Sample records for thick seams accessible

  1. Bursting at the Seams: Water Access and Housing in Luanda

    E-Print Network [OSTI]

    Bulfin, Michael Patrick

    2009-01-01T23:59:59.000Z

    constructed areas. The lack of water access and properand how the lack of access to clean water, coupled withmost slum residents lack knowledge about the basics of water

  2. Mining vertical coal seams in France

    SciTech Connect (OSTI)

    Schneiderman, S.J.

    1981-05-01T23:59:59.000Z

    French coal miners in the Lorraine Basin coalfields of Charbonnages de France, work under extremely difficult mining conditions. The coal seams are located in two parallel anticlines dipping to the southwest. On the northwest flanks the coal dips at angles up to 40/sup 0/; on the southeast flanks the coal dips as steep as 90/sup 0/. In addition to the problems associated with steeply dipping coal seams, the coal is often more than 3 meters (10 feet) thick, thus contributing the additional problems that are associated with thick seams. A cut-and-fill mining method is used and production of up to 400 tons per day for a three-shift working face has been achieved. The cut-and-fill mining method employed at Puit Reumaux, rising horizontal rooms with hydraulic stowing, is used in areas of the mine where seam dips exceed 45/sup 0/ and where seam thickness is from 2 to 5 meters (6.5 to 16.5 feet). Hydraulic stowing has many advantages for the Merlebach mine: The coalis located under urbanized areas and is also covered by water-bearing strata with hydraulic sand stowing there is little subsidence, so disturbances to the surface and the aquiferous zones are minimized. Hydraulic sand stowing also helps prevent eating and combustion.

  3. Method for gasification of deep, thin coal seams

    DOE Patents [OSTI]

    Gregg, David W. (Moraga, CA)

    1982-01-01T23:59:59.000Z

    A method of gasification of coal in deep, thin seams by using controlled bending subsidence to confine gas flow to a region close to the unconsumed coal face. The injection point is moved sequentially around the perimeter of a coal removal area from a production well to sweep out the area to cause the controlled bending subsidence. The injection holes are drilled vertically into the coal seam through the overburden or horizontally into the seam from an exposed coal face. The method is particularly applicable to deep, thin seams found in the eastern United States and at abandoned strip mines where thin seams were surface mined into a hillside or down a modest dip until the overburden became too thick for further mining.

  4. Method for gasification of deep, thin coal seams. [DOE patent

    DOE Patents [OSTI]

    Gregg, D.W.

    1980-08-29T23:59:59.000Z

    A method of gasification of coal in deep, thin seams by using controlled bending subsidence to confine gas flow to a region close to the unconsumed coal face is given. The injection point is moved sequentially around the perimeter of a coal removal area from a production well to sweep out the area to cause the controlled bending subsidence. The injection holes are drilled vertically into the coal seam through the overburden or horizontally into the seam from an exposed coal face. The method is particularly applicable to deep, thin seams found in the eastern United States and at abandoned strip mines where thin seams were surface mined into a hillside or down a modest dip until the overburden became too thick for further mining.

  5. Controls on deposition of the Pratt seam, Black Warrior Basin, Alabama

    SciTech Connect (OSTI)

    Weisenfluh, G.A.

    1982-01-01T23:59:59.000Z

    The study of regional, subregional and local variations in the Pratt seam of northern Alabama has generated a geological model which depicts the internal and external geometry of the coal seams and adjoining rocks of the Pratt group and suggests the controlling factors for deposistion of thick and thin coal. In addition to primary structural controls of peat accumulation, differential compaction of peat and other detrital sediments was an important factor governing the topographic setting within the fault blocks. Within a minable coal body, seam thickness is relatively constant (aside from local variations), but when the margins of the body are approached, the number of benches and partings will increase shortly before the seam splits into a number of unminable thin seams. This zone of transition which marks the boundary of the coal body is narrow (on the order of 500 to 1000 feet); consequently efforts in estimating minable tonnages should be directed toward defining this line more precisely.

  6. Coal Mining on Pitching Seams

    E-Print Network [OSTI]

    Brown, George MacMillan

    1915-01-01T23:59:59.000Z

    . 1915* App r ov e d: Department of Mining Engineering* COAL MUTING ON PITCHING SEAMS A THESIS SUBMITTED TO THE FACULTY OP THE SCHOOL OP ENGINEERING OF THE UNIVERSITY OP KANSAS for THE DEGREE OF ENGINEER OF MINES BY GEORGE MACMILLAN BROWN 1915... PREFACE In the following dissertation on the subject of "Coal Mining in Pitching Beams" the writer desires to describe more particularly those methods of mining peculiar to coal mines in Oklahoma, with which he has been more or less familiar during...

  7. Coal seam natural gas producing areas (Louisiana)

    Broader source: Energy.gov [DOE]

    In order to prevent waste and to avoid the drilling of unnecessary wells and to encourage the development of coal seam natural gas producing areas in Louisiana, the commissioner of conservation is...

  8. Optical Inspection of Welding Seams Fabian Timm1,2

    E-Print Network [OSTI]

    Optical Inspection of Welding Seams Fabian Timm1,2 , Thomas Martinetz1 , and Erhardt Barth1,2 1 present a framework for automatic inspection of welding seams based on specular reflections. To this end by using welding techniques. Soldering and welding techniques are common in diverse areas such as printed

  9. ENHANCED COAL BED METHANE PRODUCTION AND SEQUESTRATION OF CO2 IN UNMINEABLE COAL SEAMS

    SciTech Connect (OSTI)

    William A. Williams

    2004-03-01T23:59:59.000Z

    The availability of clean, affordable energy is essential for the prosperity and security of the United States and the world in the 21st century. Emissions of carbon dioxide (CO{sub 2}) into the atmosphere are an inherent part of electricity generation, transportation, and industrial processes that rely on fossil fuels. These energy-related activities are responsible for more than 80 percent of the U.S. greenhouse gas emissions, and most of these emissions are CO{sub 2}. Over the last few decades, an increased concentration of CO{sub 2} in the earth's atmosphere has been observed. Carbon sequestration technology offers an approach to redirect CO{sub 2} emissions into sinks (e.g., geologic formations, oceans, soils and vegetation) and potentially stabilize future atmospheric CO{sub 2} levels. Coal seams are attractive CO{sub 2} sequestration sinks, due to their abundance and proximity to electricity-generation facilities. The recovery of marketable coalbed methane (CBM) provides a value-added stream, potentially reducing the cost to sequester CO{sub 2} gas. Much research is needed to evaluate this technology in terms of CO{sub 2} storage capacity, sequestration stability, commercial feasibility and overall economics. CONSOL Energy Inc., Research & Development (CONSOL), with support from the US DOE, has embarked on a seven-year program to construct and operate a coal bed sequestration site composed of a series of horizontally drilled wells that originate at the surface and extend through two overlying coal seams. Once completed, all of the wells will be used initially to drain CBM from both the upper (mineable) and lower (unmineable) coal seams. After sufficient depletion of the reservoir, centrally located wells in the lower coal seam will be converted from CBM drainage wells to CO{sub 2} injection ports. CO{sub 2} will be measured and injected into the lower unmineable coal seam while CBM continues to drain from both seams. In addition to metering all injected CO{sub 2} and recovered CBM, the program includes additional monitoring wells to further examine horizontal and vertical migration of CO{sub 2}. This is the fifth Technical Progress report for the project. Progress this period was focused on reclamation of the north access road and north well site, and development of revised drilling methods. This report provides a concise overview of project activities this period and plans for future work.

  10. Cavity growth patterns on the partial seam crip test

    SciTech Connect (OSTI)

    Hommert, P.J.

    1984-01-01T23:59:59.000Z

    The Partial Seam CRIP (PSC) test conducted by Lawrence Livermore National Laboratories was characterized by two distinctly different types of cavity growth. Portions of the thermal data from the test have been analyzed using conduction models to infer the dynamics of the cavity growth. Growth during the first phase of the test was characterized by rapid movement of the process to the top of the seam. The growth patterns during this time were remarkably similar to those observed on the Hoe Creek III test. Cavity growth observed later in the test, after the CRIP maneuver and when the horizontal production was in use, showed more lateral extent within the seam similar to patterns that were observed on the Hanna UCG tests. This type of growth resulted in improved process efficiency, at least for the early post-CRIP period. Calculations using a thermal-mechanical growth model are consistent with both types of growth observed. In particular, when stringers that were present in the seam are included in the model calculations, the more favorable growth patterns observed in the test are predicted. It is concluded that non-coal layers within the seam have the potential to significantly affect cavity growth and thus their presence should be accounted for when designing a process. 11 references, 10 figures, 1 table.

  11. Type IIP supernovae as cosmological probes: A SEAM distance to SN 1999em

    E-Print Network [OSTI]

    Baron, E.; Nugent, Peter E.; Branch, David; Hauschildt, Peter H.

    2004-01-01T23:59:59.000Z

    Type IIP Supernovae as Cosmological Probes: A SEAM Distanceintrinsic brightness, supernovae make excellent cosmologicalstars: atmospheres — supernovae: 1999em Distances from

  12. Solution for Coal Seam Deaasi ication Wel s =ducing Under Two-Phase Flow Conditkms

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    . `E 22673 7ype-Curve ., Solution for Coal Seam Deaasi ication Wel s =ducing Under Two-Phase Flow the presenceof water in the coal seam and its co- production with gas. The developed type curves are capable dynamics of methane in coal seams. A previously developed numerical model has been instrumental

  13. Methane emission from flooded coal seams in abandoned mines, in the light of laboratory investigations

    E-Print Network [OSTI]

    Boyer, Edmond

    Methane emission from flooded coal seams in abandoned mines, in the light of laboratory of methane from flooded unexploited coal seams Field experience from the flooding operations of the abandoned gassy coal seams in abandoned mines. The tests included the following main stages: - Determining

  14. Air-channel testing landf ill geomembrane seams

    E-Print Network [OSTI]

    ). These welding systems allow the op erator to adjust welding speed, nip-roller pressure, and welding temperature destructive testing Thermal welding of polyvinyl chloride (PVC) geomembranes is an efficient and cost-effective method of field seaming. PVC geomembranes possess excellent thermal welding characteristics

  15. Geologic assessment of natural gas from coal seams in the Warrior Basin, Alabama. Topical report, September 1985-September 1986

    SciTech Connect (OSTI)

    McFall, K.S.; Wicks, D.E.; Kuuskraa, V.A.

    1986-11-01T23:59:59.000Z

    This study provides a detailed geologic assessment of the coal deposits in the Warrior Basin area that have high potential for natural gas from coal seams. The estimate of the natural gas in place in the four major coal groups is 19.8 trillion cubic feet. Although the bulk of the gas in place is in the deeper areally extensive Black Creek and Mary Lee coal groups, the more shallow Pratt coal group also shows good potential for coal seam gas. The most concentrated areas of methane in place are in the eastern portion of the Warrior Basin. These areas coincide with thick accumulations of high rank coals and their associated higher gas contents. These areas also appear to have been structurally altered, leading to enhanced permeability to gas and water. Thus, the eastern portions of the basin appear more favorable for coalbed methane production due to high gas contents, attractive coal thicknesses, closely-spaced coal cleats and joints, and moderate depths to the coal horizons.

  16. Geologic controls on sulfur content of the Blue Gem coal seam, southeastern Kentucky

    SciTech Connect (OSTI)

    Rimmer, S.M.; Moore, T.A.; Esterle, J.S.; Hower, J.C.

    1985-01-01T23:59:59.000Z

    Detailed petrographic and lithologic data on the Blue Gem coal seam for a local area in Knox County, Kentucky, suggest that a relationship may exist between overlying roof lithology, petrographic composition of the coal, and sulfur content. In the western part of the area, where thick (20-40 feet) shale sequences overlie the coal, sulfur contents are low (less than 1%). In isolated areas where discontinuous sandstones occur within 6 feet of the coal, sulfur contents range from 1% to over 3%. In the east, a sandstone body usually overlies and frequently scours out the coal, yet sulfur content varies independently of roof lithology. Towards the east, there is an increase in abundance, thickness and variability of fusain bands within the coal and an increase in pyrite and siderite either as cell fillings in fusinite or as masses within vitrinite; early emplacement of these minerals is indicated by compaction features. Data suggest the importance of depositional environment of the peat and overlying sediments as a control on sulfur occurrence. High sulfur contents in the west are related to sandstone bodies which may have allowed sulfate-bearing waters to permeate into the peat. In the east, where increases in pyrite, siderite and fusain content of the coal and coarsening of the overlying sediments suggest a change in environment, the presence or absence of pyrite-containing fusain bands may account for sulfur variability. Siderite occurrence may reflect local fluctuations in sulfate supply to the peat swamp.

  17. Apparatus and process for ultrasonic seam welding stainless steel foils

    DOE Patents [OSTI]

    Leigh, Richard W. (New York, NY)

    1992-01-01T23:59:59.000Z

    An ultrasonic seam welding apparatus having a head which is rotated to form contact, preferably rolling contact, between a metallurgically inert coated surface of the head and an outside foil of a plurality of layered foils or work materials. The head is vibrated at an ultrasonic frequency, preferably along a longitudinal axis of the head. The head is constructed to transmit vibration through a contacting surface of the head into each of the layered foils. The contacting surface of the head is preferably coated with aluminum oxide to prevent the head from becoming welded to layered stainless steel foils.

  18. CO2 Sequestration in Unmineable Coal Seams: Potential Environmental Impacts

    SciTech Connect (OSTI)

    Hedges, S.W.; Soong, Yee; McCarthy Jones, J.R.; Harrison, D.K.; Irdi, G.A.; Frommell, E.A.; Dilmore, R.M.; Pique, P.J.; Brown, T.D

    2005-09-01T23:59:59.000Z

    An initial investigation into the potential environmental impacts of CO2 sequestration in unmineable coal seams has been conducted, focusing on changes in the produced water during enhanced coalbed methane (ECBM) production using a CO2 injection process (CO2-ECBM). Two coals have been used in this study, the medium volatile bituminous Upper Freeport coal (APCS 1) of the Argonne Premium Coal Samples series, and an as-mined Pittsburgh #8 coal, which is a high volatile bituminous coal. Coal samples were reacted with either synthetic produced water or field collected produced water and gaseous carbon dioxide at 40 ?C and 50 bar to evaluate the potential for mobilizing toxic metals during CO2-ECBM/sequestration. Microscopic and x-ray diffraction analysis of the post-reaction coal samples clearly show evidence of chemical reaction, and chemical analysis of the produced water shows substantial changes in composition. These results suggest that changes to the produced water chemistry and the potential for mobilizing toxic trace elements from coalbeds are important factors to be considered when evaluating deep, unmineable coal seams for CO2 sequestration.

  19. Description of Wyoming coal fields and seam analyses

    SciTech Connect (OSTI)

    Glass, G.B.

    1983-01-01T23:59:59.000Z

    Introductory material describe coal-bearing areas, coal-bearing rocks, and the structural geology of coal-bearing areas, discussing coal rank, proximate analyses, sulfur content, heat value, trace elements, carbonizing properties, coking coal, coking operations, in-situ gasification, coal mining, and production. The paper then gives descriptions of the coal seams with proximate analyses, where available, located in the following areas: Powder River coal basin, Green River region, Hanna field, Hams Fork coal region, and Bighorn coal basin. Very brief descriptions are given of the Wind River coal basin, Jackson Hole coal field, Black Hills coal region, Rock Creek coal field, and Goshen Hole coal field. Finally coal resources, production, and reserves are discussed. 76 references.

  20. Multi-Seam Well Completion Technology: Implications for Powder River Basin Coalbed Methane Production

    SciTech Connect (OSTI)

    Office of Fossil Energy; National Energy Technology Laboratory

    2003-09-01T23:59:59.000Z

    The purpose of this study is to evaluate the potential benefits of applying multiseam [well] completion (MSC) technology to the massive stack of low-rank coals in the Powder River Basin. As part of this, the study objectives are: Estimate how much additional CBM resource would become accessible and technically recoverable--compared to the current practice of drilling one well to drain a single coal seam; Determine whether there are economic benefits associated with MSC technology utilization (assuming its widespread, successful application) and if so, quantify the gains; Briefly examine why past attempts by Powder River Basin CBM operators to use MSC technology have been relatively unsuccessful; Provide the underpinnings to a decision whether a MSC technology development and/or demonstration effort is warranted by DOE. To a great extent, this assessment builds on the previously published study (DOE, 2002), which contains many of the key references that underlie this analysis. It is available on the U.S. Department of Energy, National Energy technology Laboratory, Strategic Center for Natural Gas website (www.netl.doe.gov/scng). It is suggested that readers obtain a copy of the original study to complement the current report.

  1. Quarterly review of methane from coal seams Technology. Volume 7, Numbers 1 and 2. October 1989

    SciTech Connect (OSTI)

    Not Available

    1989-01-01T23:59:59.000Z

    Contents include: basin activities--(western Washington, Powder River Basin, Wyoming, Greater Green River Basin, Wyoming and Colorado, Piceance Basin, Colorado, San Juan Basin, Colorado and New Mexico, Raton Basin, Colorado and New Mexico, Black Warrior Basin, Alabama); features--(research in small-scale gas processing, GRI publications on coalbed methane, coalbed methane information sources); methane from coal seams research--(multiple coal seams project, hydrologic characterization of coal seams, spalling and the development of a hydraulic-fracturing strategy for coal, geologic evaluation of critical production parameters for coalbed methane resources, permeability changes resulting from gas desorption); technical events; departments.

  2. Pond Creek coal seam in eastern Kentucky - new look at an old resource

    SciTech Connect (OSTI)

    Hower, J.C.; Pollock, J.D.; Klapheke, J.G.

    1986-05-01T23:59:59.000Z

    The Middle Pennsylvania/Westphalian B Pond Creek Coal is an important low-sulfur resource in Pike and Martin Counties, Kentucky. The Breathitt Formation seam, also known as the lower Elkhorn coal, accounted for nearly 40% of Pike County's 1983 production of 22 million tons. Although the coal is nearly mined out through central Pike County, substantial reserves still exist in the northern part of the county. Past studies of the seam by the US Bureau of Mines concentrated on the utility of the seam as a coking blend, with additional consideration of the megascopic and microscopic coal petrology. The authors research has focused on the regional variations in the Pond Creek seam, with emphasis on the petrographic variations.

  3. DOE-Sponsored Field Test Finds Potential for Permanent Storage of CO2 in Lignite Seams

    Broader source: Energy.gov [DOE]

    A field test sponsored by the U.S. Department of Energy has demonstrated that opportunities to permanently store carbon in unmineable seams of lignite may be more widespread than previously documented.

  4. A parametric study of the effects of coal seam properties on gas drainage efficiency

    SciTech Connect (OSTI)

    Remmer, O.J.; Ertekin, T.; King, G.R.

    1984-09-01T23:59:59.000Z

    A mathematical model which simulates the flow of methane and water through a coal seam was developed. Partial differential equations governing the flow of methane and brine were derived from mass balances applied to an elemental volume of the reservoir. A two-dimensional cartesian coordinate system was superimposed on the coal seam and was utilized to transform the continuous flow equations to discrete form by application of finite differences.

  5. Pavement Thickness Design Parameter

    E-Print Network [OSTI]

    Pavement Thickness Design Parameter Impacts 2012 Municipal Streets Seminar November 14, 2012 Paul D. Wiegand, P.E. #12;Pavement Thickness Design · How do cities decide how thick to build their pavements;Pavement Thickness Design · Correct answer ­ A data-based analysis! · Doesn't have to be difficult and time

  6. Web Accessibility Accessibility

    E-Print Network [OSTI]

    Oklahoma, University of

    Web Accessibility #12;Accessibility Webaim This is a pre-y prolific site that vary based on the type of web content. StaFc, content managed and dynamic web sites can benefit from our accessibility review service. Rich media

  7. Sample preparation method for glass welding by ultrashort laser pulses yields higher seam strength

    SciTech Connect (OSTI)

    Cvecek, K.; Miyamoto, I.; Strauss, J.; Wolf, M.; Frick, T.; Schmidt, M.

    2011-05-01T23:59:59.000Z

    Glass welding by ultrashort laser pulses allows joining without the need of an absorber or a preheating and postheating process. However, cracks generated during the welding process substantially impair the joining strength of the welding seams. In this paper a sample preparation method is described that prevents the formation of cracks. The measured joining strength of samples prepared by this method is substantially higher than previously reported values.

  8. ENHANCED COAL BED METHANE PRODUCTION AND SEQUESTRATION OF CO2 IN UNMINEABLE COAL SEAMS

    SciTech Connect (OSTI)

    William A. Williams

    2004-10-01T23:59:59.000Z

    This is the sixth semi-annual Technical Progress report under the subject agreement. During this report period, progress was made on drilling the north, center, and south well sites. Water production commenced at the center and south well sites. New drilling plans were formulated for the last remaining well, which is in the Upper Freeport Seam at the north site. Core samples were submitted to laboratories for analytical testing. These aspects of the project are discussed in detail in this report.

  9. Quarterly Review of Methane from Coal-Seams Technology. Volume 9, Number 1, November 1991

    SciTech Connect (OSTI)

    McBane, R.A.; Schwochow, S.D.; Stevens, S.H.

    1991-11-01T23:59:59.000Z

    The paper contains: basin activities--(Powder River Basin, Wyoming and Montana, Wind River Basin-Wyoming, Greater Green River coal region-Wyoming and Colorado, Uinta Basin-Utah, Piceance Basin-Colorado, San Juan Basin-Colorado and New Mexico, Raton Basin-Colorado and New Mexico, and Black Warrior Basin-Alabama); features--(relation between basin hydrology and fruitland gas composition, San Juan Basin, Colorado and New Mexico); methane from coal seams research--(western Cretaceous coal seam project, multiple coal seams project, coalbed methane technology development in the Appalachian Basin, methane from coal deposits technical evaluation and data base (reservoir engineering and analysis), development of formation evaluation technology for coalbed methane development, improved evaluation of coal reservoirs through specialized core analysis, and effective design, real-data analysis, and post-job evaluation of hydraulic fracturing treatments); technical events--(the Coalbed Methane Forums in Denver, Eastern Coalbed Methane Forum in Tuscaloosa, Society of Petroleum Engineers--Gas Technology Symposium, and Society for Mining, Metallurgy, and Exploration--annual meeting).

  10. ENHANCED COAL BED METHANE PRODUCTION AND SEQUESTRATION OF CO2 IN UNMINEABLE COAL SEAMS

    SciTech Connect (OSTI)

    Gary L. Cairns

    2002-10-01T23:59:59.000Z

    The availability of clean, affordable energy is essential for the prosperity and security of the United States and the world in the 21st century. Carbon dioxide (CO{sub 2}) emissions to the atmosphere are an inherent part of energy-related activities, such as electricity generation, transportation, and building systems. These energy-related activities are responsible for roughly 85% of the U.S. greenhouse gas emissions, and 95% of these emissions are dominated by CO{sub 2}. Over the last few decades, an increased concentration of CO{sub 2} in the earth's atmosphere has been observed. Many scientists believe greenhouse gases, particularly CO{sub 2}, trap heat in the earth's atmosphere. Carbon sequestration technology offers an approach to redirect CO{sub 2} emissions into sinks (e.g., geologic formations, oceans, soils, and vegetation) and potentially stabilize future atmospheric CO{sub 2} levels. Coal seams are attractive CO{sub 2} sequestration sinks, due to their abundance and proximity to electricity-generation facilities. The recovery of marketable coal bed methane (CBM) provides a value-added stream, reducing the cost to sequester CO{sub 2} gas. Much research is needed to evaluate this technology in terms of CO{sub 2} storage capacity, sequestration stability, commercial feasibility and overall economics. CONSOL Energy, with support from the U.S. DOE, is conducting a seven-year program to construct and operate a coal bed sequestration site composed of a series of horizontally drilled wells that originate at the surface and extend through overlying coal seams in the subsurface. Once completed, the wells will be used to initially drain CBM from both the upper (mineable) and lower (unmineable) coal seams. After sufficient depletion of the reservoir, centrally located wells in the lower coal seam will be converted from CBM drainage wells to CO{sub 2} injection ports. CO{sub 2} will be measured and injected into the lower unmineable coal seam while CBM continues to drain from both seams. In addition to metering all injected CO{sub 2} and CBM produced, the program includes a plan to monitor horizontal migration of CO{sub 2} within the lower seam. This is the second Technical Progress report for the project. Progress to date has been focused on pre-construction activities; in particular, attaining site approvals and securing property rights for the project. This report provides a concise overview of project activity this period and plans for future work. This is the second semi-annual Technical Progress report under the subject agreement. During this report period, progress was made in completing the environmental assessment report, securing land and coal rights, and evaluating drilling strategies. These aspects of the project are discussed in detail in this report.

  11. Microgravity exploration for a sediment-filled channel intersecting a near-surface lignite seam

    E-Print Network [OSTI]

    May, Clifford John

    1984-01-01T23:59:59.000Z

    lignite seam. A 1900 foot line running north and south was located such that 1) the south end was at the location of a core which found 8 feet of lignite at a depth of 60 feet and 2) the north end was at the location of a core which found no nea... of anomalies to the full extent possible with the meter. Selection of the Station Locations A 1900 foot line running north and south was located such that 1) the south end was at the location of a core which found 8 feet of lignite at a depth of 60 feet. 2...

  12. Technique development for field inspection of cracking in seam welded ducts

    SciTech Connect (OSTI)

    Shell, Eric B.; Benson, Craig [Wyle Laboratories, Inc., Dayton, OH 45440 (United States); Liljestrom, Greg C.; Shanahan, Stephen [Wyle Laboratories, Inc., Oklahoma City, OK 73110 (United States)

    2014-02-18T23:59:59.000Z

    The resistance seam weld interfaces between alloyed and pure titanium are an in service concern due to precipitation of titanium hydride and resulting embrittlement and cracking. Several inspection techniques were developed and evaluated for field use to characterize the damage in the fleet. Electromagnetic, ultrasonic, florescent penetrant, thermographic, and radiographic techniques were considered. The ultrasonic and electromagnetic approaches were both found suitable. However, the electromagnetic approach is more desirable for field inspections, due to consistency and ease of use. The electromagnetic inspection procedure is able to discriminate between precursor damage and through cracking with sufficient sensitivity to small cracks.

  13. THE OHIO RIVER VALLEY CO2 STORAGE PROJECT - PRELIMINARY ASSESSMENT OF DEEP SALINE RESERVOIRS AND COAL SEAMS

    SciTech Connect (OSTI)

    Michael J. Mudd; Howard Johnson; Charles Christopher; T.S. Ramakrishnan, Ph.D.

    2003-08-01T23:59:59.000Z

    This report describes the geologic setting for the Deep Saline Reservoirs and Coal Seams in the Ohio River Valley CO{sub 2} Storage Project area. The object of the current project is to site and design a CO{sub 2} injection facility. A location near New Haven, WV, has been selected for the project. To assess geologic storage reservoirs at the site, regional and site-specific geology were reviewed. Geologic reports, deep well logs, hydraulic tests, and geologic maps were reviewed for the area. Only one well within 25 miles of the site penetrates the deeper sedimentary rocks, so there is a large amount of uncertainty regarding the deep geology at the site. New Haven is located along the Ohio River on the border of West Virginia and Ohio. Topography in the area is flat in the river valley but rugged away from the Ohio River floodplain. The Ohio River Valley incises 50-100 ft into bedrock in the area. The area of interest lies within the Appalachian Plateau, on the western edge of the Appalachian Mountain chain. Within the Appalachian Basin, sedimentary rocks are 3,000 to 20,000 ft deep and slope toward the southeast. The rock formations consist of alternating layers of shale, limestone, dolomite, and sandstone overlying dense metamorphic continental shield rocks. The Rome Trough is the major structural feature in the area, and there may be some faults associated with the trough in the Ohio-West Virginia Hinge Zone. The area has a low earthquake hazard with few historical earthquakes. Target injection reservoirs include the basal sandstone/Lower Maryville and the Rose Run Sandstone. The basal sandstone is an informal name for sandstones that overlie metamorphic shield rock. Regional geology indicates that the unit is at a depth of approximately 9,100 ft below the surface at the project site and associated with the Maryville Formation. Overall thickness appears to be 50-100 ft. The Rose Run Sandstone is another potential reservoir. The unit is located approximately 1,100 ft above the basal sandstone and is 100-200 ft thick. The storage capacity estimates for a 20-mile radius from the injection well ranged from 39-78 million tons (Mt) for each formation. Several other oil and gas plays have hydraulic properties conducive for injection, but the formations are generally only 5-50 ft thick in the study area. Overlying the injection reservoirs are thick sequences of dense, impermeable dolomite, limestone, and shale. These layers provide containment above the potential injection reservoirs. In general, it appears that the containment layers are much thicker and extensive than the injection intervals. Other physical parameters for the study area appear to be typical for the region. Anticipated pressures at maximum depths are approximately 4,100 psi based on a 0.45 psi/ft pressure gradient. Temperatures are likely to be 150 F. Groundwater flow is slow and complex in deep formations. Regional flow directions appear to be toward the west-northwest at less than 1 ft per year within the basal sandstone. Vertical gradients are downward in the study area. A review of brine geochemistry indicates that formation fluids have high salinity and dissolved solids. Total dissolved solids ranges from 200,000-325,000 mg/L in the deep reservoirs. Brine chemistry is similar throughout the different formations, suggesting extensive mixing in a mature basin. Unconsolidated sediments in the Ohio River Valley are the primary source of drinking water in the study area.

  14. Excavation of the Partial Seam CRIP underground coal gasification test site

    SciTech Connect (OSTI)

    Cena, R.J.; Britten, J.A.; Thorsness, C.B.

    1987-08-14T23:59:59.000Z

    In the fall of 1983, Lawrence Livermore National Laboratory conducted the Partial Seam CRIP (PSC) underground coal gasification (UCG) field experiment at the Washington Irrigation and Development Company mine near Centralia, Washington. The test, in the subbituminous Big Dirty coal seam, lasted 30 days during which time 1400 cubic meters of coal were consumed from two injection/production well combinations. In the spring of 1986, normal mining activity in the vicinity of the PSC test allowed the opportunity to carefully excavate the experiment and examine the post-burn cavities. The mining operation dug out the front and back half of the test area and most of the overburden above the UCG cavities, leaving approximately 23,000 cubic meters of earth containing the main portion of the test area undisturbed. Under direction of the Wyoming Research Institute (WRI), this remaining earth was carefully excavated, in slices perpendicular to the original injection/production line, using small earthmoving equipment to uncover and sample the final burn cavities. Preliminary results of the excavation were presented by WRI at the 12th Underground Coal Conversion Symposium. We present additional results and conclusions based on all of the information obtained. Topics covered include: comparison to material balance and thermal instrumentation data, analysis and composition of samples taken from the cavity and general cavity shape and characteristics in comparison with mechanistic models of cavity growth. 10 refs., 10 figs., 1 tab.

  15. A parametric study of the effects of coal seam properties on gas drainage efficiency

    SciTech Connect (OSTI)

    Remner, D.J.; Ertekin, T.; Sung, W.; King, G.R.

    1986-11-01T23:59:59.000Z

    A parametric study is conducted to investigate the effects of reservoir properties on gas drainage efficiency. It is found that when a coal seam is opened to production, the gas desorption and production rates increase to a maximum value and then decline. The magnitude of the early desorption peak was found to be a function of (1) the ability of the micropore matrix to supply gas to the macropore system, and (2) the coal seam's conductivity to water. The desorbing gas was observed to create a localized, high-gas-saturation bank in the area enclosed by the pressure transient. The gas bank provided an internal pressure maintenance to the reservoir, while it decreased the relative permeability to brine. This created a competing effect with respect to water production. Because water removal strongly influences the pressure decline and, consequently, the desorption rate, a unique production mechanism was observed. The study explored the interference effects on gas and water flow in multiple-well systems. It was found that the pressure drawdown caused by the multiple wells enhanced the desorption of gas into the macropore system and caused a positive interference effect on the gas flow rate. The water rate, however, encountered the more conventional negative interference effect.

  16. Quarterly review of Methane from Coal Seams Technology. Volume 9, Number 2, January 1992. Rept. for Apr-Jun 91

    SciTech Connect (OSTI)

    McBane, R.A.; Schwochow, S.D.; Stevens, S.H.

    1992-01-01T23:59:59.000Z

    The following reports summarize the results of recent exploration, testing, and production in the Wind River Basin, Wyoming; Powder River Basin, Wyoming and Montana; Greater Green River Coal Region, Wyoming and Colorado; Piceance Basin, Colorado; San Juan Basin, Colorado and New Mexico; Raton Basin, Colorado and New Mexico; Black Warrior Basin, Alabama and the Northern and Central Appalachian Basins. Contents also include: Advances in Laboratory Measurement Techniques of Relative Permeability and Capillary Pressure for Coal Seams; Methane from Coal Seams Research; and Technical Events.

  17. Quarterly Review of Methane from Coal Seams Technology. Volume 8, Number 3, April 1991. Rept. for Jul-Sep 90

    SciTech Connect (OSTI)

    McBane, R.A.; Schwochow, S.D.; Stevens, S.H.

    1991-01-01T23:59:59.000Z

    Contents include reports on: Powder River Basin, Wyoming and Montana; Greater Green River Coal Region, Wyoming and Colorado; Uinta Basin, Utah; Piceance Basin, Colorado; San Juan Basin, Colorado and New Mexico; Raton Basin, Colorado and New Mexico; Black Warrior Basin, Alabama; Experimental Fracturing and Propping of Coal-Implications for Hydraulic Fracture Design; Western Cretaceous Coal Seams Project; Multiple Coal Seams Project; Coalbed Methane Technology Development in the Appalachian Basin; Reservoir Engineering and Analysis and Geologic Evaluation of Critical Production Parameters for Coalbed Methane Resources.

  18. Quarterly review of methane from coal-seams technology. Volume 7, Number 3, July-September 1989

    SciTech Connect (OSTI)

    Not Available

    1990-01-01T23:59:59.000Z

    The report contains: sources of coal well information; Powder River Basin, Wyoming; greater Green River coal region, Wyoming and Colorado; Piceance Basin, Colorado; San Juan Basin, Colorado and New Mexico; Raton Basin, Colorado and New Mexico; Black Warrior Basin, Alabama; the United States coalbed methane resource; western cretaceous coal seams project; multiple coal seams project; spalling and the development of a hydraulic fracturing strategy for coal; geologic evaluation of critical production parameters for coalbed methane resources; coalbed methane opportunities in Alberta; the coalbed methane forum; eastern coalbed methane forum.

  19. Thick film hydrogen sensor

    DOE Patents [OSTI]

    Hoffheins, Barbara S. (Knoxville, TN); Lauf, Robert J. (Oak Ridge, TN)

    1995-01-01T23:59:59.000Z

    A thick film hydrogen sensor element includes an essentially inert, electrically-insulating substrate having deposited thereon a thick film metallization forming at least two resistors. The metallization is a sintered composition of Pd and a sinterable binder such as glass frit. An essentially inert, electrically insulating, hydrogen impermeable passivation layer covers at least one of the resistors.

  20. Data base for the analysis of compositional characteristics of coal seams and macerals. Part 7. Petrographic variation due to depositional setting of the lower Kittanning seam, western Pennsylvania. Final report

    SciTech Connect (OSTI)

    Allshouse, S.D.; Davis, A.

    1984-01-01T23:59:59.000Z

    Detailed megascopic and microscopic petrographic analyses were conducted on samples of the Lower Kittanning seam from western Pennsylvania. Relationships were sought between the paleoenvironmental setting of the coal swamp and the vertical and lateral variability of lithotypes, maceral composition and vitrinite types. Megascopically, the four samples collected from the freshwater facies of the seam are similar in appearance and relative lithotype composition, and display no distinct vertical zonations. The sample from the marine-influenced central portion of the basin (PSOC-1340) possesses a marked vertical zonation into a bright lower zone and a dull upper zone. The lower zone is similar in appearance to the freswater samples. Detailed microscopic analyses revealed that the vertical zonation of PSOC-1340 is apparent in both the maceral and vitrinite type composition. No similar zonation is apparent in the microscopic analysis of the four freshwater facies samples. Similarities between the lower zone of PSOC-1340 and the whole seam of the freshwater samples are most apparent in the vitrinite-type analysis. The lower zone of PSOC-1340 and the whole seam from the freshwater facies are considered to be laterally equivalent coal types. The dull upper zone of PSOC-1340 is considered to have formed in response to a major change in the paleoenvironment of the swamp, probably a marine transgression. 49 references, 25 figures, 15 tables.

  1. Unconventional gas sources. Executive summary. [Coal seams, Devonian shale, geopressured brines, tight gas reservoirs

    SciTech Connect (OSTI)

    Not Available

    1980-12-01T23:59:59.000Z

    The long lead time required for conversion from oil or gas to coal and for development of a synthetic fuel industry dictates that oil and gas must continue to supply the United States with the majority of its energy requirements over the near term. In the interim period, the nation must seek a resource that can be developed quickly, incrementally, and with as few environmental concerns as possible. One option which could potentially fit these requirements is to explore for, drill, and produce unconventional gas: Devonian Shale gas, coal seam gas, gas dissolved in geopressured brines, and gas from tight reservoirs. This report addresses the significance of these sources and the economic and technical conditions under which they could be developed.

  2. Effects of stress-dependent permeability on methane production from deep coal seams

    SciTech Connect (OSTI)

    McKee, C.R.; Bell, G.J.; Bumb, A.C.

    1984-05-01T23:59:59.000Z

    Methane resources are frequently associated with deeply buried coal seams which are also saturated with water; therefore, knowledge of their hydrologic properties is essential. As the formation pressure is lowered during dewatering, permeability may decline by one to two orders of magnitude. Theoretical relationships have been developed which fit laboratory data well for porosity and permeability as a function of effective stress. It was discovered that for practical purposes permeability is a function only of effective stress and the ratio of initial fracture porosity to matrix compressibility (fracture closure pressure). An approximate analytical solution for well testing has been obtained using the model developed. A new method for pump test analysis is then proposed.

