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Sample records for tx deepwater permanent

  1. Deepwater Horizon Natural Resource Damage Assessment Deepwater Horizon Trustees Announce Agreement in Principle for

    E-Print Network [OSTI]

    ) ------- The Deepwater Horizon oil spill Natural Resource Damage Assessment Trustees (Trustees) today announced another Horizon oil spill Natural Resource Damage Assessment and restoration will continue until the publicDeepwater Horizon Natural Resource Damage Assessment Deepwater Horizon Trustees Announce Agreement

  2. EIS-0412: TX Energy, LLC, Industrial Gasification Facility Near...

    Office of Environmental Management (EM)

    2: TX Energy, LLC, Industrial Gasification Facility Near Beaumont, TX EIS-0412: TX Energy, LLC, Industrial Gasification Facility Near Beaumont, TX February 18, 2009 EIS-0412:...

  3. The Path to Disaster The Deepwater Horizon

    E-Print Network [OSTI]

    Pym, David J.

    was not disconnected · The escaping gas ignited · 11 dead · The drilling rig Deepwater Horizon sank after 2 days #1221/08/2013 1 The Path to Disaster The Deepwater Horizon BP's disaster in the Gulf of Mexico Industrial Psychology Research Centre 14th August, 2013 Transocean Deepwater Horizon #12;21/08/2013 2

  4. Deepwater Horizon Situation Report #5

    SciTech Connect (OSTI)

    2010-06-10

    At approximately 11:00 pm EDT April 20, 2010 an explosion occurred aboard the Deepwater Horizon mobile offshore drilling unit (MODU) located 52 miles Southeast of Venice, LA and 130 miles southeast of New Orleans, LA. The MODU was drilling an exploratory well and was not producing oil at the time of the incident. The Deepwater Horizon MODU sank 1,500 feet northwest of the well site. Detailed information on response and recovery operations can be found at: http://www.deepwaterhorizonresponse.com/go/site/2931/

  5. DOE Announces New Research to Advance Safe and Responsible Deepwater...

    Energy Savers [EERE]

    DOE Announces New Research to Advance Safe and Responsible Deepwater Drilling Technologies DOE Announces New Research to Advance Safe and Responsible Deepwater Drilling...

  6. University of Maine Researching Floating Technologies for Deepwater...

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

    Maine Researching Floating Technologies for Deepwater Offshore Wind University of Maine Researching Floating Technologies for Deepwater Offshore Wind October 1, 2012 - 12:57pm...

  7. EA-1792: University of Maine's Deepwater Offshore Floating Wind...

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

    792: University of Maine's Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project, Gulf of Maine EA-1792: University of Maine's Deepwater Offshore Floating Wind...

  8. Ultra-Deepwater Production Systems

    SciTech Connect (OSTI)

    Ken L. Smith; Marc E. Leveque

    2005-05-31

    The report herein is a summary of the work performed on three projects to demonstrate hydrocarbon drilling and production methods applicable to deep and ultra deepwater field developments in the Gulf of Mexico and other like applications around the world. This work advances technology that could lead to more economic development and exploitation of reserves in ultra-deep water or remote areas. The first project is Subsea Processing. Its scope includes a review of the ''state of the art'' in subsea components to enable primary production process functions such as first stage liquids and gas separation, flow boosting, chemical treatment, flow metering, etc. These components are then combined to allow for the elimination of costly surface production facilities at the well site. A number of studies were then performed on proposed field development projects to validate the economic potential of this technology. The second project involved the design and testing of a light weight production riser made of composite material. The proposed design was to meet an actual Gulf of Mexico deepwater development project. The various engineering and testing work is reviewed, including test results. The third project described in this report encompasses the development and testing of a close tolerance liner drilling system, a new technology aimed at reducing deepwater drilling costs. The design and prototype testing in a test well are described in detail.

  9. Environmental disaster or just a drop in the bucket?: Texas scientists on the real effects of the Deepwater Horizon oil spill 

    E-Print Network [OSTI]

    Lee, Leslie

    2011-01-01

    .pdf.txt Content-Type text/plain; charset=windows-1252 Winter 2011 tx H2O 3 or just a drop in thebucket?Texas scientists on the real e?ects of the Deepwater Horizon oil spill 4 tx H2O Winter 2011 Environmental Disaster Continued What if gasoline... used by some oil companies,? Bianchi commented to Texas A&M News & Information Services in November. ??ey use high pressure water systems, which on rocks is ?ne, but not on plant material. So this has likely cut them [the plant material] back so...

  10. Ultra-Deepwater Production Systems

    SciTech Connect (OSTI)

    K. L. Smith; M. E. Leveque

    2003-09-30

    This report includes technical progress made during the period October, 2002 through September, 2003. At the end of the second technical progress report, the ConocoPhillips opportunities to apply subsea processing in the Gulf of Mexico had been exhausted, and an alternative site was identified in Norway. This was a non-ConocoPhillips operated field, and the subsea processing was proposed as a phased development approach with 2-phase separation at the field, and then gas and liquids exported via pipeline to remote platform locations for processing. Although the unrisked economics were quite favorable, the risked economic evaluation compelled the operator to develop the field with the more conventional and proven Floating Production, Storage and Offloading (FPSO) option. Work on the subsea processing was suspended at this time. Discussions with DOE regarding two other step-change deepwater technologies ensued. One was an effort to develop a light-weight, high pressure composite production riser. A field demonstration of the design would then be performed by deploying a limited number of composite joints in a Gulf of Mexico deepwater development. The other was to begin the process of taking drilling with casing technology to the deepwater. This is called, ''close-tolerance liner drilling''. It was agreed that both technologies should be pursued, and the work began. During this reporting period, the initial production riser design had been completed and preliminary test sample components were being fabricated. Regarding the liner drilling, the sub-contractors were selected, the design basis was agreed and designs progressed towards meeting a projected first quarter, 2004 onshore test program.

  11. Ultra-Deepwater Production Systems

    SciTech Connect (OSTI)

    K. L. Smith; M. E. Leveque

    2004-09-30

    This report includes technical progress made during the period October, 2003 through September, 2004. At the end of the last technical progress report, the subsea processing aspects of the work program had been dropped due to the lack of commercial opportunity within ConocoPhillips, and the program had been redirected towards two other promising deepwater technologies: the development and demonstration of a composite production riser, and the development and testing of a close-tolerance liner drilling system. This report focuses on these two technologies.

  12. RNA-Seq reveals complex genetic response to deepwater horizon oil release in Fundulus grandis

    E-Print Network [OSTI]

    Garcia, Tzintzuni I; Shen, Yingjia; Crawford, Douglas; Oleksiak, Marjorie F; Whitehead, Andrew; Walter, Ronald B

    2012-01-01

    Abbreviations DH: Deepwater Horizon drilling platform; AHR:blowout of the Deepwater Horizon (DH) drilling platform wasexplosion of the Deepwater Hori- zon oil drilling platform

  13. Limitations of extended reach drilling in deepwater 

    E-Print Network [OSTI]

    Akinfenwa, Akinwunmi Adebayo

    2000-01-01

    As the worldwide search for hydrocarbons continues into the deepwater of the oceans, drilling extended reach wells have helped to drain the fields in the most cost effective way, thus providing the oil and gas industry the cushion to cope...

  14. Deepwater Offshore Wind Technology Research Requirements (Poster)

    SciTech Connect (OSTI)

    Musial, W.

    2005-05-01

    A poster presentation for AWEA's WindPower 2005 conference in Denver, Colorado, May 15-18, 2005 that provides an outline of the requirements for deepwater offshore wind technology development

  15. Oyo-first field Deepwater Nigeria?

    SciTech Connect (OSTI)

    Lilletveit, R.; Nelson, L. [The Statoil and BP Alliance, Stavanger (Norway); Osahon, G. [Allied Energy Resources (Nig) Ltd., Lagos (Nigeria)

    1996-08-01

    The Oyo-1 well was drilled in 3Q95 in OPL 210. The partners in the block are Allied Energy (Operator) and the Statoil and BP Alliance. This well was the first well drilled in Deepwater Nigeria and is a reported hydrocarbon discovery. Although the well was within the Niger Delta depositional system, the deepwater play types drilled were quite different than anything previously tested on the Nigerian shelf or onshore. One year on, some of the questions to be asked are: (1) What did Oyo-1 discover? (2) What has been done to establish the commerciality, or otherwise, of the hydrocarbon pools encountered? (3) What impact does this discovery have on other prospects identified in the deepwater area? The answer to these questions will help to identify whether a new hydrocarbon province in the deepwater Nigeria area can be developed, or not.

  16. Pressure in a deep-water Stokes wave David Henry

    E-Print Network [OSTI]

    Pressure in a deep-water Stokes wave David Henry School of Mathematical Sciences Dublin City description of the pressure distribution function for a deep-water Stokes wave. Keywords: Stokes wave, deep provide a qualitative description of the pressure distribution beneath the free surface of a deep-water

  17. Deepwater Horizon Study Group 3 Environmental Report January 2011

    E-Print Network [OSTI]

    Silver, Whendee

    assessment of the Deepwater Horizon oil spill, as well as summarize the lessons learned from the spillDeepwater Horizon Study Group 3 Environmental Report ­ January 2011 1 The Macondo Blowout. #12;Deepwater Horizon Study Group The Macondo Blowout Environmental Report 2 1 Looking Back

  18. LADY BIRD JOHNSON MIDDLE SCHOOL IRVING, TX

    E-Print Network [OSTI]

    and purge ports. #12;LADY BIRD JOHNSON MIDDLE SCHOOL IRVING, TX 3' x 5' Solar Panels 191 watts per panel 600 KW Solar Array 2,988 Solar Panels 850,000 kWh Annual Output Solar Classroom Deck SOLAR PV SYSTEM #12 in the United States #12;LADY BIRD JOHNSON MIDDLE SCHOOL IRVING, TX THE LAYOUT AFTER HOURS GYM ENTRY SOLAR

  19. Creating the Permanent Prisoner

    E-Print Network [OSTI]

    Dolovich, Sharon

    2012-01-01

    Facing the Challenges of Prisoner Reentry (Washington, DC:Press, 2005). Creating the Permanent Prisoner | 137C. West, Data Brief: Prisoners at Yearend 2009—Advance

  20. DOI Strategic Sciences Working Group Mississippi Canyon 252/Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    DOI Strategic Sciences Working Group Mississippi Canyon 252/Deepwater Horizon Oil Spill Strategic Sciences Working Group Mississippi Canyon 252/Deepwater Horizon Oil Spill Progress Report Executive Summary Introduction and Objectives The Mississippi Canyon 252/Deepwater Horizon (MS252) oil spill

  1. Three-Dimensional Simulations of Deep-Water Breaking Waves

    E-Print Network [OSTI]

    Brucker, Kyle A; Dommermuth, Douglas G; Adams, Paul

    2014-01-01

    The formulation of a canonical deep-water breaking wave problem is introduced, and the results of a set of three-dimensional numerical simulations for deep-water breaking waves are presented. In this paper fully nonlinear progressive waves are generated by applying a normal stress to the free surface. Precise control of the forcing allows for a systematic study of four types of deep-water breaking waves, characterized herein as weak plunging, plunging, strong plunging, and very strong plunging.

  2. Tank 241-TX-111 tank characterization plan

    SciTech Connect (OSTI)

    Homi, C.S., Westinghouse Hanford

    1996-05-09

    This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-TX-111.

  3. Tank 241-TX-105 tank characterization plan

    SciTech Connect (OSTI)

    Homi, C.S., Westinghouse Hanford

    1996-05-09

    This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-TX-105.

  4. Chemical fingerprinting of petroleum biomarkers in Deepwater Horizon oil spill samples collected from Alabama shoreline

    E-Print Network [OSTI]

    Clement, Prabhakar

    Chemical fingerprinting of petroleum biomarkers in Deepwater Horizon oil spill samples collected the chromatographic signatures of petroleum biomarkers in Deepwater Horizon (DH) source oil, three other reference

  5. ORISE: White paper analyzes Deepwater Horizon event for improving...

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

    Horizon response, identifies approaches for radiological or nuclear emergency planning The 2010 Deepwater Horizon oil spill shares many of the same challenges associated...

  6. FE's Ultra-Deepwater Program focuses on spill prevention, safety...

    Office of Environmental Management (EM)

    mission is to work toward mitigating the risks and challenges associated with ultra-deepwater drilling and production operations. This includes deepening the collaboration...

  7. Subsea valve actuator for ultra deepwater

    SciTech Connect (OSTI)

    Ali, S.Z.; Skeels, H.B.; Montemayor, B.K.; Williams, M.R.

    1996-12-31

    This paper reviews the continuing development of gate valve and actuator technology for subsea completions extending into ultra deep water. The basic technical challenges inherent to subsea valve actuators are reviewed, along with the various factors which affect the design and performance of these devices in deepwater applications. The high external ambient pressures which occur in deep water, coupled with high specific gravity hydraulic control fluids, are shown to have a significant impact on the performance of the actuators. This paper presents design and analysis methods and the verification test procedures which are required to develop and qualify new deep water actuator designs. Gate valve actuators of the type described in this paper are currently in use on subsea christmas trees on the world`s deepest subsea wells offshore Brazil (water depths >3,000 feet). New applications of the deepwater actuators are in process for upcoming Gulf of Mexico subsea production systems in water depths approaching 6,000 feet. The actuator/valve development method described in this paper has been confirmed by performance verification testing of full scale valves and actuators using a hyperbaric chamber to simulate ultra deepwater operating conditions. Performance of the test valves and actuators correlated very well with analytical predictions. Test results have confirmed that the new valve actuator designs will satisfy API 17D performance requirements for water depths up to 7,500 feet, well in excess of the upcoming GOM application.

  8. TX-100 manufacturing final project report.

    SciTech Connect (OSTI)

    Ashwill, Thomas D.; Berry, Derek S.

    2007-11-01

    This report details the work completed under the TX-100 blade manufacturing portion of the Carbon-Hybrid Blade Developments: Standard and Twist-Coupled Prototype project. The TX-100 blade is a 9 meter prototype blade designed with bend-twist coupling to augment the mitigation of peak loads during normal turbine operation. This structural coupling was achieved by locating off axis carbon fiber in the outboard portion of the blade skins. The report will present the tooling selection, blade production, blade instrumentation, blade shipping and adapter plate design and fabrication. The baseline blade used for this project was the ERS-100 (Revision D) wind turbine blade. The molds used for the production of the TX-100 were originally built for the production of the CX-100 blade. The same high pressure and low pressure skin molds were used to manufacture the TX-100 skins. In order to compensate for the difference in skin thickness between the CX-100 and the TX-100, however, a new TX-100 shear web plug and mold were required. Both the blade assembly fixture and the root stud insertion fixture used for the CX-100 blades could be utilized for the TX-100 blades. A production run of seven TX-100 prototype blades was undertaken at TPI Composites during the month of October, 2004. Of those seven blades, four were instrumented with strain gauges before final assembly. After production at the TPI Composites facility in Rhode Island, the blades were shipped to various test sites: two blades to the National Wind Technology Center at the National Renewable Energy Laboratory in Boulder, Colorado, two blades to Sandia National Laboratory in Albuquerque, New Mexico and three blades to the United States Department of Agriculture turbine field test facility in Bushland, Texas. An adapter plate was designed to allow the TX-100 blades to be installed on existing Micon 65/13M turbines at the USDA site. The conclusion of this program is the kick-off of the TX-100 blade testing at the three testing facilities.

  9. Organic Aerosol Formation Downwind from the Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    Toohey, Darin W.

    Organic Aerosol Formation Downwind from the Deepwater Horizon Oil Spill Nicole ONeill - ATOC 3500 and aerosol composition of air over the Deepwater Horizon oil spill in the Gulf of Mexico. · The lightest chemicals in the oil evaporated within hours, as scientists expected them to do. What they didn't expect

  10. deepwater_technology | netl.doe.gov

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

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

  11. Crude Injustice in the Gulf: Why Categorical Exclusions for Deepwater Drilling in the Gulf of Mexico are Inconsistent with U.S. International Ocean Law and Policy

    E-Print Network [OSTI]

    Hull, Eric V.

    2011-01-01

    a morato- rium on deepwater drilling after finding that "Categorical Exclusions for Deepwater Drilling in the Gulf ofReview Process for Deepwater Drilling in the Gulf is

  12. The TX Fonts December 15, 2000

    E-Print Network [OSTI]

    Mintmire, John W.

    The TX Fonts Young Ryu December 15, 2000 Contents 1 Introduction 2 2 Changes 2 3 A Problem: DVIPS, 2000) 1st public release 2.0 (November 2, 2000) · An encoding error in txi and txbi (`$' "24) is fixed. (Not all TS1 encoding glyphs are implemented.) 2.1 (November 18, 2000) · Complete implementation of TS1

  13. Light Metals Permanent Mold Casting

    SciTech Connect (OSTI)

    None

    2004-11-01

    The research will develop the gravity and/or low-pressure permanent-mold casting processes with sand or permanent-mold cores for aluminum and magnesium based alloys.

  14. Computational Intelligence for Deepwater Reservoir Depositional Environments Interpretation

    E-Print Network [OSTI]

    Yu, Tina; Clark, Julian; Sullivan, Morgan; 10.1016/j.jngse.2011.07.014

    2013-01-01

    Predicting oil recovery efficiency of a deepwater reservoir is a challenging task. One approach to characterize a deepwater reservoir and to predict its producibility is by analyzing its depositional information. This research proposes a deposition-based stratigraphic interpretation framework for deepwater reservoir characterization. In this framework, one critical task is the identification and labeling of the stratigraphic components in the reservoir, according to their depositional environments. This interpretation process is labor intensive and can produce different results depending on the stratigrapher who performs the analysis. To relieve stratigrapher's workload and to produce more consistent results, we have developed a novel methodology to automate this process using various computational intelligence techniques. Using a well log data set, we demonstrate that the developed methodology and the designed workflow can produce finite state transducer models that interpret deepwater reservoir depositional...

  15. Acoustic measurement of the Deepwater Horizon Macondo well flow rate

    E-Print Network [OSTI]

    Camilli, Richard

    On May 31, 2010, a direct acoustic measurement method was used to quantify fluid leakage rate from the Deepwater Horizon Macondo well prior to removal of its broken riser. This method utilized an acoustic imaging sonar and ...

  16. The Temperature Prediction in Deepwater Drilling of Vertical Well 

    E-Print Network [OSTI]

    Feng, Ming

    2012-07-16

    The extreme operating conditions in deepwater drilling lead to serious relative problems. The knowledge of subsea temperatures is of prime interest to petroleum engineers and geo-technologists alike. Petroleum engineers are interested in subsea...

  17. Are subsurface safety valves needed in deepwater?

    SciTech Connect (OSTI)

    Verret, A.; Hey, C.

    1995-11-01

    The object of this study was to evaluate SCSSV reliability and identify a preferred configuration for subsea completions in deepwater. A system design consisting of subsea, conventional, dual-bore tree, cluster wells was selected for evaluation. The study examined inherent risks associated with six tubing retrievable SCSSV configurations. Risks were evaluated for personnel and environmental safety, and operational and financial impact of: No SCSSV; Single SCSSV; Dual operating system single SCSSV; Tandem hot/hot (both valves active) SCSSVs without lockout features; Tandem hot/hot SCSSVs with lockout features; Tandem hot/cold (one valve active, the other dormant in open position) SCSSVs with lockout features. A ``fault tree`` identifying events that could lead to deleterious incidents was used to evaluate risks. Costs and consequences associated with potential events were determined using existing industry data, and resulting calculated risks were evaluated. Recommendations were developed and compared to current regulations, and potential regulatory conflicts were identified.

  18. 2007 Annual Plan for the Ultra-Deepwater and Unconventional Natural...

    Energy Savers [EERE]

    2007 Annual Plan for the Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Research and Development Program 2007 Annual Plan for the Ultra-Deepwater and...

  19. 2008 Annual Plan for the Ultra-Deepwater and Unconventional Natural...

    Energy Savers [EERE]

    8 Annual Plan for the Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Research and Development Program 2008 Annual Plan for the Ultra-Deepwater and...

  20. ,"Alamo, TX Natural Gas Pipeline Imports From Mexico (MMcf)"

    U.S. Energy Information Administration (EIA) Indexed Site

    Alamo, TX Natural Gas Pipeline Imports From Mexico (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of Series","Frequency","Latest Data...

  1. Remote Camera and Trapping Survey of the Deep-water Shrimps Heterocarpus laevigatus and

    E-Print Network [OSTI]

    Remote Camera and Trapping Survey of the Deep-water Shrimps Heterocarpus laevigatus and H. ensifer and the Geryonid Crab Chaceon granulatus in Palau W. B. SAUNDERS and LEE C. HASTIE Introduction Deep-water bottom pilot efforts di rected at evaluating economic poten tial of deep-water shrimps (King, 1980, 1982, 1984

  2. Did the northeastern Gulf of Mexico become greener after the Deepwater Horizon oil spill?

    E-Print Network [OSTI]

    Meyers, Steven D.

    explosion occurred on the Deepwater Horizon (DWH) oil drilling platform in the northeastern Gulf of Mexico#12;Did the northeastern Gulf of Mexico become greener after the Deepwater Horizon oil spill ecosystem in the northeastern Gulf of Mexico (NEGOM) from the Deepwater Horizon oil spill (April ­ July 2010

  3. Genomic and physiological footprint of the Deepwater Horizon oil spill on resident marsh fishes

    E-Print Network [OSTI]

    Whitehead, Andrew

    -seq | toxicogenomics Following the Deepwater Horizon (DWH) drilling disaster on April 20, 2011, in the Gulf of MexicoGenomic and physiological footprint of the Deepwater Horizon oil spill on resident marsh fishes June 13, 2011) The biological consequences of the Deepwater Horizon oil spill are unknown, especially

  4. Research activities in the Norwegian Deepwater Programme Conference on CeSOS Highlights and AMOS Visions

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    Research activities in the Norwegian Deepwater Programme Conference on CeSOS Highlights and AMOS Visions Rolf Baarholm, Statoil 6/5/2013 #12;- Norwegian Deepwater Programme - VIV characterization) in the Norwegian Sea. Later extended to include 16th 17th 18th 19th 20th and 21st round deepwater licences. About

  5. Diversity of deep-water cetaceans in relation to temperature: implications for ocean warming

    E-Print Network [OSTI]

    Myers, Ransom A.

    LETTER Diversity of deep-water cetaceans in relation to temperature: implications for ocean warming anthropogenic change. Here we analyse a large, long-term data set of sightings of deep-water cetaceans from that deep-water oceanic communities that dominate > 60% of the planetÕs surface may reorganize in response

  6. Hanford Single Shell Tank Leak Causes and Locations - 241-TX Farm

    SciTech Connect (OSTI)

    Girardot, C. L.; Harlow, D> G.

    2014-07-22

    This document identifies 241-TX Tank Farm (TX Farm) leak causes and locations for the 100 series leaking tanks (241-TX-107 and 241-TX-114) identified in RPP-RPT-50870, Rev. 0, Hanford 241-TX Farm Leak Inventory Assessment Report. This document satisfies the TX Farm portion of the target (T04) in the Hanford Federal Facility Agreement and Consent Order milestone M-045-91F.

  7. 30.-DEEP-WATER OYSTER CULTURE. BP HENRY C. ROWE.

    E-Print Network [OSTI]

    30.-DEEP-WATER OYSTER CULTURE. BP HENRY C. ROWE. It is conceded,I think, that the oyster-growersof Ckmnecticut have taken the lead in the artificial propagation and cultivation of oysters in deep water; by deep water I mean a depth of from 30 to 75 feet. It is but twenty years since the commencement

  8. Transverse instabilities of deep-water solitary waves

    E-Print Network [OSTI]

    Carter, John

    Transverse instabilities of deep-water solitary waves BY BERNARD DECONINCK 1, *, DMITRY E train in deep water is described by a one-dimensional soliton solution of a two- dimensional nonlinear­ capillary waves in deep water that may be two-dimensional, nearly monochro- matic, and are slowly modulated

  9. Deep-Diving Cetaceans of the Gulf of Mexico : : Acoustic Ecology and Response to Natural and Anthropogenic Forces Including the Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    Merkens, Karlina Paul

    2013-01-01

    occurred on the Deepwater Horizon drilling rig, which wasBP Deepwater Horizon Oil Spill and O? shore Drilling, 2010]BP Deepwater Horizon Oil Spill and O?shore Drilling (2010).

  10. Freeport, TX Liquefied Natural Gas Exports to Mexico (Million...

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Mexico (Million Cubic Feet) Freeport, TX Liquefied Natural Gas Exports to Mexico (Million Cubic Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2013 2,725 - No Data...

  11. Tank 241-TX-116 tank characterization plan. Revision 1

    SciTech Connect (OSTI)

    Homi, C.S.

    1996-05-10

    This document is a plan that identifies the information needed to address relevant issues concerning short-term and long-term storage and long-term management of single-shell tank 241-TX-116.

  12. Crude Injustice in the Gulf: Why Categorical Exclusions for Deepwater Drilling in the Gulf of Mexico are Inconsistent with U.S. International Ocean Law and Policy

    E-Print Network [OSTI]

    Hull, Eric V.

    2011-01-01

    Exclusions for Deepwater Drilling in the Gulf of Mexico Aremorato- rium on deepwater drilling after finding that "underMMS Approved 27 Gulf Drilling Operations After BP Disaster,

  13. Electromagnetic acceleration of permanent magnets

    E-Print Network [OSTI]

    Dolya, S N

    2015-01-01

    We consider the acceleration of the permanent magnets, consisting of neodymium iron boron by means of the running magnetic field gradient. It is shown that the specific magnetic moment per nucleon in neodymium iron boron is determined by the remained magnetization of the substance. The maximum accessable gradient of the magnetic field accelerating the permanent magnets is determined by the coercive force thirty kilogauss. For the neodymium iron boron magnets this gradient is equal to twenty kilogauss divided by one centimeter. The finite velocity of the magnets six kilometers per second, the length of acceleration is six hundred thirty-seven meters.

  14. The impact of subsea boosting on deepwater field development

    SciTech Connect (OSTI)

    Ribeiro, O.J.S.; Camargo, R.M.T.; Paulo, C.A.S.

    1996-12-31

    This paper describes the impact that the use of a subsea boosting system will have on the development of a deepwater field. The analysis covers the technology demands and constraints encountered on screening studies executed for the fields of Marlim, Albacora and Barracuda, as well as an overview of the economic benefits encountered. The paper focuses on the technological demands and constraints identified as well as some considerations about possible alternatives. The demands and constraints identified in the study will provide the industry with some more input to guide the development of the subsea boosting technology, as well as a better understanding of how to apply this new tool on the development of deepwater prospects. The results of the screening study are showing that the subsea boosting systems are a valuable tool to reduce the costs of deepwater developments. The cost cutting possibilities through an integration between the conventional subsea hardware and the subsea boosting systems and the combination of boosting systems are promising alternatives. The encouraging economic results found, as well as the demands and constraints raised in the paper will be of use for those trying to apply these technologies in various areas of the world.

  15. Gas injection as an alternative option for handling associated gas produced from deepwater oil developments in the Gulf of Mexico 

    E-Print Network [OSTI]

    Qian, Yanlin

    2004-09-30

    999 Bcf of associated gas were produced from the Gulf of Mexico, with deepwater associated gas production accounting for 20% of this produced gas. Two important issues are the potential environmental impacts and the economic value of deepwater...

  16. T emporal structure in the deep-water temperature of four Swiss lakes: A short-term climatic change indicator?

    E-Print Network [OSTI]

    Livingstone, David M.

    7 T emporal structure in the deep-water temperature of four Swiss lakes: A short-term climatic in the hypolimnion. Since in temperate latitudes coupling between deep water and atmosphere is at its strongest in atmospheric forcing on the deep-water temper- ature may well be greater than any seasonal influences. The deep-water

  17. Climatic forcing of eastern Mediterranean deep-water formation and benthic ecosystems during the past 22 000 years

    E-Print Network [OSTI]

    Gilli, Adrian

    Climatic forcing of eastern Mediterranean deep-water formation and benthic ecosystems during) suggest a high spatiotemporal variability of deep-water oxygenation and biogeochemical processes maximum, cool surface waters and high evaporation resulted in maximum convection and oxic deep-waters

  18. Reconstruction of Early Paleogene North Pacific Deep-Water Circulation using the Neodymium Isotopic Composition of Fossil Fish Debris 

    E-Print Network [OSTI]

    Hague, Ashley Melissa

    2012-10-19

    Seamount sites. The Emperor Seamount chain likely played a major role in the flow of the North Pacific deep-water mass as it acted as a physical barrier to flow at deep-water sites compared to shallow depths (albeit still deep-water). ?Nd values indicate...

  19. National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling THE AMOUNT AND FATE OF THE OIL

    E-Print Network [OSTI]

    Meyers, Steven D.

    - 1 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling THE AMOUNT of the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling for the use of members responders assertions. 2 DEEPWATER HORIZON MC252 GULF INCIDENT OIL BUDGET [hereinafter OIL BUDGET] (Aug. 4

  20. Contrasting trends in North Atlantic deep-water formation in the Labrador Sea and Nordic Seas during the Holocene

    E-Print Network [OSTI]

    Renssen, Hans

    Contrasting trends in North Atlantic deep-water formation in the Labrador Sea and Nordic Seas deep-water formation is studied in a 9,000-year long simulation with a coupled climate model the experiment, deep-water formation in the Nordic Seas is reduced due to an enhanced influx of sea ice from

  1. Deepwater Horizon crude oil impacts the developing hearts of large predatory pelagic fish

    E-Print Network [OSTI]

    Grosell, Martin

    Deepwater Horizon crude oil impacts the developing hearts of large predatory pelagic fish John P November 6, 2013) The Deepwater Horizon disaster released more than 636 million L of crude oil and larvae) of tunas, swordfish, and other large predators were potentially exposed to crude oil

  2. The North Pacific Acoustic Laboratory deep-water acoustic propagation experiments in the Philippine Sea

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    The North Pacific Acoustic Laboratory deep-water acoustic propagation experiments in the Philippine in the Philippine Sea during 2009­2011 investigated deep-water acoustic propagation and ambient noise of spanning the water column in the deep ocean. The acoustic transmissions and ambient noise were also

  3. High Mercury Concentrations Reflect Trophic Ecology of Three Deep-Water Chondrichthyans

    E-Print Network [OSTI]

    Newman, Michael C.

    High Mercury Concentrations Reflect Trophic Ecology of Three Deep-Water Chondrichthyans Michael C concentrations were explored for three deep-water chondrichthyans (Etmopterus princeps, Cen- troscymnus position in the trophic web (as indicated by differences in d15 N). Mercury is a major contaminant

  4. OFFICE OF RESPONSE AND RESTORATION ! EMERGENCY RESPONSE DIVISION Deepwater Horizon Oil

    E-Print Network [OSTI]

    OFFICE OF RESPONSE AND RESTORATION ! EMERGENCY RESPONSE DIVISION Deepwater Horizon Oil: Characteristics and Concerns Oil spilled from the Deepwater Horizon wellhead has been accumulating in the environment of the Gulf of Mexico since April 20. This document describes the potential forms the oil may take

  5. Multicomponent seismic data have unique value for studying near-seafloor geology in deepwater environments.

    E-Print Network [OSTI]

    Texas at Austin, University of

    Multicomponent seismic data have unique value for studying near-seafloor geology in deepwater multicomponent seismic data acquired in deepwater with seafloor sensors show near- seafloor geology wavefields can be separated.Adirect measurement of the downgoing seismic wavelet is thus available

  6. SOLITARY WAVE INTERACTION IN A COMPACT EQUATION FOR DEEP-WATER GRAVITY WAVES

    E-Print Network [OSTI]

    Boyer, Edmond

    SOLITARY WAVE INTERACTION IN A COMPACT EQUATION FOR DEEP-WATER GRAVITY WAVES FRANCESCO FEDELE of the Zakharov equation for unidirectional deep-water waves recently derived by Dyachenko & Zakharov [7-conserving quantities. Key words and phrases. water waves; deep water approximation; Hamiltonian structure; travelling

  7. THE EMERGENCE OF COHERENT WAVE GROUPS IN DEEP-WATER CLAUDIO VIOTTI, DENYS DUTYKH

    E-Print Network [OSTI]

    THE EMERGENCE OF COHERENT WAVE GROUPS IN DEEP-WATER RANDOM SEA CLAUDIO VIOTTI, DENYS DUTYKH , JOHN M. DUDLEY, AND FR´ED´ERIC DIAS Abstract. Extreme surface waves in deep-water long-crested sea-focussing mechanism of surface waves in deep water, furthermore, we narrow our study to the case of two spatial

  8. Making permanent magnets more powerful and less expensive | The...

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

    Making permanent magnets more powerful and less expensive Today's high-tech and clean energy capabilities are extremely reliant on powerful permanent magnets. Permanent magnets...

  9. DOE's Portal to Deepwater Horizon Oil Spill Data

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

    On April 20, 2010, the Deepwater Horizon platform in the Gulf of Mexico exploded. The explosion and fire killed and injured workers on the oil rig, and caused major releases of oil and gas into the Gulf for several months. The Department of Energy, in keeping with the Obama Administrations ongoing commitment to transparency, provided online access to data and information related to the response to the BP oil spill. Included are schematics, pressure tests, diagnostic results, video clips, and other data. There are also links to the Restore the Gulf website, to the trajectory forecasts from NOAA, and oil spill information from the Environmental Protection Agency.

  10. New subsea wiper plugs hold down deepwater cementing costs

    SciTech Connect (OSTI)

    Stringer, R.; Sonnefeld, A.; Minge, J.

    1997-02-01

    British Petroleum Exploration (BPX) achieved top-quality cementing performance at significantly lower costs in a deepwater area 45 miles offshore Louisiana by using a new method of launching subsea wiper plugs. The method is based on a newly designed subsea casing wiper plug release system, which uses up to three solid wiper plugs loaded in a basket and released by individual darts launched from a surface tool. This design has eliminated the problems sometimes associated with the latching, unlatching and sealing of conventional subsea casing wiper plugs.

  11. Major deepwater pipelay vessel starts work in North Sea

    SciTech Connect (OSTI)

    Heerema, E.P.

    1998-05-04

    Industry`s deepwater pipelaying capability has received a boost this year with the entry into the world`s fleet of Solitaire, a dynamically positioned pipelay vessel of about 350 m including stinger. The converted bulk carrier, formerly the Trentwood, will arrive on station in the North Sea and begin laying pipe this month on Statoil`s Europipe II project, a 600-km, 42-in. OD gas pipeline from Norway to Germany. Next year, the vessel will install pipe for the Exxon U.S.A.`s Gulf of Mexico South Diana development (East Breaks Block 945) in a water depth of 1,643 m and for Mobil Oil Canada as part of the Sable Island Offshore and Energy Project offshore Nova Scotia. Using the S-lay mode, Solitaire is particularly well-suited for laying large lines economically, including the deepwater projects anticipated for the US Gulf of Mexico. Table 1 presents Solitaire`s technical specifications. The design, construction, pipelaying, and justification for building vessels such as the Solitaire are discussed.

  12. Method of making permanent magnets

    DOE Patents [OSTI]

    McCallum, R.W.; Dennis, K.W.; Lograsso, B.K.; Anderson, I.E.

    1993-09-07

    A method for making an isotropic permanent magnet comprises atomizing a melt of a rare earth-transition metal alloy (e.g., an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce protectively coated, rapidly solidified, generally spherical alloy particles. Wherein a majority of the particles are produced/size classified within a given size fraction (e.g., 5 to 40 microns diameter) exhibiting optimum as-atomized magnetic properties and subjecting the particles to concurrent elevated temperature and elevated isotropic pressure for a time effective to yield a densified, magnetically isotropic magnet compact having enhanced magnetic properties and mechanical properties. 13 figures.

  13. Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs

    SciTech Connect (OSTI)

    Michael Batzle

    2006-04-30

    During this last period of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), we finalized integration of rock physics, well log analysis, seismic processing, and forward modeling techniques. Most of the last quarter was spent combining the results from the principal investigators and come to some final conclusions about the project. Also much of the effort was directed towards technology transfer through the Direct Hydrocarbon Indicators mini-symposium at UH and through publications. As a result we have: (1) Tested a new method to directly invert reservoir properties, water saturation, Sw, and porosity from seismic AVO attributes; (2) Constrained the seismic response based on fluid and rock property correlations; (3) Reprocessed seismic data from Ursa field; (4) Compared thin layer property distributions and averaging on AVO response; (5) Related pressures and sorting effects on porosity and their influence on DHI's; (6) Examined and compared gas saturation effects for deep and shallow reservoirs; (7) Performed forward modeling using geobodies from deepwater outcrops; (8) Documented velocities for deepwater sediments; (9) Continued incorporating outcrop descriptive models in seismic forward models; (10) Held an open DHI symposium to present the final results of the project; (11) Relations between Sw, porosity, and AVO attributes; (12) Models of Complex, Layered Reservoirs; and (14) Technology transfer Several factors can contribute to limit our ability to extract accurate hydrocarbon saturations in deep water environments. Rock and fluid properties are one factor, since, for example, hydrocarbon properties will be considerably different with great depths (high pressure) when compared to shallow properties. Significant over pressure, on the other hand will make the rocks behave as if they were shallower. In addition to the physical properties, the scale and tuning will alter our hydrocarbon indicators. Gas saturated reservoirs change reflection amplitudes significantly. The goal for the final project period was to systematically combine and document these various effects for use in deep water exploration and transfer this knowledge as clearly and effectively as possible.

  14. Paleogene marine bivalves of the deep-water Keasey Formation in Oregon, Part III: The heteroconchs

    E-Print Network [OSTI]

    Hickman, Carole S.

    2015-01-01

    and adjacent Antarctic waters (Bivalvia: Thyasiridae).bivalves of the deep-water Keasey Formation in Oregon, partThyasiridae) from cold-water methane-rich areas of the Sea

  15. From hurricanes to the Deepwater Horizon oil spill in coastal Louisiana: The impact of regulatory change

    E-Print Network [OSTI]

    Cheong, So-Min

    2014-01-01

    The issue of whether adaptations to past disasters can impede adaptation to new disasters of a different type or intensity will be analyzed by examining the transition from frequent hurricanes to the Deepwater Horizon oil spill in coastal Louisiana...

  16. Evolution of Atlantic deep-water circulation: from the greenhouse to the icehouse 

    E-Print Network [OSTI]

    Via, Rachael Kathleen

    2005-11-01

    To better understand how the evolution of Cenozoic deep-water circulation related to changes in global climate and ocean basin configuration, we generated Nd isotope records from Ocean Drilling Program sites in the southeastern Atlantic to track...

  17. Deepwater production drives design of new Gulf gas plant

    SciTech Connect (OSTI)

    Nielsen, R.A. [Amoco Corp., Houston, TX (United States); Petty, L.; Elliot, D.; Chen, R. [International Process Services Inc., Houston, TX (United States)

    1998-03-16

    Exploration and production success in deepwater, eastern Gulf of Mexico has created the need for additional gas-transmission and processing infrastructure. The Destin pipeline and the Pascagoula gas-processing plant are being built to serve this need. The Destin pipeline originates at a junction platform at Main Pass 260 and, after coming ashore near Pascagoula, Miss., will connect with five interstate gas-transmission pipelines, by-passing gas-transportation bottlenecks in Louisiana and Alabama. The Pascagoula plant will be built near the point the pipeline comes ashore and immediately before the first compressor station. The paper discusses handling condensate, design goals, achieving objectives, low life-cycle cost, and project schedule.

  18. Review of “Deepwater Horizon Release Estimate of Rate by PIV”

    SciTech Connect (OSTI)

    Onishi, Yasuo

    2010-06-01

    The Plume Calculation Team (PCT) conducted high quality work within a very short period of time, in spite of needing to use less than ideal quality videos provided by British Petroleum (BP), especially those made before the cutoff of the riser above the Blow Out Preventer (BOP) on June 3, 2010. There are at least two valid approaches for estimating the oil discharge coming out from the Deepwater Horizon broken pipeline and its riser, using BP videotapes. One method is to estimate the exit velocity directly with the use of the Particle Image Velocimetry (PIV). The second method is to use a buoyant plume analysis to determine the exit velocity. The PCT used both of these methods.

  19. txH20: Volume 7, Number 1 (Complete) 

    E-Print Network [OSTI]

    Wythe, Kathy

    2011-01-01

    of working with a top-notch communications team. ?is special drought issue of txH?O is evidence of its good work. Neal Wilkins Working to make every drop count Published by Texas Water Resources Institute Editor Kathy Wythe Texas Water Resources... ] Timeline of Droughts in TexasD The United States signs a water treaty with Mexico for allocation of the waters of the Rio Grande below Fort Quitman, Texas. 1940 1941 1942 1943 1944 1945 1946 1947 1948...

  20. Rotary mode core sampling approved checklist: 241-TX-113

    SciTech Connect (OSTI)

    Fowler, K.D.

    1998-08-03

    The safety assessment for rotary mode core sampling was developed using certain bounding assumptions, however, those assumptions were not verified for each of the existing or potential flammable gas tanks. Therefore, a Flammable Gas/Rotary Mode Core Sampling Approved Checklist has been completed for tank 241-TX-113 prior to sampling operations. This transmittal documents the dispositions of the checklist items from the safety assessment.

  1. Rotary mode core sampling approved checklist: 241-TX-116

    SciTech Connect (OSTI)

    FOWLER, K.D.

