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Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

FIRE SUPPRESSING AGENT: A HALON ALTERNATIVE ...  

Science Conference Proceedings (OSTI)

... industry in closed-loop systems for automobiles. ... possible Steam inhalation and steam bum Approximately ... used in the trade and automobile industry ...

2011-10-27T23:59:59.000Z

2

Feasibility and design of blast mitigation systems for naval applications using water mist fire suppression systems  

E-Print Network (OSTI)

The recent trend of using fine water mist systems to replace the legacy HALON- 1301 fire suppression systems warrants further study into other applications of the water mist systems. Preliminary research and investigation ...

Kitchenka, Julie A

2004-01-01T23:59:59.000Z

3

Suppressant: Halon 1301  

Science Conference Proceedings (OSTI)

... Acid Gas Production in Inhibited Diffusion Flames.. ... and Identification of the Breakdown Products of ... Influence of the Ignition Source Energy on the ...

2013-04-26T23:59:59.000Z

4

HALON REPLACEMENT RESEARCH - A HISTORICAL ...  

Science Conference Proceedings (OSTI)

... Tapscott, RE, “Progress Report on Alternatives and Replacements for Halons,” E&P Forum Halon Phase-Out Workshop, London, United Kingdom ...

2011-10-11T23:59:59.000Z

5

Suppressant:Water & Aqueous Solutions  

Science Conference Proceedings (OSTI)

Suppressant:Water & Aqueous Solutions. ... Reuther, JJ; 1991. Fine Water Sprays for Fire Protection: A Halon Replacement Option.. ...

2011-10-28T23:59:59.000Z

6

Explosion suppression system  

DOE Patents (OSTI)

An explosion suppression system and triggering apparatus therefor are provided for quenching gas and dust explosions. An electrically actuated suppression mechanism which dispenses an extinguishing agent into the path ahead of the propagating flame is actuated by a triggering device which is light powered. This triggering device is located upstream of the propagating flame and converts light from the flame to an electrical actuation signal. A pressure arming device electrically connects the triggering device to the suppression device only when the explosion is sensed by a further characteristic thereof beside the flame such as the pioneer pressure wave. The light powered triggering device includes a solar panel which is disposed in the path of the explosion and oriented between horizontally downward and vertical. Testing mechanisms are also preferably provided to test the operation of the solar panel and detonator as well as the pressure arming mechanism.

Sapko, Michael J. (Finleyville, PA); Cortese, Robert A. (Pittsburgh, PA)

1992-01-01T23:59:59.000Z

7

Continuously Changing Ranking of HALON Alternatives  

Science Conference Proceedings (OSTI)

... Page 3. Leadin? 1301 Alternatives F F Baseline: HALON 1301 (CRBr) F - C - Triodide: (CF3I) Fe-25: (C2HFs) F F F -C- ...

2011-10-04T23:59:59.000Z

8

Pressure suppression containment system  

DOE Patents (OSTI)

A pressure suppression containment system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and a gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel. The wetwell pool includes a plenum for receiving the non-condensable gas carried with steam from the drywell following a loss-of coolant-accident (LOCA). The wetwell plenum is vented to a plenum above the GDCS pool following the LOCA for suppressing pressure rise within the containment vessel. A method of operation includes channeling steam released into the drywell following the LOCA into the wetwell pool for cooling along with the non-condensable gas carried therewith. The GDCS pool is then drained by gravity, and the wetwell plenum is vented into the GDCS plenum for channeling the non-condensable gas thereto.

Gluntz, Douglas M. (San Jose, CA); Townsend, Harold E. (San Jose, CA)

1994-03-15T23:59:59.000Z

9

Pressure suppression containment system  

DOE Patents (OSTI)

A pressure suppression containment system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and a gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel. The wetwell pool includes a plenum for receiving the non-condensable gas carried with steam from the drywell following a loss-of-coolant-accident (LOCA). The wetwell plenum is vented to a plenum above the GDCS pool following the LOCA for suppressing pressure rise within the containment vessel. A method of operation includes channeling steam released into the drywell following the LOCA into the wetwell pool for cooling along with the non-condensable gas carried therewith. The GDCS pool is then drained by gravity, and the wetwell plenum is vented into the GDCS plenum for channeling the non-condensable gas thereto. 6 figures.

Gluntz, D.M.; Townsend, H.E.

1994-03-15T23:59:59.000Z

10

FIRE SUPPRESSION AND INERTION TESTING OF HALON ...  

Science Conference Proceedings (OSTI)

... the agent is important in determining the storage volume requirements. ... minimum inemng concentration for both propane and methane contrasts ...

2011-09-27T23:59:59.000Z

11

Pressure suppression system  

DOE Patents (OSTI)

A pressure suppression system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and an enclosed gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel. The GDCS pool includes a plenum for receiving through an inlet the non-condensable gas carried with steam from the drywell following a loss-of-coolant accident (LOCA). A condenser is disposed in the GDCS plenum for condensing the steam channeled therein and to trap the non-condensable gas therein. A method of operation includes draining the GDCS pool following the LOCA and channeling steam released into the drywell following the LOCA into the GDCS plenum for cooling along with the non-condensable gas carried therewith for trapping the gas therein.

Gluntz, Douglas M. (San Jose, CA)

1994-01-01T23:59:59.000Z

12

Blast Effects Suppression System  

The HydroSuppressor system was developed to protect critical facilities from the devastating effects of blast from a vehicle bomb.  HydroSuppressor ...

13

HALON 1301 USE IN OIL AND GAS PRODUCTION ...  

Science Conference Proceedings (OSTI)

... The unique aspects of producing oil and gas in the ... Halon 1301 is a critical component to safe production in totally enclosed arctic facilities ...

2011-09-27T23:59:59.000Z

14

FLAMMABLE LIQUID STOREROOM 1: HALON 1301 ...  

Science Conference Proceedings (OSTI)

... fuel, hydraulic fluid, or lubricating oil) leak. ... ODM) at four heights to measure smoke production. ... in fire suppression for small, tight compart- ments ...

2011-10-04T23:59:59.000Z

15

Test results of lithium pool-air reaction suppression systems  

Science Conference Proceedings (OSTI)

Engineered reaction suppression systems were demonstrated to be effective in suppressing lithium pool-air reactions for lithium quantities up to 100 kg. Lithium pool-air reaction suppression system tests were conducted to evaluate suppression system effectiveness for potential use in fusion facilities in mitigating consequences of postulated lithium spills. Small-scale perforated and sacrificial cover plate suppression systems with delayed inert gas purging proved effective in controlling the lithium-air interaction for lithium quantities near 15 kg at initial temperatures up to 450/sup 0/C. A large-scale suppression system with a sacrificial cover, a diverter plate, an inert gas atmosphere, and remotely retrievable catch pans proved effective in controlling lithium pool-air interaction for a 100-kg lithium discharge at an initial temperature of 550/sup 0/C. This suppression system limited the maximum pool temperature to about 600/sup 0/C less than that expected for a similar lithium pool-air reaction without a suppression system. Lithium aerosol release from this large-scale suppression system was a factor of about 10,000 less than that expected for a lithium pool-air reaction with no suppression system. Remote retrieval techniques for lithium cleanup, such as (1) in-place lithium siphoning and overhead crane dismantling, and (2) lithium catch pan removal by use of an overhead crane, were demonstrated as part of this large-scale test.

Jeppson, D.W.

1987-02-01T23:59:59.000Z

16

REPLACEMENT OF HALON FIRE EXTINGUISHANTS- THE ...  

Science Conference Proceedings (OSTI)

... This activity will be increasingly managed within the framework of the MOD-wide environmental management system now being adopted. ...

2011-10-04T23:59:59.000Z

17

Context: Suppression  

Science Conference Proceedings (OSTI)

... of the Halon Replacement Program for Army Ground Combat Vehicles ... Gas Measurement Using FTIR, GC/MS and Ion Selective Electrode Methods ...

2013-05-03T23:59:59.000Z

18

Method and system for modulation of gain suppression in high average power laser systems  

Science Conference Proceedings (OSTI)

A high average power laser system with modulated gain suppression includes an input aperture associated with a first laser beam extraction path and an output aperture associated with the first laser beam extraction path. The system also includes a pinhole creation laser having an optical output directed along a pinhole creation path and an absorbing material positioned along both the first laser beam extraction path and the pinhole creation path. The system further includes a mechanism operable to translate the absorbing material in a direction crossing the first laser beam extraction laser path and a controller operable to modulate the second laser beam.

Bayramian, Andrew James (Manteca, CA)

2012-07-31T23:59:59.000Z

19

Suppression of dynamics in coupled discrete systems in interaction with an extended environment  

E-Print Network (OSTI)

We report the suppression of dynamics and occurrence of quiescent states in an extended system of coupled discrete dynamical systems. This phenomenon is induced by interaction with another similar system with a different and damped dynamics which we call an extended environment. Both the system and the environment are in a feedback loop and their mutual influence leads to suppression of dynamic activity. We illustrate this in the specific case of a system of coupled neurons modelled by a 2-dimensional discrete system called Rulkov maps. A detailed analysis is carried out by considering single units of discrete systems where control to steady states is induced by an external damped system. This is then extended to rings and lattices. As an important application, we also present how the excitation waves produced due to defect neurons can be suppressed by interaction with a system of passive cells.

Snehal M. Shekatkar; G. Ambika

2013-06-10T23:59:59.000Z

20

Digital Filter Algorithm Based on Whistle Sound Suppression System Design  

Science Conference Proceedings (OSTI)

System uses the voice codec chip analog voice signals TLV320AIC23 A/D conversion, digital audio is passed to the DSP chip TMS320VC5409 sequence processing, DSP algorithms using FFT and CZT transform algorithm the number of sequences of audio spectrum ... Keywords: Acoustic feedback, FFT transform, CZT transform, IIR filter, TMS320VC5409

Lei Liu; Honggang Li; Xiaochen Hu

2012-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

System and method that suppresses intensity fluctuations for free space high-speed optical communication  

DOE Patents (OSTI)

A high-speed (Gbps), free space optical communication system is based on spectral encoding of radiation from a wide band light source, such as a laser. By using partially coherent laser beams in combination with a relatively slow photosensor, scintillations can be suppressed by orders of magnitude for distances of more than 10 km. To suppress the intensity fluctuations due to atmospheric turbulence, a source with partial transverse coherence in combination with slow response time photodetector is used. Information is encoded in the spectral domain of a wideband optical source by modulation of spectral amplitudes. A non-coherent light source with wide spectrum (an LED, for example) may be used for high-speed communication over short (less than about a mile) distances.

Berman, Gennady P. (Los Alamos, NM); Bishop, Alan R. (Los Alamos, NM); Nguyen, Dinh C. (Los Alamos, NM); Chernobrod, Boris M. (Santa Fe, NM); Gorshkov, Vacheslav N. (Kiev, UA)

2009-10-13T23:59:59.000Z

22

Fire Suppression in Aircraft  

Science Conference Proceedings (OSTI)

... Imperial Japanese Navy Dry Bay and Ullage Fire Suppression System Concept ... Calibration Plot of Average Normalized Peak-to-valley Signals vs. ...

2011-12-27T23:59:59.000Z

23

Multivent effects in a large scale boiling water reactor pressure suppression system  

Science Conference Proceedings (OSTI)

The steam-driven GKSS pressure suppression test facility, which contains 3 full scale vent pipes, has been used for 5 years to investigate the postulated loss-of-coolant accident in a Mark II and Type 69 boiling water reactor. Using the results from several of these tests, wetwell boundary load data (peak pressures and spectral power) during the chugging stage, have been evaluated for sparse pool response (one and two vents in the three vent pool) and for full pool response (one, two, or three vent operation in pools of constant wetwell pool area per vent). The sparse pool results indicate the pool-system, chug event boundary loads are strongly dependent on wetwell pool area per vent, with the load increasing with decreasing area. The full pool results show a substantial increase in the pool-system, chug event boundary loads upon a change from single cell to double cell operation; only minor change occurs in going from double to triple cell operation.

McCauley, E.W.; Aust, E.; Schwan, H.

1984-07-06T23:59:59.000Z

24

Review of the Los Alamos National Laboratory Chemistry and Metallurgy Research Facility Fire Suppression Vital Safety System, January 2012  

NLE Websites -- All DOE Office Websites (Extended Search)

the the Los Alamos National Laboratory Chemistry and Metallurgy Research Facility Fire Suppression Vital Safety System January 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy i Table of Contents 1.0 Purpose ................................................................................................................................................... 1 2.0 Background ............................................................................................................................................ 1 3.0 Scope ...................................................................................................................................................... 1

25

Review of the Los Alamos National Laboratory Chemistry and Metallurgy Research Facility Fire Suppression Vital Safety System, January 2012  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the the Los Alamos National Laboratory Chemistry and Metallurgy Research Facility Fire Suppression Vital Safety System January 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy i Table of Contents 1.0 Purpose ................................................................................................................................................... 1 2.0 Background ............................................................................................................................................ 1 3.0 Scope ...................................................................................................................................................... 1

26

Review of the Los Alamos National Laboratory Waste Characterization, Reduction, and Repackaging Facility Fire Suppression System, January 2012  

NLE Websites -- All DOE Office Websites (Extended Search)

Waste Waste Characterization, Reduction, and Repackaging Facility Fire Suppression System January 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy i Table of Contents 1.0 Purpose ................................................................................................................................................... 1 2.0 Background ............................................................................................................................................ 1 3.0 Scope ...................................................................................................................................................... 1

27

Review of the Los Alamos National Laboratory Waste Characterization, Reduction, and Repackaging Facility Fire Suppression System, January 2012  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Waste Waste Characterization, Reduction, and Repackaging Facility Fire Suppression System January 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy i Table of Contents 1.0 Purpose ................................................................................................................................................... 1 2.0 Background ............................................................................................................................................ 1 3.0 Scope ...................................................................................................................................................... 1

28

Independent Oversight Review of the Technical Area 55 Safety Class Fire Suppression System at Los Alamos National Laboratory, December 2013  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Technical Area 55 Technical Area 55 Safety Class Fire Suppression System at Los Alamos National Laboratory December 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose .................................................................................................................................................... 1 2.0 Background ............................................................................................................................................. 1 3.0 Scope ....................................................................................................................................................... 2

29

HALON 1301 RETROFIT IMPLEMENTATION ...  

Science Conference Proceedings (OSTI)

... While turbine and diesel propulsion plants have high temperature surfaces, these cool much faster. Unvented high pressure steam remains in the ...

2011-10-04T23:59:59.000Z

30

Suppressant: Metal Containing Compounds  

Science Conference Proceedings (OSTI)

... for Suppression of Fuel Spray Explosions in Military Vehicle Crew Compartments.. ... Study of Water Mist Suppression of Electrical Fires for ...

2013-04-25T23:59:59.000Z

31

Fire Suppression Systems  

Science Conference Proceedings (OSTI)

... docks and an electrical substation that provided ... pump, located on the ground floor, supplied ... sizes under “normally expected” operating conditions. ...

32

Independent Oversight Review of the Fire Protection Program at the Pacific Northwest National Laboratory and the Fire Suppression System at the Radiochemical Processing Laboratory, September 2013  

NLE Websites -- All DOE Office Websites (Extended Search)

Independent Oversight Review of the Independent Oversight Review of the Fire Protection Program at Pacific Northwest National Laboratory and the Fire Suppression System at the Radiochemical Processing Laboratory May 2011 February 2013 September 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose.................................................................................................................................................... 1 2.0 Background ............................................................................................................................................. 1 3.0 Scope....................................................................................................................................................... 2

33

Independent Oversight Review of the Fire Protection Program at the Pacific Northwest National Laboratory and the Fire Suppression System at the Radiochemical Processing Laboratory, September 2013  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Independent Oversight Review of the Independent Oversight Review of the Fire Protection Program at Pacific Northwest National Laboratory and the Fire Suppression System at the Radiochemical Processing Laboratory May 2011 February 2013 September 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose.................................................................................................................................................... 1 2.0 Background ............................................................................................................................................. 1 3.0 Scope....................................................................................................................................................... 2

34

Computational fluid dynamics simulation of the air/suppressant flow in an uncluttered F18 engine nacelle  

DOE Green Energy (OSTI)

For the purposes of designing improved Halon-alternative fire suppression strategies for aircraft applications, Computational Fluid Dynamics (CFD) simulations of the air flow, suppressant transport, and air-suppressant mixing within an uncluttered F18 engine nacelle were performed. The release of inert gases from a Solid Propellant Gas Generator (SPGG) was analyzed at two different injection locations in order to understand the effect of injection position on the flow patterns and the mixing of air and suppression agent. An uncluttered engine nacelle was simulated to provide insight into the global flow features as well as to promote comparisons with previous nacelle fire tests and recent water tunnel tests which included little or no clutter. Oxygen concentration levels, fuel/air residence times that would exist if a small fuel leak were present, velocity contours, and streamline patterns are presented inside the engine nacelle. The numerical results show the influence of the gent release location on regions of potential flame extinction due to oxygen inerting and high flame strain. The occurrence of inflow through the exhaust ducts on the aft end of the nacelle is also predicted. As expected, the predicted oxygen concentration levels were consistently higher than the measured levels since a fire was not modeled in this analysis. Despite differences in the conditions of these simulations and the experiments, good agreement was obtained between the CFD predictions and the experimental measurements.

Lopez, A.R.; Gritzo, L.A.; Hassan, B.

1997-06-01T23:59:59.000Z

35

PHYSIOLOGICALLY BASED MODELING OF HALON ...  

Science Conference Proceedings (OSTI)

... fibrillation, never regained consciousness and died ... 5 min) human inhalation exposures to ... chemicals predicted in humans by physiologically based ...

2011-07-01T23:59:59.000Z

36

HALON & CFC DESTRUCTION, RECOVERY, RECYCLING ...  

Science Conference Proceedings (OSTI)

... Refrigeration and Air Conditioning .. Foam -- Aerosol and Sterilants ... EMERGING . - Low emissions and cost; commercial unit available for testing. ...

2011-09-27T23:59:59.000Z

37

PAPER FOR HALON ALTERNATIVES TECHNICAL ...  

Science Conference Proceedings (OSTI)

... ROOMS, HOSPITAL EQUIPMENT SUCH AS CAT SCAN AND ... STORAGE ROOMS LIBRARIES MOTORCRAFT (BOATS) MUSEUMS OFFICE ...

2011-10-06T23:59:59.000Z

38

Envimnmental Aspects of Halon Replacements:  

Science Conference Proceedings (OSTI)

... In the work to be described subsequently, the modeling capabilities of LLNL and UINC were employed in order to convert the basic laboratory data ...

2011-10-18T23:59:59.000Z

39

RECOMMENDING EXPOSURE LIMITS FOR HALON ...  

Science Conference Proceedings (OSTI)

... negative. In the laboratory, HCFC-123 is a mild anesthetic 65 Page 4. ... No epidemiology In vitro tests - Ames test negative Acute ...

2011-12-06T23:59:59.000Z

40

Suppressant: Electric Fields  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. Suppressant:Electric Fields. Fire Extinguishment of Pool Flames by Means of a DC electric Field.. ...

2011-11-04T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Atomic clocks with suppressed blackbody radiation shift  

E-Print Network (OSTI)

We develop a nonstandard concept of atomic clocks where the blackbody radiation shift (BBRS) and its temperature fluctuations can be dramatically suppressed (by one to three orders of magnitude) independent of the environmental temperature. The suppression is based on the fact that in a system with two accessible clock transitions (with frequencies $\

Yudin, V I; Okhapkin, M V; Bagayev, S N; Tamm, Chr; Peik, E; Huntemann, N; Mehlstaubler, T E; Riehle, F

2011-01-01T23:59:59.000Z

42

Optimal control of quantum gates and suppression of decoherence in a system of interacting two-level particles  

E-Print Network (OSTI)

Methods of optimal control are applied to a model system of interacting two-level particles (e.g., spin-half atomic nuclei or electrons or two-level atoms) to produce high-fidelity quantum gates while simultaneously negating the detrimental effect of decoherence. One set of particles functions as the quantum information processor, whose evolution is controlled by a time-dependent external field. The other particles are not directly controlled and serve as an effective environment, coupling to which is the source of decoherence. The control objective is to generate target one- and two-qubit unitary gates in the presence of strong environmentally-induced decoherence and under physically motivated restrictions on the control field. The quantum-gate fidelity, expressed in terms of a novel state-independent distance measure, is maximized with respect to the control field using combined genetic and gradient algorithms. The resulting high-fidelity gates demonstrate the feasibility of precisely guiding the quantum evolution via optimal control, even when the system complexity is exacerbated by environmental coupling. It is found that the gate duration has an important effect on the control mechanism and resulting fidelity. An analysis of the sensitivity of the gate performance to random variations in the system parameters reveals a significant degree of robustness attained by the optimal control solutions.

Matthew Grace; Constantin Brif; Herschel Rabitz; Ian A. Walmsley; Robert L. Kosut; Daniel A. Lidar

2007-02-14T23:59:59.000Z

43

Characterization and Suppression of the Electromagnetic Interference Induced Phase Shift in the JLab FEL Photo - Injector Advanced Drive Laser System  

SciTech Connect

The drive laser for the photo-cathode gun used in the JLab Free Electron Laser (FEL) facility had been experiencing various phase shifts on the order of tens of degrees (>20{sup o} at 1497 MHz or >40ps) when changing the Advanced Drive Laser (ADL) [2][3][4] micro-pulse frequencies. These phase shifts introduced multiple complications when trying to setup the accelerator for operation, ultimately inhibiting the robustness and overall performance of the FEL. Through rigorous phase measurements and systematic characterizations, we determined that the phase shifts could be attributed to electromagnetic interference (EMI) coupling into the ADL phase control loop, and subsequently resolved the issue of phase shift to within tenths of a degree (<0.5{sup o} at 1497 MHz or <1ps). The diagnostic method developed and the knowledge gained through the entire process will prove to be invaluable for future designs of similar systems.

F. G. Wilson, D. Sexton, S. Zhang

2011-09-01T23:59:59.000Z

44

ZERO SUPPRESSION FOR RECORDERS  

DOE Patents (OSTI)

A zero-suppression circuit for self-balancing recorder instruments is presented. The essential elements of the circuit include a converter-amplifier having two inputs, one for a reference voltage and the other for the signal voltage under analysis, and a servomotor with two control windings, one coupled to the a-c output of the converter-amplifier and the other receiving a reference input. Each input circuit to the converter-amplifier has a variable potentiometer and the sliders of the potentiometer are ganged together for movement by the servoinotor. The particular noveity of the circuit resides in the selection of resistance values for the potentiometer and a resistor in series with the potentiometer of the signal circuit to ensure the full value of signal voltage variation is impressed on a recorder mechanism driven by servomotor.

Fort, W.G.S.

1958-12-30T23:59:59.000Z

45

HALON 1211 ALTERNATIVES FOR FIGHTING JET ENGINE ...  

Science Conference Proceedings (OSTI)

... 3. Ignite the fire and start the trickle. 4. Preburn for 60 sec. 5. Load the engine and windmill for 60 sec, initiate the wind. 6. Unload the engine. ...

2011-10-11T23:59:59.000Z

46

Thermal and catalytic hydrodehalogenation of halon 1301 ...  

Science Conference Proceedings (OSTI)

... as hydrolysis, steam reforming, dehalogenation, dehydrohalogenation as ... probably be the thermal cleavage of ... of methane-based car,Qon moieties ...

2011-10-04T23:59:59.000Z

47

PROGRESS TOWARD REPLACING HALON 2402 FOR ...  

Science Conference Proceedings (OSTI)

... indicate that all perchlorates examined may have ... Thermodynamic Data (TRCI'HERMO), the NMERI ... and nitrogen tetroxide experimental data. ...

2011-10-11T23:59:59.000Z

48

NITROGEN GAS AS A HALON REPLACEMENT ...  

Science Conference Proceedings (OSTI)

... TABLE 4. INERTION CONCENTRATIONS. - m Fuel Inertion Conc., vol.% Butane 40.0 44.0 Propane 42.0 46.2 ... COST AND AVAILABILITY ...

2011-10-20T23:59:59.000Z

49

PRINCIPAL SPEAKER ASBESTOS, PCB'S AND HALONS ...  

Science Conference Proceedings (OSTI)

... The government has assumed responsibility for the disposal of used tires financed as you may have guessed by a new tax on every tire sold. ...

2011-11-15T23:59:59.000Z

50

Presented at HALON OPTIONS TECHNICAL WORKING ...  

Science Conference Proceedings (OSTI)

... The internal measurements were taken by Hughes Associates, Inc. using a KVB/Analect Diamond 20 FTIR with calcium fluoride (CaF2) windows. ...

2011-10-04T23:59:59.000Z

51

PROCESS FOR CONVERSION OF SURPLUS HALONS ...  

Science Conference Proceedings (OSTI)

... banned in 1996 and strict import-export and recycling ... of minor products during the gas-phase reaction of ... a) halogen in product HFC gases which is ...

2011-10-11T23:59:59.000Z

52

INVESTIGATION INTO HALON 1301 REPLACEMENTS: A ...  

Science Conference Proceedings (OSTI)

... acetic acid, potassium salt; KC&,O, The chemical selection focuses on dry chemicals in a solution with water. ... acetic acid, sodium salt; CH3CO$4a ...

2011-10-27T23:59:59.000Z

53

AIR FORCE APPROACH TO TOXICOLOGY OF HALON ...  

Science Conference Proceedings (OSTI)

... including a thorough investigation of historical tumor data in naive rats and ... and [4-chloro-6-(2,3-xylidino)-2- py~imidinylthio]acetic acid (Wy-14,643 ...

2011-10-18T23:59:59.000Z

54

HALON ISSUES IN DEVELOPING COUNTRIES (505) 272 ...  

Science Conference Proceedings (OSTI)

... Brazil Chile Egypt Ghana Jordan Malawi Mexico Phillipines Thailand Tunisia UWWY Zambia ... inventory), Turkey Thailand, ...

2011-10-11T23:59:59.000Z

55

US ARMY GROUND VEHICLE HALON REPLACEMENT ...  

Science Conference Proceedings (OSTI)

... test fixture has been constructed from a derelict ground vehicle hull ... exposure levels: ion selective electrodes (grab hag sampling), sorbent tubes ...

2011-10-04T23:59:59.000Z

56

RESULTS OF HALON 1301 AND HFC-125 ...  

Science Conference Proceedings (OSTI)

... bottles have an internal volume of 800 in3 and are pressurized to 825 psig at 70°F. For cold discharges, the bottles are kept in a chiller for a ...

2011-10-04T23:59:59.000Z

57

1 HUMAN HEALTH SAFETY EVALUATION OF HALON ...  

Science Conference Proceedings (OSTI)

... is the establishment of cardiac response of each individual dog to ... 10,000** 7 days** ... test atmosphere the bag should be stored in the dark or under ...

2011-07-01T23:59:59.000Z

58

IMPACT OF HALON REPLACEMENT ON AIRCRAFT ENGINE ...  

Science Conference Proceedings (OSTI)

... If the extinguisher unit is installed in a location that adversely affects the aircraft's center of gravity (CG), ballast may have to be added elsewhere. ...

2011-11-03T23:59:59.000Z

59

EXAMINATION AND COMPARISON OF EXISTING HALON ...  

Science Conference Proceedings (OSTI)

... mA provided the source for the electrical arc. ... the metal conductors, the additional electric energy created ... effect, a small hole was drilled through the ...

2011-10-13T23:59:59.000Z

60

DIODE LASER-BASED MEASUREMENTS OF FUELS ...  

Science Conference Proceedings (OSTI)

... Recent work [3] has shown that hydrogen fluoride gas (HF) is the principal toxic gas produced during fire suppression by Halon 1301 and by ...

2012-10-26T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Suppressed Charmed B Decay  

SciTech Connect

This thesis describes the measurement of the branching fractions of the suppressed charmed B{sup 0} {yields} D{sup (*)-} a{sub 0}{sup +} decays and the non-resonant B{sup 0} {yields} D{sup (*)-} {eta}{pi}{sup +} decays in approximately 230 million {Upsilon}(4S) {yields} B{bar B} events. The data have been collected with the BABAR detector at the PEP-II B factory at the Stanford Linear Accelerator Center in California. Theoretical predictions of the branching fraction of the B{sup 0} {yields} D{sup (*)-} a{sub 0}{sup +} decays show large QCD model dependent uncertainties. Non-factorizing terms, in the naive factorization model, that can be calculated by QCD factorizing models have a large impact on the branching fraction of these decay modes. The predictions of the branching fractions are of the order of 10{sup -6}. The measurement of the branching fraction gives more insight into the theoretical models. In general a better understanding of QCD models will be necessary to conduct weak interaction physics at the next level. The presence of CP violation in electroweak interactions allows the differentiation between matter and antimatter in the laws of physics. In the Standard Model, CP violation is incorporated in the CKM matrix that describes the weak interaction between quarks. Relations amongst the CKM matrix elements are used to present the two relevant parameters as the apex of a triangle (Unitarity Triangle) in a complex plane. The over-constraining of the CKM triangle by experimental measurements is an important test of the Standard Model. At this moment no stringent direct measurements of the CKM angle {gamma}, one of the interior angles of the Unitarity Triangle, are available. The measurement of the angle {gamma} can be performed using the decays of neutral B mesons. The B{sup 0} {yields} D{sup (*)-} a{sub 0}{sup +} decay is sensitive to the angle {gamma} and, in comparison to the current decays that are being employed, could significantly enhance the measurement of this angle. However, the low expected branching fraction for the B{sup 0} {yields} D{sup (*)-} a{sub 0}{sup +} decay channels could severely impact the measurement. A prerequisite of the measurement of the CKM angle is the observation of the B{sup 0} {yields} D{sup (*)-} a{sub 0}{sup +} decay on which this thesis reports. The BABAR experiment consists of the BABAR detector and the PEP-II e{sup +}e{sup -} collider. The design of the experiment has been optimized for the study of CP violation in the decays of neutral B mesons but is also highly suitable for the search for rare B decays such as the B{sup 0} {yields} D{sup (*)-} a{sub 0}{sup +} decay. The PEP-II collider operates at the {Upsilon}(4S) resonance and is a clean source of B{bar B} meson pairs.

Snoek, Hella Leonie; /Vrije U., Amsterdam

2011-11-28T23:59:59.000Z

62

Atomic clocks with suppressed blackbody radiation shift  

E-Print Network (OSTI)

We develop a nonstandard concept of atomic clocks where the blackbody radiation shift (BBRS) and its temperature fluctuations can be dramatically suppressed (by one to three orders of magnitude) independent of the environmental temperature. The suppression is based on the fact that in a system with two accessible clock transitions (with frequencies v1 and v2) which are exposed to the same thermal environment, there exists a "synthetic" frequency v_{syn} (v1-e12 v2) largely immune to the BBRS. As an example, it is shown that in the case of ion 171Yb+ it is possible to create a clock in which the BBRS can be suppressed to the fractional level of 10^{-18} in a broad interval near room temperature (300\\pm 15 K). We also propose a realization of our method with the use of an optical frequency comb generator stabilized to both frequencies v1 and v2. Here the frequency v_{syn} is generated as one of the components of the comb spectrum and can be used as an atomic standard.

V. I. Yudin; A. V. Taichenachev; M. V. Okhapkin; S. N. Bagayev; Chr. Tamm; E. Peik; N. Huntemann; T. E. Mehlstaubler; F. Riehle

2011-03-03T23:59:59.000Z

63

Extra focal convective suppressing solar collector. Final technical progress report  

DOE Green Energy (OSTI)

This progress report describes work done on the Extra Focal Convective Suppressing Solar Collector. The topics of the report include sensor refinement for the tracking electronics, tracking controller refinement, system optics evaluation, absorber system material evaluation and performance, tracking hardware evaluation and refinement, and full scale prototype construction and testing.

NONE

1996-05-01T23:59:59.000Z

64

Kink instability suppression with stochastic cooling pickup and kicker  

Science Conference Proceedings (OSTI)

The kink instability is one of the major beam dynamics issues of the linac-ring based electron ion collider. This head-tail type instability arises from the oscillation of the electron beam inside the opposing ion beam. It must be suppressed to achieve the desired luminosity. There are various ways to suppress the instability, such as tuning the chromaticity in the ion ring or by a dedicated feedback system of the electron beam position at IP, etc. However, each method has its own limitation. In this paper, we will discuss an alternative opportunity of suppressing the kink instability of the proposed eRHIC at BNL using the existing pickup-kicker system of the stochastic cooling system in RHIC.

Hao Y.; Blaskiewicz, M.; Litvinenko, V.N.; Ptitsyn, V.

2012-05-20T23:59:59.000Z

65

Fire suppression and detection equipment  

SciTech Connect

Inspection and testing guidelines go beyond the 'Code of Federal Regulation'. Title 30 of the US Code of Federal Regulations (30 CFR) contains requirements and references to national standards for inspection, testing and maintenance of fire suppression and detection equipment for mine operators. However, federal requirements have not kept pace with national standards and best practices. The article lists National Fire Protection (NFPA) standards that are referenced by the US Mine Safety and Health Administration (MSHA) in 30 CFR. It then discusses other NFPA Standards excluded from 30 CFR and explains the NFPA standard development process. 2 refs., 3 tabs., 5 photos.

E.E. Bates [HSB Professional Loss Control, Lexington, KY (United States)

2006-01-15T23:59:59.000Z

66

Evaluation of using active circuitry for substrate noise suppression  

Science Conference Proceedings (OSTI)

The performance of system-on-chips can be severely degraded if noisy circuits interfere with sensitive circuits through the common silicon substrate. Many methods have been proposed to suppress such substrate noise, ranging from designing circuits that ... Keywords: active noise decoupling, substrate coupling, substrate modeling

Rashid Farivar; Simon Kristiansson; Fredrik Ingvarson; Kjell O. Jeppson

2007-03-01T23:59:59.000Z

67

Investigation of diesel-fuel fire vulnerability parameters in armored personnel carriers due to ballistic penetration. Interim report, March 1984-March 1985  

Science Conference Proceedings (OSTI)

A series of full-scale ballistics tests were conducted to evaluate the diesel fuel fire vulnerability parameters in armored personnel carriers due to penetration by 90-mm HEAT rounds. The tests considered fuel cell penetration through 1.5-inch aluminum armor with the four variables: fuel temperature, fuel antimisting additive concentration, air availability, and Halon 1301 fire-suppression system. The test results are summarized.

Kanakia, M.D.; Wright, B.R.

1985-03-22T23:59:59.000Z

68

Suppression of multiphoton intrashell resonances in Li Rydberg atoms  

Science Conference Proceedings (OSTI)

Multiphoton intrashell transitions in strongly driven Li (n=25) Rydberg atoms are studied experimentally. Orthogonal dc electric and magnetic fields lift the degeneracy of the n shell and define the eccentricity e of the initial coherent elliptic states, which are formed by laser excitation and subsequent adiabatic transformation. The intrashell transitions are driven by a time-harmonic electric field linearly polarized parallel to the major axis of the ellipse. N-photon resonances with N=1-9 are studied as a function of e. All resonances with N{>=}3 are suppressed at certain e values in between 0 and 1. A similar system was analyzed by Yabuzaki et al. [Phys. Rev. A 10, 1955 (1974)] who found a simple pattern of suppressions that applies also for the present experiments. The results of these experimentally confirm that each time N is increased by two, an additional suppression is observed.

Waheed, A. [Department of Physics and Technology, University of Bergen, N-5007 Bergen (Norway); Higher Education Commission of Pakistan, Islamabad (Pakistan); Fregenal, D. [Centro Atomico Bariloche and Consejo Nacional de Investigaciones Cienticas y Tecnicas. R8402AGP S.C. de Bariloche (Argentina); Frette, O.; Foerre, M.; Hjertaker, B. T.; Preclikova, J. [Department of Physics and Technology, University of Bergen, N-5007 Bergen (Norway); Horsdal, E. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Pilskog, I. [Department of Physics and Technology, University of Bergen, N-5007 Bergen (Norway); Laboratoire de Chimie Physique Matiere et Rayonnement, Universite Pierre et Marie Curie, Centre National de la Recherche Scientifique, UMR 7614, 75231 Paris Cedex 05 (France)

2011-06-15T23:59:59.000Z

69

Kalman filtering to suppress spurious signals in Adaptive Optics control  

SciTech Connect

In many scenarios, an Adaptive Optics (AO) control system operates in the presence of temporally non-white noise. We use a Kalman filter with a state space formulation that allows suppression of this colored noise, hence improving residual error over the case where the noise is assumed to be white. We demonstrate the effectiveness of this new filter in the case of the estimated Gemini Planet Imager tip-tilt environment, where there are both common-path and non-common path vibrations. We discuss how this same framework can also be used to suppress spatial aliasing during predictive wavefront control assuming frozen flow in a low-order AO system without a spatially filtered wavefront sensor, and present experimental measurements from Altair that clearly reveal these aliased components.

Poyneer, L; Veran, J P

2010-03-29T23:59:59.000Z

70

Suppression of decoherence effects in the quantum kicked rotor  

E-Print Network (OSTI)

We describe a method allowing transient suppression of decoherence effects on the atom-optics realization of the kicked rotor. The system is prepared in an initial state with a momentum distribution concentrated in an interval much sharper than the Brillouin zone; the measure of the momentum distribution is restricted to this interval of quasimomenta: As most of the atoms undergoing decoherence processes fall outside this detection range and thus are not detected, the measured signal is effectively decoherence-free.

Maxence Lepers; Véronique Zehnlé; Jean Claude Garreau

2010-04-15T23:59:59.000Z

71

Quantifying Precipitation Suppression Due to Air Pollution  

Science Conference Proceedings (OSTI)

Urban air pollution and industrial air pollution have been shown qualitatively to suppress rain and snow. Here, precipitation losses over topographical barriers downwind of major coastal urban areas in California and in the land of Israel that ...

Amir Givati; Daniel Rosenfeld

2004-07-01T23:59:59.000Z

72

METHOD OF SUPPRESSING GASTROINTESTINAL UREASE ACTIVITY  

DOE Patents (OSTI)

This patent shows a method of increasing the growth rate of chicks. Certain diacyl substituted ureas such as alloxan, murexide, and barbituric acid are added to their feed, thereby suppressing gastrointestinal urease activity and thus promoting growth. (AEC)

Visek, W.J.

1963-04-23T23:59:59.000Z

73

Canonical suppression in microscopic transport models  

E-Print Network (OSTI)

We demonstrate the occurrence of canonical suppression associated with the conservation of an U(1)-charge in current transport models. For this study a pion gas is simulated within two different transport approaches by incorporating inelastic and volume-limited collisions $\\pi\\pi\\leftrightarrow K\\bar{K}$ for the production of kaon pairs. Both descriptions can dynamically account for the suppression in the yields of rare strange particles in a limited box, being in full accordance with a canonical statistical description.

O. Fochler; S. Vogel; M. Bleicher; C. Greiner; P. Koch-Steinheimer; Z. Xu

2006-01-20T23:59:59.000Z

74

Endotoxin suppresses surfactant synthesis in cultured rat lung cells  

Science Conference Proceedings (OSTI)

Pulmonary complications secondary to postburn sepsis are a major cause of death in burned patients. Using an in vitro organotypic culture system, we examined the effect of E. coli endotoxin (LPS) on lung cell surfactant synthesis. Our results showed that E. coli endotoxin (1.0, 2.5, 10 micrograms LPS/ml) was capable of suppressing the incorporation of /sup 3/H-choline into de novo synthesized surfactant, lamellar bodies (LB), and common myelin figures (CMF) at 50%, 68%, and 64%, respectively. In a similar study, we were able to show that LPS also inhibited /sup 3/H-palmitate incorporation by cultured lung cells. LPS-induced suppression of surfactant synthesis was reversed by hydrocortisone. Our results suggest that LPS may play a significant role in reducing surfactant synthesis by rat lung cells, and thus contribute to the pathogenesis of sepsis-related respiratory distress syndrome (RDS) in burn injury.

Li, J.J.; Sanders, R.L.; McAdam, K.P.; Gelfand, J.A.; Burke, J.F.

1989-02-01T23:59:59.000Z

75

Unconditional quantum-noise suppression via measurement-based quantum feedback  

E-Print Network (OSTI)

We demonstrate unconditional quantum-noise suppression in a collective spin system via feedback control based on quantum non-demolition measurement (QNDM). We perform shot-noise limited collective spin measurements on an ensemble of $3.7\\times 10^5$ laser-cooled 171Yb atoms in their spin-1/2 ground states. Correlation between two sequential QNDMs indicates $-0.80^{+0.11}_{-0.12}\\,\\mathrm{dB}$ quantum noise suppression in a conditional manner. Our feedback control successfully converts the conditional quantum-noise suppression into the unconditional one without significant loss of the noise

Ryotaro Inoue; Shin-Ichi-Ro Tanaka; Ryo Namiki; Takahiro Sagawa; Yoshiro Takahashi

2013-01-06T23:59:59.000Z

76

Multi-band OFDM UWB receiver with narrowband interference suppression  

E-Print Network (OSTI)

A multi band orthogonal frequency division multiplexing (MB-OFDM) compatible ultra wideband (UWB) receiver with narrowband interference (NBI) suppression capability is presented. The average transmit power of UWB system is limited to -41.3 dBm/MHz in order to not interfere existing narrowband systems. Moreover, it must operate even in the presence of unintentional radiation of FCC Class-B compatible devices. If this unintentional radiation resides in the UWB band, it can jam the communication. Since removing the interference in digital domain requires higher dynamic range of analog front-end than removing it in analog domain, a programmable analog notch filter is used to relax the receiver requirements in the presence of NBI. The baseband filter is placed before the variable gain amplifier (VGA) in order to reduce the signal swing at the VGA input. The frequency hopping period of MB-OFDM puts a lower limit on the settling time of the filter, which is inverse proportional to notch bandwidth. However, notch bandwidth should be low enough not to attenuate the adjacent OFDM tones. Since these requirements are contradictory, optimization is needed to maximize overall performance. Two different NBI suppression schemes are tested. In the first scheme, the notch filter is operating for all sub-bands. In the second scheme, the notch filter is turned on during the sub-band affected by NBI. Simulation results indicate that the UWB system with the first and the second suppression schemes can handle up to 6 dB and 14 dB more NBI power, respectively. The results of this work are not limited to MB-OFDM UWB system, and can be applied to other frequency hopping systems.

Kelleci, Burak

2007-12-01T23:59:59.000Z

77

A NOVEL DEVICE FOR DISSEMINATING FIRE ...  

Science Conference Proceedings (OSTI)

... streaming agent. For it to work effectively, the location of the fire must be known ahead of time in order to orient the system Halon ...

2011-10-20T23:59:59.000Z

78

NASA's APPROACH TO HALON ISSUES (407) 867-4454  

Science Conference Proceedings (OSTI)

... the northern polar region caused by energetic protons released from the Sun during intense solar flares. Instruments to ...

2011-11-03T23:59:59.000Z

79

EVALUATION OF SOME HALON SUBSTITUTE AGENTS IN A ...  

Science Conference Proceedings (OSTI)

... engine simulator is essentially a wind tunnel and ... Simmons.' The purpose of this design is to ... fire pan section, scrubbing tower, agent dispensing ...

2011-09-27T23:59:59.000Z

80

Final Technical Report Fires Experienced and Halon 1301 ...  

Science Conference Proceedings (OSTI)

... vehicle and unless the vehicle can drive away or ... also monitored during certain gas generator tests. ... related losses were classified as direct fires and ...

2012-08-22T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

SUPPRESSION OF ENERGETIC ELECTRON TRANSPORT IN FLARES BY DOUBLE LAYERS  

SciTech Connect

During flares and coronal mass ejections, energetic electrons from coronal sources typically have very long lifetimes compared to the transit times across the systems, suggesting confinement in the source region. Particle-in-cell simulations are carried out to explore the mechanisms of energetic electron transport from the corona to the chromosphere and possible confinement. We set up an initial system of pre-accelerated hot electrons in contact with ambient cold electrons along the local magnetic field and let it evolve over time. Suppression of transport by a nonlinear, highly localized electrostatic electric field (in the form of a double layer) is observed after a short phase of free-streaming by hot electrons. The double layer (DL) emerges at the contact of the two electron populations. It is driven by an ion-electron streaming instability due to the drift of the back-streaming return current electrons interacting with the ions. The DL grows over time and supports a significant drop in temperature and hence reduces heat flux between the two regions that is sustained for the duration of the simulation. This study shows that transport suppression begins when the energetic electrons start to propagate away from a coronal acceleration site. It also implies confinement of energetic electrons with kinetic energies less than the electrostatic energy of the DL for the DL lifetime, which is much longer than the electron transit time through the source region.

Li, T. C.; Drake, J. F.; Swisdak, M. [Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742 (United States)

2012-09-20T23:59:59.000Z

82

Stratospheric ozone protection: The Montreal Protocol and Title VI of the Clean Air Act Amendments of 1990  

Science Conference Proceedings (OSTI)

The stratospheric ozone layer protects the surface of the Earth from harmful ultraviolet (UV-B) radiation, which has been causally linked to skin cancer and cataracts, suppression of the human immune system, damage to crops and aquatic organisms, the formation of ground-level zone and the rapid weathering of outdoor plastics. In recent years, scientists have observed a significant deterioration of the ozone layer, particularly over the poles, but increasingly over populated regions as well. This deterioration has been attributed to the atmospheric release of certain man-made halocarbons, including chlorofluorocarbons (CFCs), halons, methyl chloroform and carbon tetrachloride. Once used extensively as propellants for aerosol sprays (but generally banned for such purposes since 1978), CFCs are widely used today as refrigerants, foams and solvents. All of these chlorinated (CFC, methyl chloroform and carbon tetrachloride) and brominated (halon) compounds are classified for regulatory purposes as Class I substances because of their significant ozone-depleting potential. Hydrochlorofluorocarbons (HCFCs), developed as alternatives to CFCs and halons for many different applications, have been classified for regulatory purposes as Class II substances because of their relatively less destructive impact on stratospheric ozone. This paper describes the following regulations to reduce destruction of the ozone layer: the Montreal Protocol; Title VI of the Clean air Act Amendments of 1990; Accelerated Phase-out schedules developed by the countries which signed the Montreal Protocol; Use restrictions; Recycling and Emission reduction requirements; Servicing of motor vehicle air conditions; ban on nonessential products; labeling requirements; safe alternatives. 6 refs.

Babst, C.R. III

1993-08-01T23:59:59.000Z

83

Suppressed $B_s$ decays at CDF  

SciTech Connect

We review three recent results of the CDF collaboration on B{sub s}{sup 0} suppressed decays: the first search for CP-violation in the B{sub s}{sup 0} {yields} {phi}{phi} decay, where two CP-violating asymmetries expected to be zero in the Standard Model are measured, and the observation and the branching ratio measurements of B{sub s}{sup 0} {yields} J/{Psi} f{sub 0}(980) and B{sub s}{sup 0} {yields} J/{Psi} K{sup (*)} decays.

Dorigo, Mirco

2011-05-01T23:59:59.000Z

84

Efficient hybrid shunt active power filter for improvement of power factor and harmonic suppression using MATLAB  

Science Conference Proceedings (OSTI)

Power quality management is the main problem that the industry is facing today. This is mainly affected by the generation of harmonics. The growing use of electronic equipment produces a large amount of harmonics in distribution systems because of non-sinusoidal ... Keywords: MATLAB 7.6, harmonic suppression, hybrid filter, power quality, shunt active power filter, total harmonic distortion

Jarupula Somlal

2011-03-01T23:59:59.000Z

85

SEY_suppression_ELCOUD04.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

5 5 SLAC-TN-04-045 June 2004 Abstract This note documents a set of expressions used to explore the issue of whether or not it is reasonable to consider a conventional positron source for a Tesla formatted beam. The critical issue is that of energy deposition in the conversion target and the comparison of the induced stress with the ultimate tensile strength of the target material. Since the length of the incident beam pulse is large in comparison to the ratio of beam size to the speed of sound, the concurrent pressure pulse dissipates in a time short compared to the overall pulse duration and one is left with only the Suppression of the Effective Secondary Emission Yield for a Grooved Metal Surface G. Stupakov and M. Pivi

86

Pulse compression and prepulse suppression apparatus  

DOE Patents (OSTI)

A pulse compression and prepulse suppression apparatus (10) for time compressing the output of a laser (14). A pump pulse (46) is separated from a seed pulse (48) by a first polarized beam splitter (20) according to the orientation of a half wave plate (18). The seed pulse (48) is directed into an SBS oscillator (44) by two plane mirrors (22, 26) and a corner mirror (24), the corner mirror (24) being movable to adjust timing. The pump pulse (46) is directed into an SBS amplifier 34 wherein SBS occurs. The seed pulse (48), having been propagated from the SBS oscillator (44), is then directed through the SBS amplifier (34) wherein it sweeps the energy of the pump pulse (46) out of the SBS amplifier (34) and is simultaneously compressed, and the time compressed pump pulse (46) is emitted as a pulse output (52). A second polarized beam splitter (38) directs any undepleted pump pulse 58 away from the SBS oscillator (44).

Dane, C.B.; Hackel, L.A.; George, E.V.; Miller, J.L.; Krupke, W.F.

1993-11-09T23:59:59.000Z

87

Suppression of a Nonpremixed Flame Stabilized by a ...  

Science Conference Proceedings (OSTI)

... Effects of Clutter on Performance of Fire Suppression Agents in Aircraft DIY Bays and Engine Nacelles, Report prepared for Booz, Allen and ...

2011-07-05T23:59:59.000Z

88

A spray-suppression model for turbulent combustion  

SciTech Connect

A spray-suppression model that captures the effects of liquid suppressant on a turbulent combusting flow is developed and applied to a turbulent diffusion flame with water spray suppression. The spray submodel is based on a stochastic separated flow approach that accounts for the transport and evaporation of liquid droplets. Flame extinguishment is accounted for by using a perfectly stirred reactor (PSR) submodel of turbulent combustion. PSR pre-calculations of flame extinction times are determined using CHEMKIN and are compared to local turbulent time scales of the flow to determine if local flame extinguishment has occurred. The PSR flame extinguishment and spray submodels are incorporated into Sandia's flow fire simulation code, VULCAN, and cases are run for the water spray suppression studies of McCaffrey for turbulent hydrogen-air jet diffusion flames. Predictions of flame temperature decrease and suppression efficiency are compared to experimental data as a function of water mass loading using three assumed values of drop sizes. The results show that the suppression efficiency is highly dependent on the initial droplet size for a given mass loading. A predicted optimal suppression efficiency was observed for the smallest class of droplets while the larger drops show increasing suppression efficiency with increasing mass loading for the range of mass loadings considered. Qualitative agreement to the experiment of suppression efficiency is encouraging, however quantitative agreement is limited due to the uncertainties in the boundary conditions of the experimental data for the water spray.

DESJARDIN,PAUL E.; TIESZEN,SHELDON R.; GRITZO,LOUIS A.

2000-02-14T23:59:59.000Z

89

A spray-suppression model for turbulent combustion  

DOE Green Energy (OSTI)

A spray-suppression model that captures the effects of liquid suppressant on a turbulent combusting flow is developed and applied to a turbulent diffusion flame with water spray suppression. The spray submodel is based on a stochastic separated flow approach that accounts for the transport and evaporation of liquid droplets. Flame extinguishment is accounted for by using a perfectly stirred reactor (PSR) submodel of turbulent combustion. PSR pre-calculations of flame extinction times are determined using CHEMKIN and are compared to local turbulent time scales of the flow to determine if local flame extinguishment has occurred. The PSR flame extinguishment and spray submodels are incorporated into Sandia's flow fire simulation code, VULCAN, and cases are run for the water spray suppression studies of McCaffrey for turbulent hydrogen-air jet diffusion flames. Predictions of flame temperature decrease and suppression efficiency are compared to experimental data as a function of water mass loading using three assumed values of drop sizes. The results show that the suppression efficiency is highly dependent on the initial droplet size for a given mass loading. A predicted optimal suppression efficiency was observed for the smallest class of droplets while the larger drops show increasing suppression efficiency with increasing mass loading for the range of mass loadings considered. Qualitative agreement to the experiment of suppression efficiency is encouraging, however quantitative agreement is limited due to the uncertainties in the boundary conditions of the experimental data for the water spray.

DESJARDIN,PAUL E.; TIESZEN,SHELDON R.; GRITZO,LOUIS A.

2000-02-14T23:59:59.000Z

90

Biological and cultural controls . . . Nonpesticide alternatives can suppress crop pests  

E-Print Network (OSTI)

alternatives can suppress crop pests Nicholas J. Mills Kentsuppression of major arthropod crop pests in California. Wevines, and ?eld and row crops. For example, a historic suc-

Mills, Nicholas J.; Daane, Kent M.

2005-01-01T23:59:59.000Z

91

Fire Suppression System Performance of Alternative Agents in ...  

Science Conference Proceedings (OSTI)

... development on nacelle fire protection followed, Klein (1950a) reported the results of the Jet Engine Fire Protection Program of the US Air Force. ...

1996-08-14T23:59:59.000Z

92

A collaborative botnets suppression system based on overlay network  

Science Conference Proceedings (OSTI)

Botnets are extremely versatile programs used in many network attacks, such as sending large volumes of spam or launching Distributed Denial-of-Service DDoS attacks. Botnets can switch command-and-control servers automatically, which makes completely ...

Fuye Han; Zhen Chen; HongFeng Xu; Haopei Wang; Yong Liang

2012-04-01T23:59:59.000Z

93

Sidelobe Suppression for Robust Beamformer Via the Mixed Norm Constraint  

Science Conference Proceedings (OSTI)

Applying a sparse constraint on the beam pattern has been suggested to suppress the sidelobe of the minimum variance distortionless response (MVDR) beamformer recently. To further improve the performance, we add a mixed norm constraint on the beam pattern. ... Keywords: Mixed norm constraint, Robust beamforming, Sidelobe suppression, Sparse constraint

Yipeng Liu; Qun Wan

2012-08-01T23:59:59.000Z

94

1. Introduction 2. Fire suppression mechanisms  

Science Conference Proceedings (OSTI)

... may be similar to an outdoor fire, except for wind influence. b ... to installation of a water mist system in the turbine hoods of the offshore platforms of ...

2011-10-27T23:59:59.000Z

95

Surge voltage suppression in residential power circuits  

Science Conference Proceedings (OSTI)

... Tran- sients in Low Voltage Supply Systems,'' The ... a high-voltage transformer for an oil furnace ... of service entrance SPD of 1960-1970 vintage were ...

2013-05-17T23:59:59.000Z

96

'Catch and Suppress' Control of Instabilities in High Performance  

NLE Websites -- All DOE Office Websites (Extended Search)

'Catch and Suppress' Control of Instabilities in High Performance 'Catch and Suppress' Control of Instabilities in High Performance Fusion Plasmas Fusion Energy Sciences (FES) FES Home About Research Facilities Science Highlights Benefits of FES Funding Opportunities Fusion Energy Sciences Advisory Committee (FESAC) News & Resources Contact Information Fusion Energy Sciences U.S. Department of Energy SC-24/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-4941 F: (301) 903-8584 E: sc.fes@science.doe.gov More Information » October 2012 'Catch and Suppress' Control of Instabilities in High Performance Fusion Plasmas Real time steering of microwave beams is used to suppress deleterious modes on DIII-D. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of General Atomics

97

Estimating Suppression of Eddy Mixing by Mean Flows  

Science Conference Proceedings (OSTI)

Particle- and tracer-based estimates of lateral diffusivities are used to estimate the suppression of eddy mixing across strong currents. Particles and tracers are advected using a velocity field derived from sea surface height measurements from ...

Andreas Klocker; Raffaele Ferrari; Joseph H. LaCasce

2012-09-01T23:59:59.000Z

98

Nuclear Suppression of Dileptons at Large xF  

E-Print Network (OSTI)

We study a significant nuclear suppression of the relative production rates (p(d)+A)/(p+d(p)) for the Drell-Yan process at large Feynman xF. Since this is the region of minimal values for the light-front momentum fraction variable x2 in the target nucleus, it is tempting to interpret this as a manifestation of coherence or of a Color Glass Condensate. We demonstrate, however, that this suppression mechanism is governed by the energy conservation restrictions in multiple parton rescatterings in nuclear matter. To eliminate nuclear shadowing effects coming from the coherence, we calculate nuclear suppression in the light-cone dipole approach at large dilepton masses and at energy accessible at FNAL. Our calculations are in a good agreement with data from the E772 experiment. Using the same mechanism we predict also nuclear suppression at forward rapidities in the RHIC energy range.

J. Cepila; J. Nemchik

2009-09-23T23:59:59.000Z

99

Efficiency of background suppression for arterial spin labeling  

E-Print Network (OSTI)

Arterial spin labeling (ASL), a technique developed for the measurement of local tissue perfusion with MRI, is heavily dependent on distinguishing irrelevant static tissue signal from the labeled blood. Background suppression ...

Garcia, Dairon, 1980-

2005-01-01T23:59:59.000Z

100

CMB quadrupole suppression. II. The early fast roll stage  

Science Conference Proceedings (OSTI)

Within the effective field theory of inflation, an initialization of the classical dynamics of the inflaton with approximate equipartition between the kinetic and potential energy of the inflaton leads to a brief fast roll stage that precedes the slow roll regime. The fast roll stage leads to an attractive potential in the wave equations for the mode functions of curvature and tensor perturbations. The evolution of the inflationary perturbations is equivalent to the scattering by this potential and a useful dictionary between the scattering data and observables is established. Implementing methods from scattering theory we prove that this attractive potential leads to a suppression of the quadrupole moment for CMB and B-mode angular power spectra. The scale of the potential is determined by the Hubble parameter during slow roll. Within the effective field theory of inflation at the grand unification (GUT) energy scale we find that if inflation lasts a total number of e-folds N{sub tot}{approx}59, there is a 10%-20% suppression of the CMB quadrupole and about 2%-4% suppression of the tensor quadrupole. The suppression of higher multipoles is smaller, falling off as 1/l{sup 2}. The suppression is much smaller for N{sub tot}>59, therefore if the observable suppression originates in the fast roll stage, there is the upper bound N{sub tot}{approx}59.

Boyanovsky, D.; Vega, H. J. de [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); Observatoire de Paris, LERMA, Laboratoire Associe au CNRS UMR 8112, 61, Avenue de l'Observatoire, 75014 Paris (France); LPTHE, Universite Pierre et Marie Curie (Paris VI) et Denis Diderot (Paris VII), Laboratoire Associe au CNRS UMR 7589, Tour 24, 5eme. etage, 4, Place Jussieu, 75252 Paris, Cedex 05 (France); Sanchez, N. G. [Observatoire de Paris, LERMA, Laboratoire Associe au CNRS UMR 8112, 61, Avenue de l'Observatoire, 75014 Paris (France)

2006-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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101

Reversible Electron Beam Heating for Suppression of Microbunching Instabilities at Free-Electron Lasers  

SciTech Connect

The presence of microbunching instabilities due to the compression of high-brightness electron beams at existing and future x-ray free-electron lasers (FELs) results in restrictions on the attainable lasing performance and renders beam imaging with optical transition radiation impossible. The instability can be suppressed by introducing additional energy spread, i.e., heating the electron beam, as demonstrated by the successful operation of the laser heater system at the Linac Coherent Light Source. The increased energy spread is typically tolerable for self-amplified spontaneous emission FELs but limits the effectiveness of advanced FEL schemes such as seeding. In this paper, we present a reversible electron beam heating system based on two transverse deflecting radio-frequency structures (TDSs) upstream and downstream of a magnetic bunch compressor chicane. The additional energy spread is introduced in the first TDS, which suppresses the microbunching instability, and then is eliminated in the second TDS. We show the feasibility of the microbunching gain suppression based on calculations and simulations including the effects of coherent synchrotron radiation. Acceptable electron beam and radio-frequency jitter are identified, and inherent options for diagnostics and on-line monitoring of the electron beam's longitudinal phase space are discussed.

Behrens, Christopher; /DESY; Huang, Zhirong; Xiang, Dao; /SLAC

2012-05-30T23:59:59.000Z

102

Inhomogeneous dynamic nuclear polarization and suppression of electron-polarization decay in a quantum dot  

E-Print Network (OSTI)

We investigate the dynamic nuclear polarization process by frequently injecting polarized electron spins into a quantum dot. Due to the suppression of the direct dipolar and indirect electron-mediated nuclear spin interactions, by the frequently injected electron spins, the analytical predictions under the independent spin approximation agree well with quantum numerical simulations. Our results show that the acquired nuclear polarization is highly inhomogeneous, proportional to the square of the local electron-nuclear hyperfine interaction constant, if the injection frequency is high. Utilizing the inhomogeneously polarized nuclear spins as an initial state, we further show that the electron-polarization decay time can be extended 100 times even at a relatively low nuclear polarization (<20%), without much suppression of the fluctuation of the Overhauser field. Our results lay the foundation for future investigations of the effect of DNP in more complex spin systems, such as double quantum dots and nitrogen vacancy centers in diamonds.

Na Wu; Wenkui Ding; Anqi Shi; Wenxian Zhang

2013-03-04T23:59:59.000Z

103

COMPLETE SUPPRESSION OF THE M=2/N-1 NEOCLASSICAL TEARING MODE USING ELECTRON CYCLOTRON CURRENT DRIVE ON DIII-D  

SciTech Connect

A271 COMPLETE SUPPRESSION OF THE M=2/N-1 NEOCLASSICAL TEARING MODE USING ELECTRON CYCLOTRON CURRENT DRIVE ON DIII-D. The first suppression of the important and deleterious m=2/n=1 neoclassical tearing mode (NTM) is reported using electron cyclotron current drive (ECCD) to replace the ''missing'' bootstrap current in the island O-point. Experiments on the DIII-D tokamak verify the maximum shrinkage of the m=2/n=1 island occurs when the ECCD location coincides with the q = 2 surface. The DIII-D plasma control system is put into search and suppress mode to make small changes in the toroidal field to find and lock onto the optimum position, based on real time measurements of dB{sub {theta}}/dt, for complete m=2/n=1 NTM suppression by ECCD. The requirements on the ECCD for complete island suppression are well modeled by the modified Rutherford equation for the DIII-D plasma conditions.

PETTY,CC; LAHAYE,LA; LUCE,TC; HUMPHREYS,DA; HYATT,AW; PRATER,R; STRAIT,EJ; WADE,MR

2003-03-01T23:59:59.000Z

104

Calculation of Fire Severity Factors and Fire Non-Suppression Probabilities For A DOE Facility Fire PRA  

Science Conference Proceedings (OSTI)

Over a 12 month period, a fire PRA was developed for a DOE facility using the NUREG/CR-6850 EPRI/NRC fire PRA methodology. The fire PRA modeling included calculation of fire severity factors (SFs) and fire non-suppression probabilities (PNS) for each safe shutdown (SSD) component considered in the fire PRA model. The SFs were developed by performing detailed fire modeling through a combination of CFAST fire zone model calculations and Latin Hypercube Sampling (LHS). Component damage times and automatic fire suppression system actuation times calculated in the CFAST LHS analyses were then input to a time-dependent model of fire non-suppression probability. The fire non-suppression probability model is based on the modeling approach outlined in NUREG/CR-6850 and is supplemented with plant specific data. This paper presents the methodology used in the DOE facility fire PRA for modeling fire-induced SSD component failures and includes discussions of modeling techniques for: • Development of time-dependent fire heat release rate profiles (required as input to CFAST), • Calculation of fire severity factors based on CFAST detailed fire modeling, and • Calculation of fire non-suppression probabilities.

Tom Elicson; Bentley Harwood; Jim Bouchard; Heather Lucek

2011-03-01T23:59:59.000Z

105

Experience with IBS-suppression lattice in RHIC  

SciTech Connect

An intra-beam scattering (IBS) is the limiting factor of the luminosity lifetime for RHIC operating with heavy ions. In order to suppress the IBS we designed and implemented new lattice with higher betatron tunes. This lattice had been developed during last three years and had been used for gold ions in yellow ring of the RHIC during d-Au part of the RHIC Run-8. The use of this lattice allowed both significant increases in the luminosity lifetime and the luminosity levels via reduction of beta-stars in the IPS. In this paper we report on the development, the tests and the performance of IBS-suppression lattice in RHIC, including the resulting increases in the peak and the average luminosity. We also report on our plans for future steps with the IBS suppression.

Litvinenko,V.N.; Luo, Y.; Ptitsyn, V.; Satogata, T.; Tepikian, S.; Bai, M.; Bruno, D.; Cameron, P.; Connolly, R.; Della Penna, A.; Drees, A.; Fedotov, A.; Ganetis, G.; Hoff, L.; Louie, W.; Malitsky, N.; Marr, G.; Marusic, A.; Montag, C.; Pilat, F.; Roser, T.; Trbojevic, D.; Tsoupas, N.

2008-06-23T23:59:59.000Z

106

Rotational suppression of the Tayler instability in stellar radiation zones  

E-Print Network (OSTI)

The study of the magnetic field in stellar radiation zones is an important topic in modern astrophysics because the magnetic field can play an important role in several transport phenomena such as mixing and angular momentum transport. We consider the influence of rotation on stability of a predominantly toroidal magnetic field in the radiation zone. We find that the effect of rotation on the stability depends on the magnetic configuration of the basic state. If the toroidal field increases sufficiently rapidly with the spherical radius, the instability cannot be suppressed entirely even by a very fast rotation although the strength of the instability can be significantly reduced. On the other hand, if the field increases slowly enough with the radius or decreases, the instability has a threshold and can be completely suppressed in rapidly rotating stars. We find that in the regions where the instability is entirely suppressed a particular type of magnetohydrodynamic waves may exist which are marginally stabl...

Bonanno, Alfio

2013-01-01T23:59:59.000Z

107

Ion energy recovery experiment based on magnetic electro suppression  

DOE Green Energy (OSTI)

A proof-of-principle experiment on direct recovery of residual hydrogen ions based on a magnetic electron suppression scheme is described. Ions extracted from a source plasma a few kilovolts above the ground potential (approx. 20 A) are accelerated to 40 keV by a negative potential maintained on a neutralizer gas cell. As the residual ions exit the gas cell, they are deflected from the neutral beam by a magnetic field that also suppresses gas cell electrons and then recovered on a ground-potential surface. Under optimum conditions, a recovery efficiency (the ratio of the net recovered current to the available full-energy ion current) of 80% +- 20% has been obtained. Magnetic suppression of the beam plasma electrons was rather easily achieved; however, handling the fractional-energy ions originating from molecular species (H/sub 2//sup +/ and H/sub 3//sup +/) proved to be extremely important to recovery efficiency.

Kim, J.; Stirling, W.L.; Dagenhart, W.K.; Barber, G.C.; Ponte, N.S.

1980-05-01T23:59:59.000Z

108

An alternative model of jet suppression at RHIC energies  

E-Print Network (OSTI)

We propose a simple Glauber-type mechanism for suppression of jet production up to transverse momenta of about 10 GeV/c at RHIC. For processes in this kinematic region, the formation time is smaller than the interval between two successive hard partonic collisions and the subsequent collision influences the jet production. Number of jets then roughly scales with the number of participants. Proportionality to the number of binary collisions is recovered for very high transverse momenta. The model predicts suppression of jet production in d+Au collisions at RHIC.

Roman Lietava; Jan Pisut; Neva Pisutova; Boris Tomasik

2003-01-16T23:59:59.000Z

109

Viscoelastic Suppression of Gravity-Driven Counterflow Instability  

E-Print Network (OSTI)

Attempts to achieve ``top kill'' of actively flowing oil wells by insertion of dense drilling ``muds'', i.e., slurries of dense minerals, from above will fail if the Kelvin-Helmholtz instability in the gravity-driven counterflow produces turbulence that breaks up the denser fluid into small droplets. Here we estimate the droplet size to be sub-mm for fast flows and suggest the addition of a shear-thickening polymer to suppress turbulence. Laboratory experiments show a progression from droplet formation to complete turbulence suppression at the relevant high velocities, illustrating rich new physics accessible by using a shear-thickening liquid in gravity driven counter-streaming flows.

Beiersdorfer, P; Layne, D; Magee, E W

2010-01-01T23:59:59.000Z

110

Evidence for the suppressed decay B^- -> DK^-, D -> K^+?^-?^0  

E-Print Network (OSTI)

We report a study of the suppressed decay B^- -> DK^-, D -> K^+\\pi^-\\pi^0, where D denotes either a D^0 or a \\bar{D}^0 meson. The decay is sensitive to the CP-violating parameter \\phi_3. Using a data sample of 772 x 10^6 B\\bar{B} pairs collected at the \\Upsilon(4S) resonance with the Belle detector, we measure the ratio of branching fractions of the above suppressed decay to the favored decay B^- -> DK^-, D -> K^-\\pi^+\\pi^0. Our result is R_{DK} = [1.98 +/- 0.62(stat.) +/- 0.24(syst.)] x 10^{-2}, which indicates the first evidence of the signal for this suppressed decay with a significance of 3.2 standard deviations. We measure the direct CP asymmetry between the suppressed B^- and B^+ decays to be A_{DK} = 0.41 +/- 0.30 (stat.) +/- 0.05 (syst.). We also report measurements for the analogous quantities R_{D\\pi} and A_{D\\pi} for the decay B^- -> D\\pi^-, D -> K^+\\pi^-\\pi^0.

Belle Collaboration; M. Nayak; J. Libby; K. Trabelsi; I. Adachi; H. Aihara; D. M. Asner; T. Aushev; A. M. Bakich; A. Bala; P. Behera; K. Belous; V. Bhardwaj; G. Bonvicini; A. Bozek; M. Bra?ko; T. E. Browder; D. ?ervenkov; M. -C. Chang; P. Chang; V. Chekelian; A. Chen; B. G. Cheon; R. Chistov; I. -S. Cho; K. Cho; V. Chobanova; Y. Choi; D. Cinabro; J. Dalseno; M. Danilov; Z. Doležal; Z. Drásal; D. Dutta; S. Eidelman; S. Esen; H. Farhat; J. E. Fast; T. Ferber; V. Gaur; N. Gabyshev; S. Ganguly; R. Gillard; Y. M. Goh; B. Golob; J. Haba; H. Hayashii; Y. Horii; Y. Hoshi; W. -S. Hou; H. J. Hyun; T. Iijima; A. Ishikawa; T. Iwashita; I. Jaegle; T. Julius; D. H. Kah; E. Kato; D. Y. Kim; H. J. Kim; J. B. Kim; M. J. Kim; Y. J. Kim; K. Kinoshita; J. Klucar; B. R. Ko; P. Kodyš; S. Korpar; P. Krishnan; P. Križan; P. Krokovny; T. Kuhr; T. Kumita; A. Kuzmin; Y. -J. Kwon; S. -H. Lee; J. Li; Y. Li; L. Li Gioi; Y. Liu; D. Liventsev; P. Lukin; H. Miyake; R. Mizuk; G. B. Mohanty; A. Moll; T. Mori; N. Muramatsu; R. Mussa; Y. Nagasaka; M. Nakao; E. Nedelkovska; K. Negishi; C. Ng; N. K. Nisar; O. Nitoh; S. Ogawa; S. Okuno; Y. Onuki; P. Pakhlov; G. Pakhlova; C. W. Park; H. Park; T. K. Pedlar; M. Petri?; L. E. Piilonen; M. Ritter; M. Röhrken; A. Rostomyan; H. Sahoo; T. Saito; Y. Sakai; S. Sandilya; L. Santelj; T. Sanuki; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; A. J. Schwartz; K. Senyo; O. Seon; M. E. Sevior; M. Shapkin; C. P. Shen; T. -A. Shibata; J. -G. Shiu; B. Shwartz; A. Sibidanov; F. Simon; Y. -S. Sohn; A. Sokolov; E. Solovieva; M. Stari?; M. Steder; Z. Suzuki; U. Tamponi; G. Tatishvili; Y. Teramoto; M. Uchida; T. Uglov; Y. Unno; S. Uno; P. Urquijo; S. E. Vahsen; C. Van Hulse; P. Vanhoefer; G. Varner; K. E. Varvell; M. N. Wagner; C. H. Wang; M. -Z. Wang; Y. Watanabe; K. M. Williams; E. Won; Y. Yamashita; S. Yashchenko; Y. Yusa; V. Zhilich; V. Zhulanov; A. Zupanc

2013-10-07T23:59:59.000Z

111

Surge Suppression of Protection Equipment in UHV Substation  

Science Conference Proceedings (OSTI)

This paper analyses the producing mechanism of surge at protection equipment's ports, surge test of high level is done for signal ports, communication ports and power ports of specific protection equipment sample. Evaluation is accomplished for the methods ... Keywords: protection equipment, substation, surge suppression

Ma Haijie

2009-10-01T23:59:59.000Z

112

Comments on “Does Air Pollution Really Suppress Precipitation in Israel?”  

Science Conference Proceedings (OSTI)

Alpert et al. in a recent paper challenged the quantification of the suppression of orographic precipitation that was shown in two recent papers by Givati and Rosenfeld to occur in Israel. Their main claim was that the results were determined by ...

Amir Givati; Daniel Rosenfeld

2009-08-01T23:59:59.000Z

113

Dynamic Resource Allocation in Disaster Response: Tradeoffs in Wildfire Suppression  

E-Print Network (OSTI)

Dynamic Resource Allocation in Disaster Response: Tradeoffs in Wildfire Suppression Nada Petrovic1: Petrovic N, Alderson DL, Carlson JM (2012) Dynamic Resource Allocation in Disaster Response: Tradeoffs with the allocation of limited resources to mitigate the impact of natural disasters inspire fundamentally new

Carlson, Jean

114

Suppression of decoherence-induced diffusion in the quantum kicked rotor  

Science Conference Proceedings (OSTI)

We describe a method that allows transient suppression of spontaneous emission-induced diffusion in the atom-optics realization of the kicked rotor. The system is prepared in an initial state with a momentum distribution concentrated in an interval much sharper than the Brillouin zone; the measure of the momentum distribution is restricted to this interval of quasimomenta. Because most of the atoms undergoing decoherence processes fall outside this detection range and thus are not detected, the measured signal is effectively free of decoherence-induced diffusion effects.

Lepers, Maxence; Zehnle, Veronique; Garreau, Jean Claude [Laboratoire de Physique des Lasers, Atomes et Molecules, Universite Lille 1 Sciences et Technologies, CNRS, F-59655 Villeneuve d'Ascq Cedex (France)

2010-06-15T23:59:59.000Z

115

Low Dose Suppression of Neoplastic Transformation in Vitro  

SciTech Connect

This grant was to study the low dose suppression of neoplastic transformation in vitro and the shape of the dose-response curve at low doses and dose-rates of ionizing radiation. Previous findings had indicated a suppression of transformation at dose <10cGy of low-LET radiation when delivered at high dose-rate. The present study indicates that such suppression extends out to doses in excess of 100cGy when the dose (from I-125 photons) is delivered at dose-rates as low as 0.2 mGy/min and out to in excess of {approx}25cGy the highest dose studied at the very low dose-rate of 0.5 mGy/day. We also examined dose-rate effects for high energy protons (which are a low-LET radiation) and suppression was evident below {approx}10cGy for high dose-rate delivery and at least out to 50cGy for low dose-rate (20cGy/h) delivery. Finally, we also examined the effect of low doses of 1 GeV/n iron ions (a high-LET radiation) delivered at high dose-rate on transformation at low doses and found a suppression below {approx}10cGy that could be attributable to an adaptive response in bystander cells induced by the associated low-LET delta rays. These results have implications for cancer risk assessment at low doses.

John Leslie Redpath

2012-05-01T23:59:59.000Z

116

MOLECULAR MECHANISM OF SUPPRESSION OF NEOPLASTIC TRANSFORMATION BY LOW DOSES OF LOW LET RADIATION  

Science Conference Proceedings (OSTI)

We are currently funded (9/01-8/04) by the DOE Low Dose Radiation Research Program to examine mechanisms underlying the suppression of neoplastic transformation in vitro by low doses of low LET radiation. For the new studies proposed under Notice 04-21, we intend to follow up on our observation that upregulation of DNA repair may be an important factor and that its importance is dose-dependent. The experimental system will be the human hybrid cell neoplastic transformation assay that we are currently using. We propose to test the following hypothesis: Down-regulation of DNA dsb repair will abrogate the low dose suppression of neoplastic transformation. Using the technique of RNA silencing, it is proposed to test the effect of down-regulation of the two major DNA dsb repair pathways, homologous recombination (HR) and non-homologous end-joining (NHEJ), on the dose response relationship for neoplastic transformation. Based on prior studies, we predict that this will result in abrogation of the suppressive effect at doses in the range 1 to 10 cGy, but not at lower doses. The proposed experiments will also help address the question as to which of the two DNA repair pathways may be the most important in causing suppression of transformation. HR is a pathway that is predominant in S and G2 phase cells and is known to be less error-prone than the NHEJ pathway that is predominant in G1 phase. We hypothesize that down-regulation of HR will result in the most effective abrogation of suppression. An important component of this study will be the determination of the how abrogation of DNA dsb repair impacts the spontaneous transformation frequency, presumably a consequence of endogeneous DNA damage. Experiments will be carried out using partially synchronized populations of cells enriched for G1 and S/G2 respectively. In addition to the endpoint of neoplastic transformation the impact of down-regulation of HR and NHEJ on the formation and disappearance of the DNA dsb marker, gamma-H2AX, will be studied.

J.LESIE REDPATH, PH.D.

2011-03-29T23:59:59.000Z

117

Style Guide for Word Users for the NIST Special Publication ...  

Science Conference Proceedings (OSTI)

... writing of this book, utilize halon 1211 for engine nacelle and ... example, is it necessary to design a fuel cell so that ... Fixed System (F) or Hand- Held (H ...

2011-12-27T23:59:59.000Z

118

The application of expansion foam on liquefied natural gas (LNG) to suppress LNG vapor and LNG pool fire thermal radiation  

E-Print Network (OSTI)

Liquefied Natural Gas (LNG) hazards include LNG flammable vapor dispersion and LNG pool fire thermal radiation. A large LNG pool fire emits high thermal radiation thus preventing fire fighters from approaching and extinguishing the fire. One of the strategies used in the LNG industry and recommended by federal regulation National Fire Protection Association (NFPA) 59A is to use expansion foam to suppress LNG vapors and to control LNG fire by reducing the fire size. In its application, expansion foam effectiveness heavily depends on application rate, generator location, and LNG containment pit design. Complicated phenomena involved and previous studies have not completely filled the gaps increases the needs for LNG field experiments involving expansion foam. In addition, alternative LNG vapor dispersion and pool fire suppression methodology, Foamglas® pool fire suppression (PFS), is investigated as well. This dissertation details the research and experiment development. Results regarding important phenomena are presented and discussed. Foamglas® PFS effectiveness is described. Recommendations for advancing current guidelines in LNG vapor dispersion and pool fire suppression methods are developed. The gaps are presented as the future work and recommendation on how to do the experiment better in the future. This will benefit LNG industries to enhance its safety system and to make LNG facilities safer.

Suardin, Jaffee Arizon

2008-08-01T23:59:59.000Z

119

Suppression MHD instabilities by IBW heating in HT-7 Tokamak  

E-Print Network (OSTI)

In HT-7 tokamak, the m= 2/1 tearing mode can be effectively suppressed by the ion bernstein wave (IBW) when the location of power deposition is near the q=2 rational surface. Off-axis electron heating and greatly increase of electron density was observed, in the meantime, the particle confinement appears to be improved with the increased of the central line averaged electron density and the drop of Da emission. Induced large ne gradients and pressures were spatially correlated with the IBW deposition profile by theoretical calculation >. It is suggested that off-axis IBW heating modifies the electron pressure profile, and so the current density profile could be redistributed resulting in the suppression of the magnetohydrodynamics (MHD) instability. It provides an integrated way for making combined effects on both the stabilization of tearing modes and controlling of pressure profile.

C. M. Qin; Y. P. Zhao; X. J. Zhang; P. Xu; Y. Yang; the HT-7 team

2010-01-20T23:59:59.000Z

120

Vector Higgs bosons and possible suppression of flavorchanging neutral current  

E-Print Network (OSTI)

We replace the scalar Higgs doublet with a vector Higgs boson doublet to the unified electroweak W-S model and find most of important features of W-S model are kept unchanged only the Higgs boson now become vector bosons. Lorentz invariance has been carefully discussed. The most important challenge is there will be three massless vector Higgs bosons. The remarkable effect is the possible suppression of the flavorchanging neutral current compare to the multi-Higgs model.

Xiao Yu Qian

2006-10-17T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Quantum Suppression of the Rayleigh Instability in Nanowires  

E-Print Network (OSTI)

A linear stability analysis of metallic nanowires is performed in the free-electron model using quantum chaos techniques. It is found that the classical instability of a long wire under surface tension can be completely suppressed by electronic shell effects, leading to stable cylindrical configurations whose electrical conductance is a magic number 1, 3, 5, 6,... times the quantum of conductance. Our results are quantitatively consistent with recent experiments with alkali metal nanowires.

F. Kassubek; C. A. Stafford; Hermann Grabert; Raymond E. Goldstein

2000-06-14T23:59:59.000Z

122

Suppression of heavy impurities in the ST Tokamak  

SciTech Connect

Two different discharges in the ST Tokamak are described: A discharge dominated by high-Z (iron) impurity (Case A), and one dominated by low-Z (oxygen) impurity (Case B). The oxygen-dominated discharge shows higher electron temperature and longer containment time than the iron-dominated discharge. Suppression of Fe and Mo impurities has been achieved by pulsing in air for a few hundred shots. (auth)

Meservey, E.; Bretz, N.; Dimock, D.; Hinnov, E.

1975-12-01T23:59:59.000Z

123

Suppression of shot noise and spontaneous radiation in electron beams  

Science Conference Proceedings (OSTI)

Shot noise in the electron beam distribution is the main source of noise in high-gain FEL amplifiers, which may affect applications ranging from single- and multi-stage HGHG FELs to an FEL amplifier for coherent electron cooling. This noise also imposes a fundamental limit of about 10{sup 6} on FEL gain, after which SASE FELs saturate. There are several advantages in strongly suppressing this shot noise in the electron beam, and the corresponding spontaneous radiation. For more than a half-century, a traditional passive method has been used successfully in practical low-energy microwave electronic devices to suppress shot noise. Recently, it was proposed for this purpose in FELs. However, being passive, the method has some significant limitations and is hardly suitable for the highly inhomogeneous beams of modern high-gain FELs. I present a novel active method of suppressing, by many orders-of-magnitude, the shot noise in relativistic electron beams. I give a theoretical description of the process, and detail its fundamental limitation.

Litvinenko,V.

2009-08-23T23:59:59.000Z

124

Simulation of Thermal Stratification in BWR Suppression Pools with One Dimensional Modeling Method  

Science Conference Proceedings (OSTI)

The suppression pool in a boiling water reactor (BWR) plant not only is the major heat sink within the containment system, but also provides the major emergency cooling water for the reactor core. In several accident scenarios, such as a loss-of-coolant accident and extended station blackout, thermal stratification tends to form in the pool after the initial rapid venting stage. Accurately predicting the pool stratification phenomenon is important because it affects the peak containment pressure; the pool temperature distribution also affects the NPSHa (available net positive suction head) and therefore the performance of the Emergency Core Cooling System and Reactor Core Isolation Cooling System pumps that draw cooling water back to the core. Current safety analysis codes use zero dimensional (0-D) lumped parameter models to calculate the energy and mass balance in the pool; therefore, they have large uncertainties in the prediction of scenarios in which stratification and mixing are important. While three-dimensional (3-D) computational fluid dynamics (CFD) methods can be used to analyze realistic 3-D configurations, these methods normally require very fine grid resolution to resolve thin substructures such as jets and wall boundaries, resulting in a long simulation time. For mixing in stably stratified large enclosures, the BMIX++ code (Berkeley mechanistic MIXing code in C++) has been developed to implement a highly efficient analysis method for stratification where the ambient fluid volume is represented by one-dimensional (1-D) transient partial differential equations and substructures (such as free or wall jets) are modeled with 1-D integral models. This allows very large reductions in computational effort compared to multi-dimensional CFD modeling. One heat-up experiment performed at the Finland POOLEX facility, which was designed to study phenomena relevant to Nordic design BWR suppression pool including thermal stratification and mixing, is used for validation. Comparisons between the BMIX++, GOTHIC, and CFD calculations against the POOLEX experimental data are discussed in detail.

Haihua Zhao; Ling Zou; Hongbin Zhang

2014-01-01T23:59:59.000Z

125

Effects of Vacuum Fluctuation Suppression on Atomic Decay Rates  

E-Print Network (OSTI)

The use of atomic decay rates as a probe of sub-vacuum phenomena will be studied. Because electromagnetic vacuum fluctuations are essential for radiative decay of excited atomic states, decay rates can serve as a measure of the suppression of vacuum fluctuation in non-classical states, such as squeezed vacuum states. In such states the renormalized expectation value of the square of the electric field or the energy density can be periodically negative, representing suppression of vacuum fluctuations. We explore the extent to which atomic decays can be used to measure the mean squared electric field or energy density. We consider a scheme in which atoms in an excited state transit a closed cavity whose lowest mode contains photons in a non-classical state. The change in the decay probability of the atom in the cavity due to the non-classical state can, under certain circumstances, serve as a measure of the mean squared electric field or energy density in the cavity. We derive a quantum inequality bound on the ...

Ford, L H

2009-01-01T23:59:59.000Z

126

Effects of Vacuum Fluctuation Suppression on Atomic Decay Rates  

E-Print Network (OSTI)

The use of atomic decay rates as a probe of sub-vacuum phenomena will be studied. Because electromagnetic vacuum fluctuations are essential for radiative decay of excited atomic states, decay rates can serve as a measure of the suppression of vacuum fluctuation in non-classical states, such as squeezed vacuum states. In such states the renormalized expectation value of the square of the electric field or the energy density can be periodically negative, representing suppression of vacuum fluctuations. We explore the extent to which atomic decays can be used to measure the mean squared electric field or energy density. We consider a scheme in which atoms in an excited state transit a closed cavity whose lowest mode contains photons in a non-classical state. The change in the decay probability of the atom in the cavity due to the non-classical state can, under certain circumstances, serve as a measure of the mean squared electric field or energy density in the cavity. We derive a quantum inequality bound on the decrease in this probability. We also show that the decrease in decay rate can sometimes be a measure of negative energy density or negative squared electric field. We make some estimates of the magnitude of this effect, which indicate that an experimental test might be possible.

L. H. Ford; Thomas A. Roman

2009-07-09T23:59:59.000Z

127

Synthesis of Difluoroethylene (C2H2F2) from Halon 1211 ...  

Science Conference Proceedings (OSTI)

... 0.3 s. The exhaust gases were passed ... factors estimated from published correlations for TCD ... in significantly reduced greenhouse gas emissions. ...

2011-10-11T23:59:59.000Z

128

Systems  

E-Print Network (OSTI)

Abstract Developing usable and robust mixed reality systems requires unique human–computer interaction techniques and customized hardware systems. The design of the hardware is directed by the requirements of the rich 3D interactions that can be performed using immersive mobile MR systems. Geometry modeling and capture, navigational annotations, visualizations, and training simulations are all enhanced using augmented computer graphics. We present the design guidelines that have led us through 10 years of evolving mobile outdoor MR hardware systems.

Benjamin Avery; Ross T. Smith; Wayne Piekarski; Bruce H. Thomas

2009-01-01T23:59:59.000Z

129

Novel technique of suppressing TBBU in high-energy ERLs  

Science Conference Proceedings (OSTI)

Energy recovery linacs (ERLs) are an emerging generation of accelerators that promise to revolutionize the fields of high-energy physics and photon sciences. These accelerators combine the advantages of linear accelerators with that of storage rings, and augur the delivery of electron beams of unprecedented power and quality. However, one potential weakness of these devices is transverse beam break-up instability that could severely limit the available beam current. In this paper, I propose a novel method of suppressing these dangerous effects using the chromaticity of the transverse motion. In this short paper I am able only to touch the surface of the method and a complete description of the method with all relevant derivations can be found in [1].

Litvinenko V.

2012-05-20T23:59:59.000Z

130

Electric field suppression of ultracold confined chemical rates  

E-Print Network (OSTI)

We consider ultracold collisions of polar molecules confined in a one dimensional optical lattice. Using a quantum scattering formalism and a frame transformation method, we calculate elastic and chemical quenching rate constants for fermionic molecules. Taking KRb molecules as a prototype, we find that the rate of quenching collisions is enhanced at zero electric field as the confinement is increased, but that this rate is suppressed when the electric field is turned on. For molecules with 500 nK of collision energy, for realistic molecular densities, and for achievable experimental electric fields and trap confinements, we predict lifetimes of KRb molecules of 1 s. We find a ratio of elastic to quenching collision rates of about 100, which may be sufficient to achieve efficient experimental evaporative cooling of polar KRb molecules.

Quéméner, Goulven

2010-01-01T23:59:59.000Z

131

Enhancement and suppression of heat transfer by MHD turbulence  

E-Print Network (OSTI)

We study of the effect of turbulence on heat transfer within magnetized plasmas for energy injection velocities both larger and smaller that the Alfven speed. We find that in the latter regime the heat transfer is partially suppressed, while in the former regime the effects of turbulence depend on the intensity of driving. In fact, the scale l at which the turbulent velocity is equal the Alfven velocity is a new important parameter. When the electron mean free path is larger than l, the stronger the the turbulence, the lower thermal conductivity by electrons is. The turbulent motions, however, induces their own advective heat transport, which, for the parameters of intracluster medium (ICM) provides effective heat diffusivity that exceeds the classical Spitzer value.

A. Lazarian

2006-08-02T23:59:59.000Z

132

SRAM leakage suppression by minimizing standby supply voltage  

E-Print Network (OSTI)

Suppressing the leakage current in memories is critical in low-power design. By reducing the standby supply voltage (VDD) to its limit, which is the Data Retention Voltage (DRV), leakage power can be substantially reduced. This paper explores how low DRV can be in a standard low leakage SRAM module and analyzes how DRV is affected by parameters such as process variations, chip temperature, and transistor sizing. An analytical model for DRV as a function of process and design parameters is presented, and forms the base for further design space explorations. This model is verified using simulations as well as measurements from a 4KB SRAM chip in a 0.13?m technology. It is demonstrated that an SRAM cell state can be preserved at sub-300mV standby V DD, with more than 90 % leakage power savings. 1.

Huifang Qin; Yu Cao; Dejan Markovic; Andrei Vladimirescu; Jan Rabaey

2004-01-01T23:59:59.000Z

133

Parameter selection for suppressed fuzzy c-means with an application to MRI segmentation  

Science Conference Proceedings (OSTI)

This paper presents an algorithm, called the modified suppressed fuzzy c-means (MS-FCM), that simultaneously performs clustering and parameter selection for the suppressed fuzzy c-means (S-FCM) algorithm proposed by [Fan, J.L., Zhen, W.Z., Xie, W.X., ... Keywords: Fuzzy c-means, Fuzzy clustering, Magnetic resonance image segmentation, Parameter selection, Suppressed fuzzy c-means

Wen-Liang Hung; Miin-Shen Yang; De-Hua Chen

2006-04-01T23:59:59.000Z

134

An efficient modeling method for thermal stratification simulation in a BWR suppression pool  

SciTech Connect

The suppression pool in a BWR plant not only is the major heat sink within the containment system, but also provides major emergency cooling water for the reactor core. In several accident scenarios, such as LOCA and extended station blackout, thermal stratification tends to form in the pool after the initial rapid venting stage. Accurately predicting the pool stratification phenomenon is important because it affects the peak containment pressure; and the pool temperature distribution also affects the NPSHa (Available Net Positive Suction Head) and therefore the performance of the pump which draws cooling water back to the core. Current safety analysis codes use 0-D lumped parameter methods to calculate the energy and mass balance in the pool and therefore have large uncertainty in prediction of scenarios in which stratification and mixing are important. While 3-D CFD methods can be used to analyze realistic 3D configurations, these methods normally require very fine grid resolution to resolve thin substructures such as jets and wall boundaries, therefore long simulation time. For mixing in stably stratified large enclosures, the BMIX++ code has been developed to implement a highly efficient analysis method for stratification where the ambient fluid volume is represented by 1-D transient partial differential equations and substructures such as free or wall jets are modeled with 1-D integral models. This allows very large reductions in computational effort compared to 3-D CFD modeling. The POOLEX experiments at Finland, which was designed to study phenomena relevant to Nordic design BWR suppression pool including thermal stratification and mixing, are used for validation. GOTHIC lumped parameter models are used to obtain boundary conditions for BMIX++ code and CFD simulations. Comparison between the BMIX++, GOTHIC, and CFD calculations against the POOLEX experimental data is discussed in detail.

Haihua Zhao; Ling Zou; Hongbin Zhang; Hua Li; Walter Villanueva; Pavel Kudinov

2012-09-01T23:59:59.000Z

135

Deployment: Inertion  

Science Conference Proceedings (OSTI)

... Halon 1301 Use in Oil and Gas Production Facilities ... Propane Inerting Concertrations of Two Halon Replacement Gases Blended With Nitrogen ...

2011-11-10T23:59:59.000Z

136

Context: Policy & Regulation  

Science Conference Proceedings (OSTI)

... Regulation of Halon and Halon Substitutes. ... Disparities in Environmental Regulations and Their Effect ... Impediments and Incentives for Incorporating ...

2011-11-17T23:59:59.000Z

137

NEW TOOLS FOR CELL SUPPRESSION IN TAU-ARGUS: ONE PIECE OF THE CASC PROJECT WORK DRAFT  

E-Print Network (OSTI)

In the course of the EU funded project CASC, the software t-ARGUS shall be extended to become a generally applicable standard tool for tabular data protection. The required modifications will affect the facilities provided for (residual) disclosure risk statement, the data structure and the user interface. Methods will have to be implemented for protection of complex hierarchical tables and for table-to-table protection, especially in the context of public use data-base query systems. Extensions will be made concerning secondary cell suppression methodology provided by the package. The package will interface in particular with the GHQUAR hypercube algorithm. Finally, table perturbation tools will be added.

Submitted By The; The Yugoslav; Republic Macedonia; English Only; Invited Paper

2001-01-01T23:59:59.000Z

138

Kalispel Non-Native Fish Suppression Project 2007 Annual Report.  

DOE Green Energy (OSTI)

Non-native salmonids are impacting native salmonid populations throughout the Pend Oreille Subbasin. Competition, hybridization, and predation by non-native fish have been identified as primary factors in the decline of some native bull trout (Salvelinus confluentus) and westslope cutthroat trout (Oncorhynchus clarki lewisi) populations. In 2007, the Kalispel Natural Resource Department (KNRD) initiated the Kalispel Nonnative Fish Suppression Project. The goal of this project is to implement actions to suppress or eradicate non-native fish in areas where native populations are declining or have been extirpated. These projects have previously been identified as critical to recovering native bull trout and westslope cutthroat trout (WCT). Lower Graham Creek was invaded by non-native rainbow (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis) after a small dam failed in 1991. By 2003, no genetically pure WCT remained in the lower 700 m of Graham Creek. Further invasion upstream is currently precluded by a relatively short section of steep, cascade-pool stepped channel section that will likely be breached in the near future. In 2008, a fish management structure (barrier) was constructed at the mouth of Graham Creek to preclude further invasion of non-native fish into Graham Creek. The construction of the barrier was preceded by intensive electrofishing in the lower 700 m to remove and relocate all captured fish. Westslope cutthroat trout have recently been extirpated in Cee Cee Ah Creek due to displacement by brook trout. We propose treating Cee Cee Ah Creek with a piscicide to eradicate brook trout. Once eradication is complete, cutthroat trout will be translocated from nearby watersheds. In 2004, the Washington Department of Fish and Wildlife (WDFW) proposed an antimycin treatment within the subbasin; the project encountered significant public opposition and was eventually abandoned. However, over the course of planning this 2004 project, little public involvement or education was conducted prior to the planned implementation. Therefore, in 2007 we implemented an extensive process to provide public education, address public concerns and provide opportunity for public involvement in implementing piscicides and other native fish recovery actions in the subbasin.

Wingert, Michele; Andersen, Todd [Kalispel Natural Resource Department

2008-11-18T23:59:59.000Z

139

Technical Note: Suppression of artifacts arising from simultaneous cone-beam imaging and RF transponder tracking in prostate radiotherapy  

SciTech Connect

Purpose: Artifacts in treatment-room cone-beam reconstructions have been observed at the authors' center when cone-beam acquisition is simultaneous with radio frequency (RF) transponder tracking using the Calypso 4D system (Calypso Medical, Seattle, WA). These artifacts manifest as CT-number modulations and increased CT-noise. The authors present a method for the suppression of the artifacts. Methods: The authors propose a three-stage postprocessing technique that can be applied to image volumes previously reconstructed by a cone-beam system. The stages are (1) segmentation of voxels into air, soft-tissue, and bone; (2) application of a 2D spatial-filter in the axial plane to the soft-tissue voxels; and (3) normalization to remove streaking along the axial-direction. The algorithm was tested on patient data acquired with Synergy XVI cone-beam CT systems (Elekta, Crawley, United Kingdom). Results: The computational demands of the suggested correction are small, taking less than 15 s per cone-beam reconstruction on a desktop PC. For a moderate loss of spatial-resolution, the artifacts are strongly suppressed and low-contrast visibility is improved. Conclusions: The correction technique proposed is fast and effective in removing the artifacts caused by simultaneous cone-beam imaging and RF-transponder tracking.

Poludniowski, Gavin; Webb, Steve; Evans, Philip M. [Joint Department of Physics, Division of Radiotherapy and Imaging, Institute of Cancer Research and Royal Marsden NHS Foundation Trust, Downs Road, Sutton, Surrey, SM2 5PT (United Kingdom)

2012-03-15T23:59:59.000Z

140

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

41 - 6750 of 28,905 results. 41 - 6750 of 28,905 results. Download CX-005867: Categorical Exclusion Determination 735-A, D-wing, Main Floor ? ARGUS Halon Suppression System Replacement CX(s) Applied: B2.5 Date: 03/09/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office http://energy.gov/nepa/downloads/cx-005867-categorical-exclusion-determination Download CX-005868: Categorical Exclusion Determination Fire Department Flow Test of N-Area Hydrants CX(s) Applied: B1.3 Date: 03/09/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office http://energy.gov/nepa/downloads/cx-005868-categorical-exclusion-determination Download CX-002208: Categorical Exclusion Determination Monitor Instruments Mass Spectrometer at Aiken County Technology Laboratory

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141

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

01 - 9910 of 26,764 results. 01 - 9910 of 26,764 results. Download CX-005867: Categorical Exclusion Determination 735-A, D-wing, Main Floor ? ARGUS Halon Suppression System Replacement CX(s) Applied: B2.5 Date: 03/09/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office http://energy.gov/nepa/downloads/cx-005867-categorical-exclusion-determination Download CX-005868: Categorical Exclusion Determination Fire Department Flow Test of N-Area Hydrants CX(s) Applied: B1.3 Date: 03/09/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office http://energy.gov/nepa/downloads/cx-005868-categorical-exclusion-determination Download CX-005869: Categorical Exclusion Determination Waste Analysis Characterization Methods in the Analytical Development Wet

142

Categorical Exclusion Determinations: South Carolina | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

May 14, 2013 May 14, 2013 CX-010493: Categorical Exclusion Determination Determining Distribution Coefficients by Surface-Enhanced Raman Spectroscopy (SERS) CX(s) Applied: B3.6 Date: 05/14/2013 Location(s): South Carolina Offices(s): Savannah River Operations Office May 14, 2013 CX-010492: Categorical Exclusion Determination Permeation Testing Metals, Ceramics, and Polymers CX(s) Applied: B3.6 Date: 05/14/2013 Location(s): South Carolina Offices(s): Savannah River Operations Office May 9, 2013 CX-010498: Categorical Exclusion Determination Crush and Disperse Specimen Preparation Technique CX(s) Applied: B3.6 Date: 05/09/2013 Location(s): South Carolina Offices(s): Savannah River Operations Office May 7, 2013 CX-010499: Categorical Exclusion Determination 735-A, D-Wing, Main Floor - ARGUS Halon Suppression System Replacement

143

First Observation of Cabibbo-Suppressed ?_c^0 Decays  

E-Print Network (OSTI)

We report the first observation of the Cabibbo-suppressed decays $\\Xi_c^0\\rightarrow \\Xi^- K^+$, $\\Xi_c^0\\ra\\Lambda K^+ K^-$ and $\\Xi_c^0\\rightarrow \\Lambda \\phi$, using a data sample of $711\\, \\mathrm{fb}^{-1}$ collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We measure the ratios of branching fractions to be $\\frac{{\\cal B}(\\Xi_c^0\\ra \\Xi^- K^+)}{{\\cal B}(\\Xi^0_c\\ra\\Xi^-\\pi^+)}=(2.75\\pm 0.51\\pm 0.25)\\times 10^{-2}$, $\\frac{{\\cal B}(\\Xi_c^0\\ra\\Lambda K^+ K^-)}{{\\cal B}(\\Xi_c^0\\rightarrow\\Xi^- \\pi^+)}=(2.86\\pm 0.61\\pm 0.24)\\times 10^{-2}$ and $\\frac{{\\cal B}(\\Xi_c^0\\ra \\Lambda\\phi)}{{\\cal B}(\\Xi^0_c\\ra\\Xi^-\\pi^+)}=(3.43\\pm 0.58\\pm 0.32)\\times 10^{-2}$, where the first uncertainty is statistical and the second is systematic.

Belle Collaboration; R. Chistov; I. Adachi; H. Aihara; D. M. Asner; V. Aulchenko; T. Aushev; A. M. Bakich; A. Bala; V. Bhardwaj; B. Bhuyan; A. Bondar; G. Bonvicini; A. Bozek; M. Bra?ko; J. Brodzicka; T. E. Browder; V. Chekelian; A. Chen; P. Chen; B. G. Cheon; K. Chilikin; I. -S. Cho; K. Cho; V. Chobanova; Y. Choi; D. Cinabro; M. Danilov; Z. Doležal; D. Dutta; S. Eidelman; D. Epifanov; H. Farhat; J. E. Fast; M. Feindt; T. Ferber; A. Frey; V. Gaur; N. Gabyshev; S. Ganguly; R. Gillard; Y. M. Goh; B. Golob; J. Haba; T. Hara; K. Hayasaka; H. Hayashii; Y. Horii; Y. Hoshi; W. -S. Hou; H. J. Hyun; T. Iijima; A. Ishikawa; R. Itoh; Y. Iwasaki; T. Julius; D. H. Kah; J. H. Kang; E. Kato; T. Kawasaki; H. Kichimi; C. Kiesling; D. Y. Kim; H. J. Kim; J. B. Kim; J. H. Kim; K. T. Kim; Y. J. Kim; K. Kinoshita; J. Klucar; B. R. Ko; P. Kodyš; S. Korpar; P. Križan; T. Kumita; A. Kuzmin; Y. -J. Kwon; J. S. Lange; S. -H. Lee; J. Li; Y. Li; J. Libby; C. Liu; Y. Liu; D. Liventsev; P. Lukin; D. Matvienko; H. Miyata; R. Mizuk; G. B. Mohanty; A. Moll; T. Mori; N. Muramatsu; R. Mussa; E. Nakano; M. Nakao; Z. Natkaniec; M. Nayak; E. Nedelkovska; C. Ng; S. Nishida; O. Nitoh; S. Ogawa; S. Okuno; S. L. Olsen; C. Oswald; G. Pakhlova; C. W. Park; H. Park; H. K. Park; R. Pestotnik; M. Petri?; L. E. Piilonen; M. Ritter; M. Röhrken; A. Rostomyan; H. Sahoo; T. Saito; K. Sakai; Y. Sakai; S. Sandilya; D. Santel; L. Santelj; T. Sanuki; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; D. Semmler; K. Senyo; O. Seon; M. E. Sevior; M. Shapkin; C. P. Shen; T. -A. Shibata; J. -G. Shiu; B. Shwartz; A. Sibidanov; F. Simon; Y. -S. Sohn; A. Sokolov; E. Solovieva; M. Stari?; M. Steder; M. Sumihama; T. Sumiyoshi; U. Tamponi; K. Tanida; G. Tatishvili; Y. Teramoto; M. Uchida; T. Uglov; Y. Unno; S. Uno; P. Urquijo; Y. Usov; S. E. Vahsen; C. Van Hulse; P. Vanhoefer; G. Varner; K. E. Varvell; A. Vinokurova; M. N. Wagner; C. H. Wang; M. -Z. Wang; P. Wang; X. L. Wang; Y. Watanabe; K. M. Williams; E. Won; B. D. Yabsley; J. Yamaoka; Y. Yamashita; S. Yashchenko; Y. Yook; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhulanov; A. Zupanc

2013-06-25T23:59:59.000Z

144

Measurement of Cabibbo suppressed decays of the $\\tau$ lepton  

E-Print Network (OSTI)

Branching ratios for the dominant Cabibbo-suppressed decays of the \\tau lepton have been measured by CLEO~II in e^+ e^- annihilation at CESR (\\sqrt{s} \\sim 10.6~GeV) using kaons with momenta below 0.7\\ \\rm GeV/c. The inclusive branching ratio into one charged kaon is (1.60 \\pm 0.12 \\pm 0.19)\\%. For the exclusive decays, B(\\tau \\to K^-) = (0.66 \\pm 0.07 \\pm 0.09)\\%, B(\\tau \\to K^- \\pi^0) = (0.51 \\pm 0.10 \\pm 0.07)\\%, and, based on three events, B(\\tau \\to K^- \\pi^0 \\pi^0) < 0.3\\% at the 90\\% confidence level. These represent significant improvements over previous results. B(\\tau\\to K^- \\pi^0) is measured for the first time with exclusive \\pi^0 reconstruction. hardcopies with figures can be obtained by writing to: Pam Morehouse preprint secretary Newman Lab Cornell University Ithaca, NY 14853 or by sending mail to: preprints@lns62.lns.cornell.edu

Battle, M; Kwon, Y; Roberts, S; Thorndike, E H; Wang, C H; Dominick, J; Lambrecht, M; Sanghera, S; Shelkov, V; Skwarnicki, T; Stroynowski, R; Volobuev, I P; Wei, G; Zadorozhny, P; Artuso, M; Goldberg, M; He, D; Horwitz, N; Kennett, R; Mountain, R; Moneti, G C; Muheim, F; Mukhin, Y; Playfer, S; Rozen, Y; Stone, S; Thulasidas, M; Vasseur, G; Zhu, G; Bartelt, J; Csorna, S E; Egyed, Z; Jain, V; Kinoshita, K; Edwards, K W; Ogg, M; Britton, D I; Hyatt, E R F; MacFarlane, D B; Patel, P M; Akerib, D S; Barish, B C; Chadha, M; Chan, S; Cowen, D F; Eigen, G; Miller, J S; O'Grady, C; Urheim, J; Weinstein, A J; Acosta, D; Athanas, M; Masek, G E; Paar, H P; Sivertz, M; Gronberg, J B; Kutschke, R; Menary, S R; Morrison, R J; Nakanishi, S; Nelson, H N; Nelson, T K; Qiao, C; Richman, J D; Ryd, A; Tajima, H; Sperka, D; Witherell, M S; Procario, M; Balest, R; Cho, K; Daoudi, M; Ford, W T; Johnson, D R; Lingel, K; Lohner, M; Rankin, P; Smith, J G; Alexander, J P; Bebek, C; Berkelman, K; Bloom, K; Browder, T E; Cassel, David G; Cho, H A; Coffman, D M; Drell, P S; Ehrlich, R; Gaidarev, P B; Galik, R S; García-Sciveres, M; Geiser, B; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Jones, C D; Jones, S L; Kandaswamy, J; Katayama, N; Kim, P C; Kreinick, D L; Ludwig, G S; Masui, J; Mevissen, J; Mistry, N B; Ng, C R; Nordberg, E; Patterson, J R; Peterson, D; Riley, D; Salman, S; Sapper, M; Würthwein, F; Avery, P; Freyberger, A P; Rodríguez, J; Stephens, R; Yang, S; Yelton, J; Cinabro, D; Henderson, S; Liu, T; Saulnier, M; Wilson, R; Yamamoto, H; Bergfeld, T; Eisenstein, B I; Gollin, G; Ong, B; Palmer, M; Selen, M; Thaler, J J; Sadoff, A J; Ammar, R; Ball, S; Baringer, P; Bean, A; Besson, D; Coppage, D; Copty, N K; Davis, R; Hancock, N; Kelly, M; Kwak, N; Lam, H; Kubota, Y; Lattery, M; Nelson, J K; Patton, S; Perticone, D; Poling, R A; Savinov, V; Schrenk, S; Wang, R; Alam, M S; Kim, I J; Nemati, B; O'Neill, J J; Severini, H; Sun, C R; Zoeller, M M; Crawford, G; Daubenmier, C M; Fulton, R; Fujino, D; Gan, K K; Honscheid, K; Kagan, H; Kass, R; Lee, J; Malchow, R L; Skovpen, Y; Sung, M; White, C; Butler, F; Fu, X; Kalbfleisch, G R; Ross, W R; Skubic, P L; Snow, J; Wang, P L; Wood, M; Brown, D N; Fast, J; McIlwain, R L; Miao, T; Miller, D H; Modesitt, M; Payne, D; Shibata, E I; Shipsey, I P J; Wang Pei Ning

1994-01-01T23:59:59.000Z

145

Fission-Suppressed Fusion, Thorium-Cycle Breeder and Nonproliferation  

Science Conference Proceedings (OSTI)

Fusion-Fission Hybrids and Transmutation / Proceedings of the Fifteenth International Conference on Emerging Nuclear Energy Systems

R. W. Moir

146

Error suppression and error correction in adiabatic quantum computation I: techniques and challenges  

E-Print Network (OSTI)

Adiabatic quantum computation (AQC) is known to possess some intrinsic robustness, though it is likely that some form of error correction will be necessary for large scale computations. Error handling routines developed for circuit-model quantum computation do not transfer easily to the AQC model since these routines typically require high-quality quantum gates, a resource not generally allowed in AQC. There are two main techniques known to suppress errors during an AQC implementation: energy gap protection and dynamical decoupling. Here we show that both these methods are intimately related and can be analyzed within the same formalism. We analyze the effectiveness of such error suppression techniques and identify critical constraints on the performance of error suppression in AQC, suggesting that error suppression by itself is insufficient for large-scale, fault-tolerant AQC and that a form of error correction is needed. We discuss progress towards implementing error correction in AQC and enumerate several key outstanding problems. This work is a companion paper to "Error suppression and error correction in adiabatic quantum computation II: non-equilibrium dynamics"', which provides a dynamical model perspective on the techniques and limitations of error suppression and error correction in AQC. In this paper we discuss the same results within a quantum information framework, permitting an intuitive discussion of error suppression and correction in encoded AQC.

Kevin C. Young; Mohan Sarovar; Robin Blume-Kohout

2013-07-22T23:59:59.000Z

147

Microglial activation induced by brain trauma is suppressed by post-injury treatment with a PARP inhibitor  

E-Print Network (OSTI)

1 activity suppresses NF-kB-dependent gene transcription andinhibition suppresses NF-kB- dependent gene transcription inof PARP inhibitors to block NF-kB - mediated inflammatory

2012-01-01T23:59:59.000Z

148

Frontal Wave Stability during Moist Deformation Frontogenesis. Part II: The Suppression of Nonlinear Wave Development  

Science Conference Proceedings (OSTI)

In this paper, the role of horizontal deformation and the associated frontogenetic ageostrophic circulation in suppressing the development of nonlinear waves is assessed. Unless linear barotropic frontal waves can become nonlinear, the associated ...

Craig H. Bishop; Alan J. Thorpe

1994-03-01T23:59:59.000Z

149

Suppression of ICE and Apoptosis in Mammary Epithelial Cells by Extracellular Matrix  

E-Print Network (OSTI)

Suppression of ICE and Apoptosis in Mammary Epithelial Cellsmodulate the expression of ICE remain to be elucidated, asdo the in vivo substrates for ICE or related enzymes and the

Boudreau, Nancy

2011-01-01T23:59:59.000Z

150

Has Hail Suppression in Eastern Yugoslavia Led to a Reduction in the Frequency of Hail?  

Science Conference Proceedings (OSTI)

An earlier attempt to estimate the effect of hail suppression by silver iodide seeding in eastern parts of Yugoslavia, based on hail-frequency data at stations having professional observers, is extended here. Hail-frequency data only are ...

Fedor Mesinger; Nedeljka Mesinger

1992-01-01T23:59:59.000Z

151

Gain media edge treatment to suppress amplified spontaneous emission in a high power laser  

DOE Patents (OSTI)

A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. By roughening one or more peripheral edges of a solid-state crystal or ceramic laser gain media and by bonding such edges using a substantially high index bonding elastomer or epoxy to a predetermined electromagnetic absorbing arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE and parasitic oscillation modes can be effectively suppressed.

Hackel, Lloyd A. (Livermore, CA); Soules, Thomas F. (Livermore, CA); Fochs, Scott N. (Livermore, CA); Rotter, Mark D. (San Ramon, CA); Letts, Stephan A. (San Ramon, CA)

2008-12-09T23:59:59.000Z

152

Determining manufacturing parameters to suppress system variance using linear and non-linear models  

Science Conference Proceedings (OSTI)

Determining manufacturing parameters for a new product is fundamentally a difficult problem, because there has little suggestion information. There are several researches on this topic, and most of them focus on single specific model or the engineer's ... Keywords: Engineering problem, Manufacturing, TFT-LCD

Der-Chiang Li; Wen-Chih Chen; Chiao-Wen Liu; Che-Jung Chang; Chien-Chih Chen

2012-03-01T23:59:59.000Z

153

Mechanism for the suppression of quantum noise at large scales on expanding space  

E-Print Network (OSTI)

We present an exactly-solvable model for the suppression of quantum noise at large scales on expanding space. The suppression arises naturally in the de Broglie-Bohm pilot-wave formulation of quantum theory, according to which the Born probability rule has a dynamical origin. For a scalar field on a radiation-dominated background we construct the exact solution for the time-evolving wave functional and study properties of the associated field trajectories. It is shown that the time evolution of a field mode on expanding space is mathematically equivalent to that of a standard harmonic oscillator with a 'retarded time' that depends on the wavelength of the mode. In the far super-Hubble regime the equivalent oscillator evolves over only one Hubble time, yielding a simple mechanism whereby relaxation to the Born rule can be suppressed on very large scales. We present numerical simulations illustrating how the expansion of space can cause a retardation of relaxation in the super-Hubble regime. Given these results it is natural to expect a suppression of quantum noise at super-Hubble wavelengths. Such suppression could have taken place in a pre-inflationary era, resulting in a large-scale power deficit in the cosmic microwave background.

Samuel Colin; Antony Valentini

2013-06-07T23:59:59.000Z

154

Magnetic turbulence suppression by a helical mode in a cylindrical geometry  

Science Conference Proceedings (OSTI)

To study processes involved in a helical structure formation in reversed field pinch devices, the scaling of a turbulent boundary layer width associated with a vortex structure having large shears of magnetic field and flow is obtained for reduced magnetohydrodynamics. The coherent vortex, with its flow and magnetic shears, interacts with Alfven turbulence, forming a turbulent boundary layer at the edge of the vortex. The layer arises from the balance between turbulence diffusion rates and shearing rates and suppresses the turbulence in the structure. The suppression of turbulence impedes relaxation of the coherent vortex profiles, leading to long coherence times. The scaling of the boundary layer width reveals that both magnetic shear and flow shear can effectively suppress magnetic turbulence.

Kim, J.-H.; Terry, P. W. [Department of Physics and Center for Momentum Transport and Flow Organization, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

2012-12-15T23:59:59.000Z

155

Phosphorous transient enhanced diffusion suppression and activation enhancement with cluster carbon co-implantation  

SciTech Connect

Carbon co-implantation is well known as an effective method for suppressing boron/phosphorous transient enhanced diffusion (TED). Germanium pre-amorphization implantation (PAI) is usually applied prior to carbon co-implantation for suppressing channeling tail of dopants. In this study, cluster carbon was applied instead of the combination of germanium PAI and monomer carbon co-implantation prior to phosphorous implantation. Dependence of phosphorous activation and TED on amorphous layer thickness, carbon dose, carbon distribution and substrate temperature have been investigated. Cluster carbon implantation enables thick amorphous layer formation and TED suppression at the same time and low temperature implantation enhances the ability of amorphous layer formation so that shallow junction and low Rs can be achieved without Ge implantation.

Nakashima, Yoshiki; Hamamoto, Nariaki; Nagayama, Tsutomu; Koga, Yuji; Umisedo, Sei; Kawamura, Yasunori; Hashimoto, Masahiro; Onoda, Hiroshi [Nissin Ion Equipment Co., Ltd., 575 Kuze Tonoshiro-cho, Minami-ku, Kyoto, 601-8205 (Japan)

2012-11-06T23:59:59.000Z

156

Vibration Suppression and Flywheel Energy Storage in a Drillstring Bottom-Hole-Assembly  

E-Print Network (OSTI)

In this study, a novel concept for a downhole flywheel energy storage module to be embedded in a bottom-hole-assembly (BHA) is presented and modeled, as an alternative power source to existing lithium-ion battery packs currently deployed in measurement-while-drilling (MWD) or logging-while-drilling (LWD) operations. Lithium-ion batteries disadvantages include deteriorated performance in high temperature, limited lifetime that necessitates frequent replacement which elevates operational costs, and environmental disposal. Extreme and harsh downhole conditions necessitate that the flywheel module withstands temperatures and pressures exceeding 300 ?F and 20 kpsi, respectively, as well as violent vibrations encountered during drilling. Moreover, the flywheel module should adhere to the geometric constraints of the wellbore and its corresponding BHA. Hence, a flywheel sizing procedure was developed that takes into consideration the required energy to be stored, the surrounding environmental conditions, and the geometric constraints. A five-axis magnetic levitation control system was implemented and tuned to maintain continuous suspension of the flywheel under the harsh lateral, axial and torsional drilling vibrations of the BHA. Thus, an integrated finite element model was developed that included the rotordynamic behavior of the flywheel and the BHA, the component dynamics of the magnetic levitation control system, and the cutting dynamics of the drillbit for both PDC and tricone types. The model also included a newly developed coupling between lateral, axial and torsional vibrations. It was demonstrated through simulations conducted by numerical integration that the flywheel maintains levitation due to all different types of external vibration as well as its own lateral vibration due to mass unbalance. Moreover, a passive proof-mass-damper (PPMD) was developed that suppresses axial bit-bounce vibrations as well as torsional vibrations, and was extended to also mitigate lateral vibrations. Optimized values of the mass, stiffness and damping values of the PPMD were obtained by the hybrid analytical-numerical Chebyshev spectral method that was superior in computational efficiency to iterative numerical integration. This also enabled the fine-plotting of an operating stability chart indicating stability regions where bit-bounce and stick-slip are avoided. The proof-mass-damping concept was extended to the flywheel to be an active proof-mass-damper (APMD) where simulations indicated functionality for a light-weight BHA.

Saeed, Ahmed

2012-05-01T23:59:59.000Z

157

WIND-DRIVEN ACCRETION IN PROTOPLANETARY DISKS. I. SUPPRESSION OF THE MAGNETOROTATIONAL INSTABILITY AND LAUNCHING OF THE MAGNETOCENTRIFUGAL WIND  

SciTech Connect

We perform local, vertically stratified shearing-box MHD simulations of protoplanetary disks (PPDs) at a fiducial radius of 1 AU that take into account the effects of both Ohmic resistivity and ambipolar diffusion (AD). The magnetic diffusion coefficients are evaluated self-consistently from a look-up table based on equilibrium chemistry. We first show that the inclusion of AD dramatically changes the conventional picture of layered accretion. Without net vertical magnetic field, the system evolves into a toroidal field dominated configuration with extremely weak turbulence in the far-UV ionization layer that is far too inefficient to drive rapid accretion. In the presence of a weak net vertical field (plasma {beta} {approx} 10{sup 5} at midplane), we find that the magnetorotational instability (MRI) is completely suppressed, resulting in a fully laminar flow throughout the vertical extent of the disk. A strong magnetocentrifugal wind is launched that efficiently carries away disk angular momentum and easily accounts for the observed accretion rate in PPDs. Moreover, under a physical disk wind geometry, all the accretion flow proceeds through a strong current layer with a thickness of {approx}0.3H that is offset from disk midplane with radial velocity of up to 0.4 times the sound speed. Both Ohmic resistivity and AD are essential for the suppression of the MRI and wind launching. The efficiency of wind transport increases with increasing net vertical magnetic flux and the penetration depth of the FUV ionization. Our laminar wind solution has important implications on planet formation and global evolution of PPDs.

Bai Xuening; Stone, James M., E-mail: xbai@cfa.harvard.edu [Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States)

2013-05-20T23:59:59.000Z

158

Signal Processing System for the CASA Integrated Project I Radars  

Science Conference Proceedings (OSTI)

This paper describes the waveform design space and signal processing system for dual-polarization Doppler weather radar operating at X band. The performance of the waveforms is presented with ground clutter suppression capability and mitigation ...

Nitin Bharadwaj; V. Chandrasekar; Francesc Junyent

2010-09-01T23:59:59.000Z

159

Wind noise suppression in cochlear implants with one and two microphones Student Investigator: Casey Cox  

E-Print Network (OSTI)

1 Wind noise suppression in cochlear implants with one and two microphones Student Investigator coding strategy used. However, performance deteriorates significantly in wind noise. Wind noise was to investigate how wind noise affects speech intelligibility in cochlear implant users. Default noise reduction

Peterson, Blake R.

160

Suppression of Stationary Planetary Waves by Internal Gravity Waves in the Mesosphere  

Science Conference Proceedings (OSTI)

The suppression of stationary planetary waves by internal gravity waves in the mesosphere is treated using a quasi-geostrophic model on a midlatitude beta-plane. The drag forces due to internal gravity waves are parameterized based on the wave ...

Saburo Miyahara

1985-01-01T23:59:59.000Z

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161

The Use of Oil Refinery Wastes as a Dust Suppression Surfactant for Use in Mining  

Science Conference Proceedings (OSTI)

In this research, the suitability of a selection of petroleum refinery wastes as a dust suppressant were examined. Dust is a significant problem in surface and underground mining mainly because of its adverse effects on human health and machinery. Hence, dust control and suppression is a vital part of mine planning for mining engineers. Water is the oldest and the cheapest suppressant in dealing with the mine dusts. However, surfactant use has recently been used for a wider range of applications in the mining industry. In order to carry out laboratory experiments, a dust chamber was designed and manufactured. The chamber has an inlet for coal dust entrance and a nozzle for spraying water and the oil refinery wastes. Water and the surfactants were mixed at various ratios and then sprayed onto the coal dusts within the cell. Dust concentration was measured systematically to determine the effects of surfactant containing solution on the coal dust and the data obtained by the measurements were analyzed. The results showed that the oil refinery wastes could be used as a dust suppressant, which may create an economical utilization for the wastes concerned.

Dixon-Hardy, D.W.; Beyhan, S.; Ediz, I.G.; Erarslan, K. [University of Leeds, Leeds (United Kingdom)

2008-10-15T23:59:59.000Z

162

RMP ELM Suppression in DIII-D Plasmas with ITER Similar Shapes and Collisionalities  

SciTech Connect

Large Type-I edge localized modes (ELMs) are completely eliminated with small n = 3 resonant magnetic perturbations (RMP) in low average triangularity, = 0.26, plasmas and in ITER similar shaped (ISS) plasmas, = 0.53, with ITER relevant collisionalities ve 0.2. Significant differences in the RMP requirements and in the properties of the ELM suppressed plasmas are found when comparing the two triangularities. In ISS plasmas, the current required to suppress ELMs is approximately 25% higher than in low average triangularity plasmas. It is also found that the width of the resonant q95 window required for ELM suppression is smaller in ISS plasmas than in low average triangularity plasmas. An analysis of the positions and widths of resonant magnetic islands across the pedestal region, in the absence of resonant field screening or a self-consistent plasma response, indicates that differences in the shape of the q profile may explain the need for higher RMP coil currents during ELM suppression in ISS plasmas. Changes in the pedestal profiles are compared for each plasma shape as well as with changes in the injected neutral beam power and the RMP amplitude. Implications of these results are discussed in terms of requirements for optimal ELM control coil designs and for establishing the physics basis needed in order to scale this approach to future burning plasma devices such as ITER.

Evans, T.E. [General Atomics, San Diego; Fenstermacher, M. E. [Lawrence Livermore National Laboratory (LLNL); Moyer, R.A. [University of California, San Diego; Osborne, T. H. [General Atomics; Watkins, J. G. [Sandia National Laboratories (SNL); Gohil, P. [General Atomics; Joseph, I. [University of California, San Diego; Schaffer, M. J. [General Atomics, San Diego; Baylor, Larry R [ORNL; Becoulet, M. [CEA Cadarache, St. Paul lex Durance, France; Boedo, J.A. [University of California, San Diego; Burrell, K. H. [General Atomics; DeGrassie, J. S. [General Atomics, San Diego; Finken, K. H. [Max-Planck-Institute for Plasmaphysik, EURATOM-Association, Greifswald, Germany; Jernigan, Thomas C [ORNL; Jakubowski, M. W. [Max-Planck-Institute for Plasmaphysik, EURATOM-Association, Greifswald, Germany; Lasnier, C. J. [Lawrence Livermore National Laboratory (LLNL); Lehnen, M. [Forschungszentrum Julich, Julich, Germany; Leonard, A. W. [General Atomics; Lonnroth, J. [Association Euratom-Tekes, Finland; Nardon, E. [CEA Cadarache, St. Paul lex Durance, France; Parail, V. [EURATOM / UKAEA, UK; Schmitz, O. [Forschungszentrum Julich, Julich, Germany; Unterberg, B. [Max-Planck-Institute for Plasmaphysik, EURATOM-Association, Greifswald, Germany; West, W.P. [General Atomics, San Diego

2008-01-01T23:59:59.000Z

163

Speckle suppression in SAR images using the 2-D GARCH model  

Science Conference Proceedings (OSTI)

A novel Bayesian-based speckle suppression method for Synthetic Aperture Radar (SAR) images is presented that preserves the structural features and textural information of the scene. First, the logarithmic transform of the original image is analyzed ... Keywords: 2-D GARCH model, MAP estimation, speckle, statistical modeling, synthetic aperture radar

Maryam Amirmazlaghani; Hamidreza Amindavar; Alireza Moghaddamjoo

2009-02-01T23:59:59.000Z

164

Analyzing space-time sensor network data under suppression and failure in transmission  

Science Conference Proceedings (OSTI)

In this paper we present a fully model-based analysis of the effects of suppression and failure in data transmission with sensor networks. Sensor networks are becoming an increasingly common data collection mechanism in a variety of fields. Sensors can ... Keywords: Hierarchical models, Information loss, Linear constraints, Spatio temporal models, Wireless sensor networks

Gavino Puggioni; Alan E. Gelfand

2010-10-01T23:59:59.000Z

165

Novel Americium Treatment Process for Surface Water and Dust Suppression Water  

SciTech Connect

The Rocky Flats Environmental Technology Site (RFETS), a former nuclear weapons production plant, has been remediated under CERCLA and decommissioned to become a National Wildlife Refuge. The site conducted this cleanup effort under the Rocky Flats Cleanup Agreement (RFCA) that established limits for the discharge of surface and process waters from the site. At the end of 2004, while a number of process buildings were undergoing decommissioning, routine monitoring of a discharge pond (Pond A-4) containing approximately 28 million gallons of water was discovered to have been contaminated with a trace amount of Americium-241 (Am-241). While the amount of Am-241 in the pond waters was very low (0.5 - 0.7 pCi/l), it was above the established Colorado stream standard of 0.15 pCi/l for release to off site drainage waters. The rapid successful treatment of these waters to the regulatory limit was important to the site for two reasons. The first was that the pond was approaching its hold-up limit. Without rapid treatment and release of the Pond A-4 water, typical spring run-off would require water management actions to other drainages onsite or a mass shuttling of water for disposal. The second reason was that this type of contaminated water had not been treated to the stringent stream standard at Rocky Flats before. Technical challenges in treatment could translate to impacts on water and secondary waste management, and ultimately, cost impacts. All of the technical challenges and specific site criteria led to the conclusion that a different approach to the treatment of this problem was necessary and a crash treatability program to identify applicable treatment techniques was undertaken. The goal of this program was to develop treatment options that could be implemented very quickly and would result in the generation of no high volume secondary waste that would be costly to dispose. A novel chemical treatment system was developed and implemented at the RFETS to treat Am-241 contaminated pond water, surface run-off and D and D dust suppression water during the later stages of the D and D effort at Rocky Flats. This novel chemical treatment system allowed for highly efficient, high-volume treatment of all contaminated waste waters to the very low stream standard of 0.15 pCi/1 with strict compliance to the RFCA discharge criteria for release to off-site surface waters. The rapid development and implementation of the treatment system avoided water management issues that would have had to be addressed if contaminated water had remained in Pond A-4 into the Spring of 2005. Implementation of this treatment system for the Pond A-4 waters and the D and D waters from Buildings 776 and 371 enabled the site to achieve cost-effective treatment that minimized secondary waste generation, avoiding the need for expensive off-site water disposal. Water treatment was conducted for a cost of less than $0.20/gal which included all development costs, capital costs and operational costs. This innovative and rapid response effort saved the RFETS cleanup program well in excess of $30 million for the potential cost of off-site transportation and treatment of radioactive liquid waste. (authors)

Tiepel, E.W.; Pigeon, P. [Golder Associates (United States); Nesta, S. [Kaiser-Hill Company, LLC (United States); Anderson, J. [Rocky Flats Closure Site Services - RFCSS (United States)

2006-07-01T23:59:59.000Z

166

Hybrid Systems Architectures  

E-Print Network (OSTI)

ion suppression of lower-level information not relevant for the current task Encapsulation (information hiding) implementation details are hidden, only interface information is visible F. Kurfeß Hybrid System Architectures ASHS '96 37 Inheritance common characteristics are derived from ancestors Polymorphism appropriate instances of classes and operators can be selected at runtime Advantages ffl very flexible ffl suitable for large systems ffl support reuse Problems ffl handling of new and atypical situations ffl quite complex ffl formal verification F. Kurfeß Hybrid System Architectures ASHS '96 38 Expert System What is an Expert System? Basic concepts ffl designer / user supplies facts and information ffl user asks queries and receives expert advice ffl limited to a problem domain (knowledge domain) Components ffl user interface ffl knowledge base ffl inference mechanism Synonyms: knowledge-based system, knowledge-based expert system F. Kurfeß Hybrid System Archi...

Franz J. Kurfeß

1996-01-01T23:59:59.000Z

167

Suppression of Bose-Einstein condensation in one-dimensional scale-free random potentials  

Science Conference Proceedings (OSTI)

A perfect Bose gas can condensate in one dimension in the presence of a random potential due to the presence of Lifshitz tails in the one-particle density of states. Here, we show that scale-free correlations in the random potential suppress the disorder induced Bose-Einstein condensation (BEC). Within a tight-binding approach, we consider free Bosons moving in a scale-free correlated random potential with spectral density decaying as 1/k{sup {alpha}}. The critical temperature for BEC is shown to vanish in chains with a binary nonstationary potential ({alpha}>1). On the other hand, a weaker suppression of BEC takes place in nonbinarized scale-free potentials. After a slightly increase in the stationary regime, the BEC transition temperature continuously decays as the spectral exponent {alpha}{yields}{infinity}.

Oliveira, I. N. de; Moura, F. A. B. F. de; Caetano, R. A.; Lyra, M. L. [Instituto de Fisica, Universidade Federal de Alagoas, 57072-970 Maceio, AL (Brazil)

2010-11-01T23:59:59.000Z

168

Oxygen suppression in boiling water reactors. Quarterly report 2, January 1--March 31, 1978  

DOE Green Energy (OSTI)

Boiling water reactors (BWR's) generally use high purity, no-additive feedwater. Primary recirculating coolant is neutral pH, and contains 100 to 300 ppB oxygen and stoichiometrically related dissolved hydrogen. However, oxygenated water increases austenitic stainless steel susceptibility to intergranular stress-corrosion cracking (IGSCC) when other requisite factors such as stress and sensitization are present. Thus, reduction or elimination of the oxygen in BWR water may preclude cracking incidents. One approach to reduction of the BWR coolant oxygen concentration is to adopt alternate water chemistry (AWC) conditions using an additive(s) to suppress or reverse radiolytic oxygen formation. Several additives are available to do this but they have seen only limited and specialized application in BWR's. The objective of this program is to perform an in-depth engineering evaluation of the potential suppression additives supported by critical experiments where required to resolve substantive uncertainties.

Burley, E.L.

1978-10-01T23:59:59.000Z

169

Observation of Shot Noise Suppression at Optical Wavelengths in a Relativistic Electron Beam  

Science Conference Proceedings (OSTI)

Control of collective properties of relativistic particles is increasingly important in modern accelerators. In particular, shot noise affects accelerator performance by driving instabilities or by competing with coherent processes. We present experimental observations of shot noise suppression in a relativistic beam at the Linac Coherent Light Source. By adjusting the dispersive strength of a chicane, we observe a decrease in the optical transition radiation emitted from a downstream foil. We show agreement between the experimental results, theoretical models, and 3D particle simulations.

Ratner, Daniel; Stupakov, Gennady; /SLAC

2012-06-19T23:59:59.000Z

170

Sequential suppression of quarkonia and high-energy nucleus-nucleus collisions  

E-Print Network (OSTI)

According to the usual application of the sequential-suppression picture to the dynamics of heavy quarkonia in the hot medium formed in ultrarelativistic nuclear collisions, quark-antiquark pairs created in a given bound or unbound state remain in that same state as the medium evolves. We argue that this scenario implicitly assumes an adiabatic evolution of the quarkonia, and we show that the validity of the adiabaticity assumption is questionable.

Dutta, Nirupam

2012-01-01T23:59:59.000Z

171

Fission-suppressed fusion breeder on the thorium cycle and nonproliferation  

Science Conference Proceedings (OSTI)

Fusion reactors could be designed to breed fissile material while suppressing fissioning thereby enhancing safety. The produced fuel could be used to startup and makeup fuel for fission reactors. Each fusion reaction can produce typically 0.6 fissile atoms and release about 1.6 times the 14 MeV neutron's energy in the blanket in the fission-suppressed design. This production rate is 2660 kg/1000 MW of fusion power for a year. The revenues would be doubled from such a plant by selling fuel at a price of 60/g and electricity at $0.05/kWh for Q=P fusion /Pinput=4. Fusion reactors could be designed to destroy fission wastes by transmutation and fissioning but this is not a natural use of fusion whereas it is a designed use of fission reactors. Fusion could supply makeup fuel to fission reactors that were dedicated to fissioning wastes with some of their neutrons. The design for safety and heat removal and other items is already accomplished with fission reactors. Whereas fusion reactors have geometry that compromises safety with a complex and thin wall separating the fusion zone from the blanket zone where wastes could be destroyed. Nonproliferation can be enhanced by mixing 233U with 238U. Also nonproliferation is enhanced in typical fission-suppressed designs by generating up to 0.05 232U atoms for each 233U atom produced from thorium

R. W. Moir

2012-01-01T23:59:59.000Z

172

Mechanism for the suppression of quantum noise at large scales on expanding space  

E-Print Network (OSTI)

We present an exactly-solvable model for the suppression of quantum noise at large scales on expanding space. The suppression arises naturally in the de Broglie-Bohm pilot-wave formulation of quantum theory, according to which the Born probability rule has a dynamical origin. For a scalar field on a radiation-dominated background we construct the exact solution for the time-evolving wave functional and study properties of the associated field trajectories. It is shown that the time evolution of a field mode on expanding space is mathematically equivalent to that of a standard harmonic oscillator with a 'retarded time' that depends on the wavelength of the mode. In the far super-Hubble regime the equivalent oscillator evolves over only one Hubble time, yielding a simple mechanism whereby relaxation to the Born rule can be suppressed on very large scales. We present numerical simulations illustrating how the expansion of space can cause a retardation of relaxation in the super-Hubble regime. Given these results...

Colin, Samuel

2013-01-01T23:59:59.000Z

173

The Relationships Between ELM Suppression, Pedestal Profiles, and Lithium Wall Coatings in NSTX  

SciTech Connect

Recently in the National Spherical Torus Experiment (NSTX), increasing lithium wall coatings suppressed edge localized modes (ELMs), gradually but not quite monotonically. This work details profile and stability analysis as ELMs disappeared throughout the lithium scan. While the quantity of lithium deposited between discharges did not uniquely determine the presence of ELMs, profile analysis demonstrated that lithium was correlated to wider density and pressure pedestals with peak gradients farther from the separatrix. Moreover, the ELMy and ELM-free discharges were cleanly separated by their density and pedestal widths and peak gradient locations. Ultimately, ELMs were only suppressed when lithium caused the density pedestal to widen and shift inward. These changes in the density gradient were directly reflected in the pressure gradient and calculated bootstrap current. This supports the theory that ELMs in NSTX are caused by peeling and/or ballooning modes, as kink/peeling modes are stabilized when the edge current and pressure gradient shift away from the separatrix. Edge stability analysis using ELITE corroborated this picture, as reconstructed equilibria from ELM-free discharges were generally farther from their kink/peeling stability boundaries than ELMy discharges. We conclude that density profile control provided by lithium is the key first step to ELM suppression in NSTX

D.P. Boyle, R. Maingi, P.B. Snyder, J. Manickam, T.H. Osborne, R.E. Bell, B.P. LeBlanc, and the NSTX Team

2012-08-17T23:59:59.000Z

174

Imaging extrasolar planets by stellar halo suppression in separately-corrected color bands  

E-Print Network (OSTI)

Extra-solar planets have not been imaged directly with existing ground or space telescopes because they are too faint to be seen against the halo of the nearby bright star. Most techniques being explored to suppress the halo are achromatic, with separate correction of diffraction and wavefront errors. Residual speckle structure may be subtracted by differencing images taken through narrowband filters, but photon noise remains and ultimately limits sensitivity. Here we describe two ways to take advantage of narrow bands to reduce speckle photon flux and to obtain better control of systematic errors. Multiple images are formed in separate color bands of 5-10% bandwidth, and recorded by coronagraphic interferometers equipped with active control of wavefront phase and/or amplitude. In one method, a single deformable pupil mirror is used to actively correct both diffraction and wavefront components of the halo. This yields good diffraction suppression for complex pupil obscuration, with high throughput over half the focal plane. In a second method, the coronagraphic interferometer is used as a second stage after conventional apodization. The halo from uncontrollable residual errors in the pupil mask or wavefront is removed by destructive interference made directly at the detector focal plane with an "anti-halo", synthesized by spatial light modulators in the reference arm of the interferometer. In this way very deep suppression may be achieved by control elements with greatly relaxed, and thus achievable, tolerances. In both examples, systematic errors are minimized because the planet imaging cameras themselves also provide the error sensing data.

Johanan L. Codona; Roger Angel

2004-02-17T23:59:59.000Z

175

Feedback control of spin systems  

E-Print Network (OSTI)

The feedback stabilization problem for ensembles of coupled spin 1/2 systems is discussed from a control theoretic perspective. The noninvasive nature of the bulk measurement allows for a fully unitary and deterministic closed loop. The Lyapunov-based feedback design presented does not require spins that are selectively addressable. With this method, it is possible to obtain control inputs also for difficult tasks, like suppressing undesired couplings in identical spin systems.

Claudio Altafini

2006-01-03T23:59:59.000Z

176

Bismuth as a modifier of Au Pd catalyst: Enhancing selectivity in alcohol oxidation by suppressing parallel reaction  

SciTech Connect

Bi has been widely employed as a modifier for Pd and Pt based catalyst mainly in order to improve selectivity. We found that when Bi was added to the bimetallic system AuPd, the effect on activity in alcohol oxidation mainly depends on the amount of Bi regardless its position, being negligible when Bi was 0.1 wt% and detectably negative when the amount was increased to 3 wt%. However, the selectivity of the reactions notably varied only when Bi was deposited on the surface of metal nanoparticles suppressing parallel reaction in both benzyl alcohol and glycerol oxidation. After a careful characterization of all the catalysts and additional catalytic tests, we concluded that the Bi influence on the activity of the catalysts could be ascribed to electronic effect whereas the one on selectivity mainly to a geometric modification. Moreover, the Bi-modified AuPd/AC catalyst showed possible application in the production of tartronic acid, a useful intermediate, from glycerol.

Villa, Alberto [Universita di Milano, Italy; Wang, Di [Fritz Haber Institute of the Max Planck Society, Berlin, Germany; Veith, Gabriel M [ORNL; Prati, Laura [Universita di Milano, Italy

2012-01-01T23:59:59.000Z

177

Suppression Oceanic Rippies by Surfactant-Spectral Effects Deduced from Sun-Glitter, Wave-Staff and Microwave Measurements  

Science Conference Proceedings (OSTI)

Experimental results on suppression of fine sea-surface structures by surfactant in terms of the roughness length obtained from wind profiles and of the wave-energy density from sun-glitter photographs, wave-staff measurements, and microwave ...

Jin Wu

1989-02-01T23:59:59.000Z

178

ASE Suppression in a Diode-Pumped Nd:YLF Regenerative Amplifier Using a Volume Bragg Grating  

Science Conference Proceedings (OSTI)

Instrument-limited suppression of out-of-band amplified spontaneous emission (ASE) is demonstrated for the first time in a Nd:YLF diode-pumped regenerative amplifier using a volume Bragg grating (VBG) as a cavity mirror.

Okishev, A.V.; Dorrer, C.; Smirnov, V.I.; Glebov, L.B.; Zuegel, J.D.

2007-10-11T23:59:59.000Z

179

RapTOR: Automated sequencing library preparation and suppression for rapid pathogen characterization ( 7th Annual SFAF Meeting, 2012)  

Science Conference Proceedings (OSTI)

Todd Lane on "RapTOR: Automated sequencing library preparation and suppression for rapid pathogen characterization" at the 2012 Sequencing, Finishing, Analysis in the Future Meeting held June 5-7, 2012 in Santa Fe, New Mexico.

Lane, Todd [SNL

2012-06-01T23:59:59.000Z

180

Butyl benzyl phthalate suppresses the ATP-induced cell proliferation in human osteosarcoma HOS cells  

Science Conference Proceedings (OSTI)

Butyl benzyl phthalate (BBP), an endocrine disruptor present in the environment, exerts its genomic effects via intracellular steroid receptors and elicits non-genomic effects by interfering with membrane ion-channel receptors. We previously found that BBP blocks the calcium signaling coupled with P2X receptors in PC12 cells (Liu and Chen, 2006). Osteoblast P2X receptors were recently reported to play a role in cell proliferation and bone remodeling. In this present study, the effects of BBP on ATP-induced responses were investigated in human osteosarcoma HOS cells. These receptors mRNA had been detected, named P2X4, P2X7, P2Y2, P2Y4, P2Y5, P2Y9, and P2Y11, in human osteosarcoma HOS cells by RT-PCR. The enhancement of cell proliferation and the decrease of cytoviability had both been shown to be coupled to stimulation via different concentrations of ATP. BBP suppressed the ATP-induced calcium influx (mainly coupled with P2X) and cell proliferation but not the ATP-induced intracellular calcium release (mainly coupled with P2Y) and cytotoxicity in human osteosarcoma HOS cells. Suramin, a common P2 receptor's antagonist, blocked the ATP-induced calcium signaling, cell proliferation, and cytotoxicity. We suggest that P2X is mainly responsible for cell proliferation, and P2Y might be partially responsible for the observed cytotoxicity. BBP suppressed the calcium signaling coupled with P2X, suppressing cell proliferation. Since the importance of P2X receptors during bone metastasis has recently become apparent, the possible toxic risk of environmental BBP during bone remodeling is a public problem of concern.

Liu, P.-S., E-mail: pslediting@mail.scu.edu.t [Department of Microbiology, Soochow University, Shihlin, Taipei, Taiwan (China); Chen, C.-Y. [Department of Microbiology, Soochow University, Shihlin, Taipei, Taiwan (China)

2010-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Defect mode suppression in a photonic crystal structure with a resonance nanocomposite layer  

SciTech Connect

This paper examines the key features of the transmission and reflection spectra of a one-dimensional photonic crystal structure in which a nanocomposite layer is sandwiched between dielectric Bragg mirrors. Two orthogonal polarisations of an incident wave correspond to different plasmon resonance frequencies of the nanocomposite. If one of the plasmon frequencies coincides with the defect mode frequency in one of the photonic bandgaps, complete suppression of the defect mode in the transmission spectrum is possible, which makes the spectra of such structures polarisation-sensitive.

Moiseev, Sergey G; Ostatochnikov, Vladimir A; Sementsov, Dmitrii I

2012-06-30T23:59:59.000Z

182

Away-side distribution in a parton multiple scattering model and background-suppressed measures  

E-Print Network (OSTI)

A model of parton multiple scattering in a dense and expanding medium is described. The simulated results reproduce the general features of the data. In particular, in the intermediate trigger momentum region there is a dip-bump structure, while at higher trigger momentum the double bumps merge into a central peak. Also, a new measure is proposed to quantify the azimuthal distribution with the virtue that it suppresses the statistical fluctuations event-by-event, while enhancing the even-structure of the signal.

Charles B. Chiu; Rudolph C. Hwa

2006-08-30T23:59:59.000Z

183

Problems in suppressing cooling flows in clusters of galaxies by global heat conduction  

E-Print Network (OSTI)

I use a simple analytical model to show that simple heat conduction models cannot significantly suppress cluster cooling flows. I build a static medium where heat conduction globally balances radiative cooling, and then perturb it. I show that a perturbation extending over a large fraction of the cooling flow region will grow to the non-linear regime within a Hubble time. Such perturbations are reasonable in clusters which frequently experience mergers and/or AGN activity. This result strengthens previous findings which show that a steady solution does not exist for a constant heat conduction coefficient.

Noam Soker

2003-02-19T23:59:59.000Z

184

Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays  

E-Print Network (OSTI)

We report on a search for direct CP asymmetry in the singly Cabibbo-suppressed decay D+- --> K+ K- pi+- using a data sample of 476 fb-1 accumulated with the BaBar detector running at and just below the Y(4S) resonance. The CP-violating decay rate asymmetry A_CP is determined to be (0.35 +- 0.30 +- 0.15)%. Model-dependent and model-independent Dalitz plot analysis techniques are used to search for CP-violating asymmetries in the various intermediate states.

BaBar Collaboration; J. P. Lees; V. Poireau; V. Tisserand; J. Garra Tico; E. Grauges; A. Palano; G. Eigen; B. Stugu; D. N. Brown; L. T. Kerth; Yu. G. Kolomensky; G. Lynch; H. Koch; T. Schroeder; D. J. Asgeirsson; C. Hearty; T. S. Mattison; J. A. McKenna; R. Y. So; A. Khan; V. E. Blinov; A. R. Buzykaev; V. P. Druzhinin; V. B. Golubev; E. A. Kravchenko; A. P. Onuchin; S. I. Serednyakov; Yu. I. Skovpen; E. P. Solodov; K. Yu. Todyshev; A. N. Yushkov; M. Bondioli; D. Kirkby; A. J. Lankford; M. Mandelkern; H. Atmacan; J. W. Gary; F. Liu; O. Long; G. M. Vitug; C. Campagnari; T. M. Hong; D. Kovalskyi; J. D. Richman; C. A. West; A. M. Eisner; J. Kroseberg; W. S. Lockman; A. J. Martinez; B. A. Schumm; A. Seiden; D. S. Chao; C. H. Cheng; B. Echenard; K. T. Flood; D. G. Hitlin; P. Ongmongkolkul; F. C. Porter; A. Y. Rakitin; R. Andreassen; Z. Huard; B. T. Meadows; M. D. Sokoloff; L. Sun; P. C. Bloom; W. T. Ford; A. Gaz; U. Nauenberg; J. G. Smith; S. R. Wagner; R. Ayad; W. H. Toki; B. Spaan; K. R. Schubert; R. Schwierz; D. Bernard; M. Verderi; P. J. Clark; S. Playfer; D. Bettoni; C. Bozzi; R. Calabrese; G. Cibinetto; E. Fioravanti; I. Garzia; E. Luppi; L. Piemontese; V. Santoro; R. Baldini-Ferroli; A. Calcaterra; R. de Sangro; G. Finocchiaro; P. Patteri; M. Piccolo; M. Rama; A. Zallo; R. Contri; E. Guido; M. Lo Vetere; M. R. Monge; S. Passaggio; C. Patrignani; E. Robutti; B. Bhuyan; V. Prasad; C. L. Lee; M. Morii; A. J. Edwards; A. Adametz; U. Uwer; H. M. Lacker; T. Lueck; P. D. Dauncey; U. Mallik; C. Chen; J. Cochran; W. T. Meyer; S. Prell; A. E. Rubin; A. V. Gritsan; Z. J. Guo; N. Arnaud; M. Davier; D. Derkach; G. Grosdidier; F. Le Diberder; A. M. Lutz; B. Malaescu; P. Roudeau; M. H. Schune; A. Stocchi; G. Wormser; D. J. Lange; D. M. Wright; C. A. Chavez; J. P. Coleman; J. R. Fry; E. Gabathuler; D. E. Hutchcroft; D. J. Payne; C. Touramanis; A. J. Bevan; F. Di Lodovico; R. Sacco; M. Sigamani; G. Cowan; D. N. Brown; C. L. Davis; A. G. Denig; M. Fritsch; W. Gradl; K. Griessinger; A. Hafner; E. Prencipe; R. J. Barlow; G. Jackson; G. D. Lafferty; E. Behn; R. Cenci; B. Hamilton; A. Jawahery; D. A. Roberts; C. Dallapiccola; R. Cowan; D. Dujmic; G. Sciolla; R. Cheaib; D. Lindemann; P. M. Patel; S. H. Robertson; P. Biassoni; N. Neri; F. Palombo; S. Stracka; L. Cremaldi; R. Godang; R. Kroeger; P. Sonnek; D. J. Summers; X. Nguyen; M. Simard; P. Taras; G. De Nardo; D. Monorchio; G. Onorato; C. Sciacca; M. Martinelli; G. Raven; C. P. Jessop; J. M. LoSecco; W. F. Wang; K. Honscheid; R. Kass; J. Brau; R. Frey; N. B. Sinev; D. Strom; E. Torrence; E. Feltresi; N. Gagliardi; M. Margoni; M. Morandin; M. Posocco; M. Rotondo; G. Simi; F. Simonetto; R. Stroili; S. Akar; E. Ben-Haim; M. Bomben; G. R. Bonneaud; H. Briand; G. Calderini; J. Chauveau; O. Hamon; Ph. Leruste; G. Marchiori; J. Ocariz; S. Sitt; M. Biasini; E. Manoni; S. Pacetti; A. Rossi; C. Angelini; G. Batignani; S. Bettarini; M. Carpinelli; G. Casarosa; A. Cervelli; F. Forti; M. A. Giorgi; A. Lusiani; B. Oberhof; E. Paoloni; A. Perez; G. Rizzo; J. J. Walsh; D. Lopes Pegna; J. Olsen; A. J. S. Smith; A. V. Telnov; F. Anulli; R. Faccini; F. Ferrarotto; F. Ferroni; M. Gaspero; L. Li Gioi; M. A. Mazzoni; G. Piredda; C. Bunger; O. Grunberg; T. Hartmann; T. Leddig; C. Voss; R. Waldi; T. Adye; E. O. Olaiya; F. F. Wilson; S. Emery; G. Hamel de Monchenault; G. Vasseur; Ch. Yeche; D. Aston; D. J. Bard; R. Bartoldus; J. F. Benitez; C. Cartaro; M. R. Convery; J. Dorfan; G. P. Dubois-Felsmann; W. Dunwoodie; M. Ebert; R. C. Field; M. Franco Sevilla; B. G. Fulsom; A. M. Gabareen; M. T. Graham; P. Grenier; C. Hast; W. R. Innes; M. H. Kelsey; P. Kim; M. L. Kocian; D. W. G. S. Leith; P. Lewis; B. Lindquist; S. Luitz; V. Luth; H. L. Lynch; D. B. MacFarlane; D. R. Muller; H. Neal; S. Nelson; M. Perl; T. Pulliam; B. N. Ratcliff; A. Roodman; A. A. Salnikov; R. H. Schindler; A. Snyder; D. Su; M. K. Sullivan; J. Va'vra; A. P. Wagner; W. J. Wisniewski; M. Wittgen; D. H. Wright; H. W. Wulsin; C. C. Young; V. Ziegler; W. Park; M. V. Purohit; R. M. White; J. R. Wilson; A. Randle-Conde; S. J. Sekula; M. Bellis; P. R. Burchat; T. S. Miyashita; E. M. T. Puccio; M. S. Alam; J. A. Ernst; R. Gorodeisky; N. Guttman; D. R. Peimer; A. Soffer; P. Lund; S. M. Spanier; J. L. Ritchie; A. M. Ruland; R. F. Schwitters; B. C. Wray; J. M. Izen; X. C. Lou; F. Bianchi; D. Gamba; S. Zambito; L. Lanceri; L. Vitale; F. Martinez-Vidal; A. Oyanguren; P. Villanueva-Perez; H. Ahmed; J. Albert; Sw. Banerjee; F. U. Bernlochner; H. H. F. Choi; G. J. King; R. Kowalewski; M. J. Lewczuk; I. M. Nugent; J. M. Roney; R. J. Sobie; N. Tasneem; T. J. Gershon; P. F. Harrison; T. E. Latham; H. R. Band; S. Dasu; Y. Pan; R. Prepost; S. L. Wu

2012-12-09T23:59:59.000Z

185

Global analysis of J/psi suppression in cold nuclear matter  

E-Print Network (OSTI)

Interpreting the J/psi suppression reported in nucleus--nucleus collisions at SPS and RHIC requires the quantitative understanding of cold nuclear matter effects, such as the inelastic rescattering of J/psi states in nuclei or the nuclear modification of parton densities. With respect to our former Glauber analysis, we include in the present work the new PHENIX d--Au measurements, and analyze as well all existing data using the EPS08 nuclear parton densities recently released. The largest suppression reported in the new PHENIX analysis leads in turn to an increase of sigma from 3.5 +/- 0.3 mb to 5.4 +/- 2.5 mb using proton PDF. The stronger x-dependence of the G^{A}/G^p ratio in EPS08 as compared to e.g. EKS98 shifts the cross section towards larger values at fixed target energies (x_2 ~ 0.1) while decreasing somehow the value extracted at RHIC (x_2 ~10^{-2}).

Tram, Vi-Nham; 10.1140/epjc/s10052-009-0864-y

2009-01-01T23:59:59.000Z

186

Commercial and institutional kitchen exhaust systems  

SciTech Connect

This article addresses design requirements for commercial and institutional kitchen exhaust systems. The topics of the article include design considerations, toilet exhaust, dishwasher exhaust, grease hood exhaust, codes and standards, design concerns, common problems, and fire suppression. A side bar on ducts, plenums and housings is also included.

McGuire, A.B. (McGuire Engineers, Chicago, IL (United States))

1993-05-01T23:59:59.000Z

187

Fission-suppressed fusion breeder on the thorium cycle and nonproliferation  

SciTech Connect

Fusion reactors could be designed to breed fissile material while suppressing fissioning thereby enhancing safety. The produced fuel could be used to startup and makeup fuel for fission reactors. Each fusion reaction can produce typically 0.6 fissile atoms and release about 1.6 times the 14 MeV neutron's energy in the blanket in the fission-suppressed design. This production rate is 2660 kg/1000 MW of fusion power for a year. The revenues would be doubled from such a plant by selling fuel at a price of 60/g and electricity at $0.05/kWh for Q=P{sub fusion}/P{sub input}=4. Fusion reactors could be designed to destroy fission wastes by transmutation and fissioning but this is not a natural use of fusion whereas it is a designed use of fission reactors. Fusion could supply makeup fuel to fission reactors that were dedicated to fissioning wastes with some of their neutrons. The design for safety and heat removal and other items is already accomplished with fission reactors. Whereas fusion reactors have geometry that compromises safety with a complex and thin wall separating the fusion zone from the blanket zone where wastes could be destroyed. Nonproliferation can be enhanced by mixing {sup 233}U with {sup 238}U. Also nonproliferation is enhanced in typical fission-suppressed designs by generating up to 0.05 {sup 232}U atoms for each {sup 233}U atom produced from thorium, about twice the IAEA standards of 'reduced protection' or 'self protection.' With 2.4%{sup 232}U, high explosive material is predicted to degrade owing to ionizing radiation after a little over 1/2 year and the heat rate is 77 W just after separation and climbs to over 600 W ten years later. The fissile material can be used to fuel most any fission reactor but is especially appropriate for molten salt reactors (MSR) also called liquid fluoride thorium reactors (LFTR) because of the molten fuel does not need hands on fabrication and handling.

Moir, R. W. [Vallecitos Molten Salt Research, 607 E. Vallecitos Rd., Livermore, CA 94550 925-447-8804 (United States)

2012-06-19T23:59:59.000Z

188

L3 Milestone Use Computational Model to Design and Optimize Welding Conditions to Suppress Helium  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

L3 Milestone L3 Milestone Use Computational Model to Design and Optimize Welding Conditions to Suppress Helium Cracking during Welding June 2012 Wei Zhang and Zhili Feng, ORNL Eric Willis, EPRI Background and Objectives Today, welding is widely used for repair, maintenance and upgrade of nuclear reactor components. As a critical technology to extend the service life of nuclear power plants beyond 60 years, weld technology must be further developed to meet new challenges associated with the aging of the plants, such as control and mitigation of the detrimental effects of weld residual stresses and repair of highly irradiated materials. To meet this goal, fundamental understanding of the "welding" effect is necessary for development of new and improved welding technologies.

189

Suppression of superconductivity by inhomogeneous chiral condensation in the NJL$_2$ model  

E-Print Network (OSTI)

We investigate the possibility of spatially inhomogeneous chiral and Cooper, or superconducting, pairing in the (1+1)-dimensional model by Chodos et al [ Phys. Rev. D61, 045011 (2000)] generalized to continuous chiral invariance. The consideration is performed at nonzero temperature $T$ and quark number chemical potential $\\mu$. It is shown in the framework of the Fulde--Ferrel inhomogeneity ansatz for chiral and Cooper condensates that if $G_1>G_2$, where $G_1$ and $G_2$ are the coupling constants in the quark-antiquark and diquark channels, then in the $(\\mu,T)$-phase diagram the superconducting phase is suppressed by spatially inhomogeneous chiral spiral phase with broken chiral symmetry. In contrast, in the above mentioned original Chodos et al model, where only the opportunity for homogeneous condensates were taken into account, the superconducting phase is realized at sufficiently high values of $\\mu$ at arbitrary values of $G_2>0$, including the interval $0

D. Ebert; T. G. Khunjua; K. G. Klimenko; V. Ch. Zhukovsky

2013-06-19T23:59:59.000Z

190

Noise suppression in reconstruction of low-Z target megavoltage cone-beam CT images  

Science Conference Proceedings (OSTI)

Purpose: To improve the image contrast-to-noise (CNR) ratio for low-Z target megavoltage cone-beam CT (MV CBCT) using a statistical projection noise suppression algorithm based on the penalized weighted least-squares (PWLS) criterion. Methods: Projection images of a contrast phantom, a CatPhan{sup Registered-Sign} 600 phantom and a head phantom were acquired by a Varian 2100EX LINAC with a low-Z (Al) target and low energy x-ray beam (2.5 MeV) at a low-dose level and at a high-dose level. The projections were then processed by minimizing the PWLS objective function. The weighted least square (WLS) term models the noise of measured projection and the penalty term enforces the smoothing constraints of the projection image. The variance of projection data was chosen as the weight for the PWLS objective function and it determined the contribution of each measurement. An anisotropic quadratic form penalty that incorporates the gradient information of projection image was used to preserve edges during noise reduction. Low-Z target MV CBCT images were reconstructed by the FDK algorithm after each projection was processed by the PWLS smoothing. Results: Noise in low-Z target MV CBCT images were greatly suppressed after the PWLS projection smoothing, without noticeable sacrifice of the spatial resolution. Depending on the choice of smoothing parameter, the CNR of selected regions of interest in the PWLS processed low-dose low-Z target MV CBCT image can be higher than the corresponding high-dose image.Conclusion: The CNR of low-Z target MV CBCT images was substantially improved by using PWLS projection smoothing. The PWLS projection smoothing algorithm allows the reconstruction of high contrast low-Z target MV CBCT image with a total dose of as low as 2.3 cGy.

Wang Jing; Robar, James; Guan Huaiqun [Department of Radiation Oncology, UT Southwestern Medical Center, Dallas, Texas 75235 (United States); Departments of Radiation Oncology and Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, B3H1V7 (Canada); Department of Radiation Oncology, Saint Vincent Hospital, Worcester, Massachusetts 01608 (United States)

2012-08-15T23:59:59.000Z

191

Arsenite suppression of involucrin transcription through AP1 promoter sites in cultured human keratinocytes  

SciTech Connect

While preserving keratinocyte proliferative ability, arsenite suppresses cellular differentiation markers by preventing utilization of AP1 transcriptional response elements. In present experiments, arsenite had a dramatic effect in electrophoretic mobility supershift analysis of proteins binding to an involucrin promoter AP1 response element. Without arsenite treatment, binding of JunB and Fra1 was readily detected in nuclear extracts from preconfluent cultures and was not detected a week after confluence, while c-Fos was detected only after confluence. By contrast, band shift of nuclear extracts from arsenite treated cultures showed only JunB and Fra1 binding in postconfluent as well as preconfluent cultures. Immunoblotting of cell extracts showed that arsenite treatment prevented the loss of Fra1 and the increase in c-Fos proteins that occurred after confluence in untreated cultures. Chromatin immunoprecipitation assays demonstrated substantial reduction of c-Fos and acetylated histone H3 at the proximal and distal AP1 response elements in the involucrin promoter and of coactivator p300 at the proximal element. Alteration of AP1 transcription factors was also examined in response to treatment with four metal containing compounds (chromate, vanadate, hemin, divalent cadmium) that also suppress involucrin transcription. These agents all influenced transcription at AP1 elements in a transcriptional reporter assay, but exhibited less effect than arsenite on binding activity assessed by mobility shift and chromatin immunoprecipitation and displayed variable effects on AP1 protein levels. These findings help trace a mechanism by which transcriptional effects of arsenite become manifest and help rationalize the unique action of arsenite, compared to the other agents, to preserve proliferative ability.

Sinitsyna, Nadezda N.; Reznikova, Tatiana V.; Qin Qin; Song, Hyukhwan; Phillips, Marjorie A. [Department of Environmental Toxicology, University of California, Davis, CA 95616-8588 (United States); Rice, Robert H., E-mail: rhrice@ucdavis.ed [Department of Environmental Toxicology, University of California, Davis, CA 95616-8588 (United States)

2010-03-15T23:59:59.000Z

192

Apparatus for suppressing formation of vortices in the coolant fluid of a nuclear reactor and associated method  

DOE Patents (OSTI)

An apparatus and method are provided for suppressing the formation of vortices in circulating coolant fluid of a nuclear reactor. A vortex-suppressing plate having a plurality of openings therein is suspended within the lower plenum of a reactor vessel below and generally parallel to the main core support of the reactor. The plate is positioned so as to intersect vortices which may form in the circulating reactor coolant fluid. The intersection of the plate with such vortices disrupts the rotational flow pattern of the vortices, thereby disrupting the formation thereof.

Ekeroth, Douglas E. (Delmont, PA); Garner, Daniel C. (Murrysville, PA); Hopkins, Ronald J. (Pensacola, FL); Land, John T. (Pensacola, FL)

1993-01-01T23:59:59.000Z

193

Ferromagnetism and suppression of metallic clusters in Fe implanted ZnO -- a phenomenon related to defects?  

SciTech Connect

We investigated ZnO(0001) single crystals annealed in high vacuum with respect to their magnetic properties and cluster formation tendency after implant-doping with Fe. While metallic Fe cluster formation is suppressed, no evidence for the relevance of the Fe magnetic moment to the observed ferromagnetism was found. The latter along with the cluster suppression is discussed with respect to defects in the ZnO host matrix, since the crystalline quality of the substrates was lowered due to the preparation as observed by x-ray diffraction.

Arenholz, Elke; Zhou, S.; Potzger, K.; Talut, G.; Reuther, H.; Kuepper, K.; Grenzer, J.; Xu, Q.; Mucklich, A.; Helm, M.; Fassbender, J.; Arenholz, E.

2008-03-12T23:59:59.000Z

194

Apparatus for suppressing formation of vortices in the coolant fluid of a nuclear reactor and associated method  

DOE Patents (OSTI)

An apparatus and method are provided for suppressing the formation of vortices in circulating coolant fluid of a nuclear reactor. A vortex-suppressing plate having a plurality of openings therein is suspended within the lower plenum of a reactor vessel below and generally parallel to the main core support of the reactor. The plate is positioned so as to intersect vortices which may form in the circulating reactor coolant fluid. The intersection of the plate with such vortices disrupts the rotational flow pattern of the vortices, thereby disrupting the formation thereof. 3 figures.

Ekeroth, D.E.; Garner, D.C.; Hopkins, R.J.; Land, J.T.

1993-11-30T23:59:59.000Z

195

Novel photonic phenomena in nanostructured material systems with applications and mid-range efficient insensitive wireless energy-transfer  

E-Print Network (OSTI)

A set of novel mechanisms for the manipulation of light in the nanoscale is provided. In the class of all-dielectric material systems, techniques for the suppression of radiative loss from incomplete-photonic-bandgap ...

Karalis, Aristeidis, 1978-

2008-01-01T23:59:59.000Z

196

Density-induced suppression of the alpha-particle condensate in nuclear matter and the structure of alpha cluster states in nuclei  

E-Print Network (OSTI)

At low densities, with decreasing temperatures, in symmetric nuclear matter alpha-particles are formed, which eventually give raise to a quantum condensate with four-nucleon alpha-like correlations (quartetting). Starting with a model of alpha-matter, where undistorted alpha particles interact via an effective interaction such as the Ali-Bodmer potential, the suppression of the condensate fraction at zero temperature with increasing density is considered. Using a Jastrow-Feenberg approach, it is found that the condensate fraction vanishes near saturation density. Additionally, the modification of the internal state of the alpha particle due to medium effects will further reduce the condensate. In finite systems, an enhancement of the S state wave function of the c.o.m. orbital of alpha particle motion is considered as the correspondence to the condensate. Wave functions have been constructed for self-conjugate 4n nuclei which describe the condensate state, but are fully antisymmetrized on the nucleonic level. These condensate-like cluster wave functions have been successfully applied to describe properties of low-density states near the n alpha threshold. Comparison with OCM calculations in 12C and 16O shows strong enhancement of the occupation of the S-state c.o.m. orbital of the alpha-particles. This enhancement is decreasing if the baryon density increases, similar to the density-induced suppression of the condensate fraction in alpha matter. The ground states of 12C and 16O show no enhancement at all, thus a quartetting condensate cannot be formed at saturation densities.

Y. Funaki; H. Horiuchi; G. Röpke; P. Schuck; A. Tohsaki; T. Yamada

2008-01-21T23:59:59.000Z

197

A robust kernel-based fuzzy c-means algorithm by incorporating suppressed and magnified membership for MRI image segmentation  

Science Conference Proceedings (OSTI)

Bias-corrected fuzzy c-means (BCFCM) algorithm with spatial information has been proven effective for image segmentation. It still lacks enough robustness to noise and outliers. Some kernel versions of FCM with spatial constraints, such as KFCM_S1, ... Keywords: Kernel-based FCM, fuzzy c-means (FCM), image segmentation, magic resonance image segmentation, spatial bias correction, suppressed membership

Hsu-Shen Tsai; Wen-Liang Hung; Miin-Shen Yang

2012-10-01T23:59:59.000Z

198

Suppression of energy-relaxation-induced decoherence in -type three-level SQUID flux qubits: A dark-state approach  

E-Print Network (OSTI)

Suppression of energy-relaxation-induced decoherence in -type three-level SQUID flux qubits: A dark) We report a theoretical investigation of decoherence induced by energy relaxation of the auxiliary level in the -type three-level SQUID flux qubits. We show that the energy-relaxation-induced decoherence

Chu, Shih-I

199

Physics of the Earth and Planetary Interiors 131 (2002) 225235 The implications of non-suppressed geomagnetic secular variation  

E-Print Network (OSTI)

-suppressed geomagnetic secular variation during the Permo-Carboniferous Reversed Superchron Pauline P. Kruivera, Cor G-equator. These red beds are reliable recorders of the geomagnetic field, because the NRM is carried by detrital deviation; Spectral analysis 1. Introduction Prominent features of the geomagnetic field are governed

Utrecht, Universiteit

200

Nanoscale strain-induced pair suppression as a vortex-pinning mechanism in high- temperature superconductors  

SciTech Connect

Boosting large-scale superconductor applications require nanostructured conductors with artificial pinning centres immobilizing quantized vortices at high temperature and magnetic fields. Here we demonstrate a highly effective mechanism of artificial pinning centers in solution-derived high-temperature superconductor nanocomposites through generation of nanostrained regions where Cooper pair formation is suppressed. The nanostrained regions identified from transmission electron microscopy devise a very high concentration of partial dislocations associated with intergrowths generated between the randomly oriented nanodots and the epitaxial YBa{sub 2}Cu{sub 3}O{sub 7} matrix. Consequently, an outstanding vortex-pinning enhancement correlated to the nanostrain is demonstrated for four types of randomly oriented nanodot, and a unique evolution towards an isotropic vortex-pinning behaviour, even in the effective anisotropy, is achieved as the nanostrain turns isotropic. We suggest a new vortex-pinning mechanism based on the bond-contraction pairing model, where pair formation is quenched under tensile strain, forming new and effective core-pinning regions.

Llordes, Anna [ICMAB, Barcelona, Spain; Palau, A. [ICMAB, Barcelona, Spain; Gazquez, J. [Oak Ridge National Laboratory (ORNL); Coll, M. [ICMAB, Barcelona, Spain; Vlad, R. [ICMAB, Barcelona, Spain; Pomar, A. [ICMAB, Barcelona, Spain; Arbiol, Jordi [ICMAB, Barcelona, Spain; Guzman, Roger [ICMAB, Barcelona, Spain; Ye, S. [ICMAB, Barcelona, Spain; Rouco, V [ICMAB, Barcelona, Spain; Sandiumenge, Felip [ICMAB, Barcelona, Spain; Ricart, Susagna [ICMAB, Barcelona, Spain; Puig, Teresa [ICMAB, Barcelona, Spain; Varela del Arco, Maria [ORNL; Chataigner, D. [CRISMAT, Caen, France; Vanacken, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Gutierrez, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Moschalkov, V. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Deutscher, G. [Tel Aviv University; Magen Dominguez, Cesar [ORNL; Obradors, Xavier [ICMAB, Barcelona, Spain

2012-01-01T23:59:59.000Z

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201

Suppression of Beam-Ion Instability in Electron Rings with Multi-Bunch Train Beam Fillings  

SciTech Connect

The ion-caused beam instability in the future light sources and electron damping rings can be serious due to the high beam current and ultra-small emittance of picometer level. One simple and effective mitigation of the instability is a multi-bunch train beam filling pattern which can significantly reduce the ion density near the beam, and therefore reduce the instability growth rate up to two orders of magnitude. The suppression is more effective for high intensity beams with low emittance. The distribution and the field of trapped ions are benchmarked to validate the model used in the paper. The wake field of ion-cloud and the beam-ion instability is investigated both analytically and numerically. We derived a simple formula for the build-up of ion-cloud and instability growth rate with the multi-bunch-train filling pattern. The ion instabilities in ILC damping ring, SuperKEKB and SPEAR3 are used to compare with our analyses. The analyses in this paper agree well with simulations.

Wang, L.; Cai, Y.; Raubenheimer, T.O.; /SLAC; Fukuma, H.; /KEK, Tsukuba

2011-08-18T23:59:59.000Z

202

Suppression of stimulated Raman scattering due to localization of electron plasma wave in laser beam filaments  

Science Conference Proceedings (OSTI)

The filamentation of the high power laser beam by taking off-axial contribution is investigated when ponderomotive nonlinearity is taken into account. The splitted profile of the laser beam is obtained due to uneven focusing of the off-axial rays. It is observed that the weak electron plasma wave (EPW) propagating in the z direction is nonlinearly coupled in the modified filamentary regions of the laser beam. The semianalytical solution of the nonlinear coupled EPW equation in the presence of laser beam filaments has been found and it is observed that the nonlinear coupling between these two waves leads to localization of the EPW. Stimulated Raman scattering (SRS) of this EPW is studied and backreflectivity has been calculated. Further, the localization of EPW affects the eigenfrequency and damping of plasma wave. As a result of this, mismatch and modified enhanced Landau damping lead to the disruption of SRS process and a substantial reduction in the backreflectivity. For the typical laser beam and plasma parameters with wavelength ({lambda}=1064 nm), power flux ({approx_equal}10{sup 16} W cm{sup -2}), and plasma density (n/n{sub cr})=0.2; the backreflectivity was found to be suppressed by a factor of around 20%.

Sharma, Prerana; Sharma, R. P. [Centre for Energy Studies, Indian Institute of Technology, New Delhi 110016 (India)

2009-03-15T23:59:59.000Z

203

Variation in Use of Androgen Suppression With External-Beam Radiotherapy for Nonmetastatic Prostate Cancer  

SciTech Connect

Purpose: To describe practice patterns associated with androgen suppression (AS) stratified by disease risk group in patients undergoing external-beam radiotherapy (EBRT) for localized prostate cancer. Methods and Materials: We identified 2,184 low-risk, 2,339 intermediate-risk, and 2,897 high-risk patients undergoing EBRT for nonmetastatic prostate cancer diagnosed between January 1, 2004, and December 31, 2005, in the linked Surveillance, Epidemiology, and End Results-Medicare database. We examined the association of patient, clinical, and demographic characteristics with AS use by multivariate logistic regression. Results: The proportions of patients receiving AS for low-risk, intermediate-risk, and high-risk prostate cancer were 32.2%, 56.3%, and 81.5%, respectively. AS use among men in the low-risk disease category varied widely, ranging from 13.6% in Detroit to 47.8% in Kentucky. We observed a significant decline in AS use between 2004 and 2005 within all three disease risk categories. Men aged {>=}75 years or with elevated comorbidity levels were more likely to receive AS. Conclusion: Our results identified apparent overuse and underuse of AS among men within the low-risk and high-risk disease categories, respectively. These results highlight the need for clinician and patient education regarding the appropriate use of AS. Practice patterns among intermediate-risk patients reflect the clinical heterogeneity of this population and underscore the need for better evidence to guide the treatment of these patients.

Swisher-McClure, Samuel, E-mail: Swisher-Mcclure@uphs.upenn.edu [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States); Pollack, Craig E. [Division of General Internal Medicine, Johns Hopkins University School of Medicine and Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (United States); Christodouleas, John P. [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States); Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA (United States); Guzzo, Thomas J. [Department of Surgery, Division of Urology, University of Pennsylvania, Philadelphia, PA (United States); Haas, Naomi B. [Department of Medicine, Division of Hematology and Oncology, University of Pennsylvania, Philadelphia, PA (United States); Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA (United States); Vapiwala, Neha [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States); Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA (United States); Bekelman, Justin E. [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States); Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA (United States); Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA (United States)

2012-05-01T23:59:59.000Z

204

Fusion versus Breakup: Observation of Large Fusion Suppression for 9 Be + 208 Pb  

E-Print Network (OSTI)

Complete fusion excitation functions for 9 Be + 208 Pb have been measured to high precision at near barrier energies. The experimental fusion barrier distribution extracted from these data allows reliable prediction of the expected complete fusion cross-sections. However, the measured cross-sections are only 68 % of those predicted. The large cross-sections observed for incomplete fusion products support the interpretation that this suppression of fusion is caused by 9Be breaking up into charged fragments before reaching the fusion 1 barrier. Implications for the fusion of radioactive nuclei are discussed. 2 Typeset using REVTEXThe recent availability of radioactive beams has made possible the study of the interactions and structure of exotic nuclei far from the line of stability. Unstable neutron–rich nuclei having very weakly bound neutrons exhibit characteristic features such as a neutron halo [1] extending to large radii, associated low–lying dipole modes, and a low energy threshold for breakup. These features may dramatically affect fusion and other reaction

M. Dasgupta; D. J. Hinde; R. D. Butt; R. M. Anjos; A. C. Berriman; N. Carlin; P. R. S. Gomes; C. R. Morton; J. O. Newton; A. Szanto De Toledo; K. Hagino

2008-01-01T23:59:59.000Z

205

Electron Quasielastic Scattering at High Energy from $^{56}$Fe, What Suppression?  

E-Print Network (OSTI)

Quasielastic electron scattering $(e,e')$ from $^{56}$Fe is calculated at large electron energies (2-4 GeV) and large three momentum transfer (0.5-1.5 GeV/c). We use a relativistic mean-field single particle model for the bound and continuum nucleon wavefunctions based on the $\\sigma-\\omega$ model and we include the effects of electron Coulomb distortion in the calculation. The calculations are compared to high energy data from SLAC and more recent data from Jefferson Laboratory, particularly for kinematics where the energy transfer is less than 500 to 600 MeV and the quasielastic process is expected to dominate the cross section. The effects of the predicted weakening of the strong scalar and vector potentials of the $\\sigma-\\omega$ model at high energy are investigated. Possible evidence for `longitudinal suppression' or modifications of nucleon form factors in the medium is considered, but neither is necessary to explain the quasielastic data for four momentum transfers less than 1 (GeV/c)$^2$.

K. S. Kim; L. E. Wright

2002-08-21T23:59:59.000Z

206

Proton Radiotherapy for Prostate Cancer Is Not Associated With Post-Treatment Testosterone Suppression  

SciTech Connect

Purpose: Three independent studies of photon (x-ray) radiotherapy (RT) for prostate cancer have demonstrated evidence of testosterone suppression after treatment. The present study was undertaken to determine whether this would also be the case with conformal protons. Methods and Materials: Between August 2006 and October 2007, 171 patients with low- and intermediate-risk prostate cancer were enrolled and underwent treatment according to University of Florida Proton Therapy Institute institutional review board-approved PR01 and PR02 protocols. Of the 171 patients, 18 were excluded because they had received androgen deprivation therapy either before (n = 17) or after (n = 1) RT. The pretreatment serum testosterone level was available for 150 of the remaining 153 patients. These 150 patients were included in the present study. The post-treatment levels were compared with the pretreatment levels. Results: The median baseline pretreatment serum testosterone level was 357.9 ng/dL. The median post-treatment testosterone value was 375.5 ng/dL at treatment completion (p = .1935) and 369.9 ng/dL (p = .1336), 348.7 ng/dL (p = .7317), 353.4 ng/dL (p = .6996), and 340.9 ng/dL (p = .1669) at 6, 12, 18, and 24 months after proton therapy, respectively. Conclusions: Conformal proton therapy to the prostate, as delivered using University of Florida Proton Therapy Institute PR01 and PR02 protocols, did not appear to significantly affect the serum testosterone levels within 24 months after RT.

Nichols, R. Charles, E-mail: rnichols@floridaproton.org [Department of Radiation Oncology, University of Florida, Gainesville, FL (United States); University of Florida Proton Therapy Institute, Jacksonville, FL (United States); Morris, Christopher G.; Hoppe, Bradford S.; Henderson, Randal H.; Marcus, Robert B.; Mendenhall, William M.; Li Zuofeng [Department of Radiation Oncology, University of Florida, Gainesville, FL (United States); University of Florida Proton Therapy Institute, Jacksonville, FL (United States); Williams, Christopher R.; Costa, Joseph A. [Division of Urology, University of Florida Shands Hospital, Jacksonville, FL (United States); Mendenhall, Nancy P. [Department of Radiation Oncology, University of Florida, Gainesville, FL (United States); University of Florida Proton Therapy Institute, Jacksonville, FL (United States)

2012-03-01T23:59:59.000Z

207

Ghrelin Suppression and Fat Loss after Left Gastric Artery Embolization in Canine Model  

Science Conference Proceedings (OSTI)

Purpose: To evaluate the effects of left gastric artery embolization (LGAE) on plasma ghrelin levels, abdominal fat, and body weight in beagles. Methods: The institutional animal care and use committee approved this study. Fifteen healthy adult beagles (12 male and three female animals) were randomly divided into three experimental groups: LGAE was proceeded with mixed emulsion of bleomycin A{sub 5} hydrochloride and lipiodol (group A), and polyvinyl alcohol particles (group B). Transcatheter saline injections in the left gastric artery were performed as a control. Weight and fasting plasma ghrelin levels were obtained at baseline and at weekly intervals for 8 weeks after the procedure in all animals. All animals were scanned and measured by multidetector computed tomography at baseline and at week 8 for evaluation of abdominal fat. Results: In LGAE-treated animals, plasma ghrelin and body weight significantly decreased compared to control animals (group A: P = 0.007 and P = 0.000; group B: P = 0.004 and P = 0.000, respectively). Subcutaneous fat size was also significantly reduced (P = 0.011 and P = 0.027 for groups A and B, respectively). The decreasing percentage in ghrelin levels at week 6 (peak of recovery) of LGAE-treated animals were negatively correlated with the size of area supplied by left gastric artery (r = -0.693, P = 0.026). Conclusion: LGAE could suppress the plasma concentration of ghrelin, which results in subcutaneous fat size reduction and weight loss. Compensatory ghrelin production might occur in the remnant gastric fundus after LGAE.

