut, Cat's Cradle] #12;Phase diagram of water #12;Phase diagram of water Here we areDIFFRACTION STUDIES OF ICE Alexeï BOSAK European Synchrotron Radiation Facility #12;Ice as the mild threat ice Ih the only ice in the crust #12;Ice as the absolute weapon Ice IX : melting point 45.8°C

Titov, Anatoly

70

Contractor SOW Template - ICE | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SOW Template - ICE Contractor SOW Template - ICE Contractor SOW Template - ICE.pdf More Documents & Publications Contractor SOW Template - ICR Statement of Work (SOW) Template...

71

Image Gallery from the AMANDA Experiment, the Predecessor of IceCube at the South Pole  

DOE Data Explorer (OSTI)

IceCube is a neutrino observatory for astrophysics, with parts buried below the surface of the ice at the South Pole and an air-shower detector array exposed above. Its predecessor detector and experiment, AMANDA, pioneered neutrino detection in ice. This image gallery is maintained at the University of Wisconsin. Also provided are links to related galleries concerning construction of optical modules, ice coring and drilling, and the U.S. Antarctic Program Photo Library. See also the library of videos, computer animations, and audio files

Abbasi, R. et al

72

IT Modernization Strategy | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

IT Modernization Strategy IT Modernization Strategy This white paper frames a Department of Energy (DOE) strategy for modernizing our Federal information technology (IT) as one of...

73

Modern generator protection systems  

SciTech Connect

The special problems of the protection of generating stations with large machines connected to large integrated networks are presented. The coordination between the protective relays and tripping functions and the reliability of the protection scheme are important considerations in modern plants. Primary and backup protective functions, the applications, and their divisions into fault detection and ''fault prevention'' categories are considered. Testing and maintenance of the generator protection system including automatic calibration testing equipment is also discussed. The concept of the generator protection as a completely coordinated system and its realization with solid state protective relays is also presented. 9 refs.

Pencinger, C.J.

1981-01-01T23:59:59.000Z

74

Ice cream headache  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice cream headache Ice cream headache Name: fath Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: What causes an "ice cream headache"? Are they dangerous? What would happen if I induced an ice cream headache when I had a regular headache? Replies: This is really a neat question. I am certainly no expert on headaches, but it has a lot to do blood circulation in the sinuses and around and within the brain. Why do some people get them easily and other seem resistant? The cold might restrict blood flow which is the basis for the problem. An Ice cream headache can be turned "on" or "off" by adjusting the rate of consumption, Slurpees work best, so really cold stuff enhances the effect. Are there stages: cold sensation, lingering headache, subsiding headache, warming, etc? Does the cold actually create similar headache "conditions" or does the brain confused cause it cannot directly feel pain? The difference in people is probably due to differences in arteriole branching and general circulation. In my experience smokers get worse headaches than nonsmokers of the same age. Do you find a similar trend? I am trying to stimulate discussion!

75

Recent Great Lakes Ice Trends  

Science Conference Proceedings (OSTI)

Analysis of ice observations made by cooperative observers from shoreline stations reveals significant changes in the ice season on the North American Great Lakes over the past 35years. Although the dataset is highly inhomogeneous and year-to-...

Howard P. Hanson; Claire S. Hanson; Brenda H. Yoo

1992-05-01T23:59:59.000Z

76

ARM - Measurement - Ice water content  

NLE Websites -- All DOE Office Websites (Extended Search)

to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Ice water content The concentration (massvol) of ice water particles in a cloud....

77

Ice maker safety control  

Science Conference Proceedings (OSTI)

In a refrigeration apparatus including an evaporator, a defrost heater for defrosting the evaporator, a defrost thermostat having a switch for de-energizing the defrost heater at a preselected high temperature of the evaporator, and an ice making apparatus having a mold, a mold heater, and a control circuit controllably energized the mold heater, a safety control for the ice making apparatus is described comprising: means for thermally coupling the defrost thermostat with the mold; and means electrically connecting the defrost thermostat switch with the control circuit for de-energizing the mold heater at a preselected high temperature of the mold to prevent overheating thereof.

Linstromberg, W.J.

1988-05-03T23:59:59.000Z

78

Dry Ice vs. Pipette Experiment Description  

E-Print Network (OSTI)

Dry Ice vs. Pipette Experiment Description Dry ice (solid) is put into the bulb of a pipette, plastic pipette 1 ice cube sized piece of dry ice Butter knife (or some object to break dry ice) Gloves (surgical gloves will not work, they must protect hands from dry ice) Safety glasses for demonstrator

79

Why sequence modern freshwater microbialites?  

NLE Websites -- All DOE Office Websites (Extended Search)

Breitbart Principal Investigators: Mya Breitbart, University of South Florida Program: CSP 2010 Home > Sequencing >Why sequence modern freshwater microbialites? UC logo DOE logo...

80

IceIce Collisions: An Ice Multiplication Process in Atmospheric Clouds  

Science Conference Proceedings (OSTI)

Ice in atmospheric clouds undergoes complex physical processes, interacting especially with radiation, which leads to serious impacts on global climate. After their primary production, atmospheric ice crystals multiply extensively by secondary ...

J.-I. Yano; V. T. J. Phillips

2011-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Subsurface Ice and Brine Sampling Using an Ultrasonic/Sonic Gopher for Life Detection and Characterization  

E-Print Network (OSTI)

There is growing evidence for ice and fluids near the surface of Mars with potential discharge of brines, which may preserve a record of past life on the planet. Proven techniques to sample Mars subsurface will be critical for future NASA astrobiology missions that will search for such records. The required technology studies are underway in the McMurdo Dry valleys, Antarctica, which is serving as a Mars analog. The ice layer on Lake Vida in the dry valleys is estimated to be 20-meter thick where below 16-m depth there is a mix of ice and brine, which has never been sampled directly due to logistical constraints. A novel light weight, low power ultrasonic/sonic driller/corer (USDC) mechanism was developed that overcomes the need for high axial loads required by drilling via conventional techniques. The USDC was modified to produce an Ultrasonic/Sonic Gopher that is being developed to core down to the 20-m depth for in situ analysis and sample collection. Coring ice at-20 o C as in Lake Vida suggests that it is a greater challenge and current efforts are focused on the problems of ice core cutting, ice chip handling and potential ice melt (and refreezing) during drilling. An analytical model and a prototype are being developed with an effort to

Y. Bar-cohen; S. Sherrit; Z. Chang; L. Wessel; X. Bao; P. T. Doran; C. H. Fritsen; F. Kenig; C. P. Mckay; A. Murray; T. Peterson

2004-01-01T23:59:59.000Z

82

Modern Methods for Lipid Analysis...  

Science Conference Proceedings (OSTI)

Modern Methods describes previous work that helped established the foundation of the field, while also demonstrating new data that is quickly defining a new level of state-of-the-art. Modern Methods for Lipid Analysis... Methods and Analyses Hardback B

83

Hail ice impact on composite structures at glancing angles  

E-Print Network (OSTI)

investigation of high velocity ice impacts on woven carbon/and ice sphere. .by trailing ice fragments. ..

Funai, Sho

2012-01-01T23:59:59.000Z

84

Fluid Migration During Ice/Rock Planetesimal Differentiation  

E-Print Network (OSTI)

Much speculation on extraterrestrial life has focused on finding environments where water is present. Heating of smaller icy bodies may create and sustain a possible liquid layer below the surface. If liquid water was sustained for geologically significant times (> 108 years) within the ubiquitous small bodies in the outer solar system, the opportunities for development of simple life are much greater. The lifetime of the liquid water layer will depend on several factors, including the rate of rock/water reaction, which will depend on the rate at which water can be segregated from a melting ice/rock core. For the liquid water phase to migrate toward the surface, the denser rock phase must compact. The primary question that this thesis will answer is how fast melt water can segregate from the core of an ice-rich planetesimal. To answer this question we treat the core as two phase flow problem: a compacting viscous solid (ice/rock mixture) and a segregating liquid (melt water). The model developed here is based on the approach derived to study a different partially molten solid: in the viscously deforming partially molten upper mantle. We model a planetesimal core that initially a uniform equal mixture of solid ice and rock. We assume chondritic levels of radiogenic heating as the only heat source, and numerically solve for the evolution of solid and melt velocities and the distribution of melt fraction (porosity) during the first few million years after accretion. From a suite of numerical models, we have determined that the meltwater is segregated out of the core as fast as it is created, except in the case of very fast melting times (0.75 My vs. 0.62 My), and small ore radius (~25 to 150 km, depending on the viscosity of the ice/rock mixture in the solid core). In these latter cases, segregation is slower than migration and a high water fraction develops in the core. Heat released by water-rock reactions (not included in this model) will tend to drive up melting rates in all cases, which may favor this latter endmember.

Raney, Robert 1987-

2012-12-01T23:59:59.000Z

85

Image Content Engine (ICE)  

SciTech Connect

The Image Content Engine (ICE) is being developed to provide cueing assistance to human image analysts faced with increasingly large and intractable amounts of image data. The ICE architecture includes user configurable feature extraction pipelines which produce intermediate feature vector and match surface files which can then be accessed by interactive relational queries. Application of the feature extraction algorithms to large collections of images may be extremely time consuming and is launched as a batch job on a Linux cluster. The query interface accesses only the intermediate files and returns candidate hits nearly instantaneously. Queries may be posed for individual objects or collections. The query interface prompts the user for feedback, and applies relevance feedback algorithms to revise the feature vector weighting and focus on relevant search results. Examples of feature extraction and both model-based and search-by-example queries are presented.

Brase, J M

2007-03-26T23:59:59.000Z

86

Ice slurry cooling research: Storage tank ice agglomeration and extraction  

DOE Green Energy (OSTI)

A new facility has been built to conduct research and development on important issues related to implementing ice slurry cooling technology. Ongoing studies are generating important information on the factors that influence ice particle agglomeration in ice slurry storage tanks. The studies are also addressing the development of methods to minimize and monitor agglomeration and improve the efficiency and controllability of tank extraction of slurry for distribution to cooling loads. These engineering issues impede the utilization of the ice slurry cooling concept that has been under development by various groups.

Kasza, K. [Argonne National Lab., IL (United States); Hayashi, Kanetoshi [NKK Corp., Kawasaki (Japan)

1999-08-01T23:59:59.000Z

87

Technology in an Alternative Modernity.  

E-Print Network (OSTI)

??This essay tries to defend a general embracing-controlling-stance on modern technology on the basis of the analysis of technology and a synthesized theory about the (more)

Lu, Yanfeng

2013-01-01T23:59:59.000Z

88

Climate Impacts of Ice Nucleation  

SciTech Connect

Several different ice nucleation parameterizations in two different General Circulation Models are used to understand the effects of ice nucleation on the mean climate state, and the climate effect of aerosol perturbations to ice clouds. The simulations have different ice microphysical states that are consistent with the spread of observations. These different states occur from different parameterizations of the ice cloud nucleation processes, and feature different balances of homogeneous and heterogeneous nucleation. At reasonable efficiencies, consistent with laboratory measurements and constrained by the global radiative balance, black carbon has a small (-0.06 Wm?2) and not statistically significant climate effect. Indirect effects of anthropogenic aerosols on cirrus clouds occur mostly due to increases in homogeneous nucleation fraction as a consequence of anthropogenic sulfur emissions. The resulting ice indirect effects do not seem strongly dependent on the ice micro-physical balance, but are slightly larger for those states with less homogeneous nucleation in the base state. The total ice AIE is estimated at 0.260.09 Wm?2 (1? uncertainty). This represents an offset of 20-30% of the simulated total Aerosol Indirect Effect for ice and liquid clouds.

Gettelman, A.; Liu, Xiaohong; Barahona, Donifan; Lohmann, U.; Chen, Chih-Chieh

2012-10-19T23:59:59.000Z

89

Backhand tecniques in ice hockey.  

E-Print Network (OSTI)

??The main objective of this project based multimedia thesis is to show video material of how to use a backhand side of the ice hockey (more)

Luoma, Matti

2012-01-01T23:59:59.000Z

90

Modernization Project Office, Facilities & Operations Directorate...  

NLE Websites -- All DOE Office Websites (Extended Search)

Welcome to the... Modernization Project Office The Modernization Project Office (MPO) is responsible for engineering, design, cost estimating, scheduling, and project controls,...

91

Modeling of Ice Accretion on Wires  

Science Conference Proceedings (OSTI)

A time-dependent numerical model of ice accretion on wires, such as overhead conductors, is presented. Simulations of atmospheric icing are made with the model in order to examine the dependence of the accreted ice amount on atmospheric ...

Lasse Makkonen

1984-06-01T23:59:59.000Z

92

ICE Raids: Compounding Production, Contradiction, and Capitalism  

E-Print Network (OSTI)

is just a cheap way of boosting ICE criminal alien arrestRegardless of whether or not ICE is motivated by maintainingWorkers in America: Factories and ICE Raids Produce Citizens

Reas, Elizabeth I

2009-01-01T23:59:59.000Z

93

Climate, Ocean and Sea Ice Modeling  

NLE Websites -- All DOE Office Websites (Extended Search)

Climate, Ocean and Sea Ice Modeling (COSIM) Summary The COSIM project develops advanced ocean and ice models for evaluating the role of ocean and ice in high-latitude climate...

94

Virtual Floe Ice Drift Forecast Model Intercomparison  

Science Conference Proceedings (OSTI)

Both sea ice forecast models and methods to measure their skill are needed for operational sea ice forecasting. Two simple sea ice models are described and tested here. Four different measures of skill are also tested. The forecasts from the ...

Robert W. Grumbine

1998-09-01T23:59:59.000Z

95

Network technology for depot modernization  

Science Conference Proceedings (OSTI)

This report was prepared by the Pacific Northwest Laboratory to summarize existing and emerging information system technology and standards applicable to Depot System Command (DESCOM) modernization efforts. The intent of this summarization is to provide the Revitalization of Army Depots for the Year 2000 (READY 2000) team a clear understanding of the enabling information system technologies required to support effective modernization activities. Much of the information contained in this report was acquired during the last year in support of the US Army Armament, Munitions, and Chemical Command (AMCCOM) Facility Integrated Manufacturing Management System (FIMMS) project at PNL, which is targeting the modernization of plant-wide information systems at Army Ammunition Plants. The objective of information system modernization is to improve the effectiveness of an organization in performing its mission. Information system modernization strives to meet this objective by creating an environment where data is electronically captured near the source and readily available to all areas of the organization. Advanced networks, together with related information system technology, are the enabling mechanisms that make modern information system infrastructures possible. The intent of this paper is to present an overview of advanced information system network technology to support depot modernization planners in making technology management decisions. Existing and emerging Open System Interconnection (OSI) and Government Open System Interconnection Profile (GOSIP) standards are explained, as well as a brief assessment of existing products compliant with these standards. Finally, recommendations for achieving plant-wide integration using existing products are presented, and migration strategies for full OSI compliance are introduced. 5 refs., 16 figs. (JF)

Hostick, C.J.

1990-12-01T23:59:59.000Z

96

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

PSC Missouri - Utility Meeting PSC Missouri - Utility Meeting Joe Miller, Steve Pullins - Modern Grid Team January 9, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability 2 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y Agenda Topics What is the Modern Grid Strategy? What is the Modern Grid? Why do we need to modernize the grid? What are some of the benefits? How do we achieve a Modern Grid? What are some of the metrics? What are others doing to modernize? MODERN GRID S T R A T E G Y What is the Modern Grid Strategy? 4 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y The Modern Grid Strategy (MGS)

97

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Modern Grid Modern Grid Wisconsin Public Utility Institute and UW Energy Institute Joe Miller, Steve Pullins, Steve Bossart - Modern Grid Team April 29, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability 2 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y Today's Objectives To share our views on several Modern Grid concepts: What is the Modern Grid Strategy? What is the Modern (Smart) Grid? Why do we need to modernize? What are some of the benefits? What are some of the barriers? How do we achieve a Modern Grid? MODERN GRID S T R A T E G Y What is the Modern Grid Strategy? 4 Office of Electricity Delivery and Energy

98

Theory of amorphous ices  

E-Print Network (OSTI)

We use large-deviation theory to study nonequilibrium transitions between amorphous solids and liquid in an atomistic model of supercooled water. Along with nonequilibrium transitions between the ergodic liquid and two distinct amorphous solids, we establish coexistence between the two amorphous solids, a finding that is consistent with experiment. The phase diagram we predict includes a nonequilibrium triple point where the two amorphous phases and the liquid coexist. While the amorphous solids are long-lived and slowly-aging glasses, their melting leads quickly to the formation of ice. This irreversible behavior is demonstrated in our theoretical treatment and compared with experiment.

David T Limmer; David Chandler

2013-06-20T23:59:59.000Z

99

BISICLES Captures Details of Retreating Antarctic Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

BISICLES Captures Details of Retreating Antarctic Ice BISICLES Captures Details of Retreating Antarctic Ice March 30, 2013 | Tags: Climate Research, Hopper, Math & Computer Science...

100

Biogeochemistry in Sea Ice: CICE model developments  

SciTech Connect

Polar primary production unfolds in a dynamic sea ice environment, and the interactions of sea ice with ocean support and mediate this production. In spring, for example, fresh melt water contributes to the shoaling of the mixed layer enhancing ice edge blooms. In contrast, sea ice formation in the fall reduces light penetration to the upper ocean slowing primary production in marine waters. Polar biogeochemical modeling studies typically consider these types of ice-ocean interactions. However, sea ice itself is a biogeochemically active medium, contributing a significant and, possibly, essential source of primary production to polar regions in early spring and fall. Here we present numerical simulations using the Los Alamos Sea Ice Model (CICE) with prognostic salinity and sea ice biogeochemistry. This study investigates the relationship between sea ice multiphase physics and sea ice productivity. Of particular emphasis are the processes of gravity drainage, melt water flushing, and snow loading. During sea ice formation, desalination by gravity drainage facilitates nutrient exchange between ocean and ice maintaining ice algal blooms in early spring. Melt water flushing releases ice algae and nutrients to underlying waters limiting ice production. Finally, snow loading, particularly in the Southern Ocean, forces sea ice below the ocean surface driving an upward flow of nutrient rich water into the ice to the benefit of interior and freeboard communities. Incorporating ice microphysics in CICE has given us an important tool for assessing the importance of these processes for polar algal production at global scales.

Jeffery, Nicole [Los Alamos National Laboratory; Hunke, Elizabeth [Los Alamos National Laboratory; Elliott, Scott [Los Alamos National Laboratory; Turner, Adrian [Los Alamos National Laboratory

2012-06-18T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

ARM - Measurement - Cloud ice particle  

NLE Websites -- All DOE Office Websites (Extended Search)

ice particle ice particle ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud ice particle Particles made of ice found in clouds. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments MET : Surface Meteorological Instrumentation Field Campaign Instruments REPLICATOR : Balloon-borne Ice Crystal Replicator CPI : Cloud Particle Imager CVI-AIR : Counterflow Virtual Impactor LEARJET : Lear Jet PARTIMG : Particle imager UAV-PROTEUS-MICRO : Proteus Cloud Microphysics Instruments

102

Dynamics of ice shelf rift propagation and iceberg calving inferred from geodetic and seismic observations  

E-Print Network (OSTI)

2. Ice Shelves . . . . . . . . . . . . . . . . .5. Ice Rheology . . . . . . . . . . . . . 6.vi Calving Glaciers and Ice

Bassis, Jeremy N.

2007-01-01T23:59:59.000Z

103

Passive solar roof ice melter  

Science Conference Proceedings (OSTI)

An elongated passive solar roof ice melter is placed on top of accumulated ice and snow including an ice dam along the lower edge of a roof of a heated building and is held against longitudinal movement with respect to itself. The melter includes a bottom wall having an upper surface highly absorbent to radiant solar energy; a first window situated at right angles with respect to the bottom wall, and a reflecting wall connecting the opposite side edges of the bottom wall and the first window. The reflecting wall has a surface facing the bottom wall and the window which is highly reflective to radiant solar energy. Radiant solar energy passes through the first window and either strikes the highly absorbent upper surface of the bottom wall or first strikes the reflecting wall to be reflected down to the upper surface of the bottom wall. The heat generated thereby melts through the ice below the bottom wall causing the ice dam to be removed between the bottom wall and the top of the roof and immediately adjacent to the ice melter along the roof. Water dammed up by the ice dam can then flow down through this break in the dam and drain out harmlessly onto the ground. This prevents dammed water from seeping back under the shingles and into the house to damage the interior of the house.

Deutz, R.T.

1981-09-29T23:59:59.000Z

104

The search for 'Kulturpalast' in the historic core of Dresden, Germany  

E-Print Network (OSTI)

The Kulturpalast is located in the middle of Dresden's historic core, the result of socialist expressions of monumentality and modernity. It has served as a major congress center in Dresden for more than thirty years. As ...

Kim, Ho-Jeong, 1972-

2000-01-01T23:59:59.000Z

105

Forecast Verification of the Polar Ice Prediction System (PIPS) Sea Ice Concentration Fields  

Science Conference Proceedings (OSTI)

The National Ice Center relies upon a coupled iceocean model called the Polar Ice Prediction System (PIPS) to provide guidance for its 24120-h sea ice forecasts. Here forecast skill assessments of the sea ice concentration (C) fields from PIPS ...

Michael L. Van Woert; Cheng-Zhi Zou; Walter N. Meier; Philip D. Hovey; Ruth H. Preller; Pamela G. Posey

2004-06-01T23:59:59.000Z

106

MODERN  

NLE Websites -- All DOE Office Websites (Extended Search)

"shale gas," is one of the most rapidly expanding trends in onshore domestic oil and gas exploration and production today. In some areas, this has included bringing drilling and...

107

Ice_slurry_fact_sheet  

NLE Websites -- All DOE Office Websites (Extended Search)

new approach to saving stroke and cardiac arrest victims by using a specially engineered ice slurry to cool organs. The technology is also being investigated as a way to improve...

108

Method of forming clathrate ice  

DOE Patents (OSTI)

A method of forming clathrate ice in a supercooled water-based liquid contained in a vessel is disclosed. Initially, an oscillator device is located in the liquid in the vessel. The oscillator device is then oscillated ultrasonically so that small crystals are formed in the liquid. These small crystals serve as seed crystals for ice formation in the liquid and thereby prevent supercooling of the liquid. Preferably, the oscillating device is controlled by a thermostat which initiates operation of the oscillator device when the temperature of the liquid is lowered to the freezing point. Thereafter, the operation of the oscillator device is terminated when ice is sensed in the liquid by an ice sensor.

Hino, Toshiyuki (Tokyo, JP); Gorski, Anthony J. (Lemont, IL)

1987-01-01T23:59:59.000Z

109

Method of forming calthrate ice  

DOE Patents (OSTI)

A method of forming clathrate ice in a supercooled water-based liquid contained in a vessel is disclosed. Initially, an oscillator device is located in the liquid in the vessel. The oscillator device is then oscillated ultransonically so that small crystals are formed in the liquid. Thes small crystals serve as seed crystals for ice formation in the liquid and thereby prevent supercooling of the liquid. Preferably, the oscillating device is controlled by a thermostat which initiates operation of the oscillator device when the temperature of the liquid is lowered to the freezing point. Thereafter, the operation of the oscillator device is terminated when ice is sensed in the liquid by an ice sensor.

Hino, T.; Gorski, A.J.

1985-09-30T23:59:59.000Z

110

Melting of Ice under Pressure  

SciTech Connect

The melting of ice under pressure is investigated with a series of first principles molecular dynamics simulations. In particular, a two-phase approach is used to determine the melting temperature of the ice-VII phase in the range of 10 to 50 GPa. Our computed melting temperatures are consistent with existing diamond anvil cell experiments. We find that for pressures between 10 to 40 GPa, ice melts as a molecular solid. For pressures above {approx}45 GPa there is a sharp increase in the slope of the melting curve due to the presence of molecular dissociation and proton diffusion in the solid, prior to melting. The onset of significant proton diffusion in ice-VII as a function of increasing temperature is found to be gradual and bears many similarities to that of a type-II superionic solid.

Schwegler, E; Sharma, M; Gygi, F; Galli, G

2008-07-31T23:59:59.000Z

111

VOLATILE TRANSPORT INSIDE SUPER-EARTHS BY ENTRAPMENT IN THE WATER-ICE MATRIX  

SciTech Connect

Whether volatiles can be entrapped in a background matrix composing planetary envelopes and be dragged via convection to the surface is a key question in understanding atmospheric fluxes, cycles, and composition. In this paper, we consider super-Earths with an extensive water mantle (i.e., water planets), and the possibility of entrapment of methane in their extensive water-ice envelopes. We adopt the theory developed by van der Waals and Platteeuw for modeling solid solutions, often used for modeling clathrate hydrates, and modify it in order to estimate the thermodynamic stability field of a new phase called methane filled ice Ih. We find that in comparison to water ice VII the filled ice Ih structure may be stable not only at the high pressures but also at the high temperatures expected at the core-water mantle transition boundary of water planets.

Levi, A.; Podolak, M. [Department of Geophysics and Planetary Science, Tel Aviv University, Tel Aviv 69978 (Israel); Sasselov, D., E-mail: amitlevi.planetphys@gmail.com [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-05-20T23:59:59.000Z

112

An Inverse Method for Tracking Ice Motion in the Marginal Ice Zone Using Sequential Satellite Images  

Science Conference Proceedings (OSTI)

A new method for tracking ice motion and estimating ocean surface currents from sequential satellite images is presented. It is particularly suited for the marginal ice zone. A simple ice advection model, driven by wind and surface currents, is ...

Mark Buehner; Keith R. Thompson; Ingrid Peterson

1997-12-01T23:59:59.000Z

113

Overview on Hydrate Coring, Handling and Analysis  

SciTech Connect

Gas hydrates are crystalline, ice-like compounds of gas and water molecules that are formed under certain thermodynamic conditions. Hydrate deposits occur naturally within ocean sediments just below the sea floor at temperatures and pressures existing below about 500 meters water depth. Gas hydrate is also stable in conjunction with the permafrost in the Arctic. Most marine gas hydrate is formed of microbially generated gas. It binds huge amounts of methane into the sediments. Worldwide, gas hydrate is estimated to hold about 1016 kg of organic carbon in the form of methane (Kvenvolden et al., 1993). Gas hydrate is one of the fossil fuel resources that is yet untapped, but may play a major role in meeting the energy challenge of this century. In June 2002, Westport Technology Center was requested by the Department of Energy (DOE) to prepare a ''Best Practices Manual on Gas Hydrate Coring, Handling and Analysis'' under Award No. DE-FC26-02NT41327. The scope of the task was specifically targeted for coring sediments with hydrates in Alaska, the Gulf of Mexico (GOM) and from the present Ocean Drilling Program (ODP) drillship. The specific subjects under this scope were defined in 3 stages as follows: Stage 1: Collect information on coring sediments with hydrates, core handling, core preservation, sample transportation, analysis of the core, and long term preservation. Stage 2: Provide copies of the first draft to a list of experts and stakeholders designated by DOE. Stage 3: Produce a second draft of the manual with benefit of input from external review for delivery. The manual provides an overview of existing information available in the published literature and reports on coring, analysis, preservation and transport of gas hydrates for laboratory analysis as of June 2003. The manual was delivered as draft version 3 to the DOE Project Manager for distribution in July 2003. This Final Report is provided for records purposes.

Jon Burger; Deepak Gupta; Patrick Jacobs; John Shillinglaw

2003-06-30T23:59:59.000Z

114

Ice structures, patterns, and processes: A view across the ice-fields  

E-Print Network (OSTI)

We look ahead from the frontiers of research on ice dynamics in its broadest sense; on the structures of ice, the patterns or morphologies it may assume, and the physical and chemical processes in which it is involved. We highlight open questions in the various fields of ice research in nature; ranging from terrestrial and oceanic ice on Earth, to ice in the atmosphere, to ice on other solar system bodies and in interstellar space.

Bartels-Rausch, Thorsten; Cartwright, Julyan H E; Escribano, Rafael; Finney, John L; Grothe, Hinrich; Gutirrez, Pedro J; Haapala, Jari; Kuhs, Werner F; Pettersson, Jan B C; Price, Stephen D; Sainz-Daz, C Ignacio; Stokes, Debbie J; Strazzulla, Giovanni; Thomson, Erik S; Trinks, Hauke; Uras-Aytemiz, Nevin; 10.1103/RevModPhys.84.885

2012-01-01T23:59:59.000Z

115

Effects of Surface Roughness and Surface Energy on Ice Adhesion ...  

Science Conference Proceedings (OSTI)

Ice adheres to steel surfaces when the environment temperature is low. In many cases, ice formation on surfaces is unwanted; therefore, anti-icing techniques...

116

ICR-ICE Standard Operating Procedures | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ICR-ICE Standard Operating Procedures ICR-ICE Standard Operating Procedures ICE-ICR SOP.pdf More Documents & Publications External Independent Review (EIR) Standard Operating...

117

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Delivery and Energy Reliability MODERN GRID S T R A T E G Y 2 Today's topics Smart Grid background Why modernize the grid? What is the Smart Grid? What is the value...

118

Gender and Modernity in Colonial Korea  

E-Print Network (OSTI)

Kim Gender & Modernity in Colonial Korea T was central toprocess in colonial Korea (19101945). A consideration of

Jung-Kim, Jennifer J.

2006-01-01T23:59:59.000Z

119

Radiative Forcing of Climate By Ice-Age Atmospheric Dust  

E-Print Network (OSTI)

During glacial periods, dust deposition rates and inferred atmospheric concentrations were globally much higher than present. According to recent model results, the large enhancement of atmospheric dust content at the last glacial maximum (LGM) can be explained only if increases in the potential dust source areas are taken into account. Such increases are to be expected, due to e#ects of low precipitation and low atmospheric (CO 2 ) on plant growth. Here the modelled three-dimensional dust fields from Mahowald et al. and modelled seasonally varying surface-albedo fields derived in a parallel manner, are used to quantify the mean radiative forcing due to modern (non-anthropogenic) and LGM dust. The e#ect of mineralogical provenance on the radiative properties of the dust is taken into account, as is the range of optical properties associated with uncertainties about the mixing state of the dust particles. The high-latitude (poleward of 45#) mean change in forcing (LGM minus modern) is estimated to be small (--0.9 to +0.2 W m ), especially when compared to nearly --20 W m due to reflection from the extended ice sheets. Although the net e#ect of dust over ice sheets is a positive forcing (warming), much of the simulated high-latitude dust was not over the ice sheets, but over unglaciated regions close to the expanded dust source region in central Asia. In the tropics the change in forcing is estimated to be overall negative, and of similarly large magnitude (--2.2 to --3.2 W m ) to the radiative cooling e#ect of low atmospheric (CO 2 ). Thus, the largest long-term climatic e#ect of the LGM dust is likely to have been a cooling of the tropics. Low tropical sea-surface temperatures, low atmospheric (CO 2 ) and high atmospheric dust loading may be mutually reinforcin...

T. Claquin; C. Roelandt; K.E. Kohfeld; S.P. Harrison; I. Tegen; I.C. Prentice; Y. Balkanski; Prentice Y. Balkanski; G. Bergametti; N. Mahowald; M. Schulz; M. Schulz; K. E. Kohfeld; K. E. Kohfeld; C. Roelandt; C. Roelandt; S. P. Harrison; S. P. Harrison; S. P. Harrison; G. Bergametti; H. Rodhe; H. Rodhe; M. Hansson; M. Hansson; N. Mahowald; N. Mahowald

2003-01-01T23:59:59.000Z

120

Ross Ice Shelf in situ radio-frequency ice attenuation  

E-Print Network (OSTI)

We have measured the in situ average electric field attenuation length for radio-frequency signals broadcast vertically through the Ross Ice Shelf. We chose a location, Moore Embayment, south of Minna Bluff, known for its high reflectivity at the ice-sea interface. We confirmed specular reflection and used the return pulses to measure the average attenuation length from 75-1250 MHz over the round-trip distance of 1155 m. We find the average electric field attenuation length to vary from 500 m at 75 MHz to 300 m at 1250 MHz, with an experimental uncertainty of 55 to 15 m. We discuss the implications for neutrino telescopes that use the radio technique and include the Ross Ice Shelf as part of their sensitive volume.

Taylor Barrella; Steven Barwick; David Saltzberg

2010-11-02T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Modern Geothermal Features | Open Energy Information  

Open Energy Info (EERE)

Modern Geothermal Features Modern Geothermal Features Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Modern Geothermal Features Dictionary.png Modern Geothermal Features: Active geothermal manifestations such as hot springs, fumaroles, steaming ground, mud pots, mud pools, mud volcanoes, or geysers. Other definitions:Wikipedia Reegle When geothermal systems have conduits available to the surface, they cause surface manifestations (or geothermal features). These features may vary between steam seeps (fumaroles) or pure fluid manifestations (geysers and hot springs) causing spectacular mineral formations (e.g. sinter terraces, tufa mounds). These types of manifestations are clear indications of an underlying geothermal system. Geothermal systems with no modern surface

122

Forecast Calls for Better Models: Examining the Core  

NLE Websites -- All DOE Office Websites (Extended Search)

Forecast Calls for Better Models: Examining the Core Forecast Calls for Better Models: Examining the Core Components of Arctic Clouds to Clear Their Influence on Climate For original submission and image(s), see ARM Research Highlights http://www.arm.gov/science/highlights/ Research Highlight Predicting how atmospheric aerosols influence cloud formation and the resulting feedback to climate is a challenge that limits the accuracy of atmospheric models. This is especially true in the Arctic, where mixed-phase (both ice- and liquid-based) clouds are frequently observed, but the processes that determine their composition are poorly understood. To obtain a closer look at what makes up Arctic clouds, scientists characterized cloud droplets and ice crystals collected at the North Slope of Alaska as part of the Indirect and Semi-Direct Aerosol Campaign (ISDAC) field study

123

Ice Energy | Open Energy Information  

Open Energy Info (EERE)

Ice Energy Ice Energy Jump to: navigation, search Logo: Ice Energy Name Ice Energy Address 9351 Eastman Park Drive Place Windsor, Colorado Zip 80550 Sector Renewable energy Product Energy Storage Year founded 2003 Number of employees 51-200 Phone number 970-545-3630 Website http://www.ice-energy.com/ Coordinates 40.4651775°, -104.882° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.4651775,"lon":-104.882,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

124

Relative Dispersion of Ice Crystals in Seeded Cumuli  

Science Conference Proceedings (OSTI)

Relative dispersion of ice crystals was measured in 30 seeded cumulus clouds. A quasi-instantaneous, vertical area source of ice was generated by releasing dry-ice pellets from an airplane. The ice concentration distribution and relative ...