    1999-02-24

    The safety assessment for rotary mode core sampling was developed using certain bounding assumptions, however, those assumptions were not verified for each of the existing or potential flammable gas tanks. Therefore, a Flammable Gas/Rotary Mode Core Sampling Approved Checklist has been completed for tank 241-TX-116 prior to sampling operations. This transmittal documents the dispositions of the checklist items from the safety assessment.

  2. EIS-0412: TX Energy, LLC, Industrial Gasification Facility Near Beaumont,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|Department of5Department oftoStatementMitigationTX | Department of

  3. Gating of Permanent Molds for ALuminum Casting

    SciTech Connect (OSTI)

    David Schwam; John F. Wallace; Tom Engle; Qingming Chang

    2004-03-30

    This report summarizes a two-year project, DE-FC07-01ID13983 that concerns the gating of aluminum castings in permanent molds. The main goal of the project is to improve the quality of aluminum castings produced in permanent molds. The approach taken was determine how the vertical type gating systems used for permanent mold castings can be designed to fill the mold cavity with a minimum of damage to the quality of the resulting casting. It is evident that somewhat different systems are preferred for different shapes and sizes of aluminum castings. The main problems caused by improper gating are entrained aluminum oxide films and entrapped gas. The project highlights the characteristic features of gating systems used in permanent mold aluminum foundries and recommends gating procedures designed to avoid common defects. The study also provides direct evidence on the filling pattern and heat flow behavior in permanent mold castings.

  4. Bivariate Left-Censored Bayesian Model for Predicting Exposure: Preliminary Analysis of Worker Exposure during the Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    Groth, Caroline; Banerjee, Sudipto

    2015-01-01

    M. , Reddy, K. (2014) Crude oil spill exposure and humanof the volatile components of crude oil that make upapproximately 20% of the crude oil released in the Deepwater

  5. POLICY GUIDANCE MEMORANDUM #23 Permanent and Nonpermanent Positions...

    Office of Environmental Management (EM)

    3 Permanent and Nonpermanent Positions, Appointments, & CHRIS Codes POLICY GUIDANCE MEMORANDUM 23 Permanent and Nonpermanent Positions, Appointments, & CHRIS Codes DOE Guidance -...

  6. Modeling and optimization of permanent magnetic motors

    E-Print Network [OSTI]

    Pinkham, Andrew P

    2008-01-01

    This thesis develops analytic models for the prediction and optimization of radial-flux permanent magnet motor torque and efficiency. It also facilitates the design optimization of electromagnetically-powered rotorcraft ...

  7. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    Michael Batzle; D-h Han; R. Gibson; Huw James

    2005-08-12

    We are now entering the final stages of our ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342). We have now developed several techniques to help distinguish economic hydrocarbon deposits from false ''Fizz'' gas signatures. These methods include using the proper in situ rock and fluid properties, evaluating interference effects on data, and doing better constrained inversions for saturations. We are testing these techniques now on seismic data from several locations in the Gulf of Mexico. In addition, we are examining the use of seismic attenuation as indicated by frequency shifts below potential reservoirs. During this quarter we have: Began our evaluation of our latest data set over the Neptune Field; Developed software for computing composite reflection coefficients; Designed and implemented stochastic turbidite reservoir models; Produced software & work flow to improve frequency-dependent AVO analysis; Developed improved AVO analysis for data with low signal-to-noise ratio; and Examined feasibility of detecting fizz gas using frequency attenuation. Our focus on technology transfer continues, both by generating numerous presentations for the upcoming SEG annual meeting, and by beginning our planning for our next DHI minisymposium next spring.

  8. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    M. Batzle; D-h Han; R. Gibson; O. Djordjevic

    2003-03-20

    The ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' (Grant/Cooperative Agreement DE-FC26-02NT15342) began September 1, 2002. During this second quarter: A Direct Hydrocarbon Indicator (DHI) symposium was held at UH; Current DHI methods were presented and forecasts made on future techniques; Dr. Han moved his laboratory from HARC to the University of Houston; Subcontracts were re-initiated with UH and TAMU; Theoretical and numerical modeling work began at TAMU; Geophysical Development Corp. agreed to provide petrophysical data; Negotiations were begun with Veritas GDC to obtain limited seismic data; Software licensing and training schedules were arranged with Paradigm; and Data selection and acquisition continues. The broad industry symposium on Direct Hydrocarbon Indicators was held at the University of Houston as part of this project. This meeting was well attended and well received. A large amount of information was presented, not only on application of the current state of the art, but also on expected future trends. Although acquisition of appropriate seismic data was expected to be a significant problem, progress has been made. A 3-D seismic data set from the shelf has been installed at Texas A&M University and analysis begun. Veritas GDC has expressed a willingness to provide data in the deep Gulf of Mexico. Data may also be available from TGS.

  9. Deep-water gravity waves: theoretical estimating of wave parameters

    E-Print Network [OSTI]

    Mindlin, Ilia M

    2014-01-01

    This paper addresses deep-water gravity waves of finite amplitude generated by an initial disturbance to the water. It is assumed that the horizontal dimensions of the initially disturbed body of the water are much larger than the magnitude of the free surface displacement in the origin of the waves. Initially the free surface has not yet been displaced from its equilibrium position, but the velocity field has already become different from zero. This means that the water at rest initially is set in motion suddenly by an impulse. Duration of formation of the wave origin and the maximum water elevation in the origin are estimated using the arrival times of the waves and the maximum wave-heights at certain locations obtained from gauge records at the locations, and the distances between the centre of the origin and each of the locations. For points situated at a long distance from the wave origin, forecast is made for the travel time and wave height at the points. The forecast is based on the data recorded by th...

  10. Deep-water gravity waves: nonlinear theory of wave groups

    E-Print Network [OSTI]

    Mindlin, I M

    2014-01-01

    Nonlinear initial-boundary value problem on deep-water gravity waves of finite amplitude is solved approximately (up to small terms of higher order) assuming that the waves are generated by an initial disturbance to the water and the horizontal dimensions of the initially disturbed body of the water are much larger than the magnitude of the free surface displacement. A numerable set of specific free surface waves is obtained in closed form and it is shown that free surface waves produced by an arbitrary initial disturbance to the water is a combination (not superposition: the waves are nonlinear) of the specific waves. A set of dispersive wave packets is found with one-to-one correspondence between the packets and positive integers, say, packet numbers, such that any initial free surface displacement gradually disintegrates into a number (limited or unlimited, depending on initial conditions) of the wave packets. The greater the packet number, the shorter the wavelength of the packet's carrier wave component,...

  11. Re: Account 2155-E7P10 -Deepwater Oil Spill sand-berm report Jack L Kindinger 0 Rebecca J Deckard 05/26/201006:08 PM

    E-Print Network [OSTI]

    Re: Account 2155-E7P10 - Deepwater Oil Spill sand-berm report t Jack L Kindinger 0 Rebecca J Re: Account 2155-E7P10 -- Deepwater Oil spill sand-berm >, kcrutch > > > > > > > > Hey, Kim. > OS/26/2010 12:55 PM Re: Account 21SS-E7PIO -- Deepwater Oil Spill sand-berm > Just wanted

  12. txH2O: Volume 5, Number 3 (Complete) 

    E-Print Network [OSTI]

    Texas Water Resources Institute

    2010-01-01

    is funded in part by the U.S. Geological Survey and authorized by the Water Resources Research Act. To subscribe to txH2O or New Waves, TWRI?s monthly e-mail newsletter, visit http://twri.tamu.edu. 2 I This is your stream. This is your stream on drugs... and understood by ECLOX-using personnel, after the completion of this year?s cities? protocols, that will be 36 cities that have the tools to maintain secure drinking water.? *Some information from a TEEX news release A big production is under- way in Texas...

  13. RAPID/Roadmap/1-TX-a | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevada <UtahMontanasource HistoryNM-aTX-a <

  14. RAPID/Roadmap/11-TX-a | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevada <UtahMontanasourceWA-a <aaTX-a <

  15. RAPID/Roadmap/11-TX-b | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevada <UtahMontanasourceWA-a <aaTX-a <b

  16. RAPID/Roadmap/11-TX-c | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevada <UtahMontanasourceWA-a <aaTX-a <bc

  17. RAPID/Roadmap/12-TX-a | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevada <UtahMontanasourceWA-aCA-aMT-aTX-a <

  18. RAPID/Roadmap/4-TX-a | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/Colorado <RAPID/Geothermal/Water Use/Nevadaa < RAPID‎f <CA-aabTX-a < RAPID‎

  19. ARM - Field Campaign - TX-2002 AIRS Validation Campaign

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode DesigngovCampaignsSpring Single Column Model IOP ARMStructure02.09govCampaignsTX-2002

  20. RAPID/Roadmap/13-TX-a | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-b < RAPID‎ | Roadmap JumpNV-a < RAPID‎ |TX-a

  1. Permanent magnet edge-field quadrupole

    DOE Patents [OSTI]

    Tatchyn, Roman O. (Mountain View, CA)

    1997-01-01

    Planar permanent magnet edge-field quadrupoles for use in particle accelerating machines and in insertion devices designed to generate spontaneous or coherent radiation from moving charged particles are disclosed. The invention comprises four magnetized rectangular pieces of permanent magnet material with substantially similar dimensions arranged into two planar arrays situated to generate a field with a substantially dominant quadrupole component in regions close to the device axis.

  2. Study: Exposure to crude oil from the Deepwater Horizon disaster causes swimming deficiencies in juvenile mahi mahi

    E-Print Network [OSTI]

    Grosell, Martin

    Study: Exposure to crude oil from the Deepwater Horizon disaster causes swimming deficiencies of large fish Crude oil spreads across a wide swath of the Gulf of Mexico during the 2010 Deepwater Horizon. The four million barrels of crude oil that spewed into the Gulf of Mexico from BP's failed oil drilling

  3. AVA simultaneous inversion of partially stacked seismic amplitude data for the spatial delineation of lithology and fluid units of deepwater

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    of lithology and fluid units of deepwater hydrocarbon reservoirs in the central Gulf of Mexico Arturo Contreras and delineate deepwater hydrocarbon reservoirs in the central Gulf of Mexico. Detailed AVA fluid/ lithology to fluid substitution. AVA reflectivity and angle-gather modeling indicate that the shale/sand interfaces

  4. INFLUENCE OF MECHANICAL COMPACTION AND CLAY MINERAL DIAGENESIS ON THE MICROFABRIC AND PORE-SCALE PROPERTIES OF DEEP-WATER

    E-Print Network [OSTI]

    -SCALE PROPERTIES OF DEEP-WATER GULF OF MEXICO MUDSTONES ANDREW C. APLIN 1 , INGO F. MATENAAR 1 , { , DOUGLAS K 1.8 and 5.8 km in the deep-water Gulf of Mexico. Mechanical compaction has reduced the porosity. MCCARTY 2 AND BEN A. VAN DER PLUIJM 3 1 NRG, School of Civil Engineering and Geosciences and Institute

  5. An ecologically mixed brachiopod fauna from Changhsingian deep-water basin of South China: consequence of end-Permian

    E-Print Network [OSTI]

    Tong, Jinnan

    An ecologically mixed brachiopod fauna from Changhsingian deep-water basin of South China 31: An ecologically mixed brachiopod fauna from Changhsingian deep-water basin of South China Permian Shaiwa Group of the Ziyun area of Guizhou, South China is a deep- water facies succession

  6. S/w Quality Assurance CAST-TX 1 Software Quality Assurance

    E-Print Network [OSTI]

    Tian, Jeff

    Management Nov. 30, 2002 Prof. Jeff Tian, SMU #12;S/w Quality Assurance CAST-TX 2 Software Quality: Why: customer view of quality Probability: statistical modeling Time/input/environment: OP · OP: OperationalS/w Quality Assurance CAST-TX 1 Software Quality Assurance -- Meeting New Challenges Jeff Tian

  7. Harnessing the power of Deep Learning :sromanka@tx.technion.ac.il Roman Kaplan

    E-Print Network [OSTI]

    Cidon, Israel

    " Harnessing the power of Deep Learning :sromanka@tx.technion.ac.il Roman Kaplan The hottest topic the exact application 2. We think how to implement the right system. 3. We (mostly you) chooseReduce, Hadoop/Spark/GraphLab. Use Machine Learning for Your Desired Purpose :sromanka@tx.technion.ac.il Roman

  8. Nomenclature Issues and the Y-Chromosome J.M. Butler (Genetic Genealogy Conference, Houston, TX)

    E-Print Network [OSTI]

    Nomenclature Issues and the Y-Chromosome J.M. Butler (Genetic Genealogy Conference, Houston, TX on Genetic Genealogy Houston, TX October 20, 2007 http://www.ybase.org/convert.asp The Problem · STR marker in the forensic DNA community? · What are some potential solutions to aid the genetic genealogy community

  9. New design of a guidelineless horizontal tree for deepwater ESP wells

    SciTech Connect (OSTI)

    Olijnik, L.A.; Vigesa, S.; Paula, M.T.R.; Figueiredo, M.W. de; Rutherford, H.W.

    1996-12-31

    This paper presents the new design of a horizontal tree for deepwater installation, as a key piece of equipment for application of a Electrical Submersible Pump in Subsea Wells. The production from subsea wells equipped with ESPs is a reality since October/94 with the first installation in Campos Basin. The horizontal tree adds simplicity to workover operations expected to be two to three times more frequency when compared to natural flow or gas lifted wells. The design and fabrication of the deepwater horizontal tree is a result of a Technological Cooperation Agreement. The design incorporates new solutions, mainly in diverless guidelineless connection of power cables and flowlines using the vertical connection system. The guidelineless horizontal subsea tree is fully prepared to be integrated on the new manifolds being designed for the Brazilian deepwater oilfields. The applications of the horizontal trees in subsea ESP wells reduce intervention cost, increasing economical attractiveness and scenarios for the applications of this new boosting technology.

  10. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    Michael Batzle; D-h Han; R. Gibson; Huw James

    2005-01-22

    During this last quarter of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), we have moved forward on several fronts, including data acquisition as well as analysis and application. During this quarter we have: (1) Completed our site selection (finally); (2) Measured fluid effects in Troika deep water sand sample; (3) Applied the result to Ursa ''fizz gas'' zone; (4) Compared thin layer property averaging on AVO response; (5) Developed target oriented NMO stretch correction; (6) Examined thin bed effects on A-B crossplots; and (7) Begun incorporating outcrop descriptive models in seismic forward models. Several factors can contribute to limit our ability to extract accurate hydrocarbon saturations in deep water environments. Rock and fluid properties are one factor, since, for example, hydrocarbon properties will be considerably different with great depths (high pressure) when compared to shallow properties. Significant over pressure, on the other hand will make the rocks behave as if they were shallower. In addition to the physical properties, the scale and tuning will alter our hydrocarbon indicators. Reservoirs composed of thin bed effects will broaden the reflection amplitude distribution with incident angle. Normal move out (NMO) stretch corrections based on frequency shifts can be applied to offset this effect. Tuning will also disturb the location of extracted amplitudes on AVO intercept and gradient (A-B) plots. Many deep water reservoirs fall this tuning thickness range. Our goal for the remaining project period is to systematically combine and document these various effects for use in deep water exploration.

  11. Cylindrical Hall Thrusters with Permanent Magnets

    SciTech Connect (OSTI)

    Raitses, Yevgeny; Merino, Enrique; Fisch, Nathaniel J.

    2010-10-18

    The use of permanent magnets instead of electromagnet coils for low power Hall thrusters can offer a significant reduction of both the total electric power consumption and the thruster mass. Two permanent magnet versions of the miniaturized cylindrical Hall thruster (CHT) of different overall dimensions were operated in the power range of 50W-300 W. The discharge and plasma plume measurements revealed that the CHT thrusters with permanent magnets and electromagnet coils operate rather differently. In particular, the angular ion current density distribution from the permanent magnet thrusters has an unusual halo shape, with a majority of high energy ions flowing at large angles with respect to the thruster centerline. Differences in the magnetic field topology outside the thruster channel and in the vicinity of the channel exit are likely responsible for the differences in the plume characteristics measured for the CHTs with electromagnets and permanent magnets. It is shown that the presence of the reversing-direction or cusp-type magnetic field configuration inside the thruster channel without a strong axial magnetic field outside the thruster channel does not lead to the halo plasma plume from the CHT. __________________________________________________

  12. Modular Permanent Magnet Machine Based on Soft Magnetic *** Burgess-Norton Mfg.Co.

    E-Print Network [OSTI]

    Lipo, Thomas

    . The rotor structure can be designed with surface permanent magnet (SPM) or internal permanent magnet (IPM

  13. CX-100 and TX-100 blade field tests.

    SciTech Connect (OSTI)

    Holman, Adam (USDA-Agriculture Research Service, Bushland, TX); Jones, Perry L.; Zayas, Jose R.

    2005-12-01

    In support of the DOE Low Wind Speed Turbine (LWST) program two of the three Micon 65/13M wind turbines at the USDA Agricultural Research Service (ARS) center in Bushland, Texas will be used to test two sets of experimental blades, the CX-100 and TX-100. The blade aerodynamic and structural characterization, meteorological inflow and wind turbine structural response will be monitored with an array of 75 instruments: 33 to characterize the blades, 15 to characterize the inflow, and 27 to characterize the time-varying state of the turbine. For both tests, data will be sampled at a rate of 30 Hz using the ATLAS II (Accurate GPS Time-Linked Data Acquisition System) data acquisition system. The system features a time-synchronized continuous data stream and telemetered data from the turbine rotor. This paper documents the instruments and infrastructure that have been developed to monitor these blades, turbines and inflow.

  14. New insights into microbial responses to oil spills from the Deepwater Horizon incident

    SciTech Connect (OSTI)

    Mason, O.U.; Hazen, T.C.

    2011-06-15

    On April 20, 2010, a catastrophic eruption of methane caused the Deepwater Horizon exploratory drill rig drilling the Macondo Well in Mississippi Canyon Block 252 (MC252) to explode. The Deepwater Horizon oil spill was unprecendeted for several reasons: the volume of oil released; the spill duration; the well depth; the distance from the shore-line (77 km or about 50 miles); the type of oil (light crude); and the injection of dispersant directly at the wellhead. This study clearly demonstrated that there was a profound and significant response by certain members of the in situ microbial community in the deep-sea in the Gulf of Mexico. In particular putative hydrocarbon degrading Bacteria appeared to bloom in response to the Deepwater Horizon oil spill, even though the temperature at these depths is never >5 C. As the plume aged the shifts in the microbial community on a temporal scale suggested that different, yet metabolically important members of the community were able to respond to a myriad of plume constituents, e.g. shifting from propane/ethane to alkanes and finally to methane. Thus, the biodegradation of hydrocarbons in the plume by Bacteria was a highly significant process in the natural attenuation of many compounds released during the Deepwater Horizon oil spill.

  15. Deepwater Horizon Study Finds Crude Oil Harmful to Bluefin, Yellowfin Tuna

    E-Print Network [OSTI]

    Grosell, Martin

    Deepwater Horizon Study Finds Crude Oil Harmful to Bluefin, Yellowfin Tuna This photo from April 24 sponsored by the National Oceanic and Atmospheric Administration, found that crude oil from the 2010 for 87 days, during which time it discharged nearly 5 million barrels of crude oil. Since the spill

  16. DR. DONALD BOESCH NATIONAL COMMISSION ON THE BP DEEPWATER HORIZON OIL SPILL AND

    E-Print Network [OSTI]

    Boynton, Walter R.

    , as the rig's crew completed drilling the exploratory Macondo well deep under the waters of the Gulf of Mexico AND OFFSHORE DRILLING AND TERRY D. GARCIA NATIONAL COMMISSION ON THE BP DEEPWATER HORIZON OIL SPILL AND OFFSHORE DRILLING BEFORE THE COMMITTEE ON TRANSPORTATION AND INFRASTRUCTURE SUBCOMMITTEE ON COAST GUARD

  17. Tracking Oil from the Deepwater Horizon Oil Spill in Barataria Bay Sediments 

    E-Print Network [OSTI]

    Dincer, Zeynep

    2013-05-03

    In April 2010, approximately 4.9 million barrels of oil were accidentally released into the Gulf of Mexico during the Deepwater Horizon Macondo Mc252 Oil Spill. Some of the surface oil was carried by prevailing winds and currents and reached...

  18. Estimating Surface Oil Extent from the Deepwater Horizon Oil Spill using ASCAT Backscatter

    E-Print Network [OSTI]

    Long, David G.

    Estimating Surface Oil Extent from the Deepwater Horizon Oil Spill using ASCAT Backscatter Richard Provo, UT 84602 Abstract--The damping effects of oil on capillary ocean waves alter the backscattered backscatter from the ocean surface uncontaminated by surface oil. Large differences between expected

  19. Subsea Application of Dispersant in Deep Oil Spills: Lessons Learned from the 2010 Deepwater

    E-Print Network [OSTI]

    of Hawaii Abstract On 20 April 2010, an explosion occurred on the Deepwater Horizon (DWH) drilling rig in the Gulf of Mexico killing eleven workers. The blowout preventer failed due to buckling of the drill pipe. The spill persisted for 87 days until it finally was contained by pumping cement through two relief wells

  20. DeepwaterHorizonOilSpill DraftPhaseIIEarlyRestorationPlan

    E-Print Network [OSTI]

    Authority; Department of Environmental Quality; Department of Wildlife and Fisheries; Department of Natural) is a priceless national treasure. Its natural resources ­ water, fish, beaches, reefs, marshes, oil and gas Review Prepared by the Deepwater Horizon Natural Resource Trustees from State of Alabama (Department

  1. Windmills or deepwater drills?: Normative Roles of Technology in Norwegian Resource Extraction Policy debates

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Windmills or deepwater drills?: Normative Roles of Technology in Norwegian Resource Extraction and drilling efforts in the Barents Sea, but also the challenges of harsh weather, darkness, and ice. It also keep drilling? The Present Study Some organizations, such as Statoil and the Foreign Mi- nistry, claim

  2. Late Cretaceous through Paleogene Reconstruction of Pacific Deep-Water Circulation 

    E-Print Network [OSTI]

    Schubert, Jessica

    2012-07-16

    A growing body of Nd isotope data derived from fish debris and Fe-Mn crusts suggests that the Pacific was characterized by deep-water mass formation in both the North and South Pacific during the Early Paleogene. However, the South Pacific source...

  3. Declines in deepwater sculpin Myoxocephalus thompsonii energy density associated with the

    E-Print Network [OSTI]

    Declines in deepwater sculpin Myoxocephalus thompsonii energy density associated thompsonii energy density associated with the disappearance of Diporeia spp. in lakes Huron and Michigan (in 2001 and 2009), and in Lake Huron off Harbor Beach, Michigan (in 2007) for energy density and diet

  4. Dovetail spoke internal permanent magnet machine

    DOE Patents [OSTI]

    Alexander, James Pellegrino (Ballston Lake, NY); EL-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Lokhandwalla, Murtuza (Clifton Park, NY); Shah, Manoj Ramprasad (Latham, NY); VanDam, Jeremy Daniel (West Coxsackie, NY)

    2011-08-23

    An internal permanent magnet (IPM) machine is provided. The IPM machine includes a stator assembly and a stator core. The stator core also includes multiple stator teeth. The stator assembly is further configured with stator windings to generate a stator magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity. The IPM machine also includes a rotor assembly and a rotor core. The rotor core is disposed inside the cavity and configured to rotate about the longitudinal axis. The rotor assembly further includes a shaft. The shaft further includes multiple protrusions alternately arranged relative to multiple bottom structures provided on the shaft. The rotor assembly also includes multiple stacks of laminations disposed on the protrusions and dovetailed circumferentially around the shaft. The rotor assembly further includes multiple pair of permanent magnets for generating a magnetic field, which magnetic field interacts with the stator magnetic field to produce a torque. The multiple pair of permanent magnets are disposed between the stacks. The rotor assembly also includes multiple middle wedges mounted between each pair of the multiple permanent magnets.

  5. Performance improvement of permanent magnet ac motors 

    E-Print Network [OSTI]

    Parsa, Leila

    2005-08-29

    positively to output torque, a five-phase permanent magnet motor with quasi-rectangular back-EMF waveform is supplied with combined fundamental and third harmonic of currents. For modeling and analysis of the motor a 0 3 3 1 1 q d q d frame of reference...

  6. Verification of the WRF model during a high ozone event over Houston, TX 

    E-Print Network [OSTI]

    Ames, Douglas Seeley

    2003-01-01

    High ozone values were observed in Houston, TX during August 25 - September 1, 2000. A comparison of WRF data with observations and MM5 data was conducted to determine the WRF model's performance in simulating the meteorological conditions...

  7. Deepwater Horizon Oil Spill Principal Investigator (PI) Conference Sponsored by the NSTC SOST, hosted by the University of South Florida

    E-Print Network [OSTI]

    Meyers, Steven D.

    Deepwater Horizon Oil Spill Principal Investigator (PI) Conference Sponsored Ballroom · Oil/dispersant - extent and fate Tom Ryerson, National Oceanic and Atmospheric Administration · Oil/dispersant - impacts and mitigation in coastal

  8. Late Cenomanian – Early Turonian Reconstruction of Intermediate and Deep-Water Circulation in the Proto-Indian Ocean 

    E-Print Network [OSTI]

    Tilghman, David S

    2013-09-24

    with widespread burial of organic carbon (Oceanic Anoxic Event 2 - OAE2). Several factors likely promoted organic carbon burial including increased nutrient input, diminished seafloor oxygen levels, density stratification, enhanced upwelling, and sluggish deep-water...

  9. The Deepwater Program : a case study in organizational transformation inspired by the parallel interaction of internal and external core groups

    E-Print Network [OSTI]

    Mansharamani, Vikram, 1974-

    2004-01-01

    This paper attempts to explain why the United States Coast Guard decided to undertake its most recent major capital asset replacement effort-the Deepwater Program-through the use of a systems approach. Several explanations ...

  10. Permanent-magnet switched-flux machine

    DOE Patents [OSTI]

    Trzynadlowski, Andrzej M.; Qin, Ling

    2012-02-21

    A permanent-magnet switched-flux (PMSF) device has an outer rotor mounted to a shaft about a central axis extending axially through the PMSF device. First and second pluralities of permanent-magnets (PMs) are respectively mounted in first and second circles, radially outwardly in first and second transverse planes extending from first and second sections of the central axis adjacent to an inner surface of the outer rotor. An inner stator is coupled to the shaft and has i) a stator core having a core axis co-axial with the central axis; and ii) first and second pluralities of stator poles mounted in first and second circles, radially outwardly from the stator core axis in the first and second transverse planes. The first and second pluralities of PMs each include PMs of alternating polarity.

  11. Permanent-magnet switched-flux machine

    DOE Patents [OSTI]

    Trzynadlowski, Andrzej M.; Qin, Ling

    2011-06-14

    A permanent-magnet switched-flux (PMSF) device has an outer rotor mounted to a shaft about a central axis extending axially through the PMSF device. First and second pluralities of permanent-magnets (PMs) are respectively mounted in first and second circles, radially outwardly in first and second transverse planes extending from first and second sections of the central axis adjacent to an inner surface of the outer rotor. An inner stator is coupled to the shaft and has i) a stator core having a core axis co-axial with the central axis; and ii) first and second pluralities of stator poles mounted in first and second circles, radially outwardly from the stator core axis in the first and second transverse planes. The first and second pluralities of PMs each include PMs of alternating polarity.

  12. Permanent-magnet switched-flux machine

    DOE Patents [OSTI]

    Trzynadlowski, Andrzej M.; Qin, Ling

    2010-01-12

    A permanent-magnet switched-flux (PMSF) device has a ferromagnetic outer stator mounted to a shaft about a central axis extending axially through the PMSF device. Pluralities of top and bottom stator poles are respectively mounted in first and second circles, radially outwardly in first and second transverse planes extending from first and second sections of the central axis adjacent to an inner surface of the ferromagnetic outer stator. A ferromagnetic inner rotor is coupled to the shaft and has i) a rotor core having a core axis co-axial with the central axis; and ii) first and second discs having respective outer edges with first and second pluralities of permanent magnets (PMs) mounted in first and second circles, radially outwardly from the rotor core axis in the first and second transverse planes. The first and second pluralities of PMs each include PMs of alternating polarity.

  13. When Do Commercial Reactors Permanently Shut Down?

    Reports and Publications (EIA)

    2011-01-01

    For those wishing to obtain current data, the following resources are available: U.S. reactors, go to the Energy Information Administration's nuclear reactor shutdown list. (Note: As of April 30, 2010, the last U.S. reactor to permanently shut down was Big Rock Point in 1997.) Foreign Reactors, go to the Power Reactor Information System (PRIS) on the International Atomic Energy Agency's website.

  14. Permanent magnet design for high-speed superconducting bearings

    DOE Patents [OSTI]

    Hull, J.R.; Uherka, K.L.; Abdoud, R.G.

    1996-09-10

    A high temperature superconducting bearing including a permanent magnet rotor levitated by a high temperature superconducting structure is disclosed. The rotor preferably includes one or more concentric permanent magnet rings coupled to permanent magnet ring structures having substantially triangular and quadrangular cross-sections. Both alternating and single direction polarity magnet structures can be used in the bearing. 9 figs.

  15. Crude Injustice in the Gulf: Why Categorical Exclusions for Deepwater Drilling in the Gulf of Mexico are Inconsistent with U.S. International Ocean Law and Policy

    E-Print Network [OSTI]

    Hull, Eric V.

    2011-01-01

    torium on Deepwater Oil Drilling, Demands Environmentalimpacts. The increasing demand for oil continues to pushthe Gulf ecosystem. Increas- ing demand for oil coupled with

  16. Intermediate- to Deep-Water Circulation Changes on Short and Long Time Scales 

    E-Print Network [OSTI]

    Murphy, Daniel Patrick

    2012-07-16

    . Deborah Thomas Oceanic circulation remains one of the poorly understood elements of the global climate system, despite its importance to planetary heat redistribution and carbon cycling. The nature of deep-water formation and circulation in ancient... oceans are even more poorly constrained. In order to understand climate dynamics of past and future climates we must have a better understanding of the role of deep-ocean circulation. In this dissertation I investigated changes in intermediate...

  17. Effect of Side Permanent Magnets for Reluctance Interior Permanent Magnet Reluctance Machines

    SciTech Connect (OSTI)

    Hsu, John S; Lee, Seong T; Wiles, Randy H; Coomer, Chester; Lowe, Kirk T

    2007-01-01

    A traditional electric machine uses two dimensional magnetic flux paths in its rotor. This paper presents the development work on the utilization of the third dimension of a rotor. As an example, the air gap flux of a radial gap interior permanent magnet motor can be significantly enhanced by additional permanent magnets (PM) mounted at the sides of the rotor. A prototype motor built with this concept provided higher efficiency and required a shorter stator core length for the same power output as the Toyota/Prius traction drive motor.

  18. Batch fabrication of precision miniature permanent magnets

    DOE Patents [OSTI]

    Christenson, Todd R. (Albuquerque, NM); Garino, Terry J. (Albuquerque, NM); Venturini, Eugene L. (Albuquerque, NM)

    2002-01-01

    A new class of processes for fabrication of precision miniature rare earth permanent magnets is disclosed. Such magnets typically have sizes in the range 0.1 to 10 millimeters, and dimensional tolerances as small as one micron. Very large magnetic fields can be produced by such magnets, lending to their potential application in MEMS and related electromechanical applications, and in miniature millimeter-wave vacuum tubes. This abstract contains simplifications, and is supplied only for purposes of searching, not to limit or alter the scope or meaning of any claims herein.

  19. Permanent-magnet-less synchronous reluctance system

    DOE Patents [OSTI]

    Hsu, John S

    2012-09-11

    A permanent magnet-less synchronous system includes a stator that generates a magnetic revolving field when sourced by an alternating current. An uncluttered rotor is disposed within the magnetic revolving field and spaced apart from the stator to form an air gap relative to an axis of rotation. The rotor includes a plurality of rotor pole stacks having an inner periphery biased by single polarity of a north-pole field and a south-pole field, respectively. The outer periphery of each of the rotor pole stacks are biased by an alternating polarity.

  20. Strong permanent magnet-assisted electromagnetic undulator

    DOE Patents [OSTI]

    Halbach, Klaus (Berkeley, CA)

    1988-01-01

    This invention discloses an improved undulator comprising a plurality of electromagnet poles located along opposite sides of a particle beam axis with alternate north and south poles on each side of the beam to cause the beam to wiggle or undulate as it travels generally along the beam axis and permanent magnets spaced adjacent the electromagnetic poles on each side of the axis of said particle beam in an orientation sufficient to reduce the saturation of the electromagnet poles whereby the field strength of the electromagnet poles can be increased beyond the normal saturation levels of the electromagnetic poles.

  1. RCRA Assessment Plan for Single-Shell Tank Waste Management Area TX-TY

    SciTech Connect (OSTI)

    Horton, Duane G.

    2007-03-26

    WMA TX-TY contains underground, single-shell tanks that were used to store liquid waste that contained chemicals and radionuclides. Most of the liquid has been removed, and the remaining waste is regulated under the RCRA as modi¬fied in 40 CFR Part 265, Subpart F and Washington State’s Hazardous Waste Management Act . WMA TX-TY was placed in assessment monitoring in 1993 because of elevated specific conductance. A groundwater quality assessment plan was written in 1993 describing the monitoring activities to be used in deciding whether WMA TX-TY had affected groundwater. That plan was updated in 2001 for continued RCRA groundwater quality assessment as required by 40 CFR 265.93 (d)(7). This document further updates the assessment plan for WMA TX-TY by including (1) information obtained from ten new wells installed at the WMA after 1999 and (2) information from routine quarterly groundwater monitoring during the last five years. Also, this plan describes activities for continuing the groundwater assessment at WMA TX TY.

  2. Trading permanent and temporary carbon emissions credits

    SciTech Connect (OSTI)

    Marland, Gregg; Marland, Eric

    2009-08-01

    In this issue of Climatic Change, Van Kooten (2009) addresses an issue that has bedeviled negotiators since the drafting stage of the Kyoto Protocol. If we accept that increasing withdrawals of carbon dioxide from the atmpshere has the same net impact on the climate system as reducing emissions of carbon dioxide to the atmosphere, how do we design a system that allows trading of one for the other? As van Kooten expresses the challenge: 'The problem is that emissions reduction and carbon sequestration, while opposite sides of the same coin in some sense, are not directly comparable, thereby inhibiting their trade in carbon markets.' He explains: 'The difficulty centers on the length of time that mitigation strategies without CO{sub 2} from entering the atmosphere - the duration problem.' While reducing emissions of CO{sub 2} represents an essentially permanent benefit for the atmosphere, capturing CO{sub 2} that has been produced (whether capture is from the atmosphere or directly from, for example, the exhaust from power plants) there is the challenge of storing the carbon adn the risk that it will yet escape to the atmosphere. Permanent benefit to the atmosphere is often not assured for carbon sequestration activities. This is especially true if the carbon is taken up and stored in the biosphere - e.g. in forest trees or agricultural soils.

  3. Overview: Mesozoic through Early Tertiary Stratigraphic Evolution and Deep-water Deposition of the Magallanes Basin, Chile Copyright 2007 by The American Association of Petroleum Geologists. DOI: 10.1306/1240919St563291

    E-Print Network [OSTI]

    Overview: Mesozoic through Early Tertiary Stratigraphic Evolution and Deep-water Deposition the earliest phase of deep-water deposition in the Magallanes foreland basin (Figure 2) (Natland et al., 1974, represents the apex of deep-water sedimentation in the Magallanes basin and was deposited at depths

  4. Monitoring and Assessing Implications of the Deepwater Horizon Oil Spill: Potential Impacts of the Loop Current on Downstream Marine Ecosystems in the

    E-Print Network [OSTI]

    Monitoring and Assessing Implications of the Deepwater Horizon Oil Spill: Potential Impacts and identifying the areas that can be affected by the oil spill. The assessments performed during this cruise.Lamkin@noaa.gov; 3053614226 1. Executive Summary. As part of NOAA's response to the Deepwater Horizon oil spill

  5. Re: Report has been approved: Effects of Building a Sand Barrier Berm to Mitigate the Effects of the Deepwater Horizon Oil Spill on Louisiana Marshes

    E-Print Network [OSTI]

    a Sand Barrier Berm to Mitigate the Effects of the Deepwater Horizon Oil Spill on Louisiana Marshes of Building a Sand Barrier Berm to Mitigate the Effects of the Deepwater Horizon Oil Spill on LouisianaRe: Report has been approved: Effects of Building a Sand Barrier Berm to Mitigate the Effects

  6. Trajectory Forecast as a Rapid Response to the Deepwater Horizon Oil Spill Yonggang Liu, Robert H. Weisberg, Chuanmin Hu, and Lianyuan Zheng

    E-Print Network [OSTI]

    Meyers, Steven D.

    better or worse than the others throughout the event with one excep- tion. The lessons learned fromTrajectory Forecast as a Rapid Response to the Deepwater Horizon Oil Spill Yonggang Liu, Robert H. Petersburg, Florida, USA In response to the Gulf of Mexico Deepwater Horizon oil spill, a Lagrangian

  7. Novel Flux Coupling Machine without Permanent Magnets - U Machine...

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

    Magnets - U Machine Novel Flux Coupling Machine without Permanent Magnets - U Machine 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer...

  8. A mesoscopic network model for permanent set in crosslinked elastomers...

    Office of Scientific and Technical Information (OSTI)

    model for permanent set in crosslinked elastomers A mesoscopic computational model for polymer networks and composites is developed as a coarse-grained representation of the...

  9. On the particle paths and the stagnation points in small-amplitude deep-water waves

    E-Print Network [OSTI]

    Delia Ionescu-Kruse

    2012-02-22

    In order to obtain quite precise information about the shape of the particle paths below small-amplitude gravity waves travelling on irrotational deep water, analytic solutions of the nonlinear differential equation system describing the particle motion are provided. All these solutions are not closed curves. Some particle trajectories are peakon-like, others can be expressed with the aid of the Jacobi elliptic functions or with the aid of the hyperelliptic functions. Remarks on the stagnation points of the small-amplitude irrotational deep-water waves are also made.

  10. Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources

    SciTech Connect (OSTI)

    Russell E. Fray

    2007-05-31

    RPSEA is currently in its first year of performance under contract DE-AC26-07NT42677, Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Program Administration. Significant progress has been made in establishing the program administration policies, procedures, and strategic foundation for future research awards. RPSEA has concluded an industry-wide collaborative effort to identify focus areas for research awards under this program. This effort is summarized in the RPSEA Draft Annual Plan, which is currently under review by committees established by the Secretary of Energy.

  11. Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources

    SciTech Connect (OSTI)

    Russell E. Fray

    2007-06-30

    RPSEA is currently in its first year of performance under contract DE-AC26-07NT42677, Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Program Administration. Progress continues to be made in establishing the program administration policies, procedures, and strategic foundation for future research awards. Significant progress was made in development of the draft program solicitations. In addition, RPSEA personnel continued an aggressive program of outreach to engage the industry and ensure wide industry participation in the research award solicitation process.

  12. Ultra-Deepwater Advisory Committee Elena Melchert Acting Designated Federal Officer

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OF APPLICABLEStatutoryin the Nation's,USDA &Ultra-Deepwater Advisory

  13. Texas Tech University, Lubbock, TX, 2010 Table 1 2009 Texas Research Incentive Program Funding

    E-Print Network [OSTI]

    Rock, Chris

    #12;© Texas Tech University, Lubbock, TX, 2010 #12;7 9 19 22 29 32 39 42 47 51 56 57 67 71 74 80 82 The Once-in-a-Lifetime Opportunity Conceptualizing a New Vision and Mission Environmental (SWOT) Analysis Acknowledgements Strategic Planning Council Texas Tech Administration #12;Guy Bailey President Texas Tech

  14. April 11, 2001 Presentation at BRC, Temple, TX. Hydrological Applications of

    E-Print Network [OSTI]

    . Introduction · AVHRR - Advanced Very High Resolution Radiometer · It is a sensor aboard NOAA - POES. · AVHRR Presentation at BRC, Temple, TX. Potential Evapo-Transpiration · Energy Balance Model Rn = E + H + G Where: Rn2/208 (Grass Reference), u2 = wind velocity(m.s-1), Ta = air temperature (ºC), Ts = land surface

  15. Optimal Deployment Plan of Emission Reduction Technologies for TxDOT's Construction Equipment 

    E-Print Network [OSTI]

    Bari, Muhammad Ehsanul

    2010-10-12

    -road equipment of TxDOT to reduce emissions in a cost effective and optimal manner. Three technologies were considered for deployment in this research, (1) hydrogen enrichment (HE), (2) selective catalytic reduction (SCR) and (3) fuel additive (FA... Gas ....................................................................... 24 Biodiesel ............................................................................ 24 Hydrogen...

  16. ACM SIGGRAPH 2002, San Antonio, TX Modeling the Accumulation of Wind-Driven Snow

    E-Print Network [OSTI]

    O'Brien, James F.

    ACM SIGGRAPH 2002, San Antonio, TX Modeling the Accumulation of Wind-Driven Snow Technical Sketch of snow drifts formed by the accumulation of wind-blown snow near buildings and other obstacles. Our our method is able to model how the snow is convected, deposited, and lifted by the wind. The results

  17. Permanent magnet helicon source for ion propulsion Francis F. Chen

    E-Print Network [OSTI]

    Chen, Francis F.