  3. Underground coal gasification field experiment in the high-dipping coal seams

    SciTech Connect (OSTI)

    Yang, L.H.; Liu, S.Q.; Yu, L.; Zhang, W. [China University of Mining & Technology, Xuzhou (China). College of Resources & Geoscience

    2009-07-01T23:59:59.000Z

    In this article the experimental conditions and process of the underground gasification in the Woniushan Mine, Xuzhou, Jiangsu Province are introduced, and the experimental results are analyzed. By adopting the new method of long-channel, big-section, and two-stage underground coal gasification, the daily gas production reaches about 36,000 m{sup 3}, with the maximum output of 103,700 m{sup 3}. The daily average heating value of air gas is 5.04 MJ/m{sup 3}, with 13.57 MJ/m{sup 3} for water gas. In combustible compositions of water gas, H{sub 2} contents stand at over 50%, with both CO and CH{sub 4} contents over 6%. Experimental results show that the counter gasification can form new temperature conditions and increase the gasification efficiency of coal seams.

  4. Detailed spectroscopic analysis of SN 1987A: The distance to the LMC using the SEAM method

    SciTech Connect (OSTI)

    Mitchell, Robert C.; Baron, E.; Branch, David; Hauschildt, Peter H.; Nugent, Peter E.; Lundqvist, Peter; Blinnikov, Sergei; Pun, Chun S.J.

    2002-05-21T23:59:59.000Z

    Supernova 1987A remains the most well-studied supernova to date. Observations produced excellent broad-band photometric and spectroscopic coverage over a wide wavelength range at all epochs. We model the observed spectra from Day 1 to Day 81 using a hydrodynamical model. We show that good agreement can be obtained at times up to about 60 days, if we allow for extended nickel mixing. Later than about 60 days the observed Balmer lines become stronger than our models can reproduce. We show that this is likely due to a more complicated distribution of gamma-rays than we allow for in our spherically symmetric calculations. We present synthetic light curves in UBVRIJHK and a synthetic bolometric light curve. Using this broad baseline of detailed spectroscopic models we find a distance modulus mu = 18.5 +/- 0.2 using the SEAM method of determining distances to supernovae. We find that the explosion time agrees with that of the neutrino burst and is constrained at 68 percent confidence to within +/- 0.9 days. We argue that the weak Balmer lines of our detailed model calculations casts doubt on the accuracy of the purely photometric EPM method. We also suggest that Type IIP supernovae will be most useful as distance indicators at early times due to a variety of effects.

  5. Structural evaluation of WIPP disposal room raised to Clay Seam G.

    SciTech Connect (OSTI)

    Park, Byoung Yoon (Sandia National Laboratories, Carlsbad, NM); Holland, John F. (Sandia National Laboratories, Albuquerque, NM)

    2007-09-01T23:59:59.000Z

    An error was discovered in the ALGEBBRA script used to calculate the disturbed rock zone around the disposal room and the shear failure zone in the anhydrite layers in the original version. To correct the error, a memorandum of correction was submitted according to the Waste Isolation Pilot Plant (WIPP) Quality Assurance program. The recommended course of action was to correct the error, to repeat the post-process, and to rewrite Section 7.4, 7.5, 8, and Appendix B in the original report. The sections and appendix revised by the post-process using the corrected ALGEBRA scripts are provided in this revision. The original report summarizes a series of structural calculations that examine effects of raising the WIPP repository horizon from the original design level upward 2.43 meters. Calculations were then repeated for grid changes appropriate for the new horizon raised to Clay Seam G. Results are presented in three main areas: (1) Disposal room porosity, (2) Disturbed rock zone characteristics, and (3) Anhydrite marker bed failure. No change to the porosity surface for the compliance re-certification application is necessary to account for raising the repository horizon, because the new porosity surface is essentially identical. The disturbed rock zone evolution and devolution are charted in terms of a stress invariant criterion over the regulatory period. This model shows that the propagation of the DRZ into the surrounding rock salt does not penetrate through MB 139 in the case of both the original horizon and the raised room. Damaged salt would be expected to heal in nominally 150 years. The shear failure does not occur in either the upper or lower anhydrite layers at the moment of excavation, but appears above and below the middle of the pillar one day after the excavation. The damaged anhydrite is not expected to heal as the salt in the DRZ is expected to.

  6. Critical thickness in silicone thermosets

    E-Print Network [OSTI]

    Deopura, Manish, 1975-

    2005-01-01T23:59:59.000Z

    Critical thickness effects are utilized to achieve high fracture toughness in brittle polymers. The postulate of critical thickness, which is: "Macroscopically brittle polymers deform in a ductile fashion below a critical ...

  7. ENHANCED COAL BED METHANE PRODUCTION AND SEQUESTRATION OF CO2 IN UNMINEABLE COAL SEAMS

    SciTech Connect (OSTI)

    Gary L. Cairns

    2003-10-01T23:59:59.000Z

    This is the fourth semi-annual Technical Progress report under the subject agreement. During this report period, progress was made on developing the south well site, reclaiming the north access road, and assessing drilling at the north well site. These aspects of the project, as well as progress on public communications, are discussed in detail in this report.

  8. The Mining Machine as a Seismic Source for In-seam Reflection Mapping Neil Taylor*, Jim Merriam and Don Gendzwill, University of Saskatchewan, Canada; Arnfinn Prugger, Potash

    E-Print Network [OSTI]

    Merriam, James

    The Mining Machine as a Seismic Source for In-seam Reflection Mapping Neil Taylor*, Jim Merriam, Canada Summary Mapping the geology around mine zones is a key economic and safety concern at Saskatchewan potash mines. Experiments were carried out to investigate the feasibility of using a mining machine

  9. Quarterly review of methane from coal seams technology. Volume 10, Number 2, October 1992. Report for April-June 1992

    SciTech Connect (OSTI)

    McBane, R.A.; Scgwichow, S.D.; Lombardi, T.E.; Thompson, D.A.

    1992-10-01T23:59:59.000Z

    Research in the area of methane from coal seams is directed toward adapting and improving techniques for producing natural gas from coal and associated strata. Verification field experiments are being conducted at various sites to validate concepts for geology, geophysical diagnostics, completion techniques, fracturing, operations, and reservoir modeling. The reports summarize the results of recent exploration, testing, and production in the coal basins. In part because of the unprecedented drilling and development activity in the San Juan and Black Warrior basins, new wells have become too numerous to track individually. Consequently, the detailed well activity tables and basin index maps are no longer presented; only condensed statistical tables accompany selected basin narratives. For details of individual wells, readers are referred to publications of the commercial reporting services and to the respective state oil and gas regulatory agencies.

  10. Laser detection of material thickness

    DOE Patents [OSTI]

    Early, James W. (Los Alamos, NM)

    2002-01-01T23:59:59.000Z

    There is provided a method for measuring material thickness comprising: (a) contacting a surface of a material to be measured with a high intensity short duration laser pulse at a light wavelength which heats the area of contact with the material, thereby creating an acoustical pulse within the material: (b) timing the intervals between deflections in the contacted surface caused by the reverberation of acoustical pulses between the contacted surface and the opposite surface of the material: and (c) determining the thickness of the material by calculating the proportion of the thickness of the material to the measured time intervals between deflections of the contacted surface.

  11. Data base for the analysis of compositional characteristics of coal seams and macerals. Quarterly technical progress report, May-July 1980

    SciTech Connect (OSTI)

    Davis, Alan; Suhr, N. H.; Spackman, W.; Painter, P. C.; Walker, P. L.; Given, P. H.

    1980-10-01T23:59:59.000Z

    The basic objectives of this new program are, firstly, to understand the systematic relationships between the properties of coals and macerals, and, secondly, to determine the lateral and vertical variability in the properties of a single seam imposed by varying environmental conditions at the time of coal formation. Thirty-four coal samples were collected during the quarter from Pennsylvania and Illinois. To date, 54 vitrinite concentrates have been hand picked and will be studied by a range of physical and chemical techniques. One hundred and forty coal samples and 53 printouts of coal data were provided on request to the coal research community. The Lower Kittanning seam has been selected for the study of the variability in chemical, petrographic, mineralogic, fluid, and conversion properties of a single seam. A description of the structural and stratigraphic settings of the important coal seam as they relate to this investigation is given. Bivariate plots of data from the Lower Kittanning seam are presented. The fluid temperature range as measured with the Gieseler plastometer reaches a maximum at a reflectance of 1.10 to 1.15% and carbon content of 87 to 88% dmmf. Liquefaction conversion in a tubing-bomb reactor with tetralin shows a linear decrease with rank (reflectance). The problems associated with the application Fourier Transform Infrared Spectroscopy to the characterization of coal structure are critically discussed. The micropore surface areas and micropore volumes of three selected coals and a vitrinite concentrate, as measured from uptake of CO/sub 2/ at 25/sup 0/C, increased with decreasing particle size. Work on measurements of apparent densities and uptake of methanol and water is in progress.

  12. Resource Limits and Conversion Efficiency with Implications for Climate Change

    E-Print Network [OSTI]

    Croft, Gregory Donald

    2009-01-01T23:59:59.000Z

    historical trends in coal seam thickness and depth andanthracite and bituminous coal seams exceeding 28 inches indepths in ever thinner coal seams. The goal of Part I of

  13. Welding for testability: An approach aimed at improving the ultrasonic testing of thick-walled austenitic and dissimilar metal welds

    SciTech Connect (OSTI)

    Wagner, Sabine; Dugan, Sandra [Materials Testing Institute University of Stuttgart (MPA), Pfaffenwaldring 32, 70569 Stuttgart (Germany); Barth, Martin; Schubert, Frank; Köhler, Bernd [Fraunhofer Institute for Nondestructive Testing, Dresden Branch (IZFP-D), Maria-Reiche-Str. 2, 01109 Dresden (Germany)

    2014-02-18T23:59:59.000Z

    Austenitic and dissimilar welds in thick walled components show a coarse grained, dendritic microstructure. Therefore, ultrasonic testing has to deal with beam refraction, scattering and mode conversion effects. As a result, the testing techniques typically applied for isotropic materials yield dissatisfying results. Most approaches for improvement of ultrasonic testing have been based on modeling and improved knowledge of the complex wave propagation phenomena. In this paper, we discuss an alternative approach: is it possible to use a modified welding technology which eliminates the cause of the UT complications, i.e. the large-grained structure of the weld seams? Various modification parameters were tested, including: TIG current pulsing, additional DC and AC magnetic fields, and also additional external vibrations during welding. For all welds produced under different conditions, the grain structure of the weld seam was characterized by optical and GIUM microstructure visualizations on cross sections, wave field propagation measurements, and ultrasonic tests of correct detectability of flaws. The mechanical properties of the welds were also tested.

  14. System for measuring film thickness

    DOE Patents [OSTI]

    Batishko, Charles R. (West Richland, WA); Kirihara, Leslie J. (Richland, WA); Peters, Timothy J. (Richland, WA); Rasmussen, Donald E. (Richland, WA)

    1990-01-01T23:59:59.000Z

    A system for determining the thicknesses of thin films of materials exhibiting fluorescence in response to exposure to excitation energy from a suitable source of such energy. A section of film is illuminated with a fixed level of excitation energy from a source such as an argon ion laser emitting blue-green light. The amount of fluorescent light produced by the film over a limited area within the section so illuminated is then measured using a detector such as a photomultiplier tube. Since the amount of fluorescent light produced is a function of the thicknesses of thin films, the thickness of a specific film can be determined by comparing the intensity of fluorescent light produced by this film with the intensity of light produced by similar films of known thicknesses in response to the same amount of excitation energy. The preferred embodiment of the invention uses fiber optic probes in measuring the thicknesses of oil films on the operational components of machinery which are ordinarily obscured from view.

  15. JV Task 109 - Risk Assessment and Feasibility of Remedial Alternatives for Coal Seam at Garrison, North Dakota

    SciTech Connect (OSTI)

    Jarda Solc

    2008-01-01T23:59:59.000Z

    The Energy & Environmental Research Center (EERC) conducted an evaluation of alternative technologies for remediation of hydrocarbon-contaminated coal seam, including impacted soils and groundwater in Garrison, North Dakota. Geotechnical characteristics of the impacted fractured coal seam provide for rapid off-site contaminant transport, with the currently identified impacted zone covering an area of about 40 acres. Regardless of the exposure mechanism (free, dissolved, or vapor phase), results of laboratory tests confirmed secondary release of gasoline-based compounds from contaminated coal to water reaching concentrations documented from the impacted areas. Coal laboratory tests confirmed low risks associated with spontaneous ignition of gasoline-contaminated coal. High contaminant recovery efficiency for the vacuum-enhanced recovery pilot tests conducted at three selected locations confirmed its feasibility for full-scale remediation. A total of 3500 gallons (13.3 m{sup 3}) of contaminated groundwater and over 430,000 ft{sup 3} (12,200 m{sup 3}) of soil vapor were extracted during vacuum-enhanced recovery testing conducted July 17-24, 2007, resulting in the removal of about 1330 lb (603 kg) of hydrocarbons, an equivalent of about 213 gallons of product. The summary of project activities is as follows: (1) Groundwater and vapor monitoring for existing wells, including domestic wells, conducted on a monthly basis from December 12, 2006, to June 6, 2007. This monitoring activity conducted prior to initiation of the EERC field investigation was requested by NDDH in a letter dated December 1, 2006. (2) Drilling of 20 soil borings, including installation of extraction and monitoring wells conducted April 30-May 4 and May 14-18, 2007. (3) Groundwater sampling and water-table monitoring conducted June 11-13, 2007. (4) Evaluation of the feasibility of using a camera survey for delineation of mining voids conducted May 16 and September 10-11, 2007. (5) Survey of all wells at the site. (6) Laboratory testing of the coal samples conducted from August to October 2007. (7) Vacuum-enhanced pilot tests at three locations: Cenex corner, Tesoro corner, and cavity area, conducted July 17-24, 2007. (8) Verification of plume delineation for a full-scale design and installation of six monitoring wells September 10-13, 2007. (9) Groundwater sampling and monitoring conducted September 11-12, September 26, and October 3, 2007. (10) Feasibility evaluation of alternative technologies/strategies for the subject site.

  16. Remote File Access 2010

    E-Print Network [OSTI]

    University of Technology, Sydney

    Remote File Access 2010 Mac Users Guide #12;Remote File Access: MAC Users Guide 2010 2 Table Remote File Access 11 Part IV: Using Remote File Access 15 Part V: FAQ 24 #12;Remote File Access: MAC Users Guide 2010 3 1. What is Remote File Access? UTS Remote File Access service is provided to enable

  17. Accessing PDSF

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP Related LinksATHENA couldAboutClean WaterAccessing HPSS

  18. Open Access

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTest and Evaluation |quasicrystals65 (9/12) Page 1 of

  19. OPEN ACCESS

    E-Print Network [OSTI]

    Thomas F. Kresina; Robert Lubran

    Abstract: Providing access to and utilization of medication assisted treatment (MAT) for the treatment of opioid abuse and dependence provides an important opportunity to improve public health. Access to health services comprising MAT in the community is fundamental to achieve broad service coverage. The type and placement of the health services comprising MAT and integration with primary medical care including human immunodeficiency virus (HIV) prevention, care and treatment services are optimal for addressing both substance abuse and co-occurring infectious diseases. As an HIV prevention intervention, integrated (same medical record for HIV services and MAT services) MAT with HIV prevention, care and treatment programs provides the best “one stop shopping ” approach for health service utilization. Alternatively, MAT, medical and HIV services can be separately managed but co-located to allow convenient utilization of primary care, MAT and HIV services. A third approach is coordinated care and treatment, where primary care, MAT and HIV services are provided at distinct locations and case managers, peer facilitators, or others promote direct service utilization at the various locations. Developing a continuum of care for patients with opioid dependence throughout

  20. PULSED EDDY CURRENT THICKNESS MEASUREMENT OF SELECTIVE PHASE CORROSION ON NICKEL ALUMINUM BRONZE VALVES

    SciTech Connect (OSTI)

    Krause, T. W.; Harlley, D.; Babbar, V. K.; Wannamaker, K. [Department of Physics, Royal Military College of Canada, Kingston, ON, K7K 7B4 (Canada)

    2010-02-22T23:59:59.000Z

    Nickel Aluminum Bronze (NAB) is a material with marine environment applications that under certain conditions can undergo selective phase corrosion (SPC). SPC involves the removal of minority elements while leaving behind a copper matrix. Pulsed eddy current (PEC) was evaluated for determination of SPC thickness on a NAB valve section with access from the surface corroded side. A primarily linear response of PEC amplitude, up to the maximum available SPC thickness of 4 mm was observed. The combination of reduced conductivity and permeability in the SPC phase relative to the base NAB was used to explain the observed sensitivity of PEC to SPC thickness variations.

  1. Development of hydraulic-fracturing models for application to coal-seam methane drainage. Final report, January 17, 1983-June 30, 1984

    SciTech Connect (OSTI)

    Hanson, M.E.; Mavko, B.B.; Thorson, L.D.

    1985-03-29T23:59:59.000Z

    The objective of this project is to develop two- and three-dimensional models the industry can use to design and understand hydraulic fracture treatments for stimulating methane production from coal seams. Initially, two-dimensional models were used to study pressure-driven fractures near a stress barrier. The results illustrated that barriers can arrest fracture propagation, cause the wetted length to approach the fracture tip, and change the aperture shape. It became clear that 3-dimensional calculations were necessary for analysis of the coal-seam problem. Work was begun on the circular model, the simplest of the 3-D models. It was determined that the fluid-flow equations using the common uniform-aperture approximation do not properly conserve mass when the flow slot varies with position and time. The problem was corrected by carefully combining the equations for radial flow and the elasticity equations for governing aperture. The model was successfully applied to show the effects of changes in rates, viscosities, and elastic modulus.

  2. Method and apparatus for monitoring the thickness of a coal rib during rib formation

    DOE Patents [OSTI]

    Mowrey, Gary L. (Jefferson Boro, PA); Ganoe, Carl W. (Pittsburgh, PA); Monaghan, William D. (Dravosburg, PA)

    1996-01-01T23:59:59.000Z

    Apparatus for monitoring the position of a mining machine cutting a new entry in a coal seam relative to an adjacent, previously cut entry to determine the distance between a near face of the adjacent previously cut entry and a new face adjacent thereto of a new entry being cut by the mining machine which together define the thickness of a coal rib being formed between the new entry and the adjacent previously cut entry during the new entry-cutting operation. The monitoring apparatus; includes a transmit antenna mounted on the mining machine and spaced inwardly from the new face of the coal rib for transmitting radio energy towards the coal rib so that one portion of the radio energy is reflected by the new face which is defined at an air-coal interface between the new entry and the coal rib and another portion of the radio energy is reflected by the near face of the coal rib which is defined at an air-coal interface between the coal rib and the adjacent previously cut entry. A receive antenna mounted on the mining machine and spaced inwardly of the new face of the coal rib receives the one portion of the radio energy reflected by the new face and also receives the another portion of the radio energy reflected by the near face. A processor determines a first elapsed time period equal to the time required for the one portion of the radio energy reflected by the new face to travel between the transmit antenna and the receive antenna and also determines a second elapsed time period equal to the time required for the another portion of the radio energy reflected by the near face to travel between the transmit antenna and the receive antenna and thereafter calculates the thickness of the coal rib being formed as a function of the difference between the first and second elapsed time periods.

  3. Capital Access Program (Vermont)

    Broader source: Energy.gov [DOE]

    The Capital Access Program provides loan guarantees to small businesses seeking access to commercial credit. Premiums paid by the borrower and matched by Vermont Economic Development Authority fund...

  4. BUILDING MANAGEMENT & RESTRICTED ACCESS

    E-Print Network [OSTI]

    Johnston, Daniel

    BUILDING MANAGEMENT & RESTRICTED ACCESS Plan Annex 2014 VIII #12;#12;#12;The University of Texas at Austiniv #12;Building Management & Restricted Access Plan Annex v CONTENTS RECORD OF CHANGES .......................................................................................................15 J. BUILDING SECURITY OPERATIONS RESTRICTED ACCESS PROCEDURES FOR BUILDINGS ON ELECTRONIC ACCESS

  5. Assessment of underground coal gasification in bituminous coals: catalog of bituminous coals and site selection. Appendix A. National coal resource data system: Ecoal, Wcoal, and Bmalyt. Final report, Phase I. [Bituminous coal; by state; coal seam depth and thickness; identification

    SciTech Connect (OSTI)

    None

    1982-01-31T23:59:59.000Z

    Appendix A is a catalog of the bituminous coal in 29 states of the contiguous United States which contain identified bituminous coal resources.

  6. Turbine airfoil with outer wall thickness indicators

    DOE Patents [OSTI]

    Marra, John J; James, Allister W; Merrill, Gary B

    2013-08-06T23:59:59.000Z

    A turbine airfoil usable in a turbine engine and including a depth indicator for determining outer wall blade thickness. The airfoil may include an outer wall having a plurality of grooves in the outer surface of the outer wall. The grooves may have a depth that represents a desired outer surface and wall thickness of the outer wall. The material forming an outer surface of the outer wall may be removed to be flush with an innermost point in each groove, thereby reducing the wall thickness and increasing efficiency. The plurality of grooves may be positioned in a radially outer region of the airfoil proximate to the tip.

  7. Open Access Task Force Open Access to

    E-Print Network [OSTI]

    Jiang, Huiqiang

    Libraries Initiative launched by National Science Foundation; Social Sciences Research Network (SSRN Library System rgmiller@pitt.edu #12;Open Access Task Force Open Access is... · A family of copyright · The only constraint on reproduction and distribution, and the only role for copyright in this domain

  8. Accessibility to dental services 

    E-Print Network [OSTI]

    Evenden, Craig Andrew

    2007-08-15T23:59:59.000Z

    . Accessibility indexes need to be developed that incorporate a number of characteristics that are currently affecting accessibility to dental services. More research needs to be conducted at a local level to provide better advice to health planners and policy...

  9. NANO EXPRESS Open Access Multiscale investigation of graphene layers on

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    NANO EXPRESS Open Access Multiscale investigation of graphene layers on 6H-SiC(000-1) Antoine , Cecile Naud2 , Jean-Yves Veuillen2* Abstract In this article, a multiscale investigation of few graphene, the authors show that the UHV growth yields few layer graphene (FLG) with an average thickness given by Auger

  10. Systematic Evaluation of Jc Decrease in Thick Film Coated Conductors

    SciTech Connect (OSTI)

    Alex Ignatiev; Dr. Amit Goyal

    2006-05-10T23:59:59.000Z

    Address both thickness dependence of Jc, in thick film YBCO coated conductors through an application of a suite of new measurement techniques to thick film wire samples produced by commercially viable coated conductor technologies.

  11. Thin, thick and dark discs in LCDM

    E-Print Network [OSTI]

    J. I. Read; G. Lake; O. Agertz; Victor P. Debattista

    2008-06-26T23:59:59.000Z

    In a LCDM cosmology, the Milky Way accretes satellites into the stellar disc. We use cosmological simulations to assess the frequency of near disc plane and higher inclination accretion events, and collisionless simulations of satellite mergers to quantify the final state of the accreted material and the effect on the thin disc. On average, a Milky Way-sized galaxy has 3 subhalos with vmax>80km/s; 7 with vmax>60km/s; and 15 with vmax>40km/s merge at redshift z>1. Assuming isotropic accretion, a third of these merge at an impact angle disc plane by dynamical friction. Their accreted stars and dark matter settle into a thick disc. The stellar thick disc qualitatively reproduces the observed thick disc at the solar neighbourhood, but is less massive by a factor ~2-10. The dark matter disc contributes 0.25-1 times the halo density at the solar position. Although not likely to be dynamically interesting, the dark disc has important implications for the direct detection of dark matter because of its low velocity with respect to the Earth. Higher inclination encounters (>20 degrees) are twice as likely as low inclination ones. These lead to structures that closely resemble the recently discovered inner/outer stellar halos. They also do more damage to the Milky Way stellar disc creating a more pronounced flare, and warp; both long-lived and consistent with current observations. The most massive mergers (vmax>80km/s) heat the thin disc enough to produce a thick disc. These heated thin disc stars are essential for obtaining a thick disc as massive as that seen in the Milky Way; they likely comprise some ~50-90% of the thick disc stars. The Milky Way thin disc must reform from fresh gas after z=1 [abridged].

  12. Gas turbine bucket wall thickness control

    DOE Patents [OSTI]

    Stathopoulos, Dimitrios (Glenmont, NY); Xu, Liming (Greenville, SC); Lewis, Doyle C. (Greer, SC)

    2002-01-01T23:59:59.000Z

    A core for use in casting a turbine bucket including serpentine cooling passages is divided into two pieces including a leading edge core section and a trailing edge core section. Wall thicknesses at the leading edge and the trailing edge of the turbine bucket can be controlled independent of each other by separately positioning the leading edge core section and the trailing edge core section in the casting die. The controlled leading and trailing edge thicknesses can thus be optimized for efficient cooling, resulting in more efficient turbine operation.

  13. Effect of Thickness on the Structure, Composition and Properties...

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

    Effect of Thickness on the Structure, Composition and Properties of Titanium Nitride Nano-Coatings. Effect of Thickness on the Structure, Composition and Properties of Titanium...

  14. Observation of induced fractures intercepted by mining in the Warrior Basin, Alabama. Topical report. Rock Creek methane from multiple coal seams completion project

    SciTech Connect (OSTI)

    Steidl, P.F.

    1991-12-01T23:59:59.000Z

    This report summarizes research and inspection of induced fractures that have been intercepted by mining. Induced fractures from 13 wells intercepted by mining were inspected at the Jim Walter Resources' (JWR) No. 4 and 5 Mines in Tuscaloosa County, and the Oak Grove Mine in Jefferson County, Alabama. In this area the Mary Lee and Blue Creek coalbeds average 1.3 ft and 4 to 5.5 ft, respectively at depths of about 2,000 ft at the JWR mines and 1,000 ft in the Oak Grove Mine. These seams are usually separated by 2 to 10 ft of rock parting. The wells were completed open hole from 1982 to 1986. Hydraulic fracture treatments were used to stimulate production. Some expected results include: in general, the fractures followed the coal face cleat direction; they were vertical, and were sandpacked close to the wall. Other observations include the following: (1) most of the fractures and proppant were present in the parting and roof rock, (2) results were similar in the JWR and Oak Grove Mines even though there is 1,000 ft less overburden at the Oake Grove Mine, and (3) no horizontal fractures were observed in the study; though other stimulations have propagated horizontal fractures at Oak Grove.

  15. Thick beryllium coatings by magnetron sputtering

    SciTech Connect (OSTI)

    Wu, H; Nikroo, A; Youngblood, K; Moreno, K; Wu, D; Fuller, T; Alford, C; Hayes, J; Detor, A; Wong, M; Hamza, A; van Buuren, T; Chason, E

    2011-04-14T23:59:59.000Z

    Thick (>150 {micro}m) beryllium coatings are studied as an ablator material of interest for fusion fuel capsules for the National Ignition Facility (NIF). As an added complication, the coatings are deposited on mm-scale spherical substrates, as opposed to flats. DC magnetron sputtering is used because of the relative controllability of the processing temperature and energy of the deposits. We used ultra small angle x-ray spectroscopy (USAXS) to characterize the void fraction and distribution along the spherical surface. We investigated the void structure using a combination focused ion beam (FIB) and scanning electron microscope (SEM), along with transmission electron microscopy (TEM). Our results show a few volume percent of voids and a typical void diameter of less than two hundred nanometers. Understanding how the stresses in the deposited material develop with thickness is important so that we can minimize film cracking and delamination. To that end, an in-situ multiple optical beam stress sensor (MOSS) was used to measure the stress behavior of thick Beryllium coatings on flat substrates as the material was being deposited. We will show how the film stress saturates with thickness and changes with pressure.

  16. Free Energy of thick Center Vortices

    E-Print Network [OSTI]

    Ch. Korn; H. Reinhardt; T. Tok

    2005-08-05T23:59:59.000Z

    The free energy of thick center vortices is calculated in continuum Yang-Mills theory in one-loop approximation using the proper time regularization. The vortices are represented by Abelian gauge field configurations on the torus which satisfy twisted boundary conditions.

  17. Demystifying Open Access

    SciTech Connect (OSTI)

    Mele, Salvatore

    2007-05-14T23:59:59.000Z

    The tenets of Open Access are to grant anyone, anywhere and anytime free access to the results of scientific research. HEP spearheaded the Open Access dissemination of scientific results with the mass mailing of preprints in the pre-WWW era and with the launch of the arXiv preprint system at the dawn of the '90s. The HEP community is now ready for a further push to Open Access while retaining all the advantages of the peer-review system and, at the same time, bring the spiralling cost of journal subscriptions under control. I will present a possible plan for the conversion to Open Access of HEP peer-reviewed journals, through a consortium of HEP funding agencies, laboratories and libraries: SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics). SCOAP3 will engage with scientific publishers towards building a sustainable model for Open Access publishing, which is as transparent as possible for HEP authors. The current system in which journals income comes from subscription fees is replaced with a scheme where SCOAP3 compensates publishers for the costs incurred to organise the peer-review service and give Open Access to the final version of articles. SCOAP3 will be funded by all countries active in HEP under a 'fair share' scenario, according to their production of HEP articles. In this talk I will present a short overview of the history of Open Access in HEP, the details of the SCOAP3 model and the outlook for its implementation.

  18. Identity and Access Management: Access Management Survey 1 Access Management Survey Questions

    E-Print Network [OSTI]

    Maroncelli, Mark

    Identity and Access Management: Access Management Survey 1 Access Management Survey Questions has developed a survey to solicit your input for Access Management. Please take a moment to complete be submitted by Friday May 14, 2010. #12;Identity and Access Management: Access Management Survey 2 Group

  19. Internet architecture Access networks

    E-Print Network [OSTI]

    access points switch cellular tower Optical 8iber Network Core Internet links " connect end systems/routers/switches/access points " fiber, copper and radio " transmission rate " Message placed on one link end is delivered to the other end " No contention for use of transmission media

  20. ATLAS Data Access Policy

    E-Print Network [OSTI]

    The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    ATLAS has fully supported the principle of open access in its publication policy. This document outlines the policy of ATLAS as regards open access to data at different levels as described in the DPHEP model. The main objective is to make the data available in a usable way to people external to the ATLAS collaboration.

  1. Ultrasonic thickness testing of aging offshore structures

    E-Print Network [OSTI]

    Ellison, Brian Kirk

    1999-01-01T23:59:59.000Z

    . 14 2. 15 2. 16 2. 17 2. 18 New Anode. Spent Anode 1989 JIP Specimens. Dual Transducer Sound Paths. Specimens for Feasibility Studies (View I). Specimens for Feasibility Studies (View 2) . General Nomenclature. Transducer / Surface... study in an attempt to improve the effectiveness of ultrasonic thickness testing. Motivation for research stems from a joint industry project (JIP) that took place at Texas AIkM University (TAMU) from 1989 to 1990 (Moehlman 1990). In 1989, several...

  2. Access Management Software Requirements Specification

    E-Print Network [OSTI]

    Maroncelli, Mark

    with a digital identity record. Attributes may be general or personal. A subset of all attributes defines. IAM Defined #12;· Access to Protected Library Resources · Library Staff Access to Integrated Library System · Access to Library Public Workstations · HMC Affiliate · Access to Library Resources · Access

  3. access study access: Topics by E-print Network

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

    Websites Summary: studi diTrieste 12;Access E' un programma di gestione di database (DBMS) Access offre: un supporto;Aprire Access Appare una finestra di dialogo Microsoft...

  4. Characterization of liquids derived from laboratory coking of decant oil and co-coking of Pittsburgh seam bituminous coal with decant oil

    SciTech Connect (OSTI)

    Omer Gul; Caroline Clifford; Leslie R. Rudnick; Harold H. Schobert [Pennsylvania State University, University Park, PA (United States)

    2009-05-15T23:59:59.000Z

    In this study, decant oil and a blend of Pittsburgh seam bituminous coal with decant oil were subjected to coking and co-coking in a laboratory-scale delayed coker. Higher yields of coke and gas were obtained from co-coking than from coking. Coal addition into the feedstock resulted in lighter overhead liquid. GC/MS analyses of gasoline, jet fuel, and diesel show that co-coking of coal/decant oil gave higher quantity aromatic components than that of coking of decant oil alone. Simulated distillation gas chromatography analyses of overhead liquids and GC/MS analyses of vacuum fractions show that when coal was reacted with a decant oil, the coal constituents contributed to the distillable liquids. To address the reproducibility of the liquid products, overhead liquid samples collected at the first, third, and fifth hours of experiments of 6 h duration were evaluated using simulated distillation gas chromatography and {sup 1}H and {sup 13}C NMR. NMR analyses of the liquid products showed that, even though there were slight changes in the {sup 1}H and {sup 13}C spectra, the standard deviation was low for the time-dependent samples. Simulated distillation gas chromatography showed that the yields of refinery boiling range materials (i.e., gasoline, jet fuel, diesel, and fuel oil cuts) were reproducible between runs. Fractionation of the overhead liquids into refinery boiling range materials (gasoline, jet fuel, diesel, fuel oil fractions) showed that the boiling range materials and chemical compositions of fractions were found to be reproducible. 54 refs., 17 tabs.

  5. Special Access Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-03-29T23:59:59.000Z

    This Order is for OFFICIAL USE ONLY and will not be distributed on the Directives' Portal. For distribution, please contact the Executive Secretary of the Special Access Program Oversight Committee at (202) 586-3345. Does not cancel other directives.

  6. Virginia Capital Access Program (Virginia)

    Broader source: Energy.gov [DOE]

    The Virginia Capital Access Program (CAP), in partnership with Virginia’s Small Business Financing Authority, provides access to capital for small businesses. Businesses must apply to...

  7. Capital Access Program (CAP) (Michigan)

    Broader source: Energy.gov [DOE]

    The Capital Access Program (CAP), utilizes public resources to generate private financing for small business in Michigan seeking access to capital. Funding from the Michigan Strategic Fund is...

  8. Skin thickness effects on in vivo LXRF

    SciTech Connect (OSTI)

    Preiss, I.L.; Washington, W. II [Rensselaer Polytechnic Inst., Troy, NY (United States)

    1995-12-31T23:59:59.000Z

    The analysis of lead concentration in bone utilizing LXRF can be adversely effected by overlying issue. A quantitative measure of the attenuation of the 10.5 keV Pb L a x-ray signal by skin and skin equivalent plastic has been conducted. Concentration ranges in plaster of Paris and goat bone from 7 to 90 ppm with attenuators of Lucite{reg_sign} and pig skin were examined. It is concluded that no quantitative or semi quantitative analysis can be achieved if overlying sue thickness exceeds 3 mm for Ph concentrations of less than 30 porn Ph in bone.

  9. Mapping crustal thickness using marine gravity data: Methods and uncertainties

    E-Print Network [OSTI]

    Müller, Dietmar

    of petroleum systems within passive margins. However, direct measurements of crustal thickness are sparse geophysical data, to estimate crustal thickness. We evaluated alternative gravity inversion methodol- ogies, but economic considerations make gravity modeling a more practical approach for mapping crustal thickness over

  10. Seamful ubiquity: Beyond seamless integration

    E-Print Network [OSTI]

    MacColl, I.; Chalmers, M.; Rogers, Y.; Smith, H.; Proc.; Ubicomp 2002 Workshop on Models and Concepts for Ubiquitous Computing [More Details

    MacColl,I. Chalmers,M. Rogers,Y. Smith,H. Proc. Ubicomp 2002 Workshop on Models and Concepts for Ubiquitous Computing

  11. Radioactive waste disposal in thick unsaturated zones

    SciTech Connect (OSTI)

    Winograd, I.J.

    1981-06-26T23:59:59.000Z

    Portions of the Great Basin are undergoing crustal extension and have unsaturated zones as much as 600 meters thick. These areas contain multiple natural barriers capable of isolating solidified toxic wastes from the biosphere for tens of thousands to perhaps hundreds of thousands of years. An example of the potential utilization of such arid zone environments for toxic waste isolation is the burial of transuranic radioactive wastes at relatively shallow depths (15 to 100 meters) in Sedan Crater, Yucca Flat, Nevada. The volume of this man-made crater is several times that of the projected volume of such wastes to the year 2000. Disposal in Sedan Crater could be accomplished at a savings on the order of $0.5 billion, in comparison with current schemes for burial of such wastes in mined repositories at depths of 600 to 900 meters, and with an apparently equal likelihood of waste isolation from the biosphere. 4 figures.

  12. Accessing HPSS at NERSC

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP Related LinksATHENA couldAboutClean WaterAccessing HPSS Accessing

  13. Ultrasonic thickness measuring and imaging system and method

    DOE Patents [OSTI]

    Bylenok, Paul J.; Patmos, William M.; Wagner, Thomas A.; Martin, Francis H.

    1992-08-04T23:59:59.000Z

    An ultrasonic thickness measuring and imaging system uses an ultrasonic fsed beam probe for measuring thickness of an object, such as a wall of a tube, a computer for controlling movement of the probe in a scanning pattern within the tube and processing an analog signal produced by the probe which is proportional to the tube wall thickness in the scanning pattern, and a line scan recorder for producing a record of the tube wall thicknesses measured by the probe in the scanning pattern. The probe is moved in the scanning pattern to sequentially scan circumferentially the interior tube wall at spaced apart adjacent axial locations. The computer processes the analog signal by converting it to a digital signal and then quantifies the digital signal into a multiplicity of thickness points with each falling in one of a plurality of thickness ranges corresponding to one of a plurality of shades of grey. From the multiplicity of quantified thickness points, a line scan recorder connected to the computer generates a pictorial map of tube wall thicknesses with each quantified thickness point thus being obtained from a minute area, e.g. 0.010 inch by 0.010 inch, of tube wall and representing one pixel of the pictorial map. In the pictorial map of tube wall thicknesses, the pixels represent different wall thicknesses having different shades of grey.

