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Note: This page contains sample records for the topic "argus halon suppression" 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

Memorandum, Managed Phase Out of Halon Fixed Fire Suppression...  

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

the management of the reduction and potential elimination of Halon fire extinguishing systems within the Department of Energy (DOE). This memorandum supplements the joint Office...

2

--No Title--  

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

Remove the ARGUS halon suppression system and replace with wet-pipe sprinklers 735-A, D-wing, Main Floor - ARGUS Halon Suppression System Replacement Savannah River Site Aiken...

3

Health effects of Halon 1301 exposure  

SciTech Connect (OSTI)

An accidental discharge of a Halon 1301 system is reported. Thirty-one workers were assessed, 22 who were present at the time of the discharge, and 9 who worked the next shift. The incident was complicated by a small Freon-22 leak several hours later. Throat, eye, and nasal irritation and lightheadedness were reported by the majority of workers. Workers present during the halon discharge reported significantly more lightheadedness, headache, voice change, cough, and a fast heartbeat than did those who worked the later shift. These differences were significant even after correcting for confounding factors such as age, sex, and sense of anxiety at the time of the incident. The possible causes for the irritant symptoms include breakdown products of Halon 1301 and Freon-22 or contaminants from the halon discharge system. Although these irritant effects may not be an effect of Halon 1301 alone, they may occur in these discharge situations, and workers should be advised of this possibility. The possible cardiac and central nervous system effects also should be considered. The importance of a clear-cut protocol to deal with such incidents as well as worker education are discussed.

Holness, D.L.; House, R.A. (Department of Occupational and Environmental Health, St Michael's Hospital, University of Toronto (Canada))

1992-07-01T23:59:59.000Z

4

CX-005867: Categorical Exclusion Determination | Department of...  

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

River Operations Office Remove the ARGUS halon suppression system and replace with wet-pipe sprinklers. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-005867.pdf More Documents &...

5

ARGUS-PRIMA: Wind Power Prediction | Argonne National Laboratory  

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

ARGUS-PRIMA: Wind Power Prediction ARGUS-PRIMA: Wind Power Prediction ARGUS-PRIMA is a software platform for testing statistical algorithms for short-term wind power forecasting....

6

argus detector messung: Topics by E-print Network  

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

Experiments show that Argus-1 detects transient Sorin, Daniel J. 22 ARGUS: Rete + DBMS Efficient Persistent Profile Matching on Large-Volume Data Streams Materials Science...

7

Requirements And Instructions For Shipping Halon To The Defense Logistics Agency (DLA) Halon Repository  

Broader source: Energy.gov [DOE]

Disposition of excess Halon 1301 is now done in accordance with Executive Order 13148 — “Greening the Government Through Leadership in Environmental Management ”, Section 505 (c). An SF-122 form (or equivalent documentation) should be approved by the DLA prior to shipment.

8

argus event: Topics by E-print Network  

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

data dynamics, and presents new challenges that are not addressed by traditional DBMS technologies Carbonell, Jaime 24 In GPS World, April 2000, pp. 20-30. Eyes of Argus...

9

Argus Energy WV, LLC wins 2007 Wetlands West Virginia Award  

SciTech Connect (OSTI)

Argus Energy's Kiah Creek Operation has received the 2007 Wetlands West Virginia Award presented by the West Virginian Coal Association. The operation was originally a 1267 acre underground mine in the Coalburg seam. Underground mining commenced in 2000 until the end of 2003 with more than two million tons of coal being produced. The creation of the wetlands was achieved during the operations. 8 photos.

NONE

2007-07-15T23:59:59.000Z

10

Memorandum, Managed Phase Out of Halon Fixed Fire Suppression Systems - May  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdfGeorgeDoesn't32 Master EM ProjectMemoDepartment of Energy| Department5,

11

The Caribbean spiny lobster, Panuli-rus argus, is distributed from Brazil  

E-Print Network [OSTI]

870 The Caribbean spiny lobster, Panuli- rus argus, is distributed from Brazil throughout the Caribbean and the Gulf of Mexico to approximately North Car- olina and Bermuda (Holthius, 1991). It supports major commercial fisheries in Florida, the Caribbean and Brazil. Commercially, P. argus is especially

12

The Argus Eye: A New Tool for Robotics Patrick Baker, Abhijit S. Ogale and Cornelia Fermuller  

E-Print Network [OSTI]

The Argus Eye: A New Tool for Robotics Patrick Baker, Abhijit S. Ogale and Cornelia Ferm Introduction: Eyes, Control and 3D Motion What an amazing display it is to watch a bird of prey circling throughout the animal kingdom. Michael Land provides a land- scape of eye evolution in [2]. Considering

Fermüller, Cornelia

13

A New Argus Direct Conversion Receiver and Digital Array Receiver/Processor  

E-Print Network [OSTI]

A New Argus Direct Conversion Receiver and Digital Array Receiver/Processor Grant Hampson and Steve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 References 20 Appendix A: Direct Conversion FPGA Source Code 21 Appendix B: Digital Receiver system. The new architecture consists of four main components: a Direct Conversion Receiver (DCR

Ellingson, Steven W.

14

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

SciTech Connect (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

15

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

16

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

17

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

18

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

19

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. 3 figs.

Gluntz, D.M.

1994-10-04T23:59:59.000Z

20

Noise suppressing capillary separation system  

DOE Patents [OSTI]

A noise-suppressing capillary separation system for detecting the real-time presence or concentration of an analyte in a sample is provided. The system contains a capillary separation means through which the analyte is moved, a coherent light source that generates a beam which is split into a reference beam and a sample beam that irradiate the capillary, and a detector for detecting the reference beam and the sample beam light that transmits through the capillary. The laser beam is of a wavelength effective to be absorbed by a chromophore in the capillary. The system includes a noise suppressing system to improve performance and accuracy without signal averaging or multiple scans. 13 figs.

Yeung, E.S.; Xue, Y.

1996-07-30T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Engineered Decoherence: Characterization and Suppression  

E-Print Network [OSTI]

Due to omnipresent environmental interferences, quantum coherences inevitably undergo irreversible transformations over certain time-scales, thus leading to the loss of encoded information. This process, known as decoherence, has been a major obstacle in realizing efficient quantum information processors. Understanding the mechanism of decoherence is crucial in developing tools to inhibit it. Here we utilize a method proposed by Cory and co-workers [Phys. Rev. A 67, 062316 (2003)] to engineer artificial decoherence in the system qubits by randomly perturbing their surrounding ancilla qubits. Using a two qubit nuclear magnetic resonance quantum register, we characterize the artificial decoherence by noise spectroscopy and quantum process tomography. Further, we study the efficacy of dynamical decoupling sequences in suppressing the artificial decoherence. Here we describe the experimental results and their comparisons with theoretical simulations.

Swathi S. Hegde; T. S. Mahesh

2014-03-21T23:59:59.000Z

22

Issues in Numerical Simulation of Fire Suppression  

SciTech Connect (OSTI)

This paper outlines general physical and computational issues associated with performing numerical simulation of fire suppression. Fire suppression encompasses a broad range of chemistry and physics over a large range of time and length scales. The authors discuss the dominant physical/chemical processes important to fire suppression that must be captured by a fire suppression model to be of engineering usefulness. First-principles solutions are not possible due to computational limitations, even with the new generation of tera-flop computers. A basic strategy combining computational fluid dynamics (CFD) simulation techniques with sub-grid model approximations for processes that have length scales unresolvable by gridding is presented.

Tieszen, S.R.; Lopez, A.R.

1999-04-12T23:59:59.000Z

23

Quantifying precipitation suppression due to air Pollution  

E-Print Network [OSTI]

Quantifying precipitation suppression due to air Pollution First author: Amir Givati The Hebrew January 2004 #12;ABSTRACT: Urban and industrial air pollution has been shown qualitatively to suppress of the ratio of hill/coast precipitation during the 20th century in polluted areas in line with the increasing

Li, Zhanqing

24

Propofol and sevoflurane induce distinct burst suppression patterns in rats  

E-Print Network [OSTI]

Burst suppression is an EEG pattern characterized by alternating periods of high-amplitude activity (bursts) and relatively low amplitude activity (suppressions). Burst suppression can arise from several different pathological ...

Westover, M. Brandon

25

Aeroelastic stability analysis and passive instability suppression  

E-Print Network [OSTI]

for passive instability suppression with the increasing wind turbine size. This can be related to low Introduction Known and new aeroelastic instability mechanisms for wind turbines are investigated in this paper]. Tower modes of stall-regulated turbines may also have low, or nega- tive damping because the blades

26

Water Mist Suppression in Conjunction with Displacement  

E-Print Network [OSTI]

Water Mist Suppression in Conjunction with Displacement Ventilation By Benjamin Piers Hume-2758 #12;#12;Displacement Water Mist System Masters of Fire Engineering Thesis 2003 i A man of genius makes Water Mist System Masters of Fire Engineering Thesis 2003 ii #12;Displacement Water Mist System Masters

Hickman, Mark

27

Benchmark enclosure fire suppression experiments - phase 1 test report.  

SciTech Connect (OSTI)

A series of fire benchmark water suppression tests were performed that may provide guidance for dispersal systems for the protection of high value assets. The test results provide boundary and temporal data necessary for water spray suppression model development and validation. A review of fire suppression in presented for both gaseous suppression and water mist fire suppression. The experimental setup and procedure for gathering water suppression performance data are shown. Characteristics of the nozzles used in the testing are presented. Results of the experiments are discussed.

Figueroa, Victor G.; Nichols, Robert Thomas; Blanchat, Thomas K.

2007-06-01T23:59:59.000Z

28

Suppression of Stable Flies on Cattle  

E-Print Network [OSTI]

populations is sanitation. In confined animal facilities, a top priority should be to eliminate stable fly breeding sites as often as possible. To do this, remove and spread decomposing vegetation or bedding material that has become mixed with urine and feces... but in concert with other meth- ods, such as sanitation. Chemical control: If a stable fly problem persists, an insecticide can be used. Many compounds are available for suppressing adult and larval stable fly populations. Animals can be treated as needed...

Tomberlin, Jeffery K.

2004-07-01T23:59:59.000Z

29

Benefits of ARG-US "Smart Drum"  

E-Print Network [OSTI]

-Gallon Drum with Foamed Liner 3/4-inch Blind Plug (2) 1/2-inch Socket Head Screw 30-Gallon Lid Silicone-Gallon Drum Lid with 3/4 & 2 inch Fittings 30-Gallon Drum DOW Polyurethane BETAFOAM 55-Gallon Liner Axial boundary for the package's radioactive contents. A robust split-ring closure device fabricated from 16

Kemner, Ken

30

Argus Power Technology | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160 East 300AlgoilEnergy InformationArcata,Koblitz Jump to:Argonaut BioFuels

31

Metasurfaces for suppressing reflection over broadband  

E-Print Network [OSTI]

Surfaces patterned with arrays of quasi-periodic air holes having conical depth profile have been studied for their effectiveness in suppressing air-substrate reflection in the wavelength range of 450-1350 nm (limited by our measurement). The role of quasi-periodic air-hole pattern, depth of holes and launch angle on the observed antireflection behavior are investigated. The average optical transmittance of the patterned quartz substrate at near normal incidence is more than 97% and reflectance is less than 2%. Patterned quartz surfaces with 450 nm thin graded rarefaction region maintain the antireflective property up to 30{\\deg} (limited by our measurements) angle of incidence.

Patra, Anuradha; Nagarajan, Arvind; Achanta, Venu Gopal

2015-01-01T23:59:59.000Z

32

A spray-suppression model for turbulent combustion  

SciTech Connect (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

33

Suppression of Magnetic State Decoherence Using Ultrafast Optical Pulses  

E-Print Network [OSTI]

It is shown that the magnetic state decoherence produced by collisions in a thermal vapor can be suppressed by the application of a train of ultrafast optical pulses.

C. Search; P. R. Berman

2000-03-01T23:59:59.000Z

34

Fire Foe: A Glovebox Fire Suppression System | Department of...  

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

Envirogel Extinguishing Agent NRTL Qualification Fire Test Proof-of-Concept Testing Seismic Reliability Fire Foe: A Glovebox Fire Suppression System More Documents &...

35

acids suppresses diethylnitrosamine-induced: Topics by E-print...  

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

Topic Index 1 Suppression of rice methane emission by sulfate deposition in simulated acid rain Geosciences Websites Summary: from rice agriculture. Emissions from rice plants...

36

acid suppression therapy: Topics by E-print Network  

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

2006-01-01 2 Suppression of rice methane emission by sulfate deposition in simulated acid rain Geosciences Websites Summary: from rice agriculture. Emissions from rice plants...

37

Suppressive effects of ketamine on macrophage functions  

SciTech Connect (OSTI)

Ketamine is an intravenous anesthetic agent. Clinically, induction of anesthesia with ketamine can cause immunosuppression. Macrophages play important roles in host defense. In this study, we attempted to evaluate the effects of ketamine on macrophage functions and its possible mechanism using mouse macrophage-like Raw 264.7 cells as the experimental model. Exposure of macrophages to 10 and 100 {mu}M ketamine, which correspond to 0.1 and 1 times the clinically relevant concentration, for 1, 6, and 24 h had no effect on cell viability or lactate dehydrogenase release. When the administered concentration reached 1000 {mu}M, ketamine caused a release of lactate dehydrogenase and cell death. Ketamine, at 10 and 100 {mu}M, did not affect the chemotactic activity of macrophages. Administration of 1000 {mu}M ketamine in macrophages resulted in a decrease in cell migration. Treatment of macrophages with ketamine reduced phagocytic activities. The oxidative ability of macrophages was suppressed by ketamine. Treatment with lipopolysaccharide induced TNF-{alpha}, IL-1{beta}, and IL-6 mRNA in macrophages. Administration of ketamine alone did not influence TNF-{alpha}, IL-1{beta}, or IL-6 mRNA production. Meanwhile, cotreatment with ketamine and lipopolysaccharide significantly inhibited lipopolysaccharide-induced TNF-{alpha}, IL-1{beta}, and IL-6 mRNA levels. Exposure to ketamine led to a decrease in the mitochondrial membrane potential. However, the activity of mitochondrial complex I NADH dehydrogenase was not affected by ketamine. This study shows that a clinically relevant concentration of ketamine (100 {mu}M) can suppress macrophage function of phagocytosis, its oxidative ability, and inflammatory cytokine production possibly via reduction of the mitochondrial membrane potential instead of direct cellular toxicity.

Chang Yi [Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan (China); Department of Anesthesiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan (China); Chen, T.-L. [Department of Anesthesiology, Wan-Fang Hospital, College of Medicine, Taipei Medical University, Taipei, Taiwan (China); Sheu, J.-R. [Department of Anesthesiology, Wan-Fang Hospital, College of Medicine, Taipei Medical University, Taipei, Taiwan (China); Chen, R.-M. [Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan (China) and Department of Anesthesiology, Wan-Fang Hospital, College of Medicine, Taipei Medical University, Taipei, Taiwan (China)]. E-mail: rmchen@tmu.edu.tw

2005-04-01T23:59:59.000Z

38

CHAPTER: In-Situ Characterization of Stimulating Microelectrode Arrays: Study of an Idealized Structure Based on Argus II Retinal implantsBOOK TITLE: Implantable Neural Prostheses 2: Techniques and Engineering Approaches, D.M. Zhou and E. Greenbaum, Eds., Springer, NY 2009  

SciTech Connect (OSTI)

The development of a retinal prosthesis for artificial sight includes a study of the factors affecting the structural and functional stability of chronically implanted microelectrode arrays. Although neuron depolarization and propagation of electrical signals have been studied for nearly a century, the use of multielectrode stimulation as a proposed therapy to treat blindness is a frontier area of modern ophthalmology research. Mapping and characterizing the topographic information contained in the electric field potentials and understanding how this information is transmitted and interpreted in the visual cortex is still very much a work in progress. In order to characterize the electrical field patterns generated by the device, an in vitro prototype that mimics several of the physical and chemical parameters of the in vivo visual implant device was fabricated. We carried out multiple electrical measurements in a model 'eye,' beginning with a single electrode, followed by a 9-electrode array structure, both idealized components based on the Argus II retinal implants. Correlating the information contained in the topographic features of the electric fields with psychophysical testing in patients may help reduce the time required for patients to convert the electrical patterns into graphic signals.

Greenbaum, Elias [ORNL; Sanders, Charlene A [ORNL; Kandagor, Vincent [ORNL

2010-01-01T23:59:59.000Z

39

Global microRNA depletion suppresses tumor angiogenesis  

E-Print Network [OSTI]

MicroRNAs delicately regulate the balance of angiogenesis. Here we show that depletion of all microRNAs suppresses tumor angiogenesis. We generated microRNA-deficient tumors by knocking out Dicer1. These tumors are highly ...

Chen, Sidi

40

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

2009-10-09T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

antigens suppresses murine: Topics by E-print Network  

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

in adulthood of autoreactive T cells specific to that antigen. The renal-specific ... Marshall, Naomi Jane 2009-01-01 17 Thymosin Beta 4 has tumor suppressive effects and its...

42

COMMUNICATION Escherichia coli tatC Mutations that Suppress Defective  

E-Print Network [OSTI]

COMMUNICATION Escherichia coli tatC Mutations that Suppress Defective Twin-Arginine Transporter@che.utexas.edu. Abbreviations used: Tat, twin-arginine translocation; MBP, maltose-binding protein; GFP, green fluorescence

Georgiou, George

43

Scanning probe microscopy with inherent disturbance suppression using micromechanical systems  

E-Print Network [OSTI]

All scanning probe microscopes (SPMs) are affected by disturbances, or mechanical noise, in their environments which can limit their imaging resolution. This thesis introduces a general approach for suppressing out-of-plane ...

Sparks, Andrew William, 1977-

2005-01-01T23:59:59.000Z

44

Suppression of pool fires with HRC-125 in a simulated engine nacelle.  

SciTech Connect (OSTI)

CFD simulations are conducted to predict the distribution of fire suppressant in an engine nacelle and to predict the suppression of pool fires by the application of this suppressant. In the baseline configuration, which is based on an installed system, suppressant is injected through four nozzles at a rate fast enough to suppress all simulated pool fires. Variations that reduce the mass of the suppression system (reducing the impact of the suppression system on meeting mission needs) are considered, including a reduction in the rate of suppressant injection, a reduction in the mass of suppressant and a reduction in the number of nozzles. In general, these variations should work to reduce the effectiveness of the suppression system, but the CFD results point out certain changes that have negligible impact, at least for the range of phenomena considered here. The results are compared with measurements where available. Comparisons with suppressant measurements are reasonable. A series of twenty-three fire suppression tests were conducted to check the predictions. The pre-test predictions were generally successful in identifying the range of successful suppression tests. In two separate cases, each where one nozzle of the suppression system was capped, the simulation results did indicate a failure to suppress for a condition where the tests indicated successful suppression. When the test-suppressant discharge rate was reduced by roughly 25%, the tests were in agreement with the predictions. That is, the simulations predict a failure to suppress slightly before observed in these cases.

Keyser, David R. (INS, Inc., Lexington Park, MD); Hewson, John C.

2007-06-01T23:59:59.000Z

45

Climate Dependency of Tree Growth Suppressed by Acid Deposition  

E-Print Network [OSTI]

uptake). These soil changes coincided with decreased diameter growth and a suppression of climateClimate Dependency of Tree Growth Suppressed by Acid Deposition Effects on Soils in Northwest Russia G R E G O R Y B . L A W R E N C E , * , A N D R E I G . L A P E N I S , D A N B E R G G R E N

Lapenas, Andrei G.

46

Reactor Neutrino Flux Uncertainty Suppression on Multiple Detector Experiments  

E-Print Network [OSTI]

This publication provides a coherent treatment for the reactor neutrino flux uncertainties suppression, specially focussed on the latest $\\theta_{13}$ measurement. The treatment starts with single detector in single reactor site, most relevant for all reactor experiments beyond $\\theta_{13}$. We demonstrate there is no trivial error cancellation, thus the flux systematic error can remain dominant even after the adoption of multi-detector configurations. However, three mechanisms for flux error suppression have been identified and calculated in the context of Double Chooz, Daya Bay and RENO sites. Our analysis computes the error {\\it suppression fraction} using simplified scenarios to maximise relative comparison among experiments. We have validated the only mechanism exploited so far by experiments to improve the precision of the published $\\theta_{13}$. The other two newly identified mechanisms could lead to total error flux cancellation under specific conditions and are expected to have major implications on the global $\\theta_{13}$ knowledge today. First, Double Chooz, in its final configuration, is the only experiment benefiting from a negligible reactor flux error due to a $\\sim$90\\% geometrical suppression. Second, Daya Bay and RENO could benefit from their partial geometrical cancellation, yielding a potential $\\sim$50\\% error suppression, thus significantly improving the global $\\theta_{13}$ precision today. And third, we illustrate the rationale behind further error suppression upon the exploitation of the inter-reactor error correlations, so far neglected. So, our publication is a key step forward in the context of high precision neutrino reactor experiments providing insight on the suppression of their intrinsic flux error uncertainty, thus affecting past and current experimental results, as well as the design of future experiments.

Andi Cucoanes; Pau Novella; Anatael Cabrera; Muriel Fallot; Anthony Onillon; Michel Obolensky; Frederic Yermia

2015-01-02T23:59:59.000Z

47

A simplified model of decontamination by BWR steam suppression pools  

SciTech Connect (OSTI)

Phenomena that can decontaminate aerosol-laden gases sparging through steam suppression pools of boiling water reactors during reactor accidents are described. Uncertainties in aerosol properties, aerosol behavior within gas bubbles, and bubble behavior in plumes affect predictions of decontamination by steam suppression pools. Uncertainties in the boundary and initial conditions that are dictated by the progression of severe reactor accidents and that will affect predictions of decontamination by steam suppression pools are discussed. Ten parameters that characterize boundary and initial condition uncertainties, nine parameters that characterize aerosol property and behavior uncertainties, and eleven parameters that characterize uncertainties in the behavior of bubbles in steam suppression pools are identified. Ranges for the values of these parameters and subjective probability distributions for parametric values within the ranges are defined. These uncertain parameters are used in Monte Carlo uncertainty analyses to develop uncertainty distributions for the decontamination that can be achieved by steam suppression pools and the size distribution of aerosols that do emerge from such pools. A simplified model of decontamination by steam suppression pools is developed by correlating features of the uncertainty distributions for total decontamination factor, DF(total), mean size of emerging aerosol particles, d{sub p}, and the standard deviation of the emerging aerosol size distribution, {sigma}, with pool depth, H. Correlations of the median values of the uncertainty distributions are suggested as the best estimate of decontamination by suppression pools. Correlations of the 10 percentile and 90 percentile values of the uncertainty distributions characterize the uncertainty in the best estimates. 295 refs., 121 figs., 113 tabs.

Powers, D.A.

1997-05-01T23:59:59.000Z

48

$J/?$ suppression in the threshold model and QGP formation time  

E-Print Network [OSTI]

In the QGP motivated threshold model, in addition to the normal nuclear absorption, $J/\\psi$'s are subjected to an additional "anomalous" suppression. We have analysed the recently published PHENIX data on the participant number dependence of the nuclear modification factor for $J/\\psi$'s in Au+Au collisions and extracted the anomalous suppression required to explain the data. At mid rapidity $J/\\psi$'s are anomalously suppressed only above a threshold density $n_c$=3.73 fm$^{-2}$. The forward rapidity data on the otherhand require that $J/\\psi$'s are continuously "anomalously" suppressed. The analysis strongly indicate that in mid rapidity $J/\\psi$'s are suppressed in a deconfined medium. Using the PHENIX data on the participant number dependence of the Bjorken energy density, we have also estimated the QGP formation time. For critical temperature $T_c$=192 MeV, estimated QGP formation time ranges between 0.06-0.08 fm/c.

A. K. Chaudhuri

2007-09-03T23:59:59.000Z

49

Fire suppression efficiency screening using a counterflow cylindrical burner  

SciTech Connect (OSTI)

The design and validation of a counterflow cylindrical burner for fire suppression efficiency screening are described. The stability limits of the burner were mapped using various fuel (propane) and oxidizer (air) flows. The stability envelopes compared favorably with those reported in the literature. The apparatus was characterized using inert gases (argon, helium, and nitrogen), and the relative fire suppression efficiency ranking of these three gases was found to be commensurate with that from cup-burner tests. For liquid suppression experiments, a piezoelectric droplet generator was used to form droplets (<100 {micro}m). Water was used as a representative liquid suppressant to study the feasibility of using such a burner for screening liquid agents. Extinction was facilitated with the addition of water droplets, and the effect of water became more pronounced when its application rate was increased. Suppression experiments using water with and without nitrogen dilution in the oxidizer stream were also performed. Flame extinction due to the combined effect of water and nitrogen dilution was demonstrated.

Yang, J.C.; Donnelly, M.K.; Prive, N.; Grosshandler, W.L.

1999-07-01T23:59:59.000Z

50

Technology Assessment of Dust Suppression Techniques Applied During Structural Demolition  

SciTech Connect (OSTI)

Hanford, Fernald, Savannah River, and other sites are currently reviewing technologies that can be implemented to demolish buildings in a cost-effective manner. In order to demolish a structure properly and, at the same time, minimize the amount of dust generated from a given technology, an evaluation must be conducted to choose the most appropriate dust suppression technology given site-specific conditions. Thus, the purpose of this research, which was carried out at the Hemispheric Center for Environmental Technology (HCET) at Florida International University, was to conduct an experimental study of dust aerosol abatement (dust suppression) methods as applied to nuclear D and D. This experimental study targeted the problem of dust suppression during the demolition of nuclear facilities. The resulting data were employed to assist in the development of mathematical correlations that can be applied to predict dust generation during structural demolition.

Boudreaux, J.F.; Ebadian, M.A.; Williams, P.T.; Dua, S.K.

1998-10-20T23:59:59.000Z

51

Reactor Neutrino Flux Uncertainty Suppression on Multiple Detector Experiments  

E-Print Network [OSTI]

This publication provides a coherent treatment for the reactor neutrino flux uncertainties suppression, specially focussed on the latest $\\theta_{13}$ measurement. The treatment starts with single detector in single reactor site, most relevant for all reactor experiments beyond $\\theta_{13}$. We demonstrate there is no trivial error cancellation, thus the flux systematic error can remain dominant even after the adoption of multi-detector configurations. However, three mechanisms for flux error suppression have been identified and calculated in the context of Double Chooz, Daya Bay and RENO sites. Our analysis computes the error {\\it suppression fraction} using simplified scenarios to maximise relative comparison among experiments. We have validated the only mechanism exploited so far by experiments to improve the precision of the published $\\theta_{13}$. The other two newly identified mechanisms could lead to total error flux cancellation under specific conditions and are expected to have major implications o...

Cucoanes, Andi; Cabrera, Anatael; Fallot, Muriel; Onillon, Anthony; Obolensky, Michel; Yermia, Frederic

2015-01-01T23:59:59.000Z

52

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

2003-02-10T23:59:59.000Z

53

Suppressed serum prolactin in sinoaortic-denervated rats  

SciTech Connect (OSTI)

The authors investigated the effect of arterial baroreceptor deafferentation on serum and pituitary prolactin (PRL) and on catecholamines in median eminence (ME) and anterior and posterior pituitaries. Male Wistar rats were sinoaortic denervated (SAD) or sham operated (SO). Three days after surgery serum prolactin, measured by radioimmunoassay, was suppressed in SAD rats, and dopamine (DA) and norepinephrine (NE) concentrations, measured by radioenzymatic or high-performance liquid chromatography electron capture methods, were significantly reduced in ME of SAD rats. Simultaneously, anterior pituitary of SAD rats had significant increases in both catecholamines, whereas posterior pituitary showed no changes. Four hours after surgery serum PRL was also reduced in SAD rats, but no changes in ME catecholamines were found. Mean arterial pressure (MAP) and heart rate were measured before and after injection of bromocriptine in SAD and SO rats 3 days after surgery. Bromocriptine markedly suppressed serum PRL in both groups and reduced MAP from 144 +/- 10 to 84 +/- 5 and from 116 +/- 2 to 99 +/- 3 in SAD and SO rats, respectively; heart rate was reduced in SAD rats. They conclude that the SAD rat is a model of hypertension with suppressed serum PRL and that interruption of arterial baroreceptor nerves suppresses PRL secretion probably by modulating tuberoinfundibular turnover of catecholamines.

Alexander, N.; Melmed, S.; Morris, M.

1987-02-01T23:59:59.000Z

54

Justification to remove 333 Building fire suppression system  

SciTech Connect (OSTI)

Justification to remove the 333 Building fire suppression system is provided. The Maximum Possible Fire Loss (MPFL) is provided (approximately $800K), potential radiological and toxicological impacts from a postulated fire are discussed, Life Safety Code issues are addressed, and coordination with the Hanford Fire Department is assured.

Benecke, M.W.

1995-12-04T23:59:59.000Z

55

SUPPRESSION OF DIELECTRONIC RECOMBINATION DUE TO FINITE DENSITY EFFECTS  

SciTech Connect (OSTI)

We have developed a general model for determining density-dependent effective dielectronic recombination (DR) rate coefficients in order to explore finite-density effects on the ionization balance of plasmas. Our model consists of multiplying by a suppression factor those highly-accurate total zero-density DR rate coefficients which have been produced from state-of-the-art theoretical calculations and which have been benchmarked by experiment. The suppression factor is based upon earlier detailed collision-radiative calculations which were made for a wide range of ions at various densities and temperatures, but used a simplified treatment of DR. A general suppression formula is then developed as a function of isoelectronic sequence, charge, density, and temperature. These density-dependent effective DR rate coefficients are then used in the plasma simulation code Cloudy to compute ionization balance curves for both collisionally ionized and photoionized plasmas at very low (n{sub e} = 1 cm{sup -3}) and finite (n{sub e} = 10{sup 10} cm{sup -3}) densities. We find that the denser case is significantly more ionized due to suppression of DR, warranting further studies of density effects on DR by detailed collisional-radiative calculations which utilize state-of-the-art partial DR rate coefficients. This is expected to impact the predictions of the ionization balance in denser cosmic gases such as those found in nova and supernova shells, accretion disks, and the broad emission line regions in active galactic nuclei.

Nikolic, D.; Gorczyca, T. W.; Korista, K. T. [Western Michigan University, Kalamazoo, MI (United States); Ferland, G. J. [University of Kentucky, Lexington, KY (United States); Badnell, N. R. [University of Strathclyde, Glasgow (United Kingdom)

2013-05-01T23:59:59.000Z

56

Surface-wave-enabled darkfield aperture for background suppression during  

E-Print Network [OSTI]

can be directly incorporated onto optical sensors to accom- plish predetection background suppression if the sensor is fully capable of measuring the same weak signal in the absence of background (1, 2- trivial to employ. A sensor that can intrinsically cancel a strong background prior to signal detection

Yang, Changhuei

57

Experiment on suppression of spontaneous undulator radiation at ATF  

SciTech Connect (OSTI)

We propose undertaking a demonstration experiment on suppressing spontaneous undulator radiation from an electron beam at BNL's Accelerator Test Facility (ATF). We describe the method, the proposed layout, and a possible schedule. There are several advantages in strongly suppressing shot noise in the electron beam, and the corresponding spontaneous radiation. The self-amplified spontaneous (SASE) emission originating from shot noise in the electron beam is the main source of noise in high-gain FEL amplifiers. It may negatively affect several HG FEL applications ranging from single- to multi-stage HGHG FELs. SASE saturation also imposes a fundamental hard limit on the gain of an FEL amplifier in a coherent electron-cooling scheme. A novel active method for suppressing shot noise in relativistic electron beams by many orders-of-magnitude was recently proposed. While theoretically such strong suppression appears feasible, the performance and applicability of this novel method must be evaluated experimentally. Several practical questions about the proposed noise suppressor, such as 3D effects and/or sensitivity to the e-beam parameters also require experimental clarification. To do this, we propose here a proof-of-principle experiment using elements of the VISA FEL at BNL's Accelerator Test Facility.

Litvinenko,V.; Yakimenko, V.

2009-08-23T23:59:59.000Z

58

Background Suppression in Near-Field Optical Imaging  

E-Print Network [OSTI]

irradiation of the optical antenna (e.g., tip or particle) also directly irradiates the sample and thereforeBackground Suppression in Near-Field Optical Imaging Christiane Ho¨ppener, Ryan Beams, and Lukas Novotny* Institute of Optics, UniVersity of Rochester, Rochester, New York 14627 Received December 25

Novotny, Lukas

59

Seismic shape parameters estimation and ground-roll suppression using  

E-Print Network [OSTI]

Seismic shape parameters estimation and ground-roll suppression using vector-sensor beamforming the problem of estimating the shape parameters of seismic wavefields in linear arrays. The purpose of the subsurface layers from the seismic wavefields registered by surface sensors. However, only the waves

Spagnolini, Umberto

60

Stable plateau formation and Brillouin suppression in laser plasma  

SciTech Connect (OSTI)

Among the variety of ponderomotively induced density structures in laser produced plasmas in one dimension, it is shown by particle-in-cell simulations that the stable plateau formation at critical, subcritical, and above critical density is possible. Stimulated Brillouin backscattering is suppressed with increasing laser intensity.

Mulser, P. [Theoretical Quantum Electronics (TQE), Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany); Weng, S. M. [Theoretical Quantum Electronics (TQE), Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany); Department of Physics, Ludwig-Maximilians-Universitaet Muenchen, D-80333 Munich (Germany)

2010-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Low Dose Suppression of Neoplastic Transformation in Vitro  

SciTech Connect (OSTI)

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

62

E-Print Network 3.0 - ambiguous range suppression Sample Search...  

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

Page: << < 1 2 3 4 5 > >> 1 SUPPRESSED AMBIGUITY IN RANGE BY PHASE-CODED WAVEFORMS Sune R.J. Axelsson Summary: SUPPRESSED AMBIGUITY IN RANGE BY PHASE-CODED WAVEFORMS Sune R.J....

63

Kalman filtering to suppress spurious signals in Adaptive Optics control  

SciTech Connect (OSTI)

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

64

Analysis of Shot Noise Suppression for Electron Beams  

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

Shot noise can affect the performance of free-electron lasers (FELs) by driving instabilities (e.g., the microbunching instability) or by competing with seeded density modulations. Recent papers have proposed suppressing shot noise to enhance FEL performance. In this paper we use a onedimensional (1D) model to calculate the noise amplification from an energy modulation (e.g., electron interactions from space charge or undulator radiation) followed by a dispersive section. We show that, for a broad class of interactions, selecting the correct dispersive strength suppresses shot noise across a wide range of frequencies. The final noise level depends on the beam’s energy spread and the properties of the interaction potential. We confirm and illustrate our analytical results with 1D simulations.

Ratner, Daniel; Huang, Zhirong; Stupakov, Gennady

2015-02-02T23:59:59.000Z

65

Nuclear absorption and $J/?$ suppression in Pb+Pb collisions  

E-Print Network [OSTI]

We have analyzed the NA58 data on $J/\\psi$ suppression in Pb+Pb collisions. $J/\\psi$ production is assumed to be a two step process, (i) formation of $c\\bar{c}$ pair, which is accurately calculable in QCD and (ii) formation of $J/\\psi$ meson from the $c\\bar{c}$ pair, which can be conveniently parameterized. In a pA/AA collision, a $c\\bar{c}$ pair gain relative square momentum as it passes through the nuclear medium and some of the $c\\bar{c}$ pairs can gain enough momentum to cross the threshold to become an open charm meson, leading to suppression in pA/AA collisions. A new prescription is proposed for the gain in momentum square, consistent with Krammer process. The model without any free parameter could explain the $E_T$ dependence of $J/\\psi$ over Drell-Yan ratio.

A. K. Chaudhuri

2002-03-18T23:59:59.000Z

66

Optical analog of Rabi oscillation suppression due to atomic motion  

E-Print Network [OSTI]

The Rabi oscillations of a two-level atom illuminated by a laser on resonance with the atomic transition may be suppressed by the atomic motion through averaging or filtering mechanisms. The optical analogs of these velocity effects are described. The two atomic levels correspond in the optical analogy to orthogonal polarizations of light and the Rabi oscillations to polarization oscillations in a medium which is optically active, naturally or due to a magnetic field. In the later case, the two orthogonal polarizations could be selected by choosing the orientation of the magnetic field, and one of them be filtered out. It is argued that the time-dependent optical polarization oscillations or their suppression are observable with current technology.

J. G. Muga; B. Navarro

2005-05-13T23:59:59.000Z

67

Suppression of large-scale perturbations by stiff solid  

E-Print Network [OSTI]

Evolution of large-scale scalar perturbations in the presence of stiff solid (solid with pressure to energy density ratio > 1/3) is studied. If the solid dominated the dynamics of the universe long enough, the perturbations could end up suppressed by as much as several orders of magnitude. To avoid too steep large-angle power spectrum of CMB, radiation must have prevailed over the solid long enough before recombination.

Vladimír Balek; Matej Škovran

2015-01-28T23:59:59.000Z

68

Suppression of large-scale perturbations by stiff solid  

E-Print Network [OSTI]

Evolution of large-scale scalar perturbations in the presence of stiff solid (solid with pressure to energy density ratio > 1/3) is studied. If the solid dominated the dynamics of the universe long enough, the perturbations could end up suppressed by as much as several orders of magnitude. To avoid too steep large-angle power spectrum of CMB, radiation must have prevailed over the solid long enough before recombination.

Balek, Vladimír

2015-01-01T23:59:59.000Z

69

Suppression of Rayleigh Taylor instability in strongly coupled plasmas  

SciTech Connect (OSTI)

The Rayleigh Taylor instability in a strongly coupled plasma medium has been investigated using the equations of generalized hydrodynamics. It is demonstrated that the visco-elasticity of the strongly coupled medium due to strong inter particle correlations leads to a suppression of the Rayleigh Taylor instability unless certain threshold conditions are met. The relevance of these results to experiments on laser compression of matter to high densities including those related to inertial confinement fusion using lasers has also been shown.

Das, Amita; Kaw, Predhiman [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2014-06-15T23:59:59.000Z

70

The Receptor SIGIRR Suppresses Th17 Cell Proliferation via Inhibition of the Interleukin-1  

E-Print Network [OSTI]

-induced arthritis (CIA), were suppressed (Taylor, 2003; Hofstetter et al., 2005; Gonzalez-Garci´a et al., 2009

71

$J/?$ suppression in Pb+Pb collisions, a conventional description  

E-Print Network [OSTI]

We have analyzed the latest NA50 data on $J/\\psi$ suppression in Pb + Pb collisions. $J/\\psi$ production is assumed to be a two step process, (i) formation of $c\\bar{c}$ pair, which is accurately calculable in QCD and (ii) formation of $J/\\psi$ meson from the $c\\bar{c}$ pair, which can be conveniently parameterized. In a pA/AA collision, the as the $c\\bar{c}$ pair pass through the nuclear medium, it gain relative square momentum at the rate of $\\epsilon^2$ per unit path length. As a result, some of the $c\\bar{c}$ pairs can gain enough momentum to cross the threshold to become an open charm meson, leading to suppression in pA/AA collisions. The parameters of the model were fixed from experimental data on the total $J/\\psi$ cross section as a function of effective nuclear length. The model without any free parameter, give excellent description of NA50 data on $E_T$ dependence of $J/\\psi$ to Drell-Yan ratio. The model was applied to predict the $E_T$ dependence of $J/\\psi$ at RHIC energy. Much larger suppression of $J/\\psi$, in agreement with other model calculations are predicted.

A. K. Chaudhuri

2001-09-17T23:59:59.000Z

72

RHIC and LHC jet suppression in non-central collisions  

E-Print Network [OSTI]

Understanding properties of QCD matter created in ultra-relativistic heavy-ion collisions is a major goal of RHIC and LHC experiments. An excellent tool to study these properties is jet suppression of light and heavy flavor observables. Utilizing this tool requires accurate suppression predictions for different experiments, probes and experimental conditions, and their unbiased comparison with experimental data. With this goal, we here extend our dynamical energy loss formalism towards generating predictions for non-central collisions; the formalism takes into account both radiative and collisional energy loss, dynamical (as opposed to static) scattering centers, finite magnetic mass, running coupling and uses no free parameters in comparison with experimental data. Specifically, we here generate predictions for all available centrality ranges, for both LHC and RHIC experiments, and for four different probes (charged hadrons, neutral pions, D mesons and non-prompt $J/\\psi$). We obtain a very good agreement with all available non-central data, and also generate predictions for suppression measurements that will soon become available. Finally, we discuss implications of the obtained good agreement with experimental data with different medium models that are currently considered.

Magdalena Djordjevic; Marko Djordjevic; Bojana Blagojevic

2014-06-25T23:59:59.000Z

73

Active vibration suppression of a exible structure using smart material and a modular control patch  

E-Print Network [OSTI]

Active vibration suppression of a ¯exible structure using smart material and a modular control of vibration suppression of a ¯exible structure using smart materials and a miniaturized digital controller demonstrated the capacity of smart material being used as sensors and actuators for vibration suppression

74

Suppression of Quantum Scattering in Strongly Confined Systems  

SciTech Connect (OSTI)

We demonstrate that scattering of particles strongly interacting in three dimensions (3D) can be suppressed at low energies in a quasi-one-dimensional (1D) confinement. The underlying mechanism is the interference of the s- and p-wave scattering contributions with large s- and p-wave 3D scattering lengths being a necessary prerequisite. This low-dimensional quantum scattering effect might be useful in 'interacting' quasi-1D ultracold atomic gases, guided atom interferometry, and impurity scattering in strongly confined quantum wire-based electronic devices.

Kim, J. I. [Departamento de Pesquisas, Altanova, R. Silva Teles 712, CEP 03026-000, Bras, Sa(tilde sign)o Paulo, SP, Brasil (Brazil); Melezhik, V. S. [Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow Region 141980 (Russian Federation); Schmelcher, P. [Physikalisches Institut, Universitaet Heidelberg, Philosophenweg 12, 69120 Heidelberg (Germany); Theoretische Chemie, Institut fuer Physikalische Chemie, Universitaet Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg (Germany)

2006-11-10T23:59:59.000Z

75

Strangeness Suppression of qq? Creation Observed in Exclusive Reactions  

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

We measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: ?K+, p?0, and n?+, with the CLAS detector at Jefferson Lab. Using a simple model of quark hadronization, we extract qq¯ creation probabilities for the first time in exclusive two-body production, in which only a single qq¯ pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to nonstrange pairs, similar to that seen in high-energy production.

Mestayer, Mac [JLAB; Park, Kijun; Adhikari, Krishna; Aghasyan, Mher; Anefalos Pereira, Sergio; Ball, Jacques; Battaglieri, Marco; Batourine, V; Bedlinskiy, Ivan; Biselli, Angela; Boyarinov, Sergey; Briscoe, William; Brooks, William; Burkert, Volker; Carman, Daniel; Celentano, Andrea; Chandavar, Shloka; Charles, Gabriel; Colaneri, Luca; Cole, Philip; Contalbrigo, Marco; Cortes, Olga; Crede, Volker; D'Angelo, Annalisa; Dashyan, Natalya; De Vita, Raffaella; Deur, Alexandre; Djalali, Chaden; Doughty, David; Dupre, Raphael; El Alaoui, Ahmed; El Fassi, Lamiaa; Elouadrhiri, Latifa; Eugenio, Paul; Fedotov, Gleb; Fleming, Jamie; Forest, Tony; Garillon, Brice; Garcon, Michel; Ghandilyan, Yeranuhi; Gilfoyle, Gerard; Giovanetti, Kevin; Girod-Gard, Francois-Xavier; Goetz, John; Golovach, Evgeny; Gothe, Ralf; Griffioen, Keith; Guegan, Baptiste; Guidal, Michel; Hakobyan, Hayk; Hanretty, Charles; Hattawy, Mohammad; Holtrop, Maurik; Hughes, Simon; Hyde, Charles; Ilieva, Yordanka; Ireland, David; Jiang, Hao; Jo, Hyon-Suk; Joo, Kyungseon; Keller, Dustin; Khandaker, Mahbubul; Kim, Andrey; Kim, Wooyoung; Koirala, Suman; Kubarovsky, Valery; Kuleshov, Sergey; Lenisa, Paolo; Levine, William; Livingston, Ken; Lu, Haiyun; MacGregor, Ian; Mayer, Michael; McKinnon, Bryan; Meyer, Curtis; Mirazita, Marco; Mokeev, Viktor; Montgomery, Rachel; Moody, Cristina; Moutarde, Herve; Movsisyan, Aram; Munoz Camacho, Carlos; Nadel-Turonski, Pawel; Niccolai, Silvia; Niculescu, Gabriel; Niculescu, Maria; Osipenko, Mikhail; Ostrovidov, Alexander; Pappalardo, Luciano; Paremuzyan, Rafayel; Peng, Peng; Phelps, William; Pisano, Silvia; Pogorelko, Oleg; Pozdniakov, Serguei; Price, John; Protopopescu, Dan; Puckett, Andrew; Raue, Brian; Rimal, Dipak; Ripani, Marco; Rizzo, Alessandro; Rosner, Guenther; Roy, Priyashree; Sabatie, Franck; Saini, Mukesh; Schott, Diane; Schumacher, Reinhard; Simonyan, Ani; Sokhan, Daria; Strauch, Steffen; Sytnik, Valeriy; Tang, Wei; Tian, Ye; Ungaro, Maurizio; Vernarsky, Brian; Vlasov, Alexander; Voskanyan, Hakob; Voutier, Eric; Walford, Natalie; Watts, Daniel; Wei, Xiangdong; Weinstein, Lawrence; Wood, Michael; Zachariou, Nicholas; Zhang, Jixie; Zhao, Zhiwen; Zonta, Irene

2014-10-01T23:59:59.000Z

76

Error suppression in Hamiltonian based quantum computation using energy penalties  

E-Print Network [OSTI]

We consider the use of quantum error detecting codes, together with energy penalties against leaving the codespace, as a method for suppressing environmentally induced errors in Hamiltonian based quantum computation. This method was introduced in [1] in the context of quantum adiabatic computation, but we consider it more generally. Specifically, we consider a computational Hamiltonian, which has been encoded using the logical qubits of a single-qubit error detecting code, coupled to an environment of qubits by interaction terms that act one-locally on the system. Energy penalty terms are added that penalize states outside of the codespace. We prove that in the limit of infinitely large penalties, one-local errors are completely suppressed, and we derive some bounds for the finite penalty case. Our proof technique involves exact integration of the Schrodinger equation, making no use of master equations or their assumptions. We perform long time numerical simulations on a small (one logical qubit) computational system coupled to an environment and the results suggest that the energy penalty method achieves even greater protection than our bounds indicate.

Adam D. Bookatz; Edward Farhi; Leo Zhou

2014-07-06T23:59:59.000Z

77

Hydrodynamical model for $J/?$ suppression and elliptic flow  

E-Print Network [OSTI]

In a hydrodynamic model, we have studied $J/\\psi$ suppression and elliptic flow in Au+Au collisions at RHIC energy $\\sqrt{s}$=200 GeV. At the initial time, $J/\\psi$'s are randomly distributed in the fluid. As the fluid evolve in time, the free streaming $J/\\psi$'s are dissolved if the local fluid temperature exceeds a melting temperature $T_{J/\\psi}$. Sequential melting of charmonium states ($\\chi_c$, $\\psi\\prime$ and $J/\\psi$), with melting temperatures $T_{\\chi_c}=T_{\\psi\\prime} \\approx 1.2T_c$, $T_{J/\\psi} \\approx2T_c$ and feed-down fraction $F\\approx 0.3$, is consistent with the PHENIX data on $J/\\psi$ suppression and near zero elliptic flow for $J/\\psi$'s. It is also shown that the model will require substantial regeneration of charmoniums, if the charmonium states dissolve at temperature close to the critical temperature, $T_{\\chi_c}=T_{\\psi\\prime} \\leq T_c$, $T_{J/\\psi}\\approx1.2T_c$. The regenerated charmoniums will have positive elliptic flow.