Jeffrey C. Weil; R. Paul Lawson; Alfred R. Rodi

1993-06-01T23:59:59.000Z

125

Rheology of Discrete Failure Regimes of Anisotropic Sea Ice  

Science Conference Proceedings (OSTI)

A rheological model of sea ice is presented that incorporates the orientational distribution of ice thickness in leads embedded in isotropic floe ice. Sea ice internal stress is determined by coulombic, ridging and tensile failure at orientations ...

Alexander V. Wilchinsky; Daniel L. Feltham

2012-07-01T23:59:59.000Z

126

ICE Solar | Open Energy Information  

Open Energy Info (EERE)

ICE Solar ICE Solar Jump to: navigation, search Name ICE Solar Place Hyderabad, Andhra Pradesh, India Sector Solar Product India-based company focused on solar PV engineering, procurement and construction opportunities. Coordinates 17.6726°, 77.5971° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":17.6726,"lon":77.5971,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

127

Methane (CH4)  

NLE Websites -- All DOE Office Websites (Extended Search)

Methane (CH4) Gateway Pages to Methane Data Modern Records of Atmospheric Methane (CH4) and a 2000-year Ice-core Record from Law Dome, Antarctica 800,000-year Ice-Core Records of...

128

Carbon Dioxide (CO2)  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Dioxide (CO2) Carbon Dioxide (CO2) Gateway Pages to Carbon Dioxide Data Modern records and ice core records back 2000 years 800,000 year records from ice cores Other...

129

Modeling Sea Ice Transport Using Incremental Remapping  

Science Conference Proceedings (OSTI)

Sea ice models contain transport equations for the area, volume, and energy of ice and snow in various thickness categories. These equations typically are solved with first-order-accurate upwind schemes, which are very diffusive; with second-...

William H. Lipscomb; Elizabeth C. Hunke

2004-06-01T23:59:59.000Z

130

Quantum Ice : a quantum Monte Carlo study  

E-Print Network (OSTI)

Ice states, in which frustrated interactions lead to a macroscopic ground-state degeneracy, occur in water ice, in problems of frustrated charge order on the pyrochlore lattice, and in the family of rare-earth magnets collectively known as spin ice. Of particular interest at the moment are "quantum spin ice" materials, where large quantum fluctuations may permit tunnelling between a macroscopic number of different classical ground states. Here we use zero-temperature quantum Monte Carlo simulations to show how such tunnelling can lift the degeneracy of a spin or charge ice, stabilising a unique "quantum ice" ground state --- a quantum liquid with excitations described by the Maxwell action of 3+1-dimensional quantum electrodynamics. We further identify a competing ordered "squiggle" state, and show how both squiggle and quantum ice states might be distinguished in neutron scattering experiments on a spin ice material.

Nic Shannon; Olga Sikora; Frank Pollmann; Karlo Penc; Peter Fulde

2011-05-20T23:59:59.000Z

131

Why Sequence Lake Vostok accretion ice?  

NLE Websites -- All DOE Office Websites (Extended Search)

Sequence Lake Vostok accretion ice? Lake Vostok is the largest known subglacial lake in central Antarctica, though it's been buried under 4 kilometers (nearly 2.5 miles) of ice for...

132

Microsoft Word - IceMountainFinal.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

Tumbled-down boulders, called talus, on Ice Mountain's north- western slope collect ice during the winter. In the summer, cold air flows out of vents in the base of the talus,...

133

Icing Conditions Encountered by a Research Aircraft  

Science Conference Proceedings (OSTI)

The characteristics of clouds which have led to airframe icing on an instrumented Beechcraft Super King Air are summarized. The icing encounters occurred at altitudes from 08000 m MSL, in summer and winter, in stratiform and cumuliform clouds, ...

Wayne R. Sand; William A. Cooper; Marcia K. Politovich; Donald L. Veal

1984-10-01T23:59:59.000Z

134

Ice Formation in Gas-Diffusion Layers  

E-Print Network (OSTI)

of California. Ice Formation in Gas-Diffusion Layers Thomasconditions, ice forms in the gas-diffusion layer (GDL) of areaction of reactant gases (1). A number of strategies exist

Dursch, Thomas

2013-01-01T23:59:59.000Z

135

Ice Crystal Replication with Common Plastic Solutions  

Science Conference Proceedings (OSTI)

Use of common plastics, i.e., polystyrene, Plexiglas (polymethyl methacrylate) and Lexan (polycarbonate), was investigated for ice crystal replication. The results suggest that all common plastics tested are usable for ice crystal replication ...

Tsuneya Takahashi; Norihiko Fukuta

1988-02-01T23:59:59.000Z

136

Airplane Instrument to Detect Ice Particles  

Science Conference Proceedings (OSTI)

A simple instrument that detects ice particles has been developed for use in airplane studies of thunderstorms. Although sophisticated instruments are available for imaging atmospheric ice particles, the spatial resolution of the particle ...

J. J. Jones; C. Grotbeck; B. Vonnegut

1989-08-01T23:59:59.000Z

137

Light Scattering by Single Natural Ice Crystals  

Science Conference Proceedings (OSTI)

During the South Pole Ice Crystal Experiment, angular scattering intensities (ASIs) of single ice crystals formed in natural conditions were measured for the first time with the polar nephelometer instrument. The microphysical properties of the ...

Valery Shcherbakov; Jean-Franois Gayet; Brad Baker; Paul Lawson

2006-05-01T23:59:59.000Z

138

{sup 13}CO CORES IN THE TAURUS MOLECULAR CLOUD  

SciTech Connect

Young stars form in molecular cores, which are dense condensations within molecular clouds. We have searched for molecular cores traced by {sup 13}CO J = 1 {yields} 0 emission in the Taurus molecular cloud and studied their properties. Our data set has a spatial dynamic range (the ratio of linear map size to the pixel size) of about 1000 and spectrally resolved velocity information, which together allow a systematic examination of the distribution and dynamic state of {sup 13}CO cores in a large contiguous region. We use empirical fit to the CO and CO{sub 2} ice to correct for depletion of gas-phase CO. The {sup 13}CO core mass function ({sup 13}CO CMF) can be fitted better with a log-normal function than with a power-law function. We also extract cores and calculate the {sup 13}CO CMF based on the integrated intensity of {sup 13}CO and the CMF from Two Micron All Sky Survey. We demonstrate that core blending exists, i.e., combined structures that are incoherent in velocity but continuous in column density. The core velocity dispersion (CVD), which is the variance of the core velocity difference {delta}v, exhibits a power-law behavior as a function of the apparent separation L: CVD (km s{sup -1}) {proportional_to}L(pc){sup 0.7}. This is similar to Larson's law for the velocity dispersion of the gas. The peak velocities of {sup 13}CO cores do not deviate from the centroid velocities of the ambient {sup 12}CO gas by more than half of the line width. The low velocity dispersion among cores, the close similarity between CVD and Larson's law, and the small separation between core centroid velocities and the ambient gas all suggest that molecular cores condense out of the diffuse gas without additional energy from star formation or significant impact from converging flows.

Qian Lei; Li Di [National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Goldsmith, Paul F., E-mail: lqian@nao.cas.cn, E-mail: ithaca.li@gmail.com [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA (United States)

2012-12-01T23:59:59.000Z

139

Off peak ice storage generation  

DOE Green Energy (OSTI)

Due to the high costs associated with peak demand charges imposed by most electrical companies today, various means of shifting the peak HVAC load have been identified by the industry. This paper discusses the results of a study based upon a building site located in the high desert of the southwestern United States that evaluated ice storage as a mechanism of operating cost reductions. The discussion addresses both the seasonal and the annual cost and energy impacts of an ice storage system when used in place of an air-to-air heat pump system.

Davis, R.E.; Cerbo, F.J.

1985-01-01T23:59:59.000Z

140

Sound Scattering from Sea Ice: Aspects Relevant to Ice-Draft Profiling by Sonar  

Science Conference Proceedings (OSTI)

Accurate discrimination between thin ice and open water using sonar is an important practical concern for the calibration of ice-draft observations and for the use of ice-profiling sonar in climate-related studies of sea ice. To guide improvement ...

Humfrey Melling

1998-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Smoothed particle hydrodynamics non-Newtonian model for ice-sheet and ice-shelf dynamics  

Science Conference Proceedings (OSTI)

We propose a new three-dimensional smoothed particle hydrodynamics (SPH) non-Newtonian model to study coupled ice-sheet and ice-shelf dynamics. Most existing ice-sheet numerical models use grid-based Eulerian discretizations, and are usually restricted ... Keywords: Grounding line, Ice sheet, Non-Newtonian fluid, Smoothed particle hydrodynamics

W. Pan, A. M. Tartakovsky, J. J. Monaghan

2013-06-01T23:59:59.000Z

142

ICE and ICE/T: tools to assist in compiler design and implementation  

Science Conference Proceedings (OSTI)

ICE (Intermediate Code Engine) and ICE/T (ICE/Translator) are compiler back ends that execute on a Java Virtual Machine (JVM). They allow the student to complete a working compiler quickly and can execute on any platform that supplies a JVM. ICE is a ... Keywords: back-end, compiler, project, translator

Truman Parks Boyer; Mohsen Chitsaz

2004-12-01T23:59:59.000Z

143

Gas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion  

E-Print Network (OSTI)

on the ground surface as snow- drift and the ice sheet during a growing phase, with a mixing ratio of the localGas isotopes in ice reveal a vegetated central Greenland during ice sheet invasion R. Souchez,1 J prevailing during build-up of the Greenland Ice Sheet (GIS) are not yet established. Here we use results from

Chappellaz, Jérôme

144

Global simulations of ice nucleation and ice supersaturation with an improved cloud scheme in the Community  

E-Print Network (OSTI)

and supersaturation in CAM. The new model is able to reproduce field observations of ice mass and mixed phase cloudGlobal simulations of ice nucleation and ice supersaturation with an improved cloud scheme; accepted 3 June 2010; published 28 September 2010. [1] A processbased treatment of ice supersaturation

Gettelman, Andrew

145

Application in Advanced Laparoscopic Procedures: Medical Ice...  

NLE Websites -- All DOE Office Websites (Extended Search)

Applications Homeland Security Applications Biomedical Applications Medical Ice Slurry Coolants for Inducing Targeted-OrganTissue Protective Cooling Technology...

146

SPECIALREPORT95-18 Structural Ice Control  

E-Print Network (OSTI)

described in this review are not limited to confluence ice situations. A second phase of the work unit will examine and select confluences with known ice problems for detailed analysis. A third phase will combineSPECIALREPORT95-18 Structural Ice Control Review of Existing Methods Andrew M. Tuthill July 1995

147

Medical ice slurry production device  

DOE Patents (OSTI)

The present invention relates to an apparatus for producing sterile ice slurries for medical cooling applications. The apparatus is capable of producing highly loaded slurries suitable for delivery to targeted internal organs of a patient, such as the brain, heart, lungs, stomach, kidneys, pancreas, and others, through medical size diameter tubing. The ice slurry production apparatus includes a slurry production reservoir adapted to contain a volume of a saline solution. A flexible membrane crystallization surface is provided within the slurry production reservoir. The crystallization surface is chilled to a temperature below a freezing point of the saline solution within the reservoir such that ice particles form on the crystallization surface. A deflector in the form of a reciprocating member is provided for periodically distorting the crystallization surface and dislodging the ice particles which form on the crystallization surface. Using reservoir mixing the slurry is conditioned for easy pumping directly out of the production reservoir via medical tubing or delivery through other means such as squeeze bottles, squeeze bags, hypodermic syringes, manual hand delivery, and the like.

Kasza, Kenneth E. (Palos Park, IL); Oras, John (Des Plaines, IL); Son, HyunJin (Naperville, IL)

2008-06-24T23:59:59.000Z

148

Calmac Ice Storage Test report  

DOE Green Energy (OSTI)

The Ice Storage Test Facility (ISTF) is designed to test commercial ice storage systems. Calmac provided a storage tank equipped with coils designed for use with a secondary fluid system. The Calmac ice storage system was tested over a wide range of operating conditions. Measured system performance during charging was similar to that reported by the manufacturer. Both the measured average and minimum brine temperatures were in close agreement with Calmac's literature values, and the ability to fully charge the tank was relatively unaffected by charging rate and brine flow rate. During discharge cycles, the storage tank outlet temperature was strongly affected by the discharge rate. The discharge capacity was dependent upon both the selected discharge rate and maximum allowable tank outlet temperature. Based on these tests, storage tank selection must depend most strongly on the discharge conditions required to serve the load. This report describes Calmac system performance fully under both charging and discharging conditions. Companion reports describe ISTF test procedures and ice-making efficiency test results that are common to many of the units tested. 11 refs., 31 figs., 9 tabs.

Stovall, T.K.

1991-08-01T23:59:59.000Z

149

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Grid: Grid: Features, Benefits and Costs Illinois Smart Grid Initiative Joe Miller - Modern Grid Strategy Team July 8, 2008 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability 2 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 2 Today's topics Why modernize the grid? What is the Smart Grid? What is the value proposition? Questions 3 MODERN GRID S T R A T E G Y Why modernize the grid? 4 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y Platform for Prosperity Economy now based on electricity Computers, networks, phone system, devices, robotic manufacturing, stock markets Lifestyle now based on electricity

150

Gender and Modernity in Colonial Korea  

E-Print Network (OSTI)

by Jennifer J. Jung-Kim Gender & Modernity in Colonial Koreathe ongo- ing reformulation of gender identities. First, Iupdate he reconstruction of gender identities My findings

Jung-Kim, Jennifer J.

2006-01-01T23:59:59.000Z

151

Comparative economics: evolution and the modern economy  

E-Print Network (OSTI)

A comparison of primate economies. Journal of Bioeconomics,1999). Complexity and the economy. Science, 284, 107109.evolution and the modern economy Ghabrial, A. S. , &

Vermeij, Geerat J.

2009-01-01T23:59:59.000Z

152

THE ENERGY BALANCE OF MODERN WIND TURBINES  

E-Print Network (OSTI)

A modern Danish 600 kW wind turbine will recover all the energy spent in its manufacture, maintenance, and scrapping within some three months of its commissioning.

unknown authors

1997-01-01T23:59:59.000Z

153

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Grid: Features, Benefits and Costs Illinois Smart Grid Initiative Joe Miller - Modern Grid Strategy Team July 8, 2008 Conducted by the National Energy Technology Laboratory Funded...

154

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

FERC - NARUC Smart Grid Collaborative Meeting Joe Miller - Modern Grid Strategy Team July 23, 2008 Conducted by the National Energy Technology Laboratory Funded by the U.S....

155

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Structuring the Smart Grid Framework: Application of Complex Systems Engineering Joe Miller - DOE NETL Modern Grid Team Lead Committee on Science, Engineering, and Public Policy...

156

Sea bottom coring apparatus  

SciTech Connect

A marine bottom coring apparatus for drilling into and obtaining core samples from subsea formations is described. It is particularly useful for obtaining core samples from hard rock formations. The apparatus includes a frame having buoyancy, which has sufficient capacity to float the apparatus in the unballast condition. Ballasting means are also connected to the frame and having ballast capacity sufficient to overcome a buoyancy of the buoyancy means. Release means are provided for releasing the ballast at a predetermined time. The frame has the core drilling means attached to it and is supported on the sea bottom, whereby the apparatus may be sunk to the sea bottom by the ballast, a core sample drilled from the subsea formation, and the apparatus floated to the surface upon release of the ballast. (11 claims)

Williamson, T.N.

1969-05-06T23:59:59.000Z

157

Detecting extra-galactic supernova neutrinos in the Antarctic ice  

E-Print Network (OSTI)

Building on the technological success of the IceCube neutrino telescope, we outline a prospective low-energy extension that utilizes the clear ice of the South Pole. Aiming at a 10 Mton effective volume and a 10 MeV threshold, the detector would provide sufficient sensitivity to detect neutrino bursts from core-collapse supernovae (SNe) in nearby galaxies. The detector geometry and required density of instrumentation are discussed along with the requirements to control the various sources of background. We find that the resulting detector will be able to detect SNe from beyond 10 Mpc, delivering between 11 and 46 regular core-collapse SN detections per decade. It would further allow to study more speculative phenomena, such as optically dark (failed) SNe, where the collapse proceeds directly to a black hole, at a detection rate similar to the regular SNe. We find that the biggest technological challenge lies in the required large number of large area photo-sensors, with simultaneous strict limits on the allowed noise rates. If both can be realized, the detector concept we present will reach the required sensitivity in a cost effective manner and hence offers a route to future routine observations of SNe with neutrinos.

Sebastian Bser; Marek Kowalski; Lukas Schulte; Nora Linn Strotjohann; Markus Voge

2013-04-09T23:59:59.000Z

158

FEM analysis of in-flight ice break-up  

Science Conference Proceedings (OSTI)

Using a fracture mechanics framework, this paper presents a finite element method to simulate the break-up of ice accreted on the wings of aircraft. The fully automated ice break-up module is integrated in FENSAP-ICE [1,2], which is an in-flight ice ... Keywords: Finite element methods, Fracture mechanics, Ice break-up, Ice shedding, In-flight icing, Multi-physics phenomenon

Shiping Zhang; Oubai El Kerdi; Rooh A. Khurram; Wagdi G. Habashi

2012-09-01T23:59:59.000Z

159

Modernizing helium liquefier G-3  

SciTech Connect

The authors describe the process for modernizing the existing liquefier with minimum alteration of its cooling block, that liquefier being helium expansion-type liquefier G-3, made at the Institute of Physical Problems, Academy of Sciences of the USSR, which operates at a stable output of 40 liters/h. A nitrogen tank and a pistontype expander in the preliminary cooling stages and a throttle in the liquefaction stages are used in G-3. Improving the efficiency of such a cooling cycle is limited by the fact that the optimal parameters of throttle stage of liquefaction do not match with the optimal parameters of the expander in the preliminary cooling stages. Thus, for improving cycle efficiency the pressure in the preliminary stages must be increased but reduced in the liquefaction stage. This paper also presents the solution to this problem. It is further demonstrated that the use of vapor-liquid expander in the liquefaction stage of helium cooling cycle helps increase the output of the unit by 40% in a relatively simple way.

Golikov, G.E.; Danilov, I.B.

1985-02-01T23:59:59.000Z

160

Ice Initiation by Aerosol Particles: Measured and Predicted Ice Nuclei Concentrations versus Measured Ice Crystal Concentrations in an Orographic Wave Cloud  

Science Conference Proceedings (OSTI)

The initiation of ice in an isolated orographic wave cloud was compared with expectations based on ice nucleating aerosol concentrations and with predictions from new ice nucleation parameterizations applied in a cloud parcel model. Measurements ...

T. Eidhammer; P. J. DeMott; A. J. Prenni; M. D. Petters; C. H. Twohy; D. C. Rogers; J. Stith; A. Heymsfield; Z. Wang; K. A. Pratt; K. A. Prather; S. M. Murphy; J. H. Seinfeld; R. Subramanian; S. M. Kreidenweis

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Minimizing Discomfort during the injection of Radiesse with the use of either local anesthetic or ice  

E-Print Network (OSTI)

Comite SL, Storwick GS. Ice minimizes discomfort associatedeither local anesthetic or ice Stephen Comite MD 1 , Alexisinvolves the use of an ice cube for anesthesia. Ice has been

Comite, Stephen; Greene, Alexis; Cieszynski, Sabina A; Zaroovabeli, Pauline; Marks, Karen

2007-01-01T23:59:59.000Z

162

Two dynamical core formulation flaws exposed by a baroclinic instability test case  

E-Print Network (OSTI)

or climate simulations if physical parameterizations or model components, like the ocean or ice, compensate General Circulation Model (GCM) in isolation from the physical parameterization package is an essential stepping stone during the model devel- opment and evaluation phase. The dynamical core tests have

Jablonowski, Christiane

163

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Joe Miller - Modern Grid Team Joe Miller - Modern Grid Team October 6, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 2 Agenda The Smart Grid - a refresher "Push" drivers - a case for action "Pull" drivers - Smart Grid opportunities Some Smart Grid impacts Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 3 What is the role of the MGS? Define a vision for the Modern Grid Reach out to stakeholders for input Assist in the identification of benefits and barriers Facilitate resolution of issues Promote testing of integrated suites of technologies

164

DOE IT Modernization Strategy September 2012  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

IT Modernization Strategy September 2012 IT Modernization Strategy September 2012 1 White Paper: DOE/NNSA Information Technology Modernization Strategy INTRODUCTION This white paper frames a Department of Energy (DOE) and National Nuclear Security Administration (NNSA) strategy for modernizing our Federal information technology (IT) as one of the foundations for management and operational excellence. It outlines some of the current challenges and key strategy points for modernization, along with existing efforts and their role in the strategy. The DOE Strategic Plan establishes IT and cybersecurity as foundational to the achievement of the Department's mission while managing risks aggressively and effectively. This means building systems and infrastructure that are cost effective and support efficient operations, and

165

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

FERC - NARUC Smart Grid Collaborative Meeting FERC - NARUC Smart Grid Collaborative Meeting Joe Miller - Modern Grid Strategy Team July 23, 2008 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability 2 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 2 Today's topics Smart Grid Background What is the Smart Grid? Some closing thoughts Questions 3 MODERN GRID S T R A T E G Y Smart Grid Background 4 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y Many are working on the Smart Grid FERC DOE-OE Grid 2030 GridWise Alliance EEI NERC (FM) DOE/NETL Modern Grid Strategy GridWise Program GridWorks NW GridWise Testbed GridApps CERTS DOE-OE CEC PIER NYSERDA

166

Hydrogen ICE Vehicle Testing Activities  

DOE Green Energy (OSTI)

The Advanced Vehicle Testing Activity teamed with Electric Transportation Applications and Arizona Public Service to develop and monitor the operations of the APS Alternative Fuel (Hydrogen) Pilot Plant. The Pilot Plant provides 100% hydrogen, and hydrogen and compressed natural gas (H/CNG)-blended fuels for the evaluation of hydrogen and H/CNG internal combustion engine (ICE) vehicles in controlled and fleet testing environments. Since June 2002, twenty hydrogen and H/CNG vehicles have accumulated 300,000 test miles and 5,700 fueling events. The AVTA is part of the Department of Energys FreedomCAR and Vehicle Technologies Program. These testing activities are managed by the Idaho National Laboratory. This paper discusses the Pilot Plant design and monitoring, and hydrogen ICE vehicle testing methods and results.

J. Francfort; D. Karner

2006-04-01T23:59:59.000Z

167

Oxygen to the core  

NLE Websites -- All DOE Office Websites (Extended Search)

1-01 1-01 For immediate release: 01/10/2013 | NR-13-01-01 Oxygen to the core Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov Printer-friendly An artist's conception of Earth's inner and outer core. LIVERMORE, Calif. -- An international collaboration including researchers from Lawrence Livermore National Laboratory has discovered that the Earth's core formed under more oxidizing conditions than previously proposed. Through a series of laser-heated diamond anvil cell experiments at high pressure (350,000 to 700,000 atmospheres of pressure) and temperatures (5,120 to 7,460 degrees Fahrenheit), the team demonstrated that the depletion of siderophile (also known as "iron loving") elements can be produced by core formation under more oxidizing conditions than earlier

168

Curing of Compacted Cores  

Science Conference Proceedings (OSTI)

...dry for 1 min. Add water and mull for 1 min. Add oil and mull for 4 min. These materials are mixed in a muller as follows: Sand (by weight), 95.80% Cereal flour, 1.01% Core oil, 1.17% Water, 1.86% Bentonite, 0.16% Oil-sand mixtures are used for cores in sand molds, and by varying their

169

MCNP LWR Core Generator  

Science Conference Proceedings (OSTI)

The reactor core input generator allows for MCNP input files to be tailored to design specifications and generated in seconds. Full reactor models can now easily be created by specifying a small set of parameters and generating an MCNP input for a full reactor core. Axial zoning of the core will allow for density variation in the fuel and moderator, with pin-by-pin fidelity, so that BWR cores can more accurately be modeled. LWR core work in progress: (1) Reflectivity option for specifying 1/4, 1/2, or full core simulation; (2) Axial zoning for moderator densities that vary with height; (3) Generating multiple types of assemblies for different fuel enrichments; and (4) Parameters for specifying BWR box walls. Fuel pin work in progress: (1) Radial and azimuthal zoning for generating further unique materials in fuel rods; (2) Options for specifying different types of fuel for MOX or multiple burn assemblies; (3) Additional options for replacing fuel rods with burnable poison rods; and (4) Control rod/blade modeling.

Fischer, Noah A. [Los Alamos National Laboratory

2012-08-14T23:59:59.000Z

170

Emergency core cooling system  

DOE Patents (OSTI)

A liquid metal cooled fast breeder reactor provided with an emergency core cooling system includes a reactor vessel which contains a reactor core comprising an array of fuel assemblies and a plurality of blanket assemblies. The reactor core is immersed in a pool of liquid metal coolant. The reactor also includes a primary coolant system comprising a pump and conduits for circulating liquid metal coolant to the reactor core and through the fuel and blanket assemblies of the core. A converging-diverging venturi nozzle with an intermediate throat section is provided in between the assemblies and the pump. The intermediate throat section of the nozzle is provided with at least one opening which is in fluid communication with the pool of liquid sodium. In normal operation, coolant flows from the pump through the nozzle to the assemblies with very little fluid flowing through the opening in the throat. However, when the pump is not running, residual heat in the core causes fluid from the pool to flow through the opening in the throat of the nozzle and outwardly through the nozzle to the assemblies, thus providing a means of removing decay heat.

Schenewerk, William E. (Sherman Oaks, CA); Glasgow, Lyle E. (Westlake Village, CA)

1983-01-01T23:59:59.000Z

171

2, 4378, 2006 Ice-driven CO2  

E-Print Network (OSTI)

- dred thousand years, CO2 and ice volume (marine 18 O) have varied in phase both at the 41 000-yearCPD 2, 43­78, 2006 Ice-driven CO2 feedback on ice volume W. F. Ruddiman Title Page Abstract Discussions is the access reviewed discussion forum of Climate of the Past Ice-driven CO2 feedback on ice

Paris-Sud XI, Université de

172

Climate, Ocean and Sea Ice Modeling (COSIM)  

NLE Websites -- All DOE Office Websites (Extended Search)

Earth, Space Sciences » Earth, Space Sciences » Climate, Ocean and Sea Ice Modeling (COSIM) Climate, Ocean and Sea Ice Modeling (COSIM) The COSIM project develops advanced ocean and ice models for evaluating the role of ocean and ice in high-latitude climate change and projecting the impacts of high-latitude change on regions throughout the globe. Get Expertise Phil Jones COSIM Email Matthew Hecht COSIM Email Elizabeth Hunke COSIM Email Mat Maltrud COSIM Email Bill Lipscomb COSIM Email Scott Elliott COSIM Email Todd Ringler COSIM Email We are also developing a set of next-generation ocean and ice models with variable resolution horizontal grids to focus resolution on regions of interest or regions where specific processes (like eddies) need to be resolved. Summary The COSIM project develops advanced ocean and ice models for evaluating the

173

ice rheology in HadCM3  

E-Print Network (OSTI)

Abstract. We present results of an implementation of the Elastic Viscous Plastic (EVP) sea ice dynamics scheme into the Hadley Centre coupled ocean-atmosphere climate model HadCM3. Although the large-scale simulation of sea ice in HadCM3 is quite good with this model, the lack of a full dynamical model leads to errors in the detailed representation of sea ice and limits our confidence in its future predictions. We find that introducing the EVP scheme results in a worse initial simulation of the sea ice. This paper documents various enhancements made to improve the simulation, resulting in a sea ice simulation that is better than the original HadCM3 scheme overall. Importantly, it is more physically based and provides a more solid foundation for future development. We then consider the interannual variability of the sea ice in the new model and demonstrate improvements over the HadCM3 simulation. 1

W. M. Connolley; A. B. Keen; A. J. Mclaren

2006-01-01T23:59:59.000Z

174

Dependence of Sea Ice Yield-Curve Shape on Ice Thickness  

Science Conference Proceedings (OSTI)

In this note, the authors discuss the contribution that frictional sliding of ice floes (or floe aggregates) past each other and pressure ridging make to the plastic yield curve of sea ice. Using results from a previous study that explicitly ...

Alexander V. Wilchinsky; Daniel L. Feltham

2004-12-01T23:59:59.000Z

175

Modeling Thermodynamic IceOcean Interactions at the Base of an Ice Shelf  

Science Conference Proceedings (OSTI)

Models of ocean circulation beneath ice shelves are driven primarily by the heat and freshwater fluxes that are associated with phase changes at the iceocean boundary. Their behavior is therefore closely linked to the mathematical description of ...

David M. Holland; Adrian Jenkins

1999-08-01T23:59:59.000Z

176

A Thermodynamic Coupled Ice-Ocean Model of the Marginal Ice Zone  

Science Conference Proceedings (OSTI)

A coupled ice-ocean model for thermodynamic growth of sea ice suitable for coupling with a similar dynamic model is considered. The model is balanced locally in that no horizontal (or vertical) advection or diffusion of properties are considered. ...

Lars Petter Red

1984-12-01T23:59:59.000Z

177

Assessment of Aircraft Icing Potential and Maximum Icing Altitude from Geostationary Meteorological Satellite Data  

Science Conference Proceedings (OSTI)

A satellite product that displays regions of aircraft icing potential, along with corresponding cloud-top heights, has been developed using data from the Geostationary Operational Environmental Satellite (GOES) imager and sounder. The icing ...

Gary P. Ellrod; Andrew A. Bailey

2007-02-01T23:59:59.000Z

178

Automated Ice-Tethered Profilers for Seawater Observations under Pack Ice in All Seasons  

Science Conference Proceedings (OSTI)

An automated, easily deployed Ice-Tethered Profiler (ITP) instrument system, developed for deployment on perennial sea ice in the polar oceans to measure changes in upper ocean water properties in all seasons, is described, and representative ...

R. Krishfield; J. Toole; A. Proshutinsky; M-L. Timmermans

2008-11-01T23:59:59.000Z

179

Ice Accretion on Wires and Anti-Icing Induced by Joule Effect  

Science Conference Proceedings (OSTI)

This study concerns both the formation of ice accreted around wires due to rotation from gravitational and aerodynamic forces, and the anti-icing induced by the Joule effect. The experiments have been carried out in an instrumented wind tunnel ...

P. Personne; J-F. Gayet

1988-02-01T23:59:59.000Z

180

Measurement of South Pole ice transparency with the IceCube LED calibration system  

E-Print Network (OSTI)

The IceCube Neutrino Observatory, approximately 1 km^3 in size, is now complete with 86 strings deployed in the Antarctic ice. IceCube detects the Cherenkov radiation emitted by charged particles passing through or created in the ice. To realize the full potential of the detector, the properties of light propagation in the ice in and around the detector must be well understood. This report presents a new method of fitting the model of light propagation in the ice to a data set of in-situ light source events collected with IceCube. The resulting set of derived parameters, namely the measured values of scattering and absorption coefficients vs. depth, is presented and a comparison of IceCube data with simulations based on the new model is shown.