  14. Ultrasonic thickness measuring and imaging system and method

    DOE Patents [OSTI]

    Bylenok, Paul J. (Clifton Park, NY); Patmos, William M. (Schenectady, NY); Wagner, Thomas A. (Bronswick, NY); Martin, Francis H. (Melrose, NY)

    1992-01-01T23:59:59.000Z

    An ultrasonic thickness measuring and imaging system uses an ultrasonic fsed beam probe for measuring thickness of an object, such as a wall of a tube, a computer for controlling movement of the probe in a scanning pattern within the tube and processing an analog signal produced by the probe which is proportional to the tube wall thickness in the scanning pattern, and a line scan recorder for producing a record of the tube wall thicknesses measured by the probe in the scanning pattern. The probe is moved in the scanning pattern to sequentially scan circumferentially the interior tube wall at spaced apart adjacent axial locations. The computer processes the analog signal by converting it to a digital signal and then quantifies the digital signal into a multiplicity of thickness points with each falling in one of a plurality of thickness ranges corresponding to one of a plurality of shades of grey. From the multiplicity of quantified thickness points, a line scan recorder connected to the computer generates a pictorial map of tube wall thicknesses with each quantified thickness point thus being obtained from a minute area, e.g. 0.010 inch by 0.010 inch, of tube wall and representing one pixel of the pictorial map. In the pictorial map of tube wall thicknesses, the pixels represent different wall thicknesses having different shades of grey.

  15. Library Guide Access ... 3

    E-Print Network [OSTI]

    Steiner, Ullrich

    ____________________________ Library Guide 2014-2015 #12;Contents Access ... 3 Finding things ... 4-6 Layout and classification... 7 Floor plans ... 8-9 Borrowing things ... 10 Renewing and returning things;Sidney Sussex Library Guide 2014-2015 Welcome to the Richard Powell Library Tel: (01223) 338852 e

  16. Library Guide Access ... 3

    E-Print Network [OSTI]

    Steiner, Ullrich

    ____________________________ Library Guide 2012-2013 #12;Contents Access ... 3 Finding things ... 4-6 Layout and classification... 7 Floor plans ... 8-9 Borrowing things ... 10 Renewing and returning things;Sidney Sussex Library Guide 2012-2013 Welcome to the Richard Powell Library Tel: (01223) 338852 e

  17. Cladding Attachment Over Thick Exterior Insulating Sheathing

    SciTech Connect (OSTI)

    Baker, P.; Eng, P.; Lepage, R.

    2014-01-01T23:59:59.000Z

    The addition of insulation to the exterior of buildings is an effective means of increasing the thermal resistance of both wood framed walls as well as mass masonry wall assemblies. For thick layers of exterior insulation (levels greater than 1.5 inches), the use of wood furring strips attached through the insulation back to the structure has been used by many contractors and designers as a means to provide a convenient cladding attachment location (Straube and Smegal 2009, Pettit 2009, Joyce 2009, Ueno 2010). The research presented in this report is intended to help develop a better understanding of the system mechanics involved and the potential for environmental exposure induced movement between the furring strip and the framing. BSC sought to address the following research questions: 1. What are the relative roles of the mechanisms and the magnitudes of the force that influence the vertical displacement resistance of the system? 2. Can the capacity at a specified deflection be reliably calculated using mechanics based equations? 3. What are the impacts of environmental exposure on the vertical displacement of furring strips attached directly through insulation back to a wood structure?

  18. Accessibility-based transit planning

    E-Print Network [OSTI]

    Busby, Jeffrey R

    2004-01-01T23:59:59.000Z

    A method for evaluating transit planning proposals using accessibility metrics is advanced in this research. A transit-accessibility model is developed intended for use by in-house transit agency planning staff as a ...

  19. The Galactic thick and thin disks: differences in evolution

    E-Print Network [OSTI]

    T. V. Nykytyuk; T. V. Mishenina

    2006-05-26T23:59:59.000Z

    Recent observations demonstrate that the thin and thick disks of the Galaxy have different chemical abundance trends and evolution timescales. The relative abundances of $\\alpha$-elements in the thick Galactic disk are increased relative to the thin disk. Our goal is to investigate the cause of such differences in thick and thin disk abundances. We investigate the chemical evolution of the Galactic disk in the framework of the open two-zone model with gas inflow. The Galactic abundance trends for $\\alpha$-elements (Mg, Si, O) and Fe are predicted for the thin and thick Galactic disks. The star formation histories of the thin and thick disks must have been different and the gas infall must have been more intense during the thick disk evolution that the thin disk evolution.

  20. Effects of Volcanism, Crustal Thickness, and Large Scale Faulting...

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

    of Volcanism, Crustal Thickness, and Large Scale Faulting on the Development and Evolution of Geothermal Systems: Collaborative Project in Chile Effects of Volcanism, Crustal...

  1. Thickness dependent self limiting 1-D tin oxide nanowire arrays...

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

    dependent self limiting 1-D tin oxide nanowire arrays by nanosecond pulsed laser irradiation. Thickness dependent self limiting 1-D tin oxide nanowire arrays by nanosecond pulsed...

  2. ag thick film: Topics by E-print Network

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

    applied. Yagi, Kazuyuki 2006-01-01 23 In situ Simultaneous Measurement of Temperature and Thin Film Thickness with Ultrasonic Techniques Engineering Websites Summary: In situ...

  3. artery wall thickness: Topics by E-print Network

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

    (CCA-IMT) were measured using ultrasonography. Gait 22 LIFE CYCLE ASSESSMENT OF A HEMP CONCRETE WALL: IMPACT OF THICKNESS AND COATING. Physics Websites Summary: to reduce...

  4. Variable Crustal Thickness In The Western Great Basin- A Compilation...

    Open Energy Info (EERE)

    Crustal Thickness In The Western Great Basin- A Compilation Of Old And New Refraction Data Abstract Utilizing commercial mine blasts and local earthquakes, as well as a dense...

  5. Role-Based Access Controls

    E-Print Network [OSTI]

    Ferraiolo, David F

    2009-01-01T23:59:59.000Z

    While Mandatory Access Controls (MAC) are appropriate for multilevel secure military applications, Discretionary Access Controls (DAC) are often perceived as meeting the security processing needs of industry and civilian government. This paper argues that reliance on DAC as the principal method of access control is unfounded and inappropriate for many commercial and civilian government organizations. The paper describes a type of non-discretionary access control - role-based access control (RBAC) - that is more central to the secure processing needs of non-military systems then DAC.

  6. Access for All

    E-Print Network [OSTI]

    Stearns, Linda Lea Merenda

    2012-07-16T23:59:59.000Z

    ?s Algebra 1 final grades to examine correlation with the students? grade in Algebra. Each scatter plot contained a solid linear regression line and a dashed line, y = x. The data points with a square shape represent the scores of students who were Waived... classes in a central Texas school district to determine if there is fair and equitable access for all students. The paper contains two major components. The first is quantitative study of the four entrance requirements for 8th grade Algebra I Pre-AP at a...

  7. LANL access restrictions lifted

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

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

  8. Access to the ALS

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973 1 Introduction In theACME -ToggleAccess to the ALS Print

  9. Accessibility | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973 1 Introduction In theACME -ToggleAccess to the ALS

  10. PAVEMENT OVERLAY THICKNESS EVALUATION USING GROUND PENTRATING RADAR (GPR)

    E-Print Network [OSTI]

    Shan, Jie

    PAVEMENT OVERLAY THICKNESS EVALUATION USING GROUND PENTRATING RADAR (GPR) Dwayne Harris, M.Sc., PG University, West Lafayette, IN 47907 jshan@ecn.purdue.edu ABSTRACT Accurate knowledge of pavement thickness is important information to have both at a network and project level. This information aids in pavement

  11. M AERIAUXMAGNETIQUES POUR HYPERFREQUENCES THICK FERRITE FILMS BY CHEMICAL TRANSPORT

    E-Print Network [OSTI]

    Boyer, Edmond

    M AERIAUXMAGNETIQUES POUR HYPERFREQUENCES THICK FERRITE FILMS BY CHEMICAL TRANSPORT A. I. BRAGINSKI-Mn ferrite and ferrochrornite films by Chemical Transport Deposi- tion (CTD) [I, 21. This method properties obtained. CTD now appears to be a valuable tool in laboratory preparation of thick ferrite layers

  12. A model for variable thickness superconducting thin lms

    E-Print Network [OSTI]

    Chapman, Jon

    A model for variable thickness superconducting thin #12;lms S. J. Chapman #3; Mathematical for Applied Mathematics Virginia Tech Blacksburg VA 24061-0531, USA Abstract A model for superconductivity. When the #12;lm is of uniform thickness the model is identical to a model for superconducting cylinders

  13. Pennsylvania Capital Access Program (Pennsylvania)

    Broader source: Energy.gov [DOE]

    The Pennsylvania Capital Access Program provides loan guarantees for all businesses for the purchase of land, buildings, machinery, equipment and working capital through participating banks. The...

  14. Vehicle barrier with access delay

    DOE Patents [OSTI]

    Swahlan, David J; Wilke, Jason

    2013-09-03T23:59:59.000Z

    An access delay vehicle barrier for stopping unauthorized entry into secure areas by a vehicle ramming attack includes access delay features for preventing and/or delaying an adversary from defeating or compromising the barrier. A horizontally deployed barrier member can include an exterior steel casing, an interior steel reinforcing member and access delay members disposed within the casing and between the casing and the interior reinforcing member. Access delay members can include wooden structural lumber, concrete and/or polymeric members that in combination with the exterior casing and interior reinforcing member act cooperatively to impair an adversarial attach by thermal, mechanical and/or explosive tools.

  15. 6D thick branes from interacting scalar fields

    SciTech Connect (OSTI)

    Dzhunushaliev, Vladimir; Folomeev, Vladimir; Singleton, Douglas; Aguilar-Rudametkin, Sergio [Department of Physics and Microel. Engineering, Kyrgyz-Russian Slavic University, Bishkek, Kievskaya Str. 44, 720021 (Kyrgyzstan); Institute of Physics of NAS KR, 265 a, Chui str., Bishkek, 720071 (Kyrgyzstan); Physics Department, CSU Fresno, Fresno, California 93740-8031 (United States)

    2008-02-15T23:59:59.000Z

    A thick brane in six dimensions is constructed using two scalar fields. The field equations for 6D gravity plus the scalar fields are solved numerically. This thick brane solution shares some features with previously studied analytic solutions, but has the advantage that the energy-momentum tensor which forms the thick brane comes from the scalar fields rather than being put in by hand. Additionally the scalar fields which form the brane also provide a universal, nongravitational trapping mechanism for test fields of various spins.

  16. Apparatus and method for measuring the thickness of a coating

    DOE Patents [OSTI]

    Carlson, Nancy M. (Idaho Falls, ID); Johnson, John A. (Idaho Falls, ID); Tow, David M. (Idaho Falls, ID); Walter, John B (Idaho Falls, ID)

    2002-01-01T23:59:59.000Z

    An apparatus and method for measuring the thickness of a coating adhered to a substrate. An electromagnetic acoustic transducer is used to induce surface waves into the coating. The surface waves have a selected frequency and a fixed wavelength. Interpolation is used to determine the frequency of surface waves that propagate through the coating with the least attenuation. The phase velocity of the surface waves having this frequency is then calculated. The phase velocity is compared to known phase velocity/thickness tables to determine the thickness of the coating.

  17. THROUGH THICKNESS LASER JOINING OF CONTINUOUS GLASS FIBER FABRIC REINFORCEMENT

    E-Print Network [OSTI]

    Yao, Y. Lawrence

    THROUGH THICKNESS LASER JOINING OF CONTINUOUS GLASS FIBER FABRIC REINFORCEMENT Paper Number 405 Huade Tan, Gen Satoh, Y. Lawrence Yao Manufacturing Research Laboratory Department of Mechanical and propagation is a major failure mode in structural composite applications. Manufacturing induced fiber

  18. Coherent radar ice thickness measurements over the Greenland ice sheet

    E-Print Network [OSTI]

    Gogineni, S. Prasad; Tammana, Dilip; Braaten, David A.; Leuschen, C.; Legarsky, J.; Kanagaratnam, P.; Stiles, J.; Allen, C.; Jezek, K.; Akins, T.

    2001-12-27T23:59:59.000Z

    We developed two 150-MHz coherent radar depth sounders for ice thickness measurements over the Greenland ice sheet. We developed one of these using connectorized components and the other using radio frequency integrated circuits (RFICs). Both...

  19. Thru-thickness bending stress distribution at elevated temperatures

    E-Print Network [OSTI]

    Christian, Lee Conner

    2005-08-29T23:59:59.000Z

    the extreme fiber strains exceeded ten percent, which further adds to the increased risk of the flange plate cracking during fabrication. The highest residual stresses through the plate??s thickness occurred during cold bending. The residual stresses through...

  20. Reactor physics assessment of thick silicon carbide clad PWR fuels

    E-Print Network [OSTI]

    Bloore, David A. (David Allan)

    2013-01-01T23:59:59.000Z

    High temperature tolerance, chemical stability and low neutron affinity make silicon carbide (SiC) a potential fuel cladding material that may improve the economics and safety of light water reactors (LWRs). "Thick" SiC ...

  1. airway wall thickness: Topics by E-print Network

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

    18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 LIFE CYCLE ASSESSMENT OF A HEMP CONCRETE WALL: IMPACT OF THICKNESS AND COATING. Physics Websites Summary: to reduce...

  2. Querying Schemas With Access Restrictions

    E-Print Network [OSTI]

    Benedikt, Michael; Ley, Clemens

    2012-01-01T23:59:59.000Z

    We study verification of systems whose transitions consist of accesses to a Web-based data-source. An access is a lookup on a relation within a relational database, fixing values for a set of positions in the relation. For example, a transition can represent access to a Web form, where the user is restricted to filling in values for a particular set of fields. We look at verifying properties of a schema describing the possible accesses of such a system. We present a language where one can describe the properties of an access path, and also specify additional restrictions on accesses that are enforced by the schema. Our main property language, AccLTL, is based on a first-order extension of linear-time temporal logic, interpreting access paths as sequences of relational structures. We also present a lower-level automaton model, Aautomata, which AccLTL specifications can compile into. We show that AccLTL and A-automata can express static analysis problems related to "querying with limited access patterns" that h...

  3. Remote direct memory access

    DOE Patents [OSTI]

    Archer, Charles J.; Blocksome, Michael A.

    2012-12-11T23:59:59.000Z

    Methods, parallel computers, and computer program products are disclosed for remote direct memory access. Embodiments include transmitting, from an origin DMA engine on an origin compute node to a plurality target DMA engines on target compute nodes, a request to send message, the request to send message specifying a data to be transferred from the origin DMA engine to data storage on each target compute node; receiving, by each target DMA engine on each target compute node, the request to send message; preparing, by each target DMA engine, to store data according to the data storage reference and the data length, including assigning a base storage address for the data storage reference; sending, by one or more of the target DMA engines, an acknowledgment message acknowledging that all the target DMA engines are prepared to receive a data transmission from the origin DMA engine; receiving, by the origin DMA engine, the acknowledgement message from the one or more of the target DMA engines; and transferring, by the origin DMA engine, data to data storage on each of the target compute nodes according to the data storage reference using a single direct put operation.

  4. A quantum access network

    E-Print Network [OSTI]

    Bernd Fröhlich; James F. Dynes; Marco Lucamarini; Andrew W. Sharpe; Zhiliang Yuan; Andrew J. Shields

    2014-09-02T23:59:59.000Z

    The theoretically proven security of quantum key distribution (QKD) could revolutionise how information exchange is protected in the future. Several field tests of QKD have proven it to be a reliable technology for cryptographic key exchange and have demonstrated nodal networks of point-to-point links. However, so far no convincing answer has been given to the question of how to extend the scope of QKD beyond niche applications in dedicated high security networks. Here we show that adopting simple and cost-effective telecommunication technologies to form a quantum access network can greatly expand the number of users in quantum networks and therefore vastly broaden their appeal. We are able to demonstrate that a high-speed single-photon detector positioned at a network node can be shared between up to 64 users for exchanging secret keys with the node, thereby significantly reducing the hardware requirements for each user added to the network. This point-to-multipoint architecture removes one of the main obstacles restricting the widespread application of QKD. It presents a viable method for realising multi-user QKD networks with resource efficiency and brings QKD closer to becoming the first widespread technology based on quantum physics.

  5. Access Digital Library, Search, News and more

    E-Print Network [OSTI]

    Goodrich, Lisa V.

    [General] Access Digital Library, Search, News and more [Education] Access MyCourses content [Research] Access Digital Library, NCBI Blast and more [Personal] Access your portable bookmarks using My and 500 textbooks via the Digital Library, one click access to NCBI Blast sequence databases. [General

  6. Method and system for producing sputtered thin films with sub-angstrom thickness uniformity or custom thickness gradients

    DOE Patents [OSTI]

    Folta, James A. (2262 Hampton Rd., Livermore, CA 94550); Montcalm, Claude (14 Jami St., Livermore, CA 94550); Walton, Christopher (2927 Lorina St., #2, Berkeley, CA 94705-1852)

    2003-01-01T23:59:59.000Z

    A method and system for producing a thin film with highly uniform (or highly accurate custom graded) thickness on a flat or graded substrate (such as concave or convex optics), by sweeping the substrate across a vapor deposition source with controlled (and generally, time-varying) velocity. In preferred embodiments, the method includes the steps of measuring the source flux distribution (using a test piece that is held stationary while exposed to the source), calculating a set of predicted film thickness profiles, each film thickness profile assuming the measured flux distribution and a different one of a set of sweep velocity modulation recipes, and determining from the predicted film thickness profiles a sweep velocity modulation recipe which is adequate to achieve a predetermined thickness profile. Aspects of the invention include a practical method of accurately measuring source flux distribution, and a computer-implemented method employing a graphical user interface to facilitate convenient selection of an optimal or nearly optimal sweep velocity modulation recipe to achieve a desired thickness profile on a substrate. Preferably, the computer implements an algorithm in which many sweep velocity function parameters (for example, the speed at which each substrate spins about its center as it sweeps across the source) can be varied or set to zero.

  7. U-205: RSA Access Manager Session Replay Flaw Lets Remote Users Access the System

    Broader source: Energy.gov [DOE]

    A vulnerability was reported in RSA Access Manager. A remote user can gain access to the target system.

  8. access: Topics by E-print Network

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

    7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Web Accessibility Accessibility Biotechnology Websites Summary: Web Accessibility...

  9. accessibility: Topics by E-print Network

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

    7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Web Accessibility Accessibility Biotechnology Websites Summary: Web Accessibility...

  10. Dynamic, Flexible, and Optimistic Access Control

    E-Print Network [OSTI]

    Peisert, Sean; Bishop, Matt

    2013-01-01T23:59:59.000Z

    and N. Dulay. Rumpole: A Flexible Break-Glass Access ControlDynamic, Flexible, and Optimistic Access Control Seannor are they intended to be flexible enough to reduce access

  11. Data base for the analysis of compositional characteristics of coal seams and macerals. Final report. Part 2. A multivariate study of the interrelationships among selected variables of the organic fraction of samples of United States' coals

    SciTech Connect (OSTI)

    Gerencher, J.J. Jr.

    1983-01-01T23:59:59.000Z

    Multivariate statistical techniques have been applied to study interrelationships among 12 variables within a set of 277 coals representing whole-seam channel, column, and core samples obtained from each of the 6 coal provinces of the United States, and varying in rank from lignite through anthracite. The data are maintained in computerized data base at The Pennsylvania State University Coal Research Section. The variables selected are components of the elemental analysis (carbon, oxygen, organic sulfur, hydrogen, and nitrogen), selected components of the proximate analysis (volatile matter and moisture), calorific value, reflectance of vitrinite, and the relative proportions of the 3 maceral groups (total vitrinite, inertinite, and liptinite group macerals). Faactor analyses performed on the entire data set and on subsets separated on the basis of rank, geographic location, and by cluster analysis indicated that rank is the most important factor in determining the amount of variation of each data set. The rank-dependent variables for the entire data set are carbon, reflectance, oxygen, volatile matter, calorific value, and moisture. The maceral groups account for the next greatest source of variation. Organic sulfur is independent of the first 2 factors and is the third most important source of variation. Cluster analyses indicated that the most significant partitioning produces 4 groups which are differentiated primarily on the basis of rank, maceral composition, and organic sulfur content. Factor analyses of the individual groups provide insights into the coalification processes of these more homogeneous coal associations.

  12. Data base for the analysis of compositional characteristics of coal seams and macerals. Final report - Part 10. Variability in the inorganic content of United States' coals: a multivariate statistical study

    SciTech Connect (OSTI)

    Glick, D.C.; Davis, A.

    1984-07-01T23:59:59.000Z

    The multivariate statistical techniques of correlation coefficients, factor analysis, and cluster analysis, implemented by computer programs, can be used to process a large data set and produce a summary of relationships between variables and between samples. These techniques were used to find relationships for data on the inorganic constituents of US coals. Three hundred thirty-five whole-seam channel samples from six US coal provinces were analyzed for inorganic variables. After consideration of the attributes of data expressed on ash basis and whole-coal basis, it was decided to perform complete statistical analyses on both data sets. Thirty variables expressed on whole-coal basis and twenty-six variables expressed on ash basis were used. For each inorganic variable, a frequency distribution histogram and a set of summary statistics was produced. These were subdivided to reveal the manner in which concentrations of inorganic constituents vary between coal provinces and between coal regions. Data collected on 124 samples from three stratigraphic groups (Pottsville, Monongahela, Allegheny) in the Appalachian region were studied using analysis of variance to determine degree of variability between stratigraphic levels. Most variables showed differences in mean values between the three groups. 193 references, 71 figures, 54 tables.

  13. Florida Capital Access Program (Florida)

    Broader source: Energy.gov [DOE]

    The Florida Capital Access Program, run by the Florida Department of Economic Development, is a loan portfolio insurance program enabling lenders to make loans to credit-worthy small businesses. ...

  14. Access Business Systems | Argonne National Laboratory

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

    Business Systems Dash provides access to select Argonne business systems without VPN. Dash is a secure platform, based on Citrix, for accessing Argonne business systems. Dash is...

  15. Particle acceleration in thick parallel shocks with high compression ratio

    E-Print Network [OSTI]

    Joni J. P. Virtanen; Rami Vainio

    2005-06-06T23:59:59.000Z

    We report studies on first-order Fermi acceleration in parallel modified shock waves with a large scattering center compression ratio expected from turbulence transmission models. Using a Monte Carlo technique we have modeled particle acceleration in shocks with a velocity ranging from nonrelativistic to ultrarelativistic and a thickness extending from nearly steplike to very wide structures exceeding the particle diffusion length by orders of magnitude. The nonrelativistic diffusion approximation is found to be surprisingly accurate in predicting the spectral index of a thick shock with large compression ratio even in the cases involving relativistic shock speeds.

  16. Process for manufacture of thick film hydrogen sensors

    DOE Patents [OSTI]

    Perdieu, Louisa H. (Overland Park, KS)

    2000-09-09T23:59:59.000Z

    A thick film process for producing hydrogen sensors capable of sensing down to a one percent concentration of hydrogen in carrier gasses such as argon, nitrogen, and air. The sensor is also suitable to detect hydrogen gas while immersed in transformer oil. The sensor includes a palladium resistance network thick film printed on a substrate, a portion of which network is coated with a protective hydrogen barrier. The process utilizes a sequence of printing of the requisite materials on a non-conductive substrate with firing temperatures at each step which are less than or equal to the temperature at the previous step.

  17. Method and apparatus for thickness measurement using microwaves

    DOE Patents [OSTI]

    Woskov, Paul (Bedford, MA) [Bedford, MA; Lamar, David A. (West Richland, WA) [West Richland, WA

    2001-01-01T23:59:59.000Z

    The method for measuring the thickness of a material which transmits a detectable amount of microwave radiation includes irradiating the material with coherent microwave radiation tuned over a frequency range. Reflected microwave radiation is detected, the reflected radiation having maxima and minima over the frequency range as a result of coherent interference of microwaves reflected from reflecting surfaces of the material. The thickness of the material is determined from the period of the maxima and minima along with knowledge of the index of refraction of the material.

  18. Liquid film thickness measurement by two-line TDLAS

    SciTech Connect (OSTI)

    Yang, Huinan [School of Energy and Power Engineering, University of Shanghai for Science and Technology, 200093, Shanghai, China and IVG, University of Duisburg-Essen, 47057, Duisburg (Germany); Chen, Jun; Cai, Xiaoshu [School of Energy and Power Engineering, University of Shanghai for Science and Technology, 200093, Shanghai (China); Greszik, Daniel; Dreier, Thomas; Schulz, Christof [IVG, University of Duisburg-Essen, 47057, Duisburg (Germany)

    2014-04-11T23:59:59.000Z

    A fiber-based two-line tunable diode-laser absorption sensor with two near-infrared (NIR) distributed-feedback (DFB) diode lasers at ?1.4 ?m was used for non-intrusive time-resolved liquid water film thickness measurement. When probing the liquid film at two different wavelengths with significantly different absorption cross-sections, the additional signal losses due to surface fowling, reflection and beam steering can be eliminated. In this work, the evaporation process of a liquid film on transparent quartz plate was tracked and large fluctuations of film thickness were found at the end of the evaporation.

  19. The Museum Theorem: Thick Face-Paths and

    E-Print Network [OSTI]

    West, Douglas B.

    The Museum Theorem: Thick Face-Paths and Hamiltonian-Connectedness in Plane Graphs Xiaoyun Lu #12;Visiting a Museum The Problem: The entrance and exit of a museum are fixed. You insist on visiting room F. The pieces of what you skip should be somehow "small". #12;Visiting a Museum The Problem

  20. THE TURBULENCE POWER SPECTRUM IN OPTICALLY THICK INTERSTELLAR CLOUDS

    SciTech Connect (OSTI)

    Burkhart, Blakesley; Lazarian, A. [Astronomy Department, University of Wisconsin, Madison, 475 North Charter Street, WI 53711 (United States); Ossenkopf, V.; Stutzki, J. [Physikalisches Institut der Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Germany)

    2013-07-10T23:59:59.000Z

    The Fourier power spectrum is one of the most widely used statistical tools to analyze the nature of magnetohydrodynamic (MHD) turbulence in the interstellar medium. Lazarian and Pogosyan predicted that the spectral slope should saturate to -3 for an optically thick medium and many observations exist in support of their prediction. However, there have not been any numerical studies to date for testing these results. We analyze the spatial power spectrum of MHD simulations with a wide range of sonic and Alfvenic Mach numbers, which include radiative transfer effects of the {sup 13}CO transition. We numerically confirm the predictions of Lazarian and Pogosyan that the spectral slope of line intensity maps of an optically thick medium saturates to -3. Furthermore, for very optically thin supersonic CO gas, where the density or CO abundance values are too low to excite emission in all but the densest shock compressed gas, we find that the spectral slope is shallower than expected from the column density. Finally, we find that mixed optically thin/thick CO gas, which has average optical depths on the order of unity, shows mixed behavior: for super-Alfvenic turbulence, the integrated intensity power spectral slopes generally follow the same trend with sonic Mach number as the true column density power spectrum slopes. However, for sub-Alfvenic turbulence the spectral slopes are steeper with values near -3 which are similar to the very optically thick regime.

  1. Thick brane solutions supported by two spinor fields

    E-Print Network [OSTI]

    V. Dzhunushaliev; V. Folomeev

    2011-04-14T23:59:59.000Z

    Stationary thick brane solutions supported by two spinor fields are considered. Two spinor fields are used here to exclude the off-diagonal components of the energy-momentum tensor of the spinor fields. The trapping of a test scalar field on the brane is also considered.

  2. Sensing roller for in-process thickness measurement

    DOE Patents [OSTI]

    Novak, J.L.

    1996-07-16T23:59:59.000Z

    An apparatus and method are disclosed for processing materials by sensing roller, in which the sensing roller has a plurality of conductive rings (electrodes) separated by rings of dielectric material. Sensing capacitances or impedances between the electrodes provides information on thicknesses of the materials being processed, location of wires therein, and other like characteristics of the materials. 6 figs.

  3. Measurement of Paint Layer Thickness with Photothermal Infrared Radiometry

    E-Print Network [OSTI]

    Louis, Alfred K.

    - try [1, 2]. As input for remote control systems, thickness information has to be supplied in realtime. Data acquisition has to be perfomed in a non-contact man- ner. Not only non-destructive and remote a periodical heat source on, respectively within, the sample then we waste a lot of information if only the #12

  4. An analytic description of thick-wall bubbles

    SciTech Connect (OSTI)

    Hong, Jooyoo

    1992-08-01T23:59:59.000Z

    A new approximation scheme to the false-vacuum decay is suggested. In this scheme the bounce solutions can be obtained in an explicit and analytic way even for thick-wall bubbles. The result is compared with Coleman`s thin-wall description, which shows that is nicely comprises the result of the latter prescription. Some applications are also discussed.

  5. LBNL 59017 JArt 1 Improved Spatial Resolution in Thick, Fully-

    E-Print Network [OSTI]

    LBNL 59017 JArt 1 Improved Spatial Resolution in Thick, Fully- Depleted CCDs with Enhanced Red developed at Lawrence Berkeley National Laboratory (LBNL). Because they can be over-depleted, the LBNL measure an rms diffusion of 3.7 ± 0.2 m. Lateral charge diffusion in LBNL CCDs will meet the SNAP

  6. Abundances of metal-weak thick-disc candidates

    E-Print Network [OSTI]

    P. Bonifacio; M. Centurion; P. Molaro

    1999-06-03T23:59:59.000Z

    High resolution spectra of 5 candidate metal-weak thick-disc stars suggested by Beers & Sommer-Larsen (1995) are analyzed to determine their chemical abundances. The low abundance of all the objects has been confirmed with metallicity reaching [Fe/H]=-2.9. However, for three objects, the astrometric data from the Hipparcos catalogue suggests they are true halo members. The remaining two, for which proper-motion data are not available, may have disc-like kinematics. It is therefore clear that it is useful to address properties of putative metal-weak thick-disc stars only if they possess full kinematic data. For CS 22894-19 the abundance pattern similar to those of typical halo stars is found, suggesting that chemical composition is not a useful discriminant between thick-disc and halo stars. CS 29529-12 is found to be C enhanced with [C/Fe]=+1.0; other chemical peculiarities involve the s process elements: [Sr/Fe]=-0.65 and [Ba/Fe]=+0.62, leading to a high [Ba/Sr] considerably larger than what is found in more metal-rich carbon-rich stars, but similar to LP 706-7 and LP 625-44 discussed by Norris et al (1997a). Hipparcos data have been used to calculate the space velocities of 25 candidate metal-weak thick-disc stars, thus allowing us to identify 3 bona fide members, which support the existence of a metal-poor tail of the thick-disc, at variance with a claim to the contrary by Ryan & Lambert (1995).

  7. Identity, Credential, and Access Management (ICAM)

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2013-02-19T23:59:59.000Z

    To establish requirements and responsibilities for DOE identity, credential, and access management program.

  8. LOCH: Open Access Implementation Responsibility Matrix 

    E-Print Network [OSTI]

    Krzak, Anna

    2015-02-05T23:59:59.000Z

    Draft Responsibility Matrix for College of Medicine and Veterinary Medicine for REF Open Access requirements implementation.

  9. 2020 Vision The Trinity Access Programmes

    E-Print Network [OSTI]

    O'Mahony, Donal E.

    2020 Vision The Trinity Access Programmes Strategic Plan to 2020 #12;2020 VISION - THE TRINITY ACCESS PROGRAMMES STRATEGIC PLAN TO 20202020 VISION - THE TRINITY ACCESS PROGRAMMES STRATEGIC PLAN TO 2020 Trinity Access Programmes "Our vision for 2014 is of a university providing further leadership

  10. Decline in ice thickness from sub data 1 10/16/07 The decline in arctic sea-ice thickness: separating the spatial, annual, and1

    E-Print Network [OSTI]

    Percival, Don

    Decline in ice thickness from sub data 1 10/16/07 The decline in arctic sea-ice thickness/14/07 & 10/16/079 10 11 #12;Decline in ice thickness from sub data 2 10/16/07 Abstract11 Naval submarines have collected operational data of sea-ice draft (90% of thickness) in the12 Arctic Ocean since 1958

  11. Open Source in accessibility analyses Open Source in accessibility analyses

    E-Print Network [OSTI]

    Köbben, Barend

    petrol station accessibility in Germany by Stefan Neumeier Johann Heinrich von Thünen-Institut, Federal The paper relates two closely intertwined story lines. A socioeconomic one concentrating on street petrol- sibility of street petrol stations as one core service of general interest important for the overall

  12. Numerical simulations of welds of thick steel pieces of interest for the thermonuclear fusion ITER machine

    E-Print Network [OSTI]

    Carmignani, B

    2005-01-01T23:59:59.000Z

    Numerical simulations of welds of thick steel pieces of interest for the thermonuclear fusion ITER machine

  13. ARM: 1-minute Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm

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

    Sivaraman, Chitra; Flynn, Connor

    1-minute Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm

  14. ARM: 10-minute Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm

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

    Newsom, Rob; Goldsmith, John

    10-minute Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm

  15. California State University, Fullerton Human Resources Access Request Form

    E-Print Network [OSTI]

    de Lijser, Peter

    Resources Access Request Form ** CISO Signature Date Employee Name Date Date I certify that this access

  16. Supporting Information Late Paleocene fossils from the Cerrejn Formation, Colombia, are the earliest record of

    E-Print Network [OSTI]

    Lyons, S. Kathleen

    as subtidal deposits). These clastic beds overlie or underlie thick coal seams. The middle part of the type-upward trends in grain size are common. Coal seams have variable thickness in this part of the succession to cross-bedded sandstones (interpreted as coastal plains crossed by channels). Medium to thin coal seams

  17. Method for making thick and/or thin film

    DOE Patents [OSTI]

    Pham, Ai Quoc; Glass, Robert S.

    2004-11-02T23:59:59.000Z

    A method to make thick or thin films a very low cost. The method is generally similar to the conventional tape casting techniques while being more flexible and versatile. The invention involves preparing a slip (solution) of desired material and including solvents such as ethanol and an appropriate dispersant to prevent agglomeration. The slip is then sprayed on a substrate to be coated using an atomizer which spreads the slip in a fine mist. Upon hitting the substrate, the solvent evaporates, leaving a green tape containing the powder and other additives, whereafter the tape may be punctured, cut, and heated for the desired application. The tape thickness can vary from about 1 .mu.m upward.

  18. Terahertz inline wall thickness monitoring system for plastic pipe extrusion

    SciTech Connect (OSTI)

    Hauck, J., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Stich, D., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Heidemeyer, P., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Bastian, M., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Hochrein, T., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de [SKZ - German Plastics Center, Wuerzburg (Germany)

    2014-05-15T23:59:59.000Z

    Conventional and commercially available inline wall thickness monitoring systems for pipe extrusion are usually based on ultrasonic or x-ray technology. Disadvantages of ultrasonic systems are the usual need of water as a coupling media and the high damping in thick walled or foamed pipes. For x-ray systems special safety requirements have to be taken into account because of the ionizing radiation. The terahertz (THz) technology offers a novel approach to solve these problems. THz waves have many properties which are suitable for the non-destructive testing of plastics. The absorption of electrical isolators is typically very low and the radiation is non-ionizing in comparison to x-rays. Through the electromagnetic origin of the THz waves they can be used for contact free measurements. Foams show a much lower absorption in contrast to acoustic waves. The developed system uses THz pulses which are generated by stimulating photoconductive switches with femtosecond laser pulses. The time of flight of THz pulses can be determined with a resolution in the magnitude of several ten femtoseconds. Hence the thickness of an object like plastic pipes can be determined with a high accuracy by measuring the time delay between two reflections on materials interfaces e.g. at the pipe's inner and outer surface, similar to the ultrasonic technique. Knowing the refractive index of the sample the absolute layer thickness from the transit time difference can be calculated easily. This method in principle also allows the measurement of multilayer systems and the characterization of foamed pipes.

  19. Thick de Sitter brane solutions in higher dimensions

    SciTech Connect (OSTI)

    Dzhunushaliev, Vladimir [Arnold-Sommerfeld-Center for Theoretical Physics, Department fuer Physik, Ludwig-Maximilians-Universitaet, Theresienstr. 37, D-80333, Munich (Germany); Department of Physics and Microelectronic Engineering, Kyrgyz-Russian Slavic University, Bishkek, Kievskaya Str. 44, 720021, Kyrgyz Republic (Russian Federation); Folomeev, Vladimir [Institute of Physics of National Academy of Science Kyrgyz Republic, 265 a, Chui Street, Bishkek, 720071 (Kyrgyzstan); Minamitsuji, Masato [Arnold-Sommerfeld-Center for Theoretical Physics, Department fuer Physik, Ludwig-Maximilians-Universitaet, Theresienstr. 37, D-80333, Munich (Germany); Center for Quantum Spacetime, Sogang University, Shinsu-dong 1, Mapo-gu, 121-742 Seoul (Korea, Republic of)

    2009-01-15T23:59:59.000Z

    We present thick de Sitter brane solutions which are supported by two interacting phantom scalar fields in five-, six-, and seven-dimensional spacetime. It is shown that for all cases regular solutions with anti-de Sitter asymptotic (5D problem) and a flat asymptotic far from the brane (6D and 7D cases) exist. We also discuss the stability of our solutions.

