National Library of Energy BETA

Sample records for lbs features regenerative

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

    SciTech Connect

    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. LBS GatlingGun13A (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    LBS GatlingGun13A Citation Details In-Document Search Title: LBS GatlingGun13A Authors: Martinez, D ; Kane, J O ; Heeter, R ; Casner, A ; Mancini, R Publication Date: 2013-10-09 ...

  3. Fully relayed regenerative amplifier

    DOEpatents

    Glass, Alexander J.

    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.

  4. Regenerative feedback resonant circuit

    DOEpatents

    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.

  5. REGENERATIVE TRANSISTOR AMPLIFIER

    DOEpatents

    Kabell, L.J.

    1958-11-25

    Electrical circults for use in computers and the like are described. particularly a regenerative bistable transistor amplifler which is iurned on by a clock signal when an information signal permits and is turned off by the clock signal. The amplifier porforms the above function with reduced power requirements for the clock signal and circuit operation. The power requirements are reduced in one way by employing transformer coupling which increases the collector circuit efficiency by eliminating the loss of power in the collector load resistor.

  6. Regenerative air heater

    DOEpatents

    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.

  7. Regenerative air heater

    DOEpatents

    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.

  8. Regenerative braking device

    DOEpatents

    Hoppie, Lyle O.

    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.

  9. Regenerative combustion device

    DOEpatents

    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.

  10. Regen SW | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    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

    DOEpatents

    Welch, James D.

    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.

  12. Regenerative switching CMOS system

    DOEpatents

    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.

  13. Laser system using regenerative amplifier

    DOEpatents

    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.

  14. Laser system using regenerative amplifier

    DOEpatents

    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.

  15. Regenerative Fuel Cells for Energy Storage

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    1 1 Regenerative Fuel Cells for Energy Storage April 2011 Corky Mittelsteadt April 2011 2 Outline 1. Regenerative Fuel Cells at Giner 2. Regenerative Systems for Energy Storage 1. Economics 2. Electrolyzer Optimization 3. Fuel Cell Optimization 4. What to do with O 2 ? 5. High Pressure Electrolysis vs. External Pumping 3. The Three Questions April 2011 3 RFC System Challenges Existing state of the art regenerative fuel cell systems require two separate stacks and significant auxiliary support

  16. Advanced regenerative absorption refrigeration cycles

    DOEpatents

    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).

  17. Variable ratio regenerative braking device

    DOEpatents

    Hoppie, Lyle O.

    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.

  18. Regenerative rotary displacer Stirling engine

    SciTech Connect

    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.

  19. High power regenerative laser amplifier

    DOEpatents

    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. High power regenerative laser amplifier

    DOEpatents

    Miller, John L.; Hackel, Lloyd A.; Dane, Clifford B.; Zapata, Luis E.

    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.

  1. Therapeutic potential of nanoceria in regenerative medicine

    SciTech Connect

    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.

  2. Combined hydraulic and regenerative braking system

    DOEpatents

    Venkataperumal, R.R.; Mericle, G.E.

    1979-08-09

    A combined hydraulic and regenerative braking system and method for an electric vehicle is disclosed. The braking system is 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.

  3. Combined hydraulic and regenerative braking system

    DOEpatents

    Venkataperumal, Rama R.; Mericle, Gerald E.

    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.

  4. WIDE BAND REGENERATIVE FREQUENCY DIVIDER AND MULTIPLIER

    DOEpatents

    Laine, E.F.

    1959-11-17

    A regenerative frequency divider and multiplier having wide band input characteristics is presented. The circuit produces output oscillations having frequencies related by a fixed ratio to input oscillations over a wide band of frequencies. In accomplishing this end, the divider-multiplier includes a wide band input circuit coupled by mixer means to a wide band output circuit having a pass band related by a fixed ratio to that of the input circuit. A regenerative feedback circuit derives a fixed frequency ratio feedback signal from the output circuit and applies same to the mixer means in proper phase relation to sustain fixed frequency ratio oscillations in the output circuit.

  5. Innovative technical advances in the application of regenerative thermal oxidizers

    SciTech Connect

    Grzanka, R.; Truppi, T.

    1999-07-01

    Regenerative Thermal Oxidizers (RTOs) have been applied in industry for over twenty (20) years to reduce the emissions of Volatile Organic compounds (VOCs) into the atmosphere from industrial process emissions. The Clean Air Act and its amendments have established a regulatory framework setting standards for allowable levels of VOC emissions. Several forces are driving the increasing use and acceptance of this technology: (1) High efficiency and increasing stringent standards require higher destruction efficiency; (2) Low operating cost and control of emission streams with less VOCs (therefore, less fuel value) causing higher use of natural gas for combustion; (3) Low NO{sub x}--the overlapping concern of NO{sub x} generation from the combustion process; (4) Low process upsets with improved productivity of industrial process require continuous integration of VOC abatement equipment; and (5) Reduced capital cost--capital cost criteria is $/ton of VOC abated. The latest development in RTO technology is the Single Can Oxidizer (SCO). This regenerative thermal oxidizer is the accumulation of developments in many subsystems of RTOs, combined with a dramatic new configuration. Several features of the system offer unique benefits to industrial end users: (1) Single can configuration gives reduced weight, material usage, and cost; (2) Rotary valve design gives smooth operation, and low pressure fluctuations; (3) Structured block heat recovery media reduces pressure drop, and lowers HP/operating cost; and (4) SMART system lowers NO{sub x} output/reduced operation cost. This paper will present a discussion of the features listed above. In addition, it will provide analytical documentation of test results for a full scale commercial unit.

  6. Low-temperature thermally regenerative electrochemical system

    DOEpatents

    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.

  7. Low temperature thermally regenerative electrochemical system

    DOEpatents

    Loutfy, Raouf O.; Brown, Alan P.; Yao, Neng-Ping

    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.

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

    SciTech Connect

    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. Regenerative fuel cell systems R and D

    SciTech Connect

    Mitlitsky, F.; Myers, B.; Weisberg, A.H.

    1998-08-01

    Regenerative fuel cell (RFC) systems produce power and electrolytically regenerate their reactants using stacks of electrochemical cells. Energy storage systems with extremely high specific energy (> 400 Wh/kg) have been designed that use lightweight pressure vessels to contain the gases generated by reversible (unitized) regenerative fuel cells (URFCs). Progress is reported on the development, integration, and operation of rechargeable energy storage systems with such high specific energy. Lightweight pressure vessels that enable high specific energies have been designed with performance factors (burst pressure/internal volume/tank weight) > 50 km (2.0 million inches), and a vessel with performance factor of 40 km (1.6 million inches) was fabricated. New generations of both advanced and industry-supplied hydrogen tankage are under development. A primary fuel cell test rig with a single cell (46 cm{sup 2} active area) has been modified and operated reversibly as a URFC (for up to 2010 cycles on a single cell). This URFC uses bifunctional electrodes (oxidation and reduction electrodes reverse roles when switching from charge to discharge, as with a rechargeable battery) and cathode feed electrolysis (water is fed from the hydrogen side of the cell). Recent modifications also enable anode feed electrolysis (water is fed from the oxygen side of the cell). Hydrogen/halogen URFCs, capable of higher round-trip efficiency than hydrogen/oxygen URFCs, have been considered, and will be significantly heavier. Progress is reported on higher performance hydrogen/oxygen URFC operation with reduced catalyst loading.

  10. Multiple excitation regenerative amplifier inertial confinement system

    DOEpatents

    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.

  11. Multiple excitation regenerative amplifier inertial confinement system

    DOEpatents

    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.

  12. Adaptive controller for regenerative and friction braking system

    DOEpatents

    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.

  13. Adaptive controller for regenerative and friction braking system

    DOEpatents

    Davis, Roy I.

    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.

  14. Maass Regenerative Energien GmbH | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    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,...

  15. High power, high beam quality regenerative amplifier

    DOEpatents

    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.

  16. High power, high beam quality regenerative amplifier

    DOEpatents

    Hackel, Lloyd A.; Dane, Clifford B.

    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.

  17. 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 rev_fc_wkshp_mittelsteadt.pdf (723.94 KB) 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

  18. Electric vehicle regenerative antiskid braking and traction control system

    DOEpatents

    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.

  19. Electric vehicle regenerative antiskid braking and traction control system

    DOEpatents

    Cikanek, Susan R.

    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.

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

    DOEpatents

    Kim, Kwang-Je; Zholents, Alexander; Zolotorev, Max

    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.

  1. Conversion of a regenerative oxidizer into catalytic unit

    SciTech Connect

    Matros, Y.S.; Bunimovich, G.A.; Strots, V.O.

    1997-12-31

    Use of a VOC oxidation catalyst in the existing regenerative thermal oxidizers may greatly reduce fuel consumption and improve the oxidizer performance. This was demonstrated in a commercial 25,000 SCFM unit installed at a printing facility. The paper discusses the principles of the oxidizer retrofit design and test results obtained at various conditions of operation.

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

    SciTech Connect

    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.

  3. Rotary regenerative catalytic oxidizer for VOC emission control

    SciTech Connect

    Fu, J.C.; Chen, J.M.

    1998-12-31

    Thermal or catalytic oxidation has been widely accepted in industries as one of the most effective technologies for the control of VOC emissions. To reduce energy cost, this technology normally incorporates heat exchanger to recover waste heat from hot combustion exhaust. Among various heat recovery methods, it is known that the regenerative system has the highest thermal efficiency (> 90%). The normal regenerative heat exchanger design is to use ceramic heat sink material packed in a fixed-bed configuration to capture excess heat from outgoing hot combustion exhaust and use it later to preheat incoming cold VOC laden gas stream by periodically switching gas streams using valves. This paper presents a novel design of the regenerative catalytic oxidizer. This design uses a honeycomb rotor with discrete parallel channels as the heat transfer media on which catalyst is coated to promote oxidation reaction. Heat recovery of this unit is accomplished by rotating the rotor between cold and hot flow streams. The thermal efficiency of the unit can be controlled by the rotation speed. Because it can rotate between hot and cold streams at higher rate than that can be achieved by valve switching, the rotary regenerative catalytic oxidizer uses much less heat transfer media than that is normally required for the fixed-bed design for the same thermal efficiency. This leads to a more compact and less costly unit design. The continuous rotation mechanism also eliminates the pressure fluctuation that is experienced by the fixed-bed design using valves for flow switching. The advantages of this new design are demonstrated by the data collected from a laboratory scale test unit.

  4. Featured Announcements

    U.S. Department of Energy (DOE) - all 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...

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

    SciTech Connect

    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.

  6. Propellant feed system of a regeneratively cooled scramjet

    SciTech Connect

    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.

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

    SciTech Connect

    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.

  8. ARM - Features

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CenterFeatures Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes118 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 7 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 CARES 1 Data Quality Office 2 ENA 2 GOAMAZON 7 HI-SCALE 5 LASIC 3 MAGIC 15 MC3E 17 PECAN 3 SGP 8 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

  9. Regenerative braking device with rotationally mounted energy storage means

    DOEpatents

    Hoppie, Lyle O.

    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.

  10. Options for VOC reduction in a regenerative thermal oxidizer (RTO)

    SciTech Connect

    Waldern, P.J.; Nutcher, P.; Lewandowski, D.

    1997-12-31

    Environmental regulations stemming from the 1990 Clean Air Act amendments are requiring treatment of high volume but relatively dilute VOC contaminated air and waste gas streams. Because of its low operating costs, Regenerative Thermal Oxidation (RTO) has emerged as the preferred treatment method for many of these streams. In the past, this technology usually required multiple (3 or more) beds of heat sink packing. However, some new units are being supplied with only two beds. Consequently, capital costs are lower. This paper describes test data from a unique twin bed RTO. Data for two different types of heat sink material will be presented, random packing and structured packing. The effect of cycle time, bed length, and packing type on thermal efficiency will be described. A cost comparison is included showing the effect of packing type on both capital and operating costs for various RTO sizes.

  11. Featured Announcements

    U.S. Department of Energy (DOE) - all 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 Smoot, and Saul Perlmutter -- are now available for viewing. Read the full post Xeon Phi Nationwide training sessions available from Intel May 7, 2014 by Katie Antypas NERSC's next supercomputer, Cori, will using the Xeon Phi processor architecture. In order to achieve high performance on Xeon Phi, users will need to

  12. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    September 2016 Call for Proposals: NESAP for Data September 27, 2016 by Rollin Thomas NERSC is now accepting applications for participation in the NERSC Exascale Science Applications Program (NESAP) from developers of data-intensive science applications (NESAP for Data). NESAP is a highly successful collaborative effort where NERSC partners with code teams and library and tool developers to prepare for the NERSC-8 Cori manycore architecture. A key feature of the Cori system is the Intel Xeon Phi

  13. Featured Announcements

    U.S. Department of Energy (DOE) - all 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

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

    DOEpatents

    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.

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

    DOEpatents

    Cikanek, Susan R.

    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.

  16. AmeriFlux US-SP2 Slashpine-Mize-clearcut-3yr,regen

    SciTech Connect

    Martin, Tim

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-SP2 Slashpine-Mize-clearcut-3yr,regen. Site Description - Even aged slash pine (Pinus elliottii) plantation. Planted in Jan. 1999.

  17. Lightweight pressure vessels and unitized regenerative fuel cells

    SciTech Connect

    Mitlitsky, F.; Myers, B.; Weisberg, A.H.

    1996-12-31

    High specific energy (>400 Wh/kg) energy storage systems have been designed using lightweight pressure vessels in conjunction with unitized regenerative fuel cells (URFCs). URFCs produce power and electrolytically regenerate their reactants using a single stack of reversible cells. Although a rechargeable energy storage system with such high specific energy has not yet been fabricated, we have made progress towards this goal. A primary fuel cell (FC) test rig with a single cell (0.05 ft{sup 2} active area) has been modified and operated reversibly as a URFC. This URFC uses bifunctional electrodes (oxidation and reduction electrodes reverse roles when switching from charge to discharge, as with a rechargeable battery) and cathode feed electrolysis (water is fed from the oxygen side of the cell). Lightweight pressure vessels with state-of-the-art performance factors (burst pressure * internal volume/tank weight = Pb V/W) have been designed and fabricated. These vessels provide a lightweight means of storing reactant gases required for fuel cells (FCs) or URFCs. The vessels use lightweight bladder liners that act as inflatable mandrels for composite overwrap and provide the permeation barrier for gas storage. The bladders are fabricated using materials that are compatible with humidified gases which may be created by the electrolysis of water and are compatible with elevated temperatures that occur during fast fills.

  18. Optimization of the alignment sensitivity and energy stability of the NIF regenerative amplifier cavity/011

    SciTech Connect

    Hopps, N. W., Atomic Weapons Research Establishment, Aldermaston, Great Britain

    1998-06-24

    The work to improve the energy stability of the regenerative amplifier (`regen`) for the National Ignition Facility is described. This includes a fast feed-forward system, designed to regulate the output energy of the regen by monitoring how quickly a pulse builds up over many round trips. Shot-to-shot energy fluctuations of all elements prior to (and including) the regen may be compensated for in this way, at the expense of a loss of approximately 50%. Also included is a detailed study into the alignment sensitivity of the regen cavity, with the goal of quantifying the effect of misalignment on the output energy. This is done by calculating the displacement of the eigenmode by augmenting the cavity ABCD matrix with the misalignment matrix elements, E, F. In this way, cavity misalignment issues due to thermal loading of the gain medium are investigated. Alternative cavity designs, which reduce the alignment sensitivity and therefore the energy drift over periods of continuous operation, are considered. Alterations to the amplifier head design are also considered.

  19. AmeriFlux US-SP1 Slashpine-Austin Cary- 65yrs nat regen

    SciTech Connect

    Martin, Tim

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-SP1 Slashpine-Austin Cary- 65yrs nat regen. Site Description - The ACMF site is a 67 hectare naturally regenerated Pinus palustris and Pinus elliottii mixed stand.