Bawudun, Dilmurat [Xinjiang Medical University, Department of Interventional Radiology, First Affiliated Hospital (China); Xing Yan; Liu Wenya, E-mail: wenyaliu2002@hotmail.com; Huang Yujie [Xinjiang Medical University, Imaging Center, First Affiliated Hospital (China); Ren Weixin [Xinjiang Medical University, Department of Interventional Radiology, First Affiliated Hospital (China); Ma Mei [Xinjiang Medical University, Animal Research Center, First Affiliated Hospital (China); Xu Xiaodong [Xinjiang Medical University, Department of Interventional Radiology, First Affiliated Hospital (China); Teng Gaojun [Southeast University, Department of Radiology, Zhong-da Hospital (China)

2012-12-15T23:59:59.000Z

208

KUB5/HERA: a dual acting protein that suppresses genomic instability and promotes DNA repair after low dose IR exposure  

NLE Websites -- All DOE Office Websites (Extended Search)

KUB5/HERA: a dual acting protein that suppresses genomic instability and KUB5/HERA: a dual acting protein that suppresses genomic instability and promotes DNA repair after low dose IR exposure Julio C. Morales 1 , Amy Rommel 1 , Konstantin Leskov 2 , Walter M. Hittelman 3 , David A. Boothman 1# 1 Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. 2 Department of Radiation Oncology, Case Western Reserve University, Cleveland, OH 44106, USA. 3 Department of Experimental Therapeutics, M.D. Anderson Cancer Center, Houston, TX 77030, USA. # To whom correspondence should be addressed. E-mail: David.Boothman@utsouthwestern.edu Eukaryotic cells can respond to DNA double strand breaks created by low doses of IR by activating homologous recombination (HR) or non-homologous end- joining (NHEJ) pathways to repair DNA. A yeast two-hybrid screen using Ku70 as

209

Coulomb suppression in the low-energy p-p elastic scattering via the Trojan Horse Method  

Science Conference Proceedings (OSTI)

We present here an important test of the main feature of the Trojan Horse Method (THM), namely the suppression of Coulomb effects in the entrance channel due to off-energy-shell effects. This is done by measuring the THM p-p elastic scattering via the p+d{yields}p+p+n reaction at 4.7 and 5 MeV, corresponding to a p-p relative energy ranging from 80 to 670 keV. In contrast to the on-energy-shell (OES) case, the extracted p-p cross section does not exhibit the Coulomb-nuclear interference minimum due to the suppression of the Coulomb amplitude. This is confirmed by the half-off-energy shell (HOES) calculations and strengthened by the agreement with the calculated OES nuclear cross sections.

Tumino, A. [Laboratori Nazionali del Sud-INFN, via S. Sofia 62, 95123 Catania, Italy and Dipartimento di Metodologie Fisiche e Chimiche per l'Ingegneria, Universita di Catania (Italy); Universita degli Studi di Enna 'Kore', Enna (Italy); Spitaleri, C.; Rapisarda, G. G.; Cherubini, S.; Crucilla, V.; Gulino, M.; La Cognata, M.; Lamia, L.; Pizzone, R. G.; Puglia, S. M. R.; Romano, S.; Sergi, M. L. [Laboratori Nazionali del Sud-INFN, via S. Sofia 62, 95123 Catania, Italy and Dipartimento di Metodologie Fisiche e Chimiche per l'Ingegneria, Universita di Catania (Italy); Mukhamedzhanov, A. [Cyclotron Institute, Texas A and M University, College Station (United States); Campajola, L. [Dipartimento di Scienze Fisiche-Universita Federico II, Napoli (Italy); Elekes, Z.; Fueloep, Zs.; Gyuerky, G.; Kiss, G. G.; Somorjai, E. [ATOMKI-Debrecen (Hungary); Gialanella, L. [INFN-Sezione di Napoli (Italy)

2010-11-24T23:59:59.000Z

210

System to control contamination during retrieval of buried TRU waste  

DOE Patents (OSTI)

A system is described to control contamination during the retrieval of hazardous waste comprising an outer containment building, an inner containment building, within the outer containment building, an electrostatic radioactive particle recovery unit connected to and in communication with the inner and outer containment buildings, and a contaminate suppression system including a moisture control subsystem, and a rapid monitoring system having the ability to monitor conditions in the inner and outer containment buildings.

Menkhaus, D.E.; Loomis, G.G.; Mullen, C.K.; Scott, D.W.; Feldman, E.M.; Meyer, L.C.

1993-04-20T23:59:59.000Z

211

System to control contamination during retrieval of buried TRU waste  

DOE Patents (OSTI)

A system to control contamination during the retrieval of hazardous waste comprising an outer containment building, an inner containment building, within the outer containment building, an electrostatic radioactive particle recovery unit connected to and in communication with the inner and outer containment buildings, and a contaminate suppression system including a moisture control subsystem, and a rapid monitoring system having the ability to monitor conditions in the inner and outer containment buildings.

Menkhaus, Daniel E. (Idaho Falls, ID); Loomis, Guy G. (Idaho Falls, ID); Mullen, Carlan K. (Idaho Falls, ID); Scott, Donald W. (Idaho Falls, ID); Feldman, Edgar M. (Idaho Falls, ID); Meyer, Leroy C. (Idaho Falls, ID)

1993-01-01T23:59:59.000Z

212

Feedback suppression of the internal m = 1 helical mode in a tokamak  

SciTech Connect

A stabilization system that measures the boundary of the plasma filament and controls the perturbation of the magnetic field outside the plasma is discussed. (AIP)

Mikhailovskii, A.B.

1979-03-01T23:59:59.000Z

213

Suppression of spurious mode oscillation in mega-watt 77-GHz gyrotron as a high quality probe beam source for the collective Thomson scattering in LHD  

Science Conference Proceedings (OSTI)

Collective Thomson scattering (CTS) diagnostic requires a strong probing beam to diagnose a bulk and fast ion distribution function in fusion plasmas. A mega-watt gyrotron for electron cyclotron resonance heating is used as a probing beam in the large helical device. Spurious mode oscillations are often observed during the turning on/off phase of the modulation. The frequency spectra of the 77-GHz gyrotron output power have been measured, and then one of the spurious modes, which interferes with the CTS receiver system, is identified as the TE{sub 17,6} mode at the frequency of 74.7 GHz. The mode competition calculation indicates that the increase of the magnetic field strength at the gyrotron resonator can avoid such a spurious mode and excite only the main TE{sub 18,6} mode. The spurious radiation at the 74.7 GHz is experimentally demonstrated to be suppressed in the stronger magnetic field than that optimized for the high-power operation.

Ogasawara, S. [Department of Energy Engineering and Science, Nagoya University, Nagoya 464-8463 (Japan); Kubo, S. [Department of Energy Engineering and Science, Nagoya University, Nagoya 464-8463 (Japan); National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi 509-5292 (Japan); Nishiura, M.; Tanaka, K.; Shimozuma, T.; Yoshimura, Y.; Igami, H.; Takahashi, H.; Ito, S.; Takita, Y.; Kobayashi, S.; Mizuno, Y.; Okada, K. [National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi 509-5292 (Japan); Tatematsu, Y.; Saito, T. [Research Center for Development of Far-Infrared Region, University of Fukui, Fukui 910-8507 (Japan); Minami, R.; Kariya, T.; Imai, T. [Plasma Research Center, University of Tsukuba, Tsukuba 305-8577 (Japan)

2012-10-15T23:59:59.000Z

214

Explosive destruction system for disposal of chemical munitions  

DOE Patents (OSTI)

An explosive destruction system and method for safely destroying explosively configured chemical munitions. The system comprises a sealable, gas-tight explosive containment vessel, a fragment suppression system positioned in said vessel, and shaped charge means for accessing the interior of the munition when the munition is placed within the vessel and fragment suppression system. Also provided is a means for treatment and neutralization of the munition's chemical fills, and means for heating and agitating the contents of the vessel. The system is portable, rapidly deployable and provides the capability of explosively destroying and detoxifying chemical munitions within a gas-tight enclosure so that there is no venting of toxic or hazardous chemicals during detonation.

Tschritter, Kenneth L. (Livermore, CA); Haroldsen, Brent L. (Manteca, CA); Shepodd, Timothy J. (Livermore, CA); Stofleth, Jerome H. (Albuquerque, NM); DiBerardo, Raymond A. (Baltimore, MD)

2005-04-19T23:59:59.000Z

215

Explosive destruction system for disposal of chemical munitions  

SciTech Connect

An explosive destruction system and method for safely destroying explosively configured chemical munitions. The system comprises a sealable, gas-tight explosive containment vessel, a fragment suppression system positioned in said vessel, and shaped charge means for accessing the interior of the munition when the munition is placed within the vessel and fragment suppression system. Also provided is a means for treatment and neutralization of the munition's chemical fills, and means for heating and agitating the contents of the vessel. The system is portable, rapidly deployable and provides the capability of explosively destroying and detoxifying chemical munitions within a gas-tight enclosure so that there is no venting of toxic or hazardous chemicals during detonation.

Tschritter, Kenneth L. (Livermore, CA); Haroldsen, Brent L. (Manteca, CA); Shepodd, Timothy J. (Livermore, CA); Stofleth, Jerome H. (Albuquerque, NM); DiBerardo, Raymond A. (Baltimore, MD)

2005-04-19T23:59:59.000Z

216

Dietary Fats and Risk of Chronic DiseaseCh 10 Suppression of Leukotriene B4 Generation by ex vivo Neutrophils Isolated from Asthma Patients  

Science Conference Proceedings (OSTI)

Dietary Fats and Risk of Chronic Disease Ch 10 Suppression of Leukotriene B4 Generation by ex vivo Neutrophils Isolated from Asthma Patients Health Nutrition Biochemistry eChapters Health - Nutrition - Biochemistry Press ...

217

Macroscopic quantum behaviour of periodic quantum systems  

E-Print Network (OSTI)

In this paper we introduce a simple procedure for computing the macroscopic quantum behaviour of periodic quantum systems in the high energy regime. The macroscopic quantum coherence is ascribed to a one-particle state, not to a condensate of a many-particle system; and we are referring to a system of high energy but with few degrees of freedom. We show that, in the first order of approximation, the quantum probability distributions converge to its classical counterparts in a clear fashion, and that the interference effects are strongly suppressed. The harmonic oscillator provides a testing ground for these ideas and yields excellent results.

A. Martín-Ruiz; J. Bernal; Adrián Carbajal-Domínguez

2013-09-02T23:59:59.000Z

218

Cellular consequences in the suppression of antibody response by the antigen-specific T-cell factor.,]. Exp. Med  

E-Print Network (OSTI)

Previous studies from our laboratory indicated that a soluble factor extracted from carrier-primed suppressor T cells (TsF) ~ inhibits the in vitro secondary antibody response against a hapten coupled to the same carrier. The factor was found to possess determinants controlled by a locus (Ia-4) mapped in the I-J subregion of the mouse H-2 histocompatibility complex (1). Unlike other antigen-specific TsF, there has been shown a strict genetic restriction in that TsF derived from one strain of animals can suppress the response of only H-2 histocompatible strains (2, 3). Furthermore, TsF was shown to be absorbable by splenic T cells, but not by B cells or macrophages of the same H-2 haplotype origin. Such T cells, which were assumed to be the direct targets of TsF, were adherent to a tightly packed nylon-wool column, but were definitely killed by anti-Thy-I antiserum (2). Thus, the suppression of the antibody response by TsF is mediated by an interaction between the TsF and the acceptor site on the target cells. The most reasonable explanation is that such an acceptor site is controlled by a gene closely linked to that for the TsF within the same H-2 complex, as there have been no exceptional cases in which H-2 histoincompatible TsF can initiate the specific suppression. Because little is known about the consequences of this initial interaction between TsF and acceptor T cells, we have performed a series of experiments in which subsequent cellular events after the TsF-acceptor interaction were studied. In this communication, we wish to report that the final suppression of antibody response was, in fact, achieved via the intermediary type of the acceptor T cells. Some properties and the mode of action of this cell type are described. Materials and Methods Antigens. Keyhole limpet hemoeyanin (KLH) was purchased from Calbiochem-Behring

Taniguchi; Takeshi Tokuhisa

1980-01-01T23:59:59.000Z

219

Interference Suppression Consisting of Pre-distortion Filtering and Selective Transmit Diversity  

Science Conference Proceedings (OSTI)

In this paper we present and evaluate a pre-distortion (PD) scheme for the downlink of Wideband-code division multiple access (W-CDMA) systems considering a Rake in the receiver in order to exploit multipath diversity. Its performance is compared with ... Keywords: Downlink transmission, Frequency-selective channels, Pre-processing, Selective transmit diversity, W-CDMA

Mário Marques Silva; Américo M. Correia; Rui Dinis

2008-10-01T23:59:59.000Z

220

Negative heat capacity at phase-separation in macroscopic systems  

E-Print Network (OSTI)

Systems with long-range as well with short-range interactions should necessarily have a convex entropy S(E) at proper phase transitions of first order, i.e. when a separation of phases occurs. Here the microcanonical heat capacity c(E)= -\\frac{(\\partial S/\\partial E)^2}{\\partial^2S/\\partial E^2} is negative. This should be observable even in macroscopic systems when energy fluctuations with the surrounding world can be sufficiently suppressed.

D. H. E. Gross

2005-08-19T23:59:59.000Z

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221

Cold Vacuum Drying facility fire protection system design description (SYS 24)  

SciTech Connect

This document describes the Cold Vacuum Drying Facility (CVDF) fire protection system (FPS). The FPS provides fire detection, suppression, and loss limitation for the CVDF structure, personnel, and in-process spent nuclear fuel. The system provides, along with supporting interfacing systems, detection, alarm, and activation instrumentation and controls, distributive piping system, isolation valves, and materials and controls to limit combustibles and the associated fire loadings.

PITKOFF, C.C.

1999-07-06T23:59:59.000Z

222

A Fusing Switch for Fault Suppression in the SNS High Voltage Converter Modulators  

DOE Green Energy (OSTI)

The High Voltage Converter Modulators (HVCMs) at the Spallation Neutron Source (SNS) have operated in excess of a combined 250,000 hours. Performance and reliability improvements to the HVCM are ongoing to increase modulator availability as accelerator system demands increase. There is a relatively large amount of energy storage in the HVCMs, {approx}180 kJ. This energy has the potential to dump into unsuppressed faults, cause damage, and increase the time to repair. The 'fusing switch' concept involves isolation of this stored energy from the location of the most common faults. This paper introduces this concept and its application to the HVCMs.

Kemp, Mark A.; Burkhart, Craig; Nguyen, Minh N.; /SLAC; Anderson, David E.; /Oak Ridge

2009-08-03T23:59:59.000Z

223

Heat Capacity Evidence for the Suppression of Skyrmions at Large Zeeman Energy  

E-Print Network (OSTI)

Measurements on a multilayer two-dimensional electron system (2DES) near Landau level filling ?=1 reveal the disappearance of the nuclear spin contribution to the heat capacity as the ratio ˜g between the Zeeman and Coulomb energies exceeds a critical value ˜gc?0.04. This disappearance suggests the vanishing of the Skyrmion-mediated coupling between the lattice and the nuclear spins as the spin excitations of the 2DES make a transition from Skyrmions to single spin-flips above ˜gc. Our experimental ˜gc is smaller than the calculated ˜gc=0.054 for an ideal 2DES; we discuss possible origins of this discrepancy. PACS numbers: 73.20.Dx, 73.40.Hm, 65.40.-f Typeset using REVTEX 1 The ground state and spin excitations of a two-dimensional electron system (2DES) near Landau level (LL) filling ?=1 have attracted much recent interest [1–9]. At this filling, the Coulomb exchange energy plays a dominant role, leading to a substantially larger quantum Hall effect (QHE) excitation gap than the expected single-particle Zeeman splitting [1].

S. Melinte; E. Grivei; V. Bayot; M. Shayegan

2008-01-01T23:59:59.000Z

224

Suppression of bottomonia states in finite size quark gluon plasma in PbPb collisions at Large Hadron Collider  

E-Print Network (OSTI)

The bottomonium states due to their varying binding energies dissolve at different temperatures and thus their nuclear modification factors and relative yields have potential to map the properties of Quark Gluon Plasma (QGP). We estimate the suppression of bottomonia states due to color screening in an expanding QGP of finite lifetime and size with the conditions relevant for PbPb collisions at LHC. The properties of $\\Upsilon$ states and recent results on their dissociation temperatures have been used as ingredient in the study. The nuclear modification factors and the ratios of yields of $\\Upsilon$ states are then obtained as a function of transverse momentum and centrality. We compare our theoretical calculations with the bottomonia yields measured with CMS in PbPb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV. The model calculations explain the data very well.

A. Abdulsalam; Prashant Shukla

2012-10-29T23:59:59.000Z

225

Suppression of the stellar enhancement factor and the reaction {sup 85}Rb(p,n){sup 85}Sr  

SciTech Connect

It is shown that a Coulomb suppression of the stellar enhancement factor occurs in many endothermic reactions at and far from stability. Contrary to common assumptions, reaction measurements for astrophysics with minimal impact of stellar enhancement should be preferably performed for those reactions instead of their reverses, despite of their negative Q value. As a demonstration, the cross section of the astrophysically relevant {sup 85}Rb(p,n){sup 85}Sr reaction has been measured by activation between 2.16{<=}E{sub c.m.}{<=}3.96 MeV and the astrophysical reaction rates at p process temperatures for (p,n) as well as (n,p) are directly inferred from the data. Additionally, our results confirm a previously derived modification of a global optical proton potential. The presented arguments are also relevant for other {alpha}- and proton-induced reactions in the p, rp, and {nu}p processes.

Rauscher, T. [Department of Physics, University of Basel, CH-4056 Basel (Switzerland); Kiss, G. G.; Gyuerky, Gy.; Simon, A.; Fueloep, Zs.; Somorjai, E. [Institute of Nuclear Research (ATOMKI), H-4001 Debrecen, P. O. Box 51 (Hungary)

2009-09-15T23:59:59.000Z

226

Suppression of Upsilon Production in d+Au and Au+Au Collisions at sqrt(s_NN) = 200 GeV  

E-Print Network (OSTI)

We report measurements of Upsilon meson production in p+p, d+Au, and Au+Au collisions using the STAR detector at RHIC. We compare the Upsilon yield to the measured cross section in p+p collisions in order to quantify any modifications of the yield in cold nuclear matter using d+Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p+p measurement is based on three times the statistics of our previous result. We obtain a nuclear modification factor for Upsilon(1S+2S+3S) in the rapidity range |y|<1 in d+Au collisions of R_dAu = 0.67 +/- 0.12 (stat.) +/- 0.04 (sys.) +/- 0.08 (pp sys.). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au+Au collisions, we measure a nuclear modification factor of R_AA=0.36 +/- 0.09 (stat.) +/- 0.01 (sys.) +/- 0.04 (pp sys.), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state Upsilon mesons in Au+Au collisions. The additional suppression in Au+Au is consistent with the level expected in model calculations that include the presence of a hot, deconfined Quark-Gluon Plasma. However, understanding the suppression seen in d+Au is still needed before any definitive statements about the nature of the suppression in Au+Au can be made.

STAR Collaboration; L. Adamczyk; J. K. Adkins; G. Agakishiev; M. M. Aggarwal; Z. Ahammed; I. Alekseev; J. Alford; C. D. Anson; A. Aparin; D. Arkhipkin; E. C. Aschenauer; G. S. Averichev; A. Banerjee; D. R. Beavis; R. Bellwied; A. Bhasin; A. K. Bhati; P. Bhattarai; H. Bichsel; J. Bielcik; J. Bielcikova; L. C. Bland; I. G. Bordyuzhin; W. Borowski; J. Bouchet; A. V. Brandin; S. G. Brovko; S. Bültmann; I. Bunzarov; T. P. Burton; J. Butterworth; H. Caines; M. Calderón de la Barca Sánchez; D. Cebra; R. Cendejas; M. C. Cervantes; P. Chaloupka; Z. Chang; S. Chattopadhyay; H. F. Chen; J. H. Chen; L. Chen; J. Cheng; M. Cherney; A. Chikanian; W. Christie; J. Chwastowski; M. J. M. Codrington; G. Contin; J. G. Cramer; H. J. Crawford; X. Cui; S. Das; A. Davila Leyva; L. C. De Silva; R. R. Debbe; T. G. Dedovich; J. Deng; A. A. Derevschikov; R. Derradi de Souza; S. Dhamija; B. di Ruzza; L. Didenko; C. Dilks; F. Ding; P. Djawotho; X. Dong; J. L. Drachenberg; J. E. Draper; C. M. Du; L. E. Dunkelberger; J. C. Dunlop; L. G. Efimov; J. Engelage; K. S. Engle; G. Eppley; L. Eun; O. Evdokimov; R. Fatemi; S. Fazio; J. Fedorisin; P. Filip; E. Finch; Y. Fisyak; C. E. Flores; C. A. Gagliardi; D. R. Gangadharan; D. Garand; F. Geurts; A. Gibson; M. Girard; S. Gliske; L. Greiner; D. Grosnick; Y. Guo; A. Gupta; S. Gupta; W. Guryn; B. Haag; O. Hajkova; A. Hamed; L-X. Han; R. Haque; J. W. Harris; S. Heppelmann; K. Hill; A. Hirsch; G. W. Hoffmann; D. J. Hofman; S. Horvat; B. Huang; H. Z. Huang; X. Huang; P. Huck; T. J. Humanic; G. Igo; W. W. Jacobs; H. Jang; E. G. Judd; S. Kabana; D. Kalinkin; K. Kang; K. Kauder; H. W. Ke; D. Keane; A. Kechechyan; A. Kesich; Z. H. Khan; D. P. Kikola; I. Kisel; A. Kisiel; D. D. Koetke; T. Kollegger; J. Konzer; I. Koralt; L. Kotchenda; P. Kravtsov; K. Krueger; I. Kulakov; L. Kumar; R. A. Kycia; M. A. C. Lamont; J. M. Landgraf; K. D. Landry; J. Lauret; A. Lebedev; R. Lednicky; J. H. Lee; M. J. LeVine; C. Li; W. Li; X. Li; X. Li; Y. Li; Z. M. Li; L. M. Lima; M. A. Lisa; F. Liu; T. Ljubicic; W. J. Llope; M. Lomnitz; R. S. Longacre; X. Luo; G. L. Ma; Y. G. Ma; D. M. M. D. Madagodagettige Don; D. P. Mahapatra; R. Majka; S. Margetis; C. Markert; H. Masui; H. S. Matis; D. McDonald; T. S. McShane; N. G. Minaev; S. Mioduszewski; B. Mohanty; M. M. Mondal; D. A. Morozov; M. G. Munhoz; M. K. Mustafa; B. K. Nandi; Md. Nasim; T. K. Nayak; J. M. Nelson; G. Nigmatkulov; L. V. Nogach; S. Y. Noh; J. Novak; S. B. Nurushev; G. Odyniec; A. Ogawa; K. Oh; A. Ohlson; V. Okorokov; E. W. Oldag; R. A. N. Oliveira; M. Pachr; B. S. Page; S. K. Pal; Y. X. Pan; Y. Pandit; Y. Panebratsev; T. Pawlak; B. Pawlik; H. Pei; C. Perkins; W. Peryt; A. Peterson; P. Pile; M. Planinic; J. Pluta; N. Poljak; J. Porter; A. M. Poskanzer; N. K. Pruthi; M. Przybycien; P. R. Pujahari; J. Putschke; H. Qiu; A. Quintero; S. Ramachandran; R. Raniwala; S. Raniwala; R. L. Ray; C. K. Riley; H. G. Ritter; J. B. Roberts; O. V. Rogachevskiy; J. L. Romero; J. F. Ross; A. Roy; L. Ruan; J. Rusnak; N. R. Sahoo; P. K. Sahu; I. Sakrejda; S. Salur; J. Sandweiss; E. Sangaline; A. Sarkar; J. Schambach; R. P. Scharenberg; A. M. Schmah; W. B. Schmidke; N. Schmitz; J. Seger; P. Seyboth; N. Shah; E. Shahaliev; P. V. Shanmuganathan; M. Shao; B. Sharma; W. Q. Shen; S. S. Shi; Q. Y. Shou; E. P. Sichtermann; R. N. Singaraju; M. J. Skoby; D. Smirnov; N. Smirnov; D. Solanki; P. Sorensen; U. G. deSouza; H. M. Spinka; B. Srivastava; T. D. S. Stanislaus; J. R. Stevens; R. Stock; M. Strikhanov; B. Stringfellow; A. A. P. Suaide; M. Sumbera; X. Sun; X. M. Sun; Y. Sun; Z. Sun; B. Surrow; D. N. Svirida; T. J. M. Symons; A. Szanto de Toledo; M. A. Szelezniak; J. Takahashi; A. H. Tang; Z. Tang; T. Tarnowsky; J. H. Thomas; A. R. Timmins; D. Tlusty; M. Tokarev; S. Trentalange; R. E. Tribble; P. Tribedy; B. A. Trzeciak; O. D. Tsai; J. Turnau; T. Ullrich; D. G. Underwood; G. Van Buren; G. van Nieuwenhuizen; J. A. Vanfossen, Jr.; R. Varma; G. M. S. Vasconcelos; A. N. Vasiliev; R. Vertesi; F. Videbæk; Y. P. Viyogi; S. Vokal; A. Vossen; M. Wada; F. Wang; G. Wang; H. Wang; J. S. Wang; X. L. Wang; Y. Wang; Y. Wang; G. Webb; J. C. Webb; G. D. Westfall; H. Wieman; G. Wimsatt; S. W. Wissink; R. Witt; Y. F. Wu; Z. Xiao; W. Xie; K. Xin; H. Xu; J. Xu; N. Xu; Q. H. Xu; Y. Xu; Z. Xu; W. Yan; C. Yang; Y. Yang; Y. Yang; Z. Ye; P. Yepes; L. Yi; K. Yip; I-K. Yoo; N. Yu; Y. Zawisza; H. Zbroszczyk; W. Zha; J. B. Zhang; J. L. Zhang; S. Zhang; X. P. Zhang; Y. Zhang; Z. P. Zhang; F. Zhao; J. Zhao; C. Zhong; X. Zhu; Y. H. Zhu; Y. Zoulkarneeva; M. Zyzak

2013-12-12T23:59:59.000Z

227

Electrical current suppression in Pd-doped vanadium pentoxide nanowires caused by reduction in PdO due to hydrogen exposure  

SciTech Connect

Pd nanoparticle-doped vanadium pentoxide nanowires (Pd-VONs) were synthesized. Electrical current suppression was observed when the Pd-VON was exposed to hydrogen gas, which cannot be explained by the work function changes mentioned in previous report such as Pd-doped carbon nanotubes and SnO{sub 2} nanowires. Using the x-ray photoelectron spectroscopy, we found that the reduction in PdO due to hydrogen exposure plays an important role in the current suppression of the Pd-VON.

Kim, Byung Hoon; Oh, Soon-Young; Yu, Han Young; Yun, Yong Ju; Kim, Yark Yeon; Hong, Won G. [Electronics and Telecommunications Research Institute (ETRI), Daejeon 305-700 (Korea, Republic of); Jeong, Hu Young; Lee, Jeong Yong [Department of Materials Science and Engineering, KAIST, Daejeon 305-701 (Korea, Republic of); Kim, Hae Jin [Korea Basic Science Institute, Daejeon 305-333 (Korea, Republic of)

2010-04-19T23:59:59.000Z

228

Host suppression and bioinformatics for sequence-based characterization of unknown pathogens.  

SciTech Connect

Bioweapons and emerging infectious diseases pose formidable and growing threats to our national security. Rapid advances in biotechnology and the increasing efficiency of global transportation networks virtually guarantee that the United States will face potentially devastating infectious disease outbreaks caused by novel ('unknown') pathogens either intentionally or accidentally introduced into the population. Unfortunately, our nation's biodefense and public health infrastructure is primarily designed to handle previously characterized ('known') pathogens. While modern DNA assays can identify known pathogens quickly, identifying unknown pathogens currently depends upon slow, classical microbiological methods of isolation and culture that can take weeks to produce actionable information. In many scenarios that delay would be costly, in terms of casualties and economic damage; indeed, it can mean the difference between a manageable public health incident and a full-blown epidemic. To close this gap in our nation's biodefense capability, we will develop, validate, and optimize a system to extract nucleic acids from unknown pathogens present in clinical samples drawn from infected patients. This system will extract nucleic acids from a clinical sample, amplify pathogen and specific host response nucleic acid sequences. These sequences will then be suitable for ultra-high-throughput sequencing (UHTS) carried out by a third party. The data generated from UHTS will then be processed through a new data assimilation and Bioinformatic analysis pipeline that will allow us to characterize an unknown pathogen in hours to days instead of weeks to months. Our methods will require no a priori knowledge of the pathogen, and no isolation or culturing; therefore it will circumvent many of the major roadblocks confronting a clinical microbiologist or virologist when presented with an unknown or engineered pathogen.

Branda, Steven S.; Lane, Todd W.; Misra, Milind; Meagher, Robert J.; Patel, Kamlesh D.; Kaiser, Julia N.

2009-11-01T23:59:59.000Z

229

Enhanced Control of PWR Primary Coolant Water Chemistry Using Selective Separation Systems for Recovery and Recycle of Enriched Boric Acid  

SciTech Connect

The objective of this project is to develop systems that will allow for increased nuclear energy production through the use of enriched fuels. The developed systems will allow for the efficient and selective recover of selected isotopes that are additives to power water reactors' primary coolant chemistry for suppression of corrosion attack on reactor materials.

Ken Czerwinski; Charels Yeamans; Don Olander; Kenneth Raymond; Norman Schroeder; Thomas Robison; Bryan Carlson; Barbara Smit; Pat Robinson

2006-02-28T23:59:59.000Z

230

Design of Bang-bang Controller Based on a Fuzzy-Neuro Approach: Application to a Heating System  

Science Conference Proceedings (OSTI)

A fuzzy-neuro approach for the design of bang-bang controller is presented in this paper. The approach has been used with success for the time optimal bang-bang control of a heating system. The improved bang-bang controller suppresses the oscillations ... Keywords: Fuzzy-neural control, bang-bang controller, heating system

Grantham K. H. Pang; Samy A. Mesbah

1998-05-01T23:59:59.000Z

231

Hsp105 family proteins suppress staurosporine-induced apoptosis by inhibiting the translocation of Bax to mitochondria in HeLa cells  

Science Conference Proceedings (OSTI)

Hsp105 (Hsp105{alpha} and Hsp105{beta}), major heat shock proteins in mammalian cells, belong to a subgroup of the HSP70 family, HSP105/110. Previously, we have shown that Hsp105{alpha} has completely different effects on stress-induced apoptosis depending on cell type. However, the molecular mechanisms by which Hsp105{alpha} regulates stress-induced apoptosis are not fully understood. Here, we established HeLa cells that overexpress either Hsp105{alpha} or Hsp105{beta} by removing doxycycline and examined how Hsp105 modifies staurosporine (STS)-induced apoptosis in HeLa cells. Apoptotic features such as the externalization of phosphatidylserine on the plasma membrane and nuclear morphological changes were induced by the treatment with STS, and the STS-induced apoptosis was suppressed by overexpression of Hsp105{alpha} or Hsp105{beta}. In addition, we found that overexpression of Hsp105{alpha} or Hsp105{beta} suppressed the activation of caspase-3 and caspase-9 by preventing the release of cytochrome c from mitochondria. Furthermore, the translocation of Bax to mitochondria, which results in the release of cytochrome c from the mitochondria, was also suppressed by the overexpression of Hsp105{alpha} or Hsp105{beta}. Thus, it is suggested that Hsp105 suppresses the stress-induced apoptosis at its initial step, the translocation of Bax to mitochondria in HeLa cells.

Yamagishi, Nobuyuki [Department of Biochemistry, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414 (Japan); Ishihara, Keiichi [Department of Biochemistry, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414 (Japan); Saito, Youhei [Department of Biochemistry, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414 (Japan); Hatayama, Takumi [Department of Biochemistry, Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414 (Japan)]. E-mail: hatayama@mb.kyoto-phu.ac.jp

2006-10-15T23:59:59.000Z

232

Absorber and emitter for solar thermo-photovoltaic systems to achieve efficiency  

E-Print Network (OSTI)

Pbs photovoltaic cells," Int. J. Energy Res. 16(6), 481­487 (1992). 7. V. Badescu, "ThermodynamicAbsorber and emitter for solar thermo- photovoltaic systems to achieve efficiency exceeding, provides a sharp emissivity peak at the solar cell band-gap while suppressing emission at lower frequencies

Fan, Shanhui

233

Nanoscale strain-induced pair suppression as a source of vortex pinning in high-temperature superconductors  

SciTech Connect

Boosting large-scale superconductor applications require nanostructured conductors with artificial pinning centres immobilizing quantized vortices at high temperature and magnetic fields. Here we demonstrate a highly effective mechanism of artificial pinning centres in solution-derived high-temperature superconductor nanocomposites through generation of nanostrained regions where Cooper pair formation is suppressed. The nanostrained regions identified from transmission electron microscopy devise a very high concentration of partial dislocations associated with intergrowths generated between the randomly oriented nanodots and the epitaxial YBa{sub 2}Cu{sub 3}O{sub 7} matrix. Consequently, an outstanding vortex-pinning enhancement correlated to the nanostrain is demonstrated for four types of randomly oriented nanodot, and a unique evolution towards an isotropic vortex-pinning behaviour, even in the effective anisotropy, is achieved as the nanostrain turns isotropic. We suggest a new vortex-pinning mechanism based on the bond-contraction pairing model, where pair formation is quenched under tensile strain, forming new and effective core-pinning regions.

Llordes, A. [ICMAB, Barcelona, Spain; Palau, A. [ICMAB, Barcelona, Spain; Vlad, R. [ICMAB, Barcelona, Spain; Pomar, A. [ICMAB, Barcelona, Spain; Arbiol, Jordi [ICMAB, Barcelona, Spain; Guzman, Roger [ICMAB, Barcelona, Spain; Gazquez Alabart, Jaume [ORNL; Varela del Arco, Maria [ORNL; Sandiumenge, Felip [ICMAB, Barcelona, Spain; Ricart, Susagna [ICMAB, Barcelona, Spain; Puig, Teresa [ICMAB, Barcelona, Spain; Chataigner, D. [CRISMAT, Caen, France; Vanacken, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Gutierrez, J. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Deutscher, G. [Tel Aviv University; Moschalkov, V. [INPAC-Institute for Nanoscale Physics and Chemistry, Leuven, Belgium; Obradors, Xavier [ICMAB, Barcelona, Spain

2012-01-01T23:59:59.000Z

234

Observation of the Cabibbo-Suppressed Decay {xi}{sup +}{sub c} {yields} pK{sup -} {pi}{sup +}  

SciTech Connect

We report the first observation of the Cabibbo-suppressed charm baryon decay {xi}{sup +}{sub c}{yields}pK{sup -}{pi}{sup +} . We observe 150{+-}22{+-}5 events for the signal. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV/c {sigma}{sup -} beam. The branching fractions of the decay relative to the Cabibbo-favored {xi}{sup +}{sub c}{yields}{sigma}{sup +}K{sup -}{pi}{sup +} and {xi}{sup +}{sub c}{yields} {xi}{sup -}{pi}{sup +}{pi}{sup +} are measured to be B({xi}{sup +}{sub c}{yields}pK{sup -}{pi}{sup +})/B({xi}{sup +}{sub c} {yields}{sigma}{sup +}K{sup -}{pi}{sup +}) =0.22{+-}0.06{+-}0.03 and B({xi}{sup +}{sub c}{yields}pK{sup -}{pi}{sup +})/B({xi}{sup +}{sub c} {yields}{xi}{sup -}{pi}{sup +}{pi}{sup +} )=0.20{+-}0.04{+-}0.02 , respectively. (c) 2000 The American Physical Society.

Jun, S. Y. [Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States)] [Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Akchurin, N. [University of Iowa, Iowa City, Iowa 52242 (United States)] [University of Iowa, Iowa City, Iowa 52242 (United States); Andreev, V. A. [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation)] [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation); Atamantchouk, A. G. [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation)] [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation); Aykac, M. [University of Iowa, Iowa City, Iowa 52242 (United States)] [University of Iowa, Iowa City, Iowa 52242 (United States); Balatz, M. Y. [Institute of Theoretical and Experimental Physics, Moscow, Russia (Russian Federation)] [Institute of Theoretical and Experimental Physics, Moscow, Russia (Russian Federation); Bondar, N. F. [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation)] [Petersburg Nuclear Physics Institute, St. Petersburg, Russia (Russian Federation); Bravar, A. [University of Trieste and INFN, Trieste, (Italy)] [University of Trieste and INFN, Trieste, (Italy); Cooper, P. S. [Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)] [Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); Dauwe, L. J. [University of Michigan-Flint, Flint, Michigan 48502 (United States)] (and others) [University of Michigan-Flint, Flint, Michigan 48502 (United States)

2000-02-28T23:59:59.000Z

235

Driving toroidally asymmetric current through the tokamak scrape-off layer, Part I: Potential for ELM suppression  

SciTech Connect

A potential technique for suppressing edge localized magnetohydrodynamic instabilities (ELMs) is theoretically analyzed. Recent experiments have shown that externally generated resonant magnetic perturbations (RMPs) can stabilize ELMs by modifying the density profile [T. E. Evans, et al., Nature Phys. 2, 419 (2006); Y. Liang, et al., Phys. Rev. Lett. 98, 265004 (2007)]. Driving toroidally asymmetric current internally, through the scrape-off layer (SOL) plasma itself, can also generate RMPs that are close to the required threshold for ELM control. The limiting ion saturation current densities can be achieved by producing potential differences on the order of the electron temperature. Although the threshold is uncertain in future devices, if driven coherently though the SOL, the upper limit for the resulting field would exceed the present experimental threshold. This analysis provides the tools required for estimating the magnitude of the coherent SOL current and RMP generated via toroidally asymmetric biasing of the target. Flux expansion increases the RMP near the X-point, while phase interference due to the shearing of field lines near the X-point reduces the amplitude of the effective SOL perturbation and makes the result sensitive to both toroidal mode number n and the radial coherence width of the biasing region. If the limiting current density decays rapidly enough radially, both the width and the amplitude of the current density drawn from the target will be reduced. The RMP can still exceed the present threshold at low n if the radial location and width of the biasing region are optimally chosen.

Joseph, I; Cohen, R H; Ryutov, D D

2009-03-31T23:59:59.000Z

236

Design of a telescope-occulter system for THEIA  

E-Print Network (OSTI)

The Telescope for Habitable Exoplanets and Interstellar/Intergalactic Astronomy (THEIA) is a mission concept study for a flagship-class telescope-occulter system to search for terrestrial planets and perform general astrophysics with a space-based 4m telescope. A number of design options were considered for the occulter and telescope optical systems; in this paper we discuss the design of occulters and coronagraphs for THEIA and examine their merits. We present two optimized occulters: a 25.6m-radius occulter with 19m petals that achieves 10^-12 suppression from 250-1000nm with a 75mas inner working angle, and a 20.0m-radius occulter with 10m petals that achieves 10^-12 suppression from 250-700nm with a 75mas inner working angle. For more widely separated planets (IWA > 108mas), this second occulter is designed to operate at a second closer distance where it provides 10^-12 suppression from 700-1000nm. We have also explored occulter/coronagraph hybrid systems, and found that an AIC coronagraph that exploits t...

Cady, Eric; Dumont, Philip; Egerman, Robert; Kasdin, N Jeremy; Linfield, Roger; Lisman, Doug; Savransky, Dmitry; Seager, Sara; Shaklan, Stuart; Spergel, David; Tenerelli, Domenick; Vanderbei, Robert

2009-01-01T23:59:59.000Z

237

Suppressant: Inert Gases  

Science Conference Proceedings (OSTI)

... Influencing the Reported Extinguishing Concentrations of Inert Gases.. ... for the Protection of Machinery Spaces and Gas Turbine Enclosures in ...

2013-05-03T23:59:59.000Z

238

PYROGENIC AEROSOL FIRE SUPPRESSANTS ...  

Science Conference Proceedings (OSTI)

... were indicative of rates obtained from exposure to SFE-A. Monel 400, nickel, and stainless experienced nominal corrosion rates. Zinc, copper, and ...

2011-11-01T23:59:59.000Z

239

Suppressant:Perfluorocarbons (PFCs)  

Science Conference Proceedings (OSTI)

... Acid Gas Production in Inhibited Diffusion Flames.. ... Evaluation of Laser-Induced Breakdown Spectroscopy (LIBS) for ... to an External Energy Source.. ...

2012-03-20T23:59:59.000Z

240

SAE Fire Suppression Paper  

Science Conference Proceedings (OSTI)

... The unconventional shapes of the suppressor bottles (see figure 4) proved to be a considerable design challenge during the development of the ...

2011-10-27T23:59:59.000Z

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241

Suppressed Expression of T-Box Transcription Factors is Involved in Senescence in Chronic Obstructive Pulmonary Disease  

Science Conference Proceedings (OSTI)

Chronic obstructive pulmonary disease (COPD) is a major global health problem. The etiology of COPD has been associated with apoptosis, oxidative stress, and inflammation. However, understanding of the molecular interactions that modulate COPD pathogenesis remains only partly resolved. We conducted an exploratory study on COPD etiology to identify the key molecular participants. We used information-theoretic algorithms including Context Likelihood of Relatedness (CLR), Algorithm for the Reconstruction of Accurate Cellular Networks (ARACNE), and Inferelator. We captured direct functional associations among genes, given a compendium of gene expression profiles of human lung epithelial cells. A set of genes differentially expressed in COPD, as reported in a previous study were superposed with the resulting transcriptional regulatory networks. After factoring in the properties of the networks, an established COPD susceptibility locus and domain-domain interactions involving protein products of genes in the generated networks, several molecular candidates were predicted to be involved in the etiology of COPD. These include COL4A3, CFLAR, GULP1, PDCD1, CASP10, PAX3, BOK, HSPD1, PITX2, and PML. Furthermore, T-box (TBX) genes and cyclin-dependent kinase inhibitor 2A (CDKN2A), which are in a direct transcriptional regulatory relationship, emerged as preeminent participants in the etiology of COPD by means of senescence. Contrary to observations in neoplasms, our study reveals that the expression of genes and proteins in the lung samples from patients with COPD indicate an increased tendency towards cellular senescence. The expression of the anti-senescence mediators TBX transcription factors, chromatin modifiers histone deacetylases, and sirtuins was suppressed; while the expression of TBX-regulated cellular senescence markers such as CDKN2A, CDKN1A, and CAV1 was elevated in the peripheral lung tissue samples from patients with COPD. The critical balance between senescence and anti-senescence factors is disrupted towards senescence in COPD lungs.

Acquaah-Mensah, George; Malhotra, Deepti; Vulimiri, Madhulika; McDermott, Jason E.; Biswal, Shyam

2012-06-19T23:59:59.000Z

242

Direct Evidence for the Suppression of Charge Stripes in Epitaxial {La1.67Sr0.33NiO4} Films  

Science Conference Proceedings (OSTI)

We have successfully grown epitaxial La1.67Sr0.33NiO4 films with a small crystalline mosaic using pulsed laser deposition. With synchrotron radiation, the x-ray-diffraction peaks associated with charge stripes have been successfully observed for relatively thick films. Anomalies due to the charge-ordering transition have been examined using four-point probe resistivity measurements. X-ray scattering provides direct evidence for suppression of the stripe phase in thinner samples; the phase disappears for film thicknesses 2600 Angstroms. The suppression appears to be a result of shrinking the stripe phase domains. This may reflect the stripe phase progressing from nematic to isotropic.

Xie,C.; Budnick, J.; Hines, W.; Wells, B.; He, F.; Moodenbaugh, A.

2008-01-01T23:59:59.000Z

243

Suppression of electric and magnetic fluctuations and improvement of confinement due to current profile modification by biased electrode in Saha Institute of Nuclear Physics tokamak  

Science Conference Proceedings (OSTI)

Improvement of plasma confinement is achieved in normal q{sub a} discharges of SINP-tokamak by introducing a biased electrode inside the last closed flux surface. All the important features of high confinement mode are observed biasing the electrode negatively with respect to the vacuum vessel. Arrays of electric and magnetic probes introduced in the edge plasma region reveal suppression of electric and magnetic fluctuations over distinct frequency ranges as well as modification of the toroidal current profile due to biasing. Further analysis identifies the electrostatic fluctuations to be due to drift mode and the magnetic fluctuations may be of slow compressional Alfven waves. Both get suppressed due to current profile modification during biasing, hence leading to the improvement of plasma confinement.