  20. Turbine blade having a constant thickness airfoil skin

    DOE Patents [OSTI]

    Marra, John J

    2012-10-23T23:59:59.000Z

    A turbine blade is provided for a gas turbine comprising: a support structure comprising a base defining a root of the blade and a framework extending radially outwardly from the base, and an outer skin coupled to the support structure framework. The skin has a generally constant thickness along substantially the entire radial extent thereof. The framework and the skin define an airfoil of the blade.

  1. open access journal Public Health

    E-Print Network [OSTI]

    Oakley, Jeremy

    open access journal Journal of Public Health in AfricaeISSN 2038-9930 i www the Journal of Public Health in Africa is a peer-reviewed, electronic quarterly, that focuses on health issues in the African continent. The journal editors seek high quality original articles on public health related issues

  2. Accessibility

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP Related LinksATHENA couldAboutClean Water Innovations

  3. Accessibility

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms About Become agovEducationWelcome FinancialScience at

  4. Site Access Policy | Argonne National Laboratory

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

    Site Access Policy All visitors to Argonne require appropriate authorization before they are allowed on the Argonne site. For information regarding site access for a U.S. citizen...

  5. City of Boulder- Solar Access Ordinance

    Broader source: Energy.gov [DOE]

    The City of Boulder's solar access ordinance guarantees access, or "solar fences," to sunlight for homeowners and renters in the city. This is done by setting limits on the amount of permitted...

  6. Metropolitan Accessibility and Transportation Sustainability:Sustainability

    E-Print Network [OSTI]

    Papalambros, Panos

    Metropolitan Accessibility and Transportation Sustainability:Sustainability: Comparative Reduce (fulfillment of)Promote Sustainability: Meet needs of (fulfillment of) needs present Institute SMART Sustainable Mobility and Accessibility Research andSMART Sustainable Mobility

  7. Alexandria Digital Library Project Content Access Characterization

    E-Print Network [OSTI]

    Janée, Greg

    Alexandria Digital Library Project Content Access Characterization in Digital Libraries Greg Janée · James Frew · David Valentine University of California, Santa Barbara #12;Alexandria Digital Library environments e.g., GIS #12;Alexandria Digital Library Project Janée, Frew, Valentine · Content Access

  8. Argonne Site Access | Advanced Photon Source

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

    Argonne Site Access Argonne National Laboratory is a controlled-access facility. You will need a visitor's pass or a user badge to enter the Argonne campus. You must notify us of...

  9. Fast Access Data Acquisition System

    SciTech Connect (OSTI)

    Dr. Vladimir Katsman

    1998-03-17T23:59:59.000Z

    Our goal in this program is to develop Fast Access Data Acquisition System (FADAS) by combining the flexibility of Multilink's GaAs and InP electronics and electro-optics with an extremely high data rate for the efficient handling and transfer of collider experimental data. This novel solution is based on Multilink's and Los Alamos National Laboratory's (LANL) unique components and technologies for extremely fast data transfer, storage, and processing.

  10. Subject Access to Your Information 

    E-Print Network [OSTI]

    Tucker, Sandra

    2006-08-01T23:59:59.000Z

    Subject Access to Your Information Sandy Tucker Texas A&M University Libraries August 1, 2006 Second International Symposium on Transportation Technology Transfer Introduction You have packages ? books, pamphlets, files, electronic documents. You... have records of packages ? cards or an online database. Other? We?re talking about adding subject information to the records of packages. Specifically, we?ll talk about using a ?controlled vocabulary.? Controlled Vocabulary Using a fixed list...

  11. Lyman alpha Transfer in a thick, dusty, and static medium

    E-Print Network [OSTI]

    Sang-Hyeon Ahn; Hee-Won Lee; Hyung-Mok Lee

    2000-06-13T23:59:59.000Z

    We developed a Monte Carlo code that describes the resonant Lyman alpha line transfer in an optically thick, dusty, and static medium. The code was tested against the analytic formula derived by Neufeld (1990). We explain the line transfer mechanism for a wide range of line center optical depths by tracing histories of photons in the medium. We find that photons escape from the medium by a series of wing scatterings, during which polarization may develop. We applied our code to examine the amount of dust extinction around the Lyman alpha in primeval galaxies. Brief discussions on the astrophysical application of our work are presented.

  12. A comparison of thick film and thin film traffic stripes

    E-Print Network [OSTI]

    Keese, Charles J

    1952-01-01T23:59:59.000Z

    Striys. . . Pigmented Bitusmn Stripes . Asphalt %uilt-Upa Striye vith Pigmented Portland Cement Mortar Cover Course 38 . ~ 41 Thin Film Stripes Used for Comparison Results of Comparing Thick Film Stripes and Thin Film Paint Stripes . ~ ~ ~ ~ ~ 43... was aspbaltio oonorets. The pavement in Test Areas 2y 3p and 4 vas portland cesmnh ooncrete, Two test areas (3 and 4) vere located in such manner as to provide uninterrupted flow of traffic over tbs entire length of the test area. The other two test areas (1...

  13. Human Resources Security Access Matrix Function Training

    E-Print Network [OSTI]

    Wu, Shin-Tson

    June 2013 Human Resources Security Access Matrix Function Training Course Required Class Mode Training Course Prerequisite Security Access Form Required Contact for Additional Information Complete Electronic I-9 Forms REC001: I-9 /E-Verify Web Training OR Online OR None Electronic I-9 Security Access Form

  14. Revised Spring 2008 NIH Public Access Policy

    E-Print Network [OSTI]

    Revised Spring 2008 NIH Public Access Policy Notice Number: NOT-OD-08-033 - (See Notice NOT-OD-08-161 (Consolidated Appropriations Act, 2008), the NIH voluntary Public Access Policy (NOT-OD-05-022) is now mandatory shall implement the public access policy in a manner consistent with copyright law. Specifics 1. The NIH

  15. AGREEMENT FOR MOBILE TECHNOLOGY ACCESS AND ALLOWANCE

    E-Print Network [OSTI]

    Oregon, University of

    AGREEMENT FOR MOBILE TECHNOLOGY ACCESS AND ALLOWANCE My signature on the "Mobile Technology Access and conditions identified in the Access to Mobile Technology and the Payment Options for Mobile Technology policies [http://hr.uoregon.edu/policy/MobileTechnologyDevice.html]. 2. I understand that that I must

  16. Instructions for Accessing FedConnect Postings, June 30, 2009...

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

    Instructions for Accessing FedConnect Postings, June 30, 2009 Instructions for Accessing FedConnect Postings, June 30, 2009 Instructions for Accessing FedConnect Postings and...

  17. Acronyms A AAAP Accelerated Access Authorization Program ACREM...

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

    S S Secret SRD SecretRestricted Data SAACS Security Alarm and Access Control System SAP Special Access Program SAPOC Special Access Program Oversight Committee SC Office...

  18. The fragmentation of expanding shells II: Thickness matters

    E-Print Network [OSTI]

    Wunsch, Richard; Palous, Jan; Whitworth, Anthony P

    2010-01-01T23:59:59.000Z

    We study analytically the development of gravitational instability in an expanding shell having finite thickness. We consider three models for the radial density profile of the shell: (i) an analytic uniform-density model, (ii) a semi-analytic model obtained by numerical solution of the hydrostatic equilibrium equation, and (iii) a 3D hydrodynamic simulation. We show that all three profiles are in close agreement, and this allows us to use the first model to describe fragments in the radial direction of the shell. We then use non-linear equations describing the time-evolution of a uniform oblate spheroid to derive the growth rates of shell fragments having different sizes. This yields a dispersion relation which depends on the shell thickness, and hence on the pressure confining the shell. We compare this dispersion relation with the dispersion relation obtained using the standard thin-shell analysis, and show that, if the confining pressure is low, only large fragments are unstable. On the other hand, if the...

  19. Oscillations of Thick Accretion Discs Around Black Holes - II

    E-Print Network [OSTI]

    Eduardo Rubio-Herrera; William H. Lee

    2005-05-21T23:59:59.000Z

    We present a numerical study of the global modes of oscillation of thick accretion discs around black holes. We have previously studied the case of constant distributions of specific angular momentum. In this second paper, we investigate (i) how the size of the disc affects the oscillation eigenfrequencies, and (ii) the effect of power-law distributions of angular momentum on the oscillations. In particular, we compare the oscillations of the disc with the epicyclic eigenfrequencies of a test particle with different angular momentum distributions orbiting around the central object. We find that there is a frequency shift away from the epicyclic eigenfrequency of the test particle to lower values as the size of the tori is increased. We have also studied the response of a thick accretion disc to a localized external perturbation using non constant specific angular momentum distributions within the disc. We find that in this case it is also possible (as reported previously for constant angular momentum distributions) to efficiently excite internal modes of oscillation. In fact we show here that the local perturbations excite global oscillations (acoustic p modes) closely related to the epicyclic oscillations of test particles. Our results are particularly relevant in the context of low mass X-ray binaries and microquasars, and the high frequency Quasi-Periodic Oscillations (QPOs) observed in them. Our computations make use of a Smooth Particle Hydrodynamics (SPH) code in azimuthal symmetry, and use a gravitational potential that mimics the effects of strong gravity.

  20. Oil shale ash-layer thickness and char combustion kinetics

    SciTech Connect (OSTI)

    Aldis, D.F.; Singleton, M.F.; Watkins, B.E.; Thorsness, C.B.; Cena, R.J.

    1992-04-15T23:59:59.000Z

    A Hot-Recycled-Solids (HRS) oil shale retort is being studied at Lawrence Livermore National Laboratory. In the HRS process, raw shale is heated by mixing it with burnt retorted shale. Retorted shale is oil shale which has been heated in an oxygen deficient atmosphere to pyrolyze organic carbon, as kerogen into oil, gas, and a nonvolatile carbon rich residue, char. In the HRS retort process, the char in the spent shale is subsequently exposed to an oxygen environment. Some of the char, starting on the outer surface of the shale particle, is burned, liberating heat. In the HRS retort, the endothermic pyrolysis step is supported by heat from the exothermic char combustion step. The rate of char combustion is controlled by three resistances; the resistance of oxygen mass transfer through the gas film surrounding the solid particle, resistance to mass transfer through a ash layer which forms on the outside of the solid particles as the char is oxidized and the resistance due to the intrinsic chemical reaction rate of char and oxygen. In order to estimate the rate of combustion of the char in a typical oil shale particle, each of these resistances must be accurately estimated. We begin by modeling the influence of ash layer thickness on the over all combustion rate of oil shale char. We then present our experimental measurements of the ash layer thickness of oil shale which has been processed in the HRS retort.

  1. Administrative Access Policy Exception Process & Request Form Administrative Access Policy Exception Process

    E-Print Network [OSTI]

    Arnold, Jonathan

    Administrative Access Policy ­ Exception Process & Request Form (Page 1) Administrative Access Policy ­ Exception Process Administrative Access Policy Overview According to the Franklin College Administrative Access Policy , all IT devices with a UGA control number will be setup with user

  2. Certain basic surgical principles of full-thickness free skin grafts in the dog

    E-Print Network [OSTI]

    Trevino, Gilberto Stephenson

    1959-01-01T23:59:59.000Z

    THICK GRAFT FULL THICKNESS GRAFT DERMIS ~i-/) HYPODERMIS 8 grafts 1n use todayo, . = - - Co HISTOHI QP SKIE GBAPTINQ ?' Hux earliest efforts to utilize skin for the reparation of integu- mentary defects vere undertalaen centuries ago...

  3. Subject Access to Your Information

    E-Print Network [OSTI]

    Tucker, Sandra

    2006-08-01T23:59:59.000Z

    Lists Transportation Research Thesaurus Your own list Use a Short List or a Long List of Terms? If you have a small collection, a short list of terms is appropriate. If you have a large collection, a longer list of more specific terms..., such as the Transportation Research Thesaurus, may be helpful. Longer list will help describe your packages in more specific ways. Subject Access to Other Kinds of Information People ? Expertise Groups of People Projects Equipment, Facilities Use the same set of subject...

  4. Laboratory Access | Sample Preparation Laboratories

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

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

  5. Remote Access | The Ames Laboratory

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Technical s o Freiberge s 3 c/) ReleaseRemote Access Ames Laboratory

  6. Bilayer thickness effects on nanoindentation behavior of Ag/Ni multilayers

    E-Print Network [OSTI]

    Hong, Soon Hyung

    by nanoindentation hardness and creep tests. The hardness increased with decreasing bilayer thickness, although of nanoindentation creep tests on Ag/Ni nanomultilayers with various bilayer thicknesses. Multilayered Ag/Ni films thickness. A nanoindentation creep test was used to study the creep behavior of nano- scale multilayers

  7. Ultrasonic thickness sampling plan for the depleted uranium hexafluoride program

    SciTech Connect (OSTI)

    Lyon, B.F.; Lykins, M.L.

    1996-07-01T23:59:59.000Z

    The United States Department of Energy (DOE) currently manages depleted uranium hexafluoride that is stored in approximately 50,000 carbon steel cylinders located at three DOE sites. The disposition of any particular cylinder for storage, handling, and transfer is based on the condition of the cylinder, where condition is ultimately reflected by the minimum wall thickness of a cylinder. Currently, the wall thickness of a cylinder may be measured using either a hand-held ultrasonic transducers or an automated scanner. At the Portsmouth site, the cylinder program is currently committed to a sampling plan that requires sampling 10% of the cylinders moved during the cylinder relocation efforts. The purpose of this report is to present a statistically-based sampling plan to be considered for use within the three site cylinder management program. This plan is designed to meet the following objectives: (1) allow determination of the current condition of the cylinder populations within the accuracy and confidence specified by cylinder program management, and (2) be sufficient for the models to be used for modeling purposes. The first objective does not require modeling in the sense of making assumptions about the corrosion process for the populations involved. By avoiding such additional assumptions, this may result in stronger statements to be made about the populations in question. Assumptions must be made regarding corrosion of the cylinders through time. The second objective depends on the particular model used. In this report, two basic methods are used in determining sample sizes. The sample sizes are intended to be conservative because it may be that other models are developed for use within the Program.

  8. EHL OIL FILM THICKNESS UNDER ROLLING-SLIDING CONTACT 2 W

    E-Print Network [OSTI]

    D. M. Nuruzzaman; M. A. A. Sheikh

    Oil film Abstract: The Elastohydrodynamic lubrication (EHL) minimum oil film thickness is theoretically investigated under rolling with sliding contact. The effects of contact pressure, rolling speed and slip ratio on the EHL minimum oil film thickness are calculated numerically. It is found that for a range of contact pressure from 0.5 to 3.5 GPa, the minimum oil film thickness gradually decreases with the increase in contact pressure. As the rolling speed increases from 3500 to 4500 rpm, oil film thickness is increased. It is also found that the oil film thickness is not much influenced by the slip ratio. 1

  9. Analyzing the thickness of a TEM sample using EELSAnalyzing the thickness of a TEM sample using EELS and integration techniquesand integration techniques

    E-Print Network [OSTI]

    Petta, Jason

    EELS and integration techniquesand integration techniques Antonio Buddington Imaging and Analysis film sample? Analyzing the thickness of a TEM sample using EELS and integration techniques #12;Method Analyzing the thickness of a TEM sample using EELS and integration techniques Specimen examined under

  10. Method and system using power modulation and velocity modulation producing sputtered thin films with sub-angstrom thickness uniformity or custom thickness gradients

    DOE Patents [OSTI]

    Montcalm, Claude (Livermore, CA); Folta, James Allen (Livermore, CA); Walton, Christopher Charles (Berkeley, CA)

    2003-12-23T23:59:59.000Z

    A method and system for determining a source flux modulation recipe for achieving a selected thickness profile of a film to be deposited (e.g., with highly uniform or highly accurate custom graded thickness) over a flat or curved substrate (such as concave or convex optics) by exposing the substrate to a vapor deposition source operated with time-varying flux distribution as a function of time. Preferably, the source is operated with time-varying power applied thereto during each sweep of the substrate to achieve the time-varying flux distribution as a function of time. Preferably, the method includes the steps of measuring the source flux distribution (using a test piece held stationary while exposed to the source with the source operated at each of a number of different applied power levels), calculating a set of predicted film thickness profiles, each film thickness profile assuming the measured flux distribution and a different one of a set of source flux modulation recipes, and determining from the predicted film thickness profiles a source flux modulation recipe which is adequate to achieve a predetermined thickness profile. Aspects of the invention include a computer-implemented method employing a graphical user interface to facilitate convenient selection of an optimal or nearly optimal source flux modulation recipe to achieve a desired thickness profile on a substrate. The method enables precise modulation of the deposition flux to which a substrate is exposed to provide a desired coating thickness distribution.

  11. T-606: Sun Java System Access Manager Lets Remote Users Partially Modify Data and Remote Authenticated Users Partially Access Data

    Broader source: Energy.gov [DOE]

    Sun Java System Access Manager Lets Remote Users Partially Modify Data and Remote Authenticated Users Partially Access Data.

  12. Accessing graphic information: Challenges of tomorrow

    SciTech Connect (OSTI)

    Frazer, G. Jr. [Power System Engineering, Inc., Madison, WI (United States). AM/FM Service Div.

    1995-12-31T23:59:59.000Z

    During the justification process of AM/FM projects, utilities seek to find as many benefits as possible using AM/FM technology. In many cases the ultimate benefit of simply providing users the ability to access the digital information is overlooked. This paper outlines why access may be overlooked, why providing access is important and what kind of tool is needed in the long term.

  13. SLAC All Access: Laser Labs

    SciTech Connect (OSTI)

    Minitti, Mike; Woods Mike

    2013-03-01T23:59:59.000Z

    From supermarket checkouts to video game consoles, lasers are ubiquitous in our lives. Here at SLAC, high-power lasers are critical to the cutting-edge research conducted at the laboratory. But, despite what you might imagine, SLAC's research lasers bear little resemblance to the blasters and phasers of science fiction. In this edition of All Access we put on our safety goggles for a peek at what goes on inside some of SLAC's many laser labs. LCLS staff scientist Mike Minitti and SLAC laser safety officer Mike Woods detail how these lasers are used to study the behavior of subatomic particles, broaden our understanding of cosmic rays and even unlock the mysteries of photosynthesis.

  14. SLAC All Access: Laser Labs

    ScienceCinema (OSTI)

    Minitti, Mike; Woods Mike

    2014-06-03T23:59:59.000Z

    From supermarket checkouts to video game consoles, lasers are ubiquitous in our lives. Here at SLAC, high-power lasers are critical to the cutting-edge research conducted at the laboratory. But, despite what you might imagine, SLAC's research lasers bear little resemblance to the blasters and phasers of science fiction. In this edition of All Access we put on our safety goggles for a peek at what goes on inside some of SLAC's many laser labs. LCLS staff scientist Mike Minitti and SLAC laser safety officer Mike Woods detail how these lasers are used to study the behavior of subatomic particles, broaden our understanding of cosmic rays and even unlock the mysteries of photosynthesis.

  15. Characterizing Open Access Publishing at Your Institution 

    E-Print Network [OSTI]

    Hubbard, David E.; Li, Yu

    2014-11-03T23:59:59.000Z

    Medical Library, 2008) Open Access (OA) “… digital, online, free of charge, and free of most copyright and licensing restrictions.” (Suber, 2012, p. 4) “Flavors” of Open Access Gold: provide immediate open access, peer reviewed; authors retain copyright...://becker.wustl.edu/services/scholarly/whatis.html. Ali, A., Shah, T. A., & Mirza, I. Z. (2011). Open Access Research Output of the University of Kashmir. Trends in Information Management, 7(2), 237-243. Amos, K., Mower, A., James, M. A., Weber, A., Yaffe, J., & Youngkin, M. (2012). Exploring...

  16. International Electricity Trade - Open Access | Department of...

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

    DOE has consistently expressed its policy that international electricity trade should be subject to the same principles of comparable open access and non-discrimination that apply...

  17. The Ohio Capital Access Program (OCAP) (Ohio)

    Broader source: Energy.gov [DOE]

    The Ohio Capital Access Program (OCAP) encourages state depository financial institutions to make loans to for-profit or nonprofit small businesses that are having difficulty obtaining business...

  18. UH Parking Access & Mid-Pacific Institute

    E-Print Network [OSTI]

    Pacific Ocean Science & Technology Kuykendall Annex Information Technology Center Krauss Hall Holmes HallStairs Pond UH Parking Access & Mid-Pacific Institute Exit Dole Street Offices Multipurpose

  19. ACCESS 2010 Level 1 | Department of Energy

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

    and modify new databases. Course Goals: Identify the basic components of an Access database. Build the structure of a database. Manage data in tables. Query a database. Design...

  20. Access Control for SAR Systems Stephen Quirolgico

    E-Print Network [OSTI]

    Access Control for SAR Systems Stephen Quirolgico Vincent Hu Tom Karygiannis NIST IR 7815 #12;NIST Systems Stephen Quirolgico Vincent Hu Tom Karygiannis Computer Security Division Information Technology

  1. Adjudicative Guidelines for Determining Eligibility for Access...

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

    consultants, contractors, employees of contractors, licensees, certificate holders or grantees and their employees and other individuals who require access to classified...

  2. Academic Libraries and Open Access: Policies, Services and Resources for Increasing Access to Scholarship

    E-Print Network [OSTI]

    Rosenblum, Brian

    2010-07-06T23:59:59.000Z

    This presentation will focus on emerging roles for academic libraries in supporting access to scholarship through open access policies and practices. The University of Kansas recently became the first public university in ...

  3. Cladding Attachment Over Thick Exterior Insulating Sheathing (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-11-01T23:59:59.000Z

    The addition of insulation to the exterior of buildings is an effective means of increasing the thermal resistance of wood-framed walls and mass masonry wall assemblies. The location of the insulation on the exterior of the structure has many direct benefits, including better effective R-value from reduced thermal bridging, better condensation resistance, reduced thermal stress on the structure, as well as other commonly associated improvements such as increased airtightness and improved water management. For thick layers of exterior insulation (more than 1.5 in.), the use of wood furring strips attached through the insulation back to the structure has been used by many contractors and designers as a means to provide a convenient cladding attachment location. Although the approach has proven effective, there is significant resistance to its widespread implementation due to a lack of research and understanding of the mechanisms involved in the development of the vertical displacement resistance capacity. In addition, the long-term in-service performance of the system has been questioned due to potential creep effects of the assembly under the sustained dead load of the cladding and effects of varying environmental conditions. In addition, the current International Building Code (IBC) and International Residential Code (IRC) do not have a provision that specifically allows this assembly.

  4. Lithium in very metal poor thick disk stars

    E-Print Network [OSTI]

    P. Molaro; P. Bonifacio; L. Pasquini

    1997-09-25T23:59:59.000Z

    A search for lithium is performed on seven metal poor dwarfs with metallicities ranging from [Fe/H]=-1.5 down to [Fe/H]=-3.0 but showing disk-like kinematics. These stars belong to the metal poor tail of the Galactic thick disk and they may be also the result of an accretion event (Beers and Sommer-Larsen 1995). The Li 6707.8 A line is present in all the seven dwarfs. The weighted average of the Li abundance for the stars is A(Li)=2.20 (+/-0.06) and is consistent within the errors with the plateau Li abundance of A(Li)=2.24(+/- 0.012) found in genuine halo stars in the same range of metallicities (Bonifacio and Molaro 1997). One of the stars, CS 22182-24, shows somewhat lower Li abundance (A(Li)=1.6(+/-0.40)) and is a candidate to being a Li-poor star. Whether this group of stars belongs to the oldest stars in the disk or to the old population of an external galaxy accreted by the Milky Way, the present observations provide support to the universality of a pre-Galactic Li abundance as is observed in the Galactic halo stars.

  5. Rotary union for use with ultrasonic thickness measuring probe

    DOE Patents [OSTI]

    Nachbar, H.D.

    1992-09-15T23:59:59.000Z

    A rotary union for rotatably supporting an ultrasonic probe operable to nondestructively measure the thickness of steam generator tubes to determine the amount of corrosion experienced by the tubes includes a stationary body having a bore therethrough and an outlet drain, and a fitting rotatably mounted within the upper end of the body. The fitting has a bore aligned with the bore of the body. An electrical cable positioned within a water supply tube in an annular arrangement passes through the bore of the body and the bore of the fitting. This annular arrangement, in turn, is positioned within a connector element which extends outwardly from the fitting bore and is connected to the ultrasonic probe. An elastomeric lower bushing seals the annular arrangement to the lower end of the rotary union body and an elastomeric upper bushing seals the connector element to the fitting to permit the connector element and the ultrasonic probe connected thereto to rotate with the fitting relative to the body. The lower and upper bushings permit water to be passed through the annular arrangement and into the ultrasonic probe and thereafter discharged between the annular arrangement and the connector element to the outlet drain of the rotary union body. 5 figs.

  6. Assessment of Nuclear Fuels using Radiographic Thickness Measurement Method

    SciTech Connect (OSTI)

    Muhammad Abir; Fahima Islam; Hyoung Koo Lee; Daniel Wachs

    2014-11-01T23:59:59.000Z

    The Convert branch of the National Nuclear Security Administration (NNSA) Global Threat Reduction Initiative (GTRI) focuses on the development of high uranium density fuels for research and test reactors for nonproliferation. This fuel is aimed to convert low density high enriched uranium (HEU) based fuel to high density low enriched uranium (LEU) based fuel for high performance research reactors (HPRR). There are five U.S. reactors that fall under the HPRR category, including: the Massachusetts Institute of Technology Reactor (MITR), the National Bureau of Standards Reactor (NBSR), the Missouri University Research Reactor (UMRR), the Advanced Test Reactor (ATR), and the High Flux Isotope Reactor (HFIR). U-Mo alloy fuel phase in the form of either monolithic or dispersion foil type fuels, such as ATR Full-size In center flux trap Position (AFIP) and Reduced Enrichment for Research and Test Reactor (RERTR), are being designed for this purpose. The fabrication process1 of RERTR is susceptible to introducing a variety of fuel defects. A dependable quality control method is required during fabrication of RERTR miniplates to maintain the allowable design tolerances, therefore evaluating and analytically verifying the fabricated miniplates for maintaining quality standards as well as safety. The purpose of this work is to analyze the thickness of the fabricated RERTR-12 miniplates using non-destructive technique to meet the fuel plate specification for RERTR fuel to be used in the ATR.

  7. Properties of micrometer-thick plasma-polymerized tetrafluoroethylene films

    SciTech Connect (OSTI)

    Butler, M.A.; Buss, R.J.; Galuska, A. (Sandia National Laboratories, Albuquerque, New Mexico (USA))

    1991-08-15T23:59:59.000Z

    Several physical properties of thin plasma-polymerized films have been measured using a new fiber-optic-based technique. Films of plasma-polymerized tetrafluoroethylene (PPTFE) deposited on the end of an optical fiber form an optical cavity, the reflectivity of which is very sensitive to the film thickness. The fiber is used as an {ital in} {ital situ} monitor of the deposition rate in the plasma and, after removal from the plasma, the mechanical properties of the film can be measured. With this measurement technique the thermal expansion of the film normal to its surface as well as the swelling of the film when exposed to an array of organic solvents have been determined. A significantly smaller thermal-expansion coefficient and larger degree of swelling are observed relative to bulk PTFE. X-ray photoelectron spectroscopy measurements show that the fluorocarbon chains are highly branched and have a fluorine-to-carbon ratio of 1.45. These results suggest that the plasma-polymerized films are not crystalline and are heavily cross linked.

  8. DEVELOPMENT OF A 3D GRID, FRACTURE AND PROPERTY MODELS FOR THE UPPER FREEPORT COAL AND OVERBURDEN USING 3D

    E-Print Network [OSTI]

    Wilson, Thomas H.

    in unminable coal seams. The pilot test is being conducted by CONSOL Energy Inc. Several site characterization of the Upper Freeport coal seam in southeastern Marshall Co. The site lies within a1km2 area that is outlined dimension. Grid cell thickness in the Pittsburgh and Upper Freeport coal seams was set at 8 feet and 5 feet

  9. Web Accessibility Office of Diversity and Inclusion

    E-Print Network [OSTI]

    Jones, Michelle

    Web Accessibility Office of Diversity and Inclusion Applies to: Any website conducting university of the art digital and web based information delivery of information is increasingly central in carrying out constituencies. This policy establishes minimum standards for the accessibility of web based information

  10. AN ACCESS CONTROL SYSTEM FOR SVG DOCUMENTS

    E-Print Network [OSTI]

    Samarati, Pierangela

    - ever, XML-based graphics formats such as the Scalable Vector Graphics (SVG) standard are becoming by means of new XML-based standards such as the World Wide Web Consortium's Scalable Vector Graphics (SVG controlling access to graphic information on the Internet. Keywords: Access Control, SVG Documents, Vector

  11. A Hardware Approach for Trusted Access and

    E-Print Network [OSTI]

    Global is prohibited. IntroductIon In computer systems, access control models management in the database context, trying to ABStrAct ThischapteradvocatestheconvergencebetweenAccessControl(AC)models. The convergence is also expected in terms of control enforcement considering that both AC and DRM models must

  12. Interactive Database Access with Statistics and Graphics

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    DbAccess The Manual Interactive Database Access with Statistics and Graphics Version 2.1.1 D. M and graphical needs of NSTX Physicists. Flexible views and joins are possible, including options for complex SQL General Atomics (GA Plot Objects) adds extensive graphical and interactive capabilities (and documentation

  13. Usability and Accessibility in Consumer Health Informatics

    E-Print Network [OSTI]

    Shneiderman, Ben

    Usability and Accessibility in Consumer Health Informatics Current Trends and Future Challenges, for innovative eHealth systems to have true value and impact, they must first and foremost be usable challenges in the usability and accessibility of consumer health informatics will be described. Consumer

  14. National Radiobiology Archives Distributed Access user's manual

    SciTech Connect (OSTI)

    Watson, C.; Smith, S. (Pacific Northwest Lab., Richland, WA (United States)); Prather, J. (Linfield Coll., McMinnville, OR (United States))

    1991-11-01T23:59:59.000Z

    This User's Manual describes installation and use of the National Radiobiology Archives (NRA) Distributed Access package. The package consists of a distributed subset of information representative of the NRA databases and database access software which provide an introduction to the scope and style of the NRA Information Systems.

  15. University Library Fact Sheet Sconul Access

    E-Print Network [OSTI]

    Brierley, Andrew

    University Library Fact Sheet Sconul Access Opening Hours Please consult the library website for our current opening hours: http://www.st-andrews.ac.uk/library/ Library Cards To borrow books and access the Library you must bring your card with you to the library on each visit. Please notify

  16. Database Hints for Readex's AccessUN

    E-Print Network [OSTI]

    Stowell, Michael

    Database Hints for Readex's AccessUN Direct Link to Database: http://infoweb.newsbank.com/?db=UNAD Database Scope Readex's AccessUN database provides an index to United Nations documents from the six main Council, Secretariat and International Court of Justice. This database covers documents from 1946

  17. Locally Accessible Information and Distillation of Entanglement

    E-Print Network [OSTI]

    Sibasish Ghosh; Pramod Joag; Guruprasad Kar; Samir Kunkri; Anirban Roy

    2004-03-18T23:59:59.000Z

    A new type of complementary relation is found between locally accessible information and final average entanglement for given ensemble. It is also shown that in some well known distillation protocol, this complementary relation is optimally satisfied. We discuss the interesting trade-off between locally accessible information and distillable entanglement for some states.

  18. Foreign National Access to DOE Cyber Systems

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1999-11-01T23:59:59.000Z

    DOE N 205.16, dated 9-15-05, extends this Notice until 9-30-06, unless sooner rescinded. To ensure foreign national access to DOE cyber systems continues to advance DOE program objectives while enforcing information access restrictions.

  19. Thin-thick hydrogen target for nuclear physics

    SciTech Connect (OSTI)

    Gheller, J.-M.; Juster, F.-P.; Authelet, G. [CEA Saclay, Irfu/SACM, F-91191 Gif-Sur-Yvette cedex (France); Vinyar, I. [PELIN Limited Liability Company 27 A, Gzhatskaya Str, office 103 St. Petersbourg 195220 (Russian Federation); Relland, J. [CEA Saclay, Irfu/SIS, F-91191 Gif-Sur-Yvette cedex (France); Commeaux, C. [Institut de Physique Nucléaire, campus Universitaire-Bat 103, 91406 Orsay cedex (France)

    2014-01-29T23:59:59.000Z

    In spectroscopic studies of unstable nuclei, hydrogen targets are of key importance. The CHyMENE Project aims to provide to the nuclear physics community a thin and pure solid windowless hydrogen or deuterium target. CHyMENE project must respond to this request for the production of solid Hydrogen. The solid hydrogen target is produced in a continuous flow (1 cm/s) by an extrusion technique (developed with the PELIN laboratory) in a vacuum chamber. The shape of the target is determined by the design of the nozzle at the extrusion process. For the purpose, the choice is a rectangular shape with a width of 10 mm and a thickness in the range of 30-50 microns necessary for the physics objectives. The cryostat is equipped with a GM Cryocooler with sufficient power for the solidification of the hydrogen in the lower portion of the extruder. In the higher part of the cryostat, the hydrogen gas is first liquefied and partially solidified. It is then compressed at 100 bars in the cooled extruder before expulsion of the film through the nozzle at the center of the reaction vacuum chamber. After the previous step, the solid hydrogen ribbon falls by gravity into a dedicated chamber where it sublimes and the gas is pumped and evacuated in a exhaust line. This paper deals with the design of the cryostat with its equipment, with the sizing of the thermal bridge (Aluminum and copper), with the results regarding the contact resistance as well as with the vacuum computations of the reaction and recovery hydrogen gas chambers.

  20. Bedmap2: improved ice bed, surface and thickness datasets for Antarctica

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    Subglacial topography inferred from ice surface ter- rainSubglacial topography inferred from ice surface ter- rainsurface eleva- tion, ice thickness and subglacial topography

  1. Coating thickness measurement by XRF in vacuum strip steel metallizing plants

    SciTech Connect (OSTI)

    Wenzel, D. [Von Ardenne Anlagentechnik GmbH, Dresden (Germany); Esche, H.J.; Pilz, J. [Amtec AnalysenmeBtechnik GmbH, Leipzig (Germany)

    1994-12-31T23:59:59.000Z

    Devised for use in vacuum equipment of PVD strip steel coaters is a multichannel counting technique for the continuous XRF measurement of the coating thickness. This XRF coating thickness gage is used in a batch-type strip steel coater. It measures the thickness of single-side, double-side and alloy coatings (element contents included). The new XRF method operates without etalons. It is also possible to measure adjacent elements in the periodic law of chemical elements without difficulty. With only minor deviations from the nominal value the new XRF measuring system allows to keep the coating thickness practically constant.

  2. Bedmap2: improved ice bed, surface and thickness datasets for Antarctica

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    Antarctica (MOA) image map: Digital media, National Snow andmodel of Antarctica: Digital media, National Snow and IceThickness, 2009–2011: Digital media, NASA Distributed Active

  3. ARM: 10-minute TEMPORARY Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm

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

    Sivaraman, Chitra; Flynn, Connor

    10-minute TEMPORARY Raman Lidar: aerosol extinction profiles and aerosol optical thickness, from first Ferrare algorithm

  4. Nemesis: Preventing Authentication & Access Control Vulnerabilities in Web Applications

    E-Print Network [OSTI]

    Sabatini, David M.

    Nemesis: Preventing Authentication & Access Control Vulnerabilities in Web Applications Michael web applications. Authentication attacks occur when a web application authenticates users unsafely, granting access to web clients that lack the ap- propriate credentials. Access control attacks occur when

  5. Hybrid Access Control Mechanism in Two-Tier Femtocell Networks

    E-Print Network [OSTI]

    Mantravadi, Sirisha 1987-

    2012-08-21T23:59:59.000Z

    remains a challenge. Decentralized strategies such as femtocell access control have been identified as an effective means to mitigate cross-tier interference in two-tier networks. Femtocells can be configured to be either open access or closed access...

  6. ETSU College of Medicine Onity Door Access Authorization Form

    E-Print Network [OSTI]

    Karsai, Istvan

    ETSU College of Medicine Onity Door Access Authorization Form Please grant access to: 6 access. ____ ALL AREAS (ETSU Service Personnel Only) Medical School Research & Training, VA Bldg. #119-Mail: johnsodl@etsu.edu #12;

  7. A Dyslexic Perspective on e-Content Accessibility

    E-Print Network [OSTI]

    Brajnik, Giorgio

    an insight into the issues of web accessibility for users with Dyslexia (and/or other specific learning and accessibility issues of electronic educational content. Keywords: dyslexia, SLD, web accessibility, usability...................................................................................................2 2. Explaining Dyslexia

  8. ad libitum access: Topics by E-print Network

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

    Websites Summary: studi diTrieste 12;Access E' un programma di gestione di database (DBMS) Access offre: un supporto;Aprire Access Appare una finestra di dialogo Microsoft...

  9. Channel and wedge plasmon modes of metallic V-grooves with finite metal thickness

    E-Print Network [OSTI]

    Floreano, Dario

    Channel and wedge plasmon modes of metallic V-grooves with finite metal thickness José Dintinger thickness on the propagation characteristics of the channel plasmon polariton (CPP) and wedge plasmon is found to evolve into short range plasmon modes propagating along the groove walls, in contrast

  10. Density dependence of the symmetry energy from neutron skin thickness in finite nuclei

    SciTech Connect (OSTI)

    Vinas, X.; Centelles, M.; Roca-Maza, X.; Warda, M. [Departament d'Estructura i Conastituents de la Materia and Institut de Ciencies del Cosmos, Facultat de Fisica, Universitat de Barcelona, Marti i Franques 1, 08028, Barcelona (Spain); Instituto Nazionale di Fisica Nucleare, Sezione di Milano , Via Celoria 16, I-20133 Milano (Italy); Katedra Fizyki Teoretycznej, Uniwersytet Marii Curie-Skodowskiej ul. Radziszewskiego 10, 20-031 Lublin (Poland)

    2012-10-20T23:59:59.000Z

    The density dependence of the symmetry energy, characterized by the parameter L, is studied using information provided by the neutron skin thickness in finite nuclei. An estimate of L is obtained from experimental data of antiprotonic atoms. We also discuss the ability of parity violating electron scatering to obtain information about the neutron skin thickness in {sup 208}Pb.