    Permanent magnet helicon source for ion propulsion Francis F. Chen Electrical Engineering that great savings in size and weight can be obtained by using specially designed permanent magnets (PMs by at least two groups for generating ions for space propulsion: the HDLT concept at the Australian National

  18. Relativistic Engine Based on a Permanent Magnet

    E-Print Network [OSTI]

    Tuval, Miron

    2015-01-01

    Newton's third law states that any action is countered by a reaction of equal magnitude but opposite direction. The total force in a system not affected by external forces is thus zero. However, according to the principles of relativity a signal can not propagate at speeds exceeding the speed of light. Hence the action cannot be generated at the same time with the reaction due to the relativity of simultaneity, thus the total force cannot be null at a given time. The following is a continuation of a previous paper \\cite{Tuval} in which we analyzed the relativistic effects in a system of two current conducting loops. Here the analysis is repeated but one of the loops is replaced by a permanent magnet. It should be emphasized that although momentum can be created in the {\\bf material} part of the system as described in the following work momentum can not be created in the {\\bf physical} system, hence for any momentum that is acquired by matter an opposite momentum is attributed to the electromagnetic field.

  19. Relativistic Engine Based on a Permanent Magnet

    E-Print Network [OSTI]

    Miron Tuval; Asher Yahalom

    2015-06-30

    Newton's third law states that any action is countered by a reaction of equal magnitude but opposite direction. The total force in a system not affected by external forces is thus zero. However, according to the principles of relativity a signal can not propagate at speeds exceeding the speed of light. Hence the action cannot be generated at the same time with the reaction due to the relativity of simultaneity, thus the total force cannot be null at a given time. The following is a continuation of a previous paper \\cite{Tuval} in which we analyzed the relativistic effects in a system of two current conducting loops. Here the analysis is repeated but one of the loops is replaced by a permanent magnet. It should be emphasized that although momentum can be created in the {\\bf material} part of the system as described in the following work momentum can not be created in the {\\bf physical} system, hence for any momentum that is acquired by matter an opposite momentum is attributed to the electromagnetic field.

  20. Heading off the permanent oil crisis

    SciTech Connect (OSTI)

    MacKenzie, J.J.

    1996-11-01

    The 1996 spike in gasoline prices was not a signal of any fundamental worldwide shortage of crude oil. But based on a review of many studies of recoverable crude oil that have been published since the 1950s, it looks as though such a shortfall is now within sight. With world demand for oil growing at 2 percent per year, global production is likely to peak between the years 2007 and 2014. As this time approaches, we can expect prices to rise markedly and, most likely, permanently. Policy changes are needed now to ease the transition to high-priced oil. Oil production will continue, though at a declining rate, for many decades after its peak, and there are enormous amounts of coal, oil sands, heavy oil, and oil shales worldwide that could be used to produce liquid or gaseous substitutes for crude oil, albeit at higher prices. But the facilities for making such synthetic fuels are costly to build and environmentally damaging to operate, and their use would substantially increase carbon dioxide emissions (compared to emissions from products made from conventional crude oil). This paper examines ways of heading of the impending oil crisis. 8 refs., 3 figs.

  1. The search for permanent electric dipole moments

    SciTech Connect (OSTI)

    Kirch, Klaus

    2013-02-13

    Permanent electric dipole moments (EDMs) of fundamental systems with spin - particles, nuclei, atoms or molecules violate parity and time reversal invariance. Invoking the CPT theorem, time reversal violation implies CP violation. Although CP-violation is implemented in the standard electro-weak theory, EDM generated this way remain undetectably small. However, this CP-violation also appears to fail explaining the observed baryon asymmetry of our universe. Extensions of the standard theory usually include new sources of CP violation and often predict sizeable EDMs. EDM searches in different systems are complementary and various efforts worldwide are underway and no finite value has been established yet. The prototype of an EDM search is the pursuit of the EDM of the neutron. It has the longest history and at the same time is at the forefront of present research. The talk aims at giving an overview of the field with emphasis on our efforts within an international collaboration at PSI, nedm.web.psi.ch.

  2. Acute Embryonic or Juvenile Exposure to Deepwater Horizon Crude Oil Impairs the Swimming Performance of Mahi-Mahi (Coryphaena

    E-Print Network [OSTI]

    Grosell, Martin

    Acute Embryonic or Juvenile Exposure to Deepwater Horizon Crude Oil Impairs the Swimming and ecologically important fish species to crude oil during the sensitive early life stages. We show that brief approximately 4 million barrels (6 × 108 L) of crude oil into the northern Gulf of Mexico (GoM).1-3 The DWH

  3. Long-term monitoring data to describe the fate of polycyclic aromatic hydrocarbons in Deepwater Horizon oil submerged off

    E-Print Network [OSTI]

    Clement, Prabhakar

    Clement Environmental Engineering Program, Department of Civil Engineering, Auburn University, AL 36849 The 2010 Deepwater Horizon (DWH) catastrophe had considerable impact on the 50 km long sandy beach sys- tem over the open ocean system in the Gulf of Mexico. Light PAHs, such as naphthalenes, were fully depleted

  4. Fate of Deepwater Horizon oil in Alabama's beach system: Understanding physical evolution processes based on observational data

    E-Print Network [OSTI]

    Clement, Prabhakar

    : Available online 10 December 2014 Keywords: Oil spill Deepwater Horizon spill Beach contamination Polycyclic aromatic hydrocarbons Crude oil spill a b s t r a c t The impact of MC252 oil on northern Gulf of Mexico impacting these beaches was predominantly in the form of water- in-oil (W/O) emulsions, a highly viscous

  5. Deep-Sea Research I 53 (2006) 17181728 A North Atlantic deep-water eddy in the

    E-Print Network [OSTI]

    Miami, University of

    2006-01-01

    Deep-Sea Research I 53 (2006) 1718­1728 A North Atlantic deep-water eddy in the Agulhas Current the deep waters, pinching off an eddy, which later detached from the slope current and was carried. Keywords: Circulation; Indian Ocean; Boundary currents; Agulhas Current; Deep water; Oceanic eddies 1

  6. Deep-Sea Research I 50 (2003) 10791098 An additional deep-water mass in Drake Passage as

    E-Print Network [OSTI]

    Stevens, David

    2003-01-01

    Deep-Sea Research I 50 (2003) 1079­1098 An additional deep-water mass in Drake Passage as revealed Circumpolar Deep Water (LCDW, UCDW), and is concentrated towards the northern continental slope. 3 He water mass analysis (including 3 He as a parameter), we find that deep waters as met at the 43 S Pacific

  7. nh Gi Thit Hi Ti Nguyn Thin Nhin ca V Trn Du Deepwater Horizon Cc D n Qun Franklin

    E-Print Network [OSTI]

    công cng hin nay. Ban Qun Tr ánh Giá Thit Hi Tài Nguyên The Deepwater Horizon xut by d án v gii trí ti/hoc tng cng s dng và/hoc thng ngon ca công chúng i vi các ngun li thiên nhiên này. xut Nâng Cp Các Công

  8. INVESTIGATION OF DEEP-WATER CIRCULATION MODES IN THE EARLY CENOZOIC USING NEODYMIUM ISOTOPES FROM FOSSIL FISH DEBRIS 

    E-Print Network [OSTI]

    Jones, Landon 1989-

    2011-05-10

    , this mode did not operate in the geologic past. A growing body of Nd isotope data from fossil fish debris is being used to reconstruct the ancient mode of deep-water circulation throughout the early Cenozoic greenhouse interval. Recent data from previous...

  9. Development of a Permanent-Magnet Microwave Ion Source for a Sealed-Tube Neutron Generator

    E-Print Network [OSTI]

    Waldmann, Ole

    2011-01-01

    Permanent-Magnet Mi- crowave Ion Source for a Compact High-Yield Neutron Generator,Permanent-Magnet Microwave Ion Source for a Sealed-Tube Neutron Generatorgenerator. Microwave ion sources, however, A permanent-magnet

  10. Characterization of atmospheric ammonia near Fort Worth, TX Part II. Impact of ammonia on particulate matter formation

    E-Print Network [OSTI]

    Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH, USA 8 Earth, USA 2 Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA 3 Now

  11. Spectral-efficiency of multi-antenna links in ad-hoc wireless networks with limited Tx CSI

    E-Print Network [OSTI]

    Govindasamy, Siddhartan

    An asymptotic expression is derived for the mean spectral efficiency of multi-antenna links randomly distributed on a plane in a uniform manner where transmitters (Tx) have Channel-State-Information (CSI) of the channels ...

  12. Proceedings of the ASME 2014 Dynamic Systems and Control Conference October 22-24, 2014, San Antonio, TX, USA

    E-Print Network [OSTI]

    Brennan, Sean

    , San Antonio, TX, USA DSCC2014-6274 DIFFERENTIAL DIAGNOSTICS FOR LITHIUM ION BATTERY CELLS CONNECTED This paper presents a new method for estimating the capac- ity of a lithium ion battery cell in the presence

  13. Permanence : aligning architecture, nuclear waste, and the Public

    E-Print Network [OSTI]

    Maher, John, III (John Edward)

    2014-01-01

    Permanence is intended as a provocation to question the current relationship of time and architecture. Architecture has always had a relationship with time, but historically this relationship has been troubled. In 2013 we ...

  14. Method and apparatus for assembling permanent magnet rotors

    DOE Patents [OSTI]

    Hsu, J.S.; Adams, D.J.

    1999-06-22

    A permanent magnet assembly for assembly in large permanent magnet motors and generators includes a two-piece carrier that can be slid into a slot in the rotor and then secured in place using a set screw. The invention also provides an auxiliary carrier device with guide rails that line up with the teeth of the rotor, so that a permanent magnet assembly can be pushed first into a slot, and then down the slot to its proper location. An auxiliary tool is provided to move the permanent magnet assembly into position in the slot before it is secured in place. Methods of assembling and disassembling the magnet assemblies in the rotor are also disclosed. 2 figs.

  15. Method and apparatus for assembling permanent magnet rotors

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN); Adams, Donald J. (Knoxville, TN)

    1999-01-01

    A permanent magnet assembly (22) for assembly in large permanent magnet (PM) motors and generators includes a two-piece carrier (23, 24) that can be slid into a slot (13) in the rotor (10) and then secured in place using a set screw (37). The invention also provides an auxiliary carrier device (50) with guide rails (51) that line up with the teeth (12) of the rotor, so that a permanent magnet assembly (22) can be pushed first into a slot (13), and then down the slot (13) to its proper location. An auxiliary tool (50) is provided to move the permanent magnet assembly (22) into position in the slot (13) before it is secured in place. Methods of assembling and disassembling the magnet assemblies (22) in the rotor (10) are also disclosed.

  16. Phase-controlled rectification for permanent-magnet downhole alternators

    E-Print Network [OSTI]

    Maher, Patrick L

    2008-01-01

    This thesis develops a method of phase-controlled rectification to be used with permanent-magnet downhole alternators. The design faces unique challenges imposed by the downhole environment. The thesis discusses the design, ...

  17. Temporary and Permanent Buyout Prices in Online Auctions

    E-Print Network [OSTI]

    Gupta, Shobhit

    Increasingly used in online auctions, buyout prices allow bidders to instantly purchase the item listed. We distinguish two types: a temporary buyout option disappears if a bid above the reserve price is made; a permanent ...

  18. Deep-Water Flow over the Lomonosov Ridge in the Arctic Ocean M.-L. TIMMERMANS, P. WINSOR, AND J. A. WHITEHEAD

    E-Print Network [OSTI]

    Winsor, Peter

    the geothermal heat flux or diffusive fluxes at the deep-water boundaries. 1. Introduction The two main basins horizontal or vertical gradients in 14 C in the Canadian Basin (Makarov and Canada Ba- sins) below 2250 m

  19. Crude Injustice in the Gulf: Why Categorical Exclusions for Deepwater Drilling in the Gulf of Mexico are Inconsistent with U.S. International Ocean Law and Policy

    E-Print Network [OSTI]

    Hull, Eric V.

    2011-01-01

    regain control of the well and that drilling the relief wellA MORATORIUM ON ALL DRILLING OF WELLS 1 (2010), available atbillion to build. Drilling a deep-water well can add another

  20. Deep-Diving Cetaceans of the Gulf of Mexico : : Acoustic Ecology and Response to Natural and Anthropogenic Forces Including the Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    Merkens, Karlina Paul

    2013-01-01

    2.4.1 Seasonal and Oil-spill related trends . . 2.4.2 Diel1.4 The Deepwater Horizon Oil Spill . . . . 1.5 DataOil Figure Figure Figure Figure Figure Figure Figure Figure

  1. Crude Injustice in the Gulf: Why Categorical Exclusions for Deepwater Drilling in the Gulf of Mexico are Inconsistent with U.S. International Ocean Law and Policy

    E-Print Network [OSTI]

    Hull, Eric V.

    2011-01-01

    A MORATORIUM ON ALL DRILLING OF WELLS 1 (2010), available atwell and that drilling the relief well could take severalbillion to build. Drilling a deep-water well can add another

  2. Microbial gene functions enriched in the Deepwater Horizon deep-sea oil plume

    SciTech Connect (OSTI)

    Lu, Z.; Deng, Y.; Nostrand, J.D. Van; He, Z.; Voordeckers, J.; Zhou, A.; Lee, Y.-J.; Mason, O.U.; Dubinsky, E.; Chavarria, K.; Tom, L.; Fortney, J.; Lamendella, R.; Jansson, J.K.; D?haeseleer, P.; Hazen, T.C.; Zhou, J.

    2011-06-15

    The Deepwater Horizon oil spill in the Gulf of Mexico is the deepest and largest offshore spill in U.S. history and its impacts on marine ecosystems are largely unknown. Here, we showed that the microbial community functional composition and structure were dramatically altered in a deep-sea oil plume resulting from the spill. A variety of metabolic genes involved in both aerobic and anaerobic hydrocarbon degradation were highly enriched in the plume compared to outside the plume, indicating a great potential for intrinsic bioremediation or natural attenuation in the deep-sea. Various other microbial functional genes relevant to carbon, nitrogen, phosphorus, sulfur and iron cycling, metal resistance, and bacteriophage replication were also enriched in the plume. Together, these results suggest that the indigenous marine microbial communities could play a significant role in biodegradation of oil spills in deep-sea environments.

  3. Review of the independent risk assessment of the proposed Cabrillo liquified natural gas deepwater port project.

    SciTech Connect (OSTI)

    Gritzo, Louis Alan; Hightower, Marion Michael; Covan, John Morgan; Luketa-Hanlin, Anay Josephine

    2006-01-01

    In March 2005, the United States Coast Guard requested that Sandia National Laboratories provide a technical review and evaluation of the appropriateness and completeness of models, assumptions, analyses, and risk management options presented in the Cabrillo Port LNG Deepwater Port Independent Risk Assessment-Revision 1 (Cabrillo Port IRA). The goal of Sandia's technical evaluation of the Cabrillo Port IRA was to assist the Coast Guard in ensuring that the hazards to the public and property from a potential LNG spill during transfer, storage, and regasification operations were appropriately evaluated and estimated. Sandia was asked to review and evaluate the Cabrillo Port IRA results relative to the risk and safety analysis framework developed in the recent Sandia report, ''Guidance on Risk Analysis and Safety Implications of a Large Liquefied Natural Gas (LNG) Spill over Water''. That report provides a framework for assessing hazards and identifying approaches to minimize the consequences to people and property from an LNG spill over water. This report summarizes the results of the Sandia review of the Cabrillo Port IRA and supporting analyses. Based on our initial review, additional threat and hazard analyses, consequence modeling, and process safety considerations were suggested. The additional analyses recommended were conducted by the Cabrillo Port IRA authors in cooperation with Sandia and a technical review panel composed of representatives from the Coast Guard and the California State Lands Commission. The results from the additional analyses improved the understanding and confidence in the potential hazards and consequences to people and property from the proposed Cabrillo Port LNG Deepwater Port Project. The results of the Sandia review, the additional analyses and evaluations conducted, and the resolutions of suggested changes for inclusion in a final Cabrillo Port IRA are summarized in this report.

  4. The use of exploration 3D seismic data to optimise oil exploration in OPL 210 deepwater, Nigeria

    SciTech Connect (OSTI)

    Nelson, L.C.; Lilletveit, R.; Sandvoll, T. [Statoil and BP Alliance, Stavanger (Norway)] [and others

    1995-08-01

    Allied Energy and the Statoil and BP Alliance are currently partners in the OPL 210 license, in deepwater Nigeria. The license has a 5 year initial exploration phase which carries a two well commitment. To optimize the location of these wells in this challenging and costly drilling environment the partnership has decided to acquire extensive exploration 3D seismic data within the block. Interpretation of the first of two planned 3D surveys has led to a much clearer understanding of: (a) The structural segmentation of the prospect and thus a clearer idea of the likely hydrocarbon pool size. (b) The distribution of amplitude anomalies and thus, hopefully, a superior understanding of reservoir distribution and hydrocarbons. Here the limiting factor is clearly the lack of deepwater geophysical calibration, due to the absence of wells. Consequently, conclusions at this stage, are qualitative either than quantative. Combined with detailed seismic stratigraphic and high tech geophysical analysis, these two aspects will assist in the highgrading of segments in the prospect, prior to final decisions on the well locations. The first well, planned for 1995, will be one of the first wells drilled in the Nigerian deepwater area. Examples of both 2D and 3D data will be used to demonstrate the above and some of the first well results will be integrated into our interpretation to highlight how some of our perceptions may have changed.

  5. If yes, date your card was issued: Card number Enclose a photocopy of the front and back of your Permanent Resident, Asylee, or Refugee Card

    E-Print Network [OSTI]

    of your Permanent Resident, Asylee, or Refugee Card Are you a Permanent Resident, Asylee, or Refugee

  6. Permanent-magnet-less machine having an enclosed air gap

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN)

    2012-02-07

    A permanent magnet-less, brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by an alternating current. An uncluttered rotor disposed within the magnetic rotating field is spaced apart from the stator to form an air gap relative to an axis of rotation. A stationary excitation core spaced apart from the uncluttered rotor by an axial air gap and a radial air gap substantially encloses the stationary excitation core. Some permanent magnet-less, brushless synchronous systems include stator core gaps to reduce axial flux flow. Some permanent magnet-less, brushless synchronous systems include an uncluttered rotor coupled to outer laminations. The quadrature-axis inductance may be increased in some synchronous systems. Some synchronous systems convert energy such as mechanical energy into electrical energy (e.g., a generator); other synchronous systems may convert any form of energy into mechanical energy (e.g., a motor).

  7. Permanent-magnet-less machine having an enclosed air gap

    DOE Patents [OSTI]

    Hsu, John S.

    2013-03-05

    A permanent magnet-less, brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by an alternating current. An uncluttered rotor disposed within the magnetic rotating field is spaced apart from the stator to form an air gap relative to an axis of rotation. A stationary excitation core spaced apart from the uncluttered rotor by an axial air gap and a radial air gap substantially encloses the stationary excitation core. Some permanent magnet-less, brushless synchronous systems include stator core gaps to reduce axial flux flow. Some permanent magnet-less, brushless synchronous systems include an uncluttered rotor coupled to outer laminations. The quadrature-axis inductance may be increased in some synchronous systems. Some synchronous systems convert energy such as mechanical energy into electrical energy (e.g., a generator); other synchronous systems may convert any form of energy into mechanical energy (e.g., a motor).

  8. Method of making bonded or sintered permanent magnets

    DOE Patents [OSTI]

    McCallum, R.W.; Dennis, K.W.; Lograsso, B.K.; Anderson, I.E.

    1995-11-28

    An isotropic permanent magnet is made by mixing a thermally responsive, low viscosity binder and atomized rare earth-transition metal (e.g., iron) alloy powder having a carbon-bearing (e.g., graphite) layer thereon that facilitates wetting and bonding of the powder particles by the binder. Prior to mixing with the binder, the atomized alloy powder may be sized or classified to provide a particular particle size fraction having a grain size within a given relatively narrow range. A selected particle size fraction is mixed with the binder and the mixture is molded to a desired complex magnet shape. A molded isotropic permanent magnet is thereby formed. A sintered isotropic permanent magnet can be formed by removing the binder from the molded mixture and thereafter sintering to full density. 14 figs.

  9. Method of making bonded or sintered permanent magnets

    DOE Patents [OSTI]

    McCallum, R.W.; Dennis, K.W.; Lograsso, B.K.; Anderson, I.E.

    1993-08-31

    An isotropic permanent magnet is made by mixing a thermally responsive, low viscosity binder and atomized rare earth-transition metal (e.g., iron) alloy powder having a carbon-bearing (e.g., graphite) layer thereon that facilitates wetting and bonding of the powder particles by the binder. Prior to mixing with the binder, the atomized alloy powder may be sized or classified to provide a particular particle size fraction having a grain size within a given relatively narrow range. A selected particle size fraction is mixed with the binder and the mixture is molded to a desired complex magnet shape. A molded isotropic permanent magnet is thereby formed. A sintered isotropic permanent magnet can be formed by removing the binder from the molded mixture and thereafter sintering to full density.

  10. Spin echo without an external permanent magnetic field

    E-Print Network [OSTI]

    Joakim Bergli; Leonid Glazman

    2006-09-19

    The spin echo techniques aim at the elimination of the effect of a random magnetic field on the spin evolution. These techniques conventionally utlize the application of a permanent field which is much stronger than the random one. The strong field, however, may also modify the magnetic response of the medium containing the spins, thus altering their ``natural'' dynamics. We suggest an iterative scheme for generating a sequence of pulses which create an echo without an external permanent field. The approximation to the ideal echo improves with the sequence length.

  11. From permanence to total availability: a quantum conceptual upgrade

    E-Print Network [OSTI]

    Massimiliano Sassoli de Bianchi

    2011-06-14

    We consider the classical concept of time of permanence and observe that its quantum equivalent is described by a bona fide self-adjoint operator. Its interpretation, by means of the spectral theorem, reveals that we have to abandon not only the idea that quantum entities would be characterizable in terms of spatial trajectories but, more generally, that they would possess the very attribute of spatiality. Consequently, a permanence time shouldn't be interpreted as a "time" in quantum mechanics, but as a measure of the total availability of a quantum entity in participating to a process of creation of a spatial localization.

  12. Case Study: Continuous Commissioning and Energy Management at Alamo Colleges, San Antonio, TX 

    E-Print Network [OSTI]

    Martinez, J. T.

    2014-01-01

    Commissioning® Process Joseph T. Martinez, PCC Carlos Yagua, PE Hiroko Masuda, Juan-Carlos Baltazar, PhD, PE Ahmet Ugursal, PhD Clean Air Through Energy Efficiency (CATEE) Conference, Dallas, Texas. November 18, 2014 ESL-KT-14-11-40 CATEE 2014: Clean Air.... Measurement and Verification 7. Case Study: Alamo Colleges 2 ESL-KT-14-11-40 CATEE 2014: Clean Air Through Efficiency Conference, Dallas, Texas Nov. 18-20 Case Study: Continuous Commissioning® and Energy Management at Alamo Colleges, San Antonio, TX. Joseph...

  13. The environment of deposition of the Dalton Coal (Upper Pennsylvanian), Palo Pinto Co., TX

    E-Print Network [OSTI]

    Lowenstein, Glenn Robert

    1986-01-01

    C. L = 1ff I I I I I I I I I la 3. 75 I I I l l I l 2 7. 9 ~ ~'8 5 8. 5 0 2000 fi 0 500 rn Figure 5. Da1 ton Coa1 i sopach map based on coal thicknesses measured a1ong the outcrop face and in cores. 25 1D in appendi x C...THE ENVIRONMENT OF DEPOSITION OF THE DALTON COAL (UPPER PENNSYI. VANIAN), PALO PINTO CO. , TX. A Thesis by GLENN ROBERT LOWENSTEIN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for tne...

  14. File:USDA-CE-Production-GIFmaps-TX.pdf | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New Pages RecentTempCampApplicationWorksheet 2011.pdfSD.pdf Jump to: navigation, searchTX.pdf

  15. File:03-TX-f - Lease of Land Trade Lands.pdf | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, AlabamaETEC GmbHFarinello GeothermalFiderisInformation 3-FD-d -Open EnergyTX-f -

  16. File:03-TX-g - Lease of Relinquishment Act Lands.pdf | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, AlabamaETEC GmbHFarinello GeothermalFiderisInformation 3-FD-d -Open EnergyTX-f

  17. Design and installation of an ultra deepwater subsea system: How to minimize risks and costs

    SciTech Connect (OSTI)

    Izetti, R.G.; Moreira, J.R.F.

    1994-12-31

    The world`s deepest Subsea Tree was successfully installed offshore Brazil at a water depth of 1,027 m. The psychological barrier of 1,000 m was finally broken. Actually, subsea completion technology reached a point where the fundamental question is no longer whether fields located at water depths beyond 1,000 m can be profitably completed. The key issue now is: is there a better and safer way to do it? PETROBRAS has pursued an aggressive strategy in research and development concept evaluations and various field studies aiming at a continuous decrease in both CAPEX and OPEX. This paper primarily describes the major subsea completion achievements, resulting from this great effort, which among other topics include: implementation of a standardization program; sharp reduction of both subsea completion and drilling time; a new flowline connection method which combines the advantages of both lay-away and pull-in methods; design and future installation of the world first subsea electrical submersible pump; completion equipment simplification and resulting cost reduction. Also addressed are the key safety aspects related to deepwater completions and the equipment design improvement necessary to safely conduct those operations.

  18. Design and installation of an ultra-deepwater subsea system: How to minimize risks and costs

    SciTech Connect (OSTI)

    Izetti, R.G.; Moreira, J.R.F.

    1995-04-01

    The world`s deepest subsea tree was successfully installed offshore Brazil at a water depth of 1,027 m, finally breaking the psychological barrier of 1,000 m. Actually, subsea completion technology has reached a point where the fundamental question no linger is whether fields located at water depths > 1,000 m can be profitably completed; is there a better and safer way to do it is now the key issue. Petrobras has pursued an aggressive strategy in R and D concept evaluations and various field studies aiming at a continuous decrease in both capital and operational expenditures. This paper describes the major subsea completion achievements resulting from this great effort, which include implementation of a standardization program; sharp reduction of subsea completion and drilling time; a new flowline connection method that combines the advantages of lay-away and pull-in methods; design and future installation of the world`s first subsea electrical submersible pump; and completion equipment simplification and resulting cost reduction. Also addressed are the key safety aspects related to deepwater completions and the equipment design improvement necessary to conduct those operations safely.

  19. Permanent carbon dioxide storage in deep-sea sediments

    E-Print Network [OSTI]

    Schrag, Daniel

    Permanent carbon dioxide storage in deep-sea sediments Kurt Zenz House* , Daniel P. Schrag, Cambridge, MA 02138; Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139; and §Earth Engineering Center, Columbia University, New York, NY 10027

  20. Permanent Magnet Ecr Plasma Source With Magnetic Field Optimization

    DOE Patents [OSTI]

    Doughty, Frank C. (Plano, TX); Spencer, John E. (Plano, TX)

    2000-12-19

    In a plasma-producing device, an optimized magnet field for electron cyclotron resonance plasma generation is provided by a shaped pole piece. The shaped pole piece adjusts spacing between the magnet and the resonance zone, creates a convex or concave resonance zone, and decreases stray fields between the resonance zone and the workpiece. For a cylindrical permanent magnet, the pole piece includes a disk adjacent the magnet together with an annular cylindrical sidewall structure axially aligned with the magnet and extending from the base around the permanent magnet. The pole piece directs magnetic field lines into the resonance zone, moving the resonance zone further from the face of the magnet. Additional permanent magnets or magnet arrays may be utilized to control field contours on a local scale. Rather than a permeable material, the sidewall structure may be composed of an annular cylindrical magnetic material having a polarity opposite that of the permanent magnet, creating convex regions in the resonance zone. An annular disk-shaped recurve section at the end of the sidewall structure forms magnetic mirrors keeping the plasma off the pole piece. A recurve section composed of magnetic material having a radial polarity forms convex regions and/or magnetic mirrors within the resonance zone.

  1. Optimal Current Waveforms for Brushless Permanent Magnet Motors

    E-Print Network [OSTI]

    14, 2014 Abstract In this paper we give energy-optimal excitation current waveforms for a permanent work by including a general back-EMF waveform, voltage and cur- rent limits, an arbitrary phase winding. Another advantage of on-line optimization is the ability to adapt in real time to changes in the model

  2. Behavior of fullscale concrete segmented pipelines under permanent ground displacements

    E-Print Network [OSTI]

    Michalowski, Radoslaw L.

    Behavior of fullscale concrete segmented pipelines under permanent ground displacements Junhee, Indiana; d Department of Civil Engineering, Merrimack College, MA ABSTRACT Concrete pipelines are one pipelines and eventually lead to joint failures. In order to understand and model the typical failure

  3. Permanent laser conditioning of thin film optical materials

    DOE Patents [OSTI]

    Wolfe, C.R.; Kozlowski, M.R.; Campbell, J.H.; Staggs, M.; Rainer, F.

    1995-12-05

    The invention comprises a method for producing optical thin films with a high laser damage threshold and the resulting thin films. The laser damage threshold of the thin films is permanently increased by irradiating the thin films with a fluence below an unconditioned laser damage threshold. 9 figs.

  4. Permanent laser conditioning of thin film optical materials

    DOE Patents [OSTI]

    Wolfe, C. Robert (Palo Alto, CA); Kozlowski, Mark R. (Pleasanton, CA); Campbell, John H. (Livermore, CA); Staggs, Michael (Tracy, CA); Rainer, Frank (Livermore, CA)

    1995-01-01

    The invention comprises a method for producing optical thin films with a high laser damage threshold and the resulting thin films. The laser damage threshold of the thin films is permanently increased by irradiating the thin films with a fluence below an unconditioned laser damage threshold.

  5. Permanent Closure of the TAN-664 Underground Storage Tank

    SciTech Connect (OSTI)

    Bradley K. Griffith

    2011-12-01

    This closure package documents the site assessment and permanent closure of the TAN-664 gasoline underground storage tank in accordance with the regulatory requirements established in 40 CFR 280.71, 'Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks: Out-of-Service UST Systems and Closure.'

  6. Permanent magnet with MgB{sub 2} bulk superconductor

    SciTech Connect (OSTI)

    Yamamoto, Akiyasu, E-mail: yamamoto@appchem.t.u-tokyo.ac.jp [The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656 (Japan); JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan); Ishihara, Atsushi; Tomita, Masaru [Railway Technical Research Institute, 2-8-38 Hikari, Kokubunji, Tokyo 185-8540 (Japan); Kishio, Kohji [The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656 (Japan)

    2014-07-21

    Superconductors with persistent zero-resistance currents serve as permanent magnets for high-field applications requiring a strong and stable magnetic field, such as magnetic resonance imaging. The recent global helium shortage has quickened research into high-temperature superconductors (HTSs)—materials that can be used without conventional liquid-helium cooling to 4.2?K. Herein, we demonstrate that 40-K-class metallic HTS magnesium diboride (MgB{sub 2}) makes an excellent permanent bulk magnet, maintaining 3?T at 20?K for 1 week with an extremely high stability (<0.1 ppm/h). The magnetic field trapped in this magnet is uniformly distributed, as for single-crystalline neodymium-iron-boron. Magnetic hysteresis loop of the MgB{sub 2} permanent bulk magnet was determined. Because MgB{sub 2} is a simple-binary-line compound that does not contain rare-earth metals, polycrystalline bulk material can be industrially fabricated at low cost and with high yield to serve as strong magnets that are compatible with conventional compact cryocoolers, making MgB{sub 2} bulks promising for the next generation of Tesla-class permanent-magnet applications.

  7. Determination of Rotor Temperature for an Interior Permanent Magnet Synchronous

    E-Print Network [OSTI]

    Noé, Reinhold

    of the magnet material monitoring its temperature also helps to increase the accuracy of the estimated torque [1Determination of Rotor Temperature for an Interior Permanent Magnet Synchronous Machine Using@lea.upb.de, boecker@lea.upb.de Abstract--In this paper an enhanced method to de- termine the rotor temperature

  8. Calculation Method of Permanent Magnet Pickups for Electric Guitars

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in the 1930s, when Rickenbacker fitted out a guitar with a magnet and coils, thus designing the first magnetic to look at the types of magnetic circuit for the guitar pickups. We consider in this paper the most usual1 Calculation Method of Permanent Magnet Pickups for Electric Guitars G. Lemarquand and V

  9. Phoenix: Detecting and Recovering from Permanent Processor Design Bugs

    E-Print Network [OSTI]

    Torrellas, Josep

    Phoenix: Detecting and Recovering from Permanent Processor Design Bugs with Programmable Hardware://iacoma.cs.uiuc.edu 14 Phoenix Conceptual Design Signature Buffer Bug Detection Unit (BDU) Global Recovery Unit Signal of Phoenix Subsystem SSUBDU Subsystem BDUSSUHUB Neighborhood To Recovery Unit IO Cntrl.L1 CacheFetch Unit

  10. Tank characterization report for single-shell tank 241-TX-104

    SciTech Connect (OSTI)

    FIELD, J.G.

    1999-05-12

    A major function of the Tank Waste Remediation System (TWRS) is to characterize waste in support of waste management and disposal activities at the Hanford Site. Analytical data from sampling and analysis and other available information about a tank are compiled and maintained in a tank characterization report (TCR). This report and its appendices serve as the TCR for single-shell tank 241-TX-104. The objectives of this report are (1) to use characterization data in response to technical issues associated with tank 241-TX-104 waste, and (2) to provide a standard characterization of this waste in terms of a best-basis inventory estimate. Section 2.0 summarizes the response to technical issues, Section 3.0 shows the best-basis inventory estimate, Section 4.0 makes recommendations about the safety status of the tank and additional sampling needs. The appendices contain supporting data and information. This report supports the requirements of the Hanford Federal Facility Agreement and Consent Order (Ecology et al. 1997), Milestone M-44-15c, change request M-44-97-03 to ''issue characterization deliverables consistent with the Waste Information Requirements Document developed for FY 1999'' (Adams et al. 1998).

  11. Tank 241-TX-118, core 236 analytical results for the final report

    SciTech Connect (OSTI)

    ESCH, R.A.

    1998-11-19

    This document is the analytical laboratory report for tank 241-TX-118 push mode core segments collected between April 1, 1998 and April 13, 1998. The segments were subsampled and analyzed in accordance with the Tank 241-TX-118 Push Mode Core sampling and Analysis Plan (TSAP) (Benar, 1997), the Safety Screening Data Quality Objective (DQO) (Dukelow, et al., 1995), the Data Quality Objective to Support Resolution of the Organic Complexant Safety Issue (Organic DQO) (Turner, et al, 1995) and the Historical Model Evaluation Data Requirements (Historical DQO) (Sipson, et al., 1995). The analytical results are included in the data summary table (Table 1). None of the samples submitted for Differential Scanning Calorimetry (DSC) and Total Organic Carbon (TOC) exceeded notification limits as stated in the TSAP (Benar, 1997). One sample exceeded the Total Alpha Activity (AT) analysis notification limit of 38.4{micro}Ci/g (based on a bulk density of 1.6), core 236 segment 1 lower half solids (S98T001524). Appropriate notifications were made. Plutonium 239/240 analysis was requested as a secondary analysis. The statistical results of the 95% confidence interval on the mean calculations are provided by the Tank Waste Remediation Systems Technical Basis Group in accordance with the Memorandum of Understanding (Schreiber, 1997) and are not considered in this report.

  12. Analytical Method of Torque Calculation for Interior Permanent Magnet Synchronous Machines

    E-Print Network [OSTI]

    Tolbert, Leon M.

    Analytical Method of Torque Calculation for Interior Permanent Magnet Synchronous Machines Seong (FEA). Also, this method can be applied to any type of synchronous machine. Index Terms-- equivalent circuit, inductance, permanent magnet machine, synchronous motors, torque. I. NOMENCLATURE BFE brushless

  13. An issue of permanence: assessing the effectiveness of temporary carbon storage

    E-Print Network [OSTI]

    Herzog, Howard J.

    In this paper, we present a method to quantify the effectiveness of carbon mitigation options taking into account the "permanence" of the emissions reduction. While the issue of permanence is most commonly associated with ...

  14. A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator

    E-Print Network [OSTI]

    Waldmann, Ole

    2011-01-01

    A Permanent-Magnet Microwave Ion Source for a Compact High-A Permanent-Magnet Microwave Ion Source for a Compact High-on the development of a microwave ion source that will be

  15. Feedback Control of a Permanent Magnet Biased, Homopolar Magnetic Bearing System 

    E-Print Network [OSTI]

    Wadhvani, Vishal Ashok

    2011-08-08

    was to develop a permanent magnet biased magnetic bearing system using high temperature (HT) permanent magnets (PM) developed by EEC. This system was designed for high performance, high temperature (1000F) and high speed applications. The entire system consisted...

  16. EIS-0412: Federal Loan Guarantee to Support Construction of the TX Energy LLC, Industrial Gasification Facility near Beaumont, Texas

    Broader source: Energy.gov [DOE]

    The Department of Energy is assessing the potential environmental impacts for its proposed action of issuing a Federal loan guarantee to TX Energy, LLC (TXE). TXE submitted an application to DOE under the Federal loan guarantee program pursuant to the Energy Policy Act of 2005 (EPAct 2005) to support construction of the TXE industrial Gasification Facility near Beaumont, Texas.

  17. Hybrid-secondary uncluttered permanent magnet machine and method

    DOE Patents [OSTI]

    Hsu, John S.

    2005-12-20

    An electric machine (40) has a stator (43), a permanent magnet rotor (38) with permanent magnets (39) and a magnetic coupling uncluttered rotor (46) for inducing a slip energy current in secondary coils (47). A dc flux can be produced in the uncluttered rotor when the secondary coils are fed with dc currents. The magnetic coupling uncluttered rotor (46) has magnetic brushes (A, B, C, D) which couple flux in through the rotor (46) to the secondary coils (47c, 47d) without inducing a current in the rotor (46) and without coupling a stator rotational energy component to the secondary coils (47c, 47d). The machine can be operated as a motor or a generator in multi-phase or single-phase embodiments and is applicable to the hybrid electric vehicle. A method of providing a slip energy controller is also disclosed.

  18. System Cost Analysis for an Interior Permanent Magnet Motor

    SciTech Connect (OSTI)

    Peter Campbell

    2008-08-01

    The objective of this program is to provide an assessment of the cost structure for an interior permanent magnet ('IPM') motor which is designed to meet the 2010 FreedomCAR specification. The program is to evaluate the range of viable permanent magnet materials for an IPM motor, including sintered and bonded grades of rare earth magnets. The study considers the benefits of key processing steps, alternative magnet shapes and their assembly methods into the rotor (including magnetization), and any mechanical stress or temperature limits. The motor's costs are estimated for an annual production quantity of 200,000 units, and are broken out into such major components as magnetic raw materials, processing and manufacturing. But this is essentially a feasibility study of the motor's electromagnetic design, and is not intended to include mechanical or thermal studies as would be done to work up a selected design for production.

  19. Grain Refinement of Permanent Mold Cast Copper Base Alloys

    SciTech Connect (OSTI)

    M.Sadayappan; J.P.Thomson; M.Elboujdaini; G.Ping Gu; M. Sahoo

    2005-04-01

    Grain refinement is a well established process for many cast and wrought alloys. The mechanical properties of various alloys could be enhanced by reducing the grain size. Refinement is also known to improve casting characteristics such as fluidity and hot tearing. Grain refinement of copper-base alloys is not widely used, especially in sand casting process. However, in permanent mold casting of copper alloys it is now common to use grain refinement to counteract the problem of severe hot tearing which also improves the pressure tightness of plumbing components. The mechanism of grain refinement in copper-base alloys is not well understood. The issues to be studied include the effect of minor alloy additions on the microstructure, their interaction with the grain refiner, effect of cooling rate, and loss of grain refinement (fading). In this investigation, efforts were made to explore and understand grain refinement of copper alloys, especially in permanent mold casting conditions.

  20. Permanent magnet machine with windings having strand transposition

    DOE Patents [OSTI]

    Qu, Ronghai (Clifton Park, NY); Jansen, Patrick Lee (Scotia, NY)

    2009-04-21

    This document discusses, among other things, a stator with transposition between the windings or coils. The coils are free from transposition to increase the fill factor of the stator slots. The transposition at the end connections between an inner coil and an outer coil provide transposition to reduce circulating current loss. The increased fill factor reduces further current losses. Such a stator is used in a dual rotor, permanent magnet machine, for example, in a compressor pump, wind turbine gearbox, wind turbine rotor.

  1. Permanent split capacitor single phase electric motor system

    DOE Patents [OSTI]

    Kirschbaum, H.S.

    1984-08-14

    A permanent split capacitor single phase electric motor achieves balanced operation at more than one operating point by adjusting the voltage supplied to the main and auxiliary windings and adjusting the capacitance in the auxiliary winding circuit. An intermediate voltage tap on an autotransformer supplies voltage to the main winding for low speed operation while a capacitive voltage divider is used to adjust the voltage supplied to the auxiliary winding for low speed operation. 4 figs.