Basu, Debjyoti; Pal, Rabindranath [Saha Institute of Nuclear Physics, 1/AF-Bidhannagar, Kolkata 700064 (India); Ghosh, Joydeep; Chattopadhyay, Prabal K. [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2012-07-15T23:59:59.000Z

244

Suppressing longitudinal double-layer oscillations by using elliptically polarized laser pulses in the hole-boring radiation pressure acceleration regime  

SciTech Connect

It is shown that well collimated mono-energetic ion beams with a large particle number can be generated in the hole-boring radiation pressure acceleration regime by using an elliptically polarized laser pulse with appropriate theoretically determined laser polarization ratio. Due to the J Multiplication-Sign B effect, the double-layer charge separation region is imbued with hot electrons that prevent ion pileup, thus suppressing the double-layer oscillations. The proposed mechanism is well confirmed by Particle-in-Cell simulations, and after suppressing the longitudinal double-layer oscillations, the ion beams driven by the elliptically polarized lasers own much better energy spectrum than those by circularly polarized lasers.

Wu Dong; Yan, X. Q. [Center for Applied Physics and Technology, Peking University, Beijing 100871 (China); Key Laboratory of High Energy Density Physics Simulation, Ministry of Education, Peking University, Beijing 100871 (China); Zheng, C. Y.; Zhou, C. T.; He, X. T. [Center for Applied Physics and Technology, Peking University, Beijing 100871 (China); Key Laboratory of High Energy Density Physics Simulation, Ministry of Education, Peking University, Beijing 100871 (China); Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Yu, M. Y. [Institute of Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China)

2013-02-15T23:59:59.000Z

245

Study on scale formation and suppression in heat-exchange systems for simulated geothermal brines. Final report, January 12, 1976-March 5, 1978  

DOE Green Energy (OSTI)

Control of scale formation in heat exchangers using simulated geothermal waters can be achieved by lowering the pH of the water to pH 6 or lower. This does not, however, appear to be an economic approach for highly buffered geothermal brines and would lead to severe corrosion problems. Two commercial scale control agents, Calgon CL-165 and Monsanto Dequest 2060, showed promise of effecting scaling in a minor way and should be tested further on actual geothermal waters. Other scale control methods tested were unsuccessful. These included seeding experiments, turbulence promotin and electostatic and electromagnetic devices reputated to modify scale formation. The experiments were performed with tube-in-shell heat exchangers using simulated geothermal waters prepared from a salt dome solution based brine. The scale formed was primarily silica with a small percent of calcium carbonate and traces of magnesium and iron. Physically it was a hydrous soft solid adhering only lightly to the heat exchange surface. This is not typical of geothermal water scales encountered in high temperature brine operations and the results of the scale control expeirments should be evaluated with that in mind.

Wilson, J.S.; King, J.E.; Bullard, G.R.

1978-01-01T23:59:59.000Z

246

Safety implications associated with in-plant pressurized gas storage and distribution systems in nuclear power plants  

SciTech Connect

Storage and handling of compressed gases at nuclear power plants were studied to identify any potential safety hazards. Gases investigated were air, acetylene, carbon dioxide, chlorine, Halon, hydrogen, nitrogen, oxygen, propane, and sulfur hexaflouride. Physical properties of the gases were reviewed as were applicable industrial codes and standards. Incidents involving pressurized gases in general industry and in the nuclear industry were studied. In this report general hazards such as missiles from ruptures, rocketing of cylinders, pipe whipping, asphyxiation, and toxicity are discussed. Even though some serious injuries and deaths over the years have occurred in industries handling and using pressurized gases, the industrial codes, standards, practices, and procedures are very comprehensive. The most important safety consideration in handling gases is the serious enforcement of these well-known and established methods. Recommendations are made concerning compressed gas cylinder missiles, hydrogen line ruptures or leaks, and identification of lines and equipment.

Guymon, R.H.; Casto, W.R.; Compere, E.L.

1985-05-01T23:59:59.000Z

247

Context: Environment  

Science Conference Proceedings (OSTI)

... Decision Tree for Global Environmental Impact Screening.. ... United Nations Environment Programme's Role in Eliminating Halon Dependency in ...

2011-11-16T23:59:59.000Z

248

Ozone Depletion and Global Warming an Integrated Approach  

Science Conference Proceedings (OSTI)

... Time frame for decommissioning Weight equivalent for replacements Halon 1301 ODP 16 ... for future destruction. Time frame for decommissioning ...

2011-10-18T23:59:59.000Z

249

Context: Destruction/Conversion  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. Context: Destruction/Conversion. ... Process for Conversion of Halon 1211.. Tran, R.; Kennedy, EM; Dlugogorski, BZ; 2000. ...

2011-11-17T23:59:59.000Z

250

Context: Usage and Effectiveness  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. Context: Usage and Effectiveness. US Navy Aircraft Halon 1301 Effectivity Analysis.. Tedeschi, M.; Leach, W.; 1995. ...

2011-12-14T23:59:59.000Z

251

Application: Facilities  

Science Conference Proceedings (OSTI)

... Option.. Papavergos, PG; 1991. Halon 1301 Use in Oil and Gas Production Facilities: Alaska's North Slope.. Ulmer, PE; 1991. ...

2011-12-22T23:59:59.000Z

252

NETL: Gasification Systems - Feed Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Feed Systems Gasification Systems Feed Systems Research on commercial gasifier feed systems is occurring in two primary areas of fuel (i.e. coal, biomass, etc.) feed and advanced...

253

A Fast Hardware Tracker for the ATLAS Trigger System  

E-Print Network (OSTI)

In hadron collider experiments, triggering the detector to store interesting events for offline analysis is a challenge due to the high rates and multiplicities of particles produced. Maintaining high trigger efficiency for the physics we are most interested in while at the same time suppressing high rate physics from inclusive QCD processes is a difficult but important problem. It is essential that the trigger system be flexible and robust, with sufficient redundancy and operating margin. Providing high quality track reconstruction over the full ATLAS detector by the start of processing at LVL2 is an important element to achieve these needs. As the instantaneous luminosity increases, the computational load on the LVL2 system will significantly increase due to the need for more sophisticated algorithms to suppress backgrounds. The Fast Tracker (FTK) is a proposed upgrade to the ATLAS trigger system. It is designed to enable early rejection of background events and thus leave more LVL2 execution time by moving track reconstruction into a hardware system that takes massively parallel processing to the extreme. The FTK system completes global track reconstruction with near offline resolution shortly after the start of LVL2 processing by rapidly finding and fitting tracks in the inner detector for events passing LVL1 using pattern recognition from a large, pre-computed bank of possible hit patterns. We describe the FTK system design and expected performance in the areas of b-tagging, {\\tau}-tagging, and lepton isolation which play and important role in the ATLAS physics program.

Mark S. Neubauer; for the ATLAS Collaboration

2011-10-10T23:59:59.000Z

254

Ammonia-Free NOx Control System  

SciTech Connect

Research is being conducted under United States Department of Energy (DOE) Contract DEFC26-03NT41865 to develop a new technology to achieve very low levels of NOx emissions from pulverized coal fired boiler systems by employing a novel system level integration between the PC combustion process and the catalytic NOx reduction with CO present in the combustion flue gas. The combustor design and operating conditions will be optimized to achieve atypical flue gas conditions. This approach will not only suppress NOx generation during combustion but also further reduce NOx over a downstream catalytic reactor that does not require addition of an external reductant, such as ammonia. This report describes the work performed during the January 1 to March 31, 2004 time period.

S. Wu; Z. Fan; R. Herman

2004-03-31T23:59:59.000Z

255

Ammonia-Free NOx Control System  

SciTech Connect

Research is being conducted under United States Department of Energy (DOE) Contract DEFC26-03NT41865 to develop a new technology to achieve very low levels of NOx emissions from pulverized coal fired boiler systems by employing a novel system level integration between the PC combustion process and the catalytic NOx reduction with CO present in the combustion flue gas. The combustor design and operating conditions will be optimized to achieve atypical flue gas conditions. This approach will not only suppress NOx generation during combustion but also further reduce NOx over a downstream catalytic reactor that does not require addition of an external reductant, such as ammonia. This report describes the work performed during the April 1 to June 30, 2004 time period.

Zhen Fan; Song Wu; Richard G. Herman

2004-06-30T23:59:59.000Z

256

Two effects relevant for the study of astrophysical reaction rates: {gamma} transitions in capture reactions and Coulomb suppression of the stellar enhancement  

Science Conference Proceedings (OSTI)

Nucleosynthesis processes involve reactions on several thousand nuclei, both close to and far off stability. The preparation of reaction rates to be used in astrophysical investigations requires experimental and theoretical input. In this context, two interesting aspects are discussed: (i) the relevant {gamma} transition energies in astrophysical capture reactions, and (ii) the newly discovered Coulomb suppression of the stellar enhancement factor. The latter makes a number of reactions with negative Q value more favorable for experimental investigation than their inverse reactions, contrary to common belief.

Rauscher, Thomas [Departement Physik, Universitaet Basel, CH-4056 Basel (Switzerland)

2009-01-28T23:59:59.000Z

257

Neutral Beam Power System for TPX  

SciTech Connect

The Tokamak Physics Experiment (TPX) will utilize to the maximum extent the existing Tokamak Fusion Test Reactor (TFTR) equipment and facilities. This is particularly true for the TFTR Neutral Beam (NB) system. Most of the NB hardware, plant facilities, auxiliary sub-systems, power systems, service infrastructure, and control systems can be used as is. The major changes in the NB hardware are driven by the new operating duty cycle. The TFTR Neutral Beam was designed for operation of the Sources for 2 seconds every 150 seconds. The TPX requires operation for 1000 seconds every 4500 seconds. During the Conceptual Design Phase of TPX every component of the TFTR NB Electrical Power System was analyzed to verify whether the equipment can meet the new operational requirements with our without modifications. The Power System converts 13.8 kV prime power to controlled pulsed power required at the NB sources. The major equipment involved are circuit breakers, auto and rectifier transformers surge suppression components, power tetrodes, HV Decks, and HVDC power transmission to sources. Thermal models were developed for the power transformers to simulate the new operational requirements. Heat runs were conducted for the power tetrodes to verify capability. Other components were analyzed to verify their thermal limitations. This paper describes the details of the evaluation and redesign of the electrical power system components to meet the TPX operational requirements.

Ramakrishnan, S.; Bowen, O.N.; O`Conner, T.; Edwards, J.; Fromm, N.; Hatcher, R.; Newman, R.; Rossi, G.; Stevenson, T.; von Halle, A.

1993-11-01T23:59:59.000Z

258

System to control contamination during retrieval of buried TRU waste  

DOE Patents (OSTI)

Between 1950 and 1970 the Department of Energy`s Rocky Flats Plant generated transuranic (TRU) contaminated waste, which was buried at the Idaho National Engineering Laboratory. This waste must now be retrieved and sent to a permanent disposal site. During retrieval the main contaminates to be controlled are compounds of plutonium and americium. Since these substances are small sized, and extremely mobile, airborne concentrations must be kept to a minimum to effectively eliminate personnel uptake during retrieval operations. This report describes an invention that relates to a system to control contamination due to TRU airborne particles and was developed consisting of an outer containment building, an inner containment area, a dust suppression system including an electrostatic contaminate capture subsystem, a contamination control system including a moisture control subsystem, a rapid monitoring subsystem, and a lifting and moving system including recovery and repackaging subsystems, and a lifting and moving system including recovery and repackaging subsystems.

Menkhaus, D.E.; Loomis, G.G.; Feldman, E.M.; Scott, D.W.; Mullen, C.K.; Meyer, L.C.

1991-12-31T23:59:59.000Z

259

Multiple channel data acquisition system  

DOE Patents (OSTI)

A multiple channel data acquisition system for the transfer of large amounts of data from a multiplicity of data channels has a plurality of modules which operate in parallel to convert analog signals to digital data and transfer that data to a communications host via a FASTBUS. Each module has a plurality of submodules which include a front end buffer (FEB) connected to input circuitry having an analog to digital converter with cache memory for each of a plurality of channels. The submodules are interfaced with the FASTBUS via a FASTBUS coupler which controls a module bus and a module memory. The system is triggered to effect rapid parallel data samplings which are stored to the cache memories. The cache memories are uploaded to the FEBs during which zero suppression occurs. The data in the FEBs is reformatted and compressed by a local processor during transfer to the module memory. The FASTBUS coupler is used by the communications host to upload the compressed and formatted data from the module memory. The local processor executes programs which are downloaded to the module memory through the FASTBUS coupler.

Crawley, H. Bert (Ames, IA); Rosenberg, Eli I. (Ames, IA); Meyer, W. Thomas (Ames, IA); Gorbics, Mark S. (Ames, IA); Thomas, William D. (Boone, IA); McKay, Roy L. (Ames, IA); Homer, Jr., John F. (Ames, IA)

1990-05-22T23:59:59.000Z

260

Multiple channel data acquisition system  

DOE Patents (OSTI)

A multiple channel data acquisition system for the transfer of large amounts of data from a multiplicity of data channels has a plurality of modules which operate in parallel to convert analog signals to digital data and transfer that data to a communications host via a FASTBUS. Each module has a plurality of submodules which include a front end buffer (FEB) connected to input circuitry having an analog to digital converter with cache memory for each of a plurality of channels. The submodules are interfaced with the FASTBUS via a FASTBUS coupler which controls a module bus and a module memory. The system is triggered to effect rapid parallel data samplings which are stored to the cache memories. The cache memories are uploaded to the FEBs during which zero suppression occurs. The data in the FEBs is reformatted and compressed by a local processor during transfer to the module memory. The FASTBUS coupler is used by the communications host to upload the compressed and formatted data from the module memory. The local processor executes programs which are downloaded to the module memory through the FASTBUS coupler. 25 figs.

Crawley, H.B.; Rosenberg, E.I.; Meyer, W.T.; Gorbics, M.S.; Thomas, W.D.; McKay, R.L.; Homer, J.F. Jr.

1990-05-22T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Photovoltaic system in system LABI  

Science Conference Proceedings (OSTI)

There is prepared a new model marked as DE10 to extens the system LABI. It is a photovoltaic system. Utilizing of model is into the field of university studying and as a pilot test system for all extern experts. A special parts of model are measurement ... Keywords: automation, measurement, photovoltaic system, sun energy

Hruska Frantisek

2010-07-01T23:59:59.000Z

262

doi:10.1093/aob/mcn127, available online at www.aob.oxfordjournals.org REVIEW Indirect Suppression of Photosynthesis on Individual Leaves by Arthropod Herbivory  

E-Print Network (OSTI)

† Background Herbivory reduces leaf area, disrupts the function of leaves, and ultimately alters yield and productivity. Herbivore damage to foliage typically is assessed in the field by measuring the amount of leaf tissue removed and disrupted. This approach assumes the remaining tissues are unaltered, and plant photosynthesis and water balance function normally. However, recent application of thermal and fluorescent imaging technologies revealed that alterations to photosynthesis and transpiration propagate into remaining undamaged leaf tissue. † Scope and Conclusions This review briefly examines the indirect effects of herbivory on photosynthesis, measured by gas exchange or chlorophyll fluorescence, and identifies four mechanisms contributing to the indirect suppression of photosynthesis in remaining leaf tissues: severed vasculature, altered sink demand, defence-induced autotoxicity, and defence-induced down-regulation of photosynthesis. We review the chlorophyll fluorescence and thermal imaging techniques used to gather layers of spatial data and discuss methods for compiling these layers to achieve greater insight into mechanisms contributing to the indirect suppression of photosynthesis. We also elaborate on a few herbivore-induced gene-regulating mechanisms which modulate photosynthesis and discuss the difficult nature of measuring spatial heterogeneity when combining fluorescence imaging and gas exchange technology. Although few studies have characterized herbivore-induced indirect effects on photosynthesis at the leaf level, an emerging literature suggests that the loss of photosynthetic capacity following herbivory may be greater than

Paul D. Nabity; Jorge A. Zavala; Evan H. Delucia

2008-01-01T23:59:59.000Z

263

Model of rotary-actuated flexible beam with notch filter vibration suppression controller and torque feedforward load compensation controller  

Science Conference Proceedings (OSTI)

This paper describes ORNL`s development of an environment for the simulation of robotic manipulators. Simulation includes the modeling of kinematics, dynamics, sensors, actuators, control systems, operators, and environments. Models will be used for manipulator design, proposal evaluation, control system design and analysis, graphical preview of proposed motions, safety system development, and training. Of particular interest is the development of models for robotic manipulators having at least one flexible link. As a first application, models have been developed for the Pacific Northwest Laboratory`s Flexible Beam Test Bed (PNL FBTB), which is a 1-Degree-of-Freedom, flexible arm with a hydraulic base actuator. ORNL transferred control algorithms developed for the PNL FBTB to controlling IGRIP models. A robust notch filter is running in IGRIP controlling a full dynamics model of the PNL test bed. Model results provide a reasonable match to the experimental results (quantitative results are being determined) and can run on ORNL`s Onyx machine in approximately realtime. The flexible beam is modeled as six rigid sections with torsional springs between each segment. The spring constants were adjusted to match the physical response of the flexible beam model to the experimental results. The controller is able to improve performance on the model similar to the improvement seen on the experimental system. Some differences are apparent, most notably because the IGRIP model presently uses a different trajectory planner than the one used by ORNL on the PNL test bed. In the future, the trajectory planner will be modified so that the experiments and models are the same. The successful completion of this work provides the ability to link C code with IGRIP, thus allowing controllers to be developed, tested, and tuned in simulation and then ported directly to hardware systems using the C language.

Bills, K.C.; Kress, R.L.; Kwon, D.S. [Oak Ridge National Lab., TN (United States); Baker, C.P. [Battelle, Richland, WA (United States). Dept. of Automation and Measurement Sciences

1994-12-31T23:59:59.000Z

264

File Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

File Systems File Systems File Systems For a general description of the different file systems available on PDSF please see Eliza File Systems and Other File Systems. Below is a summary of how STAR uses the various systems: /common The STAR software is installed on /common. For 32sl44 it is under /common/star/star44 and for sl53 it is under /common/star/star53. In both cases the software consists primarily of a STAR-specific ROOT installation on which releases of the STAR libraries are built as shown on the Local STAR Libraries page. /eliza3, /eliza6, /eliza9, /eliza14, /eliza15, /eliza17 STAR has space on 6 elizas as shown in the table below. File System star space (TB) use eliza3 39 production eliza6 9 production eliza9 39 production eliza14 34 production, user space under /eliza14/star/pwg

265

System Effectiveness  

SciTech Connect

An effective risk assessment system is needed to address the threat posed by an active or passive insider who, acting alone or in collusion, could attempt diversion or theft of nuclear material. It is critical that a nuclear facility conduct a thorough self-assessment of the material protection, control, and accountability (MPC&A) system to evaluate system effectiveness. Self-assessment involves vulnerability analysis and performance testing of the MPC&A system. The process should lead to confirmation that mitigating features of the system effectively minimize the threat, or it could lead to the conclusion that system improvements or upgrades are necessary to achieve acceptable protection against the threat. Analysis of the MPC&A system is necessary to understand the limits and vulnerabilities of the system to internal threats. Self-assessment helps the facility be prepared to respond to internal threats and reduce the risk of theft or diversion of nuclear material. MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's MPC&A system. MSET analyzes the effectiveness of an MPC&A system based on defined performance metrics for MPC&A functions based on U.S. and international best practices and regulations. A facility's MC&A system can be evaluated at a point in time and reevaluated after upgrades are implemented or after other system changes occur. The total system or specific subareas within the system can be evaluated. Areas of potential performance improvement or system upgrade can be assessed to determine where the most beneficial and cost-effective improvements should be made. Analyses of risk importance factors show that sustainability is essential for optimal performance. The analyses reveal where performance degradation has the greatest detrimental impact on total system risk and where performance improvements have the greatest reduction in system risk. The risk importance factors show the amount of risk reduction achievable with potential upgrades and the amount of risk reduction actually achieved after upgrades are completed. Applying the risk assessment tool gives support to budget prioritization by showing where budget support levels must be sustained for MC&A functions most important to risk. Results of the risk assessment are also useful in supporting funding justifications for system improvements that significantly reduce system risk.

Powell, Danny H [ORNL; Elwood Jr, Robert H [ORNL

2011-01-01T23:59:59.000Z

266

Gasification Systems Projects & Performers  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Systems Gasification Systems Projects & Performers Gasification Systems - Key Technologies Feed Systems Gasifier Optimization and Plant Supporting Systems Syngas...

267

Advanced Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Systems: Advanced Systems: high Performance fenestration systems Research areas: Research activities to improve the performance of windows and other fenestration products must address window systems issues as well as Glazing Materials research. LBNL activities in the area of Advanced Systems include research at both the product level and the building envelope and building systems levels. Highly insulating windows - using non structural center layers Lower cost solutions to more insulating three layer glazing systems, with the potential to turn windows in U.S. heating dominated residential applications into net-energy gainers. Highly Insulating Window Frames In collaboration with the Norwegian University of Science and Technology, we are researching the potentials for highly insulating window frames. Our initial work examines European frames with reported U-factors under 0.15 Btu/hr-ft2-F. Future research aims to analyze these designs, verify these performance levels and ensure that procedures used to calculate frame performance are accurate.

268

Long-time electron spin storage via dynamical suppression of hyperfine-induced decoherence in a quantum dot  

SciTech Connect

The coherence time of an electron spin decohered by the nuclear spin environment in a quantum dot can be substantially increased by subjecting the electron to suitable dynamical decoupling sequences. We analyze the performance of high-level decoupling protocols by using a combination of analytical and exact numerical methods, and by paying special attention to the regimes of large interpulse delays and long-time dynamics, which are outside the reach of standard average Hamiltonian theory descriptions. We demonstrate that dynamical decoupling can remain efficient far beyond its formal domain of applicability, and find that a protocol exploiting concatenated design provides best performance for this system in the relevant parameter range. In situations where the initial electron state is known, protocols able to completely freeze decoherence at long times are constructed and characterized. The impact of system and control nonidealities is also assessed, including the effect of intrabath dipolar interaction, magnetic field bias and bath polarization, as well as systematic pulse imperfections. While small bias field and small bath polarization degrade the decoupling fidelity, enhanced performance and temporal modulation result from strong applied fields and high polarizations. Overall, we find that if the relative errors of the control pulse flip angles do not exceed 3%, decoupling protocols can still prolong the coherence time by up to 2 orders of magnitude.

Zhang, W.; Konstantinidis, N.; Dobrovitski, V.; Harmon, B.; Santos, L.; Viola, L.

2008-03-27T23:59:59.000Z

269

Strange quark suppression and strange hadron production in pp collisions at energies available at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider  

Science Conference Proceedings (OSTI)

The parton and hadron cascade model PACIAE based on PYTHIA is utilized to systematically investigate strange particle production in pp collisions at energies available at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC). Globally speaking, the PACIAE results of the strange particle rapidity density at midrapidity and the transverse momentum distribution are better than those of PYTHIA (default) in comparison with STAR and ALICE experimental data. This may represent the importance of the parton and hadron rescatterings, as well as the reduction mechanism of strange quark suppression, added in the PACIAE model. The K/{pi} ratios as a function of reaction energy in pp collisions from CERN Super Proton Synchrotron (SPS) to LHC energies are also analyzed in this paper.

Long Haiyan; Feng Shengqin; Zhou Daimei; Yan Yuliang; Ma Hailiang; Sa Benhao [Department of Physics, College of Science, China Three Gorges University, Yichang 443002 (China); Institute of Particle Physics, Huazhong Normal University, Wuhan 430082 (China); China Institute of Atomic Energy, P.O. Box 275 (18), Beijing 102413 (China); China Institute of Atomic Energy, P.O. Box 275 (18), Beijing 102413 (China); Institute of Particle Physics, Huazhong Normal University, Wuhan 430082 (China); CCAST (World Laboratory), P.O. Box 8730, Beijing 100080 (China)

2011-09-15T23:59:59.000Z

270

Suppression of ethanol-reinforced behavior by naltrexone is associated with attenuation of the ethanol-induced increase in dialysate dopamine levels in the nucleus accumbens  

E-Print Network (OSTI)

The opiate antagonist naltrexone suppresses ethanolreinforced behavior in animals and decreases ethanol intake in humans. However, the mechanisms underlying these actions are not well understood. Experiments were designed to test the hypothesis that naltrexone attenuates the rewarding properties of ethanol by interfering with ethanol-induced stimulation of dopamine activity in the nucleus accumbens (NAcc). Simultaneous measures of the effects of naltrexone on dialysate dopamine levels in the NAcc and on operant responding for oral ethanol were used. Male Wistar rats were trained to selfadminister ethanol (10–15%, w/v) in 0.2 % (w/v) saccharin during daily 30 min sessions and were surgically prepared for intracranial microdialysis. Experiments began after reliable selfadministration was established. Rats were injected with naltrexone (0.25 mg/kg, s.c.) or saline and 10 min later were placed

Rueben A. Gonzales; Friedbert Weiss

1998-01-01T23:59:59.000Z

271

AEP Systems  

Science Conference Proceedings (OSTI)

... Avoid costs of retrofitting systems to support secure access •Produced by the Yankee Group http://www.yankeegroup.com Page 25. ...

2007-09-25T23:59:59.000Z

272

NETL: Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Systems Coal and Power Systems Gasification Systems Gasifier Optimization & Plant Supporting Systems Feed Systems Feed Systems Gasifier Optimization & Plant Supporting...

273

Power system  

DOE Patents (OSTI)

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

274

System dynamic model and charging control of lead-acid battery for stand-alone solar PV system  

SciTech Connect

The lead-acid battery which is widely used in stand-alone solar system is easily damaged by a poor charging control which causes overcharging. The battery charging control is thus usually designed to stop charging after the overcharge point. This will reduce the storage energy capacity and reduce the service time in electricity supply. The design of charging control system however requires a good understanding of the system dynamic behaviour of the battery first. In the present study, a first-order system dynamics model of lead-acid battery at different operating points near the overcharge voltage was derived experimentally, from which a charging control system based on PI algorithm was developed using PWM charging technique. The feedback control system for battery charging after the overcharge point (14 V) was designed to compromise between the set-point response and the disturbance rejection. The experimental results show that the control system can suppress the battery voltage overshoot within 0.1 V when the solar irradiation is suddenly changed from 337 to 843 W/m{sup 2}. A long-term outdoor test for a solar LED lighting system shows that the battery voltage never exceeded 14.1 V for the set point 14 V and the control system can prevent the battery from overcharging. The test result also indicates that the control system is able to increase the charged energy by 78%, as compared to the case that the charging stops after the overcharge point (14 V). (author)

Huang, B.J.; Hsu, P.C.; Wu, M.S.; Ho, P.Y. [New Energy Center, Department of Mechanical Engineering, National Taiwan University, Taipei (China)

2010-05-15T23:59:59.000Z

275

Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

GASIFICATION SYSTEMS U.S. DEPARTMENT OF ENERGY TECHNOLOGY PROGRAM PLAN PREFACE ii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United...

276

Type systems  

Science Conference Proceedings (OSTI)

The study of type systems has emerged as one of the most active areas of research in programming languages, with applications in software engineering, language design, high-performance compiler implementation, and security. This chapter discusses the ...

Benjamin C. Pierce

2003-01-01T23:59:59.000Z

277

Battery system  

DOE Patents (OSTI)

A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.

Dougherty, Thomas J; Wood, Steven J; Trester, Dale B; Andrew, Michael G

2013-08-27T23:59:59.000Z

278

Photovoltaic Systems  

Energy.gov (U.S. Department of Energy (DOE))

A photovoltaic (PV), or solar electric system, is made up of several photovoltaic solar cells. An individual PV cell is usually small, typically producing about 1 or 2 watts of power. To boost the...

279

Emergency cooling system and method  

DOE Patents (OSTI)

An improved emergency cooling system and method are disclosed that may be adapted for incorporation into or use with a nuclear BWR wherein a reactor pressure vessel (RPV) containing a nuclear core and a heat transfer fluid for circulation in a heat transfer relationship with the core is housed within an annular sealed drywell and is fluid communicable therewith for passage thereto in an emergency situation the heat transfer fluid in a gaseous phase and any noncondensibles present in the RPV, an annular sealed wetwell houses the drywell, and a pressure suppression pool of liquid is disposed in the wetwell and is connected to the drywell by submerged vents. The improved emergency cooling system and method has a containment condenser for receiving condensible heat transfer fluid in a gaseous phase and noncondensibles for condensing at least a portion of the heat transfer fluid. The containment condenser has an inlet in fluid communication with the drywell for receiving heat transfer fluid and noncondensibles, a first outlet in fluid communication with the RPV for the return to the RPV of the condensed portion of the heat transfer fluid and a second outlet in fluid communication with the drywell for passage of the noncondensed balance of the heat transfer fluid and the noncondensibles. The noncondensed balance of the heat transfer fluid and the noncondensibles passed to the drywell from the containment condenser are mixed with the heat transfer fluid and the noncondensibles from the RPV for passage into the containment condenser. A water pool is provided in heat transfer relationship with the containment condenser and is thermally communicable in an emergency situation with an environment outside of the drywell and the wetwell for conducting heat transferred from the containment condenser away from the wetwell and the drywell. 5 figs.

Oosterkamp, W.J.; Cheung, Y.K.

1994-01-04T23:59:59.000Z

280

Systems Studies  

DOE Green Energy (OSTI)

The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

Graham, R.L.

1998-03-17T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Control of open quantum systems: Case study of the central spin model  

E-Print Network (OSTI)

We study the controllability of a central spin guided by a classical field and interacting with a spin bath, showing that the central spin is fully controllable independently of the number of bath spins. Additionally we find that for unequal system-bath couplings even the bath becomes controllable by acting on the central spin alone. We then analyze numerically how the time to implement gates on the central spin scales with the number of bath spins and conjecture that for equal system-bath couplings it reaches a saturation value. We provide evidence that sometimes noise can be effectively suppressed through control.

Christian Arenz; Giulia Gualdi; Daniel Burgarth

2013-11-30T23:59:59.000Z

282

The Trigger System of the H.E.S.S. Telescope Array  

E-Print Network (OSTI)

H.E.S.S. -- The High Energy Stereoscopic System-- is a new system of large atmospheric Cherenkov telescopes for GeV/TeV Gamma-ray astronomy. This paper describes the trigger system of H.E.S.S. with emphasis on the multi-telescope array level trigger. The system trigger requires the simultaneous detection of air-showers by several telescopes at the hardware level. This requirement allows a suppression of background events which in turn leads to a lower system energy threshold for the detection of Gamma-rays. The implementation of the H.E.S.S. trigger system is presented along with data taken to characterise its performance.

S. Funk; G. Hermann; J. Hinton; D. Berge; K. Bernloehr; W. Hofmann; P. Nayman; F. Toussenel; P. Vincent

2004-08-20T23:59:59.000Z

283

NETL: Gasification - Systems Analyses  

NLE Websites -- All DOE Office Websites (Extended Search)

System Analyses Gasification Systems Systems Analyses Go to the NETL Gasification Systems Program's Systems and Industry Analyses Studies Technology & CostPerformance Studies NETL...

284

Natural System  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Natural System Natural System Evaluation and Tool Development - FY11 Progress Report Prepared for U.S. Department of Energy Used Fuel Disposition Program Yifeng Wang (SNL) Michael Simpson (INL) Scott Painter (LANL) Hui-Hai Liu (LBNL) Annie B. Kersting (LLNL) July 15, 2011 FCRD-USED-2011-000223 UFD Natural System Evaluation - FY11 Year-End Report July 15, 2011 2 DISCLAIMER This information was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness, of any information, apparatus, product, or process disclosed, or represents that its use would not infringe

285

Lighting Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Purple LED lamp Purple LED lamp Lighting Systems Lighting research is aimed at improving the energy efficiency of lighting systems in buildings and homes across the nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research falls into four main areas: Sources and Ballasts, Light Distribution Systems, Controls and Communications, and Human Factors. Contacts Francis Rubinstein FMRubinstein@lbl.gov (510) 486-4096 Links Lighting Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and Heat Islands Demand Response Energy Efficiency Program and Market Trends

286

ARAC system  

SciTech Connect

In spite of the remarkable safety record of the nuclear industry as a whole, recent public concern over the potential impact of the industry's accelerated growth has prompted ERDA to expand its emergency response procedures. The Atmospheric Release Advisory Capability, ARAC, is a computer communications system designed to enhance the existing emergency response capability of ERDA nuclear facilities. ARAC will add at least two new functions to this capability: centralized, real-time data acquisition and storage, and simulation of the long range atmospheric transport of hazardous materials. To perform these functions, ARAC employs four major sub-systems or facilities: the site facility, the central facility, the global weather center and the regional model. The system has been under development for the past two years at the Lawrence Livermore Laboratory of the University of California. (auth)

Kelly, M.F.; Wyman, R.H.

1975-12-10T23:59:59.000Z

287

Suppression of the spin pumping in Pd/Ni{sub 81}Fe{sub 19} bilayers with nano-oxide layer  

SciTech Connect

We demonstrate that the spin pumping effect can be effectively suppressed with a nano-oxide layer. Spin pumping effect manifests itself by an enhancement of the Gilbert damping parameter in normal metal/ferromagnetic hetero-structures, while many spintronics devices prefer smaller damping parameter. Since the spin pumping effect is directly related with the spin dependent interface conductance, we can modify the spin pumping by altering the interface conductance with the nano-oxide layer. We prepared series of Pd/Ni{sub 81}Fe{sub 19} bilayers with different pausing time between Pd and Ni{sub 81}Fe{sub 19} depositions in order to control the interface conductance. The Gilbert damping parameters are determined from the line-width measurements in the ferromagnetic resonance spectra for each pausing time sample. They are 0.0490, 0.0296, 0.0278, and 0.0251 for 0, 6, 30, and 60 s pausing time, respectively. We find that the damping parameter of Pd/Ni{sub 81}Fe{sub 19} is almost recovered to one of the Cu/Ni{sub 81}Fe{sub 19} bilayer with 60 s pausing time, while the static magnetic properties are not noticeably changed.

Kim, Duck-Ho; Kim, Hong-Hyoun; You, Chun-Yeol [Department of Physics, Inha University, Namgu Incheon 402-751 (Korea, Republic of)

2011-08-15T23:59:59.000Z

288

Suppression of high-p{sub T} hadrons in Pb+Pb collisions at energies available at the CERN Large Hadron Collider  

Science Conference Proceedings (OSTI)

The nuclear modification factor R{sub AA}(p{sub T}) for large transverse momentum pion spectra in Pb+Pb collisions at {radical}(s)=2.76 TeV is predicted within the next-to-leading order perturbative QCD parton model. The effect of jet quenching is incorporated through medium-modified fragmentation functions within the higher-twist approach. The jet transport parameter that controls medium modification is proportional to the initial parton density, and the coefficient is fixed by data on the suppression of large-p{sub T} hadron spectra obtained at the BNL Relativistic Heavy Ion Collider. Data on charged hadron multiplicity dN{sub ch}/d{eta}=1584{+-}80 in central Pb+Pb collisions from the ALICE experiment at the CERN Large Hadron Collider are used to constrain the initial parton density both for determining the jet transport parameter and the 3 + 1 dimensional (3 + 1D) ideal hydrodynamic evolution of the bulk matter that is employed for the calculation of R{sub PbPb}(p{sub T}) for neutral pions.

Chen Xiaofang; Wang Enke; Zhang Hanzhong [Institute of Particle Physics, Huazhong Normal University, Wuhan 430079 (China); Hirano, Tetsufumi [Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan); Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Wang Xinnian [Institute of Particle Physics, Huazhong Normal University, Wuhan 430079 (China); Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2011-09-15T23:59:59.000Z

289

First Observation of the Cabibbo-suppressed Decays Xi+(c) ---> Sigma+ pi- pi+ and Xi+(c) ---> Sigma- pi+ pi+ and Measurement of their Branching Ratios  

Science Conference Proceedings (OSTI)

The authors report the first observation of two Cabibbo-suppressed decay modes, {Xi}{sub c}{sup +} {yields} {Sigma}{sup +}{pi}{sup -}{pi}{sup +} and {Xi}{sub c}{sup +} {yields} {Sigma}{sup -} {pi}{sup +}{pi}{sup +}. They observe 56 {+-} 13 over a background of 21, and 23 {+-} 7 over a background of 12 events, respectively, for the signals. The data were accumulated using the SELEX spectrometer during the 1996-1997 fixed target run at Fermilab, chiefly from a 600 GeV/c {Sigma}{sup -} beam. The branching ratios of the decays relative to the Cabibbo-favored {Xi}{sub c}{sup +} {yields} {Xi}{sup -}{pi}{sup +}{pi}{sup +} are measured to be B({Xi}{sub c}{sup +} {yields} {Sigma}{sup +}{pi}{sup -}{pi}{sup +})/B({xi}{sub c}{sup +} {yields} {Xi}{sup -} {pi}{sup +}{pi}{sup +}) = 0.50 {+-} 0.20, and B({Xi}{sub c}{sup +} {yields} {Sigma}{sup -}{pi}{sup +}{pi}{sup +})/B({Xi}{sub c}{sup +} {yields} {Xi}{sup -}{pi}{sup +}{pi}{sup +}) = 0.23 {+-} 0.11, respectively. They also report branching ratios for the same decay modes of the {Lambda}{sub c}{sup +} relative to {Lambda}{sub c}{sup +} {yields} pK{sup -}{pi}{sup +}.

Vazquez-Jauregui, E.; /San Luis Potosi U.; Engelfried, J.; /San Luis Potosi U.; Akgun, U.; /Iowa U.; Alkhazov, Georgiy; /St. Petersburg, INP; Amaro-Reyes, J.; /San Luis Potosi U.; Atamantchouk, A.G.; /St. Petersburg, INP; Ayan, Ahmet Sedat; /Iowa U.; Balatz, M.Y.; /Moscow, ITEP; Blanco-Covarrubias, A.; /San Luis Potosi U.; Bondar, N.F.; /St. Petersburg, INP; Cooper, Peter S.; /Fermilab /Michigan U., Flint

2008-04-01T23:59:59.000Z

290

BAE Systems  

E-Print Network (OSTI)

Information fusion system designs require sensor and resource management (SM) for effective and efficient data collection, processing, and dissemination. Common Level 4 fusion sensor management (or process refinement) inter-relations with target tracking and identification (Level 1 fusion) have been detailed in the literature. At the ISIF Fusion Conference, a panel discussion was held to examine the contemporary issues and challenges pertaining to the interaction between SM and situation and threat assessment (Level 2/3 fusion). This summarizes the key tenants of the invited panel experts. The common themes were: 1) Addressing the user in system control, 2) Determining a standard set of metrics,

Erik Blasch; John Salerno; Ivan Kadar; Ken Hintz; J. Biermann; Chee Chong; Subrata Das

2007-01-01T23:59:59.000Z

291

Spectral broadening and compression of high-intensity laser pulses in quasi-periodic systems with Kerr nonlinearity  

SciTech Connect

We report the results of theoretical studies and numerical simulations of optical high-power pulse compression systems based on the spectral broadening in a Kerr nonlinear medium with subsequent pulse compression in a dispersive delay line. It is shown that the effective spectral broadening requires suppressing a smallscale instability arising due to self-focusing, which is possible in quasi-periodic systems consisting of a nonlinear medium and optical relay telescopes transmitting images of the laser beam through the system. The numerical calculations have shown the possibility of broadening the spectrum, followed by 15-fold pulse compression until the instability is excited. (control of laser radiation parameters)

Vlasov, Sergei N; Koposova, E V; Yashin, V E

2012-11-30T23:59:59.000Z

292

Investigating Army systems and Systems of Systems for value robustness  

E-Print Network (OSTI)

This thesis proposes a value robustness approach to architect defense systems and Systems of Systems (SoS). A value robust system or SoS has the ability to provide continued value to stakeholders by performing well to meet ...

Koo, Kevin C. K. (Kevin Cheng Keong)

2010-01-01T23:59:59.000Z

293

Interferometric at-wavelength flare characterization of EUV optical systems  

DOE Patents (OSTI)

The extreme ultraviolet (EUV) phase-shifting point diffraction interferometer (PS/PDI) provides the high-accuracy wavefront characterization critical to the development of EUV lithography systems. Enhancing the implementation of the PS/PDI can significantly extend its spatial-frequency measurement bandwidth. The enhanced PS/PDI is capable of simultaneously characterizing both wavefront and flare. The enhanced technique employs a hybrid spatial/temporal-domain point diffraction interferometer (referred to as the dual-domain PS/PDI) that is capable of suppressing the scattered-reference-light noise that hinders the conventional PS/PDI. Using the dual-domain technique in combination with a flare-measurement-optimized mask and an iterative calculation process for removing flare contribution caused by higher order grating diffraction terms, the enhanced PS/PDI can be used to simultaneously measure both figure and flare in optical systems.

Naulleau, Patrick P. (Oakland, CA); Goldberg, Kenneth Alan (Berkeley, CA)

2001-01-01T23:59:59.000Z

294

US-DOE Fusion-Breeder Program: blanket design and system performance  

SciTech Connect

Conceptual design studies are being used to assess the technical and economic feasibility of fusion's potential to produce fissile fuel. A reference design of a fission-suppressed blanket using conventional materials is under development. Theoretically, a fusion breeder that incorporates this fusion-suppressed blanket surrounding a 3000-MW tandem mirror fusion core produces its own tritium plus 5600 kg of /sup 233/U per year. The /sup 233/U could then provide fissile makeup for 21 GWe of light-water reactor (LWR) power using a denatured thorium fuel cycle with full recycle. This is 16 times the net electric power produced by the fusion breeder (1.3 GWe). The cost of electricity from this fusion-fission system is estimated to be only 23% higher than the cost from LWRs that have makeup from U/sub 3/O/sub 8/ at present costs (55 $/kg). Nuclear performance, magnetohydrodynamics (MHD), radiation effects, and other issues concerning the fission-suppressed blanket are summarized, as are some of the present and future objectives of the fusion breeder program.

Lee, J.D.

1983-01-01T23:59:59.000Z

295

NREL: Energy Systems Integration - Energy Systems Integration...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Systems Integration Facility NREL's Energy Systems Integration Facility Garners LEED Platinum View the NREL Press Release. NREL's multistory Energy Systems Integration...

296

Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

GASIFICATION SYSTEMS GASIFICATION SYSTEMS U.S. DEPARTMENT OF ENERGY TECHNOLOGY PROGRAM PLAN PREFACE ii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any

297

Burner systems  

DOE Patents (OSTI)

A burner system particularly useful for downhole deployment includes a tubular combustion chamber unit housed within a tubular coolant jacket assembly. The combustion chamber unit includes a monolithic tube of refractory material whose inner surface defines the combustion zone. A metal reinforcing sleeve surrounds and extends the length of the refractory tube. The inner surface of the coolant jacket assembly and outer surface of the combustion chamber unit are dimensioned so that those surfaces are close to one another in standby condition so that the combustion chamber unit has limited freedom to expand with that expansion being stabilized by the coolant jacket assembly so that compression forces in the refractory tube do not exceed about one-half the safe compressive stress of the material; and the materials of the combustion chamber unit are selected to establish thermal gradient parameters across the combustion chamber unit to maintain the refractory tube in compression during combustion system start up and cool down sequences.

Doherty, Brian J. (Marblehead, MA)

1984-07-10T23:59:59.000Z

298

Fire suppressing apparatus. [sodium fires  

DOE Patents (OSTI)

Apparatus for smothering a liquid sodium fire comprises a pan, a perforated cover on the pan, and tubed depending from the cover and providing communication between the interior of the pan and the ambient atmosphere through the perforations in the cover. Liquid caught in the pan rises above the lower ends of the tubes and thus serves as a barrier which limits the amount of air entering the pan.

Buttrey, K.E.

1980-12-19T23:59:59.000Z

299

Drizzle Suppression in Ship Tracks  

Science Conference Proceedings (OSTI)

Although drizzle was a relatively infrequent occurrence during the Monterey Area Ship Track study, diverse measurements from several sources produced data signals consistent with a reduction in drizzle drops in stratus clouds affected by ship ...

Ronald J. Ferek; Timothy Garrett; Peter V. Hobbs; Scott Strader; Doug Johnson; Jonathan P. Taylor; Kurt Nielsen; Andrew S. Ackerman; Yefim Kogan; Qingfu Liu; Bruce A. Albrecht; David Babb

2000-08-01T23:59:59.000Z

300

ADVANCEMENT IN SUSTAINABLE FIRE SUPPRESSION ...  

Science Conference Proceedings (OSTI)

... Typically, gaskets and O-rings are not normally in constant direct contact with an agent. ... IO0 1 ' -12.6 +9.5 +10.6 EPDM 25 1 100 I ...

2011-10-20T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

CONTROL SYSTEM  

DOE Patents (OSTI)

A boiling water type nuclear reactor power system having improved means of control is described. These means include provisions for either heating the coolant-moderator prior to entry into the reactor or shunting the coolantmoderator around the heating means in response to the demand from the heat engine. These provisions are in addition to means for withdrawing the control rods from the reactor. (AEC)

Shannon, R.H.; Williamson, H.E.

