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Note: This page contains sample records for the topic "upper containment chamber" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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1

Vacuum chamber for containing particle beams  

DOE Patents (OSTI)

A vacuum chamber for containing a charged particle beam in a rapidly changing magnetic environment comprises a ceramic pipe with conducting strips oriented along the longitudinal axis of the pipe and with circumferential conducting bands oriented perpendicular to the longitudinal axis but joined with a single longitudinal electrical connection. When both strips and bands are on the outside of the ceramic pipe, insulated from each other, a high-resistance conductive layer such as nickel can be coated on the inside of the pipe.

Harvey, A.

1985-11-26T23:59:59.000Z

2

Ionisation chamber containing boron as a neutron detector in medical accelerator fields  

Science Journals Connector (OSTI)

......oxfordjournals.org August 2007 research-article POSTER Presentations Ionisation chamber containing boron...was partially supported by the Polish Ministry of Science and Higher Education under the grant No. 2P05D06530. The authors would......

M. Zielczynski; M. A. Gryzinski; N. Golnik; P. Tulik

2007-08-01T23:59:59.000Z

3

Ionization chamber  

DOE Patents (OSTI)

An ionization chamber has separate drift and detection regions electrically isolated from each other by a fine wire grid. A relatively weak electric field can be maintained in the drift region when the grid and another electrode in the chamber are connected to a high voltage source. A much stronger electric field can be provided in the detection region by connecting wire electrodes therein to another high voltage source. The detection region can thus be operated in a proportional mode when a suitable gas is contained in the chamber. High resolution output pulse waveforms are provided across a resistor connected to the detection region anode, after ionizing radiation enters the drift region and ionize the gas.

Walenta, Albert H. (Port Jefferson Station, NY)

1981-01-01T23:59:59.000Z

4

Flow chamber  

DOE Patents (OSTI)

A flow chamber having a vacuum chamber and a specimen chamber. The specimen chamber may have an opening through which a fluid may be introduced and an opening through which the fluid may exit. The vacuum chamber may have an opening through which contents of the vacuum chamber may be evacuated. A portion of the flow chamber may be flexible, and a vacuum may be used to hold the components of the flow chamber together.

Morozov, Victor (Manassas, VA)

2011-01-18T23:59:59.000Z

5

Chamber transport  

SciTech Connect

Heavy ion beam transport through the containment chamber plays a crucial role in all heavy ion fusion (HIF) scenarios. Here, several parameters are used to characterize the operating space for HIF beams; transport modes are assessed in relation to evolving target/accelerator requirements; results of recent relevant experiments and simulations of HIF transport are summarized; and relevant instabilities are reviewed. All transport options still exist, including (1) vacuum ballistic transport, (2) neutralized ballistic transport, and (3) channel-like transport. Presently, the European HIF program favors vacuum ballistic transport, while the US HIF program favors neutralized ballistic transport with channel-like transport as an alternate approach. Further transport research is needed to clearly guide selection of the most attractive, integrated HIF system.

OLSON,CRAIG L.

2000-05-17T23:59:59.000Z

6

Sleeve reaction chamber system  

DOE Patents (OSTI)

A chemical reaction chamber system that combines devices such as doped polysilicon for heating, bulk silicon for convective cooling, and thermoelectric (TE) coolers to augment the heating and cooling rates of the reaction chamber or chambers. In addition the system includes non-silicon-based reaction chambers such as any high thermal conductivity material used in combination with a thermoelectric cooling mechanism (i.e., Peltier device). The heat contained in the thermally conductive part of the system can be used/reused to heat the device, thereby conserving energy and expediting the heating/cooling rates. The system combines a micromachined silicon reaction chamber, for example, with an additional module/device for augmented heating/cooling using the Peltier effect. This additional module is particularly useful in extreme environments (very hot or extremely cold) where augmented heating/cooling would be useful to speed up the thermal cycling rates. The chemical reaction chamber system has various applications for synthesis or processing of organic, inorganic, or biochemical reactions, including the polymerase chain reaction (PCR) and/or other DNA reactions, such as the ligase chain reaction.

Northrup, M. Allen (Berkeley, CA); Beeman, Barton V. (San Mateo, CA); Benett, William J. (Livermore, CA); Hadley, Dean R. (Manteca, CA); Landre, Phoebe (Livermore, CA); Lehew, Stacy L. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA)

2009-08-25T23:59:59.000Z

7

Neutron-chamber detectors and applications  

SciTech Connect

Detector applications in Nuclear Safeguards and Waste Management have included measuring neutrons from fission and (alpha,n) reactions with well-moderated neutron proportional counters, often embedded in a slab of polyethylene. Other less-moderated geometries are useful for detecting both bare and moderated fission-source neutrons with good efficiency. The neutron chamber is an undermoderated detector design comprising a large, hollow, polyethylene-walled chamber containing one or more proportional counters. Neutron-chamber detectors are relatively inexpensive; can have large apertures, usually through a thin chamber wall; and offer very good detection efficiency per dollar. Neutron-chamber detectors have also been used for monitoring vehicles and for assaying large crates of transuranic waste. Our Monte Carlo calculations for a new application (monitoring low-density waste for concealed plutonium) illustrate the advantages of the hollow-chamber design for detecting moderated fission sources. 9 refs., 6 figs., 2 tabs.

Fehlau, P.E.; Atwater, H.F.; Coop, K.L.

1990-01-01T23:59:59.000Z

8

Chamber Clearing First Principles Modeling  

SciTech Connect

LIFE fusion is designed to generate 37.5 MJ of energy per shot, at 13.3 Hz, for a total average fusion power of 500 MW. The energy from each shot is partitioned among neutrons ({approx}78%), x-rays ({approx}12%), and ions ({approx}10%). First wall heating is dominated by x-rays and debris because the neutron mean free path is much longer than the wall thickness. Ion implantation in the first wall also causes damage such as blistering if not prevented. To moderate the peak-pulse heating, the LIFE fusion chamber is filled with a gas (such as xenon) to reduce the peak-pulse heat load. The debris ions and majority of the x-rays stop in the gas, which re-radiates this energy over a longer timescale (allowing time for heat conduction to cool the first wall sufficiently to avoid damage). After a shot, because of the x-ray and ion deposition, the chamber fill gas is hot and turbulent and contains debris ions. The debris needs to be removed. The ions increase the gas density, may cluster or form aerosols, and can interfere with the propagation of the laser beams to the target for the next shot. Moreover, the tritium and high-Z hohlraum debris needs to be recovered for reuse. Additionally, the cryogenic target needs to survive transport through the gas mixture to the chamber center. Hence, it will be necessary to clear the chamber of the hot contaminated gas mixture and refill it with a cool, clean gas between shots. The refilling process may create density gradients that could interfere with beam propagation, so the fluid dynamics must be studied carefully. This paper describes an analytic modeling effort to study the clearing and refilling process for the LIFE fusion chamber. The models used here are derived from first principles and balances of mass and energy, with the intent of providing a first estimate of clearing rates, clearing times, fractional removal of ions, equilibrated chamber temperatures, and equilibrated ion concentrations for the chamber. These can be used to scope the overall problem and provide input to further studies using fluid dynamics and other more sophisticated tools.

Loosmore, G

2009-06-09T23:59:59.000Z

9

The Environmental Chamber  

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

2 2 The Environmental Chamber Al Hodgson and Richard Allen test methyl chloride exposures using the environmental chamber. On the second floor of an unremarkable building at LBL, researchers are using a room within a room to smoke out indoor air pollutants. The environmental chamber is a stainless-steel-lined room of 540 ft cubed (20 meters cubed) which can be operated in several ways to meet the needs of different research projects, including studies for which a very low background is required. Scientists of the Indoor Environment Program and their collaborators use the chamber as a controlled indoor environment to study the behavior of a variety of indoor pollutants ranging from cigarette smoke to volatile organic compounds (VOCs) from new carpets. At the moment, four projects use the facility. Principal investigator Al

10

BNL | ATF Experimental Chambers  

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

Laser Injection Vacuum Chamber Located on beam line 1, the "Smith-Purcell box" has 140 liters of usable volume. Due to its size, it is mounted on a fixed platform. Hosted...

11

Mercury Chamber Considerations  

E-Print Network (OSTI)

Mercury Chamber Considerations V. Graves IDS-NF Target Studies July 2011 #12;2 Managed by UT-Battelle for the U.S. Department of Energy Mercury Chamber Considerations, July 2011 Flow Loop Review · 1 cm dia nozzle, 20 m/s jet requires 1.57 liter/sec mercury flow (94.2 liter/min, 24.9 gpm). · MERIT experiment

McDonald, Kirk

12

CALCULATION OF PULSED KICKER MAGNETIC FIELD ATTENUATION INSIDE BEAM CHAMBERS  

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

CALCULATION OF PULSED KICKER MAGNETIC FIELD ATTENUATION CALCULATION OF PULSED KICKER MAGNETIC FIELD ATTENUATION INSIDE BEAM CHAMBERS S. H. Kim January 8, 2001 1. Introduction and Summary The ceramic beam chambers in the sections of the kicker magnets for the beam injection and extraction in the Advanced Photon Source (APS) are made of alumina. The inner surface of the ceramic chamber is coated with a conductive paste. The choice of coating thickness is intended to reduce the shielding of the pulsed kicker magnetic field while containing the electromagnetic fields due to the beam bunches inside the chamber, and minimize the Ohmic heating due to the fields on the chamber [1]. The thin coating generally does not give a uniform surface resistivity for typical dimensions of the ceramic chambers in use. The chamber cross section is a circular or

13

Liquid Wall Chambers  

SciTech Connect

The key feature of liquid wall chambers is the use of a renewable liquid layer to protect chamber structures from target emissions. Two primary options have been proposed and studied: wetted wall chambers and thick liquid wall (TLW) chambers. With wetted wall designs, a thin layer of liquid shields the structural first wall from short ranged target emissions (x-rays, ions and debris) but not neutrons. Various schemes have been proposed to establish and renew the liquid layer between shots including flow-guiding porous fabrics (e.g., Osiris, HIBALL), porous rigid structures (Prometheus) and thin film flows (KOYO). The thin liquid layer can be the tritium breeding material (e.g., flibe, PbLi, or Li) or another liquid metal such as Pb. TLWs use liquid jets injected by stationary or oscillating nozzles to form a neutronically thick layer (typically with an effective thickness of {approx}50 cm) of liquid between the target and first structural wall. In addition to absorbing short ranged emissions, the thick liquid layer degrades the neutron flux and energy reaching the first wall, typically by {approx}10 x x, so that steel walls can survive for the life of the plant ({approx}30-60 yrs). The thick liquid serves as the primary coolant and tritium breeding material (most recent designs use flibe, but the earliest concepts used Li). In essence, the TLW places the fusion blanket inside the first wall instead of behind the first wall.

Meier, W R

2011-02-24T23:59:59.000Z

14

Secondary emission gas chamber  

E-Print Network (OSTI)

For a hadron calorimeter active element there is considered a gaseous secondary emis-sion detector (150 micron gap, 50 kV/cm). Such one-stage parallel plate chamber must be a radiation hard, fast and simple. A model of such detector has been produced, tested and some characteristics are presented.

V. In'shakov; V. Kryshkin; V. Skvortsov

2014-12-10T23:59:59.000Z

15

Improved wire chamber  

DOE Patents (OSTI)

An improved gas mixture for use with proportional counter devices, such as Geiger-Mueller tubes and drift chambers. The improved gas mixture provides a stable drift velocity while eliminating wire aging caused by prior art gas mixtures. The new gas mixture is comprised of equal parts argon and ethane gas and having approximately 0.25% isopropyl alcohol vapor. 2 figs.

Atac, M.

1987-05-12T23:59:59.000Z

16

Final report for NIF chamber dynamics studies  

SciTech Connect

The National Ignition Facility (NIF), a 1.8 MJ, 192 laser beam facility, will have anticipated fusion yields of up to 20 MJ from D-T pellets encased in a gold hohlraum target. The energy emitted from the target in the form of x rays, neutrons, target debris kinetic energy, and target shrapnel will be contained in a 5 m. radius spherical target chamber. various diagnostics will be stationed around the target at varying distances from the target. During each shot, the target will emit x rays that will vaporize nearby target facing surfaces including those of the diagnostics, the target positioner, and other chamber structures. This ablated vapor will be transported throughout the chamber, and will eventually condense and deposit on surfaces in the chamber, including the final optics debris shields. The research at the University of California at Berkeley relates primarily to the NIF chamber dynamics. The key design issues are the ablation of the chamber structures, transport of the vapor through the chamber and the condensation or deposition processes of those vaporized materials. An understanding of these processes is essential in developing a concept for protecting the fina optics debris shields from an excessive coating (> 10 A) of target debris and ablated material, thereby prolonging their lifetime between change-outs. At Berkeley, we have studied the physical issues of the ablation process and the effects of varying materials, the condensation process of the vaporized material, and design schemes that can lower the threat posed to the debris shields by these processes. The work or portions of the work completed this year have been published in several papers and a dissertation [l-5].

Burnham, A; Peterson, P F; Scott, J M

1998-09-01T23:59:59.000Z

17

Nuclear Instruments and Methods in Physics Research A 469 (2001) 4754 The HERMES forward tracking chambers: construction,  

E-Print Network (OSTI)

, which use an Ar=CF4=CO2 (90 : 5 : 5) gas mixture. No degradation in chamber performance has been. PACS: 29.40.Cs; 07.89.+b Keywords: Wire chamber; CF4 gas; Aging studies; Radiation damage; HERMES rate operation of chambers with gas mixtures containing CF4. 2. Mechanical design Each chamber consists

18

Multi-anode ionization chamber  

DOE Patents (OSTI)

The present invention includes a high-energy detector having a cathode chamber, a support member, and anode segments. The cathode chamber extends along a longitudinal axis. The support member is fixed within the cathode chamber and extends from the first end of the cathode chamber to the second end of the cathode chamber. The anode segments are supported by the support member and are spaced along the longitudinal surface of the support member. The anode segments are configured to generate at least a first electrical signal in response to electrons impinging thereon.

Bolotnikov, Aleksey E. (South Setauket, NY); Smith, Graham (Port Jefferson, NY); Mahler, George J. (Rocky Point, NY); Vanier, Peter E. (Setauket, NY)

2010-12-28T23:59:59.000Z

19

Development of bubble chambers with sensitivity to WIMPs , J. I. Collarb*  

E-Print Network (OSTI)

of high- stability bubble chambers containing heavy liquids as an alternative to SDDs. The use of a stableDevelopment of bubble chambers with sensitivity to WIMPs L. Bonda , J. I. Collarb* , J. Elya , M@uchicago.edu We constructed a small bubble chamber, with special features needed to search for WIMPs: long

Collar, Juan I.

20

upper (hydroelectric) development  

Science Journals Connector (OSTI)

upper (hydroelectric) development, upper (hydroelectric) station, upstream (hydroelectric) development, upstream (hydroelectric) station ? Oberstufe f, oberes Wasserkraftwerk n, Oberliegerkraftwerk

2014-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

The four-chambered heart.  

E-Print Network (OSTI)

??The Four-Chambered Heart is a collection of four short stories centering around themes and motifs most popular in the genre of magical realism. Important to (more)

Christie, Jennifer L.

2013-01-01T23:59:59.000Z

22

LRL 25-inch Bubble Chamber  

DOE R&D Accomplishments (OSTI)

The recently completed 25-inch hydrogen bubble chamber combines excellent picture quality with a fast operating cycle. The chamber has a unique optical system and is designed to take several pictures each Bevatron pulse, in conjunction with the Bevatron rapid beam ejection system.

Alvarez, L. W.; Gow, J. D.; Barrera, F.; Eckman, G.; Shand, J.; Watt, R.; Norgren, D.; Hernandez, H. P.

1964-07-08T23:59:59.000Z

23

MFE Chamber Overview Mohamed Abdou  

E-Print Network (OSTI)

MFE Chamber Overview Mohamed Abdou Presented to: Chamber Technology Peer Review UCLA, Los Angeles/Be/structure thermomechanics interactions - Framework: IEA collaboration; part of US strategy to gain access to the larger to VNS; sparked world interest - IEA initiated a study in 1994 on VNS, called HVPNS. A scholarly

Abdou, Mohamed

24

Ion chamber based neutron detectors  

DOE Patents (OSTI)

A neutron detector with monolithically integrated readout circuitry, including: a bonded semiconductor die; an ion chamber formed in the bonded semiconductor die; a first electrode and a second electrode formed in the ion chamber; a neutron absorbing material filling the ion chamber; and the readout circuitry which is electrically coupled to the first and second electrodes. The bonded semiconductor die includes an etched semiconductor substrate bonded to an active semiconductor substrate. The readout circuitry is formed in a portion of the active semiconductor substrate. The ion chamber has a substantially planar first surface on which the first electrode is formed and a substantially planar second surface, parallel to the first surface, on which the second electrode is formed. The distance between the first electrode and the second electrode may be equal to or less than the 50% attenuation length for neutrons in the neutron absorbing material filling the ion chamber.

Derzon, Mark S; Galambos, Paul C; Renzi, Ronald F

2014-12-16T23:59:59.000Z

25

Argonne starts huilding huge bubble chamber  

Science Journals Connector (OSTI)

Argonne starts huilding huge bubble chamber ... Construction has started on the $10 million bubble chamber to be built at Argonne National Laboratory, Argonne, 111. ... Claimed by Argonne to be the world's largest chamber, it will be completed in 1969. ...

1967-06-26T23:59:59.000Z

26

Light diffusing fiber optic chamber  

DOE Patents (OSTI)

A light diffusion system for transmitting light to a target area. The light is transmitted in a direction from a proximal end to a distal end by an optical fiber. A diffusing chamber is operatively connected to the optical fiber for transmitting the light from the proximal end to the distal end and transmitting said light to said target area. A plug is operatively connected to the diffusing chamber for increasing the light that is transmitted to the target area.

Maitland, Duncan J. (Lafayette, CA)

2002-01-01T23:59:59.000Z

27

Directional muon jet chamber for a muon collider (Groovy Chamber)  

SciTech Connect

A directional jet drift chamber with PAD readout is proposed here which can select vertex originated muons within a given time window and eliminate those muons which primarily originate upstream, using only a PAD readout. Drift time provides the Z-coordinate, and the center of gravity of charge distribution provides the r-{psi} coordinates. Directionality at the trigger level is obtained by the timing measurement from the PAD hits within a given time window. Because of the long drift time between the bunch crossings, a muon collider enables one to choose a drift distance in the drift chamber as long as 50 cm. This is an important factor in reducing cost of drift chambers which have to cover relatively large areas.

Atac, M. [Fermi National Accelerator Lab., Batavia, IL (United States)]|[Univ. of California, Los Angeles, CA (United States)

1996-10-01T23:59:59.000Z

28

SUMMARY ON TITANIUM NITRIDE COATING OF SNS RING VACUUM CHAMBERS.  

SciTech Connect

The inner surfaces of the 248 m Spallation Neutron Source (SNS) accumulator ring vacuum chambers are coated with {approx}100nm of titanium nitride (TiN) to reduce the secondary electron yield (SEY) of the chamber walls. There are approximately 135 chambers and kicker modules, some up to 5m in length and 36cm in diameter, coated with TiN. The coating is deposited by means of reactive DC magnetron sputtering -using a - cylindrical cathode with internal permanent magnets. This cathode configuration generates a deposition-rate sufficient to meet the required production schedule and produces stoichiometric films with good adhesion, low SEY and acceptable outgassing. Moreover, the cathode magnet configuration allows for simple changes in length and has been adapted to coat the wide variety of chambers and components contained within the arcs, injection, extraction, collimation and RF straight sections. Chamber types and quantities as well as the cathode configurations are presented herein. The unique coating requirements of the injection kicker ceramic chambers and the extraction kicker ferrite surface will be emphasized. A brief summary of the salient coating properties is given including the interdependence of SEY as a function of surface roughness and its effect on outgassing.

TODD, R.; HE, P.; HSEUH, H.C.; WEISS, D.

2005-05-16T23:59:59.000Z

29

Harvesting Energy from Wastewater in a 2-Chamber  

E-Print Network (OSTI)

Harvesting Energy from Wastewater in a 2-Chamber Microbial Fuel Cell Sikandar Present day wastewater treatment plants utilize high amounts of energy and are costly to operate. These conventional wastewater treatment plants utilize aerobic bacteria. Organic material in wastewater contains energy that can

30

Isothermally heatsunk diffusion cloud chamber refrigerator  

SciTech Connect

This patent describes a diffusion cloud chamber isothermally heatsunk refrigerator which comprises: a heatsink consisting of two phases of a saturated substance existing in thermodynamic equilibrium at constant pressure and therefore at constant temperature, contained in a reservoir; a means of pressure damping to maintain constant pressure, as the ratio of the two phases present changes and introduces volumetric changes in the substance; a cooling member which transfer heat from vapor in contact with the cooling member surface to the ''cold side'' of a Peltier thermoelectric element with which the cooling member is in thermal contact; a Peltier thermoelectric element which removes the heat supplied by the cooling member from its ''cold side'' and pumps it to the ''hot side'' when driven by an electric current; and a means of transferring heat from the ''hot side'' of the Peltier thermoelectric element to the two-phase isothermal substance in the reservoir.

Menocal, S.G.

1987-05-05T23:59:59.000Z

31

Recent Advances in Chamber Science and Technology  

E-Print Network (OSTI)

Recent Advances in Chamber Science and Technology Mohamed Abdou April 8, 2002ISFNT-6 San Diego, USA #12;Recent Advances in Chamber Science & Technology OutlineOutline · Highlights of Major World - Experiments - Analysis & Design #12;Highlights of Major World Programs on Chamber (Blanket) Technology

Abdou, Mohamed

32

Mercury Chamber NF-IDS Meeting  

E-Print Network (OSTI)

-Battelle for the U.S. Department of Energy Mercury Chamber Update Oct 2011 Starting Point: Coil and Shielding Concept IDS120H #12;3 Managed by UT-Battelle for the U.S. Department of Energy Mercury Chamber Update Oct 2011 · Penetrations (ports) into chamber ­ Nozzle ­ Hg drains (overflow and maintenance) ­ Vents (in and out) ­ Beam

McDonald, Kirk

33

NIF Target Chamber Dedicated | National Nuclear Security Administratio...  

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

Dedicated NIF Target Chamber Dedicated June 11, 1999 NIF Target Chamber Dedicated Livermore, CA Secretary Richardson dedicates the National Ignition Facility target chamber at...

34

The Upper Atmosphere Observatory  

Science Journals Connector (OSTI)

...with *the plasma frethe progress...explorcreated an even larger number of...the upper atmosphere and ionosphere...the upper atmosphere. For this...ionospheric plasma motion simul-taneously...field is large, the horizontal...resolved. The atmospheric gravity waves...simul-taneously at a large number of...two regions plasma drifts separated...

J. V. Evans

1972-05-05T23:59:59.000Z

35

Containment system for supercritical water oxidation reactor  

DOE Patents (OSTI)

A system is described for containment of a supercritical water oxidation reactor in the event of a rupture of the reactor. The system includes a containment for housing the reaction vessel and a communicating chamber for holding a volume of coolant, such as water. The coolant is recirculated and sprayed to entrain and cool any reactants that might have escaped from the reaction vessel. Baffles at the entrance to the chamber prevent the sprayed coolant from contacting the reaction vessel. An impact-absorbing layer is positioned between the vessel and the containment to at least partially absorb momentum of any fragments propelled by the rupturing vessel. Remote, quick-disconnecting fittings exterior to the containment, in cooperation with shut-off valves, enable the vessel to be isolated and the system safely taken off-line. Normally-closed orifices throughout the containment and chamber enable decontamination of interior surfaces when necessary. 2 figures.

Chastagner, P.

1994-07-05T23:59:59.000Z

36

Vacuum chamber for ion manipulation device  

DOE Patents (OSTI)

An ion manipulation method and device is disclosed. The device includes a pair of substantially parallel surfaces. An array of inner electrodes is contained within, and extends substantially along the length of, each parallel surface. The device includes a first outer array of electrodes and a second outer array of electrodes. Each outer array of electrodes is positioned on either side of the inner electrodes, and is contained within and extends substantially along the length of each parallel surface. A DC voltage is applied to the first and second outer array of electrodes. A RF voltage, with a superimposed electric field, is applied to the inner electrodes by applying the DC voltages to each electrode. Ions either move between the parallel surfaces within an ion confinement area or along paths in the direction of the electric field, or can be trapped in the ion confinement area. A predetermined number of pairs of surfaces are disposed in one or more chambers, forming a multiple-layer ion mobility cyclotron device.

Chen, Tsung-Chi; Tang, Keqi; Ibrahim, Yehia M; Smith, Richard D; Anderson, Gordon A; Baker, Erin M

2014-12-09T23:59:59.000Z

37

Georges Charpak, Particle Detectors, and Multiwire Chambers  

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

Georges Charpak, Particle Detectors, and Multiwire Chambers Georges Charpak, Particle Detectors, and Multiwire Chambers Resources with Additional Information · Patents Georges Charpak Courtesy of CERN Nobel laureate Georges Charpak [was] a pioneer in the art and science of particle detection ... . [He] developed a host of particle detectors used throughout experimental particle physics. In 1968, he invented and developed the first multiwire proportional chamber, for which he won the [Physics] Nobel Prize in 1992 ... . The multiwire chamber differed from earlier detectors in the speed with which it could record particle tracks from a collision-millions per second, rather than one or two per second for bubble chambers. The speed of the multiwire chamber and its successor technologies, along with their extraordinary precision, led to a revolution in particle physics ... . The technology that Charpak pioneered also finds applications in medicine and industry.

38

Fluidized wall for protecting fusion chamber walls  

DOE Patents (OSTI)

Apparatus for protecting the inner wall of a fusion chamber from microexplosion debris, x-rays, neutrons, etc. produced by deuterium-tritium (DT) targets imploded within the fusion chamber. The apparatus utilizes a fluidized wall similar to a waterfall comprising liquid lithium or solid pellets of lithium-ceramic, the waterfall forming a blanket to prevent damage of the structural materials of the chamber.

Maniscalco, James A. (Danville, CA); Meier, Wayne R. (Livermore, CA)

1982-01-01T23:59:59.000Z

39

meters in CO2 euthanasia chambers. All CO2 euthanasia chambers in both  

E-Print Network (OSTI)

meters in CO2 euthanasia chambers. All CO2 euthanasia chambers in both the facilities and laboratories will need flow meters. ULAR is currently in the process of identifying a cost-effective, accurate, and durable flow meter to install in all of the CO2 chambers in all of the vivaria. When a specific model

Bushman, Frederic

40

IFE Chamber Technology Testing Program In NIF and Chamber Development Test Plan Mohamed A. Abdou  

E-Print Network (OSTI)

. As ITER serves as a fusion testing facility for magnetic fusion energy (MFE) nuclear technology componentIFE Chamber Technology Testing Program In NIF and Chamber Development Test Plan Mohamed A. Abdou chamber technology testing program in NIF involoving: criteria for evaluation

Abdou, Mohamed

Note: This page contains sample records for the topic "upper containment chamber" 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

Performance of a Single-Chamber Microbial Fuel Cell Degrading Phenol: Effect of Phenol Concentration and External Resistance  

Science Journals Connector (OSTI)

The performance of a single-chamber microbial fuel cell (MFC) using wastewater containing phenol as the anodic fuel was evaluated. The evaluation was performed considering ... presence of different phenol concent...

Germn Buitrn; Ivn Moreno-Andrade

2014-09-01T23:59:59.000Z

42

The Upper Atmosphere Observatory  

Science Journals Connector (OSTI)

...DATA, JOURNAL OF ATMOSPHERIC AND TERRESTRIAL...IN NEAR-EARTH PLASMA, SPACE SCIENCE...INVESTIGATION OF WHISTLING ATMOSPHERICS, PHILOSOPHICAL...TRANSPOLAR EXOSPHERIC PLASMA .1. PLASMASPHERE...dynamics of the upper atmosphere. For this purpose...the ionospheric plasma motion simul-taneously...

J. V. Evans

1972-05-05T23:59:59.000Z

43

Engineering design of a hypobaric plant growth chamber  

E-Print Network (OSTI)

plants with the chamber in place and removed. With the chamber removed, PAR levels were recorded as 461 []mol m? s?; inside the complete chamber the level decreased to 408 []mol m? s?, a difference of 11.5%....

Purswell, Joseph Lawrence

2002-01-01T23:59:59.000Z

44

Virtual Design of Stirling Engine Combustion Chamber  

Science Journals Connector (OSTI)

The paper deals with the designing of a combustion chamber of the Stirling engine using the CFD approach. Virtual prototypes enabled ... . The presented results help to increase the Stirling engine efficiency tog...

Z. Kaplan; P. Novotn; V. Pt?k

2010-01-01T23:59:59.000Z

45

Manufacturing and qualification of UHV chambers  

Science Journals Connector (OSTI)

Vacuum chambers or vacuum components that are widespread in research and in industry must fulfill high degrees of cleanliness, especially if they are required for ultra-high-vacuum (UHV) applications. It is shown...

F. Pink; G. Schmidt

2004-03-01T23:59:59.000Z

46

Neutron And Gamma Detector Using An Ionization Chamber With An...  

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

Neutron And Gamma Detector Using An Ionization Chamber Neutron And Gamma Detector Using An Ionization Chamber With An Integrated Body And Moderator A detector for detecting...

47

Cloud chamber visualization of primary cosmic rays  

SciTech Connect

From 1948 until 1963, cloud chambers were carried to the top of the atmosphere by balloons. From these flights, which were begun by Edward P. Ney at the University of Minnesota, came the following results: discovery of heavy cosmic ray nuclei, development of scintillation and cherenkov detectors, discovery of cosmic ray electrons, and studies of solar proton events. The history of that era is illustrated here by cloud chamber photographs of primary cosmic rays.

Earl, James A. [Department of Astronomy, University of Maryland, College Park MD (United States)

2013-02-07T23:59:59.000Z

48

Cost Containment  

Science Journals Connector (OSTI)

Cost containment in health care involves awide ... , the growth rate of expenditure or certain costs of health care services. These measures include ... patient education, etc. The reasons for increased cost ...

2008-01-01T23:59:59.000Z

49

Upper East Fork Poplar Creek  

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

This document explains the cleanup activities and any use limitations for the land surrounding the Upper East Fork Poplar Creek.

50

Calculating Radiative Heat Transfer in an Axisymmetric Closed Chamber: An Application  

E-Print Network (OSTI)

Calculating Radiative Heat Transfer in an Axisymmetric Closed Chamber: An Application to Crystal University of New York at Stony Brook Stony Brook N.Y. 11794 ABSTRACT Radiative heat transfer plays simulating radiative heat transfer in the crystal and in the region above the melt containing gas under

New York at Stoney Brook, State University of

51

Anode supported single chamber solid oxide fuel cells operating in exhaust gases of thermal engine  

E-Print Network (OSTI)

Anode supported single chamber solid oxide fuel cells operating in exhaust gases of thermal engine fuel cells are usually described as devices able to convert chemical energy into electrical energy. Conventional solid oxide fuel cells are separated into two compartments containing each electrode split

Boyer, Edmond

52

E-Print Network 3.0 - atlas muon chambers Sample Search Results  

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

chambers Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas muon chambers...

53

E-Print Network 3.0 - atlas muon chamber Sample Search Results  

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

chamber Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas muon chamber...

54

A Cosmic Ray Measurement Facility for ATLAS Muon Chambers  

E-Print Network (OSTI)

Monitored Drift Tube (MDT) chambers will constitute the large majority of precision detectors in the Muon Spectrometer of the ATLAS experiment at the Large Hadron Collider at CERN. For commissioning and calibration of MDT chambers, a Cosmic Ray Measurement Facility is in operation at Munich University. The objectives of this facility are to test the chambers and on-chamber electronics, to map the positions of the anode wires within the chambers with the precision needed for standalone muon momentum measurement in ATLAS, and to gain experience in the operation of the chambers and on-line calibration procedures. Until the start of muon chamber installation in ATLAS, 88 chambers built at the Max Planck Institute for Physics in Munich have to be commissioned and calibrated. With a data taking period of one day individual wire positions can be measured with an accuracy of 8.3 micrometers in the chamber plane and 27 micrometers in the direction perpendicular to that plane.

O. Biebel; M. Binder; M. Boutemeur; A. Brandt; J. Dubbert; G. Duckeck; J. Elmsheuser; F. Fiedler; R. Hertenberger; O. Kortner; T. Nunnemann; F. Rauscher; D. Schaile; P. Schieferdecker; A. Staude; W. Stiller; R. Stroehmer; R. Vertesi

2003-07-30T23:59:59.000Z

55

Upper Los Alamos Canyon Cleanup  

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

Upper Los Alamos Canyon Cleanup Upper Los Alamos Canyon Cleanup Upper Los Alamos Canyon Cleanup The Upper Los Alamos Canyon Project involves cleaning up hazardous materials left over from some of the Laboratory's earliest activities. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Located along Los Alamos Canyon from 7th Street to the Pajarito Ski Hill, the Upper Los Alamos Canyon Project involves examining sites in present and former Laboratory technical areas to see if any further environmental cleanup actions are needed. If not, the Laboratory can apply to have these sites removed permanently from LANL's Hazardous Waste Permit, meaning that no further actions are needed at those sites. Among the 115 sites included in the Upper LA Canyon Project, 54 have been

56

Upper Los Alamos Canyon Cleanup  

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

septic tanks, sanitary and industrial waste lines, storm drains, incinerators, transformer sites, and areas in which soil has been contaminated. The Upper Los Alamos Canyon...

57

Final report for NIF chamber dynamics studies, final rept (May 1997), Subcontract No. B291847  

SciTech Connect

The National Ignition Facility (NIF), a 1.8 MJ, 192 laser beam facility, will have anticipated fusion yields of up to 20 MJ from D-T pellets encased in a gold hohlraum target. The energy emitted from the target in the form of x rays, neutrons, target debris kinetic energy, and target shrapnel will be contained in a 5 m. radius spherical target chamber. Various diagnostics will be stationed around the target at varying distances from the target. During each shot, the target will emit x rays that will vaporize nearby target facing surfaces including those of the diagnostics, the target positioner, and other chamber structures. This ablated vapor will be transported throughout the chamber, and will eventually condense and deposit on surfaces in the chamber, including the final optics debris shields. The research at the University of California at Berkeley relates primarily to the NIF chamber dynamics. The key design issues are the ablation of the chamber structures, transport of the vapor through the chamber and the condensation or deposition processes of those vaporized materials. An understanding of these processes is essential in developing a concept for protecting the final optics debris shields from an excessive coating (> 10 {Angstrom}) of target debris and ablated material, thereby prolonging their lifetime between change- outs. At Berkeley, we have studied the physical issues of the ablation process and the effects of varying materials, the condensation process of the vaporized material, and design schemes that can lower the threat posed to the debris shields by these processes. In addition to the work described briefly above, we performed extensive analysis of the target-chamber thermal response to in- chamber CO{sub 2} Cleaning and of work performed to model the behavior of silica vapor. The work completed this year has been published in several papers and a dissertation [1-6]. This report provides a summary of the work completed this year, as well as copies fo presentation materials that have not been published elsewhere. In particular, the Appendix contains copies of presentations made on CO{sub 2} cleaning that are not available elsewhere.

Peterson, P.F.; Jin, H.; Scott, J.M. [University of California, Berkeley (United States)

1997-07-01T23:59:59.000Z

58

Relation between the coking-chamber height, the coking pressure, and the packing density of regular or partially briquetted coal batch  

Science Journals Connector (OSTI)

Since coking coal is characterized by both elasticity and ductility in the plastic state, the coal charge of coke furnaces that contains a plastic layer exerts pressure (coking pressure) on the chamber walls. The...

L. V. Kopeliovich; V. I. Sukhorukov; V. I. Shvetsov

2012-07-01T23:59:59.000Z

59

On-Site Wastewater Treatment Systems: Leaching Chambers  

E-Print Network (OSTI)

Leaching chambers distribute treated wastewater into the soil. This publication lists the advantages and disadvantages of leaching chamber systems, explains how to maintain them and gives estimates of costs....

Lesikar, Bruce J.

2000-02-04T23:59:59.000Z

60

Blood meal host preferences of Culex salinarius Coquillett (Diptera : culicidae) in Chambers County, Texas  

E-Print Network (OSTI)

: Culicidae) in Chambers County, Texas. (December 1994) John Paul Grieco, B. S. , University of Notre Dame Chair of Advisory Committee: Dr. Jimmy K. Olson Bloodmeal host preferences were assessed for ~ sQiDgi~ populations occurring along the upper Gulf...)(Seeley and Bickley 1974) and St. Louis encephalitis (Nayar et al. 1986) . Also, ~x. B~l' -a~i populations are often found in areas that are associated with large numbers of avian hosts which serve as possible reservoirs for eastern equine encephalitis (EEE...

Grieco, John Paul

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Reduce Steam Trap Failures at Chambers Works  

E-Print Network (OSTI)

Ultrasonic Inspection At least 2 times per year Steam Trap Surveyor Submit reports to area management, energy team, and reliability engineers for each area every month Steam Trap Team Leader Control Plan ? Process Owner agrees...Reduce Steam Trap Failures at Chambers Works GB/BB Name: Cyndi Kouba Mentor/MBB: Andrew Degraff Team Members Michael Crowley(Site Energy Lead), (Charlie) Flanigan (Aramids-maintenance), Ben Snyder (Aramids-ATO), Michael Scruggs (Central...

Kouba, C.

62

Vacuum chamber with a supersonic-flow aerodynamic window  

DOE Patents (OSTI)

A supersonic flow aerodynamic window is disclosed whereby a steam ejector situated in a primary chamber at vacuum exhausts superheated steam toward an orifice to a region of higher pressure, creating a barrier to the gas in the region of higher pressure which attempts to enter through the orifice. In a mixing chamber outside and in fluid communication with the primary chamber, superheated steam and gas are combined into a mixture which then enters the primary chamber through the orifice. At the point of impact of the ejector/superheated steam and the incoming gas/superheated steam mixture, a barrier is created to the gas attempting to enter the ejector chamber. This barrier, coupled with suitable vacuum pumping means and cooling means, serves to keep the steam ejector and primary chamber at a negative pressure, even though the primary chamber has an orifice to a region of higher pressure.

Hanson, C.L.

1980-10-14T23:59:59.000Z

63

Vacuum chamber with a supersonic flow aerodynamic window  

DOE Patents (OSTI)

A supersonic flow aerodynamic window, whereby a steam ejector situated in a primary chamber at vacuum exhausts superheated steam toward an orifice to a region of higher pressure, creating a barrier to the gas in the region of higher pressure which attempts to enter through the orifice. In a mixing chamber outside and in fluid communication with the primary chamber, superheated steam and gas are combined into a mixture which then enters the primary chamber through the orifice. At the point of impact of the ejector/superheated steam and the incoming gas/superheated steam mixture, a barrier is created to the gas attempting to enter the ejector chamber. This barrier, coupled with suitable vacuum pumping means and cooling means, serves to keep the steam ejector and primary chamber at a negative pressure, even though the primary chamber has an orifice to a region of higher pressure.

Hanson, Clark L. (Livermore, CA)

1982-01-01T23:59:59.000Z

64

Measurement and Compensation of BPM Chamber Motion in HLS  

SciTech Connect

Significant horizontal drifts in the beam orbit in the storage ring of HLS (Hefei Light Source) have been seen for many years. What leads to the motion of Beam Position Monitor (BPM) chamber is thermal expansion mainly caused by the synchrotron light. To monitor the BPM chamber motions for all BPMs, a BPM chamber motion measurement system is built in real-time. The raster gauges are used to measure the displacements. The results distinctly show the relation between the BPM chamber motion and the beam current. To suppress the effect of BPM chamber motion, a compensation strategy is implemented at HLS. The horizontal drifts of beam orbit have been really suppressed within 20{mu}m without the compensation of BPM chamber motion in the runtime.

Li, J. W.; Sun, B. G.; Cao, Y.; Xu, H. L.; Lu, P.; Li, C.; Xuan, K.; Wang, J. G. [NSRL, School of Nuclear Science and Technology, University of Science and Technology of China Hefei, Anhui230029 (China)

2010-06-23T23:59:59.000Z

65

Tests of a Novel Design of Resistive Plate Chambers  

E-Print Network (OSTI)

A novel design of Resistive Plate Chambers (RPCs), using only a single resistive plate, is being proposed. Based on this design, two large size prototype chambers were constructed and were tested with cosmic rays and in particle beams. The tests confirmed the viability of this new approach. In addition to showing an improved single-particle response compared to the traditional 2-plate design, the novel chambers also prove to be suitable for calorimetric applications.

Bilki, B; Freund, B; Neubser, C; Onel, Y; Repond, J; Schlereth, J; Xia, L

2015-01-01T23:59:59.000Z

66

Bubble Chambers for Experiments in Nuclear Astrophysics  

E-Print Network (OSTI)

A bubble chamber has been developed to be used as an active target system for low energy nuclear astrophysics experiments. Adopting ideas from dark matter detection with superheated liquids, a detector system compatible with gamma-ray beams has been developed. This detector alleviates some of the limitations encountered in standard measurements of the minute cross sections of interest to stellar environments. While the astrophysically relevant nuclear reaction processes at hydrostatic burning temperatures are dominated by radiative captures, in this experimental scheme we measure the time-reversed processes. Such photodisintegrations allow us to compute the radiative capture cross sections when transitions to excited states of the reaction products are negligible. Due to the transformation of phase space, the photodisintegration cross sections are up to two orders of magnitude higher. The main advantage of the new target-detector system is a density several orders of magnitude higher than conventional gas tar...

DiGiovine, B; Holt, R J; Rehm, K E; Raut, R; Robinson, A; Sonnenschein, A; Rusev, G; Tonchev, A P; Ugalde, C

2015-01-01T23:59:59.000Z

67

Concept for Reducing Hall Thruster Chamber Wall Erosion with...  

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

Concept for Reducing Hall Thruster Chamber Wall Erosion with Lithium Vapor Shielding. Hall thrusters have been established as a compact and reliable means for satellite...

68

Dielectric liquid ionization chambers for detecting fast neutrons  

E-Print Network (OSTI)

Three ionization chambers with different geometries have been constructed and filled with dielectric liquids for detection of fast neutrons. The three dielectric liquids studied were Tetramethylsilane (TMS), Tetramethylpentane ...

Boyd, Erin M

2008-01-01T23:59:59.000Z

69

Carbon dioxide and methane emissions from interfluvial wetlands in the upper Negro River basin, Brazil  

Science Journals Connector (OSTI)

Extensive interfluvial wetlands occur in the upper Negro River basin (Brazil) and contain a mosaic of vegetation dominated by emergent grasses and sedges with patches of shrubs and palms. To characterize the rele...

Lauren Belger; Bruce R. Forsberg; John M. Melack

2011-09-01T23:59:59.000Z

70

Parallel plate avalanche chamber as an endcap detector for Time Projection Chamber  

SciTech Connect

A small, 10 x 10 cm/sup 2/, parallel plate avalanche counter has been tested paying special attention to those features which can be important in the Time Projection Chamber. The structure of the test chamber is shown. It has a conversion and drift volume, 11 mm thick, delimited by two stainless steel cross wire grids, of 100 ..mu..m wire diameter and 500 ..mu..mm pitch, identified by HV1 and HV2. The anode is made of thick wires, 100 ..mu..m in diameter spaced every 500 ..mu..m. The amplification gap is 4 mm thick. Below the anode, 1 mm apart, we have paced an identical wire plane, HV4, with wires perpendicular to the anode wires. Both electrodes are equipped with electronics and read out. All measurements were performed with a mixture of argon and methane (83% - 17%), a typical gas for Time Projection Chambers. A multiplication factor up to 10/sup 5/ was attained.

Peisert, A.

1984-01-01T23:59:59.000Z

71

Overview of Chamber and Power Plant Designs for IFE  

E-Print Network (OSTI)

, to be published in 2011, (ISBN 9780470894392) I will review some of the more complete integrated design studies&E are choice of materials, chamber and building design, tritium inventory, design of tritium processing systemsOverview of Chamber and Power Plant Designs for IFE Wayne Meier Deputy Program Leader Fusion Energy

72

Heart chambers and whole heart segmentation techniques: review  

E-Print Network (OSTI)

Heart chambers and whole heart segmentation techniques: review Dongwoo Kang Jonghye Woo Piotr J://electronicimaging.spiedigitallibrary.org/ on 01/15/2014 Terms of Use: http://spiedl.org/terms #12;Heart chambers and whole heart segmentation, and reproducible segmentation methods. Figure 1 illustrates an example of segmentation of heart on CT scan. A

Kuo, C.-C. "Jay"

73

Self-contained hot-hollow cathode gun source assembly  

DOE Patents (OSTI)

A self-contained hot-hollow cathode gun source assembly for use in a vacuum chamber includes a crucible block having a hot-hollow cathode gun mounted underneath and providing a hole for the magnetic deflection of the ion/electron beam into a crucible on top the block.

Zeren, Joseph D. (Boulder, CO)

1986-01-01T23:59:59.000Z

74

Self-contained hot-hollow cathode gun source assembly  

DOE Patents (OSTI)

A self-contained hot-hollow cathode gun source assembly for use in a vacuum chamber includes a crucible block having a hot-hollow cathode gun mounted underneath and providing a hole for the magnetic deflection of the ion/electron beam into a crucible on top the block.

Zeren, J.D.

1984-08-01T23:59:59.000Z

75

Miniature self-contained vacuum compatible electronic imaging microscope  

DOE Patents (OSTI)

A vacuum compatible CCD-based microscopic camera with an integrated illuminator. The camera can provide video or still feed from the microscope contained within a vacuum chamber. Activation of an optional integral illuminator can provide light to illuminate the microscope subject. The microscope camera comprises a housing with a objective port, modified objective, beam-splitter, CCD camera, and LED illuminator.

Naulleau, Patrick P. (Oakland, CA); Batson, Phillip J. (Alameda, CA); Denham, Paul E. (Crockett, CA); Jones, Michael S. (San Francisco, CA)

2001-01-01T23:59:59.000Z

76

NIF Target Chamber Dedicated | National Nuclear Security Administration  

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

NIF Target Chamber Dedicated | National Nuclear Security Administration NIF Target Chamber Dedicated | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > NIF Target Chamber Dedicated NIF Target Chamber Dedicated June 11, 1999 Livermore, CA NIF Target Chamber Dedicated Secretary Richardson dedicates the National Ignition Facility target

77

A mechanical mode-stirred reverberation chamber with chaotic geometry  

E-Print Network (OSTI)

A previous research on multivariate approach to the calculation of reverberation chamber correlation matrices is used to calculate the number of independent positions in a mode-stirred reverberation chamber. Anomalies and counterintuitive behavior are observed in terms of number of correlated matrix elements with respect to increasing frequency. This is ascribed to the regular geometry forming the baseline cavity (screened room) of a reverberation chamber, responsible for localizing energy and preserving regular modes (bouncing ball modes). Smooth wall deformations are introduced in order to create underlying Lyapunov instability of rays and then destroy survived regular modes. Numerical full-wave simulations are performed for a reverberation chamber with corner hemispheres and (off-)center wall spherical caps. Field sampling is performed by moving a mechanical carousel stirrer. It is found that wave-chaos inspired baseline geometries improve chamber performances in terms of lowest usable frequencies and number of independent cavity realizations of mechanical stirrers.

Gabriele Gradoni; Franco Moglie; Valter Mariani Primiani

2014-07-06T23:59:59.000Z

78

Turbine component cooling channel mesh with intersection chambers  

DOE Patents (OSTI)

A mesh (35) of cooling channels (35A, 35B) with an array of cooling channel intersections (42) in a wall (21, 22) of a turbine component. A mixing chamber (42A-C) at each intersection is wider (W1, W2)) than a width (W) of each of the cooling channels connected to the mixing chamber. The mixing chamber promotes swirl, and slows the coolant for more efficient and uniform cooling. A series of cooling meshes (M1, M2) may be separated by mixing manifolds (44), which may have film cooling holes (46) and/or coolant refresher holes (48).