  2. Permanent Magnet Development for Automotive Traction Motors | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy Bills andOrder 422.1, CONDUCT PDepartmentOrderEnergy Permanent Magnet

  3. Optimum Control for Interior Permanent Magnet Synchronous Motors (IPMSM) in Constant

    E-Print Network [OSTI]

    Noé, Reinhold

    Optimum Control for Interior Permanent Magnet Synchronous Motors (IPMSM) in Constant Torque and Electrical Drives, Paderborn, Germany Abstract--Interior Permanent Magnet Synchronous Motors (IPMSM) gain-power speed area. A widespread electrical machine used for this purpose is the Interior Permanent Magnet

  4. Direct Torque Control for Interior Permanent Magnet Synchronous Motors with Respect to Optimal Efficiency

    E-Print Network [OSTI]

    Noé, Reinhold

    applications. Highly utilized machines are often designed as interior permanent magnet synchronous motorsDirect Torque Control for Interior Permanent Magnet Synchronous Motors with Respect to Optimal@lea.upb.de, boecker@lea.upb.de URL: http://wwwlea.upb.de Keywords «Interior permanent magnet synchronous motor

  5. A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator

    E-Print Network [OSTI]

    Waldmann, Ole

    2011-01-01

    permanent-magnet microwave ion source for the high-yield neutron generator.Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron GeneratorPermanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator ?

  6. High-Energy Composite Permanent Magnets: High-Energy Permanent Magnets for Hybrid Vehicles and Alternative Energy

    SciTech Connect (OSTI)

    2010-02-15

    Broad Funding Opportunity Announcement Project: The University of Delaware is developing permanent magnets that contain less rare earth material and produce twice the energy of the strongest rare earth magnets currently available. The University of Delaware is creating these magnets by mixing existing permanent magnet materials with those that are more abundant, like iron. Both materials are first prepared in the form of nanoparticles via techniques ranging from wet chemistry to ball milling. After that, the nanoparticles must be assembled in a 3-D array and consolidated at low temperatures to form a magnet. With small size particles and good contact between these two materials, the best qualities of each allow for the development of exceptionally strong composite magnets.

  7. UK Oil and Gas Collaborative Doctoral Training Centre (2014 start) Project Title: Environmental assessment of deep-water sponge fields in relation to oil and gas

    E-Print Network [OSTI]

    Henderson, Gideon

    UK Oil and Gas Collaborative Doctoral Training Centre (2014 start) Project Title: Environmental assessment of deep-water sponge fields in relation to oil and gas activity: a west of Shetland case study industry and government identified sponge grounds in areas of interest to the oil and gas sector

  8. 2534 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 50, NO. 7, JULY 2012 Mapping Surface Oil Extent From the Deepwater

    E-Print Network [OSTI]

    Long, David G.

    THE OIL spill from the Deepwater Horizon oil rig in the Gulf of Mexico is one of the largest environmental of Mexico covered a sufficiently large area to be observed by the European Space Agency Advanced on the ocean surface is beneficial for estimating the amount of oil as a function of time and its impact

  9. DEEPWATER HORIZON OIL SPILL ESTIMATE: UPDATE JUNE 11, 2010 by Professor Satish Nagarajaiah, Rice University (www.ruf.rice.edu/~nagaraja &

    E-Print Network [OSTI]

    Nagarajaiah, Satish

    DEEPWATER HORIZON OIL SPILL ESTIMATE: UPDATE JUNE 11, 2010 by Professor Satish Nagarajaiah, Rice. http://www.nytimes.com/2010/06/11/us/11spill.html?hp New Estimates Double Rate of Oil Flowing on Thursday essentially doubled its estimate of how much oil has been spewing from the out-of-control BP well

  10. Of the estimated 5 million barrels of crude oil released into the Gulf of Mexico from the Deepwater Horizon oil spill, a

    E-Print Network [OSTI]

    Weston, Ken

    Of the estimated 5 million barrels of crude oil released into the Gulf of Mexico from the Deepwater Horizon oil spill, a fraction washed ashore onto sandy beaches from Louisiana to the Florida panhandle. Researchers at the MagLab compare the detailed molecular analysis of hydrocarbons in oiled sands from

  11. nh gi Tn tht Ti nguyn Thin nhin Trn du Deepwater Horizon D n phc hi C bin ti B Bin Quc Gia

    E-Print Network [OSTI]

    Horizon. Sau s c tràn du Deepwater Horizon, mt lng áng k du t n bãi bin dc theo Florida Panhandle. Trong vi C rùa( Thallasiumtestudium ) , loài ph bin nht ti thm c bin GUIS 3 ) t các im quan trc o lng và

  12. Method for forming permanent magnets with different polarities for use in microelectromechanical devices

    DOE Patents [OSTI]

    Roesler, Alexander W. (Tijeras, NM); Christenson, Todd R. (Albuquerque, NM)

    2007-04-24

    Methods are provided for forming a plurality of permanent magnets with two different north-south magnetic pole alignments for use in microelectromechanical (MEM) devices. These methods are based on initially magnetizing the permanent magnets all in the same direction, and then utilizing a combination of heating and a magnetic field to switch the polarity of a portion of the permanent magnets while not switching the remaining permanent magnets. The permanent magnets, in some instances, can all have the same rare-earth composition (e.g. NdFeB) or can be formed of two different rare-earth materials (e.g. NdFeB and SmCo). The methods can be used to form a plurality of permanent magnets side-by-side on or within a substrate with an alternating polarity, or to form a two-dimensional array of permanent magnets in which the polarity of every other row of the array is alternated.

  13. A clip-on Zeeman slower using toroidal permanent magnets

    SciTech Connect (OSTI)

    Krzyzewski, S. P.; Akin, T. G.; Dahal, Parshuram; Abraham, E. R. I. [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019 (United States)

    2014-10-15

    We present the design of a zero-crossing Zeeman slower for {sup 85}Rb using rings of flexible permanent magnets. The design is inexpensive, requires no power or cooling, and can be easily attached and removed for vacuum maintenance. We show theoretically that such a design can reproduce a magnetic field profile of a standard zero-crossing Zeeman slower. Experimental measurements of a prototype and comparisons to theoretical simulations demonstrate the feasibility of the design and point toward future improvements. Simulations show an atom flux similar to other Zeeman slowers.

  14. A strong permanent magnet-assisted electromagnetic undulator

    DOE Patents [OSTI]

    Halbach, K.

    1987-01-30

    This invention discloses an improved undulator comprising a plurality of electromagnet poles located along opposite sides of a particle beam axis with alternate north and south poles on each side of the beam to cause the beam to wiggle or undulate as it travels generally along the beam axis and permanent magnets spaced adjacent the electromagnetic poles on each side of the axis of said particle beam in an orientation sufficient to reduce the saturation of the electromagnet poles whereby the field strength of the electromagnet poles can be increased beyond the normal saturation levels of the electromagnetic poles. 4 figs.

  15. Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation

    SciTech Connect (OSTI)

    Wiles, R.H.

    2005-10-07

    In a conventional permanent magnet (PM) machine, the air-gap flux produced by the PM is fixed. It is difficult to enhance the air-gap flux density due to limitations of the PM in a series-magnetic circuit. However, the air-gap flux density can be weakened by using power electronic field weakening to the limit of demagnetization of the PMs. This paper presents the test results of controlling the PM air-gap flux density through the use of a stationary brushless excitation coil in a reluctance interior permanent magnet with brushless field excitation (RIPM-BFE) motor. Through the use of this technology the air-gap flux density can be either enhanced or weakened. There is no concern with demagnetizing the PMs during field weakening. The leakage flux of the excitation coil through the PMs is blocked. The prototype motor built on this principle confirms the concept of flux enhancement and weakening through the use of excitation coils.

  16. Adjustable permanent quadrupoles for the next linear collider

    SciTech Connect (OSTI)

    James T. Volk et al.

    2001-06-22

    The proposed Next Linear Collider (NLC) will require over 1400 adjustable quadrupoles between the main linacs' accelerator structures. These 12.7 mm bore quadrupoles will have a range of integrated strength from 0.6 to 138 Tesla, with a maximum gradient of 141 Tesla per meter, an adjustment range of +0 to {minus}20% and effective lengths from 324 mm to 972 mm. The magnetic center must remain stable to within 1 micron during the 20% adjustment. In an effort to reduce costs and increase reliability, several designs using hybrid permanent magnets have been developed. Four different prototypes have been built. All magnets have iron poles and use Samarium Cobalt to provide the magnetic fields. Two use rotating permanent magnetic material to vary the gradient, one uses a sliding shunt to vary the gradient and the fourth uses counter rotating magnets. Preliminary data on gradient strength, temperature stability, and magnetic center position stability are presented. These data are compared to an equivalent electromagnetic prototype.

  17. Formation of three-dimensional surface waves on deep-water using elliptic solutions of nonlinear Schr\\"odinger equation

    E-Print Network [OSTI]

    Sajjadi, Shahrdad G; Drullion, Frederique

    2014-01-01

    A review of three-dimensional waves on deep-water is presented. Three forms of three dimensionality, namely oblique, forced and spontaneous type, are identified. An alternative formulation for these three-dimensional waves is given through cubic nonlinear Schr\\"odinger equation. The periodic solutions of the cubic nonlinear Schr\\"odinger equation are found using Weierstrass elliptic $\\wp$ functions. It is shown that the classification of solutions depends on the boundary conditions, wavenumber and frequency. For certain parameters, Weierstrass $\\wp$ functions are reduced to periodic, hyperbolic or Jacobi elliptic functions. It is demonstrated that some of these solutions do not have any physical significance. An analytical solution of cubic nonlinear Schr\\"odinger equation with wind forcing is also obtained which results in how groups of waves are generated on the surface of deep water in the ocean. In this case the dependency on the energy-transfer parameter, from wind to waves, make either the groups of wav...

  18. Reservoir fracture mapping using microearthquakes: Austin chalk, Giddings field, TX and 76 field, Clinton Co., KY

    SciTech Connect (OSTI)

    Phillips, W.S.; Rutledge, J.T.; Gardner, T.L.; Fairbanks, T.D.; Miller, M.E.; Schuessler, B.K.

    1996-11-01

    Patterns of microearthquakes detected downhole defined fracture orientation and extent in the Austin chalk, Giddings field, TX and the 76 field, Clinton Co., KY. We collected over 480 and 770 microearthquakes during hydraulic stimulation at two sites in the Austin chalk, and over 3200 during primary production in Clinton Co. Data were of high enough quality that 20%, 31% and 53% of the events could be located, respectively. Reflected waves constrained microearthquakes to the stimulated depths at the base of the Austin chalk. In plan view, microearthquakes defined elongate fracture zones extending from the stimulation wells parallel to the regional fracture trend. However, widths of the stimulated zones differed by a factor of five between the two Austin chalk sites, indicating a large difference in the population of ancillary fractures. Post-stimulation production was much higher from the wider zone. At Clinton Co., microearthquakes defined low-angle, reverse-fault fracture zones above and below a producing zone. Associations with depleted production intervals indicated the mapped fractures had been previously drained. Drilling showed that the fractures currently contain brine. The seismic behavior was consistent with poroelastic models that predicted slight increases in compressive stress above and below the drained volume.

  19. Refining: moods and modes for 1984. [From NPRA meeting, San Antonio, TX 3/84

    SciTech Connect (OSTI)

    Not Available

    1984-04-11

    Thousands of refining experts met in March in San Antonio, TX at the 82nd meeting of the National Petroleum Refiners Association, including many international oil-industry officials and executives. For major US refiners, the mood was decidedly optimistic, because: (1) for a number of refiners, negative margins on many crude oils that persisted even after the March 1983 price adjustment by OPEC are finally improving as capacities for upgrading residual fuel into more-valuable light products continue to come onstream; and (2) multinational oil companies, while concerned about downstream market penetration by producing countries, nevertheless expressed the feeling that this would probably further reduce the negotiating power of OPEC. For smaller, nonmajor refiners, the mood was one of concern: in the US, 97 refineries have officially closed since 1981, most of them smaller, inefficient facilities. There was optimism by all about environmental and social concerns, specifically acid rain and lead pollution. For the national oil companies of less-developed countries, a vicious circle emerged concerning the economic ramifications of the continuing development of catalysts for cracking heavy feedstock. This issue presents the fuel price/tax series and industrial fuel prices for March 1984 for countries of the Eastern Hemisphere.

  20. The use of a permanent magnet for water content measurements of wood chips

    E-Print Network [OSTI]

    2001-01-01

    of a Permanent Magnet for Water Content Measurements of Wooda device that measures the water content of wood chips, pulpsystem. The results of water content measurements in wood

  1. Vehicle Technologies Office Merit Review 2014: Permanent Magnet Development for Automotive Traction Motors

    Broader source: Energy.gov [DOE]

    Presentation given by Ames Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about permanent magnet development...

  2. Innovative Sensors for Pipeline Crawlers: Rotating Permanent Magnet Inspection

    SciTech Connect (OSTI)

    J. Bruce Nestleroth; Richard J. Davis; Stephanie Flamberg

    2006-09-30

    Internal inspection of pipelines is an important tool for ensuring safe and reliable delivery of fossil energy products. Current inspection systems that are propelled through the pipeline by the product flow cannot be used to inspect all pipelines because of the various physical barriers they may encounter. To facilitate inspection of these ''unpiggable'' pipelines, recent inspection development efforts have focused on a new generation of powered inspection platforms that are able to crawl slowly inside a pipeline and can maneuver past the physical barriers that limit internal inspection applicability, such as bore restrictions, low product flow rate, and low pressure. The first step in this research was to review existing inspection technologies for applicability and compatibility with crawler systems. Most existing inspection technologies, including magnetic flux leakage and ultrasonic methods, had significant implementation limitations including mass, physical size, inspection energy coupling requirements and technology maturity. The remote field technique was the most promising but power consumption was high and anomaly signals were low requiring sensitive detectors and electronics. After reviewing each inspection technology, it was decided to investigate the potential for a new inspection method. The new inspection method takes advantage of advances in permanent magnet strength, along with their wide availability and low cost. Called rotating permanent magnet inspection (RPMI), this patent pending technology employs pairs of permanent magnets rotating around the central axis of a cylinder to induce high current densities in the material under inspection. Anomalies and wall thickness variations are detected with an array of sensors that measure local changes in the magnetic field produced by the induced current flowing in the material. This inspection method is an alternative to the common concentric coil remote field technique that induces low-frequency eddy currents in ferromagnetic pipes and tubes. Since this is a new inspection method, both theory and experiment were used to determine fundamental capabilities and limitations. Fundamental finite element modeling analysis and experimental investigations performed during this development have led to the derivation of a first order analytical equation for designing rotating magnetizers to induce current and positioning sensors to record signals from anomalies. Experimental results confirm the analytical equation and the finite element calculations provide a firm basis for the design of RPMI systems. Experimental results have shown that metal loss anomalies and wall thickness variations can be detected with an array of sensors that measure local changes in the magnetic field produced by the induced current flowing in the material. The design exploits the phenomenon that circumferential currents are easily detectable at distances well away from the magnets. Current changes at anomalies were detectable with commercial low cost Hall Effect sensors. Commercial analog to digital converters can be used to measure the sensor output and data analysis can be performed in real time using PC computer systems. The technology was successfully demonstrated during two blind benchmark tests where numerous metal loss defects were detected. For this inspection technology, the detection threshold is a function of wall thickness and corrosion depth. For thinner materials, the detection threshold was experimentally shown to be comparable to magnetic flux leakage. For wall thicknesses greater than three tenths of an inch, the detection threshold increases with wall thickness. The potential for metal loss anomaly sizing was demonstrated in the second benchmarking study, again with accuracy comparable to existing magnetic flux leakage technologies. The rotating permanent magnet system has the potential for inspecting unpiggable pipelines since the magnetizer configurations can be sufficiently small with respect to the bore of the pipe to pass obstructions that limit the application of many i

  3. Performance of An Adjustable Strength Permanent Magnet Quadrupole

    SciTech Connect (OSTI)

    Gottschalk, S.C.; DeHart, T.E.; Kangas, K.W.; /STI Optronics, Bellevue; Spencer, C.M.; /SLAC; Volk, J.T.; /Fermilab

    2006-03-01

    An adjustable strength permanent magnet quadrupole suitable for use in Next Linear Collider has been built and tested. The pole length is 42cm, aperture diameter 13mm, peak pole tip strength 1.03Tesla and peak integrated gradient * length (GL) is 68.7 Tesla. This paper describes measurements of strength, magnetic CL and field quality made using an air bearing rotating coil system. The magnetic CL stability during -20% strength adjustment proposed for beam based alignment was < 0.2 microns. Strength hysteresis was negligible. Thermal expansion of quadrupole and measurement parts caused a repeatable and easily compensated change in the vertical magnetic CL. Calibration procedures as well as CL measurements made over a wider tuning range of 100% to 20% in strength useful for a wide range of applications will be described. The impact of eddy currents in the steel poles on the magnetic field during strength adjustments will be reported.

  4. Changes in Native Aquatic Vegetation, Associated Fish Assemblages, and Food Habits of Largemouth Bass (Micropterus salmoides) Following the Addition of Triploid Grass Carp to Manage Hydrilla (Hydrilla Verticillata) in Lake Conroe, TX 

    E-Print Network [OSTI]

    Ireland, Patrick Alexander

    2011-10-21

    Nuisance aquatic vegetation (mainly Hydrilla Verticillata ) has become problematic in Lake Conroe, TX. Consequently, triploid grass carp (Ctenopharynogodon idella) were stocked at densities sufficient to completely denude ...

  5. Annual Report: EPAct Complementary Program's Ultra-Deepwater R&D Portfolio and Unconventional Resources R&D Portfolio (30 September 2012)

    SciTech Connect (OSTI)

    none,; Rose, Kelly; Hakala, Alexandra; Guthrie, George

    2012-09-30

    This report summarizes FY13 research activities performed by the National Energy Technology Laboratory (NETL), Office of Research and Development (ORD), along with its partners in the Regional University Alliance (RUA) to fulfill research needs under the Energy Policy Act of 2005 (EPAct) Section 999?s Complementary Program. Title IX, Subtitle J, Section 999A(d) of EPAct 2005 authorizes $50 million per year of federal oil and gas royalties, rents and bonus payments for an oil and natural gas research and development effort, the Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Research Program. Section 999 further prescribes four program elements for the effort, one of which is the Complementary Research Program that is to be performed by NETL. This document lays out the plan for the research portfolio for the Complementary Research Program, with an emphasis on the 2013 funding. The Complementary Program consists of two research portfolios focused on domestic resources: (1) the Deepwater and Ultra-Deepwater Portfolio (UDW) (focused on hydrocarbons in reservoirs in extreme environments) and (2) the Unconventional Resources Portfolio (UCR) (focused on hydrocarbons in shale reservoirs). These two portfolios address the science base that enables these domestic resources to be produced responsibly, informing both regulators and operators. NETL is relying on a core Department of Energy-National Energy Technology Laboratory (DOE-NETL) competency in engineered-natural systems to develop this science base, allowing leveraging of decades of investment. NETL?s Complementary Research Program research portfolios support the development of unbiased research and information for policymakers and the public, performing rapid predictions of possible outcomes associated with unexpected events, and carrying out quantitative assessments for energy policy stakeholders that accurately integrate the risks of safety and environmental impacts. The objective of this body of work is to build the scientific understanding and assessment tools necessary to develop the confidence that key domestic oil and gas resources can be produced safely and in an environmentally sustainable way. For the Deepwater and Ultra-Deepwater Portfolio, the general objective is to develop a scientific base for predicting and quantifying potential risks associated with exploration and production in extreme offshore environments. This includes: (1) using experimental studies to improve understanding of key parameters (e.g., properties and behavior of materials) tied to loss-of-control events in deepwater settings, (2) compiling data on spatial variability for key properties used to characterize and simulate the natural and engineered components involved in extreme offshore settings, and (3) utilizing findings from (1) and (2) in conjunction with integrated assessment models to model worst-case scenarios, as well as assessments of most likely scenarios relative to potential risks associated with flow assurance and loss of control. This portfolio and approach is responsive to key Federal-scale initiatives including the Ocean Energy Safety Advisory Committee (OESC). In particular, the findings and recommendations of the OESC?s Spill Prevention Subcommittee are addressed by aspects of the Complementary Program research. The Deepwater and Ultra-Deepwater Portfolio is also aligned with some of the goals of the United States- Department of the Interior (US-DOI) led Alaska Interagency Working Group (AIWG) which brings together state, federal, and tribal government personnel in relation to energy-related issues and needs in the Alaskan Arctic. For the Unconventional Fossil Resources Portfolio, the general objective is to develop a sufficient scientific base for predicting and quantifying potential risks associated with the oil/gas resources in shale reservoirs that require hydraulic fracturing and/or other engineering measures to produce. The major areas of focus include: (1) improving predictions of fugitive methane and greenhouse gas emissions, (2) pr

  6. 3-D visualisation and interpretation of seismic attributes extracted from large 3-D seismic datasets: Subregional and prospect evaluation, deepwater Nigeria

    SciTech Connect (OSTI)

    Sola, M.; Haakon Nordby, L.; Dailey, D.V.; Duncan, E.A. (BP and Statoil Alliance, Stavanger (Norway))

    1996-01-01

    High resolution 3-D visualization of horizon interpretation and seismic attributes from large 3-D seismic surveys in deepwater Nigeria has greatly enhanced the exploration team's ability to quickly recognize prospective segments of subregional and prospect specific scale areas. Integrated workstation generated structure, isopach and extracted horizon consistent, interval and windowed attributes are particularly useful in illustrating the complex structural and stratigraphical prospectivity of deepwater Nigeria. Large 3-D seismic volumes acquired over 750 square kilometers can be manipulated within the visualization system with attribute tracking capability that allows for real time data interrogation and interpretation. As in classical seismic stratigraphic studies, pattern recognition is fundamental to effective depositions facies interpretation and reservoir model construction. The 3-D perspective enhances the data interpretation through clear representation of relative scale, spatial distribution and magnitude of attributes. In deepwater Nigeria, many prospective traps rely on an interplay between syndepositional structure and slope turbidite depositional systems. Reservoir systems in many prospects appear to be dominated by unconfined to moderately focused slope feeder channel facies. These units have spatially complex facies architecture with feeder channel axes separated by extensive interchannel areas. Structural culminations generally have a history of initial compressional folding with late in extensional collapse and accommodation faulting. The resulting complex trap configurations often have stacked reservoirs over intervals as thick as 1500 meters. Exploration, appraisal and development scenarios in these settings can be optimized by taking full advantage of integrating high resolution 3-D visualization and seismic workstation interpretation.

  7. Current Controller with Defined Dynamic Behavior for an Interior Permanent Magnet

    E-Print Network [OSTI]

    Noé, Reinhold

    Current Controller with Defined Dynamic Behavior for an Interior Permanent Magnet Synchronous Motor combustion vehicles already provide. Today's modern HEV and EV mostly include interior permanent magnet]. The required torque, which is the reference variable for these applications, is generated by choosing

  8. Real-Time Capable Methods to Determine the Magnet Temperature of Permanent Magnet

    E-Print Network [OSTI]

    Noé, Reinhold

    ) is widely spread in industrial applications. Due to the development of high energy permanent magnet Motors -- A Review Oliver Wallscheid, Tobias Huber, Wilhelm Peters, Joachim B¨ocker Power Electronics}@lea.upb.de Abstract--The permanent magnet synchronous motor (PMSM) is widely used in highly utilised automotive

  9. Size Reduction of Permanent Magnet Generators for Wind Turbines with Higher Energy Density

    E-Print Network [OSTI]

    McCalley, James D.

    . Currently, the U.S has 60GW installed wind capacity; this translates to 3.6% of total electricity generation [1]. The U.S. Department of Energy has proposed that 20% of electricity generation in the U.S. should to DFIGs. II. PERMANENT MAGNET GENERATORS A. Fundamental Principles In PMGs, the permanent magnets provide

  10. Monitoring Critical Temperatures in Permanent Magnet Synchronous Motors Using Low-Order

    E-Print Network [OSTI]

    Noé, Reinhold

    Monitoring Critical Temperatures in Permanent Magnet Synchronous Motors Using Low-Order Thermal motors is crucial for preventing shortened motor life spans due to excessive thermal stress. With regard to interior permanent magnet synchronous motors (IPMSM), critical temperatures typically occur in the magnets

  11. GUIDELINES AND INFORMATION REGARDING THE TENURE, PERMANENT STATUS AND PROMOTION PROCESS FOR 2010-2011

    E-Print Network [OSTI]

    Roy, Subrata

    1 GUIDELINES AND INFORMATION REGARDING THE TENURE, PERMANENT STATUS AND PROMOTION PROCESS FOR 2010. Eligibility for Tenure and Permanent Status III. Procedures IV. Additional Information for Chairs and Directors V. Additional Information for College Committees and Deans VI. Preparing the Packets: Guidelines

  12. Tenure/Permanent Status Timeline (after the March 2013 regulation change)

    E-Print Network [OSTI]

    Watson, Craig A.

    year. The tenure/permanent status Third-Year packet is submitted to IFAS Human Resources in the summer of the third academic year. The tenure/permanent status packet is submitted to IFAS Human Resources no later the following July 1. DATE OF HIRE YEAR TO YEAR TO YEAR T/PS SUBMIT SUBMIT GRANTED THIRD-YEAR T/PS PACKET (JULY

  13. High energy product permanent magnet having improved intrinsic coercivity and method of making same

    DOE Patents [OSTI]

    Ramesh, Ramamoorthy (Berkeley, CA); Thomas, Gareth (Berkeley, CA)

    1990-01-01

    A high energy rare earth-ferromagnetic metal permanent magnet is disclosed which is characterized by improved intrinsic coercivity and is made by forming a particulate mixture of a permanent magnet alloy comprising one or more rare earth elements and one or more ferromagnetic metals and forming a second particulate mixture of a sintering alloy consisting essentially of 92-98 wt. % of one or more rare earth elements selected from the class consisting of Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and mixtures of two or more of such rare earth elements, and 2-8 wt. % of one or more alloying metals selected from the class consisting of Al, Nb, Zr, V, Ta, Mo, and mixtures of two or more of such metals. The permanent magnet alloy particles and sintering aid alloy are mixed together and magnetically oriented by immersing the mixture in an axially aligned magnetic field while cold pressing the mixture. The compressed mixture is then sintered at a temperature above the melting point of the sintering aid and below the melting point of the permanent magnet alloy to thereby coat the particle surfaces of the permanent magnetic alloy particles with the sintering aid while inhibiting migration of the rare earth element in the sintering aid into the permanent magnet alloy particles to thereby raise the intrinsic coercivity of the permanent magnet alloy without substantially lowering the high energy of the permanent magnet alloy.

  14. Aalborg Universitet Flicker Mitigation by Speed Control of Permanent Magnet Synchronous Generator

    E-Print Network [OSTI]

    Hu, Weihao

    Aalborg Universitet Flicker Mitigation by Speed Control of Permanent Magnet Synchronous Generator Synchronous Generator Variable-Speed Wind Turbines. Energies, 6(8), 3807-3821. 10.3390/en6083807 General.mdpi.com/journal/energies Article Flicker Mitigation by Speed Control of Permanent Magnet Synchronous Generator Variable-Speed Wind

  15. Creating Permanent Test Collections of Web Pages for Information Extraction Research*

    E-Print Network [OSTI]

    Gatterbauer, Wolfgang

    Creating Permanent Test Collections of Web Pages for Information Extraction Research* Bernhard information extraction, there is a need for permanent and annotated web page collections enabling objective sharable web page collections is not trivial nowadays because of the dynamic and diverse nature of modern

  16. Magnetic Patterning of Permanent-Magnet Rotors for Microscale Motor/Generators

    E-Print Network [OSTI]

    Magnetic Patterning of Permanent-Magnet Rotors for Microscale Motor/Generators I. Zana* , F, USA Abstract We present and characterize a process to pattern magnetic poles on small permanent-magnet, this approach uses a ferromagnetic magnetizing head (MH) and an externally applied magnetic field, and it offers

  17. Permanent shadow in simple craters near the lunar poles D. Ben J. Bussey,1

    E-Print Network [OSTI]

    Spudis, Paul D.

    Permanent shadow in simple craters near the lunar poles D. Ben J. Bussey,1 Paul G. Lucey,1 Donovan, 7500 km2 and 6500 km2 , for the north and south pole respectively. These values were obtained, to investigate the size and latitudinal extent of permanently shadowed regions near the lunar poles. Craters

  18. Method and system for controlling a permanent magnet machine

    DOE Patents [OSTI]

    Walters, James E.

    2003-05-20

    Method and system for controlling the start of a permanent magnet machine are provided. The method allows to assign a parameter value indicative of an estimated initial rotor position of the machine. The method further allows to energize the machine with a level of current being sufficiently high to start rotor motion in a desired direction in the event the initial rotor position estimate is sufficiently close to the actual rotor position of the machine. A sensing action allows to sense whether any incremental changes in rotor position occur in response to the energizing action. In the event no changes in rotor position are sensed, the method allows to incrementally adjust the estimated rotor position by a first set of angular values until changes in rotor position are sensed. In the event changes in rotor position are sensed, the method allows to provide a rotor alignment signal as rotor motion continues. The alignment signal allows to align the estimated rotor position relative to the actual rotor position. This alignment action allows for operating the machine over a wide speed range.

  19. Highly Charged Ions in Rare Earth Permanent Magnet Penning Traps

    E-Print Network [OSTI]

    Guise, Nicholas D; Tan, Joseph N

    2013-01-01

    A newly constructed apparatus at the National Institute of Standards and Technology (NIST) is designed for the isolation, manipulation, and study of highly charged ions. Highly charged ions are produced in the NIST electron-beam ion trap (EBIT), extracted through a beamline that selects a single mass/charge species, then captured in a compact Penning trap. The magnetic field of the trap is generated by cylindrical NdFeB permanent magnets integrated into its electrodes. In a room-temperature prototype trap with a single NdFeB magnet, species including Ne10+ and N7+ were confined with storage times of order 1 second, showing the potential of this setup for manipulation and spectroscopy of highly charged ions in a controlled environment. Ion capture has since been demonstrated with similar storage times in a more-elaborate Penning trap that integrates two coaxial NdFeB magnets for improved B-field homogeneity. Ongoing experiments utilize a second-generation apparatus that incorporates this two-magnet Penning tra...

  20. A "permanent" high-temperature superconducting magnet operated in thermal communication with a mass of solid nitrogen

    E-Print Network [OSTI]

    Haid, Benjamin J. (Benjamin John Jerome), 1974-

    2001-01-01

    This thesis explores a new design for a portable "permanent" superconducting magnet system. The design is an alternative to permanent low-temperature superconducting (LTS) magnet systems where the magnet is cooled by a ...

  1. Proceedings of the 88th Annual Meeting (held June 18-23 in San Antonio, TX), Air and Waste Management Association, Pittsburgh, Pennsylvania, June 1995 Paper No. 95-7.02 1995 H.C. Frey

    E-Print Network [OSTI]

    Frey, H. Christopher

    and Waste Management Association June 18-23, San Antonio, TX In: Proceedings of the 88th Annual Meeting Air and Waste Management Association Pittsburgh, Pennsylvania #12;Proceedings of the 88th Annual Meeting (held June 18-23 in San Antonio, TX), Air and Waste Management Association, Pittsburgh, Pennsylvania, June

  2. Dynamic Jiles-Atherton Model for Determining the Magnetic Power Loss at High Frequency in Permanent Magnet Machines

    E-Print Network [OSTI]

    Du, Ruoyang; Robertson, Paul

    2014-12-18

    —Finite element methods (FEM), Magnetic hysteresis, Magnetic losses, Magnetization, Permanent magnet machines, Permanent magnet motors, Permanent magnet generators. I. INTRODUCTION HE magnetic power losses in ferromagnetic materials have been continuously... made to the original dynamic Jiles-Atherton model in order to make it work correctly for laminations in high frequency permanent magnet synchronous machines (PMSMs), such as BLDC motors. Since the working frequencies of modern BLDC motors...

  3. Wave breaking onset of two-dimensional deep-water wave groups in the presence and absence of wind

    E-Print Network [OSTI]

    Saket, Arvin; Banner, Michael L; Barthelemy, Xavier; Allis, Michael J

    2015-01-01

    The criterion for the initiation of breaking demonstrated numerically by Barthelemy et al. (2015) has been investigated in the laboratory for unidirectional wave groups in deep-water and extended to include conditions of moderate wind forcing. Thermal Image Velocimetry was used to compare measurements of the crest surface water particle velocity (Us) with the wave crest velocity (C), as determined by an array of closely-spaced wave gauges. The energy flux ratio Bx = Us/C that distinguishes maximum recurrence from marginal breaking was found to be 0.840 $\\pm$ 0.016 in good agreement with the numerically determined value of 0.855. Further, the threshold was found to be robust for different classes of wave groups of distinct characteristic steepness at the breaking threshold. Increasing wind forcing from zero to U{\\lambda}/4/C0=1.42 increased this threshold by 2%. Increasing the spectral bandwidth (decreasing the Benjamin-Feir index from 0.39 to 0.31) systematically reduced the threshold by 1.5%.

  4. Mechanical alignment of particles for use in fabricating superconducting and permanent magnetic materials

    DOE Patents [OSTI]

    Nellis, William J. (Berkeley, CA); Maple, M. Brian (Del Mar, CA)

    1992-01-01

    A method for mechanically aligning oriented superconducting or permanently magnetic materials for further processing into constructs. This pretreatment optimizes the final crystallographic orientation and, thus, properties in these constructs. Such materials as superconducting fibers, needles and platelets are utilized.

  5. 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.

  6. Fabrication and Performance of Silicon-Embedded Permanent-Magnet Microgenerators

    E-Print Network [OSTI]

    Herrault, Florian

    This paper focuses on the design, fabrication, and characterization of silicon-packaged permanent-magnet (PM) microgenerators. The use of silicon packaging favors fine control on shape and dimensions in batch fabrication ...

  7. Prospects for Non-Rare Earth Permanent Magnets for Traction Motors and Generators

    SciTech Connect (OSTI)

    Kramer, Matthew; McCallum, Kendall; Anderson, Iver; Constantinides, Steven

    2012-06-29

    With the advent of high-flux density permanent magnets based on rare earth elements such as neodymium (Nd) in the 1980s, permanent magnet-based electric machines had a clear performance and cost advantage over induction machines when weight and size were factors such as in hybrid electric vehicles and wind turbines. However, the advantages of the permanent magnet-based electric machines may be overshadowed by supply constraints and high prices of their key constituents, rare earth elements, which have seen nearly a 10-fold increase in price in the last 5 years and the imposition of export limits by the major producing country, China, since 2010. We outline the challenges, prospects, and pitfalls for several potential alloys that could replace Nd-based permanent magnets with more abundant and less strategically important elements.

  8. Experimental verification for the design of a doubly-fed permanent magnetic generator

    E-Print Network [OSTI]

    Lu, Bin, Ph. D. Massachusetts Institute of Technology

    2007-01-01

    This is a continuous work on the project of a doubly-fed permanent magnet (DFPM) generator for wind turbines. The construction of a prototype machine was finally finished and experiments were conducted to verify the design ...

  9. Design and analysis of a permanent magnet generator for naval applications

    E-Print Network [OSTI]

    Rucker, Jonathan E. (Jonathan Estill)

    2005-01-01

    This paper discusses the electrical and magnetic design and analysis of a permanent magnet generation module for naval applications. Numerous design issues are addressed and several issues are raised about the potential ...

  10. ACTIVE SUSPENSION CONTROL WITH DIRECT-DRIVE TUBULAR LINEAR BRUSHLESS PERMANENT-MAGNET MOTOR 

    E-Print Network [OSTI]

    Lee, Seungho

    2010-01-16

    Recently, active suspension has been applied to many commercial automobiles. To develop the control algorithm for active suspension, a quarter-car test bed was built by using a direct-drive tubular linear brushless permanent-magnet motor (LBPMM...

  11. Evaluation of the filler effects on fatique cracking and permanent deformation of asphalt concrete mixtures 

    E-Print Network [OSTI]

    Izzo, Richard P

    1997-01-01

    The addition of hydrated lime to asphalt has shown to be beneficial with an improvement in the Theological properties of the binder, as well as resistance to permanent deformation (rutting) and fatigue cracking of asphalt concrete mixtures...

  12. Structural optimisation of permanent magnet direct drive generators for 5MW wind turbines 

    E-Print Network [OSTI]

    Zavvos, Aristeidis

    2013-11-28

    This thesis focuses on permanent magnet "direct drive" electrical generators for wind turbines with large power output. A variety of such generator topologies is reviewed, tested and optimised in an attempt to increase ...

  13. Factors affecting the permanence of livestock projects undertaken by Heifer International-Mexico 

    E-Print Network [OSTI]

    Arispe, Sergio Adrian

    2003-01-01

    in the state of Durango, Mexico. This study identified and analyzed the factors affecting the permanence of hog and dairy cow projects in four communities in the state of Durango, Mexico. The researcher interviewed seven project managers and 35 beneficiaries...

  14. Published in Proceedings of Digital Libraries 95, Austin, TX, June, 1995, pp. 39-48. Collection Maintenance in the Digital Library

    E-Print Network [OSTI]

    Ackerman, Mark S.

    Published in Proceedings of Digital Libraries Ô95, Austin, TX, June, 1995, pp. 39-48. Collection Maintenance in the Digital Library Mark S. Ackerman Roy T. Fielding Information and Computer Science Maintenance will be critical to digital libraries, especially those that promote broad access to diverse

  15. 1998 * Tsou, M. and Buttenfield, B.P. Client/Server Components and Metadata Objects for Distributed Geographic Information Services. Proceedings, GIS/LIS '98, Fort Worth, TX,

    E-Print Network [OSTI]

    Tsou, Ming-Hsiang

    Geographic Information Services. Proceedings, GIS/LIS '98, Fort Worth, TX, November, 1998: 590-599. CLIENT management of geographic information is pushing the GIS community to establish an open GIS architecture/server components underlie specification of task-oriented programming, and the modularization of GIS software

  16. THE OUTER EDGE OF THE KUIPER BELT. J. M. Hahn, Lunar and Planetary Institute, Houston TX 77058, USA, (hahn@lpi.usra.edu).

    E-Print Network [OSTI]

    Hahn, Joseph M.

    THE OUTER EDGE OF THE KUIPER BELT. J. M. Hahn, Lunar and Planetary Institute, Houston TX 77058, USA, (hahn@lpi.usra.edu). One of the more curious features of the Kuiper Belt is the apparent dearth of Kuiper Belt Objects (KBOs) orbiting the Sun beyond 50 AU with modest eccentricities and incli- nations, e

  17. November 15, 2006 IMACS 2006, College Station, TX 2006 -p. 1/18 A third order scheme for Hamilton-Jacobi

    E-Print Network [OSTI]

    Popov, Peter

    November 15, 2006 IMACS 2006, College Station, TX 2006 - p. 1/18 A third order scheme for Hamilton-Jacobi/18 Presentation outline s Brief overview of numerical methods for Hamilton-Jacobi equations s A conforming, piecewise quadratic scheme on triangular meshes, with local evolution for Hamilton-Jacobi equations

  18. ION GNSS 2006, Fort Worth TX, 26-29 September 2006 1/14 Integrated GPS/INS System for Pedestrian Navigation in a

    E-Print Network [OSTI]

    Calgary, University of

    ION GNSS 2006, Fort Worth TX, 26-29 September 2006 1/14 Integrated GPS/INS System for Pedestrian research is focused on integrated IMU/GPS navigation systems for pedestrian and vehicular navigation. Dr evaluates the performance of a shoe/foot mounted inertial system for pedestrian navigation application. Two

  19. PROJECT NAME: MEMPHIS AVE. DAM (EPWU Dam #4-TX07017) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: MEMPHIS AVE. DAM (EPWU Dam #4-TX07017) 1. Provide the name of all non. The purpose for the feasibility study is to determine the need to update/upgrade the dam in order to assist (NFIP), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location

  20. PROJECT NAME: SCENIC DRIVE DAM (EPWUDam #6-TX07019) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: SCENIC DRIVE DAM (EPWUDam #6-TX07019) 1. Provide the name of all non. The purpose for the feasibility study is to determine the need to update/upgrade the dam in order to assist (NFIP), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location

  1. PROJECT NAME: SAN DIEGO DAM (TX.07314) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: SAN DIEGO DAM (TX.07314) 1. Provide the name of all non-Federal interests planning for the feasibility study is to detennine the need to update/upgrade the dam in order to assist in our effmis), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location and affected

  2. PROJECT NAME: MOREHEAD AVE. DAM (EPWU Dam #2-TX07015) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: MOREHEAD AVE. DAM (EPWU Dam #2- TX07015) 1. Provide the name of all non. The purpose for the feasibility study is to determine the need to update/upgrade the dam in order to assist (NFIP), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location

  3. PROJECT NAME: CLIFF ST. DAM (EPWU Dam #10-TX07023) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: CLIFF ST. DAM (EPWU Dam #10- TX07023) 1. Provide the name of all non. The purpose for the feasibility study is to determine the need to update/upgrade the dam in order to assist (NFIP), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location

  4. PROJECT NAME: TREMONT AVE. DAM (EPWUDam #7-TX07020) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: TREMONT AVE. DAM (EPWUDam #7- TX07020) 1. Provide the name of all non. The purpose for the feasibility study is to determine the need to update/upgrade the dam in order to assist (NFIP), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location

  5. PROJECT NAME: MURCHISON AVE. DAM (EPWUDam #8--TX07021) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: MURCHISON AVE. DAM (EPWUDam #8--TX07021) 1. Provide the name of all non. The purpose for the feasibility study is to determine the need to update/upgrade the dam in order to assist (NFIP), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location

  6. PROJECT NAME: OHIO ST. RESERVOIR DAM (TX.09511) 1. Provide the name of all non-Federal interests planning to act as the sponsor, including

    E-Print Network [OSTI]

    US Army Corps of Engineers

    PROJECT NAME: OHIO ST. RESERVOIR DAM (TX.09511) 1. Provide the name of all non-Federal interests for the feasibility study is to determine the need to update/upgrade the dam in order to assist in our efforts), which allows for flood insurance discounts to local residents. #12;Image 1: Dam location and affected

  7. THE SECULAR EVOLUTION OF THE PRIMORDIAL KUIPER BELT. J. M. Hahn, Lunar and Planetary Institute, Houston TX 77058, USA, (hahn@lpi.usra.edu).

