Sample records for deepwater permanent subsea

  1. Research Portfolio Report Ultra-Deepwater: Subsea Systems Reliability /

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared atEffect of DryCorrection MethodORD's CatalysisRevealingSubsea

  2. A simulation study of a Subsea Mudlift Drilling system during tripping operations

    E-Print Network [OSTI]

    Escobar Parada, Alvaro Hernando

    1999-01-01T23:59:59.000Z

    To face the new challenges that the petroleum industry has in deepwaters, a Subsea Mudlift Drilling Joint Industry Project, SMDJIP, was formed. The main task for this project is to develop the technology needed to drill in water depths beyond 7500...

  3. Ultra-Deepwater Production Systems

    SciTech Connect (OSTI)

    Ken L. Smith; Marc E. Leveque

    2005-05-31T23:59:59.000Z

    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.

  4. Ultra-Deepwater Production Systems

    SciTech Connect (OSTI)

    K. L. Smith; M. E. Leveque

    2004-09-30T23:59:59.000Z

    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.

  5. Are subsurface safety valves needed in deepwater?

    SciTech Connect (OSTI)

    Verret, A.; Hey, C.

    1995-11-01T23:59:59.000Z

    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.

  6. Subsea control and data acquisition

    SciTech Connect (OSTI)

    Not Available

    1990-01-01T23:59:59.000Z

    This book contains papers presented at the conference on subsea control and data acquisition. The tasks performed by subsea control systems, although fairly straightforward, are dominated by an alien environment and the high costs associated with failure and repair. The evolution of systems design has resulted in a growing confidence in equipment reliability. In the future, however, more searching demands may include active regulation of valves and the use of data for reservoir management purposes. The emphasis of the papers is on technical depth and understanding, with particular attention being paid to the science control and data monitoring in relation to the task of hydrocarbon recovery.

  7. Subsea Pumped Hydro Storage -A Technology Assessment.

    E-Print Network [OSTI]

    Falk, Johan

    2013-01-01T23:59:59.000Z

    ??A novel technology for energy storage called Subsea Pumped Hydro Storage (SPHS) has been evaluated from a techno-economical point of view. Intermittent renewable energy sources… (more)

  8. An assessment of subsea production systems

    E-Print Network [OSTI]

    Devegowda, Deepak

    2005-02-17T23:59:59.000Z

    PROCESSING SYSTEMS.............................................................5 2.1 Downhole Separation Technology.......................................................6 2.2 Subsea Separation...............................................................62 5.1 "Intelligent" Completions ...................................................................62 5.2 Intelligent Well Systems-Reliability Issues.........................................63 5.3 Downhole Monitoring from...

  9. New ultra-deepwater rig with dual rotaries will reduce costs

    SciTech Connect (OSTI)

    Cole, J.C.; Herrmann, R.P.; Scott, R.J. [Transocean Offshore Inc., Houston, TX (United States); Shaughnessy, J.M. [Amoco Corp., Houston, TX (United States)

    1997-05-26T23:59:59.000Z

    The Discoverer Enterprise, a next generation, ultra-deepwater drill ship with a dual rotary system, will decrease drilling and completion costs by reducing bottom hole assembly (BHA) and tubular preparation time. Transocean Offshore received a contract from Amoco Corp. to build the ultra-deep floating rig and is scheduled to spud its first well in July 1998. It will generally work in water deeper than 6,000 ft. The rig design involves a new approach that addresses the overall well-construction process and equipment required to decrease significantly deepwater drilling time. The Discoverer is the first ultra-deepwater rig designed specifically for handling subsea completions and extended well tests. The paper discusses increased deepwater rig demand, rig construction costs, drillship design, well construction, development drilling, and cost justification.

  10. A Modular Control System for Remote Subsea Eric Stephen Smith

    E-Print Network [OSTI]

    Wood, Stephen L.

    A Modular Control System for Remote Subsea Equipment by Eric Stephen Smith Bachelor of Science the undersigned committee hereby approve the attached thesis A Modular Control System for Remote Subsea Equipment and Environmental Systems #12;iv Abstract Title: A Modular Control System for Remote Subsea Equipment Author: Eric

  11. SUBSEA FABRICATION AND TIE-IN Wednesday, March 10, 2010

    E-Print Network [OSTI]

    George, Glyn

    SUBSEA FABRICATION AND TIE-IN DATE Wednesday, March 10, 2010 LOCATION Angus Bruneau Lecture Theatre was awarded the fabrication of the subsea manifolds for the North Amethyst offshore oil development, operated Newfoundland's coast. It represents the first subsea tieback project in the region. Hear first hand what

  12. 1 December 2011 Lady of substance in solving subsea challenges

    E-Print Network [OSTI]

    Tan, Chew Lim

    1 December 2011 Lady of substance in solving subsea challenges Ms Zheng Jiexin, engineer with a liking for subsea challenges. Ms Zheng Jiexin was awarded the President's Graduate Fellowship recently Professor Andrew Palmer, a leading authority in subsea engineering, has met Ms Zheng Jiexin in Dalian

  13. NETL F 451.1/1-1, Categorical Exclusion Designation Form

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

    Canyon Offshore SCNGO FY13-1524 months Gary Covatch Houston, TX Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing Confirm application &...

  14. CX-010478: Categorical Exclusion Determination | Department of...

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

    Determination CX-010478: Categorical Exclusion Determination Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9,...

  15. CX-010789: Categorical Exclusion Determination | Department of...

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

    Determination CX-010789: Categorical Exclusion Determination Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing CX(s) Applied: A9...

  16. NETL F 451.1/1-1, Categorical Exclusion Designation Form

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

    Inc SCNGO FY13-1424 months Gary Covatch Houston, TX Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir Construction and Testing Confirm application &...

  17. Stirling engine ready for subsea deployment

    SciTech Connect (OSTI)

    Not Available

    1985-05-01T23:59:59.000Z

    The key technologies are now in place to provide for long-term independent diver support on the seabed, in place of large and costly surface support spreads. The lack of a compact air-independent energy source in the medium power range has prevented the evolution of underwater autonomous offshore operations. Five key advancements will now permit surface-independence in the performance of many subsea tasks: efficient and compact power and heat energy, computerized systems for navigation and instrumentation, composite materials for high pressure, low weight gas storage, closed-circuit breathing systems for divers, and underwater robotics and artificial intelligence.

  18. Subsea Technology and Electrification | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAbout »Lab (Newport NewsStyle  2007SubscriptionsSubsea

  19. Method and apparatus for production of subsea hydrocarbon formations

    DOE Patents [OSTI]

    Blandford, J.W.

    1995-01-17T23:59:59.000Z

    A system for controlling, separating, processing and exporting well fluids produced from subsea hydrocarbon formations is disclosed. The subsea well tender system includes a surface buoy supporting one or more decks above the water surface for accommodating equipment to process oil, gas and water recovered from the subsea hydrocarbon formation. The surface buoy includes a surface-piercing central flotation column connected to one or more external flotation tanks located below the water surface. The surface buoy is secured to the sea bed by one or more tendons which are anchored to a foundation with piles imbedded in the sea bed. The system accommodates multiple versions on the surface buoy configuration. 20 figures.

  20. Method and apparatus for production of subsea hydrocarbon formations

    DOE Patents [OSTI]

    Blandford, Joseph W. (15 Mott La., Houston, TX 77024)

    1995-01-01T23:59:59.000Z

    A system for controlling, separating, processing and exporting well fluids produced from subsea hydrocarbon formations is disclosed. The subsea well tender system includes a surface buoy supporting one or more decks above the water surface for accommodating equipment to process oil, gas and water recovered from the subsea hydrocarbon formation. The surface buoy includes a surface-piercing central flotation column connected to one or more external floatation tanks located below the water surface. The surface buoy is secured to the seabed by one or more tendons which are anchored to a foundation with piles imbedded in the seabed. The system accommodates multiple versions on the surface buoy configuration.

  1. Design of an underwater vertical glider for subsea equipment delivery

    E-Print Network [OSTI]

    Ambler, Charles Kirby

    2010-01-01T23:59:59.000Z

    Delivery of subsea equipment and sensors is generally accomplished with unguided sinking platforms or powered autonomous underwater vehicles (AUVs). An alternative would be to augment existing platforms with navigation and ...

  2. Electric actuation of a surface controlled subsea safety valve

    E-Print Network [OSTI]

    Bartlett, Timothy Joseph

    2013-02-22T23:59:59.000Z

    to the conversion of many components from hydraulic operation to electric. Therefore, it is the purpose of this report to detail and propose an engineering solution to the electrical conversion of a surface controlled subsea safety valve (SCSSV). Preliminary...

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

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    in the Gulf of Mexico killing eleven workers. The blowout preventer failed due to buckling of the drill pipe, resulting in the release of massive quantities of crude oil and natural gas at a depth of about 1500 m million liters of crude oil and 4.5 x 10 8 kg (~600 million scm) of natural gas were released

  4. Trends in Engineering Enrollment, 2008-13 Advanced Subsea Engr Undergraduate 3

    E-Print Network [OSTI]

    Azevedo, Ricardo

    2013 Advanced Subsea Engr Undergraduate 3 Aerosp Engineering Masters 12 13 15 9 5 5 Doctoral 3 1 1 All Subsea Engineering Undergraduate 10 20 48 Masters 21 All 10 20 69 Total College Enrollment Undergraduate

  5. Subsea Mudlift Drilling: evaluation of the pressure differential problem with subsea pump

    E-Print Network [OSTI]

    Johansen, Tarjei

    2000-01-01T23:59:59.000Z

    of the mud in the drillstring equals the hydrostatic head in the water column. The natural free fall rate of the fluid inside the drillstnng is the limiting factor in reducing the circulation rates. The use of a drillstring valve to ensure that the fluid.... The subsea pumps are designed so that they can operate in a constant inlet pressure mode or in a constant circulation rate mode The riser is filled with seawater and this fluid inside the riser is circulated to the surface and through a seawater tnp tank...

  6. FW: Mark Sogge USGS -subsea oil plume Marcia K McNutt 0 mark_sogge

    E-Print Network [OSTI]

    Fleskes, Joe

    Mark - FW: Mark Sogge USGS - subsea oil plume t Marcia K McNutt 0 mark_sogge Cc: Catherine Cesnik - subsea oil plume Just got a heads-up that a USGS employee is getting involved in the subsea oil plume is the Flagstaff Field Center Chief of Staff. This is the first I've heard of any USGS involvement in the subsea

  7. Toward a Mission Value for Subsea Search with Bottom-Type Variability

    E-Print Network [OSTI]

    Virginia Tech

    Toward a Mission Value for Subsea Search with Bottom-Type Variability Apoorva Shende, Matthew J is motivated by subsea applications where the mobile sensor agent surveys the seafloor using sonar. We presume function for path planning of mobile sensor agents in order to automate the search for subsea objects

  8. 60 IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 23, NO. 1, JANUARY 1998 Teleprogramming for Subsea Teleoperation

    E-Print Network [OSTI]

    Whitcomb, Louis L.

    60 IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 23, NO. 1, JANUARY 1998 Teleprogramming for Subsea of subsea intervention tasks from an unmanned untethered submersible while using acoustic communications conventional teleoperation techniques and a system is presented which permits subsea teleoperative tasks

  9. Toolkit and drillstring valve for subsea mudlift drilling

    E-Print Network [OSTI]

    Oskarsen, Ray Tommy

    2001-01-01T23:59:59.000Z

    to be introduced if exploration is to be continued into even deeper water. One proposed method is subsea mudlift drilling (SMD), which is a joint industry project. The method uses a seafloor pump, which pumps the mud from the annulus at seafloor, through a...

  10. NETL F 451.1/1-1, Categorical Exclusion Designation Form

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

    DE-AC26-07NT42677 RPSEA FE Stress Engineering Services SCNGO FY13-1424 months Gary Covatch Houston, TX Deepwater Permanent Subsea Pressure Compensated Chemical Reservoir...

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. Method and apparatus for production of subsea hydrocarbon formations

    DOE Patents [OSTI]

    Blandford, Joseph W. (15 Mott La., Houston, TX 77024)

    1992-01-01T23:59:59.000Z

    A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible catenary production riser and expert riser bundles, and serviced by separate catenary pipe bundles. Piles are secured to the seabed, each pile assembly being pivotally connected to a lower rigid tendon, which is in turn connected to tendons arranged about the periphery of the interconnected cylindrical tanks.

  17. Method and apparatus for production of subsea hydrocarbon formations

    DOE Patents [OSTI]

    Blandford, Joseph W. (15 Mott La., Houston, TX 77024)

    1994-01-01T23:59:59.000Z

    A well tender system for controlling, separating, storing and offloading well fluids produced from subsea hydrocarbon formations. The system comprises a vertically aligned series of tethered cylindrical tanks which are torsionally stabilized by flexible catenary production riser and export riser bundles, and serviced by separate catenary pipe bundles. Piles are secured to the seabed, each pile assembly being pivotally connected to a lower rigid tendon, which is in turn connected to tendons arranged about the periphery of the interconnected cylindrical tanks.

  18. Deepwater Horizon Situation Report #5

    SciTech Connect (OSTI)

    none,

    2010-06-10T23:59:59.000Z

    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/

  19. Evolution of the Macondo Well Blowout: Simulating the Effects of the Circulation and Synthetic Dispersants on the Subsea Oil

    E-Print Network [OSTI]

    Paris-Limouzy, Claire B.

    Dispersants on the Subsea Oil Transport Claire B. Paris,*, Matthieu Le Henaff,, Zachary M. Aman,§ Ajit assessment of the potential effect of the dispersant on the subsea-to-surface oil partition. We adapted blowouts and on gauging the subsea use of synthetic dispersant in mitigating coastal damage. INTRODUCTION

  20. Subsea Solution for Anti-Slug Control of Multiphase Risers* E. Jahanshahi1, S. Skogestad1, M. Lieungh2

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Subsea Solution for Anti-Slug Control of Multiphase Risers* E. Jahanshahi1, S. Skogestad1, M-slug control of multi-phase risers at offshore oil-fields. With new advances in the subsea tech- nology-side valve. However, a subsea choke valve placed at the well-head can not be used for preventing the riser

  1. Microsoft PowerPoint - Deepwater Horizon Containment - 30 JUN...

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

    Deepwater Horizon Containment - 30 JUN.ppt Microsoft PowerPoint - Deepwater Horizon Containment - 30 JUN.ppt Microsoft PowerPoint - Deepwater Horizon Containment - 30 JUN.ppt More...

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

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

    : 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...

  3. Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum...

    Energy Savers [EERE]

    Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Program Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Program The...

  4. 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 Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to:52c8ff988c1 No38e4011f618b NoIllinois: Energy ResourcesDediniDeepwater

  5. ULTRA-DEEPWATER ADVISORY COMMITTEE

    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 Office of Inspector GeneralDepartment of EnergyofProject is on Track |Weatherized|Energy-WaterUDAC2ULTRA-DEEPWATER

  6. The design of a coiled tubing cutter for use in subsea oil drilling applications

    E-Print Network [OSTI]

    Schlegelmilch, Tye (Tye Anthony)

    1999-01-01T23:59:59.000Z

    A cutting device has been developed which can be used in conjunction with Schlumberger's SenTree product line to insure proper disconnect of an offshore system from a subsea wellhead during the testing of the well. Design ...

  7. Recent advances and trends in subsea technologies and seafloor properties characterization

    E-Print Network [OSTI]

    Djikpesse, Hugues

    Following the 2012 SEG Annual Meeting in Las Vegas, the SEG Research Committee sponsored a post-convention research workshop on subsea technologies, in general, and on seafloor characterization in particular. The goal of ...

  8. Limitations of extended reach drilling in deepwater

    E-Print Network [OSTI]

    Akinfenwa, Akinwunmi Adebayo

    2000-01-01T23:59:59.000Z

    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...

  9. RPSEA Phase 2 Final Report: MSDC Electrical System for Deepwater...

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

    the seafloor. It is projected that more subsea production will be moving towards more remote areas (>100 km) from land. In the context of such a trend, the delivery of electric...

  10. Risk assessment of surface vs subsea blowout preventers (bops) on mobile offshore drilling units focusing on riser failure and the use of subsea shear rams

    E-Print Network [OSTI]

    Melendez, Jorge Luis

    2006-08-16T23:59:59.000Z

    The use of a slim, high-pressure drilling riser for surface blowout preventer operations in the deepwater Gulf of Mexico was assessed as an alternative to conventional drilling procedures from floating units. Comparison of the low- and high...

  11. Perception vs. reality in deepwater exploration

    SciTech Connect (OSTI)

    Shanmugam, G. [Mobil Exploration and Producing Technical Center, Dallas, TX (United States)

    1996-09-01T23:59:59.000Z

    The common perception in exploration is that deepwater sands are predominantly a product of turbidity currents, and that submarine-fan models with channel/levee and lobe elements are the norm. The reality, however, is that in many cases, deepwater sands are deposits of sandy debris flows and bottom currents, not turbidity currents. Submarine-fan models with channels and lobes are designed for turbidite-dominated deepwater systems, and therefore, fan models are obsolete for debris-flow deposits. The subject is described here in a discussion that covers: Deepwater processes. How sediments move downslope from the shelf, definitions, and misunderstood effects of high-density turbidity and bottom currents; Submarine fan models, and sequence stratigraphic implications. Limitations of widely used models, and seismic geometries and log motifs. Better calibrations are needed. In the conclusion, the author states a critical need for developing additional models for debris flows, and that research should also focus on developing reliable methods for using seismic geometry and wireline-log motifs to recognize depositional facies. A comprehensive bibliography of published literature on the subject is liberally referenced. In this paper, the term deep water refers to bathyal water depths, i.e., area seaward of the shelf edge, that existed at the time of deposition of reservoir sands; it does not necessarily refer to present-day water depths in offshore examples.

  12. An evaluation of subsea pump technologies that can be used to achieve dual gradient drilling

    E-Print Network [OSTI]

    Oluwadairo, Tolulope

    2009-05-15T23:59:59.000Z

    Dual Gradient Drilling is an exciting technology which promises to solve the current technical hurdles and economic risks of Deepwater Drilling. Several techniques for Dual Gradient Drilling have been proposed to the industry. One such method...

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

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

    Horizon and Nuclear and Radiological Incidents: Common Challenges and Solutions White paper analyzes Deepwater Horizon response, identifies approaches for radiological or...

  14. Accuracy of Distributed Optical Fiber Temperature Sensing for Use in Leak Detection of Subsea Pipelines

    E-Print Network [OSTI]

    Madabhushi, S.; Elshafie, M. Z. E. B.; Haigh, S. K.

    2014-09-25T23:59:59.000Z

    subsea pipeline is shown in figure 1. This oil leak in the Gulf of Mexico was widely publicized and resulted in both environmental damage and losses to the pipeline operator. The need for accurate and reliable leak detection systems is great... which has a lower frequency than the original signal. Similarly the Anti-Stokes component describes backscattered light with higher frequency. Raman scattering can be understood as the absorption or emission of quanta of energy as the material changes...

  15. 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

  16. The Deepwater Horizon oil spill and Miami-Dade County

    E-Print Network [OSTI]

    Jawitz, James W.

    stop oil from leaking, or it will be used until the relief well can be completed. These are stillThe Deepwater Horizon oil spill and Miami-Dade County Issue 8.2 Background On Tuesday, April 20 days later off the coast of Louisiana. The Deepwater Horizon oil spill is now the largest oil spill

  17. Assess Plan Restore DEEPWATER HORIZON OIL SPILL NRDA TRUSTEES

    E-Print Network [OSTI]

    workers. Millions of gallons of oil spill into the Gulf of Mexico. BP agrees to provide $1 billionAssess Plan Restore DEEPWATER HORIZON OIL SPILL NRDA TRUSTEES Early Restoration, Phase III A guide DEEPWATER HORIZON OIL SPILL NATURAL RESOURCE DAMAGE ASSESSMENT TRUSTEES OCTOBER 2014 2 On April 20, 2011

  18. Subsea 7 are pleased to be founding partners along with the Southampton Oceanography Centre (SOC), BP and Transocean in a new and exciting concept giving scientists the opportunity to use

    E-Print Network [OSTI]

    National Oceanography Centre, Southampton

    Subsea 7 are pleased to be founding partners along with the Southampton Oceanography Centre (SOC environment using the latest ROV technology and experimental equipment available. Subsea 7 has agreed current and potential work programmes. Another benefit of this scheme for Subsea 7 and its current

  19. Epifaunal Assemblages on Deep-water Corals in Roatan, Honduras

    E-Print Network [OSTI]

    Lavelle, Katherine

    2012-10-30T23:59:59.000Z

    Deep-water corals provide complex habitat structure for diverse assemblages of invertebrates and fishes. Similar to shallow coral reefs, oyster reefs, and seagrass beds, these complex biogenic structures serve many ecosystem functions: (a) as prey...

  20. 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 ...

  1. 2008 Annual Plan for the Ultra-Deepwater and Unconventional Natural...

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

    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...

  2. 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...

  3. First installation of an electrical submersible pump in a subsea well

    SciTech Connect (OSTI)

    Mendonca, J.E.; Hodge, R.C.; Izetti, R. [Petrobras, Rio de Janeiro (Brazil); Nicholson, A.; Dwiggins, J.L.; Morrison, D.; Cia, M.; Alfano, P.P.

    1995-12-31T23:59:59.000Z

    As offshore oil fields are being developed towards deeper and deeper waters, new technologies are required to curb capital expenditures. In Brazil, where oil consumption is increasing and huge oil fields lie in high water depths, the issue is particularly pressing. Earlier and higher oil production from those oil fields could be attained by the use of Electrical Submersible Pumps (ESP), so far restricted to dry completions. Also longer distances from well to platform would be made practical. For the initial phase of this development, Petrobras worked together with Tronic, Reda, Pirelli, Lasalle, Sade-Vigesa and Cooper. As a result, first-in-the-world ESP installation in a subsea well has been successfully achieved on October/1994 in RJS-221, located at Carapeba Field, Campos Basin, Brazil.

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

    E-Print Network [OSTI]

    Meyers, Steven D.

    #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 explosion occurred on the Deepwater Horizon (DWH) oil drilling platform in the northeastern Gulf of Mexico

  5. Mississippi Canyon 252 Incident NRDA Tier 1 for Deepwater Communities

    E-Print Network [OSTI]

    , and are visible on Google Earth. With 3D seismic data obtained by the oil and gas industry for geophysical Resource Damage Assessment. Each Party reserves its right to produce its own independent interpretation ofcommunities considered sensitive to human impacts, including chemosynthetic, deep-water (aka cold-water) coral

  6. Interlaboratory Analytical Comparison Study to Support Deepwater Horizon

    E-Print Network [OSTI]

    Resource Damage Assessment: Description and Results for Marine Sediment QA10SED01 Michele M. Schantz resource damage assessment (NRDA) in response to the Deepwater Horizon (DWH) oil spill in the Gulf are conducting a natural resource damage assessment (NRDA) to determine what resources have been injured and what

  7. Interlaboratory Analytical Comparison Study to Support Deepwater Horizon

    E-Print Network [OSTI]

    Resource Damage Assessment: Description and Results for Mussel Tissue QA10TIS01 Michele M. Schantz and John resource damage assessment (NRDA) in response to the Deepwater Horizon (DWH) oil spill in the Gulf and state agencies are conducting a natural resource damage assessment (NRDA) to determine what resources

  8. Deepwater Horizon Study Group 3 Environmental Report January 2011

    E-Print Network [OSTI]

    Silver, Whendee

    The Deepwater Horizon oil rig exploded 5,000 feet below the surface of the Gulf of Mexico on April 20, 2010 gallons) of oil had discharged into the Gulf of Mexico by the time the well was capped and sealed July 15 investment in developing environmentally-sensitive cleanup technologies. 1.1 Emulsification of Crude

  9. A case study evaluation of subsea preferential-weld heat-affected-zone corrosion

    SciTech Connect (OSTI)

    Tyson, J.A.G.; Bell, E.R.G.

    1988-06-01T23:59:59.000Z

    Annual subsea inspections of the Murchison field platform's major welded joints indicated that a significant proportion of the welds suffered from preferential corrosion of their heat-affected zones. Only a limited number of joints can be inspected economically each year, and the program is normally biased toward structurally important welds with relatively low predicted fatigue lives. The presence of corrosion grooves considerably modifies the weld stress concentration factors (SCF's) and thus impacts the fatigue rankings and choice of welds for inspection. With only limited inspection data, there was a need to identify the extent of the corrosion problem. This paper discussed parameters studied in an attempt to correlate the spread and severity of the corrosion problem with variances in geometry, metallurgy, and cathodic protection. Correlations were found that enabled the successful prediction of location of further corrosion grooves and allowed a new optimum inspection program based on both fatigue prediction and weld corrosion history. The presence of the corrosion grooves in many cases gives spurious crack-like indications with magnetic particle inspection (MPI). This paper also discusses how alternating current potential difference (ACPD) inspection techniques together with profile-molding techniques were used to eliminate spurious readings and to characterize the grooving shape for detailed fracture-mechanics assessment.

  10. Permanent magnet steam generator

    SciTech Connect (OSTI)

    Gerard, F.; Gerard, F.J.

    1986-09-30T23:59:59.000Z

    This patent describes a system for magnetic heating of a fluid by motor rotation of a permanent magnet rotor adjacent an assembly of ferro-magnetic condensing plate and of copper heat absorber plate with protrusions through the ferro-magnetic condensing plate into an enclosure with the fluid therein and having fluid inlet and fluid outlet. The assembly has a first shaft and a second shaft coaxially spaced therefrom, a respective the motor connected to the outer end of each shaft, and a respective the permanent magnet rotor connected to the inner end of each shaft, adjacent a the heat absorber plate. The improvement described here comprises: the enclosure including a steel boiler with a first the ferro-magnetic condensing plate closing off a first end thereof and a second the ferro-magnetic condensing plate closing off a second end thereof, a the copper heat absorbing plate affixed on each ferro-magnetic plate; means, free of pockets, for promoting turbulent flow of the fluid with uniformly good heat transfer including the protrusion being a plurality of heat sinks, each heat sink of the plurality of heat sinks comprising an integral elongate member with an alternately large diameter and smaller diameter portions regularly spaced therealong. The elongate members through the first the ferro-magnetic condensing plate are coaxially aligned with the elongate members through the second the ferro-magnetic condensing plate.

  11. Effects of the Deepwater Horizon Oil Spill on Pelagic Fish Species of the Gulf of Mexico.

    E-Print Network [OSTI]

    Stieglitz, John Dommerich

    2014-01-01T23:59:59.000Z

    ??The Deepwater Horizon oil spill of 2010 is the largest unintended marine oil spill in history. The point-source location of the spill, below the pelagic… (more)

  12. Royalty break eyed for U. S. deepwater oil, gas

    SciTech Connect (OSTI)

    Not Available

    1992-08-31T23:59:59.000Z

    This paper reports that Sen. Bennett Johnston (D-La.) wants to amend the U.S. omnibus energy bill to waive initial royalties for deepwater production. Johnston recently introduced the bill and is pressing for the bush administration's support. Johnston's bill would defer federal oil and gas royalty on leases in 200 m or more of water until payout of development costs. Producers would pay full royalty if the price of oil topped $34/bbl for 6 months.

  13. Permanent Home Number: Residential Number

    E-Print Network [OSTI]

    Viglas, Anastasios

    Permanent Home Number: Residential Number: Mobile: Please update my contact details. Signature nominated correspondence address as indicated below. Permanent Home Adress Residential Address Other Address (Must not be a PO Box) Residential Address (Must not be a PO Box) Other - Postal/Optional Address

  14. Embedded Model Predictive Control on a PLC Using a Primal-Dual First-Order Method for a Subsea Separation Process

    E-Print Network [OSTI]

    Johansen, Tor Arne

    Embedded Model Predictive Control on a PLC Using a Primal-Dual First-Order Method for a Subsea. Eikrem3 Abstract-- The results of a PLC implementation of embedded Model Predictive Control (MPC to underline its potential. The embedded MPC was implemented on the ABB AC500 PLC, and its performance

  15. Kinematic and Mechanical Reconstruction of Walker Ridge Structures, Deepwater Gulf of Mexico

    E-Print Network [OSTI]

    Majekodunmi, Oluwatosin Eniola

    2011-02-22T23:59:59.000Z

    of the requirements for the degree of MASTER OF SCIENCE December 2009 Major Subject: Geology ? KINEMATIC AND MECHANICAL RECONSTRUCTION OF WALKER RIDGE STRUCTURES, DEEPWATER GULF OF MEXICO ? ? A Thesis OLUWATOSIN ENIOLA MAJEKODUNMI.... Bryant Head of Department, Andreas K. Kronenberg December 2009 Major Subject: Geology iii ABSTRACT Kinematic and Mechanical Reconstruction of Walker Ridge Structures, Deepwater Gulf of Mexico. (December 2009...

