Sample records for 230-kilovolt switchyards stage

  1. Switchyards

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

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

  2. LANSCE Wire Scanner System Prototype: Switchyard Test

    SciTech Connect (OSTI)

    Sedillo, James D [Los Alamos National Laboratory

    2012-04-11T23:59:59.000Z

    On November 19, 2011, the beam diagnostics team of Los Alamos National Laboratory's LANSCE accelerator facility conducted a test of a prototype wire scanner system for future deployment within the accelerator's switchyard area. The primary focus of this test was to demonstrate the wire scanner control system's ability to extend its functionality beyond acquiring lower energy linac beam profile measurements to acquiring data in the switchyard. This study summarizes the features and performance characteristics of the electronic and mechanical implementation of this system with details focusing on the test results.

  3. Recovery Act Project Clears Portsmouth Switchyard, Benefits Community...

    Office of Environmental Management (EM)

    million Recovery Act project completed safely and on schedule, workers demolished 160 towers as tall as 120 feet that were used to operate the X-533 Electrical Switchyard....

  4. Recovery Act Project Clears Portsmouth Switchyard, Benefits Community...

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

    operate. At the X-533 Electrical Switchyard, Recovery Act workers also re- moved 18 transformers, two switchgear houses, and a two-sto- ry control room. With the help of a 600-ton...

  5. CX-011855: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Henderson 230 Kilovolt Switchyard (Erosion Control) CX(s) Applied: B1.3 Date: 02/06/2014 Location(s): Nevada Offices(s): Western Area Power Administration-Desert Southwest Region

  6. Beam Position Monitor Electronics Upgrade for Fermilab Switchyard

    E-Print Network [OSTI]

    Stabile, P; Fitzgerald, J A; Liu, N; Morris, D K; Prieto, P S; Seraphin, J P

    2015-01-01T23:59:59.000Z

    The beam position monitor (BPM) system for Fermilab Switchyard (SY) provides the position, intensity and integrated intensity of the 53.10348 MHz RF bunched resonant extracted beam from the Main Injector over 4 seconds of spill. The total beam intensity varies from 1x10^11 to 1x10^13 protons. The spill is measured by stripline beam postion monitors and resonant circuit. The BPMs have an external resonant circuit tuned to 53.10348 MHz. The corresponding voltage signal out of the BPM has been estimated to be between -110 dBm and -80 dBm.

  7. Environmental Baseline Survey Report for the Title Transfer of the K-792 Switchyard Complex at the East Tennessee Technology Park, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    SAIC

    2009-12-01T23:59:59.000Z

    This environmental baseline survey (EBS) documents the baseline environmental conditions of the U. S. Department of Energy's (DOE's) K-792 Switchyard Complex, which includes the former K-792 Switchyard, the K-79 1-B building, the K-796-A building, and the K-792 Northern Expansion Area located in the northwestern portion of the East Tennessee Technology Park (ETTP). The total area of the property is approximately 19.91 acres. DOE is proposing to transfer the title of this land area and buildings to the Heritage Center, LLC (Heritage Center), a subsidiary corporation of the Community Reuse Organization of East Tennessee (CROET). This report provides supporting information for the transfer of this government-owned facility at ETTP to a non-federal entity. The area proposed for title transfer includes the former K-792 Switchyard, the K-792 Northern Expansion Area, Bldg. K-791-B, Bldg. K-796-A, and the underlying property known as the underlying fee. Located within the K-792 Switchyard footprint but not included in the transfer are Bldg. K-131 0-MP and Bldg. K- 131 0-MQ, two buildings owned by a private company that leases space in the northern portion of the Switchyard. The transfer footprint is bounded by Perimeter Road to the north and west, the parking area for Portal 8 to the south, and primarily the former K-792 Powerhouse Complex and Avenue 'U' North to the east; however, the eastern boundary along the Northern Expansion area has no physical features associated with it. Zone 2 remedial action objectives were developed by the DVS to support the future use of ETTP as a mixed-use commercial and industrial park. Therefore, remediation criteria were designed for the protection of the future industrial worker under the assumption the worker normally would not have the potential for exposure to soils at depths below 10 ft below ground surface (bgs). Accordingly, land use controls (LUCs) have been established to restrict disturbance of soils below 10 ft deep and to limit future land use to industriallcornmercial activities. Where the need for LUCs below 10 ft bgs is not warranted, this is so stated and explained. Once all actions associated with the DVS for Zone 1 and Zone 2 are completed and the data support it, there will be a re-evaluation with EPA and TDEC for the restriction on excavation below 10 ft. The DVS process and the preparation of this report included visual and physical inspections of the property and adjacent properties, a detailed records search, sampling and analysis of soils, radiological walkover surveys, and a risk evaluation. Resources evaluated as part of the records search included Federal Government records, title documents, aerial photographs that may reflect prior uses, and interviews with current and former employees 1 involved in the operations on the real property to identify any areas on the property where hazardous substances and petroleum products, or their derivatives, and acutely hazardous wastes were stored for one year or more, known to have been released, or disposed of. In addition, radiological surveys of Bldgs. K-791-B and K-796-A were conducted to assess the buildings radiological condition. Soil vapor sampling and polychlorinated biphenyl (PCB) swipe sampling also were conducted within the buildings. Based on the U. S. Department of Energy's (DOE's) review of the existing information, including discussions and interviews referenced herein, and evaluation of the data gathered in preparation of the environmental baseline survey (EBS) for the K-792 Switchyard Complex, DOE recommends the following: Due to the uncertainty associated with the nature of the on-site groundwater and the need to evaluate and possibly address groundwater in the future, DOE recommends that the transfer of the K-792 Switchyard Complex be achieved by a covenant deferral per the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) Sect. 120(h)(3)(c). Land use restrictions associated with the covenant deferral are described.

  8. CX-008378: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Archer 230 Kilovolt Bay Addition for New Point of Delivery - Stage 07 CX(s) Applied: B4.6 Date: 03/08/2012 Location(s): CX: none Offices(s): Western Area Power Administration-Rocky Mountain Region

  9. EIS-0294: Final Environmental Impact Statement | Department of...

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

    interconnection with Western's Keswick-ElvertaOlinda-Elverta 230-kilovolt (kV) transmission lines. Calpine proposed to construct and operate of the Sutter Power Project. Sutter...

  10. Staging Europe February 19, 2003

    E-Print Network [OSTI]

    Qian, Ning

    of the stage. The opening musical phrases #12;Staging Europe 3 of Stravinsky's Histoire du Soldat begin, she

  11. Monitoring Switchyard Electricity | Y-12 National Security Complex

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA /Ml'.Solar Thermal Solar ThermalJul 13 1 2 3 4

  12. Precision adjustable stage

    DOE Patents [OSTI]

    Cutburth, Ronald W. (Tracy, CA); Silva, Leonard L. (Livermore, CA)

    1988-01-01T23:59:59.000Z

    An improved mounting stage of the type used for the detection of laser beams is disclosed. A stage center block is mounted on each of two opposite sides by a pair of spaced ball bearing tracks which provide stability as well as simplicity. The use of the spaced ball bearing pairs in conjunction with an adjustment screw which also provides support eliminates extraneous stabilization components and permits maximization of the area of the center block laser transmission hole.

  13. Multiple stage railgun

    DOE Patents [OSTI]

    Hawke, Ronald S. (Livermore, CA); Scudder, Jonathan K. (Pleasanton, CA); Aaland, Kristian (Livermore, CA)

    1982-01-01T23:59:59.000Z

    A multiple stage magnetic railgun accelerator (10) for accelerating a projectile (15) by movement of a plasma arc (13) along the rails (11,12). The railgun (10) is divided into a plurality of successive rail stages (10a-n) which are sequentially energized by separate energy sources (14a-n) as the projectile (15) moves through the bore (17) of the railgun (10). Propagation of energy from an energized rail stage back towards the breech end (29) of the railgun (10) can be prevented by connection of the energy sources (14a-n) to the rails (11,12) through isolation diodes (34a-n). Propagation of energy from an energized rail stage back towards the breech end of the railgun can also be prevented by dividing the rails (11,12) into electrically isolated rail sections (11a-n, 12a-n). In such case means (55a-n) are used to extinguish the arc at the end of each energized stage and a fuse (31) or laser device (61) is used to initiate a new plasma arc in the next energized rail stage.

  14. Staged fluidized bed

    DOE Patents [OSTI]

    Mallon, R.G.

    1983-05-13T23:59:59.000Z

    The invention relates to oil shale retorting and more particularly to staged fluidized bed oil shale retorting. Method and apparatus are disclosed for narrowing the distribution of residence times of any size particle and equalizing the residence times of large and small particles in fluidized beds. Particles are moved up one fluidized column and down a second fluidized column with the relative heights selected to equalize residence times of large and small particles. Additional pairs of columns are staged to narrow the distribution of residence times and provide complete processing of the material.

  15. System Design Stage

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

    1997-05-21T23:59:59.000Z

    This chapter addresses translating the user-oriented functional design specifications into a set of technical, computer-oriented system design specifications; and designing the data structure and processes to the level of detail necessary to plan and execute the Programming and Installation Stages.

  16. Staged depressurization system

    DOE Patents [OSTI]

    Schulz, T.L.

    1993-11-02T23:59:59.000Z

    A nuclear reactor having a reactor vessel disposed in a containment shell is depressurized in stages using depressurizer valves coupled in fluid communication with the coolant circuit. At least one sparger submerged in the in-containment refueling water storage tank which can be drained into the containment sump communicates between one or more of the valves and an inside of the containment shell. The depressurizer valves are opened in stages, preferably at progressively lower coolant levels and for opening progressively larger flowpaths to effect depressurization through a number of the valves in parallel. The valves can be associated with a pressurizer tank in the containment shell, coupled to a coolant outlet of the reactor. At least one depressurization valve stage openable at a lowest pressure is coupled directly between the coolant circuit and the containment shell. The reactor is disposed in the open sump in the containment shell, and a further valve couples the open sump to a conduit coupling the refueling water storage tank to the coolant circuit for adding water to the coolant circuit, whereby water in the containment shell can be added to the reactor from the open sump. 4 figures.

  17. Multi-stage Cascaded Stirling Refrigerator

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

    Energy Multi-stage Cascaded Stirling Refrigerator Multi-stage Cascaded Stirling Refrigerator Los Alamos National Laboratory (LANL) researchers have developed a multi-stage...

  18. Staged membrane oxidation reactor system

    DOE Patents [OSTI]

    Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

    2013-04-16T23:59:59.000Z

    Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

  19. Staged membrane oxidation reactor system

    DOE Patents [OSTI]

    Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

    2012-09-11T23:59:59.000Z

    Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

  20. Staged membrane oxidation reactor system

    DOE Patents [OSTI]

    Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

    2014-05-20T23:59:59.000Z

    Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

  1. 5, 14791509, 2008 Staged cost

    E-Print Network [OSTI]

    Boyer, Edmond

    HESSD 5, 1479­1509, 2008 Staged cost optimization of urban storm drainage systems M. Maharjan et al Staged cost optimization of urban storm drainage systems based on hydraulic performance in a changing optimization of urban storm drainage systems M. Maharjan et al. Title Page Abstract Introduction Conclusions

  2. Microsoft Word - LSN_FiberInstall_CX.docx

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

    BPA's Ponderosa-Pilot Butte 230-kilovolt (kV) and Redmond-Pilot Butte 230-kV transmission lines in Deschutes County, Oregon. BPA has determined that the fiber would not...

  3. CX-010107: Categorical Exclusion Determination | Department of...

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

    Exclusion Determination Curecanti-Morrow Point 230 Kilovolt (kV) and 12.47-kV Transmission Lines Access Road Maintenance CX(s) Applied: B1.3 Date: 04122013 Location(s):...

  4. CX-011208: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Malta-Mount Elbert 230-Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 09/09/2013 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  5. CX-011209: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Archer-North Park 230-Kilovolt Transmission Line Danger Tree Management CX(s) Applied: B1.3 Date: 09/10/2013 Location(s): Colorado, Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  6. CX-010891: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Archer-Stegall 230-Kilovolt Fiber Optic Ground Wire Addition CX(s) Applied: B4.7 Date: 08/20/2013 Location(s): Nebraska, Nebraska Offices(s): Western Area Power Administration-Rocky Mountain Region

  7. CX-011723: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Happy Jack 230 Kilovolt Substation Fiber Optic Installation in Laramie County, Wyoming CX(s) Applied: B4.7 Date: 12/31/2013 Location(s): Wyoming Offices(s): Western Area Power Administration-Rocky Mountain Region

  8. EIS-0106: Great Falls-Conrad Transmission Line Project, Montana

    Broader source: Energy.gov [DOE]

    The Western Area Power Administration prepared this EIS to evaluate the environmental impacts of the construction and operation of a 230-kilovolt transmission line from Great Falls, Montana, to Conrad, Montana.

  9. CX-011204: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Hayden-North Park 230-Kilovolt Transmission Lane Danger Tree Management CX(s) Applied: B1.3 Date: 08/30/2013 Location(s): Colorado, Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  10. CX-012077: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Craig to Hayden 230-Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 04/21/2014 Location(s): Colorado, Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  11. CX-003624: Categorical Exclusion Determination | Department of...

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

    Replacement of twenty 22-L structures on the Satsop-Aberdeen Number 2 230-kilovolt (kV) transmission line. The project work would involve removal of the existing towers and...

  12. CX-008685: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Big Eddy – Troutdale No. 1 230 Kilovolt Transmission Line Upgrade CX(s) Applied: B4.13 Date: 07/11/2012 Location(s): Oregon, Oregon, Oregon Offices(s): Bonneville Power Administration

  13. CX-008704: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Grand Coulee-Bell No. 3 Double Circuit 230 Kilovolt Transmission Line Reconductoring Project CX(s) Applied: B1.3 Date: 05/31/2012 Location(s): Washington, Washington, Washington Offices(s): Bonneville Power Administration

  14. CX-012741: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Liberty-Westwing 230 Kilovolt Transmission Line Insulator Replacement CX(s) Applied: B1.3Date: 41795 Location(s): ArizonaOffices(s): Western Area Power Administration-Desert Southwest Region

  15. CX-010098: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Phoenix to Lone Butte 230 Kilovolt Transmission Line, Bird Diverter Installation CX(s) Applied: B1.3 Date: 04/08/2013 Location(s): CX: none Offices(s): Western Area Power Administration-Desert Southwest Region

  16. CX-010886: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Curecanti-Lost Canyon 230-Kilovolt Emergency Repairs of Downed Conductor CX(s) Applied: B1.3 Date: 08/06/2013 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  17. CX-011648: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Davis-Parker 230 Kilovolt Transmission Line- Marker Ball(s) Replacement CX(s) Applied: B1.3 Date: 12/17/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

  18. CX-012194: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Santiam Substation 230 Kilovolt Shunt Reactor Replacement CX(s) Applied: B4.11 Date: 05/05/2014 Location(s): Oregon Offices(s): Bonneville Power Administration

  19. Performance limits of axial turbomachine stages

    E-Print Network [OSTI]

    Hall, David Kenneth

    2011-01-01T23:59:59.000Z

    This thesis assesses the limits of stage efficiency for axial compressor and turbine stages. A stage model is developed, consisting of a specified geometry and a surface velocity distribution with turbulent boundary layers. ...

  20. Viscosity and dissipation - early stages

    E-Print Network [OSTI]

    P. Bozek

    2009-01-15T23:59:59.000Z

    A very early start up time of the hydrodynamic evolution is needed in order to reproduce observations from relativistic heavy-ion collisions experiments. At such early times the systems is still not locally equilibrated. Another source of deviations from local equilibrium is the viscosity of the fluid. We study these effects at very early times to obtain a dynamical prescription for the transition from an early 2-dimensional expansion to a nearly equilibrated 3-dimensional expansion at latter stages. The role of viscosity at latter stages of the evolution is also illustrated.

  1. Operation of staged membrane oxidation reactor systems

    DOE Patents [OSTI]

    Repasky, John Michael

    2012-10-16T23:59:59.000Z

    A method of operating a multi-stage ion transport membrane oxidation system. The method comprises providing a multi-stage ion transport membrane oxidation system with at least a first membrane oxidation stage and a second membrane oxidation stage, operating the ion transport membrane oxidation system at operating conditions including a characteristic temperature of the first membrane oxidation stage and a characteristic temperature of the second membrane oxidation stage; and controlling the production capacity and/or the product quality by changing the characteristic temperature of the first membrane oxidation stage and/or changing the characteristic temperature of the second membrane oxidation stage.

  2. Multi-stage flash degaser

    DOE Patents [OSTI]

    Rapier, P.M.

    1980-06-26T23:59:59.000Z

    A multi-stage flash degaser is incorporated in an energy conversion system having a direct-contact, binary-fluid heat exchanger to remove essentially all of the noncondensable gases from geothermal brine ahead of the direct-contact binary-fluid heat exchanger in order that the heat exchanger and a turbine and condenser of the system can operate at optimal efficiency.

  3. Multi-stage flash degaser

    DOE Patents [OSTI]

    Rapier, Pascal M. (Richmond, CA)

    1982-01-01T23:59:59.000Z

    A multi-stage flash degaser (18) is incorporated in an energy conversion system (10) having a direct-contact, binary-fluid heat exchanger to remove essentially all of the noncondensable gases from geothermal brine ahead of the direct-contact binary-fluid heat exchanger (22) in order that the heat exchanger (22) and a turbine (48) and condenser (32) of the system (10) can operate at optimal efficiency.

  4. Second Stage Turbine Bucket Airfoil.

    DOE Patents [OSTI]

    Xu, Liming (Simpsonville, SC); Ahmadi, Majid (Simpsonville, SC); Humanchuk, David John (Simpsonville, SC); Moretto, Nicholas (Clifton Park, NY); Delehanty, Richard Edward (Maineville, OH)

    2003-05-06T23:59:59.000Z

    The second-stage buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I wherein Z is a perpendicular distance from a plane normal to a radius of the turbine centerline and containing the X and Y values with the Z value commencing at zero in the X, Y plane at the radially innermost aerodynamic section of the airfoil and X and Y are coordinate values defining the airfoil profile at each distance Z. The X, Y and Z values may be scaled as a function of the same constant or number to provide a scaled-up or scaled-down airfoil section for the bucket.

  5. Staged direct injection diesel engine

    DOE Patents [OSTI]

    Baker, Quentin A. (San Antonio, TX)

    1985-01-01T23:59:59.000Z

    A diesel engine having staged injection for using lower cetane number fuels than No. 2 diesel fuel. The engine includes a main fuel injector and a pilot fuel injector. Pilot and main fuel may be the same fuel. The pilot injector injects from five to fifteen percent of the total fuel at timings from 20.degree. to 180.degree. BTDC depending upon the quantity of pilot fuel injected, the fuel cetane number and speed and load. The pilot fuel injector is directed toward the centerline of the diesel cylinder and at an angle toward the top of the piston, avoiding the walls of the cylinder. Stratification of the early injected pilot fuel is needed to reduce the fuel-air mixing rate, prevent loss of pilot fuel to quench zones, and keep the fuel-air mixture from becoming too fuel lean to become effective. In one embodiment, the pilot fuel injector includes a single hole for injection of the fuel and is directed at approximately 48.degree. below the head of the cylinder.

  6. Sandia National Laboratories: control early combustion stages

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

    control early combustion stages Direct Measurement of Key Molecule Will Increase Accuracy of Combustion Models On March 3, 2015, in Computational Modeling & Simulation, CRF,...

  7. Integrated two-stage coal liquefaction process

    DOE Patents [OSTI]

    Bronfenbrenner, James C. (Allentown, PA); Skinner, Ronald W. (Allentown, PA); Znaimer, Samuel (Vancouver, CA)

    1985-01-01T23:59:59.000Z

    This invention relates to an improved two-stage process for the production of liquid carbonaceous fuels and solvents from carbonaceous solid fuels, especially coal.

  8. Emotion in Organizations: A Review in Stages

    E-Print Network [OSTI]

    Elfenbein, Hillary Anger

    2007-01-01T23:59:59.000Z

    their crucial role is infused throughout the framework,component of emotion infused into organizational culture, inacross cultural groups are infused into each stage of the

  9. STATE OF CALIFORNIA INSULATION STAGE CHECKLIST

    E-Print Network [OSTI]

    STATE OF CALIFORNIA INSULATION STAGE CHECKLIST CEC-CF-6R-ENV-22 (Revised 05/12) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-ENV-22 Quality Insulation Installation (QII) - Insulation Stage be insulated in a manner that resists thermal bridging of the assembly separating conditioned from

  10. Stage IV work hardening in cubic metals

    SciTech Connect (OSTI)

    Rollett, A.D.; Kocks, U.F.; Doherty, R.D.

    1986-01-01T23:59:59.000Z

    The work hardening of fcc metals at large strains is discussed with reference to the linear stress-strain behavior often observed at large strains and known as Stage IV. The experimental evidence shows that Stage IV is a work hardening phenomenon that is found quite generally, even in pure fcc metals subjected to homogeneous deformation. A simple model for Stage IV in pure metals is presented, based on the accumulation of dislocation debris. Experiments are described for large strain torsion tests on four aluminum alloys. The level and extent of Stage IV scaled with the saturation stress that would represent the end of Stage III in the absence of a Stage IV. Reversing the torsion after large prestrains produced transient reductions in the work hardening. The strain rate sensitivity was also measured before and during the transient and found not to vary significantly. The microstructure observed at large strains in an Mg alloy suggest that Stage IV can occur in the absence of microband formation. Previous proposals for the cause of Stage IV are reviewed and found to be not supported by recent experimental data.

  11. Petar Ljusev SIngle Conversion stage AMplifier

    E-Print Network [OSTI]

    . The proposed SICAM solution strives for direct energy conversion from the mains to the audio outputPetar Ljusev SIngle Conversion stage AMplifier - SICAM PhD thesis, December 2005 #12;#12;To Elena of the project "SICAM - SIngle Conversion stage AMplifier", funded by the Danish Energy Authority under the EFP

  12. Dual stage active magnetic regenerator and method

    DOE Patents [OSTI]

    Pecharsky, V.K.; Gschneidner, K.A. Jr.

    1999-03-30T23:59:59.000Z

    A dual stage active magnetic regenerator refrigerator as well as method using the Joule-Brayton thermodynamic cycle includes a high temperature stage refrigerant comprising DyAl{sub 2} or (Dy{sub 1{minus}x}Er{sub x})Al{sub 2} where x is selected to be greater than 0 and less than about 0.3 in combination with a low temperature stage comprising (Dy{sub 1{minus}x}Er{sub x})Al{sub 2} where x is selected to be greater than about 0.5 and less than 1 to provide significantly improved refrigeration efficiency in the liquefaction of gaseous hydrogen. 17 figs.

  13. Dual stage active magnetic regenerator and method

    DOE Patents [OSTI]

    Pecharsky, Vitalij K. (Ames, IA); Gschneidner, Jr., Karl A. (Ames, IA)

    1999-03-30T23:59:59.000Z

    A dual stage active magnetic regenerator refrigerator as well as method using the Joule-Brayton thermodynamic cycle includes a high temperature stage refrigerant comprising DyAl.sub.2 or (Dy.sub.1-x Er.sub.x)Al.sub.2 where x is selected to be greater than 0 and less than about 0.3 in combination with a low temperature stage comprising (Dy.sub.1-x Er.sub.x)Al.sub.2 where x is selected to be greater than about 0.5 and less than 1 to provide significantly improved refrigeration efficiency in the liquefaction of gaseous hydrogen.

  14. Water rites : a city stage for Boston

    E-Print Network [OSTI]

    Mansfield, Timothy Denton

    1990-01-01T23:59:59.000Z

    This thesis focuses on the design of a public theatre for the entire city of Boston, a "city stage." The intention is to explore through design the boundaries of an architectural setting for large scale performance art; ...

  15. Ultra-high speed vacuum pump system with first stage turbofan and second stage turbomolecular pump

    DOE Patents [OSTI]

    Jostlein, Hans

    2006-04-04T23:59:59.000Z

    An ultra-high speed vacuum pump evacuation system includes a first stage ultra-high speed turbofan and a second stage conventional turbomolecular pump. The turbofan is either connected in series to a chamber to be evacuated, or is optionally disposed entirely within the chamber. The turbofan employs large diameter rotor blades operating at high linear blade velocity to impart an ultra-high pumping speed to a fluid. The second stage turbomolecular pump is fluidly connected downstream from the first stage turbofan. In operation, the first stage turbofan operates in a pre-existing vacuum, with the fluid asserting only small axial forces upon the rotor blades. The turbofan imparts a velocity to fluid particles towards an outlet at a high volume rate, but moderate compression ratio. The second stage conventional turbomolecular pump then compresses the fluid to pressures for evacuation by a roughing pump.

  16. Staged mold for encapsulating hazardous wastes

    DOE Patents [OSTI]

    Unger, Samuel L. (Los Angeles, CA); Telles, Rodney W. (Alhambra, CA); Lubowitz, Hyman R. (Rolling Hills Estates, CA)

    1990-01-01T23:59:59.000Z

    A staged mold for stabilizing hazardous wastes for final disposal by molding an agglomerate of the hazardous wastes and encapsulating the agglomerate. Three stages are employed in the process. In the first stage, a first mold body is positioned on a first mold base, a mixture of the hazardous wastes and a thermosetting plastic is loaded into the mold, the mixture is mechanically compressed, heat is applied to cure the mixture to form a rigid agglomerate, and the first mold body is removed leaving the agglomerate sitting on the first mold base. In the second stage, a clamshell second mold body is positioned around the agglomerate and the first mold base, a powdered thermoplastic resin is poured on top of the agglomerate and in the gap between the sides of the agglomerate and the second mold body, the thermoplastic is compressed, heat is applied to melt the thermoplastic, and the plastic is cooled jacketing the agglomerate on the top and sides. In the third stage, the mold with the jacketed agglomerate is inverted, the first mold base is removed exposing the former bottom of the agglomerate, powdered thermoplastic is poured over the former bottom, the first mold base is replaced to compress the thermoplastic, heat is applied to melt the new thermoplastic and the top part of the jacket on the sides, the plastic is cooled jacketing the bottom and fusing with the jacketing on the sides to complete the seamless encapsulation of the agglomerate.

  17. Staged mold for encapsulating hazardous wastes

    DOE Patents [OSTI]

    Unger, Samuel L. (Los Angeles, CA); Telles, Rodney W. (Alhambra, CA); Lubowitz, Hyman R. (Rolling Hills Estates, CA)

    1988-01-01T23:59:59.000Z

    A staged mold for stabilizing hazardous wastes for final disposal by molding an agglomerate of the hazardous wastes and encapsulating the agglomerate. Three stages are employed in the process. In the first stage, a first mold body is positioned on a first mold base, a mixture of the hazardous wastes and a thermosetting plastic is loaded into the mold, the mixture is mechanically compressed, heat is applied to cure the mixture to form a rigid agglomerate, and the first mold body is removed leaving the agglomerate sitting on the first mold base. In the second stage, a clamshell second mold body is positioned around the agglomerate and the first mold base, a powdered thermoplastic resin is poured on top of the agglomerate and in the gap between the sides of the agglomerate and the second mold body, the thermoplastic is compressed, heat is applied to melt the thermoplastic, and the plastic is cooled jacketing the agglomerate on the top and sides. In the third stage, the mold with the jacketed agglomerate is inverted, the first mold base is removed exposing the former bottom of the agglomerate, powdered thermoplastic is poured over the former bottom, the first mold base is replaced to compress the thermoplastic, heat is applied to melt the new thermoplastic and the top part of the jacket on the sides, the plastic is cooled jacketing the bottom and fusing with the jacketing on the sides to complete the seamless encapsulation of the agglomerate.

  18. Article mounting and position adjustment stage

    DOE Patents [OSTI]

    Cutburth, Ronald W. (Tracy, CA); Silva, Leonard L. (Livermore, CA)

    1988-01-01T23:59:59.000Z

    An improved adjustment and mounting stage of the type used for the detection of laser beams is disclosed. A ring sensor holder has locating pins on a first side thereof which are positioned within a linear keyway in a surrounding housing for permitting reciprocal movement of the ring along the keyway. A rotatable ring gear is positioned within the housing on the other side of the ring from the linear keyway and includes an oval keyway which drives the ring along the linear keyway upon rotation of the gear. Motor-driven single-stage and dual (x, y) stage adjustment systems are disclosed which are of compact construction and include a large laser transmission hole.

  19. Thermally integrated staged methanol reformer and method

    DOE Patents [OSTI]

    Skala, Glenn William (Churchville, NY); Hart-Predmore, David James (Rochester, NY); Pettit, William Henry (Rochester, NY); Borup, Rodney Lynn (East Rochester, NY)

    2001-01-01T23:59:59.000Z

    A thermally integrated two-stage methanol reformer including a heat exchanger and first and second reactors colocated in a common housing in which a gaseous heat transfer medium circulates to carry heat from the heat exchanger into the reactors. The heat transfer medium comprises principally hydrogen, carbon dioxide, methanol vapor and water vapor formed in a first stage reforming reaction. A small portion of the circulating heat transfer medium is drawn off and reacted in a second stage reforming reaction which substantially completes the reaction of the methanol and water remaining in the drawn-off portion. Preferably, a PrOx reactor will be included in the housing upstream of the heat exchanger to supplement the heat provided by the heat exchanger.

  20. STAGING OF FUEL CELLS - PHASE II

    SciTech Connect (OSTI)

    Per Onnerud; Suresh Sriramulu

    2002-08-29T23:59:59.000Z

    TIAX has executed a laboratory-based development program aiming at the improvement of stationary fuel cell systems. The two-year long development program resulted in an improved understanding of staged fuel cells and inorganic proton conductors through evaluation of results from a number of laboratory tasks: (1) Development of a fuel cell modeling tool--Multi-scale model was developed, capable of analyzing the effects of materials and operating conditions; and this model allowed studying various ''what-if'' conditions for hypothetically staged fuel cells; (2) Study of new high temperature proton conductor--TIAX discovery of a new class of sulfonated inorganics capable of conducting protons when exposed to water; and study involved synthesis and conductivity measurements of novel compounds up to 140 C; (3) Electrochemical fuel cell measurements--the feasibility of staged fuel cells was tested in TIAX's fuel cell laboratories experimental design was based on results from modeling.

  1. Article mounting and position adjustment stage

    DOE Patents [OSTI]

    Cutburth, R.W.; Silva, L.L.

    1988-05-10T23:59:59.000Z

    An improved adjustment and mounting stage of the type used for the detection of laser beams is disclosed. A ring sensor holder has locating pins on a first side thereof which are positioned within a linear keyway in a surrounding housing for permitting reciprocal movement of the ring along the keyway. A rotatable ring gear is positioned within the housing on the other side of the ring from the linear keyway and includes an oval keyway which drives the ring along the linear keyway upon rotation of the gear. Motor-driven single-stage and dual (x, y) stage adjustment systems are disclosed which are of compact construction and include a large laser transmission hole. 6 figs.

  2. Two-stage coal liquefaction process

    DOE Patents [OSTI]

    Skinner, Ronald W. (Allentown, PA); Tao, John C. (Perkiomenville, PA); Znaimer, Samuel (Vancouver, CA)

    1985-01-01T23:59:59.000Z

    An improved SRC-I two-stage coal liquefaction process which improves the product slate is provided. Substantially all of the net yield of 650.degree.-850.degree. F. heavy distillate from the LC-Finer is combined with the SRC process solvent, substantially all of the net 400.degree.-650.degree. F. middle distillate from the SRC section is combined with the hydrocracker solvent in the LC-Finer, and the initial boiling point of the SRC process solvent is increased sufficiently high to produce a net yield of 650.degree.-850.degree. F. heavy distillate of zero for the two-stage liquefaction process.

  3. Multi-Stage Bunch Compressors for the International Linear Collider

    E-Print Network [OSTI]

    Tenenbaum, Peter G.; Raubenheimer, Tor O.; Wolski, Andrzej

    2005-01-01T23:59:59.000Z

    150 µm RMS. The multi-stage compressors are somewhat longerthan the single-stage compressor and require additional RFof the NLC Bunch Compressor,” (1999). [4] C. Adolphsen,

  4. Computations with Disjunctive Cuts for Two-Stage Stochastic Mixed ...

    E-Print Network [OSTI]

    2007-08-29T23:59:59.000Z

    profit from expanding and running a given supply chain. The first-stage ... uncertainty appears in the net profit parameter in the second-stage objective function,.

  5. Fusion in a Staged Z-pinch

    E-Print Network [OSTI]

    Rahman, H. U.; Ney, P.; Rostoker, N.; Wessel, F. J.

    2009-01-01T23:59:59.000Z

    York (1978) Teller, E. : Fusion. Academic Press, New York (O R I G I N A L A RT I C L E Fusion in a Staged Z-pinch H.U.implosion the sim- ulated fusion-energy yield is 7.6 MJ,

  6. Multi-stage quantum absorption heat pumps

    E-Print Network [OSTI]

    Luis A. Correa

    2014-01-16T23:59:59.000Z

    It is well known that heat pumps, while being all limited by the same basic thermodynamic laws, may find realization on systems as "small" and "quantum" as a three-level maser. In order to quantitatively assess how the performance of these devices scales with their size, we design generalized $N$-dimensional ideal heat pumps by merging $N-2$ elementary three-level stages. We set them to operate in the absorption chiller mode between given hot and cold baths, and study their maximum achievable cooling power and the corresponding efficiency as a function of $N$. While the efficiency at maximum power is roughly size-independent, the power itself slightly increases with the dimension, quickly saturating to a constant. Thus, interestingly, scaling up autonomous quantum heat pumps does not render a significant enhancement beyond the optimal double-stage configuration.

  7. The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster

    SciTech Connect (OSTI)

    Yu Daren; Song Maojiang; Li Hong; Liu Hui; Han Ke [Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

    2012-11-15T23:59:59.000Z

    It is futile for a double stage Hall thruster to design a special ionization stage if the ionized ions cannot enter the acceleration stage. Based on this viewpoint, the ion transport under different magnetic field strengths in the ionization stage is investigated, and the physical mechanisms affecting the ion transport are analyzed in this paper. With a combined experimental and particle-in-cell simulation study, it is found that the ion transport between two stages is chiefly affected by the potential well, the potential barrier, and the potential drop at the bottom of potential well. With the increase of magnetic field strength in the ionization stage, there is larger plasma density caused by larger potential well. Furthermore, the potential barrier near the intermediate electrode declines first and then rises up while the potential drop at the bottom of potential well rises up first and then declines as the magnetic field strength increases in the ionization stage. Consequently, both the ion current entering the acceleration stage and the total ion current ejected from the thruster rise up first and then decline as the magnetic field strength increases in the ionization stage. Therefore, there is an optimal magnetic field strength in the ionization stage to guide the ion transport between two stages.

  8. Catalytic multi-stage liquefaction (CMSL)

    SciTech Connect (OSTI)

    Comolli, A.G.; Ganguli, P.; Karolkiewicz, W.F.; Lee, T.L.K.; Pradhan, V.R.; Popper, G.A.; Smith, T.; Stalzer, R.

    1996-11-01T23:59:59.000Z

    Under contract with the U.S. Department of Energy, Hydrocarbon Technologies, Inc. has conducted a series of eleven catalytic, multi-stage, liquefaction (CMSL) bench scale runs between February, 1991, and September, 1995. The purpose of these runs was to investigate novel approaches to liquefaction relating to feedstocks, hydrogen source, improved catalysts as well as processing variables, all of which are designed to lower the cost of producing coal-derived liquid products. This report summarizes the technical assessment of these runs, and in particular the evaluation of the economic impact of the results.

  9. Turbine nozzle stage having thermocouple guide tube

    DOE Patents [OSTI]

    Schotsch, Margaret Jones (Greer, SC); Kirkpatrick, Francis Lawrence (late of Galway, NY); Lapine, Eric Michael (Northwood, NH)

    2002-01-01T23:59:59.000Z

    A guide tube is fixed adjacent opposite ends in outer and inner covers of a nozzle stage segment. The guide tube is serpentine in shape between the outer and inner covers and extends through a nozzle vane. An insert is disposed in the nozzle vane and has apertures to accommodate serpentine portions of the guide tube. Cooling steam is also supplied through chambers of the insert on opposite sides of a central insert chamber containing the guide tube. The opposite ends of the guide tube are fixed to sleeves, in turn fixed to the outer and inner covers.

  10. Multiple stage multiple filter hydrate store

    DOE Patents [OSTI]

    Bjorkman, H.K. Jr.

    1983-05-31T23:59:59.000Z

    An improved hydrate store for a metal halogen battery system is disclosed which employs a multiple stage, multiple filter means for separating the halogen hydrate from the liquid used in forming the hydrate. The filter means is constructed in the form of three separate sections which combine to substantially cover the interior surface of the store container. Exit conduit means is provided in association with the filter means for transmitting liquid passing through the filter means to a hydrate former subsystem. The hydrate former subsystem combines the halogen gas generated during the charging of the battery system with the liquid to form the hydrate in association with the store. Relief valve means is interposed in the exit conduit means for controlling the operation of the separate sections of the filter means, such that the liquid flow through the exit conduit means from each of the separate sections is controlled in a predetermined sequence. The three separate sections of the filter means operate in three discrete stages to provide a substantially uniform liquid flow to the hydrate former subsystem during the charging of the battery system. The separation of the liquid from the hydrate causes an increase in the density of the hydrate by concentrating the hydrate along the filter means. 7 figs.

  11. Device for staged carbon monoxide oxidation

    DOE Patents [OSTI]

    Vanderborgh, Nicholas E. (Los Alamos, NM); Nguyen, Trung V. (College Station, TX); Guante, Jr., Joseph (Denver, CO)

    1993-01-01T23:59:59.000Z

    A method and apparatus for selectively oxidizing carbon monoxide in a hydrogen rich feed stream. The method comprises mixing a feed stream consisting essentially of hydrogen, carbon dioxide, water and carbon monoxide with a first predetermined quantity of oxygen (air). The temperature of the mixed feed/oxygen stream is adjusted in a first the heat exchanger assembly (20) to a first temperature. The mixed feed/oxygen stream is sent to reaction chambers (30,32) having an oxidation catalyst contained therein. The carbon monoxide of the feed stream preferentially absorbs on the catalyst at the first temperature to react with the oxygen in the chambers (30,32) with minimal simultaneous reaction of the hydrogen to form an intermediate hydrogen rich process stream having a lower carbon monoxide content than the feed stream. The elevated outlet temperature of the process stream is carefully controlled in a second heat exchanger assembly (42) to a second temperature above the first temperature. The process stream is then mixed with a second predetermined quantity of oxygen (air). The carbon monoxide of the process stream preferentially reacts with the second quantity of oxygen in a second stage reaction chamber (56) with minimal simultaneous reaction of the hydrogen in the process stream. The reaction produces a hydrogen rich product stream having a lower carbon monoxide content than the process stream. The product stream is then cooled in a third heat exchanger assembly (72) to a third predetermined temperature. Three or more stages may be desirable, each with metered oxygen injection.

  12. Multiple stage multiple filter hydrate store

    DOE Patents [OSTI]

    Bjorkman, Jr., Harry K. (Birmingham, MI)

    1983-05-31T23:59:59.000Z

    An improved hydrate store for a metal halogen battery system is disclosed which employs a multiple stage, multiple filter means or separating the halogen hydrate from the liquid used in forming the hydrate. The filter means is constructed in the form of three separate sections which combine to substantially cover the interior surface of the store container. Exit conduit means is provided in association with the filter means for transmitting liquid passing through the filter means to a hydrate former subsystem. The hydrate former subsystem combines the halogen gas generated during the charging of the battery system with the liquid to form the hydrate in association with the store. Relief valve means is interposed in the exit conduit means for controlling the operation of the separate sections of the filter means, such that the liquid flow through the exit conduit means from each of the separate sections is controlled in a predetermined sequence. The three separate sections of the filter means operate in three discrete stages to provide a substantially uniform liquid flow to the hydrate former subsystem during the charging of the battery system. The separation of the liquid from the hydrate causes an increase in the density of the hydrate by concentrating the hydrate along the filter means.

  13. 15.391 Early Stage Capital, Fall 2003

    E-Print Network [OSTI]

    Loessberg, Shari

    15.391 examines the elements of raising early stage capital, focusing on start-up ventures and the early stages of company development. This course also prepares entrepreneurs to make the best use of outside advisors, and ...

  14. Running fermi with one-stage compressor: advantages, layout, performance

    E-Print Network [OSTI]

    Cornacchia, M.; Craievich, P.; Di Mitri, S.; Penco, G.; Venturini, M.; Zholents, A.

    2008-01-01T23:59:59.000Z

    Running FERMI with one-stage compressor: advantages, layout,a lattice with one-stage compressor, it was thought at thetime that the two bunch compressors configuration was still

  15. Engineering human hepatic tissue for modeling liver-stage malaria

    E-Print Network [OSTI]

    Ng, Shengyong

    2014-01-01T23:59:59.000Z

    The Plcsmodium liver stage is an attractive target for the development of antimalarial drugs and vaccines, as it provides an opportunity to interrupt the life cycle of the parasite at a critical early stage. However, ...

  16. SOFTWARE EVOLUTION AND THE STAGED MODEL OF THE SOFTWARE LIFECYCLE

    E-Print Network [OSTI]

    1 SOFTWARE EVOLUTION AND THE STAGED MODEL OF THE SOFTWARE LIFECYCLE K. H. Bennett Research............................................................................................................11 1.5 Iterative software development ...............................................................................................................19 1.10 The stages of the software lifecycle

  17. Residential Two-Stage Gas Furnaces - Do They Save Energy?

    E-Print Network [OSTI]

    Lekov, Alex; Franco, Victor; Lutz, James

    2006-01-01T23:59:59.000Z

    of two-stage furnaces with BPM motors provides electricityof two-stage furnaces with BPM motors provides electricityPSC) and brushless permanent magnet (BPM) 1 . PSC motors are

  18. CX-012090: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Henderson-Mead Number 2 230-Kilovolt Transmission Line, Erosion Repair at Structure 2/4 CX(s) Applied: B1.3 Date: 09/11/2013 Location(s): Nevada, Nevada Offices(s): Western Area Power Administration-Desert Southwest Region

  19. CX-008783: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Fiber Optic Installation at the Stegall 230 Kilovolt Substation Scotts Bluff County, Nebraska CX(s) Applied: B4.7 Date: 06/20/2012 Location(s): Nebraska Offices(s): Western Area Power Administration-Rocky Mountain Region

  20. CX-008399: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Erosion Control Measures Structure No. 110-3 Dave Johnston to Stegall 230 Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 03/29/2012 Location(s): Wyoming Offices(s): Western Area Power Administration-Rocky Mountain Region

  1. CX-010882: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Liberty-Parker Dam #2 230-Kilovolt Transmission Line, Optical Power Ground Wire Repair CX(s) Applied: B4.7 Date: 08/22/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

  2. EIS-0323-S1: Sacramento Area Voltage Support Project Supplemental Environmental Impact Statement and Environmental Impact Report, Placer, Sacramento, and Sutter Counties, California

    Broader source: Energy.gov [DOE]

    Construction and operation has been proposed of approximately 31 to 38 miles of new, double-circuit, 230-kilovolt (kV) transmission line between Western's O'Banion Substation and the area just south of SMUD's Elverta Substation and the reconstruciton of SMUD's existing 230-kV/115kV transmission line between SMUD's Elverta and Natomas substations.

  3. CX-007359: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    McNary-Horse Heaven 230-kilovolt Transmission Line Raise (Structures 15/2 to 16/3) CX(s) Applied: B1.3 Date: 12/01/2011 Location(s): Washington Offices(s): Bonneville Power Administration

  4. CX-012757: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Curecanti-Lost Canyon 230 Kilovolt Transmission Line Phase II Montezuma County, Colorado CX(s) Applied: B1.3Date: 41838 Location(s): ColoradoOffices(s): Western Area Power Administration-Rocky Mountain Region

  5. CX-012759: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Hayden-Gore Pass 230 Kilovolt Transmission Line Grand and Routt Counties, Colorado CX(s) Applied: B1.3Date: 41866 Location(s): ColoradoOffices(s): Western Area Power Administration-Rocky Mountain Region

  6. CX-011233: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Curecanti-Morrow Point 230 Kilovolt Transmission Line Danger Tree Management, Montrose County, Colorado CX(s) Applied: B1.3 Date: 10/17/2013 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  7. CX-012216: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Curecanti-Morrow Point 230 Kilovolt Transmission Line (Amended), Montrose County, Colorado CX(s) Applied: B1.3 Date: 05/16/2014 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  8. CX-012347: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Craig-Rifle 230-kilovolt Transmission Line, Moffat, Rio Blanco, and Garfield Counties, Colorado CX(s) Applied: B1.3 Date: 06/02/2014 Location(s): Colorado, Colorado, Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  9. CX-012346: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Blue River-Gore Pass 230-kilovolt Transmission Line (Amended), Grand County, Colorado CX(s) Applied: B1.3 Date: 06/02/2014 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  10. CX-012348: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Danger Tree Management on Curecanti to Poncha 230-kilovolt Transmission Line, Gunnison County, Colorado CX(s) Applied: B1.3 Date: 07/02/2014 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  11. CX-008787: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Midway Substation 230 Kilovolt Upgrades El Paso County, Colorado CX(s) Applied: B4.6, B4.11 Date: 07/25/2012 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  12. EIS-0294: Sutter Power Project, Sutter County, California

    Broader source: Energy.gov [DOE]

    This EIS analyzes Western Area Power Administration's (Western) decision to support Calpine Corporation (Calpine) to construct an electric generating facility and associated 230-kilovolt (kV) transmission line, approximately 3.5 miles in length, known as the Sutter Power Plant (SPP).