  20. TV picture-tube manufacturer uses regenerative catalytic oxidizer to reduce VOC emissions

    SciTech Connect

    1995-11-01

    Toshiba Display Services, a television picture-tube manufacturer in Horseheads, NY, recently was able to meet stringent state regulations to reduce emissions from two of its film applications lines by installing a regenerative catalytic oxidation system. Toshiba officials initially evaluated several technologies to control volatile organic compounds. After deciding that oxidation was the best technology for its facility, the company invited a number of suppliers to submit proposals. Because all of the oxidation technologies considered by Toshiba had the capability to achieve the destruction and removal efficiency requirement, the company combined the second and third decision elements and conducted an in-depth comparison of the initial capital and ongoing operating costs for each proposal. Officials narrowed the field to two systems--the lowest-cost regenerative thermal oxidation system on the market and a regenerative catalytic oxidation system. The company selected St. Louis, Mo.-based Monsanto Enviro-Chem Systems Inc., to install its DynaCycle{reg_sign} regenerative catalytic oxidation system, marking the first Dyna-Cycle installation in a US television picture-tube facility.

  1. Comparison of a regenerative thermal oxidizer to a rotary concentrator for gravure printer ketone emissions

    SciTech Connect

    Blocki, S.W.

    1996-12-31

    A large gravure printer was faced with choosing a control system to reduce ketone emissions. The volume of exhaust air requiring treatment was very large, making any system expensive to operate. The large system magnified the need to find the most cost-effective system including capital cost, operating cost, and periodic replacement cost. Future expandability and very high efficiency were required. Several proven control technologies were evaluated, including a recuperative oxidizer, a catalytic oxidizer, a stand-alone regenerative oxidizer, a rotary solvent concentrator, and a solvent recovery system. The most cost-effective system meeting the destruction requirements was achieved by integrating two technologies - a rotary solvent concentrator following by a small regenerative thermal oxidizer - into one unique and very flexible system. Operating costs used to evaluate each option are presented. Destruction and removal efficiency of the final system is presented. 3 figs., 4 tabs.

  2. Experimental analysis of heat transfer characteristics and pressure drop through screen regenerative heat exchangers. Master's thesis

    SciTech Connect

    Wiese, J.L.

    1993-12-01

    This study investigated the effect on heat transfer and friction characteristics for screen regenerative heat exchangers with the screen thickness reduced by rolling. The experiments were performed on 250 and 325 mesh, 304 stainless steel screen using helium gas. Reynolds numbers, based on hydraulic radius, Re, were between 10 and 100. Both the Colburn factor, StPr(2/3), and friction factor, f, decreased as the screen thickness was reduced. A correlation was found for predicting friction factor, f. The drag coefficient per screen remained nearly unchanged for thicknesses reduced not more than 30 percent. The decrease in Colburn factor was significant for Re less than 40. For Re between 40 and 100 the decrease in Colburn factor was less than the experimental uncertainty. Regenerative Cooling, Regenerators, Cryogenic Engines, Screens (Woven Materials), Mesh, Stirling Cycle.

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

    SciTech Connect

    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.

  4. Featured Topic Pages

    U.S. Department of Energy (DOE) - all 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, ...

  5. DVU Featured Training & Events ...

    Energy.gov [DOE] (indexed site)

    Featured Training & Events Form Please complete this form in its entirety and email to ... Classroom, Online) 8. Course Location: Training Facility Address, Room City & State : ...

  6. Hopper Featured Announcements

    U.S. Department of Energy (DOE) - all 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...

  7. Hopper Featured Announcements

    U.S. Department of Energy (DOE) - all 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...

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

    DOEpatents

    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.

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

    SciTech Connect

    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 today’s regenerative fuel cell systems at a fraction of the cost, and can be used to store electricity on the electric grid.

  10. 2013 Feature Stories | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2013 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 2013 New Test Facility to Improve Wind Turbines New Test Facility to Improve Wind Turbines Five-megawatt dynamometer will accelerate the development of next-generation wind energy technologies. Bright Ideas Chase Investor Dollars at Forum Bright Ideas Chase Investor Dollars at Forum Annual Industry Growth Forum

  11. Community Feature Stories

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Community Feature Stories 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 agriculturists. - 8/6/12 Jacob Leyba,

  12. Feature Characterization Library

    Energy Science and Technology Software Center

    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.

  13. DOE Weighs in at 120,000 lbs!

    Energy.gov [DOE]

    Tom D'Agostino, Under Secretary for Nuclear Security, and Administrator for the National Nuclear Security Administration, as well as the Energy Department of Energy's Co-Chair to Feds Feed Families, shares the results of the Federal food donation drive.

  14. ACR-1000 Passive Features

    SciTech Connect

    Lekakh, Boris; Hau, Ken; Ford, Steven

    2006-07-01

    The Advanced CANDU Reactor{sup TM} (ACR{sup TM}) is a Generation III+ pressure tube type reactor using light water coolant and heavy water moderator. The ACR-1000 reactor design is an evolutionary extension of the proven CANDU reactor design. The ACR-1000 incorporates multiple and diverse passive systems for accident mitigation. Where necessary, one or more features that are passive in nature have been included for mitigation of any postulated accident event. This paper describes how the use of passive design elements complements active features enhances reliability and improves safety margins. (authors)

  15. Intrinsic Feature Motion Tracking

    Energy Science and Technology Software Center

    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

  16. Hopper Featured Announcements

    U.S. Department of Energy (DOE) - all 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

  17. Hopper Featured Announcements

    U.S. Department of Energy (DOE) - all 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,

  18. Operation of the 25 kW NASA Lewis Solar Regenerative Fuel Cell Testbed Facility

    SciTech Connect

    Voecks, G.E.; Rohatgi, N.K.; Moore, S.H.

    1996-12-31

    Assembly of the NASA Lewis Research Center Solar Regenerative Fuel Cell Testbed Facility has recently been completed and system testing is in progress. This facility includes the integration of 50 kW photovoltaic solar cell arrays, a 25 kW proton exchange membrane (PEM) electrolysis unit, four 5 kW PEM fuel cells, high pressure hydrogen and oxygen storage vessels, high purity water storage containers, and computer monitoring, control and data acquisition. The purpose of this facility is multi-faceted, but was originally intended to serve as a testbed for evaluating a closed-loop powerplant for future NASA extended life support operations, such as a Lunar outpost, and also as a terrestrial powerplant example for remote or continuous back-up support operations. The fuel cell and electrolyzer subsystems design and assembly were conducted by the Jet Propulsion Laboratory (JPL), the photovoltaic arrays and electrical interconnect to the electrolyzer were provided by the US Navy/China Lake Naval Weapons Center, and testing and operations are being carried out by JPL.

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

    DOE PAGES [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; 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

  20. Electrospun Nafion®/Polyphenylsulfone composite membranes for regenerative Hydrogen bromine fuel cells

    DOE PAGES [OSTI]

    Park, Jun; Wycisk, Ryszard; Pintauro, Peter N.; Yarlagadda, Venkata; Van Nguyen, Trung

    2016-02-29

    Here, the regenerative H2/Br2-HBr fuel cell, utilizing an oxidant solution of Br2 in aqueous HBr, shows a number of benefits for grid-scale electricity storage. The membrane-electrode assembly, a key component of a fuel cell, contains a proton-conducting membrane, typically based on the perfluorosulfonic acid (PFSA) ionomer. Unfortunately, the high cost of PFSA membranes and their relatively high bromine crossover are serious drawbacks. Nanofiber composite membranes can overcome these limitations. In this work, composite membranes were prepared from electrospun dual-fiber mats containing Nafion® PFSA ionomer for facile proton transport and an uncharged polymer, polyphenylsulfone (PPSU), for mechanical reinforcement, and swelling control.more » After electrospinning, Nafion/PPSU mats were converted into composite membranes by softening the PPSU fibers, through exposure to chloroform vapor, thus filling the voids between ionomer nanofibers. It was demonstrated that the relative membrane selectivity, referenced to Nafion® 115, increased with increasing PPSU content, e.g., a selectivity of 11 at 25 vol% of Nafion fibers. H2-Br2 fuel cell power output with a 65 m thick membrane containing 55 vol% Nafion fibers was somewhat better than that of a 150 m Nafion® 115 reference, but its cost advantage due to a four-fold decrease in PFSA content and a lower bromine species crossover make it an attractive candidate for use in H2/Br2-HBr systems.« less

  1. Review of thermally regenerative electrochemical systems. Volume I. Synopsis and executive summary

    SciTech Connect

    Chum, H. L.; Osteryoung, R. A.

    1980-08-01

    Thermally regenerative electrochemical systems (TRES) are closed systems that convert heat into electricity in an electrochemical heat engine that is Carnot cycle limited in efficiency. Past and present work on such systems is reviewed. Two broad classes of TRES are based on the types of energy inputs required for regeneration: thermal alone and coupled thermal and electrolytic. The thermal regeneration alone encompasses electrochemical systems (galvanic or fuel cells) in which one or more products are formed. The regeneration can be performed in single or multiple steps. The compounds include metal hydrides, halides, oxides, chalcogenides, and alloys or bimetallic systems. The coupled thermal and electrolytic regeneration encompasses electrochemical systems (galvanic or fuel cells) regenerated by electrolysis at a different temperature or different pressure. Examples include metal halides and water. Thermogalvanic or nonisothermal cells are included in this category. Also included are electrochemical engines in which the working electroactive fluid is isothermally expanded through an electrolyte. TRES cover temperature ranges from about 20/sup 0/C to 1000/sup 0/C. Engines with power outputs of 0.1 mW/cm/sup 2/ to 1 W/cm/sup 2/ have been demonstrated. Recommendations are made of areas of research in science and engineering that would have long-range benefit to a TRES program.

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

    SciTech Connect

    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.

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

    SciTech Connect

    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.

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

    DOEpatents

    Beaufrere, Albert H.

    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.

  5. An electromagnetic and thermodynamic lumped parameter model of an explosively driven regenerative magnetohydrodynamic generator

    SciTech Connect

    Morrison, J.L.

    1992-12-01

    The objective of this research is to develop a simple, yet accurate, lumped parameter mathematical model for an explosively driven magnetohydrodynamic generator that can predict the pulse power variables of voltage and current from startup through regenerative operation. The inputs to the model will be the plasma properties entering the generator as predicted by the explosive shock model of Reference [1]. The strategy used was to simplify electromagnetic and thermodynamic three dimensional effects into a zero dimensional model. The model will provide a convenient tool for researchers to optimize designs to be used in pulse power applications. The model is validated using experimental data of Reference [1]. An overview of the operation of the explosively driven generator is first presented. Then a simplified electrical circuit model that describes basic performance of the device is developed. Then a lumped parameter model that incorporates the coupled electromagnetic and thermodynamic effects that govern generator performance is described and developed. The model is based on fundamental physical principles and parameters that were either obtained directly from design data or estimated from experimental data. The model was used to obtain parameter sensitivities and predict beyond the limits observed in the experiments to the levels desired by the potential Department of Defense sponsors. The model identifies process limitations that provide direction for future research.

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

    SciTech Connect

    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.

  7. qFeature

    Energy Science and Technology Software Center

    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

  8. qFeature

    SciTech Connect

    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.

  9. 2007 Feature Stories | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    List of Tables Main Report | Methodology | FAQ | List of Tables CBECS 2007 - Release date: August 17, 2012 Table H1: Structural and Geographical Information for Large Hospitals Table H2: Fuels and End Uses in Large Hospitals Table H3: End Use Equipment in Large Hospitals Table H4: Lighting and Window Features in Large Hospitals Table H5: Major Fuels Usage for Large Hospitals Table H6: Electricity Usage for Large Hospitals Table H7: Natural Gas Usage for Large Hospitals Table H8: Water

  10. Upcoming Features - VOLTTRON 2016

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    4.0 Features CRAIG ALLWARDT August 11, 2016 1 Pacific Northwest National Laboratory VOLTTRON TM 2016 PNNL-SA-119832 Motivations ► 3.0 improved security and flexibility ■ Usability and scalability paid a price ► Improve usability of instance registration and management ► Improve configuration of platform for remote access ► Make documentation more accessible and more in line with current state of code ► Improve the process of validating 3 rd party agents. ► Meet the requirements of

  11. Recursive Feature Extraction in Graphs

    Energy Science and Technology Software Center

    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.

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

    SciTech Connect

    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.

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

    SciTech Connect

    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

  14. Newsletter Features | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    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 Message from the Director ChrisDeschene.png In May 2015 I began serving as Director of the U.S. Department of Energy's Office of Indian

  15. CFD Simulations of a Regenerative Process for Carbon Dioxide Capture in Advanced Gasification Based Power Systems

    SciTech Connect

    Arastoopour, Hamid; Abbasian, Javad

    2014-07-31

    the method of moments, called Finite size domain Complete set of trial functions Method Of Moments (FCMOM) was used to solve the population balance equations. The PBE model was implemented in a commercial CFD code, Ansys Fluent 13.0. The code was used to test the model in some simple cases and the results were verified against available analytical solution in the literature. Furthermore, the code was used to simulate CO2 capture in a packed-bed and the results were in excellent agreement with the experimental data obtained in the packed bed. The National Energy Laboratory (NETL) Carbon Capture Unit (C2U) design was used in simulate of the hydrodynamics of the cold flow gas/solid system (Clark et al.58). The results indicate that the pressure drop predicted by the model is in good agreement with the experimental data. Furthermore, the model was shown to be able to predict chugging behavior, which was observed during the experiment. The model was used as a base-case for simulations of reactive flow at elevated pressure and temperatures. The results indicate that by controlling the solid circulation rate, up to 70% CO2 removal can be achieved and that the solid hold up in the riser is one of the main factors controlling the extent of CO2 removal. The CFD/PBE simulation model indicates that by using a simulated syngas with a composition of 20% CO2, 20% H2O, 30% CO, and 30% H2, the composition (wet basis) in the reactor outlet corresponded to about 60% CO2 capture with and exit gas containing 65% H2. A preliminary base-case-design was developed for a regenerative MgO-based pre-combustion carbon capture process for a 500 MW IGCC power plant. To minimize the external energy requirement, an extensive heat integration network was developed in Aspen/HYSYS® to produce the steam required in the regenerator and heat integration. In this process, liquid CO2 produced at 50 atm can easily be pumped and sequestered or stored. The preliminary economic analyses indicate that the

  16. Can regenerataive braking be applied to a Stirling engine (Stirling-powered regenerative-retarding propulsion system for automotive application)

    SciTech Connect

    Walker, G.

    1980-07-01

    A recently completed University of Calgary study has shown that regenerative retarding (the storage and later use of energy normally dissipated as heat by friction brakes) can be applied to vehicles powered by Stirling-cycle engines. Changes in the valving arrangement of a multiple-cylinder Stirling powerplant can convert the engine to a heat pump capable of recovering energy that would ordinarily be wasted during a vehicle's downhill travel and of transferring the energy through a liquid-metal heat pipe to storage in a thermal battery for later reuse in the vehicle's externally heated propulsion system. Up to 60% of the fuel needed to drive a truck uphill could be saved by regenerative braking downhill. When petroleum-based diesel fuel and gasoline are no longer available at low cost, the energy sources for Stirling-engine propulsion will include electricity, natural gas, coal, and various organic wastes. The thermal battery/Stirling engine combination will then be competitive; the battery will be charged overnight by electrical-resistance heating or the combustion of nonpetroleum fuels. The system would be most appropriate for urban or nonurban vehicles in stop-and-go applications, e.g., buses and delivery vehicles.

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

    SciTech Connect

    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.

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

    SciTech Connect

    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.

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

    SciTech Connect

    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

  20. Oxygen enriched combustion system performance study. Phase 2: 100 percent oxygen enriched combustion in regenerative glass melters, Final report

    SciTech Connect

    Tuson, G.B.; Kobayashi, H.; Campbell, M.J.