  11. Friction of a slider on a granular layer: Nonmonotonic thickness dependence and effect of boundary conditions

    E-Print Network [OSTI]

    Kudrolli, Arshad

    Friction of a slider on a granular layer: Nonmonotonic thickness dependence and effect of boundary the effective friction encountered by a mass sliding on a granular layer as a function of bed thickness and boundary roughness conditions. The observed friction has minima for a small number of layers before

  12. FLUORESCENCE AND FIBER-OPTICS BASED REAL-TIME THICKNESS SENSOR FOR DYNAMIC LIQUID FILMS

    E-Print Network [OSTI]

    Narain, Amitabh

    /analyzed the incident reflected waves to identify and measure the total transit time of the sound wave (of known wave-speed1 FLUORESCENCE AND FIBER-OPTICS BASED REAL-TIME THICKNESS SENSOR FOR DYNAMIC LIQUID FILMS T. W. Ng/disadvantages of many known liquid film thickness sensing devices (viz. conductivity probes, reflectance based fiber

  13. Sea-ice thickness measurement based on the dispersion of ice swell

    E-Print Network [OSTI]

    -year pack ice, although other char- acteristics (Young's modulus, shear modulus, and Poisson coefficientSea-ice thickness measurement based on the dispersion of ice swell David Marsana) ISTerre, CNRS propagating in the Arctic sea ice cover is exploited in order to locally measure the ice thickness

  14. SAR Motion Products: Tools for Monitoring Changes in Sea Ice Mass Balance and Thickness Distribution

    E-Print Network [OSTI]

    Geiger, Cathleen

    decrease in a warming climate. For example, in a weakening ice pack, we could expect convergence storminess in the Arctic; (b) a seasonal ice pack of reduced thickness; and (c) large scale changes in driftSAR Motion Products: Tools for Monitoring Changes in Sea Ice Mass Balance and Thickness

  15. Evaluation of Arctic sea ice thickness simulated by Arctic Ocean Model Intercomparison Project models

    E-Print Network [OSTI]

    Zhang, Jinlun

    of fast ice formation and growth. Instead, the modeled fast ice is replaced with pack ice which driftsEvaluation of Arctic sea ice thickness simulated by Arctic Ocean Model Intercomparison Project with estimates of sea ice thickness derived from pan-Arctic satellite freeboard measurements (2004

  16. On the effective plate thickness of monolayer graphene from flexural wave propagation

    E-Print Network [OSTI]

    Lin, Xi

    On the effective plate thickness of monolayer graphene from flexural wave propagation Sung Youb Kim utilize classical molecular dynamics to study flexural, or transverse wave propagation in monolayer) mode of wave propagation in a thin plate with plate thickness of h ¼ 0:104 nm. Finally, we find

  17. Reactivity of a Thick BaO Film Supported on Pt(111): Adsorption...

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

    a Thick BaO Film Supported on Pt(111): Adsorption and Reaction of NO2, H2O and CO2. Reactivity of a Thick BaO Film Supported on Pt(111): Adsorption and Reaction of NO2, H2O and...

  18. Great Lakes Ice Thickness Data Rescue Primary Investigator: Raymond Assel -NOAA/GLERL (Emeritus)

    E-Print Network [OSTI]

    Great Lakes Ice Thickness Data Rescue Primary Investigator: Raymond Assel - NOAA/GLERL (Emeritus) Overview Ice cover is an important environmental factor affecting physical and biological processes in the coastal region of the Great Lakes. However, computerized ice thickness data along the shores of the Great

  19. MCM LTER METADATA FILE TITLE: Lake ice thickness in the McMurdo Dry Valleys

    E-Print Network [OSTI]

    Priscu, John C.

    MCM LTER METADATA FILE TITLE: Lake ice thickness in the McMurdo Dry Valleys ABSTRACT: Ice thickness was measured from the bottom of the ice cover to the piezometric water level and to the top of the ice cover-2360 achiuchiolo@montana.edu VARIABLES: Location Name, Location Code, Limno Run, Collection Date, z-water, z-ice, z

  20. 2009 ASME WIND ENERGY SYMPOSIUM Static and Fatigue Testing of Thick Adhesive Joints for

    E-Print Network [OSTI]

    1 2009 ASME WIND ENERGY SYMPOSIUM Static and Fatigue Testing of Thick Adhesive Joints for Wind as wind blade size has increased. Typical blade joints use paste adhesives several millimeters thick aircraft, which are also of relevance to wind blades in many instances. The strengths of lap-shear and many

  1. LIFE CYCLE ASSESSMENT OF A HEMP CONCRETE WALL: IMPACT OF THICKNESS AND COATING.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to reduce climate change as photosynthesis-mediated carbon sequestration and carbonation serve to reduce sequestration and carbonation. Moreover the increase in the wall's thermal resistance with wall thickness atmospheric carbon dioxide. A sensitivity analysis is performed on three criteria: wall thickness, renewal

  2. Ice Mass Balance Buoy: An Instrument to Measure and Attribute Changes in Ice Thickness

    E-Print Network [OSTI]

    Geiger, Cathleen

    Ice Mass Balance Buoy: An Instrument to Measure and Attribute Changes in Ice Thickness Jacqueline A the Ice Mass Balance buoy (IMB) in response to the need for monitoring changes in the thickness of the Arctic sea ice cover. The IMB is an autonomous, ice-based system. IMB buoys provide a time series of ice

  3. Polyimide-Based Processes for the Fabrication of Thick Electroplated Microstructures

    E-Print Network [OSTI]

    Polyimide-Based Processes for the Fabrication of Thick Electroplated Microstructures Mark G. Allen of polyimide as an electroplating mold for thick electroplated microstructures is discussed. Polyimide of the polyimide material can be performed in a conventional manner, and since the polyimide when cured

  4. High-resolution estimates of lithospheric thickness from Missouri to Massachusetts, USA

    E-Print Network [OSTI]

    van der Lee, Suzan

    -dimensional (3-D) model, NA00, of the S-velocity of the upper mantle beneath North America. The model differs. The seismic lithosphere is 180 km thick below Missouri and Illinois, 200 km thick below Indiana, Ohio by fitting the waveforms of broadband seismic S and surface waves recorded by the MOMA array and inverting

  5. Seismic evidence for a moderately thick lithosphere beneath the Siberian Platform

    E-Print Network [OSTI]

    Seismic evidence for a moderately thick lithosphere beneath the Siberian Platform Keith Priestley-wavespeed tomographic model for the upper mantle beneath the Siberian platform and surrounding region derived from lithosphere is $200 km thick beneath most of the Siberian platform but may extend to $250 km depth beneath

  6. Resource Limits and Conversion Efficiency with Implications for Climate Change

    E-Print Network [OSTI]

    Croft, Gregory Donald

    2009-01-01T23:59:59.000Z

    coal seam thickness or water production in oil fields. Theinclude carbon emissions and water usage. A graph showing ain Part II. The lack of water, environmental problems with

  7. Conjunctive Query Containment under Access Limitations

    E-Print Network [OSTI]

    Martinenghi, Davide

    2 both represent city names, and similarly the attributes named Artist represent artist names.1 to access r2. In turn, new tuples from r2 may provide new constants representing city names, that can

  8. Metadata Value Chain for Open Access Journals

    E-Print Network [OSTI]

    Mercer, Holly; Dyas-Correia, Sharon

    2011-01-01T23:59:59.000Z

    In this session, Holly Mercer presented a case for finding global solutions to improve the metadata that is available for journals, particularly small, independent open access journals. She discussed the scholarly communication lifecycle...

  9. COMMENTARY Open Access Effectively incorporating selected multimedia

    E-Print Network [OSTI]

    Hammerton, James

    COMMENTARY Open Access Effectively incorporating selected multimedia content into medical Schöbel5 , Markus Sellerer6 , Andreas Ziegler1 Abstract Until fairly recently, medical publications have significantly profit from advances in electronic publishing that permit the inclusion of multimedia content

  10. Random access wireless networks with controlled mobility

    E-Print Network [OSTI]

    Modiano, Eytan H.

    This paper considers wireless networks where messages arriving randomly (in time and space) are collected by a mobile receiver. The messages are transmitted to the mobile receiver according to a random access scheme and ...

  11. Practical API Protocol Checking with Access Permissions

    E-Print Network [OSTI]

    for a large Java standard API with our approach. We also specify several other Java APIs and identify standard APIs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.2 ProtocolPractical API Protocol Checking with Access Permissions Kevin Bierhoff Nels E. Beckman Jonathan

  12. Accessing MDS with IDL February 1993

    E-Print Network [OSTI]

    California at San Diego, University of

    Accessing MDS with IDL Reference Manual February 1993 Software Version: MDS 5.2 VAX/VMS Version 4 Equipment Corporation: CDD DECnet VAX DATATRIEVE DECUS VAXcluster DEC MicroVAX VAX Information Architecture

  13. JOBAID-ACCESSING AND MODIFYING TALENT PROFILE

    Broader source: Energy.gov [DOE]

    The purpose of this job aid is to guide users through the step-by-step process of accessing their talent profiles, adding information to their profiles, and editing existing talent profile...

  14. Metadata Value Chain for Open Access Journals 

    E-Print Network [OSTI]

    Mercer, Holly; Dyas-Correia, Sharon

    2011-01-01T23:59:59.000Z

    In this session, Holly Mercer presented a case for finding global solutions to improve the metadata that is available for journals, particularly small, independent open access journals. She discussed the scholarly ...

  15. Decision Analysis of Dynamic Spectrum Access Rules

    SciTech Connect (OSTI)

    Juan D. Deaton; Luiz A. DaSilva; Christian Wernz

    2011-12-01T23:59:59.000Z

    A current trend in spectrum regulation is to incorporate spectrum sharing through the design of spectrum access rules that support Dynamic Spectrum Access (DSA). This paper develops a decision-theoretic framework for regulators to assess the impacts of different decision rules on both primary and secondary operators. We analyze access rules based on sensing and exclusion areas, which in practice can be enforced through geolocation databases. Our results show that receiver-only sensing provides insufficient protection for primary and co-existing secondary users and overall low social welfare. On the other hand, using sensing information between the transmitter and receiver of a communication link, provides dramatic increases in system performance. The performance of using these link end points is relatively close to that of using many cooperative sensing nodes associated to the same access point and large link exclusion areas. These results are useful to regulators and network developers in understanding in developing rules for future DSA regulation.

  16. North Carolina Capital Access Program (North Carolina)

    Broader source: Energy.gov [DOE]

    The North Carolina Capital Access Program provides matching reserve funds for business loans that are beyond the traditional lending means of a lender’s usual standards. The average CAP loan is ...

  17. Radioactive hot cell access hole decontamination machine

    DOE Patents [OSTI]

    Simpson, William E. (Richland, WA)

    1982-01-01T23:59:59.000Z

    Radioactive hot cell access hole decontamination machine. A mobile housing has an opening large enough to encircle the access hole and has a shielding door, with a door opening and closing mechanism, for uncovering and covering the opening. The housing contains a shaft which has an apparatus for rotating the shaft and a device for independently translating the shaft from the housing through the opening and access hole into the hot cell chamber. A properly sized cylindrical pig containing wire brushes and cloth or other disks, with an arrangement for releasably attaching it to the end of the shaft, circumferentially cleans the access hole wall of radioactive contamination and thereafter detaches from the shaft to fall into the hot cell chamber.

  18. Adjudicative Guidelines for Determining Eligibility for Access...

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

    access to classified information take into account factors that could cause a conflict of interest and place a person in the position of having to choose between his or her...

  19. LOCH: Open Access Facilitator Job Description (DRAFT) 

    E-Print Network [OSTI]

    McMahon, Jacqueline

    2015-03-23T23:59:59.000Z

    DRAFT Job Description for an Open Access Facilitator job in the University of Edinburgh's College of Humanities and Social Sciences. This draft job description is being made available as part of the Jisc-funded LOCH Project....

  20. Rail Access to Yucca Mountain: Critical Issues

    SciTech Connect (OSTI)

    Halstead, R. J.; Dilger, F.; Moore, R. C.

    2003-02-25T23:59:59.000Z

    The proposed Yucca Mountain repository site currently lacks rail access. The nearest mainline railroad is almost 100 miles away. Absence of rail access could result in many thousands of truck shipments of spent nuclear fuel and high-level radioactive waste. Direct rail access to the repository could significantly reduce the number of truck shipments and total shipments. The U.S. Department of Energy (DOE) identified five potential rail access corridors, ranging in length from 98 miles to 323 miles, in the Final Environmental Impact Statement (FEIS) for Yucca Mountain. The FEIS also considers an alternative to rail spur construction, heavy-haul truck (HHT) delivery of rail casks from one of three potential intermodal transfer stations. The authors examine the feasibility and cost of the five rail corridors, and DOE's alternative proposal for HHT transport. The authors also address the potential for rail shipments through the Las Vegas metropolitan area.

  1. T-592: Cisco Security Advisory: Cisco Secure Access Control System...

    Energy Savers [EERE]

    92: Cisco Security Advisory: Cisco Secure Access Control System Unauthorized Password Change Vulnerability T-592: Cisco Security Advisory: Cisco Secure Access Control System...

  2. Equitable Access: Remote and Rural Communities 'Transport Needs...

    Open Energy Info (EERE)

    Equitable Access: Remote and Rural Communities 'Transport Needs' Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Equitable Access: Remote and Rural Communities...

  3. NBP RFI: Data Access Honeywell Responses To Request for Information...

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

    on Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy NBP RFI: Data Access Honeywell Responses To...

  4. access control scheme: Topics by E-print Network

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

    are becoming controlling access to graphic information on the Internet. Keywords: Access Control, SVG Documents, Vector graphic 1. INTRODUCTION Vector graphics is a time-honored...

  5. access control mac: Topics by E-print Network

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

    are becoming controlling access to graphic information on the Internet. Keywords: Access Control, SVG Documents, Vector graphic 1. INTRODUCTION Vector graphics is a time-honored...

  6. access control transportation: Topics by E-print Network

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

    are becoming controlling access to graphic information on the Internet. Keywords: Access Control, SVG Documents, Vector graphic 1. INTRODUCTION Vector graphics is a time-honored...

  7. access system based: Topics by E-print Network

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

    are becoming controlling access to graphic information on the Internet. Keywords: Access Control, SVG Documents, Vector graphic 1. INTRODUCTION Vector graphics is a time-honored...

  8. Increasing Community Access to Solar: Designing and Developing...

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

    Increasing Community Access to Solar: Designing and Developing a Shared Solar Photovoltaic System (Fact Sheet), U.S. Department of Energy (DOE) Increasing Community Access to...

  9. Request Access to the PARSIIe Project Management Lessons Learned...

    Energy Savers [EERE]

    Request Access to the PARSIIe Project Management Lessons Learned (PMLL) Repository Request Access to the PARSIIe Project Management Lessons Learned (PMLL) Repository PURPOSE...

  10. accessing integrated genomic: Topics by E-print Network

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

    Last Page Topic Index 1 RESEARCH ARTICLE Open Access Integrating cytogenetics and genomics in Environmental Sciences and Ecology Websites Summary: RESEARCH ARTICLE Open Access...

  11. V-120: EMC Smarts Network Configuration Manager Java RMI Access...

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

    0: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control V-120: EMC Smarts Network Configuration Manager Java RMI Access Control...

  12. access control policies: Topics by E-print Network

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

    Last Page Topic Index 1 Resiliency Policies in Access Control , Mahesh Tripunitara Computer Technologies and Information Sciences Websites Summary: Resiliency Policies in Access...

  13. In situ measurement of low-Z material coating thickness on high Z substrate for tokamaks

    SciTech Connect (OSTI)

    Mueller, D., E-mail: dmueller@pppl.gov; Roquemore, A. L.; Jaworski, M.; Skinner, C. H.; Miller, J.; Creely, A. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Raman, P.; Ruzic, D. [Department of Nuclear, Plasma, and Radiological Engineering, Center for Plasma Material Interaction, University of Illinois, Urbana, Illinois 61801 (United States)

    2014-11-15T23:59:59.000Z

    Rutherford backscattering of energetic particles can be used to determine the thickness of a coating of a low-Z material over a heavier substrate. Simulations indicate that 5 MeV alpha particles from an {sup 241}Am source can be used to measure the thickness of a Li coating on Mo tiles between 0.5 and 15??m thick. Using a 0.1?mCi source, a thickness measurement can be accomplished in 2 h of counting. This technique could be used to measure any thin, low-Z material coating (up to 1?mg/cm{sup 2} thick) on a high-Z substrate, such as Be on W, B on Mo, or Li on Mo. By inserting a source and detector on a moveable probe, this technique could be used to provide an in situ measurement of the thickness of Li coating on NSTX-U Mo tiles. A test stand with an alpha source and an annular solid-state detector was used to investigate the measurable range of low-Z material thicknesses on Mo tiles.

  14. ORIGIN OF CHEMICAL AND DYNAMICAL PROPERTIES OF THE GALACTIC THICK DISK

    SciTech Connect (OSTI)

    Bekki, Kenji [ICRAR, M468, University of Western Australia, Crawley, Western Australia, 6009 (Australia); Tsujimoto, Takuji [National Astronomical Observatory, Mitaka-shi, Tokyo 181-8588 (Japan)

    2011-09-01T23:59:59.000Z

    We adopt a scenario in which the Galactic thick disk was formed by minor merging between the first generation of the Galactic thin disk (FGTD) and a dwarf galaxy about {approx}9 Gyr ago and thereby investigate chemical and dynamical properties of the Galactic thick disk. In this scenario, the dynamical properties of the thick disk have long been influenced both by the mass growth of the second generation of the Galactic thin disk (i.e., the present thin disk) and by its non-axisymmetric structures. On the other hand, the early star formation history and chemical evolution of the thin disk was influenced by the remaining gas of the thick disk. Based on N-body simulations and chemical evolution models, we investigate the radial metallicity gradient, structural and kinematical properties, and detailed chemical abundance patterns of the thick disk. Our numerical simulations show that the ancient minor merger event can significantly flatten the original radial metallicity gradient of the FGTD, in particular, in the outer part, and also can be responsible for migration of inner metal-rich stars into the outer part (R > 10 kpc). The simulations show that the central region of the thick disk can develop a bar due to dynamical effects of a separate bar in the thin disk. Whether or not rotational velocities (V{sub {phi}}) can correlate with metallicities ([Fe/H]) for the simulated thick disks depends on the initial metallicity gradients of the FGTDs. The simulated orbital eccentricity distributions in the thick disk for models with higher mass ratios ({approx}0.2) and lower orbital eccentricities ({approx}0.5) of minor mergers are in good agreement with the corresponding observations. The simulated V{sub {phi}}-|z| relation of the thick disk in models with low orbital inclination angles of mergers are also in good agreement with the latest observational results. The vertical metallicity gradient of the simulated thick disk is rather flat or very weakly negative in the solar neighborhood. Our Galactic chemical evolution models show that if we choose two distinctive timescales for star formation in the thin and thick disks, then the models can explain both the observed metallicity distribution functions and correlations between [Mg/Fe] and [Fe/H] for the two disks in a self-consistent manner. We discuss how the early star formation history and chemical evolution of the Galactic thin disk can be influenced by the pre-existing thick disk.

  15. Open Access Publishing in Particle Physics

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    Particle Physics, often referred to as High Energy Physics (HEP), spearheaded the Open Access dissemination of scientific results with the mass mailing of preprints in the pre-Web era and with the launch of the arXiv preprint system at the dawn of the '90s. The HEP community is now ready for a further push to Open Access while retaining all the advantages of the peerreview system and, at the same time, bring the spiralling cost of journal subscriptions under control. I will present a plan for the conversion to Open Access of HEP peer-reviewed journals, through a consortium of HEP funding agencies, laboratories and libraries: SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics). SCOAP3 will engage with scientific publishers towards building a sustainable model for Open Access publishing, which is as transparent as possible for HEP authors. The current system in which journals income comes from subscription fees is replaced with a scheme where SCOAP3 compensates publishers for the costs...

  16. Access Control Taxonomy for Social Networks Adnan Ahmad, Brian Whitworth

    E-Print Network [OSTI]

    Whitworth, Brian

    of access control models for social networks based on lattice taxonomy where axes represent the properties users should be allowed to perform certain action. There are few access control models for social-Anwar- Zhao [6], Distributed access control [7] and Tie-RBAC [8]. The lattice classifies access control models

  17. California State University, Fullerton Finance System Access Request Form

    E-Print Network [OSTI]

    de Lijser, Peter

    #12;California State University, Fullerton Finance System Access Request Form CISO Signature Employee

  18. ETSU College of Medicine CBORD Door Access Authorization Form

    E-Print Network [OSTI]

    Karsai, Istvan

    ETSU College of Medicine CBORD Door Access Authorization Form 6/13/2011 Please grant access to: This access will remain in effect until the individual is no longer an active ETSU faculty list areas this individual will need access to: ____ ALL AREAS - ETSU Service Personnel Only ­ (i

  19. Security and Access Policy Security of and access to campus facilities, including campus residences

    E-Print Network [OSTI]

    Escher, Christine

    Security and Access Policy Security of and access to campus facilities, including campus residences facilities. Residence halls are secured 24 hours a day. Over extended breaks, the doors of all residence halls will be secured around the clock. Some facilities may have individual hours, which may vary

  20. Improving Data Access Efficiency by Using a Tagless Access Buffer (TAB)

    E-Print Network [OSTI]

    Whalley, David

    of the processor's energy expenditure. We describe the implemen- tation and use of a tagless access buffer (TAB University of Technology [perla/mckee/pers]@chalmers.se Abstract The need for energy efficiency continues) that greatly improves data access energy efficiency while slightly im- proving performance. The compiler

  1. The UCSB Access ID Card Application for Department Use Door Access will be needed

    E-Print Network [OSTI]

    Bigelow, Stephen

    of the University and must be returned to the department access controller (DAC) upon demand or when affiliation signature below asserts your identification information is correct and acknowledges your responsibility this or their own department's form/system to document approvals and record authorized access levels. Retention: One

  2. Educational Access i Educational Access for Orphans and Vulnerable Children in Woliso, Ethiopia

    E-Print Network [OSTI]

    Scheel, David

    Educational Access i Educational Access for Orphans and Vulnerable Children in Woliso, Ethiopia ABSTRACT The appalling rise in the number of orphans in Ethiopia has reached epidemic proportions. The United Nations Fund-Ethiopia (2007) estimates there are 4.6 million orphaned children, 85 % of which do

  3. Review your system access with your company's Information Security Officer. Access that is not

    E-Print Network [OSTI]

    Shepp, Larry

    Review your system access with your company's Information Security Officer. Access and downloading of information from laptop computers. Beware that your conversations may not be private or secure to be someone you trust in order to obtain personal or sensitive information. Additional travel security tips

  4. Reaction of NO2 with a pure, thick BaO film: the effect of temperature...

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

    film: the effect of temperature on the nature of NOx species formed. Abstract: The adsorption and reaction of NO2 on a thick (>30 ML), pure BaO film deposited onto an Al2O3...

  5. Analysis of Antarctic Sea Ice Thickness: A Newly Created Database for 2000-2009

    E-Print Network [OSTI]

    Morgan, Benjamin Patrick

    2012-10-19T23:59:59.000Z

    Observations of Antarctic sea ice thickness are sporadic in space and time, hindering knowledge of its variability. A proxy based on stage of development data from the National Ice Center (NIC) weekly operational charts is used to create a high...

  6. Maritime aerosol optical thickness measured by handheld sun photometers Kirk D. Knobelspiessea,b

    E-Print Network [OSTI]

    thickness (AOT) and 2ngstrfm exponent reveal varied aerosol populations. A K-means unsupervised Sensor Inter-comparison and Merger for Biological and Interdisciplinary Oceanic Studies (SIMBIOS) Project

  7. Influence of magnetic electrodes thicknesses on the transport properties of magnetic tunnel junctions with perpendicular anisotropy

    SciTech Connect (OSTI)

    Cuchet, Léa; Rodmacq, Bernard; Auffret, Stéphane; Sousa, Ricardo C.; Dieny, Bernard [SPINTEC, UMR 8191, CEA-INAC/CNRS/UJF-Grenoble 1/Grenoble-INP, 38054 Grenoble Cedex (France)

    2014-08-04T23:59:59.000Z

    The influence of the bottom and top magnetic electrodes thicknesses on both perpendicular anisotropy and transport properties is studied in (Co/Pt)/Ta/CoFeB/MgO/FeCoB/Ta magnetic tunnel junctions. By carefully investigating the relative magnetic moment of the two electrodes as a function of their thicknesses, we identify and quantify the presence of magnetically dead layers, likely localized at the interfaces with Ta, that is, 0.33?nm for the bottom electrode and 0.60?nm for the top one. Critical thicknesses (spin-reorientation transitions) are determined as 1.60 and 1.65?nm for bottom and top electrodes, respectively. The tunnel magnetoresistance ratio reaches its maximum value, as soon as both effective (corrected from dead layer) electrode thicknesses exceed 0.6?nm.

  8. Enhanced radiation tolerance in nitride multilayered nanofilms with small period-thicknesses

    SciTech Connect (OSTI)

    Hong Mengqing; Ren Feng; Zhang Hongxiu; Xiao Xiangheng; Tian Canxin; Fu Dejun; Jiang Changzhong [School of Physics and Technology and Center for Electron Microscopy, Wuhan University, Wuhan 430072 (China); Yang Bing [School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072 (China); Wang Yongqiang [Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2012-10-08T23:59:59.000Z

    This paper demonstrates a substantial enhancement in radiation tolerance for small period-thickness of CrN/AlTiN multilayered nanofilms. CrN/AlTiN multilayered nanofilms with period-thicknesses of 3, 5, 7, and 9 nm were irradiated by 190 keV Ar{sup +} ions to fluences ranging from 1 to 5 Multiplication-Sign 10{sup 16} ions/cm{sup 2}. Nanofilm with 3 nm period-thickness begins to be amorphized under 5 Multiplication-Sign 10{sup 16} ions/cm{sup 2}, while those with larger period-thicknesses are amorphized under 3 Multiplication-Sign 10{sup 16} ions/cm{sup 2}. Our results show that multilayered ceramic nanofilms are potential radiation tolerant materials with good properties. The interfaces in the multilayered nanofilms act as good sinks to absorb the radiation-induced defects.

  9. Effective zero-thickness model for a conductive membrane driven by an electric field

    E-Print Network [OSTI]

    Bazant, Martin Z.

    The behavior of a conductive membrane in a static (dc) electric field is investigated theoretically. An effective zero-thickness model is constructed based on a Robin-type boundary condition for the electric potential at ...

  10. Measuring Tail Thickness under GARCH and an Application to Extremal Exchange Rate Changes

    E-Print Network [OSTI]

    Wagner, Niklas; Marsh, Terry A.

    2003-01-01T23:59:59.000Z

    relations and Extremes of a GARCH(1,1) Process, Annals ofMeasuring Tail Thickness under GARCH And an Application todistribution functions including GARCH and propose a model-

  11. A determination of the effective thickness of a liquid deuterium target for a quasielastic scattering experiment

    E-Print Network [OSTI]

    Turkewitz, Jared Ripley

    2010-01-01T23:59:59.000Z

    The effective thickness of a liquid deuterium target was determined by measuring the yield of the neutron-deuteron elastic scattering cross section. The flux of incident neutrons was determined by a fission ionization ...

  12. Thickness Measurement of Fracture Fluid Gel Filter Cake after Static Build Up and Shear Erosion 

    E-Print Network [OSTI]

    Xu, Ben

    2011-08-08T23:59:59.000Z

    . Despite proven economic benefit, the hydraulic fracture fluid damages the producing formation and the propped fracture. To analyze the gel damage effect quantitatively, the filter cake thickness is used as a parameter that has not been measured before...

  13. Thickness Measurement of Fracture Fluid Gel Filter Cake after Static Build Up and Shear Erosion

    E-Print Network [OSTI]

    Xu, Ben

    2011-08-08T23:59:59.000Z

    . Despite proven economic benefit, the hydraulic fracture fluid damages the producing formation and the propped fracture. To analyze the gel damage effect quantitatively, the filter cake thickness is used as a parameter that has not been measured before...

  14. Oxide thickness measurement technique for duplex-layer Zircaloy-4 cladding

    SciTech Connect (OSTI)

    McClelland, R.G.; O'Leary, P.M. (Siemens Nuclear Power Corp., Richland, WA (United States))

    1992-01-01T23:59:59.000Z

    Siemens Nuclear Power Corporation (SNP) is investigating the use of duplex-layer Zircaloy-4 tubing to improve the waterside corrosion resistance of cladding for high-burnup pressurized water reactor (PWR) fuel designs. Standard SNP PWR cladding is typically 0.762-mm (0.030-in.)-thick Zircaloy-4. The SNP duplex cladding is nominally 0.660-mm (0.026-in.)-thick Zircalloy-4 with an [approximately]0.102-mm (0.004-in.) outer layer of another, more corrosion-resistant, zirconium-based alloy. It is common industry practice to monitor the in-reactor corrosion behavior of Zircaloy cladding by using an eddy-current lift-off' technique to measure the oxide thickness on the outer surface of the fuel cladding. The test program evaluated three different cladding samples, all with the same outer diameter and wall thickness: Zircaloy-4 and duplex clad types D2 and D4.

  15. Thick and Thin Film Polymer CNT Nanocomposites for Thermoelectric Energy Conversion and Transparent Electrodes

    E-Print Network [OSTI]

    Fisher, Frank

    Thick and Thin Film Polymer ­ CNT Nanocomposites for Thermoelectric Energy Conversion gradient. Thermoelectric materials harvest electricity from waste heat or any temperature gradient]. The PDDA/(SWNT+DOC) system produced transparent (> 82% visible light transmittance) and electrically

  16. Evaluation of discontinuity stresses in thick walled cylindrical shells by means of an embedded polariscope

    E-Print Network [OSTI]

    Cano, Narciso Ortiz

    1968-01-01T23:59:59.000Z

    EVALUATION OF DISCONTINUITY STRESSES IN THICK WALLED CYLINDRICAL SHELLS BY MEANS OF AN EMBEDDED POLARISCOPE A Thesis By NARCISO ORTIZ CANO, JR. Submitted to the Graduate College of the Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January, 196B Major Sub)ect: Aerospace Engineering EVALUATION OF DISCONTINUITY STRESSES IN THICK WALLED CYLINDRICAL SHELLS BY MEANS OF AN EMBEDDED POLARISCOPE A Thesis By NARCISO ORTIZ CANO, JR. Approved...

  17. Thickness estimation of subsurface layers in asphalt pavement using monstatic ground penetrating radar

    E-Print Network [OSTI]

    Lau, Chun Lok

    1991-01-01T23:59:59.000Z

    for the degree of MASTER OF SCIENCE December 1991 Major Subject: Electrical Engineering THICKNESS ESTIMATION OF SUBSURFACE LAYERS IN ASPHALT PAVEMENT USING MONSTATIC GROUND PENETRATING RADAR A Thesis CHUN LOK LAU Approved as to style and content by... ACKNOWLEDGEMENTS. LIST OF FIGURES. . CHAPTER I INTRODUCTION. 1. 1 Importance of pavement profile data. 1. 2 Principle of Ground Penetrating Radar (GPR) . . . 1. 3 Subsurface layer thickness measurement method. . . . . . II GPR ANTENNA AND SYSTEM CALIBRATION...

  18. Infrared Transmissometer to Measure the Thickness of NbN Thin Films

    E-Print Network [OSTI]

    Sunter, Kristen A; Lang, Christopher I; Berggren, Karl K

    2015-01-01T23:59:59.000Z

    We present an optical setup that can be used to characterize the thicknesses of thin NbN films to screen samples for fabrication and to better model the performance of the resulting superconducting nanowire single photon detectors. The infrared transmissometer reported here is easy to use, gives results within minutes and is non-destructive. Thus, the thickness measurement can be easily integrated into the workflow of deposition and characterization. Comparison to a similar visible-wavelength transmissometer is provided.

  19. The effect of stratum thickness ratio on crossflow in a stratified petroleum reservoir 

    E-Print Network [OSTI]

    Kereluk, Michael Joseph

    1966-01-01T23:59:59.000Z

    THE EFFECT OF STRATUM THICKNESS RATIO ON CROSSFLOW IN A STRATIFIED PETROLEUM RESERVOIR A Thesis By Michael J. Kereluk Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 4966 Major Subject: Petroleum Engineering THE EFFECT OF STRATUM THICKNESS RATIO ON CROSSFLOW IN A STRATIFIED PETROLEUM RESERVOIR A Thesis By Michael I. Kereluk Approved as to style and content by: Chazrma of Com 'ttee...

  20. Access Venture Partners | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki HomeASN Power ProjectsAbrahamAccess FundAccess

  1. Searching for the metal-weak thick disc in the solar neighbourhood

    E-Print Network [OSTI]

    Bacham E. Reddy; David L. Lambert

    2008-09-05T23:59:59.000Z

    An abundance analysis is presented of 60 metal-poor stars drawn from catalogues of nearby stars provided by Ariyanto et al. (2005) and Schuster et al. (2006). In an attempt to isolate a sample of metal-weak thick disc stars, we applied the kinematic criteria $V_{\\rm rot} \\geq 100$ km s$^{-1}$, $|U_{LSR}| \\leq 140$ km s$^{-1}$, and $|W_{LSR}| \\leq 100$ km s$^{-1}$. Fourteen stars satisfying these criteria and having [Fe/H] $\\leq -1.0$ are included in the sample of 60 stars. Eight of the 14 have [Fe/H] $\\geq -1.3$ and may be simply thick disc stars of slightly lower than average [Fe/H]. The other six have [Fe/H] from -1.3 to -2.3 and are either metal-weak thick disc stars or halo stars with kinematics mimicking those of the thick disc. The sample of 60 stars is completed by eight thick disc stars, 20 stars of a hybrid nature (halo or thick disc stars), and 18 stars with kinematics distinctive of the halo.

  2. ACCESS TO INFORMATION MANUAL NATIONAL RESEARCH FOUNDATION

    E-Print Network [OSTI]

    Jarrett, Thomas H.

    of poverty, wealth creation and knowledge generation and preservation. The NRF views the Promotion of Access an opportunity to deal with knowledge and information management in a holistic and integrated manner so, but rather an opportunity to deal with information management in a holistic and integrated manner. The NRF

  3. REVIEW Open Access Pulmonary arterial hypertension

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    REVIEW Open Access Pulmonary arterial hypertension David Montani1,2,3 , Sven Günther1,2,3 , Peter,2,3 and Olivier Sitbon1,2,3* Abstract Pulmonary arterial hypertension (PAH) is a chronic and progressive disease and designated as clinical group 1'. Group 2 'Pulmonary hypertension due to left heart diseases' is divided

  4. Revised 26 January2011 LCLS Access Policy

    E-Print Network [OSTI]

    Wechsler, Risa H.

    1 Revised 26 January2011 LCLS Access Policy Introduction and Goals As a national user facility, LCLS aims to attract diverse users and to enable a broad set of impor- tant science that takes advantage of its unique capabilities. With these aims in mind, LCLS has been designed to include six

  5. TRANSMISSION OPEN ACCESS IN CHILE Hugh Rudnick

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    considered or are considering deregulating their electric power sectors to allow for competition among implemented in Chilean electric power systems, the incorporation of an open access scheme, the application conditions in interconnected power systems. One line of thinking has viewed the third party use

  6. Special Access Program Policies, Responsibilities, and Procedures

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2002-07-11T23:59:59.000Z

    Special Access Program Policies, Responsibilities, and Procedures This Manual is for OFFICIAL USE ONLY and will not be distributed on the Directives Portal. For distribution, please contact the Director, Office of Security, at 202-586-6775. Cancels: DOE M 471.2-3

  7. Special Access Program Policies, Responsibilities, and Procedure

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2007-10-29T23:59:59.000Z

    This Manual is for OFFICIAL USE ONLY and will not be distributed on the Directives Portal. For distribution, please contact the Executive Secretary of the Special Access Program Oversight Committee at 202-586-6775. Cancels DOE M 471.2-3A. Canceled by DOE O 471.5.

  8. Example School Communications Email about Open Access 

    E-Print Network [OSTI]

    Tate, Dominic

    2015-03-23T23:59:59.000Z

    This is an example text for an email to be sent to the School of Mathematics as part of preparations for implementing Open Access requirements for the post-2014 REF. This is made available here as part of the Jisc-funded LOCH Project....