  13. CX-010883: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    PHX-LOB and LIB-LOB 230-Kilovolt Double-Circuit- Replace Insulators at Structure No. 28-2 With NCI Type Polymers CX(s) Applied: B1.3 Date: 08/12/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

  14. EIS-0141: Washington Water Power/B.C. Hydro Transmission Interconnection Project

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy developed this statement to evaluate the environmental impacts of constructing and operating a double-circuit 230-kilovolt electrical transmission line that would link the electrical systems of the Washington Water Power Company and the British Columbia Hydro and Power Authority.

  15. Type A Accident Investigation Board Report of the April 25, 1997, Contractor Fatality on the Olympia-White River #1 230 kV Line

    Broader source: Energy.gov [DOE]

    On April 25, 1997, at approximately 1510 hours, a lineman for Great Southwestern Construction Inc. was fatally electrocuted when he came in direct contact with a deenergized 230-kilovolt (kV) transmission power line conductor which contained an induced voltage.

  16. CX-011720: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Blue River-Gore Pass 230 Kilovolt Transmission Line Danger Tree Management in Grand County, Colorado CX(s) Applied: B1.3 Date: 01/06/2014 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

  17. EIS-0101: Thermopolis, Alcova, Casper Transmission Line Project

    Broader source: Energy.gov [DOE]

    The Western Area Power Administration developed this statement to evaluate the environmental impacts of constructing, operating and maintaining a 230-kilovolt transmission line between Thermopolis, Wyoming, and Alcova, Wyoming, and a 230/345-kilovolt transmission line between Alcova, Wyoming, and Casper, Wyoming.

  18. EIS-0067: 230-kV International Transmission Line San Diego County, California to Tijuana, Mexico, San Diego Gas and Electric Company

    Broader source: Energy.gov [DOE]

    The Economic Regulatory Administration and the California Public Utilities Commission jointly prepared this EIS to evaluate the environmental impacts of the construction, maintenance and operation of a 10-mile, 230-kilovolt transmission line across the U.S./Mexico border for the purpose of economic exchange of power and increased reliability.

  19. CX-011228: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Structure 112-4 LIBPAD1 230-kilovolt Transmission Line "Live Line" Maintenance Training CX(s) Applied: B1.2 Date: 10/25/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

  20. CX-006819: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Replace Aging Wood Poles on Trans Alta?s Centralia Tap to Chehalis-Covington No. 1 230-Kilovolt Transmission LineCX(s) Applied: B1.3Date: 09/16/2011Location(s): Lewis County, WashingtonOffice(s): Bonneville Power Administration

  1. CX-008716: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Bonneville Power Administration (BPA) Tacoma Power Chehalis- Covington 230-Kilovolt (kV) Line/Convert Microwave Signals From Analog To Digital CX(s) Applied: B1.7 Date: 05/21/2012 Location(s): Washington, Washington, Washington Offices(s): Bonneville Power Administration

  2. On Robust Optimization of Two-Stage Systems

    E-Print Network [OSTI]

    2001-02-20T23:59:59.000Z

    Feb 20, 2001 ... The objective is to minimize the cost of the first-stage decision and the ... stage model in which an investment is made at the beginning of the period and ..... Their second-stage decision—future production of power—is not fully ...

  3. Nitrogen oxides reduction by staged combustion of LCV gas

    E-Print Network [OSTI]

    Cabrera Sixto, Jose Manuel

    1990-01-01T23:59:59.000Z

    In the staged combustion of the LCV gas, hydrocarbons are oxidized during the Erst stage mto CO, COz, and HtO. A portion of thc CO and Hz gases contained in the LCV gas are converted to CO z and HzO, espctively, daring this Sist stage. The remaining CO and H z...

  4. FREE ENERGIES OF STAGING A SCENARIO AND PERPETUAL MOTION

    E-Print Network [OSTI]

    Salamon, Peter

    CHAPTER 1 FREE ENERGIES OF STAGING A SCENARIO AND PERPETUAL MOTION MACHINES OF THE THIRD KIND Peter to a notion of staging free energy: the free energy invested in choreographing all the actors of a biochemical \\offprintinfo{(Title, Edition)}{(Author)} at the beginning of your document. 1 #12;2 FREE ENERGIES OF STAGING

  5. Business Model Change in Early-Stage Entrepreneurial Firms Facing High Uncertainty BUSINESS MODEL CHANGE IN EARLY-STAGE ENTREPRENEURIAL

    E-Print Network [OSTI]

    Mottram, Nigel

    Business Model Change in Early-Stage Entrepreneurial Firms Facing High Uncertainty 1 BUSINESS MODEL Business School, U.K. Changing business models is inevitable for early-stage entrepreneurial firms striving in elements of business models in a set of eight early-stage university spin-offs. Findings suggest

  6. A Staged Muon Accelerator Facility For Neutrino and Collider Physics

    E-Print Network [OSTI]

    Delahaye, Jean-Pierre; Brice, Stephen; Bross, Alan David; Denisov, Dmitri; Eichten, Estia; Holmes, Stephen; Lipton, Ronald; Neuffer, David; Palmer, Mark Alan; Bogacz, S Alex; Huber, Patrick; Kaplan, Daniel M; Snopok, Pavel; Kirk, Harold G; Palmer, Robert B; Ryne, Robert D

    2015-01-01T23:59:59.000Z

    Muon-based facilities offer unique potential to provide capabilities at both the Intensity Frontier with Neutrino Factories and the Energy Frontier with Muon Colliders. They rely on a novel technology with challenging parameters, for which the feasibility is currently being evaluated by the Muon Accelerator Program (MAP). A realistic scenario for a complementary series of staged facilities with increasing complexity and significant physics potential at each stage has been developed. It takes advantage of and leverages the capabilities already planned for Fermilab, especially the strategy for long-term improvement of the accelerator complex being initiated with the Proton Improvement Plan (PIP-II) and the Long Baseline Neutrino Facility (LBNF). Each stage is designed to provide an R&D platform to validate the technologies required for subsequent stages. The rationale and sequence of the staging process and the critical issues to be addressed at each stage, are presented.

  7. Staged combustion with piston engine and turbine engine supercharger

    DOE Patents [OSTI]

    Fischer, Larry E.; Anderson, Brian L.; O'Brien, Kevin C.

    2011-11-01T23:59:59.000Z

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  8. Staged combustion with piston engine and turbine engine supercharger

    DOE Patents [OSTI]

    Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O'Brien, Kevin C. (San Ramon, CA)

    2006-05-09T23:59:59.000Z

    A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

  9. EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO

    Broader source: Energy.gov [DOE]

    Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69 kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing the EA. Further information about the project is available on the project website.

  10. Jefferson Lab technology, capabilities take center stage in constructi...

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

    semi for its road test. Jefferson Lab technology, capabilities take center stage in construction of portion of DOE's Spallation Neutron Source accelerator By James Schultz January...

  11. Necessary Optimality Conditions for two-stage Stochastic Programs ...

    E-Print Network [OSTI]

    2009-09-18T23:59:59.000Z

    Sep 18, 2009 ... In this paper we study the following two-stage stochastic program: ...... are important properties when one discusses the convergence of sam-.

  12. A Two Stage Stochastic Equilibrium Model for Electricity Markets ...

    E-Print Network [OSTI]

    Dali Zhang

    2008-02-06T23:59:59.000Z

    Feb 6, 2008 ... A Two Stage Stochastic Equilibrium Model for Electricity Markets with Two Way Contracts. Dali Zhang (zhangdl ***at*** soton.ac.uk) Huifu Xu ...

  13. Dermatology Grand Rounds "AJCC Melanoma Staging Update: Impact on Diagnostic

    E-Print Network [OSTI]

    Bar, Moshe

    Dermatology Grand Rounds "AJCC Melanoma Staging Update: Impact on Diagnostic Reporting in primary melanoma Explain the decision making process in offering sentinel lymph node mapping Date

  14. Running fermi with one-stage compressor: advantages, layout, performance

    E-Print Network [OSTI]

    Cornacchia, M.; Craievich, P.; Di Mitri, S.; Penco, G.; Venturini, M.; Zholents, A.

    2008-01-01T23:59:59.000Z

    Running FERMI with one-stage compressor: advantages, layout,re-examines the option of running the FERMI FEL driver with

  15. Exploring the Modeling Capacity of Two-stage Robust Optimization

    E-Print Network [OSTI]

    Yu An

    2013-06-13T23:59:59.000Z

    Jun 13, 2013 ... usf.edu). Abstract: To handle significant variability in loads, renewable energy generation, as well as various contingencies, two-stage robust ...

  16. Staging Laser Plasma Accelerators for Increased Beam Energy

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    Staging Laser Plasma Accelerators for Increased Beam Energy D. Panasenko, A. J. Shu, C. B., Berkeley, California 94720, USA Abstract. Staging laser plasma accelerators is an efficient way of mitigating laser pump depletion in laser driven accelerators and necessary for reaching high energies

  17. A TWO-STAGE ALGORITHM FOR ENHANCEMENT OF REVERBERANT SPEECH

    E-Print Network [OSTI]

    Wang, DeLiang "Leon"

    A TWO-STAGE ALGORITHM FOR ENHANCEMENT OF REVERBERANT SPEECH Mingyang Wu and DeLiang Wang Department, respectively. Based on this observation, we propose a two-stage algorithm that enhances reverberant speech from) and speaker recognition systems. Consequently, an effective reverberant speech enhancement system can be used

  18. Protein Folding Simulation by Two-Stage Optimization

    E-Print Network [OSTI]

    Will, Sebastian

    Protein Folding Simulation by Two-Stage Optimization A. Dayem Ullah1 , L. Kapsokalivas1 , M. Mann2 propose a two-stage optimization approach for protein folding simulation in the FCC lattice, inspired from procedure based on simulated annealing alone. 1 Introduction The question of how proteins fold and whether

  19. Combined fuel and air staged power generation system

    SciTech Connect (OSTI)

    Rabovitser, Iosif K; Pratapas, John M; Boulanov, Dmitri

    2014-05-27T23:59:59.000Z

    A method and apparatus for generation of electric power employing fuel and air staging in which a first stage gas turbine and a second stage partial oxidation gas turbine power operated in parallel. A first portion of fuel and oxidant are provided to the first stage gas turbine which generates a first portion of electric power and a hot oxidant. A second portion of fuel and oxidant are provided to the second stage partial oxidation gas turbine which generates a second portion of electric power and a hot syngas. The hot oxidant and the hot syngas are provided to a bottoming cycle employing a fuel-fired boiler by which a third portion of electric power is generated.

  20. Merged Two-Stage Power Converter With Soft Charging Switched-Capacitor Stage in 180 nm CMOS

    E-Print Network [OSTI]

    Pilawa-Podgurski, Robert C. N.

    In this paper, we introduce a merged two-stage dc-dc power converter for low-voltage power delivery. By separating the transformation and regulation function of a dc-dc power converter into two stages, both large voltage ...

  1. Influence of magnetic field strength on potential well in the ionization stage of a double stage Hall thruster

    SciTech Connect (OSTI)

    Yu Daren; Song Maojiang; Liu Hui; Zhang Xu; Li Hong [Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

    2012-07-15T23:59:59.000Z

    Similar to a single stage Hall thruster, the magnetic field, which controls electron trajectory and electric field distribution, is the most important factor determining the performance of a double stage Hall thruster. Especially, a potential well, which is helpful to reduce the ion loss on the thruster walls, is shaped in the ionization stage due to the existence of an annular magnetic field topology there. In this paper, the influence of magnetic field strength in the ionization stage on the potential well is researched with both experiments and particle-in-cell simulations. It is found that the depth of potential well increases with the magnetic field strength as a result of enhanced magnetic confinement and lowered electron conductivity. Consequently, the plasma density as well as the ion current entering the acceleration stage increases. However, an excessive magnetic field strength leads to an excess of ion loss on the walls of the acceleration stage. Therefore, there is an appropriate magnetic field strength in the ionization stage that results in a proper potential well and consequently an optimal performance of a double stage Hall thruster.

  2. Resilient data staging through MxN distributed transactions.

    SciTech Connect (OSTI)

    Schwan, Karsten (Georgia Institute of Technology, Atlanta, GA); Oldfield, Ron A.; Lofstead, Gerald Fredrick, II; Dayal, Jai (Georgia Institute of Technology, Atlanta, GA)

    2011-11-01T23:59:59.000Z

    Scientific computing-driven discoveries are frequently driven from workflows that use persistent storage as a staging area for data between operations. With the bad and progressively worse bandwidth vs. data size issues as we continue towards exascale, eliminating persistent storage through techniques like data staging will both enable these workflows to continue online, but also enable more interactive workflows reducing the time to scientific discoveries. Data staging has shown to be an effective way for applications running on high-end computing platforms to offload expensive I/O operations and to manage the tremendous amounts of data they produce. This data staging approach, however, lacks the ACID style guarantees traditional straight-to-disk methods provide. Distributed transactions are a proven way to add ACID properties to data movements, however distributed transactions follow 1xN data movement semantics, where our highly parallel HPC environments employ MxN data movement semantics. In this paper we present a novel protocol that extends distributed transaction terminology to include MxN semantics which allows our data staging areas to benefit from ACID properties. We show that with our protocol we can provide resilient data staging with a limited performance penalty over current data staging implementations.

  3. Bryan Mound SPR cavern 113 remedial leach stage 1 analysis.

    SciTech Connect (OSTI)

    Rudeen, David Keith [GRAM, Inc., Albuquerque, NM; Weber, Paula D.; Lord, David L.

    2013-08-01T23:59:59.000Z

    The U.S. Strategic Petroleum Reserve implemented the first stage of a leach plan in 2011-2012 to expand storage volume in the existing Bryan Mound 113 cavern from a starting volume of 7.4 million barrels (MMB) to its design volume of 11.2 MMB. The first stage was terminated several months earlier than expected in August, 2012, as the upper section of the leach zone expanded outward more quickly than design. The oil-brine interface was then re-positioned with the intent to resume leaching in the second stage configuration. This report evaluates the as-built configuration of the cavern at the end of the first stage, and recommends changes to the second stage plan in order to accommodate for the variance between the first stage plan and the as-built cavern. SANSMIC leach code simulations are presented and compared with sonar surveys in order to aid in the analysis and offer projections of likely outcomes from the revised plan for the second stage leach.

  4. A HIGH REPETITION PLASMA MIRROR FOR STAGED ELECTRON ACCELERATION

    SciTech Connect (OSTI)

    Sokollik, Thomas; Shiraishi, Satomi; Osterhoff, Jens; Evans, Eugene; Gonsalves, Anthony; Nakamura, Kei; vanTilborg, Jeroen; Lin, Chen; Toth, Csaba; Leemans, Wim

    2011-07-22T23:59:59.000Z

    In order to build a compact, staged laser plasma accelerator the in-coupling of the laser beam to the different stages represents one of the key issues. To limit the spatial foot print and thus to realize a high overall acceleration gradient, a concept has to be found which realizes this in-coupling within a few centimeters. We present experiments on a tape-drive based plasma mirror which could be used to reflect the focused laser beam into the acceleration stage.

  5. aspects early stages: Topics by E-print Network

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

    Ryblewski 2012-07-03 104 A three stage model for the inner engine of Gamma Ray Burst: Prompt emission and early afterglow Astrophysics (arXiv) Summary: We propose a new model...

  6. albicans early stage: Topics by E-print Network

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

    Last Page Topic Index 101 A three stage model for the inner engine of Gamma Ray Burst: Prompt emission and early afterglow Astrophysics (arXiv) Summary: We propose a new model...

  7. advanced stage neuroblastoma: Topics by E-print Network

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

    - DSpace Summary: This thesis focuses on the design of a public theatre for the entire city of Boston, a "city stage." The intention is to explore through design the boundaries...

  8. advanced unresectable stage: Topics by E-print Network

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

    This thesis focuses on the design of a public theatre for the entire city of Boston, a "city stage." The intention is to explore through design the boundaries of an architectural...

  9. accelerator laboratory stages: Topics by E-print Network

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

    the nucleation is composed of two distinct phases, a quasi-static and an acceleration stage, followed by dynamic Nicolas, Chamot-Rooke 80 Optimizing Memory-Bound SYMV Kernel on...

  10. The roles of finance at different growth stages of startups

    E-Print Network [OSTI]

    Fu, Yue, S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    The purpose of this qualitative case study is to develop a framework that summarizes the finance-related problems faced by entrepreneurs at different development stages of their startups, as well as the possible solutions ...

  11. Impact of geometric variability on compressor repeating-stage performance

    E-Print Network [OSTI]

    Vincent, Antoine, 1979-

    2003-01-01T23:59:59.000Z

    The impact of geometric variability on compressor performance is investigated using a compressor repeating-stage model based on well-known correlations for profile losses, endwall blockage, deviation, and the onset of ...

  12. EA-0688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to construct the Hazardous Waste Staging Facility that would help to alleviate capacity problems as well as provide a single compliant...

  13. Extensible microprocessor without interlocked pipeline stages (emips), the reconfigurable microprocessor

    E-Print Network [OSTI]

    Pittman, Richard Neil

    2007-09-17T23:59:59.000Z

    have called our dynamically extensible microprocessor design the Extensible Microprocessor without Interlocked Pipeline Stages, or eMIPS. The eMIPS architecture uses the interaction of fixed and configurable logic available in modern...

  14. Residential Two-Stage Gas Furnaces - Do They Save Energy?

    E-Print Network [OSTI]

    Lekov, Alex; Franco, Victor; Lutz, James

    2006-01-01T23:59:59.000Z

    cycles the burners between a reduced heat input rate and offor between the maximum heat input rate and off. Two-stageReduced Mode Fuel Input Rate Heat from Fuel Burner Operating

  15. Catalytic two-stage coal hydrogenation and hydroconversion process

    DOE Patents [OSTI]

    MacArthur, James B. (Denville, NJ); McLean, Joseph B. (So. Somerville, NJ); Comolli, Alfred G. (Yardley, PA)

    1989-01-01T23:59:59.000Z

    A process for two-stage catalytic hydrogenation and liquefaction of coal to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal is slurried with a process-derived liquid solvent and fed at temperature below about 650.degree. F. into a first stage catalytic reaction zone operated at conditions which promote controlled rate liquefaction of the coal, while simultaneously hydrogenating the hydrocarbon recycle oils at conditions favoring hydrogenation reactions. The first stage reactor is maintained at 650.degree.-800.degree. F. temperature, 1000-4000 psig hydrogen partial pressure, and 10-60 lb coal/hr/ft.sup.3 reactor space velocity. The partially hydrogenated material from the first stage reaction zone is passed directly to the close-coupled second stage catalytic reaction zone maintained at a temperature at least about 25.degree. F. higher than for the first stage reactor and within a range of 750.degree.-875.degree. F. temperature for further hydrogenation and thermal hydroconversion reactions. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, which results in significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of undesirable residuum and unconverted coal and hydrocarbon gases, with use of less energy to obtain the low molecular weight products, while catalyst life is substantially increased.

  16. Staged fluidized-bed combustion and filter system

    DOE Patents [OSTI]

    Mei, Joseph S. (Morgantown, WV); Halow, John S. (Waynesburg, PA)

    1994-01-01T23:59:59.000Z

    A staged fluidized-bed combustion and filter system for substantially reducing the quantity of waste through the complete combustion into ash-type solids and gaseous products. The device has two fluidized-bed portions, the first primarily as a combustor/pyrolyzer bed, and the second as a combustor/filter bed. The two portions each have internal baffles to define stages so that material moving therein as fluidized beds travel in an extended route through those stages. Fluidization and movement is achieved by the introduction of gases into each stage through a directional nozzle. Gases produced in the combustor/pyrolyzer bed are permitted to travel into corresponding stages of the combustor/filter bed through screen filters that permit gas flow but inhibit solids flow. Any catalyst used in the combustor/filter bed is recycled. The two beds share a common wall to minimize total volume of the system. A slightly modified embodiment can be used for hot gas desulfurization and sorbent regeneration. Either side-by-side rectangular beds or concentric beds can be used. The system is particularly suited to the processing of radioactive and chemically hazardous waste.

  17. Multi-stage combustion using nitrogen-enriched air

    DOE Patents [OSTI]

    Fischer, Larry E.; Anderson, Brian L.

    2004-09-14T23:59:59.000Z

    Multi-stage combustion technology combined with nitrogen-enriched air technology for controlling the combustion temperature and products to extend the maintenance and lifetime cycles of materials in contact with combustion products and to reduce pollutants while maintaining relatively high combustion and thermal cycle efficiencies. The first stage of combustion operates fuel rich where most of the heat of combustion is released by burning it with nitrogen-enriched air. Part of the energy in the combustion gases is used to perform work or to provide heat. The cooled combustion gases are reheated by additional stages of combustion until the last stage is at or near stoichiometric conditions. Additional energy is extracted from each stage to result in relatively high thermal cycle efficiency. The air is enriched with nitrogen using air separation technologies such as diffusion, permeable membrane, absorption, and cryogenics. The combustion method is applicable to many types of combustion equipment, including: boilers, burners, turbines, internal combustion engines, and many types of fuel including hydrogen and carbon-based fuels including methane and coal.

  18. Method for encapsulating hazardous wastes using a staged mold

    DOE Patents [OSTI]

    Unger, Samuel L. (Los Angeles, CA); Telles, Rodney W. (Alhambra, CA); Lubowitz, Hyman R. (Rolling Hills Estates, CA)

    1989-01-01T23:59:59.000Z

    A staged mold and method for stabilizing hazardous wastes for final disposal by molding an agglomerate of the hazardous wastes and encapsulating the agglomerate. Three stages are employed in the process. In the first stage, a first mold body is positioned on a first mold base, a mixture of the hazardous wastes and a thermosetting plastic is loaded into the mold, the mixture is mechanically compressed, heat is applied to cure the mixture to form a rigid agglomerate, and the first mold body is removed leaving the agglomerate sitting on the first mold base. In the second stage, a clamshell second mold body is positioned around the agglomerate and the first mold base, a powdered thermoplastic resin is poured on top of the agglomerate and in the gap between the sides of the agglomerate and the second mold body, the thermoplastic is compressed, heat is applied to melt the thermoplastic, and the plastic is cooled jacketing the agglomerate on the top and sides. In the third stage, the mold with the jacketed agglomerate is inverted, the first mold base is removed exposing the former bottom of the agglomerate, powdered thermoplastic is poured over the former bottom, the first mold base is replaced to compress the thermoplastic, heat is applied to melt the new thermoplastic and the top part of the jacket on the sides, the plastic is cooled jacketing the bottom and fusing with the jacketing on the sides to complete the seamless encapsulation of the agglomerate.

  19. Early stages in the development of stress corrosion cracks

    SciTech Connect (OSTI)

    Jones, R.H.; Simonen, E.P.

    1993-12-01T23:59:59.000Z

    Processes in growth of short cracks and stage I of long stress corrosion cracks were identified and evaluated. There is evidence that electrochemical effects can cause short stress corrosion cracks to grow at rates faster or slower than long cracks. Short cracks can grow at faster rates than long cracks for a salt film dissolution growth mechanism or from reduced oxygen inhibition of hydrolytic acidification. An increasing crack growth rate with increasing crack length could result from a process of increasing crack tip concentration of a critical anion, such as Cl{sup {minus}}, with increasing crack length in a system where the crack velocity is dependent on the Cl{sup {minus}} or some other anion concentration. An increasing potential drop between crack tip and mouth would result in an increased anion concentration at the crack tip and hence an increasing crack velocity. Stage I behavior of long cracks is another early development stage in the life of a stress corrosion crack which is poorly understood. This stage can be described by da/dt = AK{sup m} where da/dt is crack velocity, A is a constant, K is stress intensity and m ranges from 2 to 24 for a variety of materials and environments. Only the salt film dissolution model was found to quantitatively describe this stage; however, the model was only tested on one material and its general applicability is unknown.

  20. Experiments and Modeling of Two-Stage Combustion in Low-Emissions...

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

    Experiments and Modeling of Two-Stage Combustion in Low-Emissions Diesel Engines Experiments and Modeling of Two-Stage Combustion in Low-Emissions Diesel Engines Two-stage...

  1. Ultra-Low-Power Adder Stage Design for Exascale Floating Point Units

    E-Print Network [OSTI]

    Del Barrio, AA; Bagherzadeh, N; Hermida, R

    2014-01-01T23:59:59.000Z

    date: March 2014. Ultra-Low-Power Adder Stage Design fordate: March 2014. Ultra-Low-Power Adder Stage Design fordate: March 2014. Ultra-Low-Power Adder Stage Design for

  2. Ultra high vacuum heating and rotating specimen stage

    DOE Patents [OSTI]

    Coombs, A.W. III

    1995-05-02T23:59:59.000Z

    A heating and rotating specimen stage provides for simultaneous specimen heating and rotating. The stage is ideally suited for operation in ultrahigh vacuum (1{times}10{sup {minus}9} torr or less), but is useful at atmosphere and in pressurized systems as well. A specimen is placed on a specimen holder that is attached to a heater that, in turn, is attached to a top housing. The top housing is rotated relative to a bottom housing and electrically connected thereto by electrically conductive brushes. This stage is made of materials that are compatible with UHV, able to withstand high temperatures, possess low outgassing rates, are gall and seize resistant, and are able to carry substantial electrical loading without overheating. 5 figs.

  3. Ultra high vacuum heating and rotating specimen stage

    DOE Patents [OSTI]

    Coombs, III, Arthur W. (Patterson, CA)

    1995-01-01T23:59:59.000Z

    A heating and rotating specimen stage provides for simultaneous specimen heating and rotating. The stage is ideally suited for operation in ultrahigh vacuum (1.times.10.sup.-9 torr or less), but is useful at atmosphere and in pressurized systems as well. A specimen is placed on a specimen holder that is attached to a heater that, in turn, is attached to a top housing. The top housing is rotated relative to a bottom housing and electrically connected thereto by electrically conductive brushes. This stage is made of materials that are compatible with UHV, able to withstand high temperatures, possess low outgassing rates, are gall and seize resistant, and are able to carry substantial electrical loading without overheating.

  4. Enhancing Staging Capabilities at the Device Assembly Facility

    SciTech Connect (OSTI)

    Kanning, R. A.; Long, R. G.; Garcia, B. O.; Williams, V. D.

    2013-06-08T23:59:59.000Z

    The radioactive material limits allowed by the Documented Safety Analysis (DSA) at the Nevada National Security Site (NNSS) Device Assembly Facility (DAF) can support larger quantities than the floor space will accommodate. In order to maximize the full staging bunker capability, National Security Technologies, LLC, (NSTec) is developing a plan to take advantage of these high inventory limits and evaluate staging options such as shelves, racks, and mezzanines. This plan will investigate cost and evaluate U.S. Department of Energy (DOE) complex-wide alternatives used at other sites (Highly Enriched Uranium Manufacturing Facility, Pantex, Los Alamos National Laboratory, Sandia National Laboratories, etc.) that addressed similar situations.

  5. Experiments and Modeling of Two-Stage Combustion in Low-Emissions...

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

    DEER, August 4, 2008 Experiments and Modeling of Two Experiments and Modeling of Two - - Stage Combustion in Stage Combustion in Low Low - - Emissions Diesel Engines Emissions...

  6. A Systematic Analysis of Epigenetic Genes across Different Stages of Lung Adenocarcinoma Akshay Desai1

    E-Print Network [OSTI]

    Zhou, Yaoqi

    A Systematic Analysis of Epigenetic Genes across Different Stages of Lung Adenocarcinoma Akshay across different stages of lung adenocarcinoma (LUAD). Method: An integrative system biology approach

  7. Two-stage coal gasification and desulfurization apparatus

    DOE Patents [OSTI]

    Bissett, Larry A. (Morgantown, WV); Strickland, Larry D. (Morgantown, WV)

    1991-01-01T23:59:59.000Z

    The present invention is directed to a system which effectively integrates a two-stage, fixed-bed coal gasification arrangement with hot fuel gas desulfurization of a first stream of fuel gas from a lower stage of the two-stage gasifier and the removal of sulfur from the sulfur sorbent regeneration gas utilized in the fuel-gas desulfurization process by burning a second stream of fuel gas from the upper stage of the gasifier in a combustion device in the presence of calcium-containing material. The second stream of fuel gas is taken from above the fixed bed in the coal gasifier and is laden with ammonia, tar and sulfur values. This second stream of fuel gas is burned in the presence of excess air to provide heat energy sufficient to effect a calcium-sulfur compound forming reaction between the calcium-containing material and sulfur values carried by the regeneration gas and the second stream of fuel gas. Any ammonia values present in the fuel gas are decomposed during the combustion of the fuel gas in the combustion chamber. The substantially sulfur-free products of combustion may then be combined with the desulfurized fuel gas for providing a combustible fluid utilized for driving a prime mover.

  8. Staging and storage facility feasibility study. Final report

    SciTech Connect (OSTI)

    Swenson, C.E. [Westinghouse Hanford Co., Richland, WA (United States)

    1995-02-01T23:59:59.000Z

    This study was performed to investigate the feasibility of adapting the design of the HWVP Canister Storage Building (CSB) to meet the needs of the WHC Spent Nuclear Fuel Project for Staging and Storage Facility (SSF), and to develop Rough Order of Magnitude (ROM) cost and schedule estimates.

  9. Commitment Under Uncertainty: Two-Stage Stochastic Matching Problems

    E-Print Network [OSTI]

    Mathieu, Claire

    on classical combinatorial optimization problems [23]: set cover, minimum spanning tree, Steiner tree, maximum structures, with the notable exception of Gupta and P´al's work on stochastic Steiner Tree [9]. SecondCommitment Under Uncertainty: Two-Stage Stochastic Matching Problems Irit Katriel , Claire Kenyon

  10. On Two-Stage Stochastic Minimum Spanning Kedar Dhamdhere1

    E-Print Network [OSTI]

    Ravi, R.

    On Two-Stage Stochastic Minimum Spanning Trees Kedar Dhamdhere1 , R. Ravi2 , and Mohit Singh2 1}@andrew.cmu.edu Abstract. We consider the undirected minimum spanning tree problem in a stochastic optimization setting algorithm. We then consider the Stochastic minimum spanning tree problem in a more general black-box model

  11. Detecting Internet Worms at Early Stage Shigang Chen Sanjay Ranka

    E-Print Network [OSTI]

    Chen, Shigang

    proposes an Internet-worm early warning system that automatically detects concerted scan activities on the responsiveness of this early warning system. Keywords: Enterprise Security Management, Internet Worm, Early and derives possible signatures of worm attacks. Its goal is to issue warning at the early stage of worm

  12. International Internship Program "UniCredit Stage Abroad Exchange Programme"

    E-Print Network [OSTI]

    Robbiano, Lorenzo

    International Internship Program "UniCredit Stage ­ Abroad Exchange Programme" Application details scholarships to fund intra-curricular internships are offered to top students of higher education in the Uni environment with challenging tasks Pre-defined scope and plan of the internship (activities, goal

  13. DIAMOND CHEMICAL VAPOR DEPOSITION Nucleation and Early Growth Stages

    E-Print Network [OSTI]

    Dandy, David

    a reality. Epi- taxial diamond has been grown on diamond and cubic-BN. Polycrystalline diamond films haveDIAMOND CHEMICAL VAPOR DEPOSITION Nucleation and Early Growth Stages by Huimin Liu David S. Dandy of high-quality diamond coatings on preshaped parts and synthesis of free-standing shapes of diamond

  14. Vacuum compatible, high-speed, 2-D mirror tilt stage

    DOE Patents [OSTI]

    Denham; Paul E. (Crockett, CA)

    2007-09-25T23:59:59.000Z

    A compact and vacuum compatible magnetic-coil driven tiltable stage that is equipped with a high efficiency reflective coating can be employed as a scanner in EUV applications. The drive electronics for the scanner is fully in situ programmable and rapidly switchable.

  15. SCIENCE ON STAGE TOWARDS A REJUVENATED SCIENCE TEACHING

    E-Print Network [OSTI]

    Madsen, Claus

    SCIENCE ON STAGE ­ TOWARDS A REJUVENATED SCIENCE TEACHING IN EUROPE Claus Madsen ESO, Karl as every-day experience of many science teachers sug- gest a `disconnect' between the tenants of traditional, formal science teaching and contemporary youth culture. Clearly formal science teaching fails

  16. Aerodynamic performance measurements of a film-cooled turbine stage

    E-Print Network [OSTI]

    Keogh, Rory (Rory Colm), 1968-

    2001-01-01T23:59:59.000Z

    The goal of this research is to measure the aerodynamic performance of a film-cooled turbine stage and to quantify the loss caused by film-cooling. A secondary goal of the research is to provide a detailed breakdown of the ...

  17. Staged Hybrid Genetic Search for Seismic Data Imaging

    E-Print Network [OSTI]

    Whitley, Darrell

    Christof Stork yy and Tony Kusuma yy Abstract --- Seismic data interpretation problems are typ­ icallyStaged Hybrid Genetic Search for Seismic Data Imaging Keith E. Mathias, y L. Darrell Whitley, y. Geological exploration em­ ploys seismic reflection surveys to obtain subsurface im­ ages of geologic beds

  18. Investigating Tropical Deforestation Using Two-Stage Spatially Misaligned

    E-Print Network [OSTI]

    Silander Jr., John A.

    Investigating Tropical Deforestation Using Two-Stage Spatially Misaligned Regression Models Deepak Deforestation in the tropics has been a major concern in conservationscience for more than 20 years. Estimates of tropical deforestation over the past few decades have shown an alarming accelerationin forest lost. Concern

  19. Thermonuclear Supernovae: Simulations of the Deflagration Stage and Their Implications

    E-Print Network [OSTI]

    V. N. Gamezo; A. M. Khokhlov; E. S. Oran; A. Y. Chtchelkanova; R. O. Rosenberg

    2003-01-01T23:59:59.000Z

    Large-scale three-dimensional numerical simulations of the deflagration stage of a thermonuclear supernova explosion show the formation and evolution of a highly convoluted turbulent flame in a gravitational field of an expanding carbon-oxygen white dwarf. The flame dynamics is dominated by the

  20. Groundwater Data Analysis M.Tech Thesis Stage I Report

    E-Print Network [OSTI]

    Sohoni, Milind

    Groundwater Data Analysis M.Tech Thesis Stage I Report Submitted in partial fulfillment Institute of Technology Bombay October 2011 #12;Abstract In this project work we did groundwater data(GSDA), Pune. We have analyzed groundwater data of 120 observation wells over the period of 35 years

  1. Compression of redundancy free trellis stages in Turbo-Decoder

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Compression of redundancy free trellis stages in Turbo-Decoder E. Boutillon, J. Sánchez-Rojas and C. Marchand For turbo code with coding rate close to one, the high puncturing rate induces long sequences. The computation is reduced accordingly. Introduction: Turbo codes with coding rate close to one are specified

  2. Alternative Heat Recovery Options for Single-Stage Spray Dryers

    E-Print Network [OSTI]

    Wagner, J. R.

    1984-01-01T23:59:59.000Z

    Many powdered products are dried to their final moisture content by use of spray dryers. A basic spray dryer mixes an aqueous feedstock with heated air, vaporizing the water in the feedstock and producing the final dried powder in a single stage...

  3. Stage I Results Social Learning Strategies Tournament Social Learning Strategies Tournament

    E-Print Network [OSTI]

    Stage I Results Social Learning Strategies Tournament 1 Social Learning Strategies Tournament This document provides a report on the first stage of analysis of submitted entries to the social learning, and the results for those strategies that did not progress to Stage II. Stage I details The simulations each

  4. DEVELOPMENT OF COLD CLIMATE HEAT PUMP USING TWO-STAGE COMPRESSION

    SciTech Connect (OSTI)

    Rice, C Keith [ORNL; Abdelaziz, Omar [ORNL; Shrestha, Som S [ORNL

    2015-01-01T23:59:59.000Z

    This paper uses a well-regarded, hardware based heat pump system model to investigate a two-stage economizing cycle for cold climate heat pump applications. The two-stage compression cycle has two variable-speed compressors. The high stage compressor was modelled using a compressor map, and the low stage compressor was experimentally studied using calorimeter testing. A single-stage heat pump system was modelled as the baseline. The system performance predictions are compared between the two-stage and single-stage systems. Special considerations for designing a cold climate heat pump are addressed at both the system and component levels.

  5. Statistical Methods and Tools for Hanford Staged Feed Tank Sampling

    SciTech Connect (OSTI)

    Fountain, Matthew S.; Brigantic, Robert T.; Peterson, Reid A.

    2013-10-01T23:59:59.000Z

    This report summarizes work conducted by Pacific Northwest National Laboratory to technically evaluate the current approach to staged feed sampling of high-level waste (HLW) sludge to meet waste acceptance criteria (WAC) for transfer from tank farms to the Hanford Waste Treatment and Immobilization Plant (WTP). The current sampling and analysis approach is detailed in the document titled Initial Data Quality Objectives for WTP Feed Acceptance Criteria, 24590-WTP-RPT-MGT-11-014, Revision 0 (Arakali et al. 2011). The goal of this current work is to evaluate and provide recommendations to support a defensible, technical and statistical basis for the staged feed sampling approach that meets WAC data quality objectives (DQOs).

  6. Multi-stage depressed collector for small orbit gyrotrons

    DOE Patents [OSTI]

    Singh, A.; Ives, R.L.; Schumacher, R.V.; Mizuhara, Y.M.

    1998-07-14T23:59:59.000Z

    A multi-stage depressed collector for receiving energy from a small orbit gyrating electron beam employs a plurality of electrodes at different potentials for sorting the individual electrons on the basis of their total energy level. Magnetic field generating coils, for producing magnetic fields and magnetic iron for magnetic field shaping produce adiabatic and controlled non-adiabatic transitions of the incident electron beam to further facilitate the sorting. 9 figs.

  7. Multi-stage depressed collector for small orbit gyrotrons

    DOE Patents [OSTI]

    Singh, Amarjit (Greenbelt, MD); Ives, R. Lawrence (Saratoga, CA); Schumacher, Richard V. (Campbell, CA); Mizuhara, Yosuke M. (Palo Alto, CA)

    1998-01-01T23:59:59.000Z

    A multi-stage depressed collector for receiving energy from a small orbit gyrating electron beam employs a plurality of electrodes at different potentials for sorting the individual electrons on the basis of their total energy level. Magnetic field generating coils, for producing magnetic fields and magnetic iron for magnetic field shaping produce adiabatic and controlled non-adiabatic transitions of the incident electron beam to further facilitate the sorting.

  8. Single Stage Contactor Testing Of The Next Generation Solvent Blend

    SciTech Connect (OSTI)

    Herman, D. T.; Peters, T. B.; Duignan, M. R.; Williams, M. R.; Poirier, M. R.; Brass, E. A.; Garrison, A. G.; Ketusky, E. T.

    2014-01-06T23:59:59.000Z

    The Modular Caustic Side Solvent Extraction (CSSX) Unit (MCU) facility at the Savannah River Site (SRS) is actively pursuing the transition from the current BOBCalixC6 based solvent to the Next Generation Solvent (NGS)-MCU solvent to increase the cesium decontamination factor. To support this integration of NGS into the MCU facility the Savannah River National Laboratory (SRNL) performed testing of a blend of the NGS (MaxCalix based solvent) with the current solvent (BOBCalixC6 based solvent) for the removal of cesium (Cs) from the liquid salt waste stream. This testing utilized a blend of BOBCalixC6 based solvent and the NGS with the new extractant, MaxCalix, as well as a new suppressor, tris(3,7dimethyloctyl) guanidine. Single stage tests were conducted using the full size V-05 and V-10 liquid-to-liquid centrifugal contactors installed at SRNL. These tests were designed to determine the mass transfer and hydraulic characteristics with the NGS solvent blended with the projected heel of the BOBCalixC6 based solvent that will exist in MCU at time of transition. The test program evaluated the amount of organic carryover and the droplet size of the organic carryover phases using several analytical methods. The results indicate that hydraulically, the NGS solvent performed hydraulically similar to the current solvent which was expected. For the organic carryover 93% of the solvent is predicted to be recovered from the stripping operation and 96% from the extraction operation. As for the mass transfer, the NGS solvent significantly improved the cesium DF by at least an order of magnitude when extrapolating the One-stage results to actual Seven-stage extraction operation with a stage efficiency of 95%.

  9. Rapid Cycling Synchrotron (RCS) sngle-stage kicker magnet

    SciTech Connect (OSTI)

    Suddeth, D.E.; Volk, G.J.

    1980-01-01T23:59:59.000Z

    A new single stage kicker magnet system is designed and is being fabricated for the RCS accelerator of the Intense Pulsed Neutron Source (IPNS-I) at the Argonne National Laboratory. This system will replace the two stage kicker in present use. The magnet aperture is 10 cm wide by 5 cm high and the magnetic length is 0.89 m. The magnetic field intensity is 0.1021 T for a 25 milliradian kick to the 500 MeV proton beam. A field rise time (10 to 90%) of 80 ns and a flattop of 100 ns is needed. The magnetic field fall time is not critical so a lumped parameter magnet with a 7.2 ohm load will be used. The electric current required through the single turn magnet is 4863 A. A new energy storage and switching system is designed and is being fabricated for energizing the magnets. The techniques and hardware used will be described along with some of the experience gained in the use of the two stage system which will help to improve the new design.

  10. Extreme-UV scanning wafer and reticle stages

    DOE Patents [OSTI]

    Williams, Mark E. (Windham, NH)

    2002-01-01T23:59:59.000Z

    A stage for precise positioning of a chuck in three orthogonal linear axes and in three orthogonal rotation axes that includes first and second subassemblies. The a first subassembly includes (i) a monolithic mirror that supports the chuck wherein the monolithic mirror has at least two polished orthogonal faces for interferometric determination of the X, Y, and .THETA.z positions; (ii) a plurality of electromagnetic actuators that control fine positioning in all six axes and coarse positioning in one axis; (iii) a position sensor for measuring the vertical Z position of the monolithic mirror; and (iv) a Lorentz actuator, that includes magnet array, for effecting motion in the Y axis. The a second subassembly comprising a stepping axis beam over which the first subassembly is suspended, wherein the stepping axis beam includes a drive coil array for the Lorentz actuator. T the stage can also include a cable stage subassembly that is positioned a fixed distance away from the monolithic mirror and/or a mechanical zero reference for the first subassembly.

  11. Two-stage Catalytic Reduction of NOx with Hydrocarbons

    SciTech Connect (OSTI)

    Umit S. Ozkan; Erik M. Holmgreen; Matthew M. Yung; Jonathan Halter; Joel Hiltner

    2005-12-21T23:59:59.000Z

    A two-stage system for the catalytic reduction of NO from lean-burn natural gas reciprocating engine exhaust is investigated. Each of the two stages uses a distinct catalyst. The first stage is oxidation of NO to NO{sub 2} and the second stage is reduction of NO{sub 2} to N{sub 2} with a hydrocarbon. The central idea is that since NO{sub 2} is a more easily reduced species than NO, it should be better able to compete with oxygen for the combustion reaction of hydrocarbon, which is a challenge in lean conditions. Early work focused on demonstrating that the N{sub 2} yield obtained when NO{sub 2} was reduced was greater than when NO was reduced. NO{sub 2} reduction catalysts were designed and silver supported on alumina (Ag/Al{sub 2}O{sub 3}) was found to be quite active, able to achieve 95% N{sub 2} yield in 10% O{sub 2} using propane as the reducing agent. The design of a catalyst for NO oxidation was also investigated, and a Co/TiO{sub 2} catalyst prepared by sol-gel was shown to have high activity for the reaction, able to reach equilibrium conversion of 80% at 300 C at GHSV of 50,000h{sup -1}. After it was shown that NO{sub 2} could be more easily reduced to N{sub 2} than NO, the focus shifted on developing a catalyst that could use methane as the reducing agent. The Ag/Al{sub 2}O{sub 3} catalyst was tested and found to be inactive for NOx reduction with methane. Through iterative catalyst design, a palladium-based catalyst on a sulfated-zirconia support (Pd/SZ) was synthesized and shown to be able to selectively reduce NO{sub 2} in lean conditions using methane. Development of catalysts for the oxidation reaction also continued and higher activity, as well as stability in 10% water, was observed on a Co/ZrO{sub 2} catalyst, which reached equilibrium conversion of 94% at 250 C at the same GHSV. The Co/ZrO{sub 2} catalyst was also found to be extremely active for oxidation of CO, ethane, and propane, which could potential eliminate the need for any separate oxidation catalyst. At every stage, catalyst synthesis was guided by the insights gained through detailed characterization of the catalysts using many surface and bulk analysis techniques such as X-ray diffraction, X-ray photoelectron spectroscopy, Temperature-programmed Reduction, Temperature programmed Desorption, and Diffuse Reflectance InfraRed Fourier Transform Spectroscopy as well as steady state reaction experiments. Once active catalysts for each stage had been developed, a physical mixture of the two catalysts was tested for the reduction of NO with methane in lean conditions. These experiments using a mixture of the catalysts produced N2 yields as high as 90%. In the presence of 10% water, the catalyst mixture produced 75% N{sub 2} yield, without any optimization. The dual catalyst system developed has the potential to be implemented in lean-burn natural gas engines for reducing NOx in lean exhaust as well as eliminating CO and unburned hydrocarbons without any fuel penalty or any system modifications. If funding continues, future work will focus on improving the hydrothermal stability of the system to bring the technology closer to application.