    1994-08-01

    The field test project described in this report was conducted to evaluate the energy and environmental performance of 100% oxygen enriched combustion (100% OEC) in regenerative glass melters. Additional objectives were to determine other impacts of 100% OEC on melter operation and glass quality, and to verify on a commercial scale that an on-site Pressure Swing Adsorption oxygen plant can reliably supply oxygen for glass melting with low electrical power consumption. The tests constituted Phase 2 of a cooperative project between the United States Department of Energy, and Praxair, Inc. Phase 1 of the project involved market and technical feasibility assessments of oxygen enriched combustion for a range of high temperature industrial heating applications. An assessment of oxygen supply options for these applications was also performed during Phase 1, which included performance evaluation of a pilot scale 1 ton per day PSA oxygen plant. Two regenerative container glass melters were converted to 100% OEC operation and served as host sites for Phase 2. A 75 ton per day end-fired melter at Carr-Lowrey Glass Company in Baltimore, Maryland, was temporarily converted to 100% OEC in mid- 1990. A 350 tpd cross-fired melter at Gallo Glass Company in Modesto, California was rebuilt for permanent commercial operation with 100% OEC in mid-1991. Initially, both of these melters were supplied with oxygen from liquid storage. Subsequently, in late 1992, a Pressure Swing Adsorption oxygen plant was installed at Gallo to supply oxygen for 100% OEC glass melting. The particular PSA plant design used at Gallo achieves maximum efficiency by cycling the adsorbent beds between pressurized and evacuated states, and is therefore referred to as a Vacuum/Pressure Swing Adsorption (VPSA) plant.

  1. DOE - NNSA/NFO -- Featured Items

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Featured Items includeslanguage.htm Featured Items The Nevada Field Office Featured Items section provides quick access to brief program updates and some of the more popular new ...

  2. 1999 Commercial Buildings Characteristics--Conservation Features...

    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...

  3. Features

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Faces of Science The people behind our science Radical Supercomputing Extreme speeds, big data, powerful simulations 70 Years of Innovation Addressing the nation's most complex ...

  4. The MCLIB library: New features

    SciTech Connect

    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.

  5. ARM - Features and Releases Archive

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CenterFeaturesFeatures and Releases Archive Media Contact Hanna Goss hanna-dot-goss-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes118 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 7 ARM Mobile Facility 2 47 ARM Mobile Facility 3 1 BAECC 1 BBOP 4 CARES 1 Data Quality Office 2 ENA 2 GOAMAZON 7 HI-SCALE 5 LASIC 3 MAGIC 15 MC3E 17 PECAN 3 SGP 8 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All

  6. Alternative Fuels Data Center: News and Features

    Alternative Fuels and Advanced Vehicles 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 Alternative Fuels Data Center: News and Features on AddThis.com... More in this section...

  7. NIF featured on BBC "Horizon"

    SciTech Connect

    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.

  8. NIF featured on BBC "Horizon"

    ScienceCinema

    Brian Cox

    2016-07-12

    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.

  9. Feature Stories | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all 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

    U.S. Department of Energy (DOE) - all 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. Regenerative amplification of femtosecond pulses: Design and construction of a sub-100fs, {mu}J laser system

    SciTech Connect

    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.

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

    SciTech Connect

    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.

  13. Controlling emissions from a black liquor fluidized bed evaporator (Copeland reactor) using a regenerative thermal oxidizer and a prefilter

    SciTech Connect

    Grzanka, R.

    1997-12-31

    This paper reports on an intriguing pilot project developed to control air emissions from a pulp mill. Testing is complete, and the results show favorable emissions reductions. Stone Container Corporation, REECO, NCASI, the Ohio DEP, and the US EPA, have all worked together and approved the installation of control equipment, for VOC and HAP emissions under Presumptive MACT, setting the standard for the Copeland Reactor process in a semi chem pulp mill. The equipment, once operational, will reduce VOC and CO emissions by greater than 90%. This installation will be done at one seventh the cost of the significant process modifications required to accomplish the same emission reduction. In addition, increased process operating efficiency will be achieved with the use of an energy recovery system. The process is a black liquor fluidized bed boiler, which is used to generate sodium carbonate from the black liquor. The vapor emissions were high in VOCs, CO and particulate. After much study and testing, a wet electrostatic precipitator was chosen as the filter system for particulate control, followed by a regenerative thermal oxidizer for VOC and HAP control, finally an air-to-air heat exchanger is being used to preheat the combustion air entering the process.

  14. Feature Stories | The Ames Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Feature Stories Materials Preparation Center turns 35 The Materials Preparation Center is celebrating 35 years of providing the world's highest quality rare-earth metals and custom alloys that researchers and industry can find nowhere else. Take a look at MPC's history and what takes place in the southeast corner of the Metals Development building. (11/3/2016) READ MORE Ames Laboratory Scientists Leave Their Mark on Future Researchers Eight out of the past 10 years, Ames Laboratory chemist Aaron

  15. Design of Roadside Safety Features

    U.S. Department of Energy (DOE) - all 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

  16. Sustainable Transportation and National Parks Initiative Featured...

    Energy Saver

    Sustainable Transportation and National Parks Initiative Featured in Magazine Sustainable Transportation and National Parks Initiative Featured in Magazine October 18, 2013 - ...

  17. PHISICS: New Features and Advancements

    SciTech Connect

    C. Rabiti; Y. Wang; G. Palmiotti; H. Hiruta; J. Cogliati; A. Alfonsi; A. EPiney; T. Grimmett

    2011-06-01

    The PHISICS (Parallel and Highly Innovative Simulation for INL Code System) software is under an intensive development at INL. In the last months new features have been added and improvements of the previously existing one performed. The modular approach has created a friendly development environment that allows a quick expansion of the capabilities. In the last months a little amount of work has been dedicated to the improvement of the spherical harmonics based nodal transport solver while the implementation of a solver based on the self adjoint formulation of the discrete ordinate is in the test phase on structured mesh. PHISICS now include a depletion solver with the option to use two different algorithms for the solution of the Bateman equation: the Taylor development of the exponential matrix and the Chebyshev Rational Approximation Method. The coupling with RELAP5 is also available at least in the steady state search mode. The coupling between RELAP5 and PHISICS can also take advantage of the new cross section interpolation module so that the coupling could be performed using an arbitrary number of energy groups.

  18. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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, west of

  19. @ work' video segment features Robotic Software Engineer

    ScienceCinema

    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.

  20. @ work' video segment features Robotic Software Engineer

    SciTech Connect

    Idaho National Laboratory

    2008-03-27

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

  1. Satellite stories featured in Lab lecture series

    U.S. Department of Energy (DOE) - all 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

  2. Composite, ordered material having sharp surface features

    DOEpatents

    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.

  3. Flexible feature interface for multimedia sources

    DOEpatents

    Coffland, Douglas R.

    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.

  4. Demonstration Projects Feature Innovative Offshore Wind Technologies |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Demonstration Projects Feature Innovative Offshore Wind Technologies Demonstration Projects Feature Innovative Offshore Wind Technologies October 24, 2016 - 3:40pm Addthis From floating foundations to twisted jacket and Mono Bucket foundations, some of the nation's most inventive offshore wind technologies are featured in a portfolio of advanced offshore wind energy demonstration projects that the Energy Department has been supporting since 2012. "All of these

  5. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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...

  6. LC-IMS-MS Feature Finder

    SciTech Connect

    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.

  7. LC-IMS-MS Feature Finder

    Energy Science and Technology Software Center

    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 thatmore » includes associated information about the detected features.« less

  8. Exploring quantum control landscapes: Topology, features, and...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Exploring quantum control landscapes: Topology, features, and optimization scaling Citation Details In-Document Search Title: Exploring quantum control landscapes: ...

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

    OpenEI (Open Energy Information) [EERE & EIA]

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

  10. Human gingiva-derived mesenchymal stem cells are superior to bone marrow-derived mesenchymal stem cells for cell therapy in regenerative medicine

    SciTech Connect

    Tomar, Geetanjali B.; Srivastava, Rupesh K.; Gupta, Navita; Barhanpurkar, Amruta P.; Pote, Satish T.; Jhaveri, Hiral M.; Mishra, Gyan C.; Wani, Mohan R.

    2010-03-12

    Mesenchymal stem cells (MSCs) are capable of self-renewal and differentiation into multiple cell lineages. Presently, bone marrow is considered as a prime source of MSCs; however, there are some drawbacks and limitations in use of these MSCs for cell therapy. In this study, we demonstrate that human gingival tissue-derived MSCs have several advantages over bone marrow-derived MSCs. Gingival MSCs are easy to isolate, homogenous and proliferate faster than bone marrow MSCs without any growth factor. Importantly, gingival MSCs display stable morphology and do not loose MSC characteristic at higher passages. In addition, gingival MSCs maintain normal karyotype and telomerase activity in long-term cultures, and are not tumorigenic. Thus, we reveal that human gingiva is a better source of MSCs than bone marrow, and large number of functionally competent clinical grade MSCs can be generated in short duration for cell therapy in regenerative medicine and tissue engineering.

  11. LBS GatlingGun13A (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and ... public from the National Technical Information Service, Springfield, VA at www.ntis.gov. ...

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

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Previous shipments sent out for recycle were delivered to Interface Carpet in Atlanta, GA, where the manufacture has an extensive recycling program that recycles vinyl backed ...

  13. Nature Climate Change features Los Alamos forest research

    U.S. Department of Energy (DOE) - all 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. Nature Climate Change features Los Alamos forest research

    U.S. Department of Energy (DOE) - all 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...

  15. Image fusion using sparse overcomplete feature dictionaries

    SciTech Connect

    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.

  16. ARM - 2010 AMS Presentations Featuring ARM Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SGP 6 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...

  17. ARM - 2009 AGU Presentations Featuring ARM Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SGP 6 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...

  18. ARM - 2014 AMS Presentations Featuring ARM Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SGP 6 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...

  19. Feature Clustering for Accelerating Parallel Coordinate Descent

    SciTech Connect

    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.

  20. Category:Topographic Features | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    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...

  1. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    January 6, 2010 Feature Stories and Releases Cirrus Clouds Hold Clues to Climate Bookmark and Share Research flights will obtain most comprehensive data set to-date for climate ...

  2. Feature Based Measuring, Version 2.1

    Energy Science and Technology Software Center

    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.

  3. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  4. Topology-based Feature Definition and Analysis

    SciTech Connect

    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.

  5. A Collection of Features for Semantic Graphs

    SciTech Connect

    Eliassi-Rad, T; Fodor, I K; Gallagher, B

    2007-05-02

    Semantic graphs are commonly used to represent data from one or more data sources. Such graphs extend traditional graphs by imposing types on both nodes and links. This type information defines permissible links among specified nodes and can be represented as a graph commonly referred to as an ontology or schema graph. Figure 1 depicts an ontology graph for data from National Association of Securities Dealers. Each node type and link type may also have a list of attributes. To capture the increased complexity of semantic graphs, concepts derived for standard graphs have to be extended. This document explains briefly features commonly used to characterize graphs, and their extensions to semantic graphs. This document is divided into two sections. Section 2 contains the feature descriptions for static graphs. Section 3 extends the features for semantic graphs that vary over time.

  6. Feature recognition applications in mesh generation

    SciTech Connect

    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.

  7. Supai salt karst features: Holbrook Basin, Arizona

    SciTech Connect

    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.

  8. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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. New Features of the Edison XC30

    U.S. Department of Energy (DOE) - all 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

  10. Development of a He{sup 3}−He{sup 4} sub Kelvin active magnetic regenerative refrigerator (AMRR) with no moving parts

    SciTech Connect

    Jahromi, A. E.; Miller, F. K.

    2014-01-29

    Current state of the art particle and photon detectors such as Transition Edge Sensors (TES) and Microwave Kinetic Inductance Detectors (MKID) use large arrays of sensors or detectors for space science missions. As the size of these space science detectors increases, future astrophysics missions will require sub-Kelvin cooling over larger areas. This leads to not only increased cooling power requirements, but also a requirement for distributed sub-Kelvin cooling. We propose an active Magnetic Regenerative Refrigerator (AMRR) that uses a Superfluid Magnetic Pump (SMP) to circulate liquid He{sup 3}−He{sup 4} through a magnetic regenerator to provide the necessary cooling at sub-Kelvin temperatures. Such system will be capable of distributing the cooling load to a relatively large array of objects. One advantage of using a fluid for heat transfer in such systems is to isolate components such as the superconducting magnets from detectors that are sensitive to magnetic fields. Another advantage of the proposed tandem AMRR is that it does not need Gas Gap Heat Switches (GGHS) to transfer heat during various stages of the magnetic cooling. Our proposed system consists of four superconducting magnets, one superleak, and three heat exchangers. It will operate continuously with no moving parts and it will be capable of providing the necessary cooling at sub-Kelvin temperatures for future space science applications.

  11. 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

    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.

  12. General features of Hugoniots-II

    SciTech Connect

    Johnson, J.D.

    1997-01-01

    The author has derived a differential version of the Principal Hugoniot jump relations for a shock wave. From this algebraic equation, relating equation of state and U{sub s} - U{sub p} Hugoniot variables, I explain the general features of the Hugoniot, including two regions of linearity, limiting forms, and insensitivity to shell structure.

  13. Fizzy. Feature subset selection for metagenomics

    SciTech Connect

    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 between 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.

  14. Fizzy. Feature subset selection for metagenomics

    DOE PAGES [OSTI]

    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

  15. Geothermal Energy Featured on NBC's Today Show

    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.

  16. Semantic Features for Classifying Referring Search Terms

    SciTech Connect

    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.

  17. NREL Open House Features Energy Activities, Tours

    U.S. Department of Energy (DOE) - all 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.

  18. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    April 2, 2007 [Feature Stories and Releases] ARM Mobile Facility Begins Precipitation Investigation in the Black Forest Bookmark and Share Raindrops to reveal clues about climate in complex terrain Contact: Lynne Roeder, ARM Public Information Officer, 509.372.4331 Beginning today, the ARM Mobile Facility will collect data for 9 months in support of a long-term precipitation study in the Black Forest region of Germany. Requested by researchers at the University of Hohenheim, the facility is one

  19. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  20. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  1. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  2. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  3. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  4. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  5. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  6. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  7. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  8. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    August 1, 2005 [Feature Stories and Releases] Connection Between Clouds and Climate Highlighted in a Special Section of Scientific Journal Bookmark and Share Press Release Media Contact: Lynne Roeder, 509.372.4331 A key uncertainty in computer simulations of climate change is the broad range of cloud-climate feedback processes. Natural phenomena that occur in cloud lifecycles present a difficult challenge to scientists studying how dynamic cloud conditions affect the sun's incoming and Earth's

  9. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1, 2011 [Feature Stories and Releases] Aloha! Mobile Facility to Sail the Pacific; Southern Great Plains Hosts Aerosol and Carbon Campaigns Bookmark and Share Each year, the ARM Climate Research Facility reviews proposals to use key components of the Facility for extended or intensive field campaigns. The Department of Energy recently announced the selection of new field campaigns that will take place from 2012 through 2013. They include an investigation of marine cloud processes over the

  10. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  11. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  12. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  13. ARM - Feature Stories and Releases Article

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    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

  14. ARM - Feature Stories and Releases Article

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    7, 2012 [Facility News, Feature Stories and Releases] Aerosol Research Keeps "PACE" with Ecosystem Science Bookmark and Share The science and operations team at Los Alamos National Laboratory poses in front of the MAOS Aerosol and Chemistry units. From left to right: Kyle Gorkowski, Alison Aitken, Paul Ortega, Anna Trugman, Kim Nitschke, Manvendra Dubey, Caleb Arata and Curt Dvonch. The science and operations team at Los Alamos National Laboratory poses in front of the MAOS Aerosol and

  15. ARM - Feature Stories and Releases Article

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    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

  16. ARM - Feature Stories and Releases Article

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    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

  17. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  18. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  19. ARM - Feature Stories and Releases Article

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    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

  20. ARM - Feature Stories and Releases Article

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    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 intersection of Arctic land and sea. Instruments take atmospheric measurements from the roof of a new Department of Energy climate observation station at Oliktok Point, Alaska. More capabilities will be added in the coming year, including radars, lidars, and aerosol observing instrumentation. Instruments take

  1. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    30, 2013 [Facility News, Feature Stories and Releases] Small Footprint, Big Shoes: Stepping Out at Nauru Bookmark and Share Kim Nitschke (white shirt) joined members of the Nauru Government for a walk down memory lane at the ARM Nauru site to help commemorate the site decommissioning, recognized at a closing reception on September 23, 2013. Kim Nitschke (white shirt) joined members of the Nauru Government for a walk down memory lane at the ARM Nauru site to help commemorate the site

  2. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  3. ARM - Feature Stories and Releases Article

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    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