A. K. Chaudhuri

2009-10-06T23:59:59.000Z

78

Nuclear absorption and anomalous $J/?$ suppression in Pb+Pb collisions  

E-Print Network [OSTI]

We discuss $J/\\psi$ suppression in a QCD based nuclear absorption model. Centrality dependence of $J/\\psi$ suppression in S+U and in Pb+Pb collisions are explained in the model. However, the model fails to explain the centrality dependence of $\\psi\\prime$ suppression. $\\psi\\prime$ suppression in S+U or in Pb+Pb collisions require additional suppression. Additional suppression of $\\psi\\prime$, due to hadronic comovers or due to QGP formation could not be distinguished in Pb+Pb collisions. We then show that the centrality dependence of the ratio, $\\psi\\prime$ over $J/\\psi$, could possibly distinguish two scenario (e.g. QGP or hadronic comover) at RHIC energy.

A. K. Chaudhuri

2003-07-31T23:59:59.000Z

79

Pressure suppression containment system for boiling water reactor  

DOE Patents [OSTI]

A system for suppressing the pressure inside the containment of a BWR following a postulated accident. A piping subsystem is provided which features a main process pipe that communicates the wetwell airspace to a connection point downstream of the guard charcoal bed in an offgas system and upstream of the main bank of delay charcoal beds which give extensive holdup to offgases. The main process pipe is fitted with both inboard and outboard containment isolation valves. Also incorporated in the main process pipe is a low-differential-pressure rupture disk which prevents any gas outflow in this piping whatsoever until or unless rupture occurs by virtue of pressure inside this main process pipe on the wetwell airspace side of the disk exceeding the design opening (rupture) pressure differential. The charcoal holds up the radioactive species in the noncondensable gas from the wetwell plenum by adsorption, allowing time for radioactive decay before the gas is vented to the environs.

Gluntz, Douglas M. (San Jose, CA); Nesbitt, Loyd B. (San Jose, CA)

1997-01-01T23:59:59.000Z

80

Pressure suppression containment system for boiling water reactor  

DOE Patents [OSTI]

A system is disclosed for suppressing the pressure inside the containment of a BWR following a postulated accident. A piping subsystem is provided which features a main process pipe that communicates the wetwell airspace to a connection point downstream of the guard charcoal bed in an offgas system and upstream of the main bank of delay charcoal beds which give extensive holdup to offgases. The main process pipe is fitted with both inboard and outboard containment isolation valves. Also incorporated in the main process pipe is a low-differential-pressure rupture disk which prevents any gas outflow in this piping whatsoever until or unless rupture occurs by virtue of pressure inside this main process pipe on the wetwell airspace side of the disk exceeding the design opening (rupture) pressure differential. The charcoal holds up the radioactive species in the noncondensable gas from the wetwell plenum by adsorption, allowing time for radioactive decay before the gas is vented to the environs. 3 figs.

Gluntz, D.M.; Nesbitt, L.B.

1997-01-21T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Method and apparatus for suppressing waves in a borehole  

DOE Patents [OSTI]

Methods and apparatus for suppression of wave energy within a fluid-filled borehole using a low pressure acoustic barrier. In one embodiment, a flexible diaphragm type device is configured as an open bottomed tubular structure for disposition in a borehole to be filled with a gas to create a barrier to wave energy, including tube waves. In another embodiment, an expandable umbrella type device is used to define a chamber in which a gas is disposed. In yet another embodiment, a reverse acting bladder type device is suspended in the borehole. Due to its reverse acting properties, the bladder expands when internal pressure is reduced, and the reverse acting bladder device extends across the borehole to provide a low pressure wave energy barrier.

West, Phillip B.

2005-10-04T23:59:59.000Z

82

E-Print Network 3.0 - al10 suppresses invasion Sample Search...  

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

aka "Escape from... in their native range are suppressed by natural enemies Alien species are immigrants to a new area ... Source: Nowak, Robert S. - Department of...

83

E-Print Network 3.0 - active vibration suppression Sample Search...  

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

search results for: active vibration suppression Page: << < 1 2 3 4 5 > >> 1 Control Engineering Practice 12 (2004) 987988 Emerging technologies for active noise and vibration...

84

E-Print Network 3.0 - active flutter suppression Sample Search...  

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

Dame Collection: Engineering 9 JOURNAL OF ENGINEERING MECHANICS JANUARY 2000 17 AERODYNAMIC COUPLING EFFECTS ON FLUTTER AND Summary: ). Design for active flutter suppression...

85

E-Print Network 3.0 - acid suppression trial Sample Search Results  

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

suppression index for ... Source: Curran, Tim - Department of Psychology, University of Colorado at Boulder Collection: Biology and Medicine 40 DEAFFERENTATION AFFECTS SHORT-TERM...

86

E-Print Network 3.0 - active compton-suppressed labr3ce Sample...  

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

The prime national facility for nuclear structure research Summary: for experiments at ATLAS. It consists of 110 Compton-suppressed Ge detectors used to detect gamma rays...

87

E-Print Network 3.0 - amphetamine-mediated appetite suppression...  

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

from motivated appetitive behavior. An incentive attribution hypothesisthat can... " (Stricker & Zigmond, 1986, p. 689). The same suppression of response activation may apply even...

88

acid suppresses uv-b-induced: Topics by E-print Network  

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

Topic Index 1 Suppression of rice methane emission by sulfate deposition in simulated acid rain Geosciences Websites Summary: from rice agriculture. Emissions from rice plants...

89

Study on higher harmonic suppression using edge filter and polished Si wafer  

SciTech Connect (OSTI)

Higher harmonics contamination is a severe problem in synchrotron beamlines where grating monochromators are used. In these beamlines, absorption edge filters and critical angle mirrors are used to suppress the harmonic contaminations. In the present study, carried out using Indus-1 reflectivity beamline, a harmonic suppression characteristic of Al edge filter and polished silicon wafer are determined. It is found that the Al filter suppresses higher harmonics in 2–7% range whereas the polished silicon wafer can suppress the higher harmonics below 1%. The results of comparative study are discussed.

Gupta, R. K., E-mail: rkg@rrcat.gov.in; Singh, Amol, E-mail: rkg@rrcat.gov.in; Modi, Mohammed H., E-mail: rkg@rrcat.gov.in; Lodha, G. S., E-mail: rkg@rrcat.gov.in [X-ray Optics Section, ISU Division, Raja Ramanna Centre for Advanced Technology, Indore-452013 (India)

2014-04-24T23:59:59.000Z

90

Quantum Lubrication: Suppression of Friction in a First Principle Four Stroke Heat Engine  

E-Print Network [OSTI]

A quantum model of a heat engine resembling the Otto cycle is employed to explore strategies to suppress frictional losses. These losses are caused by the inability of the engine's working medium to follow adiabatically the change in the Hamiltonian during the expansion and compression stages. By adding external noise to the engine, frictional losses can be suppressed.

Tova Feldmann; Ronnie Kosloff

2005-09-19T23:59:59.000Z

91

Precipitation suppression by anthropogenic air pollution: major loss of water resources where we need them most  

E-Print Network [OSTI]

Precipitation suppression by anthropogenic air pollution: major loss of water resources where we inferences of air pollution suppressing precipitation lead us to investigate historical climate records precipitation, decreases with time in the polluted regions and remains unchanged where no pollution sources were

Daniel, Rosenfeld

92

FRACTAL SHAPED MICROSTRIP COUPLED LINE BAND PASS FILTERS FOR SUPPRESSION OF 2ND  

E-Print Network [OSTI]

1 FRACTAL SHAPED MICROSTRIP COUPLED LINE BAND PASS FILTERS FOR SUPPRESSION OF 2ND HARMONIC Il Kwon Koch fractal curves are proposed for the first time. These filters are fabricated on Liquid Crystal, the 2nd harmonic of fractal filters can be significantly suppressed through the use of fractal shapes

Tentzeris, Manos

93

A nested invocation suppression mechanism for active replication fault-tolerant CORBA  

E-Print Network [OSTI]

1 A nested invocation suppression mechanism for active replication fault-tolerant CORBA Deron Liang. The redundant nested invocation (RNI) problem arises when servers in a replicated group issues nested a mechanism to perform auto-suppression of redundant nested invocation in an active replication fault

Chen, Sheng-Wei

94

Kalispel Non-Native Fish Suppression Project 2007 Annual Report.  

SciTech Connect (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

95

Quadrature mixture LO suppression via DSW DAC noise dither  

DOE Patents [OSTI]

A Quadrature Error Corrected Digital Waveform Synthesizer (QECDWS) employs frequency dependent phase error corrections to, in effect, pre-distort the phase characteristic of the chirp to compensate for the frequency dependent phase nonlinearity of the RF and microwave subsystem. In addition, the QECDWS can employ frequency dependent correction vectors to the quadrature amplitude and phase of the synthesized output. The quadrature corrections cancel the radars' quadrature upconverter (mixer) errors to null the unwanted spectral image. A result is the direct generation of an RF waveform, which has a theoretical chirp bandwidth equal to the QECDWS clock frequency (1 to 1.2 GHz) with the high Spurious Free Dynamic Range (SFDR) necessary for high dynamic range radar systems such as SAR. To correct for the problematic upconverter local oscillator (LO) leakage, precision DC offsets can be applied over the chirped pulse using a pseudo-random noise dither. The present dither technique can effectively produce a quadrature DC bias which has the precision required to adequately suppress the LO leakage. A calibration technique can be employed to calculate both the quadrature correction vectors and the LO-nulling DC offsets using the radar built-in test capability.

Dubbert, Dale F. (Cedar Crest, NM); Dudley, Peter A. (Albuquerque, NM)

2007-08-21T23:59:59.000Z

96

Feasibility study of a fission-suppressed tokamak fusion breeder  

SciTech Connect (OSTI)

The preliminary conceptual design of a tokamak fissile fuel producer is described. The blanket technology is based on the fission suppressed breeding concept where neutron multiplication occurs in a bed of 2 cm diameter beryllium pebbles which are cooled by helium at 50 atmospheres pressure. Uranium-233 is bred in thorium metal fuel elements which are in the form of snap rings attached to each beryllium pebble. Tritium is bred in lithium bearing material contained in tubes immersed in the pebble bed and is recovered by a purge flow of helium. The neutron wall load is 3 MW/m/sup 2/ and the blanket material is ferritic steel. The net fissile breeding ratio is 0.54 +- 30% per fusion reaction. This results in the production of 4900 kg of /sup 233/U per year from 3000 MW of fusion power. This quantity of fuel will provide makeup fuel for about 12 LWRs of equal thermal power or about 18 1 GW/sub e/ LWRs. The calculated cost of the produced uranium-233 is between $23/g and $53/g or equivalent to $10/kg to $90/kg of U/sub 3/O/sub 8/ depending on government financing or utility financing assumptions. Additional topics discussed in the report include the tokamak operating mode (both steady state and long pulse considered), the design and breeding implications of using a poloidal divertor for impurity control, reactor safety, the choice of a tritium breeder, and fuel management.

Moir, R.W.; Lee, J.D.; Neef, W.S.; Berwald, D.H.; Garner, J.K.; Whitley, R.H.; Ghoniem, N.; Wong, C.P.C.; Maya, I.; Schultz, K.R.

1984-12-01T23:59:59.000Z

97

Transverse energy dependence of J/Psi suppression in Au+Au collisions at RHIC energy  

E-Print Network [OSTI]

Prediction for transverse energy dependence of $J/\\psi$ to Drell-Yan ratio in Au+Au collisions at RHIC energy was obtained in a model which assume 100% absorption of $J/\\psi$ above a threshold density. The threshold density was obtained by fitting the NA50 data on $J/\\psi$ suppression in Pb+Pb collisions at SPS energy. At RHIC energy, hard processes may be important. Prediction of $J/\\psi$ suppression with and without hard processes were obtained. With hard processes included, $J/\\psi$'s are strongly suppressed.

A. K. Chaudhuri

2001-12-18T23:59:59.000Z

98

Fusion Technologies for Tritium-Suppressed D-D Fusion White Paper prepared for FESAC Materials Science Subcommittee  

E-Print Network [OSTI]

1 Fusion Technologies for Tritium-Suppressed D-D Fusion White Paper prepared for FESAC Materials for tritium-suppressed D-D fusion and the understanding of the turbulent pinch in magnetically confined plasma pathway. Tritium- suppressed D-D fusion eliminates the need to breed fuel from lithium, reduces the damage

99

Wideband phased array antennas and compact, harmonic-suppressed microstrip filters  

E-Print Network [OSTI]

. Since the electromagnetic spectrum is limited and has to be shared, interference is getting serious as more and more wireless applications emerge. Filters are key components to prevent harmonic interference. The harmonic signals can be suppressed...

Tu, Wen-Hua

2009-05-15T23:59:59.000Z

100

Microbial studies of compost: bacterial identification, and their potential for turfgrass pathogen suppression  

E-Print Network [OSTI]

Microbial studies of compost: bacterial identification, and their potential for turfgrass pathogen; accepted 17 April 2002 Keywords: Bacteria, compost, biocontrol disease suppression, grey snow mould Composting is the degradation of organic materials through the activities of diverse microorganisms

Boland, Greg J.

Note: This page contains sample records for the topic "argus halon suppression" 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.


101

The role of E2F4 in the growth suppressive properties of the retinoblastoma protein  

E-Print Network [OSTI]

The growth suppressive functions of the retinoblastoma protein (pRB), the first identified tumor suppressor, are considerably mediated through the repression of the E2F transcription factors. Functional inactivation of ...

Lee, Eunice Y. (Eunice Yoon)

2005-01-01T23:59:59.000Z

102

SUPPRESSED AMBIGUITY IN RANGE BY PHASE-CODED WAVEFORMS Sune R.J. Axelsson  

E-Print Network [OSTI]

SUPPRESSED AMBIGUITY IN RANGE BY PHASE-CODED WAVEFORMS Sune R.J. Axelsson Swedish Defence Research Email: Sune.Axelsson@dynamics. saab.se Abstract- In Doppler radar for surveillance and Remote Sensing

Ha, Dong S.

103

Polyethylene glycol, unique among laxatives, suppresses aberrant crypt foci, by elimination of cells  

E-Print Network [OSTI]

Polyethylene glycol, unique among laxatives, suppresses aberrant crypt foci, by elimination Corpet Abstract Background Polyethylene glycol (PEG), an osmotic laxative, is a very ; Polyethylene Glycols ; pharmacology ; therapeutic use ; Precancerous Conditions ; chemically induced

Paris-Sud XI, Université de

104

Feedback schemes for radiation damping suppression in NMR: a control-theoretical perspective  

E-Print Network [OSTI]

In NMR spectroscopy, the collective measurement is weakly invasive and its back-action is called radiation damping. The aim of this paper is to provide a control-theoretical analysis of the problem of suppressing this ...

Altafini, C.

105

Feedback and its Feedback Effect on Feedback: Photoionization Suppression and its Impact on Galactic Outflows  

E-Print Network [OSTI]

We show that radiative feedback due to reionization has a pronounced effect on the extent of mechanical feedback due to galactic outflows. The photoionization of the Intergalactic Medium (IGM) suppresses low-mass galaxy formation by photoheating the gas and limiting atomic line cooling. The number of low-mass galaxies is central for the enrichment of the IGM as these objects have the capacity to enrich a significant fraction (by volume) of the Universe. We use a modified version of our galactic outflow model, combined with a simple criterion for suppression, to investigate the potential impact upon the IGM. We find that this suppression strongly reduces the enrichment of the IGM and is sensitive to the reionization history. We also investigate the contribution of halos of different masses with varying degrees of suppression.

Matthew M. Pieri; Hugo Martel

2007-05-02T23:59:59.000Z

106

Psi(2S) Suppression in p-Pb Collisions and Mixed Hybrid Theory  

E-Print Network [OSTI]

We use our mixed hybrid model for the $\\Psi(2S)$ state to estimate $\\Psi(2S)$ to $J/\\Psi(1S)$ suppression and compare to recent experiments using $p-Pb$ collisions .

Leonard S. Kisslinger

2014-12-05T23:59:59.000Z

107

Vibration suppression of laminated composite plates using embedded smart material layers  

E-Print Network [OSTI]

In this study, a complete theoretical formulation of laminated composite plates with integrated smart material layers that serve as sensors and/or actuators is presented for the vibration suppression of laminated composite plates. The third...

Krishnan, Sivasubramaniam

2000-01-01T23:59:59.000Z

108

Beam dynamics and wakefield suppression in interleaved damped and detuned structures for CLIC  

E-Print Network [OSTI]

Acceleration of multiple bunches of charged particles in the main linacs of the Compact Linear Collider (CLIC) with high accelerating fields provides two major challenges: firstly, to ensure the surface electromagnetic fields do not cause electrical breakdown and subsequent surface damage, and secondly, to ensure the beam-excited wakefields are sufficiently suppressed to avoid appreciable emittance dilution. In the baseline design for CLIC, heavy wakefield suppression is used (Q ~ 10) [1] and this ensures the beam quality is well-preserved [2]. Here we discuss an alternative means to suppress the wakefield which relies on strong detuning of the cell dipole frequencies, together with moderate damping, effected by manifolds which are slot-coupled to each accelerating cell. This damped and detuned wakefield suppression scheme is based on the methodology developed for the Japanese Linear Collider/Next Linear Collider (JLC/NLC) [3]. Here we track the multi-bunch beam down the complete collider, u...

D'Elia, A; Khan, V F; Jones, R M; Latina, A; Nesmiyan, I; Riddone, G

2013-01-01T23:59:59.000Z

109

Speech-induced suppression of evoked auditory fields in children who stutter Deryk S. Beal a,  

E-Print Network [OSTI]

Speech-induced suppression of evoked auditory fields in children who stutter Deryk S. Beal a neuroanatomical (Beal et al., 2007; Foundas et al., 2001, 2004; Jäncke et al., 2004; Kell et al., 2009; Sommer et

110

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/or parasitic oscillation modes in a 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 to a predetermined electromagnetic absorbing material arranged adjacent to the entire outer surface of the peripheral edges of the roughened laser gain media, ASE, parasitic oscillation modes and/or residual pump energy 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)

2011-02-22T23:59:59.000Z

111

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

112

E-Print Network 3.0 - aircraft halon bottles Sample Search Results  

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

on Concepts and Cognition Collection: Multidisciplinary Databases and Resources 17 Refrigerant Compliance Updated: August 6, 2008 Summary: of refrigerants. 3. Subpart H -...

113

$J/?$ suppression in the threshold model at RHIC and LHC energy  

E-Print Network [OSTI]

In the QGP based threshold model \\cite{Blaizot:2000ev,Blaizot:1996nq}, in addition to the normal nuclear absorption, $J/\\psi$'s are subjected to an 'anomalous' suppression such that above a threshold density $n_{J/\\psi}$, all the $J/\\psi$'s are melted. In the threshold model we have analysed the recent PHENIX data on the centrality dependence of $J/\\psi$ suppression in Au+Au collisions at RHIC. Feedback from decay of the state $\\chi$ is accounted for. $J/\\psi$'s are anomalously suppressed above a threshold density, $n_{J/\\psi}=3.57\\pm 0.17$ $fm^{-2}$. Threshold density for anomalous suppression of the state $\\chi$ is uncertain to a large extent, $n_\\chi=0.32 \\pm 0.32$ $fm^{-2}$. The fraction $F$ of the state $\\chi$ can not be determined unambiguously, depending on the nuclear absorption, it can vary from 20% to 40%. We have also predicted for the suppression in Pb+Pb collisions at LHC energy. In central Pb+Pb collisions, $J/\\psi$'s are suppressed by a factor of 3-4. Suppression pattern is rather similar to that in Au+Au collisions, if not slighty less in central collisions. Using the PHENIX data on the participant number dependence of the Bjorken energy density, we have also estimated the QGP formation time. For critical temperature $T_c$=192 MeV, estimated QGP formation time ranges between 0.07-0.09 fm/c.

A. K. Chaudhuri

2007-11-14T23:59:59.000Z

114

GNOSIS: THE FIRST INSTRUMENT TO USE FIBER BRAGG GRATINGS FOR OH SUPPRESSION  

SciTech Connect (OSTI)

The near-infrared is an important part of the spectrum in astronomy, especially in cosmology because the light from objects in the early universe is redshifted to these wavelengths. However, deep near-infrared observations are extremely difficult to make from ground-based telescopes due to the bright background from the atmosphere. Nearly all of this background comes from the bright and narrow emission lines of atmospheric hydroxyl (OH) molecules. The atmospheric background cannot be easily removed from data because the brightness fluctuates unpredictably on short timescales. The sensitivity of ground-based optical astronomy far exceeds that of near-infrared astronomy because of this long-standing problem. GNOSIS is a prototype astrophotonic instrument that utilizes 'OH suppression fibers' consisting of fiber Bragg gratings and photonic lanterns to suppress the 103 brightest atmospheric emission doublets between 1.47 and 1.7 {mu}m. GNOSIS was commissioned at the 3.9 m Anglo-Australian Telescope with the IRIS2 spectrograph to demonstrate the potential of OH suppression fibers, but may be potentially used with any telescope and spectrograph combination. Unlike previous atmospheric suppression techniques GNOSIS suppresses the lines before dispersion and in a manner that depends purely on wavelength. We present the instrument design and report the results of laboratory and on-sky tests from commissioning. While these tests demonstrated high throughput ( Almost-Equal-To 60%) and excellent suppression of the skylines by the OH suppression fibers, surprisingly GNOSIS produced no significant reduction in the interline background and the sensitivity of GNOSIS+IRIS2 is about the same as IRIS2. It is unclear whether the lack of reduction in the interline background is due to physical sources or systematic errors as the observations are detector noise dominated. OH suppression fibers could potentially impact ground-based astronomy at the level of adaptive optics or greater. However, until a clear reduction in the interline background and the corresponding increasing in sensitivity is demonstrated optimized OH suppression fibers paired with a fiber-fed spectrograph will at least provide a real benefit at low resolving powers.

Trinh, Christopher Q.; Ellis, Simon C.; Bland-Hawthorn, Joss; Bryant, Julia; O'Byrne, John [Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006 (Australia); Lawrence, Jon S.; Horton, Anthony J.; Shortridge, Keith; Case, Scott; Colless, Matthew; Gers, Luke; Lee, Steve; Miziarski, Stan [Australian Astronomical Observatory, 105 Delhi Road, North Ryde, P.O. Box 915, NSW 1670 (Australia); Leon-Saval, Sergio G. [Institute of Photonics and Optical Science, School of Physics, University of Sydney, NSW 2006 (Australia); Couch, Warrick; Glazebrook, Karl [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, VIC 3122 (Australia); Freeman, Kenneth [Research School of Astronomy and Astrophysics, Australian National University, Weston Creek, ACT 2611 (Australia); Loehmannsroeben, Hans-Gerd [innoFSPEC-Institut fuer Chemie/Physikalische Chemie, Universitaet Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam-Golm (Germany); Haynes, Roger; Roth, Martin M., E-mail: c.trinh@physics.usyd.edu.au [innoFSPEC-Leibniz-Institut fuer Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam (Germany); and others

2013-02-01T23:59:59.000Z

115

Can $J/?$ suppression and $p_T$ broadening signal the deconfinement transition at RHIC?  

E-Print Network [OSTI]

We have analyzed the latest NA50 data on $J/\\psi$ suppression in Pb+Pb collisions at CERN SPS. It is shown that a QCD based nuclear absorption model, where $J/\\psi$'s are absorbed in nuclear medium could explain the latest NA50 data on the centrality dependence of the $J/\\psi$ over Drell-Yan ratio. The model also explains the NA50 data on $J/\\psi$ over minimum bias ratio and the $p_T$ broadening of $J/\\psi$'s. A QGP based threshold model where all the $J/\\psi$'s are suppressed above a threshold density, also explains the data sets with smeared threshold density. Even at RHIC energy, centrality dependence of $J/\\psi$ suppression or $p_T$ broadening could not distinguish between the two models.

A. K. Chaudhuri

2005-06-24T23:59:59.000Z

116

$J/?$ suppression in Pb+Pb collisions and $p_T$ broadening  

E-Print Network [OSTI]

We have analysed the NA50 data, on the centrality dependence of $p_T$ broadening of $J/\\psi$'s, in Pb+Pb collisions, at the CERN-SPS. The data were analysed in a QCD based model, where $J/\\psi$'s are suppressed in 'nuclear' medium. Without any free parameter, the model could explain the NA50 $p_T$ broadening data. The data were also analysed in a QGP based threshold model, where $J/\\psi$ suppression is 100% above a critical density. The QGP based model could not explain the NA50 $p_T$ broadening data. We have also predicted the centrality dependence of $J/\\psi$ suppression and $p_T$ broadening at RHIC energy. Both the models, the QGP based threshold model and the QCD based nuclear absorption model, predict $p_T$ broadening very close to each other.

A. K. Chaudhuri

2003-04-10T23:59:59.000Z

117

Tracking multiple generation and suppression of secondary electrons on periodic triangular surface  

SciTech Connect (OSTI)

To research the dynamic course of multipactor suppression on the periodically patterned surface, tens of electron collision processes are tracked by numerical calculation. The influences of microwave frequency, amplitude of RF electric field, slope angle, the local field enhancement, and the tilted incident electric field on the multipactor suppression are studied by tracking multi-generation electrons' trajectories, hopping and flight time, collision energy, and secondary emission yield. Meanwhile, the dynamic processes of secondary electrons on the periodic surface are analyzed by particle-in-cell (PIC) simulation. The PIC results are consistent with the analytical results in which the electrons fly reciprocatingly between the slopes and impact on the slopes; the methods of increasing the slope angle, enlarging the RF field, and lowering the frequency in a certain range are helpful to enhance the multipactor suppression steadily and persistently.

Li, S.; Wang, J. G.; Zhu, M.; Peng, J. C.; Xie, J. L.; Wu, X. L.; Guo, L. T. [Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China)] [Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China); Chang, C.; Xiong, Z. F. [Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China) [Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China); Department of Engineering Physics, Tsinghua University, Beijing 10084 (China)

2013-12-15T23:59:59.000Z

118

Parametric Instability in Long Optical Cavities and Suppression by Dynamic Transverse Mode Frequency Modulation  

E-Print Network [OSTI]

Three mode parametric instability has been predicted in Advanced gravitational wave detectors. Here we present the first observation of this phenomenon in a large scale suspended optical cavity designed to be comparable to those of advanced gravitational wave detectors. Our results show that previous modelling assumptions that transverse optical modes are stable in frequency except for frequency drifts on a thermal deformation time scale is unlikely to be valid for suspended mass optical cavities. We demonstrate that mirror figure errors cause a dependence of transverse mode offset frequency on spot position. Combined with low frequency residual motion of suspended mirrors, this leads to transverse mode frequency modulation which suppresses the effective parametric gain. We show that this gain suppression mechanism can be enhanced by laser spot dithering or fast thermal modulation. Using Advanced LIGO test mass data and thermal modelling we show that gain suppression factors of 10-20 could be achieved for ind...

Zhao, Chunnong; Fang, Qi; Blair, Carl; Qin, Jiayi; Blair, David; Degallaix, Jerome; Yamamoto, Hiroaki

2015-01-01T23:59:59.000Z

119

Resonant conversions of QCD axions into hidden axions and suppressed isocurvature perturbations  

E-Print Network [OSTI]

We study in detail MSW-like resonant conversions of QCD axions into hidden axions, including cases where the adiabaticity condition is only marginally satisfied, and where anharmonic effects are non-negligible. When the resonant conversion is efficient, the QCD axion abundance is suppressed by the hidden and QCD axion mass ratio. We find that, when the resonant conversion is incomplete due to a weak violation of the adiabaticity, the CDM isocurvature perturbations can be significantly suppressed, while non-Gaussianity of the isocurvature perturbations generically remain unsuppressed. The isocurvature bounds on the inflation scale can therefore be relaxed by the partial resonant conversion of the QCD axions into hidden axions.

Naoya Kitajima; Fuminobu Takahashi

2014-11-17T23:59:59.000Z

120

Longitudinal pulse shaping for the suppression of coherent synchrotron radiation-induced emittance growth  

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

The damaging effect of coherent synchrotron radiation (CSR) on the emittance and energy spread of high-energy beams in accelerator light sources can significantly constrain the machine design and performance. We propose a mitigation approach in which the dynamical effect of the longitudinal component of CSR is suppressed by appropriately preparing the initial longitudinal current profile of the beam. In a chicane, a linear theory for the mechanism of CSR-induced emittance growth is used to demonstrate how this procedure can produce a beam whose core experiences suppressed transverse emittance growth. The dynamics of such a beam is illustrated for the Berlin-Zeuthen CSR benchmark chicane.

Mitchell, Chad; Qiang, Ji; Emma, Paul

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Suppression of 2 phase-slip due to hidden zero modes in one dimensional topological superconductors  

E-Print Network [OSTI]

Suppression of 2 phase-slip due to hidden zero modes in one dimensional topological superconductors-dimensional topological superconducting wires. These wires have been proposed as building blocks for topologically in decoherence. Phase slips in topological superconductors are peculiar for the reason that they occur

Yanikoglu, Berrin

122

Does Foundation Giving Stimulate or Suppress Private Giving? Evidence from Canadian  

E-Print Network [OSTI]

Does Foundation Giving Stimulate or Suppress Private Giving? Evidence from Canadian Charities Iryna Kryvoruchko McMaster University February 27, 2012 Iryna Kryvoruchko (McMaster) Foundation and Private Giving? charitable organizations as providers of public goods Iryna Kryvoruchko (McMaster) Foundation and Private

Saskatchewan, University of

123

Suppressed gross erosion of high-temperature lithium films under high-flux deuterium bombardment  

E-Print Network [OSTI]

P1-030 Suppressed gross erosion of high-temperature lithium films under high-flux deuterium) and thick (~500 m) lithium films under high-flux deuterium and neon plasma bombardment were studied. For Ne plasmas, Li erosion rates inferred from measurements of Li-I radiation are consistent

Princeton Plasma Physics Laboratory

124

Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm year  

E-Print Network [OSTI]

, such as temperature anomalies, on NEE and carbon sequestration of ecosystems at interannual timescales have beenLETTERS Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm year , Yiqi Luo5 & David S. Schimel6 Terrestrial ecosystems control carbon dioxide fluxes to and from

Cai, Long

125

First Observation of the Greisen-Zatsepin-Kuzmin Suppression R. U. Abbasi,1  

E-Print Network [OSTI]

] proposed an upper limit to the cosmic-ray energy spec- trum. Their predictions were based on the assumption standard deviations. HiRes' measurement of the flux of ultrahigh energy cosmic rays shows a sharp suppression at an energy of 6 1019 eV, consistent with the expected cutoff energy. We observe the ankle

126

Nuclear absorption and anomalous J/psi suppression in Pb+Pb collisions  

E-Print Network [OSTI]

We have studied the J/psi suppression in 158 GeV/c Pb+Pb collisions at CERN SPS. J/psi production is assumed to be a two step process, (i) formation of c bar{c} pair, which is accurately calculable in QCD and (ii) formation of J/psi meson from the c bar{c} pair, which can be conveniently parameterized. In a pA/AA collision, as the c bar{c} pair pass through the nuclear medium, it gains relative square momentum. As a result, some of the c bar{c} pairs can gain enough momentum to cross the threshold to become open charm meson, leading to suppression in pA/AA collisions. The model without any free parameter could describe the of NA50 data on centrality dependence of the ratio's; J/psi over Drell-Yan, J/psi over minimum bias and also the Drell-Yan over minimum bias. The model was used to predict J/psi suppression at RHIC energy. At RHIC energy, hard processes may be important. With hard processes included, J/psi's are strongly suppressed, in agreement with other model calculations. We also show that centrality dependence of J/psi over minimum bias ratio can be used to determine the fraction of hard processes in the collision.

A. K. Chaudhuri

2002-07-29T23:59:59.000Z

127

Is it possible to observe a suppressing of $?$-decay caused by an atomic substance - plasma transition ?  

E-Print Network [OSTI]

It is supposed that $\\beta$-decay can be slightly suppressed at an atomic substance - plasma transition under a plasma electron gas action. The estimation shows that this effect can give a relative difference of the decay amount on a level of $10^{-4}$.

B. V. Vasiliev

2006-04-24T23:59:59.000Z

128

Dynamical epidemic suppression using stochastic prediction and control Ira B. Schwartz  

E-Print Network [OSTI]

of stochastic dynamical sys- tems [13].) Other methods pulse the population without sam- pling for predictionDynamical epidemic suppression using stochastic prediction and control Ira B. Schwartz Plasma of stochastic processes with underlying deterministic structure. DOI: 10.1103/PhysRevE.70.046220 PACS number

Billings, Lora

129

Noise suppression and enhanced focusability in plasma Raman amplifier with multi-frequency pump  

E-Print Network [OSTI]

Noise suppression and enhanced focusability in plasma Raman amplifier with multi-frequency pump A. Fisch Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 and Department of Astrophysical Laser pulse compression­amplification through Raman backscattering in plasmas can be facilitated

130

Freckle suppression in directional solidification of binary and multicomponent alloys using magnetic fields  

E-Print Network [OSTI]

a Lorentz force that opposes the thermosolutal buoyancy force and can be used to control or suppress melt coupling the electromagnetic and fluid flow phenomena. The induced electric potential depends on the fluid heating effect is neglected in the energy equation because of the high electrical conductivity of most

Zabaras, Nicholas J.

131

LArGe - Active background suppression using argon scintillation for the GERDA $0\  

E-Print Network [OSTI]

LArGe is a GERDA low-background test facility to study novel background suppression methods in a low-background environment, for future application in the GERDA experiment. Similar to GERDA, LArGe operates bare germanium detectors submersed into liquid argon (1 m$^3$, 1.4 tons), which in addition is instrumented with photomultipliers to detect argon scintillation light. The scintillation signals are used in anti-coincidence with the germanium detectors to effectively suppress background events that deposit energy in the liquid argon. The background suppression efficiency was studied in combination with a pulse shape discrimination (PSD) technique using a BEGe detector for various sources, which represent characteristic backgrounds to GERDA. Suppression factors of a few times $10^3$ have been achieved. First background data of LArGe with a coaxial HPGe detector (without PSD) yield a background index of (0.12$-$4.6)$\\cdot 10^{-2}$ cts/(keV$\\cdot$kg$\\cdot$y) (90% C.L.), which is at the level of GERDA Phase I. Fu...

Agostini, M; Budjáš, D; Cattadori, C; Gangapshev, A; Gusev, K; Heisel, M; Junker, M; Klimenko, A; Lubashevskiy, A; Pelczar, K; Schönert, S; Smolnikov, A; Zuzel, G

2015-01-01T23:59:59.000Z

132

Department of Chemical and Mechanical Engineering Fall 2012 Wildfire Suppression Using Liquid Nitrogen  

E-Print Network [OSTI]

, these methods are not always enough to stop the fire from wreaking havoc; this is where Air Products comes inPENNSTATE Department of Chemical and Mechanical Engineering Fall 2012 Wildfire Suppression Using the team and sponsor decided that the product design which most effectively met customer needs was a ground

Demirel, Melik C.

133

Sensor-less Vibration Suppression and Scan Compensation for Piezoelectric Tube Nanopositioners  

E-Print Network [OSTI]

) (b) Fig. 2. (a) Charge driven tube scanner. (b) Voltage equivalent circuit. introduces two simple nonSensor-less Vibration Suppression and Scan Compensation for Piezoelectric Tube Nanopositioners-fabrication. Much research has proceeded with the aim of reducing hysteresis and vibration, the foremost problems

Fleming, Andrew J.

134

Fractal dimension based sand ripple suppression for mine hunting with sidescan sonar  

E-Print Network [OSTI]

mine hunting. Manual inspection of such data can be a time consuming task that requires significant1 Fractal dimension based sand ripple suppression for mine hunting with sidescan sonar J. D. B. Nelson and N. G. Kingsbury Abstract--Sand ripples present a difficult challenge to current mine hunting

Nelson, James

135

Search for color-suppressed B hadronic decay processes at the ?(4S) resonance  

E-Print Network [OSTI]

Using 3.1fb(-1) of data accumulated at the ?(4S) by the CLEO-II detector, corresponding to 3.3×10(6) BB¯ pairs, we have searched for the color-suppressed B hadronic decay processes B(0)?D(0)(D*(0))X(0), where X(0) is a ...

Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan

1998-05-01T23:59:59.000Z

136

Dynamical suppression of sea level rise along the Pacific coast of North America: Indications for imminent acceleration  

E-Print Network [OSTI]

Dynamical suppression of sea level rise along the Pacific coast of North America: Indications changes in global mean sea level (MSL) rise have important practical implications for shoreline and beach occurred after the mid1970s regime shift, can account for the suppression of regional sea level rise along

Bromirski, Peter D.

137

$?(2S)$, $?(3S)$ Suppression in p-Pb, Pb-Pb Collisions and Mixed Hybrid Theory  

E-Print Network [OSTI]

We use our mixed hybrid model for the $\\Psi(2S)$ state to estimate $\\Psi(2S)$ to $J/\\Psi(1S)$ suppression in p-Pb collisions, and the $\\Upsilon(3S)$ state to estimate $\\Upsilon(3S)$ to $\\Upsilon(1S)$ suppression in Pb-Pb collisions, and compare to recent experimental measurements.

Leonard S. Kisslinger

2015-03-03T23:59:59.000Z

138

Alternative approach for fire suppression of class A, B and C fires in gloveboxes  

SciTech Connect (OSTI)

Department of Energy (DOE) Orders and National Fire Protection Association (NFPA) Codes and Standards require fire suppression in gloveboxes. Several potential solutions have been and are currently being considered at Los Alamos National Laboratory (LANL). The objective is to provide reliable, minimally invasive, and seismically robust fire suppression capable of extinguishing Class A, B, and C fires; achieve compliance with DOE and NFPA requirements; and provide value-added improvements to fire safety in gloveboxes. This report provides a brief summary of current approaches and also documents the successful fire tests conducted to prove that one approach, specifically Fire Foe{trademark} tubes, is capable of achieving the requirement to provide reliable fire protection in gloveboxes in a cost-effective manner.

Rosenberger, Mark S [Los Alamos National Laboratory; Tsiagkouris, James A [Los Alamos National Laboratory

2011-02-10T23:59:59.000Z

139

Suppression of turbulence and subcritical fluctuations in differentially rotating gyrokinetic plasmas  

E-Print Network [OSTI]

Differential rotation is known to suppress linear instabilities in fusion plasmas. However, even in the absence of growing eigenmodes, subcritical fluctuations that grow transiently can lead to sustained turbulence. Here transient growth of electrostatic fluctuations driven by the parallel velocity gradient (PVG) and the ion temperature gradient (ITG) in the presence of a perpendicular ExB velocity shear is considered. The maximally simplified case of zero magnetic shear is treated in the framework of a local shearing box. There are no linearly growing eigenmodes, so all excitations are transient. The maximal amplification factor of initial perturbations and the corresponding wavenumbers are calculated as functions of q/\\epsilon (=safety factor/aspect ratio), temperature gradient and velocity shear. Analytical results are corroborated and supplemented by linear gyrokinetic numerical tests. For sufficiently low values of q/\\epsilon (<7 in our model), regimes with fully suppressed ion-scale turbulence are po...

Schekochihin, A A; Cowley, S C

2011-01-01T23:59:59.000Z

140

Reversible electron beam heating for suppression of microbunching instabilities at free-electron lasers  

E-Print Network [OSTI]

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) in front and behind a magnetic bunch compressor chicane. The additional energy spread will be introduced in the first TDS, which suppresses the microbunching instability, and then will be eliminated in the second T...

Behrens, Christopher; Xiang, Dao

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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.


141

Transport enhancement and suppression in turbulent magnetic reconnection: A self-consistent turbulence model  

SciTech Connect (OSTI)

Through the enhancement of transport, turbulence is expected to contribute to the fast reconnection. However, the effects of turbulence are not so straightforward. In addition to the enhancement of transport, turbulence under some environment shows effects that suppress the transport. In the presence of turbulent cross helicity, such dynamic balance between the transport enhancement and suppression occurs. As this result of dynamic balance, the region of effective enhanced magnetic diffusivity is confined to a narrow region, leading to the fast reconnection. In order to confirm this idea, a self-consistent turbulence model for the magnetic reconnection is proposed. With the aid of numerical simulations where turbulence effects are incorporated in a consistent manner through the turbulence model, the dynamic balance in the turbulence magnetic reconnection is confirmed.

Yokoi, N. [Institute of Industrial Science, University of Tokyo, Tokyo (Japan)] [Institute of Industrial Science, University of Tokyo, Tokyo (Japan); Higashimori, K.; Hoshino, M. [Department of Earth and Planetary Science, University of Tokyo, Tokyo (Japan)] [Department of Earth and Planetary Science, University of Tokyo, Tokyo (Japan)

2013-12-15T23:59:59.000Z

142

NO.sub.x catalyst and method of suppressing sulfate formation in an exhaust purification system  

DOE Patents [OSTI]

The activity and durability of a zeolite lean-burn NOx catalyst can be increased by loading metal cations on the outer surface of the zeolite. However, the metal loadings can also oxidize sulfur dioxide to cause sulfate formation in the exhaust. The present invention is a method of suppressing sulfate formation in an exhaust purification system including a NO.sub.x catalyst. The NO.sub.x catalyst includes a zeolite loaded with at least one metal. The metal is selected from among an alkali metal, an alkaline earth metal, a lanthanide metal, a noble metal, and a transition metal. In order to suppress sulfate formation, at least a portion of the loaded metal is complexed with at least one of sulfate, phosphate, and carbonate.

Balmer-Millar, Mari Lou (Chillicothe, IL); Park, Paul W. (Peoria, IL); Panov, Alexander G. (Peoria, IL)

2007-06-26T23:59:59.000Z

143

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

144

Threshold model and the latest NA50 data on $J/?$ suppression in Pb+Pb collisions  

E-Print Network [OSTI]

Using the QGP motivated threshold model, where all the $J/\\psi$'s are suppressed above a threshold density, we have analyzed the latest version of the NA50 data on the centrality dependence of the $J/\\psi$ over Drell-Yan ratio. The data are not well explain in the model, unless the threshold density is largely smeared. Large smeared threshold density effectively excludes creation of any deconfined medium in the collision.

A. K. Chaudhuri

2003-05-26T23:59:59.000Z

145

Instability suppression of clusters of vector-necklace-ring solitons in nonlocal media  

SciTech Connect (OSTI)

We study the instability suppression of vector-necklace-ring soliton clusters carrying zero, integer, and fractional angular momentums in nonlocal nonlinear media with an arbitrary degree of nonlocality. We show that the combination of nonlocality and mutual trapping of soliton constituent components can completely stabilize the vector-necklace-ring soliton clusters which are otherwise only quasistable in local media. Our results may be useful to studies of the novel soliton states in Bose-Einstein with dipolar long-range interactions.

Shen Ming [Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444 (China); Institute of Photonics Technologies, National Tsing-Hua University, Hsinchu 300, Taiwan (China); Department of Physics, National Chung-Hsing University, Taichung 402, Taiwan (China); Kong Qian [Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444 (China); Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia); Jeng, Chien-Chung [Department of Physics, National Chung-Hsing University, Taichung 402, Taiwan (China); Ge Lijuan [Department of Physics, Shanghai University, 99 Shangda Road, Shanghai 200444 (China); Lee, Ray-Kuang [Institute of Photonics Technologies, National Tsing-Hua University, Hsinchu 300, Taiwan (China); Krolikowski, Wieslaw [Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia)

2011-02-15T23:59:59.000Z

146

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

SciTech Connect (OSTI)

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

147

MEASUREMENTS OF ABSORPTION, EMISSIVITY REDUCTION, AND LOCAL SUPPRESSION OF SOLAR ACOUSTIC WAVES IN SUNSPOTS  

SciTech Connect (OSTI)

The power of solar acoustic waves in magnetic regions is lower relative to the quiet Sun. Absorption, emissivity reduction, and local suppression of acoustic waves contribute to the observed power reduction in magnetic regions. We propose a model for the energy budget of acoustic waves propagating through a sunspot in terms of the coefficients of absorption, emissivity reduction, and local suppression of the sunspot. Using the property that the waves emitted along the wave path between two points have no correlation with the signal at the starting point, we can separate the effects of these three mechanisms. Applying this method to helioseismic data filtered with direction and phase-velocity filters, we measure the fraction of the contribution of each mechanism to the power deficit in the umbra of the leading sunspot of NOAA 9057. The contribution from absorption is 23.3 {+-} 1.3%, emissivity reduction 8.2 {+-} 1.4%, and local suppression 68.5 {+-} 1.5%, for a wave packet corresponding to a phase velocity of 6.98 x 10{sup -5} rad s{sup -1}.

Chou, D.-Y.; Liang, Z.-C.; Yang, M.-H.; Zhao Hui [Physics Department, National Tsing Hua University, Hsinchu, Taiwan (China); Sun, M.-T. [Department of Mechanical Engineering, Chang-Gung University, Kwei-San, Taiwan (China)], E-mail: chou@phys.nthu.edu.tw

2009-05-01T23:59:59.000Z

148

Knockdown of p53 suppresses Nanog expression in embryonic stem cells  

SciTech Connect (OSTI)

Highlights: •We investigate the role of p53 in ESCs in the absence of DNA damage. •p53 knockdown suppresses ESC proliferation. •p53 knockdown downregulates Nanog expression. •p53 is essential for mouse ESC self-renewal. -- Abstract: Mouse embryonic stem cells (ESCs) express high levels of cytoplasmic p53. Exposure of mouse ESCs to DNA damage leads to activation of p53, inducing Nanog suppression. In contrast to earlier studies, we recently reported that chemical inhibition of p53 suppresses ESC proliferation. Here, we confirm that p53 signaling is involved in the maintenance of mouse ESC self-renewal. RNA interference-mediated knockdown of p53 induced downregulation of p21 and defects in ESC proliferation. Furthermore, p53 knockdown resulted in a significant downregulation in Nanog expression at 24 and 48 h post-transfection. p53 knockdown also caused a reduction in Oct4 expression at 48 h post-transfection. Conversely, exposure of ESCs to DNA damage caused a higher reduction of Nanog expression in control siRNA-treated cells than in p53 siRNA-treated cells. These data show that in the absence of DNA damage, p53 is required for the maintenance of mouse ESC self-renewal by regulating Nanog expression.

