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Sample records for lbs features regenerative

  1. Gary No. 13 blast furnace achieves 400 lbs/THM coal injection in 9 months

    SciTech Connect (OSTI)

    Sherman, G.J.; Schuett, K.J.; White, D.G.; O`Donnell, E.M.

    1995-12-01

    Number 13 Blast Furnace at Gary began injecting Pulverized Coal in March 1993. The injection level was increased over the next nine months until a level off 409 lbs/THM was achieved for the month of December 1993. Several major areas were critical in achieving this high level of Pulverized coal injection (PCI) including furnace conditions, lance position, tuyere blockage, operating philosophy, and outages. The paper discusses the modifications made to achieve this level of injection. This injection level decreased charged dry coke rate from 750 lbs/THM to about 625 lbs/THM, while eliminating 150 lbs/THM of oil and 20 lbs/THM of natural gas. Assuming a 1.3 replacement ratio for an oil/natural gas mixture, overall coke replacement for the coal is about 0.87 lbs coke/lbs coal. Gary Works anticipates levels of 500 lbs/THM are conceivable.

  2. Fully relayed regenerative amplifier

    DOE Patents [OSTI]

    Glass, Alexander J. (Berkeley, CA)

    1981-01-01

    A regenerative laser apparatus and method using the optical relay concept to maintain high fill factors, to suppress diffraction effects, and to minimize phase distortions in a regenerative amplifier.

  3. DOE Weighs in at 120,000 lbs! | Department of Energy

    Office of Environmental Management (EM)

    DOE Weighs in at 120,000 lbs! DOE Weighs in at 120,000 lbs! October 1, 2010 - 3:46pm Addthis Secretary Chu and John Berry (foreground) at the Department of Energy Feds Feed Families Event. Secretary Chu and John Berry (foreground) at the Department of Energy Feds Feed Families Event. Under Secretary Thomas D’Agostino Under Secretary Thomas D'Agostino Under Secretary for Nuclear Security & Administrator, National Nuclear Security Administration This summer, John Berry, Director of the

  4. Features

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

    Features /science-innovation/_assets/images/icon-science.jpg Science & Innovation Features Our strong interdisciplinary teaming and unique research facilities allow us to develop solutions to complex problems, and to support partners and collaborators, all with the goal of strengthening national security and making a safer world. Faces of Science» 70 Years of Innovations» 50 Years of Space» Top Science News of 2014» Top Ten Innovations of 2013» Energy Sustainability» Radical

  5. Regenerative feedback resonant circuit

    DOE Patents [OSTI]

    Jones, A. Mark; Kelly, James F.; McCloy, John S.; McMakin, Douglas L.

    2014-09-02

    A regenerative feedback resonant circuit for measuring a transient response in a loop is disclosed. The circuit includes an amplifier for generating a signal in the loop. The circuit further includes a resonator having a resonant cavity and a material located within the cavity. The signal sent into the resonator produces a resonant frequency. A variation of the resonant frequency due to perturbations in electromagnetic properties of the material is measured.

  6. Regenerative air heater

    DOE Patents [OSTI]

    Hasselquist, P.B.; Baldner, R.

    1980-11-26

    A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

  7. Regenerative air heater

    DOE Patents [OSTI]

    Hasselquist, Paul B.; Baldner, Richard

    1982-01-01

    A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

  8. Regenerative combustion device

    DOE Patents [OSTI]

    West, Phillip B.

    2004-03-16

    A regenerative combustion device having a combustion zone, and chemicals contained within the combustion zone, such as water, having a first equilibrium state, and a second combustible state. Means for transforming the chemicals from the first equilibrium state to the second combustible state, such as electrodes, are disposed within the chemicals. An igniter, such as a spark plug or similar device, is disposed within the combustion zone for igniting combustion of the chemicals in the second combustible state. The combustion products are contained within the combustion zone, and the chemicals are selected such that the combustion products naturally chemically revert into the chemicals in the first equilibrium state following combustion. The combustion device may thus be repeatedly reused, requiring only a brief wait after each ignition to allow the regeneration of combustible gasses within the head space.

  9. Regenerative braking device

    DOE Patents [OSTI]

    Hoppie, Lyle O. (Birmingham, MI)

    1982-01-12

    Disclosed are several embodiments of a regenerative braking device for an automotive vehicle. The device includes a plurality of rubber rollers (24, 26) mounted for rotation between an input shaft (14) connectable to the vehicle drivetrain and an output shaft (16) which is drivingly connected to the input shaft by a variable ratio transmission (20). When the transmission ratio is such that the input shaft rotates faster than the output shaft, the rubber rollers are torsionally stressed to accumulate energy, thereby slowing the vehicle. When the transmission ratio is such that the output shaft rotates faster than the input shaft, the rubber rollers are torsionally relaxed to deliver accumulated energy, thereby accelerating or driving the vehicle.

  10. Regen SW | Open Energy Information

    Open Energy Info (EERE)

    SW Jump to: navigation, search Name: Regen SW Place: Exeter, United Kingdom Zip: EX4 4RN Product: Sustainable energy agency funded by South West RDA supporting green business in...

  11. Regenerative switching CMOS system

    DOE Patents [OSTI]

    Welch, J.D.

    1998-06-02

    Complementary Metal Oxide Semiconductor (CMOS) Schottky barrier Field Effect Transistor systems, which are a series combination of N and P-Channel MOSFETS, in which Source Schottky barrier junctions of the N and P-Channel Schottky barrier MOSFETS are electrically interconnected, (rather than the Drains as in conventional diffused junction CMOS), which Schottky barrier MOSFET system demonstrates Regenerative Inverting Switching Characteristics in use are disclosed. Both the N and P-Channel Schottky barrier MOSFET devices are unique in that they provide operational Drain Current vs. Drain to Source voltage as a function of Gate voltage only where the polarities of the Drain voltage and Gate voltage are opposite, referenced to the Source as a common terminal, and where the polarity of the voltage applied to the Gate is appropriate to cause Channel inversion. Experimentally derived results which demonstrate and verify the operation of N and P-Channel Schottky barrier MOSFETS actually fabricated on P and N-type Silicon respectively, by a common procedure using vacuum deposited Chromium as a Schottky barrier forming metal, are also provided. 14 figs.

  12. Regenerative switching CMOS system

    DOE Patents [OSTI]

    Welch, James D. (10328 Pinehurst Ave., Omaha, NE 68124)

    1998-01-01

    Complementary Metal Oxide Semiconductor (CMOS) Schottky barrier Field Effect Transistor systems, which are a seriesed combination of N and P-Channel MOSFETS, in which Source Schottky barrier junctions of the N and P-Channel Schottky barrier MOSFETS are electically interconnected, (rather than the Drains as in conventional diffused junction CMOS), which Schottky barrier MOSFET system demonstrates Regenerative Inverting Switching Characteristics in use are disclosed. Both the N and P-Channel Schottky barrier MOSFET devices are unique in that they provide operational Drain Current vs. Drain to Source voltage as a function of Gate voltage only where the polarities of the Drain voltage and Gate voltage are opposite, referenced to the Source as a common terminal, and where the polarity of the voltage applied to the Gate is appropriate to cause Channel inversion. Experimentally derived results which demonstrate and verify the operation of N and P-Channel Schottky barrier MOSFETS actually fabricated on P and N-type Silicon respectively, by a common procedure using vacuum deposited Chromium as a Schottky barrier forming metal, are also provided.

  13. Laser system using regenerative amplifier

    DOE Patents [OSTI]

    Emmett, J.L.

    1980-03-04

    High energy laser system is disclosed using a regenerative amplifier, which relaxes all constraints on laser components other than the intrinsic damage level of matter, so as to enable use of available laser system components. This can be accomplished by use of segmented components, spatial filters, at least one amplifier using solid state or gaseous media, and separated reflector members providing a long round trip time through the regenerative cavity, thereby allowing slower switching and adequate time to clear the spatial filters, etc. The laser system simplifies component requirements and reduces component cost while providing high energy output. 10 figs.

  14. Laser system using regenerative amplifier

    DOE Patents [OSTI]

    Emmett, John L. [Pleasanton, CA

    1980-03-04

    High energy laser system using a regenerative amplifier, which relaxes all constraints on laser components other than the intrinsic damage level of matter, so as to enable use of available laser system components. This can be accomplished by use of segmented components, spatial filters, at least one amplifier using solid state or gaseous media, and separated reflector members providing a long round trip time through the regenerative cavity, thereby allowing slower switching and adequate time to clear the spatial filters, etc. The laser system simplifies component requirements and reduces component cost while providing high energy output.

  15. Advanced regenerative absorption refrigeration cycles

    DOE Patents [OSTI]

    Dao, Kim

    1990-01-01

    Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle and a single-effect regenerative absorption cycle (1R cycle) (12) as a bottoming subcycle. The SEA cycle (11) includes a boiler (13), a condenser (21), an expansion device (28), an evaporator (31), and an absorber (40), all operatively connected together. The 1R cycle (12) includes a multistage boiler (48), a multi-stage resorber (51), a multisection regenerator (49) and also uses the condenser (21), expansion device (28) and evaporator (31) of the SEA topping subcycle (11), all operatively connected together. External heat is applied to the SEA boiler (13) for operation up to about 500 degrees F., with most of the high pressure vapor going to the condenser (21) and evaporator (31) being generated by the regenerator (49). The substantially adiabatic and isothermal functioning of the SER subcycle (12) provides a high COP. For higher input temperatures of up to 700 degrees F., another SEA cycle (111) is used as a topping subcycle, with the absorber (140) of the topping subcycle being heat coupled to the boiler (13) of an ADR cycle (10). The 1R cycle (12) itself is an improvement in that all resorber stages (50b-f) have a portion of their output pumped to boiling conduits (71a-f) through the regenerator (49), which conduits are connected to and at the same pressure as the highest pressure stage (48a) of the 1R multistage boiler (48).

  16. Variable ratio regenerative braking device

    DOE Patents [OSTI]

    Hoppie, Lyle O. (Birmingham, MI)

    1981-12-15

    Disclosed is a regenerative braking device (10) for an automotive vehicle. The device includes an energy storage assembly (12) having a plurality of rubber rollers (26, 28) mounted for rotation between an input shaft (36) and an output shaft (42), clutches (38, 46) and brakes (40, 48) associated with each shaft, and a continuously variable transmission (22) connectable to a vehicle drivetrain and to the input and output shafts by the respective clutches. The rubber rollers are torsionally stressed to accumulate energy from the vehicle when the input shaft is clutched to the transmission while the brake on the output shaft is applied, and are torsionally relaxed to deliver energy to the vehicle when the output shaft is clutched to the transmission while the brake on the input shaft is applied. The transmission ratio is varied to control the rate of energy accumulation and delivery for a given rotational speed of the vehicle drivetrain.

  17. Regenerative rotary displacer Stirling engine

    SciTech Connect (OSTI)

    Isshiki, Naotsugu; Watanabe, Hiroichi; Raggi, L.; Isshiki, Seita; Hirata, Koichi

    1996-12-31

    A few rotary displacer Stirling engines in which the displacer has one gas pocket space at one side and rotates in a main enclosed cylinder, which is heated from one side and cooled from opposite side without any regenerator, have been studied for some time by the authors. The authors tried to improve this engine by equipping it with a regenerator, because without a regenerator, pressure oscillation and efficiency are too small. Here, several types of regenerative rotary displacer piston Stirling engines are proposed. One is the contra-rotating tandem two disc type displacer engine using axial heat conduction through side walls or by heat pipes and another is a single disc type with circulating fluid regenerator or heat pipes. Stirling engines of this new rotary displacer type are thought to attain high speed. Here, experimental results of the original rotary displacer Stirling engine without a regenerator, and one contra-rotating tandem displacer engine with side wall regenerator by axial heat conduction are reported accompanied with a discussion of the results.

  18. High power regenerative laser amplifier

    DOE Patents [OSTI]

    Miller, John L. (Livermore, CA); Hackel, Lloyd A. (Livermore, CA); Dane, Clifford B. (Dublin, CA); Zapata, Luis E. (Livermore, CA)

    1994-01-01

    A regenerative amplifier design capable of operating at high energy per pulse, for instance, from 20-100 Joules, at moderate repetition rates, for instance from 5-20 Hertz is provided. The laser amplifier comprises a gain medium and source of pump energy coupled with the gain medium; a Pockels cell, which rotates an incident beam in response to application of a control signal; an optical relay system defining a first relay plane near the gain medium and a second relay plane near the rotator; and a plurality of reflectors configured to define an optical path through the gain medium, optical relay and Pockels cell, such that each transit of the optical path includes at least one pass through the gain medium and only one pass through the Pockels cell. An input coupler, and an output coupler are provided, implemented by a single polarizer. A control circuit coupled to the Pockels cell generates the control signal in timed relationship with the input pulse so that the input pulse is captured by the input coupler and proceeds through at least one transit of the optical path, and then the control signal is applied to cause rotation of the pulse to a polarization reflected by the polarizer, after which the captured pulse passes through the gain medium at least once more and is reflected out of the optical path by the polarizer before passing through the rotator again to provide an amplified pulse.

  19. High power regenerative laser amplifier

    DOE Patents [OSTI]

    Miller, J.L.; Hackel, L.A.; Dane, C.B.; Zapata, L.E.

    1994-02-08

    A regenerative amplifier design capable of operating at high energy per pulse, for instance, from 20-100 Joules, at moderate repetition rates, for instance from 5-20 Hertz is provided. The laser amplifier comprises a gain medium and source of pump energy coupled with the gain medium; a Pockels cell, which rotates an incident beam in response to application of a control signal; an optical relay system defining a first relay plane near the gain medium and a second relay plane near the rotator; and a plurality of reflectors configured to define an optical path through the gain medium, optical relay and Pockels cell, such that each transit of the optical path includes at least one pass through the gain medium and only one pass through the Pockels cell. An input coupler, and an output coupler are provided, implemented by a single polarizer. A control circuit coupled to the Pockels cell generates the control signal in timed relationship with the input pulse so that the input pulse is captured by the input coupler and proceeds through at least one transit of the optical path, and then the control signal is applied to cause rotation of the pulse to a polarization reflected by the polarizer, after which the captured pulse passes through the gain medium at least once more and is reflected out of the optical path by the polarizer before passing through the rotator again to provide an amplified pulse. 7 figures.

  20. Therapeutic potential of nanoceria in regenerative medicine

    SciTech Connect (OSTI)

    Das, Soumen; Chigurupati, Srinivasulu; Dowding, Janet; Munusamy, Prabhakaran; Baer, Donald R.; McGinnis, James F.; Mattson, Mark P.; Self, William; Seal, Sudipta

    2014-11-01

    Tissue engineering and regenerative medicine aim to achieve functional restoration of tissue or cells damaged through disease, aging or trauma. Advancement of tissue engineering requires innovation in the field of 3D scaffolding, and functionalization with bioactive molecules. Nanotechnology offers advanced materials with patterned nano-morphologies for cell growth and different molecular substrates which can support cell survival and functions. Cerium oxide nanoparticles (nanoceria) can control intracellular as well as extracellular reactive oxygen and nitrogen species. Recent findings suggest that nanoceria can enhance long-term cell survival, enable cell migration and proliferation, and promote stem cell differentiation. Moreover, the self-regenerative property of nanoceria permits a small dose to remain catalytically active for extended time. This review summarizes the possibilities and applications of nanoceria in the field of tissue engineering and regenerative medicine.

  1. Combined hydraulic and regenerative braking system

    DOE Patents [OSTI]

    Venkataperumal, Rama R. (Troy, MI); Mericle, Gerald E. (Mount Clemens, MI)

    1981-06-02

    A combined hydraulic and regenerative braking system and method for an electric vehicle, with the braking system being responsive to the applied hydraulic pressure in a brake line to control the braking of the vehicle to be completely hydraulic up to a first level of brake line pressure, to be partially hydraulic at a constant braking force and partially regenerative at a linearly increasing braking force from the first level of applied brake line pressure to a higher second level of brake line pressure, to be partially hydraulic at a linearly increasing braking force and partially regenerative at a linearly decreasing braking force from the second level of applied line pressure to a third and higher level of applied line pressure, and to be completely hydraulic at a linearly increasing braking force from the third level to all higher applied levels of line pressure.

  2. Low-temperature thermally regenerative electrochemical system

    DOE Patents [OSTI]

    Loutfy, R.O.; Brown, A.P.; Yao, N.P.

    1982-04-21

    A thermally regenerative electrochemical system is described including an electrochemical cell with two water-based electrolytes separated by an ion exchange membrane, at least one of the electrolytes containing a complexing agent and a salt of a multivalent metal whose respective order of potentials for a pair of its redox couples is reversible by a change in the amount of the ocmplexing agent in the electrolyte, the complexing agent being removable by distillation to cause the reversal.

  3. Low temperature thermally regenerative electrochemical system

    DOE Patents [OSTI]

    Loutfy, Raouf O. (Tucson, AZ); Brown, Alan P. (Bolingbrook, IL); Yao, Neng-Ping (Clarendon Hills, IL)

    1983-01-01

    A thermally regenerative electrochemical system including an electrochemical cell with two water-based electrolytes separated by an ion exchange membrane, at least one of the electrolytes containing a complexing agent and a salt of a multivalent metal whose respective order of potentials for a pair of its redox couples is reversible by a change in the amount of the complexing agent in the electrolyte, the complexing agent being removable by distillation to cause the reversal.

  4. Parametric study for an immobilized amine sorbent in a regenerative...

    Office of Scientific and Technical Information (OSTI)

    Title: Parametric study for an immobilized amine sorbent in a regenerative carbon dioxide capture process Authors: Hoffman, James S. ; Hammache, Sonia ; Gray, McMahan L. ; Fauth, ...

  5. New Regenerative Cycle for Vapor Compression Refrigeration

    Office of Scientific and Technical Information (OSTI)

    SCIENTIFIC REPORT Title Page Project Title: New Regenerative Cycle for Vapor Compression Refrigeration DOE Award Number: DE-FG36-04GO14327 Document Title: Final Scientific Report Period Covered by Report: September 30, 2004 to September 30, 2005 Name and Address of Recipient Organization: Magnetic Development, Inc., 68 Winterhill Road, Madison, CT 06443, phone: 203-214-7247, fax: 203-421-7948, e-mail: mjb1000@aol.com Contact Information: Mark J. Bergander, Ph.D., P.E., Principal Investigator,

  6. Multiple excitation regenerative amplifier inertial confinement system

    DOE Patents [OSTI]

    George, Victor E. [Livermore, CA; Haas, Roger A. [Pleasanton, CA; Krupke, William F. [Pleasanton, CA; Schlitt, Leland G. [Livermore, CA

    1980-05-27

    The invention relates to apparatus and methods for producing high intensity laser radiation generation which is achieved through an optical amplifier-storage ring design. One or two synchronized, counterpropagating laser pulses are injected into a regenerative amplifier cavity and amplified by gain media which are pumped repetitively by electrical or optical means. The gain media excitation pulses are tailored to efficiently amplify the laser pulses during each transit. After the laser pulses have been amplified to the desired intensity level, they are either switched out of the cavity by some switch means, as for example an electro-optical device, for any well known laser end uses, or a target means may be injected into the regenerative amplifier cavity in such a way as to intercept simultaneously the counterpropagating laser pulses. One such well known end uses to which this invention is intended is for production of high density and temperature plasmas suitable for generating neutrons, ions and x-rays and for studying matter heated by high intensity laser radiation.

  7. Multiple excitation regenerative amplifier inertial confinement system

    DOE Patents [OSTI]

    George, V.E.; Haas, R.A.; Krupke, W.F.; Schlitt, L.G.

    1980-05-27

    The invention relates to apparatus and methods for producing high intensity laser radiation generation which is achieved through an optical amplifier-storage ring design. One or two synchronized, counterpropagating laser pulses are injected into a regenerative amplifier cavity and amplified by gain media which are pumped repetitively by electrical or optical means. The gain media excitation pulses are tailored to efficiently amplify the laser pulses during each transit. After the laser pulses have been amplified to the desired intensity level, they are either switched out of the cavity by some switch means, as for example an electro-optical device, for any well known laser end uses, or a target means may be injected into the regenerative amplifier cavity in such a way as to intercept simultaneously the counterpropagating laser pulses. One such well known end uses to which this invention is intended is for production of high density and temperature plasmas suitable for generating neutrons, ions and x-rays and for studying matter heated by high intensity laser radiation. 11 figs.

  8. Assessment of Waste Treatment Plant Lab C3V (LB-S1) Stack Sampling Probe Location for Compliance with ANSI/HPS N13.1-1999

    SciTech Connect (OSTI)

    Glissmeyer, John A.; Geeting, John GH

    2013-02-01

    This report documents a series of tests used to assess the proposed air sampling location in the Hanford Tank Waste Treatment and Immobilization Plant (WTP) Lab C3V (LB-S1) exhaust stack with respect to the applicable criteria regarding the placement of an air sampling probe. Federal regulations require that an air sampling probe be located in the exhaust stack in accordance with the criteria of American National Standards Institute/Health Physics Society (ANSI/HPS) N13.1-1999, Sampling and Monitoring Releases of Airborne Radioactive Substances from the Stack and Ducts of Nuclear Facilities. These criteria address the capability of the sampling probe to extract a sample that represents the effluent stream.

  9. Adaptive controller for regenerative and friction braking system

    DOE Patents [OSTI]

    Davis, R.I.

    1990-10-16

    A regenerative and friction braking system for a vehicle having one or more road wheels driven by an electric traction motor includes a driver responsive device for producing a brake demand signal having a magnitude corresponding to the level of braking force selected by the driver and friction and regenerative brakes operatively connected with the road wheels of the vehicle. A system according to this invention further includes control means for operating the friction and regenerative braking subsystems so that maximum brake torques sustainable by the road wheels of the vehicle without skidding or slipping will not be exceeded. 8 figs.

  10. Adaptive controller for regenerative and friction braking system

    DOE Patents [OSTI]

    Davis, Roy I. (Ypsilanti, MI)

    1990-01-01

    A regenerative and friction braking system for a vehicle having one or more roadwheels driven by an electric traction motor includes a driver responsive device for producing a brake demand signal having a magnitude corresponding to the level of braking force selected by the driver and friction and regenerative brakes operatively connected with the roadwheels of the vehicle. A system according to this invention further includes control means for operating the friction and regenerative braking subsystems so that maximum brake torques sustainable by the roadwheels of the vehicle without skidding or slipping will not be exceeded.

  11. Maass Regenerative Energien GmbH | Open Energy Information

    Open Energy Info (EERE)

    GmbH Jump to: navigation, search Name: Maass Regenerative Energien GmbH Place: Wesel, Germany Zip: 46485 Product: Markets, plans, installs and maintains PV power plants in Europe,...

  12. High power, high beam quality regenerative amplifier

    DOE Patents [OSTI]

    Hackel, L.A.; Dane, C.B.

    1993-08-24

    A regenerative laser amplifier system generates high peak power and high energy per pulse output beams enabling generation of X-rays used in X-ray lithography for manufacturing integrated circuits. The laser amplifier includes a ring shaped optical path with a limited number of components including a polarizer, a passive 90 degree phase rotator, a plurality of mirrors, a relay telescope, and a gain medium, the components being placed close to the image plane of the relay telescope to reduce diffraction or phase perturbations in order to limit high peak intensity spiking. In the ring, the beam makes two passes through the gain medium for each transit of the optical path to increase the amplifier gain to loss ratio. A beam input into the ring makes two passes around the ring, is diverted into an SBS phase conjugator and proceeds out of the SBS phase conjugator back through the ring in an equal but opposite direction for two passes, further reducing phase perturbations. A master oscillator inputs the beam through an isolation cell (Faraday or Pockels) which transmits the beam into the ring without polarization rotation. The isolation cell rotates polarization only in beams proceeding out of the ring to direct the beams out of the amplifier. The diffraction limited quality of the input beam is preserved in the amplifier so that a high power output beam having nearly the same diffraction limited quality is produced.

  13. High power, high beam quality regenerative amplifier

    DOE Patents [OSTI]

    Hackel, Lloyd A. (Livermore, CA); Dane, Clifford B. (Livermore, CA)

    1993-01-01

    A regenerative laser amplifier system generates high peak power and high energy per pulse output beams enabling generation of X-rays used in X-ray lithography for manufacturing integrated circuits. The laser amplifier includes a ring shaped optical path with a limited number of components including a polarizer, a passive 90 degree phase rotator, a plurality of mirrors, a relay telescope, and a gain medium, the components being placed close to the image plane of the relay telescope to reduce diffraction or phase perturbations in order to limit high peak intensity spiking. In the ring, the beam makes two passes through the gain medium for each transit of the optical path to increase the amplifier gain to loss ratio. A beam input into the ring makes two passes around the ring, is diverted into an SBS phase conjugator and proceeds out of the SBS phase conjugator back through the ring in an equal but opposite direction for two passes, further reducing phase perturbations. A master oscillator inputs the beam through an isolation cell (Faraday or Pockels) which transmits the beam into the ring without polarization rotation. The isolation cell rotates polarization only in beams proceeding out of the ring to direct the beams out of the amplifier. The diffraction limited quality of the input beam is preserved in the amplifier so that a high power output beam having nearly the same diffraction limited quality is produced.

  14. Regenerative Fuel Cells for Energy Storage | Department of Energy

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

    Regenerative Fuel Cells for Energy Storage Regenerative Fuel Cells for Energy Storage Presentation by Corky Mittelsteadt, Giner Electrochemical Systems, at the NREL Reversible Fuel Cells Workshop, April 19, 2011 PDF icon rev_fc_wkshp_mittelsteadt.pdf More Documents & Publications Reversible Fuel Cells Workshop Summary Report Development of Reversible Fuel Cell Systems at Proton Energy Hydrogen Production by Polymer Electrolyte Membrane (PEM) Electrolysis-Spotlight on Giner and Proton

  15. Electric vehicle regenerative antiskid braking and traction control system

    DOE Patents [OSTI]

    Cikanek, S.R.

    1995-09-12

    An antiskid braking and traction control system for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes one or more sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensors and determining if regenerative antiskid braking control, requiring hydraulic braking control, or requiring traction control are required. The processor then employs a control strategy based on the determined vehicle state and provides command signals to a motor controller to control the operation of the electric traction motor and to a brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative antiskid braking control, hydraulic braking control, and traction control. 10 figs.

  16. Electric vehicle regenerative antiskid braking and traction control system

    DOE Patents [OSTI]

    Cikanek, Susan R. (Wixom, MI)

    1995-01-01

    An antiskid braking and traction control system for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes one or more sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensors and determining if regenerative antiskid braking control, requiring hydrualic braking control, or requiring traction control are required. The processor then employs a control strategy based on the determined vehicle state and provides command signals to a motor controller to control the operation of the electric traction motor and to a brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative antiskid braking control, hydraulic braking control, and traction control.

  17. Ignition feedback regenerative free electron laser (FEL) amplifier

    DOE Patents [OSTI]

    Kim, Kwang-Je (Burr Ridge, IL); Zholents, Alexander (Walnut Creek, CA); Zolotorev, Max (Oakland, CA)

    2001-01-01

    An ignition feedback regenerative amplifier consists of an injector, a linear accelerator with energy recovery, and a high-gain free electron laser amplifier. A fraction of the free electron laser output is coupled to the input to operate the free electron laser in the regenerative mode. A mode filter in this loop prevents run away instability. Another fraction of the output, after suitable frequency up conversion, is used to drive the photocathode. An external laser is provided to start up both the amplifier and the injector, thus igniting the system.

  18. Advanced regenerative thermal oxidation (RTO) technology for air toxics control - selected case histories

    SciTech Connect (OSTI)

    Seiwert, J.J. Jr.

    1997-12-31

    Advanced design regenerative thermal oxidation (RTO) systems have been developed and are in commercial scale use for control of process emissions containing air toxics (HAPs) and VOCs. High operating temperatures coupled with high thermal energy recovery efficiencies inherent with RTO technology provide for high destruction efficiencies while minimizing formation of objectionable combustion byproducts. These results are achieved with low system operating costs. This paper covers development of advanced design commercial RTO systems for control of air emissions from several important commercial processes: total reduced sulfur (TRS) and other HAPs/VOC emissions from pulp mill processes. Chlorinated organics and other HAPs/VOC emissions from pharmaceutical manufacturing operations. The data presented represent the first commercial scale application of RTO technology to abate emissions from these processes. Particular design features required for each specific process, in order to provide reliable, safe and effective systems, are reviewed. Emissions abatement performance, as well as operational data, are presented for the systems.

  19. Featured Announcements

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

    May 2014 Nobel Lecture Videos Now Available Online May 29, 2014 by Kathy Kincade Three of the NERSC Nobel Lecture Series videos -- featuring John Kuriyan, Warren Washington, George...

  20. Theoretical and experimental study on regenerative rotary displacer Stirling engine

    SciTech Connect (OSTI)

    Raggi, L.; Katsuta, Masafumi; Isshiki, Naotsugu; Isshiki, Seita

    1997-12-31

    Recently a quite new type of hot air engine called rotary displacer engine, in which the displacer is a rotating disk enclosed in a cylinder, has been conceived and developed. The working gas, contained in a notch excavated in the disk, is heated and cooled alternately, on account of the heat transferred through the enclosing cylinder that is heated at one side and cooled at the opposite one. The gas temperature oscillations cause the pressure fluctuations that get out mechanical power acting on a power piston. In order to attempt to increase the performances for this kind of engine, the authors propose three different regeneration methods. The first one comprises two coaxial disks that, revolving in opposite ways, cause a temperature gradient on the cylinder wall and a regenerative axial heat conduction through fins shaped on the cylinder inner wall. The other two methods are based on the heat transferred by a proper closed circuit that in one case has a circulating liquid inside and in the other one is formed by several heat pipes working each one for different temperatures. An engine based on the first principle, the Regenerative Tandem Contra-Rotary Displacer Stirling Engine, has been realized and experimented. In this paper experimental results with and without regeneration are reported comparatively with a detailed description of the unity. A basic explanation of the working principle of this engine and a theoretical analysis investigating the main influential parameters for the regenerative effect are done. This new rotating displacer Stirling engines, for their simplicity, are expected to attain high rotational speed especially for applications as demonstration and hobby unities.

  1. Propellant feed system of a regeneratively cooled scramjet

    SciTech Connect (OSTI)

    Kanda, Takeshi; Masuya, Goro; Wakamatsu, Yoshio )

    1991-04-01

    An expander cycle for an airframe-integrated hydrogen-fueled scramjet is analyzed to study regenerative cooling characteristics and overall specific impulse. Below Mach 10, the specific impulse and thrust coincide with the reference values. At Mach numbers above 10, a reduction of the specific impulse occurs due to the coolant flow rate requirement, which is accompanied by an increase of thrust. It is shown that the thrust may be increased by injecting excess fuel into the combustor to compensate for the decrease of the specific impulse. 9 refs.

  2. Improving the efficiency and availability analysis of a modified reheat regenerative Rankine cycle

    SciTech Connect (OSTI)

    Bassily, A.M.

    1999-07-01

    Reheating in a reheat regenerative steam power cycle increases efficiency by increasing the average temperature of heat reception, but also increases the irreversibility of feed water heaters by raising the temperature of the superheated steam used for the regenerative process. This paper introduces some modifications to the regular reheat regenerative steam power cycle that reduce the irreversibility of the regenerative process. An availability analysis of the modified cycle and the regular reheat regenerative cycle as well as a comparison study between both cycles is done. The results indicate that a gain in energy efficiency of up to 2.5% as the steam generator pressure varies is obtained when applying such modifications at the same conditions of pressure, temperature's number of reheating stages, and feed water heaters. The availability analysis showed that such increase in efficiency is due to the reduction of the irreversibility of the regeneration process of the modified cycle.

  3. Featured Announcements

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

    Edison is Back and Faster Allocation Year Rollover Help Staff Blogs Request Repository Mailing List Operations for: Passwords & Off-Hours Status 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For Users » User Announcements » Featured Announcements Featured Announcements Edison's move is complete

  4. ARM - Features

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

    CenterFeatures Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes Blog Events Employment

  5. Regenerative braking device with rotationally mounted energy storage means

    DOE Patents [OSTI]

    Hoppie, Lyle O. (Birmingham, MI)

    1982-03-16

    A regenerative braking device for an automotive vehicle includes an energy storage assembly (12) having a plurality of rubber rollers (26, 28) mounted for rotation between an input shaft (30) and an output shaft (32), clutches (50, 56) and brakes (52, 58) associated with each shaft, and a continuously variable transmission (22) connectable to a vehicle drivetrain and to the input and output shafts by the respective clutches. In a second embodiment the clutches and brakes are dispensed with and the variable ratio transmission is connected directly across the input and output shafts. In both embodiments the rubber rollers are torsionally stressed to accumulate energy from the vehicle when the input shaft rotates faster or relative to the output shaft and are torsionally relaxed to deliver energy to the vehicle when the output shaft rotates faster or relative to the input shaft.

  6. Featured Announcements

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

    June 2014 NERSC User Announcements RSS Feed June 30, 2014 by Richard Gerber NERSC's User Announcements (not these "Featured Announcements") are now available as an RSS feed. Point your RSS reader to http://www.nersc.gov/users/announcements/rss Read the full post Call for Proposals: NERSC Exascale Science Application Program June 5, 2014 by Francesca Verdier NERSC is now accepting applications for the NERSC Exascale Science Application Program (NESAP). Through NESAP, NERSC will partner

  7. Featured Announcements

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

    January 2014 NERSC's 40th Anniversary Kicks Off with a Special User Group Meeting January 15, 2014 by Francesca Verdier Registration is now open for NUG 2014, the annual meeting of the NERSC Users' Group, Feb. 3-6, 2014. This year's NUG meeting is special, it kicks off NERSC's 40th anniversary celebration. The highlight of NUG 2014 is a two-day "Celebration of Science and Technology" featuring talks by Berkeley Lab's Horst Simon and Kathy Yelick, NERSC Director Sudip Dosanjh, prominent

  8. Fuzzy logic electric vehicle regenerative antiskid braking and traction control system

    DOE Patents [OSTI]

    Cikanek, Susan R. (Wixom, MI)

    1994-01-01

    An regenerative antiskid braking and traction control system using fuzzy logic for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensor and determining if regenerative antiskid braking control, requiring hydraulic braking control, and requiring traction control are required. The processor then employs fuzzy logic based on the determined vehicle state and provides command signals to a motor controller to control operation of the electric traction motor and to the brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative braking control, hydraulic braking control, and traction control.

  9. Fuzzy logic electric vehicle regenerative antiskid braking and traction control system

    DOE Patents [OSTI]

    Cikanek, S.R.

    1994-10-25

    An regenerative antiskid braking and traction control system using fuzzy logic for an electric or hybrid vehicle having a regenerative braking system operatively connected to an electric traction motor, and a separate hydraulic braking system includes sensors for monitoring present vehicle parameters and a processor, responsive to the sensors, for calculating vehicle parameters defining the vehicle behavior not directly measurable by the sensor and determining if regenerative antiskid braking control, requiring hydraulic braking control, and requiring traction control are required. The processor then employs fuzzy logic based on the determined vehicle state and provides command signals to a motor controller to control operation of the electric traction motor and to the brake controller to control fluid pressure applied at each vehicle wheel to provide the appropriate regenerative braking control, hydraulic braking control, and traction control. 123 figs.

  10. Parametric study for an immobilized amine sorbent in a regenerative carbon

    Office of Scientific and Technical Information (OSTI)

    dioxide capture process (Journal Article) | SciTech Connect Journal Article: Parametric study for an immobilized amine sorbent in a regenerative carbon dioxide capture process Citation Details In-Document Search Title: Parametric study for an immobilized amine sorbent in a regenerative carbon dioxide capture process Authors: Hoffman, James S. ; Hammache, Sonia ; Gray, McMahan L. ; Fauth, Daniel J. ; Pennline, Henry W. Publication Date: 2014-10-01 OSTI Identifier: 1168807 Report Number(s):

  11. USDA Awards Nearly $2 Million for First Phase of Regenerative Community

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

    Planned for Pine Ridge Reservation | Department of Energy USDA Awards Nearly $2 Million for First Phase of Regenerative Community Planned for Pine Ridge Reservation USDA Awards Nearly $2 Million for First Phase of Regenerative Community Planned for Pine Ridge Reservation July 2, 2015 - 9:15am Addthis A row of homes on the Pine Ridge Reservation in South Dakota. A row of homes on the Pine Ridge Reservation in South Dakota. Karen Petersen Karen Petersen Project Manager with the National

  12. Radio frequency regenerative oscillations in monolithic high-Q/V heterostructured photonic crystal cavities

    SciTech Connect (OSTI)

    Yang, Jinghui E-mail: tg2342@columbia.edu; Gu, Tingyi E-mail: tg2342@columbia.edu; Zheng, Jiangjun; Wei Wong, Chee; Yu, Mingbin; Lo, Guo-Qiang; Kwong, Dim-Lee

    2014-02-10

    We report temporal and spectral domain observation of regenerative oscillation in monolithic silicon heterostructured photonic crystals cavities with high quality factor to mode volume ratios (Q/V). The results are interpreted by nonlinear coupled mode theory (CMT) tracking the dynamics of photon, free carrier population, and temperature variations. We experimentally demonstrate effective tuning of the radio frequency tones by laser-cavity detuning and laser power levels, confirmed by the CMT simulations with sensitive input parameters.

  13. Hopper Featured Announcements

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

    April 2012 Cluster Compatibility Mode is now available on Hopper April 10, 2012 We are pleased to announce a new feature on Hopper, Cray Cluster Compatibility Mode (CCM) which...

  14. Hopper Featured Announcements

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

    Announcements Hopper Featured Announcements Hopper OS upgrade and new SW set to default next Wed, Feb 27 February 21, 2013 by Helen He | 0 Comments 1) There will be a scheduled...

  15. Feature Characterization Library

    Energy Science and Technology Software Center (OSTI)

    2006-08-03

    FCLib is a data analysis toolkit constructed to meet the needs of data discovery in large-scale, spatio-temporal data such as finite element simulation data. FCLib is a C library toolkit of building blocks that can be assembled into complex analyses. Important features of FCLib include the following: (1) Support of feature-based analysis, (2) minimization of low-oevel processing, (3) ease of use, and (4) applicable to the wide variety of science domains.

  16. 2004 Feature Stories | NREL

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

    4 Feature Stories The following feature stories take an in-depth, behind-the-scenes look at how NREL is advancing energy efficiency and renewable energy technologies. December 2004 NREL - Keeping Up with the Rapidly Growing Wind Industry NREL - Keeping Up with the Rapidly Growing Wind Industry Wind energy-it's the fastest growing electricity-generating technology in the world. And thanks to the successful research and development partnerships between industry and DOE's Wind Program at NREL and

  17. 2007 Feature Stories | NREL

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

    7 Feature Stories The following feature stories take an in-depth, behind-the-scenes look at how NREL is advancing energy efficiency and renewable energy technologies. December 2007 Major Construction Begins on NREL's Main Campus Major Construction Begins on NREL's Main Campus NREL is in the process of designing and building key facilities to meet the nation's crucial research objectives for clean and sustainable energy technologies. A $101 million increase to NREL's budget makes it possible for

  18. 2014 Feature Stories | NREL

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

    2014 Feature Stories The following feature stories take an in-depth, behind-the-scenes look at how NREL is advancing energy efficiency and renewable energy technologies. November 2014 New Initiatives Debut at Industry Growth Forum New Initiatives Debut at Industry Growth Forum At annual event, inverter technology takes top honor-and two new programs are announced to push clean energy innovations to the marketplace. October 2014 Reviving Algae from the (Almost) Dead Reviving Algae from the

  19. 2016 Feature Stories | NREL

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

    2016 Feature Stories The following feature stories take an in-depth, behind-the-scenes look at how NREL is advancing energy efficiency and renewable energy technologies. March 2016 Colorado School Earns Return Trip to National Science Bowl Colorado School Earns Return Trip to National Science Bowl Ridgeview Classical Charter School scores convincing victory at Colorado Science Bowl to secure trip to national competition. February 2016 Claims for Solar Cell Efficiency Put to Test at NREL Claims

  20. Community Feature Stories

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

    Community Feature Stories /community/_assets/images/icon-community.jpg Community Feature Stories Our good neighbor pledge: to contribute to quality of life in Northern New Mexico through economic development, excellence in education, and active employee engagement in our communities. Northern New Mexico Micro Grape Growers Association Grape Growers Association enlivens agriculture Growers association unites small parcels of land, enlivens production, protects water rights for Northern New Mexico

  1. Regeneratively cooled coal combustor/gasifier with integral dry ash removal

    DOE Patents [OSTI]

    Beaufrere, A.H.

    1982-04-30

    A coal combustor/gasifier is disclosed which produces a low or medium combustion gas fired furnances or boilers. Two concentric shells define a combustion air flows to provide regenerative cooling of the inner shell for dry ash operation. A fuel flow and a combustion air flow having opposed swirls are mixed and burned in a mixing-combustion portion of the combustion volume and the ash laden combustion products flow with a residual swirl into an ash separation region. The ash is cooled below the fusion temperature and is moved to the wall by centrifugal force where it is entrained in the cool wall boundary layer. The boundary layer is stabilized against ash re-entrainment as it is moved to an ash removal annulus by a flow of air from the plenum through slots in the inner shell, and by suction on an ash removal skimmer slot.