  4. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  5. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    June 2, 2014 [Feature Stories and Releases] First Phase of Research Flights Completed for GOAMAZON Bookmark and Share Data from the condensation particle counter (CPC) onboard the Gulfstream-1 research aircraft clearly show the aerosol plume between Manaus and the ARM Mobile Facility site, or T3, at Manacapuru. Data from the condensation particle counter (CPC) onboard the Gulfstream-1 research aircraft clearly show the aerosol plume between Manaus and the ARM Mobile Facility site, or T3, at

  6. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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,

  7. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    May 13, 2009 [Feature Stories and Releases] Preparations Heat Up for Field Campaign in Chile Bookmark and Share Test period simulates daily operations for remote deployment in Atacama Desert Science and operations team members observe data transmitted from the weather balloon launched during training for RHUBC-II. Science and operations team members observe data transmitted from the weather balloon launched during training for RHUBC-II. At an elevation of more than 5000 meters on the Atacama

  8. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  9. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  10. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    February 3, 2015 [Facility News, Feature Stories and Releases] North Slope Megasite Preparations Take Form Bookmark and Share Third mobile facility completes first year of data collection in northern Alaska This fall, the AMF3 installation was completed with the addition of scanning and vertical-pointing radars, as well as a Raman lidar. This fall, the AMF3 installation was completed with the addition of scanning and vertical-pointing radars, as well as a Raman lidar. Another first of many to

  11. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  12. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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,

  13. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  14. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    October 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 Facility, can be flown through clouds to record three-dimensional images of the intricate workings inside. The results of a study using the instrument were recently published in Science. Photo courtesy of NCAR. The HOLODEC, developed in part with funding from the ARM Facility, can be flown through clouds to

  15. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  16. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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 they

  17. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    29, 2016 [Feature Stories and Releases] Tracking Clouds Down Under Bookmark and Share ARM experiment to characterize unique properties of clouds in the Southern Ocean Macquarie Island is a remote grassy outcrop that lies about half-way between New Zealand and Antarctica. Macquarie Island is a remote grassy outcrop that lies about half-way between New Zealand and Antarctica. While penguins and seals are the main inhabitants of Macquarie Island, a remote grassy outcrop which lies about half-way

  18. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  19. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    May 23, 2016 [Feature Stories and Releases] Smoke From African Fires: Studying its Impact on Low Clouds Bookmark and Share New 17-month ARM campaign investigates airborne carbonaceous particles Beginning June 1, the first ARM Mobile Facility is deployed to Ascension Island in the southeast Atlantic Ocean to study how smoke transported from biomass burning in Southern Africa effects low-hanging clouds. Beginning June 1, the first ARM Mobile Facility is deployed to Ascension Island in the

  20. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    August 15, 2016 [Feature Stories and Releases] Spying on Thin Ice Clouds Bookmark and Share Experiment seeks to elucidate impacts of unique polar clouds Observations of thin ice clouds are scarce, contributing to a large range of uncertainties in present-day and future simulations of the polar climates. Data from TICFIRE and ARM's Barrow facility will help to develop a new spaced-based instrument to measure these thin ice clouds. Observations of thin ice clouds are scarce, contributing to a

  1. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    June 30, 2005 [Feature Stories and Releases] New Mobile Atmospheric Laboratory Gathering Weather and Climate Change Data on the California Coast Bookmark and Share Are Aerosols Reducing Coastal Drizzle and Increasing Cloud Cover? Scientists sponsored by the Department of Energy (DOE) are conducting a six-month atmospheric research campaign at the Point Reyes National Seashore, in Marin County, California. The experiment's goal is to help researchers understand how aerosols-small particles such

  2. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  3. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  4. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    19, 2016 [Feature Stories and Releases] ARM Principal Investigator Quoted in Science Bookmark and Share LASIC principal investigator was quoted in a Science news story about African smoke and ocean clouds. Paquita Zuidema, University of Miami Paquita Zuidema, University of Miami Science magazine quoted Paquita Zuidema, University of Miami, in her role as lead scientist for ARM's Layered Atlantic Smoke Interactions with Clouds (LASIC) campaign. Published August 25, "NASA Aircraft Probe

  5. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  6. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  7. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  8. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  9. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  10. Latest Feature Video | The Ames Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Latest Feature Video Sensitive Instrument Facility Dedication Secretary of Energy Ernest Moniz helped cut the ribbon to dedicate Ames Laboratory's Sensitive Instrument Facility on May 6, 2016. Anderson named to National Academy of Inventors Ames Laboratory senior metallurgist and 2015 National Academy of Inventors inductee, Iver Anderson, talks about being an inventor and having the drive to solve problems, using information from many different sources. CCI Virtual Tour Daniel Bouk, a student in

  11. Structural features of dielectric oxide laser ceramics

    SciTech Connect

    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)

  12. Special Feature: Five Questions for Sudip Dosanjh

    U.S. Department of Energy (DOE) - all 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

  13. Special Feature: Supercomputers Map Our Changing Climate

    U.S. Department of Energy (DOE) - all 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

  14. Fall Lectures Feature Life of Einstein; Exploring Our World With...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fall Lectures Feature Life of Einstein; Exploring Our World With Particle Accelerators Fall Lectures Feature Life of Einstein; Exploring Our World With Particle Accelerators ...

  15. Startup Design Features for Supercritical Power Conversion Systems...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Find More Like This Return to Search Startup Design Features for Supercritical Power ... DescriptionThe new design features and procedures will improve the already advanced ...

  16. Category:Modern Geothermal Features | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

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

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

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Featured on Journal of Physical Chemistry A Cover - Sandia Energy Energy Search Icon ... Sandia Research Featured on Journal of Physical Chemistry A Cover HomeEnergy, Materials ...

  18. Table-like magnetocaloric effect in Gd{sub 56}Ni{sub 15}Al{sub 27}Zr{sub 2} alloy and its field independence feature

    SciTech Connect

    Agurgo Balfour, E.; Ma, Z.; Fu, H. E-mail: rockingsandstorm@163.com; Wang, L.; Luo, Y.; Hadimani, R. L.; Jiles, D. C.; Wang, S. F. E-mail: rockingsandstorm@163.com

    2015-09-28

    In order to obtain “table-like” magnetocaloric effect (MCE), multiple-phase Gd{sub 56}Ni{sub 15}Al{sub 27}Zr{sub 2} alloy was prepared by arc-melting followed by suck-casting method. Powder x-ray diffraction and calorimetric measurements reveal that the sample contains both glassy and crystalline phases. The fraction of the glassy phase is about 62%, estimated from the heat enthalpy of the crystallization. The crystalline phases, Gd{sub 2}Al and GdNiAl further broadened the relatively wider magnetic entropy change (−ΔS{sub M}) peak of the amorphous phase, which resulted in the table-like MCE over a maximum temperature range of 52.5 K to 77.5 K. The plateau feature of the MCE was found to be nearly independent of the applied magnetic field from 3 T to 5 T. The maximum −ΔS{sub M} value of the MCE platforms is 6.0 J/kg K under applied magnetic field change of 5 T. Below 3 T, the field independence of the table-like feature disappears. The relatively large constant values of −ΔS{sub M} for the respective applied magnetic fields have promising applications in magnetic refrigeration using regenerative Ericsson cycle.

  19. ARM - Feature Stories and Releases Article

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    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

  20. ARM - Feature Stories and Releases Article

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    , 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.

  1. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  2. ARM - Feature Stories and Releases Article

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    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

  3. ARM - Feature Stories and Releases Article

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    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

  4. ARM - Feature Stories and Releases Article

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    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

  5. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  6. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  7. ARM - Feature Stories and Releases Article

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    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

  8. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  9. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    22, 2015 [Feature Stories and Releases] Sleepless on the Great Plains Bookmark and Share Scientists will collect atmospheric data between sunset and 6:00 a.m. during the 25 targeted nights of the PECAN field campaign, weather permitting. Scientists will collect atmospheric data between sunset and 6:00 a.m. during the 25 targeted nights of the PECAN field campaign, weather permitting. PECAN researchers to pull all-nighters studying storms More than 100 researchers and dozens of support staff will

  10. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  11. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  12. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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,"

  13. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  14. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  15. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    May 23, 2016 [Feature Stories and Releases] 25 Years of ARM Shows Benefits of Having Heads in the Clouds Bookmark and Share How ARM transformed the culture of atmospheric science This is the first article in a series about the first 25 years of the ARM Climate Research Facility. ARM Timeline A monograph published online this spring by the American Meteorological Society tells the history-25 years of it so far-of what is now called the Atmospheric Radiation Measurement (ARM) Climate Research

  16. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    March 31, 2008 [Feature Stories and Releases] Aerosols and Clouds: A Complex Climate Connection Bookmark and Share New data will help researchers examine cloud composition and resulting effects on climate cycles Contact: Lynne Roeder, ARM Public Information Officer, 509.372.4331 Clouds are more than just interesting shapes in the sky. They modulate the atmosphere that allows us to live and breathe. But what recipe does the sky follow that combines just the right amount-and type-of clouds to keep

  17. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  18. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  19. ARM - Feature Stories and Releases Article

    U.S. Department of Energy (DOE) - all 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

  20. ENGINEERED BARRIER SYSTEM FEATURES, EVENTS AND PROCESSES

    SciTech Connect

    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

  1. DVU Featured Training & Events Form

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    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

  2. Method of identifying features in indexed data

    DOEpatents

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

  3. Features, Events, and Processes: Disruptive Events

    SciTech Connect

    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.

  4. Component with inspection-facilitating features

    DOEpatents

    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.

  5. Energy conservation from regenerative incineration

    SciTech Connect

    Pennington, R.L.

    1982-06-01

    The oil embargo in the winter of 1973 covered the nation with a serious energy crisis. Although the ''gas lines'' have subsided, sky-rocketing fuel costs and diminishing energy supplies linger on. Projected U.S. energy demands indicate normal energy requirements over a normal growth rate. However, when compared with the projected U.S. energy supplies, a very significant energy deficit may exist in the near future. Although coal and nuclear show substantial potential as energy sources, it is unlikely that they will fill the gap between energy demands and the gas and oil supplies. In view of the Three-Mile Island nuclear incident, and cutbacks in the state of Washington, it is doubtful that the 13% contribution to the energy supply in the part of nuclear power will ever materialize. Although coal supplies are very abundant, the development of coal technology will not meet the next decade's energy requirements as it is indicated by the fact that coal is supplying far less energy than forecasted by the government.

  6. Richards Barrier LA Reference Design Feature Evaluation

    SciTech Connect

    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

  7. Features, Events, and Processes: Disruptive Events

    SciTech Connect

    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. Features, Events, and Processes: system Level

    SciTech Connect

    D. McGregor

    2004-10-15

    The purpose of this analysis report is to evaluate and document the inclusion or exclusion of the system-level features, events, and processes (FEPs) with respect to modeling 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 screening decisions. This information is required by the U.S. Nuclear Regulatory Commission (NRC) at 10 CFR 63.113 (d, e, and f) (DIRS 156605). The system-level FEPs addressed in this report typically are overarching in nature, rather than being focused on a particular process or subsystem. As a result, they are best dealt with at the system level rather than addressed within supporting process-level or subsystem-level analyses and models reports. The system-level FEPs also tend to be directly addressed by regulations, guidance documents, or assumptions listed in the regulations; or are addressed in background information used in development of the regulations. For included FEPs, this analysis 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 the TSPA-LA (i.e., why the FEP is excluded). The initial version of this report (Revision 00) was developed to support the total system performance assessment for site recommendation (TSPA-SR). This revision addresses the license application (LA) FEP List (DIRS 170760).

  9. Notre Dame EFRC featured during nationally televised football...

    Office of Science (SC)

    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 ...

  10. PARC Seminar Series featuring David Tiede | Photosynthetic Antenna...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  11. NNSA Highly Enriched Uranium Removal Featured on The Rachel Maddow...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NNSA 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 ...

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

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop Music Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop Music NEWPORT NEWS, Va., Feb. ...

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

    Energy Saver

    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 ...

  14. Science.gov Features Food Safety, Classroom Resources, and Immunization

    Office of Scientific and Technical Information (OSTI)

    Websites | OSTI, US Dept of Energy Office of Scientific and Technical Information Features Food Safety, Classroom Resources, and Immunization Websites Back to the OSTI News Listing for 2008 Science.gov, the go-to portal for government science information, is currently featuring food safety, classroom resources, and immunization websites. Science.gov's featured sites are rotated frequently, but you can access a comprehensive list of previous features by going to the Science.gov website and

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

    U.S. Department of Energy (DOE) - all 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

  16. Systems and processes for identifying features and determining feature associations in groups of documents

    DOEpatents

    Rose, Stuart J.; Cowley, Wendy E.; Crow, Vernon L.

    2016-01-12

    Systems and computer-implemented processes for identification of features and determination of feature associations in a group of documents can involve providing a plurality of keywords identified among the terms of at least some of the documents. A value measure can be calculated for each keyword. High-value keywords are defined as those keywords having value measures that exceed a threshold. For each high-value keyword, term-document associations (TDA) are accessed. The TDA characterize measures of association between each term and at least some documents in the group. A processor quantifies similarities between unique pairs of high-value keywords based on the TDA for each respective high-value keyword and generates a similarity matrix that indicates one or more sets that each comprise highly associated high-value keywords.

  17. Physics Features of TRU-Fueled VHTRs

    DOE PAGES [OSTI]

    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

  18. Trajectory analysis via a geometric feature space approach

    SciTech Connect

    Rintoul, Mark D.; Wilson, Andrew T.

    2015-10-05

    This study aimed to organize a body of trajectories in order to identify, search for and classify both common and uncommon behaviors among objects such as aircraft and ships. Existing comparison functions such as the Fréchet distance are computationally expensive and yield counterintuitive results in some cases. We propose an approach using feature vectors whose components represent succinctly the salient information in trajectories. These features incorporate basic information such as the total distance traveled and the distance between start/stop points as well as geometric features related to the properties of the convex hull, trajectory curvature and general distance geometry. Additionally, these features can generally be mapped easily to behaviors of interest to humans who are searching large databases. Most of these geometric features are invariant under rigid transformation. Furthermore, we demonstrate the use of different subsets of these features to identify trajectories similar to an exemplar, cluster a database of several hundred thousand trajectories and identify outliers.

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

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    February | Jefferson Lab 2007 Science Series features two lectures in February Jefferson Lab's Spring 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

  20. DOE Science Showcase - Featured Climate Change Research from...

    Office of Scientific and Technical Information (OSTI)

    Featured Climate Change Research from DOE Databases Search Results from DOE Databases View research documents, citations, accomplishments, patents, and projects related to climate ...

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

    U.S. Department of Energy (DOE) - all 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)...

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

    U.S. Department of Energy (DOE) - all 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,"...

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

    OpenEI (Open Energy Information) [EERE & EIA]

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

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

    U.S. Department of Energy (DOE) - all 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...

  5. 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 ...

  6. 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. beopt_2-0_features.pdf (594.39 KB) More Documents & Publications Analysis: Targeting Zero Net Energy - 2014 BTO Peer Review Advanced Technical

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

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Los Alamos technology to be featured on CSI: NY The multipurpose "sampler gun" rapidly ... Mountain Daylight Time April 2 on CBS. The multipurpose "sampler gun" rapidly collects and ...

  8. Feature based volume decomposition for automatic hexahedral mesh generation

    SciTech Connect

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

    2000-02-21

    Much progress has been made through these years to achieve automatic hexahedral mesh generation. While general meshing algorithms that can take on general geometry are not there yet; many well-proven automatic meshing algorithms now work on certain classes of geometry. This paper presents a feature based volume decomposition approach for automatic Hexahedral Mesh generation. In this approach, feature recognition techniques are introduced to determine decomposition features from a CAD model. The features are then decomposed and mapped with appropriate automatic meshing algorithms suitable for the correspondent geometry. Thus a formerly unmeshable CAD model may become meshable. The procedure of feature decomposition is recursive: sub-models are further decomposed until either they are matched with appropriate meshing algorithms or no more decomposition features are detected. The feature recognition methods employed are convexity based and use topology and geometry information, which is generally available in BREP solid models. The operations of volume decomposition are also detailed in the paper. The final section, the capability of the feature decomposer is demonstrated over some complicated manufactured parts.