  12. An algorithm for solving branching, multi-stage optimization systems

    E-Print Network [OSTI]

    Burns, Jack Patton

    1972-01-01T23:59:59.000Z

    August 1972 ABSTRACT An Algor1thm For Solv1ng Branching, Multistage Optimization Systems. (August, 1972) Jack Patton Burns, B. S. , University of Arizona; B. S. , Texas A&M Un1versity Directed by: Dr. Wilbur L. Meier In recent years, the concern... or continuous and the stage returns and transition functions can be linear or nonlinear. For cont1nuous systems, the algorithm uses a Fibonacc1 search routine. A cho1ce of three optional outputs 1s available depending on the information des1red by the user...

  13. Analysis of multi-stage centrifugal pumps using transfer matrices

    E-Print Network [OSTI]

    Kelly, J. Howard

    1989-01-01T23:59:59.000Z

    (m] angle about y-axis [rod] angular velocity about y ? axis [rod/s] damping exponent of free vibration ~rod/s] 180 degrees converted to radians phase angle associated with imbalance [deg angle about x ? axis [rad] angular acceleration about x... APPENDIX J APPENDIX K 176 180 VITA 185 LIST OP TABLES Table Page 1 Natural Frequencies using Single Spool Model (rad(sec) 59 2 Eigenvalue Accuracy Comparison (rad/sec) 59 3 Equilibrium Comparison 4 Natural Frequency Calculations for an 11 Stage...

  14. Nontrivial Dynamics in the Early Stages of Inflation

    E-Print Network [OSTI]

    E. Calzetta; C. El Hasi

    1994-08-05T23:59:59.000Z

    Inflationary cosmologies, regarded as dynamical systems, have rather simple asymptotic behavior, insofar as the cosmic baldness principle holds. Nevertheless, in the early stages of an inflationary process, the dynamical behavior may be very complex. In this paper, we show how even a simple inflationary scenario, based on Linde's ``chaotic inflation'' proposal, manifests nontrivial dynamical effects such as the breakup of invariant tori, formation of cantori and Arnol'd's diffusion. The relevance of such effects is highlighted by the fact that even the occurrence or not of inflation in a given Universe is dependent upon them.

  15. Optimization of a two stage light-gas gun

    E-Print Network [OSTI]

    Rynearson, Richard James

    1972-01-01T23:59:59.000Z

    AND ACCELERATION AT TIME "t" CALCULATE NEW PISTON VELOCITY AND POSITION BASED OH STEP 5 DECREASE ht HAS DIAPHRAGM OPENEDT YES CALCULATE PROJECTILE 6c ACCELERATION AT TIME "t" AND NO( VELOCITY AND POSITION NO CALCULATE dT/dt FOR LIGHT GAS AT ?t+dt? 6e... Subject: Aerospace Engineering OPTIMIZATION OF A TWO STAGE LIGHT-GAS GUN A Thesis by RICHARD JAMES RYNEARSON Approved as to style and content by: ( irman of Comni ttee) J. L. Rand (Head of Department) A. E. Cronk (Member) D. J. Norton (Member) C...

  16. Method of operating a two-stage coal gasifier

    DOE Patents [OSTI]

    Tanca, Michael C. (Tariffville, CT)

    1982-01-01T23:59:59.000Z

    A method of operating an entrained flow coal gasifier (10) via a two-stage gasification process. A portion of the coal (18) to be gasified is combusted in a combustion zone (30) with near stoichiometric air to generate combustion products. The combustion products are conveyed from the combustion zone into a reduction zone (32) wherein additional coal is injected into the combustion products to react with the combustion products to form a combustible gas. The additional coal is injected into the reduction zone as a mixture (60) consisting of coal and steam, preferably with a coal-to-steam weight ratio of approximately ten to one.

  17. Thermonuclear Supernovae: Simulations of the Deflagration Stage and Their Implications

    E-Print Network [OSTI]

    V. N. Gamezo; A. M. Khokhlov; E. S. Oran; A. Y. Chtchelkanova; R. O. Rosenberg

    2002-12-03T23:59:59.000Z

    Large-scale three-dimensional numerical simulations of the deflagration stage of a thermonuclear supernova explosion show the formation and evolution of a highly convoluted turbulent flame in a gravitational field of an expanding carbon-oxygen white dwarf. The flame dynamics is dominated by the gravity-induced Rayleigh-Taylor instability that controls the burning rate. The thermonuclear deflagration releases enough energy to produce a healthy explosion. The turbulent flame, however, leaves large amounts of unburnt and partially burnt material near the star center, whereas observations imply these materials only in outer layers. This disagreement could be resolved if the deflagration triggers a detonation.

  18. Low profile, high load vertical rolling positioning stage

    DOE Patents [OSTI]

    Shu, Deming (Darien, IL); Barraza, Juan (Aurora, IL)

    1996-01-01T23:59:59.000Z

    A stage or support platform assembly for use in a synchrotron accurately positions equipment to be used in the beam line of the synchrotron. The support platform assembly includes an outer housing in which is disposed a lifting mechanism having a lifting platform or stage at its upper extremity on which the equipment is mounted. A worm gear assembly is located in the housing and is adapted to raise and lower a lifting shaft that is fixed to the lifting platform by an anti-binding connection. The lifting platform is moved vertically as the lifting shaft is moved vertically. The anti-binding connection prevents the shaft from rotating with respect to the platform, but does permit slight canting of the shaft with respect to the lifting platform so as to eliminate binding and wear due to possible tolerance mismatches. In order to ensure that the lifting mechanism does not move in a horizontal direction as it is moved vertically, at least three linear roller bearing assemblies are arranged around the outer-periphery of the lifting mechanism. One of the linear roller bearing assemblies can be adjusted so that the roller bearings apply a loading force against the lifting mechanism. Alternatively, a cam mechanism can be used to provide such a loading force.

  19. The prospects for electric and hybrid electric vehicles: Second-stage results of a two-stage Delphi study

    SciTech Connect (OSTI)

    Ng, H.K.; Anderson, J.L.; Santini, D.J.; Vyas, A.D.

    1996-08-01T23:59:59.000Z

    This study was conducted to collect information for a technical and economic assessment of electric (EV) and hybrid (HEV) vehicles. The first-stage worldwide survey was completed in fall 1994, while the second-stage was completed by summer 1995. The paper reports results from the second round of the survey and major differences between the two rounds. This second-stage international survey obtained information from 93 expert respondents from the automotive technology field. Key results: EVs will penetrate the market first, followed by internal combustion engine HEVs, while gas turbine and fuel cell HEVs will come after 2020. By 2020, EVs and internal combustion engine HEVs will have a 15% share of the new vehicle market; they will also cost 18-50% more and will be slightly inferior to 1993 gasoline cars. AC induction motor is projected to be superior to DC and DC brushless motors by 2020, although the DC motor will be less expensive in 2000. DC brushless motors are projected to be the most expensive. Though generally declining, battery costs will remain high. EVs are believed to be effective in reducing urban emissions; however, their costs must be reduced drastically. Petroleum is expected to be the predominant fuel for hybrid vehicles through 2020. Mean energy equivalent fuel economy of electric drivetrain vehicles is projected to be 20-40% greater than for conventional vehicles in 2000, and to rise a few percents during the projection period. Respondents anticipate only a 16% increase in conventional vehicle fuel economy from 2000 to 2020.

  20. Characterization of the Acoustic Interactions in a Two-Stage Multi-Injection Combustor Fed with

    E-Print Network [OSTI]

    Boyer, Edmond

    Characterization of the Acoustic Interactions in a Two-Stage Multi-Injection Combustor Fed and efficient mixing. A laboratory-scale staged multipoint combustor is developed in the present study

  1. Entering a New Stage of Learning from the U.S. Fuel Cell Electric...

    Energy Savers [EERE]

    Entering a New Stage of Learning from the U.S. Fuel Cell Electric Vehicle Demonstration Project: Preprint Entering a New Stage of Learning from the U.S. Fuel Cell Electric Vehicle...

  2. Film Cooling, Heat Transfer and Aerodynamic Measurements in a Three Stage Research Gas Turbine

    E-Print Network [OSTI]

    Suryanarayanan, Arun

    2010-07-14T23:59:59.000Z

    The existing 3-stage turbine research facility at the Turbomachinery Performance and Flow Research Laboratory (TPFL), Texas A and M University, is re-designed and newly installed to enable coolant gas injection on the first stage rotor platform...

  3. Application of a design optimization strategy to multi-stage compressor matching

    E-Print Network [OSTI]

    Bert, Jérôme

    2006-01-01T23:59:59.000Z

    A major challenge in the design of multi-stage compressors is the matching of stages to enable stable operation over a large range of mass flows and operating conditions. Particularly in turbofan low-pressure compressors, ...

  4. On developing business architectures : a multi-framework evaluation of an early-stage enterprise

    E-Print Network [OSTI]

    Montoya, Mario, 1978-

    2010-01-01T23:59:59.000Z

    Early-stage enterprises are characterized by leveraging limited resources during periods of accelerating industry growth and relatively high uncertainty. This thesis is an examination of an early-stage enterprise within ...

  5. Original article Effect of maturity stage of Italian rye grass and

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Original article Effect of maturity stage of Italian rye grass and lucerne on ruminal nitrogen samples of rye grass and 5 of lucerne were harvested during the 1 st cycle of growth at different stages

  6. Optimal Design and Fabrication of a Piezoactuated Flexure XYZ Parallel Micropositioning Stage

    E-Print Network [OSTI]

    Li, Yangmin

    and Technology, University of Macau, Av. Padre Tom´as Pereira, Taipa, Macao SAR, P. R. China. Corresponding not be realized, a decoupled XYZ stage with proper calibrations is preferred [3]. Moreover, a decoupled stage

  7. Recirculation on a single stage of vertical flow constructed wetland: treatment limits and operation modes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Recirculation on a single stage of vertical flow constructed wetland: treatment limits French vertical flow constructed wetlands (VFCWs) plant comprises two stages of treatment which the first and treatment performances in different operating conditions. Results showed good performances

  8. Dynamics of Multi-Stage Bladed Disks Systems Denis Laxalde(a,b)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of multi-stage cyclic structures such as turbomachinery compressors or turbines. Each stage is modeled diameter problems separately. The method is first validated on a simple case study which shows good compressor stages is then presented. Then the forced response application is presented in which synchronous

  9. 0018-9162/00/$10.00 2000 IEEE2 Computer A Staged Model for

    E-Print Network [OSTI]

    change during a system's life cycle. Manny Lehman3 documented the inevitability of the evolution stage and late stages of the life cycle.5 Initial development During initial development, engineers build0018-9162/00/$10.00 © 2000 IEEE2 Computer A Staged Model for the Software Life Cycle S oftware

  10. Sensitivity of a Compressor Repeating-Stage to Geometry Jer^ome LAVAINNE

    E-Print Network [OSTI]

    Peraire, Jaime

    Sensitivity of a Compressor Repeating-Stage to Geometry Variation by J´er^ome LAVAINNE Dipl^ome d Students #12;2 #12;Sensitivity of a Compressor Repeating-Stage to Geometry Variation by J´er^ome LAVAINNE and probabilistic sensitivity analyses of an embedded compressor stage perfor- mance to blade geometric variations

  11. PhD position: Numerical study on ice accretion on fan blades and compressor stages

    E-Print Network [OSTI]

    Twente, Universiteit

    PhD position: Numerical study on ice accretion on fan blades and compressor stages Within on fan blades and compressor stages. This research is carried out in the framework of the HAIC (High a computational tool to predict the ice accretion on fan blades and the first compressor stages of commercial jet

  12. Alternatives generation and analysis for phase I intermediate waste feed staging system design requirements

    SciTech Connect (OSTI)

    Britton, M.D.

    1996-10-02T23:59:59.000Z

    This document provides; a decision analysis summary; problem statement; constraints, requirements, and assumptions; decision criteria; intermediate waste feed staging system options and alternatives generation and screening; intermediate waste feed staging system design concepts; intermediate waste feed staging system alternative evaluation and analysis; and open issues and actions.

  13. Self-regulating fuel staging port for turbine combustor

    DOE Patents [OSTI]

    Van Nieuwenhuizen, William F.; Fox, Timothy A.; Williams, Steven

    2014-07-08T23:59:59.000Z

    A port (60) for axially staging fuel and air into a combustion gas flow path 28 of a turbine combustor (10A). A port enclosure (63) forms an air path through a combustor wall (30). Fuel injectors (64) in the enclosure provide convergent fuel streams (72) that oppose each other, thus converting velocity pressure to static pressure. This forms a flow stagnation zone (74) that acts as a valve on airflow (40, 41) through the port, in which the air outflow (41) is inversely proportion to the fuel flow (25). The fuel flow rate is controlled (65) in proportion to engine load. At high loads, more fuel and less air flow through the port, making more air available to the premixing assemblies (36).

  14. Turbulent heat transfer performance of single stage turbine

    SciTech Connect (OSTI)

    Amano, R.S.; Song, B.

    1999-07-01T23:59:59.000Z

    To increase the efficiency and the power of modern power plant gas turbines, designers are continually trying to raise the maximum turbine inlet temperature. Here, a numerical study based on the Navier-Stokes equations on a three-dimensional turbulent flow in a single stage turbine stator/rotor passage has been conducted and reported in this paper. The full Reynolds-stress closure model (RSM) was used for the computations and the results were also compared with the computations made by using the Launder-Sharma low-Reynolds-number {kappa}-{epsilon} model. The computational results obtained using these models were compared in order to investigate the turbulence effect in the near-wall region. The set of the governing equations in a generalized curvilinear coordinate system was discretized by using the finite volume method with non-staggered grids. The numerical modeling was performed to interact between the stator and rotor blades.

  15. Axially staged combustion system for a gas turbine engine

    DOE Patents [OSTI]

    Bland, Robert J. (Oviedo, FL)

    2009-12-15T23:59:59.000Z

    An axially staged combustion system is provided for a gas turbine engine comprising a main body structure having a plurality of first and second injectors. First structure provides fuel to at least one of the first injectors. The fuel provided to the one first injector is adapted to mix with air and ignite to produce a flame such that the flame associated with the one first injector defines a flame front having an average length when measured from a reference surface of the main body structure. Each of the second injectors comprising a section extending from the reference surface of the main body structure through the flame front and having a length greater than the average length of the flame front. Second structure provides fuel to at least one of the second injectors. The fuel passes through the one second injector and exits the one second injector at a location axially spaced from the flame front.

  16. Instability Control in a Staged Z-pinch

    SciTech Connect (OSTI)

    Frank J. WESSEL

    2011-04-22T23:59:59.000Z

    A \\Staged Z-Pinch� is a fusion-energy concept in which stored-electric energy is first converted into plasma-liner-kinetic energy, and then transferred to a coaxialtarget plasma [H. U. Rahman, F. J. Wessel, and N. Rostoker, Phys. Rev. Lett. 74, p. 714(1996)]. Proper choice of the liner and target materials, and their initial radii and mass densities, leads to dynamic stabilization, current amplification, and shock heating of the target. Simulations suggest that this configuration has merit as a alternative inertial-confinement-fusion concept, and may provide an energy release exceeding thermonuclear break-even, if tested on one of many newer pulsed power systems, for example those located at Sandia National Laboratories.

  17. Staged fluidized-bed coal combustor for boiler retrofit

    SciTech Connect (OSTI)

    Rehmat, A. (Institute of Gas Technology, Chicago, IL (United States)); Dorfman, L.; Shibayama, G. (Fluor-Daniels, Inc., Chicago, IL (United States)); Waibel, R. (Zink (J.) and Co., Tulsa, OK (United States))

    1991-01-01T23:59:59.000Z

    The Advanced Staged Fluidized-Bed Coal Combustion System (ASC) is a novel clean coal technology for either coal-fired repowering of existing boilers or for incremental power generation using combined-cycle gas turbines. This new technology combines staged combustion for gaseous emission control, in-situ sulfur capture, and an ash agglomeration/vitrification process for the agglomeration/vitrification of ash and spent sorbent, thus rendering solid waste environmentally benign. The market for ASC is expected to be for clean coal-fired repowering of generating units up to 250 MW, especially for units where space is limited. The expected tightening of the environmental requirements on leachable solids residue by-products could considerably increase the marketability for ASC. ASC consists of modular low-pressure vessels in which coal is partially combusted and gasified using stacked fluidized-bed processes to produce low-to-medium-Btu, high-temperature gas. This relatively clean fuel gas is used to repower/refuel existing pulverized-coal, natural gas, or oil-fired boilers using bottom firing and reburning techniques. The benefits of ASC coal-fired repowering include the ability to repower boilers without obtaining additional space while meeting the more stringent environmental requirements of the future. Low NO{sub x}, SO{sub x}, and particulate levels are expected while a nonleachable solid residue with trace metal encapsulation is produced. ASC also minimizes boiler modification and life-extension expenditures. Repowered efficiencies can be restored to the initial operating plant efficiency, and the existing boiler capacity can be increased by 10%. Preliminary cost estimates indicate that ASC will have up to a $250/kW capital cost advantage over existing coal-fired repowering options. 4 figs., 4 tabs.

  18. Optimizing Center Performance through Coordinated Data Staging, Scheduling and Recovery

    SciTech Connect (OSTI)

    Zhang, Zhe [ORNL; Wang, Chao [ORNL; Vazhkudai, Sudharshan S [ORNL; Ma, Xiaosong [ORNL; Pike, Gregory [ORNL; Cobb, John W [ORNL; Mueller, Frank [North Carolina State University

    2007-01-01T23:59:59.000Z

    Procurement and optimized utilization of Petascale supercomputers and centers is a renewed national priority. Sustained performance and availability of such large centers is a key technical challenge significantly impacting their usability. As recent research shows, storage systems can be a primary fault source leading to unavailability of even today's supercomputer. Due to data unavailability, jobs are frequently resubmitted resulting in reduced compute center performance as well as in a lack of coordination between I/O activities and job scheduling. In this work, we explore two mechanisms, namely the coordination of job scheduling and data staging/offloading and on-demand job input data reconstruction to address the availability of job input/output data and to improve center-wide performance. Fundamental to both mechanisms is the efficient management of transient data: in the way it is scheduled and recovered. Collectively, from a center standpoint, these techniques optimize resource usage and increase its data/service availability. From a user job standpoint, they reduce job turnaround time and optimize the usage of allocated time. We have implemented our approaches within commonly used supercomputer software tools such as the PBS scheduler and the Lustre parallel file system. We have gathered reconstruction data from a production supercomputer environment using multiple data sources. We conducted simulations based on the measured data recovery performance, the job traces and staged data logs from leadership-class supercomputer centers. Our results indicate that the average waiting time of jobs is reduced. This trend increases significantly for larger jobs and also as data is striped over more I/O nodes.

  19. Cooling supply system for stage 3 bucket of a gas turbine

    DOE Patents [OSTI]

    Eldrid, Sacheverel Quentin (Saratoga Springs, NY); Burns, James Lee (Schenectady, NY); Palmer, Gene David (Clifton Park, NY); Leone, Sal Albert (Scotia, NY); Drlik, Gary Joseph (Fairfield, OH); Gibler, Edward Eugene (Cincinnati, OH)

    2002-01-01T23:59:59.000Z

    In a land based gas turbine including a compressor, a combustor and turbine section including at least three stages, an improvement comprising an inlet into a third stage nozzle from the compressor for feeding cooling air from the compressor to the third stage nozzle; at least one passageway running substantially radially through each airfoil of the third stage nozzle and an associated diaphragm, into an annular space between the rotor and the diaphragm; and passageways communicating between the annular space and individual buckets of the third stage.

  20. Radiotherapy for Stage II and Stage III Breast Cancer Patients With Negative Lymph Nodes After Preoperative Chemotherapy and Mastectomy

    SciTech Connect (OSTI)

    Le Scodan, Romuald, E-mail: lescodan@crh1.org [Department of Radiation Oncology, Institut Curie-Hopital Rene Huguenin, Saint-Cloud (France); Selz, Jessica [Department of Radiation Oncology, Institut Curie-Hopital Rene Huguenin, Saint-Cloud (France); Stevens, Denise [Department of Biostatistics, Institut Curie-Hopital Rene Huguenin, Saint-Cloud (France); Bollet, Marc A.; Lande, Brigitte de la; Daveau, Caroline [Department of Radiation Oncology, Institut Curie-Hopital Rene Huguenin, Saint-Cloud (France); Lerebours, Florence [Department of Medical Oncology, Institut Curie-Hopital Rene Huguenin, Saint-Cloud (France); Labib, Alain [Department of Radiation Oncology, Institut Curie-Hopital Rene Huguenin, Saint-Cloud (France); Bruant, Sarah [Department of Biostatistics, Institut Curie-Hopital Rene Huguenin, Saint-Cloud (France)

    2012-01-01T23:59:59.000Z

    Purpose: To evaluate the effect of postmastectomy radiotherapy (PMRT) in Stage II-III breast cancer patients with negative lymph nodes (pN0) after neoadjuvant chemotherapy (NAC). Patients and Materials: Of 1,054 breast cancer patients treated with NAC at our institution between 1990 and 2004, 134 had pN0 status after NAC and mastectomy. The demographic data, tumor characteristics, metastatic sites, and treatments were prospectively recorded. The effect of PMRT on locoregional recurrence-free survival and overall survival (OS) was evaluated by multivariate analysis, including known prognostic factors. Results: Of the 134 eligible patients, 78 (58.2%) received PMRT and 56 (41.8%) did not. At a median follow-up time of 91.4 months, the 5-year locoregional recurrence-free survival and OS rate was 96.2% and 88.3% with PMRT and 92.5% and 94.3% without PMRT, respectively (p = NS). The corresponding values at 10 years were 96.2% and 77.2% with PMRT and 86.8% and 87.7% without PMRT (p = NS). On multivariate analysis, PMRT had no effect on either locoregional recurrence-free survival (hazard ratio, 0.37; 95% confidence interval, 0.09-1.61; p = .18) or OS (hazard ratio, 2.06; 95% confidence interval, 0.71-6; p = .18). This remained true in the subgroups of patients with clinical Stage II or Stage III disease at diagnosis. A trend was seen toward poorer OS among patients who had not had a pathologic complete in-breast tumor response after NAC (hazard ratio, 6.65; 95% confidence interval, 0.82-54.12; p = .076). Conclusions: The results from the present retrospective study showed no increase in the risk of distant metastasis, locoregional recurrence, or death when PMRT was omitted in breast cancer patients with pN0 status after NAC and mastectomy. Whether the omission of PMRT is acceptable for these patients should be addressed prospectively.

  1. Implications of early stages in the growth of stress corrosion cracking on component reliability

    SciTech Connect (OSTI)

    Jones, R.H.; Simonen, E.P.

    1995-04-01T23:59:59.000Z

    Environment-induced crack growth generally progresses through several stages prior to component failure. Crack initiation, short crack growth, and stage 1 growth are early stages in crack development that are summarized in this paper. The implications of these stages on component reliability, derive from the extended time that the crack exists in the early stages because crack velocity is slow. The duration of the early stages provides a greater opportunity for corrective action if cracks can be detected. Several important factors about the value of understanding short crack behavior include: (1) life prediction requires a knowledge of the total life cycle of the crack including the early stages, (2) greater reliability is possible if the transition between short and long crack behavior is known component life after this transition is short and (3) remedial actions are more effective for short than long cracks.

  2. Thermionic converters for an Integrated Solar Upper Stage (ISUS)

    SciTech Connect (OSTI)

    Anderson, W.G.; Horner-Richardson, K. [Thermacore, Inc., Lancaster, PA (United States)

    1996-12-31T23:59:59.000Z

    The Integrated Solar Upper Stage (ISUS) is a solar bimodal system which combines thermal propulsion and electric power generation in a single integrated system. A thermionic converter was designed and fabricated for the ISUS system. The ISUS thermionic energy converters differ from previous designs, due to the significant changes in operating temperature prior to and during an eclipse, with the emitter temperature increasing from 1,900 K to 2,200 K, and then back again. A complete thermal and electrical model was developed for a planar diode to determine optimum operating dimensions and parameters. The model includes an overall energy balance for the diode, and changes the interelectrode gap spacing due to thermal expansion of the parts as the emitter and/or collector temperatures change. Cesium pressure can be chosen from an external liquid reservoir, an integral reservoir using cesium intercalated into graphite attached to the collector heat pipe, or optimum cesium pressure. With optimum cesium pressure, the maximum efficiency increases from 14% to 16% as the emitter temperature increases from 1,900 K to 2,200 K. The improvement in efficiency is only 2% as the emitter temperature is increased. Optimum efficiency requires an external, actively controlled liquid reservoir.

  3. Two-stage crystallization of charged colloids at low supersaturations

    E-Print Network [OSTI]

    Kai Kratzer; Axel Arnold

    2014-10-31T23:59:59.000Z

    We report simulations on the homogeneous liquid-fcc nucleation of charged colloids for both low and high contact energy values. As a precursor for crystal formation, we observe increased local order at the position where the crystal will form, but no correlations with the local density. Thus, the nucleation is driven by order fluctuations rather than density fluctuations. Our results also show that the transition involves two stages in both cases, first a transition liquid-bcc, followed by a bcc-hcp/fcc transition. Both transitions have to overcome free energy barriers, so that a spherical bcc-like cluster is formed first, in which the final fcc-like structure is nucleated mainly at the surface of the crystallite. This means that the bcc-fcc phase transition is a heterogeneous nucleation, even though we start from a homogeneous bulk liquid. The height of the bcc-hcp/fcc free energy barrier strongly depends on the contact energies of the colloids. For low contact energy this barrier is low, so that the bcc-hcp/fcc transition happens spontaneously. For the higher contact energy, the second barrier is too high to be crossed spontaneously by the colloidal system. However, it was possible to ratchet the system over the second barrier and to transform the bcc nuclei into the stable hcp/fcc phase. The transitions are dominated by the first liquid-bcc transition and can be described by Classical Nucleation Theory using an effective surface tension.

  4. Films of bacteria at interfaces: three stages of behaviour

    E-Print Network [OSTI]

    Liana Vaccari; Daniel Allan; Nima Sharifi-Mood; Aayush Singh; Robert Leheny; Kathleen Stebe

    2015-03-25T23:59:59.000Z

    Bacterial attachment to a fluid interface can lead to the formation of a film with physicochemical properties that evolve with time. We study the time evolution of interface (micro)mechanics for interfaces between oil and bacterial suspensions by following the motion of colloidal probes trapped by capillarity to determine the interface microrheology. Initially, active bacteria at and near the interface drive superdiffusive motion of the colloidal probes. Over timescales of minutes, the bacteria form a viscoelastic film which we discuss as a quasi-two-dimensional, active, glassy system. To study late stage mechanics of the film, we use pendant drop elastometry. The films, grown over tens of hours on oil drops, are expanded and compressed by changing the drop volume. For small strains, by modeling the films as 2D Hookean solids, we estimate the film elastic moduli, finding values similar to those reported in the literature for the bacteria themselves. For large strains, the films are highly hysteretic. Finally, from wrinkles formed on highly compressed drops, we estimate film bending energies. The dramatic restructuring of the interface by such robust films has broad implications, e.g. in the study of active colloids, in understanding the community dynamics of bacteria, and in applied settings including bioremediation.

  5. GAISUS-1 thermionic converter for the integrated solar upper stage

    SciTech Connect (OSTI)

    Begg, L.L.; Heffernan, T.F.; Horner, M.H. [General Atomics, San Diego, CA (United States)

    1997-12-31T23:59:59.000Z

    The Integrated Solar Upper Stage (ISUS) system is a compact orbital transfer vehicle which generates thrust to boost payloads from LEO to higher orbits. It does this by collecting and concentrating solar flux into a sensible thermal storage, graphite receiver which is used to heat hydrogen propellant to temperatures of up to 2500 K. The ISUS receiver also radiates heat into an array of thermionic converters which produce electrical power. The GAISUS-1 thermionic converter is a first generation planar converter designed to produce electrical power when coupled with the ISUS receiver. GAISUS-1 will deliver over 31 W{sub e} at 1900 K. A wrought Re hotshoe accepts radiant heat from the receiver. The back side of the hotshoe forms the emitting surface of the converter. Special attention was paid to optimize the electrical and thermal losses experienced through the sleeve. Triple and single sleeve geometries were thermally modeled and evaluated, resulting in the selection of a single sleeve design. A high temperature metal/ceramic seal isolates the emitter sleeve from the collector. A Nb collector is used and is an integral part of a Nb/Na heat pipe. The heat pipe transports reject heat from the collector surface to a thermal radiator (condenser) portion of the heat pipe. The converter utilizes an integral graphite Cs reservoir. This type of reservoir automatically produces a rise in Cs pressure in response to a rise in emitter/collector temperatures. This Cs pressure feedback mechanism insures adequate Cs coverage of the emitter over a broad range of operating conditions (temperatures).

  6. Lyman-alpha Emitters During the Early Stages of Reionization

    E-Print Network [OSTI]

    Andrei Mesinger; Steven Furlanetto

    2008-01-30T23:59:59.000Z

    We investigate the potential of exploiting Lya Emitters (LAEs) to constrain the volume-weighted mean neutral hydrogen fraction of the IGM, x_H, at high redshifts (specifically z~9). We use "semi-numerical'' simulations to efficiently generate density, velocity, and halo fields at z=9 in a 250 Mpc box, resolving halos with masses M>2.2e8 solar masses. We construct ionization fields corresponding to various values of x_H. With these, we generate LAE luminosity functions and "counts-in-cell'' statistics. As in previous studies, we find that LAEs begin to disappear rapidly when x_H > 0.5. Constraining x_H(z=9) with luminosity functions is difficult due to the many uncertainties inherent in the host halo mass Lya luminosity mapping. However, using a very conservative mapping, we show that the number densities derived using the six z~9 LAEs recently discovered by Stark et al. (2007) imply x_H densities, if genuine, require substantial star formation in halos with M solar masses, making them unique among the current sample of observed high-z objects. Furthermore, reionization increases the apparent clustering of the observed LAEs. We show that a ``counts-in-cell'' statistic is a powerful probe of this effect, especially in the early stages of reionization. Specifically, we show that a field of view (typical of upcoming IR instruments) containing LAEs has >10% higher probability of containing more than one LAE in a x_H>0.5 universe than a x_H=0 universe with the same overall number density. With this statistic, a fully ionized universe can be robustly distinguished from one with x_H > 0.5 using a survey containing only ~ 20--100 galaxies.

  7. Synchrotron radiation and beam tube vacuum in a Very Large Hadron Collider; Stage 1 VLHC

    E-Print Network [OSTI]

    Pivi, M.; Turner, W.C.

    2001-01-01T23:59:59.000Z

    Synchrotron Radiation and Beam Tube Vacuum in a Very Large94720 Abstract Synchrotron radiation induced photodesorptionvacuum. The synchrotron radiation power in the Stage 1 VLHC,

  8. Government Leasing Policy and the Multi-Stage Investment Timing Game in Offshore Petroleum Production

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia; Leighty, Wayne

    2007-01-01T23:59:59.000Z

    multi-stage investment timing decisions in oil explorationthe investment and production timing decisions in oil supplyoil production decisions rather than exploration and development investments,

  9. Solving multi-stage stochastic mixed integer linear programs by the ...

    E-Print Network [OSTI]

    2012-01-26T23:59:59.000Z

    In this article, we describe the di cult points in multi-stage SMILP, and an ap- ..... Following (18) (19), the approximation quality decreases as the backward ...

  10. CORN DEVELOPMENT AND KEY GROWTH STAGES Brent Bean and Carl Patrick, Extension Agronomist and Entomologist

    E-Print Network [OSTI]

    Mukhtar, Saqib

    CORN DEVELOPMENT AND KEY GROWTH STAGES Brent Bean and Carl Patrick, Extension Agronomist to have the soil profile full of water prior to tas

  11. Government Leasing Policy and the Multi-Stage Investment Timing Game in Offshore Petroleum Production

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia; Leighty, Wayne

    2007-01-01T23:59:59.000Z

    Prorationing of crude oil production. The American Economicreal options theory. Oil production is a multi-stage processthe theory to the oil production process that account for

  12. Two-Stage Stochastic Programming Involving CVaR with an ...

    E-Print Network [OSTI]

    Birbil

    2010-04-07T23:59:59.000Z

    Page 1 ... framework of two-stage stochastic program- ming is a fairly recent research topic (Ahmed, 2004; 2006; Schultz and Tiedemann, 2006; Fábián, 2008

  13. Performance evaluation of two-stage fuel cycle from SFR to PWR

    SciTech Connect (OSTI)

    Fei, T.; Hoffman, E.A.; Kim, T.K.; Taiwo, T.A. [Nuclear Engineering Division Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL (United States)

    2013-07-01T23:59:59.000Z

    One potential fuel cycle option being considered is a two-stage fuel cycle system involving the continuous recycle of transuranics in a fast reactor and the use of bred plutonium in a thermal reactor. The first stage is a Sodium-cooled Fast Reactor (SFR) fuel cycle with metallic U-TRU-Zr fuel. The SFRs need to have a breeding ratio greater than 1.0 in order to produce fissile material for use in the second stage. The second stage is a PWR fuel cycle with uranium and plutonium mixed oxide fuel based on the design and performance of the current state-of-the-art commercial PWRs with an average discharge burnup of 50 MWd/kgHM. This paper evaluates the possibility of this fuel cycle option and discusses its fuel cycle performance characteristics. The study focuses on an equilibrium stage of the fuel cycle. Results indicate that, in order to avoid a positive coolant void reactivity feedback in the stage-2 PWR, the reactor requires high quality of plutonium from the first stage and minor actinides in the discharge fuel of the PWR needs to be separated and sent back to the stage-1 SFR. The electricity-sharing ratio between the 2 stages is 87.0% (SFR) to 13.0% (PWR) for a TRU inventory ratio (the mass of TRU in the discharge fuel divided by the mass of TRU in the fresh fuel) of 1.06. A sensitivity study indicated that by increasing the TRU inventory ratio to 1.13, The electricity generation fraction of stage-2 PWR is increased to 28.9%. The two-stage fuel cycle system considered in this study was found to provide a high uranium utilization (>80%). (authors)

  14. Generation of high peak power pulse using 2 stage erbium-doped fiber amplifier

    E-Print Network [OSTI]

    Lee, Kyung-Woo

    2000-01-01T23:59:59.000Z

    This thesis presents the results obtained from generation of high repetition rate, high power output pulse using an erbium-doped fiber amplifier (EDFA). Two stage amplification was employed. The first stage setup used 980nm pump laser to pump erbium...

  15. MANUFACTURING COMPLEXITY EVALUATION AT THE DESIGN STAGE FOR BOTH MACHINING AND LAYERED MANUFACTURING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and an additive process. Manufacturability indexes are calculated at the tool design stage, these indexes provide an accurate view of which areas of the tool will advantageously be machined or manufactured by an additiveMANUFACTURING COMPLEXITY EVALUATION AT THE DESIGN STAGE FOR BOTH MACHINING AND LAYERED

  16. Design Considerations, Installation and Operation of the Two-Stage Parallel Flow Absorption Chiller

    E-Print Network [OSTI]

    Hufford, P. E.

    1984-01-01T23:59:59.000Z

    combustion engines, or process flow to provide the elergy to the first stage generator. There are a nmber of installations currently opera- ting in South,zrn California where the exhaust from gas turbines is being taken directly into the two- stage...

  17. Method and apparatus for advanced staged combustion utilizing forced internal recirculation

    DOE Patents [OSTI]

    Rabovitser, Iosif K.; Knight, Richard A.; Cygan, David F.; Nester, Serguei; Abbasi, Hamid A.

    2003-12-16T23:59:59.000Z

    A method and apparatus for combustion of a fuel in which a first-stage fuel and a first-stage oxidant are introduced into a combustion chamber and ignited, forming a primary combustion zone. At least about 5% of the total heat output produced by combustion of the first-stage fuel and the first-stage oxidant is removed from the primary combustion zone, forming cooled first-stage combustion products. A portion of the cooled first-stage combustion products from a downstream region of the primary combustion zone is recirculated to an upstream region of primary combustion zone. A second-stage fuel is introduced into the combustion chamber downstream of the primary combustion zone and ignited, forming a secondary combustion zone. At least about 5% of the heat from the secondary combustion zone is removed. In accordance with one embodiment, a third-stage oxidant is introduced into the combustion chamber downstream of the secondary combustion zone, forming a tertiary combustion zone.

  18. Hydrogen production from cellulose in a two-stage process combining fermentation and electrohydrogenesis

    E-Print Network [OSTI]

    primarily of: acetic, lactic, succinic, and formic acids and ethanol. An additional 800 Æ 290 mL H2/gHydrogen production from cellulose in a two-stage process combining fermentation Electrolysis cell Fermentation Lignocellulose a b s t r a c t A two-stage dark-fermentation

  19. Follow-up Report on Possible Contamination of the COS Grating Test Facility from Klinger Stages

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Follow-up Report on Possible Contamination of the COS Grating Test Facility from Klinger Stages Contamination of the Approved: COS Grating Test Facility from Klinger Stages Size Code Indent No. Document No Astronomy Initial Release Follow-up Report on Possible Contamination of the COS Grating Test Facility from

  20. DECENTRALIZED INVENTORY CONTROL IN A TWO-STAGE CAPACITATED SUPPLY CHAIN

    E-Print Network [OSTI]

    Karaesmen, Fikri

    DECENTRALIZED INVENTORY CONTROL IN A TWO-STAGE CAPACITATED SUPPLY CHAIN Zied Jema¨i and Fikri@ku.edu.tr Revised Version: July 2005 #12;Decentralized Inventory Control in a Two-Stage Capacitated Supply Chain base stock policies for inventory replenishment. All unsatisfied demand is backlogged and the customer

  1. Five Stages of the Alaskan Arctic Cold Season with Ecosystem Implications

    E-Print Network [OSTI]

    Sturm, Matthew

    1 Five Stages of the Alaskan Arctic Cold Season with Ecosystem Implications Peter Q. Olsson1 ecosystem processes. During the two autumnal stages (Early Snow and Early Cold) soils remain warm, unfrozen with the least amount of biological activity and have the least impact on the ecosystem. However, Early Snow

  2. From "Stages" of Business Growth to a Dynamic States Model of Entrepreneurial Growth and Change

    E-Print Network [OSTI]

    Mottram, Nigel

    From "Stages" of Business Growth to a Dynamic States Model of Entrepreneurial Growth and Change and Gumpert, 1985), and virtually all economic models of business creation follow firm birth with firm growth models of new business growth assume a limited number of distinct stages through #12;3 which businesses

  3. Modeling and Analysis of Stage Machinery Control Systems by Timed Colored Petri Nets

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Modeling and Analysis of Stage Machinery Control Systems by Timed Colored Petri Nets Hehua Zhang, is critical to the correctness of a system. Petri nets (PN) have been proven to be a powerful modeling tool Nets (TCPN) are proposed to model and analyze a PLC-based stage machinery control system1

  4. An exploration of the stages of change model in a group treatment program for male batterers

    E-Print Network [OSTI]

    Wells, Robert Davis

    2005-02-17T23:59:59.000Z

    in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2004 Major Subject: Counseling Psychology AN EXPLORATION OF THE STAGES OF CHANGE MODEL IN A GROUP TREATMENT PROGRAM...) __________________________ Michael R. Benz (Head of Department) December 2004 Major Subject: Counseling Psychology iii ABSTRACT An Exploration of the Stages of Change Model in a Group Treatment Program for Male Batterers. (December 2004...

  5. Romisch, W.; Schultz, R. Decomposition of a Multi-Stage Stochastic Program for Power Dispatch

    E-Print Network [OSTI]

    Römisch, Werner

    -stage stochastic program for nding a cost-optimal dispatch of electric power in a power system comprising thermal for the power system and a proper modelling of the stochastic power demand. The present paper widens the scope develop a multi-stage stochastic program for the optimal dispatch of electric power under uncertain demand

  6. Sorghum Development and Key Growth Stages Brent Bean and Carl Patrick, Extension Agronomist and Entomologist

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Sorghum Development and Key Growth Stages Brent Bean and Carl Patrick, Extension Agronomist the length of the peduncle. ! Maximum water use occurs at this stage. Crop will respond vary favorably the fingers. ! Three-fourths of grain dry weight has accumulated. ! Water stress during grain fill may cause

  7. Science College and Programme Office 2 Staff with responsibility for Stage 1 students 4

    E-Print Network [OSTI]

    Contents Science College and Programme Office 2 Map 3 Staff with responsibility for Stage 1 Science Undergraduate Degree Programmes 12 Module Level Restrictions by Stage 13 Information on Module Grades, Late/Absent from Exam, Degree Classification 14 Repeats and Resits in Undergraduate Science

  8. Multi-stage linear slot virtual impactor for concentration of bioaerosols

    E-Print Network [OSTI]

    Conerly, Shawn Charles

    2006-08-16T23:59:59.000Z

    in parallel for the first stage with the designed dimensions of 87 mm (3.4Â?) for the throat length, 0.305 mm (.012Â?) for the accelerator throat width, and 0.457 mm (.018Â?) for the receiver throat width. The second stage contained a single unit...

  9. Sample Size Formulae for Two-Stage Randomized Trials with Survival Outcomes

    E-Print Network [OSTI]

    Murphy, Susan A.

    ), for an example in the treatment of alcohol dependence, in continuing care for drug abuse, and in criminology.S.A. Abstract Two-stage randomized trials are growing in importance in developing adaptive treatment strategies, i.e., treatment policies or dynamic treatment regimes. Usu- ally the first stage involves

  10. Onion ipmPIPE -Diagnostic Pocket Series Bulb Growth Stages of Onion (Allium cepa L.)

    E-Print Network [OSTI]

    Pappu, Hanu R.

    Onion ipmPIPE - Diagnostic Pocket Series Bulb Growth Stages of Onion (Allium cepa L.) Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 Fig 6 Fig 7 Fig 8 Allium Type: Fresh Market and Storage Onion Both pre- and post-bulb planting (seeds, transplants, sets). Pre-Bulb Growth Stages 1 ­ radical and flag leaf emergence (10-30 days

  11. Catalytic two-stage coal liquefaction process having improved nitrogen removal

    DOE Patents [OSTI]

    Comolli, Alfred G. (Yardley, PA)

    1991-01-01T23:59:59.000Z

    A process for catalytic multi-stage hydrogenation and liquefaction of coal to produce high yields of low-boiling hydrocarbon liquids containing low concentrations of nitogen compounds. First stage catalytic reaction conditions are 700.degree.-800.degree. F. temperature, 1500-3500 psig hydrogen partial pressure, with the space velocity maintained in a critical range of 10-40 lb coal/hr ft.sup.3 catalyst settled volume. The first stage catalyst has 0.3-1.2 cc/gm total pore volume with at least 25% of the pore volume in pores having diameters of 200-2000 Angstroms. Second stage reaction conditions are 760.degree.-870.degree. F. temperature with space velocity exceeding that in the first stage reactor, so as to achieve increased hydrogenation yield of low-boiling hydrocarbon liquid products having at least 75% removal of nitrogen compounds from the coal-derived liquid products.

  12. High Resolution RANS NLH Study of Stage 67 Tip Injection Physics

    SciTech Connect (OSTI)

    Matheson, Michael A [ORNL

    2014-01-01T23:59:59.000Z

    Numerical prediction of the Stage 67 transonic fan stage employing wall jet tip injection flow control and study of the physical mechanisms leading to stall suppression and stability enhancement afforded by endwall recirculation/injection is the focus of this paper. Reynolds averaged Navier-Stokes computations were used to perform detailed analysis of the Stage 67 configuration experimentally tested at NASA s Glenn Research Center in 2004. Time varying prediction of the stage plus recirculation and injection flowpath were performed utilizing the Nonlinear Harmonic approach. Significantly higher grid resolution per passage was achieved than what has been generally employed in prior reported numerical studies of spike stall phenomena in transonic compressors. This paper focuses on characterizing the physics of spike stall embryonic stage phenomena and the impact of tip injection, resulting in experimentally and numerically demonstrated stall suppression

  13. Reconciling Scratch Space Consumption, Exposure, and Volatility to Achieve Timely Staging of Job Input Data

    SciTech Connect (OSTI)

    Monti, Henri [Virginia Polytechnic Institute and State University (Virginia Tech); Butt, Ali R [Virginia Polytechnic Institute and State University (Virginia Tech); Vazhkudai, Sudharshan S [ORNL

    2010-04-01T23:59:59.000Z

    Innovative scientific applications and emerging dense data sources are creating a data deluge for high-end computing systems. Processing such large input data typically involves copying (or staging) onto the supercomputer's specialized high-speed storage, scratch space, for sustained high I/O throughput. The current practice of conservatively staging data as early as possible makes the data vulnerable to storage failures, which may entail re-staging and consequently reduced job throughput. To address this, we present a timely staging framework that uses a combination of job startup time predictions, user-specified intermediate nodes, and decentralized data delivery to coincide input data staging with job start-up. By delaying staging to when it is necessary, the exposure to failures and its effects can be reduced. Evaluation using both PlanetLab and simulations based on three years of Jaguar (No. 1 in Top500) job logs show as much as 85.9% reduction in staging times compared to direct transfers, 75.2% reduction in wait time on scratch, and 2.4% reduction in usage/hour.

  14. A High-Precision Instrument for Mapping of Rotational Errors in Rotary Stages

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

    Xu W.; Lauer,K.; Chu,Y.; Nazaretski,E.

    2014-10-02T23:59:59.000Z

    A rotational stage is a key component of every X-ray instrument capable of providing tomographic or diffraction measurements. To perform accurate three-dimensional reconstructions, runout errors due to imperfect rotation (e.g. circle of confusion) must be quantified and corrected. A dedicated instrument capable of full characterization and circle of confusion mapping in rotary stages down to the sub-10 nm level has been developed. A high-stability design, with an array of five capacitive sensors, allows simultaneous measurements of wobble, radial and axial displacements. The developed instrument has been used for characterization of two mechanical stages which are part of an X-ray microscope.

  15. Towering Cumulus Stage Mature Stage Dissipating Stage

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003Tool ofTopo II:7.1 7.0Coupled Earth

  16. A Review of "Staging Islam in England: Drama and Culture, 1640-1685" by Matthew Birchwood

    E-Print Network [OSTI]

    Garcia, Humberto

    2009-01-01T23:59:59.000Z

    reviews 145 Matthew Birchwood. Staging Islam in England: Drama and Culture, 1640- 1685. Studies in Renaissance Literature 21. Cambridge: D.S. Brewer, 2007. viii + 200 pp. + 4 illus. $95.00. Review by humberto garcia, vanderbilt university...

  17. Blade tip clearance effect on the performance and flow field of a three stage axial turbine

    E-Print Network [OSTI]

    Abdel-Fattah, Sharef Aly

    2003-01-01T23:59:59.000Z

    The effect of a 1.5 % blade tip clearance on a rotating three stage turbine under different operating points was investigated using radially and circumferentially traversed five hole pressure probes. The probes were used to obtain flow field total...

  18. Performance Analysis of an Annular Diffuser Under the Influence of a Gas Turbine Stage Exit Flow

    E-Print Network [OSTI]

    Blanco, Rafael Rodriguez

    2013-12-31T23:59:59.000Z

    In this investigation the performance of a gas turbine exhaust diffuser subject to the outlet flow conditions of a turbine stage is evaluated. Towards that goal, a fully three-dimensional computational analysis has been performed where several...

  19. Ultrahigh resolution optical coherence tomography for the detection of early stage neoplastic pathologies

    E-Print Network [OSTI]

    Hsiung, Pei-Lin, 1975-

    2005-01-01T23:59:59.000Z

    Identification of changes associated with early stage disease remains a critical objective of clinical detection and treatment. Effective screening and detection is important for improving outcome because advanced disease, ...

  20. Forced response of a centrifugal compressor stage due to the impeller-diffuser interaction

    E-Print Network [OSTI]

    Walton, Edward James

    2014-01-01T23:59:59.000Z

    The unsteady pressure field experienced by a centrifugal compressor stage can be dominated by of the impeller-diffuser interaction. The energy of the unsteady field, under certain aerodynamic and structural conditions, is ...

  1. ajcc stage i-ii: Topics by E-print Network

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

    This thesis focuses on the design of a public theatre for the entire city of Boston, a "city stage." The intention is to explore through design the boundaries of an architectural...

  2. Film Cooling, Heat Transfer and Aerodynamic Measurements in a Three Stage Research Gas Turbine 

    E-Print Network [OSTI]

    Suryanarayanan, Arun

    2010-07-14T23:59:59.000Z

    The existing 3-stage turbine research facility at the Turbomachinery Performance and Flow Research Laboratory (TPFL), Texas A and M University, is re-designed and newly installed to enable coolant gas injection on the first ...

  3. Effects of rotor tip clearance on an embedded compressor stage performance

    E-Print Network [OSTI]

    Sakulkaew, Sitanun

    2012-01-01T23:59:59.000Z

    Compressor efficiency variation with rotor tip gap is assessed using numerical simulations on an embedded stage representative of that in a large industrial gas turbine with Reynolds number being approximately 2 x 106 to ...

  4. Public private equity : an evaluation of public early stage risk capital initiatives in Norway

    E-Print Network [OSTI]

    Oeby, Simen Berger

    2014-01-01T23:59:59.000Z

    Access to finance limits the ability to grow for many early stage ventures. To mitigate this limitation, the Norwegian State has initiated seed funds partly financed by public funds. The funds carried out many investments ...

  5. Response of Peanuts to Irrigation Management at Different Crop Growth Stages

    E-Print Network [OSTI]

    Howell, T. A.; McFarland, M. J.; Reddell, D. L.; Brown, K. W.; Newton, R. J.; Dahmen, P.

    for peanuts at different crop growth stages for the Spanish and the Florunner varieties. The yield of the two varieties was evaluated under seven different irrigation treatments including a "no stress" check treatment and a dryland treatment. Each treatment...

  6. Complexity and Algorithms for Two-Stage Flexible Flowshop Scheduling with Availability Constraints

    E-Print Network [OSTI]

    Xie, Jinxing

    Complexity and Algorithms for Two-Stage Flexible Flowshop Scheduling with Availability Constraints problem with availability constraints. We discuss the complexity and the approximability of the problem cases of the problem. Keywords: Scheduling; Flexible flowshop; Availability constraints; Approximability

  7. Identification and compensation of friction for a dual stage positioning system

    E-Print Network [OSTI]

    Thimmalapura, Satish Voddina

    2005-11-01T23:59:59.000Z

    and velocity as compared to conventional friction models which are dependent on the direction of motion. Static and Coulomb friction were modelled as functions of velocity and position. This model was able to predict the behavior of the coarse stage...

  8. Two-Stage Plasma-Catalysis for Diesel NOx Emission Control. ...

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

    producing nitrogen. Citation: Hoard J, and RG Tonkyn.2003."Two-Stage Plasma-Catalysis for Diesel NOx Emission Control."Journal of Advanced Oxidation Technologies 6(2):158-165....

  9. Crucial stages of protein folding through a solvable model: Predicting target sites

    E-Print Network [OSTI]

    Cecconi, Fabio

    Crucial stages of protein folding through a solvable model: Predicting target sites for enzyme. Keywords: Protein-folding modeling; prediction of key folding sites; HIV-1 protease; drug resistance One

  10. Design study of the bending sections between harmonic cascade FEL stages

    E-Print Network [OSTI]

    Wan, Weishi; Corlett, John; Fawley, William; Zholents, A.

    2004-01-01T23:59:59.000Z

    A XUV/Soft X-Ray Harmonic- Cascade FEL for the Proposed LBNLin a Cascaded Harmonic FEL CBP Tech Note-281, Februarybetween Harmonic Cascade FEL Stages W. Wan, J. Corlett, W.

  11. Design of a New Decoupled XYZ Compliant Parallel Micropositioning Stage with Compact Structure

    E-Print Network [OSTI]

    Li, Yangmin

    , University of Macau, Av. Padre Tom´as Pereira, Taipa, Macao SAR, China qsxu@umac.mo, ymli@umac.mo Delta can not be realized, a decoupled XYZ stage with proper calibrations is preferred. Moreover

  12. Novel Design of a Totally Decoupled Flexure-Based XYZ Parallel Micropositioning Stage

    E-Print Network [OSTI]

    Li, Yangmin

    of Macau, Av. Padre Tom´as Pereira, Taipa, Macao SAR, P.R.China, Corresponding author: ymli with proper calibrations is preferred. Moreover, a decoupled stage will benefit the controller design process

  13. On the Power and Limitations of Affine Policies in Two-Stage Adaptive Optimization

    E-Print Network [OSTI]

    Bertsimas, Dimitris J.

    We consider a two-stage adaptive linear optimization problem under right hand side uncertainty with a min–max objective and give a sharp characterization of the power and limitations of affine policies (where the second ...

  14. Second order accurate variance estimation in poststratified two-stage sampling

    E-Print Network [OSTI]

    Kim, Kyong Ryun

    2007-09-17T23:59:59.000Z

    We proposed new variance estimators for the poststratified estimator of the population total in two-stage sampling. The linearization or Taylor series variance estimator and the jackknife linearization variance estimator are popular...

  15. Improvements to building energy usage modeling during early design stages and retrofits

    E-Print Network [OSTI]

    Mandelbaum, Andrew (Andrew Joseph)

    2014-01-01T23:59:59.000Z

    A variety of improvements to the MIT Design Advisor, a whole-building energy usage modeling tool intended for use during early design stages, are investigated. These include changes to the thermal mass temperature distribution ...

  16. The NanoMax-TSTM three-axis stage offers an unmatched combination of

    E-Print Network [OSTI]

    Kik, Pieter

    555 Spacer Block to Raise Optical- Axis Height to 125-mm 17 AMA 554 ©2002 MELLES GRIOT MCE 1042 03 holes threaded M2 on 20 centers dimensions: millimeters 17 MAX 302 3-axis stage MELLES GRIOT

  17. Designing a low cost XY stage for abrasive water jet cutting

    E-Print Network [OSTI]

    Abu Ibrahim, Fadi, 1980-

    2004-01-01T23:59:59.000Z

    This thesis guides the reader through the design of an inexpensive XY stage for abrasive water jet cutting machine starting with a set of functional requirements and ending with a product. Abrasive water jet cutting allows ...

  18. The Impact of Product Contamination in a Multi-Stage Food Supply Chain

    E-Print Network [OSTI]

    Chebolu-Subramanian, Vijaya

    2012-07-16T23:59:59.000Z

    THE IMPACT OF PRODUCT CONTAMINATION IN A MULTI- STAGE FOOD SUPPLY CHAIN A Dissertation by VIJAYA B. CHEBOLU-SUBRAMANIAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...-Subramanian THE IMPACT OF PRODUCT CONTAMINATION IN A MULTI- STAGE FOOD SUPPLY CHAIN A Dissertation by VIJAYA B. CHEBOLU-SUBRAMANIAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree...

  19. A review of "Women on Stage in Stuart Drama" by Sophie Tomlinson

    E-Print Network [OSTI]

    Thompson, Ayanna

    2007-01-01T23:59:59.000Z

    links Age Rectified to important recent scholarship on motherhood and old age in early modern England. Scholars interested in either of these topics must read this book. Sophie Tomlinson. Women on Stage in Stuart Drama. Cambridge: Cambridge University...- ration drama or treat it like some bizarre anomaly that occurred ex nihilo. Sophie Tomlinson?s new book Women on Stage in Stuart Drama, however, offers an important intervention by demonstrating ?the literary and theatrical continuities? between early...

  20. Effects of vaned diffuser pressure recovery on centrifugal compressor stage performance

    E-Print Network [OSTI]

    Eason, Robyn Monique

    1985-01-01T23:59:59.000Z

    Orientation of Channel Taps and Sealed Holes ? ? ? ? ? 28 11 Control Rxan 12 Inlet and Exit Velocity Triangles 13 Impeller Meridional Profile- 14 Prescribed Flow Functians 30 35 36 15 Vened Diffuser Geanetry 41 16 Leading Edge Circumf erentia1 Static... of vened diffuser static pressure recovery on centrifugal ccxn- pressor stage performance are presented. A single-stage radial canpres- sor experiencing actual operating conditions in a Ford regenerative gas turbine engine was utilized...

  1. The Multi-Stage Investment Timing Game in Offshore Petroleum Production: Preliminary results from an econometric model

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    2007-01-01T23:59:59.000Z

    irreversible investment using North Sea oil data. Economicfor each of the two investment stages in oil production. InOil production is a multi-stage process involving sequential investment

  2. Entering a New Stage of Learning from the U.S. Fuel Cell Electric Vehicle Demonstration Project (Presentation)

    SciTech Connect (OSTI)

    Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Garbak, J.

    2010-11-08T23:59:59.000Z

    This presentation summarizes Entering a New Stage of Learning from the U.S. Fuel Cell Electric Vehicle Demonstration Project.

  3. Wellcome Trust SUBMISSION OF EVIDENCE Wellcome Trust response to Department for Education: Reforming Key Stage 4 qualifications

    E-Print Network [OSTI]

    Rambaut, Andrew

    : Reforming Key Stage 4 qualifications December 2012 Department for Education: Reforming Key Stage 4 science skills. 2. We are pleased to have the opportunity to respond to the consultation on reforms to Key consultations on the reform to curriculum and assessment at various stages of schooling. There is an opportunity

  4. Four stage, fluidized bed gasification process minimizes NO{sub x}

    SciTech Connect (OSTI)

    Lewis, F.M.; Haug, R.T.

    1999-07-01T23:59:59.000Z

    In 1981, after a long and thorough study of alternative methods of sewage sludge (biosolids) disposal, the City of Los Angeles (CLA) embarked on a pilot test program to incinerate dried sewage sludge from its Hyperion Wastewater Treatment Plant. This dried sludge is typically 47% ash, 53% combustible, and has an average higher heating value (HHV), moisture, ash-free (MAF) of 10,675 Btu/Lbm. The dried sludge is called sludge derived fuel (SDF). Approximately 8% of the MAF fraction of SDF is fuel-bound nitrogen. When SDF, with its extremely high fuel-bound nitrogen, was combusted in conventional multiple hearth and fluidized bed pilot plant furnaces, NO{sub x} emissions were extremely high ({gt}1,000 ppm). Faced with this dilemma, the CLA initiated an R and D program to reduce NO{sub x}. The pilot tests with a sub-stoichiometric fluid bed and an excess air afterburner (two-stages) reduced NO{sub x} to 400--600 ppm. With one intermediate stage added (three-stage), NO{sub x} was reduced to 130--150 ppm. However, when the following four-stage process was developed and tested, NO{sub x} was reduced to 50--75 ppm. Stage 1: Sub-stoichiometric fluidized bed operating at a nominal 30% stoichiometric air (SA). Stage 2:Sub-stoichiometric zone operating at a nominal 80% SA. Stage 3: Stoichiometric zone operating at a nominal 100% SA. Stage 4: Excess air zone (Afterburner) operating at a nominal 135% SA (35% excess air). After pilot testing was complete and design parameters established, three full-size, fluid bed gasifiers (two operational--one standby) were designed, constructed and operated until 1996. This paper describes the design, operation, and emission testing of these four-stage fluid bed gasifiers with special emphasis on the problems of (a) pneumatic feeding of SDF powder into the pressurized bed and (b) baghouse fabrics (expanded PTEE membrane on PTFE scrim). Final emission test results for NO{sub x} and other criteria pollutants are also presented.

  5. Catalytic two-stage coal hydrogenation process using extinction recycle of heavy liquid fraction

    DOE Patents [OSTI]

    MacArthur, J.B.; Comolli, A.G.; McLean, J.B.

    1989-10-17T23:59:59.000Z

    A process is described for catalytic two-stage hydrogenation and liquefaction of coal with selective extinction recycle of all heavy liquid fractions boiling above a distillation cut point of about 600--750 F to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal feed is slurried with a process-derived liquid solvent normally boiling above about 650 F and fed into a first stage catalytic reaction zone operated at conditions which promote controlled rate liquefaction of the coal, while simultaneously hydrogenating the hydrocarbon recycle oils. The first stage reactor is maintained at 710--800 F temperature, 1,000--4,000 psig hydrogen partial pressure, and 10-90 lb/hr per ft[sup 3] catalyst space velocity. Partially hydrogenated material withdrawn from the first stage reaction zone is passed directly to the second stage catalytic reaction zone maintained at 760--860 F temperature for further hydrogenation and hydroconversion reactions. A 600--750 F[sup +] fraction containing 0--20 W % unreacted coal and ash solids is recycled to the coal slurrying step. If desired, the cut point lower boiling fraction can be further catalytically hydrotreated. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, to provide significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of hydrocarbon gases, and no net production of undesirable heavy oils and residuum materials. 2 figs.

  6. Catalytic two-stage coal hydrogenation process using extinction recycle of heavy liquid fraction

    DOE Patents [OSTI]

    MacArthur, James B. (Denville, NJ); Comolli, Alfred G. (Yardley, PA); McLean, Joseph B. (Somerville, NJ)

    1989-01-01T23:59:59.000Z

    A process for catalytic two-stage hydrogenation and liquefaction of coal with selective extinction recycle of all heavy liquid fractions boiling above a distillation cut point of about 600.degree.-750.degree. F. to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal feed is slurried with a process-derived liquid solvent normally boiling above about 650.degree. F. and fed into a first stage catalytic reaction zone operated at conditions which promote controlled rate liquefaction of the coal, while simultaneously hydrogenating the hydrocarbon recycle oils. The first stage reactor is maintained at 710.degree.-800.degree. F. temperature, 1000-4000 psig hydrogen partial pressure, and 10-90 lb/hr per ft.sup.3 catalyst space velocity. Partially hydrogenated material withdrawn from the first stage reaction zone is passed directly to the second stage catalytic reaction zone maintained at 760.degree.-860.degree. F. temperature for further hydrogenation and hydroconversion reactions. A 600.degree.-750.degree. F..sup.+ fraction containing 0-20 W % unreacted coal and ash solids is recycled to the coal slurrying step. If desired, the cut point lower boiling fraction can be further catalytically hydrotreated. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, to provide significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of hydrocarbon gases, and no net production of undesirable heavy oils and residuum materials.

  7. Environmental Assessment for Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas

    SciTech Connect (OSTI)

    Not Available

    1993-06-01T23:59:59.000Z

    This Environmental Assessment (EA) has been prepared pursuant to the implementing regulations to the National Environmental Policy Act (NEPA), which require federal agencies to assess the environmental impacts of a proposed action to determine whether that action requires the preparation of an Environmental Impact Statement (EIS) or if a Finding of No Significant Impact (FONSI) can be issued. The Pantex Plant does not possess permanent containerized waste staging facilities with integral secondary containment or freeze protection. Additional deficiencies associated with some existing staging facilities include: no protection from precipitation running across the staging pads; lack of protection against weathering; and facility foundations not capable of containing leaks, spills or accumulated precipitation. These shortcomings have raised concerns with respect to requirements under Section 3001 of the Resource Conservation and Recovery Act (RCRA). Deficiencies for these waste staging areas were also cited by a government audit team (Tiger Team) as Action Items. The provision for the staging of hazardous, mixed, and low level waste is part of the no-action altemative in the Programmatic Environmental Impact Statement for the integrated ER/WM program. Construction of this proposed project will not prejudice whether or not this integration will occur, or how.

  8. Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds

    DOE Patents [OSTI]

    Comolli, Alfred G. (Yardley, PA); Lee, Lap-Keung (Cranbury, NJ)

    2001-01-01T23:59:59.000Z

    A multi-stage catalytic hydrogenation and hydroconversion process for heavy hydrocarbon feed materials such as coal, heavy petroleum fractions, and plastic waste materials. In the process, the feedstock is reacted in a first-stage, back-mixed catalytic reactor with a highly dispersed iron-based catalyst having a powder, gel or liquid form. The reactor effluent is pressure-reduced, vapors and light distillate fractions are removed overhead, and the heavier liquid fraction is fed to a second stage back-mixed catalytic reactor. The first and second stage catalytic reactors are operated at 700-850.degree. F. temperature, 1000-3500 psig hydrogen partial pressure and 20-80 lb./hr per ft.sup.3 reactor space velocity. The vapor and light distillates liquid fractions removed from both the first and second stage reactor effluent streams are combined and passed to an in-line, fixed-bed catalytic hydrotreater for heteroatom removal and for producing high quality naphtha and mid-distillate or a full-range distillate product. The remaining separator bottoms liquid fractions are distilled at successive atmospheric and vacuum pressures, low and intermediate-boiling hydrocarbon liquid products are withdrawn, and heavier distillate fractions are recycled and further upgraded to provide additional low-boiling hydrocarbon liquid products. This catalytic multistage hydrogenation process provides improved flexibility for hydroprocessing the various carbonaceous feedstocks and adjusting to desired product structures and for improved economy of operations.

  9. Stages of destruction and elastic compression of granular nanoporous carbon medium at high pressures

    E-Print Network [OSTI]

    I. M. Neklyudov; O. P. Ledenyov; N. B. Bobrova; A. A. Chupikov

    2015-05-14T23:59:59.000Z

    The granular nanoporous carbon medium, made of the cylindrical coal granules of the adsorbent of SKT 3, at an influence by the high pressures from 1MPa to 3GPa has been researched. The eight consecutive stages of the materials specific volume change, which is characterized by a certain dependence of the volume change on the pressure change, have been registered. It is shown that there is a linear dependence on the double log log plot of the materials specific volume change on the pressure for an every stage of considered process. The two stages are clearly distinguished such as a stage of materials mechanical destruction, and a stage of elastic compression of material without the disintegration of structure at a nanscale. The hysteresis dependence of the materials specific volume change on the pressure change at the pressure decrease is observed. The small disperse coal dust particles jettisoning between the high pressure cell and the base plate was observed, resulting in the elastic stress reduction in relation to the small disperse coal dust particles volume. The obtained research data can be used to improve the designs of air filters for the radioactive chemical elements absorption at the NPP with the aims to protect the environment.

  10. Programming Stage

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

    1997-05-21T23:59:59.000Z

    This chapter addresses plans for the acquisition and installation of operating environment hardware and software and design of a training program.

  11. The effects of salinity on the growth and survival of the postlarval stages of Gambusia affinis

    E-Print Network [OSTI]

    Omundson, Glenn Erwin

    1963-01-01T23:59:59.000Z

    of MASTER OP SCIBNCB january l963 Ma Jor Subject: Biological Oceanography THE EFFECTS OF SALINIIY ON THE GROWTH AND SURVIVAL OF THE POSI'LARVAL STAGES OF GAMBUSIA AFFINIS A Thesis Glenn Erwln Omundson h aved as to style and content by: Irman of Com... on the growth of the poetlarval stages of Gambusia affinis, This was accomplished by controlling all environmental factors other than salinity, l. e. , temperature, food, light, pH and fish per unit volume of water. CHAPTER II MATERIALS AND METHODS...

  12. Phase Stable Net Acceleration of Electrons From a Two-Stage Optical Accelerator

    SciTech Connect (OSTI)

    Sears, Christopher M.S.; /SLAC /Munich, Max Planck Inst. Quantenopt.; Colby, Eric; England, R.J.; Ischebeck, Rasmus; McGuinness, Christopher; Nelson, Janice; Noble, Robert; Siemann, Robert H.; Spencer, James; Walz, Dieter; /SLAC; Plettner, Tomas; Byer, Robert L.; /Stanford U., Phys. Dept.

    2011-11-11T23:59:59.000Z

    In this article we demonstrate the net acceleration of relativistic electrons using a direct, in-vacuum interaction with a laser. In the experiment, an electron beam from a conventional accelerator is first energy modulated at optical frequencies in an inverse-free-electron-laser and bunched in a chicane. This is followed by a second stage optical accelerator to obtain net acceleration. The optical phase between accelerator stages is monitored and controlled in order to scan the accelerating phase and observe net acceleration and deceleration. Phase jitter measurements indicate control of the phase to {approx}13{sup o} allowing for stable net acceleration of electrons with lasers.

  13. Grain sorghum response to different flooding periods at the early boot stage

    E-Print Network [OSTI]

    Zolezzi del Rio, Oscar

    1976-01-01T23:59:59.000Z

    The following steps should be considered in this drainage research program: 1. Compile as much of the drainage data as is possible and publish it in one report, 2. Since there are so many parameters that effect drainage, try to work with models to eliminate... of inundations of different lengths at the sensitive early vegetative growth stage have been determined. The purpose of the research reported herein was to determine the effects of different lengths of flooding at the other sensitive stage, the early...

  14. Liquid phase methanol reactor staging process for the production of methanol

    DOE Patents [OSTI]

    Bonnell, Leo W. (Macungie, PA); Perka, Alan T. (Macungie, PA); Roberts, George W. (Emmaus, PA)

    1988-01-01T23:59:59.000Z

    The present invention is a process for the production of methanol from a syngas feed containing carbon monoxide, carbon dioxide and hydrogen. Basically, the process is the combination of two liquid phase methanol reactors into a staging process, such that each reactor is operated to favor a particular reaction mechanism. In the first reactor, the operation is controlled to favor the hydrogenation of carbon monoxide, and in the second reactor, the operation is controlled so as to favor the hydrogenation of carbon dioxide. This staging process results in substantial increases in methanol yield.

  15. Design Considerations, Installation and Operation of the Two-Stage Parallel Flow Absorption Chiller 

    E-Print Network [OSTI]

    Hufford, P. E.

    1984-01-01T23:59:59.000Z

    of the positive attributes of absorption air con- ditioning while eliminating or minimizing past prob- lems. The most significant difference is the effic- iency of the new two-stage parallel flow absorption chiller. With COP'S ranging up to 1.21, a great deal... operating effic- iency of the nystem. The specific fuel consumpti~n of the two-stage parallel flow absorption chiller actually improves as load drops from 100%. The average fuel consumption is for all practical pur- poses constanls from 100% load down...

  16. EIS-0433-S1: Keystone XL Pipeline SEIS (Montana, South Dakota, and Nebraska)

    Broader source: Energy.gov [DOE]

    This EIS analyzes the potential environmental impacts of a revised proposal for the Keystone XL pipeline and related facilities. The proposed facilities would transport crude oil from the Western Canadian Sedimentary Basin and the Williston Basin to existing pipeline facilities near Steele City, Nebraska, for onward transport to markets in the Texas Gulf Coast area. DOE is a cooperating agency. DOE's Western Area Power Administration has jurisdiction over certain proposed transmission facilities relating to the proposal, including construction and operation of a portion of a 230-kilovolt transmission line and construction and operation of two new substations and the expansion of six existing substations.

  17. EIS-0477: San Juan Basin Energy Connect Project, San Juan County, New Mexico and La Plata County, Colorado

    Broader source: Energy.gov [DOE]

    The Department of the Interior’s Bureau of Land Management is preparing an EIS to evaluate the potential environmental impacts of a proposal to construct a 230-kilovolt transmission line from the Farmington area in northwest New Mexico to Ignacio, Colorado, to relieve transmission constraints, serve new loads, and offer economic development through renewable energy development in the San Juan Basin. DOE’s Western Area Power Administration is a cooperating agency; the proposed transmission line would require an interconnection with Western's Shiprock Substation, near Farmington, and a new Three Rivers Substation on Western's reserved lands.

  18. Updated Capital Cost Estimates for Utility Scale Electricity...

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    turbines, and other auxiliary equipment * Electrical and instrumentation and control: electrical transformers, switchgear, motor control centers, switchyards, distributed...

  19. Powerline Conductor Operational Testing Facility (PCOT) The Powerline Conductor Operational Testing Facility (PCOT), currently planned for

    E-Print Network [OSTI]

    , a 9-unit, 1400 MW coal- fired generating power station and switchyard, which is 10 miles to the West

  20. Loads Providing Ancillary Services: Review of International Experience-- Technical Appendix: Market Descriptions

    E-Print Network [OSTI]

    Grayson Heffner, Charles Goldman, Kintner-Meyer, M; Kirby, Brendan

    2007-01-01T23:59:59.000Z

    Current Transformer explosion in NSW Ground fault causestransformer) explosion in the Bayswater 330 V switchyard. The subsequent buss fault

  1. Continuous imaging of plasmon rulers in live cells reveals early-stage caspase-3 activation

    E-Print Network [OSTI]

    Craik, Charles S.

    Continuous imaging of plasmon rulers in live cells reveals early-stage caspase-3 activation of plasmon coupling in metal nanoparticles has shown great potential for the optical characterization of many biological processes. Recently, we have demonstrated the use of ``plasmon rulers'' to observe conformational

  2. Model reduction applied to multi-stage assemblies of bladed disks

    E-Print Network [OSTI]

    Boyer, Edmond

    or parametric modelling (rotation, temperature effects,...) can be carried out with more complex models. In bothModel reduction applied to multi-stage assemblies of bladed disks A. Sternch¨uss, E. Balm´e Ravaud, 77550 Moissy-Cramayel Cedex, France Abstract This paper deals with model reduction of assemblies

  3. On the random 2-stage minimum spanning tree Abraham D. Flaxman

    E-Print Network [OSTI]

    Krivelevich, Michael

    On the random 2-stage minimum spanning tree Abraham D. Flaxman Department of Mathematical Sciences random variables, uniformly distributed between 0 and 1, then the expected cost of the minimum spanning tree is asymptotically equal to #16;(3) = P 1 i=1 i 3 . Here we consider the following stochastic two

  4. On the initial stages of cement hydration S. J. Preece, J. Billingham and A. C. King

    E-Print Network [OSTI]

    Billingham, John

    On the initial stages of cement hydration S. J. Preece, J. Billingham and A. C. King School the initial mixing of cement, an induction period occurs during which its consistency remains constant- stituent of cement, which is believed to be responsible for the initial development of its strength. Our

  5. A multiphase model for the early stages of the hydration of retarded oilwell cement

    E-Print Network [OSTI]

    Billingham, John

    A multiphase model for the early stages of the hydration of retarded oilwell cement J. Billingham, Birmingham B15 2TT, UK A.M. Harrisson The Rugby Group, RMC House Rugby CV21 2DT, UK Abstract. Cement is used in the oil industry to line oil wells. The major com- ponents of oilwell cement are tricalcium silicate (C3S

  6. Tracing the evolutionary stage of Bok globules: CCS and NH3

    E-Print Network [OSTI]

    Marka, C; Launhardt, R; Semenov, D A; Henning, Th

    2011-01-01T23:59:59.000Z

    We pursue the investigation of a previously proposed correlation between chemical properties and physical evolutionary stage of isolated low-mass star-forming regions. In the past, the NH3/CCS abundance ratio was suggested to be a potentially useful indicator for the evolutionary stage of cloud cores. We aim to study its applicability for isolated Bok globules. A sample of 42 Bok globules with and without signs of current star formation was searched for CCS(2-1) emission, the observations were complemented with NH3 measurements available in the literature and own observations. The abundance ratio of both molecules is discussed with respect to the evolutionary stage of the objects and in the context of chemical models. The NH3/CCS ratio could be assessed for 18 Bok globules and is found to be moderately high and roughly similar across all evolutionary stages from starless and prestellar cores towards internally heated cores harbouring protostars of Class 0, Class I or later. Bok globules with extremely high CC...

  7. Feedforward Control of a Piezoelectric Flexure Stage for AFM Yang Li and John Bechhoefer

    E-Print Network [OSTI]

    Bechhoefer, John

    to physics [1], [2]; by the publication, by control engineers, of the first textbook on modern control theory of an interesting "cross-over" work that analyzes physical systems from a control perspective [4]. While influencesFeedforward Control of a Piezoelectric Flexure Stage for AFM Yang Li and John Bechhoefer Abstract

  8. A TWO-STAGE APPROACH TO SOLVING LARGE-SCALE OPTIMAL POWER FLOWS

    E-Print Network [OSTI]

    Gross, George

    A TWO-STAGE APPROACH TO SOLVING LARGE-SCALE OPTIMAL POWER FLOWS *F e l i x F. Wu George Gross James problem is formulated as an unconstrained minimization problem using penalty functions and i s solved ] and Sasson and Merrill [ 3 ] . The s i z e and t h e extensive amount of computation involved i n solving t h

  9. Modelling and Analysis of Multi-Stage Systems of Mistuned Bladed Disks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    uncertainty may be due to numerous factors such as material inho- mogeneity, manufacturing processes of uncertainties in complex computational models. In turbine engines rotating components (bladed disks), one of mistuning phenomena in multi- stage systems of bladed disks. Indeed, in modern turbine engines, which

  10. of CARNEGIE MUSEUM OF NATURAL HISTORY MAMMALIAN PALEONTOLOGY ON A GLOBAL STAGE

    E-Print Network [OSTI]

    California at Berkeley, University of

    BULLETIN of CARNEGIE MUSEUM OF NATURAL HISTORY MAMMALIAN PALEONTOLOGY ON A GLOBAL STAGE: PAPERS, USA 2007 #12;BULLETIN OF CARNEGIE MUSEUM OF NATURAL HISTORY Number 39, pages 1­234, 94 figures, 20. BULLETINs of CARNEGIE MUSEUM OF NATURAL HISTORY are published at irregular intervals by Carnegie Museum

  11. Multi-Stage Converters: A New Technology for Traction Drive Juan W. Dixon

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    demonstrated the feasibility to build multi-stage converters for real electric vehicles or electric buses System". 1. Introduction Power Electronics technologies contribute with important part in the development of electric vehicles. On the other hand, the PWM techniques used today to control modern static converters

  12. Hostile Takeover by Plasmodium: Reorganization of Parasite and Host Cell Membranes during Liver Stage

    E-Print Network [OSTI]

    Arnold, Jonathan

    MalaR (European Virtual Institute for Malaria Research) and Malsig (Signalling in life cycle stages of malaria is transmitted by female Anopheles mosquitoes and undergoes obligatory development within a parasitophorous to mask itself from the host immune system and bypass the numerous Kupffer cells on its way

  13. Prudhoe Bay Oil Production Optimization: Using Virtual intelligence Techniques, Stage One: Neural Model Building

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    SPE 77659 Prudhoe Bay Oil Production Optimization: Using Virtual intelligence Techniques, Stage One.998 respectively. This is the first phase in the development of a tool to maximize total field oil production capacity and subsequent oil production. Figure 2 illustrates the range of daily average temperatures from

  14. Mind the Resonances: Final stages of accretion into bumpy black holes

    E-Print Network [OSTI]

    Georgios Lukes-Gerakopoulos; George Contopoulos

    2013-04-29T23:59:59.000Z

    In this article we discuss a possible way of testing the Kerr black hole hypothesis by taking advantage of phenomena correlated with chaotic motion in the final stages of an accretion disk around a bumpy black hole. We anticipate that these phenomena should have an imprint in the electromagnetic spectrum coming from the accretion disk.

  15. Propagating Uncertainty in Solar Panel Performance for Life Cycle Modeling in Early Stage Design

    E-Print Network [OSTI]

    Yang, Maria

    Propagating Uncertainty in Solar Panel Performance for Life Cycle Modeling in Early Stage Design. This work is conducted in the context of an amorphous photovoltaic (PV) panel, using data gathered from the National Solar Radiation Database, as well as realistic data collected from an experimental hardware setup

  16. A Computer Program for Simulating Transient Behavior in Steam Turbine Stage Pressure of AHWR

    SciTech Connect (OSTI)

    Dutta, Anu; Thangamani, I.; Chakraborty, G.; Ghosh, A.K.; Kushwaha, H.S. [Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085 (India)

    2006-07-01T23:59:59.000Z

    It is proposed to couple the Advanced Heavy water reactor (AHWR), which is being developed by Bhabha Atomic Research Centre, India, with a desalination plant. The objective of this coupling is to produce system make-up and domestic water. The proposed desalination plant needs about 1.9 kg/sec of steam and the minimum pressure requirement is 3 bars. The desalination plant can be fed with bled steam extracted from a suitable stage in low pressure turbine. As the turbine stage pressure changes with the load, it is essential to know the availability of bled steam at aforesaid pressure for various load condition. The objective of the present study is to identify a suitable extraction point so as to ensure availability of steam at desired condition for desalination plant, even at part load conditions. In order to fulfill the above objective a steam and feed system analysis code was developed which incorporates the mathematical formulation of different components of the steam and feed system such as, high pressure (HP) and low pressure (LP) turbines, re-heater, feed heaters etc. The dynamic equations are solved simultaneously to obtain the stage pressure at various load conditions. Based on the results obtained, the suitable extraction stage in LP turbine was selected. This enables to determine the lowest possible part load operation up to which availability of desalination plant could be ensured. (authors)

  17. OPTICAL DESIGN OF A NOVEL 2-STAGE SOLAR TROUGH CONCENTRATOR BASED ON PNEUMATIC POLYMERIC

    E-Print Network [OSTI]

    -length 7.9 m-width sun-tracking prototype system. Theoretical maximum solar concentration ratio is 151 sunsOPTICAL DESIGN OF A NOVEL 2-STAGE SOLAR TROUGH CONCENTRATOR BASED ON PNEUMATIC POLYMERIC STRUCTURES Croce 1, 6710 Biasca, Switzerland 3 Solar Technology Laboratory, Paul Scherrer Institute, 5232 Villigen

  18. VIBRATION REDUCTION OF A SINGLE CYLINDER RECIPROCATING COMPRESSOR BASED ON MULTI-STAGE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 VIBRATION REDUCTION OF A SINGLE CYLINDER RECIPROCATING COMPRESSOR BASED ON MULTI-STAGE BALANCING, INSA-Lyon, LaMCoS UMR5259, F69621, Villeurbanne, France ** Danfoss Commercial Compressors, F01600, a reciprocating compressor consists of three main mechanical subsets: the hermetic housing, the crankcase

  19. Late-Stage Mafic Injection and Thermal Rejuvenation of the Vinalhaven Granite,

    E-Print Network [OSTI]

    Mcdonough, William F.

    Late-Stage Mafic Injection and Thermal Rejuvenation of the Vinalhaven Granite, Coastal Maine R. A The Vinalhaven intrusive complex consists mainly of coarse-grained granite, inward-dipping gabbro­diorite sheets, and a fine-grained granite core. Small bodies of porphyry occur throughout the coarse- grained granite

  20. Sujet de stage de M2 : Automates cellulaires et groupe F de R. Thompson

    E-Print Network [OSTI]

    Lefèvre, Laurent

    Sujet de stage de M2 : Automates cellulaires et groupe F de R. Thompson Co-encadré par N.Aubrun et E.Ghys Le groupe F de Richard Thompson possède différentes représentations : engendré par deux géné raisons. Il a originellement été utilisé par McKenzie et Thompson pour construire des exemples de groupes

  1. Molecular Hydrogen from Methanol Maser Sources { Out ow from the Earliest Stage of Star Formation?

    E-Print Network [OSTI]

    Burton, Michael

    Molecular Hydrogen from Methanol Maser Sources { Out ow from the Earliest Stage of Star Formation in its natal molecular cloud. The strong methanol maser transition 5 1 { 6 0 A + at 6.7 GHz has also been that methanol maser emission usually occurs in massive star forming regions but away from the UCHII regions

  2. Advanced Staged Control Design for Stellar Interferometry with Experimental Results on SPHERES

    E-Print Network [OSTI]

    Benjamin Fragnière, David W. Miller Septembre 2011 SSL # 15-11 #12;#12;Advanced Staged Control Design 2011 SSL # 15-11 This work is based on the unaltered text of the thesis by Benjamin Fragnière submitted by the Space System Laboratory (SSL). The goal was the control of the optical path length going from a laser

  3. Heat transfer and film-cooling for the endwall of a first stage turbine vane

    E-Print Network [OSTI]

    Thole, Karen A.

    as the pressure side horseshoe vortex, develops as the flow is turned by the turbine vane or rotor bladeHeat transfer and film-cooling for the endwall of a first stage turbine vane Karen A. Thole of the airfoils. One means of preventing degradation in the turbine is to film-cool components whereby coolant

  4. Automatic classification of Sleep Stages on a EEG signal by Artificial Neural Networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Automatic classification of Sleep Stages on a EEG signal by Artificial Neural Networks Nizar of modeling and design to improve the performances of our tool. Key-Words: - Artificial Neural Networks data analysis tools. Concerning this latter point, we have proposed that Artificial Neural Networks

  5. UPF Study Abroad Program 2013 Course Syllabus-Barcelona on Stage: documentary workshop

    E-Print Network [OSTI]

    UPF Study Abroad Program 2013 Course Syllabus- Barcelona on Stage: documentary workshop Language project Will participate in the shooting and editing of a short documentary movie. #12;UPF Study Abroad) absences or more The student receives an INCOMPLETE for the course #12;UPF Study Abroad Program 2013

  6. A Model Reference Adaptive PID Control for Electromagnetic Actuated Micro-positioning Stage

    E-Print Network [OSTI]

    Li, Yangmin

    , a model reference adaptive PID controller design process is introduced. Then control parameters the process for controlling the micro- positioning stage, which shows that the adopted controller can drive between the moving platform and the stator. Several kinds of actuators can realize non

  7. Dynamic Programming Approximations for Stochastic, Time-Staged Integer Multicommodity Flow Problems

    E-Print Network [OSTI]

    Topaloglu, Huseyin

    . We propose an iterative, adaptive dynamic programming-based methodology that makes use of linear andDynamic Programming Approximations for Stochastic, Time-Staged Integer Multicommodity Flow Problems by a set of indivisible and reusable resources of different types. The assignment of a resource to a task

  8. Identification and compensation of friction for a dual stage positioning system 

    E-Print Network [OSTI]

    Thimmalapura, Satish Voddina

    2005-11-01T23:59:59.000Z

    increases the accuracy of the read/write head in hard disk drives. A scaled up version of the dual stage actuator is considered as the test bed for this thesis. Friction is present in all electromechanical systems. This thesis deals with modelling...

  9. DESCRIPTIONS OF PREZOEAE AND STAGE I ZOEAE OF CHIONOECETES BAIRDI AND C. OPILIO

    E-Print Network [OSTI]

    on the early life history stages, especially larval distribution and abundance. Positive identificationUbfamily from the North Pacific Ocean. MATERIALS AND METHODS t During a National Marine Fisheries Service raw) was caught May 12 in 46 fathoms at lat. 56°01'N, long. 162°25'W. My identification of the two species

  10. Mathematical model of a three-stage innate immune response to a pneumococcal lung infection

    E-Print Network [OSTI]

    Adler, Fred

    Mathematical model of a three-stage innate immune response to a pneumococcal lung infection Amber M in the lung: resident alveolar macrophages, neutrophils and monocyte-derived macrophages. The alveolar migrate to the lungs resulting in a more serious infection. Nevertheless, only a small fraction

  11. Functional Response of Larval and Adult Stages of Hippodamia variegata (Coleoptera: Coccinellidae) to Different Densities of

    E-Print Network [OSTI]

    Juliano, Steven A.

    : Coccinellidae) to Different Densities of Aphis fabae (Hemiptera: Aphididae) ROYA FARHADI,1 HOSSEIN ALLAHYARI,1 on Aphis fabae (Scolpoli) (Hemiptera: Aphididae) by estimating the functional responses of all stages, Aphis fabae, searching efÞciency, han- dling time Black bean aphid, Aphis fabae (Scolpoli) (Hemiptera

  12. Glide of hollow fibers at the bridging stage of fracture in ceramic nanocomposites

    E-Print Network [OSTI]

    Ovid'ko Ilya A.

    . Consider a model fibrous nanocomposite consisting of ceramic matrix and unidirectional continuous nanoGlide of hollow fibers at the bridging stage of fracture in ceramic nanocomposites M.Yu. Gutkin in ceramic nanocomposites. An elementary event of such glide is treated through generation and slip

  13. Cycle Analysis on Ocean Geothermal Power Generation using Multi-staged Turbine

    E-Print Network [OSTI]

    Cycle Analysis on Ocean Geothermal Power Generation using Multi-staged Turbine 2013. 09. 11 Korea ORC #12;Cycle simulation Solver : HYSYS Basic simulation design T-S diagram Pump Turbine Evaporator & turbine : iso-entropic process Pump Turbine Evaporator Condenser 4 1 2 3 Geothermal water Deep seawater

  14. agbioresearch.msu.edu/centers/saginawvalley Picture Tour of Bean Growth Stages

    E-Print Network [OSTI]

    1 agbioresearch.msu.edu/centers/saginawvalley Picture Tour of Bean Growth Stages Saginaw Valley · Bean pods PLOWING Ground is fall or spring moldboard or chisel plowed. Chisel plowing is a reasonable. Planting starts the first of June. Beans are planted in rows with a planter, or can be solid seeded

  15. Multi-stage Learning for Robust Lung Segmentation in Challenging CT Volumes

    E-Print Network [OSTI]

    Multi-stage Learning for Robust Lung Segmentation in Challenging CT Volumes Michal Sofka1 , Jens Imaging, Siemens Healthcare, Oxford, UK Abstract. Simple algorithms for segmenting healthy lung parenchyma an ini- tialization of a statistical shape model of the lungs. The initialization first detects

  16. Robust Segmentation of Challenging Lungs in CT using Multi-Stage Learning

    E-Print Network [OSTI]

    Robust Segmentation of Challenging Lungs in CT using Multi-Stage Learning and Level Set.Kevin Zhou1 Abstract Automatic segmentation of lung tissue in thoracic CT scans is useful for diagnosis and treatment planning of pulmonary diseases. Unlike healthy lung tissue that is easily identifiable in CT scans

  17. Comparison of CT, PET, and PET/CT for Staging of Patients with Indolent Non-Hodgkin’s Lymphoma

    E-Print Network [OSTI]

    Fueger, Barbara J.; Yeom, Kristen; Czernin, Johannes; Sayre, James W.; Phelps, Michael E.; Allen-Auerbach, Martin S.

    2009-01-01T23:59:59.000Z

    Differences between PET and CT were not significant forperformed significantly better than PET and CT in correctlyadditional information over PET and CT for the staging and

  18. A Multidisciplinary Approach for Identifying Stage-specific Transcription Factor Binding Sites in the Irish Potato Famine Pathogen, Phytophthora infestans

    E-Print Network [OSTI]

    Roy, Sourav

    2011-01-01T23:59:59.000Z

    stages in the Irish potato famine pathogen, Phytophthoraelements in Irish potato famine pathogen Phytophthorastages in the Irish potato famine pathogen, Phytophthora

  19. | 128 | haematologica/the hematology journal | 2008; 93(1) 18-F FDG-PET in the staging of lymphocyte-predominant

    E-Print Network [OSTI]

    Boyer, Edmond

    in the staging of LPHD. Key words: 18F FDG-PET, FDG-PET/CT, lymphocyte-predominant Hodgkin's disease, staging| 128 | haematologica/the hematology journal | 2008; 93(1) 18-F FDG-PET in the staging retrospectively the usefulness of 18 F-FDG-PET in the staging of 31 patients with lymphocyte-predomi- nant Hodgkin

  20. GEOPHYSICAL INVESTIGATIONS OF THE ARCHAEOLOGICAL RESOURCES AT THE POWELL STAGE STATION

    SciTech Connect (OSTI)

    Hollie K. Gilbert; Julie B. Braun; Brenda R. Pace; Gail Heath; Clark Scott

    2009-04-01T23:59:59.000Z

    Within the boundaries of the Idaho National Laboratory, an ongoing archaeological investigation of a late 19th century stage station was expanded with the use of Electro-Magnetic and Magnetic geophysical surveying. The station known as the Powell Stage Station was a primary transportation hub on the Snake River Plain, bridging the gap between railroad supply depots in Blackfoot, Idaho and booming mining camps throughout Central Idaho. Initial investigations have shown a strong magnetic signature from a buried road and previously unknown features that were not detected by visual surface surveys. Data gained from this project aids in federally directed cultural resource and land management and use requirements and has contributed additional information for archeological interpretation and cultural resource preservation.

  1. Validation of a PC based program for single stage absorption heat pump. Final report

    SciTech Connect (OSTI)

    Zaltash, A.; Ally, M.R.

    1991-09-01T23:59:59.000Z

    An interactive computer code was developed to evaluate single stage absorption heat pump performance for temperature amplifier and heat amplifier modes using water as the refrigerant. This program performs the cycle calculations for single stage cycles based on the polynomial expressions developed to correlate experimental vapor-liquid-equilibrium (VLE) and specific enthalpy-concentration data for LiBr/water and (Li, K, Na)NO{sub 3}/water systems as well as the properties of pure water. The operating parameters obtained by this program were tested against mass and energy balances in documented cases and the results show that the maximum deviation between coefficient of performance (COP) values obtained by this software and the ones previously calculated is less than 3%. In addition, this program was used to study the effect of solution temperature leaving the absorber on the other operating parameters. This type of analysis could be used to improve and optimize cycle design. 4 refs.

  2. Validation of a PC based program for single stage absorption heat pump

    SciTech Connect (OSTI)

    Zaltash, A.; Ally, M.R.

    1991-09-01T23:59:59.000Z

    An interactive computer code was developed to evaluate single stage absorption heat pump performance for temperature amplifier and heat amplifier modes using water as the refrigerant. This program performs the cycle calculations for single stage cycles based on the polynomial expressions developed to correlate experimental vapor-liquid-equilibrium (VLE) and specific enthalpy-concentration data for LiBr/water and (Li, K, Na)NO{sub 3}/water systems as well as the properties of pure water. The operating parameters obtained by this program were tested against mass and energy balances in documented cases and the results show that the maximum deviation between coefficient of performance (COP) values obtained by this software and the ones previously calculated is less than 3%. In addition, this program was used to study the effect of solution temperature leaving the absorber on the other operating parameters. This type of analysis could be used to improve and optimize cycle design. 4 refs.

  3. Alternatives generation and analysis for the Phase I intermediate waste feed staging system design requirements

    SciTech Connect (OSTI)

    Claghorn, R.D., Fluor Daniel Hanford

    1997-02-06T23:59:59.000Z

    This alternatives generation and analysis (AGA) addresses the question: What is the design basis for the facilities required to stage low-level waste (LLW) feed to the Phase I private contractors? Alternative designs for the intermediate waste feed staging system were developed, analyzed, and compared. Based on these analyses, this document recommends installing mixer pumps in the central pump pit of double-shell tanks 241-AP-102 and 241-AP-104. Also recommended is installing decant/transfer pumps at these tanks. These recommendations have clear advantages in that they provide a low shedule impact/risk and the highest operability of all the alternatives investigated. This revision incorporates comments from the decision board.

  4. Two-stage high frequency pulse tube cooler for refrigeration at 25 K

    E-Print Network [OSTI]

    Dietrich, M

    2009-01-01T23:59:59.000Z

    A two-stage Stirling-type U-shape pulse tube cryocooler driven by a 10 kW-class linear compressor was designed, built and tested. A special feature of the cold head is the absence of a heat exchanger at the cold end of the first stage, since the intended application requires no cooling power at an intermediate temperature. Simulations where done using Sage-software to find optimum operating conditions and cold head geometry. Flow-impedance matching was required to connect the compressor designed for 60 Hz operation to the 40 Hz cold head. A cooling power of 12.9 W at 25 K with an electrical input power of 4.6 kW has been achieved up to now. The lowest temperature reached is 13.7 K.

  5. The Resistive-WELL detector: a compact spark-protected single amplification-stage MPGD

    E-Print Network [OSTI]

    G. Bencivenni; R. De Oliveira; G. Morello; M. Poli Lener

    2014-11-10T23:59:59.000Z

    In this work we present a novel idea for a compact spark-protected single amplification stage Micro-Pattern Gas Detector (MPGD). The detector amplification stage, realized with a structure very similar to a GEM foil, is embedded through a resistive layer in the readout board. A cathode electrode, defining the gas conversion/drift gap, completes the detector mechanics. The new structure, that we call Resistive-WELL (R-WELL), has some characteristics in common with previous MPGDs, such as C.A.T. and WELL, developed more than ten years ago. The prototype object of the present study has been realized in the 2009 by TE-MPE-EM Workshop at CERN. The new architecture is a very compact MPGD, robust against discharges and exhibiting a large gain ($\\sim$6$\\times$10$^3$), simple to construct and easy for engineering and then suitable for large area tracking devices as well as huge calorimetric apparata.

  6. Two-stage coprocessing of subbituminous coals and bitumen or heavy oil

    SciTech Connect (OSTI)

    Ignasiak, B.; Ohuchi, T.; Clark, P.; Aitchison, D.; Lee, T.

    1986-09-01T23:59:59.000Z

    Pretreatment of subbituminous coal with an appropriately formulated mix of carbon monoxide and water, in presence of bitumen or heavy oil, results in very fast reactions characterized by a high degree of coal solubilization and deoxygenation. The reaction is catalysed by a mixture of alkali metal carbonates and proceeds readily at 380-400/sup 0/C. The first-stage reaction product appears to be susceptible to further catalytic hydrogenation at 420-460/sup 0/C with gaseous hydrogen yielding 65-70% (on daf feed) of hydrogen-rich distillable oil, composed mainly of naphtha and middle oil. The process flowsheet is presented and the comparative economics of two-stage carbon monoxide/steam-hydrogen and hydrogen-hydrogen coprocessing schemes are discussed.

  7. Environmental performance of air staged combustor with flue gas recirculation to burn coal/biomass

    SciTech Connect (OSTI)

    Anuar, S.H.; Keener, H.M.

    1995-12-31T23:59:59.000Z

    The environmental and thermal performance of a 1.07 m diameter, 440 kW atmospheric fluidized bed combustor operated at 700{degrees}C-920{degrees}C and burning coal was studied. Flue gas recirculation was incorporated to enhance the thermal performance and air staging was used to control emissions of SO{sub 2}, CO, NO{sub x} and N{sub 2}O. Studies focused on the effect of excess air, firing rate, and use of sorbent on system performance. The recirculation-staging mode with limestone had the highest thermal efficiency (0.67) using the firing equation. Emission data showed that flue gas recirculation (ratio of 0.7) significantly reduced NO{sub x} emissions; and that use of limestone sorbent at a Ca/S ratio of 3 reduced SO{sub 2} emissions by 64% to approximately 0.310 g/MJ.

  8. Simulation and Analysis for Applying the Double-Stage Coupled Heat Pump System in the Villa of Cold Area 

    E-Print Network [OSTI]

    Yang, L.; Yao, Y.; Ma, Z.

    2006-01-01T23:59:59.000Z

    -to-water double-stage coupled heat pump system, is presented in this paper based on analyzing the characteristics of the villa district heating. Prediction and analysis of the feasibility of the double-stage coupled heat pump system in cold areas were carried...

  9. Team Work Survey To identify the present stage of the teamwork model where your team is presently

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Team Work Survey Objectives To identify the present stage of the teamwork model where your team, indicate how often your team displays each behavior by using the following scoring system: · Almost never on hand and do not spend too much time in the planning stage. 3. _____ Our team feels that we are all

  10. IMAGING OF EARLY-STAGE CRACKING ON REAL-SIZE CONCRETE STRUCTURE FROM 4-POINTS BENDING TEST

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    IMAGING OF EARLY-STAGE CRACKING ON REAL-SIZE CONCRETE STRUCTURE FROM 4-POINTS BENDING TEST Yuxiang difficulty on complexes material such as concrete, which is in part due the use of coherent waves in a very the application of this new technique on a real-size 15 tons concrete structure for imaging early-stage cracking

  11. Simulation and Analysis for Applying the Double-Stage Coupled Heat Pump System in the Villa of Cold Area

    E-Print Network [OSTI]

    Yang, L.; Yao, Y.; Ma, Z.

    2006-01-01T23:59:59.000Z

    -to-water double-stage coupled heat pump system, is presented in this paper based on analyzing the characteristics of the villa district heating. Prediction and analysis of the feasibility of the double-stage coupled heat pump system in cold areas were carried...

  12. Thompson -Dextrous Micromanipulation Based on Two 1 DoF Probes and 3 DoF Translating Stage Dextrous Micromanipulation

    E-Print Network [OSTI]

    Fearing, Ron

    Thompson - Dextrous Micromanipulation Based on Two 1 DoF Probes and 3 DoF Translating Stage Dextrous Micromanipulation Based on Two 1 DoF Probes and 3 DoF Translating Stage Jeff Thompson Department the operation. ProbeX is actually a long probe mounted on a 1 #12;Thompson - Dextrous Micromanipulation Based

  13. A Tunable X-Band SiGe HBT Single Stage Cascode Mustafa DOGAN1,2

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    A Tunable X-Band SiGe HBT Single Stage Cascode LNA Mustafa DOGAN1,2 1 TUBITAK ­ UEKAE, ETTM ­ EMC-band silicon-germanium (SiGe) single stage cascode tunable low-noise amplifier (LNA) for active phased array transmit/receive modules. LNA is implemented by using IHP SiGe heterojunction bipolar transistors (HBTs) 0

  14. Lysine Metabolism by the Mammary Gland of Lactating Goats at Two Stages of Lactation

    E-Print Network [OSTI]

    Bequette, Brian J.

    ) in response to an i.v. infusion of lysine (Lys) plus methionine (Met). At each stage of lactation [2-15 N] and [1-13 C; 6,6-2 H2] Lys kinetics were performed on the last day of 5-d i.v. infusion of saline higher in early than in late lactation, but LM infusion did not affect these variables. Regardless

  15. A review of "Staging England in the Elizabethan History Play: Performing National Identity" by Ralf Hertel

    E-Print Network [OSTI]

    Welch, Anthony

    2015-01-01T23:59:59.000Z

    22 seventeenth-century news Ralf Hertel. Staging England in the Elizabethan History Play: Performing National Identity. Farnham, Surrey: Ashgate, 2014. xi + 271 pp. + 14 illus. $119.95. Review by Anthony Welch, University of Tennessee, Knoxville... such as Liah Greenfeld and Anthony D. Smith, Hertel isolates five discourses that shaped England’s emerging national identity, and he links each one with an Elizabethan history play. A sequence of ten paired chap- ters explores cartography and Henry IV, Part...

  16. Italian Dramatic Companies and the Peruvian Stage in the 1870's. Part I.

    E-Print Network [OSTI]

    Glickman, Enrica J.

    1973-04-01T23:59:59.000Z

    stage. This undeserved neglect is to be attributed primarily to the difficulty of gathering and organizing the relevant information. This information is to be found not only in works dealing specifically with the theatre,1 but also, and especially..., after performing Adrienne Lecouvreur, Carolina Civili recited, in Italian, the last canto of the Divine Comedy. This event was appar ently something new for the audience. The daily newspaper El Comercio had announced it as the expected highlight...

  17. A two-stage 100 l/min circumferential slot virtual impactor system for bioaerosol concentration

    E-Print Network [OSTI]

    LaCroix, Daniel Edward

    2009-05-15T23:59:59.000Z

    A TWO-STAGE 100 L/min CIRCUMFERENTIAL SLOT VIRTUAL IMPACTOR SYSTEM FOR BIOAEROSOL CONCENTRATION A Thesis by DANIEL EDWARD LACROIX Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Andrew McFarland Committee Members, Yassin Hassan...

  18. Stage Presentation, Care Patterns, and Treatment Outcomes for Squamous Cell Carcinoma of the Penis

    SciTech Connect (OSTI)

    Burt, Lindsay M.; Shrieve, Dennis C.; Tward, Jonathan D., E-mail: Jonathan.Tward@hci.utah.edu

    2014-01-01T23:59:59.000Z

    Purpose: Penile squamous cell carcinoma (SCC) is a rare entity, with few published series on outcomes. We evaluated the stage distributions and outcomes for surgery and radiation therapy in a U.S. population database. Methods and Materials: Subjects with SCC of the penis were identified using the National Cancer Institute Surveillance, Epidemiology and End Results (SEER) Program database between 1988 and 2006. Descriptive statistics were performed, and cause-specific survival (CSS) was estimated using Kaplan-Meier analysis. Comparisons of treatment modalities were analyzed using multivariate Cox regression. Subjects were staged using American Joint Committee on Cancer, sixth edition, criteria. Results: There were 2458 subjects identified. The median age was 66.8 years (range, 17-102 years). Grade 2 disease was present in 94.5% of cases. T1, T2, T3, T4, and Tx disease was present in 64.8%, 17.1%, 9.5%, 2.1%, and 6.5% of cases, respectively. N0, N1, N2, N3, and Nx disease was noted in 61.6%, 6.9%, 4.0%, 3.7%, and 23.8% of cases, respectively. M1 disease was noted in 2.5% of subjects. Individuals of white ethnicity accounted for 85.1% of cases. Lymphadenectomy was performed in 16.7% of cases. The CSS for all patients at 5 and 10 years was 80.8% and 78.6%. By multivariable analysis grades 2 and 3 disease, T3 stage, and positive lymph nodes were adverse prognostic factors for CSS. Conclusion: SCC of the penis often presents as early-stage T1, N0, M0, grade 1, or grade 2 disease. The majority of patients identified were treated with surgery, and only a small fraction of patients received radiation therapy alone or as adjuvant therapy.

  19. Implementation du rendu MIP avec WebGL Proposition de Stage 20132014

    E-Print Network [OSTI]

    Ernst, Damien

    Impl´ementation du rendu MIP avec WebGL Proposition de Stage 2013­2014 D´epartement de physique m le stockage et l'indexation des images m´edicales) bas´e sur des technologies Web. Ce serveur peut la technologie WebGL. N´eanmoins, pour qu'elle soit utile, la visualisation d'images m´edicales doit

  20. Impairment in early stages of visual information processing in nonpsychotic schizotypic individuals

    E-Print Network [OSTI]

    Steronko, Robert Jon

    1977-01-01T23:59:59.000Z

    ; Haber and Hershenson, 1973) which assume that sensory information is first stored in a transient display system which Neisser (1967) termed iconic storage. Information in iconic storage is then scanned or "read out" into more central mechanisms (e.... g. , short-term memory). In backward masking, the second stimulus (mask) is seen as affecting the processing of the first stimulus (target) at this level, either during icon formation or in processinq from the icon to later stages (Haber...

  1. Response of peanuts to irrigation management at different crop growth stages

    E-Print Network [OSTI]

    Dahmen, Pieter George

    1980-01-01T23:59:59.000Z

    FOR TREATMENT 5. . . 11. CUMULATIVE ET OVER TIME FOR TREATMENT 6. . 12. CUMULATIVE ET OVER TIME FOR TPEATMENT 7. . 13 CUMULATIVE ET OVER TIME FOR TREATMENT 8 14. LEAF AREA INDEX OVER TIME FOR TREATMENTS 1-4 15. LEAF AREA INDEX OVER TIME FOR TREATMENTS 5... Seasonal Evapotranspiration Hater Use Efficiency Relative Yield Versus Relative Evapotranspiration Cumulative ET Versus Time Evapotranspiration During Each Crop Growth Stage Leaf Area Index Dry Matter Accumulation SUMMARY AND CONCLUSIONS...

  2. Phenotypic and Molecular Genetic Analysis of Reproductive Stage Heat Tolerance in Wheat (Triticum aestivum)

    E-Print Network [OSTI]

    Mason, Richard Esten

    2011-08-08T23:59:59.000Z

    population (n=121) for yield and yield components in the field that show co-localization with heat susceptibility index from the greenhouse .......... 137 1 CHAPTER I INTRODUCTION: PHYSIOLOGICAL AND MOLECULAR GENETIC BREEDING STRATEGIES... and susceptible backgrounds. The working hypothesis is that major QTL regulating reproductive stage heat tolerance in wheat are stable across genetic backgrounds and in different environments. A comparative analysis combining genetic maps from both RIL...

  3. Airborne LiDAR Detects Selectively Logged Tropical Forest Even in an Advanced Stage of Recovery

    E-Print Network [OSTI]

    Kent, Rafi; Lindsell, Jeremy A.; Laurin, Gaia Vaglio; Valentini, Riccardo; Coomes, David A.

    2015-01-01T23:59:59.000Z

    logged tropical forests: the attained and the attainable. Conserv. Lett. 2012, 5, 296–303. 10. Silver, W. L.; Ostertag, R.; Lugo, a. E. The Potential for Carbon Sequestration Through Reforestation of Abandoned Tropical Agricultural and Pasture Lands... forests can be of high conservation value [2,7–9] and act as globally-important carbon sinks [9–12]. However, there is much uncertainty regarding the changing extent of regenerating forests, their rate and stage of recovery, and the influence...

  4. A Review of "Shakespeare, Politics, and Italy: Intertextuality on the Jacobean Stage

    E-Print Network [OSTI]

    Wilson, Hugh F.

    2010-01-01T23:59:59.000Z

    180 seventeenth-century news turns out to be more complex and multifaceted than we might have wished? (133). Nevertheless, Dutton brings as much of the available evidence for his case together as is presently possible to assemble, and he makes.... Shakespeare, Politics, and Italy: Intertextuality on the Jacobean Stage. Farnham, Surrey, UK and Burlington, Vermont: Ashgate, 2009. x + 242pp. $99.95. Review by hugh f. wilson, grambling state university. In ?Of Studies,? Lord Bacon remarks that some...

  5. Advanced atmospheric fluidized-bed combustion design: the staged cascading fluidized-bed combustor

    SciTech Connect (OSTI)

    Not Available

    1985-02-19T23:59:59.000Z

    The distinctive features of the Staged Cascade Fluidized Bed Combustor (SCFBC) are: combustion is accomplished in two cascaded fluidized beds, with coal fed between the beds; sulfation occurs in two cascaded fluidized beds with the spent sorbent being reactivated between the beds; all heat exchange tubes are submerged in a series of cascaded fluidized beds to improve heat transfer efficiency; the lowest stage provides cooling of spent bed materials and preheating of incoming air; and all of the fluidized beds are shallow, roughly 4'' to 8'' expanded bed depth. The SCFBC does not require external convective section, economizer, air preheater, or spent solids cooling system, as does the AFBC. All the functions of those traditional components are performed within the SCFBC. The shallow beds and low pressure drop distributor plates of the SCFBC have cumulative pressure drop essentially equal to the pressure drop across the single deep bed of a conventional AFBC. Better fuel utilization is achieved in the SCFBC, which achieves a carbon burnout of 97.1% vs 95.0% for the AFBC. The SCFBC advantage is due to the staging of combustion in two beds. The thermal efficiency of the SCFBC is higher than that of the AFBC (85.4%) vs 31.65%). The SCFBC accomplishes the specified SO removal with a significantly reduced amount of limestone adsorbent. The SCFBC has several other technical advantages over the AFBC which are mentioned. 11 figs., 23 tabs.

  6. Developing an inventor support service which performs early stage market and manufacturing evaluations. [Final Report

    SciTech Connect (OSTI)

    Not Available

    1991-10-01T23:59:59.000Z

    American businesses are learning the difficult high cost lesson of ignoring production and market factors (producibility, unit product cost (UPC), marketability, etc) during the engineering design phase of product development. Studies have shown that the Japanese spend three times as long as Americans in the design feasibility and decision process of new product introductions and one third the amount of time in the implementation of those products. There is a 20 to 1 cost benefit on effort applied in the design phase versus the production phase of the product life cycle. The number one goal of this project was to establish an organization that has, as one of its purposes, the providing of services responsive to the needs of independent inventors. The number two goal was to demonstrate the value of providing marketing and manufacturing counsel at an early stage in the product development process. The first study goal was met by providing the materials and information necessary to establish an evaluation team and an organization to handle such evaluations. The second study goal was met by demonstrating the impact of early market analysis and manufacturing considerations on product design and therefore on the description of the invention for four different inventions. These inventions were selected at various stages of development. Regardless of stage of development, the marketing and manufacturing reviews resulted in significant changes in design and/or market positioning.

  7. Developing an inventor support service which performs early stage market and manufacturing evaluations. Final report

    SciTech Connect (OSTI)

    Not Available

    1991-10-01T23:59:59.000Z

    American businesses are learning the difficult high cost lesson of ignoring production and market factors (producibility, unit product cost (UPC), marketability, etc) during the engineering design phase of product development. Studies have shown that the Japanese spend three times as long as Americans in the design feasibility and decision process of new product introductions and one third the amount of time in the implementation of those products. There is a 20 to 1 cost benefit on effort applied in the design phase versus the production phase of the product life cycle. The number one goal of this project was to establish an organization that has, as one of its purposes, the providing of services responsive to the needs of independent inventors. The number two goal was to demonstrate the value of providing marketing and manufacturing counsel at an early stage in the product development process. The first study goal was met by providing the materials and information necessary to establish an evaluation team and an organization to handle such evaluations. The second study goal was met by demonstrating the impact of early market analysis and manufacturing considerations on product design and therefore on the description of the invention for four different inventions. These inventions were selected at various stages of development. Regardless of stage of development, the marketing and manufacturing reviews resulted in significant changes in design and/or market positioning.

  8. Fuel injection staged sectoral combustor for burning low-BTU fuel gas

    DOE Patents [OSTI]

    Vogt, Robert L. (Schenectady, NY)

    1985-02-12T23:59:59.000Z

    A high-temperature combustor for burning low-BTU coal gas in a gas turbine is described. The combustor comprises a plurality of individual combustor chambers. Each combustor chamber has a main burning zone and a pilot burning zone. A pipe for the low-BTU coal gas is connected to the upstream end of the pilot burning zone: this pipe surrounds a liquid fuel source and is in turn surrounded by an air supply pipe: swirling means are provided between the liquid fuel source and the coal gas pipe and between the gas pipe and the air pipe. Additional preheated air is provided by counter-current coolant air in passages formed by a double wall arrangement of the walls of the main burning zone communicating with passages of a double wall arrangement of the pilot burning zone: this preheated air is turned at the upstream end of the pilot burning zone through swirlers to mix with the original gas and air input (and the liquid fuel input when used) to provide more efficient combustion. One or more fuel injection stages (second stages) are provided for direct input of coal gas into the main burning zone. The countercurrent air coolant passages are connected to swirlers surrounding the input from each second stage to provide additional oxidant.

  9. Fuel injection staged sectoral combustor for burning low-BTU fuel gas

    DOE Patents [OSTI]

    Vogt, Robert L. (Schenectady, NY)

    1981-01-01T23:59:59.000Z

    A high-temperature combustor for burning low-BTU coal gas in a gas turbine is described. The combustor comprises a plurality of individual combustor chambers. Each combustor chamber has a main burning zone and a pilot burning zone. A pipe for the low-BTU coal gas is connected to the upstream end of the pilot burning zone; this pipe surrounds a liquid fuel source and is in turn surrounded by an air supply pipe; swirling means are provided between the liquid fuel source and the coal gas pipe and between the gas pipe and the air pipe. Additional preheated air is provided by counter-current coolant air in passages formed by a double wall arrangement of the walls of the main burning zone communicating with passages of a double wall arrangement of the pilot burning zone; this preheated air is turned at the upstream end of the pilot burning zone through swirlers to mix with the original gas and air input (and the liquid fuel input when used) to provide more efficient combustion. One or more fuel injection stages (second stages) are provided for direct input of coal gas into the main burning zone. The countercurrent air coolant passages are connected to swirlers surrounding the input from each second stage to provide additional oxidant.

  10. A Human Life-Stage Physiologically Based Pharmacokinetic and Pharmacodynamic Model for Chlorpyrifos: Development and Validation

    SciTech Connect (OSTI)

    Smith, Jordan N.; Hinderliter, Paul M.; Timchalk, Charles; Bartels, M. J.; Poet, Torka S.

    2014-08-01T23:59:59.000Z

    Sensitivity to chemicals in animals and humans are known to vary with age. Age-related changes in sensitivity to chlorpyrifos have been reported in animal models. A life-stage physiologically based pharmacokinetic and pharmacodynamic (PBPK/PD) model was developed to computationally predict disposition of CPF and its metabolites, chlorpyrifos-oxon (the ultimate toxicant) and 3,5,6-trichloro-2-pyridinol (TCPy), as well as B-esterase inhibition by chlorpyrifos-oxon in humans. In this model, age-dependent body weight was calculated from a generalized Gompertz function, and compartments (liver, brain, fat, blood, diaphragm, rapid, and slow) were scaled based on body weight from polynomial functions on a fractional body weight basis. Blood flows among compartments were calculated as a constant flow per compartment volume. The life-stage PBPK/PD model was calibrated and tested against controlled adult human exposure studies. Model simulations suggest age-dependent pharmacokinetics and response may exist. At oral doses ? 0.55 mg/kg of chlorpyrifos (significantly higher than environmental exposure levels), 6 mo old children are predicted to have higher levels of chlorpyrifos-oxon in blood and higher levels of red blood cell cholinesterase inhibition compared to adults from equivalent oral doses of chlorpyrifos. At lower doses that are more relevant to environmental exposures, the model predicts that adults will have slightly higher levels of chlorpyrifos-oxon in blood and greater cholinesterase inhibition. This model provides a computational framework for age-comparative simulations that can be utilized to predict CPF disposition and biological response over various postnatal life-stages.

  11. Advanced atmospheric fluidized-bed combustion design: the staged cascading fluidized-bed combustor

    SciTech Connect (OSTI)

    Not Available

    1985-04-05T23:59:59.000Z

    Better fuel utilization is achieved in the SCFBC, which achieves a carbon burnout of 97.1% versus 95.0% for the AFBC. The SCFBC advantage is due to the staging of combustion in two beds. The thermal efficiency of the SCFBC is higher than that of the AFBC (85.4% versus 81.65%) due to two factors. First, the better fuel efficiency mentioned above contributes to this advantage. Second, the spent solids leaving the lowest combustion stage of the SCFBC are cooled by the incoming air, reducing heat loss with the spent solids. The SCFBC accomplishes the specified SO/sub 2/ removal with a significantly reduced amount of limestone adsorbent. The SCFBC achieved a sulfur capture efficiency of 81.6% with a calcium to sulfur ratio of 2.05, while the AFBC capture efficiency was 90% with a calcium to sulfur ratio of 3.5. The SCFBC has several other technical advantages over the AFBC. Stages of combustion air in the SCFBC can reduce NOx emissions to one-half to one-third of that achievable with the AFBC. The SCFBC achieves a higher volumetric heat release than the conventional AFBC by a factor of three to one. The SCFBC can achieve higher turndown ratios than the AFBC by changing fluidized bed depths to tailor heat transfer rates to the turned down condition. Turndown ratios of 7 to 1 are possible with the SCFBC compared with a ratio of 3 to 1 achievable in a single bed conventional AFBC. The capitol cost of the SCFBC is 24.0% lower than that of the AFBC and the annual operating cost is 7.4% lower.

  12. Staged combustion for reduced NO/sub x/ emissions from an atmospheric fluidized-bed combustor

    SciTech Connect (OSTI)

    Duqum, J.N.; Fortino, R.T.; Loudin, K.L.

    1989-06-01T23:59:59.000Z

    To reduce exhaust NO/sub x/ below existing levels in an atmospheric fluidized-bed combustor, two-stage combustion was studied on the 6' /times/ 6' (6 /times/ 6) atmospheric fluidized-bed combustion (AFBC) facility at the Babcock and Wilcox (B and W) Alliance, Ohio, Research Center. This report documents the tests and related numerical modeling. The two-stage testing was conducted with Pittsburgh No. 8 coal. NO/sub x/ was reduced to a minimum level of 132 ppM at the stack, or about 50% below baseline NO/sub x/ with overfire air (OFA). Combustion efficiency was maintained at 98% at these minimum NO/sub x/ conditions. Although acceptable sulfur capture was not maintained, tests with overbed fly ash recycle and higher OFA jet velocity indicated that sulfur capture can be brought to acceptable levels by improving freeboard mixing. Numerical modeling was investigated as a means of scaling the results of staged combustion from the 6 /times/ 6 AFBC facility to larger AFBC units. B and W's existing three-dimensional models for pulverized-coal combustion and NO/sub x/ formation and reduction were applied to the 6 /times/ 6 freeboard. Lagrangian particle transport models were found capable of predicting elutriation. Exit flue gas temperatures were well predicted, but internal freeboard temperatures were underpredicted. B and W's NO/sub x/ model under predicted reaction rates for fuel NO/sub x/ production and reduction. The OFA ports for this project were designed using mixing analysis without combustion. This type of analysis can help in the design of OFA ports for larger units such as Tennessee Valley Authority's 20-MW pilot-scale plant. However, additional computer code validation is required before combustion and NO/sub x/ analyses can be used for scale-up. 37 refs., 43 figs.

  13. Clean Energy Finance: Challenges and Opportunities of Early-Stage Energy Investing (Presentation)

    SciTech Connect (OSTI)

    Heap, D.; Pless, J.; Aieta, N.

    2013-12-01T23:59:59.000Z

    Characterized by a changing landscape and new opportunities, today's increasingly complex energy decision space will need innovative financing and investment models to appropriately assess risk and profitability. This report provides an overview of the current state of clean energy finance across the entire spectrum but with a focus on early stage investing, and it includes insights from investors across all investment classes. Further, this report aims to provide a roadmap with the mechanisms, limitations, and considerations involved in making successful investments by identifying risks, challenges, and opportunities in the clean energy sector.

  14. Evolution from Canonical to Millisecond Pulsar through the X-ray Accretion Stage

    E-Print Network [OSTI]

    Norman K. Glendenning; Fridolin Weber

    2000-10-17T23:59:59.000Z

    We model the evolution of canonical pulsars from the death line to millisecond pulsars through the X-ray neutron star stage of accretion from a low-mass companion. We trace this evolution in magnetic field strength starting at $B=10^{12}$ to $10^8$ G and in period of about 1 s to milliseconds. Important factors are accretion rate and the decay rate of the magnetic field. A broad swathe is traced in the $B-P$ plane according to the value of these factors, which represent different conditions of the binary pair. An important ingredient is the dependence of the stellar moment of inertia on rotation frequency (time).

  15. A study of heat pump fin staged evaporators under frosting conditions

    E-Print Network [OSTI]

    Yang, Jianxin

    2004-09-30T23:59:59.000Z

    the performance of fin-and-tube outdoor coils as well as the whole heat pump system. The objective of the experimental part of this study was to investigate the effects of the staging fin on the frost/defrost performance of heat pump outdoor coils under different... and additional energy is used to melt the frost off the evaporator, the defrosting process increases energy consumption and reduces the seasonal efficiency of the heat pump. Frost formation and the subsequent defrost process continues to be a source...

  16. The Lifetime Estimate for ACSR Single-Stage Splice Connector Operating at Higher Temperatures

    SciTech Connect (OSTI)

    Wang, Jy-An John [ORNL; Graziano, Joe [Tennessee Valley Authority (TVA); Chan, John [Electric Power Research Institute (EPRI)

    2011-01-01T23:59:59.000Z

    This paper is the continuation of Part I effort to develop a protocol of integrating analytical and experimental approaches to evaluate the integrity of a full tension single-stage splice connector (SSC) assembly during service at high operating temperature.1The Part II efforts are mainly focused on the thermal mechanical testing, thermal-cycling simulation and its impact on the effective lifetime of the SSC system. The investigation indicates that thermal cycling temperature and frequency, conductor cable tension loading, and the compressive residual stress field within a SSC system have significant impact on the SSC integrity and the associated effective lifetime.

  17. Methods of Determining the Optimum Stage of Maturity for Picking Green-Wrap Tomatoes. 

    E-Print Network [OSTI]

    Sorensen, H. B.

    1955-01-01T23:59:59.000Z

    . With high prices early in the season and a good demand for toma- toes, farmers started picking their tomatoes a little greener each year. Most tomatoes in Texas are now marketed in the "green-wrap" stage. The tomato fruit is considered mature while.... with a relative humidity of 58 to 60 percent. The storage facilities consisted of the chilled rooms operated by the Department of Agricultural Engineering. The boxes of toma- toes were placed on racks in the room to allow good circulation of air. T...

  18. Energy graphics: profiling a building in the pre-design stage

    SciTech Connect (OSTI)

    Kurtz, J.M.

    1982-05-01T23:59:59.000Z

    The design stage is the best time to improve building efficiency by considering site, orientation, landscaping, building shape, and windows in the early planning process. The Energy Graphics technique uses about 20 variables categorized under climate, building design, and occupant needs to get a rough estimate of building performance and identify potential problems and energy-saving opportunities before construction begins. The technique is simple to operate using a desktop computer to analyze internal heat gain and loss. The architect can make design changes on the basis of the computer graphs. 9 figures. (DCK)

  19. Two-stage fixed-bed gasifier with selectable middle gas off-take point

    DOE Patents [OSTI]

    Strickland, Larry D. (Morgantown, WV); Bissett, Larry A. (Morgantown, WV)

    1992-01-01T23:59:59.000Z

    A two-stage fixed bed coal gasifier wherein an annular region is in registry with a gasification zone underlying a devolatilization zone for extracting a side stream of high temperature substantially tar-free gas from the gasifier. A vertically displaceable skirt means is positioned within the gasifier to define the lower portion of the annular region so that vertical displacement of the skirt means positions the inlet into the annular region in a selected location within or in close proximity to the gasification zone for providing a positive control over the composition of the side stream gas.

  20. Non-linear Langevin model for the early-stage dynamics of electrospinning jets

    E-Print Network [OSTI]

    Lauricella, Marco; Pisignano, Dario; Succi, Sauro

    2015-01-01T23:59:59.000Z

    We present a non-linear Langevin model to investigate the early-stage dynamics of electrified polymer jets in electrospinning experiments. In particular, we study the effects of air drag force on the uniaxial elongation of the charged jet, right after ejection from the nozzle. Numerical simulations show that the elongation of the jet filament close to the injection point is significantly affected by the non-linear drag exerted by the surrounding air. These result provide useful insights for the optimal design of current and future electrospinning experiments.

  1. Direct radiolabeling of antibody against stage specific embryonic antigen for diagnostic imaging

    DOE Patents [OSTI]

    Rhodes, B.A.

    1994-09-13T23:59:59.000Z

    Antibodies against stage specific embryonic antigen-1 is radiolabeled by direct means with a radionuclide for use in detection of occult abscess and inflammation. Radiolabeling is accomplished by partial reduction of the disulfide bonds of the antibody using Sn(II), or using other reducing agents followed by the addition of Sn(II), removal of excess reducing agent and reduction by-products, and addition of a specified amount of radionuclide reducing agent, such as stannous tartrate. The resulting product may be stored frozen or lyophilized, with radiolabeling accomplished by the addition of the radionuclide. No Drawings

  2. A Multi-Stage Wear Model for Grid-to-Rod Fretting of Nuclear Fuel Rods

    SciTech Connect (OSTI)

    Blau, Peter Julian [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    The wear of fuel rod cladding against the supporting structures in the cores of pressurized water nuclear reactors (PWRs) is an important and potentially costly tribological issue. Grid-to-rod fretting (GTRF), as it is known, involves not only time-varying contact conditions, but also elevated temperatures, flowing hot water, aqueous tribo-corrosion, and the embrittling effects of neutron fluences. The multi-stage, closed-form analytical model described in this paper relies on published out-of-reactor wear and corrosion data and a set of simplifying assumptions to portray the conversion of frictional work into wear depth. The cladding material of interest is a zirconium-based alloy called Zircaloy-4, and the grid support is made of a harder and more wear-resistant material. Focus is on the wear of the cladding. The model involves an incubation stage, a surface oxide wear stage, and a base alloy wear stage. The wear coefficient, which is a measure of the efficiency of conversion of frictional work into wear damage, can change to reflect the evolving metallurgical condition of the alloy. Wear coefficients for Zircaloy-4 and for a polyphase zirconia layer were back-calculated for a range of times required to wear to a critical depth. Inputs for the model, like the friction coefficient, are taken from the tribology literature in lieu of in-reactor tribological data. Concepts of classical fretting were used as a basis, but are modified to enable the model to accommodate the complexities of the PWR environment. Factors like grid spring relaxation, pre-oxidation of the cladding, multiple oxide phases, gap formation, impact, and hydrogen embrittlement are part of the problem definition but uncertainties in their relative roles limits the ability to validate the model. Sample calculations of wear depth versus time in the cladding illustrate how GTRF wear might occur in a discontinuous fashion during months-long reactor operating cycles. A means to account for grid/rod gaps and repetitive impact effects on GTRF wear is proposed

  3. Early Stage R&D Available for Partnerships - Energy Innovation Portal

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

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

  4. First and second order approximations to stage numbers in multicomponent enrichment cascades

    SciTech Connect (OSTI)

    Scopatz, A. [University of Chicago, 5754 S. Ellis Ave, Chicago, IL, 60637 (United States)

    2013-07-01T23:59:59.000Z

    This paper describes closed form, Taylor series approximations to the number product stages in a multicomponent enrichment cascade. Such closed form approximations are required when a symbolic, rather than a numeric, algorithm is used to compute the optimal cascade state. Both first and second order approximations were implemented. The first order solution was found to be grossly incorrect, having the wrong functional form over the entire domain. On the other hand, the second order solution shows excellent agreement with the 'true' solution over the domain of interest. An implementation of the symbolic, second order solver is available in the free and open source PyNE library. (authors)

  5. Unusual association of alveolar rhabdomyosarcoma with pancreatic metastasis: emerging role of PET-CT in tumor staging

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    Christie R, Daw NC et al ( 2005) PET/CT in the evaluation ofComparative study of FDG PET/CT and conventional imaging inet al (2009) Diagnostic value of PET/CT for the staging and

  6. www.seedco.in Presentation of Seedcoin, the world's first seed-stage virtual incubator for Bitcoin startups

    E-Print Network [OSTI]

    Gesbert, David

    www.seedco.in Presentation of Seedcoin, the world's first seed-stage virtual incubator for Bitcoin, the disruptive power of Bitcoin and cryptocurrencies and their potential applications in our everyday lives

  7. The Multi-Stage Investment Timing Game in Offshore Petroleum Production: Preliminary results from an econometric model

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    2007-01-01T23:59:59.000Z

    Game in O?shore Petroleum Production: Preliminary resultsgame in o?shore petroleum production that ensues on wildcatLin 1 Introduction Petroleum production is a multi-stage

  8. Design of a demand driven multi-item-multi-stage manufacturing system : production scheduling, WIP control and Kanban implementation

    E-Print Network [OSTI]

    Zhou, Xiaoyu, M. Eng Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    The project is conducted in a multi-item-multi-stage manufacturing system with high volume products. The objectives are to optimize the inventory structure and improve production scheduling process. The stock building plan ...

  9. Effects of fish oil and butyrate on diet-mediated apoptosis at the promotion stage of colon carcinogenesis 

    E-Print Network [OSTI]

    Newton, Anne Henry

    2005-11-01T23:59:59.000Z

    We have previously shown that dietary fish oil and the fiber pectin protect against colon cancer in rats by increasing apoptosis induced by reactive oxygen species (ROS) at the initiation stage of tumorigenesis. We hypothesized that fish oil would...

  10. THE SECOND STAGE OF FERMI@ELETTRA: A SEEDED FEL IN THE SOFT X-RAY SPECTRAL RANGE

    E-Print Network [OSTI]

    Allaria, E.

    2010-01-01T23:59:59.000Z

    OF FERMI@ELETTRA: A SEEDED FEL IN THE SOFT X-RAY SPECTRALTrieste, Italy. Abstract The second stage of the FERMI FEL,named FEL-2, is based on the principle of high-gain harmonic

  11. Planning electricity transmission to accommodate renewables: Using two-stage programming to evaluate flexibility and the cost of disregarding uncertainty

    E-Print Network [OSTI]

    van der Weijde, Adriaan Hendrik; Hobbs, Benjamin F.

    2011-01-31T23:59:59.000Z

    We develop a stochastic two-stage optimisation model that captures the multistage nature of electricity transmission planning under uncertainty and apply it to a stylised representation of the Great Britain (GB) network. In our model, a proactive...

  12. Functional patterns of microbial communities of rhizospheric soils across the development stages of a young mangrove in French Guiana

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -chemical characteristics of rhizospheric soils were studied during the process of mudflat colonization by mangrove and micro-phytobenthic colonization of mudflat. This stage, characterized by low total organic carbon (TOC

  13. Assessment and enhancement of decision-making models used for the pre-development stages of office developments in turkey

    E-Print Network [OSTI]

    Civan, Isilay

    2007-09-17T23:59:59.000Z

    deficiencies in these applied procedures and that they lack the necessary and important components of project feasibility analysis, which are basically the market and financial feasibility analysis, that needs to be applied in the pre-development stage...

  14. The Multi-Stage Investment Timing Game in Offshore Petroleum Production: Preliminary results from an econometric model

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    2007-01-01T23:59:59.000Z

    to understand the geology of oil production. Shelby Gerking,real options theory. Oil production is a multi-stage processinnovates is that on oil production. My work makes several

  15. To what extent is social media exposure correlated with financial performance for early stage digital consumer-facing startups?

    E-Print Network [OSTI]

    Genre, Solene

    2014-01-01T23:59:59.000Z

    It is very hard to identify and evaluate very early stage investment opportunities in disruptive digital consumer-facing startups as they usually don't have any meaningful revenue data yet. However, these growing startups ...

  16. Novel use of a radiolabelled antibody against stage specific embryonic antigen for the detection of occult abscesses in mammals

    DOE Patents [OSTI]

    Thakur, M.L.

    1990-04-17T23:59:59.000Z

    The invention discloses improved reagents containing antibodies against stage specific embryonic antigen-1 antibodies and improved methods for detection of occult abscess and inflammation using the improved reagents. No Drawings

  17. Impact of the CE mark approval on exit opportunities and validation for early stage medical device companies

    E-Print Network [OSTI]

    Kothari, Ashish (Ashish Shrikant)

    2011-01-01T23:59:59.000Z

    The aim of this thesis was to look at the impact of acquiring the CE marking approval on the outcome of early stage medical device companies, specifically its impact on strategic acquisition opportunities and on valuation. ...

  18. Provisioning a Multi-Tiered Data Staging Area for Extreme-Scale Machines

    SciTech Connect (OSTI)

    Prabhakar, Ramya A [ORNL; Vazhkudai, Sudharshan S [ORNL; Kim, Youngjae [ORNL; Butt, Ali R [Virginia Polytechnic Institute and State University (Virginia Tech); Li, Min [Virginia Polytechnic Institute and State University (Virginia Tech); Kandemir, Mahmut [Pennsylvania State University

    2011-01-01T23:59:59.000Z

    Massively parallel scientific applications, running on extreme-scale supercomputers, produce hundreds of terabytes of data per run, driving the need for storage solutions to improve their I/O performance. Traditional parallel file systems (PFS) in high performance computing (HPC) systems are unable to keep up with such high data rates, creating a storage wall. In this work, we present a novel multi-tiered storage architecture comprising hybrid node-local resources to construct a dynamic data staging area for extreme-scale machines. Such a staging ground serves as an impedance matching device between applications and the PFS. Our solution combines diverse resources (e.g., DRAM, SSD) in such a way as to approach the performance of the fastest component technology and the cost of the least expensive one. We have developed an automated provisioning algorithm that aids in meeting the checkpointing performance requirement of HPC applications, by using a least-cost storage configuration. We evaluate our approach using both an implementation on a large scale cluster and a simulation driven by six-years worth of Jaguar supercomputer job-logs, and show that our approach, by choosing an appropriate storage configuration, achieves 41.5% cost savings with only negligible impact on performance.

  19. Post-Tanner stages of droplet spreading: the energy balance approach revisited

    E-Print Network [OSTI]

    Serguei Mechkov; Anne-Marie Cazabat; Gleb Oshanin

    2009-09-10T23:59:59.000Z

    The spreading of a circular liquid drop on a solid substrate can be described by the time evolution of its base radius R(t). In complete wetting the quasistationary regime (far away from initial and final transients) typically obeys the so-called Tanner law, with R t^alpha_T, alpha_T=1/10. Late-time spreading may differ significantly from the Tanner law: in some cases the drop does not thin down to a molecular film and instead reaches an equilibrium pancake-like shape; in other situations, as revealed by recent experiments with spontaneously spreading nematic crystals, the growth of the base radius accelerates after the Tanner stage. Here we demonstrate that these two seemingly conflicting trends can be reconciled within a suitably revisited energy balance approach, by taking into account the line tension contribution to the driving force of spreading: a positive line tension is responsible for the formation of pancake-like structures, whereas a negative line tension tends to lengthen the contact line and induces an accelerated spreading (a transition to a faster power law for R(t) than in the Tanner stage).

  20. Electric and hybrid electric vehicles: A technology assessment based on a two-stage Delphi study

    SciTech Connect (OSTI)

    Vyas, A.D.; Ng, H.K.; Santini, D.J.; Anderson, J.L.

    1997-12-01T23:59:59.000Z

    To address the uncertainty regarding future costs and operating attributes of electric and hybrid electric vehicles, a two stage, worldwide Delphi study was conducted. Expert opinions on vehicle attributes, current state of the technology, possible advancements, costs, and market penetration potential were sought for the years 2000, 2010, and 2020. Opinions related to such critical components as batteries, electric drive systems, and hybrid vehicle engines, as well as their respective technical and economic viabilities, were also obtained. This report contains descriptions of the survey methodology, analytical approach, and results of the analysis of survey data, together with a summary of other factors that will influence the degree of market success of electric and hybrid electric vehicle technologies. Responses by industry participants, the largest fraction among all the participating groups, are compared with the overall responses. An evaluation of changes between the two Delphi stages is also summarized. An analysis of battery replacement costs for various types is summarized, and variable operating costs for electric and hybrid vehicles are compared with those of conventional vehicles. A market penetration analysis is summarized, in which projected market shares from the survey are compared with predictions of shares on the basis of two market share projection models that use the cost and physical attributes provided by the survey. Finally, projections of market shares beyond the year 2020 are developed by use of constrained logit models of market shares, statistically fitted to the survey data.

  1. FINAL DESIGN OF ILC RTML EXTRACTION LINE FOR SINGLE STAGE BUNCH COMPRESSOR

    SciTech Connect (OSTI)

    Seletskiy, S.; Solyak, N.

    2011-03-28T23:59:59.000Z

    The use of single stage bunch compressor (BC) in the International Linear Collider (ILC) Damping Ring to the Main Linac beamline (RTML) requires new design for the extraction line (EL). The EL located downstream of the BC will be used for both an emergency abort dumping of the beam and the tune-up continuous train-by-train extraction. It must accept both compressed and uncompressed beam with energy spread of 3.54% and 0.15% respectively. In this paper we report the final design that allowed minimizing the length of such extraction line while offsetting the beam dumps from the main line by 5m distance required for acceptable radiation level in the service tunnel. Proposed extraction line can accommodate beams with different energy spreads at the same time providing the beam size suitable for the aluminum ball dump window. We described the final design of the ILC RTML extraction line located downstream of the new single-stage bunch compressor. The extraction line is only 24m long and is capable of accepting and transmitting 220kW of beam power. The EL can be used for both fast intra-train and continual extraction, and is capable of accepting both 0.15% and 3.54% energy spread beams at 5MeV and 4.37MeV respectively.

  2. Technical area status report for second-stage destruction and offgas treatment

    SciTech Connect (OSTI)

    French, N.B. [Sandia National Labs., Livermore, CA (United States); Dalton, J.D. [Science Applications International Corp., Idaho Falls, ID (United States); Vavruska, J. [Equinox Ltd., Santa Fe, NM (United States)

    1994-08-01T23:59:59.000Z

    This report was sponsored by the Mixed Waste Integrated Program (MWIP), which was established by the Department of Energy (DOE), Office of Environmental Restoration and Waste Management (EM), Office of Technology Development (OTD). DOE/EM carries the charter to direct and coordinate waste management and site remediation throughout the DOE complex. Within EM, the OTD established the MWIP to identify and develop new technologies for treatment of DOE low-level mixed waste. This report represents the second TASR for the Second-Stage Destruction and Offgas Treatment technical area. This TASR updates technology information, a design methodology for air pollution control systems for mixed waste treatment, and technology development needs for DOE/EM. The TASRs form the basis of a technology development program that addresses the highest priority DOE environmental needs and is coordinated with other technology development efforts both inside and outside DOE. The main functions of the second-stage destruction and offgas treatment system are to treat the gaseous effluent from the primary treatment process to acceptable levels for release to the atmosphere. Specific functions include (1) destruction of volatile organics; (2) capture of particulate matter; (3) capture of volatile metals; (4) capture and control of volatile, condensed-phase, and solid-phase radionuclides; (5) control of acid gases; (6) NO{sub x} abatement; and (7) gas cooling and reheating as required to perform these functions.

  3. Vertical distribution of larval stages of the horn fly, Haematobia irritans irritans (L.), in relation to manure pat temperature gradients

    E-Print Network [OSTI]

    March, Philip Anderson

    1981-01-01T23:59:59.000Z

    VERTICAL DISTRISUTION OF LARVAL STAGES OF THE HORN FLY, HAEMATOBIA IRRITANS IRRITANS (L. ), IN RELATION TO MANURE PAT TEMPERATURE GRADIENTS A Thesis by PHILIP ANDERSON MARCH Submitted to the Graduate College of Texas AijM University... in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1981 Major Subject: Entomology VERTICAL DISTRIBUTION OF LARVAL STAGES OF THE HORN FLY, HAEMATOBIA IRRITANS IRRITANS (L. ), IN RELATION TO MANURE PAT TEMPERATURE GRADIENTS...

  4. Variable-ambient scanning stage for a laser scanning confocal microscope D. J. Sirbuly, J. P. Schmidt, M. D. Mason, M. A. Summers, and S. K. Burattoa)

    E-Print Network [OSTI]

    Buratto, Steve

    Variable-ambient scanning stage for a laser scanning confocal microscope D. J. Sirbuly, J. P A variable-ambient scanning stage for a laser scanning confocal microscope was designed and tested. The stage attempts to remove deleterious species such as oxygen in laser scanning confocal microscopy experiments

  5. New leading/trailing edge modulation strategies for two-stage AC/DC PFC adapters to reduce DC-link capacitor ripple current 

    E-Print Network [OSTI]

    Sun, Jing

    2007-09-17T23:59:59.000Z

    AC/DC adapters mostly employ two-stage topology: Power Factor Correction (PFC) pre-regulation stage followed by an isolated DC/DC converter stage. Low power AC/DC adapters require a small size to be competitive. Among their components, the bulk DC...

  6. Removal of oxides of nitrogen from gases in multi-stage coal combustion

    DOE Patents [OSTI]

    Mollot, D.J.; Bonk, D.L.; Dowdy, T.E.

    1998-01-13T23:59:59.000Z

    Polluting NO{sub x} gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO{sub x} gases are removed is directed to introducing NO{sub x}-free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized bed reactor is also controlled to obtain desired stoichiometry in the first, fuel-rich zone of the topping combustor. 2 figs.

  7. Removal of oxides of nitrogen from gases in multi-stage coal combustion

    DOE Patents [OSTI]

    Mollot, Darren J. (Morgantown, WV); Bonk, Donald L. (Louisville, OH); Dowdy, Thomas E. (Orlando, FL)

    1998-01-01T23:59:59.000Z

    Polluting NO.sub.x gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO.sub.x gases are removed is directed to introducing NO.sub.x -free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized bed reactor is also controlled to obtain desired stoichiometry in the first, fuel-rich zone of the topping combustor.

  8. Policy Building Blocks: Helping Policymakers Determine Policy Staging for the Development of Distributed PV Markets: Preprint

    SciTech Connect (OSTI)

    Doris, E.

    2012-04-01T23:59:59.000Z

    There is a growing body of qualitative and a limited body of quantitative literature supporting the common assertion that policy drives development of clean energy resources. Recent work in this area indicates that the impact of policy depends on policy type, length of time in place, and economic and social contexts of implementation. This work aims to inform policymakers about the impact of different policy types and to assist in the staging of those policies to maximize individual policy effectiveness and development of the market. To do so, this paper provides a framework for policy development to support the market for distributed photovoltaic systems. Next steps include mathematical validation of the framework and development of specific policy pathways given state economic and resource contexts.

  9. TWO-STAGE FRAGMENTATION FOR CLUSTER FORMATION: ANALYTICAL MODEL AND OBSERVATIONAL CONSIDERATIONS

    SciTech Connect (OSTI)

    Bailey, Nicole D.; Basu, Shantanu, E-mail: nwityk@uwo.ca, E-mail: basu@uwo.ca [Department of Physics and Astronomy, University of Western Ontario, 1151 Richmond Street, London, ON N6A 3K7 (Canada)

    2012-12-10T23:59:59.000Z

    Linear analysis of the formation of protostellar cores in planar magnetic interstellar clouds shows that molecular clouds exhibit a preferred length scale for collapse that depends on the mass-to-flux ratio and neutral-ion collision time within the cloud. We extend this linear analysis to the context of clustered star formation. By combining the results of the linear analysis with a realistic ionization profile for the cloud, we find that a molecular cloud may evolve through two fragmentation events in the evolution toward the formation of stars. Our model suggests that the initial fragmentation into clumps occurs for a transcritical cloud on parsec scales while the second fragmentation can occur for transcritical and supercritical cores on subparsec scales. Comparison of our results with several star-forming regions (Perseus, Taurus, Pipe Nebula) shows support for a two-stage fragmentation model.

  10. Influence of gas compression on flame acceleration in the early stage of burning in tubes

    E-Print Network [OSTI]

    Valiev, Damir; Kuznetsov, Mikhail; Eriksson, Lars-Erik; Law, Chung K; Bychkov, Vitaly

    2012-01-01T23:59:59.000Z

    The mechanism of finger flame acceleration at the early stage of burning in tubes has been observed experimentally by Clanet and Searby [Combust. Flame 105: 225 (1996)] for slow propane-air flames, and elucidated analytically and computationally by Bychkov et al. [Combust. Flame 150: 263 (2007)] in the limit of an incompressible flow. We analytically, experimentally and computationally study herein the finger flame acceleration for fast burning flames, when the gas compressibility assumes an important role. Specifically, we have developed a theory through small Mach number expansion up to the first-order terms, demonstrating that gas compression reduces the acceleration rate and thereby moderates the finger flame acceleration noticeably. We have also conducted experiments for hydrogen-oxygen mixtures with considerable initial values of the Mach number, showing finger flame acceleration with the acceleration rate much smaller than those obtained previously for hydrocarbon flames. Furthermore, we have performed...

  11. Effects of Velocity Correlation on Early Stage of Free Cooling Process of Inelastic Hard Sphere System

    E-Print Network [OSTI]

    Ryo Kawahara; Hiizu Nakanishi

    2003-10-29T23:59:59.000Z

    The free cooling process in the inelastic hard sphere system is studied by analysing the data from large scale molecular dynamics simulations on a three dimensional system. The initial energy decay, the velocity distribution function, and the velocity correlation functions are calculated to be compared with theoretical predictions. The energy decay rate in the homogeneous cooling state is slightly but distinctively smaller than that expected from the independent collision assumption. The form of the one particle velocity distribution is found not to be stationary. These contradict to the predictions of the kinetic theory based on the Enskog-Boltzmann equation and suggest that the velocity correlation is already important in the early stage of homogeneous cooling state. The energy decay rate is analysed in terms of the velocity correlation.

  12. Review of input stages used in front end electronics for particle detectors

    E-Print Network [OSTI]

    Kaplon, J

    2015-01-01T23:59:59.000Z

    In this paper we present noise analysis of the input stages most commonly used in front end electronics for particle detectors. Analysis shows the calculation of the input referenced noise related to the active devices. It identifies the type, parallel or series, of the equivalent noise sources related to the input transistors, which is the important input for the further choice of the signal processing method. Moreover we calculate the input impedance of amplifiers employed in applications where the particle detector is connected to readout electronics by means of transmission line. We present schematics, small signal models,a complete set of equations, and results of the major steps of calculations for all discussed circuits.

  13. Application of the theta method to distillation columns where one or more reactions occur per stage

    E-Print Network [OSTI]

    Izarraraz, Alicia

    1979-01-01T23:59:59.000Z

    0 ctl a I0 '0 cd dl a Sl cd d! IO cc cd Z a + 27 jA j jA jB j jC jC jD (33) where r is the rate of disappearence of component A in males per unit time per unit volume, C is the concentration of component i in the liquid phase... liquid density of the liquid phase on plate j. L Substituting Equation (34) into Equation (33) gives the rate of reaction, L 2 jA j j j jA jB j jC jD (35) Denoting the hold-up volume of the liquid on stage j by U, the number L of mules of A...

  14. Improved DESI-MS Performance using Edge Sampling and aRotational Sample Stage

    SciTech Connect (OSTI)

    Kertesz, Vilmos [ORNL; Van Berkel, Gary J [ORNL

    2008-01-01T23:59:59.000Z

    The position of the surface to be analyzed relative to the sampling orifice or capillary into the mass spectrometer has been known to dramatically affect the observed signal levels in desorption electrospray ionization mass spectrometry (DESIMS). In analyses of sample spots on planar surfaces, DESI-MS signal intensities as much as five times greater were routinely observed when the bottom of the sampling capillary was appropriately positioned beneath the surface plane ( edge sampling") compared to when the capillary just touched the surface. To take advantage of the optimum "edge sampling" geometry and to maximize the number of samples that could be analyzed in this configuration, a rotational sample stage was integrated into a typical DESI-MS setup. The rapid quantitative determination of caffeine in two diet sport drinks (Diet Turbo Tea, Speed Stack Grape) spiked with an isotopically labeled internal standard demonstrated the utility of this approach.

  15. The Integrity of ACSR Full Tension Single-Stage Splice Connector at Higher Operation Temperature

    SciTech Connect (OSTI)

    Wang, Jy-An John [ORNL; Lara-Curzio, Edgar [ORNL; King Jr, Thomas J [ORNL

    2008-10-01T23:59:59.000Z

    Due to increases in power demand and limited investment in new infrastructure, existing overhead power transmission lines often need to operate at temperatures higher than those used for the original design criteria. This has led to the accelerated aging and degradation of splice connectors. It is manifested by the formation of hot-spots that have been revealed by infrared imaging during inspection. The implications of connector aging is two-fold: (1) significant increases in resistivity of the splice connector (i.e., less efficient transmission of electricity) and (2) significant reductions in the connector clamping strength, which could ultimately result in separation of the power transmission line at the joint. Therefore, the splice connector appears to be the weakest link in electric power transmission lines. This report presents a protocol for integrating analytical and experimental approaches to evaluate the integrity of full tension single-stage splice connector assemblies and the associated effective lifetime at high operating temperature.

  16. Systems and methods for cylindrical hall thrusters with independently controllable ionization and acceleration stages

    DOE Patents [OSTI]

    Diamant, Kevin David; Raitses, Yevgeny; Fisch, Nathaniel Joseph

    2014-05-13T23:59:59.000Z

    Systems and methods may be provided for cylindrical Hall thrusters with independently controllable ionization and acceleration stages. The systems and methods may include a cylindrical channel having a center axial direction, a gas inlet for directing ionizable gas to an ionization section of the cylindrical channel, an ionization device that ionizes at least a portion of the ionizable gas within the ionization section to generate ionized gas, and an acceleration device distinct from the ionization device. The acceleration device may provide an axial electric field for an acceleration section of the cylindrical channel to accelerate the ionized gas through the acceleration section, where the axial electric field has an axial direction in relation to the center axial direction. The ionization section and the acceleration section of the cylindrical channel may be substantially non-overlapping.

  17. Response to fission neutron irradiation of spermatogonial stem cells in different stages of the cycle of the siminiferous epithelium

    SciTech Connect (OSTI)

    van Beek, M.E.A.B.; Davids, J.A.G.; van de Kant, H.J.G.; Rooij, D.G.

    1984-03-01T23:59:59.000Z

    Mice were irradiated with 1 Gy of fission neutrons. At intervals up to 15 days after irradiation undifferentiated spermatogonia were counted in whole mounts of seminiferous tubules in up to eight stages of the epithelial cycle. From Day 6 onward lower numbers of spermatogonia were found in the area which were in stages IV-VII during irradiation than in those which were in stages IX-II. Minimal numbers in the former area were two to six times lower than those in the latter one. Areas whch were in stage III or VIII gave intermediate values. It is concluded that the epithelial cycle can be divided into two parts with a different response to irradiation, that begin or end in stages III and VIII. Part III-VIII and part VIII-III comprise 45 and 55% of the epithelial cycle, respectively. In part VIII-III control levels were found again at Day 15, while in part III-VIII spermatogonial numbers were still very low. In controls it was found that part VIII-III corresponds to a period of high proliferative activity of the stem cells, while in part III-VIII the proliferative activity is very low. This may affect their radiosensitivity and/or their proliferative behavior after irradiation, resulting in different spermatogonial numbers in the two parts of the epithelial cycle.

  18. The Role of Vaginal Brachytherapy in the Treatment of Surgical Stage I Papillary Serous or Clear Cell Endometrial Cancer

    SciTech Connect (OSTI)

    Barney, Brandon M., E-mail: barney.brandon@mayo.edu [Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States); Petersen, Ivy A. [Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States)] [Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States); Mariani, Andrea; Dowdy, Sean C.; Bakkum-Gamez, Jamie N. [Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota (United States)] [Division of Gynecologic Surgery, Mayo Clinic, Rochester, Minnesota (United States); Haddock, Michael G. [Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States)] [Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota (United States)

    2013-01-01T23:59:59.000Z

    Objectives: The optimal adjuvant therapy for International Federation of Gynecology and Obstetrics (FIGO) stage I papillary serous (UPSC) or clear cell (CC) endometrial cancer is unknown. We report on the largest single-institution experience using adjuvant high-dose-rate vaginal brachytherapy (VBT) for surgically staged women with FIGO stage I UPSC or CC endometrial cancer. Methods and Materials: From 1998-2011, 103 women with FIGO 2009 stage I UPSC (n=74), CC (n=21), or mixed UPSC/CC (n=8) endometrial cancer underwent total abdominal hysterectomy with bilateral salpingo-oophorectomy followed by adjuvant high-dose-rate VBT. Nearly all patients (n=98, 95%) also underwent extended lymph node dissection of pelvic and paraortic lymph nodes. All VBT was performed with a vaginal cylinder, treating to a dose of 2100 cGy in 3 fractions. Thirty-five patients (34%) also received adjuvant chemotherapy. Results: At a median follow-up time of 36 months (range, 1-146 months), 2 patients had experienced vaginal recurrence, and the 5-year Kaplan Meier estimate of vaginal recurrence was 3%. The rates of isolated pelvic recurrence, locoregional recurrence (vaginal + pelvic), and extrapelvic recurrence (including intraabdominal) were similarly low, with 5-year Kaplan-Meier estimates of 4%, 7%, and 10%, respectively. The estimated 5-year overall survival was 84%. On univariate analysis, delivery of chemotherapy did not affect recurrence or survival. Conclusions: VBT is effective at preventing vaginal relapse in women with surgical stage I UPSC or CC endometrial cancer. In this cohort of patients who underwent comprehensive surgical staging, the risk of isolated pelvic or extrapelvic relapse was low, implying that more extensive adjuvant radiation therapy is likely unnecessary.

  19. Staged, High-Pressure Oxy-Combustion Technology: Development and Scale-Up

    SciTech Connect (OSTI)

    Axelbaum, Richard; Xia, Fei; Gopan, Akshay; Kumfer, Benjamin

    2014-09-30T23:59:59.000Z

    Washington University in St. Louis and its project partners are developing a unique pressurized oxy-combustion process that aims to improve efficiency and costs by reducing the recycling of flue gas to near zero. Normally, in the absence of recycled flue gas or another inert gas, combustion of fuel and oxygen results in a dramatic increase in temperature of the combustion products and radiant energy, as compared to combustion in air. High heat flux to the boiler tubes may result in a tube surface temperatures that exceed safe operating limits. In the Staged Pressurized Oxy-Combustion (SPOC) process, this problem is addressed by staging the delivery of fuel and by novel combustion design that allows control of heat flux. In addition, the main mode of heat transfer to the steam cycle is by radiation, as opposed to convection. Therefore, the requirement for recycling large amounts of flue gas, for temperature control or to improve convective heat transfer, is eliminated, resulting in a reduction in auxiliary loads. The following report contains a detailed summary of scientific findings and accomplishments for the period of Oct. 1, 2013 to Sept 30, 2014. Results of ASPEN process and CFD modelling activities aimed at improving the SPOC process and boiler design are presented. The effects of combustion pressure and fuel moisture on the plant efficiency are discussed. Combustor pressure is found to have only a minor impact beyond 16 bar. For fuels with moisture content greater than approx 30%, e.g. coal/water slurries, the amount of latent heat of condensation exceeds that which can be utilized in the steam cycle and plant efficiency is reduced significantly. An improved boiler design is presented that achieves a more uniform heat flux profile. In addition, a fundamental study of radiation in high-temperature, high-pressure, particle-laden flows is summarized which provides a more complete understanding of heat transfer in these unusual conditions and to allow for optimization. The results reveal that for the SPOC design, absorption and emission due to particles is the dominant factor for determining the wall heat flux. The mechanism of “radiative trapping” of energy within the high-temperature flame region and the approach to utilizing this mechanism to control wall heat flux are described. This control arises, by design, from the highly non-uniform (non-premixed) combustion characteristics within the SPOC boiler, and the resulting gradients in temperature and particle concentration. Finally, a simple method for estimating the wall heat flux in pressurized combustion systems is presented.

  20. On the interplay effects with proton scanning beams in stage III lung cancer

    SciTech Connect (OSTI)

    Li, Yupeng [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and Applied Research, Varian Medical Systems, Palo Alto, California 94304 (United States)] [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and Applied Research, Varian Medical Systems, Palo Alto, California 94304 (United States); Kardar, Laleh; Liao, Li; Lim, Gino [Department of Industrial Engineering, The University of Houston, Houston, Texas 77204 (United States)] [Department of Industrial Engineering, The University of Houston, Houston, Texas 77204 (United States); Li, Xiaoqiang; Li, Heng; Zhu, Ronald X.; Sahoo, Narayan; Gillin, Michael; Zhang, Xiaodong, E-mail: xizhang@mdanderson.org [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)] [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States); Cao, Wenhua [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and Department of Industrial Engineering, The University of Houston, Houston, Texas 77204 (United States)] [Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 and Department of Industrial Engineering, The University of Houston, Houston, Texas 77204 (United States); Chang, Joe Y.; Liao, Zhongxing; Komaki, Ritsuko; Cox, James D. [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)] [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030 (United States)

    2014-02-15T23:59:59.000Z

    Purpose: To assess the dosimetric impact of interplay between spot-scanning proton beam and respiratory motion in intensity-modulated proton therapy (IMPT) for stage III lung cancer. Methods: Eleven patients were sampled from 112 patients with stage III nonsmall cell lung cancer to well represent the distribution of 112 patients in terms of target size and motion. Clinical target volumes (CTVs) and planning target volumes (PTVs) were defined according to the authors' clinical protocol. Uniform and realistic breathing patterns were considered along with regular- and hypofractionation scenarios. The dose contributed by a spot was fully calculated on the computed tomography (CT) images corresponding to the respiratory phase that the spot is delivered, and then accumulated to the reference phase of the 4DCT to generate the dynamic dose that provides an estimation of what might be delivered under the influence of interplay effect. The dynamic dose distributions at different numbers of fractions were compared with the corresponding 4D composite dose which is the equally weighted average of the doses, respectively, computed on respiratory phases of a 4DCT image set. Results: Under regular fractionation, the average and maximum differences in CTV coverage between the 4D composite and dynamic doses after delivery of all 35 fractions were no more than 0.2% and 0.9%, respectively. The maximum differences between the two dose distributions for the maximum dose to the spinal cord, heart V40, esophagus V55, and lung V20 were 1.2 Gy, 0.1%, 0.8%, and 0.4%, respectively. Although relatively large differences in single fraction, correlated with small CTVs relative to motions, were observed, the authors' biological response calculations suggested that this interfractional dose variation may have limited biological impact. Assuming a hypofractionation scenario, the differences between the 4D composite and dynamic doses were well confined even for single fraction. Conclusions: Despite the presence of interplay effect, the delivered dose may be reliably estimated using the 4D composite dose. In general the interplay effect may not be a primary concern with IMPT for lung cancers for the authors' institution. The described interplay analysis tool may be used to provide additional confidence in treatment delivery.

  1. High temperature energy conversion for the Integrated Solar Upper Stage (ISUS)

    SciTech Connect (OSTI)

    Ramalingam, M.L. [UES, Inc., Dayton, OH (United States); Lamp, T.R. [Wright Lab., Wright Patterson AFB, OH (United States); Jacox, M.; Kennedy, F. [Phillips Lab., Kirtland AFB, NM (United States)

    1996-12-31T23:59:59.000Z

    Preliminary studies were conducted to assess the benefits of the Integrated Solar Upper Stage (ISUS) concept and key components including high temperature thermionic converters, have been tested and evaluated. Advanced radiatively coupled heat pipe cooled thermionic converters with rhenium and tungsten emitters were characterized individually for integration in a modular power unit. The converter with the tungsten emitter was performance mapped in the temperature range of 1,750 K to 2,400 K in order to conform to the ISUS requirements. Higher off-design temperatures yielded power densities as high as 12 watts/sq. cm. in the cesium pressure range of 4 to 9 torr. The converter with the rhenium emitter was tested in the temperature range of 1,575 K to 1,950 K and produced 10.5 watts/sq. cm. at the highest temperature. Dynamic switching characteristics were also measured to evaluate the possibility of interfacing a pulse width modulated (PWM) power regulator directly to a thermionic source.

  2. Assessment of a multi-stage underwater vehicle concept using a fossil-fuel Stirling engine

    SciTech Connect (OSTI)

    Reader, G.T.; Potter, I.J. [Univ. of Calgary, Alberta (Canada). Dept. of Mechanical Engineering

    1995-12-31T23:59:59.000Z

    The Stirling Engine because of its inherent closed-cycle operation can be readily modified to work in an airless environment even if the primary source of energy is a fossil fuel. Thus, Stirling engines are well suited for use in the underwater environment and have been operated successfully in manned military submarines since the early 1980s. In recent years fossil fueled Stirling systems have been also proposed for use in small unmanned underwater vehicles (UUVs). However, in this case the need to carry an onboard oxygen supply in a very confined space has presented a number of design difficulties. These are identified in the paper. However, if the oxidant supply to the engine is provided by the membrane extraction of dissolved oxygen from seawater and/or disposable fuel/oxidant pods are used then the UUV Stirling system becomes more attractive. If this latter concept is extended to include multi-stage vehicles then it can be shown that fossil fueled Stirlings could also be put to effective use in long range-long endurance underwater vehicular operations.

  3. CO{sub 2} EOR starts in late stage of waterflood

    SciTech Connect (OSTI)

    NONE

    1996-07-08T23:59:59.000Z

    The Postle field carbon dioxide flood marks the first time anyone in the industry has attempted a major CO{sub 2} enhanced oil recovery EOR project at such a late stage in a waterflooded field. Prior to CO{sub 2} injection Postle produced oil with a 98% water cut. Mobil began injecting CO{sub 2} into the Postle on Nov. 15, 1995. The Postle field, discovered in 1958 in the Oklahoma Panhandle near Guymon, had produced about 92 million bbl of oil under primary and waterflood production. Waterflooding started in 1967. Oil production peaked at about 22,000 bo/d in 1970 and averaged about 2,000 bo/d when CO{sub 2} injection began at a rate of 35 MMscfd. The paper describes Mobil`s plans for the CO{sub 2} injection, the CO{sub 2} process, project installations, and Mobil`s experience with CO{sub 2} injection in other fields.

  4. Manufacture of gradient micro-structures of magnesium alloys using two stage extrusion dies

    SciTech Connect (OSTI)

    Hwang, Yeong-Maw; Huang, Tze-Hui [Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, No. 70, Lien-Hai Rd., Kaohsiung, 804, Taiwan (China); Alexandrov, Sergei [Institute for Problems in Mechanics, Russian Academy of Sciences, Moscow (Russian Federation); Naimark, Oleg Borisovich [Institute of Continuous Media Mechanics, Russian Academy of Sciences, Perm (Russian Federation); Jeng, Yeau-Ren [Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-tech Innovations, National Chung Cheng University, Ming-Hsiung, Chia-Yi 621, Taiwan (China)

    2013-12-16T23:59:59.000Z

    This paper aims to manufacture magnesium alloy metals with gradient micro-structures using hot extrusion process. The extrusion die was designed to have a straight channel part combined with a conical part. Materials pushed through this specially-designed die generate a non-uniform velocity distribution at cross sections inside the die and result in different strain and strain rate distributions. Accordingly, a gradient microstructure product can be obtained. Using the finite element analysis, the forming temperature, effective strain, and effective strain rate distributions at the die exit were firstly discussed for various inclination angles in the conical die. Then, hot extrusion experiments with a two stage die were conducted to obtain magnesium alloy products with gradient micro-structures. The effects of the inclination angle on the grain size distribution at cross sections of the products were also discussed. Using a die of an inclination angle of 15°, gradient micro-structures of the grain size decreasing gradually from 17 ?m at the center to 4 ?m at the edge of product were achieved.

  5. Methanol masers : Reliable tracers of the early stages of high-mass star formation

    E-Print Network [OSTI]

    S. P. Ellingsen

    2005-10-07T23:59:59.000Z

    The GLIMPSE and MSX surveys have been used to examine the mid-infrared properties of a statistically complete sample of 6.7 GHz methanol masers. The GLIMPSE point sources associated with methanol masers are clearly distinguished from the majority, typically having extremely red mid-infrared colors, similar to those expected of low-mass class 0 young stellar objects. The intensity of the GLIMPSE sources associated with methanol masers is typically 4 magnitudes brighter at 8.0 micron than at 3.6 micron. Targeted searches towards GLIMPSE point sources with [3.6]-[4.5] > 1.3 and an 8.0 micron magnitude less than 10 will detect more than 80% of class II methanol masers. Many of the methanol masers are associated with sources within infrared dark clouds (IRDC) which are believed to mark regions where high-mass star formation is in its very early stages. The presence of class II methanol masers in a significant fraction of IRDC suggests that high-mass star formation is common in these regions. Different maser species are thought to trace different evolutionary phases of the high-mass star formation process. Comparison of the properties of the GLIMPSE sources associated with class II methanol masers and other maser species shows interesting trends, consistent with class I methanol masers tracing a generally earlier evolutionary phase and OH masers tracing a later evolutionary phase.

  6. Reciprocal space analysis of the initial stages of strain relaxation in SiGe epilayers

    SciTech Connect (OSTI)

    Lee, S.R.; Floro, J.A.

    1996-01-01T23:59:59.000Z

    Metastable SiGe films were grown by MBE on Si (001) substrates and annealed to promote varying degrees of partial relaxation. X-ray diffraction reciprocal-space analysis was then used to monitor the structural evolution of the displacement fields of the dislocation array with increasing misfit density. The diffuse-x-ray-scattering patterns of the dislocated heterolayers were compared with lineal- misfit densities determined by defect etching, leading to the develop a geometric model which provides a framework for understanding the early-stage evolution of the displacement fields of the dislocation array, and which also explicitly links diffuse x-ray intensity to misfit density. At low misfit density, the diffuse intensity arises from two-dimensional displacement fields associated with single-nonoverlapping dislocations. As misfit density increases, the displacement fields of individual dislocations increasingly overlap producing three-dimensional displacements. The evolving diffuse intensity reflects the transition from 2-D to 3-D displacement fields. Finally, it is demonstrated that the diffuse x-ray intensity of the strained epilayer can be used to accurately measure lineal misfit- dislocation densities from 400 to 20,000 lines/cm.

  7. Atomic structure of Cu-10. 9 at % Be alloys in the early stages of aging

    SciTech Connect (OSTI)

    Koo, Y.M.

    1987-01-01T23:59:59.000Z

    Diffuse x-ray scattering was employed to investigate the local atomic structure and static strains in a single crystal of a Cu-10.9 at. % Be alloy in the early stages of aging. In addition to these experiments, neutron elastic and inelastic scattering were obtained to investigate the phonon properties in the as-quenched state of this alloy. In the as-quenched state, there is a nearly regular array of small ellipsoidal Be clusters aligned along <100> directions (This produces the tweed contrast seen in TEM). The density of these clusters is 7.5 x 10/sup 26//m/sup 3/. The diffuse streaks seen in electron diffraction patterns are due largely to thermal diffuse scattering. Phonon-dispersion curves show no large differences from those of pure copper, except at (xi xi xi)/sub T/ zone boundary, where there is softening. This difference may be due to a Kohn anomaly. The elastic anisotropy of this alloy increases considerably with alloying, which probably leads to the plate-like GP zone morphology in subsequent aging treatments. The structure of the GP zones is a mixture of Be-rich single- and multi-layered zones. As aging proceeds, the zones grow in thickness.

  8. Evolutionary Stages and Disk Properties of Young Stellar Objects in the Perseus Cloud

    E-Print Network [OSTI]

    Zhang, Hong-Xin; Fang, Min; Yuan, Hai-Bo; Zhao, Yinghe; Chang, Ruixiang; Jiang, Xuejian; Liu, Xiao-Wei; Luo, A-Li; Ma, Hongjun; Shao, Zhengyi; Wang, Xiaolong

    2015-01-01T23:59:59.000Z

    We investigated the evolutionary stages and disk properties of 211 Young stellar objects (YSOs) across the Perseus cloud by modeling the broadband optical to mid-infrared (IR) spectral energy distribution (SED). By exploring the relationships among the turnoff wave bands lambda_turnoff (longward of which significant IR excesses above the stellar photosphere are observed), the excess spectral index alpha_excess at lambda = 5.8 microns, whereas the median fractional dust luminosities L_dust/L_star tend to decrease with lambda_turnoff. This points to an inside-out disk clearing of small dust grains. Moreover, a positive correlation between alpha_excess and R_in was found at alpha_excess > ~0 and R_in > ~10 $\\times$ the dust sublimation radius R_sub, irrespective of lambda_turnoff, L_dust/L_star and disk flaring. This suggests that the outer disk flaring either does not evolve synchronously with the inside-out disk clearing or has little influence on alpha_excess shortward of 24 microns. About 23% of our YSO disk...

  9. Ultrafine coal single stage dewatering and briquetting process. Technical report, September 1--November 30, 1994

    SciTech Connect (OSTI)

    Wilson, J.W. [Univ. of Missouri, Rolla, MO (United States). Dept. of Mining Engineering; Honaker, R.Q. [Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mining Engineering

    1994-12-31T23:59:59.000Z

    It is well known that a large portion of the pyrite particles in the coal seams of the Illinois Basin, are finely disseminated within the coal matrix. In order to liberate these micron size pyrite particles, one must use a fine grinding operation. The ultrafine coal particles that are produced are difficult to dewater and they create problems in coal transportation as well as in its storage and handling at utility plants. The objective of this research project is to combine ultrafine coal dewatering and briquetting processes into a single stage operation. This will be accomplished by the use of bitumen based emulsions for dewatering and a compaction device for briquetting. During this reporting period, two types of coal samples have been tested for use in the dewatering and briquetting processes. These tests were carried out in conjunction with a selected hydrophobic binder as the dewatering reagent and an uniaxial hydraulic press. The influence of compaction pressure and binder concentration (2 to 5%) on the performance of coal pellets have been evaluated in terms of their water and wear resistance. A laboratory scale ultrafine coal dewatering and briquetting extruder that can be operated continuously for coal pellets fabrication, has been designed and built, and will be available for testing in the next quarter.

  10. Particle selection in the ribbed mussel Geukensia demissa and the Eastern oyster Crassostrea virginica: Effect of microalgae growth stage

    E-Print Network [OSTI]

    Allam, Bassem

    virginica: Effect of microalgae growth stage Emmanuelle Pales Espinosa a , Bassem Allam a,*, Susan E. Ford b: pre-ingestive selection particle sorting bivalves flow cytometry microalgae growth phase a b s t r a c and oysters were able to selectively ingest or reject our experimental microalgae. Moreover, the pre

  11. A Two-Stage Microbial Fuel Cell and Anaerobic Fluidized Bed Membrane Bioreactor (MFC-AFMBR) System for Effective Domestic

    E-Print Network [OSTI]

    A Two-Stage Microbial Fuel Cell and Anaerobic Fluidized Bed Membrane Bioreactor (MFC-AFMBR) System treatment process, consisting of microbial fuel cells and an anaerobic fluidized bed membrane bioreactor that is currently required for typical activated sludge or aerobic membrane bioreactor processes. In addition, MFCs

  12. Security of supply secured by market forces: Different stages and welfare prospects in relation to Danish and

    E-Print Network [OSTI]

    Security of supply secured by market forces: Different stages and welfare prospects in relation Security of supply in electricity markets has been seen as a critical test for the functioning describes the possible steps and some necessary conditions for establishing markets for security of supply

  13. ETSU graduate students come from many backgrounds and career stages and there are many reasons for choosing ETSU for their

    E-Print Network [OSTI]

    Karsai, Istvan

    1 ETSU graduate students come from many backgrounds and career stages and there are many reasons for choosing ETSU for their graduate education. Many of our students are looking to make career changes their undergraduate degrees in order to qualify or establish additional credentials for their chosen careers. ETSU

  14. Experimental Research of Air Source Heat Pump Frosting and Defrosting in a Double Stage-Coupling Heat Pump

    E-Print Network [OSTI]

    Wang, Z.; Gu, J.; Lu, Z.

    2006-01-01T23:59:59.000Z

    In a double stage-coupling heat pump, comprising an air source and water loop heat pump, the 13~20 ? low temperature water is supplied to the water loop heat pump unit. The water loop heat pump can extract heat from the water and heat the indoor air...

  15. A Two-stage Kalman Filtering Approach for Robust and Real-time Power Systems State Tracking

    E-Print Network [OSTI]

    Welch, Greg

    A Two-stage Kalman Filtering Approach for Robust and Real-time Power Systems State Tracking Jinghe changes of system dynamics and erroneous PMU measurements. Index Terms--Power systems, real-time state- tics of loads and control devices are not included in operational models. This assumption reduces

  16. Experimental Research of Air Source Heat Pump Frosting and Defrosting in a Double Stage-Coupling Heat Pump 

    E-Print Network [OSTI]

    Wang, Z.; Gu, J.; Lu, Z.

    2006-01-01T23:59:59.000Z

    In a double stage-coupling heat pump, comprising an air source and water loop heat pump, the 13~20 ? low temperature water is supplied to the water loop heat pump unit. The water loop heat pump can extract heat from the water and heat the indoor air...

  17. Real Power and Reactive Power Control of a Three-Phase Single-Stage-PV System and PV voltage Stability

    SciTech Connect (OSTI)

    Li, Huijuan [ORNL] [ORNL; Xu, Yan [ORNL] [ORNL; Adhikari, Sarina [ORNL] [ORNL; Rizy, D Tom [ORNL] [ORNL; Li, Fangxing [ORNL] [ORNL; Irminger, Philip [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    Grid-connected photovoltaic (PV) systems with power electronic interfaces can provide both real and reactive power to meet power system needs with appropriate control algorithms. This paper presents the control algorithm design for a three-phase single-stage grid-connected PV inverter to achieve either maximum power point tracking (MPPT) or a certain amount of real power injection, as well as the voltage/var control. The switching between MPPT control mode and a certain amount of real power control mode is automatic and seamless. Without the DC-to-DC booster stage, PV DC voltage stability is an important issue in the control design especially when the PV inverter is operating at maximum power point (MPP) with voltage/var control. The PV DC voltage collapse phenomenon and its reason are discussed. The method based on dynamic correction of the PV inverter output is proposed to ensure PV DC voltage stability. Simulation results of the single-stage PV system during system disturbances and fast solar irradiation changes confirm that the proposed control algorithm for single-stage PV inverters can provide appropriate real and reactive power services and ensure PV DC voltage stability during dynamic system operation and atmospheric conditions.

  18. Simulating the Initial Stage of Phenolic Resin Carbonization via the ReaxFF Reactive Force De-en Jiang,*,

    E-Print Network [OSTI]

    Goddard III, William A.

    as a carbon source to make carbon/carbon composite materials.3 Recently, the soft-template synthesisSimulating the Initial Stage of Phenolic Resin Carbonization via the ReaxFF Reactive Force Field De, and Materials and Process Simulation Center, DiVision of Chemistry and Chemical Engineering, California

  19. Seismic evidence of up to 200 m lake-level change in Southern Patagonia since Marine Isotope Stage 4

    E-Print Network [OSTI]

    Gilli, Adrian

    Seismic evidence of up to 200 m lake-level change in Southern Patagonia since Marine Isotope Stage Laguna Potrok Aike is located north of the Strait of Magellan (south- eastern Patagonia). Seismic, Patagonia, seismic reflection profiles. INTRODUCTION During the past decade, several studies have shown

  20. Soil nematode communities are ecologically more mature beneath late-than early-successional stage biological soil crusts

    E-Print Network [OSTI]

    Neher, Deborah A.

    Soil nematode communities are ecologically more mature beneath late- than early-successional stage biological soil crusts Brian J. Darby a,*, Deborah A. Neher a , Jayne Belnap b a Department of Plant and Soil; accepted 12 April 2006 Abstract Biological soil crusts are key mediators of carbon and nitrogen inputs

  1. Strategic Decision-Making with Information and Extraction Externalities: A Structural Model of the Multi-Stage Investment Timing Game

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    of the Multi-Stage Investment Timing Game in Offshore Petroleum Production C.-Y. Cynthia Lin 1 Appendix: Monte's exploration decision as a fraction of a firm's average de- velopment cost is given by |·drill_cost| = 049's average devel- opment cost is given by |·drill_cost| = 049|| = -159. Thus, when a neighbor explores

  2. Georgetown University Integrated Community Energy System (GU-ICES). Phase III, Stage I: feasibility analysis. Final report

    SciTech Connect (OSTI)

    Buck, Victor

    1980-10-01T23:59:59.000Z

    Candidate energy alternatives are analyzed in Phase III, Stage I, and the appendices are presented for the feasibility analysis. Information in eight appendices includes the following: detailed statement of work; PEPCO rate schedules; cogeneration schemes; added coal, limestone, and ash storage; hot and cold thermal storage; absorption refrigeration; high temperature heat pumps; and life cycle cost analysis. (MCW)

  3. Catalysts and process developments for two-stage liquefaction. Final technical report, October 1, 1989--September 30, 1992

    SciTech Connect (OSTI)

    Cronauer, D.C.; Swanson, A.J.; Sajkowski, D.J.

    1992-12-31T23:59:59.000Z

    Research in this project centered upon developing and evaluating catalysts and process improvements for coal liquefaction in the two-stage, close-coupled catalytic process. The major results are summarized here and they are described in more detail under each Task. In tasks for coal pretreatment and beneficiation, it was shown for coal handling that drying of both lignite or subbituminous coals using warm air, vacuum oven or exposing to air for long time was detrimental to subsequent liquefaction. Both laboratory and bench-scale beneficiations indicated that in order to achieve increased liquefaction yield for Illinois No. 6 bituminous coal, size separation with in sink-float technique should be used. For subbituminous coal, the best beneficiation was aqueous SO{sub 2} treatment, which reduced mineral matter. In the case of lignite, the fines should be rejected prior to aqueous SO{sub 2} treatment and sink-float gravity separation. In liquefying coals with supported catalysts in both first and second stages, coal conversion was highest (93%) with Illinois No. 6 coal, which also had the highest total liquid yield of 80%, however, the product contained unacceptably high level of resid (30%). Both low rank coals gave lower conversion (85--87%) and liquid yields (57--59%), but lighter products (no resid). The analysis of spent first stage catalysts indicated significant sodium and calcium deposits causing severe deactivation. The second stage catalysts were in better condition showing high surface areas and low coke and metal deposits. The use of dispersed catalyst in the first stage would combat the severe deactivation.

  4. MAGNESIUM ISOTOPE EVIDENCE FOR SINGLE STAGE FORMATION OF CB CHONDRULES BY COLLIDING PLANETESIMALS

    SciTech Connect (OSTI)

    Olsen, Mia B.; Schiller, Martin; Krot, Alexander N.; Bizzarro, Martin [Centre for Star and Planet Formation, Natural History Museum of Denmark, University of Copenhagen, Copenhagen DK-1350 (Denmark)] [Centre for Star and Planet Formation, Natural History Museum of Denmark, University of Copenhagen, Copenhagen DK-1350 (Denmark)

    2013-10-10T23:59:59.000Z

    Chondrules are igneous spherical objects preserved in chondritic meteorites and believed to have formed during transient heating events in the solar protoplanetary disk. Chondrules present in the metal-rich CB chondrites show unusual chemical and petrologic features not observed in other chondrite groups, implying a markedly distinct formation mechanism. Here, we report high-precision Mg-isotope data for 10 skeletal olivine chondrules from the Hammadah al Hamra 237 (HH237) chondrite to probe the formation history of CB chondrules. The {sup 27}Al/{sup 24}Mg ratios of individual chondrules are positively correlated to their stable Mg-isotope composition (?{sup 25}Mg), indicating that the correlated variability was imparted by a volatility-controlled process (evaporation/condensation). The mass-independent {sup 26}Mg composition (?{sup 26}Mg*) of chondrules is consistent with single stage formation from an initially homogeneous magnesium reservoir if the observed ?{sup 25}Mg variability was generated by non-ideal Rayleigh-type evaporative fractionation characterized by a ? value of 0.5142, in agreement with experimental work. The magnitude of the mass-dependent fractionation (?300 ppm) is significantly lower than that suggested by the increase in {sup 27}Al/{sup 24}Mg values, indicating substantial suppression of isotopic fractionation during evaporative loss of Mg, possibly due to evaporation at high Mg partial pressure. Thus, the Mg-isotope data of skeletal chondrules from HH237 are consistent with their origin as melts produced in the impact-generated plume of colliding planetesimals. The inferred ?{sup 26}Mg* value of –3.87 ± 0.93 ppm for the CB parent body is significantly lower than the bulk solar system value of 4.5 ± 1.1 ppm inferred from CI chondrites, suggesting that CB chondrites accreted material comprising an early formed {sup 26}Al-free component.

  5. Fabrication of Message Digest to Authenticate Audio Signals with Alternation of Coefficients of Harmonics in Multi-Stages (MDAC)

    E-Print Network [OSTI]

    Mondal, Uttam Kr

    2012-01-01T23:59:59.000Z

    Providing security to audio songs for maintaining its intellectual property right (IPR) is one of chanllenging fields in commercial world especially in creative industry. In this paper, an effective approach has been incorporated to fabricate authentication of audio song through application of message digest method with alternation of coefficients of harmonics in multi-stages of higher frequency domain without affecting its audible quality. Decomposing constituent frequency components of song signal using Fourier transform with generating secret code via applying message digest followed by alternating coefficients of specific harmonics in multi-stages generates a secret code and this unique code is utilized to detect the originality of the song. A comparative study has been made with similar existing techniques and experimental results are also supported with mathematical formula based on Microsoft WAVE (".wav") stereo sound file.

  6. High freestream turbulence levels have been shown to greatly augment the heat transfer along a gas turbine airfoil, particularly for the first stage

    E-Print Network [OSTI]

    Thole, Karen A.

    along a gas turbine airfoil, particularly for the first stage nozzle guide vane. For this study of the variables affecting boundary layer development on gas turbine airfoils, studies need to be performed, augmentations in convective heat transfer have been measured for a first stage turbine vane in the stagna- tion

  7. 774 IEEE TRANSACTIONS ON AUDIO, SPEECH, AND LANGUAGE PROCESSING, VOL. 14, NO. 3, MAY 2006 A Two-Stage Algorithm for One-Microphone

    E-Print Network [OSTI]

    Wang, DeLiang "Leon"

    -Stage Algorithm for One-Microphone Reverberant Speech Enhancement Mingyang Wu, Member, IEEE, and DeLiang Wang by this observation, we propose a two-stage reverberant speech enhancement algorithm using one microphone algorithm significantly improves the quality of reverberant speech. A comparison with a recent enhancement

  8. Intitul du stage : Dveloppement d'un outil de modlisation hydromcanique grande chelle du stockage gologique de CO2.

    E-Print Network [OSTI]

    Dumont, Serge

    stockage géologique de CO2. Tuteurs : P. Sochala et D. Seyedi. Filière* Risques Naturels et Sécurité du stockage du CO2 Spécialité Mathématiques appliquées et Informatique Type de contrat Stage Pays France Naturels et Sécurité du stockage du CO2 un(e) stagiaire dans le cadre du projet de recherche

  9. Costs of chronic disease and an alternative to reduce these costs: case study of End Stage Renal Disease (ESRD)

    E-Print Network [OSTI]

    Jang, Won-Ik

    2005-02-17T23:59:59.000Z

    COSTS OF CHRONIC DISEASE AND AN ALTERNATIVE TO REDUCE THESE COSTS: CASE STUDY OF END STAGE RENAL DISEASE (ESRD) A Dissertation by WON-IK JANG Submitted to the Office of Graduate Studies of Texas A&M University in partial...) A Dissertation by WON-IK JANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved as to style and content by...

  10. A review of "Conscience on Stage: The Comedia as Casuistry in Early Modern Spain" by Hillaire Kallendorf

    E-Print Network [OSTI]

    Wright, Elizabeth

    2009-01-01T23:59:59.000Z

    , social and cultural historians? (20). Hilaire Kallendorf. Conscience on Stage: The Comedia as Casuistry in Early Modern Spain. Toronto: University of Toronto Press, 2007. x + 299 pp. $65. Review by elizabeth r. wright, university of georgia. Spain?s... playwrights. Yet a miniscule proportion of plays have attracted careful and sustained scholarly scrutiny or are performed regularly in repertories. This book reports on one scholar?s project to widen the lens through which we view Spain?s ?Golden Age...

  11. Hazardous Waste Code Determinations for the First/Second Stage Sludge Waste Stream (IDCs 001, 002, 800)

    SciTech Connect (OSTI)

    Arbon, Rodney Edward

    2001-01-01T23:59:59.000Z

    This document, Hazardous Waste Code Determination for the First/Second-Stage Sludge Waste Stream, summarizes the efforts performed at the Idaho National Engineering and Environmental Laboratory (INEEL) to make a hazardous waste code determination on Item Description Codes (IDCs) 001, 002, and 800 drums. This characterization effort included a thorough review of acceptable knowledge (AK), physical characterization, waste form sampling, chemical analyses, and headspace gas data. This effort included an assessment of pre-Waste Analysis Plan (WAP) solidified sampling and analysis data (referred to as preliminary data). Seventy-five First/Second-Stage Sludge Drums, provided in Table 1-1, have been subjected to core sampling and analysis using the requirements defined in the Quality Assurance Program Plan (QAPP). Based on WAP defined statistical reduction, of preliminary data, a sample size of five was calculated. That is, five additional drums should be core sampled and analyzed. A total of seven drums were sampled, analyzed, and validated in compliance with the WAP criteria. The pre-WAP data (taken under the QAPP) correlated very well with the WAP compliant drum data. As a result, no additional sampling is required. Based upon the information summarized in this document, an accurate hazardous waste determination has been made for the First/Second-Stage Sludge Waste Stream.

  12. A Two-Stage Kalman Filter Approach for Robust and Real-Time Power System State Estimation

    SciTech Connect (OSTI)

    Zhang, Jinghe; Welch, Greg; Bishop, Gary; Huang, Zhenyu

    2014-04-01T23:59:59.000Z

    As electricity demand continues to grow and renewable energy increases its penetration in the power grid, realtime state estimation becomes essential for system monitoring and control. Recent development in phasor technology makes it possible with high-speed time-synchronized data provided by Phasor Measurement Units (PMU). In this paper we present a two-stage Kalman filter approach to estimate the static state of voltage magnitudes and phase angles, as well as the dynamic state of generator rotor angles and speeds. Kalman filters achieve optimal performance only when the system noise characteristics have known statistical properties (zero-mean, Gaussian, and spectrally white). However in practice the process and measurement noise models are usually difficult to obtain. Thus we have developed the Adaptive Kalman Filter with Inflatable Noise Variances (AKF with InNoVa), an algorithm that can efficiently identify and reduce the impact of incorrect system modeling and/or erroneous measurements. In stage one, we estimate the static state from raw PMU measurements using the AKF with InNoVa; then in stage two, the estimated static state is fed into an extended Kalman filter to estimate the dynamic state. Simulations demonstrate its robustness to sudden changes of system dynamics and erroneous measurements.

  13. Investigation of mineral transformation and ash deposition during staged combustion. Final report, October 1, 1993--September 30, 1997

    SciTech Connect (OSTI)

    Harb, J.N.

    1997-12-31T23:59:59.000Z

    The purpose of this report is to document a recently completed four-year study to examine the impact of low-NOx firing technologies on ash formation and deposition while firing pulverized coal. Low-NOx burners and staged combustion inhibit NOx formation by restricting the amount of oxygen available to form a fuel-rich zone in which nitrogen compounds are reduced to molecular nitrogen (N{sub 2}) rather than oxidized. Additional oxygen is provided downstream for complete combustion. Consequently, coal and mineral particles encounter different temperatures and oxygen concentrations when they are burned under low-NOx firing conditions than they do in conventionally-fired units. Two coals with distinctly different inorganic contents and ash characteristics were fired in a pilot-scale laboratory combustor under both conventional and staged combustion conditions. Ash and deposit samples were collected at various locations in the reactor and analyzed in order to assess the influence of staged combustion. This report is organized as follows. First, a background section provides the foundation needed in order to understand the motivation for and the results of the experimental program. The next section presents a description of the experimental apparatus and procedures, including the development the analytical methods critical to the study. Results of the analyses of coal, ash and deposit samples are then presented and discussed for each of the two coals. Finally, the report ends with a short summary and statement of conclusions.

  14. Analysis of hematopoiesis in mice irradiated with 500 mGy of X rays at different stages of development

    SciTech Connect (OSTI)

    Grande, T.; Bueren, J.A. [U. de Biologia Molecular y Celular, Madrid (Spain)

    1995-09-01T23:59:59.000Z

    We have investigated whether a relatively low dose of 500 mGy of X rays given as a single acute irradiation at different stages of pre-and postnatal development induces significant changes in the content of femoral hematopoietic progenitores during a 1-year period after irradiation. Data obtained show that, in the case of 4-day-old embryos as well as in 2-day, 8-day and 12-week-old mice, this dose is below the threshold capable of inducing a long-term impairment of hematopoiesis in the mouse. Nevertheless, in mice irradiated at the 13th or the 17th day postconception, a hematopoietic dysfunction consisting of a significant reduction in the proportion of femoral granulocyte-macrophage colony-forming units (CFU-GM) was manifested 1 year after irradiation. Our study confirms that, for most stages of development in the mouse, a single acute X irradiation of 500 mGy is below the threshold dose capable of inducing deterministic effects in the mouse hematopoietic system, although it reveals the induction of a significant impairment in the CFU-GM population when irradiation is given at the late stages of embryonic development. 24 refs., 4 figs.

  15. Evaluation of two-stage system for neutron measurement aiming at increase in count rate at Japan Atomic Energy Agency-Fusion Neutronics Source

    SciTech Connect (OSTI)

    Shinohara, K., E-mail: shinohara.koji@jaea.go.jp; Ochiai, K.; Sukegawa, A. [Japan Atomic Energy Agency, Naka, Ibaraki 311-0193 (Japan); Ishii, K.; Kitajima, S. [Department of Quantum Science and Energy Engineering, Tohoku University, Sendai, Miyagi 980-8579 (Japan); Baba, M. [Cyclotron and Radioisotope Center, Tohoku University, Sendai, Miyagi 980-8578 (Japan); Sasao, M. [Organization for Research Initiatives and Development, Doshisha University, Kyoto 602-8580 (Japan)

    2014-11-15T23:59:59.000Z

    In order to increase the count rate capability of a neutron detection system as a whole, we propose a multi-stage neutron detection system. Experiments to test the effectiveness of this concept were carried out on Fusion Neutronics Source. Comparing four configurations of alignment, it was found that the influence of an anterior stage on a posterior stage was negligible for the pulse height distribution. The two-stage system using 25 mm thickness scintillator was about 1.65 times the count rate capability of a single detector system for d-D neutrons and was about 1.8 times the count rate capability for d-T neutrons. The results suggested that the concept of a multi-stage detection system will work in practice.

  16. Engineering support services for the DOE/GRI coal-gasification research program. Evaluation of the data base for single-stage gasification of peat. [IGT 6 inch, single stage, fluidized bed (not PEATGAS)

    SciTech Connect (OSTI)

    Bostwick, L.E.; Hubbard, D.A.; Shah, K.V.; Do, L.T.

    1982-03-01T23:59:59.000Z

    Kellogg has reviewed the data base generated by IGT in the 6 inch PDU for the single stage fluidized bed gasification of peat. Kellogg's central finding is that the existing data base should be expanded by further testing in the PDU, after necessary modifications, to investigate further the effects of operating parameters within the ranges of interest. The existing data base consists of 20 PDU runs. Kellogg has concentrated on the Minnesota peat data base, since an insufficient number of runs exist for Maine and North Carolina peats to establish any valid trends. Consequently, the evaluation presented concerns only the Minnesota peat data base with respect to ranges of operating parameters studied, the criteria for good fluidized-bed operation and the effects of the key operating parameters on the performance. In Kellogg's opinion the existing data base demonstrates that: gasification of peat at 90+% carbon conversion is possible in a single stage fluidized bed reactor; the most significant operating parameters have been identified; the single stage fluidized bed peat gasifier has merit because of simplicity of operation, near-zero production of liquids and potential of operation without steam and at low pressure. However, Kellogg notes the following shortcomings:relatively small number of experimental runs and lack of data at certain levels of operating parameters studied; sintering occurred in 35% of the runs; in all the 20 test runs, fines losses exceeded in 5% of the feed and for the Minnesota peat data base, fines losses averaged 12.8%; use of large amounts of fluidizing gas (in this case N/sub 2/), which does not reflect commercial operation; and lack of data with higher peat feed moisture content. Thus, in Kellogg's opinion, considerable advantage is to be gained by expanding the existing data base and lists its specific recommendations.

  17. EIS-0285-SA-07: Supplement Analysis | Department of Energy

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

    and proposed new sections of the McNary-Roundup and the McNary Switchyard South Transmission lines. Supplement Analysis for the Transmission System Vegetation Management Program...

  18. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01T23:59:59.000Z

    California, Mexico. 15. US Western Interconnection BlackoutMexico Border, and via the SONGS 230kV switchyard – SDG&E’s only direct interconnection

  19. G:\\ESS\\248 RCRA\\SWMU Report Cor

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

    was designated as a temporary storage area for bushings removed from switchyard transformers. OPERATIONAL STATUS: Inactive DATES OPERATED: Approximately 3 weeks during 799....

  20. EIS-0400: EPA Notice of Availability of Final Environmental Impact...

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

    Final Environmental Impact Statement EIS-0400: EPA Notice of Availability of Final Environmental Impact Statement Granby Pumping Plant Switchyard-Windy Gap Substation Transmission...

  1. EIS-0400: EPA Notice of Availability of a Draft Environmental...

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

    a Draft Environmental Impact Statement EIS-0400: EPA Notice of Availability of a Draft Environmental Impact Statement Grandby Pumping Plant Switchyard Windy Gap Substation...

  2. Energy Secretary Chu Announces $138 Million in Recovery Act Funding...

    Energy Savers [EERE]

    - Demolish surplus facilities, including electrical switchyard structures, cooling towers, and one pump house, and clean up 65 acres of contaminated soils. Remove the source...

  3. CX-010341: Categorical Exclusion Determination | Department of...

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

    line in order to allow the bureau of Reclamation to enlarge their Chandler Power and Pumping Plant switchyard, eliminating safety hazards and reducing the incidence of power...

  4. Microsoft Word - CX_Memo_ChandlerTap_BOR.docx

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

    in order to allow the Bureau of Reclamation (BOR) to enlarge their Chandler Power and Pumping Plant switchyard, eliminating safety hazards and reducing the incidence of power...

  5. APPLICATION OF A CATEGORICAL EXCLUSION

    Office of Environmental Management (EM)

    of electric power at the Portsmouth Gaseous Diffusion Facility to support the Decontamination and Demolition and remediation of the X-530 Switchyard while satisfying the...

  6. Factors Affecting the Risk of Brain Metastasis in Small Cell Lung Cancer With Surgery: Is Prophylactic Cranial Irradiation Necessary for Stage I-III Disease?

    SciTech Connect (OSTI)

    Gong Linlin; Wang, Q.I.; Zhao Lujun; Yuan Zhiyong; Li Ruijian [Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, and Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin (China)] [Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, and Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin (China); Wang Ping, E-mail: Doctorwang66@yahoo.cn [Department of Radiotherapy, Tianjin Medical University Cancer Institute and Hospital, and Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin (China)

    2013-01-01T23:59:59.000Z

    Purpose: The use of prophylactic cranial irradiation (PCI) in small cell lung cancer (SCLC) with surgical resection has not been fully identified. This study undertook to assess the factors affecting the risk of brain metastases in patients with stage I-III SCLC after surgical resection. The implications of PCI treatment for these patients are discussed. Methods and Materials: One hundred twenty-six patients treated with surgical resection for stage I-III SCLC from January 1998-December 2009 were retrospectively analyzed to elucidate the risk factors of brain metastases. Log-rank test and Cox regression model were used to determine the risk factors of brain metastases. Results: The median survival time for this patient population was 34 months, and the 5-year overall survival rate was 34.9%. For the whole group, 23.0% (29/126) of the patients had evidence of metastases to brain. Pathologic stage not only correlated with overall survival but also significantly affected the risk of brain metastases. The 5-year survival rates for patients with pathologic stages I, II, and III were 54.8%, 35.6%, and 14.1%, respectively (P=.001). The frequency of brain metastases in patients with pathologic stages I, II, and III were 6.25% (2/32), 28.2% (11/39), and 29.1% (16/55) (P=.026), respectively. A significant difference in brain metastases between patients with complete resection and incomplete resection was also observed (20.5% vs 42.9%, P=.028). The frequency of brain metastases was not found to be correlated with age, sex, pathologic type, induction chemotherapy, adjuvant chemotherapy, or adjuvant radiation therapy. Conclusions: Stage I SCLC patients with complete resection had a low incidence of brain metastases and a favorable survival rate. Stage II-III disease had a higher incidence of brain metastases. Thus, PCI might have a role for stage II-III disease but not for stage I disease.

  7. Toxicity and histopathological effects of CGA-255'728 on different stages of the cat flea, Ctenocephalides felis (Bouche) (Siphonaptera:Pulicidae)

    E-Print Network [OSTI]

    Rasa, Cordelia Gisela

    1998-01-01T23:59:59.000Z

    )yolk. . . . . . . . . . . . . . . . 4. Follicle cells surrounding developing oocytes in a 10 ppb fed adult flea. These cells are clearly defined and well nucleated, (n)nucleus, (flfollicle cells. 13 14 5. Midgut epithelia was normal in all treatments. (mg)midgut . . . 6. Midgut...), but this does not inhibit their further development. The pupal stage is considered to be the most resilient stage of the flea life cycle. It is the stage which is most difficult to chenucally treat in carpets because of the tolerance to insecticides of flea...

  8. Natural History of Clinically Staged Low- and Intermediate-Risk Prostate Cancer Treated With Monotherapeutic Permanent Interstitial Brachytherapy

    SciTech Connect (OSTI)

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

    2010-02-01T23:59:59.000Z

    Purpose: To evaluate the natural history of clinically staged low- and intermediate-risk prostate cancer treated with permanent interstitial seed implants as monotherapy. Methods and Materials: Between April 1995 and May 2005, 463 patients with clinically localized prostate cancer underwent brachytherapy as the sole definitive treatment. Men who received supplemental external beam radiotherapy or androgen deprivation therapy were excluded. Dosimetric implant quality was determined based on the minimum dose that covered 90% of the target volume and the volume of the prostate gland receiving 100% of the prescribed dose. Multiple parameters were evaluated as predictors of treatment outcomes. Results: The 12-year biochemical progression-free survival (bPFS), cause-specific survival, and overall survival rates for the entire cohort were 97.1%, 99.7%, and 75.4%, respectively. Only pretreatment prostate-specific antigen level, percent positive biopsy cores, and minimum dose that covered 90% of the target volume were significant predictors of biochemical recurrence. The bPFS, cause-specific survival, and overall survival rates were 97.4%, 99.6%, and 76.2%, respectively, for low-risk patients and 96.4%, 100%, and 74.0%, respectively, for intermediate-risk patients. The bPFS rate was 98.8% for low-risk patients with high-quality implants versus 92.1% for those with less adequate implants (p < 0.01), and it was 98.3% for intermediate-risk patients with high-quality implants versus 86.4% for those with less adequate implants (p < 0.01). Conclusions: High-quality brachytherapy implants as monotherapy can provide excellent outcomes for men with clinically staged low- and intermediate-risk prostate cancer. For these men, a high-quality implant can achieve results comparable to high-quality surgery in the most favorable pathologically staged patient subgroups.

  9. Sulfur removal in advanced two stage pressurized fluidized bed combustion. Technical report, 1 March--31 May 1994

    SciTech Connect (OSTI)

    Abbasian, J.; Chowdiah, P.; Hill, A.H.; Rue, D.M. [Inst. of Gas Technology, Chicago, IL (United States)

    1994-09-01T23:59:59.000Z

    The objective of this study is to obtain data on the rates of reaction between hydrogen sulfide (H{sub 2}S) and uncalcined calcium-based sorbents under operating conditions relevant to first stage (carbonizer) of Advanced Two-Stage Pressurized Fluidized-Bed Combustors (PFBC). In these systems the CO{sub 2} partial pressure in the first stage generally exceeds the equilibrium value for calcium carbonate decomposition. Therefore, removal of sulfur compounds takes place through the reaction between H{sub 2}S and calcium carbonate. To achieve this objective, the rates of reaction between hydrogen sulfide and uncalcined calcium-based sorbents will be determined by conducting tests in pressurized thermogravimetric analyzer (TGA) and high-pressure/high-temperature fluidized-bed reactor (HPTR) units. The effects of sorbent type, sorbent particle size, reactor temperature and pressure, and CO{sub 2} and H{sub 2}S partial pressures on the sulfidation reaction rate will be determined. During this quarter a series of sulfidation tests were conducted in the high-pressure/high-temperature fluidized-bed reactor (HPTR) units. The effects of sorbent type, sorbent particle size, reactor temperature and pressure, and CO{sub 2} and H{sub 2}S partial pressures on the sulfidation reaction rate will be determined. During this quarter a series of sulfidation tests were conducted in the high-pressure high-temperature thermogravimetric analyzer (HPTGA unit) using limestone and dolomite. The results suggest that half-calcined dolomite is much more reactive than uncalcined limestone. Also, temperature in the range of 800 to 950 C did not significantly affect the sulfidation reaction rates for both limestone and dolomite.

  10. Two-stage epitaxial growth of vertically-aligned SnO2 nano-rods on(001) ceria

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

    Solovyov, Vyacheslav F. [Brookhaven National Lab. (BNL), Upton, NY (United States); Wu, Li-jun [Brookhaven National Lab. (BNL), Upton, NY (United States); Rupich, Martin W. [American Superconductor, Devens, MA (United States); Sathyamurthy, Srivatsan [American Superconductor, Devens, MA (United States); Li, Xiaoping [American Superconductor, Devens, MA (United States); Li, Qiang [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2014-12-01T23:59:59.000Z

    Growth of high-aspect ratio oriented tin oxide, SnO2, nano-rods is complicated by a limited choice of matching substrates. We show that a (001) cerium oxide, CeO2, surface uniquely enables epitaxial growth of tin-oxide nano-rods via a two-stage process. First, (100) oriented nano-wires coat the ceria surface by lateral growth, forming a uniaxially-textured SnO2 deposit. Second, vertical SnO2nano-rods nucleate on the deposit by homoepitaxy. We demonstrate growth of vertically oriented 1-2 ?m long nano-rods with an average diameter of ?20 nm.

  11. Two Stage Vapor Compression Heat Pump with Solution Circuits: Catering to Simultaneous Chilling and Water Heating Needs

    E-Print Network [OSTI]

    Rane, M. V.; Radermacher, R.

    results indicate that the two stage VCHSC can achiev~ cooling coefficient of performances as high as 1.04 while pumping heat through a lift of 194?F (10S0C). Comparison is made with a system consisting of a vapor compressor chiller and a gas fired... conditioning and hot water for various uses will be assessed. comparison is made with a system consisting of a vapor compressor chiller and a gas fired furnace (option 2). The basis for comparison being: a) the total primary energy usage, b) the cost...

  12. Compact disposal of high-energy electron beams using passive or laser-driven plasma decelerating stage

    SciTech Connect (OSTI)

    Bonatto, A.; Schroeder, C.B.; Vay, J.-L.; Geddes, C.R.; Benedetti, C.; Esarey and, E.; Leemans, W.P.

    2014-07-13T23:59:59.000Z

    A plasma decelerating stage is investigated as a compact alternative for the disposal of high-energy beams (beam dumps). This could benefit the design of laser-driven plasma accelerator (LPA) applications that require transportability and or high-repetition-rate operation regimes. Passive and laser-driven (active) plasma-based beam dumps are studied analytically and with particle-in-cell (PIC) simulations in a 1D geometry. Analytical estimates for the beam energy loss are compared to and extended by the PIC simulations, showing that with the proposed schemes a beam can be efficiently decelerated in a centimeter-scale distance.

  13. Pretreatment Staging Positron Emission Tomography/Computed Tomography in Patients With Inflammatory Breast Cancer Influences Radiation Treatment Field Designs

    SciTech Connect (OSTI)

    Walker, Gary V. [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Niikura, Naoki [Department of Breast and Endocrine Surgery, Tokai University School of Medicine, Kanagawa (Japan)] [Department of Breast and Endocrine Surgery, Tokai University School of Medicine, Kanagawa (Japan); Yang Wei [Department of Diagnostic Radiology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Diagnostic Radiology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Rohren, Eric [Department of Nuclear Medicine, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Nuclear Medicine, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Valero, Vicente [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Woodward, Wendy A. [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Alvarez, Ricardo H. [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Lucci, Anthony [Department of Surgical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Surgical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Ueno, Naoto T. [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Buchholz, Thomas A., E-mail: tbuchhol@mdanderson.org [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

    2012-08-01T23:59:59.000Z

    Purpose: Positron emission tomography/computed tomography (PET/CT) is increasingly being utilized for staging of inflammatory breast cancer (IBC). The purpose of this study was to define how pretreatment PET/CT studies affected postmastectomy radiation treatment (PMRT) planning decisions for IBC. Methods and Materials: We performed a retrospective analysis of 62 patients diagnosed with IBC between 2004 and 2009, who were treated with PMRT in our institution and who had a staging PET/CT within 3 months of diagnosis. Patients received a baseline physical examination, staging mammography, ultrasonographic examination of breast and draining lymphatics, and chest radiography; most patients also had a bone scan (55 patients), liver imaging (52 patients), breast MRI (46 patients), and chest CT (25 patients). We compared how PET/CT findings affected PMRT, assuming that standard PMRT would target the chest wall, level III axilla, supraclavicular fossa, and internal mammary chain (IMC). Any modification of target volumes, field borders, or dose prescriptions was considered a change. Results: PET/CT detected new areas of disease in 27 of the 62 patients (44%). The areas of additional disease included the breast (1 patient), ipsilateral axilla (1 patient), ipsilateral supraclavicular (4 patients), ipsilateral infraclavicular (1 patient), ipsilateral IMC (5 patients), ipsilateral subpectoral (3 patients), mediastinal (8 patients), other distant/contralateral lymph nodes (15 patients), or bone (6 patients). One patient was found to have a non-breast second primary tumor. The findings of the PET/CT led to changes in PMRT in 11 of 62 patients (17.7%). These changes included additional fields in 5 patients, adjustment of fields in 2 patients, and higher doses to the supraclavicular fossa (2 patients) and IMC (5 patients). Conclusions: For patients with newly diagnosed IBC, pretreatment PET/CT provides important information concerning involvement of locoregional lymph nodes, mediastinal lymph nodes, and unsuspected sites of distant metastasis. This information is important in the design of radiotherapy treatment fields and, therefore, we recommend that PET/CT be a component of initial staging for IBC.

  14. Outcomes of Stereotactic Ablative Radiotherapy in Patients With Potentially Operable Stage I Non-Small Cell Lung Cancer

    SciTech Connect (OSTI)

    Lagerwaard, Frank J., E-mail: fj.lagerwaard@vumc.nl [Department of Radiation Oncology, VU University Medical Center, Amsterdam (Netherlands); Verstegen, Naomi E.; Haasbeek, Cornelis J.A.; Slotman, Ben J. [Department of Radiation Oncology, VU University Medical Center, Amsterdam (Netherlands); Paul, Marinus A. [Department of Thoracic Surgery, VU University Medical Center, Amsterdam (Netherlands); Smit, Egbert F. [Department of Pulmonary Medicine, VU University Medical Center, Amsterdam (Netherlands); Senan, Suresh [Department of Radiation Oncology, VU University Medical Center, Amsterdam (Netherlands)

    2012-05-01T23:59:59.000Z

    Background: Approximately two-thirds of patients with early-stage non-small-cell lung cancer (NSCLC) in The Netherlands currently undergo surgical resection. As an increasing number of fit patients have elected to undergo stereotactic ablative radiotherapy (SABR) in recent years, we studied outcomes after SABR in patients with potentially operable stage I NSCLC. Methods and Materials: In an institutional prospective database collected since 2003, 25% of lung SABR cases (n = 177 patients) were found to be potentially operable when the following patients were excluded: those with (1) synchronous lung tumors or other malignancy, (2) prior high-dose radiotherapy/pneumonectomy, (3) chronic obstructive pulmonary disease with a severity score of 3-4 according to the Global initiative for Obstructive Lung Disease classification. (4) a performance score of {>=}3, and (5) other comorbidity precluding surgery. Study patients included 101 males and 76 females, with a median age of 76 years old, 60% of whom were staged as T1 and 40% of whom were T2. Median Charlson comorbidity score was 2 (range, 0-5). A SABR dose of 60 Gy was delivered using a risk-adapted scheme in 3, 5, or 8 fractions, depending on tumor size and location. Follow-up chest computed tomography scans were obtained at 3, 6, and 12 months and yearly thereafter. Results: Median follow-up was 31.5 months; and median overall survival (OS) was 61.5 months, with 1- and 3-year survival rates of 94.7% and 84.7%, respectively. OS rates at 3 years in patients with (n = 59) and without (n = 118) histological diagnosis did not differ significantly (96% versus 81%, respectively, p = 0.39). Post-SABR 30-day mortality was 0%, while predicted 30-day mortality for a lobectomy, derived using the Thoracoscore predictive model (Falcoz PE et al. J Thorac Cardiovasc Surg 2007;133:325-332), would have been 2.6%. Local control rates at 1 and 3 years were 98% and 93%, respectively. Regional and distant failure rates at 3 years were each 9.7%. Toxicity was mild, with grade {>=}3 radiation pneumonitis and rib fractures in 2% and 3%, respectively. Conclusions: Patients with potentially operable disease who underwent primary SABR had a median OS that exceeded 5 years. This finding supports ongoing randomized clinical trials comparing surgery and SABR in cases of operable stage I NSCLC.

  15. Some effects of selenium on the growth and survival of larval stages of the american oyster, Crassostrea virginica 

    E-Print Network [OSTI]

    Smith, Wendy S

    1979-01-01T23:59:59.000Z

    State University Chairman of Advisory Committee: Dr. J . M. Neff Acute Oioa say on early life stages of C assostre ~vi i ica indicate that selenium was toxic at all concentrations tested. Toxic effects are most significant at 10 ppm, particularly...) of the experiment. Some toxicity however, was apparent. In continuous exposures, selenium proved to be highly toxic, with effects compounded over time. Survival in 10 ppm was less than 1! after 48 hours and decreased to . 14K after 72 hours. In all...

  16. Bands, orchestras, and the ideal I : the musical stage as constitutive of the I function / by Tracy Marie McMullen

    E-Print Network [OSTI]

    McMullen, Tracy

    2007-01-01T23:59:59.000Z

    25 Bank of America, and Coca-Cola. Playing on smoky imagess annual “Dizzy’s Club Coca-Cola Presents: The Diet- Cokeon a stage described as Coca-Cola. Could there be a more

  17. Production and inventory control of a multi-item multi-stage manufacturing system : simulation modeling, capacitated shipment planning and Kanban design

    E-Print Network [OSTI]

    Rizvi, Syed Zia Abbas

    2009-01-01T23:59:59.000Z

    The project work presented in this thesis has proposed solutions related to the control of production and work-in-process inventory in a multi-item multi-stage manufacturing system. A suitable base-stock inventory control ...

  18. Interface and process for enhanced transmission of non-circular ion beams between stages at unequal pressure

    DOE Patents [OSTI]

    Tang, Keqi (Richland, WA); Shvartsburg, Alexandre A. (Richland, WA); Smith, Richard D. (Richland, WA)

    2008-03-04T23:59:59.000Z

    The invention discloses a new interface with non-circular conductance limit aperture(s) useful for effective transmission of non-circular ion beams between stages with different gas pressure. In particular, the invention provides an improved coupling of field asymmetric waveform ion mobility spectrometry (FAIMS) analyzers of planar or side-to-side geometry to downstream stages such as mass spectrometry or ion mobility spectrometry. In this case, the non-circular aperture is rectangular; other geometries may be optimum in other applications. In the preferred embodiment, the non-circular aperture interface is followed by an electrodynamic ion funnel that may focus wide ion beams of any shape into tight circular beams with virtually no losses. The jet disrupter element of the funnel may also have a non-circular geometry, matching the shape of arriving ion beam. The improved sensitivity of planar FAIMS/MS has been demonstrated in experiments using a non-contiguous elongated aperture but other embodiments (e.g., with a contiguous slit aperture) may be preferable, especially in conjunction with an ion funnel operated at high pressures.

  19. Sulfur removal in advanced two stage pressurized fluidized bed combustion. Technical report, September 1--November 30, 1994

    SciTech Connect (OSTI)

    Abbasian, J.; Hill, A.; Wangerow, J.R. [Inst. of Gas Technology, Chicago, IL (United States)

    1994-12-31T23:59:59.000Z

    The objective of this study is to obtain data on the rates and the extent of sulfation reactions involving partially sulfided calcium-based sorbents, and oxygen as well as sulfur dioxide, at operating conditions closely simulating those prevailing in the second stage (combustor) of Advanced Two-Stage Pressurized Fluidized-Bed Combustors (PFBC). In these systems the CO{sub 2} partial pressure generally exceeds the equilibrium value for calcium carbonate decomposition. Therefore, calcium sulfate is produced through the reactions between SO{sub 2} and calcium carbonate as well as the reaction between calcium sulfide and oxygen. To achieve this objective, the rates of reaction involving SO{sub 2} and oxygen (gaseous reactant); and calcium sulfide and calcium carbonate (solid reactants), will be determined by conducting tests in a pressurized thermogravimetric analyzer (HPTGA) unit. The effects of sorbent type, sorbent particle size, reactor temperature and pressure; and O{sub 2} as well as SO{sub 2} partial pressures on the sulfation reactions rate will be determined. During this quarter, samples of the selected limestone and dolomite were sulfided in the fluidized-bed reactor. These tests were conducted in both calcining and non-calcining operating conditions to produce partially-sulfided sorbents containing calcium oxide and calcium carbonate, respectively. These samples which represent the carbonizer discharge material, will be used as the feed material in the sulfation tests to be conducted in the HPTGA unit during the next quarter.

  20. Hanford Spent Nuclear Fuel Project evaluation of multi-canister overpack venting and monitoring options during staging of K basins fuel

    SciTech Connect (OSTI)

    Wiborg, J.C.

    1995-12-01T23:59:59.000Z

    This engineering study recommends whether multi-canister overpacks containing spent nuclear fuel from the Hanford K Basins should be staged in vented or a sealed, but ventable, condition during staging at the Canister Storage Building prior to hot vacuum conditioning and interim storage. The integrally related issues of MCO monitoring, end point criteria, and assessing the practicality of avoiding venting and Hot Vacuum Conditioning for a portion of the spent fuel are also considered.

  1. Klondike III/Biglow Canyon Wind Integration Project; Record of Decision, October 25, 2006.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration

    2006-10-25T23:59:59.000Z

    The Bonneville Power Administration (BPA) has decided to implement the Proposed Action identified in the Klondike III/Biglow Canyon Wind Integration Project Final Environmental Impact Statement (FEIS) (DOE/EIS-0374, September 2006). Under the Proposed Action, BPA will offer PPM Energy, Inc. (PPM) contract terms for interconnection of the proposed Klondike III Wind Project, located in Sherman County, Oregon, with the Federal Columbia River Transmission System (FCRTS). BPA will also offer Portland General Electric (PGE)1 contract terms for interconnection of its proposed Biglow Canyon Wind Farm, also located in Sherman County, Oregon, with the FCRTS, as proposed in the FEIS. To interconnect these wind projects, BPA will build and operate a 12-mile long, 230-kilovolt (kV) double-circuit transmission line between the wind projects and BPA's new 230-kV John Day Substation in Sherman County, Oregon. BPA will also expand its existing 500-kV John Day Substation.

  2. Telephone Flat Geothermal Development Project Environmental Impact Statement Environmental Impact Report. Final

    SciTech Connect (OSTI)

    None

    1999-02-01T23:59:59.000Z

    This Final Environmental Impact Statement and Environmental Impact Report (Final EIS/EIR) has been prepared to meet the requirements of the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). The Proposed Action includes the construction, operation, and decommissioning of a 48 megawatt (gross) geothermal power plant with ancillary facilities (10-12 production well pads and 3-5 injection well pads, production and injection pipelines), access roads, and a 230-kilovolt (kV) transmission line in the Modoc National Forest in Siskiyou County, California. Alternative locations for the power plant site within a reasonable distance of the middle of the wellfield were determined to be technically feasible. Three power plant site alternatives are evaluated in the Final EIS/EIR.

  3. Long-term results of high-dose-rate brachytherapy in the primary treatment of medically inoperable stage I-II endometrial carcinoma

    SciTech Connect (OSTI)

    Niazi, Tamim M. [Department of Oncology, Division of Radiation Oncology, McGill University, Montreal, Quebec (Canada); Souhami, Luis [Department of Oncology, Division of Radiation Oncology, McGill University, Montreal, Quebec (Canada)]. E-mail: luis.souhami@muhc.mcgill.ca; Portelance, Lorraine [Department of Oncology, Division of Radiation Oncology, McGill University, Montreal, Quebec (Canada); Bahoric, Boris [Department of Oncology, Division of Radiation Oncology, McGill University, Montreal, Quebec (Canada); Gilbert, Lucy [Department of Oncology, Division of Gynecology Oncology, McGill University, Montreal, Quebec (Canada); Stanimir, Gerald [Department of Oncology, Division of Gynecology Oncology, McGill University, Montreal, Quebec (Canada)

    2005-11-15T23:59:59.000Z

    Purpose: Total-abdominal hysterectomy and bilateral salpingo-oophorectomy (TAHBSO) is the gold-standard therapy for patients with endometrial carcinoma. However, patients with high operative risks are usually treated with radiation therapy (RT) alone. The goal of this study was to update our experience of high-dose-rate brachytherapy (HDRB), with or without external-beam irradiation (EBRT), for such patients. Methods and Materials: Between 1984 and 2003, 38 patients with Stage I and Stage II adenocarcinoma of the endometrium considered high operative risk received RT as the primary treatment. The median age was 74.1 years. Before 1996, the local extent of the disease was assessed by an examination under anesthesia (EUA) and by EUA and magnetic resonance imaging (MRI) thereafter. Eight patients (21%) were treated with combined HDRB and EBRT, and 30 patients (79%) were treated with with HDRB alone. The median HDRB dose was 23.9 Gy, typically delivered in 3 fractions in a weekly schedule. The median EBRT dose was 42 Gy. Results: At a median follow-up of 57.5 months for patients at risk, 11 patients (29%) have failed: 6 patients (16%) locally, 4 patients (10.5%) distantly, and 1 patient (3%) locally and distantly. Local failure was established by biopsy, and 4 patients were salvaged by TAHBSO. Higher stage and higher grade were both associated with increased failure rate. The 15-year disease-specific survival (DSS) was 78% for all stages, 90% for Stage I, and 42% for Stage II (p < 0.0001). The 15-year DSS was 91% for Grade I and 67% for Grade II and III combined (p = 0.0254). Patients with Stage I disease established by MRI (11 patients) and who received a total HDRB dose of 30 Gy had a DSS rate of 100% at 10 years. Four patients experienced late toxicities: 1 Grade II and 3 Grade III or IV. Conclusion: Medically inoperable Stage I endometrial carcinoma may be safely and effectively treated with HDRB as the primary therapy. In selected Stage I patients, our results are equivalent to that of surgery. We believe that the alternative option of HDRB as the primary therapy for selected Stage I endometrial carcinoma, even in patients with low operative risks, needs further evaluation.

  4. Phase-based x-ray scattering—A possible method to detect cancer cells in a very early stage

    SciTech Connect (OSTI)

    Feye-Treimer, U., E-mail: feye-treimer@helmholtz-berlin.de; Treimer, W. [Department of Mathematics, Physics and Chemistry, University of Applied Sciences, D-13353 Berlin, Germany and Joint Department G-GTOMO, Helmholtz Zentrum fuer Materialien und Energie Berlin, D-14109 Berlin (Germany)] [Department of Mathematics, Physics and Chemistry, University of Applied Sciences, D-13353 Berlin, Germany and Joint Department G-GTOMO, Helmholtz Zentrum fuer Materialien und Energie Berlin, D-14109 Berlin (Germany)

    2014-05-15T23:59:59.000Z

    Purpose: This theoretical work contains a detailed investigation of the potential and sensitivity of phase-based x-ray scattering for cancer detection in biopsies if cancer is in a very early stage of development. Methods: Cancer cells in their early stage of development differ from healthy ones mainly due to their faster growing cell nuclei and the enlargement of their densities. This growth is accompanied by an altered nucleus–plasma relation for the benefit of the cell nuclei, that changes the physical properties especially the index of refraction of the cell and the one of the cell nuclei. Interaction of radiation with matter is known to be highly sensitive to small changes of the index of refraction of matter; therefore a detection of such changes of volume and density of cell nuclei by means of high angular resolved phase-based scattering of x rays might provide a technique to distinguish malignant cells from healthy ones ifthe cell–cell nucleus system is considered as a coherent phase shifting object. Then one can observe from a thin biopsy which represents a monolayer of cells (no multiple scattering) that phase-based x-ray scattering curves from healthy cells differ from those of cancer cells in their early stage of development. Results: Detailed calculations of x-ray scattering patterns from healthy and cancer cell nuclei yield graphs and numbers with which one can distinguish healthy cells from cancer ones, taking into account that both kinds of cells occur in a tissue within a range of size and density. One important result is the role and the influence of the (lateral) coherence width of the radiation on the scattering curves and the sensitivity of phase-based scattering for cancer detection. A major result is that a larger coherence width yields a larger sensitivity for cancer detection. Further import results are calculated limits for critical sizes and densities of cell nuclei in order to attribute the investigated tissue to be healthy or diseased. Conclusions: With this proposed method it should be in principle possible to detect cancer cells in apparently healthy tissues in biopsies and/or in samples of the far border region of abscised or excised tissues. Thus this method could support established methods in diagnostics of cancer-suspicious samples.

  5. Can Locoregional Treatment of the Primary Tumor Improve Outcomes for Women With Stage IV Breast Cancer at Diagnosis?

    SciTech Connect (OSTI)

    Nguyen, David H.A., E-mail: dhanguyen@yahoo.com [British Columbia Cancer Agency, Department of Radiation Oncology, BC (Canada); Departement de Radio-Oncologie, Hopital Maisonneuve-Rosemont, Montreal, Quebec (Canada); Truong, Pauline T. [British Columbia Cancer Agency, Department of Radiation Oncology, BC (Canada) [British Columbia Cancer Agency, Department of Radiation Oncology, BC (Canada); Breast Cancer Outcomes Unit, British Columbia Cancer Agency, BC (Canada); University of British Columbia, BC (Canada); Alexander, Cheryl; Walter, Caroline V.; Hayashi, Emily; Christie, Jennifer [Breast Cancer Outcomes Unit, British Columbia Cancer Agency, BC (Canada)] [Breast Cancer Outcomes Unit, British Columbia Cancer Agency, BC (Canada); Lesperance, Mary [Department of Mathematics and Statistics, University of Victoria, BC (Canada)] [Department of Mathematics and Statistics, University of Victoria, BC (Canada)

    2012-09-01T23:59:59.000Z

    Purpose: To examine the effect of locoregional treatment (LRT) of the primary tumor on survival in patients with Stage IV breast cancer at diagnosis. Methods and Materials: The study cohort comprised 733 women referred to the British Columbia Cancer Agency between 1996 and 2005 with newly diagnosed clinical or pathologic M1 breast cancer. Tumor and treatment characteristics, overall survival (OS), and locoregional progression-free survival were compared between patients treated with (n = 378) and without (n = 355) LRT of the primary disease. Multivariable analysis was performed with Cox regression modeling. Results: The median follow-up time was 1.9 years. LRT consisted of surgery alone in 67% of patients, radiotherapy alone in 22%, and both in 11%. LRT was used more commonly in women with age <50 years, Eastern Cooperative Oncology Group (ECOG) performance status 0-1, Stage T1-2 tumors, N0-1 disease, limited M1 burden, and asymptomatic M1 disease (all p < 0.05). Systemic therapy was used in 92% of patients who underwent LRT and 85% of patients who did not. In patients treated with LRT compared with those without LRT, the 5-year OS rates were 21% vs. 14% (p < 0.001), and the rates of locoregional progression-free survival were 72% vs. 46% (p < 0.001). Among 378 patients treated with LRT, the rates of 5-year OS were higher in patients with age <50, ECOG performance status 0-1, estrogen receptor-positive disease, clear surgical margins, single subsite, bone-only metastasis, and one to four metastatic lesions (all p < 0.003). On multivariable analysis, LRT was associated with improved OS (hazard ratio, 0.78; 95% confidence interval, 0.64-0.94, p = 0.009). Conclusion: Locoregional treatment of the primary disease is associated with improved survival in some women with Stage IV breast cancer at diagnosis. Among those treated with LRT, the most favorable rates of survival were observed in subsets with young age, good performance status, estrogen receptor-positive disease, clear margins, and distant disease limited to one subsite, bone-only involvement, or fewer than five metastatic lesions.

  6. PROBING THE EARLIEST STAGE OF PROTOSTELLAR EVOLUTION-BARNARD 1-bN AND BARNARD 1-bS

    SciTech Connect (OSTI)

    Huang, Yun-Hsin [Institute of Astrophysics, National Taiwan University, Taipei 10617, Taiwan, ROC (China)] [Institute of Astrophysics, National Taiwan University, Taipei 10617, Taiwan, ROC (China); Hirano, Naomi, E-mail: yunhsin@asiaa.sinica.edu.tw [Academia Sinica, Institute of Astronomy and Astrophysics, P.O. Box 23141, Taipei 106, Taiwan, ROC (China)] [Academia Sinica, Institute of Astronomy and Astrophysics, P.O. Box 23141, Taipei 106, Taiwan, ROC (China)

    2013-04-01T23:59:59.000Z

    Two submm/mm sources in the Barnard 1b (B1-b) core, B1-bN and B1-bS, have been observed with the Submillimeter Array (SMA) and the Submillimeter Telescope (SMT). The 1.1 mm continuum map obtained with the SMA reveals that the two sources contain spatially compact components, suggesting that they harbor protostars. The N{sub 2}D{sup +} and N{sub 2}H{sup +} J = 3-2 maps were obtained by combining the SMA and SMT data. The N{sub 2}D{sup +} map clearly shows two peaks at the continuum positions. The N{sub 2}H{sup +} map also peaks at the continuum positions, but is more dominated by the spatially extended component. The N{sub 2}D{sup +}/N{sub 2}H{sup +} ratio was estimated to be {approx}0.2 at the positions of both B1-bN and B1-bS. The derived N{sub 2}D{sup +}/N{sub 2}H{sup +} ratio is comparable to those of the prestellar cores in the late evolutionary stage and the class 0 protostars in the early evolutionary stage. Although B1-bN is bright in N{sub 2}H{sup +} and N{sub 2}D{sup +}, this source was barely seen in H{sup 13}CO{sup +}. This implies that the depletion of carbon-bearing molecules is significant in B1-bN. The chemical property suggests that B1-bN is in the earlier evolutionary stage as compared to B1-bS with the H{sup 13}CO{sup +} counterpart. The N{sub 2}H{sup +} and N{sub 2}D{sup +} lines show that the radial velocities of the two sources are different by {approx}0.9 km s{sup -1}. However, the velocity pattern along the line through B1-bN and B1-bS suggests that these two sources were not formed out of a single rotating cloud. It is likely that the B1-b core consists of two velocity components, each of which harbors a very young source.

  7. Improved Survival Endpoints With Adjuvant Radiation Treatment in Patients With High-Risk Early-Stage Endometrial Carcinoma

    SciTech Connect (OSTI)

    Elshaikh, Mohamed A., E-mail: melshai1@hfhs.org [Department of Radiation Oncology, Henry Ford Hospital, Detroit, Michigan (United States); Vance, Sean; Suri, Jaipreet S. [Department of Radiation Oncology, Henry Ford Hospital, Detroit, Michigan (United States); Mahan, Meredith [Public Health Science, Henry Ford Hospital, Detroit, Michigan (United States); Munkarah, Adnan [Division of Gynecologic Oncology, Department of Women's Health Services, Henry Ford Hospital, Detroit, Michigan (United States)

    2014-02-01T23:59:59.000Z

    Purpose/Objective(s): To determine the impact of adjuvant radiation treatment (RT) on recurrence-free survival (RFS), disease-specific survival (DSS), and overall survival (OS) in patients with high-risk 2009 International Federation of Gynecology and Obstetrics stage I-II endometrial carcinoma. Methods and Materials: We identified 382 patients with high-risk EC who underwent hysterectomy. RFS, DSS, and OS were calculated from the date of hysterectomy by use of the Kaplan-Meier method. Cox regression modeling was used to explore the risks associated with various factors on survival endpoints. Results: The median follow-up time for the study cohort was 5.4 years. The median age was 71 years. All patients underwent hysterectomy and salpingo-oophorectomy, 93% had peritoneal cytology, and 85% underwent lymphadenectomy. Patients with endometrioid histology constituted 72% of the study cohort, serous in 16%, clear cell in 7%, and mixed histology in 4%. Twenty-three percent of patients had stage II disease. Adjuvant management included RT alone in 220 patients (57%), chemotherapy alone in 25 patients (7%), and chemoradiation therapy in 27 patients (7%); 110 patients (29%) were treated with close surveillance. The 5-year RFS, DSS, and OS were 76%, 88%, and 73%, respectively. On multivariate analysis, adjuvant RT was a significant predictor of RFS (P<.001) DSS (P<.001), and OS (P=.017). Lymphovascular space involvement was a significant predictor of RFS and DSS (P<.001). High tumor grade was a significant predictor for RFS (P=.038) and DSS (P=.025). Involvement of the lower uterine segment was also a predictor of RFS (P=.049). Age at diagnosis and lymphovascular space involvement were significant predictors of OS: P<.001 and P=.002, respectively. Conclusion: In the treatment of patients with high-risk features, our study suggests that adjuvant RT significantly improves recurrence-free, disease-specific, and overall survival in patients with early-stage endometrial carcinoma. Furthermore, adjuvant RT is an independent predictor for RFS, DSS, and OS in this group of patients. These findings need validation from a prospective randomized study.

  8. Aluminum and tungsten X-pinch experiments on 100 kA, 100 ns linear transformer driver stage

    SciTech Connect (OSTI)

    Wu Jian [Department of Engineering Physics, Tsinghua University, Beijing 10086 (China); Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Sun Tieping; Wu Gang; Wang Liangping; Han Juanjuan; Li Mo; Cong Peitian; Qiu Aici [Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Lv Min [Department of Engineering Physics, Tsinghua University, Beijing 10086 (China)

    2011-05-15T23:59:59.000Z

    X-pinch experiments have been carried out on a 100 kA, 100 ns linear transformer driver stage recently built up. The X-pinches exhibited a source size of about 10 {mu}m, a pulse duration of 3 ns, 3-5 keV radiation energy of 3.9 mJ, and a burst time jitter of tens of nanosecond with the 2-wire 8 {mu}m W X-pinch load. The generator output current and the X-pinch characteristics depended on the X-pinch wire materials in the tests. X-ray backlighting images from the insects showed the significant phase-contrast effect.

  9. Hot-stage transmission electron microscopy study of (Na, K)NbO{sub 3} based lead-free piezoceramics

    SciTech Connect (OSTI)

    Lu, Shengbo, E-mail: shengbo.lu@yahoo.com [Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon (Hong Kong); Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong); Xu, Zhengkui [Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon (Hong Kong); Kwok, K. W.; Chan, Helen L. W. [Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong)

    2014-07-28T23:59:59.000Z

    Hierarchical nanodomains assembled into micron-sized stripe domains, which is believed to be associated with outstanding piezoelectric properties, were observed at room temperature in a typical lead free piezoceramics, (Na{sub 0.52}K{sub 0.48?x})(Nb{sub 0.95?x}Ta{sub 0.05})-xLiSbO{sub 3}, with finely tuned polymorphic phase boundaries (x?=?0.0465) by transmission electron microscopy. The evolution of domain morphology and crystal structure under heating and cooling cycles in the ceramic was investigated by in-situ hot stage study. It is found that the nanodomains are irreversibly transformed into micron-sized rectangular domains during heating and cooling cycles, which lead to the thermal instability of piezoelectric properties of the materials.

  10. First principles investigation of the initial stage of H-induced missing-row reconstruction of Pd(110) surface

    SciTech Connect (OSTI)

    Padama, Allan Abraham B. [Department of Applied Physics, Osaka University, Suita, Osaka 565-0871 (Japan); Kasai, Hideaki, E-mail: kasai@dyn.ap.eng.osaka-u.ac.jp [Department of Applied Physics, Osaka University, Suita, Osaka 565-0871 (Japan); Center for Atomic and Molecular Technologies, Osaka University, Suita, Osaka 565-0871 (Japan)

    2014-06-28T23:59:59.000Z

    The pathway of H diffusion that will induce the migration of Pd atom is investigated by employing first principles calculations based on density functional theory to explain the origin of missing-row reconstruction of Pd(110).The calculated activation barrier and the H-induced reconstruction energy reveal that the long bridge-to-tetrahedral configuration is the energetically favored process for the initial stage of reconstruction phenomenon. While the H diffusion triggers the migration of Pd atom, it is the latter process that significantly contributes to the activated missing-row reconstruction of Pd(110). Nonetheless, the strong interaction between the diffusing H and the Pd atoms dictates the occurrence of reconstructed surface.

  11. Outcomes and Effect of Radiotherapy in Patients With Stage I or II Diffuse Large B-Cell Lymphoma: A Surveillance, Epidemiology, and End Results Analysis

    SciTech Connect (OSTI)

    Ballonoff, Ari [Department of Radiation Oncology, University of Colorado Health Sciences Center, Aurora, CO (United States)], E-mail: ari.ballonoff@uchsc.edu; Rusthoven, Kyle E.; Schwer, Amanda; McCammon, Robert; Kavanagh, Brian; Bassetti, Michael; Newman, Francis; Rabinovitch, Rachel [Department of Radiation Oncology, University of Colorado Health Sciences Center, Aurora, CO (United States)

    2008-12-01T23:59:59.000Z

    Purpose: To assess disease-specific survival (DSS), overall survival (OS), and the effect of radiotherapy (RT) in patients with localized diffuse large B-cell lymphoma (DLBCL). Patients and Methods: The Surveillance, Epidemiology, and End Results database was queried for all patients diagnosed with Stage I, IE, II, or IIE DLBCL between 1988 and 2004. The analyzable data included gender, age, race, stage, presence of extranodal disease, and RT administration. Patients who had died or were lost to follow-up within 6 months of diagnosis were excluded. Results: A total of 13,420 patients met the search criteria. Of these, 5,547 (41%) had received RT and 7,873 (59%) had not. RT was associated with a significant DSS (hazard ratio, 0.82, p <0.0001) and OS benefit that persisted during the 15 years of follow-up. Elderly patients, defined either as those >60 or >70 years old, had significantly improved DSS and OS associated with RT. On multivariate analysis, RT was significantly associated with increased DSS and OS. The 5-year DSS outcomes were highly variable among patient subsets, defined by age, stage, and extranodal disease (range for RT-treated patients, 70% for Stage II, age >60 years to 87% for Stage I, age {<=}60 years). Conclusion: This analysis presents the largest detailed data set of Stage I-II DLBCL patients. The results of our study have demonstrated that RT is associated with a survival advantage in patients with localized DLBCL, a benefit that extends to elderly patients. Outcomes for discrete patient subsets varied greatly. The development of tailored therapy according to the relapse risk is warranted, rather than uniform treatment of all early-stage DLBCL.

  12. Locally Advanced Stage IV Squamous Cell Carcinoma of the Head and Neck: Impact of Pre-Radiotherapy Hemoglobin Level and Interruptions During Radiotherapy

    SciTech Connect (OSTI)

    Rades, Dirk [Department of Radiation Oncology, University Hospital Schleswig-Holstein, Campus Luebeck, Luebeck (Germany); Department of Radiation Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (Germany)], E-mail: Rades.Dirk@gmx.net; Stoehr, Monika [Department of Radiation Oncology, University Hospital Schleswig-Holstein, Campus Luebeck, Luebeck (Germany); Kazic, Nadja [Department of Radiation Oncology, University Hospital Sarajevo, Sarajevo(Bosnia and Herzegowina); Hakim, Samer G. [Department of Oral and Maxillofacial Surgery, University Hospital Schleswig-Holstein, Campus Luebeck, Luebeck (Germany); Walz, Annette [Department of Head and Neck Surgery, University Hospital Schleswig-Holstein, Campus Luebeck, Luebeck (Germany); Schild, Steven E. [Department of Radiation Oncology, Mayo Clinic Scottsdale, AZ (United States); Dunst, Juergen [Department of Radiation Oncology, University Hospital Schleswig-Holstein, Campus Luebeck, Luebeck (Germany)

    2008-03-15T23:59:59.000Z

    Purpose: Stage IV head and neck cancer patients carry a poor prognosis. Clear understanding of prognostic factors can help to optimize care for the individual patient. This study investigated 11 potential prognostic factors including pre-radiotherapy hemoglobin level and interruptions during radiotherapy for overall survival (OS), metastases-free survival (MFS), and locoregional control (LC) after radiochemotherapy. Methods and Materials: Eleven factors were investigated in 153 patients receiving radiochemotherapy for Stage IV squamous cell head and neck cancer: age, gender, Karnofsky performance score (KPS), tumor site, grading, T stage, N stage, pre-radiotherapy hemoglobin level, surgery, chemotherapy type, and interruptions during radiotherapy >1 week. Results: On multivariate analysis, improved OS was associated with KPS 90-100 (relative risk [RR], 2.36; 95% confidence interval [CI], 1.20-4.93; p = .012), hemoglobin {>=}12 g/dL (RR, 1.88; 95% CI, 1.01-3.53; p = .048), and no radiotherapy interruptions (RR, 2.59; 95% CI, 1.15-5.78; p = .021). Improved LC was significantly associated with lower T stage (RR, 2.17; 95% CI, 1.16-4.63; p = .013), hemoglobin {>=}12 g/dL (RR, 4.12; 95% CI, 1.92-9.09; p < .001), surgery (RR, 2.67; 95% CI, 1.28-5.88; p = .008), and no radiotherapy interruptions (RR, 3.32; 95% CI, 1.26-8.79; p = .015). Improved MFS was associated with KPS 90-100 (RR, 3.41; 95% CI, 1.46-8.85; p = .012). Conclusions: Significant predictors for outcome in Stage IV head and neck cancer were performance status, stage, surgery, pre-radiotherapy hemoglobin level, and interruptions during radiotherapy >1 week. It appears important to avoid anemia and radiotherapy interruptions to achieve the best treatment results.

  13. Outcomes of Patients With Revised Stage I Clear Cell Sarcoma of Kidney Treated in National Wilms Tumor Studies 1-5

    SciTech Connect (OSTI)

    Kalapurakal, John A., E-mail: j-kalapurakal@northwestern.edu [Northwestern University, Chicago, Illinois (United States); Perlman, Elizabeth J. [Northwestern University, Chicago, Illinois (United States)] [Northwestern University, Chicago, Illinois (United States); Seibel, Nita L. [Cancer Therapy and Evaluation Program, Bethesda, Maryland (United States)] [Cancer Therapy and Evaluation Program, Bethesda, Maryland (United States); Ritchey, Michael [Phoenix Children's Hospital, Phoenix, Arizona (United States)] [Phoenix Children's Hospital, Phoenix, Arizona (United States); Dome, Jeffrey S. [Children's National Medical Center, Washington, District of Columbia (United States)] [Children's National Medical Center, Washington, District of Columbia (United States); Grundy, Paul E. [University of Alberta, Edmonton, AB (Canada)] [University of Alberta, Edmonton, AB (Canada)

    2013-02-01T23:59:59.000Z

    Purpose: To report the clinical outcomes of children with revised stage I clear cell sarcoma of the kidney (CCSK) using the National Wilms Tumor Study Group (NWTS)-5 staging criteria after multimodality treatment on NWTS 1-5 protocols. Methods and Materials: All CCSK patients enrolled in the National Wilms Tumor Study Group protocols had their pathology slides reviewed, and only those determined to have revised stage I tumors according to the NWTS-5 staging criteria were included in the present analysis. All patients were treated with multimodality therapy according to the NWTS 1-5 protocols. Results: A total of 53 children were identified as having stage I CCSK. All patients underwent primary surgery with radical nephrectomy. The chemotherapy regimens used were as follows: regimen A, C, F, or EE in 4 children (8%); regimen DD or DD4A in 33 children (62%); regimen J in 4 children (8%); and regimen I in 12 children (22%). Forty-six patients (87%) received flank radiation therapy (RT). Seven children (13%) did not receive flank RT. The median delay between surgery and the initiation of RT was 9 days (range, 3-61). The median RT dose was 10.8 Gy (range, 10-36). The flank RT doses were as follows: 10.5 or 10.8 Gy in 25 patients (47%), 11-19.9 Gy in 2 patients (4%), 20-29.9 Gy in 9 patients (17%), and 30-40 Gy in 10 patients (19%). The median follow-up for the entire group was 17 years (range, 2-36). The relapse-free and cancer-specific survival rate was 100% at the last follow-up examination. Conclusions: The present results have demonstrated that children with revised stage I CCSK using the NWTS-5 staging criteria have excellent survival rates despite the use of varying RT doses and chemotherapy regimens in the NWTS 1-5 protocols.

  14. Stage III Melanoma in the Axilla: Patterns of Regional Recurrence After Surgery With and Without Adjuvant Radiation Therapy

    SciTech Connect (OSTI)

    Pinkham, Mark B., E-mail: mark.pinkham@health.qld.gov.au [Department of Radiation Oncology, Princess Alexandra Hospital, Brisbane (Australia); University of Queensland, Brisbane (Australia); Foote, Matthew C. [Department of Radiation Oncology, Princess Alexandra Hospital, Brisbane (Australia) [Department of Radiation Oncology, Princess Alexandra Hospital, Brisbane (Australia); Queensland Melanoma Project, Princess Alexandra Hospital, Brisbane (Australia); Diamantina Institute, Brisbane (Australia); University of Queensland, Brisbane (Australia); Burmeister, Elizabeth [Nursing Practice Development Unit, Princess Alexandra Hospital, Brisbane (Australia) [Nursing Practice Development Unit, Princess Alexandra Hospital, Brisbane (Australia); Research Centre for Clinical and Community Practice, Griffith University, Brisbane (Australia); Thomas, Janine [Queensland Melanoma Project, Princess Alexandra Hospital, Brisbane (Australia)] [Queensland Melanoma Project, Princess Alexandra Hospital, Brisbane (Australia); Meakin, Janelle [Clinical Trials Research Unit, Princess Alexandra Hospital, Brisbane (Australia)] [Clinical Trials Research Unit, Princess Alexandra Hospital, Brisbane (Australia); Smithers, B. Mark [Queensland Melanoma Project, Princess Alexandra Hospital, Brisbane (Australia) [Queensland Melanoma Project, Princess Alexandra Hospital, Brisbane (Australia); University of Queensland, Brisbane (Australia); Burmeister, Bryan H. [Department of Radiation Oncology, Princess Alexandra Hospital, Brisbane (Australia) [Department of Radiation Oncology, Princess Alexandra Hospital, Brisbane (Australia); Queensland Melanoma Project, Princess Alexandra Hospital, Brisbane (Australia); University of Queensland, Brisbane (Australia)

    2013-07-15T23:59:59.000Z

    Purpose: To describe the anatomic distribution of regionally recurrent disease in patients with stage III melanoma in the axilla after curative-intent surgery with and without adjuvant radiation therapy. Methods and Materials: A single-institution, retrospective analysis of a prospective database of 277 patients undergoing curative-intent treatment for stage III melanoma in the axilla between 1992 and 2012 was completed. For patients who received radiation therapy and those who did not, patterns of regional recurrence were analyzed, and univariate analyses were performed to assess for potential factors associated with location of recurrence. Results: There were 121 patients who received adjuvant radiation therapy because their clinicopathologic features conferred a greater risk of regional recurrence. There were 156 patients who received no radiation therapy. The overall axillary control rate was 87%. There were 37 patients with regional recurrence; 17 patients had received adjuvant radiation therapy (14%), and 20 patients (13%) had not. The likelihood of in-field nodal recurrence was significantly less in the adjuvant radiation therapy group (P=.01) and significantly greater in sites adjacent to the axilla (P=.02). Patients with high-risk clinicopathologic features who did not receive adjuvant radiation therapy also tended to experience in-field failure rather than adjacent-field failure. Conclusions: Patients who received adjuvant radiation therapy were more likely to experience recurrence in the adjacent-field regions rather than in the in-field regions. This may not simply reflect higher-risk pathology. Using this data, it may be possible to improve outcomes by reducing the number of adjacent-field recurrences after adjuvant radiation therapy.

  15. Dynamic Modeling and Control Studies of a Two-Stage Bubbling Fluidized Bed Adsorber-Reactor for Solid-Sorbent CO{sub 2} Capture

    SciTech Connect (OSTI)

    Modekurti, Srinivasarao; Bhattacharyya, Debangsu; Zitney, Stephen E.

    2013-07-31T23:59:59.000Z

    A one-dimensional, non-isothermal, pressure-driven dynamic model has been developed for a two-stage bubbling fluidized bed (BFB) adsorber-reactor for solid-sorbent carbon dioxide (CO{sub 2}) capture using Aspen Custom Modeler® (ACM). The BFB model for the flow of gas through a continuous phase of downward moving solids considers three regions: emulsion, bubble, and cloud-wake. Both the upper and lower reactor stages are of overflow-type configuration, i.e., the solids leave from the top of each stage. In addition, dynamic models have been developed for the downcomer that transfers solids between the stages and the exit hopper that removes solids from the bottom of the bed. The models of all auxiliary equipment such as valves and gas distributor have been integrated with the main model of the two-stage adsorber reactor. Using the developed dynamic model, the transient responses of various process variables such as CO{sub 2} capture rate and flue gas outlet temperatures have been studied by simulating typical disturbances such as change in the temperature, flowrate, and composition of the incoming flue gas from pulverized coal-fired power plants. In control studies, the performance of a proportional-integral-derivative (PID) controller, feedback-augmented feedforward controller, and linear model predictive controller (LMPC) are evaluated for maintaining the overall CO{sub 2} capture rate at a desired level in the face of typical disturbances.

  16. Improvements to laser wakefield accelerated electron beam stability, divergence, and energy spread using three-dimensional printed two-stage gas cell targets

    SciTech Connect (OSTI)

    Vargas, M.; Schumaker, W.; He, Z.-H.; Zhao, Z.; Behm, K.; Chvykov, V.; Hou, B.; Krushelnick, K.; Maksimchuk, A.; Yanovsky, V.; Thomas, A. G. R., E-mail: agrt@umich.edu [Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109 (United States)

    2014-04-28T23:59:59.000Z

    High intensity, short pulse lasers can be used to accelerate electrons to ultra-relativistic energies via laser wakefield acceleration (LWFA) [T. Tajima and J. M. Dawson, Phys. Rev. Lett. 43, 267 (1979)]. Recently, it was shown that separating the injection and acceleration processes into two distinct stages could prove beneficial in obtaining stable, high energy electron beams [Gonsalves et al., Nat. Phys. 7, 862 (2011); Liu et al., Phys. Rev. Lett. 107, 035001 (2011); Pollock et al., Phys. Rev. Lett. 107, 045001 (2011)]. Here, we use a stereolithography based 3D printer to produce two-stage gas targets for LWFA experiments on the HERCULES laser system at the University of Michigan. We demonstrate substantial improvements to the divergence, pointing stability, and energy spread of a laser wakefield accelerated electron beam compared with a single-stage gas cell or gas jet target.

  17. Requirements Definition Stage

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

    1997-05-21T23:59:59.000Z

    This chapter addresses development of a Software Configuration Management Plan to track and control work products, analysis of the system owner/users' business processes and needs, translation of those processes and needs into formal requirements, and planning the testing activities to validate the performance of the software product.

  18. Installation and Acceptance Stage

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

    1997-05-21T23:59:59.000Z

    This chapter addresses activities required to install the software, data bases, or data that comprise the software product onto the hardware platform at sites of operation.

  19. Stages of Project Development

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

    1997-03-28T23:59:59.000Z

    The chapter describes the various estimates and their relationship to each other as well as to the key decisions.

  20. Stage Management & Technology

    E-Print Network [OSTI]

    O'Brien, Madison D

    2013-02-04T23:59:59.000Z

    networking, VirtualCallboard, and the iPad. These tools are employed to analyze communication across the production team. The intention is to eliminate the need for paper documentation and duplication while increasing the effectiveness of communication...

  1. The Cage Stage | EMSL

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

    to protect environmentally critical catalysts Effective metal catalysts are vital to pollution prevention and clean energy production, and thus central to the interests of the...

  2. Two-stage Framework

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSS A-Zandofpoint motional Stark effect

  3. Early-Stage Breast Cancer Treated With 3-Week Accelerated Whole-Breast Radiation Therapy and Concomitant Boost

    SciTech Connect (OSTI)

    Chadha, Manjeet, E-mail: MChadha@chpnet.org [Department of Radiation Oncology, Beth Israel Medical Center, New York, New York (United States)] [Department of Radiation Oncology, Beth Israel Medical Center, New York, New York (United States); Woode, Rudolph; Sillanpaa, Jussi [Department of Radiation Oncology, Beth Israel Medical Center, New York, New York (United States)] [Department of Radiation Oncology, Beth Israel Medical Center, New York, New York (United States); Lucido, David [Department of Biostatistics, Beth Israel Medical Center, New York, New York (United States)] [Department of Biostatistics, Beth Israel Medical Center, New York, New York (United States); Boolbol, Susan K.; Kirstein, Laurie; Osborne, Michael P.; Feldman, Sheldon [Division of Breast Surgery, Beth Israel Medical Center, New York, New York (United States)] [Division of Breast Surgery, Beth Israel Medical Center, New York, New York (United States); Harrison, Louis B. [Department of Radiation Oncology, Beth Israel Medical Center, New York, New York (United States)] [Department of Radiation Oncology, Beth Israel Medical Center, New York, New York (United States)

    2013-05-01T23:59:59.000Z

    Purpose: To report early outcomes of accelerated whole-breast radiation therapy with concomitant boost. Methods and Materials: This is a prospective, institutional review board-approved study. Eligibility included stage TisN0, T1N0, and T2N0 breast cancer. Patients receiving adjuvant chemotherapy were ineligible. The whole breast received 40.5 Gy in 2.7-Gy fractions with a concomitant lumpectomy boost of 4.5 Gy in 0.3-Gy fractions. Total dose to the lumpectomy site was 45 Gy in 15 fractions over 19 days. Results: Between October 2004 and December 2010, 160 patients were treated; stage distribution was as follows: TisN0, n=63; T1N0, n=88; and T2N0, n=9. With a median follow-up of 3.5 years (range, 1.5-7.8 years) the 5-year overall survival and disease-free survival rates were 90% (95% confidence interval [CI] 0.84-0.94) and 97% (95% CI 0.93-0.99), respectively. Five-year local relapse-free survival was 99% (95% CI 0.96-0.99). Acute National Cancer Institute/Common Toxicity Criteria grade 1 and 2 skin toxicity was observed in 70% and 5%, respectively. Among the patients with ?2-year follow-up no toxicity higher than grade 2 on the Late Effects in Normal Tissues–Subjective, Objective, Management, and Analytic scale was observed. Review of the radiation therapy dose–volume histogram noted that ?95% of the prescribed dose encompassed the lumpectomy target volume in >95% of plans. The median dose received by the heart D{sub 05} was 215 cGy, and median lung V{sub 20} was 7.6%. Conclusions: The prescribed accelerated schedule of whole-breast radiation therapy with concomitant boost can be administered, achieving acceptable dose distribution. With follow-up to date, the results are encouraging and suggest minimal side effects and excellent local control.

  4. Local Recurrence in Women With Stage I Breast Cancer: Declining Rates Over Time in a Large, Population-Based Cohort

    SciTech Connect (OSTI)

    Canavan, Joycelin, E-mail: canavanjoycelin@gmail.com [Radiation Therapy Program and Breast Cancer Outcomes Unit, British Columbia Cancer Agency, Vancouver Island Centre, University of British Columbia, Victoria, British Columbia (Canada); Truong, Pauline T.; Smith, Sally L. [Radiation Therapy Program and Breast Cancer Outcomes Unit, British Columbia Cancer Agency, Vancouver Island Centre, University of British Columbia, Victoria, British Columbia (Canada); Lu, Linghong; Lesperance, Mary [Department of Mathematics and Statistics, University of Victoria, British Columbia (Canada); Olivotto, Ivo A. [Department of Radiation Oncology, Tom Baker Cancer Centre, University of Calgary (Canada)

    2014-01-01T23:59:59.000Z

    Purpose: To evaluate whether local recurrence (LR) risk has changed over time among women with stage I breast cancer treated with breast-conserving therapy. Methods and Materials: Subjects were 5974 women aged ?50 years diagnosis with pT1N0 breast cancer from 1989 to 2006, treated with breast-conserving surgery and radiation therapy. Clinicopathologic characteristics, treatment, and LR outcomes were compared among 4 cohorts stratified by year of diagnosis: 1989 to 1993 (n=1077), 1994 to 1998 (n=1633), 1999 to 2002 (n=1622), and 2003 to 2006 (n=1642). Multivariable analysis was performed, with year of diagnosis as a continuous variable. Results: Median follow-up time was 8.6 years. Among patients diagnosed in 1989 to 1993, 1994 to 1998, 1999 to 2002, and 2003 to 2006, the proportions of grade 1 tumors increased (16% vs 29% vs 40% vs 39%, respectively, P<.001). Surgical margin clearance rates increased from 82% to 93% to 95% and 88%, respectively (P<.001). Over time, the proportions of unknown estrogen receptor (ER) status decreased (29% vs 10% vs 1.2% vs 0.5%, respectively, P<.001), whereas ER-positive tumors increased (56% vs 77% vs 86% vs 86%, respectively, P<.001). Hormone therapy use increased (23% vs 23% vs 62% vs 73%, respectively, P<.001), and chemotherapy use increased (2% vs 5% vs 10% vs 13%, respectively, P<.001). The 5-year cumulative incidence rates of LR over the 4 time periods were 2.8% vs 1.7% vs 0.9% vs 0.8%, respectively (Gray's test, P<.001). On competing risk multivariable analysis, year of diagnosis was significantly associated with decreased LR (hazard ratio, 0.92 per year, P=.0003). Relative to grade 1 histology, grades 2, 3, and unknown were associated with increased LR. Hormone therapy use was associated with reduced LR. Conclusion: Significant changes in the multimodality management of stage I breast cancer have occurred over the past 2 decades. More favorable-risk tumors were diagnosed, and margin clearance and systemic therapy use increased. These changes contributed to the observed declining LR rates among patients treated with breast-conserving therapy.

  5. Condensed tannin concentration of cotton, Gossypium hirsutum L., as affected by planting date, population density, stage of growth and plant part sampled

    E-Print Network [OSTI]

    Lege, Ken Edward

    1990-01-01T23:59:59.000Z

    different. In 1989 planting date 2 averaged significantly higher condensed tannins than PD 1 or 3 (Table 3). The biological significance of this observation is unclear. Condensed tannin content of the TL and ML averaged over all other factors...). 17 Table 4. Condensed tannin content of cotton for 5 stages of growth, averaged over 3 planting dates, 6 genotypes, 2 plant parts and 2 years at College Station, TX. Stage of growth Condensed tannin fresh wt. 4th true leaf (4TL) Pinhead square...

  6. Assimilation, distribution, and losses of p14 sC-labeled photosynthate as affected by lateral branches and three ontogenetic stages of growth

    E-Print Network [OSTI]

    Brittin, Carolyn Louise

    1985-01-01T23:59:59.000Z

    of growth: mid-grain filling (MGF), ohysiological maturity (PM), and two-weeks post physiological maturity (PPN). PN 14 was determined as the time when the lowest kernels on the head had reached black layer. One plant was pulse-labeled in each... it is expected that a large portion of the assimilates from this leaf would be transported to the grain during grain 21 Table 1. Percent of the total assimilated C02 in parts at 14 3 ontogenetic stages of growth. Ontogenetic Stage Plant Part MGF PM PPM + S...

  7. Operating characteristics of a 7. 6 mm (0. 30 inch) diameter two-stage light-gas gun

    SciTech Connect (OSTI)

    Susoeff, A R; Hawke, R S; Bowen, P R; Greenwood, D W; Marshall, F R

    1992-07-01T23:59:59.000Z

    a series of tests was conducted to determine the operating requirements needed to obtain maximum projectile velocity within the engineering design limits of a two-stage light-gas gun with a 7.6 mm (0.30 inch) diameter bore launch tube. The tests were conducted in a medium vacuum flight range. Previous experience with the gun was used to establish the minimum requirements for optimum efficiency. Two operating parameters, propellant load and drive gas pressure, were varied in order to find an initial optimum operating condition at a conservative propellant load. Propellant load and driver gas pressure were then incrementally increased. This procedure was methodically applied until significant mechanical deformation of a critical gun component took place. This report presents the results of these tests. Projectile velocity was measured to better than 3 percent accuracy using a magnetic induction technique. A 0.485 gram polycarbonate projectile was launched to a velocity of 7.77 km/s during the tests. 13 refs.

  8. Duration of the cycle of the seminiferous epithelium and its stages in the rhesus monkey (Macaca mulatta)

    SciTech Connect (OSTI)

    de Rooij, D.G.; van Alphen, M.M.; van de Kant, H.J.

    1986-10-01T23:59:59.000Z

    Doses of 1 Gy or more of X-irradiation killed all B spermatogonia present in the testis, and during the first 3 weeks after irradiation, virtually no new B spermatogonia were formed. The number of Apale spermatogonia decreased during the first cycle of the seminiferous epithelium while the number of Adark spermatogonia only began to decrease during the second cycle after irradiation. In this study, the duration of the cycle of the seminiferous epithelium in the rhesus monkey was estimated to be 10.5 days (SE = 0.2 days). This was determined following the depletion of germinal cells in the seminiferous epithelium during the first 3 weeks after irradiation. The duration of each of the 12 stages of the cycle was also determined. Our observations of the progress of germinal cell depletion revealed that after a dose of X-irradiation sufficient to kill all B spermatogonia, all spermatocytes disappeared from the testis within about 17 days, and all spermatids within about 31 days.

  9. Theoretical study of defect formation during the initial stages of native-oxide growth on GaSb (001)

    SciTech Connect (OSTI)

    Bermudez, V. M., E-mail: victor.bermudez@nrl.navy.mil [Electronics Science and Technology Division, U.S. Naval Research Laboratory, Washington, DC 20375 (United States)

    2014-04-07T23:59:59.000Z

    The formation of defects during the initial stages of native-oxide growth on the GaSb (001)-?(4?×?3) surface has been studied computationally using spin-unrestricted density functional theory. It is found that insertion into a Ga-Sb adatom dimer to form a peroxo Ga-O-O-Sb bridge is the most energetically favorable process with insertion into Ga-Sb back-bonds being somewhat less so. A Ga-O-O-Ga bridge between dimers is also favorable, but Sb-O-O-Sb bridges show little if any stability. In the course of analyzing molecular adsorption, a particularly reactive site has been identified that leads to O{sub 2} dissociation with little or no barrier. This process is initiated in the vicinity of an Sb-Sb dimer in the terminating layer and leads to sub-surface Ga and Sb defect sites (i.e., coordinatively unsaturated atoms) and to strained Ga-Sb bonds that may be susceptible to further O{sub 2} attack. However, the defects formed in these reactions do not produce states in the gap.

  10. Early-stage star forming cloud cores in GLIMPSE Extended Green Objects (EGOs) as traced by organics pecies

    E-Print Network [OSTI]

    Ge, Jixing; Chen, Xi; Takahashi, S

    2014-01-01T23:59:59.000Z

    In order to investigate the physical and chemical properties of massive star forming cores in early stages, we analyse the excitation and abundance of four organic species, CH3OH, CH3OCH3, HCOOCH3 and CH3CH2CN, toward 29 Extended Green Object (EGO) cloud cores that were observed by our previous single dish spectral line survey. The EGO cloud cores are found to have similar methanol J_3-J_2 rotation temperatures of ~44 K, a typical linear size of ~0.036 pc, and a typical beam averaged methanol abundance of several 10^(-9) (the beam corrected value could reach several 10^(-7)). The abundances of the latter three species, normalized by that of methanol, are found to be correlated also across a large variety of clouds such as EGO cloud cores, hot corinos, massive hot cores and Galactic Center clouds. The chemical properties of the EGO cloud cores lie between that of hot cores and hot corinos. However, the abundances and abundance ratios of the four species can not be satisfactorily explained by recent chemical mo...

  11. Three-stage autoignition of gasoline in an HCCI engine: An experimental and chemical kinetic modeling investigation

    SciTech Connect (OSTI)

    Machrafi, Hatim; Cavadias, Simeon [UPMC Universite Paris 06, LGPPTS, Ecole Nationale Superieure de Chimie de Paris (France); UPMC Universite Paris 06, Institut Jean Le Rond D'Alembert (France)

    2008-12-15T23:59:59.000Z

    The alternative HCCI combustion mode presents a possible means for decreasing the pollution with respect to conventional gasoline or diesel engines, while maintaining the efficiency of a diesel engine or even increasing it. This paper investigates the possibility of using gasoline in an HCCI engine and analyzes the autoignition of gasoline in such an engine. The compression ratio that has been used is 13.5, keeping the inlet temperature at 70 C, varying the equivalence ratio from 0.3 to 0.54, and the EGR (represented by N{sub 2}) ratio from 0 to 37 vol%. For comparison, a PRF95 and a surrogate containing 11 vol% n-heptane, 59 vol% iso-octane, and 30 vol% toluene are used. A previously validated kinetic surrogate mechanism is used to analyze the experiments and to yield possible explanations to kinetic phenomena. From this work, it seems quite possible to use the high octane-rated gasoline for autoignition purposes, even under lean inlet conditions. Furthermore, it appeared that gasoline and its surrogate, unlike PRF95, show a three-stage autoignition. Since the PRF95 does not contain toluene, it is suggested by the kinetic mechanism that the benzyl radical, issued from toluene, causes this so-defined ''obstructed preignition'' and delaying thereby the final ignition for gasoline and its surrogate. The results of the kinetic mechanism supporting this explanation are shown in this paper. (author)

  12. Molecular analysis of radiation-induced albino (c)-locus mutations that cause death at preimplantation stages of development

    SciTech Connect (OSTI)

    Rinchik, E.M. (Oak Ridge National Lab., TN (United States)); Toenjes, R.R.; Paul, D. (Fraunhofer-Instituet fuer Toxikologie und Aerosolforschung, Hannover (Germany)); Potter, M.D. (Univ. of Tenn.-Oak Ridge Graduate School of Biomedical Sciences, Oak Ridge, TN (United States))

    1993-12-01T23:59:59.000Z

    Deletion mutations at the albino (c) locus have been useful for continuing the development of fine-structure physical and functional maps of the Fes-Hbb region of mouse chromosome 7. This report describes the molecular analysis of a number of radiation-induced c deletions that, when homozygous, cause death of the embryo during preimplantation stages. The distal extent of these deletions defines a locus, pid, (preimplantation development) genetically associated with this phenotype. The proximal breakpoints of eight of these deletions were mapped with respect to the Tyr (tyrosinase; albino) gene as well as to anonymous loci within the Fah-Tyr region that are defined by the Pmv-31 viral integration site and by chromosome-microdissection clones. Rearrangements corresponding to the proximal breakpoints of two of these deletions were detected by Southern blot analysis, and a size-altered restriction fragment carrying the breakpoint of one of them was cloned. A probe derived from this deletion fusion fragment defines a locus, D7Rn6, which maps within (or distal to) the pid region, and which discriminates among the distal extents of deletions eliciting the pid phenotype. Extension of physical maps from D7Rn6 should provide access both to the pid region and to loci mapping distal to pid that are defined by N-ethyl-N-nitrosourea-induced lethal mutations. 36 refs., 10 figs.

  13. CERTIFICATE OF FIELD VERIFICATION AND DIAGNOSTIC TESTING CF-4R-ENV-22 Quality Insulation Installation (QII) -Insulation Stage Checklist (Page 1 of 3)

    E-Print Network [OSTI]

    CERTIFICATE OF FIELD VERIFICATION AND DIAGNOSTIC TESTING CF-4R-ENV-22 Quality Insulation Installation (QII) - Insulation Stage Checklist (Page 1 of 3) Site Address: Enforcement Agency: Permit Number: ____________ 2008 Residential Compliance Forms May 2012 All structural framing areas shall be insulated in a manner

  14. Transformation of Yeast 1. Grow cells in liquid culture to mid-logarithmic stage (0.5-0.8 ODU/ml)

    E-Print Network [OSTI]

    Odorizzi, Greg

    Transformation of Yeast 1. Grow cells in liquid culture to mid-logarithmic stage (0.5-0.8 ODU/ml) *cells at stationary phase have a thicker cell wall and are more difficult to transform 2. Centrifuge 5 for 5 min, chill on ice for 5 min, and vortex prior to using) 10. Add DNA to be transformed: *if

  15. 156 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 15, NO. 1, JANUARY 2000 Single-Stage Single-Switch Isolated PFC Regulator

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    --In this paper, a simple control method is presented for a single-stage single-switch isolated power removes the harmonic contents of the input current, the static value is ad- justed according to the load, with the two converters sharing one single switch. The PFC converter relies on the discontinuous-mode (DCM

  16. Fiche de proposition de stage en traitement d'images Nom de l'entreprise : Commissariat l'Energie Atomique et aux nergies alternatives Laboratoire

    E-Print Network [OSTI]

    Dobigeon, Nicolas

    Fiche de proposition de stage en traitement d'images Nom de l'entreprise : Commissariat à l'Energie Atomique et aux énergies alternatives ­ Laboratoire Télédétection, Surveillance, Environnement Email aux images disponibles et aux changements recherchés (de type bâti). Les méthodes basées sur la

  17. Multi-rate track-following control with robust stability for a dual-stage multi-sensing servo system in HDDs

    E-Print Network [OSTI]

    Horowitz, Roberto

    . Conventional single-stage servo systems, which utilize a voice coil 1 #12;motor (VCM) as an actuator, known in the HDD industry as the PES, and other measurements, which may include outputs of vibration of the PES against all undesirable exogenous disturbance such as track runout, windage and measurement noise

  18. Interactive effects of elevated temperature and pCO2 on early-life-history stages of the giant kelp Macrocystis pyrifera

    E-Print Network [OSTI]

    Blanchette, Carol Anne

    Interactive effects of elevated temperature and pCO2 on early-life-history stages of the giant kelp and mortality of zoospores of the giant kelp Macrocystis pyrifera, a foundation species of temperate reef ecosystems. Newly settled kelp spores were cultured in the laboratory for seven days in a factorial design

  19. A one-dimensional Fickian model to predict the Ga depth profiles in three-stage Cu(In,Ga)Se{sub 2}

    SciTech Connect (OSTI)

    Rodriguez-Alvarez, H., E-mail: humberto.rodriguez@helmholtz-berlin.de [International Iberian Nanotechnology Laboratory, Avenida Mestre Jose Veiga s/n, 4715-330 Braga (Portugal); Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109 Berlin (Germany); Mainz, R. [Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109 Berlin (Germany); Sadewasser, S. [International Iberian Nanotechnology Laboratory, Avenida Mestre Jose Veiga s/n, 4715-330 Braga (Portugal)

    2014-05-28T23:59:59.000Z

    We present a one-dimensional Fickian model that predicts the formation of a double Ga gradient during the fabrication of Cu(In,Ga)Se{sub 2} thin films by three-stage thermal co-evaporation. The model is based on chemical reaction equations, structural data, and effective Ga diffusivities. In the model, the Cu(In,Ga)Se{sub 2} surface is depleted from Ga during the deposition of Cu-Se in the second deposition stage, leading to an accumulation of Ga near the back contact. During the third deposition stage, where In-Ga-Se is deposited at the surface, the atomic fluxes within the growing layer are inverted. This results in the formation of a double Ga gradient within the Cu(In,Ga)Se{sub 2} layer and reproduces experimentally observed Ga distributions. The final shape of the Ga depth profile strongly depends on the temperatures, times and deposition rates used. The model is used to evaluate possible paths to flatten the marked Ga depth profile that is obtained when depositing at low substrate temperatures. We conclude that inserting Ga during the second deposition stage is an effective way to achieve this.

  20. Partial fuel stratification to control HCCI heat release rates : fuel composition and other factors affecting pre-ignition reactions of two-stage ignition fuels.

    SciTech Connect (OSTI)

    Dec, John E.; Sjoberg, Carl-Magnus G.; Cannella, William (Chevron USA Inc.); Yang, Yi; Dronniou, Nicolas

    2010-11-01T23:59:59.000Z

    Homogeneous charge compression ignition (HCCI) combustion with fully premixed charge is severely limited at high-load operation due to the rapid pressure-rise rates (PRR) which can lead to engine knock and potential engine damage. Recent studies have shown that two-stage ignition fuels possess a significant potential to reduce the combustion heat release rate, thus enabling higher load without knock.