  2. Regenerative Fuel Cells: Renewable Energy Storage Devices Based on Neutral Water Input

    SciTech Connect (OSTI)

    2010-09-01

    GRIDS Project: Proton Energy Systems is developing an energy storage device that converts water to hydrogen fuel when excess electricity is available, and then uses hydrogen to generate electricity when energy is needed. The system includes an electrolyzer, which generates and separates hydrogen and oxygen for storage, and a fuel cell which converts the hydrogen and oxygen back to electricity. Traditional systems use acidic membranes, and require expensive materials including platinum and titanium for key parts of the system. In contrast, Proton Energy Systems new system will use an inexpensive alkaline membrane and will contain only inexpensive metals such as nickel and stainless steel. If successful, Proton Energy Systems system will have similar performance to todays regenerative fuel cell systems at a fraction of the cost, and can be used to store electricity on the electric grid.

  3. 2003 Feature Stories | NREL

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

    3 Feature Stories The following feature stories take an in-depth, behind-the-scenes look at how NREL is advancing energy efficiency and renewable energy technologies. September 2003 NREL Scientists Take On Hydrogen Storage NREL Scientists Take On Hydrogen Storage As I buckle my baby daughter into our car, I marvel at the possibility that her first car could be powered by hydrogen-the third most abundant element on the Earth's surface. That is, if researchers-including those at NREL-can find a

  4. Intrinsic Feature Motion Tracking

    Energy Science and Technology Software Center (OSTI)

    2013-03-19

    Subject motion during 3D medical scanning can cause blurring and artifacts in the 3D images resulting in either rescans or poor diagnosis. Anesthesia or physical restraints may be used to eliminate motion but are undesirable and can affect results. This software measures the six degree of freedom 3D motion of the subject during the scan under a rigidity assumption using only the intrinsic features present on the subject area being monitored. This movement over timemore » can then be used to correct the scan data removing the blur and artifacts. The software acquires images from external cameras or images stored on disk for processing. The images are from two or three calibrated cameras in a stereo arrangement. Algorithms extract and track the features over time and calculate position and orientation changes relative to an initial position. Output is the 3D position and orientation change measured at each image.« less

  5. The Sandia Hand Features

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

    Sandia Hand Features  Low Cost: using 3D high-resolution rapid prototyping technologies for low volumes, ensuring each component is amenable to injection molding for high volumes, and designing around components found in large consumer markets has enabled significant cost reductions  Dexterous: designed with four 3 Degree of Freedom (DOF) fingers to enable dexterous tasks such as finger gating while still maintaining form closure  Modular: a hand frame with identical finger modules that

  6. Hopper Featured Announcements

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

    April 2012 Cluster Compatibility Mode is now available on Hopper April 10, 2012 We are pleased to announce a new feature on Hopper, Cray Cluster Compatibility Mode (CCM) which allows applications that previously could only run on Carver to run on Hopper. Cluster Compatibility Mode (CCM) is a Cray software solution that provides services needed to run most cluster-based independent software vendor (ISV) applications on the Cray XE6. It supports the standard Linux services, such as ssh, rsh, nscd,

  7. Environment Feature Stories

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

    Stories /environment/_assets/images/icon_earthday.jpg Environment Feature Stories Our environmental stewardship commitment: we will clean up the past, minimize impacts for current environmental operations, and create a sustainable future. image description Los Alamos National Laboratory recognizes employee teams with 2015 Pollution Prevention Awards Nearly 400 Lab employees on 32 teams received Pollution Prevention awards during an Earth Day awards ceremony - 4/23/15 Haze of smoke emanating from

  8. Featured Topic Pages

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

    Featured Topic Pages * Renowned scientists, with information about the scientists' R&D results * Significant DOE research disciplines, with R&D results * Manhattan Project, including scientists and key events Laureates * Nobel Prize winners associated with DOE and predecessor agencies * Winners of the Enrico Fermi Award, a U.S. Presidential award Database * Selected documents about noteworthy R&D results * Documents and individual pages searchable by word or phrase * Tag cloud

  9. Hopper Featured Announcements

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

    Announcements Hopper Featured Announcements Hopper OS upgrade and new SW set to default next Wed, Feb 27 February 21, 2013 by Helen He 1) There will be a scheduled hardware and software maintenance for Hopper next Wednesday, February 27, from 7 am to 7 pm Pacific time. This is a major OS upgrade. Most applications are highly recommended to recompile (or at least relink) after the maintenance. C++ and PGAS applications are recommended to recompile and relink. Please plan your work accordingly and

  10. Optimization and Demonstration of a Solid Oxide Regenerative Fuel Cell System

    SciTech Connect (OSTI)

    James F. McElroy; Darren B. Hickey; Fred Mitlitsky

    2006-09-30

    Single cell solid oxide regenerative fuel cells (SORFCs) have been demonstrated for over 1000 hours of operation at degradation rates as low as 0.5% per thousand hours for current densities as high as 300mA/cm{sup 2}. Efficiency levels (fuel cell power out vs. electrolysis power in) have been demonstrated in excess of 80% at 100mA/cm{sup 2}. All testing has been performed with metallic based interconnects and non-noble metal electrodes in order to limit fabrication costs for commercial considerations. The SORFC cell technology will be scaled up to a 1kW sized stack which will be demonstrated in Year 2 of the program. A self contained SORFC system requires efficient thermal management in order to maintain operating temperatures during exothermic and endothermic operational modes. The use of LiF as a phase change material (PCM) was selected as the optimum thermal storage medium by virtue of its superior thermal energy density by volume. Thermal storage experiments were performed using LiF and a simulated SORFC stack. The thermal storage concept was deemed to be technically viable for larger well insulated systems, although it would not enable a high efficiency thermally self-sufficient SORFC system at the 1 kW level.

  11. Extracellular matrix and growth factor engineering for controlled angiogenesis in regenerative medicine

    SciTech Connect (OSTI)

    Martino, Mikael M.; Brkic, Sime; Bovo, Emmanuela; Burger, Maximilian; Schaefer, Dirk J.; Wolff, Thomas; Gurke, Lorenz; Briquez, Priscilla S.; Larsson, Hans M.; Gianni-Barrera, Roberto; Hubbell, Jeffrey A.; Banfi, Andrea

    2015-04-01

    In this study, blood vessel growth plays a key role in regenerative medicine, both to restore blood supply to ischemic tissues and to ensure rapid vascularization of clinical-size tissue-engineered grafts. For example, vascular endothelial growth factor (VEGF) is the master regulator of physiological blood vessel growth and is one of the main molecular targets of therapeutic angiogenesis approaches. However, angiogenesis is a complex process and there is a need to develop rational therapeutic strategies based on a firm understanding of basic vascular biology principles, as evidenced by the disappointing results of initial clinical trials of angiogenic factor delivery. In particular, the spatial localization of angiogenic signals in the extracellular matrix (ECM) is crucial to ensure the proper assembly and maturation of new vascular structures. Here, we discuss the therapeutic implications of matrix interactions of angiogenic factors, with a special emphasis on VEGF, as well as provide an overview of current approaches, based on protein and biomaterial engineering that mimic the regulatory functions of ECM to optimize the signaling microenvironment of vascular growth factors.

  12. Extracellular matrix and growth factor engineering for controlled angiogenesis in regenerative medicine.

    SciTech Connect (OSTI)

    Martino, Mikael M.; Brkic, Sime; Bovo, Emmanuela; Burger, Maximilian; Schaefer, Dirk J.; Wolff, Thomas; Gurke, Lorenz; Briquez, Priscilla S.; Larsson, Hans M.; Gianni-Barrera, Roberto; Hubbell, Jeffrey A.; Banfi, Andrea

    2015-04-01

    Blood vessel growth plays a key role in regenerative medicine, both to restore blood supply to ischemic tissues and to ensure rapid vascularization of clinical-size tissue-engineered grafts. For example, vascular endothelial growth factor (VEGF) is the master regulator of physiological blood vessel growth and is one of the main molecular targets of therapeutic angiogenesis approaches. However, angiogenesis is a complex process and there is a need to develop rational therapeutic strategies based on a firm understanding of basic vascular biology principles, as evidenced by the disappointing results of initial clinical trials of angiogenic factor delivery. In particular, the spatial localization of angiogenic signals in the extracellular matrix (ECM) is crucial to ensure the proper assembly and maturation of new vascular structures. Here, we discuss the therapeutic implications of matrix interactions of angiogenic factors, with a special emphasis on VEGF, as well as provide an overview of current approaches, based on protein and biomaterial engineering that mimic the regulatory functions of ECM to optimize the signaling microenvironment of vascular growth factors.

  13. Regeneratively cooled coal combustor/gasifier with integral dry ash removal

    DOE Patents [OSTI]

    Beaufrere, Albert H. (Huntington, NY)

    1983-10-04

    A coal combustor/gasifier is disclosed which produces a low or medium combustion gas for further combustion in modified oil or gas fired furnaces or boilers. Two concentric shells define a combustion volume within the inner shell and a plenum between them through which combustion air flows to provide regenerative cooling of the inner shell for dry ash operation. A fuel flow and a combustion air flow having opposed swirls are mixed and burned in a mixing-combustion portion of the combustion volume and the ash laden combustion products flow with a residual swirl into an ash separation region. The ash is cooled below the fusion temperature and is moved to the wall by centrifugal force where it is entrained in the cool wall boundary layer. The boundary layer is stabilized against ash re-entrainment as it is moved to an ash removal annulus by a flow of air from the plenum through slots in the inner shell, and by suction on an ash removal skimmer slot.

  14. Extracellular matrix and growth factor engineering for controlled angiogenesis in regenerative medicine

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

    Martino, Mikael M.; Brkic, Sime; Bovo, Emmanuela; Burger, Maximilian; Schaefer, Dirk J.; Wolff, Thomas; Gurke, Lorenz; Briquez, Priscilla S.; Larsson, Hans M.; Gianni-Barrera, Roberto; et al

    2015-04-01

    In this study, blood vessel growth plays a key role in regenerative medicine, both to restore blood supply to ischemic tissues and to ensure rapid vascularization of clinical-size tissue-engineered grafts. For example, vascular endothelial growth factor (VEGF) is the master regulator of physiological blood vessel growth and is one of the main molecular targets of therapeutic angiogenesis approaches. However, angiogenesis is a complex process and there is a need to develop rational therapeutic strategies based on a firm understanding of basic vascular biology principles, as evidenced by the disappointing results of initial clinical trials of angiogenic factor delivery. In particular,more » the spatial localization of angiogenic signals in the extracellular matrix (ECM) is crucial to ensure the proper assembly and maturation of new vascular structures. Here, we discuss the therapeutic implications of matrix interactions of angiogenic factors, with a special emphasis on VEGF, as well as provide an overview of current approaches, based on protein and biomaterial engineering that mimic the regulatory functions of ECM to optimize the signaling microenvironment of vascular growth factors.« less

  15. qFeature

    SciTech Connect (OSTI)

    2015-09-14

    This package contains statistical routines for extracting features from multivariate time-series data which can then be used for subsequent multivariate statistical analysis to identify patterns and anomalous behavior. It calculates local linear or quadratic regression model fits to moving windows for each series and then summarizes the model coefficients across user-defined time intervals for each series. These methods are domain agnostic?but they have been successfully applied to a variety of domains, including commercial aviation and electric power grid data.

  16. qFeature

    Energy Science and Technology Software Center (OSTI)

    2015-09-14

    This package contains statistical routines for extracting features from multivariate time-series data which can then be used for subsequent multivariate statistical analysis to identify patterns and anomalous behavior. It calculates local linear or quadratic regression model fits to moving windows for each series and then summarizes the model coefficients across user-defined time intervals for each series. These methods are domain agnostic—but they have been successfully applied to a variety of domains, including commercial aviation andmore » electric power grid data.« less

  17. Recursive Feature Extraction in Graphs

    Energy Science and Technology Software Center (OSTI)

    2014-08-14

    ReFeX extracts recursive topological features from graph data. The input is a graph as a csv file and the output is a csv file containing feature values for each node in the graph. The features are based on topological counts in the neighborhoods of each nodes, as well as recursive summaries of neighbors' features.

  18. Investigation on the two-stage active magnetic regenerative refrigerator for liquefaction of hydrogen

    SciTech Connect (OSTI)

    Park, Inmyong; Park, Jiho; Jeong, Sangkwon; Kim, Youngkwon

    2014-01-29

    An active magnetic regenerative refrigerator (AMRR) is expected to be useful for hydrogen liquefaction due to its inherent high thermodynamic efficiency. Because the temperature of the cold end of the refrigerator has to be approximately liquid temperature, a large temperature span of the active magnetic regenerator (AMR) is indispensable when the heat sink temperature is liquid nitrogen temperature or higher. Since magnetic refrigerants are only effective in the vicinity of their own transition temperatures, which limit the temperature span of the AMR, an innovative structure is needed to increase the temperature span. The AMR must be a layered structure and the thermophysical matching of magnetic field and flow convection effects is very important. In order to design an AMR for liquefaction of hydrogen, the implementation of multi-layered AMR with different magnetic refrigerants is explored with multi-staging. In this paper, the performance of the multi-layered AMR using four rare-earth compounds (GdNi{sub 2}, Gd{sub 0.1}Dy{sub 0.9}Ni{sub 2}, Dy{sub 0.85}Er{sub 0.15}Al{sub 2}, Dy{sub 0.5}Er{sub 0.5}Al{sub 2}) is investigated. The experimental apparatus includes two-stage active magnetic regenerator containing two different magnetic refrigerants each. A liquid nitrogen reservoir connected to the warm end of the AMR maintains the temperature of the warm end around 77 K. High-pressure helium gas is employed as a heat transfer fluid in the AMR and the maximum magnetic field of 4 T is supplied by the low temperature superconducting (LTS) magnet. The temperature span with the variation of parameters such as phase difference between magnetic field and mass flow rate of magnetic refrigerants in AMR is investigated. The maximum temperature span in the experiment is recorded as 50 K and several performance issues have been discussed in this paper.

  19. Adipose-derived stem cells retain their regenerative potential after methotrexate treatment

    SciTech Connect (OSTI)

    Beane, Olivia S.; Fonseca, Vera C.; Darling, Eric M.

    2014-10-01

    In musculoskeletal tissues like bone, chemotherapy can impair progenitor cell differentiation and proliferation, resulting in decreased bone growth and mineralization throughout a patient's lifetime. In the current study, we investigated the effects of chemotherapeutics on adipose-derived stem cell (ASC) function to determine whether this cell source could be a candidate for repairing, or even preventing, chemotherapy-induced tissue damage. Dose-dependent proliferation rates of ASCs and normal human fibroblasts (NHFs) were quantified after treatment with cytarabine (CY), etoposide (ETO), methotrexate (MTX), and vincristine (VIN) using a fluorescence-based assay. The influence of MTX on the multipotency of ASCs and freshly isolated stromal vascular fraction (SVF) cells was also evaluated using lineage-specific stains and spectrophotometry. ASC and NHF proliferation were equally inhibited by exposure to CY and ETO; however, when treated with MTX and VIN, ASCs exhibited greater resistance. This was especially apparent for MTX-treated samples, with ASC proliferation showing no inhibition for clinically relevant MTX doses ranging from 0.1 to 50 μM. Additional experiments revealed that the differentiation potential of ASCs was not affected by MTX treatment and that upregulation of dihydrofolate reductase possibly contributed to this response. Moreover, SVF cells, which include ASCs, exhibited similar resistance to MTX impairment, with respect to cellular proliferation, clonogenicity, and differentiation capability. Therefore, we have shown that the regenerative properties of ASCs resist the cytotoxicity of MTX, identifying these cells as a potential key for repairing musculoskeletal damage in patients undergoing chemotherapy. - Highlights: • Long-term effects of chemotherapeutics can include musculoskeletal dysfunction. • A screen of common drugs showed disparate effects on ASCs and fibroblasts. • One drug, methotrexate, did not impair ASC growth characteristics or multipotency. • Upregulation of dihydrofolate reductase may enable ASC methotrexate resistance. • ASCs thus pose a possible means to ameliorate long-term tissue damage.

  20. Newsletter Features | Department of Energy

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

    About Us » News & Blog » Newsletter Features Newsletter Features Below are featured articles from the Indian Energy Beat newsletter. Download full issues of the newsletter. October 22, 2015 Leading the Charge: Doug MacCourt Advises Tribes on Energy Policy Leading the Charge is a regular feature spotlighting the movers and shakers in energy development on tribal lands. October 22, 2015 Winning the Future: Navajo-Hopi Land Commission Leverages DOE Grant to Advance Solar Ranch Project Under

  1. An analytical approach to multi-cylinder regenerative machines with application to 3-cylinder heat-aided Stirling heat pump

    SciTech Connect (OSTI)

    Yagyu, Sumio; Fujishima, Ichiro; Corey, J.; Isshiki, Naotsugu

    1996-12-31

    This paper describes a method for analysis and optimization of multi-cylinder regenerative machines. The authors have devised this method in a project at KUBOTA to develop an improved gas engine-driven heat pump using both shaft power and exhaust heat sources. Based on combinations of included Stirling cycles, this analytical approach allows use of well-established and validated Stirling simulation models to optimize partial systems. The technique further provides a method of integrating such optimal partial-system Stirling cycles into a complex combination system. It is shown that this remains an optimum solution for the three-cylinder heat-assisted heat pump case. Results from hardware tests of the main Stirling heat pump cycle (2-cylinders) are given and compared with analytical expectations using Sage simulation code. This is extended to validate Sage modeling of 3-cylinder machines.

  2. Third-Party Evaluation of Petro Tex Hydrocarbons, LLC, ReGen Lubricating Oil Re-refining Process

    SciTech Connect (OSTI)

    Compere, A L; Griffith, William {Bill} L

    2009-04-01

    This report presents an assessment of market, energy impact, and utility of the PetroTex Hydrocarbons, LLC., ReGen process for re-refining used lubricating oil to produce Group I, II, and III base oils, diesel fuel, and asphalt. PetroTex Hydrocarbons, LLC., has performed extensive pilot scale evaluations, computer simulations, and market studies of this process and is presently evaluating construction of a 23 million gallon per year industrial-scale plant. PetroTex has obtained a 30 acre site in the Texas Industries RailPark in Midlothian Texas. The environmental and civil engineering assessments of the site are completed, and the company has been granted a special use permit from the City of Midlothian and air emissions permits for the Texas Commission on Environmental Quality.

  3. ARM - Features and Releases Archive

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

    CenterFeaturesFeatures and Releases Archive Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field

  4. Micropower chemical fuel-to-electric conversion : a "regenerative flip" hydrogen concentration cell promising near carnot efficiency.

    SciTech Connect (OSTI)

    Wally, Karl

    2006-05-01

    Although battery technology is relatively mature, power sources continue to impose serious limitations for small, portable, mobile, or remote applications. A potentially attractive alternative to batteries is chemical fuel-to-electric conversion. Chemical fuels have volumetric energy densities 4 to 10 times those of batteries. However, realizing this advantage requires efficient chemical fuel-to-electric conversion. Direct electrochemical conversion would be the ideal, but, for most fuels, is generally not within the state-of-the-science. Next best, chemical-to-thermal-to-electric conversion can be attractive if efficiencies can be kept high. This small investigative project was an exploration into the feasibility of a novel hybrid (i.e., thermal-electrochemical) micropower converter of high theoretical performance whose demonstration was thought to be within near-term reach. The system is comprised of a hydrogen concentration electrochemical cell with physically identical hydrogen electrodes as anode and cathode, with each electrode connected to physically identical hydride beds each containing the same low-enthalpy-of-formation metal hydride. In operation, electrical power is generated by a hydrogen concentration differential across the electrochemical cell. This differential is established via coordinated heating and passive cooling of the corresponding hydride source and sink. Heating is provided by the exothermic combustion (i.e., either flame combustion or catalytic combustion) of a chemical fuel. Upon hydride source depletion, the role of source and sink are reversed, heating and cooling reversed, electrodes commutatively reversed, cell operation reversed, while power delivery continues unchanged. This 'regenerative flip' of source and sink hydride beds can be cycled continuously until all available heating fuel is consumed. Electricity is efficiently generated electrochemically, but hydrogen is not consumed, rather the hydrogen is regeneratively cycled as an electrochemical 'working fluid'.

  5. 1999 Commercial Buildings Characteristics--Conservation Features...

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

    Conservation Features and Practices Topics: Energy Sources and End Uses End-Use Equipment Conservation Features and Practices Conservation Features and Practices The 1999 CBECS...

  6. The MCLIB library: New features

    SciTech Connect (OSTI)

    Seeger, P.A.

    1996-12-31

    This report describes the philosophy and structure of MCLIB, A Fortran library of Monte Carlo subroutines which has been developed to test designs of neutron scattering instruments. Emphasis is placed on new features added to the library since the previous presentation of MCLIB at ICANS-XIII in October, 1995. These new features include toroidal mirrors, writing and reading source files, splitting and banking of histories, and a Maxwellian probability distribution. The only change of a program structure has been to include charge and polarization vector in the description of a particle. The latest release of the source code and documentation may be obtained by anonymous ftp. Work is also continuing on a more friendly web-based user interface, and user input is requested for additional features to be added to the library.

  7. NIF featured on BBC "Horizon"

    ScienceCinema (OSTI)

    Brian Cox

    2010-09-01

    The National Ignition Facility, the world's largest laser system, located at Lawrence Livermore National Laboratory, was featured in the BBC broadcast "Horizon" hosted by physicist Brian Cox. Here is the NIF portion of the program, which was entitled "Can We Make A Star On Earth?" This video is used with the express permission of the BBC.

  8. Feature Stories | Argonne National Laboratory

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

    Feature Stories Topic - Any - General Argonne Information -Awards -Honors Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering ---Biofuels ---Diesel ---Electric drive technology ---Fuel economy ---Fuel injection ---Heavy-duty vehicles ---Hybrid & electric vehicles ---Hydrogen & fuel cells ---Internal combustion ---Maglev systems ---Powertrain research ---Vehicle testing --Building design ---Construction ---Industrial heating & cooling ---Industrial

  9. Feature Stories | Argonne National Laboratory

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

    Feature Stories Topic - Any - General Argonne Information -Awards -Honors Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering ---Biofuels ---Diesel ---Electric drive technology ---Fuel economy ---Fuel injection ---Heavy-duty vehicles ---Hybrid & electric vehicles ---Hydrogen & fuel cells ---Internal combustion ---Maglev systems ---Powertrain research ---Vehicle testing --Building design ---Construction ---Industrial heating & cooling ---Industrial

  10. Feature Stories | Argonne National Laboratory

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

    Feature Stories Topic - Any - General Argonne Information -Awards -Honors Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering ---Biofuels ---Diesel ---Electric drive technology ---Fuel economy ---Fuel injection ---Heavy-duty vehicles ---Hybrid & electric vehicles ---Hydrogen & fuel cells ---Internal combustion ---Maglev systems ---Powertrain research ---Vehicle testing --Building design ---Construction ---Industrial heating & cooling ---Industrial

  11. Feature Stories | Argonne National Laboratory

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

    Feature Stories Topic - Any - General Argonne Information -Awards -Honors Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering ---Biofuels ---Diesel ---Electric drive technology ---Fuel economy ---Fuel injection ---Heavy-duty vehicles ---Hybrid & electric vehicles ---Hydrogen & fuel cells ---Internal combustion ---Maglev systems ---Powertrain research ---Vehicle testing --Building design ---Construction ---Industrial heating & cooling ---Industrial

  12. Feature Stories | Argonne National Laboratory

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

    Feature Stories Topic - Any - General Argonne Information -Awards -Honors Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering ---Biofuels ---Diesel ---Electric drive technology ---Fuel economy ---Fuel injection ---Heavy-duty vehicles ---Hybrid & electric vehicles ---Hydrogen & fuel cells ---Internal combustion ---Maglev systems ---Powertrain research ---Vehicle testing --Building design ---Construction ---Industrial heating & cooling ---Industrial

  13. NIF featured on BBC "Horizon"

    SciTech Connect (OSTI)

    Brian Cox

    2010-01-12

    The National Ignition Facility, the world's largest laser system, located at Lawrence Livermore National Laboratory, was featured in the BBC broadcast "Horizon" hosted by physicist Brian Cox. Here is the NIF portion of the program, which was entitled "Can We Make A Star On Earth?" This video is used with the express permission of the BBC.

  14. Regenerative amplification of femtosecond pulses: Design and construction of a sub-100fs, {mu}J laser system

    SciTech Connect (OSTI)

    Schumacher, A.B. |

    1996-10-01

    Femtosecond lasers are a powerful tool for a wealth of applications in physics, chemistry and biology. In most cases, however, their use is fundamentally restricted to a rather narrow spectral range. This thesis deals with the construction and characterization of a femtosecond light source for spectroscopic applications which overcomes that restriction. It is demonstrated how the output of a continuously pumped Ti:sapphire femtosecond oscillator is amplified to the {mu}J level, while the pulse duration remains below 100fs. A combination of continuous pumping, acousto-optic switching and Ti:Al{sub 2}O{sub 3} as a gain medium allows amplification at high repetition rates. By focusing the high energy pulses into a sapphire crystal, a broad-band continuum can be generated, extended in wavelengths over several hundred nanometers. To accomplish amplification of three orders of magnitude while maintaining the pulse length, a regenerative multipass amplifier system was built. The thesis describes theoretical design, realization and characterization of the system. Theoretical calculations and preliminary measurements were carried out and allow a critical evaluation of the final performance.

  15. Regenerative Amplification of Femtosecond Pulses: Design andConstruction of a sub-100fs, muon J Laser System

    SciTech Connect (OSTI)

    Schumacher, Andreas B.

    1996-10-01

    Femtosecond lasers are a powerful tool for a wealth of applications in physics, chemistry and biology. In most cases, however, their use is fundamentally restricted to a rather narrow spectral range. This thesis deals with the construction and characterization of a femtosecond light source for spectroscopic applications which overcomes that restriction. It is demonstrated how the output of a continuously pumped Ti:sapphire femtosecond oscillator is amplified to the {mu}J level,while the pulse duration remains below 100 fs. A combination of continuous pumping, acousto-optic switching and Ti:Al{sub 2}O{sub 3} as a gain medium allows amplification at high repetition rates. By focusing the high energy pulses into a sapphire crystal, a broad-band continuum can be generated, extended in wavelengths over several hundred nanometers. To accomplish amplification of three orders of magnitude while maintaining the pulse length, a regenerative multipass amplifier system was built. The thesis describes theoretical design, realization and characterization of the system. Theoretical calculations and preliminary measurements were carried out and allow a critical evaluation of the final performance.

  16. Design of Roadside Safety Features

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

    Analysis and Design of the Roadside Safety Features for Safety Performance Texas Transportation Institute (TTI) researchers are investigating the performance of a crash wall design to determine its effectiveness in reducing the damage to mechanically supported earth (MSE) wall panels during a vehicular impact. The simulations are based on Test Level 4 impact conditions of the new AASHTO Manual for Assessing Safety Hardware (MASH). This involves a 10,000-kg single unit truck (SUT) impacting at 90

  17. Feature Stories | Argonne National Laboratory

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

    Feature Stories Date Posted sort ascending "I was interested in mathematics and problem solving from a very early age," said Katrin Heitmann, a computational physicist and computational scientist in Argonne's high energy physics department. Women in STEM careers: Breaking down barriers Three Argonne researchers share their experiences, why they pursued STEM careers, and how they're continuing to help the next generation of scientists and engineers to flourish. March 7, 2016 What might

  18. Feature Stories | The Ames Laboratory

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

    Feature Stories Canfield to head APS Condensed Matter Division Ames Laboratory physicist Paul Canfield has always been a vocal proponent of his field, condensed matter physics, but he's about to take it up a notch. In March, Canfield will begin a four-year leadership stint heading up the Condensed Matter Physics Division of the American Physical Society. APS recently announced that Canfield had been elected vice-chair of the CMP division. READ MORE Science and technology stories from Ames

  19. Features | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Features | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery Jobs Apply for Our Jobs Our Jobs Working at NNSA Blog Home

  20. Alternative Fuels Data Center: News and Features

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    About Printable Version Share this resource Send a link to Alternative Fuels Data Center: News and Features to someone by E-mail Share Alternative Fuels Data Center: News and Features on Facebook Tweet about Alternative Fuels Data Center: News and Features on Twitter Bookmark Alternative Fuels Data Center: News and Features on Google Bookmark Alternative Fuels Data Center: News and Features on Delicious Rank Alternative Fuels Data Center: News and Features on Digg Find More places to share

  1. @ work' video segment features Robotic Software Engineer

    ScienceCinema (OSTI)

    Idaho National Laboratory

    2010-01-08

    @ work highlights Idaho National Laboratory employees and the jobs they perform.This segment features Robotic Software Engineer Miles Walton.

  2. DOE - NNSA/NFO -- Featured Items

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

    Featured Items [includes/language.htm] Featured Items The Nevada Field Office Featured Items section provides quick access to brief program updates and some of the more popular new content posted to our internet site. Publications listed or referenced in the featured item section on the main web page can be found in the Library section under publications. Instructions: Click the document title to view or download the Adobe PDF file marked with this icon ( PDF icon ) [ PDF Help | Free Viewer ]

  3. ARM - Feature Stories and Releases Article

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

    September 25, 2009 [Feature Stories and Releases] Nature Magazine Features Mobile Facility Deployment In China Bookmark and Share A news feature published in Vol. 461 of Nature magazine covers the ARM Mobile Facility deployment in China. A news feature published in Vol. 461 of Nature magazine covers the ARM Mobile Facility deployment in China. In 2008, with all eyes on Beijing during the Olympics, the ARM Mobile Facility quietly obtained eight months of climate data from the city of Shouxian,

  4. Flexible feature interface for multimedia sources

    DOE Patents [OSTI]

    Coffland, Douglas R. (Livermore, CA)

    2009-06-09

    A flexible feature interface for multimedia sources system that includes a single interface for the addition of features and functions to multimedia sources and for accessing those features and functions from remote hosts. The interface utilizes the export statement: export "C" D11Export void FunctionName(int argc, char ** argv,char * result, SecureSession *ctrl) or the binary equivalent of the export statement.

  5. Composite, ordered material having sharp surface features

    DOE Patents [OSTI]

    D'Urso, Brian R.; Simpson, John T.

    2006-12-19

    A composite material having sharp surface features includes a recessive phase and a protrusive phase, the recessive phase having a higher susceptibility to a preselected etchant than the protrusive phase, the composite material having an etched surface wherein the protrusive phase protrudes from the surface to form a sharp surface feature. The sharp surface features can be coated to make the surface super-hydrophobic.

  6. Satellite stories featured in Lab lecture series

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

    Satellite stories featured Satellite stories featured in Lab lecture series Space adventures will be featured in the upcoming Frontiers in Science lecture series "Small Satellites on a Shoestring: The LANL Experience." February 14, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new

  7. LC-IMS-MS Feature Finder

    Energy Science and Technology Software Center (OSTI)

    2013-03-07

    LC-IMS-MS Feature Finder is a command line software application which searches for possible molecular ion signatures in multidimensional liquid chromatography, ion mobility spectrometry, and mass spectrometry data by clustering deisotoped peaks with similar monoisotopic mass values, charge states, elution times, and drift times. The software application includes an algorithm for detecting multiple conformations and co-eluting species in the ion mobility dimension. LC-IMS-MS Feature Finder is designed to create an output file with detected features thatmoreincludes associated information about the detected features.less

  8. Digital Mapping Of Structurally Controlled Geothermal Features...

    Open Energy Info (EERE)

    GPS Units And Pocket Computers Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Digital Mapping Of Structurally Controlled Geothermal Features...

  9. LC-IMS-MS Feature Finder

    SciTech Connect (OSTI)

    2013-03-07

    LC-IMS-MS Feature Finder is a command line software application which searches for possible molecular ion signatures in multidimensional liquid chromatography, ion mobility spectrometry, and mass spectrometry data by clustering deisotoped peaks with similar monoisotopic mass values, charge states, elution times, and drift times. The software application includes an algorithm for detecting multiple conformations and co-eluting species in the ion mobility dimension. LC-IMS-MS Feature Finder is designed to create an output file with detected features that includes associated information about the detected features.

  10. ARM - Feature Stories and Releases Article

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

    26, 2013 Facility News, Feature Stories and Releases Climate Data Now Flowing from Oliktok, Alaska Bookmark and Share New climate observatory records atmospheric measurements at...

  11. Image fusion using sparse overcomplete feature dictionaries

    DOE Patents [OSTI]

    Brumby, Steven P.; Bettencourt, Luis; Kenyon, Garrett T.; Chartrand, Rick; Wohlberg, Brendt

    2015-10-06

    Approaches for deciding what individuals in a population of visual system "neurons" are looking for using sparse overcomplete feature dictionaries are provided. A sparse overcomplete feature dictionary may be learned for an image dataset and a local sparse representation of the image dataset may be built using the learned feature dictionary. A local maximum pooling operation may be applied on the local sparse representation to produce a translation-tolerant representation of the image dataset. An object may then be classified and/or clustered within the translation-tolerant representation of the image dataset using a supervised classification algorithm and/or an unsupervised clustering algorithm.

  12. Nature Climate Change features Los Alamos forest research

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

    Nature Climate Change Features Forest Research Nature Climate Change features Los Alamos forest research The print issue features as its cover story the tree-stress research of...

  13. Nature climate change features Los Alamos forest research

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

    Nature climate change features forest research Nature climate change features Los Alamos forest research The print issue features as its cover story the tree-stress research of...

  14. Feature Based Measuring, Version 2.1

    Energy Science and Technology Software Center (OSTI)

    2002-07-22

    A model-based tool that uses Measurement Features for generating measurement plans that facilitate DMIS compliant CMM Measurement part programs for both manufacturing verification and/or product acceptance.

  15. ARM - Feature Stories and Releases Article

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

    26, 2015 Feature Stories and Releases Delineating the Sharp Edges of Clouds, Down to the Micrometer Bookmark and Share The HOLODEC, developed in part with funding from the ARM...

  16. ARM - Feature Stories and Releases Article

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

    5, 2013 Facility News, Feature Stories and Releases New England Winter No Match for Science on the Cape Bookmark and Share Snow sticking to the sides of these playful statues in...

  17. Category:Topographic Features | Open Energy Information

    Open Energy Info (EERE)

    Features" The following 9 pages are in this category, out of 9 total. C Caldera Depression Cinder Cone F Flat H Horst and Graben L Lava Dome M Mountainous R Resurgent Dome...

  18. Feature Clustering for Accelerating Parallel Coordinate Descent

    SciTech Connect (OSTI)

    Scherrer, Chad; Tewari, Ambuj; Halappanavar, Mahantesh; Haglin, David J.

    2012-12-06

    We demonstrate an approach for accelerating calculation of the regularization path for L1 sparse logistic regression problems. We show the benefit of feature clustering as a preconditioning step for parallel block-greedy coordinate descent algorithms.

  19. ARM - Feature Stories and Releases Article

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

    Feature Stories and Releases Ahoy It's MAGIC in the Pacific Bookmark and Share A crane operator carefully moves the AMF2's Roll-Pitch-Yaw stabilization platform into...

  20. ARM - Feature Stories and Releases Article

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

    November 4, 2004 [Feature Stories and Releases] Media Advisory: New Climate Education Resource Available Online for Teachers and Students Bookmark and Share Media Contact: Lynne Roeder, 509.372.4331 Technical Contact: Andrea Maestas, 505.665.7997 LOS ALAMOS, N.M.-A newly designed education website sponsored by the U.S. Department of Energy (DOE) features activities and information about climate change and atmospheric science for students and teachers. Education and outreach staff involved in

  1. Topology-based Feature Definition and Analysis

    SciTech Connect (OSTI)

    Weber, Gunther H.; Bremer, Peer-Timo; Gyulassy, Attila; Pascucci, Valerio

    2010-12-10

    Defining high-level features, detecting them, tracking them and deriving quantities based on them is an integral aspect of modern data analysis and visualization. In combustion simulations, for example, burning regions, which are characterized by high fuel-consumption, are a possible feature of interest. Detecting these regions makes it possible to derive statistics about their size and track them over time. However, features of interest in scientific simulations are extremely varied, making it challenging to develop cross-domain feature definitions. Topology-based techniques offer an extremely flexible means for general feature definitions and have proven useful in a variety of scientific domains. This paper will provide a brief introduction into topological structures like the contour tree and Morse-Smale complex and show how to apply them to define features in different science domains such as combustion. The overall goal is to provide an overview of these powerful techniques and start a discussion how these techniques can aid in the analysis of astrophysical simulations.

  2. LBS GatlingGun13A (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Technical Information Service, Springfield, VA at www.ntis.gov. Authors: Martinez, D ; Kane, J O ; Heeter, R ; Casner, A ; Mancini, R Publication Date: 2013-10-09 OSTI Identifier:...

  3. Sandia National Laboratories: 13,051 lbs of Carpet Sent for Reuse

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

    The carpet goes to nonprofit organizations, flood victims, or others just seeking a sustainable practice by implementing used carpet into their home or work space. Not only has P2...

  4. LBS GatlingGun13A (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Research Org: Lawrence Livermore National Laboratory (LLNL), Livermore, CA Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 42 ENGINEERING ...

  5. Feature recognition applications in mesh generation

    SciTech Connect (OSTI)

    Tautges, T.J.; Liu, S.S.; Lu, Y.; Kraftcheck, J.; Gadh, R.

    1997-06-01

    The use of feature recognition as part of an overall decomposition-based hexahedral meshing approach is described in this paper. The meshing approach consists of feature recognition, using a c-loop or hybrid c-loop method, and the use of cutting surfaces to decompose the solid model. These steps are part of an iterative process, which proceeds either until no more features can be recognized or until the model has been completely decomposed into meshable sub-volumes. This method can greatly reduce the time required to generate an all-hexahedral mesh, either through the use of more efficient meshing algorithms on more of the geometry or by reducing the amount of manual decomposition required to mesh a volume.

  6. Supai salt karst features: Holbrook Basin, Arizona

    SciTech Connect (OSTI)

    Neal, J.T.

    1994-12-31

    More than 300 sinkholes, fissures, depressions, and other collapse features occur along a 70 km (45 mi) dissolution front of the Permian Supai Formation, dipping northward into the Holbrook Basin, also called the Supai Salt Basin. The dissolution front is essentially coincident with the so-called Holbrook Anticline showing local dip reversal; rather than being of tectonic origin, this feature is likely a subsidence-induced monoclinal flexure caused by the northward migrating dissolution front. Three major areas are identified with distinctive attributes: (1) The Sinks, 10 km WNW of Snowflake, containing some 200 sinkholes up to 200 m diameter and 50 m depth, and joint controlled fissures and fissure-sinks; (2) Dry Lake Valley and contiguous areas containing large collapse fissures and sinkholes in jointed Coconino sandstone, some of which drained more than 50 acre-feet ({approximately}6 {times} 10{sup 4} m{sup 3}) of water overnight; and (3) the McCauley Sinks, a localized group of about 40 sinkholes 15 km SE of Winslow along Chevelon Creek, some showing essentially rectangular jointing in the surficial Coconino Formation. Similar salt karst features also occur between these three major areas. The range of features in Supai salt are distinctive, yet similar to those in other evaporate basins. The wide variety of dissolution/collapse features range in development from incipient surface expression to mature and old age. The features began forming at least by Pliocene time and continue to the present, with recent changes reportedly observed and verified on airphotos with 20 year repetition. The evaporate sequence along interstate transportation routes creates a strategic location for underground LPG storage in leached caverns. The existing 11 cavern field at Adamana is safely located about 25 miles away from the dissolution front, but further expansion initiatives will require thorough engineering evaluation.

  7. New Features of the Edison XC30

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

    New Features of the Edison XC30 New Features of the Edison XC30 While the Edison and Hopper systems have similar programming environments and software, there are some key architectural differences between the two systems. This page describes those differences. Compute nodes Edison and Hopper both have a total of 24 cores on each compute node. Edison, like Hopper, has two sockets on each compute node, but instead of four "NUMA" memory domains, Edison has only two. Edison uses Intel

  8. ARM - Feature Stories and Releases Article

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

    September 11, 2009 [Feature Stories and Releases] Open House Draws Crowd to ARM Climate Research Facility Display Bookmark and Share Mild summer temperatures helped bring thousands of visitors through the gates of Argonne National Laboratory on August 29 for an open house, which featured a display about the ARM Climate Research Facility. Located in one of six very large tents in the middle of the Argonne campus, the display occupied about 50 feet by 30 feet-nearly ¼ of the tent space. Doug

  9. ARM - 2009 AGU Presentations Featuring ARM Data

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

    Center2009 AGU Presentations Featuring ARM Data Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News

  10. ARM - 2010 AMS Presentations Featuring ARM Data

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

    0 AMS Presentations Featuring ARM Data Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes

  11. ARM - 2011 AMS Presentations Featuring ARM Data

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

    1 AMS Presentations Featuring ARM Data Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes

  12. ARM - 2012 AMS Presentations Featuring ARM Data

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

    2 AMS Presentations Featuring ARM Data Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes

  13. ARM - 2013 AMS Presentations Featuring ARM Data

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

    3 AMS Presentations Featuring ARM Data Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes

  14. ARM - 2014 AMS Presentations Featuring ARM Data

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

    4 AMS Presentations Featuring ARM Data Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes

  15. ARM - AGU Presentations Featuring ARM Data

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

    CenterAGU Presentations Featuring ARM Data Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes107 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 ENA 1 GOAMAZON 7 MAGIC 15 MC3E 17 PECAN 3 SGP 7 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field

  16. Life cycle inventory analysis of regenerative thermal oxidation of air emissions from oriented strand board facilities in Minnesota - a perspective of global climate change

    SciTech Connect (OSTI)

    Nicholson, W.J.