  9. PARC Seminar Series featuring Steven Boxer | Photosynthetic Antenna

    U.S. Department of Energy (DOE) - all 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

  10. Unsupervised Feature Learning for High-Resolution Satellite Image Classification

    SciTech Connect

    Cheriyadat, Anil M

    2013-01-01

    The rich data provided by high-resolution satellite imagery allow us to directly model geospatial neighborhoods by understanding their spatial and structural patterns. In this paper we explore an unsupervised feature learning approach to model geospatial neighborhoods for classification purposes. While pixel and object based classification approaches are widely used for satellite image analysis, often these approaches exploit the high-fidelity image data in a limited way. In this paper we extract low-level features to characterize the local neighborhood patterns. We exploit the unlabeled feature measurements in a novel way to learn a set of basis functions to derive new features. The derived sparse feature representation obtained by encoding the measured features in terms of the learned basis function set yields superior classification performance. We applied our technique on two challenging image datasets: ORNL dataset representing one-meter spatial resolution satellite imagery representing five land-use categories and, UCMERCED dataset consisting of 21 different categories representing sub-meter resolution overhead imagery. Our results are highly promising and, in the case of UCMERCED dataset we outperform the best results obtained for this dataset. We show that our feature extraction and learning methods are highly effective in developing a detection system that can be used to automatically scan large-scale high-resolution satellite imagery for detecting large-facility.

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

    U.S. Department of Energy (DOE) - all 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...

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

    U.S. Department of Energy (DOE) - all 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...

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

    U.S. Department of Energy (DOE) - all 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...

  14. Science.gov, Now with Multimedia, New Search Features, Spanish...

    Office of Scientific and Technical Information (OSTI)

    Information October 9, 2012 Science.gov, Now with Multimedia, New Search Features, Spanish Translations Spanish Version Debuted Oak Ridge, TN - Science.gov, the gateway to U.S. ...

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

    Office of Scientific and Technical Information (OSTI)

    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 ...

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

    Office of Scientific and Technical Information (OSTI)

    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 ...

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

    U.S. Department of Energy (DOE) - all 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...

  18. Discrete Feature Approach for Heterogeneous Reservoir Production Enhancement

    SciTech Connect

    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.

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

    U.S. Department of Energy (DOE) - all 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...

  20. Wavelet Algorithm for Feature Identification and Image Analysis

    Energy Science and Technology Software Center

    2005-10-01

    WVL are a set of python scripts based on the algorithm described in "A novel 3D wavelet-based filter for visualizing features in noisy biological data, " W. C. Moss et al., J. Microsc. 219, 43-49 (2005)

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

    SciTech Connect

    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.

  2. PARC Seminar Series featuring Rienk van Grondelle | Photosynthetic Antenna

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Research Center Rienk van Grondelle PARC Seminar Series featuring Rienk van Grondelle The Quantum Design of Photosynthesis October 4, 2016 - 11:00am Brauer Hall room 12 Click here to view Flyer

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

    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.

  4. OSTI features Nobel Prize winner Leon Lederman | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    The OSTI-developed and -managed Web site, DOE R&D Accomplishments, has posted a feature highlighting Leon Lederman, who proposed the idea that eventually became the Fermi National ...

  5. NREL: Transportation Research - NPR Features Transportation and Hydrogen

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Systems Center Director Chris Gearhart NPR Features Transportation and Hydrogen Systems Center Director Chris Gearhart September 30, 2016 National Public Radio (NPR) recently featured the National Renewable Energy Laboratory's (NREL's) Chris Gearhart, director of NREL's Transportation and Hydrogen Systems Center, in an interview on the affordability of low-emission vehicles. "I come to work every day because I think that getting greenhouse gas emissions out of the transportation sector

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

    SciTech Connect

    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.

  7. Macomb Community College featured at OSTI Community College Connections |

    Office of Scientific and Technical Information (OSTI)

    OSTI, US Dept of Energy Office of Scientific and Technical Information Macomb Community College featured at OSTI Community College Connections Back to the OSTI News Listing for 2011 From biological sciences to automotive engineering, Macomb Community College has a wide range of programs now featured at the Community College Connections website. Read about Macomb Community College and other colleges and universities benefiting from Department of Energy research and development at

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    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

  9. Feature-Based Statistical Analysis of Combustion Simulation Data

    SciTech Connect

    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

  10. Parade of Homes Display Features Energy-Saving Ideas

    U.S. Department of Energy (DOE) - all 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

  11. Multi-tube fuel nozzle with mixing features

    DOEpatents

    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.

  12. 20th Century Reanalysis Project Featured in HPCWire Podcast

    U.S. Department of Energy (DOE) - all 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

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy OE's SGIG Program Featured in International Publication OE's SGIG Program Featured in International Publication April 6, 2012 - 2:10pm Addthis An article in the March 2012 issue of the quarterly publication Metering International focuses on DOE's Smart Grid Investment Grant program, highlighting how the program is improving the reliability and resiliency of the US electric grid. The article examines the need to protect the grid and the benefits of modernization, including reduced

  14. NERSC Helps Physicists ID New Molecules With Unique Features

    U.S. Department of Energy (DOE) - all 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

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

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    and football | Jefferson Lab events -- featuring magic and football Jefferson Lab announces two Fall Science Series 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

  16. Sustainable Transportation and National Parks Initiative Featured in

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    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

  17. INL featured in video presented at Copenhagen conference

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    INL featured in video presented at Copenhagen conference IDAHO FALLS - Idaho National Laboratory footage and research are featured in a video presented at the World Climate Change Summit in Copenhagen today. President Obama introduced the video, which is titled "America's Response to Climate Change" and discusses how varied energy technologies can combat climate change. In October, the Department of Energy's Public Affairs office asked the national laboratories to suggest ideas about

  18. Feature-Based Measuring Advisor, Version 2.1

    Energy Science and Technology Software Center

    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

  19. Trajectory analysis via a geometric feature space approach

    DOE PAGES [OSTI]

    Rintoul, Mark D.; Wilson, Andrew T.

    2015-10-05

    This study aimed to organize a body of trajectories in order to identify, search for and classify both common and uncommon behaviors among objects such as aircraft and ships. Existing comparison functions such as the Fréchet distance are computationally expensive and yield counterintuitive results in some cases. We propose an approach using feature vectors whose components represent succinctly the salient information in trajectories. These features incorporate basic information such as the total distance traveled and the distance between start/stop points as well as geometric features related to the properties of the convex hull, trajectory curvature and general distance geometry. Additionally,more » these features can generally be mapped easily to behaviors of interest to humans who are searching large databases. Most of these geometric features are invariant under rigid transformation. Furthermore, we demonstrate the use of different subsets of these features to identify trajectories similar to an exemplar, cluster a database of several hundred thousand trajectories and identify outliers.« less

  20. Volume Decomposition and Feature Recognition for Hexahedral Mesh Generation

    SciTech Connect

    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.

  1. Features in the primordial power spectrum? A frequentist analysis

    SciTech Connect

    Hamann, Jan; Shafieloo, Arman; Souradeep, Tarun E-mail: a.shafieloo1@physics.ox.ac.uk

    2010-04-01

    Features in the primordial power spectrum have been suggested as an explanation for glitches in the angular power spectrum of temperature anisotropies measured by the WMAP satellite. However, these glitches might just as well be artifacts of noise or cosmic variance. Using the effective Δχ{sup 2} between the best-fit power-law spectrum and a deconvolved primordial spectrum as a measure of ''featureness'' of the data, we perform a full Monte-Carlo analysis to address the question of how significant the recovered features are. We find that in 26% of the simulated data sets the reconstructed spectrum yields a greater improvement in the likelihood than for the actually observed data. While features cannot be categorically ruled out by this analysis, and the possibility remains that simple theoretical models which predict some of the observed features might stand up to rigorous statistical testing, our results suggest that WMAP data are consistent with the assumption of a featureless power-law primordial spectrum.

  2. Feature Based Machining Process Planning V5.1

    Energy Science and Technology Software Center

    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

  3. Microscale Confinement features in microfluidic devices can affect biofilm

    SciTech Connect

    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.

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

    SciTech Connect

    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.

  5. ARM News &#187; Feature Stories and Releases

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6:00:04 +0000 http://www.arm.gov en Celebrating Climate Data&acirc;&euro;&trade;s Wild Blue Yonder Mon, 17 Oct 2016 06:00:04 +0000 Feature Stories and Releases http://www.arm.gov/news/features/post/38683 <img src="http://www.arm.gov/images/cms/18421619070_d5076c0287_k-1.jpg:100w" style="float:left;margin-right:5px;margin-bottom:5px"/><p>A decade ago ARM had no aircraft of its own and managed only a few instruments for aerial measurements. This October

  6. Triaxial Stress Distributions in Cu / low-k Interconnect Features

    SciTech Connect

    C Murray; P Besser; E Ryan; J Jordan-Sweet

    2011-12-31

    The distribution of triaxial stresses within single damascene Cu/organosilicate interconnect structures as a function of linewidth, ranging from 45 to 250 nm, was measured using x-ray diffraction. Least-squares minimization techniques were employed to determine the volume-averaged stress tensors of the Cu features. Longitudinal Cu stress values increased for linewidths below 100 nm, while transverse stresses decreased with decreasing linewidth below 100 nm due to the interplay between the Cu microstructure and the feature geometry. Large tensile out-of-plane stresses were observed in all of the lines demonstrating the constraint imposed by the barrier layers that encapsulate the Cu.

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

    U.S. Department of Energy (DOE) - all 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

  8. Appendix SCR: Feature, Event, and Process Screening for PA

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SCR-2014 Feature, Event, and Process Screening for PA United States Department of Energy Waste Isolation Pilot Plant Carlsbad Field Office Carlsbad, New Mexico Compliance Recertification Application 2014 Appendix SCR-2014 Feature, Event, and Process Screening for PA Table of Contents SCR-1.0 Introduction SCR-2.0 Basis for FEPs Screening Process SCR-2.1 Requirement for FEPs SCR-2.2 FEPs List Development for the CCA SCR-2.3 Criteria for Screening of FEPs and Categorization of Retained FEPs

  9. ORNL Lightweighting Research Featured on MotorWeek

    ScienceCinema

    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.

  10. PARC Seminar Series featuring Don Bryant | Photosynthetic Antenna Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Center Don Bryant PARC Seminar Series featuring Don Bryant "Far-red light photoacclimation (FaRLiP) leads to extensive acclimative remodeling of photosynthetic apparatus in cyanobacteria." September 22, 2014 - 11:00am Washington University, Brauer Hall Room 12 View Seminar Here Don Bryant Bio Download Flyer Here

  11. PARC Seminar Series featuring Professor Martin Warren | Photosynthetic

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Antenna Research Center Professor Martin Warren PARC Seminar Series featuring Professor Martin Warren October 19, 2016 - 4:00pm Rebstock 322 Join us in welcoming Professor Martin Warren from University of Kent in the UK to Washington University in St. Louis. You can view the seminar live online at: wustl.adobeconnect.com/parc View Bio Here View Flyer Here Seminars

  12. ORNL Lightweighting Research Featured on MotorWeek

    SciTech Connect

    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.

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    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

  14. Estimating Missing Features to Improve Multimedia Information Retrieval

    SciTech Connect

    Bagherjeiran, A; Love, N S; Kamath, C

    2006-09-28

    Retrieval in a multimedia database usually involves combining information from different modalities of data, such as text and images. However, all modalities of the data may not be available to form the query. The retrieval results from such a partial query are often less than satisfactory. In this paper, we present an approach to complete a partial query by estimating the missing features in the query. Our experiments with a database of images and their associated captions show that, with an initial text-only query, our completion method has similar performance to a full query with both image and text features. In addition, when we use relevance feedback, our approach outperforms the results obtained using a full query.

  15. Biosensor method and system based on feature vector extraction

    DOEpatents

    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.

  16. Biosensor method and system based on feature vector extraction

    DOEpatents

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

    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.

  17. Spatial feature tracking impedence sensor using multiple electric fields

    DOEpatents

    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.

  18. Spatial feature tracking impedence sensor using multiple electric fields

    DOEpatents

    Novak, James L.

    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.

  19. Identification of features in indexed data and equipment therefore

    DOEpatents

    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.

  20. NREL Earth Day Celebration Features Energy Activities, Tours

    U.S. Department of Energy (DOE) - all 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

  1. Identifying Transition State Features of Enzymatic Conformational Cycles |

    U.S. Department of Energy (DOE) - all 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

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

    SciTech Connect

    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.

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

    U.S. Department of Energy (DOE) - all 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

  4. Absorption Features in Spectra of Magnetized Neutron Stars

    SciTech Connect

    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.

  5. An Ontology Design Pattern for Surface Water Features

    SciTech Connect

    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.

  6. Features of an Atkinson two-stroke engine

    SciTech Connect

    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.

  7. Arapahoe Community College Science and Technical Programs featured at OSTI

    Office of Scientific and Technical Information (OSTI)

    Community College Connections | OSTI, US Dept of Energy Office of Scientific and Technical Information Arapahoe Community College Science and Technical Programs featured at OSTI Community College Connections Back to the OSTI News Listing for 2011 Energy Technology programs are offered now at Arapahoe Community College: Solar Photovoltaic Systems Technician Certificate Solar Thermal System Technician Certificate Energy Analyst (Auditor) Certificate Construction Supervision AAS Degree LEED

  8. Citations from the Atmospheric Radiation Measurement (ARM) Program Featured

    Office of Scientific and Technical Information (OSTI)

    at OSTI's DOE Data Explorer | OSTI, US Dept of Energy Office of Scientific and Technical Information Citations from the Atmospheric Radiation Measurement (ARM) Program Featured at OSTI's DOE Data Explorer Back to the OSTI News Listing for 2008 Now you can find additional citations from the Atmospheric Radiation Measurement (ARM) Program at the DOE Data Explorer. ARM, a key contributor to national and international research efforts related to global climate change, is a multi-laboratory,

  9. University of Illinois featured at the OSTI .EDUconnections website | OSTI,

    Office of Scientific and Technical Information (OSTI)

    US Dept of Energy Office of Scientific and Technical Information University of Illinois featured at the OSTI .EDUconnections website Back to the OSTI News Listing for 2010 Connect to DOE-related research at the University of Illinois when you visit .EDUconnections. Learn about professors of interest and the institution's exceptional students, and find remarkable innovations in research. Quick links are available at .EDUconnections to DOE grants, internships, fellowships and scholarships, and

  10. Wolfgang Panofsky dead at 88, bibliography featured at Energy Citations

    Office of Scientific and Technical Information (OSTI)

    Database | OSTI, US Dept of Energy Office of Scientific and Technical Information Wolfgang Panofsky dead at 88, bibliography featured at Energy Citations Database Back to the OSTI News Listing for 2007 Wolfgang K. H. "Pief", Panofsky, a renowned particle physics researcher, accelerator builder, outspoken arms control advocate, and administrator of basic research, died September 25, 2007. Dr. Panofsky was awarded the National Medal of Science in 1969 and the U.S. Department of

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

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) NASA features LLNL star-formation simulations Friday, January 29, 2016 - 5:56pm NNSA Blog These high performance computing (HPC) simulations of star formation account for a broad range of physical processes, including: gravity, supersonic turbulence, hydrodynamics, outflows, magnetic fields, chemistry and ionizing and non-ionizing radiation. Image courtesy of Pak Shing Li/ University of California, Berkeley High performance computing (HPC) simulations exploring star

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

    SciTech Connect

    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/.

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

    SciTech Connect

    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

  14. FEATURE: Finite-Element Analysis Tool for Utility Rotordynamic Evaluation. Volume 2. FEATURE/COJOUR workshop notes

    SciTech Connect

    Lee, C.C.; Tecza, J.; Zorzi, E.S.

    1985-05-01

    The FEATURE computer program (Finite-Element Analysis Tool for Utility Rotordynamic Evaluation) is a flexible, user-oriented tool for analysis of rotor-bearing systems. The program performs linear critical speed, damped response, and stability calculations for a wide range of rotor geometries, including multiple, concentric, counterrotating spools and large, multispan, rigidly coupled rotors. A finite-element formulation gives the program excellent numerical stability and the use of static substructuring greatly reduces run time. The COJOUR computer program is to provide a technically sound means for determining dynamic coefficients for use in the FEATURE code. It is capable of solving a wide variety of fluid film journal bearing configuration including both fixed-pad and tiling-pad types with or without thermal effects. The program will give comprehensive output such as load capacity, power loss, stiffness and dampling coefficients, etc.