Lee, Ching-Pang; Marra, John J

2014-05-06T23:59:59.000Z

79

QN_CloudChamberV1.4  

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

How to Build a Cosmic-Ray Cloud Chamber How to Build a Cosmic-Ray Cloud Chamber October 2008, Version 1.4 * QuarkNet version. Fermi National Accelerator Laboratory. * Instructions written by Jeremy Paschke, York High School and Anne Mary Teichert, Fermilab. * Model initially designed and built by Robert Peterson, Fermilab. If you have further questions, or improvements of your own you would like to share with the QuarkNet group, please contact: Jeremy Paschke, York High School Physics Instructor (jpaschke@elmhurst205.org), or Bob Peterson, Fermilab Education Specialist, (rspete@fnal.gov). Justification: Showing your class a working cloud chamber is one of the best ways to generate student interest in modern physics. The cloud chamber described below will display natural background radiation (muons generated by

80

Mini-chamber, an advanced protection concept for NIF  

SciTech Connect

Inertial confinement fusion (ICF) target debris and ablated near-target materials pose the primary threat to the National Ignition Facility (NIF) final optics debris shields, as well as a major challenge in future inertial fusion energy (IFE) power plants. This work discusses a NIF `mini-chamber,` designed to mitigate the debris threat. Although the NIF base-line design protects against debris using a frost-protected target positioner and refractory first-wall coatings, the mini-chamber provides important flexibility in three areas: debris-shield protection from beyond-design basis shots (i.e. heavy hohlraums, special diagnostics, shields); fielding of large experiments with significant surface ablation; and studying key ablation and gas-dynamics issues for liquid-wall IFE power plants. Key mini-chamber modeling results are presented, followed by discussion of equipment requirements for fielding a NIF mini-chamber. 7 refs., 3 figs.

Peterson, P.F.; Scott, J.M. [Univ. of California, Berkeley, CA (United States)

1996-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Velocity of the electric arc in a plasmatron discharge chamber  

Science Journals Connector (OSTI)

An experimental investigation of the velocity of a high-current arc with air injection in the discharge chamber of a coaxial sectioned plasmatron is described. The experiments showed that the velocity of the c...

A. S. Shaboltas

1969-09-01T23:59:59.000Z

82

Carrying Semiautomatic Pistols with a Round in the Chamber  

Directives, Delegations, and Requirements

Sets forth requirements for a DOE security police officer who must carry a round in the chamber of a semiautomatic pistol while on duty. Does not cancel other directives.

1999-10-28T23:59:59.000Z

83

E-Cloud Build-up in Grooved Chambers  

E-Print Network (OSTI)

and F. Zimmermann, LC e-Cloud Activities at CERN, talkal. , Simulations of the Electron Cloud for Vari- ous Con?E-CLOUD BUILD-UP IN GROOVED CHAMBERS ? M. Venturini LBNL,

Venturini, Marco

2007-01-01T23:59:59.000Z

84

DIMUON PRODUCTION BY HIGH ENERGY NEUTRINOS AND ANTINEUTRINOS IN THE FERMILAB FIFTEEN-FOOT BUBBLE CHAMBER  

E-Print Network (OSTI)

ANTINEUTRINOS IN THE FERMILAB FIFTEEN-FOOT BUBBLE CHAMBERANTINEUTRINOS IN THE FERMILAB FIFTEEN-FOOT BUBBLE CHAMBER*ANTINEUTRINOS IN THE FERMILAB FIFTEEN-FOOT BUBBLE CHAMBER

Orthel, John L.

2010-01-01T23:59:59.000Z

85

E-Print Network 3.0 - atmospheric exposure chambers Sample Search...  

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

Topic List Advanced Search Sample search results for: atmospheric exposure chambers Page: << < 1 2 3 4 5 > >> 1 Dynamic Chamber System to Measure Gaseous Compounds Emissions...

86

Laser calibration system for the CERES Time Projection Chamber  

E-Print Network (OSTI)

A Nd:YAG laser was used to simulate charged particle tracks at known positions in the CERES Time Projection Chamber at the CERN SPS. The system was primarily developed to study the response of the readout electronics and to calibrate the electron drift velocity. Further applications were the determination of the gating grid transparency, the chamber position calibration, and long-term monitoring of drift properties of the gas in the detector.

Dariusz Miskowiec; Peter Braun-Munzinger

2008-02-15T23:59:59.000Z

87

Transverse wakefields due to asymmetric protrusions into a vacuum chamber  

Science Journals Connector (OSTI)

Abstract We analyze the effect of a wakefield caused by an asymmetric protrusion inside the accelerator vacuum chamber. The asymmetry leads to a transverse kick on the beam and an increase of the projected transverse beam emittance. Calculations are done for a model rectangular protrusion in a vacuum chamber of rectangular cross-section. Based on our analysis, numerical estimates are given for the SuperKEKB accelerator in KEK, Japan, and TLEP-W proposal at CERN.

Gennady Stupakov; Demin Zhou

2014-01-01T23:59:59.000Z

88

Characteristics of the upper crust and magma chambers along the spreading centers of the Lau back-arc basin  

E-Print Network (OSTI)

G. , Detrick, R.S. , Sinton, J. , 2002. Crustal thicknessJ.P. , Detrick, R.S. , Sinton, J. , 2004. Constructing the3767-3787. Detrick, R.S. , Sinton, J.M. , Ito, G. , Canales,

Dingler, Allison Maria Jacobs

2007-01-01T23:59:59.000Z

89

Sealed vacuum canister and method for pick-up and containment of material  

DOE Patents (OSTI)

A vacuum canister is described including a housing with a sealed vacuum chamber having a predetermined vacuum pressure therein and a valve having a first port for fluid communication with the vacuum chamber and a second port for receiving at least one of a fluid and a particulate material. The valve is operable between a first position to seal the vacuum chamber and retain the predetermined vacuum within the vacuum chamber, and a second position to access the vacuum chamber to permit vacuum fluid flow through the valve from the second port into the vacuum chamber. The vacuum canister, in the operation to pick up material with the valve in the second position, when the second port is located adjacent at least one of a fluid and a particulate material, is effective to displace through the valve at least one of a fluid and a particulate material into the housing. The vacuum canister is desirably suitable for picking up and containing hazardous material such as radioactive material, in which the vacuum canister includes a protective layer of lead having a predetermined thickness that is effective to shield radiation emitted from the radioactive material contained within the housing. Advantageously, the vacuum canister includes a vacuum means for establishing a predetermined vacuum pressure within the vacuum chamber. 6 figs.

Stoutenburgh, R.R.

1996-02-13T23:59:59.000Z

90

LARGE ABUNDANCES OF POLYCYCLIC AROMATIC HYDROCARBONS IN TITAN'S UPPER ATMOSPHERE  

SciTech Connect

In this paper, we analyze the strong unidentified emission near 3.28 {mu}m in Titan's upper daytime atmosphere recently discovered by Dinelli et al. We have studied it by using the NASA Ames PAH IR Spectroscopic Database. The polycyclic aromatic hydrocarbons (PAHs), after absorbing UV solar radiation, are able to emit strongly near 3.3 {mu}m. By using current models for the redistribution of the absorbed UV energy, we have explained the observed spectral feature and have derived the vertical distribution of PAH abundances in Titan's upper atmosphere. PAHs have been found to be present in large concentrations, about (2-3) Multiplication-Sign 10{sup 4} particles cm{sup -3}. The identified PAHs have 9-96 carbons, with a concentration-weighted average of 34 carbons. The mean mass is {approx}430 u; the mean area is about 0.53 nm{sup 2}; they are formed by 10-11 rings on average, and about one-third of them contain nitrogen atoms. Recently, benzene together with light aromatic species as well as small concentrations of heavy positive and negative ions have been detected in Titan's upper atmosphere. We suggest that the large concentrations of PAHs found here are the neutral counterpart of those positive and negative ions, which hence supports the theory that the origin of Titan main haze layer is located in the upper atmosphere.

Lopez-Puertas, M.; Funke, B.; Garcia-Comas, M. [Instituto de Astrofisica de Andalucia (CSIC), E-18080 Granada (Spain); Dinelli, B. M. [ISAC-CNR, I-40129 Bologna (Italy); Adriani, A.; D'Aversa, E. [IAPS-INAF, I-00133 Rome (Italy); Moriconi, M. L. [ISAC-CNR, I-00133 Rome (Italy); Boersma, C.; Allamandola, L. J., E-mail: puertas@iaa.es [NASA Ames Research Center, Moffett Field, CA 94035-1000 (United States)

2013-06-20T23:59:59.000Z

91

Methane-derived hydrocarbons produced under upper-mantle conditions  

SciTech Connect

There is widespread evidence that petroleum originates from biological processes. Whether hydrocarbons can also be produced from abiogenic precursor molecules under the high-pressure, high-temperature conditions characteristic of the upper mantle remains an open question. It has been proposed that hydrocarbons generated in the upper mantle could be transported through deep faults to shallower regions in the Earth's crust, and contribute to petroleum reserves. Here we use in situ Raman spectroscopy in laser-heated diamond anvil cells to monitor the chemical reactivity of methane and ethane under upper-mantle conditions. We show that when methane is exposed to pressures higher than 2 GPa, and to temperatures in the range of 1,000-1,500 K, it partially reacts to form saturated hydrocarbons containing 2-4 carbons (ethane, propane and butane) and molecular hydrogen and graphite. Conversely, exposure of ethane to similar conditions results in the production of methane, suggesting that the synthesis of saturated hydrocarbons is reversible. Our results support the suggestion that hydrocarbons heavier than methane can be produced by abiogenic processes in the upper mantle.

Kolesnikov, Anton; Kutcherov, Vladimir G.; Goncharov, Alexander F.; (CIW); (RITS)

2009-08-13T23:59:59.000Z

92

Reanalysis of bubble chamber measurements of muon-neutrino induced single pion production  

E-Print Network (OSTI)

There exists a longstanding disagreement between bubble chamber measurements of the single pion production channel $\

Callum Wilkinson; Philip Rodrigues; Susan Cartwright; Lee Thompson; Kevin McFarland

2014-11-17T23:59:59.000Z

93

Reanalysis of bubble chamber measurements of muon-neutrino induced single pion production  

E-Print Network (OSTI)

There exists a longstanding disagreement between bubble chamber measurements of the single pion production channel $\

Wilkinson, Callum; Cartwright, Susan; Thompson, Lee; McFarland, Kevin

2014-01-01T23:59:59.000Z

94

Initial Back-to-Back Fission Chamber Testing in ATRC  

SciTech Connect

Development and testing of in-pile, real-time neutron sensors for use in Materials Test Reactor experiments is an ongoing project at Idaho National Laboratory. The Advanced Test Reactor National Scientific User Facility has sponsored a series of projects to evaluate neutron detector options in the Advanced Test Reactor Critical Facility (ATRC). Special hardware was designed and fabricated to enable testing of the detectors in the ATRC. Initial testing of Self-Powered Neutron Detectors and miniature fission chambers produced promising results. Follow-on testing required more experiment hardware to be developed. The follow-on testing used a Back-to-Back fission chamber with the intent to provide calibration data, and a means of measuring spectral indices. As indicated within this document, this is the first time in decades that BTB fission chambers have been used in INL facilities. Results from these fission chamber measurements provide a baseline reference for future measurements with Back-to-Back fission chambers.

Benjamin Chase; Troy Unruh; Joy Rempe

2014-06-01T23:59:59.000Z

95

Vegetable Gardening in Containers  

E-Print Network (OSTI)

This 7 page publications explains how to grow vegetables in containers when insufficient space or unsutable soil conditions make a traditional garden difficult to achieve. Topics include: container materials, crop selection, growing media, seeding...

Masabni, Joseph; Cotner, Sam

2009-02-25T23:59:59.000Z

96

Accident resistant transport container  

DOE Patents (OSTI)

The invention relates to a container for the safe air transport of plutonium having several intermediate wood layers and a load spreader intermediate an inner container and an outer shell for mitigation of shock during a hypothetical accident.

Andersen, John A. (Albuquerque, NM); Cole, James K. (Albuquerque, NM)

1980-01-01T23:59:59.000Z

97

Federation of Indian Chambers of Commerce & Industry (FICCI) | Department  

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

Federation of Indian Chambers of Commerce & Industry (FICCI) Federation of Indian Chambers of Commerce & Industry (FICCI) Federation of Indian Chambers of Commerce & Industry (FICCI) March 20, 2007 - 11:37am Addthis Thank you Geoff (Pyatt) for that introduction. I'd like to thank FICCI for hosting this event and thank its leadership for their kind words. I'm very pleased to be here in India - and to be with all of you today. Since his very first days in office, President Bush has considered growing and strengthening the United States' bilateral relationship with India to be a top priority. The shared commitment of President Bush and Prime Minister Singh to building our relationship was evidenced by the historic strategic partnership initiatives announced during the President's visit here in March of last year.

98

Challenge Met as APS Sends Final Chambers to LCLS  

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

A Marriage of Hardware and Hard Work A Marriage of Hardware and Hard Work Shaken but Not Stirred 2008 Rosalind Franklin Young Investigator Award The 2008 3-Way Meeting In R&D, Super X-rays Mark Many Spots APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Challenge Met as APS Sends Final Chambers to LCLS MAY 21, 2008 Bookmark and Share The final five (of 40) extruded aluminum vacuum chambers for the Linac Coherent Light Source (LCLS) undulator system have been shipped from Argonne National Laboratory - where the chambers were designed and assembled - to the Stanford Linear Accelerator Center, where the LCLS "will be the world's first x-ray free electron laser when it becomes operational in 2009. Pulses of x-ray laser light from LCLS will be many

99

Single-molecule mobility in confined and crowded femtoliter chambers  

SciTech Connect

The effects of increased crowding and confinement on the mobility of individual fluorescent molecules were studied using Fluorescence Correlation Spectroscopy (FCS) in a microfluidic device with sealable femtoliter-volume chambers, and compared to three dimensional stochastic Monte Carlo simulations. When crowding and the degree of confinement were increased simultaneously, extended correlation times of fluorescent intensity fluctuations were observed with FCS compared to varying either crowding or confinement alone. Both experimental data and simulation suggest these extended correlation times were due to increased fluorophore adsorption-desorption events at the chamber lid in the presence of crowders. The data in increasingly confined and crowded chambers described here captures some of the salient features of crowding in cell-like environments.

Collier, Pat [ORNL; Fowlkes, Jason Davidson [ORNL

2013-01-01T23:59:59.000Z

100

Ionisation Chambers for the LHC Beam Loss Detection  

E-Print Network (OSTI)

At the Large Hadron Collider (LHC) a beam loss system will be used to prevent and protect superconducting magnets against coil quenches and coil damages. Since the stored particle beam intensity is 8 orders of magnitude larger than the lowest quench level value particular attention is paid to the design of the secondary particle shower detectors. The foreseen ionisation chambers are optimised in geometry simulating the probable loss distribution along the magnets and convoluting the loss distribution with the secondary particle shower distributions. To reach the appropriate coverage of a particle loss and to determine the quench levels with a relative accuracy of 2 the number of the detectors and their lengths is weighted against the particle intensity density variation. In addition attention is paid to the electrical ionisation chamber signal to minimise the ion tail extension. This optimisation is based on time resolved test measurements in the PS booster. A proposal for a new ionisation chamber will be pre...

Gschwendtner, E; Dehning, B; Ferioli, G; Kain, V

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Fluid transport container  

DOE Patents (OSTI)

An improved fluid container for the transport, collection, and dispensing of a sample fluid that maintains the fluid integrity relative to the conditions of the location at which it is taken. More specifically, the invention is a fluid sample transport container that utilizes a fitting for both penetrating and sealing a storage container under controlled conditions. Additionally, the invention allows for the periodic withdrawal of portions of the sample fluid without contamination or intermixing from the environment surrounding the sample container. 13 figs.

DeRoos, B.G.; Downing, J.P. Jr.; Neal, M.P.

1995-11-14T23:59:59.000Z

102

Chamber transport of ''foot'' pulses for heavy-ion fusion  

SciTech Connect

Indirect-drive targets for heavy-ion fusion must initially be heated by ''foot'' pulses that precede the main heating pulses by tens of nanoseconds. These pulses typically have a lower energy and perveance than the main pulses, and the fusion-chamber environment is different from that seen by later pulses. The preliminary particle-in-cell simulations of foot pulses here examine the sensitivity of the beam focusing to ion-beam perveance, background-gas density, and pre-neutralization by a plasma near the chamber entry port.

Sharp, W.M.; Callahan-Miller, D.A.; Tabak, M.; Yu, S.S.; Peterson, P.F.

2002-02-20T23:59:59.000Z

103

Dissipative expansion chambers with two concentric layers of fibrous material  

Science Journals Connector (OSTI)

The acoustic performance of a dissipative expansion chamber lined with two concentric, annular layers of fibrous material with different resistances is investigated. A two-dimensional analytical approach is used to determine the transmission loss of this dissipative silencer. From the boundary conditions at the rigid wall, and the interfaces between the fibre layers and the central airway, the characteristic function and thus eigenvalues and eigenfunctions for sound propagation in the dissipative chamber are obtained, leading to transmission loss through application of pressure and velocity matching. The effects of geometry and fibre properties on the acoustic attenuation are also discussed.

A. Selamet; M.B. Xu; I.J. Lee; N.T. Huff

2005-01-01T23:59:59.000Z

104

Empirical validation of the conceptual design of the LLNL 60-kg contained-firing facility  

SciTech Connect

In anticipation of increasingly stringent environmental regulations, Lawrence Livermore National Laboratory (LLNL) is proposing to modify an existing facility to add a 60-kg firing chamber and related support areas. This modification will provide blast-effects containment for most of its open-air, high-explosive, firing operations. Even though these operations are within current environmental limits, containment of the blast effects and hazardous debris will further drastically reduce emissions to the environment and minimize the hazardous waste generated. The major design consideration of such a chamber is its overall structural dynamic response in terms of its long-term ability to contain all blast effects from repeated internal detonations of high explosives. Another concern is how much other portions of the facility outside the firing chamber must be hardened to ensure personnel protection in the event of an accidental detonation while the chamber door is open. To assess these concerns, a 1/4-scale replica model of the planned contained firing chamber was engineered, constructed, and tested with scaled explosive charges ranging from 25 to 125% of the operational explosives limit of 60 kg. From 16 detonations of high explosives, 880 resulting strains, blast pressures, and temperatures within the model were measured to provide information for the final design.

Pastrnak, J.W.; Baker, C.F.; Simmons, L.F.

1995-02-24T23:59:59.000Z

105

Radar Measurement of the Upper Atmosphere  

Science Journals Connector (OSTI)

...of the Upper Atmosphere James C. G...two decades large radars have...of the upper atmosphere. These radars...ionospheric plasma, all as functions...ionospheric plasma by detection...is wasted. Atmospheric radar scientists...305 m and an area of 73,000...frequency of 430 MHz. The radar...

James C. G. Walker

1979-10-12T23:59:59.000Z

106

Upper White River Watershed Alliance Upper White River Watershed Alliance (UWRWA)  

E-Print Network (OSTI)

Upper White River Watershed Alliance Upper White River Watershed Alliance (UWRWA) P.O. Box 2065 integrity of the White River ecosystem. To successfully accomplish the vision of UWRWA, a 16-county was formed. It exists to improve and protect water quality on a watershed basis in the larger Upper White

107

HEBT MOMENTUM SCRAPER, H+ RAY TRACE SIMULATION AND VACUUM CHAMBER DESIGN.  

SciTech Connect

In the 1MW Spallation Neutron Source (SNS), the High-Energy Beam Transfer line (HEBT) connects the LINAC to the accumulator ring. A major requirement of the SNS complex is to have low uncontrolled beam loss (lnA/m), to allow hands on maintenance. The vacuum requirement for the HEBT is 5x10{sup {minus}8} Torr. Excessive H{sup {minus}} stripping will occur above this pressure and increase losses in the machine. The HEBT is also equipped with three sets of beam halo scrapers, one for momentum and two for transverse collimation. The momentum scraper is located at a maximum dispersion point, between the 3rd dipole magnet (DD3) of HEBT and the 14th quadrupole (Q14) of the HEBT line. The momentum scraper uses movable foils that strip the H{sup {minus}} beam that has momentum spread (0.2%<{delta}p/p<0.6%) into H{sup +}, and the H{sup +} ions are then directed out of the HEBT beam line to a beam dump by the next bending magnet DD4 (4th dipole of HEBT). In order to ensure that the extracted H{sup +} beam travels inside the extraction chamber to minimize the radiation in the beam dump station region, we performed H{sup +} particle tracking to determine the outer boundaries and the angle of the Y-type vacuum chamber that will contain the H{sup +} beam. The development and design of the special HEBT momentum scraper extraction and exit chamber, and the relevant H{sup +} trajectories are presented in this paper.

HE,P.; HSEUH,H.C.; RAPARIA,D.; TSOUPAS,N.; WEISS,D.

2001-06-18T23:59:59.000Z

108

www.ornl.gov Environmental Chambers at ORNL  

E-Print Network (OSTI)

-air HVAC system, heat pump water heaters, a dehumidifying water heater, solid-state lighting, hybrid solar-by-side chambers can test gas heat pumps, electric heat pumps and air conditioners, gas/electric packaged units, desiccant systems, and small distributed generation/combined heat and power (CHP) systems with capacities

Oak Ridge National Laboratory

109

Micromegas chambers for the ATLAS Muon Spectrometer Upgrade  

E-Print Network (OSTI)

Micromegas (Micro MEsh Gaseous Structure) chambers have been proven along the years to be reliable fast detectors with an excellent spatial resolution. The ATLAS collaboration at LHC has chosen the micromegas technology along with the small-strip Thin Gap Chambers (sTGC) for the high luminosity upgrade of the inner muon station in the high-rapidity region, the so called New Small Wheel (NSW). It employs eight layers of micromegas detectors and eight layers of sTGC. The NSW project requires fully efficient micromegas chambers with spatial resolution down to $100\\mu m$ over a total active area of $1200 m^2$ with a rate capability up to $10 kHz/cm^2$ and operation in a moderate magnetic field up to B=0.3 T. The required tracking capability is provided by the intrinsic space resolution combined with a mechanical precision at the level of $30 \\mu m$ along the precision coordinate. Moreover together with the precise tracking capability the micromegas chambers should provide a trigger signal. An extensive R&D pr...

Ntekas, Konstantinos; The ATLAS collaboration

2014-01-01T23:59:59.000Z

110

Hydrogen Production in a Single Chamber Microbial Electrolysis Cell  

E-Print Network (OSTI)

) at greater yields than fermentation and at greater energy efficiencies than water electrolysis. It has been to produce water. A microbial electrolysis cell (MEC) operates in a manner similar to an MFC exceptHydrogen Production in a Single Chamber Microbial Electrolysis Cell Lacking a Membrane D O U G L

111

Cost Containment and Productivity  

E-Print Network (OSTI)

Cost Containment and Productivity Faculty Assembly Presentation January 22, 2013 Arthur G. Ramicone, CFO David N. DeJong, Vice Provost, Academic Planning and Resources Management #12;Cost Containment Resources to Enhance the Student Experience · Reduce the Cost and Complexity of Administrative Operations

Jiang, Huiqiang

112

Upper Scioto Valley School | Open Energy Information  

Open Energy Info (EERE)

Valley School Valley School Jump to: navigation, search Name Upper Scioto Valley School Facility Upper Scioto Valley School Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Upper Scioto Valley Schools Energy Purchaser Upper Scioto Valley Schools Location McGuffey OH Coordinates 40.691542°, -83.786353° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.691542,"lon":-83.786353,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

113

Tensor rank : some lower and upper bounds  

E-Print Network (OSTI)

The results of Strassen [25] and Raz [19] show that good enough tensor rank lower bounds have implications for algebraic circuit/formula lower bounds. We explore tensor rank lower and upper bounds, focusing on explicit ...

Forbes, Michael Andrew

2011-01-01T23:59:59.000Z

114

Container for radioactive materials  

DOE Patents (OSTI)

A container is claimed for housing a plurality of canister assemblies containing radioactive material. The several canister assemblies are stacked in a longitudinally spaced relation within a carrier to form a payload concentrically mounted within the container. The payload package includes a spacer for each canister assembly, said spacer comprising a base member longitudinally spacing adjacent canister assemblies from each other and sleeve surrounding the associated canister assembly for centering the same and conducting heat from the radioactive material in a desired flow path. 7 figures.

Fields, S.R.

1984-05-30T23:59:59.000Z

115

Development and test of combustion chamber for Stirling engine heated by natural gas  

Science Journals Connector (OSTI)

The combustion chamber is an important component for the Stirling engine heated by natural gas. In the paper ... , we develop a combustion chamber for the Stirling engine which aims to generate 3?5 kWe...electric...

Tie Li; Xiange Song; Xiaohong Gui; Dawei Tang; Zhigang Li

2014-04-01T23:59:59.000Z

116

-The Bubble Chamber -http://thebubblechamber.org -Review: Cold War Social Science  

E-Print Network (OSTI)

[1] - The Bubble Chamber - http://thebubblechamber.org - Review: Cold War Social Science Posted assume that all developments in the social sciences during the Cold War period can be The Bubble Chamber

Solovey, Mark

117

Beam Loss Ion Chamber System Upgrade for Experimental Halls  

SciTech Connect

The Beam loss Ion Chamber System (BLICS) was developed to protect Jefferson Labs transport lines, targets and beam dumps from a catastrophic ''burn through''. Range changes and testing was accomplished manually requiring the experiment to be shut down. The new upgraded system is based around an ''off the shelf'' Programmable Logic Controller located in a single control box supporting up to ten individual detectors. All functions that formerly required an entry into the experimental hall and manual adjustment can be accomplished from the Machine Control Center (MCC). A further innovation was the addition of a High Voltage ''Brick'' at the detector location. A single cable supplies the required voltage for the Brick and a return line for the ion chamber signal. The read back screens display range, trip point, and accumulated dose for each location. The new system is very cost effective and significantly reduces the amount of lost experimental time.

D.W. Dotson; D.J. Seidman

2005-05-16T23:59:59.000Z

118

Development and characterization of a chamber gram estimator  

SciTech Connect

The Chamber Gram Estimator (CGE), Model SAM-1B is a small article gamma monitor originally designed to screen items for radioactive contamination that may be placed into its chamber. Four plastic scintillator detectors detect photons emitted from bulk quantities of fissile materials in line generated waste and provide a fissile mass content estimate of waste packages. With the present CGE, a few grams of {sup 239}Pu could be distinguished above background in light matrix samples. It is controlled by a personal computer that uses a menu driven operating program. The program is designed to reduce the potential for operator error while obtaining a fissile material gram estimate of a line generated waste package prior to placement in a drum. This report describes the work performed to characterize the counting chamber for fissile material estimation. The operating features of the CGE, the results and conclusions drawn from the experiments, and the future work recommended for the next generation CGEs are also described. The CGE provides advantages over hand-held Ludlum 12-12 survey-type instruments presently in use. The CGE is easy to operate, does not require manual manipulation to measure the total surf ace of the sample, and provides a display free of rate meter response-time effects or the need for visual averaging. Moreover, the response variations due to sample geometry are significantly less than with a hand-held arrangement, particularly, for the low density matrix samples appropriate for estimation. The waste packages are placed inside the instrument`s shielded chamber which effectively eliminates gamma exposure to operators from waste packages.

Dulco, G.B.; Gupta, V.P.; Balmer, D.K.

1995-07-01T23:59:59.000Z

119

Using sputter coated glass to stabilize microstrip gas chambers  

DOE Patents (OSTI)

By sputter coating a thin-layer of low-resistive, electronically-conductive glass on various substrates (including quartz and ceramics, thin-film Pestov glass), microstrip gas chambers (MSGC) of high gain stability, low leakage current, and a high rate capability can be fabricated. This design can make the choice of substrate less important, save the cost of ion-implantation, and use less glass material.

Gong, Wen G. (Albany, CA)

1997-01-01T23:59:59.000Z

120

Lightweight flywheel containment  

DOE Patents (OSTI)

A lightweight flywheel containment composed of a combination of layers of various material which absorb the energy of a flywheel structural failure. The various layers of material act as a vacuum barrier, momentum spreader, energy absorber, and reaction plate. The flywheel containment structure has been experimentally demonstrated to contain carbon fiber fragments with a velocity of 1,000 m/s and has an aerial density of less than 6.5 g/square centimeters. The flywheel containment, may for example, be composed of an inner high toughness structural layer, and energy absorbing layer, and an outer support layer. Optionally, a layer of impedance matching material may be utilized intermediate the flywheel rotor and the inner high toughness layer.

Smith, James R. (Livermore, CA)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

FREIGHT CONTAINER LIFTING STANDARD  

SciTech Connect

This standard details the correct methods of lifting and handling Series 1 freight containers following ISO-3874 and ISO-1496. The changes within RPP-40736 will allow better reading comprehension, as well as correcting editorial errors.

POWERS DJ; SCOTT MA; MACKEY TC

2010-01-13T23:59:59.000Z

122

CLOUD CHAMBER: A PERFORMANCE INVOLVING REAL TIME TWO-WAY INTERACTION BETWEEN SUBATOMIC RADIOACTIVE  

E-Print Network (OSTI)

will be placed in the chamber on stage, saturated with ethanol and cooled by liquid nitrogen, which makes

Miranda, Eduardo Reck

123

Container cover closure apparatus  

DOE Patents (OSTI)

The present invention relates generally to handling and/or storing hazardous waste materials, such as radioactive materials, and is more specifically directed to loading and/or unloading radioactive material into or out of a container, such as a drum, by remote operation, and more particularly the present invention relates to the remote opening and/or closing of a container secured by a compression ring.

Griesau, Richard A. (Scotia, NY)

2000-01-01T23:59:59.000Z

124

Cavity resonances in engine combustion chambers and some applications  

Science Journals Connector (OSTI)

Cavity resonances in engine cylinders are caused by combustion events such as the rapid rate of pressure rise that occurs during compression ignition in diesels or from knock in gasoline engines. These resonances generally occur at frequencies greater than 4 to 5 kHz where the engine structure is not an efficient acoustical radiator. However when they occur at lower frequencies such as in engines with a large bore or in indirect injection diesels they can be important in the noise generation process. They are also important for knock detection in gasoline engines. Current knock detection systems are tuned to the frequency band of the lowest cavity resonance in the combustion chamber. It is shown in the paper that higher order resonances can also be detected by a knock vibration sensor on the surface of the engine. Another use for the cavity resonances is to determine the bulk temperature of the gas in the combustion chamber as a function of crank angle. This technique is demonstrated in the paper for a heavy?duty two?stroke diesel. Also the results of several fundamental investigations of cavity resonances in engine combustion chambers are reported briefly. Good agreement is obtained between theoretical prediction of the resonant frequencies and experimental observation. The splitting of degenerate modes into two components is discussed.

Robert Hickling; Douglas A. Feldmaier; Francis H. K. Chen; Josette S. Morel

1983-01-01T23:59:59.000Z

125

LAYOUT AND SIZING OF ESF ALCOVES AND REFUGE CHAMBERS  

SciTech Connect

The purpose of this analysis is to establish size requirements and approximate locations of Exploratory Studies Facility (ESF) test and operations alcoves, including refuge chambers during construction of the Topopah Spring (TS) loop. Preliminary conceptual layouts for non-deferred test alcoves will be developed to examine construction feasibility based on current test plans and available equipment. The final location and configuration layout for alcoves will be developed when in-situ rock conditions can be visually determined. This will be after the TBM has excavated beyond the alcove location and the rock has been exposed. The analysis will examine the need for construction of walkways and electrical alcoves in the ramps and main drift. Niches that may be required to accommodate conveyor booster drives and alignments are not included in this analysis. The analysis will develop design criteria for refuge chambers to meet MSHA requirements and will examine the strategic location of refuge chambers based on their potential use in various ESF fire scenarios. This document supersedes DI:BABE00000-01717-0200-00003 Rev 01, ''TS North Ramp Alcove and Stubout Location Analysis'' in its entirety (Reference 5-6).

John Beesley and Romeo S. Jurani

1995-08-25T23:59:59.000Z

126

ON COMPUTING UPPER LIMITS TO SOURCE INTENSITIES  

SciTech Connect

A common problem in astrophysics is determining how bright a source could be and still not be detected in an observation. Despite the simplicity with which the problem can be stated, the solution involves complicated statistical issues that require careful analysis. In contrast to the more familiar confidence bound, this concept has never been formally analyzed, leading to a great variety of often ad hoc solutions. Here we formulate and describe the problem in a self-consistent manner. Detection significance is usually defined by the acceptable proportion of false positives (background fluctuations that are claimed as detections, or Type I error), and we invoke the complementary concept of false negatives (real sources that go undetected, or Type II error), based on the statistical power of a test, to compute an upper limit to the detectable source intensity. To determine the minimum intensity that a source must have for it to be detected, we first define a detection threshold and then compute the probabilities of detecting sources of various intensities at the given threshold. The intensity that corresponds to the specified Type II error probability defines that minimum intensity and is identified as the upper limit. Thus, an upper limit is a characteristic of the detection procedure rather than the strength of any particular source. It should not be confused with confidence intervals or other estimates of source intensity. This is particularly important given the large number of catalogs that are being generated from increasingly sensitive surveys. We discuss, with examples, the differences between these upper limits and confidence bounds. Both measures are useful quantities that should be reported in order to extract the most science from catalogs, though they answer different statistical questions: an upper bound describes an inference range on the source intensity, while an upper limit calibrates the detection process. We provide a recipe for computing upper limits that applies to all detection algorithms.

Kashyap, Vinay L.; Siemiginowska, Aneta [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Van Dyk, David A.; Xu Jin [Department of Statistics, University of California, Irvine, CA 92697-1250 (United States); Connors, Alanna [Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017 (United States); Freeman, Peter E. [Department of Statistics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213 (United States); Zezas, Andreas, E-mail: vkashyap@cfa.harvard.ed, E-mail: asiemiginowska@cfa.harvard.ed, E-mail: dvd@ics.uci.ed, E-mail: jinx@ics.uci.ed, E-mail: aconnors@eurekabayes.co, E-mail: pfreeman@cmu.ed, E-mail: azezas@cfa.harvard.ed [Physics Department, University of Crete, P.O. Box 2208, GR-710 03, Heraklion, Crete (Greece)

2010-08-10T23:59:59.000Z

127

Light-scattering properties of plate and column ice crystals generated in a laboratory cold chamber  

E-Print Network (OSTI)

with a diode laser beam. This cloud chamber produces distinct plate and hollow column ice crystal types. The cloud chamber developed at the Desert Re- search Institute has been used to produce ice clouds composedLight-scattering properties of plate and column ice crystals generated in a laboratory cold chamber

Liou, K. N.

128

Effective Henry's Law Partitioning and the Salting Constant of Glyoxal in Aerosols Containing Sulfate  

E-Print Network (OSTI)

-resolved measurements of gas-phase and particle-phase concentrations in sulfate- containing aerosols. Two complementary utilizing filter sampling of chamber aerosols followed by HPLC-MS/MS analysis and (2) positive matrix and irreversible condensed-phase reactions of these compounds yield products of lower volatility; e.g. acetal

129

Intermittent contact of fluidized anode particles containing exoelectrogenic biofilms for continuous power generation in microbial  

E-Print Network (OSTI)

Intermittent contact of fluidized anode particles containing exoelectrogenic biofilms on granular activated carbon (GAC) particles. Particles were fluidized in the anode chamber for electricity was sustained by inter- mittent contact of charged particles with the anode. Higher power was obtained by flu

130

Airtight container for the transfer of atmosphere-sensitive materials into vacuum-operated characterization instruments  

SciTech Connect

This paper describes the design and operation of a simple airtight container devised to facilitate the transfer of atmosphere-sensitive samples from a glovebox to the vacuum chamber of an analytical instrument such as a scanning electron microscope. The use of this device for characterizing the microstructure of highly hygroscopic strontium iodide ceramics by scanning electron microscopy is illustrated as an application example.

Gaume, Romain M. [CREOL, the College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816-2700 (United States); Joubert, Lydia-Marie [Cell Sciences Imaging Facility, Beckman Center, Stanford University, Stanford, California 94305 (United States)

2011-12-15T23:59:59.000Z

131

Los Alamos honored by Española Valley Chamber of Commerce  

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

LANL Honored By Española Valley Chamber of Commerce LANL Honored By Española Valley Chamber of Commerce Community Connections: Our link to Northern New Mexico Communities Latest Issue:Dec. 2013 - Jan. 2014 All Issues » submit Los Alamos honored by Española Valley Chamber of Commerce The Espanola Valley Chamber of Commerce recognized the Lab for its support to the chamber and the entire Espanola Valley with a President's Choice Award. February 1, 2013 dummy image Read our archives. Contacts Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email The Lab received the award for efforts in a variety of areas. In late January, the Espanola Valley Chamber of Commerce recognized the Lab for its support to the chamber and the entire Espanola Valley with a President's Choice Award. Kurt Steinhaus with the Lab's Community

132

Crash resistant container  

DOE Patents (OSTI)

A container for hazardous materials capable of protecting the enclosed materials from high speed impact. Energy absorption is provided by a multiplicity of crushable layers of either wire mesh or perforated metal sheets which thin and flow together under impact loading. Layers of a higher tensile strength material are interspersed within the crushable layers to confine them and increase performance.

Pierce, Jim D. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

133

Performance parameters of a liquid filled ionization chamber array  

SciTech Connect

Purpose: In this work, the properties of the two-dimensional liquid filled ionization chamber array Octavius 1000SRS (PTW-Freiburg, Germany) for use in clinical photon-beam dosimetry are investigated.Methods: Measurements were carried out at an Elekta Synergy and Siemens Primus accelerator. For measurements of stability, linearity, and saturation effects of the 1000SRS array a Semiflex 31013 ionization chamber (PTW-Freiburg, Germany) was used as a reference. The effective point of measurement was determined by TPR measurements of the array in comparison with a Roos chamber (type 31004, PTW-Freiburg, Germany). The response of the array with varying field size and depth of measurement was evaluated using a Semiflex 31010 ionization chamber as a reference. Output factor measurements were carried out with a Semiflex 31010 ionization chamber, a diode (type 60012, PTW-Freiburg, Germany), and the detector array under investigation. The dose response function for a single detector of the array was determined by measuring 1 cm wide slit-beam dose profiles and comparing them against diode-measured profiles. Theoretical aspects of the low pass properties and of the sampling frequency of the detector array were evaluated. Dose profiles measured with the array and the diode detector were compared, and an intensity modulated radiation therapy (IMRT) field was verified using the Gamma-Index method and the visualization of line dose profiles.Results: The array showed a short and long term stability better than 0.1% and 0.2%, respectively. Fluctuations in linearity were found to be within 0.2% for the vendor specified dose range. Saturation effects were found to be similar to those reported in other studies for liquid-filled ionization chambers. The detector's relative response varied with field size and depth of measurement, showing a small energy dependence accounting for maximum signal deviations of 2.6% from the reference condition for the setup used. The ?-values of the Gaussian dose response function for a single detector of the array were found to be (0.72 0.25) mm at 6 MV and (0.74 0.25) mm at 15 MV and the corresponding low pass cutoff frequencies are 0.22 and 0.21 mm{sup ?1}, respectively. For the inner 5 5 cm{sup 2} region and the outer 11 11 cm{sup 2} region of the array the Nyquist theorem is fulfilled for maximum sampling frequencies of 0.2 and 0.1 mm{sup ?1}, respectively. An IMRT field verification with a Gamma-Index analysis yielded a passing rate of 95.2% for a 3 mm/3% criterion with a TPS calculation as reference.Conclusions: This study shows the applicability of the Octavius 1000SRS in modern dosimetry. Output factor and dose profile measurements illustrated the applicability of the array in small field and stereotactic dosimetry. The high spatial resolution ensures adequate measurements of dose profiles in regular and intensity modulated photon-beam fields.

Poppe, B.; Stelljes, T. S.; Looe, H. K.; Chofor, N. [Clinic for Radiation Therapy, Pius-Hospital, Oldenburg 26121, Germany and WG Medical Radiation Physics, Carl von Ossietzky University, Oldenburg 26121 (Germany)] [Clinic for Radiation Therapy, Pius-Hospital, Oldenburg 26121, Germany and WG Medical Radiation Physics, Carl von Ossietzky University, Oldenburg 26121 (Germany); Harder, D. [Prof. em., Medical Physics and Biophysics, Georg August University, Gttingen 37073 (Germany)] [Prof. em., Medical Physics and Biophysics, Georg August University, Gttingen 37073 (Germany); Willborn, K. [Clinic for Radiation Therapy, Pius-Hospital, Oldenburg 26121 (Germany)] [Clinic for Radiation Therapy, Pius-Hospital, Oldenburg 26121 (Germany)

2013-08-15T23:59:59.000Z

134

Statistics of the electromagnetic response of a chaotic reverberation chamber  

E-Print Network (OSTI)

This article presents a study of the electromagnetic response of a chaotic reverberation chamber (RC) in the presence of losses. By means of simulations and of experiments, the fluctuations in the maxima of the field obtained in a conventional mode-stirred RC are compared with those in a chaotic RC in the neighborhood of the Lowest Useable Frequency (LUF). The present work illustrates that the universal spectral and spatial statistical properties of chaotic RCs allow to meet more adequately the criteria required by the Standard IEC 61000-4-21 to perform tests of electromagnetic compatibility.

J. -B. Gros; U. Kuhl; O. Legrand; F. Mortessagne; O. Picon; E. Richalot

2014-09-20T23:59:59.000Z

135

Upper San Juan Basin Biological Assessment  

E-Print Network (OSTI)

the biological assessment. The Colorado Natural Heritage Program began its research by updating its BiologicalUpper San Juan Basin Biological Assessment Colorado State University 8002 Campus Delivery Fort Collins, CO 80523-8002 June 2003 Colorado Natural Heritage Program #12;Southwest Land Alliance Pagosa

136

Melt containment member  

DOE Patents (OSTI)

A tubular melt containment member for transient containment of molten metals and alloys, especially reactive metals and alloys, includes a melt-contacting layer or region that comprises an oxygen-deficient rare earth oxide material that is less reactive as compared to the counterpart stoichiometric rare earth oxide. The oxygen-deficient (sub-stoichiometric) rare earth oxide can comprise oxygen-deficient yttria represented by Y.sub.2O.sub.3-x wherein x is from 0.01 to 0.1. Use of the oxygen-deficient rare earth oxide as the melt-contacting layer or region material reduces reaction with the melt for a given melt temperature and melt contact time.

Rieken, Joel R.; Heidloff, Andrew J.

2014-09-09T23:59:59.000Z

137

Concrete containment aging study  

SciTech Connect

In 1989, IAEA initiated a pilot study on the management of aging of nuclear power plant components. The Phase I and II studies of concrete containment are discussed. With the data base, plant owners will be able to review and enhance their existing programs. IAEA will analyze data provided by participating plants and the report is scheduled to be released by late 1994 (final report release mid-1995).

Pachner, J. [International Atomic Energy Agency, Vienna (Austria); Tai, T.M. [Bechtel National, Inc., Oak Ridge, TN (United States); Naus, D. [Oak Ridge National Lab., TN (United States)

1994-04-01T23:59:59.000Z

138

Vegetable Gardening in Containers.  

E-Print Network (OSTI)

are indicated in Table 1. * Growing Media Synthetic "soils" are best suited for vegetable container gardening. These mixes may be composed of sawdust, wood chips, peat moss, perlite, ver miculite or almost any other type of media. Regardless of what... "soils" are available from gar den centers, or one can be pre pared by mixing horticultu ral grade vermiculite, peat moss, limestone, superphosphate, and garden fertilizer. To 1 bushel each of vermiculite and peat moss, add 10 tablespoons...

Cotner, Sam

1981-01-01T23:59:59.000Z

139

Beam quality conversion factors for parallel-plate ionization chambers in MV photon beams  

SciTech Connect

Purpose: To investigate the behavior of plane-parallel ion chambers in high-energy photon beams through measurements and Monte Carlo simulations. Methods: Ten plane-parallel ion chamber types were obtained from the major ion chamber manufacturers. Absorbed dose-to-water calibration coefficients are measured for these chambers and k{sub Q} factors are determined. In the process, the behaviors of the chambers are characterized through measurements of leakage currents, chamber settling in cobalt-60, polarity and ion recombination behavior, and long-term stability. Monte Carlo calculations of the absorbed dose to the air in the ion chamber and absorbed dose to water are obtained to calculate k{sub Q} factors. Systematic uncertainties in Monte Carlo calculated k{sub Q} factors are investigated by varying material properties and chamber dimensions. Results: Chamber behavior was variable in MV photon beams, especially with regard to chamber leakage and ion recombination. The plane-parallel chambers did not perform as well as cylindrical chambers. Significant differences up to 1.5% were observed in calibration coefficients after a period of eight months although k{sub Q} factors were consistent on average within 0.17%. Chamber-to-chamber variations in k{sub Q} factors for chambers of the same type were at the 0.2% level. Systematic uncertainties in Monte Carlo calculated k{sub Q} factors ranged between 0.34% and 0.50% depending on the chamber type. Average percent differences between measured and calculated k{sub Q} factors were - 0.02%, 0.18%, and - 0.16% for 6, 10, and 25 MV beams, respectively. Conclusions: Excellent agreement is observed on average at the 0.2% level between measured and Monte Carlo calculated k{sub Q} factors. Measurements indicate that the behavior of these chambers is not adequate for their use for reference dosimetry of high-energy photon beams without a more extensive QA program than currently used for cylindrical reference-class ion chambers.

Muir, B. R.; McEwen, M. R.; Rogers, D. W. O. [Carleton Laboratory for Radiotherapy Physics, Physics Department, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada); Institute for National Measurement Standards, National Research Council of Canada, Ottawa, Ontario K1A 0R6 (Canada); Carleton Laboratory for Radiotherapy Physics, Physics Department, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada)

2012-03-15T23:59:59.000Z

140

Slag monitoring system for combustion chambers of steam boilers  

SciTech Connect

The computer-based boiler performance system presented in this article has been developed to provide a direct and quantitative assessment of furnace and convective surface cleanliness. Temperature, pressure, and flow measurements and gas analysis data are used to perform heat transfer analysis in the boiler furnace and evaporator. Power boiler efficiency is calculated using an indirect method. The on-line calculation of the exit flue gas temperature in a combustion chamber allows for an on-line heat flow rate determination, which is transferred to the boiler evaporator. Based on the energy balance for the boiler evaporator, the superheated steam mass flow rate is calculated taking into the account water flow rate in attemperators. Comparing the calculated and the measured superheated steam mass flow rate, the effectiveness of the combustion chamber water walls is determined in an on-line mode. Soot-blower sequencing can be optimized based on actual cleaning requirements rather than on fixed time cycles contributing to lowering of the medium usage in soot blowers and increasing of the water-wall lifetime.

Taler, J.; Taler, D. [Cracow University of Technology, Krakow (Poland)

2009-07-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
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141

Heat transfer and pollutant formation mechanisms in insulated combustion chambers  

SciTech Connect

The authors have studied the quenching situation as it can be found in constant volume combustion chambers for a methane flame over a range of wall temperatures between 300 K and 600 K using Direct Numerical Simulation. To do this, the authors solved the fully compressible, one-dimensional Navier-Stokes equations with detailed mechanisms for kinetics and diffusion. This approach allows to compare various reaction schemes, to identify the most important species and reaction paths, and to investigate the influence of different modeling assumptions. The computational results show that the dimensional wall heat flux increases with wall temperature over the whole range of wall temperatures studied; this agrees well with the most recent measurements in a strongly improved experimental setup. It is found that the wall can be modeled as chemically inert and thermal diffusion processes are negligible for low wall temperatures between 300 K and 400 K. However, at higher temperatures, due to a dramatically increasing radical concentration (H, Oh, OH) at the wall, both become increasingly important leading to large heat release rates directly at the metallic wall surface of the combustion chamber, and can thus not be neglected in the modeling of the quenching process. Furthermore, these high radical concentrations adjacent to the wall indicate that the uncertainties in wall heat flux measurements at high wall temperatures could be underestimated by the experimentalists. The UHC concentration at a wall temperature of 600 K is about 20 times smaller than for 300 K after quenching. 37 refs., 12 figs., 1 tab.

Popp, P.; Baum, M.

1995-12-31T23:59:59.000Z

142

Development of linseed oil-free bakelite resistive plate chambers  

E-Print Network (OSTI)

In this paper we would like to present a few characteristics of the Resistive Plate Chambers (RPC) made of a particular grade of bakelite paper laminates (P-120, NEMA LI-1989 Grade XXX), produced and commercially available in India. This particular grade is used for high voltage insulation in humid conditions. The chambers are tested with cosmic rays in the streamer mode using argon, tetrafluroethane and isobutane in 34:59:7 mixing ratio. In the first set of detectors made with such grade, a thin coating of silicone fluid on the inner surfaces of the bakelite was found to be necessary for operation of the detector. Those silicone coated RPCs were found to give satisfactory performance with stable efficiency of >90% continuously for a long period as reported earlier. Results of the crosstalk measurement of these silicone coated RPC will be presented in this paper. Very recently RPCs made with the same grade of bakelite but having better surface finish, are found to give equivalent performance even without any ...