    1997-12-31

    Life cycle inventory analysis has been applied to the prospective operation of regenerative thermal oxidation (RTO) technology at oriented strand board plants at Bemidji (Line 1) and Cook, Minnesota. The net system destruction of VOC`s and carbon monoxide, and at Cook a small quantity of particulate, has a very high environmental price in terms of energy and water use, global warming potential, sulfur and nitrogen oxide emissions, solids discharged to water, and solid waste deposited in landfills. The benefit of VOC destruction is identified as minor in terms of ground level ozone at best and possibly slightly detrimental. Recognition of environmental tradeoffs associated with proposed system changes is critical to sound decision-making. There are more conventional ways to address carbon monoxide emissions than combustion in RTO`s. In an environment in which global warming is a concern, fuel supplemental combustion for environmental control does not appear warranted. Consideration of non-combustion approaches to address air emission issues at the two operations is recommended. 1 ref., 5 tabs.

  17. Geothermal Energy Featured on NBC's Today Show

    Broader source: Energy.gov [DOE]

    In Iceland, there are five major geothermal power plants which produce about 26% (2006) of the country's electricity. In addition, geothermal heating meets the heating and hot water requirements for around 87% of the nation's buildings. As part of its "Ends of the Earth" series, NBC's Today Show presented a feature on the use of geothermal energy in Iceland.

  18. Fizzy. Feature subset selection for metagenomics

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

    Ditzler, Gregory; Morrison, J. Calvin; Lan, Yemin; Rosen, Gail L.

    2015-11-04

    Background: Some of the current software tools for comparative metagenomics provide ecologists with the ability to investigate and explore bacterial communities using α– & β–diversity. Feature subset selection – a sub-field of machine learning – can also provide a unique insight into the differences between metagenomic or 16S phenotypes. In particular, feature subset selection methods can obtain the operational taxonomic units (OTUs), or functional features, that have a high-level of influence on the condition being studied. For example, in a previous study we have used information-theoretic feature selection to understand the differences between protein family abundances that best discriminate betweenmore » age groups in the human gut microbiome. Results: We have developed a new Python command line tool, which is compatible with the widely adopted BIOM format, for microbial ecologists that implements information-theoretic subset selection methods for biological data formats. We demonstrate the software tools capabilities on publicly available datasets. Conclusions: We have made the software implementation of Fizzy available to the public under the GNU GPL license. The standalone implementation can be found at http://github.com/EESI/Fizzy.« less

  19. Semantic Features for Classifying Referring Search Terms

    SciTech Connect (OSTI)

    May, Chandler J.; Henry, Michael J.; McGrath, Liam R.; Bell, Eric B.; Marshall, Eric J.; Gregory, Michelle L.

    2012-05-11

    When an internet user clicks on a result in a search engine, a request is submitted to the destination web server that includes a referrer field containing the search terms given by the user. Using this information, website owners can analyze the search terms leading to their websites to better understand their visitors needs. This work explores some of the features that can be used for classification-based analysis of such referring search terms. We present initial results for the example task of classifying HTTP requests countries of origin. A system that can accurately predict the country of origin from query text may be a valuable complement to IP lookup methods which are susceptible to the obfuscation of dereferrers or proxies. We suggest that the addition of semantic features improves classifier performance in this example application. We begin by looking at related work and presenting our approach. After describing initial experiments and results, we discuss paths forward for this work.

  20. Special Feature: Five Questions for Sudip Dosanjh

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

    Five Questions for Sudip Dosanjh Special Feature: Five Questions for Sudip Dosanjh September 27, 2013 Sudip-wide.jpg Sudip Dosanjh Sudip Dosanjh is Director of the National Energy Research Scientific Computing (NERSC) Center at Lawrence Berkeley National Laboratory. NERSC's mission is to accelerate scientific discovery at the U.S. Department of Energy's Office of Science through high performance computing and extreme data analysis. NERSC deploys leading-edge computational and data resources for

  1. Special Feature: Supercomputers Map Our Changing Climate

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

    Supercomputers Map Our Changing Climate Special Feature: Supercomputers Map Our Changing Climate September 23, 2013 Contact: Jon Bashor, jbashor@lbl.gov, 510-486-5849 cam5-hurricane-2145950x400.jpg In this simulation, Berkeley researchers used the finite volume version of NCAR's Community Atmosphere Model to see how well the model can reproduced observed tropical cyclone statistics. The simulated storms seen in this animation are generated spontaneously from the model's simulated weather

  2. NREL Open House Features Energy Activities, Tours

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

    Open House Features Energy Activities, Tours For more information contact: e:mail: Public Affairs Golden, Colo., July 8, 1999 — Discover the power of clean energy at the nation's premier laboratory for renewable energy and energy efficiency research, development and deployment. The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) will open its doors 10 a.m. to 3 p.m., Saturday, July 24 for tours of its research facilities and interactive exhibits at the Visitors Center.

  3. ARM - Feature Stories and Releases Article

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

    February 26, 2007 [Feature Stories and Releases] Arctic Winter Provides Window of Opportunity to Improve Climate Models Bookmark and Share Dry winter conditions allows scientists to explore elusive portions of the electromagnetic spectrum Contact: Lynne Roeder, 509.372.4331 In conjunction with other scientific activities taking place during International Polar Year 2007-2008, today an international research team begins a three-week field campaign in Barrow, Alaska. The experiment, which is

  4. ARM - Feature Stories and Releases Article

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

    November 16, 2010 [Feature Stories and Releases] Future Field Campaigns Span Atlantic Ocean to Indian Ocean Bookmark and Share Each year, the ARM Climate Research Facility reviews proposals to use key components of the Facility for extended field campaigns. The Department of Energy recently announced the selection of major ARM field campaigns that will take place from 2011 through 2014. Studies led by principal investigators Chuck Long, Carl Berkowitz, and Scot Martin will examine atmospheric

  5. ARM - Feature Stories and Releases Article

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

    December 9, 2010 [Feature Stories and Releases] Scientists Begin 5-month Study of Cloud Life Cycles Bookmark and Share Instruments at four mountain sites gather data to improve climate models. For Immediate Release: Thursday, December 9, 2010 Just outside Thunderhead Lodge in the Steamboat Springs ski area, one of the ARM Mobile Facility sites hosts a scanning cloud radar and several other instruments. Just outside Thunderhead Lodge in the Steamboat Springs ski area, one of the ARM Mobile

  6. ARM - Feature Stories and Releases Article

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

    December 7, 2010 [Feature Stories and Releases] User Facility Highlights at 2010 AGU Fall Meeting Bookmark and Share Scientists from around the world use data from the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility to study the interactions between clouds, aerosol, and radiation. At this year's American Geophysical Union (AGU) Fall Meeting, ARM's scientific users are presenting dozens of oral and poster sessions describing their research using data

  7. ARM - Feature Stories and Releases Article

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

    6, 2006 [Feature Stories and Releases] ARM Program Develops Education Tool Focused on Tropical Climate Bookmark and Share Press Release Media Contact: Lynne Roeder, 509.372.4331 A new kiosk, provided by the ARM Program, is available in Darwin for visitors to learn about climate change in the region. A new educational kiosk on tropical climate, developed by the U.S. Department of Energy's (DOE) Atmospheric Radiation Measurement (ARM) Program and the Museum and Art Gallery of the Northern

  8. ARM - Feature Stories and Releases Article

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

    4, 2006 [Feature Stories and Releases] Tropical Cloud Study Concludes; Science Students Play Key Role Bookmark and Share Press Release Media Contact: Lynne Roeder, 509.372.4331 Three and a half weeks after it started, the Tropical Warm Pool International Cloud Experiment has resulted in one of the most comprehensive data sets of tropical cloud properties ever collected. Co-led by scientist from the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Program and the Australian

  9. ARM - Feature Stories and Releases Article

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

    2, 2006 [Feature Stories and Releases] Synchronized Flights by U.S. and International Research Aircraft Reveal Intriguing Information about Ice Particles in Clouds Bookmark and Share Press Release Media Contact: Lynne Roeder, ARM Public Information Officer U.S. Tel: 509.521.2921 Au Tel: +61 0406 754 686 In the clouds above Darwin, Australia, pilots guided by a team of international climate scientists are now one week into a series of carefully orchestrated flights to obtain key in situ data

  10. ARM - Feature Stories and Releases Article

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

    January 12, 2006 [Feature Stories and Releases] U.S. Climate Scientists Join Collaborators in Australia to Begin Tropical Cloud Experiment Bookmark and Share Media Advisory Media Contact: Lynne Roeder, 509.372.4331 More than 100 researchers from around the world are gathering in Darwin, Australia, as they prepare to launch simultaneous ground, sea and sky operations during the Tropical Warm Pool International Cloud Experiment. The experiment, organized jointly by the U.S. Department of Energy

  11. ARM - Feature Stories and Releases Article

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

    8, 2005 [Feature Stories and Releases] International Climate Researchers Meet in U.S. to Simulate Flight Operations for Tropical Storm Cloud Experiment Bookmark and Share Press Release Media Contact: Lynne Roeder, 509.372.4331 Technical Contact: Mike Janes, 925.294.2447 The Southern Surveyor research vessel will be equipped with a full compliment of surface-based instrumentation for measuring atmospheric and oceanographic properties. The ship will also serve as one of the locations for launching

  12. ARM - Feature Stories and Releases Article

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

    1, 2005 [Feature Stories and Releases] Climate Scientists Gather at Sandia National Laboratories to Simulate Tropical Cloud Experiment Bookmark and Share Media Advisory Media Contact: Lynne Roeder, 509.372.4331 Technical Contact: Mike Janes, 925.294.2447 The ARM Program-the Department of Energy's largest global change research program-was created to help resolve scientific uncertainties related to global climate change. Its specific focus is on the crucial role of clouds and their influence on

  13. ARM - Feature Stories and Releases Article

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

    Facility News, Feature Stories and Releases] Mobile Facility Anchors U.S.-India Collaboration for Cloud-Aerosol Studies Bookmark and Share In early June, installation of the ARM Mobile Facility instrument suite is underway at the ARIES Observatory in Nainital, India. In early June, installation of the ARM Mobile Facility instrument suite is underway at the ARIES Observatory in Nainital, India. The past few decades have seen rapid increases in economic activity in many Asian countries. This is

  14. ARM - Feature Stories and Releases Article

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

    Feature Stories and Releases] U.S. Department of Energy Kicks Off Scientific Collaboration with India Bookmark and Share Instrumented sites will gather data to study impact of aerosols on cloud formation and precipitation For Immediate Release: June 10, 2011 ARM Mobile Facility instrumentation is installed in June 2011 at the ARIES Observatory in Nainital, India, for the Ganges Valley Aerosol Experiment (GVAX). Shown in this photo are the stack for the aerosol observing system (top) and the

  15. ARM - Feature Stories and Releases Article

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

    28, 2011 [Feature Stories and Releases] Storm Study in Oklahoma Records Extreme Weather Events Bookmark and Share During MC3E, convective clouds like these were measured by NASA research aircraft and numerous radars throughout the ARM Southern Great Plains site, including these radars at the SGP Central Facility. During MC3E, convective clouds like these were measured by NASA research aircraft and numerous radars throughout the ARM Southern Great Plains site, including these radars at the SGP

  16. ARM - Feature Stories and Releases Article

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

    September 28, 2011 [Facility News, Feature Stories and Releases, Publications] Pass the lotion; new study shows drying trend over Great Plains Bookmark and Share Analysis of infrared energy levels useful for similar evaluations at local scale Illustration of seasonal infrared energy trends observed at the ARM Southern Great Plains site between 1996 and 2010. Click on image to enlarge. Illustration of seasonal infrared energy trends observed at the ARM Southern Great Plains site between 1996 and

  17. ARM - Feature Stories and Releases Article

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

    November 14, 2011 [Feature Stories and Releases] New Study Reveals and Quantifies Magnitude of Long-term Aerosol Effects on Clouds and Precipitation Bookmark and Share Cloud radars measure an incoming storm at the ARM Southern Great Plains site in Oklahoma. Cloud radars measure an incoming storm at the ARM Southern Great Plains site in Oklahoma. 10 years of data from ARM Southern Great Plains site corroborate satellite measurements; match model A study published in Nature Geoscience this week

  18. ARM - Feature Stories and Releases Article

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

    1, 2011 [Feature Stories and Releases] User Facility Highlights at AGU 2011 Fall Meeting Bookmark and Share Researchers around the world use data from the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility to study the interactions between clouds, aerosols, and radiation. At this year's American Geophysical Union Fall Meeting, ARM's scientific users are presenting dozens of oral and poster sessions describing their research using data from the user

  19. ARM - Feature Stories and Releases Article

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

    January 31, 2012 [Feature Stories and Releases] Expanding Horizons for Climate Research Bookmark and Share New observation sites in Arctic, Atlantic Ocean provide details of important climate regimes One of the continuing challenges for scientists trying to understand and predict the future of Earth's climate system is the lack of accurate, long-term reference data sets from the various types of climate regimes. In a few months, the U.S. Department of Energy's Atmospheric Radiation Measurement

  20. ARM - Feature Stories and Releases Article

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

    3, 2012 [Feature Stories and Releases] SGP Site Staff Share Successes, Challenges in the Name of Science Bookmark and Share Large-scale observation network in Korea opens door to new collaborations Daniel Hartsock and Dr. Kyungjeen Park look on as Pat Dowell describes the operation of a disdrometer at the SGP site. A sensor under the instrument's 'hood' measures rain rate and drop size distribution. Daniel Hartsock and Dr. Kyungjeen Park look on as Pat Dowell describes the operation of a

  1. ARM - Feature Stories and Releases Article

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

    0, 2012 [Feature Stories and Releases] ARM Mobile Facility Completes Aerosol Campaign in India Bookmark and Share First-ever Indo-U.S. collaboration for climate research sets stage for future joint scientific endeavors Clouds gather in the foothills below the ARIES Observatory in Nainital, India, where the ARM Mobile Facility operated from June 2011 through March 2012. Clouds gather in the foothills below the ARIES Observatory in Nainital, India, where the ARM Mobile Facility operated from June

  2. ARM - Feature Stories and Releases Article

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

    July 26, 2012 [Feature Stories and Releases] Capturing Aerosol Evolution at Cape Cod Bookmark and Share From July 2012 to June 2013, nearly sixty instruments are obtaining atmospheric data from the ARM Mobile Facility site at Cape Cod National Seashore in Massachusetts. From July 2012 to June 2013, nearly sixty instruments are obtaining atmospheric data from the ARM Mobile Facility site at Cape Cod National Seashore in Massachusetts. Starting this month and lasting through June 2013, the ARM

  3. ARM - Feature Stories and Releases Article

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

    August 13, 2012 [Feature Stories and Releases] Up Close and Personal at Cape Cod National Seashore Bookmark and Share Visitors make their way to the ARM Mobile Facility, located on a coastal bluff near the Highlands Center at Cape Cod National Seashore. Visitors make their way to the ARM Mobile Facility, located on a coastal bluff near the Highlands Center at Cape Cod National Seashore. Enjoying fair skies and ocean breezes, a large and enthusiastic crowd gathered at the Highlands Center at Cape

  4. ARM - Feature Stories and Releases Article

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

    23, 2008 [Feature Stories and Releases] Field Campaigns for 2010 Range from the Arctic to the Azores Bookmark and Share With the recent awards, the ARM Mobile Facility deployment on Graciosa Island in the Azores is extended from its original 9-month duration, beginning in May 2009 and now lasting through November 2010. The Department of Energy recently announced the selection of major ARM field campaigns that will take place in 2010. Studies led by principal investigators Rob Wood, Hans

  5. ARM - Feature Stories and Releases Article

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

    December 20, 2012 [Education, Feature Stories and Releases] Education Collaboration Provides Motivation for Science Exploration Bookmark and Share Kids and adults flock to Cape Cod National Seashore for close-up look at science facility Cathy Skowron (far left), ARM Ranger, describes a weather balloon launch to visitors from the Carroll Center for the Blind during a tour of the ARM Mobile Facility site at Cape Cod National Seashore. Barbara Dougan, education specialist at the park who

  6. ARM - Feature Stories and Releases Article

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

    9, 2013 [Facility News, Feature Stories and Releases] DOE's Wanda Ferrell Receives Society Award for Leadership in Atmospheric Science Bookmark and Share For Immediate Release: Wednesday, January 9, 2013 Wanda Ferrell, U.S. Department of Energy Wanda Ferrell, U.S. Department of Energy AUSTIN, Texas-Today at the 2013 American Meteorological Society Annual Meeting, the U.S. Department of Energy's Wanda Ferrell is receiving the prestigious "Cleveland Abbe Award for Distinguished Service to

  7. ARM - Feature Stories and Releases Article

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

    29, 2013 [Feature Stories and Releases] New Field Campaigns Move Mobile Facility to Finland Forest and California Coast; Aircraft to Explore Aerosol and Gases Bookmark and Share Each year, the ARM Climate Research Facility receives proposals to use key components of the Facility for extended or intensive field campaigns to improve understanding of atmospheric processes that are relevant to regional and global climate. The Department of Energy (DOE) has selected the following new field campaigns

  8. ARM - Feature Stories and Releases Article

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

    July 8, 2013 [Feature Stories and Releases] Aerosol Research Heats Up During Summer Fire Season Bookmark and Share Smoke plumes rise from a forest fire. Smoke plumes rise from a forest fire. While the impacts of wildfires on people and the surrounding environment are apparent, the effect on the atmosphere from smoky soot particles-a type of aerosol-is much less so. Whether from grass, timber, or brush, each type of biological material releases its own sooty chemical signature that interacts

  9. ARM - Feature Stories and Releases Article

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

    17, 2013 [Facility News, Feature Stories and Releases] Popular Science's Brilliant 10 Includes ARM Radar Meteorologist Bookmark and Share To the casual observer, radars for weather and climate research silently go about their business, sending pulses of energy into the sky to bounce off of clouds and other particles overhead. The return signals feed into a computer where they are converted to data. Simple. Scott Collis (image courtesy Argonne National Laboratory) Scott Collis (image courtesy

  10. ARM - Feature Stories and Releases Article

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

    October 17, 2013 [Feature Stories and Releases] New Climate Research Site in the Azores Fills Critical Data Gap Bookmark and Share Newly installed on Graciosa Island in the North Atlantic Ocean, instruments at this Department of Energy research site measure incoming and outgoing energy, clouds, aerosols, and precipitation for climate studies. Newly installed on Graciosa Island in the North Atlantic Ocean, instruments at this Department of Energy research site measure incoming and outgoing

  11. ARM - Feature Stories and Releases Article

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

    13, 2013 [Facility News, Feature Stories and Releases] Research Flights Completed for Biomass Burning Field Campaign Bookmark and Share The Gulstream-1 heads toward a smoke plume during a research flight for the Biomass Burning Observation Project. The Gulstream-1 heads toward a smoke plume during a research flight for the Biomass Burning Observation Project. In late October, the ARM Aerial Facility wrapped up a busy season of research flights for the Biomass Burning Observation Project, using a

  12. ARM - Feature Stories and Releases Article

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

    February 5, 2009 [Feature Stories and Releases] What's the Skinny on Thin Clouds? Bookmark and Share Flights Obtain Long-term Statistics to Improve Data Sets for Climate Models Unlike the wispy blankets of icy cirrus clouds that appear very high in the sky, thin clouds closer to Earth's surface contain water-but often not much. They are frequently patchy and contain small amounts of water. This combination makes them difficult for ground-based instruments to accurately measure, which decreases

  13. ARM - Feature Stories and Releases Article

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

    December 30, 2013 [Feature Stories and Releases] Pole Position: New Field Campaigns Explore Arctic and Antarctic Atmosphere Bookmark and Share Each year, the ARM Climate Research Facility receives proposals to use key components of the Facility for extended or intensive field campaigns to improve understanding of atmospheric processes that are relevant to regional and global climate. The Department of Energy has selected the following field campaigns that take place from 2014 through 2016. ARM

  14. ARM - Feature Stories and Releases Article

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

    5, 2014 [Feature Stories and Releases] Biogenic Aerosols Examined in Finland Forest Bookmark and Share The second ARM Mobile Facility (AMF2) is operating in Hyytiälä, Finland, from February through September 2014 for the Biogenic Aerosols - Effects on Clouds and Climate field campaign. The second ARM Mobile Facility (AMF2) is operating in Hyytiälä, Finland, from February through September 2014 for the Biogenic Aerosols - Effects on Clouds and Climate field campaign. Biogenic aerosols are

  15. ARM - Feature Stories and Releases Article

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

    March 27, 2009 [Facility News, Feature Stories and Releases] Ceremony in the Azores Recognizes Scientific Collaborations Bookmark and Share A mix of green pastures and isolated white-housed villages dot the landscape of Graciosa Island. The ARM Mobile Facility will be located near the airport at the northern end of the island. In a signing ceremony at the Laboratorio Regional Engenharia Civil in Ponta Delgada, the Azores, government officials from the United States and Portugal formally

  16. ARM - Feature Stories and Releases Article

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

    1, 2014 [Facility News, Feature Stories and Releases] A Richly Deserved Retirement; a Job Well Done Bookmark and Share June 30, 2014, marks another key milestone in the progress and evolution of the ARM Climate Research Facility. After 20 years of leadership, Wanda Ferrell, DOE Program Director for the ARM Facility, is retiring. Under her strong and astute guidance, what began in 1989 with a 10-year vision as an observational testbed network is now entering its third decade and going strong,

  17. ARM - Feature Stories and Releases Article

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

    November 14, 2014 [Facility News, Feature Stories and Releases] Around the World in 52 Months Bookmark and Share ARM's New Research on Climate Spans the Globe Each year, the ARM Climate Research Facility receives proposals to use key components of the Facility for extended or intensive field campaigns to improve understanding of atmospheric processes that are relevant to regional and global climate. The Department of Energy has selected six field campaigns to take place from 2015 through most of

  18. ARM - Feature Stories and Releases Article

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

    15, 2015 [Facility News, Feature Stories and Releases] Studying the Amazon Basin's Climate by Air and by Land Bookmark and Share Second Intensive Operational Period Concludes for Green Ocean Amazon Campaign Partially obscured by aerosols in the atmosphere due to a large forest fire northeast of Manaus, the sun sets over the ARM Facility's Mobile Aerosol Observing System (MAOS) located southwest of Manaus, Brazil, at the T-3 site in Manacapuru where a Cimel Sunphotometer measures the optical

  19. ARM - Feature Stories and Releases Article

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

    9, 2015 [Facility News, Feature Stories and Releases] Seeing the Forest Through the Trees-And to the Aerosols Bookmark and Share End of the Biogenic Aerosols - Effects on Clouds and Climate Campaign in Finland Finnish scientists are measuring aerosols on branches as they grow in the boreal forests. Image courtesy of Juho Aalto. Finnish scientists are measuring aerosols on branches as they grow in the boreal forests. Image courtesy of Juho Aalto. Nine months in the icy, cold forests of Finland

  20. ARM - Feature Stories and Releases Article

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

    6, 2015 [Facility News, Feature Stories and Releases] Eastern North Atlantic Site Expands Data Capabilities Bookmark and Share First Year of Operations Completed in the Azores Situated near the airport on Graciosa Island, the newest ARM facility operates 24/7 to collect climate data. Situated near the airport on Graciosa Island, the newest ARM facility operates 24/7 to collect climate data. Situated off the coast of Portugal in the Azores, Graciosa Island hosts one of ARM's newest observation

  1. ARM - Feature Stories and Releases Article

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

    January 23, 2015 [Feature Stories and Releases] Chasing Aerosols and Atmospheric Rivers Bookmark and Share ARM Cloud Aerosol Precipitation Experiment (ACAPEX) sets sail and takes flight An atmospheric river branches off an equatorial storm, stretching from Hawaii to the U.S. West Coast, transporting as much moisture as 10-20 times the flow in the Mississippi River. An atmospheric river branches off an equatorial storm, stretching from Hawaii to the U.S. West Coast, transporting as much moisture

  2. ARM - Feature Stories and Releases Article

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

    February 25, 2015 [Facility News, Feature Stories and Releases] Nature Article: Carbon Dioxide's Greenhouse Effect at Earth's Surface Confirmed Using ARM Data Bookmark and Share Researchers link rising carbon dioxide levels from fossil fuels to an upward trend in radiative forcing at two locations From 2000 to the end of 2010, 3300 measurements were obtained at ARM's North Slope of Alaska site for the study. From 2000 to the end of 2010, 3300 measurements were obtained at ARM's North Slope of

  3. ARM - Feature Stories and Releases Article

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

    15, 2015 [Facility News, Feature Stories and Releases] Pilot Phase Begins for Routine Large-Eddy Simulations Bookmark and Share William Gustafson, Pacific Northwest National Laboratory William Gustafson, Pacific Northwest National Laboratory Researchers target observation and modeling together for a new level of scientific analysis on climate When it comes to clouds, the Earth's energy budget, and tiny aerosols, scientists don't have all the answers. However, each atmospheric model improvement

  4. ARM - Feature Stories and Releases Article

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

    September 14, 2015 [Feature Stories and Releases] Nocturnal Storm Chasers Collect "Fantastic" Data Set to Improve Forecasts Bookmark and Share PECAN campaign ends after scientists spend more than 30 nights monitoring storms with remote sensing instruments Approaching storm at sunset near Sawyer, Kansas, typifies the weather researchers pursued during PECAN campaign. Image courtesy of Jacob DeFlitch, Pennsylvania State University. Approaching storm at sunset near Sawyer, Kansas,

  5. ARM - Feature Stories and Releases Article

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

    November 16, 2015 [Feature Stories and Releases] Taking Stock of the Atmosphere Bookmark and Share ARM-ACME VI field campaign will chart changes in greenhouse gas levels Scientists are taking air samples at different heights above the Southern Great Plains site in this Cessna 206 aircraft. Scientists are taking air samples at different heights above the Southern Great Plains site in this Cessna 206 aircraft. For the next year, a Cessna 206 aircraft from the Atmospheric Radiation Measurement

  6. ARM - Feature Stories and Releases Article

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

    November 16, 2015 [Feature Stories and Releases] Getting an Inside View of Arctic Clouds Bookmark and Share Researchers investigate the polar atmosphere's unique properties Researchers are using unmanned aerial systems to study Arctic atmospheric processes, especially where the tundra and ocean meet. Researchers are using unmanned aerial systems to study Arctic atmospheric processes, especially where the tundra and ocean meet. On the north coast of Alaska, where the barren tundra meets the icy

  7. ARM - Feature Stories and Releases Article

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

    February 8, 2016 [Feature Stories and Releases] MAGIC Continues to Inspire Insights Bookmark and Share Data from the first extended at-sea ARM deployment are improving understanding of marine clouds Ernie Lewis, atmospheric scientist at Brookhaven National Laboratory, who led the MAGIC campaign. Image courtesy of Brookhaven National Laboratory Ernie Lewis, atmospheric scientist at Brookhaven National Laboratory, who led the MAGIC campaign. Image courtesy of Brookhaven National Laboratory Because

  8. ARM - Feature Stories and Releases Article

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

    January 19, 2016 [Feature Stories and Releases] Scientists Study Clouds' Impact on West Antarctic Ice Melt Bookmark and Share Antarctic clouds studied for first time in five decades Heath Powers, Los Alamos National Laboratory, and Dan Lubin, AWARE lead scientist, prepare a weather balloon at WAIS Divide Ice Camp. Image courtesy of Dan Lubin. Heath Powers, Los Alamos National Laboratory, and Dan Lubin, AWARE lead scientist, prepare a weather balloon at WAIS Divide Ice Camp. Image courtesy of Dan

  9. ARM - Feature Stories and Releases Article

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

    7, 2007 [Feature Stories and Releases] Researchers Combine Atmospheric Science with Heartland Farming Bookmark and Share Field studies use aircraft, satellite and ground-based sensors to examine effects of land use on regional climate This week, two major scientific field studies begin in Oklahoma to investigate major uncertainties in climate models-aerosols and clouds. Both campaigns are focused on fair weather clouds, but one is studying the influence of land surface changes, such as soil

  10. ARM - Feature Stories and Releases Article

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

    4, 2007 [Feature Stories and Releases] Climate Scientists Air Their Views in Oklahoma Bookmark and Share Media and distinguished guests are invited to talk with top U.S. climate scientists and view the research aircraft and field instrumentation that is critical to their studies. The scientists are in Oklahoma to conduct two studies focused on the interactions between clouds, aerosols and surface moisture, and their influence on regional climate. Oklahoma was chosen due to the desired cloud

  11. ARM - Feature Stories and Releases Article

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

    August 27, 2008 [Feature Stories and Releases] Argonne National Laboratory Wins Award for Ocean-Going Climate Observatory Bookmark and Share Mobile facility to provide key data about atmosphere/ocean interface for use in climate models. Contact: Lynne Roeder, ARM Public Information Officer, 509.372.4331 The U.S. Department of Energy's Office of Science has awarded Argonne National Laboratory a $2.6 million/year contract to design, build, and operate a mobile laboratory for obtaining cloud and

  12. ARM - Feature Stories and Releases Article

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

    8, 2009 [Facility News, Feature Stories and Releases] Thumbs-Up for Radar Design Reviews-Key Recovery Act Milestone Bookmark and Share Of the $60 million allocated to the ARM Climate Research Facility by the American Recovery and Reinvestment Act, nearly half that amount is designated for 18 new scanning radars as well as upgrades to the baseline ARM millimeter wave cloud radars (MMCR) located throughout the Facility. In November, ARM engineering staff led a series of preliminary design reviews

  13. ARM - Feature Stories and Releases Article

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

    10, 2009 [Facility News, Feature Stories and Releases] Highlights from DOE Scientific User Facility at AGU Fall Meeting 2009 Bookmark and Share Scientists from around the world use data from the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility to study the interactions between clouds, aerosol, and radiation. At this year's American Geophysical Union (AGU) Fall Meeting, scientists will present oral and poster sessions of their research using these data

  14. ARM - Feature Stories and Releases Article

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

    , 2010 [Feature Stories and Releases] Field Campaign Begins in Sacramento to Study Aging Aerosols Bookmark and Share Scientists will use measurements from the CARES campaign to examine how various gases and aerosol particles evolve and mix during the course of a day. Starting this week, dozens of researchers are on location in Sacramento for the Carbonaceous Aerosol and Radiative Effects Study, or CARES. Using a combination of more than 50 instruments at two ground sites and on two aircraft, the

  15. ARM - Feature Stories and Releases Article

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

    December 11, 2007 [Feature Stories and Releases] National User Facility Leads to Multidisciplinary Climate Research Bookmark and Share Contact: Lynne Roeder, ARM Public Information Officer, 509.372.4331 Onsite: Booth 328/330 ARM Climate Research Facility Sites Exhibit Showcases User Facility, Science, and Real-time Data Equipped with state-of-the-art instrumentation and data systems, the Department of Energy's ARM Climate Research Facility provides permanent research sites around the world for

  16. ARM - Feature Stories and Releases Article

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

    19, 2007 [Feature Stories and Releases] Marked Improvements Shown in Global Weather Forecast Model Bookmark and Share Contact: Lynne Roeder, ARM Public Information Officer, 509.372.4331 Example of an ECMWF analysis. One of the world's foremost weather forecast models is showing dramatic improvements thanks to the pairing of two recent advancements in the representation of radiative transfer in global weather and climate models. Developed with funding from the Atmospheric Radiation Measurement

  17. Structural features of dielectric oxide laser ceramics

    SciTech Connect (OSTI)

    Kaminskii, Alexandr A; Taranov, A V; Khazanov, E N; Akchurin, M Sh

    2012-10-31

    The relation between the transport characteristics of subterahertz thermal phonons and the structural features of singlephase dielectric crystalline laser ceramics based on cubic oxides synthesised in different technological regimes is studied. The effect of plastic deformation on the formation of the grain structure and intergrain layers (boundaries), as well as on the thermophysical, acoustic, optical, and laser characteristics of the materials is analysed. (active media)

  18. Volttron (TM) Security Features and Discussions

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

    TM : Security Features and Discussion BRANDON CARPENTER, BORA AKYOL Pacific Northwest National Laboratory Software Framework for Transactive Energy: VOLTTRON(tm), VTARI, Arlington, VA July 29, 2015 1 PNNL-SA-111786 VOLTTRON Team July 29, 2015 2 Software Development Team Bora Akyol Jereme Haack Brandon Carpenter Kyle Monson Craig Allwardt Poorva Sharma Tim Kang Robert Lutes Casey Neubauer Dan Johnson Application Development Team Srinivas Katipamula Robert Lutes Wooyun Kim Rick Pratt Carl Miller

  19. Category:Modern Geothermal Features | Open Energy Information

    Open Energy Info (EERE)

    Modern Geothermal Features Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Category:Modern Geothermal Features Geothermalpower.jpg Looking for the Modern Geothermal...

  20. ENGINEERED BARRIER SYSTEM FEATURES, EVENTS AND PROCESSES

    SciTech Connect (OSTI)

    Jaros, W.

    2005-08-30

    The purpose of this report is to evaluate and document the inclusion or exclusion of engineered barrier system (EBS) features, events, and processes (FEPs) with respect to models and analyses used to support the total system performance assessment for the license application (TSPA-LA). A screening decision, either Included or Excluded, is given for each FEP along with the technical basis for exclusion screening decisions. This information is required by the U.S. Nuclear Regulatory Commission (NRC) at 10 CFR 63.114 (d, e, and f) [DIRS 173273]. The FEPs addressed in this report deal with those features, events, and processes relevant to the EBS focusing mainly on those components and conditions exterior to the waste package and within the rock mass surrounding emplacement drifts. The components of the EBS are the drip shield, waste package, waste form, cladding, emplacement pallet, emplacement drift excavated opening (also referred to as drift opening in this report), and invert. FEPs specific to the waste package, cladding, and drip shield are addressed in separate FEP reports: for example, ''Screening of Features, Events, and Processes in Drip Shield and Waste Package Degradation'' (BSC 2005 [DIRS 174995]), ''Clad Degradation--FEPs Screening Arguments (BSC 2004 [DIRS 170019]), and Waste-Form Features, Events, and Processes'' (BSC 2004 [DIRS 170020]). For included FEPs, this report summarizes the implementation of the FEP in the TSPA-LA (i.e., how the FEP is included). For excluded FEPs, this analysis provides the technical basis for exclusion from TSPA-LA (i.e., why the FEP is excluded). This report also documents changes to the EBS FEPs list that have occurred since the previous versions of this report. These changes have resulted due to a reevaluation of the FEPs for TSPA-LA as identified in Section 1.2 of this report and described in more detail in Section 6.1.1. This revision addresses updates in Yucca Mountain Project (YMP) administrative procedures as they pertain to this report; the current procedures are addressed in Section 2. This revision also addresses updates to the technical basis in supporting analysis and model reports and corroborative documentation, as presented in Sections 4 and 6 of this report. Finally, Sections 4, 5, and 6 of this report provide additional information pertaining to the relevant FEPs-related Acceptance Criteria presented in ''Yucca Mountain Review Plan, Final Report'' (YMRP) (NRC 2003 [DIRS 163274], Sections 2.2.1.2.1.3 and 2.2.1.3.3.3).

  1. ARM - Feature Stories and Releases Article

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

    May 15, 2007 [Feature Stories and Releases] It's a Bird, It's a Plane, It's a...Helicopter? Bookmark and Share Duke University's "Jet Ranger" is one of eight aircraft that will fly over the SGP site in June. Last week, scientists from across the country met in Ponca City, Oklahoma, to simulate flight and mission planning scenarios in preparation for two simultaneous field campaigns that will occur in June at the ARM Climate Research Facility's Southern Great Plains (SGP) site. Their

  2. ARM - Feature Stories and Releases Article

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

    , 2011 [Feature Stories and Releases] AMIE, What You Wanna Do? Bookmark and Share Data spanning the Maldives to Papua New Guinea will help scientists analyze far-reaching tropical weather cycle This view shows a subset of the ARM Mobile Facility instruments operating at the Gan Island airport for the AMIE campaign. To see the complete collection, see the image set in Flickr. This view shows a subset of the ARM Mobile Facility instruments operating at the Gan Island airport for the AMIE campaign.