  15. SolarPILOT Feature Requests and Collaboration | Concentrating Solar Power |

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL SolarPILOT Feature Requests and Collaboration NREL works with the DOE to identify priority areas for continued SolarPILOT(tm) and SolTrace(tm) development. This work is rigorously reviewed and competitively awarded under the SunShot National Laboratory Multiyear Partnership (SuNLaMP) proposal development process, and the development work resulting from this process reflects the assessment by NREL and DOE of the CSP community's needs. If users are interested in working with NREL to

  16. 5f Magnetism--Specific Features And Boundaries

    SciTech Connect

    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.

  17. Photovoltaic building sheathing element with anti-slide features

    SciTech Connect

    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.

  18. Special Feature: Reducing Energy Costs with Better Batteries

    U.S. Department of Energy (DOE) - all 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. New Regenerative Cycle for Vapor Compression Refrigeration

    SciTech Connect

    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.

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... SunShot Logo At this time, this project does not have published articles, patents, or awards. Learn about other DOE competitive awards for concentrating solar power research that ...

  1. Therapeutic potential of nanoceria in regenerative medicine ...

    Office of Scientific and Technical Information (OSTI)

    Advancement of tissue engineering requires innovation in the field of 3D scaffolding, and functionalization with bioactive molecules. Nanotechnology offers advanced materials with ...

  2. dry-regen | netl.doe.gov

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    for CO2 Removal from Flue Gas of Existing Coal-Fired Power Plants PDF-475KB (Aug 2008) Technical paper presented at the Power Plant Air Pollutant Control "Mega" Symposium, ...

  3. Features of photoconversion in highly efficient silicon solar cells

    SciTech Connect

    Sachenko, A. V.; Shkrebtii, A. I.; Korkishko, R. M.; Kostylyov, V. P.; Kulish, N. R.; Sokolovskyi, I. O.

    2015-02-15

    The photoconversion efficiency η in highly efficient silicon-based solar cells (SCs) is analyzed depending on the total surface-recombination rate S{sub s} on illuminated and rear surfaces. Solar cells based on silicon p-n junctions and α-Si:H or α-SiC:H-Si heterojunctions (so-called HIT structures) are considered in a unified approach. It is shown that a common feature of these SCs is an increased open-circuit voltage V{sub oc} associated with an additional contribution of the rear surface. Within an approach based on analysis of the physical features of photoconversion in SCs, taking into account the main recombination mechanisms, including Shockley-Read-Hall recombination, radiative recombination, surface recombination, recombination in the space-charge region, and band-to-band Auger recombination, expressions for the photoconversion efficiency of such SCs are obtained. The developed theory is compared with experiments, including those for SCs with record parameters, e.g., η = 25% and 24.7% for SCs with a p-n junction for HIT structures, respectively, under AM1.5 conditions. By comparing theory and experiment, the values of S{sub s} achieved as a result of recombination-loss minimization by various methods are determined. The results of calculations of the maximum possible value η{sub max} in silicon SCs are compared with the data of other papers. Good agreement is observed.

  4. Primordial features due to a step in the inflaton potential

    SciTech Connect

    Hazra, Dhiraj Kumar; Sriramkumar, L.; Aich, Moumita; Souradeep, Tarun; Jain, Rajeev Kumar E-mail: moumita@iucaa.ernet.in E-mail: sriram@hri.res.in

    2010-10-01

    Certain oscillatory features in the primordial scalar power spectrum are known to provide a better fit to the outliers in the cosmic microwave background data near the multipole moments of l = 22 and 40. These features are usually generated by introducing a step in the popular, quadratic potential describing the canonical scalar field. Such a model will be ruled out, if the tensors remain undetected at a level corresponding to a tensor-to-scalar ratio of, say, r ≅ 0.1. In this work, in addition to the popular quadratic potential, we investigate the effects of the step in a small field model and a tachyon model. With possible applications to future datasets (such as PLANCK) in mind, we evaluate the tensor power spectrum exactly, and include its contribution in our analysis. We compare the models with the WMAP (five as well as seven-year), the QUaD and the ACBAR data. As expected, a step at a particular location and of a suitable magnitude and width is found to improve the fit to the outliers (near l = 22 and 40) in all these cases. We point out that, if the tensors prove to be small (say, r∼<0.01), the quadratic potential and the tachyon model will cease to be viable, and more attention will need to be paid to examples such as the small field models.

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

    SciTech Connect

    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.

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

    SciTech Connect

    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

    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

    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. Generic features of Einstein-Aether black holes

    SciTech Connect

    Tamaki, Takashi; Miyamoto, Umpei

    2008-01-15

    We reconsider spherically symmetric black hole solutions in Einstein-Aether theory with the condition that this theory has identical parametrized post-Newtonian parameters as those for general relativity, which is the main difference from the previous research. In contrast with previous study, we allow superluminal propagation of a spin-0 Aether-gravity wave mode. As a result, we obtain black holes having a spin-0 'horizon' inside an event horizon. We allow a singularity at a spin-0 horizon since it is concealed by the event horizon. If we allow such a configuration, the kinetic term of the Aether field can be large enough for black holes to be significantly different from Schwarzschild black holes with respect to Arnowitt-Deser-Misner mass, innermost stable circular orbit, Hawking temperature, and so on. We also discuss whether or not the above features can be seen in more generic vector-tensor theories.

  10. Multispectral image feature fusion for detecting land mines

    SciTech Connect

    Clark, G.A.; Fields, D.J.; Sherwood, R.J.

    1994-11-15

    Our system fuses information contained in registered images from multiple sensors to reduce the effect of clutter and improve the the ability to detect surface and buried land mines. The sensor suite currently consists if a camera that acquires images in sixible wavelength bands, du, dual-band infrared (5 micron and 10 micron) and ground penetrating radar. Past research has shown that it is extremely difficult to distinguish land mines from background clutter in images obtained from a single sensor. It is hypothesized, however, that information fused from a suite of various sensors is likely to provide better detection reliability, because the suite of sensors detects a variety of physical properties that are more separate in feature space. The materials surrounding the mines can include natural materials (soil, rocks, foliage, water, holes made by animals and natural processes, etc.) and some artifacts.

  11. Non-contact feature detection using ultrasonic Lamb waves

    DOEpatents

    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.

  12. Features of MCNP6 Relevant to Medical Radiation Physics

    SciTech Connect

    Hughes, H. Grady III; Goorley, John T.

    2012-08-29

    MCNP (Monte Carlo N-Particle) is a general-purpose Monte Carlo code for simulating the transport of neutrons, photons, electrons, positrons, and more recently other fundamental particles and heavy ions. Over many years MCNP has found a wide range of applications in many different fields, including medical radiation physics. In this presentation we will describe and illustrate a number of significant recently-developed features in the current version of the code, MCNP6, having particular utility for medical physics. Among these are major extensions of the ability to simulate large, complex geometries, improvement in memory requirements and speed for large lattices, introduction of mesh-based isotopic reaction tallies, advances in radiography simulation, expanded variance-reduction capabilities, especially for pulse-height tallies, and a large number of enhancements in photon/electron transport.

  13. Centrifugal Casting Features/Metallurgical Characterization of Aluminum Alloys

    SciTech Connect

    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)

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

    DOEpatents

    Oppenlander, Jane E.; Loomis, Kent C.; Brudnoy, David M.; Levy, Arthur J.

    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.

  15. Comparing Shape and Texture Features for Pattern Recognition in Simulation Data

    SciTech Connect

    Newsam, S; Kamath, C

    2004-12-10

    Shape and texture features have been used for some time for pattern recognition in datasets such as remote sensed imagery, medical imagery, photographs, etc. In this paper, we investigate shape and texture features for pattern recognition in simulation data. In particular, we explore which features are suitable for characterizing regions of interest in images resulting from fluid mixing simulations. Three texture features--gray level co-occurrence matrices, wavelets, and Gabor filters--and two shape features--geometric moments and the angular radial transform--are compared. The features are evaluated using a similarity retrieval framework. Our preliminary results indicate that Gabor filters perform the best among the texture features and the angular radial transform performs the best among the shape features. The feature which performs the best overall is dependent on how the groundtruth dataset is created.

  16. Imaging trace element distributions in single organelles and subcellular features

    DOE PAGES [OSTI]

    Kashiv, Yoav; Austin, Jotham R.; Lai, Barry; Rose, Volker; Vogt, Stefan; El-Muayed, Malek

    2016-02-25

    The distributions of chemical elements within cells are of prime importance in a wide range of basic and applied biochemical research. An example is the role of the subcellular Zn distribution in Zn homeostasis in insulin producing pancreatic beta cells and the development of type 2 diabetes mellitus. We combined transmission electron microscopy with micro- and nano-synchrotron X-ray fluorescence to image unequivocally for the first time, to the best of our knowledge, the natural elemental distributions, including those of trace elements, in single organelles and other subcellular features. Detected elements include Cl, K, Ca, Co, Ni, Cu, Zn and Cdmore » (which some cells were supplemented with). Cell samples were prepared by a technique that minimally affects the natural elemental concentrations and distributions, and without using fluorescent indicators.We find it could likely be applied to all cell types and provide new biochemical insights at the single organelle level not available from organelle population level studies.« less

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

    DOE PAGES [OSTI]

    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

  18. Improved searching for spatial features in spatio-temporal data

    SciTech Connect

    Stockinger, Kurt; Wu, Kesheng

    2004-09-27

    Scientific data analysis often requires mining large databases or data warehouses to find features in space. One important task is to find regions of interest such as stellar objects in astrophysics or flame fronts in combustion studies. Typically, this task is performed in two steps. The first step (searching) identifies records satisfying certain conditions specified by the user and outputs a set of cells. The second step (region-growing) groups these cells into connected regions. Most common approaches essentially perform a brute-force scan for these arching step. A number of indexing schemes have been proposed to speed up the searching step. Because they usually also slow down the region-growing step, these schemes have not reduced the overall time. In this article, we propose an approach based on compressed bitmap indices. Our approach speeds up not only the searching step, but also the region-growing step. In the literature, the time complexity of the region-growing step is demonstrated to be linear in the number of records in the dataset. In our tests, we show that the response time of our region-growing algorithm is linear in the number of records close to the surface of the regions of interest which is a small subset of all cells.

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

    SciTech Connect

    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).

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

    SciTech Connect

    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).

  1. DUSTY WINDS: EXTRAPLANAR POLYCYCLIC AROMATIC HYDROCARBON FEATURES OF NEARBY GALAXIES

    SciTech Connect

    McCormick, Alexander; Veilleux, Sylvain; Rupke, David S. N. E-mail: veilleux@astro.umd.edu

    2013-09-10

    Recent observations have shown the presence of dust and molecular material in galactic winds, but relatively little is known about the distribution of these outflow components. To shed some light on this issue, we have used IRAC images from the Spitzer Space Telescope archive to investigate polycyclic aromatic hydrocarbon (PAH) emission from a sample of 16 local galaxies with known winds. Our focus on nearby sources (median distance 8.6 Mpc) has revealed detailed PAH structure in the winds and allowed us to measure extraplanar PAH emission. We have identified extraplanar PAH features on scales of {approx}0.8-6.0 kpc. We find a nearly linear correlation between the amount of extraplanar PAH emission and the total infrared flux, a proxy for star formation activity in the disk. Our results also indicate a correlation between the height of extraplanar PAH emission and star formation rate surface density, which supports the idea of a surface density threshold on the energy or momentum injection rate for producing detectable extraplanar wind material.

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

    DOEpatents

    Sindorf, John F.

    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.

  3. A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA (Journal...

    Office of Scientific and Technical Information (OSTI)

    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 ...

  4. SU-E-J-237: Image Feature Based DRR and Portal Image Registration...

    Office of Scientific and Technical Information (OSTI)

    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 ...

  5. Joint BioEnergy Institute Oxime-NIMS Work Featured on the Cover...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    BioEnergy Institute Oxime-NIMS Work Featured on the Cover of ACS Chemical Biology - Sandia ... Joint BioEnergy Institute Oxime-NIMS Work Featured on the Cover of ACS Chemical Biology ...

  6. Day Three of 2012 ARPA-E Summit Will Feature President Bill Clinton...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    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 ...

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

    SciTech Connect

    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.

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

    SciTech Connect

    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

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

    SciTech Connect

    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.

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

    SciTech Connect

    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.

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

    SciTech Connect

    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

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

    DOEpatents

    Johnson, William L.; Bakke, Eric; Peker, Atakan

    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.

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

    SciTech Connect

    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

  14. SU-D-BRA-05: Toward Understanding the Robustness of Radiomics Features in CT

    SciTech Connect

    Mackin, D; Zhang, L; Yang, J; Jones, A; Court, L; Fave, X; Fried, D; Taylor, B; Rodriguez-Rivera, E; Dodge, C

    2015-06-15

    Purpose: To gauge the impact of inter-scanner variability on radiomics features in computed tomography (CT). Methods: We compared the radiomics features calculated for 17 scans of the specially designed Credence Cartridge Radiomics (CCR) phantom with those calculated for 20 scans of non–small cell lung cancer (NSCLC) tumors. The scans were acquired at four medical centers using General Electric, Philips, Siemens, and Toshiba CT scanners. Each center used its own routine thoracic imaging protocol. To produce a large dynamic range of radiomics feature values, the CCR phantom has 10 cartridges comprising different materials. The features studied were derived from the neighborhood gray-tone difference matrix or image intensity histogram. To quantify the significance of the inter-scanner variability, we introduced the metric “feature noise”, which compares the ratio of inter-scanner variability and inter-patient variability in decibels, positive values indicating substantial noise. We performed hierarchical clustering based to look for dependence of the features on the scan acquisition parameters. Results: For 5 of the 10 features studied, the inter-scanner variability was larger than the inter-patient variability. Of the 10 materials in the phantom, shredded rubber seemed to produce feature values most similar to those of the NSCLC tumors. The feature busyness had the greatest feature noise (14.3 dB), whereas texture strength had the least (−14.6 dB). Hierarchical clustering indicated that the features depended in part on the scanner manufacturer, image slice thickness, and pixel size. Conclusion: The variability in the values of radiomics features calculated for CT images of a radiomics phantom can be substantial relative to the variability in the values of these features calculated for CT images of NSCLC tumors. These inter-scanner differences and their effects should be carefully considered in future radiomics studies.

  15. Feb. 9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Music | Jefferson Lab 9 Event at Jefferson Lab Features Chemistry Demonstrations Set to Pop Music 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

  16. Fractured reservoir discrete feature network technologies. Final report, March 7, 1996 to September 30, 1998

    SciTech Connect

    Dershowitz, William S.; Einstein, Herbert H.; LaPoint, Paul R.; Eiben, Thorsten; Wadleigh, Eugene; Ivanova, Violeta

    1998-12-01

    This report summarizes research conducted for the Fractured Reservoir Discrete Feature Network Technologies Project. The five areas studied are development of hierarchical fracture models; fractured reservoir compartmentalization, block size, and tributary volume analysis; development and demonstration of fractured reservoir discrete feature data analysis tools; development of tools for data integration and reservoir simulation through application of discrete feature network technologies for tertiary oil production; quantitative evaluation of the economic value of this analysis approach.

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

    SciTech Connect

    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.

  18. African American Inventors, Nutrition, Much More Featured at Science.gov |

    Office of Scientific and Technical Information (OSTI)

    OSTI, US Dept of Energy Office of Scientific and Technical Information African American Inventors, Nutrition, Much More Featured at Science.gov Back to the OSTI News Listing for 2008 In one query, you can search over 30 databases and more than 1,800 scientific Web sites from 13 federal government agencies at Science.gov. Currently featured sites include African Americans in Science and Technology, Smart Nutrition, Poison Prevention and Animal Cloning. Science.gov's featured sites are rotated

  19. Hurricane Katrina Recovery Information Features at Science.gov | OSTI, US

    Office of Scientific and Technical Information (OSTI)

    Dept of Energy Office of Scientific and Technical Information Recovery Information Features at Science.gov Back to the OSTI News Listing for 2005 The Science.gov Alliance recently tapped its wealth of scientific information across 12 science agencies to provide two special Hurricane Katrina features at Science.gov. A few of the vast information sources included on these features are: WISER - Wireless Information System for Emergency Responders; HSDB - Hazardous Substances Data Bank; TOXMAP -

  20. Science Web sites featured at Science.gov | OSTI, US Dept of Energy Office

    Office of Scientific and Technical Information (OSTI)

    of Scientific and Technical Information Web sites featured at Science.gov Back to the OSTI News Listing for 2008 In one query, you can search over 30 databases and more than 1,800 scientific Web sites from 13 federal government agencies at Science.gov. Currently, featured sites include Fuel Economy, Mosquito Control, and National Earthquake Information Center. Science.gov's featured sites are rotated frequently, but you can access a comprehensive list of previous features by going to the

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

    SciTech Connect

    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.