Biswas, S; Bose, S; Chattopadhyay, S; Saha, S; Viyogi, Y P

2009-01-01T23:59:59.000Z

143

3.0 GROWTH FACILITY SPACE REQUESTS Prospective users of the greenhouses or growth chambers are encouraged to  

E-Print Network (OSTI)

for greenhouse and growth chamber specifications, including space, lighting and fees. Greenhouse and Growth Chamber Space Inventory Greenhouse and Growth Chamber Lighting Inventory #12;Hourly Rate Service Charges3.0 GROWTH FACILITY SPACE REQUESTS Prospective users of the greenhouses or growth chambers

Pawlowski, Wojtek

144

Development of a multistep parallel-plate chamber as time projection chamber end-cap or vertex detector  

SciTech Connect

In the course of development of the multistep avalanche chamber the authors have realized several multiple electrode parallel-plate devices exhibiting stable gains well in excess of 10/sup 5/ which are thus capable of detecting minimum ionizing particles. This paper presents the design and discusses the performance of a two-step parallel-plate avalanche chamber. A region of moderate electric field --the drift region where charges are released by ionizing radiation--is followed by two layers of comparable and very high field where charge multiplication occurs. Owing to the choice of the electrodes--either cross-wire meshes or parallel thick-wire grids at small pitch--the electric field is uniform over most of the gaps, and charge multiplication proceeds through a parallel-plate avalanche mode. In order to obtain a fast signal and a reduced avalanche spread in their prototypes, the authors have adopted rather narrow typical gaps of 4 mm for the first amplification region and 1 mm for the second. To avoid edge sparking, they have used either a gap increase at the edges or the insertion of thin mylar foil around the frame's edges. The last electrode in the structure, made with a printed-circuit board, is the only one equipped with electronics and is conveniently operated at ground potential. At regular intervals, four rows of pads are used to determine the coordinates of tracks in selected positions. Argon (90%) and methane (10%) comprise the gas filling.

Peisert, A.; Charpak, G.; Sauli, F.; Viezzoli, G.

1984-02-01T23:59:59.000Z

145

Sedimentary parameters of upper Barataria Bay, Louisiana  

E-Print Network (OSTI)

upon oonditions of sedimentation is exerted by currents set in motion 'by oceanic tides. Tidal activity causes sediment to be introduced into the upper bay and controls its distribution. A modifying influence i. s exerted by the influx of fresh... Classification and Distribution of Sediment Types Anomalous Areas CONDITIONS OF SEDIMENTATION Bathymetry Signifioance of Parameter Distribution Patterns Marginal areas Central bay Marginal embayments . ~ Environments of Deposition . CONCLUSIONS...

Siegert, Rudolf B

2012-06-07T23:59:59.000Z

146

Real-time seam tracking for rocket thrust chamber manufacturing  

SciTech Connect

A sensor-based control approach for real-time seam tracking of rocket thrust chamber assemblies has been developed to enable automation of a braze paste dispensing process. This approach utilizes a non-contact Multi-Axis Seam Tracking (MAST) sensor to track the seams. Thee MAST sensor measures capacitance variations between the sensor and the workpiece and produces four varying voltages which are read directly into the robot controller. A PID control algorithm which runs at the application program level has been designed based upon a simple dynamic model of the combined robot and sensor plant. The control algorithm acts on the incoming sensor signals in real-time to guide the robot motion along the seam path. Experiments demonstrate that seams can be tracked at 100 mm/sec within the accuracy required for braze paste dispensing.

Schmitt, D.J.; Novak, J.L. [Sandia National Labs., Albuquerque, NM (United States); Starr, G.P. [New Mexico Univ., Albuquerque, NM (United States); Maslakowski, J.E. [Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.

1993-11-01T23:59:59.000Z

147

Readout of TPC Tracking Chambers with GEMs and Pixel Chip  

SciTech Connect

Two layers of GEMs and the ATLAS Pixel Chip, FEI3, have been combined and tested as a prototype for Time Projection Chamber (TPC) readout at the International Linear Collider (ILC). The double-layer GEM system amplifies charge with gain sufficient to detect all track ionization. The suitability of three gas mixtures for this application was investigated, and gain measurements are presented. A large sample of cosmic ray tracks was reconstructed in 3D by using the simultaneous timing and 2D spatial information from the pixel chip. The chip provides pixel charge measurement as well as timing. These results demonstrate that a double GEM and pixel combination, with a suitably modified pixel ASIC, could meet the stringent readout requirements of the ILC.

Kadyk, John; Kim, T.; Freytsis, M.; Button-Shafer, J.; Kadyk, J.; Vahsen, S.E.; Wenzel, W.A.

2007-12-21T23:59:59.000Z

148

Development of Glass Resistive Plate Chambers for INO  

E-Print Network (OSTI)

The India-based Neutrino Observatory (INO) collaboration is planning to build a massive 50kton magnetised Iron Calorimeter (ICAL) detector, to study atmospheric neutrinos and to make precision measurements of the parameters related to neutrino oscillations. Glass Resistive Plate Chambers (RPCs) of about 2m X 2m in size are going to be used as active elements for the ICAL detector. We have fabricated a large number of glass RPC prototypes of 1m X 1m in size and have studied their performance and long term stability. In the process, we have developed and produced a number of materials and components required for fabrication of RPCs. We have also designed and optimised a number of fabrication and quality control procedures for assembling the gas gaps. In this paper we will review our activities towards development of glass RPCs for the INO ICAL detector and will present results of the characterisation studies of the RPCs.

Satyanarayana Bheesette; for the INO collaboration

2008-10-26T23:59:59.000Z

149

Conceptual Design Report for the Extreme Ecosystems Test Chambers  

SciTech Connect

This conceptual design supports the creation of Extreme Ecosystems Test Chambers, which will replicate deep subsurface and subocean environments characterized by high pressure (2,000 psi) and subfreezing to high temperature (-4 to 300 degrees F) with differing chemical and saturation conditions. The design provides a system to support research and development that includes heat transfer, phase change issues in porous media, microbiology in extreme environments, and carbon sequestration and extraction. The initial system design is based on the research needs to support the commercial production of methane hydrates from subsurface sediments. The design provides for three pressure vessels: a Down Hole Test Vessel, a Vertical Multi-phase Test Vessel, and a Horizontal Multi-phase Test Vessel.

C. Barnes; J. Beller; K. Caldwell; K. Croft; R. Cherry; W. Landman

1998-12-01T23:59:59.000Z

150

IMPEDANCE OF ELECTRON BEAM VACUUM CHAMBERS FOR THE NSLS-II STORAGE RING.  

SciTech Connect

In this paper we discuss computation of the coupling impedance of the vacuum chambers for the NSLS-II storage ring using the electromagnetic simulator GdfidL [1]. The impedance of the vacuum chambers depends on the geometric dimensions of the cross-section and height of the slot in the chamber wall. Of particular concern is the complex geometry of the infrared extraction chambers to be installed in special large-gap dipole magnets. In this case, wakefields are generated due to tapered transitions and large vertical-aperture ports with mirrors near the electron beam.

BLEDNYKH,A.; KRINSKY, S.

2007-06-25T23:59:59.000Z

151

Liquid fuel vaporizer and combustion chamber having an adjustable thermal conductor  

DOE Patents (OSTI)

The efficiency and effectiveness of apparatuses for vaporizing and combusting liquid fuel can be improved using thermal conductors. For example, an apparatus having a liquid fuel vaporizer and a combustion chamber can be characterized by a thermal conductor that conducts heat from the combustion chamber to the vaporizer. The thermal conductor can be a movable member positioned at an insertion depth within the combustion chamber that corresponds to a rate of heat conduction from the combustion chamber to the vaporizer. The rate of heat conduction can, therefore, be adjusted by positioning the movable member at a different insertion depth.

Powell, Michael R; Whyatt, Greg A; Howe, Daniel T; Fountain, Matthew S

2014-03-04T23:59:59.000Z

152

Operation of {sup 3}He Proportional Chambers in High Gamma Radiation Fields  

SciTech Connect

Operation of {sup 3}He proportional chambers with irradiated fissile materials is limited because of the sensitivity of these chambers to gamma ray events. The optimum performance of these chambers is achieved with proper selection of an additive gas to the chambers and with proper choice of preamplifier and linear amplifier time constants. The counting efficiency of a 4-atm, {sup 3}He-CO2 chamber is improved from 35% to 43% in a 200 R/hr gamma radiation field by decreasing the linear amplifier time constant. Likewise, the counting efficiency of a 1-atm, {sup 3}He-CF4 is improved from 11% to 14% in a 200 R/hr gamma radiation field by decreasing the linear amplifier time constant. The 4-atm, {sup 3}He-CO2 1-in.-OD chamber has a higher efficiency than the 1-atm, {sup 3}He-CF4 1-in.-OD chamber although the energy resolution of the 3 He-CF4 chamber is better than that for the {sup 3}He-CO2 chamber.

Hill, N.W.; Miller, V.C.; Valentine, T.E.; Williams, J.A.

1999-09-01T23:59:59.000Z

153

Beam quality corrections for parallel-plate ion chambers in electron reference dosimetry  

Science Journals Connector (OSTI)

Current dosimetry protocols (AAPM, IAEA, IPEM, DIN) recommend parallel-plate ionization chambers for dose measurements in clinical electron beams. This study presents detailed Monte Carlo simulations of beam quality correction factors for four different types of parallel-plate chambers: NACP-02, Markus, Advanced Markus and Roos. These chambers differ in constructive details which should have notable impact on the resulting perturbation corrections, hence on the beam quality corrections. The results reveal deviations to the recommended beam quality corrections given in the IAEA TRS-398 protocol in the range of 0%2% depending on energy and chamber type. For well-guarded chambers, these deviations could be traced back to a non-unity and energy-dependent wall perturbation correction. In the case of the guardless Markus chamber, a nearly energy-independent beam quality correction is resulting as the effects of wall and cavity perturbation compensate each other. For this chamber, the deviations to the recommended values are the largest and may exceed 2%. From calculations of type-B uncertainties including effects due to uncertainties of the underlying cross-sectional data as well as uncertainties due to the chamber material composition and chamber geometry, the overall uncertainty of calculated beam quality correction factors was estimated to be

K Zink; J Wulff

2012-01-01T23:59:59.000Z

154

SciTech Connect: ON THE ANALYSIS OF BUBBLE CHAMBER TRACKS  

Office of Scientific and Technical Information (OSTI)

by such analysis. The discussion is based largely on experience gained in performing hydrogen bubble chamber experiments with the University of California's Bevatron (6-Bev proton...

155

Mixed reactant single chamber fuel cell, using products generated from the electrolysis of an aqueous electrolyte.  

E-Print Network (OSTI)

??A Mixed Reactant Single Chamber (MRSC) Fuel Cell is a relatively recent concept in the field of fuel cell engineering originally developed in the late (more)

Jost, William C.

2008-01-01T23:59:59.000Z

156

Diagnostics of discharge channels for neutralized chamber transport in heavy ion fusion  

E-Print Network (OSTI)

ber of a heavy ion beam fusion reactor has many attractivein the reactor chamber for heavy ion fusion in preformedfusion. Controlled break- down and channel stability at reactor-

2002-01-01T23:59:59.000Z

157

Dispersion relation for magnetosonic waves within the upper atmospheric plasma  

Science Journals Connector (OSTI)

The dispersion relation for magnetosonic waves within the upper atmospheric plasma has been derived. The result can be...

S. S. De; Bithika Ghosh; Manasi Mal; B. Ghosh

1990-01-01T23:59:59.000Z

158

Upper bounds on the photon mass  

SciTech Connect

The effects of a nonzero photon rest mass can be incorporated into electromagnetism in a simple way using the Proca equations. In this vein, two interesting implications regarding the possible existence of a massive photon in nature, i.e., tiny alterations in the known values of both the anomalous magnetic moment of the electron and the gravitational deflection of electromagnetic radiation, are utilized to set upper limits on its mass. The bounds obtained are not as stringent as those recently found; nonetheless, they are comparable to other existing bounds and bring new elements to the issue of restricting the photon mass.

Accioly, Antonio [Laboratorio de Fisica Experimental (LAFEX), Centro Brasileiro de Pesquisas Fisicas (CBPF), Rua Dr. Xavier Sigaud 150, Urca, 22290-180, Rio de Janeiro, RJ (Brazil); Group of Field Theory from First Principles, Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Instituto de Fisica Teorica (IFT), Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Helayeel-Neto, Jose [Laboratorio de Fisica Experimental (LAFEX), Centro Brasileiro de Pesquisas Fisicas (CBPF), Rua Dr. Xavier Sigaud 150, Urca, 22290-180, Rio de Janeiro, RJ (Brazil); Group of Field Theory from First Principles, Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Scatena, Eslley [Instituto de Fisica Teorica (IFT), Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Group of Field Theory from First Principles, Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil)

2010-09-15T23:59:59.000Z

159

Laser-assisted homogeneous charge ignition in a constant volume combustion chamber  

Science Journals Connector (OSTI)

Homogeneous charge compression ignition (HCCI) is a very promising future combustion concept for internal combustion engines. There are several technical difficulties associated with this concept, and precisely controlling the start of auto-ignition is the most prominent of them. In this paper, a novel concept to control the start of auto-ignition is presented. The concept is based on the fact that most HCCI engines are operated with high exhaust gas recirculation (EGR) rates in order to slow-down the fast combustion processes. Recirculated exhaust gas contains combustion products including moisture, which has a relative peak of the absorption coefficient around 3?m. These water molecules absorb the incident erbium laser radiations (?=2.79?m) and get heated up to expedite ignition. In the present experimental work, auto-ignition conditions are locally attained in an experimental constant volume combustion chamber under simulated EGR conditions. Taking advantage of this feature, the time when the mixture is thought to auto-ignite could be adjusted/controlled by the laser pulse width optimisation, followed by its resonant absorption by water molecules present in recirculated exhaust gas.

Dhananjay Kumar Srivastava; Martin Weinrotter; Henrich Kofler; Avinash Kumar Agarwal; Ernst Wintner

2009-01-01T23:59:59.000Z

160

Numerical Study of Unsteady Detonation Wave Propagation in a Supersonic Combustion Chamber  

E-Print Network (OSTI)

Numerical Study of Unsteady Detonation Wave Propagation in a Supersonic Combustion Chamber T.H. Yi detonation waves in a supersonic flow in one-dimensional tube and two- dimensional wedged chamber parameters. Various features including a vortex are observed. 1 Introduction Detonation wave propagation

Texas at Arlington, University of

Note: This page contains sample records for the topic "upper containment chamber" 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.


161

Computation of Neutral Gas Flow From a Hall Thruster Into a Vacuum Chamber  

E-Print Network (OSTI)

to model a cold flow of xenon gas expanding from a Hall thruster into a vacuum chamber. The simulations are performed for the P5 Hall thruster operating in a large vacuum tank at the University of Michigan chamber are varied. A key physical parameter in the simulations concerns the probability that a xenon atom

Walker, Mitchell

162

Threats, design limits and design windows for laser IFE dry wall chambers  

E-Print Network (OSTI)

Threats, design limits and design windows for laser IFE dry wall chambers A. Rene´ Raffray-drive targets and a dry wall chamber. The dry wall must accommodate the ion and photon threat spectra from. The neutron energy is deposited deeper in the first wall and blanket and does not represent a major threat

Raffray, A. René

163

EFFECTS OF CHAMBER GEOMETRY AND GAS PROPERTIES ON HYDRODYNAMIC EVOLUTION OF IFE Zoran Dragojlovic1  

E-Print Network (OSTI)

-dependent response of the chamber environment between target ignitions. The fusion burn following the target ignition Dragojlovic1 and Farrokh Najmabadi2 Department of Electrical & Computer Engineering and Center for Energy releases large quantities of energy into the chamber. This energy should be removed and the environment

Najmabadi, Farrokh

164

Automated Monitoring of Soil Respiration: A Moving Chamber Design Nelson T. Edwards* and Jeffery S. Riggs  

E-Print Network (OSTI)

growthdifferential mode, and equivalent flow rates of reference gas (ambient air) and sample gas (air exiting chamber by establishing chamber when closed, provided an airtight seal. This feature and the temperature response rates continuously monitored soil temperature, or air temper- even in an environment with highly

165

Hydrogen production using single-chamber membrane-free microbial electrolysis cells  

E-Print Network (OSTI)

efficiencies of hydrogen fuel cells in converting hydrogen to electricity. The development of advancedHydrogen production using single-chamber membrane-free microbial electrolysis cells Hongqiang Hu., Hydrogen production using single-chamber membrane-free microbial electrol- ysis cells, Water Research (2008

Tullos, Desiree

166

A local limit theorem for random walks on the chambers of ~A2 buildings  

E-Print Network (OSTI)

A local limit theorem for random walks on the chambers of ~A2 buildings James Parkinson and Bruno. In this paper we outline an approach for analysing random walks on the chambers of buildings. The types of walks that we consider are those which are well adapted to the structure of the building: Namely walks

Paris-Sud XI, Université de

167

Upper Cumberland EMC - Energy Efficiency Rebate Programs | Department of  

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

Upper Cumberland EMC - Energy Efficiency Rebate Programs Upper Cumberland EMC - Energy Efficiency Rebate Programs Upper Cumberland EMC - Energy Efficiency Rebate Programs < Back Eligibility Commercial Construction Residential Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Heat Pumps Appliances & Electronics Water Heating Program Info State Tennessee Program Type Utility Rebate Program Rebate Amount Residential Heat Pump: $150 per unit Commercial Heat Pump: $150 per three tons Water Heater: $100 Provider Upper Cumberland Electric Membership Corporation Upper Cumberland Electric Membership Corporation (UCEMC), in collaboration with the Tennessee Valley Authority, offers incentives for its customers to purchase and install energy efficient equipment through the Energy Right

168

The American Chamber of Commerce of Trinidad & Tobago | Department of  

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

The American Chamber of Commerce of Trinidad & Tobago The American Chamber of Commerce of Trinidad & Tobago The American Chamber of Commerce of Trinidad & Tobago May 13, 2008 - 12:00pm Addthis Remarks As Prepared for Delivery by Secretary Bodman Thank you, Raymond. I appreciate the Chamber organizing this gathering this morning. The American Chamber here on Trinidad and Tobago is an important regional voice in support of the free market, so I want to commend you for hosting the Business Future of the Americas conference next month. Having spent most of my career in the private sector, it is always rewarding to be among colleagues from the business community. I'm also quite pleased to be back in Trinidad & Tobago, having done business here during my time at Cabot Corporation. I've always been impressed with this nation's government, its people and

169

MHK Technologies/Multi Resonant Chambers MRC 1000 | Open Energy Information  

Open Energy Info (EERE)

Resonant Chambers MRC 1000 Resonant Chambers MRC 1000 < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Multi Resonant Chambers MRC 1000.jpg Technology Profile Primary Organization ORECon Technology Resource Click here Wave Technology Type Click here Oscillating Water Column Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description A 1 5MW Multi Resonant Chamber MRC using Oscillating Water Column OWC principles Consists of 3 x 500kW independent chambers each with a Dresser Rand HydroAir turbine driving an induction generator Full power conversion system delivers grid compliant power 1 5MW 33kV 60Hz to shore Device is tension moored to maximise power capture and minimise footprint All maintenance is done on board No moving parts in the water Turbines are low speed 300rpm high efficiency 75 and low noise

170

U.S. Chamber of Commerce Biofuels Dialogue Series: Outlook for an Emerging  

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

Chamber of Commerce Biofuels Dialogue Series: Outlook for an Chamber of Commerce Biofuels Dialogue Series: Outlook for an Emerging Global Biofuels Market U.S. Chamber of Commerce Biofuels Dialogue Series: Outlook for an Emerging Global Biofuels Market January 29, 2008 - 10:53am Addthis Remarks as Prepared For Delivery by Secretary Bodman Thank you very much, Bruce, for that kind introduction. My thanks also to Tom Donahue and the leadership of the Chamber for inviting me to be with you today. I was quite pleased to hear that the Chamber was sponsoring this event. As anyone who knows me - or has heard me speak recently - can tell you, the biofuels industry is a favorite topic of mine. In my view, advanced biofuels offer tremendous promise for helping our nation to bring about a new energy future-one that is cleaner, more sustainable, more affordable,

171

Development of Aluminium Vacuum Chambers for the LHC Experiments at CERN  

E-Print Network (OSTI)

Beam losses may cause activation of vacuum chamber walls, in particular those of the Large Hadron Collider (LHC) experiments. For the High Luminosity (HL-LHC), the activation of such vacuum chambers will increase. It is therefore necessary to use a vacuum chamber material which interacts less with the circulating beam. While beryllium is reserved for the collision point, a good compromise between cost, availability and transparency is obtained with aluminium alloys; such materials are a preferred choice with respect to austenitic stainless steel. Manufacturing a thin-wall aluminium vacuum chamber presents several challenges as the material grade needs to be machinable, weldable, leak-tight for small thicknesses, and able to withstand heating to 250C for extended periods of time. This paper presents some of the technical challenges during the manufacture of these vacuum chambers and the methods for overcoming production difficulties, including surface treatments and Non-Evaporable Getter (NEG) thin-film coat...

Gallilee, M; Costa-Pinto, P; Lepeule, P; Perez-Espinos, J; Marques Antunes Ferreira, L; Prever-Loiri, L; Sapountzis, A

2014-01-01T23:59:59.000Z

172

Pressure pulsations in combustion chambers of large gas turbines  

SciTech Connect

Flame instabilities and pressure pulsations have been measured in three different types of gas turbine combustors. These are the single and twin silo (such as the ABB GT13E and the Siemens V94.2), the annular combustion chamber (ABB GT 13E2, Siemens V84.3A, etc), and the multi-can combustors common on GEC-EGT gas turbines. Pressure pulsations are mostly resonant. They are interpreted with help of an acoustical model. Non-resonant modes at low frequencies (flame flicker) are ascribed to imperfect mixing especially in premix burners. At higher frequencies they are often due to vortices from the burners. Modifications of the burners, changes in the geometry of the liners and the addition of acoustical dampers are means to abate flame instabilities and the associated resonances. Judicious ways to run the gas turbine can help to avoid them. The efficiency of acoustical dampers of the Helmholtz type has been investigated experimentally and with model predictions.

Verhage, A.J.L.; Stevens, P.M.P.

1998-07-01T23:59:59.000Z

173

CONTAINER MATERIALS, FABRICATION AND ROBUSTNESS  

SciTech Connect

The multi-barrier 3013 container used to package plutonium-bearing materials is robust and thereby highly resistant to identified degradation modes that might cause failure. The only viable degradation mechanisms identified by a panel of technical experts were pressurization within and corrosion of the containers. Evaluations of the container materials and the fabrication processes and resulting residual stresses suggest that the multi-layered containers will mitigate the potential for degradation of the outer container and prevent the release of the container contents to the environment. Additionally, the ongoing surveillance programs and laboratory studies should detect any incipient degradation of containers in the 3013 storage inventory before an outer container is compromised.

Dunn, K.; Louthan, M.; Rawls, G.; Sindelar, R.; Zapp, P.; Mcclard, J.

2009-11-10T23:59:59.000Z

174

Upper Peninsula Power Co | Open Energy Information  

Open Energy Info (EERE)

Peninsula Power Co Peninsula Power Co Jump to: navigation, search Name Upper Peninsula Power Co Place Michigan Utility Id 19578 Utility Location Yes Ownership I NERC Location RFC NERC RFC Yes Operates Generating Plant Yes Activity Generation Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png A-1 - Residential Seasonal Service Power Supply Service Residential A-1 - Residential Service Seasonal Residential A-2 - Residential Service Seasonal Residential Capacity Buyback Rider CP-IB

175

Using large environmental chamber technique for gaseous contaminant removal equipment test  

SciTech Connect

The US Association of Home Appliance Manufacturers (AHAM) has set a voluntary standard for testing the initial dust-removal capacity of portable air cleaners. In the authors` test of portable air cleaners for the local consumer council, the AHAM method was extended to test the initial removal capacity for gaseous phase pollutants. Also, carbon filters` efficiency change over time in toluene removal on a number of air cleaners was tested. In using a large chamber to carry out these tests, the chamber wall adsorption and re-emission effects were experimentally quantified. These tests indicated that a large chamber, with its wall surface adsorption controlled, is simple and robust to use to quantify the initial cleaning capacity for gaseous phase pollutants. Based on these test results, a large chamber method is proposed to test the performance lifetimes of portable air cleaners. The system advantages of the method over the in-duct performance life test methods are that no continuous air-cleaning system is required and that the chamber`s humidity and temperature can be maintained at the desired values more easily with the combination of a unitary dehumidifier and a bubbler system. This paper will present the trial results with portable air cleaner tests and discuss the large environmental chamber techniques.

Niu, J.; Tung, T.C.W.; Chui, V.W.Y. [Hong Kong Polytechnic Univ. (Hong Kong). Dept. of Building Services Engineering

1998-12-31T23:59:59.000Z

176

Plastic ball and streamer chamber experiments at the Bevalac  

SciTech Connect

Single particle inclusive experiments, and experiments that additionally measure a few correlations like the associated multiplicity, have provided the main contribution to our present understanding of high energy heavy ion collisions. The results from those experiments are in overall agreement with calculations of the cascade and hydrodynamical models. In the cascade model the collision of two nuclei is simulated as a cascade of nucleon-nucleon collisions using measured N-N cross sections. The hydrodynamical model, on the other hand, describes the nuclear collision as that of two fluids and makes use of a nuclear equation of state relating thermal and compressional energy densities to pressure. The pressure field dominates the expansion phase and leads to collective flow of the reaction products in a preferred direction. The observation of such effects in inclusive experiments is not well established. Collective effects that manifest themselves in the shape of the event in phase space are expected to be seen best in the new complete event detectors that measure the final state as exclusively as presently possible by measuring most of the charged particles emitted in the reaction. In addition, those detectors are well suited to test macroscopic concepts such as equilibrium and temperature. Global methods like the sphericity or thrust analysis take into account all the correlations measured in the event and are specially designed to determine the shape of an event in phase space and thus to define a reaction plane. Recent data from the Plastic Ball and the streamer chamber experiments, the first complete event detectors in use at the Bevalac, are presented in this report.

Ritter, H.G.

1982-07-01T23:59:59.000Z

177

Validation of the neutron and gamma fields in the JSI TRIGA reactor using in-core fission and ionization chambers  

Science Journals Connector (OSTI)

Abstract CEA developed fission chambers and ionization chambers were utilized at the JSI TRIGA reactor to measure neutron and gamma fields. The measured axial fission rate distributions in the reactor core are generally in good agreement with the calculated values using the Monte Carlo model of the reactor thus verifying both the computational model and the fission chambers. In future, multiple absolutely calibrated fission chambers could be used for more accurate online reactor thermal power monitoring.

Gaper erovnik; Tanja Kaiba; Vladimir Radulovi?; Ane Jazbec; Sebastjan Rupnik; Loc Barbot; Damien Fourmentel; Luka Snoj

2015-01-01T23:59:59.000Z

178

A study of the response of a gas ionization chamber to different sources of ionizing radiation  

E-Print Network (OSTI)

ranged from a few keV to 20 MeV and peaked at 5 MeV. The neutrons were produced by the (n, n) reaction o(5. 16MeV)+ Be ~ C+n( 5MeV). A 2-in thick lead brick was placed in front of the chamber to absorb the soft 7-rays emitted from the source along... with the neutrons. The source was kept 9in away from the chamber during all runs. Data were taken for both gas mixtures with the cathode pad facing the source and also with the chamber turned around. In addition to these measurements, four more runs were made...

Zamble?-Die?guez, Filiberto Edmundo

2012-06-07T23:59:59.000Z

179

Power and Public Chambers in the development of civil society in Russia  

Science Journals Connector (OSTI)

Abstract Embodying a state vision of how civil society ought to function and be designed by the authorities, Public Chambers in Russia have been criticized as means of state control. This state dominance is the starting point in this article, which asks what room to manoeuvre a regional Public Chamber has. Drawing upon fieldwork this article examines how members and local observers of the Public Chamber give meaning to this activity. The analysis assesses the role of state dominance, discussion of routines and responses to local demands, and concludes that these incremental developments form civil society in Russia.

Kirsti Stuvy

2014-01-01T23:59:59.000Z

180

High Accuracy, Two-Dimensional Read-Out in Multiwire Proportional Chambers  

DOE R&D Accomplishments (OSTI)

In most applications of proportional chambers, especially in high-energy physics, separate chambers are used for measuring different coordinates. In general one coordinate is obtained by recording the pulses from the anode wires around which avalanches have grown. Several methods have been imagined for obtaining the position of an avalanche along a wire. In this article a method is proposed which leads to the same range of accuracies and may be preferred in some cases. The problem of accurate measurements for large-size chamber is also discussed.

Charpak, G.; Sauli, F.

1973-02-14T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Voltage Oscillations in Single-Chamber Fuel Cells operating under a C3H8 / O2 mixture.  

E-Print Network (OSTI)

1 Voltage Oscillations in Single-Chamber Fuel Cells operating under a C3H8 / O2 mixture. Geoffroy : Jean-Paul Viricelle, viricelle@emse.fr Phone : 33 4 77 42 02 52 Abstract : Single-Chamber Fuel Cells this behaviour. Keywords: Single Chamber Fuel Cell, Propane, Oscillation, Anode. 1. Introduction Solid Oxide Fuel

Paris-Sud XI, Université de

182

Leak test adapter for containers  

DOE Patents (OSTI)

An adapter is provided for facilitating the charging of containers and leak testing penetration areas. The adapter comprises an adapter body and stem which are secured to the container's penetration areas. The container is then pressurized with a tracer gas. Manipulating the adapter stem installs a penetration plug allowing the adapter to be removed and the penetration to be leak tested with a mass spectrometer. Additionally, a method is provided for using the adapter.

Hallett, Brian H. (Elizabeth, PA); Hartley, Michael S. (Canonsburg, PA)

1996-01-01T23:59:59.000Z

183

Characterization of a geothermal system in the Upper Arkansas...  

Open Energy Info (EERE)

Paper: Characterization of a geothermal system in the Upper Arkansas Valley Authors T. Blum, K. van Wijk, L. Liberty, M. Batzle, R. Krahenbuhl, A. Revil and R. Reynolds...

184

Upper crustal structure of an obliquely extending orogen, central...  

Open Energy Info (EERE)

eastern California Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Upper crustal structure of an obliquely extending orogen, central...

185

Schlumberger soundings in the Upper Raft River and Raft River...  

Open Energy Info (EERE)

Schlumberger soundings in the Upper Raft River and Raft River Valleys, Idaho and Utah Abstract In 1975, the U.S. Geological Survey made seventy Schlumberger resistivity...

186

Neutron And Gamma Detector Using An Ionization Chamber With An Integrated  

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

Neutron And Gamma Detector Using An Ionization Chamber Neutron And Gamma Detector Using An Ionization Chamber Neutron And Gamma Detector Using An Ionization Chamber With An Integrated Body And Moderator A detector for detecting neutrons and gamma radiation includes a cathode that defines an interior surface and an interior volume. Available for thumbnail of Feynman Center (505) 665-9090 Email Neutron And Gamma Detector Using An Ionization Chamber With An Integrated Body And Moderator A detector for detecting neutrons and gamma radiation includes a cathode that defines an interior surface and an interior volume. A conductive neutron-capturing layer is disposed on the interior surface of the cathode and a plastic housing surrounds the cathode. A plastic lid is attached to the housing and encloses the interior volume of the cathode forming an

187

Study of Low Speed Flow Cytometry for Diffraction Imaging with Different Chamber  

E-Print Network (OSTI)

for optimization of the chamber design and improvement of the cell positioning accuracy for study of slow moving utilize a sheath nozzle with a conical end or orifice for hydrodynamic focusing the fluid injected

188

Organic Aerosol Formation from Photochemical Oxidation of Diesel Exhaust in a Smog Chamber  

Science Journals Connector (OSTI)

Diluted exhaust from a diesel engine was photo-oxidized in a smog chamber to investigate secondary organic aerosol (SOA) production. Photochemical aging rapidly produces significant SOA, almost doubling the organic aerosol contribution of primary ...

Emily A. Weitkamp; Amy M. Sage; Jeffrey R. Pierce; Neil M. Donahue; Allen L. Robinson

2007-09-11T23:59:59.000Z

189

E-Print Network 3.0 - atlas mdt chambers Sample Search Results  

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

Page: << < 1 2 3 4 5 > >> 1 CHRISTOPH AMELUNG Date of birth July 14, 1971 (DetmoldGermany) Summary: on the optical alignment system of the ATLAS MDT chambers July 2002 -...

190

A multibeam radio-frequency ion source with a discharge chamber inside a resonator  

Science Journals Connector (OSTI)

The design of a multibeam ion source with a discharge chamber inside a half-wavelength radio-frequency (RF) resonator with a spiral load ... resonator. The RF oscillator operating at a frequency of 38 MHz is grou...

B. Yu. Bogdanovich; V. P. Zubovskii

2008-09-01T23:59:59.000Z

191

E-Print Network 3.0 - argon imaging chamber Sample Search Results  

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

Centre de mathmatiques Collection: Mathematics 7 Bio390 Problem: Gas Laws thanks to Dr. J.F. Anderson, Summary: level on Earth. Inside the ground-level plastic chamber the...

192

The design, fabrication, and implications of a solvothermal vapor annealing chamber  

E-Print Network (OSTI)

This thesis documents the design, fabrication, use, and benefits of a prototype aluminum solvothermal vapor annealing chamber which facilitates the self-assembly of block copolymers (BCPs) on silicon wafers which are then ...

Porter, Nathaniel R., Jr

2013-01-01T23:59:59.000Z

193

Method of correcting eddy current magnetic fields in particle accelerator vacuum chambers  

DOE Patents (OSTI)

A method for correcting magnetic field aberrations produced by eddy currents induced in a particle accelerator vacuum chamber housing is provided wherein correction windings are attached to selected positions on the housing and the windings are energized by transformer action from secondary coils, which coils are inductively coupled to the poles of electro-magnets that are powered to confine the charged particle beam within a desired orbit as the charged particles are accelerated through the vacuum chamber by a particle-driving rf field. The power inductively coupled to the secondary coils varies as a function of variations in the power supplied by the particle-accelerating rf field to a beam of particles accelerated through the vacuum chamber, so the current in the energized correction coils is effective to cancel eddy current flux fields that would otherwise be induced in the vacuum chamber by power variations in the particle beam.

Danby, Gordon T. (Wading River, NY); Jackson, John W. (Shoreham, NY)

1991-01-01T23:59:59.000Z

194

Method of correcting eddy current magnetic fields in particle accelerator vacuum chambers  

DOE Patents (OSTI)

A method for correcting magnetic field aberrations produced by eddy currents induced in a particle accelerator vacuum chamber housing is provided wherein correction windings are attached to selected positions on the housing and the windings are energized by transformer action from secondary coils, which coils are inductively coupled to the poles of electro-magnets that are powered to confine the charged particle beam within a desired orbit as the charged particles are accelerated through the vacuum chamber by a particle-driving rf field. The power inductively coupled to the secondary coils varies as a function of variations in the power supplied by the particle-accelerating rf field to a beam of particles accelerated through the vacuum chamber, so the current in the energized correction coils is effective to cancel eddy current flux fields that would otherwise be induced in the vacuum chamber by power variations (dB/dt) in the particle beam.

Danby, G.T.; Jackson, J.W.

1990-03-19T23:59:59.000Z

195

Electron-Hadron shower discrimination in a liquid argon time projection chamber  

E-Print Network (OSTI)

By exploiting structural differences between electromagnetic and hadronic showers in a multivariate analysis we present an efficient Electron-Hadron discrimination algorithm for liquid argon time projection chambers, validated using Geant4 simulated data.

J. J. Back; G. J. Barker; A. J. Bennieston; S. B. Boyd; B. Morgan; Y. A. Ramachers

2012-10-08T23:59:59.000Z

196

Field calibration studies for ionisation chambers in mixed high-energy radiation fields  

Science Journals Connector (OSTI)

......roof over the accelerator measures only...activation of the PS vacuum chamber, measured after stop of the accelerator. A loss of protons...High Energy and Nuclear Physics 2003 Conference...high-energy accelerators. (2003) Doctoral......

C. Theis; D. Forkel-Wirth; M. Fuerstner; S. Mayer; Th. Otto; S. Roesler; H. Vincke

2007-08-01T23:59:59.000Z

197

Space Chamber Reaches Cold Target at Unprecedented Efficiency | U.S. DOE  

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

Space Chamber Reaches Cold Target at Unprecedented Efficiency Space Chamber Reaches Cold Target at Unprecedented Efficiency Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » October 2012 Space Chamber Reaches Cold Target at Unprecedented Efficiency Thomas Jefferson Laboratory lends expertise in cryogenics developments. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of NASA NASA's Space Environment Simulation Lab Chamber A, which is used by the

198

The Effect of Heat Treatments and Coatings on the Outgassing Rate of Stainless Steel Chambers  

SciTech Connect

The outgassing rates of four nominally identical 304L stainless steel vacuum chambers were measured to determine the effect of chamber coatings and heat treatments. One chamber was coated with titanium nitride (TiN) and one with amorphous silicon (a-Si) immediately following fabrication. One chamber remained uncoated throughout, and the last chamber was first tested without any coating, and then coated with a-Si following a series of heat treatments. The outgassing rate of each chamber was measured at room temperatures between 15 and 30 deg C following bakes at temperatures between 90 and 400 deg C. Measurements for bare steel showed a significant reduction in the outgassing rate by more than a factor of 20 after a 400 deg C heat treatment (3.5 x 10{sup 12} TorrL s{sup -1}cm{sup -2} prior to heat treatment, reduced to 1.7 x 10{ sup -13} TorrL s{sup -1}cm{sup -2} following heat treatment). The chambers that were coated with a-Si showed minimal change in outgassing rates with heat treatment, though an outgassing rate reduced by heat treatments prior to a-Si coating was successfully preserved throughout a series of bakes. The TiN coated chamber exhibited remarkably low outgassing rates, up to four orders of magnitude lower than the uncoated stainless steel. An evaluation of coating composition suggests the presence of elemental titanium which could provide pumping and lead to an artificially low outgassing rate. The outgassing results are discussed in terms of diffusion-limited versus recombination-limited processes.

Mamum, Md Abdullah A. [Old Dominion Univ., Norfolk, VA (United States); Elmustafa, Abdelmageed A, [Old Dominion Univ., Norfolk, VA (United States); Stutzman, Marcy L. [JLAB, Newport News, VA (United States); Adderley, Philip A. [JLAB, Newport News, VA (United States); Poelker, Matthew [JLAB, Newport News, VA (United States)

2014-03-01T23:59:59.000Z

199

Invention and History of the Bubble Chamber (LBNL Summer Lecture Series)  

ScienceCinema (OSTI)

Summer Lecture Series 2006: Don Glaser won the 1960 Nobel Prize for Physics for his 1952 invention of the bubble chamber at Berkeley Lab, a type of particle detector that became the mainstay of high-energy physics research throughout the 1960s and 1970s. He discusses how, inspired by bubbles in a glass of beer, he invented the bubble chamber and detected cosmic-ray muons.

Glaser, Don

2011-04-28T23:59:59.000Z

200

Dual-chamber plasma deposition of A-Si:H solar cells at high rates using disilane  

SciTech Connect

The use of a separated chamber deposition system for the fabrication of a-Si:H solar cells from disilane at high deposition rates results in a substantial improvement in short circuit current compared to that obtained from a single-chamber system. The spectral responses of cells fabricated in the dual-chamber mode are compared to those made in the single-chamber mode. The results are interpreted by assuming that the rate of removal of boron contaminants from the chamber is independent of deposition rate.

Rajeswaran, G.; Vanier, P.E.; Corderman, R.R.; Kampas, F.J.

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Integrated Solar Upper Stage (ISUS) mission trades  

SciTech Connect

Solar thermal propulsion and propulsion/power systems were recently identified as key technologies in the Operational Effectiveness and Cost Comparison Study (OECS) sponsored by Phillips Laboratory (PL). These technologies were found to be pervasively cost effective with short transfer times and very good performance across a wide range of missions. The on-going Integrated Solar Upper Stage (ISUS) Program sponsored by PL represents development of a solar thermal propulsion/power (bimodal) system. As part of this effort, mission trades are being conducted to further define the ISUS system for geosynchronous equatorial orbit (GEO), high Earth orbit (HEO-Molniya class), and mid Earth orbit (MEO-GPS class) missions. These trades will consider launch vehicles ranging in size from a LLV3 to an Atlas IIAS that insert the ISUS into low Earth orbit (LEO). These trades will be used to define the ISUS system for the planned Engine Ground Demonstration, a space demonstration mission, and as a future operational system.

Frye, P. [Rockwell Aerospace, Canoga Park, CA (United States). Rocketdyne Div.

1996-12-31T23:59:59.000Z

202

NOVEL CHAMBER DESIGN FOR AN IN-VACUUM CRYO-COOLED MINI-GAP UNDULATOR.  

SciTech Connect

A stainless steel, Ultra-High Vacuum (UHV) chamber, featuring a large vertical rectangular port (53''W by 16''H), has been fabricated to house the one-meter magnet assembly of a newly installed undulator insertion device for beamline X-25 at the National Synchrotron Light Source. To achieve UHV, the new chamber is equipped with a differential ion pump, NEG pump, nude ion gauge, residual gas analyzer, and an all metal roughing valve. Temperature of the magnet assembly is maintained below 90 C during vacuum bake. The large rectangular port cover is sealed to the main flange of the chamber using a one-piece flat aluminum gasket and special sealing surfaces developed exclusively by Nor-Cal Products, Inc. The large flange provides easy access to the gap of the installed magnet girders for in situ magnetic measurements and shimming. Special window ports were designed into the cover and chamber for manipulation of optical micrometers external to the chamber to provide precise measurements of the in-vacuum magnet gap. The vacuum chamber assembly features independently vacuum-isolated feedthroughs that can be used for either water-or-cryogenic refrigeration-cooling of the monolithic magnet girders. This would allow for cryogenic-cooled permanent magnet operation and has been successfully tested within temperature range of +100 C to -150 C. Details of the undulator assembly for beamline X-25 is described in the paper.

HU, J.-P.; FOERSTER, C.L.; SKARITKA, J.R.; WATERMAN, D.

2006-05-24T23:59:59.000Z

203

A wireless sensor tag platform for container security and integrity  

SciTech Connect

Cargo containers onboard ships are widely used in the global supply chain. The need for container security is evidenced by the Container Security Initiative launched by the U.S. Bureau of Customs and Border Protection (CBP). One method of monitoring cargo containers is using low power wireless sensor tags. The wireless sensor tags are used to set up a network that is comprised of tags internal to the container and a central device. The sensor network reports alarms and other anomalies to a central device, which then relays the message to an outside network upon arrival at the destination port. This allows the port authorities to have knowledge of potential security or integrity issues before physically examining the container. Challenges of using wireless sensor tag networks for container security include battery life, size, environmental conditions, information security, and cost among others. PNNL developed an active wireless sensor tag platform capable of reporting data wirelessly to a central node as well as logging data to nonvolatile memory. The tags, operate at 2.4 GHz over an IEEE 802.15.4 protocol, and were designed to be distributed throughout the inside of a shipping container in the upper support frame. The tags are mounted in a housing that allows for simple and efficient installation or removal prior to, during, or after shipment. The distributed tags monitor the entire container volume. The sensor tag platform utilizes low power electronics and provides an extensible sensor interface for incorporating a wide range of sensors including chemical, biological, and environmental sensors.

Amaya, Ivan A.; Cree, Johnathan V.; Mauss, Fredrick J.

2011-05-06T23:59:59.000Z

204

Phase mixing of upper hybrid oscillations in a cold inhomogeneous plasma placed in an inhomogeneous magnetic field  

SciTech Connect

We study phase mixing/wave breaking phenomena of upper hybrid modes in a cold inhomogeneous plasma placed in an inhomogeneous magnetic field. Inhomogeneities both in the background ion density and magnetic field profile are treated as periodic in space but independent in time. The Lagrangian fluid description is employed to obtain an exact solution of this fully nonlinear problem. It is demonstrated that the upper hybrid modes, excited by an initial local charge imbalance, break via phase mixing, induced by the inhomogeneities. It is also shown that it is possible to avoid phase mixing in excited upper hybrid oscillations in an inhomogeneous plasma containing a finite amplitude ion density fluctuation. The choice of external magnetic field is shown to have a key role in avoiding phase mixing in such oscillations. The relevance of our investigation regarding the particle acceleration in an inhomogeneous plasma has also been discussed.

Sarkar, Anwesa; Maity, Chandan; Chakrabarti, Nikhil [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064 (India)] [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064 (India)

2013-05-15T23:59:59.000Z

205

Diversity in the upper management of leading Texas contractors  

E-Print Network (OSTI)

of the overall sample, Gender, Position, or Ethnicity categories. It was found that the Ethnic make up of upper management is not representative of the Ethnic make up of the Texas or national construction workforces, while the Gender make up of upper management...

Lawrence, Anne Nicole

2003-01-01T23:59:59.000Z

206

Managing Upper extremity Fx's Sweden 10-Managing Pediatric  

E-Print Network (OSTI)

Managing Upper extremity Fx's Sweden 10- 05 1 Managing Pediatric Fractures Andrew Pennock, M extremity Fx's Sweden 10- 05 2 Children Are Not Miniature Adults! · Open Growth Plates · Remodeling is Changing "Citius, Altius, Fortius" - Faster, Higher, Stronger #12;Managing Upper extremity Fx's Sweden 10

Squire, Larry R.

207

Seal device for ferromagnetic containers  

DOE Patents (OSTI)

A temporary seal or patch assembly prevents the escape of contents, e.g., fluids and the like, from within a container having a breach there through until the contents can be removed and/or a repair effected. A frame that supports a sealing bladder can be positioned over the breach and the frame is then attached to the container surface, which must be of a ferromagnet material, by using switchable permanent magnets. The permanent magnets are designed to have a first condition that is not attracted to the ferromagnetic surface and a second conditions whereby the magnets are attracted to the surface with sufficient force to support the seal assembly on the surface. Latching devices may be attached to the frame and engage the container surface with hardened pins to prevent the lateral movement of the seal assembly along the container surface from external forces such as fluid drag or gravity. 10 figs.

Meyer, R.E.; Jason, A.J.

1994-10-18T23:59:59.000Z

208

Seal device for ferromagnetic containers  

DOE Patents (OSTI)

A temporary seal or patch assembly prevents the escape of contents, e.g., fluids and the like, from within a container having a breach therethrough until the contents can be removed and/or a repair effected. A frame that supports a sealing bladder can be positioned over the breach and the frame is then attached to the container surface, which must be of a ferromagnet material, by using switchable permanent magnets. The permanent magnets are designed to have a first condition that is not attracted to the ferromagnetic surface and a second conditions whereby the magnets are attracted to the surface with sufficient force to support the seal assembly on the surface. Latching devices may be attached to the frame and engage the container surface with hardened pins to prevent the lateral movement of the seal assembly along the container surface from external forces such as fluid drag or gravity.

Meyer, Ross E. (Los Alamos, NM); Jason, Andrew J. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

209

The STAPL Parallel Container Framework  

E-Print Network (OSTI)

The Standard Template Adaptive Parallel Library (STAPL) is a parallel programming infrastructure that extends C with support for parallelism. STAPL provides a run-time system, a collection of distributed data structures (pContainers) and parallel...

Tanase, Ilie Gabriel

2012-02-14T23:59:59.000Z

210

Paleotectonic controls on deposition of upper Upper Jurassic La Casita Formation, east-central Chihuahua, Mexico  

SciTech Connect

Surface mapping of the basal Mesozoic La Casita Formation (upper Upper Jurassic) in east-central Chihuahua, Mexico, indicates initial Mesozoic sedimentation occurred in a segmented, interconnected subbasin of the Chihuahua trough. La Casite Formation (1200 m thick) is a tectonostratigraphic unit resting with angular unconformity on the Lower Permian Plomosas Formation. It consists primarily of siliciclastic material with sporadic interbedded limestones. The dominant lithofacies, approximately 1000 m thick, consists of turbiditic sandstone units (10-20 m) alternating with thicker, monotonous shale sequences. In the mapped area (approximately 30 km/sup 2/), flute cast measurements indicate flows from both the northeast (N20/degree/E) and southwest (S58/degree/W). Turbiditic sandstone units appear to pinch out and/or interfinger as they extend from the north and south into the central portion of the area. The initial opening of the Chihuahua trough is often associated with Late Jurassic block faulting, related to development of the ancestral Gulf of Mexico. Synrift depositional sequences of a similar age have been described in southern Coahuila, northern Zacatecas, and western Chiapas, Mexico. The subbasin (graben ) examined here may be ascribed a paleoposition near the western edge of the early Chihuahua trough. The western boundary of the early trough may have comprised a series of these subbasins, forming a cuspate or serrated coastline. Late Jurassic ammonites recovered from this and other localities along the length of the Chihuahua trough suggest that the subbasins were interconnected by means of an eastern continuous seaway.