1962-10-30T23:59:59.000Z

302

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1983-01-01T23:59:59.000Z

303

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1985-01-01T23:59:59.000Z

304

Integrated System  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Window System Our research activities in the field of high performance windows have led us to conclude that even by using high performance insulating glass units, low conductivity frames, and warm edge spacers, there are still untapped sources for improving energy efficiency in the design and use of residential windows. While such high performance windows are a dramatic improvement over conventional units, they do not reduce conductive losses through wall framing around the window, offer guarantees against excessive wall/window infiltration nor do they adapt to the daily and seasonal potentials for night insulation and summer shading. To meet this need, we have been working on the design, development, and prototyping of Integrated Window Systems (IWS) since 1993. Integrated Window Systems are a form of panelized construction where the wall panel includes an operable or fixed window sash, recessed night insulation, integral solar shading, and is built in a factory setting in order to minimize thermal short circuits and infiltration at joints. IWSs can be built in modular lengths to facilitate their installation with conventional wood frame stick construction or other forms of panelized construction.

305

Advanced Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimal gap width for double and triple glazing systems Optimal gap width for double and triple glazing systems Glazing systems in the US are commonly designed with a 1/2 " (12.7 mm) gap. The optimal gap width depends on many factors, such as gas fill (air, argon, krypton), the use of Low-e coatings, the environmental conditions (temperature difference across the window), and the calculation standard used. NFRC standard conditions are -18 C (-0.4 F) outside, and 21 C (69.8 F) inside. The calculation standard used in the US is based on the ISO 15099 standard. European standard conditions are 0 C (32 F) outside, and 20 C (68 F) inside. The calculation standard is based on the EN 673 standard. A number of common glazing configurations both with and without Low-e coatings, and with a variety of gas fills were evaluated using both the North American NFRC standard and the European EN 673 standard. All results were calculated using WINDOW 6.3 from LBNL. All IGU's (Insulated Glazing Units) have a standard height of 1 meter.

306

Braking system  

DOE Patents (OSTI)

A balanced braking system comprising a plurality of braking assemblies located about a member to be braked. Each of the braking assemblies consists of a spring biased piston of a first material fitted into a body of a different material which has a greater contraction upon cooling than the piston material. The piston is provided with a recessed head portion over which is positioned a diaphragm and forming a space therebetween to which is connected a pressurized fluid supply. The diaphragm is controlled by the fluid in the space to contact or withdraw from the member to be braked. A cooling means causes the body within which the piston is fitted to contract more than the piston, producing a tight shrink fit therebetween. The braking system is particularly applicable for selectively braking an arbor of an electron microscope which immobilizes, for example, a vertically adjustable low temperature specimen holder during observation. The system provides balanced braking forces which can be easily removed and re-established with minimal disturbance to arbor location.

Norgren, D.U.

1982-09-23T23:59:59.000Z

307

Sway control method and system for rotary cranes  

DOE Patents (OSTI)

Methods and apparatuses for reducing the oscillatory motion of rotary crane payloads during operator-commanded or computer-controlled maneuvers. An Input-shaping filter receives input signals from multiple operator input devices and converts them into output signals readable by the crane controller to dampen the payload tangential and radial sway associated with rotation of the jib. The input signals are characterized by a hub rotation trajectory .gamma.(t), which includes a jib angular acceleration .gamma., a trolley acceleration x, and a load-line length velocity L. The system state variables are characterized by a tangential rotation angle .theta.(t) and a radial rotation angle .phi.(t) of the load-line. The coupled equations of motion governing the filter are non-linear and configuration-dependent. In one embodiment, a filter is provided between the operator and the crane for filtering undesired frequencies from the angular .gamma. and trolley x velocities to suppress payload oscillation. In another embodiment, crane commands are computer generated and controlled to suppress vibration of the payload using a postulated asymmetrical shape for the acceleration profiles of the jib, which profiles are uniquely determined by a set of parameters (including the acceleration pulse amplitude and the duration and coast time between pulses), or a dynamic programming approach.

Robinett, Rush D. (Tijeras, NM); Parker, Gordon G. (Houghton, MI); Feddema, John T. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Petterson, Ben J. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

308

Quantum bath-driven decoherence of mixed spin systems  

E-Print Network (OSTI)

The decoherence of mixed electron-nuclear spin qubits is a topic of great current importance, but understanding is still lacking: while important decoherence mechanisms for spin qubits arise from quantum spin bath environments with slow decay of correlations, the only analytical framework for explaining observed sharp variations of decoherence times with magnetic field is based on the suppression of classical noise. Here we obtain a general expression for decoherence times of the central spin system which exposes significant differences between quantum-bath decoherence and decoherence by classical field noise. We perform measurements of decoherence times of bismuth donors in natural silicon using both electron spin resonance (ESR) and nuclear magnetic resonance (NMR) transitions, and in both cases find excellent agreement with our theory across a wide parameter range. The universality of our expression is also tested by quantitative comparisons with previous measurements of decoherence around `optimal working points' or `clock transitions' where decoherence is strongly suppressed. We further validate our results by comparison to cluster expansion simulations.

S. J. Balian; Gary Wolfowicz; John J. L. Morton; T. S. Monteiro

2013-02-07T23:59:59.000Z

309

Advanced coal-fueled industrial cogeneration gas turbine system particle removal system development  

SciTech Connect

Solar Turbines developed a direct coal-fueled turbine system (DCFT) and tested each component in subscale facilities and the combustion system was tested at full-scale. The combustion system was comprised of a two-stage slagging combustor with an impact separator between the two combustors. Greater than 90 percent of the native ash in the coal was removed as liquid slag with this system. In the first combustor, coal water slurry mixture (CWM) was injected into a combustion chamber which was operated loan to suppress NO{sub x} formation. The slurry was introduced through four fuel injectors that created a toroidal vortex because of the combustor geometry and angle of orientation of the injectors. The liquid slag that was formed was directed downward toward an impaction plate made of a refractory material. Sixty to seventy percent of the coal-borne ash was collected in this fashion. An impact separator was used to remove additional slag that had escaped the primary combustor. The combined particulate collection efficiency from both combustors was above 95 percent. Unfortunately, a great deal of the original sulfur from the coal still remained in the gas stream and needed to be separated. To accomplish this, dolomite or hydrated lime were injected in the secondary combustor to react with the sulfur dioxide and form calcium sulfite and sulfates. This solution for the sulfur problem increased the dust concentrations to as much as 6000 ppmw. A downstream particulate control system was required, and one that could operate at 150 psia, 1850-1900{degrees}F and with low pressure drop. Solar designed and tested a particulate rejection system to remove essentially all particulate from the high temperature, high pressure gas stream. A thorough research and development program was aimed at identifying candidate technologies and testing them with Solar`s coal-fired system. This topical report summarizes these activities over a period beginning in 1987 and ending in 1992.

Stephenson, M.

1994-03-01T23:59:59.000Z

310

Components of systems software for parallel systems  

Science Conference Proceedings (OSTI)

Systems software for clusters and other parallel systems affects multiple types of users. End users interact with it to submit and interact with application jobs and to avail themselves of scalable system tools. Systems administrators interact with it ...

Ewing Lusk

2005-09-01T23:59:59.000Z

311

Galileon forces in the Solar System  

E-Print Network (OSTI)

We consider the challenging problem of obtaining an analytic understanding of realistic astrophysical dynamics in the presence of a Vainshtein screened fifth force arising from infrared modifications of General Relativity. In particular, we attempt to solve -- within the most general flat spacetime galileon model -- the scalar force law between well separated bodies located well within the Vainshtein radius of the Sun. To this end, we derive the exact static Green's function of the galileon wave equation linearized about the background field generated by the Sun, for the minimal cubic and maximally quartic galileon theories, and then introduce a method to compute the general leading order force law perturbatively away from these limits. We also show that the same nonlinearities which produce the Vainshtein screening effect present obstacles to an analytic calculation of the galileon forces between closely bound systems within the solar system, such as that of the Earth and Moon. Within the test mass approximation, we deduce that a large enough quartic galileon interaction would suppress the effect on planetary perihelion precession below the level detectable by even the next-generation experiments.

Melinda Andrews; Yi-Zen Chu; Mark Trodden

2013-05-09T23:59:59.000Z

312

Galileon Forces in the Solar System  

E-Print Network (OSTI)

We consider the challenging problem of obtaining an analytic understanding of realistic astrophysical dynamics in the presence of a Vainshtein screened fifth force arising from infrared modifications of General Relativity. In particular, we attempt to solve -- within the most general flat spacetime galileon model -- the scalar force law between well separated bodies located well within the Vainshtein radius of the Sun. To this end, we derive the exact static Green's function of the galileon wave equation linearized about the background field generated by the Sun, for the minimal cubic and maximally quartic galileon theories, and then introduce a method to compute the general leading order force law perturbatively away from these limits. We also show that the same nonlinearities which produce the Vainshtein screening effect present obstacles to an analytic calculation of the galileon forces between closely bound systems within the solar system, such as that of the Earth and Moon. Within the test mass approximation, we deduce that a large enough quartic galileon interaction would suppress the effect on planetary perihelion precession below the level detectable by even the next-generation experiments.

Melinda Andrews; Yi-Zen Chu; Mark Trodden

2013-05-09T23:59:59.000Z

313

Advanced Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Glazing Systems Glazing Systems Using Non-Structural Center Glazing Layers Windows in the United States use aproximately 2 quads a year in heating energy, approximately one third of all building space heating energy used and the largest single end use attributed to windows. Even if all existing windows were replaced with todayÂ’s ENERGY STAR low-e products (U values < 0.35 Btu/hr-ft2-F), windows related heating would still be over 1 Quad. Because heating loads are strongly tied to conductive losses, technologies which lead to lower window U-factors are the key to reducing heating energy. A 0.1 Btu/hr-ft2-F window is targeted as a product, which will meet the requirements of zero-energy homes. Dynamic control of solar gains will further reduce heating needs by allowing winter solar heat gains to be effectively utilized while limiting cooling season gains. Significant cooling load savings can also be expected from lower U-factor windows in certain climates and from dynamic windows in all climates.

314

The mechanism of recA polA lethality: Suppression by RecA-independent recombination repair activated by the lexA(Def) mutation in Escherichia coli  

SciTech Connect

The mechanism of recA polA lethality in Escherichia coli has been studied. Complementation tests have indicated that both the 5{prime} {yields} 3{prime} exonuclease and the polymerization activities of DNA polymerase I are essential for viability in the absence of RecA protein, whereas the viability and DNA replication of DNA polymerase I-defective cells depend on the recombinase activity of RecA. An alkaline sucrose gradient sedimentation analysis has indicated that RecA has only a minor role in Okazaki fragment processing. Double-strand break repair is proposed for the major role of RecA in the absence of DNA polymerase I. The lexA(Def)::Tn5 mutation has previously been shown to suppress the temperature-sensitive growth of recA200(Ts) polA25::spc mutants. The lexA(Def) mutation can alleviate impaired DNA synthesis in the recA200(Ts) polA25::spc mutant cells at the restrictive temperature. recF{sup +} is essential for this suppression pathway, recJ and recQ mutations have minor but significant adverse effects on the suppression. The recA200(Ts) allele in the recA200(Ts) polA25::spc lexA(Def) mutant can be replaced by {Delta}recA, indicating that the lexA(Def)-induced suppression is RecA independent. lexA(Def) reduces the sensitivity of {Delta}recA polA25::spc cells to UV damage by {approximately}10{sup 4}-fold. lexA(Def) also restores P1 transduction proficiency to the {Delta}recA polA25::spc mutant to a level that is 7.3% of the recA{sup +} wild type. These results suggest that lexA(Def) activates a RecA-independent, RecF-dependent recombination repair pathway that suppresses the defect in DNA replication in recA polA double mutants. 52 refs., 7 figs., 5 tabs.

Cao, Yang; Kogoma, Tokio [Univ. of New Mexico Health Sciences Center, Albuquerque, NM (United States)

1995-04-01T23:59:59.000Z

315

Battery system  

SciTech Connect

This patent describes a battery system for use with a battery powered device. It comprises a battery pack, the battery pack including; battery cells; positive and negative terminals serially coupled to the battery cells, the positive terminal being adapted to deliver output current to a load and receive input current in the direction of charging current; circuit means coupled to the positive and negative terminals and producing at an analog output terminal an analog output signal related to the state of charge of the battery cells; and display means separate from the battery pack and the battery powered device and electrically coupled to the analog output terminal for producing a display indicating the state of charge of the battery cells in accordance with the analog output signal.

Sokira, T.J.

1991-10-15T23:59:59.000Z

316

Transfer system  

DOE Patents (OSTI)

A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

Kurosawa, Kanji (Tokyo, JP); Koga, Bunichiro (Miyagi, JP); Ito, Hideki (Miyagi, JP); Kiriyama, Shigeru (Miyagi, JP); Higuchi, Shizuo (Kanagawa, JP)

2003-05-20T23:59:59.000Z

317

Phase II Study of Long-Term Androgen Suppression With Bevacizumab and Intensity-Modulated Radiation Therapy (IMRT) in High-Risk Prostate Cancer  

Science Conference Proceedings (OSTI)

Purpose: We report a Phase II trial assessing the acute and late toxicities of intensity-modulated radiation therapy (IMRT), long-term androgen suppression (LTAS), and bevacizumab in patients with high-risk localized prostate cancer. Methods and Materials: We treated 18 patients with LTAS with bicalutamide and goserelin in combination with bevacizumab and IMRT. Bevacizumab (10 mg/kg every 2 weeks) was administered for the first 16 weeks, and 15 mg/kg was then given every 3 weeks for 12 additional weeks, with an IMRT dose of 77.9 Gy to the prostate, 64.6 Gy to the seminal vesicles, and 57 Gy to the pelvic lymph nodes. Patients were eligible if they had clinical stage T2b to T4, a Gleason sum score of 8 to 10, or a prostate- specific antigen level of 20ng/mL or greater. The primary endpoint of the study was evaluation of acute and late toxicities. Results: The median age was 69 years, with a median pretreatment prostate-specific antigen level of 12.5 ng/mL and Gleason score of 8. The pretreatment clinical stage was T1c in 4 patients, T2 in 11, and T3 in 3. All patients completed IMRT with median follow-up of 34 months (range, 28-40 months) The most common Grade 2 or higher toxicities were hypertension (61% of patients with Grade 2 and 11% with Grade 3), proteinuria (28% with Grade 2 and 6% with Grade 3), and leucopenia (28% with Grade 2). No Grade 4 or higher acute toxicities were reported. Late toxicities included proctitis (6% of patients with Grade 2 and 11% with Grade 3), rectal bleeding (6% with Grade 2 and 11% with Grade 3), hematuria (6% with Grade 2), proteinuria (17% with Grade 2), hyponatremia (6% with Grade 3), cystitis (6% with Grade 3), and urinary retention (6% with Grade 2 and 11% with Grade 3). Grade 4 prostatitis occurred in 1 patient (6%). Conclusions: Bevacizumab does not appear to exacerbate the acute effects of IMRT. Late toxicities may have been worsened with this regimen. Further investigations of bevacizumab with LTAS and IMRT should be performed cautiously.

Vuky, Jacqueline, E-mail: vukyja@ohsu.edu [Section of Community Hematology/Oncology, Knight Cancer Institute, Oregon Health Sciences University, Portland, OR (United States); Pham, Huong T. [Section of Hematology/Oncology and Radiation Oncology, Virginia Mason Medical Center, Seattle, WA (United States); Warren, Sarah; Douglass, Erika [Benaroya Research Institute, Virginia Mason Medical Center, Seattle, WA (United States); Badiozamani, Kasra [Section of Hematology/Oncology and Radiation Oncology, Virginia Mason Medical Center, Seattle, WA (United States); Madsen, Berit; Hsi, Alex [Peninsula Cancer Center, Poulsbo, WA (United States); Song Guobin [Section of Hematology/Oncology and Radiation Oncology, Virginia Mason Medical Center, Seattle, WA (United States)

2012-03-15T23:59:59.000Z

318

Environmental Management System  

NLE Websites -- All DOE Office Websites (Extended Search)

Video Community, Environment Environmental Stewardship Environmental Protection Environmental Management System Environmental Management System An Environmental...

319

Systems Infrastructure (SYS 18)  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure John Hicks, Karencomponents The Systems Infrastructure team assembles, tests,

Richard Guy; John Hicks; Karen Weeks

2006-01-01T23:59:59.000Z

320

SYS 5: Systems Infrastructure  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure Kevin Chang, Johnnents The Systems Infrastructure team assembles, tests, and

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Context: Small Flames  

Science Conference Proceedings (OSTI)

... of Two Halon Replacement Gases Blended With ... Results From the Dispersed Liquid Agent Fire ... a Laminar Opposed-Flow Natural Gas/Air Diffusion ...

2012-03-20T23:59:59.000Z

322

REDUCING HYDROGEN FLUORIDE AND OTHER ...  

Science Conference Proceedings (OSTI)

... with Halons 1301 and 121 I), as well as carbonyl fluoride (COFz) are ... Figures 6 and 7 show typical test results for calcium carbonate and potassium ...

2011-11-03T23:59:59.000Z

323

Reference Tools  

NLE Websites -- All DOE Office Websites (Extended Search)

Reference Tools Current Greenhouse Gas Concentrations Name that compound: The numbers game for CFCs, HFCs, HCFCs, and Halons Conversion Tables and More Glossary Acronyms CDIAC's...

324

NMERI 2003/1/34051 FLUOROALKYL PHOSPHORUS ...  

Science Conference Proceedings (OSTI)

... SUBJECT TERMS phosphorus, fluoroalkyl, fire, extinguishment, halon ... is complete by the time the products enter ... the results of the search have been ...

2013-10-26T23:59:59.000Z

325

EVALUATION OF SELECTED NFPA 2001 AGENTS FOR ...  

Science Conference Proceedings (OSTI)

... This is a typical energy level ... "V I 2001 Agents,;' 1993 CFC & Halon Alternatives CGnference, Hilton Hotel, Washington, DC, 20-22 Oct. 1993. ...

2011-10-13T23:59:59.000Z

326

Deployment: Flooding  

Science Conference Proceedings (OSTI)

... of the Halon Replacement Program for Army Ground Combat Vehicles ... Gas Measurement Using FTIR, GC/MS and Ion Selective Electrode Methods ...

2012-03-20T23:59:59.000Z

327

Entanglement preservation for multilevel systems under non-ideal pulse control  

E-Print Network (OSTI)

We investigate how to effectively preserve the entanglement between two noninteracting multilevel oscillators coupled to a common reservoir under non-ideal pulse control. A universal characterization using fidelity is developed for the behavior of the system based on Nakajima-Zwanzig projection operator technique. Our analysis includes the validity of the approximation method and the decoherence-suppression by the non-ideal pulse control. The power of our strategy for protecting entanglement is numerically tested, showing potential applications for quantum information processing.

Xu, Z Y

2010-01-01T23:59:59.000Z

328

Entanglement preservation for multilevel systems under non-ideal pulse control  

E-Print Network (OSTI)

We investigate how to effectively preserve the entanglement between two noninteracting multilevel oscillators coupled to a common reservoir under non-ideal pulse control. A universal characterization using fidelity is developed for the behavior of the system based on Nakajima-Zwanzig projection operator technique. Our analysis includes the validity of the approximation method and the decoherence-suppression by the non-ideal pulse control. The power of our strategy for protecting entanglement is numerically tested, showing potential applications for quantum information processing.

Z. Y. Xu; M. Feng

2010-05-18T23:59:59.000Z

329

Optimization of AC Dipole Parameters for the Mu2e Extinction System  

SciTech Connect

The Mu2e experiment is being planned at Fermilab to measure the rate for muons to convert to electrons in the field of an atomic nucleus with unprecedented precision. This experiment uses an 8 GeV primary proton beam consisting of short ({approx}200 nsec FW) bunches, separated by 1.7 {mu}sec. It is vital that out-of-bunch beam be suppressed at the level of 10{sup -10} or less. This poster describes the parametric analysis which was done to determine the optimum harmonics and magnet specifications for this system, as well as the implications for the beam line optics.

Prebys, E.; /Fermilab

2012-05-01T23:59:59.000Z

330

ANALYSIS OF CONTROL SYSTEMS FOR VEHICLE HYBRID POWERTRAINS  

E-Print Network (OSTI)

Abstract. Ecological and socioeconomic factors determine high interest in the development of pollution-free vehicles. At present use of electro-vehicles is suppressed by a number of technological factors. Vehicles with alternative powertrains are transitional stage between development of pollution-free vehicles and vehicles with conventional internal combustion engine. According to these aspects the investigation on conventional hybrid drives and their control systems is carried out in the article. The equations that allow evaluating effectiveness of regenerative braking for different variants of hybrid drive are given. The AMESim software is used as the modeling environment, in which models of hybrid vehicles are developed and the results of virtual simulation are analyzed. Also a number of recommendations for increasing of regenerative braking effectiveness are given.

Siarhei Kliauzovich

2007-01-01T23:59:59.000Z

331

NREL: Energy Systems Integration - Energy Systems Integration...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Systems Integration Facility Newsroom The Energy Systems Integration Facility (ESIF) will be one of the only megawatt-scale test facilities in the United States that...

332

Alpha-Particle Condensation in Nuclear Systems  

E-Print Network (OSTI)

The onset of quartetting, i.e. alpha-particle condensation, in symmetric nuclear matter is studied with the help of an in-medium modified four nucleon equation. It is found that at very low density quartetting wins over pairing, because of the strong binding of the alpha-particles. The critical temperature can reach values up to around 6 MeV. Also the disappearance of alpha-particles with increasing density, i.e. the Mott transition, is investigated. In finite nuclei the Hoyle state, that is the 0_2^+ of 12C, is identified as an "alpha-particle condensate" state. It is conjectured that such states also exist in heavier n alpha-nuclei, like 16O, 20Ne, etc. For instance the 6-th 0^+ state of 16O at 15.1 MeV is identified from a theoretical analysis as being a strong candidate for an alpha condensate state. Exploratory calculations are performed for the density dependence of the alpha condensate fraction at zero temperature to address the suppression of the four-particle condensate below nuclear-matter density. Possible quartet condensation in other systems is discussed briefly

Y. Funaki; T. Yamada; H. Horiuchi; G. Röpke; P. Schuck; A. Tohsaki

2008-09-03T23:59:59.000Z

333

NERSC Computational Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

My NERSC Getting Started Computational Systems Edison Hopper Carver Dirac PDSF Genepool Testbeds Retired Systems Data & File Systems Network Connections Queues and Scheduling Job...

334

Minimal fusion systems.  

E-Print Network (OSTI)

??We define minimal fusion systems in a way that every non-solvable fusion system has a section which is minimal. Minimal fusion systems can also be… (more)

Henke, Ellen

2010-01-01T23:59:59.000Z

335

Laser Music System.  

E-Print Network (OSTI)

?? A Laser Music System has been created, that combines a laser and light sensor system with an infrared distance sensing system that detects the… (more)

Woodruff, Astra

2012-01-01T23:59:59.000Z

336

Communication Systems Chair of Communication Systems  

E-Print Network (OSTI)

, porn sites, web services, ... :-)) #12;8 | 28 Communication Systems network insecurity Inner and intra

Schindelhauer, Christian

337

TRANSPORTATION SYSTEMS Transportation systems are the building  

E-Print Network (OSTI)

TRANSPORTATION SYSTEMS Transportation systems are the building blocks of modern society. Efficient mobility improves the quality of life. However, transportation systems by their very nature also affect quality. The transportation systems graduate pro- gram provides in-depth knowledge on the design

Wang, Yuhang

338

Complex System Classification  

E-Print Network (OSTI)

The use of terms such as “Engineering Systems”, “System of systems” and others have been coming into greater use over the past decade to denote systems of importance but with implied higher complexity than for the term ...

Magee, Christopher

2004-07-24T23:59:59.000Z

339

A Direct Error Measure for Affine Models of Nonlinear Algebraic Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

A Direct Error Measure for Affine Models of Nonlinear Algebraic Systems A Direct Error Measure for Affine Models of Nonlinear Algebraic Systems Speaker(s): David Lorenzetti Date: June 2, 1999 - 12:00pm Location: Bldg. 90 The Newton-Raphson solution of a nonlinear system iterately linearizes the equations, then steps to the solution of the resulting affine model. When a step exceeds the predictive range of its model, the method can diverge. The traditional response -- aggregating the equations into a cost function, and applying a minimization method -- suppresses information about how each equation model performs. Direct error measures examine the equations individually, allowing finer control over step lengths. The seminar will develop one such measure through the geometry of simple one- and two-dimensional examples, then present results from a suite of larger

340

Systems Engineering Group  

Science Conference Proceedings (OSTI)

... advances, and deploys measurement science to address application of engineering information systems to complex cyber-physical systems. ...

2011-10-03T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Networked Control Systems Group  

Science Conference Proceedings (OSTI)

... and deploys measurement science for sensor networks and control systems used in manufacturing, construction, and other cyber-physical systems ...

2012-08-30T23:59:59.000Z

342

Systems Integration Division Homepage  

Science Conference Proceedings (OSTI)

... systems integration and engineering, life cycle assessment, cyber-physical systems, productivity measurement, sustainability and energy efficiency. ...

2013-09-16T23:59:59.000Z

343

Complex Systems Program Homepage  

Science Conference Proceedings (OSTI)

... Systems Program seeks to understand the fundamental science of these ... Complex Systems Fundamentals Roldan Pozo; Measurement Science for ...

2011-12-28T23:59:59.000Z

344

Public Safety Communication Systems  

Science Conference Proceedings (OSTI)

... integrate legacy communication and information systems and ... will support system analysis and troubleshooting ... create a global market for equipment ...

2012-12-13T23:59:59.000Z

345

NETL: Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Brochures Gasification Systems Reference Shelf - Brochures The Gasification Technology brochures are as follows: Gasification Plant Databases (Aug 2013) Gasification Systems...

346

Environmental Management Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Environmental Management Systems Technical Assistance Tools Technical Assistance Tool: Integrating Sustainable Practices into Environmental Management Systems , November 2009...

347

Sensors, Instrumentation Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Sensors, Instrumentation Systems science-innovationassetsimagesicon-science.jpg Sensors, Instrumentation Systems National security depends on science and technology. The...

348

Suppression of magnetism and development of superconductivity within the collapsed tetragonal phase of Ca[subscript 0.67]Sr[subscript 0.33]Fe[subscript 2]As[subscript 2] under pressure  

Science Conference Proceedings (OSTI)

Structural and electronic characterizations of (Ca{sub 0.67}Sr{sub 0.33})Fe{sub 2}As{sub 2} have been performed as a function of pressure up to 12 GPa using conventional and designer diamond anvil cells. The compound (Ca{sub 0.67}Sr{sub 0.33})Fe{sub 2}As{sub 2} behaves intermediately between its end members, displaying a suppression of magnetism and the onset of superconductivity. Like other members of the AFe{sub 2}As{sub 2} family, (Ca{sub 0.67}Sr{sub 0.33})Fe{sub 2}As{sub 2} undergoes a pressure-induced isostructural volume collapse, which we associate with the development of As-As bonding across the mirror plane of the structure. This collapsed tetragonal phase abruptly cuts off the magnetic state and supports superconductivity with a maximum T{sub c} = 22.2 K. The maximum T{sub c} of the superconducting phase is not strongly correlated with any structural parameter, but its proximity to the abrupt suppression of magnetism as well as the volume-collapse transition suggests that magnetic interactions and structural inhomogeneity may play a role in its development.

Jeffries, J.R.; Butch, N.P.; Kirshenbaum, K.; Saha, S.R.; Samudrala, G.; Weir, S.T.; Vohra, Y.K.; Paglione, J. (LLNL); (UAB); (Maryland)

2012-10-24T23:59:59.000Z

349

Solvation Effects in Self-Assembled Systems  

SciTech Connect

Many types of self-assembly can be found in nature. They include crystallization, the formation of micelles, and the folding of proteins. Recently there has been much interest in pursuing nano-to-microscopically engineered materials by way of self-assembly on imprinted or templated surfaces. In all of these diverse cases, wetting plays a critical role in the assembly process. Wetting involves the interactions of the substrate or amphiphilic molecule or macromolecule with a solvent. In many self-assembled systems we find that the critical feature of the system is a substrate! or macromolecule with a both hydrophilic and hydrophobic nature. In this paper we discuss the wetting properties of a striped surface where the stripes represent alternating chemical characteristics. We show how the chemical heterogeneity affects the wetting properties of the surface (e.g. the static contact angle), and discuss the length limitations on the soft lithography approach. In this paper, the wetting of a chemically heterogeneous surface is studied using a nonlocal Density Functional Theory (DFT). The results for the heterogeneous surface model we discuss have immediate implications for soft-lithography by self-assembly. It also lends fundamental insight into the mechanisms controlling self-assembly of macromolecules. We present the results of nonlocal 2D DFT calculations on the wetting properties of chemically heterogeneous surfaces. These calculations showed complex density distributions and phase behavior as a result of the heterogeneity. The location of the wetting transition are found to be strongly dependent on the extent and strength of the heterogeneity, and complete wetting was suppressed altogether if the hydrophobic parts of the surface were large enough. In these cases, the condensed nanophase may crystallize if the hydrophilic surface-fluid interactions are strong enough. By exploring the phase space including strength of hydrophilic interactions and extent of chemical heterogeneity, an operational phase diagram was established that could be used for designing nanoscopically tailored devices and materials.

Frink, L.J.D.

1998-11-10T23:59:59.000Z

350

System Demonstration Multilingual Weather Forecast Generation System  

E-Print Network (OSTI)

System Demonstration Multilingual Weather Forecast Generation System Tianfang Yao DongmoZhang Qian (Multilingual Weather Forecasts Assistant) system will be demonstrated. It is developed to generate the multilingual text of the weather forecasts automatically. The raw data from the weather observation can be used

351

Energy Systems Integration  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Systems Integration Systems Integration Ben Kroposki, PhD, PE Director, Energy Systems Integration National Renewable Energy Laboratory 2 Reducing investment risk and optimizing systems in a rapidly changing energy world * Increasing penetration of variable RE in grid * Increasing ultra high energy efficiency buildings and controllable loads * New data, information, communications and controls * Electrification of transportation and alternative fuels * Integrating energy storage (stationary and mobile) and thermal storage * Interactions between electricity/thermal/fuels/data pathways * Increasing system flexibility and intelligence Current Energy Systems Future Energy Systems Why Energy Systems Integration? 3 Energy Systems Integration Continuum Scale Appliance (Plug)

352

Systems Analysis Workshop Purpose  

NLE Websites -- All DOE Office Websites (Extended Search)

National Renewable Energy Laboratory National Renewable Energy Laboratory DOE Hydrogen Program DOE Hydrogen Program Systems Analysis Workshop Systems Analysis Workshop Systems Integration Production Delivery Conversion Application Education Codes & Standards Safety Tech Validation Storage Systems Integration Production Delivery Conversion Application Education Codes & Standards Safety Tech Validation Storage Washington D.C. 28-29 Jul 04 Dale Gardner Systems Integration Operated for the U.S. Department of Energy by Midwest Research Institute * Battelle 2 Systems Analysis Workshop Topics * Meeting Goals * Systems Integration * Roles/Responsibilities of Analysis Participants * Systems Analysis * From this Workshop * Capability Presentations 3 Systems Analysis Workshop Meeting Goals 1) Understand the roles and activities of the DOE Technology Analyst,

353

Learning classifier systems  

Science Conference Proceedings (OSTI)

This tutorial gives an introduction to Learning Classifier Systems focusing on the Michigan-Style type and XCS in particular. The objective is to introduce (1) where LCSs come from, (2) how LCSs generally work, (3) which different systems exist, (4) ... Keywords: adaptive systems, cognitive systems, datamining, function approximation, genetic algorithms, learning classifier systems, machine learning, regression, reinforcement learning

Martin V. Butz

2010-07-01T23:59:59.000Z

354

Evaluation of systems usability  

Science Conference Proceedings (OSTI)

Motivation -- Development of complex system interfaces can benefit, in addition to the traditional safety focused evaluation, also from a usability approach to evaluation of system performance. But as the users, the information system, and the ... Keywords: activity theory, complex systems, joint cognitive systems, usability evaluation

Paula Savioja; Leena Norros; Leena Salo

2008-01-01T23:59:59.000Z

355

Lighting system with thermal management system  

DOE Patents (OSTI)

Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

2013-05-07T23:59:59.000Z

356

Hybrid Systems Diagnosis  

Science Conference Proceedings (OSTI)

This paper reports on an on-going project to investigate techniques to diagnose complex dynamical systems that are modeled as hybrid systems. In particular, we examine continuous systems with embedded supervisory controllers that experience abrupt, partial ...

Sheila A. McIlraith; Gautam Biswas; Dan Clancy; Vineet Gupta

2000-03-01T23:59:59.000Z

357

Concentrator Photovoltaic Systems  

Energy.gov (U.S. Department of Energy (DOE))

Concentrator photovoltaic (PV) systems use less solar cell material than other PV systems. PV cells are the most expensive components of a PV system, on a per-area basis. A concentrator makes use...

358

Steam System Optimization  

E-Print Network (OSTI)

Most plant steam systems are complex systems. Usually the fuel required to produce the steam represents a major expense for manufacturing facilities. By properly operating and maintaining the steam system and making minor improvements, significant savings can be realized.

Aegerter, R. A.

1998-04-01T23:59:59.000Z

359

Data & File Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Data Management Policies NERSC File Systems HPSS Data Archive Optimizing IO performance on the Lustre file system IO Formats Sharing Data Transferring Data Unix Groups at NERSC...

360

Manufacturing Skills Certification System  

Science Conference Proceedings (OSTI)

... system to their business so that they utilize the skills certification system ... provide input to The Manufacturing Institute about aggregate skill needs of ...

2012-09-20T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Usability for Biometric Systems  

Science Conference Proceedings (OSTI)

... to improve the usability of biometric systems, it is ... users will have with a system, including the hardware, software and instructional design of a ...

2010-10-05T23:59:59.000Z

362

Jobstream Separator System Design  

Science Conference Proceedings (OSTI)

... any unprivileged PDP-11/45 machine instruction or invoke ... are not an inherent part of the JSS system. ... Four of the six systems are }~C, SAC, NORAD ...

2013-04-15T23:59:59.000Z

363

Sustainable Energy Systems Group  

NLE Websites -- All DOE Office Websites (Extended Search)

Sustainable Energy Systems Group The Sustainable Energy Systems Group studies the impacts of energy generation and use, manufacturing, and other activities on the environment, the...

364

Control system design method  

Science Conference Proceedings (OSTI)

A control system design method and concomitant control system comprising representing a physical apparatus to be controlled as a Hamiltonian system, determining elements of the Hamiltonian system representation which are power generators, power dissipators, and power storage devices, analyzing stability and performance of the Hamiltonian system based on the results of the determining step and determining necessary and sufficient conditions for stability of the Hamiltonian system, creating a stable control system based on the results of the analyzing step, and employing the resulting control system to control the physical apparatus.

Wilson, David G. (Tijeras, NM); Robinett, III, Rush D. (Tijeras, NM)

2012-02-21T23:59:59.000Z

365

Umbra's system representation.  

SciTech Connect

This document describes the Umbra System representation. Umbra System representation, initially developed in the spring of 2003, is implemented in Incr/Tcl using concepts borrowed from Carnegie Mellon University's Architecture Description Language (ADL) called Acme. In the spring of 2004 through January 2005, System was converted to Umbra 4, extended slightly, and adopted as the underlying software system for a variety of Umbra applications that support Complex Systems Engineering (CSE) and Complex Adaptive Systems Engineering (CASE). System is now a standard part Of Umbra 4. While Umbra 4 also includes an XML parser for System, the XML parser and Schema are not described in this document.

McDonald, Michael James

2005-07-01T23:59:59.000Z

366

Euclid File Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Request Form Euclid File Systems Euclid has 3 kinds of file systems available to users: home directories, scratch directories and project directories, all provided by the NERSC...

367

Underwater Glider System Study  

E-Print Network (OSTI)

Leonard, N. E. , “ONR Underwater Glider Systems Study GliderDavis. The Autonomous Underwater Glider Spray. IEEE Journalto the ONR Committee for Underwater Glider Systems Study,

2003-01-01T23:59:59.000Z

368

Training Management System  

NLE Websites -- All DOE Office Websites (Extended Search)

Beam Time ESAF Contacts Calendars User Community Scientific Access Site AccessVisit Training Training Management System Argonne system used to track training requirements and...

369

Phase Diagram of KxFe2-ySe2-zSz and the Suppression of its Superconducting State by an Fe2-Se=S Tetrahedron Distortion  

Science Conference Proceedings (OSTI)

We report structurally tuned superconductivity in a K{sub x}Fe{sub 2-y}Se{sub 2-z}S{sub z} (0 {le} z {le} 2) phase diagram. Superconducting T{sub c} is suppressed as S is incorporated into the lattice, eventually vanishing at 80% of S. The magnetic and conductivity properties can be related to stoichiometry on a poorly occupied Fe1 site and the local environment of a nearly fully occupied Fe2 site. The decreasing T{sub c} coincides with the increasing Fe1 occupancy and the overall increase in Fe stoichiometry from z = 0 to z = 2. Our results indicate that the irregularity of the Fe2-Se/S tetrahedron is an important controlling parameter that can be used to tune the ground state in the new superconductor family.

Lei H.; Abeykoon, M.; Bozin, E.S.; Wang, K.; Warren, J.B.; Petrovic, C.

2011-09-19T23:59:59.000Z

370

Phase Diagram of KxFe2-ySe2-zSz and the Suppression of its Superconducting State by an Fe2-Se/S Tetrahedron Distortion  

SciTech Connect

We report structurally tuned superconductivity in a K{sub x}Fe{sub 2-y}Se{sub 2-z}S{sub z} (0 {le} z {le} 2) phase diagram. Superconducting T{sub c} is suppressed as S is incorporated into the lattice, eventually vanishing at 80% of S. The magnetic and conductivity properties can be related to stoichiometry on a poorly occupied Fe1 site and the local environment of a nearly fully occupied Fe2 site. The decreasing T{sub c} coincides with the increasing Fe1 occupancy and the overall increase in Fe stoichiometry from z = 0 to z = 2. Our results indicate that the irregularity of the Fe2-Se/S tetrahedron is an important controlling parameter that can be used to tune the ground state in the new superconductor family.

H Lei; M Abeykoon; E Bozin; K Wang; J Warren; C Petrovic

2011-12-31T23:59:59.000Z

371

U.S. Department of Energy NEPA Categorical Exclusion Determination Form  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Randolph Randolph Location: County Randolph NC American Recovery and Reinvestment Act: Proposed Action or Project Description: Conduct energy audits of six county facilities and create a sustainable energy plan and EEC strategy, 2) lower and replace ceiling and add air return ducting system at the Department of Social Services Building (1997), 3) replace boiler and upgrade climate control system at the County Jail (1997), 4) replace interior lights, climate control, HVAC units, Halon system, and emergency generator at the Randolph Government Center (1987), 5) lower and replace ceiling and install climate controls at the Shaw Building (1976), and 6) replace HVAC system and install climate controls at the Cooperative Extension Building (1976) Conditions: None

372

NERSC File Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Systems NERSC File Systems Overview NERSC file systems can be divided into two categories: local and global. Local file systems are only accessible on a single platform, providing best performance; global file systems are accessible on multiple platforms, simplifying data sharing between platforms. File systems are configured for different purposes. On each machine you have access to at least three different file system Home: Permanent, relatively small storage for data like source code, shell scripts, etc. that you want to keep. This file system is not tuned for high performance from parallel jobs. Referenced by the environment variable $HOME. Scratch: Large, high-performance file system. Place your large data files in this file system for capacity and capability computing. Data is

373

NREL: Energy Systems Integration - Energy Systems Integration...  

NLE Websites -- All DOE Office Websites (Extended Search)

and concentrating solar systems are tested. There is an emphasis on measurement of parabolic trough mirror panels. For detailed laboratory specifications, download the Optical...

374

PERFORMANCEMETRICS INTELLIGENT SYSTEMS ...  

Science Conference Proceedings (OSTI)

Page 1. PERMIS-2007 FOREWORD SPONSORS PerMIS 2008 PERFORMANCEMETRICS FOR INTELLIGENT SYSTEMS (PERMIS) ...

2010-11-12T23:59:59.000Z

375

PHOTOVOLTAIC SOLAR ELECTRIC SYSTEM  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Buying a PHOTOVOLTAIC SOLAR ELECTRIC SYSTEM A Consumer Guide 2003 System: A Consumer Guide i Buying a Photovoltaic Solar Electric System A Consumer Guide California Energy water system that uses the sun's energy to heat water, solar electric or photovoltaic technology uses

Krothapalli, Anjaneyulu

376

Quality System Documentation Management  

Science Conference Proceedings (OSTI)

Quality System Documentation Management. ... Minutes, summaries, or notes from Management Meetings of significance are archived here. ...

2012-08-21T23:59:59.000Z

377

Laboratory Management (Quality) Systems  

Science Conference Proceedings (OSTI)

Laboratory Management (Quality) Systems. NISTIR 7028 Type Evaluation Quality Manual Template. This NISTIR has been ...

2012-05-02T23:59:59.000Z

378

Medical imaging systems  

Science Conference Proceedings (OSTI)

A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

Frangioni, John V

2013-06-25T23:59:59.000Z

379

Petascale system management experiences  

Science Conference Proceedings (OSTI)

Petascale HPC systems are among the largest systems in the world. Intrepid, one such system, is a 40,000 node, 556 teraflop Blue Gene/P system that has been deployed at Argonne National Laboratory. In this paper, we provide some background about the ...

Narayan Desai; Rick Bradshaw; Cory Lueninghoener; Andrew Cherry; Susan Coghlan; William Scullin

2008-11-01T23:59:59.000Z

380

Space System Architecture  

E-Print Network (OSTI)

Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)

McManus, Dr. Hugh

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Building the Senceive System  

Science Conference Proceedings (OSTI)

The conception and development of pervasive systems, i.e, the systems which will be used in pervasive computing environments, involve interdisciplinary team work. Apparently, the team consists of people with a diverse research background and expertise. ... Keywords: activity recognition, building a sensing system, complex system design, network configuration, project work, wireless sensor networks

Waltenegus Dargie; Alexander Schill

2009-05-01T23:59:59.000Z

382

Performance of Integrated Systems of Automated Roller Shade Systems...  

NLE Websites -- All DOE Office Websites (Extended Search)

032011 Keywords automated roller shade systems, daylight responsive dimming systems, daylighting, Integrated systems, photoelectric controls Abstract Daylight responsive...

383

Renovating Residential HVAC Systems HVAC Systems  

E-Print Network (OSTI)

- 1 - LBNL 57406 Renovating Residential HVAC Systems HVAC Systems J.A. McWilliams and I.S. Walker and Air Conditioning), and Stacy Hunt and Ananda Harzell (IBACOS). #12;- 3 - Renovating Residential HVAC Guideline for Residential HVAC Retrofits (http

384

Photovoltaic systems and applications  

DOE Green Energy (OSTI)

Abstracts are given of presentations given at a project review meeting held at Albuquerque, NM. The proceedings cover the past accomplishments and current activities of the Photovoltaic Systems Research, Balance-of-System Technology Development and System Application Experiments Projects at Sandia National Laboratories. The status of intermediate system application experiments and residential system analysis is emphasized. Some discussion of the future of the Photovoltaic Program in general, and the Sandia projects in particular is also presented.

Not Available

1982-01-01T23:59:59.000Z

385

Lighting Control Systems  

Science Conference Proceedings (OSTI)

The demand for lighting control systems in residential, commercial, and industrial facilities is on the rise with the demand for increased energy savings. With lighting accounting for almost 23% of grid load, there is significant opportunity to reduce lighting load while improving the quality of light for customers. Lighting control systems are becoming more intelligent as the need for them to interface with building control systems and demand response systems also increases. Lighting control systems use...

2009-12-17T23:59:59.000Z

386

CX-006424: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4: Categorical Exclusion Determination 4: Categorical Exclusion Determination CX-006424: Categorical Exclusion Determination North Carolina-County-Randolph CX(s) Applied: A9, A11, B2.5, B5.1 Date: 03/11/2010 Location(s): Randolph County, North Carolina Office(s): Energy Efficiency and Renewable Energy Energy Efficiency and Conservation Block Grant Program. Conduct energy audits of six county facilities and create a sustainable energy plan and Energy Efficiency Conservation strategy, 2) lower and replace ceiling and add air return ducting system at the Department of Social Services Building (1997), 3) replace boiler and upgrade climate control system at the County Jail (1997), 4) replace interior lights, climate control, heating, ventilation and air conditioning (HVAC) units, Halon system, and emergency

387

Suppression of fine ash formation in pulverized coal flames. Quarterly technical progress report No. 4, July 1, 1993--September 30, 1993  

Science Conference Proceedings (OSTI)

Laboratory work and studies of full-scale coal-fired boilers have identified two general mechanisms for ash production. The vast majority of the ash is formed from mineral matter that coalesces as the char burns, yielding particles that are normally larger than 0.5 {mu}m. The second major mechanism is the generation of a submicron aerosol through a vaporization/condensation mechanism. Previous work has shown that pulverized bituminous coals that were treated by coal cleaning (via froth flotation) or aerodynamic sizing exhibited altered aerosol emission characteristics. Specifically, the emissions of aerosol for the cleaned and sized coals increased by as much as one order of magnitude. The goals of the present progress are to: (1) perform measurements on carefully characterized coals to identify the means by which the coal treatment increases aerosol yields; (2) investigate means by which coal cleaning can be done in a way that will not increase aerosol yields; (3) identify whether this mechanism can be used to reduce aerosol yields from systems burning straight coal. This paper discusses model description and model formulation, and reports on the progress of furnace design and construction, and coal selection.