Abdelalim, Essam Mohamed, E-mail: emohamed@qf.org.qa [Qatar Biomedical Research Institute, Qatar Foundation, Doha 5825 (Qatar); Molecular Neuroscience Research Center, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga 520-2192 (Japan); Department of Cytology and Histology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia (Egypt); Tooyama, Ikuo [Molecular Neuroscience Research Center, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga 520-2192 (Japan)] [Molecular Neuroscience Research Center, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga 520-2192 (Japan)

2014-01-10T23:59:59.000Z

149

Forebay Computational Fluid Dynamics Modeling for The Dalles Dam to Support Vortex Suppress Device Studies  

SciTech Connect (OSTI)

A computational fluid dynamics (CFD) model was used in an investigation into the suppression of a surface vortex that forms and the south-most spilling bay at The Dalles Project. The CFD work complemented work at the prototype and the reduced-scale physical models. The CFD model was based on a model developed for other work in the forebay but had additional resolution added near the spillway. Vortex suppression devices (VSDs) were to placed between pier noses and/or in the bulkhead slot of the spillway bays. The simulations in this study showed that placing VSD structures or a combination of structures to suppress the vortex would still result in near-surface flows to be entrained in a vortex near the downstream spillwall. These results were supported by physical model and prototype studies. However, there was a consensus of the fish biologists at the physical model that the fish would most likely move north and if the fish went under the VSD it would immediately exit the forebay through the tainter gate and not get trapped between VSDs or the VSDs and the tainter gate if the VSDs were deep enough.

Rakowski, Cynthia L.; Richmond, Marshall C.; Serkowski, John A.

2006-12-01T23:59:59.000Z

150

Experimental investigation of sedimentation of LOCA - generated fibrous debris and sludge in BWR suppression pools  

SciTech Connect (OSTI)

Several tests were conducted in a 1:2.4 scale model of a Mark I suppression pool to investigate the behavior of fibrous insulation and sludge debris under LOCA conditions. NUKON{trademark} shreds, manually cut and tore up in a leaf shredder, and iron oxide particles were used to simulate fibrous and sludge debris, respectively. The suppression pool model included four downcomers fitted with pistons to simulate the steam-water oscillations during chugging expected during a LOCA. The study was conducted to provide debris settling velocity data for the models used in the BLOCKAGE computer code, developed to estimate the ECCS pump head loss due to clogging of the strainers with LOCA generated debris. The tests showed that the debris, both fibrous and particulate, remains fully mixed during chugging; they also showed that, during chugging, the fibrous debris underwent fragmentation into smaller sizes, including individual fibers. Measured concentrations showed that fibrous debris settled slower than the sludge, and that the settling behavior of each material is independent of the presence of the other material. Finally, these tests showed that the assumption of considering uniform debris concentration during strainer calculations is reasonable. The tests did not consider the effects of the operation of the ECCS on the transport of debris in the suppression pool.

Souto, F.J.; Rao, D.V.

1995-12-01T23:59:59.000Z

151

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

SciTech Connect (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

152

1Lesions in the mRNA cap-binding gene ABA HYPERSENSITIVE 1 suppress FRIGIDA-mediated delayed  

E-Print Network [OSTI]

1Lesions in the mRNA cap-binding gene ABA HYPERSENSITIVE 1 suppress FRIGIDA-mediated delayed morphology were identified in T-DNA and fast-neutron mutant populations. Molecular analysis showed

Raines, Ronald T.

153

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

SciTech Connect (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] [SNL

2012-06-01T23:59:59.000Z

154

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

ScienceCinema (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

2013-02-11T23:59:59.000Z

155

A forced response analysis and application of impact dampers to rotordynamic vibration suppression in a cryogenic environment  

E-Print Network [OSTI]

A FORCED RESPONSE ANALYSIS AND APPLICATION OF IMPACT DAMPERS TO ROTORDYNAMIC VIBRATION SUPPRESSION IN A CRYOGENIC ENVIRONMENT A Thesis by JAMES JEFFREY MOORE Submitted to the Office of Graduate Studies of Texas ARM University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1993 Major Subject: Mechanical Engineering A FORCED RESPONSE ANALYSIS AND APPLICATION OF IMPACT DAMPERS TO ROTORDYNAMIC VIBRATION SUPPRESSION IN A CRYOGENIC ENVIRONMENT A Thesis...

Moore, James Jeffrey

1993-01-01T23:59:59.000Z

156

$J/?$ suppression and $p_T$ spectra in RHIC and LHC energy collisions  

E-Print Network [OSTI]

In a hydrodynamic model, we have studied $J/\\psi$ production in Au+Au/Cu+Cu collisions at RHIC energy $\\sqrt{s}$=200 GeV. At the initial time, $J/\\psi$'s are randomly distributed in the fluid. As the fluid evolve in time, the free streaming $J/\\psi$'s are dissolved if the local fluid temperature exceeds a threshold temperature $T_{J/\\psi}$. Sequential melting of charmonium states ($\\chi_c$, $\\psi\\prime$ and $J/\\psi$), with melting temperatures $T_{\\chi_c}=T_{\\psi\\prime} \\approx 1.2T_c$, $T_{J/\\psi} \\approx2T_c$ and feed-down fraction $F\\approx 0.3$, explains the PHENIX data on the centrality dependence of $J/\\psi$ suppression in Au+Au collisions. $J/\\psi$ $p_T$ spectra and the nuclear modification factor in Au+Au collisions are also well explained in the model. The model however over predict centrality dependence of $J/\\psi$ suppression in Cu+Cu collisions by 20-30%. The $J/\\psi$ $p_T$ spectra are under predicted by 20-30%. The model predict that in central Pb+Pb collisions at LHC energy, $\\sqrt{s}$=5500 GeV, $J/\\psi$'s are suppressed by a factor of $\\sim$ 10. The model predicted $J/\\psi$ $p_T$ distribution in Pb+Pb collisions at LHC is similar to that in Au+Au collisions at RHIC.

A. K. Chaudhuri

2008-11-24T23:59:59.000Z

157

p53 Mutation suppresses adult neurogenesis in medaka fish (Oryzias latipes)  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Progenitor migration is accompanied by an increase in their numbers in the adult brain. Black-Right-Pointing-Pointer p53 Mutation suppressed an increase in the number of the migrated progenitors. Black-Right-Pointing-Pointer The decreased progenitor number is not due to enhanced cell death. Black-Right-Pointing-Pointer p53 Mutation did not affect proliferation of stem cells. -- Abstract: Tumor suppressor p53 negatively regulates self-renewal of neural stem cells in the adult murine brain. Here, we report that the p53 null mutation in medaka fish (Oryzias latipes) suppressed neurogenesis in the telencephalon, independent of cell death. By using 5-bromo-29-deoxyuridine (BrdU) immunohistochemistry, we identified 18 proliferation zones in the brains of young medaka fish; in situ hybridization showed that p53 was expressed selectively in at least 12 proliferation zones. We also compared the number of BrdU-positive cells present in the whole telencephalon of wild-type (WT) and p53 mutant fish. Immediately after BrdU exposure, the number of BrdU-positive cells did not differ significantly between them. One week after BrdU-exposure, the BrdU-positive cells migrated from the proliferation zone, which was accompanied by an increased number in the WT brain. In contrast, no significant increase was observed in the p53 mutant brain. Terminal deoxynucleotidyl transferase (dUTP) nick end-labeling revealed that there was no significant difference in the number of apoptotic cells in the telencephalon of p53 mutant and WT medaka, suggesting that the decreased number of BrdU-positive cells in the mutant may be due to the suppression of proliferation rather than the enhancement of neural cell death. These results suggest that p53 positively regulates neurogenesis via cell proliferation.

Isoe, Yasuko; Okuyama, Teruhiro [Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan)] [Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan); Taniguchi, Yoshihito [Department of Preventive Medicine and Public Health, School of Medicine, Keio University, 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582 (Japan)] [Department of Preventive Medicine and Public Health, School of Medicine, Keio University, 35, Shinanomachi, Shinjuku-ku, Tokyo 160-8582 (Japan); Kubo, Takeo [Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan)] [Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan); Takeuchi, Hideaki, E-mail: takeuchi@biol.s.u-tokyo.ac.jp [Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan)] [Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan)

2012-07-13T23:59:59.000Z

158

Generation of plasma inhomogeneities and their total suppression in a volume self-sustained discharge  

SciTech Connect (OSTI)

The principle types of inhomogeneities formed in a volume self-sustained discharge are analyzed. Possible mechanisms and conditions for suppression of their development are considered. An ultimately homogeneous volume self-sustained discharge in CO{sub 2}: N{sub 2}: He mixtures where local plasma inhomogeneities are absent is obtained. At the energy contribution of 170 J/l, the duration of steady discharge burning in the CO{sub 2}: N{sub 2}: He = 1: 2: 3 mixtures at atmospheric pressure is 10 {mu}s.

Khomich, V. Yu.; Yamschikov, V. A., E-mail: yamschikov52@mail.ru [Russian Academy of Sciences, Institute for Electrophysics and Electroenergetics (Russian Federation)

2011-12-15T23:59:59.000Z

159

Measurement of wakefield suppression in a detuned x-band accelerator structure  

SciTech Connect (OSTI)

Research is underway at SLAC to develop accelerator structures for a next generation linear collider. A full-scale prototype X-band structure has been built in which the dipole mode frequencies were detuned to suppress the long-range transverse wakefield by about two orders of magnitude. To verify that the detuning works as expected, a facility to measure the long-range wakefield, called the Accelerator Structure SETup, or ASSET, was constructed in the SLAC Linear Collider (SLC). This paper presents the results from the measurement of the prototype X-band structure with this facility.

Adolphsen, C.; Bane, K.; Higo, T.; Kubo, K.; Miller, R.; Ruth, R.; Thompson, K.; Wang, J.

1994-08-01T23:59:59.000Z

160

Suppression of tin precipitation in SiSn alloy layers by implanted carbon  

SciTech Connect (OSTI)

By combining transmission electron microscopy and Rutherford backscattering spectrometry, we have identified carbon related suppression of dislocations and tin precipitation in supersaturated molecular-beam epitaxial grown SiSn alloy layers. Secondary ion mass spectrometry has exposed the accumulation of carbon in the SiSn layers after high temperature carbon implantation and high temperature thermal treatment. Strain-enhanced separation of point defects and formation of dopant-defect complexes are suggested to be responsible for the effects. The possibility for carbon assisted segregation-free high temperature growth of heteroepitaxial SiSn/Si and GeSn/Si structures is argued.

Gaiduk, P. I., E-mail: gaiduk@phys.au.dk [Department of Physics and Astronomy/iNANO, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C (Denmark); Belarusian State University, prosp. Nezavisimosti 4, 220030 Minsk (Belarus); Lundsgaard Hansen, J., E-mail: johnlh@phys.au.dk; Nylandsted Larsen, A., E-mail: anl@phys.au.dk [Department of Physics and Astronomy/iNANO, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C (Denmark); Bregolin, F. L., E-mail: f.lipp-bregolin@hzdr.de; Skorupa, W., E-mail: W.Skorupa@hzdr.de [Department of Semiconductor Materials, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden (Germany)

2014-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" from the National Library of EnergyBeta (NLEBeta).
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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.


161

Strangeness Suppression in q-qbar Creation Observed in Exclusive Reactions  

E-Print Network [OSTI]

We measured the ratios of electroproduction cross-sections from a proton target for three exclusive meson-baryon final states: $\\Lambda K^+$, $p\\pi^0$, and $n\\pi^+$, with the CLAS detector at Jefferson Lab. Using a simple model of quark hadronization we extract q-qbar creation probabilities for the first time in exclusive two-body production, in which only a single q-qbar pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to non-strange pairs, similar to that seen in high-energy production.

K. Park; M. D. Mestayer; the CLAS collaboration

2014-12-09T23:59:59.000Z

162

$J/\\psi$ suppression at FAIR energy collisions and QCD phase diagram  

E-Print Network [OSTI]

Survival probability for $J/\\psi$'s in FAIR energy collisions is studied in a QGP motivated threshold model. In the threshold model $J/\\psi$'s are assumed to dissociate beyond a threshold temperature $T_{J/\\psi}$. Model parameters are obtained by analysing experimental data in $\\snn$=17.4 and 200 GeV collisions. In low energy collisions, model is sensitive to the QCD phase diagram. The model predicts that $J/\\psi$'s are least suppressed in $\\sqrt{s}_{NN}\\approx$ 40 GeV collisions.

Chaudhuri, A K

2012-01-01T23:59:59.000Z

163

Search for the highly suppressed decays B- -> K+ pi- pi- and B- -> K- K- pi+  

E-Print Network [OSTI]

We report a search for the decays B- -> K+ pi- pi- and B- -> K- K- pi+, which are highly suppressed in the Standard Model. Using a sample of (467 +/- 5) x 10^6 BBbar pairs collected with the BaBar detector, we do not see any evidence of these decays and determine 90% confidence level upper limits of BF(B- -> K+ pi- pi-) K- K- pi+) < 1.6 x 10^-7 on the corresponding branching fractions, including systematic uncertainties.

The BABAR Collaboration; B. Aubert

2008-11-14T23:59:59.000Z

164

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

DOE Patents [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

165

Enhanced UV and suppressed defect related emission in yttrium doped zinc oxide  

SciTech Connect (OSTI)

Yttrium doped ZnO (YZO) synthesized through conventional solid state reaction method using ZnO and Y{sub 2}O{sub 3} as starting material. The formation of YZO compounds were confirmed by X-ray diffraction and Raman spectroscopy. Photoluminescence measurements revealed an enhanced ultra-violet (UV) and suppressed defect related emission in YZO which is due to reduction in the concentration of the defects related to oxygen interstitials (O{sub i}) and zinc vacancy (V{sub Zn}) of ZnO.

Sharma, Vikas; Vyas, Rishi; Sachdev, K. [Department of Physics, Malaviya National Institute of Technology, Jaipur - 302017 (India); Kumar, Parmod, E-mail: parmodphysics@gmail.com; Malik, Hitendra K. [Department of Physics, Indian Institute of Technology Delhi, New Delhi - 110016 (India); Rana, Geeta [Department of Physics, G. B. Pant University of Agriculture and Technology, Pantnagar - 263145 (India); Asokan, K. [Material Science Division, Inter University Accelerator Centre, New Delhi - 110067 (India)

2014-04-24T23:59:59.000Z

166

Suppression of conductivity in Mn-Doped ZnO Thin Films. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystalline GalliumSuppression of conductivity in Mn-Doped ZnO Thin Films.

167

Empirical Study Of Tube Wave Suppression For Single Well Seismic Imaging  

SciTech Connect (OSTI)

This report addresses the Idaho National Engineering and Environmental Laboratory's portion of a collaborative effort with Lawrence Berkeley National Laboratory and Sandia National Laboratories on a borehole seismic project called Single Well Seismic Imaging. The INEEL's role was to design, fabricate, deploy, and test a number of passive devices to suppress the energy within the borehole. This energy is generally known as tube waves. Heretofore, tube waves precluded acquisition of meaningful single-well seismic data. This report addresses the INEEL tests, theories, observations, and test results.

West, Phillip Bradley; Weinberg, David Michael; Fincke, James Russell

2002-05-01T23:59:59.000Z

168

Empirical Study Of Tube Wave Suppression For Single Well Seismic Imaging  

SciTech Connect (OSTI)

This report addresses the Idaho National Engineering and Environmental Laboratory's portion of a collaborative effort with Lawrence Berkeley National Laboratory and Sandia National Laboratories on a borehole seismic project called Single Well Seismic Imaging. The INEEL's role was to design, fabricate, deploy, and test a number of passive devices to suppress the energy within the borehole. This energy is generally known as tube waves. Heretofore, tube waves precluded acquisition of meaningful single-well seismic data. This report addresses the INEEL tests, theories, observations, and test results.

West, P.B.; Weinberg, D.M.; Fincke, J.R.

2002-05-31T23:59:59.000Z

169

A sheet on deformable sphere: "wrinklogami" patterns suppress curvature-induced delamination  

E-Print Network [OSTI]

The adhesion of a stiff film onto a curved substrate often generates elastic stresses in the film that eventually give rise to its delamination. Here we predict that delamination of very thin films can be dramatically suppressed through tiny, smooth deformations of the substrate, dubbed here "wrinklogami", that barely affect the macroscale topography. This "pro-lamination" effect reflects a surprising capability of smooth wrinkles to suppress compression in elastic films even when spherical or other doubly-curved topography is imposed, in a similar fashion to origami folds that enable construction of curved structures from an unstretchable paper. We show that the emergence of a wrinklogami pattern signals a nontrivial isometry of the sheet to its planar, undeformed state, in the doubly asymptotic limit of small thickness and weak tensile load exerted by the adhesive substrate. We explain how such an "asymptotic isometry" concept broadens the standard usage of isometries for describing the response of elastic sheets to geomertric constraints and mechanical loads.

Evan Hohlfeld; Benny Davidovitch

2014-11-20T23:59:59.000Z

170

Soot suppression by ferrocene in laminar ethylene/air nonpremixed flames  

SciTech Connect (OSTI)

An experimental investigation is presented on the origin of the soot suppressing role of ferrocene additive in laminar, coannular, ethylene/air nonpremixed flames. The conditions examined involve laminar flames operating above and below their smoke point. In-flame diagnostics are employed to discern the interaction between the soot matrix and additive combustion products. The data presented in a previous study, as produced by thermophoretic sampling, transmission electron microscopy and high-resolution microanalysis techniques, are supplemented by soot volume fraction, temperature, and soot primary size measurements to unravel the mechanisms through which ferrocene combustion products influence soot formation processes. Furthermore, Z-contrast scanning/transmission electron microscopy is used to examine the over-fire aerosol and, in turn, provide insight on the fine-scale dispersion of iron fragments within the carbonaceous soot matrix. It is shown that ferrocene seeding of the fuel stream accelerates the particular inception mechanisms, but does not influence soot loadings when soot growth is dominant. Ferrocene is also found to enhance soot oxidation rates near the flame terminus. It is concluded that the fine-scale incorporation of iron compounds within the soot matrix is a primary factor for the soot suppressing role of ferrocene in nonpremixed flames.

Zhang, J.; Megaridis, C.M. [Univ. of Illinois, Chicago, IL (United States). Dept. of Mechanical Engineering] [Univ. of Illinois, Chicago, IL (United States). Dept. of Mechanical Engineering

1996-06-01T23:59:59.000Z

171

Preliminary conceptual design study of a suppressed-fission tokamak hybrid  

SciTech Connect (OSTI)

A preliminary design concept for a commercial-size tokamak fusion breeder with a suppressed fission blanket and emphasis on /sup 233/U breeding has been formulated. The design is based upon a similar tandem mirror hybrid concept and addresses particular concerns relating to the use of a tokamak for the suppressed fission blanket application. The single most important departure from the tandem mirror reference blanket concept is the substitution of FLIBE for the liquid lithium used for cooling and in-situ tritium breeding. A concern for excessive MHD-related problems drove the decision to replace the more highly conductive lithium. As a result of the new coolant selection, material compatibility issues mandated changes in the composition of the mobile fuel pellets. In addition, the higher operating temperatures associated with the FLIBE placed more stringent constraints on structural requirements and reduced several design margins. Neutronics analyses predicted relatively poor blanket performance with tritium breeding of 1.02 and fissile /sup 233/U breeding of 0.34.

Grady, D.; Berwald, D.; Garner, J.; Jassby, D.; Karbowski, J.; DeVan, J.; Lee, J.D.; Moir, R.W.

1983-01-01T23:59:59.000Z

172

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

SciTech Connect (OSTI)

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

173

An assessment of alternatives and technologies for replacing ozone- depleting substances at DOE facilities  

SciTech Connect (OSTI)

Title VI of the Clean Air Act, as amended, mandates a production phase-out for ozone-depleting substances (ODSs). These requirements will have a significant impact on US Department of Energy (DOE) facilities. Currently, DOE uses ODSs in three major activities: fire suppression (halon), refrigeration and cooling (chlorofluorocarbons [CFCs]), and cleaning that requires solvents (CFCs, methyl chloroform, and carbon tetrachloride). This report provides basic information on methods and strategies to phase out use of ODSs at DOE facilities.

Purcell, C.W.; Miller, K.B.; Friedman, J.R.; Rapoport, R.D.; Conover, D.R.; Hendrickson, P.L. [Pacific Northwest Lab., Richland, WA (United States); Koss, T.C. [USDOE Assistant Secretary for Environment, Safety, and Health, Washington, DC (United States). Office of Environmental Guidance

1992-10-01T23:59:59.000Z

174

Fission-suppressed fusion breeder on the thorium cycle and nonproliferation  

SciTech Connect (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{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

175

Sequential melting of charmonium states in an expanding Quark Gluon Plasma and $J/?$ suppression at RHIC and LHC energy collisions  

E-Print Network [OSTI]

We have developed a hydrodynamic model to study sequential melting of charmonium states in an expanding QGP medium. According to the initial fluid temperature profile, $J/\\psi$'s are randomly distributed in the transverse plane. As the fluid evolve in time, the free streaming $J/\\psi$'s are suppressed if the local fluid temperature exceed a critical temperature. PHENIX data on the centrality dependence of $J/\\psi$ suppression in Au+Au collisions at mid-rapidity are explained by sequential melting of the charmonium states, $\\chi_c$, $\\psi\\prime$ and $J/\\psi$, in the expanding medium. The critical temperatures $T_{J/\\psi} \\approx2.09T_c$ and $T_\\chi=T_{\\chi_c}=T_{\\psi\\prime} \\approx 1.1T_c$ agree with lattice motivated calculations. The feed-down fraction $F$ depend on whether the cold nuclear matter effect is included or not. It changes from $F=0.3$ with cold nuclear matter effect included to $F=0.5$ when the effect is neglected. Model fails to reproduce the PHENIX data on the centrality dependence of $J/\\psi$ suppression in Cu+Cu collisions at mid-rapidity, indicating that the mechanism of $J/\\psi$ suppression is different in Au+Au and in Cu+Cu collisions. We also use the model to predict for the centrality dependence of $J/\\psi$ suppression in Pb+Pb collisions at LHC energy, $\\sqrt{s}$=5500 GeV. In LHC energy, $J/\\psi$'s are more suppressed in mid central collisions than in Au+Au collisions at RHIC energy.

A. K. Chaudhuri

2008-07-04T23:59:59.000Z

176

Management of thyroid nodules: scanning techniques, thyroid suppressive therapy, and fine needle aspiration  

SciTech Connect (OSTI)

For the differentiation of benign from malignant thyroidal disease, ultrasound displays anatomic but not histologic features. Other visualization techniques can be used including isotope scanning (radioiodine, 99m technetium, 241 americium fluorescence, 131 cesium, 67 gallium, 75 selenomethionine, 201 thallium, 32 phosphorus, 99m Tc-bleomycin, 197 mercury, 133 xenon), thermography, x-ray techniques (plain films, computed tomographic scan, xeroradiography, chest x-ray barium swallow, lymphography, angiography), and thyroid hormone suppression. Needle biopsy can be done by core biopsy (Vim-Silverman and drill biopsy), large needle biopsy for histologic processing and fine needle aspiration for cytologic interpretation. The latter is the safest, most reliable, and most cost-effective technique currently available to differentiate between benign and malignant thyroidal disease and has great promise for the future.

Ashcraft, M.W.; Van Herle, A.J.

1981-03-01T23:59:59.000Z

177

Operation of a high purity germanium crystal in liquid argon as a Compton suppressed radiation spectrometer  

E-Print Network [OSTI]

A high purity germanium crystal was operated in liquid argon as a Compton suppressed radiation spectrometer. Spectroscopic quality resolution of less than 1% of the full-width half maximum of full energy deposition peaks was demonstrated. The construction of the small apparatus used to obtain these results is reported. The design concept is to use the liquid argon bath to both cool the germanium crystal to operating temperatures and act as a scintillating veto. The scintillation light from the liquid argon can veto cosmic-rays, external primordial radiation, and gamma radiation that does not fully deposit within the germanium crystal. This technique was investigated for its potential impact on ultra-low background gamma-ray spectroscopy. This work is based on a concept initially developed for future germanium-based neutrinoless double-beta decay experiments.

John L. Orrell; Craig E. Aalseth; John F. Amsbaugh; Peter J. Doe; Todd W. Hossbach

2006-10-11T23:59:59.000Z

178

Suppression of star formation in early-type galaxies by feedback from supermassive black holes  

E-Print Network [OSTI]

Detailed high-resolution observations of the innermost regions of nearby galaxies have revealed the presence of supermassive black holes1. These black holes may interact with their host galaxies by means of 'feedback' in the form of energy and material jets; this feedback affects the evolution of the host and gives rise to observed relations between the black hole and the host. Here we report observations of the ultraviolet emissions of massive early-type galaxies. We derive an empirical relation for a critical black-hole mass (as a function of velocity dispersion) above which the outflows from these black holes suppress star formation in their hosts by heating and expelling all available cold gas. Supermassive black holes are negligible in mass compared to their hosts but nevertheless seem to play a critical role in the star formation history of galaxies.

Kevin Schawinski; Sadegh Khochfar; Sugata Kaviraj; Sukyoung K. Yi; Alessandro Boselli; Tom Barlow; Tim Conrow; Karl Forster; Peter G. Friedman; D. Chris Martin; Patrick Morrissey; Susan Neff; David Schiminovich; Mark Seibert; Todd Small; Ted K. Wyder; Luciana Bianchi; Jose Donas; Tim Heckman; Young-Wook Lee; Barry Madore; Bruno Milliard; R. Michael Rich; Alex Szalay

2006-08-24T23:59:59.000Z

179

Investigation of the suppression effect of polyethylene glycol on copper electroplating by electrochemical impedance spectroscopy  

SciTech Connect (OSTI)

Polyethylene glycol (PEG) is an additive that is commonly used as a suppressor in the semiconductor copper (Cu)-electroplating process. In this study, electrochemical impedance spectroscopy (EIS) was used to analyze the electrochemical behavior of PEG in the Cu-electroplating process. Polarization analysis, cyclic-voltammetry stripping, and cell voltage versus plating time were examined to clarify the suppression behavior of PEG. The equivalent circuit simulated from the EIS data shows that PEG inhibited the Cu-electroplating rate by increasing the charge-transfer resistance as well as the resistance of the adsorption layer. The presence of a large inductance demonstrated the strong adsorption of cuprous-PEG-chloride complexes on the Cu surface during the Cu-electroplating process. Increasing the PEG concentration appears to increase the resistances of charge transfer, the adsorption layer, and the inductance of the electroplating system.

Hung, C.-C.; Lee, W.-H.; Wang, Y.-L.; Chan, D.-Y.; Hwang, G.-J. [Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan (China); Department of Electrical Engineering, National Chiayi University, Chiayi, Taiwan (China); College of Science and Engineering, National University of Tainan, Tainan 700, Taiwan (China)

2008-09-15T23:59:59.000Z

180

Graphene as a Substrate To Suppress Fluorescence in Resonance Raman Spectroscopy  

E-Print Network [OSTI]

Resonance Raman spectroscopy (RRS), which can enhance Raman signal by 107 times than normal Raman spectroscopy, is a powerful approach to characterize structures of chemicals (especially biomolecules) at low concentrations.1-4 However, fluorescence (FL) background is a major obstacle in RRS because the FL cross section (?10-16 cm2) is much larger than the RRS cross section (?10-22 cm2).3 Several approaches, such as ultraviolet RRS (UV-RRS),1 time-resolved Raman detection,5,6 femtosecond broadband stimu-lated Raman spectroscopy (FSRS),7 and coherent anti-Stokes Raman spectroscopy (CARS),8 have been used to suppress or reject FL background in RRS. However, these approaches need expensive and complex equipments and have other limitations, such as sample degradation in UV-RRS. Surface-enhanced Raman spectroscopy (SERS) is another powerful approach to characterize structures of chemicals at extremely low concentrations or even at the single

Liming Xie; Xi Ling; Yuan Fang; Jin Zhang; Zhongfan Liu

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

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

182

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

183

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

SciTech Connect (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

184

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

SciTech Connect (OSTI)

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

185

E-Print Network 3.0 - argus reactor Sample Search Results  

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

Centre de mathmatiques Collection: Mathematics 92 Proposed Program: Reliability-Centered Maintenance (RCM) for the High Flux Isotope Reactor Summary: Proposed Program:...

186

Argus: An L-Band Array for Detection of Astronomical Transients Steven W. Ellingson  

E-Print Network [OSTI]

component of gamma ray bursts (e.g., [2], [3]) and the intermittent "giant pulses" generated by some pulsars

Ellingson, Steven W.

187

E-Print Network 3.0 - argus gamma camera Sample Search Results  

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

of Astronomical Transients Steven W. Ellingson and Grant A... component of gamma ray bursts (e.g., 2, 3) and the intermittent "giant pulses" generated by some...

188

ARG-US RADIO FREQUENCY IDENTIFICATION (RFID) Technology (IN-08-046) -  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience4AJ01) (See95TI07)Operations2AP-XPSAPS50 -Issue 60ARCS - Access

189

Plant foliar disease suppression mediated by composted forms of paper mill residuals exhibits molecular features of induced resistance  

E-Print Network [OSTI]

Plant foliar disease suppression mediated by composted forms of paper mill residuals exhibits Arabidopsis thaliana grown in soil from field plots amended with composted forms of paper mill residuals (PMR with plants grown in soil from field plots amended with a non-composted PMR or non-amended soils. Similar

Goodman, Robert M.

190

Dominant-Negative Synthesis Suppression of Voltage-Gated Calcium Channel Cav2.2 Induced by Truncated Constructs  

E-Print Network [OSTI]

Dominant-Negative Synthesis Suppression of Voltage-Gated Calcium Channel Cav2.2 Induced, United Kingdom Voltage-gated calcium channel 1 subunits consist of four domains (I­IV), each with six by the cytoplasmic I-II loop of Cav2.2. It requires transmembrane seg- ments, because the isolated Cav2.2 N terminus

Dolphin, Annette C.

191

Fractal-Shape 40 GHz Microstrip Bandpass Filter on High-Resistivity Si for Suppression of the 2nd  

E-Print Network [OSTI]

Fractal-Shape 40 GHz Microstrip Bandpass Filter on High-Resistivity Si for Suppression of the 2nd, the Koch fractal shape is applied for the first time to microstrip bandpass filters integrated on a high. To reduce the silicon substrate loss, high resistivity silicon (HRS) can be used. Several fractal geometries

Tentzeris, Manos

192

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

E-Print Network [OSTI]

............... 131 Figure 85. Un-mitigated continuous spill - hydrocarbon camera snapshots .................. 133 Figure 86. Foamglas hydrocarbon camera snapshots ..................................................... 134 Figure 87. Methane cloud characteristics... - no suppression and with expansion foam .. 134 Figure 88. Methane concentration profile in the 65m 2 pit during Foamglas?PFS application .................................................................................................... 136 Figure 89. Methane...

Suardin, Jaffee Arizon

2009-05-15T23:59:59.000Z

193

Suppression of thermal conductivity in InxGa12xN alloys by nanometer-scale disorder  

E-Print Network [OSTI]

power requires low lattice thermal conductivity while maintaining high mobility of the charge carriers. The binary InN and GaN materials have high ther- mal conductivity materials9­14 (the room-temperature thermalSuppression of thermal conductivity in InxGa12xN alloys by nanometer-scale disorder T. Tong,1,a) D

Wu, Junqiao

194

Wildfire Suppression Equipment Engines CSFS has placed 140 federal excess property vehicles located throughout the state. Our  

E-Print Network [OSTI]

Wildfire Suppression Equipment Engines ­ CSFS has placed 140 federal excess property vehicles fire engines and provides all major maintenance. The all-wheel drive (4x4 and 6x6) engines are equipped equipment such as hose, nozzles, and hand tools. These engines are inspected annually and updated

195

Method and apparatus for suppressing regenerative instability and related chatter in machine tools  

DOE Patents [OSTI]

Methods of and apparatuses for mitigating chatter vibrations in machine tools or components thereof. Chatter therein is suppressed by periodically or continuously varying the stiffness of the cutting tool (or some component of the cutting tool), and hence the resonant frequency of the cutting tool (or some component thereof). The varying of resonant frequency of the cutting tool can be accomplished by modulating the stiffness of the cutting tool, the cutting tool holder, or any other component of the support for the cutting tool. By periodically altering the impedance of the cutting tool assembly, chatter is mitigated. In one embodiment, a cyclic electric (or magnetic) field is applied to the spindle quill which contains an electro-rheological (or magneto-rheological) fluid. The variable yield stress in the fluid affects the coupling of the spindle to the machine tool structure, changing the natural frequency of oscillation. Altering the modal characteristics in this fashion disrupts the modulation of current tool vibrations with previous tool vibrations recorded on the workpiece surface.

Segalman, Daniel J. (Albuquerque, NM); Redmond, James M. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

196

Method and apparatus for suppressing regenerative instability and related chatter in machine tools  

DOE Patents [OSTI]

Methods of and apparatuses for mitigating chatter vibrations in machine tools or components thereof. Chatter therein is suppressed by periodically or continuously varying the stiffness of the cutting tool (or some component of the cutting tool), and hence the resonant frequency of the cutting tool (or some component thereof). The varying of resonant frequency of the cutting tool can be accomplished by modulating the stiffness of the cutting tool, the cutting tool holder, or any other component of the support for the cutting tool. By periodically altering the impedance of the cutting tool assembly, chatter is mitigated. In one embodiment, a cyclic electric (or magnetic) field is applied to the spindle quill which contains an electro-rheological (or magneto-rheological) fluid. The variable yield stress in the fluid affects the coupling of the spindle to the machine tool structure, changing the natural frequency of oscillation. Altering the modal characteristics in this fashion disrupts the modulation of current tool vibrations with previous tool vibrations recorded on the workpiece surface.

Segalman, Daniel J. (Albuquerque, NM); Redmond, James M. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

197

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

SciTech Connect (OSTI)

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

198

Vibration suppression in cutting tools using collocated piezoelectric sensors/actuators with an adaptive control algorithm  

SciTech Connect (OSTI)

The machining process is very important in many engineering applications. In high precision machining, surface finish is strongly correlated with vibrations and the dynamic interactions between the part and the cutting tool. Parameters affecting these vibrations and dynamic interactions, such as spindle speed, cut depth, feed rate, and the part's material properties can vary in real-time, resulting in unexpected or undesirable effects on the surface finish of the machining product. The focus of this research is the development of an improved machining process through the use of active vibration damping. The tool holder employs a high bandwidth piezoelectric actuator with an adaptive positive position feedback control algorithm for vibration and chatter suppression. In addition, instead of using external sensors, the proposed approach investigates the use of a collocated piezoelectric sensor for measuring the dynamic responses from machining processes. The performance of this method is evaluated by comparing the surface finishes obtained with active vibration control versus baseline uncontrolled cuts. Considerable improvement in surface finish (up to 50%) was observed for applications in modern day machining.

Radecki, Peter P [Los Alamos National Laboratory; Farinholt, Kevin M [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory; Bement, Matthew T [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

199

Environmental factors affecting long-term stabilization of radon suppression covers for uranium mill tailings  

SciTech Connect (OSTI)

Pacific Northwest Laboratory is investigating the use of a rock armoring blanket (riprap) to mitigate wind and water erosion of an earthen radon suppression cover applied to uranium mill tailings. To help determine design stresses for the tailings piles, environmental parameters are characterized for the five active uranium-producing regions on a site-specific basis. Only conventional uranium mills that are currently operating or that are scheduled to open in the mid 1980s are considered. Available data indicate that flooding has the most potential for disrupting a tailings pile. The arid regions of the Wyoming Basins and the Colorado Plateau are subject to brief storms of high intensity. The Texas Gulf Coast has the highest potential for extreme precipitation from hurricane-related storms. Wind data indicate average wind speeds from 3 to 6 m/sec for the sites, but extremes of 40 m/sec can be expected. Tornado risks range from low to moderate. The Colorado Plateau has the highest seismic potential, with maximum acceleration caused by earthquakes ranging from 0.2 to 0.4 g. Any direct effect from volcanic eruption is negligible, as all mills are located 90 km or more from an igneous or hydrothermal system.

Young, J.K.; Long, L.W.; Reis, J.W.

1982-04-01T23:59:59.000Z

200

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

SciTech Connect (OSTI)

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

Note: This page contains sample records for the topic "argus halon suppression" 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.


201

Fine-Scale Zonal Flow Suppression of Electron Temperature Gradient Turbulence  

SciTech Connect (OSTI)

It is found in collisionless Electron Temperature Gradient (ETG) turbulence simulations that, while zonal flows are weak at early times, the zonal flows continue to grow algebraically (proportional to time). These fine-scale zonal flows have a radial wave number such that kr{rho}i > 1 and kr{rho}e < 1. Eventually, the zonal flows grow to a level that suppresses the turbulence due to ExB shearing. The final electron energy flux is found to be relatively low. These conclusions are based on particle convergence studies with adiabatic ion electrostatic flux-tube gyrokinetic {delta}f particle simulations run for long times. The Rosenbluth-Hinton random walk mechanism is given as an explanation for the long time build up of the zonal flow in ETG turbulence and it is shown that the generation is (k perpendicular {rho}e)2 smaller than for isomorphic Ion Temperature Gradient (ITG) problem. This mechanism for zonal flow generation here is different than the modulational instability mechanism for ITG turbulence. These results are important because previous results indicated zonal flows were unimportant for ETG turbulence. Weak collisional damping of the zonal flow is also shown to be a n important effect.

Parker, S. E.; Kohut, J. J.; Chen, Y. [Center for Integrated Plasma Studies, University of Colorado, Boulder, C0 (United States); Lin, Z. [University of Californian, Irvine, CA (United States); Hinton, F. L. [Hinton Associates, Escondido, CA (United States); Lee, W. W. [Princeton Plasma Physics Laboratory, Princeton, NJ (United States)

2006-11-30T23:59:59.000Z

202

Apparatus and method for suppressing vibration and displacement of a bellows  

DOE Patents [OSTI]

Flexible bellows are utilized between two systems, such as a pumping system and a process station, to partially absorb system vibrations and to compensate for misalignment between the systems. It is common practice to either clamp a rigid spacer between flanges of the two systems to separate them from each other, or to maintain the bellows in unsupported relationship between these systems. In the former bellows arrangement, the rigid spacer transmits vibratory energy between the two systems and the bellows tends to function as an undamped or underdamped unit that resonates at its own frequency to create additional vibratory energy, transmitted to the systems. In the latter, unsupported bellows arrangement, the pressure differential prevalent between the fluid flowing through the bellows and ambient normally causes extension or retraction of the bellows and resulting misalignment problems. The present invention substantially solves the above vibration and misalignment problems by providing an inflatable tube in surrounding relationship about a bellows to suppress vibration and displacement thereof. A method for isolating first and second systems from each other to prevent the transmission of vibratory energy therebetween comprises the steps of attaching at least one flexible bellows between the systems, surrounding the bellows with an inflatable tube, and maintaining a predetermined pressure in the tube to urge the tube in flexible contact with at least some of the convolutions of the bellows.

Kuklo, T.C.

1984-01-01T23:59:59.000Z

203

Suppression of turbulence and subcritical fluctuations in differentially rotating gyrokinetic plasmas  

E-Print Network [OSTI]

Differential rotation is known to suppress linear instabilities in fusion plasmas. However, even in the absence of growing eigenmodes, subcritical fluctuations that grow transiently can lead to sustained turbulence. Here transient growth of electrostatic fluctuations driven by the parallel velocity gradient (PVG) and the ion temperature gradient (ITG) in the presence of a perpendicular ExB velocity shear is considered. The maximally simplified case of zero magnetic shear is treated in the framework of a local shearing box. There are no linearly growing eigenmodes, so all excitations are transient. The maximal amplification factor of initial perturbations and the corresponding wavenumbers are calculated as functions of q/\\epsilon (=safety factor/aspect ratio), temperature gradient and velocity shear. Analytical results are corroborated and supplemented by linear gyrokinetic numerical tests. For sufficiently low values of q/\\epsilon (subcritical PVG turbulence leading to a scaling of the associated ion heat flux with q, \\epsilon, velocity shear and temperature gradient is proposed; it is argued that the transport is much less stiff than in the ITG regime.

A. A. Schekochihin; E. G. Highcock; S. C. Cowley

2011-11-21T23:59:59.000Z

204

Inflation that runs naturally: Gravitational waves and suppression of power at large and small scales  

E-Print Network [OSTI]

We point out three correlated predictions of the axion monodromy inflation model: large amplitude of gravitational waves, suppression of power on horizon scales and on scales relevant for the formation of dwarf galaxies. While these predictions are likely generic to models with oscillations in the inflaton potential, the axion monodromy model naturally accommodates the required running spectral index through Planck-scale corrections to the inflaton potential. Applying this model to a combined data set of Planck, ACT, SPT, and WMAP low-$\\ell$ polarization cosmic microwave background (CMB) data, we find a best-fit tensor-to-scalar ratio $r_{0.05} = 0.07^{+0.05}_{-0.04}$ due to gravitational waves, which may have been observed by the BICEP2 experiment. Despite the contribution of gravitational waves, the total power on large scales (CMB power spectrum at low multipoles) is lower than the standard $\\Lambda$CDM cosmology with a power-law spectrum of initial perturbations and no gravitational waves, thus mitigating some of the tension on large scales. There is also a reduction in the matter power spectrum of 20-30\\% at scales corresponding to $k = 10~{\\rm Mpc}^{-1}$, which are relevant for dwarf galaxy formation. This will alleviate some of the unsolved small-scale structure problems in the standard $\\Lambda$CDM cosmology.

Quinn E. Minor; Manoj Kaplinghat

2014-11-03T23:59:59.000Z

205

THE HYPOTHETICAL EFFECTS ON VADOSE ZONE & GROUNDWATER CONTAMINATION BY FIRE SUPPRESSION OF HANFORD SITE BUILDINGS AWAITING DECOMMISSIONING  

SciTech Connect (OSTI)

Numerical modeling was used to assess the effects of nearby contamination of hypothetical fire-suppression activities. The modeling focused on the 333 Building as being representative of a ''worst case'' situation in deactivated buildings at the Hanford Nuclear Site in Washington State. For purposes of the analysis, the fire-suppression sprinkler systems of these buildings were assumed to have been deactivated, requiring that the hypothetical fires be extinguished using water supplied by nearby fire hydrants. The amount of water specified by Fire-Protection personnel as needed to extinguish a hypothetical fire was specified as 1,500 gpm for 2 hours, for a total of 180,000 gallons or about 681 m{sup 3}.

DAVIS, J.D.

2005-03-18T23:59:59.000Z

206

Background Suppression Using Pulse Shape Analysis with a BEGe Detector for Neutrinoless Double Beta Decay Search with GERDA  

SciTech Connect (OSTI)

A pulse shape analysis for distinguishing between double beta decay-like interactions and multiple-scattered photons was performed for the first time using a BEGe-type detector. This discrimination method is included in the research and development for the second phase of the GERDA experiment, since active background suppression techniques are necessary to reach sensitivity for the {sup 76}Ge neutrinoless double beta decay half life of >10{sup 26} years. A suppression of backgrounds in the energy region of interest around the {sup 76}Ge Q{sub {beta}}{sub {beta}} = 2039 keV is demonstrated, with (0.93{+-}0.08)% survival probability for events from {sup 60}Co, (21{+-}3)% for {sup 226}Ra, and (40{+-}2)% for {sup 228}Th. This performance is achieved with (89{+-}1)% acceptance of {sup 228}Th double escape events, which are analogous to double beta decay.

Budjas, Dusan; Schoenert, Stefan [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Chkvorets, Oleg [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Department of Physics, Laurentian University, Ramsey Lake Road, P3E 2C6 Sudbury, Ontario (Canada)

2009-12-17T23:59:59.000Z

207

Search for CP violation in singly Cabibbo suppressed four-body D decays  

SciTech Connect (OSTI)

We search for CP violation in a sample of 4.7 x 10{sup 4} singly Cabibbo suppressed D{sup 0} {yields} K{sup +} K{sup -} {pi}{sup +}{pi}{sup -} decays and 1.8(2.6) x 10{sup 4} D{sub (s)}{sup +} {yields} K{sub S}{sup 0} K{sup +} {pi}{sup +} {pi}{sup -} decays. CP violation is searched for in the difference between the T-odd asymmetries, obtained using triple product correlations, measured for D and {bar D} decays. The measured CP violation parameters are A{sub T}(D{sup 0}) = (1.0 {+-} 5.1(stat) {+-} 4.4(syst)) x 10{sup -3}, A{sub T}(D{sup +}) = (-11.96 {+-} 10.04(stat) {+-} 4.81(syst)) x 10{sup -3} and A{sub T}(D{sub s}{sup +}) = (-13.57 {+-} 7.67(stat) {+-} 4.82(syst)) x 10{sup -3}. This search for CP violation showed that the T-odd correlations are a powerful tool to measure the CP violating observable A{sub T}. The relative simplicity of an analysis based on T-odd correlations and the high quality results that can be obtained, allow to consider this tool as fundamental to search for CP violation in four-body decays. Even if the CP violation has not been found, excluding any New Physics effect to the sensitivity of about 0.5%, it is still worth to search for CP violation in D decays. The high statistics that can be obtained at the LHC or by the proposed high luminosity B-factories, make this topic to be considered in high consideration by experiments such as LHCb, SuperB or SuperBelle. The results outlined in this thesis strongly suggest to include a similar analysis into the Physics program of these experiments.

Martinelli, Maurizio; /Bari U.

2011-06-22T23:59:59.000Z

208

Inflation that runs naturally: Gravitational waves and suppression of power at large and small scales  

E-Print Network [OSTI]

We point out three correlated predictions of the axion monodromy inflation model: large amplitude of gravitational waves, suppression of power on horizon scales and on scales relevant for the formation of dwarf galaxies. While these predictions are likely generic to models with oscillations in the inflaton potential, the axion monodromy model naturally accommodates the required running spectral index through Planck-scale corrections to the inflaton potential. Applying this model to a combined data set of Planck, ACT, SPT, and WMAP low-$\\ell$ polarization cosmic microwave background (CMB) data, we find a best-fit tensor-to-scalar ratio $r_{0.05} = 0.07^{+0.05}_{-0.04}$ due to gravitational waves, which may have been observed by the BICEP2 experiment. Despite the contribution of gravitational waves, the total power on large scales (CMB power spectrum at low multipoles) is lower than the standard $\\Lambda$CDM cosmology with a power-law spectrum of initial perturbations and no gravitational waves, thus mitigating some of the tension on large scales. There is also a reduction in the matter power spectrum of 20-30\\% at scales corresponding to $k = 10~{\\rm Mpc}^{-1}$, which are relevant for dwarf galaxy formation. This will alleviate some of the unsolved small-scale structure problems in the standard $\\Lambda$CDM cosmology. The inferred matter power spectrum is also found to be consistent with recent Lyman-$\\alpha$ forest data, which is in tension with the Planck-favored $\\Lambda$CDM model with power-law primordial power spectrum.

Quinn E. Minor; Manoj Kaplinghat

2015-03-08T23:59:59.000Z

209

Effectiveness of two spraying systems for bollworm suppression, canopy penetration, and drift reduction in the Rolling Plains of Texas  

E-Print Network [OSTI]

. Walker, Jr. Two insecticide tests were conducted to compare the efficacy of suppression of bollworms and associated predators using a standard rate of pyrethroid applied through a conventional hydraulic-atomization spraying system and a controlled... found in either year between any of the CDA treatments and the conventional treatment, which used water as a carrier. Three studies were conducted comparing the penetration and deposition of the above treatments (excluding insecticide) in a canopy...