    E-Print Network [OSTI]

    Hahn, Joseph M.

    THE SECULAR EVOLUTION OF THE PRIMORDIAL KUIPER BELT. J. M. Hahn, Lunar and Planetary Institute, Houston TX 77058, USA, (hahn@lpi.usra.edu). The Kuiper Belt is a vast swarm of comets orbiting at the Solar System's outer edge. This Belt is comprised of debris that was left over from the epoch of planet

  8. Alternating magnetic anisotropy of Li2(Li1–xTx)N(T=Mn,Fe,Co,andNi)

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

    Jesche, A.; Ke, L.; Jacobs, J. L.; Harmon, B.; Houk, R. S.; Canfield, P. C.

    2015-05-11

    Substantial amounts of the transition metals Mn, Fe, Co, and Ni can be substituted for Li in single crystalline Li2(Li1–xTx)N. Isothermal and temperature-dependent magnetization measurements reveal local magnetic moments with magnitudes significantly exceeding the spin-only value. The additional contributions stem from unquenched orbital moments that lead to rare-earth-like behavior of the magnetic properties. Accordingly, extremely large magnetic anisotropies have been found. Most notably, the magnetic anisotropy alternates as easy plane?easy axis?easy plane?easy axis when progressing from T = Mn ? Fe ? Co ? Ni. This behavior can be understood based on a perturbation approach in an analytical, single-ion model.more »As a result, the calculated magnetic anisotropies show surprisingly good agreement with the experiment and capture the basic features observed for the different transition metals.« less

  9. Cost-Effective Energy Efficiency Measures for 15% Above 2009 IECC Code-Compliant House for Residential Buildings in TX 

    E-Print Network [OSTI]

    Kim, H.; Baltazar, J.C.; Haberl, J.; Lewis, C.; Yazdani, B.

    2011-01-01

    ?Compliant House in TX 11th ICEBO Conference Oct. 18 ? 20, 2011 11 17 Energy Efficiency Measures (3/4) DHW System Measures 11.Tankless gas water heater 12.Removal of pilot light from DHW system 13.Solar DHW system ? 32 sq. ft. collector, 65 gal tank 14....5% 2.9% 3.0% 2.2% 2.9% 2.3% 4.0% 3.3% 2.2% ? 4.0% 4.3% 11 Tankless Gas Water Heater (from .594 to .748 Energy Factor) 1.6% 1.7% 1.7% 1.6% 1.7% 1.7% 1.6% 1.7% 1.6% 1.6% ? 1.7% 1.6% 1.7% 1.7% 1.6% 1.7% 1.6% 1.5% 1.5% ? 1.7% 1.5% 12 Removal of Pilot...

  10. The application of seismic stratigraphic methods on exploration 3D seismic data to define a reservoir model in OPL 210, Deepwater Nigeria

    SciTech Connect (OSTI)

    Ragnhild, L.; Ventris, P. [Statoil and BP Alliance, Stavanger (Norway); Osahon, G. [Allied Energy Resources (Nig) Ltd., Lagos (Nigeria)

    1995-08-01

    OPL 210 lies in deepwater on the northwestern flank of the Niger Delta. The partners in this block are Allied Energy and The Statoil and BP Alliance. The license has a 5 year initial exploration phase and carries a 2 well commitment. At present the database comprises a 1 x 1 km grid of 2D seismic across the block, and 450 sq. km of 3D in an area of special interest. A larger 3D survey is planned for 1995. Little is known about the reservoir in the deep water, but we expect our main target to be ponded slope and basin turbidites. As such the bulk of the shelf well data available has little or no relevance to the play type likely to be encountered. Prior to drilling, seismic stratigraphy has been one of several methods used to generate a consistent predictive reservoir model. The excellent quality and high resolution of the 3D data have allowed identification and detailed description of several distinctive seismic facies. These facies are described in terms of their internal geometries and stacking patterns. The geometries are then interpreted based on a knowledge of depositional processes from analog slope settings. This enables a predictive model to be constructed for the distribution of reservoir within the observed facies. These predictions will be tested by one of the first wells drilled in the Nigerian deepwater in mid 1995.

  11. University of Houston -Office of Scholarships and Financial Aid 5000 Gulf Freeway, ERP 2 Room 224, Houston, TX 77204-2010 Phone: (713)743-1010 Fax: (713)743-9098

    E-Print Network [OSTI]

    Azevedo, Ricardo

    TCHAPP University of Houston - Office of Scholarships and Financial Aid 5000 Gulf Freeway, ERP 2 of Scholarships and Financial Aid 5000 Gulf Freeway, ERP 2 Room 224, Houston, TX 77204-2010 Phone: (713

  12. Top DIUS official moves to the Football Association Ian Watmore, permanent secretary at the Department for Innovation, Universities and Skills,

    E-Print Network [OSTI]

    Crowther, Paul

    Top DIUS official moves to the Football Association Ian Watmore, permanent secretary Football Association. At the FA, Watmore will be reunited with David Triesman, the FA's chairman, who

  13. Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine

    DOE Patents [OSTI]

    Qu, Ronghai; Lipo, Thomas A.

    2005-08-02

    The present invention provides a novel dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine. The present invention improves electrical machine torque density and efficiency. At least one concentric surface-mounted permanent magnet dual-rotor is located inside and outside of a torus-shaped stator with back-to-back windings, respectively. The machine substantially improves machine efficiency by reducing the end windings and boosts the torque density by at least doubling the air gap and optimizing the machine aspect ratio.

  14. [12.7.20044:01pm] [101114] [Page No. 101] {Eserial}4393-van-Pelt/3d/vanPelt-tx08.3d Van Pelt

    E-Print Network [OSTI]

    Stryker, Michael

    . Prog Brain Res.147:103-114. Corrections indicated in red. #12;[12.7.2004­4:01pm] [101­114] [Page No[12.7.2004­4:01pm] [101­114] [Page No. 101] {Eserial}4393-van-Pelt/3d/vanPelt-tx08.3d Van Pelt U N Research, Vol. 147 ISSN 0079-6123 Copyright ß 2005 Elsevier BV. All rights reserved CHAPTER 8 Molecular

  15. D e e p w a t e r H o r i z o n O i l S p i l l N a t u r a l R e s o u r c e D a m a g e A s s e s s m e n t Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    ) was using Transocean's mobile offshore drilling unit Deepwater Horizon to drill a well in the Macondo prospect (Mississippi Canyon 252 ­ MC252) when the well blew out, and the drilling unit exploded, caught

  16. Method and apparatus for sensorless operation of brushless permanent magnet motors

    DOE Patents [OSTI]

    Sriram, T.V.

    1998-04-14

    A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle. 23 figs.

  17. Method and apparatus for sensorless operation of brushless permanent magnet motors

    DOE Patents [OSTI]

    Sriram, Tillasthanam V. (Carmel, IN)

    1998-01-01

    A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle.

  18. High speed internal permanent magnet machine and method of manufacturing the same

    DOE Patents [OSTI]

    Alexander, James Pellegrino (Ballston Lake, NY); EL-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Lokhandwalla, Murtuza (Clifton Park, NY); Shah, Manoj Ramprasad (Latham, NY); VanDam, Jeremy Daniel (West Coxsackie, NY)

    2011-09-13

    An internal permanent magnet (IPM) machine is provided. The IPM machine includes a stator assembly and a stator core. The stator core also includes multiple stator teeth. The stator assembly is further configured with stator windings to generate a magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity. The IPM machine also includes a rotor assembly and a rotor core. The rotor core is disposed inside the cavity and configured to rotate about the longitudinal axis. The rotor assembly further includes a shaft. The shaft further includes multiple protrusions alternately arranged relative to multiple bottom structures provided on the shaft. The rotor assembly also includes multiple stacks of laminations disposed on the protrusions and dovetailed circumferentially around the shaft. The rotor assembly further includes multiple permanent magnets for generating a magnetic field, which interacts with the stator magnetic field to produce torque. The permanent magnets are disposed between the stacks. The rotor assembly also includes multiple bottom wedges disposed on the bottom structures of the shaft and configured to hold the multiple stacks and the multiple permanent magnets.

  19. Dynamic Motor Parameter Identification for High Speed Flux Weakening Operation of Brushless Permanent Magnet Synchronous Machines

    E-Print Network [OSTI]

    Szabados, Barna

    Permanent Magnet Synchronous Machines Abstract: An experimental investigation is conducted to determine the behaviour of brushless PM synchronous machine parameters in the high speed flux weakening operating range synchronous machines. Special computer assisted measuring techniques are employed using an experimental vector

  20. Control Realization for an Interior Permanent Magnet Synchronous Motor (IPMSM) in Automotive Drive Trains

    E-Print Network [OSTI]

    Noé, Reinhold

    Control Realization for an Interior Permanent Magnet Synchronous Motor (IPMSM) in Automotive Drive, the Maximal Torque Per Current (MTPC) method provides appropriate results. The requested torque is generated higher drive efficiency. The requested torque is generated with a minimum of total losses, which

  1. Discharge Oscillations in a Permanent Magnet Cylindrical Hall-Effect Thruster

    E-Print Network [OSTI]

    circuit leaves very little room for magnetic pole pieces and heat shields. Propulsion Research EngineerDischarge Oscillations in a Permanent Magnet Cylindrical Hall-Effect Thruster IEPC-2009 and complexity as the voltage is increased, and are reduced in severity with increasing flow rate. The `breathing

  2. KINEMATIC FAST DYNAMO PROBLEMS Stars and planets possess magnetic elds that permanently change. Earth, for

    E-Print Network [OSTI]

    Khesin, Boris A.

    CHAPTER V KINEMATIC FAST DYNAMO PROBLEMS Stars and planets possess magnetic elds that permanently that the time pattern of the switches forms a Cantor-type set on the time scale (see AnS]). The mechanism the subject of dynamo theory. Kinematic dynamo theory studies what kind of uid motion can induce exponential

  3. AN ISSUE OF PERMANENCE: ASSESSING THE EFFECTIVENESS OF TEMPORARY CARBON STORAGE

    E-Print Network [OSTI]

    AN ISSUE OF PERMANENCE: ASSESSING THE EFFECTIVENESS OF TEMPORARY CARBON STORAGE HOWARD HERZOG1, KEN of temporary storage?' Valuing temporary storage can be represented as a familiar economic problem a fixed cumulative emissions limit and there is no backstop, then a storage option with even very slow

  4. Optimal drug release schedule for in-situ radiosensitization of image guided permanent prostate implants

    E-Print Network [OSTI]

    Sridhar, Srinivas

    of image guided 125 I prostate brachytherapy. Spacers used in permanent implants may be manufactured from such a constraint, is not known. This work determines the optimal elution schedules for 125 I prostate brachytherapy. The interaction between brachytherapy dose distributions and drug distribution around drug eluting spacers

  5. Permanent Magnet Motors for Energy Savings in Industrial Applications Copyright Material IEEE

    E-Print Network [OSTI]

    McCalley, James D.

    Permanent Magnet Motors for Energy Savings in Industrial Applications Copyright Material IEEE Paper industry. Over the past 30 years, there have been clear trends in motor utilization that demand higher energy efficiency and reduced Total Cost of Ownership (TCO). Induction motors have been able

  6. MONITORING TIANJIN SUBSIDENCE WITH THE PERMANENT SCATTERERS Dr. Daniele Perissin(1)

    E-Print Network [OSTI]

    Perissin, Daniele

    MONITORING TIANJIN SUBSIDENCE WITH THE PERMANENT SCATTERERS TECHNIQUE Dr. Daniele Perissin(1) , Dr 34/5, 20133 Milano, Italy 1. ABSTRACT Many urban areas in China are affected by land subsidence the area around Tianjin city in the Popular Republic of China, where a subsidence at the present time

  7. Fluorescence Microscopy Evidence for Quasi-Permanent Attachment of Antifreeze Proteins to Ice Surfaces

    E-Print Network [OSTI]

    Wettlaufer, John S.

    Fluorescence Microscopy Evidence for Quasi-Permanent Attachment of Antifreeze Proteins to Ice ABSTRACT Many organisms are protected from freezing by the presence of extracellular antifreeze proteins (AFPs), which bind to ice, modify its morphology, and prevent its further growth. These proteins have

  8. A Fault-Tolerant Multiphase Permanent Magnet Generator for Marine Current Turbine Applications

    E-Print Network [OSTI]

    Boyer, Edmond

    A Fault-Tolerant Multiphase Permanent Magnet Generator for Marine Current Turbine Applications on offshore wind turbine systems. Marine current turbines are characterized by a very difficult access feature. This paper deals with the use of a PM multiphase marine current turbine generator. With this kind

  9. The WIPP is the nation's first geologic facility designed for permanent disposal of transuranic

    E-Print Network [OSTI]

    The WIPP is the nation's first geologic facility designed for permanent disposal of transuranic, New Mexico to dispose of this waste. The TRU waste being disposed at the WIPP is packaged into drums-level waste and spent nuclear fuel. The WIPP has a total capacity of 6.2 million cubic feet of TRU waste

  10. A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator

    E-Print Network [OSTI]

    A Permanent-Magnet Microwave Ion Source for a Compact High-Yield Neutron Generator O. Waldmanna-yield compact neutron generator for active interrogation applications. The sealed tube generator will be capable with an optimized magnetic field. Keywords: Neutron generator, Microwave ion source, Active interroga- tion PACS: 29

  11. Permanent Closure of MFC Biodiesel Underground Storage Tank 99ANL00013

    SciTech Connect (OSTI)

    Kerry L. Nisson

    2012-10-01

    This closure package documents the site assessment and permanent closure of the Materials and Fuels Complex biodiesel underground storage tank 99ANL00013 in accordance with the regulatory requirements established in 40 CFR 280.71, “Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks: Out-of-Service UST Systems and Closure.”

  12. A nanotubular metal-organic framework with permanent porosity : structure analysis and gas sorption studies.

    SciTech Connect (OSTI)

    Ma, S.; Simmons, J. M.; Li, J. R.; Yuan, D.; Weng, W.; Liu, D. J.; Zhou, H. C.; Chemical Sciences and Engineering Division; Texas A&M Univ.; NIST

    2009-01-01

    A nanotubular metal-organic framework, PCN-19, was constructed based on a micro3-oxo-trinickel basic carboxylate secondary building unit (SBU) and the 9,10-anthracenedicarboxylate ligand; its permanent porosity was confirmed by N2 adsorption isotherms, and its H2 storage performances were evaluated under both low and high pressures at 77 K.

  13. Wireless Control of Magnetic Helical Microrobots using a Rotating-Permanent-Magnet Manipulator

    E-Print Network [OSTI]

    Bamberg, Stacy Morris

    ]. Helical propulsion using magnetic fields is particularly promising for medical microrobots. HelicalWireless Control of Magnetic Helical Microrobots using a Rotating-Permanent-Magnet Manipulator Thomas W. R. Fountain, Prem V. Kailat, and Jake J. Abbott Abstract-- Magnetic helical medical microrobots

  14. Permanent Field Plot Methodology and Equipment1 Thomas G. Cole2

    E-Print Network [OSTI]

    of what changes occur over time in indigenous agroforestry systems. Permanent plot methodology can be used to conduct several different types of surveys. Two that are appropriate to the Pacific are island-wide and case studies. An island-wide survey is ideal for obtaining baseline information concerning agroforest

  15. Examples of the Generalized Quantum Permanent Compromise Attack to the Blum-Micali Construction

    E-Print Network [OSTI]

    Guedes, Elloá B; Lula, Bernardo

    2010-01-01

    This paper presents examples of the quantum permanent compromise attack to the Blum-Micali construction. Such attacks illustrate how a previous attack to the Blum-Micali generator can be extended to the whole Blum-Micali construction, including the Blum-Blum-Shub and Kaliski generators.

  16. Phoenix: Detecting and Recovering from Permanent Processor Design Bugs with Programmable Hardware

    E-Print Network [OSTI]

    Torrellas, Josep

    Phoenix: Detecting and Recovering from Permanent Processor Design Bugs with Programmable Hardware, and Motorola processors, this paper proposes and evalu- ates Phoenix -- novel field-programmable on-chip hardware that de- tects and recovers from design defects. Phoenix taps key logic signals and, based

  17. Microsymposium 34, MS065, 2001 PERMANENTLY SHADOWED AREAS AT THE LUNAR POLES. V. V. Shevchenko1

    E-Print Network [OSTI]

    Shevchenko, Vladislav

    Microsymposium 34, MS065, 2001 PERMANENTLY SHADOWED AREAS AT THE LUNAR POLES. V. V. Shevchenko1 , E a maximum of 1,95° above the horizon at the lunar poles. Therefore topographic depressions near the lunar poles may contain water ice deposits. We have used the Morphological catalogue of the craters

  18. Analysis of Slanted Air-gap Structure of Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation

    E-Print Network [OSTI]

    Tolbert, Leon M.

    machine, synchronous motors, torque. I. NOMENCLATURE BFE brushless field excitation IPMSM interiorAnalysis of Slanted Air-gap Structure of Interior Permanent Magnet Synchronous Motor with Brushless permanent magnet synchronous motor (IPMSM) for application in a hybrid electric vehicle. This unique slanted

  19. Power-Factor and Torque Calculation with Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with

    E-Print Network [OSTI]

    Tolbert, Leon M.

    OF IPMSM Below is the well-known electromagnetic torque equation for all synchronous machines: dqqd iip Permanent Magnet Synchronous Motor with Brushless Field Excitation Seong Taek Lee1,2 , Timothy A. Burress1 permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include

  20. Study of Various Slanted Air-gap Structures of Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation

    E-Print Network [OSTI]

    Tolbert, Leon M.

    magnet machine, synchronous motors, torque. I. NOMENCLATURE BFE brushless field excitation IPMSM interiorStudy of Various Slanted Air-gap Structures of Interior Permanent Magnet Synchronous Motor of the slanted air-gap structure of an interior permanent magnet synchronous motor with brushless field

  1. Abstract --For high-speed machines applications, eddy-current losses in the interior permanent magnet of synchronous

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Abstract -- For high-speed machines applications, eddy- current losses in the interior permanent carries out a prediction of eddy current losses in PM where the skin effect is considered. A complete by analytical method. Index Terms-- High speed, Permanent magnet machines, Eddy-currents, power losses, skin

  2. ''Heat Transfer at the Mold-Metal Interface in Permanent Mold Casting of Aluminum Alloys'' Final Project Report

    SciTech Connect (OSTI)

    Professor R. D. Pehlke, Principal Investigator, Dr. John M. Cookson, Dr. Shouwei Hao, Dr. Prasad Krishna, Kevin T. Bilkey

    2001-12-14

    This project on heat transfer coefficients in metal permanent mold casting has been conducted in three areas. They are the theoretical study at the University of Michigan, the experimental investigation of squeeze casting at CMI-Tech Center (Now Hayes-Lemmerz Technical Center) and the experimental investigation of low pressure permanent mold casting at Amcast Automotive.

  3. IEEE TRANSACTIONS ON ENERGY CONVERSION, VOL. 20, NO. 1, MARCH 2005 121 Minimization of Iron Losses of Permanent

    E-Print Network [OSTI]

    Mi, Chunting "Chris"

    magnet machines, synchronous machines. I. INTRODUCTION ELECTRIC motor-driven equipment utilizes of Permanent Magnet Synchronous Machines Chunting Chris Mi, Senior Member, IEEE, Gordon R. Slemon, Life Fellow, IEEE, and Richard Bonert, Member, IEEE Abstract--In permanent magnet (PM) synchronous machines, iron

  4. IEEE TRANSACTIONS ON MAGNETICS, VOL. 41, NO. 10, OCTOBER 2005 3823 Design of a Superhigh-Speed Cryogenic Permanent

    E-Print Network [OSTI]

    Wu, Thomas

    . In this paper, the design and simulation of a cryogenic PMSM with an output shaft power of 2000 W at 200 000 rpm magnet is centrally located inside the hollow shaft. The permanent magnet was inserted into the hollow shaft by heating the titanium shaft to 570 K and cooling the permanent magnet down to 77 K. B. Design

  5. Method for providing slip energy control in permanent magnet electrical machines

    DOE Patents [OSTI]

    Hsu, John S.

    2006-11-14

    An electric machine (40) has a stator (43), a permanent magnet rotor (38) with permanent magnets (39) and a magnetic coupling uncluttered rotor (46) for inducing a slip energy current in secondary coils (47). A dc flux can be produced in the uncluttered rotor when the secondary coils are fed with dc currents. The magnetic coupling uncluttered rotor (46) has magnetic brushes (A, B, C, D) which couple flux in through the rotor (46) to the secondary coils (47c, 47d) without inducing a current in the rotor (46) and without coupling a stator rotational energy component to the secondary coils (47c, 47d). The machine can be operated as a motor or a generator in multi-phase or single-phase embodiments and is applicable to the hybrid electric vehicle. A method of providing a slip energy controller is also disclosed.

  6. Analytical modeling of a new disc permanent magnet linear synchronous machine for electric vehicles

    SciTech Connect (OSTI)

    Liu, C.T.; Chen, J.W.; Su, K.S.

    1999-09-01

    This paper develops an analytical approach based on a qd0 reference frame model to analyze dynamic and steady state characteristics of disc permanent magnet linear synchronous machines (DPMLSMs). The established compact mathematical model can be more easily employed to analyze the system behavior and to design the controller. Superiority in operational electromagnetic characteristics of the proposed DPMLSM for electric vehicle (EV) applications is verified by both numerical simulations and experimental investigations.

  7. Optimal current control strategies for surface-mounted permanent-magnet synchronous machine drives

    SciTech Connect (OSTI)

    Chapman, P.L.; Sudhoff, S.D.; Whitcomb, C.A.

    1999-12-01

    The current waveforms for optimal excitation of surface-mounted permanent-magnet synchronous machines are set forth. Four different modes are considered, involving varying degrees of minimization of rms current and torque ripple. The optimized waveforms are markedly different than the traditional sinusoidal or rectangular excitation schemes. Inclusion of cogging torque and arbitrary degree of torque ripple minimization generalize this work over that of previous authors. An experimental drive and a detailed computer simulation verify the proposed control schemes.

  8. Minimizing Wheel Slip in Railway Locomotives with Coupled Permanent Magnet Synchronous Motors

    E-Print Network [OSTI]

    Shayak Bhattacharjee

    2015-01-17

    In this work I consider control strategies of permanent magnet synchronous motors in which the back-emf signal from the motor is used to achieve commutation of the six step driving circuit. I show that if the strategy is modified to connect multiple motors in a cyclic chain, then a collective synchronized state is favoured. The stability of this state can be exploited in the bogies of a railway locomotive to automatically terminate wheel slipping episodes.

  9. Energy Saving Melting and Revert Reduction Technology (Energy-SMARRT): Light Metals Permanent Mold Casting

    SciTech Connect (OSTI)

    Fasoyinu, Yemi

    2014-03-31

    Current vehicles use mostly ferrous components for structural applications. It is possible to reduce the weight of the vehicle by substituting these parts with those made from light metals such as aluminum and magnesium. Many alloys and manufacturing processes can be used to produce these light metal components and casting is known to be most economical. One of the high integrity casting processes is permanent mold casting which is the focus of this research report. Many aluminum alloy castings used in automotive applications are produced by the sand casting process. Also, aluminum-silicon (Al-Si) alloys are the most widely used alloy systems for automotive applications. It is possible that by using high strength aluminum alloys based on an aluminum-copper (Al-Cu) system and permanent mold casting, the performance of these components can be enhanced significantly. This will also help to further reduce the weight. However, many technological obstacles need to be overcome before using these alloys in automotive applications in an economical way. There is very limited information in the open literature on gravity and low-pressure permanent mold casting of high strength aluminum alloys. This report summarizes the results and issues encountered during the casting trials of high strength aluminum alloy 206.0 (Al-Cu alloy) and moderate strength alloy 535.0 (Al-Mg alloy). Five engineering components were cast by gravity tilt-pour or low pressure permanent mold casting processes at CanmetMATERIALS (CMAT) and two production foundries. The results of the casting trials show that high integrity engineering components can be produced successfully from both alloys if specific processing parameters are used. It was shown that a combination of melt processing and mold temperature is necessary for the elimination of hot tears in both alloys.

  10. EIS-0473: W.A. Parish Post-Combustion CO2 Capture and Sequestration Project (PCCS), Fort Bend County, TX

    Broader source: Energy.gov [DOE]

    This EIS evaluates the environmental impacts of a proposal to provide financial assistance for a project proposed by NRG Energy, Inc (NRG). DOE selected NRG’s proposed W.A. Parish Post-Combustion CO2 Capture and Sequestration Project for a financial assistance award through a competitive process under the Clean Coal Power Initiative Program. NRG would design, construct and operate a commercial-scale carbon dioxide (CO2) capture facility at its existing W.A. Parish Generating Station in Fort Bend County, Texas; deliver the CO2 via a new pipeline to the existing West Ranch oil field in Jackson County, Texas, for use in enhanced oil recovery operations; and demonstrate monitoring techniques to verify the permanence of geologic CO2 storage.

  11. 734 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 39, NO. 3, MAY/JUNE 2003 Modeling of Iron Losses of Permanent-Magnet

    E-Print Network [OSTI]

    Mi, Chunting "Chris"

    currents, hysteresis, iron losses, permanent magnets (PMs), permanent-magnet (PM) machines, synchronous Losses of Permanent-Magnet Synchronous Motors Chunting Mi, Member, IEEE, Gordon R. Slemon, Life Fellow and the reduction of stator loss from operation near unity power factor. In PM machines, iron losses form

  12. Electro-mechanical energy conversion system having a permanent magnet machine with stator, resonant transfer link and energy converter controls

    DOE Patents [OSTI]

    Skeist, S. Merrill; Baker, Richard H.

    2006-01-10

    An electro-mechanical energy conversion system coupled between an energy source and an energy load comprising an energy converter device including a permanent magnet induction machine coupled between the energy source and the energy load to convert the energy from the energy source and to transfer the converted energy to the energy load and an energy transfer multiplexer to control the flow of power or energy through the permanent magnetic induction machine.

  13. Characterization of Vadose Zone Sediments Below the TX Tank Farm: Boreholes C3830, C3831, C3832 and RCRA Borehole 299-W10-27

    SciTech Connect (OSTI)

    Serne, R. Jeffrey; Bjornstad, Bruce N.; Horton, Duane G.; Lanigan, David C.; Lindenmeier, Clark W.; Lindberg, Michael J.; Clayton, Ray E.; Legore, Virginia L.; Orr, Robert D.; Kutnyakov, Igor V.; Baum, Steven R.; Geiszler, Keith N.; Valenta, Michelle M.; Vickerman, Tanya S.

    2008-09-11

    This report was revised in September 2008 to remove acid-extractable sodium data from Tables 4.8, 4.28,4.43, and 4.59. The sodium data was removed due to potential contamination introduced during the acid extraction process. The rest of the text remains unchanged from the original report issued in April 2004. The overall goal of the Tank Farm Vadose Zone Project, led by CH2M HILL Hanford Group, Inc., is to define risks from past and future single-shell tank farm activities at Hanford. To meet this goal, CH2M HILL Hanford Group, Inc. tasked scientists from Pacific Northwest National Laboratory to perform detailed analyses on vadose zone sediments from within Waste Management Area (WMA) T-TX-TY. This report is the first of two reports written to present the results of these analyses. Specifically, this report contains all the geologic, geochemical, and selected physical characterization data collected on vadose zone sediment recovered from boreholes C3830, C3831, and C3832 in the TX Tank Farm, and from borehole 299-W-10-27 installed northeast of the TY Tank Farm.

  14. Training Session: Euless, TX

    Broader source: Energy.gov [DOE]

    This 3.5-hour training provides builders with a comprehensive review of zero energy-ready home construction including the business case, detailed specifications, and opportunities to be recognized...

  15. Houston, TX Trinity Uni

    E-Print Network [OSTI]

    Natelson, Douglas

    Baton Rou jnovak@PI Lin Luo The Dow C 2301 Brazo Freeport, T lluo2@dow NACS Rep Mike Reyn Shell Inter pecially if yo sh. e colleagues am to them ur Treasurer ould be mad nt registrati ip. : The best 00 t). WCS p (last #12;3 7 8 8 9 10 10 1 12 2 3 3 7:30 AM 8:25 AM 8:30 AM 9:15 AM 0:00 AM 0:30 AM 1

  16. D&TX

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co -VANaval ,, *' ;x-L*Qwner contacted0*.

  17. ~tx410.ptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thI D- 6 0 4 2 rz machine |NNSA0202(2).pdf More THURSDAY,

  18. ~tx421.ptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26thI D- 6 0 4 2 rz machine |NNSA0202(2).pdf More THURSDAY,

  19. Permanent Magnet Skew Quadrupoles for the Low Emittance LER Lattice of PEP-II

    SciTech Connect (OSTI)

    Decker, F.-J.; Anderson, S.; Kharakh, D.; Sullivan, M.; /SLAC

    2011-07-05

    The vertical emittance of the low energy ring (LER) in the PEP-II B-Factory was reduced by using skew quadrupoles consisting of permanent magnet material. The advantages over electric quadrupoles or rotating existing normal quadrupoles are discussed. To assure a high field quality, a Biot-Savart calculation was used to cancel the natural 12-pole component by using different size poles over a few layers. A magnetic measurement confirmed the high quality of the magnets. After installation and adjusting the original electric 12 skew and 16 normal quadrupoles the emittance contribution from the region close to the interaction point, which was the biggest part in the original design, was considerably reduced. To strengthen the vertical behavior of the LER beam, a low emittance lattice was developed. It lowered the original vertical design emittance from 0.54 nm-rad to 0.034 nm-rad. In order to achieve this, additional skew quadrupoles were required to bring the coupling correction out of the arcs and closer to the detector solenoid in the straight (Fig. 1). It is important, together with low vertical dispersion, that the low vertical emittance is not coupled into the horizontal, which is what we get if the coupling correction continues into the arcs. Further details of the lattice work is described in another paper; here we concentrate on the development of the permanent skew (PSK) quadrupole solution. Besides the permanent magnets there are two other possibilities, using electric magnets or rotating normal quadrupoles. Electric magnets would have required much more additional equipment like magnets stands, power supply, and new vacuum chamber sections. Rotating existing quadrupoles was also not feasible since they are mostly mounted together with a bending magnet on the same support girder.

  20. Method and system for controlling a permanent magnet machine during fault conditions

    DOE Patents [OSTI]

    Krefta, Ronald John; Walters, James E.; Gunawan, Fani S.

    2004-05-25

    Method and system for controlling a permanent magnet machine driven by an inverter is provided. The method allows for monitoring a signal indicative of a fault condition. The method further allows for generating during the fault condition a respective signal configured to maintain a field weakening current even though electrical power from an energy source is absent during said fault condition. The level of the maintained field-weakening current enables the machine to operate in a safe mode so that the inverter is protected from excess voltage.

  1. Modular axial-flux permanent-magnet motor for ship propulsion drives

    SciTech Connect (OSTI)

    Caricchi, F.; Crescimbini, F.; Honorati, O.

    1999-09-01

    Original features such as compactness and lightness make slotless axial-flux permanent-magnet machines (AFPMs) eligible for application in large power motor drives devoted to the direct drive of ship propellers. This paper discusses characteristics of AFPMs designed for application in marine propulsion, and machine performances such as efficiency, weight and torque density are evaluated for a comparison with those of conventional synchronous machines. A newly-conceived modular arrangement of the machine stator winding is proposed and experimental results taken from a small-size machine prototype are finally shown.

  2. Cerium-Based Magnets: Novel High Energy Permanent Magnet Without Critical Elements

    SciTech Connect (OSTI)

    2012-01-01

    REACT Project: Ames Laboratory will develop a new class of permanent magnets based on the more commonly available element cerium for use in both EVs and renewable power generators. Cerium is 4 times more abundant and significantly less expensive than the rare earth element neodymium, which is frequently used in today’s most powerful magnets. Ames Laboratory will combine other metal elements with cerium to create a new magnet that can remain stable at the high temperatures typically found in electric motors. This new magnetic material will ultimately be demonstrated in a prototype electric motor, representing a cost-effective and efficient alternative to neodymium-based motors.

  3. EA-1895: Lolo Creek Permanent Weir Construction near town of Weippe, Clearwater County, Idaho

    Broader source: Energy.gov [DOE]

    DOE’s Bonneville Power Administration was preparing this EA to evaluate the potential environmental impacts of replacing an existing seasonal fish weir with a permanent weir, which would have been used to monitor federally-listed Snake River steelhead and collect spring Chinook salmon adults to support ongoing supplementation programs in the watershed. The Bureau of Land Management, a cooperating agency, preliminarily determined Lolo Creek to be suitable for Congressional designation into the Wild and Scenic River System. The EA included a Wild and Scenic River Section 7 analysis. This project was canceled.

  4. Method and system for controlling start of a permanent magnet machine

    DOE Patents [OSTI]

    Walters, James E.; Krefta, Ronald John

    2003-10-28

    Method and system for controlling a permanent magnet machine are provided. The method provides a sensor assembly for sensing rotor sector position relative to a plurality of angular sectors. The method further provides a sensor for sensing angular increments in rotor position. The method allows starting the machine in a brushless direct current mode of operation using a calculated initial rotor position based on an initial angular sector position information from the sensor assembly. Upon determining a transition from the initial angular sector to the next angular sector, the method allows switching to a sinusoidal mode of operation using rotor position based on rotor position information from the incremental sensor.

  5. Use of Retrievable Compared to Permanent Inferior Vena Cava Filters: A Single-Institution Experience

    SciTech Connect (OSTI)

    Ha, Thuong G. Van [University of Chicago, Department of Radiology, Section of Vascular and Interventional Radiology (United States)], E-mail: tgvanha@uchicago.edu; Chien, Andy S. [Pritzker School of Medicine, University of Chicago (United States); Funaki, Brian S.; Lorenz, Jonathan [University of Chicago, Department of Radiology, Section of Vascular and Interventional Radiology (United States); Piano, Giancarlo [University of Chicago, Department of Surgery (United States); Shen, Maxine [Pritzker School of Medicine, University of Chicago (United States); Leef, Jeffrey [University of Chicago, Department of Radiology, Section of Vascular and Interventional Radiology (United States)

    2008-03-15

    The purpose of this study was to review the use, safety, and efficacy of retrievable inferior vena cava (IVC) filters in their first 5 years of availability at our institution. Comparison was made with permanent filters placed in the same period. A retrospective review of IVC filter implantations was performed from September, 1999, to September, 2004, in our department. These included both retrievable and permanent filters. The Recovery nitinol and Guenther tulip filters were used as retrievable filters. The frequency of retrievable filter used was calculated. Clinical data and technical data related to filter placement were reviewed. Outcomes, including pulmonary embolism, complications associated with placement, retrieval, or indwelling, were calculated. During the study period, 604 IVC filters were placed. Of these, 97 retrievable filters (16%) were placed in 96 patients. There were 53 Recovery filter and 44 Tulip filter insertions. Subjects were 59 women and 37 men; the mean age was 52 years, with a range of from 18 to 97 years. The placement of retrievable filters increased from 2% in year 1 to 32% in year 5 of the study period. The total implantation time for the permanent group was 145,450 days, with an average of 288 days (range, 33-1811 days). For the retrievable group, the total implantation time was 21,671 days, with an average of 226 days (range, 2-1217 days). Of 29 patients who returned for filter retrieval, the filter was successfully removed in 28. There were 14 of 14 successful Tulip filter retrievals and 14 of 15 successful Recovery filter retrievals. In one patient, after an indwelling period of 39 days, a Recovery nitinol filter could not be removed secondary to a large clot burden within the filter. For the filters that were removed, the mean dwell time was 50 days for the Tulip type and 20 days for the Recovery type. Over the follow-up period there was an overall PE incidence of 1.4% for the permanent group and 1% for the retrieval group. In conclusion, there was an increase in the use of retrievable filters over the study period and an overall increase in the total number of filters implanted. The increased use of these filters appeared to be due to expanded indications predicated by their retrievability. Placement and retrieval of these filters have a low risk of complications, and retrievable filters appeared effective, as there was low rate of clinically significant pulmonary embolism associated with these filters during their indwelling time.

  6. Container for reprocessing and permanent storage of spent nuclear fuel assemblies

    DOE Patents [OSTI]

    Forsberg, Charles W. (Oak Ridge, TN)

    1992-01-01

    A single canister process container for reprocessing and permanent storage of spent nuclear fuel assemblies comprising zirconium-based cladding and fuel, which process container comprises a collapsible container, having side walls that are made of a high temperature alloy and an array of collapsible support means wherein the container is capable of withstanding temperature necessary to oxidize the zirconium-based cladding and having sufficient ductility to maintain integrity when collapsed under pressure. The support means is also capable of maintaining their integrity at temperature necessary to oxide the zirconium-based cladding. The process container also has means to introduce and remove fluids to and from the container.

  7. Modeling the value recovery of rare earth permanent magnets at end-of-life

    SciTech Connect (OSTI)

    Cong, Liang; Jin, Hongyue; Fitsos, Pete; McIntyre, Timothy; Yih, Yuehwern; Zhao, Fu; Sutherland, John W.

    2015-01-01

    Permanent magnets containing rare earth elements (REEs) such as Dysprosium and Neodymium offer an advantage over non-REE containing magnets (e.g., ferrite and AlNiCo) in terms of power relative to size. However, REE availability has varied significantly in recent years leading to volatility in the cost of rare earth permanent magnets (REPMs). The supply of REEs can be increased by recycling consumer products and industrial machinery that contain REPMs at product end-of-life (EOL). This paper discusses the REE recovery process for EOL products. The optimal dismantling of products is examined with an emphasis placed on obtaining used REPMs. The challenge of collecting, managing, transporting, and processing used products is addressed through the development of a cost model for REPM recovery. This model is used to investigate several EOL strategies for recovering REPMs. Sensitivity analysis is conducted to identify the key factors that influence value recovery economics. A hard disk drive serves as a case study for model demonstration.

  8. Modeling the value recovery of rare earth permanent magnets at end-of-life

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

    Cong, Liang; Jin, Hongyue; Fitsos, Pete; McIntyre, Timothy; Yih, Yuehwern; Zhao, Fu; Sutherland, John W.

    2015-01-01

    Permanent magnets containing rare earth elements (REEs) such as Dysprosium and Neodymium offer an advantage over non-REE containing magnets (e.g., ferrite and AlNiCo) in terms of power relative to size. However, REE availability has varied significantly in recent years leading to volatility in the cost of rare earth permanent magnets (REPMs). The supply of REEs can be increased by recycling consumer products and industrial machinery that contain REPMs at product end-of-life (EOL). This paper discusses the REE recovery process for EOL products. The optimal dismantling of products is examined with an emphasis placed on obtaining used REPMs. The challenge ofmore »collecting, managing, transporting, and processing used products is addressed through the development of a cost model for REPM recovery. This model is used to investigate several EOL strategies for recovering REPMs. Sensitivity analysis is conducted to identify the key factors that influence value recovery economics. A hard disk drive serves as a case study for model demonstration.« less

  9. Modeling the Value Recovery of Rare Earth Permanent Magnets at End-of-Life

    SciTech Connect (OSTI)

    McIntyre, Timothy J [ORNL

    2015-01-01

    Permanent magnets containing rare earth elements (REEs) such as Dysprosium and Neodymium offer an advantage over non-REE containing magnets (e.g. ferrite or AlNiCo) in terms of power relative to size. However, REE availability has varied significantly in recent years leading to volatility in the cost of rare earth permanent magnets (REPMs). The supply of REEs can be increased by recycling consumer products and industrial machinery that contain REPMs at product end-of-life (EOL). This paper discusses the REE recovery process for EOL products. The optimal dismantling of products is examined with an emphasis placed on obtaining used REPMs. The challenge of collecting, managing, transporting, and processing used products is addressed through the development of a cost model for REPM recovery. This model is used to investigate several EOL strategies for recovering REPMs. Sensitivity analysis is conducted to identify the key factors that influence value recovery economics. A hard disk drive serves as a case study for model demonstration.