Kramlich, J.C.; Hoffman, D.A.; Butcher, E.K.

1993-10-29T23:59:59.000Z

388

Conductance fluctuations in chaotic systems with tunnel barriers  

E-Print Network (OSTI)

Quantum effects are expected to disappear in the short-wavelength, semiclassical limit. As a matter of fact, recent investigations of transport through quantum chaotic systems have demonstrated the exponential suppression of the weak localization corrections to the conductance and of the Fano factor for shot-noise when the Ehrenfest time exceeds the electronic dwell time. On the other hand, conductance fluctuations, an effect of quantum coherence, retain their universal value in the limit of the ratio of Ehrenfest time over dwell time to infinity, when the system is ideally coupled to external leads. Motivated by this intriguing result we investigate conductance fluctuations through quantum chaotic cavities coupled to external leads via (tunnel) barriers of arbitrary transparency. Using the trajectory-based semiclassical theory of transport, we find a linear Ehrenfest time-dependence of the conductance variance showing a nonmonotonous, sinusoidal behavior as a function of the transperancy. Most notably, we find an increase of the conductance fluctuations with the Ehrenfest time, above their universal value, for the transparency less than 0.5. These results, confirmed by numerical simulations, show that, contrarily to the common wisdom, effects of quantum coherence may increase in the semiclassical limit, under special circumstances.

Daniel Waltner; Jack Kuipers; Philippe Jacquod; Klaus Richter

2011-08-25T23:59:59.000Z

389

The Napier Type System  

E-Print Network (OSTI)

Persistent programming is concerned with the construction of large and long lived systems of data. In designing and building persistent object systems, we are attempting to regularise the activities that are performed on data by programming languages, operating systems, database management systems and file systems. We have identified the following areas of research which we are investigating in the context of persistent systems. They are: controlling complexity, protection of data, orthogonal persistence, controlled system evolution and concurrent computation. In this paper, we describe the data modelling facilities of the Napier type system. We also demonstrate the flexible and incremental nature of the type checking mechanism that is required for persistent programming. The type system is central to the nature of the Napier language and we will demonstrate how it has been designed to solve problems in the five areas identified above.

R. Morrison; A.L. Brown; R. Carrick; R.C.H. Connor; A. Dearle; M.P. Atkinson

1989-01-01T23:59:59.000Z

390

AUTONOMOUS ROBOTIC INSPECTION EXPERIMENTAL SYSTEM  

Science Conference Proceedings (OSTI)

This document contains appendices on these topics: COMPUTERS AND CONTROLS; COMPUTER VISION SYSTEM; ELECTRICAL SYSTEMS; MECHANICAL SYSTEMS; ROBOTIC VEHICLE SYSTEMS; FIELD TRIALS.

David N. Rocheleau, Senior Investigator; Edward A. Hamilton, Associate Director, SCUREF; Jerry L. Hudgins, Senior Investigator; Paul McCarty, Graduate Research Assistant; Robert J. Schalkoff, Senior Investigator; Robert O. Pettus, Project Manager & Principal Investigator

1998-08-01T23:59:59.000Z

391

Modeling Power Systems as Complex Adaptive Systems  

Science Conference Proceedings (OSTI)

Physical analogs have shown considerable promise for understanding the behavior of complex adaptive systems, including macroeconomics, biological systems, social networks, and electric power markets. Many of today's most challenging technical and policy questions can be reduced to a distributed economic control problem. Indeed, economically based control of large-scale systems is founded on the conjecture that the price-based regulation (e.g., auctions, markets) results in an optimal allocation of resources and emergent optimal system control. This report explores the state-of-the-art physical analogs for understanding the behavior of some econophysical systems and deriving stable and robust control strategies for using them. We review and discuss applications of some analytic methods based on a thermodynamic metaphor, according to which the interplay between system entropy and conservation laws gives rise to intuitive and governing global properties of complex systems that cannot be otherwise understood. We apply these methods to the question of how power markets can be expected to behave under a variety of conditions.

Chassin, David P.; Malard, Joel M.; Posse, Christian; Gangopadhyaya, Asim; Lu, Ning; Katipamula, Srinivas; Mallow, J V.

2004-12-30T23:59:59.000Z

392

Environmental Management System  

NLE Websites -- All DOE Office Websites (Extended Search)

Management System Management System Environmental Management System An Environmental Management System is a systematic method for assessing mission activities, determining the environmental impacts of those activities, prioritizing improvements, and measuring results. May 30, 2012 The continuous improvement cycle Our Environmental Management System encourages continuous improvement of our environmental performance. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Managing our effects on the environment We are committed to protecting the environment while conducting our national security and energy-related missions. Laboratory Environmental Governing Policy What is the Environmental Management System? It covers every program in the Laboratory

393

Verification of Adaptive Systems  

SciTech Connect

Adaptive systems are critical for future space and other unmanned and intelligent systems. Verification of these systems is also critical for their use in systems with potential harm to human life or with large financial investments. Due to their nondeterministic nature and extremely large state space, current methods for verification of software systems are not adequate to provide a high level of assurance for them. The combination of stabilization science, high performance computing simulations, compositional verification and traditional verification techniques, plus operational monitors, provides a complete approach to verification and deployment of adaptive systems that has not been used before. This paper gives an overview of this approach.

Pullum, Laura L [ORNL; Cui, Xiaohui [New York Institute of Technology (NYIT); Vassev, Emil [Lero – The Irish Software Engineering Research Centre; Hinchey, Mike [Lero – The Irish Software Engineering Research Centre; Rouff, Christopher [Lockheed Martin Corporation; Buskens, Richard [Lockheed Martin Corporation

2012-01-01T23:59:59.000Z

394

SUBSURFACE EMPLACEMENT TRANSPORTATION SYSTEM  

SciTech Connect

The objective of this analysis is to identify issues and criteria that apply to the design of the Subsurface Emplacement Transportation System (SET). The SET consists of the track used by the waste package handling equipment, the conductors and related equipment used to supply electrical power to that equipment, and the instrumentation and controls used to monitor and operate those track and power supply systems. Major considerations of this analysis include: (1) Operational life of the SET; (2) Geometric constraints on the track layout; (3) Operating loads on the track; (4) Environmentally induced loads on the track; (5) Power supply (electrification) requirements; and (6) Instrumentation and control requirements. This analysis will provide the basis for development of the system description document (SDD) for the SET. This analysis also defines the interfaces that need to be considered in the design of the SET. These interfaces include, but are not limited to, the following: (1) Waste handling building; (2) Monitored Geologic Repository (MGR) surface site layout; (3) Waste Emplacement System (WES); (4) Waste Retrieval System (WRS); (5) Ground Control System (GCS); (6) Ex-Container System (XCS); (7) Subsurface Electrical Distribution System (SED); (8) MGR Operations Monitoring and Control System (OMC); (9) Subsurface Facility System (SFS); (10) Subsurface Fire Protection System (SFR); (11) Performance Confirmation Emplacement Drift Monitoring System (PCM); and (12) Backfill Emplacement System (BES).

T. Wilson; R. Novotny

1999-11-22T23:59:59.000Z

395

Fundamental Performance Determining Factors of the Ultrahigh-Precision Space-Borne Optical Metrology System for the LISA Pathfinder mission  

E-Print Network (OSTI)

The LISA Pathfinder mission to space employs an optical metrology system (OMS) at its core to measure the distance and attitude between two freely floating test-masses to picometer and nanorad accuracy, respectively, within the measurement band of [1 mHz, 30 mHz]. The OMS is based upon an ultra-stable optical bench with 4 heterodyne interferometers from which interference signals are read-out and processed by a digital phase-meter. Laser frequency noise, power fluctuations and optical path-length variations are suppressed to uncritical levels by dedicated control loops so that the measurement performance approaches the sensor limit imposed by the phase-meter. The system design is such that low frequency common mode noise which affects the read-out phase of all four interferometers is generally well suppressed by subtraction of a reference phase from the other interferometer signals. However, high frequency noise directly affects measurement performance and its common mode rejection depends strongly on the relative signal phases. We discuss how the data from recent test campaigns point towards high frequency phase noise as a likely performance limiting factor which explains some important performance features.

Gerald Hechenblaikner; Reinhold Flatscher

2013-07-30T23:59:59.000Z

396

Business System Planning Project System Requirements Specification  

SciTech Connect

The purpose of the Business Systems Planning Project System Requirements Specification (SRS) is to provide the outline and contents of the requirements for the CH2M HILL Hanford Group, Inc. (CHG) integrated business and technical information systems. The SRS will translate proposed objectives into the statement of the functions that are to be performed and data and information flows that they require. The requirements gathering methodology will use (1) facilitated group requirement sessions; (2) individual interviews; (3) surveys; and (4) document reviews. The requirements will be verified and validated through coordination of the technical requirement team and CHG Managers. The SRS document used the content and format specified in Lockheed Martin Services, Inc. Organization Standard Software Practices in conjunction with the Institute of Electrical and Electronics Engineers Standard 8340-1984 for Systems Requirements Documents.

NELSON, R.E.

2000-09-08T23:59:59.000Z

397

System Compatibility of Modern Lighting Control Systems  

Science Conference Proceedings (OSTI)

The state of the energy industry combined with growing economic pressures will drive accelerated use of energy-efficient dimmable lighting devices and control systems. While penetration and application will be different across customer sectors, the goal is to dynamically reduce lighting load without compromising productivity and the quality of light and life in a timely manner. Continual improvement of dimmable devices and controls is paramount to achieving that goal. EPRI research concepts in system com...

2011-10-11T23:59:59.000Z

398

EPICS system: system structure and user interface  

SciTech Connect

This paper present the user's view of and the general organization of the EPICS control system at Fermilab. Various subsystems of the EPICS control system are discussed. These include the user command language, software protection, the device database, remote computer interfaces, and several application utilities. This paper is related to two other papers on EPICS: an overview paper and a detailed implementation paper.

West, R.E.; Bartlett, J.F.; Bobbitt, J.S.; Lahey, T.E.; Kramper, B.J.; MacKinnon, B.A.

1984-02-01T23:59:59.000Z

399

Standard-C hydrogen monitoring system, system design description  

DOE Green Energy (OSTI)

Standard-C cabinet arrangement system design description for the Standard Hydrogen Monitoring System.

Schneider, T.C., Westinghouse Hanford

1996-08-29T23:59:59.000Z

400

Electricity Distribution System Workshop  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Discussion Summary Discussion Summary Electricity Transmission System Workshop 1 Grid Tech Team Discussion Summary Electricity Transmission System Workshop 2 Table of Contents INTRODUCTION ............................................................................................................................................. 3 EXECUTIVE SUMMARY .................................................................................................................................. 4 Process ...................................................................................................................................................... 4 Synthesized Challenges ............................................................................................................................. 5

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Photovoltaic System Performance  

Energy.gov (U.S. Department of Energy (DOE))

Photovoltaic (PV) systems are usually composed of numerous solar arrays, which in turn, are composed of numerous PV cells. The performance of the system is therefore dependent on the performance of...

402

Stepping Motor Control System  

E-Print Network (OSTI)

This paper describes a hardware system designed to facilitate position and velocity control of a group of eight stepping motors using a PDP-11. The system includes motor driver cards and other interface cards in addition ...

Larson, Noble G.

403

Double Degenerate Binary Systems  

Science Conference Proceedings (OSTI)

In this study, angular momentum loss via gravitational radiation in double degenerate binary (DDB)systems (NS + NS, NS + WD, WD + WD, and AM CVn) is studied. Energy loss by gravitational waves has been estimated for each type of systems.

Yakut, K. [University of Ege, Department of Astronomy and Space Sciences, 35100-Izmir (Turkey)

2011-09-21T23:59:59.000Z

404

Crowd-powered systems  

E-Print Network (OSTI)

Crowd-powered systems combine computation with human intelligence, drawn from large groups of people connecting and coordinating online. These hybrid systems enable applications and experiences that neither crowds nor ...

Bernstein, Michael Scott

2012-01-01T23:59:59.000Z

405

Urban organizational systems  

E-Print Network (OSTI)

General systems theory provides a conceptual framework for the integration of knowledge from a wide variety of specialized fields. Systems theory serves to synthesize, reconcile, and integrate knowledge making it possible ...

Morog, Joseph V

1981-01-01T23:59:59.000Z

406

Regimes in Simple Systems  

Science Conference Proceedings (OSTI)

Dynamical systems possessing regimes are identified with those where the state space possesses two or more regions such that transitions of the state from either region to the other are rare. Systems with regimes are compared to those where ...

Edward N. Lorenz

2006-08-01T23:59:59.000Z

407

IBM POWER7 systems  

Science Conference Proceedings (OSTI)

This paper describes the system architectures and designs of the IBM POWER7® servers. From the smallest single-processor socket blade to the largest 32-processor-socket 256-core enterprise rack server, each system is designed to fully ...

R. X. Arroyo; R. J. Harrington; S. P. Hartman; T. Nguyen

2011-05-01T23:59:59.000Z

408

Absorption heat pump system  

DOE Patents (OSTI)

The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

Grossman, Gershon (Oak Ridge, TN)

1984-01-01T23:59:59.000Z

409

Absorption heat pump system  

DOE Patents (OSTI)

The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

Grossman, G.

1982-06-16T23:59:59.000Z

410

Routing Policy System Replication  

Science Conference Proceedings (OSTI)

The RIPE database specifications and RPSL define languages used as the basis for representing information in a routing policy system. A repository for routing policy system information is known as a routing registry. A routing registry provides a means ...

C. Villamizar; C. Alaettinoglu; R. Govindan; D. Meyer

2000-02-01T23:59:59.000Z

411

Residential Geothermal Systems Credit  

Energy.gov (U.S. Department of Energy (DOE))

A resident individual taxpayer of Montana who installs a geothermal heating or cooling system in their principal dwelling can claim a tax credit based on the installation costs of the system, not...

412

Energy Basics: Photovoltaic Systems  

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

an entire PV system. This system is usually everything needed to meet a particular energy demand, such as powering a water pump, the appliances and lights in a home, or-if the...

413

Hanford System Overview  

CHG0612-16.0 CH2M-32399-VA Hanford System Overview Hanford System Overview January 23-24, 2007 Paul Certa Tom Crawford Aluminum and Chromium Leaching for

414

Small Modular Biomass Systems  

DOE Green Energy (OSTI)

Fact sheet that provides an introduction to small modular biomass systems. These systems can help supply electricity to rural areas, businesses, and people without power. They use locally available biomass fuels such as wood, crop waste, and animal manures.

Not Available

2002-12-01T23:59:59.000Z

415

Transport in granular systems  

E-Print Network (OSTI)

There are many situations in which a continuum view of granular systems does not fully capture the relevant mechanics. In order for engineers to be able to design systems for transporting granular materials, there needs ...

Wendell, Dawn M. (Dawn Marie), 1983-

2011-01-01T23:59:59.000Z

416

New electrochromic mirror systems  

New electrochromic mirror systems ... recorded using a fiber optic spectrometer (Ocean Optics). ... transmittance modulation of infrared light could lead

417

Microfluidic Partitioning System  

home \\ technologies \\ microfluidic partitioning system. Technologies: Ready-to-Sign Licenses: ... for the Department of Energy's National Nuclear Security Administration

418

Information Systems Group Homepage  

Science Conference Proceedings (OSTI)

... computational methods, data/knowledge mining tools, and semantic services using systems-based approaches, to advance measurement science ...

2012-06-26T23:59:59.000Z

419

Energy Basics: Photovoltaic Systems  

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

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Solar Photovoltaics Cells Systems Concentrating Solar...

420

Lithium battery management system  

SciTech Connect

Provided is a system for managing a lithium battery system having a plurality of cells. The battery system comprises a variable-resistance element electrically connected to a cell and located proximate a portion of the cell; and a device for determining, utilizing the variable-resistance element, whether the temperature of the cell has exceeded a predetermined threshold. A method of managing the temperature of a lithium battery system is also included.

Dougherty, Thomas J. (Waukesha, WI)

2012-05-08T23:59:59.000Z

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Distribution System Losses Evaluation  

Science Conference Proceedings (OSTI)

Currently, there is not an industry standard on how utilities calculate and account for electrical losses and reductions in electric system losses. Computer models used to analyze power flows typically only include the primary components of the distribution system infrastructure. More detailed electric system models can benefit utilities by providing more accurate loss calculations as well as benefits for system planning and engineering. The utility industry could benefit from having a consistent and uni...

2008-12-16T23:59:59.000Z

422

Interactive Intelligent Systems  

Science Conference Proceedings (OSTI)

... in applying interactive system utility measurements against some hard problems in both the intelligence community (IC) and the military (DARPA). ...

2011-09-08T23:59:59.000Z

423

CSRC - Systems Administration  

Science Conference Proceedings (OSTI)

... The intended audience is composed of Windows 2000 Systems Administrators and technical Windows 2000 Professional users working in ...

424

Fuel washout detection system  

DOE Patents (OSTI)

A system for detecting grossly failed reactor fuel by detection of particulate matter as accumulated on a filter.

Colburn, Richard P. (Pasco, WA)

1985-01-01T23:59:59.000Z

425

Monitoring System Performance (Presentation)  

DOE Green Energy (OSTI)

Requirements for a standard test to rate the durability of photovoltaic (PV) modules at system voltage are discussed.

Emery, K.; Smith, R.

2011-02-01T23:59:59.000Z

426

UML for systems engineering  

Science Conference Proceedings (OSTI)

The paper provides an introduction to the employment of Unified Modeling Language (UML) in systems engineering. The standard being developed for this purpose is the Systems Modeling Language (SysML) specification. This paper, while not dealing with SysML ... Keywords: DoDAF, Software engineering, SysML, Systems engineering, UML

Brian Willard

2007-01-01T23:59:59.000Z

427

Recommender systems survey  

Science Conference Proceedings (OSTI)

Recommender systems have developed in parallel with the web. They were initially based on demographic, content-based and collaborative filtering. Currently, these systems are incorporating social information. In the future, they will use implicit, local ... Keywords: Cold-start, Collaborative filtering, Evaluation metrics, Hybrid, Internet of things, Prediction, Recommendation, Recommender systems, Similarity measures, Social

J. Bobadilla, F. Ortega, A. Hernando, A. GutiéRrez

2013-07-01T23:59:59.000Z

428

Modular Integrated Energy Systems  

E-Print Network (OSTI)

system (or CHP -- Cooling, Heat and Power) system at Ft. Bragg. Much of this work is funded by the U consists of a gas turbine-generator, a heat recovery steam generator, and a waste heat fired absorption-driven absorption chiller, · Install and monitor the performance of a prototype IES modular system employing

Oak Ridge National Laboratory

429

DOE Systems Engineering Methodology  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Computer System Retirement Guidelines Computer System Retirement Guidelines Version 3 September 2002 U.S. Department of Energy Office of the Chief Information Officer Computer System Retirement Guidelines Date: September 2002 Page 1 Rev Date: Table of Contents Section Page Purpose ............................................................................................................................................ 2 Initiation and Distribution ............................................................................................................... 2 Resource .......................................................................................................................................... 2 General Information ........................................................................................................................

430

NIST Intranet Quality System Links  

Science Conference Proceedings (OSTI)

Safety. Environmental Management System. NIST Quality System Resources. Assessor Resources. MSAG Website. Dates and Deadlines. ...

2012-08-21T23:59:59.000Z

431

CMS System Security Plan Procedure  

Science Conference Proceedings (OSTI)

... TASK 5: SYSTEM DECOMMISSION. ... BPSSM Business Partners Systems Security Manual. ... of Information Technology, Policy, Procedures, & Audits. ...

2009-06-30T23:59:59.000Z

432

Match Pumps to System Requirements  

SciTech Connect

BestPractices Program tip sheet discussing pumping system efficiency matching pumps to system requirements

2005-10-01T23:59:59.000Z

433

Distribution System Research Priorities  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Mark McGranaghan Mark McGranaghan EPRI ELECTRICITY DISTRIBUTION SYSTEM WORKSHOP Crystal City, VA September 24, 2012 Distribution System Research Priorities 2 © 2012 Electric Power Research Institute, Inc. All rights reserved. The Power System Roadmaps start with a Vision Future Power System will require new technologies, infrastructure, and control systems 3 © 2012 Electric Power Research Institute, Inc. All rights reserved. R&D Roadmaps - Coordination is Critical Roadmaps are living documents 4 © 2012 Electric Power Research Institute, Inc. All rights reserved. Developing the next generation grid * Industry needs new technologies, communication protocols, and information management methods - More variable generation sources and controllable loads - Aging infrastructure

434

Intelligent Car System  

E-Print Network (OSTI)

In modern life the road safety has becomes the core issue. One single move of a driver can cause horrifying accident. The main goal of intelligent car system is to make communication with other cars on the road. The system is able to control to speed, direction and the distance between the cars the intelligent car system is able to recognize traffic light and is able to take decision according to it. This paper presents a framework of the intelligent car system. I validate several aspect of our system using simulation.

Siddique, Qasim

2012-01-01T23:59:59.000Z

435

Massively parallel computing system  

DOE Patents (OSTI)

A parallel computing system and method having improved performance where a program is concurrently run on a plurality of nodes for reducing total processing time, each node having a processor, a memory, and a predetermined number of communication channels connected to the node and independently connected directly to other nodes. The present invention improves performance of the parallel computing system by providing a system which can provide efficient communication between the processors and between the system and input and output devices. A method is also disclosed which can locate defective nodes with the computing system.

Benner, R.E.; Gustafson, J.L.; Montry, G.R.

1989-03-01T23:59:59.000Z

436

Business System Planning Project, Preliminary System Design  

SciTech Connect

CH2M HILL Hanford Group, Inc. (CHG) is currently performing many core business functions including, but not limited to, work control, planning, scheduling, cost estimating, procurement, training, and human resources. Other core business functions are managed by or dependent on Project Hanford Management Contractors including, but not limited to, payroll, benefits and pension administration, inventory control, accounts payable, and records management. In addition, CHG has business relationships with its parent company CH2M HILL, U.S. Department of Energy, Office of River Protection and other River Protection Project contractors, government agencies, and vendors. The Business Systems Planning (BSP) Project, under the sponsorship of the CH2M HILL Hanford Group, Inc. Chief Information Officer (CIO), have recommended information system solutions that will support CHG business areas. The Preliminary System Design was developed using the recommendations from the Alternatives Analysis, RPP-6499, Rev 0 and will become the design base for any follow-on implementation projects. The Preliminary System Design will present a high-level system design, providing a high-level overview of the Commercial-Off-The-Shelf (COTS) modules and identify internal and external relationships. This document will not define data structures, user interface components (screens, reports, menus, etc.), business rules or processes. These in-depth activities will be accomplished at implementation planning time.

EVOSEVICH, S.

2000-10-30T23:59:59.000Z

437

Structural Deformation during a Typhoon as Monitored by an Integrated Multi-Sensor System  

E-Print Network (OSTI)

Monitoring structural response induced by severe loadings such as typhoon is an efficient way to mitigate or prevent damage. Because the measured signal can be used to activate an alarm system to evacuate people from an endangered building, or to drive a control system to suppress typhoon excited vibrations so as to protect the integrity of the structure. A 108m tall tower in Tokyo has been monitored by an integrated system combining RTK-GPS and accelerometers. Data collected by the multi-sensor system have been analysed and compared to the original finite element modelling (FEM) result for structural deformation monitoring studies. Especially, the short time Fast Fourier Transform (FFT) analysis results have shown that the time-frequency relation does give us almost instantaneous frequency response during a typhoon event. In this paper the feasibility of integrating advanced sensing technologies such as RTK-GPS with traditional accelerometer sensors, for structural vibration response and deformation monitoring under severe loading conditions, is discussed. The redundancy within the integrated system has shown robust quality assurance.

Xiaojing Li

2004-01-01T23:59:59.000Z

438

Turbine power plant system  

SciTech Connect

A turbine power plant system consisting of three sub-systems; a gas turbine sub-system, an exhaust turbine sub-system, and a steam turbine sub-system. The three turbine sub-systems use one external fuel source which is used to drive the turbine of the gas turbine sub-system. Hot exhaust fluid from the gas turbine sub-system is used to drive the turbines of the exhaust turbine sub-system and heat energy from the combustion chamber of the gas turbine sub-system is used to drive the turbine of the steam turbine sub-system. Each sub-system has a generator. In the gas turbine sub-system, air flows through several compressors and a combustion chamber and drives the gas turbine. In the exhaust turbine sub-system, hot exhaust fluid from the gas turbine sub-system flows into the second passageway arrangement of first and fourth heat exchangers and thus transfering the heat energy to the first passageway arrangement of the first and fourth heat exchangers which are connected to the inlets of first and second turbines, thus driving them. Each turbine has its own closed loop fluid cycle which consists of the turbine and three heat exchangers and which uses a fluid which boils at low temperatures. A cooler is connected to a corresponding compressor which forms another closed loop system and is used to cool the exhaust fluid from each of the two above mentioned turbines. In the steam turbine sub-system, hot fluid is used to drive the steam turbine and then it flows through a fluid duct, to a first compressor, the first fluid passageway arrangement of first and second heat exchangers, the second passageway of the first heat exchanger, the combustion chamber of the gas turbine where it receives heat energy, and then finally to the inlet of the steam turbine, all in one closed loop fluid cycle. A cooler is connected to the second passageway of the second heat exchanger in a closed loop fluid cycle, which is used to cool the turbine exhaust.

Papastavros, D.

1985-03-05T23:59:59.000Z

439

NEWTON's Metric System Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

Please select any link below. Search this page, using your web browser's search function. Please select any link below. Search this page, using your web browser's search function. Metric System References Do you have a great metric reference link? Please click our Ideas page. Featured Reference Links: Metric (SI) References Metric (SI) References Having trouble with the metric system? Visit the National Institute of Standards and Technology's site about the rules and style conventions of the International System of Units (SI). The Metric System The Metric System Need another reference? Try this site provided by Wikipedia that discusses the metric system and its history in depth. Metric Converter Metric Converter Need to convert to Metric? OnlineConversion.com allows you to convert just about anything to just about anything else. This will let you easily from metric to US Standard notation, and vice versa.

440

NSLS Computer Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Systems Computer Systems Micro Systems WorkStation Applications Network Configuration Documents The National Synchrotron Light Source facility at the Brookhaven National Laboratory in New York, consists of two storage rings, one for VUV operating at 800 Mev and one for XRAY at 2.8 Gev and a common injection system comprised of a linear accelerator and a Booster ring. Hardware Architecture The hardware architecture of the present control system follows the current trend seen in many accelerator facilities. It is a two-level distributed system consisting of HP/900 series workstations connected by the standard ethernet to VME-based microprocessor subsystems. All the workstations have local disk and sufficient memory for fast response. Workstations are used as file server, back-up file server and for program development and other

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Quality monitored distributed voting system  

DOE Patents (OSTI)

A quality monitoring system can detect certain system faults and fraud attempts in a distributed voting system. The system uses decoy voters to cast predetermined check ballots. Absent check ballots can indicate system faults. Altered check ballots can indicate attempts at counterfeiting votes. The system can also cast check ballots at predetermined times to provide another check on the distributed voting system. 6 figs.

Skogmo, D.

1997-03-18T23:59:59.000Z

442

Building America System Research  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Building America System Building America System Research Eric Werling, DOE Ren Anderson, NREL eric.werling@ee.doe.gov, 202-586-0410 ren.anderson@nrel.gov, 303-384-7443 April 2, 2013 Building America System Innovations: Accelerating Innovation in Home Energy Savings 2 | Program Name or Ancillary Text eere.energy.gov Project Relevance 3 | Building Technologies Office eere.energy.gov Building America Fills Market Need for a High-Performance Homes HUB of Innovation

443

Multizone infiltration monitoring system  

DOE Green Energy (OSTI)

A multizone infiltration monitoring system (MIMS) using a single tracer gas has been developed. MIMS measures zonal infiltration and exfiltration as well as interzonal air movement rates. The system has been used at the 4-zone test house at the SERI interim field site, and this paper presents preliminary results. The present system can determine zonal infiltration rates, and the results show significant differences in infiltration rates for the various zones.

Wortman, D.N.; Burch, J.; Judkoff, R.

1982-06-01T23:59:59.000Z

444

System and Network Management  

Science Conference Proceedings (OSTI)

This document covers Systems and Network Management Requirements and is the first deliverable in a joint EPRI and Utility User Project to develop Network Management capability for Electric Utility Automation Systems (UAS) using international communication standards such as IEC 61850. The management of substation automation systems is critical since tools are now based, for the most part, on proprietary hardware and software. In modern state-of-the art substations, traditional network management has ...

2012-12-20T23:59:59.000Z

445

Scalable autonic processing systems  

Science Conference Proceedings (OSTI)

The number of automotive functions that are controlled by computers is rapidly increasing. In the past, these functions were confined to stand-alone control units, such as the engine or ABS brake controller. In modern cars, the data exchange between ... Keywords: autonic systems, distributed processing and real-time systems, event-triggered, fault tolerance, parallel processing, scalable automotive electronics system, time-triggered, vehicle electronics

Adnan Shaout; Najamuz Zaman; Taisir Eldos

2003-07-01T23:59:59.000Z

446

Plasmatron-catalyst system  

DOE Patents (OSTI)

A plasmatron-catalyst system. The system generates hydrogen-rich gas and comprises a plasmatron and at least one catalyst for receiving an output from the plasmatron to produce hydrogen-rich gas. In a preferred embodiment, the plasmatron receives as an input air, fuel and water/steam for use in the reforming process. The system increases the hydrogen yield and decreases the amount of carbon monoxide.

Bromberg, Leslie (Sharon, MA); Cohn, Daniel R. (Chestnut Hill, MA); Rabinovich, Alexander (Swampscott, MA); Alexeev, Nikolai (Moscow, RU)

2007-10-09T23:59:59.000Z

447

Transient data recorder systems  

DOE Patents (OSTI)

Transient data recorder systems including a high speed charge coupled device and a device exerciser, including a high speed sampler and driver circuitry.

Linnenbrink, Thomas E. (Winnetka, IL); Gradl, David A. (Des Plaines, IL)

1982-01-01T23:59:59.000Z

448

Norcal Waste Systems, Inc.  

SciTech Connect

Fact sheet describes the LNG long-haul heavy-duty trucks at Norcal Waste Systems Inc.'s Sanitary Fill Company.

Not Available

2002-12-01T23:59:59.000Z

449

System Benefits Charge  

Energy.gov (U.S. Department of Energy (DOE))

New York's system benefits charge (SBC), established in 1996 by the New York Public Service Commission (PSC), supports energy efficiency, education and outreach, research and development, and low...

450

Intelligent Systems Division Homepage  

Science Conference Proceedings (OSTI)

... the versatility, autonomy, and rapid re-tasking of intelligent robots and automation technologies for smart manufacturing and cyber-physical systems ...

2013-08-06T23:59:59.000Z

451

Energy Information Systems website  

NLE Websites -- All DOE Office Websites (Extended Search)

and visualize the energy use of their buildings. Please visit the recently updated Energy Information System website for EETD research papers, case studies, and a download...

452

Nuclear Energy Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Role of Synchrotron Radiation in Solving Scientific Challenges in Advanced Nuclear Energy Systems 27 to 28 January 2010 at Argonne's Advanced Photon Source Scope Third-generation...

453

Benchmark Monitoring: Retired Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Completed Batch Jobs Completed Parallel Jobs Usage Reports Hopper Benchmark Monitoring Edison Benchmark Monitoring Carver Benchmark Monitoring Benchmark Monitoring: Retired Systems...

454

Edison Systems Technology Documentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Documentation Systems Technology Documentation Downloads CrayXC30Networking.pdf | Adobe Acrobat PDF file Cray XC30 Networking SonexionBrochure.pdf | Adobe Acrobat PDF...

455

Energy Basics: Heating Systems  

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

of energy sources, including electricity, boilers, solar energy, and wood and pellet-fuel heating. Small Space Heaters Used when the main heating system is inadequate or when...

456

Laundry heat recovery system  

SciTech Connect

A laundry heat recovery system includes a heat exchanger associated with each dryer in the system, the heat exchanger being positioned within the exhaust system of the dryer. A controller responsive to the water temperature of the heat exchangers and the water storage for the washer selectively circulates the water through a closed loop system whereby the water within the exchangers is preheated by the associated dryers. By venting the exhaust air through the heat exchanger, the air is dehumidified to permit recirculation of the heated air into the dryer.

Alio, P.

1985-04-09T23:59:59.000Z

457

Solar powered desalination system  

E-Print Network (OSTI)

Fundamentals of Salt Water Desalination. New York: Elsevier,7. Lightbucket. Large scale desalination: is there enoughSystem for Seawater Desalination Plants. The Netherlands:

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

458

Precision volume measurement system.  

Science Conference Proceedings (OSTI)

A new precision volume measurement system based on a Kansas City Plant (KCP) design was built to support the volume measurement needs of the Gas Transfer Systems (GTS) department at Sandia National Labs (SNL) in California. An engineering study was undertaken to verify or refute KCP's claims of 0.5% accuracy. The study assesses the accuracy and precision of the system. The system uses the ideal gas law and precise pressure measurements (of low-pressure helium) in a temperature and computer controlled environment to ratio a known volume to an unknown volume.

Fischer, Erin E.; Shugard, Andrew D.

2004-11-01T23:59:59.000Z

459

Next generation CAT system  

E-Print Network (OSTI)

Two novel techniques for future CAT system are presented. Transmission descattering is a singleshot method to differentiate unscattered and scattered components of light transmission through a scattering material. ...

Kim, Jaewon, S.M. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

460

Lighting Systems Test Facilities  

NLE Websites -- All DOE Office Websites (Extended Search)

Measurement equipment with light beam Lighting Systems Test Facilities NOTICE Due to the current lapse of federal funding, Berkeley Lab websites are accessible, but may not be...

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Radioisotope Power Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

into finished metal shapes by extrusion, rolling, forming, machining, assembly, and welding. Nondestructive testing and quality systems are employed throughout the process to...

462

Technology reviews: Lighting systems  

SciTech Connect

We present a representative review of existing, emerging, and future technology options in each of five hardware and systems areas in envelope and lighting technologies: lighting systems, glazing systems, shading systems, daylighting optical systems, and dynamic curtain wall systems. The term technology is used here to describe any design choice for energy efficiency, ranging from individual components to more complex systems to general design strategies. The purpose of this task is to characterize lighting system in the state of the art in envelope and lighting technologies in order to identify those with promise for advanced integrated systems, with an emphasis on California commercial buildings. For each technology category, the following activities have been attempted to the extent possible: Identify key performance characteristics and criteria for each technology. Determine the performance range of available technologies. Identify the most promising technologies and promising trends in technology advances. Examine market forces and market trends. Develop a continuously growing in-house database to be used throughout the project. A variety of information sources have been used in these technology characterizations, including miscellaneous periodicals, manufacturer catalogs and cut sheets, other research documents, and data from previous computer simulations. We include these different sources in order to best show the type and variety of data available, however publication here does not imply our guarantee of these data. Within each category, several broad classes are identified, and within each class we examine the generic individual technologies that fall into that class.

Schuman, J.; Rubinstein, F.; Papamichael, K.; Beltran, L.; Lee, E.S.; Selkowitz, S.

1992-09-01T23:59:59.000Z

463

Genomics and Systems Biology  

NLE Websites -- All DOE Office Websites (Extended Search)

such as energy, agriculture, and environmental cleanup. Get Expertise Babetta Marrone Biofuels Program Manager Email Cheryl Kuske DOE BER Biological System Science Division...

464

Infrared Thermography Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

funds for Fiscal Year 2014. Title Infrared Thermography Systems Publication Type Book Chapter LBNL Report Number LBNL-46590 Year of Publication 2000 Authors Griffith, Brent...

465

Toyota production system.  

E-Print Network (OSTI)

??Background: There are various manufacturing methods and systems in automobile industries throughout the world. Of these, many practice lean manufacturing methods. The most effective and… (more)

Vyas, Kewalkumar Chandrakant

2011-01-01T23:59:59.000Z

466

Deepwater drilling riser system  

Science Conference Proceedings (OSTI)

The principal focus of this paper is to discuss and summarize, from the manufacturer's perspective, the primary milestones in the development of the marine riser system used to drill in record water depths off the U.S. east coast. This riser system is unique in that it used advanced designs, material technology, and quality control to enable safe operation in water depths beyond the capability of conventional drilling riser systems. Experience and research have led to design improvements that are now being incorporated in new riser systems that have the potential of expanding the frontiers to increasingly deeper water.

Chastain, T.; Stone, D.

1986-08-01T23:59:59.000Z

467

Energy Management Systems  

E-Print Network (OSTI)

This presentation will address results from a pilot project with 10 chemical plants on energy management systems and the development of an energy efficiency plant certification program.

Ferland, K.

2007-01-01T23:59:59.000Z

468

Genomics and Systems Biology  

NLE Websites -- All DOE Office Websites (Extended Search)

Genomics and Systems Biology LANL leads the world in computational finishing of microbial genomes Read caption + In 2013, Los Alamos scientist Richard Sayre and his team...

469

Bearing Material Systems  

Science Conference Proceedings (OSTI)

Table 2   Single-metal bearing material systems...Bronze C C C D B 14 2 Electric motor bushings, home appliance bearings,

470

Remote Systems Design & Deployment  

Science Conference Proceedings (OSTI)

The Pacific Northwest National Laboratory (PNNL) was tasked by Washington River Protection Solutions, LLC (WRPS) to provide information and lessons learned relating to the design, development and deployment of remote systems, particularly remote arm/manipulator systems. This report reflects PNNL’s experience with remote systems and lays out the most important activities that need to be completed to successfully design, build, deploy and operate remote systems in radioactive and chemically contaminated environments. It also contains lessons learned from PNNL’s work experiences, and the work of others in the national laboratory complex.

Bailey, Sharon A.; Baker, Carl P.; Valdez, Patrick LJ

2009-08-28T23:59:59.000Z

471

The Epicure Control System  

SciTech Connect

The Epicure Control System supports the Fermilab fixed target physics program. The system is distributed across a network of many different types of components. The use of multiple layers on interfaces for communication between logical tasks fits the client-server model. Physical devices are read and controlled using symbolic references entered into a database with an editor utility. The database system consists of a central portion containing all device information and optimized portions distributed among many nodes. Updates to the database are available throughout the system within minutes after being requested.

Dambik, E.; Kline, D.; West, R.

1993-09-01T23:59:59.000Z

472

Intelligent Transport Systems  

E-Print Network (OSTI)

in Sustainable Urban Transport: City Interview Synthesis (of Leeds, Institute for Transport Studies, forthcoming.I NTELLIGENT TRANSPORT SYSTEMS LINKING TECHNOLOGY AND

Deakin, Elizabeth; Frick, Karen Trapenberg; Skabardonis, Alexander

2009-01-01T23:59:59.000Z

473

FCT Systems Analysis: Contacts  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Analysis: Contacts on AddThis.com... Home Analysis Methodologies DOE H2A Analysis Scenario Analysis Quick Links Hydrogen Production Hydrogen Delivery Hydrogen Storage Fuel...

474

Manufacturing Systems Integration News  

Science Conference Proceedings (OSTI)

... NIST Cooperative Agreement with University of Maryland Supports Research on 21st Century Smart Systems Release Date: 10/13/2011 ...

2011-12-01T23:59:59.000Z

475

NREL: Systems Engineering - Workshops  

NLE Websites -- All DOE Office Websites (Extended Search)

Workshops The Wind Energy Systems Engineering Workshop is a biennial workshop that invites speakers from academia, industry, and international research laboratories to discuss...

476

Retarded Green's Function Of A Vainshtein System And Galileon Waves  

E-Print Network (OSTI)

Motivated by the desire to test modified gravity theories exhibiting the Vainshtein mechanism, we solve in various physically relevant limits, the retarded Galileon Green's function (for the cubic theory) about a background sourced by a massive spherically symmetric static body. The static limit of our result will aid us, in a forthcoming paper, in understanding the impact of Galileon fields on the problem of motion in the solar system. In this paper, we employ this retarded Green's function to investigate the emission of Galileon radiation generated by the motion of matter lying deep within the Vainshtein radius r_v of the central object: acoustic waves vibrating on its surface, and the motion of compact bodies gravitationally bound to it. If \\lambda is the typical wavelength of the emitted radiation, and r_0 is the typical distance of the source from the central mass, with r_0 radiation rate is suppressed by the ratio (r_v/\\lambda)^{-3/2} at the monopole and dipole orders at high frequencies r_v/\\lambda >> 1. However, at high enough multipole order, the radiation rate is enhanced by powers of r_v/r_0. At low frequencies r_v/\\lambda << 1, and when the motion is non-relativistic, Galileon waves yield a comparable rate for the monopole and dipole terms, and are amplified by powers of the ratio r_v/r_0 for the higher multipoles.

Yi-Zen Chu; Mark Trodden

2012-10-24T23:59:59.000Z

477

Chemical separations schemes for partitioning and transmutation systems.  

SciTech Connect

In the initial phase of the U.S. Accelerator Transmutation of Waste (ATW) program, a single-tier system was foreseen in which the transuranics and long-lived fission products (specifically, {sup 99}Tc and {sup 129}I) recovered from spent LWR oxide fuel would be sent directly to an accelerator-driven transmuter reactor [1]. Because the quantity of fuel to be processed annually was so large (almost 1,500 tons per year), an aqueous solvent extraction process was chosen for LWR fuel processing. Without the need to separate transuranics from one another for feed to the transmuter, it became appropriate to develop an advanced aqueous separations method that became known as UREX. The UREX process employs an added reagent (acetohydroxamic acid) that suppresses the extraction of plutonium and promotes the extraction of technetium together with uranium. Technetium can then be efficiently removed from the uranium; the recovered uranium, being highly decontaminated, can be disposed of as a low-level waste or stored in an unshielded facility for future use. Plutonium and the other transuranic elements, plus the remaining fission products, are directed to the liquid waste stream. This stream is calcined, converting the transuranics and fission products to their oxides. The resulting oxide powder, now representing only about four percent of the original mass of the spent fuel, is reduced to metallic form by means of a pyrometallurgical process. Subsequently, the transuranics are separated from the fission products in another pyro-metallurgical step involving molten salt electrorefining.

Laidler, J.

2002-05-02T23:59:59.000Z

478

Lighting Group: Controls: Systems Integration  

NLE Websites -- All DOE Office Websites (Extended Search)

Systems Integration Building Control Systems Integration Objective This research project investigates how diverse building control systems can be integrated to provide seamless...

479

Vehicle Technologies Office: Battery Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Battery Systems to someone by E-mail Share Vehicle Technologies Office: Battery Systems on Facebook Tweet about Vehicle Technologies Office: Battery Systems on Twitter Bookmark...

480

Advanced Manufacturing Office: Pump Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Pump Systems on Twitter Bookmark Advanced Manufacturing Office: Pump Systems on Google Bookmark Advanced Manufacturing Office: Pump Systems on Delicious Rank Advanced...

Note: This page contains sample records for the topic "halon suppression system" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

ESP: A system utilization benchmark  

E-Print Network (OSTI)

ESP: A System Utilization Benchmark Adrian T. Wong, LeonidEffective System Performance (ESP) test, which is designedEffective System Performance (ESP) benchmark, which measures

Wong, Adrian T.; Oliker, Leonid; Kramer, William T.C.; Kaltz, Teresa L.; Bailey, David H.

2000-01-01T23:59:59.000Z

482

Could the Work System Method Embrace Systems Concepts More Fully?  

Science Conference Proceedings (OSTI)

The work system method was developed iteratively with the overarching goal of helping business professionals understand IT-reliant systems in organizations. It uses general systems concepts selectively, and sometimes implicitly. For example, a work system ...

Steven Alter

2007-04-01T23:59:59.000Z

483

Monitoring system-of-systems requirements in multi product lines  

Science Conference Proceedings (OSTI)

[Context and motivation] Large-scale software-intensive systems are often considered as systems of systems comprising several interrelated product lines from which system variants are derived to meet the overall requirements. [Question/problem] ...

Thomas Klambauer, Gerald Holl, Paul Grünbacher

2013-04-01T23:59:59.000Z

484

Large File System Backup: NERSC Global File System Experience  

E-Print Network (OSTI)

Large File System Backup NERSC Global File System ExperienceNational Laboratory Abstract NERSC’s Global File system (from all compute systems at NERSC, holds files and data from

Mokhtarani, Akbar

2008-01-01T23:59:59.000Z

485

PIA - Human Resources System/Payroll System | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

System PIA - Human Resources - Personal Information Change Request - Idaho National Engineering Laboratory PIA - INL SECURITY INFORMATION MANAGEMENT SYSTEM BUSINESS ENCLAVE...

486

NETL: Gasification Systems - Syngas Processing Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Syngas Processing Systems Syngas Processing Systems Gasification Systems Syngas Processing Systems The various downstream uses of syngas require that most of the contaminants present in raw syngas be removed to very low levels prior to use. Many of these contaminants can contribute to