  3. ARM - Feature Stories and Releases Article

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

    8, 2011 [Feature Stories and Releases] The World's Largest Radar Laboratory Bookmark and Share New suite of scanning radars document life and death of clouds For Immediate Release: Thursday, December 8, 2011 Deployed in pairs, the new scanning cloud radars share a common pedestal and can scan 180 degrees in every direction. To see the radars in motion, view <a href='http://www.youtube.com/watch?v=137V1cczMt4\'>this video</a>. Deployed in pairs, the new scanning cloud radars share a

  4. ARM - Feature Stories and Releases Article

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

    8, 2012 [Feature Stories and Releases] AMIE Comes to an End on Manus and Gan Islands Bookmark and Share Data collected from the two island sites during AMIE indicate MJO events occurred every 30-40 days. Each system took about 10 days to build eastward from Gan to Manus. Three MJO events occurred during the campaign, with another system developing as the campaign came to a close. Data collected from the two island sites during AMIE indicate MJO events occurred every 30-40 days. Each system took

  5. ARM - Feature Stories and Releases Article

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

    7, 2012 [Feature Stories and Releases] Southern Great Plains Site in Path of Tornado Bookmark and Share Property of several SGP site personnel took a hit during the April 30 tornado. Site operations manager John Schatz shared this photo of damage to and around his barn. Property of several SGP site personnel took a hit during the April 30 tornado. Site operations manager John Schatz shared this photo of damage to and around his barn. On April 30, at about 10:30 p.m, a tornado touched down in

  6. ARM - Feature Stories and Releases Article

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

    3, 2013 [Facility News, Feature Stories and Releases] Cloud Cocktail Melts Greenland Ice Sheet Bookmark and Share Like the partygoer that just won't leave, low-level clouds hang around and cause temperatures to rise Not all clouds are created equal-especially in the Arctic. New research published in the journal Nature shows that low-level clouds in Greenland that contain just the right amount of water are thick enough to block heat from escaping to space, but thin enough to allow sunlight to

  7. ARM - Feature Stories and Releases Article

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

    June 20, 2013 [Feature Stories and Releases] Taking the Heat in the U.S. Great Plains Bookmark and Share When the National Weather Service released their predictions for the summer of 2013, it was difficult to miss the zone of warm colors centered over the U.S. Great Plains. Higher than average temperatures are expected in this part of the country. This comes as no surprise, especially after Oklahoma registered record-breaking heat last summer. Scientists have known for some time now that ground

  8. ARM - Feature Stories and Releases Article

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

    18, 2014 [Feature Stories and Releases] A New Species in the Amazon Rain Forest: Scientists Bookmark and Share Covering 5.5 million square kilometers, the sheer size of the Amazon rain forest has a strong impact on climate in the Southern Hemisphere and is a primary driver of global atmospheric circulation. Covering 5.5 million square kilometers, the sheer size of the Amazon rain forest has a strong impact on climate in the Southern Hemisphere and is a primary driver of global atmospheric

  9. ARM - Feature Stories and Releases Article

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

    9, 2014 [Facility News, Feature Stories and Releases] Sally McFarlane Named DOE ARM Program Manager Bookmark and Share Sally McFarlane rejoins the ARM team as the new DOE ARM Facility Program Manager, replacing Wanda Ferrell who retired June 30. Sally McFarlane rejoins the ARM team as the new DOE ARM Facility Program Manager, replacing Wanda Ferrell who retired June 30. On July 1, Dr. Sally McFarlane took a new role in the U.S. Department of Energy as the program manager for the Atmospheric

  10. ARM - Feature Stories and Releases Article

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

    August 27, 2014 [Facility News, Feature Stories and Releases] Heartfelt Goodbye to Manus Island Bookmark and Share Kim Nitschke opened with a thank you speech at the closeout dinner reception in Manus. Kim Nitschke opened with a thank you speech at the closeout dinner reception in Manus. After 18 years, the U.S. Department of Energy's ARM observation site at Manus Island is closed, but the data results will live on. Observations from Manus-freely available in the ARM Data Archive-will play a

  11. ARM - Feature Stories and Releases Article

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

    3, 2015 [Feature Stories and Releases] Land, Sea, and Air: ACAPEX Targets Atmospheric Rivers Bookmark and Share Researchers collect rare data linked to rain and drought From left to right: The G-IV, P-3, and G-1 aircraft at McClellan Airfield in Sacramento, California, prepare for a coordinated flight mission. Photo courtesy of Marty Ralph, Scripps Institution of Oceanography at University California, San Diego. From left to right: The G-IV, P-3, and G-1 aircraft at McClellan Airfield in

  12. ARM - Feature Stories and Releases Article

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

    June 8, 2015 [Facility News, Feature Stories and Releases] North to Alaska: Researchers Rush to Understand Warming Trend Bookmark and Share ARM-ACME V field campaign makes first science flight June 4 ARM-ACME V researchers are studying populations of liquid droplets and ice crystals in clouds such these seen above the arctic tundra at the ARM Facility at Oliktok Point. ARM-ACME V researchers are studying populations of liquid droplets and ice crystals in clouds such these seen above the arctic

  13. ARM - Feature Stories and Releases Article

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

    6, 2015 [Feature Stories and Releases] Up, Up, and Away! Bookmark and Share Using weather balloons to improve understanding of how surface conditions may impact clouds and rain Weather balloons, also called sondes, will be launched hourly from 6:30 am to 6:30 pm for 12 selected days between June 15 and August 31, 2015, to gather data to improve how weather and climate models predict the diurnal cycle of rainfall and cloud development. Weather balloons, also called sondes, will be launched hourly

  14. ARM - Feature Stories and Releases Article

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

    9, 2009 [Feature Stories and Releases] RACORO Campaign Comes to a Close Bookmark and Share The workhorse for the RACORO field campaign, the CIRPAS Twin Otter, comes in for a landing after completing a research flight. The workhorse for the RACORO field campaign, the CIRPAS Twin Otter, comes in for a landing after completing a research flight. "Wheels down." That's the term pilots use to log the end of their flight. After five months, the Routine AAF CLOWD Optical Radiative

  15. ARM - Feature Stories and Releases Article

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

    24, 2015 [Feature Stories and Releases] Partnerships Put the "Go" in the GoAmazon 2014/15 Campaign Bookmark and Share Support of Brazilian Partners is Indispensable in Making the Campaign Viable Capable of taking measurements as high as 23,000 feet, the ARM Aerial Facility G-1 aircraft contributed to what will be a data set like Capable of taking measurements as high as 23,000 feet, the ARM Aerial Facility G-1 aircraft contributed to what will be a data set like "no other,"

  16. ARM - Feature Stories and Releases Article

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

    October 5, 2015 [Feature Stories and Releases] Icy Arctic Proves Hot for Climate Data Bookmark and Share ARM-ACME V wraps-up field campaign in Alaska ARM-ACME V Principal Investigator Sébastien Biraud in the cabin of the G-1 aircraft next to the greenhouse-gas-monitoring instruments. Image courtesy of John Hubbe, AAF Payload Director. ARM-ACME V Principal Investigator Sébastien Biraud in the cabin of the G-1 aircraft next to the greenhouse-gas-monitoring instruments. Image courtesy of John

  17. ARM - Feature Stories and Releases Article

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

    December 7, 2015 [Feature Stories and Releases] MC3E: A Legacy of Learning Bookmark and Share Four years after the field research campaign ended, data are yielding the secrets of storms Storm clouds over the C-SAPR, a dual-polarization Doppler radar used in the June 2011 MC3E field campaign. Storm clouds over the C-SAPR, a dual-polarization Doppler radar used in the June 2011 MC3E field campaign. Large storm clouds influence the Earth's climate system by redistributing heat and moisture in the

  18. ARM - Feature Stories and Releases Article

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

    May 6, 2010 [Facility News, Feature Stories and Releases] Ceilometer Represents First Deployment of New Ground-based Instruments from Recovery Act Bookmark and Share After a 3-day period of side-by-side operations and acceptance testing, the new CL31 ceilometer (foreground) officially replaced the older CT25K model on April 16, 2010 at the SGP site. After a 3-day period of side-by-side operations and acceptance testing, the new CL31 ceilometer (foreground) officially replaced the older CT25K

  19. ARM - Feature Stories and Releases Article

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

    9, 2010 [Feature Stories and Releases] Mobile Facility Completes First Test at Sea Bookmark and Share Rich Coulter and Brad Orr, co-managers for the AMF2, install instruments on the bow of the RV Connecticut for operational testing in June. In mid-June, the second ARM Mobile Facility, or AMF2, faced its first test on the open seas off the coast of Cape Cod, Massachusetts. Led by Rich Coulter, AMF2 co-manager from Argonne National Laboratory, the AMF2 team installed a subset of AMF2 instruments

  20. ARM - Feature Stories and Releases Article

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

    24, 2010 [Feature Stories and Releases] CARES Campaign Comes to a Close in California Bookmark and Share Preparing for a coordinated research flight, the Gulfstream-1 and NASA King Air B-200 stay cool on the ramp, while immediately behind them, the NOAA Twin Otter taxis out to the runway. Photo courtesy of Rahul Zaveri. Preparing for a coordinated research flight, the Gulfstream-1 and NASA King Air B-200 stay cool on the ramp, while immediately behind them, the NOAA Twin Otter taxis out to the

  1. Latest Feature Video | The Ames Laboratory

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

    Latest Feature Video 2016 Middle School Science Bowl Check out video highlights of the 2016 Ames Laboratory Regional Middle School Science Bowl, held Feb. 20. Twenty-four teams from across the state competed in the event, with Ames Middle School winning the championship over LeMars and a trip to the U.S. Department of Energy's National Science Bowl, April 28-May 2 in Washington DC. Ames Laboratory hosts My Brother's Keeper event Ames Laboratory supports President Obama's My Brother's Keeper

  2. DVU Featured Training & Events Form

    Office of Environmental Management (EM)

    Featured Training & Events Form Please complete this form in its entirety and email to AskTheDvu@hq.doe.gov 1. Course Title: 2. Course Start/End Date: 3. Start/End Time (Time zone required): 4. Registration Link: Website Name and URL Link: 5. CHRIS Course Code & Session Number: If Applicable, Enter 6-Digit CHRIS Course Number 4-Digit CHRIS Session Number 6. Cost: 7. Course Type: (Ex: Live Webinar, Classroom, Online) 8. Course Location: Training Facility Address, Room # City & State

  3. Method of identifying features in indexed data

    DOE Patents [OSTI]

    Jarman, Kristin H. (Richland, WA) [Richland, WA; Daly, Don Simone (Richland, WA) [Richland, WA; Anderson, Kevin K. (Richland, WA) [Richland, WA; Wahl, Karen L. (Richland, WA) [Richland, WA

    2001-06-26

    The present invention is a method of identifying features in indexed data, especially useful for distinguishing signal from noise in data provided as a plurality of ordered pairs. Each of the plurality of ordered pairs has an index and a response. The method has the steps of: (a) providing an index window having a first window end located on a first index and extending across a plurality of indices to a second window end; (b) selecting responses corresponding to the plurality of indices within the index window and computing a measure of dispersion of the responses; and (c) comparing the measure of dispersion to a dispersion critical value. Advantages of the present invention include minimizing signal to noise ratio, signal drift, varying baseline signal and combinations thereof.

  4. Features, Events, and Processes: Disruptive Events

    SciTech Connect (OSTI)

    J. King

    2004-03-31

    The primary purpose of this analysis is to evaluate seismic- and igneous-related features, events, and processes (FEPs). These FEPs represent areas of natural system processes that have the potential to produce disruptive events (DE) that could impact repository performance and are related to the geologic processes of tectonism, structural deformation, seismicity, and igneous activity. Collectively, they are referred to as the DE FEPs. This evaluation determines which of the DE FEPs are excluded from modeling used to support the total system performance assessment for license application (TSPA-LA). The evaluation is based on the data and results presented in supporting analysis reports, model reports, technical information, or corroborative documents that are cited in the individual FEP discussions in Section 6.2 of this analysis report.

  5. Component with inspection-facilitating features

    DOE Patents [OSTI]

    Marra, John J; Zombo, Paul J

    2014-02-11

    A turbine airfoil can be formed with features to facilitate measurement of its wall thickness. An outer wall of the airfoil can include an outer surface and an inner surface. The outer surface of the airfoil can have an outer inspection target surface, and the inner surface of the airfoil can have an inner inspection target surface. The inner and outer target surfaces can define substantially flat regions in surfaces that are otherwise highly contoured. The inner and outer inspection target surfaces can be substantially aligned with each other. The inner and outer target surfaces can be substantially parallel to each other. As a result of these arrangements, a highly accurate measurement of wall thickness can be obtained. In one embodiment, the outer inspection target surface can be defined by an innermost surface of a groove formed in the outer surface of the outer wall of the airfoil.

  6. Richards Barrier LA Reference Design Feature Evaluation

    SciTech Connect (OSTI)

    N.E. Kramer

    1999-11-17

    The Richards Barrier is one of the design features of the repository to be considered for the License Application (LA), Richards was a soil scientist who first described the diversion of moisture between two materials with different hydrologic properties. In this report, a Richards Barrier is a special type of backfill with a fine-grained material (such as sand) overlaying a coarse-grained material (such as gravel). Water that enters an emplacement drift will first encounter the fine-grained material and be transported around the coarse-grained material covering the waste package, thus protecting the waste package from contact with most of the groundwater. The objective of this report is to discuss the benefits and liabilities to the repository by the inclusion of a Richards Barrier type backfill in emplacement drifts. The Richards Barrier can act as a barrier to water flow, can reduce the waste package material dissolution rate, limit mobilization of the radionuclides, and can provide structural protection for the waste package. The scope of this report is to: (1) Analyze the behavior of barrier materials following the intrusion of groundwater for influxes of 1 to 300 mm per year. The report will demonstrate diversion of groundwater intrusions into the barrier over an extended time period when seismic activity and consolidation may cause the potential for liquefaction and settlement of the Richards Barrier. (2) Review the thermal effects of the Richards Barrier on material behavior. (3) Analyze the effect of rockfall on the performance of the Richards Barrier and the depth of the barrier required to protect waste packages under the barrier. (4) Review radiological and heating conditions on placement of multiple layers of the barrier. Subsurface Nuclear Safety personnel will perform calculations to determine the radiation reduction-time relationship and shielding capacity of the barrier. (5) Evaluate the effects of ventilation on cooling of emplacement drifts and dusting potential. (6) Evaluate drift conditions and configurations to determine the suitability of Richards Barrier installation methodology. (7) Perform cost assessment of barrier material placement. (8) Evaluate the feature with criteria that will be supplied by the License Application Design Selection (LADS) Team. (9) Comment on the use of depleted uranium as a Richards Barrier material.

  7. Features, Events, and Processes: Disruptive Events

    SciTech Connect (OSTI)

    P. Sanchez

    2004-11-08

    The purpose of this analysis report is to evaluate and document the inclusion or exclusion of the disruptive events features, events, and processes (FEPs) with respect to modeling used to support the total system performance assessment for license application (TSPA-LA). A screening decision, either ''Included'' or ''Excluded,'' is given for each FEP, along with the technical basis for screening decisions. This information is required by the U.S. Nuclear Regulatory Commission (NRC) at 10 CFR 63.114 (d), (e), and (f) [DIRS 156605]. The FEPs addressed in this report deal with both seismic and igneous disruptive events, such as fault displacements through the repository and an igneous intrusion into the repository. For included FEPs, this analysis summarizes the implementation of the FEP in TSPA-LA (i.e., how the FEP is included). For excluded FEPs, this analysis provides the technical basis for exclusion from TSPA-LA (i.e., why the FEP is excluded). Previous versions of this report were developed to support the total system performance assessments (TSPA) for various prior repository designs. This revision addresses the repository design for the license application (LA).

  8. ARPA-E Announces 2012 Energy Innovation Summit Featuring Bill...

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

    Summit Featuring Bill Gates, Fred Smith and Lee Scott ARPA-E Announces 2012 Energy Innovation Summit Featuring Bill Gates, Fred Smith and Lee Scott September 9, 2011 - 9:25am ...

  9. Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations...

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

    Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop Music NEWPORT NEWS, Va., Feb. 2, 2010 - Jefferson Lab's Feb. 9 Science Series event will feature members...

  10. Physics Features of TRU-Fueled VHTRs

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

    Lewis, Tom G.; Tsvetkov, Pavel V.

    2009-01-01

    The current waste management strategy for spent nuclear fuel (SNF) mandated by the US Congress is the disposal of high-level waste (HLW) in a geological repository at Yucca Mountain. Ongoing efforts on closed-fuel cycle options and difficulties in opening and safeguarding such a repository have led to investigations of alternative waste management strategies. One potential strategy for the US fuel cycle would be to make use of fuel loadings containing high concentrations of transuranic (TRU) nuclides in the next-generation reactors. The use of such fuels would not only increase fuel supply but could also potentially facilitate prolonged operation modes (viamore » fertile additives) on a single fuel loading. The idea is to approach autonomous operation on a single fuel loading that would allow marketing power units as nuclear batteries for worldwide deployment. Studies have already shown that high-temperature gas-cooled reactors (HTGRs) and their Generation IV (GEN IV) extensions, very-high-temperature reactors (VHTRs), have encouraging performance characteristics. This paper is focused on possible physics features of TRU-fueled VHTRs. One of the objectives of a 3-year U.S. DOE NERI project was to show that TRU-fueled VHTRs have the possibility of prolonged operation on a single fuel loading. A 3D temperature distribution was developed based on conceivable operation conditions of the 600 MWth VHTR design. Results of extensive criticality and depletion calculations with varying fuel loadings showed that VHTRs are capable for autonomous operation and HLW waste reduction when loaded with TRU fuel.« less

  11. LSU EFRC - Center for Atomic Level Catalyst Design - Featured Videos

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

    Featured Videos >> space control Dr. James Spivey featured in ACS: Voices of Research space control Dr. Wayne Goodman's Research Group space control Group of Inorganic Chemistry and Catalysis space control Dr. Susan Sinnot's Research Group space control Nanomaterials and Nanofabrication Group space control space control Featured Videos space control space control Other Featured Videos space control Dr. Wayne Goodman's Research Group at Department of Chemistry, Texas A & M University

  12. Automation World Features New White Paper on Wireless Security | Department

    Energy Savers [EERE]

    of Energy Automation World Features New White Paper on Wireless Security Automation World Features New White Paper on Wireless Security The April 2009 issue of Automation World magazine features the white paper Wireless Systems Considerations When Implementing NERC Critical Infrastructure Protection Standards. PDF icon Automation World Features New White Paper on Wireless Security More Documents & Publications Wireless System Considerations When Implementing NERC Critical Infrastructure

  13. Nature Climate Change features Los Alamos forest research

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

    Nature Climate Change Features Forest Research Nature Climate Change features Los Alamos forest research The print issue features as its cover story the tree-stress research of LANL scientist A. Park Williams and partners from the U.S. Geological Survey, University of Arizona and several other organizations. February 27, 2013 Burned trees in the Jemez Mountains of New Mexico after the 2011 Las Conchas fire. Image by Craig D. Allen, USGS. Burned trees in the Jemez Mountains of New Mexico after

  14. Insider features Barton's ice boat | The Ames Laboratory

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

    Insider features Barton's ice boat Former Director Tom Barton had the cover story in Insider 25 years ago featuring his ice boat. In honor of Valentine's Day, the issue also carried an article, "Chemistry That Works" featuring couples who worked at the Lab. There was also a story on intreped peddlers who biked to work throughout the winter. To see the entire issue, click on the cover

  15. Technology Deployment Featured Case Studies | Department of Energy

    Energy Savers [EERE]

    Deployment » Technology Deployment Featured Case Studies Technology Deployment Featured Case Studies These case studies feature evaluations of energy-efficient technologies being used in federal applications. See additional technology deployment case studies. Photo of men working on a boiler. Boiler Combustion Control and Monitoring System: The Department of Defense Environmental Security Technology Certification Program tested a boiler combustion control and monitoring system installed on a 25

  16. Final Week of National Energy Action Month Features Technological Advances

    Office of Environmental Management (EM)

    in Clean Energy and DOE Support of Scientific Research | Department of Energy Final Week of National Energy Action Month Features Technological Advances in Clean Energy and DOE Support of Scientific Research Final Week of National Energy Action Month Features Technological Advances in Clean Energy and DOE Support of Scientific Research October 23, 2014 - 4:20pm Addthis News Media Contact 202-586-4940 Final Week of National Energy Action Month Features Technological Advances in Clean Energy

  17. Quick Links to Featured Reports | Department of Energy

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

    Quick Links to Featured Reports Quick Links to Featured Reports Quick Links to Featured Reports The Office of Electricity Delivery and Energy Reliability (OE) leads the Department of Energy's efforts to ensure a resilient, reliable, and flexible electricity system. OE accomplishes this mission through research, partnerships, facilitation, modeling and analytics, and emergency preparedness. Below is a sampling of the wide range of OE's reports, fact sheets, case studies, and other materials.

  18. CASR and personnel features highlight Insider | The Ames Laboratory

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

    carcinogens damage DNA. Forsling was featured for her second career as a musician and piano teacher. The issue also contained stories on Ames Laboratory holiday traditions and...

  19. PPPL featured as DOE celebrates turning 35 | Princeton Plasma...

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

    featured as DOE celebrates turning 35 October 5, 2012 Tweet Widget Google Plus One Share on Facebook 35 Years at the Department of Energy (Flickr Photostream)...

  20. Ultraviolet Thomson scattering measurements of the electron feature...

    Office of Scientific and Technical Information (OSTI)

    Ultraviolet Thomson scattering measurements of the electron feature with an energetic 263 nm probe Citation Details In-Document Search Title: Ultraviolet Thomson scattering...

  1. Changes in Surficial Features Associated with Geothermal Development...

    Open Energy Info (EERE)

    Changes in Surficial Features Associated with Geothermal Development in Long Valley Caldera, California, 1985-1997 Jump to: navigation, search OpenEI Reference LibraryAdd to...

  2. June 3, 2014 Webinar - Features, Events, and Processes: Practical...

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

    Events, and Processes: Practical Considerations for Development and Selection of Scenarios June 3, 2014 Webinar - Features, Events, and Processes: Practical Considerations for...

  3. PARC Seminar Series featuring Don Bryant | Photosynthetic Antenna...

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

    Don Bryant PARC Seminar Series featuring Don Bryant "Far-red light photoacclimation (FaRLiP) leads to extensive acclimative remodeling of photosynthetic apparatus in...

  4. Sandia Energy - Mark Boslough Featured in NOVA Special about...

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

    in NOVA Special about the Chelyabinsk Meteor Scientist Mark Boslough (Discrete Mathematics and Complex Systems Dept.) was featured in NOVA's special program "Meteor Strike,"...

  5. OE's SGIG Program Featured in International Publication | Department...

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

    OE's SGIG Program Featured in EnergyBiz Magazine Assistant Secretary Patricia Hoffman to Deliver Keynote Address at IEEE PES Conference on Innovative Smart Grid Technologies Now ...

  6. OE's SGIG Program Featured in EnergyBiz Magazine | Department...

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

    OE's SGIG Program Featured in International Publication Assistant Secretary Patricia Hoffman to Deliver Keynote Address at IEEE PES Conference on Innovative Smart Grid Technologies ...

  7. BEopt Version 2.0: New Features | Department of Energy

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

    BEopt Version 2.0: New Features BEopt Version 2.0: New Features This document outlines the new features and capabilities of BEopt Version 2.0, a software that provides capabilities to evaluate residential building designs and identify cost-optimal efficiency packages at various levels of whole-house energy savings along the path to zero net energy. PDF icon beopt_2-0_features.pdf More Documents & Publications Analysis: Targeting Zero Net Energy - 2014 BTO Peer Review Building America

  8. US Department of Energy Promotes Special Earth Week Feature on...

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

    Simple Steps Will Help Consumers Save Money -- and the Planet WASHINGTON, DC ... web feature giving them key energy saving tips and user-friendly information about ...

  9. PARC Seminar Series featuring David Tiede | Photosynthetic Antenna Research

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

    Center PARC Seminar Series featuring David Tiede PARC Seminar Series featuring David Tiede Wiring Photosynthetic and Redox Proteins for Solar Fuels Function April 21, 2015 - 11:00am Rodin Auditorium, Green Hall, Washington University View David's Bio Here Download our Flyer here Seminars

  10. PARC Seminar Series featuring Steven Boxer | Photosynthetic Antenna

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

    Research Center PARC Seminar Series featuring Steven Boxer PARC Seminar Series featuring Steven Boxer Vibrational Stark Spectroscopy Connects Electrostatics to Catalytic Rates at Enzyme Active Sites March 8, 2016 - 11:00am Brauer Hall 12, Washington University Event flyer Seminars

  11. Intrinsic feature-based pose measurement for imaging motion compensation

    DOE Patents [OSTI]

    Baba, Justin S.; Goddard, Jr., James Samuel

    2014-08-19

    Systems and methods for generating motion corrected tomographic images are provided. A method includes obtaining first images of a region of interest (ROI) to be imaged and associated with a first time, where the first images are associated with different positions and orientations with respect to the ROI. The method also includes defining an active region in the each of the first images and selecting intrinsic features in each of the first images based on the active region. Second, identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of second images of the ROI associated with a second time prior to the first time and computing three-dimensional (3D) coordinates for the portion of the intrinsic features. Finally, the method includes computing a relative pose for the first images based on the 3D coordinates.

  12. Aljazeera story on rare earths features Alex King | The Ames...

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

    Aljazeera story on rare earths features Alex King Aljazeera America recently did a story on the demand and scarcity of rare-earth metals and spoke to Ames Laboratory scientist and...

  13. PARC Seminar Series featuring Donald Ort | Photosynthetic Antenna Research

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

    Center Donald Ort PARC Seminar Series featuring Donald Ort Too Green? November 10, 2015 - 11:00am Brauer Hall 12, Washington University View our Flyer Here Donald Ort Bio View the Seminar

  14. The Role of Circulation Features on Black Carbon Transport into...

    Office of Scientific and Technical Information (OSTI)

    The Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5) Citation Details In-Document Search Title: The Role of ...

  15. Science in St. Louis featuring Dr. Ursula Goodenough | Photosynthetic...

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

    Ursula Goodenough Science in St. Louis featuring Dr. Ursula Goodenough Developing Algae As Producers of Jet Fuel November 15, 2014 - 10:30am Brauer Hall 012, Washington University...

  16. Discrete Feature Approach for Heterogeneous Reservoir Production Enhancement

    SciTech Connect (OSTI)

    Dershowitz, William S.; Curran, Brendan; Einstein, Herbert; LaPointe, Paul; Shuttle, Dawn; Klise, Kate

    2002-07-26

    The report presents summaries of technology development for discrete feature modeling in support of the improved oil recovery (IOR) for heterogeneous reservoirs. In addition, the report describes the demonstration of these technologies at project study sites.

  17. PNNL: PNNL In the News - PNNL 50th Anniversary Features

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

    50th Anniversary Features Prepared for the Tri-City Herald A closer look at climate September 2015 A closer look at climate This edition focuses on how PNNL's research is helping...

  18. PARC Seminar Series featuring Jan Jaworski | Photosynthetic Antenna...

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

    Jaworski PARC Seminar Series featuring Jan Jaworski Camelina as a model for oilseed biotechnology April 16, 2013 - 11:00am to 12:00pm Brauer 012, Washington University in St. Louis...

  19. Science in St. Louis featuring Dr. Daniel Giammar | Photosynthetic...

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

    Daniel Giammar Science in St. Louis featuring Dr. Daniel Giammar The Chemistry and Engineering for Producing and Supplying Clean Drinking Water November 22, 2014 - 10:30am Brauer...

  20. The Crystal Structure of Mouse Exo70 Reveals Unique Features...

    Office of Scientific and Technical Information (OSTI)

    Title: The Crystal Structure of Mouse Exo70 Reveals Unique Features of the Mammalian Exocyst Authors: Moore, Brian A. ; Robinson, Howard H. ; Xu, Zhaohui 1 ; Michigan-Med) 2 + ...

  1. Geothermal Heating and Cooling Systems Featured on NBC Nightly News

    Broader source: Energy.gov [DOE]

    NBC Nightly News recently featured a story on geothermal heating and cooling systems that are providing 30%-70% energy and cost savings for homeowners in Jordan, New York.

  2. Ultraviolet Thomson scattering measurements of the electron feature...

    Office of Scientific and Technical Information (OSTI)

    scattering measurements of the electron feature with an energetic 263 nm probe Authors: Ross, J S ; Divol, L ; Sorce, C ; Froula, D H ; Glenzer, S H Publication Date: 2011-06-23...

  3. NERSC Helps Physicists ID New Molecules With Unique Features

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

    NERSC Helps Physicists ID New Molecules With Unique Features NERSC Helps Physicists ID New Molecules With Unique Features Hollow magnetic cage molecules may have applications in technology, healthcare August 10, 2013 NERSC supercomputing resources helped Virginia Commonwealth University (VCU) researchers determine it may be possible to create large, hollow magnetic cage molecules that could be used in medicine as a drug delivery system to noninvasively treat tumors and in other emerging

  4. Feature-Based Statistical Analysis of Combustion Simulation Data

    SciTech Connect (OSTI)

    Bennett, J; Krishnamoorthy, V; Liu, S; Grout, R; Hawkes, E; Chen, J; Pascucci, V; Bremer, P T

    2011-11-18

    We present a new framework for feature-based statistical analysis of large-scale scientific data and demonstrate its effectiveness by analyzing features from Direct Numerical Simulations (DNS) of turbulent combustion. Turbulent flows are ubiquitous and account for transport and mixing processes in combustion, astrophysics, fusion, and climate modeling among other disciplines. They are also characterized by coherent structure or organized motion, i.e. nonlocal entities whose geometrical features can directly impact molecular mixing and reactive processes. While traditional multi-point statistics provide correlative information, they lack nonlocal structural information, and hence, fail to provide mechanistic causality information between organized fluid motion and mixing and reactive processes. Hence, it is of great interest to capture and track flow features and their statistics together with their correlation with relevant scalar quantities, e.g. temperature or species concentrations. In our approach we encode the set of all possible flow features by pre-computing merge trees augmented with attributes, such as statistical moments of various scalar fields, e.g. temperature, as well as length-scales computed via spectral analysis. The computation is performed in an efficient streaming manner in a pre-processing step and results in a collection of meta-data that is orders of magnitude smaller than the original simulation data. This meta-data is sufficient to support a fully flexible and interactive analysis of the features, allowing for arbitrary thresholds, providing per-feature statistics, and creating various global diagnostics such as Cumulative Density Functions (CDFs), histograms, or time-series. We combine the analysis with a rendering of the features in a linked-view browser that enables scientists to interactively explore, visualize, and analyze the equivalent of one terabyte of simulation data. We highlight the utility of this new framework for combustion science; however, it is applicable to many other science domains.

  5. Parade of Homes Display Features Energy-Saving Ideas

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

    Parade of Homes Display Features Energy-Saving Ideas For more information contact: George Douglas (303) 275-4096 e:mail: george_douglas@nrel.gov Golden, Colo., July 29, 1998 — The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory will showcase energy efficient and solar energy ideas for homebuyers and homebuilders during the Denver-area Parade of Homes. NREL's exhibit features information on energy-efficient lighting, building design, windows and insulation. The display

  6. Features of primary damage by high energy displacement cascades in

    Office of Scientific and Technical Information (OSTI)

    concentrated Ni-based alloys (Journal Article) | DOE PAGES Features of primary damage by high energy displacement cascades in concentrated Ni-based alloys This content will become publicly available on February 25, 2017 « Prev Next » Title: Features of primary damage by high energy displacement cascades in concentrated Ni-based alloys Alloying of Ni with Fe or Co reduces primary damage production under ion irradiation. Similar results have been obtained from classical molecular dynamics

  7. The effective field theory of inflation models with sharp features

    SciTech Connect (OSTI)

    Bartolo, Nicola; Cannone, Dario; Matarrese, Sabino E-mail: dario.cannone@pd.infn.it

    2013-10-01

    We describe models of single-field inflation with small and sharp step features in the potential (and sound speed) of the inflaton field, in the context of the Effective Field Theory of Inflation. This approach allows us to study the effects of features in the power-spectrum and in the bispectrum of curvature perturbations, from a model-independent point of view, by parametrizing the features directly with modified ''slow-roll'' parameters. We can obtain a self-consistent power-spectrum, together with enhanced non-Gaussianity, which grows with a quantity ? that parametrizes the sharpness of the step. With this treatment it is straightforward to generalize and include features in other coefficients of the effective action of the inflaton field fluctuations. Our conclusion in this case is that, excluding extrinsic curvature terms, the only interesting effects at the level of the bispectrum could arise from features in the first slow-roll parameter ? or in the speed of sound c{sub s}. Finally, we derive an upper bound on the parameter ? from the consistency of the perturbative expansion of the action for inflaton perturbations. This constraint can be used for an estimation of the signal-to-noise ratio, to show that the observable which is most sensitive to features is the power-spectrum. This conclusion would change if we consider the contemporary presence of a feature and a speed of sound c{sub s} < 1, as, in such a case, contributions from an oscillating folded configuration can potentially make the bispectrum the leading observable for feature models.

  8. Los Alamos technology to be featured on CSI: NY

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

    LANL technology featured on CSI: NY Los Alamos technology to be featured on CSI: NY The multipurpose "sampler gun" rapidly collects and tracks radiological, chemical, and biological samples in solid, liquid, or gaseous forms. March 27, 2008 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and

  9. 20th Century Reanalysis Project Featured in HPCWire Podcast

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

    20th Century 20th Century Reanalysis Project Featured in HPCWire Podcast March 11, 2014 earthreanalysis The 20th Century Reanalysis Project is generating a six-hourly, four-dimensional global atmospheric dataset spanning 1871 to 2011 to place current atmospheric circulation patterns into a historical perspective. Long-time NERSC user Dr. Gil Compo and the 20th Century Reanalysis project were featured March 10 in an HPCWire podcast, "Powering the 20th Century Weather Reanalysis

  10. Multi-tube fuel nozzle with mixing features

    DOE Patents [OSTI]

    Hughes, Michael John

    2014-04-22

    A system includes a multi-tube fuel nozzle having an inlet plate and a plurality of tubes adjacent the inlet plate. The inlet plate includes a plurality of apertures, and each aperture includes an inlet feature. Each tube of the plurality of tubes is coupled to an aperture of the plurality of apertures. The multi-tube fuel nozzle includes a differential configuration of inlet features among the plurality of tubes.

  11. Ultraviolet Thomson scattering measurements of the electron feature with an

    Office of Scientific and Technical Information (OSTI)

    energetic 263 nm probe (Journal Article) | SciTech Connect Journal Article: Ultraviolet Thomson scattering measurements of the electron feature with an energetic 263 nm probe Citation Details In-Document Search Title: Ultraviolet Thomson scattering measurements of the electron feature with an energetic 263 nm probe Authors: Ross, J S ; Divol, L ; Sorce, C ; Froula, D H ; Glenzer, S H Publication Date: 2011-06-23 OSTI Identifier: 1091881 Report Number(s): LLNL-JRNL-489959 DOE Contract Number:

  12. Sustainable Transportation and National Parks Initiative Featured in

    Energy Savers [EERE]

    Magazine | Department of Energy Sustainable Transportation and National Parks Initiative Featured in Magazine Sustainable Transportation and National Parks Initiative Featured in Magazine October 18, 2013 - 12:00am Addthis The latest issue of Continuum Magazine, which focuses on sustainable transportation, includes an article that spotlights the Clean Cities National Parks Initiative. This initiative supports the National Park Service's Green Parks Plan with transportation projects that

  13. This Month's Feature on .EDU Connections: Central Carolina Community

    Energy Savers [EERE]

    College | Department of Energy This Month's Feature on .EDU Connections: Central Carolina Community College This Month's Feature on .EDU Connections: Central Carolina Community College January 13, 2011 - 3:36pm Addthis Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs The work of students at Central Carolina Community College (CCCC) is powering the school -- literally. Students are constructing a testing plant to produce biofuels, which will fuel college vehicles and

  14. This Month's Feature on .EDUconnections: University of Wisconsin-Madison |

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

    Department of Energy This Month's Feature on .EDUconnections: University of Wisconsin-Madison This Month's Feature on .EDUconnections: University of Wisconsin-Madison April 15, 2011 - 3:10pm Addthis Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs This month, .EDUconnections, puts the spotlight on the University of Wisconsin. UW-Madison ranks as one of the most prolific research universities in the world, providing a learning environment where faculty, staff and

  15. Alaska Feature Articles and Blogs | Department of Energy

    Energy Savers [EERE]

    Alaska Feature Articles and Blogs Alaska Feature Articles and Blogs RSS March 10, 2016 Kodiak Island, Alaska. Photo by Andrew Petersen. Workshop Explores Energy Project Financing Options for Southwest Alaska Last week, the U.S. Department of Energy Office of Indian Energy hosted a Project Development and Finance workshop in conjunction with the Southwest Alaska Municipal Conference (SWAMC) Annual Economic Summit in Anchorage, Alaska. February 12, 2016 The Yukon River Inter-tribal Watershed

  16. Featured Publications from the Bats and Wind Energy Cooperative |

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

    Department of Energy Featured Publications from the Bats and Wind Energy Cooperative Featured Publications from the Bats and Wind Energy Cooperative Since its formation in 2003, the Bats and Wind Energy Cooperative (BWEC) has been engaged in numerous research activities funded by DOE's National Renewable Energy Laboratory, including studies assessing the impact of altering the cut-in-speed of wind turbines (the minimum wind speed at which wind turbines begin producing power), and the use of

  17. Feature-Based Measuring Advisor, Version 2.1

    Energy Science and Technology Software Center (OSTI)

    2002-07-22

    The purpose of Feature-Based Measuring Advisor (FBMeas Advisor) is a graphical user interface enabling users to more effectively interact with a solid model for measuring applications. Specifically, the FBMeas Advisor provides a user interface to the functions and capabilities of the FBMeas component technology. The FBMeas Advisor allows end users to visualize, organize, and document their measuring process plans and to facilitate the generation of a coordinate measuring machine part programs before a workpiece ismore » fabricated. The FBMeas Advisor permits the user to interact with an FBTol-enabled solid model to interactively and/or automatically create a set of measuring features (e.g., cylinders, planes, slots) that comply with national and international interface standards (i.e., DMIS (Dimensional Measuring Interface Standard, ISO 22063)). Measuring plans include defining measuring features interactively or automatically. Associating measuring features with appropriate tolerances and datum features via FBTol. Determining what measuring tasks (e.g., measure this feature to validate a size tolerance, measure this feature to establish a primary datum for a specific datum reference frame) are necessary to measure the feature. Assigning a measuring method to perform the task. For coordinate metrology measuring methods, measure points are determined interactively or automatically. Sensors and sensor configurations are defined, represented, and assigned to measuring methods. Measuring machines are defined, represented, and assigned to measure operations. Upon completion of a coordinate metrology measuring plan, FBMeas allows DMIS code segments to be generated, which can be used for DMIS-based CMM part programs.« less

  18. Chicago Business Features Argonne Woman in Nuclear Physics | Department of

    Office of Environmental Management (EM)

    Energy Chicago Business Features Argonne Woman in Nuclear Physics Chicago Business Features Argonne Woman in Nuclear Physics January 9, 2012 - 4:08pm Addthis Kawtar Hafidi is an experimental nuclear physicist, working in the medium energy physics group at Argonne. Image courtesy of Argonne National Laboratory. Kawtar Hafidi is an experimental nuclear physicist, working in the medium energy physics group at Argonne. Image courtesy of Argonne National Laboratory. Chicago Business has the scoop

  19. Volume Decomposition and Feature Recognition for Hexahedral Mesh Generation

    SciTech Connect (OSTI)

    GADH,RAJIT; LU,YONG; TAUTGES,TIMOTHY J.

    1999-09-27

    Considerable progress has been made on automatic hexahedral mesh generation in recent years. Several automatic meshing algorithms have proven to be very reliable on certain classes of geometry. While it is always worth pursuing general algorithms viable on more general geometry, a combination of the well-established algorithms is ready to take on classes of complicated geometry. By partitioning the entire geometry into meshable pieces matched with appropriate meshing algorithm the original geometry becomes meshable and may achieve better mesh quality. Each meshable portion is recognized as a meshing feature. This paper, which is a part of the feature based meshing methodology, presents the work on shape recognition and volume decomposition to automatically decompose a CAD model into meshable volumes. There are four phases in this approach: (1) Feature Determination to extinct decomposition features, (2) Cutting Surfaces Generation to form the ''tailored'' cutting surfaces, (3) Body Decomposition to get the imprinted volumes; and (4) Meshing Algorithm Assignment to match volumes decomposed with appropriate meshing algorithms. The feature determination procedure is based on the CLoop feature recognition algorithm that is extended to be more general. Results are demonstrated over several parts with complicated topology and geometry.

  20. Feature Based Machining Process Planning V5.1

    Energy Science and Technology Software Center (OSTI)

    2001-07-30

    The purpose of the FB-Machining Advisor product is to provide industry with an end user product that will enable end users to more effectively interact with a solid model for manufacturing applications. The product allows end users to visualize and organize their manufacturing process plans as they are being conceived; avoid redundant and time consuming geometric construction and calculation; automate geometric reasoning processes, and automate downstream manufacturing applications. The product augments a solid model representationmore » of the part with a set of machining features (e.g., pockets, steps, holes, cutouts). The product also enables end users to interact with a solid model to create process plans. It will automatically recognize, or interactively create and modify surface based machining features (represented by sets of faces on the solid model) and volumetric machining features which are represented by delta volumes (solid bodies representing volumes of material to be removed from the part). The FB-Machining Advisor will generate “in process shapes” that represent the shape of the work piece prior or subsequent to a material removal operation. It is designed to facilitate process change propagation in order to minimize rework resulting from process modifications. The machining features will provide vital shape and tolerance information (i.e. depth of pocket, minimum side radius of pocket, diameter of hole, maximum surface finish of side walls). The FB-Machining Advisor also integrates solid model based (3 Dimensional) tolerance information with the machining feature representations.« less

  1. Microscale Confinement features in microfluidic devices can affect biofilm

    SciTech Connect (OSTI)

    Kumar, Aloke; Karig, David K; Neethirajan, Suresh; Acharya, Rajesh K; Mukherjee, Partha P; Retterer, Scott T; Doktycz, Mitchel John

    2013-01-01

    Biofilms are aggregations of microbes that are encased by extra-cellular polymeric substances (EPS) and adhere to surfaces and interfaces. Biofilm development on abiotic surfaces is a dynamic process, which typically proceeds through an initial phase of adhesion of plankntonic microbes to the substrate, followed by events such as growth, maturation and EPS secretion. However, the coupling of hydrodynamics, microbial adhesion and biofilm growth remain poorly understood. Here, we investigate the effect of semiconfined features on biofilm formation. Using a microfluidic device and fluorescent time-lapse microscopy, we establish that confinement features can significantly affect biofilm formation. Biofilm dynamics change not only as a function of confinement features, but also of the total fluid flow rate, and our combination of experimental results and numerical simulations reveal insights into the link between hydrodynamics and biofilm formation.

  2. SOLAR MAGNETIC TRACKING. IV. THE DEATH OF MAGNETIC FEATURES

    SciTech Connect (OSTI)

    Lamb, D. A.; Howard, T. A.; DeForest, C. E.; Parnell, C. E.; Welsch, B. T.

    2013-09-10

    The removal of magnetic flux from the quiet-Sun photosphere is important for maintaining the statistical steady state of the magnetic field there, for determining the magnetic flux budget of the Sun, and for estimating the rate of energy injected into the upper solar atmosphere. Magnetic feature death is a measurable proxy for the removal of detectable flux, either by cancellation (submerging or rising loops, or reconnection in the photosphere) or by dispersal of flux. We used the SWAMIS feature tracking code to understand how nearly 2 Multiplication-Sign 10{sup 4} magnetic features die in an hour-long sequence of Hinode/SOT/NFI magnetograms of a region of the quiet Sun. Of the feature deaths that remove visible magnetic flux from the photosphere, the vast majority do so by a process that merely disperses the previously detected flux so that it is too small and too weak to be detected, rather than completely eliminating it. The behavior of the ensemble average of these dispersals is not consistent with a model of simple planar diffusion, suggesting that the dispersal is constrained by the evolving photospheric velocity field. We introduce the concept of the partial lifetime of magnetic features, and show that the partial lifetime due to Cancellation of magnetic flux, 22 hr, is three times slower than previous measurements of the flux turnover time. This indicates that prior feature-based estimates of the flux replacement time may be too short, in contrast with the tendency for this quantity to decrease as resolution and instrumentation have improved. This suggests that dispersal of flux to smaller scales is more important for the replacement of magnetic fields in the quiet Sun than observed bipolar cancellation. We conclude that processes on spatial scales smaller than those visible to Hinode dominate the processes of flux emergence and cancellation, and therefore also the quantity of magnetic flux that threads the photosphere.

  3. New Features of the Hopper XE6 - Differences from Franklin

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

    New Features of the Hopper XE6 New Features of the Hopper XE6 - Differences from Franklin While the Franklin and Hopper systems are both have similar programming environments and user software, there are some key architectural differences between the two systems. This page describes those differences and how they may improve your productivity. More Cores per Node and Multiple Sockets per Node Hopper has a total of 24 cores on each node. With more cores per node, you may want to explore adding

  4. Jefferson Lab's Spring 2007 Science Series features two lectures in

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

    February | Jefferson Lab 2007 Science Series features two lectures in February January 30, 2007 Jefferson Lab will host two Spring Science Series lectures during February 2007. The first event is set for Tuesday, February 20, and will feature David Powars, with the U.S. Geological Survey (USGS), discussing the Chesapeake Bay Impact Crater. He will share with the audience, recent research from a core hole more than a mile deep in the central zone of this 35.5-million-year-old impact crater

  5. This Month's Feature on .EDU Connections: Iowa State University |

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

    Department of Energy Iowa State University This Month's Feature on .EDU Connections: Iowa State University February 2, 2011 - 11:23am Addthis Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs Iowa State University's vision is to lead the world in advancing the land-grant ideas of putting science, technology and human creativity to work. Its mission is to create, share and apply knowledge to make Iowa and the world a better place. This month, ISU is being featured on

  6. ORNL Lightweighting Research Featured on MotorWeek

    ScienceCinema (OSTI)

    None

    2014-06-03

    PBS MotorWeek, television's longest running automotive series, featured ORNL lightweighting research for vehicle applications in an episode that aired in early April 2014. The crew captured footage of research including development of new metal alloys, additive manufacturing, carbon fiber production, advanced batteries, power electronics components, and neutron imaging applications for materials evaluation.

  7. PARC Seminar Series featuring Terry Bricker | Photosynthetic Antenna

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

    Research Center Terry Bricker PARC Seminar Series featuring Terry Bricker Structural Interactions of the Extrinsic Proteins in Higher Plant Photosystem II October 6, 2015 - 11:00am Brauer Hall 12, Washington University Terry Bricker Bio View the Seminar Online Here View Flyer

  8. ORNL Lightweighting Research Featured on MotorWeek

    SciTech Connect (OSTI)

    2014-04-15

    PBS MotorWeek, television's longest running automotive series, featured ORNL lightweighting research for vehicle applications in an episode that aired in early April 2014. The crew captured footage of research including development of new metal alloys, additive manufacturing, carbon fiber production, advanced batteries, power electronics components, and neutron imaging applications for materials evaluation.

  9. NASA features LLNL star-formation simulations | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration features LLNL star-formation simulations | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery Jobs

  10. Safety Functions and Other Features of Lethal Activated Denial Systems

    Energy Savers [EERE]

    STD-1193-2010 April 2010 DOE STANDARD Safety Functions and Other Features of Lethal Activated Denial Systems U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE DOE-STD-1193-2010 i TABLE OF CONTENTS FOREWORD ...................................................................................................................... ii 1. SCOPE AND PURPOSE

  11. Identification of features in indexed data and equipment therefore

    DOE Patents [OSTI]

    Jarman, Kristin H [Richland, WA; Daly, Don Simone [Richland, WA; Anderson, Kevin K [Richland, WA; Wahl, Karen L [Richland, WA

    2002-04-02

    Embodiments of the present invention provide methods of identifying a feature in an indexed dataset. Such embodiments encompass selecting an initial subset of indices, the initial subset of indices being encompassed by an initial window-of-interest and comprising at least one beginning index and at least one ending index; computing an intensity weighted measure of dispersion for the subset of indices using a subset of responses corresponding to the subset of indices; and comparing the intensity weighted measure of dispersion to a dispersion critical value determined from an expected value of the intensity weighted measure of dispersion under a null hypothesis of no transient feature present. Embodiments of the present invention also encompass equipment configured to perform the methods of the present invention.

  12. Biosensor method and system based on feature vector extraction

    DOE Patents [OSTI]

    Greenbaum, Elias (Knoxville, TN); Rodriguez, Jr., Miguel (Oak Ridge, TN); Qi, Hairong (Knoxville, TN); Wang, Xiaoling (San Jose, CA)

    2012-04-17

    A method of biosensor-based detection of toxins comprises the steps of providing at least one time-dependent control signal generated by a biosensor in a gas or liquid medium, and obtaining a time-dependent biosensor signal from the biosensor in the gas or liquid medium to be monitored or analyzed for the presence of one or more toxins selected from chemical, biological or radiological agents. The time-dependent biosensor signal is processed to obtain a plurality of feature vectors using at least one of amplitude statistics and a time-frequency analysis. At least one parameter relating to toxicity of the gas or liquid medium is then determined from the feature vectors based on reference to the control signal.

  13. Biosensor method and system based on feature vector extraction

    DOE Patents [OSTI]

    Greenbaum, Elias; Rodriguez, Jr., Miguel; Qi, Hairong; Wang, Xiaoling

    2013-07-02

    A system for biosensor-based detection of toxins includes providing at least one time-dependent control signal generated by a biosensor in a gas or liquid medium, and obtaining a time-dependent biosensor signal from the biosensor in the gas or liquid medium to be monitored or analyzed for the presence of one or more toxins selected from chemical, biological or radiological agents. The time-dependent biosensor signal is processed to obtain a plurality of feature vectors using at least one of amplitude statistics and a time-frequency analysis. At least one parameter relating to toxicity of the gas or liquid medium is then determined from the feature vectors based on reference to the control signal.

  14. Spatial feature tracking impedence sensor using multiple electric fields

    DOE Patents [OSTI]

    Novak, J.L.

    1998-08-11

    Linear and other features on a workpiece are tracked by measuring the fields generated between electrodes arrayed in pairs. One electrode in each pair operates as a transmitter and the other as a receiver, and both electrodes in a pair are arrayed on a carrier. By combining and subtracting fields between electrodes in one pair and between a transmitting electrode in one pair and a receiving electrode in another pair, information describing the location and orientation of the sensor relative to the workpiece in up to six degrees of freedom may be obtained. Typical applications will measure capacitance, but other impedance components may be measured as well. The sensor is designed to track a linear feature axis or a protrusion or pocket in a workpiece. Seams and ridges can be tracked by this non-contact sensor. The sensor output is useful for robotic applications. 10 figs.

  15. Spatial feature tracking impedence sensor using multiple electric fields

    DOE Patents [OSTI]

    Novak, James L. (Albuquerque, NM)

    1998-01-01

    Linear and other features on a workpiece are tracked by measuring the fields generated between electrodes arrayed in pairs. One electrode in each pair operates as a transmitter and the other as a receiver, and both electrodes in a pair are arrayed on a carrier. By combining and subtracting fields between electrodes in one pair and between a transmitting electrode in one pair and a receiving electrode in another pair, information describing the location and orientation of the sensor relative to the workpiece in up to six degrees of freedom may be obtained. Typical applications will measure capacitance, but other impedance components may be measured as well. The sensor is designed to track a linear feature axis or a protrusion or pocket in a workpiece. Seams and ridges can be tracked by this non-contact sensor. The sensor output is useful for robotic applications.

  16. Geographical features of global water cycle during warm geological epochs

    SciTech Connect (OSTI)

    Georgiadi, A.G.

    1996-12-31

    The impact of global warming on the water cycle can be extremely complex and diverse. The goal of the investigation was to estimate the geographic features of the mean annual water budget of the world during climatic optimums of the Holocene and the Eemian interglacial periods. These geological epochs could be used as analogs of climatic warming on 1 degree, centigrade and 2 degrees, centigrade. The author used the results of climatic reconstructions based on a simplified version of a GCM.

  17. NREL: Photovoltaics Research - Potential of Perovskite Solar Cells Featured

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

    in Solar Today Potential of Perovskite Solar Cells Featured in Solar Today February 11, 2016 Familiar with perovskite solar cells? If not, you'll probably hear more about them soon. Perovskites are a family of materials receiving considerable attention by solar cell researchers due to the rapid rise of solar conversion efficiencies, increasing from about 4% to almost 22% in just six years. In an interview published in Solar Today (winter 2015 edition), Dr. Jao van de Lagemaat, director of

  18. Startup Design Features for Supercritical Power Conversion Systems - Energy

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

    Innovation Portal Building Energy Efficiency Building Energy Efficiency Find More Like This Return to Search Startup Design Features for Supercritical Power Conversion Systems Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (738 KB) Technology Marketing SummarySandia National Laboratories has created solutions to startup flow issues in supercritical conversion systems. The Supercritical Brayton Cycle is a power conversion

  19. Special Feature: Energy - The Spark that Ignited DOE Supercomputing

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

    Energy - The Spark that Ignited DOE Supercomputing Special Feature: Energy - The Spark that Ignited DOE Supercomputing Scientific Computing for Energy Independence and a Clean Energy Future September 16, 2013 Contact: Linda Vu, lvu@lbl.gov, +1 510 495 2402 1280px-OREGONSODD-EVENPLANREDUCEDTHELINESATGASSTATIONSDURINGTHEFUELCRISISINTHEFALLANDWINTEROF1973-74....-NARA-555498.jpg Oregon's odd-even plan reduced the lines at gas stations during the fuel crisis in the fall and winter of 1973-74. This

  20. Sandia Video Featured by DOE Bioenergy Technologies Office

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

    Video Featured by DOE Bioenergy Technologies Office - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste

  1. Absorption Features in Spectra of Magnetized Neutron Stars

    SciTech Connect (OSTI)

    Suleimanov, V.; Hambaryan, V.; Neuhaeuser, R.; Potekhin, A. Y.; Pavlov, G. G.; Adelsberg, M. van; Werner, K.

    2011-09-21

    The X-ray spectra of some magnetized isolated neutron stars (NSs) show absorption features with equivalent widths (EWs) of 50-200 eV, whose nature is not yet well known.To explain the prominent absorption features in the soft X-ray spectra of the highly magnetized (B{approx}10{sup 14} G) X-ray dim isolated NSs (XDINSs), we theoretically investigate different NS local surface models, including naked condensed iron surfaces and partially ionized hydrogen model atmospheres, with semi-infinite and thin atmospheres above the condensed surface. We also developed a code for computing light curves and integral emergent spectra of magnetized neutron stars with various temperature and magnetic field distributions over the NS surface. We compare the general properties of the computed and observed light curves and integral spectra for XDINS RBS 1223 and conclude that the observations can be explained by a thin hydrogen atmosphere above the condensed iron surface, while the presence of a strong toroidal magnetic field component on the XDINS surface is unlikely.We suggest that the harmonically spaced absorption features in the soft X-ray spectrum of the central compact object (CCO) 1E 1207.4-5209 (hereafter 1E 1207) correspond to peaks in the energy dependence of the free-free opacity in a quantizing magnetic field, known as quantum oscillations. To explore observable properties of these quantum oscillations, we calculate models of hydrogen NS atmospheres with B{approx}10{sup 10}-10{sup 11} G(i.e., electron cyclotron energy E{sub c,e}{approx}0.1-1 keV) and T{sub eff} = 1-3 MK. Such conditions are thought to be typical for 1E 1207. We show that observable features at the electron cyclotron harmonics with EWs {approx_equal}100-200 eV can arise due to these quantum oscillations.

  2. Sandia Research Featured on Journal of Physical Chemistry A Cover

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

    Featured on Journal of Physical Chemistry A Cover - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste

  3. Potential of Perovskite Solar Cells Featured in Solar Today | Community |

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

    NREL Potential of Perovskite Solar Cells Featured in Solar Today February 11, 2016 Familiar with perovskite solar cells? If not, you'll probably hear more about them soon. Perovskites are a family of materials receiving considerable attention by solar cell researchers due to the rapid rise of solar conversion efficiencies, increasing from about 4% to almost 22% in just six years. In an interview published in Solar Today (winter 2015 edition), Dr. Jao van de Lagemaat, director of the

  4. ITP Nanomanufacturing: Manufacturing of Surfaces with Nanoscale and Microscale Features

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

    of Surfaces with Nanoscale and Microscale Features Enhanced Boiling, Condensation, and Water Repellency through the Fabrication of Structured Surfaces In nature, extremely hydrophobic surfaces such as the lotus plant leaf are called superhydrophobic (SHP). These surfaces appear to be macroscopically smooth, but are actually composed of nano- and micro-structured surfaces, the key to their SHP prop- erties. The industrial production of SHP surfaces, which are not yet available commercially, would

  5. Village Power Exhibit Featured at NREL's Visitors Center

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

    Village Power Exhibit Featured at NREL's Visitors Center "Powering Our Lives, Powering Our World Energy" Expo Slated for February-April For more information contact: Gary Schmitz, 303-275-4050 email: Gary Schmitz Golden, Colo., Feb. 16, 2001 - An exhibit that demonstrates how renewable energy sources can bring needed electricity to developing nations worldwide opens Feb. 20 at the Visitors Center of the U.S. Department of Energy's National Renewable Energy Laboratory. The Village Power

  6. Identifying Transition State Features of Enzymatic Conformational Cycles |

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

    Stanford Synchrotron Radiation Lightsource Identifying Transition State Features of Enzymatic Conformational Cycles Thursday, January 5, 2012 - 11:00am SSRL Conference Room 137-322 Dr. Dimitar Pachov, HHMI Research Associate, Kern's Group, Brandeis University, MA Due to their dynamic nature relevant to biological activity, biomolecules frequently interconvert between functional substates. Determining how these visits to different conformational states are physically characterized remains a

  7. JBEI Featured in Chemical & Engineering News Cover Article

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

    Featured in Chemical & Engineering News Cover Article - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense

  8. NREL Earth Day Celebration Features Energy Activities, Tours

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

    Features Energy Activities, Tours For more information contact: e:mail: Public Affairs Golden, Colo., April 12, 1999 — Celebrate Earth Day by discovering the power of clean energy at the nation's premier laboratory for renewable energy and energy efficiency research, development and deployment. The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) will open its doors 10 a.m. to 3 p.m., April 24 for tours of its research facilities and interactive exhibits at the Visitors

  9. Intrinsic Feature-Based Pose Measurement for Medical Imaging Motion

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

    Compensation - Energy Innovation Portal Find More Like This Return to Search Intrinsic Feature-Based Pose Measurement for Medical Imaging Motion Compensation Oak Ridge National Laboratory Contact ORNL About This Technology Publications: PDF Document Publication 11-G00260_ID2341.pdf (497 KB) Technology Marketing SummaryTomographic imaging of awake, unrestrained animals or humans during a scan can result in blurring and unusable 3D images due to movement by the subject. This invention

  10. Jefferson Lab announces two Fall Science Series events -- featuring magic

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

    and football | Jefferson Lab events - featuring magic and football October 4, 2005 Using humor, stagecraft and lighting, along with laboratory experiments disguised as magical illusion, the audience will view science from a perspective most have never seen before with Bob Friedhoffer, author, scientist and magician. He will conduct "Einstein and Beyond - The Magic Show" on Tuesday, Oct. 25 at the Jefferson Lab CEBAF Center auditorium. The magic show will concentrate on Newtonian

  11. DOE Science Showcase - Featured Climate Change Research from DOE Databases

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

    | OSTI, US Dept of Energy, Office of Scientific and Technical Information Featured Climate Change Research from DOE Databases Search Results from DOE Databases View research documents, citations, accomplishments, patents, and projects related to climate change, one of the primary scientific challenges addressed through the Incite Program. Climate Change Information Bridge Energy Citations Database DOE R&D Accomplishments Database DOE Data Explorer Climate Modeling Information Bridge

  12. NREL: Solar Research - Potential of Perovskite Solar Cells Featured in

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

    Solar Today Potential of Perovskite Solar Cells Featured in Solar Today February 11, 2016 Familiar with perovskite solar cells? If not, you'll probably hear more about them soon. Perovskites are a family of materials receiving considerable attention by solar cell researchers due to the rapid rise of solar conversion efficiencies, increasing from about 4% to almost 22% in just six years. In an interview published in Solar Today (winter 2015 edition), Dr. Jao van de Lagemaat, director of the

  13. An Ontology Design Pattern for Surface Water Features

    SciTech Connect (OSTI)

    Sinha, Gaurav; Mark, David; Kolas, Dave; Varanka, Dalia; Romero, Boleslo E; Feng, Chen-Chieh; Usery, Lynn; Liebermann, Joshua; Sorokine, Alexandre

    2014-01-01

    Surface water is a primary concept of human experience but concepts are captured in cultures and languages in many different ways. Still, many commonalities can be found due to the physical basis of many of the properties and categories. An abstract ontology of surface water features based only on those physical properties of landscape features has the best potential for serving as a foundational domain ontology. It can then be used to systematically incor-porate concepts that are specific to a culture, language, or scientific domain. The Surface Water ontology design pattern was developed both for domain knowledge distillation and to serve as a conceptual building-block for more complex surface water ontologies. A fundamental distinction is made in this on-tology between landscape features that act as containers (e.g., stream channels, basins) and the bodies of water (e.g., rivers, lakes) that occupy those containers. Concave (container) landforms semantics are specified in a Dry module and the semantics of contained bodies of water in a Wet module. The pattern is imple-mented in OWL, but Description Logic axioms and a detailed explanation is provided. The OWL ontology will be an important contribution to Semantic Web vocabulary for annotating surface water feature datasets. A discussion about why there is a need to complement the pattern with other ontologies, es-pecially the previously developed Surface Network pattern is also provided. Fi-nally, the practical value of the pattern in semantic querying of surface water datasets is illustrated through a few queries and annotated geospatial datasets.

  14. Features of an Atkinson two-stroke engine

    SciTech Connect (OSTI)

    Brooks, J.; Lane, A.

    1994-09-01

    A two-stroke Atkinson cycle engine is described. The engine has uniflow stratified mixture scavenging with a variably phased spherical rotary valve in the cylinder head and exhaust ports in the cylinder wall. These features combined in this configuration result in reduced fuel consumption, higher specific power output, less vibration, and smooth part load operation albeit increased size and cost compared to simple two-stroke engines used in power tools. 29 refs., 4 figs., 1 tab.

  15. Volttron TM 3.0 Technical Overview and Features

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

    4 VOLTTRON(tm) 3.0 Technical Overview and Features BRANDON CARPENTER Pacific Northwest National Laboratory Software Framework for Transactive Energy: VOLTTRON(tm), VTARI, Arlington, VA July 29, 2015 1 VOLTTRON Team July 29, 2015 2 Software Development Team Bora Akyol Jereme Haack Brandon Carpenter Kyle Monson Craig Allwardt Poorva Sharma Tim Kang Robert Lutes Casey Neubauer Dan Johnson Application Development Team Srinivas Katipamula Robert Lutes Wooyun Kim Rick Pratt Carl Miller Weimin Wang

  16. NREL: A Year in Clean Energy Innovations; A Review of NREL's 2011 Feature Stories

    SciTech Connect (OSTI)

    Not Available

    2012-04-01

    This document is a compilation of articles featuring NREL research and development, deployment, commercialization, and outreach activities in 2011. The feature stories can be found online at http:www.nrel.gov/features/.

  17. Deep PDF parsing to extract features for detecting embedded malware.

    SciTech Connect (OSTI)

    Munson, Miles Arthur; Cross, Jesse S.

    2011-09-01

    The number of PDF files with embedded malicious code has risen significantly in the past few years. This is due to the portability of the file format, the ways Adobe Reader recovers from corrupt PDF files, the addition of many multimedia and scripting extensions to the file format, and many format properties the malware author may use to disguise the presence of malware. Current research focuses on executable, MS Office, and HTML formats. In this paper, several features and properties of PDF Files are identified. Features are extracted using an instrumented open source PDF viewer. The feature descriptions of benign and malicious PDFs can be used to construct a machine learning model for detecting possible malware in future PDF files. The detection rate of PDF malware by current antivirus software is very low. A PDF file is easy to edit and manipulate because it is a text format, providing a low barrier to malware authors. Analyzing PDF files for malware is nonetheless difficult because of (a) the complexity of the formatting language, (b) the parsing idiosyncrasies in Adobe Reader, and (c) undocumented correction techniques employed in Adobe Reader. In May 2011, Esparza demonstrated that PDF malware could be hidden from 42 of 43 antivirus packages by combining multiple obfuscation techniques [4]. One reason current antivirus software fails is the ease of varying byte sequences in PDF malware, thereby rendering conventional signature-based virus detection useless. The compression and encryption functions produce sequences of bytes that are each functions of multiple input bytes. As a result, padding the malware payload with some whitespace before compression/encryption can change many of the bytes in the final payload. In this study we analyzed a corpus of 2591 benign and 87 malicious PDF files. While this corpus is admittedly small, it allowed us to test a system for collecting indicators of embedded PDF malware. We will call these indicators features throughout the rest of this report. The features are extracted using an instrumented PDF viewer, and are the inputs to a prediction model that scores the likelihood of a PDF file containing malware. The prediction model is constructed from a sample of labeled data by a machine learning algorithm (specifically, decision tree ensemble learning). Preliminary experiments show that the model is able to detect half of the PDF malware in the corpus with zero false alarms. We conclude the report with suggestions for extending this work to detect a greater variety of PDF malware.

  18. Special Feature: Reducing Energy Costs with Better Batteries

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

    Reducing Energy Costs with Better Batteries Special Feature: Reducing Energy Costs with Better Batteries September 9, 2013 Contact: Linda Vu, +1 510 495 2402, lvu@lbl.gov Electricvehicles8331019248.jpg Electric vehicles lined up in Cascade Locks. Credit: Oregon Department of Transportation A better battery-one that is cheap and safe, but packs a lot of power-could lead to an electric vehicle that performs better than today's gasoline-powered cars, and costs about the same or less to consumers.

  19. Photovoltaic building sheathing element with anti-slide features

    DOE Patents [OSTI]

    Keenihan, James R.; Langmaid, Joseph A.; Lopez, Leonardo C.

    2015-09-08

    The present invention is premised` upon an assembly that includes at least a photovoltaic building sheathing element capable of being affixed on a building structure, the photovoltaic building sheathing element. The element including a photovoltaic cell assembly, a body portion attached to one or more portions of the photovoltaic cell assembly; and at feast a first and a second connector assembly capable of directly or indirectly electrically connecting the photovoltaic cell assembly to one or more adjoining devices; wherein the body portion includes one or more geometric features adapted to engage a vertically adjoining device before installation.

  20. 5f Magnetism--Specific Features And Boundaries

    SciTech Connect (OSTI)

    Havela, Ladislav; Maskova, Silvie; Adamska, Anna; Pesicka, J.; Andreev, Alexander V.; Shick, Alexander; Gouder, Thomas; Kim-Ngan, N.-H.; Balogh, Adam G.

    2011-06-30

    Magnetism of light actinides exhibits fascinating and potentially useful features. One of them is a giant anisotropy of the two-ion type, apparent mostly in U-based systems. Here we demonstrate on the example of U{sub 2}Ni{sub 2}Sn and its hydride the anisotropy switches over the direction of U moments on a very fine scale. The study of amorphous sputter deposited UFe{sub x} films reveals how the Curie temperature can be tuned so as to exceed the room temperature.

  1. THE THOMSON SURFACE. III. TRACKING FEATURES IN 3D

    SciTech Connect (OSTI)

    Howard, T. A.; DeForest, C. E.; Tappin, S. J.; Odstrcil, D.

    2013-03-01

    In this, the final installment in a three-part series on the Thomson surface, we present simulated observations of coronal mass ejections (CMEs) observed by a hypothetical polarizing white light heliospheric imager. Thomson scattering yields a polarization signal that can be exploited to locate observed features in three dimensions relative to the Thomson surface. We consider how the appearance of the CME changes with the direction of trajectory, using simulations of a simple geometrical shape and also of a more realistic CME generated using the ENLIL model. We compare the appearance in both unpolarized B and polarized pB light, and show that there is a quantifiable difference in the measured brightness of a CME between unpolarized and polarized observations. We demonstrate a technique for using this difference to extract the three-dimensional (3D) trajectory of large objects such as CMEs. We conclude with a discussion on how a polarizing heliospheric imager could be used to extract 3D trajectory information about CMEs or other observed features.

  2. New Regenerative Cycle for Vapor Compression Refrigeration

    SciTech Connect (OSTI)

    Bergander, Mark J [Magnetic Development, Inc.; Butrymowicz, Dariusz [Polish Academy of Scinces

    2010-01-26

    This project was a continuation of Category 1 project, completed in August 2005. Following the successful bench model demonstration of the technical feasibility and economic viability, the main objective in this stage was to fabricate the prototype of the heat pump, working on the new thermodynamic cycle. This required further research to increase the system efficiency to the level consistent with theoretical analysis of the cycle. Another group of objectives was to provide the foundation for commercialization and included documentation of the manufacturing process, preparing the business plan, organizing sales network and raising the private capital necessary to acquire production facilities.

  3. dry-regen | netl.doe.gov

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

    No.: FC26-07NT43089 Schematic of RTI's Dry Carbonate Process (click image to enlarge) Research Triangle Institute (RTI) International completed two projects, NT43089 and...

  4. Project Profile: Regenerative Carbonate-Based Thermochemical...

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

    Innovation SRI Webpage pic The proposed TCES system is based on the ability of advanced sorbent materials to repeatedly undergo endothermic-exothermic gas-solid reaction cycles ...

  5. Microsoft Word - Sec 136 TSD final.doc

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

    Van Passenger Van < 8500 lbs Minivan Minivan < 8500 lbs Cargo Van Cargo Van < 8500 lbs Sports Utility Sport Utility Vehicle < 8500 lbs Special Purpose Not Used *For cars...

  6. FEATURES, EVENTS, AND PROCESSES: SYSTEM-LEVEL AND CRITICALITY

    SciTech Connect (OSTI)

    D.L. McGregor

    2000-12-20

    The primary purpose of this Analysis/Model Report (AMR) is to identify and document the screening analyses for the features, events, and processes (FEPs) that do not easily fit into the existing Process Model Report (PMR) structure. These FEPs include the 3 1 FEPs designated as System-Level Primary FEPs and the 22 FEPs designated as Criticality Primary FEPs. A list of these FEPs is provided in Section 1.1. This AMR (AN-WIS-MD-000019) documents the Screening Decision and Regulatory Basis, Screening Argument, and Total System Performance Assessment (TSPA) Disposition for each of the subject Primary FEPs. This AMR provides screening information and decisions for the TSPA-SR report and provides the same information for incorporation into a project-specific FEPs database. This AMR may also assist reviewers during the licensing-review process.

  7. Features, Events and Processes in UZ Flow and Transport

    SciTech Connect (OSTI)

    P. Persoff

    2005-08-04

    The purpose of this report is to evaluate and document the inclusion or exclusion of the unsaturated zone (UZ) features, events, and processes (FEPs) with respect to modeling that supports the total system performance assessment (TSPA) for license application (LA) for a nuclear waste repository at Yucca Mountain, Nevada. A screening decision, either Included or Excluded, is given for each FEP, along with the technical basis for the screening decision. This information is required by the U.S. Nuclear Regulatory Commission (NRC) in 10 CFR 63.114 (d, e, and f) [DIRS 173273]. The FEPs deal with UZ flow and radionuclide transport, including climate, surface water infiltration, percolation, drift seepage, and thermally coupled processes. This analysis summarizes the implementation of each FEP in TSPA-LA (that is, how the FEP is included) and also provides the technical basis for exclusion from TSPA-LA (that is, why the FEP is excluded). This report supports TSPA-LA.

  8. Features, Events, and Processes in UZ and Transport

    SciTech Connect (OSTI)

    P. Persoff

    2004-11-06

    The purpose of this report is to evaluate and document the inclusion or exclusion of the unsaturated zone (UZ) features, events, and processes (FEPs) with respect to modeling that supports the total system performance assessment (TSPA) for license application (LA) for a nuclear waste repository at Yucca Mountain, Nevada. A screening decision, either ''Included'' or ''Excluded'', is given for each FEP, along with the technical basis for the screening decision. This information is required by the U.S. Nuclear Regulatory Commission (NRC) in 10 CFR 63.114 (d, e, and f) [DIRS 156605]. The FEPs deal with UZ flow and radionuclide transport, including climate, surface water infiltration, percolation, drift seepage, and thermally coupled processes. This analysis summarizes the implementation of each FEP in TSPA-LA (that is, how the FEP is included) and also provides the technical basis for exclusion from TSPA-LA (that is, why the FEP is excluded). This report supports TSPA-LA.

  9. Non-contact feature detection using ultrasonic Lamb waves

    DOE Patents [OSTI]

    Sinha, Dipen N.

    2011-06-28

    Apparatus and method for non-contact ultrasonic detection of features on or within the walls of hollow pipes are described. An air-coupled, high-power ultrasonic transducer for generating guided waves in the pipe wall, and a high-sensitivity, air-coupled transducer for detecting these waves, are disposed at a distance apart and at chosen angle with respect to the surface of the pipe, either inside of or outside of the pipe. Measurements may be made in reflection or transmission modes depending on the relative position of the transducers and the pipe. Data are taken by sweeping the frequency of the incident ultrasonic waves, using a tracking narrow-band filter to reduce detected noise, and transforming the frequency domain data into the time domain using fast Fourier transformation, if required.

  10. Centrifugal Casting Features/Metallurgical Characterization of Aluminum Alloys

    SciTech Connect (OSTI)

    Chirita, G.; Soares, D.; Cruz, D.; Silva, F. S. [Mechanical Engineering Department, School of Engineering, Minho University (Portugal); Stefanescu, I. [Faculty of Mechanical Engineering, Dunarea de Jos University Galati (Romania)

    2008-02-15

    This paper deals with the study of centrifugal effects on aluminium castings under high G values. Most of the studies in this domain (FGMs obtained by centrifugal casting) deal with functionally graded composites reinforced with a solid phase such as silicon particles or others. However, in this study it will be shown that unreinforced aluminium alloys may be significantly influenced by the centrifugal effect and that functionally graded castings are also obtained. It has been observed that the centrifugal effect may increase in some alloys, depending on the relative position in the castings, the rupture strength by approx. 50%, and rupture strain by about 300%, as compared to the gravity casting technique. The Young's modulus may also increase by about 20%. It has also been reported that in vertical centrifugal castings there are mainly three aspects that affect the components thus obtained, namely: fluid dynamics; vibration (inherent to the system); and centrifugal force. These features have a different effect on the castings depending on the aluminium alloy. In this paper, an analysis of the most important effects of the centrifugal casting process on metallurgical features is conducted. A solidification characterization at several points along the mould will be made in order to have an accurate idea of both the fluid dynamics inside the mould during the casting and the solidification behavior in different parts of the component. These two analyses will be related to the metallurgical properties (phase distribution; SDAS; eutectic silicon content and shape, pores density and shape) along the component and mainly along the direction of the centrifugal pressure. A comparison between castings obtained by both centrifugal casting technique and gravity casting technique is made for reference (gravity casting)

  11. Automated feature detection and identification in digital point-ordered signals

    DOE Patents [OSTI]

    Oppenlander, Jane E. (Burnt Hills, NY); Loomis, Kent C. (Clifton Park, NY); Brudnoy, David M. (Albany, NY); Levy, Arthur J. (Schenectady, NY)

    1998-01-01

    A computer-based automated method to detect and identify features in digital point-ordered signals. The method is used for processing of non-destructive test signals, such as eddy current signals obtained from calibration standards. The signals are first automatically processed to remove noise and to determine a baseline. Next, features are detected in the signals using mathematical morphology filters. Finally, verification of the features is made using an expert system of pattern recognition methods and geometric criteria. The method has the advantage that standard features can be, located without prior knowledge of the number or sequence of the features. Further advantages are that standard features can be differentiated from irrelevant signal features such as noise, and detected features are automatically verified by parameters extracted from the signals. The method proceeds fully automatically without initial operator set-up and without subjective operator feature judgement.

  12. Feature Detection, Characterization and Confirmation Methodology: Final Report

    SciTech Connect (OSTI)

    Karasaki, Kenzi; Apps, John; Doughty, Christine; Gwatney, Hope; Onishi, Celia Tiemi; Trautz, Robert; Tsang, Chin-Fu

    2007-03-01

    This is the final report of the NUMO-LBNL collaborative project: Feature Detection, Characterization and Confirmation Methodology under NUMO-DOE/LBNL collaboration agreement, the task description of which can be found in the Appendix. We examine site characterization projects from several sites in the world. The list includes Yucca Mountain in the USA, Tono and Horonobe in Japan, AECL in Canada, sites in Sweden, and Olkiluoto in Finland. We identify important geologic features and parameters common to most (or all) sites to provide useful information for future repository siting activity. At first glance, one could question whether there was any commonality among the sites, which are in different rock types at different locations. For example, the planned Yucca Mountain site is a dry repository in unsaturated tuff, whereas the Swedish sites are situated in saturated granite. However, the study concludes that indeed there are a number of important common features and parameters among all the sites--namely, (1) fault properties, (2) fracture-matrix interaction (3) groundwater flux, (4) boundary conditions, and (5) the permeability and porosity of the materials. We list the lessons learned from the Yucca Mountain Project and other site characterization programs. Most programs have by and large been quite successful. Nonetheless, there are definitely 'should-haves' and 'could-haves', or lessons to be learned, in all these programs. Although each site characterization program has some unique aspects, we believe that these crosscutting lessons can be very useful for future site investigations to be conducted in Japan. One of the most common lessons learned is that a repository program should allow for flexibility, in both schedule and approach. We examine field investigation technologies used to collect site characterization data in the field. An extensive list of existing field technologies is presented, with some discussion on usage and limitations. Many of the technologies on the list were in fact used during the characterization of Yucca Mountain and elsewhere by LBNL personnel. The study also includes emerging technologies and identifies the need to develop better estimation of important parameters for repository siting. Notable emerging technologies include 3-D seismic and satellite-based remote sensing and wireless micro electro mechanical systems (MEMS) sensors. They enable cost-effective and ubiquitous monitoring to be applied for site characterization. We list and classify the types of uncertainties involved in site characterization. Uncertainties can exist in all aspects of site characterization: data, interpretation, conceptualization, and modeling. We use the Swedish program to exemplify such uncertainties. We also devote a chapter on geochemical issues regarding the interaction between groundwater and natural and engineered barrier materials. A recommendation has been made to take advantage of the recent advancement in geochemical modeling capabilities in natural systems. Although it is not of immediate relevance at the preliminary investigation stage, it serves as a good reminder that geochemical investigation efforts should not be overlooked at any stage in the repository program. We construct a synthetic preliminary-investigation site based on an extensive data set available from a geoscientific project in Japan, which we use as a 'real' site to evaluate uncertainties resulting from hydrogeological modeling and examine strategies for characterizing a new site. We plan various preliminary-investigation configurations and conduct preliminary numerical investigations at the synthetic site. We construct a model of the 'real' site for each PI configuration, make predictions of particle travel times, and compare against the 'real' data obtained from the 'real' model. We conclude that drilling as many as nine boreholes does not necessarily improve the understanding of the site compared to drilling as few as three boreholes, unless there is an underlying structure that is larger than the spacing of the boreholes. The

  13. Nickel-hydrogen battery with oxygen and electrolyte management features

    DOE Patents [OSTI]

    Sindorf, John F. (Pewaukee, WI)

    1991-10-22

    A nickel-hydrogen battery or cell having one or more pressure vessels containing hydrogen gas and a plurality of cell-modules therein. Each cell-module includes a configuration of cooperatively associated oxygen and electrolyte mangement and component alignment features. A cell-module having electrolyte includes a negative electrode, a positive electrode adapted to facilitate oxygen diffusion, a separator disposed between the positive and negative electrodes for separating them and holding electrolyte for ionic conductivity, an absorber engaging the surface of the positive electrode facing away from the separator for providing electrolyte to the positive electrode, and a pair of surface-channeled diffusion screens for enclosing the positive and negative electrodes, absorber, and separator and for maintaining proper alignment of these components. The screens, formed in the shape of a pocket by intermittently sealing the edges together along as many as three sides, permit hydrogen gas to diffuse therethrough to the negative electrodes, and prevent the edges of the separator from swelling. Electrolyte is contained in the cell-module, absorbhed by the electrodes, the separator and the absorber.

  14. Basic features of the pion valence-quark distribution function

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

    Chang, Lei; Mezrag, Cdric; Moutarde, Herv; Roberts, Craig D.; Rodrguez-Quintero, Jose; Tandy, Peter C.

    2014-10-07

    The impulse-approximation expression used hitherto to define the pion's valence-quark distribution function is flawed because it omits contributions from the gluons which bind quarks into the pion. A corrected leading-order expression produces the model-independent result that quarks dressed via the rainbowladder truncation, or any practical analogue, carry all the pion's light-front momentum at a characteristic hadronic scale. Corrections to the leading contribution may be divided into two classes, responsible for shifting dressed-quark momentum into glue and sea-quarks. Working with available empirical information, we use an algebraic model to express the principal impact of both classes of corrections. This enables amorerealistic comparison with experiment that allows us to highlight the basic features of the pion's measurable valence-quark distribution, q?(x); namely, at a characteristic hadronic scale, q?(x)~(1-x)2 for x?0.85; and the valence-quarks carry approximately two-thirds of the pion's light-front momentum.less

  15. Features, Events, and Processes in SZ Flow and Transport

    SciTech Connect (OSTI)

    K. Economy

    2004-11-16

    This analysis report evaluates and documents the inclusion or exclusion of the saturated zone (SZ) features, events, and processes (FEPs) with respect to modeling used to support the total system performance assessment (TSPA) for license application (LA) of a nuclear waste repository at Yucca Mountain, Nevada. A screening decision, either ''Included'' or ''Excluded'', is given for each FEP along with the technical basis for the decision. This information is required by the U.S. Nuclear Regulatory Commission (NRC) at 10 CFR 63.114 (d), (e), (f) (DIRS 156605). This scientific report focuses on FEP analysis of flow and transport issues relevant to the SZ (e.g., fracture flow in volcanic units, anisotropy, radionuclide transport on colloids, etc.) to be considered in the TSPA model for the LA. For included FEPs, this analysis summarizes the implementation of the FEP in TSPA-LA (i.e., how the FEP is included). For excluded FEPs, this analysis provides the technical basis for exclusion from TSPA-LA (i.e., why the FEP is excluded).

  16. Features, Events, and Processes in SZ Flow and Transport

    SciTech Connect (OSTI)

    S. Kuzio

    2005-08-20

    This analysis report evaluates and documents the inclusion or exclusion of the saturated zone (SZ) features, events, and processes (FEPs) with respect to modeling used to support the total system performance assessment (TSPA) for license application (LA) of a nuclear waste repository at Yucca Mountain, Nevada. A screening decision, either Included or Excluded, is given for each FEP along with the technical basis for the decision. This information is required by the U.S. Nuclear Regulatory Commission (NRC) at 10 CFR 63.11(d), (e), (f) [DIRS 173273]. This scientific report focuses on FEP analysis of flow and transport issues relevant to the SZ (e.g., fracture flow in volcanic units, anisotropy, radionuclide transport on colloids, etc.) to be considered in the TSPA model for the LA. For included FEPs, this analysis summarizes the implementation of the FEP in TSPA-LA (i.e., how the FEP is included). For excluded FEPs, this analysis provides the technical basis for exclusion from TSPA-LA (i.e., why the FEP is excluded).

  17. Features, Events and Processes for the Used Fuel Disposition Campaign

    SciTech Connect (OSTI)

    Blink, J A; Greenberg, H R; Caporuscio, F A; Houseworth, J E; Freeze, G A; Mariner, P; Cunnane, J C

    2010-12-15

    The Used Fuel Disposition (UFD) Campaign within DOE-NE is evaluating storage and disposal options for a range of waste forms and a range of geologic environments. To assess the potential performance of conceptual repository designs for the combinations of waste form and geologic environment, a master set of Features, Events, and Processes (FEPs) has been developed and evaluated. These FEPs are based on prior lists developed by the Yucca Mountain Project (YMP) and the international repository community. The objective of the UFD FEPs activity is to identify and categorize FEPs that are important to disposal system performance for a variety of disposal alternatives (i.e., combinations of waste forms, disposal concepts, and geologic environments). FEP analysis provides guidance for the identification of (1) important considerations in disposal system design, and (2) gaps in the technical bases. The UFD FEPs also support the development of performance assessment (PA) models to evaluate the long-term performance of waste forms in the engineered and geologic environments of candidate disposal system alternatives. For the UFD FEP development, five waste form groups and seven geologic settings are being considered. A total of 208 FEPs have been identified, categorized by the physical components of the waste disposal system as well as cross-cutting physical phenomena. The combination of 35 waste-form/geologic environments and 208 FEPs is large; however, some FEP evaluations can cut across multiple waste/environment combinations, and other FEPs can be categorized as not-applicable for some waste/environment combinations, making the task of FEP evaluation more tractable. A FEP status tool has been developed to document progress. The tool emphasizes three major areas that can be statused numerically. FEP Applicability documents whether the FEP is pertinent to a waste/environment combination. FEP Completion Status documents the progress of the evaluation for the FEP/waste/environment combination. FEP Importance documents the potential importance for the FEP/waste/environment combination to repository performance.

  18. Structure of continental rifts: Role of older features and magmatism

    SciTech Connect (OSTI)

    Keller, G.R.