Roberts, D.C.

1989-03-01T23:59:59.000Z

211

The suitability of large area drift chambers as the technology choice for the Cosmic Ray Inspection and Passive Tomography (CRIPT) project  

SciTech Connect

The CRIPT project brings together several Canadian institutions, concerned with the detection of Special Nuclear Materials (SNM), addressing a requirement at ports-of-entry for detection of SNM in the many thousands of containers that flow into and out of Canada every day, while at the same time providing a way of monitoring the contents of nuclear waste storage containers, for waste management and non-proliferation reasons. The scale of these applications is large - typically tens of cubic metres, requiring detectors that can cover a large area at a minimum cost. The CRIPT project considered drift chambers adapted from high energy physics experience, as one of its technology choices. We report here on the performance of a full scale prototype, which covers an area of 2.4 m x 1.2 m with only 6 readout channels, and provides a 2D data point with accuracies (in x and z) of around 2 mm. (authors)

Anghel, V. [Atomic Energy Canada Ltd., Chalk River, ON K0J 1J0 (Canada); Armitage, J. [Carleton Univ., Ottawa, ON (Canada); Botte, J.; Boudjemline, K. [Carleton Univ., Ottawa, ON (Canada); Bryman, D.; Bueno, J. [Advanced Applied Physics Solutions, Vancouver, BC (Canada); Charles, E. [Canadian Border Services Agency, Ottawa, ON K1A 0L8 (Canada); Cousins, T. [International Safety Research, Ottawa, ON K2E 7J6 (Canada); Erlandson, A. [Carleton Univ., Ottawa, ON (Canada); Gallant, G. [Canadian Border Services Agency, Ottawa, ON K1A 0L8 (Canada); Jewett, C.; Jonkmans, G. [Atomic Energy Canada Ltd., Chalk River, ON K0J 1J0 (Canada); Liu, Z. [Advanced Applied Physics Solutions, Vancouver, BC (Canada); Noel, S. [International Safety Research, Ottawa, ON K2E 7J6 (Canada); Oakham, F. G. [Carleton Univ., Ottawa, ON (Canada); Stocki, T. J. [Health Canada, Ottawa, ON K1A 0K9 (Canada); Thompson, M. [Atomic Energy Canada Ltd., Chalk River, ON K0J 1J0 (Canada); Waller, D. [Defence Research Development Canada, Ottawa, ON K1A 0Z4 (Canada)

2011-07-01T23:59:59.000Z

212

Apparatus for adjusting and maintaining the humidity of gas at a constant value within a closed system  

DOE Patents (OSTI)

The humidity of a gas within a closed system is maintained at constant level by providing a saturated salt solution within a lower chamber in communication with an upper chamber conjointly defined by upper and lower container sections in sealing contact with each other to establish a closed container. A partition wall separates the salt solution from the test region in the upper chamber. A tube extending through the partition plate allows humidified gas to pass from the lower to the upper chamber. A glass wool plug or membranous material within the tube prevents migration of salt into the test region.

Abernathy, B.R.; Walters, R.R.

1985-08-05T23:59:59.000Z

213

April 10, 2002 A. R. Raffray, et al., Dynamic Chamber Armor Behavior in IFE and MFE 1 Dynamic Chamber Armor Behavior in IFE and MFE  

E-Print Network (OSTI)

Limiter 0.5 (~8 for ~100s) 30000 (5000) Baffle 3 3000-10000 Divertor target ~10 3000-10000 #12;April 10/m2 Affected area 5-10 m2 A few m2 ~10 m2 Chamber wall (R~5-10 m) Location Surface (near divertor ms ~ 1-3 µs Max. Temperature Melting/ sublimation Melting/ sublimation Melting/ sublimation ~ 2000-3000

Raffray, A. René

214

U.S. Chamber of Commerce Biofuels Dialogue Series: Outlook for an Emerging  

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

Commerce Biofuels Dialogue Series: Outlook for an Commerce Biofuels Dialogue Series: Outlook for an Emerging Global Biofuels Market U.S. Chamber of Commerce Biofuels Dialogue Series: Outlook for an Emerging Global Biofuels Market January 29, 2008 - 10:53am Addthis Remarks as Prepared For Delivery by Secretary Bodman Thank you very much, Bruce, for that kind introduction. My thanks also to Tom Donahue and the leadership of the Chamber for inviting me to be with you today. I was quite pleased to hear that the Chamber was sponsoring this event. As anyone who knows me - or has heard me speak recently - can tell you, the biofuels industry is a favorite topic of mine. In my view, advanced biofuels offer tremendous promise for helping our nation to bring about a new energy future-one that is cleaner, more sustainable, more affordable,

215

OSTIblog Posts by Kathy Chambers | OSTI, US Dept of Energy, Office of  

Office of Scientific and Technical Information (OSTI)

Kathy Chambers Kathy Chambers Kathy Chambers's picture Senior STI Specialist, Information International Associates, Inc. Enjoy the benefits of LED lighting Source: http://www.flickr.com/photos/uscapitol/6309229615/in/photostream/ Published on Dec 30, 2013 Every day we are bombarded with advertisements in every form and format telling us that our lives will be improved if we buy a particular product because it will save us money, reduce our work effort, save us energy, or benefit the environment. We are justifiably skeptical because we know from experience that if something sounds too good to be true, usually it is. Light-emitting diode (LED) lighting is one of the exceptions. LEDs benefits are so powerful that they seem too good to be true; however, they actually do save us money, reduce our work effort, save us energy and benefit our environment.

216

Scintillator materials containing lanthanum fluorides  

DOE Patents (OSTI)

An improved radiation detector containing a crystalline mixture of LaF.sub.3 and CeF.sub.3 as the scintillator element is disclosed. Scintillators made with from 25% to 99.5% LaF.sub.3 and the remainder CeF.sub.3 have been found to provide a balance of good stopping power, high light yield and short decay constant that is equal to or superior to other known scintillator materials, and which may be processed from natural starting materials containing both rare earth elements. The radiation detectors disclosed are favorably suited for use in general purpose detection and in positron emission tomography.

Moses, William W. (Berkeley, CA)

1991-01-01T23:59:59.000Z

217

Scintillator materials containing lanthanum fluorides  

DOE Patents (OSTI)

An improved radiation detector containing a crystalline mixture of LaF[sub 3] and CeF[sub 3] as the scintillator element is disclosed. Scintillators made with from 25% to 99.5% LaF[sub 3] and the remainder CeF[sub 3] have been found to provide a balance of good stopping power, high light yield and short decay constant that is equal to or superior to other known scintillator materials, and which may be processed from natural starting materials containing both rare earth elements. The radiation detectors disclosed are favorably suited for use in general purpose detection and in positron emission tomography. 2 figures.

Moses, W.W.

1991-05-14T23:59:59.000Z

218

Shipping container for fissile material  

DOE Patents (OSTI)

The present invention is directed to a shipping container for the interstate transportation of enriched uranium materials. The shipping container is comprised of a rigid, high-strength, cylindrical-shaped outer vessel lined with thermal insulation. Disposed inside the thermal insulation and spaced apart from the inner walls of the outer vessel is a rigid, high-strength, cylindrical inner vessel impervious to liquid and gaseous substances and having the inner surfaces coated with a layer of cadmium to prevent nuclear criticality. The cadmium is, in turn, lined with a protective shield of high-density urethane for corrosion and wear protection. 2 figs.

Crowder, H.E.

1984-12-17T23:59:59.000Z

219

Upper Hot Creek Ranch Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Upper Hot Creek Ranch Geothermal Area Upper Hot Creek Ranch Geothermal Area (Redirected from Upper Hot Creek Ranch Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Upper Hot Creek Ranch Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northern Basin and Range Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure

220

Upper bound analysis for drag anchors in soft clay  

E-Print Network (OSTI)

This study presents an upper bound plastic limit analysis for predicting drag anchor trajectory and load capacity. The shank and fluke of the anchor are idealized as simple plates. The failure mechanism involves the motion of the anchor about a...

Kim, Byoung Min

2007-04-25T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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.


221

Wave-forced resuspension of upper Chesapeake Bay muds  

Science Journals Connector (OSTI)

Moored instruments were used to make observations of near bottom currents, waves, temperature, salinity, and turbidity at shallow (3.5 m and 5.5 m depth) dredged sediment disposal sites in upper Chesapeake Bay du...

Lawrence P. Sanford

1994-03-01T23:59:59.000Z

222

Buoyancy of the continental upper mantle Robyn K. Kelly  

E-Print Network (OSTI)

Buoyancy of the continental upper mantle Robyn K. Kelly Department of Geology and Geophysics, MIT). Received 21 June 2002; Revised 11 October 2002; Accepted 15 October 2002; Published 18 February 2003. Kelly

223

Upper-tropospheric moistening in response to anthropogenic warming  

Science Journals Connector (OSTI)

Upper-tropospheric moistening in response to anthropogenic warming 10.1073/pnas.1409659111 Eui-Seok Chung Brian Soden B. J. Sohn Lei Shi aRosenstiel School of Marine and Atmospheric Science, University of Miami, Miami...

Eui-Seok Chung; Brian Soden; B. J. Sohn; Lei Shi

2014-01-01T23:59:59.000Z

224

Improvable upper bounds to the piezoelectric polaron ground state energy  

E-Print Network (OSTI)

It was shown that an infinite sequence of improving non-increasing upper bounds to the ground state energy (GSE) of a slow-moving piezoeletric polaron can be devised.

A. V. Soldatov

2014-12-31T23:59:59.000Z

225

Infiltration in the Upper Ro Chagres Basin, Panama  

Science Journals Connector (OSTI)

Annual runoff hydrographs recorded by the Panama Canal Authority in the upper Ro Chagres...Curve Number (CN) methodology. Specifically, variation curve of the CN was analyzed using rainfall and runoff observati...

Lucas E. Calvo; Fred L. Ogden; Jan M.H. Hendrickx

2005-01-01T23:59:59.000Z

226

Characterization of Sea Turtle Nesting on the Upper Texas Coast  

E-Print Network (OSTI)

Nearly annual record Kemps ridley sea turtle (Lepidochelys kempii) nesting activity on the upper Texas coast (UTC; defined as beaches from Sabine Pass to Matagorda Peninsula), where scientifically verifiable nesting commenced in 2002, has occurred...

Hughes, Christi Lynn

2014-05-06T23:59:59.000Z

227

Small-Chamber Measurements of Chemical-Specific Emission Factors for  

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

Small-Chamber Measurements of Chemical-Specific Emission Factors for Small-Chamber Measurements of Chemical-Specific Emission Factors for Drywall Title Small-Chamber Measurements of Chemical-Specific Emission Factors for Drywall Publication Type Report Year of Publication 2010 Authors Maddalena, Randy L., Marion L. Russell, Moya Melody, and Michael G. Apte Publisher Lawrence Berkeley National Laboratory City Berkeley Abstract Imported drywall installed in U.S. homes is suspected of being a source of odorous and potentially corrosive indoor pollutants. To support an investigation of those building materials by the Consumer Products Safety Commission (CPSC), Lawrence Berkeley National Laboratory (LBNL) measured chemical-specific emission factors for 30 samples of drywall materials. Emission factors are reported for 75 chemicals and 30 different drywall samples encompassing both domestic and imported stock and incorporating natural, synthetic, or mixed gypsum core material. CPSC supplied all drywall materials. First the drywall samples were isolated and conditioned in dedicated chambers, then they were transferred to small chambers where emission testing was performed. Four sampling and analysis methods were utilized to assess (1) volatile organic compounds, (2) low molecular weight carbonyls, (3) volatile sulfur compounds, and (4) reactive sulfur gases. LBNL developed a new method that combines the use of solid phase microextraction (SPME) with small emission chambers to measure the reactive sulfur gases, then extended that technique to measure the full suite of volatile sulfur compounds. The testing procedure and analysis methods are described in detail herein. Emission factors were measured under a single set of controlled environmental conditions. The results are compared graphically for each method and in detailed tables for use in estimating indoor exposure concentrations

228

An upper bound for the proton temperature anisotrophy  

SciTech Connect

This tutorial describes recent research concerning the upper bound on the hot proton temperature anisotropy imposed by wave-particle scattering due to enhanced fluctuations from the electromagnetic proton cyclotron anisotropy instability. This upper bound, which has been observed in both the magnetosheath and the outer magnetosphere, represents a limited closure relation for the equations of anisotropic magnetohydrodynamics. Such a closure relation has the potential to improve the predictive capability of large-scale anisotropic models of the magnetosphere.

Gary, S.P.

1994-11-01T23:59:59.000Z

229

Investigation of long drift chambers for a nucleon-decay detector  

SciTech Connect

The use of long drift chambers for a nucleon-decay detector is discussed as a means of achieving a detector with very fine tracking, but with a modest number of readout channels. Strategies for reducing the attenuation of drifting electrons are considered, particularly the necessity of shaping the electric field to reduce the effects of diffusion and of nearby grounded conductors. Measured results are presented for a chamber with 1 cm drift gap and 50 cm maximum drift distance. The measured attenuation is 12%.

Price, L.E.; Dawson, J.; Ayres, D.; Denis, R.S.

1981-01-01T23:59:59.000Z

230

Construction and test of high precision drift-tube (sMDT) chambers for the ATLAS muon spectrometer  

E-Print Network (OSTI)

For the upgrade of the ATLAS muon spectrometer in March 2014 new muon tracking chambers (sMDT) with drift-tubes of 15 mm diameter, half of the value of the standard ATLAS Monitored Drift-Tubes (MDT) chambers, and 10~$\\mu$m positioning accuracy of the sense wires have been constructed. The new chambers are designed to be fully compatible with the present ATLAS services but, with respect to the previously installed ATLAS MDT chambers, they are assembled in a more compact geometry and they deploy two additional tube layers that provide redundant rack information. The chambers are composed of 8 layers of in total 624 aluminium drift-tubes. The assembly of a chamber is completed within a week. A semi-automatized production line is used for the assembly of the drift-tubes prior to the chamber assembly. The production procedures and the quality control tests of the single components and of the complete chambers will be discussed. The wire position in the completed chambers have been measured by using a coordinate me...

Nowak, Sebastian; Kroha, Hubert; Schwegler, Philipp; Sforza, Federico

2014-01-01T23:59:59.000Z

231

Construction and test of high precision drift-tube (sMDT) chambers for the ATLAS muon spectrometer  

E-Print Network (OSTI)

For the upgrade of the ATLAS muon spectrometer in March 2014 new muon tracking chambers (sMDT) with drift-tubes of 15 mm diameter, half of the value of the standard ATLAS Monitored Drift-Tubes (MDT) chambers, and 10~$\\mu$m positioning accuracy of the sense wires have been constructed. The new chambers are designed to be fully compatible with the present ATLAS services but, with respect to the previously installed ATLAS MDT chambers, they are assembled in a more compact geometry and they deploy two additional tube layers that provide redundant rack information. The chambers are composed of 8 layers of in total 624 aluminium drift-tubes. The assembly of a chamber is completed within a week. A semi-automatized production line is used for the assembly of the drift-tubes prior to the chamber assembly. The production procedures and the quality control tests of the single components and of the complete chambers will be discussed. The wire position in the completed chambers have been measured by using a coordinate measuring machine.

Sebastian Nowak; Oliver Korner; Hubert Kroha; Philipp Schwegler; Federico Sforza

2014-07-01T23:59:59.000Z

232

Multi-gap Resistive Plate Chambers as a Time-of-Flight System for the PHENIX Experiment  

SciTech Connect

In this project a Time-of-Flight detector based on multi-gap resistive plate chambers was built and installed for the PHENIX experiment at RHIC.

Velkovska, Julia [Vanderbilt University] [Vanderbilt University

2013-12-08T23:59:59.000Z

233

Dynamics of neutralizing electrons during the focusing of intense heavy ions beams inside a heavy fusion reactor chamber  

E-Print Network (OSTI)

beams inside a heavy ion fusion reactor chamber * Agustin F.efficiency of a Heavy Ion Fusion reactor heavily depends on

Lifschitz, Agustin F.; Maynard, Gilles; Vay, Jean-Luc; Lenglet, Andrian

2006-01-01T23:59:59.000Z

234

IRAQ SHELL MAY CONTAIN SARIN  

Science Journals Connector (OSTI)

A155-MM ARTILLERY SHELL said to contain the nerve agents sarin and rigged as a roadside bomb exploded near Baghdad International Airport on May 15. The explosion caused only minor injuries and didn't contaminated the blast area. It has, however, raised ...

LOIS EMBER

2004-05-24T23:59:59.000Z

235

Beyond Density: Measuring Neighborhood Form in New England's Upper Connecticut River Valley  

E-Print Network (OSTI)

in New Englands Upper Connecticut River Valley by Peterin New Englands Upper Connecticut River Valley by Peterof New Englands Upper Connecticut River Valley encompassing

Owens, Peter Marshall

2005-01-01T23:59:59.000Z

236

Oxygen sensor for monitoring gas mixtures containing hydrocarbons  

DOE Patents (OSTI)

A gas sensor measures O.sub.2 content of a reformable monitored gas containing hydrocarbons H.sub.2 O and/or CO.sub.2, preferably in association with an electrochemical power generation system. The gas sensor has a housing communicating with the monitored gas environment and carries the monitored gas through an integral catalytic hydrocarbon reforming chamber containing a reforming catalyst, and over a solid electrolyte electrochemical cell used for sensing purposes. The electrochemical cell includes a solid electrolyte between a sensor electrode that is exposed to the monitored gas, and a reference electrode that is isolated in the housing from the monitored gas and is exposed to a reference gas environment. A heating element is also provided in heat transfer communication with the gas sensor. A circuit that can include controls operable to adjust operations via valves or the like is connected between the sensor electrode and the reference electrode to process the electrical signal developed by the electrochemical cell. The electrical signal varies as a measure of the equilibrium oxygen partial pressure of the monitored gas. Signal noise is effectively reduced by maintaining a constant temperature in the area of the electrochemical cell and providing a monitored gas at chemical equilibria when contacting the electrochemical cell. The output gas from the electrochemical cell of the sensor is fed back into the conduits of the power generating system.

Ruka, Roswell J. (Pittsburgh, PA); Basel, Richard A. (Pittsburgh, PA)

1996-01-01T23:59:59.000Z

237

Oxygen sensor for monitoring gas mixtures containing hydrocarbons  

DOE Patents (OSTI)

A gas sensor measures O{sub 2} content of a reformable monitored gas containing hydrocarbons, H{sub 2}O and/or CO{sub 2}, preferably in association with an electrochemical power generation system. The gas sensor has a housing communicating with the monitored gas environment and carries the monitored gas through an integral catalytic hydrocarbon reforming chamber containing a reforming catalyst, and over a solid electrolyte electrochemical cell used for sensing purposes. The electrochemical cell includes a solid electrolyte between a sensor electrode that is exposed to the monitored gas, and a reference electrode that is isolated in the housing from the monitored gas and is exposed to a reference gas environment. A heating element is also provided in heat transfer communication with the gas sensor. A circuit that can include controls operable to adjust operations via valves or the like is connected between the sensor electrode and the reference electrode to process the electrical signal developed by the electrochemical cell. The electrical signal varies as a measure of the equilibrium oxygen partial pressure of the monitored gas. Signal noise is effectively reduced by maintaining a constant temperature in the area of the electrochemical cell and providing a monitored gas at chemical equilibria when contacting the electrochemical cell. The output gas from the electrochemical cell of the sensor is fed back into the conduits of the power generating system. 4 figs.

Ruka, R.J.; Basel, R.A.

1996-03-12T23:59:59.000Z

238

Depositional environments and reservoir properties of the upper Queen Formation, Concho Bluff and Concho Bluff North fields, Midland basin, Texas  

SciTech Connect

The upper Queen Formation (Upper Permian) in Concho Bluff and Concho Bluff North fields (Crane, Upton, and Ector counties, Texas) consists of four thick (6-11 m) clastic members separated by evaporite members, and contains several major sandstone reservoirs. A study of cores and logs from the upper Queen was done to determine its depositional environments and the properties of its sandstone reservoirs. Four facies are present in the upper Queen. Facies 1 consists of planar- and wavy-laminated fine and very fine sandstones and silty sandstones deposited in fluvial sandflats and delta-plains. Facies 2 consists of wavy-laminated siltstones and haloturbated mudstones with anhydrite nodules deposited in subaqueous prodelta environments and subaerial saline mudflats. Facies 3 consists of well-sorted fine to very fine sandstones with horizontal and inclined planar laminae deposited in eolian sand sheets. Facies 4 consists of massive to laminated halite and anhydrite deposited in hypersaline playas. The vertical sequence of these facies indicates that the upper Queen was deposited during four cycles of fan-delta progradation into and retreat from coastal-plain playas during a sea level lowstand in the Midland basin. The sandstones of the fluvial sandflat and eolian sand-sheet facies constitute the reservoirs of the upper Queen in the fields. The average cumulative thickness of these facies is 8 m, and the fields average 16% porosity and 40-50 md of permeability. The remaining facies are all nonproductive with averagge porosities of less than 10% and average permeabilities of less than 1 md.

Mazzullo, J.; Newsom, D.; Harper, J.; McKone, C.; Price, B. (Texas A and M Univ., College Station (United States))

1992-04-01T23:59:59.000Z

239

Benthic Assemblage Variability in the Upper San Francisco Estuary: A 27-Year Retrospective  

E-Print Network (OSTI)

and sediments along a salinity gradient in the upper Forthalong estuarine salinity gradients. Journal of Marinestations located along a salinity gradient in the upper San

Peterson, Heather A; Vayssieres, Marc

2010-01-01T23:59:59.000Z

240

Summary - ARROW-PAK Container  

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

Carlsbad, NM Carlsbad, NM EM Project: WIPP ETR Report Date: August 2007 ETR-9 United States Department of Energy Office of Environmental Management (DOE-EM) External Technical Review of the ARROW-PAK Container Why DOE-EM Did This Review The Waste Isolation Pilot Plant (WIPP) facility, located in New Mexico, is the first and only operating U.S. deep geologic repository designed for the permanent disposal of defense-related transuranic (TRU) waste. The WIPP facility provides underground disposal in a 2,000-foot- thick (610-meter) stable salt formation. Some of the waste destined for WIPP cannot be shipped in the existing approved shipping containers because it has the potential to generate hydrogen gas that exceeds the limits set by the Nuclear Regulatory Commission (NRC).

Note: This page contains sample records for the topic "upper containment chamber" 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.


241

Experiments with a pressure-driven Stirling refrigerator with flexible chambers  

Science Journals Connector (OSTI)

We report on the design and experimental testing of a Stirling refrigerator that uses air as the working fluid and where the conventional piston-cylinder assemblies are replaced by pressure-driven flexible chambers. The two chambers are periodically compressed by pneumatic actuators resulting in airflow through the regenerator and in a net temperature difference between the chambers. An experimental setup is used to investigate the performance of the refrigerator under different operating conditions with particular attention to actuation frequencies driving pressure differences and phase angles between the two inputs. The time constant of the temperature difference between the two chambers is determined and the temperature difference is measured as a function of the system parameters. The results of several tests conducted under different operating conditions show that the refrigerating effect is very robust and allows good performance even for modulated inputs. The frequency response is radically different from that of a traditional motion-driven device. This work suggests that mechanical to thermal energy conversion devices based on this principle can be successfully powered by human motion.

Patrick McFarlane; Jonathan Suire; Mihir Sen

2014-01-01T23:59:59.000Z

242

IFE THICK LIQUID WALL CHAMBER DYNAMICS: GOVERNING MECHANISMS AND MODELING AND  

E-Print Network (OSTI)

fluid! led to the HYLIFE-II design.7 The most recent integrated design based on a TLW chamber, a heavy guide future analysis and research and devel- opment efforts. KEYWORDS: inertial fusion energy, liquid to the 1970s ~Refs. 1, 2, and 3!. The first detailed conceptual design work was carried out at Lawrence

Raffray, A. René

243

Modelling of e-cloud build-up in grooved vacuum chambers usingPOSINST  

SciTech Connect

Use of grooved vacuum chambers have been suggested as a wayto limitelectron cloud accumulation in the ILC-DR. We report onsimulations carried out using an augmented version of POSINST, accountingfor e-cloud dynamics in the presence of grooves, and make contact withprevious estimates of an effective secondary electron yield for groovedsurfaces.

Venturini, Marco; Celata, C.; Furman, Miguel; Vay, Jean-Luc; Pivi, Mauro

2007-06-29T23:59:59.000Z

244

Numerical simulation of detonation processes in a variable cross-section chamber  

E-Print Network (OSTI)

Numerical simulation of detonation processes in a variable cross-section chamber H Y Fan and F K Lu for publication on 8 November 2007. DOI: 10.1243/09544100JAERO272 Abstract: The detonation processes occurring mechanism is used. Two detonation cases are simulated, corresponding to initiation from the closed, left end

Texas at Arlington, University of

245

Design and optimization of 6li neutron-capture pulse mode ion chamber  

E-Print Network (OSTI)

The purpose of this research is to design and optimize the performance of a unique, inexpensive 6Li neutron-capture pulse-mode ion chamber (LiPMIC) for neutron detection that overcomes the fill-gas contamination stemming from outgas of detector...

Chung, Kiwhan

2009-05-15T23:59:59.000Z

246

October 24, 2001 1. Remaining Action Items on Dry Chamber Wall  

E-Print Network (OSTI)

of Simplified Assumption Used to Estimate Temporal Distribution of Energy Depositions Photons Debris Ions Time10ns 0.2µs 1µs 2.5µs Fast Ions Energy Deposition Temporal Distribution of Energy Depositions from Ions for Direct Drive Spectra and Chamber Radius of 6.5 m Simplified Temporal Distribution of Energy Depositions

Raffray, A. René

247

On the intermittency and crystallization mechanisms of sub-seafloor magma chambers  

Science Journals Connector (OSTI)

......that the overall pressure in the magma storage zone is not sufficient to upwell into...magma in the chamber, and the convecting seawater in the permeable surface rocks. Thicknesses...to a hydrothermal boundary at or near seawater temperature (O'C), the layer of 'plated......

C. R. B. Lister

1983-05-01T23:59:59.000Z

248

First limit from a surface run of a 10 liter Dark Matter Time Projection Chamber  

E-Print Network (OSTI)

A 10 liter prototype Dark Matter Time Projection Chamber (DMTPC) is operated on the surface of the earth at 75 Torr using carbon-tetrafluoride (CF4) as a target material to obtain a 24.57 gram-day exposure. A limit is set ...

Caldwell, Thomas S., Jr

2009-01-01T23:59:59.000Z

249

A Diffusion Cloud Chamber Study of Very Slow Mesons. II. Beta Decay of the Muon  

DOE R&D Accomplishments (OSTI)

The spectrum of electrons arising from the decay of the negative mu meson has been determined. The muons are arrested in the gas of a high pressure hydrogen filled diffusion cloud chamber. The momenta of the decay electrons are determined from their curvature in a magnetic field of 7750 gauss. The spectrum of 415 electrons has been analyzed according to the theory of Michel.

Lederman, L. M.; Sargent, C. P.; Rinehart, M.; Rogers, K.

1955-03-00T23:59:59.000Z

250

A model for the emergence of pillars, walls and royal chambers in termite nests  

E-Print Network (OSTI)

A model for the emergence of pillars, walls and royal chambers in termite nests Eric Bonabeau1, 31062 Toulouse Ce¨ dex, France A simple model of the emergence of pillars in termite nests by Deneubourg construction modi¢es current building conditions, we hypothesize that nest complexity can result from

Theraulaz, Guy

251

Automation of Evaporation Chamber for International Space Station CONTROL ALGORITHMFUNNEL VIEW  

E-Print Network (OSTI)

Automation of Evaporation Chamber for International Space Station MOTIVATION DIAL CONTROL are as shown. The direction of fluid/gas flow is indicated by the arrows. Our team would like to acknowledge the Canadian Space Agency and U of T Thermal Kinetic Lab for their contributions to the project. Gas Fluid

252

Contained Energy | Open Energy Information  

Open Energy Info (EERE)

Contained Energy Contained Energy Jump to: navigation, search Name Contained Energy Address Jalan Benda Raya 45 Place Jakarta Zip 12560 Sector Bioenergy, Buildings, Efficiency, Hydro, Ocean, Renewable Energy, Services, Solar, Wind energy Year founded 2004 Number of employees 11-50 Company Type For Profit Phone number +62816858906 Website http://www.containedenergy.com Coordinates -6.2746183702525°, 106.81569099426° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":-6.2746183702525,"lon":106.81569099426,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

253

arXiv:astro-ph/0503398v117Mar2005 Development of Bubble Chambers With Enhanced Stability and Sensitivity to  

E-Print Network (OSTI)

arXiv:astro-ph/0503398v117Mar2005 Development of Bubble Chambers With Enhanced Stability Fermi National Accelerator Laboratory, Batavia, IL, USA The viability of using a Bubble Chamber for rare stability in such a detector are described. Results from prototype trials indicate that sensitivity to low

Collar, Juan I.

254

Monte Carlo calculations for reference dosimetry of electron beams with the PTW Roos and NE2571 ion chambers  

SciTech Connect

Purpose: To investigate recommendations for reference dosimetry of electron beams and gradient effects for the NE2571 chamber and to provide beam quality conversion factors using Monte Carlo simulations of the PTW Roos and NE2571 ion chambers. Methods: The EGSnrc code system is used to calculate the absorbed dose-to-water and the dose to the gas in fully modeled ion chambers as a function of depth in water. Electron beams are modeled using realistic accelerator simulations as well as beams modeled as collimated point sources from realistic electron beam spectra or monoenergetic electrons. Beam quality conversion factors are calculated with ratios of the doses to water and to the air in the ion chamber in electron beams and a cobalt-60 reference field. The overall ion chamber correction factor is studied using calculations of water-to-air stopping power ratios. Results: The use of an effective point of measurement shift of 1.55 mm from the front face of the PTW Roos chamber, which places the point of measurement inside the chamber cavity, minimizes the difference betweenR{sub 50}, the beam quality specifier, calculated from chamber simulations compared to that obtained using depth-dose calculations in water. A similar shift minimizes the variation of the overall ion chamber correction factor with depth to the practical range and reduces the root-mean-square deviation of a fit to calculated beam quality conversion factors at the reference depth as a function of R{sub 50}. Similarly, an upstream shift of 0.34 r{sub cav} allows a more accurate determination of R{sub 50} from NE2571 chamber calculations and reduces the variation of the overall ion chamber correction factor with depth. The determination of the gradient correction using a shift of 0.22 r{sub cav} optimizes the root-mean-square deviation of a fit to calculated beam quality conversion factors if all beams investigated are considered. However, if only clinical beams are considered, a good fit to results for beam quality conversion factors is obtained without explicitly correcting for gradient effects. The inadequacy of R{sub 50} to uniquely specify beam quality for the accurate selection of k{sub Q} factors is discussed. Systematic uncertainties in beam quality conversion factors are analyzed for the NE2571 chamber and amount to between 0.4% and 1.2% depending on assumptions used. Conclusions: The calculated beam quality conversion factors for the PTW Roos chamber obtained here are in good agreement with literature data. These results characterize the use of an NE2571 ion chamber for reference dosimetry of electron beams even in low-energy beams.

Muir, B. R., E-mail: bmuir@physics.carleton.ca; Rogers, D. W. O., E-mail: drogers@physics.carleton.ca [Physics Department, Carleton Laboratory for Radiotherapy Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada)] [Physics Department, Carleton Laboratory for Radiotherapy Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada)

2013-12-15T23:59:59.000Z

255

Radiative Heating of the ISCCP Upper Level Cloud Regimes and its Impact on the Large-scale Tropical Circulation  

SciTech Connect

Radiative heating profiles of the International Satellite Cloud Climatology Project (ISCCP) cloud regimes (or weather states) were estimated by matching ISCCP observations with radiative properties derived from cloud radar and lidar measurements from the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) sites at Manus, Papua New Guinea, and Darwin, Australia. Focus was placed on the ISCCP cloud regimes containing the majority of upper level clouds in the tropics, i.e., mesoscale convective systems (MCSs), deep cumulonimbus with cirrus, mixed shallow and deep convection, and thin cirrus. At upper levels, these regimes have average maximum cloud occurrences ranging from 30% to 55% near 12 km with variations depending on the location and cloud regime. The resulting radiative heating profiles have maxima of approximately 1 K/day near 12 km, with equal heating contributions from the longwave and shortwave components. Upper level minima occur near 15 km, with the MCS regime showing the strongest cooling of 0.2 K/day and the thin cirrus showing no cooling. The gradient of upper level heating ranges from 0.2 to 0.4 K/(day?km), with the most convectively active regimes (i.e., MCSs and deep cumulonimbus with cirrus) having the largest gradient. When the above heating profiles were applied to the 25-year ISCCP data set, the tropics-wide average profile has a radiative heating maximum of 0.45Kday-1 near 250 hPa. Column-integrated radiative heating of upper level cloud accounts for about 20% of the latent heating estimated by the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR). The ISCCP radiative heating of tropical upper level cloud only slightly modifies the response of an idealized primitive equation model forced with the tropics-wide TRMM PR latent heating, which suggests that the impact of upper level cloud is more important to large-scale tropical circulation variations because of convective feedbacks rather than direct forcing by the cloud radiative heating profiles. However, the height of the radiative heating maxima and gradient of the heating profiles are important to determine the sign and patterns of the horizontal circulation anomaly driven by radiative heating at upper levels.

Li, Wei; Schumacher, Courtney; McFarlane, Sally A.

2013-01-31T23:59:59.000Z

256

LS-266 OPTIMIZATION OF FOUR-BUTTON BEAM POSITION MONITOR CONFIGURATION FOR SMALL-GAP VACUUM CHAMBERS  

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

LS-266 LS-266 OPTIMIZATION OF FOUR-BUTTON BEAM POSITION MONITOR CONFIGURATION FOR SMALL-GAP VACUUM CHAMBERS S. H. Kim March 27, 1998 Summary - Induced charges on a four-button beam position monitor (BPM) system attached on a beam chamber of narrow rectangular cross sections are calculated as a 2-D electrostatic problem of image charges. The calculation shows that for a narrow chamber of width/height (2w/2h) >> 1, over 90% of the induced charges are distributed within a distance of 2h from the charged beam position in the direction of the chamber width. Therefore, a four-button system with a button diameter of (2 ~ 2.5)h and no button offset from the beam position is the most efficient configuration. The four-button BPMs used for 8-mm and 5-mm chambers in the APS have relatively low sensitivities because the button locations are outside

257

Split ring containment attachment device  

DOE Patents (OSTI)

A containment attachment device 10 for operatively connecting a glovebag 200 to plastic sheeting 100 covering hazardous material. The device 10 includes an inner split ring member 20 connected on one end 22 to a middle ring member 30 wherein the free end 21 of the split ring member 20 is inserted through a slit 101 in the plastic sheeting 100 to captively engage a generally circular portion of the plastic sheeting 100. A collar potion 41 having an outer ring portion 42 is provided with fastening means 51 for securing the device 10 together wherein the glovebag 200 is operatively connected to the collar portion 41.

Sammel, Alfred G. (Pittsburgh, PA)

1996-01-01T23:59:59.000Z

258

Upper Hot Creek Ranch Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Upper Hot Creek Ranch Geothermal Area Upper Hot Creek Ranch Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Upper Hot Creek Ranch Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northern Basin and Range Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed.

259

Processing of solid mixed waste containing radioactive and hazardous materials  

DOE Patents (OSTI)

Apparatus for the continuous heating and melting of a solid mixed waste bearing radioactive and hazardous materials to form separate metallic, slag and gaseous phases for producing compact forms of the waste material to facilitate disposal includes a copper split water-cooled (cold) crucible as a reaction vessel for receiving the waste material. The waste material is heated by means of the combination of a plasma torch directed into the open upper portion of the cold crucible and an electromagnetic flux produced by induction coils disposed about the crucible which is transparent to electromagnetic fields. A metallic phase of the waste material is formed in a lower portion of the crucible and is removed in the form of a compact ingot suitable for recycling and further processing. A glass-like, non-metallic slag phase containing radioactive elements is also formed in the crucible and flows out of the open upper portion of the crucible into a slag ingot mold for disposal. The decomposition products of the organic and toxic materials are incinerated and converted to environmentally safe gases in the melter. 6 figs.

Gotovchikov, V.T.; Ivanov, A.V.; Filippov, E.A.

1998-05-12T23:59:59.000Z

260

MODELING THE FATE AND TRANSPORT OF ATRAZINE IN THE UPPER CHESAPEAKE BAY  

E-Print Network (OSTI)

for agrochemicals in the Upper Chesapeake Bay. Keywords: Chesapeake Bay, hydrodynamic model, atrazine, photolysis

Frei, Allan

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


261

Large panel design for containment air baffle  

DOE Patents (OSTI)

The movable air baffle shield means in accordance with the present invention provides an efficient method of cooling the space surrounding the containment vessel while also providing the capability of being moved away from the containment vessel during inspection. The containment apparatus comprises a generally cylindrical sealed containment vessel for containing at least a portion of a nuclear power generation plant, a disparate shield building surrounding and housing the containment vessel therein and spaced outwardly thereof so as to form an air annulus in the space between the shield building and the containment vessel, a shield baffle means positioned in the air annulus around at least a portion of the sides of the containment vessel providing a coolant path between the baffle means and the containment vessel to permit cooling of the containment vessel by air, the shield baffle means being movable to afford access to the containment vessel.

Orr, Richard S. (Pittsburgh, PA)

1992-01-01T23:59:59.000Z

262

Addendum to the Technical Design Report for the Upgrade of the ALICE Time Projection Chamber  

E-Print Network (OSTI)

This is the addendum to the TDR of the upgrade of the ALICE Time Projection Chamber (CERN-LHCC-2013-020 ; ALICE-TDR-016). The key objective of the upgrade is the replacement of the present MWPC-based readout chambers by detectors that allow continuous operation without active ion gating. In the TDR, we propose a solution that employs stacks of four Gas Electron Multipliers (GEMs) and demonstrate that it fulfills the design specifications, in particular in terms of intrinsic position resolution, energy resolution, and ion backflow. In this document we demonstrate with additional results from both detector R&D and simulations that the technological solution chosen in the TDR has sufficient safety margin for a successful campaign with the upgraded detector in RUN 3 and beyond.

The ALICE Collaboration

2015-01-01T23:59:59.000Z

263

Portable chamber for the study of UHV prepared electrochemical interfaces by hard x-ray diffraction  

SciTech Connect

We report on a new electrochemical cell setup, combined with a portable UHV chamber, for in situ x-ray diffraction using synchrotron radiation. In contrast to more traditional electrochemical sample preparation schemes, atomically clean and well-ordered surfaces are routinely prepared by UHV methods, even in the case of reactive elements or alloys. Samples can be transferred from larger UHV systems into the portable chamber without exposure to ambient air. They can then be studied successively in UHV, in controlled gas atmospheres, and in contact with electrolyte solutions under applied electrochemical potential. The electrochemical setup employs a droplet geometry, which guarantees good electrochemical conditions during in situ x-ray measurements combined with voltammetry. We present first experimental results of Cu deposition on GaAs(001) and on freshly produced nanometric Pd(001) islands on Cu{sub 0.83}Pd{sub 0.17}(001), respectively.

Renner, Frank Uwe; Gruender, Yvonne; Zegenhagen, Joerg [European Synchrotron Radiation Facility, BP 220, 38043 Grenoble (France)

2007-03-15T23:59:59.000Z

264

Acoustic studies for alpha background rejection in dark matter bubble chamber detectors  

SciTech Connect

COUPP (Chicagoland Observatory for Underground Particle Physics) is an experiment with bubble chambers able to detect dark matter directly either with Spin-Dependent or with Spin-Independent interactions. The target material is a superheated liquid (usually CF3I) that can be bubble nucleated due to nuclear recoils produced by elastic collisions of dark matter particles. The bubble growth inside the chamber is accompanied with an acoustic signature. The acoustic technique has been successfully used to have a good alpha discrimination (about 99%). In this paper, we present different studies and results related with the characterization of the acoustic properties of the detector and the different phenomena involved in the acoustic measurements of the bubble growth, such as sound generation, sound transmission and optimization of piezoelectric transducers.

Bou-Cabo, M.; Felis, I.; Ardid, M.; Collaboration: COUPP Collaboration

2013-08-08T23:59:59.000Z

265

NETL: Ambient Monitoring - Upper Ohio River Valley Project  

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

Upper Ohio River Valley Project Upper Ohio River Valley Project In cooperation with key stakeholders including EPA, local and state environmental agencies, industry, and academia, the U.S. Department of Energy (DOE) has established the Upper Ohio River Valley Project (UORVP), a network for monitoring and characterizing PM2.5 in the Upper Ohio River Valley. This region was chosen because it has a high density of coal-fired electric utilities, heavy industries (e.g. coke and steel making), light industry, and transportation emission sources. It is also ideally situated to serve as a platform for the study of interstate pollution transport issues. This region, with its unique topography (hills and river valleys) as well as a good mix of urban and rural areas, has a high population of elderly who are susceptible to health impacts of fine particulate as well as other related environmental issues (e.g., acid rain, Hg deposition, ozone). A world-class medical research/university system is also located in the region, which will facilitate the subsequent use of the air quality data in studies of PM2.5 health effects.

266

Upper Midwest Food, Fuel and Fiber Network Tour  

E-Print Network (OSTI)

2nd Annual Upper Midwest Food, Fuel and Fiber Network Tour Aug. 31 ­ Sept. 2, 2010 #12;Tuesday, fuel, and fiber research. 8:15 p.m. Adjourn to University Plaza Hotel www.uphwl.com #12;Wednesday.m. Controlled Sub-Surface Drainage Dr. Eileen Kladivko, Department of Agronomy 2:00 p.m. Algae Wheel (Sewage

267

Scales and Effects of Fluid Flow in the Upper Crust  

Science Journals Connector (OSTI)

...subsurface reservoirs. The tapping of these reservoirs is the basis...drives the rock cycle and...and a soil porosity of 25...variations in permeability focus or...fracture porosity ofigneous rocks. Fluids...oil reservoirs. ModifiedUpper...can modify permeability and topography...

Lawrence M. Cathles III

1990-04-20T23:59:59.000Z

268

Remark on the coherent information saturating its upper bound  

E-Print Network (OSTI)

Coherent information is a useful concept in quantum information theory. It connects with other notions in data processing. In this short remark, we discuss the coherent information saturating its upper bound. A necessary and sufficient condition for this saturation is derived.

Lin Zhang

2012-08-25T23:59:59.000Z

269

An unexpected cooling effect in Saturn's upper atmosphere  

Science Journals Connector (OSTI)

... The upper atmospheres of the four Solar System giant planets exhibit high temperatures that cannot be explained by the absorption of sunlight ... the absorption of sunlight. In the case of Saturn the temperatures predicted by models of solar heating are ?200?K, compared to temperatures of ?400?K observed independently in ...

C. G. A. Smith; A. D. Aylward; G. H. Millward; S. Miller; L. E. Moore

2007-01-25T23:59:59.000Z

270

Scales and Effects of Fluid Flow in the Upper Crust  

Science Journals Connector (OSTI)

...of these reservoirs is the basis...drives the rock cycle and...and a soil porosity of 25...variations in permeability focus or...Mesozoic sandstones, siltstones...fracture porosity ofigneous rocks. Fluids...oil reservoirs. ModifiedUpper...can modify permeability and topography...and water quality), and at...fracture porosity and permeability...

Lawrence M. Cathles III

1990-04-20T23:59:59.000Z

271

Scales and Effects of Fluid Flow in the Upper Crust  

Science Journals Connector (OSTI)

...of these reservoirs is the basis...drives the rock cycle and...and a soil porosity of 25...variations in permeability focus or...fracture porosity ofigneous rocks. Fluids...oil reservoirs. ModifiedUpper...can modify permeability and topography...and water quality), and at...fracture porosity and permeability...

Lawrence M. Cathles III

1990-04-20T23:59:59.000Z

272

Simulating Sustainability: Conjunctive Land and Water Management in the Upper  

E-Print Network (OSTI)

Simulating Sustainability: Conjunctive Land and Water Management in the Upper Santa Cruz River Water Issue: Introduction and Context This research project addresses a chronic water management issue in Arizona: management and allocation of water supplies in areas undergoing rapid growth and land use changes

Fay, Noah

273

Coaching the Brass Quintet: Developing Better Student Musicians Through Chamber Music  

E-Print Network (OSTI)

students match articulation in order to facilitate ease and clarity in making music. If the students are able to listen and match appropriately, then the amount of time spent making music can be increased. Articulation is a musical device, and can be used... technical, musical, and most importantly extra-musical abilities from a 2 young age. These essential extra-musical skills such as critical self-reflection, pro-active listening, and leadership, are a chamber coachs primary responsibility...

Miller, Albert Edward

2014-05-31T23:59:59.000Z

274

Fail-safe ion chamber errant beam detector tailored for personnel protection  

SciTech Connect

This fail-safe ion chamber system is designed to be part of the personnel safety system (PSS) for the Los Alamos Neutron Scattering Center (LANSCE) at the Los Alamos National Laboratory. Its job is to protect the occupants of the experimental areas from large radiation doses caused by errant beam conditions during beam transport from the Proton Storage Ring (PSR) to the LANSCE neutron spallation target. The worst case beam spill scenario is calculated to result in a personnel exposure of about 0.01 Gys/s (1 rad/s). Although the preferred solution is to increase the bulk shielding between the beam line and the experimental area, the physical dimensions of the site do not permit an adequate amount of shielding to be added. The solution adopted is a layered system of three types of highly reliable detector systems: a current limiter system located in the beam line, a neutron detector system located in the experimental areas, and an ion chamber system located on the walls of the beam line tunnels. The ion chamber system is capable of shutting off the beam in less than 0.5 s, resulting in a worst case personnel exposure of 0.005 Gys (0.5 rad). 4 figs.

Plum, M.A.; Browman, A.A.; Brown, D.; Lee, D.M.; McCabe, C.W.

1989-01-01T23:59:59.000Z

275

Numerical simulations of industrial-scale combustion chamber - LES versus RANS  

Science Journals Connector (OSTI)

In this work we focus on the simulation of the process of biomass syngas combustion in the industrial combustion chamber directly linked with gasification chamber, where this gas is continuously producing from the biomass. Conflicting demands from the engineers to have rapid results and hints how to ensure the best conditions for combustion of this particular fuel and to lower the emission of pollutants, with simultaneously deep view inside the process and its stability motivates us to use both the RANS and LES techniques of turbulence modelling, compare it and take their advantages. We designed and performed series of 3D numerical simulations of both cold flow and combustion in complex geometry of industrial burner. It seems to us that the proper approach for modelling of biomass syngas combustion is steady flamelets model. Simulations performed with RANS closure are used as the initialisation of LES models, but their main goal is to predict the long-time oscillation of pressure and temperature observed in the working combustion chamber. On the other hand the main goal of the simulations with LES closure is to predict the proper level of short-time behaviour of the flame and local phenomena.

Kamil Kwiatkowski; Daniel Jasi?ski; Konrad Bajer

2011-01-01T23:59:59.000Z

276

Contained radiological analytical chemistry module  

DOE Patents (OSTI)

A system which provides analytical determination of a plurality of water chemistry parameters with respect to water samples subject to radiological contamination. The system includes a water sample analyzer disposed within a containment and comprising a sampling section for providing predetermined volumes of samples for analysis; a flow control section for controlling the flow through the system; and a gas analysis section for analyzing samples provided by the sampling system. The sampling section includes a controllable multiple port valve for, in one position, metering out sample of a predetermined volume and for, in a second position, delivering the material sample for analysis. The flow control section includes a regulator valve for reducing the pressure in a portion of the system to provide a low pressure region, and measurement devices located in the low pressure region for measuring sample parameters such as pH and conductivity, at low pressure. The gas analysis section which is of independent utility provides for isolating a small water sample and extracting the dissolved gases therefrom into a small expansion volume wherein the gas pressure and thermoconductivity of the extracted gas are measured.

Barney, David M. (Scotia, NY)

1989-01-01T23:59:59.000Z

277

Contained radiological analytical chemistry module  

DOE Patents (OSTI)

A system which provides analytical determination of a plurality of water chemistry parameters with respect to water samples subject to radiological contamination. The system includes a water sample analyzer disposed within a containment and comprising a sampling section for providing predetermined volumes of samples for analysis; a flow control section for controlling the flow through the system; and a gas analysis section for analyzing samples provided by the sampling system. The sampling section includes a controllable multiple port valve for, in one position, metering out sample of a predetermined volume and for, in a second position, delivering the material sample for analysis. The flow control section includes a regulator valve for reducing the pressure in a portion of the system to provide a low pressure region, and measurement devices located in the low pressure region for measuring sample parameters such as pH and conductivity, at low pressure. The gas analysis section which is of independent utility provides for isolating a small water sample and extracting the dissolved gases therefrom into a small expansion volume wherein the gas pressure and thermoconductivity of the extracted gas are measured.

Barney, David M. (Scotia, NY)

1990-01-01T23:59:59.000Z

278

Syracuse Univesity Test Report On Uptake Factor Resulting From A Dropped Storage Container - Phase II  

SciTech Connect

Under certain circumstances, powder from an accidently dropped container can become airborne and inhaled by people nearby such as those who are moving the containers. The inhaled fine particles can deposit on respiratory tracts and lungs, causing asthma, lung cancer, and other acute respiratory illnesses and chronic symptoms. The objective of this study was to develop a standard procedure to measure the airborne concentrations of different size particles within the vicinity of a dropped container where a significant portion of the contained powder is ejected. Tungsten oxide (WO{sub 3}) was selected in this study to represent relatively heavy powders (7.16 g/cm3 specific gravity for WO{sub 3}). A typical can with the outer dimensions of 4.25 diameter and 4.875 tall was used as the container. The powder was dropped in two different configurations: 1) contained within a can covered by a lid that has a 0.25 diameter hole, and 2) contained within a can without a lid. The packing volume of the powder was 51.4 in3 (842.7 cm{sup 3}) and the target mass was 1936 g. The tests were carried out in a full-scale stainless steel environmental chamber with an interior volume of 852 ft3 (24.1 m3). The chamber system includes an internal recirculation loop with a rectangular air diffuser and 10 variable frequency drive fans to provide a typical room air recirculation flow pattern. Two air filters were installed in the chamber air supply duct and return duct to achieve the required low background particle concentration. The initial chamber air conditions were set at 70F ( 5F) and 50% ( 10%) RH. A supporting frame and releasing device were designed and built to trigger consistently the dropping of the can. The particle sampling inlet was placed 5 ft above the floor and 6 inches laterally away from the cans falling path. Concentrations of particles between 0.5 ?m and 20 ?m were recorded in units of mass and number of particles per unit volume. The data acquisition rate was once every 2 seconds during the first 2 hours. A test procedure was developed and verified. A total of thirty two drop tests were performed, eight in Phase I and twenty four in Phase II, covering variations in dropping height (8 ft or 4 ft from the floor), room air movement (0.25-0.30 m/s or 0.10-0.15 m/s near the ceiling), landing scenario (on a flat plate or a block), and lid condition ( lid hole or no lid). There were ten tests with flat plate and lid hole, ten tests with flat plate no lid and twelve tests with block no lid.

Gao, Zhi; Zhang, Jianshun S.

2012-01-01T23:59:59.000Z

279

Upper Cumberland E M C | Open Energy Information  

Open Energy Info (EERE)

Upper Cumberland E M C Upper Cumberland E M C Place Tennessee Utility Id 19574 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial GSA 1 Commercial Commercial GSA 2 Commercial Commercial GSA 3 Commercial Industrial GSA 1 Industrial Industrial GSA 2 Industrial Industrial GSA 3 Industrial Residential Residential outdoor light(Mercury 175 Watt) Lighting outdoor light(Mercury 400 Watt) Lighting outdoor light(Metal Halide 1000 watt FL) Lighting outdoor light(Metal Halide 250 watt FL) Lighting

280

EIS-0408: Upper Great Plains Wind Energy Programmatic EIS  

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

This EIS, being prepared jointly by DOE's Western Area Power Administration and the Department of the Interiors Fish and Wildlife Service, will evaluate the environmental impacts of wind energy development in Iowa, Minnesota, Montana, Nebraska, North Dakota, and South Dakota Westerns Upper Great Plains customer service region. Western will use the EIS to implement a comprehensive regional program to manage interconnection requests for wind energy projects.

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


281

Flame kernel characterization of laser ignition of natural gasair mixture in a constant volume combustion chamber  

Science Journals Connector (OSTI)

In this paper, laser-induced ignition was investigated for compressed natural gasair mixtures. Experiments were performed in a constant volume combustion chamber, which simulate end of the compression stroke conditions of a SI engine. This chamber simulates the engine combustion chamber conditions except turbulence of airfuel mixture. It has four optical windows at diametrically opposite locations, which are used for laser ignition and optical diagnostics simultaneously. All experiments were conducted at 10bar chamber pressure and 373K chamber temperature. Initial stage of combustion phenomena was visualized by employing Shadowgraphy technique using a high speed CMOS camera. Flame kernel development of the combustible fuelair mixture was investigated under different relative airfuel ratios (?=1.2?1.7) and the images were interrogated for temporal propagation of flame front. Pressure-time history inside the combustion chamber was recorded and analyzed. This data is useful in characterizing the laser ignition of natural gasair mixture and can be used in developing an appropriate laser ignition system for commercial use in SI engines.

Dhananjay Kumar Srivastava; Kewal Dharamshi; Avinash Kumar Agarwal

2011-01-01T23:59:59.000Z

282

Verifying Sensor Response to Difficult Chemicals with a New Test Chamber Concept  

SciTech Connect

In this article we discuss the application of technology innovations to optimize detection of hard-to-measure (less- or semi-volatile) compounds. These chemicals are found all around us: in pesticides and herbicides, the higher boiling polyaromatic hydrocarbons in diesel exhaust, and linked polyurethane foams in products ranging from hiking boots to acoustic ceilings. They appear in low concentrations and evaporate very slowly. These heavier chemicals are rarely measured accurately because they stick to surfaces and sampling equipment and, consequently, are not reliably sampled or delivered to analytical detectors. Its like trying to identify cold, sticky honey by getting it to flow in through a sampling tube to a detector it will hardly move. Honey generally coats out on surfaces and sample lines to the extent that even if it is detected, the amount present is vastly underestimated. Researchers at Pacific Northwest National Laboratory (PNNL) addressed the problem by developing a chamber facility with instrumentation that can overcome the under-reporting of these ubiquitous chemical compounds. The atmospheric chemistry chamber provides a controlled environment in which to certify the accuracy of and conditions under which sensors can best respond to volatile and semi-volatile chemicals. The facility is designed to handle and measure chemicals at the levels at which they are found in nature. Test environments can be created in which atmospheric concentrations are at low part-per-trillion concentrations. These concentrations are equivalent to an herbicide off-gassing from a commercially grown apple. The chamber can be set up to simulate releases ranging from industrial vents with high concentrations to releases from surfaces, soils, and/or vegetation where the concentrations are low.

Maughan, A. D.; Birnbaum, Jerome C.; Probasco, Kathleen M.

2004-06-01T23:59:59.000Z

283

Streamer chamber study of intermediate-energy nuclear collisions with CCD cameras  

SciTech Connect

A system of three charge-coupled device (CCD) cameras has been designed and built to record nuclear collisions in a streamer chamber. This technical development significantly enhances the usefulness of streamer chambers as large solid angle ({approx}4{pi} sr) detectors for exclusive measurements in nuclear physics. The system has been used in an experiment designed to study nearly-central collisions of Nb + Nb at 100 and 180 MeV/nucleon. Computer codes have been developed that significantly reduce the amount of operator intervention in the data analysis. One of the most interesting predictions of fluid-dynamical models and VUU calculations for heavy-ion collisions is the sideward emission of nuclear matter, due to the high compression crated during the collision (Stoe 80, Mol 85). The transverse-momentum flow analysis introduced by Danielewicz and Odyniec (Dan 85) allows to calculate the amount of sideward momentum carried by the emitted fragments, while minimizing the distortions caused by finite-multiplicity effects. This momentum flow analysis has been performed on our 180 MeV/nucleon data. The slope of the mean transverse momentum per nucleon vs. rapidity curve at mid-rapidity, or flow, was found to be 47.0 {plus minus} 11.3 MeV/c/nucleon. In order to compare our results to those obtained from other experiments, scale-invariant transverse momentum, p{sup x}, and rapidity, y, have been introduced (Bal 84). The p{sup x} vs. y curve extracted from our data has been compared with the curves obtained for various systems in streamer chamber plus photographic film (Dan 85, Ren 84) and plastic ball experiments (Dos 85), and the shapes have been found to be very similar. The scale-invariant flow, F, for 180 MeV/nucleon Nb + Nb is 0.16 {plus minus} 0.04.

Angius, S.P.

1987-01-01T23:59:59.000Z

284

Management of unconverted light for the National Ignition Facility target chamber  

SciTech Connect

The NIF target chamber beam dumps must survive high x-ray, laser, ion, and shrapnel exposures without excessive generation of vapors or particulate that will contaminate the final optics debris shields, thereby making the debris shields susceptible to subsequent laser damage. The beam dumps also must be compatible with attaining and maintaining the required target chamber vacuum and must not activate significantly under high neutron fluxes. Finally, they must be developed, fabricated, and maintained for a reasonable cost. The primary challenge for the beam dump is to survive up to 20 J/cm{sup 2} of lpm light and 1 - 2 J/cm{sup 2} of nominally 200 - 350 eV blackbody temperature x rays. Additional threats include target shrapnel, and other contamination issues. Designs which have been evaluated include louvered hot-pressed boron carbide (B{sub 4}C) or stainless steel (SS) panels, in some cases covered with transparent Teflon film, and various combinations of inexpensive low thermal expansion glasses backed by inexpensive absorbing glass. Louvered designs can recondense a significant amount of ablated material that would otherwise escape into the target chamber. Transparent Teflon was evaluated as an alternative way to capture ablated material. The thin Teflon sheet would need to be replaced after each shot since it exhibits both laser damage and considerable x- ray ablation with each shot. Uncontaminated B{sub 4}C, SS, and low thermal expansion glasses have reasonably small x-ray and laser ablation rates, although the glasses begin to fail catastrophically after 100 high fluence shots. Commercially available absorbing glasses require a pre-shield of either Teflon or low thermal expansion glass to prevent serious degradation by the x-ray fluence. Advantages of the hot-pressed B{sub 4}C and SS over glass are their performance against microshrapnel, their relative indifference to contamination, and their ability to be refurbished by aggressive cleaning using CO{sub 2} pellets, glass beads, high pressure water or ultrasonic tanks. In addition the expected replacement rate to avoid catastrophic failure makes the glass option more costly. SS is less expensive, more easily formed into a louver design with high capture efficiency, and otherwise equivalent to B{sub 4}C. Hence, it would be preferred as long as debris shield damage is not substantially greater for SS as compared to damage from an equivalent mass of contamination of B{sub 4}C. If debris shield damage is problematic, the escape of SS could be mitigated by use of a transparent Teflon film. The Teflon film would require increased target chamber pumping and cleaning capability to accommodate the x-ray decomposition products.

Anderson, A. T.; Bletzer, K.; Burnham, A. K.; Dixit, S; Genin, F. Y.; Hibbard, W.; Norton, J.; Scott, J. M.; Whitman, P. K.

1998-07-08T23:59:59.000Z

285

Conceptual design for a fast neutron ionization chamber for fusion reactor plasma diagnostics  

SciTech Connect

A conceptual design for a radiation-hard ``pointing`` fast neutron ionization chamber that is capable of delivering a 1 MHz countrate of T(D,n) events at ITER is given. The detector will use a {approximately}1 cm{sup 3} volume of CO{sub 2} fill gas at 0.1 bar pressure in a 500 V/cm electric field. The pulse widths will be {approximately}10 ns, enabling it to operate in a flux of {approximately} 6 {times} 10{sup 13} DT n/cm{sup 2}/sec. A special collimator design is used, giving an estimated angular resolution of 4.5 degrees HWHM.

Sailor, W.C.; Barnes, C.W.

1994-06-01T23:59:59.000Z

286

Study of the calibration of X-T relation for the BESIII drift chamber  

E-Print Network (OSTI)

This paper introduces the calibration of the time-to-distance relation for the BESIII drift chamber. The parameterization of the time-to-distance relation is presented. The studies of left-right asymmetry and the variation with the entrance angle are performed. The impact of dead channels on the time-to-distance relation is given special attention in order to reduce the shifts of the measured momenta for the tracks passing near dead cells. Finally we present the spatial resolution (123 {\\mu}m) for barrel Bhabha events (|cos{\\theta}|data taken in 2012.

Xiao-Lin Kang; Ling-Hui Wu; Zhi Wu; Tao Luo; Chen Hu; Hai-Xai Wang; Shuang-Shi Fang; Kang-Lin He; Wei-Dong Li; Wei-Guo Li; Ze-Pu Mao; Liang-Liang Wang; Ye Yuan; Yao Zhang

2014-05-14T23:59:59.000Z

287

MicroBooNE: A New Liquid Argon Time Projection Chamber Experiment  

SciTech Connect

Liquid Argon Time Projection Chamber detectors are well suited to study neutrino interactions, and are an intriguing option for future massive detectors capable of measuring the parameters that characterize neutrino oscillations. These detectors combine fine-grained tracking with calorimetry, allowing for excellent imaging and particle identification ability. In this talk the details of the MicroBooNE experiment, a 175 ton LArTPC which will be exposed to Fermilab's Booster Neutrino Beamline starting in 2011, will be presented. The ability of MicroBooNE to differentiate electrons from photons gives the experiment unique capabilities in low energy neutrino interaction measurements.

Soderberg, M.

2009-10-01T23:59:59.000Z

288

DOE SPENT NUCLEAR FUEL DISPOSAL CONTAINER  

SciTech Connect

The DOE Spent Nuclear Fuel Disposal Container (SNF DC) supports the confinement and isolation of waste within the Engineered Barrier System of the Mined Geologic Disposal System (MGDS). Disposal containers are loaded and sealed in the surface waste handling facilities, transferred to the underground through the access mains, and emplaced in emplacement drifts. The DOE Spent Nuclear Fuel Disposal Container provides long term confinement of DOE SNF waste, and withstands the loading, transfer, emplacement, and retrieval loads and environments. The DOE SNF Disposal Containers provide containment of waste for a designated period of time, and limit radionuclide release thereafter. The disposal containers maintain the waste in a designated configuration, withstand maximum handling and rockfall loads, limit the individual waste canister temperatures after emplacement. The disposal containers also limit the introduction of moderator into the disposal container during the criticality control period, resist corrosion in the expected repository environment, and provide complete or limited containment of waste in the event of an accident. Multiple disposal container designs may be needed to accommodate the expected range of DOE Spent Nuclear Fuel. The disposal container will include outer and inner barrier walls and outer and inner barrier lids. Exterior labels will identify the disposal container and contents. Differing metal barriers will support the design philosophy of defense in depth. The use of materials with different failure mechanisms prevents a single mode failure from breaching the waste package. The corrosion-resistant inner barrier and inner barrier lid will be constructed of a high-nickel alloy and the corrosion-allowance outer barrier and outer barrier lid will be made of carbon steel. The DOE Spent Nuclear Fuel Disposal Containers interface with the emplacement drift environment by transferring heat from the waste to the external environment and by protecting the DOE waste canisters and their contents from damage/degradation by the external environment. The disposal containers also interface with the SNF by limiting access of moderator and oxidizing agents to the waste. The disposal containers interface with the Ex-Container System's emplacement drift disposal container supports. The disposal containers interface with the Canister Transfer System, Waste Emplacement System, Disposal Container Handling System, and Waste Package Remediation System during loading, handling, transfer, emplacement and remediation of the disposal container.

F. Habashi

1998-06-26T23:59:59.000Z

289

E-Print Network 3.0 - amputated upper limb Sample Search Results  

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

daily tasks 7-9. Currently, rotation of upper-limb prostheses... of a small permanent magnet into the distal residual bone of an upper-limb amputee 9. The magnet...

290

Response of upper ocean currents to typhoons at two ADCP moorings west of the Luzon Strait  

Science Journals Connector (OSTI)

We deployed two ADCP mooring systems west of the Luzon Strait in August 2008, and measured the upper ocean currents at high frequency. Two typhoons passed over ... , we studied the response of the upper ocean to ...

Fei Chen ??; Yan Du ??; Li Yan ??

2010-09-01T23:59:59.000Z

291

A Note on Amphibians and Reptiles in the Upper Ro Chagres Basin, Panama  

Science Journals Connector (OSTI)

Twenty-nine amphibians and six reptiles were recorded at a site in the upper Ro Chagres basin at the confluence of the Ro Chagrecito with the upper Ro Chagres. Most of them are assumed to be the common spec...

Roberta Ibez D.

2005-01-01T23:59:59.000Z

292

Self-adjustable supplemental support system for a cylindrical container in a housing  

DOE Patents (OSTI)

A self-adjustable supplementary support system for a cylindrical container coaxially disposed in a cylindrical housing by upper flanged supports has a plurality of outwardly extending bracket units on the external surface of the container which coact with inwardly extending resiliently outwardly extending bracket units on the inner wall of the cylindrical housing. The bracket units have flanges which form a concave surface that seats on support bars, attached by links to torsion bars that are secured to ring segments annularly spaced about the inner wall of the cylindrical housing and the bracket units and support bars coact with each other to radially position and support the container in the housing during movement of the two components from a vertical to a horizontal position, and during transportation of the same.

Blaushild, Ronald M. (Wilkinsburg, PA)

1987-01-01T23:59:59.000Z

293

Self-adjustable supplemental support system for a cylindrical container in a housing  

DOE Patents (OSTI)

A self-adjustable supplementary support system for a cylindrical container coaxially disposed in a cylindrical housing by upper flanged supports has a plurality of outwardly extending bracket units on the external surface of the container which coact with inwardly extending resiliently outwardly extending bracket units on the inner wall of the cylindrical housing. The bracket units have flanges which form a concave surface that seats on support bars, attached by links to torsion bars that are secured to ring segments annularly spaced about the inner wall of the cylindrical housing and the bracket units and support bars coact with each other to radially position and support the container in the housing during movement of the two components from a vertical to a horizontal position, and during transportation of the same. 14 figs.

Blaushild, R.M.

1987-01-30T23:59:59.000Z

294

A patient-specific quality assurance study on absolute dose verification using ionization chambers of different volumes in RapidArc treatments  

SciTech Connect

The recalculation of 1 fraction from a patient treatment plan on a phantom and subsequent measurements have become the norms for measurement-based verification, which combines the quality assurance recommendations that deal with the treatment planning system and the beam delivery system. This type of evaluation has prompted attention to measurement equipment and techniques. Ionization chambers are considered the gold standard because of their precision, availability, and relative ease of use. This study evaluates and compares 5 different ionization chambers: phantom combinations for verification in routine patient-specific quality assurance of RapidArc treatments. Fifteen different RapidArc plans conforming to the clinical standards were selected for the study. Verification plans were then created for each treatment plan with different chamber-phantom combinations scanned by computed tomography. This includes Medtec intensity modulated radiation therapy (IMRT) phantom with micro-ionization chamber (0.007 cm{sup 3}) and pinpoint chamber (0.015 cm{sup 3}), PTW-Octavius phantom with semiflex chamber (0.125 cm{sup 3}) and 2D array (0.125 cm{sup 3}), and indigenously made Circular wax phantom with 0.6 cm{sup 3} chamber. The measured isocenter absolute dose was compared with the treatment planning system (TPS) plan. The micro-ionization chamber shows more deviations when compared with semiflex and 0.6 cm{sup 3} with a maximum variation of -4.76%, -1.49%, and 2.23% for micro-ionization, semiflex, and farmer chambers, respectively. The positive variations indicate that the chamber with larger volume overestimates. Farmer chamber shows higher deviation when compared with 0.125 cm{sup 3}. In general the deviation was found to be <1% with the semiflex and farmer chambers. A maximum variation of 2% was observed for the 0.007 cm{sup 3} ionization chamber, except in a few cases. Pinpoint chamber underestimates the calculated isocenter dose by a maximum of 4.8%. Absolute dose measurements using the semiflex ionization chamber with intermediate volume (0.125 cm{sup 3}) shows good agreement with the TPS calculated among the detectors used in this study. Positioning is very important when using smaller volume chambers because they are more sensitive to geometrical errors within the treatment fields. It is also suggested to average the dose over the sensitive volume for larger-volume chambers. The ionization chamber-phantom combinations used in this study can be used interchangeably for routine RapidArc patient-specific quality assurance with a satisfactory accuracy for clinical practice.

Syam Kumar, S.A., E-mail: skppm@rediffmail.com [Department of Medical Physics, Cancer Institute (WIA), Adyar, Chennai, Tamil Nadu (India); Sukumar, Prabakar; Sriram, Padmanaban; Rajasekaran, Dhanabalan; Aketi, Srinu; Vivekanandan, Nagarajan [Department of Medical Physics, Cancer Institute (WIA), Adyar, Chennai, Tamil Nadu (India)

2012-01-01T23:59:59.000Z

295

Progress on an integrated multi-physics simulation predictive capability for plasma chamber nuclear components  

SciTech Connect

Understanding the behavior of a plasma chamber component in the fusion environment requires a simulation technique that is capable of integrating multi-disciplinary computational codes while appropriately treating geometric heterogeneity and complexity. Such a tool should be able to interpret phenomena from mutually dependent scientific disciplines and predict performance with sufficient accuracy and consistency. Integrated multi-physics simulation predictive capability (ISPC) relies upon advanced numerical simulation techniques and is being applied to ITER first wall/shield and Test Blanket Module (TBM) designs. In this paper, progress in ISPC development is described through the presentation of a number of integrated simulations. The simulations cover key physical phenomena encountered in a fusion plasma chamber system, including tritium permeation, fluid dynamics, and structure mechanics. Interface engines were developed in order to pass field data, such as surface deformation or nuclear heating rate, from the structural analysis to the thermo-fluid MHD analysis code for magnetohydrodynamic (MHD) velocity profile assessments, or from the neutronics analysis to the thermo-fluid analysis for temperature calculations, respectively. Near-term effort toward further ISPC development is discussed.

A. Ying; M. Abdou; H. Zhang; R. Munipalli; M. Ulrickson; M. Sawan; B. Merrill

2010-12-01T23:59:59.000Z

296

Neutron/gamma dose separation by the multiple-ion-chamber technique  

SciTech Connect

Many mixed n/..gamma.. dosimetry systems rely on two dosimeters, one composed of a tissue-equivalent material and the other made from a non-hydrogenous material. The paired chamber technique works well in fields of neutron radiation nearly identical in spectral composition to that in which the dosimeters were calibrated. However, this technique is drastically compromised in phantom due to the degradation of the neutron spectrum. The three-dosimeter technique allows for the fall-off in neutron sensitivity of the two non-hydrogenous dosimeters. Precise and physically meaningful results were obtained with this technique with a D-T source in air and in phantom and with simultaneous D-T neutron and /sup 60/Co gamma ray irradiation in air. The MORSE-CG coupled n/..gamma.. three-dimensional Monte Carlo code was employed to calculate neutron and gamma doses in a water phantom. Gamma doses calculated in phantom with this code were generally lower than corresponding ion chamber measurements. This can be explained by the departure of irradiation conditions from ideal narrow-beam geometry. 97 references.

Goetsch, S.J.

1983-01-01T23:59:59.000Z

297

Binary reconstruction of the heart chambers from biplane angiographic image sequences  

SciTech Connect

The aim of this work is the three-dimensional (3-D) reconstruction of the left or right heart chamber from digital biplane angiograms. The approach used, the binary reconstruction, exploits the density information of subtracted ventriculograms from two orthogonal views in addition to the ventricular contours. The ambiguity of the problem is largely reduced by incorporating a priori knowledge of human ventricles. A model-based reconstruction program is described that is applicable to routinely acquired biplane ventriculographic studies. Prior to reconstruction, several geometric and densitometric imaging errors are corrected. The finding of corresponding density profiles and anatomical landmarks is supported by a biplane image pairing procedure that takes the movement of the gantry system into account. Absolute measurements are based on geometric isocenter calibration and a slice-wise density calibration technique. The reconstructed ventricles allow 3-D visualization and regional wall motion analysis independently of the gantry setting. The method is applied to clinical angiograms and tested in left- and right-ventricular phantoms yielding a well shape conformity even with few model information. The results indicate that volumes of binary reconstructed ventricles are less projection-dependent compared to volume data derived by purely contour-based methods. A limitations is that the heart chamber must not be superimposed by other dye-filled structures in both projections.

Prause, G.P.M.; Onnasch, D.G.W. [Univ. of Kiel (Germany). Clinic of Pediatric Cardiology] [Univ. of Kiel (Germany). Clinic of Pediatric Cardiology

1996-08-01T23:59:59.000Z

298

Multinuclear and multidimensional solid-state NMR investigations of combustion chamber deposits  

SciTech Connect

Multinuclear solid-state NMR has been used to study the carbonaceous backbone of combustion chamber deposits (CCDs) generated in both gasoline and diesel engines. The combination of {sup 1}H-{sup 13}C cross-polarization, and dipolar dephasing techniques have been used to {open_quotes}average molecule{close_quotes} parameters for a large number of CCDs. These parameters were correlated with gasoline composition and cylinder cleanliness. Discussion will be presented on deposits from different areas of the chamber - piston top, cylinder head, squish, non-squish, end-gas, non-end gas regions. Deposits from various cylinders in a number of dynamometer engines, fleet car engines will be compared. The use of NMR to observe the effects of bench-test engine modifications on CCD structure will be demonstrated. The macromolecular structure of the deposits was studied by {sup 13}C-{sup 13}C spin-exchange experiments which allow one to observe internuclear dipolar interactions between the various carbon functionalities in the deposit. The spatial information on fuel additive - CCD interactions that these experiments provide will be discussed.

Edwards, J.C. [Texaco Research Center, Beacon, NY (United States)

1996-10-01T23:59:59.000Z

299

Electrical optimization of plasma-enhanced chemical vapor deposition chamber cleaning plasmas  

Science Journals Connector (OSTI)

Fluorinated gas discharges are widely used by the semiconductor industry in etching and chamber cleaning applications but the performance of these discharges varies in unpredictable ways for unknown reasons believed to be electrical in origin. To investigate possible mechanisms for this behavior we have measured the electrical characteristics of NF 3 /Ar CF 4 /O 2 /Ar and C 2 F 6 /O 2 /Ar chamber cleaning plasmas at 6.7267 Pa in a 13.56 MHz capacitively coupled parallel-plate reactor using radio-frequency current and voltage probes and optical emission spectroscopy. From the measurements power losses in the external circuitry surrounding the discharge were determined. Furthermore using the measurements and equivalent circuit models the mechanisms by which power was absorbed within the discharge itself were investigated. Power was absorbed most efficiently at particular values of the discharge impedance. These optimal impedances occur in the middle of a transition from capacitive impedances at low pressures to resistive impedances at high pressures. These results illustrate that the plasma impedance is a useful parameter for monitoring and optimizing plasma processes in highly electronegative gases.

M. A. Sobolewski; J. G. Langan; B. S. Felker

1998-01-01T23:59:59.000Z

300

Photoelectron track length distributions measured in a negative ion time projection chamber  

E-Print Network (OSTI)

We report photoelectron track length distributions between 3 and 8 keV in gas mixtures of Ne+CO2+CH3NO2 (260:80:10 Torr) and CO2+CH3NO2 (197.5: 15 Torr). The measurements were made using a negative ion time projection chamber (NITPC) at the National Synchrotron Light Source (NSLS) at the Brookhaven National Laboratory (BNL). We report the first quantitative analysis of photoelectron track length distributions in a gas. The distribution of track lengths at a given energy is best fit by a lognormal distribution. A powerlaw distribution of the form, f(E)=a(E/Eo)n, is found to fit the relationship between mean track length and energy. We find n=1.29 +/- 0.07 for Ne+CO2+CH3NO2 and n=1.20 +/- 0.09 for CO2+CH3NO2. Understanding the distribution of photoelectron track lengths in proportional counter gases is important for optimizing the pixel size and the dimensions of the active region in electron-drift time projection chambers (TPCs) and NITPC X-ray polarimeters.

Prieskorn, Z R; Kaaret, P E; Black, J K

2014-01-01T23:59:59.000Z

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301

Design and Construction of Large Size Micromegas Chambers for the ATLAS Upgrade of the Muon Spectrometer  

E-Print Network (OSTI)

Large area Micromegas detectors will be employed fo r the first time in high-energy physics experiments. A total surface of about 150 m$^2$ of the forward regions of the Muon Spectrometer of the ATLAS detector at LHC will be equipped with 8-layer Micromegas modules. Each module extends over a surface from 2 to 3 m$^2$ for a total active area of 1200 m$^2$. Together with the small strip Thin Gap Chambers they will compose the two New Small Wheels, which will replace the innermost stations of the ATLAS endcap muon tracking system in the 2018/19 shutdown. In order to achieve a 15% transverse momentum resol ution for 1 TeV muons, in addition to an excellent intrinsic resolution, the mechanical prec ision of each plane of the assembled module must be as good as 30 $\\mu$m along the precision coordi nate and 80 $\\mu$m perpendicular to the chamber. The design and construction procedure of the microm egas modules will be presented, as well as the design for the assembly of modules onto the New Small Wheel. Emphasis wi...

Losel, Philipp Jonathan; The ATLAS collaboration

2014-01-01T23:59:59.000Z

302

Quality assurance of proton beams using a multilayer ionization chamber system  

SciTech Connect

Purpose: The measurement of percentage depth-dose (PDD) distributions for the quality assurance of clinical proton beams is most commonly performed with a computerized water tank dosimetry system with ionization chamber, commonly referred to as water tank. Although the accuracy and reproducibility of this method is well established, it can be time-consuming if a large number of measurements are required. In this work the authors evaluate the linearity, reproducibility, sensitivity to field size, accuracy, and time-savings of another system: the Zebra, a multilayer ionization chamber system.Methods: The Zebra, consisting of 180 parallel-plate ionization chambers with 2 mm resolution, was used to measure depth-dose distributions. The measurements were performed for scattered and scanned proton pencil beams of multiple energies delivered by the Hitachi PROBEAT synchrotron-based delivery system. For scattered beams, the Zebra-measured depth-dose distributions were compared with those measured with the water tank. The principal descriptors extracted for comparisons were: range, the depth of the distal 90% dose; spread-out Bragg peak (SOBP) length, the region between the proximal 95% and distal 90% dose; and distal-dose fall off (DDF), the region between the distal 80% and 20% dose. For scanned beams, the Zebra-measured ranges were compared with those acquired using a Bragg peak chamber during commissioning.Results: The Zebra demonstrated better than 1% reproducibility and monitor unit linearity. The response of the Zebra was found to be sensitive to radiation field sizes greater than 12.5 12.5 cm; hence, the measurements used to determine accuracy were performed using a field size of 10 10 cm. For the scattered proton beams, PDD distributions showed 1.5% agreement within the SOBP, and 3.8% outside. Range values agreed within ?0.1 0.4 mm, with a maximum deviation of 1.2 mm. SOBP length values agreed within 0 2 mm, with a maximum deviation of 6 mm. DDF values agreed within 0.3 0.1 mm, with a maximum deviation of 0.6 mm. For the scanned proton pencil beams, Zebra and Bragg peak chamber range values demonstrated agreement of 0.0 0.3 mm with a maximum deviation of 1.3 mm. The setup and measurement time for all Zebra measurements was 3 and 20 times less, respectively, compared to the water tank measurements.Conclusions: Our investigation shows that the Zebra can be useful not only for fast but also for accurate measurements of the depth-dose distributions of both scattered and scanned proton beams. The analysis of a large set of measurements shows that the commonly assessed beam quality parameters obtained with the Zebra are within the acceptable variations specified by the manufacturer for our delivery system.

Dhanesar, Sandeep; Sahoo, Narayan; Kerr, Matthew; Taylor, M. Brad; Summers, Paige; Zhu, X. Ronald; Poenisch, Falk; Gillin, Michael [Department of Radiation Physics and Proton Therapy Center, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030 (United States) [Department of Radiation Physics and Proton Therapy Center, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030 (United States); Department of Radiation Physics and Proton Therapy Center, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030 and The University of Texas at Houston Graduate School of Biomedical Sciences, 6767 Bertner Avenue, S3.8344, Houston, Texas 77030 (United States); Department of Radiation Physics and Proton Therapy Center, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030 (United States); Department of Radiation Physics and Proton Therapy Center, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030 and The University of Texas at Houston Graduate School of Biomedical Sciences, 6767 Bertner Avenue, S3.8344, Houston, Texas 77030 (United States)

2013-09-15T23:59:59.000Z

303

Geology of the Upper Schep Creek area, Mason County, Texas  

E-Print Network (OSTI)

of the Llano uplift in Central Texas. The location and shape of tbe area are shown in Figure l. As the nano inplies, the upper part of Schep creek, as well as ths west branch of Panther Creek, &re within the area, ACCESSIBILITY Accessibility by road... is oausod by two internittont streans that aro deeply inoised into this plateau. The west branob of Panther Creek, which is the eastern nest stress, has developed a network of very short steep lateral oanyons in the areas of resistant Iinestone outorops...

Marshall, Hollis Dale

2012-06-07T23:59:59.000Z

304

Upper limits on charm-changing neutral-current interactions  

E-Print Network (OSTI)

parallel decays can be computed with NII =Ne(l+l )8(c l X), where N is the number of cc events, e(1+I ) is the detection efficiency for parallel decays, and 8(c l X) is the average semileptonic branching ratio of the charmed hadrons in the continuum...VOLUME 60, NUMBER 16 PHYSICAL REVIEW LETTERS 18 APRIL 1988 Upper Limits on Charm-Changing Neutral-Current Interactions P. Haas, ' M. Hempstead, ' T. Jensen, ' D. R. Johnson, ' H. Kagan, ' R. Kass, ' P. Baringer, R. L. McIlwain, D. H. Miller, C. R...

Baringer, Philip S.

1988-04-18T23:59:59.000Z

305

Widget:IconContainer | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Widget Edit History Facebook icon Twitter icon » Widget:IconContainer Jump to: navigation, search This widget provides a container around a custom icon. Parameters include: name - name of jquery-ui icon; see icons at bottom of this page color - css color of container, e.g. white or #a0a0a0 (hex color) widthx - css width of container (e.g. 12px, 2em), default 16 pixels widthy - css height of container (e.g. 12px, 2em), default 16 pixels margin - css margin of container, default is top 0px, right 5px, bottom 0px, left 5px cssstyle - css style to add, such as cssstyle=float:left iconcssclass - css class to add to icon, such as ui-icon-blue

306

Baseline Microstructural Characterization of Outer 3013 Containers  

SciTech Connect

Three DOE Standard 3013 outer storage containers were examined to characterize the microstructure of the type 316L stainless steel material of construction. Two of the containers were closure-welded yielding production-quality outer 3013 containers; the third examined container was not closed. Optical metallography and Knoop microhardness measurements were performed to establish a baseline characterization that will support future destructive examinations of 3013 outer containers in the storage inventory. Metallography revealed the microstructural features typical of this austenitic stainless steel as it is formed and welded. The grains were equiaxed with evident annealing twins. Flow lines were prominent in the forming directions of the cylindrical body and flat lids and bottom caps. No adverse indications were seen. Microhardness values, although widely varying, were consistent with annealed austenitic stainless steel. The data gathered as part of this characterization will be used as a baseline for the destructive examination of 3013 containers removed from the storage inventory.

Zapp, Phillip E.; Dunn, Kerry A

2005-07-31T23:59:59.000Z

307

System for inspection of stacked cargo containers  

DOE Patents (OSTI)

The present invention relates to a system for inspection of stacked cargo containers. One embodiment of the invention generally comprises a plurality of stacked cargo containers arranged in rows or tiers, each container having a top, a bottom a first side, a second side, a front end, and a back end; a plurality of spacers arranged in rows or tiers; one or more mobile inspection devices for inspecting the cargo containers, wherein the one or more inspection devices are removeably disposed within the spacers, the inspection means configured to move through the spacers to detect radiation within the containers. The invented system can also be configured to inspect the cargo containers for a variety of other potentially hazardous materials including but not limited to explosive and chemical threats.

Derenzo, Stephen (Pinole, CA)

2011-08-16T23:59:59.000Z

308

Extraction of depth-dependent perturbation factors for parallel-plate chambers in electron beams using a plastic scintillation detector  

SciTech Connect

Purpose: This work presents the experimental extraction of the overall perturbation factor P{sub Q} in megavoltage electron beams for NACP-02 and Roos parallel-plate ionization chambers using a plastic scintillation detector (PSD). Methods: The authors used a single scanning PSD mounted on a high-precision scanning tank to measure depth-dose curves in 6, 12, and 18 MeV clinical electron beams. The authors also measured depth-dose curves using the NACP-02 and PTW Roos chambers. Results: The authors found that the perturbation factors for the NACP-02 and Roos chambers increased substantially with depth, especially for low-energy electron beams. The experimental results were in good agreement with the results of Monte Carlo simulations reported by other investigators. The authors also found that using an effective point of measurement (EPOM) placed inside the air cavity reduced the variation of perturbation factors with depth and that the optimal EPOM appears to be energy dependent. Conclusions: A PSD can be used to experimentally extract perturbation factors for ionization chambers. The dosimetry protocol recommendations indicating that the point of measurement be placed on the inside face of the front window appear to be incorrect for parallel-plate chambers and result in errors in the R{sub 50} of approximately 0.4 mm at 6 MeV, 1.0 mm at 12 MeV, and 1.2 mm at 18 MeV.

Lacroix, Frederic; Guillot, Mathieu; McEwen, Malcolm; Cojocaru, Claudiu; Gingras, Luc; Beddar, A. Sam; Beaulieu, Luc [Departement de Radio-Oncologie, Centre hospitalier de l'Universite de Montreal (CHUM), 1560 Sherbrooke Est, Montreal, Quebec H2L 4M1 (Canada) and Departement de Physique, Universite de Montreal, Pavillon Roger-Gaudry (D-428), 2900 Boul. Edouard-Montpetit, Montreal, Quebec H3T 1J4 (Canada); Departement de Physique, de Genie Physique et d'Optique, Universite Laval, Quebec, Quebec G1K 7P4 (Canada) and Departement de Radio-Oncologie, Ho circumflex tel-Dieu de Quebec, Centre hospitalier Universitaire de Quebec (CHUQ), Quebec, Quebec G1R 2J6 (Canada); Ionizing Radiation Standards, Institute for National Measurement Standards, National Research Council (NRC), Ottawa, Ontario K1A 0R6 (Canada); Departement de Physique, de Genie Physique et d'Optique, Universite Laval, Quebec, Quebec G1K 7P4 (Canada) and Departement de Radio-Oncologie, Ho circumflex tel-Dieu de Quebec, Centre hospitalier Universitaire de Quebec (CHUQ), Quebec, Quebec G1R 2J6 (Canada); Department of Radiation Physics, Unit 94, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States); Departement de Physique, de Genie Physique et d'Optique, Universite Laval, Quebec, Quebec G1K 7P4 (Canada) and Departement de Radio-Oncologie, Hotel-Dieu de Quebec, Centre hospitalier Universitaire de Quebec (CHUQ), Quebec, Quebec G1R 2J6 (Canada)

2010-08-15T23:59:59.000Z

309

Three-dimensional temperature field simulation of magma chamber in the Los Humeros geothermal field, Puebla, Mexico  

Science Journals Connector (OSTI)

Three-dimensional (3-D) thermal modeling of a magma chamber in the Los Humeros geothermal field of Mexico was carried out for the entire geological history of about 500,000y. Earlier application of 3-D modeling for only about 30,000y of total simulation time with discretization time of 1000y and mesh size of 0.25km, had indicated that the thermal regime is affected more by the depth of magma chamber than its volume. Now using a chamber depth of 5km, chamber volume of 1400km3, shorter discretization time of 10 years, mesh size of 0.25km, convection in the geothermal reservoir, and magma recharge in the chamber, we present our best 3-D thermal model for the Los Humeros geothermal field. Although this model is consistent with the static formation temperature estimates from geothermal wells, ways to improve this model to make it suitable for the estimation of geothermal budget are also pointed out.

Surendra P. Verma; Efran Gmez-Arias

2013-01-01T23:59:59.000Z

310

Treating nahcolite containing formations and saline zones  

DOE Patents (OSTI)

A method for treating a nahcolite containing subsurface formation includes removing water from a saline zone in or near the formation. The removed water is heated using a steam and electricity cogeneration facility. The heated water is provided to the nahcolite containing formation. A fluid is produced from the nahcolite containing formation. The fluid includes at least some dissolved nahcolite. At least some of the fluid is provided to the saline zone.

Vinegar, Harold J

2013-06-11T23:59:59.000Z

311

Containment & Surveillance Systems Laboratory (CSSL) | ORNL  

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

Containment & Surveillance Systems Laboratory Containment & Surveillance Systems Laboratory May 30, 2013 The Containment and Surveillance Systems Laboratory is an arm of the highly acclaimed ORNL Safeguards Technology Integration Center. This lab is used to evaluate and develop custom technology, as well as integrate, mock up, and stage equipment for evaluation deployments for a variety of containment and surveillance applications. Activities in this lab focus on integrating technology for sealing, monitoring, and tracking nuclear material in a variety of environments. It is well suited for developing, integrating, and deploying active and passive tamper-indicating devices and enclosures, unattended and remote monitoring systems, and wired and wireless attribute-monitoring systems. Applications

312

Containment Unidirectional Resource Loading System (CURLS) |...  

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

glovebox resource changes, while maintaining containment Can be mounted in existing glove ports, offering an array of fail-safe cartridges for all resource needs curlsfactsheet...

313

Heat Transfer Fluids Containing Nanoparticles | Argonne National...  

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

Heat Transfer Fluids Containing Nanoparticles Technology available for licensing: A stable, nonreactive nanofluid that exhibits enhanced heat transfer properties with only a...

314

STANDARD OPERATING PROCEDURE ACIDS CONTAINING PHOSPHOROUS  

E-Print Network (OSTI)

12.1 STANDARD OPERATING PROCEDURE for ACIDS CONTAINING PHOSPHOROUS Location(s): ___________________________________________________ Chemical(s): Hypophosphorous acid, methylphosphonic acid, phosphonic acid, phosphoric acid, phosphorous

Pawlowski, Wojtek

315

Contained Firing Facility | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Contained Firing Facility | National Nuclear Security Administration Contained Firing Facility | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Contained Firing Facility Home > About Us > Our Programs > Defense Programs > Office of Research, Development, Test, and Evaluation > Office of Research and Development > Facilities > Contained Firing Facility

316

Combined upper limit for SM Higgs at the Tevatron  

SciTech Connect

We combine results from CDF and D0 on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Higgs Tevatron combination, more data and new channels (WH {yields} {tau}{nu}b{bar b}, VH {yields} {tau}{tau}b{bar b}/jj{tau}{tau}, VH {yields} jjb{bar b}, t{bar t}H {yields} t{bar t}b{bar b}) have been added. Most previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-3.6 fb{sup -1} of data analyzed at CDF, and 0.9-4.2 fb{sup -1} at D0, the 95%C.L. upper limits on Higgs boson production are a factor of 2.5 (0.86) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c{sup 2}. Based on simulation, the corresponding median expected upper limits are 2.4 (1.1). The mass range excluded at 95% C.L. for a SM Higgs has been extended to 160 < m{sub H} < 170 GeV/c{sup 2}.

Penning, Bjorn; /Fermilab

2009-01-01T23:59:59.000Z

317

An Alternative to Performing Remote-Handled Transuranic Waste Container Headspace Gas Sampling and Analysis  

SciTech Connect

The Waste Isolation Pilot Plant (WIPP) is operating under a Resource Conservation and Recovery Act (RCRA) Hazardous Waste Facility Permit (HWFP) for contact-handled (CH) transuranic (TRU) waste. The HWFP contains limitations on allowable emissions from waste disposed in the underground. This environmental performance standard imposed on the WIPP consists of limiting volatile organic compound (VOC) emissions from emplaced waste to ensure protection of human health and the environment. The standard is currently met by tracking individual waste container headspace gas concentrations, which are determined by headspace gas sampling and analysis of CH TRU waste containers. The WIPP is seeking a HWFP modification to allow the disposal of remote-handled (RH) TRU waste. Because RH TRU waste is limited to approximately 5% of the waste volume and is emplaced in the disposal room walls, it is possible to bound the potential RH TRU waste contribution to VOC emissions using conservative upper bounds. These conservative upper bounds were developed as an alternative to RH TRU waste canister headspace gas sampling and analysis. The methodology used to perform the calculations used to evaluate VOC emissions from emplaced RH TRU waste canisters applied the same equations as those used to evaluate VOC emissions in the original HWFP application.

Spangler, L. R.; Djordjevic, S. M.; Kehrman, R. F.; Most, W. A.

2002-02-26T23:59:59.000Z

318

Characterization of Section 404 Permit Mitigation Plans, Coastal Margin and Associated Watersheds, Upper Texas Coast  

E-Print Network (OSTI)

. Neal Wilkins, Diane Radke, Linda Causey, Dawn Miles, Tariq Ayyub, Manny Acevedo, Chris Lang, Kristi Smith, Irene Chambers, Lee Bartlett, Denise H. Garza, Larry Hysmith, Heather Prestridge, Dr. Toby Hibbitts, and Dr. Ben Marks. Extra special...

Conkey, April A.

2010-01-14T23:59:59.000Z

319

CRACKING OF PIc NUCLEAR CONTAINMENT STRUCTURES  

E-Print Network (OSTI)

CRACKING OF PIc NUCLEAR CONTAINMENT STRUCTURES By Sami H. Rizkalla,l Sidney H. Simmonds': and James structures for some Canadian nuclear reactors consist of a heavy concrete base, a cylindrical wall, a ring the design accident pressure. This would result in the walls and dome of the containment being stressed

320

Corrosion assessment of dry fuel storage containers  

SciTech Connect

The structural stability as a function of expected corrosion degradation of 75 dry fuel storage containers located in the 200 Area Low-Level Waste Burial Grounds was evaluated. These containers include 22 concrete burial containers, 13 55-gal (208-l) drums, and 40 Experimental Breeder Reactor II (EBR-II) transport/storage casks. All containers are buried beneath at least 48 in. of soil and a heavy plastic tarp with the exception of 35 of the EBR-II casks which are exposed to atmosphere. A literature review revealed that little general corrosion is expected and pitting corrosion of the carbon steel used as the exterior shell for all containers (with the exception of the concrete containers) will occur at a maximum rate of 3.5 mil/yr. Penetration from pitting of the exterior shell of the 208-l drums and EBR-II casks is calculated to occur after 18 and 71 years of burial, respectively. The internal construction beneath the shell would be expected to preclude containment breach, however, for the drums and casks. The estimates for structural failure of the external shells, large-scale shell deterioration due to corrosion, are considerably longer, 39 and 150 years respectively for the drums and casks. The concrete burial containers are expected to withstand a service life of 50 years.

Graves, C.E.

1994-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Reliability analysis of steel-containment strength  

SciTech Connect

A best estimate and uncertainty assessment of the resistance of the St. Lucie, Cherokee, Perry, WPPSS and Browns Ferry containment vessels was performed. The Monte Carlo simulation technique and second moment approach were compared as a means of calculating the probability distribution of the containment resistance. A uniform static internal pressure was used and strain ductility was taken as the failure criterion. Approximate methods were developed and calibrated with finite element analysis. Both approximate and finite element analyses were performed on the axisymmetric containment structure. An uncertainty assessment of the containment strength was then performed by the second moment reliability method. Based upon the approximate methods, the cumulative distribution for the resistance of each of the five containments (shell modes only) is presented.

Greimann, L.G.; Fanous, F.; Wold-Tinsae, A.; Ketalaar, D.; Lin, T.; Bluhm, D.

1982-06-01T23:59:59.000Z

322

U.S. Chamber of Commerce's 4th Annual North America Forum | Department of  

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

Commerce's 4th Annual North America Forum Commerce's 4th Annual North America Forum U.S. Chamber of Commerce's 4th Annual North America Forum June 16, 2008 - 1:30pm Addthis Remarks As Prepared for Delivery for Secretary Bodman Thank you very much, Ron, for that kind introduction and for the critically important work that you and your colleagues do at Lawrence Livermore. I also want to thank my good friend Secretary George Shultz - along with his esteemed co-chairs for this event, Peter Lougheed and Pedro Aspe, for inviting me to be with you. It's a pleasure to be here. The way I see it, this event could not come at a better time. With its focus on enhancing cooperation among the United States, Canada and Mexico - and on bringing together representatives of our governments and the private sector - you are helping to develop and achieve real and lasting solutions

323

Performance of a Chamber for Studying the Liquid Xenon Response to Nuclear Recoils  

E-Print Network (OSTI)

The design and performance of a 1.2 liter liquid xenon chamber equipped with 7 two-inch photomultiplier tubes, with the purpose of studying the scintillation response of xenon to gamma-rays and neutrons, is described. Measurements with gamma-rays indicate a high VUV light collection efficiency resulting in ~5.5 photoelectrons per 1 keV of deposited energy. The energy resolution (FWHM) is 18% and 22%, for 122 keV and 511 keV gamma-rays, respectively. An algorithm for the reconstruction of the scintillation coordinates in (x,y) plane was developed and tested. The position resolution is estimated to be 6.9 mm (sigma) for 122 keV gamma-rays.

V. Chepel; F. Neves; V. Solovov; A. Pereira; M. I. Lopes; J. Pinto da Cunha; P. Mendes; A. Lindote; C. P. Silva; R. Ferreira Marques; A. J. P. L. Policarpo

2005-01-07T23:59:59.000Z

324

Environmental chamber measurements of mercury flux from coal utilization by-products  

SciTech Connect

An environmental chamber was constructed to measure the mercury flux from coal utilization by-product (CUB) samples. Samples of fly ash, FGD gypsum, and wallboard made from FGD gypsum were tested under both dark and illuminated conditions with or without the addition of water to the sample. Mercury releases varied widely, with 7-day experiment averages ranging from -6.8 to 73 ng/m2 h for the fly ash samples and -5.2 to 335 ng/m2 h for the FGD/wallboard samples. Initial mercury content, fly ash type, and light exposure had no observable consistent effects on the mercury flux. For the fly ash samples, the effect of a mercury control technology was to decrease the emission. For three of the four pairs of FGD gypsum and wallboard samples, the wallboard sample released less (or absorbed more) mercury than the gypsum.

Pekney, N.J.; Martello, D.V.; Schroeder, K.T.; Granite, E.J.

2009-05-01T23:59:59.000Z

325

Performance of a Large Area Avalanche Photodiode in a Liquid Xenon Ionization and Scintillation Chamber  

E-Print Network (OSTI)

Scintillation light produced in liquid xenon (LXe) by alpha particles, electrons and gamma-rays was detected with a large area avalanche photodiode (LAAPD) immersed in the liquid. The alpha scintillation yield was measured as a function of applied electric field. We estimate the quantum efficiency of the LAAPD to be 45%. The best energy resolution from the light measurement at zero electric field is 7.5%(sigma) for 976 keV internal conversion electrons from Bi-207 and 2.6%(sigma) for 5.5 MeV alpha particles from Am-241. The detector used for these measurements was also operated as a gridded ionization chamber to measure the charge yield. We confirm that using a LAAPD in LXe does not introduce impurities which inhibit the drifting of free electrons.

K. Ni; E. Aprile; D. Day; K. L. Giboni; J. A. M. Lopes; P. Majewski; M. Yamashita

2005-02-14T23:59:59.000Z

326

Design, Fabrication, and Application of a Dynamic Chamber for Measuring Gas Emissions from Soil  

Science Journals Connector (OSTI)

Accurate measurement of the emission of trace gases and VOCs from soils to the atmosphere is essential for studying the behavior of gas movement and its fate in the subsurface, for evaluating existing theories and models of trace gas and VOC emissions, for estimating masses of trace gases and VOCs emitted into the atmosphere, and thus, for assessing the effects of such emissions upon the environment. ... (6) The outside surface of the chamber should be able to reflect solar radiation so that the radiant heating or the greenhouse effect can be effectively reduced. ... This flow rate was monitored every 1 s using a turbine-wheel gas flow sensor (McMillan Co., Georgetown, TX), averaged over a 5-min interval and recorded by an on-site computer. ...

Fang Gao; S. R. Yates; M. V. Yates; Jianying Gan; F. F. Ernst

1996-12-30T23:59:59.000Z

327

Microbial Community Analysis of a Single Chamber Microbial Fuel Cell Using Potato Wastewater  

SciTech Connect

Microbial fuel cells (MFCs) convert chemical energy to electrical energy via bioelectrochemical reactions mediated by microorganisms. We investigated the diversity of the microbial community in an air cathode single chamber MFC that utilized potato-process wastewater as substrate. Terminal Restriction Fragment Length Polymorphism (T-RFLP) results indicated that the bacterial communities on the anode, cathode, control electrode, and MFC bulk fluid were similar, but differed dramatically from that of the anaerobic domestic sludge and potato wastewater inoculum. The 16S rDNA sequencing results showed that microbial species detected on the anode were predominantly within the phyla of Proteobacteria, Firmicutes, and Bacteroidetes. Fluorescent microscopy results indicated that there was a clear enhancement of biofilm formation on the anode. Results of this study could help improve understanding of the complexity of microbial communities and optimize the microbial composition for generating electricity by MFCs that utilize potato wastewater.

Zhen Li; Rishika Haynes; Eugene Sato; Malcolm Shields; Yoshiko Fujita; Chikashi Sato

2014-04-01T23:59:59.000Z

328

Proposal for the award of a blanket purchase contract, without competitive tendering, for the supply of pressurised ionisation chambers for radiation monitoring  

E-Print Network (OSTI)

Proposal for the award of a blanket purchase contract, without competitive tendering, for the supply of pressurised ionisation chambers for radiation monitoring

2013-01-01T23:59:59.000Z

329

Usiing NovoCOS cleaning equipment in repairing the furnace-chamber lining in coke batteries 4 & 5 at OAO Koks  

SciTech Connect

Experience with a new surface-preparation technology for the ceramic resurfacing of the refractory furnace-chamber lining in coke batteries is described.

S.G. Protasov; R. Linden; A. Gross [OAO Koks, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

330

A sonic spark chamber system with on-line computation for studying the reaction $\\pi^{-} + p -> f^{0} + n$ at 3 GeV/c  

E-Print Network (OSTI)

A sonic spark chamber system with on-line computation for studying the reaction $\\pi^{-} + p -> f^{0} + n$ at 3 GeV/c

Bird, L; West, D; Whitehead, G; Wood, E; Crabb, D G; Hutchinson, G W; McEwen, J G; Ott, R; Aitken, D; Hague, J; Jennings, R; Parsons, A J; Auld, E G

1964-01-01T23:59:59.000Z

331

Posterior chamber phakic intraocular lens to correct myopia: Long-term follow-up  

Science Journals Connector (OSTI)

Purpose To evaluate the long-term safety and efficacy of a refractive phakic intraocular lens (pIOL) (PRL) to correct moderate to high myopia. Setting Department of Ophthalmology, University Medicine Charit Berlin, Berlin, Germany. Design Retrospective cohort study. Methods Uncorrected (UDVA) and corrected (CDVA) distance visual acuities, refraction, intraocular pressure, endothelial cell loss, and adverse events were evaluated. Results The study enrolled 53 eyes (mean spherical equivalent [SE] ?12.17 diopters [D] 4.12 [SD]) of 29 patients. The mean age was 34.6 9.2 years and the mean follow-up, 86 21.2 months. The mean UDVA improved from 1.37 0.28 logMAR preoperatively to 0.14 0.19 logMAR at the last postoperative visit (P<.05). The mean CDVA improved from 0.10 0.18 logMAR to ?0.01 0.09 logMAR (P<.05). The overall mean efficacy index and mean safety index were 0.9 and 1.21, respectively, at the last follow-up visit. The mean endothelial cell loss at the last follow-up was 6.4%. The complications were slight posterior chamber (PC) pIOL decentration (5 eyes, 9.4%), severe PC pIOL decentration resulting in pIOL removal (1 eye, 1.8%), glaucoma (4 eyes, 7.5%), clinically significant cortical lens opacification resulting in cataract surgery (4 eyes, 7.5%), clinically asymptomatic anterior subcapsular cataract formation (6 eyes, 11.3%), and retinal detachment (2 eyes, 3.8%). Conclusions Posterior chamber phakic pIOL implantation to correct moderate to high myopia provided predictable and stable refractive results but with a high rate of serious complications over the long term. Financial Disclosure No author has a financial or proprietary interest in any material or method mentioned.

Necip Torun; Eckart Bertelmann; Matthias K.J. Klamann; Anna-Karina Maier; Anja Liekfeld; Johannes Gonnermann

2013-01-01T23:59:59.000Z

332

Upper crustal structure of an obliquely extending orogen, central Coso  

Open Energy Info (EERE)

structure of an obliquely extending orogen, central Coso structure of an obliquely extending orogen, central Coso Range, eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Upper crustal structure of an obliquely extending orogen, central Coso Range, eastern California Details Activities (1) Areas (1) Regions (0) Abstract: The Coso Range is an extensional domain in a releasing stepover between major dextral strike-slip faults along the southeastern margin of the Sierra Nevada Microplate. New multifold seismic reflection data from the Coso geothermal field in the central Coso Range image reflectors that resemble suites of structural and magmatic features exposed in many exhumed metamorphic core complexes (MCC). The Coso Wash Fault, a Holocene-active normal fault that is a locus of surface geothermal activity, is imaged as a

333

Upper Marlboro, Maryland: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Marlboro, Maryland: Energy Resources Marlboro, Maryland: Energy Resources (Redirected from Upper Marlboro, MD) Jump to: navigation, search Equivalent URI DBpedia Coordinates 38.8159473°, -76.7496909° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.8159473,"lon":-76.7496909,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

334

Upper crustal faulting in an obliquely extending orogen, structural control  

Open Energy Info (EERE)

faulting in an obliquely extending orogen, structural control faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Upper crustal faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Details Activities (1) Areas (1) Regions (0) Abstract: New multifold seismic reflection data from the Coso geothermal field in the central Coso Range, eastern California, image brittle faults and other structures in a zone of localized crustal extension between two major strike-slip faults. The Coso Wash fault, a Quaternary-active normal fault that is a locus of surface geothermal activity, is well-imaged as a

335

Integrated solar upper stage (ISUS) space demonstration design  

Science Journals Connector (OSTI)

High temperature solar thermal propulsion/power systems will enable the placement of higher power satellite systems launched from smaller less expensive launch vehicles. The on-going Integrated Solar Upper Stage (ISUS) Program sponsored by Phillips Laboratory is one such solar thermal system. A system test of an engine ground test configuration of ISUS is planned for Spring 1997. The next step in the development of the ISUS system will be a flight demonstration mission. This paper details the conceptual designs for two potential ISUS space demonstration configurations. These designs were developed with a design-to-cost philosophy for a LEO (low Earth orbit) to GEO (geosynchronous equatorial orbit) and LEO to HEEO (highly elliptical Earth orbit) flight demonstration missions. Design considerations included packaging within the selected launch vehicle fairings (Pegasus XL and SSLV Taurus) system performance propellant selection ( H 2 CH 4 or NH 3 ) and 100150 watts of power production using thermionic diodes.

Patrick Frye

1997-01-01T23:59:59.000Z

336

Corrosion resistant storage container for radioactive material  

DOE Patents (OSTI)

A corrosion resistant long-term storage container for isolating high-level radioactive waste material in a repository is claimed. The container is formed of a plurality of sealed corrosion resistant canisters of different relative sizes, with the smaller canisters housed within the larger canisters, and with spacer means disposed between juxtaposed pairs of canisters to maintain a predetermined spacing between each of the canisters. The combination of the plural surfaces of the canisters and the associated spacer means is effective to make the container capable of resisting corrosion, and thereby of preventing waste material from leaking from the innermost canister into the ambient atmosphere.

Schweitzer, D.G.; Davis, M.S.

1984-08-30T23:59:59.000Z

337

Corrosion resistant storage container for radioactive material  

DOE Patents (OSTI)

A corrosion resistant long-term storage container for isolating radioactive waste material in a repository. The container is formed of a plurality of sealed corrosion resistant canisters of different relative sizes, with the smaller canisters housed within the larger canisters, and with spacer means disposed between judxtaposed pairs of canisters to maintain a predetermined spacing between each of the canisters. The combination of the plural surfaces of the canisters and the associated spacer means is effective to make the container capable of resisting corrosion, and thereby of preventing waste material from leaking from the innermost canister into the ambient atmosphere.

Schweitzer, Donald G. (Bayport, NY); Davis, Mary S. (Wading River, NY)

1990-01-01T23:59:59.000Z

338

Successful fluorine-containing herbicide agrochemicals  

Science Journals Connector (OSTI)

Abstract Of the herbicides licensed worldwide, currently around 25% contain at least one fluorine atom and many contain multiple fluorines in the form of difluoro- and trifluoromethyl groups. Fluorine-containing compounds have made a significant contribution to the development of products for the agrochemicals industry and many organofluorine entities have found stable market positions. In this review we highlight the most important fluorinated herbicides in terms of their global use. The compounds are grouped by mode of action. A synthesis route is described for each compound although the synthesis presented may not actually be the industrial process.

Tomoya Fujiwara; David OHagan

2014-01-01T23:59:59.000Z

339

Detecting discontinuities in time series of upper air data: Demonstration of an adaptive filter technique  

SciTech Connect

The issue of global climate change due to increased anthropogenic emissions of greenhouse gases in the atmosphere has gained considerable attention and importance. Climate change studies require the interpretation of weather data collected in numerous locations and/or over the span of several decades. Unfortunately, these data contain biases caused by changes in instruments and data acquisition procedures. It is essential that biases are identified and/or removed before these data can be used confidently in the context of climate change research. The purpose of this paper is to illustrate the use of an adaptive moving average filter and compare it with traditional parametric methods. The advantage of the adaptive filter over traditional parametric methods is that it is less effected by seasonal patterns and trends. The filter has been applied to upper air relative humidity and temperature data. Applied to generated data, the filter has a root mean squared error accuracy of about 600 days when locating changes of 0.1 standard deviations and about 20 days for changes of 0.5 standard deviations. In some circumstances, the accuracy of location estimation can be improved through parametric techniques used in conjunction with the adaptive filter.

Zurbenko, I.; Chen, J.; Rao, S.T. [State Univ. of New York, Albany, NY (United States)] [and others

1997-11-01T23:59:59.000Z

340

Protect and Restore the Upper Lochsa : Annual Progress Report, May 2008 April 2009.  

SciTech Connect

The Upper Lochsa watersheds included in the project contain critical spawning and rearing habitat for anadromous and resident fish (Clearwater National Forest 1999). Species that depend on the tributary habitat include spring chinook salmon (Oncorhynchus tshawytscha), Snake River summer steelhead (Oncorhynchus mykiss), bull trout (Salvelinus confluentes), and westslope cutthroat trout (Oncorhynchus clarki lewisi). Steelhead and bull trout populations are currently listed as Threatened under the Endangered Species Act (ESA), and westslope cutthroat trout has been petitioned for listing. Both out-of-basin and in-basin factors threaten fish populations in the Lochsa Drainage (Clearwater Subbasin Plan 2003). Out-of-basin factors include the hydroelectric system and ocean conditions, while in-basin factors include a variety of management activities leading to habitat degradation. This project is implemented under Bonneville Power Administration's Fish and Wildlife program in order to meet National Marine Fisheries Service requirements to offset losses caused by the operation of the hydrosystem by improving tributary habitats to promote increased productivity of salmon and steelhead. The Clearwater Subbasin Plan (2003) defines limiting factors to fisheries in the area as watershed disturbances, habitat degradation, sediment, temperature, and connectivity.

Lloyd, Rebecca; Forestieri, David [Nez Perce Tribe

2009-08-13T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Upper limit on the cross section for reactor antineutrinos changing 22Na decay rates  

E-Print Network (OSTI)

In this paper we present results of a long-term observation of the decay of 22Na in the presence of a nuclear fission reactor. The measurements were made outside the containment wall of and underneath the Koeberg nuclear power plant near Cape Town, South Africa. Antineutrino fluxes ranged from ~5*10^11 to 1.6*10^13 cm^-2 s^-1 during this period. We show that the coincidence summing technique provides a sensitive tool to measure a change in the total decay constant as well as the branching ratio between EC and beta+ decay of 22Na to the first excited state in 22Ne. We observe a relative change in count rate between reactor-ON and reactor-OFF equal to (-0.51+/-0.11)*10^-4. After evaluating possible systematic uncertainties we conclude that the effect is either due to a hidden instrumental cause or due to an interaction between antineutrinos and the 22Na nucleus. An upper limit of ~0.03 barn has been deduced for observing any change in the decay rate of 22Na due to antineutrino interactions.

de Meijer, R J

2014-01-01T23:59:59.000Z

342

Upper limit on the cross section for reactor antineutrinos changing 22Na decay rates  

E-Print Network (OSTI)

In this paper we present results of a long-term observation of the decay of 22Na in the presence of a nuclear fission reactor. The measurements were made outside the containment wall of and underneath the Koeberg nuclear power plant near Cape Town, South Africa. Antineutrino fluxes ranged from ~5*10^11 to 1.6*10^13 cm^-2 s^-1 during this period. We show that the coincidence summing technique provides a sensitive tool to measure a change in the total decay constant as well as the branching ratio between EC and beta+ decay of 22Na to the first excited state in 22Ne. We observe a relative change in count rate between reactor-ON and reactor-OFF equal to (-0.51+/-0.11)*10^-4. After evaluating possible systematic uncertainties we conclude that the effect is either due to a hidden instrumental cause or due to an interaction between antineutrinos and the 22Na nucleus. An upper limit of ~0.03 barn has been deduced for observing any change in the decay rate of 22Na due to antineutrino interactions.

R. J. de Meijer; S. W. Steyn

2014-09-23T23:59:59.000Z

343

Radiation Shielding Materials and Containers Incorporating Same  

DOE Patents (OSTI)

An improved radiation shielding material and storage systems for radioactive materials incorporating the same. The PYRolytic Uranium Compound (''PYRUC'') shielding material is preferably formed by heat and/or pressure treatment of a precursor material comprising microspheres of a uranium compound, such as uranium dioxide or uranium carbide, and a suitable binder. The PYRUC shielding material provides improved radiation shielding, thermal characteristic, cost and ease of use in comparison with other shielding materials. The shielding material can be used to form containment systems, container vessels, shielding structures, and containment storage areas, all of which can be used to house radioactive waste. The preferred shielding system is in the form of a container for storage, transportation, and disposal of radioactive waste. In addition, improved methods for preparing uranium dioxide and uranium carbide microspheres for use in the radiation shielding materials are also provided.

Mirsky, Steven M.; Krill, Stephen J.; and Murray, Alexander P.

2005-11-01T23:59:59.000Z

344

Factors Impacting Allergen-Containing Particle Resuspension.  

E-Print Network (OSTI)

??An experimental apparatus equipped with a simulated walking-induced floor disturbance system was used to explore the influence of occupant activity on the aerosolization of allergen-containing (more)

Gomes, Carlos

2007-01-01T23:59:59.000Z

345

Burial container subsidence load stress calculations  

SciTech Connect

This document captures the supporting analyses conducted to determine if the LLCE (Long-Length Contaminated Equipment) burial containers are structurally adequate under different trench closure scenarios. The LLCE is equipment that was inside tank farm tanks.

Veith, E.M.

1995-11-01T23:59:59.000Z

346

Container evaluation for microwave solidification project  

SciTech Connect

This document discusses the development and testing of a suitable waste container and packaging arrangement to be used with the Microwave Solidification System (MSS) and Bagless Posting System (BPS). The project involves the Rocky Flats Plant.

Smith, J.A.

1994-08-01T23:59:59.000Z

347

System and method for liquid silicon containment  

DOE Patents (OSTI)

This invention relates to a system and a method for liquid silicon containment, such as during the casting of high purity silicon used in solar cells or solar modules. The containment apparatus includes a shielding member adapted to prevent breaching molten silicon from contacting structural elements or cooling elements of a casting device, and a volume adapted to hold a quantity of breaching molten silicon with the volume formed by a bottom and one or more sides.

Cliber, James A; Clark, Roger F; Stoddard, Nathan G; Von Dollen, Paul

2013-05-28T23:59:59.000Z

348

Compact, self-contained optical spectrometer  

SciTech Connect

We describe the construction and performance of a self-contained, battery-operated, hand-held optical spectrometer. This unit contains an on-board optical excitation source, miniaturized monochromator, CCD detector, Peltier cooler, LCD display module, and microprocessor control. We demonstrate capabilities for qualitative fluorescence determinations and semiquantitative fluorescence and absorption measurements. Resolution is {lambda}/{delta}{lambda}{approx_equal}1200 at 434 nm. {copyright} {ital 1995 Society for Applied Spectroscopy.}

Baird, W.; Nogar, N.S. [Chemical Sciences and Technology, CST-1 MSJ565, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

1995-11-01T23:59:59.000Z

349

System and method for liquid silicon containment  

SciTech Connect

This invention relates to a system and a method for liquid silicon containment, such as during the casting of high purity silicon used in solar cells or solar modules. The containment apparatus includes a shielding ember adapted to prevent breaching molten silicon from contacting structural elements or cooling elements of a casting device, and a volume adapted to hold a quantity of breaching molten silicon with the volume formed by a bottom and one or more sides.

Cliber, James A; Clark, Roger F; Stoddard, Nathan G; Von Dollen, Paul

2014-06-03T23:59:59.000Z

350

Effect of sweep gas composition on ionization chamber response in the BEATRIX-II tritium recovery experiment  

SciTech Connect

The BEATRIX-II irradiation experiment was an in situ tritium recovery experiment to evaluate the tritium release characteristics of fusion ceramic breeder materials and to characterize their stability under fast neutron irradiation to extended burnups. This is an International Energy Agency (IEA) sponsored experiment which is being carried out in the Materials Open Test Assembly of Fast Flux Test Facility (FFTF). The participants are Japan, Canada and the US The in situ tritium recovery experiment consisted of two individual in-reactor experimental assemblies (Phase I and Phase II) that were irradiated for 300 and 200 EFPD, respectively. Each experimental phase included two specimens: a thin annular specimen capable of temperature changes and a larger temperature-gradient specimen. In Phase I both specimens were Li{sub 2}O while for Phase II the temperature-change specimen consisted of Li{sub 2}O and the temperature-gradient specimen was a Li{sub 2}ZrO{sub 3} spherebed. Real-time measurements of the tritium release from the specimens during changing conditions (neutronics, temperature and sweep gas composition) were made using ion chambers. In order to correctly interpret the response of the ionization chambers it is necessary to understand the effect of changing sweep gas composition on the operation of the chambers. The purpose of this paper is to describe activities carried out to determine the effect of hydrogen additions to a helium sweep gas on the operation of these ionization chambers.

Slagle, O.D.; Hollenberg, G.W. [Pacific Northwest Lab., Richland, WA (United States); Baker, D.E. [Westinghouse Hanford Co., Richland, WA (United States)

1992-10-01T23:59:59.000Z

351

Effect of sweep gas composition on ionization chamber response in the BEATRIX-II tritium recovery experiment  

SciTech Connect

The BEATRIX-II irradiation experiment was an in situ tritium recovery experiment to evaluate the tritium release characteristics of fusion ceramic breeder materials and to characterize their stability under fast neutron irradiation to extended burnups. This is an International Energy Agency (IEA) sponsored experiment which is being carried out in the Materials Open Test Assembly of Fast Flux Test Facility (FFTF). The participants are Japan, Canada and the US The in situ tritium recovery experiment consisted of two individual in-reactor experimental assemblies (Phase I and Phase II) that were irradiated for 300 and 200 EFPD, respectively. Each experimental phase included two specimens: a thin annular specimen capable of temperature changes and a larger temperature-gradient specimen. In Phase I both specimens were Li[sub 2]O while for Phase II the temperature-change specimen consisted of Li[sub 2]O and the temperature-gradient specimen was a Li[sub 2]ZrO[sub 3] spherebed. Real-time measurements of the tritium release from the specimens during changing conditions (neutronics, temperature and sweep gas composition) were made using ion chambers. In order to correctly interpret the response of the ionization chambers it is necessary to understand the effect of changing sweep gas composition on the operation of the chambers. The purpose of this paper is to describe activities carried out to determine the effect of hydrogen additions to a helium sweep gas on the operation of these ionization chambers.

Slagle, O.D.; Hollenberg, G.W. (Pacific Northwest Lab., Richland, WA (United States)); Baker, D.E. (Westinghouse Hanford Co., Richland, WA (United States))

1992-10-01T23:59:59.000Z

352

2014 National Small Business Contracting Summit- US Womens Chamber of Commerce & National Association of Small Business Contractors  

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

The National Association of Small Business Contractors and the U.S. Women's Chamber of Commerce present the 2014 National Small Business Federal Contracting Summit. The event will include sessions on securing a fair share of federal contracting, legal issues, trends and opportunities.

353

A Geographic Redirection Service for On-line Games Chris Chambers Wu-chi Feng Wu-chang Feng  

E-Print Network (OSTI)

@OHSU {chambers,wuchi,wuchang}@cse.ogi.edu Debanjan Saha IBM Research dsaha@us.ibm.com ABSTRACT For many on Shooters, fre- quently utilize a widely distributed server model. For the most popular FPS at this time, Counter-Strike (a variant of Half-Life), there are more than 30,000 registered servers running at any

354

Coalbed gases and hydrocarbon source rock potential of upper Carboniferous coal-bearing strata in upper Silesian Coal Basin, Poland  

SciTech Connect

The Upper Silesian Coal Basin (USCB) is one of the major Upper Carboniferous coal basins in the world. Its coalbed gas reserves to the depths of 1,000 m are estimated to be about 350 billion cubic meters (about 12.4 TCF). Coalbed gases in the USCB are variable in both molecular and stable isotope composition [{delta}{sup 13}C(CH{sub 4}), {delta}D(CH{sub 4}), {delta}{sup 13}C(C{sub 2}H{sub 6}), {delta}{sup 13}C(C{sub 3}H{sub 8}), {delta}{sup 13}C(CO{sub 2})]. Such variability suggests the effects of both primary reactions operating during the generation of gases and secondary processes such as mixing and migration. Coalbed gases are mostly thermogenic methane in which depth-related isotopic fractionation has resulted from migration but not from mixing with the microbial one. The stable carbon isotope composition indicates that the carbon dioxide, ethane and higher gaseous hydrocarbons were generated during the bituminous coal stage of the coalification process. The main stage of coalbed gas generation occurred during the Variscan orogeny, and generation was completed after the Leonian and Asturian phases of this orogeny. The coals and carbonaceous shales have high gas generation potential but low potential for generation and expulsion of oil compared to the known Type III source rocks elsewhere. In general, the carbonaceous shales have slightly higher potential for oil generation, but probably would not be able to exceed expulsion thresholds necessary to expel economic quantities of oil.

Kotarba, M.J.J. [Univ. of Mining and metallurgy, Cracow (Poland); Clayton, J.L.; Rice, D.D. [Geological Survey, Denver, CO (United States)

1996-12-31T23:59:59.000Z

355

Method and apparatus for container leakage testing  

DOE Patents (OSTI)

An apparatus for use in one-hundred percent leak testing of food containers used in conjunction with a tracer gas. The apparatus includes a shell with entrance and exit air locks to create a controlled atmosphere through which a series of containers is conveyed by a conveyor belt. The pressure in the shell is kept lower than the pressure in the containers and the atmosphere is made to flow with the containers so that a tracer gas placed in the packages before sealing them will leak more readily, but the leaked tracer gas will remain associated with the leaking package as it moves through the shell. The leaks are detected with a sniffer probe in fluid communication with a gas chromatograph. The gas chromatograph issues a signal when it detects a leak to an ejector that will eject the leaking container from the conveyor. The system is timed so that the series of containers can move continuously into and out of the shell, past the probe and the ejector, without stopping, yet each package is tested for leaks and removed if leaking.

Kronberg, James W. (Aiken, SC)

1995-01-01T23:59:59.000Z

356

Thermoelectric cooling container for medical applications  

SciTech Connect

In this work the thermoelectric cooling container for storing and transportation of the medicine, particularly for insulin, is discussed. In the working volume the temperature is supported on the level of +4 C. The container can work in two operating conditions: with the power supply and without the power supply. Two removable blocks are used for this purpose. One block (thermoelectric) is used for the work with the power supply and another (passive)-for the work without power supply. The thermoelectric block has a 12V power supply, which is used in the automobiles, yachts and other kinds of transport. The temperature in the working volume is supported by the use of the Peltier effect. An electronic device is used in this block and stabilizes temperature on the level of +4 C and indicates information about working conditions. The thermoelectric container has a power supply block for work at 220(110)V. The working temperature in the container can be maintained in the absence of the power supply. In this case the necessary temperature conditions are supported by melting of the crystallized salt. For this purpose the container has a hermetic volume containing this salt and contacting with the working volume.

Aivazov, A.A.; Shtern, Y.I.; Budaguan, B.G.; Makhrachev, K.B.; Pastor, M.

1997-07-01T23:59:59.000Z

357

A Concept for a Low Pressure Noble Gas Fill Intervention in the IFE Fusion Test Facility (FTF) Target Chamber  

SciTech Connect

An engineering evaluation has been initiated to investigate conceptual engineering methods for implementing a viable gas shield strategy in the Fusion Test Facility (FTF) target chamber. The employment of a low pressure noble gas in the target chamber to thermalize energetic helium ions prior to interaction with the wall could dramatically increase the useful life of the first wall in the FTF reactor1. For the purpose of providing flexibility, two target chamber configurations are addressed: a five meter radius sphere and a ten meter radius sphere. Experimental studies at Nike have indicated that a low pressure, ambient gas resident in the target chamber during laser pulsing does not appear to impair the ability of laser light from illuminating targets2. In addition, current investigations into delivering, maintaining, and processing low pressure gas appear to be viable with slight modification to current pumping and plasma exhaust processing technologies3,4. Employment of a gas fill solution for protecting the dry wall target chamber in the FTF may reduce, or possibly eliminate the need for other attenuating technologies designed for keeping He ions from implanting in first wall structures and components. The gas fill concept appears to provide an effective means of extending the life of the first wall while employing mostly commercial off the shelf (COTS) technologies. Although a gas fill configuration may provide a methodology for attenuating damage inflicted on chamber surfaces, issues associated with target injection need to be further analyzed to ensure that the gas fill concept is viable in the integrated FTF design5. In the proposed system, the ambient noble gas is heated via the energetic helium ions produced by target detonation. The gas is subsequently cooled by the chamber wall to approximately 800oC, removed from the chamber, and processed by the chamber gas processing system (CGPS). In an optimized scenario of the above stated concept, the chamber wall acts as the primary heat exchanger. During removal, gas is pumped through the laser ports by turbo molecular-drag pumps (TM-DP). For the purpose of reducing organic based lubricants and seals, a magnetically levitated TM-DP is being investigated with pump manufacturers. Currently, magnetically levitated turbo molecular pumps are commercially available. The pumps will be exposed to thermal loads and ionizing radiation (tritium, Ar-41, post detonation neutrons). Although the TM-DP's will be subjected to these various radiations, current designs for similar pumping devices have been hardened and have the ability of locating control electronics in remote radiation shielded enclosures4. The radiation hardened TM-DP's will be 5 required to operate with minimal maintenance for periods of up to 18 continuous months. As part of this initial investigation for developing a conceptual engineering strategy for a gas fill solution, commercial suppliers of low pressure gas pumping systems have been contacted and engaged in this evaluation. Current technology in the area of mechanical pumping systems indicates that the development of a robust pumping system to meet the requirements of the FTF gas fill concept is within the limits of COTS equipment3,4.

C.A. Gentile, W.R. Blanchard, T.A. Kozub, M. Aristova, C. McGahan, S. Natta, K. Pagdon, J. Zelenty

2010-01-14T23:59:59.000Z

358

SALINITY MANAGEMENT IN THE UPPER COLORADO RIVER BASIN: MODELING, MONITORING, AND COST-EQUITY CHALLENGES.  

E-Print Network (OSTI)

?? Salinity issues in the Upper Colorado River Basin have been a serious concern to the western United States and northern Mexico. The Colorado River (more)

Keum, Jongho

2014-01-01T23:59:59.000Z

359

Analytic model of upper tropospheric clouds in the tropical Hadley cell  

Science Journals Connector (OSTI)

We have developed a two-dimensional analytic model that describes the behavior of upper tropospheric clouds in the tropical Hadley cell. The behavior of the model is...

Kyoko K. Tanaka; Tetsuo Yamamoto; Sei-ichiro Watanabe

2008-03-01T23:59:59.000Z

360

E-Print Network 3.0 - anisotropic upper critical Sample Search...  

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

30 A two-dimensional hybrid method for modeling seismic wave propagation in anisotropic media Summary: upper mantle. We calculated the synthetics for a series of laterally...

Note: This page contains sample records for the topic "upper containment chamber" 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

Molecular Fluorescence accompanying the Twilight Injection of Triethylborane into the Upper Atmosphere  

Science Journals Connector (OSTI)

... fluorescence spectrum, and at the same time to obtain data on the upper atmospheric \\vind from the motion of the released material.

J. M. HOFFMAN; M. A. PALMER; L. B. SMITH

1967-09-09T23:59:59.000Z

362

Nickel based anodes for single chamber solid oxide fuel cells : a catalytic study Geoffroy Gadacz, Sorina Udroiu, Jean-Paul Viricelle, Christophe Pijolat, Michle Pijolat  

E-Print Network (OSTI)

Nickel based anodes for single chamber solid oxide fuel cells : a catalytic study Geoffroy Gadacz Single chamber solid oxide fuel cells (SCFC) are an alternative concept to traditional SOFC-gas-shift equilibrium. Introduction Fifteen years ago, Hibino (1) has shown the feasibility of a fuel cell consisting

Boyer, Edmond

363

Algal growth potentials and heavy-metal concentrations of the primary streams to upper Beaver Lake. Technical completion report  

SciTech Connect

Algal-growth potential was inhibited by heavy metals in upper Beaver Lake, Arkansas. Upper Beaver Lake receives water from three tributaries. One contains a small reservoir and the combined streams receive sewage input. Collections were made approximately monthly at eight sites for the Algal Assay Bottle Test (AABT) and heavy-metal analysis. In general, AABT results indicated that the collections above the sewage input were phosphorus-limited while those below were nitrogen- or combined nitrogen- and phosphorus-limited. Growth inhibition occurred during summer and early fall at various sites with greater inhibition at the confluence of the streams. No inhibitions occurred at the site below the sewage input. Heavy-metal concentrations had an overall tendency to increase downstream. Values within the small reservoir were 50-100% higher than in the feeder stream. Highest values of Pb were observed below the reservoir. SO/sub 4/, Cl, Mg, Ca, Na and K had high values during low flow in August-October. Mn, Pb, and Fe exceeded EPA-recommended standards for drinking water.

Meyer, R.L.; Green, W.R.; Steele, K.F.; Wickliff, D.

1986-06-01T23:59:59.000Z

364

Upper Division Hot Spring Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Division Hot Spring Geothermal Area Division Hot Spring Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Upper Division Hot Spring Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":66.35744679,"lon":-156.7663995,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

365

Thermionic converters for an Integrated Solar Upper Stage (ISUS)  

SciTech Connect

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

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

1996-12-31T23:59:59.000Z

366

Solar wind energy dissipation in the upper atmosphere  

Science Journals Connector (OSTI)

The dissipation of solar wind energy makes an important contribution to the energy budget of the earth's upper atmosphere. Heating and momentum transfer by this energy source generate a permanent disturbance zone in the polar region which is characterized by an increase in the temperature and pressure, strong vertical and horizontal winds, and significant changes in the density structure. Heavier gases like Ar, O2 and N2 are enhanced, He depleted, and O moderately enhanced or depleted depending on the altitude. The extension and latitudinal structure of this disturbance zone sensitively depend on a number of parameters including the level of magnetic activity, the season, local, universal and storm time, and solar activity. The same parameters also determine the magnitude of the perturbation. Changes outside the disturbance zone are relatively small and are characterized by an increase of all gas constituents. Whereas present models do provide a first order description, more sophisticated algorithms are needed for a satisfactory representation of the disturbance effects.

G.W. Prlss

1983-01-01T23:59:59.000Z

367

A steerable UV laser system for the calibration of liquid argon time projection chambers  

E-Print Network (OSTI)

A number of liquid argon time projection chambers (LAr TPC's) are being build or are proposed for neutrino experiments on long- and short baseline beams. For these detectors a distortion in the drift field due to geometrical or physics reasons can affect the reconstruction of the events. Depending on the TPC geometry and electric drift field intensity this distortion could be of the same magnitude as the drift field itself. Recently, we presented a method to calibrate the drift field and correct for these possible distortions. While straight cosmic ray muon tracks could be used for calibration, multiple coulomb scattering and momentum uncertainties allow only a limited resolution. A UV laser instead can create straight ionization tracks in liquid argon, and allows one to map the drift field along different paths in the TPC inner volume. Here we present a UV laser feed-through design with a steerable UV mirror immersed in liquid argon that can point the laser beam at many locations through the TPC. The straight ionization paths are sensitive to drift field distortions, a fit of these distortion to the linear optical path allows to extract the drift field, by using these laser tracks along the whole TPC volume one can obtain a 3D drift field map. The UV laser feed-through assembly is a prototype of the system that will be used for the MicroBooNE experiment at the Fermi National Accelerator Laboratory (FNAL).

A. Ereditato; I. Kreslo; M. Lthi; C. Rudolf von Rohr; M. Schenk; T. Strauss; M. Weber; M. Zeller

2014-10-04T23:59:59.000Z

368

Computer-based on-line pulsed ionization chamber plasma diagnostic system  

SciTech Connect

A pulsed ionization chamber (PIC) plasma diagnostic system described previously for use in the study of ionized gas kinetics for rare gases and their mixtures including He(UF/sub 6/)-a candidate gas core reactor/magnetohydrodynamic (MHD) converter working fluid and a component in wide range radiation field measurement systems has been upgraded in performance to include computer-controlled data acquisition, storage, processing, graphic analysis, and presentation. The current automated system, whose performance is being reported and whose block diagram is shown, is developed around a Macintosh SE microcomputer, IEEE-488 (GPIB) instruments, and a National Instruments interface controller. The results shown not only demonstrate the improved wide-range voltage signal measurement capability of the new PIC system (e.g., from millivolts to tens of volts) but also illustrate the system's capability of easily producing print-ready graphics of experimental data. From automation to report preparation, the new system promises to greatly facilitate the overall process of our experimental plasma diagnostic program and should aid in the implementation in our study of a series of gas core reactor fuel gas/MHD converter working fluids.

Choi, W.Y.; Park, J.S.; Baumgartner, M.J.; Ellis, W.H.

1988-01-01T23:59:59.000Z

369

Pressure Evolution in the Chamber of a Dense Plasma Focus Device  

Science Journals Connector (OSTI)

Adsorption and desorption of impurities in the filling gas by the electrodes the insulator and chamber materials of plasma focus devices have been suggested as probable causes for the fluctuations in their neutron yield. This work describes analysis of data aimed at looking for evidence to support this hypothesis. Before starting each series of discharges a vacuum around 10?6 torr is achieved. The filling gas pure deuterium is maintained under static conditions. A sudden fall of the initial pressure around 5% is systematically observed after the first shot in each series before creeping back at an almost constant rate in successive shots. On the other hand for the first shot with fresh filling gas the neutron yield is always low and systematically increases for the second one. Except for the first two shots we find no evidence to support the hypothesis that the neutron yield fluctuations are related to an adsorption?desorption process. It is also observed that as the number of shots increases for each series the neutron yield variability tends to increase as higher yields are obtained for a few shots.

J. J. E. Herrera; F. Castillo; J. Rangel

2006-01-01T23:59:59.000Z

370

Piercing tool, Transportation Accident Resistant Container (TARC)  

SciTech Connect

Transportation Accident Resistant Containers (TARC)s are used for enhanced safety during movement of nuclear weapons. Its design features a tough stainless steel outer skin, redwood for impact mitigation and fire protection and a rugged aluminum inner container. Redwood absorbs impact energy by crushing, similar to the way foam crushes in other containers. Redwood also functions to insulate the weapon from heat and fire. When a TARC is involved in a fire, the redwood will slowly burn forming a good insulating char. The redwood can continue to smolder once the fire is out. To ensure the smolder is extinguished, water can be directed into any accident caused hole in the skin. If no hole exists, it may be necessary to create one. This document discusses tool selection, testing, and a simple but effective method of creating an access hole in the outer skin large enough to apply fire fighting techniques.

Lari, P.

1994-08-01T23:59:59.000Z

371

Why sequence dehalobacter-containing dechlorinating community?  

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

dehalobacter-containing dehalobacter-containing dechlorinating community? One of the most common types of environmental contaminants, especially in groundwater, is chlorinated solvents. Often used as degreasing agents or for dry cleaning, these compounds have toxic properties and contaminate more than 50,000 groundwater sites throughout North America. Studies have identified several microbial species that can break down these compounds and harness the energy for their own uses. The most studied dechlorinating organisms are from the Dehalococcoides genus. Some chlorinating organisms have been shown to inhibit the growth of a second group of dehalorespiring organisms - these break down chlorinated ethanes and ethenes - known as Dehalobacter. collecting ground water samples Photo: istockphoto

372

Cells having cathodes containing polycarbon disulfide materials  

DOE Patents (OSTI)

The present invention relates to an electric current producing cell which contains an anode, a cathode having as a cathode-active material one or more carbon-sulfur compounds of the formula (CS.sub.x).sub.n, in which x takes values from 1.2 to 2.3 and n is greater or equal to 2, and where the redox process does not involve polymerization and de-polymerization by forming and breaking S--S bonds in the polymer backbone. The cell also contains an electrolyte which is chemically inert with respect to the anode and the cathode.

Okamoto, Yoshi (Fort Lee, NJ); Skotheim, Terje A. (Shoreham, NY); Lee, Hung S. (Rocky Point, NY)

1995-08-15T23:59:59.000Z

373

Cells having cathodes containing polycarbon disulfide materials  

DOE Patents (OSTI)

The present invention relates to an electric current producing cell which contains an anode, a cathode having as a cathode-active material one or more carbon-sulfur compounds of the formula (CS{sub x}){sub n}, in which x takes values from 1.2 to 2.3 and n is greater or equal to 2, and where the redox process does not involve polymerization and de-polymerization by forming and breaking S--S bonds in the polymer backbone. The cell also contains an electrolyte which is chemically inert with respect to the anode and the cathode. 5 figs.

Okamoto, Y.; Skotheim, T.A.; Lee, H.S.

1995-08-15T23:59:59.000Z

374

Comparisons of VUU (Vlasov-Uehling-Uhlenbeck) predictions with streamer chamber data  

SciTech Connect

Experimental charged particle inclusive and exclusive parameters for several nuclear systems are compared with microscopic model predictions based on the Vlasov-Uehling-Uhlenbeck equation, for various density-dependent nuclear equations of state (EOS). Inclusive variables and multiplicity distributions are in good agreement, and are not sensitive to the EOS. Rapidity spectra show evidence of being useful in determining whether the model uses the correct sections for binary collisions in the nuclear medium, and whether momentum dependent interactions are correctly incorporated. Sideward flow parameters do not favor the same nuclear incompressibility at all multiplicities, and there are indications that the present model may provide only an upper limit on the true stiffness of the EOS. Findings relating to impact parameter averaging and the mass and energy dependence of transverse flow are also presented. 24 refs., 6 figs., 1 tab.

Keane, D.; Chu, S.Y.; Fung, S.Y.; Liu, Y.M.; Qiao, L.J.; VanDalen, G.; Vient, M.; Wang, S.; Molitoris, J.J.; Stoecker, H.

1987-01-01T23:59:59.000Z

375

What can the Upper Colorado basin expect this winter? Klaus Wolter  

E-Print Network (OSTI)

. Upper Colorado basin appears marginal at best! #12;What are typical impacts in Western U.S.? FebWhat can the Upper Colorado basin expect this winter? Klaus Wolter NOAA-Earth System Research Lab & University of Colorado at Boulder-CIRES · ENSO: current situation, typical impacts, and outlook · What about

376

Cognitive Issues in Upper-Division Electricity & Magnetism Steven J. Pollock  

E-Print Network (OSTI)

interventions ­at the upper division. Keywords: physics education research, course reform, electricityCognitive Issues in Upper-Division Electricity & Magnetism Steven J. Pollock and Stephanie V. Chasteen* * Science Education Initiative, University of Colorado, Boulder, CO 80309, USA Department

Colorado at Boulder, University of

377

Observations on student difficulties with mathematics in upper-division electricity and magnetism  

E-Print Network (OSTI)

Observations on student difficulties with mathematics in upper-division electricity and magnetism Rachel E. Pepper, Stephanie V. Chasteen, Steven J. Pollock, and Katherine K. Perkins Science Education 2011; published 27 March 2012) We discuss common difficulties in upper-division electricity

Colorado at Boulder, University of

378

Crustal and upper mantle structure of southernmost South America inferred from regional waveform inversion  

E-Print Network (OSTI)

Crustal and upper mantle structure of southernmost South America inferred from regional waveform; published 24 January 2003. [1] We determine the crustal and upper mantle structure of southern South America Information Related to Geographic Region: South America; KEYWORDS: niching genetic algorithm, regional

379

Upper Permian vertebrates and their sedimentological context in the South Urals, Russia  

E-Print Network (OSTI)

Upper Permian vertebrates and their sedimentological context in the South Urals, Russia Valentin P,* a Geological Institute of Saratov University, Ulitsa Moskovskaya, 161, Saratov 410075, Russia b Department in the Upper Permian of the Southern Urals area of European Russia. The first sites were found in the 1940s

Benton, Michael

380

Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind  

E-Print Network (OSTI)

Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind Y. I. An updated empirical climatic zonally aver- aged prevailing wind model for the upper mesosphere/ lower of monthly mean winds from meteor radar and MF radar measurements at more than 40 stations, well distributed

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "upper containment chamber" 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

A modified algorithm for computing the upper-bound reliabilty of computer networks  

Science Journals Connector (OSTI)

This paper presents a modified algorithm to node elimination process for computing the upper-bound reliability of two-terminal networks. The algorithm has two technique; nodes removal and decomposition technique. The first technique is a modified algorithm ... Keywords: Computer networks, Network reliability, Networks decomposition, Nodes removal, The upper bound reliability

Y. B. Mahdy, A. Younes, M. A. Soliman, M. H. Abdellha

2005-01-01T23:59:59.000Z

382

Long-Term Sediment Generation Rates for the Upper Rio Chagres Basin: Implications for Panama  

E-Print Network (OSTI)

Chapter 19 Long-Term Sediment Generation Rates for the Upper Rio Chagres Basin: Implications: We measured in situ-produced cosmogenic 10 Be in 17 sand-sized sediment samples (0.25 to 0.85 mm) to estimate the rate and distribution of sediment generation in the upper Chagres watershed over the last 10

Nichols, Kyle K.

383

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES,  

E-Print Network (OSTI)

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES and July 1973 at Shrub and Upper Klawasi mud volcanoes 8 ii #12;HYDROTHERMAL ACTIVITY AND CARBON. Map of diffuse carbon dioxide flow from soils near the summit of Shrub mud volcano 9 TABLES 1

384

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean  

E-Print Network (OSTI)

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean;Abstract Processes which control the upper ocean thermohaline structure in the western equa- torial Pacific forcing data have indicated that the thick isothermal layer in the western equatorial Pacific is found

Luther, Douglas S.

385

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal Decomposition  

E-Print Network (OSTI)

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal of a large-scale upper ocean circulation in the tropic Pacific domain. We construct different POD models-scale seasonal variability of the tropic Pacific obtained by the original model is well captured by a low

Aluffi, Paolo

386

Functionalized lignin, rubber containing functionalized lignin and products containing such rubber composition  

DOE Patents (OSTI)

The invention relates to functionalized lignin, rubber compositions which contain functionalized lignin and to products which have at least one component comprised of such rubber composition.

Benko, David Andrew; Hahn, Bruce Raymond; Cohen, Martin Paul; Dirk, Shawn Matthew; Cicotte, Kirsten Nicole

2014-03-04T23:59:59.000Z

387

Fault-tolerant search of container codes  

Science Journals Connector (OSTI)

This paper describes a method to locate and recognize container code characters. This method is aimed to make more fault-tolerant a system based on tophat transformation, segmentation algorithms, filters and classifiers. Our aim is to be able to find ... Keywords: character recognition, computer vision, segmentation

Juan Rosell; Gabriela Andreu; Alberto Prez

2006-08-01T23:59:59.000Z

388

Fault-tolerant search of container codes  

Science Journals Connector (OSTI)

This paper describes a method to locate and recognize container code characters. This method is aimed to make more fault-tolerant a system based on tophat transformation, segmentation algorithms, filters and classifiers. Our aim is to be able to find ... Keywords: character recognition, computer vision, segmentation

Juan Rosell; Gabriela Andreu; Alberto Prez

2006-09-01T23:59:59.000Z

389

Electrodialysis regeneration of chromium-containing solutions  

SciTech Connect

The authors describe a process based on a combination of electrodialysis and continuous ion exchange for the purification of chromium-containing waste water resulting from chromium plating processes and for the recovery and recycling of both the chromium and the water. Treatment and monitoring equipment is described and energy consumption scenarios are optimized for chromium removal efficiency.