  10. Hanna, A., J. Vukovich, S. Arunachalam, D. Loughlin, H.C. Frey, J. Touma, J. Irwin, and V. Isakov, "Assessment of Uncertainty in Benzene Concentration Estimates in the Houston, TX, Area," Proceedings, Annual Meeting of the Air &

    E-Print Network [OSTI]

    Frey, H. Christopher

    , "Assessment of Uncertainty in Benzene Concentration Estimates in the Houston, TX, Area," Proceedings, Annual & Waste Management Association, Pittsburgh, PA, June 2004 1 Assessment of Uncertainty in Benzene for a particular urban area. We present the results of a case study involving benzene emissions in the Houston area

  11. Photometry of symbiotic stars XI. EG And, Z And, BF Cyg, CH Cyg, CI Cyg, V1329 Cyg, TX CVn, AG Dra, RW Hya, QW Sge, IV Vir and the LMXB V934 Her

    E-Print Network [OSTI]

    A. Skopal; T. Pribulla; M. Vanko; Z. Velic; E. Semkov; M. Wolf; A. Jones

    2004-02-06

    We present new photometric observations of EG And, Z And, BF Cyg, CH Cyg, CI Cyg, V1329 Cyg, TX CVn, AG Dra, RW Hya, AR Pav, AG Peg, AX Per, QW Sge, IV Vir and the peculiar M giant V934 Her. The current issue gathers observations of these objects to December 2003.

  12. Theory of dissociative recombination of a linear triatomic ion with permanent electric dipole moment: Study of HCO$^{+}$

    E-Print Network [OSTI]

    Nicolas Douguet; Viatcheslav Kokoouline; Chris H. Greene

    2009-10-27

    We present a theoretical description of dissociative recombination of triatomic molecular ions having large permanent dipole moments. The study has been partly motivated by a discrepancy between experimental and theoretical cross-sections for dissociative recombination of the HCO$^+$ ion. The HCO$^{+}$ ion has a considerable permanent dipole moment ($D\\approx$4 debye), which has not been taken explicitly into account in previous theoretical studies. In the present study, we include explicitly the effect of the permanent electric dipole on the dynamics of the incident electron using the generalized quantum defect theory, and we present the resulting cross section obtained. This is the first application of generalized quantum defect theory to the dissociative recombination of molecular ions.

  13. Exploratory Characterization of a Perfluoropolyether Oil as a Possible Viscosity Standard at Deepwater Production Conditions of 533 K and 241 MPa

    SciTech Connect (OSTI)

    Baled, Hseen O.; Tapriyal, Deepak; Morreale, Bryan D.; Soong, Yee; Gamwo, Isaac; Krukonis, Val; Bamgbade, Babatunde A.; Wu, Yue; McHugh, Mark A.; Burgess, Ward A.; M Enick, Robert M.

    2013-10-01

    DuPont’s perfluoropolyether oil Krytox® GPL 102 is a promising candidate for the high-temperature, high-pressure Deepwater viscosity standard (DVS). The preferred DVS is a thermally stable liquid that exhibits a viscosity of roughly 20 mPa?s at 533 K and 241 MPa; a viscosity value representative of light oils found in ultra-deep formations beneath the deep waters of the Gulf of Mexico. A windowed rolling-ball viscometer designed by our team is used to determine the Krytox® GPL 102 viscosity at pressures to 245 MPa and temperatures of 311 K, 372 K, and 533 K. At 533 K and 243 MPa, the Krytox® GPL 102 viscosity is (27.2±1.3)mPa?s . The rolling-ball viscometer viscosity results for Krytox® GPL 102 are correlated with an empirical 10-parameter surface fitting function that yields an MAPD of 3.9 %. A Couette rheometer is also used to measure the Krytox® GPL 102 viscosity, yielding a value of (26.2±1)mPa?s at 533 K and 241 MPa. The results of this exploratory study suggest that Krytox® GPL 102 is a promising candidate for the DVS, primarily because this fluoroether oil is thermally stable and exhibits a viscosity closer to the targeted value of 20 mPa ? s at 533 K and 241 MPa than any other fluid reported to date. Nonetheless, further studies must be conducted by other researcher groups using various types of viscometers and rheometers on samples of Krytox GPL® 102 from the same lot to further establish the properties of Krytox GPL® 102.

  14. Memorandum Approval of a Permanent Variance Regarding Sprinklers and Fire Boundaries in Selected Areas of 22 1-H Canyon at the Savannah River Site

    Broader source: Energy.gov [DOE]

    Approval of a Permanent Variance Regarding Sprinklers and Fire Boundaries in Selected Areas of 22 1 -H Canyon at the Savannah River Site

  15. Memorandum, Approval of a Permanent Variance Regarding Sprinklers and Fire Boundaries in Selected Areas of 22 1-H Canyon at the Savannah River Site

    Broader source: Energy.gov [DOE]

    Approval of a Permanent Variance Regarding Fire Safety in Selected Areas of 221-H Canyon at the Savannah River Site UNDER SECRETARY OF ENERGY

  16. Container for reprocessing and permanent storage of spent nuclear fuel assemblies

    DOE Patents [OSTI]

    Forsberg, C.W.

    1992-03-24

    A single canister process container is described for reprocessing and permanent storage of spent nuclear fuel assemblies comprising zirconium-based cladding and fuel, which process container comprises a collapsible container, having side walls that are made of a high temperature alloy and an array of collapsible support means wherein the container is capable of withstanding temperature necessary to oxidize the zirconium-based cladding and having sufficient ductility to maintain integrity when collapsed under pressure. The support means is also capable of maintaining its integrity at a temperature necessary to oxidize the zirconium-based cladding. The process container also has means to introduce and remove fluids to and from the container. 10 figs.

  17. Adaptive fuzzy dynamic surface control for the chaotic permanent magnet synchronous motor using Nussbaum gain

    SciTech Connect (OSTI)

    Luo, Shaohua [School of Automation, Chongqing University, Chongqing 400044, China and College of Mechanical Engineering, Hunan University of Arts and Science, Hunan 415000 (China)

    2014-09-01

    This paper is concerned with the problem of adaptive fuzzy dynamic surface control (DSC) for the permanent magnet synchronous motor (PMSM) system with chaotic behavior, disturbance and unknown control gain and parameters. Nussbaum gain is adopted to cope with the situation that the control gain is unknown. And the unknown items can be estimated by fuzzy logic system. The proposed controller guarantees that all the signals in the closed-loop system are bounded and the system output eventually converges to a small neighborhood of the desired reference signal. Finally, the numerical simulations indicate that the proposed scheme can suppress the chaos of PMSM and show the effectiveness and robustness of the proposed method.

  18. Radiofrequency hydrogen ion source with permanent magnets providing axial magnetic field

    SciTech Connect (OSTI)

    Oikawa, Kohei, E-mail: oikawa@ecei.tohoku.ac.jp; Saito, Yuta; Komizunai, Shota; Takahashi, Kazunori; Ando, Akira [Department of Electrical Engineering, Tohoku University, Sendai 980-8579 (Japan)] [Department of Electrical Engineering, Tohoku University, Sendai 980-8579 (Japan)

    2014-02-15

    Uniform axial magnetic field of about 70 G is applied to a radiofrequency (rf) hydrogen ion source by arrays of permanent magnets. The plasma density and electron temperature downstream of the source and near the magnetic filter are compared with those in the previously described ion source, where the axial field has been applied by two solenoids. The source is operated at ?350 kHz and above 10 kW rf power with a field-effect-transistor-based invertor power supply in 1.5 Pa hydrogen. The results show that the plasma density of ?10{sup 19} m{sup ?3} near the source exit and ?10{sup 18} m{sup ?3} near the magnetic filter can be obtained, which are higher than those with the solenoids.

  19. Dose calculation for permanent prostate implants incorporating spatially anisotropic linearly time-resolving edema

    SciTech Connect (OSTI)

    Monajemi, T. T.; Clements, Charles M.; Sloboda, Ron S. [Department of Medical Physics, Cross Cancer Institute, Edmonton, Alberta T6G 1Z2 (Canada) and Department of Oncology, University of Alberta, Edmonton, Alberta T6G 2R3 (Canada); Department of Physics, University of Alberta, Edmonton, Alberta T6G 2R3 (Canada); Department of Medical Physics, Cross Cancer Institute, Edmonton, Alberta T6G 1Z2 (Canada); Department of Oncology, University of Alberta, Edmonton, Alberta T6G 2R3 (Canada) and Department of Physics, University of Alberta, Edmonton, Alberta T6G 2R3 (Canada)

    2011-04-15

    Purpose: The objectives of this study were (i) to develop a dose calculation method for permanent prostate implants that incorporates a clinically motivated model for edema and (ii) to illustrate the use of the method by calculating the preimplant dosimetry error for a reference configuration of {sup 125}I, {sup 103}Pd, and {sup 137}Cs seeds subject to edema-induced motions corresponding to a variety of model parameters. Methods: A model for spatially anisotropic edema that resolves linearly with time was developed based on serial magnetic resonance imaging measurements made previously at our center to characterize the edema for a group of n=40 prostate implant patients [R. S. Sloboda et al., ''Time course of prostatic edema post permanent seed implant determined by magnetic resonance imaging,'' Brachytherapy 9, 354-361 (2010)]. Model parameters consisted of edema magnitude, {Delta}, and period, T. The TG-43 dose calculation formalism for a point source was extended to incorporate the edema model, thus enabling calculation via numerical integration of the cumulative dose around an individual seed in the presence of edema. Using an even power piecewise-continuous polynomial representation for the radial dose function, the cumulative dose was also expressed in closed analytical form. Application of the method was illustrated by calculating the preimplant dosimetry error, RE{sub preplan}, in a 5x5x5 cm{sup 3} volume for {sup 125}I (Oncura 6711), {sup 103}Pd (Theragenics 200), and {sup 131}Cs (IsoRay CS-1) seeds arranged in the Radiological Physics Center test case 2 configuration for a range of edema relative magnitudes ({Delta}=[0.1,0.2,0.4,0.6,1.0]) and periods (T=[28,56,84] d). Results were compared to preimplant dosimetry errors calculated using a variation of the isotropic edema model developed by Chen et al. [''Dosimetric effects of edema in permanent prostate seed implants: A rigorous solution,'' Int. J. Radiat. Oncol., Biol., Phys. 47, 1405-1419 (2000)]. Results: As expected, RE{sub preplan} for our edema model indicated underdosage in the calculation volume with a clear dependence on seed and calculation point positions, and increased with increasing values of {Delta} and T. Values of RE{sub preplan} were generally larger near the ends of the virtual prostate in the RPC phantom compared with more central locations. For edema characteristics similar to the population average values previously measured at our center, i.e., {Delta}=0.2 and T=28 d, mean values of RE{sub preplan} in an axial plane located 1.5 cm from the center of the seed distribution were 8.3% for {sup 131}Cs seeds, 7.5% for {sup 103}Pd seeds, and 2.2% for {sup 125}I seeds. Maximum values of RE{sub preplan} in the same plane were about 1.5 times greater. Note that detailed results strictly apply only for loose seed implants where the seeds are fixed in tissue and move in synchrony with that tissue. Conclusions: A dose calculation method for permanent prostate implants incorporating spatially anisotropic linearly time-resolving edema was developed for which cumulative dose can be written in closed form. The method yields values for RE{sub preplan} that differ from those for spatially isotropic edema. The method is suitable for calculating pre- and postimplant dosimetry correction factors for clinical seed configurations when edema characteristics can be measured or estimated.

  20. Calculation of cogging force in a novel slotted linear tubular brushless permanent magnet motor

    SciTech Connect (OSTI)

    Zhu, Z.Q.; Hor, P.J.; Howe, D. [Univ. of Sheffield (United Kingdom). Dept. of Electronic and Electrical Engineering] [Univ. of Sheffield (United Kingdom). Dept. of Electronic and Electrical Engineering; Rees-Jones, J. [Unilever Research Port Sunlight Lab., Bebington (United Kingdom)] [Unilever Research Port Sunlight Lab., Bebington (United Kingdom)

    1997-09-01

    There is an increasing requirement for controlled linear motion over short and long strokes, in the factory automation and packaging industries, for example. Linear brushless PM motors could offer significant advantages over conventional actuation technologies, such as motor driven cams and linkages and pneumatic rams--in terms of efficiency, operating bandwidth, speed and thrust control, stroke and positional accuracy, and indeed over other linear motor technologies, such as induction motors. Here, a finite element/analytical based technique for the prediction of cogging force in a novel topology of slotted linear brushless permanent magnet motor has been developed and validated. The various force components, which influence cogging are pre-calculated by the finite element analysis of some basic magnetic structures, facilitate the analytical synthesis of the resultant cogging force. The technique can be used to aid design for the minimization of cogging.

  1. Testing and monitoring plan for the permanent isolation surface barrier prototype

    SciTech Connect (OSTI)

    Gee, G.W.; Cadwell, L.L.; Freeman, H.D.; Ligotke, M.W.; Link, S.O.; Romine, R.A.; Walters, W.H. Jr.

    1993-06-01

    This document is a testing and monitoring plan for a prototype barrier to be constructed at the Hanford Site in 1993. The prototype barrier is an aboveground structure engineered to demonstrate the basic features of an earthen cover system, designed to permanently isolate waste from the biosphere. These features include multiple layers of soil and rock materials and a low-permeability asphalt sublayer. The surface of the barrier consists of silt loam soil, vegetated with plants. The barrier sides are reinforced with rock or coarse earthen-fill to protect against wind and water erosion. The sublayers inhibit plant and animal intrusion and percolation of water. A series of tests will be conducted on the prototype over the next several years to evaluate barrier performance under extreme climatic conditions.

  2. Summary of key directives governing permanent disposal in a geologic repository

    SciTech Connect (OSTI)

    Sands, S.C. III

    1993-11-01

    This document was developed in support of the Idaho National Engineering Laboratory (INEL) Spent Fuel and Waste Management Technology Development Program (SF&WMTDP). It is largely comprised of flow diagrams summarizing the key regulatory requirements which govern permanent disposal in a geologic repository. The key purposes are (1) to provide an easy and effective tool for referencing or cross referencing federal directives (i.e., regulations and orders), (2) to provide a method for examining the requirements in one directive category against the requirements in another, and (3) to list actions that must be taken to ensure directive compliance. The document is categorically broken down into a Transportation section and a Mined Geologic Disposal System (MGDS) section to ensure that the interrelationship of the entire disposal system is considered. The Transportation section describes the transportation packaging requirements, testing methods, and safety requirements imposed on fissile material shipments. The MGDS section encompasses technical aspects involved in siting, licensing, waste interaction with the container, container design features, physical characteristics of the surrounding environment, facility design features, barrier systems, safety features, criticality considerations, migration restrictions, implementation guidelines, and so forth. For purposes of illustration, the worst case scenario is outlined. It is important that the approaches and considerations contained in this document be integrated into the efforts of the SF&WMTDP so that every applicable aspect of the regulatory requirements can be evaluated to avoid investing large sums of money into projects that do not take into account all of the aspects of permanent waste disposal. Not until an overall picture and clear understanding of these regulations is established can a basis be developed to govern the direction of future activities of the SF&WMTDP.

  3. Cluster expansion modeling and Monte Carlo simulation of alnico 5–7 permanent magnets

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

    Nguyen, Manh Cuong; Zhao, Xin; Wang, Cai -Zhuang; Ho, Kai -Ming

    2015-03-05

    The concerns about the supply and resource of rare earth (RE) metals have generated a lot of interests in searching for high performance RE-free permanent magnets. Alnico alloys are traditional non-RE permanent magnets and have received much attention recently due their good performance at high temperature. In this paper, we develop an accurate and efficient cluster expansion energy model for alnico 5–7. Monte Carlo simulations using the cluster expansion method are performed to investigate the structure of alnico 5–7 at atomistic and nano scales. The alnico 5–7 master alloy is found to decompose into FeCo-rich and NiAl-rich phases at lowmore »temperature. The boundary between these two phases is quite sharp (~2 nm) for a wide range of temperature. The compositions of the main constituents in these two phases become higher when the temperature gets lower. Both FeCo-rich and NiAl-rich phases are in B2 ordering with Fe and Al on ?-site and Ni and Co on ?-site. The degree of order of the NiAl-rich phase is much higher than that of the FeCo-rich phase. In addition, a small magnetic moment is also observed in NiAl-rich phase but the moment reduces as the temperature is lowered, implying that the magnetic properties of alnico 5–7 could be improved by lowering annealing temperature to diminish the magnetism in NiAl-rich phase. Furthermore, the results from our Monte Carlo simulations are consistent with available experimental results.« less

  4. Design of low-power permanent-magnet synchronous motor for use in high-density heat pump

    E-Print Network [OSTI]

    Jenicek, David P. (David Pierre)

    2011-01-01

    An analytical model for the functionality of a permanent-magnet synchronous motor is developed. Taking as input a specific geometry, it predicts steady-state losses of a design at an average rate of 0.85 seconds per analysis, ...

  5. Design and Empirical Identification of a Lumped Parameter Thermal Network for Permanent Magnet Synchronous Motors with Physically

    E-Print Network [OSTI]

    Noé, Reinhold

    Synchronous Motors with Physically Motivated Constraints Oliver Wallscheid, Student Member, IEEE, Joachim B¨ocker, Senior Member, IEEE Abstract--Monitoring critical temperatures in permanent magnet synchronous motors (PMSM) is essential to prevent device failures or excessive motor life time reduction due to thermal

  6. IEEE TRANSACTIONS ON MAGNETICS, VOL. 43, NO. 9, SEPTEMBER 2007 3623 Doubly Salient Permanent-Magnet Machine With Skewed Rotor

    E-Print Network [OSTI]

    Mi, Chunting "Chris"

    to control the motor. We validated the feasibility of these new design concepts by simulations, field SALIENT permanent-magnet machine (DSPM), a new kind of inverter-fed electrical traction motor first, such as high efficiency, high power density, and simple structure. Much progress has been made on the design

  7. Global modeling of cancer gene expression signa-Cancer leads to permanent changes in cell's physiological state and various

    E-Print Network [OSTI]

    Kaski, Samuel

    Global modeling of cancer gene expression signa- tures Cancer leads to permanent changes in cell cancer types. Less is known about the underlying biological processes, or relationships between different cancer types with respect to these changes. While each specific cancer type has a set of unique

  8. IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 36, NO. 5, OCTOBER 2008 2095 Permanent Magnet Helicon Source for Ion Propulsion

    E-Print Network [OSTI]

    Chen, Francis F.

    IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 36, NO. 5, OCTOBER 2008 2095 Permanent Magnet Helicon Source for Ion Propulsion Francis F. Chen, Life Fellow, IEEE Abstract--Helicon sources have been proposed by at least two groups for generating ions for space propulsion: the Helicon Dou- ble Layer Thruster (HDLT

  9. sedimentation under permanent ice cover in the Arc-tic Ocean. Cont. Shelf Res. 14: 279-293.

    E-Print Network [OSTI]

    390 Notes sedimentation under permanent ice cover in the Arc- tic Ocean. Cont. Shelf Res. 14: 279-293. HAWLEY, N. 1988. Flow in cylindrical sediment traps. J. Great Lakes Res. 14: 76-88. HOLM-HANSEN, O., C. J. Effectiveness of various treatments in retarding mi- crobial activity in sediment trap material

  10. Brushed permanent magnet DC MLC motor operation in an external magnetic field

    SciTech Connect (OSTI)

    Yun, J.; St Aubin, J.; Rathee, S.; Fallone, B. G.

    2010-05-15

    Purpose: Linac-MR systems for real-time image-guided radiotherapy will utilize the multileaf collimators (MLCs) to perform conformal radiotherapy and tumor tracking. The MLCs would be exposed to the external fringe magnetic fields of the linac-MR hybrid systems. Therefore, an experimental investigation of the effect of an external magnetic field on the brushed permanent magnet DC motors used in some MLC systems was performed. Methods: The changes in motor speed and current were measured for varying external magnetic field strengths up to 2000 G generated by an EEV electromagnet. These changes in motor characteristics were measured for three orientations of the motor in the external magnetic field, mimicking changes in motor orientations due to installation and/or collimator rotations. In addition, the functionality of the associated magnetic motor encoder was tested. The tested motors are used with the Varian 120 leaf Millennium MLC (Maxon Motor half leaf and full leaf motors) and the Varian 52 leaf MKII MLC (MicroMo Electronics leaf motor) including a carriage motor (MicroMo Electronics). Results: In most cases, the magnetic encoder of the motors failed prior to any damage to the gearbox or the permanent magnet motor itself. This sets an upper limit of the external magnetic field strength on the motor function. The measured limits of the external magnetic fields were found to vary by the motor type. The leaf motor used with a Varian 52 leaf MKII MLC system tolerated up to 450{+-}10 G. The carriage motor tolerated up to 2000{+-}10 G field. The motors used with the Varian 120 leaf Millennium MLC system were found to tolerate a maximum of 600{+-}10 G. Conclusions: The current Varian MLC system motors can be used for real-time image-guided radiotherapy coupled to a linac-MR system, provided the fringe magnetic fields at their locations are below the determined tolerance levels. With the fringe magnetic fields of linac-MR systems expected to be larger than the tolerance levels determined, some form of magnetic shielding would be required.

  11. 16,000-rpm Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation

    SciTech Connect (OSTI)

    Hsu, J.S.; Burress, T.A.; Lee, S.T.; Wiles, R.H.; Coomer, C.L.; McKeever, J.W.; Adams, D.J.

    2007-10-31

    The reluctance interior permanent magnet (RIPM) motor is currently used by many leading auto manufacturers for hybrid vehicles. The power density for this type of motor is high compared with that of induction motors and switched reluctance motors. The primary drawback of the RIPM motor is the permanent magnet (PM) because during high-speed operation, the fixed PM produces a huge back electromotive force (emf) that must be reduced before the current will pass through the stator windings. This reduction in back-emf is accomplished with a significant direct-axis (d-axis) demagnetization current, which opposes the PM's flux to reduce the flux seen by the stator wires. This may lower the power factor and efficiency of the motor and raise the requirement on the alternate current (ac) power supply; consequently, bigger inverter switching components, thicker motor winding conductors, and heavier cables are required. The direct current (dc) link capacitor is also affected when it must accommodate heavier harmonic currents. It is commonly agreed that, for synchronous machines, the power factor can be optimized by varying the field excitation to minimize the current. The field produced by the PM is fixed and cannot be adjusted. What can be adjusted is reactive current to the d-axis of the stator winding, which consumes reactive power but does not always help to improve the power factor. The objective of this project is to avoid the primary drawbacks of the RIPM motor by introducing brushless field excitation (BFE). This offers both high torque per ampere (A) per core length at low speed by using flux, which is enhanced by increasing current to a fixed excitation coil, and flux, which is weakened at high speed by reducing current to the excitation coil. If field weakening is used, the dc/dc boost converter used in a conventional RIPM motor may be eliminated to reduce system costs. However, BFE supports a drive system with a dc/dc boost converter, because it can further extend the constant power speed range of the drive system and adjust the field for power factor and efficiency gains. Lower core losses at low torque regions, especially at high speeds, are attained by reducing the field excitation. Safety and reliability are increased by weakening the field when a winding short-circuit fault occurs, preventing damage to the motor. For a high-speed motor operating at 16,000-revolutions per minute (rpm), mechanical stress is a challenge. Bridges that link the rotor punching segments together must be thickened for mechanical integrity; consequently, increased rotor flux leakage significantly lowers motor performance. This barrier can be overcome by BFE to ensure sufficient rotor flux when needed.

  12. Table 2 -Lime use and practices on Corn, major producing states, 2001 CO GA IL IN IA KS KY MI MN MO NE NY NC ND OH PA SD TX WI Area

    E-Print Network [OSTI]

    Kammen, Daniel M.

    MO NE NY NC ND OH PA SD TX WI Area Lime applied NR 85 81 85 67 16 72 55 27 65 10 57 53 NR 70 95 3 1 50 51 Lime (tons treated acre) NR 1.0 2.1 1.9 2.5 2.1 2.4 2.0 2.6 2.8 1.5 1.9 1.1 NR 1.9 1.7 NR 0.5 2 NC ND OH PA SD TX WI Area Lime applied NR 95 90 69 18 69 71 14 77 16 76 99 NR 82 80 NR 5 58 54 Lime

  13. Submergible barge retrievable storage and permanent disposal system for radioactive waste

    DOE Patents [OSTI]

    Goldsberry, Fred L. (Spring, TX); Cawley, William E. (Richland, WA)

    1981-01-01

    A submergible barge and process for submerging and storing radioactive waste material along a seabed. A submergible barge receives individual packages of radwaste within segregated cells. The cells are formed integrally within the barge, preferably surrounded by reinforced concrete. The cells are individually sealed by a concrete decking and by concrete hatch covers. Seawater may be vented into the cells for cooling, through an integral vent arrangement. The vent ducts may be attached to pumps when the barge is bouyant. The ducts are also arranged to promote passive ventilation of the cells when the barge is submerged. Packages of the radwaste are loaded into individual cells within the barge. The cells are then sealed and the barge is towed to the designated disposal-storage site. There, the individual cells are flooded and the barge will begin descent controlled by a powered submarine control device to the seabed storage site. The submerged barge will rest on the seabed permanently or until recovered by a submarine control device.

  14. Control of Two Permanent Magnet Machines Using a Five-Leg Inverter for Automotive Applications

    SciTech Connect (OSTI)

    Su, Gui-Jia [ORNL; Tang, Lixin [ORNL; Huang, Xianghui [GE Global Research

    2006-01-01

    This paper presents digital control schemes for control of two permanent magnet (PM) machines in an integrated traction and air-conditioning compressor drive system for automotive applications. The integrated drive system employs a five-leg inverter to power a three-phase traction PM motor and a two-phase compressor PM motor by tying the common terminal of the two-phase motor to the neutral point of the three-phase motor. Compared to a three-phase or a standalone two-phase inverter, it eliminates one phase leg and shares the control electronics between the two drives, thus significantly reducing the component count of the compressor drive. To demonstrate that the speed and torque of the two PM motors can be controlled independently, a control strategy was implemented in a digital signal processor, which includes a rotor flux field orientation based control (RFOC) for the three-phase motor, a similar RFOC and a position sensorless control in the brushless dc (BLDC) mode for the two-phase motor. Control implementation issues unique to a two-phase PM motor are also discussed. Test results with the three-phase motor running in the ac synchronous (ACS) mode while the two-phase motor either in the ACS or the BLDC mode are included to verify the independent speed and torque control capability of the integrated drive.

  15. Characterization of fold defects in AZ91D and AE42 magnesium alloy permanent mold castings

    SciTech Connect (OSTI)

    Bichler, L. [Centre for Near-net-shape Processing of Materials, Ryerson University, 101 Gerrard St. E., Toronto, M5B 2K3 (Canada); Ravindran, C., E-mail: rravindr@ryerson.ca [Centre for Near-net-shape Processing of Materials, Ryerson University, 101 Gerrard St. E., Toronto, M5B 2K3 (Canada)

    2010-03-15

    Casting premium-quality magnesium alloy components for aerospace and automotive applications poses unique challenges. Magnesium alloys are known to freeze rapidly prior to filling a casting cavity, resulting in misruns and cold shuts. In addition, melt oxidation, solute segregation and turbulent metal flow during casting contribute to the formation of fold defects. In this research, formation of fold defects in AZ91D and AE42 magnesium alloys cast via the permanent mold casting process was investigated. Computer simulations of the casting process predicted the development of a turbulent metal flow in a critical casting region with abrupt geometrical transitions. SEM and light optical microscopy examinations revealed the presence of folds in this region for both alloys. However, each alloy exhibited a unique mechanism responsible for fold formation. In the AZ91D alloy, melt oxidation and velocity gradients in the critical casting region prevented fusion of merging metal front streams. In the AE42 alloy, limited solubility of rare-earth intermetallic compounds in the {alpha}-Mg phase resulted in segregation of Al{sub 2}RE particles at the leading edge of a metal front and created microstructural inhomogeneity across the fold.

  16. Fast dose kernel interpolation using Fourier transform with application to permanent prostate brachytherapy dosimetry

    SciTech Connect (OSTI)

    Liu, Derek Sloboda, Ron S.

    2014-05-15

    Purpose: Boyer and Mok proposed a fast calculation method employing the Fourier transform (FT), for which calculation time is independent of the number of seeds but seed placement is restricted to calculation grid points. Here an interpolation method is described enabling unrestricted seed placement while preserving the computational efficiency of the original method. Methods: The Iodine-125 seed dose kernel was sampled and selected values were modified to optimize interpolation accuracy for clinically relevant doses. For each seed, the kernel was shifted to the nearest grid point via convolution with a unit impulse, implemented in the Fourier domain. The remaining fractional shift was performed using a piecewise third-order Lagrange filter. Results: Implementation of the interpolation method greatly improved FT-based dose calculation accuracy. The dose distribution was accurate to within 2% beyond 3 mm from each seed. Isodose contours were indistinguishable from explicit TG-43 calculation. Dose-volume metric errors were negligible. Computation time for the FT interpolation method was essentially the same as Boyer's method. Conclusions: A FT interpolation method for permanent prostate brachytherapy TG-43 dose calculation was developed which expands upon Boyer's original method and enables unrestricted seed placement. The proposed method substantially improves the clinically relevant dose accuracy with negligible additional computation cost, preserving the efficiency of the original method.

  17. Periodic permanent magnet development for linear collider X-band klystrons

    SciTech Connect (OSTI)

    Sprehn, D.; Caryotakis, G.; Jongewaard, E.; Phillips, R. [Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)

    1999-05-07

    The Stanford Linear Accelerator Center (SLAC) klystron group is currently designing, fabricating and testing 11.424 GHz klystrons with peak output powers from 50 to 75 MW at 1 to 2 {mu}s rf pulsewidths as part of an effort to realize components necessary for the construction of the Next Linear Collider (NLC). In order to eliminate the projected operational-year energy bill for klystron solenoids, Periodic Permanent Magnet (PPM) focusing has been employed on our latest X-band klystron designs. A PPM beam tester has operated at the same repetition rate, voltage and average beam power required for a 75-MW NLC klystron. Prototype 50 and 75-MW PPM klystrons were built and tested during 1996 and 1997 which operate from 50 to 70 MW at efficiencies greater than 55%. Construction and testing of 75-MW research klystrons will continue while the design and reliability is perfected. This paper will discuss the design of these PPM klystrons and the results of testing to date along with future plans for the development of a low-cost Design for Manufacture (DFM) 75-MW klystron and invitation for industry participation.

  18. Periodic permanent magnet development for linear collider X-band klystrons

    SciTech Connect (OSTI)

    Sprehn, D.; Caryotakis, G.; Jongewaard, E.; Phillips, R. [Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)

    1999-05-01

    The Stanford Linear Accelerator Center (SLAC) klystron group is currently designing, fabricating and testing 11.424 GHz klystrons with peak output powers from 50 to 75 MW at 1 to 2 {mu}s rf pulsewidths as part of an effort to realize components necessary for the construction of the Next Linear Collider (NLC). In order to eliminate the projected operational-year energy bill for klystron solenoids, Periodic Permanent Magnet (PPM) focusing has been employed on our latest X-band klystron designs. A PPM beam tester has operated at the same repetition rate, voltage and average beam power required for a 75-MW NLC klystron. Prototype 50 and 75-MW PPM klystrons were built and tested during 1996 and 1997 which operate from 50 to 70 MW at efficiencies greater than 55{percent}. Construction and testing of 75-MW research klystrons will continue while the design and reliability is perfected. This paper will discuss the design of these PPM klystrons and the results of testing to date along with future plans for the development of a low-cost Design for Manufacture (DFM) 75-MW klystron and invitation for industry participation. {copyright} {ital 1999 American Institute of Physics.}

  19. The search for permanent electric dipole moments, in particular for the one of the neutron

    ScienceCinema (OSTI)

    None

    2011-10-06

    Nonzero permanent electric dipole moments (EDM) of fundamental systems like particles, nuclei, atoms or molecules violate parity and time reversal invariance. Invoking the CPT theorem, time reversal violation implies CP violation. Although CP-violation is implemented in the standard electro-weak theory, EDM generated this way remain undetectably small. However, this CP-violation also appears to fail explaining the observed baryon asymmetry of our universe. Extensions of the standard theory usually include new CP violating phases which often lead to the prediciton of larger EDM. EDM searches in different systems are complementary and various efforts worldwide are underway, but no finite value could be established yet. An improved search for the EDM of the neutron requires, among other things, much better statistics. At PSI, we are presently commissioning a new high intensity source of ultracold neutrons. At the same time, with an international collaboration, we are setting up for a new measurement of the neutron EDM which is starting this year.

  20. Measurement of Permanent Electric Dipole Moments of Charged Hadrons in Storage Rings

    E-Print Network [OSTI]

    Jörg Pretz

    2013-07-30

    Permanent Electric Dipole Moments (EDMs) of elementary particles violate two fundamental symmetries: time reversal invariance (T) and parity (P). Assuming the CPT theorem this implies CP-violation. The CP-violation of the Standard Model is orders of magnitude too small to be observed experimentally in EDMs in the foreseeable future. It is also way too small to explain the asymmetry in abundance of matter and anti-matter in our universe. Hence, other mechanisms of CP violation outside the realm of the Standard Model are searched for and could result in measurable EDMs. Up to now most of the EDM measurements were done with neutral particles. With new techniques it is now possible to perform dedicated EDM experiments with charged hadrons at storage rings where polarized particles are exposed to an electric field. If an EDM exists the spin vector will experience a torque resulting in change of the original spin direction which can be determined with the help of a polarimeter. Although the principle of the measurement is simple, the smallness of the expected effect makes this a challenging experiment requiring new developments in various experimental areas. Complementary efforts to measure EDMs of proton, deuteron and light nuclei are pursued at Brookhaven National Laboratory and at Forschungszentrum Juelich with an ultimate goal to reach a sensitivity of 10^{-29} e cm.

  1. Carbon Dioxide-Water Emulsions for Enhanced Oil Recovery and Permanent Sequestration of Carbon Dioxide

    SciTech Connect (OSTI)

    Ryan, David; Golomb, Dan; Shi, Guang; Shih, Cherry; Lewczuk, Rob; Miksch, Joshua; Manmode, Rahul; Mulagapati, Srihariraju; Malepati, Chetankurmar

    2011-09-30

    This project involves the use of an innovative new invention ? Particle Stabilized Emulsions (PSEs) of Carbon Dioxide-in-Water and Water-in-Carbon Dioxide for Enhanced Oil Recovery (EOR) and Permanent Sequestration of Carbon Dioxide. The EOR emulsion would be injected into a semi-depleted oil reservoir such as Dover 33 in Otsego County, Michigan. It is expected that the emulsion would dislocate the stranded heavy crude oil from the rock granule surfaces, reduce its viscosity, and increase its mobility. The advancing emulsion front should provide viscosity control which drives the reduced-viscosity oil toward the production wells. The make-up of the emulsion would be subsequently changed so it interacts with the surrounding rock minerals in order to enhance mineralization, thereby providing permanent sequestration of the injected CO{sub 2}. In Phase 1 of the project, the following tasks were accomplished: 1. Perform laboratory scale (mL/min) refinements on existing procedures for producing liquid carbon dioxide-in-water (C/W) and water-in-liquid carbon dioxide (W/C) emulsion stabilized by hydrophilic and hydrophobic fine particles, respectively, using a Kenics-type static mixer. 2. Design and cost evaluate scaled up (gal/min) C/W and W/C emulsification systems to be deployed in Phase 2 at the Otsego County semi-depleted oil field. 3. Design the modifications necessary to the present CO{sub 2} flooding system at Otsego County for emulsion injection. 4. Design monitoring and verification systems to be deployed in Phase 2 for measuring potential leakage of CO{sub 2} after emulsion injection. 5. Design production protocol to assess enhanced oil recovery with emulsion injection compared to present recovery with neat CO{sub 2} flooding. 6. Obtain Federal and State permits for emulsion injection. Initial research focused on creating particle stabilized emulsions with the smallest possible globule size so that the emulsion can penetrate even low-permeability crude oilcontaining formations or saline aquifers. The term ?globule? refers to the water or liquid carbon dioxide droplets sheathed with ultrafine particles dispersed in the continuous external medium, liquid CO{sub 2} or H{sub 2}O, respectively. The key to obtaining very small globules is the shear force acting on the two intermixing fluids, and the use of ultrafine stabilizing particles or nanoparticles. We found that using Kenics-type static mixers with a shear rate in the range of 2700 to 9800 s{sup -1} and nanoparticles between 100-300 nm produced globule sizes in the 10 to 20 ?m range. Particle stabilized emulsions with that kind of globule size should easily penetrate oil-bearing formations or saline aquifers where the pore and throat size can be on the order of 50 ?m or larger. Subsequent research focused on creating particle stabilized emulsions that are deemed particularly suitable for Permanent Sequestration of Carbon Dioxide. Based on a survey of the literature an emulsion consisting of 70% by volume of water, 30% by volume of liquid or supercritical carbon dioxide, and 2% by weight of finely pulverized limestone (CaCO{sub 3}) was selected as the most promising agent for permanent sequestration of CO{sub 2}. In order to assure penetration of the emulsion into tight formations of sandstone or other silicate rocks and carbonate or dolomite rock, it is necessary to use an emulsion consisting of the smallest possible globule size. In previous reports we described a high shear static mixer that can create such small globules. In addition to the high shear mixer, it is also necessary that the emulsion stabilizing particles be in the submicron size, preferably in the range of 0.1 to 0.2 ?m (100 to 200 nm) size. We found a commercial source of such pulverized limestone particles, in addition we purchased under this DOE Project a particle grinding apparatus that can provide particles in the desired size range. Additional work focused on attempts to generate particle stabilized emulsions with a flow through, static mixer based apparatus under a variety

  2. Intended Minor (if applicable)Intended Major If yes, date your card was issued: Card numberAre you a Permanent Resident, Asylee, or Refugee in the U.S.?

    E-Print Network [OSTI]

    Caughman, John

    numberAre you a Permanent Resident, Asylee, or Refugee in the U.S.? Enclose a photocopy of the front and back of your Permanent Resident, Asylee, or Refugee Card Yes No Pending Do you wish to be considered

  3. Intended Minor (if applicable)Intended Major If yes, date your card was issued: Card numberAre you a Permanent Resident, Asylee, or Refugee in the U.S.?

    E-Print Network [OSTI]

    Latiolais, M. Paul

    numberAre you a Permanent Resident, Asylee, or Refugee in the U.S.? Enclose a photocopy of the front and back of your Permanent Resident, Asylee, or Refugee Card Yes No Pending If you are neither a citizen

  4. Read/write head having a GMR sensor biased by permanent magnets located between the GMR and the pole shields

    DOE Patents [OSTI]

    Yuan, Samuel W. (San Carlos, CA); Rottmayer, Robert Earl (Fremont, CA); Carey, Matthew J. (San Jose, CA)

    1999-01-01

    A compact read/write head having a biased giant magnetoresistive sensor. Permanent magnet films are placed adjacent to the giant magnetoresistive sensor operating in the current-perpendicular-to the-plane (Cpp) mode and spaced with respect to the sensor by conducting films. These permanent magnet films provide a magnetic bias. The bias field is substantial and fairly uniform across sensor height. Biasing of the giant magnetoresistive sensor provides distinguishable response to the rising and falling edges of a recorded pulse on an adjacent recording medium, improves the linearity of the response, and helps to reduce noise. This read/write head is much simpler to fabricate and pattern and provides an enhanced uniformity of the bias field throughout the sensor.

  5. Topology of surfaces for molecular Stark energy, alignment and orientation generated by combined permanent and induced electric dipole interactions

    E-Print Network [OSTI]

    Burkhard Schmidt; Bretislav Friedrich

    2013-12-20

    We show that combined permanent and induced electric dipole interactions of polar and polarizable molecules with collinear electric fields lead to a sui generis topology of the corresponding Stark energy surfaces and of other observables - such as alignment and orientation cosines - in the plane spanned by the permanent and induced dipole interaction parameters. We find that the loci of the intersections of the surfaces can be traced analytically and that the eigenstates as well as the number of their intersections can be characterized by a single integer index. The value of the index, distinctive for a particular ratio of the interaction parameters, brings out a close kinship with the eigenproperties obtained previously for a class of Stark states via the apparatus of supersymmetric quantum mechanics.

  6. Tenure/Permanent Status Timeline UF's academic year is August 16 to August 15 for IFAS 12-month faculty.

    E-Print Network [OSTI]

    Jawitz, James W.

    , the first academic year begins August 16 of the following calendar year. The tenure/permanent status Third-Year packet is submitted to IFAS Human Resources in the summer of the third academic year. The tenure TO YEAR T/PS SUBMIT SUBMIT GRANTED THIRD-YEAR T/PS PACKET (JULY) (SUMMER) (FALL) 11/08/06 TO 11/07/07 2010

  7. Tenure/Permanent Status Timeline UF's academic year is August 16 to August 15 for IFAS 12-month faculty.

    E-Print Network [OSTI]

    Watson, Craig A.