Robinson, John Robert Calvert

1986-01-01T23:59:59.000Z

210

Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of the Drosophila eye  

E-Print Network [OSTI]

Ã?Ã? Ã? Ã?Ã?Ã? Ã? Ã?Ã? Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of the Drosophila eye Sarah M. Oros, Meghana Tare, Madhuri Kango-Singh, Amit Singh PII: S0012-1606(10)00975-9 DOI: Oros, Sarah M., Tare, Meghana, Kango-Singh, Madhuri, Singh, Amit, Dorsal eye selector pannier (pnr

Kango-Singh, Madhuri

211

1 Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of 2 the Drosophila eye  

E-Print Network [OSTI]

1 Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of 2 the Drosophila eye 3 Sarah M. Oros a,b,1 , Meghana Tare b,1 , Madhuri Kango-Singh a,b,c , Amit Singh a,b,c, 4 xxxx 141516 17 Keywords: 18 Drosophila eye 19 Dorso-ventral eye patterning 20 Pannier 21 GATA-1 22

Singh, Amit

212

Transverse momentum and centrality dependence of high-ptnon-photonic electron suppression in Au+Au collisions at $\\sqrt{s_{NN}}$= 200 GeV  

SciTech Connect (OSTI)

The STAR collaboration at RHIC reports measurements of theinclusive yield of non-photonic electrons, which arise dominantly fromsemi-leptonic decays of heavy flavor mesons, over a broad range oftransverse momenta (1.2suppression in central AuAu collisions athigh pt, suggesting substantial heavy quark energy loss at RHIC. Thecentrality and \\pt dependences of the suppression provide constraints ontheoretical models of suppression.

Abelev, B.I.; Adams, J.; Aggarwal, M.M.; Ahammed, Z.; Amonett,J.; Anderson, B.D.; Anderson, M.; Arkhipkin, D.; Averichev, G.S.; Bai,Y.; Balewski, J.; Barannikova, O.; Barnby, L.S.; Baudot, J.; Bekele, S.; Belaga, V.V.; Bellingeri-Laurikainen, A.; Bellwied, R.; Benedosso, F.; Bhardwaj, S.; Bhasin, A.; Bhati, A.K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Bland, L.C.; Blyth, S.-L.; Bonner, B.E.; Botje, M.; Bouchet, J.; Brandin, A.V.; Bravar, A.; Bystersky, M.; Cadman, R.V.; Cai,X.Z.; Caines, H.; Calderon de la Barca Sanchez, M.; Castillo, J.; Catu,O.; Cebra, D.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen,H.F.; Chen, J.H.; Cheng, J.; Cherney, M.; Chikanian, A.; Christie, W.; Coffin, J.P.; Cormier, T.M.; Cosentino, M.R.; Cramer, J.G.; Crawford,H.J.; Das, D.; Das, S.; Daugherity, M.; de Moura, M.M.; Dedovich, T.G.; DePhillips, M.; Derevschikov, A.A.; Didenko, L.; Dietel, T.; Djawotho,P.; Dogra, S.M.; Dong, W.J.; Dong, X.; Draper, J.E.; Du, F.; Dunin, V.B.; Dunlop, J.C.; Dutta Mazumdar, M.R.; Eckardt, V.; Edwards, W.R.; Efimov,L.G.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Filimonov, K.; Filip, P.; Finch,E.; Fine, V.; Fisyak, Y.; Fu, J.; Gagliardi, C.A.; Gaillard, L.; Ganti,M.S.; Ghazikhanian, V.; Ghosh, P.; Gonzalez, J.S.; Gorbunov, Y.G.; Gos,H.; Grebenyuk, O.; Grosnick, D.; Guertin, S.M.; Guimaraes, K.S.F.F.; Guo,Y.; Gupta, N.; Gutierrez, T.D.; Haag, B.; Hallman, T.J.; Hamed, A.; Harris, J.W.; He, W.; Heinz, M.; Henry, T.W.; Hepplemann, S.; Hippolyte,B.; Hirsch, A.; Hjort, E.; Hoffman, A.M.; Hoffmann, G.W.; Horner, M.J.; Huang, H.Z.; Huang, S.L.; Hughes, E.W.; Humanic, T.J.; Igo, G.; Jacobs,P.; Jacobs, W.W.; Jakl, P.; Jia, F.; Jiang, H.; Jones, P.G.; Judd, E.G.; Kabana, S.; Kang, K.; Kapitan, J.; Kaplan, M.; Keane, D.; Kechechyan, A.; Khodyrev, V.Yu.; Kim, B.C.; Kiryluk, J.; Kisiel, A.; Kislov, E.M.; Klein,S.R.; Kocoloski, A.; Koetke, D.D.; et al.

2006-07-11T23:59:59.000Z

213

Green tea polyphenol epigallocatechin-3-gallate suppresses melanoma growth by inhibiting inflammasome and IL-1{beta} secretion  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer EGCG inhibits melanoma cell growth at physiological doses (0.1-1 {mu}M). Black-Right-Pointing-Pointer EGCG inhibits melanoma cell growth via inflammasomes and IL-1{beta} suppression. Black-Right-Pointing-Pointer Inflammasomes and IL-1{beta} could be potential targets for future melanoma therapeutics. -- Abstract: Epigallocatechin-3-gallate (EGCG), the major polyphenolic component of green tea, has been demonstrated to possess anti-inflammatory, antioxidant, anti-mutagenic and anti-carcinogenic properties. The anti-melanoma effect of EGCG has been previously suggested, but no clear mechanism of action has been established. In this study, we demonstrated that EGCG inhibits melanoma cell growth at physiological doses (0.1-1 {mu}M). In the search for mechanisms of EGCG-mediated melanoma cell suppression, we found that NF-{kappa}B was inhibited, and that reduced NF-{kappa}B activity was associated with decreased IL-1{beta} secretion from melanoma cells. Since inflammasomes are involved in IL-1{beta} secretion, we investigated whether IL-1{beta} suppression was mediated by inflammasomes, and found that EGCG treatment led to downregulation of the inflammasome component, NLRP1, and reduced caspase-1 activation. Furthermore, silencing the expression of NLRP1 abolished EGCG-induced inhibition of tumor cell proliferation both in vitro and in vivo, suggesting a key role of inflammasomes in EGCG efficacy. This paper provides a novel mechanism for EGCG-induced melanoma inhibition: inflammasome downregulation {yields} decreased IL-1{beta} secretion {yields} decreased NF-{kappa}B activities {yields} decreased cell growth. In addition, it suggests inflammasomes and IL-1{beta} could be potential targets for future melanoma therapeutics.

Ellis, Lixia Z.; Liu, Weimin; Luo, Yuchun; Okamoto, Miyako; Qu, Dovina; Dunn, Jeffrey H. [Department of Dermatology, University of Colorado School of Medicine, Aurora, CO 80045 (United States)] [Department of Dermatology, University of Colorado School of Medicine, Aurora, CO 80045 (United States); Fujita, Mayumi, E-mail: mayumi.fujita@ucdenver.edu [Department of Dermatology, University of Colorado School of Medicine, Aurora, CO 80045 (United States) [Department of Dermatology, University of Colorado School of Medicine, Aurora, CO 80045 (United States); Denver Veterans Affairs Medical Center, Denver, CO 80220 (United States)

2011-10-28T23:59:59.000Z

214

Evidence of Magnetic Breakdown on the Defects With Thermally Suppressed Critical Field in High Gradient SRF Cavities  

SciTech Connect (OSTI)

At SRF 2011 we presented the study of quenches in high gradient SRF cavities with dual mode excitation technique. The data differed from measurements done in 80's that indicated thermal breakdown nature of quenches in SRF cavities. In this contribution we present analysis of the data that indicates that our recent data for high gradient quenches is consistent with the magnetic breakdown on the defects with thermally suppressed critical field. From the parametric fits derived within the model we estimate the critical breakdown fields.

Eremeev, Grigory [JLAB; Palczewski, Ari [JLAB

2013-09-01T23:59:59.000Z

215

Interaction of nucleus and plastome in sunflower. III. Suppression of phenotypic expression of plastid mutation by alien nucleus  

SciTech Connect (OSTI)

Four plastome mutations of type chlorina were crossed as female parents with variety Mayak. It was demonstrated that a three-phases hybridization led to the loss of chlorophyll defect in F/sub 1/. The suppression of plastic mutation is controlled by a single dominant gene. Four viable plastid mutants were used in the study-en: chlorina-1 (1-24), en:chlorina-3 (1-138), en:chlorina-5 (2-25), and en:chlorina-7 (2-43).

Beletskii, Yu.D.; Razoriteleva, E.K.

1988-11-01T23:59:59.000Z

216

Suppression of the thermal hysteresis in magnetocaloric MnAs thin film by highly charged ion bombardment  

SciTech Connect (OSTI)

We present the investigation on the modifications of structural and magnetic properties of MnAs thin film epitaxially grown on GaAs induced by slow highly charged ions bombardment under well-controlled conditions. The ion-induced defects facilitate the nucleation of one phase with respect to the other in the first-order magneto-structural MnAs transition, with a consequent suppression of thermal hysteresis without any significant perturbation on the other structural and magnetic properties. In particular, the irradiated film keeps the giant magnetocaloric effect at room temperature opening new perspective on magnetic refrigeration technology for everyday use.

Trassinelli, M., E-mail: martino.trassinelli@insp.jussieu.fr; Marangolo, M.; Eddrief, M.; Etgens, V. H.; Gafton, V.; Hidki, S.; Lacaze, E.; Lamour, E.; Prigent, C.; Rozet, J.-P.; Steydli, S.; Zheng, Y.; Vernhet, D. [CNRS, UMR 7588, Institut des NanoSciences de Paris (INSP), F-75005 Paris (France); Sorbonne Universités, UPMC Univ. Paris 06, UMR 7588, INSP, F-75005 Paris (France)

2014-02-24T23:59:59.000Z

217

Observation of suppression of light scattering induced by dipole-dipole interactions in a cold atomic ensemble  

E-Print Network [OSTI]

We study the emergence of collective scattering in the presence of dipole-dipole interactions when we illuminate a cold cloud of rubidium atoms with a near-resonant and weak intensity laser. The size of the atomic sample is comparable to the wavelength of light. When we gradually increase the atom number from 1 to 450, we observe a broadening of the line, a small red shift and, consistently with these, a strong suppression of the scattered light with respect to the noninteracting atom case. Numerical simulations, which include the internal atomic level structure, agree with the data.

J. Pellegrino; R. Bourgain; S. Jennewein; Y. R. P. Sortais; S. D. Jenkins; J. Ruostekoski; A. Browaeys

2014-10-08T23:59:59.000Z

218

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 = 0.79 +/- 0.24 (stat.) +/- 0.03 (sys.) +/- 0.10 (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=0.49 +/- 0.1 (stat.) +/- 0.02 (sys.) +/- 0.06 (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.

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

2015-01-21T23:59:59.000Z

219

Suppression of interfacial reaction for HfO{sub 2} on silicon by pre-CF{sub 4} plasma treatment  

SciTech Connect (OSTI)

In this letter, the effects of pre-CF{sub 4} plasma treatment on Si for sputtered HfO{sub 2} gate dielectrics are investigated. The significant fluorine was incorporated at the HfO{sub 2}/Si substrate interface for a sample with the CF{sub 4} plasma pretreatment. The Hf silicide was suppressed and Hf-F bonding was observed for the CF{sub 4} plasma pretreated sample. Compared with the as-deposited sample, the effective oxide thickness was much reduced for the pre-CF{sub 4} plasma treated sample due to the elimination of the interfacial layer between HfO{sub 2} and Si substrate. These improved characteristics of the HfO{sub 2} gate dielectrics can be explained in terms of the fluorine atoms blocking oxygen diffusion through the HfO{sub 2} film into the Si substrate.

Lai, C.S.; Wu, W.C.; Chao, T.S.; Chen, J.H.; Wang, J.C.; Tay, L.-L.; Rowell, Nelson [Department of Electronic Engineering, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan 333, Taiwan (China); Department of Electronic Physics, National Chiao Tung University, 1001 Ta Hsueh Rd., Hsinchu 300, Taiwan (China); Department of Electronics Engineering, National Chiao Tung University, 1001 Ta Hsueh Rd., Hsinchu 300, Taiwan (China); Nanya Technology Corporation, Hwa-Ya Technology Park, 669 Fu-Hsing 3rd Rd., Kueishan, Taoyuan 338, Taiwan (China); Institute for Microstructural Sciences, National Research Council of Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6 (Canada)

2006-08-14T23:59:59.000Z

220

Suppression of infrared instability in trans-sonic flows by condensation of zero-frequency short wave length phonons  

E-Print Network [OSTI]

We analyze the peculiar infrared instability that characterizes stationary inhomogeneous flows when their velocity crosses the sound speed by decreasing values. For definiteness, we work in the context of one dimensional atomic Bose condensates. These flows are unstable under ultra low real frequency perturbations because of the unbounded mode amplification near the sonic horizon. This results in a condensation of low frequency phonons which produces a spatially structured flow in the supersonic domain. Numerical simulations reveal that this zero-frequency undulation suppresses the instability when its spatial extension is infinite, and when its phase is near that of a "shadow soliton" solution attached to the sonic horizon. These phenomena are akin to the condensation of rotons in flowing superfluid helium-4 when exceeding the Landau velocity. They also pertain to shallow water waves propagating on transcritical flows.

Xavier Busch; Florent Michel; Renaud Parentani

2014-11-28T23:59:59.000Z

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221

Suppression of Faraday waves in a Bose-Einstein condensate in the presence of an optical lattice  

SciTech Connect (OSTI)

We study the formation of Faraday waves in an elongated Bose-Einstein condensate in the presence of a one-dimensional optical lattice. The waves are parametrically excited by modulating the radial confinement of the condensate close to a transverse breathing mode of the system. For very shallow optical lattices, phonons with a well-defined wave vector propagate along the condensate, as in the absence of the lattice, and we observe the formation of a Faraday pattern. We find that by increasing the potential depth the local sound velocity decreases, and when it equals the condensate local phase velocity, the condensate develops an incoherent superposition of several modes and the parametric excitation of Faraday waves is suppressed.

Capuzzi, Pablo [Departamento de Fisica, FCEN Universidad de Buenos Aires, Ciudad Universitaria, Pab. I C1428EGA Buenos Aires (Argentina); Instituto de Fisica de Buenos Aires-CONICET (Argentina); Gattobigio, Mario; Vignolo, Patrizia [Universite de Nice-Sophia Antipolis, Institut non Lineaire de Nice, CNRS, 1361 route des Lucioles, F-06560 Valbonne (France)

2011-01-15T23:59:59.000Z

222

Electrowetting on liquid-infused film (EWOLF): Complete reversibility and controlled droplet oscillation suppression for fast optical imaging  

E-Print Network [OSTI]

Electrowetting on dielectric (EWOD) has emerged as a powerful tool to electrically manipulate tiny individual droplets in a controlled manner. Despite tremendous progress over the past two decades, current EWOD operating in ambient conditions has limited functionalities posing challenges for its applications, including electronic display, energy generation, and microfluidic systems. Here, we demonstrate a new paradigm of electrowetting on liquid-infused film (EWOLF) that allows for complete reversibility and tunable transient response simultaneously. We determine that these functionalities in EWOLF are attributed to its novel configuration, which allows for the formation of viscous liquid-liquid interfaces as well as additional wetting ridges, thereby suppressing the contact line pinning and severe droplet oscillation encountered in the conventional EWOD. Finally, by harnessing these functionalities demonstrated in EWOLF, we also explore its application as liquid lens for fast optical focusing.

Hao, Chonglei; Chen, Xuemei; He, Yuncheng; Li, Qiusheng; Li, K Y; Wang, Zuankai

2014-01-01T23:59:59.000Z

223

Narrow-band injection seeding of a terahertz frequency quantum cascade laser: Selection and suppression of longitudinal modes  

SciTech Connect (OSTI)

A periodically poled lithium niobate (PPLN) crystal with multiple poling periods is used to generate tunable narrow-bandwidth THz pulses for injection seeding a quantum cascade laser (QCL). We demonstrate that longitudinal modes of the quantum cascade laser close to the gain maximum can be selected or suppressed according to the seed spectrum. The QCL emission spectra obtained by electro-optic sampling from the quantum cascade laser, in the most favorable case, shows high selectivity and amplification of the longitudinal modes that overlap the frequency of the narrow-band seed. Proper selection of the narrow-band THz seed from the PPLN crystal discretely tunes the longitudinal mode emission of the quantum cascade laser. Moreover, the THz wave build-up within the laser cavity is studied as a function of the round-trip time. When the seed frequency is outside the maximum of the gain spectrum the laser emission shifts to the preferential longitudinal mode.

Nong, Hanond, E-mail: Nong.Hanond@rub.de; Markmann, Sergej; Hekmat, Negar; Jukam, Nathan, E-mail: Nathan.Jukam@rub.de [Arbeitsgruppe Terahertz Spektroskopie und Technologie, Ruhr-Universität Bochum, Bochum 44780 (Germany); Pal, Shovon [Arbeitsgruppe Terahertz Spektroskopie und Technologie, Ruhr-Universität Bochum, Bochum 44780 (Germany); Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, Bochum 44780 (Germany); Mohandas, Reshma A.; Dean, Paul; Li, Lianhe; Linfield, Edmund H.; Giles Davies, A. [School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT (United Kingdom); Wieck, Andreas D. [Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, Bochum 44780 (Germany)

2014-09-15T23:59:59.000Z

224

Centrality dependence of high $p_T$ suppression in Au+Au collisions suggest quark matter formation  

E-Print Network [OSTI]

In a pQCD-based model, we have analyzed the STAR data on the high $p_T$ suppression of charged hadrons, in Au+Au collisions at $\\sqrt{s}$=200 GeV. In the jet quenching or the energy loss picture, $p_T$ spectra of charged hadrons as well as the $p_T$ dependence of nuclear modification factor, in all the centrality ranges, are well explained, with nearly a constant relative energy loss, $\\Delta E/E=0.56\\pm 0.03$. Centrality independence of relative energy loss indicate that the matter produced in central and in peripheral collisions are different, otherwise relative energy loss would have shown strong centrality dependence. Qualitatively, centrality independence of relative energy loss can be understood, if in central Au+Au collisions deconfined matter is produced and the matter remain confined in peripheral collisions.

A. K. Chaudhuri

2004-05-12T23:59:59.000Z

225

Suppression of infrared instability in trans-sonic flows by condensation of zero-frequency short wave length phonons  

E-Print Network [OSTI]

We analyze the peculiar infrared instability that characterizes stationary inhomogeneous flows when their velocity crosses the sound speed by decreasing values. For definiteness, we work in the context of one dimensional atomic Bose condensates. These flows are unstable under ultra low real frequency perturbations because of the unbounded mode amplification near the sonic horizon. This results in a condensation of low frequency phonons which produces a spatially structured flow in the supersonic domain. Numerical simulations reveal that this zero-frequency undulation suppresses the instability when its spatial extension is infinite, and when its phase is near that of a "shadow soliton" solution attached to the sonic horizon. These phenomena are akin to the condensation of rotons in flowing superfluid helium-4 when exceeding the Landau velocity. They also pertain to shallow water waves propagating on transcritical flows.

Xavier Busch; Florent Michel; Renaud Parentani

2015-02-06T23:59:59.000Z

226

Blinking suppression of CdTe quantum dots on epitaxial graphene and the analysis with Marcus electron transfer  

SciTech Connect (OSTI)

We have prepared epitaxial graphene by a Si sublimation method from 4H-SiC. Single-particle spectroscopy of CdTe quantum dots (QDs) on epitaxial graphene covered with polyvinylpyrrolidone (PVP) or polyethylene glycol (PEG) showed the suppression of luminescence blinking and ?10 times decreased luminescence intensity as compared with those on a glass. The electronic coupling constant, H{sub 01}, between CdTe QDs and graphene was calculated to be (3.3?±?0.4)?×?10{sup 2?}cm{sup ?1} in PVP and (3.7?±?0.8)?×?10{sup 2?}cm{sup ?1} in PEG based on Marcus theory of electron transfer and Tang-Marcus model of blinking with statistical distribution.

Hirose, Takuya; Tamai, Naoto, E-mail: tamai@kwansei.ac.jp [Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan); Kutsuma, Yasunori; Kurita, Atsusi; Kaneko, Tadaaki [Department of Physics, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan)

2014-08-25T23:59:59.000Z

227

Suppression of high-order-harmonic intensities observed in aligned CO{sub 2} molecules with 1300-nm and 800-nm pulses  

SciTech Connect (OSTI)

High-order-harmonic generation from aligned N{sub 2}, O{sub 2}, and CO{sub 2} molecules is investigated by 1300-nm and 800-nm pulses. The harmonic intensities of 1300-nm pulses from aligned molecules show harmonic photon energy dependence similar to those of 800-nm pulses. Suppression of harmonic intensity from aligned CO{sub 2} molecules is observed for both 1300- and 800-nm pulses over the same harmonic photon energy range. As the dominant mechanism for the harmonic intensity suppression from aligned CO{sub 2} molecules, the present results support the two-center interference picture rather than the dynamical interference picture.

Kato, Kosaku; Minemoto, Shinichirou; Sakai, Hirofumi [Department of Physics, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

2011-08-15T23:59:59.000Z

228

Ascorbic acid suppresses endotoxemia and NF-?B signaling cascade in alcoholic liver fibrosis in guinea pigs: A mechanistic approach  

SciTech Connect (OSTI)

Alcohol consumption increases the small intestinal bacterial overgrowth (SIBO) and intestinal permeability of endotoxin. The endotoxin mediated inflammatory signaling plays a major role in alcoholic liver fibrosis. We evaluated the effect of ascorbic acid (AA), silymarin and alcohol abstention on the alcohol induced endotoxemia and NF-?B activation cascade pathway in guinea pigs (Cavia porcellus). Guinea pigs were administered ethanol at a daily dose of 4 g/kg b.wt for 90 days. After 90 days, ethanol administration was stopped. The ethanol treated animals were divided into abstention, silymarin (250 mg/kg b.wt) and AA (250 mg/kg b.wt) supplemented groups and maintained for 30 days. The SIBO, intestinal permeability and endotoxin were significantly increased in the ethanol group. The mRNA expressions of intestinal proteins claudin, occludin and zona occludens-1 were significantly decreased in ethanol group. The mRNA levels of inflammatory receptors, activity of IKK? and the protein expressions of phospho-I?B?, NF-?B, TNF-?, TGF-?{sub 1} and IL-6 were also altered in ethanol group. The expressions of fibrosis markers ?-SMA, ?{sub 1} (I) collagen and sirius red staining in the liver revealed the induction of fibrosis. But the supplementation of AA could induce greater reduction of ethanol induced SIBO, intestinal barrier defects, NF-?B activation and liver fibrosis than silymarin. The possible mechanism may be the inhibitory effect of AA on SIBO, intestinal barrier defect and IKK?, which decreased the activation of NF-?B and synthesis of cytokines. This might have led to suppression of HSCs activation and liver fibrosis. - Highlights: • Alcohol increases intestinal bacterial overgrowth and permeability of endotoxin. • Endotoxin mediated inflammation plays a major role in alcoholic liver fibrosis. • Ascorbic acid reduces endotoxemia, NF-?B activation and proinflammatory cytokines. • AA's action is by inhibition of SIBO, IKK? and alteration of intestinal permeability. • This might have led to suppression of HSCs activation and liver fibrosis.

Abhilash, P.A.; Harikrishnan, R.; Indira, M., E-mail: indiramadambath@gmail.com

2014-01-15T23:59:59.000Z

229

Suppression of low-temperature ferromagnetic phase in ultrathin FeRh G. C. Han, J. J. Qiu, Q. J. Yap, P. Luo, T. Kanbe et al.  

E-Print Network [OSTI]

. By depositing FeRh films at an extremely low pressure of 0.057 Pa, a residual magnetization as small as 13.5 emu the ratio of the residual magnetization to the maximum magnetization keeps nearly unchanged for the film. This residual magnetization was suppressed by slightly increasing the Rh atomic content in 10 nm thick Fe

Laughlin, David E.

230

Scaling and Suppression of Anomalous Heating in Ion Traps L. Deslauriers, S. Olmschenk, D. Stick, W. K. Hensinger, J. Sterk, and C. Monroe*  

E-Print Network [OSTI]

information algorithms [8]. An important source of decoherence in these systems has proven to be the heating be related to parasitic electrical noise observed in many condensed-matter quantum systems [13Scaling and Suppression of Anomalous Heating in Ion Traps L. Deslauriers, S. Olmschenk, D. Stick, W

Hensinger, Winfried

231

396 IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, VOL. 3, NO. 5, SEPTEMBER 1995 Two-Tone Suppression in a Cochlear Model  

E-Print Network [OSTI]

in that phase-locked neural firing patterns occur over frequency regions corresponding to each of the speech (shaded area enclosed by solid circles) and the excitation area of the tuning curve (enclosed by open is at 400 Hz. B. Suppressiori Contours Two-tone suppression was determined by exciting the MTL cochlear

Allen, Jont

232

Charge-transfer-induced suppression of galvanic replacement and synthesis of (Au-Ag)-Au double shell nanoparticles for highly uniform, robust and sensitive bioprobes  

SciTech Connect (OSTI)

The synthesis of double shell (Au-Ag)-Au nanoparticles is accomplished through suppression of the galvanic replacement reaction caused by an electron transfer phenomenon. The resulting nanoparticles are monodisperse with a thin and uniform second Au shell. These particles are ultimately expected to lead to sensitive probes for biomolecular sensing and diagnostics.

Dao Thi Ngoc Anh; Singh, Prerna; Shankar, Cheshta; Mott, Derrick; Maenosono, Shinya [Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292 (Japan)

2011-08-15T23:59:59.000Z

233

7736 Chem. Commun., 2010, 46, 77367738 This journal is c The Royal Society of Chemistry 2010 Suppression of spinspin coupling in nitroxyl biradicals by  

E-Print Network [OSTI]

and nuclear spins hANi = (Axx + Ayy + Azz)/3 which is a measure of the environmental polarity steric effect, completely suppresses spin exchange between two adjacent radical centers in a biradical. Recently there has been a renaissance in the application of dynamic nuclear polarization (DNP) as a general

Turro, Nicholas J.

234

Impaired NFAT and NF?B activation are involved in suppression of CD40 ligand expression by ?{sup 9}-tetrahydrocannabinol in human CD4{sup +} T cells  

SciTech Connect (OSTI)

We have previously reported that ?{sup 9}-tetrahydrocannabinol (?{sup 9}-THC), the main psychoactive cannabinoid in marijuana, suppresses CD40 ligand (CD40L) expression by activated mouse CD4{sup +} T cells. CD40L is involved in pathogenesis of many autoimmune and inflammatory diseases. In the present study, we investigated the molecular mechanism of ?{sup 9}-THC-mediated suppression of CD40L expression using peripheral blood human T cells. Pretreatment with ?{sup 9}-THC attenuated CD40L expression in human CD4{sup +} T cells activated by anti-CD3/CD28 at both the protein and mRNA level, as determined by flow cytometry and quantitative real-time PCR, respectively. Electrophoretic mobility shift assays revealed that ?{sup 9}-THC suppressed the DNA-binding activity of both NFAT and NF?B to their respective response elements within the CD40L promoter. An assessment of the effect of ?{sup 9}-THC on proximal T cell-receptor (TCR) signaling induced by anti-CD3/CD28 showed significant impairment in the rise of intracellular calcium, but no significant effect on the phosphorylation of ZAP70, PLC?1/2, Akt, and GSK3?. Collectively, these findings identify perturbation of the calcium-NFAT and NF?B signaling cascade as a key mechanistic event by which ?{sup 9}-THC suppresses human T cell function. - Highlights: • ?{sup 9}-THC attenuated CD40L expression in activated human CD4+ T cells. • ?{sup 9}-THC suppressed DNA-binding activity of NFAT and NF?B. • ?{sup 9}-THC impaired elevation of intracellular Ca2+. • ?{sup 9}-THC did not affect phosphorylation of ZAP70, PLC?1/2, Akt, and GSK3?.

Ngaotepprutaram, Thitirat [Department of Pharmacology and Toxicology, Michigan State University (United States); Center for Integrative Toxicology, Michigan State University (United States); Kaplan, Barbara L.F. [Department of Pharmacology and Toxicology, Michigan State University (United States); Center for Integrative Toxicology, Michigan State University (United States); Neuroscience Program, Michigan State University (United States); Kaminski, Norbert E., E-mail: kamins11@msu.edu [Department of Pharmacology and Toxicology, Michigan State University (United States); Center for Integrative Toxicology, Michigan State University (United States)

2013-11-15T23:59:59.000Z

235

Chemokines, macrophage inflammatory protein-2 and stromal cell-derived factor-1{alpha}, suppress amyloid {beta}-induced neurotoxicity  

SciTech Connect (OSTI)

Alzheimer's disease (AD) is characterized by a progressive cognitive decline and accumulation of neurotoxic oligomeric peptides amyloid-{beta} (A{beta}). Although the molecular events are not entirely known, it has become evident that inflammation, environmental and other risk factors may play a causal, disruptive and/or protective role in the development of AD. The present study investigated the ability of the chemokines, macrophage inflammatory protein-2 (MIP-2) and stromal cell-derived factor-1{alpha} (SDF-1{alpha}), the respective ligands for chemokine receptors CXCR2 and CXCR4, to suppress A{beta}-induced neurotoxicity in vitro and in vivo. Pretreatment with MIP-2 or SDF-1{alpha} significantly protected neurons from A{beta}-induced dendritic regression and apoptosis in vitro through activation of Akt, ERK1/2 and maintenance of metalloproteinase ADAM17 especially with SDF-1{alpha}. Intra-cerebroventricular (ICV) injection of A{beta} led to reduction in dendritic length and spine density of pyramidal neurons in the CA1 area of the hippocampus and increased oxidative damage 24 h following the exposure. The A{beta}-induced morphometric changes of neurons and increase in biomarkers of oxidative damage, F{sub 2}-isoprostanes, were significantly inhibited by pretreatment with the chemokines MIP-2 or SDF-1{alpha}. Additionally, MIP-2 or SDF-1{alpha} was able to suppress the aberrant mislocalization of p21-activated kinase (PAK), one of the proteins involved in the maintenance of dendritic spines. Furthermore, MIP-2 also protected neurons against A{beta} neurotoxicity in CXCR2-/- mice, potentially through observed up regulation of CXCR1 mRNA. Understanding the neuroprotective potential of chemokines is crucial in defining the role for their employment during the early stages of neurodegeneration. -- Research highlights: Black-Right-Pointing-Pointer Neuroprotective ability of the chemokines MIP2 and CXCL12 against A{beta} toxicity. Black-Right-Pointing-Pointer MIP-2 or CXCL12 prevented dendritic regression and apoptosis in vitro. Black-Right-Pointing-Pointer Neuroprotection through activation of Akt, ERK1/2 and maintenance of ADAM17. Black-Right-Pointing-Pointer Neuroprotection of hippocampal pyramidal neurons in vivo by MIP-2 or CXCL12. Black-Right-Pointing-Pointer MIP-2 or CXCL12 prevent elevation of F2-Isoprostanes against A{beta} treatment.

Raman, Dayanidhi; Milatovic, Snjezana-Zaja [Department of Cancer Biology, Vanderbilt University, School of Medicine, Nashville, TN 37232 (United States)] [Department of Cancer Biology, Vanderbilt University, School of Medicine, Nashville, TN 37232 (United States); Milatovic, Dejan [Department of Pediatrics/Pediatric Toxicology, Vanderbilt University, School of Medicine, Nashville, TN 37232 (United States)] [Department of Pediatrics/Pediatric Toxicology, Vanderbilt University, School of Medicine, Nashville, TN 37232 (United States); Splittgerber, Ryan [Department of Cancer Biology, Vanderbilt University, School of Medicine, Nashville, TN 37232 (United States)] [Department of Cancer Biology, Vanderbilt University, School of Medicine, Nashville, TN 37232 (United States); Fan, Guo-Huang [Department of Neurobiology and Neurotoxicology, Meharry Medical College, Nashville, TN 37221 (United States)] [Department of Neurobiology and Neurotoxicology, Meharry Medical College, Nashville, TN 37221 (United States); Richmond, Ann, E-mail: ann.richmond@vanderbilt.edu [VA Medical Center, Nashville, TN 37232 (United States) [VA Medical Center, Nashville, TN 37232 (United States); Department of Cancer Biology, Vanderbilt University, School of Medicine, Nashville, TN 37232 (United States)

2011-11-15T23:59:59.000Z

236

Suppression of chaos at slow variables by rapidly mixing fast dynamics through linear energy-preserving coupling  

E-Print Network [OSTI]

Chaotic multiscale dynamical systems are common in many areas of science, one of the examples being the interaction of the low-frequency dynamics in the atmosphere with the fast turbulent weather dynamics. One of the key questions about chaotic multiscale systems is how the fast dynamics affects chaos at the slow variables, and, therefore, impacts uncertainty and predictability of the slow dynamics. Here we demonstrate that the linear slow-fast coupling with the total energy conservation property promotes the suppression of chaos at the slow variables through the rapid mixing at the fast variables, both theoretically and through numerical simulations. A suitable mathematical framework is developed, connecting the slow dynamics on the tangent subspaces to the infinite-time linear response of the mean state to a constant external forcing at the fast variables. Additionally, it is shown that the uncoupled dynamics for the slow variables may remain chaotic while the complete multiscale system loses chaos and becomes completely predictable at the slow variables through increasing chaos and turbulence at the fast variables. This result contradicts the common sense intuition, where, naturally, one would think that coupling a slow weakly chaotic system with another much faster and much stronger mixing system would result in general increase of chaos at the slow variables.

Rafail V. Abramov

2011-08-14T23:59:59.000Z

237

Development of electron reflection suppression materials for improved thermionic energy converter performance using thin film deposition techniques  

SciTech Connect (OSTI)

Nonideal electrode surfaces cause significant degree of electron reflection from collector during thermionic converter operation. The effect of the collector surface structure on the converter performance was assessed through the development of several electron reflection suppression materials using various thin film deposition techniques. The double-diode probe method was used to compare the J-V characteristics of converters with polished and modified collector surfaces for emitter temperature and cesium vapor pressure in the ranges of 900-2000 K and 0.02-1.5 torr, respectively. The coadsorption of cesium and oxygen with respective partial vapor pressures of {approx}1.27 torr and a few microtorrs reduced the emitter work function to a minimum value of 0.99 eV. It was found that the collector surfaces with matte black appearance such as platinum black, voided nickel from radio-frequency plasma sputtering, and etched electroless Ni-P with craterlike pore morphology exhibited much better performance compared with polished collector surface. For these thin films, the increase in the maximum output voltage was up to 2.0 eV. For optimum performance with minimum work function and maximum saturation emission current density, the emitter temperature was in the range of 1100-1500 K, depending on the collector surface structure. The use of these materials in cylindrical converter design and/or in combination with hybrid mode triode configuration holds great potential in low and medium scale power generators for commercial use.

Islam, Mohammad; Inal, Osman T.; Luke, James R. [Department of Materials and Metallurgical Engineering, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801 (United States); New Mexico Institute of Mining and Technology, Institute for Engineering Research and Applications (IERA) , 901 University Blvd. SE, Albuquerque, New Mexico 87106-4339 (United States)

2006-10-15T23:59:59.000Z

238

Suppression of electron magnetotunneling between parallel two-dimensional GaAs/InAs electron systems by the correlation interaction  

SciTech Connect (OSTI)

Magnetotunneling between two-dimensional GaAs/InAs electron systems in vertical resonant tunneling GaAs/InAs/AlAs heterostructures is studied. A new-type of singularity in the tunneling density of states, specifically a dip at the Fermi level, is found; this feature is drastically different from that observed previously for the case of tunneling between two-dimensional GaAs tunnel systems in terms of both the kind of functional dependence and the energy and temperature parameters. As before, this effect manifests itself in the suppression of resonant tunneling in a narrow range near zero bias voltage in a high magnetic field parallel to the current direction. Magnetic-field and temperature dependences of the effect's parameters are obtained; these dependences are compared with available theoretical and experimental data. The observed effect can be caused by a high degree of disorder in two-dimensional correlated electron systems as a result of the introduction of structurally imperfect strained InAs layers.

Khanin, Yu. N.; Vdovin, E. E., E-mail: vdov62@yandex.ru [Russian Academy of Sciences, Institute of Microelectronics Technology and High Purity Materials (Russian Federation); Makarovsky, O. [University of Nottingham, School of Physics and Astronomy (United Kingdom)] [University of Nottingham, School of Physics and Astronomy (United Kingdom); Henini, M. [University of Nottingham, School of Physics and Astronomy, Nottingham Nanotechnology and Nanoscience Center (United Kingdom)] [University of Nottingham, School of Physics and Astronomy, Nottingham Nanotechnology and Nanoscience Center (United Kingdom)

2013-09-15T23:59:59.000Z

239

Fate of Magnesium Chloride Brine Applied to Suppress Dust from Unpaved Roads at the INEEL Subsurface Disposal Area  

SciTech Connect (OSTI)

Between 1984 and 1993, MgCl2 brine was used to suppress dust on unpaved roads at a radioactive waste subsurface disposal area. Because Cl– might enhance corrosion of buried metals in the waste, we investigated the distribution and fate of Cl– in the vadose zone using pore water samples collected from suction lysimeters and soluble salt concentrations extracted from sediment samples. The Cl/Br mass ratio and the total dissolved Cl– concentration of pore water show that brine contamination occurs primarily within 13 m of treated roads, but can extend as much as 30 m laterally in near-surface sedimentary deposits. Within the deep vadose zone, which consists of interlayered basalt lava flows and sedimentary interbeds, brine has moved up to 110 m laterally. This lateral migration suggests formation of perched water and horizontal transport during periods of high recharge. In a few locations, brine migrated to depths of 67 m within 3 to 5 yr. Elevated Cl– concentrations were found to depths of 2 m in roadbed material. In drainage ditches along roads, where runoff accumulates and recharge of surface water is high, Cl– was flushed from the sediments in 3 to 4 yr. In areas of lower recharge, Cl– remained in the sediments after 5 yr. Vertical brine movement is directly related to surface recharge through sediments. The distribution of Cl– in pore water and sediments is consistent with estimates of vadose zone residence times and spatial distribution of surface water recharge from other investigations at the subsurface

Larry Hull; Carolyn Bishop

2004-02-01T23:59:59.000Z

240

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

SciTech Connect (OSTI)

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

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241

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

SciTech Connect (OSTI)

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

242

Measurements of $\\Lambda^+_c$ Branching Fractions of Cabibbo-Suppressed Decay Modes involving $\\Lambda$ and $\\Sigma^{0}$  

E-Print Network [OSTI]

We measure the branching ratios of the Cabibbo-suppressed decays $\\Lambda^+_c$ $\\to$ $\\Lambda$ $K^+$ and $\\Lambda^+_c$ $\\to$ $\\Sigma^{0}$ $K^+$ %(measured with improved accuracy). relative to the Cabibbo-favored decay modes $\\Lambda^+_c$ $\\to$ $\\Lambda$ $\\pi^+$ and $\\Lambda^+_c$ $\\to$ $\\Sigma^{0}$ $\\pi^+$ to be $ 0.044 \\pm 0.004 ~(\\textnormal{stat.})~ \\pm ~0.003 \\~(\\textnormal{syst.})$ and $ 0.039~ \\pm ~0.005 ~(\\textnormal{stat.})~ \\pm \\~0.003 ~(\\textnormal{syst.})$, respectively. We set an upper limit on the branching ratio at 90 % confidence level for $\\Lambda^+_c$ $\\to$ $\\Lambda$ $K^+ \\pi^+ \\pi^-$ to be $ 4.1 \\times ~10^{-2}$ relative to $\\Lambda^+_c$ $\\to$ $\\Lambda$ $\\pi^+$ and for $\\Lambda^+_c$ $\\to$ $\\Sigma^{0}$ $K^+ \\pi^+ \\pi^-$ to be $ 2.0 \\times ~10^{-2}$ relative to $\\Lambda^+_c$ $\\to$ $\\Sigma^{0}$ $\\pi^+$. We also measure the branching fraction for the Cabibbo-favored mode $\\Lambda^+_c$ $\\to$ $\\Sigma^{0}$ $\\pi^+$ relative to $\\Lambda^+_c$ $\\to$ $\\Lambda$ $\\pi^+$ to be $0.977~ \\pm ~0.015 ~(\\textnorm...

Aubert, B; Abrams, G S; Adye, T; Ahmed, M; Ahmed, S; Alam, M S; Albert, J; Aleksan, Roy; Allen, M T; Allison, J; Allmendinger, T; Altenburg, D; Andreassen, R; Andreotti, M; Angelini, C; Anulli, F; Arnaud, N; Aston, D; Azzolini, V; Baak, M; Back, J J; Baldini-Ferroli, R; Band, H R; Banerjee, S; Barate, R; Bard, D J; Barlow, N R; Barlow, R J; Barrett, M; Bartoldus, R; Batignani, G; Battaglia, M; Bauer, J M; Beck, T W; Behera, P K; Bellini, F; Benayoun, M; Benelli, G; Berger, N; Bernard, D; Berryhill, J W; Best, D; Bettarini, S; Bettoni, D; Bevan, A J; Bhimji, W; Bhuyan, B; Bianchi, F; Biasini, M; Biesiada, J; Blanc, F; Blaylock, G; Blinov, A E; Blinov, V E; Bloom, P C; Blount, N L; Bomben, M; Bondioli, M; Bonneaud, G R; Bosisio, L; Boutigny, D; Bowerman, D A; Boyarski, A M; Boyd, J T; Bozzi, C; Brandenburg, G; Brandt, T; Brau, J E; Breon, A B; Brose, J; Brown, C L; Brown, C M; Brown, D N; Bruinsma, M; Brunet, S; Bucci, F; Buchanan, C; Buchmüller, O L; Bugg, W; Bukin, A D; Bula, R; Bulten, H; Burchat, P R; Burke, J P; Button-Shafer, J; Buzzo, A; Bóna, M; Cahn, R N; Calabrese, R; Calcaterra, A; Calderini, G; Campagnari, C; Capra, R; Carpinelli, M; Cartaro, C; Cavallo, N; Cavoto, G; Cenci, R; Chai, X; Chaisanguanthum, K S; Chao, M; Charles, E; Charles, M J; Chauveau, J; Chavez, C A; Chen, A; Chen, C; Chen, E; Chen, J C; Chen, S; Chen, X; Cheng, B; Cheng, C H; Chia, Y M; Cibinetto, G; Clark, P J; Claus, R; Cochran, J; Coleman, J P; Contri, R; Convery, M R; Cossutti, F; Cottingham, W N; Couderc, F; Covarelli, R; Cowan, G; Cowan, R; Crawley, H B; Cremaldi, L; Cristinziani, M; Cunha, A; Curry, S; Côté, D; D'Orazio, A; Dahmes, B; Dallapiccola, C; Danielson, N; Dasu, S; Datta, M; Dauncey, P D; David, P; Davier, M; Davis, C L; Day, C T; De Groot, N; De Nardo, Gallieno; De Sangro, R; Del Buono, L; Del Re, D; Della Ricca, G; Di Lodovico, F; Di Marco, E; Dickopp, M; Dingfelder, J C; Dittongo, S; Dong, D; Dong, L; Dorfan, J; Druzhinin, V P; Dubitzky, R S; Dubois-Felsmann, G P; Dujmic, D; Dunwoodie, W M; Dvoretskii, A; Eckhart, E A; Eckmann, R; Edgar, C L; Edwards, A J; Egede, U; Eichenbaum, A M; Eigen, G; Eisner, A M; Elmer, P; Emery, S; Ernst, J A; Eschenburg, V; Eschrich, I; Eyges, V; Fabozzi, F; Faccini, R; Fan, S; Feltresi, E; Ferrarotto, F; Ferroni, F; Field, R C; Finocchiaro, G; Flacco, C J; Flack, R L; Flächer, H U; Flood, K T; Ford, K E; Ford, W T; Forster, I J; Forti, F; Fortin, D; Foulkes, S D; Franek, B; Frey, R; Fritsch, M; Fry, J R; Fulsom, B G; Gabathuler, E; Gaidot, A; Gaillard, J R; Galeazzi, F; Gallo, F; Gamba, D; Gamet, R; Gan, K K; Ganzhur, S F; Gary, J W; Gaspero, M; Gatto, C; George, K A; Gill, M S; Giorgi, M A; Giroux, X; Gladney, L; Glanzman, T; Godang, R; Goetzen, K; Golubev, V B; Gopal, G P; Gowdy, S J; Gradl, W; Graham, M T; Grancagnolo, S; Graugès-Pous, E; Graziani, G; Green, M G; Grenier, P; Gritsan, A V; Grosdidier, G; Groysman, Y; Guo, Q H; Hadavand, H K; Hadig, T; Haire, M; Halyo, V; Hamano, K; Hamel de Monchenault, G; Hamon, O; Harrison, P F; Harrison, T J; Hart, A J; Hartfiel, B L; Hast, C; Hauke, A; Hawkes, C M; Hearty, C; Held, T; Hertzbach, S S; Heusch, C A; Hill, E J; Hirschauer, J F; Hitlin, D G; Hodgkinson, M C; Hollar, J J; Hong, T M; Honscheid, K; Hopkins, D A; Hrynóva, T; Hufnagel, D; Hulsbergen, W D; Hutchcroft, D E; Höcker, A; Igonkina, O; Innes, W R; Izen, J M; Jackson, P D; Jackson, P S; Jacobsen, R G; Jawahery, A; Jessop, C P; John, M J J; Johnson, J R; Judd, D; Kadel, R W; Kadyk, J; Kagan, H; Karyotakis, Yu; Kass, R; Kelly, M P; Kelsey, M H; Kerth, L T; Khan, A; Kim, H; Kim, P; Kirkby, D; Kitayama, I; Klose, V; Knecht, N S; Koch, H; Kocian, M L; Koeneke, K; Kofler, R; Kolomensky, Yu G; Kovalskyi, D; Kowalewski, R V; Kozanecki, Witold; Kravchenko, E A; Kreisel, A; Krishnamurthy, M; Kroeger, R; Kroseberg, J; Kukartsev, G; Kutter, P E; Kyberd, P; La Vaissière, C de; Lacker, H M; Lae, C K; Lafferty, G D; Lanceri, L; Lange, D J; Langenegger, U; Lankford, A J; Latham, T E; Latour, E; Lau, Y P; Lazzaro, A; Le Diberder, F R; Lees, J P; Legendre, M; Leith, D W G S; Lepeltier, V; Leruste, P; Lewandowski, B; Li Gioi, L; Li, H; Li, X; Libby, J; Lista, L; Liu, R; Lo Vetere, M; LoSecco, J M; Lockman, W S; Lombardo, V; London, G W; Long, O; Lou, X C; Lu, M; Luitz, S; Lund, P; Luppi, E; Lusiani, A; Lutz, A M; Lynch, G; Lynch, H L; Lü, C; Lüth, V; MacFarlane, D B; Macri, M M; Mader, W F; Majewski, S A; Malcles, J; Mallik, U; Mancinelli, G; Mandelkern, M A; Marchiori, G; Margoni, M; Marks, J; Marsiske, H; Martínez-Vidal, F; Mattison, T S; Mayer, B; Mazur, M A; Mazzoni, M A; McKenna, J A; McMahon, T R; Meadows, B T; Mellado, B; Menges, W; Messner, R; Meyer, W T; Mihályi, A; Minamora, J S; Mir, L M; Mohanty, G B; Mohapatra, A K; Mommsen, R K; Monge, M R; Monorchio, D; Moore, T B; Morandin, M; Morgan, S E; Morganti, M; Morganti, S; Morii, M; Muheim, F

2007-01-01T23:59:59.000Z

243

Suppression of high transverse momentum D mesons in central Pb--Pb collisions at $\\sqrt{s_{NN}}=2.76$ TeV  

E-Print Network [OSTI]

The production of the prompt charm mesons $D^0$, $D^+$, $D^{*+}$, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at the LHC, at a centre-of-mass energy $\\sqrt{s_{NN}}=2.76$ TeV per nucleon--nucleon collision. The $\\pt$-differential production yields in the range $2suppression by a factor 3-4, for transverse momenta larger than 5 GeV/c in the 20% most central collisions. The suppression is reduced for peripheral collisions.