    1996-12-31

    Recent geological and geophysical studies in several continental rifts have begun to shed light on the details of the processes which govern the structural evolution of these important exploration targets. In Kenya and Tanzania, the classic East African rift has been the object of several investigations which reveal that its location follows the boundary (suture ?) between the Tanzanian craton (Archean) and Mozambiquan belt (Proterozoic), The Baikal rift also follows a similar boundary, and the Mid-continent rift of North America appears to do the same. Rifts themselves often act as zones of weakness which are reactivated by younger tectonic regimes. The classic North American example of this effect is the Eocambrian Southern Oklahoma aulacogen which was deformed to create the Anadarko basin and Wichita uplift in the late Paleozoic. The Central basin platform has a similar history although the original rift formed at {approximately}1,100Ma. Integration of geophysical data with petrologic and geochemical data from several rift zones has also provided a new picture of the nature and extent of magmatic modification of the crust. An interesting contradiction is that Phanerozoic rifts, except the Afar region, show little evidence for major magmatic modification of the crust whereas, at least in North America, many Precambrian rifts are associated with very large mafic bodies in the crust. The Kenya rift displays evidence for modification of the lower crust in a two-phase magmatic history, but upper crustal magmatic features are limited to local intrusions associated with volcanoes. In this rift, complex basement structure plays a much more important role than previously realized, and the geophysical signatures of basement structure and magmatism are easy to confuse. If this is also the case in other rifts, additional rift basins remain to be discovered.

  19. Structure of continental rifts: Role of older features and magmatism

    SciTech Connect (OSTI)

    Keller, G.R. )

    1996-01-01

    Recent geological and geophysical studies in several continental rifts have begun to shed light on the details of the processes which govern the structural evolution of these important exploration targets. In Kenya and Tanzania, the classic East African rift has been the object of several investigations which reveal that its location follows the boundary (suture ) between the Tanzanian craton (Archean) and Mozambiquan belt (Proterozoic), The Baikal rift also follows a similar boundary, and the Mid-continent rift of North America appears to do the same. Rifts themselves often act as zones of weakness which are reactivated by younger tectonic regimes. The classic North American example of this effect is the Eocambrian Southern Oklahoma aulacogen which was deformed to create the Anadarko basin and Wichita uplift in the late Paleozoic. The Central basin platform has a similar history although the original rift formed at [approximately]1,100Ma. Integration of geophysical data with petrologic and geochemical data from several rift zones has also provided a new picture of the nature and extent of magmatic modification of the crust. An interesting contradiction is that Phanerozoic rifts, except the Afar region, show little evidence for major magmatic modification of the crust whereas, at least in North America, many Precambrian rifts are associated with very large mafic bodies in the crust. The Kenya rift displays evidence for modification of the lower crust in a two-phase magmatic history, but upper crustal magmatic features are limited to local intrusions associated with volcanoes. In this rift, complex basement structure plays a much more important role than previously realized, and the geophysical signatures of basement structure and magmatism are easy to confuse. If this is also the case in other rifts, additional rift basins remain to be discovered.

  20. NREL: A Year in Clean Energy Innovations: A Review of NREL's Feature Stories

    SciTech Connect (OSTI)

    Not Available

    2010-01-01

    The publication is a compilation of various feature stories published on NREL's public Web site, nrel.gov, throughout 2009.

  1. Features, Events, and Processes in UZ Flow and Transport

    SciTech Connect (OSTI)

    J.E. Houseworth

    2001-04-10

    Unsaturated zone (UZ) flow and radionuclide transport is a component of the natural barriers that affects potential repository performance. The total system performance assessment (TSPA) model, and underlying process models, of this natural barrier component capture some, but not all, of the associated features, events, and processes (FEPs) as identified in the FEPs Database (Freeze, et al. 2001 [154365]). This analysis and model report (AMR) discusses all FEPs identified as associated with UZ flow and radionuclide transport. The purpose of this analysis is to give a comprehensive summary of all UZ flow and radionuclide transport FEPs and their treatment in, or exclusion from, TSPA models. The scope of this analysis is to provide a summary of the FEPs associated with the UZ flow and radionuclide transport and to provide a reference roadmap to other documentation where detailed discussions of these FEPs, treated explicitly in TSPA models, are offered. Other FEPs may be screened out from treatment in TSPA by direct regulatory exclusion or through arguments concerning low probability and/or low consequence of the FEPs on potential repository performance. Arguments for exclusion of FEPs are presented in this analysis. Exclusion of specific FEPs from the UZ flow and transport models does not necessarily imply that the FEP is excluded from the TSPA. Similarly, in the treatment of included FEPs, only the way in which the FEPs are included in the UZ flow and transport models is discussed in this document. This report has been prepared in accordance with the technical work plan for the unsaturated zone subproduct element (CRWMS M&O 2000 [153447]). The purpose of this report is to document that all FEPs are either included in UZ flow and transport models for TSPA, or can be excluded from UZ flow and transport models for TSPA on the basis of low probability or low consequence. Arguments for exclusion are presented in this analysis. Exclusion of specific FEPs from UZ flow and transport models does not necessarily imply that the FEP is excluded from the TSPA. Similarly, in the treatment of included FEPs, only the way in which FEPs are included in UZ flow and transport models is discussed in this document.

  2. Replication of surface features from a master model to an amorphous metallic article

    DOE Patents [OSTI]

    Johnson, William L. (Pasadena, CA); Bakke, Eric (Murrieta, CA); Peker, Atakan (Aliso Viejo, CA)

    1999-01-01

    The surface features of an article are replicated by preparing a master model having a preselected surface feature thereon which is to be replicated, and replicating the preselected surface feature of the master model. The replication is accomplished by providing a piece of a bulk-solidifying amorphous metallic alloy, contacting the piece of the bulk-solidifying amorphous metallic alloy to the surface of the master model at an elevated replication temperature to transfer a negative copy of the preselected surface feature of the master model to the piece, and separating the piece having the negative copy of the preselected surface feature from the master model.

  3. Studies of the jet in BL Lacertae. I. Recollimation shock and moving emission features

    SciTech Connect (OSTI)

    Cohen, M. H.; Hovatta, T.; Meier, D. L.; Arshakian, T. G.; Homan, D. C.; Kovalev, Y. Y.; Pushkarev, A. B.; Savolainen, T.

    2014-06-01

    Parsec-scale VLBA images of BL Lac at 15 GHz show that the jet contains a permanent quasi-stationary emission feature 0.26 mas (0.34 pc projected) from the core, along with numerous moving features. In projection, the tracks of the moving features cluster around an axis at a position angle of 166.6 that connects the core with the standing feature. The moving features appear to emanate from the standing feature in a manner strikingly similar to the results of numerical two-dimensional relativistic magneto-hydrodynamic (RMHD) simulations in which moving shocks are generated at a recollimation shock (RCS). Because of this, and the close analogy to the jet feature HST-1 in M87, we identify the standing feature in BL Lac as an RCS. We assume that the magnetic field dominates the dynamics in the jet, and that the field is predominantly toroidal. From this we suggest that the moving features are compressions established by slow and fast mode magneto-acoustic MHD waves. We illustrate the situation with a simple model in which the slowest moving feature is a slow-mode wave, and the fastest feature is a fast-mode wave. In the model, the beam has Lorentz factor ?{sub beam}{sup gal}?3.5 in the frame of the host galaxy and the fast mode wave has Lorentz factor ?{sub Fwave}{sup beam}?1.6 in the frame of the beam. This gives a maximum apparent speed for the moving features, ?{sub app} = v{sub app}/c = 10. In this model the Lorentz factor of the pattern in the galaxy frame is approximately three times larger than that of the beam itself.

  4. Sandia Energy - Joint BioEnergy Institute Oxime-NIMS Work Featured...

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

    Featured on the Cover of ACS Chemical Biology Home Renewable Energy Energy Transportation Energy Biofuels Facilities Capabilities JBEI News News & Events Research & Capabilities...

  5. NREL: A Year in Clean Energy Innovations, A Review of NREL's 2013 Feature Stories (Book)

    SciTech Connect (OSTI)

    Not Available

    2014-02-01

    The publication is a compilation of various feature stories published on NREL's public website, nrel.gov, throughout Calendar Year 2013.

  6. NREL: A Year in Clean Energy Innovations: A Review of NREL's Feature Stories, 2010

    SciTech Connect (OSTI)

    Not Available

    2011-04-01

    The publication is a compilation of various feature stories published on NREL's public website, nrel.gov, throughout Calendar Year 2010.

  7. NREL: A Year in Clean Energy Innovations: A Review of NREL's 2014 Feature Stories (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2015-03-01

    This publication is a compilation of various feature stories published on NREL's public website, nrel.gov, throughout Calendar Year 2014.

  8. NREL: A Year in Clean Energy Innovations, A Review of NREL's 2012 Feature Stories (Book)

    SciTech Connect (OSTI)

    Not Available

    2013-03-01

    The publication is a compilation of various feature stories published on NREL's public website, nrel.gov, throughout Calendar Year 2012.

  9. Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture

    DOE Patents [OSTI]

    West, Phillip B.; Novascone, Stephen R.; Wright, Jerry P.

    2012-05-29

    Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture are described. According to one embodiment, an earth analysis method includes engaging a device with the earth, analyzing the earth in a single substantially lineal direction using the device during the engaging, and providing information regarding a subsurface feature of the earth using the analysis.

  10. Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture

    DOE Patents [OSTI]

    West, Phillip B.; Novascone, Stephen R.; Wright, Jerry P.

    2011-09-27

    Earth analysis methods, subsurface feature detection methods, earth analysis devices, and articles of manufacture are described. According to one embodiment, an earth analysis method includes engaging a device with the earth, analyzing the earth in a single substantially lineal direction using the device during the engaging, and providing information regarding a subsurface feature of the earth using the analysis.

  11. Use of volumetric features for temporal comparison of mass lesions in full field digital mammograms

    SciTech Connect (OSTI)

    Bozek, Jelena Grgic, Mislav; Kallenberg, Michiel; Karssemeijer, Nico

    2014-02-15

    Purpose: Temporal comparison of lesions might improve classification between benign and malignant lesions in full-field digital mammograms (FFDM). The authors compare the use of volumetric features for lesion classification, which are computed from dense tissue thickness maps, to the use of mammographic lesion area. Use of dense tissue thickness maps for lesion characterization is advantageous, since it results in lesion features that are invariant to acquisition parameters. Methods: The dataset used in the analysis consisted of 60 temporal mammogram pairs comprising 120 mediolateral oblique or craniocaudal views with a total of 65 lesions, of which 41 were benign and 24 malignant. The authors analyzed the performance of four volumetric features, area, and four other commonly used features obtained from temporal mammogram pairs, current mammograms, and prior mammograms. The authors evaluated the individual performance of all features and of different feature sets. The authors used linear discriminant analysis with leave-one-out cross validation to classify different feature sets. Results: Volumetric features from temporal mammogram pairs achieved the best individual performance, as measured by the area under the receiver operating characteristic curve (A{sub z} value). Volume change (A{sub z} = 0.88) achieved higher A{sub z} value than projected lesion area change (A{sub z} = 0.78) in the temporal comparison of lesions. Best performance was achieved with a set that consisted of a set of features extracted from the current exam combined with four volumetric features representing changes with respect to the prior mammogram (A{sub z} = 0.90). This was significantly better (p = 0.005) than the performance obtained using features from the current exam only (A{sub z} = 0.77). Conclusions: Volumetric features from temporal mammogram pairs combined with features from the single exam significantly improve discrimination of benign and malignant lesions in FFDM mammograms compared to using only single exam features. In the comparison with prior mammograms, use of volumetric change may lead to better performance than use of lesion area change.

  12. Methods for the Precise Locating and Forming of Arrays of Curved Features into a Workpiece

    DOE Patents [OSTI]

    Gill, David Dennis (Albuquerque, NM); Keeler, Gordon A. (Albuquerque, NM); Serkland, Darwin K. (Albuquerque, NM); Mukherjee, Sayan D. (Albuquerque, NM)

    2008-10-14

    Methods for manufacturing high precision arrays of curved features (e.g. lenses) in the surface of a workpiece are described utilizing orthogonal sets of inter-fitting locating grooves to mate a workpiece to a workpiece holder mounted to the spindle face of a rotating machine tool. The matching inter-fitting groove sets in the workpiece and the chuck allow precisely and non-kinematically indexing the workpiece to locations defined in two orthogonal directions perpendicular to the turning axis of the machine tool. At each location on the workpiece a curved feature can then be on-center machined to create arrays of curved features on the workpiece. The averaging effect of the corresponding sets of inter-fitting grooves provide for precise repeatability in determining, the relative locations of the centers of each of the curved features in an array of curved features.

  13. FAINT TIDAL FEATURES IN GALAXIES WITHIN THE CANADA-FRANCE-HAWAII TELESCOPE LEGACY SURVEY WIDE FIELDS

    SciTech Connect (OSTI)

    Atkinson, Adam M.; Abraham, Roberto G.; Ferguson, Annette M. N.

    2013-03-01

    We present an analysis of the detectability of faint tidal features in galaxies from the wide-field component of the Canada-France-Hawaii Telescope Legacy Survey. Our sample consists of 1781 luminous (M{sub r{sup '}}<-19.3 mag) galaxies in the magnitude range 15.5 mag < r' < 17 mag and in the redshift range 0.04 < z < 0.2. Although we have classified tidal features according to their morphology (e.g., streams, shells, and tails), we do not attempt to interpret them in terms of their physical origin (e.g., major versus minor merger debris). Instead, we provide a catalog that is intended to provide raw material for future investigations which will probe the nature of low surface brightness substructure around galaxies. We find that around 12% of the galaxies in our sample show clear tidal features at the highest confidence level. This fraction rises to about 18% if we include systems with convincing, albeit weaker tidal features, and to 26% if we include systems with more marginal features that may or may not be tidal in origin. These proportions are a strong function of rest-frame color and of stellar mass. Linear features, shells, and fans are much more likely to occur in massive galaxies with stellar masses >10{sup 10.5} M {sub Sun }, and red galaxies are twice as likely to show tidal features than are blue galaxies.

  14. Significance-weighted feature extraction from hyper-dimensional data and its applications

    SciTech Connect (OSTI)

    Fujimura, S.; Kiyasu, S.

    1996-11-01

    Extracting significant features is essential for processing and transmission of vast volume of hyper-dimensional data. Conventional ways of extracting features are not always satisfactory for this kind of data in terms of optimality and computation time. Here we present a successive feature extraction method designed for significance-weighted supervised classification. After all the data are orthogonalized and reduced by principal component analysis, a set of appropriate features for prescribed purpose is extracted as linear combinations of the reduced components. We applied this method to 411 dimensional hyperspectral data obtained by a ground-based imaging spectrometer. The data were obtained from tree leaves of five categories, soil, stone and concrete. Features were successively extracted, and they were found to yield more than several percents higher accuracy for the classification of prescribed classes than a conventional method. We applied the results of feature extraction for evaluating the performance of current sensors and for designing the spectral bands of new sensors. Bands of new sensors were designed by allocating them to the highly weighted wavelength in extracted features. The designed bands were revealed to be more appropriate for the specific purpose than the current sensors. 8 refs., 11 figs., 3 tabs.

  15. Featured Articles

    Office of Science (SC) Website

    Award. 8CC841F4-EA48-4038-BA00-09C81040C015http:1.usa.gov1kagbcv Flowing Toward Red Blood Cell Breakthroughs

  16. Featured Announcements

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

    September 2010 NUG Call Tuesday Sept 2, 2010 10am PST September 2, 2010

  17. Featured Announcements

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

    January 2011 NERSC seeks Computational Systems Group Lead January 6, 2011 by Katie Antypas Note: This position is now closed. Read the full post NISE Requests Due Feb. 24 January 1, 2011 by Francesca Verdier The first round of NERSC Initiative for Scientific Exploration (NISE) requests are due February 24. Ten percent of NERSC time is allocated through this program. See NERSC Initiative for Scientific Exploration

  18. Featured Announcements

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

    February 2011 NERSC training events: Data Transfer and Archiving; Chemistry and Material Sciences Applications February 21, 2011 by Richard Gerber NERSC will present two training events in March: Data Transfer and Archiving March 8, 2011 10:00-12:30 Pacific Time Using Chemistry and Material Sciences Applications at NERSC March 22, 2011 10:00-12:00 Pacific Time Each event will be held concurrently at NERSC's Oakland Scientific Facility and over the web

  19. Featured Announcements

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

    April 2011 NERSC Online Training May 3: Navigating NERSC File Systems April 26, 2011 by Richard Gerber A NERSC training event, "Navigating NERSC File Systems," will be presented Tuesday, May 3, 2011, from 10:00 -11:00 PDT. This event was postponed from April 26. The event will be presented simultaneously at the NERSC Oakland Scientific Facility and as a webcast. Read the full post NUG teleconference April 14, 2011 April 13, 2011 by Francesca Verdier On the agenda: Hopper time

  20. Featured Announcements

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

    June 2011 New 1 Terabyte Memory Node June 17, 2011 by Francesca Verdier A new "extra large" memory node that has four 8-core Nehalem EX processors (32 cores total) and 1TB memory has been deployed in the Carver/Magellan complex. See Memory Considerations on Carver. Read the full post SC11 Education Program Applications due July 31 June 9, 2011 by Francesca Verdier Applications for the Education Program are now being accepted. Submission website: https://submissions.supercomputing.org

  1. Featured Announcements

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

    July 2011 Workshop on Cray XE6 User Experiences September 27-28 July 11, 2011 by Francesca Verdier Sandia National Laboratory and Cray Inc are hosting a Workshop on Cray XE6 User Experiences in Albuquerque, New Mexico, on September 27 -28, 2011. The workshop will focus on:

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    August 2011 Hopper Scaling Incentive Program August 30, 2011 by Francesca Verdier For projects that haven't yet scaled their codes to 683 or more nodes (which is the level at which a job is considered "big" on hopper) NERSC is offering scaling incentives, mostly focused on the use of OpenMP. For some codes, adding OpenMP directives will allow you to scale up and run bigger science problems. For users accepted in the Scaling Incentive Program: Read the full post Intel compiler now

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    September 2011 Serial and Westmere Queues on Carver September 20, 2011 by Francesca Verdier NERSC has replaced 80 8-core Intel Nehalem nodes on Carver with 80 12-core Intel Westmere nodes. The new processors run at the same frequency as those they replace, but have slightly larger caches. Also, the Westmere nodes are populated with 48GB of memory; the memory runs at 1333MHz. This new hardware serves two purposes. First, it provides access to more memory (48GB) than is available on other Carver

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    October 2011 Bioinformatics Computing Consultant Position Available October 31, 2011 by Katie Antypas NERSC and the Joint Genome Institute (JGI) are searching for two individuals who can help biologists exploit advanced computing platforms. JGI provides production sequencing and genomics for the Department of Energy. These activities are critical to the DOE missions in areas related to clean energy generation and environmental characterization and cleanup. JGI has recently partnered with NERSC,

  5. Featured Announcements

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    November 2011 ASCR Leadership Computing Challenge Requests for Time Due February 14 November 17, 2011 by Francesca Verdier The ASCR Leadership Computing Challenge (ALCC) program is open to scientists from the research community in national laboratories, academia and industry. This program allocates time at NERSC and the Leadership Computing Facilities at Argonne and Oak Ridge. Areas of interest are: Read the full post Magellan Queues End November 30 November 15, 2011 by Francesca Verdier

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    December 2011 Call for Proposals: NERSC Initiative for Scientific Exploration - deadline is January 25 December 20, 2011 by Francesca Verdier NERSC allocates 10% of the total MPP hours on our computational systems through the NERSC Initiative for Scientific Exploration (NISE) program. This year we expect to allocate about 100 million hours to a few large projects. Read the full post NERSC 2012 awards December 8, 2011 by Francesca Verdier The NERSC 2012 awards have been posted

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    January 2012 NERSC User Group Annual Meeting February 1-3, 2012 January 5, 2012 by Francesca Verdier Registration is open for the NERSC Users' Group Meeting and HPC training on Feb. 1-3, 2012. The meeting will be held at NERSC's Oakland Scientific Facility in Oakland, CA. All three days will be available as a WebEx web meeting for remote participation. All NERSC users are invited to attend all three days

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    February 2012 NERSC Seeks New Director - Job Position Posted February 19, 2012 by Francesca Verdier Current NERSC Director Kathy Yelick was named Associate Lab Director for Computing Sciences at Berkeley Lab in September 2010. In order to focus more on strategic planning at the lab, she has opened a search for a new NERSC Division Director. This position provides vision and strategic leadership to establish and maintain the leading-edge computing capability available to scientists at NERSC while

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    March 2012 Franklin to be Retired April 30, 2012 March 6, 2012 by Francesca Verdier Franklin and its external login node Freedom will be retired on April 30, 2012. Batch processing will end on April 26.

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    April 2012 Eight Projects Selected for NERSC's Data Intensive Computing Pilot Program April 30, 2012 by Francesca Verdier Eight projects have been selected to participate in NERSC's Data Intensive Computing Pilot Program. They will help us investigate new data methods and understand their usefulness to scientists using NERSC resources. The selected projects are:

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    May 2012 NOVA Portal: Submit VASP Jobs to Carver via the Web May 11, 2012 by Francesca Verdier NOVA is an experimental web application that enables users to submit VASP jobs to NERSC resources. You must be a licensed VASP user in order to submit jobs through NOVA. This initial version of NOVA runs only on Carver

  12. Featured Announcements

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    June 2012 Cray to Install Cascade System at NERSC June 27, 2012 by Richard Gerber Cray will install a next-generation supercomputer code-named "Cascade" and a next-generation Cray Sonexion storage system at NERSC. Read the press release. Read the full post Visualization Contest Applications due August 3 June 22, 2012 by Francesca Verdier In support of the IEEE Symposium on Large-Scale Data Analysis and Visualization (LDAV) 2012's visualization contest, LDAV organizers are offering

  13. Featured Announcements

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    August 2012 2013 Allocation Request Submissions Due September 28 August 1, 2012 by Francesca Verdier The deadline for submissions for 2013 NERSC allocation requests is September 28 at 11:59 p.m. PDT. All current 2012 NERSC projects (including startup, education, ALCC, NISE and Data Intensive Pilot projects) must be renewed for 2013 in order to continue using NERSC

  14. Featured Announcements

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    October 2012 Applications for Postdoctoral Fellowship in Computational Science at Berkeley Lab due November 26 October 15, 2012 by Francesca Verdier Researchers in computer science, applied mathematics or any computational science discipline who have received their Ph.D. within the last three years are encouraged to apply for the Luis W. Alvarez Postdoctoral Fellowship in Computational Science at Lawrence Berkeley National Laboratory. Read the full post New NERSC Director Sudip Dosanjh October

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    November 2012 Phase-1 of NERSC's Cray Edison System Has Arrived November 28, 2012 by Francesca Verdier Phase-1 of the new Edison system, a Cray XC30 (Cascade), arrived at NERSC on November 27. The system will be available to users in 2013; early user access is targeted for February. See Edison Overview

  16. Featured Announcements

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    December 2012 NERSC Allocation Year 2012 Ends Monday, January 7 December 19, 2012 by David Turner NERSC's Allocation Year 2012 (AY12) will end on Monday, January 7, 2013; AY13 will begin on Tuesday, January 8, 2013. Complete information about this event may be found here. Read the full post NERSC 2013 awards December 14, 2012 by David Turner The NERSC 2013 awards have been posted

  17. Featured Announcements

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    January 2013 ASCR Leadership Computing Challenge (ALCC) proposals due February 1, 2013 January 2, 2013 by Francesca Verdier DOE's ASCR Leadership Computing Challenge (ALCC) program is intended for special situations of interest to the Department's energy mission, with an emphasis on high-risk, high-payoff simulations: Read the full post Call for presentations and registration is open for NUG 2013. January 2, 2013 by Richard Gerber Registration is open for NUG 2013, the annual meeting of the

  18. Featured Announcements

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    February 2013 NERSC User Day February 13 - Trends, Discovery, and Innovation in HPC February 10, 2013 by Francesca Verdier All members of the Berkeley Lab community, as well as those who have registered for the NERSC Users Group meeting, are welcome to join us for the NERSC User Day this February 13, 2013, in the Building 50 auditorium at Berkeley Lab

  19. Featured Announcements

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    March 2013 Track NERSC Outages in Google Calendar March 22, 2013 by Jack Deslippe Outages are now available in Google calendar form. You can subscribe to this calendar by following the link, http://goo.gl/A4n3k, and then clicking the add button on the bottom right. If you find any issues with the calendar content, please contact NERSC consultants by email at consult(at)nersc.gov. Read the full post HPSS Outage Tue Mar 19 - Fri Mar 22 March 12, 2013 by Francesca Verdier The NERSC HPSS

  20. Featured Announcements

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    April 2013 2014 INCITE Call for Proposals - Due June 28 April 30, 2013 by Francesca Verdier The 2014 INCITE Call for Proposals is now open. Open to researchers from academia, government labs, and industry, the INCITE Program is the major means by which the scientific community gains access to the Leadership Computing Facilities' resources. INCITE is currently soliciting proposals for research on the 27-petaflops Cray XK7 "Titan" and the 10-petaflops IBM Blue Gene/Q "Mira"

  1. Featured Announcements

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

    May 2013 Users May Now Clear Their Own Login Failures May 16, 2013 by Francesca Verdier Users may now clear their own login failures simply by logging in to the NIM website (https://nim.nersc.gov). No further steps are necessary; that is, the simple act of logging in to NIM will clear your login failures on all NERSC compute systems. NIM will then provide a display of the number of login failures that were cleared on each compute system that was affected at the top of the NIM landing page

  2. Featured Announcements

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

    June 2013 Introduction to HPC using GPUs July 11, 2013 June 18, 2013 by Francesca Verdier Registration is open for a one-day class "Introduction to High Performance Computing using GPUs" on July 11, 2013. The class is being held on the University of California Berkeley campus in Sutardja Dai Hall room 250 and will be broadcast to remote viewers. For more information and to register (both local and remote attendees), please visit

  3. Featured Announcements

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    July 2013 New Account Request form for new NERSC accounts July 15, 2013 NERSC has implemented a new, user initiated account request form for new NERSC user accounts to all NERSC projects. This form is intended to reduce data entry errors and also reduce processing time by allowing a new user to enter their information for an account into a form that goes directly into the NIM database. This methodology has been in use by the PDSF and JGI communities and we are now extending it to the MPP

  4. Featured Announcements

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    August 2013 All Users Now Enabled on Edison Phase 2 August 30, 2013 by Francesca Verdier All user accounts have been enabled on the second phase of Edison, a Cray XC30 with 5,200 compute nodes and roughly twice the sustained system performance of Hopper. The user environment on Edison phase 2 is the same as that on Edison phase 1, Of particular note is that the default programming environment uses the Intel compilers and the PGI compilers are not available. While most of the applications that

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    September 2013 Video Tutorial for Submitting a 2014 ERCAP Request available September 17, 2013 Rushing to meet the September 22nd deadline for submitting your 2014 ERCAP renewal request? Would you spend sixteen and a half minutes to possibly save hours of frustration? Then check out the new video tutorial on How to Submit a 2014 ERCAP Request and get the information you need to speed through your ERCAP submission and save yourself time and headaches. Read the full post New Global Scratch File

  6. Featured Announcements

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    November 2013 2014 Call for NERSC Initiative for Scientific Exploration (NISE) Program Due December 8 November 18, 2013 by Francesca Verdier Users may now submit requests for the 2014 NERSC Initiative for Scientific Exploration (NISE) program. The deadline to apply is Sunday December 8, 11:59 PM Pacific Time. Read the full post Call for nominations for NERSC HPC Achievement Awards Due December 16 November 18, 2013 by Francesca Verdier Nominations are open for the 2014 NERSC Award for Innovative

  7. Featured Announcements

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    December 2013 2014 DOE ALCC Proposals Due February 3 December 23, 2013 by Francesca Verdier DOE's 2014 call for its ASCR Leadership Computing Challenge (ALCC) competition is posted: http://science.energy.gov/ascr/facilities/alcc/. There are new guidelines this year: http://science.energy.gov/ascr/facilities/alcc/alcc-application-details/. Proposals for 2014 ALCC are due 11:59 PM EST February 3rd, 2014. Email your completed proposal to ALCC@science.doe.gov. PDF format is preferred but not

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    March 2014 Berkeley Lab's Bill Collins talks about Modeling the Changing Earth System: Prospects and Challenges. From the 2014 NERSC User's Group Meeting March 20, 2014 by Richard Gerber Modeling the Changing Earth System: Prospects and Challenges, William Collins, Berkeley Lab

  9. Featured Announcements

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    April 2014 NERSC announces its next supercomputer April 29, 2014 by Francesca Verdier NERSC and Cray Inc. announced today that they have signed a contract for NERSC's next supercomputer. The new Cray XC system will use Intel's next-generation Intel® Xeon Phi(tm) processor -- code-named "Knights Landing" -- a self-hosted, manycore processor with on-package high bandwidth memory and delivers more than 3 teraFLOPS of double-precision peak performance per single socket node. Scheduled for

  10. Featured Announcements

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    August 2014 2015 NERSC allocation requests due September 22 August 13, 2014 by Francesca Verdier The NERSC allocation submission system is now open for 2015 requests. All current NERSC projects (including startup, education, Director Reserve, and ALCC projects) must be renewed for 2015 if you wish to continue using NERSC. New project requests may be submitted as well (for either the remainder of 2014 or to start in 2015). The deadline for 2015 requests is 23:59 Pacific Time September 22, 2014

  11. Featured Announcements

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    October 2014 Major NERSC Maintenance Tuesday November 11 October 31, 2014 by Francesca Verdier There will be a major NERSC maintenance on Tuesday, November 11, from 08:00 until 18:00 PST. Several systems and services will be unavailable during this time

  12. Featured Announcements

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    November 2014 Soliciting Candidates for NERSC User Group Executive Committee November 12, 2014 by Francesca Verdier The NERSC User Group is soliciting candidates for the upcoming election for NUGEX, the executive committee of the NERSC Users' Group (NUG). NUGEX is the voice of the user community to NERSC and DOE and is consulted on many NERSC policy issues, e.g., batch configurations, disk quotas, services and training offerings. There are 8 openings to represent Fusion Energy Sciences, High

  13. Featured Announcements

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    December 2014 2014 NERSC User Survey December 17, 2014 by Francesca Verdier Please take a few minutes to fill out NERSC's annual user survey. Your feedback is important because it allows us to judge the quality of our services, give DOE information on how we are doing, and point us to areas in which we can improve. The survey is on the web at the URL: https://www.nersc.gov/news-publications/publications-reports/user-surveys/2014/ and covers the allocation year 2014. Read the full post NERSC 2015

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    January 2015 NERSC Exascale Science Postdoctoral Fellowships January 26, 2015 Applications are being accepted for up to eight postdoctoral fellowship positions at NERSC. The positions are part of a larger effort to enable new, pathbreaking science with NERSC's next generation manycore Cori supercomputer. Fellows will be working in multidisciplinary teams composed of computer, computational, and domain scientists that will transition codes to the Cori system and produce mission-relevant science

  15. Featured Announcements

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    March 2015 Intel Led OpenMP Training Session at NERSC This Wednesday March 25 March 24, 2015 by Katie Antypas This Wednesday, March 25th, from 10AM-2PM pacific at NERSC's Oakland Facility (415 20th St, Oakland, CA 94612), NERSC will be hosting an Intel led OpenMP threading training session. This is a great chance to learn the methodology for starting with a serial or MPI only code, identifying regions of interest for OpenMP and effectively creating a hybrid MPI-OpenMP application

  16. Featured Announcements

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    July 2015 Intel Xeon Phi Webinar Series July 2, 2015 by Richard Gerber Intel, through a third-party trainer, is sponsoring a series of webinars focused on the Xeon Phi. You can register at https://attendee.gotowebinar.com/register/1855310790447082498

  17. Featured Announcements

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    September 2015 AY 2016 ERCAP Renewals Due Sept 21st September 18, 2015 Rememeber to submit your AY 2016 ERCAP renewal requests by 21:59 on Monday Sept. 21st. Read the full post ERCAP Deadline is Sept 21, 2015 September 18, 2015 by Clayton Bagwell Don't forget to submit your 2016 ERCAP renewal request. Read the full post Out of time? Use scavenger queue on Hopper September 18, 2015 by Katie Antypas NERSC is now allowing projects and users who have fewer than 100,000 MPP hours to run in the

  18. Featured Announcements

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    October 2015 Global Scratch (/global/scratch2 aka $GSCRATCH) will be retired on October 14 at 12:00 PDT October 9, 2015 by Richard Gerber This is a reminder that the Global Scratch (/global/scratch2 aka $GSCRATCH) file system will be retired on next Wednesday, October 14 at 12:00 (noon) PDT. The file system will be decommissioned and not be accessible after its retirement. Please make sure to back up your important files to HPSS or another permanent file systems. Do not wait until the last day

  19. Featured Announcements

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    November 2015 Edison scratch files will be deleted on 11/30/2015 when Edison moves November 15, 2015 by Zhengji Zhao Edison is scheduled to be powered off at 7:00am PST on November 30, 2015 to move to our new CRT building. We expect Edison to be offline for up to six weeks. During the move Edison's scratch file systems will be reformatted and all data will be removed. ALL files on the /scratch1, /scratch2, and /scratch3 file systems WILL BE DELETED! Please save your important files on HPSS, your

  20. Featured Announcements

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    December 2015 Hopper has retired. NERSC is moving! December 16, 2015 by Katie Antypas NERSC's Hopper system has retired and NERSC (people and remaining systems) are moving to our new facility on the hill. We thank all our users for your patience during our move! Regards, Katie Antypas Department Head for Scientific Computing and Data Services

  1. Featured Announcements

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    January 2016 Edison's move is complete January 8, 2016 by Richard Gerber We're pleased to announce that Edison is once again available to all NERSC users. The move from the NERSC Oakland Scientific Facility to the main Berkeley Lab campus was completed one week earlier than expected! Usage will not be charged through the end of the allocation year. Edison is now using the SLURM batch scheduler and job launcher (qsub will not work!). Please see the following web page for more information:

  2. features | JCESR

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    Team Led by Argonne National Lab Selected as DOE's Batteries and Energy Storage Hub On ... to announce that a multi-partner team led by Argonne National Laboratory has been ...

  3. Featured Announcements

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    register6325131222429932289)

    Mon, August 17 - "Hello world from Intel Xeon Phi coprocessors". Overview of architecture, preview of course...

  4. Featured Announcements

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    October 2013 OpenCL now Available on Dirac GPU Cluster October 30, 2013 by Francesca Verdier As requested by many Dirac users, NERSC is migrating Dirac to a newer Linux version to...

  5. ALSNews Features

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    properties of the iron distribution and organic carbon in mine drainage samples. John Turner, from the National Renewable Energy Laboratory (NREL), was up next with a lively...

  6. Featured Announcements

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    See Chemistry and Material Sciences Applications. Read the full post Student Summer Internships at NERSC March 9, 2011 by Francesca Verdier NERSC has internship positions in cloud...

  7. Featured Announcements

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    on utilization andor free memory Through the use of modern web technology such as HTML5, advanced javascript libraries and WebGL, NERSC has created rich web applications for...

  8. Featured Announcements

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    May 2011 X-Windows Acceleration via NX May 12, 2011 by Francesca Verdier NX is a computer program that handles remote X-Windows connections. It can greatly improve the speed of...

  9. Featured Announcements

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    August 2015 Parallel Programming and Optimization for Intel Architecture August 14, 2015 by Richard Gerber Intel is sponsoring a series of webinars entitled "Parallel Programming...

  10. A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA Citation Details In-Document Search Title: A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA One of the major differences between various explosion scenarios of Type Ia supernovae (SNe Ia) is the remaining amount of unburned (C+O) material and its velocity distribution within the expanding ejecta. While oxygen absorption features are not uncommon in the spectra of SNe Ia before maximum light, the presence of strong

  11. Notre Dame EFRC featured during nationally televised football half-time

    Office of Science (SC) Website

    show | U.S. DOE Office of Science (SC) Notre Dame EFRC featured during nationally televised football half-time show Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News EFRC Events DOE Announcements Publications History Contact BES Home 11.21.09 Notre Dame EFRC featured during nationally televised football half-time show Print Text Size: A A A Subscribe FeedbackShare Page Nov 21, 2009 :: NBC aired a video feature External link of

  12. Berkeley Lab's New Computing Sciences Facility Features First-of-Its-Kind

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

    Seismic Floor Berkeley Lab's New Computing Sciences Facility Features First-of-Its-Kind Seismic Floor Berkeley Lab's New Computing Sciences Facility Features First-of-Its-Kind Seismic Floor November 9, 2015 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov CRT When the new Shyh Wang Hall building at Lawrence Berkeley National Laboratory (Berkeley Lab) is officially unveiled November 12, one of its most unique features will not be on display. In fact, it is tucked away beneath the

  13. US Department of Energy Promotes Special Earth Week Feature on Energy.gov |

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

    Department of Energy US Department of Energy Promotes Special Earth Week Feature on Energy.gov US Department of Energy Promotes Special Earth Week Feature on Energy.gov April 22, 2009 - 12:00am Addthis WASHINGTON, DC - During Earth Week, visitors to the U.S. Department of Energy website -- energy.gov -- will be immediately directed to a special web feature giving them key energy saving tips and user-friendly information about the critical emerging technologies and initiatives underway to

  14. AN ENIGMATIC POINT-LIKE FEATURE WITHIN THE HD169142 TRANSITIONAL DISK ,

    SciTech Connect (OSTI)

    Biller, Beth A.; Males, Jared; Morzinski, Katie; Close, Laird M.; Follette, Katherine B.; Hinz, Philip M.; Rodigas, Timothy; Weinberger, Alycia; Juhsz, Attila; Lacour, Sylvestre; Henning, Thomas; Pott, Jrg-Uwe; Khler, Rainer; Bonnefoy, Mickal

    2014-09-01

    We report the detection of a faint point-like feature possibly related to ongoing planet-formation in the disk of the transition disk star HD169142. The point-like feature has a ?mag(L)? 6.4, at a separation of ?0.''11 and position angle ?0. Given its lack of an H or K{sub S} counterpart despite its relative brightness, this candidate cannot be explained by purely photospheric emission and must be a disk feature heated by an as yet unknown source. Its extremely red colors make it highly unlikely to be a background object, but future multi-wavelength follow up is necessary for confirmation and characterization of this feature.

  15. June 3, 2014 Webinar- Features, Events, and Processes: Practical Considerations for Development and Selection of Scenarios

    Broader source: Energy.gov [DOE]

    P&RA CoP Webinar - June 3, 2014 - Features, Events, and Processes: Practical Considerations for Development and Selection of Scenarios Geoff Freeze (SNL) and Roger Seitz (SRNL)

  16. The Crystal Structure of Mouse Exo70 Reveals Unique Features of the

    Office of Scientific and Technical Information (OSTI)

    Mammalian Exocyst (Journal Article) | SciTech Connect SciTech Connect Search Results Journal Article: The Crystal Structure of Mouse Exo70 Reveals Unique Features of the Mammalian Exocyst Citation Details In-Document Search Title: The Crystal Structure of Mouse Exo70 Reveals Unique Features of the Mammalian Exocyst Authors: Moore, Brian A. ; Robinson, Howard H. ; Xu, Zhaohui [1] ; Michigan-Med) [2] + Show Author Affiliations BNL ( Publication Date: 2015-08-24 OSTI Identifier: 1186909

  17. Fall Lectures Feature Life of Einstein; Exploring Our World With Particle

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    Accelerators | Jefferson Lab Fall Lectures Feature Life of Einstein; Exploring Our World With Particle Accelerators NEWPORT NEWS, Va., Sept. 22, 2010 - Jefferson Lab's first 2010 Fall Science Series lecture, "Einstein For Everyone," is set for Tuesday, Oct. 5, and will feature the life, challenges and achievements of the young Albert Einstein. Einstein was a rebel who seemed doomed to fail, according to guest lecturer Robert Piccioni, author of "Everyone's Guide to Atoms,

  18. Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop

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

    Music | Jefferson Lab Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop Music NEWPORT NEWS, Va., Feb. 2, 2010 - Jefferson Lab's Feb. 9 Science Series event will feature members of the Tidewater Alliance of Chemistry Teachers (TACT) presenting 11 elaborate chemical demonstrations that have been choreographed and set to popular music. The program, titled A TACT-ful Chemical Musical, also incorporates some audience participation. The Tidewater Alliance of Chemistry

  19. November 27 Webinar to Feature Broad Array of Tribal Energy Development

    Office of Environmental Management (EM)

    Resources | Department of Energy November 27 Webinar to Feature Broad Array of Tribal Energy Development Resources November 27 Webinar to Feature Broad Array of Tribal Energy Development Resources November 20, 2013 - 4:50pm Addthis The U.S. Department of Energy (DOE) Office of Indian Energy, the DOE Office of Energy Efficiency and Renewable Energy's (EERE) Tribal Energy Program, and the Western Area Power Administration (Western) will present the next Tribal Renewable Energy Series webinar,

  20. ARPA-E's Seventh Annual Energy Innovation Summit to Feature America's

    Energy Savers [EERE]

    Cutting-Edge Technologies and Convene Top Energy Innovators | Department of Energy E's Seventh Annual Energy Innovation Summit to Feature America's Cutting-Edge Technologies and Convene Top Energy Innovators ARPA-E's Seventh Annual Energy Innovation Summit to Feature America's Cutting-Edge Technologies and Convene Top Energy Innovators February 1, 2016 - 2:25pm Addthis News Media Contact 202-586-4940 DOENews@hq.doe.gov WASHINGTON - The Department of Energy's Advanced Research Projects

  1. AP1000{sup R} severe accident features and post-Fukushima considerations

    SciTech Connect (OSTI)

    Scobel, J. H.; Schulz, T. L.; Williams, M. G.