    , the first academic year begins August 16 of the following calendar year. The tenure/permanent status Third-Year packet is submitted to IFAS Human Resources in the summer of the third academic year. The tenure TO YEAR T/PS SUBMIT SUBMIT GRANTED THIRD-YEAR T/PS PACKET (JULY) (SUMMER) (FALL) 11/08/05 TO 11/07/06 2009

  8. Processing and Protection of Rare Earth Permanent Magnet Particulate for Bonded Magnet Applications

    SciTech Connect (OSTI)

    Peter Kelly Sokolowski

    2007-12-01

    Rapid solidification of novel mixed rare earth-iron-boron, MRE{sub 2}Fe{sub 14}B (MRE = Nd, Y, Dy; currently), magnet alloys via high pressure gas atomization (HPGA) have produced similar properties and structures as closely related alloys produced by melt spinning (MS) at low wheel speeds. Recent additions of titanium carbide and zirconium to the permanent magnet (PM) alloy design in HPGA powder (using He atomization gas) have made it possible to achieve highly refined microstructures with magnetic properties approaching melt spun particulate at cooling rates of 10{sup 5}-10{sup 6}K/s. By producing HPGA powders with the desirable qualities of melt spun ribbon, the need for crushing ribbon was eliminated in bonded magnet fabrication. The spherical geometry of HPGA powders is more ideal for processing of bonded permanent magnets since higher loading fractions can be obtained during compression and injection molding. This increased volume loading of spherical PM powder can be predicted to yield a higher maximum energy product (BH){sub max} for bonded magnets in high performance applications. Passivation of RE-containing powder is warranted for the large-scale manufacturing of bonded magnets in applications with increased temperature and exposure to humidity. Irreversible magnetic losses due to oxidation and corrosion of particulates is a known drawback of RE-Fe-B based alloys during further processing, e.g. injection molding, as well as during use as a bonded magnet. To counteract these effects, a modified gas atomization chamber allowed for a novel approach to in situ passivation of solidified particle surfaces through injection of a reactive gas, nitrogen trifluoride (NF{sub 3}). The ability to control surface chemistry during atomization processing of fine spherical RE-Fe-B powders produced advantages over current processing methodologies. In particular, the capability to coat particles while 'in flight' may eliminate the need for post atomization treatment, otherwise a necessary step for oxidation and corrosion resistance. Stability of these thin films was attributed to the reduction of each RE's respective oxide during processing; recognizing that fluoride compounds exhibit a slightly higher (negative) free energy driving force for formation. Formation of RE-type fluorides on the surface was evidenced through x-ray photoelectron spectroscopy (XPS). Concurrent research with auger electron spectroscopy has been attempted to accurately quantify the depth of fluoride formation in order to grasp the extent of fluorination reactions with spherical and flake particulate. Gas fusion analysis on coated powders (dia. <45 {micro}m) from an optimized experiment indicated an as-atomized oxygen concentration of 343ppm, where typical, nonpassivated RE atomized alloys exhibit an average of 1800ppm oxygen. Thermogravimetric analysis (TGA) on the same powder revealed a decreased rate of oxidation at elevated temperatures up to 300 C, compared to similar uncoated powder.

  9. High-Energy Permanent Magnets for Hybrid Vehicles and Alternative Energy Uses

    SciTech Connect (OSTI)

    Hadjipanayis, George C. [University of Delaware] [University of Delaware; McCallum, William R. [Ames Laboratory] [Ames Laboratory; Sellmyer, David J. [University of Nebraska, Lincoln] [University of Nebraska, Lincoln; Harris, Vincent [Northeastern University] [Northeastern University; Carpenter, Everett E. [Virginia Commonwealth University] [Virginia Commonwealth University; Liu, Jinfang [Electron Energy Corporation] [Electron Energy Corporation

    2013-12-17

    The report summarizes research undertaken by a multidisciplinary team aimed at the development of the next generation high-energy permanent magnets. The principal approach was relied on bottom-up fabrication of anisotropic nanocomposite magnets. Our efforts resulted in further development of the theoretical concept and fabrication principles for the nanocomposites and in synthesis of a range of rare-earth-based hard magnetic nanoparticles. Even though we did not make a breakthrough in the assembly of these hard magnetic particles with separately prepared Fe(Co) nanoparticles and did not obtain a compact nanocomposite magnet, our performed research will help to direct the future efforts, in particular, towards nano-assembly via coating, when the two phases which made the nanocomposite are first organized in core-shell-structured particles. Two other approaches were to synthesize (discover) new materials for the traditional singe-material magnets and the nanocomposite magnets. Integrated theoretical and experimental efforts lead to a significant advance in nanocluster synthesis technique and yielded novel rare-earth-free nanostructured and nanocomposite materials. Examination of fifteen R-Fe-X alloy systems (R = rare earth), which have not been explored earlier due to various synthesis difficulties reveal several new ferromagnetic compounds. The research has made major progress in bottom-up manufacturing of rare-earth-containing nanocomposite magnets with superior energy density and open new directions in development of higher-energy-density magnets that do not contain rare earths. The advance in the scientific knowledge and technology made in the course of the project has been reported in 50 peer-reviewed journal articles and numerous presentations at scientific meetings.

  10. Vacuum Potentials for the Two Only Permanent Free Particles, Proton and Electron. Pair Productions

    E-Print Network [OSTI]

    J. X. Zheng-Johansson

    2015-02-26

    The two only species of isolatable, smallest, or unit charges +e and -e present in nature interact with the universal vacuum in a polarisable dielectric representation through two uniquely defined vacuum potential functions. All of the non-composite subatomic particles containing one-unit charges, +e or -e, are therefore formed in terms of the IED model of the respective charges, of zero rest masses, oscillating in either of the two unique vacuum potential fields, together with the radiation waves of their own charges. In this paper we give a first principles treatment of the dynamics of charge in a dielectric vacuum, based on which, combined with solutions for the radiation waves obtained previously, we subsequently derive the vacuum potential function for a given charge q, which we show to be quadratic and consist each of quantised potential levels, giving therefore rise to quantised characteristic oscillation frequencies of the charge and accordingly quantised, sharply-defined masses of the IED particles. By further combining with relevant experimental properties as input information, we determine the IED particles built from the charges +e,-e at their first excited states in the respective vacuum potential wells to be the proton and the electron, the observationally two only stable (permanently lived) and "free" particles containing one-unit charges. Their antiparticles as produced in pair productions can be accordingly determined. The characteristics of all of the other more energetic non-composite subatomic particles can also be recognised. We finally discuss the energy condition for pair production, which requires two successive energy supplies to (1) first disintegrate the bound pair of vaculeon charges +e,-e composing a vacuuon of the vacuum and (2) impart masses to the disintegrated charges.

  11. Hanford Permanent Isolation Barrier Program: Asphalt technology data and status report - FY 1994

    SciTech Connect (OSTI)

    Freeman, H.D.; Romine, R.A.; Zacher, A.H.

    1994-09-01

    The asphalt layer within the Hanford Permanent Isolation Barrier (HPIB) is an important component of the overall design. This layer provides a RCRA equivalent backup to the overlying earthen layers in the unlikely event that these layers are not able to reduce the infiltration rate to less than 0.05 cm/yr. There is only limited amount of information on using asphalt for a moisture infiltration barrier over the long times required by the HPIB. Therefore, a number of activities are under way, as part of the Barrier Development Program, to obtain data on the performance of asphalt as a moisture barrier in a buried environment over a 1000-year period. These activities include (1) determining RCRA equivalency, (2) measurement of physical properties, (3) measurement of aging characteristics, and (4) relationship to ancient asphalt analogs. During FY 1994 progress was made on all of these activities. Studies were conducted both in the laboratory and on the prototype barrier constructed over the 216-B-57 crib in the 200 East Area on the Hanford Site. This report presents results obtained from the asphalt technology tasks during FY 1994. Also included are updates to planned activities for asphalt analogs and monitoring the asphalt test pad near the prototype barrier. Measurements of hydraulic conductivity on the HMAC portion of the prototype barrier show that the asphalt layers easily meet the RCRA standard of 1 {times} 10{sup -7} cm/s. In-place measurements using a new field falling head technique show an average of 3.66 {times} 10{sup -8} cm/s, while cores taken from the north end of the prototype and measured in a laboratory setup averaged 1.29 {times} 10{sup -9} cm/s. Measurements made on the fluid applied asphalt membrane (polymer-modified asphalt) show an extremely low permeability of less than 1 {times} 10{sup -11} cm/s.

  12. Charge trapping and de-trapping in isolated CdSe/ZnS nanocrystals under an external electric field: Indirect evidence for a permanent dipole moment

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

    Zang, Huidong; Cristea, Mihail; Shen, Xuan; Liu, Mingzhao; Camino, Fernando; Cotlet, Mircea

    2015-08-05

    Single nanoparticle studies of charge trapping and de-trapping in core/shell CdSe/ZnS nanocrystals incorporated into an insulating matrix and subjected to an external electric field demonstrate the ability to reversibly modulate the exciton dynamics and photoluminescence blinking while providing indirect evidence for the existence of a permanent ground state dipole moment in such nanocrystals. A model assuming the presence of energetically deep charge traps physically aligned along the direction of the permanent dipole is proposed in order to explain the dynamics of nanocrystal blinking in the presence of a permanent dipole moment.

  13. RESULTS FROM THE (1) DATA COLLECTION WORKSHOP, (2) MODELING WORKSHOP AND (3) DRILLING AND CORING METHODS WORKSHOP AS PART OF THE JOINT INDUSTRY PARTICIPATION (JIP) PROJECT TO CHARACTERIZE NATURAL GAS HYDRATES IN THE DEEPWATER GULF OF MEXICO

    SciTech Connect (OSTI)

    Stephen A. Holditch; Emrys Jones

    2002-09-01

    In 2000, Chevron began a project to learn how to characterize the natural gas hydrate deposits in the deepwater portions of the Gulf of Mexico. A Joint Industry Participation (JIP) group was formed in 2001, and a project partially funded by the U.S. Department of Energy (DOE) began in October 2001. The primary objective of this project is to develop technology and data to assist in the characterization of naturally occurring gas hydrates in the deepwater Gulf of Mexico. These naturally occurring gas hydrates can cause problems relating to drilling and production of oil and gas, as well as building and operating pipelines. Other objectives of this project are to better understand how natural gas hydrates can affect seafloor stability, to gather data that can be used to study climate change, and to determine how the results of this project can be used to assess if and how gas hydrates act as a trapping mechanism for shallow oil or gas reservoirs. As part of the project, three workshops were held. The first was a data collection workshop, held in Houston during March 14-15, 2002. The purpose of this workshop was to find out what data exist on gas hydrates and to begin making that data available to the JIP. The second and third workshop, on Geoscience and Reservoir Modeling, and Drilling and Coring Methods, respectively, were held simultaneously in Houston during May 9-10, 2002. The Modeling Workshop was conducted to find out what data the various engineers, scientists and geoscientists want the JIP to collect in both the field and the laboratory. The Drilling and Coring workshop was to begin making plans on how we can collect the data required by the project's principal investigators.

  14. ULTRA-DEEPWATER ADVISORY COMMITTEE

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

    and risk analysis from a human perspective. Training methods such as those used in nuclear submarine and nuclear materials handling in the USN and DOE National labs might be...

  15. ULTRA-DEEPWATER ADVISORY COMMITTEE

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-Sessions | Department of Correctiveof Deliverables UDAC Meeting

  16. Deepwater Wind | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi: EnergyS A Industrias de

  17. Radial-Gap Permanent Magnet Motor and Drive Research FY 2004

    SciTech Connect (OSTI)

    McKeever, J.W.

    2005-02-11

    The objective of this task was to study permanent magnet (PM) radial-gap traction drive systems that could meet the U.S. Department of Energy FreedomCAR Program's 2010 goals to expose weaknesses or identify strengths. Initially, the approach was to compare attributes such as physical deformations during operation, performance (torque, power, efficiency versus speed), material requirements (strength), material costs, manufacturability, weight, power density, specific power, reliability, and drivability for specific motors. Three motors selected were the commercially available 60-kW radial-gap surface-mounted PM motor manufactured by UQM Technologies, Inc.; a hypothetical PM motor with rotor-supported magnets similar to the Honda MCF-21; and Delphi's automotive electric machine drive motor, whose rotor is a ferromagnetic cylinder, held at one end by a shaft that supports the magnets on its inner surface. Potential problems have appeared related to PM motors, such as (1) high no-load spin losses and high operational power losses, probably from eddy current losses in the rotor; (2) the undemonstrated dual mode inverter control (DMIC) for driving a brushless dc motor (BDCM) (UQM and Delphi motors); (3) uncertainty about the potential for reducing current with DMIC; and (4) uncertainty about the relation between material requirements and maximum rotor speed. Therefore, the approach was changed to study in detail three of the comparison attributes: drivability, performance, and material requirements. Drivability and related problems were examined by demonstrating that DMIC may be used to drive an 18-pole 30-kW PM motor to 6000 rpm, where the maximum electrical frequency is 900 Hz. An available axial-gap test motor with 18 poles was used because its control is identical to that of a radial gap PM motor. Performance was analytically examined, which led to a derivation showing that DMIC controls a PM motor so that the motor uses minimum current to produce any power regardless of speed for relative speeds, n = {omega}/{omega}{sub base} {ge} 2. Performance was also examined with efficiency measurements during the 30-kW PM motor test. Material requirements were examined with finite-element analyses (FEA) to determine the speed and location where yield starts and the corresponding deformations and stresses.

  18. Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Concentrated Windings

    SciTech Connect (OSTI)

    Lawler, J.S.

    2005-12-21

    It is well known that the ability of the permanent magnet synchronous machine (PMSM) to operate over a wide constant power speed range (CPSR) is dependent upon the machine inductance [1,2,3,4,5]. Early approaches for extending CPSR operation included adding supplementary inductance in series with the motor [1] and the use of anti-parallel thyristor pairs in series with the motor-phase windings [5]. The increased inductance method is compatible with a voltage-source inverter (VSI) controlled by pulse-width modulation (PWM) which is called the conventional phase advance (CPA) method. The thyristor method has been called the dual mode inverter control (DMIC). Neither of these techniques has met with wide acceptance since they both add cost to the drive system and have not been shown to have an attractive cost/benefit ratio. Recently a method has been developed to use fractional-slot concentrated windings to significantly increase the machine inductance [6]. This latest approach has the potential to make the PMSM compatible with CPA without supplemental external inductance. If the performance of such drive is acceptable, then the method may make the PMSM an attractive option for traction applications requiring a wide CPSR. A 30 pole, 6 kW, 6000 maximum revolutions per minute (rpm) prototype of the fractional-slot PMSM design has been developed [7]. This machine has significantly more inductance than is typical of regular PMSMs. The prototype is to be delivered in late 2005 to the Oak Ridge National Laboratory (ORNL) for testing and development of a suitable controller. In advance of the test/control development effort, ORNL has used the PMSM models developed over a number of previous studies to study the steady-state performance of high-inductance PMSM machines with a view towards control issues. The detailed steady-state model developed includes all motor and inverter-loss mechanisms and will be useful in assessing the performance of the dynamic controller to be developed in future work. This report documents the results of this preliminary investigation.

  19. Environmentally Benign and Permanent Modifications to Prevent Biofouling on Marine and Hydrokinetic Devices

    SciTech Connect (OSTI)

    Zheng Zhang

    2012-04-19

    Semprus Biosciences is developing environmentally benign and permanent modifications to prevent biofouling on Marine and Hydrokinetic (MHK) devices. Biofouling, including growth on external surfaces by bacteria, algae, barnacles, mussels, and other marine organisms, accumulate quickly on MHK devices, causing mechanical wear and changes in performance. Biofouling on crucial components of hydrokinetic devices, such as rotors, generators, and turbines, imposes substantial mass and hydrodynamic loading with associated efficiency loss and maintenance costs. Most antifouling coatings leach toxic ingredients, such as copper and tributyltin, through an eroding process, but increasingly stringent regulation of biocides has led to interest in the development of non-biocidal technologies to control fouling. Semprus Biosciences research team is developing modifications to prevent fouling from a broad spectrum of organisms on devices of all shapes, sizes, and materials for the life of the product. The research team designed and developed betaine-based polymers as novel underwater coatings to resist the attachment of marine organisms. Different betaine-based monomers and polymers were synthesized and incorporated within various coating formulations. The formulations and application methods were developed on aluminum panels with required adhesion strength and mechanical properties. The coating polymers were chemically stable under UV, hydrolytic and oxidative environments. The sulfobetaine formulations are applicable as nonleaching and stable underwater coatings. For the first time, coating formulations modified with highly packed sulfobetaine polymers were prepared and demonstrated resistance to a broad spectrum of marine organisms. Assays for comparing nonfouling performance were developed to evaluate protein adsorption and bacteria attachment. Barnacle settlement and removal were evaluated and a 60-day field test was performed. Silicone substrates including a commercial fouling release coating were used for comparison. Compared with the unmodified silicone substrates, the sulfobetaine-modified formulations were able to exhibit a 98% reduction in fibrinogen adsorption, 97.0% (E. coli), 99.6% (S. aureus), and 99.5% (C. lytica) reduction in bacteria attachment, and 100% reduction in barnacles cyprid attachment. In addition to the significant improvement in fouling resistance of various organisms, the 60-day field test also showed an evident efficacy from visual assessment, foul rating, and fouling removal test. The research confirmed that the novel antifouling mechanism of betaine polymers provides a new avenue for marine coating development. The developed coatings out-performed currently used nontoxic underwater coatings in a broad spectrum of fouling resistance. By further developing formulations and processing methods for specific devices, the technology is ready for the next stage of development with demonstration in MHK systems.

  20. Spectra of In-like Tungsten, $W^{25+}$, from the Shanghai permanent magnet electron beam ion trap

    E-Print Network [OSTI]

    Li, W; Shi, Z; Fei, Z; R,; Zhao,; Brage, T; Huldt, S; Hutton, R; Zou, Y

    2015-01-01

    Three visible lines of M1 transitions from In-like W were recorded using the Shanghai permanent magnet electron beam ion trap. The experimental wavelengths were measured as 493.84 $\\pm$ 0.15, 226.97 $\\pm$ 0.13 and 587.63 $\\pm$ 0.23 nm (vacuum wavelengths). These results are in good agreement with theoretical predictions obtained using large-scale Relativistic Many-Body Perturbation Theory, in the form of the Flexible Atomic Code, and some explorations with the Muliconfiguration Dirac-Hartree-Fock code GRASP2K.

  1. Investigation of coercivity mechanism in hot deformed Nd-Fe-B permanent magnets by small-angle neutron scattering

    SciTech Connect (OSTI)

    Yano, M., E-mail: masao-yano-aa@mail.toyota.co.jp; Manabe, A.; Shoji, T.; Kato, A. [Advanced Material Engineering Division, Toyota Motor Corporation, Susono 410-1193 (Japan); Ono, K. [High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801 (Japan); Harada, M. [Toyota Central R and D Labs, Inc., Aichi 480-1192 (Japan); Kohlbrecher, J. [Laboratory for Neutron Scattering, Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)

    2014-05-07

    The magnetic reversal behaviors of single domain sized Nd-Fe-B permanent magnets, with and without isolation between the Nd{sub 2}Fe{sub 14}B grains, was clarified using small-angle neutron scattering (SANS). The SANS patterns obtained arose from changes in the magnetic domains and were analyzed using the Teubner–Stray model, a phenomenological correlation length model, to quantify the periodicity and morphology of the magnetic domains. The results indicated that the magnetic reversal evolved with the magnetic domains that had similar sized grains. The grain isolation enabled us to realize the reversals of single domains.

  2. Investigation of Heat Transfer at the Mold/Metal Interface in Permanent Mold Casting of Light Alloys

    SciTech Connect (OSTI)

    Robert D. Pehlke; John T. Berry

    2005-12-16

    Accurate modeling of the metal casting process prior to creating a mold design demands reliable knowledge of the interfacial heat transfer coefficient at the mold metal interface as a function of both time and location. The phenomena concerned with the gap forming between the mold and the solidifying metal are complex but need to be understood before any modeling is attempted. The presence of mold coatings further complicates the situation. A commercial casting was chosen and studied in a gravity permanent mold casting process. The metal/mold interfacial heat transfer coefficient (IHTC) was the focus of the research. A simple, direct method has been used to evaluate the IHTC. Both the simulation and experiments have shown that a reasonably good estimate of the heat transfer coefficient could be made in the case studied. It has been found that there is a good agreement between experiments and simulations in the temperature profiles during the solidification process, given that the primary mechanism of heat transfer across the gap in permanent mold casting of light alloys is by conduction across the gap. The procedure utilized to determine the interfacial heat transfer coefficient can be applied to other casting processes. A recently completed project involving The University of Michigan and Mississippi State University, together with several industrial partners, which was supported by the USDOE through the Cast Metals Coalition, examined a number of cases of thermal contact. In an investigation which gave special consideration to the techniques of measurement, several mold coatings were employed and results presented as a function of time. Realistic conditions of coating thickness and type together with an appropriate combination of mold preheat and metal pouring temperature were strictly maintained throughout the investigation. Temperature sensors, in particular thermocouples, play an important part in validating the predictions of solidification models. Cooling curve information, as well as temperature gradient history both in the solidifying metal and within the mold are invariably required to be validated. This validation depends upon the response of the sensor concerned, but also on its own effect upon the thermal environment. A joint university/industry team has completed an investigation of the invasive effects of thermocouples upon temperature history in permanent molds determining the degree of uncertainty associated with placement and indicating how the time-temperature history may be recovered. In addition to its relevance to the all important study of thermal contact of the casting with metallic molds, the observations also impact the determination of heat flux and interfacial heat transfer coefficients. In these respects the study represents the first of its kind that has tackled the problem in depth for permanent mold castings. An important ramification of this investigation has been the errors likely to be encountered in mold temperature measurement with thin section aluminum castings, especially with respect to the plans for thermocouple placement. A comparison between the degree of uncertainty experienced in sand molds compared with that found in permanent molds reveals that the associated problems have a lesser impact. These conclusions and the related recommendations have been disseminated to industry and the technical community through project reports and publications.

  3. Combining Multicomponent Seismic Attributes, New Rock Physics Models, and In Situ Data to Estimate Gas-Hydrate Concentrations in Deep-Water, Near-Seafloor Strata of the Gulf of Mexico

    SciTech Connect (OSTI)

    Bureau of Economic Geology

    2009-04-30

    The Bureau of Economic Geology was contracted to develop technologies that demonstrate the value of multicomponent seismic technology for evaluating deep-water hydrates across the Green Canyon area of the Gulf of Mexico. This report describes the methodologies that were developed to create compressional (P-P) and converted-shear (P-SV) images of near-seafloor geology from four-component ocean-bottom-cable (4C OBC) seismic data and the procedures used to integrate P-P and P-SV seismic attributes with borehole calibration data to estimate hydrate concentration across two study areas spanning 16 and 25 lease blocks (or 144 and 225 square miles), respectively. Approximately 200 km of two-dimensional 4C OBC profiles were processed and analyzed over the course of the 3-year project. The strategies we developed to image near-seafloor geology with 4C OBC data are unique, and the paper describing our methodology was peer-recognized with a Best Paper Award by the Society of Exploration Geophysicists in the first year of the project (2006). Among the valuable research findings demonstrated in this report, the demonstrated ability to image deep-water near-seafloor geology with sub-meter resolution using a standard-frequency (10-200 Hz) air gun array on the sea surface and 4C sensors on the seafloor has been the accomplishment that has received the most accolades from professional peers. Our study found that hydrate is pervasive across the two study areas that were analyzed but exists at low concentrations. Although our joint inversion technique showed that in some limited areas, and in some geologic units across those small areas, hydrates occupied up to 40-percent of the sediment pore space, we found that when hydrate was present, hydrate concentration tended to occupy only 10-percent to 20-percent of the pore volume. We also found that hydrate concentration tended to be greater near the base of the hydrate stability zone than it was within the central part of the stability zone.

  4. LUBBOCK, TX (KCBD) -WE RECOMMEND

    E-Print Network [OSTI]

    Rock, Chris

    McBride Killed Seeking Help After Accident (Essence) Will the oil & gas boom reach Lubbock? Posted Midland's economy has seen big benefits from their oil and gas boom. Could the same thing happen in Lubbock? On Friday, the Lubbock Economic Development Alliance hosted a luncheon exploring

  5. ~txF74.ptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematics And Statistics » USAJobsMotion toCoal_Budget_Fact_Sheet.pdf More Documents &ER-B-00-03 + +

  6. ~tx22C0.ptx

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LIST OFAMERICA'S FUTURE.EnergyWoodenDate Rec TypeFutureGen_Fact_Sheet.pdf-234-4433

  7. US WSC TX Site Consumption

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming963 1.969 1.979Coal Consumers inYear JanSales Type: Sales120NE MASoAtlWSC

  8. Power-Factor Calculation under Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation

    SciTech Connect (OSTI)

    Lee, Seong T [ORNL; Burress, Timothy A [ORNL; Hsu, John S [ORNL

    2009-01-01

    This paper introduces a new method for calculating the power factor with consideration of the cross saturation between the direct-axis (d-axis) and the quadrature-axis (q-axis) of an interior permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include the cross-saturation effect by adding the cross-coupled inductance terms. This paper also contains the new method of calculating the cross-coupled inductance values as well as self-inductance values in d- and q-axes. The analyzed motor is a high-speed brushless field excitation machine that offers high torque per ampere per core length at low speed and weakened flux at high speed, which was developed for the traction motor of a hybrid electric vehicle.

  9. Study of the Advantages of Internal Permanent Magnet Drive Motor with Selectable Windings for Hybrid-Electric Vehicles

    SciTech Connect (OSTI)

    Otaduy, P.J.; Hsu, J.S.; Adams, D.J.

    2007-11-30

    This report describes research performed on the viability of changing the effectively active number of turns in the stator windings of an internal permanent magnet (IPM) electric motor to strengthen or weaken the magnetic fields in order to optimize the motor's performance at specific operating speeds and loads. Analytical and simulation studies have been complemented with research on switching mechanisms to accomplish the task. The simulation studies conducted examine the power and energy demands on a vehicle following a series of standard driving cycles and the impact on the efficiency and battery size of an electrically propelled vehicle when it uses an IPM motor with turn-switching capabilities. Both full driving cycle electric propulsion and propulsion limited starting from zero to a set speed have been investigated.

  10. In: Proceedings of the 88th Annual Meeting (held June 18-23 in San Antonio, TX), Air and Waste Management Association, Pittsburgh, Pennsylvania, June 1995, Paper No. 95-TA42.02, 1995 H.C. Frey and A.C. Cullen

    E-Print Network [OSTI]

    Frey, H. Christopher

    Meeting Air & Waste Management Association Pittsburgh, PA Presented at: 88th Annual Meeting of the Air & Waste Management Association San Antonio, Texas June 18-23, 1995 #12;2 INTRODUCTION Virtually allIn: Proceedings of the 88th Annual Meeting (held June 18-23 in San Antonio, TX), Air and Waste

  11. Permanent Mold Casting of JIS-AC4C Aluminum Alloy Using a Low-Temperature Mold

    SciTech Connect (OSTI)

    Yamagata, Hiroshi; Nikawa, Makoto

    2011-01-17

    Permanent mold casting using mold temperatures below 200 deg. C was conducted to obtain a high-strength, thin-walled casting. Al-7.36 mass% Si -0.18 Cu- 0.27Mg-0.34Fe alloy JIS-AC4C was cast using a bottom pouring cast plan. The product had a rectangular tube shape (70 mm W x 68 mm D x 180 mm H) with wall thicknesses of 1, 3 and 5 mm. The effect of heat insulation at the melt path was compared when using a sand runner insert and when using a steel runner insert as well as a powder mold release agent. Fine microstructures were observed in the casting. The smaller the thickness, the higher the hardness with smaller secondary dendrite arm spacing (SDAS). However, the hardness and the SDAS were unaffected by the mold temperature. It was proposed that the avoidance of the formation of primary {alpha} dendrite at the melt path generates a higher strength casting with adequate mold filling.

  12. The influence of microstructure on magnetic properties of nanocrystalline Fe-Pt-Nb-B permanent magnet ribbons

    SciTech Connect (OSTI)

    Randrianantoandro, N.; Greneche, J. M.; Crisan, A. D.; Crisan, O.; Marcin, J.; Kovac, J.; Hanko, J.; Skorvanek, I.; Svec, P.; Chrobak, A.

    2010-11-15

    A FePt-based hard-magnetic nanocomposite of exchange spring type was prepared by isothermal annealing of melt-spun Fe{sub 52}Pt{sub 28}Nb{sub 2}B{sub 18} (atomic percent) ribbons. The relationship between microstructure and magnetic properties was investigated by qualitative and quantitative structural analysis based on the x-ray diffraction, transmission electron microscopy, and {sup 57}Fe Moessbauer spectrometry on one hand and the superconducting quantum interference device magnetometry on the other hand. The microstructure consists of L1{sub 0}-FePt hard-magnetic grains (15-45 nm in diameter) dispersed in a soft magnetic medium composed by A1 FePt, Fe{sub 2}B, and boron-rich (FeB)PtNb remainder phase. The ribbons annealed at 700 deg. C for 1 h exhibit promising hard-magnetic properties at room temperature: M{sub r}/M{sub s}=0.69; H{sub c}=820 kA/m and (BH){sub max}=70 kJ/m{sup 3}. Strong exchange coupling between hard and soft magnetic phases was demonstrated by a smooth demagnetizing curve and positive {delta}M-peak in the Henkel plot. The magnetic properties measured from 5 to 750 K reveals that the hard characteristics remains rather stable up to 550 K, indicating a good prospect for the use of these permanent magnets in a wide temperature range.

  13. On-the-fly machine-learning for high-throughput experiments: search for rare-earth-free permanent magnets

    SciTech Connect (OSTI)

    Kusne, AG; Gao, TR; Mehta, A; Ke, LQ; Nguyen, MC; Ho, KM; Antropov, V; Wang, CZ; Kramer, MJ; Long, C; Takeuchi, I

    2014-09-15

    Advanced materials characterization techniques with ever-growing data acquisition speed and storage capabilities represent a challenge in modern materials science, and new procedures to quickly assess and analyze the data are needed. Machine learning approaches are effective in reducing the complexity of data and rapidly homing in on the underlying trend in multi-dimensional data. Here, we show that by employing an algorithm called the mean shift theory to a large amount of diffraction data in high-throughput experimentation, one can streamline the process of delineating the structural evolution across compositional variations mapped on combinatorial libraries with minimal computational cost. Data collected at a synchrotron beamline are analyzed on the fly, and by integrating experimental data with the inorganic crystal structure database (ICSD), we can substantially enhance the accuracy in classifying the structural phases across ternary phase spaces. We have used this approach to identify a novel magnetic phase with enhanced magnetic anisotropy which is a candidate for rare-earth free permanent magnet.

  14. Contol of Surface Mounted Permanent Magnet Motors with Special Application to Motors with Fractional-Slot Concentrated Windings

    SciTech Connect (OSTI)

    Patil, N.; Lawler, J.S.; McKeever, J.

    2007-07-31

    A 30-pole, 6-kW prototype of a fractional-slot permanent magnet synchronous motor (PMSM) design has been developed to operate at a maximum speed of 6000 rpm [1,2]. This machine has significantly more inductance than regular PMSMs with distributed windings. The prototype was delivered in April 2006 to the Oak Ridge National Laboratory (ORNL) for testing and development of a suitable controller. To prepare for this test/control development effort, ORNL used PMSM models developed over a number of previous studies to preview the control issues that arise when a dynamic controller drives a high inductance PMSM machine during steady state performance evaluations. The detailed steady state model developed includes all motor and inverter loss mechanisms and was useful for assessing the performance of the dynamic controller before it was put into operation. This report documents the results of tests demonstrating the effectiveness of ORNL's simple low-cost control scheme during characterization of the fractional-slot concentrated windings (FSCW) PMSM motor. The control scheme is simple because only the supply voltage magnitude and the phase angle between the back-electromotive force (emf) and the supply voltage is controlled. It is low-cost because it requires no current or phase voltage sensors.

  15. CX-010478: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9, A11 Date: 05/31/2013 Location(s): Texas Offices(s): National Energy Technology Laboratory

  16. CX-010477: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9, A11 Date: 05/31/2013 Location(s): Texas Offices(s): National Energy Technology Laboratory

  17. CX-010789: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9 Date: 08/14/2013 Location(s): Texas Offices(s): National Energy Technology Laboratory

  18. CX-010476: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9, A11 Date: 05/31/2013 Location(s): Texas Offices(s): National Energy Technology Laboratory

  19. CX-010475: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9, A11 Date: 05/31/2013 Location(s): Texas Offices(s): National Energy Technology Laboratory

  20. CX-011030: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9, A11, B3.6 Date: 09/10/2013 Location(s): Ohio Offices(s): National Energy Technology Laboratory

  1. CX-011031: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9, A11 Date: 09/10/2013 Location(s): Other Location Offices(s): National Energy Technology Laboratory

  2. Studies on the effect of the axial magnetic field on the x-ray bremsstrahlung in a 2.45 GHz permanent magnet microwave ion source

    SciTech Connect (OSTI)

    Kumar, Narender; Rodrigues, G., E-mail: gerosro@gmail.com; Lakshmy, P. S.; Mathur, Y.; Ahuja, R.; Kanjilal, D. [Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi (India)] [Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi (India); Baskaran, R. [Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu (India)] [Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu (India)

    2014-02-15

    A compact microwave ion source has been designed and developed for operation at a frequency of 2.45 GHz. The axial magnetic field is based on two permanent magnet rings, operating in the “off-resonance” mode and is tunable by moving the permanent magnets. In order to understand the electron energy distribution function, x-ray bremsstrahlung has been measured in the axial direction. Simulation studies on the x-ray bremsstrahlung have been carried out to compare with the experimental results. The effect of the axial magnetic field with respect to the microwave launching position and the position of the extraction electrode on the x-ray bremsstrahlung have been studied.

  3. American Society for Radiation Oncology (ASTRO) and American College of Radiology (ACR) Practice Guideline for the Transperineal Permanent Brachytherapy of Prostate Cancer

    SciTech Connect (OSTI)

    Rosenthal, Seth A., E-mail: rosenthals@radiological.co [Radiation Oncology Centers, Radiological Associates of Sacramento, Sacramento, CA (United States); Bittner, Nathan H.J. [Tacoma/Valley Radiation Oncology Centers, Tacoma, WA (United States); Beyer, David C. [Arizona Oncology Services, Scottsdale, AZ (United States); Demanes, D. Jeffrey [Department of Radiation Oncology, University of California, Los Angeles, CA (United States); Goldsmith, Brian J. [Radiation Oncology Centers, Radiological Associates of Sacramento, Sacramento, CA (United States); Horwitz, Eric M. [Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA (United States); Ibbott, Geoffrey S. [Radiological Physics Center, MD Anderson Cancer Center, Houston, TX (United States); Lee, W. Robert [Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States); Nag, Subir [Department of Radiation Oncology, Kaiser Permanante, Santa Clara, CA (United States); Suh, W. Warren [Department of Radiation Oncology, Cancer Center of Santa Barbara, Santa Barbara, CA (United States); Potters, Louis [Department of Radiation Oncology, Long Island Jewish Medical Center, New Hyde Park, NY (United States)

    2011-02-01

    Transperineal permanent prostate brachytherapy is a safe and efficacious treatment option for patients with organ-confined prostate cancer. Careful adherence to established brachytherapy standards has been shown to improve the likelihood of procedural success and reduce the incidence of treatment-related morbidity. A collaborative effort of the American College of Radiology (ACR) and American Society for Therapeutic Radiation Oncology (ASTRO) has produced a practice guideline for permanent prostate brachytherapy. The guideline defines the qualifications and responsibilities of all the involved personnel, including the radiation oncologist, physicist and dosimetrist. Factors with respect to patient selection and appropriate use of supplemental treatment modalities such as external beam radiation and androgen suppression therapy are discussed. Logistics with respect to the brachtherapy implant procedure, the importance of dosimetric parameters, and attention to radiation safety procedures and documentation are presented. Adherence to these practice guidelines can be part of ensuring quality and safety in a successful prostate brachytherapy program.

  4. Long-Term Climate Change Assessment Task for the Hanford Site Permanent Isolation Barrier Development Program: Status through FY 1992

    SciTech Connect (OSTI)

    Petersen, K.L.; Chatters, J.C.

    1993-07-01

    The Hanford Site Permanent Isolation Barrier Development Program (Barrier Development Program) was organized (Adams and Wing 1986) to develop the technology needed to provide an in-place disposal capability for the US Department of Energy at the Hanford Site in southeastern Washington. The goals of the Barrier Development Program are to provide defensible evidence that final barrier design(s) will adequately control water infiltration, plant and animal intrusion, and wind and water erosion for a minimum of 1,000 years; to isolate wastes from the accessible environment; and to use markers to warn inadvertent human intruders. Evidence for barrier performance will be obtained by conducting laboratory experiments, field tests, computer modeling, and other studies that establish confidence in the barrier`s ability to meet its 1,000-year design life. The performance and stability of natural barrier analogs that have existed for several millennia and the reconstruction of climate changes during the past 10,000 to 125,000 years also will provide insight into bounding conditions of possible future changes and increase confidence in the barriers design. In the following discussion the term {open_quotes}long-term{close_quotes} references periods of time up to 1000`s of years, distinguishing it from {open_quotes}short-term{close_quotes} weather patterns covering a decade or less. Specific activities focus on planning and conducting a series of studies and tests required to confirm key aspects of the barrier design. The effort is a collaborative one between scientists and engineers from Westinghouse Hanford Company (Westinghouse Hanford) and Pacific Northwest Laboratory (PNL) to design barriers to limit movement of radionuclides and other contaminants to the accessible environment for at least 1,000 years. These activities have been divided into 14 groups of tasks that aid in the complete development of protective barrier and warning marker system.

  5. Indirect sensing for rotor flux position of permanent magnet AC motors operating over a wide speed range

    SciTech Connect (OSTI)

    Moreira, J.C.

    1996-11-01

    This paper describes an indirect sensing, or sensorless, method for rotor flux position for brushless permanent magnet (BPM) motors operating over a wide speed range, while keeping maximum torque per ampere and/or maximum efficiency capabilities. The method described is particularly applicable to trapezoidal back emf type of BPM motors. The typical trapezoidal waveform of the motor internal voltages (or back emf) contains a fundamental and higher order frequency harmonics. In particular, the third harmonic component is extracted from the stator phase voltages while the fundamental and other polyphase components are eliminated via a simple summation of the three phase voltages. The resulting third harmonic signal keeps a constant phase relationship with the rotor flux for any motor speed and load condition, and is practically free of noise that can be introduced by the inverter switching, making this a robust sensing method. In contrast with indirect sensing methods based on detection of the back-emf signal that require heavy filtering, the third harmonic signal needs only a small amount of filtering to eliminate the switching frequency and its side bands. As a result, the method described here is not sensitive to filtering delays, allowing the motor to achieve a good performance over a wide speed range. Motor starting is also superior with this method since the third harmonic signal can be detected and processed at lower speeds than for the conventional method of back-emf sensing. Moreover, an alternative way to acquire the third harmonic signal without the need to access the stator neutral terminal is discussed. This is particularly interesting with the motor neutral connection is not available or expensive to have access. The third harmonic indirect sensing scheme is implemented in the laboratory and compared to a conventional back-emf sensing method.

  6. Permanent Markers Implementation Plan

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeeding access| DepartmentPeer ReviewRadiationAward atOptimizationsensors

  7. 301 Moved Permanently

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory of rare Kaonforsupernovae modelsearch this siteSearch Go! USU.S.

  8. Experimental Approach of a High Performance Control of Two PermanentMagnet Synchronous Machines in an Integrated Drive for Automotive Applications

    SciTech Connect (OSTI)

    Tang, Lixin; Su, Gui-Jia

    2006-01-01

    The close-loop digital signal processor (DSP) control of an integrated-dual inverter, which is able to drive two permanent magnet (PM) motors independently, is presented and evaluated experimentally. By utilizing the neutral point of the main traction motor, only two inverter poles are needed for the two-phase auxiliary motor. The modified field-oriented control scheme for this integrated inverter was introduced and employed in real-time control. The experimental results show the inverter is able to control two drives independently. An integrated, component count reduced drive is achieved.

  9. Shell appraising deepwater discovery off Philippines

    SciTech Connect (OSTI)

    Scherer, M. ); Lambers, E.J.T.; Steffens, G.S. )

    1993-05-10

    Shell International Petroleum Co. Ltd. negotiated a farmout in 1990 from Occidental International Exploration and Production Co. for Block SC-38 in the South China Sea off Palawan, Philippines, following Oxy's discovery of gas in 1989 in a Miocene Nido limestone buildup. Under the terms of the farmout agreement, Shell became operator with a 50% share. Following the disappointing well North Iloc 1, Shell was successful in finding oil and gas in Malampaya 1. Water 700-1,000 m deep, remoteness, and adverse weather conditions have imposed major challenges for offshore operations. The paper describes the tectonic setting; the Nido limestone play; the Malampaya discovery; and Shell's appraisal studies.

  10. Deepwater Horizon Disaster Professor Satish Nagarajaiah

    E-Print Network [OSTI]

    Nagarajaiah, Satish

    and Women Who Serve Our Country And To Those Who Lost Their Lives Doing Their Duty Invited Lecture, ASCE of natural gas. Was upended by Hurricane Rita in 2005, but no leak!! and things worked fine. The platform/day and 220 million CFT of natural gas. Badly damaged in Hurricane Katrina 2005. No leak!! and things worked

  11. Deepwater Internal Wave Study and Application 

    E-Print Network [OSTI]

    Jiang, Lei

    2013-12-10

    conforming to the physics of internal waves and to study the effects on offshore drilling semisubmersibles, different types of offshore hull forms and riser systems, including the large diameter cold water pipe of floating Ocean Thermal Energy Conversion...

  12. Deepwater Oil & Gas Resources | Department of Energy

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

    The United States has significant natural gas and oil reserves. But many of these resources are increasingly harder to locate and bring into production. To help meet this...

  13. Deepwater completion and tieback -- A case study

    SciTech Connect (OSTI)

    Ghiselin, D.