ALICE Collaboration; B. Abelev; J. Adam; D. Adamová; A. M. Adare; M. M. Aggarwal; G. Aglieri Rinella; A. G. Agocs; A. Agostinelli; S. Aguilar Salazar; Z. Ahammed; N. Ahmad; A. Ahmad Masoodi; S. U. Ahn; A. Akindinov; D. Aleksandrov; B. Alessandro; R. Alfaro Molina; A. Alici; A. Alkin; E. Almaráz Aviña; J. Alme; T. Alt; V. Altini; S. Altinpinar; I. Altsybeev; C. Andrei; A. Andronic; V. Anguelov; J. Anielski; C. Anson; T. Anticic; F. Antinori; P. Antonioli; L. Aphecetche; H. Appelshäuser; N. Arbor; S. Arcelli; A. Arend; N. Armesto; R. Arnaldi; T. Aronsson; I. C. Arsene; M. Arslandok; A. Asryan; A. Augustinus; R. Averbeck; T. C. Awes; J. Äystö; M. D. Azmi; M. Bach; A. Badalà; Y. W. Baek; R. Bailhache; R. Bala; R. Baldini Ferroli; A. Baldisseri; A. Baldit; F. Baltasar Dos Santos Pedrosa; J. Bán; R. C. Baral; R. Barbera; F. Barile; G. G. Barnaföldi; L. S. Barnby; V. Barret; J. Bartke; M. Basile; N. Bastid; S. Basu; B. Bathen; G. Batigne; B. Batyunya; C. Baumann; I. G. Bearden; H. Beck; I. Belikov; F. Bellini; R. Bellwied; E. Belmont-Moreno; G. Bencedi; S. Beole; I. Berceanu; A. Bercuci; Y. Berdnikov; D. Berenyi; D. Berzano; L. Betev; A. Bhasin; A. K. Bhati; J. Bhom; N. Bianchi; L. Bianchi; C. Bianchin; J. Bielcík; J. Bielcíková; A. Bilandzic; S. Bjelogrlic; F. Blanco; F. Blanco; D. Blau; C. Blume; M. Boccioli; N. Bock; A. Bogdanov; H. Bøggild; M. Bogolyubsky; L. Boldizsár; M. Bombara; J. Book; H. Borel; A. Borissov; S. Bose; F. Bossú; M. Botje; S. Böttger; B. Boyer; E. Braidot; P. Braun-Munzinger; M. Bregant; T. Breitner; T. A. Browning; M. Broz; R. Brun; E. Bruna; G. E. Bruno; D. Budnikov; H. Buesching; S. Bufalino; K. Bugaiev; O. Busch; Z. Buthelezi; D. Caballero Orduna; D. Caffarri; X. Cai; H. Caines; E. Calvo Villar; P. Camerini; V. Canoa Roman; G. Cara Romeo; W. Carena; F. Carena; N. Carlin Filho; F. Carminati; C. A. Carrillo Montoya; A. Casanova Díaz; J. Castillo Castellanos; J. F. Castillo Hernandez; E. A. R. Casula; V. Catanescu; C. Cavicchioli; C. Ceballos Sanchez; J. Cepila; P. Cerello; B. Chang; S. Chapeland; J. L. Charvet; S. Chattopadhyay; S. Chattopadhyay; I. Chawla; M. Cherney; C. Cheshkov; B. Cheynis; V. Chibante Barroso; D. D. Chinellato; P. Chochula; M. Chojnacki; S. Choudhury; P. Christakoglou; C. H. Christensen; P. Christiansen; T. Chujo; S. U. Chung; C. Cicalo; L. Cifarelli; F. Cindolo; J. Cleymans; F. Coccetti; F. Colamaria; D. Colella; G. Conesa Balbastre; Z. Conesa del Valle; P. Constantin; G. Contin; J. G. Contreras; T. M. Cormier; Y. Corrales Morales; P. Cortese; I. Cortés Maldonado; M. R. Cosentino; F. Costa; M. E. Cotallo; E. Crescio; P. Crochet; E. Cruz Alaniz; E. Cuautle; L. Cunqueiro; A. Dainese; H. H. Dalsgaard; A. Danu; K. Das; I. Das; D. Das; A. Dash; S. Dash; S. De; G. O. V. de Barros; A. De Caro; G. de Cataldo; J. de Cuveland; A. De Falco; D. De Gruttola; H. Delagrange; E. Del Castillo Sanchez; A. Deloff; V. Demanov; N. De Marco; E. Dénes; S. De Pasquale; A. Deppman; G. D Erasmo; R. de Rooij; M. A. Diaz Corchero; D. Di Bari; T. Dietel; C. Di Giglio; S. Di Liberto; A. Di Mauro; P. Di Nezza; R. Divià; Ø. Djuvsland; A. Dobrin; T. Dobrowolski; I. Domínguez; B. Dönigus; O. Dordic; O. Driga; A. K. Dubey; L. Ducroux; P. Dupieux; A. K. Dutta Majumdar; M. R. Dutta Majumdar; D. Elia; D. Emschermann; H. Engel; H. A. Erdal; B. Espagnon; M. Estienne; S. Esumi; D. Evans; G. Eyyubova; D. Fabris; J. Faivre; D. Falchieri; A. Fantoni; M. Fasel; R. Fearick; A. Fedunov; D. Fehlker; L. Feldkamp; D. Felea; B. Fenton-Olsen; G. Feofilov; A. Fernández Téllez; A. Ferretti; R. Ferretti; J. Figiel; M. A. S. Figueredo; S. Filchagin; D. Finogeev; F. M. Fionda; E. M. Fiore; M. Floris; S. Foertsch; P. Foka; S. Fokin; E. Fragiacomo; M. Fragkiadakis; U. Frankenfeld; U. Fuchs; C. Furget; M. Fusco Girard; J. J. Gaardhøje; M. Gagliardi; A. Gago; M. Gallio; D. R. Gangadharan; P. Ganoti; C. Garabatos; E. Garcia-Solis; I. Garishvili; J. Gerhard; M. Germain; C. Geuna; M. Gheata; A. Gheata; B. Ghidini; P. Ghosh; P. Gianotti; M. R. Girard; P. Giubellino; E. Gladysz-Dziadus; P. Glässel; R. Gomez; E. G. Ferreiro; L. H. González-Trueba; P. González-Zamora; S. Gorbunov; A. Goswami; S. Gotovac; V. Grabski; L. K. Graczykowski; R. Grajcarek; A. Grelli; C. Grigoras; A. Grigoras; V. Grigoriev; S. Grigoryan; A. Grigoryan; B. Grinyov; N. Grion; P. Gros; J. F. Grosse-Oetringhaus; J. -Y. Grossiord; R. Grosso; F. Guber; R. Guernane; C. Guerra Gutierrez; B. Guerzoni; M. Guilbaud; K. Gulbrandsen; T. Gunji; R. Gupta; A. Gupta; H. Gutbrod; Ø. Haaland; C. Hadjidakis; M. Haiduc; H. Hamagaki; G. Hamar; B. H. Han; L. D. Hanratty; A. Hansen; Z. Harmanova; J. W. Harris; M. Hartig; D. Hasegan; D. Hatzifotiadou; A. Hayrapetyan; S. T. Heckel; M. Heide; H. Helstrup; A. Herghelegiu; G. Herrera Corral; N. Herrmann; K. F. Hetland

2012-10-12T23:59:59.000Z

244

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  

SciTech Connect (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

245

Heart Rate Artifact Suppression.  

E-Print Network [OSTI]

??Motion artifact strongly corrupts heart rate measurements in current pulse oximetry systems. In many, almost any motion will greatly diminish the system’s ability to extract… (more)

Dickson, Christopher

2012-01-01T23:59:59.000Z

246

BNL | Shot Noise Suppression  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6 M. Babzien, I. Ben-Zvi, P. Catravas,MeVHard2nd

247

MicroRNA-320a suppresses human colon cancer cell proliferation by directly targeting {beta}-catenin  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer miR-320a is downregulated in human colorectal carcinoma. Black-Right-Pointing-Pointer Overexpression of miR-320a inhibits colon cancer cell proliferation. Black-Right-Pointing-Pointer {beta}-Catenin is a direct target of miR-320a in colon cancer cells. Black-Right-Pointing-Pointer miR-320a expression inversely correlates with mRNA expression of {beta}-catenin's target genes in human colon carcinoma. -- Abstract: Recent profile studies of microRNA (miRNA) expression have documented a deregulation of miRNA (miR-320a) in human colorectal carcinoma. However, its expression pattern and underlying mechanisms in the development and progression of colorectal carcinoma has not been elucidated clearly. Here, we performed real-time PCR to examine the expression levels of miR-320a in colon cancer cell lines and tumor tissues. And then, we investigated its biological functions in colon cancer cells by a gain of functional strategy. Further more, by the combinational approaches of bioinformatics and experimental validation, we confirmed target associations of miR-320a in colorectal carcinoma. Our results showed that miR-320a was frequently downregulated in cancer cell lines and colon cancer tissues. And we demonstrated that miR-320a restoration inhibited colon cancer cell proliferation and {beta}-catenin, a functionally oncogenic molecule was a direct target gene of miR-320a. Finally, the data of real-time PCR showed the reciprocal relationship between miR-320a and {beta}-catenin's downstream genes in colon cancer tissues. These findings indicate that miR-320a suppresses the growth of colon cancer cells by directly targeting {beta}-catenin, suggesting its application in prognosis prediction and cancer treatment.

Sun, Jian-Yong [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China) [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China); State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an (China); Huang, Yi [Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, 710032 Xi'an (China)] [Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, 710032 Xi'an (China); Li, Ji-Peng [State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an (China)] [State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an (China); Zhang, Xiang; Wang, Lei [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China)] [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China); Meng, Yan-Ling [Department of Immunology, Fourth Military Medical University, 710032 Xi'an (China)] [Department of Immunology, Fourth Military Medical University, 710032 Xi'an (China); Yan, Bo [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China)] [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China); Bian, Yong-Qian [State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an (China)] [State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an (China); Zhao, Jing [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China)] [State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Fourth Military Medical University, 710032 Xi'an (China); Wang, Wei-Zhong, E-mail: weichang@fmmu.edu.cn [State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an (China)] [State Key Laboratory of Cancer Biology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 710032 Xi'an (China); and others

2012-04-20T23:59:59.000Z

248

Suppression of fine-structure splitting and oscillator strength of sodium D-line in a Debye plasma  

SciTech Connect (OSTI)

We investigate theoretically the influence of static plasma screening on relativistic spin-orbit interaction-induced fine-structure splitting of the D-line doublet arising from the transitions 3p{sub 1/2}–3s{sub 1/2} and 3p{sub 3/2}–3s{sub 1/2} of the valence electron of a sodium atom embedded in a model plasma environment. The many-electron atomic problem is formulated first as an effective one-electron problem in which the interaction between the optically active valence electron and the atomic ion core is represented by an accurate parametric model potential including core-polarization correction, and then the plasma effect on the atomic system is simulated by the Debye-screening model for the valence-core interaction. It is observed that the magnitude of spin-orbit energy shift reduces for both the upper component 3p{sub 3/2} and the lower component 3p{sub 1/2} with increasing plasma screening strength, thereby reducing the spin-orbit energy separation between these two components as the screening becomes stronger. As a consequence, the magnitude of fine-structure splitting between the D{sub 1} and D{sub 2} line energies of sodium drops significantly with stronger plasma screening. The optical (absorption) oscillator strength for 3s ? 3p transition is seen to reduce with stronger screening and this leads to a screening-induced gradual suppression of the 3p ? 3s spontaneous decay rate.

Basu, Joyee, E-mail: joyeebasu@yahoo.com; Ray, Debasis, E-mail: ray.debasis@gmail.com [Department of Physics, Bengal Engineering and Science University, Shibpur, Howrah, West Bengal 711 103 (India)] [Department of Physics, Bengal Engineering and Science University, Shibpur, Howrah, West Bengal 711 103 (India)

2014-01-15T23:59:59.000Z

249

Apigenin suppresses migration and invasion of transformed cells through down-regulation of C-X-C chemokine receptor 4 expression  

SciTech Connect (OSTI)

Environmental exposure to arsenic is known to cause various cancers. There are some potential relationships between cell malignant transformation and C-X-C chemokine receptor type 4 (CXCR4) expressions. Metastasis, one of the major characteristics of malignantly transformed cells, contributes to the high mortality of cells. CXCR4 and its natural chemokine ligand C-X-C motif ligand 12 (CXCL12) play a critical role in metastasis. Therefore, identification of nutritional factors which are able to inhibit CXCR4 is important for protection from environmental arsenic-induced carcinogenesis and for abolishing metastasis of malignantly transformed cells. The present study demonstrates that apigenin (4?,5,7-trihydroxyflavone), a natural dietary flavonoid, suppressed CXCR4 expression in arsenic-transformed Beas-2B cells (B-AsT) and several other types of transformed/cancer cells in a dose- and time-dependent manner. Neither proteasome nor lysosome inhibitor had any effect in reducing the apigenin-induced down-regulation of CXCR4, indicating that apigenin-induced down-regulation of CXCR4 is not due to proteolytic degradation. The down-regulation of CXCR4 is mainly due to the inhibition of nuclear factor ?B (NF-?B) transcriptional activity. Apigenin also abolished migration and invasion of transformed cells induced by CXCL12. In a xenograft mouse model, apigenin down-regulated CXCR4 expression and suppressed tumor growth. Taken together, our results show that apigenin is a novel inhibitor of CXCR4 expression. This dietary flavonoid has the potential to suppress migration and invasion of transformed cells and prevent environmental arsenic-induced carcinogenesis. - Highlights: • Apigenin has a potential in preventing environmental arsenic induced carcinogenesis. • Apigenin suppresses CXCR4 in malignant transformed cells in vitro and in vivo. • The down-regulation of CXCR4 is mainly due to inhibition of NF-?B activity.

Wang, Lei; Kuang, Lisha; Hitron, John Andrew; Son, Young-Ok; Wang, Xin; Budhraja, Amit [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536 (United States); Lee, Jeong-Chae [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536 (United States); Institute of Oral Biosciences and BK21 Program, Research Center of Bioactive Materials, Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Pratheeshkumar, Poyil [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536 (United States); Chen, Gang [Department of Internal Medicine, University of Kentucky College of Medicine, Lexington, KY 40536 (United States); Zhang, Zhuo [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536 (United States); Luo, Jia [Department of Internal Medicine, University of Kentucky College of Medicine, Lexington, KY 40536 (United States); Shi, Xianglin, E-mail: xshi5@email.uky.edu [Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY 40536 (United States)

2013-10-01T23:59:59.000Z

250

D{sup 0}-{anti D}{sup 0} mixing and doubly Cabibbo-suppressed decays of the D{sup +}  

SciTech Connect (OSTI)

This report summarizes results from Fermilab experiment E791 on D{sup 0}-{anti D}{sup 0} mixing and doubly Cabibbo-suppressed decays of the D{sup +} meson. In order to search for D{sup 0}-{anti D}{sup 0} mixing, the authors use only D{sup 0} mesons from D{sup *+} decays in which case the charge of the pion from the D{sup *+} decay identifies the charm quantum number of the D{sup 0} at birth. When the D{sup 0} decays, the charge of the kaon identifies the charm quantum number and this way one can tell if mixing has occurred. This kind of search can be carried out by CLEO II as well and their conclusion was that there is some evidence of a wrong sign signal (0.77 {+-} 0.25 {+-} 0.25)% of the right sign signal. However, because of a lack of lifetime information, they cannot distinguish between doubly Cabibbo-suppressed decays which are expected at the level of the observed signal and mixing. They use their excellent lifetime sensitivity to obtain separate limits. During the past year, the authors have been working on extracting D{sup +} doubly Cabibbo-suppressed decay signals from E791`s data sample. These decays are interesting both because they have never been observed and because definite predictions have been made about their rates, based on models of D mesons and their decay mechanisms. Preliminary analyses of 1/3 of the data have now been completed. Figure 3 shows the Cabibbo-favored signal D{sup +} {yields} K{sup {minus}}{pi}{sup +}{pi}{sup +} and the next figure shows the signal in the doubly Cabibbo-suppressed mode D{sup +} {yields} K{sup +}{pi}{sup {minus}}{pi}{sup {minus}}.

Fermilab E791 Collaboration

1994-07-01T23:59:59.000Z

251

Probing of a human proteome microarray with a recombinant pathogen protein reveals a novel mechanism by which hookworms suppress B cell receptor signaling  

E-Print Network [OSTI]

Darren Pickering Severine Navarro Denise Doolan Angela Trieu Huang Fei Yang Chao Andreas Hofmann Robin Gasser Paul Giacomin Alex Loukas Order of Authors Secondary Information: Manuscript Region of Origin: AUSTRALIA Abstract: Na-ASP-2 is an efficacious... proteome microarray with a recombinant pathogen protein reveals a 1 novel mechanism by which hookworms suppress B cell receptor signaling 2 3 Leon Tribolet1, Cinzia Cantacessi1,2, Darren A. Pickering1, Severine Navarro1, Denise L. Doolan3, 4 Angela...

Tribolet, Leon; Cantacessi, Cinzia; Pickering, Darren; Navarro, Severine; Doolan, Denise; Trieu, Angela; Fei, Huang; Chao, Yang; Hofmann, Andreas; Gasser, Robin; Giacomin, Paul; Loukas, Alex

2014-08-19T23:59:59.000Z

252

Measurements of branching fraction ratios and CP-asymmetries in suppressed B-? D(? K+?-)K- and B-? D(? K+?-)?- decays  

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

We report the first reconstruction in hadron collisions of the suppressed decays B-? D(? K+?-)K- and B-? D(? K+?-)?- decays, sensitive to the CKM phase {gamma}, using data from 7 fb-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B-? D(? K+?-)K- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 ± 8.6(stat) ± 2.6(syst)] x 10-3, R+(K) = [42.6 ± 13.7(stat) ± 2.8(syst)] x 10-3, R-(K) = [3.8 ± 10.3(stat) ± 2.7(syst)] x 10-3 as well as the direct CP-violating asymmetry A(K) = -0.82±0.44(stat)±0.09(syst) of this mode. Corresponding quantities for B- ? D(? K+?-)?- decay are also reported.

Aaltonen, T. [Helsinki Inst. of Physics; Gonzalez, Alvarez B. [Oviedo U., Cantabria Inst. of Phys.; Amerio, S. [INFN, Padua; Amidei, D. [Michigan U.; Anastassov, A. [Northwestern U.; Annovi, A. [Frascati; Antos, J [Comenius U.; Apollinari, G. [Fermilab; Appel, J. A [Fermilab; Apresyan, A. [Purdue; Arisawa, T. [Waseda U., Dubna, JINR

2011-08-01T23:59:59.000Z

253

A non-uniform three-gap buncher cavity with suppression of transverse-electromagnetic mode leakage in the triaxial klystron amplifier  

SciTech Connect (OSTI)

The triaxial klystron amplifier is an efficient high power relativistic klystron amplifier operating at high frequencies due to its coaxial structure with large radius. However, the coaxial structures result in coupling problems among the cavities as the TEM mode is not cut-off in the coaxial tube. Therefore, the suppression of the TEM mode leakage, especially the leakage from the buncher cavity to the input cavity, is crucial in the design of a triaxial klystron amplifier. In this paper, a non-uniform three-gap buncher cavity is proposed to suppress the TEM mode leakage. The cold cavity analysis shows that the non-uniform three-gap buncher cavity can significantly suppress the TEM mode generation compared to a uniform three-gap buncher cavity. Particle-in-cell simulation shows that the power leakage to the input cavity is less than 1.5‰ of the negative power in the buncher cavity and the buncher cavity can efficiently modulate an intense relativistic electron beam free of self-oscillations. A fundamental current modulation depth of 117% is achieved by employing the proposed non-uniform buncher cavity into an X-band triaxial amplifier, which results in the high efficiency generation of high power microwave.

Qi, Zumin; Zhang, Jun, E-mail: zhangjun-nudt@126.com; Zhong, Huihuang; Zhu, Danni; Qiu, Yongfeng [College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China)] [College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China)

2014-01-15T23:59:59.000Z

254

SIRT1 inhibits proliferation of pancreatic cancer cells expressing pancreatic adenocarcinoma up-regulated factor (PAUF), a novel oncogene, by suppression of {beta}-catenin  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer SIRT1 inhibits protein levels of {beta}-catenin and its transcriptional activity. Black-Right-Pointing-Pointer Nuclear localization of SIRT1 is not required for the decrease of {beta}-catenin expression. Black-Right-Pointing-Pointer SIRT1-mediated degradation of {beta}-catenin is not required for GSK-3{beta} and Siah-1 but for proteosome. Black-Right-Pointing-Pointer SIRT1 activation inhibits proliferation of pancreatic cancer cells expressing PAUF. -- Abstract: Because we found in a recent study that pancreatic adenocarcinoma up-regulated factor (PAUF), a novel oncogene, induces a rapid proliferation of pancreatic cells by up-regulation of {beta}-catenin, we postulated that {beta}-catenin might be a target molecule for pancreatic cancer treatment. We thus speculated whether SIRT1, known to target {beta}-catenin in a colon cancer model, suppresses {beta}-catenin in those pancreatic cancer cells that express PAUF (Panc-PAUF). We further evaluated whether such suppression would lead to inhibition of the proliferation of these cells. The ectopic expression of either SIRT1 or resveratrol (an activator of SIRT1) suppressed levels of {beta}-catenin protein and its transcriptional activity in Panc-PAUF cells. Conversely, suppression of SIRT1 expression by siRNA enhanced {beta}-catenin expression and transcriptional activity. SIRT1 mutant analysis showed that nuclear localization of SIRT1 is not required for reduction of {beta}-catenin. Treatment with MG132, a proteasomal inhibitor, restored {beta}-catenin protein levels, suggesting that SIRT1-mediated degradation of {beta}-catenin requires proteasomal activity. It was reported that inhibition of GSK-3{beta} or Siah-1 stabilizes {beta}-catenin in colon cancer cells, but suppression of GSK-3{beta} or Siah-1 using siRNA in the presence of resveratrol instead diminished {beta}-catenin protein levels in Panc-PAUF cells. This suggests that GSK-3{beta} and Siah-1 are not involved in SIRT1-mediated degradation of {beta}-catenin in the cells. Finally, activation of SIRT1 inhibited the proliferation of Panc-PAUF cells by down-regulation of cyclin-D1, a target molecule of {beta}-catenin. These results suggest that SIRT1 activation may be a therapeutic strategy for treatment of pancreatic cancer cells that express PAUF via the down-regulation of {beta}-catenin.

Cho, Il-Rae [WCU, Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 609-735 (Korea, Republic of)] [WCU, Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 609-735 (Korea, Republic of); Koh, Sang Seok [Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-333 (Korea, Republic of) [Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-333 (Korea, Republic of); Department of Functional Genomics, University of Science and Technology, Daejeon 305-333 (Korea, Republic of); Malilas, Waraporn; Srisuttee, Ratakorn; Moon, Jeong [WCU, Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 609-735 (Korea, Republic of)] [WCU, Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 609-735 (Korea, Republic of); Choi, Young-Whan [Department of Horticultural Bioscience, Pusan National University, Miryang 627-706 (Korea, Republic of)] [Department of Horticultural Bioscience, Pusan National University, Miryang 627-706 (Korea, Republic of); Horio, Yoshiyuki [Department of Pharmacology, Sapporo Medical University, Sapporo 060-8556 (Japan)] [Department of Pharmacology, Sapporo Medical University, Sapporo 060-8556 (Japan); Oh, Sangtaek [Department of Advanced Fermentation Fusion Science and Technology, Kookmin University, Seoul 136-702 (Korea, Republic of)] [Department of Advanced Fermentation Fusion Science and Technology, Kookmin University, Seoul 136-702 (Korea, Republic of); Chung, Young-Hwa, E-mail: younghc@pusan.ac.kr [WCU, Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 609-735 (Korea, Republic of)] [WCU, Department of Cogno-Mechatronics Engineering, Pusan National University, Busan 609-735 (Korea, Republic of)

2012-06-29T23:59:59.000Z

255

Dual effects of N-acetyl-L-cysteine dependent on NQO1 activity: Suppressive or promotive of 9,10-phenanthrenequinone-induced toxicity  

SciTech Connect (OSTI)

A typical antioxidant, N-acetyl-L-cysteine (NAC) generally protects cells from oxidative damage induced by reactive oxygen species (ROS). 9,10-Phenanthrenequinone (9,10-PQ), a major quinone in diesel exhaust particles, produces ROS in redox cycling following two-electron reduction by NAD(P)H:quinone oxidoreductase 1 (NQO1), which has been considered as a cause of its cyto- and genotoxicity. In this study, we show that NAC unexpectedly augments the toxicity of 9,10-PQ in cells with low NQO1 activity. In four human skin cell lines, the expression and the activity of NQO1 were lower than in human adenocarcinoma cell lines, A549 and MCF7. In the skin cells, the cytotoxicity of 9,10-PQ was significantly enhanced by addition of NAC. The formation of DNA double strand breaks accompanying phosphorylation of histone H2AX, was also remarkably augmented. On the other hand, the cyto- and genotoxicity were suppressed by addition of NAC in the adenocarcinoma cells. Two contrasting experiments: overexpression of NQO1 in CHO-K1 cells which originally expressed low NQO1 levels, and knock?down of NQO1 in the adenocarcinoma cell line A549 by transfection of RNAi, also showed that NAC suppressed 9,10-PQ-induced toxicity in cell lines expressing high NQO1 activity and enhanced it in cell lines with low NQO1 activity. The results suggested that dual effects of NAC on the cyto- and genotoxicity of 9,10-PQ were dependent on tissue-specific NQO1 activity. -- Highlights: ? NAC augmented the cytotoxicity of 9,10-PQ in skin cell lines. ? 9,10-PQ-induced DSBs accompanying ?-H2AX were also augmented by NAC. ? NAC suppressed the cyto- and genotoxicity of 9,10-PQ in adenocarcinoma cell lines. ? The dual effects of NAC on toxicity of 9,10-PQ were dependent on NQO1 activity.

Toyooka, Tatsushi; Shinmen, Takuya [Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka (Japan)] [Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka (Japan); Aarts, Jac M.M.J.G. [Division of Toxicology, Wageningen University, Wageningen (Netherlands); Ibuki, Yuko, E-mail: ibuki@u-shizuoka-ken.ac.jp [Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka (Japan)] [Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka (Japan)

2012-11-01T23:59:59.000Z

256

Thermal decomposition of energetic materials; 65: Conversion of insensitive explosives (NTO, ANTA) and related compounds to polymeric melon-like cyclic azine burn-rate suppressants  

SciTech Connect (OSTI)

Selected triazole, tetrazole, triazine, tetrazine, furazan, and acyclic backbone compounds are shown by IR spectroscopy to convert to polymeric, melon-like, cyclic azine residues upon heating to T [ge] 500 C. These compounds include the insensitive explosives 3-nitro-1,2,4-triazol-5-one (NTO), 3-amino-5-nitro-1,2,4-triazole (ANTA), and nitroguanidine. The melon-like residue could suppress the burn rate if these compounds are formulated into solid rocket propellants. The IR-active gaseous products from thermolysis are determined as a function of pressure and are related to the atom connectivity in the parent molecules.

Williams, G.K.; Palopoli, S.F.; Brill, T.B. (Univ. of Delaware, Newark, DE (United States). Dept. of Chemistry)

1994-08-01T23:59:59.000Z

257

Observation of the large magnetocaloric effect and suppression of orbital entropy change in Fe-doped MnV{sub 2}O{sub 4}  

SciTech Connect (OSTI)

We present the structural and magnetic properties of Mn{sub 1?x}Fe{sub x}V{sub 2}O{sub 4} (x = 0.1, 0.2, and 0.3), and investigate the magnetocaloric effect in those compounds. The ferrimagnetic spin ordering is enhanced with the Fe doping at Mn site of MnV{sub 2}O{sub 4}, while the orbital ordering is suppressed. Large magnetic entropy changes up to 3.8 J/kg?K as well as the relative cooling power up to 110 J/kg at the field change of 0-2 T for Mn{sub 1?x}Fe{sub x}V{sub 2}O{sub 4} are calculated from the isothermal magnetization measurements. The large orbital entropy change of MnV{sub 2}O{sub 4} is suppressed by the Fe doping, while the spin entropy contribution arising from the strong spin-orbit coupling remains. Moreover, the doping of Fe broadens the temperature span of the large magnetic entropy change and increases the relative cooling power of MnV{sub 2}O{sub 4} by 2.4 times.

Huang, Z. H. [High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031 (China); Luo, X., E-mail: xluo@issp.ac.cn, E-mail: ypsun@issp.ac.cn; Hu, L.; Tan, S. G.; Liu, Y.; Yuan, B.; Chen, J.; Song, W. H. [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China and University of Science and Technology of China, Hefei 230026 (China); Sun, Y. P., E-mail: xluo@issp.ac.cn, E-mail: ypsun@issp.ac.cn [High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031 (China); Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China and University of Science and Technology of China, Hefei 230026 (China)

2014-01-21T23:59:59.000Z

258

Use of chlorofluorocarbons in refrigeration, insulation and mobile air conditioning in the USA*  

E-Print Network [OSTI]

that the atmospheric release of certain Halon 1211, Halon 1301, carbon tetrachloride and substances can result ozone were produced by the USA. These chemicals were chlorofluorocarbons (CFCs), halons, carbon tetrachloride and methyl chloroform. Roughly 40% ofthe total production of these ozone-depleting substances

Oak Ridge National Laboratory

259

Spectroscopic Characterization of Extracellular Polymeric Substances from Escherichia coli and Serratia marcescens: Suppression using Sub-Inhibitory Concentrations of Bismuth Thiols  

SciTech Connect (OSTI)

Free and capsular EPS produced by Escherichia coli and Serratia marcescens were characterized in detail using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and Auger electron spectroscopy (AES). Total EPS production decreased upon treatment with sub-inhibitory concentrations of lipophilic bismuth thiols (bismuth dimercaptopropanol, BisBAL; bismuth ethanedithiol, BisEDT; and bismuth pyrithione, BisPYR), BisBAL being most effective. Bismuth thiols also influenced acetylation and carboxylation of polysaccharides in EPS from S. marcescens. Extensive homology between EPS samples in the presence and absence of bismuth was observed with proteins, polysaccharides, and nucleic acids varying predominantly only in the total amount expressed. Second derivative analysis of the amide I region of FTIR spectra revealed decreases in protein secondary structures in the presence of bismuth thiols. Hence, anti-fouling properties of bismuth thiols appear to originate in their ability to suppress O-acetylation and protein secondary structures in addition to total EPS secretion.

Badireddy, Appala R.; Korpol, Bhoom Reddy; Chellam, Shankararaman; Gassman, Paul L.; Engelhard, Mark H.; Lea, Alan S.; Rosso, Kevin M.

2008-10-21T23:59:59.000Z

260

Mechanisms of tolerance in murine radiation bone marrow chimeras. I. Nonspecific suppression of alloreactivity by spleen cells from early, but not late, chimeras  

SciTech Connect (OSTI)

Allogeneic chimeras were prepared using lethally irradiated B6 hosts and untreated marrow from exsanguinated BALB/c donors. For about two months after reconstitution, chimeras had very weak antihost cell-mediated lymphocytotoxicity (CML) reactivity and little third-party alloreactivity. During this time a cell population capable of suppressing CML reactivity against both host and third-party alloantigens (i.e., antigen-nonspecific) was demonstrated in chimera spleens by in vitro mixing experiments. The putative suppressor cells were Thy-1-negative and radiation-sensitive. Subsequently, mature chimeras showed host tolerance and strong third-party alloreactivity. At this point suppressor mechanisms could no longer be demonstrated. These data are consistent with a clonal elimination hypothesis in that they do not provide evidence to indicate that maintenance of specific immune tolerance is mediated by an active suppressor mechanism.

Auchincloss, H. Jr.; Sachs, D.H.

1983-10-01T23:59:59.000Z

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261

Scaling patterns for the suppression of charged hadron yields in Pb+Pb collisions at Root_s = 2.76 TeV: Constraints on transport coefficients  

E-Print Network [OSTI]

Suppression measurements for charged hadrons are used to investigate the path length (L) and transverse momentum (p_T) dependent jet quenching patterns of the hot and dense QCD medium produced in Pb+Pb collisions at Root_s =2.76 TeV at the LHC. The observed scaling patterns, which are similar to those observed for Au+Au collisions at Root_s = 0.20 TeV at RHIC, show the trends predicted for jet-medium interactions dominated by radiative energy loss. They also allow a simple estimate of the transport coefficient $\\hat{q}$, which suggests that the medium produced in LHC collisions is somewhat less opaque than that produced at RHIC, if the same parton-medium coupling strength is assumed. The higher temperature produced in LHC collisions could reduce the parton-medium coupling strength to give identical values for $\\hat{q}$ in LHC and RHIC collisions.

Roy A. Lacey; N. N. Ajitanand; J. M. Alexander; J. Jia; A. Taranenko

2012-02-24T23:59:59.000Z

262

Suppression pattern of neutral pions at high transverse momentum in Au+Au collisions at sqrt(s_NN) = 200 GeV and constraints on medium transport coefficients  

E-Print Network [OSTI]

For Au + Au collisions at 200 GeV we measure neutral pion production with good statistics for transverse momentum, p_T, up to 20 GeV/c. A fivefold suppression is found, which is essentially constant for 5 transport coefficient of the medium, e.g. \\mean(q^hat) in the parton quenching model. The spectral shape is similar for all collision classes, and the suppression does not saturate in Au+Au collisions; instead, it increases proportional to the number of participating nucleons, as N_part^2/3.

PHENIX Collaboration; A. Adare

2008-01-25T23:59:59.000Z

263

Soranakom, C., Bakhshi M. , and Mobasher, B. " Role of Alkali Resistant Glass Fibers in Suppression of Restrained Shrinkage Cracking of Concrete Materials," 15th International Glass Fibre Reinforced Concrete Association  

E-Print Network [OSTI]

of Restrained Shrinkage Cracking of Concrete Materials," 15th International Glass Fibre Reinforced Concrete Fibers in Suppression of Restrained Shrinkage Cracking of Concrete Materials Chote Soranakom1 , Mehdi resistance of concrete subjected to drying shrinkage is studied by experimental and analytical approaches

Mobasher, Barzin

264

A DC-81-indole conjugate agent suppresses melanoma A375 cell migration partially via interrupting VEGF production and stromal cell-derived factor-1{alpha}-mediated signaling  

SciTech Connect (OSTI)

Pyrrolo[2,1-c][1,4]benzodiazepine (PBD) chemicals are antitumor antibiotics inhibiting nucleic acid synthesis. An indole carboxylate-PBD hybrid with six-carbon spacer structure (IN6CPBD) has been previously demonstrated to induce melanoma cell apoptosis and reduce metastasis in mouse lungs. This study aimed at investigating the efficacy of the other hybrid compound with four-carbon spacer (IN4CPBD) and elucidating its anti-metastatic mechanism. Human melanoma A375 cells with IN4CPBD treatment underwent cytotoxicity and apoptosis-associated assays. Transwell migration assay, Western blotting, and ELISA were used for mechanistic study. IN4CPBD exhibited potent melanoma cytotoxicity through interrupting G1/S cell cycle progression, increasing DNA fragmentation and hypodipoidic DNA contents, and reducing mitochondrial membrane potential. Caspase activity elevation suggested that both intrinsic and extrinsic pathways were involved in IN4CPBD-induced melanoma apoptosis. IN4CPBD up-regulated p53 and p21, thereby concomitantly derailing the equilibrium between Bcl-2 and Bax levels. Transwell migration assay demonstrated that stromal cell-derived factor-1{alpha} (SDF-1{alpha}) stimulated A375 cell motility, while kinase inhibitors treatment confirmed that Rho/ROCK, Akt, ERK1/2, and p38 MAPK pathways were involved in SDF-1{alpha}-enhanced melanoma migration. IN4CPBD not only abolished the SDF-1{alpha}-enhanced chemotactic motility but also suppressed constitutive MMP-9 and VEGF expression. Mechanistically, IN4CPBD down-regulated Akt, ERK1/2, and p38 MAPK total proteins and MYPT1 phosphorylation. In conclusion, beyond the fact that IN4CPBD induces melanoma cell apoptosis at cytotoxic dose, the interruption in the VEGF expression and the SDF-1{alpha}-related signaling at cytostatic dose may partially constitute the rationale for its in vivo anti-metastatic potency. - Research Highlights: > A novel carboxylate-PBD hybrid as anti-melanoma drug. > IN4CPBD interrupts melanoma cell cycle progression and induces apoptosis. > IN4CPBD suppresses SDF-1{alpha}-enhanced signaling and melanoma migration. > IN4CPBD abolishes angiogenic factor production and chemotactic effect of SDF-1{alpha}. > This drug is clinically applicable to melanoma therapy.

Hsieh, Ming-Chu [Graduate Institute of Pharmacy, Faculty of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan (China); Hu, Wan-Ping [Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan (China); Yu, Hsin-Su [Department of Dermatology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan (China); Wu, Wen-Chuan [Department of Ophthalmology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan (China); Chang, Long-Sen [Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan (China); Kao, Ying-Hsien, E-mail: danyhkao@gmail.com [Department of Medical Research, E-DA Hospital, I-Shou University, Kaohsiung, Taiwan (China); Wang, Jeh-Jeng, E-mail: jjwang@kmu.edu.tw [Graduate Institute of Pharmacy, Faculty of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan (China); Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan (China)

2011-09-01T23:59:59.000Z

265

The Superfluid State of a Bose Liquid as a Superposition of a Suppressed Bose-Eistein Condensate and an Intensive Pair Coherent Condensate  

E-Print Network [OSTI]

A self-consistent model of the superfluid (SF) state of a Bose liquid with strong interaction between bosons is considered, in which at T=0, along with a weak single-particle Bose-Einstein condensate (BEC), there exists an intensive pair coherent condensate (PCC) of bosons, analogous to the Cooper pair condensate of fermions. Such a PCC emerges due to an effective attraction between bosons in some regions of momentum space, which results from an oscillating sign-changing momentum dependence of the Fourier component V(p) of the interaction potential. The collective many-body effects of renormalization ("screening") of the initial interaction, which are described by the bosonic polarization operator \\Pi(p,\\omega), lead to a suppression of the repulsion [V(p)>0] and an enhancement of the effective attraction [V(p)energy parts is obtained with account for the terms of first order in the BEC density. In the framework of the ``soft spheres'' model with the single fitting parameter--the value of the repulsion potential at r=0, a theoretical quasiparticle spectrum E(p) is obtained, which is in good accordance with the experimental spectrum E_{exp}(p) of elementary excitations in superfluid $^4$He.

E. A. Pashitskii; S. V. Mashkevich; S. I. Vilchynskyy

2002-08-19T23:59:59.000Z

266

Inhibition of PRL-3 gene expression in gastric cancer cell line SGC7901 via microRNA suppressed reduces peritoneal metastasis  

SciTech Connect (OSTI)

High expression of PRL-3, a protein tyrosine phosphatase, is proved to be associated with lymph node metastasis in gastric carcinoma from previous studies. In this paper, we examined the relationship between PRL-3 expression and peritoneal metastasis in gastric carcinoma. We applied the artificial miRNA (pCMV-PRL3miRNA), which is based on the murine miR-155 sequence, to efficiently silence the target gene expression of PRL-3 in SGC7901 gastric cancer cells at both mRNA and protein levels. Then we observed that, in vitro, pCMV-PRL3miRNA significantly depressed the SGC7901 cell invasion and migration independent of cellular proliferation. In vivo, PRL-3 knockdown effectively suppressed the growth of peritoneal metastases and improved the prognosis in nude mice. Therefore, we concluded that artificial miRNA can depress the expression of PRL-3, and that PRL-3 might be a potential therapeutic target for gastric cancer peritoneal metastasis.

Li Zhengrong [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China); Zhan Wenhua [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China)]. E-mail: wcywk@hotmail.com; Wang Zhao [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China); Zhu Baohe [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China); He Yulong [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China); Peng Junsheng [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China); Cai Shirong [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China); Ma Jinping [Department of Gastrointestinopancreatic Surgery, First Affiliated Hospital, Sun Yat-sen University, Gastric Center of Sun Yat-sen University, Guangzhou 510080 (China)

2006-09-15T23:59:59.000Z

267

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

SciTech Connect (OSTI)

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

268

Hemoglobin levels do not predict biochemical outcome for localized prostate cancer treated with neoadjuvant androgen-suppression therapy and external-beam radiotherapy  

SciTech Connect (OSTI)

Purpose: To investigate whether hemoglobin (Hb) levels affect outcome in men with localized prostate adenocarcinoma (LPA) treated with neoadjuvant androgen-suppression therapy (NAST) and external-beam radiotherapy (EBRT). Methods and Materials: A total of 563 men with LPA treated with NAST (median: 5.3 months) and EBRT who had Hb levels during treatment were retrospectively reviewed. Patient, tumor, and treatment variables, including the following Hb variables, were subjected to univariate and multivariable analyses to identify factors that predict biochemical control (bNED) and overall survival (OS): pre-EBRT Hb, Hb nadir during EBRT, and change in Hb from pre-EBRT to nadir during EBRT. Results: Median PSA follow-up was 4.25 years. Forty-nine percent of men were anemic during EBRT, with a median Hb of 13.4 g/dL, and 68% experienced a decline in Hb from pre-EBRT to during EBRT of median 0.6 g/dL. Five-year Nadir + 2 bNED and OS rates were similar for anemic and nonanemic patients during EBRT. High percent-positive biopsies, PSA and Gleason score, and use of AA monotherapy predicted worse bNED. High stage and age predicted worse OS. Hb variables were not predictive of bNED or OS. Conclusions: Anemia is a common side effect of NAST and is usually mild. Hb levels, however, do not predict biochemical control or survival.

Pai, Howard Huaihan [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Island Centre, Victoria, British Columbia (Canada)]. E-mail: hpai@bccancer.bc.ca; Ludgate, Charles [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Island Centre, Victoria, British Columbia (Canada); Pickles, Tom [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Centre, Vancouver, British Columbia (Canada); Paltiel, Chuck M.Sc. [Department of Biostatistics, British Columbia Cancer Agency, Vancouver, British Columbia (Canada); Agranovich, Alex [Radiation Oncology Program, British Columbia Cancer Agency-Fraser Valley Centre, Surrey, British Columbia (Canada); Berthelet, Eric [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Island Centre, Victoria, British Columbia (Canada); Duncan, Graeme [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Centre, Vancouver, British Columbia (Canada); Kim-Sing, Charmaine [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Centre, Vancouver, British Columbia (Canada); Kwan, Winkle [Radiation Oncology Program, British Columbia Cancer Agency-Fraser Valley Centre, Surrey, British Columbia (Canada); Lim, Jan [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Island Centre, Victoria, British Columbia (Canada); Liu, Mitchell [Radiation Oncology Program, British Columbia Cancer Agency-Fraser Valley Centre, Surrey, British Columbia (Canada); Tyldesley, Scott [Radiation Oncology Program, British Columbia Cancer Agency-Vancouver Centre, Vancouver, British Columbia (Canada)

2006-07-15T23:59:59.000Z

269

Suppression of Akt1 phosphorylation by adenoviral transfer of the PTEN gene inhibits hypoxia-induced proliferation of rat pulmonary arterial smooth muscle cells  

SciTech Connect (OSTI)

Recent findings identify the role of proliferation of pulmonary artery smooth muscle cells (PASMCs) in pulmonary vascular remodeling. Phosphoinositide 3 kinase (PI3K) and serine/threonine kinase (Akt) proteins are expressed in vascular smooth muscle cells. In addition, phosphatase and tensin homolog deleted on chromosome 10 (PTEN) has been identified as a negative regulator of cytokine signaling that inhibits the PI3K-Akt pathway. However, little is known about the role of PTEN/Akt signaling in hypoxia-associated vascular remodeling. In this study, we found that hypoxia-induced the expression of Akt1 mRNA and phosphorylated protein by at least twofold in rat PASMCs. Phospho-PTEN significantly decreased in the nuclei of PASMCs after hypoxic stimulation. After forcing over-expression of PTEN by adenovirus-mediated PTEN (Ad-PTEN) transfection, the expression of phospho-Akt1 was significantly suppressed in PASMCs at all time-points measured. Additionally, we showed here that hypoxia increased proliferation of PASMCs by nearly twofold and over-expression of PTEN significantly inhibited hypoxia-induced PASMCs proliferation. These findings suggest that phospho-PTEN loss in the nuclei of PASMCs under hypoxic conditions may be the major cause of aberrant activation of Akt1 and may, therefore, play an important role in hypoxia-associated pulmonary arterial remodeling. Finally, the fact that transfection with Ad-PTEN inhibits the phosphorylation of Akt1 in PASMCs suggests a potential therapeutic effect on hypoxia-associated pulmonary arterial remodeling.

Luo, Chunxia [Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China)] [Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China); Yi, Bin, E-mail: yibin1974@163.com [Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China) [Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China); Institute of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing 400037 (China); Bai, Li [Institute of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing 400037 (China)] [Institute of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing 400037 (China); Xia, Yongzhi [Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China)] [Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China); Wang, Guansong; Qian, Guisheng [Institute of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing 400037 (China)] [Institute of Respiratory Disease, Xinqiao Hospital, Third Military Medical University, Chongqing 400037 (China); Feng, Hua [Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China)] [Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing 400038 (China)

2010-07-02T23:59:59.000Z

270

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  

SciTech Connect (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

271

Atomic Beam Merging and Suppression of Alkali Contaminants in Multi Body High Power Targets: Design and Test of Target and Ion Source Prototypes at ISOLDE  

E-Print Network [OSTI]

The next generation of high power ISOL-facilities will deliver intense and pure radioactive ion beams. Two key issues of developments mandatory for the forthcoming generation of ISOL target-ion source units are assessed and demonstrated in this thesis. The design and production of target and ion-source prototypes is described and dedicated measurements at ISOLDE-CERN of their radioisotope yields are analyzed. The purity of short lived or rare radioisotopes suffer from isobaric contaminants, notably alkalis which are highly volatile and easily ionized elements. Therefore, relying on their chemical nature, temperature controlled transfer lines were equipped with a tube of quartz that aimed at trapping these unwanted elements before they reached the ion source. The successful application yields high alkali-suppression factors for several elements (ie: 80, 82mRb, 126, 142Cs, 8Li, 46K, 25Na, 114In, 77Ga, 95, 96Sr) for quartz temperatures between 300ºC and 1100ºC. The enthalpies of adsorption on quartz were measu...