  9. UH Parking Access & Mid-Pacific Institute

    E-Print Network [OSTI]

    Hall Keller Hall Physical Science Building Pacific Ocean Science & Technology Kuykendall AnnexStairs Pond UH Parking Access & Mid-Pacific Institute Exit M¯anoa Innovation Center and Kau Auxiliary Services Pacific Biomedical Warehouse Agricultural Science Shops Campus Security n Landscaping

  10. UH Parking Access & Mid-Pacific Institute

    E-Print Network [OSTI]

    Hall Keller Hall Physical Science Building Pacific Ocean Science & Technology Kuykendall Annex44 44 Stairs Pond UH Parking Access & Mid-Pacific Institute Exit M¯anoa Innovation Center and Kau Auxiliary Services Pacific Biomedical Warehouse Agricultural Science Shops Campus Security n Landscaping

  11. RESEARCH Open Access Reconciling taxonomy and phylogenetic

    E-Print Network [OSTI]

    Matsen, Frederick A. "Erick"

    RESEARCH Open Access Reconciling taxonomy and phylogenetic inference: formalism and algorithms: Although taxonomy is often used informally to evaluate the results of phylogenetic inference and the root that solves a "subcoloring" problem to express the difference between a taxonomy and a phylogeny at a given

  12. Top Tips for Accessing Oxford's Information Resources

    E-Print Network [OSTI]

    Oxford, University of

    Top Tips for Accessing Oxford's Information Resources And How Brasenose College Library Fits In #12, electronic journals and books Top Tip 1: Attend the induction session in your departmental library #12;Oxford ­ departmental, faculty, college Top Tip 2: Explore smaller libraries ­ www

  13. Top Tips for Accessing Oxford's Information Resources

    E-Print Network [OSTI]

    Oxford, University of

    Top Tips for Accessing Oxford's Information Resources And How Brasenose College Library Fits In #12, electronic journals and books Top Tip 1: Attend the Bodleian induction sessions for your subject #12;Oxford ­ departmental, faculty, college Top Tip 2: Explore smaller libraries ­ www

  14. Characterizing Open Access Publishing at Your Institution

    E-Print Network [OSTI]

    Hubbard, David E.; Li, Yu

    2014-11-03T23:59:59.000Z

    access scholarly communication in Tanzanian public universities. 76th IFLA General Conference and Assembly, Gothenburg, Sweden. Retrieved March 3, 2014, from http://conference.ifla.org/past-wlic/2010/138-dulle-en.pdf. Gul, S., Shah, T. A., & Bhagwan, T. A...

  15. RESEARCH Open Access The Being of Leadership

    E-Print Network [OSTI]

    Myers, Lawrence C.

    RESEARCH Open Access The Being of Leadership Wiley W Souba Abstract The ethical foundation that a realigned leadership framework - one that distinguishes being a leader as the ontological basis for what pillars of leadership - awareness, commitment, integrity, and authenticity - are proposed as fundamental

  16. OFC'13 Summary ---Access Networks-I

    E-Print Network [OSTI]

    California at Davis, University of

    They Be A Blueprint for Optical Networks? Ali Khayrallah Ericsson Research USA Spectrum crunch, Feedback from receiver's residential network model to a converged access/aggregation platform based on SDN. Network convergence to reduce number of devices such as PON for residential, business as well as mobile backhauling ­ Long reach

  17. Bonus points The National Access Scheme

    E-Print Network [OSTI]

    Chen, Ying

    Bonus points The National Access Scheme ANU offers bonus points for nationally strategic senior secondary subjects, and in recognition of difficult circumstances that students face in their studies. Bonus) will be awarded. Bonus points to do not apply to programs with an ATAR cut-off of 98 or higher. Bonus Points

  18. REVIEW Open Access Micro computed tomography for

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    REVIEW Open Access Micro computed tomography for vascular exploration Lyubomir Zagorchev1 studies. Micro Computed Tomography (micro-CT) has emerged in recent years as the preferred modality and suggestions aimed at making micro-CT more accurate, replicable, and robust. Introduction Micro Computed

  19. Access to Solar: Designing and Developing a

    E-Print Network [OSTI]

    Increasing Community Access to Solar: Designing and Developing a Shared Solar Photovoltaic System Updated guide highlights project models, policies, and financing Community shared solar programs enable members of a neighborhood or community to pool resources and share the benefits of a single solar

  20. Accessibility Application Blue Badge Car Park UK

    E-Print Network [OSTI]

    Painter, Kevin

    i Accessibility Application Blue Badge Car Park UK Konstantinos Grassos H00113751 August 2012. In this project, Blue Badge Car Park (BBCP) is presented which is actually a mobile-based park finder application. It specifically focuses on finding parking spaces for wheelchair users, which are indicated by the blue badge

  1. Uniqueness of RS2 type thick branes supported by a scalar field

    E-Print Network [OSTI]

    S. T. Abdyrakhmanov; K. A. Bronnikov; B. E. Meierovich

    2005-03-13T23:59:59.000Z

    We study thick brane world models as Z_2-symmetric domain walls supported by a scalar field with an arbitrary potential V(\\phi) in 5D general relativity. Under the global regularity requirement, such configurations (i) have always an AdS asymptotic far from the brane, (ii) are only possible if V(\\phi) has an alternating sign and (iii) V(\\phi) should satisfy a certain fine-tuning type equality. Thus a thick brane with any admissible V(\\phi) is a regularized version of the RS2 brane immersed in the AdS_5 bulk. The thin brane limit is realized in a universal manner by including an arbitrary thick brane model in a one-parameter family, where the parameter "a" is associated with brane thickness; the asymptotic value of V(\\phi) (related to \\Lambda_5, the effective cosmological constant) remains a-independent. The problem of ordinary matter confinement on the brane is discussed for a test scalar field. Its stress-energy tensor is found to diverge at the AdS horizon for both thin and thick branes, making a serious problem for this class of brane world models.

  2. Thick adherent dielectric films on plastic substrates and method for depositing same

    DOE Patents [OSTI]

    Wickboldt, Paul (Walnut Creek, CA); Ellingboe, Albert R. (Fremont, CA); Theiss, Steven D. (Woodbury, MN); Smith, Patrick M. (San Ramon, CA)

    2002-01-01T23:59:59.000Z

    Thick adherent dielectric films deposited on plastic substrates for use as a thermal barrier layer to protect the plastic substrates from high temperatures which, for example, occur during laser annealing of layers subsequently deposited on the dielectric films. It is desirable that the barrier layer has properties including: a thickness of 1 .mu.m or greater, adheres to a plastic substrate, does not lift-off when cycled in temperature, has few or no cracks and does not crack when subjected to bending, resistant to lift-off when submersed in fluids, electrically insulating and preferably transparent. The thick barrier layer may be composed, for example, of a variety of dielectrics and certain metal oxides, and may be deposited on a variety of plastic substrates by various known deposition techniques. The key to the method of forming the thick barrier layer on the plastic substrate is maintaining the substrate cool during deposition of the barrier layer. Cooling of the substrate maybe accomplished by the use of a cooling chuck on which the plastic substrate is positioned, and by directing cooling gas, such as He, Ar and N.sub.2, between the plastic substrate and the cooling chucks. Thick adherent dielectric films up to about 5 .mu.m have been deposited on plastic substrates which include the above-referenced properties, and which enable the plastic substrates to withstand laser processing temperatures applied to materials deposited on the dielectric films.

  3. Method and apparatus for ultrasonic characterization through the thickness direction of a moving web

    DOE Patents [OSTI]

    Jackson, Theodore (Atlanta, GA); Hall, Maclin S. (Marietta, GA)

    2001-01-01T23:59:59.000Z

    A method and apparatus for determining the caliper and/or the ultrasonic transit time through the thickness direction of a moving web of material using ultrasonic pulses generated by a rotatable wheel ultrasound apparatus. The apparatus includes a first liquid-filled tire and either a second liquid-filled tire forming a nip or a rotatable cylinder that supports a thin moving web of material such as a moving web of paper and forms a nip with the first liquid-filled tire. The components of ultrasonic transit time through the tires and fluid held within the tires may be resolved and separately employed to determine the separate contributions of the two tire thicknesses and the two fluid paths to the total path length that lies between two ultrasonic transducer surfaces contained within the tires in support of caliper measurements. The present invention provides the benefit of obtaining a transit time and caliper measurement at any point in time as a specimen passes through the nip of rotating tires and eliminates inaccuracies arising from nonuniform tire circumferential thickness by accurately retaining point-to-point specimen transit time and caliper variation information, rather than an average obtained through one or more tire rotations. Morever, ultrasonic transit time through the thickness direction of a moving web may be determined independent of small variations in the wheel axle spacing, tire thickness, and liquid and tire temperatures.

  4. Extraplanar Dust: a Tracer of Cold Dense Gas in the Thick Disks of Spiral Galaxies

    E-Print Network [OSTI]

    J. Christopher Howk

    2004-10-15T23:59:59.000Z

    The interstellar thick disks of galaxies contain not only gas, but significant quantities of dust. Most of our knowledge of extraplanar dust in disk galaxies comes from direct broadband optical imaging of these systems, wherein the dust is identified due to the irregular extinction it produces against the thick disk and bulge stars. This observational technique is sensitive to only the most dense material, and we argue much of the material identified in this way traces a cold phase of the interstellar thick disks in galaxies. The presence of a cold, dense phase likely implies the interstellar pressures in the thick disks of spiral galaxies can be quite high. This dense phase of the interstellar medium may also fueling thick disk star formation, and H-alpha observations are now revealing H II regions around newly-formed OB stars associations in several galaxies. We argue that the large quantities of dust and the morphologies of the structures traced by the dust imply that much of the extraplanar material in disk galaxies must have been expelled from the underlying thin disk.

  5. Thickness-dependent metal-insulator transition in epitaxial SrRuO? ultrathin films

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

    Shen, Xuan [Nanjing Univ. (China); Brookhaven National Lab. (BNL), Upton, NY (United States); Qiu, Xiangbiao [Nanjing Univ. (China); Su, Dong [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhou, Shengqiang [Inst. of Ion Beam Physics and Materials Research, Dresden (Germany); Li., Aidong [Nanjing Univ. (China); Wu, Di [Nanjing Univ. (China)

    2015-01-07T23:59:59.000Z

    Transport characteristics of ultrathin SrRuO? films, deposited epitaxially on TiO?-terminated SrTiO? (001) single-crystal substrates, were studied as a function of film thickness. Evolution from a metallic to an insulating behavior is observed as the film thickness decreases from 20 to 4 unit cells. In films thicker than 4 unit cells, the transport behavior obeys the Drude low temperature conductivity with quantum corrections, which can be attributed to weak localization. Fitting the data with 2-dimensional localization model indicates that electron-phonon collisions are the main inelastic relaxation mechanism. In the film of 4 unit cells in thickness, the transport behavior follows variable range hopping model, indicating a strongly localized state. Magnetoresistance measurements reveal a likely magnetic anisotropy with the magnetic easy axis along the out-of-plane direction.

  6. Cosmic Ray Test of Mini-drift Thick Gas Electron Multiplier Chamber for Transition Radiation Detector

    E-Print Network [OSTI]

    S. Yang; S. Das; B. Buck; C. Li; T. Ljubicic; R. Majka; M. Shao; N. Smirnov; G. Visser; Z. Xu; Y. Zhou

    2015-02-17T23:59:59.000Z

    A thick gas electron multiplier (THGEM) chamber with an effective readout area of 10$\\times$10 cm$^{2}$ and a 11.3 mm ionization gap has been tested along with two regular gas electron multiplier (GEM) chambers in a cosmic ray test system. The thick ionization gap makes the THGEM chamber a mini-drift chamber. This kind mini-drift THGEM chamber is proposed as part of a transition radiation detector (TRD) for identifying electrons at an Electron Ion Collider (EIC) experiment. Through this cosmic ray test, an efficiency larger than 94$\\%$ and a spatial resolution $\\sim$220 $\\mu$m are achieved for the THGEM chamber at -3.65 kV. Thanks to its outstanding spatial resolution and thick ionization gap, the THGEM chamber shows excellent track reconstruction capability. The gain uniformity and stability of the THGEM chamber are also presented.

  7. Permeability-thickness determination from transient production response at the southeast geysers

    SciTech Connect (OSTI)

    Faulder, D.D.

    1996-08-01T23:59:59.000Z

    The Fetkovich production decline curve analysis method was extended for application to vapor-dominated geothermal reservoirs for the purpose of estimating the permeability-thickness product (kh) from the transient production response. The analytic dimensionless terms for pressure, production rate, decline rate, and decline time were derived for saturated steam using the real gas potential and customary geothermal production units of pounds-mass per hour. The derived terms were numerically validating using ``Geysers-line`` reservoir properties at initial water saturation of 0 and at permeabilities of 1, 10, and 100 mD. The production data for 48 wells in the Southeast Geysers were analyzed and the permeability-thickness products determined from the transient production response using the Fetkovich production decline type curve. The kh results were in very good agreement with the published range at the Southeast Geysers and show regions of high permeability-thickness.

  8. Thickness-dependent metal-insulator transition in epitaxial SrRuO? ultrathin films

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

    Shen, Xuan; Qiu, Xiangbiao; Su, Dong; Zhou, Shengqiang; Li., Aidong; Wu, Di

    2015-01-07T23:59:59.000Z

    Transport characteristics of ultrathin SrRuO? films, deposited epitaxially on TiO?-terminated SrTiO? (001) single-crystal substrates, were studied as a function of film thickness. Evolution from a metallic to an insulating behavior is observed as the film thickness decreases from 20 to 4 unit cells. In films thicker than 4 unit cells, the transport behavior obeys the Drude low temperature conductivity with quantum corrections, which can be attributed to weak localization. Fitting the data with 2-dimensional localization model indicates that electron-phonon collisions are the main inelastic relaxation mechanism. In the film of 4 unit cells in thickness, the transport behavior follows variablemore »range hopping model, indicating a strongly localized state. Magnetoresistance measurements reveal a likely magnetic anisotropy with the magnetic easy axis along the out-of-plane direction.« less

  9. Tuning the thickness of electrochemically grafted layers in large area molecular junctions

    SciTech Connect (OSTI)

    Fluteau, T.; Bessis, C.; Barraud, C., E-mail: clement.barraud@univ-paris-diderot.fr; Della Rocca, M. L.; Lafarge, P. [Université Paris Diderot, Sorbonne Paris Cité, MPQ, UMR 7162, CNRS, 75205 Paris Cedex 13 (France); Martin, P.; Lacroix, J.-C. [Université Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR 7086, CNRS, 15 rue J.-A. de Baïf, 75205 Paris Cedex 13 (France)

    2014-09-21T23:59:59.000Z

    We have investigated the thickness, the surface roughness, and the transport properties of oligo(1-(2-bisthienyl)benzene) (BTB) thin films grafted on evaporated Au electrodes, thanks to a diazonium-based electro-reduction process. The thickness of the organic film is tuned by varying the number of electrochemical cycles during the growth process. Atomic force microscopy measurements reveal the evolution of the thickness in the range of 2–27 nm. Its variation displays a linear dependence with the number of cycles followed by a saturation attributed to the insulating behavior of the organic films. Both ultrathin (2 nm) and thin (12 and 27 nm) large area BTB-based junctions have then been fabricated using standard CMOS processes and finally electrically characterized. The electronic responses are fully consistent with a tunneling barrier in case of ultrathin BTB film whereas a pronounced rectifying behavior is reported for thicker molecular films.

  10. Distributed Random Access Algorithm: Scheduling and Congesion Control

    E-Print Network [OSTI]

    Jiang, Libin

    This paper provides proofs of the rate stability, Harris recurrence, and ?-optimality of carrier sense multiple access (CSMA) algorithms where the random access (or backoff) parameter of each node is adjusted dynamically. ...

  11. Auctions to gas transmission access : the British experience

    E-Print Network [OSTI]

    McDaniel, Tanga

    2002-01-01T23:59:59.000Z

    When access to monopoly owned networks is constrained auctioning access rights can increase the efficiency of allocations relative to negotiation and grandfathering when there is sufficient competition among network users. ...

  12. Sensing-based Opportunistic Channel Access Department of Computer Science

    E-Print Network [OSTI]

    Liu, Xin

    and adapt to appropriate frequency, power, and transmission schemes. They can opportunistically access initiatives and advanced radio technology, more flexible opportunistic spectrum access has great potential initiatives towards flexible and dynamic spectrum policies, including regulation recommendations [7

  13. agreement databases access: Topics by E-print Network

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

    list at http:isguides.hw.ac.ukdatabases Mathematics Websites Summary: .g.: Enter search terms here and click Go' 12;You can access anything that says: You cannot access...

  14. amigo online access: Topics by E-print Network

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

    list at http:isguides.hw.ac.ukdatabases Mathematics Websites Summary: .g.: Enter search terms here and click Go' 12;You can access anything that says: You cannot access...

  15. accession medical standards: Topics by E-print Network

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

    list at http:isguides.hw.ac.ukdatabases Mathematics Websites Summary: .g.: Enter search terms here and click Go' 12;You can access anything that says: You cannot access...

  16. Evaluation of Jumboframes Feasibility in LTE Access Networks

    E-Print Network [OSTI]

    Gesbert, David

    Evolution (LTE) represents the cutting- edge broadband wireless access technology in providing ubiqui- tous, such as video. A typical assessment factor of the performance of an access network is its throughput capability

  17. RESEARCH Open Access Impact of physical incompatibility on drug mass

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RESEARCH Open Access Impact of physical incompatibility on drug mass flow rates: example drugs simultaneously but through limited venous accesses. Several intravenous therapies have rates of drugs infused simultaneously to the patient, through an in vitro study. Methods: Furosemide

  18. Dynamic Optimal Random Access for Vehicle-to-Roadside Communications

    E-Print Network [OSTI]

    Huang, Jianwei

    significant momentum in recent years, especially after the Federal Communications Commission (FCCDynamic Optimal Random Access for Vehicle-to-Roadside Communications Man Hon Cheung, Fen Hou access, efficient resource allocation schemes are required to fully utilize the limited communication

  19. LOCH/ARMA Open Access Good Practice - University of Edinburgh 

    E-Print Network [OSTI]

    Tate, Dominic

    2015-03-19T23:59:59.000Z

    Presentation delivered by Dominic Tate at ARMA Open Access Good Practice event (London 19-03-2015). These slides detail the University of Edinbugh's approach to implementing Open Access requirements for the post-2014 REF....

  20. LOCH/ARMA Open Access Good Practice - St Andrews University 

    E-Print Network [OSTI]

    Aucock, Janet

    2015-03-19T23:59:59.000Z

    Presentation delivered by Janet Aucock at ARMA Open Access Good Practice event (London 19-03-2015). These slides detail St Andrews University's approach to implementing Open Access requirements for the post-2014 REF....

  1. access site bleeding: Topics by E-print Network

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

    project Granger Morgan 5 TouchNet's Terms and Conditions By accessing and using this web site, you agree that your access to and use of this site is subject to the...

  2. The Asymmetric Thick Disk: A Star Count and Kinematic Analysis. II The Kinematics

    E-Print Network [OSTI]

    Jeniffer E. Parker; Roberta M. Humphreys; Timothy C. Beers

    2003-11-30T23:59:59.000Z

    We report a kinematic signature associated with the observed asymmetry in the distribution of thick disk/inner halo stars interior to the Solar circle described in Paper I. In that paper we found a statistically significant excess (20% to 25 %) of stars in quadrant I (l ~ 20 deg to 55 deg) both above and below the plane (b ~ +/- 25 deg to +/- 45 deg) compared to the complementary region in quadrant IV. We have measured Doppler velocities for 741 stars, selected according to the same magnitude and color criteria, in the direction of the asymmetry and in the corresponding fields in quadrant IV. We have also determined spectral types and metallicities measured from the same spectra. We not only find an asymmetric distribution in the V_LSR velocities for the stars in the two regions, but the angular rate of rotation, w, for the stars in quadrant I reveals a slower effective rotation rate compared to the corresponding quadrant IV stars. We use our [Fe/H] measurements to separate the stars into the three primary population groups, halo, thick disk, and disk, and conclude that it is primarily the thick disk stars that show the slower rotation in quadrant I. A solution for the radial, tangential and vertical components of the V_LSR velocities, reveals a significant lag of ~ 80 to 90 km/s in the direction of Galactic rotation for the thick disk stars in quadrant I, while in quadrant IV, the same population has only a ~ 20 km/s lag. The results reported here support a rotational lag among the thick disk stars due to a gravitational interaction with the bar as the most likely explanation for the asymmetry in both the star counts and the kinematics. The affected thick disk stars, however, may be associated with the recently discovered Canis Major debris stream or a similar merger event (abridged).

  3. The Human Right to Access Electricity

    SciTech Connect (OSTI)

    Tully, Stephen

    2006-04-15T23:59:59.000Z

    Electricity access is already well established within the framework of human rights, either as an implicit attribute of a pre-existing right (such as non-discrimination or sustainable development) or explicitly in the context of eliminating discrimination against women. There is also broad acknowledgement by states of the desirability of eliminating energy poverty - for all, but particularly for the rural poor, and women. (author)

  4. Low latency memory access and synchronization

    DOE Patents [OSTI]

    Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton On Hudson, NY); Coteus, Paul W. (Yorktown Heights, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Hoenicke, Dirk (Ossining, NY); Ohmacht, Martin (Brewster, NY); Steinmacher-Burow, Burkhard D. (Mount Kisco, NY); Takken, Todd E. (Mount Kisco, NY), Vranas; Pavlos M. (Bedford Hills, NY)

    2010-10-19T23:59:59.000Z

    A low latency memory system access is provided in association with a weakly-ordered multiprocessor system. Bach processor in the multiprocessor shares resources, and each shared resource has an associated lock within a locking device that provides support for synchronization between the multiple processors in the multiprocessor and the orderly sharing of the resources. A processor only has permission to access a resource when it owns the lock associated with that resource, and an attempt by a processor to own a lock requires only a single load operation, rather than a traditional atomic load followed by store, such that the processor only performs a read operation and the hardware locking device performs a subsequent write operation rather than the processor. A simple prefetching for non-contiguous data structures is also disclosed. A memory line is redefined so that in addition to the normal physical memory data, every line includes a pointer that is large enough to point to any other line in the memory, wherein the pointers to determine which memory line to prefetch rather than some other predictive algorithm. This enables hardware to effectively prefetch memory access patterns that are non-contiguous, but repetitive.

  5. Low latency memory access and synchronization

    DOE Patents [OSTI]

    Blumrich, Matthias A. (Ridgefield, CT); Chen, Dong (Croton On Hudson, NY); Coteus, Paul W. (Yorktown Heights, NY); Gara, Alan G. (Mount Kisco, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Hoenicke, Dirk (Ossining, NY); Ohmacht, Martin (Brewster, NY); Steinmacher-Burow, Burkhard D. (Mount Kisco, NY); Takken, Todd E. (Mount Kisco, NY); Vranas, Pavlos M. (Bedford Hills, NY)

    2007-02-06T23:59:59.000Z

    A low latency memory system access is provided in association with a weakly-ordered multiprocessor system. Each processor in the multiprocessor shares resources, and each shared resource has an associated lock within a locking device that provides support for synchronization between the multiple processors in the multiprocessor and the orderly sharing of the resources. A processor only has permission to access a resource when it owns the lock associated with that resource, and an attempt by a processor to own a lock requires only a single load operation, rather than a traditional atomic load followed by store, such that the processor only performs a read operation and the hardware locking device performs a subsequent write operation rather than the processor. A simple prefetching for non-contiguous data structures is also disclosed. A memory line is redefined so that in addition to the normal physical memory data, every line includes a pointer that is large enough to point to any other line in the memory, wherein the pointers to determine which memory line to prefetch rather than some other predictive algorithm. This enables hardware to effectively prefetch memory access patterns that are non-contiguous, but repetitive.

  6. Thickness dependent exchange bias in martensitic epitaxial Ni-Mn-Sn thin films

    SciTech Connect (OSTI)

    Behler, Anna [IFW Dresden, Institute for Complex Materials, P.O. Box 27 01 16, 01171 Dresden (Germany) [IFW Dresden, Institute for Complex Materials, P.O. Box 27 01 16, 01171 Dresden (Germany); Department of Physics, Institute for Solid State Physics, Dresden University of Technology, 01062 Dresden (Germany); Teichert, Niclas; Auge, Alexander; Hütten, Andreas [Department of Physics, Thin Films and Physics of Nanostructures, Bielefeld University, 33501 Bielefeld (Germany)] [Department of Physics, Thin Films and Physics of Nanostructures, Bielefeld University, 33501 Bielefeld (Germany); Dutta, Biswanath; Hickel, Tilmann [Max-Planck Institut für Eisenforschung, 40237 Düsseldorf (Germany)] [Max-Planck Institut für Eisenforschung, 40237 Düsseldorf (Germany); Waske, Anja [IFW Dresden, Institute for Complex Materials, P.O. Box 27 01 16, 01171 Dresden (Germany)] [IFW Dresden, Institute for Complex Materials, P.O. Box 27 01 16, 01171 Dresden (Germany); Eckert, Jürgen [IFW Dresden, Institute for Complex Materials, P.O. Box 27 01 16, 01171 Dresden (Germany) [IFW Dresden, Institute for Complex Materials, P.O. Box 27 01 16, 01171 Dresden (Germany); Institute of Materials Science, Dresden University of Technology, 01062 Dresden (Germany)

    2013-12-15T23:59:59.000Z

    A thickness dependent exchange bias in the low temperature martensitic state of epitaxial Ni-Mn-Sn thin films is found. The effect can be retained down to very small thicknesses. For a Ni{sub 50}Mn{sub 32}Sn{sub 18} thin film, which does not undergo a martensitic transformation, no exchange bias is observed. Our results suggest that a significant interplay between ferromagnetic and antiferromagnetic regions, which is the origin for exchange bias, is only present in the martensite. The finding is supported by ab initio calculations showing that the antiferromagnetic order is stabilized in the phase.

  7. Method and apparatus for determining diameter and wall thickness of minute hollow spherical shells

    DOE Patents [OSTI]

    Steinman, D.A.

    1980-05-30T23:59:59.000Z

    Method and apparatus for determining diameter and wall thickness of hollow microspheres or shells wherein terminal velocities of shells traveling in fluid-filled conduits of differing diameters are measured. A wall-effect factor is determined as a ratio of the terminal velocities, and shell outside diameter may then be ascertained as a predetermined empirical function of wall-effect factor. For shells of known outside diameter, wall thickness may then be ascertained as a predetermined empirical function of terminal velocity in either conduit.

  8. Measurement of neutron yield by 62 MeV proton beam on a thick Beryllium target

    E-Print Network [OSTI]

    R. Alba; M. Barbagallo; P. Boccaccio; A. Celentano; N. Colonna; G. Cosentino; A. Del Zoppo; A. Di Pietro; J. Esposito; P. Figuera; P. Finocchiaro; A. Kostyukov; C. Maiolino; M. Osipenko; G. Ricco; M. Ripani; C. M. Viberti; D. Santonocito; M. Schillaci

    2012-08-08T23:59:59.000Z

    In the framework of research on IVth generation reactors and high intensity neutron sources a low-power prototype neutron amplifier was recently proposed by INFN. It is based on a low-energy, high current proton cyclotron, whose beam, impinging on a thick Beryllium converter, produces a fast neutron spectrum. The world database on the neutron yield from thick Beryllium target in the 70 MeV proton energy domain is rather scarce. The new measurement was performed at LNS, covering a wide angular range from 0 to 150 degrees and an almost complete neutron energy interval. In this contribution the preliminary data are discussed together with the proposed ADS facility.

  9. Engineering guides for estimating cover material thickness and volume for uranium mill tailings

    SciTech Connect (OSTI)

    Rogers, V.C.; Nielson, K.K.; Merrell, G.B.

    1982-09-01T23:59:59.000Z

    Five nomographs have been prepared that facilitate the estimation of cover thickness and cover material volume for the Uranium Mill Tailing Remedial Action Program. Key parameters determined include the cover thickness with either a surface radon flux or a boundary radon air concentration criterion and the total volume of cover material required for two different treatments of the edge slopes. Also included in the engineering guide are descriptions and representative values for the radon source term, the diffusion coefficients and the key meteorological parameters. 16 refs., 7 figs., 2 tabs.

  10. Industrial engineering study of tank farm access qualifications and validations

    SciTech Connect (OSTI)

    Sterling, S.G., Westinghouse Hanford

    1996-07-01T23:59:59.000Z

    Engineering study of alternatives to reduce costs of validation worker`s qualification prior to Tank Farm area access.

  11. LOCH: Planning for Open Access in REF - Discussion Points 

    E-Print Network [OSTI]

    Tate, Dominic; Aucock, Janet

    2015-03-19T23:59:59.000Z

    Slides and checklist from facilitated discussion session from ARMA Open Access Good Practice event (London 19-03-2015)....

  12. Statler College Research Data Center Access and Usage Policy

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    Statler College Research Data Center Access and Usage Policy Objective Access to the Statler under WVU and federal guidelines. Scope This policy applies to all Statler staff, faculty, administrators, officers, contractors and students. Policy Access to the RDC shall be limited to those authorized

  13. Key Management with Policy-based Access Control Christian Cachin

    E-Print Network [OSTI]

    Cachin, Christian

    a crucial role for the security of network-based key management. Modern access-control systems are policy in policies. In this presentation we discuss how to integrate a policy-based access control system using XACMLKey Management with Policy-based Access Control Christian Cachin Divay Bansal G¨unter Karjoth 27

  14. Analyzing and Developing Role-Based Access Control Models

    E-Print Network [OSTI]

    Sheldon, Nathan D.

    Analyzing and Developing Role-Based Access Control Models by Liang Chen A thesis submitted-based access control (RBAC) has become today's dominant access control model, and many of its theoretical and practical aspects are well understood. However, certain aspects of more advanced RBAC models

  15. A Provenance-based Access Control Model Jaehong Park

    E-Print Network [OSTI]

    Sandhu, Ravi

    A Provenance-based Access Control Model Jaehong Park Institute for Cyber Security University of protecting provenance data. In this paper, we propose a novel provenance-based access control model additional capabilities beyond those available in traditional access control models. We utilize a notion

  16. USING PARAMETERIZED UML TO SPECIFY AND COMPOSE ACCESS CONTROL MODELS

    E-Print Network [OSTI]

    Ray, Indrakshi

    USING PARAMETERIZED UML TO SPECIFY AND COMPOSE ACCESS CONTROL MODELS Indrakshi Ray, Na Li, Dae is to model the access control frameworks, compose the models, and analyze the resulting model to identify problems. In this pa- per we outline a technique for modeling and composing access control policy

  17. Comparing the Expressive Power of Access Control Mahesh V. Tripunitara

    E-Print Network [OSTI]

    Li, Ninghui

    Comparing the Expressive Power of Access Control Models Mahesh V. Tripunitara tripunit the expressive power of access control models is rec- ognized as a fundamental problem in computer security the expressive power of access control models into a single context and to compare such models to one another

  18. Benefits of Location-Based Access Control: A Literature Study

    E-Print Network [OSTI]

    Wieringa, Roel

    Benefits of Location-Based Access Control: A Literature Study Andr´e van Cleeff, Wolter Pieters.pieters, r.j.wieringa}@utwente.nl Abstract--Location-based access control (LBAC) has been suggested-based, physical and logical access control, (ii) improving the transparency of LBAC decision making, and (iii

  19. CREDIT MARKET ACCESS AND PROFITABILITY IN TUNISIAN AGRICULTURE

    E-Print Network [OSTI]

    Foltz, Jeremy D.

    CREDIT MARKET ACCESS AND PROFITABILITY IN TUNISIAN AGRICULTURE Abstract This work develops an econometric model that links credit access with agricultural profitability and investment. Using data. Econometric estimates are run for agricultural investment and profitability as a function of credit access

  20. CONTENT ADAPTION FOR A STREAMING ENVIRONMENT UNIVERSAL MULTIMEDIA ACCESS

    E-Print Network [OSTI]

    Perkis, Andrew

    CONTENT ADAPTION FOR A STREAMING ENVIRONMENT ENABLING UNIVERSAL MULTIMEDIA ACCESS Andrew Perkis Multimedia Access (UMA) is about how users can access the same media resources with different terminal developed taking advantage of some of the possibilities in the upcoming Multimedia Framework, MPEG-21 A test

  1. Access Control Policies and Languages in Open Environments

    E-Print Network [OSTI]

    Samarati, Pierangela

    systems is specifying and enforcing access control security policies regulating interactions between languages and coming from different systems can be combined. 1 Introduction Access control is the process should be granted or denied. Access control plays an important role in overall system security

  2. Harvard Open Access Project Good Practices For University

    E-Print Network [OSTI]

    Chen, Yiling

    Talking about a policy 66 Revising this guide 67 Additional resources 71 (Endnotes) #12;Good Practices Practices for University Open-Access Policies Preface This is a guide to good practices for university open2013-09-30 Harvard Open Access Project Good Practices For University Open-Access Policies Edited

  3. A Smart Energy System with Distributed Access Control

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    systems to date support remote control and automation but not access control, making them applicable to HVAC (heating, ventilation, and air conditioning) systems. SE has the potential of significantly access from a remote site over the Internet, in which case access control in the form of a shared key

  4. Invited Viewer Invited Viewer iSIS Portal Access

    E-Print Network [OSTI]

    Dennett, Daniel

    1 Invited Viewer Invited Viewer iSIS Portal Access Tufts "Invited Viewers" such as parents and spouses can be granted view-only access to a student's iSIS secure personal information. Students previously registered by another student or you do not have a Tufts Username and active iSIS access (most

  5. IBM Human Ability and Accessibility Center Executive brief

    E-Print Network [OSTI]

    to making products and services accessible, to its commitment to research, IBM has been an industry leader graduated from New York's Pace University with a Master's degree in computer science. A skilled and highlyIBM Human Ability and Accessibility Center Executive brief Accessibility at IBM: An integrated

  6. PeopleSoft (ERP) Finance Access Request Form User Guide

    E-Print Network [OSTI]

    de Lijser, Peter

    PeopleSoft (ERP) Finance Access Request Form User Guide Last Revised: 3/22/11 #12;PeopleSoft ERP Finance Access Request Form User Guide FINAL Last Revised: 3/22/11 Page ii REVISION CONTROL Document Title: PeopleSoft ERP Finance Access Request Form User Guide Author: IT Training & Support File Reference

  7. UC SANTA BARBARA POLICY AND PROCEDURE Physical Access Control

    E-Print Network [OSTI]

    Bigelow, Stephen

    property. A successful program is dependent on every member of the community being diligent access controls are to enhance the personal safety of the campus community and to secure University physical access controls for all facilities managed by UCSB (University facilities). Physical access

  8. accurate web accessible: Topics by E-print Network

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

    accurate web accessible First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Web Accessibility Accessibility...

  9. Measuring Accessibility by Automobile Report # 11 in the series

    E-Print Network [OSTI]

    Levinson, David M.

    Measuring Accessibility by Automobile Report # 11 in the series Access to Destinations Study Report by Automobile March 2010 6. 7. Author(s) 8. Performing Organization Report No. David Levinson, Bernadette Marion measures for the Twin Cities region that measure accessibility by the automobile mode over the period from

  10. File: Accessing Restricted Resources Using Network Connect Page 1 of 6 Dec. 2012 on the Secure Remote Access Service

    E-Print Network [OSTI]

    Jiang, Huiqiang

    to connecting. You must be approved by your Responsibility Center Administrator to access Network ConnectFile: Accessing Restricted Resources Using Network Connect Page 1 of 6 Dec. 2012 on the Secure Restricted University Online Resources Using Network Connect on the Secure Remote Access Service Table

  11. AGREEMENT FOR MOBILE TECHNOLOGY ACCESS AND My signature on the "Mobile Technology Access and Payment Option Request"

    E-Print Network [OSTI]

    Oregon, University of

    AGREEMENT FOR MOBILE TECHNOLOGY ACCESS AND ALLOWANCE My signature on the "Mobile Technology Access and conditions identified in the Access to Mobile Technology and the Payment Options for Mobile Technology policies [http://hr.uoregon.edu/policy/MobileTechnologyDevice.html]. 2. I understand that that I must

  12. Advances in Surface Plasmon Resonance Imaging Enable Quantitative Tracking of Nanoscale Changes in Thickness and

    E-Print Network [OSTI]

    Dutcher, John

    Advances in Surface Plasmon Resonance Imaging Enable Quantitative Tracking of Nanoscale Changes: To date, detailed studies of the thickness of coatings using surface plasmon resonance have been limited a significant improvement to surface plasmon resonance imaging (SPRi) that allows this sensitive technique

  13. Topology of desiccation crack patterns in clay and invariance of crack interface area with thickness

    E-Print Network [OSTI]

    Tajkera Khatun; Tapati Dutta; Sujata Tarafdar

    2014-12-09T23:59:59.000Z

    We study the crack patterns developed on desiccating films of an aqueous colloidal suspension of bentonite on a glass substrate. Varying the thickness of the layer $h$ gives the following new and interesting results: (i)We identify a critical thickness $h_{c}$, above which isolated cracks join each other to form a fully connected network. A topological analysis of the crack network shows that the Euler number falls to a minimum at $h_{c}$. (ii) We find further, that the total vertical surface area of the clay $A_v$, which has opened up due to cracking, is a constant independent of the layer thickness for $h \\geq h_c$. (iii) The total area of the glass substrate $A_s$, exposed by the hierarchical sequence of cracks is also a constant for $h \\geq h_c$. These results are shown to be consistent with a simple energy conservation argument, neglecting dissipative losses. (iv) Finally we show that if the crack pattern is viewed at successively finer resolution, the total cumulative area of cracks visible at a certain resolution, scales with the layer thickness. A suspension of Laponite in methanol is found to exhibit similar salient features (i)-(iv), though in this case the crack initiation process for very thin layers is quite different.

  14. Characterization of thick 4H-SiC hot-wall CVD layers

    SciTech Connect (OSTI)

    Paisley, M.J.; Irvine, K.G.; Kordina, O.; Singh, R.; Palmour, J.W.; Carter, C.H. Jr.

    1999-07-01T23:59:59.000Z

    Epitaxial 4H-SiC layers suitable for high power devices have been grown in a hot-wall chemical-vapor deposition (CVD) system. These layers were subsequently characterized for many parameters important in device development and production. The uniformity of both thickness and doping is presented. Doping trends vs. temperature and growth rate is shown for the p-type dopant used. The n-type dopant drops in concentration with increasing temperature or increasing growth rate. In contrast, the p-type dopant increases in concentration with decreasing temperature or increasing growth rate. A simple descriptive model for this behavior is presented. The outcome from capacitance-voltage and SIMS measurements demonstrate that transitions from n to n{sup {minus}}, or p to p{sup {minus}}, and even n to p levels can be made quickly without adjustment to growth conditions. The ability to produce sharp transitions without process changes avoids degrading the resulting surface morphology or repeatability of the process. Avoiding process changes is particularly important in growth of thick layers since surface roughness tends to increase with layer thickness. Device results from diodes producing two different blocking voltages in excess of 5 kV is also shown. The higher voltage diodes exhibited a breakdown behavior which was near the theoretical limit for the epitaxial layer thickness and doping level grown.

  15. Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei

    E-Print Network [OSTI]

    Chen, Lie-Wen; Ko, Che Ming; Li, Bao-An; Xu, Jun.

    2010-01-01T23:59:59.000Z

    of finite nuclei and nuclear matter properties. We find that existing data on neutron skin thickness Delta r(np) of Sn isotopes give an important constraint on the symmetry energy E(sym)(rho(0)) and its density slope L at saturation density rho(0). Combining...

  16. INVESTIGATION OF SEASONAL SEA-ICE THICKNESS VARIABILITY IN THE ROSS SEA Beth A. Schellenberg

    E-Print Network [OSTI]

    Geiger, Cathleen

    archive consists of over 20,000 records over the Antarc- tic pack ice between 1980 and the presentINVESTIGATION OF SEASONAL SEA-ICE THICKNESS VARIABILITY IN THE ROSS SEA Beth A. Schellenberg P1.23 1. INTRODUCTION A number of studies suggest a connections between sea-ice variability

  17. Ion adsorption and equilibrium distribution of charges in a cell of finite thickness

    E-Print Network [OSTI]

    Boyer, Edmond

    281 Ion adsorption and equilibrium distribution of charges in a cell of finite thickness G. Barbero-consistente, on évalue la distribution d'équilibre de charges dans une cellule d'épaisseur finie, en présence d'adsorption surface est évaluée, en étendant le problème classique d'adsorption de Langmuir aux situations loin du

  18. Improvement of radar ice-thickness measurements of Greenland outlet glaciers using SAR processing

    E-Print Network [OSTI]

    Braaten, David A.; Gogineni, S. Prasad; Tammana, Dilip; Namburi, Saikiran; Paden, John; Gurumoorthy, Krishna K.

    2002-01-01T23:59:59.000Z

    Extensive aircraft-based radar ice-thickness measurements over the interior and outlet-glacier regions of the Greenland ice sheet have been obtained by the University of Kansas since 1993, with the latest airborne surveys conducted in May 2001...

  19. Thermal Conductivity Measurement of Xe-Implanted Uranium Dioxide Thick Films using Multilayer Laser Flash Analysis

    SciTech Connect (OSTI)

    Nelson, Andrew T. [Los Alamos National Laboratory

    2012-08-30T23:59:59.000Z

    The Fuel Cycle Research and Development program's Advanced Fuels campaign is currently pursuing use of ion beam assisted deposition to produce uranium dioxide thick films containing xenon in various morphologies. To date, this technique has provided materials of interest for validation of predictive fuel performance codes and to provide insight into the behavior of xenon and other fission gasses under extreme conditions. In addition to the structural data provided by such thick films, it may be possible to couple these materials with multilayer laser flash analysis in order to measure the impact of xenon on thermal transport in uranium dioxide. A number of substrate materials (single crystal silicon carbide, molybdenum, and quartz) containing uranium dioxide films ranging from one to eight microns in thickness were evaluated using multilayer laser flash analysis in order to provide recommendations on the most promising substrates and geometries for further investigation. In general, the uranium dioxide films grown to date using ion beam assisted deposition were all found too thin for accurate measurement. Of the substrates tested, molybdenum performed the best and looks to be the best candidate for further development. Results obtained within this study suggest that the technique does possess the necessary resolution for measurement of uranium dioxide thick films, provided the films are grown in excess of fifty microns. This requirement is congruent with the material needs when viewed from a fundamental standpoint, as this length scale of material is required to adequately sample grain boundaries and possible second phases present in ceramic nuclear fuel.

  20. Commercialization of thick film solar cell. Final technical report, 9/15/79-9/14/80

    SciTech Connect (OSTI)

    None

    1980-01-01T23:59:59.000Z

    Films of cadmium sulfide and cadmium telluride have been produced by screen printing and sintering. Cadmium sulfide films ten microns thick had a resistivity in the 10 ohm-cm range. A technique was developed for forming a cadmium telluride layer on top of a cadmium sulfide layer. Process control and device preparation are areas requiring further study.

  1. Optical Histology: A Method to Visualize Microvasculature in Thick Tissue Sections of Mouse Brain

    E-Print Network [OSTI]

    Rose, Michael R.

    Optical Histology: A Method to Visualize Microvasculature in Thick Tissue Sections of Mouse Brain% paraformaldehyde. The organ is then sliced into 1 mm sections and optically cleared, or made transparent, using FocusClear, a proprietary optical clearing agent. After optical clearing, the DiI-labeled tissue

  2. Aluminum hydroxide coating thickness measurements and brushing tests on K West Basin fuel elements

    SciTech Connect (OSTI)

    Pitner, A.L.

    1998-09-11T23:59:59.000Z

    Aluminum hydroxide coating thicknesses were measured on fuel elements stored in aluminum canisters in K West Basin using specially developed eddy current probes . The results were used to estimate coating inventories for MCO fuel,loading. Brushing tests successfully demonstrated the ability to remove the coating if deemed necessary prior to MCO loading.

  3. Near-Field Scanning Optical Microscopy of Temperature-and Thickness-Dependent Morphology and

    E-Print Network [OSTI]

    Buratto, Steve

    Near-Field Scanning Optical Microscopy of Temperature- and Thickness-Dependent Morphology 21, 2000 We use near-field scanning optical microscopy (NSOM) to probe the local optical spectroscopy with bulk techniques such as differ- ential scanning calorimetry (DSC) and X-ray diffractom- etry

  4. ROUGH THIN PAVEMENT THICKNESS ESTIMATION BY GPR N. Pinel, L. Liu, C. Bourlier, Y. Wang

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ROUGH THIN PAVEMENT THICKNESS ESTIMATION BY GPR N. Pinel, L. Liu, C. Bourlier, Y. Wang IREENA pavements consider flat interfaces for simpli- fication. In this paper, the roughness of the surfaces is taken into account. First, the amplitudes of the first two echoes from the rough thin pavement

  5. Lanthanum silicate gate dielectric stacks with subnanometer equivalent oxide thickness utilizing an interfacial silica consumption reaction

    E-Print Network [OSTI]

    Garfunkel, Eric

    Lanthanum silicate gate dielectric stacks with subnanometer equivalent oxide thickness utilizing-8087 Received 13 April 2005; accepted 6 June 2005; published online 26 July 2005 A silicate reaction between process route to interface elimination, while producing a silicate dielectric with a higher temperature

  6. Effects of thickness on the piezoelectric and dielectric properties of lead zirconate titanate thin films

    E-Print Network [OSTI]

    Sottos, Nancy R.

    Lead zirconate titanate PZT thin films with a Zr/Ti ratio of 52/48 were deposited on platinized silicon. Both the piezoelectric properties and the dielectric constants of the PZT thin films were found thin films. The measured changes in properties with thickness were correlated with the residual stress

  7. Determination of refractive index, thickness, and the optical losses of thin films from

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Determination of refractive index, thickness, and the optical losses of thin films from prism­film.4760, 300.1030. 1. Introduction Transparent thin films find wide applications in optics: coating, sensors and optical losses. The optical losses of a thin film have three different origins: sur- face scattering due

  8. Radar Measurements of Ice Sheet Thickness of Outlet Glaciers in Greenland D. Braaten+

    E-Print Network [OSTI]

    Kansas, University of

    Radar Measurements of Ice Sheet Thickness of Outlet Glaciers in Greenland D. Braaten+ and S of Kansas Lawrence, KS 66045 U.S.A. Abstract ­ We have conducted airborne measurements over the Greenland the mass balance of the Greenland ice sheet, the University of Kansas has been operating an airborne radio

  9. Smooth thick braneworlds and the Gibbons-Kallosh-Linde no-go theorem

    E-Print Network [OSTI]

    Marco Dias; J. M. Hoff da Silva; Roldão da Rocha

    2015-04-17T23:59:59.000Z

    After working out the so called braneworld sum rules formalism in order to encompass Gauss-Bonnet terms, the generation of thick branes is proposed, even with a periodic extra dimension, what circumvents the Gibbons-Kallosh-Linde no-go theorem in this context.

  10. Temperature effects on failure thickness and deflagration-to-detonation transition in PBX 9502 and TATB

    SciTech Connect (OSTI)

    Asay, B.W.; McAfee, J.B.

    1993-04-01T23:59:59.000Z

    The deflagration-to-detonation (DDT) behavior of TATB has been investigated at high temperatures and severe confinement. comparison is made to other common explosives under similar confinement. TATB did not DDT under these conditions. The failure thickness of PBX 9502 at 250{degrees}C has also been determined. Two mm appears to be the limiting value at this temperature.

  11. Temperature effects on failure thickness and deflagration-to-detonation transition in PBX 9502 and TATB

    SciTech Connect (OSTI)

    Asay, B.W.; McAfee, J.B.

    1993-01-01T23:59:59.000Z

    The deflagration-to-detonation (DDT) behavior of TATB has been investigated at high temperatures and severe confinement. comparison is made to other common explosives under similar confinement. TATB did not DDT under these conditions. The failure thickness of PBX 9502 at 250[degrees]C has also been determined. Two mm appears to be the limiting value at this temperature.

  12. THE MOTION OF SUPERCONDUCTING VORTICES IN THIN FILMS OF VARYING THICKNESS

    E-Print Network [OSTI]

    Chapman, Jon

    with superconductor/vacuum interfaces is considered. A vortex is #12;rst shown to intersect such an interface normallyTHE MOTION OF SUPERCONDUCTING VORTICES IN THIN FILMS OF VARYING THICKNESS S.J. CHAPMAN #3; D.R. HERON y MATHEMATICAL INSTITUTE OXFORD OX1 3LB UK Abstract. The interaction of superconducting vortices

  13. Thickness limitations in carbon nanotube reinforced silicon nitride coatings synthesized by vapor infiltration

    SciTech Connect (OSTI)

    Eres, Gyula [ORNL

    2012-01-01T23:59:59.000Z

    Chemical vapor infiltration is a convenient method for synthesizing carbon nanotube (CNT)-reinforced ceramic coatings. The thickness over which infiltration is relatively uniform is limited by gas phase diffusion in the pore structure. These effects were investigated in two types of silicon nitride matrix composites. With CNTs that were distributed uniformly on the substrate surface dense coatings were limited to thicknesses of several microns. With dual structured CNT arrays produced by photolithography coatings up to 400 gm thick were obtained with minimal residual porosity. Gas transport into these dual structured materials was facilitated by creating micron sized channels between "CNT pillars" (i.e. each pillar consisted of a large number of individual CNTs). The experimental results are consistent with basic comparisons between the rates of gas diffusion and silicon nitride growth in porous structures. This analysis also provides a general insight into optimizing infiltration conditions during the fabrication of thick CNT-reinforced composite coatings. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

  14. Evaluation of the Quality of Thick Fibre Composites Using Immersion and Air-

    E-Print Network [OSTI]

    Evaluation of the Quality of Thick Fibre Composites Using Immersion and Air- Coupled Ultrasonic. Two ultrasonic through-transmission techniques were evaluated: immersion and air-coupled technique. The immersion system was used for frequencies from 1 MHz to 10 MHz. The frequency range for the air

  15. Finite Element Analysis of Nonlinear Thickness-shear Vibrations of AT-cut Quartz Crystal Plates

    E-Print Network [OSTI]

    Wang, Ji

    Finite Element Analysis of Nonlinear Thickness-shear Vibrations of AT-cut Quartz Crystal Plates Ji, dujianke}@nbu.edu.cn Abstract--The nonlinear finite element analysis is performed with the nonlinear a smaller size in comparison with the 3D approach. General procedure of nonlinear finite element analysis

  16. Light Trapping Textures Designed by Electromagnetic Optimization for Sub-Wavelength Thick Solar Cells

    E-Print Network [OSTI]

    California at Irvine, University of

    the surface of the solar cell, where n is the material refractive index. This ray-optics absorption enhancement limit only holds when the thickness of the solar cell is much greater than the optical wavelength limit of 4n2 50. Introduction Texturing of solar cell surfaces allows for absorption enhancement, owing

  17. Embedding metal electrodes in thick active layers for ITO-free plasmonic organic solar cells

    E-Print Network [OSTI]

    Park, Namkyoo

    Embedding metal electrodes in thick active layers for ITO-free plasmonic organic solar cells%) in optical absorption over both a conventional ITO organic solar cell and a conventional plasmonic organic solar cell with top-loaded metallic grating is predicted in the proposed structure. Optimal positioning

  18. An ordinary differential equation model for full thickness wounds and the effects of diabetes

    E-Print Network [OSTI]

    Maini, Philip K.

    An ordinary differential equation model for full thickness wounds and the effects of diabetes L and diabetic healing. The model can be used to estimate the contributions of growth and contraction to dermal healing. Increasing dermal growth is suggested as a treatment for enhancing healing of diabetic wounds

  19. 15.7% Efficient 10-?m-Thick Crystalline Silicon Solar Cells Using Periodic Nanostructures

    E-Print Network [OSTI]

    Branham, Matthew Sanders

    Only ten micrometer thick crystalline silicon solar cells deliver a short-circuit current of 34.5 mA cm[superscript ?2] and power conversion efficiency of 15.7%. The record performance for a crystalline silicon solar cell ...

  20. Vertical strain and doping gradients in thick GaN layers H. Siegle,a)

    E-Print Network [OSTI]

    Nabben, Reinhard

    between layer and common substrates, e.g., sapphire or GaAs.1 Consequently, most GaN layers and also from the surface of the GaN layer nearer to the substrate interface, as can be seen from the CLVertical strain and doping gradients in thick GaN layers H. Siegle,a) A. Hoffmann, L. Eckey, and C

  1. Factors affecting the availability of thick epiphyte mats and other potential nest platforms for

    E-Print Network [OSTI]

    Factors affecting the availability of thick epiphyte mats and other potential nest platforms, Catherine Conroy, Volker Bahn, Irene A. Manley, Alvin Cober, and David B. Lank Abstract: Nest platforms about factors that affect the availability of platforms or the growth of canopy epiphytes that provide

  2. FLOW CONDITIONING DESIGN IN THICK LIQUID PROTECTION S.G. Durbin

    E-Print Network [OSTI]

    California at San Diego, University of

    issuing downwards from nozzles of thickness (small dimension) = 1 cm into ambient air for Reynolds conditioner was studied. As the flow conditioning element immediately upstream of the nozzle inlet, fine, and that free-surface fluctuations are strongly affected by changes in flow conditioner design, even in the near

  3. Terahertz Sensor for Non-Contact Thickness and Quality Measurement of Automobile Paints of Varying Complexity

    E-Print Network [OSTI]

    Su, Ke; Shen, Yao-Chun; Zeitler, J. Axel

    2014-06-06T23:59:59.000Z

    to resolve coating layers down to a thickness of 18 $mu{hbox{m}}$ and was validated for both single- and multi-layer automobile paint samples. Results of the terahertz measurements were benchmarked against other techniques that are currently used for non...

  4. Improving Access to Foundational Energy Performance Data

    SciTech Connect (OSTI)

    Studer, D.; Livingood, W.; Torcellini, P.

    2014-08-01T23:59:59.000Z

    Access to foundational energy performance data is key to improving the efficiency of the built environment. However, stakeholders often lack access to what they perceive as credible energy performance data. Therefore, even if a stakeholder determines that a product would increase efficiency, they often have difficulty convincing their management to move forward. Even when credible data do exist, such data are not always sufficient to support detailed energy performance analyses, or the development of robust business cases. One reason for this is that the data parameters that are provided are generally based on the respective industry norms. Thus, for mature industries with extensive testing standards, the data made available are often quite detailed. But for emerging technologies, or for industries with less well-developed testing standards, available data are generally insufficient to support robust analysis. However, even for mature technologies, there is no guarantee that the data being supplied are the same data needed to accurately evaluate a product?s energy performance. To address these challenges, the U.S. Department of Energy funded development of a free, publically accessible Web-based portal, the Technology Performance Exchange(TM), to facilitate the transparent identification, storage, and sharing of foundational energy performance data. The Technology Performance Exchange identifies the intrinsic, technology-specific parameters necessary for a user to perform a credible energy analysis and includes a robust database to store these data. End users can leverage stored data to evaluate the site-specific performance of various technologies, support financial analyses with greater confidence, and make better informed procurement decisions.

  5. Open Access: From Myth to Paradox

    ScienceCinema (OSTI)

    Paul Ginsparg

    2010-01-08T23:59:59.000Z

    True open access to scientific publications not only gives readers the possibility to read articles without paying subscription, but also makes the material available for automated ingestion and harvesting by 3rd parties. Once articles and associated data become universally treatable as computable objects, openly available to 3rd party aggregators and value-added services, what new services can we expect, and how will they change the way that researchers interact with their scholarly communications infrastructure? I will discuss straightforward applications of existing ideas and services, including citation analysis, collaborative filtering, external database linkages, interoperability, and other forms of automated markup, and speculate on the sociology of the next generation of users.

  6. Access to OUO | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA Newsletters 20103-03 AUDIT REPORT:Patricia DaviesEnergyAccess to

  7. 2e Carbon Access | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 Wind ProjectsourceInformationColorado School20090:Access

  8. UF Access List | Stanford Synchrotron Radiation Lightsource

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulence may bedieselsummer gasoline price to averageUF Access

  9. Access Fund Partners LP | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki HomeASN Power ProjectsAbrahamAccess Fund

  10. Thickness independent reduced forming voltage in oxygen engineered HfO{sub 2} based resistive switching memories

    SciTech Connect (OSTI)

    Sharath, S. U., E-mail: sharath@oxide.tu-darmstadt.de; Kurian, J.; Komissinskiy, P.; Hildebrandt, E.; Alff, L. [Institute of Materials Science, Technische Universität Darmstadt, 64287 Darmstadt (Germany); Bertaud, T.; Walczyk, C.; Calka, P. [IHP, Im Technologiepark 25, 15236 Frankfurt Oder (Germany); Schroeder, T. [IHP, Im Technologiepark 25, 15236 Frankfurt Oder (Germany); Brandenburgische Technische Universität, Konrad-Zuse-Strasse 1, 03046 Cottbus (Germany)

    2014-08-18T23:59:59.000Z

    The conducting filament forming voltage of stoichiometric hafnium oxide based resistive switching layers increases linearly with layer thickness. Using strongly reduced oxygen deficient hafnium oxide thin films grown on polycrystalline TiN/Si(001) substrates, the thickness dependence of the forming voltage is strongly suppressed. Instead, an almost constant forming voltage of about 3?V is observed up to 200?nm layer thickness. This effect suggests that filament formation and switching occurs for all samples in an oxidized HfO{sub 2} surface layer of a few nanometer thickness while the highly oxygen deficient thin film itself merely serves as a oxygen vacancy reservoir.

  11. Thickness effects on fracture toughness of ultra-high-molecular- weight polyethylene via the J-integral

    E-Print Network [OSTI]

    Lehmann, Jarvis Craig

    1992-01-01T23:59:59.000Z

    of different thickness 1T compact tension specimens with the same initial crack length were tested using ASTM E 813-87 multiple specimen methodology as a guide. Six J-R curves were produced corresponding to the mean thickness of each specimen set; mean...'s decreasing toughness behavior with increasing thickness. UHMW-PE was found to have a tearing resistance, J-R curve, which increases with specimen thickness and crack growth and comparable to tough, high tearing resistant steels. This high tearing...

  12. DTEVISUAL: A VISUALIZATION SYSTEM FOR TEACHING ACCESS CONTROL USING DOMAIN TYPE ENFORCEMENT *

    E-Print Network [OSTI]

    Wang, Chaoli

    of these modern systems. This paper presents DTEvisual, a visualization system for teaching access control usingDTEVISUAL: A VISUALIZATION SYSTEM FOR TEACHING ACCESS CONTROL USING DOMAIN TYPE ENFORCEMENT * Yifei access control and modern models of access control. DTEvisual facilitatesgraphicaldepiction

  13. Managed Access by Controlled Sensing (MACS)

    SciTech Connect (OSTI)

    Curtiss, J.A.; Indusi, J.P.

    1994-08-01T23:59:59.000Z

    During chemical weapons challenge inspections, the CWC treaty allows ``alternate means`` of access to be proposed by the nation challenged. BNL`s Safeguards, Safety and Nonproliferation Division is funded by the Defense Nuclear Agency to develop a system to provide the challenge inspection team with a ``virtual presence`` within the facility while denying personal access. A general purpose configuration of a mobile station manned by site personnel and a base station manned by the challenge inspector, supported by a flexible communication system, will allow facility personnel to tailor the basic model to their site. Design of the MACS system is based on maximum use of commercial equipment that is available on the international market. Design requirements for the MACS system include methods of establishing geographical position, distance measuring equipment for use in verifying dimensions on floor plans, video and two-way audio links between the mobile unit and the base station, and portability and versatility of the equipment. The MACS platform will also support deployment of selected instrumentation which the site may offer to the challenge inspection team. This paper describes the design and construction of the prototype MACS system.

  14. MAPPING THE STELLAR STRUCTURE OF THE MILKY WAY THICK DISK AND HALO USING SEGUE PHOTOMETRY

    SciTech Connect (OSTI)

    De Jong, Jelte T. A.; Rix, Hans-Walter; Martin, Nicolas F. [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Yanny, Brian [Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Dolphin, Andrew E. [Raytheon Company, 1151 East Hermans Road, Tucson, AZ 85756 (United States); Beers, Timothy C., E-mail: dejong@mpia.d [Department of Physics and Astronomy and JINA: Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 (United States)

    2010-05-01T23:59:59.000Z

    We map the stellar structure of the Galactic thick disk and halo by applying color-magnitude diagram (CMD) fitting to photometric data from the Sloan Extension for Galactic Understanding and Exploration (SEGUE) survey. The SEGUE imaging scans allow, for the first time, a comprehensive analysis of Milky Way structure at both high and low latitudes using uniform Sloan Digital Sky Survey photometry. Incorporating photometry of all relevant stars simultaneously, CMD fitting bypasses the need to choose single tracer populations. Using old stellar populations of differing metallicities as templates, we obtain a sparse three-dimensional map of the stellar mass distribution at |Z|>1 kpc. Fitting a smooth Milky Way model comprising exponential thin and thick disks and an axisymmetric power-law halo allows us to constrain the structural parameters of the thick disk and halo. The thick-disk scale height and length are well constrained at 0.75 {+-} 0.07 kpc and 4.1 {+-} 0.4 kpc, respectively. We find a stellar halo flattening within {approx}25 kpc of c/a = 0.88 {+-} 0.03 and a power-law index of 2.75 {+-} 0.07 (for 7 kpc {approx_lt}R{sub GC} {approx_lt} 30 kpc). The model fits yield thick-disk and stellar halo densities at the solar location of {rho}{sub thick,sun} = 10{sup -2.3{+-}0.1} M{sub sun} pc{sup -3} and {rho}{sub halo,sun} = 10{sup -4.20{+-}0.05} M{sub sun} pc{sup -3}, averaging over any substructures. Our analysis provides the first clear in situ evidence for a radial metallicity gradient in the Milky Way's stellar halo: within R {approx_lt} 15 kpc the stellar halo has a mean metallicity of [Fe/H] {approx_equal} -1.6, which shifts to [Fe/H] {approx_equal} -2.2 at larger radii, in line with the two-component halo deduced by Carollo et al. from a local kinematic analysis. Subtraction of the best-fit smooth and symmetric model from the overall density maps reveals a wealth of substructures at all latitudes, some attributable to known streams and overdensities, and some new. A simple warp cannot account for the low latitude substructure, as overdensities occur simultaneously above and below the Galactic plane.

  15. Accessing TRANSP Output: A User's Guide Accessing TRANSP Output: A User's Guide

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    of such TRANSP analyses are stored on magnetic and laser disk on a VMS VAX cluster. The purpose of this User's . Guide is to describe how to access these analysis results in graphical form on a VAX system. The reader is not expected to have specialized VAX knowledge, although familiarity with fundamentals (e.g. how to log in

  16. EMPLOYEE FUEL ACCESS APPLICATION Use this application to request access for employees to use the campus service stations in conjunction with a fuel

    E-Print Network [OSTI]

    Kirschner, Denise

    EMPLOYEE FUEL ACCESS APPLICATION Use this application to request access for employees to use the campus service stations in conjunction with a fuel access device. In order to obtain fuel from for access. Employee access is not required for the U-M fleet vehicle equipped with an automated fuel device

  17. Neutron-skin thickness from the study of the anti-analog giant dipole resonance

    SciTech Connect (OSTI)

    Krasznahorkay, A.; Stuhl, L.; Csatlos, M.; Algora, A. [Inst. of Nucl. Res. of the Hungarian Acad. of Sci. (ATOMKI), H-4001 Debrecen, P.O. Box 51 (Hungary); Physics Department, Faculty of Science, University of Zagreb (Croatia); Kernfysisch Versneller Instituut, University of Groningen, Groningen (Netherlands); and others

    2012-10-20T23:59:59.000Z

    The {gamma}-decay of the anti-analog of the giant dipole resonance (AGDR) to the isobaric analog state has been measured following the p({sup 124}Sn,n) reaction at a beam energy of 600 MeV/nucleon. The energy of the transition was also calculated with state-of-the-art self-consistent relativistic random-phase approximation (RPA) and turned out to be very sensitive to the neutronskin thickness ({Delta}R{sub pn}). By comparing the theoretical results with the measured one, the {Delta}R{sub pn} value for {sup 124}Sn was deduced to be 0.21 {+-} 0.07 fm, which agrees well with the previous results. The present method offers new possibilities for measuring the neutron-skin thicknesses of very exotic isotopes.

  18. Post-cast EDM method for reducing the thickness of a turbine nozzle wall

    DOE Patents [OSTI]

    Jones, Raymond Joseph (Duanesburg, NY); Bojappa, Parvangada Ganapathy (Schenectady, NY); Kirkpatrick, Francis Lawrence (Galway, NY); Schotsch, Margaret Jones (Clifton Park, NY); Rajan, Rajiv (Guilderland, NY); Wei, Bin (Mechanicville, NY)

    2002-01-01T23:59:59.000Z

    A post-cast EDM process is used to remove material from the interior surface of a nozzle vane cavity of a turbine. A thin electrode is passed through the cavity between opposite ends of the nozzle vane and displaced along the interior nozzle wall to remove the material along a predetermined path, thus reducing the thickness of the wall between the cavity and the external surface of the nozzle. In another form, an EDM process employing a profile as an electrode is disposed in the cavity and advanced against the wall to remove material from the wall until the final wall thickness is achieved, with the interior wall surface being complementary to the profile surface.

  19. Fermion resonances on a thick brane with a piecewise warp factor

    SciTech Connect (OSTI)

    Li Haitao; Liu Yuxiao; Zhao Zhenhua; Guo Heng [Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000 (China)

    2011-02-15T23:59:59.000Z

    In this paper, we mainly investigate the problems of resonances of massive Kaluza-Klein (KK) fermions on a single scalar constructed thick brane with a piecewise warp factor matching smoothly. The distance between two boundaries and the other parameters are determined by one free parameter through three junction conditions. For the generalized Yukawa coupling {eta}{Psi}{phi}{sup k{Psi}} with odd k=1,3,5,..., the mass eigenvalue m, width {Gamma}, lifetime {tau}, and maximal probability P{sub max} of fermion resonances are obtained. Our numerical calculations show that the brane without internal structure also favors the appearance of resonant states for both left- and right-handed fermions. The scalar-fermion coupling and the thickness of the brane influence the resonant behaviors of the massive KK fermions.

  20. A Thickness of Stellar Disks of Edge-on Galaxies and Position of Their Truncation Radii

    E-Print Network [OSTI]

    A. V. Zasov; D. V. Bizyaev

    2002-12-13T23:59:59.000Z

    The relationship between the geometrical properties of stellar disks (a flatness and truncation radius) and the disk kinematics are considered for edge-on galaxies. It is shown that the observed thickness of the disks and the approximate constancy of their thickness along the radius well agrees with the condition of their marginal local gravitational stability. As a consequence, those galaxies whose disks are thinner should harbor more massive dark haloes. The correlation between the de-projeced central brightness of the disks and their flatness is found (the low surface brightness disks tend to be the thinniest ones). We also show that positions of observed photometrically determined truncation radii $R_{cut}$ for the stellar disks support the idea of marginal local gravitational stability of gaseous protodisks at $R =R_{cut}$, and hence the steepening of photometric profiles may be a result of too inefficient star formation beyond $R_{cut}$.

  1. Method for rapid, controllable growth and thickness, of epitaxial silicon films

    DOE Patents [OSTI]

    Wang, Qi (Littleton, CO); Stradins, Paul (Golden, CO); Teplin, Charles (Boulder, CO); Branz, Howard M. (Boulder, CO)

    2009-10-13T23:59:59.000Z

    A method of producing epitaxial silicon films on a c-Si wafer substrate using hot wire chemical vapor deposition by controlling the rate of silicon deposition in a temperature range that spans the transition from a monohydride to a hydrogen free silicon surface in a vacuum, to obtain phase-pure epitaxial silicon film of increased thickness is disclosed. The method includes placing a c-Si substrate in a HWCVD reactor chamber. The method also includes supplying a gas containing silicon at a sufficient rate into the reaction chamber to interact with the substrate to deposit a layer containing silicon thereon at a predefined growth rate to obtain phase-pure epitaxial silicon film of increased thickness.

  2. High efficiency proton beam generation through target thickness control in femtosecond laser-plasma interactions

    SciTech Connect (OSTI)

    Green, J. S., E-mail: james.green@stfc.ac.uk; Robinson, A. P. L.; Booth, N.; Carroll, D. C.; Rusby, D.; Wilson, L. [Central Laser Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX (United Kingdom); Dance, R. J. [York Plasma Institute, Department of Physics, University of York, York YO10 5DD (United Kingdom); Gray, R. J.; MacLellan, D. A.; McKenna, P. [SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom); Murphy, C. D. [SUPA, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ (United Kingdom)

    2014-05-26T23:59:59.000Z

    Bright proton beams with maximum energies of up to 30?MeV have been observed in an experiment investigating ion sheath acceleration driven by a short pulse (<50 fs) laser. The scaling of maximum proton energy and total beam energy content at ultra-high intensities of ?10{sup 21} W cm{sup ?2} was investigated, with the interplay between target thickness and laser pre-pulse found to be a key factor. While the maximum proton energies observed were maximised for ?m-thick targets, the total proton energy content was seen to peak for thinner, 500?nm, foils. The total proton beam energy reached up to 440 mJ (a conversion efficiency of 4%), marking a significant step forward for many laser-driven ion applications. The experimental results are supported by hydrodynamic and particle-in-cell simulations.

  3. Has a thick neutron skin in ${}^{208}$Pb been ruled out?

    E-Print Network [OSTI]

    Fattoyev, F J

    2013-01-01T23:59:59.000Z

    The Lead Radius Experiment (PREX) has provided the first model-independent evidence in favor of a neutron-rich skin in ${}^{208}$Pb. Although the error bars are large, the reported large central value of 0.33\\,fm is particularly intriguing. To test whether such a thick neutron-skin in ${}^{208}$Pb is already incompatible with laboratory experiments or astrophysical observations, we employ relativistic models with neutron-skin thickness in ${}^{208}$Pb ranging from 0.16 to 0.33 fm to compute ground state properties of finite nuclei, their collective monopole and dipole response, and mass-{\\sl vs}-radius relations for neutron stars. No compelling reason was found to rule out models with large neutron skins in ${}^{208}$Pb from the set of observables considered in this work.

  4. Atmospheric pressure spatial atomic layer deposition web coating with in situ monitoring of film thickness

    SciTech Connect (OSTI)

    Yersak, Alexander S.; Lee, Yung C. [Department of Mechanical Engineering, University of Colorado at Boulder, 1045 Regent Drive, 422 UCB, Boulder, Colorado 80309-0422 (United States); Spencer, Joseph A.; Groner, Markus D., E-mail: mgroner@aldnanosolutions.com [ALD NanoSolutions, Inc., 580 Burbank Street, Unit 100, Broomfield, Colorado 80020 (United States)

    2014-01-15T23:59:59.000Z

    Spectral reflectometry was implemented as a method for in situ thickness monitoring in a spatial atomic layer deposition (ALD) system. Al{sub 2}O{sub 3} films were grown on a moving polymer web substrate at 100?°C using an atmospheric pressure ALD web coating system, with film growth of 0.11–0.13?nm/cycle. The modular coating head design and the in situ monitoring allowed for the characterization and optimization of the trimethylaluminum and water precursor exposures, purge flows, and web speed. A thickness uniformity of ±2% was achieved across the web. ALD cycle times as low as 76?ms were demonstrated with a web speed of 1?m/s and a vertical gap height of 0.5?mm. This atmospheric pressure ALD system with in situ process control demonstrates the feasibility of low-cost, high throughput roll-to-roll ALD.

  5. Ferroelectric polymer-ceramic composite thick films for energy storage applications

    SciTech Connect (OSTI)

    Singh, Paritosh; Borkar, Hitesh; Singh, B. P.; Singh, V. N.; Kumar, Ashok, E-mail: ashok553@nplindia.org [CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012 (India)

    2014-08-15T23:59:59.000Z

    We have successfully fabricated large area free standing polyvinylidene fluoride -Pb(Zr{sub 0.52}Ti{sub 0.48})O{sub 3} (PVDF-PZT) ferroelectric polymer-ceramic composite (wt% 80–20, respectively) thick films with an average diameter (d) ?0.1 meter and thickness (t) ?50 ?m. Inclusion of PZT in PVDF matrix significantly enhanced dielectric constant (from 10 to 25 at 5 kHz) and energy storage capacity (from 11 to 14 J/cm{sup 3}, using polarization loops), respectively, and almost similar leakage current and mechanical strength. Microstructural analysis revealed the presence of ? and ? crystalline phases and homogeneous distribution of PZT crystals in PVDF matrix. It was also found that apart from the microcrystals, well defined naturally developed PZT nanocrystals were embedded in PVDF matrix. The observed energy density indicates immense potential in PVDF-PZT composites for possible applications as green energy and power density electronic elements.

  6. Evaluation of Cadmium-Free Thick Film Materials on Alumina Substrates

    SciTech Connect (OSTI)

    L. H. Perdieu

    2009-09-01T23:59:59.000Z

    A new cadmium-free material system was successfully evaluated for the fabrication of thick film hybrid microcircuits at Honeywell Federal Manufacturing & Technologies (FM&T). The characterization involved screen printing, drying and firing two groups of resistor networks which were made using the current material system and the cadmium-free material system. Electrical, environmental and adhesion tests were performed on both groups to determine the more suitable material system. Additionally, untrimmed test coupons were evaluated to further characterize the new materials. The cadmiumfree material system did as well or better than the current material system. Therefore, the new cadmium-free material system was approved for use on production thick film product.

  7. Infrared Imaging of the Nanometer-Thick Accumulation Layer in Organic Field-Effect Transistors

    E-Print Network [OSTI]

    Z. Q. Li; G. M. Wang; N. Sai; D. Moses; M. C. Martin; M. Di Ventra; A. J. Heeger; D. N. Basov

    2006-02-09T23:59:59.000Z

    We report on infrared (IR) spectro-microscopy of the electronic excitations in nanometer-thick accumulation layers in FET devices based on poly(3-hexylthiophene). IR data allows us to explore the charge injection landscape and uncovers the critical role of the gate insulator in defining relevant length scales. This work demonstrates the unique potential of IR spectroscopy for the investigation of physical phenomena at the nanoscale occurring at the semiconductor-insulator interface in FET devices.

  8. Unique Challenges Accompany Thick-Shell CdSe/nCdS (n > 10) Nanocrystal Synthesis

    SciTech Connect (OSTI)

    Guo, Y; Marchuk, K; Abraham, R; Sampat, S; Abraham, R.; Fang, N; Malko, AV; Vela, J

    2011-12-23T23:59:59.000Z

    Thick-shell CdSe/nCdS (n {ge} 10) nanocrystals were recently reported that show remarkably suppressed fluorescence intermittency or 'blinking' at the single-particle level as well as slow rates of Auger decay. Unfortunately, whereas CdSe/nCdS nanocrystal synthesis is well-developed up to n {le} 6 CdS monolayers (MLs), reproducible syntheses for n {ge} 10 MLs are less understood. Known procedures sometimes result in homogeneous CdS nucleation instead of heterogeneous, epitaxial CdS nucleation on CdSe, leading to broad and multimodal particle size distributions. Critically, obtained core/shell sizes are often below those desired. This article describes synthetic conditions specific to thick-shell growth (n {ge} 10 and n {ge} 20 MLs) on both small (sub2 nm) and large (>4.5 nm) CdSe cores. We find added secondary amine and low concentration of CdSe cores and molecular precursors give desired core/shell sizes. Amine-induced, partial etching of CdSe cores results in apparent shell-thicknesses slightly beyond those desired, especially for very-thick shells (n {ge} 20 MLs). Thermal ripening and fast precursor injection lead to undesired homogeneous CdS nucleation and incomplete shell growth. Core/shells derived from small CdSe (1.9 nm) have longer PL lifetimes and more pronounced blinking at single-particle level compared with those derived from large CdSe (4.7 nm). We expect our new synthetic approach will lead to a larger throughput of these materials, increasing their availability for fundamental studies and applications.