Kizim, N.F.; Lar'kov, A.P.; Sharova, E.Yu.

1987-10-10T23:59:59.000Z

390

Feasibility of Magnetostrictive Sensor Inspection of Containments  

SciTech Connect

This report describes the results of a study on the feasibility of using guided waves for long-range global inspection of containment metallic pressure boundaries (i.e., steel containments and liners of reinforced concrete containments) in nuclear power plants. Of particular concern in this study was the potential of the guided-wave approach for remotely inspecting the regions that are inaccessible; for example, regions where the metallic pressure boundary is backed by concrete on one or both sides. The study includes a literature review on long-range guided-wave inspection techniques, a modeling study of the behavior of guided waves in plates with different boundary conditions (e.g., freestanding and backed by concrete on one or both sides), and an experimental investigation of the feasibility of a guided-wave technique called ''magnetostrictive sensor (MsS)'' for (1) generating and detecting guided waves in plates and (2) detecting a defect over a long range. Results of the study showed (1) that it is feasible to achieve long-range global inspection of plates, including regions that are inaccessible, using low-frequency guided waves and (2) that the MsS technique is well suited for this application. Recommendations are made to further test and develop the MsS technique for practical implementation for containment inspection in nuclear power plants.

Kwun, H.

1999-03-01T23:59:59.000Z

391

Prioritisation of test suites containing precedence constraints  

E-Print Network (OSTI)

1 Prioritisation of test suites containing precedence constraints Tim Miller Department@unimelb.edu.au Abstract--Test case prioritisation is the process of ordering the exe- cution of test cases to achieve a certain goal, such as increasing the rate of fault detection. Many existing test case prioritisation

Miller, Tim

392

OXYGEN ADSORPTION ON NITROGEN CONTAINING CARBON SURFACES  

E-Print Network (OSTI)

OXYGEN ADSORPTION ON NITROGEN CONTAINING CARBON SURFACES Alejandro Montoya, Jorge O. Gil, Fanor-rich site of the carbon basal plane of graphite and then, it dissociates into oxygen atoms.1,2 Oxygen atoms at the edge of the carbon surface can form covalent bonds with oxygen. These sites can chemisorb

Truong, Thanh N.

393

Divertor target for magnetic containment device  

DOE Patents (OSTI)

In a plasma containment device of a type having superconducting field coils for magnetically shaping the plasma into approximately the form of a torus, an improved divertor target for removing impurities from a "scrape off" region of the plasma comprises an array of water cooled swirl tubes onto which the scrape off flux is impinged. Impurities reflected from the divertor target are removed from the target region by a conventional vacuum getter system. The swirl tubes are oriented and spaced apart within the divertor region relative to the incident angle of the scrape off flux to cause only one side of each tube to be exposed to the flux to increase the burnout rating of the target. The divertor target plane is oriented relative to the plane of the path of the scrape off flux such that the maximum heat flux onto a swirl tube is less than the tube design flux. The containment device is used to contain the plasma of a tokamak fusion reactor and is applicable to other long pulse plasma containment systems.

Luzzi, Jr., Theodore E. (Garden City, NY)

1982-01-01T23:59:59.000Z

394

Apparatus for distilling shale oil from oil shale  

SciTech Connect

An apparatus for distilling shale oil from oil shale comprises: a vertical type distilling furnace which is divided by two vertical partitions each provided with a plurality of vent apertures into an oil shale treating chamber and two gas chambers, said oil shale treating chamber being located between said two gas chambers in said vertical type distilling furnace, said vertical type distilling furnace being further divided by at least one horizontal partition into an oil shale distilling chamber in the lower part thereof and at least one oil shale preheating chamber in the upper part thereof, said oil shale distilling chamber and said oil shale preheating chamber communication with each other through a gap provided at an end of said horizontal partition, an oil shale supplied continuously from an oil shale supply port provided in said oil shale treating chamber at the top thereof into said oil shale treating chamber continuously moving from the oil shale preheating chamber to the oil shale distilling chamber, a high-temperature gas blown into an oil shale distilling chamber passing horizontally through said oil shale in said oil shale treating chamber, thereby said oil shale is preheated in said oil shale preheating chamber, and a gaseous shale oil is distilled from said preheated oil shale in said oil shale distilling chamber; and a separator for separating by liquefaction a gaseous shale oil from a gas containing the gaseous shale oil discharged from the oil shale preheating chamber.

Shishido, T.; Sato, Y.

1984-02-14T23:59:59.000Z

395

Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) |  

Open Energy Info (EERE)

Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) Exploration Activity Details Location Upper Hot Creek Ranch Area Exploration Technique Geothermometry Activity Date Usefulness useful DOE-funding Unknown Notes Ten water samples were collected for chemical analysis and interpretation. Analyses of three samples of the UHCR thermal give predicted subsurface temperatures ranging from 317 to 334 oF from the Na-K-Ca, silica (quartz), and Na-Li geothermometers. The fact that all three thermometers closely agree gives the predictions added credibility. References Dick Benoit, David Blackwell (2006) Exploration Of The Upper Hot

396

EIS-0408: Upper Great Plains Programmatic Wind EIS | Department of Energy  

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

8: Upper Great Plains Programmatic Wind EIS 8: Upper Great Plains Programmatic Wind EIS EIS-0408: Upper Great Plains Programmatic Wind EIS Summary This EIS, being prepared jointly by DOE's Western Area Power Administration and the Department of the Interior's Fish and Wildlife Service, will evaluate the environmental impacts of wind energy development in Iowa, Minnesota, Montana, Nebraska, North Dakota, and South Dakota - Western's Upper Great Plains customer service region. Western will use the EIS to implement a comprehensive regional program to manage interconnection requests for wind energy projects. Public Comment Opportunities None available at this time. Documents Available for Download March 22, 2013 EIS-0408: Draft Programmatic Environmental Impact Statement Upper Great Plains Programmatic Wind EIS

397

GAISUS-1 thermionic converter for the integrated solar upper stage  

SciTech Connect

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

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

1997-12-31T23:59:59.000Z

398

Evaluating Radiative Closure in the Middle-to-Upper Troposhere  

SciTech Connect

This project had two general objectives. The first is the characterization and improvement of the radiative transfer parameterization in strongly absorbing water vapor bands, as these strongly absorbing bands dictate the clear sky radiative heating rate. The second is the characterization and improvement of the radiative transfer in cirrus clouds, with emphasis on ensuring that the parameterization of the radiative transfer is consistent and accurate across the spectrum. Both of these objectives are important for understanding the radiative processes in the mid-to-upper troposphere. The research on this project primarily involved analysis of data from the First and Second Radiative Heating in Underexplored Bands Campaigns, RHUBC-I and II. This included a climate model sensitivity study using results from RHUBC-I. The RHUBC experiments are ARM-funded activities that directly address the objectives of this research project. A secondary effort was also conducted that investigated the trends in the long-term (~14 year) dataset collected by the Atmospheric Emitted Radiance Interferometer (AERI) at the ARM Southern Great Plains site. This work, which was primarily done by a post-doc at the University of Wisconsin ???????¢???????????????? Madison under Dr. Turner???????¢????????????????s direction, uses the only NIST-traceable instrument at the ARM site that has a well-documented calibration and uncertainty performance to investigate long-term trends in the downwelling longwave radiance above this site.

Tobin, David C; Turner, David D; Knuteson, Robert O

2013-01-02T23:59:59.000Z

399

Diagenesis of upper Cretaceous Teapot sandstones, Powder River basin, Wyoming  

SciTech Connect

The Upper Cretaceous Teapot sandstones of Well Draw field, Converse County, Wyoming, are turbidite fan deposits bounded stratigraphically by marine shales. They presently occur from 6360 to 7200 ft (1920 to 2195 m), dipping to the northwest. Cored samples selected from nonbioturbated A bedsets show that the sandstones are fine to very fine-grained feldspathic litharenites. Major authigenic minerals include carbonate cement, quartz overgrowths, and clay minerals. The clay minerals originated either as alteration rims on detrital silicates or as precipitated from pore fluids. Alteration rims typically consist of illite, smectite, mixed layer illite/smectite, and lesser chlorite. Feldspars are altered to kaolinite. Precipitated clays occur as thin, unoriented, grain coating chlorite and kaolinite; pore lining mixed layer illite/smectite and lesser chlorite oriented with (001) normal to the pore wall; and unoriented, poorly crystalline, pore filling chlorite. The diagenetic sequence is: compaction and limited quartz overgrowth development; complete calcite cementation and precipitation of grain-coating clays; dissolution of carbonate cement; precipitation of pore lining and later pore filling clays; and development of second stage quartz overgrowths. Development of silicate alteration rims occurred throughout the diagenetic history. Dissolution of carbonate cement produced the majority of present-day porosity; however, this secondary porosity was reduced by precipitation of clays minerals. In the downdip sandstones, hydrodynamic flow and an increase in the abundance of detrital labile grains have caused an increased abundance of clay mineral precipitates, reducing the reservoir potential. The pore fluids which controlled sandstones diagenesis were likely provided by dewatering and diagenesis of enclosing shales.

Conner, S.P.; Tieh, T.T.

1984-04-01T23:59:59.000Z

400

A new two-dimensional X-ray drift chamber for diffraction studies with pulsed synchroton radiation  

Science Journals Connector (OSTI)

A two-dimensional position-sensitive detector (drift-chamber) for X-ray difraction experiments with pulsed synchrotron radiation is described. For the measurements of drift direction (x), the small drift chamber uses a reference signal generated by the electron bunches circulating in the storage ring. A flat geometry delay-line, inductively connected to the anode, detects the position of avalanche electrons on the anode wire (y-direction). The main features are: spatial resolution in drift direction (x), 100 ?m for 5 keV photons; spatial resolution in y direction, 400 ?m; maximum counting-rate 5105 cps; quantum efficiency ar 5 keV, 52%. The systems has been succesfully tested at the ADONE storage ring at Frascati by measuring the small-angle diffraction spectrum of a dry tendon collagen.

Mario Iannuzzi; Andrea La Monaca

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Characterization and use of a 2D-array of ion chambers for brachytherapy dosimetric quality assurance  

SciTech Connect

The two-dimensional (2D) ionization chamber array MatriXX Evolution is one of the 2D ionization chamber arrays developed by IBA Dosimetry (IBA Dosimetry, Germany) for megavoltage real-time absolute 2D dosimetry and verification of intensity-modulated radiation therapy (IMRT). The purpose of this study was to (1) evaluate the performance of ion chamber array for submegavoltage range brachytherapy beam dose verification and quality assurance (QA) and (2) use the end-to-end dosimetric evaluation that mimics a patient treatment procedure and confirm the primary source strength calibration agrees in both the treatment planning system (TPS) and treatment delivery console computers. The dose linearity and energy dependence of the 2D ion chamber array was studied using kilovoltage X-ray beams (100, 180 and 300 kVp). The detector calibration factor was determined using 300 kVp X-ray beams so that we can use the same calibration factor for dosimetric verification of high-dose-rate (HDR) brachytherapy. The phantom used for this measurement consists of multiple catheters, the IBA MatriXX detector, and water-equivalent slab of RW3 to provide full scattering conditions. The treatment planning system (TPS) (Oncentra brachy version 3.3, Nucletron BV, Veenendaal, the Netherlands) dose distribution was calculated on the computed tomography (CT) scan of this phantom. The measured and TPS calculated distributions were compared in IBA Dosimetry OmniPro-I'mRT software. The quality of agreement was quantified by the gamma ({gamma}) index (with 3% delta dose and distance criterion of 2 mm) for 9 sets of plans. Using a dedicated phantom capable of receiving 5 brachytherapy intralumenal catheters a QA procedure was developed for end-to-end dosimetric evaluation for routine QA checks. The 2D ion chamber array dose dependence was found to be linear for 100-300 kVp and the detector response (k{sub user}) showed strong energy dependence for 100-300 kVp energy range. For the Ir-192 brachytherapy HDR source, dosimetric evaluation k{sub user} factor determined by photon beam of energy of 300 kVp was used. The maximum mean difference between ion chamber array measured and TPS calculated was 3.7%. Comparisons of dose distribution for different test plans have shown agreement with >94.5% for {gamma} {<=}1. Dosimetric QA can be performed with the 2D ion chamber array to confirm primary source strength calibration is properly updated in both the TPS and treatment delivery console computers. The MatriXX Evolution ionization chamber array has been found to be reliable for measurement of both absolute dose and relative dose distributions for the Ir-192 brachytherapy HDR source.

Yewondwossen, Mammo, E-mail: mammo.yewondwossen@cdha.nshealth.ca [Department of Radiation Oncology, Dalhousie University, Halifax, Nova Scotia (Canada)

2012-10-01T23:59:59.000Z

402

The UHV Experimental Chamber For Optical Measurements (Reflectivity and Absorption) and Angle Resolved Photoemission of the BEAR Beamline at ELETTRA  

SciTech Connect

The experimental station of the BEAR (Bending magnet for Emission, Absorption and Reflectivity) beamline at ELETTRA (Trieste, Italy) is an UHV chamber conceived to fully exploit the spectroscopic possibilities offered by the light spot produced by the beamline. Spectroscopies include reflectivity ({theta}-2{theta} and diffuse), optical absorption, fluorescence and angle resolved photoemission. The chamber can be rotated around the beam axis to select the s (TE) or p (TM) incidence conditions and/or the position of the ellipse of polarization with respect to the sample. Photon detectors (e.g. photodiodes) and electron detector (hemispherical analyzer - 1 deg. angular resolution, 20 meV energy resolution) cover about completely the full 2{pi} solid angle above the sample surface in any light incidence condition.

Pasquali, L.; Nannarone, S. [UdR-INFM Modena, Universita di Modena and Reggio Emilia, Via Vignolese 905, 41100 Modena (Italy); Dipartimento di Ingegneria dei Materiali e dell'Ambiente, Universita di Modena and Reggio Emilia, Via Vignolese 905, 41100 Modena (Italy); De Luisa, A. [TASC-INFM, MM building in Area Science Park, s.s.14 km 163.5, 34012 Basovizza, Trieste (Italy)

2004-05-12T23:59:59.000Z

403

Homogeneous nucleation rates of higher n -alcohols measured in a laminar flow diffusion chamber  

Science Journals Connector (OSTI)

Nucleation rate isotherms of n-butanol n-pentanol n-hexanol n-heptanol and n-octanol were measured in a laminar flowdiffusion chamber using helium as carrier gas. The measurements were made at 250310 K corresponding to reduced temperatures of 0.430.50 and at atmospheric pressure. Experimental nucleation rate range was from 10 3 to 10 7 ? cm ?3 ? s ?1 . The expression and accuracy of thermodynamic parameters in particular equilibrium vapor pressure were found to have a significant effect on calculated nucleation rates. The results were compared to the classical nucleation theory (CNT) the self-consistency corrected classical theory (SCC) and the Hales scaled model of the CNT. The average ratio between the experimental and theoretical nucleation rates for all alcohols used was 1.510 3 when the CNT was used and 0.210 ?1 when the SCC was used and 0.710 ?1 when the Hales scaled theory was used. The average values represent all the alcohols used at the same reduced temperatures. The average ratio was about the same throughout the temperature range although J exp /J the calculated with the Hales scaled theory increased slightly with increasing temperature. The saturation ratio dependency was predicted closest to experiment with the classical nucleation theory. The nucleation rates were compared to those found in the literature. The measurements were in reasonable agreement with each other. The molecular content of critical alcohol clusters was between 35 and 80 molecules. At a fixed reduced temperature the number of molecules in a critical cluster decreased as a function of alcohol carbon chain length. The number of molecules in critical clusters was compared to those predicted by the Kelvin equation. The theory predicted the critical cluster sizes well.

Antti-Pekka Hyvrinen; Heikki Lihavainen; Yrj Viisanen; Markku Kulmala

2004-01-01T23:59:59.000Z

404

Scintillation counter and wire chamber front end modules for high energy physics experiments  

SciTech Connect

This document describes two front-end modules developed for the proposed MIPP upgrade (P-960) experiment at Fermilab. The scintillation counter module was developed for the Plastic Ball detector time and charge measurements. The module has eight LEMO 00 input connectors terminated with 50 ohms and accepts negative photomultiplier signals in the range 0.25...1000 pC with the maximum input voltage of 4.0 V. Each input has a passive splitter with integration and differentiation times of {approx}20 ns. The integrated portion of the signal is digitized at 26.55 MHz by Analog Devices AD9229 12-bit pipelined 4-channel ADC. The differentiated signal is discriminated for time measurement and sent to one of the four TMC304 inputs. The 4-channel TMC304 chip allows high precision time measurement of rising and falling edges with {approx}100 ps resolution and has internal digital pipeline. The ADC data is also pipelined which allows deadtime-less operation with trigger decision times of {approx}4 {micro}s. The wire chamber module was developed for MIPP EMCal detector charge measurements. The 32-channel digitizer accepts differential analog signals from four 8-channel integrating wire amplifiers. The connection between wire amplifier and digitizer is provided via 26-wire twist-n-flat cable. The wire amplifier integrates input wire current and has sensitivity of 275 mV/pC and the noise level of {approx}0.013 pC. The digitizer uses the same 12-bit AD9229 ADC chip as the scintillator counter module. The wire amplifier has a built-in test pulser with a mask register to provide testing of the individual channels. Both modules are implemented as a 6Ux220 mm VME size board with 48-pin power connector. A custom europack (VME) 21-slot crate is developed for housing these front-end modules.

Baldin, Boris; DalMonte, Lou; /Fermilab

2011-01-01T23:59:59.000Z

405

Development of a bellows chamber with a comb-type RF shield for high-current accelerators  

Science Journals Connector (OSTI)

An all-metal bellows chamber with a comb-type Radio Frequency (RF) shield for a high-current accelerator was developed and tested at the KEK B-factory (KEKB). The comb-type RF shield has no thin fingers but has nested comb teeth instead at an inner surface. The comb-type RF-shield has a higher thermal strength structurally compared to the conventional finger-type one. Leakage of the TE mode like HOM through the RF shield is almost suppressed. Two test models of bellows chambers installed in the 3.5GeV positron ring of KEKB showed good properties up to a stored beam current of 1.5A. The temperature rise of the corrugation was about 7C and the temperature rise was about 16 of that of the bellows chamber with a conventional finger-type RF shield located under the same condition. The temperature rise of the comb teeth was about 22C, while that of fingers of the finger-type RF shield was estimated to be about 105C for the equivalent HOM power. No vacuum arcing was detected during beam operation.

Y. Suetsugu; M. Shirai; K. Shibata; K. Murata; M. Kaneko; K. Sakamoto; K. Sugisaki; M. Kawahara

2004-01-01T23:59:59.000Z

406

Nanosecond Lipid Dynamics in Membranes Containing Cholesterol  

SciTech Connect

Lipid dynamics in the cholesterol-rich (40 mol%) liquid-ordered (lo) phase of dimyristoylphosphatidylcholine membranes were studied using neutron spin-echo and neutron backscattering. Recent theoretical and experimental evidence supports the notion of the liquid-ordered phase in phospholipid membranes as a locally structured liquid, with small ordered domains of a highly dynamic nature in equilibrium with a disordered matrix [S. Meinhardt, R. L. C. Vink and F. Schmid, Proc. Natl. Acad. Sci. U. S. A., 2013, 110(12), 4476 4481, C. L. Armstrong et al., PLoS One, 2013, 8(6), e66162]. This local structure was found to have a pronounced impact on the membranes' dynamical properties. We found that the long-wavelength dynamics in the liquid-ordered phase, associated with the elastic properties of the membranes, were faster by two orders of magnitude as compared to the liquid disordered phase. At the same time, collective nanoscale diffusion was significantly slower. The presence of a soft-mode (a slowing down) in the longwavelength dispersion relationship suggests an upper size limit for the ordered lipid domain of ~220 A. Moreover, from the relaxation rate of the collective lipid diffusion of lipid lipid distances, the lifetime of these domains was estimated to be about 100 nanoseconds.

Armstrong, Clare L [McMaster University] [McMaster University; Haeussler, Wolfgang [FRM-II, Technische Universitaet Munchen] [FRM-II, Technische Universitaet Munchen; Seydel, Tilo [Institut Laue-Langevin (ILL)] [Institut Laue-Langevin (ILL); Katsaras, John [ORNL] [ORNL; Rheinstadter, Maikel C [McMaster University] [McMaster University

2014-01-01T23:59:59.000Z

407

Syracuse University Test Report On Uptake Factor Resulting From A Dropped Storage Container  

SciTech Connect

Under certain circumstances, powder from an accidently dropped container can become airborne and inhaled by people nearby such as those who are moving the containers. The inhaled fine particles can deposit on respiratory tracts and lungs, causing asthma, lung cancer, and other acute respiratory illnesses and chronic symptoms. The objective of this study was to develop a standard procedure to measure the airborne concentrations of different size particles within the vicinity of a dropped container where a significant portion of the contained powder is ejected. Tungsten oxide (WO{sub 3}) was selected in this study to represent relatively heavy powders (7.16 g/cm3 specific gravity for WO{sub 3}). A typical can with the outer dimensions of 4.25 diameter and 4.875 tall was used as the container. The powder was dropped in two different configurations: 1) contained within a can covered by a lid that has a 0.25 diameter hole, and 2) contained within a can without a lid. The packing volume of the powder was 51.4 in{sup 3} (842.7 cm{sup 3}) and the target mass was 1936 g. The tests were carried out in a full-scale stainless steel environmental chamber with an interior volume of 852 ft{sup 3} (24.1 m{sup 3}). The chamber system includes an internal recirculation loop with a rectangular air diffuser and 10 variable frequency drive fans to provide a typical room air recirculation flow pattern. Two air filters were installed in the chamber air supply duct and return duct to achieve the required low background particle concentration. The initial chamber air conditions were set at 70F ( 5F) and 50% ( 10%) RH. A supporting frame and releasing device were designed and built to trigger consistently the dropping of the can at a height of 8 feet from the bottom of the can to the impacting surface. The particle sampling inlet was placed 5 ft above the floor and 6 inches laterally away from the cans falling path. Concentrations of particles between 0.5 ?m and 20 ?m were recorded in units of mass and number of particles per unit volume. The data acquisition rate was once every 2 seconds during the first 2 hours and every 20 seconds thereafter. A test procedure was developed and a total of nine drop tests were performed. In most cases (seven tests), the can tipped over after dropping. The can in Test 1 stayed upright. The can in Test 7 showed a special behavior: after the rebound, it turned upside down and stayed upright. Major findings are summarized below: ? The amount of spilled powder varied from 0.12 g to 252.35 g and the non-recovered powder varied from 0.11 g to 1.18 g. The corresponding percentage of the spilled powder ranged from 0.01% to 13%. ? The peak value of particle number concentration after the dropping of the can occurred at approximately 0.9 ?m particle size per measured data of individual channels. The peak value of particle mass concentration occurred in the range of 4.3 - 10 ?m particle size per grouped data calculated from the measured data with the exception of Test 4 where a different batch powder with unexpectedly different bulk density and particle size distribution. ? After the dropping of the can, the total airborne mass concentrations ranged from 0.03 to 0.35 mg/m{sup 3}, while the total airborne number concentrations ranged from 2 to 125 #/cm{sup 3} except for Test 4. The number concentration in Test 4 was 1 or 2 orders of magnitude less than those of other tests because the powder was from a different batch. However, its mass concentration was comparable to that in Test 7 because relatively more big airborne particles were detected in Test 4. In general, tests with lid (Test 5, 6, 7 and 8) had smaller concentrations than tests without lid (Test 0, 1, 2, and 3). The influence of lid was not as prominent as the powder (Test 4). However, this needs more tests for verification. ? The ratio of airborne mass to non-recovered mass ranged from 0.1% to 2%. This means that it is challenging to use this method to check the mass balance, while the uptake factor and associated inhalation exposur

Gao, Z.; Zhang, J. S.

2010-09-01T23:59:59.000Z

408

Energy implications of glass-container recycling  

SciTech Connect

This report addresses the question of whether glass-container recycling actually saves energy. Glass-container production in 1991 was 10{sup 7} tons, with cullet making up about 30% of the input to manufacture. Two-thirds of the cullet is postconsumer waste; the remainder is in-house scrap (rejects). Most of the glass recycled is made into new containers. Total primary energy consumption includes direct process-energy use by the industry (adjusted to account for the efficiency of fuel production) plus fuel and raw-material transportation and production energies; the grand total for 1991 is estimated to be about 168 {times} 10{sup 12} Btu. The total primary energy use decreases as the percent of glass recycled rises, but the maximum energy saved is only about 13%. If distance to the landfill is kept fixed and that to the recovery facility multiplied by about eight, to 100 mi, a break-even point is reached, and recycling saves no energy. Previous work has shown that to save energy when using glass bottles, reuse is the clear choice. Recycling of glass does not save much energy or valuable raw material and does not reduce air or water pollution significantly. The most important impacts are the small reduction of waste sent to the landfill and increased production rates at glass plants.

Gaines, L.L.; Mintz, M.M. [Argonne National Lab., IL (United States)] [Argonne National Lab., IL (United States)

1994-03-01T23:59:59.000Z

409

On the structure and properties of a material deposited from arc discharge plasma near the cathode and onto vacuum-chamber walls  

Science Journals Connector (OSTI)

The structure and composition of a material (composite) deposited onto vacuum-chamber walls from arc discharge plasma during the crystallization of cathode spot products in electric and magnetic fields is studied...

N. A. Smolanov; N. A. Pankin

2014-09-01T23:59:59.000Z

410

PERFORMANCE CHARACTERISTICS OF THE FERMILAB 15-FOOT BUBBLE CHAMBER WITH A 1/3-SCALE INTERNAL PICKET FENCE (IPF) AND A TWO-PLANE EXTERNAL MUON IDENTIFIER (EMI)  

E-Print Network (OSTI)

L. Stevenson, G. P. Yost; Fermilab: B. Chrisman, D. Gee, A.of Hawaii; and M. Atac, Fermilab; "Status of the InternalPicket Fence for the Fermilab 15-Foot Bubble Chamber", U. H.

Stevenson, M.L.

2011-01-01T23:59:59.000Z

411

SU?C?105?05: Reference Dosimetry of High?Energy Electron Beams with a Farmer?Type Ionization Chamber  

SciTech Connect

Purpose: To investigate gradient effects and provide Monte Carlo calculated beam quality conversion factors to characterize the Farmer?type NE2571 ion chamber for high?energy reference dosimetry of clinical electron beams. Methods: The EGSnrc code system is used to calculate the absorbed dose to water and to the gas in a fully modeled NE2571 chamber as a function of depth in a water phantom. Electron beams incident on the surface of the phantom are modeled using realistic BEAMnrc accelerator simulations and electron beam spectra. Beam quality conversion factors are determined using calculated doses to water and to air in the chamber in high?energy electron beams and in a cobalt?60 reference field. Calculated water?to?air stopping power ratios are employed for investigation of the overall ion chamber perturbation factor. Results: An upstream shift of 0.30.4 multiplied by the chamber radius, r-cav, both minimizes the variation of the overall ion chamber perturbation factor with depth and reduces the difference between the beam quality specifier (R{sub 5} {sub 0}) calculated using ion chamber simulations and that obtained with simulations of dose?to?water in the phantom. Beam quality conversion factors are obtained at the reference depth and gradient effects are optimized using a shift of 0.2r-cav. The photon?electron conversion factor, k-ecal, amounts to 0.906 when gradient effects are minimized using the shift established here and 0.903 if no shift of the data is used. Systematic uncertainties in beam quality conversion factors are investigated and amount to between 0.4 to 1.1% depending on assumptions used. Conclusion: The calculations obtained in this work characterize the use of an NE2571 ion chamber for reference dosimetry of high?energy electron beams. These results will be useful as the AAPM continues to review their reference dosimetry protocols.

Muir, B; Rogers, D [Carleton University, Ottawa, ON (Canada)] [Carleton University, Ottawa, ON (Canada)

2013-06-15T23:59:59.000Z

412

The probability of containment failure by direct containment heating in Zion  

SciTech Connect

This report is the first step in the resolution of the Direct Containment Heating (DCH) issue for the Zion Nuclear Power Plant using the Risk Oriented Accident Analysis Methodology (ROAAM). This report includes the definition of a probabilistic framework that decomposes the DCH problem into three probability density functions that reflect the most uncertain initial conditions (UO{sub 2} mass, zirconium oxidation fraction, and steel mass). Uncertainties in the initial conditions are significant, but our quantification approach is based on establishing reasonable bounds that are not unnecessarily conservative. To this end, we also make use of the ROAAM ideas of enveloping scenarios and ``splintering.`` Two causal relations (CRs) are used in this framework: CR1 is a model that calculates the peak pressure in the containment as a function of the initial conditions, and CR2 is a model that returns the frequency of containment failure as a function of pressure within the containment. Uncertainty in CR1 is accounted for by the use of two independently developed phenomenological models, the Convection Limited Containment Heating (CLCH) model and the Two-Cell Equilibrium (TCE) model, and by probabilistically distributing the key parameter in both, which is the ratio of the melt entrainment time to the system blowdown time constant. The two phenomenological models have been compared with an extensive database including recent integral simulations at two different physical scales. The containment load distributions do not intersect the containment strength (fragility) curve in any significant way, resulting in containment failure probabilities less than 10{sup {minus}3} for all scenarios considered. Sensitivity analyses did not show any areas of large sensitivity.

Pilch, M.M. [Sandia National Labs., Albuquerque, NM (United States); Yan, H.; Theofanous, T.G. [California Univ., Santa Barbara, CA (United States)

1994-12-01T23:59:59.000Z

413

Recovering hydrocarbons from hydrocarbon-containing vapors  

DOE Patents (OSTI)

Values are recovered from a hydrocarbon-containing vapor by contacting the vapor with quench liquid consisting essentially of hydrocarbons to form a condensate and a vapor residue, the condensate and quench fluid forming a combined liquid stream. The combined liquid stream is mixed with a viscosity-lowering liquid to form a mixed liquid having a viscosity lower than the viscosity of the combined liquid stream to permit easy handling of the combined liquid stream. The quench liquid is a cooled portion of the mixed liquid. Viscosity-lowering liquid is separated from a portion of the mixed liquid and cycled to form additional mixed liquid.

Mirza, Zia I. (La Verne, CA); Knell, Everett W. (Los Alamitos, CA); Winter, Bruce L. (Danville, CA)

1980-09-30T23:59:59.000Z

414

Lid design for low level waste container  

DOE Patents (OSTI)

A container for low level waste includes a shell and a lid. The lid has a frame to which a planar member is welded. The lid frame includes a rectangular outer portion made of square metal tubing, a longitudinal beam extending between axial ends of the rectangular outer portion, and a transverse beam extending between opposite lateral sides of the rectangular outer portion. Two pairs of diagonal braces extend between the longitudinal beam and the four corners of the rectangular outer portion of the frame.

Holbrook, Richard H. (Clinton, TN); Keener, Wendell E. (Lenior City, TN)

1995-01-01T23:59:59.000Z

415

Evaporation of Enriched Uranium Solutions Containing Organophosphates  

SciTech Connect

The Savannah River Site has enriched uranium (EU) solution which has been stored for almost 10 years since being purified in the second uranium cycle of the H area solvent extraction process. The preliminary SRTC data, in conjunction with information in the literature, is promising. However, very few experiments have been run, and none of the results have been confirmed with repeat tests. As a result, it is believed that insufficient data exists at this time to warrant Separations making any process or program changes based on the information contained in this report. When this data is confirmed in future testing, recommendations will be presented.

Pierce, R.A.

1999-03-18T23:59:59.000Z

416

Reusable crucible for containing corrosive liquids  

DOE Patents (OSTI)

A reusable, non-wetting, corrosion-resistant material suitable for containment of corrosive liquids is formed of a tantalum or tantalum alloy substrate that is permeated with carbon atoms. The substrate is carburized to form surface layers of TaC and Ta[sub 2]C, and then is heated at high temperature under vacuum until the carbon atoms in the carbide layers diffuse throughout the substrate to form a solid solution of carbon atoms randomly interspersed in the tantalum or tantalum alloy lattice. 10 figures.

Pruneda, J.A.H. de.

1995-01-24T23:59:59.000Z

417

Lid design for low level waste container  

DOE Patents (OSTI)

A container for low level waste includes a shell and a lid. The lid has a frame to which a planar member is welded. The lid frame includes a rectangular outer portion made of square metal tubing, a longitudinal beam extending between axial ends of the rectangular outer portion, and a transverse beam extending between opposite lateral sides of the rectangular outer portion. Two pairs of diagonal braces extend between the longitudinal beam and the four corners of the rectangular outer portion of the frame. 6 figs.

Holbrook, R.H.; Keener, W.E.

1995-02-28T23:59:59.000Z

418

The edited version has been published in 2004 in N. Hopkins & R. Saad (eds), Upper Egypt, Identity and Change, Cairo,  

E-Print Network (OSTI)

The edited version has been published in 2004 in N. Hopkins & R. Saad (eds), Upper Egypt, Identity tendency, at least since the early 20th c., to describe Upper Egypt (hereafter as-Sa'îd) as a specific these questions and were always stressing "How unknown and unfamiliar and neglected Upper Egypt was for the State

Paris-Sud XI, Université de

419

Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F. Raymond  

E-Print Network (OSTI)

Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F, Second Fig ABSTRACT. Upper-air conditions archived in the NCEP-NCAR Reanalysis have been used cannot be determined, so the investigation is limited to examining relative changes in those upper air

Rasmussen, L.A.

420

Upper mantle structure of South America from joint inversion of waveforms and fundamental mode group velocities of Rayleigh waves  

E-Print Network (OSTI)

Upper mantle structure of South America from joint inversion of waveforms and fundamental mode tomographic S wave velocity model for the upper mantle beneath South America is presented. We developed three-dimensional (3-D) upper mantle S velocity model and a Moho depth model for South America, which

van der Lee, Suzan

Note: This page contains sample records for the topic "upper containment chamber" 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

Exploration Of The Upper Hot Creek Ranch Geothermal Resource, Nye County,  

Open Energy Info (EERE)

Of The Upper Hot Creek Ranch Geothermal Resource, Nye County, Of The Upper Hot Creek Ranch Geothermal Resource, Nye County, Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Exploration Of The Upper Hot Creek Ranch Geothermal Resource, Nye County, Nevada Details Activities (2) Areas (1) Regions (0) Abstract: The Upper Hot Creek Ranch (UHCR) geothermal system had seen no significant exploration activity prior to initiation of this GRED III project. Geochemical geothermometers calculated from previously available but questionable quality analyses of the UHCR hot spring waters indicated possible subsurface temperatures of +320 oF. A complex Quaternary and Holocene faulting pattern associated with a six mile step over of the Hot Creek Range near the UHCR also indicated that this area was worthy of some

422

Microsoft Word - Upper Jocko River Final Draft CX 7-15-2013.docx  

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

Upper Jocko River Property funding Upper Jocko River Property funding Fish and Wildlife Project No. and Contract No.: 2002-003-00, BPA-007168 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.25 Real property transfers for cultural resources protection, habitat preservation, and wildlife management Location: Township 16 North, Range 19 West, Section 10, Lake County, MT Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to fund the Salish and Kootenai Tribes for the purchase of 5 acres of property, referred to as the Upper Jocko River Land Acqusition in Lake County, MT. The Salish and Kootenai Tribes will own and manage the Upper Jocko River property for fish and wildlife conservation purposes and BPA will receive a conservation

423

Schlumberger soundings in the Upper Raft River and Raft River Valleys,  

Open Energy Info (EERE)

soundings in the Upper Raft River and Raft River Valleys, soundings in the Upper Raft River and Raft River Valleys, Idaho and Utah Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Schlumberger soundings in the Upper Raft River and Raft River Valleys, Idaho and Utah Details Activities (1) Areas (1) Regions (0) Abstract: In 1975, the U.S. Geological Survey made seventy Schlumberger resistivity soundings in the Upper Raft River Valley and in parts of the Raft River Valley. These soundings complement the seventy-nine soundings made previously in the Raft River Valley (Zohdy and others, 1975) and bring the total number of soundings to 149. This work was done as part of a hydrogeologic study of the area. The location, number, and azimuth of all 149 Schlumberger sounding stations are presented. The location of the new

424

E-Print Network 3.0 - ares-i upper stage Sample Search Results  

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

2008 Summary: stage engine would be added to Ares I-Y. For the Upper Stage (US), the production line at MSFC would... engines), eliminating Ares I-Y flight test, accelerating...

425

Upper Missouri G&T El Coop Inc | Open Energy Information  

Open Energy Info (EERE)

El Coop Inc Jump to: navigation, search Name: Upper Missouri G&T El Coop Inc Place: Montana References: EIA Form EIA-861 Final Data File for 2010 - File1a1 EIA Form 861 Data...

426

A palaeomagnetic study of the Upper Mesozoic succession in Northern Tunisia  

Science Journals Connector (OSTI)

......Carolina 29208, USA Geologisches Institut, Karlsruhe, FRG Marathon Oil Company, Casper, Wyoming, USA The Upper Mesozoic section...GeologischesInstitut, Karlsruhe, FRG M. E. Smithwick Marathon ail Conzpany, Casper, Wyoming, USA Received 1980April......

A. E. M. Nairn; T. J. Schmitt; M. E. Smithwick

1981-04-01T23:59:59.000Z

427

Upper bounds of the rates of decay for solutions of the Boussinesq equations  

Science Journals Connector (OSTI)

In this paper, upper bounds of the L 2-decay rate for the Boussinesq equations are considered. Using the L 2...decay rate of solutions for the heat equation, and assuming that the ...

Ying Liu

2011-01-01T23:59:59.000Z

428

Sedimentology of Upper Cretaceous Cody-Parkman Delta, Southwestern Powder River Basin, Wyoming  

Science Journals Connector (OSTI)

...1959). Some pillows moved downslope to pile up like box cars behind a stalled locomotive so that an occasional pillow slid...south-central New York (Sorauf, 1965), Upper Cretaceous Panther Sandstone of central Utah (Howard and Lohrengel, 1969...

429

Geochemical and rheological constraints on the dynamics of the oceanic upper mantle  

E-Print Network (OSTI)

I provide constraints on mantle convection through observations of the rheology and composition of the oceanic upper mantle. Convection cannot be directly observed, yet is a fundamental part of the plate tectonic cycle. ...

Warren, Jessica Mendelsohn

2007-01-01T23:59:59.000Z

430

Attribution and Characteristics of Wet and Dry Seasons in the Upper Colorado River Basin  

Science Journals Connector (OSTI)

Previous research has shown that the temperature and precipitation variability in the Upper Colorado River Basin (UCRB) is correlated with large-scale climate variability (i.e., El Nio - Southern Oscillation [ENSO] and Pacific Decadal Oscillation ...

Rebecca A. Bolinger; Christian D. Kummerow; Nolan J. Doesken

431

Pressure solution and microfracturing in primary oil migration, upper cretaceous Austin Chalk, Texas Gulf Coast  

E-Print Network (OSTI)

The Upper Cretaceous Austin Chalk is a well known source rock and fractured reservoir. Production is mainly from fractures, and the mechanism by which oil migrates from the matrix into the fractures is not well understood. Microfracturing due...

Chanchani, Jitesh

2012-06-07T23:59:59.000Z

432

Origin of gaseous hydrocarbons from Upper Cretaceous and Tertiary strata in the Piceance basin, western Colorado  

E-Print Network (OSTI)

Natural gas samples were collected for geochemical analyses from Upper Cretaceous and Tertiary strata of the Piceance basin in western Colorado to: 1) determine the origin of gases (i.e., microbial versus thermogenic), 2) determine the thermogenic...

Katz, David Jonathan

2012-06-07T23:59:59.000Z

433

Development of North Atlantic Tropical Disturbances Near Upper-Level Potential Vorticity Streamers  

Science Journals Connector (OSTI)

Tropical cyclone (TC) development near upper-level potential vorticity (PV) streamers in the North Atlantic is studied from synoptic climatology, composite, and case study perspectives. Midlatitude anticyclonic wave breaking is instrumental in ...

Thomas J. Galarneau; Jr.; Ron McTaggart-Cowan; Lance F. Bosart; Christopher A. Davis

434

Sr isotope chemostratigraphy of Upper Jurassic carbonate rocks in the Demerdzhi Plateau (Crimean Mountains)  

Science Journals Connector (OSTI)

The first Sr chemostratigraphic data are obtained for the Upper Jurassic carbonate sections in the Demerdzhi Plateau of the Crimean Mountains. The oncoid, microbial, and organogenic-detrital limestone varietie...

S. V. Rudko; A. B. Kuznetsov; V. K. Piskunov

2014-09-01T23:59:59.000Z

435

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts  

E-Print Network (OSTI)

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts Graduate-pronged approach has required a combination of expertise from R. Watts, G. Sutyrin, and I. Ginis (who have

Rhode Island, University of

436

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts  

E-Print Network (OSTI)

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts Graduate of expertise from R. Watts, G. Sutyrin, and I. Ginis (who have a coordinated ONR-supported study at URI

Rhode Island, University of

437

The skull of Postosuchus kirkpatricki (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States  

E-Print Network (OSTI)

9000) were obscured by plaster, wire mesh, and paint duringskull were covered by the plaster and paint used in theHoltz 1994). When plaster was removed from the upper

Weinbaum, Jonathan C.

2011-01-01T23:59:59.000Z

438

An early history of pure shear in the upper plate of the raft...  

Open Energy Info (EERE)

early history of pure shear in the upper plate of the raft river metamorphic core complex- black pine mountains, southern Idaho Jump to: navigation, search OpenEI Reference...

439

Surface currents and equatorial thermocline in a coupled upper ocean-atmosphere GCM  

Science Journals Connector (OSTI)

The Oregon State University coupled upper ocean-atmosphere GCM is evaluated in terms of the simulated winds, ocean currents and thermocline depth variations. Although the zonal ... a factor of about three and the...

Kenneth R Sperber; Sultan Hameed; W Gates Lawrence

1992-04-01T23:59:59.000Z

440

Tree Species Composition and Beta Diversity in the Upper Ro Chagres Basin, Panama  

Science Journals Connector (OSTI)

Tree species composition at two sites in the upper Ro Chagres basin of central Panama was evaluated using rapid inventory methods. At ... inventories were compared to 81 others within the Panama Canal Watershed,...

Rolando Prez; Salomn Aguilar; Agustn Somoza; Richard Condit

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "upper containment chamber" 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

Development of an upper extremity motor function rehabilitation system and an assessment system  

Science Journals Connector (OSTI)

This paper presents a novel upper extremity motor function rehabilitation system and an assessment system. The rehabilitation system is an active rehabilitation that can be manipulated by patients through a haptic device and an inertia sensor to perform a tracking task in virtual environment with coordination training of bilateral upper extremity. The design of system aims to augment patients' force exerted by their upper extremity and the ability of force control, namely, dexterity. The structure of rehabilitation system is compact and the inertia of the haptic device's stylus is very small (only 45 g), which makes the system suitable for home-rehabilitation. Simultaneously, in order to assess the effect of rehabilitation, an assessment system has been developed using a 6-axis force sensor. The proposed rehabilitation system is testified experimentally for the upper limbs' rehabilitation training.

Zhibin Song; Shuxiang Guo; Yili Fu

2011-01-01T23:59:59.000Z

442

An Approach to the Detection of Long-Term Trends in Upper Stratospheric Ozone from Space  

Science Journals Connector (OSTI)

A central problem in the detection of long-term trends in upper stratospheric ozone from orbiting remote sensors involves the separation of instrument drifts from true geophysical changes. Periodic flights of a Solar Backscatter Ultraviolet ...

John E. Frederick; Xufeng Niu; Ernest Hilsenrath

1990-10-01T23:59:59.000Z

443

Upper-Ocean Processes under the Stratus Cloud Deck in the Southeast Pacific Ocean  

Science Journals Connector (OSTI)

The annual mean heat budget of the upper ocean beneath the stratocumulus/stratus cloud deck in the southeast Pacific is estimated using Simple Ocean Data Assimilation (SODA) and an eddy-resolving Hybrid Coordinate Ocean Model (HYCOM). Both are ...

Yangxing Zheng; George N. Kiladis; Toshiaki Shinoda; E. Joseph Metzger; Harley E. Hurlburt; Jialin Lin; Benjamin S. Giese

2010-01-01T23:59:59.000Z

444

Effects of horizontal mixing on the upper ocean temperature in the equatorial Pacific Ocean  

Science Journals Connector (OSTI)

The influence of horizontal mixing on the thermal structure of the equatorial Pacific Ocean is examined based on a sigma coordinate ... on the upper thermal structure in the equatorial Pacific Ocean, while their ...

Chuanjiang Huang; Fangli Qiao

2012-01-01T23:59:59.000Z

445

Evolution of upper mantle beneath East Asia and the Tibetan Plateau from P-wave tomography  

E-Print Network (OSTI)

The main objective of the research presented in this thesis is to improve our understanding for the evolution of the upper mantle beneath East Asia and the Tibetan Plateau through high resolution P-wave tomography. The ...

Li, Chang, Ph.D.

2007-01-01T23:59:59.000Z

446

Local foehn effects in the upper Isar Valley, part 1: Observations  

Science Journals Connector (OSTI)

An unusually strong nocturnal downvalley wind can be regularly observed in the upper ... located over Central Europe or when ambient southerly winds are present. Due to the structure of the local topography, this...

Matthias Hornsteiner

2005-04-01T23:59:59.000Z

447

Local foehn effects in the upper Isar Valley, Part 2: numerical simulations  

Science Journals Connector (OSTI)

The local wind system in the upper Isar Valley (Bavarian ... near Mittenwald has the peculiarity that regularly strong foehn-like nocturnal flows occur, mainly during clear ... its properties are similar to the c...

M. Hornsteiner; G. Zngl

2006-01-01T23:59:59.000Z

448

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin  

E-Print Network (OSTI)

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin Report Prepared by using tools such as tracers to determine groundwater travel times and this dynamic simulation modeling

Fay, Noah

449

Density Perturbations in the Upper Atmosphere Caused by the Dissipation of Solar Wind Energy  

Science Journals Connector (OSTI)

The upper atmosphere constitutes the outer region of the terrestrial gas envelope above about 100km altitude. The energy budget of this outer gas layer is partly controlled by the dissipation of solar wind energy

Gerd W. Prlss

2011-03-01T23:59:59.000Z

450

Improved Upper Limits on the Stochastic Gravitational-Wave Background from 2009-2010 LIGO and Virgo Data  

E-Print Network (OSTI)

Gravitational waves from a variety of sources are predicted to superpose to create a stochastic background. This background is expected to contain unique information from throughout the history of the universe that is unavailable through standard electromagnetic observations, making its study of fundamental importance to understanding the evolution of the universe. We carry out a search for the stochastic background with the latest data from LIGO and Virgo. Consistent with predictions from most stochastic gravitational-wave background models, the data display no evidence of a stochastic gravitational-wave signal. Assuming a gravitational-wave spectrum of Omega_GW(f)=Omega_alpha*(f/f_ref)^alpha, we place 95% confidence level upper limits on the energy density of the background in each of four frequency bands spanning 41.5-1726 Hz. In the frequency band of 41.5-169.25 Hz for a spectral index of alpha=0, we constrain the energy density of the stochastic background to be Omega_GW(f)<5.6x10^-6. For the 600-1000 Hz band, Omega_GW(f)<0.14*(f/900 Hz)^3, a factor of 2.5 lower than the best previously reported upper limits. We find Omega_GW(f)<1.8x10^-4 using a spectral index of zero for 170-600 Hz and Omega_GW(f)<1.0*(f/1300 Hz)^3 for 1000-1726 Hz, bands in which no previous direct limits have been placed. The limits in these four bands are the lowest direct measurements to date on the stochastic background. We discuss the implications of these results in light of the recent claim by the BICEP2 experiment of the possible evidence for inflationary gravitational waves.

The LIGO Scientific Collaboration; the Virgo Collaboration; J. Aasi; B. P. Abbott; R. Abbott; T. Abbott; M. R. Abernathy; T. Accadia; F. Acernese; K. Ackley; C. Adams; T. Adams; P. Addesso; R. X. Adhikari; C. Affeldt; M. Agathos; N. Aggarwal; O. D. Aguiar; A. Ain; P. Ajith; A. Alemic; B. Allen; A. Allocca; D. Amariutei; M. Andersen; R. Anderson; S. B. Anderson; W. G. Anderson; K. Arai; M. C. Araya; C. Arceneaux; J. Areeda; S. M. Aston; P. Astone; P. Aufmuth; C. Aulbert; L. Austin; B. E. Aylott; S. Babak; P. T. Baker; G. Ballardin; S. W. Ballmer; J. C. Barayoga; M. Barbet; B. C. Barish; D. Barker; F. Barone; B. Barr; L. Barsotti; M. Barsuglia; M. A. Barton; I. Bartos; R. Bassiri; A. Basti; J. C. Batch; J. Bauchrowitz; Th. S. Bauer; B. Behnke; M. Bejger; M. G. Beker; C. Belczynski; A. S. Bell; C. Bell; G. Bergmann; D. Bersanetti; A. Bertolini; J. Betzwieser; P. T. Beyersdorf; I. A. Bilenko; G. Billingsley; J. Birch; S. Biscans; M. Bitossi; M. A. Bizouard; E. Black; J. K. Blackburn; L. Blackburn; D. Blair; S. Bloemen; M. Blom; O. Bock; T. P. Bodiya; M. Boer; G. Bogaert; C. Bogan; C. Bond; F. Bondu; L. Bonelli; R. Bonnand; R. Bork; M. Born; V. Boschi; Sukanta Bose; L. Bosi; C. Bradaschia; P. R. Brady; V. B. Braginsky; M. Branchesi; J. E. Brau; T. Briant; D. O. Bridges; A. Brillet; M. Brinkmann; V. Brisson; A. F. Brooks; D. A. Brown; D. D. Brown; F. Brckner; S. Buchman; T. Bulik; H. J. Bulten; A. Buonanno; R. Burman; D. Buskulic; C. Buy; L. Cadonati; G. Cagnoli; J. Caldern Bustillo; E. Calloni; J. B. Camp; P. Campsie; K. C. Cannon; B. Canuel; J. Cao; C. D. Capano; F. Carbognani; L. Carbone; S. Caride; A. Castiglia; S. Caudill; M. Cavagli; F. Cavalier; R. Cavalieri; C. Celerier; G. Cella; C. Cepeda; E. Cesarini; R. Chakraborty; T. Chalermsongsak; S. J. Chamberlin; S. Chao; P. Charlton; E. Chassande-Mottin; X. Chen; Y. Chen; A. Chincarini; A. Chiummo; H. S. Cho; J. Chow; N. Christensen; Q. Chu; S. S. Y. Chua; S. Chung; G. Ciani; F. Clara; J. A. Clark; F. Cleva; E. Coccia; P. -F. Cohadon; A. Colla; C. Collette; M. Colombini; L. Cominsky; M. Constancio Jr.; A. Conte; D. Cook; T. R. Corbitt; M. Cordier; N. Cornish; A. Corpuz; A. Corsi; C. A. Costa; M. W. Coughlin; S. Coughlin; J. -P. Coulon; S. Countryman; P. Couvares; D. M. Coward; M. Cowart; D. C. Coyne; R. Coyne; K. Craig; J. D. E. Creighton; S. G. Crowder; A. Cumming; L. Cunningham; E. Cuoco; K. Dahl; T. Dal Canton; M. Damjanic; S. L. Danilishin; S. D'Antonio; K. Danzmann; V. Dattilo; H. Daveloza; M. Davier; G. S. Davies; E. J. Daw; R. Day; T. Dayanga; G. Debreczeni; J. Degallaix; S. Delglise; W. Del Pozzo; T. Denker; T. Dent; H. Dereli; V. Dergachev; R. De Rosa; R. T. DeRosa; R. DeSalvo; S. Dhurandhar; M. Daz; L. Di Fiore; A. Di Lieto; I. Di Palma; A. Di Virgilio; A. Donath; F. Donovan; K. L. Dooley; S. Doravari; S. Dossa; R. Douglas; T. P. Downes; M. Drago; R. W. P. Drever; J. C. Driggers; Z. Du; S. Dwyer; T. Eberle; T. Edo; M. Edwards; A. Effler; H. Eggenstein; P. Ehrens; J. Eichholz; S. S. Eikenberry; G. Endr?czi; R. Essick; T. Etzel; M. Evans; T. Evans; M. Factourovich; V. Fafone; S. Fairhurst; Q. Fang; S. Farinon; B. Farr; W. M. Farr; M. Favata; H. Fehrmann; M. M. Fejer; D. Feldbaum; F. Feroz; I. Ferrante; F. Ferrini; F. Fidecaro; L. S. Finn; I. Fiori; R. P. Fisher; R. Flaminio; J. -D. Fournier; S. Franco; S. Frasca; F. Frasconi; M. Frede; Z. Frei; A. Freise; R. Frey; T. T. Fricke; P. Fritschel; V. V. Frolov; P. Fulda; M. Fyffe; J. Gair; L. Gammaitoni; S. Gaonkar; F. Garufi; N. Gehrels; G. Gemme; E. Genin; A. Gennai; S. Ghosh; J. A. Giaime; K. D. Giardina; A. Giazotto; C. Gill; J. Gleason; E. Goetz; R. Goetz; L. Gondan; G. Gonzlez; N. Gordon; M. L. Gorodetsky; S. Gossan; S. Goler; R. Gouaty; C. Grf; P. B. Graff; M. Granata; A. Grant; S. Gras; C. Gray; R. J. S. Greenhalgh; A. M. Gretarsson; P. Groot; H. Grote; K. Grover; S. Grunewald; G. M. Guidi; C. Guido; K. Gushwa; E. K. Gustafson; R. Gustafson; D. Hammer; G. Hammond; M. Hanke; J. Hanks; C. Hanna; J. Hanson; J. Harms; G. M. Harry; I. W. Harry; E. D. Harstad; M. Hart; M. T. Hartman; C. -J. Haster; K. Haughian; A. Heidmann; M. Heintze; H. Heitmann; P. Hello; G. Hemming; M. Hendry; I. S. Heng; A. W. Heptonstall; M. Heurs; M. Hewitson; S. Hild; D. Hoak; K. A. Hodge; K. Holt; S. Hooper; P. Hopkins; D. J. Hosken; J. Hough; E. J. Howell; Y. Hu; E. Huerta; B. Hughey; S. Husa; S. H. Huttner; M. Huynh; T. Huynh-Dinh; D. R. Ingram; R. Inta; T. Isogai; A. Ivanov; B. R. Iyer; K. Izumi; M. Jacobson; E. James; H. Jang; P. Jaranowski; Y. Ji; F. Jimnez-Forteza; W. W. Johnson; D. I. Jones; R. Jones; R. J. G. Jonker; L. Ju; Haris K; P. Kalmus; V. Kalogera; S. Kandhasamy; G. Kang; J. B. Kanner; J. Karlen; M. Kasprzack; E. Katsavounidis; W. Katzman; H. Kaufer; K. Kawabe; F. Kawazoe; F. Kflian; G. M. Keiser; D. Keitel; D. B. Kelley; W. Kells; A. Khalaidovski; F. Y. Khalili

2014-06-17T23:59:59.000Z

451

Phosphate-Containing Polyethylene Glycol Polymers Prevent Lethal...  

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

Phosphate-Containing Polyethylene Glycol Polymers Prevent Lethal Sepsis by Multidrug-Resistant Pathogens. Phosphate-Containing Polyethylene Glycol Polymers Prevent Lethal Sepsis by...

452

Arginine-Containing Ligands Enhance H-2 Oxidation Catalyst Performance...  

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

Arginine-Containing Ligands Enhance H-2 Oxidation Catalyst Performance. Arginine-Containing Ligands Enhance H-2 Oxidation Catalyst Performance. Abstract: In H2 fuel cells,...

453

Accelerated Testing of HT-9 with Zirconia Coatings Containing...  

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

Testing of HT-9 with Zirconia Coatings Containing Gallium using Raman Spectroscopy and XPS. Accelerated Testing of HT-9 with Zirconia Coatings Containing Gallium using Raman...

454

Effects of Oxygen-Containing Functional Groups on Supercapacitor...  

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

Oxygen-Containing Functional Groups on Supercapacitor Performance. Effects of Oxygen-Containing Functional Groups on Supercapacitor Performance. Abstract: Molecular dynamics (MD)...

455

Depositional environment and reservoir morphology of the Upper Wilcox sandstones, Katy gas field, Waller County, Texas  

E-Print Network (OSTI)

" Wilcox oil and gas fields Page Structure map on the top of the Wilcox Group, Katy gas field, Wailer County, Texas. Contour interval is 100 feet. Nap shows location of wells in the field which penetrate the'IJpper Wilcox" section. Cores are from... Sedimentary structures of the Upper Wilcox sandstones in Humble W-35, Katy gas field, Mailer County, Texas 18 Shale character, deformational features, and sedimentary structures of the Upper Wilcox sand- stones in Humble W-35, Katy gas field, Mailer...

DePaul, Gilbert John

2012-06-07T23:59:59.000Z

456

Constraints on target chamber first wall and target designs that will enable NIF debris shields to survive  

SciTech Connect

The National Ignition Facility target chamber interior materials and target designs themselves have to be compatible with survival of the final-optics debris shields. To meet the planned maintenance and refinishing rate, the contamination of the debris shields cannot exceed about 1 nm equivalent thickness per shot of total material. This implies that the target mass must be limited to no more than 1 gram and the ablated mass released to the chamber from all other components must not exceed 3 grams. In addition, the targets themselves must either completely vaporize or send any minor amounts of shrapnel towards the chamber waist to prevent excessive cratering of the debris shields. The constraints on the first-wall ablation require that it be louvered to provide passive collection of remobilized contamination, because the expected target debris will remobilize at a rate fast enough to require cleaning every 3 weeks, about three times more frequent than possible with planned robotics. Furthermore, a comparison of ablatants from B{sub 4}C and stainless-steel louvers suggests that remobilization of target debris by x rays will be greater than of the base material in both cases, thereby reducing the performance advantage of clean B{sub 4}C over much-cheaper stainless steel. Neutronics calculations indicate that activation of thin Ni-free stainless steel is not a significant source of maintenance personnel radiation dose. Consequently, the most attractive first wall design consists of stainless-steel louvers. Evaluation of various unconverted-light beam dump designs indicates that stainless steel louvers generate no more debris than other materials, so one single design can serve as both first wall and beam dumps, eliminating beam steering restrictions caused by size and location of the beam dumps. One reservation is that the allowable contamination rate of the debris shield is not yet completely understood.

Hibbard,W.; Burnham, A. K.; Curran, D. R; Genin, F. Y.; Gerassimenko, M.; Latkowski, J. F.; Peterson, P. F.; Scott, J. M.; Tokheim, R. E.; Whitman, P. K.

1998-07-09T23:59:59.000Z

457

Spontaneous Flows and Accumulation of Active Particles in Connected Micro-Chambers  

E-Print Network (OSTI)

We numerically study the dynamics of run-and-tumble particles in two confining vessels connected by thin channels. Two dominant dynamical behaviors emerge: (i) an oscillatory pumping state, in which particles alternatively fill the two vessels and (ii) a circulating flow state, dynamically maintaining a near constant population level in the containers when connected by two channels. The narrowness of channels and the out-of-equilibrium nature of the system give rise to accumulation phenomena and long-lived spontaneous flows of active particles.

M. Paoluzzi; R. Di Leonardo; L. Angelani

2014-12-02T23:59:59.000Z

458

Determination of astrophysical thermonuclear rates with a bubble chamber: The {sup 12}C(??){sup 16}O reaction case  

SciTech Connect

The {sup 12}C(??){sup 16}O reaction rate is considered one of the most important unknown parameters in the physics of structure and evolution of massive stars. While extensive experimental campaigns have been performed trying to improve the quality of the measurements, the rate still holds very large uncertainties. Here we discuss a new experimantal scheme to measure the cross section of this reaction with a bubble chamber and a bremsstrahlung beam. The main advantage of the technique is a gain in the luminosity of several orders of magnitude when compared to other ongoing experiments.

DiGiovine, B.; Henderson, D.; Holt, R. J.; Rehm, K. E. [Argonne National Laboratory, Argonne IL 60439 (United States); Grames, J.; Meekins, D.; Poelker, M.; Suleiman, R. [Jefferson Lab, Newport News, VA 23606 (United States); Robinson, A.; Ugalde, C., E-mail: cugalde@uchicago.edu [University of Chicago, Chicago, IL 60637 (United States); Sonnenschein, A. [Fermilab, Batavia, IL 60510 (United States)

2013-11-07T23:59:59.000Z

459

Effects of eddy currents due to a vacuum chamber wall in the airgap of a moving-magnet linear actuator  

SciTech Connect

This paper discusses the effects of eddy currents induced in an electrically conducting plate which is placed in the airgap of a linear synchronous actuator with moving permanent magnets. The eddy currents induced in this plate, which is part of a controlled atmosphere chamber, cause not only damping but also deteriorate the actuator performance by disturbing the position measurement with Hall sensors. Furthermore, feed-forward controllers are less effective due to the suppression of high frequent armature fields. These effects are analyzed with an analytical model and verified with finite element simulations and measurements.

Jansen, J. W.; Lomonova, E. A.; Rovers, J. M. M. [Department of Electrical Engineering, Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven (Netherlands)

2009-04-01T23:59:59.000Z

460

Precise 3D track reconstruction algorithm for the ICARUS T600 liquid argon time projection chamber detector  

E-Print Network (OSTI)

Liquid Argon Time Projection Chamber (LAr TPC) detectors offer charged particle imaging capability with remarkable spatial resolution. Precise event reconstruction procedures are critical in order to fully exploit the potential of this technology. In this paper we present a new, general approach of three-dimensional reconstruction for the LAr TPC with a practical application to track reconstruction. The efficiency of the method is evaluated on a sample of simulated tracks. We present also the application of the method to the analysis of real data tracks collected during the ICARUS T600 detector operation with the CNGS neutrino beam.

M. Antonello; B. Baibussinov; P. Benetti; E. Calligarich; N. Canci; S. Centro; A. Cesana; K. Cieslik; D. B. Cline; A. G. Cocco; A. Dabrowska; D. Dequal; A. Dermenev; R. Dolfini; C. Farnese; A. Fava; A. Ferrari; G. Fiorillo; D. Gibin; S. Gninenko; A. Guglielmi; M. Haranczyk; J. Holeczek; A. Ivashkin; J. Kisiel; I. Kochanek; J. Lagoda; S. Mania; A. Menegolli; G. Meng; C. Montanari; S. Otwinowski; A. Piazzoli; P. Picchi; F. Pietropaolo; P. Plonski; A. Rappoldi; G. L. Raselli; M. Rossella; C. Rubbia; P. Sala; A. Scaramelli; E. Segreto; F. Sergiampietri; D. Stefan; J. Stepaniak; R. Sulej; M. Szarska; M. Terrani; F. Varanini; S. Ventura; C. Vignoli; H. Wang; X. Yang; A. Zalewska; K. Zaremba

2012-10-18T23:59:59.000Z

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461

Measurement of absorbed dose-to-water for an HDR {sup 192}Ir source with ionization chambers in a sandwich setup  

SciTech Connect

Purpose: In this study, a dedicated device for ion chamber measurements of absorbed dose-to-water for a Nucletron microSelectron-v2 HDR {sup 192}Ir brachytherapy source is presented. The device uses two ionization chambers in a so-called sandwich assembly. Using this setup and by taking the average reading of the two chambers, any dose error due to difficulties in absolute positioning (centering) of the source in between the chambers is cancelled to first order. The method's accuracy was examined by comparing measurements with absorbed dose-to-water determination based on the AAPM TG-43 protocol.Methods: The optimal source-to-chamber distance (SCD) for {sup 192}Ir dosimetry was determined from ion chamber measurements in a water phantom. The {sup 192}Ir source was sandwiched between two Exradin A1SL chambers (0.057 cm{sup 3}) at the optimal SCD separation. The measured ionization was converted to the absorbed dose-to-water using a {sup 60}Co calibration factor and a Monte Carlo-calculated beam quality conversion factor, k{sub Q}, for {sup 60}Co to {sup 192}Ir. An uncertainty estimate of the proposed method was determined based on reproducibility of measurements at different institutions for the same type of source.Results: The optimal distance for the A1SL chamber measurements was determined to be 5 cm from the {sup 192}Ir source center, considering the depth dependency of k{sub Q} for {sup 60}Co to {sup 192}Ir and the chamber positioning. The absorbed dose to water measured at (5 cm, 90) on the transverse axis was 1.3% lower than TG-43 values and its reproducibility and overall uncertainty were 0.8% and 1.7%, respectively. The measurement doses at anisotropic points agreed within 1.5% with TG-43 values.Conclusions: The ion chamber measurement of absorbed dose-to-water with a sandwich method for the {sup 192}Ir source provides a more accurate, direct, and reference dose compared to the dose-to-water determination based on air-kerma strength in the TG-43 protocol. Due to the simple but accurate assembly, the sandwich measurement method is useful for daily dose management of {sup 192}Ir sources.

Araki, Fujio; Kouno, Tomohiro; Ohno, Takeshi [Department of Health Sciences, Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji, Kumamoto 862-0976 (Japan)] [Department of Health Sciences, Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji, Kumamoto 862-0976 (Japan); Kakei, Kiyotaka; Yoshiyama, Fumiaki [Department of Radiotherapy, Kumamoto University Hospital, 1-1-1 Honjyo, Kumamoto 860-8556 (Japan)] [Department of Radiotherapy, Kumamoto University Hospital, 1-1-1 Honjyo, Kumamoto 860-8556 (Japan); Kawamura, Shinji [Department of Radiotherapy, Miyazaki University Hospital, 5200 Kihara Ohaza Kiyotake-Machi, Miyazaki 889-1692 (Japan)] [Department of Radiotherapy, Miyazaki University Hospital, 5200 Kihara Ohaza Kiyotake-Machi, Miyazaki 889-1692 (Japan)

2013-09-15T23:59:59.000Z

462

CERTAi N DATA CONTAINED IN THIS  

Office of Scientific and Technical Information (OSTI)

CERTAi CERTAi N DATA CONTAINED IN THIS i ] DOCUMENT MAYBE ! DIFFICULT TO READ ' IN MICROFICHE PRODUCTS" ! J ORNL/FTR-- 38 29 ,iv OAKRIDGENATIONALLABORATORY DE91 005973 * OPERATED BY MARTINMARIETTA ENERGY SYSTEMS, INC. PoSTOFFICE BOX2OO8, OAKRIDGE,TENNESSEE 37831.6285 JA, i olg91 ORNL , FOREIGN TRIPREPORT OPS'_JFTR-3829 DATE: December 21, 1990 SUBJECT: Report of Foreign Travel of C. R. Kennedy, Research Staff, Metals and Ceramics Division TO: Alvin W. Trivelpiece FROM: C.R. Kennedy PURPOSE: The main purpose of this trip was to present an invited paper, "Irradiation Creep of Graphite," at the International Symposium on Carbonheld at Tsukuba, Japan, November 4-8, 1990. SITES VISITED: 11/4-8/90 Conference Tsukuba, Japan 11/12-13/90 JAERI Tokai-mura, Japan ABSTRACT: The traveler attended the Conference, International Symposium on Carbon, to present an invited paper,

463

Compositions containing poly ([gamma]glutamylcysteinyl)glycines  

DOE Patents (OSTI)

A method of removing heavy metals from aqueous solution, a composition of matter used in effecting the removal, and the apparatus used in effecting the removal are described. One or more of the polypeptides, poly ([gamma]glutamylcysteinyl)glycines, is immobilized on an inert material in particulate form. Upon contact with an aqueous solution containing heavy metals, the polypeptides sequester the metals, removing them from the solution. There is selectivity of poly ([gamma]glutamylcysteinyl)glycines having a particular number of monomer repeat units for particular metals. The polypeptides are easily regenerated by contact with a small amount of an organic acid, so that they can be used again to remove heavy metals from solution. This also results in the removal of the metals from the column in a concentrated form. 1 figs.

Jackson, P.J.; Delhaize, E.; Robinson, N.J.; Unkefer, C.J.; Furlong, C.

1992-02-18T23:59:59.000Z

464

Ceramics containing dispersants for improved fracture toughness  

DOE Patents (OSTI)

The invention is a ceramic composition containing a new class of dispersant for hindering crack propagation by means of one or more energy-dissipative mechanisms. The composition is composed of a ceramic matrix with dispersed particles of a transformation-prone rare-earth niobate, tantalate or mixtures of these with each other and/or with a rare-earth vanadate. The dispersants, having a generic composition tRMO.sub.4, where R is a rare-earth element, B is Nb or Ta and O is oxygen, are mixed in powder form with a powder of the matrix ceramic and sintered to produce a ceramic form or body. The crack-hindering mechanisms operates to provide improved performance over a wide range of temperature and operating conditions.

Nevitt, Michael V. (Wheaton, IL); Aldred, Anthony T. (Wheaton, IL); Chan, Sai-Kit (Darien, IL)

1987-01-01T23:59:59.000Z

465

Efficiency of silicon solar cells containing chromium  

DOE Patents (OSTI)

Efficiency of silicon solar cells containing about 10.sup.15 atoms/cm.sup.3 of chromium is improved about 26% by thermal annealing of the silicon wafer at a temperature of 200.degree. C. to form chromium precipitates having a diameter of less than 1 Angstrom. Further improvement in efficiency is achieved by scribing laser lines onto the back surface of the wafer at a spacing of at least 0.5 mm and at a depth of less than 13 micrometers to preferentially precipitate chromium near the back surface and away from the junction region of the device. This provides an economical way to improve the deleterious effects of chromium, one of the impurities present in metallurgical grade silicon material.

Frosch, Robert A. Administrator of the National Aeronautics and Space (New Port Beach, CA); Salama, Amal M. (New Port Beach, CA)

1982-01-01T23:59:59.000Z

466

X-ray radiography for container inspection  

DOE Patents (OSTI)

Arrangements of X-ray inspection systems are described for inspecting high-z materials in voluminous objects such as containers. Inspection methods may involve generating a radiographic image based on detected attenuation corresponding to a pulsed beams of radiation transmitted through a voluminous object. The pulsed beams of radiation are generated by a high-energy source and transmitted substantially downward along an incident angle, of approximately 1.degree. to 30.degree., to a vertical axis extending through the voluminous object. The generated radiographic image may be analyzed to detect on localized high attenuation representative of high-z materials and to discriminate high-z materials from lower and intermediate-z materials on the basis of the high density and greater attenuation of high-z material for higher energy (3-10 MeV) X-rays, and the compact nature of threatening masses of fissionable materials.

Katz, Jonathan I. (Clayton, MO); Morris, Christopher L. (Los Alamos, NM)

2011-06-07T23:59:59.000Z

467

Contained Modes In Mirrors With Sheared Rotation  

SciTech Connect

In mirrors with E B rotation, a fixed azimuthal perturbation in the lab frame can appear as a wave in the rotating frame. If the rotation frequency varies with radius, the plasma-frame wave frequency will also vary radially due to the Doppler shift. A wave that propagates in the high rotation plasma region might therefore be evanescent at the plasma edge. This can lead to radially localized Alfven eigenmodes with high azimuthal mode numbers. Contained Alfven modes are found both for peaked and non-peaked rotation profiles. These modes might be useful for alpha channeling or ion heating, as the high azimuthal wave number allows the plasma wave frequency in the rotating frame to exceed the ion cyclotron frequency. __________________________________________________

Abraham J. Fetterman and Nathaniel J. Fisch

2010-10-08T23:59:59.000Z

468

Method of determining a content of a nuclear waste container  

DOE Patents (OSTI)

A method and apparatus are provided for identifying contents of a nuclear waste container. The method includes the steps of forming an image of the contents of the container using digital radiography, visually comparing contents of the image with expected contents of the container and performing computer tomography on the container when the visual inspection reveals an inconsistency between the contents of the image and the expected contents of the container.

Bernardi, Richard T. (Prospect Heights, IL); Entwistle, David (Buffalo Grove, IL)

2003-04-22T23:59:59.000Z

469

High intensity discharge device containing oxytrihalides  

DOE Patents (OSTI)

A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO[sub 2], with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube. 7 figs.

Lapatovich, W.P.; Keeffe, W.M.; Liebermann, R.W.; Maya, J.

1987-06-09T23:59:59.000Z

470

High intensity discharge device containing oxytrihalides  

DOE Patents (OSTI)

A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO.sub.2, with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube.

Lapatovich, Walter P. (Hudson, MA); Keeffe, William M. (Rockport, MA); Liebermann, Richard W. (Danvers, MA); Maya, Jakob (Brookline, MA)

1987-01-01T23:59:59.000Z

471

Vitrification of organics-containing wastes  

DOE Patents (OSTI)

A process for stabilizing organics-containing waste materials and recovery metals therefrom, and a waste glass product made according to the process are described. Vitrification of wastes such as organic ion exchange resins, electronic components and the like can be accomplished by mixing at least one transition metal oxide with the wastes, and, if needed, glass formers to compensate for a shortage of silicates or other glass formers in the wastes. The transition metal oxide increases the rate of oxidation of organic materials in the wastes to improve the composition of the glass-forming mixture: at low temperatures, the oxide catalyzes oxidation of a portion of the organics in the waste; at higher temperatures, the oxide dissolves and the resulting oxygen ions oxidize more of the organics; and at vitrification temperatures, the metal ions conduct oxygen into the melt to oxidize the remaining organics. In addition, the transition metal oxide buffers the redox potential of the glass melt so that metals such as Au, Pt, Ag, and Cu separate form the melt in the metallic state and can be recovered. After the metals are recovered, the remainder of the melt is allowed to cool and may subsequently be disposed of. The product has good leaching resistance and can be disposed of in an ordinary landfill, or, alternatively, used as a filler in materials such as concrete, asphalt, brick and tile.

Bickford, D.F.

1995-01-01T23:59:59.000Z

472

Optimized groundwater containment using linear programming  

SciTech Connect

Groundwater extraction systems are typically installed to contain contaminant plumes. These systems are expensive to install and maintain. A traditional approach to designing such a wellfield is to use a series of trial-and-error simulations to test the effects of various well locations and pump rates. However, optimal locations and pump rates of extraction wells are difficult to determine when the objectives of the potential pumping scheme and the site hydrogeology are considered. This paper describes a case study of an application of linear programming theory to determine optimal well placement and pump rates. Calculations were conducted by using ModMan to link a calibrated MODFLOW flow model with LINDO, a linear programming package. Past activities at the site under study included disposal of contaminants in pits. Several groundwater plumes have been identified, and others may be present. The area of concern is bordered on three sides by a wetland, which receives a portion of its input water budget as groundwater discharge from the disposal area. The objective function of the optimization was to minimize the rate of groundwater extraction while preventing discharge to the marsh across a user-specified boundary. In this manner, the optimization routine selects well locations and pump rates to produce a groundwater divide along this boundary.

Quinn, J.J.; Johnson, R.L.; Durham, L.A.

1998-07-01T23:59:59.000Z

473

Improved blue response and efficiency of A-Si:H solar cells deposited from disilane using a dual-chamber plasma system  

SciTech Connect

Thin film amorphous silicon solar cells with glass/SnO/sub 2//p/i/n/Al structures and 6 to 7% AM1 conversion efficiencies were fabricated at rapid deposition rates in a newly constructed dual-chamber glow discharge deposition system. The 500 nm thick intrinsic layer was deposited at the rate of 1.7 nm/s using disilane (Si/sub 2/H/sub 6/)-helium mixtures. This deposition rate is an order of magnitude greater than conventional high efficiency amorphous silicon solar cell depositions. Residual boron doping effects at the p/i interface can severely degrade cell performance particularly when the intrinsic layer is deposited in one chamber of the dual-chamber system and the intrinsic layer is deposited in the other chamber that is free of boron contaminants. Parameters such as electrode spacing, Si/sub 2/H/sub 6/ partial pressure and flow rate were optimized to produce uniform deposition over large areas. At the substrate temperature T/sub s/ selected for solar cell intrinsic layer deposition, the spin density was measured to be a minimum at 5 x 10/sup 15//cm/sup 3/. For a given T/sub s/, an intrinsic layer deposited from Si/sub 2/H/sub 6/ absorbs fewer photons and can generate less current under solar simulation than a similar film produced from monosilane. Identical solar cells were deposited in either the single-chamber mode or the dual-chamber mode for comparison. Single-chamber mode cells perform poorly over the visible wavelengths and hence produce low short circuit currents. The dual-chamber mode cells show a significant improvement in blue response and a factor of two increase in short circuit current over the single-chamber mode cells. Under short circuit conditions, 15 mA/cm/sup 2/ was generated from rapidly deposited (1.7 nm/s) cells from disilane and 18 mA/cm/sup 2/ from low deposition rate (0.18 nm/s) monosilane cells. These values are comparable to or better than those reported for similar cells by other groups.

Rajeswaran, G.; Vanier, P.E.; Corderman, R.R.; Kampas, F.J.

1985-01-01T23:59:59.000Z

474

Clinical Reality of Measuring Upper-Limb Ability in Neurologic Conditions: A Systematic Review  

Science Journals Connector (OSTI)

Connell LA, Tyson SF. Clinical reality of measuring upper-limb ability in neurologic conditions: a systematic review. Objective To review the psychometric properties and clinical utility of upper-limb measurement tools in people with neurologic conditions to provide recommendations for practice. Data Sources MEDLINE, CINAHL, EMBASE, PEDro, and AMED. Study Selection Independent reviewers searched, selected, and extracted data from articles that assessed reliability, validity, ability to detect change, and clinical utility of measures of the upper limb in adult neurologic conditions. Data Extraction Measures with good psychometrics and 8 or higher (out of 10) clinical utility scores were recommended. Data Synthesis The searches identified 31 measures of the upper limb. However, only 2 measures fulfilled all of the psychometric and clinical utility criteria; the Box and Block Test and the Action Research Arm Test. Conclusions The Box and Block and the Action Research Arm Tests produce robust data and are feasible for use in clinical practice. Future development of new or existing measures should ensure the construct and content validity of the measure is clearly identified, standardized guidelines are easily available, and ensure that it is individualized and contemporary. Attention to measures of upper-limb activity for people who are unable to grip objects is also needed.

Louise A. Connell; Sarah F. Tyson

2012-01-01T23:59:59.000Z

475

Depositional facies of hydrocarbon reservoirs of upper Cherokee Group, Anadarko basin  

SciTech Connect

The Desmoinesian upper Cherokee Group sequence in the Anadarko basin is the subsurface equivalent of the Cabaniss Group of eastern Oklahoma. This sequence includes the Pink limestone, Skinner sandstone, Verdigris limestone, and Prue sandstone intervals. The upper Skinner sandstone, which has not been well documented, is an important hydrocarbon-producing reservoir in the Anadarko basin. The Skinner sandstone is represented by channel, delta-front-prodelta, and shallow marine facies. Channel facies consist of a primary elongate trend extending 40 mi southeast-northwest across Custer and Roger Mills Counties, Oklahoma. Several small secondary channels trending northeast-southwest were also observed. Active channel-fill sequences in the primary trend exceed 100 ft in thickness and represent the major producing reservoir of the upper Skinner sandstone. Delta-front-prodelta sequences are dominated by shale and interbedded sandstone-shale units. Shallow marine facies consist of massive coarsening-upward units that reach 300 ft in thickness. This facies belt is broad and slightly elongated, approximately 12 mi wide by 20 mi long, and trends northeast-southwest somewhat normal to channel facies orientation. Lithologically, the upper Skinner channel sandstone is feldspathic litharenite with abundant feldspar and quartz overgrowth. Both primary and secondary porosity were observed in the upper Skinner sandstone. Secondary porosity evolved mainly from dissolution of feldspar and lithic fragments. However, extensive cementation in the shallow marine facies has reduced porosity to negligible amounts and consequently reduced reservoir quality.

Puckette, J.O.; Al-Shaieb, Z. (Oklahoma State Univ., Stillwater (USA))

1989-08-01T23:59:59.000Z

476

Shut-down dose rate analyses for the ITER electron cyclotron-heating upper launcher  

Science Journals Connector (OSTI)

Abstract The electron cyclotron resonance heating upper launcher (ECHUL) is going to be installed in the upper port of the ITER tokamak thermonuclear fusion reactor for plasma mode stabilization (neoclassical tearing modes and the sawtooth instability). The paper reports the latest neutronic modeling and analyses which have been performed for the ITER reference front steering launcher design. It focuses on the port accessibility after reactor shut-down for which dose rate (SDDR) distributions on a fine regular mesh grid were calculated. The results are compared to those obtained for the ITER Dummy Upper Port. The calculations showed that the heterogeneous ECHUL design gives rise to enhanced radiation streaming as compared to the homogenous dummy upper port. Therefore the used launcher geometry was upgraded to a more recent development stage. The inter-comparison shows a significant improvement of the launchers shielding properties but also the necessity to further upgrade the shielding performance. Furthermore, the analysis for the homogenous dummy upper port, which represents optimal shielding inside the launcher, demonstrates that the shielding upgrade also needs to include the launcher's environment.

Bastian Weinhorst; Arkady Serikov; Ulrich Fischer; Lei Lu; Peter Spaeh; Dirk Strauss

2014-01-01T23:59:59.000Z

477

Air kerma standard for calibration of well-type chambers in Brazil using {sup 192}Ir HDR sources and its traceability  

SciTech Connect

In Brazil there are over 100 high dose rate (HDR) brachytherapy facilities using well-type chambers for the determination of the air kerma rate of {sup 192}Ir sources. This paper presents the methodology developed and extensively tested by the Laboratorio de Ciencias Radiologicas (LCR) and presently in use to calibrate those types of chambers. The system was initially used to calibrate six well-type chambers of brachytherapy services, and the maximum deviation of only 1.0% was observed between the calibration coefficients obtained and the ones in the calibration certificate provided by the UWADCL. In addition to its traceability to the Brazilian National Standards, the whole system was taken to University of Wisconsin Accredited Dosimetry Calibration Laboratory (UWADCL) for a direct comparison and the same formalism to calculate the air kerma was used. The comparison results between the two laboratories show an agreement of 0.9% for the calibration coefficients. Three Brazilian well-type chambers were calibrated at the UWADCL, and by LCR, in Brazil, using the developed system and a clinical HDR machine. The results of the calibration of three well chambers have shown an agreement better than 1.0%. Uncertainty analyses involving the measurements made both at the UWADCL and LCR laboratories are discussed.

Di Prinzio, Renato; Almeida, Carlos Eduardo de [Laboratorio de Ciencias Radiologicas-Universidade do Estado do Rio de Janeiro (LCR/UERJ), R. Sao Francisco Xavier, 524, Pavilhao Haroldo Lisboa da Cunha, Terreo, Sala 136-Maracana, CEP 20550-900-Rio de Janeiro/RJ-Rio de Janeiro, RJ (Brazil) and Instituto de Radioprotecao e Dosimetria-Comissao Nacional de Energia Nuclear (IRD/CNEN), Av. Salvador Allende, s/n, Jacarepagua-CE22780-160-Rio de Janeiro, RJ (Brazil); Laboratorio de Ciencias Radiologicas-Universidade do Estado do Rio de Janeiro (LCR/UERJ), R. Sao Francisco Xavier, 524, Pavilhao Haroldo Lisboa da Cunha, Terreo, Sala 136-Maracana, CEP 20550-900-Rio de Janeiro/RJ-Rio de Janeiro, RJ (Brazil)

2009-03-15T23:59:59.000Z

478

An early history of pure shear in the upper plate of the raft river  

Open Energy Info (EERE)

early history of pure shear in the upper plate of the raft river early history of pure shear in the upper plate of the raft river metamorphic core complex- black pine mountains, southern Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An early history of pure shear in the upper plate of the raft river metamorphic core complex- black pine mountains, southern Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Although commonly obscured by simple shear, pure shear fabrics occur locally within many metamorphic core complexes. The cover rocks to the Raft River metamorphic core complex exposed within the Black Pine Mountains display an early coaxial strain history which developed prior to the formation of low-angle fault-bounded allochthons. At higher structural levels this is documented by pressure shadows with straight sutures, and

479

An Integrated Geophysical Analysis Of The Upper Crust Of The Southern Kenya  

Open Energy Info (EERE)

Upper Crust Of The Southern Kenya Upper Crust Of The Southern Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Integrated Geophysical Analysis Of The Upper Crust Of The Southern Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: Previous interpretations of seismic data collected by the Kenya Rift International Seismic Project (KRISP) experiments indicate the presence of crustal thickening within the rift valley area beneath the Kenya dome, an uplift centred on the southern part of the Kenya rift. North of the dome, these interpretations show thinning of the crust and an increase in crustal extension. To the south near the Kenya/Tanzania border, crustal thinning associated with the rift is modest. Our study was aimed at further investigating crustal structure from this dome southwards via a

480

A Case Study Of The Influx Of Upper Mantle Fluids Into The Crust | Open  

Open Energy Info (EERE)

Influx Of Upper Mantle Fluids Into The Crust Influx Of Upper Mantle Fluids Into The Crust Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Case Study Of The Influx Of Upper Mantle Fluids Into The Crust Details Activities (0) Areas (0) Regions (0) Abstract: Geochemical and geophysical investigations in the Bohai Gulf and adjacent areas, China, indicate that uplift of the high-conductivity layer in the lithosphere coincides with the area of high heat flow. In this area are distributed abundant oil and gas fields in a Tertiary fault basin and also large quantities of basaltic rocks. Gas fields, mostly CO2 bearing, occur at the basin margins, where a widespread alkaline olivine basalt has high contents of gold. Geochemical prospecting of the surface (soil and soil gas) in the area indicates that there is an anomaly zone of

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481

Understanding the importance of natural neuromotor strategy in upper extremity neuroprosthetic control  

Science Journals Connector (OSTI)

A key challenge in upper extremity neuroprosthetics is variable levels of skill and inconsistent functional recovery. We examine the feasibility and benefits of using natural neuromotor strategies through the design and development of a proof-of-concept model for a feed-forward upper extremity neuroprosthetic controller. Developed using Artificial Neural Networks, the model is able to extract and classify neural correlates of movement intention from multiple brain regions that correspond to functional movements. This is unique compared to contemporary controllers that record from limited physiological sources or require learning of new strategies. Functional MRI (fMRI) data from healthy subjects (N = 13) were used to develop the model, and a separate group (N = 4) of subjects were used for validation. Results indicate that the model is able to accurately (81%) predict hand movement strictly from the neural correlates of movement intention. Information from this study is applicable to the development of upper extremity technology aided interventions.

Dominic E. Nathan; Robert W. Prost; Stephen J. Guastello; Dean C. Jeutter

2014-01-01T23:59:59.000Z

482

An Upper Limit to the Mass of rho1 Cnc's Radial Velocity Companion  

E-Print Network (OSTI)

Doppler spectroscopy of rho1 Cnc has detected evidence of a companion with an orbital period of 14.65 days and a minimum mass of 0.88 Jupiter masses. Astrometric observations performed with the Hubble Space Telescope Fine Guidance Sensor 1r using a novel new observing technique have placed an upper limit on the astrometric reflex motion of rho1 Cnc in a time period of only one month. These observations detected no reflex motion induced by the 14.65 day period radial velocity companion, allowing us to place a 3-sigma upper limit of \\~0.3 milliarcseconds on the semi-major axis of this motion, ruling out the preliminary Hipparcos value of 1.15 milliarcseconds. The corresponding upper limit on the true mass of the companion is ~30 Mj, confirming that it is a sub-stellar object.

Melissa A. McGrath; Edmund Nelan; David C. Black; George Gatewood; Keith Noll; Al Schultz; Stephen Lubow; Inwoo Han; Tomasz F. Stepinski; Thomas Targett

2001-12-03T23:59:59.000Z

483

Dynamic Positional Change and Defocus Curve of a Phakic Foldable Anterior-Chamber Angle-Supported Intraocular Lens during Accommodation  

Science Journals Connector (OSTI)

Objective To evaluate movements of an anterior-chamber angle-supported phakic intraocular lens (PIOL) Cachet (Alcon, Fort Worth, Texas) and their influence on visual acuity during accommodation. Design Prospective case series. Participants We included 54 eyes of 27 patients (15 female, 12 male; age, 387.61 years; preoperative manifest spherical equivalent ?8.72.5 diopters [D]). Methods Evaluation of the PIOL's positional stability (distance to the corneal endothelium [M1] and the natural lens [M2]) as well as the pre- and postoperative anterior chamber depth (ACD) and pupil diameter (PD). Measurements were performed for accommodation stimuli ranging from ?7 to +1 D in 1-D increments using optical coherence tomography (Visante OCT, Carl Zeiss Meditec, Jena, Germany). The respective defocus curve was evaluated using Early Treatment Diabetic Retinopathy Study charts. Statistical analysis included a Kolmogoroff-Smirnov test for parametric distribution, a Friedman- and consecutive Conover-Iman-Bonferroni test for detection of PD, ACD, and defocus curve differences from before to after the operation, a 1-sided t test for analysis of positional changes (?PD, ?ACD, and ?M values compared with a zero stimulus position), and a regression analysis for the evaluation of influence of age, IOL diameter, and power on ?-values. Significance was set at P = 0.05. Main Outcome Measures Postoperative ?M values. Results The PD, ?PD, ACD, and ?ACD did not differ significantly between pre- and postoperative values. The ?M1 and ?M2 differed significantly from the zero-stimulus position for defocus stimuli of ??3 D and ??2D, respectively; mean ?M1max was ?0.090.06 mm for ?7-D stimulus; mean ?M2max was ?0.090.10 mm for ?5-/?6-D stimulus. Apart from ?PD, all ?-values decreased with age. Visual acuity was significantly better postoperatively for defocus stimuli between 0 and ?3 D. Conclusions The anterior-chamber angle-supported PIOL changes its position during accommodation only marginally. The PIOL does not affect postoperative accommodation. Financial Disclosure(s) Proprietary or commercial disclosure may be found after the references.

Oliver K. Klaproth; Jrg Rehrmann; Thomas Kohnen

2013-01-01T23:59:59.000Z

484

Hydrochemistry and hydrogeologic conditions within the Hanford Site upper basalt confined aquifer system  

SciTech Connect

As part of the Hanford Site Ground-Water Surveillance Project, Flow System Characterization Task. Pacific Northwest Laboratory examines the potential for offsite migration of contamination within the upper basalt confined aquifer system for the US Department of Energy (DOE). As part of this activity, groundwater samples were collected over the past 2 years from selected wells completed in the upper Saddle Mountains Basalt. The hydrochemical and isotopic information obtained from these groundwater samples provides hydrologic information concerning the aquifer-flow system. Ideally, when combined with other hydrologic property information, hydrochemical and isotopic data can be used to evaluate the origin and source of groundwater, areal groundwater-flow patterns, residence and groundwater travel time, rock/groundwater reactions, and aquifer intercommunication for the upper basalt confined aquifer system. This report presents the first comprehensive Hanford Site-wide summary of hydrochemical properties for the upper basalt confined aquifer system. This report provides the hydrogeologic characteristics (Section 2.0) and hydrochemical properties (Section 3.0) for groundwater within this system. A detailed description of the range of the identified hydrochemical parameter subgroups for groundwater in the upper basalt confined aquifer system is also presented in Section 3.0. Evidence that is indicative of aquifer contamination/aquifer intercommunication and an assessment of the potential for offsite migration of contaminants in groundwater within the upper basalt aquifer is provided in Section 4.0. The references cited throughout the report are given in Section 5.0. Tables that summarize groundwater sample analysis results for individual test interval/well sites are included in the Appendix.

Spane, F.A. Jr.; Webber, W.D.

1995-09-01T23:59:59.000Z

485

Estimated Costs and Returns for Catfish Farms with Recirculating Ponds Along the Upper Texas Coast.  

E-Print Network (OSTI)

_TDOC ' Z TA24S.7 8873 NO.1704 - . , ., TEXAS A&M UNIVERSHY LIBRARY for Catfish Farms ' with Recirculating Ponds Along ? . . the Upper Texas Coast ~7'!K~fi~~~ation ? J. Charles Lee: Interim Director? The Texas A&M University System ? C...~J1ege Station, Texas :,. .,: (Blank Page in OrigiBal BuBetiol ' 1iJ. ~ ; :; . : . . / I Estimated Costs and Returns for Catfish Farms with Recirculating Ponds Along the Upper Texas Coast J.A.D. Lambregts, Marketing Manager for Niaid...

Lambregts, J.A.D.; Griffin, W.L.; Lacewell R.D.; Davis, J.T.; Clary, G.M.

1992-01-01T23:59:59.000Z

486

Robot-Assisted Therapy for Long-Term Upper-Limb Impairment after Stroke  

Science Journals Connector (OSTI)

Robot-Assisted Therapy for Long-Term Upper-Limb Impairment after Stroke Original Article, N Engl J Med 2010;362:1772-1783. In the Cost Analysis subsection of Results (page 1779), the dollar values given in the first two sentences were incorrect. The sentences should have read, "The average per-patient... Robot-Assisted Therapy for Long-Term Upper-Limb Impairment after Stroke Original Article, N Engl J Med 2010;362:1772-1783. In the Cost Analysis subsection of Results (page 1779), the dollar values given in the first two sentences were incorrect. The ...

2011-11-03T23:59:59.000Z

487

Shallow geologic features of the upper continental slope, northwestern Gulf of Mexico  

E-Print Network (OSTI)

SHALLOW GEOLCGIC FEATURES OF THE UPPER CONTI~wAL SLOPE, NORTHWESTERN GULF OF MEXICO A Thesis by TOK~ EDWIN TATUM, JR. Submitted to the Graduate ColleSe of Texas A&N University in partial fulfill . ent of the requirement fo= the deenee cf i...%STER F SCIENCE December. 1977 Najoz Subject: 3c ano~phy SHALLOW GEOLOGIC FEATURES OF THE UPPER CONTINENTAL SLOPE, NORTHWESTERN GUIZ OF ?EXICO A Thesis by TOMMY EDWIN TATUM, JR. Approved as to sty'e and content by: (Chairman of Committee Head...

Tatum, Tommy Edwin

2012-06-07T23:59:59.000Z

488

Essays on the Upper Mississippi River and Illinois Waterway and U.S. grain market  

E-Print Network (OSTI)

navigation efficiency was initiated by the U.S. Army of Corps Engineers in 1993 (USACE, 1997). The Corps proposed to expand five 600- foot long locks (locks 20, 21, 22, 24, 25) on the Upper Mississippi River and locks Peoria and LaGrange on the Illinois... 1). Among the eight locks on the Illinois River, lock LaGrange had the highest average delay of 3.96 hours during the 1980 to 1999 period. Further, although the average delay time of delayed vessels at each lock on the lower portion of the Upper...

Yu, Tun-Hsiang

2005-08-29T23:59:59.000Z

489

Decay instability of an upper hybrid wave in a magnetized dusty plasmas  

SciTech Connect

The decay instability of an upper hybrid wave into an upper hybrid sideband wave and low frequency ion-cyclotron wave are studied in a magnetized dusty plasma cylinder. The growth rate and ion-cyclotron mode frequencies were evaluated based on existing dusty plasma parameters. It is found that the unstable mode frequency increases linearly with {delta} (ion-to-electron density ratio). In addition, the growth rate of the unstable ion-cyclotron mode decreases sharply for lower values of {delta} in the presence of dust charge fluctuations, i.e., the dust grains increases the damping effect in three wave interaction process.

Gahlot, Ajay [Maharaja Surajmal Institute of Technology, C-4, Janakpuri, New Delhi (India); Walia, Ritu [Department of Physics, Maharaja Agrasen Institute of Technology, PSP Area Plot No.-1, Sector-22, Rohini, Delhi 110 086 (India); Sharma, Jyotsna [Department of Physics, KIIT College of Engineering, Gurgaon 122102 (India); Sharma, Suresh C.; Sharma, Rinku [Department of Applied Physics, Delhi Technological University, Shahbad Daulatpur, Bawana Road, Delhi 110 042 (India)

2013-01-15T23:59:59.000Z

490

Currents and waters of the upper 1200 meters of the southwestern Gulf of Mexico  

E-Print Network (OSTI)

CURRENTS AND WATERS OF THE UPPER 1200 METERS OF THE SOUTHWESTERN GULF OF MEXICO A Thesis by ALBERTO MARIANO VAZQUEZ DE LA CERDA Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE August 1975 Major Subject: Oceanography CURRENTS AND WATERS OF THE UPPER 1200 METERS OF THE SOUTHWESTERN GULF OP MEXICO A Thesis by ALBERTO MARIANO VAZ0UEZ DE LA CERDA Approved as to style and content by: , , l (Chairman...

Vasquez de la Cerda, Alberto Mariano

1975-01-01T23:59:59.000Z

491

How to recycle asbestos containing materials (ACM)  

SciTech Connect

The current disposal of asbestos containing materials (ACM) in the private sector consists of sealing asbestos wetted with water in plastic for safe transportation and burial in regulated land fills. This disposal methodology requires large disposal volumes especially for asbestos covered pipe and asbestos/fiberglass adhering to metal framework, e.g. filters. This wrap and bury technology precludes recycle of the asbestos, the pipe and/or the metal frameworks. Safe disposal of ACM at U.S. Department of Energy (DOE) sites, likewise, requires large disposal volumes in landfills for non-radioactive ACM and large disposal volu