Bouquerel, Elian J A; Lettry, J; Stora, T

2009-01-01T23:59:59.000Z

272

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

273

Study of the doubly and singly Cabibbo suppressed decays D+ --> K+ pi- pi+ and D(s)+ --> K+ pi- pi+ in the FOCUS experiment  

SciTech Connect (OSTI)

This thesis illustrates a complete study of the doubly and singly Cabibbo suppressed decays D{sup +} and D{sub s}{sup +} {yields} K{sup +} {pi}{sup -}{pi}{sup +}. Data for this analysis have been collected by the fixed-target high-energy photoproduction experiment FOCUS at Fermilab. The authors have selected the D{sup +} and D{sub s}{sup +} samples with cuts to obtain a sufficiently high statistics, a good signal to noise ratio and, at the same time, eliminate possible contaminations from the more copious and favored decays. The D{sup +} yield consists of 189 {+-} 24 events, with a signal to noise ratio {approx} 1; the D{sub s}{sup +} yield is 567 {+-} 31 and the signal to noise ratio is {approx} 2.5. The authors have measured {Lambda}(D{sup +} {yields} K{sup +}{pi}{sup -}{pi}{sup +})/{Lambda}(D{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +}) = 0.0065 {+-} 0.0008 {+-} 0.004 and {Lambda}(D{sub s}{sup +} {yields} K{sup +}{pi}{sup -}{pi}{sup +})/{Lambda}(D{sub s}{sup +} {yields} K{sup +}K{sup -}{pi}{sup +}) = 0.127 {+-} 0.007 {+-} 0.014, improving the previous determinations of a factor of 2 and 5, respectively. The author has also performed a Dalitz plot analysis for both decays. The amplitude analysis for D{sub s}{sup +} {yields} K{sup +}{pi}{sup -}{pi}{sup +} represents the first available measurement for this channel.

Edera, Laura

2005-01-01T23:59:59.000Z

274

Combination External Beam Radiation and Brachytherapy Boost With Androgen Suppression for Treatment of Intermediate-Risk Prostate Cancer: An Initial Report of CALGB 99809  

SciTech Connect (OSTI)

Purpose: Transperineal prostate brachytherapy (TPPB) can be used with external beam radiation therapy (EBRT) to provide a high-dose conformal boost to the prostate. The results of a multicenter Phase II trial assessing safety of combination of EBRT and TPPB boost with androgen suppression (AST) in treatment of intermediate-risk prostate cancer are present here. Materials and Methods: Patients had intermediate-risk prostate cancer. Six months of AST was administered. EBRT to the prostate and seminal vesicles was administered to 45Gy followed by TPPB using either {sup 125}I or {sup 103}Pd to deliver an additional 100Gy or 90Gy. Toxicity was graded using the National Cancer Institute CTC version 2 and the Radiation Therapy Oncology Group late radiation morbidity scoring systems. Results: Sixty-three patients were enrolled. Median follow-up was 38 months. Side effects of AST including sexual dysfunction and vasomotor symptoms were commonly observed. Apart from erectile dysfunction, short-term Grade 2 and 3 toxicity was noted in 21% and 7%, primarily genitourinary related. Long-term Grade 2 and 3 toxicities were noted in 13% and 3%. Two patients had Grade 3 dysuria that resolved with longer follow-up. The most common Grade 2 long-term toxicity was urinary frequency (5%). No biochemical or clinical evidence of progression was noted for the entire cohort. Conclusions: In a cooperative group setting, combination EBRT and TPPB boost with 6 months of AST was generally well tolerated with expected genitourinary and gastrointestinal toxicities. Further follow-up will be required to fully assess long-term toxicity and cancer control.

Hurwitz, Mark D. [Dana-Farber/Brigham and Women's Cancer Center, Boston, MA (United States)], E-mail: mhurwitz@lroc.harvard.edu; Halabi, Susan [Harvard Medical School, Boston, MA (United States); Ou, San-San [CALGB Statistical Center, Duke University Medical Center, Durham, NC (United States); McGinnis, Lamar S. [Southeast Cancer Control Consortium, Winston Salem, NC (United States); Keuttel, Michael R. [Roswell Park Cancer Institute, Buffalo, NY (United States); DiBiase, Steven J. [University of Maryland Medical Center, Baltimore, MD (United States); Small, Eric J. [University of California at San Francisco Comprehensive Cancer Center, San Francisco, CA (United States)

2008-11-01T23:59:59.000Z

275

Propofol pretreatment attenuates LPS-induced granulocyte-macrophage colony-stimulating factor production in cultured hepatocytes by suppressing MAPK/ERK activity and NF-{kappa}B translocation  

SciTech Connect (OSTI)

Propofol (PPF), a widely used intravenous anesthetic for induction and maintenance of anesthesia during surgeries, was found to possess suppressive effect on host immunity. This study aimed at investigating whether PPF plays a modulatory role in the lipopolysaccharide (LPS)-induced inflammatory cytokine expression in a cell line of rat hepatocytes. Morphological observation and viability assay showed that PPF exhibits no cytotoxicity at concentrations up to 300 {mu}M after 48 h incubation. Pretreatment with 100 {mu}M PPF for 24 h prior to LPS stimulation was performed to investigate the modulatory effect on LPS-induced inflammatory gene production. The results of semi-quantitative RT-PCR demonstrated that PPF pretreatment significantly suppressed the LPS-induced toll-like receptor (TLR)-4, CD14, tumor necrosis factor (TNF)-{alpha}, and granulocyte-macrophage colony-stimulating factor (GM-CSF) gene expression. Western blotting analysis showed that PPF pretreatment potentiated the LPS-induced TLR-4 downregulation. Flow cytometrical analysis revealed that PPF pretreatment showed no modulatory effect on the LPS-upregulated CD14 expression on hepatocytes. In addition, PPF pretreatment attenuated the phosphorylation of mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK) and I{kappa}B{alpha}, as well as the nuclear translocation of NF-{kappa}B primed by LPS. Moreover, addition of PD98059, a MAPK kinase inhibitor, significantly suppressed the LPS-induced NF-{kappa}B nuclear translocation and GM-CSF production, suggesting that the PPF-attenuated GM-CSF production in hepatocytes may be attributed to its suppressive effect on MAPK/ERK signaling pathway. In conclusion, PPF as an anesthetic may clinically benefit those patients who are vulnerable to sepsis by alleviating sepsis-related inflammatory response in livers.

Jawan, Bruno [Department of Anesthesiology and Liver Transplantation Program, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien 833, Taiwan (China); Kao, Y.-H. [Department of Anesthesiology and Liver Transplantation Program, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien 833, Taiwan (China); Department of Biological Sciences, National Sun Yat-Sen University, 70 Lien-Hai Road, Kaohsiung 804, Taiwan (China); Goto, Shigeru [Department of Surgery and Liver Transplantation Program, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien 833, Taiwan (China); Department of Surgery, Iwao Hospital, 3059-1 Kawakami, Yufuin, Oita 879-5102 (Japan); Pan, M.-C. [Department of Anesthesiology and Liver Transplantation Program, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien 833, Taiwan (China); Lin, Y.-C.; Hsu, L.-W.; Nakano, Toshiaki; Lai, C.-Y.; Sun, C.-K.; Cheng, Y.-F. [Department of Surgery and Liver Transplantation Program, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung Hsien 833, Taiwan (China); Tai, M.-H. [Department of Biological Sciences, National Sun Yat-Sen University, 70 Lien-Hai Road, Kaohsiung 804, Taiwan (China); Department of Medical Research and Education, Kaohsiung Veterans General Hospital, 386 Ta-Chung 1st Road, Kaohsiung 813, Taiwan (China)] (and others)

2008-06-15T23:59:59.000Z

277

Measurements of branching fraction ratios and CP-asymmetries in suppressed B-? D(? K+?-)K- and B-? D(? K+?-)?- decays  

SciTech Connect (OSTI)

We report the first reconstruction in hadron collisions of the suppressed decays B-? D(? K+?-)K- and B-? D(? K+?-)?- decays, sensitive to the CKM phase {gamma}, using data from 7 fb-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B-? D(? K+?-)K- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 ± 8.6(stat) ± 2.6(syst)] x 10-3, R+(K) = [42.6 ± 13.7(stat) ± 2.8(syst)] x 10-3, R-(K) = [3.8 ± 10.3(stat) ± 2.7(syst)] x 10-3 as well as the direct CP-violating asymmetry A(K) = -0.82±0.44(stat)±0.09(syst) of this mode. Corresponding quantities for B- ? D(? K+?-)?- decay are also reported.

Aaltonen, T. [Helsinki Inst. of Physics; Gonzalez, Alvarez B. [Oviedo U., Cantabria Inst. of Phys.; Amerio, S. [INFN, Padua; Amidei, D. [Michigan U.; Anastassov, A. [Northwestern U.; Annovi, A. [Frascati; Antos, J [Comenius U.; Apollinari, G. [Fermilab; Appel, J. A [Fermilab; Apresyan, A. [Purdue; Arisawa, T. [Waseda U., Dubna, JINR

2011-08-01T23:59:59.000Z

278

Quantitative Constraints on the Transport Properties of Hot Partonic Matter from Semi-Inclusive Single High Transverse Momentum Pion Suppression in Au+Au collisions at sqrt(s_NN) = 200 GeV  

E-Print Network [OSTI]

The PHENIX experiment has measured the suppression of semi-inclusive single high transverse momentum pi^0's in Au+Au collisions at sqrt(s_NN) = 200 GeV. The present understanding of this suppression is in terms of energy-loss of the parent (fragmenting) parton in a dense color-charge medium. We have performed a quantitative comparison between various parton energy-loss models and our experimental data. The statistical point-to-point uncorrelated as well as correlated systematic uncertainties are taken into account in the comparison. We detail this methodology and the resulting constraint on the model parameters, such as the initial color-charge density dN^g/dy, the medium transport coefficient , or the initial energy-loss parameter epsilon_0. We find that high transverse momentum pi^0 suppression in Au+Au collisions has sufficient precision to constrain these model dependent parameters at the +/1 20%-25% (one standard deviation) level. These constraints include only the experimental uncertainties, and further studies are needed to compute the corresponding theoretical uncertainties.

PHENIX Collaboration; A. Adare

2008-09-26T23:59:59.000Z

279

Analysis of D0 -> K+ pi- pi0 Decays: Search for D0-D0bar Mixing, and Measurements of the Doubly Cabibbo-Suppressed Decay Rate and Resonance Contributions  

SciTech Connect (OSTI)

Analyzing D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays, herein are presented the methods and results of a search for D{sup 0}-{bar D}{sup 0} mixing, a measurement of the branching ratio R {equivalent_to} {Lambda}(D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup +}{pi}{sup 0}), and measurements of the contributions from D{sup 0} {yields} K{sup +}{rho}{sup -}, K*{sup +}{pi}{sup -}, K*{sup 0}{pi}{sup 0}; 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider during 2000-2004 (Runs 1-4) are analyzed. An event-level tagging technique is developed, which facilitates the accurate determination of doubly Cabibbo-suppressed resonance contributions by suppressing background from Cabibbo-favored decays. The branching ratio is measured as R = (0.214 {+-} 0.008 (stat) {+-} 0.008 (syst))%, with (46.1 {+-} 3.3 (stat) {+-} 2.9 (syst))% of D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays proceeding through the channel D{sup 0} {yields} K*{sup +}{pi}{sup -}. The data are consistent with the null-D-mixing hypothesis at a confidence level of 10%, and the expected value of {+-} {radical}(x{sup 2} + y{sup 2}) is measured as -0.013 {+-} 0.010 (stat), indicating negative interference between mixing and doubly Cabibbo-suppressed decay. The expected value of the integrated mixing rate is (x{sup 2} + y{sup 2})/2 = (0.013 {+-} 0.013 (stat))%.

Wilson, Michael Galante

2005-12-13T23:59:59.000Z

280

Suppression of the metal-insulator transition by magnetic field in (Pr{sub 1?y}Y{sub y}){sub 0.7}Ca{sub 0.3}CoO{sub 3} (y?=?0.0625)  

SciTech Connect (OSTI)

The (Pr{sub 1?y}Y{sub y}){sub 0.7}Ca{sub 0.3}CoO{sub 3} compound (y?=?0.0625, T{sub MI-SS}=40?K), at the lower limit for occurrence of the first-order metal-insulator (MI) and simultaneous spin-state (SS) transitions, has been studied using electrical resistivity and magnetization measurements in magnetic fields up to 17?T. The isothermal experiments demonstrate that the low-temperature insulating phase can be destabilized by an applied field and the metallic phase returns well below the transition temperature T{sub MI-SS}. The reverse process with decreasing field occurs with a significant hysteresis. The temperature scans taken at fixed magnetic fields reveal a parabolic-like decrease in T{sub MI-SS} with increasing field strength and a complete suppression of the MI-SS transition in fields above 9?T.

Naito, Tomoyuki, E-mail: tnaito@iwate-u.ac.jp; Fujishiro, Hiroyuki [Faculty of Engineering, Iwate University, Morioka 020-8551 (Japan); Nishizaki, Terukazu; Kobayashi, Norio [Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan); Hejtmánek, Ji?í; Knížek, Karel; Jirák, Zden?k [Institute of Physics, ASCR, Cukrovarnická 10, 162 00 Prague 6 (Czech Republic)

2014-06-21T23:59:59.000Z

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281

Suppression of thermal carrier escape and efficient photo-carrier generation by two-step photon absorption in InAs quantum dot intermediate-band solar cells using a dot-in-well structure  

SciTech Connect (OSTI)

We investigated the effects of an increase in the barrier height on the enhancement of the efficiency of two-step photo-excitation in InAs quantum dot (QD) solar cells with a dot-in-well structure. Thermal carrier escape of electrons pumped in QD states was drastically reduced by sandwiching InAs/GaAs QDs with a high potential barrier of Al{sub 0.3}Ga{sub 0.7}As. The thermal activation energy increased with the introduction of the barrier. The high potential barrier caused suppression of thermal carrier escape and helped realize a high electron density in the QD states. We observed efficient two-step photon absorption as a result of the high occupancy of the QD states at room temperature.

Asahi, S.; Teranishi, H.; Kasamatsu, N.; Kada, T.; Kaizu, T.; Kita, T. [Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501 (Japan)

2014-08-14T23:59:59.000Z

282

Ultraviolet GaN photodetectors on Si via oxide buffer heterostructures with integrated short period oxide-based distributed Bragg reflectors and leakage suppressing metal-oxide-semiconductor contacts  

SciTech Connect (OSTI)

Based on a novel double step oxide buffer heterostructure approach for GaN integration on Si, we present an optimized Metal-Semiconductor-Metal (MSM)-based Ultraviolet (UV) GaN photodetector system with integrated short-period (oxide/Si) Distributed Bragg Reflector (DBR) and leakage suppressing Metal-Oxide-Semiconductor (MOS) electrode contacts. In terms of structural properties, it is demonstrated by in-situ reflection high energy electron diffraction and transmission electron microscopy-energy dispersive x-ray studies that the DBR heterostructure layers grow with high thickness homogeneity and sharp interface structures sufficient for UV applications; only minor Si diffusion into the Y{sub 2}O{sub 3} films is detected under the applied thermal growth budget. As revealed by comparative high resolution x-ray diffraction studies on GaN/oxide buffer/Si systems with and without DBR systems, the final GaN layer structure quality is not significantly influenced by the growth of the integrated DBR heterostructure. In terms of optoelectronic properties, it is demonstrated that—with respect to the basic GaN/oxide/Si system without DBR—the insertion of (a) the DBR heterostructures and (b) dark current suppressing MOS contacts enhances the photoresponsivity below the GaN band-gap related UV cut-off energy by almost up to two orders of magnitude. Given the in-situ oxide passivation capability of grown GaN surfaces and the one order of magnitude lower number of superlattice layers in case of higher refractive index contrast (oxide/Si) systems with respect to classical III-N DBR superlattices, virtual GaN substrates on Si via functional oxide buffer systems are thus a promising robust approach for future GaN-based UV detector technologies.

Szyszka, A., E-mail: szyszka@ihp-microelectronics.com, E-mail: adam.szyszka@pwr.wroc.pl [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw (Poland); Lupina, L.; Lupina, G.; Schubert, M. A.; Zaumseil, P. [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); Haeberlen, M.; Storck, P.; Thapa, S. B. [Siltronic, Hanns-Seidel-Platz 4, 81737 München (Germany); Schroeder, T. [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); BTU Cottbus-Senftenberg, Konrad-Zuse-Strasse 1, 03046 Cottbus (Germany)

2014-08-28T23:59:59.000Z

283

Inhibition of fatty acid synthase suppresses U-2 OS cell invasion and migration via downregulating the activity of HER2/PI3K/AKT signaling pathway in vitro  

SciTech Connect (OSTI)

Highlights: •We investigate the relationship between FASN and HER2 or p-HER2 by IHC in OS tissues. •We construct FASN-specific RNAi plasmid. •Inhibiting FASN down-regulates HER2/PI3K/AKT cell signaling in U-2 OS. •Inhibiting FASN blocks U-2 OS cell invasion and migration. -- Abstract: FASN plays an important role in the malignant phenotype of various tumors. Our previous studies show that inhibition FASN could induce apoptosis and inhibit proliferation in human osteosarcoma (OS) cell in vivo and vitro. The aim in this study was to investigate the effect of inhibition FASN on the activity of HER2/PI3K/AKT axis and invasion and migration of OS cell. The expression of FASN, HER2 and p-HER2(Y1248) proteins was detected by immunohistochemistry in OS tissues from 24 patients with pulmonary metastatic disease, and the relationship between FASN and p-HER2 as well as HER2 was investigated. The results showed that there was a positive correlation between FASN and HER2 as well as p-HER2 protein expression. The U-2 OS cells were transfected with either the FASN specific RNAi plasmid or the negative control RNAi plasmid. FASN mRNA was measured by RT-PCR. Western blot assays was performed to examine the protein expression of FASN, HER2, p-HER2(Y1248), PI3K, Akt and p-Akt (Ser473). Migration and invasion of cells were investigated by wound healing and transwell invasion assays. The results showed that the activity of HER2/PI3K/AKT signaling pathway was suppressed by inhibiting FASN. Meanwhile, the U-2OS cells migration and invasion were also impaired by inhibiting the activity of FASN/HER2/PI3K/AKT. Our results indicated that inhibition of FASN suppresses OS cell invasion and migration via down-regulation of the “HER2/PI3K/AKT” axis in vitro. FASN blocker may be a new therapeutic strategy in OS management.

Wang, Tao Fang; Wang, Heng [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China)] [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China); Peng, Ai Fen [Jiangxi University of Traditional Chinese Medicine, Jiangxi (China)] [Jiangxi University of Traditional Chinese Medicine, Jiangxi (China); Luo, Qing Feng [Department of Pathology, Cancer Hospital of Jiangxi Province, Jiangxi (China)] [Department of Pathology, Cancer Hospital of Jiangxi Province, Jiangxi (China); Liu, Zhi Li, E-mail: zgm7977@163.com [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China); Zhou, Rong Ping [Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Jiangxi (China)] [Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Jiangxi (China); Gao, Song; Zhou, Yang; Chen, Wen Zhao [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China)] [Department of Orthopedics, First Affiliated Hospital of Nanchang University, Jiangxi (China)

2013-10-18T23:59:59.000Z

284

Superstitious suppression of a conditioned response  

E-Print Network [OSTI]

of three groups (3 Ss per group). Respcnses were main- tained by a VI-1 minute schedule of food reinforcement. A concurrent punishment schedule (VI-2 minute) was used in which group 1 received contingent shock and group 3 received noncontingent shock... throughout. Group 2 (the experimental group) received contingent shock initially and was then switched to noncontingent shock. It was hypothesized that the response rate of group 2 would approximate that of group l. However, after the punishment...

Harding, Thomas Hague

1971-01-01T23:59:59.000Z

285

Raman laser with controllable suppression of parasitics  

DOE Patents [OSTI]

Method and apparatus for switching energy out of a Raman laser optical cavity. Coherent radiation at both the pump and first Stokes wave frequencies are introduced into the optical cavity from the same direction, and a second Stokes wave is utilized to switch the energy out of the cavity.

George, E. Victor (Livermore, CA)

1986-01-01T23:59:59.000Z

286

Suppressing cascades of load in interdependent networks  

E-Print Network [OSTI]

and in Europe (13). Fig. 1 shows the interconnections planned to transport wind power (11). Though necessary on modular random graphs and on graphs based on actual, interdependent power grids. Starting from two, power grid owners to minimize the largest cascades in their grid. We also show that asymmetric capacity

Wolpert, Robert L

287

Carbon fuel cells with carbon corrosion suppression  

DOE Patents [OSTI]

An electrochemical cell apparatus that can operate as either a fuel cell or a battery includes a cathode compartment, an anode compartment operatively connected to the cathode compartment, and a carbon fuel cell section connected to the anode compartment and the cathode compartment. An effusion plate is operatively positioned adjacent the anode compartment or the cathode compartment. The effusion plate allows passage of carbon dioxide. Carbon dioxide exhaust channels are operatively positioned in the electrochemical cell to direct the carbon dioxide from the electrochemical cell.

Cooper, John F. (Oakland, CA)

2012-04-10T23:59:59.000Z

288

Astrophysical Bounds on Planck Suppressed Lorentz Violation  

E-Print Network [OSTI]

This article reviews many of the observational constraints on Lorentz symmetry violation (LV). We first describe the GZK cutoff and other phenomena that are sensitive to LV. After a brief historical sketch of research on LV, we discuss the effective field theory description of LV and related questions of principle, technical results, and observational constraints. We focus on constraints from high energy astrophysics on mass dimension five operators that contribute to LV electron and photon dispersion relations at order E/M_Planck. We also briefly discuss constraints on renormalizable operators, and review the current and future contraints on LV at order (E/M_Planck)^2.

Ted Jacobson; Stefano Liberati; David Mattingly

2004-07-30T23:59:59.000Z

289

Suppression of automotive radio frequency interference  

E-Print Network [OSTI]

'TBATIONS Pag~ 1. Thc Au tomo Li. ve Igni t ion Syst: em 2. Iquivalent Circuit for SLate Variable Analys. i. s 3. Osci. lloscope Presentation of Spar)c P) ug Gap Curron c 77ave form 15 4. k'atbcmat'c. , l Representation of Spark plug ' ap Current t7... ) ? dl. st. r& 0 t * (CD+1) ) & ond. ? d i s tr i. b uior corsducting n==7, 8, . . . 21 ))/?0 n=-7, . . . 2G spark plug not conducCing spar!c plug cor, ducting A suitable computer integration technique may be applied Lo these equati. ons to u...

McLaughlin, Cleon Crosby

1969-01-01T23:59:59.000Z

290

Power Suppression in D-Brane Inflation  

E-Print Network [OSTI]

Cosmological inflation is the period of rapid, accelerated expansion that occurred in the fraction of a second between the creation of spacetime and the Big Bang. Its proposal 35 years ago singlehandedly solved the three greatest issues of the Big...

Akers, Christopher Nelson

2013-10-01T23:59:59.000Z

291

Airfoil Vortex Induced Vibration suppression devices  

E-Print Network [OSTI]

Vortex Induced Vibrations (VIV) is a major concern of the offshore oil industry. This problem leads to fatigue failure in the marine risers and causes costly replacement of the risers. Appendages such as helical strakes ...

Lee, Evan J. (Evan Joseph)

2007-01-01T23:59:59.000Z

292

Interference suppression in spread-spectrum networks  

E-Print Network [OSTI]

G. Proakis, “Analysis of a MISO pre- BLAST-DFE technique forpre-BLAST-DFE technique for MISO channels with decentralized

Sui, Haichang

2007-01-01T23:59:59.000Z

293

Blast Effects Suppression System - Energy Innovation Portal  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillance A Los AlamosCleanIndustrial

294

Argonne, Evigia finalize licensing agreement for next-gen RFID...  

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

ARG-US software suite will be further developed and marketed by Evigia as a comprehensive nuclear and hazardous material handling solution. The system, jointly developed by Evigia...

295

Suppressed fusion cross section for neutron halo nuclei  

E-Print Network [OSTI]

Fusion reactions of neutron-halo nuclei are investigated theoretically with a three-body model. The time-dependent wave-packet method is used to solve the three-body Schrodinger equation. The halo neutron behaves as a spectator during the Coulomb dissociation process of the projectile. The fusion cross sections of 11Be-209Bi and 6He-238U are calculated and are compared with measurements. Our calculation indicates that the fusion cross section is slightly hindered by the presence of weakly bound neutrons.

Makoto Ito; Kazuhiro Yabana; Takashi Nakatsukasa; Manabu Ueda

2006-01-20T23:59:59.000Z

296

Novel rf mems tunable filters with adjustable spurious suppression  

E-Print Network [OSTI]

This thesis presents the theory and design of fixed and Radio Frequency (RF) Microelectromechanical Systems (MEMS) -based tunable microwave filters for RF and microwave applications. The methodology for the design of coupled resonator filters...

Sekar, Vikram

2009-05-15T23:59:59.000Z

297

A study on passive methods of vortex induced vibrations suppression  

E-Print Network [OSTI]

A number of engineering systems, including those found in offshore operations, are often affected by vortex-induced vibrations (VIV). This phenomenon is caused by the interaction between a structure and shed vortices which ...

Galvao, Richardo A

2008-01-01T23:59:59.000Z

298

Suppressions and cascades : insights from gauge/gravity dualities  

E-Print Network [OSTI]

At present, there are no non-perturbative analytic methods available for investigating gauge theories at large couplings. Consequently, it is desirable to explore more avenues to gain qualitative and quantitative insights. ...

Ejaz, Qudsia Jabeen

2008-01-01T23:59:59.000Z

299

Aging, tumor suppression and cancer: High-wire act!  

E-Print Network [OSTI]

Nature 408, 248–254. DiLeonardo, A. , Linke, S.P. , Clarkin,events include DNA damage (DiLeonardo et al. , 1994; Chen et

Campisi, Judith

2004-01-01T23:59:59.000Z

300

Sirt2 suppresses inflammatory responses in collagen-induced arthritis  

SciTech Connect (OSTI)

Highlights: •Sirt2 expression decreases in collagen-induced arthritis (CIA). •Sirt2 knockout aggravates severity of arthritis in mice with CIA. •Sirt2 knockout increases levels of pro-inflammatory factors in the serum. •Sirt2 deacetylates p65 and inhibits pro-inflammatory factors expression. •Sirt2 rescue abates severity of arthritis in mice with CIA. -- Abstract: Arthritis is a common autoimmune disease that is associated with progressive disability, systemic complications and early death. However, the underling mechanisms of arthritis are still unclear. Sirtuins are a NAD{sup +}-dependent class III deacetylase family, and regulate cellular stress, inflammation, genomic stability, carcinogenesis, and energy metabolism. Among the sirtuin family members, Sirt1 and Sirt6 are critically involved in the development of arthritis. It remains unknown whether other sirtuin family members participate in arthritis. Here in this study, we demonstrate that Sirt2 inhibits collagen-induced arthritis (CIA) using in vivo and in vitro evidence. The protein and mRNA levels of Sirt2 significantly decreased in joint tissues of mice with CIA. When immunized with collagen, Sirt2-KO mice showed aggravated severity of arthritis based on clinical scores, hind paw thickness, and radiological and molecular findings. Mechanically, Sirt2 deacetylated p65 subunit of nuclear factor-kappa B (NF-?B) at lysine 310, resulting in reduced expression of NF-?B-dependent genes, including interleukin 1? (IL-1?), IL-6, monocyte chemoattractant protein 1(MCP-1), RANTES, matrix metalloproteinase 9 (MMP-9) and MMP-13. Importantly, our rescue experiment showed that Sirt2 re-expression abated the severity of arthritis in Sirt2-KO mice. Those findings strongly indicate Sirt2 as a considerably inhibitor of the development of arthritis.

Lin, Jiangtao [Department of Orthopaedics, Qilu Hospital, Shandong University, 44 Wenhua Xi Road, Jinan, Shandong 250012 (China) [Department of Orthopaedics, Qilu Hospital, Shandong University, 44 Wenhua Xi Road, Jinan, Shandong 250012 (China); Department of Orthopaedics, Yantaishan Hospital, 91 Jiefang Road, Yantai, Shandong 264001 (China); Sun, Bing; Jiang, Chuanqiang; Hong, Huanyu [Department of Orthopaedics, Yantaishan Hospital, 91 Jiefang Road, Yantai, Shandong 264001 (China)] [Department of Orthopaedics, Yantaishan Hospital, 91 Jiefang Road, Yantai, Shandong 264001 (China); Zheng, Yanping, E-mail: yanpingzheng@yahoo.com [Department of Orthopaedics, Qilu Hospital, Shandong University, 44 Wenhua Xi Road, Jinan, Shandong 250012 (China)] [Department of Orthopaedics, Qilu Hospital, Shandong University, 44 Wenhua Xi Road, Jinan, Shandong 250012 (China)

2013-11-29T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

E-Print Network 3.0 - adrenocorticotropic hormone suppresses...  

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

turn triggers the release of the adrenocorticotrope hormone (ACTH). ACTH travels from the brain... Schultheiss, Schiepe, & Rawolle Hormone assays 1 Running head: HORMONE ASSAYS...

302

Vibration suppression, stabilization, motion planning and tracking for flexible beams  

E-Print Network [OSTI]

coil length l ? ) and mechanical sub-system s (damping coe?cient d ? , springspring constant in newtons-per-meter (N/m), l ? is the armature coilcoil resistance R ? was measured with an ohmmeter. The spring

Siranosian, Antranik Antonio

2009-01-01T23:59:59.000Z

303

Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement  

E-Print Network [OSTI]

are at play simultaneously. Furthermore, experiments with single streams of droplets have not been able to elucidate the effects of the onset of boiling (ONB) during the droplet impingement process. Therefore, efforts have been undertaken to consider...

Yang, Yuxuan

2014-05-01T23:59:59.000Z

304

Indirect suppression of photosynthesis on individual leaves by arthropod herbivory  

E-Print Network [OSTI]

. Key words: Chlorophyll fluorescence imaging, thermography, plant­insect interactions, spatial patterns

DeLucia, Evan H.

305

Indirect Suppression of Photosynthesis on Individual Leaves by Arthropod Herbivory  

E-Print Network [OSTI]

of their physiological and ecological impacts. Key words: Chlorophyll fluorescence imaging, thermography, plant

DeLucia, Evan H.

306

J/Psi suppression in ultrarelativistic nuclear collisions  

E-Print Network [OSTI]

circles for Au1Au col- lisions and open circles for S1S collisions. The solid lines are polynomial fits to the above results using the form rc(t)5a01a1t1a2t21a3t3 for tmin,t,tmax , with rc(t) 5rc(tmin) for t,tmin and rc(t)50 for t.tmax . For the par...

Zhang, B.; Ko, Che Ming; Li, Ba; Lin, ZW; Sa, BW.

2000-01-01T23:59:59.000Z

307

acoustic howling suppression: Topics by E-print Network  

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

by the Leningrad unknown authors 15 UNIVERSITY OF CALIFORNIA, SAN DIEGO Acoustic Daylight: passive acoustic imaging Geosciences Websites Summary: UNIVERSITY OF CALIFORNIA, SAN...

308

Optimized pulse sequences for suppressing unwanted transitions in quantum systems  

SciTech Connect (OSTI)

We investigate the nature of the pulse sequence so that unwanted transitions in quantum systems can be inhibited optimally. For this purpose we show that the sequence of pulses proposed by Uhrig [Phys. Rev. Lett. 98, 100504 (2007)] in the context of inhibition of environmental dephasing effects is optimal. We derive exact results for inhibiting the transitions and confirm the results numerically. We posit a very significant improvement by usage of the Uhrig sequence over an equidistant sequence in decoupling a quantum system from unwanted transitions. The physics of inhibition is the destructive interference between transition amplitudes before and after each pulse.

Schroeder, C. A.; Agarwal, G. S. [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St. Norman, Oklahoma 73019 (United States); Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)

2011-01-15T23:59:59.000Z

309

Traveling-wave device with mass flux suppression  

DOE Patents [OSTI]

A traveling-wave device is provided with the conventional moving pistons eliminated. Acoustic energy circulates in a direction through a fluid within a torus. A side branch may be connected to the torus for transferring acoustic energy into or out of the torus. A regenerator is located in the torus with a first heat exchanger located on a first side of the regenerator downstream of the regenerator relative to the direction of the circulating acoustic energy; and a second heat exchanger located on an upstream side of the regenerator. The improvement is a mass flux suppressor located in the torus to minimize time-averaged mass flux of the fluid. In one embodiment, the device further includes a thermal buffer column in the torus to thermally isolate the heat exchanger that is at the operating temperature of the device.

Swift, Gregory W. (Santa Fe, NM); Backhaus, Scott N. (Los Alamos, NM); Gardner, David L. (White Rock, NM)

2000-01-01T23:59:59.000Z

310

Observation of suppressed terahertz absorption in photoexcited graphene  

E-Print Network [OSTI]

When light is absorbed by a semiconductor, photoexcited charge carriers enhance the absorption of far-infrared radiation due to intraband transitions. We observe the opposite behavior in monolayer graphene, a zero-gap ...

Frenzel, Alex James

311

VETERINARY ENTOMOLOGY Suppression of Adult Lesser Mealworm (Coleoptera: Tenebrionidae)  

E-Print Network [OSTI]

- nure has been spread (Axtell 1999). This behavior has resulted in poor community relations and may

Kaufman, Phillip E.

312

Immunotherapy of metastatic melanoma by reversal of immune suppression  

SciTech Connect (OSTI)

Beginning with the observation that the human enteorvirus, Poliovirus Sabin 1, will lyse human melanoma cells in culture, clinical trials involving two patients with advance melanoma were performed. Parenteral injection of the viable Poliovirus into cutaneous melanoma metastases followed in 24 hours by oral administration of cyclophosphamide. The results of these two trials are described.

Biggs, M.W.; Eiselein, J.E.

1997-01-01T23:59:59.000Z

313

Swirl-counter-swirl microjets for thermoacoustic instability suppression  

DOE Patents [OSTI]

Combustor. The combustor includes an axially symmetric tube along with means for introducing fuel and air into the tube. A swirler is disposed within the tube to impart rotation in a first direction to the air/fuel mixture. A plurality of holes downstream of the swirler are disposed around the tube and offset at an angle relative to an inward normal to the tube wall. Air is injected through the offset holes to impart rotation to the air/fuel mixture in a second direction opposite to the first direction. A combustion chamber having a diameter larger than that of the tube receives and burns the air/fuel mixture from the tube.

Ghoniem, Ahmed F; LaBry, Zachary A; Shanbhogue, Santosh J; Speth, Raymond L

2014-04-29T23:59:59.000Z

314

Suppression of premixed combustion dynamics utilizing microjet air injection  

E-Print Network [OSTI]

The problem of thermoacoustic instability in continuous combustion systems is a major challenge in the field of propulsion and power generation. With the current environmental and political pressure that is being placed ...

Hudgins, Duane Edward

2008-01-01T23:59:59.000Z

315

GREATER NEWPORT AND GREENBRIER VALLEY BLACK FLY SUPPRESSION PROGRAM  

E-Print Network [OSTI]

were found to the Pigeon, Little Pigeon, and French Broad Rivers. Several states have implemented (Bti). This material replaced broad-spectrum chemicals in the early 1980's and is now the only

Moulton, Kevin

316

ORTHOGONALLY ANCHORED BLIND INTERFERENCE SUPPRESSION USING THE SATO COST CRITERION  

E-Print Network [OSTI]

by a stochastic gradient algorithm based on this approach is significantly greater than that pro- duced by the LMS. The orthogonally anchored Sato cost function leads to a stochastic gradient algorithm that performs significantly of received sam- ples corresponding to the ith transmitted bit at

Honig, Michael L.

317

Performance analysis of interference suppression techniques for multiple antenna systems  

E-Print Network [OSTI]

Pre-BLAST-DFE Technique for MISO Channels with DecentralizedPrecoding Operating over MISO Frequency Selec- tive Fadingon a Nonlinear Precoder for MISO Channels with Decentralized

Amihood, Patrick

2007-01-01T23:59:59.000Z

318

Alternative approach to fire suppression - Class A, B & C fire...  

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

or battery systems required - Rugged construction and maintenance free - Vibration and Corrosion resistant U N C L A S S I F I E D U N C L A S S I F I E D Operated by the Los...

319

RESEARCH ARTICLES A Conserved Mechanism of Bract Suppression in the  

E-Print Network [OSTI]

ORGANS (UFO) (Hepworth et al., 2006). In addition, several genes with a general role in promoting leaf

Jackson, David

320

Mechanisms of Low Dose Radio-Suppression of Genomic Instability  

SciTech Connect (OSTI)

The major goal of this project is to contribute toward the elucidation of the impact of long term low dose radiation on genomic stability. We have created and characterized novel technologies for delivering long term low dose radiation to animals, and we have studied genomic stability by applying cutting edge molecular analysis technologies. Remarkably, we have found that a dose rate that is 300X higher than background radiation does not lead to any detectable genomic damage, nor is there any significant change in gene expression for genes pertinent to the DNA damage response. These results point to the critical importance of dose rate, rather than just total dose, when evaluating public health risks and when creating regulatory guidelines. In addition to these studies, we have also further developed a mouse model for quantifying cells that have undergone a large scale DNA sequence rearrangement via homologous recombination, and we have applied these mice in studies of both low dose radiation and space radiation. In addition to more traditional approaches for assessing genomic stability, we have also explored radiation and possible beneficial effects (adaptive response), long term effects (persistent effects) and effects on communication among cells (bystander effects), both in vitro and in vivo. In terms of the adaptive response, we have not observed any significant induction of an adaptive response following long term low dose radiation in vivo, delivered at 300X background. In terms of persistent and bystander effects, we have revealed evidence of a bystander effect in vivo and with researchers at and demonstrated for the first time the molecular mechanism by which cells “remember” radiation exposure. Understanding the underlying molecular mechanisms by which radiation can induce genomic instability is fundamental to our ability to assess the biological impact of low dose radiation. Finally, in a parallel set of studies we have explored the effects of heavy iron particle radiation on large scale sequence rearrangements and we have discovered tissue specific differences in sensitivity to homologous recombination. DOE support has given rise to critical new knowledge about the biological impact of low dose rate radiation and about the underlying mechanisms that govern genomic stability in response to radiation exposure. This work has spurred interest in radiation among MIT scientists, and has fostered ongoing research projects that will continue to contribute toward our understanding of the biological effects of low dose radiation exposure.

Engelward, Bevin P

2009-09-16T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Aging, tumor suppression and cancer: High-wire act!  

SciTech Connect (OSTI)

Evolutionary theory holds that aging is a consequence of the declining force of natural selection with age. We discuss here the evidence that among the causes of aging in complex multicellular organisms, such as mammals, is the antagonistically pleiotropic effects of the cellular responses that protect the organism from cancer. Cancer is relatively rare in young mammals, owing in large measure to the activity of tumor suppressor mechanisms. These mechanisms either protect the genome from damage and/or mutations, or they elicit cellular responses--apoptosis or senescence--that eliminate or prevent the proliferation of somatic cells at risk for neoplastic transformation.We focus here on the senescence response, reviewing its causes, regulation and effects. In addition, we describe recent data that support the idea that both senescence and apoptosis may indeed be the double-edged swords predicted by the evolutionary hypothesis of antagonistic pleiotropy--protecting organisms from cancer early in life, but promoting aging phenotypes, including late life cancer, in older organisms.

Campisi, Judith

2004-08-15T23:59:59.000Z

322

Vibration suppression, stabilization, motion planning and tracking for flexible beams  

E-Print Network [OSTI]

Beam PDE v 4 Gain Scheduling-Inspired Control for Nonlinearscheduling based nonlinear control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .gain scheduling based nonlinear control. . . . . ix Figure

Siranosian, Antranik Antonio

2009-01-01T23:59:59.000Z

323

Oil palm phenolics suppresses oxidative stress and inflammation  

E-Print Network [OSTI]

Water-soluble Oil Palm Phenolics (OPP), derived from Elaeis guineensis, contains a unique blend of plant phenolics. Recent cell and animal studies have demonstrated positive health benefits in a number of different organ ...

Sundaresan, Abaya Meenakshi

2013-01-01T23:59:59.000Z

324

Suppression of decoherence in a graphene monolayer ring  

SciTech Connect (OSTI)

The influence of high magnetic fields on coherent transport is investigated. A monolayer graphene quantum ring is fabricated and the Aharonov-Bohm effect is observed. For increased magnitude of the magnetic field, higher harmonics appear. This phenomenon is attributed to an increase of the phase coherence length due to reduction of spin flip scattering.

Smirnov, D., E-mail: smirnov@nano.uni-hannover.de; Rode, J. C.; Haug, R. J. [Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstr. 2, 30167 Hannover (Germany)

2014-08-25T23:59:59.000Z

325

'Catch and Suppress' Control of Instabilities in High Performance  

Office of Science (SC) Website

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched5 Industrial CarbonArticlesHuman ResourcesScienceHome TheFusion Plasmas | U.S. DOE

326

IJS DP 7954 RICH in the ECAL background suppression  

E-Print Network [OSTI]

­alone mode. For completeness we quote here their results. cut eff. s/b (s=b) (s=b) K TRIG =450 K TRIG = 450 0.56 2.9 1. K TRIG = 1000 0.39 6.5 2.2 K TRIG = 450 + e=ß 0.49 4.6 1.6 K TRIG = 1000 + e=ß 0.34 9.3 3.1 K TRIG = 450 + SVD 0.27 12 4.1 K TRIG = 1000 + SVD 0.20 20 6.9 K TRIG = 450 + SVD + e=ß 0.21 23 7. K TRIG

327

Suppression of Rayleigh-scattering-induced noise in OEOs  

E-Print Network [OSTI]

. Docherty, and C. R. Menyuk, "Fiber-induced degradation in RF-over-fiber links," in Proceedings of IEEE) are hybrid RF-photonic devices that promise to be environmentally robust high-frequency RF sources with very noise in in RF-photonic systems," in Proceedings of IEEE Conference on Frequency Control (Institute

Maryland, Baltimore County, University of

328

Multi-band OFDM UWB receiver with narrowband interference suppression  

E-Print Network [OSTI]

of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Ayd?n ?Ilker Kar?s?layan Committee Members, Edgar S?anchez-Sinencio Laszlo Kish Ricardo Gutierrez-Osuna Head of Department, Costas N. Georghiades December 2007 Major Subject... also to thank Dr. Laszlo Kish, who helped me to build solid noise background. I would also thank Dr. Erchin Serpedin for his help and valuable discussion during weekly meetings. I owe special thanks to Kai Shi for the discussion on communication systems...

Kelleci, Burak

2009-05-15T23:59:59.000Z

329

Suppressing qubit dephasing using real-time Hamiltonian estimation  

E-Print Network [OSTI]

Unwanted interaction between a quantum system and its fluctuating environment leads to decoherence and is the primary obstacle to establishing a scalable quantum information processing architecture. Strategies such as environmental and materials engineering, quantum error correction and dynamical decoupling can mitigate decoherence, but generally increase experimental complexity. Here we improve coherence in a qubit using real-time Hamiltonian parameter estimation. Using a rapidly converging Bayesian approach, we precisely measure the splitting in a singlet-triplet spin qubit faster than the surrounding nuclear bath fluctuates. We continuously adjust qubit control parameters based on this information, thereby improving the inhomogenously broadened coherence time ($T_{2}^{*}$) from tens of nanoseconds to above 2 $\\mu$s and demonstrating the effectiveness of Hamiltonian estimation in reducing the effects of correlated noise in quantum systems. Because the technique demonstrated here is compatible with arbitrary qubit operations, it is a natural complement to quantum error correction and can be used to improve the performance of a wide variety of qubits in both metrological and quantum-information-processing applications.

Michael D. Shulman; Shannon P. Harvey; John M. Nichol; Stephen D. Bartlett; Andrew C. Doherty; Vladimir Umansky; Amir Yacoby

2014-05-02T23:59:59.000Z

330

False arrhythmia alarm suppression using ECG, ABP, and photoplethysmogram  

E-Print Network [OSTI]

A signal quality assessment scheme for the photoplethysmogram waveform recorded by a pulse oximeter has been created. The signal quality algorithm uses statistical methods on time-series and spectral analysis to locate ...

Deshmane, Anagha Vishwas

2009-01-01T23:59:59.000Z

331

Precipitates Suppress Mobility Of Metals in Soil and Water  

E-Print Network [OSTI]

and water with hazardous metals ­ such as cadmium, copper, lead, and nickel ­ is a national environ- mental increased over time. This increase may be due to activi- ties at industries like tanneries and smelters

Sparks, Donald L.

332

To: The Wesleyan Community From: Nicole Updegrove `14  

E-Print Network [OSTI]

. Administrative responses, when present, are scattered across Argus and Wesleying articles, official blogs discussions of a new academic calendar during the 2012-2013 academic year. - Continue efforts to increase Academic - Low-inc

Royer, Dana

333

INMM 54th Annual Meeting, July 14-18, 2013, JW Marriott Desert Springs, Palm Desert, California USA Comprehensive Nuclear Material Surveillance with a  

E-Print Network [OSTI]

network and/or the Internet. In conjunction with available in-vehicle cellular and satellite communication, and humiditycomprehensive autonomous monitoring of sensitive nuclear materials is now feasible with the ARG-US RFID system

Kemner, Ken

334

Outlook for U.S. shale oil and gas  

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

Argus Americas Crude Summit January 22, 2014 | Houston, TX By Adam Sieminski, EIA Administrator Six key plays account for nearly all recent growth in oil and natural gas production...

335

PHASE II VAULT TESTING OF THE ARGONNE RFID SYSTEM  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) (Environmental Management [EM], Office of Packaging and Transportation [EM-45]) Packaging and Certification Program (DOE PCP) has developed a Radio Frequency Identification (RFID) tracking and monitoring system, called ARG-US, for the management of nuclear materials packages during transportation and storage. The performance of the ARG-US RFID equipment and system has been fully tested in two demonstration projects in April 2008 and August 2009. With the strong support of DOE-SR and DOE PCP, a field testing program was completed in Savannah River Site's K-Area Material Storage (KAMS) Facility, an active Category I Plutonium Storage Facility, in 2010. As the next step (Phase II) of continued vault testing for the ARG-US system, the Savannah River Site K Area Material Storage facility has placed the ARG-US RFIDs into the 910B storage vault for operational testing. This latest version (Mark III) of the Argonne RFID system now has the capability to measure radiation dose and dose rate. This paper will report field testing progress of the ARG-US RFID equipment in KAMS, the operability and reliability trend results associated with the applications of the system, and discuss the potential benefits in enhancing safety, security and materials accountability. The purpose of this Phase II K Area test is to verify the accuracy of the radiation monitoring and proper functionality of the ARG-US RFID equipment and system under a realistic environment in the KAMS facility. Deploying the ARG-US RFID system leads to a reduced need for manned surveillance and increased inventory periods by providing real-time access to status and event history traceability, including environmental condition monitoring and radiation monitoring. The successful completion of the testing program will provide field data to support a future development and testing. This will increase Operation efficiency and cost effectiveness for vault operation. As the next step (Phase II) of continued vault testing for the ARG-US system, the Savannah River Site K Area Material Storage facility has placed the ARG-US RFIDs into the 910B storage vault. Deploying the ARG-US RFID system lends to a reduced need for manned surveillance and increased inventory periods by providing real-time access to status and event history traceability, including radiation and environmental monitoring. The successful completion of the testing program will provide field data to support future development and testing.

Willoner, T.; Turlington, R.; Koenig, R.

2012-06-25T23:59:59.000Z

336

Compliance Status 2011 SITE ENVIRONMENTAL REPORT  

E-Print Network [OSTI]

. Emissions of nitrogen oxides, carbon monoxide, and sulfur dioxide from the Central Steam Facility were all within permit limits. There were no unexpected opacity excursions noted during the year for either Boiler 6 or Boiler 7; opacity excursions were only noted during testing periods. Halon portable fire

337

Suppressing Multi-Channel Ultra-Low-Field MRI Measurement Noise Using Data Consistency and Image  

E-Print Network [OSTI]

SQUID sensors demonstrate the effectiveness of this data consistency constraint and sparsity prior-mail: fhlin@ntu.edu.tw Introduction MRI has become an indispensible resource in clinical medicine because

338

A Fault Tolerant 3-Phase Adjustable Speed Drive Topology with Common Mode Voltage Suppression  

E-Print Network [OSTI]

...................................................................................... 82 1 I INTRODUCTION I.1. Introduction Electric energy is a major source of energy all over the world. The estimated cumulative annual electric energy production of the world in 2011 was 22.126 TkW-hr [1]. This generation is projected... to increase up to 39 TkW-hr by 2040 [2]. According to International Energy Statistics, in 2011 United States domestic electricity consumption was 4.12 TkW-hr [1]. Out of this, in United States, about 38% of all electric energy is consumed by motor driven...

Garg, Pawan

2014-05-21T23:59:59.000Z

339

Facilitating Memory for Novel Characters by Reducing Neural Repetition Suppression in the Left Fusiform Cortex  

E-Print Network [OSTI]

deficits in developmental dyslexia? Brain 9. Shaywitz BA,children with developmental dyslexia. Biological Psychiatry2009) Children with dyslexia lack multiple specializations

Xue, Gui; Mei, Leilei; Chen, Chuansheng; Lu, Zhong-Lin; Poldrack, Russell A.; Dong, Qi

2010-01-01T23:59:59.000Z

340

E-Print Network 3.0 - acid suppression predict Sample Search...  

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

the situation... the cloud condensation nucleus activity of organic acids on the basis of surface tension and osmolality... in the solutions of organic acids. The surface tension...

Note: This page contains sample records for the topic "argus halon suppression" 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

Techniques for noise suppression and robust control in spin-based quantum information processors  

E-Print Network [OSTI]

Processing information quantum mechanically allows the relatively efficient solution of many important problems thought to be intractable on a classical computer. A primary challenge in experimentally implementing a quantum ...

Borneman, Troy William

2013-01-01T23:59:59.000Z

342

Dust suppression characteristics of mineral oil when applied to corn, wheat, or soybeans  

E-Print Network [OSTI]

and must be added repeatedly. Several water applications could raise the mo i stu re content of grain to the point of encouraging mold growth. Peterson (1977) reported that an average worker wi 1 1 breathe from 4 to 10 m of air during an eight hour work... Jones, B. S. , Texas Al!M University Chairman of Advisory Committee: Dr. Calvin B. Parnell, Jr. Corn, wheat, and soybean samples weighing 454 g each were treated with mineral oil at rates of 50, 100, 200, 400, and 600 ppm and grain dust...

Jones, David Don

1986-01-01T23:59:59.000Z

343

Power pre-emphasis for suppression of FWM in coherent optical OFDM transmission  

E-Print Network [OSTI]

, "Equalization in amplified WDM lightwave transmission systems," Photonics Technol. Lett. 4(8), 920­922 (1992). 15. E. Ciaramella, L. Giorgi, A. D'Errico, F. Cavaliere, G. Gaimari, and G. Prati, "A highly

Turitsyn, Sergei K.

344

Bacterial Effector HopF2 Suppresses Arabidopsis Immunity by Targeting BAK1  

E-Print Network [OSTI]

fluorescence protein GST glutathione-S-transferase HA hemagglutinin HrpZ harpin Z LPS lipopolysaccharide LRR leucine-rich repeat MAPK mitogen-activated protein kinase MKK5 MAPK kinase 5 NB-LRR nucleotide binding domain leucine-rich repeat NPP1 necrosis... ............................................................. 12 Plant materials and growth conditions ....................................................................... 12 Plasmid construction and generation of transgenic plants ......................................... 12 Pathogen assay...

Zhou, Jinggeng

2013-07-19T23:59:59.000Z

345

Observation of angle-modulated switch between enhancement and suppression of nonlinear  

E-Print Network [OSTI]

interaction of four-wave mixing image," Opt. Express 19(14), 13675­13685 (2011). 2. N. Li, Z. Zhao, H. Chen, P-Banacloche, "Measurement of dispersive properties of electromagnetically induced transparency in rubidium atoms," Phys. Rev. Li, L. M. Narducci, A. M. Lyyra, and F. C. Spano, "Autler-Townes splitting in molecular lithium

Wu, Shin-Tson

346

Circuit for echo and noise suppression of acoustic signals transmitted through a drill string  

DOE Patents [OSTI]

An electronic circuit for digitally processing analog electrical signals produced by at least one acoustic transducer is presented. In a preferred embodiment of the present invention, a novel digital time delay circuit is utilized which employs an array of First-in-First-out (FiFo) microchips. Also, a bandpass filter is used at the input to this circuit for isolating drill string noise and eliminating high frequency output. 20 figures.

Drumheller, D.S.; Scott, D.D.

1993-12-28T23:59:59.000Z

347

Sulfur pollution suppression of the wetland methane source in the 20th and 21st centuries  

E-Print Network [OSTI]

. Emission of this powerful greenhouse gas from wet- lands is known to depend on climate, with increasing are likely due to factors other than the global warming of wetlands. Atmospheric methane (CH4) is a powerful greenhouse gas (GHG) that is responsible for an estimated 22% of the present anthropogenically enhanced

348

The role of NK cells in selectin-dependent tumor suppression  

E-Print Network [OSTI]

Selectins are a small family of adhesion molecules that are critical for immune cell trafficking. In our laboratory, mice lacking all combinations of selectins have been generated. Previous work from our laboratory has ...

Sobolev, Olga, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

349

Intelligent portal monitor for fast suppression of false positives due to radiopharmaceuticals  

SciTech Connect (OSTI)

Monitoring the movement of radioactive material through secure or sensitive areas may be complicated by the existence of unanticipated sources of radiation carried by individuals passing through the area. Typical of such sources are radiopharmaceuticals prescribed for a medical procedure. We report here on an apparatus designed to quickly discriminate between in-vivo radiopharmaceuticals and other nuclear materials, based on a pattern-recognition algorithm and a microcomputer. Principles of operation are discussed, and the data base for the pattern-recognition algorithm is displayed. Operating experience with the apparatus in a trial location is also discussed. Our apparatus correctly identifies in-vivo radiopharmaceuticals in over 80% of all trials; challenges with radioisotopes other than radiopharmaceuticals have led the apparatus, without exception, to reject the challenge isotope as incompatible with medical practice. The apparatus thus rapidly discriminates between individuals bearing radiopharmaceuticals and those bearing illicit sources, such as special nuclear materials. Examples of applications are presented. 7 refs., 4 figs., 1 tab.

Johnson, M.W.; Butterfield, K.B.

1985-01-01T23:59:59.000Z

350

Investigation of the effectiveness of smoke suppressant fuel additives for turbojet applications. Master's thesis  

SciTech Connect (OSTI)

Seven fuel additives were tested to investigate their effectiveness at reducing exhaust stack gas opacity in a turbojet test cell. Exhaust particle sizes and mass concentrations were determined at the engine and stack exhausts using measurements of light transmittance at three frequencies. Particle samples were also collected at the engine exhaust and measured with a scanning electron microscope to verify the optical technique. Nitrous oxide emissions were measured at the test cell stack exhaust. Four of the additives tested were found effective at reducing stack exhaust opacity and particulate mass concentration. None of the additives had any measurable effect on particle diameters. No meaningful changes in particle size or mass occurred between the engine and stack exhausts. The optical technique for determining particle size was verified effective using the scanning electron microscope. No additive had any significant effect on nitrous oxide production.

Bramer, J.R.

1982-10-01T23:59:59.000Z

351

Parasitic oscillation suppression in solid state lasers using absorbing thin films  

DOE Patents [OSTI]

A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber. 16 figs.

Zapata, L.E.

1994-08-02T23:59:59.000Z

352

Parasitic oscillation suppression in solid state lasers using absorbing thin films  

DOE Patents [OSTI]

A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber.

Zapata, Luis E. (Livermore, CA)

1994-01-01T23:59:59.000Z

353

MicroRNAs-449a and -449b exhibit tumor suppressive effects in retinoblastoma  

SciTech Connect (OSTI)

Highlights: •We validate miR-449a/b expression in primary human retinoblastomas and cell lines. •Exogenous miRs-449a/b inhibited proliferation in retinoblastoma cell lines. •Exogenous miRs-449a/b increased apoptosis in retinoblastoma cell lines. •miRs-449a/b could serve as viable therapeutic targets for retinoblastoma treatment. -- Abstract: Retinoblastoma is the most common pediatric cancer of the eye. Currently, the chemotherapeutic treatments for retinoblastoma are broad-based drugs such as vincristine, carboplatin, or etoposide. However, therapies targeted directly to aberrant signaling pathways may provide more effective therapy for this disease. The purpose of our study is to illustrate the relationship between the expressions of miRs-449a and -449b to retinoblastoma proliferation and apoptosis. We are the first to confirm an inhibitory effect of miR-449a and -449b in retinoblastoma by demonstrating significantly impaired proliferation and increased apoptosis of tumor cells when these miRNAs are overexpressed. This study suggests that these miRNAs could serve as viable therapeutic targets for retinoblastoma treatment.

Martin, Alissa [Division of Hematology, Oncology, and Stem Cell Transplantation, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611 (United States)] [Division of Hematology, Oncology, and Stem Cell Transplantation, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611 (United States); Jones, Aunica [Cancer Biology and Epigenomics Program, Ann and Robert H. Lurie Children’s Hospital of Chicago Research Center, Chicago, IL 60611 (United States)] [Cancer Biology and Epigenomics Program, Ann and Robert H. Lurie Children’s Hospital of Chicago Research Center, Chicago, IL 60611 (United States); Bryar, Paul J. [Departments of Ophthalmology and Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611 (United States)] [Departments of Ophthalmology and Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611 (United States); Mets, Marilyn [Division of Ophthalmology, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611 (United States) [Division of Ophthalmology, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611 (United States); Department of Ophthalmology, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611 (United States); Weinstein, Joanna [Department of Pediatrics, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611 (United States) [Department of Pediatrics, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611 (United States); Division of Hematology, Oncology, and Stem Cell Transplantation, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611 (United States); Zhang, Gang [Biostatistics Research Core, Ann and Robert H. Lurie Children’s Hospital of Chicago Research Center, Chicago, IL 60611 (United States)] [Biostatistics Research Core, Ann and Robert H. Lurie Children’s Hospital of Chicago Research Center, Chicago, IL 60611 (United States); Laurie, Nikia A., E-mail: n-laurie@northwestern.edu [Cancer Biology and Epigenomics Program, Ann and Robert H. Lurie Children’s Hospital of Chicago Research Center, Chicago, IL 60611 (United States); Department of Pediatrics, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611 (United States)

2013-11-01T23:59:59.000Z

354

HE3286, an oral synthetic steroid, treats lung inflammation in mice without immune suppression  

E-Print Network [OSTI]

implications for therapy. Treat Respir Med 2004, 3:147-59.as a potential agent to treat autoimmune diseases. Autoimmunan oral synthetic steroid, treats lung inflammation in mice

2010-01-01T23:59:59.000Z

355

RhoJ Regulates Melanoma Chemoresistance by Suppressing Pathways that Sense DNA Damage  

E-Print Network [OSTI]

s t-test IPA-3 alone in the same dose. C.purchased from Sigma and IPA-3 was purchased from Tocrispopulation. $watermark-text IPA-3 Cisplatin sensitization

Ho, Hsiang; Aruri, Jayavani; Kapadia, Rubina; Mehr, Hootan; White, Michael A.; Ganesan, Anand K.

2012-01-01T23:59:59.000Z

356

E-Print Network 3.0 - accumulation phase fat-suppressed Sample...  

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

75 DESIGN OF A 2.2 GEV ACCUMULATOR AND COMPRESSOR FOR A NEUTRINO FACTORY Summary: DESIGN OF A 2.2 GEV ACCUMULATOR AND COMPRESSOR FOR A NEUTRINO FACTORY B. Autin, R. Cappi,...

357

Regulatory T Cells Expanded from Hiv-1-Infected Individuals Maintain Phenotype, Tcr Repertoire and Suppressive Capacity  

E-Print Network [OSTI]

While modulation of regulatory T cell (Treg) function and adoptive Treg transfer are being explored as therapeutic modalities in the context of autoimmune diseases, transplantation and cancer, their role in HIV-1 pathogenesis ...

Angin, Mathieu

358

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

SciTech Connect (OSTI)

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

359

Suppression of thermoacoustic instabilities in a swirl combustor through microjet air injection  

E-Print Network [OSTI]

Thermoacoustic or combustion instability, a positive feedback loop coupling heat release rate and acoustic oscillations in a combustor, is one of the greatest challenges currently facing the development of new gas turbine ...

LaBry, Zachary Alexander

2010-01-01T23:59:59.000Z

360

Oxidative stress suppresses the cellular bioenergetic effect of the 3-mercaptopyruvate sulfurtransferase/hydrogen sulfide pathway  

SciTech Connect (OSTI)

Highlights: •Oxidative stress impairs 3-MST-derived H{sub 2}S production in isolated enzyme and in isolated mitochondria. •This impairs the stimulatory bioenergetic effects of H{sub 2}S in hepatocytes. •This has implications for the pathophysiology of diseases with oxidative stress. -- Abstract: Recent data show that lower concentrations of hydrogen sulfide (H{sub 2}S), as well as endogenous, intramitochondrial production of H{sub 2}S by the 3-mercaptopyruvate (3-MP)/3-mercaptopyruvate sulfurtransferase (3-MST) pathway serves as an electron donor and inorganic source of energy to support mitochondrial electron transport and ATP generation in mammalian cells by donating electrons to Complex II. The aim of our study was to investigate the role of oxidative stress on the activity of the 3-MP/3-MST/H{sub 2}S pathway in vitro. Hydrogen peroxide (H{sub 2}O{sub 2}, 100–500 ?M) caused a concentration-dependent decrease in the activity of recombinant mouse 3-MST enzyme. In mitochondria isolated from murine hepatoma cells, H{sub 2}O{sub 2} (50–500 ?M) caused a concentration-dependent decrease in production of H{sub 2}S from 3-MP. In cultured murine hepatoma cells H{sub 2}O{sub 2}, (3–100 ?M), did not result in overall cytotoxicity, but caused a partial decrease in basal oxygen consumption and respiratory reserve rapacity. The positive bioenergetic effect of 3-MP (100–300 nM) was completely abolished by pre-treatment of the cells with H{sub 2}O{sub 2} (50 ?M). The current findings demonstrate that oxidative stress inhibits 3-MST activity and interferes with the positive bioenergetic role of the 3-MP/3-MST/H{sub 2}S pathway. These findings may have implications for the pathophysiology of various conditions associated with increased oxidative stress, such as various forms of critical illness, cardiovascular diseases, diabetes or physiological aging.

Módis, Katalin [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States)] [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States); Asimakopoulou, Antonia [Laboratory of Molecular Pharmacology, Department of Pharmacy, University of Patras, Patras (Greece)] [Laboratory of Molecular Pharmacology, Department of Pharmacy, University of Patras, Patras (Greece); Coletta, Ciro [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States)] [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States); Papapetropoulos, Andreas [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States) [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States); Laboratory of Molecular Pharmacology, Department of Pharmacy, University of Patras, Patras (Greece); Szabo, Csaba, E-mail: szabocsaba@aol.com [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States)] [Department of Anesthesiology, University of Texas Medical Branch and Shriners Burns Hospital for Children, Galveston, TX (United States)

2013-04-19T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Suppression of the Rhines effect and the location of vortices on Saturn A. B. Penny,1  

E-Print Network [OSTI]

at the equator that peaks in velocity near 470 m s�1 [Smith et al., 1981, 1982; Sa´nchez-Lavega et al., 2000 spectrometer (VIMS) [Choi et al., 2009], which have provided insight into the complex nature of the flow below Saturn's cloud layer (Figure 1). VIMS is able to see features below the relatively featureless haze layer

Choi, David S.

362

Technical evaluation of equipment maintenance on fire alarm detection, suppression, and signaling  

SciTech Connect (OSTI)

This document delineates the application of WHC-CM-4-3, Program E-2 to Fire Systems on the Hanford Site.

Korslund, S.M.

1994-10-01T23:59:59.000Z

363

E-Print Network 3.0 - androgen suppression therapy Sample Search...  

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

Materials Science 27 The Prostate 64:128 138 (2005) Evidence for Downregulation of Calcium Signaling Summary: of neuroendo- crine prostate cells. Calcium induced apoptosis...

364

E-Print Network 3.0 - auraptene suppresses cyclin Sample Search...  

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

Bioscience Summary: -publication: http:www.landesbioscience.comjournalsccabstract.php?id3262 KEY WORDS cyclin A, apoptosis, Xenopus... , embryos, midblastula transition...

365

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

SciTech Connect (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

366

Noise Suppression using a Perceptual Model for Wideband Speech Signals Joachim Thiemann  

E-Print Network [OSTI]

is derived from a method devel- oped by Soulodre [2] to remove camera noise from film soundtracks. Soulodre[n, p] (where p denotes the frame counter) is windowed by a window obtained from the square root of the Hann window, defined by h[n] = 1 2 1 - cos 2 n + 0.5 NF , (1) where n = 0, . . . , NF - 1. The f

Kabal, Peter

367

E-Print Network 3.0 - androgen suppression updated Sample Search...  

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

Collection: Environmental Sciences and Ecology 29 Does testosterone mediate the trade-off between nestling begging and growth in the canary (Serinus canaria)? Summary:...

368

E-Print Network 3.0 - adult suppression system Sample Search...  

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

growth between ... Source: Chatterjee, Monita - Program in Neuroscience and Cognitive Science, University of Maryland at College Park Collection: Biology and Medicine 2...

369

E-Print Network 3.0 - amino acids suppresses Sample Search Results  

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

be ... Source: Knight, Rob - Department of Chemistry and Biochemistry, University of Colorado at Boulder Collection: Environmental Sciences and Ecology ; Biotechnology ;...

370

Suppression of Quantum Dot Blinking in DTT-Doped Polymer Films Josh Antelman,,  

E-Print Network [OSTI]

, Department of Physiology, and DOE Institute for Genomics and Proteomics, UniVersity of California, Los a charge carrier is ejected from the core (via an Auger process or charge tunneling) and trapped on its nonradiatively, resulting in a "dark" QD. This lasts until the core charge is neutralized. One of the major

Michalet, Xavier

371

Measurement of Tc suppression in tungsten using magnetic impurities B. A. Younga)  

E-Print Network [OSTI]

AND BACKGROUND Thin films of superconducting materials have been used as phonon sensors for many years. The exact design of pho- non sensors varies according to the intended applications.1 For example, some of superconducting aluminum and tungsten.2 These phonon sensors are called ``W/Al quasi-particle-trap- assisted

California at Berkeley, University of

372

Mechanical fluctuations suppress the threshold of soft-glassy solids : the secular drift scenario  

E-Print Network [OSTI]

We propose a dynamical mechanism leading to the fluidization of soft-glassy amorphous mate-rial driven below the yield-stress by external mechanical fluctuations. The model is based on the combination of memory effect and non-linearity, leading to an accumulation of tiny effects over a long-term. We test this scenario on a granular packing driven mechanically below the Coulomb threshold. We bring evidences for an effective viscous response directly related to small stress modulations in agreement with the theoretical prediction of a generic secular drift.

Adeline Pons; Axelle Amon; Thierry Darnige; Jérôme Crassous; Eric Clément

2014-12-10T23:59:59.000Z

373

Bcl-2 Suppresses Sarcoplasmic/Endoplasmic Reticulum Ca2+-ATPase Expression in Cystic Fibrosis Airways  

E-Print Network [OSTI]

signaling and apoptosis in CF. These findings decrease the likelihood of therapeutic benefit of SERCA inhibition in CF. Keywords: cystic fibrosis; SERCA2; pulmonary epithelium; ER Cystic fibrosis (CF) is caused by mutations in the cystic fibrosis... in the endoplasmic reticulum (ER) and rapid intracellular degradation. For these reasons, DF508 CFTR fails to function as a cAMP-activated Cl2 channel (1). Previous reports have indicated that sarcoendoplasmic re- ticulum calcium ATPase (SERCA) inhibitors can...

Ahmad, Shama; Ahmad, Aftab; Dremina, Elena S.; Sharov, Victor S.; Guo, Xiaoling; Jones, Tara N.; Loader, Joan E.; Tatreau, Jason R.; Perraud, Anne-Laure; Schö neich, Christian; Randell, Scott H.; White, Carl W.

2009-05-01T23:59:59.000Z

374

Suppressing the influence of additive noise on the Kalman gain for low residual noise speech enhancement  

E-Print Network [OSTI]

present a detailed analysis of the Kalman filter for the application of speech enhancement and identify: Kalman filtering; Speech enhancement; Linear prediction; Dolph-Chebycher windows 1. Introduction In the problem of speech enhancement, where a speech signal corrupted by noise is given, we are primarily

375

E-Print Network 3.0 - acd11 suppress cell Sample Search Results  

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

of California at San Diego Collection: Biology and Medicine 27 Visual perception Solomon & Pelli, 1994 Summary: to perception 28 12;Neurophysiology 40 20...

376

Suppressing tin whisker growth in lead-free solders and platings  

DOE Patents [OSTI]

A process of irradiation Sn containing Pb-free solder to mitigate whisker formation and growth thereon is provided. The use of gamma radiation such as cobalt-60 has been applied to a substrate of Sn on copper has been found to change the morphology of the crystalline whisker growth to a more truncated hillock pattern. The change in morphology greatly reduces the tendency of whiskers to contribute to electrical short-circuits being used as a Pb-free solder system on a copper substrate.

Hoffman, Elizabeth N; Lam, Poh-Sang

2014-04-29T23:59:59.000Z

377

Modeling and Performance of Pyroelectric Detector Lithium Niobate under Ringing Signal Suppression  

E-Print Network [OSTI]

LiNbO 3 ) is an excellent photo sensor that can be used inin narrow band gap photo sensors. The added cooling

Peng, Gary Meng Kiang

2013-01-01T23:59:59.000Z

378

Saccadic suppression during reading activity : is the spill-over effect weaker after a longer saccade?   

E-Print Network [OSTI]

Although it has generally thought that the duration of saccades should be subtracted from the reading time in eye movement research, Irwin (1998) has demonstrated that lexical processing such as word recognition is not ...

Yatabe, Kiyomi

2006-01-01T23:59:59.000Z

379

Method and system for suppression of stimulated Raman scattering in laser materials  

DOE Patents [OSTI]

A composition of matter is provided having the general chemical formula K(H,D).sub.2P(.sup.16O.sub.x,.sup.18O.sub.y).sub.4, where x<0.998 or y>0.002, and x+y.apprxeq.1. Additionally, a method of fabricating an optical material by growth from solution is provided. The method includes providing a solution including a predetermined percentage of (H,D).sub.2.sup.16O and a predetermined percentage of (H,D).sub.2.sup.18O, providing a seed crystal, and supporting the seed crystal on a platform. The method also includes immersing the seed crystal in the solution and forming the optical material. The optical material has the general chemical formula K(H,D).sub.2P(.sup.16O.sub.x,.sup.18O.sub.y).sub.4, where x<0.998 or y>0.002, and x+y.apprxeq.1.

Caird, John A; Bayramian, Andrew J; Ebbers, Christopher A

2013-11-19T23:59:59.000Z

380

Anger Suppression and Depressive Symptoms among Chinese Women in the United States  

E-Print Network [OSTI]

status (Carmony & DiGiuseppe, 2003). Both Miller and Surrey (1997) and Lerner (1985) pointed out that women?s anger is often considered a ?taboo? topic in the society because outward expression of anger is inconsistent with gender expectations placed... and Surrey (1997) further suggested that the cultural fear of women?s anger was based on women?s caretaking responsibilities. That is, because caretakers nurture, they should not get angry. In addition, as part of the caretaking responsibilities women...

Chen, Sylvia

2010-01-14T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Closed-Loop Control of Lift for Longitudinal Gust Suppression at Low Reynolds Numbers  

E-Print Network [OSTI]

Kerstens Illinois Institute of Technology, Chicago, Illinois 60616 Jens Pfeiffer Technical University of Berlin, 10623 Berlin, Germany David Williams Illinois Institute of Technology, Chicago, Illinois 60616 with a quasi-steady approach, such as extending the range and endurance of flight vehicles by energy extraction

Dabiri, John O.

382

Automated suppression of errors in LTP-II slope measurements with x-ray optics  

E-Print Network [OSTI]

slope measurements with x-ray optics Zulfiqar Ali, Curtis L.with state-of-the-art x-ray optics. Significant suppressionscanning, metrology of x-ray optics, deflectometry Abstract

Ali, Zulfiqar

2011-01-01T23:59:59.000Z

383

Automated suppression of errors in LTP-II slope measurements with x-ray optics  

E-Print Network [OSTI]

precise reflective X-ray optics,” Nucl. Instrum. and Methods70 (2001). [2] P. Z. Takacs, “X- ray optics metrology,” in [Handbook of Optics], 3rd ed. , Vol. V, M. Bass, Ed. ,

Ali, Zulfiqar

2012-01-01T23:59:59.000Z

384

The evolution of information suppression in communicating robots with conflicting interests  

E-Print Network [OSTI]

containing a food and a poison source that both emitted red light. The food and poison sources were placed- cifics. Here we use a system of experimental evolution with robots foraging in an arena containing a food with their cameras. Over the first few generations, the robots quickly evolved to successfully locate the food, while

Floreano, Dario

385

Nutrient chemotaxis suppression of a diffusive instability in bacterial colony dynamics Scott Arouh and Herbert Levine  

E-Print Network [OSTI]

on a semisolid agar surface have been observed to form branching patterns as the colony envelope propagates number s : 87.10. e When bacteria are grown on a semisolid agar surface, their resultant colonies have conditions nutrient levels, agar hardness, tem- perature . These include spots and rings in Salmonella typh

Levine, Herbert

386

Caenorhabditis elegans NPR-1–mediated behaviors are suppressed in the presence of mucoid bacteria  

E-Print Network [OSTI]

Caenorhabditis elegans exhibits a diverse range of behaviors in response to bacteria. The presence of bacterial food influences C. elegans aerotaxis, aggregation, locomotion, and pathogen avoidance behaviors through the ...

Reddy, Kirthi C.

387

Assessment of compost for suppression of Fusarium Patch (Microdochium nivale) and Typhula Blight  

E-Print Network [OSTI]

used for manage- ment of these diseases, the high frequency of chemical use, associated costs Department of Environmental Biology, University of Guelph, Guelph, Ont., Canada NIG 2W1 Received 2 October (recovery from disease and/or winter dormancy) compared to fertilizer and fungicide controls (P

Boland, Greg J.

388

E-Print Network 3.0 - active ringing suppression Sample Search...  

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

189 (2007) 493522 www.elsevier.comlocateicarus Summary: in Saturn's rings Richard G. French a, , Heikki Salo b , Colleen A. McGhee a , Luke Dones c a Astronomy... variations in...

389

Deconvolution imaging conditions and cross-talk suppression Travis L. Poole1  

E-Print Network [OSTI]

the possi- bility of eliminating crosstalk i.e., energy in the image due to reflected energy arriving at a location at the same time as inci- dent energy that did not cause the reflected energy when the full up imperfect deconvolution, finite apertures lead to some of the signal being lost, and an assumption

390

E-Print Network 3.0 - azithromycin suppresses interleukin-12p40...  

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

risk. In addition to antibiotic effects, azithromycin has... , randomized, double-blind, pla- cebo-controlled study evaluated the efficacy of azithromycin in reducing Source:...

391

The effects of acceptance and suppression on anticipation and receipt of painful stimulation  

E-Print Network [OSTI]

(Miles & Gross, 1999) and/or experiential (Campbell-Sills, Barlow, Brown, & Hofmann, 2006; Feldner (Campbell-Sills et al., 2006; Gross & Levenson, 1993, 1997; Gross, 1998, 2002; Hofmann, Heering, Sawyer

Gross, James J.

392

Suppression of Phase Separation in LiFePO 4 Nanoparticles During Battery Discharge  

E-Print Network [OSTI]

Using a novel electrochemical phase-field model, we question the common belief that LiXFePO? nanoparticles always separate into Li-rich and Li-poor phases during battery discharge. For small currents, spinodal decomposition ...

Bai, Peng

393

Effects of Aging on Experimentally Instructed Detached Reappraisal, Positive Reappraisal, and Emotional Behavior Suppression  

E-Print Network [OSTI]

, 2005; Coats & Blanchard-Fields, 2008) and problem solving when facing a nonsocial stressor (e.g., Blanchard- Fields, 2007; Coats & Blanchard-Fields, 2008). Emotion regulation is not a single process is typically geared toward reducing negative emotion, and evidence that overall levels of negative emotion

Levenson, Robert W.

394

E-Print Network 3.0 - acupuncture suppresses morphine Sample...  

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

morphine Page: << < 1 2 3 4 5 > >> 1 Investigation of the large-scale functional brain networks modulated by acupuncture Summary: microinjection of naloxone on acupuncture-...

395

E-Print Network 3.0 - androgen suppression combined Sample Search...  

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

doi: 2007 21: 2005-2017Genes & Dev. Summary: . Bolton, Alex Y. So, Christina Chaivorapol, Christopher M. Haqq, Hao Li and Keith R. Yamamoto androgen... by the androgen receptor...

396

Mechanical Overstimulation of Hair Bundles: Suppression and Recovery of Active Motility  

E-Print Network [OSTI]

Motility . . . . . . . . . . . . . . . . . . MechanicalChannels upon Spontaneous Mechanical Oscillations in HairJ. , 101, 603 (2011) Mechanical Overstimulation of Hair

KAO, ALBERT

2013-01-01T23:59:59.000Z

397

Dust suppression results using mineral oil applications on corn and milo  

E-Print Network [OSTI]

distribution (MCPSD) analysis, to determine the amount and particle size of the dust captured on the grain surface. Statistical analyses were performed on the effects due to dust concentration, mineral oil application and mineral oil*dust interaction. Each... TO CORN BENEFITS OF ADDING MINERAL OIL TO MILO 96 . 97 23 TREATMENT DESCRIPTION OP CORN SAMPLES USED FOR TESTING. 104 TREATMENT DESCRIPTION OF MILO SAMPLES USED FOR TESTING, . . . . . . . . . . . . . . PARTICLE SIZE DISTRIBUTION STATISTICS...

Wardlaw, Herman Douglas

1987-01-01T23:59:59.000Z

398

5-Hydroxy-L-tryptophan suppresses food intake in food-deprived and stressed rats  

E-Print Network [OSTI]

- hydroxy-L-tryptophan (5-HTP), serotonin's immediate intracellular precursor, has been thought inhibitor to protect 5-HTP from destruction outside the brain. We have examined the effect of 5-HTP on food consumption and tissue 5-HTP levels among rats subjected to two different hyperphagic stimuli, food

Wurtman, Richard

399

The effect of an evaporation suppressant upon the liquid film oxygen transfer coefficient  

E-Print Network [OSTI]

" ? By Winkler Method 32 Oxygen Transfer Coefficient At 21'C Using Distilled Water Without "Aquasave" ? By Winkler Method 33 Oxygen Transfer Coefficient At 36'C Using Distilled Water With "Aquasave" ? By Winkler Method 34 Oxygen Transfer Coefficient At 36'C... Using Distilled Water Without "Aquasave" ? By Winkler Method 35 Oxygen Transfer Coefficient At 21'C Using Blended Water With "Aquasave" ? By D. O. Meter 37 10. Oxygen Transfer Coefficient At 21'C Using Blended Water Without "Aquasave" ? By D. 0...

Amad, Mohamad Towfic

1967-01-01T23:59:59.000Z

400

E-Print Network 3.0 - acutely suppresses serum Sample Search...  

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

and Medicine ; Environmental Sciences and Ecology 47 Practice research in the field of gout Clinical pharmacology of antihyperuricemic drugs Summary: for quantification of...

Note: This page contains sample records for the topic "argus halon suppression" 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

Basic FGF and suppression of BMP signaling sustain undifferentiated proliferation of human ES cells  

E-Print Network [OSTI]

JAK/Stat3 signaling, and activated Stat3 is sufficient to sustain undifferentiated proliferation synergize with LIF to maintain self-renewal of mouse ES cells by inducing expression of Id genes7. Addition of LIF to culture medium1 or activation of Stat3 (ref. 8) does not sustain hESCs in conditions that would

Cai, Long

402

Astrophotonic OH suppression for deep ground-based near-infrared spectroscopy.  

E-Print Network [OSTI]

??The study of the astrophysics of galaxies in the early Universe requires deep near-infrared spectroscopy in order to measure the key diagnostic rest-frame ultraviolet and… (more)

Trinh, Christopher

2013-01-01T23:59:59.000Z

403

Energy Dependence of Solar Neutrino Suppression and Bounds on the Neutrino Magnetic Moment  

E-Print Network [OSTI]

An analysis of neutrino electron scattering as applied to the SuperKamiokande solar neutrino experiment with the data from the Homestake experiment leads to an upper bound on the neutrino magnetic moment in the range $\\mu_{\

Joao Pulido; Ana M. Mourao

1998-03-02T23:59:59.000Z

404

On the Origin of Proton Mobility Suppression in Aqueous Solutions of Amphiphiles  

E-Print Network [OSTI]

proton channels or fuel cell membranes.6,9,12 Aqueous mixtures with amphiphilic molecules of controversial history,32-41 is currently being debated.42-46 For example, Laage et al.43 claim that reduced

Agmon, Noam

405

Study of high transverse momentum charged particle suppression in heavy ion collisions at LHC  

E-Print Network [OSTI]

The charged particle spectrum at large transverse momentum (PT), dominated by hadrons originating from parton fragmentation, is an important observable for studying the properties of the hot, dense medium produced in ...

Yoon, Andre Sungho

2012-01-01T23:59:59.000Z

406

Progress in year 2000 1. Superfluid suppression of impurity scattering in a Bose-Einstein  

E-Print Network [OSTI]

was dramatically reduced when the velocity of the impurities was reduced below the speed of sound of the condensate of dissipation was found at a critical velocity of about 10 % of the speed of sound which corrects the higher or rotons in the case of liquid helium-4. We could create impurity atoms in a trapped BEC by transferring

407

Influence of Transpiration Suppressants, Sprinkler Irrigation and Moisture Levels on Transpiration and Evapotranspiration  

E-Print Network [OSTI]

In 1968 and 1969, moisture level treatments were applied to tomatoes and citrus. Light sprinkler applications and white acrylic paint were applied to leaf canopies of tomatoes and citrus. Moisture use and yields as influenced by treatments were...

Gerard, C. J.

408

E-Print Network 3.0 - adam12 suppresses muscle Sample Search...  

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

stimulation of skeletal muscle F. Norman Briggs*, K. Francis Lee+ , Joseph J... , USA Received 23 October 1989 Chronic stimulation of a predominantly fast ... Source:...

409

Evidence for Insulin Suppression of Baseline Luteinizing Hormone in Women with Polycystic  

E-Print Network [OSTI]

doses of GnRH during a fixed rate of insulin infusion and LH responses to a fixed dose of GnRH during varying doses of insulin infusion were analyzed for contributing factors. Patients and Setting: Eighteen and during insulin infusion at theGeneral Clinical Research Center, University of California, San Diego. Main

Lawson, Mark A.

410

An optically modulated zero-field atomic magnetometer with suppressed spin-exchange broadening  

SciTech Connect (OSTI)

We demonstrate an optically pumped {sup 87}Rb magnetometer in a microfabricated vapor cell based on a zero-field dispersive resonance generated by optical modulation of the {sup 87}Rb ground state energy levels. The magnetometer is operated in the spin-exchange relaxation-free regime where high magnetic field sensitivities can be achieved. This device can be useful in applications requiring array-based magnetometers where radio frequency magnetic fields can induce cross-talk among adjacent sensors or affect the source of the magnetic field being measured.

Jiménez-Martínez, R. [Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305 (United States) [Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305 (United States); Department of Physics, University of Colorado, Boulder, Colorado 80309 (United States); Knappe, S.; Kitching, J. [Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305 (United States)] [Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305 (United States)

2014-04-15T23:59:59.000Z

411

Estrogens suppress RANK ligand-induced osteoclast differentiation via a stromal cell independent  

E-Print Network [OSTI]

of estrogen's beneficial effects in preventing post- menopausal osteoporosis (1­3). Studies also suggest 30, 2000) Loss of ovarian function following menopause results in a sub- stantial increase in bone- sive loss of trabecular bone mass and eventually osteoporosis, in part the result of increased

Pike, J. Wesley

412

Androgens Suppress Osteoclast Formation Induced by RANKL and Macrophage-Colony Stimulating Factor  

E-Print Network [OSTI]

-Jun essential for osteoclast differentiation. (Endocrinology 142: 3800­3808, 2001) OSTEOPOROSIS IS A disease of osteoporosis have yet to be identified. Bone loss, however, most often occurs as a result of an imbalance­4). Two of the most significant determinants of progressive bone loss and osteoporosis in both males

Pike, J. Wesley

413

Doping suppression and mobility enhancement of graphene transistors fabricated using an adhesion promoting dry transfer process  

SciTech Connect (OSTI)

We present the facile dry transfer of graphene synthesized via chemical vapor deposition on copper film to a functional device substrate. High quality uniform dry transfer of graphene to oxidized silicon substrate was achieved by exploiting the beneficial features of a poly(4-vinylphenol) adhesive layer involving a strong adhesion energy to graphene and negligible influence on the electronic and structural properties of graphene. The graphene field effect transistors (FETs) fabricated using the dry transfer process exhibit excellent electrical performance in terms of high FET mobility and low intrinsic doping level, which proves the feasibility of our approach in graphene-based nanoelectronics.

Cheol Shin, Woo; Hun Mun, Jeong; Yong Kim, Taek; Choi, Sung-Yool; Jin Cho, Byung, E-mail: bjcho@kaist.edu, E-mail: tskim1@kaist.ac.kr [Department of Electrical Engineering, Graphene Research Center, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Yoon, Taeshik; Kim, Taek-Soo, E-mail: bjcho@kaist.edu, E-mail: tskim1@kaist.ac.kr [Department of Mechanical Engineering, Graphene Research Center, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)] [Department of Mechanical Engineering, Graphene Research Center, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

2013-12-09T23:59:59.000Z

414

E-Print Network 3.0 - adrenal suppression due Sample Search Results  

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

Cervical Lumbar Sacral Eye ... Source: Morrell, Thomas E. - Department of Biology, Ball State University Collection: Environmental Sciences and Ecology 84 Endogenous Synthesis...

415

PPPL extends system for suppressing instabilities to long-pulse experiments  

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

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

416

$J/\\psi$ production and suppression in high energy proton-nucleus collisions  

E-Print Network [OSTI]

We apply a Color Glass Condensate+Non-Relativistic QCD (CGC+NRQCD) framework to compute $J/\\psi$ production in deuteron-nucleus collisions at RHIC and proton-nucleus collisions at the LHC. Our results match smoothly at high $p_\\perp$ to a next-to-leading order perturbative QCD + NRQCD computation. Excellent agreement is obtained for $p_\\perp$ spectra at RHIC and LHC for central and forward rapidities, as well as for the normalized ratio $R_{pA}$ of these results to spectra in proton-proton collisions. In particular, we observe that the $R_{pA}$ data is strongly bounded by our computations of the same for each of the individual NRQCD channels; this result provides strong evidence that our description is robust against uncertainties in initial conditions and hadronization mechanisms.

Ma, Yan-Qing; Zhang, Hong-Fei

2015-01-01T23:59:59.000Z

417

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

E-Print Network [OSTI]

, 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...

Saeed, Ahmed

2012-07-16T23:59:59.000Z

418

acid-induced growth suppression: Topics by E-print Network  

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

although they did possess fewer eggs. Daphnia responses to chemicals from either roach or Elodea Burks, Romi 3 Synergistic effect of obesity and lipid ingestion in...

419

An analog approach to interference suppression in ultra-wideband receivers  

E-Print Network [OSTI]

Because of the huge bandwidth of Ultra-Wideband (UWB) systems, in-band narrowband interference may hinder receiver performance. In this dissertation, sources of potential narrowband interference that lie within the IEEE 802.15.3a UWB bandwidth...

Fischer, Timothy W.

2007-09-17T23:59:59.000Z

420

Dkk-3, a Secreted Wnt Antagonist, Suppresses Tumorigenic Potential and Pulmonary Metastasis in Osteosarcoma  

E-Print Network [OSTI]

from Applied Biosystems (Carlsbad, CA, USA). 2.2. MTT Assay.reagent (Invitrogen, Carlsbad, CA, USA). Using a high-

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Transcription Factor Amr1 Induces Melanin Biosynthesis and Suppresses Virulence in Alternaria brassicicola  

SciTech Connect (OSTI)

Alternaria brassicicola is a successful saprophyte and necrotrophic plant pathogen. Several A. brassicicola genes have been characterized as affecting pathogenesis of Brassica species. To study regulatory mechanisms of pathogenesis, we mined 421 genes in silico encoding putative transcription factors in a machine-annotated, draft genome sequence of A. brassicicola. In this study, targeted gene disruption mutants for 117 of the transcription factor genes were produced and screened. Three of these genes were associated with pathogenesis. Disruption mutants of one gene (AbPacC) were nonpathogenic and another gene (AbVf8) caused lesions less than half the diameter of wild-type lesions. Unexpectedly, mutants of the third gene, Amr1, caused lesions with a two-fold larger diameter than the wild type and complementation mutants. Amr1 is a homolog of Cmr1, a transcription factor that regulates melanin biosynthesis in several fungi. We created gene deletion mutants of ?amr1 and characterized their phenotypes. The ?amr1 mutants used pectin as a carbon source more efficiently than the wild type, were melanin-deficient, and more sensitive to UV light and glucanase digestion. The AMR1 protein was localized in the nuclei of hyphae and in highly melanized conidia during the late stage of plant pathogenesis. RNA-seq analysis revealed that three genes in the melanin biosynthesis pathway, along with the deleted Amr1 gene, were expressed at low levels in the mutants. In contrast, many hydrolytic enzyme-coding genes were expressed at higher levels in the mutants than in the wild type during pathogenesis. The results of this study suggested that a gene important for survival in nature negatively affected virulence, probably by a less efficient use of plant cell-wall materials. We speculate that the functions of the Amr1 gene are important to the success of A. brassicicola as a competitive saprophyte and plant parasite.

Cho, Yangrae; Srivastava, Akhil; Ohm, Robin A.; Lawrence, Christopher B.; Wang, Koon-Hui; Grigoriev, Igor V.; Marahatta, Sharadchandra P.

2012-05-01T23:59:59.000Z

422

Overcoming dendritic cell-mediated suppression of T cell responses in a prostate tumor environment  

E-Print Network [OSTI]

Prostate cancer is the most prevalent malignancy in American men, leading to significant mortality each year. This is in part due to a lack of effective treatments for advanced disease. The prostate is considered an ideal ...

Higham, Eileen M

2010-01-01T23:59:59.000Z

423

attenuated cocaine-induced suppression: Topics by E-print Network  

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

Topic Index 181 Three-Dimensional Compressional Attenuation Model (QP) for the Salton Trough, Southern California Geosciences Websites Summary: -frequency decay rate of...

424

Novel approaches to Newtonian noise suppression in interferometric gravitational wave detection  

E-Print Network [OSTI]

The Laser Interferometer Gravitational-wave Observatory (LIGO) attempts to detect ripples in the curvature of spacetime using two large scale interferometers. These detectors are several kilometer long Michelson interferometers ...

Hunter-Jones, Nicholas R

2011-01-01T23:59:59.000Z

425

Suppressing Riser-Based Slugging in Multiphase Flow by State Feedback  

E-Print Network [OSTI]

of the system, x1 is the total mass of gas in the volume upstream of the riser base (volume one), x2 is the total mass of gas in the riser (volum or vertical pipe sections, and is potentially damaging to downstream processing equipment such as separators

Foss, Bjarne A.

426

Suppression of Tin Whiskers in Lead-Free Solder - Energy Innovation Portal  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystalline Gallium

427

Time series study of urban rainfall suppression during clean-up periods  

E-Print Network [OSTI]

The effect on urban rainfall of pollution aerosols is studied both by data analysis and computational simulation. Our study examines data for urban areas undergoing decadal clean-up. We compare the annual precipitation between polluted sites...

Geng, Jun

2009-05-15T23:59:59.000Z

428

Time series study of urban rainfall suppression during clean-up periods  

E-Print Network [OSTI]

The effect on urban rainfall of pollution aerosols is studied both by data analysis and computational simulation. Our study examines data for urban areas undergoing decadal clean-up. We compare the annual precipitation between polluted sites...

Geng, Jun

2008-10-10T23:59:59.000Z

429

E-Print Network 3.0 - asymmetric competitive suppression Sample...  

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

the asymmetric equilibrium. For example... , the model exhibits multiple equilib- ria, with one equatorially symmetric ... Source: Sobel, Adam - Department of Applied...

430

Simultaneous interfacial misfit array formation and antiphase domain suppression on miscut silicon substrate  

E-Print Network [OSTI]

Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87106, USA 2 TEM Laboratory, Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, New Mexico 87131, USA 3 California Nano Systems Institute and Department of Electrical Engineering, University

New Mexico, University of

431

E-Print Network 3.0 - argonaute2 suppresses drosophila Sample...  

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

2003; doi:10.1038nature02123. Published online 16 November 2003. Summary: ., Izaurralde, E. & Sattler, M. Structure and nucleic-acid binding of the Drosophila Argonaute 2...

432

Overexpressed of RAD51 suppresses recombination defects: a possible mechanism to reverse genomic instability  

E-Print Network [OSTI]

Sasaki, M.S. , Sonoda, E. , Fukushima, T. , Morrison, C. ,M.S. , Tachiiri, S. , Fukushima, T. , Sonoda, E. , Schild,

Schild, David

2010-01-01T23:59:59.000Z

433

Mechanical Overstimulation of Hair Bundles: Suppression and Recovery of Active Motility  

E-Print Network [OSTI]

Hair Cell . . . . . . . . . . . . . . . . . . . . . . .Stiffness of the Hair Bundle . . . . . . . . . . . .Detection of Hair Bundle

KAO, ALBERT

2013-01-01T23:59:59.000Z

434

Investigation of growth factors and cytokines that suppress adult stem cell asymmetric cell kinetics  

E-Print Network [OSTI]

Adult stem cells are potentially useful in many biomedical applications that can save lives and increase the quality of a patient's life, such as tissue engineering, cell replacement, and gene therapy. However, these ...