  16. DeepwaterHorizonOilSpill DraftPhaseIIEarlyRestorationPlan

    E-Print Network [OSTI]

    ) is a priceless national treasure. Its natural resources ­ water, fish, beaches, reefs, marshes, oil and gas to the resource-dependent economy of the region. While the extent of natural resources impacted by the Deepwater Review Prepared by the Deepwater Horizon Natural Resource Trustees from State of Alabama (Department

  17. 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

  18. Perception vs. reality in deep-water exploration

    SciTech Connect (OSTI)

    Shanmugam, G. [Mobil Exploration & Producing Technical Center, Dallas, TX (United States)

    1996-12-31T23:59:59.000Z

    The common perception in exploration is that deep-water sands are predominantly a product of low- and high-density turbidity currents, and that submarine-fan models with channel/levee and lobe elements are the norm. The reality, however, is that deep-water systems are extremely complex and variable in terms of depositional processes and sand-body geometries. For example, the Bourna Sequence, composed of T{sub a}, T{sub b}, T{sub c}, T{sub d}, and T{sub e} divisions, is believed to be the product of a turbidity current. However, recent core and outcrop studies show that the complete and partial Bouma sequences also can be explained by processes other than turbidity currents, such as sandy debris flows (i.e., {open_quotes}T{sub a}{close_quotes}) and bottom-current reworking (i.e., {open_quotes}T{sub b}, T{sub c} and T{sub d}{close_quotes}). Massive sands are interpreted routinely as high-density turbidites, but the reality is that the term {open_quotes}high-density turbidity current{close_quotes} commonly refers to sandy debris flow in terms of flow theology and sediment-support mechanism. Deep-water sequences in the North Sea, Norwegian Sea, Offshore Gabon, Offshore Nigeria, Gulf of Mexico, and the Ouachita Mountains are generally considered to be turbidite-rich submarine fans. However, the reality is that these sequences are composed predominantly of sandy slumps and debris flows, not turbidites. Fan models are attractive to explorationists because of their predictable sheet-like geometries; however, these simplistic conceptual models are obsolete because they defy reality. Although the turbidite paradigm is alive and well for now in the minds of many sedimentologists and sequence stratigraphers, the turbidites themselves that form the foundation for fan models are becoming an endangered facies!

  19. Perception vs. reality in deep-water exploration

    SciTech Connect (OSTI)

    Shanmugam, G. (Mobil Exploration Producing Technical Center, Dallas, TX (United States))

    1996-01-01T23:59:59.000Z

    The common perception in exploration is that deep-water sands are predominantly a product of low- and high-density turbidity currents, and that submarine-fan models with channel/levee and lobe elements are the norm. The reality, however, is that deep-water systems are extremely complex and variable in terms of depositional processes and sand-body geometries. For example, the Bourna Sequence, composed of T[sub a], T[sub b], T[sub c], T[sub d], and T[sub e] divisions, is believed to be the product of a turbidity current. However, recent core and outcrop studies show that the complete and partial Bouma sequences also can be explained by processes other than turbidity currents, such as sandy debris flows (i.e., [open quotes]T[sub a][close quotes]) and bottom-current reworking (i.e., [open quotes]T[sub b], T[sub c] and T[sub d][close quotes]). Massive sands are interpreted routinely as high-density turbidites, but the reality is that the term [open quotes]high-density turbidity current[close quotes] commonly refers to sandy debris flow in terms of flow theology and sediment-support mechanism. Deep-water sequences in the North Sea, Norwegian Sea, Offshore Gabon, Offshore Nigeria, Gulf of Mexico, and the Ouachita Mountains are generally considered to be turbidite-rich submarine fans. However, the reality is that these sequences are composed predominantly of sandy slumps and debris flows, not turbidites. Fan models are attractive to explorationists because of their predictable sheet-like geometries; however, these simplistic conceptual models are obsolete because they defy reality. Although the turbidite paradigm is alive and well for now in the minds of many sedimentologists and sequence stratigraphers, the turbidites themselves that form the foundation for fan models are becoming an endangered facies

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

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    -2012) and agreed Phase 5 (2013-2016). · 2012 members: Statoil , Norske Shell, Chevron, Suncor , ENI, Total, and BP/5/20134 Environment Metocean Seabed Subsea Riser & Mooring #12;NDP Riser & Mooring Objectives · Development NDP SHELL/NDP* * Test funded by Shell and analysis funded by NDP #12;Understanding VIV phenomenon

  1. 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.

  2. The effects of insulation defects on the corrosion of sub-sea super duplex stainless steel process pipes

    SciTech Connect (OSTI)

    Francis, R.; Irwin, J.; Byrne, G.; Warburton, G. [Weir Materials Ltd., Manchester (United Kingdom)

    1995-10-01T23:59:59.000Z

    There is an increasing use of CRAs (corrosion resistant alloys) for subsea flowlines. These pipes carry corrosive fluids at high temperatures and pressures, and insulation is usually, applied to prevent excessive cooling of the process fluids. The present tests were undertaken to investigate the effect of insulation defects on the susceptibility to localized corrosion of a super duplex stainless steel at different internal temperatures. Four different commercial coating systems were tested, Neoprene, EPDM, Polyurethane and Polyurethane foam. The results show that pitting occurred at an average temperature of 55 C for neoprene and EPDM, and at lower temperatures for the other two coatings. The reasons for this are discussed, and the implications for service applications.

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

    E-Print Network [OSTI]

    Lu, Z.

    2012-01-01T23:59:59.000Z

    of Gulf of Mexico from other historic offshore oil spillsHorizon oil spill in the Gulf of Mexico is the deepest andDeepwater Horizon oil spill in the Gulf of Mexico was one of

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

    E-Print Network [OSTI]

    Lu, Z.

    2012-01-01T23:59:59.000Z

    Horizon oil spill in the Gulf of Mexico is the deepest andof Gulf of Mexico from other historic offshore oil spillsDeepwater Horizon oil spill in the Gulf of Mexico was one of

  5. The Deepwater Horizon Disaster: What Happened and Why

    SciTech Connect (OSTI)

    Horne, Roland N. (Stanford University) [Stanford University

    2011-01-05T23:59:59.000Z

    The Deepwater Horizon disaster was the largest oil spill in US history, and the second largest spill in the world. 11 men lost their lives in the explosion and fire. Although the impacts of the spill were evident to large numbers of people, its causes were harder to see. This lecture will focus on the technical aspects of the events that led to the spill itself: what happened on the rig before, during and after the event, up to the time the rig sank. As with many engineering disasters, the accident was due to a sequence of failures, including both technical systems and procedural issues. Although the causes were complex and interacting, the lecture will focus on four main problems: (1) the failure of the cement and casing seal, (2) the failure to recognize and respond to hydrocarbon flow into the riser, (3) the ignition of hydrocarbons on the rig, and (4) the failure of the blow-out preventer (BOP) to seal the well. The lecture will conclude with some suggestions as to how events such as the Deepwater Horizon disaster can be avoided in the future. (Roland N. Horne is the Thomas Davies Barrow Professor of Earth Sciences at Stanford University, and was the Chairman of Petroleum Engineering from 1995 to 2006. He holds BE, PhD and DSc degrees from the University of Auckland, New Zealand, all in Engineering Science. Horne is a member of the U.S. National Academy of Engineering and is also an Honorary Member of the Society of Petroleum Engineers.)

  6. 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 AND FATE OF THE OIL ---Draft--- Staff Working Paper No. 3 Staff Working Papers are written by the staff of the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling for the use of members

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

    E-Print Network [OSTI]

    Grosell, Martin

    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 drillingStudy: Exposure to crude oil from the Deepwater Horizon disaster causes swimming deficiencies

  8. The 2010 Deepwater Horizon (DH) oil spill in the Gulf of Mexico was unprecedented in both its magnitude --nearly 5

    E-Print Network [OSTI]

    Entekhabi, Dara

    PROBLEM The 2010 Deepwater Horizon (DH) oil spill in the Gulf of Mexico was unprecedented in both of Mexico during the Deepwater Horizon oil spill. This satellite image shows the oil slick off its magnitude -- nearly 5 million barrels of oil spilled over nearly three months -- and its location

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

    SciTech Connect (OSTI)

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

    2011-06-15T23:59:59.000Z

    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.

  10. 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

  11. DeepwaterHorizonOilSpill DraftPhaseIIEarlyRestorationPlan

    E-Print Network [OSTI]

    treasure. Its natural resources ­ water, fish, beaches, reefs, marshes, oil and gas ­ are the economic to the resource-dependent economy of the region. While the extent of natural resources impacted by the Deepwater of food, energy and recreation. The Gulf Coast's unique culture and natural beauty are world

  12. NOAA Technical Memorandum NOS OR&R 42 Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    NOAA Technical Memorandum NOS OR&R 42 Deepwater Horizon Oil Spill: Salt Marsh Oiling Conditions, evaluating, and responding to threats to coastal environments, including oil and chemical spills, releases to prepare for and respond to oil and chemical releases. Determines damage to natural resources from

  13. 5/7/2010 9:22 AM Deepwater Horizon Oil Spill: BP Claims Information

    E-Print Network [OSTI]

    on for subsistence use purposes have been injured, destroyed, or lost by an oil spill incident. Anyone who is the Oil Spill Liability Trust Fund (OSLTF) and how can it be used? · The OSLTF can provide up to $15/7/2010 9:22 AM Deepwater Horizon Oil Spill: BP Claims Information Frequently Asked Questions 1

  14. Disturbance and Recovery of Salt Marsh Arthropod Communities following BP Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    Pennings, Steven C.

    Disturbance and Recovery of Salt Marsh Arthropod Communities following BP Deepwater Horizon Oil of Houston, Houston, Texas, United States of America Abstract Oil spills represent a major environmental.S. Gulf of Mexico is a hub of oil and gas exploration activities that historically have impacted

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

    E-Print Network [OSTI]

    and the Geryonid Crab Chaceon granulatus in Palau W. B. SAUNDERS and LEE C. HASTIE Introduction Deep-water bottom 2TN, Scotland, U.K. ABSTRACT-Time-lapse remote photo sequences at 73-700 m depth off Palau, Western efforts using a submers ible show much promise (Ralston et aI., 1986; Moffitt and ParrishI. In Palau

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

    E-Print Network [OSTI]

    Schubert, Jessica

    2012-07-16T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

    Clement, Prabhakar

    the DH oil spill. Ã? 2013 Elsevier Ltd. All rights reserved. 1. Introduction Understanding the fateChemical fingerprinting of petroleum biomarkers in Deepwater Horizon oil spill samples collected of Civil Engineering, Auburn University, Auburn, AL 36849, USA a r t i c l e i n f o Keywords: BP oil spill

  18. 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, countries worldwide are racing to stake their claim in the Arctic, a new frontier estimated to hold and drilling efforts in the Barents Sea, but also the challenges of harsh weather, darkness, and ice. It also

  19. 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, 2010 shows oil in the Gulf of Mexico, more than 50 miles southeast of Venice on Louisiana's tip sponsored by the National Oceanic and Atmospheric Administration, found that crude oil from the 2010

  20. Deepwater Horizon oil left tuna, other species with heart defects likely to prove fatal

    E-Print Network [OSTI]

    Grosell, Martin

    of crude, young tuna and amberjack, some of the speediest predators in the ocean, developed heart defects in the northern Gulf of Mexico in April 2010. Embryos are highly sensitive, so fragile that it is possible to see population." The study -- "Deepwater Horizon crude oil impacts the developing hearts of large predatory

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

    E-Print Network [OSTI]

    Whitehead, Andrew

    expression in gill tissues of larval and adult fish. These data suggest that heavily weathered crude oil from-seq | toxicogenomics Following the Deepwater Horizon (DWH) drilling disaster on April 20, 2011, in the Gulf of Mexico study monitoring the biological effects of oil exposure on fish resident in Gulf of Mexico coastal marsh

  2. Permanent magnet multipole with adjustable strength

    DOE Patents [OSTI]

    Halbach, Klaus (Berkeley, CA)

    1985-01-01T23:59:59.000Z

    Two or more magnetically soft pole pieces are symmetrically positioned along a longitudinal axis to provide a magnetic field within a space defined by the pole pieces. Two or more permanent magnets are mounted to an external magnetically-soft cylindrical sleeve which rotates to bring the permanent magnets into closer coupling with the pole pieces and thereby adjustably control the field strength of the magnetic field produced in the space defined by the pole pieces. The permanent magnets are preferably formed of rare earth cobalt (REC) material which has a high remanent magnetic field and a strong coercive force. The pole pieces and the permanent magnets have corresponding cylindrical surfaces which are positionable with respect to each other to vary the coupling therebetween. Auxiliary permanent magnets are provided between the pole pieces to provide additional magnetic flux to the magnetic field without saturating the pole pieces.

  3. Gating of Permanent Molds for ALuminum Casting

    SciTech Connect (OSTI)

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

    2004-03-30T23:59:59.000Z

    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. Permanent-magnet multipole with adjustable strength

    DOE Patents [OSTI]

    Halbach, K.

    1982-09-20T23:59:59.000Z

    Two or more magnetically soft pole pieces are symmetrically positioned along a longitudinal axis to provide a magnetic field within a space defined by the pole pieces. Two or more permanent magnets are mounted to an external magnetically-soft cylindrical sleeve which rotates to bring the permanent magnets into closer coupling with the pole pieces and thereby adjustably control the field strength of the magnetic field produced in the space defined by the pole pieces. The permanent magnets are preferably formed of rare earth cobalt (REC) material which has a high remanent magnetic field and a strong coercive force. The pole pieces and the permanent magnets have corresponding cylindrical surfaces which are positionable with respect to each other to vary the coupling there between. Auxiliary permanent magnets are provided between the pole pieces to provide additional magnetic flux to the magnetic field without saturating the pole pieces.

  5. Reservoir compartmentalization of deep-water Intra Qua Iboe sand (Pliocene), Edop field, offshore Nigeria

    SciTech Connect (OSTI)

    Hermance, W.E.; Olaifa, J.O. [Mobile Producing Nigeria, Lagos (Nigeria); Shanmugam, G. [Mobile Research and Development Corp., Dallas, TX (United States)] [and others

    1995-08-01T23:59:59.000Z

    An integration of 3-D seismic and sedimentological information provides a basis for recognizing and mapping individual flow units within the Intra Qua Iboe (IQI) reservoir (Pliocene), Edop Field, offshore Nigeria. Core examination show the following depositional facies: A-Sandy slump/mass flow, B-Muddy slump/mass flow, C. Bottom current reworking. D-Non-channelized turbidity currents, E. Channelized (coalesced) turbidity currents. F-Channelized (isolated) turbidity currents, G-Pelagic/hemipelagic, H-Levee, I-Reworked slope, J-Wave dominated, and K-Tide dominated facies. With the exception of facies J and K, all these facies are of deep-water affinity. The IQI was deposited on an upper slope environment in close proximity to the shelf edge. Through time, as the shelf edge migrated scaward, deposition began with a channel dominated deep-water system (IQI 1 and 2) and progressed through a slump/debris flow dominated deep-water system (IQI 3, the principle reservoir) to a tide and wave dominated shallow-water system (IQI 4). Compositional and textural similarities between the deep-water facies result in similar log motifs. Furthermore, these depositional facies are not readily apparent as distinct seismic facies. Deep-water facies A, D, E, and F are reservoir facies, whereas facies B, C, G, H, and I are non-reservoir facies. However, Facies G is useful as a seismically mappable event throughout the study area. Mapping of these non-reservoir events provides the framework for understanding gross reservoir architecture. This study has resulted in seven defined reservoir units within the IQI, which serves as the architectural framework for ongoing reservoir characterization.

  6. 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

  7. 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-

    2004-01-01T23:59:59.000Z

    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 ...

  8. Prediction of Barrier-Island Inundation and Overwash: Application to the Gulf of Mexico Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    Torgersen, Christian

    Prediction of Barrier-Island Inundation and Overwash: Application to the Gulf of Mexico Deepwater Horizon Oil Spill 0 10.5 Kilometers 0 0.25 0.5 Miles Photo: NOAA Photo: NOAA Low Risk: No inundation

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

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

    Novel Flux Coupling Machine without Permanent Magnets - U Machine Novel Flux Coupling Machine without Permanent Magnets - U Machine 2009 DOE Hydrogen Program and Vehicle...

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

    Energy Savers [EERE]

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

  11. Nonuniform radiation damage in permanent magnet quadrupoles

    SciTech Connect (OSTI)

    Danly, C. R.; Merrill, F. E.; Barlow, D.; Mariam, F. G. [Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)

    2014-08-15T23:59:59.000Z

    We present data that indicate nonuniform magnetization loss due to radiation damage in neodymium-iron-boron Halbach-style permanent magnet quadrupoles. The proton radiography (pRad) facility at Los Alamos uses permanent-magnet quadrupoles for magnifying lenses, and a system recently commissioned at GSI-Darmsdadt uses permanent magnets for its primary lenses. Large fluences of spallation neutrons can be produced in close proximity to these magnets when the proton beam is, intentionally or unintentionally, directed into the tungsten beam collimators; imaging experiments at LANL’s pRad have shown image degradation with these magnetic lenses at proton beam doses lower than those expected to cause damage through radiation-induced reduction of the quadrupole strength alone. We have observed preferential degradation in portions of the permanent magnet quadrupole where the field intensity is highest, resulting in increased high-order multipole components.

  12. Hybrid permanent magnet and variable reluctance generator

    SciTech Connect (OSTI)

    Vaidya, J.; Belanger, D.J.

    1990-09-25T23:59:59.000Z

    This patent describes a hybrid electrical generator. It comprises: a permanent magnet generator having a permanent magnet rotor mounted on a shaft, the permanent magnet generator providing an output voltage over an operating range which falls in response to an increasing electrical load; a variable reluctance generator having a rotor mounted on the shaft with excitation of a stator of the variable reluctance generator being provided from the permanent magnet generator, the variable reluctance generator providing an output voltage which varies in response to an increasing electrical load over an operating range; and a voltage regulator, responsive to combined output voltages of the generators, for controlling the output voltage provided by the variable reluctance generator.

  13. Permanent magnet edge-field quadrupole

    DOE Patents [OSTI]

    Tatchyn, R.O.

    1997-01-21T23:59:59.000Z

    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. 10 figs.

  14. 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.

    2011-01-01T23:59:59.000Z

    impacts. The increasing demand for oil continues to pushthe Gulf ecosystem. Increas- ing demand for oil coupled withtorium on Deepwater Oil Drilling, Demands Environmental

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

    E-Print Network [OSTI]

    Murphy, Daniel Patrick

    2012-07-16T23:59:59.000Z

    Chair of Advisory Committee: Dr. 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...INTERMEDIATE- TO DEEP-WATER CIRCULATION CHANGES ON SHORT AND LONG TIME SCALES A Dissertation by DANIEL PATRICK MURPHY Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

  16. Aeolian Delivery of Organic Matter to a Middle Permian Deepwater Ramp

    E-Print Network [OSTI]

    Artan, Sinem

    2012-07-16T23:59:59.000Z

    -Chairs of Committee, Bruce Herbert Mike Tice Committee Member, Thomas McDonald Head of Department, Andreas Kronenberg May 2011 Major Subject: Geology iii ABSTRACT Aeolian Delivery of Organic Matter to a Middle Permian Deepwater Ramp. (May 2011..., Semra Artan, and my father, Mehmet Ali Artan vi ACKNOWLEDGEMENTS I would like to express my deepest gratitude to my co-advisors, Dr. Bruce Herbert and Dr. Mike Tice, for their time, guidance and advice throughout the course of this research. I...

  17. Response and Rescue Plans for Marine Mammals and Sea Turtles Impacted by the Deepwater Horizon Oil Spill in the Gulf of Mexico

    E-Print Network [OSTI]

    Response and Rescue Plans for Marine Mammals and Sea Turtles Impacted by the Deepwater Horizon Oil Spill in the Gulf of Mexico The Wildlife Branch of the Unified Command has organized trained wildlife that will be impacted by the Deepwater Horizon Oil Spill. The marine mammal and sea turtle response teams include

  18. Assessing the value of 3D post-stack seismic amplitude data in forecasting fluid production from a deepwater Gulf-of-Mexico

    E-Print Network [OSTI]

    Torres-Verdín, Carlos

    a deepwater Gulf-of-Mexico reservoir Maika Gambús-Ordaz and Carlos Torres-Verdín The University of Texas in the deepwater Gulf of Mexico. The availability of measured time records of fluid production and pressure of Mexico, offshore the coast of Louisiana. We pursue two specific objectives: · To quantitatively integrate

  19. 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)

    2011-08-23T23:59:59.000Z

    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.

  20. Performance improvement of permanent magnet ac motors

    E-Print Network [OSTI]

    Parsa, Leila

    2005-08-29T23:59:59.000Z

    .????????????????....????.. 19 B. Background............??..?????.??.?????...?.?.... 20 C. Comparing BLDC Motor and PMSM???????????... 24 D. Harmonic Spectrum of MMF in Machines with Non-sinusoidal Winding Distribution??????????????????.. 26 ix TABLE............................................................................ 58 H. Conclusion??????????????????????. 68 III FAULT TOLERANT OPERATION OF PERMANENT MAGNET MOTOR DRIVES?????????????????????? 69 A. Introduction.????????????????....???.?. 69 B. Fault Tolerant Operation of Five-Phase PMSM...

  1. Removal of a Permanent IVC Filter

    SciTech Connect (OSTI)

    Kumar, Bangalore C. Anil [Queen's Medical Centre, Department of Radiology (United Kingdom)], E-mail: anil.kumar@doctors.org.uk; Chakraverty, Sam; Zealley, Ian [Ninewells Hospital, Department of Radiology (United Kingdom)

    2006-02-15T23:59:59.000Z

    Inferior vena cava (IVC) filters are increasingly used for prevention of life-threatening pulmonary emboli in patients who have contraindications to anticoagulation therapy. We report a case of the removal of a permanent IVC filter, which was inadvertently inserted due to an incorrect ultrasound report.

  2. British Petroleum's Deepwater Horizon Accident and the Thinking, Engaged Workforce - 13265

    SciTech Connect (OSTI)

    Rigot, William L. [Fluor Corporation, Technical Support Services (United States)] [Fluor Corporation, Technical Support Services (United States)

    2013-07-01T23:59:59.000Z

    On April 20, 2010, hydrocarbons escaped from the Macondo well into Transocean's Deepwater Horizon, resulting in fire and multiple explosions. 11 people on the rig died. The billion dollar Deepwater Horizon sank. 4.9 M gallons of product flowed from the well for 87 days creating an environmental nightmare for communities bordering on the Gulf of Mexico. BP established a $20 B reserve to pay for damages. Investigations and legal culpability continue to this day. In September 2010, the Institute for Nuclear Power Operators (INPO) issued Significant Operating Experience Report (SOER) 10-2, Engaged, Thinking Organizations. The industry had experienced 11 events, 9 in US commercial nuclear utilities, and 2 international, that had disturbing trends. The underlying causes highlighted by INPO were inadequate recognition of risk, weaknesses in application of significant operating experience, tolerance of equipment and personnel problems, and a significant drift in standards. While the noted INPO problems and the Deepwater Horizon event appear to have nothing in common, they do exhibit similarities in a drift away from expected behavior on the part of front line workers and their supervisors. At the same time, hidden hazards are accumulating in the environment leading to error intolerant conditions. Without a good understanding of this concept, many organizations tend to focus on the person who 'touched it last', while missing the deeper organizational factors that led that individual to think that what they were doing was correct. An understanding of this failure model is important in reconstruction of events and crafting effective corrective actions. It is much more important, however, for leaders in high hazard industries to recognize when they are approaching error intolerant conditions and take steps immediately to add safety margin. (authors)

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

    SciTech Connect (OSTI)

    Russell E. Fray

    2007-06-30T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Russell E. Fray

    2007-05-31T23:59:59.000Z

    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.

  5. Optimal Current Waveforms for Brushless Permanent Magnet Motors

    E-Print Network [OSTI]

    ;1 Introduction We consider the problem of controlling an AC permanent magnet synchronous motor (PMSM) by choosing

  6. When Do Commercial Reactors Permanently Shut Down?

    Reports and Publications (EIA)

    2011-01-01T23:59:59.000Z

    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.

  7. Permanent magnet design for high-speed superconducting bearings

    DOE Patents [OSTI]

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

    1996-09-10T23:59:59.000Z

    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.

  8. Permanent magnet design for high-speed superconducting bearings

    DOE Patents [OSTI]

    Hull, John R. (5519 S. Bruner, Hinsdale, IL 60521); Uherka, Kenneth L. (830 Ironwood, Frankfort, IL 60423); Abdoud, Robert G. (13 Country Oaks La., Barrington Hills, IL 60010)

    1996-01-01T23:59:59.000Z

    A high temperature superconducting bearing including a permanent magnet rotor levitated by a high temperature superconducting structure. 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. INVESTIGATION OF DEEP-WATER CIRCULATION MODES IN THE EARLY CENOZOIC USING NEODYMIUM ISOTOPES FROM FOSSIL FISH DEBRIS

    E-Print Network [OSTI]

    Jones, Landon 1989-

    2011-05-10T23:59:59.000Z

    The ocean’s deep-water circulation plays a large role in heat transport across the globe. Circulation in the modern begins where cold, dense surface waters of the North Atlantic and Southern oceans sink to form Atlantic Bottom water. However...

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

    E-Print Network [OSTI]

    Grosell, Martin

    approximately 4 million barrels (6 Ã? 108 L) of crude oil into the northern Gulf of Mexico (GoM).1-3 The DWHAcute 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

  11. 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)

    2002-01-01T23:59:59.000Z

    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.

  12. Permanent Magnet Development for Automotive Traction Motors

    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 RankCombustion | Department ofT ib l L d F SSalesOE0000652Grow YourPerformanceFacility ManagersPermanent

  13. Strong permanent magnet-assisted electromagnetic undulator

    DOE Patents [OSTI]

    Halbach, Klaus (Berkeley, CA)

    1988-01-01T23:59:59.000Z

    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.

  14. Deepwater royalty relief product of 3 1/2 year U.S. political effort

    SciTech Connect (OSTI)

    Davis, R.E. [Stuntz and Davis, Washington, DC (United States); Neff, S. [Senate Energy and Natural Resources Committee, Washington, DC (United States)

    1996-04-01T23:59:59.000Z

    Against the backdrop of more than 20 years of increasingly stringent environmental regulation, ever-expanding exploration and development moratoria on the Outer Continental Shelf (OCS), and reductions in producer tax incentives, oil and natural gas exploration companies active in deep waters of the Gulf of Mexico recently won a significant legislative victory. On Nov. 28, 1995, President Clinton signed into law S.395, the Alaska Power Administration Sale Act. Title 3 of S.395 embodies the Outer Continental Shelf Deep Water Royalty Relief Act. This landmark legislation provides substantial incentives for oil and natural gas production in the gulf of Mexico by temporarily eliminating royalties on certain deepwater leases. It is the first direct incentive for oil and gas production enacted at the federal level in many years. This paper reviews the elements used to arrive at this successful legislation including the congressional leadership. It describes debates, cabinet level discussions, and use of parlimentary procedures.

  15. 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.

    2011-06-15T23:59:59.000Z

    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.

  16. 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

    2006-01-01T23:59:59.000Z

    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.

  17. Counterrotating brushless dc permanent magnet motor

    SciTech Connect (OSTI)

    Hawsey, R.A.; Bailey, J.M.

    1990-12-31T23:59:59.000Z

    An brushless DC permanent magnet motor is provided for driving an autonomous underwater vehicle. In one embodiment, the motor comprises four substantially flat stators disposed in stacked relationship, with pairs of the stators being axially spaced and each of the stators comprising a tape-wound stator coil; and a first and second substantially flat rotors disposed between the spaced pairs of stators. Each of the rotors includes an annular array of permanent magnets embedded therein. A first shaft is connected to the first rotor and a second, concentric shaft is connected to the second rotor, and drive unit causes rotation of the two shafts in opposite directions. The second shaft comprises a hollow tube having a central bore therein in which the first shaft is disposed. Two different sets of bearings support the first and second shAfts. In another embodiment, the motor comprises two ironless stators and pairs and rotors mounted no opposite sides of the stators and driven by counterrotating shafts.

  18. Counterrotating brushless dc permanent magnet motor

    SciTech Connect (OSTI)

    Hawsey, R.A.; Bailey, J.M.

    1990-01-01T23:59:59.000Z

    An brushless DC permanent magnet motor is provided for driving an autonomous underwater vehicle. In one embodiment, the motor comprises four substantially flat stators disposed in stacked relationship, with pairs of the stators being axially spaced and each of the stators comprising a tape-wound stator coil; and a first and second substantially flat rotors disposed between the spaced pairs of stators. Each of the rotors includes an annular array of permanent magnets embedded therein. A first shaft is connected to the first rotor and a second, concentric shaft is connected to the second rotor, and drive unit causes rotation of the two shafts in opposite directions. The second shaft comprises a hollow tube having a central bore therein in which the first shaft is disposed. Two different sets of bearings support the first and second shAfts. In another embodiment, the motor comprises two ironless stators and pairs and rotors mounted no opposite sides of the stators and driven by counterrotating shafts.

  19. Stratigraphy and Reservoir-analog Modeling of Upper Miocene Shallow-water and Deep-water Carbonate Deposits: Agua Amarga Basin, Southeast Spain

    E-Print Network [OSTI]

    Dvoretsky, Rachel Ana

    2009-03-10T23:59:59.000Z

    (97.7 x 10 6 m 3 of reservoir pore volume); dispersed-flow deep-water deposits (5.71 x 10 6 m 3 of reservoir pore volume) that are heterogeneous and widespread; focused-flow deep-water deposits (14.6 x 10 6 m 3 of reservoir pore volume... odel).......................136 Apendix IX Dip Angle Maps.........................................................136 Apendix X Porosity Evolution........................................................138 vii List of Figures & Tables Chapter...