IceCube Collaboration; M. G. Aartsen; R. Abbasi; Y. Abdou; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; D. Altmann; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; V. Baum; R. Bay; J. J. Beatty; S. Bechet; J. Becker Tjus; K. -H. Becker; M. Bell; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; A. Bernhard; D. Bertrand; D. Z. Besson; G. Binder; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; S. Bohaichuk; C. Bohm; D. Bose; S. Bser; O. Botner; L. Brayeur; A. M. Brown; R. Bruijn; J. Brunner; S. Buitink; M. Carson; J. Casey; M. Casier; D. Chirkin; B. Christy; K. Clark; F. Clevermann; S. Cohen; D. F. Cowen; A. H. Cruz Silva; M. Danninger; J. Daughhetee; J. C. Davis; C. De Clercq; S. De Ridder; P. Desiati; M. de With; T. DeYoung; J. C. Daz-Vlez; M. Dunkman; R. Eagan; B. Eberhardt; J. Eisch; R. W. Ellsworth; S. Euler; P. A. Evenson; O. Fadiran; A. R. Fazely; A. Fedynitch; J. Feintzeig; T. Feusels; K. Filimonov; C. Finley; T. Fischer-Wasels; S. Flis; A. Franckowiak; R. Franke; K. Frantzen; T. Fuchs; T. K. Gaisser; J. Gallagher; L. Gerhardt; L. Gladstone; T. Glsenkamp; A. Goldschmidt; G. Golup; J. A. Goodman; D. Gra; D. Grant; A. Gro; M. Gurtner; C. Ha; A. Haj Ismail; A. Hallgren; F. Halzen; K. Hanson; D. Heereman; P. Heimann; D. Heinen; K. Helbing; R. Hellauer; S. Hickford; G. C. Hill; K. D. Hoffman; R. Hoffmann; A. Homeier; K. Hoshina; W. Huelsnitz; P. O. Hulth; K. Hultqvist; S. Hussain; A. Ishihara; E. Jacobi; J. Jacobsen; G. S. Japaridze; K. Jero; O. Jlelati; B. Kaminsky; A. Kappes; T. Karg; A. Karle; J. L. Kelley; J. Kiryluk; F. Kislat; J. Kls; S. R. Klein; J. -H. Khne; G. Kohnen; H. Kolanoski; L. Kpke; C. Kopper; S. Kopper; D. J. Koskinen; M. Kowalski; M. Krasberg; G. Kroll; J. Kunnen; N. Kurahashi; T. Kuwabara; M. Labare; H. Landsman; M. J. Larson; M. Lesiak-Bzdak; J. Leute; J. Lnemann; J. Madsen; R. Maruyama; K. Mase; H. S. Matis; F. McNally; K. Meagher; M. Merck; P. Mszros; T. Meures; S. Miarecki; E. Middell; N. Milke; J. Miller; L. Mohrmann; T. Montaruli; R. Morse; R. Nahnhauer; U. Naumann; H. Niederhausen; S. C. Nowicki; D. R. Nygren; A. Obertacke; S. Odrowski; A. Olivas; M. Olivo; A. O'Murchadha; L. Paul; J. A. Pepper; C. Prez de los Heros; C. Pfendner; D. Pieloth; N. Pirk; J. Posselt; P. B. Price; G. T. Przybylski; L. Rdel; K. Rawlins; P. Redl; E. Resconi; W. Rhode; M. Ribordy; M. Richman; B. Riedel; J. P. Rodrigues; C. Rott; T. Ruhe; B. Ruzybayev; D. Ryckbosch; S. M. Saba; T. Salameh; H. -G. Sander; M. Santander; S. Sarkar; K. Schatto; M. Scheel; F. Scheriau; T. Schmidt; M. Schmitz; S. Schoenen; S. Schneberg; L. Schnherr; A. Schnwald; A. Schukraft; L. Schulte; O. Schulz; D. Seckel; S. H. Seo; Y. Sestayo; S. Seunarine; C. Sheremata; M. W. E. Smith; M. Soiron; D. Soldin; G. M. Spiczak; C. Spiering; M. Stamatikos; T. Stanev; A. Stasik; T. Stezelberger; R. G. Stokstad; A. Stl; E. A. Strahler; R. Strm; G. W. Sullivan; H. Taavola; I. Taboada; A. Tamburro; S. Ter-Antonyan; S. Tilav; P. A. Toale; S. Toscano; M. Usner; D. van der Drift; N. van Eijndhoven; A. Van Overloop; J. van Santen; M. Vehring; M. Voge; M. Vraeghe; C. Walck; T. Waldenmaier; M. Wallraff; R. Wasserman; Ch. Weaver; M. Wellons; C. Wendt; S. Westerhoff; N. Whitehorn; K. Wiebe; C. H. Wiebusch; D. R. Williams; H. Wissing; M. Wolf; T. R. Wood; C. Xu; D. L. Xu; X. W. Xu; J. P. Yanez; G. Yodh; S. Yoshida; P. Zarzhitsky; J. Ziemann; S. Zierke; A. Zilles; M. Zoll

2013-01-22T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Siple Coast Ice Streams in a General Antarctic Ice Sheet Model  

Science Conference Proceedings (OSTI)

In an earlier paper by Verbitsky and Saltzman, a vertically integrated, high-resolution, nonlinearly viscous, nonisothermal ice sheet model was presented to calculate the present-day equilibrium regime of the Antarctic ice sheet. Steady-state ...

Mikhail Verbitsky

2005-07-01T23:59:59.000Z

182

IceT users' guide and reference.  

Science Conference Proceedings (OSTI)

The Image Composition Engine for Tiles (IceT) is a high-performance sort-last parallel rendering library. In addition to providing accelerated rendering for a standard display, IceT provides the unique ability to generate images for tiled displays. The overall resolution of the display may be several times larger than any viewport that may be rendered by a single machine. This document is an overview of the user interface to IceT.

Moreland, Kenneth D.

2009-06-01T23:59:59.000Z

183

IceT users' guide and reference.  

Science Conference Proceedings (OSTI)

The Image Composition Engine for Tiles (IceT) is a high-performance sort-last parallel rendering library. In addition to providing accelerated rendering for a standard display, IceT provides the unique ability to generate images for tiled displays. The overall resolution of the display may be several times larger than any viewport that may be rendered by a single machine. This document is an overview of the user interface to IceT.

Moreland, Kenneth D.

2011-01-01T23:59:59.000Z

184

Ice in Clouds ExperimentLayer Clouds. Part II: Testing Characteristics of Heterogeneous Ice Formation in Lee Wave Clouds  

Science Conference Proceedings (OSTI)

Heterogeneous ice nucleation is a source of uncertainty in models that represent ice clouds. The primary goal of the Ice in Clouds ExperimentLayer Clouds (ICE-L) field campaign was to determine if a link can be demonstrated between ice ...

P. R. Field; A. J. Heymsfield; B. J. Shipway; P. J. DeMott; K. A. Pratt; D. C. Rogers; J. Stith; K. A. Prather

2012-03-01T23:59:59.000Z

185

Microparticulate Ice Slurry For Renal Hypothermia: Laparoscopic...  

NLE Websites -- All DOE Office Websites (Extended Search)

MICROPARTICULATE ICE SLURRY FOR RENAL HYPOTHERMIA : LAPAROSCOPIC PARTIAL NEPHRECTOMY IN A PORCINE MODEL Sergey Shikanov a * , Mark Wille a , Michael Large a , Aria Razmaria a ,...

186

Ice Fall Doctors 5, Changing Route  

E-Print Network (OSTI)

Base Camp. The recordings span a wide variety of topics from making and drinking chang to the work of Mount Everest's 'ice fall doctors'....

Loomis, Molly

187

Development of ice self-release mechanisms  

DOE Green Energy (OSTI)

This study reports the results of a series of experiments that investigated a thermal storage technology whereby slush ice is grown on a submerged cold surface, and the resultant growth of slush ice releases without auxiliary thermal or mechanical means. The process investigated consists of growing slush ice from an electrolyte solution of low molarity. The cold surface (substrate) upon which the slush ice forms is submerged in the bulk solution. As the buoyancy force on the ice crystals exceeds the adhesion of the slush ice to the cold surface, the slush ice is forced from the substrate and floats away to the top of the solution. The results of this study reveal the relative insensitivity of the growth rate of ice crystals to solution initial bulk concentration over the range of values tested and to concentration of electrolyte during accumulation of ice crystals. The critical parameter appears to be substrate temperature, which cannot be less than {approximately}2{degrees}C below the freezing point temperature of the solution, because apparent adhesion increases rapidly with decreasing substrate temperature. 1 ref., 6 figs., 7 tabs.

Stewart, W.E. Jr. (Missouri Univ., Independence, MO (USA). Energy Research Lab.)

1989-09-01T23:59:59.000Z

188

Sea ice mapping method for seawinds  

E-Print Network (OSTI)

AbstractA sea ice mapping algorithm for SeaWinds is developed that incorporates statistical and spatial a priori information in a modified maximum a posteriori (MAP) framework. Spatial a priori data are incorporated in the loss terms of a Bayes risk formulation. Conditional distributions and priors for sea ice and ocean statistics are represented as empirical histograms that are forced to conform to a set of expected histograms via principal component filtering. Tuning parameters for the algorithm allow adjustments in the algorithms performance. Results of the algorithm exhibit high correlation with the RemundLong sea ice mapping algorithm for SeaWinds and the Special Sensor Microwave/Imager National Aeronautics and Space Administration Team 30 % ice edge, and are verified with RADARSAT-1 ScanSAR imagery. The resulting sea ice maps exhibit high edge detail, preserve polynyas and ice bodies disjoint from the primary ice sheet, and thus are suitable for use with wind retrieval and sea ice studies. Principles employed in the algorithm may be of interest in other classification studies. Index TermsBayes method, maximum a posteriori (MAP), principal components, QuikSCAT, scatterometer, sea ice extent, SeaWinds. I.

Hyrum S. Anderson; Student Member; David G. Long; Senior Member

2005-01-01T23:59:59.000Z

189

Dynamics of colloidal particles in ice  

E-Print Network (OSTI)

We use X-ray Photon Correlation Spectroscopy (XPCS) to probe the dynamics of colloidal particles in polycrystalline ice. During freezing, the dendritic ice morphology and rejection of particles from the ice created regions of high-particle-density, where some of the colloids were forced into contact and formed disordered aggregates. We find that the particles in these high density regions underwent ballistic motion coupled with both stretched and compressed exponential decays of the intensity autocorrelation function, and that the particles' characteristic velocity increased with temperature. We explain this behavior in terms of ice grain boundary migration.

Melissa Spannuth; S. G. J. Mochrie; S. S. L. Peppin; J. S. Wettlaufer

2010-12-31T23:59:59.000Z

190

Ice hockey players' perceived legitimacy of aggression.  

E-Print Network (OSTI)

??Recent incidents of aggressive and violent behavior in professional ice hockey have caused many in and out of the sport world to again question the (more)

Visek, Amanda J.

2004-01-01T23:59:59.000Z

191

Scouting technical skills in ice hockey.  

E-Print Network (OSTI)

??The main objective was to create an effective scouting tool to evaluate technical skills of an ice hockey player. The purpose was to provide an (more)

Rih, Tuukka

2012-01-01T23:59:59.000Z

192

Guide for organizing ice hockey events.  

E-Print Network (OSTI)

??The Purpose of making a Guide for Organizing Ice Hockey Events was to create an easy following guide for students at Vierumki and other people (more)

Maclean, Ross

2010-01-01T23:59:59.000Z

193

Therapeutic Hypothermia: Protective Cooling Using Medical Ice ...  

Emergency Responders More Time Video: Laparoscopic Partial Nephrectomy with Ice Slurry as Coolant in the Porcine Model License Status: Available for ...

194

A Simplified IceOcean Coupled Model for the Antarctic Ice Melt Season  

Science Conference Proceedings (OSTI)

In the Antarctic Ocean, sea ice melts mostly by warming of the ocean mixed layer through heat input (mainly solar radiation) in open water areas. A simplified iceupper ocean coupled model is proposed in which sea ice melts only by the ocean heat ...

Kay I. Ohshima; Sohey Nihashi

2005-02-01T23:59:59.000Z

195

AirIceOcean Momentum Exchange. Part 1:Energy Transfer between Waves and Ice Floes  

Science Conference Proceedings (OSTI)

The energy exchange between ocean surface waves and ice floes in the marginal ice zone (MIZ) involves the scattering and attenuation of wave energy and the excitation of oscillation modes of the ice floes, as open ocean waves propagate into the ...

W. Perrie; Y. Hu

1996-09-01T23:59:59.000Z

196

Effects of Stochastic Ice Strength Perturbation on Arctic Finite Element Sea Ice Modeling  

Science Conference Proceedings (OSTI)

The ice strength parameter P* is a key parameter in dynamic/thermodynamic sea ice models that cannot be measured directly. Stochastically perturbing P* in the Finite Element Sea IceOcean Model (FESOM) of the Alfred Wegener Institute aims at ...

Stephan Juricke; Peter Lemke; Ralph Timmermann; Thomas Rackow

2013-06-01T23:59:59.000Z

197

Recent developments in pressure coring  

SciTech Connect

The current rapid growth in the number of enhanced oil and gas recovery projects has created a strong demand for reservoir data such as true residual oil saturations. The companies providing pressure coring services have moved to fill this need. Two recent developments have emerged with the potential of significantly improving the present performance of pressure coring. Coring bits utilizing synthetic diamond cutters have demonstrated coring rates of one-foot per minute while improving core recovery. It is also apparent that cores of a near-unconsolidated nature are more easily recovered. In addition, a special low invasion fluid that is placed in the core retriever has demonstrated reduced core washing by the drilling mud and a decrease in the complexity of preparing cores for analysis. This paper describes the design, laboratory, and field testing efforts that led to these coring improvements. Also, experience in utilizing these developments while recovering over 100 cores is discussed.

McFall, A. L.

1980-01-01T23:59:59.000Z

198

The Origin of Ice in Mountain Cap Clouds  

Science Conference Proceedings (OSTI)

Ice crystal development in relatively simple layer clouds was studied using airborne instrumentation. The patterns in the development of ice in those clouds suggest that the ice originates in association with the initial condensation process, ...

William A. Cooper; Gabor Vali

1981-06-01T23:59:59.000Z

199

The Origin and Concentration of Ice Crystals in Clouds  

Science Conference Proceedings (OSTI)

Ice crystals in supercooled clouds may form upon ice nuclei, or they may arise through secondary processes. Two of these secondary ice multiplication mechanisms are discussed in some detail: the rime-splintering process and the mechanical ...

S. C. Mossop

1985-03-01T23:59:59.000Z

200

A Novel and Low Cost Sea Ice Mass Balance Buoy.  

Science Conference Proceedings (OSTI)

The understanding of sea ice mass balance processes requires continuous monitoring of the seasonal evolution of the ice thickness. While autonomous ice mass balance buoys (IMB buoys) deployed over the past two decades have contributed to our ...

Keith Jackson; Jeremy Wilkinson; Ted Maksym; Justin Beckers; Christian Haas; David Meldrum; David Mackenzie

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Black carbon aerosols and the third polar ice cap  

E-Print Network (OSTI)

EASE-Grid weekly snow cover and sea ice extent version 3.USA, National Snow and Ice Data Center, Digital media, 2005.climate forcing via snow and ice albedos, Proc. Natl. Acad.

Menon, Surabi

2010-01-01T23:59:59.000Z

202

Transporting & Shipping Hazardous Materials at LBNL: Dry Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Dry Ice Dry ice is regulated as a hazardous material if shipped by air or water. Contact Shipping for any shipments that include dry ice (x5094, x4388, or shipping@lbl.gov)....

203

A Bulk Microphysics Parameterization with Multiple Ice Precipitation Categories  

Science Conference Proceedings (OSTI)

A single-moment bulk microphysics scheme with multiple ice precipitation categories is described. It has 2 liquid hydrometeor categories (cloud droplets and rain) and 10 ice categories that are characterized by habit, size, and densitytwo ice ...

Jerry M. Straka; Edward R. Mansell

2005-04-01T23:59:59.000Z

204

Bio-based Deicing/Anti-Icing Fluids  

This invention relates in general to compositions to remove ice, snow and/or frost ("frozen precipitation") from surfaces and/or to prevent ice from forming on surfaces, and in particular to deicing/anti-icing fluids.

205

A Heat Balance for the Bering Sea Ice Edge  

Science Conference Proceedings (OSTI)

Detailed oceanographic, meteorological and sea ice observations were obtained from the Bering Sea marginal ice zone (MIZ) during the FebruaryMarch 1983 Marginal Ice Zone Experiment (MIZEX West). These data have been used in estimating a mean ...

Peter J. Hendricks; Robin D. Muench; Gilbert R. Stegen

1985-12-01T23:59:59.000Z

206

Atmospheric Icing Climatologies of Two New England Mountains  

Science Conference Proceedings (OSTI)

The atmospheric icing climatologies of two New England mountaintops with different elevations are compared: Mount Mansfield in northern Vermont and Mount Washington in New Hampshire. Atmospheric icing, as measured with Rosemount ice detectors, is ...

Charles C. Ryerson

1988-11-01T23:59:59.000Z

207

ADWICE: Advanced Diagnosis and Warning System for Aircraft Icing Environments  

Science Conference Proceedings (OSTI)

This paper describes the design of the Advanced Diagnosis and Warning System for Aircraft Icing Environments (ADWICE) and presents results for two different icing weather situations with typical icing conditions. ADWICE has been in development ...

A. Tafferner; T. Hauf; C. Leifeld; T. Hafner; H. Leykauf; U. Voigt

2003-04-01T23:59:59.000Z

208

"Modern" Coal Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

"Modern" Coal Plants "Modern" Coal Plants Nature Bulletin No. 331-A February 7, 1969 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation "MODERN" COAL PLANTS The Age of Cycads, when those strange tree-like plants predominated, began during the Triassic Period of the earth's geological history, reached its peak during the 60 million years of the Jurassic Period which followed, and ended during the first part of the Cretaceous Period that began about 95 million years ago. During the Jurassic, in addition to Cycades, there were also many species of ginkgos, and conifers which were the ancestors of our modern sequoias and pines. The ginkgo or "Maidenhair Tree", which we have imported from China and Japan, is the only one remaining of that tribe -- "a living fossil".

209

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

An Emerging Option An Emerging Option Joe Miller - Modern Grid Team IRPS Conference December 10, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 2 Agenda What is it? Where's the value? What does it mean for consumers? Some current activities Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 3 What is the role of the MGS? Define a vision for the Modern Grid Reach out to stakeholders for input Assist in the identification of benefits and barriers Facilitate resolution of issues Promote testing of integrated suites of technologies Communicate and educate stakeholders

210

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Smart Grid - What's so Smart About It? Smart Grid - What's so Smart About It? An Educational Forum on Smart Grids Joe Miller - Modern Grid Strategy Team June 24, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability 2 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 2 Agenda What is the Smart Grid? EISA 2007 Highlights DOE Activities Questions MODERN GRID S T R A T E G Y What is the Smart Grid? 4 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 4 What is the role of the MGS? Develop a vision for the Smart Grid Reach out to stakeholders to get input Assist in the identification and resolution of barriers &

211

Heat Death in Ancient and Modern Thermodynamics  

Science Conference Proceedings (OSTI)

The notion of Heat Death proves to be very useful for the understanding of the behaviour and evolutionary features of various thermodynamic systems. It is closely related to the problems that motivated the birth of modern thermodynamics, but these problems ...

Gbor Kutrovtz

2001-12-01T23:59:59.000Z

212

Demonstrating Modernism: Richard Neutra's Early Model Houses  

E-Print Network (OSTI)

Volker. Ernst L. Freud, Architect: The Case of the ModernKathleen, Erich Mendelsohn: Architect 1887-1953 (New York:In collaboration with architect Peter Pfisterer in the

Peltakian, Danielle

2012-01-01T23:59:59.000Z

213

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

What is the Smart Grid? Illinois Smart Grid Initiative Joe Miller - Modern Grid Strategy Team June 3, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the...

214

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

"A little revolution now and then is a good thing." - Thomas Jefferson, 1787 Smart Grid video Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y...

215

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Revolution? ACI Revolutionizing the Smart Grid Presented by Steve Pullins, Modern Grid Team May 2009 1 Funded by the U.S. Department of Energy, Office of Electricity Delivery and...

216

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Smart Grid - What's so Smart About It? An Educational Forum on Smart Grids Joe Miller - Modern Grid Strategy Team June 24, 2008 1 Conducted by the National Energy Technology...

217

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

and Energy Reliability MODERN GRID S T R A T E G Y Agenda Understanding the Smart Grid How do we get there? Is it a "good deal"? Some technical challenges? Some current...

218

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Barriers to Smart Grid Implementation - Is There Light at the End of the Tunnel? Utility Field Service Conference Steve Pullins - Modern Grid Team May 29, 2008 1 Conducted by the...

219

Modern Shale Gas Development in the United States: A Primer ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Modern Shale Gas Development in the United States: A Primer Modern Shale Gas Development in the United States: A Primer This Primer on Modern Shale Gas Development in the United...

220

AO Core Competency Worksheet  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

AO Core Competency Worksheet AO Core Competency Worksheet 1 DOE CYBER SECURITY EBK: CORE COMPETENCY TRAINING REQUIREMENTS Key Cyber Security Role: Authorizing Official (AO) Role Definition: The AO is the Senior DOE Management Federal official with the authority to formally assume responsibility and be held fully accountable for operating an information system at an acceptable level of risk. Competency Area: Incident Management Functional Requirement: Manage Competency Definition: Refers to the knowledge and understanding of the processes and procedures required to prevent, detect, investigate, contain, eradicate, and recover from incidents that impact the organizational mission as directed by the DOE Cyber Incident Response Capability (CIRC). Behavioral Outcome: Individuals fulfilling the role of AO will have a working knowledge of policies

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

2000 BTS Core Databook  

Buildings Energy Data Book (EERE)

0 BTS CORE DATABOOK 0 BTS CORE DATABOOK 2000 BTS CORE DATABOOK OFFICE OF ENERGY EFFICIENCY AND RENEWABLE ENERGY * U.S. DEPARTMENT OF ENERGY This version is dated: August 7, 2000 DISCLAIMER This document was designed for the internal use of the United States Department of Energy. This document was also designed to be occasionally updated and, therefore, this copy may not reflect the most current version. This document was prepared as account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that

222

Earth's Core Hottest Layer  

NLE Websites -- All DOE Office Websites (Extended Search)

Earth's Core Hottest Layer Earth's Core Hottest Layer Name: Alfred Status: Grade: 6-8 Location: FL Country: USA Date: Spring 2011 Question: Why is the inner core the hottest layer? How is that possible? Replies: There are two factors causing the center of the Earth hotter than various layers of the Earth's. First, the more dense is the layer. The denser layer, the hotter it will be. In addition, the source of the heating is due to heat produced by nuclear decay. These substances tend to be more dense than lower dense substances. So the source of heat (temperature) is higher, the greater will be the temperature. Having said all that, the reasons are rather more complicated in the "real" Earth. If the inner layers were less dense they would rise (bubble) to the "surface" leaving the inner layers more dense and thus hotter layers.

223

CORE SATURATION BLOCKING OSCILLATOR  

DOE Patents (OSTI)

A blocking oscillator which relies on core saturation regulation to control the output pulse width is described. In this arrangement an external magnetic loop is provided in which a saturable portion forms the core of a feedback transformer used with the thermionic or semi-conductor active element. A first stationary magnetic loop establishes a level of flux through the saturation portion of the loop. A second adjustable magnet moves the flux level to select a saturation point giving the desired output pulse width. (AEC)

Spinrad, R.J.

1961-10-17T23:59:59.000Z

224

Intercomparison of In-Flight Icing Algorithms. Part I: WISP94 Real-Time Icing Prediction and Evaluation Program  

Science Conference Proceedings (OSTI)

The purpose of the Federal Aviation Administrations Icing Forecasting Improvement Program is to conduct research on icing conditions both in flight and on the ground. This paper describes a portion of the in-flight aircraft icing prediction ...

Gregory Thompson; Roelof T. Bruintjes; Barbara G. Brown; Frank Hage

1997-12-01T23:59:59.000Z

225

Assessment of Superstructure Ice Protection as Applied to Offshore Oil Operations Safety Ice Protection Technologies, Safety Enhancements, and Development Needs  

E-Print Network (OSTI)

Approved for public release; distribution is unlimited. COVER: Ice protection technologiesclockwise from upper left (reprinted with permission): 1. Feltwick Anti-Icing Grate from Innovative Dynamics Inc. 2. Ocean Bounty semi-submersible iced in Cook Inlet

Charles C. Ryerson April; Vacca Heater From Vacca Inc; Charles C. Ryerson

2009-01-01T23:59:59.000Z

226

under a Creative Commons License. Climate of the Past Modelling the Early Weichselian Eurasian Ice Sheets: role of ice  

E-Print Network (OSTI)

Abstract. During the last glaciation, a marine ice sheet repeatedly appeared in Eurasia. The floating part of this ice sheet was essential to its rapid extension over the seas. During the earliest stage (90 kyr BP), large ice-dammed lakes formed south of the ice sheet. These lakes are believed to have cooled the climate at the margin of the ice. Using an ice sheet model, we investigated the role of ice shelves during the inception and the influence of ice-dammed lakes on the ice sheet evolution. Inception in Barents sea seems due to thickening of a large ice shelf. We observe a substantial impact of the lakes on the evolution of the ice sheets. Reduced summer ablation enhances ice extent and thickness, and the deglaciation is delayed by 2000 years. 1

V. Peyaud; C. Ritz; G. Krinner

2007-01-01T23:59:59.000Z

227

A Parameterization of the Visible Extinction Coefficient of Ice Clouds in Terms of the Ice/Water Content  

Science Conference Proceedings (OSTI)

This article describes a parameterization of the visible extinction coefficient of cirrus and frontal ice cloud in terms of the ice/water content. The parameterization is based on the discovery that the ice cloud particle size spectra from a ...

C. Martin R. Platt

1997-08-01T23:59:59.000Z

228

Hopper Multi-Core FAQ  

NLE Websites -- All DOE Office Websites (Extended Search)

Hopper Multi-Core FAQ Hopper Multi-Core FAQ Hopper Multi-Core FAQ Q. How is Hopper Different than Franklin? A. The new Hopper Phase-II system will have 24 cores per node. Franklin had only four. Q. What else is different? A. There is less memory per core. Hopper has 1.3 GB / core rather than 2.0 GB / core on Franklin. A code using MPI on Hopper may be more likely to exhaust available memory, causing an error. Additionally, Hopper's memory hierarchy is "deeper" and more non-uniform than Franklin's and this can have a big impact on performance in certain cases. Hopper's 24 cores per node are implemented on two sockets, each containing two six-core dies (see the image below). Each of the six-core dies has direct access to one-quarter of the node's total memory. Thus,

229

Department of Energy Quadrennial Technology Review Grid Modernization...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Grid Modernization Workshop Department of Energy Quadrennial Technology Review Grid Modernization Workshop Public release of the documents and presentations shared during the grid...

230

Modern Records of Carbon and Oxygen Isotopes in Atmospheric Carbon...  

NLE Websites -- All DOE Office Websites (Extended Search)

Modern Records of Carbon and Oxygen Isotopes in Atmospheric Carbon Dioxide and Carbon-13 in Methane Modern Records of Carbon and Oxygen Isotopes in Atmospheric Carbon Dioxide and...

231

The Particle Adventure | How do we interpret our data? | Modern...  

NLE Websites -- All DOE Office Websites (Extended Search)

Accelerators and particle detectors - How do we interpret our data? - Modern detectors Modern detectors consist of many different pieces of equipment which test for different...

232

Modern Shale Gas Development in the United States: A Primer ...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Field Sites Power Marketing Administration Other Agencies You are here Home Modern Shale Gas Development in the United States: A Primer Modern Shale Gas Development in the...

233

Control and regulation of modern distribution system, ForskEL...  

Open Energy Info (EERE)

and regulation of modern distribution system, ForskEL (Smart Grid Project) Jump to: navigation, search Project Name Control and regulation of modern distribution system, ForskEL...

234

Chairs: Ice, Ishikawa, Khounsary, Padmore, Shen Topic Speaker  

NLE Websites -- All DOE Office Websites (Extended Search)

Chairs: Ice, Ishikawa, Khounsary, Padmore, Shen Topic Speaker Affiliation Session 1 8:30-10 Chair: G. Ice Maskless patterning Enzo Di Fabrizo Elettra, Trieste, Italy Possible...

235

ICE Press Office U.S. Department of Homeland Security  

E-Print Network (OSTI)

ICE Press Office U.S. Department of Homeland Security December 19, 2003 Contact: SEVP Fact Sheet) at (202) 353-3049. www.ice.gov #12;

Wisconsin at Madison, University of

236

SISIPHUS: Scalable Ice-Sheet Solvers and Infrastructure for Petascale...  

NLE Websites -- All DOE Office Websites (Extended Search)

SISIPHUS: Scalable Ice-Sheet Solvers and Infrastructure for Petascale, High-Resolution, Unstructured Simulations SISIPHUS: Scalable Ice-Sheet Solvers and Infrastructure for...

237

ICR-ICE Standard Operating Procedures (Update Sept 2013) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ICR-ICE Standard Operating Procedures (Update Sept 2013) ICR-ICE Standard Operating Procedures (Update Sept 2013) ICRICE SOPSep 2013Final.pdf More Documents & Publications...

238

Laparoscopic Partial Nephrectomy with Ice Slurry as Coolant in...  

NLE Websites -- All DOE Office Websites (Extended Search)

| Help | PrivacySecurity Notice Home > Capabilities > Biomedical Applications > Medical Ice Slurry Coolants > Laparoscopic Partial Nephrectomy with Ice Slurry as Coolant in the...

239

Observing Climate with Satellites Are We on Thin Ice?  

Science Conference Proceedings (OSTI)

Observing Climate with Satellites Are We on Thin Ice? A glacial-melt stream on the top of the Greenland ice sheet in late summer. ...

2010-10-05T23:59:59.000Z

240

Ice hockey instructor's guide for EC Dornbirner Bulldogs.  

E-Print Network (OSTI)

??The purpose of this thesis was to build an ice hockey instructors manual for Austrian ice hockey club EC Dornbirner Bulldogs. The manual consists of (more)

Suomalainen, Juhani

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Maintenance of the Sea-Ice Edge  

Science Conference Proceedings (OSTI)

A coupled global climate model is used to evaluate processes that determine the equilibrium location of the sea-ice edge and its climatological annual cycle. The extent to which the wintertime ice edge departs from a symmetric ring around either ...

C. M. Bitz; M. M. Holland; E. C. Hunke; R. E. Moritz

2005-08-01T23:59:59.000Z

242

Ice Fall Doctors 6, Long Conversation  

E-Print Network (OSTI)

Ang Nima and Ang Kami discuss different elements of their lives as Ice Fall Doctors: what they like about the job; safety; what their wives think of the work; religion and how it keeps them safe in the ice; spirits in the Icefall and the surrounding...

Loomis, Molly

243

Passive ice freezing-releasing heat pipe  

DOE Patents (OSTI)

A heat pipe device has been developed which permits completely passive ice formation and periodic release of ice without requiring the ambient temperature to rise above the melting point of water. This passive design enables the maximum amount of cooling capacity to be stored in the tank.

Gorski, Anthony J. (Lemont, IL); Schertz, William W. (Batavia, IL)

1982-01-01T23:59:59.000Z

244

Modeling Linear Kinematic Features in Sea Ice  

Science Conference Proceedings (OSTI)

Sea ice deformation is localized in narrow zones of high strain rate that extend hundreds of kilometers, for example, across the Arctic Basin. This paper demonstrates that these failure zones may be modeled with a viscousplastic sea ice model, ...

Jennifer K. Hutchings; Petra Heil; William D. Hibler III

2005-12-01T23:59:59.000Z

245

The influence of ice nucleation mode and ice vapor growth on simulation of  

NLE Websites -- All DOE Office Websites (Extended Search)

The influence of ice nucleation mode and ice vapor growth on simulation of The influence of ice nucleation mode and ice vapor growth on simulation of arctic mixed-phase clouds Avramov, Alexander The Pennsylvania State University Category: Modeling Mixed-phase arctic stratus clouds are the predominant cloud type in the Arctic . Perhaps one of the most intriguing of their features is that they tend to have liquid tops that precipitate ice. Despite the fact that this situation is colloidally unstable, these cloud systems are quite long lived - from a few days to over a couple of weeks. Previous studies have suggested that this longevity may be due to a paucity of ice nucleating aerosols (ice nuclei, or IN) in the Arctic. Such studies have shown that small changes in IN concentrations can cause large changes in the amount of liquid water within a mixed-phase stratus deck. We use the Regional

246

ARM - PI Product - Large Scale Ice Water Path and 3-D Ice Water Content  

NLE Websites -- All DOE Office Websites (Extended Search)

ProductsLarge Scale Ice Water Path and 3-D Ice Water ProductsLarge Scale Ice Water Path and 3-D Ice Water Content Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Large Scale Ice Water Path and 3-D Ice Water Content Site(s) SGP TWP General Description Cloud ice water concentration is one of the most important, yet poorly observed, cloud properties. Developing physical parameterizations used in general circulation models through single-column modeling is one of the key foci of the ARM program. In addition to the vertical profiles of temperature, water vapor and condensed water at the model grids, large-scale horizontal advective tendencies of these variables are also required as forcing terms in the single-column models. Observed horizontal advection of condensed water has not been available because the

247

Magnetic Monopoles in Spin Ice  

E-Print Network (OSTI)

Electrically charged particles, such as the electron, are ubiquitous. By contrast, no elementary particles with a net magnetic charge have ever been observed, despite intensive and prolonged searches. We pursue an alternative strategy, namely that of realising them not as elementary but rather as emergent particles, i.e., as manifestations of the correlations present in a strongly interacting many-body system. The most prominent examples of emergent quasiparticles are the ones with fractional electric charge e/3 in quantum Hall physics. Here we show that magnetic monopoles do emerge in a class of exotic magnets known collectively as spin ice: the dipole moment of the underlying electronic degrees of freedom fractionalises into monopoles. This enables us to account for a mysterious phase transition observed experimentally in spin ice in a magnetic field, which is a liquid-gas transition of the magnetic monopoles. These monopoles can also be detected by other means, e.g., in an experiment modelled after the celebrated Stanford magnetic monopole search.

Claudio Castelnovo; Roderich Moessner; Shivaji L. Sondhi

2007-10-30T23:59:59.000Z

248

Recovery mechanisms of Arctic summer sea ice  

E-Print Network (OSTI)

[1] We examine the recovery of Arctic sea ice from prescribed ice?free summer conditions in simulations of 21st century climate in an atmosphereocean general circulation model. We find that ice extent recovers typically within two years. The excess oceanic heat that had built up during the ice?free summer is rapidly returned to the atmosphere during the following autumn and winter, and then leaves the Arctic partly through increased longwave emission at the top of the atmosphere and partly through reduced atmospheric heat advection from lower latitudes. Oceanic heat transport does not contribute significantly to the loss of the excess heat. Our results suggest that anomalous loss of Arctic sea ice during asinglesummerisreversible,astheicealbedo feedback is alleviated by large?scale recovery mechanisms. Hence, hysteretic threshold behavior (or a tipping point) is unlikely to occur during the decline of Arctic summer sea?

unknown authors

2011-01-01T23:59:59.000Z

249

Parameterizing Size Distribution in Ice Clouds  

SciTech Connect

PARAMETERIZING SIZE DISTRIBUTIONS IN ICE CLOUDS David L. Mitchell and Daniel H. DeSlover ABSTRACT An outstanding problem that contributes considerable uncertainty to Global Climate Model (GCM) predictions of future climate is the characterization of ice particle sizes in cirrus clouds. Recent parameterizations of ice cloud effective diameter differ by a factor of three, which, for overcast conditions, often translate to changes in outgoing longwave radiation (OLR) of 55 W m-2 or more. Much of this uncertainty in cirrus particle sizes is related to the problem of ice particle shattering during in situ sampling of the ice particle size distribution (PSD). Ice particles often shatter into many smaller ice fragments upon collision with the rim of the probe inlet tube. These small ice artifacts are counted as real ice crystals, resulting in anomalously high concentrations of small ice crystals (D < 100 m) and underestimates of the mean and effective size of the PSD. Half of the cirrus cloud optical depth calculated from these in situ measurements can be due to this shattering phenomenon. Another challenge is the determination of ice and liquid water amounts in mixed phase clouds. Mixed phase clouds in the Arctic contain mostly liquid water, and the presence of ice is important for determining their lifecycle. Colder high clouds between -20 and -36 oC may also be mixed phase but in this case their condensate is mostly ice with low levels of liquid water. Rather than affecting their lifecycle, the presence of liquid dramatically affects the cloud optical properties, which affects cloud-climate feedback processes in GCMs. This project has made advancements in solving both of these problems. Regarding the first problem, PSD in ice clouds are uncertain due to the inability to reliably measure the concentrations of the smallest crystals (D < 100 m), known as the small mode. Rather than using in situ probe measurements aboard aircraft, we employed a treatment of ice cloud optical properties formulated in terms of PSD parameters in combination with remote measurements of thermal radiances to characterize the small mode. This is possible since the absorption efficiency (Qabs) of small mode crystals is larger at 12 m wavelength relative to 11 m wavelength due to the process of wave resonance or photon tunneling more active at 12 m. This makes the 12/11 m absorption optical depth ratio (or equivalently the 12/11 m Qabs ratio) a means for detecting the relative concentration of small ice particles in cirrus. Using this principle, this project tested and developed PSD schemes that can help characterize cirrus clouds at each of the three ARM sites: SGP, NSA and TWP. This was the main effort of this project. These PSD schemes and ice sedimentation velocities predicted from them have been used to test the new cirrus microphysics parameterization in the GCM known as the Community Climate Systems Model (CCSM) as part of an ongoing collaboration with NCAR. Regarding the second problem, we developed and did preliminary testing on a passive thermal method for retrieving the total water path (TWP) of Arctic mixed phase clouds where TWPs are often in the range of 20 to 130 g m-2 (difficult for microwave radiometers to accurately measure). We also developed a new radar method for retrieving the cloud ice water content (IWC), which can be vertically integrated to yield the ice water path (IWP). These techniques were combined to determine the IWP and liquid water path (LWP) in Arctic clouds, and hence the fraction of ice and liquid water. We have tested this approach using a case study from the ARM field campaign called M-PACE (Mixed-Phase Arctic Cloud Experiment). This research led to a new satellite remote sensing method that appears promising for detecting low levels of liquid water in high clouds typically between -20 and -36 oC. We hope to develop this method in future research.

DeSlover, Daniel; Mitchell, David L.

2009-09-25T23:59:59.000Z

250

SECA Core Technology Program  

NLE Websites -- All DOE Office Websites (Extended Search)

January 27 - January 27 - 28, 2005 Workshop Peer Review Rating Results Summary Donald Collins SECA Core January 2005 Workshop Peer Review Summary - DWC,PM-30,3-10-05 2 of 21 Review Process Summary * Core Technology Project Presentations - Project Objectives & Results - Non-proprietary Information - Industry, National Lab & University Participation * Verbal & Written Constructive Comments - Written Comments on Peer Review Forms - Industry Verbal Feedback at Workshop * Core Participant Review & Reply to Comments - Reply to Comment Issues * DOE NETL Redirect Projects as Needed M a t e r i a l s C o n t r o l s & D i a g n o s t i c s P o w e r E le c t r o n ic s F u e l P r o c e s s i n g Manufacturing M o d e li n g & S im u la ti o n SECA Core January 2005 Workshop Peer Review Summary - DWC,PM-30,3-10-05 3 of 21 Peer Review Questions

251

SECA Core Technology Program  

NLE Websites -- All DOE Office Websites (Extended Search)

May 12 - May 12 - 13, 2004 Workshop Peer Review Rating Results Summary Donald Collins SECA Core May 2004 Workshop Peer Review Summary - DWC,PM-30,5-21-04 2 of 16 Review Process Summary * Core Technology Project Presentations - Project Objectives & Results - Non-proprietary Information - Industry, National Lab & University Participation * Verbal & Written Constructive Comments - Written Comments on Peer Review Forms - Industry Verbal Feedback at Workshop * Core Participant Review & Reply to Comments - Reply to Comment Issues * DOE NETL Redirect Projects as Needed M a t e r i a l s C o n t r o l s & D i a g n o s t i c s P o w e r E le c t r o n ic s F u e l P r o c e s s i n g Manufacturing M o d e li n g & S im u la ti o n SECA Core May 2004 Workshop Peer Review Summary - DWC,PM-30,5-21-04 3 of 16 Peer Review Questions

252

Wind Turbines Under Atmospheric Icing Conditions - Ice Accretion Modeling, Aerodynamics, and Control Strategies for Mitigating Performance Degradation.  

E-Print Network (OSTI)

??This thesis presents a combined engineering methodology of ice accretion, airfoil data, and rotor performance analysis of wind turbines subject to moderate atmospheric icing conditions. (more)

Brillembourg, Dwight

2013-01-01T23:59:59.000Z

253

Energy Cost Calculator for Commercial Ice Machines | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ice Machines Ice Machines Energy Cost Calculator for Commercial Ice Machines October 8, 2013 - 2:25pm Addthis Vary capacity size, energy cost, hours of operation, and /or efficiency level. INPUT SECTION Input the following data (if any parameter is missing, calculator will set to default value). Defaults Type of Ice Cube Machine Ice Making Head Self-Contained Remote Condensing Unit Ice Making Head Type of Condenser Air Cooled Water Cooled Air Cooled Ice Harvest Rate (lbs. ice per 24 hrs.) lbs. per 24 hrs. 500 lbs. per 24 hrs. Energy Consumption (per 100 lbs. of ice) kWh 5.5 kWh Quantity of ice machines to be purchased 1 Energy Cost $/kWh 0.06 $/kWh Annual Hours of Operation hrs. 3000 hrs. Calculate Reset OUTPUT SECTION Performance per Ice Cube Machine Your

254

Determining Greenland Ice Sheet sensitivity to regional climate change: one-way coupling of a 3-D thermo-mechanical ice sheet model with a mesoscale climate model  

E-Print Network (OSTI)

responsible almost 40% of the ice sheets total dischargeCurrently, no coupled Greenland Ice Sheet model experimentaccelerated melting of Greenland ice sheet, Science, v. 313,

Schlegel, Nicole-Jeanne

2011-01-01T23:59:59.000Z

255

A Review of Radionuclide Release From HTGR Cores During Normal Operation  

Science Conference Proceedings (OSTI)

The release of radionuclides from the core of high-temperature gas-cooled reactors (HTGRs) -- especially direct-cycle HTGRs -- during normal plant operation has significant design, O&M, and safety implications. A hallmark philosophy of all modern HTGRs is to design the plant so that radionuclides are retained in the core during normal operation and postulated accidents. The key to achieving this safety goal is twofold: (1) a reliance on ceramic-coated fuel particles for primary fission product containmen...

2004-03-04T23:59:59.000Z

256

Solar Cycle Variations in Ice Acidity at the End of the Last Ice Age: Possible Marker of a Climatically Significant Interstellar Dust Incursion  

E-Print Network (OSTI)

Hammer et al. [1997] report the presence of regularly spaced acidity peaks (H+, F-, Cl-) in the Byrd Station, Antarctica ice core. The event has a duration of about one century and falls at the beginning of the deglacial warming. Volcanism appears to be an unlikely cause since the total acid deposition of this event was about 18 fold greater than the largest known volcanic eruption, and since volcanic eruptions are not known to recur with such regularity. We show that the recurrence period of these peaks averages to 11.5 +/- 2.4 years, which approximates the solar cycle period, and suggest that this feature may have an extraterrestrial origin. We propose that this material may mark a period of enhanced interstellar dust and gas influx modulated by the solar cycle. The presence of this material could have made the Sun more active and have been responsible for initiating the warming that ended the last ice age.

Paul LaViolette

2005-02-04T23:59:59.000Z

257

Solar Cycle Variations in Ice Acidity at the End of the Last Ice Age Possible Marker of a Climatically Significant Interstellar Dust Incursion  

E-Print Network (OSTI)

Hammer et al. [1997] report the presence of regularly spaced acidity peaks (H+, F-, Cl-) in the Byrd Station, Antarctica ice core. The event has a duration of about one century and falls at the beginning of the deglacial warming. Volcanism appears to be an unlikely cause since the total acid deposition of this event was about 18 fold greater than the largest known volcanic eruption, and since volcanic eruptions are not known to recur with such regularity. We show that the recurrence period of these peaks averages to 11.5 +/- 2.4 years, which approximates the solar cycle period, and suggest that this feature may have an extraterrestrial origin. We propose that this material may mark a period of enhanced interstellar dust and gas influx modulated by the solar cycle. The presence of this material could have made the Sun more active and have been responsible for initiating the warming that ended the last ice age.

LaViolette, P A

2005-01-01T23:59:59.000Z

258

LABORATORY IR STUDIES AND ASTROPHYSICAL IMPLICATIONS OF C{sub 2}H{sub 2}-CONTAINING BINARY ICES  

SciTech Connect

Studies of molecular hot cores and protostellar environments have shown that the observed abundance of gas-phase acetylene (C{sub 2}H{sub 2}) cannot be matched by chemical models without the inclusion of C{sub 2}H{sub 2} molecules subliming from icy grain mantles. Searches for infrared (IR) spectral features of solid-phase acetylene are under way, but few laboratory reference spectra of C{sub 2}H{sub 2} in icy mixtures, which are needed for spectral fits to observational data, have been published. Here, we report a systematic study of the IR spectra of condensed-phase pure acetylene and acetylene in ices dominated by carbon monoxide (CO), carbon dioxide (CO{sub 2}), methane (CH{sub 4}), and water (H{sub 2}O). We present new spectral data for these ices, including band positions and intrinsic band strengths. For each ice mixture and concentration, we also explore the dependence of acetylene's {nu}{sub 5}-band position (743 cm{sup -1}, 13.46 {mu}m) and FWHM on temperature. Our results show that the {nu}{sub 5} feature is much more cleanly resolved in ices dominated by non-polar and low-polarity molecules, specifically CO, CO{sub 2}, and CH{sub 4}, than in mixtures dominated by H{sub 2}O-ice. We compare our laboratory ice spectra with observations of a quiescent region in Serpens.

Knez, C. [Astronomy Department, University of Maryland, College Park, MD 20742 (United States); Moore, M. H.; Hudson, R. L. [NASA Goddard Space Flight Center, Astrochemistry Laboratory, Greenbelt, MD 20771 (United States); Ferrante, R. F., E-mail: Claudia.Knez@jhuapl.edu [Chemistry Department, U.S. Naval Academy, 572 Holloway Road, Annapolis, MD 21402 (United States)

2012-04-01T23:59:59.000Z

259

Microparticulate ICE slurry for renal hypothermia: laparoscopic partial nephrectomy in a porcine model.  

SciTech Connect

Previously, we described the feasibility of renal hypothermia using microparticulate ice slurry during laparoscopy. In the present study, we compared surface cooling with the ice slurry versus near-frozen saline or warm ischemia (WI) during laparoscopic partial nephrectomy (LPN) in a porcine model. We used a single-kidney porcine model. Animals in 5 equal groups (n = 6 each) underwent right laparoscopic complete nephrectomy. In Phase I, left LPN was performed under 90 minutes of ischemia and 90-minute renal cooling with either slurry (Slurry group 1) or saline (Saline group 1). No cooling was applied in the WI group. In Phase II, to simulate more extreme condition, ischemia time was extended to 120 minutes and cooling shortened to 10 minutes (Slurry group 2 and Saline group 2). The study endpoints were renal and core temperature during the surgery and serum creatinine at baseline and days 1, 3, 7, and 14 after the procedure. The ice slurry was easily produced and delivered. Nadir renal temperature (mean {+-} SD) was 8 {+-} 4 C in Slurry group 1 vs. 22.5 {+-} 3 C in Saline group 1 (P < .0001). Renal rewarming to 30 C occurred after 61 {+-} 7 minutes in Slurry group 2 vs. 24 {+-} 6 minutes in Saline group 2 (P < .0001). Core temperature decreased on average to 35 C in the Saline groups compared with 37 C in the Slurry groups (P < .0001). Serum creatinine did not differ between the Saline and Slurry groups in Phases I and II at any time point. Ice slurry provides superior renal cooling compared with near-frozen saline during LPN without associated core hypothermia.

Shikanov, S; Wille, M; Large, M; Razmaria, A; Lifshitz, D; Chang, A; Wu, Y; Kasza, K; Shalhav, A (Nuclear Engineering Division); (University of Chicago Medical Center)

2010-10-01T23:59:59.000Z

260

Chemical Characterization of Individual Particles and Residuals of Cloud Droplets and Ice Crystals Collected On Board Research Aircraft in the ISDAC 2008 Study  

Science Conference Proceedings (OSTI)

Although it has been shown that size of atmospheric particles has a direct correlation with their ability to act as cloud droplet and ice nuclei, the influence of composition of freshly emitted and aged particles in nucleation processes is poorly understood. In this work we combine data from field measurements of ice nucleation with chemical imaging of the sampled particles to link aerosol composition with ice nucleation ability. Field measurements and sampling were conducted during the Indirect and Semidirect Aerosols Campaign (ISDAC) over Barrow, Alaska, in the springtime of 2008. In-situ ice nucleation measurements were conducted using a Continuous Flow Diffusion Chamber (CFDC). Measured number concentrations of ice nuclei (IN) varied from frequent values of 0.01 per liter to more than 10 per liter. Residuals of airborne droplets and ice crystals were collected through a counterflow virtual impactor (CVI). The compositions of individual atmospheric particles and the residuals were studied using Computer Controlled Scanning Electron Microscopy with Energy Dispersive X-ray analysis (CCSEM/EDX) and Scanning Transmission X-ray Microscopy coupled with Near Edge X-ray Absorption Fine Structure spectroscopy (STXM/NEXAFS). Chemical analysis of cloud particle residuals collected during an episode of high ice nucleation suggests that both size and composition may influence aerosol's ability to act as IN. The STXM/NEXAFS chemical composition maps of individual residuals have characteristic structures of either inorganic or black carbon cores coated by organic materials. In a separate flight, particle samples from a biomass burning plume were collected. Although it has previously been suggested that episodes of biomass burning contribute to increased numbers of highly effective ice nuclei, in this episode we observed that only a small fraction were effective ice nuclei. Most of the particles from the biomass plume episode were smaller in size and were composed of homogeneous organic material without identifiable cores.

Hiranuma, Naruki; Brooks, Sarah D.; Moffet, Ryan C.; Glen, Andrew; Laskin, Alexander; Gilles, Marry K.; Liu, Peter; MacDonald, A. M.; Strapp, J. Walter; McFarquhar, Greg

2013-06-24T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Modern Methods for Lipid AnalysisChapter 1 Atmospheric Pressure Ionization Techniques in Modern Lipid Analysis  

Science Conference Proceedings (OSTI)

Modern Methods for Lipid Analysis Chapter 1 Atmospheric Pressure Ionization Techniques in Modern Lipid Analysis Health Nutrition Biochemistry eChapters Methods - Analyses Books AOCS Press 2F9B8A831F53D269EADF2AB8911EFA88 AOCS Pr

262

Core Holes | Open Energy Information  

Open Energy Info (EERE)

Core Holes Core Holes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Core Holes Details Activities (8) Areas (7) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Drilling Techniques Exploration Sub Group: Exploration Drilling Parent Exploration Technique: Exploration Drilling Information Provided by Technique Lithology: Core holes are drilled to identify lithology and mineralization Stratigraphic/Structural: Retrieved samples can be used to identify fracture networks or faults Hydrological: Thermal: Thermal conductivity measurements can be done on retrieved samples. Dictionary.png Core Holes: A core hole is a well that is drilled using a hallow drill bit coated with synthetic diamonds for the purposes of extracting whole rock samples from

263

The Universe Adventure - The Modern Universe  

NLE Websites -- All DOE Office Websites (Extended Search)

Modern Universe Modern Universe Like astronomers throughout history, modern cosmologists are interested in making an accurate model of the Universe. Starting with the laws of physics which explain how fundamental particles and forces interact, physicists derive general equations describing the evolution of the Universe's structure. Cosmologists use experimental evidence to select a set of initial conditions enabling them to solve the general equations, and calculate the state of the Universe at times in the past, present, or future. This generates a possible model, which can be tested by comparing the phenomena it predicts with observational data. In this manner, following the rigorous scientific method, cosmologists work to build a successful Universal model. In the next section we will examine evidence for the current Big Bang

264

Modern Electric Water Company | Open Energy Information  

Open Energy Info (EERE)

Modern Electric Water Company Modern Electric Water Company Jump to: navigation, search Name Modern Electric Water Company Place Washington Utility Id 12744 Utility Location Yes Ownership C NERC Location WECC NERC WECC Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png COMMERCIAL - SCHEDULE 30 Industrial COMMERCIAL - SCHEDULE 32 Industrial RESIDENTIAL - SCHEDULE 35 Residential STREET LIGHTS 100 Watt Lighting STREET LIGHTS 200 Watt Lighting Average Rates Residential: $0.0559/kWh Commercial: $0.0551/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a"

265

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

What is the Smart Grid? What is the Smart Grid? Illinois Smart Grid Initiative Joe Miller - Modern Grid Strategy Team June 3, 2008 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability 2 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y 2 What is the role of the MGS? Define a vision for the Modern Grid Reach out to stakeholders to gain consensus Assist in the identification and resolution of barriers & issues Act as "independent broker" consistent with the vision Promote testing of integrated suites of technologies Communicate success stories to stimulate deployment Our role is Strategic rather than Tactical! 3 Office of Electricity

266

Core Measure Results  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Core Measure Core Measure Results FY 07 Results FY 08 Results FY 09 Results FY 10 Target FY 10 Customer Perspective: Customer Satisfaction: -Timeliness NM 81 NM NM NM -Quality NM 90 NM NM NM Effective Service Partnership: -Extent of Customer Satisfaction with the responsiveness, etc. NM 87 NM NM NM Internal Business Perspective: Acquisition Excellence: -Extent to which internal quality control systems are effective 86 87 84 87 88 Most Effective Use of Contracting Approaches to Maximize Efficiency and Cost Effectiveness: Use of Electronic Commerce: - % of delivery & purchase orders issued electronically as a % of total simplified actions 70 72 89 99 100 - % of new competitive transactions > $100K conducted through EC 70 72 91 100 95 Performance Based Service Contracts: - PBSCs awarded as a % of eligible new

267

Critical CRBR core pressure  

Science Conference Proceedings (OSTI)

The conditions are detailed under which gas pressure will cause or initiate failure in the structural containment of the fuel core. The Clinch River Breeder Reactor Plant is the prototype structure. Two general classes of problems have been studied, representing two entirely distinct configurations of containment failure. The first model determines the minimum pressure to lift a portion or the entire core from its containment. The second model estimates the critical pressure above which the fuel rods interior to the hexagonal fuel can warp, leading to blockage of the gas passages. Such blockage might cause further buildup of the gas pressure to a level causing the failure of the fuel rod containment in the hexagonal fuel container.

Ju, F.D.

1980-06-01T23:59:59.000Z

268

Toroidal core winder  

DOE Patents (OSTI)

The disclosure is directed to an apparatus for placing wire windings on a toroidal body, such as a transformer core, having an orifice in its center. The apparatus comprises a wire storage spool, a wire loop holding continuous belt maintained in a C-shaped loop by a belt supporting structure and provision for turning the belt to place and tighten loops of wire on a toroidal body, which is disposed within the gap of the C-shaped belt loop.

Potthoff, Clifford M. (Livermore, CA)

1978-01-01T23:59:59.000Z

269

Banded electromagnetic stator core  

DOE Patents (OSTI)

A stator core for an electromagnetic pump includes a plurality of circumferentially adjoining groups of flat laminations disposed about a common centerline axis and collectively defining a central bore and a discontinuous outer perimeter, with adjacent groups diverging radially outwardly to form V-shaped gaps. An annular band surrounds the groups and is predeterminedly tensioned to clamp together the laminations, and has a predetermined flexibility in a radial direction to form substantially straight bridge sections between the adjacent groups. 5 figures.

Fanning, A.W.; Gonzales, A.A.; Patel, M.R.; Olich, E.E.

1994-04-05T23:59:59.000Z

270

Learning to predict ice accretion on electric power lines  

Science Conference Proceedings (OSTI)

Ice accretion on power transmission and distribution lines is one of the major causes of power grid outages in northern regions. While such icing events are rare, they are very costly. Thus, it would be useful to predict how much ice will accumulate. ... Keywords: Ice accretion, Machine learning, NWP, SVM regression

Ashkan Zarnani; Petr Musilek; Xiaoyu Shi; Xiaodi Ke; Hua He; Russell Greiner

2012-04-01T23:59:59.000Z

271

Lollipops and Ice Fishing: Molecular Rulers Used to Probe ...  

Science Conference Proceedings (OSTI)

Lollipops and Ice Fishing: Molecular Rulers Used to Probe Nanopores. For Immediate Release: April 27, 2010. ...

2011-10-03T23:59:59.000Z

272

District cooling: Phase 2, Direct freeze ice slurry system testing  

DOE Green Energy (OSTI)

The objectives of this research are to: extend the range of pressure drop data for ice-water slurry flows, and design and build a prototypical ice slurry distribution system which demonstrates ice slurry handling at an end user's heat exchanger, without sending ice slurry directly through the heat exchanger. The results of Phase 1 work demonstrated a 40% reduction in pump power required to move an ice-water slurry versus the same mass flow of water only. In addition to lower pressure drop, pumping ice slurries is advantageous because of the large latent and sensible heat cooling capacity stored in the ice compared to only sensible heat in chilled water. For example, an ice-water slurry with a 20% ice fraction (by mass) has a mass flow rate that is 70% less than the mass flow rate required for a chilled water system cooling and equivalent load. The greatly reduced mass flow combined with the friction reducing effects of ice-water slurries results in a total savings of 83% in pumping power. Therefore, a substantial savings potential exists for capital costs and system operating costs in ice-water slurry district cooling systems. One potential disadvantage of an ice-slurry district cooling system is the introduction of ice into equipment not so designed, such as air handlers at end user locations. A prototypic ice slurry distribution loop will demonstrate a cooling network which will provide ice slurry to an end user but sends ice free water into the actual heat transfer.

Winters, P.J.

1991-01-02T23:59:59.000Z

273

Arctic Sea Ice Decline: Observations, Projections, Mechanisms, and Implications  

E-Print Network (OSTI)

or phase space. In this work we con- sider the trajectory of sea ice in the ice thickness phase space. We175 Arctic Sea Ice Decline: Observations, Projections, Mechanisms, and Implications Geophysical Is the Trajectory of Arctic Sea Ice? Harry L. Stern and Ronald W. Lindsay Polar Science Center, Applied Physics

Lindsay, Ron

274

Global Ice and Land Climate Studies Using Scatterometer Image Data  

E-Print Network (OSTI)

in sea ice, and canopy leaf density--as well as by the phase state of water (meltwater on sea ice1 Global Ice and Land Climate Studies Using Scatterometer Image Data David G. Long Brigham Young CA 91109 ben@pacific.jpl.nasa.gov Sasan.Saatchi@jpl.nasa.gov Cheryl Bertoia U. S. National Ice Center

Long, David G.

275

Surface Albedo of the Antarctic Sea Ice Zone  

Science Conference Proceedings (OSTI)

In three ship-based field experiments, spectral albedos were measured at ultraviolet, visible, and near-infrared wavelengths for open water, grease ice, nilas, young grey ice, young grey-white ice, and first-year ice, both with and without snow ...

Richard E. Brandt; Stephen G. Warren; Anthony P. Worby; Thomas C. Grenfell

2005-09-01T23:59:59.000Z

276

Analysis of core samples from the BPXA-DOE-USGS Mount Elbert gas hydrate stratigraphic test well: Insights into core disturbance and handling  

Science Conference Proceedings (OSTI)

Collecting and preserving undamaged core samples containing gas hydrates from depth is difficult because of the pressure and temperature changes encountered upon retrieval. Hydrate-bearing core samples were collected at the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well in February 2007. Coring was performed while using a custom oil-based drilling mud, and the cores were retrieved by a wireline. The samples were characterized and subsampled at the surface under ambient winter arctic conditions. Samples thought to be hydrate bearing were preserved either by immersion in liquid nitrogen (LN), or by storage under methane pressure at ambient arctic conditions, and later depressurized and immersed in LN. Eleven core samples from hydrate-bearing zones were scanned using x-ray computed tomography to examine core structure and homogeneity. Features observed include radial fractures, spalling-type fractures, and reduced density near the periphery. These features were induced during sample collection, handling, and preservation. Isotopic analysis of the methane from hydrate in an initially LN-preserved core and a pressure-preserved core indicate that secondary hydrate formation occurred throughout the pressurized core, whereas none occurred in the LN-preserved core, however no hydrate was found near the periphery of the LN-preserved core. To replicate some aspects of the preservation methods, natural and laboratory-made saturated porous media samples were frozen in a variety of ways, with radial fractures observed in some LN-frozen sands, and needle-like ice crystals forming in slowly frozen clay-rich sediments. Suggestions for hydrate-bearing core preservation are presented.

Kneafsey, Timothy J.; Lu, Hailong; Winters, William; Boswell, Ray; Hunter, Robert; Collett, Timothy S.

2009-09-01T23:59:59.000Z

277

The existence of memory effect on hydrogen ordering in ice: The effect makes ice attractive  

SciTech Connect

The existence of ferroelectric ice XI with ordered hydrogen in space becomes of interest in astronomy and physical chemistry because of the strong electrostatic force. However, the influence was believed to be limited because it forms in a narrow temperature range. From neutron diffraction experiments, we found that small hydrogen-ordered domains exist at significantly higher temperature and the domains induce the growth of 'bulk' ice XI. The small ordered domain is named 'memory' of hydrogen ordered ice because it is the residual structure of ice XI. Since the memory exists up to at least 111 K, most of ices in the solar system are hydrogen ordered and may have ferroelectricity. The small hydrogen-ordered domains govern the cosmochemical properties of ice and evolution of icy grains in the universe.

Chakoumakos, Bryan C [ORNL

2011-01-01T23:59:59.000Z

278

Core Analysis | Open Energy Information  

Open Energy Info (EERE)

Core Analysis Core Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Core Analysis Details Activities (41) Areas (28) Regions (2) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Rock Lab Analysis Information Provided by Technique Lithology: Core analysis is done to define lithology. Stratigraphic/Structural: Core analysis can locate faults or fracture networks. Oriented core can give additional important information on anisotropy. Hydrological: Thermal: Thermal conductivity can be measured from core samples. Cost Information Low-End Estimate (USD): 2,000.00200,000 centUSD 2 kUSD 0.002 MUSD 2.0e-6 TUSD / 30 foot core Median Estimate (USD): 10,000.001,000,000 centUSD

279

Neutron spectroscopy of high-density amorphous ice.  

DOE Green Energy (OSTI)

Vibrational spectra of high-density amorphous ice (hda-ice) for H{sub 2}O and D{sub 2}O samples were measured by inelastic neutron scattering. The measured spectra of hda-ice are closer to those for high-pressure phase ice-VI, but not for low-density ice-Ih. This result suggests that similar to ice-VI the structure of hda-ice should consist of two interpenetrating hydrogen-bonded networks having no hydrogen bonds between themselves.

Kolesnikov, A. I.

1998-07-17T23:59:59.000Z

280

Argonne Modernization Planning EA November 2011 DOE/EA-1866  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Argonne Modernization Planning EA November 2011 Argonne Modernization Planning EA November 2011 DOE/EA-1866 ENVIRONMENTAL ASSESSMENT FOR ARGONNE NATIONAL LABORATORY MODERNIZATION PLANNING U.S. Department of Energy Office of Science - Argonne Site Office November 2011 Argonne Modernization Planning EA November 2011 This page intentionally left blank. Argonne Modernization Planning EA November 2011 iii CONTENTS NOTATION .............................................................................................................................. vii COMMON METRIC/BRITISH EQUIVALENTS .................................................................. x EXECUTIVE SUMMARY ...................................................................................................... xi

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Smoothed particle hydrodynamics Non-Newtonian model for ice-sheet and ice-shelf dynamics  

SciTech Connect

Mathematical modeling of ice sheets is complicated by the non-linearity of the governing equations and boundary conditions. Standard grid-based methods require complex front tracking techniques and have limited capability to handle large material deformations and abrupt changes in bottom topography. As a consequence, numerical methods are usually restricted to shallow ice sheet and ice shelf approximations. We propose a new smoothed particle hydrodynamics (SPH) non-Newtonian model for coupled ice sheet and ice shelf dynamics. SPH, a fully Lagrangian particle method, is highly scalable and its Lagrangian nature and meshless discretization are well suited to the simulation of free surface ?ows, large material deformation, and material fragmentation. In this paper, SPH is used to study 3D ice sheet/ice shelf behavior, and the dynamics of the grounding line. The steady state position of the grounding line obtained from SPH simulations is in good agreement with laboratory observations for a wide range of simulated bedrock slopes, and density ratios, similar to those of ice and sea water. The numerical accuracy of the SPH algorithm is veri?ed by simulating Poiseuille ?ow, plane shear ?ow with free surface and the propagation of a blob of ice along a horizontal surface. In the laboratory experiment, the ice was represented with a viscous Newtonian ?uid. In the present work, however, the ice is modeled as both viscous Newtonian ?uid and non-Newtonian ?uid, such that the e?ect of non-Newtonian rheology on the dynamics of grounding line was examined. The non-Newtonian constitutive relation is prescribed to be Glens law for the creep of polycrystalline ice. A V-shaped bedrock ramp is further introduced to model the real geometry of bedrock slope.

Pan, Wenxiao; Tartakovsky, Alexandre M.; Monaghan, Joseph J.

2013-06-01T23:59:59.000Z

282

A Smoothed Particle Hydrodynamics Model for Ice Sheet and Ice Shelf Dynamics  

SciTech Connect

Mathematical modeling of ice sheets is complicated by the non-linearity of the governing equations and boundary conditions. Standard grid-based methods require complex front tracking techniques and have limited capability to handle large material deformations and abrupt changes in bottom topography. As a consequence, numerical methods are usually restricted to shallow ice sheet and ice shelf approximations. We propose a new smoothed particle hydrodynamics (SPH) model for coupled ice sheet and ice shelf dynamics. SPH is a fully Lagrangian particle method. It is highly scalable and its Lagrangian nature and meshless discretization are well suited to the simulation of free surface flows, large material deformation, and material fragmentation. In this paper SPH is used to study ice sheet/ice shelf behavior, and the dynamics of the grounding line. The steady state position of the grounding line obtained from the SPH simulations is in good agreement with laboratory observations for a wide range of simulated bedrock slopes, and density ratios similar to those of ice and sea water. The numerical accuracy of the SPH algorithm is further verified by simulating the plane shear flow of two immiscible fluids and the propagation of a highly viscous blob of fluid along a horizontal surface. In the experiment, the ice was represented with a viscous newtonian fluid. For consistency, in the described SPH model the ice is also modeled as a viscous newtonian fluid. Typically, ice sheets are modeled as a non-Newtonian fluid, accounting for the changes in the mechanical properties of ice. Implementation of a non-Newtonian rheology in the SPH model is the subject of our ongoing research.

Pan, Wenxiao; Tartakovsky, Alexandre M.; Monaghan, Joseph J.

2012-02-08T23:59:59.000Z

283

ICES Training programme The International Council for the Exploration of the Sea (ICES) offers courses led by high-profile scientists and  

E-Print Network (OSTI)

: +45 3338 6700 Fax: +45 3393 4215 info@ices.dk You can find more information about: ICES HQ here Hotels tuition fee. Organization The course is organized by the ICES Secretariat as part of the ICES Training

284

A ``triple sea-ice state'' mechanism for the abrupt warming and synchronous ice sheet collapses during Heinrich events  

E-Print Network (OSTI)

changes. This weak coupling can lead to a ``nonlinear phase locking'' of the different ice sheets whichA ``triple sea-ice state'' mechanism for the abrupt warming and synchronous ice sheet collapses. [1] Abrupt, switch-like, changes in sea ice cover are proposed as a mechanism for the large

Sayag, Roiy

285

Aircraft Measurements of Icing in Supercooled and Water Droplet/Ice Crystal Clouds  

Science Conference Proceedings (OSTI)

Icing measurements were carried out in Spain during the Precipitation Enhancement Project experiment in 1979, with an instrumented DC-7 aircraft.

M. Bain; J. F. Gayet

1982-05-01T23:59:59.000Z

286

Modern Information Retrieval Ricardo BaezaYates  

E-Print Network (OSTI)

­Yates, Berthier Ribeiro­Neto. p. cm. Includes bibliographical references and index. ISBN 0­201­39829­X 1 the fact that several people have contributed to the text, this book is really much more a textbook than of all the important aspects of modern information retrieval. From IR models to indexing text, from IR

Hearst, Marti

287

Perception Thresholds of Flicker in Modern Lighting  

Science Conference Proceedings (OSTI)

This power quality (PQ) case study reports the results of tests performed at the University of New Brunswick Department of Psychology to determine whether perception thresholds of humans to flicker in modern magnetic, electronic, and halogen lighting is significantly different from their reaction to flicker in a standard 60-watt incandescent lamp.

2003-12-31T23:59:59.000Z

288

Nailing Down Ice in a Cloud Model  

NLE Websites -- All DOE Office Websites (Extended Search)

Nailing Down Ice in a Cloud Model Nailing Down Ice in a Cloud Model For original submission and image(s), see ARM Research Highlights http://www.arm.gov/science/highlights/ Research Highlight A research team led by scientists at Pacific Northwest National Laboratory identified specific strengths and weaknesses of four different ice cloud retrieval algorithms. Their comparisons tested the ability of the algorithms to obtain cloud properties from radar and lidar observational measurements. The team noted the sometimes large variances in heating/cooling measurements compared to the observed data. Identifying specific weaknesses will help scientists improve our understanding of cloud properties in the atmosphere, which can be used for climate model development and evaluation. "Measuring the effective size and mass of ice crystals impacts our understanding

289

PSU BEN & JERRY'S STUDENT ICE CREAM CATERING  

E-Print Network (OSTI)

DIY Sundae Student Sundae Party Do you want it delivered? We will bring your order right to your door. This is a complete DIY Ice Cream Sundae Extravaganza, just for PSU students! Pick 3 flavors and 3 toppings, we

290

Single Scattering Properties of Atmospheric Ice Crystals  

Science Conference Proceedings (OSTI)

Simulations of scattering and polarization properties for randomly oriented polyhedral ice crystals are presented based on the geometric optics and the far-field diffraction approximation. Particle shapes range from various hexagonal symmetric ...

Andreas Macke; Johannes Mueller; Ehrhard Raschke

1996-10-01T23:59:59.000Z

291

Aggregation of Ice Crystals in Cirrus  

Science Conference Proceedings (OSTI)

Results are given from analysis of the aggregation of thick plate, columnar, and bullet rosette ice crystals in cirrus. Data were obtained from PMS 2D-C images, oil coated slides, and aircraft meteorological measurements. Crystal size ranged from ...

Masahiro Kajikawa; Andrew J. Heymsfield

1989-10-01T23:59:59.000Z

292

Ice Crystal Production by Mountain Surfaces  

Science Conference Proceedings (OSTI)

Evidence is presented for a process of ice crystal generation in supercooled orographic clouds in contact with snow-covered mountain surfaces. Comparisons of the crystal concentrations at the surface with aircraft sampling indicate that the ...

David C. Rogers; Gabor Vali

1987-09-01T23:59:59.000Z

293

Radar and Radiation Properties of Ice Clouds  

Science Conference Proceedings (OSTI)

The authors derive relations of the equivalent radar reflectivity Ze and extinction coefficient ? of ice clouds and confirm the theory by in situ aircraft observations during the First International Satellite Cloud Climatology Project Regional ...

David Atlas; Sergey Y. Matrosov; Andrew J. Heymsfield; Ming-Dah Chou; David B. Wolff

1995-11-01T23:59:59.000Z

294

GELISOLS GEOCHEMISTRY OF SNOW AND ICE ... - Springer  

Science Conference Proceedings (OSTI)

and poses a serious risk to dam stability (Richardson and Reynolds, 2000b). Average rates of subsidence due to melting of buried ice in the moraine dam at Imja.

295

Observations of the Askaryan Effect in Ice  

E-Print Network (OSTI)

We report on the first observations of the Askaryan effect in ice: coherent impulsive radio Cherenkov radiation from the charge asymmetry in an electromagnetic (EM) shower. Such radiation has been observed in silica sand and rock salt, but this is the first direct observation from an EM shower in ice. These measurements are important since the majority of experiments to date that rely on the effect for ultra-high energy neutrino detection are being performed using ice as the target medium. As part of the complete validation process for the Antarctic Impulsive Transient Antenna (ANITA) experiment, we performed an experiment at the Stanford Linear Accelerator Center (SLAC) in June 2006 using a 7.5 metric ton ice target, yielding results fully consistent with theoretical expectations.

ANITA collaboration; P. W. Gorham; S. W. Barwick; J. J. Beatty; D. Z. Besson; W. R. Binns; C. Chen; P. Chen; J. M. Clem; A. Connolly; P. F. Dowkontt; M. A. DuVernois; R. C. Field; D. Goldstein; A. Goodhue; C. Hast; C. L. Hebert; S. Hoover; M. H. Israel; J. Kowalski; J. G. Learned; K. M. Liewer; J. T. Link; E. Lusczek; S. Matsuno; B. Mercurio; C. Miki; P. Miocinovic; J. Nam; C. J. Naudet; J. Ng; R. Nichol; K. Palladino; K. Reil; A. Romero-Wolf; M. Rosen; D. Saltzberg; D. Seckel; G. S. Varner; D. Walz; F. Wu

2006-11-03T23:59:59.000Z

296

Aircraft Icing Caused by Large Supercooled Droplets  

Science Conference Proceedings (OSTI)

The characteristic of aircraft icing environments containing large supercooled droplets are described. Substantial loss in rate of climb capability can result from less than 10 minutes duration in conditions where fewer than 0.11 cm?3 of ...

Marcia K. Politovich

1989-09-01T23:59:59.000Z

297

Aircraft Icing Conditions in Northeast Colorado  

Science Conference Proceedings (OSTI)

The in-flight icing environment in northeastern Colorado is described through remote and in situ measurements. Four field efforts in the winters of 1990 through 1994 were conducted in the area, and comprehensive datasets from research aircraft, ...

Marcia K. Politovich; Tiffany A. O. Bernstein

2002-02-01T23:59:59.000Z

298

Ice Formation in Gas-Diffusion Layers  

SciTech Connect

Under sub-freezing conditions, ice forms in the gas-diffusion layer (GDL) of a proton exchange membrane fuel cell (PEMFC) drastically reducing cell performance. Although a number of strategies exist to prevent ice formation, there is little fundamental understanding of the mechanisms of freezing within PEMFC components. Differential scanning calorimetry (DSC) is used to elucidate the effects of hydrophobicity (Teflon loading) and water saturation on the rate of ice formation within three commercial GDLs. We find that as the Teflon loading increases, the crystallization temperature decreases due to a change in internal ice/substrate contact angle, as well as the attainable level of water saturation. Classical nucleation theory predicts the correct trend in freezing temperature with Teflon loading.

Dursch, Thomas; Radke, Clayton J.; Weber, Adam Z.

2010-07-10T23:59:59.000Z

299

Observations of the Askaryan Effect in Ice  

SciTech Connect

We report on the first observations of the Askaryan effect in ice: coherent impulsive radio Cherenkov radiation from the charge asymmetry in an electromagnetic (EM) shower. Such radiation has been observed in silica sand and rock salt, but this is the first direct observation from an EM shower in ice. These measurements are important since the majority of experiments to date that rely on the effect for ultra-high energy neutrino detection are being performed using ice as the target medium. As part of the complete validation process for the Antarctic Impulsive Transient Antenna (ANITA) experiment, we performed an experiment at the Stanford Linear Accelerator Center (SLAC) in June 2006 using a 7.5 metric ton ice target, yielding results fully consistent with theoretical expectations.

Gorham, P.W.

2007-01-16T23:59:59.000Z

300

2001 BTS Core Databook  

Buildings Energy Data Book (EERE)

1 BTS CORE 1 BTS CORE DATABOOK OFFICE OF ENERGY EFFICIENCY AND RENEWABLE ENERGY U.S. DEPARTMENT OF ENERGY This version is dated: November 30, 2001 REVISED data tables on the web site that have been changed since November 30, 2001 include tables: 5.6.7 5.6.8 5.6.9 5.10.8 5.10.9 5.10.10 5.10.11 5.10.12 5.10.13 5.10.14 5.10.15 5.10.16 5.10.17 5.10.18 NEW data tables on the web site that have been added since July 13, 2001 include tables: 5.6.14 5.9.7 5.9.8 5.9.9 REVISED data tables on the web site that have been changed since July 13, 2001 include tables: 4.1.1 4.1.2 4.1.4 4.1.5 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.9 4.3.1 4.3.2 4.3.3 4.3.4 4.5.1 4.5.2 4.5.3 5.1.2 5.3.1 5.8.1 5.10.1 6.2.4 7.1.8 7.3.3 These tables are not included in this version of the 2001 BTS Core Databook. DISCLAIMER DISCLAIMER DISCLAIMER DISCLAIMER

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Measurement of the Atmospheric $?_e$ flux in IceCube  

E-Print Network (OSTI)

We report the first measurement of the atmospheric electron neutrino flux in the energy range between approximately 80 GeV and 6 TeV, using data recorded during the first year of operation of IceCube's DeepCore low energy extension. Techniques to identify neutrinos interacting within the DeepCore volume and veto muons originating outside the detector are demonstrated. A sample of 1029 events is observed in 281 days of data, of which 496 $\\pm$ 66(stat.) $\\pm$ 88(syst.) are estimated to be cascade events, including both electron neutrino and neutral current events. The rest of the sample includes residual backgrounds due to atmospheric muons and charged current interactions of atmospheric muon neutrinos. The flux of the atmospheric electron neutrinos is consistent with models of atmospheric neutrinos in this energy range. This constitutes the first observation of electron neutrinos and neutral current interactions in a very large volume neutrino telescope optimized for the TeV energy range.

IceCube Collaboration; M. G. Aartsen; R. Abbasi; Y. Abdou; M. Ackermann; J. Adams; J. A. Aguilar; M. Ahlers; D. Altmann; K. Andeen; J. Auffenberg; X. Bai; M. Baker; S. W. Barwick; V. Baum; R. Bay; K. Beattie; J. J. Beatty; S. Bechet; J. Becker Tjus; K. -H. Becker; M. Bell; M. L. Benabderrahmane; S. BenZvi; J. Berdermann; P. Berghaus; D. Berley; E. Bernardini; D. Bertrand; D. Z. Besson; D. Bindig; M. Bissok; E. Blaufuss; J. Blumenthal; D. J. Boersma; S. Bohaichuk; C. Bohm; D. Bose1; S. Boser; O. Botner; L. Brayeur; A. M. Brown; R. Bruijn; J. Brunner; S. Buitink; M. Carson; J. Casey; M. Casier; D. Chirkin; B. Christy; K. Clark; F. Clevermann; S. Cohen; D. F. Cowen; A. H. Cruz Silva; M. Danninger; J. Daughhetee; J. C. Davis; C. De Clercq; S. De Ridder; F. Descamps; P. Desiati; G. de Vries-Uiterweerd; T. DeYoung; J. C. Diaz-Velez; J. Dreyer; J. P. Dumm; M. Dunkman; R. Eagan; B. Eberhardt; J. Eisch; R. W. Ellsworth; O. Engdegard; S. Euler; P. A. Evenson; O. Fadiran; A. R. Fazely; A. Fedynitch; J. Feintzeig; T. Feusels; K. Filimonov; C. Finley; T. Fischer-Wasels; S. Flis; A. Franckowiak; R. Franke; K. Frantzen; T. Fuchs; T. K. Gaisser; J. Gallagher; L. Gerhardt; L. Gladstone; T. Glusenkamp; A. Goldschmidt; G. Golup; J. A. Goodman; D. Gora; D. Grant; A. Gross; S. Grullon; M. Gurtner; C. Ha; A. Haj Ismail; A. Hallgren; F. Halzen; K. Hanson; D. Heereman; P. Heimann; D. Heinen; K. Helbing; R. Hellauer; S. Hickford; G. C. Hill; K. D. Hoffman; R. Hoffmann; A. Homeier; K. Hoshina; W. Huelsnitz; P. O. Hulth; K. Hultqvist; S. Hussain; A. Ishihara; E. Jacobi; J. Jacobsen; G. S. Japaridze; O. Jlelati; A. Kappes; T. Karg; A. Karle; J. Kiryluk; F. Kislat; J. Klas; S. R. Klein; J. -H. Kohne; G. Kohnen; H. Kolanoski; L. Kopke; C. Kopper; S. Kopper; D. J. Koskinen; M. Kowalski; M. Krasberg; G. Kroll; J. Kunnen; N. Kurahashi; T. Kuwabara; M. Labare; H. Landsman; M. J. Larson; R. Lauer; M. Lesiak-Bzdak; J. Lunemann; J. Madsen; R. Maruyama; K. Mase; H. S. Matis; F. McNally; K. Meagher; M. Merck; P. Meszaros; T. Meures; S. Miarecki; E. Middell; N. Milke; J. Miller; L. Mohrmann; T. Montaruli; R. Morse; R. Nahnhauer; U. Naumann; S. C. Nowicki; D. R. Nygren; A. Obertacke; S. Odrowski; A. Olivas; M. Olivo; A. O'Murchadha; S. Panknin; L. Paul; J. A. Pepper; C. Perez de los Heros; D. Pieloth; N. Pirk; J. Posselt; P. B. Price; G. T. Przybylski; L. Radel; K. Rawlins; P. Redl; E. Resconi; W. Rhode; M. Ribordy; M. Richman; B. Riedel; J. P. Rodrigues; C. Rott; T. Ruhe; B. Ruzybayev; D. Ryckbosch; S. M. Saba; T. Salameh; H. -G. Sander; M. Santander; S. Sarkar; K. Schatto; M. Scheel; F. Scheriau; T. Schmidt; M. Schmitz; S. Schoenen; S. Schoneberg; L. Schonherr; A. Schonwald; A. Schukraft; L. Schulte; O. Schulz; D. Seckel; S. H. Seo; Y. Sestayo; S. Seunarine; C. Sheremata; M. W. E. Smith; M. Soiron; D. Soldin; G. M. Spiczak; C. Spiering; M. Stamatikos; T. Stanev; A. Stasik; T. Stezelberger; R. G. Stokstad; A. Stoss; E. A. Strahler; R. Strom; G. W. Sullivan; H. Taavola; I. Taboada; A. Tamburro; S. Ter-Antonyan; S. Tilav; P. A. Toale; S. Toscano; M. Usner; D. van der Drift; N. van Eijndhoven; A. Van Overloop; J. van Santen; M. Vehring; M. Voge1; M. Vraeghe; C. Walck; T. Waldenmaier; M. Wallraff; M. Walter; R. Wasserman; Ch. Weaver; C. Wendt; S. Westerhoff; N. Whitehorn; K. Wiebe; C. H. Wiebusch; D. R. Williams; H. Wissing; M. Wolf; T. R. Wood; K. Woschnagg; C. Xu; D. L. Xu; X. W. Xu; J. P. Yanez; G. Yodh; S. Yoshida; P. Zarzhitsky; J. Ziemann; S. Zierke; A. Zilles; M. Zoll

2012-12-19T23:59:59.000Z

302

Partial core pulse transformer  

DOE Patents (OSTI)

A light-weight partial-core pule transformer is provided for generating high voltage output pulses with low distortion. The transformer includes sets of ferrite bars arranged so as to extend longitudinally along the inside and outside surfaces of a high frequency cylindrical coil winding-pair. The ferrite bars are arranged in pairs with the bars of each pair being located on opposite sides of winding-pair. The bars are preferably disposed in a radially symmetric arrangement around the winding-pair, and each has a length at least equal to the width of the winding-pair.

Lawson, R.N.; Rohwein, G.J.

1991-12-31T23:59:59.000Z

303

First Results from IceCube  

E-Print Network (OSTI)

IceCube is a 1 km$^3$ neutrino observatory being built to study neutrino production in active galactic nuclei, gamma-ray bursts, supernova remnants, and a host of other astrophysical sources. High-energy neutrinos may signal the sources of ultra-high energy cosmic rays. IceCube will also study many particle-physics topics: searches for WIMP annihilation in the Earth or the Sun, and for signatures of supersymmetry in neutrino interactions, studies of neutrino properties, including searches for extra dimensions, and searches for exotica such as magnetic monopoles or Q-balls. IceCube will also study the cosmic-ray composition. In January, 2005, 60 digital optical modules (DOMs) were deployed in the South Polar ice at depths ranging from 1450 to 2450 meters, and 8 ice-tanks, each containing 2 DOMs were deployed as part of a surface air-shower array. All 76 DOMs are collecting high-quality data. After discussing the IceCube physics program and hardware, I will present some initial results with the first DOMs.

Spencer R. Klein; for the IceCube Collaboration

2006-01-12T23:59:59.000Z

304

Core-tube data logger  

DOE Green Energy (OSTI)

Wireline core drilling, increasingly used for geothermal exploration, employs a core-tube to capture a rock core sample during drilling. Three types of core-tube data loggers (CTDL) have been built and tested to date by Sandia national Laboratories. They are: (1) temperature-only logger, (2) temperature/inclinometer logger and (3) heat-shielded temperature/inclinometer logger. All were tested during core drilling operations using standard wireline diamond core drilling equipment. While these tools are designed for core-tube deployment, the tool lends itself to be adapted to other drilling modes and equipment. Topics covered in this paper include: (1) description on how the CTDLs are implemented, (2) the components of the system, (3) the type of data one can expect from this type of tool, (4) lessons learned, (5) comparison to its counterpart and (6) future work.

Henfling, J.A.; Normann, R.A.; Knudsen, S.; Drumheller, D.

1997-01-01T23:59:59.000Z

305

Force criterion prediction of damage for carbon/epoxy composite panels impacted by high velocity ice  

E-Print Network (OSTI)

H, Kedward, K. T. Modeling Hail Ice Impacts and PredictingInvestigation of High Velocity Ice Impacts on Woven Carbon/Analysis Correlation of Hail Ice Impacting Composite

Rhymer, Jennifer D.

2012-01-01T23:59:59.000Z

306

Melting Ice and Tangled Nets: Litigation and Conservation Policy in the US, Australia, and Canada  

E-Print Network (OSTI)

Melting Ice and Tangled Nets: Litigation and Conservationare heavily dependent on sea ice for their survival, both asvulnerable to the receding sea ice boundaries predicted to

Shaffer, Robert

2012-01-01T23:59:59.000Z

307

Ice-Tethered Profiler Measurements of Dissolved Oxygen under Permanent Ice Cover in the Arctic Ocean  

Science Conference Proceedings (OSTI)

Four ice-tethered profilers (ITPs), deployed between 2006 and 2009, have provided year-round dissolved oxygen (DO) measurements from the surface mixed layer to 760-m depth under the permanent sea ice cover in the Arctic Ocean. These ITPs drifted ...

M.-L. Timmermans; R. Krishfield; S. Laney; J. Toole

2010-11-01T23:59:59.000Z

308

The Icing of an Unheated, Nonrotating Cylinder. Part II. Icing Wind Tunnel Experiments  

Science Conference Proceedings (OSTI)

An experimental investigation of icing on non-rotating cylinders, under both wet and dry conditions was undertaken. Airspeeds of 30, 61 and 122 m s?1 appropriate to aircraft icing, liquid water contents of 0.4, 0.8 and 1.2 g m?3 and temperatures ...

E. P. Lozowski; J. R. Stallabrass; P. F. Hearty

1983-12-01T23:59:59.000Z

309

Simulations of Snow, Ice, and Near-Surface Atmospheric Processes on Ice Station Weddell  

Science Conference Proceedings (OSTI)

The 4-month drift of Ice Station Weddell (ISW) produced over 2000 h of nearly continuous measurements in the atmospheric surface layer and in the snow and sea ice in the western Weddell Sea. This paper reports simulations, based on these data, of ...

Edgar L. Andreas; Rachel E. Jordan; Aleksandr P. Makshtas

2004-08-01T23:59:59.000Z

310

Arctic Sea Ice Retreat in 2007 Follows Thinning Trend  

E-Print Network (OSTI)

The minimum of Arctic sea ice extent in the summer of 2007 was unprecedented in the historical record. A coupled iceocean model is used to determine the state of the ice and ocean over the past 29 yr to investigate the causes of this ice extent minimum within a historical perspective. It is found that even though the 2007 ice extent was strongly anomalous, the loss in total ice mass was not. Rather, the 2007 ice mass loss is largely consistent with a steady decrease in ice thickness that began in 1987. Since then, the simulated mean September ice thickness within the Arctic Ocean has declined from 3.7 to 2.6 m at a rate of ?0.57 m decade ?1. Both the area coverage of thin ice at the beginning of the melt season and the total volume of ice lost in the summer have been steadily increasing. The combined impact of these two trends caused a large reduction in the September mean ice concentration in the Arctic Ocean. This created conditions during the summer of 2007 that allowed persistent winds to push the remaining ice from the Pacific side to the Atlantic side of the basin and more than usual into the Greenland Sea. This exposed large areas of open water, resulting in the record ice extent anomaly. 1.

R. W. Lindsay; J. Zhang; A. Schweiger; M. Steele; H. Stern

2008-01-01T23:59:59.000Z

311

Modeling of Antarctic sea ice in a general circulation model  

SciTech Connect

A dynamic-thermodynamic sea ice model is developed and coupled with the Melbourne University general circulation model to simulate the seasonal cycle of the Antarctic sea ice distributions The model is efficient, rapid to compute, and useful for a range of climate studies. The thermodynamic part of the sea ice model is similar to that developed by Parkinson and Washington, the dynamics contain a simplified ice rheology that resists compression. The thermodynamics is based on energy conservation at the top surface of the ice/snow, the ice/water interface, and the open water area to determine the ice formation, accretion, and ablation. A lead parameterization is introduced with an effective partitioning scheme for freezing between and under the ice floes. The dynamic calculation determines the motion of ice, which is forced with the atmospheric wind, taking account of ice resistance and rafting. The simulated sea ice distribution compares reasonably well with observations. The seasonal cycle of ice extent is well simulated in phase as well as in magnitude. Simulated sea ice thickness and concentration are also in good agreement with observations over most regions and serve to indicate the importance of advection and ocean drift in the determination of the sea ice distribution. 64 refs., 15 figs., 2 tabs.

Wu, Xingren; Budd, W.F. [Antarctic Cooperative Research Centre, Tasmania (Australia)] [Antarctic Cooperative Research Centre, Tasmania (Australia); Simmonds, I. [School of Earth Sciences, Victoria (Australia)] [School of Earth Sciences, Victoria (Australia)

1997-04-01T23:59:59.000Z

312

Fire in the Ice, Winter 2003  

NLE Websites -- All DOE Office Websites (Extended Search)

and contamination. Core samples were taken with a newly designed hydrate corer, a manipulator-operated drill with a detachable core bit. Sea-Link's manipulator arm held the...

313

Effects of ice particle size vertical inhomogeneity on the passive remote sensing of ice clouds  

Science Conference Proceedings (OSTI)

The solar reflectance bi-spectral (SRBS) and infrared split-window (IRSpW) methods are two of the most popular techniques for passive ice cloud property retrievals from multispectral imagers. Ice clouds are usually assumed to be vertically homogeneous in global operational algorithms based on these methods, although significant vertical variations of ice particle size are typically observed in ice clouds. In this study we investigate uncertainties in retrieved optical thickness, effective particle size, and ice water path introduced by a homogeneous cloud assumption in both the SRBS and IRSpW methods, and focus on whether the assumption can lead to significant discrepancies between the two methods. The study simulates the upwelling spectral radiance associated with vertically structured clouds and passes the results through representative SRBS and IRSpW retrieval algorithms. Cloud optical thickness is limited to values for which IRSpW retrievals are possible (optical thickness less than about 7). When the ice cloud is optically thin and yet has a significant ice particle size vertical variation, it is found that both methods tend to underestimate the effective radius and ice water path. The reason for the underestimation is the nonlinear dependence of ice particle scattering properties (extinction and single scattering albedo) on the effective radius. Because the nonlinearity effect is stronger in the IRSpW than the SRBS method, the IRSpW-based IWP tends to be smaller than the SRBS counterpart. When the ice cloud is moderately optically thick and ice particle size increases monotonically towards cloud base, the two methods are in qualitative agreement; in the event that ice particle size decreases towards cloud base, the effective radius and ice water path retrievals based on the SRBS method are substantially larger than those from the IRSpW. The main findings of this study suggest that the homogenous cloud assumption can affect the SRBS and IRSpW methods to different extents and, consequently, can lead to significantly different retrievals. Therefore caution should be taken when comparing and combining the ice cloud property retrievals from these two methods.

Zhang, Zhibo; Platnick, Steven; Yang, Ping; Heidinger, Andrew K.; Comstock, Jennifer M.

2010-09-03T23:59:59.000Z

314

Sea Ice Brightness Temperature as a Function of Ice Thickness, Part II: Computed curves for thermodynamically modelled ice profiles  

E-Print Network (OSTI)

Ice thickness is an important variable for climate scientists and is still an unsolved problem for satellite remote sensing specialists. There has been some success detecting the thickness of thin ice from microwave radiometers, and with this in mind this study attempts to model the thickness-radiance relation of sea ice at frequencies employed by the Soil Moisture and Ocean Salinity (SMOS) radiometer and the Advanced Microwave Scanning Radiometer (AMSR): between 1.4 and 89 GHz. In the first part of the study, the salinity of the ice was determined by a pair of empirical relationships, while the temperature was determined by a thermodynamic model. Because the thermodynamic model can be used as a simple ice growth model, in this, second part, the salinities are determined by the growth model. Because the model uses two, constant-weather scenarios representing two extremes ("fall freeze-up" and "winter cold snap"), brine expulsion is modelled with a single correction-step founded on mass conservation. The growt...

Mills, Peter

2012-01-01T23:59:59.000Z

315

MPI-hybrid Parallelism for Volume Rendering on Large, Multi-core Systems  

Science Conference Proceedings (OSTI)

This work studies the performance and scalability characteristics of"hybrid'" parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

Howison, Mark; Bethel, E. Wes; Childs, Hank

2010-03-20T23:59:59.000Z

316

Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems  

Science Conference Proceedings (OSTI)

This work studies the performance and scalability characteristics of"hybrid'"parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

Howison, Mark; Bethel, E. Wes; Childs, Hank

2010-07-12T23:59:59.000Z

317

Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems  

SciTech Connect

This work studies the performance and scalability characteristics of"hybrid" parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

Howison, Mark; Bethel, E. Wes; Childs, Hank

2010-06-14T23:59:59.000Z

318

CYANATE ION IN COMPACT AMORPHOUS WATER ICE  

SciTech Connect

The 4.62 {mu}m infrared (2164.5 cm{sup -1}) absorption band, observed in ice mantels toward many young stellar objects, has been mostly attributed to the {nu}{sub 3} (CN stretch) band of OCN{sup -} ions. We present in this work a spectroscopic study of OCN{sup -} ions embedded in compact amorphous ice in a range of concentrations and temperatures relevant to astronomical observations together with quantum mechanical calculations of the {nu}{sub 3} band of OCN{sup -} in various H{sub 2}O environments. The ice samples containing the ions are prepared through hyperquenching of liquid droplets of K{sup +}OCN{sup -} solutions on a substrate at 14 K. The {nu}{sub 3} OCN{sup -} band appears as a broad feature peaking at 4.64 {mu}m with a secondary maximum at 4.54 {mu}m and is much weaker than the corresponding peak in the liquid solution or in the solid salt. A similar weakening is observed for other OCN{sup -} absorption peaks at 7.66 {mu}m (2{nu}{sub 2}) and 8.20 {mu}m ({nu}{sub 1}). The theoretical calculations for the {nu}{sub 3} vibration lead to a range of frequencies spanning the experimentally observed width. This frequency spread could help explain the pronounced drop in the band intensity in the ice. The OCN{sup -} {nu}{sub 3} band in the present compact ices is also broader and much weaker than that reported in the literature for OCN{sup -} ions obtained by variously processing porous ice samples containing suitable neutral precursors. The results of this study indicate that the astronomical detection of OCN{sup -} in ice mantels could be significantly impaired if the ion is embedded in a compact water network.

Mate, Belen; Herrero, Victor J.; Rodriguez-Lazcano, Yamilet; Moreno, Miguel A.; Escribano, Rafael [Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, E-28006 Madrid (Spain); Fernandez-Torre, Delia [Departamento de Fisica Teorica de la Materia Condensada, Universidad Autonoma de Madrid, E-28050 Madrid (Spain); Gomez, Pedro C. [Departamento de Quimica Fisica I, Universidad Complutense, Unidad Asociada UCM-CSIC, E-28040 Madrid (Spain)

2012-11-10T23:59:59.000Z

319

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Mid-America Regulatory Conference Mid-America Regulatory Conference Joe Miller - DOE / NETL Modern Grid Team Lead June 15, 2009 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y This material is based upon work supported by the Department of Energy under Award Number DE-AC26-04NT41817 This presentation was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness,

320

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Activities Activities 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability Joe Miller, Modern Grid Strategy Team Lead ACSessions 2009 April 27, 2009 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y This material is based upon work supported by the Department of Energy under Award Number DE-AC26- 04NT41817 This presentation was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process

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321

Nanometer Particles: Modern Methods of Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Nanometer Particles: Modern Methods of Research Nanometer Particles: Modern Methods of Research Speaker(s): Rashid Mavliev Date: August 10, 1999 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Richard Sextro "Nanometer particles" (with diameter below 50 - 100 nm) have attracted attention during recent years because of their increasing role in industries such as powder technology and semiconductors. They also play a critical role in atmospheric processes. At this size range the properties of particles are different from those of bulk materials and single molecules. This promises new technological innovations and potential scientific discoveries. At the same time it makes the detection and characterization of such particles imperative. Optical methods, which allow for simultaneous measurement of size and concentration of particles

322

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Basics Basics 1 Conducted by the National Energy Technology Laboratory Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability Joe Miller, Modern Grid Strategy Team Lead Grid Econ - The Economics of a Smarter Electric Grid March 16, 2009 Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y This material is based upon work supported by the Department of Energy under Award Number DE-AC26- 04NT41817 This presentation was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness,

323

Principal Characteristics of a Modern Grid  

NLE Websites -- All DOE Office Websites (Extended Search)

Revolution? Revolution? ACI Revolutionizing the Smart Grid Presented by Steve Pullins, Modern Grid Team May 2009 1 Funded by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability Conducted by the National Energy Technology Laboratory Office of Electricity Delivery and Energy Reliability MODERN GRID S T R A T E G Y This material is based upon work supported by the Department of Energy under Award Number DE-AC26-04NT41817 This presentation was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness,

324

NETL: Carbon Storage - Core R&D  

NLE Websites -- All DOE Office Websites (Extended Search)

Core R&D Carbon Storage Core R&D The Core Research and Development (Core R&D) focuses on developing new carbon capture and storage (CCS) technologies to a pre-commercial...

325

FINAL REPORT - CENTER FOR GRID MODERNIZATION  

SciTech Connect

The objective of the CGM was to develop high-priority grid modernization technologies in advanced sensors, communications, controls and smart systems to enable use of real-time or near real-time information for monitoring, analyzing and managing distribution and transmission grid conditions. The key strategic approach to carry out individual CGM research and development (R&D) projects was through partnerships, primarily with the GridApp Consortium utility members.

Markiewicz, Daniel R

2008-06-30T23:59:59.000Z

326

HTTF Core Stress Analysis  

SciTech Connect

In accordance with the need to determine whether cracking of the ceramic core disks which will be constructed and used in the High Temperature Test Facility (HTTF) for heatup and cooldown experiments, a set of calculation were performed using Abaqus to investigate the thermal stresses levels and likelihood for cracking. The calculations showed that using the material properties provided for the Greencast 94F ceramic, cracking is predicted to occur. However, this modeling does not predict the size or length of the actual cracks. It is quite likely that cracks will be narrow with rough walls which would impede the flow of coolant gases entering the cracks. Based on data recorded at Oregon State University using Greencast 94F samples that were heated and cooled at prescribed rates, it was concluded that the likelihood that the cracks would be detrimental to the experimental objectives is small.

Brian D. Hawkes; Richard Schultz

2012-07-01T23:59:59.000Z

327

ICE AND DUST IN THE PRESTELLAR DARK CLOUD LYNDS 183: PREPLANETARY MATTER AT THE LOWEST TEMPERATURES  

Science Conference Proceedings (OSTI)

Dust grains are nucleation centers and catalysts for the growth of icy mantles in quiescent interstellar clouds, the products of which may accumulate into preplanetary matter when new stars and solar systems form within the clouds. In this paper, we present the first spectroscopic detections of silicate dust and the molecular ices H{sub 2}O, CO, and CO{sub 2} in the vicinity of the prestellar core L183 (L134N). An infrared photometric survey of the cloud was used to identify reddened background stars, and we present spectra covering solid-state absorption features in the wavelength range 2-20 {mu}m for nine of them. The mean composition of the ices in the best-studied line of sight (toward J15542044-0254073) is H{sub 2}O:CO:CO{sub 2} Almost-Equal-To 100:40:24. The ices are amorphous in structure, indicating that they have been maintained at low temperature ({approx}ice column density N(H{sub 2}O) correlates with reddening by dust, exhibiting a threshold effect that corresponds to the transition from unmantled grains in the outer layers of the cloud to ice-mantled grains within, analogous to that observed in other dark clouds. A comparison of results for L183 and the Taurus and IC 5146 dark clouds suggests common behavior, with mantles first appearing in each case at a dust column corresponding to a peak optical depth {tau}{sub 9.7} = 0.15 {+-} 0.03 in the silicate feature. Our results support a previous conclusion that the color excess E{sub J-K} does not obey a simple linear correlation with the total dust column in lines of sight that intercept dense clouds. The most likely explanation is a systematic change in the optical properties of the dust as the density increases.

Whittet, D. C. B.; Poteet, C. A.; Bajaj, V. M.; Horne, D. [Department of Physics, Applied Physics and Astronomy and New York Center for Astrobiology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY 12180 (United States); Chiar, J. E. [SETI Institute, Carl Sagan Center, 189 Bernardo Avenue, Mountain View, CA 94043 (United States); Pagani, L. [LERMA, UMR 8112 du CNRS, Observatoire de Paris, 61 Av. de l'Observatoire, F-75014 Paris (France); Shenoy, S. S. [SOFIA Science Center, NASA Ames Research Center, MS 232-12, Moffett Field, CA 94035 (United States); Adamson, A. J. [Gemini Observatory, Southern Operations Center, Casilla 603, La Serena (Chile)

2013-09-10T23:59:59.000Z

328

Middleware in Modern High Performance Computing System Architectures  

E-Print Network (OSTI)

Middleware in Modern High Performance Computing System Architectures Christian Engelmann, Hong Ong trend in modern high performance computing (HPC) system architectures employs "lean" compute nodes) continue to reside on compute nodes. Key words: High Performance Computing, Middleware, Lean Compute Node

Engelmann, Christian

329

4.602 Modern Art and Mass Culture, Spring 2004  

E-Print Network (OSTI)

This class provides an introduction to modern art and theories of modernism and postmodernism. It focuses on the way artists use the tension between fine art and mass culture to mobilize a critique of both. We will examine ...

Jones, Caroline

330

Modernizing the Grid With Your Help | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Modernizing the Grid With Your Help Modernizing the Grid With Your Help July 25, 2012 - 5:59pm Addthis Lauren Azar Senior Advisor to Secretary Chu Tony Montoya Acting Administrator...

331

WATER ICE IN THE KUIPER BELT  

Science Conference Proceedings (OSTI)

We examine a large collection of low-resolution near-infrared spectra of Kuiper Belt objects (KBOs) and centaurs in an attempt to understand the presence of water ice in the Kuiper Belt. We find that water ice on the surface of these objects occurs in three separate manners: (1) Haumea family members uniquely show surfaces of nearly pure water ice, presumably a consequence of the fragmentation of the icy mantle of a larger differentiated proto-Haumea; (2) large objects with absolute magnitudes of H ice-perhaps mixed with ammonia-that appears to be related to possibly ancient cryovolcanism on these large objects; and (3) smaller KBOs and centaurs which are neither Haumea family members nor cold-classical KBOs appear to divide into two families (which we refer to as 'neutral' and 'red'), each of which is a mixture of a common nearly neutral component and either a slightly red or very red component that also includes water ice. A model suggesting that the difference between neutral and red objects due to formation in an early compact solar system either inside or outside, respectively, of the {approx}20 AU methanol evaporation line is supported by the observation that methanol is only detected on the reddest objects, which are those which would be expected to have the most of the methanol containing mixture.

Brown, M. E.; Fraser, W. C. [Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125 (United States); Schaller, E. L., E-mail: mbrown@caltech.edu [NASA Dryden Aircraft Operations Facility, Palmdale, CA 93550 (United States)

2012-06-15T23:59:59.000Z

332

SURVIVAL OF AMORPHOUS WATER ICE ON CENTAURS  

Science Conference Proceedings (OSTI)

Centaurs are believed to be Kuiper Belt objects in transition between Jupiter and Neptune before possibly becoming Jupiter family comets. Some indirect observational evidence is consistent with the presence of amorphous water ice in Centaurs. Some of them also display a cometary activity, probably triggered by the crystallization of the amorphous water ice, as suggested by Jewitt and this work. Indeed, we investigate the survival of amorphous water ice against crystallization, using a fully three-dimensional thermal evolution model. Simulations are performed for varying heliocentric distances and obliquities. They suggest that crystallization can be triggered as far as 16 AU, though amorphous ice can survive beyond 10 AU. The phase transition is an efficient source of outgassing up to 10-12 AU, which is broadly consistent with the observations of the active Centaurs. The most extreme case is 167P/CINEOS, which barely crystallizes in our simulations. However, amorphous ice can be preserved inside Centaurs in many heliocentric distance-obliquity combinations, below a {approx}5-10 m crystallized crust. We also find that outgassing due to crystallization cannot be sustained for a time longer than 10{sup 4}-10{sup 4} years, leading to the hypothesis that active Centaurs might have recently suffered from orbital changes. This could be supported by both observations (although limited) and dynamical studies.

Guilbert-Lepoutre, Aurelie, E-mail: aguilbert@ucla.edu [Department of Earth and Space Sciences, UCLA, Los Angeles, CA 90095 (United States)

2012-10-01T23:59:59.000Z

333

EA-1866: Modernization Planning at Argonne National Laboratory, Illinois  

Energy.gov (U.S. Department of Energy (DOE))

This EA evaluates the environmental impacts of proposed modernization planning at Argonne National Laboratory in DuPage County, Illinois.

334

Nonlinear threshold behavior during the loss of Arctic sea ice  

E-Print Network (OSTI)

In light of the rapid recent retreat of Arctic sea ice, a number of studies have discussed the possibility of a critical threshold (or "tipping point") beyond which the ice-albedo feedback causes the ice cover to melt away in an irreversible process. The focus has typically been centered on the annual minimum (September) ice cover, which is often seen as particularly susceptible to destabilization by the ice-albedo feedback. Here we examine the central physical processes associated with the transition from ice-covered to ice-free Arctic Ocean conditions. We show that while the ice-albedo feedback promotes the existence of multiple ice cover states, the stabilizing thermodynamic effects of sea ice mitigate this when the Arctic Ocean is ice-covered during a sufficiently large fraction of the year. These results suggest that critical threshold behavior is unlikely during the approach from current perennial sea ice conditions to seasonally ice-free conditions. In a further warmed climate, however, we find that a ...

Eisenman, I; 10.1073/pnas.0806887106

2008-01-01T23:59:59.000Z

335

Surface Wave Propagation in Shallow Water beneath an Inhomogeneous Ice Cover  

Science Conference Proceedings (OSTI)

The scattering of flexuralgravity waves in a layer of shallow fluid beneath an ice cover with irregularities is investigated. The irregularities considered are the ice edges, cracks, areas of finely broken ice, and ice ridges. Even this ...

A. V. Marchenko; K. I. Voliak

1997-08-01T23:59:59.000Z

336

Web-Ice: Integrated Data Collection and Analysis for Macromolecular Crystallography  

E-Print Network (OSTI)

in Blu-Ice. Figure 7: SSRL Web-Ice interface displaying theTable 1: Programs used by Web-Ice for data analysis. ProgramWeb-Ice: Integrated Data Collection and Analysis for

Gonzalez, Ana

2008-01-01T23:59:59.000Z

337

Quantification of the effects of shattering on airborne ice particle measurements  

Science Conference Proceedings (OSTI)

Ice particle shattering poses a serious problem to airborne characterization microstructure of ice clouds. Shattered ice fragments may contaminate particle measurements resulting in artificially high concentrations of small ice. The ubiquitous ...

A. V. Korolev; E. F. Emery; J. W. Strapp; S. G. Cober; G. A. Isaac

338

Quantification of the Effects of Shattering on Airborne Ice Particle Measurements  

Science Conference Proceedings (OSTI)

Ice particle shattering poses a serious problem to the airborne characterization of ice cloud microstructure. Shattered ice fragments may contaminate particle measurements, resulting in artificially high concentrations of small ice. The ubiquitous ...

A. V. Korolev; E. F. Emery; J. W. Strapp; S. G. Cober; G. A. Isaac

2013-11-01T23:59:59.000Z

339

A New Apparatus for Monitoring Sea Ice Thickness Based on the Magnetostrictive-Delay-Line Principle  

Science Conference Proceedings (OSTI)

High-precision ice thickness observations are required to gain a better understanding of oceaniceatmosphere interactions and to validate numerical sea ice models. A new apparatus for monitoring sea ice and snow thickness has been developed, ...

Ruibo Lei; Zhijun Li; Yanfeng Cheng; Xin Wang; Yao Chen

2009-04-01T23:59:59.000Z

340

Intertemporal Computable Equilibrium System (ICES) | Open Energy  

Open Energy Info (EERE)

Intertemporal Computable Equilibrium System (ICES) Intertemporal Computable Equilibrium System (ICES) Jump to: navigation, search Tool Summary Name: Intertemporal Computable Equilibrium System (ICES) Agency/Company /Organization: Fondazione Eni Enrico Mattei Sector: Climate, Energy Complexity/Ease of Use: Moderate Website: www.feem.it/getpage.aspx?id=138&sez=Research&padre=18&sub=75&idsub=102 Related Tools Ex Ante Appraisal Carbon-Balance Tool (EX-ACT) General Equilibrium Model for Economy - Energy - Environment (GEM-E3) DNE21+ ... further results Find Another Tool FIND DEVELOPMENT IMPACTS ASSESSMENT TOOLS A recursive dynamic general equilibrium model developed with the main but not exclusive purpose of assessing the final welfare implication of climate change impacts on world economies. In addition to climate-change impact

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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to obtain the most current and comprehensive results.


341

Ice Towing Tank | Open Energy Information  

Open Energy Info (EERE)

Ice Towing Tank Ice Towing Tank Jump to: navigation, search Basic Specifications Facility Name Ice Towing Tank Overseeing Organization University of Iowa Hydrodynamic Testing Facility Type Tow Tank Length(m) 21.2 Beam(m) 5.0 Depth(m) 1.3 Cost(per day) Contact POC Special Physical Features Specialized for cold regions research, room temperature can be decreased to -10°F Towing Capabilities Towing Capabilities Yes Maximum Velocity(m/s) 0.5 Length of Effective Tow(m) 15.0 Wavemaking Capabilities Wavemaking Capabilities None Channel/Tunnel/Flume Channel/Tunnel/Flume None Wind Capabilities Wind Capabilities None Control and Data Acquisition Cameras Yes Description of Camera Types Underwater Available Sensors Acoustics, Thermal, Turbulence, Velocity Data Generation Capability

342

Eclipse Ice Core Accumulation and Stable Isotope Variability as an Indicator of North Pacific Climate  

Science Conference Proceedings (OSTI)

The high accumulation rate and negligible amount of melt at Eclipse Icefield (3017 m) in the Saint Elias Range of Yukon, Canada, allows for the preservation of a high-resolution isotopic and glaciochemical records valuable for reconstruction of ...

Eric P. Kelsey; Cameron P. Wake; Kaplan Yalcin; Karl Kreutz

2012-09-01T23:59:59.000Z

343

800,000 Year Ice-Core Records of Atmospheric Nitrous Oxide (N2O...  

NLE Websites -- All DOE Office Websites (Extended Search)

create a long-term record to the present. These records are maintained by the World Data Center for Paleoclimatology, National Oceanic and Atmospheric Administration (NOAA), and...

344

800,000-year Ice-Core Records of Atmospheric Carbon Dioxide ...  

NLE Websites -- All DOE Office Websites (Extended Search)

time series extending to the present These records are maintained by the World Data Center for Paleoclimatology, National Oceanic and Atmospheric Administration (NOAA), and...

345

Recent Greenland Accumulation Estimated from Regional Climate Model Simulations and Ice Core Analysis  

Science Conference Proceedings (OSTI)

The accumulation defined as precipitation minus evaporation over Greenland has been simulated with the high-resolution limited-area regional climate model HIRHAM4 applied over an Arctic integration domain. This simulation is compared with a ...

K. Dethloff; M. Schwager; J. H. Christensen; S. Kiilsholm; A. Rinke; W. Dorn; F. Jung-Rothenhusler; H. Fischer; S. Kipfstuhl; H. Miller

2002-10-01T23:59:59.000Z

346

A TWP-ICE High-Level Cloud Case Study  

NLE Websites -- All DOE Office Websites (Extended Search)

A TWP-ICE High-Level Cloud Case Study Mace, Gerald University of Utah Category: Field Campaigns The Tropical Warm Pool International Cloud Experiment (TWP ICE) was conducted near...

347

Application of Ice Nucleation Kinetics in Orographic Clouds  

Science Conference Proceedings (OSTI)

Ice nucleation by silver iodide-sodium iodide aerosol particles has been characterized in the Colorado State University isothermal cloud chamber using the techniques of chemical kinetics. Two separate mechanisms of condensation-freezing ice ...

Rochelle R. Blumenstein; Robert M. Rauber; Lewis O. Grant; William G. Finnegan

1987-10-01T23:59:59.000Z

348

Atmospheric Ice Crystals over the Antarctic Plateau in Winter  

Science Conference Proceedings (OSTI)

Falling ice crystals were collected daily on a gridded glass slide at South Pole Station, Antarctica, during the Antarctic winter of 1992 and were photographed through a microscope. Nine types of ice crystals are identified, which fall into three ...

Von P. Walden; Stephen G. Warren; Elizabeth Tuttle

2003-10-01T23:59:59.000Z

349

The mystery of ice crystal multiplication in a laboratory experiment  

Science Conference Proceedings (OSTI)

The paper addresses the problem of the large discrepancies between ice crystal concentrations in clouds and the number of ice nuclei in nearby clear air reported in published papers. Such discrepancies cannot always be explained, even by taking ...

Gianni Santachiara; Franco Belosi; Franco Prodi

350

An Improved Filter Technique for Ice Nucleus Measurements  

Science Conference Proceedings (OSTI)

No satisfactory standard field method has been established for the measurement of ice nucleus concentrations, although the filter technique is a promising candidate if the tendency for ice nucleus concentrations to decrease as the sample volume ...

Chi-Fan Shih; Takeshi Ohtake

1985-09-01T23:59:59.000Z

351

Production of Ice in Tropospheric Clouds: A Review  

Science Conference Proceedings (OSTI)

Ice in the troposphere affects a variety of processes, including the formation of precipitation, and cloud lifetime, albedo, dynamics, and electrification. A lack of understanding of the ways in which ice is created and multiplied hampers ...

Will Cantrell; Andrew Heymsfield

2005-06-01T23:59:59.000Z

352

Production of Ice Particles in Clouds Due to Aircraft Penetrations  

Science Conference Proceedings (OSTI)

Evidence is presented that the passage of an aircraft through supercooled clouds can produce high concentrations of ice particles (> 1000 L?1 at ?8C in one case). These Aircraft Produced Ice Particles (APIPs) are characterized, initially, both ...

Arthur L. Rangno; Peter V. Hobbs

1983-02-01T23:59:59.000Z

353

Simulated Atmospheric Rime Icing of Some Wind Speed Sensors  

Science Conference Proceedings (OSTI)

Four commercially available wind speed sensors have been tested in an icing wind tunnel to determine the relative susceptibility of each to atmospheric icing and to determine the influence of ire accumulations upon the operation and accuracy of ...

E. M. Gates; W. C. Thompson

1986-06-01T23:59:59.000Z

354

Estimating Intensity of Atmospheric Ice Accretion on Stationary Structures  

Science Conference Proceedings (OSTI)

The role of various atmospheric parameters in determining atmospheric ice accretion intensity on structures near the ground is examined theoretically, with an emphasis on glaze formation. Methods are presented for calculating the icing rate on ...

Lasse Makkonen

1981-05-01T23:59:59.000Z

355

Laboratory Measurements of Light Scattering by Single Levitated Ice Crystals  

Science Conference Proceedings (OSTI)

The authors have measured the differential light-scattering cross sections and phase functions of single vapor-grown hexagonal ice particles levitated in an electrodynamic balance. The ice particles, grown at temperatures ?5 > T > ?10C, were ...

Neil J. Bacon; Brian D. Swanson

2000-07-01T23:59:59.000Z

356

Isothermal Ice Crystallization Kinetics in the Gas-Diffusion...  

NLE Websites -- All DOE Office Websites (Extended Search)

Isothermal Ice Crystallization Kinetics in the Gas-Diffusion Layer of a Proton-Exchange-Membrane Fuel Cell Title Isothermal Ice Crystallization Kinetics in the Gas-Diffusion Layer...

357

Modeling the Effect of Ice Nuclei on ARM Clouds  

NLE Websites -- All DOE Office Websites (Extended Search)

Upper-Tropospheric Ice Water Content in TWP-ICE Xiping Zeng, Wei-Kuo Tao, Minghua Zhang, and Shaochen Xie March 31, 2009 Papers Published Recently * Zeng, X., W.-K. Tao, M. Zhang,...

358

SEAS Recognition Ceremony -May 10, 2009 Goggin Ice Arena  

E-Print Network (OSTI)

Page 1 SEAS Recognition Ceremony - May 10, 2009 Goggin Ice Arena Main Arena - Ceremony Location Oak Card Distribution, Student & Faculty Processional Line Up. Students: Upon arriving at Goggin Ice Arena

Dollar, Anna

359

Impacts of Ice Clouds on GPS Radio Occultation Measurements  

Science Conference Proceedings (OSTI)

Mathematical solutions accounting for the effects of liquid and ice clouds on the propagation of the GPS radio signals are first derived. The percentage contribution of ice water content (IWC) to the total refractivity increases linearly with the ...

X. Zou; S. Yang; P. S. Ray

2012-12-01T23:59:59.000Z

360

Scattering Phase Function of Bullet Rosette Ice Crystals  

Science Conference Proceedings (OSTI)

Ice crystals in cirrus frequently exhibit the shape of a bullet rosette composed of multiple bullets that radiate from a junction center. The scattering phase function of these ice crystals, pertinent to the radiation budget of cirrus, may differ ...

Jean Iaquinta; Harumi Isaka; Pascal Personne

1995-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Current Icing Potential: Algorithm Description and Comparison with Aircraft Observations  

Science Conference Proceedings (OSTI)

The current icing potential (CIP) algorithm combines satellite, radar, surface, lightning, and pilot-report observations with model output to create a detailed three-dimensional hourly diagnosis of the potential for the existence of icing and ...

Ben C. Bernstein; Frank McDonough; Marcia K. Politovich; Barbara G. Brown; Thomas P. Ratvasky; Dean R. Miller; Cory A. Wolff; Gary Cunning

2005-07-01T23:59:59.000Z

362

Aircraft Icing Measurements in East Coast Winter Storms  

Science Conference Proceedings (OSTI)

Analysis of the aircraft icing environments of East Coast winter storms have been made from 3 1 flights duringthe second Canadian Atlantic Storms Program. Microphysical parameters have been summarized and are compared to common icing intensity ...

Stewart G. Cober; George A. Isaac; J. W. Strapp

1995-01-01T23:59:59.000Z

363

Prediction of Vessel Icing for Near-Freezing Sea Temperatures  

Science Conference Proceedings (OSTI)

The operational NOAA categorical vessel icing algorithm is evaluated with regard to advances in understanding of the icing process and forecasting experience. When sea temperatures are <23C above the saltwater freezing point there is the ...

James E. Overland

1990-03-01T23:59:59.000Z

364

Changes in Ice Storm Impacts over Time: 18862000  

Science Conference Proceedings (OSTI)

Ice storms have a variety of negative effects on society. Through an analysis of newspaper accounts of nine exceptional ice storms, the most widespread and longest lasting impact is the loss of electrical power. Power outages also cause secondary ...

David A. Call

2010-01-01T23:59:59.000Z

365

Improving 30-Day Great Lakes Ice Cover Outlooks  

Science Conference Proceedings (OSTI)

Prediction of Great Lakes ice cover is important for winter operations and planning activities. Current 30-day forecasts use accumulated freezing degree-days (AFDDs) to identify similar historical events and associated ice cover. The authors ...

Raymond Assel; Sheldon Drobot; Thomas E. Croley II

2004-08-01T23:59:59.000Z

366

Retrieval of Ice Cloud Parameters Using a Microwave Imaging Radiometer  

Science Conference Proceedings (OSTI)

Based on the radiative transfer theory, the microwave radiance emanating from ice clouds at arbitrary viewing angles is expressed as an analytic function of the cloud ice water path (IWP), the particle effective diameter (De), and the particle ...

Fuzhong Weng; Norman C. Grody

2000-04-01T23:59:59.000Z

367

Evolutionary Optimization of an Ice Accretion Forecasting System  

Science Conference Proceedings (OSTI)

The ability to model and forecast accretion of ice on structures is very important for many industrial sectors. For example, studies conducted by the power transmission industry indicate that the majority of failures are caused by icing on ...

Pawel Pytlak; Petr Musilek; Edward Lozowski; Dan Arnold

2010-07-01T23:59:59.000Z

368

Water-Cooled Ice Machines, Purchasing Specifications for Energy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Ice Makers. b) Measured in accordance with ARI Standard 810-2003. Does not include condenser water use. Buying Energy-Efficient Water-Cooled Ice Machines Several types of...

369

A New Horizontal Gradient, Continuous Flow, Ice Thermal Diffusion Chamber  

Science Conference Proceedings (OSTI)

A continuous-flow, horizontal gradient, ice thermal diffusion chamber has been developed and tested for heterogeneous ice nucleation of aerosol particles under accurately controlled supersaturations and supercooling in the absence of a substrate. ...

E. M. Tomlinson; N. Fukuta

1985-12-01T23:59:59.000Z

370

The Sublimation of Dry Ice Pellets Used for Cloud Seeding  

Science Conference Proceedings (OSTI)

A numerical model has been developed to investigate the sublimation rate of cylindrical dry ice pellets in clear and cloudy air. Experiments conducted in the University of Alberta FROST icing-wind tunnel were used to make comparisons with the ...

B. Kochtubajda; E. P. Lozowski

1985-06-01T23:59:59.000Z

371

Cloud Ice Crystal Classification Using a 95-GHz Polarimetric Radar  

Science Conference Proceedings (OSTI)

Two algorithms are presented for ice crystal classification using 95-GHz polarimetric radar observables and air temperature (T). Both are based on a fuzzy logic scheme. Ice crystals are classified as columnar crystals (CC), planar crystals (PC), ...

K. Aydin; J. Singh

2004-11-01T23:59:59.000Z

372

Antarctic Sea Ice Extent Variability and Its Global Connectivity  

Science Conference Proceedings (OSTI)

This study statistically evaluates the relationship between Antarctic sea ice extent and global climate variability. Temporal cross correlations between detrended Antarctic sea ice edge (SIE) anomaly and various climate indices are calculated. ...

Xiaojun Yuan; Douglas G. Martinson

2000-05-01T23:59:59.000Z

373

Observations of Thermohaline Convection adjacent to Brunt Ice Shelf  

Science Conference Proceedings (OSTI)

Observations were made of ocean microstructure and horizontal currents adjacent to Brunt Ice Shelf in the southeastern Weddell Sea. Periods of in situ supercooled water extending as deep as 65 m were associated with ice nucleation and frazil ...

Ilker Fer; Keith Makinson; Keith W. Nicholls

2012-03-01T23:59:59.000Z

374

Aircraft Observations of Ice Crystal Evolution in an Altostratus Cloud  

Science Conference Proceedings (OSTI)

Observations from a Lagrangian spiral descent within altostratus cloud associated with a cold front were used to study the evolution of ice particle spectra by following populations of ice crystals as they fell through the cloud. The flight track ...

Paul R. Field

1999-06-01T23:59:59.000Z

375

Late Pleistocene Ice Age Scenarios Based on Observational Evidence  

Science Conference Proceedings (OSTI)

Ice age scenarios for the last glacial-interglacial cycle, based on observations of Boyle and Keigwin concerning the North Atlantic thermohaline circulation and of Barnola et al. concerning atmospheric C02 variations derived from the Vostok ice ...

G. DeBlonde; W. R. Peltier

1993-04-01T23:59:59.000Z

376

Wave-induced Roll Motion beneath an Ice Cover  

Science Conference Proceedings (OSTI)

A pair of gravity waves propagating at oblique angles along the sea-ice interface in a viscous, rotating ocean is studied theoretically. The motion is described by a Lagrangian formulation. Two theoretical models of the ice cover are considered. ...

Arne Melsom

1992-01-01T23:59:59.000Z

377

Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Electric Ice Electric Ice Resurfacers Improve Air Quality in Minnesota to someone by E-mail Share Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Facebook Tweet about Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Twitter Bookmark Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Google Bookmark Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Delicious Rank Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on Digg Find More places to share Alternative Fuels Data Center: Electric Ice Resurfacers Improve Air Quality in Minnesota on AddThis.com... Sept. 14, 2013

378

May 28, 2007 Middleware in Modern High Performance Computing System Architectures 1/20 Middleware in Modern High Performance  

E-Print Network (OSTI)

May 28, 2007 Middleware in Modern High Performance Computing System Architectures 1/20 Middleware in Modern High Performance Computing System Architectures Christian Engelmann1,2, Hong Ong1, Stephen L 28, 2007 Middleware in Modern High Performance Computing System Architectures 2/20 Talk Outline

Engelmann, Christian

379

SNAP II REACTOR CORE MATERIALS  

SciTech Connect

A survey was made to select the construction materials for the SDR-1 reactor core vessel and grid plates. Hastelloy C was selected for the reactor vessel, top grid plate, and bottom grid plate. Inconel X was selected for the core hold-down springs. (C.J.G.)

Facha, J.V.

1960-04-11T23:59:59.000Z

380

Ice Ball Impact Testing of Roofing Materials - Programmaster.org  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2010. Symposium, Failure Analysis and Prevention. Presentation Title, Ice Ball Impact Testing of...

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Using Ice to Make Nature Inspired Hybrid Materials - Programmaster ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2011. Symposium, Surface Properties of Biomaterials. Presentation Title, Using Ice to Make Nature...

382

Current Research on Medical Slurry Cooling: Medical Ice Slurry...  

NLE Websites -- All DOE Office Websites (Extended Search)

Applications Homeland Security Applications Biomedical Applications Medical Ice Slurry Coolants for Inducing Targeted-OrganTissue Protective Cooling Technology...

383

Technology Description: Medical Ice Slurry Coolants for Inducing...  

NLE Websites -- All DOE Office Websites (Extended Search)

Applications Homeland Security Applications Biomedical Applications Medical Ice Slurry Coolants for Inducing Targeted-OrganTissue Protective Cooling Technology...

384

An update on land-ice modeling in the CESM  

Science Conference Proceedings (OSTI)

Mass loss from land ice, including the Greenland and Antarctic ice sheets as well as smaller glacier and ice caps, is making a large and growing contribution to global sea-level rise. Land ice is only beginning to be incorporated in climate models. The goal of the Land Ice Working Group (LIWG) is to develop improved land-ice models and incorporate them in CESM, in order to provide useful, physically-based sea-level predictions. LJWG efforts to date have led to the inclusion of a dynamic ice-sheet model (the Glimmer Community Ice Sheet Model, or Glimmer-CISM) in the Community Earth System Model (CESM), which was released in June 2010. CESM also includes a new surface-mass-balance scheme for ice sheets in the Community Land Model. Initial modeling efforts are focused on the Greenland ice sheet. Preliminary results are promising. In particular, the simulated surface mass balance for Greenland is in good agreement with observations and regional model results. The current model, however, has significant limitations: The land-ice coupling is one-way; we are using a serial version of Glimmer-CISM with the shallow-ice approximation; and there is no ice-ocean coupling. During the next year we plan to implement two-way coupling (including ice-ocean coupling with a dynamic Antarctic ice sheet) with a parallel , higher-order version of Glimmer-CISM. We will also add parameterizations of small glaciers and ice caps. With these model improvements, CESM will be able to simulate all the major contributors to 21st century global sea-level rise. Results of the first round of simulations should be available in time to be included in the Fifth Assessment Report (ARS) of the Intergovernmental Panel on Climate Change.

Lipscomb, William H [Los Alamos National Laboratory

2011-01-18T23:59:59.000Z

385

Money, Morals, and Modernity: Making Sense of Same-Sex Sexualities in Malawi  

E-Print Network (OSTI)

Money, Morals, and Modernity: Making Sense of Same-Sexhomosexuality is fundamentally Money, Morals, and Modernity:positions on the trial. Money, Morals, and Modernity: Making

McKay, Tara

2012-01-01T23:59:59.000Z

386

Former Soviet refineries face modernization, restructuring  

Science Conference Proceedings (OSTI)

A massive modernization and restructuring program is under way in the refining sector of Russia and other former Soviet republics. Economic reforms and resulting economic dislocation following the collapse of the Soviet Union has left refineries in the region grappling with a steep decline and changes in product demand. At the same time, rising oil prices and an aging, dilapidated infrastructure promise a massive shakeout. Even as many refineries in the former Soviet Union (FSU) face possible closure because they are running at a fraction of capacity, a host of revamps, expansions, and grass roots refineries are planned or under way. The paper discusses plans.

Not Available

1993-11-29T23:59:59.000Z

387

Microsoft Word - IronCore  

NLE Websites -- All DOE Office Websites (Extended Search)

November/December 2013 November/December 2013 Percolation Explains How Earth's Iron Core Formed The formation of Earth's metallic core, which makes up a third of our planet's mass, represents the most significant differentiation event in Earth's history. Earth's present layered structure with a metallic core and an overlying silicate mantle would have required mechanisms to separate iron alloy from a silicate phase. Percolation of liquid iron alloy moving through a solid silicate matrix (much as water percolates through porous rock, or even coffee grinds) has been proposed as a possible model for core formation (Figure 1). Many previous experimental results have ruled out percolation as a major core formation mechanism for Earth at the relatively lower pressure conditions in the upper mantle, but

388

Greenland Ice Sheet Mass Balance Reconstruction. Part III: Marine Ice Loss and Total Mass Balance (18402010)  

Science Conference Proceedings (OSTI)

Greenland ice sheet mass loss to the marine environment occurs by some combination of iceberg calving and underwater melting (referred to here as marine ice loss, LM). This study quantifies the relation between LM and meltwater runoff (R) at the ...

Jason E. Box; William Colgan

2013-09-01T23:59:59.000Z

389

Estimation of Thin Ice Thickness and Detection of Fast Ice from SSM/I Data in the Antarctic Ocean  

Science Conference Proceedings (OSTI)

Antarctic coastal polynyas are important areas of high sea ice production and dense water formation, and thus their detection including an estimate of thin ice thickness is essential. In this paper, the authors propose an algorithm that estimates ...

Takeshi Tamura; Kay I. Ohshima; Thorsten Markus; Donald J. Cavalieri; Sohey Nihashi; Naohiko Hirasawa

2007-10-01T23:59:59.000Z

390

Greenland ice sheet mass balance reconstruction. Part III: marine ice loss and total mass balance (1840-2010)  

Science Conference Proceedings (OSTI)

Greenland ice sheet mass loss to the marine environment occurs by some combination of iceberg calving and underwater melting (referred to here as marine ice loss, LM). This study quantifies the relation between LM and meltwater runoff (R) at the ...

Jason E. Box; William Colgan

391

Modeling the fracture of ice sheets on parallel computers.  

SciTech Connect

The objective of this project is to investigate the complex fracture of ice and understand its role within larger ice sheet simulations and global climate change. At the present time, ice fracture is not explicitly considered within ice sheet models due in part to large computational costs associated with the accurate modeling of this complex phenomena. However, fracture not only plays an extremely important role in regional behavior but also influences ice dynamics over much larger zones in ways that are currently not well understood. Dramatic illustrations of fracture-induced phenomena most notably include the recent collapse of ice shelves in Antarctica (e.g. partial collapse of the Wilkins shelf in March of 2008 and the diminishing extent of the Larsen B shelf from 1998 to 2002). Other fracture examples include ice calving (fracture of icebergs) which is presently approximated in simplistic ways within ice sheet models, and the draining of supraglacial lakes through a complex network of cracks, a so called ice sheet plumbing system, that is believed to cause accelerated ice sheet flows due essentially to lubrication of the contact surface with the ground. These dramatic changes are emblematic of the ongoing change in the Earth's polar regions and highlight the important role of fracturing ice. To model ice fracture, a simulation capability will be designed centered around extended finite elements and solved by specialized multigrid methods on parallel computers. In addition, appropriate dynamic load balancing techniques will be employed to ensure an approximate equal amount of work for each processor.

Waisman, Haim (Columbia University); Bell, Robin (Columbia University); Keyes, David (Columbia University); Boman, Erik Gunnar; Tuminaro, Raymond Stephen

2010-03-01T23:59:59.000Z

392

Interannual variability of arctic landfast ice between 1976 and 2007  

Science Conference Proceedings (OSTI)

Analysis of weekly sea ice charts produced by the U.S. National Ice Center from 1976 to 2007 indicates large interannual variations in the averaged winter landfast ice extent around the Arctic Basin. During the 32-year period of the record, ...

Yanling Yu; Harry Stern; Charles Fowler; Florence Fetterer; James Maslanik

393

Is the Missing Ultra-Red Material Colorless Ice?  

E-Print Network (OSTI)

The extremely red colors of some transneptunian objects and Centaurs are not seen among the Jupiter family comets which supposedly derive from them. Could this mismatch result from sublimation loss of colorless ice? Radiative transfer models show that mixtures of volatile ice and nonvolatile organics could be extremely red, but become progressively darker and less red as the ice sublimates away.

Grundy, W M

2008-01-01T23:59:59.000Z

394

Is the Missing Ultra-Red Material Colorless Ice?  

E-Print Network (OSTI)

The extremely red colors of some transneptunian objects and Centaurs are not seen among the Jupiter family comets which supposedly derive from them. Could this mismatch result from sublimation loss of colorless ice? Radiative transfer models show that mixtures of volatile ice and nonvolatile organics could be extremely red, but become progressively darker and less red as the ice sublimates away.

W. M. Grundy

2008-11-14T23:59:59.000Z

395

District cooling: Phase 2, Direct freeze ice slurry system testing  

DOE Green Energy (OSTI)

The objectives of this research are to: extend the range of pressure drop data for ice-water slurry flows; and design and build a prototypical ice slurry distribution system which demonstrates ice slurry handling at an end user's heat exchanger, without sending ice slurry directly through the heat exchanger. Previous research (Phase 1) conducted by CBI under DOE Contract FG01-86CE26564 has shown a friction reducing effect of ice crystals in water flow. The results of this work demonstrated a 40% reduction in pump power required to move an ice-water slurry versus the same mass flow of water only. In addition to lower pressure drop, pumping ice slurries is advantageous because of the large latent and sensible heat cooling capacity stored in the ice compared to only sensible heat in chilled water. For example, an ice-water slurry with a 20% ice fraction (by mass) has a mass flow rate that is 70% less than the mass flow rate required for a chilled water system cooling and equivalent load. The greatly reduced mass flow combined with the friction reducing effects of ice-water slurries results in a total savings of 83% in pumping power. Therefore, a substantial savings potential exists for capital costs and system operating costs in ice-water slurry district cooling systems.

Winters, P.J.

1990-01-01T23:59:59.000Z

396

Snow and Ice Field Handbook for Snowplow Operators  

E-Print Network (OSTI)

Minnesota Snow and Ice Control Field Handbook for Snowplow Operators Second Revision Manual Number Local Road Research Board #12;#12;Minnesota Snow and Ice Control Field Handbook for Snowplow Operators for an Effective Anti-icing Program, produced by the Utah LTAP Center. Thanks to the following sponsors

Minnesota, University of

397

Modeling Landfast Sea Ice by Adding Tensile Strength  

Science Conference Proceedings (OSTI)

Landfast ice is sea ice that forms and remains fixed along a coast, where it is either attached to the shore or held between shoals or grounded icebergs. The current generation of sea ice models is not capable of reproducing certain aspects of ...

Christof Knig Beatty; David M. Holland

2010-01-01T23:59:59.000Z

398

AIM-94-0800 Effect of Initial Ice Roughness  

E-Print Network (OSTI)

ice accretion phase. Using5close-up photography and videography Hansman has studied the initial phase of ice accretion. At warm temperatures, a runback zone aft of the rough zone is observed. WaterAIM-94-0800 Effect of Initial Ice Roughness on Airfoil Aerodynamics M. Bragg, M. Kerho and M

Bragg, Michael B.

399

Dynamics of Ice Nucleation on Water Repellent Surfaces Azar Alizadeh,*,  

E-Print Network (OSTI)

for nonicing applications. 1. INTRODUCTION Ice accretion on surfaces of aircraft, wind turbine blades, oil on surfaces with various wettabilities during and subsequent to single water droplet impact. We use surface wetting and icing phase transition events. Our methodology provides insights into multiple ice

Dhinojwala, Ali

400

Forecast of Icing Events at a Wind Farm in Sweden  

Science Conference Proceedings (OSTI)

This paper introduces a method to identify icing events using a physical icing model, driven by atmospheric data from the WRF model, and applies it to a wind park in Sweden. Observed wind park icing events were identified by deviation from an ...

Neil Davis; Andrea N. Hahmann; Niels-Erik Clausen; Mark agar

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Effective Radius of Ice Particles in Cirrus and Contrails  

Science Conference Proceedings (OSTI)

This paper discusses the ratio C between the volume mean radius and the effective radius of ice particles in cirrus and contrails. The volume mean radius is proportional to the third root of the ratio between ice water content and number of ice ...

U. Schumann; B. Mayer; K. Gierens; S. Unterstrasser; P. Jessberger; A. Petzold; C. Voigt; J-F. Gayet

2011-02-01T23:59:59.000Z

402

Long-Term Ice Variability in Arctic Marginal Seas  

Science Conference Proceedings (OSTI)

Examination of records of fast ice thickness (19362000) and ice extent (19002000) in the Kara, Laptev, East Siberian, and Chukchi Seas provide evidence that long-term ice thickness and extent trends are small and generally not statistically ...

Igor V. Polyakov; Genrikh V. Alekseev; Roman V. Bekryaev; Uma S. Bhatt; Roger Colony; Mark A. Johnson; Valerii P. Karklin; David Walsh; Alexander V. Yulin

2003-06-01T23:59:59.000Z

403

A THREE-PHASE CHEMICAL MODEL OF HOT CORES: THE FORMATION OF GLYCINE  

SciTech Connect

A new chemical model is presented that simulates fully coupled gas-phase, grain-surface, and bulk-ice chemistry in hot cores. Glycine (NH{sub 2}CH{sub 2}COOH), the simplest amino acid, and related molecules such as glycinal, propionic acid, and propanal, are included in the chemical network. Glycine is found to form in moderate abundance within and upon dust-grain ices via three radical-addition mechanisms, with no single mechanism strongly dominant. Glycine production in the ice occurs over temperatures {approx}40-120 K. Peak gas-phase glycine fractional abundances lie in the range 8 Multiplication-Sign 10{sup -11}-8 Multiplication-Sign 10{sup -9}, occurring at {approx}200 K, the evaporation temperature of glycine. A gas-phase mechanism for glycine production is tested and found insignificant, even under optimal conditions. A new spectroscopic radiative-transfer model is used, allowing the translation and comparison of the chemical-model results with observations of specific sources. Comparison with the nearby hot-core source NGC 6334 IRS1 shows excellent agreement with integrated line intensities of observed species, including methyl formate. The results for glycine are consistent with the current lack of a detection of this molecule toward other sources; the high evaporation temperature of glycine renders the emission region extremely compact. Glycine detection with ALMA is predicted to be highly plausible, for bright, nearby sources with narrow emission lines. Photodissociation of water and subsequent hydrogen abstraction from organic molecules by OH, and NH{sub 2}, are crucial to the buildup of complex organic species in the ice. The inclusion of alternative branches within the network of radical-addition reactions appears important to the abundances of hot-core molecules; less favorable branching ratios may remedy the anomalously high abundance of glycolaldehyde predicted by this and previous models.

Garrod, Robin T., E-mail: rgarrod@astro.cornell.edu [Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853-6801 (United States)

2013-03-01T23:59:59.000Z

404

Tracking of Ice Edges and Ice Floes by Wavelet Analysis of SAR Images  

Science Conference Proceedings (OSTI)

This paper demonstrates the use of wavelet transforms in the tracking of sequential ice features in the ERS-1 synthetic aperture radar (SAR) imagery, especially in situations where feature correlation techniques fail to yield reasonable results. ...

Antony K. Liu; Seelye Martin; Ronald Kwok

1997-10-01T23:59:59.000Z

405

Ice Crystals Produced by Expansion: Experiments and Application to Aircraft-produced Ice  

Science Conference Proceedings (OSTI)

The production of ice crystals as a result of the expansion and cooling of moist air was investigated by laboratory experiment. In particular, the warmest expanded air temperature that produces crystals was sought as a function of the initial ...

T. C. Foster; J. Hallett

1993-04-01T23:59:59.000Z

406

Snow Depth on Arctic Sea Ice  

Science Conference Proceedings (OSTI)

Snow depth and density were measured at Soviet drifting stations on multiyear Arctic sea ice. Measurements were made daily at fixed stakes at the weather station and once- or thrice-monthly at 10-m intervals on a line beginning about 500 m from ...

Stephen G. Warren; Ignatius G. Rigor; Norbert Untersteiner; Vladimir F. Radionov; Nikolay N. Bryazgin; Yevgeniy I. Aleksandrov; Roger Colony

1999-06-01T23:59:59.000Z

407

Arctic Sea Ice Albedo from AVHRR  

Science Conference Proceedings (OSTI)

The seasonal cycle of surface albedo of sea ice in the Arctic is estimated from measurements made with the Advanced Very High Resolution Radiometer (AVHRR) on the polar-orbiting satellites NOAA-10 and NOAA-11. The albedos of 145 200-km-square ...

R. W. Lindsay; D. A. Rothrock

1994-11-01T23:59:59.000Z

408

Visual simulation of ice crystal growth  

Science Conference Proceedings (OSTI)

The beautiful, branching structure of ice is one of the most striking visual phenomena of the winter landscape. Yet there is little study about modeling this effect in computer graphics. In this paper, we present a novel approach for visual simulation ...

Theodore Kim; Ming C. Lin

2003-07-01T23:59:59.000Z

409

Piling aids gravity in ice resistance  

SciTech Connect

The design and construction of foundations for offshore drilling platforms are described. To allow the base contact areas and ballast requirements to be minimized, thus allowing minimization of ice forces, a combined shallow mat and pile or spud founded system is proposed.

Bea, R.G.; Nour-Omid, S.; Coull, T.B.; Potter, R.E.; Bivens, H.R.

1984-08-01T23:59:59.000Z

410

Winter Icing and Storms Project (WISP)  

Science Conference Proceedings (OSTI)

Field studies in support of the Winter Icing and Storms Project (WISP) were conducted in the Colorado Front Range area from 1 February to 31 March 1990(WISP90) and from 15 January to 5 April 1991 (WISP91). The main goals of the project are to ...

Roy Rasmussen; Marcia Politovich; Wayne Sand; Greg Stossmeister; Ben Bernstein; Kim Elmore; John Marwitz; John McGinley; John Smart; Ed Westwater; B. Boba Stankov; Roger Pielke; Steve Rutledge; Doug Wesley; Nick Powell; Don Burrows

1992-07-01T23:59:59.000Z

411

Dynamics and energetics of the cloudy boundary layer in simulations of off-ice flow in the marginal ice zone  

E-Print Network (OSTI)

kinetic energy even in the present case where very strong surface heat fluxes occur. Ice-phase. Inclusion of the ice phase significantly affected the radiative budget as compared to purely liquid clouds, illustrating the importance of ice-phase­radiative couplings for accurate simulations of arctic clouds

Harrington, Jerry Y.

412

Optimization of a Sea Ice Model Using Basinwide Observations of Arctic Sea Ice Thickness, Extent, and Velocity  

Science Conference Proceedings (OSTI)

A stand-alone sea ice model is tuned and validated using satellite-derived, basinwide observations of sea ice thickness, extent, and velocity from the years 1993 to 2001. This is the first time that basin-scale measurements of sea ice thickness ...

Paul A. Miller; Seymour W. Laxon; Daniel L. Feltham; Douglas J. Cresswell

2006-04-01T23:59:59.000Z

413

The control of ice storage systems  

SciTech Connect

The tradeoffs between chiller and tank capacity for different load profiles and two storage strategies are evaluated in this article. Air-conditioning systems that employ ice storage incorporate equipment that produces ice during one period and melts it in another period to provide cooling for the building. In designing such systems, there are two basic strategies to consider: full-load and partial-load. In a full-load strategy, the entire daytime cooling energy is met using only cooling supplied by the ice storage tank. In a partial-load strategy, the chiller and the storage are used simultaneously to meet the load. With a full-load strategy, the tank capacity must be sufficient to meet the entire energy requirement, and the chiller capacity must be sufficient to recharge the tank during the night-time. In a partial-load strategy, a smaller chiller and tank than that for a full-load strategy are required, and there are many combinations of the two that will meet a given building load. The design and sizing of the components of an ice storage system depend not only on the desired strategy and total daily cooling energy but also on other factors. The maximum load dictates the amount of cooling required at any time. The cooling rate provided by an ice filled tank is not constant, but decreases as the ice inventory drops, and the time that the maximum load occurs is important. Thus, there is an interaction between the building load profile and tank size. In addition, the flow rate of the circulating fluid through the tank and the cooling coil may limit the supply air temperatures that may be reached. Thus, the circulating fluid flow rate must be sufficient to provide the desired rates of cooling to the building. The challenge to the design engineer is to size the components to meet the building load at all times at the lowest system cost. Effective designs must acknowledge the dynamic performance of the ice storage system.

Carey, C.W. [Amana Corp., IA (United States); Mitchell, J.W.; Beckman, W.A. [Univ. of Wisconsin, Madison, WI (United States)

1995-05-01T23:59:59.000Z

414

An Investigation of Laboratory-Grown "Ice Spikes"  

E-Print Network (OSTI)

We have investigated the formation of 10-50 mm long ``ice spikes'' that sometimes appear on the free surface of water when it solidifies. By freezing water under different conditions, we measured the probability of ice spike formation as a function of: 1) the air temperature in the freezing chamber, 2) air motion in the freezing chamber (which promotes evaporative cooling), 3) the quantity of dissolved salts in the water, and 4) the size, shape, and composing material of the freezing vessel. We found that the probability of ice spike formation is greatest when the air temperature is near -7 C, the water is pure, and the air in the freezing chamber is moving. Even small quantities of dissolved solids greatly reduce the probability of ice spike formation. Under optimal conditions, approximately half the ice cubes in an ordinary ice cube tray will form ice spikes. Guided by these observations, we have examined the Bally-Dorsey model for the formation of ice spikes. In this model, the density change during solidification forces supercooled water up through a hollow ice tube, where it freezes around the rim to lengthen the tube. We propose that any dissolved solids in the water will tend to concentrate at the tip of a growing ice spike and inhibit its growth. This can qualitatively explain the observation that ice spikes do not readily form using water containing even small quantities of dissolved solids.

K. G. Libbrecht; K. Lui

2003-10-12T23:59:59.000Z

415

GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS, VOL. ???, XXXX, DOI:10.1029/, Effect of a metallic core on transient geomagnetic induction  

E-Print Network (OSTI)

on transient geomagnetic induction J. Vel´imsk´y,1 , C. C. Finlay2 1 Department of Geophysics, Faculty, 2:01pm D R A F T #12;X - 2 VEL´IMSK ´Y AND FINLAY: EFFECT OF CORE ON GEOMAGNETIC INDUCTION Abstract be correctly taken into account when mod- elling the geomagnetic field using modern observatory and satellite

Velímsky, Jakub

416

Photophysiology and cellular composition of sea ice algae  

SciTech Connect

The productivity of sea ice algae depends on their physiological capabilities and the environmental conditions within various microhabitats. Pack ice is the dominant form of sea ice, but the photosynthetic activity of associated algae has rarely been studied. Biomass and photosynthetic rates of ice algae of the Weddell-Scotia Sea were investigated during autumn and winter, the period when ice cover grows from its minimum to maximum. Biomass-specific photosynthetic rates typically ranged from 0.3 to 3.0 {mu}g C {center dot} {mu}g chl{sup {minus}1} {center dot} h{sup {minus}1} higher than land-fast ice algae but similar to Antarctic phytoplankton. Primary production in the pack ice during winter may be minor compared to annual phytoplankton production, but could represent a vital seasonal contribution to the Antarctic ecosystem. Nutrient supply may limit the productivity of ice algae. In McMurdo Sound, congelation ice algae appeared to be more nutrient deficient than underlying platelet ice algae based on: lower nitrogen:carbon, chlorophyll:carbon, and protein:carbohydrate; and {sup 14}C-photosynthate distribution to proteins and phospholipids was lower, while distribution to polysaccharides and neutral lipids was higher. Depletion of nitrate led to decreased nitrogen:carbon, chlorophyll:carbon, protein:carbohydrate, and {sup 14}C-photosynthate to proteins. Studied were conducted during the spring bloom; therefore, nutrient limitation may only apply to dense ice algal communities. Growth limiting conditions may be alleviated when algae are released into seawater during the seasonal recession of the ice cover. To continue growth, algae must adapt to the variable light field encountered in a mixed water column. Photoadaptation was studied in surface ice communities and in bottom ice communities.

Lizotte, M.P.

1989-01-01T23:59:59.000Z

417

Optimization of Core Point Detection in Fingerprints  

Science Conference Proceedings (OSTI)

This paper compares and documents the work of an optimized fingerprint core point determination algorithm. This work focuses to present an efficient and precise way for the extraction of core point. Core Point is detected using least mean square algorithm. ...

Nabeel Younus Khan; M. Younus Javed; Naveed Khattak; Umer Munir Yongjun Chang

2007-12-01T23:59:59.000Z

418

Property:ModernGeoFeatures | Open Energy Information  

Open Energy Info (EERE)

ModernGeoFeatures ModernGeoFeatures Jump to: navigation, search Property Name ModernGeoFeatures Property Type Page Description Describes modern surface manifestations present in vicinity of the resource area (e.g. hot springs, fumaroles, mudpots, geysers). See also Modern_Geothermal_Features This is a property of type Page. Subproperties This property has the following 12 subproperties: B Beowawe Hot Springs Geothermal Area Brady Hot Springs Geothermal Area D Desert Peak Geothermal Area H Heber Geothermal Area L Lightning Dock Geothermal Area R Raft River Geothermal Area Roosevelt Hot Springs Geothermal Area S Salton Sea Geothermal Area San Emidio Desert Geothermal Area S cont. Soda Lake Geothermal Area Steamboat Springs Geothermal Area Stillwater Geothermal Area Pages using the property "ModernGeoFeatures"

419

Global Simulations of Ice nucleation and Ice Supersaturation with an Improved Cloud Scheme in the Community Atmosphere Model  

Science Conference Proceedings (OSTI)

A process-based treatment of ice supersaturation and ice-nucleation is implemented in the National Center for Atmospheric Research (NCAR) Community Atmosphere Model (CAM). The new scheme is designed to allow (1) supersaturation with respect to ice, (2) ice nucleation by aerosol particles and (3) ice cloud cover consistent with ice microphysics. The scheme is implemented with a 4-class 2 moment microphysics code and is used to evaluate ice cloud nucleation mechanisms and supersaturation in CAM. The new model is able to reproduce field observations of ice mass and mixed phase cloud occurrence better than previous versions of the model. Simulations indicate heterogeneous freezing and contact nucleation on dust are both potentially important over remote areas of the Arctic. Cloud forcing and hence climate is sensitive to different formulations of the ice microphysics. Arctic radiative fluxes are sensitive to the parameterization of ice clouds. These results indicate that ice clouds are potentially an important part of understanding cloud forcing and potential cloud feedbacks, particularly in the Arctic.

Gettelman, A.; Liu, Xiaohong; Ghan, Steven J.; Morrison, H.; Park, Sungsu; Conley, Andrew; Klein, Stephen A.; Boyle, James; Mitchell, David; Li, J-L F.

2010-09-28T23:59:59.000Z

420

Ice slurry cooling research: Microscale study of ice particles characteristics, role of freezing point depressant, and influence on slurry fluidity  

DOE Green Energy (OSTI)

The influences of freezing-point-depressants on ice slurry characteristics in the form of ice slurry fluidity and on the microscale ice particle features are studied. The results identify microscale features of ice particles such as surface roughness that greatly influence slurry fluidity that are altered favorably by the use of a freezing point depressant. The engineering of a workable and efficient ice slurry cooling system depends very strongly on the characteristics of the individual ice particles in the slurry and, in turn, on the method of ice production. Findings from this study provide guidance on the fluidity and handleability of slurry produced by several methods currently under development and already many achieved.

Hayashi, K.; Kasza, K.

2000-05-03T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Sandia National Laboratories: Research: Facilities: Annular Core...  

NLE Websites -- All DOE Office Websites (Extended Search)

Annular Core Research Reactor facility Nuclear science photo At the Annular Core Research Reactor (ACRR) facility, Sandia researchers can subject various test objects to a mixed...

422

Audit of Departmental Integrated Standardized Core Accounting...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Audit of Departmental Integrated Standardized Core Accounting System (DISCAS) Operations at Selected Field Sites, AP-FS-97-02 Audit of Departmental Integrated Standardized Core...

423

Leading the Modernization of the Electricity Grid through Transformational  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Leading the Modernization of the Electricity Grid through Leading the Modernization of the Electricity Grid through Transformational Research and Partnerships Leading the Modernization of the Electricity Grid through Transformational Research and Partnerships A presentation given by the Office of Electricity on expansion of the Nation's transmission infrastructure; and integration of variable renewable generation into the routine operation of the power system. Leading the Modernization of the Electricity Grid through Transformational Research and Partnerships More Documents & Publications Statement of Patricia Hoffman, Princiipal Deputy Assistant Secretary for Electricity Delivery and Energy Reliability, U.S. Department of Energy Before the United States House of Representatives House Appropriations Subcommittee on Energy and Water Develop

424

Workshop on Diamonds for Modern Light Sources | Advanced Photon...  

NLE Websites -- All DOE Office Websites (Extended Search)

to Argonne Committees and Contacts diamond Workshop on Diamonds for Modern Light Sources May 5 and 6, 2011 Advanced Photon Source, Argonne National Laboratory Room 401A1100...

425

Performance and supply of fluids in a modern gas turbine.  

E-Print Network (OSTI)

??This thesis considers the role fluids play in improving the efficiency and reducing the environmental impact of modern gas turbines. This includes gas turbines used (more)

Askins, John Stephen

2010-01-01T23:59:59.000Z

426

Effect of Research on Lighting for Modern Dance.  

E-Print Network (OSTI)

??AbstractEffect of Research on Lighting for Modern Danceby Andrew Grabowski Theatre is made up of a large number of collaborating artists each of which performs (more)

Grabowski, Andrew

2013-01-01T23:59:59.000Z

427

Applying and analyzing robust modern control on uncertain hydraulic systems .  

E-Print Network (OSTI)

??In this work modern robust control systems are designed and compared to standard techniques for a hydraulic implement system. The system includes an independent metering (more)

Bax, Brian

2006-01-01T23:59:59.000Z

428

Obama Administration Announces Job-Creating Grid Modernization...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

October 5, 2011 - 11:52am Addthis Washington, D.C. - Demonstrating its commitment to job creation and modernizing America's infrastructure, the Obama Administration today...

429

6.161 Modern Optics Project Laboratory, Fall 2002  

E-Print Network (OSTI)

Lectures, laboratory exercises, and projects in modern optics. Topics: polarization properties of light, reflection and refraction, coherence and interference, Fraunhofer and Fresnel diffraction, imaging and transforming ...

Warde, Cardinal

430

MANAGING MODERNIZATION OF NUCLEAR POWER PLANT INSTRUMENTATION AND CONTROL SYSTEMS  

E-Print Network (OSTI)

Managing modernization of nuclear power plant instrumentation and control systems February 2004The originating Section of this publication in the IAEA was:

unknown authors

2003-01-01T23:59:59.000Z

431

Leading the Modernization of the Electricity Grid through Transformati...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and integration of variable renewable generation into the routine operation of the power system. Leading the Modernization of the Electricity Grid through Transformational...

432

under a Creative Commons License. Climate of the Past Ice-driven CO2 feedback on ice volume  

E-Print Network (OSTI)

Abstract. The origin of the major ice-sheet variations during the last 2.7 million years is a long-standing mystery. Neither the dominant 41 000-year cycles in ?18O/ice-volume during the late Pliocene and early Pleistocene nor the late-Pleistocene oscillations near 100 000 years is a linear (Milankovitch) response to summer insolation forcing. Both responses must result from non-linear behavior within the climate system. Greenhouse gases (primarily CO2) are a plausible source of the required non-linearity, but confusion has persisted over whether the gases force ice volume or are a positive feedback. During the last several hundred thousand years, CO2 and ice volume (marine ?18O) have varied in phase at the 41 000-year obliquity cycle and nearly in phase within the ?100 000-year band. This timing rules out greenhouse-gas forcing of a very slow ice response and instead favors ice control of a fast CO2 response. In the schematic model proposed here, ice sheets responded linearly to insolation forcing at the precession and obliquity cycles prior to 0.9 million years ago, but CO2 feedback amplified the ice response at the 41 000-year period by a factor of approximately two. After 0.9 million years ago, with slow polar cooling, ablation weakened. CO2 feedback continued to amplify ice-sheet growth every 41 000 years, but weaker ablation permitted some ice to survive insolation maxima of low intensity. Step-wise growth of these longerlived ice sheets continued until peaks in northern summer insolation produced abrupt deglaciations every ?85 000 to ?115 000 years. Most of the deglacial ice melting resulted from the same CO2/temperature feedback that had built the ice sheets. Several processes have the northern geographic origin, as well as the requisite orbital tempo and phasing, to be candidate mechanisms for ice-sheet control of CO2 and their own feedback. 1

W. F. Ruddiman

2006-01-01T23:59:59.000Z

433

Residential Utility Core Wall System - ResCore  

SciTech Connect

This paper describes activities associated with the RESidential utility CORE wall system (ResCore) developed by students and faculty in the Department of Industrial Design at Auburn University between 1996 and 1998. These activities analyize three operational prototype units installed in Habitat for Humanity Houses. The paper contains two Parts: 1) analysis of the three operational prototype units, 2) exploration of alternative design solutions. ResCore is a manufactured construction component designed to expedite home building by decreasing the need for skilled labor at the work site. The unit concentrates untility elements into a wall unit(s), which is shipped to the construction site and installed in minimum time. The ResCore unit is intended to be built off-site in a manufacturing environment where the impact of vagaries of weather and work-crew coordination and scheduling are minimized. The controlled environment of the factory enhances efficient production of building components through material and labor throughput controls, enabling the production of components at a substantially reduced per-unit cost. The ResCore unit when compared to traditional "stick-built" utility wall components is in may ways analogous to the factory built roof truss compared to on-site "stick-Built" roof framing.

Boyd, G.; Lundell, C.; Wendt, R.

1999-06-01T23:59:59.000Z

434

Employing real experiments and modern viewpoints in the teaching of modern physics  

E-Print Network (OSTI)

This is a report of a course on modern physics designed and taught to undergraduate science and engineering students in the Spring of 2013. The course, meant for freshmen, attempts to integrate statistical mechanics into non-classical physics and introduces some novel teaching ideas such as the field approach in contrast to typical wave and particle viewpoints traditionally covered in usual textbooks. The various modern applications of quantum theory in realizing practical devices are recounted in a way that is amenable to beginners. Especially, we describe the inclusion of visually appealing and carefully designed robust experiments inside the formal classroom environment. This collection of applications and demonstrations serves as a useful collection of teaching aids and can be easily transformed into active learning exercises. The impact of this teaching strategy on student learning and its role in exciting an interest in physics is assessed.

Anwar, Muhammad Sabieh

2013-01-01T23:59:59.000Z

435

Searching for sterile neutrinos in ice  

E-Print Network (OSTI)

Oscillation interpretation of the results from the LSND, MiniBooNE and some other experiments requires existence of sterile neutrino with mass $\\sim 1$ eV and mixing with the active neutrinos $|U_{\\mu 0}|^2 \\sim (0.02 - 0.04)$. It has been realized some time ago that existence of such a neutrino affects significantly the fluxes of atmospheric neutrinos in the TeV range which can be tested by the IceCube Neutrino Observatory. In view of the first IceCube data release we have revisited the oscillations of high energy atmospheric neutrinos in the presence of one sterile neutrino. Properties of the oscillation probabilities are studied in details for various mixing schemes both analytically and numerically. The energy spectra and angular distributions of the $\

Soebur Razzaque; A. Yu. Smirnov

2011-04-07T23:59:59.000Z

436

ICE Cleaning Test Report.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

16 16 FIELD DEMONSTRATION OF THE ICE 250 TM CLEANING SYSTEM AT THE ROCKY MOUNTAIN OILFIELD TESTING CENTER CASPER, WYOMING August 18-19, 1999 Date Published: October 5, 1999 J.L. Johnston L.M. Jackson PREPARED FOR THE UNITED STATES DEPARTMENT OF ENERGY/ROCKY MOUNTAIN OILFIELD TESTING CENTER Work Performed Under Rocky Mountain Oilfield Testing Center (RMOTC) CRADA No. 99-009 TABLE OF CONTENTS Abstract.............................................................................................................................................1 Introduction.......................................................................................................................................1 Product Description ...........................................................................................................................1

437

Why could ice ages be unpredictable?  

E-Print Network (OSTI)

It is commonly accepted that the variations of Earth's orbit and obliquity control the timing of Pleistocene glacial-interglacial cycles. Evidence comes from power spectrum analysis of palaeoclimate records and from inspection of the timing of glacial and deglacial transitions. However, we do not know how tight this control is. Is it, for example, conceivable that random climatic fluctuations could cause a delay in deglaciation, bad enough to skip a full precession or obliquity cycle and subsequently modify the sequence of ice ages? To address this question, seven previously published conceptual models of ice ages are analysed by reference to the notion of generalised synchronisation. Insight is being gained by comparing the effects of the astronomical forcing with idealised forcings composed of only one or two periodic components. In general, the richness of the astronomical forcing allows for synchronisation over a wider range of parameters, compared to periodic forcing. Hence, glacial cycles may conceivably have remained paced by the astronomical forcing throughout the Pleistocene. However, all the models examined here also show a range of parameters for which the structural stability of the ice age dynamics is weak. This means that small variations in parameters or random fluctuations may cause significant shifts in the succession of ice ages if the system were effectively in that parameter range. Whether or not the system has strong structural stability depends on the amplitude of the effects associated with the astronomical forcing, which significantly differ across the different models studied here. The possibility of synchronisation on eccentricity is also discussed and it is shown that a high Rayleigh number on eccentricity, as recently found in observations, is no guarantee of reliable synchronisation.

Michel Crucifix

2013-02-06T23:59:59.000Z

438

On water ice formation in interstellar clouds  

E-Print Network (OSTI)

A model is proposed for the formation of water ice mantles on grains in interstellar clouds. This occurs by direct accretion of monomers from the gas, be they formed by gas or surface reactions. The model predicts the existence of a threshold in interstellar light extinction, A(v), which is mainly determined by the adsorption energy of water molecules on the grain material; for hydrocarbon material, chemical simulation places this energy between 0.5 and 2 kcal/mole, which sets the visible exctinction threshold at a few magnitudes, as observed. Once the threshold is crossed, all available water molecules in the gas are quickly adsorbed, forming an ice mantle, because the grain cools down and the adsorption energy on ice is higher than on bare grain. The model also predicts that the thickness of the mantle, and, hence, the optical thickness at 3 mu, grow linearly with A(v), as observed, with a slope which depends upon the total amount of water in the gas. Chemical simulation was also used to determine the adsorption sites and energies of O and OH on hydrocarbons, and study the dynamics of formation of water molecules by surface reactions with gaseous H atoms, as well as their chances of sticking in situ.

Renaud Papoular

2005-07-06T23:59:59.000Z

439

Wind-electric ice making investigation  

DOE Green Energy (OSTI)

The village power group at the National Renewable Energy Laboratory (NREL) has been researching the most practical and cost-effective means for producing ice from off-grid wind-electric power systems since 1993. The first phase of the project demonstrated that commercial vapor-compression ice makers could operate effectively when powered by a variable speed permanent magnet wind generator. In the second phase of the project, steady-state and dynamic numerical models of these systems were developed and experimentally validated. The third phase of the project was thorough steady-state and dynamic testing of a commercial 1.1 ton ice maker unit powered by a commercial 12 kW wind turbine alternator on an NREL dynamometer test stand. With the data from phases 1--3 an economic feasibility analysis was performed. It is hoped that continued development, and eventually commercialization, of this concept will take place in the private sector in the form of small business partnerships.

Holz, R.; Drouilhet, S.; Gevorgian, V.

1998-07-01T23:59:59.000Z

440

ICE LINES IN CIRCUMBINARY PROTOPLANETARY DISKS  

Science Conference Proceedings (OSTI)

I examine the position of the ice line in circumbinary disks heated by steady mass accretion and stellar irradiation and compare with the critical semimajor axis, interior to which planetary orbits are unstable. There is a critical binary separation, dependent on the binary parameters and disk properties, for which binaries with separations larger than this critical value have ice lines that lie interior to the boundary of stability. For an equal-mass binary comprised of 1 M{sub Sun} components, this critical separation is Almost-Equal-To 1.04 AU, and scales weakly with mass accretion rate and Rosseland mean opacity ({proportional_to}[ M-dot {kappa}{sub R}]{sup 2/9}). Assuming a steady mass accretion rate of M-dot {approx}10{sup -8} M{sub Sun} yr{sup -1} and a Rosseland mean opacity of {kappa}{sub R} {approx} 1 cm{sup 2} g{sup -1}, I show that {approx}> 80% of all binary systems with component masses M{sub *} {approx}ice lines that lie interior to the critical semimajor axis. This suggests that rocky planets should not form in these systems, a prediction which can be tested by looking for planets around binaries with separations larger than the critical separation with Kepler (difficult) and with microlensing.

Clanton, Christian, E-mail: clanton@astronomy.ohio-state.edu [Department of Astronomy, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210 (United States)

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Allegories of Modernity, Geographies of Memory  

E-Print Network (OSTI)

This dissertation examines how postmodernist narratives of memory in Graham Swift's Waterland, Salman Rushdie's Midnight's Children, and Amitav Ghosh's The Shadow Lines retrieve the stories of those who have been lost or forgotten in official history and refigure the temporal and spatial imaginary in intertwining personal stories of crisis with public history through acts of remembering. Questioning the modernist ideology of progress based on the idea of linear sequence of time, the novels not only retrace the heterogeneous and discontinuous layers of stories overlooked or repressed in official accounts of modern history, but also re-examine the contradictory and contested process by which subjects are situated or positioned, and its effects on the production of knowledge. These postmodern historical novels examine history as a discourse and explore its limits. The narrators of the novels are engaged with an autobiographical act of rewriting their lives, but their efforts to reconstitute themselves in unity and continuity are undermined by the disjunctive narrative form of the novels. The layered narrative of memory through which the novels reconstruct modern history is allegorical in the double sense that it exposes the act of signification by decentering the symbol of the transcendental signifier while telling an allegorical story of personal and familial history that mirrors national history in a fragmented way. In Waterland, Tom Crick retells his personal and familial stories intertwined with local and national history as alternative history lessons and challenges the Idea of Progress by revisiting sites of traumatic memory. Midnight's Children constructs counter-stories of Post-Independence India as multiple alternatives to one official version of history and addresses the limits of history in terms of "a border zone of temporality." In The Shadow Lines, the narrator retells his family history as a story of borders through his struggle with gaps in official history and creates a national imaginary with mirror images and events. The postmodernist narrative of memory in these novels turns the time of the now into a time for the "past as to come," a time to detect the unrealized and unfulfilled possibilities of the past, through retellings of the past.

Jeon, Seenhwa

2012-08-01T23:59:59.000Z

442

Scientific computations on modern parallel vector systems  

E-Print Network (OSTI)

Computational scientists have seen a frustrating trend of stagnating application performance despite dramatic increases in the claimed peak capability of high performance computing systems. This trend has been widely attributed to the use of superscalar-based commodity components whos architectural designs offer a balance between memory performance, network capability, and execution rate that is poorly matched to the requirements of large-scale numerical computations. Recently, two innovative parallel-vector architectures have become operational: the Japanese Earth Simulator (ES) and the Cray X1. In order to quantify what these modern vector capabilities entail for the scientists that rely on modeling and simulation, it is critical to evaluate this architectural paradigm in the context of demanding computational algorithms. Our evaluation study examines four diverse scientific applications with the potential to run at ultrascale, from the areas of plasma physics, material science, astrophysics, and magnetic fusion. We compare performance between the vector-based ES and X1, with leading superscalar-based platforms: the IBM Power3/4 and the SGI Altix. Our research team was the first international group to conduct a performance evaluation study at the Earth Simulator Center; remote ES access in not available. Results demonstrate that the vector systems achieve excellent performance on our application suite the highest of any architecture tested to date. However, vectorization of a particle-incell code highlights the potential difficulty of expressing irregularly structured algorithms as data-parallel programs. 1.

Leonid Oliker; Andrew Canning; Jonathan Carter; John Shalf; Stephane Ethier

2004-01-01T23:59:59.000Z

443

NOAA Technical Memorandum ERL GLERL-20 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS,  

E-Print Network (OSTI)

Cooling Phase 3.2.2 Ice Formation and Breakup Phases 3.2.3 The Ice Cycle on Lake Superior 3.2.4 The IceNOAA Technical Memorandum ERL GLERL-20 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS, WINTER of this NOAA Environmental Research Laboratories publication. ii #12;LANDSAT fake color image of ice cover

444

Core Values | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Core Values Core Values Core Values People - People are our most important resource. We respect and use our experience and skills and appreciate our diversity. Business Excellence - We are fiscally responsible and actively pursue best business practices. Safety - We protect our human and material resources and promote safe work practices within the office and at our sites. Communication - We take full advantage of our virtual organization's strengths and share information freely across all levels of the organization. Leadership and Teamwork - We encourage leadership and teamwork at all levels of the organization. We value active participation and demonstrate respect for each other. Customer Service - We openly communicate with all our customers in a timely manner and actively seek opportunities to improve our services.

445

Reactor core isolation cooling system  

DOE Patents (OSTI)

A reactor core isolation cooling system includes a reactor pressure vessel containing a reactor core, a drywell vessel, a containment vessel, and an isolation pool containing an isolation condenser. A turbine is operatively joined to the pressure vessel outlet steamline and powers a pump operatively joined to the pressure vessel feedwater line. In operation, steam from the pressure vessel powers the turbine which in turn powers the pump to pump makeup water from a pool to the feedwater line into the pressure vessel for maintaining water level over the reactor core. Steam discharged from the turbine is channeled to the isolation condenser and is condensed therein. The resulting heat is discharged into the isolation pool and vented to the atmosphere outside the containment vessel for removing heat therefrom. 1 figure.

Cooke, F.E.

1992-12-08T23:59:59.000Z

446

Reactor core isolation cooling system  

DOE Patents (OSTI)

A reactor core isolation cooling system includes a reactor pressure vessel containing a reactor core, a drywell vessel, a containment vessel, and an isolation pool containing an isolation condenser. A turbine is operatively joined to the pressure vessel outlet steamline and powers a pump operatively joined to the pressure vessel feedwater line. In operation, steam from the pressure vessel powers the turbine which in turn powers the pump to pump makeup water from a pool to the feedwater line into the pressure vessel for maintaining water level over the reactor core. Steam discharged from the turbine is channeled to the isolation condenser and is condensed therein. The resulting heat is discharged into the isolation pool and vented to the atmosphere outside the containment vessel for removing heat therefrom.

Cooke, Franklin E. (San Jose, CA)

1992-01-01T23:59:59.000Z

447

Frostbite Theater - Liquid Nitrogen Experiments - Dry Ice vs. Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Egg + Liquid Nitrogen + Time-lapse! Egg + Liquid Nitrogen + Time-lapse! Previous Video (Egg + Liquid Nitrogen + Time-lapse!) Frostbite Theater Main Index Next Video (Liquid Nitrogen Cooled Dry Ice in Water!) Liquid Nitrogen Cooled Dry Ice in Water! Dry Ice vs. Liquid Nitrogen! Dry ice is cold. Liquid nitrogen is cold, too. What happens when the two are mixed together? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Have you ever wondered what happens when you mix dry ice and liquid nitrogen? Steve: Well, we just happen to have a chunk of dry ice left over from when we filmed 'How to Make a Cloud Chamber,' and here at Jefferson Lab, liquid nitrogen flows like water, so we're going to find out!

448

STATEMENT OF WORK (SOW) TEMPLATE FOR ICE SUPPORT CONTRACTOR  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ICE SUPPORT CONTRACTOR ICE SUPPORT CONTRACTOR The template presented below is a Statement of Work (SOW) for services of an ICE Support Contractor for assisting OECM in conducting an ICE. Project and review specific information should be incorporated. Explanatory text appears in italics, while information that should be selected appears in >. The format and contents of this SOW is not compulsory, and the use is at the discretion of the OECM Analysts, tailored as appropriate for the desired contractor support activities. If no contractor support is required, this appendix is not used. Statement of Work for Independent Cost Estimate (ICE) > <ICE (i.e., Alternative Selection and Cost Range (CD-1), Establish

449

Orbital ice: An exact Coulomb phase on the diamond lattice  

SciTech Connect

We demonstrate the existence of an orbital Coulomb phase as the exact ground state of a p-orbital exchange Hamiltonian on the diamond lattice. The Coulomb phase is an emergent state characterized by algebraic dipolar correlations and a gauge structure resulting from local constraints (ice rules) of the underlying lattice models. For most ice models on the pyrochlore lattice, these local constraints are a direct consequence of minimizing the energy of each individual tetrahedron. On the contrary, the orbital ice rules are emergent phenomena resulting from the quantum orbital dynamics. We show that the orbital ice model exhibits an emergent geometrical frustration by mapping the degenerate quantum orbital ground states to the spin-ice states obeying the 2-in-2-out constraints on the pyrochlore lattice. We also discuss possible realization of the orbital ice model in optical lattices with p-band fermionic cold atoms.

Chern Giawei [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States); Wu Congjun [Department of Physics, University of California, San Diego, California 92093 (United States)

2011-12-15T23:59:59.000Z

450

ARM - Publications: Science Team Meeting Documents: Investigation of Ice  

NLE Websites -- All DOE Office Websites (Extended Search)

Investigation of Ice Crystal Shapes Using Multi-resolution Techniques Investigation of Ice Crystal Shapes Using Multi-resolution Techniques McFarquhar, Greg University of Illinois Better knowledge of small-scale features from ice crystals are needed to determine their effects on radiation and hence to improve the treatment of clouds in climate models. With the Cloud Particle Imager (CPI) it is now possible to capture ice crystal images with 2.3 μm resolution and 256 gray scales of illumination, providing an unprecedented wealth of information to utilize in the ongoing quest to understand the small scale structure of ice crystals. In this study, we applied wavelet and fractal analysis to CPI images of ice crystals collected in cirrus by the University of North Dakota Citation during the Intensive Observation Period at the Southern

451

18 Science and the Modern World Steven Shapin  

E-Print Network (OSTI)

18 Science and the Modern World Steven Shapin O Science Made the Modern World, and it's science then and whose obviousness has, if anything, become even more pronounced over time. Science continues to Make society, the knowledge economy--it's science that's understood to be their motive force. It's science

Shapin, Steven

452

Event detection in sensor networks for modern oil fields  

Science Conference Proceedings (OSTI)

We report the experience of implementing event detection analytics to monitor and forewarn oil production failures in modern, digitized oil fields. Modern oil fields are equipped with thousands of sensors and gauges to measure various physical and chemical ... Keywords: digital oil field, event warning, gas, industry, near real time analytics, oil, petroleum, surveillance

Matthew Hill; Murray Campbell; Yuan-Chi Chang; Vijay Iyengar

2008-07-01T23:59:59.000Z

453

Interactive out-of-core isosurface extraction  

Science Conference Proceedings (OSTI)

Keywords: interval tree, isosurface extraction, marching cubes, out-of-core computation, scientific visualization

Yi-Jen Chiang; Cludio T. Silva; William J. Schroeder

1998-10-01T23:59:59.000Z

454

Multi-core Performance Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

core Performance Analysis core Performance Analysis HPC Computation 1 Performance Analysis * Compiler Feedback * HWPC Data * Load Balance 2 Compiler Feedback * Before optimizing code, it's critical to know what the compiler does to your code - Loop optimizations - Vectorization - Prefetching - ... * Equally important to what the compiler does is what it doesn't do, and why - Data dependencies - Misplaced branches - Unknown loop counts - ... 3 Enabling Compiler Feedback * Portland Group - Minfo=all - Mneginfo - Minfo=ccff (Common Compiler Feedback Format) * Cray - rm (Fortran) - hlist=m (C/C++) * Intel - vec-report1 * Pathscale - LNO:simd_verbose=ON:vintr_verbose=ON:prefetch_v erbose=ON * GNU - ftree-vectorizer-verbose=1

455

Free-fall core sampler  

SciTech Connect

The described free-fall corer apparatus consists of an expendable, elongated casing having an annular-shaped ballast member secured to it. A cylindrical housing surmounts this ballast member and accommodates a float which is tied to the core liner. During descent of the apparatus, the float is latched to the ballast element, but when the apparatus strikes bottom, a pilot weight suspended from the float latching means moves upward and allows the float to freely ascend within the ocean. This ascent unlatches the core liner from the expendable casing and the liner is thereafter raised to the surface. (13 claims)

Raymond, S.O.; Sachs, P.L.

1968-03-12T23:59:59.000Z

456

Benin: Increased Access to Modern Energy Project | Open Energy Information  

Open Energy Info (EERE)

Benin: Increased Access to Modern Energy Project Benin: Increased Access to Modern Energy Project Jump to: navigation, search Name of project Benin: Increased Access to Modern Energy Project Location of project Benin Energy Services Lighting, Cooking and water heating, Space heating, Information and communications Year initiated 2009 Organization World Bank Website http://documents.worldbank.org Coordinates 9.30769°, 2.315834° References The World Bank[1] The objective of the Increased Access to Modern Energy Project is to improve reliability, efficiency, and access to modern energy services in Benin. There are three components to the project, the first component being electrical network upgrading. This component will provide for necessary investments to allow for continued operation of the existing transmission

457

Redefining Customer Service is Essential to Modernizing Grid | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Redefining Customer Service is Essential to Modernizing Grid Redefining Customer Service is Essential to Modernizing Grid Redefining Customer Service is Essential to Modernizing Grid December 13, 2010 - 2:44pm Addthis Patricia A. Hoffman Patricia A. Hoffman Assistant Secretary, Office of Electricity Delivery & Energy Reliability What does this mean for me? Utilities should be communicating to you about projects to modernize the grid that are effecting you. When was the last time you talked to your electricity provider about something besides a service or billing problem? Put another way, does your utility ask for your opinion on its plans for the future? Do you feel like your concerns are heard? There has been a lot of news lately about projects that focus on modernizing the electric grid, with some of it focused on legitimate

458

Obama Administration Announces Job-Creating Grid Modernization Pilot  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Job-Creating Grid Modernization Job-Creating Grid Modernization Pilot Projects Obama Administration Announces Job-Creating Grid Modernization Pilot Projects October 5, 2011 - 11:52am Addthis Washington, D.C. - Demonstrating its commitment to job creation and modernizing America's infrastructure, the Obama Administration today announced it would accelerate the permitting and construction of seven proposed electric transmission lines. This move will speed the creation of thousands of construction and operations jobs while transforming the nation's electric system into a modern, 21st century grid that is safer and more secure, and gives consumers more energy choices. "The President wants to get America working again. He is committed to cutting red tape and making immediate investments to put people to work

459

Many-core key-value store  

Science Conference Proceedings (OSTI)

Scaling data centers to handle task-parallel work-loads requires balancing the cost of hardware, operations, and power. Low-power, low-core-count servers reduce costs in one of these dimensions, but may require additional nodes to provide the required ... Keywords: 64-core Tilera TILEPro64, many-core key-value store, data centers, task-parallel workloads, low-core-count servers, low-power servers, under-utilizing memory, power consumption, high-core-count processor, clock rate, 4-core Intel Xeon L5520, 8-core AMD Opteron 6128 HE

M. Berezecki; E. Frachtenberg; M. Paleczny; K. Steele

2011-07-01T23:59:59.000Z

460

Definition: Core Analysis | Open Energy Information  

Open Energy Info (EERE)

Core Analysis Core Analysis Jump to: navigation, search Dictionary.png Core Analysis Core samples are obtained from drilling a well, typically using a synthetic diamond coated bit that has a hollow center so cylindrical rock samples ("core") can be extracted. Core samples successfully recovered are visually inspected to determine rock type, mineralization, and fracture networks, then certain laboratory analyses may ensue to acquire detailed rock properties. View on Wikipedia Wikipedia Definition A core sample is a cylindrical section of (usually) a naturally occurring substance. Most core samples are obtained by drilling with special drills into the substance, for example sediment or rock, with a hollow steel tube called a core drill. The hole made for the core sample is

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Core-melt source reduction system  

DOE Patents (OSTI)

A core-melt source reduction system for ending the progression of a molten core during a core-melt accident and resulting in a stable solid cool matrix. The system includes alternating layers of a core debris absorbing material and a barrier material. The core debris absorbing material serves to react with and absorb the molten core such that containment overpressurization and/or failure does not occur. The barrier material slows the progression of the molten core debris through the system such that the molten core has sufficient time to react with the core absorbing material. The system includes a provision for cooling the glass/molten core mass after the reaction such that a stable solid cool matrix results.

Forsberg, Charles W. (Oak Ridge, TN); Beahm, Edward C. (Oak Ridge, TN); Parker, George W. (Concord, TN)

1995-01-01T23:59:59.000Z

462

Core-melt source reduction system  

DOE Patents (OSTI)

A core-melt source reduction system for ending the progression of a molten core during a core-melt accident and resulting in a stable solid cool matrix. The system includes alternating layers of a core debris absorbing material and a barrier material. The core debris absorbing material serves to react with and absorb the molten core such that containment overpressurization and/or failure does not occur. The barrier material slows the progression of the molten core debris through the system such that the molten core has sufficient time to react with the core absorbing material. The system includes a provision for cooling the glass/molten core mass after the reaction such that a stable solid cool matrix results. 4 figs.

Forsberg, C.W.; Beahm, E.C.; Parker, G.W.

1995-04-25T23:59:59.000Z

463

Determining Cloud Ice Water Path from High-Frequency Microwave...  

NLE Websites -- All DOE Office Websites (Extended Search)

Determining Cloud Ice Water Path from High-Frequency Microwave Measurements G. Liu Department of Meteorology Florida State University Tallahassee, Florida Introduction A better...

464

THE FORMATION AND REACTIONS OF OXIDANTS IN WATER ICE .  

E-Print Network (OSTI)

??This dissertation investigates the chemistry in water ice of radical species, such as OH and O, produced in radio-frequency discharge. This novel method of studying (more)

Do, Nhut

2013-01-01T23:59:59.000Z

465

LIMITS TO ICE ON ASTEROIDS (24) THEMIS AND (65) CYBELE  

Science Conference Proceedings (OSTI)

We present optical spectra of (24) Themis and (65) Cybele, two large main-belt asteroids on which exposed water ice has recently been reported. No emission lines, expected from resonance fluorescence in gas sublimated from the ice, were detected. Derived limits to the production rates of water are {approx}ice because the measured albedos of Themis and Cybele are low ({approx}0.05-0.07). We also rule out models in which a large fraction of the surface is occupied by low-albedo ('dirty') water ice because dirty ice would be warm and would sublimate strongly enough for gaseous products to have been detected. If ice exists on these bodies it must be relatively clean (albedo {approx}>0.3) and confined to a fraction of the Earth-facing surface {approx}ice. If the ice is even more reflective (albedo {approx}>0.6), then the timescale for sublimation of an optically thick layer can rival the {approx}10{sup 3} yr interval between impacts with bodies this size. In this sense, exposure by impact may be a quasi steady-state feature of ice-containing asteroids at 3 AU.

Jewitt, David; Guilbert-Lepoutre, Aurelie, E-mail: jewitt@ucla.edu [Department of Earth and Space Sciences, UCLA, CA 90095 (United States)

2012-01-15T23:59:59.000Z

466

Reducing uncertainty in high-resolution sea ice models.  

Science Conference Proceedings (OSTI)

Arctic sea ice is an important component of the global climate system, reflecting a significant amount of solar radiation, insulating the ocean from the atmosphere and influencing ocean circulation by modifying the salinity of the upper ocean. The thickness and extent of Arctic sea ice have shown a significant decline in recent decades with implications for global climate as well as regional geopolitics. Increasing interest in exploration as well as climate feedback effects make predictive mathematical modeling of sea ice a task of tremendous practical import. Satellite data obtained over the last few decades have provided a wealth of information on sea ice motion and deformation. The data clearly show that ice deformation is focused along narrow linear features and this type of deformation is not well-represented in existing models. To improve sea ice dynamics we have incorporated an anisotropic rheology into the Los Alamos National Laboratory global sea ice model, CICE. Sensitivity analyses were performed using the Design Analysis Kit for Optimization and Terascale Applications (DAKOTA) to determine the impact of material parameters on sea ice response functions. Two material strength parameters that exhibited the most significant impact on responses were further analyzed to evaluate their influence on quantitative comparisons between model output and data. The sensitivity analysis along with ten year model runs indicate that while the anisotropic rheology provides some benefit in velocity predictions, additional improvements are required to make this material model a viable alternative for global sea ice simulations.

Peterson, Kara J.; Bochev, Pavel Blagoveston

2013-07-01T23:59:59.000Z

467

Ice-templated Porous Ceramic Structures for Energy Applications  

Science Conference Proceedings (OSTI)

We have studied the ice-templating method for filters and battery electrode applications with the hierarchical pore structure. The porous Si structure was...

468

Testing an Ice Storage System for Peak Load Reduction  

Science Conference Proceedings (OSTI)

Ice storage systems allow for the offset of peak building cooling power by allowing the building operator to choose a convenient window for making ice and then using that ice, rather than a traditional cooling system, to provide space cooling. For the past several years, the Electric Power Research Institute (EPRI) has tested the Ice Bear 30, a 30 ton-hour system designed to operate independently of the unitary system. This report describes the testing and its results, based on work performed at a field ...

2011-04-21T23:59:59.000Z

469

Microstructural Characterization of Snow and Ice - Programmaster.org  

Science Conference Proceedings (OSTI)

Symposium, Recent Advances in Structural Characterization of Materials. Presentation Title, Microstructural Characterization of Snow and Ice. Author(s), I. Baker...

470

Molecular Hydrogen Formation on Ice Under Interstellar Conditions  

E-Print Network (OSTI)

The results of experiments on the formation of molecular hydrogen on low density and high density amorphous ice surfaces are analyzed using a rate equation model. The activation energy barriers for the relevant diffusion and desorption processes are obtained. The more porous morphology of the low density ice gives rise to a broader spectrum of energy barriers compared to the high density ice. Inserting these parameters into the rate equation model under steady state conditions we evaluate the production rate of molecular hydrogen on ice-coated interstellar dust grains.

Hagai B. Perets; Ofer Biham; Giulio Manico; Valerio Pirronello; Joe Roser; Sol Swords; Gianfranco Vidali

2004-12-09T23:59:59.000Z

471

Rapid Cooling Using Ice Slurries for Industrial and Medical ...  

Because of the high energy content of ice slurry, its cooling capacity is many times greater than that of single-phase fluids. ... Wind Energy; Partners (27)

472

Hydrogen Fuel Pilot Plant and Hydrogen ICE Vehicle Testing  

NLE Websites -- All DOE Office Websites (Extended Search)

Fuel Pilot Plant and Hydrogen ICE Vehicle Testing Jim Francfort (INEEL) Don Karner (ETA) 2004 Fuel Cell Seminar - San Antonio Session 5B - Hydrogen DOE - Advanced Vehicle Testing...

473

Development of ice hockey in Bosnia and Hertzegovina.  

E-Print Network (OSTI)

??Thesis explains general situation of ice hockey in Bosnia and Herzegovina, what is the current state of hockey and how did it came to the (more)

Hasovic, Ermin

2012-01-01T23:59:59.000Z

474

Implication of puck possession on scoring changes in ice hockey.  

E-Print Network (OSTI)

??Much of the conventional wisdom in ice hockey suggests that moving the puck forward,towards the opponent's goal, is the best strategy for producing scoring chances. (more)

Rollins, Laura

2010-01-01T23:59:59.000Z

475

Dynamic implementation in organizing an ice hockey tournament.  

E-Print Network (OSTI)

??The aim of this thesis is to follow, describe and evaluate the phases of organizing internationally recognized ice hockey tournament. The authors were following the (more)

Ijs, Juhani

2012-01-01T23:59:59.000Z

476

Teaching game sense in ice-hockey junior organization.  

E-Print Network (OSTI)

??The purpose of making a manual for Heinolan Kiekko junior ice-hockey club was to provide a tool for coaches everyday work in the field. The (more)

Juurikkala, Markus

2012-01-01T23:59:59.000Z

477

Evaluation of icing design criteria for lattice towers.  

E-Print Network (OSTI)

??Atmospheric icing is a major design factor for guyed lattice masts and transmission lines in Canada and many others countries with cold climate. Tall and (more)

Korotkov, Oleksiy

2010-01-01T23:59:59.000Z

478

FIRST DETECTION OF WATER VAPOR IN A PRE-STELLAR CORE  

Science Conference Proceedings (OSTI)

Water is a crucial molecule in molecular astrophysics as it controls much of the gas/grain chemistry, including the formation and evolution of more complex organic molecules in ices. Pre-stellar cores provide the original reservoir of material from which future planetary systems are built, but few observational constraints exist on the formation of water and its partitioning between gas and ice in the densest cores. Thanks to the high sensitivity of the Herschel Space Observatory, we report on the first detection of water vapor at high spectral resolution toward a dense cloud on the verge of star formation, the pre-stellar core L1544. The line shows an inverse P-Cygni profile, characteristic of gravitational contraction. To reproduce the observations, water vapor has to be present in the cold and dense central few thousand AU of L1544, where species heavier than helium are expected to freeze out onto dust grains, and the ortho:para H{sub 2} ratio has to be around 1:1 or larger. The observed amount of water vapor within the core (about 1.5 Multiplication-Sign 10{sup -6} M{sub Sun }) can be maintained by far-UV photons locally produced by the impact of galactic cosmic rays with H{sub 2} molecules. Such FUV photons irradiate the icy mantles, liberating water vapor in the core center. Our Herschel data, combined with radiative transfer and chemical/dynamical models, shed light on the interplay between gas and solids in dense interstellar clouds and provide the first measurement of the water vapor abundance profile across the parent cloud of a future solar-type star and its potential planetary system.

Caselli, Paola; Douglas, Thomas [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom); Keto, Eric [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Bergin, Edwin A. [Department of Astronomy, The University of Michigan, 500 Church Street, Ann Arbor, MI 48109-1042 (United States); Tafalla, Mario [Observatorio Astronomico Nacional (IGN), Calle Alfonso XII, 3, E-28014 Madrid (Spain); Aikawa, Yuri [Department of Earth and Planetary Sciences, Kobe University, Nada, 657-8501 Kobe (Japan); Pagani, Laurent [LERMA and UMR 8112 du CNRS, Observatoire de Paris, 61 Av. de l'Observatoire, F-75014 Paris (France); Yildiz, Umut A.; Kristensen, Lars E.; Van Dishoeck, Ewine F. [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands); Van der Tak, Floris F. S. [SRON Netherlands Institute for Space Research, P.O. Box 800, 9700 AV, Groningen (Netherlands); Walmsley, C. Malcolm; Codella, Claudio [INAF-Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze (Italy); Nisini, Brunella, E-mail: p.caselli@leeds.ac.uk [INAF-Osservatorio Astronomico di Roma, I-00040 Monte Porzio Catone (Italy)

2012-11-10T23:59:59.000Z

479

Laminated grid and web magnetic cores  

DOE Patents (OSTI)

A laminated magnetic core characterized by an electromagnetic core having core legs which comprise elongated apertures and edge notches disposed transversely to the longitudinal axis of the legs, such as high reluctance cores with linear magnetization characteristics for high voltage shunt reactors. In one embodiment the apertures include compact bodies of microlaminations for more flexibility and control in adjusting permeability and/or core reluctance.

Sefko, John (Monroeville, PA); Pavlik, Norman M. (Plum Borough, PA)

1984-01-01T23:59:59.000Z

480

Stability of Molten Core Materials  

SciTech Connect

The purpose of this report is to document a literature and data search for data and information pertaining to the stability of nuclear reactor molten core materials. This includes data and analysis from TMI-2 fuel and INLs LOFT (Loss of Fluid Test) reactor project and other sources.

Layne Pincock; Wendell Hintze

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ice cores modern" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

A Novel and Low-Cost Sea Ice Mass Balance Buoy  

Science Conference Proceedings (OSTI)

The understanding of sea ice mass balance processes requires continuous monitoring of the seasonal evolution of the ice thickness. While autonomous ice mass balance (IMB) buoys deployed over the past two decades have contributed to scientists' ...

Keith Jackson; Jeremy Wilkinson; Ted Maksym; David Meldrum; Justin Beckers; Christian Haas; David Mackenzie

2013-11-01T23:59:59.000Z

482

Efficient flowline simulations of ice-shelf/ocean interactions: Sensitivity studies with a fully coupled model  

Science Conference Proceedings (OSTI)

Thermodynamic flowline and plume models for the ice-shelf/ocean system simplify the ice and ocean dynamics sufficiently to allow extensive exploration of parameters affecting ice-sheet stability while including key physical processes. Comparison ...

Ryan T. Walker; David M. Holland; Byron R. Parizek; Richard B. Alley; Sophie M. J. Nowicki; Adrian Jenkins

483

Development of a Sea Ice Model for Use in Zonally Averaged Energy Balance Climate Models  

Science Conference Proceedings (OSTI)

A sea ice model for use in zonally averaged energy balance climate models is presented which includes the following processes: surface melting, basal freezing and melting, lateral melting from ice-flee water or growth of new ice in leads, ...

L. D. Danny Harvey

1988-12-01T23:59:59.000Z

484

Comparison of PARASOL Observations with Polarized Reflectances Simulated Using Different Ice Habit Mixtures  

Science Conference Proceedings (OSTI)

Insufficient knowledge of the habit distribution and the degree of surface roughness of ice crystals within ice clouds is a source of uncertainty in the forward light scattering and radiative transfer simulations of ice clouds used in downstream ...

Benjamin H. Cole; Ping Yang; Bryan A. Baum; Jerome Riedi; Laurent C.-Labonnote; Francois Thieuleux; Steven Platnick

2013-01-01T23:59:59.000Z

485

Modeling the High-Frequency Component of Arctic Sea Ice Drift and Deformation  

Science Conference Proceedings (OSTI)

Buoy observations of sea ice drift show that sea ice motion and deformation contain substantial high-frequency variability at subdaily timescales. However, numerical simulations of the sea ice dynamics normally do not include processes on such ...

Petra Heil; William D. Hibler III

2002-11-01T23:59:59.000Z

486

Ice, Snow and Water: impacts of climate change on California and Himalayan Asia  

E-Print Network (OSTI)

SustainabilityBRIEFINGNOTE Ice,SnowandWater:impactslight absorption of snow and ice as pollutants darken theAsian region of snow, ice, water, and mountains, with huge

Fenner, R. A.

2009-01-01T23:59:59.000Z

487

Suppression of ICE and Apoptosis in Mammary Epithelial Cells by Extracellular Matrix  

E-Print Network (OSTI)

Suppression of ICE and Apoptosis in Mammary Epithelial Cellsmodulate the expression of ICE remain to be elucidated, asdo the in vivo substrates for ICE or related enzymes and the

Boudreau, Nancy

2011-01-01T23:59:59.000Z

488

Web-Ice: Integrated Data Collection and Analysis for Macromolecular Crystallography  

E-Print Network (OSTI)

results. A summary list is also available in Blu-Ice.Figure 7: SSRL Web-Ice interface displaying the summarizedTable 1: Programs used by Web-Ice for data analysis. Program

Gonzalez, Ana

2008-01-01T23:59:59.000Z

489

A QUANTUM MECHANICAL APPROACH TO THE VELOCITY OF DISLOCATIONS IN ICE  

E-Print Network (OSTI)

~, A. ~ Higashi, A. , Physics of Ice, edited by N. Riehl, B.THE VELOCITY OF DISLOCATIONS IN ICE RECEIVED LAWRENCE A. R.the velocity of dislocations in ice ref. (3,4) with which we

Forouhi, A.R.

2011-01-01T23:59:59.000Z

490

Using Ice to Mimic Nacre: From Structural Materials to Artificial Bone  

E-Print Network (OSTI)

Using Ice to Mimic Nacre: From Structural Materials tohere how the physics of ice formation can be used to developphenomenon, the freezing of sea ice, which occurs at the

Deville, Sylvain; Saiz, Eduardo; Nalla, Ravi K.; Tomsia, Antoni P.

2005-01-01T23:59:59.000Z

491

Modeled winter sea ice variability and the North Atlantic Oscillation: a multi-century perspective  

E-Print Network (OSTI)

leading mode in a coupled sea ice-ocen model. J Clim 16:009-0550-7 Modeled winter sea ice variability and the Northrelationship between winter sea ice vari- ability and the

Strong, Courtenay; Magnusdottir, Gudrun

2010-01-01T23:59:59.000Z

492

Simulating mixed-phase Arctic stratus clouds: sensitivity to ice initiation mechanisms  

E-Print Network (OSTI)

M. : Role of a parameterized ice-phase mi- crophysics in anof contact nucleation in ice phase initiation in clouds, J.simulated, process of ice phase initiation due to freezing

Sednev, I.

2008-01-01T23:59:59.000Z

493

Simulating mixed-phase Arctic stratus clouds: Sensitivity to ice initiation mechanisms  

E-Print Network (OSTI)

M. : Role of a parameterized ice-phase micro- physics in anconcentration (N i ) for ice phase in experiments with icei L ?1 Table 8. Composite ice phase effective radius (R ei )

Sednev, I.

2009-01-01T23:59:59.000Z

494

Retrieval of Ice Cloud Parameters Using the Advanced Microwave Sounding Unit  

Science Conference Proceedings (OSTI)

An algorithm is developed to derive cloud ice water path (IWP) and ice particle effective diameters De from the advanced microwave sounding unit (AMSU) measurements. In the algorithm, both IWP and De are related to the ice particle scattering ...

Limin Zhao; Fuzhong Weng

2002-04-01T23:59:59.000Z

495

Web-Ice: Integrated Data Collection and Analysis for Macromolecular Crystallography  

E-Print Network (OSTI)

in Blu-Ice. Figure 7: SSRL Web-Ice interface displaying theRadiation Laboratory (SSRL), and subsequently adapted forsystems Blu-Ice / DCSS at SSRL (McPhillips et al. , 2002)

Gonzalez, Ana

2008-01-01T23:59:59.000Z

496

Sensitivity of CAM5-Simulated Arctic Clouds and Radiation to Ice Nucleation Parameterization  

Science Conference Proceedings (OSTI)

Sensitivity of Arctic clouds and radiation in the Community Atmospheric Model, version 5, to the ice nucleation process is examined by testing a new physically based ice nucleation scheme that links the variation of ice nuclei (IN) number ...

Shaocheng Xie; Xiaohong Liu; Chuanfeng Zhao; Yuying Zhang

2013-08-01T23:59:59.000Z

497

Ice Loads on a Lattice Tower Estimated by Weather Station Data  

Science Conference Proceedings (OSTI)

Atmospheric ice loads are a major design criterion of tall structures in cold regions. In this paper the possibility to derive the design ice loads using analysis of meteorological observations made routinely at a weather station is studied. Ice ...

Eva Sundin; Lasse Makkonen

1998-05-01T23:59:59.000Z

498

Detection of Atmospheric Muon Neutrinos with the IceCube 9-String Detector  

E-Print Network (OSTI)

Neutrinos with the IceCube 9-String Detector A. Achterberg,Neutrinos with the IceCube 9-String Detector The IceCube17 me- ters apart in strings of 60. Strings are arranged on

Achterberg, A.; IceCube Collaboration

2008-01-01T23:59:59.000Z

499

Amplified Inception of European Little Ice Age by Sea IceOceanAtmosphere Feedbacks  

Science Conference Proceedings (OSTI)

The inception of the Little Ice Age (~14001700 AD) is believed to have been driven by an interplay of external forcing and climate system internal variability. While the hemispheric signal seems to have been dominated by solar irradiance and ...

Flavio Lehner; Andreas Born; Christoph C. Raible; Thomas F. Stocker

2013-10-01T23:59:59.000Z

500

Amplified inception of European Little Ice Age by sea ice-ocean-atmosphere feedbacks  

Science Conference Proceedings (OSTI)

The inception of the Little Ice Age (~1400-1700 AD) is believed to have been driven by an interplay of external forcing and climate system-internal variability. While the hemispheric signal seems to have been dominated by solar irradiance and ...

Flavio Lehner; Andreas Born; Christoph C. Raible; Thomas F. Stocker