Ganz, Michal

2005-01-01T23:59:59.000Z

435

Mark Humayun Photograph by Jill Greenberg  

E-Print Network [OSTI]

.com/science/health/breakthroughs/next-gen-digital-sight-could- cure-blindness Next Gen Digital Sight Could Cure Blindness The Brilliant Idea: An artificial retina to receive the Argus II artificial retina. In a healthy human eye, 125 million photoreceptors at the back's left eye and lift the saran-wrap-like membrane that covers it, called the conjunctiva. He

Valero-Cuevas, Francisco

436

Argonne National Laboratory U.S. Department of Energy  

E-Print Network [OSTI]

.S. Department of Energy (DOE) in modernizing its management of the life cycle of nuclear materials and enhancing long-term safety, safeguards, and security, through the development of an integrated RFID system. 2 Solution Our solution is ARG-US, an RFID technology that features long-life, customizable sensor tags

Kemner, Ken

437

Our primary technical problem was to support the U.S. Department of Energy (DOE) in modernizing its management  

E-Print Network [OSTI]

) in modernizing its management of the life cycle of nuclear materials and enhancing long-term safety, safeguards, and security, through the development of an integrated RFID system. Solution Our solution is ARG-US, an RFID technology that features long-life, customizable sensor tags (Figures 1 and 2) with an integrated

Kemner, Ken

438

SA Time: 16:38 R/$ 9.27 R/ 12.57 R/ 15.84 Gold $/oz 899.85 JSE Alsi 20,465.22 More indicators Article Search  

E-Print Network [OSTI]

Panels Save $1000's on Energy Bills, Build Solar Panels, as seen on CNN, $49.9 www.Earth4EnergyGuide.com Solar Energy Panels Resources and information on solar energy panels. Compare and save! www.SolarPanel Subscriptions Cape Argus Cape Times Daily News Isolezwe Post Pretoria News Honda Solar Cell Learn about Honda

Rogers, John A.

439

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-xxx  

E-Print Network [OSTI]

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-EP/98-xxx June 14, 1998 Measurement of beauty hadrons, b ! Xu`, has been performed using almost two million hadronic Z decays collected by the L symmetry. Several measurements of jVubj performed at the (4S) exist to date. The CLEO [4] and ARGUS [5

Boyer, Edmond

440

REAL 380 -REAL ESTATE INVESTMENT ANALYSIS Fall, 2013; MW 4:00 5:15, 320 Beatty Center  

E-Print Network [OSTI]

forecasting and risk analysis." Objectives REAL 380 is an advanced course focusing on real estate investment analysis and decision-making. By the end of the course the students will be vary familiar, students will learn the basics of ARGUS as an analytical tool for analysis. Prerequisite Junior standing

Young, Paul Thomas

Note: This page contains sample records for the topic "argus halon suppression" 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

Transport phenomena in intrinsic semiconductors and insulators at high current densities: Suppression of the broken neutrality drift  

SciTech Connect (OSTI)

It is shown that, in addition to the diffusion and broken neutrality drift (BND) modes well-known for insulators and very lightly doped semiconductors, the quasineutral drift (QND) mode is possible. The transition from the BND to QND mode is accompanied by the appearance of a portion with a very sharp current rise in the current-voltage characteristic. This effect is observed in a new type of semiconductor detectors (CIDs, Current Injected Detectors) of high-intensity neutron and proton radiation, suggested, in particular, for Large Hadron Collider. The effect is unambiguously attributed now to the presence of radiation-induced deep centers in a semiconductor. It is shown, however, in this paper that the effect of a very sharp rise in current upon a slight increase in voltage is even possible when there are no deep centers. An equation adequately describing the possible transport modes in intrinsic semiconductors and insulators is derived. The results of an analytical study are confirmed by an adequate simulation.

Mnatsakanov, T. T.; Tandoev, A. G.; Yurkov, S. N. [All-Russia Electrotechnical Institute, Krasnokazarmennaya 12, 111250 Moscow (Russian Federation)] [All-Russia Electrotechnical Institute, Krasnokazarmennaya 12, 111250 Moscow (Russian Federation); Levinshtein, M. E. [The Ioffe Physico-Technical Institute, Politekhnicheskaya 26, 194021 St. Petersburg (Russian Federation)] [The Ioffe Physico-Technical Institute, Politekhnicheskaya 26, 194021 St. Petersburg (Russian Federation)

2013-08-14T23:59:59.000Z

442

Fasting-induced suppression of circulating luteinizing hormone is caused by altered luteinizing hormone releasing-hormone secretion  

E-Print Network [OSTI]

and decapitated. Trunk blood was collected and serum concentration of LH was determined by radioimmunoassay (RIA). The brain was removed and the hypothalamus isolated for in vitro static culture and for peptide extraction, These techniques allowed assessment... of release and hypothalamic content of LHRH. The extracts and static culture incubate samples were analyzed by RIA for LHRH. Selected rats were treated with subcutaneous injection of the opioid antagonist naloxone- HCI (1 mg kg-' bw) or saline vehicle...

Farr, Jaime Alan

1992-01-01T23:59:59.000Z

443

Uni-Traveling-Carrier Balanced Photodiode With Tunable MMI Coupler for Optimization of Source Laser RIN Suppression  

E-Print Network [OSTI]

A balanced uni-traveling-carrier (UTC) waveguide photodiode (PD) has been fabricated and characterized. The balanced PD incorporates a multimode interference (MMI) coupler as a light combiner/splitter with tunability of ...

Klamkin, Jonathan

444

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

SciTech Connect (OSTI)

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

445

Suppression of Star Formation in the central 200 kpc of a z = 1.4 Galaxy Cluster  

E-Print Network [OSTI]

We present the results of an extended narrow-band H{\\alpha} study of the massive galaxy cluster XMMU J2235.3-2557 at z = 1.39. This paper represents a follow up study to our previous investigation of star-formation in the cluster centre, extending our analysis out to a projected cluster radius of 1.5 Mpc. Using the Near InfraRed Imager and Spectrograph (NIRI) on Gemini North we obtained deep H narrow-band imaging corresponding to the rest-frame wavelength of H{\\alpha} at the cluster's redshift. We identify a total of 163 potential cluster members in both pointings, excluding stars based on their near-IR colours derived from VLT/HAWK-I imaging. Of these 163 objects 14 are spectroscopically confirmed cluster members, and 20% are excess line-emitters. We find no evidence of star formation activity within a radius of 200 kpc of the brightest cluster galaxy in the cluster core. Dust-corrected star formation rates (SFR) of excess emitters outside this cluster quenching radius, RQ \\sim 200 kpc, are on average = 2.7...

Grutzbauch, Ruth; Jørgensen, Inger; Varela, Jesus

2012-01-01T23:59:59.000Z

446

CD8+ T cell antiviral activity: mechanism of induction and the suppression of emerging feline immunodeficiency virus strains  

E-Print Network [OSTI]

........................................ 93 12. Absolute CD8 + T lymphocyte counts until 11 weeks after infection of cats with varying doses of FIV-TX53 virus........................................ 94 13. Patterns of CD8? low expression... translation product of the FIV env gene is processed through proteolytic cleavage into the surface protein and the transmembrane protein (TM) (gp40) (Verschoor et al., 1993). Pancino et al. (1993b) have identified nine variable (V) regions throughout...

Phadke, Anagha

2007-09-17T23:59:59.000Z

447

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

E-Print Network [OSTI]

Z, Plotkine M, Szabo C, Marchand-Verrecchia C: BeneficialM, Gillet B, Meric P, Marchand-Leroux C: Effect of acute

2012-01-01T23:59:59.000Z

448

The Yang Obeys, but the Yin Ignores: Copyright Law and Speech Suppression in the People's Republic of China  

E-Print Network [OSTI]

2010). The President of the SPC ranks lower than the premier1/13632.pdf (unlike the SPC's 2000 interpretation of thesupra note 268, at 20 (the SPC amended Copyright Law inter-

McIntyre, Stephen

2011-01-01T23:59:59.000Z

449

Tongue-placed tactile biofeedback suppresses the deleterious effects of muscle fatigue on joint position sense at the ankle  

E-Print Network [OSTI]

Whereas the acuity of the position sense at the ankle can be disturbed by muscle fatigue, it recently also has been shown to be improved, under normal ankle neuromuscular state, through the use of an artificial tongue-placed tactile biofeedback. The underlying principle of this biofeedback consisted of supplying individuals with supplementary information about the position of their matching ankle position relative to their reference ankle position through electrotactile stimulation of the tongue. Within this context, the purpose of the present experiment was to investigate whether this biofeedback could mitigate the deleterious effect of muscle fatigue on joint position sense at the ankle. To address this objective, sixteen young healthy university students were asked to perform an active ankle-matching task in two conditions of No-fatigue and Fatigue of the ankle muscles and two conditions of No-biofeedback and Biofeedback. Measures of the overall accuracy and the variability of the positioning were determin...

Vuillerme, Nicolas; Chenu, Olivier; Demongeot, Jacques; Payan, Yohan

2007-01-01T23:59:59.000Z

450

TONGUE-PLACED TACTILE BIOFEEDBACK SUPPRESSES THE DELETERIOUS EFFECTS OF MUSCLE FATIGUE ON JOINT POSITION SENSE AT THE ANKLE  

E-Print Network [OSTI]

POSITION SENSE AT THE ANKLE Nicolas VUILLERME, Matthieu BOISGONTIER, Olivier CHENU, Jacques DEMONGEOT of the position sense at the ankle can be disturbed by muscle fatigue, it recently also has been shown to be improved, under normal ankle neuromuscular state, through the use of an artificial tongue-placed tactile

Paris-Sud XI, Université de

451

Defining the sequence specificity of Ikaros DNA binding zinc fingers and their role in T cell activation and tumor suppression  

E-Print Network [OSTI]

150  mM  NaCl,  2.5  mM  CaCl2   Stock  mixes:  25  mL  1M  mL  5M  NaCl,  1.25  mL  1M  CaCl2,  up  to  500  mL  with  

Wadsworth, Sarah Elizabeth

2013-01-01T23:59:59.000Z

452

Results from a Prototype MAPS Sensor Telescope and Readout Systemwith Zero Suppression for the Heavy Flavor Tracker at STAR  

SciTech Connect (OSTI)

We describe a three Mimostar-2 Monolithic Active PixelSensor (MAPS) sensor telescope prototype with an accompanying readoutsystem incorporating on-the-fly data sparsification. The system has beencharacterized and we report on the measured performance of the sensortelescope and readout system in beam tests conducted both at the AdvancedLight Source (ALS) at Lawrence Berkeley National Laboratory (LBNL) and inthe STAR experiment at the Relativistic Heavy Ion Collider (RHIC). Thiseffort is part of the development and prototyping work that will lead toa vertex detector for the STAR experiment.

Greiner, Leo C.; Matis, Howard S.; Ritter, Hans G.; Rose, AndrewA.; Stezelberger, Thorsten; Sun, Xiangming; Szelezniak, Michal A.; Thomas, James H.; Vu, Chinh Q.; Wieman, Howard H.

2008-02-11T23:59:59.000Z

453

Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same  

DOE Patents [OSTI]

Methods and apparatus for attenuating waves in a bore hole, and seismic surveying systems incorporating the same. In one embodiment, an attenuating device includes a soft compliant bladder coupled to a pressurized gas source. A pressure regulating system reduces the pressure of the gas from the gas source prior to entering the bladder and operates in conjunction with the hydrostatic pressure of the fluid in a bore hole to maintain the pressure of the bladder at a specified pressure relative to the surrounding bore hole pressure. Once the hydrostatic pressure of the bore hole fluid exceeds that of the gas source, bore hole fluid may be admitted into a vessel of the gas source to further compress and displace the gas contained therein. In another embodiment, a water-reactive material may be used to provide gas to the bladder wherein the amount of gas generated by the water-reactive material may depend on the hydrostatic pressure of the bore hole fluid.

West, Phillip B.; Haefner, Daryl

2005-12-13T23:59:59.000Z

454

Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same  

DOE Patents [OSTI]

Methods and apparatus for attenuating waves in a bore hole, and seismic surveying systems incorporating the same. In one embodiment, an attenuating device includes a soft compliant bladder coupled to a pressurized gas source. A pressure regulating system reduces the pressure of the gas from the gas source prior to entering the bladder and operates in conjunction with the hydrostatic pressure of the fluid in a bore hole to maintain the pressure of the bladder at a specified pressure relative to the surrounding bore hole pressure. Once the hydrostatic pressure of the bore hole fluid exceeds that of the gas source, bore hole fluid may be admitted into a vessel of the gas source to further compress and displace the gas contained therein. In another embodiment, a water-reactive material may be used to provide gas to the bladder wherein the amount of gas generated by the water-reactive material may depend on the hydrostatic pressure of the bore hole fluid.

West, Phillip B.; Haefner, Daryl

2004-08-17T23:59:59.000Z

455

Suppressed Blinking and Auger Recombination in Near-Infrared Type-II InP/CdS Nanocrystal Quantum Dots  

E-Print Network [OSTI]

Dots Allison M. Dennis, Benjamin D. Mangum, Andrei Piryatinski, Young-Shin Park, Daniel C. Hannah*, Materials Physics & Applications Division: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States Theoretical Division, Los Alamos National Laboratory

456

Suppression of bubbles in subcooled liquid nitrogen under heat impulse Kwanwoo Nam a,*, Bok-Yeol Seok a  

E-Print Network [OSTI]

transfer is closely related with the thermal stability and the electrical performance of HTS power machines between 77 K and 65 K. Two kinds of experiments are performed to scrutinize the thermal behavior of liquid-nitrogen at around 65 K is widely used for cooling high temperature superconductor (HTS) power machines due to its

Chang, Ho-Myung

457

Ventilation and Suppression Systems in Road Tunnels: Some Issues regarding their Appropriate Use in a Fire Emergency   

E-Print Network [OSTI]

Two important tunnel safety technologies are addressed. The majority of long road tunnels have ventilation systems. In the event of a fire in a tunnel, such systems will influence fire development in a number of different ...

Carvel, Ricky O; Rein, Guillermo; Torero, Jose L

458

Suppression of conductivity in Mn-doped ZnO thin films W. M. Hlaing Oo,1  

E-Print Network [OSTI]

in the films.6 II. EXPERIMENTAL A cold-wall Emcore MOCVD system at Environmental Molecular Sciences Laboratory be tackled by using appropriately designed main and dopant precursors that decompose at similar tem

McCluskey, Matthew

459

Suppression of quantum decoherence via infrared-driven coherent exciton-plasmon coupling: Undamped field and Rabi oscillations  

SciTech Connect (OSTI)

We show that when a semiconductor quantum dot is in the vicinity of a metallic nanoparticle and driven by a mid-infrared laser field, its coherent dynamics caused by interaction with a visible laser field can become free of quantum decoherence. We demonstrate that this process, which can offer undamped Rabi and field oscillations, is the result of coherent normalization of the “effective” polarization dephasing time of the quantum dot (T{sub 2}{sup *}). This process indicates formation of infrared-induced coherently forced oscillations, which allows us to control the value of T{sub 2}{sup *} using the infrared laser. The results offer decay-free ultrafast modulation of the effective field experienced by the quantum dot when neither the visible laser field nor the infrared laser changes with time.

Sadeghi, S. M., E-mail: seyed.sadeghi@uah.edu [Department of Physics, University of Alabama in Huntsville, Huntsville, Alabama 35899 (United States); Nano and Micro Device Center, University of Alabama in Huntsville, Huntsville, Alabama 35899 (United States); Patty, K. D. [Department of Physics, University of Alabama in Huntsville, Huntsville, Alabama 35899 (United States)

2014-02-24T23:59:59.000Z

460

Inhibiting the Aurora B Kinase Potently Suppresses Repopulation During Fractionated Irradiation of Human Lung Cancer Cell Lines  

SciTech Connect (OSTI)

Purpose: The use of molecular-targeted agents during radiotherapy of non-small-cell lung cancer (NSCLC) is a promising strategy to inhibit repopulation, thereby improving therapeutic outcome. We assessed the combined effectiveness of inhibiting Aurora B kinase and irradiation on human NSCLC cell lines in vitro. Methods and Materials: NSCLC cell lines were exposed to concentrations of AZD1152-hydroxyquinazoline pyrazol anilide (AZD1152-HQPA) inhibiting colony formation by 50% (IC50{sub clone}) in combination with single dose irradiation or different fractionation schedules using multiple 2-Gy fractions per day up to total doses of 4-40 Gy. The total irradiation dose required to control growth of 50% of the plaque monolayers (TCD50) was determined. Apoptosis, G2/M progression, and polyploidization were also analyzed. Results: TCD50 values after single dose irradiation were similar for the H460 and H661 cell lines with 11.4 {+-} 0.2 Gy and 10.7 {+-} 0.3 Gy, respectively. Fractionated irradiation using 3 Multiplication-Sign 2 Gy/day, 2 Multiplication-Sign 2 Gy/day, and 1 Multiplication-Sign 2 Gy/day schedules significantly increased TCD50 values for both cell lines grown as plaque monolayers with increasing radiation treatment time. This could be explained by a repopulation effect per day that counteracts 75 {+-} 8% and 27 {+-} 6% of the effect of a 2-Gy fraction in H460 and H661 cells, respectively. AZD1152-HQPA treatment concomitant to radiotherapy significantly decreased the daily repopulation effect (H460: 28 {+-} 5%, H661: 10 {+-} 4% of a 2-Gy fraction per day). Treatment with IC50{sub clone} AZD1152-HPQA did not induce apoptosis, prolong radiation-induced G2 arrest, or delay cell cycle progression before the spindle check point. However, polyploidization was detected, especially in cell lines without functional p53. Conclusions: Inhibition of Aurora B kinase with low AZD1152-HQPA concentrations during irradiation of NSCLC cell lines affects repopulation during radiotherapy. Thus, concomitant Aurora B kinase inhibition and irradiation may be a promising strategy for fast repopulating tumors, which are difficult to cure by dose escalation based on conventional fractionation.

Sak, Ali, E-mail: ali.sak@uni-due.de [Department of Radiotherapy, West German Cancer Centre (WTZ), University Hospital Essen, University Duisburg-Essen, Essen (Germany)] [Department of Radiotherapy, West German Cancer Centre (WTZ), University Hospital Essen, University Duisburg-Essen, Essen (Germany); Stuschke, Martin; Groneberg, Michael; Kuebler, Dennis; Poettgen, Christoph [Department of Radiotherapy, West German Cancer Centre (WTZ), University Hospital Essen, University Duisburg-Essen, Essen (Germany)] [Department of Radiotherapy, West German Cancer Centre (WTZ), University Hospital Essen, University Duisburg-Essen, Essen (Germany); Eberhardt, Wilfried E.E. [Department of Medicine (Cancer Research), West German Cancer Centre (WTZ), University Hospital Essen, University Duisburg-Essen, Essen (Germany)] [Department of Medicine (Cancer Research), West German Cancer Centre (WTZ), University Hospital Essen, University Duisburg-Essen, Essen (Germany)

2012-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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

Suppression of fine ash formation in pulverized coal flames. Final technical report, September 30, 1992--January 31, 1996  

SciTech Connect (OSTI)

Coal ash, and particularly fine fly ash, remain one of the principal practical and environmental problems in coal-based power generation. In particular, submicron aerosols are identified with direct inhalation risk. Submicron ash is thought to arise from mineral vaporization during char combustion, followed by nucleation, condensation and coagulation to yield an aerosol. While aerosols are predominantly made out of volatile alkali minerals, they also can include refractory oxides that are chemically reduced to more volatile forms within the char particle and vaporized. Most of the ash of size greater than 1 {mu}m is generated by agglomeration of mineral as the char particle bums out. These two principal mechanisms are thought to account for most of the ash generated in coal combustion. Previous research has shown that various forms of coal treatment can influence the yields of fine ash from combustion. The research reported here investigates various forms of treatment, including physical coal cleaning, aerodynamic sizing, degree of grinding, and combinations of these on both aerosol yields and on yields of fine residual ash (1-4 {mu}m). The work also includes results from the combustion of artificial chars that include individual mineral elements. This research shows that these various forms of coal treatment can significantly change ash characteristics. While none of the treatments affected the bulk of the residual ash size distribution significantly, the yield of the ash aerosol mode (d<0.5 {mu}m) and fine residual ash mode (1-4 {mu}m) are changed by the treatments.

Kramlich, J.C.; Chenevert, B.; Park, Jungsung; Hoffman, D.A.; Butcher, E.K.

1996-07-19T23:59:59.000Z

462

Strong Suppression of Electronic Coherence Time by Flexural Phonons in Graphene --- Example of a New Dephasing Mechanism  

E-Print Network [OSTI]

We investigate decoherence of an electron in graphene caused by electron-flexural phonon interaction.We find out that the flexural phonons can produce dephasing rate comparable to the electron-electron one. The problem appears to be quite special...

Zhao, Wei

2014-07-08T23:59:59.000Z

463

Defining the sequence specificity of Ikaros DNA binding zinc fingers and their role in T cell activation and tumor suppression  

E-Print Network [OSTI]

cell  soluble   molecule,  CFDA-­?SE  (carboxyfluorescein  concentration,  eg.  10   µ M  CFDA-­?SE  (1:1000)  in  

Wadsworth, Sarah Elizabeth

2013-01-01T23:59:59.000Z

464

Suppression of Turbulence by Self-Generated and Imposed Mean Flows M. G. Shats,* H. Xia, and H. Punzmann  

E-Print Network [OSTI]

. Punzmann Plasma Research Laboratory, Research School of Physical Sciences and Engineering, Australian in magnetized plasma research, since it offers a very effective method of turbulence control [13

Falkovich, Gregory

465

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

E-Print Network [OSTI]

by the nuclear spin environment in a quantum dot can be substantially increased by subjecting the electron and characterized. The impact of system and control nonidealities is also assessed, including the effect.125336 PACS number s : 03.67.Pp, 03.65.Yz, 75.10.Jm, 02.60.Cb I. INTRODUCTION Electron and nuclear spin

466

5f delocalization-induced suppression of quadrupolar order in U(Pd1-xPtx)?  

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

We present bulk magnetic and transport measurements and x-ray resonant scattering measurements on U(Pd1-xPtx)? for x=0.005 and 0.01, which demonstrate the high sensitivity of the quadrupolar order in the canonical antiferroquadrupolar ordered system UPd? to doping with platinum. Bulk measurements for x=0.005 reveal behavior similar to that seen in UPd?, albeit at a lower temperature, and x-ray resonant scattering provides evidence of quadrupolar order described by the Qxy order parameter. In contrast, bulk measurements reveal only an indistinct transition in x=0.01, consistent with the observation of short-range quadrupolar order in our x-ray resonant scattering results.

Walker, H. C.; Le, M. D.; McEwen, K. A.; Bleckmann, M.; Süllow, S.; Mazzoli, C.; Wilkins, S. B.; Fort, D.

2011-12-01T23:59:59.000Z

467

Investigation of a suppression of asymmetric cell kinetics (SACK) approach for ex vivo expansion of human hematopoietic stem cells  

E-Print Network [OSTI]

Ex vivo expansion of hematopoietic stem cells (HSCs) is a long-standing challenge faced by both researchers and clinicians. To date, no robust, efficient method for the pure, ex vivo expansion of human HSCs has been ...

Taghizadeh, Rouzbeh R

2006-01-01T23:59:59.000Z

468

n-3 Polyunsaturated Fatty Acids Suppress Mitochondrial Translocation to the Immunological Synapse and Modulate Calcium Signaling in T Cells  

E-Print Network [OSTI]

T helper (Th) cell activation is necessary for the adaptive immune response. Formation of an immunological synapse (IS) between Th cells and antigen-presenting cells is the first step in Th cell activation. In vitro studies indicate that formation...

Yog, Rajeshwari

2011-02-22T23:59:59.000Z

469

Sulforaphane protects against cytokine- and streptozotocin-induced {beta}-cell damage by suppressing the NF-{kappa}B pathway  

SciTech Connect (OSTI)

Sulforaphane (SFN) is an indirect antioxidant that protects animal tissues from chemical or biological insults by stimulating the expression of several NF-E2-related factor-2 (Nrf2)-regulated phase 2 enzymes. Treatment of RINm5F insulinoma cells with SFN increases Nrf2 nuclear translocation and expression of phase 2 enzymes. In this study, we investigated whether the activation of Nrf2 by SFN treatment or ectopic overexpression of Nrf2 inhibited cytokine-induced {beta}-cell damage. Treatment of RIN cells with IL-1{beta} and IFN-{gamma} induced {beta}-cell damage through a NF-{kappa}B-dependent signaling pathway. Activation of Nrf2 by treatment with SFN and induction of Nrf2 overexpression by transfection with Nrf2 prevented cytokine toxicity. The mechanism by which Nrf2 activation inhibited NF-{kappa}B-dependent cell death signals appeared to involve the reduction of oxidative stress, as demonstrated by the inhibition of cytokine-induced H{sub 2}O{sub 2} production. The protective effect of SFN was further demonstrated by the restoration of normal insulin secreting responses to glucose in cytokine-treated rat pancreatic islets. Furthermore, pretreatment with SFN blocked the development of type 1 diabetes in streptozotocin-treated mice.

Song, Mi-Young; Kim, Eun-Kyung [Department of Biochemistry, Medical School and Diabetes Research Center, Chonbuk National University, Jeonju, Jeonbuk, 561-756 (Korea, Republic of); Moon, Woo-Sung [Department of Pathology, Medical School and Diabetes Research Center, Chonbuk National University, Jeonju, Jeonbuk, 561-756 (Korea, Republic of); Park, Jin-Woo [Department of Biochemistry, Medical School and Diabetes Research Center, Chonbuk National University, Jeonju, Jeonbuk, 561-756 (Korea, Republic of); Kim, Hyung-Jin; So, Hong-Seob; Park, Raekil [Vestibulocochlear System Research Center, College of Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749 (Korea, Republic of); Kwon, Kang-Beom [Department of Physiology, School of Oriental Medicine, College of Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749 (Korea, Republic of); Vestibulocochlear System Research Center, College of Medicine, Wonkwang University, Iksan, Jeonbuk, 570-749 (Korea, Republic of)], E-mail: desson@wonkwang.ac.kr; Park, Byung-Hyun [Department of Biochemistry, Medical School and Diabetes Research Center, Chonbuk National University, Jeonju, Jeonbuk, 561-756 (Korea, Republic of)], E-mail: bhpark@chonbuk.ac.kr

2009-02-15T23:59:59.000Z

470

Compost: A study of the development process and end-product potential for suppression of turfgrass disease  

E-Print Network [OSTI]

& Lynch 1996). Among the various processes used to manage organic wastes (e.g. land-®ll, incineration; Zucconi et al. 1981). Bene®ts of composting range from a decrease in mass and volume of organic wastes, recycling of nutrients, maintaining or restoring organic matter and other important soil physical characteri

Boland, Greg J.

471

Evaluation of exposure limits to toxic gases for nuclear reactor control room operators  

SciTech Connect (OSTI)

We have evaluated ammonia, chlorine, Halon (actually a generic name for several halogenated hydro-carbons), and sulfur dioxide for their possible effects during an acute two-minute exposure in order to derive recommendations for maximum exposure levels. To perform this evaluation, we conducted a search to find the most pertinent literature regarding toxicity in humans and in experimental animals. Much of the literature is at least a decade old, not an unexpected finding since acute exposures are less often performed now than they were a few years ago. In most cases, the studies did not specifically examine the effects of two-minute exposures; thus, extrapolations had to be made from studies of longer-exposure periods. Whenever possible, we gave the greatest weight to human data, with experimental animal data serving to strengthen the conclusion arrived at from consideration of the human data. Although certain individuals show hypersensitivity to materials like sulfur dioxide, we have not attempted to factor this information into the recommendations. After our evaluation of the data in the literature, we held a small workshop. Major participants in this workshop were three consultants, all of whom were Diplomates of the American Board of Toxicology, and staff from the Nuclear Regulatory Commission. Our preliminary recommendations for two-minute exposure limits and the rationale for them were discussed and consensus reached on final recommendations. These recommendations are: (1) ammonia-300 to 400-ppm; (2) chlorine-30 ppm; (3) Halon 1301-5%; Halon 1211-2%; and (4) sulfur dioxide-100 ppm. Control room operators should be able to tolerate two-minute exposures to these levels, don fresh-air masks, and continue to operate the reactor if the toxic material is eliminated, or safely shut down the reactor if the toxic gas remains. 96 refs., 9 tabs.

Mahlum, D.D.; Sasser, L.B. (Pacific Northwest Lab., Richland, WA (United States))

1991-07-01T23:59:59.000Z

472

Documentation pckage for the RFID temperature monitoring system (Of Model 9977 packages at NTS).  

SciTech Connect (OSTI)

The technical basis for extending the Model 9977 shipping package periodic maintenance beyond the one-year interval to a maximum of five years is based on the performance of the O-ring seals and the environmental conditions. The DOE Packaging Certification Program (PCP) has tasked Argonne National Laboratory to develop a Radio-Frequency Identification (RFID) temperature monitoring system for use by the facility personnel at DAF/NTS. The RFID temperature monitoring system, depicted in the figure below, consists of the Mk-1 RFId tags, a reader, and a control computer mounted on a mobile platform that can operate as a stand-alone system, or it can be connected to the local IT network. As part of the Conditions of Approval of the CoC, the user must complete the prescribed training to become qualified and be certified for operation of the RFID temperature monitoring system. The training course will be administered by Argonne National Laboratory on behalf of the Headquarters Certifying Official. This is a complete documentation package for the RFID temperature monitoring system of the Model 9977 packagings at NTS. The documentation package will be used for training and certification. The table of contents are: Acceptance Testing Procedure of MK-1 RFID Tags for DOE/EM Nuclear Materials Management Applications; Acceptance Testing Result of MK-1 RFID Tags for DOE/EM Nuclear Materials Management Applications; Performance Test of the Single Bolt Seal Sensor for the Model 9977 Packaging; Calibration of Built-in Thermistors in RFID Tags for Nevada Test Site; Results of Calibration of Built-in Thermistors in RFID Tags; Results of Thermal Calibration of Second Batch of MK-I RFID Tags; Procedure for Installing and Removing MK-1 RFID Tag on Model 9977 Drum; User Guide for RFID Reader and Software for Temperature Monitoring of Model 9977 Drums at NTS; Software Quality Assurance Plan (SQAP) for the ARG-US System; Quality Category for the RFID Temperature Monitoring System; The Documentation Package for the RFID Temperature Monitoring System; Software Test Plan and Results for ARG-US OnSite; Configuration Management Plan (CMP) for the ARG-US System; Requirements Management Plan for the ARG-US System; and Design Management Plan for ARG-US.

Chen, K.; Tsai, H.; Decision and Information Sciences

2009-02-20T23:59:59.000Z

473

Kondo effect in the paramagnetic phase of CrFe alloy with the spin-density-wave suppressed by pressure or V doping  

SciTech Connect (OSTI)

The pressure dependence of the resistivity {rho}(T) of (Cr+2.7 at.{percent}Fe){sub 98}V{sub 2} is measured, following a previous study of the temperature dependence of {rho}(T) in the spin-density-wave (SDW) alloy system, (Cr+2.7 at.{percent} Fe){sub 1{minus}x}(V,Mn){sub x}. The minimum in {rho}(T) in the V-doped alloys seen at T{approx_gt}T{sub N} for x{gt}1 at.{percent} is found to move to lower temperatures under pressure p in the alloy containing 2 at.{percent} V, decreasing in magnitude, and eventually, as the Neel temperature T{sub N} goes to zero at p{approx}10 kbar, becoming a very shallow minimum followed by a maximum and a rapid decrease as T{r_arrow}4.2 K. This latter behavior in the paramagnetic phase is believed to be due to the Kondo effect, while the pressure dependent minimum in {rho}(T) in the SDW phase is a manifestation of impurity resonance scattering. {copyright} {ital 1997 American Institute of Physics.}

Galkin, V.Y.; de Camargo, P.C. [Physics Department of Federal University of Parana, Curitiba 81 531 990 (Brazil)] [Physics Department of Federal University of Parana, Curitiba 81 531 990 (Brazil); Budko, S.L.; Saitovitch, E.B. [CBPF, Rio de Janeiro (Brazil)] [CBPF, Rio de Janeiro (Brazil); Fawcett, E. [Physics Department of University of Toronto, Toronto M5S 1A7 (Canada)] [Physics Department of University of Toronto, Toronto M5S 1A7 (Canada)

1997-04-01T23:59:59.000Z

474

Suppression of electron correlations in the collapsed tetragonal phase of CaFe2As2 under ambient pressure demonstrated by As75 NMR/NQR measurements  

SciTech Connect (OSTI)

The static and the dynamic spin correlations in the low-temperature collapsed tetragonal and the high-temperature tetragonal phase in CaFe2As2 have been investigated by As75 nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements. Through the temperature (T) dependence of the nuclear spin lattice relaxation rates (1/T1) and the Knight shifts, although stripe-type antiferromagnetic (AFM) spin correlations are realized in the high-temperature tetragonal phase, no trace of the AFM spin correlations can be found in the nonsuperconducting, low-temperature, collapsed tetragonal (cT) phase. Given that there is no magnetic broadening in As75 NMR spectra, together with the T-independent behavior of magnetic susceptibility ? and the T dependence of 1/T1T?, we conclude that Fe spin correlations are completely quenched statically and dynamically in the nonsuperconducting cT phase in CaFe2As2.

Furukawa, Yuji [Ames Laboratory; Roy, Beas [Ames Laboratory; Ran, Sheng [Ames Laboratory; Budko, Sergey L. [Ames Laboratory; Canfield, Paul C. [Ames Laboratory

2014-03-20T23:59:59.000Z

475

Effect of Vermicompost Tea on the Growth and Yield of Tomato Plants and Suppression of Root Knot Nematode in the Soil  

E-Print Network [OSTI]

International Symposium Composting and Compost utilization.the effects of the composting process on the antipathogenicplants Introduction Composting is a biological decomposition

Selvaraj, Abira

2011-01-01T23:59:59.000Z

476

Charge Inversion, Water Splitting, and Vortex Suppression Due to DNA Sorption on Ion-Selective Membranes and Their Ion-Current  

E-Print Network [OSTI]

These membranes show a unique property of selective ion transport through the nanopores of IEMs embedded to saturate at a limiting current beyond a critical cross-membrane voltage drop as a result of the ion-transport-Selective Membranes and Their Ion-Current Signatures Zdenek Slouka, Satyajyoti Senapati, Yu Yan, and Hsueh-Chia Chang

Chang, Hsueh-Chia

477

An investigation of the effects of smoke suppressant fuel additives on engine and test cell exhaust gas opacities. Final report for 1981  

SciTech Connect (OSTI)

Tests were conducted in a one-eighth scale turbojet test cell with a ramjet type combustor to investigate the effects of fuel additives on smoke reduction. Particle size and mass concentrations were determined at the engine and stack exhausts using three wavelength optical detector systems. Particulate samples were also collected at the engine exhaust and analyzed with a scanning electron microscope. Combustor temperature and fuel additives were found to significantly affect particulate mass concentrations emitted from the engine while particle size appeared to be unaffected. No significant changes in the particulate size or mass occurred from the engine exhaust to the stack exhaust. The optical determination of exhaust mean particulate size/mass concentration with three wavelength optical detector systems appears to be reasonably accurate technique for evaluating the effects of engine and test cell operating conditions and fuel composition changes on the emitted particulates.

Thornburg, D.W.; Darnell, T.R.; Netzer, D.W.

1982-05-01T23:59:59.000Z

478

Effect of Vermicompost Tea on the Growth and Yield of Tomato Plants and Suppression of Root Knot Nematode in the Soil  

E-Print Network [OSTI]

low_conc. ), T3 – VCT (high_conc. ), T4 – IPA (low_conc. ),T5 – IPA (high_conc. ), T6- Benzyladenine, T7- Compound X (conc. 11.43 d 49.33 b T 4 - IPA_low conc. 35.00 ab 57.50 ab

Selvaraj, Abira

2011-01-01T23:59:59.000Z

479

About the conditions of suppression of turbulence effects on the poloidal fluxes in thoroidal plasmas in the presence of RF heating  

E-Print Network [OSTI]

-NASTI Romania, Str. A.I.Cuza No. 13, Craiova ­ 1100 B. Weyssow Association EURATOM-Etat Belge, Physique

480

Unconscious bias in the suppressive policing of Black and Latino men and boys: neuroscience, Borderlands theory, and the policymaking quest for just policing  

E-Print Network [OSTI]

New Brunswick, Transaction Publ. Huizinga, David and Terenceon this research. (Bass 2001; Huizinga and Thornberry et al.

Barvosa, Edwina

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "argus halon suppression" 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.
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to obtain the most current and comprehensive results.


481

Suppression of intensity noise of a laser-diode-pumped single-frequency Nd:YVO4 laser by optoelectronic control  

E-Print Network [OSTI]

by optoelectronic control Jing Zhang, Hongliang Ma, Changde Xie, and Kunchi Peng The intensity-noise reduction of a laser-diode-pumped single-frequency ring Nd:YVO4 laser when differ- ent optoelectronic control systems techniques, optoelectronic feedback control of the drive current of the pump laser diode and feed

Zhang, Jing

482

Combined contributions of over-secreted glucagon-like peptide 1 and suppressed insulin secretion to hyperglycemia induced by gatifloxacin in rats  

SciTech Connect (OSTI)

Accumulating evidences have showed that gatifloxacin causes dysglycemia in both diabetic and non-diabetic patients. Our preliminary study demonstrated that gatifloxacin stimulated glucagon-like peptide 1 (GLP-1) secretion from intestinal cells. The aim of the study was to investigate the association between gatifloxacin-stimulated GLP-1 release and dysglycemia in both normal and streptozotocin-induced diabetic rats and explore the possible mechanisms. Oral administration of gatifloxacin (100 mg/kg/day and 200 mg/kg/day) for 3 and 12 days led to marked elevation of GLP-1 levels, accompanied by significant decrease in insulin levels and increase in plasma glucose. Similar results were found in normal rats treated with 3-day gatifloxacin. Gatifloxacin-stimulated GLP-1 release was further confirmed in NCI-H716 cells, which was abolished by diazoxide, a K{sub ATP} channel opener. QT-PCR analysis showed that gatifloxacin also upregulated expression of proglucagon and prohormone convertase 3 mRNA. To clarify the contradiction on elevated GLP-1 without insulinotropic effect, effects of GLP-1 and gatifloxacin on insulin release were investigated using INS-1 cells. We found that short exposure (2 h) to GLP-1 stimulated insulin secretion and biosynthesis, whereas long exposure (24 h and 48 h) to high level of GLP-1 inhibited insulin secretion and biosynthesis. Moreover, we also confirmed gatifloxacin acutely stimulated insulin secretion while chronically inhibited insulin biosynthesis. All the results gave an inference that gatifloxacin stimulated over-secretion of GLP-1, in turn, high levels of GLP-1 and gatifloxacin synergistically impaired insulin release, worsening hyperglycemia. -- Highlights: ? Gatifloxacin induced hyperglycemia both in diabetic rats and normal rats. ? Gatifloxacin enhanced GLP-1 secretion but inhibited insulin secretion in rats. ? Long-term exposure to high GLP-1 inhibited insulin secretion and biosynthesis. ? GLP-1 over-secretion may be involved in gatifloxacin-induced hyperglycemia.

Yu, Yunli, E-mail: chrisyu1255@yahoo.com.cn [Department of Pharmaceutics, The Second Affiliated Hospital of Soochow University, Suzhou 215004 (China) [Department of Pharmaceutics, The Second Affiliated Hospital of Soochow University, Suzhou 215004 (China); Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Wang, Xinting, E-mail: wxinting1986@yahoo.com.cn [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)] [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Liu, Can, E-mail: ltsan@163.com [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)] [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Yao, Dan, E-mail: erinyao@126.com [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China) [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Shanghai Institute of Materia Medica, Shanghai 201203 (China); Hu, Mengyue, E-mail: juliahmy@126.com [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)] [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Li, Jia, E-mail: ljbzd@163.com [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)] [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Hu, Nan, E-mail: hn_324@163.com [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)] [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Liu, Li, E-mail: liulee@cpu.edu.cn [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)] [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China); Liu, Xiaodong, E-mail: xdliu@cpu.edu.cn [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)] [Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing 210009 (China)

2013-02-01T23:59:59.000Z

483

Supplementary Figure 1. Colorectal tumor cells accumulate features that suppress the activity of E2F1 and enhance the activity of -catenin. In normal cells canonical Wnt  

E-Print Network [OSTI]

a potential brake on -catenin activity: E2F1 inhibits -catenin- mediated activation of c-MYC, and activates adhesions, metastasis, or epithelial-mesenchymal transition. For antibodies, see Materials and Methods. All a dE2F1RNAi transgene (line #3) using a patched-Gal4 promoter driver (ptc), and significant

Cai, Long

484

Suppression of manganese-dependent production of nitric oxide in astrocytes: implications for therapeutic modulation of glial-derived inflammatory mediators  

E-Print Network [OSTI]

Primary cultured astrocytes were treated with Mn in the absence and presence of proinflammatory cytokines to determine their effect upon stimulation of nitric oxide (NO) production. Treatments of manganese and cytokines raised NO production...

Wright, Tyler T.

2009-05-15T23:59:59.000Z

485

PSD95 Suppresses Dendritic Arbor Development in Mature Hippocampal Neurons by Occluding the Clustering of NR2B-NMDA Receptors  

E-Print Network [OSTI]

Considerable evidence indicates that the NMDA receptor (NMDAR) subunits NR2A and NR2B are critical mediators of synaptic plasticity and dendritogenesis; however, how they differentially regulate these processes is unclear. ...

Bustos, Fernando J.

486

Factors influencing the suppression of Heliothis spp. and Anthonomous grandis Boheman by the predator, Solenopsis invicta Buren, in a cotton agroecosystem  

E-Print Network [OSTI]

e h a by the p edato, ~S1 o sis invicta Buren, in a Cotton Agroecosystem. (Nay 1981) Charles William Agnew, B. S. , Purdue University Chairman of Advisory Committee: Dr. Winfield Sterling Th1s study is concerned with evaluating the role... to my major advisor, Dr. W. L. Sterling for hi s time, advice, patience and cr1ticism during the course of this study and to the members of my consnittee for their service. Special thanks to Mr. Al len Dean for all types of assistance including...

Agnew, C. W

1981-01-01T23:59:59.000Z

487

Suppression of Tla1 gene expression for improved solar conversion efficiency and photosynthetic productivity in plants and algae  

SciTech Connect (OSTI)

The invention provides method and compositions to minimize the chlorophyll antenna size of photosynthesis by decreasing TLA1 gene expression, thereby improving solar conversion efficiencies and photosynthetic productivity in plants, e.g., green microalgae, under bright sunlight conditions.

Melis, Anastasios; Mitra, Mautusi

2010-06-29T23:59:59.000Z

488

Causal Inference and Prediction in Health Studies: Environmental Exposures and Schistosomiasis, HIV-1 Genotypic Susceptibility Scores and Virologic Suppression, and Risk of Hospital Readmission for Heart Failure Patients  

E-Print Network [OSTI]

cleaning and water diverting, planting rice, harvesting ricehad any water contact associated with rice harvesting,harvesting was excluded from the set of activity variables. This type of water

Sudat, Sylvia

2012-01-01T23:59:59.000Z

489

Polyphenolics from Mango (Mangifera indica L.) and Pomegranate (Punica granatum L.) Suppress Inflammation in in vivo and in vitro Models for Colitis  

E-Print Network [OSTI]

be the potential therapeutic agents for colitis. However, the mechanism underlying these effects of polyphenolics has not yet been elucidated. To determine the anti-inflammatory effects and possible mechanisms of polyphenolics from mango (gallic acid...

Kim, Hye Mee

2013-12-11T23:59:59.000Z

490

A PK2/Bv8/PROK2 Antagonist Suppresses Tumorigenic Processes by Inhibiting Angiogenesis in Glioma and Blocking Myeloid Cell Infiltration in Pancreatic Cancer  

E-Print Network [OSTI]

CXCL12, here referred to as SDF-1a (Figure 3D). Therefore,per condition. MCP-1, SDF-1a and PK2 all dissolved in watercontained PKRA7 (1 mg/ ml), SDF-1a (200 ng/ml; PeproTech),

2013-01-01T23:59:59.000Z

491

Oxygen at Nanomolar Levels Reversibly Suppresses Process Rates and Gene Expression in Anammox and Denitrification in the Oxygen Minimum Zone off Northern Chile  

E-Print Network [OSTI]

A major percentage (20 to 40%) of global marine fixed-nitrogen loss occurs in oxygen minimum zones (OMZs). Concentrations of O[subscript 2] and the sensitivity of the anaerobic N[subscript 2]-producing processes of anammox ...

Dalsgaard, Tage

492

Causal Inference and Prediction in Health Studies: Environmental Exposures and Schistosomiasis, HIV-1 Genotypic Susceptibility Scores and Virologic Suppression, and Risk of Hospital Readmission for Heart Failure Patients  

E-Print Network [OSTI]

hospitalization for congestive heart failure among Medicarepredictors of readmission for heart failure: a systematicof hospital readmission for heart failure: development of a

Sudat, Sylvia

2012-01-01T23:59:59.000Z

493

Glyphosate’s Suppression of Cytochrome P450 Enzymes and Amino Acid Biosynthesis by the Gut Microbiome: Pathways to Modern Diseases  

E-Print Network [OSTI]

Glyphosate, the active ingredient in Roundup[superscript ®], is the most popular herbicide used worldwide. The industry asserts it is minimally toxic to humans, but here we argue otherwise. Residues are found in the main ...

Samsel, Anthony

494

Suppression of nuclear spin diffusion at a GaAs/AlGaAs interface measured with a single quantum dot nano-probe  

E-Print Network [OSTI]

Nuclear spin polarization dynamics are measured in optically pumped individual GaAs/AlGaAs interface quantum dots by detecting the time-dependence of the Overhauser shift in photoluminescence (PL) spectra. Long nuclear polarization decay times of ~ 1 minute have been found indicating inefficient nuclear spin diffusion from the GaAs dot into the surrounding AlGaAs matrix in externally applied magnetic field. A spin diffusion coefficient two orders lower than that previously found in bulk GaAs is deduced.

A. E. Nikolaenko; E. A. Chekhovich; M. N. Makhonin; I. W. Drouzas; A. B. Vankov; J. Skiba-Szymanska; M. S. Skolnick; P. Senellart; A. Lemaitre; A. I. Tartakovskii

2009-01-15T23:59:59.000Z

495

Direct Determination of Trace-Level Haloacetic Acids in Drinking Water by Two-1 Dimensional Ion Chromatography with Suppressed Conductivity2  

E-Print Network [OSTI]

1 Direct Determination of Trace-Level Haloacetic Acids in Drinking Water by Two-1 Dimensional Ion thetreatment process of drinking water, disinfectants (chlorine, ozone, chlorine dioxide)13 react on water of the nine existing Halo-Acetic Acids (HAA) are commonly found15 in drinking water(Monochloroacetic acid MCAA

Boyer, Edmond