  9. Extension of the Si:C Stressor Thickness by Using Multiple ClusterCarbon Species

    SciTech Connect (OSTI)

    Sekar, Karuppanan; Krull, Wade [SemEquip, Inc. N. Billerica, MA, 01862 (United States)

    2011-01-07T23:59:59.000Z

    ClusterCarbon implantation is now well established as an attractive alternative for producing stress in advanced NMOS devices. ClusterCarbon has the advantage over monomer carbon implant in it's self-amorphization feature, eliminating the need for PAI implantation while producing highly substitutional carbon incorporation. To date, the limitation of this approach has been the high energy limit, due to the extraction limit of the available production tools for the preferred carbon species, which has been the C7Hx molecule. It is noted that the C7 species is produced by the breakup of the parent C14H14 molecule in the ion source. It is further noted that the preferred method of producing the Si:C stress layer is a multiple implant sequence with ClusterCarbon implants at various energies and doses designed to produce a carbon profile which is constant in-depth. The stressor thickness limit using C7 is known to be about 40 nm, which is less than the stressor thickness used in the conventional SiGe process for PMOS. In this work, it is shown that utilizing the C5 molecule which is also available from the breakup of C14H14 enables the stressor layer thickness to be extended to at least 60 nm, which is consistent with the conventional SiGe process. It will be shown that one additional C5 implant, performed after a standard C7 multiple implant sequence, can produce the extension of the stressor thickness while maintaining the flat depth profile. A detailed process characterization will be shown for this new process sequence.

  10. Investigation of arc length versus flange thickness while using an arc voltage controller

    SciTech Connect (OSTI)

    Daumeyer, G.J.

    1994-11-01T23:59:59.000Z

    An arc voltage controller (AVC) for gas tungsten arc welding will change arc length when flange thickness changes while all other variables, including AVC setting, are held constant. A procedure for calibrating an LVDT (linear variable displacement transducer) used for electrode assembly motion monitoring was proven for laboratory setups and special investigations. A partial characterization on the deadband and sensitivity control settings of the Cyclomatic AVC was completed.

  11. Correlation between AlPO4 nanoparticle coating thickness on LiCoO2 cathode and thermal stability

    E-Print Network [OSTI]

    Cho, Jaephil

    Correlation between AlPO4 nanoparticle coating thickness on LiCoO2 cathode and thermal stability cathode. They coated the cathode with AlPO4 nanoparticles prepared from water [13]. The AlPO4 coating solÁ/gel coating method, this nanoparticle coating led to the easy control of the coating thickness

  12. Thickness-dependent changes in the optical properties of PPV-and PF-based polymer light emitting diodes

    E-Print Network [OSTI]

    Carter, Sue

    the thickness-dependent optical properties of single layer polymer light emitting diodes for two materials, poly the electronic and optical properties of these materials in light emitting diode LED structures.2 OurThickness-dependent changes in the optical properties of PPV- and PF-based polymer light emitting

  13. Observations of ice thickness and frazil ice in the St. Lawrence Island polynya from satellite imagery, upward looking sonar, and

    E-Print Network [OSTI]

    Washington at Seattle, University of

    . The combination of the SAR imagery and ULS observations also allow measurement of the pack ice advection velocityObservations of ice thickness and frazil ice in the St. Lawrence Island polynya from satellite define a thermal ice thickness from the AVHRR retrieval of ice surface temperature combined

  14. Thick Braneworlds and the Gibbons-Kallosh-Linde No-go Theorem in the Gauss-Bonnet Framework

    E-Print Network [OSTI]

    M. Dias; J. M. Hoff da Silva; Roldao da Rocha

    2015-04-16T23:59:59.000Z

    The sum rules related to thick braneworlds are constructed, in order to encompass Gauss-Bonnet terms. The generation of thick branes is hence proposed in a periodic extra dimension scenario, what circumvents the Gibbons-Kallosh-Linde no-go theorem in this context.

  15. Law-Aware Access Control and its Information Model

    E-Print Network [OSTI]

    Stieghahn, Michael

    2010-01-01T23:59:59.000Z

    Cross-border access to a variety of data such as market information, strategic information, or customer-related information defines the daily business of many global companies, including financial institutions. These companies are obliged by law to keep a data processing legal for all offered services. They need to fulfill different security objectives specified by the legislation. Therefore, they control access to prevent unauthorized users from using data. Those security objectives, for example confidentiality or secrecy, are often defined in the eXtensible Access Control Markup Language that promotes interoperability between different systems. In this paper, we show the necessity of incorporating the requirements of legislation into access control. Based on the work flow in a banking scenario we describe a variety of available contextual information and their interrelations. Different from other access control systems our main focus is on law-compliant cross-border data access. By including legislation dir...

  16. Effect of Substrate Thickness on Oxide Scale Spallation for Solid Oxide Fuel Cells

    SciTech Connect (OSTI)

    Liu, Wenning N.; Sun, Xin; Stephens, Elizabeth V.; Khaleel, Mohammad A.

    2011-07-01T23:59:59.000Z

    In this paper, the effect of the ferritic substrate's thickness on the delamination/spallation of the oxide scale was investigated experimentally and numerically. At the high-temperature oxidation environment of solid oxide fuel cells (SOFCs), a combination of growth stress with thermal stresses may lead to scale delamination/buckling and eventual spallation during SOFC stack cooling, even leading to serious degradation of cell performance. The growth stress is induced by the growth of the oxide scale on the scale/substrate interface, and thermal stress is induced by a mismatch of the coefficient of thermal expansion between the oxide scale and the substrate. The numerical results show that the interfacial shear stresses, which are the driving force of scale delamination between the oxide scale and the ferritic substrate, increase with the growth of the oxide scale and also with the thickness of the ferritic substrate; i.e., the thick ferritic substrate can easily lead to scale delamination and spallation. Experimental observation confirmed the predicted results of the delamination and spallation of the oxide scale on the ferritic substrate.

  17. The effect of mix on capsule yields as a function of shell thickness and gas fill

    SciTech Connect (OSTI)

    Bradley, P. A., E-mail: pbradley@lanl.gov [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2014-06-15T23:59:59.000Z

    An investigation of direct drive capsules with different shell thicknesses and gas fills was conducted to examine the amount of shock induced (Richtmyer-Meshkov) mix versus Rayleigh-Taylor mix from deceleration of the implosion. The RAGE (Eulerian) code with a turbulent mix model was used to model these capsules for neutron yields along with time-dependent mix amounts. The amount of Richtmyer-Meshkov induced mix from the shock breaking out of the shell is about 0.1??g (0.15??m of shell material), while the Rayleigh-Taylor mix is of order 1??g and determines the mixed simulation yield. The simulations were able to calculate a yield over mix (YOM) ratio (experiment/mix simulation) between 0.5 and 1.0 for capsules with shell thicknesses ranging from 7.5 to 20??m and with gas fills between 3.8 and 20?atm of D{sub 2} or DT. The simulated burn averaged T{sub ion} values typically lie with 0.5?keV of the data, which is within the measurement error. For capsules with shell thicknesses >25??m, the YOM values drop to 0.10?±?0.05, suggesting that some unmodeled effect needs to be accounted for in the thickest capsules.

  18. Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions

    SciTech Connect (OSTI)

    Chen, Xiaodong [The State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China); Yang, Vigor, E-mail: vigor.yang@aerospace.gatech.edu [School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150 (United States)

    2014-07-15T23:59:59.000Z

    In numerical simulations of multi-scale, multi-phase flows, grid refinement is required to resolve regions with small scales. A notable example is liquid-jet atomization and subsequent droplet dynamics. It is essential to characterize the detailed flow physics with variable length scales with high fidelity, in order to elucidate the underlying mechanisms. In this paper, two thickness-based mesh refinement schemes are developed based on distance- and topology-oriented criteria for thin regions with confining wall/plane of symmetry and in any situation, respectively. Both techniques are implemented in a general framework with a volume-of-fluid formulation and an adaptive-mesh-refinement capability. The distance-oriented technique compares against a critical value, the ratio of an interfacial cell size to the distance between the mass center of the cell and a reference plane. The topology-oriented technique is developed from digital topology theories to handle more general conditions. The requirement for interfacial mesh refinement can be detected swiftly, without the need of thickness information, equation solving, variable averaging or mesh repairing. The mesh refinement level increases smoothly on demand in thin regions. The schemes have been verified and validated against several benchmark cases to demonstrate their effectiveness and robustness. These include the dynamics of colliding droplets, droplet motions in a microchannel, and atomization of liquid impinging jets. Overall, the thickness-based refinement technique provides highly adaptive meshes for problems with thin regions in an efficient and fully automatic manner.

  19. Thickness controlled sol-gel silica films for plasmonic bio-sensing devices

    SciTech Connect (OSTI)

    Figus, Cristiana, E-mail: cristiana.figus@dsf.unica.it; Quochi, Francesco, E-mail: cristiana.figus@dsf.unica.it; Artizzu, Flavia, E-mail: cristiana.figus@dsf.unica.it; Saba, Michele, E-mail: cristiana.figus@dsf.unica.it; Marongiu, Daniela, E-mail: cristiana.figus@dsf.unica.it; Mura, Andrea; Bongiovanni, Giovanni [Dipartimento di Fisica - University of Cagliari, S.P. Km 0.7, I-09042 Monserrato (Canada) (Italy); Floris, Francesco; Marabelli, Franco; Patrini, Maddalena; Fornasari, Lucia [Dipartimento di Fisica - University of Pavia, Via Agostino Bassi 6, I-27100 Pavia (PV) (Italy); Pellacani, Paola; Valsesia, Andrea [Plasmore S.r.l. -Via Grazia Deledda 4, I-21020 Ranco (Vatican City State, Holy See) (Italy)

    2014-10-21T23:59:59.000Z

    Plasmonics has recently received considerable interest due to its potentiality in many fields as well as in nanobio-technology applications. In this regard, various strategies are required for modifying the surfaces of plasmonic nanostructures and to control their optical properties in view of interesting application such as bio-sensing, We report a simple method for depositing silica layers of controlled thickness on planar plasmonic structures. Tetraethoxysilane (TEOS) was used as silica precursor. The control of the silica layer thickness was obtained by optimizing the sol-gel method and dip-coating technique, in particular by properly tuning different parameters such as pH, solvent concentration, and withdrawal speed. The resulting films were characterized via atomic force microscopy (AFM), Fourier-transform (FT) spectroscopy, and spectroscopic ellipsometry (SE). Furthermore, by performing the analysis of surface plasmon resonances before and after the coating of the nanostructures, it was observed that the position of the resonance structures could be properly shifted by finely controlling the silica layer thickness. The effect of silica coating was assessed also in view of sensing applications, due to important advantages, such as surface protection of the plasmonic structure.

  20. A reliable control system for measurement on film thickness in copper chemical mechanical planarization system

    SciTech Connect (OSTI)

    Li, Hongkai; Qu, Zilian; Zhao, Qian; Tian, Fangxin; Zhao, Dewen; Meng, Yonggang; Lu, Xinchun [State Key Laboratory of Tribology, Tsinghua University, Beijing 100084 (China)] [State Key Laboratory of Tribology, Tsinghua University, Beijing 100084 (China)

    2013-12-15T23:59:59.000Z

    In recent years, a variety of film thickness measurement techniques for copper chemical mechanical planarization (CMP) are subsequently proposed. In this paper, the eddy-current technique is used. In the control system of the CMP tool developed in the State Key Laboratory of Tribology, there are in situ module and off-line module for measurement subsystem. The in situ module can get the thickness of copper film on wafer surface in real time, and accurately judge when the CMP process should stop. This is called end-point detection. The off-line module is used for multi-points measurement after CMP process, in order to know the thickness of remained copper film. The whole control system is structured with two levels, and the physical connection between the upper and the lower is achieved by the industrial Ethernet. The process flow includes calibration and measurement, and there are different algorithms for two modules. In the process of software development, C++ is chosen as the programming language, in combination with Qt OpenSource to design two modules’ GUI and OPC technology to implement the communication between the two levels. In addition, the drawing function is developed relying on Matlab, enriching the software functions of the off-line module. The result shows that the control system is running stably after repeated tests and practical operations for a long time.

  1. Localization and mass spectra of fermions on symmetric and asymmetric thick branes

    SciTech Connect (OSTI)

    Liu Yuxiao; Fu, C.-E; Zhao Li; Duan Yishi [Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000 (China)

    2009-09-15T23:59:59.000Z

    A three-parameter (positive odd integer s, thickness factor {lambda}, and asymmetry factor a) family of asymmetric thick brane solutions in five dimensions were constructed from a two-parameter (s and {lambda}) family of symmetric ones in by R. Guerrero, R. O. Rodriguez, and R. Torrealba in [Phys. Rev. D 72, 124012 (2005).]. The values s=1 and s{>=}3 correspond to single branes and double branes, respectively. These branes have very rich inner structure. In this paper, by presenting the mass-independent potentials of Kaluza-Klein (KK) modes in the corresponding Schroedinger equations, we investigate the localization and mass spectra of fermions on the symmetric and asymmetric thick branes in an anti-de Sitter background. In order to analyze the effect of gravity-fermion interaction (i.e., the effect of the inner structure of the branes) and scalar-fermion interaction to the spectrum of fermion KK modes, we consider three kinds of typical kink-fermion couplings. The spectra of left chiral fermions for these couplings consist of a bound zero mode and a series of gapless continuous massive KK modes, some discrete bound KK modes including zero mode (exist mass gaps), and a series of continuous massive KK modes, infinite discrete bound KK modes, respectively. The structures of the spectra are investigated in detail.

  2. Improved gas sensing and dielectric properties of Fe doped hydroxyapatite thick films: Effect of molar concentrations

    SciTech Connect (OSTI)

    Mene, Ravindra U. [PDEA's, Annasaheb Waghire College of Science, Arts and Commerce, Otur 412409, M.S. (India); School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, M.S. (India); Mahabole, Megha P. [School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, M.S. (India); Mohite, K.C. [Haribhai. V. Desai College, Pune 411002, M.S. (India); Khairnar, Rajendra S., E-mail: rskhairnarsps@gmail.com [School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, M.S. (India)

    2014-02-01T23:59:59.000Z

    Highlights: • We report improved gas sensing and dielectric characteristics of Fe ion exchanged HAp films. • Fe doped HAp film shows maximum gas response at relatively lower temperature. • Response and gas uptake capacity of sensors is improved for appropriate amount of Fe ions in HAp matrix. • Fe-HAp films exhibit remarkable improvement in dielectric properties compared to pure HAp. • Fe doped HAp films show significant improvement in gas sensing as well as in dielectric properties. - Abstract: In the present work Fe doped hydroxyapatite (Fe-HAp) thick films has been successfully utilized to improve the gas sensing as well as its dielectric properties. Initially, HAp nano powder is synthesized by chemical precipitation process and later on Fe ions are doped in HAp by ion exchange process. Structural and morphological modifications are observed by means of X-ray diffraction and scanning electron microscopy analysis. The sensing parameters such as operating temperature, response/recovery time and gas uptake capacity are experimentally determined. The Fe-HAp (0.05 M) film shows improved CO and CO{sub 2} gas sensing capacity at lower operating temperature compared to pure HAp. Moreover, variation of dielectric constant and dielectric loss for pure and Fe-HAp thick films are studied as a function of frequency in the range of 10 Hz–1 MHz. The study reveals that Fe doped HAp thick films improve the sensing and dielectric characteristics as compared to pure HAp.

  3. Neutron-skin thickness from the study of the anti-analog giant dipole resonance

    E-Print Network [OSTI]

    A. Krasznahorkay; L. Stuhl; M. Csatlós; A. Algora; J. Gulyás; J. Timár; N. Paar; D. Vretenar; K. Boretzky; M. Heil; Yu. A. Litvinov; D. Rossi; C. Scheidenberger; H. Simon; H. Weick; A. Bracco; S. Brambilla; N. Blasi; F. Camera; A. Giaz; B. Million; L. Pellegri; S. Riboldi; O. Wieland; S. Altstadt; M. Fonseca; J. Glorius; K. Göbel; T. Heftrich; A. Koloczek; S. Kräckmann; C. Langer; R. Plag; M. Pohl; G. Rastrepina; R. Reifarth; S. Schmidt; K. Sonnabend; M. Weigand; M. N. Harakeh; N. Kalantar-Nayestanaki; C. Rigollet; S. Bagchi; M. A. Najafi; T. Aumann; L. Atar; M. Heine; M. Holl; A. Movsesyan; P. Schrock; V. Volkov; F. Wamers; E. Fiori; B. Löher; J. Marganiec; D. Savran; H. T. Johansson; P. Diaz Fernández; U. Garg; D. L. Balabanski

    2012-06-20T23:59:59.000Z

    The gamma-decay of the anti-analog of the giant dipole resonance (AGDR) has been measured to the isobaric analog state excited in the p(124Sn,n) reaction at a beam energy of 600 MeV/nucleon. The energy of the transition was also calculated with state-of-the-art self-consistent random-phase approximation (RPA) and turned out to be very sensitive to the neutron-skin thickness (\\DeltaR_(pn)). By comparing the theoretical results with the measured one, the \\DeltaR_(pn) value for 124Sn was deduced to be 0.175 \\pm 0.048 fm, which agrees well with the previous results. The energy of the AGDR measured previously for ^(208)Pb was also used to determine the \\DeltaR_(pn) for ^(208)Pb. In this way a very precise \\DeltaR_(pn) = 0.181 \\pm 0.031 neutron-skin thickness has been obtained for 208Pb. The present method offers new possibilities for measuring the neutron-skin thicknesses of very exotic isotopes.

  4. Electrocaloric properties of ferroelectric-paraelectric superlattices controlled by the thickness of paraelectric layer in a wide temperature range

    SciTech Connect (OSTI)

    Ma, D. C.; Lin, S. P. [Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Guangzhou 510275 (China); Micro and Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China); Chen, W. J.; Zheng, Yue, E-mail: zhengy35@mail.sysu.edu.cn; Xiong, W. M. [State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275 (China); Micro and Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China); Wang, Biao, E-mail: wangbiao@mail.sysu.edu.cn [State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275 (China)

    2014-10-15T23:59:59.000Z

    As functions of the paraelectric layer thickness, misfit strain and temperature, the electrocaloric properties of ferroelectric-paraelectric superlattices are investigated using a time-dependent Ginzburg-Landau thermodynamic model. Ferroelectric phase transition driven by the relative thickness of the superlattice is found to dramatically impact the electrocaloric response. Near the phase transition temperature, the magnitude of the electrocaloric effect is maximized and shifted to lower temperatures by increasing the relative thickness of paraelectric layer. Theoretical calculations also imply that the electrocaloric effect of the superlattices depends not only on the relative thickness of paraelectric layer but also on misfit strain. Furthermore, control of the relative thickness of paraelectric layer and the misfit strain can change availably both the magnitude and the temperature sensitivity of the electrocaloric effect, which suggests that ferroelectric-paraelectric superlattices may be promising candidates for use in cooling devices in a wide temperature range.

  5. Direct memory access transfer completion notification

    DOE Patents [OSTI]

    Chen, Dong (Croton on Hudson, NY); Giampapa, Mark E. (Irvington, NY); Heidelberger, Philip (Cortlandt Manor, NY); Kumar, Sameer (White Plains, NY); Parker, Jeffrey J. (Rochester, MN); Steinmacher-Burow, Burkhard D. (Esslingen, DE); Vranas, Pavlos (Danville, CA)

    2010-07-27T23:59:59.000Z

    Methods, compute nodes, and computer program products are provided for direct memory access (`DMA`) transfer completion notification. Embodiments include determining, by an origin DMA engine on an origin compute node, whether a data descriptor for an application message to be sent to a target compute node is currently in an injection first-in-first-out (`FIFO`) buffer in dependence upon a sequence number previously associated with the data descriptor, the total number of descriptors currently in the injection FIFO buffer, and the current sequence number for the newest data descriptor stored in the injection FIFO buffer; and notifying a processor core on the origin DMA engine that the message has been sent if the data descriptor for the message is not currently in the injection FIFO buffer.

  6. Instruction sets for Parallel Random Access Machines

    SciTech Connect (OSTI)

    Trahan, J.L.

    1988-01-01T23:59:59.000Z

    The computational powers of time-bounded Parallel Random Access Machines (PRAMs) with different instruction sets are compared. A basic PRAM can perform the following operations in unit-time: addition, subtraction, Boolean operations, comparisons, and indirect addressing. Multiple processors may concurrently read and concurrently write a single cell. This thesis establishes that the class of languages accepted in polynomial time on a PRAM(*, {up arrow}, {down arrow}) contains the class of languages accepted in exponential time on a nondeterministic Turing machine (NEXPTIME) and is contained in the class of languages accepted in exponential space on a Turing machine. Efficient simulations are presented of PRAMs with enhanced instruction sets by sequential RAMs with the same instruction sets; also simulations of probabilistic PRAMs by deterministic PRAMs, using parallelism to replace randomness. Also given are simulations of PRAM(op)s by PRAMs, where both the simulated machine and the simulating machine are exclusive-read, exclusive-write machines.

  7. Remote direct memory access over datagrams

    DOE Patents [OSTI]

    Grant, Ryan Eric; Rashti, Mohammad Javad; Balaji, Pavan; Afsahi, Ahmad

    2014-12-02T23:59:59.000Z

    A communication stack for providing remote direct memory access (RDMA) over a datagram network is disclosed. The communication stack has a user level interface configured to accept datagram related input and communicate with an RDMA enabled network interface card (NIC) via an NIC driver. The communication stack also has an RDMA protocol layer configured to supply one or more data transfer primitives for the datagram related input of the user level. The communication stack further has a direct data placement (DDP) layer configured to transfer the datagram related input from a user storage to a transport layer based on the one or more data transfer primitives by way of a lower layer protocol (LLP) over the datagram network.

  8. Low leakage Ru-strontium titanate-Ru metal-insulator-metal capacitors for sub-20?nm technology node in dynamic random access memory

    SciTech Connect (OSTI)

    Popovici, M., E-mail: Mihaela.Ioana.Popovici@imec.be; Swerts, J.; Redolfi, A.; Kaczer, B.; Aoulaiche, M.; Radu, I.; Clima, S.; Everaert, J.-L.; Van Elshocht, S.; Jurczak, M. [Imec, Leuven 3001 (Belgium)

    2014-02-24T23:59:59.000Z

    Improved metal-insulator-metal capacitor (MIMCAP) stacks with strontium titanate (STO) as dielectric sandwiched between Ru as top and bottom electrode are shown. The Ru/STO/Ru stack demonstrates clearly its potential to reach sub-20?nm technology nodes for dynamic random access memory. Downscaling of the equivalent oxide thickness, leakage current density (J{sub g}) of the MIMCAPs, and physical thickness of the STO have been realized by control of the Sr/Ti ratio and grain size using a heterogeneous TiO{sub 2}/STO based nanolaminate stack deposition and a two-step crystallization anneal. Replacement of TiN with Ru as both top and bottom electrodes reduces the amount of electrically active defects and is essential to achieve a low leakage current in the MIM capacitor.

  9. Public Roundtable- Data Access and Privacy Issues Related to...

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

    to Smart Grid Technologies Public Roundtable- Data Access and Privacy Issues Related to Smart Grid Technologies More Documents & Publications Testimony Public Meeting Transcript:...

  10. access spatial methods: Topics by E-print Network

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

    4 The mqr-tree: improving upon a 2-dimensional spatial access method Marc Moreau, Wendy Osborn Mathematics Websites Summary: , overcoverage and overlap than is necessary. The...

  11. access policies tutela: Topics by E-print Network

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

    os estudantes lembraram a Jos Ferreira Gomes Instituto de Sistemas e Robotica 3 Policy 3507 Information Technology Accessibility 1 OLD DOMINION UNIVERSITY Computer...

  12. Boyer-Tillamook Access Road Improvement Project 1 Finding of...

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

    dangerous. In addition, improvements to access road stream crossings would facilitate fish passage. Construction is expected to last from 2 to 4 months, although work may need to...

  13. V-106: Citrix Access Gateway Unspecified Security Bypass Vulnerability

    Broader source: Energy.gov [DOE]

    A vulnerability has been reported in Citrix Access Gateway, which can be exploited by malicious people to bypass certain security restrictions.

  14. access industry profile: Topics by E-print Network

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

    Hired can help you build a career Access information about713 Complete Your Profile -- Logging into Huskies Get Hired Log into your Huskies Get Hired account...

  15. access communication datac: Topics by E-print Network

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

    Open learner models, communication, multiple users. 1 Introduction Open learner models (OLM) are learner models that are accessible Bull, Susan 111 Channel modelling and relay for...

  16. access memory devices: Topics by E-print Network

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

    and Information Sciences Websites Summary: magnetic disks, such as lower access latency, lower power consumption, lack of noise, and shock resistance of traditional...

  17. access devices evaluation: Topics by E-print Network

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

    unnecessarily long query processing times, since web accesses exhibit high and variable latency. Fortunately, web sources can be probed in parallel, and each source can typically...

  18. NBP RFI: Data Access, Third Party Use, and Privacy- Comments...

    Energy Savers [EERE]

    Use, and Privacy- Comments of Oncor Electric Deliverty Company LLC NBP RFI: Data Access, Third Party Use, and Privacy- Comments of Oncor Electric Deliverty Company LLC Oncor...

  19. Accessing Low-Cost Capital Through Securitization (Poster)

    SciTech Connect (OSTI)

    Mendelsohn, M.

    2014-10-01T23:59:59.000Z

    Poster for Solar Power International conference presents information on NREL's effort to open capital markets through securitization via Solar Access to Public Capital (SAPC) working group's efforts.

  20. accessible surface area: Topics by E-print Network

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

    INFORMATION supervisor, UCPD and the issuing department's Access Controller. A UC police report reference number or card key to anyone, unless told to do so by the issuing...

  1. access program eap: Topics by E-print Network

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

    INFORMATION supervisor, UCPD and the issuing department's Access Controller. A UC police report reference number or card key to anyone, unless told to do so by the issuing...

  2. accessible surface areas: Topics by E-print Network

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

    INFORMATION supervisor, UCPD and the issuing department's Access Controller. A UC police report reference number or card key to anyone, unless told to do so by the issuing...

  3. access programs evidence: Topics by E-print Network

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

    INFORMATION supervisor, UCPD and the issuing department's Access Controller. A UC police report reference number or card key to anyone, unless told to do so by the issuing...

  4. Using Digital Technology to Access And Store African Art

    E-Print Network [OSTI]

    Blake, Edwin

    Using Digital Technology to Access And Store African Art Gary Marsden, Katherine Malan & Edwin Blake Collaborative Visual Computing Group, Department of Computer Science, University of Cape Town +27

  5. Microsoft Word - Accessing Gulf Resources article.doc

    Office of Environmental Management (EM)

    necessary to efficiently access and support this very significant amount of energy production, given the growing challenges that coastal areas are facing?" My prediction is...

  6. accessible sites application: Topics by E-print Network

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

    Websites Summary: protected by the same origin policy. This opens the door to fracking attacks, which allow foreign-origin Web and directly access device resources....

  7. access control framework: Topics by E-print Network

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

    Websites Summary: protected by the same origin policy. This opens the door to fracking attacks, which allow foreign-origin Web and directly access device resources....

  8. access delay applications: Topics by E-print Network

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

    Websites Summary: protected by the same origin policy. This opens the door to fracking attacks, which allow foreign-origin Web and directly access device resources....

  9. access to information: Topics by E-print Network

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

    the Protocol of Corporate Governance in the Public Sector (1997), the Public Finance Management Act of 1999 Jarrett, Thomas H. 2 Access to Geographic Information: Openness versus...

  10. aps collaborative access: Topics by E-print Network

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

    Access Model for Shared Virtual Environments Steve Pettifer and James Marsh of computer graphics techniques, and evolve more meaningful content, issues such as ownership' or...

  11. accelerating access initiative: Topics by E-print Network

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

    nuovo database 12;26-04-2010 2 7 programma di gestione di database (cio un DBMS) Access offre: un supporto transazionale limitato Anselma, Luca 455 Dynamical...

  12. accessibility global gateway: Topics by E-print Network

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

    nuovo database 12;26-04-2010 2 7 programma di gestione di database (cio un DBMS) Access offre: un supporto transazionale limitato Anselma, Luca 389 RESEARCH...

  13. arterial access site: Topics by E-print Network

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

    nuovo database 12;26-04-2010 2 7 programma di gestione di database (cio un DBMS) Access offre: un supporto transazionale limitato Anselma, Luca 225 Site: a...

  14. University of Utah Registrar's Office Security Access Deletion Form

    E-Print Network [OSTI]

    Feschotte, Cedric

    Access Student Records Web Reports DARS (Class rolls, picture rosters, etc.) Comments/Additional Information FOR REGISTRAR'S OFFICE USE ONLY ACS Administrator Date Student Systems Administrator Date DARS

  15. Application for Permit to Construct Access Driveway Facilities...

    Open Energy Info (EERE)

    Application for Permit to Construct Access Driveway Facilities on Highway Right of Way DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link...

  16. U-144:Juniper Secure Access Input Validation Flaw Permits Cross...

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

    user's cookies (including authentication cookies), if any, associated with the site running the VPN management interface, access data recently submitted by the target user via...

  17. FACT SHEET: SOLAR AND LED ENERGY ACCESS PROGRAM

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

    billion people current lacking access to modern energy - simultaneously alleviating poverty, improving human health, and reducing emissions of greenhouse gases. The Solar and...

  18. Increasing Community Access to Solar: Designing and Developing...

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

    Increasing Community Access to Solar: Designing and Developing a Shared Solar Photovoltaic System Updated guide highlights project models, policies, and financing Community shared...

  19. access ad hoc: Topics by E-print Network

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

    the channel utilization of multihop wireless networks. Keywords: Mobile ad hoc networks, medium access control, this is not necessarily true in a mobile ad hoc network (MANET)...

  20. access control mechanism: Topics by E-print Network

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

    the channel utilization of multihop wireless networks. Keywords: Mobile ad hoc networks, medium access control, this is not necessarily true in a mobile ad hoc network (MANET)...

  1. arabidopsis thaliana accessions: Topics by E-print Network

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

    occurring variation is an important alternative resource for functional genetics and genomics research.; In a well-characterized collection of Arabidopsis thaliana accessions, we...

  2. A Utility Regulator's Guide to Data Access for Commercial Building...

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

    This guide offers policy options and considerations to state utility commissions in providing access to energy use data to help commercial customers manage energy costs through...

  3. access health corp: Topics by E-print Network

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

    Request Broker Architecture specifies a system which - provides interoperability 6 Health Care Access to and Utilization of Health Care CiteSeer Summary: Core item-...

  4. Microsoft Word - CX-Ross-Lexington_access_road_WEB.doc

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

    Darin Bowman Project Manager - TELF-TPP-3 Proposed Action: Access road repair including reconstructing, grading, and shaping of roads, placing and compacting of rock surfacing,...

  5. U-211: EMC Celerra/VNX/VNXe Access Control Bug Lets Remote Authenticated Users Access Files/Directories

    Broader source: Energy.gov [DOE]

    A vulnerability was reported in EMC Celerra/VNX/VNXe. A remote authenticated user can access files and directories on the target file system.

  6. In-situ Measurement of Low-Z Material Coating Thickness on High Z Substrate for Tokamaks

    SciTech Connect (OSTI)

    Mueller, D [PPPL; Roquemore, A L [PPPL; Jaworski, M [PPPL; Skinner, C H [PPPL; Miller, J [PPPL; Creely, A [PPPL; Raman, P [2University of Illinois, Champaign, IL, USA; Ruzic, D [2University of Illinois, Champaign, IL, USA

    2014-07-01T23:59:59.000Z

    Rutherford backscattering (RBS) of energetic particles can be used to determine the thickness of a coating of a low-Z material over a heavier substrate. Simulations indicate that 5 MeV alpha particles from an Am source can be used to measure the thickness of a Li coating on Mo tiles between 0.5 and 15 ?m thick. Using a 0.1 mCi source, a thickness measurement can be accomplished in 2 hours of counting. This technique could be used to measure any thin, low-Z material coating (up to 1 mg/cm^2 thick) on a high-Z substrate, such as Be on W, B on Mo, or Li on Mo. By inserting a source and detector on a moveable probe, this technique could be used to provide an in situ measurement of the thickness of Li coating on NSTX-U Mo tiles. A test stand with an alpha source and an annular solid-state detector was used to investigate the measurable range of low-Z material thicknesses on Mo tiles.

  7. Carbon, nitrogen and $\\alpha$-element abundances determine the formation sequence of the Galactic thick and thin disks

    E-Print Network [OSTI]

    Masseron, T

    2015-01-01T23:59:59.000Z

    Using the DR12 public release of APOGEE data, we show that thin and thick disk separate very well in the space defined by [$\\alpha$/Fe], [Fe/H] and [C/N]. Thick disk giants have both higher [C/N] and higher [$\\alpha$/Fe] than do thin disk stars with similar [Fe/H]. We deduce that the thick disk is composed of lower mass stars than the thin disk. Considering the fact that at a given metallicity there is a one-to-one relation between stellar mass and age, we are then able to infer the chronology of disk formation. Both the thick and the thin disks - defined by [$\\alpha$/Fe] -- converge in their dependance on [C/N] and [C+N/Fe] at [Fe/H]$\\approx$-0.7. We conclude that 1) the majority of thick disk stars formed earlier than did the thin disk stars 2) the formation histories of the thin and thick disks diverged early on, even when the [Fe/H] abundances are similar 3) that the star formation rate in the thin disk has been lower than in the thick disk, at all metallicities. Although these general conclusions remain ...

  8. Access Control in Publicly Verifiable Outsourced Computation James Alderman

    E-Print Network [OSTI]

    Publicly Verifiable Outsourced Computation (PVC) allows devices with restricted re- sources to delegate. Thus there is a need to apply access control mechanisms in PVC environments. In this work, we define a new framework for Publicly Verifiable Outsourced Computation with Access Control (PVC-AC) that applies

  9. Capacity Building on Access to Energy in Africa: Final Report

    E-Print Network [OSTI]

    Capacity Building on Access to Energy in Africa: Final Report Danish Support to EUEI Facilitation from African partner organisations and individuals Title: Capacity Building on Access to Energy (Danish Ministry of Foreign Affairs) Cover: Solar home system installed at house near Chipata, Eastern

  10. Towards an Accessible Web through Semantic Web Standards

    E-Print Network [OSTI]

    Watt, Stephen M.

    1 Towards an Accessible Web through Semantic Web Standards Clare M. So, Mark Perry and Stephen M Abstract-- Making information on the Web accessible to all people, including to those having special needs than actual semantic content that is rendered by alternative technologies. To make the Web more

  11. Towards an Accessible Web through Semantic Web Standards

    E-Print Network [OSTI]

    Perry, Mark

    Towards an Accessible Web through Semantic Web Standards Clare M. So, Mark Perry and Stephen M Abstract-- Making information on the Web accessible to all people, including to those having special needs than actual semantic content that is rendered by alternative technologies. To make the Web more

  12. POLICY REGARDING SERVICE ANIMAL ACCESS TO UNIVERSITY OF GEORGIA FACILITIES,

    E-Print Network [OSTI]

    Arnold, Jonathan

    POLICY REGARDING SERVICE ANIMAL ACCESS TO UNIVERSITY OF GEORGIA FACILITIES, PROGRAMS, SERVICES AND ACTIVITIES This policy ("Policy") is to implement federal and state laws regarding access for service animals, for purposes of this Policy, "Service Animals" are collectively defined to include those that are defined

  13. access control policy: Topics by E-print Network

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

    access control policy First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Resiliency Policies in Access...

  14. Regulating Wireless Access Pricing Kwanfong Leung and Jianwei Huang

    E-Print Network [OSTI]

    Huang, Jianwei

    user prices change with network's market shares and bandwidth costs. When such direct control change with the network costs and market shares. · Social optimal access pricing: We showRegulating Wireless Access Pricing Kwanfong Leung and Jianwei Huang Department of Information

  15. A Resources Virtualization Approach Supporting Uniform Access to Heterogeneous

    E-Print Network [OSTI]

    Keinan, Alon

    A Resources Virtualization Approach Supporting Uniform Access to Heterogeneous Grid Resources1 of resources such as computing resources, storage resources, instrument resources, data resources, etc. However, because of the differences of formats, descriptions, structures, and access modes of these resources, grid

  16. access hiv-1 test: Topics by E-print Network

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

    access hiv-1 test First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 REVIEW Open Access The macrophage in...

  17. Papers from the 2008 Joint Session Phenomenal and Access Consciousness

    E-Print Network [OSTI]

    Block, Ned

    Papers from the 2008 Joint Session Phenomenal and Access Consciousness Ned Block and Cynthia Mac.1111/j.1467-9264.2008.00247.x CONSCIOUSNESS AND COGNITIVE ACCESS NED BLOCK This article concerns presented here derives from Block (2007a, 2007b, forthcoming). #12;NED BLOCK290 ©2008 The Aristotelian

  18. UNLV OFFICE OF INFORMATION TECHNOLOGY NETWORK ACCESS COMPLIANCE POLICY

    E-Print Network [OSTI]

    Hemmers, Oliver

    UNLV OFFICE OF INFORMATION TECHNOLOGY NETWORK ACCESS COMPLIANCE POLICY RESPONSIBLE ADMINISTRATOR: · Create a secure network environment for UNLV's computer and network resources by establishing different levels of network access to meet the needs of UNLV staff and students as well as the general public

  19. Announced Dynamic Access Probability protocol for next generation wireless networks

    E-Print Network [OSTI]

    Levy, Hanoch

    Announced Dynamic Access Probability protocol for next generation wireless networks Z. NAOR #3; H probability. Keywords: wireless networks, multiple access, MAC #3; naorz@post.tau.ac.il y hanoch@cs.tau.ac.il 1 #12; 1 Introduction Wireless networks are rapidly expanding. Future satellite-based networks

  20. Negotiating Multichannel Sensing and Access In Cognitive Radio Wireless Networks

    E-Print Network [OSTI]

    Islam, M. Saif

    Negotiating Multichannel Sensing and Access In Cognitive Radio Wireless Networks Hua Liu§, Bhaskar the coordination among secondary users on channel sensing strategy in cognitive wireless networks. In this problem and potentially access in a cognitive radio network? If users may have a potentially different valuation of each