  2. Web Feature Nuclear Stewardship: Lessons from a Not-So-Remote...

    Office of Legacy Management (LM)

    Geotimes - March 2002 - Amchitka Island Yage 1 ot 6 Web Feature Nuclear Stewardship: ... or of DOE. In 1971, the United States set off its largest underground nuclear test. ...

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

    SciTech Connect

    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.

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

    SciTech Connect

    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.

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

    SciTech Connect

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

    DOEpatents

    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.

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

    DOEpatents

    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.

  8. OSTI Video Featured | OSTI, US Dept of Energy Office of Scientific and

    Office of Scientific and Technical Information (OSTI)

    Technical Information Video Featured Back to the OSTI News Listing for 2011 An OSTI video is featured at the Energy Blog's Vintage Energy. The Energy Blog says that the DOE R&D Accomplishments: Visions of Success video "does a great job detailing DOE's accomplishments -- and with some energetic music to boot!"

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

    SciTech Connect

    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

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

    DOEpatents

    Gill, David Dennis; Keeler, Gordon A.; Serkland, Darwin K.; Mukherjee, Sayan D.

    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.

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

    SciTech Connect

    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.

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

    SciTech Connect

    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.

  13. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Founded in 1974 at Lawrence Livermore National Laboratory (LLNL) as the Controlled Thermonuclear Research Computer Center, NERSC has evolved from its early days supporting...

  14. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    September 2013 Video Tutorial for Submitting a 2014 ERCAP Request available September 17, ... Then check out the new video tutorial on How to Submit a 2014 ERCAP Request and get the ...

  15. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NERSC Allocation Year 2012 Ends Monday, January 7 December 19, 2012 by David Turner ... NERSC 2013 awards December 14, 2012 by David Turner The NERSC 2013 awards have been posted

  16. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  17. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Exploration (NISE) 2012 awards have been made February 16, 2012 by Francesca Verdier We received 60 NISE requests this year and have awarded 107.5 million hours to 22 projects. ...

  18. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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 ...

  19. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    November 2013 2014 Call for NERSC Initiative for Scientific Exploration (NISE) Program Due ... is now open for its second round of allocations to projects in data intensive science. ...

  20. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    completed 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...

  1. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  2. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Applications for Postdoctoral Fellowship in Computational Science at Berkeley Lab due November 26 October 15, 2012 by Francesca Verdier Researchers in computer science, applied ...

  3. features | JCESR

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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 ...

  4. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    March 2015 Intel Led OpenMP Training Session at NERSC This Wednesday March 25 March 24, ... Oakland, CA 94612), NERSC will be hosting an Intel led OpenMP threading training session. ...

  5. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    name, preferred username, and contact information, they will need to select the projectrepositoryexperimentshare that they want to be added to from the provided selection list. ...

  6. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  7. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    the entire Edison system will be unavailable for about one month beginning June 24. This includes the login nodes and the scratch file system. Please plan your work accordingly. ...

  8. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    register6325131222429932289)

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

  9. Featured Articles

    Office of Science (SC)

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

  10. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

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

  11. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    March 2011 Training April 5 - Material Science and Chemistry Applications March 9, 2011 by Francesca Verdier Training on "Using Chemistry and Material Sciences Applications" will be held April 5, presented simultaneously on the web and at NERSC. 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 computing, data focused science, and Flash I/O performnace. See

  12. Featured Announcements

    U.S. Department of Energy (DOE) - all 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

  13. Featured Announcements

    U.S. Department of Energy (DOE) - all 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

  14. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  15. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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"

  16. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  17. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  18. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  19. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  20. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  1. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  2. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  3. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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

  4. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    April 2016 New Webinar Series on Best Practices for HPC Software Developers April 25, 2016 by Rebecca Hartman-Baker A new webinar series aimed at developers of software on HPC systems begins on May 4, 2016. These webinars, which are a collaboration between the IDEAS scientific software productivity project, NERSC, ALCF, and OLCF, will present best practices that will help users of HPC systems carry out their software development more productively. The first webinar, entitled "What All Codes

  5. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    May 2016 Cori Phase II Preparations May 9, 2016 by Rebecca Hartman-Baker We expect the first cabinets of Cori Phase II to arrive in CRT/Wang Hall on the LBL campus in July. NERSC personnel will immediately get to work on bringing the machine into production. Before the machine can be released to the NERSC user community, a number of tasks must be completed, some of which will have a direct impact on NERSC users. We've created the Cori Phase II Schedule page to keep users updated on the progress

  6. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    June 2016 Important Update on Cori Status June 30, 2016 by Rebecca Hartman-Baker We are grateful for your patience as we upgrade Cori to the latest operating system, a necessary step in enabling support for the upcoming Knights Landing Phase 2 of Cori. At 2:00 pm Pacific time, we will release the machine back to users. Before you log in and begin working on Cori again, here are a few important things you should know. Read the full post Women in HPC at SC16: Call for Posters and Participation

  7. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    August 2016 ERCAP Renewals for AY17 Due September 19, 2016 23:59 PDT August 25, 2016 by Rebecca Hartman-Baker ERCAP Renewals for AY17 Due September 19, 2016, 23:59 PDT The deadline for submitting an ERCAP proposal for an allocation for next year is September 19, 2016 at 11:59 PM Pacific Time. Read the full post Xeon Phi Users Group 2016 Meeting August 3, 2016 by Richard Gerber Intel Xeon Phi Users Group 2016 Meeting Call for Presentations Have you been working to port or optimize your code for

  8. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    October 2016 A Brief Primer on the SLURM Scheduler October 17, 2016 by Rebecca Hartman-Baker Edison is the only NERSC supercomputer currently available to users, so it is unusually oversubscribed. This has led to long wait times for many users, and a number of questions to NERSC consulting about the poor throughput many users are getting. Users often wonder whether the scheduler is working properly. Read the full post Science Gateways Moving to Berkeley Hardware: Test Your Site! October 7, 2016

  9. Featured Announcements

    U.S. Department of Energy (DOE) - all 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...

  10. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  11. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  12. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  13. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  14. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  15. Featured Announcements

    U.S. Department of Energy (DOE) - all 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...

  16. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  17. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  18. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  19. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  20. Featured Announcements

    U.S. Department of Energy (DOE) - all 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. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  2. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  3. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  4. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    November 2015 Edison scratch files will be deleted on 11302015 when Edison moves November 15, 2015 by Zhengji Zhao Edison is scheduled to be powered off at 7:00am PST on November...

  5. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  6. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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,...

  7. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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 (globalscratch2 aka GSCRATCH) file...

  8. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    and Status Mon, Nov 28 westmere queue drain - 08:00 - DONE remove - 10:20 - DONE serial queue add westmere nodes - 10:40 - DONE Tue, Nov 29 magxlmem queue drain - 08:00 -...

  9. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  10. ALSNews Features

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... based on entering the DOI. To enter publications or to search the ALS publications database, go ... In terms of user access, there are opportunities and challenges to the ...

  11. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  12. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    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...

  13. Featured Announcements

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support ...

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

    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)

  15. AN ENIGMATIC POINT-LIKE FEATURE WITHIN THE HD 169142 TRANSITIONAL DISK ,

    SciTech Connect

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

    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 HD 169142. The point-like feature has a Δmag(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.

  16. New Low-Energy Building a Landscape Leader, Too - News Feature...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    "We were able to mix really nice landscaping features with the walls and used a lot less energy than if we'd used a ... in this area of the country," Rukavina said. "It will ...

  17. New Feature at OSTI's DOE R& D Accomplishments | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information Feature at OSTI's DOE R& D Accomplishments Back to the OSTI News Listing for 2005 Sheldon Glashow, whose work has been instrumental in understanding how our universe came into being, and Steven Weinberg, author of the prize-winning book The First Three Minutes: A Modern View of the Origin of the Universe, are two Noble Laureates featured at OSTI's DOE R &D Accomplishments

  18. Nobel Prize winners Hulse and Wigner featured | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information winners Hulse and Wigner featured Back to the OSTI News Listing for 2005 Nobel Prize winners Dr. Russell A. Hulse (1993) and Eugene P. Wigner (1963) are highlighted as part of OSTI's Featured Nobel Physicists, commemorating the World Year of Physics. Hulse won the Nobel Prize for the discovery of the first binary pulsar; Wigner's contributions include his insight into the fundamental mathematics and physics of quantum mechanics, the effort of

  19. OSTI Website Features Non-medical Uses of Computed Tomography (CT) and

    Office of Scientific and Technical Information (OSTI)

    Nuclear Magnetic Resonance (NMR) | OSTI, US Dept of Energy Office of Scientific and Technical Information Website Features Non-medical Uses of Computed Tomography (CT) and Nuclear Magnetic Resonance (NMR) Back to the OSTI News Listing for 2008 From fruit juice screening to coal cleaning processes, Computed Tomography (CT) and Nuclear Magnetic Resonance (NMR) are being put to use for non-medical research. The radiographic inspection methods are currently featured at the DOE R&D

  20. OSTI posts feature of DOE scientists contributing to 2007 Nobel Peace Prize

    Office of Scientific and Technical Information (OSTI)

    about Climate Change | OSTI, US Dept of Energy Office of Scientific and Technical Information posts feature of DOE scientists contributing to 2007 Nobel Peace Prize about Climate Change Back to the OSTI News Listing for 2008 OSTI has posted a Climate Change feature of Department of Energy researchers who contributed to the 2007 Nobel Peace Prize. Information on these researchers, along with DOE technical reports about climate change and links to additional Web pages can be found at DOE

  1. Radiocarbon, Carbon Dating and Willard Libby featured at DOE R&D

    Office of Scientific and Technical Information (OSTI)

    Accomplishments Website | OSTI, US Dept of Energy Office of Scientific and Technical Information Radiocarbon, Carbon Dating and Willard Libby featured at DOE R&D Accomplishments Website Back to the OSTI News Listing for 2010 Willard Libby won the 1960 Nobel Prize in Chemistry for his development of a method to use carbon-14 for age determination in archaeology, geology, geophysics, and other branches of science. View the feature at DOE R&D Accomplishments, a central forum for

  2. Science.gov, Now with Multimedia, New Search Features, Spanish Translations

    Office of Scientific and Technical Information (OSTI)

    Spanish Version Debuted | OSTI, US Dept of Energy Office of Scientific and Technical Information October 9, 2012 Science.gov, Now with Multimedia, New Search Features, Spanish Translations Spanish Version Debuted Oak Ridge, TN - Science.gov, the gateway to U.S. federal science hosted by the Office of Scientific and Technical Information (OSTI), now includes multimedia content and additional features, including an updated interface with enhanced navigation, to help users find the science

  3. Seaborg award winner's documents featured | OSTI, US Dept of Energy Office

    Office of Scientific and Technical Information (OSTI)

    of Scientific and Technical Information Seaborg award winner's documents featured Back to the OSTI News Listing for 2007 Saed Mirzadeh, whose work at Oak Ridge National Laboratory has led to development of new treatments for cancer and other diseases, is the recipient of the American Nuclear Society's 2007 Seaborg Medal Award. A selection of Dr. Mirzadeh's documents are featured at OSTI's Information Bridge. Information Bridge provides free access to full-text documents and citations of the

  4. ARPA-E's Seventh Annual Energy Innovation Summit to Feature America's

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    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

  5. Computer-aided breast MR image feature analysis for prediction of tumor response to chemotherapy

    SciTech Connect

    Aghaei, Faranak; Tan, Maxine; Liu, Hong; Zheng, Bin; Hollingsworth, Alan B.; Qian, Wei

    2015-11-15

    Purpose: To identify a new clinical marker based on quantitative kinetic image features analysis and assess its feasibility to predict tumor response to neoadjuvant chemotherapy. Methods: The authors assembled a dataset involving breast MR images acquired from 68 cancer patients before undergoing neoadjuvant chemotherapy. Among them, 25 patients had complete response (CR) and 43 had partial and nonresponse (NR) to chemotherapy based on the response evaluation criteria in solid tumors. The authors developed a computer-aided detection scheme to segment breast areas and tumors depicted on the breast MR images and computed a total of 39 kinetic image features from both tumor and background parenchymal enhancement regions. The authors then applied and tested two approaches to classify between CR and NR cases. The first one analyzed each individual feature and applied a simple feature fusion method that combines classification results from multiple features. The second approach tested an attribute selected classifier that integrates an artificial neural network (ANN) with a wrapper subset evaluator, which was optimized using a leave-one-case-out validation method. Results: In the pool of 39 features, 10 yielded relatively higher classification performance with the areas under receiver operating characteristic curves (AUCs) ranging from 0.61 to 0.78 to classify between CR and NR cases. Using a feature fusion method, the maximum AUC = 0.85 ± 0.05. Using the ANN-based classifier, AUC value significantly increased to 0.96 ± 0.03 (p < 0.01). Conclusions: This study demonstrated that quantitative analysis of kinetic image features computed from breast MR images acquired prechemotherapy has potential to generate a useful clinical marker in predicting tumor response to chemotherapy.

  6. Leveraging the General Services Administration's SmartPay2 Program and its Single Use Account Feature

    Energy.gov [DOE]

    This Flash is issued to clarify the Single Use Account feature discussed in the Memorandum, Leveraging the General Services Administration's SmartPay2 Program and its Single Use Account Feature, dated February 6, 2013, should be leveraged by all current and future GSA SmartPay2 Program contractors, where it makes sense. Single Use Accounts are not designed for Federal procurement offices to use for payments, and therefore, do not apply to Federal employees.

  7. Arizona State featured at OSTI | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information Arizona State featured at OSTI Back to the OSTI News Listing for 2010 ASU researchers are looking to solve society's grand challenges, and the institution's research awards grew to over $347 million in 2010. You can now read about ASU research opportunities -- -from undergraduate research to the Complex Adaptive Systems Initiative -- at the OSTI .EDUconnections website. .EDUconnections features U.S. institutions committed to supporting and advancing DOE

  8. DOE Technology Transfer Website Features New Tool to Search Tech Transfer

    Office of Scientific and Technical Information (OSTI)

    Information from DOE National Laboratories | OSTI, US Dept of Energy Office of Scientific and Technical Information December 3, 2012 DOE Technology Transfer Website Features New Tool to Search Tech Transfer Information from DOE National Laboratories The Department of Energy (DOE) Technology Transfer website has a new search feature that for the first time allows searching of technology transfer information across the DOE national laboratories. The new tool enables users to search all of

  9. How do plants capture energy? OSTI features the work of Nobel Laureate

    Office of Scientific and Technical Information (OSTI)

    Melvin Calvin | OSTI, US Dept of Energy Office of Scientific and Technical Information How do plants capture energy? OSTI features the work of Nobel Laureate Melvin Calvin Back to the OSTI News Listing for 2010 Following carbon's path through photosynthesis earned Melvin Calvin the 1961 Nobel Prize in Chemistry and ignited DOE research into using solar energy as a renewable resource. Calvin's work is featured at the DOE R&D Accomplishments website. Find Resources with Additional

  10. Probing the terrestrial regions of planetary systems: warm debris disks with emission features

    SciTech Connect

    Ballering, Nicholas P.; Rieke, George H.; Gáspár, András

    2014-09-20

    Observations of debris disks allow for the study of planetary systems, even where planets have not been detected. However, debris disks are often only characterized by unresolved infrared excesses that resemble featureless blackbodies, and the location of the emitting dust is uncertain due to a degeneracy with the dust grain properties. Here, we characterize the Spitzer Infrared Spectrograph spectra of 22 debris disks exhibiting 10 μm silicate emission features. Such features arise from small warm dust grains, and their presence can significantly constrain the orbital location of the emitting debris. We find that these features can be explained by the presence of an additional dust component in the terrestrial zones of the planetary systems, i.e., an exozodiacal belt. Aside from possessing exozodiacal dust, these debris disks are not particularly unique; their minimum grain sizes are consistent with the blowout sizes of their systems, and their brightnesses are comparable to those of featureless warm debris disks. These disks are in systems of a range of ages, though the older systems with features are found only around A-type stars. The features in young systems may be signatures of terrestrial planet formation. Analyzing the spectra of unresolved debris disks with emission features may be one of the simplest and most accessible ways to study the terrestrial regions of planetary systems.