  20. A New Class of Switched Reluctance Motors without Permanent Magnets...

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

    A New Class of Switched Reluctance Motors without Permanent Magnets A Segmented Drive Inverter Topology with a Small DC Bus Capacitor A Segmented Drive Inverter Topology with a...

  1. Evaluation of Options for Permanent Geologic Disposal of Spent...

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

    policy decisions regarding strategies for the management and permanent disposal of spent nuclear fuel (SNF) and high-level radioactive waste (HLW) in the United States requiring...

  2. analysis reveals permanent: Topics by E-print Network

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

    Index 21 Design and analysis aspects of radial flux air-cored permanent magnet wind generator system for direct battery charging applications. Open Access Theses and...

  3. Analysis of Mechanically Milled Exchange Coupled Nanocomposite Permanent Magnets.

    E-Print Network [OSTI]

    Mukherjee, Santanu

    2012-01-01T23:59:59.000Z

    ??Nanocomposite permanent magnets have recently evoked wide interest because of their interesting properties. They usually consist of a hard magnetic phase having superior coercivities and… (more)

  4. A New Class of Switched Reluctance Motors without Permanent Magnets

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

    switched reluctance motor benefits: - Low material and fabrication cost - No permanent magnet material * Back-emf and demagnetization is not an issue * Permits operation...

  5. Variable-field permanent magnet dipole

    SciTech Connect (OSTI)

    Barlow, D.B.; Kraus, R.H. Jr.; Meyer, R.E.

    1993-10-01T23:59:59.000Z

    A new concept for a variable-field permanent-magnet dipole (VFPMD) has been designed, fabricated, and tested at Los Alamos. The VFPMD is a C-shaped sector magnet with iron poles separated by a large block of magnet material (SmCo). The central field can be continuously varied from 0.07 T to 0.3 T by moving an iron shunt closer or further away from the back of the magnet. The shunt is specially shaped to make the dependence of the dipole field strength on the shunt position as linear as possible. The dipole has a 2.8 cm high by 8 cm wide aperture with {approximately}10 cm long poles.

  6. Permanent magnet energy conversion machine with magnet mounting arrangement

    DOE Patents [OSTI]

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

    1999-01-01T23:59:59.000Z

    A hybrid permanent magnet dc motor includes three sets of permanent magnets supported by the rotor and three sets of corresponding stators fastened to the surrounding frame. One set of magnets operates across a radial gap with a surrounding radial gap stator, and the other two sets of magnets operate off the respective ends of the rotor across respective axial gaps.

  7. CX-004473: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Subsea Test Tree and Intervention Riser SystemCX(s) Applied: A9, A11Date: 11/18/2010Location(s): Houston, TexasOffice(s): Fossil Energy, National Energy Technology Laboratory

  8. CX-004475: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Subsea Test Tree and Intervention Riser SystemCX(s) Applied: A9, A11Date: 11/18/2010Location(s): Katy, TexasOffice(s): Fossil Energy, National Energy Technology Laboratory

  9. CX-008458: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    More Improvements to Deepwater Subsea Measurement CX(s) Applied: B3.6 Date: 06/14/2012 Location(s): Texas, Louisiana, New York, Oklahoma, Scotland Offices(s): National Energy Technology Laboratory

  10. CX-004474: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Deepwater Subsea Test Tree and Intervention Riser SystemCX(s) Applied: A9, A11Date: 11/18/2010Location(s): Houston, TexasOffice(s): Fossil Energy, National Energy Technology Laboratory

  11. E-Print Network 3.0 - advanced permanent magnet Sample Search...

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

    Collection: Mathematics 74 Optimum Control for Interior Permanent Magnet Synchronous Motors (IPMSM) in Constant Summary: Optimum Control for Interior Permanent Magnet...

  12. Adjustable permanent magnet assembly for NMR and MRI

    DOE Patents [OSTI]

    Pines, Alexander; Paulsen, Jeffrey; Bouchard, Louis S; Blumich, Bernhard

    2013-10-29T23:59:59.000Z

    System and methods for designing and using single-sided magnet assemblies for magnetic resonance imaging (MRI) are disclosed. The single-sided magnet assemblies can include an array of permanent magnets disposed at selected positions. At least one of the permanent magnets can be configured to rotate about an axis of rotation in the range of at least +/-10 degrees and can include a magnetization having a vector component perpendicular to the axis of rotation. The single-sided magnet assemblies can further include a magnet frame that is configured to hold the permanent magnets in place while allowing the at least one of the permanent magnets to rotate about the axis of rotation.

  13. EA-1895: Lolo Creek Permanent Weir Construction near town of...

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

    EA to evaluate the potential environmental impacts of replacing an existing seasonal fish weir with a permanent weir, which would be used to monitor federally-listed Snake River...

  14. Method and apparatus for assembling permanent magnet rotors

    DOE Patents [OSTI]

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

    1999-06-22T23:59:59.000Z

    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. Permanent magnet assisted synchronous reluctance motor, design and performance improvement

    E-Print Network [OSTI]

    Niazi, Peyman

    2006-04-12T23:59:59.000Z

    Recently, permanent magnet assisted (PMa)-synchronous reluctance motors (SynRM) have been considered as a possible alternative motor drive for high performance applications. In order to have an efficient motor drive, performing of three steps...

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

    E-Print Network [OSTI]

    Maher, John, III (John Edward)

    2014-01-01T23:59:59.000Z

    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 ...

  17. Changes in the deep-water benthos of eastern Lake Erie between 1979 and 1993

    SciTech Connect (OSTI)

    Dermott, R.; Kerec, D. [Fisheries and Oceans, Burlington, Ontario (Canada)

    1995-06-01T23:59:59.000Z

    In order to examine changes of the benthic community and benthic biomass as a result of mussel colonization, a survey of the deep-water benthic fauna in eastern Lake Erie was repeated in 1993 using the same sites and methods as in a 1979 survey. During 1979, the community beyond 30 m was dominated by oligochaete worms and the burrowing amphipod Diporeia, which represented 50 and 40% of the total benthic biomass respectively. By 1993, quagga mussels (Dreissena bugensis) formed over 90% of the benthic biomass. Mussels were present at all 13 sites. Densities of individuals >2 mm in length averaged 3,241 mussels m{sup -2}. Of these mussels, 97% were quagga mussels. Total density of all sizes retained on a 180 {mu}m sieve averaged 34,800 mussels m{sup -2} but total biomass decreased from 1.58 to 0.98 g m{sup -2}. The density of the amphipod Diporeia was reduced from 1,844 in 1979 to 218 m{sup -2} in 1993. While present at all sites during 1979, Diporeia remained common only at two sites and were absent at 8 of the 13 sites in 1993. The native fingernail clams, Pisidium spp., were reduced from 327 to 82 m{sup -2}. No significant reduction occurred in the worm and chironomid populations, however the dry biomass of the chironomids was reduced from 0.07 to 0.0008 g m{sup -2}. These reductions may be due to competition with the mussels for freshly settling algae. The meiofauna, which included small nematodes, ostracods, and harpacticoids retained on a 180 {mu}m sieve, all increased in density. Perhaps they benefited from an increase in the detritus deposited as pseudofeces around the mussels.

  18. 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

    2011-01-01T23:59:59.000Z

    Winter 2011 tx H2O 3 or just a drop in thebucket?Texas scientists on the real e#31;ects of the Deepwater Horizon oil spill 4 tx H2O Winter 2011 Environmental Disaster Continued What if gasoline pumped into cars, seafood eaten at restaurants... but forgo#27;en as the wreckage of the Deepwater Horizon MC#31;#30;#31; drilling platform sank into its waters. A crude awakening Like any large oil spill, this one took its toll in many ways. Eleven BP employees on the rig died in the explosion...

  19. 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

  20. 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

  1. 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

  2. UK Oil and Gas Collaborative Doctoral Training Centre (2014 start) Project Title: Evaluating the resilience of deepwater systems to recover from oil spills

    E-Print Network [OSTI]

    Henderson, Gideon

    UK Oil and Gas Collaborative Doctoral Training Centre (2014 start) Project Title: Evaluating the resilience of deepwater systems to recover from oil spills Host institution: Heriot-Watt University Gatliff (BGS), Jeffrey Polton (NOC), Alejandro Gallego and Eileen Bresnan (MSS). Project description: Oil

  3. Forts du succs de l'expdition DeepWater mene le long du Gulf Stream auprintemps2013,l'UniversitdeGenve(UNIGE)etPlanetSolarlancent

    E-Print Network [OSTI]

    Halazonetis, Thanos

    Forts du succès de l'expédition DeepWater menée le long du Gulf Stream auprintemps2013,l rive nord de la baie de Kiladha (Golfe de Nauplie), a été occupée pendant près de 35 000 ans, du

  4. 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.

    Oil Extent From the Deepwater Horizon Oil Spill Using ASCAT Backscatter Richard D. Lindsley, Student Centre for Medium-Range Weather Forecasts (ECMWF) are used to map the spatial extent of oil on the ocean on ocean life and human industries. Active microwave sensors are often used for remote detection of oil

  5. 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.

    offshore oil spill in U.S. history. This spill, which continued for 3 months, presented an unprecedented spills in many ways. Crude oil was introduced at the ocean bottom in 1500 m of water, a depthTrajectory Forecast as a Rapid Response to the Deepwater Horizon Oil Spill Yonggang Liu, Robert H

  6. Shorelines and Coastal Habitats in the Gulf of Mexico The effects of the Deepwater Horizon oil spill on natural resources are dependent on multiple factors

    E-Print Network [OSTI]

    1 April 2010 Shorelines and Coastal Habitats in the Gulf of Mexico FACT SHEET The effects of the Deepwater Horizon oil spill on natural resources are dependent on multiple factors including oil composition, oil quantity, dispersal techniques, and contact with organisms. Broadly speaking, when offshore

  7. Method of making bonded or sintered permanent magnets

    DOE Patents [OSTI]

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

    1993-08-31T23:59:59.000Z

    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.

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

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN)

    2012-02-07T23:59:59.000Z

    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).

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

    DOE Patents [OSTI]

    Hsu, John S.

    2013-03-05T23:59:59.000Z

    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).

  10. 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)

    2014-07-21T23:59:59.000Z

    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.

  11. Permanent magnet flowmeter having improved output terminal means

    DOE Patents [OSTI]

    August, Charles (Darien, IL); Myers, Harry J. (Downers Grove, IL)

    1984-01-01T23:59:59.000Z

    Disclosed is an improved permanent magnet flowmeter capable of withstanding bending stresses in the direction of induced emf signals. The flowmeter includes a unique terminal arrangement integrally formed with the flowmeter by trepanning opposing wall sections of the flowmeter body. The terminal arrangement provides increased flowmeter sensitivity by increasing the strength of the induced emf signals.

  12. Permanent Magnet Ecr Plasma Source With Magnetic Field Optimization

    DOE Patents [OSTI]

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

    2000-12-19T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Bradley K. Griffith

    2011-12-01T23:59:59.000Z

    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.'

  14. SUPER HIGH-SPEED MINIATURIZED PERMANENT MAGNET SYNCHRONOUS MOTOR

    E-Print Network [OSTI]

    Wu, Thomas

    with the design of permanent magnet synchronous motors (PMSM) to operate at super-high speed with high efficiency. The designed and fabricated PMSM was successfully tested to run upto 210,000 rpm The designed PMSM has 2000 W concept of electrical machines. After that, the modeling of PMSM for dynamic simulation is provided

  15. Permanent Magnets Synchronous Machines Faults Detection and Identification

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for permanent magnet synchronous machines (PMSM). Two main faults occurring on these machines are identified of the PMSM is devel- oped and simulated using Matlab Simulink. The model enables simulating nominal and faulty PMSM behavior, with several stages of degradation, and is supported by tests results. Specific

  16. Parameter estimation of permanent magnet stepper motors without mechanical sensors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .1016/j.conengprac.2014.01.015 #12;1. Introduction Permanent Magnet Stepper Motors (PMSM's) are widely used in indus- try for position control, especially in manufacturing applications. PMSM's are more-time adaptation, and fault detection. The estimation of PMSM parameters was studied in (Blauch et al., 1993), 2

  17. 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 ...

  18. Modelling and design of an eddy current coupling for slip-synchronous permanent magnet wind generators.

    E-Print Network [OSTI]

    Mouton, Zac

    2013-01-01T23:59:59.000Z

    ??ENGLISH ABSTRACT: Slip-synchronous permanent magnet generators (SS-PMG) is a recently proposed direct-grid connected direct-drive generator topology for wind power applications. It combines a permanent magnet… (more)

  19. 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 [NETL] [NETL; Hakala, Alexandra [NETL] [NETL; Guthrie, George [NETL] [NETL

    2012-09-30T23:59:59.000Z

    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

  20. Grain Refinement of Permanent Mold Cast Copper Base Alloys

    SciTech Connect (OSTI)

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

    2005-04-01T23:59:59.000Z

    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.

  1. A variable-field permanent-magnet dipole for accelerators

    SciTech Connect (OSTI)

    Kraus, R.H. Jr.; Barlow, D.B.; Meyer, R.

    1992-01-01T23:59:59.000Z

    A new concept for a variable-field permanent-magnet dipole has been developed and fabricated at Los Alamos. The application requires an extremely uniform dipole field in the magnet aperture and precision variability over a large operating range. An iron-core permanent- magnet design using a shunt that was specially shaped to vary the field in a precise and reproducible fashion with shunt position. The key to this design is in the shape of the shunt. The field as a function of shunt position is very linear from 90% of the maximum field to 20% of the minimum field. The shaped shunt also results in a small maximum magnetic force attracting the shunt to the yoke allowing a simple mechanical design. Calculated and measured results agree well for the magnet.

  2. Disc rotors with permanent magnets for brushless DC motor

    SciTech Connect (OSTI)

    Hawsey, Robert A. (Oak Ridge, TN); Bailey, J. Milton (Knoxville, TN)

    1992-01-01T23:59:59.000Z

    A brushless dc permanent magnet motor drives an autonomous underwater vehe. In one embodiment, the motor comprises four substantially flat stators in stacked relationship, with pairs of the stators axially spaced, each of the stators comprising a tape-wound stator coil, and first and second substantially flat rotors disposed between the spaced pairs of stators. Each of the rotors includes an annular array of permanent magnets embedded therein. A first shaft is connected to the first rotor and a second, concentric shaft is connected to the second rotor, and a drive unit causes rotation of the two shafts in opposite directions. The second shaft comprises a hollow tube having a central bore in which the first shaft is disposed. Two different sets of bearings support the first and second shafts. In another embodiment, the motor comprises two ironless stators and pairs of rotors mounted on opposite sides of the stators and driven by counterrotating shafts.

  3. A variable-field permanent-magnet dipole for accelerators

    SciTech Connect (OSTI)

    Kraus, R.H. Jr.; Barlow, D.B.; Meyer, R.

    1992-09-01T23:59:59.000Z

    A new concept for a variable-field permanent-magnet dipole has been developed and fabricated at Los Alamos. The application requires an extremely uniform dipole field in the magnet aperture and precision variability over a large operating range. An iron-core permanent- magnet design using a shunt that was specially shaped to vary the field in a precise and reproducible fashion with shunt position. The key to this design is in the shape of the shunt. The field as a function of shunt position is very linear from 90% of the maximum field to 20% of the minimum field. The shaped shunt also results in a small maximum magnetic force attracting the shunt to the yoke allowing a simple mechanical design. Calculated and measured results agree well for the magnet.

  4. System Cost Analysis for an Interior Permanent Magnet Motor

    SciTech Connect (OSTI)

    Peter Campbell

    2008-08-01T23:59:59.000Z

    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.

  5. Permanent magnet machine with windings having strand transposition

    DOE Patents [OSTI]

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

    2009-04-21T23:59:59.000Z

    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.

  6. Disc rotors with permanent magnets for brushless dc motor

    SciTech Connect (OSTI)

    Hawsey, R.A.; Bailery, J.M.

    1992-05-26T23:59:59.000Z

    This patent describes a brushless dc permanent magnet motor for driving an autonomous underwater vehicle. It comprises first and second substantially flat, generally cylindrical stators disposed in side by side relation; a first substantially flat, generally cylindrical rotor; a first shaft connected to the first rotor and a second, concentric shaft connected to the second rotor; and means for providing rotation of the first and second shafts in opposite directions.

  7. Strong permanent magnets provide a backbone technology required many products, including computers, electric cars, and

    E-Print Network [OSTI]

    McQuade, D. Tyler

    Strong permanent magnets provide a backbone technology required many products, including computers, electric cars, and wind-powered generators. Currently, the strongest permanent magnets contain rare earth for most technologies requiring permanent magnets, due to their high energy product and coercivity. However

  8. Design of Double Salient Interior Permanent Magnet Machine Based on Mutually Coupled

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Design of Double Salient Interior Permanent Magnet Machine Based on Mutually Coupled Reluctance--This paper presents a novel structure of double salient interior permanent magnet machine (DSIPM machine-- double salient, d-axis and q-axis inductances, cogging torque, permanent magnets, flux

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

    SciTech Connect (OSTI)

    None

    2010-02-15T23:59:59.000Z

    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.

  10. 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)

    2007-04-24T23:59:59.000Z

    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.

  11. A strong permanent magnet-assisted electromagnetic undulator

    DOE Patents [OSTI]

    Halbach, K.

    1987-01-30T23:59:59.000Z

    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.

  12. 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 Rank EERE:Year in3.pdfEnergyDepartment ofOil's ImpactAppendix AlEnergy Permanent Magnet Development

  13. Two Permanently Congruent Rods May Have Different Proper Lengths

    E-Print Network [OSTI]

    Moses Fayngold

    2008-07-06T23:59:59.000Z

    We scrutinize congruence as one of the basic definitions of equality in geometry and pit it against physics of Special Relativity. We show that two non-rigid rods permanently kept congruent during their common expansion or compression may have different instantaneous proper lengths (when measured at the same time of their respective reference clocks) if they have different mass distributions over their lengths. Alternatively, their proper lengths can come out equal only when measured at different but strictly correlated moments of time of their respective clocks. The derived expression for the ratio of instantaneous proper lengths of two permanently congruent changing objects explicitly contains information about the objects mass distribution. The same is true for the ratio of readings of the two reference clocks, for which the instantaneous measurements of respective proper lengths produce the same result. In either case the characteristics usually considered as purely kinematic depend on mass distribution, which is a dynamic property. This is a spectacular demonstration of dynamic aspect of geometry already in the framework of Special Relativity.

  14. Interior Permanent Magnet Reluctance Machine with Brushless Field Excitation

    SciTech Connect (OSTI)

    Wiles, R.H.

    2005-10-07T23:59:59.000Z

    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.

  15. Deep-water bottom-current reworked sands: Their recognition and reservoir potential, northern Gulf of Mexico

    SciTech Connect (OSTI)

    Shanmugam, G. (Mobil Research and Development Corp., Dallas, TX (USA)); Spalding, T.D.; Kolb, R.A.; Lockrem, T.M. (Mobil Exploration and Producing Inc., New Orleans, LA (USA))

    1990-05-01T23:59:59.000Z

    Some Pliocene and Pleistocene reservoir sands in intraslope basins of the northern Gulf of Mexico exhibit features that are interpreted to be indicative of reworking by deep-water (bathyal) bottom currents (contour currents). These fine sands have previously been interpreted as turbidites associated with levee overbanks and lobes of submarine fan complexes; however, sedimentological features characteristic of turbidites are rare in these laminated sands. Common features observed are (1) numerous (up to 75 layers/m) thin (<2 cm) sand layers, (2) sharp upper contacts, (3) inverse grading, (4) current ripples, (5) lenticular bedding, (6) flaser bedding, (7) bidirectional cross-lamination, and (8) sigmoidal bed forms with mud drapes (i.e., mud offshoots). These features, dominated by traction structures, can be explained by reworking of overbank turbidite sands by deep-bottom currents. In the present Gulf of Mexico, the surface Loop Current is considered to be a major cause of deep circulation. The authors propose that similar bottom currents and perhaps minor deep tidal currents existed during Pliocene and Pleistocene times. The entire sediment package may be thick and continuous, but individual sand layers within the package are thin and discontinuous. Porosity values of these sands range from 27 to 40%, and permeability ranges from 100 to 2,000 md at 200 psi. In seismic profiles or seismic facies maps, it is difficult to distinguish the reworked sands from turbidites. Therefore, geologic models based on core and process sedimentology are the key to a better understanding of these often misinterpreted complex reservoir facies.

  16. E-Print Network 3.0 - adjustable permanent quadrupoles Sample...

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

    developed on a dedicated beam line at RARAF... . The permanent quadrupole lenses (STI Optronics, Inc., Bellevue, WA) form a double triplet Russian quadrupole... by a fine...

  17. Experimental analysis of variable capacity heat pump system equipped with vapour injection and permanent magnet motor.

    E-Print Network [OSTI]

    Awan, Umer Khalid

    2012-01-01T23:59:59.000Z

    ?? This study analyzes the performance of variable capacity heat pump scroll compressor which is equipped with vapour injection and permanent magnet motor. Refrigerant used… (more)

  18. Design Assessments of a Magnetic-geared Double-rotor Permanent Magnet Generator.

    E-Print Network [OSTI]

    Chung, He-Yu

    2013-01-01T23:59:59.000Z

    ??The purpose of this research is to provide systematic design of a permanent magnet (PM) generator, by adopting the double-rotor and the coaxial magnetic gear… (more)

  19. Calculations on permanent-magnet quadrupoles with nonrectangular cross section

    SciTech Connect (OSTI)

    Boicourt, G.P.; Merson, J.L.

    1988-01-01T23:59:59.000Z

    The current trend toward higher frequencies to power drift-tube linacs (DTLs) and coupled-cavity linacs (CCLs) reduces the space available for quadrupole focusing magnets. Similarly, the space available for matching sections between linac sections is limited, and often the matching section bunchers are designed in odd shapes to make them fit. This shaping further restricts focusing magnet space. One approach to attaining sufficient quadrupole strength is such situations is to use rare-earth permanent-magnet quadrupoles (PMQs) with cross sections tailored to fill as much of the available space as possible. In this paper, we describe some techniques we have developed to calculate the properties of such magnets both singly and when other magnets are nearby. 3 refs., 4 figs.

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

    SciTech Connect (OSTI)

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

    2006-09-30T23:59:59.000Z

    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

  1. A PERMANENT A PERMANENT

    E-Print Network [OSTI]

    McGraw, Kevin J.

    of study to creating student-led "Changemaker Central" locations to drive impactful social innovation

  2. Control strategy of a variable speed wind turbine with multipole permanent magnet synchronous generator

    E-Print Network [OSTI]

    values. Keywords: permanent magnet synchronous generator, variable speed wind turbine, direct driven wind). A multipole synchronous generator connected to a power converter can operate at low speeds, so that a gear canControl strategy of a variable speed wind turbine with multipole permanent magnet synchronous

  3. 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)

    1990-01-01T23:59:59.000Z

    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.

  4. Permanent-magnet helicon sources and arrays: a new type of rf plasma Francis F. Chena)

    E-Print Network [OSTI]

    Chen, Francis F.

    Permanent-magnet helicon sources and arrays: a new type of rf plasma Francis F. Chena) and Humberto mechanism of RF coupling. However, the requirement of a dc magnetic field has prevented their wide acceptance in industry. The use of permanent magnets greatly simplifies helicon sources, and arrays of small

  5. MULTI-WATT ELECTRIC POWER FROM A MICROFABRICATED PERMANENT-MAGNET GENERATOR

    E-Print Network [OSTI]

    MULTI-WATT ELECTRIC POWER FROM A MICROFABRICATED PERMANENT-MAGNET GENERATOR S. Das1 , D. P. Arnold2 presents the design, fabrication, and characterization of permanent-magnet (PM) generators for use, coupled to a transformer and rectifier, delivers 1.1 W of DC electrical power to a resistive load

  6. Permanent-magnet helicon sources and arrays: A new type of rf plasmaa... Francis F. Chenb

    E-Print Network [OSTI]

    Chen, Francis F.

    Permanent-magnet helicon sources and arrays: A new type of rf plasmaa... Francis F. Chenb mechanism of rf coupling. However, the requirement of a dc magnetic field has prevented their wide acceptance in industry. The use of permanent magnets greatly simplifies helicon sources, and arrays of small

  7. Selecting the appropriate input data set when configuring a permanent workforce

    E-Print Network [OSTI]

    Bard, Jonathan

    of new personnel planning and scheduling problems for management. With over 70% of the global workforceSelecting the appropriate input data set when configuring a permanent workforce Jonathan F. Bard to use when running a scheduling model to select a permanent workforce for a service facility. Because

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

    E-Print Network [OSTI]

    Paderborn, Universität

    }@lea.upb.de Abstract--The permanent magnet synchronous motor (PMSM) is widely used in highly utilised automotive-based magnet temperature determination methods in PMSM. In this context, the existing publications can field. Keywords--PMSM, permanent magnet temperature, model- based real-time determination, motor control

  9. Biointrusion test plan for the Permanent Isolation Surface Barrier Prototype

    SciTech Connect (OSTI)

    Link, S.O.; Cadwell, L.L.; Brandt, C.A.; Downs, J.L.; Rossi, R.E.; Gee, G.W.

    1994-04-01T23:59:59.000Z

    This document provides a testing and monitoring plan for the biological component of the prototype barrier slated for construction at the Hanford Site. The prototype barrier is an aboveground structure engineered to demonstrate the basic features of an earthen cover system. It is designed to permanently isolate waste from the biosphere. The features of the barrier include multiple layers of soil and rock materials and a low-permeability asphalt sublayer. The surface of the barrier consists of silt loam soil, covered 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 barrier over the next several years to evaluate barrier performance under extreme climatic conditions. Plants and animals will play a significant role in the hydrologic and water and wind erosion characteristics of the prototype barrier. Studies on the biological component of the prototype barrier will include work on the initial revegetation of the surface, continued monitoring of the developing plant community, rooting depth and dispersion in the context of biointrusion potential, the role of plants in the hydrology of the surface and toe regions of the barrier, the role of plants in stabilizing the surface against water and wind erosion, and the role of burrowing animals in the hydrology and water and wind erosion of the barrier.

  10. Vertical Glider Robots for Subsea Equipment Delivery

    E-Print Network [OSTI]

    Reed, Brooks L.

    2011-01-01T23:59:59.000Z

    We have developed an underwater vehicle that offers significant performance improvements over existing sub sea elevators. Our Vertical Glider Robot falls under its own weight to a precise location on the seafloor, employing ...

  11. Design of subsea energy storage chamber

    E-Print Network [OSTI]

    Greenlee, Alison S

    2009-01-01T23:59:59.000Z

    Energy generated from offshore resources is not reliable over short periods of time. Although wind and wave energy is fairly consistent in the long run, their short term capacity fluctuations prohibit these resources from ...

  12. 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-

    2001-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Izzo, Richard P

    1997-01-01T23:59:59.000Z

    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...

  14. Study of permanent deformation mechanism in asphalt mixes in relation to microcrack growth

    E-Print Network [OSTI]

    Bhairampally, Rajesh Kumar

    1998-01-01T23:59:59.000Z

    Recent developments by Lytton et al. (1998) indicate phics. that the growth of micrographs in asphalt layers under repeated loading is also a cause for the accumulation of permanent deformation or rutting in pavements besides the plastic strain...

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

    E-Print Network [OSTI]

    Arispe, Sergio Adrian

    2003-01-01T23:59:59.000Z

    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...

  16. The overview and history of permanent magnet devices in accelerator technology

    SciTech Connect (OSTI)

    Kraus, R.H. Jr.

    1993-10-01T23:59:59.000Z

    This paper reviews the early history of accelerator development with a particular focus on the important discoveries that opened the door for the application of permanent-magnet materials to this area of science. Researchers began to use permanent-magnet materials in particle accelerators soon after the invention of the alternating gradient principle, that showed magnetic fields could be used to control the transverse envelope of charged-particle beams. Since that time, permanent-magnet materials have found wide application in the modern charged particle accelerator. The history of permanent-magnet use in accelerator physics and technology is outlined, general design considerations are presented, and material properties of concern for particle accelerator applications are discussed.

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

    E-Print Network [OSTI]

    Rucker, Jonathan E. (Jonathan Estill)

    2005-01-01T23:59:59.000Z

    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 ...

  18. Dual Functional Polyelectrolyte Multilayer Coatings for Implants: Permanent Microbicidal Base with Controlled Release of Therapeutic Agents

    E-Print Network [OSTI]

    Wong, Sze Yinn

    Here we present a new bifunctional layer-by-layer (LbL) construct made by combining a permanent microbicidal polyelectrolyte multilayered (PEM) base film with a hydrolytically degradable PEM top film that offers controlled ...

  19. 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 ...

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

    E-Print Network [OSTI]

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

    2007-01-01T23:59:59.000Z

    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 ...

  1. Vibration sensors utilizing fiber fabry-perot interferometers and permanent magnets

    E-Print Network [OSTI]

    Conkey, Andrew P.

    2009-05-15T23:59:59.000Z

    A unique set of vibration sensors was designed that incorporate the fiber Fabry-Perot interferometer (FFPI) and permanent magnets. Feasibility of the design and its advantages over traditional sensors were verified by experiments. The new sensors...

  2. 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.

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

    E-Print Network [OSTI]

    Zavvos, Aristeidis

    2013-11-28T23:59:59.000Z

    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 ...

  4. P h y s i c a l O c e a n o g r a p h y D i v i s i o n Monitoring of the Gulf of Mexico Conditions during the Deepwater

    E-Print Network [OSTI]

    to the ocean conditions during the oil spill. Upper left: Altimetry-derived Gulf of Mexico surface currentsP h y s i c a l O c e a n o g r a p h y D i v i s i o n Monitoring of the Gulf of Mexico Conditions during the Deepwater Horizon Oil Spill An AOML - wide effort As part of NOAA's mission to study the role

  5. P h y s i c a l O c e a n o g r a p h y D i v i s i o n Monitoring the Gulf of Mexico Conditions during the Deepwater

    E-Print Network [OSTI]

    P h y s i c a l O c e a n o g r a p h y D i v i s i o n Monitoring the Gulf of Mexico Conditions during the Deepwater Horizon Oil Spill An AOML - wide effort As part of NOAA's mission to study the role research cruises focused on assessing the extent of the spill in the greater Gulf of Mexico

  6. Rotational and magnetic shunt permanent magnet quadrupoles with variable magnetic strength

    SciTech Connect (OSTI)

    Vladimir Kashikhin et al.

    2002-03-28T23:59:59.000Z

    Next Linear Collider (NLC) and Very Large Hadron Collider (VLHC) projects suppose to use permanent magnets as bending, focusing and correcting elements. Prototypes of two permanent magnet quadrupoles with variable strength were built and successfully tested in Fermilab. Quadrupoles have 12.7 mm aperture diameter, 100 T/m gradient with an adjustment range of 0 to -20%. Special designs provide high precision magnetic center stability during strength change. SmCo5 permanent magnet bricks were used in these prototypes. Rotational quadrupole consists of four sections. Two central sections are rotated in counter directions to adjust the strength. Magnetic shunt quadrupole design provides variable shunting of the magnetic flux. The numerical simulation, designs, measuring results are described.

  7. National Museum of Natural History. Since this permanent exhibit opened in 2008, more than 15 million people have visited. The team won the Depart-

    E-Print Network [OSTI]

    - sea animals were brought to the surface without harming their eyes, using light-tight, pressurized be connected to the Deepwater Horizon Oil Spill. OER continues to be involved in damage assessment and long in 2010 to obtain early and valuable data about the potential advance of oil and dispersants and to assess

  8. LEGAL BUSINESS NAME AND DBA NAME (as applicable) PERSON OR SOLE PROPRIETOR -ENTER FULL NAME HERE (Last, First) (REQUIRED) PERMANENT BUSINESS Address-(number & Street or P.O. Box) (REQUIRED) PERMANENT REMITTANCE Address (if different from Business Address)

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    LEGAL BUSINESS NAME AND DBA NAME (as applicable) PERSON OR SOLE PROPRIETOR -ENTER FULL NAME HERE (Last, First) (REQUIRED) PERMANENT BUSINESS Address- (number & Street or P.O. Box) (REQUIRED) PERMANENT REMITTANCE Address (if different from Business Address) (OPTIONAL) CAMPUS MAIL STOP (Complete ONLY after

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

    DOE Patents [OSTI]

    Sriram, T.V.

    1998-04-14T23:59:59.000Z

    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.

  10. Author's personal copy Mapping and characterization of non-polar permanent shadows on the lunar surface

    E-Print Network [OSTI]

    Spudis, Paul D.

    as close to the equator as ±58° of latitude. These results were obtained through application of a ray. Each permanent shadow on the equator side of ±65° of latitude is shown in detail. Surface brightness Mapping Spectrometer (VIMS), the Deep Impact High-Resolution Instru- ment-IR spectrometer (HRI

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

    E-Print Network [OSTI]

    Paderborn, Universität

    Control Realization for an Interior Permanent Magnet Synchronous Motor (IPMSM) in Automotive Drive Trains Wilhelm Peters, Tobias Huber, Joachim Böcker Power Electronics and Electrical Drives, Paderborn automotive traction drives are a wide speed range, a wide constant-power operation range and high efficiency

  12. Helix-Sense Selective Polymerization of Carbodiimides: Building Permanently Optically Active Polymers from Achiral Monomers

    E-Print Network [OSTI]

    Helix-Sense Selective Polymerization of Carbodiimides: Building Permanently Optically Active polymerizations of achiral monomers using chiral catalysts.8 For this approach to be viable, the helical the polymerization of achiral carbodiimides with optically active catalysts to yield stable helical materials

  13. 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

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

    E-Print Network [OSTI]

    Szabados, Barna

    performance torque control. Advanced high speed salient-pole synchronous machine drives use vector control 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

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

    E-Print Network [OSTI]

    with a `leaky' carbon sequestration reservoir, we argue that this is an issue that applies to just about all that the value of relatively deep ocean carbon sequestration can be nearly equivalent to permanent sequestration gases using carbon sequestration technologies (Herzog et al., 2000; Herzog, 2001) is being proposed

  16. RESOLUTION TO APPROVE A PROPOSAL TO ESTABLISH A MNOA ASSESSMENT COMMITTEE AS A PERMANENT

    E-Print Network [OSTI]

    and uses for assessment of student learning at Mnoa. c) Review assessment resource needs and recommendRESOLUTION TO APPROVE A PROPOSAL TO ESTABLISH A MNOA ASSESSMENT COMMITTEE AS A PERMANENT COMMITTEE OF THE MANOA FACULTY SENATE (January 21, 2009) WHEREAS the purpose of the Mnoa Assessment Committee (MAC

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

    DOE Patents [OSTI]

    Sriram, Tillasthanam V. (Carmel, IN)

    1998-01-01T23:59:59.000Z

    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. Permanent Closure of MFC Biodiesel Underground Storage Tank 99ANL00013

    SciTech Connect (OSTI)

    Kerry L. Nisson

    2012-10-01T23:59:59.000Z

    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.”

  19. 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)

    2011-09-13T23:59:59.000Z

    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.

  20. Pulsating Torque Reduction for Permanent Magnet Bojan Grcar, Peter Cafuta, Gorazd Stumberger

    E-Print Network [OSTI]

    Stankoviæ, Aleksandar

    vibration and acoustic noise which may be even amplified in variable speed drives when the torque frequencyPulsating Torque Reduction for Permanent Magnet AC Motors Bojan Grcar, Peter Cafuta, Gorazd motors are discussed in the paper. The pulsation torque is a consequence of the non-sinusoidal flux

  1. Origin and Phylogeny of Microbes Living in Permanent Antarctic Lake Ice

    E-Print Network [OSTI]

    Priscu, John C.

    Origin and Phylogeny of Microbes Living in Permanent Antarctic Lake Ice D. A. Gordon,1, * J. Priscu of bacteria and cyanobacteria colonizing sediment particles in the per- manent ice cover of an Antarctic lake collected from a depth of 2.5 m in the 4-m-thick ice cover of Lake Bonney, McMurdo Dry Valleys, Antarctica

  2. Aprovaci de l'oferta de formaci permanent del curs 2013-14 (cursos pendents)

    E-Print Network [OSTI]

    Yannuzzi Sanchez, Marcelo

    de juliol de 2014 #12;PROGRAMES DE FORMACI� PERMANENT DE POSTGRAU. CURS 2013-14. ARQUITECTURA Edició Lloc d'impartició Aprovació Arquitectura del Paisatge Departament d'Urbanisme i Ordenació del Territori 31 Barcelona CG 58/7 2013 Arquitectura i Medi Ambient: Integració d'Energies Renovables a l'Arquitectura

  3. OFERTA DE PROGRAMES DE FORMACI PERMANENT DEL CURS ACADMIC 2011/12

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    OFERTA DE PROGRAMES DE FORMACI� PERMANENT CURS 2011-12 ARQUITECTURA, EDIFICACI� I URBANISME Màster Nom'impartició Arquitectura del Paisatge * Departament d'Urbanisme i Ordenació del Territori 29 Barcelona i Milà Arquitectura i Medi Ambient: Integració d'Energies Renovables a l'Arquitectura * Departament de Construccions

  4. Permanence Discounting for Land-Based Carbon Sequestration Man-Keun Kim

    E-Print Network [OSTI]

    McCarl, Bruce A.

    Permanence Discounting for Land-Based Carbon Sequestration By Man-Keun Kim Post Doctoral Fellow Discounting for Land-Based Carbon Sequestration 1. Introduction Land-based soil carbon sequestration has been explored the potential of land-based carbon sequestration strategies in the US such as afforestation

  5. Mercury, Methylmercury, and Other Constituents in Sediment and Water from Seasonal and Permanent

    E-Print Network [OSTI]

    Wetlands in the Cache Creek Settling Basin and Yolo Bypass, Yolo County, California, 2005-06 Open File Creek Settling Basin and Yolo Bypass, Yolo County, California, 2005-06 By Mark Marvin and permanent wetlands in the Cache Creek Settling Basin and Yolo Bypass, Yolo County, California, 2005-06: U

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

    E-Print Network [OSTI]

    Spudis, Paul D.

    Planetology: Solid Surface Planets: Remote sensing; 6250 Planetology: Solar System Objects: Moon (1221, such as the floors of impact craters, may be in permanent shadow, whilst high areas may receive near constant solar. A second data set that exists is topography derived from stereo analysis of Clementine UVVIS images [Cook

  7. Design of optimal digital controller for stable super-high-speed permanent-magnet synchronous

    E-Print Network [OSTI]

    Wu, Thomas

    collaborative design scheme of a super-high-speed permanent-magnet synchronous motor (PMSM) and its digital stability and performance. Since the systematic design of the PMSM can ensure its stability over the full the efficiency and performance of the PMSM. The unique feature in the proposed optimal V/f control is its design

  8. Multi-criteria based design approach of multiphase permanent magnet low speed synchronous machines

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    dedicated to multiphase Permanent Magnet Synchronous Machines (PMSM) supplied by Pulse Width Modulation to use PWM VSI for supplying high power propulsion machines [1]. The induction machines and the PMSM can be easily considered in this instance since the constraint on the reactive power does not apply [2]. PMSM

  9. A Robust Hybrid Current Control for Permanent Magnet Synchronous Motor Drive

    E-Print Network [OSTI]

    Boyer, Edmond

    --Recently, the Permanent Magnet Synchronous Motor (PMSM) find a widespread utilization in modern adjustable AC drives. Comparisons using simulations on a 0.9-kW PMSM confirm that the proposed hybrid current controller gives of the stator current, obtained by using a fast Fourier transform, are used for comparison purposes. Index Terms--PMSM

  10. Abstract--Linear electrical loading system (LELS) driven by electrical cylinder with permanent magnet synchronous

    E-Print Network [OSTI]

    Yao, Bin

    magnet synchronous motor (PMSM) offers several advantages of high transmission efficiency and high cylinder driven by permanent magnet synchronous motor (PMSM). Though direct-drive linear motors has some to direct-drive linear motor, the solution of electrical cylinder with PMSM has larger output force

  11. Direct torque control of permanent magnet synchronous motors with non-sinusoidal back-EMF

    E-Print Network [OSTI]

    Ozturk, Salih Baris

    2009-05-15T23:59:59.000Z

    torque control of permanent magnet synchronous motor (PMSM) with sinusoidal back-EMF is discussed in detail. Secondly, the proposed two-phase conduction mode for DTC of BLDC motors is introduced in the constant torque region. In this control scheme, only...

  12. Parameter estimation of permanent magnet stepper motors without position or velocity sensors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    theory I. INTRODUCTION Permanent Magnet Stepper Motors (PMSM's) are widely used in industry for position control, especially in manu- facturing applications. PMSM's are more robust than brush DC motors the question of parameter identification without position or velocity sensors. The es- timation of PMSM

  13. 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.

    motor of a hybrid electric vehicle. I. INTRODUCTION The interior permanent magnet synchronous motor for application in a hybrid electric vehicle. The BFE structure enables the motor to control the magnitude Permanent Magnet Synchronous Motor with Brushless Field Excitation Seong Taek Lee1,2 , Timothy A. Burress1

  14. ''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

    2001-12-14T23:59:59.000Z

    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.

  15. 296 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 57, NO. 1, JANUARY 2010 Very-High-Speed Slotless Permanent-Magnet

    E-Print Network [OSTI]

    Psaltis, Demetri

    cell compressor [9]), machining industry (machine tool [10], micromachining), home appliance industry-High-Speed Slotless Permanent-Magnet Motors: Analytical Modeling, Optimization, Design, and Torque Measurement Methods-high-speed (VHS) slotless permanent-magnet motor design procedure using an analytical model. The model is used

  16. Combinatorial exploration of rare-earth-free permanent magnets: Magnetic and microstructural properties of Fe-Co-W thin films

    E-Print Network [OSTI]

    Rubloff, Gary W.

    at least one rare earth element such as Nd, Sm, Tb, or Pr.1­3 However, rare-earth elements are increasCombinatorial exploration of rare-earth-free permanent magnets: Magnetic and microstructural://apl.aip.org/about/rights_and_permissions #12;Combinatorial exploration of rare-earth-free permanent magnets: Magnetic and microstructural

  17. Bulk SmCo5/a-Fe nanocomposite permanent magnets fabricated by mould-free Joule-heating compaction

    E-Print Network [OSTI]

    Liu, J. Ping

    Bulk SmCo5/a-Fe nanocomposite permanent magnets fabricated by mould-free Joule-heating compaction and soft magnetic phases.1­3 The prerequisite for effective exchange coupling is a small grain size, which are used to produce single-phase microcrystalline permanent magnets, are ineffective in producing

  18. Legal Business Name and DBA Name (as applicable) Permanent Business Address (number & street or P.O. Box) (Required)

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Legal Business Name and DBA Name (as applicable) Permanent Business Address (number & street or P) Permanent Remittance (Address (if different from Business Address) (Required) City, State and Zip code Email, Santa Cruz Payee Setup Request (204) Required in lieu of IRS W-9 when doing business with the State

  19. DEMOCRACY IN THE MUSEUM. THE FOUNDATION AND PERMANENT EXHIBITION OF THE MUSEO ADOLFO SUREZ Y LA TRANSICIN

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 DEMOCRACY IN THE MUSEUM. THE FOUNDATION AND PERMANENT EXHIBITION OF THE MUSEO ADOLFO SUÁREZ Y LA TRANSICI�N Jurek Sehrt, Museum of Film and Television in Berlin E-mail: js@sehrt.de Tobias Reckling article: Reckling, T. & Sehrt, J. (2013), `Democracy in the Museum. The foundation and permanent

  20. 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.

    2013-10-01T23:59:59.000Z

    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.

  1. A safety and regulatory assessment of generic BWR and PWR permanently shutdown nuclear power plants

    SciTech Connect (OSTI)

    Travis, R.J.; Davis, R.E.; Grove, E.J.; Azarm, M.A. [Brookhaven National Lab., Upton, NY (United States)

    1997-08-01T23:59:59.000Z

    The long-term availability of less expensive power and the increasing plant modification and maintenance costs have caused some utilities to re-examine the economics of nuclear power. As a result, several utilities have opted to permanently shutdown their plants. Each licensee of these permanently shutdown (PSD) plants has submitted plant-specific exemption requests for those regulations that they believe are no longer applicable to their facility. This report presents a regulatory assessment for generic BWR and PWR plants that have permanently ceased operation in support of NRC rulemaking activities in this area. After the reactor vessel is defueled, the traditional accident sequences that dominate the operating plant risk are no longer applicable. The remaining source of public risk is associated with the accidents that involve the spent fuel. Previous studies have indicated that complete spent fuel pool drainage is an accident of potential concern. Certain combinations of spent fuel storage configurations and decay times, could cause freshly discharged fuel assemblies to self heat to a temperature where the self sustained oxidation of the zircaloy fuel cladding may cause cladding failure. This study has defined four spent fuel configurations which encompass all of the anticipated spent fuel characteristics and storage modes following permanent shutdown. A representative accident sequence was chosen for each configuration. Consequence analyses were performed using these sequences to estimate onsite and boundary doses, population doses and economic costs. A list of candidate regulations was identified from a screening of 10 CFR Parts 0 to 199. The continued applicability of each regulation was assessed within the context of each spent fuel storage configuration and the results of the consequence analyses.

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

    SciTech Connect (OSTI)

    Fasoyinu, Yemi [CanmetMATERIALS] [CanmetMATERIALS

    2014-03-31T23:59:59.000Z

    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.

  3. The use of a permanent magnet for water content measurements ofwood chips

    SciTech Connect (OSTI)

    Barale, P.J.; Fong, C.G.; Green, M.A.; Luft, P.A.; McInturff,A.D.; Reimer, J.A.; Yahnke, M.

    2001-09-20T23:59:59.000Z

    The Lawrence Berkeley National Laboratory has developed a device that measures the water content of wood chips, pulp and brown stock for the paper industry. This device employs a permanent magnet as the central part of a NMR measurement system. This report describes the magnet and the NMR measurement system. The results of water content measurements in wood chips in a magnetic field of 0.47 T are presented.

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

    E-Print Network [OSTI]

    Shayak Bhattacharjee

    2015-01-17T23:59:59.000Z

    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.

  5. Estimation of Saturation of Permanent-Magnet Synchronous Motors Through an Energy-Based Model

    E-Print Network [OSTI]

    Jebai, AlKassem; Martin, Philippe; Rouchon, Pierre

    2011-01-01T23:59:59.000Z

    We propose a parametric model of the saturated Permanent-Magnet Synchronous Motor (PMSM) together with an estimation method of the magnetic parameters. The model is based on an energy function which simply encompasses the saturation effects. Injection of fast-varying pulsating voltages and measurements of the resulting current ripples then permit to identify the magnetic parameters by linear least squares. Experimental results on a surface-mounted PMSM and an interoir magnet PMSM illustrate the relevance of the approach.

  6. Design of a high power density, permanent magnet, axial gap dc motor

    SciTech Connect (OSTI)

    Hawsey, R.A.; Daniel, D.S.; Thomas, R.J. (Oak Ridge National Lab., TN (USA)); Bailey, J.M. (Tennessee Univ., Knoxville, TN (USA))

    1990-01-01T23:59:59.000Z

    In the design of drive motors for undersea vehicles, the premium placed on noise suppression suggests the use of a brush-commutated dc motor. The additional constraints of weight and volume, as well as unusual configuration, presents the axial air-gap configuration, with a permanent magnet field, as a viable candidate. In such a configuration the design of the brushes and commutator and the resulting structure becomes critical. The report describes a novel solution to this problem. The basic motor consists of two discs containing permanent magnets on either side of a magnetic structure containing the copper windings. An advantage of this motor concept is that copper cooling may easily be accomplished through the use of liquid circulating through the stator windings. The role of field and armature in a conventional disc motor configuration are reversed. The two discs containing the permanent magnets are rotating. The brushes are on the discs. The magnetic structure with the coils is stationary. The commutator bars are imbedded in the stationary member. Input power is supplied to the brushes through a brush-and-slip ring assembly. An electromagnetic design analysis for a 92 ft-lb, 700 rpm motor was performed. A finite element analysis has been conducted and the results show that magnetic saturation is not a limiting factor in this design. The motor torque is achievable within weight and volume constraints. 9 figs., 1 tab.

  7. C:\\Users\\jorgan\\Documents\\Web Edits\\Vacancies\\Pastry Chef\\Template -Application for Permanent Employment (3).doc BRASENOSE COLLEGE

    E-Print Network [OSTI]

    Oxford, University of

    C:\\Users\\jorgan\\Documents\\Web Edits\\Vacancies\\Pastry Chef\\Template - Application for Permanent: #12;C:\\Users\\jorgan\\Documents\\Web Edits\\Vacancies\\Pastry Chef\\Template - Application for Permanent:\\Users\\jorgan\\Documents\\Web Edits\\Vacancies\\Pastry Chef\\Template - Application for Permanent Employment (3).doc Employment History

  8. arXiv:cond-mat/0007297v118Jul2000 Permanent magnetic moment in mesoscopic metals with spin-orbit interaction

    E-Print Network [OSTI]

    Serota, Rostislav

    arXiv:cond-mat/0007297v118Jul2000 Permanent magnetic moment in mesoscopic metals with spin-orbit interaction and odd number of electrons will have a permanent magnetic moment, even in zero magnetic field an effective single-electron Hamiltonian which accounts for spin-orbit coupling. I. INTRODUCTION Permanent

  9. Impact of a permanent El Nin~o (El Padre) and Indian Ocean Dipole in warm Pliocene climates

    E-Print Network [OSTI]

    . P., M. A. Chandler, J. Jonas, L. E. Sohl, K. Mankoff, and H. Dowsett (2009), Impact of a permanent et al., 1996; Haywood et al., 2000; Haywood and Valdes, 2004]. [3] It is still largely uncertain

  10. Optimal Control of Permanent-MagnetAC MachineDrives with a Novel Multiple ReferenceFrame Estimator/Regulator

    E-Print Network [OSTI]

    Chapman, Patrick

    , IN 47907-1285 Abstract- With appropriate current waveforms, permanent- magnet synchronous machine (PMSM are used to validate the work. I. INTRODUCTION PMSM drives have recently been a topic of intense research

  11. 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.

    2006-01-10T23:59:59.000Z

    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.

  12. 5/10/10 7:22 AMTerry Hazen, Berkeley Lab: Deepwater Horizon Spill Detergents Could Make Bad Situation Worse Page 1 of 3http://www.outlookseries.com/N7/Science/3910_Terry_Hazen_Berkeley_La...water_Horizon_Spill_Detergents_Could_Situation_Worse_Terry_Hazen.

    E-Print Network [OSTI]

    Hazen, Terry

    With millions of gallons crude oil being spewed into the Gulf of Mexico from the Deepwater Horizon oil spill a day into the Gulf of Mexico. To contain the spreading oil slick and keep it from polluting the fragile three miles off the coast of Normandy, releasing about 227,000 tons heavy crude oil that ultimately

  13. Determination of prescription dose for Cs-131 permanent implants using the BED formalism including resensitization correction

    SciTech Connect (OSTI)

    Luo, Wei, E-mail: wei.luo@uky.edu; Molloy, Janelle; Aryal, Prakash; Feddock, Jonathan; Randall, Marcus [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky 40536 (United States)] [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky 40536 (United States)

    2014-02-15T23:59:59.000Z

    Purpose: The current widely used biological equivalent dose (BED) formalism for permanent implants is based on the linear-quadratic model that includes cell repair and repopulation but not resensitization (redistribution and reoxygenation). The authors propose a BED formalism that includes all the four biological effects (4Rs), and the authors propose how it can be used to calculate appropriate prescription doses for permanent implants with Cs-131. Methods: A resensitization correction was added to the BED calculation for permanent implants to account for 4Rs. Using the same BED, the prescription doses with Au-198, I-125, and Pd-103 were converted to the isoeffective Cs-131 prescription doses. The conversion factor F, ratio of the Cs-131 dose to the equivalent dose with the other reference isotope (F{sub r}: with resensitization, F{sub n}: without resensitization), was thus derived and used for actual prescription. Different values of biological parameters such as ?, ?, and relative biological effectiveness for different types of tumors were used for the calculation. Results: Prescription doses with I-125, Pd-103, and Au-198 ranging from 10 to 160 Gy were converted into prescription doses with Cs-131. The difference in dose conversion factors with (F{sub r}) and without (F{sub n}) resensitization was significant but varied with different isotopes and different types of tumors. The conversion factors also varied with different doses. For I-125, the average values of F{sub r}/F{sub n} were 0.51/0.46, for fast growing tumors, and 0.88/0.77 for slow growing tumors. For Pd-103, the average values of F{sub r}/F{sub n} were 1.25/1.15 for fast growing tumors, and 1.28/1.22 for slow growing tumors. For Au-198, the average values of F{sub r}/F{sub n} were 1.08/1.25 for fast growing tumors, and 1.00/1.06 for slow growing tumors. Using the biological parameters for the HeLa/C4-I cells, the averaged value of F{sub r} was 1.07/1.11 (rounded to 1.1), and the averaged value of F{sub n} was 1.75/1.18. F{sub r} of 1.1 has been applied to gynecological cancer implants with expected acute reactions and outcomes as expected based on extensive experience with permanent implants. The calculation also gave the average Cs-131 dose of 126 Gy converted from the I-125 dose of 144 Gy for prostate implants. Conclusions: Inclusion of an allowance for resensitization led to significant dose corrections for Cs-131 permanent implants, and should be applied to prescription dose calculation. The adjustment of the Cs-131 prescription doses with resensitization correction for gynecological permanent implants was consistent with clinical experience and observations. However, the Cs-131 prescription doses converted from other implant doses can be further adjusted based on new experimental results, clinical observations, and clinical outcomes.

  14. 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

    2011-07-05T23:59:59.000Z

    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.

  15. Direct thrust measurement of a permanent magnet helicon double layer thruster

    SciTech Connect (OSTI)

    Takahashi, K.; Lafleur, T.; Charles, C.; Alexander, P.; Boswell, R. W. [Space Plasma, Power and Propulsion Group, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia); Perren, M.; Laine, R. [ASTRIUM-EADS, 6 rue Laurent Pichat, 75016 Paris (France); Pottinger, S.; Lappas, V.; Harle, T.; Lamprou, D. [Surrey Space Centre, University of Surrey, Guildford GU2 7XH (United Kingdom)

    2011-04-04T23:59:59.000Z

    Direct thrust measurements of a permanent magnet helicon double layer thruster have been made using a pendulum thrust balance and a high sensitivity laser displacement sensor. At the low pressures used (0.08 Pa) an ion beam is detected downstream of the thruster exit, and a maximum thrust force of about 3 mN is measured for argon with an rf input power of about 700 W. The measured thrust is proportional to the upstream plasma density and is in good agreement with the theoretical thrust based on the maximum upstream electron pressure.

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

    SciTech Connect (OSTI)

    None

    2012-01-01T23:59:59.000Z

    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.

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

    Broader source: Energy.gov [DOE]

    DOE’s Bonneville Power Administration is preparing this EA to evaluate the potential environmental impacts of replacing an existing seasonal fish weir with a permanent weir, which would be 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 includes a Wild and Scenic River Section 7 analysis.

  18. A Machine Approach for Field Weakening of Permanent-Magnet Motors

    SciTech Connect (OSTI)

    Hsu, J.S.

    2000-04-02T23:59:59.000Z

    The commonly known technology of field weakening for permanent-magnet (PM) motors is achieved by controlling the direct-axis current component through an inverter, without using mechanical variation of the air gap, a new machine approach for field weakening of PM machines by direct control of air-gap fluxes is introduced. The demagnetization situation due to field weakening is not an issue with this new method. In fact, the PMs are strengthened at field weakening. The field-weakening ratio can reach 1O:1 or higher. This technology is particularly useful for the PM generators and electric vehicle drives.

  19. Temperature and thermal stress distributions for the HFIR permanent reflector generated by nuclear heating

    SciTech Connect (OSTI)

    Chang, S.J.

    1998-04-01T23:59:59.000Z

    The beryllium permanent reflector of the High Flux Isotope Reactor has the main functions for slowing down and reflecting the neutrons and housing the experimental facilities. The reflector is heated as a result of the nuclear reaction. Heat is removed mainly by the cooling water passing through the densely distributed coolant holes along the vertical or axial direction of the reflector. The reflector neutronic distribution and its heating rate are calculated by J.C. Gehin of the Oak Ridge National Laboratory by applying the Monte Carlo Code MCNP. The heat transfer boundary conditions along several reflector interfaces are estimated to remove additional heat from the reflector. The present paper is to report the calculation results of the temperature and the thermal stress distributions of the permanent reflector by applying the computer aided design code I-DEAS and the finite element code ABAQUS. The present calculation is to estimate the high stress areas as a result of the new beam tube cutouts along the horizontal mid-plane of the reflector of the recent reactor upgrade project. These high stresses were not able to be calculated in the preliminary design analysis in earlier 60`s. The heat transfer boundary conditions are used in this redesigned calculation. The material constants and the acceptance criteria for the allowable stresses are mainly based on that assumed in the preliminary design report.

  20. Status of UCLA Helical Permanent-Magnet Inverse Free Electron Laser

    SciTech Connect (OSTI)

    Knyazik, A.; Tikhoplav, R.; Frederico, J. T.; Affolter, M.; Rosenzweig, J. B. [Department of Physics and Astronomy, UCLA, Los Angeles, California 90095 (United States)

    2009-01-22T23:59:59.000Z

    A helical undulator, utilizing permanent-magnet of cylindrically symmetric (Halbach) geometry is being developed at UCLA's Neptune Facility. The initial prototype is a short 10 cm, 7 periods long helical undulator, designed to test the electron-photon coupling by observing the micro-bunching is currently being constructed. The Neptune IFEL facility utilizes a 15 MeV Photoinjector-generated electron beam of 0.5 nC interacting with CO{sub 2} of peak energy up to 100 J, estimated to have acceleration of 100 MeV/m. An Open Iris-Loaded Waveguide Structure (OILS) scheme which conserves laser mode size and wave fronts throughout the undulator, is utilized to avoid Gouy phase shift caused by focusing of the drive laser. Undulator design was tested by computer simulations Radia and Genesis 1.3. Coherent Transition Radiation and Coherent Cherenkov Radiation will be used for micro-bunching diagnostic. Currently permanent dipoles and their aluminum holders have been built, and the project is in its final state of assembly and undulator testing.

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

    SciTech Connect (OSTI)

    Waldmann, Ole; Ludewigt, Bernhard

    2010-10-11T23:59:59.000Z

    We present recent work on the development of a microwave ion source that will be used in a high-yield compact neutron generator for active interrogation applications. The sealed tube generator will be capable of producing high neutron yields, 5x1011 n/s for D-T and ~;;1x1010 n/s for D-D reactions, while remaining transportable. We constructed a microwave ion source (2.45 GHz) with permanent magnets to provide the magnetic field strength of 87.5 mT necessary for satisfying the electron cyclotron resonance (ECR) condition. Microwave ion sources can produce high extracted beam currents at the low gas pressures required for sealed tube operation and at lower power levels than previously used RF-driven ion sources. A 100 mA deuterium/tritium beam will be extracted through a large slit (60x6 mm2) to spread the beam power over a larger target area. This paper describes the design of the permanent-magnet microwave ion source and discusses the impact of the magnetic field design on the source performance. The required equivalent proton beam current density of 40 mA/cm2 was extracted at a moderate microwave power of 400 W with an optimized magnetic field.

  2. Axial gap permanent-magnet machine with reluctance poles and PM element covers

    SciTech Connect (OSTI)

    Hsu, John S [Oak Ridge, TN; McKeever, John W [Oak Ridge, TN

    2009-04-07T23:59:59.000Z

    An electric machine (10) has a disk-shaped rotor (24) disposed in an operating space between two opposing stator assemblies (11, 12) to provide two axial air gaps (15, 16). The rotor (24) has a hub (28) and an outer ring (26) of non-magnetic material and is further provided with a plurality of permanent magnetic elements (25) for coupling flux that is induced by the magnetic field of the stator assemblies (11, 12). The permanent magnetic elements (25) are spaced apart and reluctance poles (27) are positioned in spaces between the magnetic elements (25) to couple additional flux induced by the magnetic field of the stator assemblies (11, 12). Various constructions and shapes (40-45) for the PM magnetic elements (25) are disclosed, and including PM covers (60) of ferromagnetic material for enhancing q-axis flux in the air gaps (15, 16) and for reducing harmonics where toothed stators are used. Methods of providing increased torque using the the various rotor constructions are also disclosed.

  3. A nonlinearity in permanent-magnet systems used in watt balances

    E-Print Network [OSTI]

    Li, Shisong; Pratt, Jon

    2014-01-01T23:59:59.000Z

    Watt balances are used to measure the Planck constant and will be used in the future to realize mass at the kilogram level. They increasingly rely on permanent magnet systems to generate the magnetic flux. It has been known that the weighing current might effect the magnetization state of the permanent magnetic system used in these systems causing a systematic bias that can lead to an error in the result if not accounted for. In this article a simple model explaining the effect of the weighing current on the yoke of the magnet is developed. This model leads to a nonlinear dependence of the magnetic flux density in the gap that is proportional to the squared value of the coil current. The effect arises from changing the reluctance of the yoke by the additional field produced by the coil. Our analysis shows that the effect depends on the width of the air gap, the magnetic flux density in the air gap, and the $BH$ curve of the yoke material. Suggestions to reduce the nonlinear effect are discussed.

  4. The University of Wisconsin-Madison (UW-Madison) has established a policy that in certain instances it will file petitions on behalf of non-immigrant employees seeking permanent residence. The office of

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    is lengthy, involving up to three government agencies, and the final decision to grant the permanent

  5. ULTRA-DEEPWATER ADVISORY COMMITTEE

    Energy Savers [EERE]

    of focus might include: * Mitigate leakage in and around the boreholes from reservoir fluids and gas as well as any injected liquids and materials; * Long term borehole...

  6. 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

    2002-09-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Douguet, Nicolas; Kokoouline, Viatcheslav; Greene, Chris H. [Department of Physics, University of Central Florida, Orlando, Florida 32816 (United States) and Laboratoire Aime Cotton, CNRS, Universite Paris-Sud XI, Orsay (France); Department of Physics and JILA, University of Colorado, Boulder, Colorado 80309 (United States)

    2009-12-15T23:59:59.000Z

    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{sup +} ion. The HCO{sup +} ion has a considerable permanent dipole moment (Dapprox =4 D), 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 demonstrates the possibility of applying generalized quantum defect theory to the dissociative recombination of molecular ions.

  8. 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

  9. 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

  10. Development of a Direct Drive Permanent Magnet Generator for Small Wind Turbines

    SciTech Connect (OSTI)

    Chertok, Allan; Hablanian, David; McTaggart, Paul; DOE Project Officer - Keith Bennett

    2004-11-16T23:59:59.000Z

    In this program, TIAX performed the conceptual design and analysis of an innovative, modular, direct-drive permanent magnet generator (PMG) for use in small wind turbines that range in power rating from 25 kW to 100 kW. TIAX adapted an approach that has been successfully demonstrated in high volume consumer products such as direct-drive washing machines and portable generators. An electromagnetic model was created and the modular PMG design was compared to an illustrative non-modular design. The resulting projections show that the modular design can achieve significant reductions in size, weight, and manufacturing cost without compromising efficiency. Reducing generator size and weight can also lower the size and weight of other wind turbine components and hence their manufacturing cost.

  11. The permanent electric dipole moment of thorium sulfide, ThS

    SciTech Connect (OSTI)

    Le, Anh; Steimle, Timothy C., E-mail: Tsteimle@ASU.edu [Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604 (United States); Heaven, Michael C. [Department of Chemistry, Emory University, Atlanta, Georgia 30322 (United States)] [Department of Chemistry, Emory University, Atlanta, Georgia 30322 (United States)

    2014-01-14T23:59:59.000Z

    Numerous rotational lines of the (18.26)1-X{sup 1}?{sup +} band system of thorium sulfide, ThS, were recorded near 547.6 nm at a resolution of approximately 30 MHz. Measurements were made under field-free conditions, and in the presence of a static electric field. The field-free spectrum was analyzed to produce rotational and ?-doubling parameters. The Stark shifts induced by the electric field were analyzed to determine permanent electric dipole moments, ?{sup -vector}{sub el}, of 4.58(10) D and 6.72(5) D for the X{sup 1}?{sup +} (v = 0) and (18.26)1 states, respectively. The results are compared with the predictions of previous and new electronic structure calculations for ThS, and the properties of isovalent ThO.

  12. Indirect rotor position sensing in real time for brushless permanent magnet motor drives

    SciTech Connect (OSTI)

    Ertugrul, N. [Univ. of Adelaide (Australia). Dept. of Electrical and Electronic Engineering] [Univ. of Adelaide (Australia). Dept. of Electrical and Electronic Engineering; Acarnley, P.P. [Univ. of Newcastle upon Tyne (United Kingdom). Dept. of Electrical and Electronic Engineering] [Univ. of Newcastle upon Tyne (United Kingdom). Dept. of Electrical and Electronic Engineering

    1998-07-01T23:59:59.000Z

    This paper describes a modern solution to real-time rotor position estimation of brushless permanent magnet (PM) motor drives. The position estimation scheme, based on flux linkage and line-current estimation, is implemented in real time by using the abc reference frame, and it is tested dynamically. The position estimation model of the test motor, development of hardware, and basic operation of the digital signal processor (DSP) are discussed. The overall position estimation strategy is accomplished with a fast DSP (TMS320C30). The method is a shaft position sensorless method that is applicable to a wide range of excitation types in brushless PM motors without any restriction on the motor model and the current excitation. Both rectangular and sinewave-excited brushless PM motor drives are examined, and the results are given to demonstrate the effectiveness of the method with dynamic loads in closed estimated position loop.

  13. Permanent-magnet helicon sources and arrays: A new type of rf plasma

    SciTech Connect (OSTI)

    Chen, Francis F.; Torreblanca, Humberto [University of California, Los Angeles, California 90095-1594 (United States)

    2009-05-15T23:59:59.000Z

    Helicon discharges are known for their ability to produce high densities of partially ionized plasma, their efficiency arising from an unusual mechanism of rf coupling. However, the requirement of a dc magnetic field has prevented their wide acceptance in industry. The use of permanent magnets greatly simplifies helicon sources, and arrays of small sources extend the use of helicons to the processing of large substrates. An eight-tube array was designed and constructed, and its density uniformity measured in a 53x165 cm{sup 2} chamber. Three innovations involved (a) the remote field of ring magnets, (b) a low-field density peak, and (c) rf power distribution. High-density plasmas uniform over large areas requires compatibility in all three areas.

  14. Design, Manufacture and Measurements of Permanent Quadrupole Magnets for Linac4

    E-Print Network [OSTI]

    Tommasini, D; Thonet, P; Vorozhtsov, A

    2012-01-01T23:59:59.000Z

    Compact quadrupole magnets are required for the CCDTL (Cell-Coupled Drift Tube Linac) of Linac 4, a 160 MeV linear accelerator of negative hydrogen ions which will replace the old 50 MeV proton Linac2 at CERN. The magnets, of an overall physical length of 140 mm and an aperture diameter of 45 mm, are based on Sm2Co17 blocks and can provide an integrated gradient of up to 1.6 Tesla. The magnetic field quality is determined by 4 ferromagnetic pole tips, aligned together with the permanent magnets blocks inside a structure made in a single piece. Tuning bars allow to individually trim the magnetic flux provided by each pole, to correct possible differences between blocks and to modify the field gradient intensity within about 20% of the nominal value. The paper describes and discusses the design, manufacture and magnetic measurements of a first prototype magnet.

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

    DOE Patents [OSTI]

    Forsberg, C.W.

    1992-03-24T23:59:59.000Z

    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.

  16. Study of permanent-magnet couplings with progressive magnetization using an analytical formulation

    SciTech Connect (OSTI)

    Charpentier, J.F.; Lemarquand, G.

    1999-09-01T23:59:59.000Z

    Permanent-magnet (PM) magnetic couplings are used in many industrial applications. They allow the transmission of a torque from a rotating part to another rotating part without any mechanical contact. They are used in sealed equipment to transmit a movement through a separation wall. They are also very useful in high security applications to avoid failures due to torque overload. Nonclassical structures of permanent-magnet cylindrical air-gap couplings with progressive magnetization are studied. In these couplings, parallelepiped magnets with nonclassical magnetization direction are used and stuck in ironless cores. The magnetization direction of each magnet is chosen to provide an optimal repartition of the induction in the air gap. This progressive magnetization allows very high values of pullout torque. The use of this type of structure with ironless cores and very high pull-out torque seems to be an advantageous way to minimize the inertia and maximize the pullout torque of a magnetic coupling. An efficient method to calculate the torque of such a coupling is presented, based on analytical formulas for forces between magnets. It allows the exact evaluation of the performance of the studied couplings when the main dimensions of the coupling are varying with small calculation time. In this paper the influence of the number of pole pairs, the influence of the number of magnets per pole, the influence of the magnets' thickness, the influence of the air-gap radius, and the influence of the length of the structure are studied and discussed. Then some general rules are presented for efficient design of such a coupling.

  17. The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent dipole moment

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent In this study, we investigate the structure of the polar alkali-Strontium diatomic molecules as possible already been reported, while quantum degeneracy in Ytterbium [22, 23], Calcium [24], and Strontium [25, 26

  18. Abstract--In this paper, the performances of a hybrid ex-citation flux switching permanent magnets synchronous

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    High efficiency, high power factor, high Tor- que/Volume ratio, high torque and speed operating points solution [3] while it combines the advantages of the permanent magnets machines and wound rotor synchronous iron parts, classical armature wind- ings and additional DC excitation coils situated above

  19. 516 IEEE TRANSACTIONS ON MAGNETICS, VOL. 43, NO. 2, FEBRUARY 2007 Analysis of Permanent-Magnet Machines Using an

    E-Print Network [OSTI]

    Hofmann, Heath F.

    --Magnetic analysis, permanent-magnet machines. I. INTRODUCTION THE computation of magnetic fields in electric machines is typically performed using one of two methods; closed- form solutions [1]­[7] or finite-Magnet Machines Using an Anisotropic Magnetostatic Continuum Formulation Wensen Wang, Danhong Zhong, and Heath

  20. Abstract--A variable speed wind turbine is presented in this paper, where multiple permanent magnet synchronous

    E-Print Network [OSTI]

    Chen, Zhe

    1 Abstract--A variable speed wind turbine is presented in this paper, where multiple permanent magnet synchronous generators (MPMSGs) drive-train configuration is employed in the wind turbine of this variable speed wind turbine based on multiple generators drive-train configuration. Index Terms--Wind power

  1. 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

  2. On leave at MIT. Permanent address: Departamento de Quimica Inorga nica, Universidad de La Laguna, E-38200 La Laguna, Tenerife

    E-Print Network [OSTI]

    zur Loye, Hans-Conrad

    interactions between electrons, such as magnetic coupling, can be strongly depen- dent on the crystallographic On leave at MIT. Permanent address: Departamento de Qui´mica Inorga´ nica, Universidad de La OF SOLID STATE CHEMISTRY 130, 35--41 (1997) ARTICLE NO. SC967267 Synthesis, Crystal Structure, and Magnetic

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

    E-Print Network [OSTI]

    Jenicek, David P. (David Pierre)

    2011-01-01T23:59:59.000Z

    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, ...

  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

    and simulation of a superhigh-speed permanent magnet synchronous motor (PMSM) that operates in the cryogenic temperature of 77 K. The designed PMSM is used to drive a two-stage cryocooler for zero boil-off and long, and some tradeoffs used in the design. A prototype PMSM was built to verify the design methodology. Index

  5. Abstract-During the design of permanent magnet synchronous machines (PMSM), the first step that engineers have to do,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Abstract-During the design of permanent magnet synchronous machines (PMSM), the first step. Fractional- slots (FS)-PMSM offers several advantages and have been focused by a lot of researches. However to their numerous advantages, PMSM have found wide attention in the research and industrial areas. For instance

  6. Design Procedure for a Very High Speed Slotless Permanent Magnet Motor Pierre-Daniel Pfister, Student Member, IEEE and Yves Perriard, Senior Member, IEEE

    E-Print Network [OSTI]

    Psaltis, Demetri

    Design Procedure for a Very High Speed Slotless Permanent Magnet Motor Pierre-Daniel Pfister speed slotless permanent magnet motor design procedure using an analyti- cal model. The multiphysics in the center, a magnet, an air gap, and the stator yoke. In our case, the shaft radius is set to zero

  7. Abstract --This paper deals a double layer and a single layer Flux-Switching Permanent Magnet (FSPM) motors for a fault

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Abstract --This paper deals a double layer and a single layer Flux-Switching Permanent Magnet (FSPM-Switching Permanent Magnet (FSPM) motors attract more and more attentions in the critical application as the Hybrid and will disturb the normal phases because of the magnetic coupling between phases. In order to compare the fault

  8. Improving exchange-spring nanocomposite permanent magnets J. S. Jiang, J. E. Pearson, Z. Y. Liu, B. Kabius, S. Trasobares, D. J. Miller, and S. D. Bader

    E-Print Network [OSTI]

    Liu, J. Ping

    Improving exchange-spring nanocomposite permanent magnets J. S. Jiang, J. E. Pearson, Z. Y. Liu, B.1063/1.1828225] The "exchange-spring" mechanism in nanocomposite magnets,1 where the interfacial exchange coupling between to ul- trastrong permanent magnets whose energy product BH max is more than twice that of Nd­Fe­B.2

  9. Customized Dose Prescription for Permanent Prostate Brachytherapy: Insights From a Multicenter Analysis of Dosimetry Outcomes

    SciTech Connect (OSTI)

    Stone, Nelson N. [Mount Sinai School of Medicine, New York, NY (United States)], E-mail: nelsonstone@optonline.net; Potters, Louis [New York Prostate Institute at South Nassau Communities Hospital, Oceanside, NY (United States); Davis, Brian J. [Mayo Clinic, Rochester, MN (United States); Ciezki, Jay P. [Cleveland Clinic Foundation, Cleveland, OH (United States); Zelefsky, Michael J. [Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Roach, Mack [University of California, San Francisco, School of Medicine, San Francisco, CA (United States); Fearn, Paul A. B.A. [Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Kattan, Michael W. [Cleveland Clinic Foundation, Cleveland, OH (United States); Stock, Richard G. [Mount Sinai School of Medicine, New York, NY (United States)

    2007-12-01T23:59:59.000Z

    Purpose: To investigate the biochemical control rate in patients undergoing permanent prostate brachytherapy as a function of the biologically effective dose (BED) and risk group. Methods and Materials: Six centers provided data on 3,928 permanent brachytherapy patients with postimplant dosimetry results. The mean prostate-specific antigen level was 8.9 ng/mL. {sup 125}I was used in 2,293 (58%), {sup 103}Pd in 1,635, and supplemental external beam radiotherapy in 882 (22.5%) patients. The patients were stratified into low- (n = 2,188), intermediate- (n = 1,188), and high- (n = 552) risk groups and into three BED groups of < 140 Gy (n = 524), 140-200 Gy (n = 2284), and >200 Gy (n = 1,115). Freedom from biochemical disease progression (biochemical freedom from failure [bFFF]) was determined using the American Society for Therapeutic Radiology Oncology and Phoenix definitions and calculated using the Kaplan-Meier method, with factors compared using the log-rank test. Results: The 10-year prostate-specific antigen bFFF rate for the American Society for Therapeutic Radiology Oncology and Phoenix definitions was 79.2% and 70%, respectively. The corresponding bFFF rates for the low-, intermediate-, and high-risk groups was 84.1% and 78.1%, 76.8% and 63.6%, and 64.4% and 58.2%, respectively (p < 0.0001). The corresponding bFFF rate for the three BED groups was 56.1% and 41.4%, 80% and 77.9%, and 91.1% and 82.9% (p < 0.0001). The corresponding bFFF rate for the low-risk patients by dose group was 69.8% and 49.8%, 86% and 85.2%, and 88.1% and 88.3% for the low-, intermediate, and high-dose group, respectively (p <0.0001). The corresponding bFFF rate for the intermediate-risk patients by dose group was 52.9% and 23.1%, 74.1% and 77.7%, and 94.3% and 88.8% for the low-, intermediate-, and high-dose group, respectively (p < 0.0001). The corresponding bFFF rate for high-risk patients by dose group was 19.2% and 41.7%, 61.8% and 53.2%, and 90% and 69.6% for the low-, intermediate-, and high-dose group, respectively (p < 0.0001). Conclusions: These data suggest that permanent brachytherapy dose prescriptions can be customized to risk status. In low-risk patients, achieving a BED of {>=}140 Gy might be adequate for prostate-specific antigen control. However, high-risk disease might require a BED dose of {>=}200 Gy.

  10. Subsea Kick Detection on Floating Vessels: A Parametric Study

    E-Print Network [OSTI]

    Collette, Eric Peter

    2013-07-22T23:59:59.000Z

    Well control in drilling operations is priority to personnel safety. Detection of kicks, or the unscheduled entry of formation fluids into the wellbore, is vital to well control. It has been determined that return flow rate is the parameter most...

  11. Apparatus and methods for splicing conduits and hoses subsea

    DOE Patents [OSTI]

    Slocum, Alexander Henry; Gutierrez, Luis Javier

    2014-03-11T23:59:59.000Z

    A hose connection system comprises a body including an internal cavity and a port in fluid communication with a portion of the internal cavity. In addition, the system comprises a hose end fitting positioned in the cavity. The hose end fitting includes an inner tubular member and an outer tubular member concentrically disposed about the inner tubular member. The outer tubular member includes a plurality of circumferentially spaced axial slits. Further, the system comprises a plurality of wedge members arranged circumferentially about the outer tubular member. Still further, the system comprises an annular piston movably disposed within the internal cavity of the body. An end of the piston has an inner frustoconical surface that slidingly engages the plurality of wedge members. The piston is configured to move axially through the body and compress the wedge members and the outer tubular member radially inward.

  12. MHK Technologies/Sabella subsea tidal turbine | 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 Home5b9fcbce19 No revision hasInformation Earth's Heat JumpIncMAKGalway Bay IEOWC < MHKPulse-Stream 120Sabella Riversubsea

  13. Next-Generation Subsea Technology |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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions andDataNationalNewport News Business55NewsNext JeffersonFuture

  14. A Deep Dive into the Subsea Environment | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe β-Research and Education Opportunities

  15. Inventors in Action: Extreme Subsea Machines | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickrinformation for and ApplicationNuclearLeao Bruno LeaoInventors in

  16. Quality of life of patients after permanent prostate brachytherapy in relation to dosimetry

    SciTech Connect (OSTI)

    Gellekom, Marion van [Department of Radiotherapy, University Medical Center Utrecht, Utrecht (Netherlands)]. E-mail: marionvangellekom@yahoo.com; Moerland, Marinus A. [Department of Radiotherapy, University Medical Center Utrecht, Utrecht (Netherlands); Vulpen, Marco van [Department of Radiotherapy, University Medical Center Utrecht, Utrecht (Netherlands); Wijrdeman, Harm K. [Department of Radiotherapy, University Medical Center Utrecht, Utrecht (Netherlands); Battermann, Jan J. [Department of Radiotherapy, University Medical Center Utrecht, Utrecht (Netherlands)

    2005-11-01T23:59:59.000Z

    Purpose: To investigate changes in quality of life (QoL) after permanent prostate brachytherapy and to correlate these changes with postimplant dosimetry based on magnetic resonance (MR) images. Methods and Materials: For this study, 127 patients with low-stage prostate cancer and treated with brachytherapy received a QoL questionnaire at five time points: before treatment and at 4 weeks, 6 months, 1 year, and 2 years after treatment. The questionnaire included the RAND-36 generic health survey, the cancer-specific European Organization for Research and Treatment of Cancer (EORTC) core questionnaire, the tumor-specific EORTC prostate cancer module, and the American Urological Association symptom index. Postimplant dosimetry was based on registered T1 spin echo transversal, T2 turbo spin echo transversal, and T2 turbo spin echo sagittal MR images and CT images taken 4 weeks after implantation of the iodine-125 seeds. Calculated parameters were prostate volume, prostate volume receiving 100% (V{sub 100}) and 150% (V{sub 150}) dose, dose to 90% of the prostate volume (D{sub 90}), maximum dose in 1-, 2-, and 5-cm{sup 3} rectum volume, distance between prostate and anterior rectum wall, and the maximum dose in 1%, 2%, and 5% urethra volume. Analysis of variance for repeated measures was used for comparison of the means of all variables in the different questionnaires. Linear regression analysis (stepwise) was used to investigate the correlations between QoL parameters and dosimetry parameters. Results: On average, only the QoL at 4 weeks after implant was significantly different from (worse than) the QoL at the other time points. Regression analysis showed a significant correlation between changes in bowel problems and the maximum dose in 2-cm{sup 3} rectum volume, between changes in urinary symptoms and prostate volume, and between changes in urinary problems and the D{sub 90} value of the prostate. Conclusions: The QoL for patients with permanent prostate implants was worse in the first months after treatment but returned to baseline values 1 year after implant. Significant correlations were found between dose distribution and QoL.

  17. 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.

    2007-10-31T23:59:59.000Z

    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.

  18. 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

    2006-01-01T23:59:59.000Z

    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.

  19. Carbide/nitride grain refined rare earth-iron-boron permanent magnet and method of making

    DOE Patents [OSTI]

    McCallum, R. William (Ames, IA); Branagan, Daniel J. (Ames, IA)

    1996-01-23T23:59:59.000Z

    A method of making a permanent magnet wherein 1) a melt is formed having a base alloy composition comprising RE, Fe and/or Co, and B (where RE is one or more rare earth elements) and 2) TR (where TR is a transition metal selected from at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, and Al) and at least one of C and N are provided in the base alloy composition melt in substantially stoichiometric amounts to form a thermodynamically stable compound (e.g. TR carbide, nitride or carbonitride). The melt is rapidly solidified in a manner to form particulates having a substantially amorphous (metallic glass) structure and a dispersion of primary TRC, TRN and/or TRC/N precipitates. The amorphous particulates are heated above the crystallization temperature of the base alloy composition to nucleate and grow a hard magnetic phase to an optimum grain size and to form secondary TRC, TRN and/or TRC/N precipitates dispersed at grain boundaries. The crystallized particulates are consolidated at an elevated temperature to form a shape. During elevated temperature consolidation, the primary and secondary precipitates act to pin the grain boundaries and minimize deleterious grain growth that is harmful to magnetic properties.

  20. Carbide/nitride grain refined rare earth-iron-boron permanent magnet and method of making

    DOE Patents [OSTI]

    McCallum, R.W.; Branagan, D.J.

    1996-01-23T23:59:59.000Z

    A method of making a permanent magnet is disclosed wherein (1) a melt is formed having a base alloy composition comprising RE, Fe and/or Co, and B (where RE is one or more rare earth elements) and (2) TR (where TR is a transition metal selected from at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, and Al) and at least one of C and N are provided in the base alloy composition melt in substantially stoichiometric amounts to form a thermodynamically stable compound (e.g. TR carbide, nitride or carbonitride). The melt is rapidly solidified in a manner to form particulates having a substantially amorphous (metallic glass) structure and a dispersion of primary TRC, TRN and/or TRC/N precipitates. The amorphous particulates are heated above the crystallization temperature of the base alloy composition to nucleate and grow a hard magnetic phase to an optimum grain size and to form secondary TRC, TRN and/or TRC/N precipitates dispersed at grain boundaries. The crystallized particulates are consolidated at an elevated temperature to form a shape. During elevated temperature consolidation, the primary and secondary precipitates act to pin the grain boundaries and minimize deleterious grain growth that is harmful to magnetic properties. 33 figs.

  1. Low-level radioactive mixed waste land disposal facility -- Permanent disposal

    SciTech Connect (OSTI)

    Erpenbeck, E.G.; Jasen, W.G.

    1993-03-01T23:59:59.000Z

    Radioactive mixed waste (RMW) disposal at US Department of Energy (DOE) facilities is subject to the Resource Conservation and Recovery Act of 1976 (RCRA) and the Hazardous and Solid Waste Amendments of 1984 (HSWA). Westinghouse Hanford Company, in Richland, Washington, has completed the design of a radioactive mixed waste land disposal facility, which is based on the best available technology compliant with RCRA. When completed, this facility will provide permanent disposal of solid RMW, after treatment, in accordance with the Land Disposal Restrictions. The facility includes a double clay and geosynthetic liner with a leachate collection system to minimize potential leakage of radioactive or hazardous constituents from the landfill. The two clay liners will be capable of achieving a permeability of less than 1 {times} 10{sup {minus}7} cm/s. The two clay liners, along with the two high density polyethylene (HDPE) liners and the leachate collection and removal system, provide a more than conservative, physical containment of any potential radioactive and/or hazardous contamination.

  2. Plasma studies of the permanent magnet electron cyclotron resonance ion source at Peking University

    SciTech Connect (OSTI)

    Ren, H. T.; Peng, S. X., E-mail: sxpeng@pku.edu.cn; Xu, Y.; Zhao, J.; Lu, P. N.; Chen, J.; Zhang, A. L.; Zhang, T.; Guo, Z. Y.; Chen, J. E. [State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, Peking University, Beijing 100871 (China)] [State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, Peking University, Beijing 100871 (China)

    2014-02-15T23:59:59.000Z

    At Peking University (PKU) we have developed several 2.45 GHz Permanent Magnet Electron Cyclotron Resonance ion sources for PKUNIFTY, SFRFQ, Coupled RFQ and SFRFQ, and Dielectric-Wall Accelerator (DWA) projects (respectively, 50 mA of D{sup +}, 10 mA of O{sup +}, 10 mA of He{sup +}, and 50 mA of H{sup +}). In order to improve performance of these ion sources, it is necessary to better understand the principal factors that influence the plasma density and the atomic ion fraction. Theoretical analysis about microwave transmission and cut-off inside the discharge chamber were carried out to study the influence of the discharge chamber diameters. As a consequence, experimental studies on plasma density and ion fraction with different discharge chamber sizes have been carried out. Due to the difficulties in measuring plasma density inside the discharge chamber, the output beam current was measured to reflect the plasma density. Experimental results show that the plasma density increases to the maximum and then decreases significantly as the diameter changed from 64 mm to 30 mm, and the atomic ion fraction has the same tendency. The maximum beam intensity was obtained with the diameter of 35 mm, but the maximum atomic ion fraction with a diameter of 40 mm. The experimental results are basically accordant with the theoretical calculation. Details are presented in this paper.

  3. Ferrite permanent magnet electrical machine and the application thereof within vehicle traction drives

    SciTech Connect (OSTI)

    Gritter, D.J.; O'Neil, W.K.; Turner, D.

    1987-03-17T23:59:59.000Z

    This patent describes, in combination, a land vehicle having axially aligned ground engaging tractive wheels, and a drivetrain carried by the vehicle for the propulsion thereof. The drivetrain comprises: (a) a substantially fixed DC power source including at least one chemical battery, (b) transmission means including selectable multiple gear ratios, an input shaft and a mechanical differential operative to transfer torque to the wheels, (c) a single-phase self-synchronous permanent magnet motor including, (i) an elongated central shaft, (ii) a generally u-shaped frame assembly adapted for mechanical grounding the shaft to a relatively stationary portion of the vehicle, the shaft being secured to the frame proximate each end thereof, (iii) a stator assembly secured to the shaft and characterized by a plurality of outwardly directed integrally formed salient poles and associated bifilar-wound induction coils, and (iv) a rotor assembly rotatably disposed on the shaft and substantially enclosing the stator assembly, the rotor assembly comprising a cylindrical shell defining an inner surface.

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

    SciTech Connect (OSTI)

    Waldmann, Ole; Ludewigt, Bernhard

    2011-03-31T23:59:59.000Z

    A microwave ion source has been designed and constructed for use with a sealed-tube, high-yield neutron generator. When operated with a tritium-deuterium gas mixture the generator will be capable of producing 5*1011 n/s in non-proliferation applications. Microwave ion sources are well suited for such a device because they can produce high extracted beam currents with a high atomic fraction at low gas pressures of 0.2-0.3 Pa required for sealed tube operation. The magnetic field strength for achieving electron cyclotron resonance (ECR) condition, 87.5 mT at 2.45 GHz microwave frequency, was generated and shaped with permanent magnets surrounding the plasma chamber and a ferromagnetic plasma electrode. This approach resulted in a compact ion source that matches the neutron generator requirements. The needed proton-equivalent extracted beam current density of 40 mA/cm^2 was obtained at moderate microwave power levels of 400 W. Results on magnetic field design, pressure dependency and atomic fraction measured for different wall materials are presented.

  5. Measurements of vacuum magnetic birefringence using permanent dipole magnets: the PVLAS experiment

    E-Print Network [OSTI]

    F. Della Valle; U. Gastaldi; G. Messineo; E. Milotti; R. Pengo; L. Piemontese; G. Ruoso; G. Zavattini

    2013-01-21T23:59:59.000Z

    The PVLAS collaboration is presently assembling a new apparatus (at the INFN section of Ferrara, Italy) to detect vacuum magnetic birefringence (VMB). VMB is related to the structure of the QED vacuum and is predicted by the Euler-Heisenberg-Weisskopf effective Lagrangian. It can be detected by measuring the ellipticity acquired by a linearly polarised light beam propagating through a strong magnetic field. Using the very same optical technique it is also possible to search for hypothetical low-mass particles interacting with two photons, such as axion-like (ALP) or millicharged particles (MCP). Here we report results of a scaled-down test setup and describe the new PVLAS apparatus. This latter one is in construction and is based on a high-sensitivity ellipsometer with a high-finesse Fabry-Perot cavity ($>4\\times 10^5$) and two 0.8 m long 2.5 T rotating permanent dipole magnets. Measurements with the test setup have improved by a factor 2 the previous upper bound on the parameter $A_e$, which determines the strength of the nonlinear terms in the QED Lagrangian: $A_e^{\\rm (PVLAS)} coupling constant of ALPs to two photons and confirmation of previous limits on the fractional charge of millicharged particles is given.

  6. Performance of a permanent-magnet helicon source at 27 and 13 MHz

    SciTech Connect (OSTI)

    Chen, Francis F. [Electrical Engineering Department, University of California, Los Angeles, California 90095 (United States)

    2012-09-15T23:59:59.000Z

    A small helicon source is used to create dense plasma and inject it into a large chamber. A permanent magnet is used for the dc magnetic field (B-field), making the system very simple and compact. Though theory predicts that better antenna coupling will occur at 27.12 MHz, it was found that 13.56 MHz surprisingly gives even higher density due to practical effects not included in theory. Complete density n and electron temperature T{sub e} profiles are measured at three distances below the source. The plasma inside the source is also measured with a special probe, even under the antenna. The density there is lower than expected because the plasma created is immediately ejected, filling the experimental chamber. The advantage of helicons over inductively coupled plasmas (with no B-field) increases with RF power. At high B-fields, edge ionization by the Trivelpiece-Gould mode can be seen. These results are useful for design of multiple-tube, large-area helicon sources for plasma etching and deposition because problems are encountered which cannot be foreseen by theory alone.

  7. 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

    2011-09-30T23:59:59.000Z

    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

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

    DOE Patents [OSTI]

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

    1981-01-01T23:59:59.000Z

    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.

  9. H-mode accelerating structures with permanent-magnet quadrupole beam focusing

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

    Kurennoy, S. S.; Rybarcyk, L. J.; O’Hara, J. F.; Olivas, E. R.; Wangler, T. P.

    2012-09-01T23:59:59.000Z

    We have developed high-efficiency normal-conducting rf accelerating structures by combining H -mode resonator cavities and a transverse beam focusing by permanent-magnet quadrupoles (PMQ), for beam velocities in the range of a few percent of the speed of light. The shunt impedance of interdigital H -mode (IH-PMQ) structures is 10–20 times higher than that of a conventional drift-tube linac, while the transverse size is 4–5 times smaller. Results of the combined 3D modeling—electromagnetic computations, multiparticle beam-dynamics simulations with high currents, and thermal-stress analysis—for an IH-PMQ accelerator tank are presented. The accelerating-field profile in the tank is tuned to provide the best propagation of a 50-mA deuteron beam using coupled iterations of electromagnetic and beam-dynamics modeling. Measurements of a cold model of the IH-PMQ tank show a good agreement with the calculations. Examples of cross-bar H -mode structures with PMQ focusing for higher beam velocities are also presented. H -PMQ accelerating structures following a short radio-frequency quadrupole accelerator can be used both in the front end of ion linacs or in stand-alone applications.

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

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    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.

  11. Hanford Site Permanent Isolation Surface Barrier Development Program: Fiscal year 1992 and 1993 highlights

    SciTech Connect (OSTI)

    Cadwell, L.L.; Link, S.O.; Gee, G.W. [eds.

    1993-09-01T23:59:59.000Z

    The Hanford Site Permanent Isolation Surface Barrier Development Program was jointly developed by the Pacific Northwest Laboratory and Westinghouse Hanford Company to design and test an earthen cover system that can be used to inhibit water infiltration; plant, animal, and human intrusion; and wind and water erosion. Kaiser Engineers Hanford Company provided engineering design support for the program. Work on barrier design has been under way at Hanford for nearly 10 years. The comprehensive development of a long-term barrier, formerly the Hanford Site Protective Barrier Development Program, was initiated in FY 1986, and a general field-tested design is expected to be completed by FY 1998. Highlights of efforts in FY 1992 and FY 1993 included the resumption of field testing, the completion of the prototype barrier design, and the convening of an external peer review panel, which met twice with the barrier development team. The review panel provided helpful guidance on current and future barrier development activities, while commending the program for its significant technical contributions to innovative barrier technology development.

  12. 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

    2009-04-30T23:59:59.000Z

    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.

  13. The ground state of the polar alkali-Strontium molecules: potential energy curve and permanent dipole moment

    E-Print Network [OSTI]

    Romain Guérout; Mireille Aymar; Olivier Dulieu

    2010-07-12T23:59:59.000Z

    In this study, we investigate the structure of the polar alkali-Strontium diatomic molecules as possible candidates for the realization of samples of new species of ultracold polar molecules. Using a quantum chemistry approach based on Effective Core Potentials and Core Polarization Potentials, we model these systems as effective three valence electron systems, allowing for calculation of electronic properties with Full Configuration Interaction. The potential curve and the permanent dipole moment of the $^2\\Sigma^+$ ground state are determined as functions of the internuclear distances for LiSr, NaSr, KSr, RbSr, and CsSr molecules. These molecules are found to exhibit a significant permanent dipole moment, though smaller than those of the alkali-Rb molecules.

  14. Ground state of the polar alkali-metal-atom-strontium molecules: Potential energy curve and permanent dipole moment

    SciTech Connect (OSTI)

    Guerout, R. [Laboratoire Kastler-Brossel, CNRS, ENS, Univ Pierre et Marie Curie case 74, Campus Jussieu, F-75252 Paris Cedex 05 (France); Aymar, M.; Dulieu, O. [Laboratoire Aime Cotton, CNRS, UPR3321, Bat. 505, Univ Paris-Sud, F-91405 Orsay Cedex (France)

    2010-10-15T23:59:59.000Z

    In this study, we investigate the structure of the polar alkali-metal-atom-strontium diatomic molecules as possible candidates for the realization of samples of ultracold polar molecular species not yet investigated experimentally. Using a quantum chemistry approach based on effective core potentials and core polarization potentials, we model these systems as effective three-valence-electron systems, allowing for calculation of electronic properties with full configuration interaction. The potential curve and the permanent dipole moment of the {sup 2}{Sigma}{sup +} ground state are determined as functions of the internuclear distance for LiSr, NaSr, KSr, RbSr, and CsSr molecules. These molecules are found to exhibit a significant permanent dipole moment, though smaller than those of the alkali-metal-atom-Rb molecules.

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

    SciTech Connect (OSTI)

    Peter Kelly Sokolowski

    2007-12-01T23:59:59.000Z

    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.

  16. 2452 IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 39, NO. 11, NOVEMBER 2011 Permanent-Magnet Helicon Discharge Array

    E-Print Network [OSTI]

    Chen, Francis F.

    entail large and heavy electromagnets and their dc power supplies. Annular permanent magnets can produce, which consists of an array of eight tubes driven in parallel by a 3.2-kW RF supply at 13.56 MHz. Between water. The three-turn m = 0 antennas are of 1/8-in-diameter (3.2-mm-diameter) cop- per tubing

  17. A Novel Current Angle Control Scheme in a Current Source Inverter Fed Permanent Magnet Synchronous Motor Drive for Automotive Applications

    SciTech Connect (OSTI)

    Tang, Lixin [ORNL] [ORNL; Su, Gui-Jia [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    This paper describes a novel speed control scheme to operate a current source inverter (CSI) driven surface-mounted permanent magnet synchronous machine (SPMSM) for hybrid electric vehicles (HEVs) applications. The idea is to use the angle of the current vector to regulate the rotor speed while keeping the two dc-dc converter power switches on all the time to boost system efficiency. The effectiveness of the proposed scheme was verified with a 3 kW CSI-SPMSM drive prototype.

  18. Control technology assessment of hazardous waste disposal operations in chemicals manufacturing: walk-through survey report of E. I. Du Pont de Nemours and Company, Chambers Works, Deepwater, New Jersey

    SciTech Connect (OSTI)

    Anastas, M.

    1984-01-01T23:59:59.000Z

    A walk through survey was conducted to assess control technology for hazardous wastes disposal operations at du Pont de Nemours and Company (SIC-2800), Deepwater, New Jersey in November 1981. Hazardous wastes generated at the facility were disposed of by incineration, wastewater and thermal treatment, and landfilling. Engineering controls for the incineration process and at the landfill were noted. At the landfill, water from a tank trailer was sprayed periodically to suppress dust generation. Vapor control devices, such as spot scrubbers, were used during transfer of organic wastes from trailers and drums to storage prior to incineration. Wastes were also recirculated to prevent build up of grit in the strainers. The company conducted area monitoring for nitrobenzene (98953) and amines at the landfill and personal monitoring for chloramines at the incinerator. Half mask dust respirators were worn by landfill operators. Operators who unloaded and emptied drums at the incinerator were required to wear face masks, rubber gloves, and boots. The author concludes that disposal of hazardous wastes at the facility is state of the art. An in depth survey is recommended.

  19. Comparison of 3 different postimplant dosimetry methods following permanent {sup 125}I prostate seed brachytherapy

    SciTech Connect (OSTI)

    Marcu, Loredana G., E-mail: loredana@marcunet.com [Department of Medical Physics, Royal Adelaide Hospital, South Australia (Australia); Faculty of Science, University of Oradea (Romania); School of Chemistry and Physics, University of Adelaide, South Australia (Australia); Gowda, Raghu [Department of Radiation Oncology, Royal Adelaide Hospital, South Australia (Australia)

    2013-10-01T23:59:59.000Z

    Postimplant dosimetry (PID) after Iodine-125 ({sup 125}I) implant of the prostate should offer a reliable qualitative assessment. So far, there is no consensus regarding the optimum PID method, though the latest literature is in favor of magnetic resonance imaging (MRI). This study aims to simultaneously compare 3 PID techniques: (1) MRI-computed tomography (CT) fusion; (2) ultrasound (US)-CT fusion; and (3) manual target delineation on CT. The study comprised 10 patients with prostate cancer. CT/MR scans with urinary catheters in place for PID were done either on day 0 or day 1 postimplantation. The main parameter evaluated and compared among methods was target D90. The results show that CT-based D90s are lower than US-CT D90s (median difference,?6.85%), whereas MR-CT PID gives higher D90 than US-CT PID (median difference, 4.25%). Manual contouring on CT images tends to overestimate the prostate volume compared with transrectal ultrasound (TRUS) (median difference, 23.33%), whereas on US images the target is overestimated compared with MR-based contouring (median difference, 13.25%). Although there are certain differences among the results given by various PID techniques, the differences are statistically insignificant for this small group of patients. Any dosimetric comparison between 2 PID techniques should also account for the limitations of each technique, to allow for an accurate quantification of data. Given that PID after permanent radioactive seed implant is mandatory for quality assurance, any imaging method–based PID (MR-CT, US-CT, and CT) available in a radiotherapy department can be indicative of the quality of the procedure.

  20. 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

    2013-12-17T23:59:59.000Z

    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.

  1. Long-Term Outcome for Clinically Localized Prostate Cancer Treated With Permanent Interstitial Brachytherapy

    SciTech Connect (OSTI)

    Taira, Al V. [Department of Radiation Oncology, University of Washington, Seattle, Washington (United States); Merrick, Gregory S., E-mail: gmerrick@urologicresearchinstitute.or [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, West Virginia (United States); Butler, Wayne M.; Galbreath, Robert W.; Lief, Jonathan [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, West Virginia (United States); Adamovich, Edward [Department of Pathology, Wheeling Hospital, Wheeling, West Virginia (United States); Wallner, Kent E. [Puget Sound Healthcare Corporation, Group Health Cooperative, University of Washington, Seattle, Washington (United States)

    2011-04-01T23:59:59.000Z

    Purpose: To present the largest series of prostate cancer brachytherapy patients treated with modern brachytherapy techniques and postimplant day 0 dosimetric evaluation. Methods and Materials: Between April 1995 and July 2006, 1,656 consecutive patients were treated with permanent interstitial brachytherapy. Risk group stratification was carried out according to the Mt. Sinai guidelines. Median follow-up was 7.0 years. The median day 0 minimum dose covering at least 90% of the target volume was 118.8% of the prescription dose. Cause of death was determined for each deceased patient. Multiple clinical, treatment, and dosimetric parameters were evaluated for impact on the evaluated survival parameters. Results: At 12 years, biochemical progression-free survival (bPFS), cause-specific survival (CSS), and overall survival (OS) for the entire cohort was 95.6%, 98.2%, and 72.6%, respectively. For low-, intermediate-, and high-risk patients, bPFS was 98.6%, 96.5%, and 90.5%; CSS was 99.8%, 99.3%, and 95.2%; and OS was 77.5%, 71.1%, and 69.2%, respectively. For biochemically controlled patients, the median posttreatment prostate-specific antigen (PSA) concentration was 0.02 ng/ml. bPFS was most closely related to percent positive biopsy specimens and risk group, while Gleason score was the strongest predictor of CSS. OS was best predicted by patient age, hypertension, diabetes, and tobacco use. At 12 years, biochemical failure and cause-specific mortality were 1.8% and 0.2%, 5.1% and 2.1%, and 10.4% and 7.1% for Gleason scores 5 to 6 and 7 and {>=}8, respectively. Conclusions: Excellent long-term outcomes are achievable with high-quality brachytherapy for low-, intermediate-, and high-risk patients. These results compare favorably to alternative treatment modalities including radical prostatectomy.

  2. Vacuum Potentials for the Two Only Permanent Free Particles, Proton and Electron. Pair Productions

    E-Print Network [OSTI]

    J. X. Zheng-Johansson

    2015-02-26T23:59:59.000Z

    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.

  3. Frequent biphasic cellular responses of permanent fish cell cultures to deoxynivalenol (DON)

    SciTech Connect (OSTI)

    Pietsch, Constanze, E-mail: constanze.pietsch@unibas.ch [University Basel, Man-Society-Environment, Department of Environmental Sciences, Vesalgasse 1, CH-4051 Basel (Switzerland); Bucheli, Thomas D.; Wettstein, Felix E. [Agroscope Reckenholz-Taenikon (ART), Research Station ART, Reckenholzstrasse 191, CH-8046 Zuerich (Switzerland); Burkhardt-Holm, Patricia [University Basel, Man-Society-Environment, Department of Environmental Sciences, Vesalgasse 1, CH-4051 Basel (Switzerland)

    2011-10-01T23:59:59.000Z

    Contamination of animal feed with mycotoxins is a major problem for fish feed mainly due to usage of contaminated ingredients for production and inappropriate storage of feed. The use of cereals for fish food production further increases the risk of a potential contamination. Potential contaminants include the mycotoxin deoxynivalenol (DON) which is synthesized by globally distributed fungi of the genus Fusarium. The toxicity of DON is well recognized in mammals. In this study, we confirm cytotoxic effects of DON in established permanent fish cell lines. We demonstrate that DON is capable of influencing the metabolic activity and cell viability in fish cells as determined by different assays to indicate possible cellular targets of this toxin. Evaluation of cell viability by measurement of membrane integrity, mitochondrial activity and lysosomal function after 24 h of exposure of fish cell lines to DON at a concentration range of 0-3000 ng ml{sup -1} shows a biphasic effect on cells although differences in sensitivity occur. The cell lines derived from rainbow trout are particularly sensitive to DON. The focus of this study lies, furthermore, on the effects of DON at different concentrations on production of reactive oxygen species (ROS) in the different fish cell lines. The results show that DON mainly reduces ROS production in all cell lines that were used. Thus, our comparative investigations reveal that the fish cell lines show distinct species-related endpoint sensitivities that also depend on the type of tissue from which the cells were derived and the severity of exposure. - Highlights: > DON uptake by cells is not extensive. > All fish cell lines are sensitive to DON. > DON is most cytotoxic to rainbow trout cells. > Biphasic cellular responses were frequently observed. > Our results are similar to studies on mammalian cell lines.

  4. ADJUSTMENT OF STATUS TO PERMANENT RESIDENT Adjustment of Status, filed on form I-485, is your personal application to the U.S. government

    E-Print Network [OSTI]

    Scharer, John E.

    months in most countries, but can vary must apply in country of birth or legal permanent residence exam and interview overseas must obtain police certificates from every country where applicant

  5. Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Concentrated Windings

    SciTech Connect (OSTI)

    Lawler, J.S.

    2005-12-21T23:59:59.000Z

    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.

  6. Radial-Gap Permanent Magnet Motor and Drive Research FY 2004

    SciTech Connect (OSTI)

    McKeever, J.W.

    2005-02-11T23:59:59.000Z

    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.

  7. Environmentally Benign and Permanent Modifications to Prevent Biofouling on Marine and Hydrokinetic Devices

    SciTech Connect (OSTI)

    Zheng Zhang

    2012-04-19T23:59:59.000Z

    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.

  8. 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

    2015-01-01T23:59:59.000Z

    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.

  9. 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)

    2014-05-07T23:59:59.000Z

    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.

  10. Site Characterization Report ORGDP Diffusion Facilities Permanent Shutdown K-700 Power House and K-27 Switch Yard/Switch House

    SciTech Connect (OSTI)

    Thomas R.J., Blanchard R.D.

    1988-06-13T23:59:59.000Z

    The K-700 Power House area, initially built to supply power to the K-25 gaseous diffusion plant was shutdown and disassembled in the 1960s. This shutdown was initiated by TVA supplying economical power to the diffusion plant complex. As a result of world wide over production of enriched, reactor grade U{sup 235}, the K-27 switch yard and switch house area was placed in standby in 1985. Subsequently, as the future production requirements decreased, the cost of production increased and the separation technologies for other processes improved, the facility was permanently shutdown in December, 1987. This Site Characterization Report is a part of the FY-88 engineering Feasibility Study for placing ORGDP Gaseous Diffusion Process facilities in 'Permanent Shutdown'. It is sponsored by the Department of Energy through Virgil Lowery of Headquarters--Enrichment and through Don Cox of ORO--Enrichment Operations. The primary purpose of these building or site characterization reports is to document, quantify, and map the following potential problems: Asbestos; PCB containing fluids; Oils, coolants, and chemicals; and External contamination. With the documented quantification of the concerns (problems) the Engineering Feasibility Study will then proceed with examining the potential solutions. For this study, permanent shutdown is defined as the securing and/or conditioning of each facility to provide 20 years of safe service with minimal expenditures and, where feasible, also serving DOE's needs for long-term warehousing or other such low-risk use. The K-700 power house series of buildings were either masonry construction or a mix of masonry and wood. The power generating equipment was removed and sold as salvage in the mid 1960s but the buildings and auxiliary equipment were left intact. The nine ancillary buildings in the power house area use early in the Manhattan Project for special research projects, were left intact minus the original special equipment. During the late 1960s and 1970s, some of the abandoned buildings were used for offices, special projects, and storage. Some of the remaining electrical transformers contain PCBs in concentrations less than 500 ppm. Many of the steam and hot water pipes in the buildings are insulated with asbestos insulation, but none of the equipment or buildings have high counts of surface radioactive contamination. The general conditions of the buildings are from fair to poor. Many should be boarded-up to prevent personnel entry and in some cases demolitions would be the safer alternative.

  11. 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.

    2007-11-30T23:59:59.000Z

    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.

  12. Iron-Nickel-Based SuperMagnets: Multiscale Development of L10 Materials for Rare Earth-Free Permanent Magnets

    SciTech Connect (OSTI)

    None

    2012-01-01T23:59:59.000Z

    REACT Project: Northeastern University will develop bulk quantities of rare-earth-free permanent magnets with an iron-nickel crystal structure for use in the electric motors of renewable power generators and EVs. These materials could offer magnetic properties that are equivalent to today’s best commercial magnets, but with a significant cost reduction and diminished environmental impact. This iron-nickel crystal structure, which is only found naturally in meteorites and developed over billions of years in space, will be artificially synthesized by the Northeastern University team. Its material structure will be replicated with the assistance of alloying elements introduced to help it achieve superior magnetic properties. The ultimate goal of this project is to demonstrate bulk magnetic properties that can be fabricated at the industrial scale.

  13. Long-term climate change assessment study plan for the Hanford Site Permanent Isolation Barrier Development Program. Revision 1

    SciTech Connect (OSTI)

    Petersen, K.L. [Westinghouse Hanford Co., Richland, WA (United States); Chatters, J.C. [Pacific Northwest Lab., Richland, WA (United States); Waugh, W.J. [Chem-Nuclear Geotech, Inc., Grand Junction, CO (United States)

    1993-05-01T23:59:59.000Z

    The Hanford Site Permanent Isolation Barrier Development Program (Barrier Development Program) was organized to develop the technology needed to provide an in-place disposal capability for low-level nuclear waste for the US Department of Energy at the Hanford Site in south-central Washington. The goal of the Barrier Development Program is 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 yr; 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-yr design life.

  14. Elephant butte powerplant investigation of permanent magnet generator corrosion and bearing failures. Project notes 8450-97-07. Technical memo

    SciTech Connect (OSTI)

    Price, P.; Atwater, P.

    1997-04-01T23:59:59.000Z

    This investigation and report were initiated in response to a request to determine causes for excessive corrosion and premature bearing failures on the Woodward Permanent Magnet Generator (PMG) on the three main generating units at Elephant Butte. All three main generating units were rewound using epoxy-type insulating materials between 1989 and 1991. Plant personnel reported that corrosion and failure rates seemed to accelerate after the new stator windings were installed. This report documents field testing conducted the week of March 10, 1997, to determine if stray electrical currents/voltages were causing the problems. Electrical field test results indicate that accelerated PMG bearing failure and corrosion were not caused by stray voltages or current. Tests were conducted on the main shaft in the turbine pit and on the PMG shaft and housing located atop the exciter shaft.

  15. Market efficiency and the long-memory of supply and demand: Is price impact variable and permanent or fixed and temporary?

    E-Print Network [OSTI]

    Market efficiency and the long-memory of supply and demand: Is price impact variable and permanent vs. seller initiated transactions. For example, during a period where there is an excess of buyer initiated transactions, there is also more liquidity for buy orders than sell orders, so that buy orders

  16. Advances in nanostructured permanent magnets research This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Liu, J. Ping

    motors and wind turbine generators using permanent magnets are more energy efficient compared with other/12/2012 at 05:16 Please note that terms and conditions apply. View the table of contents for this issue, or go conditions on interphase exchange interactions are given. Synthesis techniques for hard magnetic

  17. Physics-Astronomy Library Permanent Reserve Collection -Loan Periods Vary (revised 8/27/2010) AUTHOR TITLE E-BOOK CALL NUMBER

    E-Print Network [OSTI]

    Wurtele, Jonathan

    Physics-Astronomy Library Permanent Reserve Collection - Loan Periods Vary (revised 8, 3rd ed. QA 931 L283 1986 Shu, F.H. Physical Universe QB 43.2 S54 1982 Chaisson, E., et al Astronomy: A Beginner's Guide to the Universe, 5th ed. QB 43.3 C43 2007 Chaisson, E., et al Astronomy Today, 5th ed. QB

  18. arXiv:1103.2923v1[math.OC]15Mar2011 Estimation of Saturation of Permanent-Magnet

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    a parametric model of the saturated Permanent-Magnet Synchronous Motor (PMSM) together with an estimation on a surface-mounted PMSM and an interoir magnet PMSM illustrate the relevance of the approach. Index Terms (PMSM) at low velocity remains a challenging task. Most of the existing control algorithms rely

  19. IEEE Transactions on Energy Conversion, Vol. 14, No. 4, December 1999 1043 OptimalCurrent Control Strategies for Surface-MountedPermanent-Magnet

    E-Print Network [OSTI]

    Chapman, Patrick

    . There has been considerable work in the area of choosing optimal current excitation of PMSM drives minimizing the rms stator Permanent-magnet synchronous machine (PMSM) drives current was set forth in [6 that In designing PMSM drives, two factors Of interest are would he difficult to implement in a real-time control

  20. 2528 IEEE TRANSACTIONS ON MAGNETICS, VOL. 43, NO. 6, JUNE 2007 A Highly Efficient 200 000 RPM Permanent Magnet Motor System

    E-Print Network [OSTI]

    Wu, Thomas

    presents the development of an ultra-high-speed permanent magnet synchronous motor (PMSM) that produces large iron loss at high-speed. In ultra-high-speed applications, PMSM offers the advantage of high efficiency, and high stability, is generally considered for high performance PMSM control. However, for ultra

  1. Deepwater Internal Wave Study and Application

    E-Print Network [OSTI]

    Jiang, Lei

    2013-12-10T23:59:59.000Z

    and ocean currents. Although their effects on floating drilling platforms and their riser systems have not been extensively studied, in the past these waves have seriously disrupted offshore exploration and drilling operations. In particular, a drill pipe...

  2. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S. DepartmenttoJune 16,AprilFrankDavis-Bacon3,AprilofThe

  3. Data from Deepwater Horizon | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Deliciouscritical_materials_workshop_presentations.pdfSTD-1040-93DecemberofDepartment of EnergyDepartment

  4. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered energy consumption byAbout SRNL HomeYoungClean EnergyContact NETLcontacts4

  5. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered energy consumption byAbout SRNLBuildingsScattering at JLab8,Diamond7-003 Science

  6. 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 Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revision has been approved forDaytonCounty,Deepi has

  7. LIVE: Meeting on Strengthening Deepwater Blowout Containment...

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

    leaders to discuss how to strengthen capabilities for responding to potential blowouts of oil and gas wells on the Outer Continental Shelf. The panel discussion will help guide...

  8. On-the-fly machine-learning for high-throughput experiments: search for rare-earth-free permanent magnets

    SciTech Connect (OSTI)

    Kusne, Aaron Gilad [University of Maryland; Gao, Tieren [University of Maryland; Mehta, Apurva [SLAC National Accelerator Laboratory; Ke, Liqin [Ames Laboratory; Nguyen, Manh Cuong [Ames Laboratory; Ho, Kai-Ming [Ames Laboratory; Antropov, Vladimir [Ames Laboratory; Wang, Cai-Zhuang [Ames Laboratory; Kramer, Matthew J [Ames Laboratory; Long, Christian [University of Maryland; Takeuchi, Ichiro [University of Maryland

    2014-09-15T23:59:59.000Z

    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.

  9. 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.

    2007-07-31T23:59:59.000Z

    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.

  10. The influence of microstructure on magnetic properties of nanocrystalline Fe-Pt-Nb-B permanent magnet ribbons

    SciTech Connect (OSTI)

    Randrianantoandro, N.; Greneche, J. M. [Laboratoire de Physique de l'Etat Condense, UMR CNRS 6087, Universite du Maine, 72085 Le Mans cedex 9 (France); Crisan, A. D. [Laboratoire de Physique de l'Etat Condense, UMR CNRS 6087, Universite du Maine, 72085 Le Mans cedex 9 (France); National Institute for Materials Physics, P.O. Box MG-7, 76900 Bucharest (Romania); Crisan, O. [National Institute for Materials Physics, P.O. Box MG-7, 76900 Bucharest (Romania); Marcin, J.; Kovac, J.; Hanko, J.; Skorvanek, I. [Institute of Experimental Physics, Slovak Academy of Sciences, 043 53 Kosice (Slovakia); Svec, P. [Institute of Physics, SAS, Dubravska cesta 9, 84228 Bratislava (Slovakia); Chrobak, A. [August Chelkowski Institute of Physics, University of Silesia, 40-007 Katowice (Poland)

    2010-11-15T23:59:59.000Z

    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.

  11. Results from a prototype permanent magnet dipole-quadrupole hybrid for the PEP-II B-factory

    SciTech Connect (OSTI)

    Sullivan, M.; Bowden, G.; Ecklund, S. [and others

    1997-06-01T23:59:59.000Z

    We describe the construction of a prototype hybrid permanent magnet dipole and quadrupole. The magnet consists of two concentric rings of Sm{sub 2}Co{sub 17} magnetic material 5 cm in length. The outer ring is made of 16 uniformly magnetized blocks assembled as a Halbach dipole and the inner ring has 32 blocks oriented in a similar fashion so as to generate a quadrupole field. The resultant superimposed field is an offset quadrupole field which allows us to center the field on the high-energy beam in the interaction region of the PEP-II B-factory. The dipole blocks are glued to the inside surface of an outer support collar and the quadrupole blocks are held in a fixture that allows radial adjustment of the blocks prior to potting the entire assembly with epoxy. An extensive computer model of the magnet has been made and from this model we developed a tuning algorithm that allowed us to greatly reduce the n=3 17 harmonics of the magnet.

  12. 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. [Westinghouse Hanford Co., Richland, WA (US); Chatters, J.C. [Pacific Northwest Lab., Richland, WA (US)

    1993-07-01T23:59:59.000Z

    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.

  13. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation InExplosion Monitoring:Home| Visitors| Education| REU|Archaeal Science A

  14. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven AshbyDepartment ofGE'sOptimizationUSING C RAY'SDOE/WIPP

  15. First report of a permanent breast {sup 103}Pd seed implant as adjuvant radiation treatment for early-stage breast cancer

    SciTech Connect (OSTI)

    Pignol, Jean-Philippe [Department of Radiation Oncology, Sunnybrook and Women's Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada)]. E-mail: Jean-Philippe.Pignol@sw.ca; Keller, Brian [Department of Radiation Oncology, Sunnybrook and Women's Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Rakovitch, Eileen [Department of Radiation Oncology, Sunnybrook and Women's Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Sankreacha, Raxa [Department of Radiation Oncology, Sunnybrook and Women's Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Easton, Harry [Department of Radiation Oncology, Sunnybrook and Women's Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada); Que, William [Department of Radiation Oncology, Sunnybrook and Women's Health Sciences Centre, University of Toronto, Toronto, Ontario (Canada)

    2006-01-01T23:59:59.000Z

    Purpose: A new technique of adjuvant partial breast irradiation using {sup 103}Pd permanent breast seed implants (PBSI) is presented. The procedure is performed in a single 1-hour session under local anesthesia. Methods and Materials: Patients referred to a single institution for adjuvant radiotherapy after lumpectomy for an infiltrating ductal carcinoma {<=}3 cm in diameter, surgical margin {>=}2 mm, no extensive in situ carcinoma, no lymphovascular invasion, and minimal or negative lymph node involvement were offered a PBSI. Results: Between May and December 2004, 31 eligible patients underwent CT scan and ultrasound simulations assessing PBSI feasibility. Fifteen were excluded because of feasibility issues, and 16 received PBSI. A minimal peripheral dose of 90 Gy was prescribed to the planning target volume corresponding to the clinical target volume identified on the CT scan plus a margin of 1 cm. The procedure was well tolerated; 56% of the patients reported no pain during the procedure, and 46% of the patients developed National Cancer Institute Common Toxicity Criteria Grade 1 acute reaction. None experienced toxicity Grade 2 or 3. Conclusions: Permanent breast seed implantation seems feasible and well tolerated on these preliminary clinical data and represents an ultimate step in the reduction of treatment fraction for partial breast irradiation.

  16. 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. [Department of Chemistry, University of Rochester, Rochester, New York 14627 (United States)

    2014-03-21T23:59:59.000Z

    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.

  17. Control of Surface Mounted Permanent Magnet Motors with Special Application to Fractional-Slot Motors with Concentrated Windings

    SciTech Connect (OSTI)

    McKeever, John W [ORNL; Patil, Niranjan [University of Tennessee, Knoxville (UTK); Lawler, Jack [ORNL

    2007-07-01T23:59:59.000Z

    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.

  18. 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 [University of Alabama] [University of Alabama; Haskew, Timothy [University of Alabama] [University of Alabama; Myryasov, Oleg [University of Alabama] [University of Alabama; Jin, Sungho [University of California San Diego] [University of California San Diego; Berkowitz, Ami [University of California San Diego] [University of California San Diego

    2014-06-05T23:59:59.000Z

    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.

  19. 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

    2008-01-01T23:59:59.000Z

    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.

  20. Radiation dose to the internal pudendal arteries from permanent-seed prostate brachytherapy as determined by time-of-flight MR angiography

    SciTech Connect (OSTI)

    Gillan, Caitlin [Department of Radiation Medicine, University Health Network, Princess Margaret Hospital, Toronto (Canada); Kirilova, Anna [Department of Radiation Physics, University Health Network, Princess Margaret Hospital, Toronto (Canada); Landon, Angela [Department of Radiation Medicine, University Health Network, Princess Margaret Hospital, Toronto (Canada); Yeung, Ivan [Department of Radiation Physics, University Health Network, Princess Margaret Hospital, Toronto (Canada); Pond, Gregory [Department of Biostatistics, University Health Network, Princess Margaret Hospital, Toronto (Canada); Crook, Juanita [Department of Radiation Oncology, University Health Network, Princess Margaret Hospital, Toronto (Canada)]. E-mail: juanita.crook@rmp.uhn.on.ca

    2006-07-01T23:59:59.000Z

    Purpose: To determine the feasibility of time-of-flight magnetic resonance (MR) angiography to visualize the internal pudendal arteries (IPAs) in potent men undergoing permanent-seed prostate brachytherapy and to calculate the radiation dose received by these arteries. Methods and Materials: Prostate brachytherapy is performed at the University Health Network/Princess Margaret Hospital by use of transrectal ultrasound (TRUS) preplanning and preloaded needles. All patients received {sup 125}I, with a mean seed activity of 0.32 mCi/seed (0.41 U). Postplan evaluation is performed at 1 month by magnetic resonance-computed tomography fusion. Twenty consecutive potent men had time-of-flight MR angiography as part of their postplan evaluation. Results: The mean V100 was 96.5%, and the mean D90 was171.5 Gy. The IPAs were easily visualized for 18 of the 20 men. The mean peak dose received by the IPA was 17 Gy. The highest peak dose received by any patient was 38.2 Gy, with only 1 other patient receiving a peak dose greater than 30 Gy. Eleven of 18 had a measurable portion of at least 1 IPA that received 10% of the prescribed dose (V10 = 14.5 Gy). Only 2 patients had nonzero values for V25. The distal third of the IPA received the highest dose for 16 of the 18 patients. Conclusions: The IPAs can be well visualized in the majority of potent men by use of time-of-flight MR angiography 1 month after brachytherapy. The IPAs receive a low but calculable dose from permanent-seed {sup 125}I brachytherapy. Further research is needed to determine if this outcome has any correlation with subsequent potency.

  1. Design of a compact, permanent magnet electron cyclotron resonance ion source for proton and H{sub 2}{sup +} beam production

    SciTech Connect (OSTI)

    Jia Xianlu; Zhang Tianjue; Wang Chuan; Zheng Xia; Yin Zhiguo; Zhong Junqing; Wu Longcheng; Qin Jiuchang [China Institute of Atomic Energy, P.O. Box 275(3), Beijing 102413 (China); Luo Shan [The 6th Department, Communication Command Academy, Wuhan 430010 (China)

    2010-02-15T23:59:59.000Z

    A 2.45 GHz microwave ion source was developed at China Institute of Atomic Energy (CIAE) for proton beam production of over 60 mA [B.-Q. Cui, Y.-W. Bao, L.-Q. Li, W.-S. Jiang, and R.-W. Wang, Proceedings of the High Current Electron Cyclotron Resonance (ECR) Ion Source for Proton Accelerator, APAC-2001, 2001 (unpublished)]. For various proton beam applications, another 2.45 GHz microwave ion source with a compact structure is designed and will be built at CIAE as well for high current proton beam production. It is also considered to be used for the test of H{sub 2}{sup +} beam, which could be injected into the central region model cyclotron at CIAE, and accelerated to 5 MeV before extraction by stripping. The required ECR magnetic field is supplied by all the permanent magnets rather than electrical solenoids and six poles. The magnetic field distribution provided by this permanent magnets configuration is a large and uniformly volume of ECR zone, with central magnetic field of a magnitude of {approx}875 Gs[T. Taylor and J. S. C. Wills, Nucl. Instrum. Methods Phys. Res. A 309, 37 (1991)]. The field adjustment at the extraction end can be implemented by moving the position of the magnet blocks. The results of plasma, coupling with 2.45 GHz microwave in the ECR zone inside the ion source are simulated by particle-in-cell code to optimize the density by adjusting the magnetic field distribution. The design configuration of the ion source will be summarized in the paper.

  2. Effect of availability on multi-period planning of subsea oil and gas production systems

    E-Print Network [OSTI]

    Ruiz Vasquez, Karla Liliana

    2009-05-15T23:59:59.000Z

    2.2.5.4 Fetkovich............................................................ 22 2.3 Network System (Surface Facilities)........................................ 24 2.4 Principal Production Constraints... of an aquifer, find out the water influx and predict the reservoir behavior as well as the reservoir pressure profile5,8. The simplest form to express the material balance expression on volumetric basis was stated in 1936 by Schilthuis and can be summarize...

  3. Assessment of seismic risk for subsea production systems in the Gulf of Mexico

    E-Print Network [OSTI]

    Brown, Laura Ann

    2004-09-30T23:59:59.000Z

    Waters in Contiguous United States (API 2000 a,b)..........................................................................................................42 3.2. Recorded Earthquakes in GOM Region and Bay of Campeche Region (Latitude Range 18° - 32... in Bay of Campeche Region (Latitude Range 18° to 20° and Longitude Range -98° to -90° ) (USGS 2003)........................................44 4.1. Dimensions and Weights of Modules (Goodfellow Associates 1990) .................... 53...

  4. Aprovaci de l'oferta de formaci permanent del curs 2014-15 Acord nm. 169/2014 del Consell de Govern pel qual s'aprova l'oferta de formaci

    E-Print Network [OSTI]

    Yannuzzi Sanchez, Marcelo

    FORMACI� PERMANENT DE POSTGRAU. CURS 2014-15. ARQUITECTURA, EDIFICACI� I URBANISME Màster Nom del programa Universitats participants Unitat acadèmica o Ens Vinculat Edició Lloc d'impartició Arquitectura del Paisatge Departament d'Urbanisme i Ordenació del Territori 32 Barcelona Arquitectura i Medi Ambient: Integració d

  5. Projecting the range of potential future climate change as an aid in the assessment of the effectiveness of the Hanford Site Permanent Isolation Barrier

    SciTech Connect (OSTI)

    Petersen, K.L.

    1993-10-01T23:59:59.000Z

    The Hanford Site Permanent Isolation Barrier Development Program was organized to develop an in-place disposal capability for low-level nuclear waste for the US Department of Energy at the Hanford Site in south-eastern Washington. Layered earthen and engineered barriers are being developed by Westinghouse Hanford Company and the Pacific Northwest Laboratory that will function in what is presently a semiarid environment (annual precipitation 150 mm) for at least 1,000 yr by limiting the infiltration of water through the waste. The Long-Term Climate Change Task is one of several key barrier tasks. Based on the recommendation of a panel of internationally recognized climate and modeling experts, climatic data for this task is being acquired in a step-wise and multi-disciplinary manner. The specific research strategy includes literature review and specialized studies to obtain pollen-derived climatic reconstruction, documented historic weather patterns, and Global Circulation Model output of potential future climate changes related to both the greenhouse effect and the cycling into the next ice age. The specific goals of the task are to: (1) obtain defensible probabilistic projections of the long-term climate variability in the Hanford Site region at many different time scales into the future, (2) develop several test case climate scenarios that bracket the range of potential future climate, and (3) use the climate scenarios both to test and to model protective barrier performance.

  6. Postoperative Nomogram Predicting the 9-Year Probability of Prostate Cancer Recurrence After Permanent Prostate Brachytherapy Using Radiation Dose as a Prognostic Variable

    SciTech Connect (OSTI)

    Potters, Louis, E-mail: LPotters@nshs.ed [Department of Radiation Medicine, North Shore Long Island Jewish Health System, New Hyde Park, NY (United States); Roach, Mack [Departments of Radiation Oncology and Urology, University of California at San Francisco, San Francisco, CA (United States); Davis, Brian J. [Department of Radiation Oncology, Mayo Clinic, Rochester, MN (United States); Stock, Richard G. [Department of Radiation Oncology, Mount Sinai School of Medicine, New York, NY (United States); Ciezki, Jay P. [Department of Radiation Oncology, Cleveland Clinic, Cleveland, OH (United States); Zelefsky, Michael J. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Stone, Nelson N. [Department of Urology, Mount Sinai School of Medicine, New York, NY (United States); Fearn, Paul A. [Department of Urology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Yu Changhong [Glickman Urological Institute and the Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH (United States); Shinohara, Katsuto [Departments of Radiation Oncology and Urology, University of California at San Francisco, San Francisco, CA (United States); Kattan, Michael W. [Glickman Urological Institute and the Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH (United States)

    2010-03-15T23:59:59.000Z

    Purpose: To report a multi-institutional outcomes study on permanent prostate brachytherapy (PPB) to 9 years that includes postimplant dosimetry, to develop a postimplant nomogram predicting biochemical freedom from recurrence. Methods and Materials: Cox regression analysis was used to model the clinical information for 5,931 patients who underwent PPB for clinically localized prostate cancer from six centers. The model was validated against the dataset using bootstrapping. Disease progression was determined using the Phoenix definition. The biological equivalent dose was calculated from the minimum dose to 90% of the prostate volume (D90) and external-beam radiotherapy dose using an alpha/beta of 2. Results: The 9-year biochemical freedom from recurrence probability for the modeling set was 77% (95% confidence interval, 73-81%). In the model, prostate-specific antigen, Gleason sum, isotope, external beam radiation, year of treatment, and D90 were associated with recurrence (each p < 0.05), whereas clinical stage was not. The concordance index of the model was 0.710. Conclusion: A predictive model for a postimplant nomogram for prostate cancer recurrence at 9-years after PPB has been developed and validated from a large multi-institutional database. This study also demonstrates the significance of implant dosimetry for predicting outcome. Unique to predictive models, these nomograms may be used a priori to calculate a D90 that likely achieves a desired outcome with further validation. Thus, a personalized dose prescription can potentially be calculated for each patient.

  7. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICEAmesApplication2 (CRAC 2SSRL27 Users'weeklyJuneAreAre

  8. 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.

    1998-08-01T23:59:59.000Z

    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.

  9. 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

    2012-05-18T23:59:59.000Z

    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.

  10. PERMANENT RESIDENCE EMPLOYMENT-BASED

    E-Print Network [OSTI]

    national is the principal investigator. · Evidence showing membership in associations in the academic field publications written by others about the foreign national's work in the academic field. This can include copies of book reviews, or articles highlighting the faculty member's work. The faculty member's work should

  11. Permanent magnet thermal energy system

    SciTech Connect (OSTI)

    Gerard, F.

    1985-04-16T23:59:59.000Z

    An improved rotary magnet thermal generator system of the type having an array of magnets in alternating disposition coaxially disposed about and parallel with the shaft of a motor driving the rotary array and having a copper heat absorber and a ferro-magnetic plate fixed on a face of the heat absorber, includes as efficiency improver a plurality of heat sink plates extending beyond the ferro-magnet plate into a plenum through a respective plurality of close-fitting apertures. In a further embodimetn the heat sink plates are in thermal contact with sinusoidally convoluted tubing that both increases surface area and provides for optional heating of gases and/or fluids at the same time.

  12. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500IIVasudhaSurface.Laboratory inApprovedRegionalDOE

  13. 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.

    2003-02-27T23:59:59.000Z

    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.

  14. 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. (U. Tennessee-Knoxville); McKeever, J.W.; Downing, M.E.; Stahlhut, R.D (John Deere); Bremmer, R. (John Deere); Shoemaker, J.M. (John Deere); Seksarian, A.K. (john Deere); Poore, B. (John Deere); Lutz, J. (UQM)

    2006-05-01T23:59:59.000Z

    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%.

  15. Microstructual investigation of mixed rar earth iron boron processed vis melt-spinning and high-pressure gas-atomization for isotrophic bonded permanent magnets

    SciTech Connect (OSTI)

    Buelow, Nicholas Lee

    2005-08-01T23:59:59.000Z

    A solid solution of three rare earths (RE) in the RE{sub 2}Fe{sub 14}B structure have been combined to create the novel mixed rare earth iron boron (MRE{sub 2}Fe{sub 14}B) alloy family. MRE{sub 2}Fe{sub 14}B exhibits reduced temperature dependent magnetic properties; remanence and coercivity. The desired form of MRE{sub 2}Fe{sub 14}B is a powder that can be blended with a polymer binder and compression or injection molded to form an isotropic polymer bonded permanent magnet (PBM). Commercially, Nd{sub 2}Fe{sub 14}B is the alloy of choice for PBMs. Powders of Nd{sub 2}Fe{sub 14}B are made via melt-spinning as can be MRE{sub 2}Fe{sub 14}B which allows for direct comparisons. MRE{sub 2}Fe{sub 14}B made using melt-spinning at high wheel speeds is overquenched and must be annealed to an optimal hard magnetic state. Due to the rare earth content in the MRE{sub 2}Fe{sub 14}B powders, they must be protected from the environment in which they operate. This protection is accomplished by using a modified fluidized bed process to grow a protective fluoride coating nominally 15nm thick, to reduce air oxidation. MRE{sub 2}Fe{sub 14}B has demonstrated reduced temperature dependent magnetic properties in ribbon and PBM form. The real challenge has been modifying alloy designs that were successfully melt-spun to be compatible with high-pressure gas-atomization (HPGA). The cooling rates in HPGA are lower than melt-spinning, as the powders are quenched via convective cooling, compared to melt-spinning, which quenches initially by conductive cooling. Early alloy designs, in gas atomized and melt-spun form, did not have similar phase compositions or microstructures. Alloy additions, such as the addition of zirconium as a nucleation catalyst, were successful in creating similar phases and microstructures in the HPGA powders and melt-spun ribbon of the same MRE{sub 2}Fe{sub 14}B composition.

  16. The Temperature Prediction in Deepwater Drilling of Vertical Well

    E-Print Network [OSTI]

    Feng, Ming

    2012-07-16T23:59:59.000Z

    .................................................................................................. 30 3.4 Geothermal Gradient ................................................................................ 30 3.5 Overall Heat Transfer Coefficient ............................................................ 30... ............................................................................................ 47 vii ? Page 5.2 Conservation Of Energy ........................................................................... 47 5.3 Steady-state Heat Transfer Model...

  17. Interlaboratory Analytical Comparison Study to Support Deepwater Horizon

    E-Print Network [OSTI]

    oil, and in SRM 1582 Petroleum Crude Oil. The results from this second exercise are reported along with a summary of the analytical methods used. INTRODUCTION On April 20, 2010, a fatal explosion, fire assessment (NRDA) to determine what resources have been injured and what uses of the resources have been lost

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

    Energy Savers [EERE]

    - 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 for...

  19. Deepwater Horizon Study Group Working Paper January 2011

    E-Print Network [OSTI]

    Silver, Whendee

    is considered a secondary response countermeasure following mechanical recovery. Due to limitations in oil recovery technology during a spill of significant volume, chemical dispersants, a secondary response tool, are used when an oil slick poses

  20. Regional distribution of diagenetic carbonate cement in Palaeocene deepwater

    E-Print Network [OSTI]

    Haszeldine, Stuart

    0QF, UK (Received 9 June 1998; revised 15 March 1999) ABSTRACT: Sandstones of the Palaeocene al., 1993), and by inorganic thermal breakdown of organic material at depths >1.5 km (Irwin et al., 1977). Within the Rannoch Formation of the Brent Group, sandstones contain >5% carbonate cement

  1. Experimental and numerical analysis of a deepwater mini-TLP

    E-Print Network [OSTI]

    Guichard, Aurelien

    2012-06-07T23:59:59.000Z

    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. In an attempt to better...

  2. Ultra-Deepwater Advisory Committee Elena Melchert Acting Designated...

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

    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;...

  3. Development of design tool for statically equivalent deepwater mooring systems

    E-Print Network [OSTI]

    Udoh, Ikpoto Enefiok

    2009-05-15T23:59:59.000Z

    tests is the depth and spatial limitations in wave basins. It is therefore important to design and build equivalent mooring systems to ensure that the static properties (global restoring forces and global stiffness) of the prototype floater are matched...

  4. 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:Year in Review: TopEnergy DOEDealingVehicle1 Closing the2-A Dynegy-A7: FinalFinal8:6::

  5. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S. DepartmenttoJune 16,AprilFrankDavis-Bacon3,AprilofThe United

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

    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 Delicious RankCombustion |Energy UsageAUDITVehiclesTankless orAChiefAppropriation FY 2012 FYEnergy DOE

  7. ORISE: White paper analyzes Deepwater Horizon event for improving nuclear

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory |CHEMPACKRadiologicalEric Dulmes Student'sDuringand radiological

  8. Secretaries Chu and Salazar to Convene Meeting on Strengthening Deepwater

    Office of Environmental Management (EM)

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September2-SCORECARD-01-24-13 Page 1 ofIBRF Project$17.5Blowout Containment

  9. Estimated Business Interruptions Losses of the Deepwater Horizon Oil Spill.

    E-Print Network [OSTI]

    Vargas, Vanessa

    2011-01-01T23:59:59.000Z

    ??A generalized framework of Economic Analysis of natural and man-made disasters is applied to the estimation of business interruption losses associated with an oil spill.… (more)

  10. Modal Dynamics and Stability of Large Multi-megawatt Deepwater...

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

    and O&M, while maintaining or increasing energy production. A vertical-axis wind turbine (VAWT) rotor configuration offers a potential transformative technology solution...

  11. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the ContributionsArms Control R&DNuclear fuelOPTICS FORJoethe U.S.SafetyTennesseeWi l

  12. Research Portfolio Report Ultra-Deepwater: Surface Systems and

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

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  13. Ultra-Deepwater Advisory Committee | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on EnergyEnergyTheUnited States andUS-Japan rare

  14. Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on EnergyEnergyTheUnited States andUS-Japan rareResources

  15. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered energy consumption byAbout SRNL HomeYoungClean EnergyContact NETLcontacts4 30

  16. Sandia National Laboratories: deep-water multiple-megawatt VAWT

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1development Sandia, NRELdeep-water multiple-megawatt VAWT Study Compares

  17. Deepwater Wind Formerly Winergy LLC | 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 Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revision has been approved forDaytonCounty,Deepi hasWind

  18. Ultra-Deepwater Advisory Committee Members | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research Petroleum ReserveDepartment of EnergyDepartment

  19. Neptune Deepwater Port Natural Gas Liquefied Natural Gas Imports (price)

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet) Year Jan Feb MarthroughYear Jan Feb Mar AprThousand9(Dollars per

  20. Neptune Deepwater Port Natural Gas Liquefied Natural Gas Imports (price)

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet) Year Jan Feb MarthroughYear Jan Feb Mar AprThousand9(Dollars

  1. Neptune Deepwater Port Natural Gas Liquefied Natural Gas Imports (price)

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet) Year Jan Feb MarthroughYear Jan Feb Mar AprThousand9(Dollarsfrom

  2. University of Maine Researching Floating Technologies for Deepwater

    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 RankCombustion |Energy Usage »of EnergyTheTwo New12.'6/0.2 ...... 13:27 FAX 301O R EAutomotive

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

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

    the commercial development of floating offshore wind technology. The gross U.S. offshore wind potential is more than 4,000 gigawatts (GW) - more than four times the combined...

  4. Ultra-Deepwater Advisory Committee Members | Department of Energy

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

    University of California, Berkeley Dr. Quenton R. Dokken PresidentCEO Gulf of Mexico Foundation Dr. Hartley H. Downs Technology Fellow Baker Hughes Incorporated Dr....

  5. Feasibility of MR Imaging/MR Spectroscopy-Planned Focal Partial Salvage Permanent Prostate Implant (PPI) for Localized Recurrence After Initial PPI for Prostate Cancer

    SciTech Connect (OSTI)

    Hsu, Charles C., E-mail: hsucc@radonc.ucsf.edu [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Hsu, Howard [Department of Radiation Oncology, New York University, New York, New York (United States)] [Department of Radiation Oncology, New York University, New York, New York (United States); Pickett, Barby [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)] [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Crehange, Gilles [Department of Radiation Oncology, Dijon University, Dijon (France)] [Department of Radiation Oncology, Dijon University, Dijon (France); Hsu, I-Chow Joe; Dea, Ryan [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)] [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Weinberg, Vivian [Biostatistics and Computational Biology Core, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)] [Biostatistics and Computational Biology Core, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Gottschalk, Alexander R. [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)] [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Kurhanewicz, John [Department of Radiology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)] [Department of Radiology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Shinohara, Katsuto [Department of Urology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)] [Department of Urology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States); Roach, Mack [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)] [Department of Radiation Oncology, University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, San Francisco, California (United States)

    2013-02-01T23:59:59.000Z

    Purpose: To assess the feasibility of magnetic resonance imaging (MRI)-planned partial salvage permanent prostate implant (psPPI) among patients with biopsy-proven local recurrence after initial PPI without evidence of distant disease. Methods and Materials: From 2003-2009, 15 patients underwent MRI/magnetic resonance spectroscopy (MRS) planning for salvage brachytherapy (psPPI, I-125 [n=14; 144 Gy]; Pd-103 [n=1; 125 Gy]) without hormone therapy. Full dose was prescribed to areas of recurrence and underdosage, without entire prostate implantation. Limiting urethral and rectal toxicity was prioritized. Follow-up was from salvage date to prostate-specific antigen (PSA) concentration failure (Phoenix criteria = nadir + 2.0; ASTRO = 3 consecutive rises), recurrence, distant metastases, or last follow-up PSA level. Progression-free survival (PFS) was defined as no PSA failure or biopsy-proven recurrence without all-cause mortality. Toxicity was scored using Common Terminology Criteria for Adverse Events version 4.0. Results: At salvage, median age was 68 years, and PSA concentration was 3.5 ng/mL (range, 0.9-5.6 ng/mL). Abnormal MRI/MRS findings were evident in 40% of patients. Biopsy-proven recurrences consisted of a single focus (80%) or 2 foci (20%). At recurrence, Gleason score was 6 (67%) or {>=}7 (27%). Median interval between initial and salvage implantation was 69 months (range, 28-132 months). psPPI planning characteristics limited doses to the rectum (mean V100 = 0.5% [0.07 cc]) and urethra (V100 = 12% [0.3 cc]). At median follow-up (23.3 months; range, 8-88 months), treatment failure (n=2) resulted only in localized recurrence; both patients underwent second psPPI with follow-up PSA tests at 12 and 26 months, resulting in 0.6 and 0.7 ng/mL, respectively. American Society for Radiation Oncology PFS rates at 1, 2, and 3 years were 86.7%, 78.4%, and 62.7%, respectively, with 5 patients for whom treatment failed (n=3 with negative transrectal ultrasound-guided biopsy results). Phoenix PFS rates at 1, 2, and 3 years were 100%, 100%, and 71.4%. 73%, respectively; achieved PSA nadir of <0.5 ng/mL; and 47% of patients had a nadir of <0.1 ng/mL. Treatment-related toxicity was minimal, with no operative interventions, fistulas, or other grade {>=}3 gastrointestinal (GI)/genitourinary (GU) toxicity. Thirteen percent had grade 1 GI and 33% had grade 2 GU toxicities. Postsalvage, 20% of patients had no erectile dysfunction, 67% of patients had medication-responsive erectile dysfunction, and 13% of patients had erectile dysfunction refractory to medication. Conclusions: Focal psPPI with MR-planning in highly selected patients is feasible with short-term control comparable to conventional salvage, with less toxicity. Longer follow-up is needed to confirm its impact on quality of life and treatment.

  6. Multicenter Analysis of Effect of High Biologic Effective Dose on Biochemical Failure and Survival Outcomes in Patients With Gleason Score 7-10 Prostate Cancer Treated With Permanent Prostate Brachytherapy

    SciTech Connect (OSTI)

    Stone, Nelson N. [Mount Sinai School of Medicine, New York, NY (United States)], E-mail: nelsonstone@optonline.net; Potters, Louis [North Shore Long Island Jewish Health System, New Hyde Park, NY (United States); Davis, Brian J. [Mayo Clinic, Rochester, MN (United States); Ciezki, Jay P. [Cleveland Clinic, Cleveland, OH (United States); Zelefsky, Michael J. [Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Roach, Mack; Shinohara, Katsuto [University of California, San Francisco, San Francisco, CA (United States); Fearn, Paul A. [Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Kattan, Michael W. [Cleveland Clinic, Cleveland, OH (United States); Stock, Richard G. [Mount Sinai School of Medicine, New York, NY (United States)

    2009-02-01T23:59:59.000Z

    Purpose: To investigate the biochemical control rates and survival for Gleason score 7-10 prostate cancer patients undergoing permanent prostate brachytherapy as a function of the biologic effective dose (BED). Methods and Materials: Six centers provided data on 5,889 permanent prostate brachytherapy patients, of whom 1,078 had Gleason score 7 (n = 845) or Gleason score 8-10 (n = 233) prostate cancer and postimplant dosimetry results available. The median prostate-specific antigen level was 7.5 ng/mL (range, 0.4-300). The median follow-up for censored patients was 46 months (range, 5-130). Short-term hormonal therapy (median duration, 3.9 months) was used in 666 patients (61.8%) and supplemental external beam radiotherapy (EBRT) in 620 (57.5%). The patients were stratified into three BED groups: <200 Gy (n = 645), 200-220 Gy (n = 199), and >220 Gy (n = 234). Biochemical freedom from failure (bFFF) was determined using the Phoenix definition. Results: The 5-year bFFF rate was 80%. The bFFF rate stratified by the three BED groups was 76.4%, 83.5%, and 88.3% (p < 0.001), respectively. Cox regression analysis revealed Gleason score, prostate-specific antigen level, use of hormonal therapy, EBRT, and BED were associated with bFFF (p < 0.001). Freedom from metastasis improved from 92% to 99% with the greatest doses. The overall survival rate at 5 years for the three BED groups for Gleason score 8-10 cancer was 86.6%, 89.4%, and 94.6%, respectively (p = 0.048). Conclusion: These data suggest that permanent prostate brachytherapy combined with EBRT and hormonal therapy yields excellent bFFF and survival results in Gleason score 7-10 patients when the delivered BEDs are >220 Gy. These doses can be achieved by a combination of 45-Gy EBRT with a minimal dose received by 90% of the target volume of 120 Gy of {sup 103}Pd or 130 Gy of {sup 125}I.

  7. Determination of stress state in deep subsea formation by combination of hydraulic fracturing in situ test and core

    E-Print Network [OSTI]

    are determined from (i) the cross-sectional shape of a core sample and (ii) Ps obtained by the HF test performed., 2010; Moe et al., 2012]. A new borehole, Hole C0009A, was drilled to 1603.7 mbsf (meters below seafloor stress magnitudes directly. In this test, a section of a borehole is isolated, and the borehole wall

  8. Simulation of subsea production pipeline stream to evaluate and address the flow assurance issues of waxy crude oil.

    E-Print Network [OSTI]

    Ahmed, Ashfaq

    2009-01-01T23:59:59.000Z

    ??The modern world is heavily dependent on crude oil and its associated products and the petroleum industry has taken responsibility to meet the rising consumer… (more)

  9. 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

    2014-03-31T23:59:59.000Z

    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.

  10. StudyWelcome Undergraduates

    E-Print Network [OSTI]

    Mottram, Nigel

    , Lloyds Register of Shipping, Rolls Royce, Scottish Power, Shell, Subsea 7, Technip UK, Unilever, Vascutek

  11. Novel Flux Coupling Machine without Permanent Magnets

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

    optimization through the use of an excitation field. * Developed an analytical MATLAB program to provide performance versus speed curves under the voltage and current...

  12. UNDERGRADUATE FELLOWSHIP RECIPIENTS: Stephanie Freeman -Permanent Reactive

    E-Print Network [OSTI]

    Fay, Noah

    - Community Water Supply Vulnerability in Northern Gila County, Geography & Regional Development MatthewBarriers for the Containment of Heavy Metals at Mine Impacted Sites, Chemical & Environmental Engineering Erin Gleeson - Development of a Decision Support Model to Assess Water Use by Different Riparian Communities, Hydrology

  13. High Temperature, Permanent Magnet Biased Magnetic Bearings

    E-Print Network [OSTI]

    Gandhi, Varun R.

    2010-07-14T23:59:59.000Z

    performance, high speed and high temperature applications like space vehicles, jet engines and deep sea equipment. The bearing system had a target design to carry a load equal to 500 lb-f (2225N). Another objective was to design and build a test rig fixture...

  14. Andrew B. Alvarado Current Address Permanent Address

    E-Print Network [OSTI]

    Escher, Christine

    presentations to sister companies and local communities about landscaping Research and perform cost-effectiveness Chair Collaborate with other club members to execute a philanthropy project to help poor farmers, Salem, OR 2010-2011 Student Volunteer, Mentor Interacted and socialized with middle and high school

  15. Property Manager Discretion in Permanent Supportive Housing

    E-Print Network [OSTI]

    van den Berk-Clark, Carissa J.

    2012-01-01T23:59:59.000Z

    the Shelter Plus Care (SPC) program and the Single Roomsubstance abuse problems. SPC attaches services to housingindividuals (HUD, 2010a). SPC projects are generally

  16. Approximating the Permanent with Belief Propagation

    E-Print Network [OSTI]

    Huang, Bert

    , then use Bethe free energy to approximate this partition function. After deriving some speedups to standard, not to mention relatively high polynomial running times that discourage their usage in practical applications-connected networks such as trees. In certain special loopy graph cases, including graphs with a single loop

  17. Permanent Edinburgh scientists include: Dr. Andrew Curtis

    E-Print Network [OSTI]

    Haszeldine, Stuart

    ) and Postdoctoral 10. Scientific Continuing Professional Development (CPD) of industrial scientists 11. Certified

  18. Permanent Magnetic Materials Discovery | The Ames Laboratory

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven AshbyDepartment ofGE'sOptimizationUSING C RAY'S

  19. Novel Flux Coupling Machine without Permanent Magnets

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

    proprietary, confidential, or otherwise restricted information 2011 U.S. DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

  20. Permanent magnet focused X-band photoinjector

    DOE Patents [OSTI]

    Yu, David U. L. (Rancho Palos Verdes, CA); Rosenzweig, James (Los Angeles, CA)

    2002-09-10T23:59:59.000Z

    A compact high energy photoelectron injector integrates the photocathode directly into a multicell linear accelerator with no drift space between the injection and the linac. High electron beam brightness is achieved by accelerating a tightly focused electron beam in an integrated, multi-cell, X-band rf linear accelerator (linac). The photoelectron linac employs a Plane-Wave-Transformer (PWT) design which provides strong cell-to-cell coupling, easing manufacturing tolerances and costs.

  1. KIRSTEN S. HOFMOCKEL CURRENT ADDRESS PERMANENT ADDRESS

    E-Print Network [OSTI]

    wetlands and Water Hyacinth: An alternative solution for domestic wastewater treatment. Study abroad Durham, NC 27705 Boulder, CO 80303 (919) 416-0699 (303) 546-6964 ksh@duke.edu Career interests: Wetland MANAGEMENT, May 1999 Nicholas School of the Environment Duke University, Durham, NC Concentration: Wetland

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

    E-Print Network [OSTI]

    , and that economic losses total tens of billions of dollars. On May 22, 2010, President Barack Obama announced ask be made part of the hearing record in its entirety, is the result of an intense six-month effort

  3. The Mica shipwreck: deepwater nautical archaeology in the Gulf of Mexico

    E-Print Network [OSTI]

    Jones, Toby Nephi

    2004-09-30T23:59:59.000Z

    Service served in a cultural resource management capacity. The United States Navy generously donated the use of NR-1, a nuclear powered research submarine, and its associated surface support vessel, SSV Carolyn Chouest. Captain Dennis Mc...Kelvey, commander of NR-1, and his crew, deserve special recognition for their outstanding performance during the Mica shipwreck investigation. Captain Steve Laster, of SSV Carolyn Chouest (Edison Chouest Offshore Corporation), and his crew, also deserve credit...

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

    E-Print Network [OSTI]

    Via, Rachael Kathleen

    2005-11-01T23:59:59.000Z

    on salinity.................................... 3 2 55 Ma tectonic reconstruction............................................................................... 3 3 The Lanthanide series... for in situ production of 143 Nd in a mineral, we define ? Nd (t): ? Nd (t)= {[( 143 Nd/ 144 Nd) i / I t CHUR ] ? 1} x 10 4 [DePaulo and Wasserburg, 1976], Figure 3. The Lanthanide series. Ce through Eu (along with La) are considered light rare earth...

  5. Modal Analysis of Deepwater Mooring Lines Based on a Variational Formulation

    E-Print Network [OSTI]

    Martinez Farfan, Jose Alberto

    2013-04-22T23:59:59.000Z

    Previous work on modal analysis of mooring lines has been performed from different theoretical formulations. Most studies have focused on mooring lines of a single homogeneous material, and the effect of added mass and damping produced by the water...

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

    E-Print Network [OSTI]

    Dincer, Zeynep

    2013-05-03T23:59:59.000Z

    of MASTER OF SCIENCE Approved by: Chair of Committee, Franco Marcantonio Co-Chair of Committee, Jos? L. Sericano Committee Members, Terry L. Wade Thomas S. Bianchi Head of Department, John R. Giardino May 2013 Major Subject: Geology... Island (Landau, 2011). The DWH oil spill is not the first oil spill in GoM. In June 1979, Ixtoc I platform was blown out in the Bay of Campeche, Mexico released 140 million gallons of oil into to the GoM (Etkin, 2009). Besides these large oil spills...

  7. Conceptual design and comparison of aramid and polyester taut leg spread moorings for deepwater applications

    SciTech Connect (OSTI)

    Wilde, B.; Kelly, P.; Librino, F.; Whitehill, A.S.

    1996-12-31T23:59:59.000Z

    As the offshore industry looks beyond water depths of 3,000 ft for future oil and gas production, the industry standard steel catenary spread mooring (CSM) system used on all floating production systems installed to date becomes increasingly inefficient and costly. An alternative to the CSM is the Taut Leg Spread Mooring (TLSM) system with its characteristic short scope legs and vertically loaded anchors. In water depths greater than 3,000 ft, it has been shown that TLSMs comprised of synthetic mooring lines have performance advantages over systems utilizing steel wire rope and demonstrated potential for significant cost reductions. Early studies investigated the use of aramid fiber rope due to its high strength, lower in-water weight and lower axial stiffness as compared to ropes made from steel. Later studies indicated that the material properties of polyester fiber, primarily its lower Young`s modulus, made polyester mooring lines more suitable for use in TLSMs. As the TLSM knowledge base expanded, aramid rope construction evolved. Earlier efforts to match the characteristics of steel wire rope have given way to new generation soft aramid constructions. This paper compares the mooring performance and total installed cost of a soft aramid TLSM to a typical polyester configuration. Both systems were designed for use in the Gulf of Mexico (GOM) with an FPS based on the Aker P45.

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

    E-Print Network [OSTI]

    Grosell, Martin

    . Cardiac function is particularly important for fast-swimming pelagic predators with high aerobic demand, indicating a highly con- served response to oil toxicity. A considerable portion of Gulf wa- ter samples (1). Although subsurface application of dispersant near the wellhead resulted in retention

  9. FEBRUARY 14, 2011 NOAA Ship Thomas Jefferson approaches the Deepwater Horizon

    E-Print Network [OSTI]

    the country need climate information to make choices about what crops to plant and when to plant them. City that all offshore uses ­ include renewable energ

  10. The persistence of oceans on Earth-like planets: insights from the deep-water cycle

    E-Print Network [OSTI]

    Schaefer, Laura

    2015-01-01T23:59:59.000Z

    In this paper we present a series of models for the deep water cycle on super-Earths experiencing plate tectonics. The deep water cycle can be modeled through parameterized convection models coupled with a volatile recycling model. The convection of the silicate mantle is linked to the volatile cycle through the water-dependent viscosity. Important differences in surface water content are found for different parameterizations of convection. Surface oceans are smaller and more persistent for single layer convection, rather than convection by boundary layer instability. Smaller planets have initially larger oceans but also return that water to the mantle more rapidly than larger planets. Super-Earths may therefore be less habitable in their early years than smaller planets, but their habitability (assuming stable surface conditions), will persist much longer.

  11. nh Gi Thit Hi Ti Nguyn Thin Nhin Do S C Trn Du Deepwater Horizon

    E-Print Network [OSTI]

    . xut D Án Phc Hi Cu Bn Bob Sikes, Bãi u Xe, và ng Mòn s lp thêm èn chiu sáng dùng nng lng mt tri, sa · Texas NOAA · B Ni V · Cc Bo V Môi Trng Hoa K · B Nông Nghip Hoa K #12;CHI PHÍ C LNG D án Phc Hi n Cát

  12. 1Classification of Wetlands and Deepwater Habitats of the United States Lewis M. Cowardin1

    E-Print Network [OSTI]

    Gray, Matthew

    and flooding regime: (1) Rock Bottom with a substrate of bedrock, boulders, or stones; (2) Unconsolidated substrates as Rock Bottom; (4) Unconsolidated Shore with the same substrates as Unconsoli- dated Bottom; (5

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

    E-Print Network [OSTI]

    Lu, Z.

    2012-01-01T23:59:59.000Z

    to 15 detected in the non-oil contaminated samples. The alkBappeared to be dominant in all oil plume samples (Fig. S2).signal intensities. All oil plume samples clustered together

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

    E-Print Network [OSTI]

    in the environment of the Gulf of Mexico since April 20. This document describes the potential forms the oil may take) oil is a South Louisiana sweet crude oil (crude oil is termed sweet if it is low in sulfur). Like all crude oils, MS252 oil is a complex mixture of thousands of chemical compounds. Of those thousands

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

    E-Print Network [OSTI]

    Lu, Z.

    2012-01-01T23:59:59.000Z

    Mexico’s Mississippi Canyon area at a depth of 1,544 m releasing approximately 4.9 million barrels of crude

  16. Low-frequency variability of currents in the deepwater eastern Gulf of Mexico

    E-Print Network [OSTI]

    Cole, Kelly Lynne

    2009-05-15T23:59:59.000Z

    the support and guidance of Dr. Alexis Lugo-Fern?ndez at MS. Thanks also goes to the researchers I?ve met throughout the course of the EGOM project, namely Dr. Robert Leben, whose sea surface height product I?ve used extensively in this thesis. I want... O?Hern, and my clasmates Laura Rubiano-G?mez and Chrisy Wiederwohl, for their friendship, and for not leting me spend too much time at the O&M. Above al, I want to thank my family for their encouragement and support of my pasions. I am fortunate...

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

    E-Print Network [OSTI]

    Mason, O.U.

    2012-01-01T23:59:59.000Z

    sea in the Gulf of Mexico to oil emanating from the MacondoGulf of Mexico experiences multiple, natural, episodic “oilGulf of Mexico experiences frequent, episodic, natural “oil

  18. DOE Selects Projects Aimed at Reducing Drilling Risks in Ultra-Deepwater |

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S. Department ofThe U.S. Department ofLawrence

  19. Innovative Deepwater Platform Aims to Harness Offshore Wind and Wave Power

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietipDepartment ofTheDepartmentEnergyThese slidesEnergy|

  20. 2007 Annual Plan for the Ultra-Deepwater and Unconventional Natural Gas and

    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 Delicious RankCombustionImprovement Awardflash2007-42attachment1.pdfmodule 4 module51:11| Department ofResearch:Other

  1. 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

    2012-01-01T23:59:59.000Z

    Fishes to the Gulf of Mexico Oil Disaster. PLoS One 2011, 6:of weathered crude oil from the Gulf of Mexico in mallardsmall oil seeps occur through- out the Gulf of Mexico, we do

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

    E-Print Network [OSTI]

    Mason, O.U.

    2012-01-01T23:59:59.000Z

    sea in the Gulf of Mexico to oil emanating from the MacondoPhotos of the oil spill from the Gulf of Mexico. Figure 3.Gulf of Mexico experiences multiple, natural, episodic “oil

  3. The Deepwater Horizon disaster and wetlands Statement from the Environmental Concerns Committee

    E-Print Network [OSTI]

    a major spill in 1986. Coastal wetlands in the Gulf of Mexico are also sensitive to oil as are species the Louisiana coastal zone (Richardson and Pahl 2006). The current oil spill in the Gulf of Mexico has also and fisheries resources been more clearly demonstrated than in the Gulf Mexico (e.g., Chesney et al. 2000, Crain

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

    E-Print Network [OSTI]

    Mason, O.U.

    2012-01-01T23:59:59.000Z

    carbon cycle with a gas hydrate capacitor: Significance formaximum. Natural Gas Hydrates, Occurrence, Distribution and

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution Enhancedenvironmental stewardship | Department of

  6. Department of Energy Activities in Response to the Deepwater BP Oil Spill

    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 Office of Inspector General Office of Audit Services Audit Report DepartmentRepresentative OfActivities in Response to

  7. 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 Office of Inspector GeneralDepartment of EnergyofProject is on Track| DepartmentPinakin Patel / Fred

  8. Computer Simulation of Reservoir Depletion and Oil Flow from the Macondo Well Following the Deepwater

    E-Print Network [OSTI]

    Computer Simulation of Reservoir Depletion and Oil Flow from the Macondo Well Following, 2010, Computer simulation of reservoir depletion and oil flow from the Macondo well following. ..................................................................................12 Figures Figure 1. Oblique schematic view of the M56 oil reservoir

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

    E-Print Network [OSTI]

    Mason, O.U.

    2012-01-01T23:59:59.000Z

    C. J. Villanueva (2010). "Propane respiration jump-startsin samples that exhibited propane and ethane anomalies (loss of both ethane and propane relative to methane

  10. E-Print Network 3.0 - acoustic detection activities Sample Search...

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

    include underwater acoustics... acoustics, acoustic detection and classification of subsea objects and machine reliability. During his visit... unexploded ordnance ... Source:...

  11. Wave Synchronizing Crane Control during Water Entry in Offshore Moonpool Operations

    E-Print Network [OSTI]

    Johansen, Tor Arne

    important in the years to come. Offshore oil and gas fields will be developed with all processing equipment with the Troll Pilot subsea oil processing plant. This subsea plant is made up of a three phase subsea separator entry phase the hydro- 1Norsk Hydro Exploration and Production, Bergen, Norway. Svein

  12. TULSA UNIVERSITY PARAFFIN DEPOSITION PROJECTS

    SciTech Connect (OSTI)

    Michael Volk; Cem Sarica

    2003-10-01T23:59:59.000Z

    As oil and gas production moves to deeper and colder water, subsea multiphase production systems become critical for economic feasibility. It will also become increasingly imperative to adequately identify the conditions for paraffin precipitation and predict paraffin deposition rates to optimize the design and operation of these multiphase production systems. Although several oil companies have paraffin deposition predictive capabilities for single-phase oil flow, these predictive capabilities are not suitable for the multiphase flow conditions encountered in most flowlines and wellbores. For deepwater applications in the Gulf of Mexico, it is likely that multiphase production streams consisting of crude oil, produced water and gas will be transported in a single multiphase pipeline to minimize capital cost and complexity at the mudline. Existing single-phase (crude oil) paraffin deposition predictive tools are clearly inadequate to accurately design these pipelines because they do not account for the second and third phases, namely, produced water and gas. The objective of this program is to utilize the current test facilities at The University of Tulsa, as well as member company expertise, to accomplish the following: enhance our understanding of paraffin deposition in single and two-phase (gas-oil) flows; conduct focused experiments to better understand various aspects of deposition physics; and, utilize knowledge gained from experimental modeling studies to enhance the computer programs developed in the previous JIP for predicting paraffin deposition in single and two-phase flow environments. These refined computer models will then be tested against field data from member company pipelines. The following deliverables are scheduled during the first three projects of the program: (1) Single-Phase Studies, with three different black oils, which will yield an enhanced computer code for predicting paraffin deposition in deepwater and surface pipelines. (2) Two-Phase Studies, with a focus on heat transfer and paraffin deposition at various pipe inclinations, which will be used to enhance the paraffin deposition code for gas-liquid flow in pipes. (3) Deposition Physics and Water Impact Studies, which will address the aging process, improve our ability to characterize paraffin deposits and enhance our understanding of the role water plays in paraffin deposition in deepwater pipelines. As in the previous two studies, knowledge gained in this suite of studies will be integrated into a state-of-the-art three-phase paraffin deposition computer program.

  13. In Milestone, Energy Department Projects Safely and Permanently...

    Office of Environmental Management (EM)

    contributing to the 10 million tons captured milestone are part of DOE's Regional Carbon Sequestration Partnership (RCSP) Initiative and the Industrial Carbon Capture and...

  14. Direct control of air gap flux in permanent magnet machines

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN)

    2000-01-01T23:59:59.000Z

    A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.

  15. Seasonal versus permanent thermocline warming by tropical cyclones

    E-Print Network [OSTI]

    Ferrari, Raffaele

    studies that try to quantify this contribution make the assumption that all heat pumped below the mixed [2] Ocean heat transport (OHT) is crucial to maintaining the observed global climate. Emanuel [2001, it remains an open question as to whether the heat pumped into the ocean interior in the wake of TCs actually

  16. Secrtariat permanent de la CSRP, BP 25485, Dakar, Sngal

    E-Print Network [OSTI]

    with the impact of climate variability and of global warming on the upwelling système. Overexploitation combined-building. Capacity Development in physical oceanography and marine ecology in West Africa Joint proposals, marine life and human impact is strengthened; · The EAMME tools are developed; · A more rational

  17. PLASMA DIAGNOSTIC AND PERFORMANCE OF A PERMANENT MAGNET HALL THRUSTER

    E-Print Network [OSTI]

    Boyer, Edmond

    % to 80% in planetary missions. After half century of science and technology improvements, electric, Instituto de Física, Universidade de Brasília-UnB 70910-900 Brasilia-DF, Brazil Abstract Electric propulsion been developed by space agencies, space research institutes and industries in several countries

  18. SHORT COMMUNICATION Protist diversity in a permanently ice-covered

    E-Print Network [OSTI]

    Priscu, John C.

    valley aquatic food web is extremely simplified and entirely dominated by the microbial loop. Single in carbon and nutrient cycling at all trophic levels in the dry valley lake food chain, including fixing the majority of the inorganic carbon (P

  19. A doubly-fed permanent magnet generator for wind turbines

    E-Print Network [OSTI]

    Thomas, Andrew J. (Andrew Joseph), 1981-

    2004-01-01T23:59:59.000Z

    Optimum extraction of energy from a wind turbine requires that turbine speed vary with wind speed. Existing solutions to produce constant-frequency electrical output under windspeed variations are undesirable due to ...

  20. Perfect 2-d quadrupole fields from permanent magnets

    SciTech Connect (OSTI)

    Lee, E.P.; Vella, M. [Lawrence Berkeley National Lab., CA (United States). Accelerator and Fusion Research Div.

    1996-04-01T23:59:59.000Z

    Consider the 13-beam channel array shown in Figure 1. It is asserted that, under mathematically ideal assumptions, a pure quadrupole field is centered in each of the 13 beam channel boxes. An identical quadrupole field (for {bar H}, not {bar B}) is also centered in each of the 4 boxes containing 4 magnetic wedges located near the center of the system. An iron yoke ({mu} = {infinity}) with the displayed zig-zag shape provides a boundary condition (H{sub {parallel}} = 0) that makes the 13 channels equivalent to a portion of an infinite array. A similar array can be readily drawn for any number of beams. The quadrupole gradient in the beam channels is B{prime} = M{sub o}/2b, where M{sub o} is the remnant field of the magnetic wedges, and the channel diameter (wedge-to-wedge) is 2b. Note that a unit cell of the array, containing one beam, has diameter 2{radical}2 b (viewed from 45{degree} tilt) so its area is 8 b{sup 2}. A significant advantage of this design over those using dipolar blocks is the large fraction of cross section devoted to beam channels (50% vs 25%). Application to a heavy ion fusion driver is discussed.

  1. Evaluation of permanent magnets for high temperature operations

    E-Print Network [OSTI]

    Van Hees, Elizabeth

    2012-06-07T23:59:59.000Z

    250 276 300 25 60 0 Temperature ( C) Fig. B. Tractive Force per unit Volume of Ni Cylinder vs. Temperature for barium ferrite. 'I. 2 1. 'I 'I. O O. e 0. 6 0. 7 Unannaallad ~ m g 0. 4 0. 6 OA 0. 3 0. 2 0. 1 0. 0 Cooling A noalls 24... 425 4% 0 75 '100125150175200225250275 0 Temperature ( C) 0 20 a 30 + 10 x 40 v SO Fig. lla. Tractive Force per unit Volume of Ni Cylinder vs. Temperature for Alnico 8, annealled from 0 to 50 hours in 10 hour steps. M E u m m 0 &i 'o 0 8 u...

  2. Resilient modulus and permanent deformation testing of unbound granular materials

    E-Print Network [OSTI]

    Kancherla, Anuroopa

    2005-11-01T23:59:59.000Z

    Numerous research efforts have been devoted to characterizing the behavior of granular materials, which is one of the main concerns of pavement engineers. For better understanding of this behavior, laboratory tests where in-situ stress conditions...

  3. High force density linear permanent magnet motors : "electromagnetic muscle actuators"

    E-Print Network [OSTI]

    Ruddy, Bryan P. (Bryan Paul), 1983-

    2012-01-01T23:59:59.000Z

    Actuator performance represents a key constraint on the capability of many engineered devices. Performance of these devices is often exceeded by their muscle-powered natural counterparts, inspiring the development of new, ...

  4. A New Class of Switched Reluctance Motors without Permanent Magnets

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

    proprietary, confidential, or otherwise restricted information 2011 U.S. DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

  5. High temperature, permanent magnet biased, homopolar magnetic bearing actuator

    E-Print Network [OSTI]

    Hossain, Mohammad Ahsan

    2006-10-30T23:59:59.000Z

    current resistance and improves the system efficiency because the magnetic field of the HTPM can suspend the major portion of the static load on bearing. A high temperature radial magnetic bearing was designed via an iterative search employing 3D finite...

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

    E-Print Network [OSTI]

    Torrellas, Josep

    approaches are ineffective Micro-code patching Compiler workarounds OS hacks Firmware #12;http Condition L1, ALU, Memory, etc. Hang, data corruption IO failure, wrong data A (BCD) Signal Snoop L1 hit IO

  7. Inter-provincial Permanent and Temporary Migration in China

    E-Print Network [OSTI]

    Sun, Mingjie

    2011-01-01T23:59:59.000Z

    the role of migration in China's regional development and9: 485-502. Zhu, Yu. 2007. "China's floating population andThe settlement intention of China’s floating population in

  8. acuminata harbors permanent: Topics by E-print Network

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

    magnetic poles, so of generation of magnetic elds in astrophysical objects (or in electrically conducting uids) constitutes Khesin, Boris A. 316 Random solids and random...

  9. anteriors permanents tooth: Topics by E-print Network

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

    magnetic poles, so of generation of magnetic elds in astrophysical objects (or in electrically conducting uids) constitutes Khesin, Boris A. 355 Random solids and random...

  10. Microbial metatranscriptomics in a permanent marine oxygen minimum zone

    E-Print Network [OSTI]

    Stewart, Frank J.

    Simultaneous characterization of taxonomic composition, metabolic gene content and gene expression in marine oxygen minimum zones (OMZs) has potential to broaden perspectives on the microbial and biogeochemical dynamics ...

  11. HYDROMECHANICAL CHARACTERIZATION FOR SITE SELECTION IN CO2 PERMANENT

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    -BarcelonaTech), Barcelona, Spain 3 Energy City Foundation (CIUDEN), Spanish Government CO2 Geological Storage Programme (Vilarrasa et al., 2011, Energy Procedia) Trees killed by CO2 leakage in Mammoth Mountains (Farrar et al EQUATIONS Mass conservation equation Darcy's law Momentum balance Effective stress Hooke's law (linear

  12. In Milestone, Energy Department Projects Safely and Permanently Store 10

    Office of Environmental Management (EM)

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProvedDecember 2005DepartmentDecemberGlossaryEnergyImportant

  13. High Performance Permanent Magnets for Advanced Motors | Department of

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietip sheetK-4In 2013 many| Department of4EnergyBuilding

  14. NNSA Supports Permanent Threat Reduction in Ukraine through Alternative

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challengeMultiscaleLogosAdministrationNetworkNuclearNational

  15. POLICY GUIDANCE MEMORANDUM #23 Permanent and Nonpermanent Positions,

    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 RankCombustion | Department ofT ib l L d F SSales LLCDieselEnergyHistory May 3,3,10 CategoryIncentive

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Careerlumens_placard-green.epsEnergy1.pdfMarket | Department of Energy ReviewsFebruary 7,

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Careerlumens_placard-green.epsEnergy1.pdfMarket | Department of Energy ReviewsFebruary

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Careerlumens_placard-green.epsEnergy1.pdfMarket | Department of Energy ReviewsFebruaryEnergy

  19. POLICY GUIDANCE MEMORANDUM #23 Permanent and Nonpermanent Positions,

    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:Year in3.pdfEnergyDepartment ofOil's Impact on2005-74 | Department ofDepartmentAnnual

  20. High Temperature, Buried Permanent Magnet, Brushless DC Motor

    E-Print Network [OSTI]

    Zhang, Zhengxin

    2010-10-12T23:59:59.000Z

    Circuit Model Predictions of the motor performance are accomplished with a closed loop electric circuit incorporating the motor. The circuit is broken down into three sub-circuits which are the equivalent generator as motor rotating, the coil pair...,Kang, Jungu Lee, Zhiyang Wang and others who worked with me in Vibration Control and Electrormechanics Laboratory. I also would like to thank Dr. Jinfang Liu and Dr. Heeju Choi at Electron Energy Corporation who constantly support our work. Finally, thanks...