    1996-10-01

    Major operators are engaged in large-scale integrated projects around the world. Does integration favor the big boys, or can a small independent operator benefit from this approach? Independent partners Hardy Oil and Gas USA and Samedan Oil Corp. looked into integrated project management to successfully design and install subsea completions, subsea pipelines, and platform tiebacks and interfaces to two platforms operated by Texaco and Chevron, respectively. The paper describes the project management approach taken and results of the project.

  14. Horizontal subsea trees allow frequent deepwater workovers

    SciTech Connect (OSTI)

    Krenek, M.; Hall, G.; Sheng, W.Z.

    1995-05-01

    Horizontal subsea wellheads have found application in the Liuhua oil field in the South China Sea. These trees allow installation and retrieval of downhole equipment through the tree without having to disturb the tree or its external connections to flow lines, service lines, or control umbilicals. This access to the well is important because the Liuhua wells will be produced with electrical submersible pumps (ESPs), which may have relatively short intervals between maintenance, leading to frequent well work. The wells will be completed subsea in about 300 m of water. The large bore, horizontal trees allow all downhole equipment to be pulled without removal of the subsea tree. This wellhead configuration also provides well control and vertical access to downhole equipment through a conventional marine drilling riser and subsea blowout preventer (BOP), eliminating the need for costly specialized completion risers. Another benefit of the horizontal tree is its extremely compact profile with a low number of valves for well control. Valve size and spacing are decoupled from the size and bore spacing of the tubing hanger. The tree`s low profile geometry reduces costs of manufacturing the tree and framework and optimize load transfer to the wellhead.

  15. ultra_deepwater | netl.doe.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired SolarAboutXu Named|Got Solitons?scriptEnv -MediasupercomputersR I N

  16. Deepwater_Response.pdf | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-in electricLaboratory | version of the1996ofDavidNovember

  17. Deepwater Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation9) WindGridDeepi has not created any blogFarm

  18. Data from Deepwater Horizon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 20153Daniel Boff About Us DanielData Safer than Ever

  19. Texas Automated Buoy System Sustainable Ocean Observations to Help Protect the Environment

    E-Print Network [OSTI]

    Office Austin, TX Abstract-The Deepwater Horizon oil spill off the coast of Louisiana in 2010 woke the country once again to the inherent risks involved in offshore drilling operations. The final overall cost on drilling platforms, tankers and fueling depots which are designed specifically to prevent the accidental

  20. Permanent polarization and charge distribution in organic light-emitting diodes (OLEDs): Insights from near-infrared charge-modulation spectroscopy of an operating OLED

    SciTech Connect (OSTI)

    Marchetti, Alfred P.; Haskins, Terri L.; Young, Ralph H.; Rothberg, Lewis J.

    2014-03-21

    Vapor-deposited Alq{sub 3} layers typically possess a strong permanent electrical polarization, whereas NPB layers do not. (Alq{sub 3} is tris(8-quinolinolato)aluminum(III); NPB is 4,4?-bis[N-(1-naphthyl)-N-phenylamino]biphenyl.) The cause is a net orientation of the Alq{sub 3} molecules with their large dipole moments. Here we report on consequences for an organic light-emitting diode (OLED) with an NPB hole-transport layer and Alq{sub 3} electron-transport layer. The discontinuous polarization at the NPB|Alq{sub 3} interface has the same effect as a sheet of immobile negative charge there. It is more than compensated by a large concentration of injected holes (NPB{sup +}) when the OLED is running. We discuss the implications and consequences for the quantum efficiency and the drive voltage of this OLED and others. We also speculate on possible consequences of permanent polarization in organic photovoltaic devices. The concentration of NPB{sup +} was measured by charge-modulation spectroscopy (CMS) in the near infrared, where the NPB{sup +} has a strong absorption band, supplemented by differential-capacitance and current-voltage measurements. Unlike CMS in the visible, this method avoids complications from modulation of the electroluminescence and electroabsorption.

  1. Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Motors with Concentrated Windings

    SciTech Connect (OSTI)

    McKeever, John W; Patil, Niranjan; Lawler, Jack

    2007-07-01

    A 30 pole, 6 kW, and 6000 maximum revolutions per minute (rpm) prototype of the permanent magnet synchronous motor (PMSM) with fractional-slot concentrated windings (FSCW) has been designed, built, and tested at the University of Wisconsin at Madison (UWM). This machine has significantly more inductance than that of regular PMSMs. The prototype was delivered in April 2006 to the Oak Ridge National Laboratory (ORNL) for testing and development of a controller that will achieve maximum efficiency. In advance of the test/control development effort, ORNL has used the PMSM models developed over a number of previous studies to study how steady state performance of high inductance PMSM machines relates to control issues. This report documents the results of this research. The amount of inductance that enables the motor to achieve infinite constant power speed ratio (CPSR) is given by L{sub {infinity}} = E{sub b}/{Omega}{sub b}I{sub R}, where E{sub b} is the root-mean square (rms) magnitude of the line-to-neutral back-electromotive force (emf) at base speed, {Omega}{sub b} is the base speed in electrical radians per second, and I{sub R} is the rms current rating of the motor windings. The prototype machine that was delivered to ORNL has about 1.5 times as much inductance as a typical PMSM with distributed integral slot windings. The inventors of the FSCW method, who designed the prototype machine, remarked that they were 'too successful' in incorporating inductance into their machine and that steps would be taken to modify the design methodology to reduce the inductance to the optimum value. This study shows a significant advantage of having the higher inductance rather than the optimal value because it enables the motor to develop the required power at lower current thereby reducing motor and inverter losses and improving efficiency. The main problem found with high inductance machines driven by a conventional phase advance (CPA) method is that the motor current at high speed depends solely on machine parameters and is virtually independent of the load level and the direct current (dc) supply voltage. Thus, the motor current is virtually the same at no load as at full load resulting in poor efficiency at less than full load conditions. While an inductance higher than the value cited above is warranted, it still does not ensure that the motor current is proportional to load; consequently, the problem of low efficiency at high speed and partial load is not resolved but is only mitigated. A common definition of 'base speed' is the speed at which the voltage applied to the motor armature is equal to the magnitude of the back-emf. The results in this study indicate that the dc supply voltage should be adequate to drive rated current into the motor winding at the specified base speed. At a minimum this requires sufficient voltage to overcome not only the back-emf but also the voltage drop across the internal impedance of the machine. For a high inductance PMSM, the internal impedance at base speed can be considerable and substantial additional voltage is required to overcome the internal voltage drop. It is further shown that even more voltage than the minimum required for injecting rated current at base speed can be beneficial by allowing the required power to be developed at lower current, which reduces losses in the motor and inverter components. Further, it is shown that the current is minimized at a unique speed; consequently, there may be room for optimization if the drive spends a substantial amount of its operating life at a certain speed (for example 60 mph). In this study, fundamental frequency phasor models are developed for a synchronous PMSM and the control systems that drive them is CPA. The models were compared with detailed simulations to show their validity. The result was used to design a traction drive control system with optimized efficiency to drive the fractional-slot motor with concentrated windings. The goal is to meet or exceed the FreedomCAR inverter cost and performance targets.

  2. High-Performance Control of Two Three-Phase Permanent-Magnet Synchronous Machines in an Integrated Drive for Automotive Applications

    SciTech Connect (OSTI)

    Tang, Lixin [ORNL; Su, Gui-Jia [ORNL

    2008-01-01

    The closed-loop control of an integrated dual AC drive system is presented to control two three-phase permanent-magnet motors. A five-leg inverter is employed in the drive system; three of the inverter legs are for a main traction motor, but only two are needed for a three-phase auxiliary motor by utilizing the neutral point of the traction motor. An integrated drive with reduced component count is therefore achieved by eliminating one inverter leg and its gate drivers. A modified current control scheme based on the rotor flux orientation principle is presented. Simulation and experimental results are included to verify the independent control capability of the integrated drive.

  3. Rare?Earth?Free Permanent Magnets for Electrical Vehicle Motors and Wind Turbine Generators: Hexagonal Symmetry Based Materials Systems Mn?Bi and M?type Hexaferrite

    SciTech Connect (OSTI)

    Hong, Yang-Ki; Haskew, Timothy; Myryasov, Oleg; Jin, Sungho; Berkowitz, Ami

    2014-06-05

    The research we conducted focuses on the rare-earth (RE)-free permanent magnet by modeling, simulating, and synthesizing exchange coupled two-phase (hard/soft) RE-free core-shell nano-structured magnet. The RE-free magnets are made of magnetically hard core materials (high anisotropy materials including Mn-Bi-X and M-type hexaferrite) coated by soft shell materials (high magnetization materials including Fe-Co or Co). Therefore, our research helps understand the exchange coupling conditions of the core/shell magnets, interface exchange behavior between core and shell materials, formation mechanism of core/shell structures, stability conditions of core and shell materials, etc.

  4. Design Features of a Planar Hybrid/Permanent Magnet Strong Focusing Undulator for Free Electron Laser (FEL) And Synchrotron Radiation (SR) Applications

    SciTech Connect (OSTI)

    Tatchyn, Roman; /SLAC

    2011-09-09

    Insertion devices for Angstrom-wavelength Free Electron Laser (FEL) amplifiers driven by multi-GeV electron beams generally require distributed focusing substantially stronger than their own natural focusing fields. Over the last several years a wide variety of focusing schemes and configurations have been proposed for undulators of this class, ranging from conventional current-driven quadrupoles external to the undulator magnets to permanent magnet (PM) lattices inserted into the insertion device gap. In this paper we present design studies of a flexible high-field hybrid/PM undulator with strong superimposed planar PM focusing proposed for a 1.5 Angstrom Linac Coherent Light Source (LCLS) driven by an electron beam with a 1 mm-mr normalized emittance. Attainable field parameters, tuning modes, and potential applications of the proposed structure are discussed.

  5. University of Texas, Austin Austin, TX 78712

    E-Print Network [OSTI]

    Gutowski, Timothy

    with the Department of Energy, to fund a study through the World Technology Evaluation Consortium WTEC that would waste, 3 energy, and 4 carbon emissions. Manufacturing is also a heavy user of water, and there have any other country in the world. This is true both on an absolute scale as well as a per capita scale 2

  6. Vulnerability Assessment for Hood County, TX 

    E-Print Network [OSTI]

    Aldalbahi, Farisal; Cousins, Tiffany; Franks, Kristie; Hamidah, Nur; Herring, Kalen; Kirimli, Ridvan; Rojas, Ricardo Maga; McCharen, Robert; Paiz-Tabash, William; Phillips, Ellen; Thapa, Jeewasmi; Wallick, Andrew; Yan, Wenqian; Zhang, Yixun

    2015-01-01

    Looking forward, we mapped the 100-year and 500-year floodplains in the County. A 100-year floodplain indicates areas that have a 1% chance each year of flooding. The majority of the floodplain follows the Brazos River, as would be expected, and its...

  7. Alamo, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Data Series Area 2009 2010 2011 2012 2013 2014 View...

  8. Helping TxDOT Build Better Bridges

    E-Print Network [OSTI]

    Institute (TTI) researchers work directly with urban and rural communities around Texas to put into practiceYEARS OF RESEARCHER TTI Helps Texas Communities Meet Transportation Challenges #12;2 Publisher://www.facebook.com/ttitamu http://twitter.com/TTI Follow TTI on: 3 TTI Helps Texas Communities Meet Transportation Challenges 4

  9. Micro-Grids for Colonias (TX)

    SciTech Connect (OSTI)

    Dean Schneider; Michael Martin; Renee Berry; Charles Moyer

    2012-07-31

    This report describes the results of the final implementation and testing of a hybrid micro-grid system designed for off-grid applications in underserved Colonias along the Texas/Mexico border. The project is a federally funded follow-on to a project funded by the Texas State Energy Conservation Office in 2007 that developed and demonstrated initial prototype hybrid generation systems consisting of a proprietary energy storage technology, high efficiency charging and inverting systems, photovoltaic cells, a wind turbine, and bio-diesel generators. This combination of technologies provided continuous power to dwellings that are not grid connected, with a significant savings in fuel by allowing power generation at highly efficient operating conditions. The objective of this project was to complete development of the prototype systems and to finalize and engineering design; to install and operate the systems in the intended environment, and to evaluate the technical and economic effectiveness of the systems. The objectives of this project were met. This report documents the final design that was achieved and includes the engineering design documents for the system. The system operated as designed, with the system availability limited by maintenance requirements of the diesel gensets. Overall, the system achieved a 96% availability over the operation of the three deployed systems. Capital costs of the systems were dependent upon both the size of the generation system and the scope of the distribution grid, but, in this instance, the systems averaged $0.72/kWh delivered. This cost would decrease significantly as utilization of the system increased. The system with the highest utilization achieved a capitol cost amortized value of $0.34/kWh produced. The average amortized fuel and maintenance cost was $0.48/kWh which was dependent upon the amount of maintenance required by the diesel generator. Economically, the system is difficult to justify as an alternative to grid power. However, the operational costs are reasonable if grid power is unavailable, e.g. in a remote area or in a disaster recovery situation. In fact, avoided fuel costs for the smaller of the systems in use during this project would have a payback of the capital costs of that system in 2.3 years, far short of the effective system life.

  10. Penitas, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)DecadeYear Jan FebCubic Feet) Annual Download Series History Download Series

  11. Penitas, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)DecadeYear Jan FebCubic Feet) Annual Download Series History Download

  12. Roma, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)DecadeYear Jan3 November 2013 IndependentYear Jan Feb Mar Apr May Jun4Year20,042

  13. Alamo, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0ProvedDecade2,948 2,724 2,570 2,304 1,670Same0 1 2 2State Offshore

  14. Alamo, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0ProvedDecade2,948 2,724 2,570 2,304 1,670Same0 1 2 2State

  15. Clint, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0ProvedDecade2,948CaliforniaFeet) (Million CubicYear Jan..

  16. Hidalgo, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)DecadeYear Jan Feb Mar Apr MayYear JanThousand CubicHealthYear-Month Week 1 Week

  17. Hidalgo, TX Natural Gas Exports to Mexico

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)DecadeYear Jan Feb Mar Apr MayYear JanThousand CubicHealthYear-Month Week 1 Week0

  18. CleanTX Foundation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar EnergyLawler,Coal Technologies Place: FloridaClean EnergyClean

  19. ~txF7D.ptx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematics And Statistics » USAJobsMotion toCoal_Budget_Fact_Sheet.pdf More Documents &ER-B-00-03 +

  20. Microsoft Word - abstract-lacognata-tx_2012

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework uses concrete7 Assessment ofLana Cox (803)7-3373MysteryTHE FLUORINE

  1. TX, RRC District 1 Proved Nonproducing Reserves

    U.S. Energy Information Administration (EIA) Indexed Site

    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 PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome Pageper ThousandTABLE OF39852326 144

  2. TX, RRC District 10 Proved Nonproducing Reserves

    U.S. Energy Information Administration (EIA) Indexed Site

    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 PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome Pageper ThousandTABLE98 2437,5949 35

  3. TX, RRC District 5 Proved Nonproducing Reserves

    U.S. Energy Information Administration (EIA) Indexed Site

    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 PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome Pageper909 2,235Changes,800 1 29 12 28

  4. TX, RRC District 6 Proved Nonproducing Reserves

    U.S. Energy Information Administration (EIA) Indexed Site

    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 PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome Pageper909 2,235Changes,8002 11 16 32

  5. TX, RRC District 8 Proved Nonproducing Reserves

    U.S. Energy Information Administration (EIA) Indexed Site

    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 PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome6,672 7,206 7,039 7,738

  6. TX, RRC District 9 Proved Nonproducing Reserves

    U.S. Energy Information Administration (EIA) Indexed Site

    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 PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome6,672 7,206 7,03979010,90411,5225 21 20

  7. TX, State Offshore Proved Nonproducing Reserves

    U.S. Energy Information Administration (EIA) Indexed Site

    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 PageMonthly","10/2015"4,"Ames5 Tables July 1996 Energy Information Administration Office of Coal, Nuclear,DecadeYearbyWithdrawalsHome6,672 7,2060 0 1 0 0 0 1996-2014 Lease

  8. JOURNAL DE PHYSIQUE Colloque C5, supplment au n 5, Tome 40, Mai 1979, page C5-273 The physics and the technology of rare earth permanent magnets

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to forecast the type of substitution to employ on the rare earth or transition metals, as a means and the technology of rare earth permanent magnets J. P. Haberer and H. Lemaire Aimants UGIMAG S.A., France Résumé rare earth base alloys have magnetic properties which substantially exceed the values obtained before

  9. Calculation of synchronous reactances of small permanent-magnet alternating-current motors: Comparison of analytical approach and finite element method with measurements

    SciTech Connect (OSTI)

    Gieras, J.F.; Wing, M. [Univ. of Cape Town, Rondebosch (South Africa). Dept. of Electrical Engineering] [Univ. of Cape Town, Rondebosch (South Africa). Dept. of Electrical Engineering; Santini, E. [Univ. of Rome (Italy). Dept. of Electrical Engineering] [Univ. of Rome (Italy). Dept. of Electrical Engineering

    1998-09-01

    The synchronous reactances of permanent magnet (PM) motors have been determined using: (1) analytical method, i.e., form factors of the stator field (armature reaction factors), (2) finite element method (FEM), and (3) experimental tests on a special machine set. The analytical method is widely used in calculations of synchronous reactances of salient pole synchronous machines with electromagnetic excitation. Rotors of PM synchronous machines have more complicated structures, hence it is more difficult to predict accurately the magnetic field distribution in their airgaps in order to find the form factors of the stator field. Numerical methods of field analysis can easily solve this problem. The FEM can predict both the synchronous and mutual (armature reaction) reactances in the d and q axes. The leakage reactance can then be evaluated as a difference between synchronous and mutual reactances. As an example, a small, three-phase, four-pole motor with SmCo surface mounted PM`s (three parallel magnets per pole), and mild-steel pole shoes has been investigated. Such a complicated rotor structure has been intentionally designed in order to be able to compare the advantages and disadvantages of the analytical method and the FEM. In the FEM, the reactances have been calculated using both the flux linkage and current/energy perturbation method. Synchronous reactances as functions of the stator current and load angle obtained analytically from the FEM modeling and from measurements have been compared.

  10. Are Permanent Magnets Really Permanent? | GE Global Research

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L O O D SFederal8823 Revision 02August 1, LowerMicroclimatesAre

  11. 2011 International undergraduate admissions table This table should be used as a guide only by students who are not an Australian citizen, permanent resident of Australia or New Zealand citizen.

    E-Print Network [OSTI]

    by students who are not an Australian citizen, permanent resident of Australia or New Zealand citizen Sciences) 3 14 10.5 13.5 74% 16 9.5 31 86% 13 8 1690 28 86 8 73% B Philosophy (Hons) Arts * 4 22 (best 4 Business 3 16 12 15 80% 12 11 33 90% 15 9 1780 30 90 6 75% Assumed knowledge -- Maths B Social Science

  12. Chlorofluorocarbons, Sulfur Hexafluoride, and Dissolved Permanent Gases in Ground Water from Selected Sites In and Near the Idaho National Engineering and Environmental Laboratory, Idaho, 1994 - 1997

    SciTech Connect (OSTI)

    Busenberg, E.; Plummer, L.N.; Bartholomay, R.C.; Wayland, J.E.

    1998-08-01

    From July 1994 through May 1997, the U.S. Geological Survey, in cooperations with the Department of Energy, sampled 86 wells completed in the Snake River Plain aquifer at and near the Idaho National Engineering and Environmental Laboratory (INEEL). The wells were sampled for a variety of constituents including one- and two-carbon halocarbons. Concentrations of dichlorodifluoromethane (CFC-12), trichlorofluoromethane (CFC-11), and trichlorotrifluororoethane (CFC-113) were determined. The data will be used to evaluate the ages of ground waters at INEEL. The ages of the ground water will be used to determine recharge rates, residence time, and travel time of water in the Snake River Plain aquifer in and near INEEL. The chromatograms of 139 ground waters are presented showing a large number of halomethanes, haloethanes, and haloethenes present in the ground waters underlying the INEEL. The chromatograms can be used to qualitatively evaluate a large number of contaminants at parts per trillion to parts per billion concentrations. The data can be used to study temporal and spatial distribution of contaminants in the Snake River Plain aquifer. Representative compressed chromatograms for all ground waters sampled in this study are available on two 3.5-inch high density computer disks. The data and the program required to decompress the data can be obtained from the U.S. Geological Survey office at Idaho Falls, Idaho. Sulfur hexafluoride (SF6) concentrations were measured in selected wells to determine the feasibility of using this environmental tracer as an age dating tool of ground water. Concentrations of dissolved nitrogen, argon, carbon dioxide, oxygen, and methane were measured in 79 ground waters. Concentrations of dissolved permanent gases are tabulated and will be used to evaluate the temperature of recharge of ground water in and near the INEEL.

  13. Contribution to the development of DOE ARM Climate Modeling Best Estimate Data (CMBE) products: Satellite data over the ARM permanent and AMF sites: Final Report

    SciTech Connect (OSTI)

    Xie, B; Dong, X; Xie, S

    2012-05-18

    To support the LLNL ARM infrastructure team Climate Modeling Best Estimate (CMBE) data development, the University of North Dakota (UND)'s group will provide the LLNL team the NASA CERES and ISCCP satellite retrieved cloud and radiative properties for the periods when they are available over the ARM permanent research sites. The current available datasets, to date, are as follows: the CERES/TERRA during 200003-200812; the CERES/AQUA during 200207-200712; and the ISCCP during 199601-200806. The detailed parameters list below: (1) CERES Shortwave radiative fluxes (net and downwelling); (2) CERES Longwave radiative fluxes (upwelling) - (items 1 & 2 include both all-sky and clear-sky fluxes); (3) CERES Layered clouds (total, high, middle, and low); (4) CERES Cloud thickness; (5) CERES Effective cloud height; (6) CERES cloud microphysical/optical properties; (7) ISCCP optical depth cloud top pressure matrix; (8) ISCCP derived cloud types (r.g., cirrus, stratus, etc.); and (9) ISCCP infrared derived cloud top pressures. (10) The UND group shall apply necessary quality checks to the original CERES and ISCCP data to remove suspicious data points. The temporal resolution for CERES data should be all available satellite overpasses over the ARM sites; for ISCCP data, it should be 3-hourly. The spatial resolution is the closest satellite field of view observations to the ARM surface sites. All the provided satellite data should be in a format that is consistent with the current ARM CMBE dataset so that the satellite data can be easily merged into the CMBE dataset.

  14. High-Risk Prostate Cancer With Gleason Score 8-10 and PSA Level {<=}15 ng/ mL Treated With Permanent Interstitial Brachytherapy

    SciTech Connect (OSTI)

    Fang, L. Christine [Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Merrick, Gregory S., E-mail: gmerrick@urologicresearchinstitute.org [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Butler, Wayne M.; Galbreath, Robert W.; Murray, Brian C.; Reed, Joshua L. [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Adamovich, Edward [Department of Pathology, Wheeling Hospital, Wheeling, WV (United States); Wallner, Kent E. [Puget Sound Veterans Affairs Hospital, Seattle, WA (United States)

    2011-11-15

    Purpose: With widespread prostate-specific antigen (PSA) screening, there has been an increase in men diagnosed with high-risk prostate cancer defined by a Gleason score (GS) {>=}8 coupled with a relatively low PSA level. The optimal management of these patients has not been defined. Cause-specific survival (CSS), biochemical progression-free survival (bPFS), and overall survival (OS) were evaluated in brachytherapy patients with a GS {>=}8 and a PSA level {<=}15 ng/mL with or without androgen-deprivation therapy (ADT). Methods and Materials: From April 1995 to October 2005, 174 patients with GS {>=}8 and a PSA level {<=}15 ng/mL underwent permanent interstitial brachytherapy. Of the patients, 159 (91%) received supplemental external beam radiation, and 113 (64.9%) received ADT. The median follow-up was 6.6 years. The median postimplant Day 0 minimum percentage of the dose covering 90% of the target volume was 121.1% of prescription dose. Biochemical control was defined as a PSA level {<=}0.40 ng/mL after nadir. Multiple parameters were evaluated for impact on survival. Results: Ten-year outcomes for patients without and with ADT were 95.2% and 92.5%, respectively, for CSS (p = 0.562); 86.5% and 92.6%, respectively, for bPFS (p = 0.204); and 75.2% and 66.0%, respectively, for OS (p = 0.179). The median post-treatment PSA level for biochemically controlled patients was <0.02 ng/mL. Multivariate analysis failed to identify any predictors for CSS, whereas bPFS and OS were most closely related to patient age. Conclusions: Patients with GS {>=}8 and PSA level {<=}15 ng/mL have excellent bPFS and CSS after brachytherapy with supplemental external beam radiotherapy. The use of ADT did not significantly impact bPFS, CSS, or OS.

  15. FromPop-UPto Permanent-.

    E-Print Network [OSTI]

    Handy, Susan L.

    , Zemsky tackled the empty square and its long- vacant 1920s gas station. In just a few weeks, a verdant." As with America's most famous exam- ples--New York City's heavily publicized pedestrianization of Broadway and San cars around Times Square and Herald Square has mushroomed into an effort that wifl eventually run about

  16. WIPP Permanent Marker Conceptual Designs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking WithTelecentricN A 035(92/02) nerg *4 o**ColoradoDOE Awards4

  17. Power-Factor and Torque Calculation under Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation

    SciTech Connect (OSTI)

    Lee, Seong T [ORNL; Burress, Timothy A [ORNL; Tolbert, Leon M [ORNL

    2009-01-01

    This paper introduces a new method for calculating the power factor and output torque by considering the cross saturation between direct-axis (d-axis) and quadrature-axis (q-axis) of an interior permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include the cross saturation effect by adding the cross-coupled inductance terms. This paper also contains the new method of calculating the cross-coupled inductance values as well as self-inductance values in d- and q-axes. The analyzed motor is a high-speed brushless field excitation machine that offers high torque per ampere per core length at low speed and weakened flux at high speed, which was developed for the traction motor of a hybrid electric vehicle. The conventional two-axis IPMSM model was modified to include the cross-saturation effect by adding the cross-coupled inductance terms Ldq and Lqd. By the advantage of the excited structure of the experimental IPMSM, the analyzing works were performed under two conditions, the highest and lowest excited conditions. Therefore, it is possible to investigate the cross-saturation effect when a machine has higher magnetic flux from its rotor. The following is a summary of conclusions that may be drawn from this work: (1) Considering cross saturation of an IPMSM offers more accurate expected values of motor parameters in output torque calculation, especially when negative d-axis current is high; (2) A less saturated synchronous machine could be more affected by the cross-coupled saturation effect; (3) Both cross-coupled inductances, L{sub qd} and L{sub dq}, are mainly governed by d-axis current rather than q-axis current; (4) The modified torque equation, can be used for the dynamic model of an IPMSM for developing a better control model or control strategy; and (5) It is possible that the brushless field excitation structure has a common magnetic flux path on both d- and q-axis, and as a result, the reluctance torque of the machine could be reduced.

  18. CRADA Final Report: Application of Dual-Mode Invertor Control to Commercially Available Radial-Gap Permanent Magnet Motors - Vol. 1

    SciTech Connect (OSTI)

    Lawler, J.S.; McKeever, J.W.; Downing, M.E.; Stahlhut, R.D; Bremmer, R.; Shoemaker, J.M.; Seksarian, A.K.; Poore, B.; Lutz, J.

    2006-05-01

    John Deere and Company (Deere), their partner, UQM Technologies, Inc. (UQM), and the Oak Ridge National Laboratory's (ORNL's) Power Electronics and Electric Machinery Research Center (PEEMRC) recently completed work on the cooperative research and development agreement (CRADA) Number ORNL 04-0691 outlined in this report. CRADA 04-0691 addresses two topical issues of interest to Deere: (1) Improved characterization of hydrogen storage and heat-transfer management; and (2) Potential benefits from advanced electric motor traction-drive technologies. This report presents the findings of the collaborative examination of potential operational and cost benefits from using ORNL/PEEMRC dual-mode inverter control (DMIC) to drive permanent magnet (PM) motors in applications of interest to Deere. DMIC was initially developed and patented by ORNL to enable PM motors to be driven to speeds far above base speed where the back-electromotive force (emf) equals the source voltage where it is increasingly difficult to inject current into the motor. DMIC is a modification of conventional phase advance (CPA). DMIC's dual-speed modes are below base speed, where traditional pulse-width modulation (PWM) achieves maximum torque per ampere (amp), and above base speed, where six-step operation achieves maximum power per amp. The modification that enables DMIC adds two anti-parallel thyristors in each of the three motor phases, which consequently adds the cost of six thyristors. Two features evaluated in this collaboration with potential to justify the additional thyristor cost were a possible reduction in motor cost and savings during operation because of higher efficiency, both permitted because of lower current. The collaborative analysis showed that the reduction of motor cost and base cost of the inverter was small, while the cost of adding six thyristors was greater than anticipated. Modeling the DMIC control displayed inverter efficiency gains due to reduced current, especially under light load and higher speed. This current reduction, which is the salient feature of DMIC, may be significant when operating duty cycles have low loads at high frequencies. Reduced copper losses make operation more efficient thereby reducing operating costs. In the Deere applications selected for this study, the operating benefit was overshadowed by the motor's rotational losses. Rotational losses of Deere 1 and Deere 2 dominate the overall drive efficiency so that their reduction has the greatest potential to improve performance. A good follow-up project would be to explore cost erective ways to reduce the rotational losses buy 66%.

  19. CHARACTERIZATION OF GRAPHITE SLEEVES FROM BUGEY 1 EDF PLANT FOR PERMANENT DISPOSAL--MEASUREMENT AND CALCULATION OF SCALING FACTORS FOR DIFFICULT-TO-MEASURE NUCLIDES

    SciTech Connect (OSTI)

    PONCET, Bernard R.

    2003-02-27

    Electricite De France's Bugey-1 reactor, with graphite moderator, was shutdown permanently in 1994. The natural uranium elements are encased in graphite sleeves to facilitate handling. 2,000 m3 of concrete containers, containing non conditioned graphite sleeves, must be characterized and conditioned before shipment to the national repository site called ''Centre de l'Aube''. The characterization work consists in quantifying Difficult-To-Measure nuclides (DTM) by the use of Scaling Factors (SF), which use Co-60 as tracer. Bugey developed an industrial method for the gamma counting of each package to perform easily and rapidly the measurement of the Co-60 content. Depending upon the DTM radionuclide, Co-60 scaling factors are determined, or by measurement on graphite samples (case of C-14, Cl-36, Ni-63, H-3), either by using a calculation technique which is based upon the impurities present in the graphite sleeves. This method is applied for the other pure beta emitters all DTM radionucli des : Ag-108m, Be-10, Ca-41, Cd-109, Cd-113m, Co-57, Cs-135, Cs-137, Eu-155, Fe-55, Gd-153, Mo-93, Nb- 93m, Nb-94, Ni-59, Pd-107, Pm-147, Sm-151, Sn-119m, Sn-121m, Sn-126, Sr-90, Tc-99, V-49 and Zr-93. Calculations use six sleeve history cases : 1 year at 50% power, 2 years at 50 % power, 3 years at 50 % power, 4 years at 50 % power, 1 year at 100 % power and 2 years at 100 % power. The DTM nuclides have been calculated from impurity concentrations for each of these six cases, and the greatest scaling factor has been kept. The calculation is based upon two impurity sets: First impurity set : a reverse activation calculation provides us with the best estimate value of impurities calculated from the measured mean gamma spectrum and from measured scaling factors. It consists in solving a system of simultaneous equations for the impurities as a function of the mean gamma radioactive spectrum and of the measured scaling factors. The concerned calculated impurities are Co, Cl, Li, Ag, Cs, Eu, Fe, Ni, Sb, Sc, Zn and Sn. Second impurity set: The other impurities which were not available by this reverse calculation are originated from the greatest value, which has been measured in the graphite and sometimes by using the detection limit. This method allows us to avoid some detection limit problems and statistical weaknesses. It gets better, cheaper and faster characterization by mixing easy gamma spectrum measurement and simple linear calculation.

  20. Environmental disaster or just a drop in the bucket: Texas scientists on the real effects of the Deewater Horizon oil spill 

    E-Print Network [OSTI]

    Lee, Leslie

    2011-01-01

    .pdf.txt Content-Type text/plain; charset=windows-1252 Winter 2011 tx H2O 3 or just a drop in thebucket?Texas scientists on the real e?ects of the Deepwater Horizon oil spill 4 tx H2O Winter 2011 Environmental Disaster Continued What if gasoline... used by some oil companies,? Bianchi commented to Texas A&M News & Information Services in November. ??ey use high pressure water systems, which on rocks is ?ne, but not on plant material. So this has likely cut them [the plant material] back so...

  1. Maximization of permanent trapping of CO{sub 2} and co-contaminants in the highest-porosity formations of the Rock Springs Uplift (Southwest Wyoming): experimentation and multi-scale modeling

    SciTech Connect (OSTI)

    Piri, Mohammad

    2014-03-31

    Under this project, a multidisciplinary team of researchers at the University of Wyoming combined state-of-the-art experimental studies, numerical pore- and reservoir-scale modeling, and high performance computing to investigate trapping mechanisms relevant to geologic storage of mixed scCO{sub 2} in deep saline aquifers. The research included investigations in three fundamental areas: (i) the experimental determination of two-­?phase flow relative permeability functions, relative permeability hysteresis, and residual trapping under reservoir conditions for mixed scCO{sub 2}-­?brine systems; (ii) improved understanding of permanent trapping mechanisms; (iii) scientifically correct, fine grid numerical simulations of CO{sub 2} storage in deep saline aquifers taking into account the underlying rock heterogeneity. The specific activities included: (1) Measurement of reservoir-­?conditions drainage and imbibition relative permeabilities, irreducible brine and residual mixed scCO{sub 2} saturations, and relative permeability scanning curves (hysteresis) in rock samples from RSU; (2) Characterization of wettability through measurements of contact angles and interfacial tensions under reservoir conditions; (3) Development of physically-­?based dynamic core-­?scale pore network model; (4) Development of new, improved high-­? performance modules for the UW-­?team simulator to provide new capabilities to the existing model to include hysteresis in the relative permeability functions, geomechanical deformation and an equilibrium calculation (Both pore-­? and core-­?scale models were rigorously validated against well-­?characterized core-­? flooding experiments); and (5) An analysis of long term permanent trapping of mixed scCO{sub 2} through high-­?resolution numerical experiments and analytical solutions. The analysis takes into account formation heterogeneity, capillary trapping, and relative permeability hysteresis.

  2. Regional distribution of diagenetic carbonate cement in Palaeocene deepwater

    E-Print Network [OSTI]

    Haszeldine, Stuart

    -off) localized above salt tectonics. Isotopic and petrographic evidence indicates that much carbonate C

  3. Epifaunal Assemblages on Deep-water Corals in Roatan, Honduras 

    E-Print Network [OSTI]

    Lavelle, Katherine

    2012-10-30

    = Luna Beach, LWR= Lawson?s Rock, OLS= Old Loafer?s, SDM= Sueno del Mar, SDR= Sueno del Bahia). Table 2. Absolute abundance of epifaunal species at study sites (AKR= Anthony?s Key, GBB= Gibson Bight, HMB= Half Moon Bay, LBE= Luna Beach, LWR= Lawson...= Half Moon Bay, LBE= Luna Beach, LWR= Lawson?s Rock, OLS= Old Loafer?s, SDM= Sueno del Mar, SDR= Sueno del Bahia). Figure 4. MDS plot of epifaunal assemblages by depth zone (m). Figure 5. MDS plot of epifaunal assemblages by coral substrate. Figure...

  4. Interlaboratory Analytical Comparison Study to Support Deepwater Horizon

    E-Print Network [OSTI]

    R. Kucklick Analytical Chemistry Division Material Measurement Laboratory National Institute tissue QA10TIS01 reported here. In this exercise, selected polycyclic aromatic hydrocarbons (PAHs have collected environmental samples for hydrocarbon analysis and submitted them to different

  5. Interlaboratory Analytical Comparison Study to Support Deepwater Horizon

    E-Print Network [OSTI]

    . Kucklick Analytical Chemistry Division Material Measurement Laboratory National Institute of Standards, crude oil QA10OIL01 reported here. In this exercise, selected polycyclic aromatic hydrocarbons (PAHs will be required. In addition, numerous other entities have collected environmental samples for hydrocarbon

  6. Deep-water subsurface imagingusing OBS interferometry Olivier Carrire1

    E-Print Network [OSTI]

    Gerstoft, Peter

    for detecting and monitoring changes in hydrate distribution and other hydrocarbon related subsurface process used here crosses one of the main normal faults of the mound. The measurement of pressure and particle

  7. Interlaboratory Analytical Comparison Study to Support Deepwater Horizon

    E-Print Network [OSTI]

    and John R. Kucklick Analytical Chemistry Division Material Measurement Laboratory National Institute, marine sediment QA10SED01 reported here. In this exercise, selected polycyclic aromatic hydrocarbons for hydrocarbon analysis and submitted them to different laboratories throughout the country. In the past

  8. The Impact of a Deep-Water Plunging Breaker

    E-Print Network [OSTI]

    Ikeda, Christine; Brucker, Kyle A; Drazen, David A; Dommermuth, Douglas G; Fu, Thomas; Fullerton, Anne M; Duncan, James H

    2014-01-01

    The impact of a plunging breaking wave (wavelength approximately 1.3m) on a rigidly mounted rigid cube structure (dimension 0.31m) that is partially submerged is explored through experiments and numerical calculations. The experiments are carried out in a wave tank and the breaker is generated with a mechanical wave maker using a dispersive focusing technique. The water-surface profile upstream of the front face of the cube and in its vertical centerplane is measured using a cinematic laser-induced fluorescence technique. The three-dimensional flow in the wave tank is simulated directly using the Numerical Flow Analysis (NFA) code. The experiments and the calculations are used to explore the details of the wave-impact process and, in particular, the formation of the high-speed vertical jet that is found on the front face of the cube under some impact conditions.

  9. FE's Ultra-Deepwater Program focuses on spill prevention, safety...

    Office of Environmental Management (EM)

    6, 2014 - 1:44pm Addthis Nearly everyone recognizes that prudent development of domestic oil and natural gas resources will continue to be an important part of U.S. energy strategy...

  10. Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum...

    Energy Savers [EERE]

    designed to benefit consumers by developing technologies to increase America's domestic oil and gas production and reduce the Nation's dependency on foreign imports. Key aspects...

  11. Development of design tool for statically equivalent deepwater mooring systems 

    E-Print Network [OSTI]

    Udoh, Ikpoto Enefiok

    2009-05-15

    mooring systems ........................................ 34 1.20 Spread mooring systems ................................................................. 34 2.1 OTRC wave basin and FPSO model ............................................... 37 2... stiffness curves for the Brazilian FPSO .............................. 58 2.11 Free body diagram of elastic cable connecting points A and B ....... 59 2.12 Static stiffness test...

  12. Experimental and numerical analysis of a deepwater mini-TLP 

    E-Print Network [OSTI]

    Guichard, Aurelien

    2001-01-01

    As the quest for oil and gas resources drives the industry to ever deeper waters, model testing still represents an essential step after numerical modeling when designing offshore platforms in these hostile environments. ...

  13. Ultra-Deepwater Advisory Committee Members | Department of Energy

    Energy Savers [EERE]

    Ms. Mary Jane Wilson* President and CEO WZI Inc. Dr. Lesli J. Wood* Senior Research Scientist Bureau of Economic Geology University of Texas at Austin * Special Government employee...

  14. Ultra-Deepwater Advisory Committee Elena Melchert Acting Designated...

    Energy Savers [EERE]

    September 17, 2013 Attachment 3 2 2014 Annual Plan Review Process * September 17, 2013; Web Meeting - Overview of DOE Research Program - Establish subcommittees * October 8, 2013;...

  15. LIVE: Meeting on Strengthening Deepwater Blowout Containment Capabilities

    Broader source: Energy.gov [DOE]

    Secretary Chu and Secretary of the Interior Ken Salazar convened with top U.S. government scientists and key industry and stakeholder leaders to discuss how to strengthen capabilities for responding to potential blowouts of oil and gas wells on the Outer Continental Shelf.

  16. Subsea technology progress buoys Gulf of Mexico deepwater action

    SciTech Connect (OSTI)

    Koen, A.D.

    1996-09-02

    This paper reviews the technological advances in subsea oil and gas equipment to drive a new era of exploration and development in the outer continental shelf and other areas considered to complex to economically pursue. As subsea technology expands into deep waters, operators in the Gulf are using subsea production systems based on template and well cluster designs. Subsea cluster systems are gaining favor among operators because they allow more flexibility with shallow water flow which occurs during the first 1,000 feet of clay formations below the seabed. The paper also provides insight into deep water drilling, remote operated vehicles, deep water umbilicals, and other deep water production equipment.

  17. EA-1792: University of Maine's Deepwater Offshore Floating Wind Turbine

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: AlternativeCommunication3-E Wholesale Power Rate Schedule Duke-3-E91:Final48:593EA-1786::

  18. deepwater_current_proj | netl.doe.gov

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

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

  19. Deepwater Oil & Gas Resources | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-in electricLaboratory | version of the1996ofDavidNovember 16,May

  20. ORISE: DeepwaterHorizon and Nuclear & Radiological Incidents

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shinesSolarNewsusceptometer underI REEECNO OFChicago No-Noticel l i a m H a l e y