    2012-07-01

    The AP1000{sup R} passive nuclear power plant is uniquely equipped to withstand an extended station blackout scenario such as the events following the earthquake and tsunami at Fukushima without compromising core and containment integrity. The AP1000 plant shuts down the reactor, cools the core, containment and spent fuel pool for more than 3 days using passive systems that do not require AC or DC power or operator actions. Following this passive coping period, minimal operator actions are needed to extend the operation of the passive features to 7 days using installed equipment. To provide defense-in-depth for design extension conditions, the AP1000 plant has engineered features that mitigate the effects of core damage. Engineered features retain damaged core debris within the reactor vessel as a key feature. Other aspects of the design protect containment integrity during severe accidents, including unique features of the AP1000 design relative to passive containment cooling with water and air, and hydrogen management. (authors)

  2. Automated retrieval of cloud and aerosol properties from the ARM Raman lidar, part 1: feature detection

    SciTech Connect (OSTI)

    Thorsen, Tyler J.; Fu, Qiang; Newsom, Rob K.; Turner, David D.; Comstock, Jennifer M.

    2015-11-01

    A Feature detection and EXtinction retrieval (FEX) algorithm for the Atmospheric Radiation Measurement (ARM) program’s Raman lidar (RL) has been developed. Presented here is part 1 of the FEX algorithm: the detection of features including both clouds and aerosols. The approach of FEX is to use multiple quantities— scattering ratios derived using elastic and nitro-gen channel signals from two fields of view, the scattering ratio derived using only the elastic channel, and the total volume depolarization ratio— to identify features using range-dependent detection thresholds. FEX is designed to be context-sensitive with thresholds determined for each profile by calculating the expected clear-sky signal and noise. The use of multiple quantities pro-vides complementary depictions of cloud and aerosol locations and allows for consistency checks to improve the accuracy of the feature mask. The depolarization ratio is shown to be particularly effective at detecting optically-thin features containing non-spherical particles such as cirrus clouds. Improve-ments over the existing ARM RL cloud mask are shown. The performance of FEX is validated against a collocated micropulse lidar and observations from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite over the ARM Darwin, Australia site. While we focus on a specific lidar system, the FEX framework presented here is suitable for other Raman or high spectral resolution lidars.

  3. Efficient Feature-Driven Visualization of Large-Scale Scientific Data

    SciTech Connect (OSTI)

    Lu, Aidong

    2012-12-12

    Very large, complex scientific data acquired in many research areas creates critical challenges for scientists to understand, analyze, and organize their data. The objective of this project is to expand the feature extraction and analysis capabilities to develop powerful and accurate visualization tools that can assist domain scientists with their requirements in multiple phases of scientific discovery. We have recently developed several feature-driven visualization methods for extracting different data characteristics of volumetric datasets. Our results verify the hypothesis in the proposal and will be used to develop additional prototype systems.

  4. ARPA-E Announces 2012 Energy Innovation Summit Featuring Bill Gates, Fred

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

    Smith and Lee Scott | Department of Energy 2012 Energy Innovation Summit Featuring Bill Gates, Fred Smith and Lee Scott ARPA-E Announces 2012 Energy Innovation Summit Featuring Bill Gates, Fred Smith and Lee Scott September 9, 2011 - 9:25am Addthis New York, NY - The U.S. Department of Energy's Advanced Research Projects Agency - Energy (ARPA-E) Director, Arun Majumdar, announced yesterday that the Agency will hold its third annual ARPA-E Energy Innovation Summit from February 27 - 29, 2012

  5. Special Feature: National Security & Public Safety at the National Labs |

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

    Department of Energy Special Feature: National Security & Public Safety at the National Labs Special Feature: National Security & Public Safety at the National Labs December 4, 2013 - 4:10pm Addthis In the photo above, a robot investigates a bomb threat at an arcade during the 2013 Robot Rodeo at Sandia Labs. The operators are not allowed to turn on the lights or turn off the machines, complicating the operation. | Photo by Randy Montoya, Sandia National Laboratories. In the photo

  6. SU-E-J-237: Image Feature Based DRR and Portal Image Registration (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect SU-E-J-237: Image Feature Based DRR and Portal Image Registration Citation Details In-Document Search Title: SU-E-J-237: Image Feature Based DRR and Portal Image Registration Purpose: Two-dimensional (2D) matching of the kV X-ray and digitally reconstructed radiography (DRR) images is an important setup technique for image-guided radiotherapy (IGRT). In our clinics, mutual information based methods are used for this purpose on commercial linear accelerators, but

  7. The Role of Circulation Features on Black Carbon Transport into the Arctic

    Office of Scientific and Technical Information (OSTI)

    in the Community Atmosphere Model Version 5 (CAM5) (Journal Article) | SciTech Connect The Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5) Citation Details In-Document Search Title: The Role of Circulation Features on Black Carbon Transport into the Arctic in the Community Atmosphere Model Version 5 (CAM5) Current climate models generally under-predict the surface concentration of black carbon (BC) in the Arctic due to

  8. B I OENV I RONMENTAL FEATURES OF THE OGOTORUK CREEK AREA, CAPE THOMPSON, ALASKA

    Office of Legacy Management (LM)

    B I OENV I RONMENTAL FEATURES OF THE OGOTORUK CREEK AREA, CAPE THOMPSON, ALASKA A First Summary by The Committee on Environmental Studies for Project Chariot . . December 1960 r Division of Biology and Medicine, AEC Washington, D. C. IT U S WEGWS LIBIA3"b This page intentionally left blank NUCLEAR EXPLOSIONS -PEACE UL APPLICATIONS . . BIOLOGY AND MEDICINE BIOENVIRONMENTAL FEATURES OF THE OGOTORUK CREEK AREA . . CAPE THOMPSON, ALASKA A F i r s t Sumnary The C o d t t e e on E n v i r o n m e

  9. NNSA Highly Enriched Uranium Removal Featured on The Rachel Maddow Show |

    Office of Environmental Management (EM)

    Department of Energy Highly Enriched Uranium Removal Featured on The Rachel Maddow Show NNSA Highly Enriched Uranium Removal Featured on The Rachel Maddow Show March 22, 2012 - 11:37am Addthis NNSA Administrator Thomas D’Agostino appeared live last night to break the news with Rachel Maddow that all remaining weapons-usable material has been successfully removed from Mexico. | Photo courtesy of the NNSA. NNSA Administrator Thomas D'Agostino appeared live last night to break the news

  10. New DOE Best Practices Manual Features Top Strategies for Carbon Storage

    Office of Environmental Management (EM)

    Wells | Department of Energy DOE Best Practices Manual Features Top Strategies for Carbon Storage Wells New DOE Best Practices Manual Features Top Strategies for Carbon Storage Wells June 7, 2012 - 1:00pm Addthis Washington, DC - Best practices for managing wells used to store carbon dioxide (CO2) in geologic formations are the focus of a publication just released by the U.S. Department of Energy (DOE)'s National Energy Technology Laboratory (NETL). The newest manual in the Department's

  11. Day Three of 2012 ARPA-E Summit Will Feature President Bill Clinton, ARPA-E

    Office of Environmental Management (EM)

    Director Majumdar, and America's Top Energy Thought Leaders | Department of Energy Three of 2012 ARPA-E Summit Will Feature President Bill Clinton, ARPA-E Director Majumdar, and America's Top Energy Thought Leaders Day Three of 2012 ARPA-E Summit Will Feature President Bill Clinton, ARPA-E Director Majumdar, and America's Top Energy Thought Leaders February 29, 2012 - 6:59am Addthis Washington D.C. - This week, the Advanced Research Projects Agency - Energy (ARPA-E) is hosting its third

  12. Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and

    Office of Environmental Management (EM)

    America's Top Energy Thought Leaders | Department of Energy Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and America's Top Energy Thought Leaders Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and America's Top Energy Thought Leaders February 28, 2012 - 7:02am Addthis Washington D.C. - This week, the Advanced Research Projects Agency - Energy (ARPA-E) is hosting its third annual Energy Innovation Summit, which is designed to unite key players from

  13. Feature-based Analysis of Plasma-based Particle Acceleration Data

    SciTech Connect (OSTI)

    Ruebel, Oliver; Geddes, Cameron G.R.; Chen, Min; Cormier-Michel, Estelle; Bethel, E. Wes

    2013-07-05

    Plasma-based particle accelerators can produce and sustain thousands of times stronger acceleration fields than conventional particle accelerators, providing a potential solution to the problem of the growing size and cost of conventional particle accelerators. To facilitate scientific knowledge discovery from the ever growing collections of accelerator simulation data generated by accelerator physicists to investigate next-generation plasma-based particle accelerator designs, we describe a novel approach for automatic detection and classification of particle beams and beam substructures due to temporal differences in the acceleration process, here called acceleration features. The automatic feature detection in combination with a novel visualization tool for fast, intuitive, query-based exploration of acceleration features enables an effective top-down data exploration process, starting from a high-level, feature-based view down to the level of individual particles. We describe the application of our analysis in practice to analyze simulations of single pulse and dual and triple colliding pulse accelerator designs, and to study the formation and evolution of particle beams, to compare substructures of a beam and to investigate transverse particle loss.

  14. Dynamic-Feature Extraction, Attribution and Reconstruction (DEAR) Method for Power System Model Reduction

    SciTech Connect (OSTI)

    Wang, Shaobu; Lu, Shuai; Zhou, Ning; Lin, Guang; Elizondo, Marcelo A.; Pai, M. A.

    2014-09-04

    In interconnected power systems, dynamic model reduction can be applied on generators outside the area of interest to mitigate the computational cost with transient stability studies. This paper presents an approach of deriving the reduced dynamic model of the external area based on dynamic response measurements, which comprises of three steps, dynamic-feature extraction, attribution and reconstruction (DEAR). In the DEAR approach, a feature extraction technique, such as singular value decomposition (SVD), is applied to the measured generator dynamics after a disturbance. Characteristic generators are then identified in the feature attribution step for matching the extracted dynamic features with the highest similarity, forming a suboptimal basis of system dynamics. In the reconstruction step, generator state variables such as rotor angles and voltage magnitudes are approximated with a linear combination of the characteristic generators, resulting in a quasi-nonlinear reduced model of the original external system. Network model is un-changed in the DEAR method. Tests on several IEEE standard systems show that the proposed method gets better reduction ratio and response errors than the traditional coherency aggregation methods.

  15. Method for photolithographic definition of recessed features on a semiconductor wafer utilizing auto-focusing alignment

    DOE Patents [OSTI]

    Farino, A.J.; Montague, S.; Sniegowski, J.J.; Smith, J.H.; McWhorter, P.J.

    1998-07-21

    A method is disclosed for photolithographically defining device features up to the resolution limit of an auto-focusing projection stepper when the device features are to be formed in a wafer cavity at a depth exceeding the depth of focus of the stepper. The method uses a focusing cavity located in a die field at the position of a focusing light beam from the auto-focusing projection stepper, with the focusing cavity being of the same depth as one or more adjacent cavities wherein a semiconductor device is to be formed. The focusing cavity provides a bottom surface for referencing the focusing light beam and focusing the stepper at a predetermined depth below the surface of the wafer, whereat the device features are to be defined. As material layers are deposited in each device cavity to build up a semiconductor structure such as a microelectromechanical system (MEMS) device, the same material layers are deposited in the focusing cavity, raising the bottom surface and re-focusing the stepper for accurately defining additional device features in each succeeding material layer. The method is especially applicable for forming MEMS devices within a cavity or trench and integrating the MEMS devices with electronic circuitry fabricated on the wafer surface. 15 figs.

  16. Method for photolithographic definition of recessed features on a semiconductor wafer utilizing auto-focusing alignment

    DOE Patents [OSTI]

    Farino, Anthony J. (Albuquerque, NM); Montague, Stephen (Albuquerque, NM); Sniegowski, Jeffry J. (Albuquerque, NM); Smith, James H. (Albuquerque, NM); McWhorter, Paul J. (Albuquerque, NM)

    1998-01-01

    A method is disclosed for photolithographically defining device features up to the resolution limit of an auto-focusing projection stepper when the device features are to be formed in a wafer cavity at a depth exceeding the depth of focus of the stepper. The method uses a focusing cavity located in a die field at the position of a focusing light beam from the auto-focusing projection stepper, with the focusing cavity being of the same depth as one or more adjacent cavities wherein a semiconductor device is to be formed. The focusing cavity provides a bottom surface for referencing the focusing light beam and focusing the stepper at a predetermined depth below the surface of the wafer, whereat the device features are to be defined. As material layers are deposited in each device cavity to build up a semiconductor structure such as a microelectromechanical system (MEMS) device, the same material layers are deposited in the focusing cavity, raising the bottom surface and re-focusing the stepper for accurately defining additional device features in each succeeding material layer. The method is especially applicable for forming MEMS devices within a cavity or trench and integrating the MEMS devices with electronic circuitry fabricated on the wafer surface.

  17. Industry Feature Archives | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Industry Feature Archives Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities User Facilities Accessing ASCR Facilities Innovative & Novel Computational Impact on Theory & Experiement (INCITE) ASCR Leadership Computing Challenge (ALCC) Industrial Users Computational Science Graduate Fellowship (CSGF) Research & Evaluation Prototypes (REP) Science Highlights Benefits of ASCR Funding Opportunities Advanced Scientific Computing Advisory Committee (ASCAC)

  18. Design Features and Technology Uncertainties for the Next Generation Nuclear Plant

    SciTech Connect (OSTI)

    John M. Ryskamp; Phil Hildebrandt; Osamu Baba; Ron Ballinger; Robert Brodsky; Hans-Wolfgang Chi; Dennis Crutchfield; Herb Estrada; Jeane-Claude Garnier; Gerald Gordon; Richard Hobbins; Dan Keuter; Marilyn Kray; Philippe Martin; Steve Melancon; Christian Simon; Henry Stone; Robert Varrin; Werner von Lensa

    2004-06-01

    This report presents the conclusions, observations, and recommendations of the Independent Technology Review Group (ITRG) regarding design features and important technology uncertainties associated with very-high-temperature nuclear system concepts for the Next Generation Nuclear Plant (NGNP). The ITRG performed its reviews during the period November 2003 through April 2004.

  19. Safety Functions and Other Features of Remotely Operated Weapon Systems (ROWS)

    Energy Savers [EERE]

    DOE-STD-1047-2008 August 2008 DOE STANDARD Safety Functions and Other Features of Remotely Operated Weapon Systems (ROWS) U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE DOE-STD-1047-2008 TABLE OF CONTENTS FOREWORD ....................................................................................................................... i 1. SCOPE AND PURPOSE

  20. NNSA Launches Second Travel Blog to Feature Administrator's Work at Next

    National Nuclear Security Administration (NNSA)

    Generation Safeguards Meeting in Japan | National Nuclear Security Administration Second Travel Blog to Feature Administrator's Work at Next Generation Safeguards Meeting in Japan | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our

  1. Feature test report for the Small Debris Collection and Packaging System

    SciTech Connect (OSTI)

    Brisbin, S.A.

    1995-03-17

    The Spent Nuclear Fuel Equipment Engineering group performed feature testing of the Small Debris Collection and Packaging System (SDCPS) in the 305 Cold Test Facility from January 30, 1995, to February 1, 1995. Feature testing of the Small Debris Collection and Packaging System (SDCPS) was performed for the following reasons: To assess the feasibility of using ``drop-out`` vessels to collect small debris (<2.5 cm) in MK-II fuel canisters while transferring sludge to the Weasel Pit. To evaluate system performance under conditions similar to those in the K-Basins (e.g. submerged under 4.9 meters of water and operated with long handled tools) while using a surrogate sludge mixed with debris. To determine if canister weight could be used to predict the volume of sludge and/or debris contained within the canisters during system operation.

  2. SDSS/SEGUE spectral feature analysis for stellar atmospheric parameter estimation

    SciTech Connect (OSTI)

    Li, Xiangru; Lu, Yu; Yang, Tan; Wang, Yongjun; Wu, Q. M. Jonathan; Luo, Ali; Zhao, Yongheng; Zuo, Fang

    2014-08-01

    Large-scale and deep sky survey missions are rapidly collecting a large amount of stellar spectra, which necessitate the estimation of atmospheric parameters directly from spectra and make it feasible to statistically investigate latent principles in a large data set. We present a technique for estimating parameters T{sub eff}, log g, and [Fe/H] from stellar spectra. With this technique, we first extract features from stellar spectra using the LASSO algorithm; then, the parameters are estimated from the extracted features using the support vector regression. On a subsample of 20,000 stellar spectra from the Sloan Digital Sky Survey (SDSS) with reference parameters provided by the SDSS/SEGUE Spectroscopic Parameter Pipeline, estimation consistency are 0.007458 dex for log T{sub eff} (101.609921 K for T{sub eff}), 0.189557 dex for log g, and 0.182060 for [Fe/H], where the consistency is evaluated by mean absolute error. Prominent characteristics of the proposed scheme are sparseness, locality, and physical interpretability. In this work, each spectrum consists of 3821 fluxes, and 10, 19, and 14 typical wavelength positions are detected, respectively, for estimating T{sub eff}, log g, and [Fe/H]. It is shown that the positions are related to typical lines of stellar spectra. This characteristic is important in investigating physical indications from analysis results. Then, stellar spectra can be described by the individual fluxes on the detected positions (PD) or local integration of fluxes near them (LI). The aforementioned consistency is the result based on features described by LI. If features are described by PD, consistency is 0.009092 dex for log T{sub eff} (124.545075 K for T{sub eff}), 0.198928 dex for log g, and 0.206814 dex for [Fe/H].

  3. Key features of the Talspeak and similar trivalent actinide-lanthanide partitioning processes

    SciTech Connect (OSTI)

    Nash, Kenneth L.

    2008-07-01

    As closing of the nuclear-fuel cycle via the suite of UREX processes under development in the U.S. progresses, the Trivalent Actinide-Lanthanide Separation by Phosphorus Extractants and Aqueous Komplexants (TALSPEAK) process has been selected as the baseline process for partition of trivalent actinides away from fission-product lanthanides. In this report, selected features of the chemistry of the TALSPEAK process and the limited parallel information on other TALSPEAK-like processes are discussed. (author)

  4. Sandia Research to Be Featured on Upcoming Cover of Journal of Physical

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

    Chemistry B to Be Featured on Upcoming Cover of Journal of Physical Chemistry B - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing

  5. RSF Workshop Session I: Energy Goals and Features of the RSF

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

    I: Energy Goals and Features of the RSF Moderator: Bill Glover Panelists: Tom Hootman John Andary Shanti Pless ARCHITECTURAL PERSPECTIVE Tom Hootman, AIA, LEED AP BD+C RNL, Director of Sustainability ARCHITECTURE +ENERGY ARCHITECTURE +SUSTAINABILITY STRATEGIES RESULTS APPROACH CLIMATE PROGRAM SITE 60 FEET Research Support Facility Campus Site Plan n FTLB SERF S+TF Visitors Center n Floor Plans Level 1 Level 2 Level 3 Level 4 ENERGY +FORM RSF Evil Twin vs. 60' Wide Wings 150' Wide FOOTPRINT

  6. Joint BioEnergy Institute Oxime-NIMS Work Featured on the Cover of ACS

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

    Chemical Biology Oxime-NIMS Work Featured on the Cover of ACS Chemical Biology - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing

  7. Joint Sandia/University of Texas-Austin Research Featured on the Cover of

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

    Journal of Physical Chemistry C Sandia/University of Texas-Austin Research Featured on the Cover of Journal of Physical Chemistry C - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power

  8. Web Feature Nuclear Stewardship: Lessons from a Not-So-Remote Island

    Office of Legacy Management (LM)

    Geotimes - March 2002 - Amchitka Island Yage 1 ot 6 Web Feature Nuclear Stewardship: Lessons from a Not-So-Remote Island John Eichelberger, Jeff Freymueller. Graham Hill and Matt Patrick The authors' work at Amchitka is part of a program of independent risk assessment of U.S. Department of Energy (DOE) sites funded by DOE and managed by the Consortium for Risk Assessment for Stakeholder Participation (CRESPII). The views expressed here are our own, with the intent to stimulate constructive

  9. Micro-Grooving and Micro-Threading Tools for Fabricating Curvilinear Features

    SciTech Connect (OSTI)

    ADAMS,DAVID P.; VASILE,MICHAEL J.; KRISHNAN,A.S.M.

    2000-07-24

    This paper presents techniques for fabricating microscopic, curvilinear features in a variety of workpiece materials. Micro-grooving and micro-threading tools having cutting widths as small as 13 {micro}m are made by focused ion beam sputtering and used for ultra-precision machining. Tool fabrication involves directing a 20 keV gallium beam at polished cylindrical punches made of cobalt M42 high-speed steel or C2 tungsten carbide to create a number of critically aligned facets. Sputtering produces rake facets of desired angle and cutting edges having radii of curvature equal to 0.4 {micro}m. Clearance for minimizing frictional drag of a tool results from a particular ion beam/target geometry that accounts for the sputter yield dependence on incidence angle. It is believed that geometrically specific cutting tools of this dimension have not been made previously. Numerically controlled, ultra-precision machining with micro-grooving tools results in a close match between tool width and feature size. Microtools are used to machine 13 {micro}m wide, 4 {micro}m deep, helical grooves in polymethyl methacrylate and 6061 Al cylindrical workplaces. Micro-grooving tools are also used to fabricate sinusoidal cross-section features in planar metal samples.

  10. SU-E-QI-17: Dependence of 3D/4D PET Quantitative Image Features On Noise

    SciTech Connect (OSTI)

    Oliver, J; Budzevich, M; Zhang, G; Latifi, K; Dilling, T; Balagurunathan, Y; Gu, Y; Grove, O; Feygelman, V; Gillies, R; Moros, E; Lee, H.

    2014-06-15

    Purpose: Quantitative imaging is a fast evolving discipline where a large number of features are extracted from images; i.e., radiomics. Some features have been shown to have diagnostic, prognostic and predictive value. However, they are sensitive to acquisition and processing factors; e.g., noise. In this study noise was added to positron emission tomography (PET) images to determine how features were affected by noise. Methods: Three levels of Gaussian noise were added to 8 lung cancer patients PET images acquired in 3D mode (static) and using respiratory tracking (4D); for the latter images from one of 10 phases were used. A total of 62 features: 14 shape, 19 intensity (1stO), 18 GLCM textures (2ndO; from grey level co-occurrence matrices) and 11 RLM textures (2ndO; from run-length matrices) features were extracted from segmented tumors. Dimensions of GLCM were 256256, calculated using 3D images with a step size of 1 voxel in 13 directions. Grey levels were binned into 256 levels for RLM and features were calculated in all 13 directions. Results: Feature variation generally increased with noise. Shape features were the most stable while RLM were the most unstable. Intensity and GLCM features performed well; the latter being more robust. The most stable 1stO features were compactness, maximum and minimum length, standard deviation, root-mean-squared, I30, V10-V90, and entropy. The most stable 2ndO features were entropy, sum-average, sum-entropy, difference-average, difference-variance, difference-entropy, information-correlation-2, short-run-emphasis, long-run-emphasis, and run-percentage. In general, features computed from images from one of the phases of 4D scans were more stable than from 3D scans. Conclusion: This study shows the need to characterize image features carefully before they are used in research and medical applications. It also shows that the performance of features, and thereby feature selection, may be assessed in part by noise analysis.

  11. Regenerative Energie Systeme RegEnSys | Open Energy Information

    Open Energy Info (EERE)

    Zip: 67227 Sector: Solar Product: Sale and installation of solar (thermal and PV) and ventilation systems. Coordinates: 51.131202, 14.106809 Show Map Loading map......

  12. Regeneratively cooled transition duct with transversely buffered impingement nozzles

    DOE Patents [OSTI]

    Morrison, Jay A; Lee, Ching-Pang; Crawford, Michael E

    2015-04-21

    A cooling arrangement (56) having: a duct (30) configured to receive hot gases (16) from a combustor; and a flow sleeve (50) surrounding the duct and defining a cooling plenum (52) there between, wherein the flow sleeve is configured to form impingement cooling jets (70) emanating from dimples (82) in the flow sleeve effective to predominately cool the duct in an impingement cooling zone (60), and wherein the flow sleeve defines a convection cooling zone (64) effective to cool the duct solely via a cross-flow (76), the cross-flow comprising cooling fluid (72) exhausting from the impingement cooling zone. In the impingement cooling zone an undimpled portion (84) of the flow sleeve tapers away from the duct as the undimpled portion nears the convection cooling zone. The flow sleeve is configured to effect a greater velocity of the cross-flow in the convection cooling zone than in the impingement cooling zone.

  13. Acoustic-velocity measurements in materials using a regenerative method

    DOE Patents [OSTI]

    Laine, E.F.

    1982-09-30

    Acoustic energy is propatated through earth material between an electro-acoustic generator and a receiver which converts the received acoustic energy into electrical signals. A closed loop is formed by a variable gain amplifier system connected between the receiver and the generator. The gain of the amplifier system is increased until sustained oscillations are produced in the closed loop. The frequency of the oscillations is measured as an indication of the acoustic propagation velocity through the earth material. The amplifier gain is measured as an indication of the acoustic attenuation through the earth materials. The method is also applicable to the non-destructive testing of structural materials, such as steel, aluminum and concrete.

  14. Energy-efficient regenerative liquid desiccant drying process

    DOE Patents [OSTI]

    Ko, Suk M. (Huntsville, AL); Grodzka, Philomena G. (Huntsville, AL); McCormick, Paul O. (Athens, AL)

    1980-01-01

    This invention relates to the use of desiccants in conjunction with an open oop drying cycle and a closed loop drying cycle to reclaim the energy expended in vaporizing moisture in harvested crops. In the closed loop cycle, the drying air is brought into contact with a desiccant after it exits the crop drying bin. Water vapor in the moist air is absorbed by the desiccant, thus reducing the relative humidity of the air. The air is then heated by the used desiccant and returned to the crop bin. During the open loop drying cycle the used desiccant is heated (either fossil or solar energy heat sources may be used) and regenerated at high temperature, driving water vapor from the desiccant. This water vapor is condensed and used to preheat the dilute (wet) desiccant before heat is added from the external source (fossil or solar). The latent heat of vaporization of the moisture removed from the desiccant is reclaimed in this manner. The sensible heat of the regenerated desiccant is utilized in the open loop drying cycle. Also, closed cycle operation implies that no net energy is expended in heating drying air.

  15. USDA Awards Nearly $2 Million for First Phase of Regenerative...

    Energy Savers [EERE]

    In April 2015, Pine Ridge Indian Reservation was one of eight newly designated Promise Zones by the Obama Administration. Promise Zones are high-poverty communities where the ...

  16. Acoustic velocity measurements in materials using a regenerative method

    DOE Patents [OSTI]

    Laine, Edwin F. (Alamo, CA)

    1986-01-01

    Acoustic energy is propagated through earth material between an electro-acoustic generator and a receiver which converts the received acoustic energy into electrical signals. A closed loop is formed by a variable gain amplifier system connected between the receiver and the generator. The gain of the amplifier system is increased until sustained oscillations are produced in the closed loop. The frequency of the oscillations is measured as an indication of the acoustic propagation velocity through the earth material. The amplifier gain is measured as an indication of the acoustic attenuation through the earth materials. The method is also applicable to the non-destructive testing of structural materials, such as steel, aluminum and concrete.

  17. Fabrication of small-scale structures with non-planar features

    DOE Patents [OSTI]

    Burckel, David B.; Ten Eyck, Gregory A.

    2015-11-19

    The fabrication of small-scale structures is disclosed. A unit-cell of a small-scale structure with non-planar features is fabricated by forming a membrane on a suitable material. A pattern is formed in the membrane and a portion of the substrate underneath the membrane is removed to form a cavity. Resonators are then directionally deposited on the wall or sides of the cavity. The cavity may be rotated during deposition to form closed-loop resonators. The resonators may be non-planar. The unit-cells can be formed in a layer that includes an array of unit-cells.

  18. Evaluation of land ownership, lease status, and surface features in five geopressured geothermal prospects

    SciTech Connect (OSTI)

    Hackenbracht, W.N.

    1981-05-01

    This study was accomplished for the purpose of gathering information pertaining to land and lease ownership, surface features and use and relevant environmental factors in the Lake Theriot (West and East), Kaplan, Bayou Hebert and Freshwater Bayou geopressured geothermal prospects in Louisiana, and the Blessing geopressured geothermal prospect in Texas. This information and recommendations predicated upon it will then be used to augment engineering and geological data utilized to select geopressured geothermal test well sites within the prospects. The five geopressured geothermal prospects are briefly described and recommendations given.

  19. PPPL's Earth Week features Colloquium on NYC green plan, cleanup and

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

    awards | Princeton Plasma Physics Lab PPPL's Earth Week features Colloquium on NYC green plan, cleanup and awards By Jeanne Jackson DeVoe April 28, 2014 Tweet Widget Google Plus One Share on Facebook Volunteers clean up the area outside PPPL's Lyman Spitzer Building during the Earth Day cleanup at PPPL on April 22. From left to right: Virginia Finley, Julia Toth, Bill Davis, Glenn Anderson and Shannon Greco. (Photo by Elle Starkman/PPPL Office of Communications) Volunteers clean up the area

  20. Consumer attitudes concerning construction features of an earth-sheltered dwelling

    SciTech Connect (OSTI)

    McKown, C. (Texas Tech Univ., Lubbock); Stewart, K.K.

    1980-01-01

    Consumer responses to construction features of earth-sheltered houses were collected from a volunteer sampling of visitors to an ''open house'' in South Carolina. Consumers reported they had not expected the exposed-front elevation, that skylights are needed in some of the darker areas, and that they were favorably impressed with the solar heating for space and water, the energy efficiency, and the low cost of construction and utilities. Savings of $3000 in initial costs and $300 in annual utility costs were specified as requirements for purchase by the majority. Responses were generally favorable, although only five percent had visted an earth-insulated or underground home before.

  1. Weighted simultaneous algebraic reconstruction technique for tomosynthesis imaging of objects with high-attenuation features

    SciTech Connect (OSTI)

    Levakhina, Y. M.; Mueller, J.; Buzug, T. M.; Duschka, R. L.; Vogt, F.; Barkhausen, J.

    2013-03-15

    Purpose: This paper introduces a nonlinear weighting scheme into the backprojection operation within the simultaneous algebraic reconstruction technique (SART). It is designed for tomosynthesis imaging of objects with high-attenuation features in order to reduce limited angle artifacts. Methods: The algorithm estimates which projections potentially produce artifacts in a voxel. The contribution of those projections into the updating term is reduced. In order to identify those projections automatically, a four-dimensional backprojected space representation is used. Weighting coefficients are calculated based on a dissimilarity measure, evaluated in this space. For each combination of an angular view direction and a voxel position an individual weighting coefficient for the updating term is calculated. Results: The feasibility of the proposed approach is shown based on reconstructions of the following real three-dimensional tomosynthesis datasets: a mammography quality phantom, an apple with metal needles, a dried finger bone in water, and a human hand. Datasets have been acquired with a Siemens Mammomat Inspiration tomosynthesis device and reconstructed using SART with and without suggested weighting. Out-of-focus artifacts are described using line profiles and measured using standard deviation (STD) in the plane and below the plane which contains artifact-causing features. Artifacts distribution in axial direction is measured using an artifact spread function (ASF). The volumes reconstructed with the weighting scheme demonstrate the reduction of out-of-focus artifacts, lower STD (meaning reduction of artifacts), and narrower ASF compared to nonweighted SART reconstruction. It is achieved successfully for different kinds of structures: point-like structures such as phantom features, long structures such as metal needles, and fine structures such as trabecular bone structures. Conclusions: Results indicate the feasibility of the proposed algorithm to reduce typical tomosynthesis artifacts produced by high-attenuation features. The proposed algorithm assigns weighting coefficients automatically and no segmentation or tissue-classification steps are required. The algorithm can be included into various iterative reconstruction algorithms with an additive updating strategy. It can also be extended to computed tomography case with the complete set of angular data.

  2. Polarization controlled deep sub-wavelength periodic features written by femtosecond laser on nanodiamond thin film surface

    SciTech Connect (OSTI)

    Kumar Kuntumalla, Mohan; Srikanth, Vadali V. S. S.; Rajamudili, Kuladeep; Rao Desai, Narayana

    2014-04-21

    Deep sub-wavelength (?/??=??0.22) periodic features are induced uniformly on a nanodiamond (ND) thin film surface using femtosecond (fs) laser irradiation (pulse duration?=??110 fs and central wavelength of ?800?nm). The topography of the surface features is controlled by the laser polarization. Orientation of features is perpendicular to laser polarization. Periodicity (spatial periodicity of?features is less than the laser wavelength. This work gives an experimental proof of polarization controlled surface plasmon-fs laser coupling mechanism prompting the interaction between fs laser and solid matter (here ND thin film) which in turn is resulting in the periodic surface features. Scanning electron microscopy in conjunction with micro Raman scattering, X-ray diffraction, and atomic force microscopy are carried out to extract surface morphology and phase information of the laser irradiated regions. This work demonstrates an easy and efficient surface fabrication technique.

  3. Dynamic impact and pressure analysis of the insensitive munitions container PA103 with modified design features

    SciTech Connect (OSTI)

    Handy, K.D.

    1993-06-01

    This report presents analytical analyses of the insensitive munitions container PA103, with modified design features for a static internal pressure of 500 psi and for a dynamic impact resulting from a 7-ft free fall onto a rigid surface. The modified design features addressed by the analyses were the inclusion of a score pattern on the container cylindrical body and a plastic plate (fuse) sandwiched between metal flanges on the container end. The objectives of both the pressure and impact analyses were to determine if the induced stresses at the score patterns in the cylindrical body of the container were sufficient to induce failure. Analytical responses of the container to the imposed loads were obtained with finite element analysis methodology. The computer codes ABAQUS and VEC/DYNA3D were used to obtain the results. Results of the pressure analysis indicate that failure of the container body would be expected to occur at the score pattern for a static internal pressure of 500 psi. Also, results from three impact orientations for a 7-ft drop indicate that membrane stresses in the vicinity of the score pattern are above critical crack growth stress magnitudes, especially at low ([minus]60[degrees]F) temperatures.

  4. Dynamic impact and pressure analysis of the insensitive munitions container PA103 with modified design features

    SciTech Connect (OSTI)

    Handy, K.D.

    1993-06-01

    This report presents analytical analyses of the insensitive munitions container PA103, with modified design features for a static internal pressure of 500 psi and for a dynamic impact resulting from a 7-ft free fall onto a rigid surface. The modified design features addressed by the analyses were the inclusion of a score pattern on the container cylindrical body and a plastic plate (fuse) sandwiched between metal flanges on the container end. The objectives of both the pressure and impact analyses were to determine if the induced stresses at the score patterns in the cylindrical body of the container were sufficient to induce failure. Analytical responses of the container to the imposed loads were obtained with finite element analysis methodology. The computer codes ABAQUS and VEC/DYNA3D were used to obtain the results. Results of the pressure analysis indicate that failure of the container body would be expected to occur at the score pattern for a static internal pressure of 500 psi. Also, results from three impact orientations for a 7-ft drop indicate that membrane stresses in the vicinity of the score pattern are above critical crack growth stress magnitudes, especially at low ({minus}60{degrees}F) temperatures.

  5. WE-D-BRD-01: Innovation in Radiation Therapy Delivery: Advanced Digital Linac Features

    SciTech Connect (OSTI)

    Xing, L; Wong, J; Li, R

    2014-06-15

    Last few years has witnessed significant advances in linac technology and therapeutic dose delivery method. Digital linacs equipped with high dose rate FFF beams have been clinically implemented in a number of hospitals. Gated VMAT is becoming increasingly popular in treating tumors affected by respiratory motion. This session is devoted to update the audience with these technical advances and to present our experience in clinically implementing the new linacs and dose delivery methods. Topics to be covered include, technical features of new generation of linacs from different vendors, dosimetric characteristics and clinical need for FFF-beam based IMRT and VMAT, respiration-gated VMAT, the concept and implementation of station parameter optimized radiation therapy (SPORT), beam level imaging and onboard image guidance tools. Emphasis will be on providing fundamental understanding of the new treatment delivery and image guidance strategies, control systems, and the associated dosimetric characteristics. Commissioning and acceptance experience on these new treatment delivery technologies will be reported. Clinical experience and challenges encountered during the process of implementation of the new treatment techniques and future applications of the systems will also be highlighted. Learning Objectives: Present background knowledge of emerging digital linacs and summarize their key geometric and dosimetric features. SPORT as an emerging radiation therapy modality specifically designed to take advantage of digital linacs. Discuss issues related to the acceptance and commissioning of the digital linacs and FFF beams. Describe clinical utility of the new generation of digital linacs and their future applications.

  6. RELAP5-3D Code Includes Athena Features and Models

    SciTech Connect (OSTI)

    Richard A. Riemke; Cliff B. Davis; Richard R. Schultz

    2006-07-01

    Version 2.3 of the RELAP5-3D computer program includes all features and models previously available only in the ATHENA version of the code. These include the addition of new working fluids (i.e., ammonia, blood, carbon dioxide, glycerol, helium, hydrogen, lead-bismuth, lithium, lithium-lead, nitrogen, potassium, sodium, and sodium-potassium) and a magnetohydrodynamic model that expands the capability of the code to model many more thermal-hydraulic systems. In addition to the new working fluids along with the standard working fluid water, one or more noncondensable gases (e.g., air, argon, carbon dioxide, carbon monoxide, helium, hydrogen, krypton, nitrogen, oxygen, sf6, xenon) can be specified as part of the vapor/gas phase of the working fluid. These noncondensable gases were in previous versions of RELAP5- 3D. Recently four molten salts have been added as working fluids to RELAP5-3D Version 2.4, which has had limited release. These molten salts will be in RELAP5-3D Version 2.5, which will have a general release like RELAP5-3D Version 2.3. Applications that use these new features and models are discussed in this paper.

  7. Special features of the alpha induced d and polarized d breakup

    SciTech Connect (OSTI)

    Lambert, J.M.; Treado, P.A.; Koike, Y.; Slaus, I.; Correll, F.D.; Brown, R.E.; Hardekopf, R.A.; Jarmie, N.

    1982-01-01

    The alpha induced deuteron breakup reactions have been of interest since the three-nucleon, nucleon induced deuteron breakup, problem was addressed with tractable and predictive codes based on the Faddeev formalism and with appropriate nucleon-nucleon forces. In this paper we discuss a few special features of the alpha induced deuteron breakup reactions. Specifically, we point out the importance of the n-p tensor force in the predictions of the three-body model that fit the tensor analyzing powers better and the concommittent deterioration of the fit to the vector analyzing power caused by the inclusion of the tensor force. We suggest that there exists evidence for the /sup 1/S/sub 0/ n-p interaction, which is isospin forbidden, in both the cross section and spin observables data. Finally, we discuss certain characteristics of the p-..cap alpha.. quasifree-scattering and n-..cap alpha.. final-state-interaction processes.

  8. AFREET: HUMAN-INSPIRED SPATIO-SPECTRAL FEATURE CONSTRUCTION FOR IMAGE CLASSIFICATION WITH SUPPORT VECTOR MACHINES

    SciTech Connect (OSTI)

    S. PERKINS; N. HARVEY

    2001-02-01

    The authors examine the task of pixel-by-pixel classification of the multispectral and grayscale images typically found in remote-sensing and medical applications. Simple machine learning techniques have long been applied to remote-sensed image classification, but almost always using purely spectral information about each pixel. Humans can often outperform these systems, and make extensive use of spatial context to make classification decisions. They present AFREET: an SVM-based learning system which attempts to automatically construct and refine spatio-spectral features in a somewhat human-inspired fashion. Comparisons with traditionally used machine learning techniques show that AFREET achieves significantly higher performance. The use of spatial context is particularly useful for medical imagery, where multispectral images are still rare.

  9. Distinctive microstructural features of aged sodium silicate-activated slag concretes

    SciTech Connect (OSTI)

    San Nicolas, Rackel; Bernal, Susan A.; Meja de Gutirrez, Ruby; Deventer, Jannie S.J. van; Provis, John L.

    2014-11-15

    Electron microscopic characterisation of 7-year old alkali-activated blast-furnace slag concretes enabled the identification of distinct microstructural features, providing insight into the mechanisms by which these materials evolve over time. Backscattered electron images show the formation of Liesegang-type ring formations, suggesting that the reaction at advanced age is likely to follow an Oswald supersaturationnucleationdepletion cycle. Segregation of Ca-rich veins, related to the formation of Ca(OH){sub 2}, is observed in microcracked regions due to the ongoing reaction between the pore solution and available calcium from remnant slag grains. A highly dense and uniform interfacial transition zone is identified between siliceous aggregate particles and the alkali activated slag binders, across the concretes assessed. Alkali-activated slag concretes retain a highly dense and stable microstructure at advanced ages, where any microcracks induced at early ages seem to be partially closing, and the remnant slag grains continue reacting.

  10. Highly featured amorphous silicon nanorod arrays for high-performance lithium-ion batteries

    SciTech Connect (OSTI)

    Soleimani-Amiri, Samaneh; Safiabadi Tali, Seied Ali; Azimi, Soheil; Sanaee, Zeinab; Mohajerzadeh, Shamsoddin

    2014-11-10

    High aspect-ratio vertical structures of amorphous silicon have been realized using hydrogen-assisted low-density plasma reactive ion etching. Amorphous silicon layers with the thicknesses ranging from 0.5 to 10??m were deposited using radio frequency plasma enhanced chemical vapor deposition technique. Standard photolithography and nanosphere colloidal lithography were employed to realize ultra-small features of the amorphous silicon. The performance of the patterned amorphous silicon structures as a lithium-ion battery electrode was investigated using galvanostatic charge-discharge tests. The patterned structures showed a superior Li-ion battery performance compared to planar amorphous silicon. Such structures are suitable for high current Li-ion battery applications such as electric vehicles.

  11. Acoustic Longitudinal Field NIF Optic Feature Detection Map Using Time-Reversal & MUSIC

    SciTech Connect (OSTI)

    Lehman, S K

    2006-02-09

    We developed an ultrasonic longitudinal field time-reversal and MUltiple SIgnal Classification (MUSIC) based detection algorithm for identifying and mapping flaws in fused silica NIF optics. The algorithm requires a fully multistatic data set, that is one with multiple, independently operated, spatially diverse transducers, each transmitter of which, in succession, launches a pulse into the optic and the scattered signal measured and recorded at every receiver. We have successfully localized engineered ''defects'' larger than 1 mm in an optic. We confirmed detection and localization of 3 mm and 5 mm features in experimental data, and a 0.5 mm in simulated data with sufficiently high signal-to-noise ratio. We present the theory, experimental results, and simulated results.

  12. Influence of hot spot features on the initiation characteristics of heterogeneous nitromethane

    SciTech Connect (OSTI)

    Dattelbaum, Dana M; Sheffield, Stephen A; Stahl, David B; Dattelbaum, Andrew M; Engelke, Ray

    2010-01-01

    To gain insights into the critical hot spot features influencing energetic materials initiation characteristics, well-defined micron-scale particles have been intentionally introduced into the homogeneous explosive nitromethane (NM). Two types of potential hot spot origins have been examined - shock impedance mismatches using solid silica beads, and porosity using hollow microballoons - as well as their sizes and inter-particle separations. Here, we present the results of several series of gas gun-driven plate impact experiments on NM/particle mixtures with well-controlled shock inputs. Detailed insights into the nature of the reactive flow during the build-up to detonation have been obtained from the response of in-situ electromagnetic gauges, and the data have been used to establish Pop-plots (run-distance-to-detonation vs. shock input pressure) for the mixtures. Comparisons of sensitization effects and energy release characteristics relative to the initial shock front between the solid and hollow beads are presented.

  13. RW Aur A FROM THE X-WIND POINT OF VIEW: GENERAL FEATURES

    SciTech Connect (OSTI)

    Liu, Chun-Fan; Shang, Hsien

    2012-12-20

    In this paper, the RW Aur A microjet is studied from the point of view of X-wind models. The archived Hubble Space Telescope/STIS spectra of the optical forbidden lines [O I], [S II], and [N II] from RW Aur A, taken in Cycle 8 with seven parallel slits along the jet axis, spaced at 0.''07 apart, were analyzed. Images, position-velocity diagrams, and line ratios among the species were constructed, and compared with synthetic observations generated by selected solutions of the X-wind. Prominent features arising in a steady-state X-wind could be identified within the convolved images and position-velocity diagrams, including FWHM and high-velocity peaks on both of the redshifted and blueshifted jets. The well-known asymmetric velocity profiles of the opposite jets were built into the selected models. We discuss model selections within the existing uncertainties of the stellar parameters and inclination angle of the system. In this framework, the mass-loss rates that were inferred to be decreasing along the jet axis in the literature are the results of slowly decreasing excitation conditions and electron density profiles. Despite the apparent asymmetry in the terminal velocities, line intensities and mass-loss rates, the average linear momenta from the opposite sides of the jet are actually balanced. These previously hard-to-explain features of the asymmetric RW Aur A jet system can now be interpreted in a different but self-consistent manner within the X-wind framework.

  14. The AP1000{sup R} nuclear power plant innovative features for extended station blackout mitigation

    SciTech Connect (OSTI)

    Vereb, F.; Winters, J.; Schulz, T.; Cummins, E.; Oriani, L. [Westinghouse Electric Company LLC, 1000 Westinghouse Drive, Cranberry Township, PA 16066 (United States)

    2012-07-01

    Station Blackout (SBO) is defined as 'a condition wherein a nuclear power plant sustains a loss of all offsite electric power system concurrent with turbine trip and unavailability of all onsite emergency alternating current (AC) power system. Station blackout does not include the loss of available AC power to buses fed by station batteries through inverters or by alternate AC sources as defined in this section, nor does it assume a concurrent single failure or design basis accident...' in accordance with Reference 1. In this paper, the innovative features of the AP1000 plant design are described with their operation in the scenario of an extended station blackout event. General operation of the passive safety systems are described as well as the unique features which allow the AP1000 plant to cope for at least 7 days during station blackout. Points of emphasis will include: - Passive safety system operation during SBO - 'Fail-safe' nature of key passive safety system valves; automatically places the valve in a conservatively safe alignment even in case of multiple failures in all power supply systems, including normal AC and battery backup - Passive Spent Fuel Pool cooling and makeup water supply during SBO - Robustness of AP1000 plant due to the location of key systems, structures and components required for Safe Shutdown - Diverse means of supplying makeup water to the Passive Containment Cooling System (PCS) and the Spent Fuel Pool (SFP) through use of an engineered, safety-related piping interface and portable equipment, as well as with permanently installed onsite ancillary equipment. (authors)

  15. Detailed Hydrographic Feature Extraction from High-Resolution LiDAR Data

    SciTech Connect (OSTI)

    Danny L. Anderson

    2012-05-01

    Detailed hydrographic feature extraction from high-resolution light detection and ranging (LiDAR) data is investigated. Methods for quantitatively evaluating and comparing such extractions are presented, including the use of sinuosity and longitudinal root-mean-square-error (LRMSE). These metrics are then used to quantitatively compare stream networks in two studies. The first study examines the effect of raster cell size on watershed boundaries and stream networks delineated from LiDAR-derived digital elevation models (DEMs). The study confirmed that, with the greatly increased resolution of LiDAR data, smaller cell sizes generally yielded better stream network delineations, based on sinuosity and LRMSE. The second study demonstrates a new method of delineating a stream directly from LiDAR point clouds, without the intermediate step of deriving a DEM. Direct use of LiDAR point clouds could improve efficiency and accuracy of hydrographic feature extractions. The direct delineation method developed herein and termed mDn, is an extension of the D8 method that has been used for several decades with gridded raster data. The method divides the region around a starting point into sectors, using the LiDAR data points within each sector to determine an average slope, and selecting the sector with the greatest downward slope to determine the direction of flow. An mDn delineation was compared with a traditional grid-based delineation, using TauDEM, and other readily available, common stream data sets. Although, the TauDEM delineation yielded a sinuosity that more closely matches the reference, the mDn delineation yielded a sinuosity that was higher than either the TauDEM method or the existing published stream delineations. Furthermore, stream delineation using the mDn method yielded the smallest LRMSE.

  16. Combined features in the primordial spectra induced by a sudden turn in two-field DBI inflation

    SciTech Connect (OSTI)

    Mizuno, Shuntaro; Saito, Ryo; Langlois, David E-mail: rsaito@apc.univ-paris7.fr

    2014-11-01

    We investigate the features generated by a sharp turn along the inflationary trajectory in a two-field model of Dirac-Born-Infeld inflation, where one of the fields is heavy. Distinct features are generated by two different effects: the mixing of the light and heavy modes during the turn, on the one hand, and the resonance between the oscillations along the heavy direction after the turn, on the other hand. Contrary to models with standard kinetic terms, the resonance effect is not strongly suppressed because the action contains derivative interactions. Working in the potential basis, we study the oscillations after the turn and compute the amplitude of the mixing and resonance features in the power spectrum, as well as in the bispectrum for the latter effect. We find that the amplitudes and positions of these combined features obey specific consistency relations, which could be confronted with cosmological data.

  17. Microdevice having interior cavity with high aspect ratio surface features and associated methods of manufacture and use

    DOE Patents [OSTI]

    Morales, Alfredo M. (Pleasanton, CA)

    2002-01-01

    A microdevice having interior cavity with high aspect ratio features and ultrasmooth surfaces, and associated method of manufacture and use is described. An LIGA-produced shaped bit is used to contour polish the surface of a sacrificial mandrel. The contoured sacrificial mandrel is subsequently coated with a structural material and the mandrel removed to produce microdevices having micrometer-sized surface features and sub-micrometer RMS surface roughness.

  18. Potentially disruptive hydrologic features, events and processes at the Yucca Mountain Site, Nevada

    SciTech Connect (OSTI)

    Hoxie, D.T.

    1995-04-01

    Yucca Mountain, Nevada, has been selected by the United States to be evaluated as a potential site for the development of a geologic repository for the disposal of spent nuclear fuel and high-level radioactive waste. If the site is determined to be suitable for repository development and construction is authorized, the repository at the Yucca Mountain site is planned to be constructed in unsaturated tuff at a depth of about 250 meters below land surface and at a distance of about 250 meters above the water table. The intent of locating a repository in a thick unsaturated-zone geohydrologic setting, such as occurs at Yucca Mountain under the arid to semi-arid climatic conditions that currently prevail in the region, is to provide a natural setting for the repository system in which little ground water will be available to contact emplaced waste or to transport radioactive material from the repository to the biosphere. In principle, an unsaturated-zone repository will be vulnerable to water entry from both above and below. Consequently, a major effort within the site-characterization program at the Yucca Mountain site is concerned with identifying and evaluating those features, events, and processes, such as increased net infiltration or water-table rise, whose presence or future occurrence could introduce water into a potential repository at the site in quantities sufficient to compromise the waste-isolation capability of the repository system.

  19. Specific features of the behaviour of targets under negative pressures created by a picosecond laser pulse

    SciTech Connect (OSTI)

    Abrosimov, S A; Bazhulin, A P; Voronov, Valerii V; Geras'kin, A A; Krasyuk, Igor K; Pashinin, Pavel P; Semenov, Andrei Yu; Stuchebryukhov, I A; Khishchenko, K V; Fortov, Vladimir E

    2013-03-31

    New experimental data are obtained concerning the character of spallation and the mechanical strength of targets made of aluminium, aluminium - magnesium alloy (AMg6M), polymethylmethacrylate (PMMA, plexiglass), tantalum, copper, tungsten, palladium, silicon, and lead under the impact of laser radiation with the duration 70 ps. The specific features of the spallation phenomenon, in which the separation of a part of the target substance occurs at the back surface as a result of the effect of negative pressures (tensile stresses) in the substance, are experimentally studied. To determine the time moment of spallation, the electrocontact method of measuring the velocity of the spalled layer is developed and implemented. The obtained results show that the values of spall strength of the studied materials at moderate amplitudes of the shock-wave effect agree with the known literature data, while at higher pressures the growth of spall strength is observed, which is an evidence of the material hardening. The results of the studies demonstrate that the dynamic strength of a substance depends on both the duration and the amplitude of the shock-wave impact on the target. (extreme light fields and their applications)

  20. Emission features and expansion dynamics of nanosecond laser ablation plumes at different ambient pressures

    SciTech Connect (OSTI)

    Farid, N.; Harilal, S. S. Hassanein, A.; Ding, H.

    2014-01-21

    The influence of ambient pressure on the spectral emission features and expansion dynamics of a plasma plume generated on a metal target has been investigated. The plasma plumes were generated by irradiating Cu targets using 6?ns, 1064?nm pulses from a Q-switched Nd:YAG laser. The emission and expansion dynamics of the plasma plumes were studied by varying air ambient pressure levels ranging from vacuum to atmospheric pressure. The ambient pressure levels were found to affect both the line intensities and broadening along with the signal to background and signal to noise ratios and the optimum pressure conditions for analytical applications were evaluated. The characteristic plume parameters were estimated using emission spectroscopy means and noticed that the excitation temperature peaked ?300?Torr, while the electron density showed a maximum ?100?Torr. Fast-gated images showed a complex interaction between the plume and background air leading to changes in the plume geometry with pressure as well as time. Surface morphology of irradiated surface showed that the pressure of the ambient gas affects the laser-target coupling significantly.

  1. Hard X-ray emission and {sup 44}Ti line features of the Tycho supernova remnant

    SciTech Connect (OSTI)

    Wang, Wei [National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012 (China); Li, Zhuo, E-mail: wangwei@bao.ac.cn, E-mail: zhuo.li@pku.edu.cn [Department of Astronomy and Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871 (China)

    2014-07-10

    A deep hard X-ray survey of the International Gamma-Ray Astrophysics Laboratory (INTEGRAL) satellite has detected for the first time non-thermal emission up to 90 keV in the Tycho supernova (SN) remnant. Its 3-100 keV spectrum is fitted with a thermal bremsstrahlung of kT ? 0.81 0.45 keV plus a power-law model of ? ? 3.01 0.16. Based on diffusive shock acceleration theory, this non-thermal emission, together with radio measurements, implies that the Tycho remnant may not accelerate protons up to >PeV but to hundreds TeV. Only heavier nuclei may be accelerated to the cosmic ray spectral 'knee'. In addition, using INTEGRAL, we search for soft gamma-ray lines at 67.9 and 78.4 keV that come from the decay of radioactive {sup 44}Ti in the Tycho remnant. A bump feature in the 60-90 keV energy band, potentially associated with the {sup 44}Ti line emission, is found with a marginal significance level of ?2.6?. The corresponding 3? upper limit on the {sup 44}Ti line flux amounts to 1.5 10{sup 5} photon cm{sup 2} s{sup 1}. Implications on the progenitor of the Tycho SN, considered to be a Type Ia SN prototype, are discussed.

  2. Diagenetic features of Trenton Limestone in northern Indiana: petrographic evidence for Late (Mesogenetic) Dolostone

    SciTech Connect (OSTI)

    Fara, D.R.

    1986-08-01

    Three conventional cores of the entire Trenton section were examined in detail by in-depth visual description, analysis of more than 250 thin sections, scanning electron microscopy, and x-ray diffraction. The cores are located in the northern half of Indiana where they span the major dolostone pinch-out that is the trap for the prolific Trenton oil and gas field. The Trenton Limestone is completely dolomitized in northern Indiana. Dolostone abundance decreases to the south where the dolostone is restricted to the upper few feet of the formation. Two major types of dolostone are recognized. The top 5-20 ft of the Trenton cores consists of medium crystalline nonporous xenotopic ferroan dolostone. Mesogenetic dewatering of the overlying Maquoketa shale is the proposed dolomitizing mechanisms for this ferroan dolostone cap. Below the ferroan dolostone cap in northern Indiana is coarsely crystalline dolostone, which consists of thin intercalated subfacies of porous idiotopic and nonporous xenotopic dolostone. This is the dominant dolostone type and is the reservoir in the Trenton field. The coarsely crystalline dolostone postdates the ferroan dolostone cap, chert nodule formation, and initial pressure solution. Therefore, this dolostone is considered to have formed relatively late in the diagenetic history of the Trenton under mesogenetic conditions. In the northernmost core, nearly all of the secondary dolomitic porosity is plugged by poikilotopic gypsum and minor amounts of calcite and celestite. Other diagenetic features observed in Trenton are also discussed, including silicification, ferroan calcite cement, upper Trenton contact formation, hardgrounds, and pressure solution.

  3. A smooth landscape: ending saddle point inflation requires features to be shallow

    SciTech Connect (OSTI)

    Battefeld, Diana; Battefeld, Thorsten E-mail: tbattefe@astro.physik.uni-goettingen.de

    2013-07-01

    We consider inflation driven near a saddle point in a higher dimensional field space, which is the most likely type of slow roll inflation on the string theoretical landscape; anthropic arguments need to be invoked in order to find a sufficiently flat region. To give all inflatons large masses after inflation and yield a small but positive cosmological constant, the trajectory in field space needs to terminate in a hole on the inflationary plateau, introducing a curved end-of-inflation hypersurface. We compute non-Gaussianities (bi- and tri-spectrum) caused by this curved hyper-surface and find a negative, potentially large, local non-linearity parameter. To be consistent with current observational bounds, the hole needs to be shallow, i.e. considerably wider than deep in natural units. To avoid singling out our vacuum as special (i.e. more special than a positive cosmological constant entails), we deduce that all features on field space should be similarly shallow, severely limiting the type of landscapes one may use for inflationary model building. We justify the use of a truncated Fourier series with random coefficients, which are suppressed the higher the frequency, to model such a smooth landscape by a random potential, as is often done in the literature without a good a priory reason.

  4. Key wintertime meteorological features of the Grand Canyon and the Colorado Plateaus Basin

    SciTech Connect (OSTI)

    Whiteman, C.D.; Allwine, K.J.

    1992-06-01

    In the winter of 1989--1990 a major meteorological and air pollution experiment was conducted in the Colorado Plateaus Basin (Richards et al., 1991). The focus of the experiment, conducted by Arizona's Soft River Project, was to investigate the influence of three 750-MW coal-fired power plant units at the Navajo Generating Station near Page, Arizona, on visibility at Grand Canyon National Park. As part of the meteorological experiment, surface and upper air data were collected from multiple sites within the basin. This data set is the most comprehensive meteorological data set ever collected within the region, and the purpose of this paper is to briefly summarize the key wintertime meteorological features of the Colorado Plateaus Basin and the Grand Canyon, through which the basin drains, using analyses of the Winter Visibility Study data. Our analyses focused primarily on thermally driven circulations within the basin and the Grand Canyon, but we also investigated the surface energy budget that drives these circulations and the interactions between the thermal circulations and the overlying synoptic-scale flows.

  5. Key wintertime meteorological features of the Grand Canyon and the Colorado Plateaus Basin

    SciTech Connect (OSTI)

    Whiteman, C.D.; Allwine, K.J.

    1992-06-01

    In the winter of 1989--1990 a major meteorological and air pollution experiment was conducted in the Colorado Plateaus Basin (Richards et al., 1991). The focus of the experiment, conducted by Arizona`s Soft River Project, was to investigate the influence of three 750-MW coal-fired power plant units at the Navajo Generating Station near Page, Arizona, on visibility at Grand Canyon National Park. As part of the meteorological experiment, surface and upper air data were collected from multiple sites within the basin. This data set is the most comprehensive meteorological data set ever collected within the region, and the purpose of this paper is to briefly summarize the key wintertime meteorological features of the Colorado Plateaus Basin and the Grand Canyon, through which the basin drains, using analyses of the Winter Visibility Study data. Our analyses focused primarily on thermally driven circulations within the basin and the Grand Canyon, but we also investigated the surface energy budget that drives these circulations and the interactions between the thermal circulations and the overlying synoptic-scale flows.

  6. FIRST SIMULTANEOUS DETECTION OF MOVING MAGNETIC FEATURES IN PHOTOSPHERIC INTENSITY AND MAGNETIC FIELD DATA

    SciTech Connect (OSTI)

    Lim, Eun-Kyung; Yurchyshyn, Vasyl; Goode, Philip

    2012-07-01

    The formation and the temporal evolution of a bipolar moving magnetic feature (MMF) was studied with high-spatial and temporal resolution. The photometric properties were observed with the New Solar Telescope at Big Bear Solar Observatory using a broadband TiO filter (705.7 nm), while the magnetic field was analyzed using the spectropolarimetric data obtained by Hinode. For the first time, we observed a bipolar MMF simultaneously in intensity images and magnetic field data, and studied the details of its structure. The vector magnetic field and the Doppler velocity of the MMF were also studied. A bipolar MMF with its positive polarity closer to the negative penumbra formed, accompanied by a bright, filamentary structure in the TiO data connecting the MMF and a dark penumbral filament. A fast downflow ({<=}2 km s{sup -1}) was detected at the positive polarity. The vector magnetic field obtained from the full Stokes inversion revealed that a bipolar MMF has a U-shaped magnetic field configuration. Our observations provide a clear intensity counterpart of the observed MMF in the photosphere, and strong evidence of the connection between the MMF and the penumbral filament as a serpentine field.

  7. New positron spectral features from supersymmetric dark matter: A way to explain the PAMELA data?

    SciTech Connect (OSTI)

    Bergstroem, Lars; Bringmann, Torsten; Edsjoe, Joakim

    2008-11-15

    The space-borne antimatter experiment PAMELA has recently reported a surprising rise in the positron to electron ratio at high energies. It has also recently been found that electromagnetic radiative corrections in some cases may boost the gamma-ray yield from supersymmetric dark-matter annihilations in the galactic halo by up to 3 or 4 orders of magnitude, providing distinct spectral signatures for indirect dark matter searches to look for. Here, we investigate whether the same type of corrections can also lead to sizeable enhancements in the positron yield. We find that this is indeed the case, albeit for a smaller region of parameter space than for gamma rays; selecting models with a small mass difference between the neutralino and sleptons, like in the stau-coannihilation region in mSUGRA, the effect becomes more pronounced. The resulting, rather hard positron spectrum with a relatively sharp cutoff may potentially fit the rising positron ratio measured by the PAMELA satellite. To do so, however, very large 'boost factors' have to be invoked that are not expected in current models of halo structure. If the predicted cutoff would also be confirmed by later PAMELA data or upcoming experiments, one could either assume nonthermal production in the early universe or nonstandard halo formation to explain such a spectral feature as an effect of dark-matter annihilation. At the end of the paper, we briefly comment on the impact of radiative corrections on other annihilation channels, in particular, antiprotons and neutrinos.

  8. Land cover classification in multispectral imagery using clustering of sparse approximations over learned feature dictionaries

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

    Moody, Daniela I.; Brumby, Steven P.; Rowland, Joel C.; Altmann, Garrett L.

    2014-12-09

    We present results from an ongoing effort to extend neuromimetic machine vision algorithms to multispectral data using adaptive signal processing combined with compressive sensing and machine learning techniques. Our goal is to develop a robust classification methodology that will allow for automated discretization of the landscape into distinct units based on attributes such as vegetation, surface hydrological properties, and topographic/geomorphic characteristics. We use a Hebbian learning rule to build spectral-textural dictionaries that are tailored for classification. We learn our dictionaries from millions of overlapping multispectral image patches and then use a pursuit search to generate classification features. Land cover labelsmore » are automatically generated using unsupervised clustering of sparse approximations (CoSA). We demonstrate our method on multispectral WorldView-2 data from a coastal plain ecosystem in Barrow, Alaska. We explore learning from both raw multispectral imagery and normalized band difference indices. We explore a quantitative metric to evaluate the spectral properties of the clusters in order to potentially aid in assigning land cover categories to the cluster labels. In this study, our results suggest CoSA is a promising approach to unsupervised land cover classification in high-resolution satellite imagery.« less

  9. System and method employing a minimum distance and a load feature database to identify electric load types of different electric loads

    DOE Patents [OSTI]

    Lu, Bin; Yang, Yi; Sharma, Santosh K; Zambare, Prachi; Madane, Mayura A

    2014-12-23

    A method identifies electric load types of a plurality of different electric loads. The method includes providing a load feature database of a plurality of different electric load types, each of the different electric load types including a first load feature vector having at least four different load features; sensing a voltage signal and a current signal for each of the different electric loads; determining a second load feature vector comprising at least four different load features from the sensed voltage signal and the sensed current signal for a corresponding one of the different electric loads; and identifying by a processor one of the different electric load types by determining a minimum distance of the second load feature vector to the first load feature vector of the different electric load types of the load feature database.

  10. Final report: Task 4a.2 20% wind scenario assessment of electric grid operational features

    SciTech Connect (OSTI)

    Toole, Gasper L.

    2009-01-01

    Wind integration modeling in electricity generation capacity expansion models is important in that these models are often used to inform political or managerial decisions. Poor representation of wind technology leads to under-estimation of wind's contribution to future energy scenarios which may hamper growth of the industry. The NREL's Wind Energy Deployment System (WinDS) model provides the most detailed representation of geographically disperse renewable resources and the optimization of transmission expansion to access these resources. Because WinDS was selected as the primary modeling tool for the 20% Wind Energy by 2030 study, it is the ideal tool for supplemental studies of the transmission expansion results. However, as the wind industry grows and knowledge related to the wind resource and integration of wind energy into the electric system develops, the WinDS model must be continually improved through additional data and innovative algorithms to capture the primary effects of variable wind generation. The detailed representation of wind technology in the WinDS model can be used to provide improvements to the simplified representation of wind technology in other capacity expansion models. This task did not employ the WinDS model, but builds from it and its results. Task 4a.2 provides an assessment of the electric grid operational features of the 20% Wind scenario and was conducted using power flow models accepted by the utility industry. Tasks 2 provides information regarding the physical flow of electricity on the electric grid which is a critical aspect of infrastructure expansion scenarios. Expanding transmission infrastructure to access remote wind resource in a physically realizable way is essential to achieving 20% wind energy by 2030.

  11. Thermodynamic Features of Benzene-1,2-Diphosphonic Acid Complexes with Several Metal Ions

    SciTech Connect (OSTI)

    Syouhei Nishihama; Ryan P. Witty; Leigh R Martin; Kenneth L. Nash

    2013-08-01

    Among his many contributions to the advancement of f-element chemistry and separation science, Professor Gregory R. Choppins research group completed numerous investigations featuring the application of distribution techniques to the determination of metal complexation equilibrium quotients. Most of these studies focused on the chemistry of lanthanide and actinide complexes. In keeping with that tradition, this report discusses the complex formation equilibrium constants for complexes of trivalent europium (Eu3+) with benzene-1,2-diphosphonic acid (H4BzDP) determined using solvent extraction distribution experiments in 0.2 M (Na,H)ClO4 media in the temperature range of 5 45 degrees C. Protonation constants for HnBzDP4-n and stoichiometry and stability of BzDP4- complexes with Zn2+, Ni2+, and Cu2+ have also been determined using potentiometric titration (at I = 0.1 M) and 31P NMR spectroscopy. Heats of protonation of HnBzDPn-4 species have been determined by titration calorimetry. From the temperature dependence of the complex Eu3+-HnBzDPn-4 equilibrium constant, a composite enthalpy (?H = -15.1 (+/-1.0) kJ mol-1) of complexation has been computed. Comparing these thermodynamic parameters with literature reports on other diphosphonic acids and structurally similar carboxylic acids indicates that exothermic heats of complexation are unique to the Eu-BzDP system. Comparisons with thermodynamic data from the literature indicate that the fixed geometry imposed by the benzene ring enhances complex stability.

  12. MULTI-DIMENSIONAL FEATURES OF NEUTRINO TRANSFER IN CORE-COLLAPSE SUPERNOVAE

    SciTech Connect (OSTI)

    Sumiyoshi, K. [Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan); Takiwaki, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Matsufuru, H. [Computing Research Center, High Energy Accelerator Research Organization 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan); Yamada, S., E-mail: sumi@numazu-ct.ac.jp, E-mail: takiwaki.tomoya@nao.ac.jp, E-mail: hideo.matsufuru@kek.jp, E-mail: shoichi@heap.phys.waseda.ac.jp [Science and Engineering and Advanced Research Institute for Science and Engineering, Waseda University, Okubo, 3-4-1, Shinjuku, Tokyo 169-8555 (Japan)

    2015-01-01

    We study the multi-dimensional properties of neutrino transfer inside supernova cores by solving the Boltzmann equations for neutrino distribution functions in genuinely six-dimensional phase space. Adopting representative snapshots of the post-bounce core from other supernova simulations in three dimensions, we solve the temporal evolution to stationary states of neutrino distribution functions using our Boltzmann solver. Taking advantage of the multi-angle and multi-energy feature realized by the S {sub n} method in our code, we reveal the genuine characteristics of spatially three-dimensional neutrino transfer, such as nonradial fluxes and nondiagonal Eddington tensors. In addition, we assess the ray-by-ray approximation, turning off the lateral-transport terms in our code. We demonstrate that the ray-by-ray approximation tends to propagate fluctuations in thermodynamical states around the neutrino sphere along each radial ray and overestimate the variations between the neutrino distributions on different radial rays. We find that the difference in the densities and fluxes of neutrinos between the ray-by-ray approximation and the full Boltzmann transport becomes ?20%, which is also the case for the local heating rate, whereas the volume-integrated heating rate in the Boltzmann transport is found to be only slightly larger (?2%) than the counterpart in the ray-by-ray approximation due to cancellation among different rays. These results suggest that we should carefully assess the possible influences of various approximations in the neutrino transfer employed in current simulations of supernova dynamics. Detailed information on the angle and energy moments of neutrino distribution functions will be profitable for the future development of numerical methods in neutrino-radiation hydrodynamics.

  13. Evaluation of Features, Events, and Processes (FEP) for the Biosphere Model

    SciTech Connect (OSTI)

    M. Wasiolek; P. Rogers

    2004-10-27

    The purpose of this analysis report is to evaluate and document the inclusion or exclusion of biosphere features, events, and processes (FEPs) with respect to modeling used to support the total system performance assessment (TSPA) for the license application (LA). A screening decision, either ''Included'' or ''Excluded'', is given for each FEP along with the corresponding technical basis for the excluded FEPs and the descriptions of how the included FEPs were incorporated in the biosphere model. This information is required by the U.S. Nuclear Regulatory Commission (NRC) regulations at 10 CFR 63.114 (d, e, and f) [DIRS 156605]. The FEPs addressed in this report concern characteristics of the reference biosphere, the receptor, and the environmental transport and receptor exposure pathways for the groundwater and volcanic ash exposure scenarios considered in biosphere modeling. This revision provides the summary of the implementation of included FEPs in TSPA-LA, (i.e., how the FEP is included); for excluded FEPs, this analysis provides the technical basis for exclusion from TSPA-LA (i.e., why the FEP is excluded). This report is one of the 10 documents constituting the biosphere model documentation suite. A graphical representation of the documentation hierarchy for the biosphere model is presented in Figure 1-1. This figure shows the interrelationships among the products (i.e., analysis and model reports) developed for biosphere modeling. The ''Biosphere Model Report'' describes in detail the biosphere conceptual model and mathematical model. The input parameter reports shown to the right of the ''Biosphere Model Report'' contain detailed descriptions of the model input parameters and their development. Outputs from these six reports are used in the ''Nominal Performance Biosphere Dose Conversion Factor Analysis and Disruptive Event Biosphere Dose Conversion Factor Analysis'' to generate the biosphere dose conversion factors (BDCFs), which are input parameters for the TSPA-LA model. The ''Biosphere Dose Conversion Factor Importance and Sensitivity Analysis'' analyzes the output of these two BDCF reports.

  14. keV sterile neutrino dark matter from singlet scalar decays: basic concepts and subtle features

    SciTech Connect (OSTI)

    Merle, Alexander; Totzauer, Maximilian

    2015-06-08

    We perform a detailed and illustrative study of the production of keV sterile neutrino Dark Matter (DM) by decays of singlet scalars in the early Universe. In the current study we focus on providing a clear and general overview of this production mechanism. For the first time we study all regimes possible on the level of momentum distribution functions, which we obtain by solving a system of Boltzmann equations. These quantities contain the full information about the production process, which allows us to not only track the evolution of the DM generation but to also take into account all bounds related to the spectrum, such as constraints from structure formation or from avoiding too much dark radiation. In particular we show that this simple production mechanism can, depending on the regime, lead to strongly non-thermal DM spectra which may even feature more than one peak in the momentum distribution. These cases could have particularly interesting consequences for cosmological structure formation, as their analysis requires more refined tools than the simplistic estimate using the free-streaming horizon. Here we present the mechanism including all concepts and subtleties involved, for now using the assumption that the effective number of relativistic degrees of freedom is constant during DM production, which is applicable in a significant fraction of the parameter space. This allows us to derive analytical results to back up our detailed numerical computations, thus leading to the most comprehensive picture of keV sterile neutrino DM production by singlet scalar decays that exists up to now.

  15. A Full-Featured User Friendly CO{sub 2}-EOR and Sequestration Planning Software

    SciTech Connect (OSTI)

    Savage, Bill

    2013-11-30

    A Full-Featured, User Friendly CO{sub 2}-EOR and Sequestration Planning Software This project addressed the development of an integrated software solution that includes a graphical user interface, numerical simulation, visualization tools and optimization processes for reservoir simulation modeling of CO{sub 2}-EOR. The objective was to assist the industry in the development of domestic energy resources by expanding the application of CO{sub 2}-EOR technologies, and ultimately to maximize the CO{sub 2} sequestration capacity of the U.S. The software resulted in a field-ready application for the industry to address the current CO{sub 2}-EOR technologies. The software has been made available to the public without restrictions and with user friendly operating documentation and tutorials. The software (executable only) can be downloaded from NITEC’s website at www.nitecllc.com. This integrated solution enables the design, optimization and operation of CO{sub 2}-EOR processes for small and mid-sized operators, who currently cannot afford the expensive, time intensive solutions that the major oil companies enjoy. Based on one estimate, small oil fields comprise 30% of the of total economic resource potential for the application of CO{sub 2}-EOR processes in the U.S. This corresponds to 21.7 billion barrels of incremental, technically recoverable oil using the current “best practices”, and 31.9 billion barrels using “next-generation” CO{sub 2}-EOR techniques. The project included a Case Study of a prospective CO{sub 2}-EOR candidate field in Wyoming by a small independent, Linc Energy Petroleum Wyoming, Inc. NITEC LLC has an established track record of developing innovative and user friendly software. The Principle Investigator is an experienced manager and engineer with expertise in software development, numerical techniques, and GUI applications. Unique, presently-proprietary NITEC technologies have been integrated into this application to further its ease of use and technical functionality.

  16. NUMERICAL SIMULATIONS OF CHROMOSPHERIC ANEMONE JETS ASSOCIATED WITH MOVING MAGNETIC FEATURES

    SciTech Connect (OSTI)

    Yang, Liping; He, Jiansen; Tu, Chuanyi; Zhang, Lei; Peter, Hardi; Feng, Xueshang; Zhang, Shaohua

    2013-11-01

    Observations with the space-based solar observatory Hinode show that small-scale magnetic structures in the photosphere are found to be associated with a particular class of jets of plasma in the chromosphere called anemone jets. The goal of our study is to conduct a numerical experiment of such chromospheric anemone jets related to the moving magnetic features (MMFs). We construct a 2.5 dimensional numerical MHD model to describe the process of magnetic reconnection between the MMFs and the pre-existing ambient magnetic field, which is driven by the horizontal motion of the magnetic structure in the photosphere. We include thermal conduction parallel to the magnetic field and optically thin radiative losses in the corona to account for a self-consistent description of the evaporation process during the heating of the plasma due to the reconnection process. The motion of the MMFs leads to the expected jet and our numerical results can reproduce many observed characteristics of chromospheric anemone jets, topologically and quantitatively. As a result of the tearing instability, plasmoids are generated in the reconnection process that are consistent with the observed bright moving blobs in the anemone jets. An increase in the thermal pressure at the base of the jet is also driven by the reconnection, which induces a train of slow-mode shocks propagating upward. These shocks are a secondary effect, and only modulate the outflow of the anemone jet. The jet itself is driven by the energy input due to the reconnection of the MMFs and the ambient magnetic field.

  17. UNIQUE FEATURES IN MAGNET DESIGNS FOR R AND D ENERGY RECOVERY LINAC AT BNL.

    SciTech Connect (OSTI)

    MENG,W.; JAIN, A.; GANETIS, G.; KAYRAN, D.; LITVINENKO, V.N.; LONGO, C.; MAHLER, G.; POZDEYEV, E.; TUOZZOLO, J.

    2007-06-25

    In this paper we describe the unique features and analysis techniques used on the magnets for a R&D Energy Recovery Linac (ERL) [1] under construction at the Collider Accelerator Department at BNL. The R&D ERL serves as a test-bed for future BNL ERLs, such as an electron-cooler-ERL at RHIC [2] and a future 20 GeV ERL electron-hadron at eRHIC [3]. Here we present select designs of various dipole and quadruple magnets which are used in Z-bend merging systems [4] and the returning loop, 3-D simulations of the fields in aforementioned magnets, particle tracking analysis, and the magnet's influence on beam parameters. We discuss an unconventional method of setting requirements on the quality of magnetic field and transferring them into measurable parameters as well as into manufacturing tolerances. We compare selected simulation with results of magnetic measurements. A 20 MeV R&D ERL (Fig. 1) is in an advanced phase of construction at the Collider-Accelerator Department at BNL, with commissioning planned for early 2009. In the R&D ERL, an electron beam is generated in a 2 MeV superconducting RF photo-gun, next is accelerated to 20 MeV in a 5 cell SRF linac, subsequently passed through a return loop, then decelerated to 2 MeV in the SRF linac, and finally is sent to a beam dump. The lattice of the R&D ERL is designed with a large degree of flexibility to enable the covering of a vast operational parameter space: from non-achromatic lattices to achromatic with positive, zero and negative R56 parameter. It also allows for large range tunability of Rlz and lattice RS4 parameters (which are important for transverse beam-break-up instability). Further details of the R&D ERL can be found elsewhere in these proceedings [5]. The return loop magnets are of traditional design with the following exceptions: (a) The bending radius of the 60{sup o} dipole magnets is 20 cm, which is rather small. We use 15{sup o} edges on both sides of the dipoles to split very strong focusing evenly between the horizontal and vertical planes (so-called chevron-magnet). (b) The requirements on field quality of the loop's quadrupoles had been determined by the requirement to preserve a very low normalized transverse slice emittance of electron beam ({var_epsilon} {approx} 1 mm-mrad). We used direct tracking of a sample electron beam to verify a high degree of the emittance preservation. (c) Each quadrupole is equipped with a dipole trim coil, which can be also used to excite a sextupole component, if required, for emittance preservation of e-beam with a large energy spread. One of the unique features of all ERLs is the necessity for merging low and high energy electron beams. In the R&D ERL, 2 MeV from the SRF gun merges with the 20 MeV electron beam coming around the return loop into the same trajectory at a position within the SRF linac. In the linac, injected bunch is accelerated to 20 MeV, while the returned or ''used'' bunch is decelerated to 2 MeV. The challenge for a merger design is to provide conditions for emittance compensation [5] and also for achromatic conditions of a low energy, space-charge dominated-e-beam [4,6]. The scheme which satisfies these requirements (called 2-bend [4]) is used on the R&D ERL. The Z-bend is approximately 4-meter long. It bends the beam trajectory in the vertical plane. It is comprised of four dipole magnets designed to be equally focusing in both planes, with bending radius {approx} 60 cm, and bending angles of: +15{sup o}, -30{sup o}, +30{sup o} and -15{sup o}. The beam dynamics in the Z-bend results in a large-size (centimeters) near-laminar electron beam [7]. The large beam size and very low slice emittance of the e-beam dictates the tolerances on the magnetic field to be very tight. The integrated nonlinear kicks should not exceed {approx} 20 micro-radian per magnet at a typical radius {approx} 1 cm. The magnets in the Z-bend are rather short (15 cm effective length for the 15{sup o} magnet) and have a rather large aperture of 6 cm. Analysis predicts that the influence of various field components on the emittance growth are complicated by the fact that the beam trajectory bends significantly in the Einge fields. Hence, we decided to use direct tracking in the calculated fields extracted from Opera3d of test beam to evaluate and to minimize influence of magnetic field on the beam emittance. In addition, we used predictions of Opera3d and compared them with results of magnetic measurements for the return loop dipole and quadrupole. One of the features of the loop magnets is that they are fabricated with a very high geometric tolerance, allowing them to be an excellent test bed for bench-marking our predictions. Agreement with the prediction provides us with sufficient confidence that Z-bend magnets will preserve beam emittance.

  18. SunShot Summit to be Featured in May 7th #SolarChat | Department of Energy

    Energy Savers [EERE]

    to be Featured in May 7th #SolarChat SunShot Summit to be Featured in May 7th #SolarChat March 28, 2014 - 2:39pm Addthis Did you know that more than half of all solar cell efficiency records have been directly funded by the U.S. Department of Energy (DOE)? Only three years into the Department's decade-long SunShot Initiative, the solar industry is already more than 60% of the way to achieving SunShot's aggressive cost targets -$0.06 per kilowatt hour (kWh) for utility-scale PV solar electricity

  19. Design Review Report for formal review of safety class features of exhauster system for rotary mode core sampling

    SciTech Connect (OSTI)

    JANICEK, G.P.

    2000-06-08

    Report documenting Formal Design Review conducted on portable exhausters used to support rotary mode core sampling of Hanford underground radioactive waste tanks with focus on Safety Class design features and control requirements for flammable gas environment operation and air discharge permitting compliance.

  20. Accounting for a feature of the configuration of the loops in the primary circuit of VVER-440 reactors

    SciTech Connect (OSTI)

    Khazanov, A. L. [FBU 'Scientific and Engineering Center for Nuclear and Radiation Safety' (FBU 'NTTs YaRB') (Russian Federation)] [FBU 'Scientific and Engineering Center for Nuclear and Radiation Safety' (FBU 'NTTs YaRB') (Russian Federation)

    2013-09-15

    A feature of the configuration of the loops of the primary circuit of VVER-440 reactors and its influence on the characteristics of the main circulation pumps are analyzed. It is proposed that differences in the characteristics of the main reactor circulation pumps be taken account during the design and operation of nuclear power plants.