  11. FALDO: a semantic standard for describing the location of nucleotide and protein feature annotation

    DOE PAGES [OSTI]

    Bolleman, Jerven T.; Mungall, Christopher J.; Strozzi, Francesco; Baran, Joachim; Dumontier, Michel; Bonnal, Raoul J. P.; Buels, Robert; Hoehndorf, Robert; Fujisawa, Takatomo; Katayama, Toshiaki; et al

    2016-06-13

    Nucleotide and protein sequence feature annotations are essential to understand biology on the genomic, transcriptomic, and proteomic level. Using Semantic Web technologies to query biological annotations, there was no standard that described this potentially complex location information as subject-predicate-object triples. In this paper, we have developed an ontology, the Feature Annotation Location Description Ontology (FALDO), to describe the positions of annotated features on linear and circular sequences. FALDO can be used to describe nucleotide features in sequence records, protein annotations, and glycan binding sites, among other features in coordinate systems of the aforementioned “omics” areas. Using the same data formatmore » to represent sequence positions that are independent of file formats allows us to integrate sequence data from multiple sources and data types. The genome browser JBrowse is used to demonstrate accessing multiple SPARQL endpoints to display genomic feature annotations, as well as protein annotations from UniProt mapped to genomic locations. Our ontology allows users to uniformly describe – and potentially merge – sequence annotations from multiple sources. Finally, data sources using FALDO can prospectively be retrieved using federalised SPARQL queries against public SPARQL endpoints and/or local private triple stores.« less

  12. FALDO: A semantic standard for describing the location of nucleotide and protein feature annotation

    DOE PAGES [OSTI]

    Bolleman, Jerven T.; Mungall, Christopher J.; Strozzi, Francesco; Baran, Joachim; Dumontier, Michel; Bonnal, Raoul J. P.; Buels, Robert; Hoehndorf, Robert; Fujisawa, Takatomo; Katayama, Toshiaki; et al

    2016-06-13

    In this study, nucleotide and protein sequence feature annotations are essential to understand biology on the genomic, transcriptomic, and proteomic level. Using Semantic Web technologies to query biological annotations, there was no standard that described this potentially complex location information as subject-predicate-object triples. Here, we have developed an ontology, the Feature Annotation Location Description Ontology (FALDO), to describe the positions of annotated features on linear and circular sequences. FALDO can be used to describe nucleotide features in sequence records, protein annotations, and glycan binding sites, among other features in coordinate systems of the aforementioned “omics” areas. Using the same datamore » format to represent sequence positions that are independent of file formats allows us to integrate sequence data from multiple sources and data types. The genome browser JBrowse is used to demonstrate accessing multiple SPARQL endpoints to display genomic feature annotations, as well as protein annotations from UniProt mapped to genomic locations. In conclusion, our ontology allows users to uniformly describe – and potentially merge – sequence annotations from multiple sources. Data sources using FALDO can prospectively be retrieved using federalised SPARQL queries against public SPARQL endpoints and/or local private triple stores.« less

  13. Electronic nose with a new feature reduction method and a multi-linear classifier for Chinese liquor classification

    SciTech Connect

    Jing, Yaqi; Meng, Qinghao Qi, Peifeng; Zeng, Ming; Li, Wei; Ma, Shugen

    2014-05-15

    An electronic nose (e-nose) was designed to classify Chinese liquors of the same aroma style. A new method of feature reduction which combined feature selection with feature extraction was proposed. Feature selection method used 8 feature-selection algorithms based on information theory and reduced the dimension of the feature space to 41. Kernel entropy component analysis was introduced into the e-nose system as a feature extraction method and the dimension of feature space was reduced to 12. Classification of Chinese liquors was performed by using back propagation artificial neural network (BP-ANN), linear discrimination analysis (LDA), and a multi-linear classifier. The classification rate of the multi-linear classifier was 97.22%, which was higher than LDA and BP-ANN. Finally the classification of Chinese liquors according to their raw materials and geographical origins was performed using the proposed multi-linear classifier and classification rate was 98.75% and 100%, respectively.

  14. AP1000{sup R} severe accident features and post-Fukushima considerations

    SciTech Connect

    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)

  15. Automated retrieval of cloud and aerosol properties from the ARM Raman lidar, part 1: feature detection

    SciTech Connect

    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.

  16. Profile evolution of Cr masked features undergoing HBr-inductivelycoupled plasma etching for use in 25 nm silicon nanoimprinttemplates

    SciTech Connect

    Olynick, Deirdre L.; Liddle, J. Alexander; Rangelow, Ivo W.

    2005-09-16

    In nanoimprint template fabrication, the profile of thetemplate features plays a significant role in the profile,release-60084

  17. Polarization dependent asymmetric magneto-resistance features in nanocrystalline diamond films

    SciTech Connect

    Bhattacharyya, Somnath

    2014-08-18

    Polar angle-dependence of magneto-resistance (AMR) in heavily nitrogen-incorporated ultra-nanocrystalline diamond (UNCD) films is recorded by applying high magnetic fields, which shows strong anisotropic features at low temperatures. The temperature-dependence of MR and AMR can reveal transport in the weak-localization regime, which is explained by using a superlattice model for arbitrary values of disorder and angles. While a propagative Fermi surface model explains the negative MR features for low degree of disorder the azimuthal angle-dependent MR shows field dependent anisotropy due to the aligned conducting channels on the layers normal to film growth direction. The analysis of MR and AMR can extract the temperature dependence of dephasing time with respect to the elastic scattering time which not only establishes quasi-two dimensional features in this system but also suggests a potential application in monitoring the performance of UNCD based quantum devices.

  18. Image feature based GPS trace filtering for road network generation and road segmentation

    DOE PAGES [OSTI]

    Yuan, Jiangye; Cheriyadat, Anil M.

    2015-10-19

    We propose a new method to infer road networks from GPS trace data and accurately segment road regions in high-resolution aerial images. Unlike previous efforts that rely on GPS traces alone, we exploit image features to infer road networks from noisy trace data. The inferred road network is used to guide road segmentation. We show that the number of image segments spanned by the traces and the trace orientation validated with image features are important attributes for identifying GPS traces on road regions. Based on filtered traces , we construct road networks and integrate them with image features to segmentmore » road regions. Lastly, our experiments show that the proposed method produces more accurate road networks than the leading method that uses GPS traces alone, and also achieves high accuracy in segmenting road regions even with very noisy GPS data.« less

  19. Image feature based GPS trace filtering for road network generation and road segmentation

    SciTech Connect

    Yuan, Jiangye; Cheriyadat, Anil M.

    2015-10-19

    We propose a new method to infer road networks from GPS trace data and accurately segment road regions in high-resolution aerial images. Unlike previous efforts that rely on GPS traces alone, we exploit image features to infer road networks from noisy trace data. The inferred road network is used to guide road segmentation. We show that the number of image segments spanned by the traces and the trace orientation validated with image features are important attributes for identifying GPS traces on road regions. Based on filtered traces , we construct road networks and integrate them with image features to segment road regions. Lastly, our experiments show that the proposed method produces more accurate road networks than the leading method that uses GPS traces alone, and also achieves high accuracy in segmenting road regions even with very noisy GPS data.

  20. Efficient Feature-Driven Visualization of Large-Scale Scientific Data

    SciTech Connect

    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.

  1. 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

  2. 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

  3. Melvin Schwartz and the discovery of the muon neutrino featured at OSTI |

    Office of Scientific and Technical Information (OSTI)

    OSTI, US Dept of Energy Office of Scientific and Technical Information Melvin Schwartz and the discovery of the muon neutrino featured at OSTI Back to the OSTI News Listing for 2010 Discoveries that unleashed new opportunities for research into the innermost structure and dynamics of matter are now featured at the OSTI DOE R&D Accomplishments website. Melvin Schwartz was the co-winner of the 1988 Nobel Prize in Physics "for the neutrino beam method and the demonstration of the

  4. New Features at OSTI's DOE R and D Accomplishments | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy Office of Scientific and Technical Information Features at OSTI's DOE R and D Accomplishments Back to the OSTI News Listing for 2005 Two Noble Laureate features have been added to OSTI's DOE R&D Accomplishments Web site: William A. Fowler shared the 1983 Nobel Prize in physics for his research into the creation of chemical elements inside stars, and Martin L. Perl, a professor at the Stanford Linear Accelerator Center (SLAC), awarded the 1995 Nobel Prize in physics for his 1975

  5. OSTI features Nobel Prize winner Leon Lederman | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information features Nobel Prize winner Leon Lederman Back to the OSTI News Listing for 2006 Read about this second son of Russian-Jewish parents who, along with his research partners, won the 1988 Nobel Prize in physics for "transforming the ghostly neutrino into an active tool of research." The OSTI-developed and -managed Web site, DOE R&D Accomplishments, has posted a feature highlighting Leon Lederman, who proposed the idea that eventually

  6. Revolutionary physicist and Nobel Prize winner featured at OSTI | OSTI, US

    Office of Scientific and Technical Information (OSTI)

    Dept of Energy Office of Scientific and Technical Information Revolutionary physicist and Nobel Prize winner featured at OSTI Back to the OSTI News Listing for 2010 Kenneth Wilson won the1982 Nobel Prize in physics "for his theory for critical phenomena in connection with phase transitions." Wilson is featured at the OSTI DOE R&D Accomplishments website. DOE R&D Accomplishments is a central forum for information about significant outcomes of past DOE R&D widely

  7. 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

  8. Automated Feature Generation in Large-Scale Geospatial Libraries for Content-Based Indexing.

    SciTech Connect

    Tobin Jr, Kenneth William; Bhaduri, Budhendra L; Bright, Eddie A; Cheriydat, Anil; Karnowski, Thomas Paul; Palathingal, Paul J; Potok, Thomas E; Price, Jeffery R

    2006-05-01

    We describe a method for indexing and retrieving high-resolution image regions in large geospatial data libraries. An automated feature extraction method is used that generates a unique and specific structural description of each segment of a tessellated input image file. These tessellated regions are then merged into similar groups, or sub-regions, and indexed to provide flexible and varied retrieval in a query-by-example environment. The methods of tessellation, feature extraction, sub-region clustering, indexing, and retrieval are described and demonstrated using a geospatial library representing a 153 km2 region of land in East Tennessee at 0.5 m per pixel resolution.

  9. Hydrologic characterization of faults and other potentially conductive geologic features in the unsaturated zone

    SciTech Connect

    Javandel, I.; Shan, C.

    1990-01-01

    The capability of characterizing near-vertical faults and other potentially highly conductive geologic features in the vicinity of a high-level-waste repository is of great importance in site characterization of underground waste-isolation projects. The possibility of using transient air pressure data at depth for characterizing these features in the unsaturated zone are investigated. Analytical solutions for calculating the pressure response of such systems are presented. Solutions are given for two types of barometric pressure fluctuations, step function and sinusoidal. 3 refs., 9 figs.

  10. 100th Celebration for DOE R&D Accomplishments Feature Pages | OSTI, US Dept

    Office of Scientific and Technical Information (OSTI)

    of Energy Office of Scientific and Technical Information 0th Celebration for DOE R&D Accomplishments Feature Pages Back to the OSTI News Listing for 2013 DOE R&D Accomplishments is a unique website and database in the OSTI collection. For over 14 years, special Feature pages have been methodically researched and useful information collected on scientists, discoveries, and historical events to include in this searchable resource. It is a rich source of DOE trivia unto itself. The

  11. DNA given a "voice"; award-winning research featured at OSTI | OSTI, US

    Office of Scientific and Technical Information (OSTI)

    Dept of Energy Office of Scientific and Technical Information DNA given a "voice"; award-winning research featured at OSTI Back to the OSTI News Listing for 2007 Nobel Laureate research that helps read the instructions of life is now featured at OSTI. Roger D. Kornberg of Stanford University won the 2006 Nobel Prize in Chemistry for his studies in transcribing DNA, the storehouse of molecular information. Dr. Kornberg noted in a PBS interview, "...the DNA by itself contains

  12. Enrico Fermi winner John B. Goodenough featured at OSTI | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy Office of Scientific and Technical Information John B. Goodenough featured at OSTI Back to the OSTI News Listing for 2009 For his "lasting contributions to materials science and technology, especially the science underlying lithium-ion batteries," John B. Goodenough was named a winner of the 2009 Enrico Fermi Award, one of the most prestigious science and technology awards awarded by the U.S. Government. View the feature on Goodenough at the DOE R&D Accomplishments

  13. What's playing now at ScienceCinema? See the latest feature. | OSTI, US

    Office of Scientific and Technical Information (OSTI)

    Dept of Energy Office of Scientific and Technical Information What's playing now at ScienceCinema? See the latest feature. Back to the OSTI News Listing for 2012 Currently playing at ScienceCinema: the U.S. ITER Project Moving Forward. See the latest featured video, rotated every few weeks, viewed directly from the ScienceCinema homepage. Then search the database for related videos. ScienceCinema was developed by OSTI and provides precise and time-saving search of the spoken words of video

  14. Industry Feature Archives | U.S. DOE Office of Science (SC)

    Office of Science (SC)

    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)

  15. Method for photolithographic definition of recessed features on a semiconductor wafer utilizing auto-focusing alignment

    DOEpatents

    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. Feature-based Analysis of Plasma-based Particle Acceleration Data

    SciTech Connect

    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.

  17. Mitochondrial DNA deletion in a patient with combined features of Leigh and Pearson syndromes

    SciTech Connect

    Blok, R.B.; Thorburn, D.R.; Danks, D.M.

    1994-09-01

    We describe a heteroplasmic 4237 bp mitochondrial DNA (mtDNA) deletion in an 11 year old girl who has suffered from progressive illness since birth. She has some features of Leigh syndrome (global developmental delay with regression, brainstem dysfunction and lactic acidosis), together with other features suggestive of Pearson syndrome (history of pancytopenia and failure to thrive). The deletion was present at a level greater than 50% in skeletal muscle, but barely detectable in skin fibroblasts following Southern blot analysis, and only observed in blood following PCR analysis. The deletion spanned nt 9498 to nt 13734, and was flanked by a 12 bp direct repeat. Genes for cytochrome c oxidase subunit III, NADH dehydrogenase subunits 3, 4L, 4 and 5, and tRNAs for glycine, arginine, histidine, serine({sup AGY}) and leucine({sup CUN}) were deleted. Southern blotting also revealed an altered Apa I restriction site which was shown by sequence analysis to be caused by G{r_arrow}A nucleotide substitution at nt 1462 in the 12S rRNA gene. This was presumed to be a polymorphism. No abnormalities of mitochondrial ultrastructure, distribution or of respiratory chain enzyme complexes I-IV in skeletal muscle were observed. Mitochondrial disorders with clinical features overlapping more than one syndrome have been reported previously. This case further demonstrates the difficulty in correlating observed clinical features with a specific mitochondrial DNA mutation.

  18. Dynamic-Feature Extraction, Attribution and Reconstruction (DEAR) Method for Power System Model Reduction

    SciTech Connect

    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.

  19. Method for photolithographic definition of recessed features on a semiconductor wafer utilizing auto-focusing alignment

    DOEpatents

    Farino, Anthony J.; Montague, Stephen; Sniegowski, Jeffry J.; Smith, James H.; McWhorter, Paul J.

    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.

  20. DOE Physicists at Work feature series | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information feature series Back to the OSTI News Listing for 2005 The drying up of his research funds may have been the best thing that ever happened to Andrew Post-Zwicker, head of the Science Education Program at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL)