Sample records for aluminized reflector par

  1. Development and Testing of Solar Reflectors

    SciTech Connect (OSTI)

    Kennedy, C.; Terwilliger, K.; Milbourne, M.

    2005-01-01T23:59:59.000Z

    To make concentrating solar power technologies more cost competitive, it is necessary to develop advanced reflector materials that are low in cost and maintain high reflectance for extended lifetimes under severe outdoor environments. The Advanced Materials Team performs durability testing of candidate solar reflectors at outdoor test sites and in accelerated weathering chambers. Several materials being developed by industry have been submitted for evaluation. These include silvered glass mirrors, aluminized reflectors, and front-surface mirrors. In addition to industry-supplied materials, NREL is funding the development of new, innovative reflectors, including a new commercial laminate reflector and an advanced solar reflective mirror (ASRM). To help commercialize the ASRM, a cost analysis was performed; it shows the total production cost could meet the goal. The development, performance, and durability of these candidate solar reflectors and cost analysis results will be described.

  2. Reactive Air Aluminization

    SciTech Connect (OSTI)

    Choi, Jung-Pyung; Chou, Y. S.; Stevenson, Jeffry W.

    2011-10-28T23:59:59.000Z

    Ferritic stainless steels and other alloys are of great interest to SOFC developers for applications such as interconnects, cell frames, and balance of plant components. While these alloys offer significant advantages (e.g., low material and manufacturing cost, high thermal conductivity, and high temperature oxidation resistance), there are challenges which can hinder their utilization in SOFC systems; these challenges include Cr volatility and reactivity with glass seals. To overcome these challenges, protective coatings and surface treatments for the alloys are under development. In particular, aluminization of alloy surfaces offers the potential for mitigating both evaporation of Cr from the alloy surface and reaction of alloy constituents with glass seals. Commercial aluminization processes are available to SOFC developers, but they tend to be costly due to their use of exotic raw materials and/or processing conditions. As an alternative, PNNL has developed Reactive Air Aluminization (RAA), which offers a low-cost, simpler alternative to conventional aluminization methods.

  3. Optical Durability of Candidate Solar Reflectors for Concentrating Solar Power

    SciTech Connect (OSTI)

    Kennedy, C. E.; Terwilliger, K.

    2007-01-01T23:59:59.000Z

    Concentrating solar power (CSP) technologies use large mirrors to collect sunlight to convert thermal energy to electricity. The viability of CSP systems requires the development of advanced reflector materials that are low in cost and maintain high specular reflectance for extended lifetimes under severe outdoor environments. The long-standing goals for a solar reflector are specular reflectance above 90% into a 4 mrad half-cone angle for at least 10 years outdoors with a cost of less than $13.8/m{sup 2} (the 1992 $10.8/m{sup 2} goal corrected for inflation to 2002 dollars) when manufactured in large volumes. Durability testing of a variety of candidate solar reflector materials at outdoor test sites and in laboratory accelerated weathering chambers is the main activity within the Advanced Materials task of the CSP Program at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. Test results to date for several candidate solar reflector materials will be presented. These include the optical durability of thin glass, thick glass, aluminized reflectors, front-surface mirrors, and silvered polymer mirrors. The development, performance, and durability of these materials will be discussed. Based on accelerated exposure testing the glass, silvered polymer, and front-surface mirrors may meet the 10 year lifetime goals, but at this time because of significant process changes none of the commercially available solar reflectors and advanced solar reflectors have demonstrated the 10 year or more aggressive 20 year lifetime goal.

  4. Nuclear reactor reflector

    DOE Patents [OSTI]

    Hopkins, Ronald J. (Pensacola, FL); Land, John T. (Pensacola, FL); Misvel, Michael C. (Pensacola, FL)

    1994-01-01T23:59:59.000Z

    A nuclear reactor reflector is disclosed that comprises a stack of reflector blocks with vertical water flow passages to cool the reflector. The interface between blocks is opposite support points for reactor fuel rods. Water flows between the reflector and the reactor barrel from passages in a bottom block. The top block contains a flange to limit this flow and the flange has a slot to receive an alignment pin that is welded to the barrel. The pin is held in the slot by two removable shims. Alignment bars extend the length of the stack in slots machined in each block when the stack is assembled.

  5. Nuclear reactor reflector

    DOE Patents [OSTI]

    Hopkins, R.J.; Land, J.T.; Misvel, M.C.

    1994-06-07T23:59:59.000Z

    A nuclear reactor reflector is disclosed that comprises a stack of reflector blocks with vertical water flow passages to cool the reflector. The interface between blocks is opposite support points for reactor fuel rods. Water flows between the reflector and the reactor barrel from passages in a bottom block. The top block contains a flange to limit this flow and the flange has a slot to receive an alignment pin that is welded to the barrel. The pin is held in the slot by two removable shims. Alignment bars extend the length of the stack in slots machined in each block when the stack is assembled. 12 figs.

  6. Advanced Manufacture of Reflectors

    Broader source: Energy.gov [DOE]

    The Advance Manufacture of Reflectors fact sheet describes a SunShot Initiative project being conducted research team led by the University of Arizona, which is working to develop a novel method for shaping float glass. The technique developed by this research team can drastically reduce the time required for the shaping step. By enabling mass production of solar concentrating mirrors at high speed, this project should lead to improved performance and as much as a 40% reduction in manufacturing costs for reflectors made in very high volume.

  7. aluminized teflon fep: Topics by E-print Network

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

    of spinel oxides: zinc aluminate and zinc gallate Suresh K Sampath, D G Kanhere 20 October 1998 Abstract. The electronic structure of zinc aluminate (ZnAl2O4) and that of zinc...

  8. Phosphate-bonded calcium aluminate cements

    DOE Patents [OSTI]

    Sugama, Toshifumi (Mastic Beach, NY)

    1993-01-01T23:59:59.000Z

    A method is described for making a rapid-setting phosphate-bonded cementitious material. A powdered aluminous cement is mixed with an aqueous solution of ammonium phosphate. The mixture is allowed to set to form an amorphous cementitious material which also may be hydrothermally treated at a temperature of from about 120.degree. C. to about 300.degree. C. to form a crystal-containing phosphate-bonded material. Also described are the cementitious products of this method and the cement composition which includes aluminous cement and ammonium polyphosphate.

  9. Phosphate-bonded calcium aluminate cements

    DOE Patents [OSTI]

    Sugama, T.

    1993-09-21T23:59:59.000Z

    A method is described for making a rapid-setting phosphate-bonded cementitious material. A powdered aluminous cement is mixed with an aqueous solution of ammonium phosphate. The mixture is allowed to set to form an amorphous cementitious material which also may be hydrothermally treated at a temperature of from about 120 C to about 300 C to form a crystal-containing phosphate-bonded material. Also described are the cementitious products of this method and the cement composition which includes aluminous cement and ammonium polyphosphate. 10 figures.

  10. Space Reflector Materials for Prometheus Application

    SciTech Connect (OSTI)

    J. Nash; V. Munne; LL Stimely

    2006-01-31T23:59:59.000Z

    The two materials studied in depth which appear to have the most promise in a Prometheus reflector application are beryllium (Be) and beryllium oxide (BeO). Three additional materials, magnesium oxide (MgO), alumina (Al{sub 2}O{sub 3}), and magnesium aluminate spinel (MgAl{sub 2}O{sub 4}) were also recently identified to be of potential interest, and may have promise in a Prometheus application as well, but are expected to be somewhat higher mass than either a Be or BeO based reflector. Literature review and analysis indicates that material properties for Be are largely known, but there are gaps in the properties of Be0 relative to the operating conditions for a Prometheus application. A detailed preconceptual design information document was issued providing material properties for both materials (Reference (a)). Beryllium oxide specimens were planned to be irradiated in the JOY0 Japanese test reactor to partially fill the material property gaps, but more testing in the High Flux Isotope Reactor (HFIR) test reactor at Oak Ridge National Laboratory (ORNL) was expected to be needed. A key issue identified for BeO was obtaining material for irradiation testing with an average grain size of {approx}5 micrometers, reminiscent of material for which prior irradiation test results were promising. Current commercially available material has an average grain size of {approx}10 micrometers. The literature indicated that improved irradiation performance could be expected (e.g., reduced irradiation-induced swelling) with the finer grain size material. Confirmation of these results would allow the use of historic irradiated materials test results from the literature, reducing the extent of required testing and therefore the cost of using this material. Environmental, safety and health (ES&H) concerns associated with manufacturing are significant but manageable for Be and BeO. Although particulate-generating operations (e.g., machining, grinding, etc.) involving Be-bearing materials require significant controls, handling of clean, finished products requires only modest controls. Neither material was initially considered to be viable as a structural material, however, based on improved understanding of its unirradiated properties, Be should be evaluated due to having potentially acceptable structural properties in the unirradiated condition, i. e., during launch, when loads might be most limiting. All three of the alternative materials are non-hazardous, and thus do not engender the ES&H concerns associated with use of Be or BeO. Aluminum oxide is a widely available ceramic material with well characterized physical properties and well developed processing practices. Although the densest (3.97 g/cm{sup 3} versus Be: 1.85, BeO: 3.01, MgO: 3.58, and MgAl{sub 2}O{sub 4}: 3.60, all theoretical density), and therefore the heaviest, of all the materials considered for this application, its ease of fabrication, mechanical properties, availability and neutronic characteristics warrant its evaluation. Similarly, MgO is widely used in the refractory materials industry and has a large established manufacturing base while being lighter than Al{sub 2}O{sub 3}. Most of the commercially available MgO products incorporate additives or a second phase to avoid the formation of Mg(OH){sub 2} due to spontaneous reaction with ambient humidity. The hygroscopicity of MgO makes it a more difficult material to work with than Al{sub 2}O{sub 3} or MgAl{sub 2}O{sub 4}. Magnesium aluminate spinel, although not as widely available as either Al{sub 2}O{sub 3} or MgO, has the advantage of a density almost as low as MgO without being hygroscopic, and shares comparable neutronic performance characteristics in the reflector application.

  11. Advanced Manufacture of Reflectors

    SciTech Connect (OSTI)

    Angel, Roger [University of Arizona

    2014-12-17T23:59:59.000Z

    The main project objective has been to develop an advanced gravity sag method for molding large glass solar reflectors with either line or point focus, and with long or short focal length. The method involves taking standard sized squares of glass, 1.65 m x 1.65 m, and shaping them by gravity sag into precision steel molds. The method is designed for high volume manufacture when incorporated into a production line with separate pre-heating and cooling. The performance objectives for the self-supporting glass mirrors made by this project include mirror optical accuracy of 2 mrad root mean square (RMS), requiring surface slope errors <1 mrad rms, a target not met by current production of solar reflectors. Our objective also included development of new methods for rapidly shaping glass mirrors and coating them for higher reflectivity and soil resistance. Reflectivity of 95% for a glass mirror with anti-soil coating was targeted, compared to the present ~94% with no anti-soil coating. Our mirror cost objective is ~$20/m2 in 2020, a significant reduction compared to the present ~$35/m2 for solar trough mirrors produced for trough solar plants. During the first year a custom batch furnace was built to develop the method with high power radiative heating to simulate transfer of glass into a hot slumping zone in a production line. To preserve the original high polish of the float glass on both front and back surfaces, as required for a second surface mirror, the mold surface is machined to the required shape as grooves which intersect the glass at cusps, reducing the mold contact area to significantly less than 1%. The mold surface is gold-plated to reflect thermal radiation. Optical metrology of glass replicas made with the system has been carried out with a novel, custom-built test system. This test provides collimated, vertically-oriented parallel beams from a linear array of co-aligned lasers translated in a perpendicular direction across the reflector. Deviations of each reflected beam from the paraboloid focus give a direct measure of surface slope error. Key findings • A gravity sag method for large (2.5 m2) second surface glass solar reflectors has been developed and demonstrated to a uniquely high level of accuracy. Mirror surface slope accuracy of 0.65 mrad in one dimension, 0.85 mrad in 2 dimensions (point focus) has been demonstrated by commercial partner REhnu using this process. This accuracy exceeds by a factor of two current solar reflector accuracy. Our replicas meet the Sunshot accuracy objective of 2 mrad optical, which requires better than 1 mrad rms slope error. • Point-focus as well as line-focus mirrors have been demonstrated at 1.65 m x 1.65 m square – a unique capability. • The new process using simple molds is economical. The molds for the 1.65 m square reflectors are bent and machined steel plates on a counter-weighted flotation support. To minimize thermal coupling by radiative heat transfer, the mold surface is grooved and gilded. The molds are simple to manufacture, and have minimal thermal stresses and distortion in use. Lapping and bending techniques have been developed to obtain better than 1 mrad rms surface mold accuracy. Float glass is sagged into the molds by rapid radiative heating, using a custom high power (350 kW) furnace. The method of manufacture is well suited for small as well as large volume production, and as it requires little capital investment and no high technology, it could be used anywhere in the world to make solar concentrating reflectors. • A novel slope metrology method for full 1.65 aperture has been demonstrated, with 25 mm resolution across the face of the replicas. The method is null and therefore inherently accurate: it can easily be reproduced without high-tech equipment and does not need sophisticated calibration. We find by cross calibration with reference trough reflectors from RioGlass that our null-test laser system yields a measurement accuracy better than 0.4 mrad rms slope error. Our system is inexpensive and could have broad application for test

  12. Reflectors for SAR performance testing.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2008-01-01T23:59:59.000Z

    Synthetic Aperture Radar (SAR) performance testing and estimation is facilitated by observing the system response to known target scene elements. Trihedral corner reflectors and other canonical targets play an important role because their Radar Cross Section (RCS) can be calculated analytically. However, reflector orientation and the proximity of the ground and mounting structures can significantly impact the accuracy and precision with which measurements can be made. These issues are examined in this report.

  13. Reflector system for a lighting fixture

    DOE Patents [OSTI]

    Siminovitch, Michael J. (829 Manor Rd., El Sobrante, CA 94803); Page, Erik (Berkeley, CA); Gould, Carl T. (Medford, OR)

    2001-01-01T23:59:59.000Z

    Disclosed herein is a reflector system for a lighting fixture having a illumination source surrounded by an envelope. The reflector system includes a first reflector surrounding the illumination source. The reflector system also includes a second reflector which is non-contiguous with the first reflector and which surrounds the illumination source. The illumination source creates light rays which are reflected by the first and second reflectors. The first reflector directs light rays toward the center line of the fixture. However, the reflected rays despite being so reflected do not substantially intersect the envelope. The reflected light rays from the second reflector being directed so that they diverge from the center line of the fixture avoiding intersection with the semi-transparent envelope.

  14. Reflector system for a lighting fixture

    DOE Patents [OSTI]

    Siminovitch, Michael J. (El Sobrante, CA); Page, Erik (Berkeley, CA); Gould, Carl T. (Medford, OR)

    1998-01-01T23:59:59.000Z

    Disclosed herein is a reflector system for a lighting fixture having a illumination source surrounded by an envelope. The reflector system includes a first reflector surrounding the illumination source. The reflector system also includes a second reflector which is non-contiguous with the first reflector and which surrounds the illumination source. The illumination source creates light rays which are reflected by the first and second reflectors. The first reflector directs light rays toward the center line of the fixture. However, the reflected rays despite being so reflected do not substantially intersect the envelope. The reflected light rays from the second reflector being directed so that they diverge from the center line of the fixture avoiding intersection with the semi-transparent envelope.

  15. Reflector system for a lighting fixture

    DOE Patents [OSTI]

    Siminovitch, M.J.; Page, E.; Gould, C.T.

    1998-09-08T23:59:59.000Z

    Disclosed herein is a reflector system for a lighting fixture having a illumination source surrounded by an envelope. The reflector system includes a first reflector surrounding the illumination source. The reflector system also includes a second reflector which is non-contiguous with the first reflector and which surrounds the illumination source. The illumination source creates light rays which are reflected by the first and second reflectors. The first reflector directs light rays toward the center line of the fixture. However, the reflected rays despite being so reflected do not substantially intersect the envelope. The reflected light rays from the second reflector being directed so that they diverge from the center line of the fixture avoiding intersection with the semi-transparent envelope. 5 figs.

  16. Lamp bulb with integral reflector

    DOE Patents [OSTI]

    Levin, Izrail (Silver Spring, MD); Shanks, Bruce (Gaithersburg, MD); Sumner, Thomas L. (Wheaton, MD)

    2001-01-01T23:59:59.000Z

    An improved electrodeless discharge lamp bulb includes an integral ceramic reflector as a portion of the bulb envelope. The bulb envelope further includes two pieces, a reflector portion or segment is cast quartz ceramic and a light transmissive portion is a clear fused silica. In one embodiment, the cast quartz ceramic segment includes heat sink fins or stubs providing an increased outside surface area to dissipate internal heat. In another embodiment, the quartz ceramic segment includes an outside surface fused to eliminate gas permeation by polishing.

  17. Copper Aluminate as a potential material for high temperature...

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

    Copper Aluminate as a potential material for high temperature thermoelectric power generation Home Author: D. T. Morelli, E. D. Case, B. D. Hall, S. Wang Year: 2008 Abstract: URL:...

  18. Lamp with a truncated reflector cup

    DOE Patents [OSTI]

    Li, Ming; Allen, Steven C.; Bazydola, Sarah; Ghiu, Camil-Daniel

    2013-10-15T23:59:59.000Z

    A lamp assembly, and method for making same. The lamp assembly includes first and second truncated reflector cups. The lamp assembly also includes at least one base plate disposed between the first and second truncated reflector cups, and a light engine disposed on a top surface of the at least one base plate. The light engine is configured to emit light to be reflected by one of the first and second truncated reflector cups.

  19. Advanced Reflector and Absorber Materials (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-08-01T23:59:59.000Z

    Fact sheet describing NREL CSP Program capabilities in the area of advanced reflector and absorber materials: evaluating performance, determining degradation rates and lifetime, and developing new coatings.

  20. Distributed Bragg Reflectors With Reduced Optical Absorption

    DOE Patents [OSTI]

    Klem, John F. (Albuquerque, NM)

    2005-08-16T23:59:59.000Z

    A new class of distributed Bragg reflectors has been developed. These distributed Bragg reflectors comprise interlayers positioned between sets of high-index and low-index quarter-wave plates. The presence of these interlayers is to reduce photon absorption resulting from spatially indirect photon-assisted electronic transitions between the high-index and low-index quarter wave plates. The distributed Bragg reflectors have applications for use in vertical-cavity surface-emitting lasers for use at 1.55 .mu.m and at other wavelengths of interest.

  1. Solar central receiver heliostat reflector assembly

    DOE Patents [OSTI]

    Horton, Richard H. (Schenectady, NY); Zdeb, John J. (Clifton Park, NY)

    1980-01-01T23:59:59.000Z

    A heliostat reflector assembly for a solar central receiver system comprises a light-weight, readily assemblable frame which supports a sheet of stretchable reflective material and includes mechanism for selectively applying tension to and positioning the sheet to stretch it to optical flatness. The frame is mounted on and supported by a pipe pedestal assembly that, in turn, is installed in the ground. The frame is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e. central receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The frame may include a built-in system for testing for optical flatness of the reflector. The preferable geometric configuration of the reflector is octagonal; however, it may be other shapes, such as hexagonal, pentagonal or square. Several different embodiments of means for tensioning and positioning the reflector to achieve optical flatness are disclosed. The reflector assembly is based on the stretch frame concept which provides an extremely light-weight, simple, low-cost reflector assembly that may be driven for positioning and tracking by a light-weight, inexpensive drive system.

  2. Nuclear Transmutations in HFIR's Beryllium Reflector and Their Impact on Reactor Operation and Reflector Disposal

    SciTech Connect (OSTI)

    Chandler, David [ORNL; Maldonado, G Ivan [ORNL; Primm, Trent [ORNL; Proctor, Larry Duane [ORNL

    2012-01-01T23:59:59.000Z

    The High Flux Isotope Reactor located at the Oak Ridge National Laboratory utilizes a large cylindrical beryllium reflector that is subdivided into three concentric regions and encompasses the compact reactor core. Nuclear transmutations caused by neutron activation occur in the beryllium reflector regions, which leads to unwanted neutron absorbing and radiation emitting isotopes. During the past year, two topics related to the HFIR beryllium reflector were reviewed. The first topic included studying the neutron poison (helium-3 and lithium-6) buildup in the reflector regions and its affect on beginning-of-cycle reactivity. A new methodology was developed to predict the reactivity impact and estimated symmetrical critical control element positions as a function of outage time between cycles due to helium-3 buildup and was shown to be in better agreement with actual symmetrical critical control element position data than the current methodology. The second topic included studying the composition of the beryllium reflector regions at discharge as well as during decay to assess the viability of transporting, storing, and ultimately disposing the reflector regions currently stored in the spent fuel pool. The post-irradiation curie inventories were used to determine whether the reflector regions are discharged as transuranic waste or become transuranic waste during the decay period for disposal purposes and to determine the nuclear hazard category, which may affect the controls invoked for transportation and temporary storage. Two of the reflector regions were determined to be transuranic waste at discharge and the other region was determined to become transuranic waste in less than 2 years after being discharged due to the initial uranium content (0.0044 weight percent uranium). It was also concluded that all three of the reflector regions could be classified as nuclear hazard category 3 (potential for localized consequences only).

  3. Dual annular rotating "windowed" nuclear reflector reactor control system

    DOE Patents [OSTI]

    Jacox, Michael G. (Idaho Falls, ID); Drexler, Robert L. (Idaho Falls, ID); Hunt, Robert N. M. (Idaho Falls, ID); Lake, James A. (Idaho Falls, ID)

    1994-01-01T23:59:59.000Z

    A nuclear reactor control system is provided in a nuclear reactor having a core operating in the fast neutron energy spectrum where criticality control is achieved by neutron leakage. The control system includes dual annular, rotatable reflector rings. There are two reflector rings: an inner reflector ring and an outer reflector ring. The reflectors are concentrically assembled, surround the reactor core, and each reflector ring includes a plurality of openings. The openings in each ring are capable of being aligned or non-aligned with each other. Independent driving means for each of the annular reflector rings is provided so that reactor criticality can be initiated and controlled by rotation of either reflector ring such that the extent of alignment of the openings in each ring controls the reflection of neutrons from the core.

  4. Method of winning aluminum metal from aluminous ore

    DOE Patents [OSTI]

    Loutfy, Raouf O. (Naperville, IL); Keller, Rudolf (Naperville, IL); Yao, Neng-Ping (Clarendon Hills, IL)

    1981-01-01T23:59:59.000Z

    Aluminous ore such as bauxite containing alumina is blended with coke or other suitable form of carbon and reacted with sulfur gas at an elevated temperature. For handling, the ore and coke can be extruded into conveniently sized pellets. The reaction with sulfur gas produces molten aluminum sulfide which is separated from residual solid reactants and impurities. The aluminum sulfide is further increased in temperature to cause its decomposition or sublimation, yielding aluminum subsulfide liquid (AlS) and sulfur gas that is recycled. The aluminum monosulfide is then cooled to below its disproportionation temperature to again form molten aluminum sulfide and aluminum metal. A liquid-liquid or liquid-solid separation, depending on the separation temperature, provides product aluminum and aluminum sulfide for recycle to the disproportionation step.

  5. BERKELEY PAR LABBERKELEY PAR LAB Where we ended up

    E-Print Network [OSTI]

    California at Berkeley, University of

    , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 #12;BERKELEY PAR

  6. Occupancy and site distribution of europium in barium magnesium aluminate Eu Mossbauer spectroscopy

    E-Print Network [OSTI]

    Boolchand, Punit

    Occupancy and site distribution of europium in barium magnesium aluminate by 151 Eu Mo¨ssbauer Mo¨ssbauer spectroscopy. Analysis of the Mo¨ssbauer line shapes reveals a pentamodal or higher site

  7. Compact directed percolation with movable partial reflectors

    E-Print Network [OSTI]

    Ronald Dickman; Daniel ben-Avraham

    2002-07-08T23:59:59.000Z

    We study a version of compact directed percolation (CDP) in one dimension in which occupation of a site for the first time requires that a "mine" or antiparticle be eliminated. This process is analogous to the variant of directed percolation with a long-time memory, proposed by Grassberger, Chate and Rousseau [Phys. Rev. E 55, 2488 (1997)] in order to understand spreading at a critical point involving an infinite number of absorbing configurations. The problem is equivalent to that of a pair of random walkers in the presence of movable partial reflectors. The walkers, which are unbiased, start one lattice spacing apart, and annihilate on their first contact. Each time one of the walkers tries to visit a new site, it is reflected (with probability r) back to its previous position, while the reflector is simultaneously pushed one step away from the walker. Iteration of the discrete-time evolution equation for the probability distribution yields the survival probability S(t). We find that S(t) \\sim t^{-delta}, with delta varying continuously between 1/2 and 1.160 as the reflection probability varies between 0 and 1.

  8. PARS II Training Workbook (Course 103) | Department of Energy

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

    PARS II Training Workbook (Course 103) PARS II Training Workbook (Course 103) PARS II More Documents & Publications PARS II TRAINING PARS II TRAINING PARS II 104 Contractor Monthly...

  9. Impact of HFIR LEU Conversion on Beryllium Reflector Degradation Factors

    SciTech Connect (OSTI)

    Ilas, Dan [ORNL

    2013-10-01T23:59:59.000Z

    An assessment of the impact of low enriched uranium (LEU) conversion on the factors that may cause the degradation of the beryllium reflector is performed for the High Flux Isotope Reactor (HFIR). The computational methods, models, and tools, comparisons with previous work, along with the results obtained are documented and discussed in this report. The report documents the results for the gas and neutronic poison production, and the heating in the beryllium reflector for both the highly enriched uranium (HEU) and LEU HFIR configurations, and discusses the impact that the conversion to LEU may have on these quantities. A time-averaging procedure was developed to calculate the isotopic (gas and poisons) production in reflector. The sensitivity of this approach to different approximations is gauged and documented. The results show that the gas is produced in the beryllium reflector at a total rate of 0.304 g/cycle for the HEU configuration; this rate increases by ~12% for the LEU case. The total tritium production rate in reflector is 0.098 g/cycle for the HEU core and approximately 11% higher for the LEU core. A significant increase (up to ~25%) in the neutronic poisons production in the reflector during the operation cycles is observed for the LEU core, compared to the HEU case, for regions close to the core s horizontal midplane. The poisoning level of the reflector may increase by more than two orders of magnitude during long periods of downtime. The heating rate in the reflector is estimated to be approximately 20% lower for the LEU core than for the HEU core. The decrease is due to a significantly lower contribution of the heating produced by the gamma radiation for the LEU core. Both the isotopic (gas and neutronic poisons) production and the heating rates are spatially non-uniform throughout the beryllium reflector volume. The maximum values typically occur in the removable reflector and close to the midplane.

  10. Le polyimide-alumine : un isolant performant utilis dans un aimant supraconducteur refroidi l'hlium superfluide

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1761 Le polyimide-alumine : un isolant performant utilisé dans un aimant supraconducteur refroidi à'est avéré nécessaire de développer un matériau nouveau : le polyimide-alumine. Le programme de développement to develop a new material : polyimide-alumina. The development program resulted in the achievement

  11. Method of preparing a sintered lithium aluminate structure for containing electrolyte

    DOE Patents [OSTI]

    Sim, James W. (Evergreen Park, IL); Kinoshita, Kimio (Cupertino, CA)

    1981-01-01T23:59:59.000Z

    A porous sintered tile is formed of lithium aluminate for retaining molten lectrolyte within a fuel cell. The tile is prepared by reacting lithium hydroxide in aqueous solution with alumina particles to form beta lithium aluminate particles. The slurry is evaporated to dryness and the solids dehydrated to form a beta lithium aluminate powder. The powder is compacted into the desired shape and sintered at a temperature in excess of 1200 K. but less than 1900 K. to form a porous integral structure that is subsequently filled with molten electrolyte. A tile of this type is intended for use in containing molten alkali metal carbonates as electolyte for use in a fuel cell having porous metal or metal oxide electrodes for burning a fuel gas such as hydrogen and/or carbon monoxide with an oxidant gas containing oxygen.

  12. Imaging with Spherically Bent Crystals or Reflectors

    SciTech Connect (OSTI)

    Bitter, M; Hill, K W; Scott, S; Ince-Cushman, A; Reinke, M; Podpaly, Y; Rice, J E; Beiersdorfer, P

    2010-06-01T23:59:59.000Z

    This paper consists of two parts: Part I describes the working principle of a recently developed x-ray imaging crystal spectrometer, where the astigmatism of spherically bent crystals is being used with advantage to record spatially resolved spectra of highly charged ions for Doppler measurements of the ion-temperature and toroidal plasmarotation- velocity profiles in tokamak plasmas. This type of spectrometer was thoroughly tested on NSTX and Alcator C-Mod, and its concept was recently adopted for the design of the ITER crystal spectrometers. Part II describes imaging schemes, where the astigmatism has been eliminated by the use of matched pairs of spherically bent crystals or reflectors. These imaging schemes are applicable over a wide range of the electromagnetic radiation, which includes microwaves, visible light, EUV radiation, and x-rays. Potential applications with EUV radiation and x-rays are the diagnosis of laserproduced plasmas, imaging of biological samples with synchrotron radiation, and lithography.

  13. Method of making reflecting film reflector

    DOE Patents [OSTI]

    Cottingham, James G. (Center Moriches, NY)

    1980-01-01T23:59:59.000Z

    A reflector of the reflecting film type is disclosed and which may be used in a heliostatic system for concentrating solar energy and comprising a reflecting film bonded to an appropriate rigid substrate in such a way that specularity of a very high order is achieved. A method of bonding the reflecting film to the substrate is also disclosed and comprises the steps of initially adhering the film to a smooth, clean flat rigid surface with a non-bonding liquid between the rigid surface and film, and then bonding the substrate and film. The non-bonding liquid has a molecular adhesion greater than any stresses due to handling or curing of the bonding agent which is applied between the film and the opposing surface of the rigid substrate.

  14. Lithium aluminate/zirconium material useful in the production of tritium

    DOE Patents [OSTI]

    Cawley, William E. (Richland, WA); Trapp, Turner J. (Richland, WA)

    1984-10-09T23:59:59.000Z

    A composition is described useful in the production of tritium in a nuclear eactor. Lithium aluminate particles are dispersed in a matrix of zirconium. Tritium produced by the reactor of neutrons with the lithium are absorbed by the zirconium, thereby decreasing gas pressure within capsules carrying the material.

  15. Lithium aluminate/zirconium material useful in the production of tritium

    DOE Patents [OSTI]

    Cawley, W.E.; Trapp, T.J.

    1984-10-09T23:59:59.000Z

    A composition is described useful in the production of tritium in a nuclear reactor. Lithium aluminate particles are dispersed in a matrix of zirconium. Tritium produced by the reactor of neutrons with the lithium are absorbed by the zirconium, thereby decreasing gas pressure within capsules carrying the material.

  16. Neutronic evaluation of GCFR core diluents and reflectors

    E-Print Network [OSTI]

    Yu, Kun, 1974-

    2003-01-01T23:59:59.000Z

    Materials are evaluated for use as in-core diluents and as peripheral reflectors for Gas-Cooled Fast Reactor (GFR) service, using coupled Monte Carlo (MCNP) and isotopics (ORIGEN) codes. The principal performance indices ...

  17. presentee par SOPHIE ACHARD

    E-Print Network [OSTI]

    Boyer, Edmond

    THÈSE pr´esent´ee par SOPHIE ACHARD pour obtenir le titre de docteur de L'UNIVERSITÉ JOSEPH FOURIER'ils m'ont apport´ee. De longues et enthousiastes discussions avec Gersende Fort et Pierre Lafaye de

  18. Prsent par Laurence JOUNIAUX

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .................................. 211 Caractérisation des milieux superficiels par des excitations provoquées : conversions sismo................................................................................................................................................ 307 C-1. PH�NOM�NES TRANSITOIRES SISMO-�LECTROMAGN�TIQUES............... 307 C-2. EFFET DE LA

  19. Solar cell comprising a plasmonic back reflector and method therefor

    DOE Patents [OSTI]

    Ding, I-Kang; Zhu, Jia; Cui, Yi; McGehee, Michael David

    2014-11-25T23:59:59.000Z

    A method for forming a solar cell having a plasmonic back reflector is disclosed. The method includes the formation of a nanoimprinted surface on which a metal electrode is conformally disposed. The surface structure of the nanoimprinted surface gives rise to a two-dimensional pattern of nanometer-scale features in the metal electrode enabling these features to collectively form the plasmonic back reflector.

  20. Application of the OPTEX method for computing reflector parameters

    SciTech Connect (OSTI)

    Hebert, A. [Ecole Polytechnique de Montreal, C.P. 6079 suce. Centre-Ville, Montreal QC. H3C 3A7 (Canada); Leroyer, H. [EDF - R and D, SINETICS, 1 Avenue du General de Gaulle, 92141 Clamart (France)

    2013-07-01T23:59:59.000Z

    We are investigating the OPTEX reflector model for obtaining few-group reflector parameters consistent with a reference power distribution in the core. In our study, the reference power distribution is obtained using a 142,872-region calculation defined over a 2D eighth-of-core pressurized water reactor and performed with the method of characteristics. The OPTEX method is based on generalized perturbation theory and uses an optimization algorithm known as parametric linear complementarity pivoting. The proposed model leads to few-group diffusion coefficients or P1-weighted macroscopic total cross sections that can be used to represent the reflector in full-core calculations. These few-group parameters can be spatially heterogeneous in order to correctly represent steel baffles present in modern pressurized water reactors. The optimal reflector parameters are compared to those obtained with a flux-volume weighting of the reflector cross sections recovered from the reference calculation. Important improvements in full-core power distribution are observed when the optimal parameters are used. (authors)

  1. Computer modelling of the reduction of rare earth dopants in barium aluminate

    SciTech Connect (OSTI)

    Rezende, Marcos V. dos S; Valerio, Mario E.G. [Department of Physics, Federal University of Sergipe, 49100-000 Sao Cristovao, SE (Brazil); Jackson, Robert A., E-mail: r.a.jackson@chem.keele.ac.uk [School of Physical and Geographical Sciences, Keele University, Keele, Staffordshire ST5 5BG (United Kingdom)

    2011-08-15T23:59:59.000Z

    Long lasting phosphorescence in barium aluminates can be achieved by doping with rare earth ions in divalent charge states. The rare earth ions are initially in a trivalent charge state, but are reduced to a divalent charge state before being doped into the material. In this paper, the reduction of trivalent rare earth ions in the BaAl{sub 2}O{sub 4} lattice is studied by computer simulation, with the energetics of the whole reduction and doping process being modelled by two methods, one based on single ion doping and one which allows dopant concentrations to be taken into account. A range of different reduction schemes are considered and the most energetically favourable schemes identified. - Graphical abstract: The doping and subsequent reduction of a rare earth ion into the barium aluminate lattice. Highlights: > The doping of barium aluminate with rare earth ions reduced in a range of atmospheres has been modelled. > The overall solution energy for the doping process for each ion in each reducing atmosphere is calculated using two methods. > The lowest energy reduction process is predicted and compared with experimental results.

  2. A powerful reflector in relativistic backward wave oscillator

    SciTech Connect (OSTI)

    Cao, Yibing, E-mail: caoyibing@nint.ac.cn; Sun, Jun; Teng, Yan; Zhang, Yuchuan; Zhang, Lijun; Shi, Yanchao; Ye, Hu; Chen, Changhua [Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China)

    2014-09-15T23:59:59.000Z

    An improved TM{sub 021} resonant reflector is put forward. Similarly with most of the slow wave structures used in relativistic backward wave oscillator, the section plane of the proposed reflector is designed to be trapezoidal. Compared with the rectangular TM{sub 021} resonant reflector, such a structure can depress RF breakdown more effectively by weakening the localized field convergence and realizing good electrostatic insulation. As shown in the high power microwave (HPM) generation experiments, with almost the same output power obtained by the previous structure, the improved structure can increase the pulse width from 25?ns to over 27?ns and no obvious surface damage is observed even if the generated HPM pulses exceed 1000 shots.

  3. Dual annular rotating [open quotes]windowed[close quotes] nuclear reflector reactor control system

    DOE Patents [OSTI]

    Jacox, M.G.; Drexler, R.L.; Hunt, R.N.M.; Lake, J.A.

    1994-03-29T23:59:59.000Z

    A nuclear reactor control system is provided in a nuclear reactor having a core operating in the fast neutron energy spectrum where criticality control is achieved by neutron leakage. The control system includes dual annular, rotatable reflector rings. There are two reflector rings: an inner reflector ring and an outer reflector ring. The reflectors are concentrically assembled, surround the reactor core, and each reflector ring includes a plurality of openings. The openings in each ring are capable of being aligned or non-aligned with each other. Independent driving means for each of the annular reflector rings is provided so that reactor criticality can be initiated and controlled by rotation of either reflector ring such that the extent of alignment of the openings in each ring controls the reflection of neutrons from the core. 4 figures.

  4. Steam-circuit Model for the Compact Linear Fresnel Reflector , G. L. Morrison1

    E-Print Network [OSTI]

    Steam-circuit Model for the Compact Linear Fresnel Reflector Prototype J. D. Pye1 , G. L. Morrison1.pye@student.unsw.edu.au Abstract The Compact Linear Fresnel Reflector (CLFR) is a linear-concentrating solar thermal energy system The Compact Linear Fresnel Reflector (CLFR) was first conceived of in 1992-1993 and was patented in 1995

  5. Birefringent omnidirectional reflector Kate Kaminska and Kevin Robbie

    E-Print Network [OSTI]

    Robbie, Kevin

    silica Ref. 4 multilayer structures and in the near infrared with amorphous silicon silica Ref. 5 and Ga, and expensive. We demonstrate an omnidirectional reflector operat- ing at near-infrared wavelengths, made reflection of radiation at 1.1 m for all incidence angles and polarizations. The thin-film device

  6. LED PAR38 Lamps

    Broader source: Energy.gov [DOE]

    The following CALiPER reports provide detailed analysis of LED PAR38 lamp performance, covering basic performance characteristics as well as subjective evaluation of beam, shadow, and color quality. Pending reports will offer analysis on flicker, dimming and power quality characteristics; stress testing; and lumen and chromaticity maintenance. These reports are intended to educate the industry on market trends, potential issues, and important areas for improvement.

  7. Methods of use of calcium hexa aluminate refractory linings and/or chemical barriers in high alkali or alkaline environments

    DOE Patents [OSTI]

    McGowan, Kenneth A; Cullen, Robert M; Keiser, James R; Hemrick, James G; Meisner, Roberta A

    2013-10-22T23:59:59.000Z

    A method for improving the insulating character/and or penetration resistance of a liner in contact with at least one of an alkali and/or alkaline environments is provided. The method comprises lining a surface that is subject to wear by an alkali environment and/or an alkaline environment with a refractory composition comprising a refractory aggregate consisting essentially of a calcium hexa aluminate clinker having the formula CA.sub.6, wherein C is equal to calcium oxide, wherein A is equal to aluminum oxide, and wherein the hexa aluminate clinker has from zero to less than about fifty weight percent C.sub.12A.sub.7, and wherein greater than 98 weight percent of the calcium hexa aluminate clinker having a particle size ranging from -20 microns to +3 millimeters, for forming a liner of the surface. This method improves the insulating character/and or penetration resistance of the liner.

  8. Integrand and Performance Analysis with ParInt/ParVis

    E-Print Network [OSTI]

    de Doncker, Elise

    , USA E-mail: felise,rrzanny,kkaugars,lcucosg@cs.wmich.edu Abstract We present a survey of the contents://www.cs.wmich.edu/parint. This paper presents integrand analysis results obtained with ParInt1.1 and ParVis. It gives a survey ACR-0000442, EIA-0130857, ACI-0203776 Preprint submitted to Elsevier Science 11 October 2002 #12

  9. prsente par Jean-Christophe PASSELERGUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Quadratique per unit - par unité Power System Stabilizer - Stabilisateur de puissance Réactance Commandée par Alternative Current Transmission System - Système de Transmission Flexible à Courant Alternatif High Voltage

  10. Thermochemical properties of gibbsite, bayerite, boehmite, diaspore, and the aluminate ion between 0 and 350/degree/C

    SciTech Connect (OSTI)

    Apps, J.A.; Neil, J.M.; Jun, C.H.

    1989-01-01T23:59:59.000Z

    A requirement for modelling the chemical behavior of groundwater in a nuclear waste repository is accurate thermodynamic data pertaining to the participating minerals and aqueous species. In particular, it is important that the thermodynamic properties of the aluminate ion be accurately determined, because most rock forming minerals in the earth's crust are aluminosilicates, and most groundwaters are neutral to slightly alkaline, where the aluminate ion is the predominant aluminum species in solution. Without a precise knowledge of the thermodynamic properties of the aluminate ion aluminosilicate mineral solubilities cannot be determined. The thermochemical properties of the aluminate ion have been determined from the solubilities of the aluminum hydroxides and oxyhydroxides in alkaline solutions between 20 and 350/degree/C. An internally consistent set of thermodynamic properties have been determined for gibbsite, boehmite, diaspore and corundum. The thermodynamic properties of bayerite have been provisionally estimated and a preliminary value for ..delta..G/sub f, 298//sup 0/ of nordstrandite has been determined. 205 refs., 17 figs., 25 tabs.

  11. Magnesium aluminate (MgAl2O4) spinel produced via self-heat-sustained (SHS) technique

    E-Print Network [OSTI]

    Azad, Abdul-Majeed

    , conventional solid-state-reaction (SSR), sol-gel, spray drying (atomization) and organic gel-assisted citrateMagnesium aluminate (MgAl2O4) spinel produced via self-heat-sustained (SHS) technique Lim Rooi Pinga,1 , Abdul-Majeed Azadb, *, Teng Wan Dunga a Ceramics Technology Center, SIRIM Berhad, 1 Persiaran

  12. Project Profile: Low-Cost Self-Cleaning Reflector Coatings for...

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

    for CSP Collectors Project Profile: Low-Cost Self-Cleaning Reflector Coatings for CSP Collectors Oak Ridge National Laboratory logo The Oak Ridge National Laboratory (ORNL),...

  13. Development of MnCoO Coating with New Aluminizing Process for Planar SOFC Stacks

    SciTech Connect (OSTI)

    Choi, Jung-Pyung; Weil, K. Scott; Chou, Y. S.; Stevenson, Jeffry W.; Yang, Zhenguo

    2011-03-22T23:59:59.000Z

    Low-cost, chromia-forming steels find widespread use in SOFCs at operating temperatures below 800°C, because of their low thermal expansion mismatch and low cost. However, volatile Cr-containing species originating from this scale poison the cathode material in the cells and subsequently cause power degradation in the devices. To prevent this, a conductive manganese cobaltite coating has been developed. However, this coating is not compatible with forming hermetic seals between the interconnect or window frame component and ceramic cell. This coating reacts with sealing materials. Thus, a new aluminizing process has been developed for the sealing regions in these parts, as well as for other metallic stack and balance-of-plant components. From this development, the sealing performance and SOFC stack performance became very stable.

  14. Optical device with low electrical and thermal resistance bragg reflectors

    DOE Patents [OSTI]

    Lear, Kevin L. (Albuquerque, NM)

    1996-01-01T23:59:59.000Z

    A compound-semiconductor optical device and method. The optical device is provided with one or more asymmetrically-graded heterojunctions between compound semiconductor layers for forming a distributed Bragg reflector mirror having an improved electrical and thermal resistance. Efficient light-emitting devices such as light-emitting diodes, resonant-cavity light-emitting diodes, and vertical-cavity surface-emitting lasers may be formed according to the present invention, which may be applied to the formation of resonant-cavity photodetectors.

  15. Optical device with low electrical and thermal resistance Bragg reflectors

    DOE Patents [OSTI]

    Lear, K.L.

    1996-10-22T23:59:59.000Z

    A compound-semiconductor optical device and method are disclosed. The optical device is provided with one or more asymmetrically-graded heterojunctions between compound semiconductor layers for forming a distributed Bragg reflector mirror having an improved electrical and thermal resistance. Efficient light-emitting devices such as light-emitting diodes, resonant-cavity light-emitting diodes, and vertical-cavity surface-emitting lasers may be formed according to the present invention, which may be applied to the formation of resonant-cavity photodetectors. 16 figs.

  16. High temperature oxidation and NaCl-induced accelerated corrosion of hot-dip aluminized 9Cr-1Mo and 310 stainless steel 

    E-Print Network [OSTI]

    Tsaur, Charng-Cheng

    2005-02-17T23:59:59.000Z

    The behaviors of high temperature corrosion on hot-dip aluminized on 9Cr-1Mo and 310 stainless steels when catalyzed by NaCl and cyclic heating environment were studied experimentally. The corrosion behavior and morphological ...

  17. Reflector for efficient coupling of a laser beam to air or other fluids

    DOE Patents [OSTI]

    Kare, Jordin T. (Pleasanton, CA)

    1992-01-01T23:59:59.000Z

    A reflector array is disclosed herein that provides a controlled region or regions of plasma breakdowns from a laser beam produced at a remotely-based laser source. The plasma may be applied to produce thrust to propel a spacecraft, or to diagnose a laser beam, or to produce shockwaves. The spacecraft propulsion system comprises a reflector array attached to the vehicle. The reflector array comprises a plurality of reflectors spaced apart on a reflective surface, with each reflector acting as an independent focusing mirror. The reflectors are spaced closely together to form a continuous or partially-continuous surface. The reflector array may be formed from a sheet of reflective material, such as copper or aluminum. In operation, a beam of electromagnetic energy, such as a laser beam, is directed at the reflectors which focus the reflected electromagnetic energy at a plurality of regions off the surface. The energy concentrated in the focal region causes a breakdown of the air or other fluid in the focal region, creating a plasma. Electromagnetic energy is absorbed in the plasma and it grows in volume, compressing and heating the adjacent fluid thereby providing thrust. Laser pulses may be applied repetitively. After each such thrust pulse, fresh air can be introduced next to the surface either laterally, or through a perforated surface. If air or some other gas or vapor is supplied, for example from a tank carried on board a vehicle, this invention may also be used to provide thrust in a vacuum environment.

  18. Reflector for efficient coupling of a laser beam to air or other fluids

    DOE Patents [OSTI]

    Kare, J.T.

    1992-10-06T23:59:59.000Z

    A reflector array is disclosed herein that provides a controlled region or regions of plasma breakdowns from a laser beam produced at a remotely-based laser source. The plasma may be applied to produce thrust to propel a spacecraft, or to diagnose a laser beam, or to produce shock waves. The spacecraft propulsion system comprises a reflector array attached to the vehicle. The reflector array comprises a plurality of reflectors spaced apart on a reflective surface, with each reflector acting as an independent focusing mirror. The reflectors are spaced closely together to form a continuous or partially-continuous surface. The reflector array may be formed from a sheet of reflective material, such as copper or aluminum. In operation, a beam of electromagnetic energy, such as a laser beam, is directed at the reflectors which focus the reflected electromagnetic energy at a plurality of regions off the surface. The energy concentrated in the focal region causes a breakdown of the air or other fluid in the focal region, creating a plasma. Electromagnetic energy is absorbed in the plasma and it grows in volume, compressing and heating the adjacent fluid thereby providing thrust. Laser pulses may be applied repetitively. After each such thrust pulse, fresh air can be introduced next to the surface either laterally, or through a perforated surface. If air or some other gas or vapor is supplied, for example from a tank carried on board a vehicle, this invention may also be used to provide thrust in a vacuum environment. 10 figs.

  19. DISSERTATION ELECTRON-REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION ELECTRON-REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS Submitted by Kuo-Jui Hsiao ELECTRON- REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS-FILM SOLAR CELLS The CdTe thin-film solar cell has a large absorption coefficient and high theoretical

  20. What is a seismic reflector like? Nathalie Favretto-Cristini1

    E-Print Network [OSTI]

    Boyer, Edmond

    What is a seismic reflector like? Nathalie Favretto-Cristini1 , Paul Cristini1 , and Eric de of reflectors from a seismic viewpoint. This region is repre- sented by a volume of integration of medium and syncline type. The maximum vertical extent might be larger than the seismic wavelengths for subcritical

  1. Advanced Manufacture of Second-Surface, Silvered Glass Reflectors for High-Performance, Low-Cost CSP Collector Systems

    Broader source: Energy.gov [DOE]

    Advanced Manufacture of Second-Surface, Silvered Glass Reflectors for High-Performance, Low-Cost CSP Collector Systems

  2. Proposed Data Elements for PARS II Web Application | Department...

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

    Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application More Documents &...

  3. BLENDED CALCIUM ALUMINATE-CALCIUM SULFATE CEMENT-BASED GROUT FOR P-REACTOR VESSEL IN-SITU DECOMMISSIONING

    SciTech Connect (OSTI)

    Langton, C.; Stefanko, D.

    2011-03-10T23:59:59.000Z

    The objective of this report is to document laboratory testing of blended calcium aluminate - calcium hemihydrate grouts for P-Reactor vessel in-situ decommissioning. Blended calcium aluminate - calcium hemihydrate cement-based grout was identified as candidate material for filling (physically stabilizing) the 105-P Reactor vessel (RV) because it is less alkaline than portland cement-based grout which has a pH greater than 12.4. In addition, blended calcium aluminate - calcium hemihydrate cement compositions can be formulated such that the primary cementitious phase is a stable crystalline material. A less alkaline material (pH {<=} 10.5) was desired to address a potential materials compatibility issue caused by corrosion of aluminum metal in highly alkaline environments such as that encountered in portland cement grouts [Wiersma, 2009a and b, Wiersma, 2010, and Serrato and Langton, 2010]. Information concerning access points into the P-Reactor vessel and amount of aluminum metal in the vessel is provided elsewhere [Griffin, 2010, Stefanko, 2009 and Wiersma, 2009 and 2010, Bobbitt, 2010, respectively]. Radiolysis calculations are also provided in a separate document [Reyes-Jimenez, 2010].

  4. Distributed bragg reflector using AIGaN/GaN

    DOE Patents [OSTI]

    Waldrip, Karen E.; Lee, Stephen R.; Han, Jung

    2004-08-10T23:59:59.000Z

    A supported distributed Bragg reflector or superlattice structure formed from a substrate, a nucleation layer deposited on the substrate, and an interlayer deposited on the nucleation layer, followed by deposition of (Al,Ga,B)N layers or multiple pairs of (Al,Ga,B)N/(Al,Ga,B)N layers, where the interlayer is a material selected from AlN, Al.sub.x Ga.sub.1-x N, and AlBN with a thickness of approximately 20 to 1000 angstroms. The interlayer functions to reduce or eliminate the initial tensile growth stress, thereby reducing cracking in the structure. Multiple interlayers utilized in an AlGaN/GaN DBR structure can eliminate cracking and produce a structure with a reflectivity value greater than 0.99.

  5. CHALEUR D'ADSORPTION DES GAZ PAR LE CHARBON A BASSE TEMPERATURE (-183) Par REN LEPOINTE.

    E-Print Network [OSTI]

    Boyer, Edmond

    CHALEUR D'ADSORPTION DES GAZ PAR LE CHARBON A BASSE TEMPERATURE (- 183°) Par RENÉ LEPOINTE. Elève au début de l'adsorption que par la suite. L'hydrogène donne un phénomène thermique. Introduction. - De très nombreuses recherches ont été faites sur l'adsorption des gaz par le charbon de bois

  6. ~d'ordre: 164id prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    de propagation des pollutions par hydrocarbures en milieu souterrain - application au milieu alluvial des pollutions par hydrocarbures en milieu souterrain - application au milieu alluvial Soutenue le 14 pollutions accidentelles par hydrocarbures. Cetté méthodologie s'appuie sur l'intégra- tion d'outils de

  7. Par Pond Fish, Water, and Sediment Chemistry

    SciTech Connect (OSTI)

    Paller, M.H. [Westinghouse Savannah River Company, AIKEN, SC (United States); Wike, L.D.

    1996-06-01T23:59:59.000Z

    The objectives of this report are to describe the Par Pond fish community and the impact of the drawdown and refill on the community, describe contaminant levels in Par Pond fish, sediments, and water and indicate how contaminant concentrations and distributions were affected by the drawdown and refill, and predict possible effects of future water level fluctuations in Par Pond.

  8. Design and fabrication of highly efficient electrooptic modulators using bragg grating reflectors

    E-Print Network [OSTI]

    Kim, Ryoung-Han

    2006-04-12T23:59:59.000Z

    -directional coupling that includes an attenuation coefficient. The Bragg grating spectral characteristics are exploited to fabricate distributed Bragg feedback modulators (DBFM) and Bragg reflector Fabry-Perot modulators (BFPM). The sharp cut-off in transmission...

  9. Photodetector with absorbing region having resonant periodic absorption between reflectors

    DOE Patents [OSTI]

    Bryan, R.P.; Olbright, G.R.; Brennan, T.M.; Tsao, J.Y.

    1995-02-14T23:59:59.000Z

    A photodetector is disclosed that is responsive to a wavelength or wavelengths of interest which have heretofore been unrealized. The photodetector includes a resonant cavity structure bounded by first and second reflectors, the resonant cavity structure being resonant at the wavelength or wavelengths of interest for containing a plurality of standing waves therein. The photodetector further includes a radiation absorbing region disposed within the resonant cavity structure, the radiation absorbing region including a plurality of radiation absorbing layers spaced apart from one another by a distance substantially equal to a distance between antinodes of adjacent ones of the standing waves. Each of radiation absorbing layers is spatially positioned at a location of one of the antinodes of one of the standing waves such that radiation absorption is enhanced. The radiation absorbing layers may be either bulk layers or quantum wells includes a plurality of layers, each of which is comprised of a strained layer of InGaAs. Individual ones of the InGaAs layers are spaced apart from one another by a GaAs barrier layer. 11 figs.

  10. Midtemperature solar systems test facility predictions for thermal performance of the Acurex solar collector with FEK 244 reflector surface

    SciTech Connect (OSTI)

    Harrison, T.D.

    1981-01-01T23:59:59.000Z

    Thermal performance predictions are presented for the Acurex solar collector, with FEK 244 reflector surface, for three output temperatures at five cities in the United States.

  11. Heavy reflector experiments in the IPEN/MB-01 reactor: Stainless steel, carbon steel and nickel

    SciTech Connect (OSTI)

    Santos, Adimir dos; Andrade e Silva, Graciete Simoes de; Jerez, Rogerio; Liambos Mura, Luis Felipe; Fuga, Rinaldo [Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP Av. Prof. Lineu Prestes 2242 - CEP 05508-000 Sao Paulo, SP (Brazil)

    2013-05-06T23:59:59.000Z

    New experiments devoted to the measurements of physical parameters of a light water core surrounded by a heavy reflector were performed in the IPEN/MB-01 research reactor facility. These experiments comprise three sets of heavy reflector (SS-304, Carbon Steel, and Nickel) in a form of laminates around 3 mm thick. Each set was introduced individually in the west face of the core of the IPEN/MB-01 reactor. The aim here is to provide high quality experimental data for the interpretation and validation of the SS-304 heavy reflector calculation methods. The experiments of Carbon Steel, which is composed mainly of iron, and Nickel were performed to provide a consistent and an interpretative check for the SS-304 reflector experiment. The experimental results comprise critical control bank positions, temperatures and reactivities as a function of the number of the plates. Particularly to the case of Nickel, the experimental data are unique of its kind. The theoretical analysis was performed by MCNP-5 with the nuclear data library ENDF/B-VII.0. It was shown that this nuclear data library has a very good performance up to thirteen plates and overestimates the reactivity for higher number of plates independently of the type of the reflector.

  12. High-pressure sound velocities and elasticity of aluminous MgSiO3 perovskite to 45 GPa: Implications for lateral heterogeneity in Earth's

    E-Print Network [OSTI]

    Jackson, Jennifer M.

    High-pressure sound velocities and elasticity of aluminous MgSiO3 perovskite to 45 GPa lateral variations of seismic wave speeds in Earth's lower mantle are due at least in part to a chemical, J. M., J. Zhang, J. Shu, S. V. Sinogeikin, and J. D. Bass (2005), High-pressure sound velocities

  13. PARS II Data Quality Memorandum from Deputy Secretary Poneman...

    Office of Environmental Management (EM)

    PARS II Data Quality Memorandum from Deputy Secretary Poneman (June 19, 2012) PARS II Data Quality Memorandum from Deputy Secretary Poneman (June 19, 2012) PARS II Data Quality.pdf...

  14. avec modifications par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  15. amelioration par aromatherapie: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  16. aromatiques par impact: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  17. aqueuse par dynamique: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  18. analyse par spectrometrie: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  19. activity recall par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  20. aromatiques par spectrometrie: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  1. alimentation par convertisseurs: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  2. atomiques lies par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  3. analyse par activation: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  4. accords conclus par: Topics by E-print Network

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    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  5. analyse par chromatographie: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  6. assistee par ordinateur: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  7. aerosol anthropogenique par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  8. au traitement par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  9. approche par homogeneisation: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  10. assistee par complexation: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  11. accumulator ring par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  12. absolu par diffraction: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  13. acceleration ionique par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  14. action research par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  15. atmospherique par scintillation: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  16. automatique par tout: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  17. activees par analyse: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  18. approche conceptuelle par: Topics by E-print Network

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    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  19. anneaux par imagerie: Topics by E-print Network

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    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  20. autocatalytic recombiner par: Topics by E-print Network

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    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  1. apres traitement par: Topics by E-print Network

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    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  2. analyse instrumentale par: Topics by E-print Network

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    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  3. atopoietique induit par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  4. Long-range, full-duplex, modulated-reflector cell phone for voice/data transmission

    DOE Patents [OSTI]

    Neagley, Daniel L. (Albuquerque, NM); Briles, Scott D. (Los Alamos, NM); Coates, Don M. (Santa Fe, NM); Freund, Samuel M. (Los Alamos, NM)

    2002-01-01T23:59:59.000Z

    A long-range communications apparatus utilizing modulated-reflector technology is described. The apparatus includes an energy-transmitting base station and remote units that do not emit radiation in order to communicate with the base station since modulated-reflector technology is used whereby information is attached to an RF carrier wave originating from the base station which is reflected by the remote unit back to the base station. Since the remote unit does not emit radiation, only a low-power power source is required for its operation. Information from the base station is transmitted to the remote unit using a transmitter and receiver, respectively. The range of such a communications system is determined by the properties of a modulated-reflector half-duplex link.

  5. Wafer-Bonded Internal Back-Surface Reflectors for Enhanced TPV Performance

    SciTech Connect (OSTI)

    C.A. Wang; P.G. Murphy; P.W. O'Brien; D.A. Shiau; A.C. Anderson; Z.L. Liau; D.M. Depoy; G. Nichols

    2002-08-12T23:59:59.000Z

    This paper discusses recent efforts to realize GaInAsSb/GaSb TPV cells with an internal back-surface reflector (BSR). The cells are fabricated by wafer bonding the GaInAsSb/GaSb device layers to GaAs substrates with a dielectric/Au reflector, and subsequently removing the GaSb substrate. The internal BSR enhances optical absorption within the device while the dielectric layer provides electrical isolation. This approach is compatible with monolithic integration of series-connected TPV cells and can mitigate the requirements of filters used for front-surface spectral control.

  6. Performance improvements of symmetry-breaking reflector structures in nonimaging devices

    DOE Patents [OSTI]

    Winston, Roland

    2004-01-13T23:59:59.000Z

    A structure and method for providing a broken symmetry reflector structure for a solar concentrator device. The component of the optical direction vector along the symmetry axis is conserved for all rays propagated through a translationally symmetric optical device. This quantity, referred to as the translational skew invariant, is conserved in rotationally symmetric optical systems. Performance limits for translationally symmetric nonimaging optical devices are derived from the distributions of the translational skew invariant for the optical source and for the target to which flux is to be transferred. A numerically optimized non-tracking solar concentrator utilizing symmetry-breaking reflector structures can overcome the performance limits associated with translational symmetry.

  7. Surface studies on aluminized and thermally oxidized superalloy 690 substrates interacted with simulated nuclear waste and sodium borosilicate melt

    SciTech Connect (OSTI)

    Yusufali, C., E-mail: yusuf@barc.gov.in; Sengupta, P.; Dutta, R. S.; Dey, G. K. [Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India); Kshirsagar, R. J. [High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India); Mishra, R. K.; Kaushik, C. P. [Waste Management Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085 (India)

    2014-04-24T23:59:59.000Z

    Aluminized and thermally oxidized Ni-Cr-Fe based superalloy 690 substrates with Al{sub 2}O{sub 3} layer on top have been exposed in nitrate based environment (simulated high level nuclear liquid waste) at 373 K for 216 hours and sodium borosilicate melt at 1248 K for 192 hours. The surfaces of exposed samples have been characterized by using Electron probe micro-analyzer (EPMA). Elemental X-ray mapping on coated specimen that exposed in simulated nuclear waste solution revealed that the surface is enriched with Ni, Cr and Al. X-ray mapping on surface of the specimen that interacted with sodium borosilicate melt indicated that the surface is composed of Al, Fe, Ni and Cr.

  8. An Advanced Computational Scheme for the Optimization of 2D Radial Reflectors in Pressurized Water Reactors

    E-Print Network [OSTI]

    Thomas Clerc; Alain Hébert; Hadrien Leroyer; Jean-Philippe Argaud; Bertrand Bouriquet; Agélique Ponçot

    2014-05-12T23:59:59.000Z

    This paper presents a computational scheme for the determination of equivalent 2D multi-group heterogeneous reflectors in a Pressurized Water Reactor (PWR). The proposed strategy is to define a full-core calculation consistent with a reference lattice code calculation such as the Method Of Characteristics (MOC) as implemented in APOLLO2 lattice code. The computational scheme presented here relies on the data assimilation module known as "Assimilation de donn\\'{e}es et Aide \\`{a} l'Optimisation (ADAO)" of the SALOME platform developed at \\'{E}lectricit\\'{e} De France (EDF), coupled with the full-core code COCAGNE and with the lattice code APOLLO2. A first validation of the computational scheme is made using the OPTEX reflector model developed at \\'{E}cole Polytechnique de Montr\\'{e}al (EPM). As a result, we obtain 2D multi-group, spatially heterogeneous 2D reflectors, using both diffusion or $\\text{SP}_{\\text{N}}$ operators. We observe important improvements of the power discrepancies distribution over the core when using reflectors computed with the proposed computational scheme, and the $\\text{SP}_{\\text{N}}$ operator enables additional improvements.

  9. A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR

    E-Print Network [OSTI]

    A SOLAR STILL AUGMENTED WITH A FLAT-PLATE COLLECTOR AND A REFLECTOR A. Saleh A. Badran Mechanical ­ Jordan Amman ­ Jordan e-mail: asaleh@philadelphia.edu.jo e-mail: badran@ju.edu.jo ABSTRACT A solar distillation system was built and tested to study the effect of increasing the solar radiation incident

  10. DESIGN AND TESTING FOR NOVEL JOINT FOR WAVE REFLECTORS James Tedd1

    E-Print Network [OSTI]

    tests. This is a steel bar reinforced concrete tank with the dimensions 15.7 m long, 8.5 m wide and 1DESIGN AND TESTING FOR NOVEL JOINT FOR WAVE REFLECTORS James Tedd1 , Erik Friis-Madsen2 , and Peter of the Wave Dragon has begun. This paper describes the design and testing process behind this. Tests conducted

  11. Deployable Tensegrity Reflectors for Small Satellites1 A.G. Tibert2 and S. Pellegrino3

    E-Print Network [OSTI]

    Pellegrino, Sergio

    of Cambridge, Trumpington Street, Cambridge, CB2 1PZ, U.K. Abstract Future small satellite missions require low-cost, precision reflector structures with large aperture that can be packaged in a small envelope. Existing that deploys two identical cable nets (front and rear nets) interconnected by tension ties; the reflecting mesh

  12. Reflector modelling of small high leakage cores making use of multi-group nodal equivalence theory

    SciTech Connect (OSTI)

    Theron, S. A. [South African Nuclear Energy Corporation (Necsa), PO Box 582, Pretoria, 0001 (South Africa); Reitsma, F. [Calvera Consultants, PO Box 150, Strubensvallei, 1735 (South Africa)

    2012-07-01T23:59:59.000Z

    This research focuses on modelling reflectors in typical material testing reactors (MTRs). Equivalence theory is used to homogenise and collapse detailed transport solutions to generate equivalent nodal parameters and albedo boundary conditions for reflectors, for subsequent use in full core nodal diffusion codes. This approach to reflector modelling has been shown to be accurate for two-group large commercial light water reactor (LWR) analysis, but has not been investigated for MTRs. MTRs are smaller, with much larger leakage, environment sensitivity and multi-group spectrum dependencies than LWRs. This study aims to determine if this approach to reflector modelling is an accurate and plausible homogenisation technique for the modelling of small MTR cores. The successful implementation will result in simplified core models, better accuracy and improved efficiency of computer simulations. Codes used in this study include SCALE 6.1, OSCAR-4 and EQUIVA (the last two codes are developed and used at Necsa). The results show a five times reduction in calculational time for the proposed reduced reactor model compared to the traditional explicit model. The calculated equivalent parameters however show some sensitivity to the environment used to generate them. Differences in the results compared to the current explicit model, require more careful investigation including comparisons with a reference result, before its implementation can be recommended. (authors)

  13. Comparison of fixed asymmetrical and symmetrical reflectors for evacuated tube solar receivers

    SciTech Connect (OSTI)

    Mills, D.R.; Monger, A. (Univ. of Sydney (Australia)); Morrison, G.L. (Univ. of New South Wales, Sydney (Australia))

    1994-07-01T23:59:59.000Z

    A computer simulation of the relative performance of certain truncated symmetrical and asymmetrical fixed reflector designs for solar energy collection was performed. The comparison was on the basis of annual energy delivered to a circular cylindrical evacuated tube receiver per unit of mirror area, but seasonal load information was also included to determine possible seasonal load matching advantages of one type of collector over another when storage is employed. Circumsolar radiation models based on recent correlations in the literature was included. Major conclusions were that: (1) Annual solar fractions of between 80% and 95% seem to be feasible with a load matching collector used with moderate energy storage, with 80-90% being a likely optimum; (2) CPC reflectors always gave the best annual output performance per unit of mirror area, and the lowest receiver area for situations of constant annual load, regardless of whether the storage is included in the system; (3) Asymmetrical concentrator are more cost-effective for strongly seasonally asymmetrical load patterns; (4) Fixed parabolic systems required much more receiver area than the symmetrical CPC and asymmetrical system investigated; (5) Concentration levels utilizable in fixed systems are higher than previously supposed, with 3.5:1 in an asymmetrical reflector being optimal or nearly optimal for the domestic load pattern used in the study; (6) Using a load matched reflector, the amount of storage required to achieve solar fractions of total thermal energy (space heating, water heating, clothes drying) above 90% in a residence appears to be much lower than previously thought.

  14. Analysis of large reflector antennas using CSP fringe formulation and higher-order diffraction

    E-Print Network [OSTI]

    Nehorai, Arye

    Analysis of large reflector antennas using CSP fringe formulation and higher-order diffraction- tric conductor (PEC) objects when illuminated by a Complex Source Points (CSP) beam expansion (S of a CSP-expansion illumination. In this work we discuss an application of the CSP fringe formulation

  15. Design and fabrication of highly efficient electrooptic modulators using bragg grating reflectors 

    E-Print Network [OSTI]

    Kim, Ryoung-Han

    2006-04-12T23:59:59.000Z

    Bragg grating reflectors etched in amorphous silicon overlay films have been integrated with Ti:LiNbO3 optical waveguides. With a 12.5 mm long grating segment and an etch depth of ~ 93 nm in a 105 nm-thick silicon film, a narrow (0.05 nm) spectral...

  16. Photovoltaic generator with a spherical imaging lens for use with a paraboloidal solar reflector

    DOE Patents [OSTI]

    Angel, Roger P

    2013-01-08T23:59:59.000Z

    The invention is a generator for photovoltaic conversion of concentrated sunlight into electricity. A generator according to the invention incorporates a plurality of photovoltaic cells and is intended for operation near the focus of a large paraboloidal reflector pointed at the sun. Within the generator, the entering concentrated light is relayed by secondary optics to the cells arranged in a compact, concave array. The light is delivered to the cells at high concentration, consistent with high photovoltaic conversion efficiency and low cell cost per unit power output. Light enters the generator, preferably first through a sealing window, and passes through a field lens, preferably in the form of a full sphere or ball lens centered on the paraboloid focus. This lens forms a concentric, concave and wide-angle image of the primary reflector, where the intensity of the concentrated light is stabilized against changes in the position of concentrated light entering the generator. Receiving the stabilized light are flat photovoltaic cells made in different shapes and sizes and configured in a concave array corresponding to the concave image of a given primary reflector. Photovoltaic cells in a generator are also sized and interconnected so as to provide a single electrical output that remains high and stable, despite aberrations in the light delivered to the generator caused by, for example, mispointing or bending of the primary reflector. In some embodiments, the cells are set back from the image formed by the ball lens, and part of the light is reflected onto each cell small secondary reflectors in the form of mirrors set around its perimeter.

  17. Simulink/PARS Integration Support

    SciTech Connect (OSTI)

    Vacaliuc, B. [ORNL] [ORNL; Nakhaee, N. [Sundance DSP, Inc.] [Sundance DSP, Inc.

    2013-12-18T23:59:59.000Z

    The state of the art for signal processor hardware has far out-paced the development tools for placing applications on that hardware. In addition, signal processors are available in a variety of architectures, each uniquely capable of handling specific types of signal processing efficiently. With these processors becoming smaller and demanding less power, it has become possible to group multiple processors, a heterogeneous set of processors, into single systems. Different portions of the desired problem set can be assigned to different processor types as appropriate. As software development tools do not keep pace with these processors, especially when multiple processors of different types are used, a method is needed to enable software code portability among multiple processors and multiple types of processors along with their respective software environments. Sundance DSP, Inc. has developed a software toolkit called “PARS”, whose objective is to provide a framework that uses suites of tools provided by different vendors, along with modeling tools and a real time operating system, to build an application that spans different processor types. The software language used to express the behavior of the system is a very high level modeling language, “Simulink”, a MathWorks product. ORNL has used this toolkit to effectively implement several deliverables. This CRADA describes this collaboration between ORNL and Sundance DSP, Inc.

  18. MAGNETIC STRUCTURE. ETUDE PAR EFFET MOSSBAUER

    E-Print Network [OSTI]

    Boyer, Edmond

    MAGNETIC STRUCTURE. ETUDE PAR EFFET MOSSBAUER DE QUELQUES PEROVSKITES D'YTTERBIUM P. BONVILLE, F effet Mossbauer sur 170Ybles perovskitesYbM03 (M = Fe, Cr, V) et YA103dopee en 170Yb, et par effet Mossbauer sur s7Fe, YbCr03 et YbVO3 dopees en 5 7Fe. La fonction d'onde fondamentalede Yb,+ dans YAlO et Yb

  19. N attribu par la bibliothque prsente

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Signal présentée et soutenue publiquement par Héctor-Moisés VALDES-GONZALEZ Ingénieur électricien et MSc GENTIL Président M. Jean-Luc GOUZE Rapporteur M. José RAGOT Rapporteur M. Jean-Marie FLAUS Directeur de thèse M. Lionel BOILLEREAUX Examinateur M. Gonzalo ACU�A Examinateur Thèse préparée au sein de l

  20. Comptes Rendus des JNC 17 -Poitiers 2011 Simulation par lments finis des procds par infusion de rsine

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Comptes Rendus des JNC 17 - Poitiers 2011 Simulation par éléments finis des procédés par infusion de résine Finite Simulation of the liquid infusion processes G. Pacquaut, J. Bruchon, N. Moulin, S permettant de simuler par éléments finis les procé- dés par infusion de résine au travers de renforts fibreux

  1. Optimisation de procds de BIOdpollution des eaux souterraines contamines par des hydrocarbures par un monitoring

    E-Print Network [OSTI]

    Demouchy, Sylvie

    Optimisation de procédés de BIOdépollution des eaux souterraines contaminées par des hydrocarbures contaminés par des hydrocarbures. Ces outils doivent apporter des informations manquantes aux procédés de biodégradation aérobie d'hydrocarbures. Dans un second temps ces outils seront mis en oeuvre sur un site

  2. CONTRIBUTION A L'TUDE DES SOLUTIONS DE GAZ PAR SPECTROGRAPHIE INFRAROUGE Par Mlle G. PAILLARD.

    E-Print Network [OSTI]

    Boyer, Edmond

    disparaît en solution; il y a donc empêchement de la rotation par interactions moléculaires; 2° les ba ndes atmosphé- rique) à l'état de solution se traduisant par une augmentation des interactions moléculaires Perkin-Elmer : un spectrographe simple faisceau à prisme de fluorure de lithium dans la région 2 5oo-6 50

  3. The development of large area saturable Bragg reflectors for the generation of widely-tunable ultra-short pulses

    E-Print Network [OSTI]

    Nabanja, Sheila P

    2012-01-01T23:59:59.000Z

    This thesis focuses on the realization of two photonic devices; 1) semiconductor lasers and 2) large area broadband Saturable Bragg Reflectors (SBRs). Semiconductor lasers explore the use of 3D and 2D quantum confinement ...

  4. Solar receiver heliostat reflector having a linear drive and position information system

    DOE Patents [OSTI]

    Horton, Richard H. (Schenectady, NY)

    1980-01-01T23:59:59.000Z

    A heliostat for a solar receiver system comprises an improved drive and control system for the heliostat reflector assembly. The heliostat reflector assembly is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e., heat receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The improved drive system includes linear stepping motors which comprise low weight, low cost, electronic pulse driven components. One embodiment comprises linear stepping motors controlled by a programmed, electronic microprocessor. Another embodiment comprises a tape driven system controlled by a position control magnetic tape.

  5. The effect of the host composition on the lifetime decay properties of barium/strontium aluminates compounds

    SciTech Connect (OSTI)

    Rezende, Marcos V. dos S., E-mail: mvsrezende@gmail.com [Departamento de Física, Universidade Federal de Sergipe, 49500-000 Itabaiana, SE (Brazil); Andrade, A. B.; Valerio, Mário E. G. [Departamento de Física, Universidade Federal de Sergipe, 49100-000 São Cristóvão, SE (Brazil); Montes, Paulo J. R [Instituto Federal de Sergipe, 49400-000 Lagarto, SE (Brazil)

    2014-03-14T23:59:59.000Z

    This paper reports the influence of the structural change on the luminescence of Eu-doped barium/strontium aluminates when excited with monochromatic X-rays (also known as X-ray excited optical luminescence—XEOL). Ba{sub 1?x}Sr{sub x}Al{sub 2}O{sub 4} samples, with 0?

  6. Advanced ultraviolet-resistant silver mirrors for use in solar reflectors

    DOE Patents [OSTI]

    Jorgensen, Gary J. (Pine, CO); Gee, Randy (Arvada, CO)

    2009-11-03T23:59:59.000Z

    A silver mirror construction that maintains a high percentage of hemispherical reflectance throughout the UV and visible spectrum when used in solar reflectors, comprising:a) a pressure sensitive adhesive layer positioned beneath a silver overlay;b) a polymer film disposed on the silver overlay;c) an adhesive layer positioned on the polymer film; andd) a UV screening acrylic film disposed on the adhesive layer.

  7. Transpolarising Trihedral Corner Reflector Characterisation Using a GB-SAR System

    E-Print Network [OSTI]

    Ferrer, Pere J; Aguasca, Albert; Pipia, Luca; Gonzalez-Arbesu, Jose M; Fabregas, Xavier; Romeu, Jordi

    2011-01-01T23:59:59.000Z

    The use of a low profile, light weight and easy to fabricate transpolarising surface placed on one side of a trihedral corner reflector (TCR) as polarimetric calibrator is presented in this letter. The transpolarising-TCR (TTCR) presents a high backscattered cross-polar response contrary to standard TCRs. The performance of this device has been tested at X-band using the UPC GB-SAR.

  8. Radar cross section of triangular trihedral reflector with extended bottom plate.

    SciTech Connect (OSTI)

    Brock, Billy C.; Doerry, Armin Walter

    2009-05-01T23:59:59.000Z

    Trihedral corner reflectors are the preferred canonical target for SAR performance evaluation for many radar development programs. The conventional trihedrals have problems with substantially reduced Radar Cross Section (RCS) at low grazing angles, unless they are tilted forward, but in which case other problems arise. Consequently there is a need for better low grazing angle performance for trihedrals. This is facilitated by extending the bottom plate. A relevant analysis of RCS for an infinite ground plate is presented. Practical aspects are also discussed.

  9. Transpolarising Trihedral Corner Reflector Characterisation Using a GB-SAR System

    E-Print Network [OSTI]

    Pere J. Ferrer; Carlos Lopez-Martinez; Albert Aguasca; Luca Pipia; Jose M. Gonzalez-Arbesu; Xavier Fabregas; Jordi Romeu

    2011-02-10T23:59:59.000Z

    The use of a low profile, light weight and easy to fabricate transpolarising surface placed on one side of a trihedral corner reflector (TCR) as polarimetric calibrator is presented in this letter. The transpolarising-TCR (TTCR) presents a high backscattered cross-polar response contrary to standard TCRs. The performance of this device has been tested at X-band using the UPC GB-SAR.

  10. Design of Semiconductor-Based Back Reflectors for High Voc Monolithic Multijunction Solar Cells: Preprint

    SciTech Connect (OSTI)

    Garcia, I.; Geisz, J.; Steiner, M.; Olson, J.; Friedman, D.; Kurtz, S.

    2012-06-01T23:59:59.000Z

    State-of-the-art multijunction cell designs have the potential for significant improvement before going to higher number of junctions. For example, the Voc can be substantially increased if the photon recycling taking place in the junctions is enhanced. This has already been demonstrated (by Alta Devices) for a GaAs single-junction cell. For this, the loss of re-emitted photons by absorption in the underlying layers or substrate must be minimized. Selective back surface reflectors are needed for this purpose. In this work, different architectures of semiconductor distributed Bragg reflectors (DBR) are assessed as the appropriate choice for application in monolithic multijunction solar cells. Since the photon re-emission in the photon recycling process is spatially isotropic, the effect of the incident angle on the reflectance spectrum is of central importance. In addition, the DBR structure must be designed taking into account its integration into the monolithic multijunction solar cells, concerning series resistance, growth economics, and other issues. We analyze the tradeoffs in DBR design complexity with all these requirements to determine if such a reflector is suitable to improve multijunction solar cells.

  11. Method of manufacturing large dish reflectors for a solar concentrator apparatus

    DOE Patents [OSTI]

    Angel, Roger P (Tucson, AZ); Olbert, Blain H (Tucson, AZ)

    2011-12-27T23:59:59.000Z

    A method of manufacturing monolithic glass reflectors for concentrating sunlight in a solar energy system is disclosed. The method of manufacturing allows large monolithic glass reflectors to be made from float glass in order to realize significant cost savings on the total system cost for a solar energy system. The method of manufacture includes steps of heating a sheet of float glass positioned over a concave mold until the sheet of glass sags and stretches to conform to the shape of the mold. The edges of the dish-shaped glass are rolled for structural stiffening around the periphery. The dish-shaped glass is then silvered to create a dish-shaped mirror that reflects solar radiation to a focus. The surface of the mold that contacts the float glass preferably has a grooved surface profile comprising a plurality of cusps and concave valleys. This grooved profile minimizes the contact area and marring of the specular glass surface, reduces parasitic heat transfer into the mold and increases mold lifetime. The disclosed method of manufacture is capable of high production rates sufficiently fast to accommodate the output of a conventional float glass production line so that monolithic glass reflectors can be produced as quickly as a float glass production can make sheets of float glass to be used in the process.

  12. An Advanced Computational Scheme for the Optimization of 2D Radial Reflectors in Pressurized Water Reactors

    E-Print Network [OSTI]

    Clerc, Thomas; Leroyer, Hadrien; Argaud, Jean-Philippe; Bouriquet, Bertrand; Ponçot, Agélique

    2014-01-01T23:59:59.000Z

    This paper presents a computational scheme for the determination of equivalent 2D multi-group heterogeneous reflectors in a Pressurized Water Reactor (PWR). The proposed strategy is to define a full-core calculation consistent with a reference lattice code calculation such as the Method Of Characteristics (MOC) as implemented in APOLLO2 lattice code. The computational scheme presented here relies on the data assimilation module known as "Assimilation de donn\\'{e}es et Aide \\`{a} l'Optimisation (ADAO)" of the SALOME platform developed at \\'{E}lectricit\\'{e} De France (EDF), coupled with the full-core code COCAGNE and with the lattice code APOLLO2. A first validation of the computational scheme is made using the OPTEX reflector model developed at \\'{E}cole Polytechnique de Montr\\'{e}al (EPM). As a result, we obtain 2D multi-group, spatially heterogeneous 2D reflectors, using both diffusion or $\\text{SP}_{\\text{N}}$ operators. We observe important improvements of the power discrepancies distribution over the cor...

  13. Cas clinique Pneumopathie induite par l'hydroxyure

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'un traitement par hydroxyurée pour une fièvre élevée, une toux et des expectorations muqueuses associées à des

  14. CHAMBRE A TINCELLES CYLINDRIQUE A FILS AVEC ENREGISTREMENT PAR FERRITES

    E-Print Network [OSTI]

    Boyer, Edmond

    lues sur chaque matrice, par groupe de 32 en 8 fois chacune. L'enre- FIG. 3. Acquisition des données

  15. The effects of re-firing process under oxidizing atmosphere and temperatures on the properties of strontium aluminate phosphors

    SciTech Connect (OSTI)

    Karacaoglu, Erkul, E-mail: erkaracaoglu@gmail.com [Anadolu University, Graduate School of Sciences, Department of Materials Science and Engineering, Eskisehir (Turkey); Fosfortek Phosphor Technologies Co., Eskisehir (Turkey); Karasu, Bekir [Anadolu University, Materials Science and Engineering Department, Eskisehir (Turkey)

    2013-10-15T23:59:59.000Z

    Graphical abstract: The comparative emission spectra of standard and re-fired Phosphor A under oxidizing atmosphere at various temperatures. The colour of Phosphor A re-fired at higher temperatures above 900 °C shifted from yellowish-green to bluish-green in the dark. But, the bluish-green emission could only be seen when it was exposed to UV and disappeared as soon as the light source was removed. Moreover, the emission intensities decreased as the re-firing temperatures increased. This could be attributed to the oxidation of Eu{sup 2+} during the re-firing process. It is well known fact from the literature that the reduction of Eu{sup 3+} to Eu{sup 2+} in appropriate host materials needs an annealing process in a reducing atmosphere such as H{sub 2}, H{sub 2}/N{sub 2} mixture or CO. Up to now, the reduction phenomena of Eu{sup 3+} ? Eu{sup 2+} in air have been found in phosphates (Ba{sub 3}(PO{sub 4}){sub 2}:Eu), sulphates (BaSO{sub 4}:Eu), borates (SrB{sub 4}O{sub 7}:Eu, SrB{sub 6}O{sub 10}:Eu and BaB{sub 8}O{sub 13}:Eu) and aluminates (Sr{sub 4}Al{sub 14}O{sub 25}:Eu). Interestingly, an apparent blue shift in the phosphorescence spectrum was observed in the samples re-fired at 1000 °C and above, indicating a minimal effect on the oxidation state or the electronic energy levels of the co-doped Dy{sup 3+} ions, which were thought to act as long-lived hole traps resulting in long afterglow. - Highlights: • This study examines the effects re-firing at oxidizing atmosphere of photoluminescence of three different commercial SrAl{sub 2}O{sub 4}:Eu{sup 2+},Dy{sup 3+}-phosphors. • All the commercial SrAl{sub 2}O{sub 4}:Eu{sup 2+},Dy{sup 3+}-phosphors completely lost their phosphorescence after being re-fired at 1300 °C. • Oxidizing environment and re-firing temperature naturally affecting the valance of Eu{sup 2+} may cause the basic lattice structure to be modified and also limit their applications at higher temperatures, such as third firing vetrosa décor or glaze applications in ceramic industry. • It was thought that this kind of study may be promising to provide many outcome studies, may act to encourage additional efforts along these lines. - Abstract: Inorganic phosphorescent pigments have a very wide application, consisting of ceramic decoration and glazes. Therefore, in the present study 3 different commercially available strontium aluminate phosphors (coded Phosphor A, B and C) emitting yellowish-green light were investigated to determine their behaviour when re-fired under oxidizing atmosphere. The phosphors were re-fired at 10 different temperatures and consequent effects were studied. All the samples were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), laser particle size, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and fluorescence spectrometer analysis. It was found that firing them under oxidizing atmosphere strongly affected their phosphorescence abilities especially over 800–900 °C, because doped europium ions (Eu{sup 2+}) in their structures are oxidized to Eu{sup 3+}. It was also concluded that the phosphor powders clumped as the temperature rose, leading to their particle size distributions to change.

  16. prsente par VOLPE Pierre-Nicolas

    E-Print Network [OSTI]

    Boyer, Edmond

    THESE présentée par VOLPE Pierre-Nicolas Pour obtenir le grade de Docteur de l'Université Joseph Science (Tsukuba, Japon) Soutenue le 19 Octobre 2009 Composition du Jury : (Rapporteur) Jocelyn Achard) Pierre Muret (Co-Directeur de thèse) Franck Omnès (Co-Directeur de thèse) Julien Pernot tel-00436438

  17. MONITORING GEOCHIMIQUE PAR COUPLAGE ENTRE LES GAZ

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    on its use. Key words: Geological sequestration of CO2, monitoring, noble gases, carbon isotopes1 MONITORING GEOCHIMIQUE PAR COUPLAGE ENTRE LES GAZ RARES ET LES ISOTOPES DU CARBONE : ETUDE D GAZ RARES ET LES ISOTOPES DU CARBONE : ETUDE D'UN RESERVOIR NATUREL Présentée devant : L

  18. Squestration biologique du carbone par les cyanobactries

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . ______________________________________________________________________________________________________ TITRE en anglais Biological carbon sequestration by cyanobacteria1 Séquestration biologique du carbone par les cyanobactéries THESE PRESENTEE POUR L'OBTENTION DU, qui peuvent fixer du CO2 sous forme de biomasse et carbonate de calcium. Ce dernier, insoluble dans l

  19. AGirenPArTenAriAT despartenariats

    E-Print Network [OSTI]

    la gestion des écosystèmes majeurs de la région1 . Le séminaire Les intérieurs du Maroc a par'Institut national de recherche halieutique au Maroc,l'�colenationaled'ingénieursdeTunisoul'Institutnatio- nal

  20. INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLE N attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ou friction stir welding (FSW) 4 A-1 Principe du soudage par friction malaxage (friction stir welding septembre 2004 Titre : Genèse des microstructures lors du soudage par friction malaxage d'alliages d MATIERES i INTRODUCTION 1 CHAPITRE I. Etude bibliographique 4 A. Procédé de soudage par friction malaxage

  1. Asservissement par PID Application du PWM au pont en H

    E-Print Network [OSTI]

    Tardieu, Samuel

    Plan Asservissement par PID PWM Ponts en H Application du PWM au pont en H Bibliographie Asservissement par PID, PWM et Ponts en H Siwar, Cédric, Samuel Télécom Paristech 4 mars 2011 Siwar, Cédric, Samuel ROSE 1 / 33 4 mars 2011 #12;Plan Asservissement par PID PWM Ponts en H Application du PWM au pont

  2. Midtemperature Solar Systems Test Facility predictions for thermal performance of the Suntec solar collector with heat-formed glass reflector surface

    SciTech Connect (OSTI)

    Harrison, T.D.

    1980-11-01T23:59:59.000Z

    Thermal performance predictions are presented for the Suntec solar collector, with heat-formed glass reflector surface, for three output temperatures at five cities in the United States.

  3. NOMBRE DE RAYONS 03B1 MIS PAR UNE PRPARATION DE DPOT ACTIF DU THORIUM MESURE PAR SON RAYONNEMENT PNTRANT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    NOMBRE DE RAYONS 03B1 ÉMIS PAR UNE PRÉPARATION DE DÉPOT ACTIF DU THORIUM MESURÉE PAR SON cm de Pb. Résultats. 1. But du travail. - Le Radiothorium, le Thorium X et le dépôt actif du Thorium sont généralement dosés par leur rayonnement y provenant de Thorium (C + Cfl). A cet effet, à l

  4. Seismic wave propagation in thinly-layered media with steep reflectors

    SciTech Connect (OSTI)

    Deng, H.L.

    1992-05-01T23:59:59.000Z

    Seismic waves reflected from steep reflectors in the earth`s subsurface spend a significant amount of time travelling more or less horizontally. Therefore, accurate imaging of steep geologic structure requires knowledge of the behavior of these horizontally propagating waves. In particular, the effect of tunneling on seismic waves propagating in thinly-layered media must be understood. I describe a method for modeling seismic waves traveling in thinly-layered media. This method, a frequency-wavenumber finite-difference scheme coupled with the Born approximation, is useful in studying seismic waves reflected from steep geologic structures.

  5. Grant Title: DISSEMINATION AND IMPLEMENTATION RESEARCH IN HEALTH (R01, R03, R21) Funding Opportunity Number: PAR-13-055, PAR-13-056, PAR-13-054. CFDA Number(s): 93.242, 93.399,

    E-Print Network [OSTI]

    Farritor, Shane

    Opportunity Number: PAR-13-055, PAR-13-056, PAR-13-054. CFDA Number(s): 93.242, 93.399, 93.213, 93.172, 93

  6. See-through amorphous silicon solar cells with selectively transparent and conducting photonic crystal back reflectors for building integrated photovoltaics

    SciTech Connect (OSTI)

    Yang, Yang [The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Room GB254B, Toronto, Ontario M5S 3G4 (Canada)] [The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Room GB254B, Toronto, Ontario M5S 3G4 (Canada); O’Brien, Paul G. [Department of Materials Science and Engineering, University of Toronto, 184 College Street, Room 140, Toronto, Ontario M5S 3E4 (Canada) [Department of Materials Science and Engineering, University of Toronto, 184 College Street, Room 140, Toronto, Ontario M5S 3E4 (Canada); Materials Chemistry Research Group, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada); Ozin, Geoffrey A., E-mail: gozin@chem.utoronto.ca, E-mail: kherani@ecf.utoronto.ca [Materials Chemistry Research Group, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada); Kherani, Nazir P., E-mail: gozin@chem.utoronto.ca, E-mail: kherani@ecf.utoronto.ca [The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Room GB254B, Toronto, Ontario M5S 3G4 (Canada); Department of Materials Science and Engineering, University of Toronto, 184 College Street, Room 140, Toronto, Ontario M5S 3E4 (Canada)

    2013-11-25T23:59:59.000Z

    Thin semi-transparent hydrogenated amorphous silicon (a-Si:H) solar cells with selectively transparent and conducting photonic crystal (STCPC) back-reflectors are demonstrated. Short circuit current density of a 135?nm thick a-Si:H cell with a given STCPC back-reflector is enhanced by as much as 23% in comparison to a reference cell with an ITO film functioning as its rear contact. Concurrently, solar irradiance of 295?W/m{sup 2} and illuminance of 3480 lux are transmitted through the cell with a given STCPC back reflector under AM1.5 Global tilt illumination, indicating its utility as a source of space heating and lighting, respectively, in building integrated photovoltaic applications.

  7. Multiplier, moderator, and reflector materials for lithium-vanadium fusion blankets.

    SciTech Connect (OSTI)

    Gohar, Y.; Smith, D. L.

    1999-10-07T23:59:59.000Z

    The self-cooled lithium-vanadium fusion blanket concept has several attractive operational and environmental features. In this concept, liquid lithium works as the tritium breeder and coolant to alleviate issues of coolant breeder compatibility and reactivity. Vanadium alloy (V-4Cr-4Ti) is used as the structural material because of its superior performance relative to other alloys for this application. However, this concept has poor attenuation characteristics and energy multiplication for the DT neutrons. An advanced self-cooled lithium-vanadium fusion blanket concept has been developed to eliminate these drawbacks while maintaining all the attractive features of the conventional concept. An electrical insulator coating for the coolant channels, spectral shifter (multiplier, and moderator) and reflector were utilized in the blanket design to enhance the blanket performance. In addition, the blanket was designed to have the capability to operate at high loading conditions of 2 MW/m{sup 2} surface heat flux and 10 MW/m{sup 2} neutron wall loading. This paper assesses the spectral shifter and the reflector materials and it defines the technological requirements of this advanced blanket concept.

  8. MHD compressor---expander conversion system integrated with GCR inside a deployable reflector

    SciTech Connect (OSTI)

    Tuninetti, G. (Ansaldo S.p.A., Genoa (Italy). Research Div.); Botta, E.; Criscuolo, C.; Riscossa, P. (Ansaldo S.p.A., Genoa (Italy). Nuclear Div.); Giammanco, F. (Pisa Univ. (Italy). Dipt. di Fisica); Rosa-Clot, M. (Florence Univ. (Italy). Dipt. di Fisica)

    1989-04-20T23:59:59.000Z

    This work originates from the proposal MHD Compressor-Expander Conversion System Integrated with a GCR Inside a Deployable Reflector''. The proposal concerned an innovative concept of nuclear, closed-cycle MHD converter for power generation on space-based systems in the multi-megawatt range. The basic element of this converter is the Power Conversion Unit (PCU) consisting of a gas core reactor directly coupled to an MHD expansion channel. Integrated with the PCU, a deployable reflector provides reactivity control. The working fluid could be either uranium hexafluoride or a mixture of uranium hexafluoride and helium, added to enhance the heat transfer properties. The original Statement of Work, which concerned the whole conversion system, was subsequently redirected and focused on the basic mechanisms of neutronics, reactivity control, ionization and electrical conductivity in the PCU. Furthermore, the study was required to be inherently generic such that the study was required to be inherently generic such that the analysis an results can be applied to various nuclear reactor and/or MHD channel designs''.

  9. Optical and Durability Evaluation for Silvered Polymeric Mirrors and Reflectors: Cooperative Research and Development Final Report, CRADA Number, CRD-08-316

    SciTech Connect (OSTI)

    Gray, M.

    2014-08-01T23:59:59.000Z

    3M is currently developing silvered polymeric mirror reflectors as low-cost replacements for glass mirrors in concentrating solar power (CSP) systems. This effort is focused on development of reflectors comprising both metallized polymeric mirror films based on improved versions of ECP-305+ or other durable mirror film concepts and appropriate mechanically robust substrates. The objectives for this project are to reduce the system capital and operating costs and to lower the levelized cost of energy for CSP installations. The development of mirror reflectors involves work on both full reflectors and mirror films with and without coatings. Mirror reflectors must meet rigid optical specifications in terms of radius of curvature, slope errors and specularity. Mirror films must demonstrate long-term durability and maintain high reflectivity. 3M would like to augment internal capabilities to validate product performance with methods and tools developed at NREL to address these areas.

  10. A Review of the Reflector Compact Fluorescent Lights Technology Procurement Program: Conclusions and Results

    SciTech Connect (OSTI)

    Sandahl, Linda J.; Gilbride, Theresa L.; Ledbetter, Marc R.; McCullough, Jeffrey J.

    2008-05-19T23:59:59.000Z

    This report describes a project sponsored by the U.S. Department of Energy (DOE) and implemented by the Pacific Northwest National Laboratory (PNNL), from 2000 to 2007 to improve the performance of reflector type (R-lamp) compact fluorescent lamps (CFLs) and increase their availability throughout the United States by means of a technology development and procurement strategy. In 2000, at the request of the U.S. Department of Energy’s Emerging Technologies Program and its predecessors, the Pacific Northwest National Laboratory undertook a technology procurement seeking R-CFLs that were specifically designed for use in ICAT recessed can fixtures and that met other minimum performance criteria including minimum light output and size restrictions (to ensure they fit in standard residential recessed cans). The technology procurement included two phases. In Phase I, requests for proposals (RFPs) were issued in October 2002 and five manufacturers responded with 12 lamp models. Eight of these models met the minimum requirements and passed the 6-hour short-term test in a simulated ICAT environment. These eight models were subjected to long-term tests of 6,000 or more hours in a simulated ICAT environment. Three of these models passed the short- and long-term tests and were promoted through the program website (www.pnl.gov/rlamps), press releases, and fliers. To increase the number of qualifying models, a second RFP was issued in June 2005. In April 2007, DOE announced that 16 reflector CFL (R-CFL) models by four manufacturers had met all the minimum requirements of Phase 2 of the R-CFL Technology Innovation Competition. PNNL developed both the criteria and the test apparatus design for Elevated Temperature Life Testing (ETLT), which has been included by DOE in its draft ENERGY STAR specifications for the reflector category of CFLs. PNNL promoted the winning lamps through a program website, press releases, and fliers as well as through program partners. PNNL also helped engage distributors including Costco, the Home Depot, Bonneville Power Administration, and utility organizations.

  11. INCREASED CELL EFFICIENCY IN InGaAs THIN FILM SOLAR CELLS WITH DIELECTRIC AND METAL BACK REFLECTORS

    E-Print Network [OSTI]

    Atwater, Harry

    INCREASED CELL EFFICIENCY IN InGaAs THIN FILM SOLAR CELLS WITH DIELECTRIC AND METAL BACK REFLECTORS solar cells enable very high photovoltaic efficiencies by virtue of employing different band gap materials in series- connected tandem cells to access the full solar spectrum. Researchers focused

  12. Design and performance of a low-cost acrylic reflector for a ~7x concentrating photovoltaic module

    E-Print Network [OSTI]

    Rollins, Andrew M.

    of the prototype. The final design is an asymmetric compound parabolic concentrator mounted to an encapsulated increase in power output over an encapsulated receiver with no reflector. Keywords: compound parabolic push for drastic cost reductions in the deployment of solar electricity production has renewed interest

  13. PEP TALK - Policy - EVMS - PARS Update - Mel Frank, Chief, Project...

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

    and Project Management (APM) Glossary of Terms Handbook FINAL VERSION 9-30-2014 Earned Value (EV) Analysis and Project Assessment & Reporting System (PARS II) - APM Road...

  14. PARS II Training Materials | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM PolicyOfEnergyOutreach toOverviewOverview P - .PARS

  15. PAR and Supply Distribution System The PAR Program is administered by Materials Logistics (Central Distribution)

    E-Print Network [OSTI]

    Oliver, Douglas L.

    Logistics (Central Distribution) Services, a division of Materials Management. · The PAR Program is focused Administration: 1. See attached exhibit Models, 1-3 2. See Related Materials Management Forms 3. Weekly action group meeting(s) established to continue the work and ensuring good supply chain/materials management

  16. Ultracold neutron accumulation in a superfluid-helium converter with magnetic multipole reflector

    E-Print Network [OSTI]

    O. Zimmer; R. Golub

    2015-03-04T23:59:59.000Z

    We analyze accumulation of ultracold neutrons (UCN) in a superfluid-helium converter vessel surrounded by a magnetic multipole reflector. We solved the spin-dependent rate equation, employing formulas valid for adiabatic spin transport of trapped UCN in mechanical equilibrium. Results for saturation UCN densities are obtained in dependence of order and strength of the multipolar field. The addition of magnetic storage to neutron optical potentials can increase the density and energy of the low field seeking UCN produced and serves to mitigate the effects of wall losses on the source performance. It also can provide a highly polarized sample of UCN without need to polarize the neutron beam incident on the converter. This work was performed in preparation of the UCN source project SuperSUN at the ILL.

  17. New Method to Characterize Degradation of First Surface Aluminum Reflectors: Preprint

    SciTech Connect (OSTI)

    Sutter, F.; Heller, P.; Meyen, S.; Pitz-Paal, R.; Kennedy, C.; Fernandez-Garcia, A.; Schmucker, M.

    2010-10-01T23:59:59.000Z

    This paper reports the development of a new optical instrument capable of characterizing the aging process of enhanced first surface aluminum reflectors for concentrating solar power (CSP) application. Samples were exposed outdoors at different sites and in accelerated exposure tests. All samples exposed outdoors showed localized corrosion spots. Degradation originated from points of damage in the protective coating, but propagated underneath the protective coating. The degraded samples were analyzed with a microscope and with a newly designed space-resolved specular reflectometer (SR)2 that is capable of optically detecting and characterizing the corrosion spots. The device measures the specular reflectance at three acceptance angles and the wavelengths with spatial resolution using a digital camera's CMOS sensor. It can be used to measure the corrosion growth rate during outdoor and accelerated exposure tests. These results will allow a correlation between the degraded mirror surface and its specular reflectance.

  18. Nondestructive examination of 51 fuel and reflector elements from Fort St. Vrain Core Segment 1

    SciTech Connect (OSTI)

    Miller, C.M.; Saurwein, J.J.

    1980-12-01T23:59:59.000Z

    Fifty-one fuel and reflector elements irradiated in core segment 1 of the Fort St. Vrain High-Temperature Gas-Cooled Reactor (HTGR) were inspected dimensionally and visually in the Hot Service Facility at Fort St. Vrain in July 1979. Time- and volume-averaged graphite temperatures for the examined fuel elements ranged from approx. 400/sup 0/ to 750/sup 0/C. Fast neutron fluences varied from approx. 0.3 x 10/sup 25/ n/m/sup 2/ to 1.0 x 10/sup 25/ n/m/sup 2/ (E > 29 fJ)/sub HTGR/. Nearly all of the examined elements shrank in both axial and radial dimensions. The measured data were compared with strain and bow predictions obtained from SURVEY/STRESS, a computer code that employs viscoelastic beam theory to calculate stresses and deformations in HTGR fuel elements.

  19. Enhanced absorption of monolayer MoS{sub 2} with resonant back reflector

    SciTech Connect (OSTI)

    Liu, Jiang-Tao, E-mail: jtliu@semi.ac.cn; Liu, Nian-Hua [Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031 (China); Department of Physics, Nanchang University, Nanchang 330031 (China); Wang, Tong-Biao [Department of Physics, Nanchang University, Nanchang 330031 (China); Li, Xiao-Jing [College of Physics and Energy, Fujian Normal University, Fuzhou 350007 (China)

    2014-05-21T23:59:59.000Z

    The optical absorption of monolayer MoS{sub 2} on top of one-dimensional photonic crystal (1DPC) or metal films with spacer layers is theoretically investigated by extracting the permittivity of monolayer MoS{sub 2} from existing experimental results [K. F. Mak et al., Phys. Rev. Lett. 105, 136805 (2010)]. The absorption of graphene with 1DPC across a broad spectral range is substantially enhanced because of the photonic localization at the optical micro-cavity on top of the 1DPC or metal films. The absorption of monolayer MoS{sub 2} can be tuned by varying either the distance between the monolayer MoS{sub 2} and the back reflector or the thickness of the cover layers.

  20. Reactivity Accountability Attributed to Reflector Poisons in the High Flux Isotope Reactor

    SciTech Connect (OSTI)

    Chandler, David [ORNL; Maldonado, G Ivan [ORNL; Primm, Trent [ORNL

    2009-12-01T23:59:59.000Z

    The objective of this study is to develop a methodology to predict the reactivity impact as a function of outage time between cycles of 3He, 6Li, and other poisons in the High Flux Isotope Reactor s (HFIR) beryllium reflector. The reactivity worth at startup of the HFIR has been incorrectly predicted in the past after the reactor has been shut-down for long periods of time. The incorrect prediction was postulated to be due to the erroneous calculation of 3He buildup in the beryllium reflector. It is necessary to develop a better estimate of the start-of-cycle symmetric critical control element positions since if the estimated and actual symmetrical critical control element positions differ by more than $1.55 in reactivity (approximately one-half inch in control element startup position), HFIR is to be shutdown and a technical evaluation is performed to resolve the discrepancy prior to restart. 3He is generated and depleted during operation, but during an outage, the depletion of 3He ceases because it is a stable isotope. 3He is born from the radioactive decay of tritium, and thus the concentration of 3He increases during shutdown. SCALE, specifically the TRITON and CSAS5 control modules including the KENO V.A, COUPLE, and ORIGEN functional modules were utilized in this study. An equation relating the down time (td) to the change in symmetric control element position was generated and validated against measurements for approximately 40 HFIR operating cycles. The newly-derived correlation was shown to improve accuracy of predictions for long periods of down time.

  1. aux etats-unis par: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  2. adp-ribose par immunoassay: Topics by E-print Network

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

    Sciences Websites Summary: , David Wessel, and Kathy Yelick UC Berkeley Par Lab End-of-Project Party May 30, 2013 12;BERKELEY PAR LAB Par Lab Timeline 2 Initial Meetings...

  3. Criticality Safety Analysis on the Mixed Be, Nat-U, and C (Graphite) Reflectors in 55-Gallon Waste Drums and Their Equivalents for HWM Applications

    SciTech Connect (OSTI)

    Chou, P

    2011-12-14T23:59:59.000Z

    The objective of this analysis is to develop and establish the technical basis on the criticality safety controls for the storage of mixed beryllium (Be), natural uranium (Nat-U), and carbon (C)/graphite reflectors in 55-gallon waste containers and/or their equivalents in Hazardous Waste Management (HWM) facilities. Based on the criticality safety limits and controls outlined in Section 3.0, the operations involving the use of mixed-reflector drums satisfy the double-contingency principle as required by DOE Order 420.1 and are therefore criticality safe. The mixed-reflector mass limit is 120 grams for each 55-gallon drum or its equivalent. a reflector waiver of 50 grams is allowed for Be, Nat-U, or C/graphite combined. The waived reflectors may be excluded from the reflector mass calculations when determining if a drum is compliant. The mixed-reflector drums are allowed to mix with the typical 55-gallon one-reflector drums with a Pu mass limit of 120 grams. The fissile mass limit for the mixed-reflector container is 65 grams of Pu equivalent each. The corresponding reflector mass limits are 300 grams of Be, and/or 100 kilograms of Nat-U, and/or 110 kilograms of C/graphite for each container. All other unaffected control parameters for the one-reflector containers remain in effect for the mixed-reflector drums. For instance, Superior moderators, such as TrimSol, Superla white mineral oil No. 9, paraffin, and polyethylene, are allowed in unlimited quantities. Hydrogenous materials with a hydrogen density greater than 0.133 gram/cc are not allowed. Also, an isolation separation of no less than 76.2 cm (30-inch) is required between a mixed array and any other array. Waste containers in the action of being transported are exempted from this 76.2-cm (30-inch) separation requirement. All deviations from the CS controls and mass limits listed in Section 3.0 will require individual criticality safety analyses on a case-by-case basis for each of them to confirm their criticality safety prior to their deployment and implementation.

  4. APPLICATION DES PALIERS A GAZ AUX GYROSCOPES Par G. GOBERT,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    43 APPLICATION DES PALIERS A GAZ AUX GYROSCOPES Par G. GOBERT, Centre d'Études Nucléaires de Saclay. Résumé. 2014 L'étude des frottements dans les paliers à lubrification par gaz permet de cons- truire un avec, au centre, une turbine à réaction. Ces rotors sont placés entre deux butées coniques métalliques

  5. Feuilletage lisse de S5 par surfaces complexes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Feuilletage lisse de S5 par surfaces complexes Smooth foliation of S5 by complex surfaces Guillaume´esum´e En 2002 Meersseman-Verjovsky [2] ont construit un feuilletage de codimension un de S5 par feuilles codimension un sur S5 avec une seule feuille compacte, ´etait optimal du point de vue du nombre de feuilles

  6. STRUCTURE DES COUCHES DE NIOBIUM PRPARES PAR PULVRISATION TRIODE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    415 STRUCTURE DES COUCHES DE NIOBIUM PRÉPARÉES PAR PULVÉRISATION TRIODE EXISTENCE D'UNE PHASE, Bellevue Résumé. 2014 Par pulvérisation cathodique, le niobium, normalement cubique centré (a = 3,29 Å. Abstract. 2014 Sputtering of normally b. c. c. Niobium (a = 3.29 Å) on Sodium Chloride gives amorphous

  7. Reflector Technology Development and System Design for Concentrating Solar Power Technologies

    SciTech Connect (OSTI)

    Adam Schaut

    2011-12-30T23:59:59.000Z

    Alcoa began this program in March of 2008 with the goal of developing and validating an advanced CSP trough design to lower the levelized cost of energy (LCOE) as compared to existing glass based, space-frame trough technology. In addition to showing a pathway to a significant LCOE reduction, Alcoa also desired to create US jobs to support the emerging CSP industry. Alcoa's objective during Phase I: Concept Feasibility was to provide the DOE with a design approach that demonstrates significant overall system cost savings without sacrificing performance. Phase I consisted of two major tasks; reflector surface development and system concept development. Two specific reflective surface technologies were investigated, silver metallized lamination, and thin film deposition both applied on an aluminum substrate. Alcoa prepared samples; performed test validation internally; and provided samples to the NREL for full-spectrum reflectivity measurements. The final objective was to report reflectivity at t = 0 and the latest durability results as of the completion of Phase 1. The target criteria for reflectance and durability were as follows: (1) initial (t = 0), hemispherical reflectance >93%, (2) initial spectral reflectance >90% for 25-mrad reading and >87% for 7-mrad reading, and (3) predicted 20 year durability of less than 5% optical performance drop. While the results of the reflective development activities were promising, Alcoa was unable to down-select on a reflective technology that met the target criteria. Given the progress and potential of both silver film and thin film technologies, Alcoa continued reflector surface development activities in Phase II. The Phase I concept development activities began with acquiring baseline CSP system information from both CSP Services and the DOE. This information was used as the basis to develop conceptual designs through ideation sessions. The concepts were evaluated based on estimated cost and high-level structural performance. The target criteria for the concept development was to achieve a solar field cost savings of 25%-50% thereby meeting or exceeding the DOE solar field cost savings target of $350/m2. After evaluating various structural design approaches, Alcoa down-selected to a monocoque, dubbed Wing Box, design that utilizes the reflective surface as a structural, load carrying member. The cost and performance potential of the Wing Box concept was developed via initial finite element analysis (FEA) and cost modeling. The structural members were sized through material utilization modeling when subjected to representative loading conditions including wind loading. Cost modeling was utilized to refine potential manufacturing techniques that could be employed to manufacture the structural members. Alcoa concluded that an aluminum intensive collector design can achieve significant cost savings without sacrificing performance. Based on the cost saving potential of this Concept Feasibility study, Alcoa recommended further validation of this CSP approach through the execution of Phase II: Design and Prototype Development. Alcoa Phase II objective was to provide the DOE with a validated CSP trough design that demonstrates significant overall system cost savings without sacrificing performance. Phase II consisted of three major tasks; Detail System Design, Prototype Build, and System Validation. Additionally, the reflector surface development that began in Phase I was continued in Phase II. After further development work, Alcoa was unable to develop a reflective technology that demonstrated significant performance or cost benefits compared to commercially available CSP reflective products. After considering other commercially available reflective surfaces, Alcoa selected Alano's MIRO-SUN product for use on the full scale prototype. Although MIRO-SUN has a lower specular reflectivity compared to other options, its durability in terms of handling, cleaning, and long-term reflectivity was deemed the most important attribute to successfully validate Alcoa's advanced trough archi

  8. Midtemperature solar systems test facility predictions for thermal performance based on test data. Toltec two-axis tracking solar collector with 3M acrylic polyester film reflector surface

    SciTech Connect (OSTI)

    Harrison, T.D.

    1981-06-01T23:59:59.000Z

    Thermal performance predictions based on test data are presented for the Toltec solar collector, with acrylic film reflector surface, for three output temperatures at five cities in the United States.

  9. Midtemperature Solar Systems Test Facility predictions for thermal performance of the Solar Kinetics T-700 solar collector with FEK 244 reflector surface

    SciTech Connect (OSTI)

    Harrison, T.D.

    1980-11-01T23:59:59.000Z

    Thermal performance predictions are presented for the Solar Kinetics T-700 solar collector, with FEK 244 reflector surface, for three output temperatures at five cities in the United States.

  10. Midtemperature solar systems test facility predictions for thermal performance based on test data. Polisolar Model POL solar collector with glass reflector surface

    SciTech Connect (OSTI)

    Harrison, T.D.

    1981-05-01T23:59:59.000Z

    Thermal performance predictions based on test data are presented for the Polisolar Model POL solar collector, with glass reflector surfaces, for three output temperatures at five cities in the United States.

  11. Monte Carlo analysis of a monolithic interconnected module with a back surface reflector

    SciTech Connect (OSTI)

    Ballinger, C.T.; Charache, G.W. [Lockheed Martin Corp., Schenectady, NY (United States); Murray, C.S. [Bettis Atomic Power Lab., West Mifflin, PA (United States)

    1998-10-01T23:59:59.000Z

    Recently, the photon Monte Carlo code, RACER-X, was modified to include wave-length dependent absorption coefficients and indices of refraction. This work was done in an effort to increase the code`s capabilities to be more applicable to a wider range of problems. These new features make RACER-X useful for analyzing devices like monolithic interconnected modules (MIMs) which have etched surface features and incorporates a back surface reflector (BSR) for spectral control. A series of calculations were performed on various MIM structures to determine the impact that surface features and component reflectivities have on spectral utilization. The traditional concern of cavity photonics is replaced with intra-cell photonics in the MIM design. Like the cavity photonic problems previously discussed, small changes in optical properties and/or geometry can lead to large changes in spectral utilization. The calculations show that seemingly innocuous surface features (e.g., trenches and grid lines) can significantly reduce the spectral utilization due to the non-normal incident photon flux. Photons that enter the device through a trench edge are refracted onto a trajectory where they will not escape. This leads to a reduction in the number of reflected below bandgap photons that return to the radiator and reduce the spectral utilization. In addition, trenches expose a lateral conduction layer in this particular series of calculations which increase the absorption of above bandgap photons in inactive material.

  12. Non-astigmatic imaging with matched pairs of spherically bent reflectors

    DOE Patents [OSTI]

    Bitter, Manfred Ludwig (Princeton, NJ); Hill, Kenneth Wayne (Plainsboro, NJ); Scott, Steven Douglas (Wellesley, MA); Feder, Russell (Newton, PA); Ko, Jinseok (Cambridge, MA); Rice, John E. (N. Billerica, MA); Ince-Cushman, Alexander Charles (New York, NY); Jones, Frank (Manalapan, NJ)

    2012-07-10T23:59:59.000Z

    Arrangements for the point-to-point imaging of a broad spectrum of electromagnetic radiation and ultrasound at large angles of incidence employ matched pairs of spherically bent reflectors to eliminate astigmatic imaging errors. Matched pairs of spherically bent crystals or spherically bent multi-layers are used for X-rays and EUV radiation; and matched pairs of spherically bent mirrors that are appropriate for the type of radiation are used with microwaves, infrared and visible light, or ultrasound. The arrangements encompass the two cases, where the Bragg angle--the complement to the angle of incidence in optics--is between 45.degree. and 90.degree. on both crystals/mirrors or between 0.degree. and 45.degree. on the first crystal/mirror and between 45.degree. and 90.degree. on the second crystal/mirror, where the angles of convergence and divergence are equal. For x-rays and EUV radiation, also the Bragg condition is satisfied on both spherically bent crystals/multi-layers.

  13. VISAR (Velocity Interferometer System for Any Reflector): Line-imaging interferometer

    SciTech Connect (OSTI)

    Hemsing, W.F.; Mathews, A.R.; Warnes, R.H.; Whittemore, G.R.

    1990-01-01T23:59:59.000Z

    This paper describes a Velocity Interferometer System for Any Reflector (VISAR) technique that extends velocity measurements from single points to a line. Single-frequency argon laser light was focused through a cylindrical lens to illuminate a line on a surface. The initially stationary, flat surface was accelerated unevenly during the experiment. Motion produced a Doppler-shift of light reflected from the surface that was proportional to the velocity at each point. The Doppler-shifted image of the illuminated line was focused from the surface through a push-pull VISAR interferometer where the light was split into four quadrature-coded images. When the surface accelerated, the Doppler-shift caused the interference for each point on each line image to oscillate sinusoidally. Coherent fiber optic bundles transmitted images from the interferometer to an electronic streak camera for sweeping in time and recording on film. Data reduction combined the images to yield a continuous velocity and displacement history for all points on the surface that reflected sufficient light. The technique was demonstrated in an experiment where most of the surface was rapidly driven to a saddle shape by an exploding foil. Computer graphics were used to display the measured velocity history and to aid visualization of the surface motion. 6 refs., 8 figs.

  14. Graphite and Beryllium Reflector Critical Assemblies of UO2 (Benchmark Experiments 2 and 3)

    SciTech Connect (OSTI)

    Margaret A. Marshall; John D. Bess

    2012-11-01T23:59:59.000Z

    INTRODUCTION A series of experiments was carried out in 1962-65 at the Oak Ridge National Laboratory Critical Experiments Facility (ORCEF) for use in space reactor research programs. A core containing 93.2 wt% enriched UO2 fuel rods was used in these experiments. The first part of the experimental series consisted of 252 tightly-packed fuel rods (1.27-cm triangular pitch) with graphite reflectors [1], the second part used 252 graphite-reflected fuel rods organized in a 1.506-cm triangular-pitch array [2], and the final part of the experimental series consisted of 253 beryllium-reflected fuel rods in a 1.506-cm-triangular-pitch configuration and in a 7-tube-cluster configuration [3]. Fission rate distribution and cadmium ratio measurements were taken for all three parts of the experimental series. Reactivity coefficient measurements were taken for various materials placed in the beryllium reflected core. All three experiments in the series have been evaluated for inclusion in the International Reactor Physics Experiment Evaluation Project (IRPhEP) [4] and the International Criticality Safety Benchmark Evaluation Project (ICSBEP) Handbooks, [5]. The evaluation of the first experiment in the series was discussed at the 2011 ANS Winter meeting [6]. The evaluations of the second and third experiments are discussed below. These experiments are of interest as benchmarks because they support the validation of compact reactor designs with similar characteristics to the design parameters for a space nuclear fission surface power systems [7].

  15. InAlN/GaN Bragg reflectors grown by plasma-assisted molecular beam epitaxy

    SciTech Connect (OSTI)

    Gacevic, Z.; Fernandez-Garrido, S.; Calleja, E. [ISOM, Universidad Politecnica de Madrid, Avda Complutense s/n, 28040 Madrid (Spain); Hosseini, D.; Peiro, F. [Departament d'Electronica, LENS-MIND-IN2UB, Universitat de Barcelona, Marti i Franques 1, 08028 Barcelona (Spain); Estrade, S. [Departament d'Electronica, LENS-MIND-IN2UB, Universitat de Barcelona, Marti i Franques 1, 08028 Barcelona (Spain); TEM-MAT, SCT-UB, Sole i Sabaris 1, 08028 Barcelona (Spain)

    2010-12-01T23:59:59.000Z

    We report on molecular beam epitaxy growth and characterization of ten-period lattice-matched InAlN/GaN distributed Bragg reflectors (DBRs), with peak reflectivity centered around 400 nm. Thanks to the well tuned ternary alloy composition, crack-free surfaces have been obtained, as confirmed by both optical and transmission electron microscopy (TEM). Their good periodicity and well-defined interfaces have been confirmed by both x-ray diffraction and TEM measurements. Peak reflectivity values as high as 60% with stop bands of 30 nm have been demonstrated. Optical measurements revealed that discrepancy between the obtained (60%) and the theoretically expected ({approx}75%) reflectivity is a consequence of significant residual absorption ({approx}35%). TEM measurements revealed the coexistence of zinc-blende and wurtzite phases, as well as planar defects, mainly in GaN. These defects are suggested as the potential source of the undesired absorption and/or scattering effects that lowered the DBRs' peak reflectivity.

  16. Searching for optimal mitigation geometries for laser-resistant multilayer high-reflector coatings

    SciTech Connect (OSTI)

    Qiu, S. Roger; Wolfe, Justin E.; Monterrosa, Anthony M.; Feit, Michael D.; Pistor, Thomas V.; Stolz, Christopher J.

    2011-03-20T23:59:59.000Z

    Growing laser damage sites on multilayer high-reflector coatings can limit mirror performance. One of the strategies to improve laser damage resistance is to replace the growing damage sites with predesigned benign mitigation structures. By mitigating the weakest site on the optic, the large-aperture mirror will have a laser resistance comparable to the intrinsic value of the multilayer coating. To determine the optimal mitigation geometry, the finite-difference time-domain method was used to quantify the electric-field intensification within the multilayer, at the presence of different conical pits. We find that the field intensification induced by the mitigation pit is strongly dependent on the polarization and the angle of incidence (AOI) of the incoming wave. Therefore, the optimal mitigation conical pit geometry is application specific. Furthermore, our simulation also illustrates an alternative means to achieve an optimal mitigation structure by matching the cone angle of the structure with the AOI of the incoming wave, except for the p-polarized wave at a range of incident angles between 30 deg. and 45 deg.

  17. Two-port multimode interference reflectors based on aluminium mirrors in a thick SOI platform

    E-Print Network [OSTI]

    Fandiño, Javier S; Muñoz, Pascual

    2015-01-01T23:59:59.000Z

    Multimode interference reflectors (MIRs) were recently introduced as a new type of photonic integrated devices for on-chip, broadband light reflection. In the original proposal, different MIRs were demonstrated based on total internal reflection mirrors made of two deep-etched facets. Although simpler to fabricate, this approach imposes certain limits on the shape of the field pattern at the reflecting facets, which in turn restricts the types of MIRs that can be implemented. In this work, we propose and experimentally demonstrate the use of aluminium-based mirrors for the design of 2-port MIRs with variable reflectivity. These mirrors do not impose any restrictions on the incident field, and thus give more flexibility at the design stage. Different devices with reflectivities between~0~and~0.5 were fabricated in a 3~um thick SOI platform, and characterization of multiple dies was performed to extract statistical data about their performance. Our measurements show that, on average, losses both in the aluminiu...

  18. LECTRISATION ET CONDUCTION LECTRIQUE DES HYDROCARBURES LIQUIDES par L. BRUNINGHAUS.

    E-Print Network [OSTI]

    Boyer, Edmond

    ÉLECTRISATION ET CONDUCTION ÉLECTRIQUE DES HYDROCARBURES LIQUIDES par L. BRUNINGHAUS. Sommaire. - I. Electrisation des hydrocarbures. - Les hydrocarbures liquides s'électrisent (négativement) lorsqu'ils s hydrocarbures. - Les hydrocarbures liquides mani- festent trois régimes de conduction : 1° En couches épaisses

  19. ADVISORY ALERT: Dekker, Ltd. Digital Signature - PARS II...

    Energy Savers [EERE]

    so that you may continue working with PARS II reports. Please note: Once you complete the process of accepting the Dekker, LTd. digital signature, this warning will not re-appear....

  20. INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLE attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    14 novembre 2006 Titre : Détection d'objets enfouis sur le fond marin par ondes sismo-acoustiques de'objets enfouis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Utilisation des ondes sismo-acoustiques de surface . . . . . . . . . . . . . . . . . 2 SONAR sismo

  1. The L Prize PAR 38 Competition: A New Start

    Broader source: Energy.gov [DOE]

    This March 27, 2012 webcast presented information on the newly reopened L Prize® PAR 38 competition. Moderated by James Brodrick, DOE Lighting Program Manager, the webcast featured an overview of...

  2. PRODUCTION DE TRITIUM DANS LE THORIUM PAR DES PROTONS DE 135 MeV Par M. LEFORT, G. SIMONOFF et X. TARRAGO

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    959 PRODUCTION DE TRITIUM DANS LE THORIUM PAR DES PROTONS DE 135 MeV Par M. LEFORT, G. SIMONOFF et thorium par des protons de 135 MeV accélérés au synchro-cyclotron d'Orsay. Le tritium était extrait des measured the cross-section of tritium production by bombardement of thorium by 135 MeV protons in the Orsay

  3. DTERMINATION PRCISE DE L'NERGIE DES RAYONS 03B1 EMIS PAR LE THORIUM Par M. GEORGES PHILBERT, Mme JEANNINE GNIN et M. LOPOLD VIGNERON,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    16 DÉTERMINATION PRÉCISE DE L'ÉNERGIE DES RAYONS 03B1 EMIS PAR LE THORIUM Par M. GEORGES PHILBERT. Sommaire. 2014 Du thorium, de l'ionium et du polonium ont été introduits ensemble dans une émulsion, les et autres nous ont permis de ne pas être gênés par les dérivés radioactifs du thorium. L

  4. 1 5-9.2002 . We report the core and reflector design parameters of reactor PIK needed for neutronic calculations.

    E-Print Network [OSTI]

    Titov, Anatoly

    PIK, needed for the reactor neutronic calculation. All up-to-date design modifications are taken÷òåíû ïîñëåäíèå èçìåíåíèÿ â êîíñòðóêöèè. Abstract We report the core and reflector design parameters of reactor PIK needed for neutronic calculations. The recent changes are taken into account. Ïðåïðèíò ¹2472, 12

  5. Broadband absorption enhancement in ultra-thin crystalline Si solar cells by incorporating metallic and dielectric nanostructures in the back reflector

    E-Print Network [OSTI]

    Jain, Samart; Miljkovic, Vladimir D; Dmitriev, Alexamder; Trompoukis, Christos; Gordon, Ivan; van Dorpe, Pol; Daif, Ounsi El

    2013-01-01T23:59:59.000Z

    We propose a back-reflecting scheme in order to enhance the maximum achievable current in one micron thick crystalline silicon solar cells. We perform 3-dimensional numerical investigations of the scattering properties of metallic nanostructures located at the back side, and optimize them for enhancing absorption in the silicon layer. We validate our numerical results experimentally and also compare the absorption enhancement in the solar cell structure, both with quasi-periodic and random metallic nanostructures. We have looked at the interplay between the metallic nanostructures and an integrated back-reflector. We show that the combination of metallic nanoparticles and a metallic reflector results in significant parasitic absorption. We compared this to another implementation based on titanium dioxide nanoparticles which act as a lambertian reflector of light. Our simulation and experimental results show that this proposed configuration results in reduced absorption losses and in broadband enhancement of a...

  6. Effect of non-uniform slow wave structure in a relativistic backward wave oscillator with a resonant reflector

    SciTech Connect (OSTI)

    Chen, Changhua; Xiao, Renzhen; Sun, Jun; Song, Zhimin; Huo, Shaofei; Bai, Xianchen; Shi, Yanchao; Liu, Guozhi [Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)] [Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)

    2013-11-15T23:59:59.000Z

    This paper provides a fresh insight into the effect of non-uniform slow wave structure (SWS) used in a relativistic backward wave oscillator (RBWO) with a resonant reflector. Compared with the uniform SWS, the reflection coefficient of the non-uniform SWS is higher, leading to a lower modulating electric field in the resonant reflector and a larger distance to maximize the modulation current. Moreover, for both types of RBWOs, stronger standing-wave field takes place at the rear part of the SWS. In addition, besides Cerenkov effects, the energy conversion process in the RBWO strongly depends on transit time effects. Thus, the matching condition between the distributions of harmonic current and standing wave field provides a profound influence on the beam-wave interaction. In the non-uniform RBWO, the region with a stronger standing wave field corresponds to a higher fundamental harmonic current distribution. Particle-in-cell simulations show that with a diode voltage of 1.02 MV and beam current of 13.2 kA, a microwave power of 4 GW has been obtained, compared to that of 3 GW in the uniform RBWO.

  7. Solar passive ceiling system. Final report. [Passive solar heating system with venetian blind reflectors and latent heat storage in ceiling

    SciTech Connect (OSTI)

    Schneider, A.R.

    1980-01-01T23:59:59.000Z

    The construction of a 1200 square foot building, with full basement, built to be used as a branch library in a rural area is described. The primary heating source is a passive solar system consisting of a south facing window system. The system consists of: a set of windows located in the south facing wall only, composed of double glazed units; a set of reflectors mounted in each window which reflects sunlight up to the ceiling (the reflectors are similar to venetian blinds); a storage area in the ceiling which absorbs the heat from the reflected sunlight and stores it in foil salt pouches laid in the ceiling; and an automated curtain which automatically covers and uncovers the south facing window system. The system is totally passive and uses no blowers, pumps or other active types of heat distribution equipment. The building contains a basement which is normally not heated, and the north facing wall is bermed four feet high around the north side.

  8. DESCRIPTION PAR L'OPRATEUR DENSIT DU MOUVEMENT STATISTIQUE DE L'EXCITON LECTRONIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    excitations electro- niques elementaires de l'agrégat. Le probleme est le suivant : dans 1'hypothese ou Fon sait (a I'aide d'un piege energetique, ou par interference d'excitations optiques ou par excitation

  9. TUDE CALORIMTRIQUE DU RAYONNEMENT DU DPT ACTIF DU THORIUM Par L. WINAND,

    E-Print Network [OSTI]

    Boyer, Edmond

    ÉTUDE CALORIMÉTRIQUE DU RAYONNEMENT DU DÉPÔT ACTIF DU THORIUM Par L. WINAND, Laboratoire Curie signalerons seulement que le circuit galvanométrique est composé (1) L. wINAVD, Étude de l'énergie dégagée par

  10. Sur les thories des dilectriques Par Tcheslas BIALOBJESKI

    E-Print Network [OSTI]

    Boyer, Edmond

    pôle de la batterie (l'autre pôle étant au sol), il se produit par induction une charge Fig. 1 décharge du condensateur en réunissant les armatures entre elles, les charges inductives se neutralisent en- sateur plan. Faisons communiquer une armature de ce condensateur avec une batterie de petits accumula

  11. Universite des Sciences et Technologies de Lille Travaux presentes par

    E-Print Network [OSTI]

    Madeleine, Jean-Baptiste

    Universit´e des Sciences et Technologies de Lille Travaux pr´esent´es par M. Olivier Boucher en vue de l'obtention de L'HABILITATION A DIRIGER DES RECHERCHES EN SCIENCES PHYSIQUES Effets radiatifs-Jacques Morcrette Rapporteur Didier Tanr´e Examinateur U.F.R de Physique Fondamentale Laboratoire d'Optique Atmosph

  12. INTERPRTATION GOMTRIQUE DES INTGRALES DE FRESNEL ; Par M. N. OUMOFF.

    E-Print Network [OSTI]

    Boyer, Edmond

    281 INTERPRÉTATION GÉOMÉTRIQUE DES INTÉGRALES DE FRESNEL ; Par M. N. OUMOFF. I. - Pour représenter ', a pour valeur : Elle représente toujours l'intégrale A de Fresnel si l'on compte les boucles de -1 3) représente l'intégrale B de Fresnel sous des conditions analogues. Les maximum de B sont

  13. Contrle du comportement ingestif et mrycique par les neuropeptides

    E-Print Network [OSTI]

    Boyer, Edmond

    Contrôle du comportement ingestif et mérycique par les neuropeptides L. BUÉNO, P. RIVIÈRE Station. Neuropeptidergic control of feeding behavior and rumination in sheep. In sheep as in other species. Introduction. L'hypothèse de l'existence d'une régulation centrale neuropeptidergique de l'appétit est récente

  14. projet conjoint parrain par la Fondation Shell et Shell Gabon, des chercheurs de l'Institution

    E-Print Network [OSTI]

    Baker, Robert J.

    projet conjoint parrainé par la Fondation Shell et Shell Gabon, des chercheurs de l, le Cameroun et la Guinée-Équatoriale. Le pays est baigné par un climat tropical humide avec une'orientation par écholocation des Microchiroptères représente une adaptation évolutive unique à la vie nocturne

  15. SUR UN SILICATE DE CADMIUM LUMINESCENT Par A. LEVIALDI et V. LUZZATI.

    E-Print Network [OSTI]

    Boyer, Edmond

    SUR UN SILICATE DE CADMIUM LUMINESCENT Par A. LEVIALDI et V. LUZZATI. Sommaire. - �tude de quelques propriétés d'un silicate de cadmium (1) luminescent. Leur interpré- tation par la théorie des trappes de silicate de cadmium par des radiations ultra- violettes de longueur d'onde voisine de ), = 2537 A

  16. Focusing electrode and coaxial reflector used for reducing the guiding magnetic field of the Ku-band foilless transit-time oscillator

    SciTech Connect (OSTI)

    Ling, Junpu; Zhang, Jiande; He, Juntao, E-mail: hejuntao12@163.com; Wang, Lei; Deng, Bingfang [College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

    2014-08-15T23:59:59.000Z

    Based on the theoretical analysis of the intense relativistic electron beam propagation in the coaxial drift-tube, a focusing electrode and a coaxial reflector is proposed to lessen the demand of the coaxial Ku-band foilless transit-time oscillator (TTO) for the guiding magnetic field. Moreover, a Ku-band TTO with the focusing electrode and the coaxial reflector is designed and studied by particle in cell simulation. When the diode voltage is 390 kV, the beam current 7.8 kA, and the guiding magnetic field is only 0.3 T, the device can output 820 MW microwave pulse at 14.25 GHz by means of the simulation. However, for the device without them, the output power is only 320 MW. The primary experiments are also carried out. When the guiding magnetic field is 0.3 T, the output power of the device with the focusing electrode and the coaxial reflector is double that of the one without them. The simulation and experimental results prove that the focusing electrode and the coaxial reflector are effective on reducing the guiding magnetic field of the device.

  17. 2014-04-11 Issuance: Energy Conservation Standards for General Service Fluorescent Lamps and Incandescent Reflector Lamps; Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of proposed rulemaking regarding energy conservation standards for general service fluorescent lamps and incandescent reflectors lamps, as issued by the Assistant Secretary for Energy Efficiency and Renewable Energy on April 11, 2014.

  18. GaN-based two-dimensional surface-emitting photonic crystal lasers with AlN/GaN distributed Bragg reflector

    E-Print Network [OSTI]

    Fan, Shanhui

    GaN-based two-dimensional surface-emitting photonic crystal lasers with AlN/GaN distributed Bragg 14 December 2007; published online 11 January 2008 GaN-based two-dimensional 2D surface-emitting photonic crystal PC lasers with AlN/GaN distributed Bragg reflectors are fabricated and demonstrated

  19. Midtemperature Solar Systems Test Facility predictions for thermal performance based on test data: Custom Engineering trough with glass reflector surface and Sandia-designed receivers

    SciTech Connect (OSTI)

    Harrison, T.D.

    1981-05-01T23:59:59.000Z

    Thermal performance predictions based on test data are presented for the Custom Engineering trough and Sandia-designed receivers, with glass reflector surface, for three output temperatures at five cities in the United States. Two experimental receivers were tested, one with an antireflective coating on the glass envelope around the receiver tube and one without the antireflective coating.

  20. Terr. Atmos. Ocean. Sci., Vol. 17, No. 4, 739-756, December 2006 Velocity Structure in Marine Sediments with Gas Hydrate Reflectors

    E-Print Network [OSTI]

    Lin, Andrew Tien-Shun

    Sediments with Gas Hydrate Reflectors in Offshore SW Taiwan, from OBS Data Tomography Win-Bin Cheng 1 be considered a result of local shallowing of the base of the gas hydrate stability zone, caused by ascending structure was ob- served and could be associated with the phenomenon of hydrate/gas phase boundary

  1. LA DIFFUSION DE LA LUMIRE PAR LE MTHANE ET SES HOMOLOGUES GAZEUX par MM. J. CABANNES et J. GAUZIT,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    hydrocarbures saturés gazeux de la série grasse n'est pas complètement polarisée. Le facteur de dépolarisation molécules voisines. Dans le travail actuel, nous avons choisi comme sujets d'expérience les hydrocarbures;183 2. Préparation des hydrocarbures. - Nous avons préparé les terrnes de la série par le procédé

  2. Efficient directional spontaneous emission from an InGaAs/InP heterostructure with an integral parabolic reflector

    SciTech Connect (OSTI)

    Gfroerer, T.H.; Cornell, E.A. [JILA, National Institute of Standards and Technology and University of Colorado, and Department of Physics, University of Colorado, Boulder, Colorado, 80309-0440 (United States)] [JILA, National Institute of Standards and Technology and University of Colorado, and Department of Physics, University of Colorado, Boulder, Colorado, 80309-0440 (United States); Wanlass, M.W. [National Renewable Energy Laboratory, Golden, Colorado, 80401 (United States)] [National Renewable Energy Laboratory, Golden, Colorado, 80401 (United States)

    1998-11-01T23:59:59.000Z

    In order to increase the radiative efficiency and directivity of spontaneous emission from a lattice-matched InGaAs/InP heterostructure, we have polished the substrate into a parabolic reflector. We combine optical and thermal measurements to obtain the absolute external efficiency over a wide range of carrier densities. Using a simple model, the measurement is used to determine interface, radiative, and Auger recombination rates in the active material. At the optimal density, the quantum efficiency exceeds 60{percent} at room temperature. The divergence of the emitted light is less than 20{degree}. In fact, the beam profile is dominated by a 6{degree} wide lobe that can be swept across the field of emission by changing the excitation position. This suggests a way to create an all-electronic scanned light beam. {copyright} {ital 1998 American Institute of Physics.}

  3. One-wave optical time-reversal mirror by actively coupling arbitrary light fields into a single-mode reflector

    E-Print Network [OSTI]

    Lee, KyeoReh; Park, Jung-Hoon; Park, Ji-Ho; Park, YongKeun

    2015-01-01T23:59:59.000Z

    Rewinding the arrow of time via phase conjugation is an intriguing phenomena made possible by the wave property of light. To exploit this phenomenon, many diverse research fields have pursed the realization of an ideal phase conjugation mirror, but the ideal phase conjugation mirror - an optical system that requires a single-input and a single-output beam, like natural conventional mirrors - has never been demonstrated. Here, we demonstrate the realization of a one-wave optical time-reversal mirror using a spatial light modulator and a single-mode reflector. Our method is simple, alignment free, and fast while allowing unlimited power throughput in the time reversed wave, which have not been simultaneously demonstrated before. Using our method, we demonstrate high throughput time-reversal full-field light delivery through highly scattering biological tissue and multimode fibers, even for quantum dot fluorescence.

  4. Electromagnetic modeling of the energy distribution of a metallic cylindrical parabolic reflector covered with a magnetized plasma layer

    SciTech Connect (OSTI)

    Niknam, A. R., E-mail: a-niknam@sbu.ac.ir; Khajehmirzaei, M. R. [Laser and Plasma Research Institute, Shahid Beheshti University, GC, Tehran (Iran, Islamic Republic of); Davoudi-Rahaghi, B.; Rahmani, Z.; Jazi, B.; Abdoli-Arani, A. [Department of Laser and Photonics, Faculty of Physics, University of Kashan, Kashan (Iran, Islamic Republic of)

    2014-07-15T23:59:59.000Z

    The energy distribution along the focal axis of a long metallic cylindrical parabolic reflector with a plasma layer on its surface in the presence of an external magnetic field is investigated. The effects of some physical parameters, such as the plasma frequency, the wave frequency and the thickness of plasma layer on the energy distribution and the reflected and transmitted electromagnetic fields, are simulated. These investigations for both S- and P-polarizations have been done separately. It is found that the maximum value of the reflected intensity increases by increasing the incident wave frequency and by decreasing the plasma layer thickness and the plasma frequency for both polarizations. Furthermore, the results show that the increase of the magnetic field strength can cause an increase in the reflected intensity for S-polarization and a slight decrease for P-polarization.

  5. Optimal design of one-dimensional photonic crystal back reflectors for thin-film silicon solar cells

    SciTech Connect (OSTI)

    Chen, Peizhuan; Hou, Guofu, E-mail: gfhou@nankai.edu.cn; Zhang, Jianjun, E-mail: jjzhang@nankai.edu.cn; Zhang, Xiaodan; Zhao, Ying [Institute of Photoelectronics and Tianjin Key Laboratory of Photoelectronic Thin-film Devices and Technique, Nankai University, Tianjin 300071 (China)

    2014-08-14T23:59:59.000Z

    For thin-film silicon solar cells (TFSC), a one-dimensional photonic crystal (1D PC) is a good back reflector (BR) because it increases the total internal reflection at the back surface. We used the plane-wave expansion method and the finite difference time domain (FDTD) algorithm to simulate and analyze the photonic bandgap (PBG), the reflection and the absorption properties of a 1D PC and to further explore the optimal 1D PC design for use in hydrogenated amorphous silicon (a-Si:H) solar cells. With identified refractive index contrast and period thickness, we found that the PBG and the reflection of a 1D PC are strongly influenced by the contrast in bilayer thickness. Additionally, light coupled to the top three periods of the 1D PC and was absorbed if one of the bilayers was absorptive. By decreasing the thickness contrast of the absorptive layer relative to the non-absorptive layer, an average reflectivity of 96.7% was achieved for a 1D PC alternatively stacked with a-Si:H and SiO{sub 2} in five periods. This reflectivity was superior to a distributed Bragg reflector (DBR) structure with 93.5% and an Ag film with 93.4%. n-i-p a-Si:H solar cells with an optimal 1D PC-based BR offer a higher short-circuit current density than those with a DBR-based BR or an AZO/Ag-based BR. These results provide new design rules for photonic structures in TFSC.

  6. STARTUP REACTIVITY ACCOUNTABILITY ATTRIBUTED TO ISOTOPIC TRANSMUTATIONS IN THE IRRADIATED BERYLLIUM REFLECTOR OF THE HIGH FLUX ISTOTOPE REACTOR

    SciTech Connect (OSTI)

    Chandler, David [ORNL] [ORNL; Maldonado, G Ivan [ORNL] [ORNL; Primm, Trent [ORNL] [ORNL

    2010-01-01T23:59:59.000Z

    The objective of this study is to develop a methodology to predict the reactivity impact as a function of outage time between cycles of 3He, 6Li, and other poisons in the High Flux Isotope Reactor s (HFIR) beryllium reflector. The reactivity worth at startup of the HFIR has been incorrectly predicted in the past after the reactor has been shut-down for long periods of time. The incorrect prediction was postulated to be due to the erroneous calculation of 3He buildup in the beryllium reflector. It is necessary to develop a better estimate of the start-of-cycle symmetric critical control element positions since if the estimated and actual symmetrical critical control element positions differ by more than $1.55 in reactivity (approximately one-half inch in control element startup position), HFIR is to be shutdown and a technical evaluation is performed to resolve the discrepancy prior to restart. 3He is generated and depleted during operation, but during an outage, the depletion of 3He ceases because it is a stable isotope. 3He is born from the radioactive decay of tritium, and thus the concentration of 3He increases during shutdown. The computer program SCALE, specifically the TRITON and CSAS5 control modules including the KENO V.A, COUPLE, and ORIGEN functional modules were utilized in this study. An equation relating the down time (td) to the change in symmetric control element position was generated and validated against measurements for approximately 40 HFIR operating cycles. The newly-derived correlation was shown to improve accuracy of predictions for long periods of down time.

  7. PALIERS POUR ROTORS TOURNANT A GRANDE VITESSE Par G. GOBERT,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    l'air comprimé comme gaz. Le principe consiste à sépa- rer, par un film gazeux, un plan mobile d atmosphérique aux abords du gicleur, due soit à un écoulement où la vitesse du gaz atteint la célérité locale du turbine (poids = 27 g). ~ b = butée : 4 gicleurs 0 1 mm sur 0 20 mm. 4 gicleurs 0 1 mm sur 0 34 mm. Modèle

  8. Design Studies and Commissioning Plans for PARS Experimental Program

    E-Print Network [OSTI]

    Mete, O; Xia, G; Dover, M; Wigram, M; Wright, J; Zhang, J; Smith, J

    2015-01-01T23:59:59.000Z

    PARS (Plasma Acceleration Research Station) is an electron beam driven plasma wakefield acceleration test stand proposed for VELA/CLARA facility in Daresbury Laboratory. In order to optimise various operational configurations, 2D numerical studies were performed by using VSIM for a range of parameters such as bunch length, radius, plasma density and positioning of the bunches with respect to each other for the two-beam acceleration scheme. In this paper, some of these numerical studies and considered measurement methods are presented.

  9. Optimisation combinatoire Modelisation MIP Sujet 1 : Modelisation par la programmation

    E-Print Network [OSTI]

    Miller, Andrew J.

    discr`ete (par opposition `a continue) Probl`eme d' optimisation : min f (x) s. `a x X o`u l'ensemble X Domaines d'application Industriel Automobile: gestion de la diversit´e Production ´energ´etique , x2 0 x1 , x2 ZZ Classification: Application industrielle. Probl`eme Lin´eaire (facile) en nombres

  10. Regression inverse par tranches sur flux de donnees

    E-Print Network [OSTI]

    Boyer, Edmond

    'un mod`ele semi-param´etrique sous-jacent incluant une direction EDR (Effective Dimension Reduction'il existe une d´erive de la direction EDR ou bien des blocs de donn´ees aberrantes, et nous illustrons notre´eaire engendr´e par : ici dans le cadre d'un mod`ele `a un seul indice, nous parlons de direction EDR

  11. Midtemperature Solar Systems Test Facility predictions for thermal performance based on test data. Alpha Solarco Model 104 solar collector with 0. 125-inch Schott low-iron glass reflector surface

    SciTech Connect (OSTI)

    Harrison, T.D.

    1981-04-01T23:59:59.000Z

    Thermal performance predictions based on test data are presented for the Alpha Solarco Model 104 solar collector, with 0.125-inch Schott low-iron glass reflector surface, for three output temperatures at five cities in the United States.

  12. Analyse Statistique de la Pollution par les PM10 en Haute-Normandie

    E-Print Network [OSTI]

    Boyer, Edmond

    Analyse Statistique de la Pollution par les PM10 en Haute-Normandie Fran¸cois-Xavier Jolloisa travail porte sur l'analyse de la pollution par les particules PM10 en r´egion Haute- Normandie entre 2004´eaires et les m´elanges de mod`eles lin´eaires, on mod´elise les effets des vari- ables sur la pollution par

  13. Fiber optic sensor employing successively destroyed coupled points or reflectors for detecting shock wave speed and damage location

    DOE Patents [OSTI]

    Weiss, Jonathan D. (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    A shock velocity and damage location sensor providing a means of measuring shock speed and damage location. The sensor consists of a long series of time-of-arrival "points" constructed with fiber optics. The fiber optic sensor apparatus measures shock velocity as the fiber sensor is progressively crushed as a shock wave proceeds in a direction along the fiber. The light received by a receiving means changes as time-of-arrival points are destroyed as the sensor is disturbed by the shock. The sensor may comprise a transmitting fiber bent into a series of loops and fused to a receiving fiber at various places, time-of-arrival points, along the receiving fibers length. At the "points" of contact, where a portion of the light leaves the transmitting fiber and enters the receiving fiber, the loops would be required to allow the light to travel backwards through the receiving fiber toward a receiving means. The sensor may also comprise a single optical fiber wherein the time-of-arrival points are comprised of reflection planes distributed along the fibers length. In this configuration, as the shock front proceeds along the fiber it destroys one reflector after another. The output received by a receiving means from this sensor may be a series of downward steps produced as the shock wave destroys one time-of-arrival point after another, or a nonsequential pattern of steps in the event time-of-arrival points are destroyed at any point along the sensor.

  14. Fiber optic sensor employing successively destroyed coupled points or reflectors for detecting shock wave speed and damage location

    DOE Patents [OSTI]

    Weiss, J.D.

    1995-08-29T23:59:59.000Z

    A shock velocity and damage location sensor providing a means of measuring shock speed and damage location is disclosed. The sensor consists of a long series of time-of-arrival ``points`` constructed with fiber optics. The fiber optic sensor apparatus measures shock velocity as the fiber sensor is progressively crushed as a shock wave proceeds in a direction along the fiber. The light received by a receiving means changes as time-of-arrival points are destroyed as the sensor is disturbed by the shock. The sensor may comprise a transmitting fiber bent into a series of loops and fused to a receiving fiber at various places, time-of-arrival points, along the receiving fibers length. At the ``points`` of contact, where a portion of the light leaves the transmitting fiber and enters the receiving fiber, the loops would be required to allow the light to travel backwards through the receiving fiber toward a receiving means. The sensor may also comprise a single optical fiber wherein the time-of-arrival points are comprised of reflection planes distributed along the fibers length. In this configuration, as the shock front proceeds along the fiber it destroys one reflector after another. The output received by a receiving means from this sensor may be a series of downward steps produced as the shock wave destroys one time-of-arrival point after another, or a nonsequential pattern of steps in the event time-of-arrival points are destroyed at any point along the sensor. 6 figs.

  15. Polarity dependence of the electrical characteristics of Ag reflectors for high-power GaN-based light emitting diodes

    SciTech Connect (OSTI)

    Park, Jae-Seong; Seong, Tae-Yeon, E-mail: tyseong@korea.ac.kr [Department of Materials Science and Engineering, Korea University, Seoul 136-713 (Korea, Republic of); Han, Jaecheon [Department of LED Business, Chip Development Group, LG Innotek, Paju 413-901 (Korea, Republic of); Ha, Jun-Seok [School of Applied Chemical Engineering, Chonnam National University, Gwangju 500-757 (Korea, Republic of)

    2014-04-28T23:59:59.000Z

    We report on the polarity dependence of the electrical properties of Ag reflectors for high-power GaN-based light-emitting diodes. The (0001) c-plane samples become ohmic after annealing in air. However, the (11–22) semi-polar samples are non-ohmic after annealing, although the 300?°C-annealed sample shows the lowest contact resistivity. The X-ray photoemission spectroscopy (XPS) results show that the Ga 2p core level for the c-plane samples experiences larger shift toward the valence band than that for the semi-polar samples. The XPS depth profile results show that unlike the c-plane samples, the semi-polar samples contain some amounts of oxygen at the Ag/GaN interface regions. The outdiffusion of Ga atoms is far more significant in the c-plane samples than in the semi-polar samples, whereas the outdiffusion of N atoms is relatively less significant in the c-plane samples. On the basis of the electrical and XPS results, the polarity dependence of the electrical properties is described and discussed.

  16. tion des environs par quatre groupes prin-cipaux de polluants : i) les hydrocarbures

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    tion des environs par quatre groupes prin- cipaux de polluants : i) les hydrocarbures aromatiques simples; ii) les hydrocarbures aliphatiques ; iii) les hydrocarbures aroma- tiques polycycliques (HAP

  17. Text-Alternative Version: L Prize-PAR 38 Competition: A New Start

    Broader source: Energy.gov [DOE]

    Below is the text-alternative version of the "L Prize-PAR 38 Competition: A New Start" webcast, held March 27, 2012.

  18. Institut National Polytechnique de Grenoble No. attribu par la bibliothque

    E-Print Network [OSTI]

    Boyer, Edmond

    'un système de conversion de type VSC-HVDC. Stabilité - Contrôle des perturbations. Directeurs de thèse : M;#12;Table des matières 1 Introduction 17 2 Présentation des systèmes HVDC 25 2.1 Intérêts par rapport à une Modélisation des systèmes VSC-HVDC 31 3.1 Modélisation de la source puissance

  19. The Epic of Pabuji ki par in Performance

    E-Print Network [OSTI]

    Wickett, Elizabeth

    2010-10-19T23:59:59.000Z

    Occasional Paper 3 World Oral Literature Project v o i c e s o f v a n i s h i n g w o r l d s The Epic of Pabuji ki par in performance Elizabeth Wickett Published by: World Oral Literature Project University of Cambridge Museum of Archaeology... and Anthropology Downing Street Cambridge CB2 3DZ United Kingdom email: oralliteratureproject@gmail.com office phone: +44 (0)1223 333508 www.oralliterature.org ISBN: 978-0-9566052-1-4 © 2010 World Oral Literature Project All rights reserved. No parts...

  20. PARS II Enhancements - Igor Pedan, MA-63 | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM PolicyOfEnergyOutreach toOverviewOverview P - .PARS II

  1. Par Pastoril e Agr cola S A | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorthOlympiaAnalysis) JumpPalcan sPaquin Energy and FuelPar

  2. Adsorption du mthanol par la montmorillonite (1) Faza ANNABI-BERGAYA

    E-Print Network [OSTI]

    Boyer, Edmond

    Adsorption du méthanol par la montmorillonite (1) Faïza ANNABI-BERGAYA C.N.R.S., Centre de Cedex. RÉSUMÉ L'adsorption du méthanol gazeux par des montmorillonites Li, Na, Ba et Ca, a été 1. R. Adsorption, Le recoupement des résultats a permis de mettre en évidence les points suivants

  3. REMARQUES SUR LE MMOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    621 REMARQUES SUR LE MÉMOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME. 11 est facile de voir que le plissement des courbes d'aimantation et d'allongement constaté par MM. Nagaoka et Honda et Honda indique un point singulier des alliages, ou s'il s'agit d'un fait fortuit. J'ajou- terai que

  4. REMARQUES SUR LE TRAVAIL DE MM. NAGAOKA ET HONDA ; Par M. CH.-D. GUILLAUME

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    633 REMARQUES SUR LE TRAVAIL DE MM. NAGAOKA ET HONDA ; Par M. CH.-ÉD. GUILLAUME Les recherches de MM. Nagaolia et Honda sur la inagnéto- striction donnent lieu à deux genres de remarques : les unes que pour une proportion insignifiante dans les résultats énoncés par MM. Nagaoka et Honda, et que les

  5. Volatilit du dpt actif du thorium Par T. BARRATT et A. B. WOOD

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    198 Volatilité du dépôt actif du thorium Par T. BARRATT et A. B. WOOD [Woolwich Polytechnic]. Marsden et Darwini avaient proposé pour la série de transformations du thorium A le schéma suivant, Cet et thoriums C faites par Mlle Meitner 2 et Marsden et Wilson3ayant donné des résultats contradictoires, les

  6. MESURE DU PARCOURS MOYEN DES RAYONS 03B1 DU THORIUM PAR LA MTHODE PHOTOGRAPHIQUE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MESURE DU PARCOURS MOYEN DES RAYONS 03B1 DU THORIUM PAR LA MÉTHODE PHOTOGRAPHIQUE Par Mme HENRIETTE thorium dans l'émulsion des plaques photo- graphiques, on déduit leur parcours moyen dans l'air à150 thorium a déjà fait l'objet de plusieurs mesures dont les résultats ne sont pas toujours concordants. Les

  7. PRESSION DE VAPEUR SATURANTE DU LITHIUM ENTRE 462 ET 642 Par Mlle M. MAUCHERAT,

    E-Print Network [OSTI]

    Boyer, Edmond

    d'Imphy) : ce mé- tal résiste très bien à l'action corrosive du lithium, je l'ai adopté aprèsPRESSION DE VAPEUR SATURANTE DU LITHIUM ENTRE 462° ET 642° Par Mlle M. MAUCHERAT, Faculté des Sciences de Marseille. Sommaire. - Dans ce travail on étudie la tension de vapeur saturante du lithium par

  8. Absorption du rayonnement 12 et 8 millimtres par les vapeurs de propane sous pression

    E-Print Network [OSTI]

    Boyer, Edmond

    Absorption du rayonnement 12 et 8 millimètres par les vapeurs de propane sous pression A. Battaglia des pertes diélectriques (03B5") présentées par le propane gazeux aux fréquences de 24 et 36 GHz, à la Birnbaum. Abstract. 2014 Experimental study of dielectric losses (03B5") presented by gaseous propane

  9. Pars Plana Vitrectomy in Eyes Containing a Treated Posterior Uveal Melanoma

    E-Print Network [OSTI]

    Foster, William

    Pars Plana Vitrectomy in Eyes Containing a Treated Posterior Uveal Melanoma WILLIAM J. FOSTER, MD PURPOSE: To determine the safety of pars plana vitrec- tomy in eyes containing a treated posterior uveal treated with 125 I plaque radiotherapy (seven pa- tients) or transpupillary thermotherapy (two patients

  10. Diffraction de Fresnel des electrons diffuss lastiquement et inlastiquement par des crans semi-transparents

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1353 Diffraction de Fresnel des electrons diffusés élastiquement et inélastiquement par des écrans 1980) Résumé. 2014 L'application du principe de Huygens-Fresnel à l'étude de la diffraction par le bord légèrement divergent rend compte de l'allure générale des franges de Fresnel observées en microscopie

  11. EuroPar 2009 POGGI: Puzzle-Based Online Games on Grid Infrastructures POGGI: Puzzle-Based Online Games

    E-Print Network [OSTI]

    Iosup, Alexandru

    : The Lunar Lockout Puzzle Lunar Lockout, Yamamoto & Yoshigahara, 1998 #12;EuroPar 2009 ­ POGGI: Puzzle

  12. CONTRIBUTION A L'AUGMENTATION DE LA SENSIBILIT DES THERMOPILES Par MM. PIERRE BARCHEWITZ et JEAN TURCK.

    E-Print Network [OSTI]

    Boyer, Edmond

    tombant sur la thermopile et dans ce cas, on demande à celle-ci d'avoir un temps de réponse aussi faible- trique, celle-ci s'échauffe, sa température qui était initialement égale à la température To de la rayonnement, par conductibilité calorifique, par convection, par effet Peltier ou effet Joule, il s'établit un

  13. COMPTITION FISSION-SPALLATION DANS LES CIBLES DE THORIUM BOMBARDES PAR PROTONS DE 155 MeV

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    338. COMPÉTITION FISSION-SPALLATION DANS LES CIBLES DE THORIUM BOMBARDÉES PAR PROTONS DE 155 Me isotopes du thorium et de l'actinium, par bombardement de Th 232 par des protons de 155 MeV. Ces sections were made on the formation of several isotopes of thorium, and actinium, by bombarding Th 232 by 155 Me

  14. Meta-compilation non intrusive du filtrage par contraintes Non intrusive meta-compilation of matching by constraints

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    M´eta-compilation non intrusive du filtrage par contraintes Non intrusive meta´eta-compilation non intrusive du filtrage par contraintes Historique 31 ao^ut 2004 V 0.8 cr´eation du document 15 inria-00280939,version1-20May2008 #12;MANIFICO ­ M´eta-compilation non intrusive du filtrage par

  15. Silvered polymer reflectors

    SciTech Connect (OSTI)

    Schissel, P.; Neidlinger, H.H.; Czanderna, A.W.

    1985-03-01T23:59:59.000Z

    One of the principal objectives of the Solar Thermal Research Program is to develop silvered polymer films for constructing durable, low-cost, lightweight concentrating collectors for high temperature solar thermal systems. The mirrors are characterized for their solar-weighted (air mass 1.5) reflectance and exposed to environmental degradation. Photodegradation of polymers has also been studied using Fourier transform infrared spectroscopy supplemented with surface analysis characterization. Results are discussed for extruded films, ultraviolet effects, metallization, and the effects of polymer additives. (LEW)

  16. Extreme ultraviolet reflector

    DOE Patents [OSTI]

    Newnam, Brian E. (Los Alamos, NM)

    1990-01-01T23:59:59.000Z

    A multi-faceted mirror forms a retroreflector for a resonator loop in a free electron laser (FEL) operating in the XUV (.lambda.=10-100 nm). The number of facets is determined by the angle-of-incidence needed to obtain total external reflectance (TER) from the facet surface and the angle through which the FEL beam is to be turned. Angles-of-incidence greater than the angle for TER may be used to increase the area of the beam incident on the surface and reduce energy absorption density. Suitable surface films having TER in the 10-100 nm range may be formed from a variety of materials, including Al, single-crystal Si, Ag, and Rh. One of the facets is formed as an off-axis conic section to collimate the output beam with minimum astigmatism.

  17. Contamination des mollusques bivalves par des phycotoxines : interactions entre niveaux de toxicit et rponses physiologiques

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Contamination des mollusques bivalves par des phycotoxines : interactions entre niveaux de principaux types de phycotoxines peuvent contaminer les mollusques bivalves : les toxines diarrhéiques (DSP nécessite de connaître au préalable les conditions initiales de contamination des mollusques ainsi que les

  18. u.s. Dl!PAR1'M:ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER

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

    PAR1'M:ENT OF ENERGY EERE PROJECT MANAGEMENT CENTER NEPA DETERlIIINATION RECIPIENT :University of California San Diego PROJECT TITL.E: San Diego Center for Algae Biotechnology Page...

  19. LA SARCOSPORIDIOSE DES RUMINANTS AU MAROC ETUDE EPIDEMIOLOGIQUE PAR DEUX TECHNIQUES HISTOLOGIQUES

    E-Print Network [OSTI]

    Boyer, Edmond

    LA SARCOSPORIDIOSE DES RUMINANTS AU MAROC ETUDE EPIDEMIOLOGIQUE PAR DEUX TECHNIQUES HISTOLOGIQUES Agronomique et Vétérinaire Hassan Il. B.P. 704 - Rabat - Agdal. Maroc &dquo; Département de Parasitologie

  20. REMARQUES SUR LE MMOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME.

    E-Print Network [OSTI]

    Boyer, Edmond

    621 REMARQUES SUR LE M�MOIRE DE MM. NAGAOKA ET HONDA; Par CH.-ED. GUILLAUME. 11 est facile de voir que le plissement des courbes d'aimantation et d'allongement constaté par MM. Nagaoka et Honda et Honda indique un point singulier des alliages, ou s'il s'agit d'un fait fortuit. J'ajou- terai que

  1. Sur le parcours des rayons 03B1 de l'uranium Par Lon BLOCH,

    E-Print Network [OSTI]

    Boyer, Edmond

    Sur le parcours des rayons 03B1 de l'uranium Par Léon BLOCH, Agrégé de l'Université de Paris parcours des rayons x de l'uranium a été dé- terminé par Bragg1 au moyen d'une méthode indirecte. Bragg a mesuré l'ionisatiol totale due au rayonnement de l'uranium lorsque la substance est recouverte d

  2. LA GESTION DE L'EAU PAR LES ASSOCIATIONS DE PROPRITAIRES FONCIERS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LA GESTION DE L'EAU PAR LES ASSOCIATIONS DE PROPRI�TAIRES FONCIERS Méthodologie pour un, est posée la question du devenir de ces structures et de leur participation à une gestion de l'eau à gestion à long terme de ces structures et de la ressource en eau, notamment par les acteurs locaux grâce à

  3. GaInAsSb/A1GaAsSb/Sb Thermophotovoltaic Devices With an Internal Back-Surface Reflector Formed by Wafer Bonding

    SciTech Connect (OSTI)

    C.A. Wang; R.K. Huang; D.A. Shiau; M.K. Connors; P.G. Murphy; P.W. O'brien; A.C. Anderson; D.M. DePoy; G. Nichols; M.N. Palmasiano

    2002-12-18T23:59:59.000Z

    A novel implementation for GAInAsSb/AlGaAsSb/GaSb TPV cells with an internal back-surface reflector (BSR) formed by wafer bonding to GaAs is demonstrated. The SiO{sub x}/Ti/Au internal BSR enhances optical absorption within the device, while the dielectric layer provides electrical isolation. This configuration has the potential to improve TPV device performance; is compatible with monolithic series-interconnection of TPV cells for building voltage; and can mitigate the requirements of filters used for front-surface spectral control. At a short-circuit density of 0.4 A/cm{sup 2}, the open-circuit voltage of a single TPV cell is 0.2 V, compared to 0.37 and 1.8 V for 2- and 10-junction series-interconnected TPV cells, respectively.

  4. An efficient light trapping scheme based on textured conductive photonic crystal back reflector for performance improvement of amorphous silicon solar cells

    SciTech Connect (OSTI)

    Chen, Peizhuan; Hou, Guofu, E-mail: gfhou@nankai.edu.cn; Huang, Qian; Zhao, Jing; Zhang, Jianjun, E-mail: jjzhang@nankai.edu.cn; Ni, Jian; Zhang, Xiaodan; Zhao, Ying [Tianjin Key Laboratory of Photoelectronic Thin-Film Devices and Technique, Institute of Photoelectronics, Nankai University, Tianjin 300071 (China); Fan, QiHua [Department of Electrical Engineering and Computer Science, South Dakota State University, Brookings, South Dakota 57007 (United States)

    2014-08-18T23:59:59.000Z

    An efficient light trapping scheme named as textured conductive photonic crystal (TCPC) has been proposed and then applied as a back-reflector (BR) in n-i-p hydrogenated amorphous silicon (a-Si:H) solar cell. This TCPC BR combined a flat one-dimensional photonic crystal and a randomly textured surface of chemically etched ZnO:Al. Total efficiency enhancement was obtained thanks to the sufficient conductivity, high reflectivity and strong light scattering of the TCPC BR. Unwanted intrinsic losses of surface plasmon modes are avoided. An initial efficiency of 9.66% for a-Si:H solar cell was obtained with short-circuit current density of 14.74?mA/cm{sup 2}, fill factor of 70.3%, and open-circuit voltage of 0.932?V.

  5. Laser damage study of nodules in electron-beam-evaporated HfO{sub 2}/SiO{sub 2} high reflectors

    SciTech Connect (OSTI)

    Cheng Xinbin; Shen Zhengxiang; Jiao Hongfei; Zhang Jinlong; Ma Bin; Ding Tao; Lu Jiangtao; Wang Xiaodong; Wang Zhanshan

    2011-03-20T23:59:59.000Z

    A reactive electron beam evaporation process was used to fabricate 1.064 {mu}mHfO{sub 2}/SiO{sub 2} high reflectors. The deposition process was optimized to reduce the nodular density. Cross-sectioning of nodular defects by a focused ion-beam milling instrument showed that the nodule seeds were the residual particles on the substrate and the particulates from the silica source ''splitting.'' After optimizing the substrate preparation procedure and the evaporation process, a low nodular density of 2.7/mm{sup 2} was achieved. The laser damage test revealed that the ejection fluences and damage growth behaviors of nodules created from deep or shallow seeds were totally different. A mechanism based on directional plasma scald was proposed to interpret observed damage growth phenomenon.

  6. A review of "La Rochefoucauld par quatre chemins. Les Maximes et leurs ambivalence" by Eric Turcat

    E-Print Network [OSTI]

    Grele, Denis D.

    2014-01-01T23:59:59.000Z

    82 seventeenth-century news Eric Turcat. La Rochefoucauld par quatre chemins. Les Maximes et leurs ambivalence. Biblio 17, v. 206. Tübingen: Gunter Narr Verlag, 2013. 220 pp. ISBN 978-63-8233-6803-8. $65.91. Review by denis d. grélé, university...(s). For his part, Eric Turcat does not recoil from the challenge and offers in La Rochefoucauld par quatre chemins, not one but four possible methods of understanding apparent disparate fragments of thoughts. Each chapter of his book is devoted to one...

  7. Rglage du PID numrique par rduction de la complexit du rgulateur

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Réglage du PID numérique par réduction de la complexité du régulateur Zito Gianluca*, Landau Ioan procédure de synthèse des régulateurs PID numériques pour les systèmes d'ordre élevé est présentée. Cette modèle du système. L'estimation des paramètres du PID est faite par un algorithme du type identication en

  8. Le hakka, par Hilary Chappell et Laurent Sagart Le dialecte hakka est parl par quelque 35 millions de locuteurs, principalement dans le nord du

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    répandu hors de Chine, en particulier en Malaisie, dans le nord de Bornéo, en Guyane, au Surinam et à ont pu entraîner une forte animosité avec les populations chinoises plus anciennement établies. Cette («Puntis») dans la province de Canton. Méprisés par la société cantonaise, et assimilés aux She, population

  9. Les agricultures familiales refltent une trs grande diversit. Elles se caractrisent par une multitude de techniques, une richesse de savoir-faire et par une savante combinaison

    E-Print Network [OSTI]

    'arganiers, région de Tafraout, Maroc L'agriculture familiale ne saurait se passer de l'arbre et de la forêt. �pineux endémique du Maroc, l'arganier est parfaitement adapté à l'aridité. Les hommes ne le plantent pas mais 1998 « réserve de la biosphère » par l'Unesco. ©IRD-GenevièveMichon MAROC Les agricultures familiales

  10. TUDE DU FACTEUR DE MULTIPLICATION DANS LA PILE DE SACLAY Par B. JACROT, F. NETTER et V. RAIEVSKI,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    31 ÉTUDE DU FACTEUR DE MULTIPLICATION DANS LA PILE DE SACLAY Par B. JACROT, F. NETTER et V facteur de multiplication effectif dans une pile,par des expériences en régime sous-critique. Ces méthodes sont appliquées à la déter- mination de l'effet sur la réactivité de différents paramètres de la pile

  11. LA DISTILLATION a t introduite en Occident avec l'alchimie au cours du XIIe sicle. Par convention, on

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LA DISTILLATION a été introduite en Occident avec l'alchimie au cours du XIIe siècle. Par Pseudo-Geber, distingue plusieurs façons de distiller et propose même une classi- fication de ces distillat (per descensum). La distillation par élévation des vapeurs, ou per ascensum, nécessite l

  12. LA RPARTITION DE L'OZONE ATMOSPHRIQUE EN FONCTION DE L'ALTITUDE Par M. D. BARBIER.

    E-Print Network [OSTI]

    Boyer, Edmond

    LA RÉPARTITION DE L'OZONE ATMOSPHÉRIQUE EN FONCTION DE L'ALTITUDE Par M. D. BARBIER. Observatoire observations en déter- minant la distribution de l'ozone par une série de Charlier du type A. En général on ne peut déterminer que la quantité totale d'ozone et la hauteur moyenne de la distribution, ces quantités

  13. Vers une formule de Stirling de la factorielle de Bhargava pour des entiers reconnaissables par un automate

    E-Print Network [OSTI]

    Dumont, Serge

    Vers une formule de Stirling de la factorielle de Bhargava pour des entiers reconnaissables par un¸con intrins`eque en th´eorie des nombres. Ainsi l'estimation de cette fonction par la formule de Stirling se r savoir quel est l'analogue de la formule de Stirling pour un sous ensemble E ? Quels sont les propri

  14. Grant Title: INITIATIVE FOR MAXIMIZING STUDENT DEVELOPMENT (IMSD) (R25) Funding Opportunity Number: PAR-13-082. CFDA Number(s): 93.859.

    E-Print Network [OSTI]

    Farritor, Shane

    : PAR-13-082. CFDA Number(s): 93.859. Agency/Department: National Institutes of Health (NIH), National

  15. MESURE DES INTENSITS PAR CEINTURE DE ROGOWSKI UTILISATION D'UNE SPIRE COMPENSATRICE

    E-Print Network [OSTI]

    Boyer, Edmond

    , specially in gaseous dis- charge, with « Rogowski belt » placed around conductor. The presence mesurer I (fig. 1). Le flux FIG. 1. de l'induction=Bo créé par ce courant, à travers les spires de l de la valeur de l'induction magnétique en tout point, le vecteur induction conservant toujours. une

  16. Dimensionnement et gestion d'un systme de stockage thermique par hydro-accumulation : application la

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Dimensionnement et gestion d'un système de stockage thermique par hydro-accumulation : application de stockage thermique de type hydro-accumulation destiné à une chaufferie collective multi, mix-énergétique, stockage thermique, hydro-accumulation, dimensionnement optimal, gestion, graphe d

  17. SUR LA CAUSE DE L'LECTRISATION DES NUAGES ORAGEUX; PAR M. H. PELLAT.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Peltier a admis, pour expliquer les phé- nomènes électriques dont notre atmosphère est le siège, que le Peltier, qui est, non une hypothèse, mais bien une réalité. On sait, en effet, que par le beau temps le milieu isolant augmente en s'éloignant de la surface d'un conducteur, celle-ci est chargée d

  18. Louvain-la-Neuve, le 27 janvier 2011 Hunza ! : images du Pakistan, par Benoit Sneessens

    E-Print Network [OSTI]

    Nesterov, Yurii

    Louvain-la-Neuve, le 27 janvier 2011 « Hunza ! » : images du Pakistan, par Benoit Sneessens Du 1er trois ans, l'artiste a parcouru à pieds les sentiers escarpés de la vallée de Hunza, au Nord du Pakistan reportages à l'étranger, s'envole pour le Pakistan. Le but de son expédition : confronter l'image du pays

  19. LES GRANDEURS CARACTRISTIQUES DE LA PILE DE CHATILLON (1) Par L. KOWARSKI.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    751. LES GRANDEURS CARACTÉRISTIQUES DE LA PILE DE CHATILLON (1) Par L. KOWARSKI. Laboratoire du de la pile de Châtillon : cuve à eau lourde, barres actives contenant de l'oxyde d'uranium, bloc régime actuel de fonctionnement de la pile ainsi que la puissance qu'elle développe. Il termine en

  20. MESURE DES RACTIVITS DANS UNE PILE (1) Par JACQUES BERNOT et VICTOR RAIEVSKI,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    359. MESURE DES RÉACTIVITÉS DANS UNE PILE (1) Par JACQUES BERNOT et VICTOR RAIEVSKI, Service de la Pile de Saclay, Commissariat à l'Énergie atomique. Sommaire. 2014 Nous reprenons ici de façon plus'une pile. Cette méthode de comptage, appliquée à une pile essentiellement sous-critique, nécessite la

  1. DISTILLATION DES LIQUIDES SOUS L'INFLUENCE DE L'LECTRICIT STATIQUE; PAR M. D. GERNEZ.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    36I DISTILLATION DES LIQUIDES SOUS L'INFLUENCE DE L'ÉLECTRICITÉ STATIQUE; PAR M. D. GERNEZ. La décharge, la distillation se produit aussitôt en sens in- verse (2). Ce phénomène est extrêmemen t n e sens suivant lequel se produit cette distillation est contraire à celui que sem- bleraient indiquer les

  2. Friction dependence of shallow granular flows from discrete par-ticle simulations

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    Friction dependence of shallow granular flows from discrete par- ticle simulations Anthony Thornton relation for the macroscopic bed friction or basal roughness obtained from micro-scale discrete particle simulations of steady flows. We systematically vary the bed friction by changing the contact friction

  3. ED n364 : Sciences Fondamentales et Appliques Nattribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    NUMERIQUE DU SOUDAGE PAR FROTTEMENT-MALAXAGE NUMERICAL SIMULATION OF THE FRICTION STIR WELDING PROCESS,version1-8Apr2008 #12;- 4 - ABSTRACT Despite considerable interests in the Friction Stir Welding (FSW the different stages of the Friction Stir Welding (FSW) process. A splitting method is utilized: a) the material

  4. Digestion des glucides cytoplasmiques de la fverole par le veau prruminant

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Digestion des glucides cytoplasmiques de la féverole par le veau préruminant J. M. BESLE B. LASSALAS, P. THIVEND Laboratoire de la Digestion des Ruminants, LN.R.A. Theix 63110 Beaumont France. Summary. Digestion of field bean cytoplasmic carbohydrates by the preruminant calf. Three veal calves

  5. Digestion des glucides de la levure d'alcanes par le veau prruminant

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Digestion des glucides de la levure d'alcanes par le veau préruminant J. M. BESLE, Bernadette LASSALAS, P. THIVEND Laboratoire de la Digestion des Ruminanfs, 1.N.R.A., Theix, 63110 Beaumont France. Summary. Digestion of alkane yeast carbohydrates by the preruminant calf. Four 15-day old preruminant

  6. Action de l'manation du radium sur les sels de thorium Par HERCHFINKEL

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    417 Action de l'émanation du radium sur les sels de thorium Par HERCHFINKEL [Faculté des Sciences'une solution d'azotate de thorium abandonnée a elle-même pendant plusieurs mois dégage une cer- taine quantité'on fait agir une forte quantité d'émanation de radium sur le même sPl de thorium il se produit en- core

  7. LES NEUTRONS DE FISSION ET LA RACTION EN CHAINE Par L. KOWARSKI.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    neutrons lors de la fission de l'uranium (Collège de France, mars1939, et Columbia University), à la, dont l'exploration fut la première étape dans la marche vers la conquête de l'énergie 'atomique. C et complétée par Frisch et Joliot, de la fission de l'uranium. Cette réaction, exothermique à un

  8. Jules Diawara, cole Centrale Paris (Laboratoire de Gnie des Procds et Matriaux) prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Jules Diawara, École Centrale Paris (Laboratoire de Génie des Procédés et Matériaux) 1 présentée par Jules Diawara Pour l'obtention du grade de Docteur de l'École Centrale des Arts et Manufactures tel-00658768,version1-11Jan2012 #12;Jules Diawara, École Centrale Paris (Laboratoire de Génie des

  9. Elaboration de pices micro composites hautes caractristiques mcaniques par fabrication additive (SLM) en conditions ractives

    E-Print Network [OSTI]

    Jeanjean, Louis

    fabrication additive (fabrication rapide) par fusion laser d'un lit de poudre (Selective Laser Melting ou SLM laser melting, fusion laser, métallurgie des poudres, réactions métal-gaz, composites. #12;Profil requis thermodynamique et cinétique réactionnelles sera encouragée. Mots clefs : Fabrication additive, SLM, selective

  10. Paternal age related schizophrenia (PARS): latent subgroups detected by k-means clustering analysis

    E-Print Network [OSTI]

    Ahn, Hongshik

    1 Paternal age related schizophrenia (PARS): latent subgroups detected by k-means clustering of schizophrenia with distinct etiology, pathophysiology and symptoms. This study uses a k-means clustering-R) and olfaction (University of Pennsylvania Smell Identification Test; UPSIT). We conducted a series of k-means

  11. OBSERVATION PAR MICROSCOPIE LECTRONIQUE D'AMAS DE LACUNES DANS LE NICKEL TREMP

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    285 OBSERVATION PAR MICROSCOPIE ÉLECTRONIQUE D'AMAS DE LACUNES DANS LE NICKEL TREMPÉ G. LOZES (1 décembre 1970) Résumé. 2014 Des échantillons de nickel de haute pureté ont été étudiés, après trempe, à la, dans le nickel, une forte tendance à l'agglomération, et qu'en dehors des amas visibles, il se forme d

  12. HISOIRE DU RSEAU DE L'INSERTION PAR L'ACTIVIT CONOMIQUE Philippe Brgeon

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    « Le travail du social » dirigée par Alain Vilbrod, aux éditions l'Harmattan Il s'appuie sur un travail'insertion ?, Les éditions l'harmattan (Ed.) (2008) 276" #12;2 2 de vue du nombre de salariés en insertion concernés

  13. CMENTATION DU NIOBIUM PAR DES SILICIURES DE TITANE ET DE CHROME EN VUE DE RALISER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    551 CÉMENTATION DU NIOBIUM PAR DES SILICIURES DE TITANE ET DE CHROME EN VUE DE RÉALISER DES of titanium 2014 and chromium modified silicide coatings suitable for oxidation protection of niobium. One, susceptibles de protéger le niobium et ses alliages contre l'oxydation. Le disiliciure de niobium pur n

  14. BALAYAGE THERMIQUE DES ANNEAUX DE PEROT ET FABRY Par J. ROIG,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    is heated by a coil wound on the circumference, the required power being a few watts. The mounting is rigid. Résumé. - I. Récepteur photographique. - Une image du. diamètre des anneaux se forme sur la plaque. La. Une came de forme géométrique simple, commandée par un moteur synchrone, agit sur le rhéostat de

  15. ACARYOCHLORIS EXPLAINING THE RIDDLE OF CHLOROPHYLL D IN RED ALGAE AND EXPANDING PAR FOR OXYGENIC PHOTOSYNTHESIS

    E-Print Network [OSTI]

    Oregon, University of

    ACARYOCHLORIS ­ EXPLAINING THE RIDDLE OF CHLOROPHYLL D IN RED ALGAE AND EXPANDING PAR FOR OXYGENIC strain is shown to live epi- phytically on the red alga Gelidium caulacantheum, which itself is harvested by the red alga. Availability of far red light, however, is relatively unaffected by DOM or red

  16. LED Lighting Flicker and Potential Health Concerns: IEEE Standard PAR1789 Update

    E-Print Network [OSTI]

    Lehman, Brad

    LED Lighting Flicker and Potential Health Concerns: IEEE Standard PAR1789 Update Arnold Wilkins for mitigating health risks to viewers" has been formed to advise the lighting industry, ANSI/NEMA, IEC, EnergyStar and other standards groups about the emerging concern of flicker in LED lighting. This paper introduces

  17. PArAmedic AcAdemy College of Rural and Community Development

    E-Print Network [OSTI]

    Hartman, Chris

    PArAmedic AcAdemy College of Rural and Community Development Community and Technical College 907-455-2895 www.ctc.uaf.edu/programs/paramedic/ The paramedic academy prepares students to take the national para Medical Board. The paramedic academy offers the highest level of education avail- able to prepare for work

  18. La reprsentationdescauses de l'tat de sant par les infirmiers etlespointsde vueenvisagsdespatientset desaidantsnaturels

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    La représentationdescauses de l'état de santé par les infirmiers etlespointsde la représentation d'infirmiers hospitaliers expérimentés (n=44) et les différences de points de vue dans la relation soignant-soigné, nous faisons d'une part l'hypothèse que ces infirmiers exhiberont une

  19. Conception centree utilisateur de prototypes interactifs pour la gestion de contenu multimedia par similarite

    E-Print Network [OSTI]

    Dupont, Stéphane

    Conception centr´ee utilisateur de prototypes interactifs pour la gestion de contenu multimedia par de donn´ees mul- timedia, adapt´ees `a des cas d'utilisation divers et pro- fils d'utilisateurs vari similaire? L'interface utilisateur au service des cas d'utilisation La navigation et manipulation de

  20. LA GESTION DE RESULTAT PAR LES MONTAGES FINANCIERS DE TITRISATION : LE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 LA GESTION DE RESULTAT PAR LES MONTAGES FINANCIERS DE TITRISATION : LE CAS DES SOCIETES FRAN�AISES COTEES Patrick BOISSELIER Professeur des universités Conservatoire National des Arts et Métiers gestion Centre de Recherche en Ingénierie Financière et Finances publiques (Université de Nice

  1. Gestion de la Qualit de Service par les Hypercubes dans un Environnement

    E-Print Network [OSTI]

    Boyer, Edmond

    Gestion de la Qualité de Service par les Hypercubes dans un Environnement de Routage Multipoint : Cas des Protocoles PIM-SM et MPLS Mohamed Dafir ECH-CHERIF EL KETTANI Ecole Nationale Supérieure d mettre en °uvre une politique efficace de gestion de la Qualité de Service liée au groupe. Dans cet

  2. DIFFUSION ELASTIQUE DES NEUTRONS PAR LE TRITIUM A 14 MeV

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    DIFFUSION ELASTIQUE DES NEUTRONS PAR LE TRITIUM A 14 MeV Laboratoire de Neutronique, CNRS, Toulouse of neutrons from tritium is studied with a thin scatterer close to a Cs1 scintillator. The experimental. Le diffuseur utilisé est une cible mince contenant 2,22 an3 de tritium absorbé dans une épaisseur de

  3. Sur le rapport isoperimetrique du tetra`edre par Jean-Pierre Demailly

    E-Print Network [OSTI]

    Demailly, Jean-Pierre

    Sur le rapport isop´erim´etrique du t´etra`edre par Jean-Pierre Demailly Professeur `a l triangle ABC, comment choisir le quatri`eme sommet D de fa¸con que le rapport isop´erim´etrique du t´etra`edre´egalit´es contradictoires 0 = - µ + edre

  4. The role of uPAR signaling in lung cancer Background and significance

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    The role of uPAR signaling in lung cancer Background and significance Lung cancer is the leading of lung cancer ­ non-small-cell-lung cancer (about 85% of all lung cancer cases) and small- cell-lung cancer (about 15%) (Herbst et al., 2008). Small cell lung carcinoma (SCLC) is rapidly growing and often

  5. Projet Autoroutier Pilote Aubonne -Belmont pour une Initiative Lausannoise d'Evaluation par Simulation

    E-Print Network [OSTI]

    Bierlaire, Michel

    par Simulation Simulation-based evaluation of the impact of telematics in the Lausanne area: a pilot, either on the efficiency of the road network or the security of its users. The PAPABILES pilot of the network, using a state- of-the-art simulation tool (MITSIM), developed at the Massachusetts Institute

  6. Project Plan 7930 Cell G PaR Remote Handling System Replacement

    SciTech Connect (OSTI)

    Kinney, Kathryn A [ORNL

    2009-10-01T23:59:59.000Z

    For over 40 years the US Department of Energy (DOE) and its predecessors have made Californium-252 ({sup 252}Cf) available for a wide range of industries including medical, nuclear fuels, mining, military and national security. The Radiochemical Engineering Development Center (REDC) located within the Oak Ridge National Laboratory (ORNL) processes irradiated production targets from the High Flux Isotope Reactor (HFIR). Operations in Building 7930, Cell G provide over 70% of the world's demand for {sup 252}Cf. Building 7930 was constructed and equipped in the mid-1960s. Current operations for {sup 252}Cf processing in Building 7930, Cell G require use of through-the-wall manipulators and the PaR Remote Handling System. Maintenance and repairs for the manipulators is readily accomplished by removal of the manipulator and relocation to a repair shop where hands-on work can be performed in glove boxes. Contamination inside cell G does not currently allow manned entry and no provisions were created for a maintenance area inside the cell. There has been no maintenance of the PaR system or upgrades, leaving operations vulnerable should the system have a catastrophic failure. The Cell G PaR system is currently being operated in a run to failure mode. As the manipulator is now 40+ years old there is significant risk in this method of operation. In 2006 an assessment was completed that resulted in recommendations for replacing the manipulator operator control and power centers which are used to control and power the PaR manipulator in Cell G. In mid-2008 the chain for the bridge drive failed and subsequent examinations indicated several damaged links (see Figure 1). To continue operations the PaR manipulator arm is being used to push and pull the bridge as a workaround. A retrieval tool was fabricated, tested and staged inside Cell G that will allow positioning of the bridge and manipulator arm for removal from the cell should the PaR system completely fail. A fully functioning and reliable Par manipulator arm is necessary for uninterrupted {sup 252}Cf operations; a fully-functioning bridge is needed for the system to function as intended.

  7. aluminates: Topics by E-print Network

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

    Zone Physics Websites Summary: -rich coatings, along with the more soluble precipitated uranyl carbonates and uranophane, likely control) in the 300 Area included Cu (50 tons),...

  8. Reactive Air Aluminizing - Energy Innovation Portal

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaising funds forAdvanced Materials Advanced

  9. CALiPER Report 20.1: Quality of Beam, Shadow, and Color in LED PAR38 Lamps

    Broader source: Energy.gov [DOE]

    View the video about CALiPER Report 20.1 which focuses on human-evaluated characteristics, including beam quality, shadow quality, and color quality in LED PAR38 lamps.

  10. RUTILIUS, LECTEUR CRITIQUE DE CLAUDIEN POETE L'intertexte virgilien et sa rception. Textes rassembls par Christina

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    réception. Textes rassemblés par Christina Filoche », Mémoire, discours, images, EAD 1865, Dijon, 2007, p'intertexte virgilien et sa réception., C. Filoche (Ed.) (2007) 158-183" #12;Or ce n'est pas le cas chez Rutilius, qui

  11. PHNOMNES DITS HYDRO-LECTRIQUES ET HYDROMAGNTIQUES; PAR M. C.-A. BJERKNES (1),

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    509 PH�NOM�NES DITS HYDRO-�LECTRIQUES ET HYDROMAGN�TIQUES; PAR M. C.-A. BJERKNES (1), Professeur à corps hydro- électrisés s'attirent ou se repoussent, suivant que leurs vibrations sont concordantes ou- minuent en même temps). Un hydro-aimant, formé ou bien d'une splzère oscillante ou de deux pulsateurs

  12. CONCEPTION OPTIMALE DES SYSTEMES INSTRUMENTS DE SECU RIT : UNE APPROCHE PAR LES BLOCS DIAGRAMMES DE FIABILIT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    par les normes de sécurité IEC 61508 et IEC 61511. L'étude proposée s'inscrit dans le contexte de l conception d'un SIS, utilisé dans le document ISATR84.00.022002 relatif à la norme IEC 61508, qui doit les SIS, deux normes de sécurité sont utilisées : l'IEC 61508 (IEC61508, 1998) et l'IEC 61511 (IEC

  13. La pollution marine est gnralement provoque par les eaux uses, d'origines

    E-Print Network [OSTI]

    La pollution marine est généralement provoquée par les eaux usées, d'origines domestiques long des bassins-versants qui débouchent sur la mer. Pollution marine 16 Métaux Ils présentent trois indique généralement l'existence d'autres sources de pollution. © Ssuaphoto / Dreamstime.com © Uatp1

  14. EFFETS DES FAIBLES IRRADIATIONS SUR L'URANIUM Par Y. QUR,

    E-Print Network [OSTI]

    Boyer, Edmond

    489. EFFETS DES FAIBLES IRRADIATIONS SUR L'URANIUM Par Y. QU�R�, Centre d'�tudes Nucléaires de fragments de fission dans l'uranium, on présente quelques résultats de mesure de longueur et de résistivité modifiés. Abstract. 2014 After recalling Brinkman's model for the action of fission fragments on uranium

  15. rsistances trouves semblent dpendre de la rsistance de la pile; on les limine par divers procds, et notamment en renver-

    E-Print Network [OSTI]

    Boyer, Edmond

    501 résistances trouvées semblent dépendre de la résistance de la pile; on les élimine par divers procédés, et notamment en renver- sant le sens du courant de pile. G. LIPPAMANN R.-T. GLAZEBROOK. 2014 un même pôle de la pile par les deux condensateurs à comparer ; il y a équilibre dans le pont, au

  16. REACTIONS (p, 2pxn) SUR LE THORIUM 232 DE 30 A 120 MeV Par HENRI GAUVIN,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    836. REACTIONS (p, 2pxn) SUR LE THORIUM 232 DE 30 A 120 MeV Par HENRI GAUVIN, Laboratoire Joliot isotopes 224, 225, 226, 227, 228 de l'actinium dans le thorium 232 bombardé par des protons de 30 à 120 Me (224 to 228) in the bombardment of thorium 232 with 30 to 120 MeV protons. In the low energy range (30

  17. UNE SOURCE DE LUMIRE POUR LE DOSAGE ISOTOPIQUE DE L'URANIUM PAR SPECTROMTRIE D'MISSION

    E-Print Network [OSTI]

    Boyer, Edmond

    65 A. UNE SOURCE DE LUMI�RE POUR LE DOSAGE ISOTOPIQUE DE L'URANIUM PAR SPECTROM�TRIE D'�MISSION Par tétrachlorure ou au tétraiodure d'uranium qui émettent le spectre optique de l'uranium avec une intensité, une de routine. Abstract. 2014 A process is described for producing and exciting electrodeless uranium

  18. K-Area and Par Pond Sewage Sludge Application Sites groundwater monitoring report: Second quarter 1993

    SciTech Connect (OSTI)

    Not Available

    1993-10-01T23:59:59.000Z

    During second quarter 1993, samples from the three monitoring wells at the K-Area site (KSS series) and the three monitoring wells at the Par Pond site (PSS series) were analyzed for constituents required by South Carolina Department of Health and Environmental Control Construction Permit 13,173 and for other constituents as part of the Savannah River Site (SRS) Groundwater Monitoring Program. This report describes monitoring results that exceeded the final Primary Drinking Water Standards (PDWS) or the SRS flagging criteria. During second quarter 1993, no constituents exceeded the final PDWS or any other flagging criteria at the K-Area and Par Pond Sewage Sludge Application Sites. During first quarter 1993, aluminum and iron exceeded the SRS Flag 2 criteria in one or more of the KSS and the PSS wells. These constituents were not analyzed second quarter 1993. In the KSS well series, the field measurement for alkalinity ranged as high as 35 mg/L in well KSS 1D. Alkalinity measurements were zero in the PSS wells, except for a single measurement of 1 mg/L in well PSS 1D. Historical and current water-level elevations at the K-Area Sewage Sludge Application Site indicate that the groundwater flow direction is south to southwest (SRS grid coordinates). The groundwater flow direction at the Par Pond Sewage Sludge Application Site could not be determined second quarter 1993.

  19. Deployable Synthetic Aperture Radar Reflector

    E-Print Network [OSTI]

    Pellegrino, Sergio

    ) satellite. The structure consists of four cylindrical surfaces formed from thin sheets of carbon-fibre-reinforced-plastic (CFRP) connected by flexible hinges along the edges. The key to forming a cylindrical surface with any. At full scale the reflective surface will be 7.9 m long by 3.2 m wide, and it has been estimated

  20. Grant Title: NIDCD PHASE I/II PRELIMINARY CLINICAL TRIALS IN COMMUNICATION DISORDERS Funding Opportunity Number: PAR-12-123. CFDA Number(s): 93.173.

    E-Print Network [OSTI]

    Farritor, Shane

    Opportunity Number: PAR-12-123. CFDA Number(s): 93.173. Agency/Department: National Institutes of Health (NIH

  1. Grant Title: MENTAL HEALTH RESEARCH DISSERTATION GRANT TO INCREASE DIVERSITY (R36) Funding Opportunity Number: PAR-12-103. CFDA Number(s): 93.242.

    E-Print Network [OSTI]

    Farritor, Shane

    Opportunity Number: PAR-12-103. CFDA Number(s): 93.242. Agency/Department: Department of Health and Human

  2. Grant Title: BEHAVIORAL SCIENCE TRACK AWARD FOR RAPID TRANSITION (B/START) (R03) Funding Opportunity Number: PAR-12-251. CFDA Number(s): 93.279.

    E-Print Network [OSTI]

    Farritor, Shane

    Opportunity Number: PAR-12-251. CFDA Number(s): 93.279. Agency/Department: Department of Health and Human

  3. Rsum -Les films amorphes GeSe-j vapors obliquement ont une structure colonnaire trs marque. La contraction induite par photo-irradiation a t

    E-Print Network [OSTI]

    Boyer, Edmond

    -induced contraction of a-GeSe3 films has been studied with small-angle neutron scattering and scanning electron/. On illumination the films densify, and a previous small-angle neutron scattering (SANS) study /3/ showed. La contraction induite par photo-irradiation a été étudiée par diffusion des neutrons aux petits

  4. The role of uPAR in inducing a cancer stem cell-like phenotype in breast cancer and allowing cells to develop endocrine therapy resistance

    E-Print Network [OSTI]

    Eastman, Boryana M.

    2012-01-01T23:59:59.000Z

    1-1. uPAR over-expression in MDA-MB- 468 cells induces CSC-and prevents apoptosis in MDA-MB-231 breast cancer cells. J1. uPAR over-expression in MDA-MB-468 cells induces CSC-like

  5. FOURNET, M. & BEDIN, V. (1998). L'ingnierie de formation entre traditionalisme et modernisme ; les nouvelles formes de formation continue vues par des dirigeants de PME-PMI. Formation Emploi, n 63, 43-

    E-Print Network [OSTI]

    Boyer, Edmond

    1998-01-01T23:59:59.000Z

    ; les nouvelles formes de formation continue vues par des dirigeants de PME-PMI. Formation Emploi, n° 63 modernisme Les nouvelles formes de formation continue vues par des dirigeants de PME-PMI Michel Fournet et

  6. L'agriculture familiale se dfinit par le recours quasi-exclusif du travail familial, sans sa-laris permanents,et par des interrelations fortes entre les agriculteurs et leur exploitation.Le

    E-Print Network [OSTI]

    1 #12;L'agriculture familiale se définit par le recours quasi-exclusif à du travail familial, sans agricultures familiales. Avec ses 500 millions d'exploitations, elles font vivre 2,6 milliards de personnes et, les agricultures familiales sont présentes sur tous les continents et dans tous les écosystèmes. Cette

  7. Les rotations positives donnent, toutes choses gales d'ailleurs, une dflexion plus grande et par consquent une plus petite

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On an electrostatic field produced by varying magnetic induction (Champ électrostatique produit par une induction communication avec les pôles d'une batterie d'accumulateurs dont le milieu est au sol. Quand Article published'une sorte de gélatine qui, d'après l'auteur, conduit juste assez pour prendre une charge sta- tique, trop

  8. sonde) (1). Lia, sonde contient un petit compteur de Geiger-Mller aliment par une pile de 75o V,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    78 A sonde) (1). Lia, sonde contient un petit compteur de Geiger-Müller alimenté par une pile de 75o V, en parallèle avec un condensateur de 25 00o pF; l'appareil est donc autonome. Les piles cet appareil, des piles ayant des éléments (1) Modèle du Commissariat à l'Énergie atomique. de 0 = 2I

  9. PROBLMES POSS PAR S SOUTERRAINES PROFONDES Laboratoire de Mcanique des Solides, Ecole Polytechnique, 91 128 Palaiseau Cedex.

    E-Print Network [OSTI]

    Boyer, Edmond

    - considérablement développée. Elle concerne des produits entreposés de façon provisoire (hydrocarbures, air comprimé utilisées pour le stockage des hydrocarbures. Ce ne sont pas les ouvrages qui posent les problèmes les plus la saumure formée est remplacée par des hydrocarbures, figure 1. Leur profondeur varie de 200 à 2000

  10. MATERIAUX 2010 18-22 octobre 2010 Nantes, France Nanostructures originales obtenues par dcomposition catalytique d'hydrocarbure

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    décomposition catalytique d'hydrocarbure M.C. Amamra 1 , J-M. Lihrmann 2 , A. Thorel 3 1 LIMHP-CNRS, Av. J RESUME: L'arc électrique et la décomposition catalytique d'hydrocarbures peuvent produire diverses par décomposition catalytique d'hydrocarbures, ainsi que des fibrilles de quelques nanomètres de

  11. Nonlinear Dual Mode Adaptive Control of PAR2 : a 2-dof Planar Parallel manipulator, with Real-time experiments

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Nonlinear Dual Mode Adaptive Control of PAR2 : a 2-dof Planar Parallel manipulator, with Real with nonlinear dual mode adap- tive control of a redundant manipulator for a pick-and- place scenario with high-time experiments show the performance improvements obtained by the proposed control approach in comparison

  12. DOE Publishes CALiPER Report on Dimming, Flicker, and Power Quality Characteristics of LED PAR38 Lamps

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's CALiPER program has released Report 20.2, which is part of a series of investigations on LED PAR38 lamps. Report 20.2 focuses on dimming, flicker, and power quality...

  13. Oui, Monsieur Vonglis, l'tat, c'tait bien lui ! Mais quel tat ? Par Isabelle STOREZ-BRANCOURT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    éditions L'Harmattan, une mise au point roborative sur la monarchie absolue1 . Mise au point, en effet Bourbons ­ n'est pas une royauté limitée par un 1 Bernard Vonglis, La monarchie absolue française, L'Harmattan

  14. Enjeux et limites du pilotage par les indicateurs en management public, l'exemple de la recherche

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'appeler le New Public Management (NPM dans la suite du texte, traduit en français par Nouvelle Gestion dangereux d'une telle croyance. Nous avons pris ici le parti, non pas de mener une critique globale du NPM

  15. ED no 432 : "Science des Metiers de l'Ingenieur" no attribue par la biblioth`eque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ED no 432 : "Science des M´etiers de l'Ing´enieur" no attribu´e par la biblioth . . .University of Applied Sciences Magdeburg-Stendal . . .Rapporteur Pr. Zhaoxin Laurent Li scientifiques et techniques, la disponibilit´e, l'atmosph`ere conviviale qui est si bien entretenue. J

  16. Dlivr par l'Universit Paul-Valry-Montpellier 3 Prpare au sein de l'cole doctorale Territoires, Temps,

    E-Print Network [OSTI]

    Boyer, Edmond

    Délivré par l'Université Paul-Valéry-Montpellier 3 Préparée au sein de l'école doctorale ENTRE LA TEIGNE DU CHOU PLUTELLA XYLOSTELLA (L.) ET SES PRINCIPAUX PARASITOIDES EN CONDITIONS TROPICALES avec le chou peut être envisagée pour réduire les populations de la teigne. Les études en laboratoire

  17. K-Area and Par Pond Sewage Sludge Application Sites Groundwater Monitoring Report: Third quarter 1993

    SciTech Connect (OSTI)

    Not Available

    1994-01-01T23:59:59.000Z

    Samples from the three wells at the K-Area Sewage Sludge Application Site (KSS wells) and the three wells at the Par Pond Sewage Sludge Application Site (PSS wells) are analyzed quarterly for constituents required by South Carolina Department of Health and Environmental Control Construction Permit 13,173 and, as requested, for other constituents as part of the Savannah River Site (SRS) Groundwater Monitoring Program. Annual analyses for other constituents, primarily metals, also are required by the permit. Iron and lead, permit-required constituents, and aluminum presently exceed SRS flagging standards in samples from the two sites. Elevated concentrations of metals at these sites, not reported during 1992, may be the reflection of a recent change in analytical methodology.

  18. K-Area and Par Pond Sewage Sludge Application Sites Groundwater Monitoring Report. First quarter 1993

    SciTech Connect (OSTI)

    Not Available

    1993-07-01T23:59:59.000Z

    Samples from the three wells at the K-Area Sewage Sludge Application Site (KSS wells) and the three wells at the Par Pond Sewage Sludge Application Site (PSS wells) are analyzed quarterly for constituents required by South Carolina Department of Health and Environmental Control Construction Permit 13,173 and, as requested, for other constituents as part of the Savannah River Site Groundwater Monitoring Program. Annual analyses for other constituents, primarily metals, also are required by the permit. During first quarter 1993, no permit-required constituents exceeded standards at the two sites except iron, which was elevated in one KSS well and two PSS wells. Aluminum, not required by the permit, was the only other constituent that exceeded standards. Elevated levels of aluminum and iron at these two sites may be concurrent with a change in analytical methodology. As in previous quarters, chlordane concentrations did not exceed the detection limit in any of the wells.

  19. CALiPER Report 20.1: Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps

    Broader source: Energy.gov [DOE]

    This December 3, 2013 webinar explored the findings of CALiPER 20.1: Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps and discussed what attributes to...

  20. SPECTRE D'MISSION DES RADICAUX OH ET OD Par L. HERMAN, P. FELENBOK et Mme R. HERMAN (*),

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    83. SPECTRE D'ÉMISSION DES RADICAUX OH ET OD Par L. HERMAN, P. FELENBOK et Mme R. HERMAN OH et (0,8), (0,9), (0,10), (0,11) et (1,11) de OD appartenant au système B 2 03A32014 A 2 03A3 a été deux niveaux ont été redéterminées pour OH et OD. Les perturbations observées dans la structure de

  1. OFFRE D'EMPLOI Le Conservatoire botanique national du Massif central est un tablissement public, agr par le Ministre

    E-Print Network [OSTI]

    -Loire, du Parc naturel régional Livradois-Forez, du Syndicat mixte d'aménagement territorial du Haut botanique national définies par l'article L414-10 du code de l'environnement comme suit : Contribuer, dans code de l'environnement dans la mesure compatible avec le respect des habitats et des espèces et

  2. Maroc, terre d'origines... Cette exposition a t produite par le Centre de Documentation et de Recherche Archologique

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Maroc, terre d'origines... Cette exposition a été produite par le Centre de Documentation et de Recherche Archéologique Départemental (CDERAD), avec le concours du Commissariat Général du Temps du Maroc en France et du Service de Coopération et d'Action Culturelle de l'Ambassade de France au Maroc, et

  3. Sonie directionnelle en basse frquence Effet sur des sons purs latraliss uniquement par des diffrences de temps

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Sonie directionnelle en basse fréquence Effet sur des sons purs latéralisés uniquement par des varie elle aussi en fonction de l'azimut. Ce phénomène est connu en tant que sonie directionnelle et variation de sonie observée pour différents azimuts était supérieure à ce qui pouvait être attendu des

  4. [)r PAR1 rMF.Nr o Dr (.FIrMr( A .IF]CNC)I,OGIi,

    E-Print Network [OSTI]

    Guidoni, Leonardo

    [)r PAR1 rMF.Nr o Dr (.FIrMr( A E .IF]CNC)I,OGIi, f)Ã?]I I-ARMACo @ ;^.*r.l-EN,.m BANDO Dl SELEZIONE n. 17 PER lL CONFERIMENTO Dt N. 1 ASSEGNO PER LO SVOLGIMENTO Dl ATTIVITA DI RICERCA DI CATEGORIA B riunita la Commissione esaminatrice per il bando di selezione n. 17 relativo al conferimento di n. 1

  5. La distribution d'automobiles neuves en Europe est rgie par un rglement d'exemption aux rgles de la

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    La distribution d'automobiles neuves en Europe est régie par un règlement d'exemption aux règles de contexte, les concessionnaires doivent repenser leur métier de distributeurs automobiles pour transformer les menaces en opportunités. Les spéculations sur l'avenir du système de la distribution automobile en

  6. PaR Tensile Truss for Nuclear Decontamination and Decommissioning - 12467

    SciTech Connect (OSTI)

    Doebler, Gary R. [PaR Systems Inc., 707 County Road E West, Shoreview, MN 55126 (United States)

    2012-07-01T23:59:59.000Z

    Remote robotics and manipulators are commonly used in nuclear decontamination and decommissioning (D and D) processes. D and D robots are often deployed using rigid telescoping masts in order to apply and counteract side loads. However, for very long vertical reaches (15 meters or longer) and high lift capacities, a telescopic is usually not practical due to the large cross section and weight required to make the mast stiff and resist seismic forces. For those long vertical travel applications, PaR Systems has recently developed the Tensile Truss, a rigid, hoist-driven 'structure' that employs six independent wire rope hoists to achieve long vertical reaches. Like a mast, the Tensile Truss is typically attached to a bridge-mounted trolley and is used as a platform for robotic manipulators and other remotely operated tools. For suspended, rigid deployment of D and D tools with very long vertical reaches, the Tensile Truss can be a better alternative than a telescoping mast. Masts have length limitations that can make them impractical or unworkable as lengths increase. The Tensile Truss also has the added benefits of increased safety, ease of decontamination, superior stiffness and ability to withstand excessive side loading. A Tensile Truss system is currently being considered for D and D operations and spent fuel recovery at the Fukushima Daiichi Nuclear Power Plant in Japan. This system will deploy interchangeable tools such as underwater hydraulic manipulators, hydraulic shears and crushers, grippers and fuel grapples. (authors)

  7. CALiPER Report 20.3: Robustness of LED PAR38 Lamps

    SciTech Connect (OSTI)

    Poplawski, Michael E.; Royer, Michael P.; Brown, Charles C.

    2014-12-31T23:59:59.000Z

    Three samples of 40 of the Series 20 PAR38 lamps underwent multi-stress testing, whereby samples were subjected to increasing levels of simultaneous thermal, humidity, electrical, and vibrational stress. The results do not explicitly predict expected lifetime or reliability, but they can be compared with one another, as well as with benchmark conventional products, to assess the relative robustness of the product designs. On average, the 32 LED lamp models tested were substantially more robust than the conventional benchmark lamps. As with other performance attributes, however, there was great variability in the robustness and design maturity of the LED lamps. Several LED lamp samples failed within the first one or two levels of the ten-level stress plan, while all three samples of some lamp models completed all ten levels. One potential area of improvement is design maturity, given that more than 25% of the lamp models demonstrated a difference in failure level for the three samples that was greater than or equal to the maximum for the benchmarks. At the same time, the fact that nearly 75% of the lamp models exhibited better design maturity than the benchmarks is noteworthy, given the relative stage of development for the technology.

  8. Quality control summary report for the RFI/RI assessment of the submerged sediment core samples taken at Par Pond, Pond C, and L-Lake

    SciTech Connect (OSTI)

    Koch, J. II

    1996-12-01T23:59:59.000Z

    This report presents a summary of the sediment characterization performed under the direction of the Westinghouse Savannah River Company`s (WSRC) Environmental Protection Department/Environmental Monitoring Section (EPD/EMS) in support of Par Pond, Pond C, and L- Lake. This characterization will be a screening study and will enable the Environmental Sciences Section (ESS) to develop a defensible contaminants of concern list for more extensive characterization of the Par Pond, Pond C, and L-Lake.

  9. TUDE DES CIBLES MINCES CHARGES DE TRITIUM UTILISES DANS LES ACCLRATEURS PRODUISANT DES NEUTRONS RAPIDES PAR LA RACTION D-T

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    61 �TUDE DES CIBLES MINCES CHARG�ES DE TRITIUM UTILIS�ES DANS LES ACC�L�RATEURS PRODUISANT DES [titane-tritium]préparées par le Département des Radioéléments de Saclay. Dix sept cibles ont été ainsi rendement. Abstract. 2014 This study permits the determination of the efficiency of titan-tritium targets

  10. A Study of Contacts and Back-Surface Reflectors for 0.6eV Ga0.32In0.68As/InAs0.32P0.68 Thermophotovoltaic Monolithically Interconnected Modules

    SciTech Connect (OSTI)

    Wu, X.; Duda, A.; Carapella, J. J.; Ward, J. S.; Webb, J. D.; Wanlass, M. W.

    1998-12-23T23:59:59.000Z

    Thermophotovoltaic (TPV) systems have recently rekindled a high level of interest for a number of applications. In order to meet the requirement of low-temperature ({approx}1000 C) TPV systems, 0.6-eV Ga0.32In0.68As/InAs0.32P0.68 TPV monolithically interconnected modules (MIMs) have been developed at the National Renewable energy Laboratory (NREL)[1]. The successful fabrication of Ga0.32In0.68As/InAs0.32P0.68 MIMs depends on developing and optimizing of several key processes. Some results regarding the chemical vapor deposition (CVD)-SiO2 insulating layer, selective chemical etch via sidewall profiles, double-layer antireflection coatings, and metallization via interconnects have previously been given elsewhere [2]. In this paper, we report on the study of contacts and back-surface reflectors. In the first part of this paper, Ti/Pd/Ag and Cr/Pd/Ag contact to n-InAs0.32P0.68and p-Ga0.32In0.68As are investigated. The transfer length method (TLM) was used for measuring of specific contact resistance Rc. The dependence of Rc on different doping levels and different pre-treatment of the two semiconductors will be reported. Also, the adhesion and the thermal stability of Ti/Pd/Ag and Cr/Pd/Ag contacts to n-InAs0.32P0.68and p-Ga0.32In0.68As will be presented. In the second part of this paper, we discuss an optimum back-surface reflector (BSR) that has been developed for 0.6-eV Ga0.32In0.68As/InAs0.32P0.68 TPV MIM devices. The optimum BSR consists of three layers: {approx}1300{angstrom} MgF2 (or {approx}1300{angstrom} CVD SiO2) dielectric layer, {approx}25{angstrom} Ti adhesion layer, and {approx}1500{angstrom} Au reflection layer. This optimum BSR has high reflectance, good adhesion, and excellent thermal stability.

  11. Effect of the photon lifetime on the characteristics of 850-nm vertical-cavity surface-emitting lasers with fully doped distributed Bragg reflectors and an oxide current aperture

    SciTech Connect (OSTI)

    Bobrov, M. A.; Blokhin, S. A., E-mail: blokh@mail.ioffe.ru; Kuzmenkov, A. G.; Maleev, N. A. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation); Blokhin, A. A. [Saint Petersburg State Polytechnical University (Russian Federation); Zadiranov, Yu. M. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation); Nikitina, E. V. [Russian Academy of Sciences, Saint Petersburg Academic University—Nanotechnology Research and Education Center (Russian Federation); Ustinov, V. M. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)

    2014-12-15T23:59:59.000Z

    The effect of the photon lifetime in an optical microcavity on the characteristics of 850-nm vertical-cavity surface-emitting lasers (VCSELs) with fully doped distributed Bragg reflectors (DBRs) and an oxide current aperture is studied. The photon lifetime in the microcavity is controlled by varying the upper DBR reflectance. It is found that the speed of VCSELs with a current-aperture diameter of 10 ?m is mainly limited by the self-heating effect, despite an increase in the relaxation-oscillation damping coefficient with increasing photon lifetime in the microcavity. At the same time, the higher level of internal optical loss in lasers with a current-aperture diameter of 1.5 ?m leads to dominance of the effect of relaxation-oscillation damping independently of the radiation output loss. In the case of devices with a current-aperture diameter of 5.5 ?m, both mechanisms limiting the speed operate, which allow an increase in the VCSEL effective modulation frequency from 21 to 24 GHz as the photon lifetime decreases from 3.7 to 0.8 ps.

  12. JOURNAL DE PHYSIQUE Colloque C6, supplment au no8, Tome 39, aot 1978, page C6-1631 Ce document a t prpar par les membres du Groupe de travail 4 prs du Comit Consultatif de Ther

    E-Print Network [OSTI]

    Boyer, Edmond

    version anglaise sera publiée dans Metrologia gnées par le symbole T T 6 . au début de 1979. Article

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

    SciTech Connect (OSTI)

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

    2014-08-28T23:59:59.000Z

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

  14. aluminate determinacion espectrografia: Topics by E-print Network

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

    Zone Physics Websites Summary: -rich coatings, along with the more soluble precipitated uranyl carbonates and uranophane, likely control) in the 300 Area included Cu (50 tons),...

  15. Method of making terbium activated yttrium aluminate phosphor

    SciTech Connect (OSTI)

    Kasenga, A.F.; Dann, J.N.

    1988-08-09T23:59:59.000Z

    This patent describes the method of making Y/sub 3/Al/sub 5/O/sub 12/:Tb phosphor, the method comprising: (a) forming a uniform mixture of source materials for Y/sub 3/Al/sub 5/O/sub 12/:Tb phosphor and barium fluoride with the barium fluoride being present in the mixture at a level of from about 0.254 to about 0.761 weight percent; and (b) firing the mixture at an elevated temperature to react the source materials to form Y/sub 3/Al/sub 5/O/sub 12/:Tb phosphor having an improved brightness of at least about 7.5% over the phosphor prepared as above the absent barium fluoride, with the 50% size of the phosphor prepared as above with BaF/sub 2/ as measured by Coulter Counter technique being from about 5 to about 7 micrometers in diameter and with from about 1% to about 6% of the phosphor having a size of greater than about 20 micrometers in diameter.

  16. Synthesis and use of (perfluoroaryl) fluoro-aluminate anion

    DOE Patents [OSTI]

    Marks, T.J.; Chen, Y.X.

    1998-12-29T23:59:59.000Z

    A trityl perfluorophenyl alumninate such as tris(2,2{prime},2{double_prime}nonafluorobiphenyl) fluoroaluminate (PBA{sup {minus}}) and its role as a cocatalyst in metallocene-mediated olefin polymerization is disclosed. 4 figs.

  17. aluminous cement: Topics by E-print Network

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

    early stage hydration of different classes of oilwell cement Bentz, Dale P. 93 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

  18. aluminate cements hydration: Topics by E-print Network

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

    early stage hydration of different classes of oilwell cement Bentz, Dale P. 5 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

  19. aluminate cement blended: Topics by E-print Network

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

    early stage hydration of different classes of oilwell cement Bentz, Dale P. 185 NISTIR 7232 CEMHYD3D: A Three-Dimensional Cement Hydration Engineering Websites Summary: NISTIR...

  20. Copper Aluminate as a potential material for high temperature

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management Fermi Site Office (FSO) FSOConverting

  1. Calcium Hexa Aluminate Linings for Alkaline Environments - Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z C o . C l a r8.0 -CURRICULUM9831Mexico'sWallace

  2. les corps qui entourent la lame jouent le rle de la toile dans la premire exprience; par consquent, il est probable que de l'lec-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Sciences and available at http://dx.doi.org/10.1051/jphystap:018880070015501 #12;I56 avoir déterminé ces grandeurs par l'expérience, ce physicien exa- mine jusqu'à quel point les valeurs obtenues peuvent s ni = 2. Mais voici maintenant la partie importante de la question, telle qu'elle se pose pour 1VI

  3. Etude de l'empoussirement des poudres par un test de fluidisation Study of dustiness of powders by a fluidized bed test

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Etude de l'empoussièrement des poudres par un test de fluidisation Study of dustiness of powders by a fluidized bed test MOUFAREJ ABOU JAOUDE Marie-Thérèsea , LEFRANCOIS Emmanuelb , LE BIHAN Olivierc of this study is to use a fluidized bed as a dustiness test based on entrainment and elutriation phenomena

  4. JOURNAL DE PHYSIQUE Colloque C6, supplment au no 12, Tome 35, Dcembre 1974,page C6-487 TUDE PAR SPECTROMTRIE MOSSBAUER

    E-Print Network [OSTI]

    Boyer, Edmond

    SPECTROMÉTRIE MOSSBAUER DES SOLUTIONS SOLIDES Fe-N CUBIQUES ET TÉTRAGONALES J. FOCT Laboratoire de Métallurgie détectés par spectrométrie Mossbauer permettent de préciserles distributionsd'interstitiels dansl sont comparés aux valeurs publiées dans Fe-C et Fe-N. Abstract. - Mossbauer spectra of Fe-N solid

  5. JOURNAL DE PHYSIQUE Colloytte Cl, supple'ment au 110 1, Tome 35, Janvier 1974, page Cl-81 TUDE PAR EFFET MOSSBAUER DE FERRITES

    E-Print Network [OSTI]

    Boyer, Edmond

    EFFET MOSSBAUER DE FERRITES DE NICKEL-FER NON ST(ECHIOMÉTRIQUES : INFLUENCE DE L'ORDRE DIRECTIONNEL L-Briand, 92190 Meudon-Bellevue, France Résumé. - On a entrepris de mettre en évidence par effet Mossbauer l. - It has been undertaken to show by Mossbauer effect the directional order which appears in ferrites

  6. TUDE EXPRIMENTALE DE LA CINTIQUE DE LA PILE DE CHATILLON ParA. ERTAUD, R. BEAUG, H. FAUQUEZ et L. VAUTREY,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    17 A. ÉTUDE EXPÉRIMENTALE DE LA CINÉTIQUE DE LA PILE DE CHATILLON ParA. ERTAUD, R. BEAUGÉ, H courbes de montée en puissance de la pile et leur liaison avec sa réactivité permet de déterminer expérimentalement la variation de réactivité de la pile lorsque les paramètres suivants varient : - niveau d

  7. Article publi par le Laboratoire de Construction en Bton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL

    E-Print Network [OSTI]

    Dalang, Robert C.

    concrete Stress fields Strut-and-tie modelling Testing a b s t r a c t The strength and deformation by the Structural Concrete Laboratory of EPFL Article publié par le Laboratoire de Construction en Béton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL Title: Behaviour of nodal regions

  8. Des six projets de recherche en concurrence, Graphene est l'un des deux slectionns par le programme FET (Future and emerging tech-

    E-Print Network [OSTI]

    Halazonetis, Thanos

    Des six projets de recherche en concurrence, Graphene est l'un des deux sélectionnés par le reconnu en nano-électronique et en matériaux et représentant suisse du projet Graphene (Graphene agship). Aujourd'hui l'Europe lance un projet de recherche d'une envergure sans précédent ( agship). Graphene

  9. LES REPRESENTATIONS DE L'ACCOMPAGNEMENT ET DE LA REMISE AU TRAVAIL DES CHOMEURS DANS LE RESEAU DE L'INSERTION PAR

    E-Print Network [OSTI]

    Boyer, Edmond

    social » dirigée par Alain Vilbrod, aux éditions l'Harmattan Il s'appuie sur un travail socio'insertion ?, �ditions l'harmattan (Ed.) (2008) 276" #12;2 2 traitement du chômage dans ce champ de l'insertion, il s

  10. Article publi par le Laboratoire de Construction en Bton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL

    E-Print Network [OSTI]

    Dalang, Robert C.

    by the Structural Concrete Laboratory of EPFL Article publié par le Laboratoire de Construction en Béton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL Title: Assessment of Shear Strength campaign carried out at Ecole Polytechnique Fédérale de Lausanne on 2 reinforced concrete girders and 10

  11. Article publi par le Laboratoire de Construction en Bton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL

    E-Print Network [OSTI]

    Dalang, Robert C.

    by the Structural Concrete Laboratory of EPFL Article publié par le Laboratoire de Construction en Béton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL Title: Design for punching of prestressed concrete slabs Authors: Clément T., Ramos A.P., Fernández Ruiz M., Muttoni A. Published in: Structural

  12. Article publi par le Laboratoire de Construction en Bton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL

    E-Print Network [OSTI]

    Dalang, Robert C.

    by the Structural Concrete Laboratory of EPFL Article publié par le Laboratoire de Construction en Béton de l'EPFL Paper published by the Structural Concrete Laboratory of EPFL Title: Background to the Model Code 2010. J., Sigrist V. Published in: Structural Concrete, Ernst & Sohn DOI 10.100 2 / suc o .2 012 00064

  13. NUCLATION DE L'TAT MIXTE DANS LE NIOBIUM SUPRACONDUCTEUR Par B. P. LETELLIER, J. C. RENARD et Y. A. ROCHER,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    819. NUCLÉATION DE L'ÉTAT MIXTE DANS LE NIOBIUM SUPRACONDUCTEUR Par B. P. LETELLIER, J. C. RENARD d'établissement de l'état mixte ont été étudiées expérimen- talement dans le niobium supraconducteur in superconducting niobium samples. Above HC1 and below the superheating field HSH, a few vortices are nucleated

  14. CONTRIBUTION A L'TUDE DE L'OXYDATION DU NIOBIUM par Messieurs D. MOLLIMARD, J. BARDOLLE, D. SIMON, C. PERRIN et G. DALIBARD

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    599 CONTRIBUTION A L'ÉTUDE DE L'OXYDATION DU NIOBIUM par Messieurs D. MOLLIMARD, J. BARDOLLE, D. SIMON, C. PERRIN et G. DALIBARD Résumé. 2014 Le présent travail est une étude de l'oxydation du Niobium work, Niobium oxidation is studied in various conditions of tempera- ture and pressure with respect

  15. Accurate measurement of heteronuclear dipolar couplings by phase-alternating R-symmetry (PARS) sequences in magic angle spinning NMR spectroscopy

    SciTech Connect (OSTI)

    Hou, Guangjin, E-mail: hou@udel.edu, E-mail: tpolenov@udel.edu; Lu, Xingyu, E-mail: luxingyu@udel.edu, E-mail: lexvega@comcast.net; Vega, Alexander J., E-mail: luxingyu@udel.edu, E-mail: lexvega@comcast.net; Polenova, Tatyana, E-mail: hou@udel.edu, E-mail: tpolenov@udel.edu [Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA and Pittsburgh Center for HIV Protein Interactions, University of Pittsburgh School of Medicine, 1051 Biomedical Science Tower 3, 3501 Fifth Ave., Pittsburgh, Pennsylvania 15261 (United States)

    2014-09-14T23:59:59.000Z

    We report a Phase-Alternating R-Symmetry (PARS) dipolar recoupling scheme for accurate measurement of heteronuclear {sup 1}H-X (X = {sup 13}C, {sup 15}N, {sup 31}P, etc.) dipolar couplings in MAS NMR experiments. It is an improvement of conventional C- and R-symmetry type DIPSHIFT experiments where, in addition to the dipolar interaction, the {sup 1}H CSA interaction persists and thereby introduces considerable errors in the dipolar measurements. In PARS, phase-shifted RN symmetry pulse blocks applied on the {sup 1}H spins combined with ? pulses applied on the X spins at the end of each RN block efficiently suppress the effect from {sup 1}H chemical shift anisotropy, while keeping the {sup 1}H-X dipolar couplings intact. Another advantage over conventional DIPSHIFT experiments, which require the signal to be detected in the form of a reduced-intensity Hahn echo, is that the series of ? pulses refocuses the X chemical shift and avoids the necessity of echo formation. PARS permits determination of accurate dipolar couplings in a single experiment; it is suitable for a wide range of MAS conditions including both slow and fast MAS frequencies; and it assures dipolar truncation from the remote protons. The performance of PARS is tested on two model systems, [{sup 15}N]-N-acetyl-valine and [U-{sup 13}C,{sup 15}N]-N-formyl-Met-Leu-Phe tripeptide. The application of PARS for site-resolved measurement of accurate {sup 1}H-{sup 15}N dipolar couplings in the context of 3D experiments is presented on U-{sup 13}C,{sup 15}N-enriched dynein light chain protein LC8.

  16. Environmental assessment for the natural fluctuation of water level in Par Pond and reduced water flow in Steel Creek below L-Lake at the Savannah River Site

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

    The Savannah River Operations Office Strategic Plan directs Savannah River Site (SRS) to find ways to reduce operating costs, and to determine what site infrastructure must be maintained and what infrastructure is surplus. Because of the mission change, L-Lake, Par Pond, and the river water system are no longer needed to support current missions and therefore provide an opportunity for operating cost reduction. If SRS determines that L-Lake, Par Pond, and the river water system are no longer needed to support future missions and are considered surplus, appropriate NEPA documentation will be prepared. The purpose of the proposed action in this Environmental Assessment is to begin an examination of the need for the Site`s river water system by (1) developing data needed to evaluate the potential environmental impacts of further reducing or eliminating the flow demands from the Site`s river water system and; (2) evaluating the potential of reducing operating costs by allowing the water level in Par Pond to fluctuate naturally through reduced pumping. This action also includes reducing the current flow rates from L-Lake to Steel Creek to natural stream flows while maintaining full pool. The recently approved Par Pond CERCLA Interim Action Proposed Plan (IAPP) committed to evaluate in a NEPA document the environmental consequences of this proposed action. This document evaluated the remediation of human health and ecological risks associated with the three year drawdown of Par Pond. Should any of the parameters sampled in the reservoir and streams (e.g., water quality, biota, etc.) exceed established threshold levels during the implementation of the proposed action, water would again be pumped into the reservoir to minimize any impacts by bringing the water level back to an appropriate level about 58.2 m (195 ft).

  17. Ideal light concentrators with reflector gaps

    SciTech Connect (OSTI)

    Winston, Roland (Chicago, IL)

    1980-01-01T23:59:59.000Z

    A cylindrical or trough-like radiant energy concentration and collection device is provided. The device includes an energy absorber, a glazing enveloping the absorber and a reflective wall. The ideal contour of the reflective wall is determined with reference to a virtual absorber and not the actual absorber cross section.

  18. Laser having a nonlinear phase conjugating reflector

    SciTech Connect (OSTI)

    Wang, V.; Yariv, A.

    1980-11-11T23:59:59.000Z

    A laser is described which self-corrects for distortions introduced into the laser beam wavefronts by aberrations and time-varying phenomena internal to the laser. The improved laser includes a partially transmissive first reflecting element, an aperture stop, a lasing medium and a nonlinear phase conjugate reflecting device as the second reflecting element. During laser operation, aberrated wavefronts impinging upon the second reflecting element are reflected as the phase conjugate waveform thereof. The aperture stop restricts laser operation to the fundamental mode which allows only corrected, unaberrated waves to pass through the aperture stop and to subsequently exit the laser. Four embodiments are described utilizing stimulated brillouin scattering (Sbs), four-wave mixing, three-wave mixing and photon echo devices as the second reflecting element.

  19. Ideal light concentrators with reflector gaps

    SciTech Connect (OSTI)

    Winston, R.

    1980-10-28T23:59:59.000Z

    A cylindrical or trough-like radiant energy concentration and collection device is provided. The device includes an energy absorber, a glazing enveloping the absorber and a reflective wall. The ideal contour of the reflective wall is determined with reference to a virtual absorber and not the actual absorber cross section.

  20. Correlated-Intensity velocimeter for Arbitrary Reflector

    DOE Patents [OSTI]

    Wang, Zhehui (Los Alamos, NM); Luo, Shengnian (Los Alamos, NM); Barnes, Cris W. (Arlington, VA); Paul, Stephen F. (West Orange, NJ)

    2008-11-11T23:59:59.000Z

    A velocimetry apparatus and method comprising splitting incoming reflected laser light and directing the laser light into first and second arms, filtering the laser light with passband filters in the first and second arms, one having a positive passband slope and the other having a negative passband slope, and detecting the filtered laser light via light intensity detectors following the passband filters in the first and second arms

  1. Optical Reflectance Measurements for Commonly Used Reflectors

    E-Print Network [OSTI]

    Janecek, Petr Martin

    2009-01-01T23:59:59.000Z

    AC02-05CH11231, grant number NNSA LB06-316-PD05 / NN2001000.AC02-05CH11231, grant number NNSA LB06-316-PD05 / NN2001000.

  2. Solar module having reflector between cells

    DOE Patents [OSTI]

    Kardauskas, Michael J. (Billerica, MA)

    1999-01-01T23:59:59.000Z

    A photovoltaic module comprising an array of electrically interconnected photovoltaic cells disposed in a planar and mutually spaced relationship between a light-transparent front cover member in sheet form and a back sheet structure is provided with a novel light-reflecting means disposed between adjacent cells for reflecting light falling in the areas between cells back toward said transparent cover member for further internal reflection onto the solar cells. The light-reflecting comprises a flexible plastic film that has been embossed so as to have a plurality of small V-shaped grooves in its front surface, and a thin light-reflecting coating on said front surface, the portions of said coating along the sides of said grooves forming light-reflecting facets, said grooves being formed so that said facets will reflect light impinging thereon back into said transparent cover sheet with an angle of incidence greater than the critical angle, whereby substantially all of the reflected light will be internally reflected from said cover sheet back to said solar modules, thereby increasing the current output of the module.

  3. The Sandia Wave Reflector - Energy Innovation Portal

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in the Earth's LowerFacilityTheSandia Hand Features

  4. DOE CALiPER Program, Report 20.1 Subjective Evaluation of Beam Quality, Shadow Quality, and Color Quality for LED PAR38 Lamps

    SciTech Connect (OSTI)

    Royer, Michael P.; Poplawski, Michael E.; Miller, Naomi J.

    2013-10-01T23:59:59.000Z

    This report focuses on human-evaluated characteristics, including beam quality, shadow quality, and color quality. Using a questionnaire that included rank ordering, opinions on 27 of the Report 20 PAR38 lamps were gathered during a demonstration event for members of the local Illuminating Engineering Society (IES) chapter. This was not a rigorous scientific experiment, and the data should not be extrapolated beyond the scope of the demonstration. The results suggest that many of the LED products compared favorably to halogen PAR38 benchmarks in all attributes considered. LED lamps using a single-emitter design were generally preferred for their beam quality and shadow quality, and the IES members ranking of color quality did not always match the rank according to the color rendering index (CRI).

  5. DuraLamp USA: Order (2010-CE-0912)

    Broader source: Energy.gov [DOE]

    DOE ordered DuraLamp USA, Inc. to pay a $2,500 civil penalty after finding DuraLamp USA had failed to certify that model PAR 30, an incandescent reflector lamp, complies with the applicable energy conservation standards.

  6. JOURNAL DE PHYSIQUE CoIloq~reC l , s~pplmeritau rzo 1, Tonze 35, Janvier 1974, page Cl-101 TUDE PAR EFFET MOSSBAUER

    E-Print Network [OSTI]

    Boyer, Edmond

    PAR EFFET MOSSBAUER DES PROPRIÉTÉS MAGNÉTIQUES DE ZnMn,O, M. WAUTELET et A. GÉRARD Institut de spectrométrie Mossbauer entre 4,2 et 300 K. Ce n'est qu'aux environs de 50 K qu'apparaît une structure Zeeman. The compound Zn(Mno.o~Fe1i.o2)?04was studied between 4.2 and 300 K, by Mossbauer spectrometry. The Zeeman

  7. REGLEMENT ELECTORAL (Rglement initialement approuv par le Bureau de l'Universit du 25 septembre 1970, PV n 17, p. 507-520, point 2, tel

    E-Print Network [OSTI]

    Cerf, Nicolas

    septembre 1970, PV n° 17, p. 507-520, point 2, tel que modifié par décisions du Conseil du 23 septembre 1991, PV n° 429, p. 898-901, Annexe 223 ; du CA du 21 octobre 1991, PV n° 430, p. 1071-1072 ; du CA du 18 novembre 1997, PV n° 431, p. 1187-1190, Annexe 277 ; du CA du 23 octobre 1995, PV n° 480, p. 1037

  8. SUR LA VARIT DES TATS VIBRATOIRES D'UN CYLINDRE CREUX DE QUARTZ Par NY TSI-Z et CHUNG MING-SAN.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    illustrés par des figures de Chladni. 1. Introduction. - Nous avons constaté qu'un cylindre creux de quartz figures de Chladni, obtenues avee de la poudre de lycopode, sur l'extrémité supérieure du cylindre qui est longueur de quelques-uns de ces cylindres, Une fignre déterminée de Chladni caractérise sûre- ment un même

  9. 17 `eme Congr`es Francais de Mecanique Troyes, septembre 2005 Optimisation aerodynamique par mod`ele reduit POD et methode `a region

    E-Print Network [OSTI]

    Bergmann, Michel

    under rotary control of the cylinder wake in the laminar regime. The optimization problem is solved (CPU, m´emoire) li´es `a la r´esolution des probl`emes d'optimisation sont tellement importants que proposons de r´esoudre le probl`eme d'optimisation associ´e au contr^ole d'´ecoulement par une m´ethode de

  10. L'valuation des consquences de dcisions stratgiques en levage extensif en Uruguay. Une approche par les systmes multi-agents.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    L'évaluation des conséquences de décisions stratégiques en élevage extensif en Uruguay. Une extensif en Uruguay Une approche par les systèmes multi-agents. Doctorat d'Ingénieur soutenu le 12 octobre-6Jul2011 #12;L'évaluation des conséquences de décisions stratégiques en élevage extensif en Uruguay

  11. SPECTROMTRE 03B1 A SCINTILLATION AVEC I Cs(Tl) Par J. FLEURY, P. PERRIN, M. BOGE et J. LAUGIER,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    480. SPECTROMÈTRE 03B1 A SCINTILLATION AVEC I Cs(Tl) Par J. FLEURY, P. PERRIN, M. BOGE et J 03B1 de 9 MeV. Abstract. 2014 In spectrometry with CsI(Tl) crystals the following characteristicsV with NaI). The best resolution in spectrometry 03B1 is 2.5 % with 9 MeV 03B1-particles. LE .IOURNAL DE

  12. Rsum --L'industrie automobile est aujourd'hui caractrise par la varit des produits proposs, le cycle de vie toujours plus

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Résumé -- L'industrie automobile est aujourd'hui caractérisée par la variété des produits proposés constructeur automobile PSA Peugeot Citroën, permettant de mettre en évidence et d'évaluer les impacts globaux, Chaîne logistique, Production automobile. I. CONTEXTE INDUSTRIEL ET PROBLEMATIQUE A. Caractéristiques de

  13. prsente par Peggy Provent

    E-Print Network [OSTI]

    Boyer, Edmond

    'origine de ce travail. C'est aussi elle qui m'a encadrée à mon arrivée dans le laboratoire et m'a donné gout

  14. prsente par Franck LECOCQ

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    toux ceux dont l'enthousiasme et la motivation font vivre ce drôle de navire qu'est le CIRED. A tout

  15. prsente par Malorie TRILLAT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    remerciements à Monsieur J.-B. Leblond, Professeur à l'Université Pierre et Marie Curie et correspondant de l'avoir accueillie, en particulier Messieurs G. Achard et Y. Gon- thier, directeurs successifs du laboratoire, ainsi

  16. Prsente par Grgory VERNIER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Conformationnelle et Versatilité des Interactions Protéines-Lipides Cas d'étude de l'-lactalbumine et de l'apo Rapporteur Dr. Bruno ANTONNY Rapporteur Pr. James STURGIS Examinateur Dr. Daniel GILLET Examinateur Dr Protéines-Lipides Cas d'étude de l'-lactalbumine et de l'apo-myoglobine Résumé : Certaines protéines

  17. prsente par Blandine Romain

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for the interpretation of optical measurements. The focus is on spatially resolved spectroscopy, such as micro photoluminescence (¯­PL) and near­field scanning optical microscopy (NSOM). A related technique which al­ lows be derived [5] : ` \\Gamma ¯ h 2 \\DeltaR 2MX +v(R) ' /ff (R) = Eff /ff (R) : (2.1) Here a factorization

  18. presentee par Catherine Gruselle

    E-Print Network [OSTI]

    Boyer, Edmond

    complex chemistry is used, a new mechanism for propane/air combustion has been developed and validated-FPI combustion model. In the experimental configuration, a turbulent stratified propane/air flame is propagating deals with the study of flame kernel development in a stratified mixture in terms of equivalence ratio

  19. prsente par Guillaume Lodier

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CAI/HCCI Membres du jury : Rapporteurs : Bénédicte Cuenot Chercheur Senior, CERFACS, Toulouse Dirk'auto-inflammation apr`es compression rapide d'un m´elange turbulent r´eactif - Application au contexte CAI/HCCI La strat est l'essence et HCCI, lorsqu'il s'agit de Diesel) s'int`egre dans une d´emarche de r´eduction des

  20. presentee par Pierre Mathiot

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ´ecialit´e : Sciences de la Terre et de l'Univers Influence du for¸cage atmosph´erique sur la repr´esentation de la la formation des eaux denses de plateau et des int´eractions entre la glace de mer, l'oc´ean et l'atmosph plateau continental antarctique (glace de mer, ice shelves, for¸cage atmosph´erique) dans le code d

  1. ARM - Datastreams - pars2

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492airDatastreamsncepgfsnausfc Documentation XDC documentationDatastreamsnwsupa6s

  2. PAR Pond N Roads

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomass and BiofuelsOversightand Simulated

  3. A study of contacts and back-surface reflectors for 0.6-eV Ga{sub 0.32}In{sub 0.68}As/InAs{sub 0.32}P{sub 0.68} thermophotovoltaic monolithically interconnected modules

    SciTech Connect (OSTI)

    Wu, X.; Duda, A.; Carapella, J.J.; Ward, J.S.; Webb, J.D.; Wanlass, M.W. [National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)

    1999-03-01T23:59:59.000Z

    Thermophotovoltaic (TPV) systems have recently rekindled a high level of interest for a number of applications. In order to meet the requirement of low-temperature ({approximately}1000&hthinsp;{degree}C) TPV systems, 0.6-eV Ga{sub 0.32}In{sub 0.68}As/InAs{sub 0.32}P{sub 0.68} TPV monolithically interconnected modules (MIMs) have been developed at the National Renewable energy Laboratory (NREL) [1]. The successful fabrication of Ga{sub 0.32}In{sub 0.68}As/InAs{sub 0.32}P{sub 0.68} MIMs depends on developing and optimizing of several key processes. Some results regarding the chemical vapor deposition (CVD)-SiO{sub 2} insulating layer, selective chemical etch via sidewall profiles, double-layer antireflection coatings, and metallization via interconnects have previously been given elsewhere [2]. In this paper, we report on the study of contacts and back-surface reflectors. In the first part of this paper, Ti/Pd/Ag and Cr/Pd/Ag contact to n-InAs{sub 0.32}P{sub 0.68} and p-Ga{sub 0.32}In{sub 0.68}As are investigated. The transfer length method (TLM) was used for measuring of specific contact resistance R{sub c}. The dependence of R{sub c} on different doping levels and different pre-treatment of the two semiconductors will be reported. Also, the adhesion and the thermal stability of Ti/Pd/Ag and Cr/Pd/Ag contacts to n-InAs{sub 0.32}P{sub 0.68} and p-Ga{sub 0.32}In{sub 0.68}As will be presented. In the second part of this paper, we discuss an optimum back-surface reflector (BSR) that has been developed for 0.6-eV Ga{sub 0.32}In{sub 0.68}As/InAs{sub 0.32}P{sub 0.68} TPV MIM devices. The optimum BSR consists of three layers: {approximately}1300 {Angstrom} MgF{sub 2} (or {approximately}1300 {Angstrom} CVD SiO{sub 2}) dielectric layer, {approximately}25 {Angstrom} Ti adhesion layer, and {approximately}1500 {Angstrom} Au reflection layer. This optimum BSR has high reflectance, good adhesion, and excellent thermal stability. {copyright} {ital 1999 American Institute of Physics.}

  4. Relation entre l'ingestion et l'excrtion de riboflavine chez la ratte aprs le sevrage de sa porte, par J. LECLERC, Marie-Louise MILLER. I.N.R.A., Station de Recherches sur la QualitJ. LECLERC, Marie-Louise MILLER. l.N.R.A., Station de Recherches sur la Qu

    E-Print Network [OSTI]

    Boyer, Edmond

    Relation entre l'ingestion et l'excrétion de riboflavine chez la ratte après le sevrage de sa (1954) portant sur l'excrétion urinaire de riboflavine chez le rat femelle après le sevrage de sa por différant que par l'apport de riboflavine qui est respectivement de 2, 4, 6, 8, 12 ou 16 mg par kg de régime

  5. Aprs avoir mis en lumire l'importance du rle jou par la protine Cx36 dans le contrle de la production d'insuline, une quipe de cher-

    E-Print Network [OSTI]

    Loewith, Robbie

    Après avoir mis en lumière l'importance du rôle joué par la protéine Cx36 dans le contrôle de la ces cellules, des chercheurs de l'UNIGE ont identi é, il y a quelques mois, une protéine appelée Cx36 plus fabriquer de Cx36, la synchronisation des cellules bêta disparaît et la production d

  6. MESURE DE .LATEMPERA'NRE IONIQUE DU PLASMA FOCUS PAR DIFFUSION THOMON VERS L'AVANT A. Bernard, A. Coudeville, A. Jolas, J. de Mascureau, J.P. Watteau

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MESURE DE .LATEMPERA'NRE IONIQUE DU PLASMA FOCUS PAR DIFFUSION THOM�ON VERS L'AVANT A. Bernard, A spectres obtenus sont comparés aux résultats théoriques de Salpeter. The plasma Focus is studied by means

  7. As was hypothesized, annual ET water losses appears to be driven by seasonal variations in the total aboveground biomass of the treatment wetland. We found that only air temperature and PAR were significant climatic drivers of ET. However, unlike

    E-Print Network [OSTI]

    Hall, Sharon J.

    in the total aboveground biomass of the treatment wetland. We found that only air temperature and PAR were budget of an aridland" urban wastewater treatment wetland" Experimental Design and Field Sampling! · 10.T.A. 2003. Water and mass budgets of a vertical=-flow constructed wetland used for wastewater treatment

  8. Optical and Mechanical Effects of Elastomeric Distributed Bragg Reflectors

    E-Print Network [OSTI]

    Kamita, Gen

    2014-05-27T23:59:59.000Z

    .59) will give the true stress t: t1 = t2 = F A = piR2?P 2piRH = R?P 2H . (2.60) Equation 2.60 can be used to analyse the stress and strain of spherical balloons, or of any thin membrane/wall with a spherical curvature under pressure difference, including boilers...

  9. MODELLING OF CAVITY RECEIVER HEAT TRANSFER COMPACT LINEAR FRESNEL REFLECTOR

    E-Print Network [OSTI]

    . This approach allows an affordable entry into renewable energy for existing coal-power producers, and allows them to meet the mandatory renewable energy targets set by the government of New South Wales . (Hu et) linear absorbers, achieving higher ground area efficiency. · Receiver is an inverted, trapezoidal, linear

  10. Convection venting lensed reflector-type compact fluorescent lamp system

    DOE Patents [OSTI]

    Pelton, B.A.; Siminovitch, M.

    1997-07-29T23:59:59.000Z

    Disclosed herein is a fluorescent lamp housing assembly capable of providing convection cooling to the lamp and the ballast. The lens of the present invention includes two distinct portions, a central portion and an apertured portion. The housing assembly further includes apertures so that air mass is able to freely move up through the assembly and out ventilation apertures. 12 figs.

  11. Convection venting lensed reflector-type compact fluorescent lamp system

    DOE Patents [OSTI]

    Pelton, Bruce A. (825 Manor Rd., El Sobrante, CA 94803); Siminovitch, Michael (829 Manor Rd., El Sobrante, CA 94803)

    1997-01-01T23:59:59.000Z

    Disclosed herein is a fluorescent lamp housing assembly capable of providing convection cooling to the lamp and the ballast. The lens of the present invention includes two distinct portions, a central portion and an apertured portion. The housing assembly further includes apertures so that air mass is able to freely move up through the assembly and out ventilation apertures.

  12. Advanced Manufacture of Reflectors- FY12 Q4

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this University of Arizona project, funded by SunShot, for the fourth quarter of fiscal year 2012.

  13. Development of Advanced Polymeric Reflector for CSP Applications - Final Report

    SciTech Connect (OSTI)

    Treglio, Richard, T; Boyle, Keith, A; Henderson, Hildie

    2013-03-28T23:59:59.000Z

    This project attempted to deposit extremely thick and dense protective barrier onto a mirror film stack with a PET substrate. The target thickness was very high for thin film products; particularly since large areas and long production lengths of film are needed to make the final product economic. The technical investigations in this project centered on maintaining a quality barrier (i.e. dense film) while evaporating alumina with a high deposition rate onto a low cost PET substrate. The project found that the proposed configuration, particularly direct ion bombardment, provides too narrow a solution space to effectively and economically produce the ASRM attempted. The initial project goals were met when depositing on a limited width and at a modest rate. However, expanding to wide deposition at aggressive deposition rates did not produce consistent film quality. Economic viability drives the process to maximize deposition rate. The current system configuration has a limiting upper rate threshold that does not appear economically viable. For future work, alternate approaches seem needed to address the challenges encountered in the scale-up phase of this project.

  14. Enhancing cholesteric liquid crystal laser performance using a cholesteric reflector

    E-Print Network [OSTI]

    Wu, Shin-Tson

    laser based on a free- standing film of photo polymerized cholesteric liquid crystal," Appl. Phys. Lett as an optic fiber-based temperature sensor," Appl. Phys. Lett. 85, 2691-2693 (2004). 15. Y. Huang, Y. Zhou

  15. The Effect of Reflectors and Delamping Upon Light Levels

    E-Print Network [OSTI]

    Pashkevich, P. A.

    1989-01-01T23:59:59.000Z

    raging from 52 percent between rows to 80 percent under rows for an average of nearly 70 percent. Light levels in rooms with fixtures on an even grid spacing ranged from 73 percent between fixtures to 86 percent under fixtures for room averages of 75...

  16. Advanced Manufacture of Reflectors- FY13 Q1

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this University of Arizona project, funded by SunShot, for the first quarter of fiscal year 2013.

  17. Project Profile: Advanced Manufacture of Reflectors | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | Department ofPlantLong IslandDepartment

  18. Project Profile: Advanced Polymeric Reflector for CSP Applications |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | Department ofPlantLong IslandDepartmentDepartment

  19. Project Profile: High Performance Reflector Panels for CSP Assemblies |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | DepartmentEnergy MITis PVSalts forDepartment

  20. BERKELEY PAR LABBERKELEY PAR LAB Virtual Musical Instrument

    E-Print Network [OSTI]

    California at Berkeley, University of

    Fingered Jack is a Python-based SEJITS framework to generate code for data- parallel and many-core CPUs transforms ­ We use TFJ to target SSE on Tessellation and the vector unit on RISC-V Hwacha (UC Berkeley test chip) 5 Cache Vector Register-File Memory Controller RISC-V Vector Core Data-Parallel CPUs Multicore

  1. Thermochemical Properties of Gibbsite, Bayerite, Boehmite, Diaspore, and the Aluminate Ion between 0 and 3500C

    E-Print Network [OSTI]

    Apps, John A.; Neill, J.M.; Jun, C.-H.

    1988-01-01T23:59:59.000Z

    Chemie, v. 318, p. 238-256. Glasstone, S. , Laidler, KJ. andusing absolute rate theory (Glasstone et al. , 1941). It is

  2. Atomistic Simulation Study of Spinel Oxides: Zinc Aluminate and Zinc Gallate

    E-Print Network [OSTI]

    Pandey, Ravi

    + in the spinel oxides considered here. The calculated formation energies of the native defects suggest, Julian D. Gale, Suresh K. Sampath, and Jose M. Recio§ Department of Physics, Michigan Technological University, Houghton, Michigan 49931; Department of Chemistry, Imperial College of Science, Technology

  3. Reactive Air Aluminizing of Nicrofer-6025HT for Use in Advanced Coal-Based Power Plants

    SciTech Connect (OSTI)

    Joshi, Vineet V.; Choi, Jung-Pyung; Darsell, Jens T.; Meier, Alan; Weil, K. Scott

    2013-01-01T23:59:59.000Z

    The present work demonstrated the feasibility of preparing RAA coatings on Nicrofer and compared the effect of aluminum powder size on the RAA process.

  4. E-Print Network 3.0 - aluminate blend phosphate Sample Search...

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

    Space Sciences Collection: Physics 42 Formation of Biomimetic Porous Calcium Phosphate Coatings on Surfaces of PolyethyleneZinc Stearate Blends Summary: -zinc stearate blends...

  5. cole Centrale Paris prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ANR SIMTUR (SImulation aux grandes échelles Massivement parallèles pour les TURbines à gaz). Ce projet

  6. Ecole Centrale Paris prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    prémélangé swirlé : Application à l'étude du bruit de combustion dans les chambres de turbines à gaz Soutenue, dans le cadre du projet "Bruco" sur le bruit de combustion issu des turbines à gaz. Ce programme type moteurs aéronautiques et turbines à gaz. Des phénomènes de bruit et d'instabilités de combustion

  7. Spcialit CHIMIE Par Christian Klemps

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Ricard and Xavier Le Goff for the crystal structure solution and refinement work presented in this thesis Production 8 3.1 Phillips Petroleum Trimerization Process 8 3.2 Systems with Cyclopentadienyl Ligands 10 3(pyrazolyl)methane Ligands 16 3.6.2.3 Diazabutadiene Ligands 18 3.6.3 Systems with Mixed Nitrogen-Sulfur Donor Ligands 18 3

  8. Ecole Centrale Paris Prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of lean mixture ignition by NRP discharges. To this end, we use a lean propane/air mixture at pressure up Discharges in Air and Application to Plasma-Assisted Combustion Thèse soutenue le 19 décembre 2013 Jury : M pressure air at 300 and 1000 K. The electrical energy of each pulse is of the order of 1 mJ. We analyze

  9. Ecole Centrale Paris presentee par

    E-Print Network [OSTI]

    Boyer, Edmond

    -15Feb2006 #12;Remerciements ii Merci `a vous deux de m'avoir donn´e le go^ut du m´etier de chercheur et

  10. ESTADO DO PAR PODER JUDICIRIO

    E-Print Network [OSTI]

    Maier, Rudolf Richard

    / 10000668, Clemilton Salomao de Oliveira / 10002200, Daniel Bezerra Montenegro Girao / 10002934, Daniel Salomao de Oliveira / 10002200, Daniel Bezerra Montenegro #12;Girao / 10002

  11. Dlivre par Doctorat en cotutelle

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , Langues, Sciences Humaines et Sociales INSTITUT AGRONOMIQUE ET VETERINAIRE HASSAN II Rabat-MAROC �cole d II Rabat (Maroc) directeur de thèse M. Michael F. DAVIE, Professeur, Université François-Rabelais, Tours, rapporteur M. Marcel KUPER, Chercheur, Cirad Rabat (Maroc), HDR, rapporteur M. Philippe LE GRUSSE

  12. Test results, Industrial Solar Technology parabolic trough solar collector

    SciTech Connect (OSTI)

    Dudley, V.E. [EG and G MSI, Albuquerque, NM (United States); Evans, L.R.; Matthews, C.W. [Sandia National Labs., Albuquerque, NM (United States)

    1995-11-01T23:59:59.000Z

    Sandia National Laboratories and Industrial Solar Technology are cost-sharing development of advanced parabolic trough technology. As part of this effort, several configurations of an IST solar collector were tested to determine the collector efficiency and thermal losses with black chrome and black nickel receiver selective coatings, combined with aluminized film and silver film reflectors, using standard Pyrex{reg_sign} and anti-reflective coated Pyrex{reg_sign} glass receiver envelopes. The development effort has been successful, producing an advanced collector with 77% optical efficiency, using silver-film reflectors, a black nickel receiver coating, and a solgel anti-reflective glass receiver envelope. For each receiver configuration, performance equations were empirically derived relating collector efficiency and thermal losses to the operating temperature. Finally, equations were derived showing collector performance as a function of input insolation value, incident angle, and operating temperature.

  13. The component slope linear model for calculating intensive partial molar properties /application to waste glasses and aluminate solutions

    SciTech Connect (OSTI)

    Reynolds, Jacob G. [Washington River Protection Solutions, LLC, Richland, WA (United States)

    2013-01-11T23:59:59.000Z

    Partial molar properties are the changes occurring when the fraction of one component is varied while the fractions of all other component mole fractions change proportionally. They have many practical and theoretical applications in chemical thermodynamics. Partial molar properties of chemical mixtures are difficult to measure because the component mole fractions must sum to one, so a change in fraction of one component must be offset with a change in one or more other components. Given that more than one component fraction is changing at a time, it is difficult to assign a change in measured response to a change in a single component. In this study, the Component Slope Linear Model (CSLM), a model previously published in the statistics literature, is shown to have coefficients that correspond to the intensive partial molar properties. If a measured property is plotted against the mole fraction of a component while keeping the proportions of all other components constant, the slope at any given point on a graph of this curve is the partial molar property for that constituent. Actually plotting this graph has been used to determine partial molar properties for many years. The CSLM directly includes this slope in a model that predicts properties as a function of the component mole fractions. This model is demonstrated by applying it to the constant pressure heat capacity data from the NaOH-NaAl(OH){sub 4}-H{sub 2}O system, a system that simplifies Hanford nuclear waste. The partial molar properties of H{sub 2}O, NaOH, and NaAl(OH){sub 4} are determined. The equivalence of the CSLM and the graphical method is verified by comparing results determined by the two methods. The CSLM model has been previously used to predict the liquidus temperature of spinel crystals precipitated from Hanford waste glass. Those model coefficients are re-interpreted here as the partial molar spinel liquidus temperature of the glass components.

  14. Full Core, Heterogeneous, Time Dependent Neutron Transport Calculations with the 3D Code DeCART

    E-Print Network [OSTI]

    Hursin, Mathieu

    2010-01-01T23:59:59.000Z

    tubes and baffle and radial reflector. Axially, there are 22Mesh c) Baffle and Radial Reflector Mesh d) Axial Reflector

  15. Le projet de Sorbonne Paris Cit est un des laurats de la deuxime vague des appels Ini a ves d'excellence lancs dans le cadre des Inves ssements d'avenir. Au total, 8 projets, dont 4 en Ile-de-France, ont t slec onns par un

    E-Print Network [OSTI]

    Powell, Geoffrey

    Le projet de Sorbonne Paris Cité est un des lauréats de la deuxième vague des appels Ini a ves d-économique. L'appel à projets Ini a ve d'excellence a été lancé par l'Etat en 2011 dans le cadre du programme capables de rivaliser avec les meil- leures universités du monde. Les ini a ves d'excellence "réuniront

  16. Universit Joseph Fourier Nattribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , entre ces vétérans et les soldats aguerris, je retrouve Bertrand (alias Babe, le touche à tout de l en moi. James, le soldat timide, dans le fond de tes salles de cours te dis merci. Et merci Thierry soldates venues de l'Est n'amènent pas avec elles leurs seuls souri

  17. prsente et soutenue publiquement par Joelle RIZK

    E-Print Network [OSTI]

    exergétiques 14 3. A real column design exergy optimization of a cryogenic air separation unit 16 Introduction analysis of a simple adiabatic column 23 3.2. Thermally coupled distillation column 28 3.2.1. Simulation conditions d'échanges dans les colonnes de distillation diabatiques ­ Etude de la distribution des fluides

  18. Collge doctoral Nattribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Directeurs de thèse : Patrick ACHARD et Laurent FULCHERI Jury : M. Edward McRAE.........................................................................Président / Rapporteur M. Pierre LE CLOIREC.................................................................................. Examinateur M. Patrick ACHARD

  19. presentee par EMMANUEL FAVRE-NICOLIN

    E-Print Network [OSTI]

    Boyer, Edmond

    m'ont certainement donn´e le go^ut de la connaissance, mon fr`ere et ma soeur qui sont des exemples

  20. Fonctions et passage de paramtre par rfrence

    E-Print Network [OSTI]

    Lacroix, Mathieu

    de la variable locale dans la fonction appelée ne modifie la variable passée en paramètre, parce que rajouter le caractère & entre le type et le nom du paramètre. Ainsi, l'exécution du code : 1 void change

  1. cole Normale Suprieure de Cachan Prsente par

    E-Print Network [OSTI]

    m'avoir fait comprendre la stéréorectification (enfin!). Merci aussi à Nicolas, parce que la 3D sans; · 255009 lignes de code; · 26 programmes; · 11 cahiers; · 25 stylos et crayons divers; · 1350 litres de thé

  2. Habilitation Diriger des Recherches Prsente par

    E-Print Network [OSTI]

    Boyer, Edmond

    ...................................................................................................... 17 Mixed sensor noise evaluation de l'Etat Condensé ­ CEA Saclay Superconducting-magnetoresistive sensor: Reaching the femtotesla .................................................................................................................................5 Magnetic sensors

  3. Collge doctoral N attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Express PCI-SIG RenderMan Pixar Animation Studios OpenGL, OpenGL ES Silicon Graphics Incorporated Sony, PlayStation Sony Corporation Sun, VIS Sun Microsystems, Inc. Crusoe, Efficeon, Transmeta Transmeta

  4. ISN : 02-88 presentee par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    nucleaires et developpement durable 7 1.1 Le probleme actuel de la gestion des dechets nucleaires perspectives energetiques mondiales d'ici 2050 . . . . . . . . . . . . . 9 1.2.1 Contexte energetique global

  5. : 44-2010 Anne 2010 Dlivre par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    publiés Rafik Dey, Jacques Bodennec, Mouh Ouladj Mameri, and Pierre Pernin Free-living freshwater amoebae Letters (2008). Articles soumis * Rafik Dey, J. Bodennec, M. Mameri, and P. Pernin Occurrence

  6. LE CONTRLE EXTERNE DES ASSOCIATIONS PAR LES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , which can be used equally to evaluate public policies, - an external control through new rules of accountancy of the public subsidies, This article shows that the management control can influence financial to internal users like managers. Mots clés. - Secteur public, contrôle externe, association, gestion

  7. Astronomie, écologie et poésie par Hubert Reeves

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    Hubert ReevesL'astrophysicien donne une conférence puis s'entretient avec l'écrivain François Bon autour de :"Astronomie, écologie et poésie"Pour plus d'informations : http://outreach.web.cern.ch/outreach/FR/evenements/conferences.htmlNombre de places limité. Réservation obligatoire à la Réception du CERN : +41 22 767 76 76  Soirée diffusée en direct sur le Web : http://webcast.cern.ch/      

  8. ANALYSE DE FOURIER par Laurent LAZZARINI

    E-Print Network [OSTI]

    Lazzarini, Laurent

    ^itre, et que cette science doit toujours conserver : ces ´el´ements fondamentaux sont ceux qui se´en´erale, repr´esente aussi le mouvement de la lumi`ere dans l'atmosph`ere, qu'elle d´etermine les lois de la, les temp´eratures ; cette science difficile se forme avec lenteur, mais elle conserve tous les

  9. ANALYSE DE FOURIER par Laurent LAZZARINI

    E-Print Network [OSTI]

    Lazzarini, Laurent

    cette science doit toujours conserver : ces 'el'ements fo* *ndamentaux sont ceux qui se reproduisent'en'* *erale, repr'esente aussi le mouvement de la lumi`ere dans l'atmosph`ere, qu'elle d'etermine les lo* *is les temps* *, les espaces, les forces, les temp'eratures ; cette science difficile se forme avec

  10. SPECTROMTRE STELLAIRE MULTICANAL Par LAWRENCE MERTZ,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    An interferometer has been built in order to apply Dr Fellgett's technique to stellar spectrometry in the visible filter. The path difference can be varied by 175 03BB at 4 000 Å. In order to reduce scintillation noise

  11. NNT : 2013 EMSE 0711 prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    developed blends of poly(3,4-ethylenedioxythiophene) doped with tosylate (PEDOT:TOS) and the hydrogel mobility in comparison with the neat PEDOT:TOS. We tel-00968227,version1-31Mar2014 #12;ii were able to tune the value of ion mobility by adjusting the relative ratio of the hydroscopic phase to PEDOT:TOS. Finally I

  12. PARS II Course Descriptions | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM PolicyOfEnergyOutreach toOverviewOverview P - . .

  13. PARS II Course Registration | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM PolicyOfEnergyOutreach toOverviewOverview P - .

  14. NNT : 2013 EMSE 0702 prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    » Spécialité : Sciences et génie de l'environnement ELECTROPLATING WASTEWATER POLISHING IN CONSTRUCTED WETLAND Department Doctoral thesis Electroplating wastewater polishing in constructed wetland systems Adam SOCHACKI ...................................................................................................................3 3 Origin and treatment of electroplating wastewater

  15. PARS II Training | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOilNEWResponse toOctoberMultifamily Landlords1Reality | 2. OMB

  16. Integrated LED-based luminare for general lighting

    DOE Patents [OSTI]

    Dowling, Kevin J.; Lys, Ihor A.; Roberge, Brian; Williamson, Ryan C.; Roberts, Ron; Datta, Michael; Mollnow, Tomas; Morgan, Frederick M.

    2013-03-05T23:59:59.000Z

    Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing.

  17. Optical durability testing of candidate solar mirrors

    SciTech Connect (OSTI)

    Jorgensen, G.; Kennedy, C.; King, D.; Terwilliger, K.

    2000-03-24T23:59:59.000Z

    Durability testing of a variety of candidate solar reflector materials at outdoor test sites and in laboratory accelerated weathering chambers is the main activity within the Advanced Materials task of the Concentrated Solar Power (CSP) Program. Outdoor exposure testing (OET) at up to eight outdoor, worldwide exposure sites has been underway for several years. This includes collaboration under the auspices of the International Energy Agency (IEA) Solar Power and Chemical Energy Systems (SolarPACES) agreement. Outdoor sites are fully instrumented in terms of monitoring meteorological conditions and solar irradiance. Candidate materials are optically characterized prior to being subjected to exposure in real and simulated weathering environments. Optical durability is quantified by periodically re-measuring hemispherical and specular reflectance as a function of exposure time. By closely monitoring the site- and time-dependent environmental stress conditions experienced by the material samples, site-dependent loss of performance may be quantified. In addition, accelerated exposure testing (AET) of these materials in parallel under laboratory-controlled conditions may permit correlating the outdoor results with AET, and subsequently predicting service lifetimes. Test results to date for a large number of candidate solar reflector materials are presented in this report. Acronyms are defined. Based upon OET and AET results to date, conclusions can be drawn about the optical durability of the candidate reflector materials. The optical durability of thin glass, thick glass, and two metallized polymers can be characterized as excellent. The all-polymeric construction, several of the aluminized reflectors, and a metallized polymer can be characterized as having intermediate durability and require further improvement, testing and evaluation, or both.

  18. Low-Cost Self-Cleaning Reflector Coatings for CSP Collectors- FY13 Q2

    Broader source: Energy.gov [DOE]

    This document summarizes the progress of this ORNL project, funded by SunShot, for the second quarter of fiscal year 2013.

  19. WhiteOptics' Low-Cost Reflector Composite Boosts LED Fixture Efficiency

    Broader source: Energy.gov [DOE]

    With the help of DOE funding, WhiteOptics has developed a composite coating that can be used to improve efficiency in backlit, indirect, and cavity-mixing LED luminaire designs by maximizing light reflection and output. The highly diffuse coating, which is based on a novel high-reflectance particle technology, allows for uniform distribution of light without exaggerating the point-source nature of the LEDs, and is intended to offer an overall system cost-improving solution for LED optics.

  20. Algorithms for Rapid Characterization and Optimization of Aperture and Reflector Antennas

    E-Print Network [OSTI]

    Densmore, Arthur Charles

    2014-01-01T23:59:59.000Z

    integer z_lda, z_ldb, z_ldc; lapack::doublecomplex * z_a, *b, &z_ldb, z_beta, z_c, & z_ldc ); zgesv_( &z_n, &z_nrhs, z_doublecomplex *c, int *ldc, int transa_len, int transb_len);

  1. Benchmark Evaluation of Uranium Metal Annuli and Cylinders with Beryllium Reflectors

    SciTech Connect (OSTI)

    John D. Bess

    2010-06-01T23:59:59.000Z

    An extensive series of delayed critical experiments were performed at the Oak Ridge Critical Experiments Facility using enriched uranium metal during the 1960s and 1970s in support of criticality safety operations at the Y-12 Plant. These experiments were designed to evaluate the storage, casting, and handling limits of the Y-12 Plant and to provide data for the verification of cross sections and calculation methods utilized in nuclear criticality safety applications. Many of these experiments have already been evaluated and included in the International Criticality Safety Benchmark Evaluation Project (ICSBEP) Handbook: unreflected (HEU-MET-FAST-051), graphite-reflected (HEU-MET-FAST-071), and polyethylene-reflected (HEU-MET-FAST-076). Three of the experiments consisted of highly-enriched uranium (HEU, ~93.2% 235U) metal parts reflected by beryllium metal discs. The first evaluated experiment was constructed from a stack of 7-in.-diameter, 4-1/8-in.-high stack of HEU discs top-reflected by a 7-in.-diameter, 5-9/16-in.-high stack of beryllium discs. The other two experiments were formed from stacks of concentric HEU metal annular rings surrounding a 7-in.diameter beryllium core. The nominal outer diameters were 13 and 15 in. with a nominal stack height of 5 and 4 in., respectively. These experiments have been evaluated for inclusion in the ICSBEP Handbook.

  2. Project Profile: Predictive Physico-Chemical Modeling of Intrinsic Degradation Mechanisms for Advanced Reflector Materials

    Broader source: Energy.gov [DOE]

    NREL, under the Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar (PREDICTS) Program will be developing a physics-based computational degradation model to assess the kinetic oxidation rates; realistic model light attenuation and transport; and multi-layer treatment with variable properties Simulation based experimental design.

  3. MICROMORPH n-i-p TANDEM CELLS WITH ASYMMETRIC INTERMEDIATE REFLECTORS F.-J. Haug1

    E-Print Network [OSTI]

    Floreano, Dario

    (EPFL), Photovoltaics and Thin Film Electronics Laboratory, Rue A.-L. Breguet 2, 2000 Neuchâtel, Switzerland 2 now at University of New South Wales, School of Photovoltaic and Renewable Energy Engineering with size of typically 0.25 cm2 . The best cell among an array of 16 devices on the 4x4 cm2 sample area

  4. A Novel Leaky-Wave Retrodirective Reflector Using Short/Matched Terminations

    E-Print Network [OSTI]

    Itoh, Tatsuo

    of heterodyne mixing to reflect the signal to any arbitrary angle by varying the LO frequency of the mixer [6 This section presents mono-static (Rx and Tx antennas collocated) transmission (S21) measurements of the RCS

  5. Project Profile: Low-Cost Self-Cleaning Reflector Coatings for CSP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | DepartmentEnergyThermalDepartment

  6. Project Profile: Next-Generation Low-Cost Reflector | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 |of Energy TEES logo TexasEnergy SNL

  7. Recovery Act: Low-Cost, Highly Lambertian Reflector Composite For Improved

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilAElectronicCurvesSpeedingScientificof ScientificQ LA-UR-RaymondConnect

  8. Advanced Reflector and Absorber Materials (Fact Sheet), Thermal Systems Group: CSP Capabilities (TSG)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973 1BP-14 PowerAdvanced ModelingNuclear ReactorIdeally, we

  9. GNRATEUR DE FLASHES FONCTIONNANT PAR EXPLOSION DE FILS MTALLIQUES Par M. JEAN RIPOCHE,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    conducteurs coaxiaux (75 MD). A travers une résistance de charge Ra la batterie de condensateurs est portée of the inductance of electrical circuit (L = 1.25 03BCH), with the oscillograms obtained. During the explosion de courant de choc. s : shunt coaxial. Rd : résistance de décharge. Re : résistance de charge. E

  10. REPORT PAR SOUDURE EUTECTIQUE : KNS648-2 Machine de report de composants par soudure eutectique

    E-Print Network [OSTI]

    Ingrand, François

    Chuck temperature max of 550°C Adjustable forces by mass Time control Manual displacement Microscope elements are in contact with temperature and pressure control This machine allows the pick and place of chips on different substrates by creating a eutectic welding. With the help of a binocular it aligns

  11. Optimisation par algorithme gntique de la maintenance prventive dans un contexte de modlisation par modles

    E-Print Network [OSTI]

    Boyer, Edmond

    would be to apply a preventive maintenance in order to limit or even prevent system breakdowns (failures). But if the preventive maintenance is not properly regulated, we risk to face excessive costs and unnecessary system downtime. Given this situation, we should so consider establishing preventive maintenance strategies

  12. ORNL 2010-G01024/jcn UT-B ID 200701977

    E-Print Network [OSTI]

    is composed of calcium aluminate cement, phenolic resin, hydratable alumina, and an organic polymer binder

  13. Composites comprising silicon carbide fibers dispersed in magnesia-aluminate matrix and fabrication thereof and of other composites by sinter forging

    DOE Patents [OSTI]

    Panda, Prakash C. (Ithaca, NY); Seydel, Edgar R. (Ithaca, NY); Raj, Rishi (Ithaca, NY)

    1989-10-03T23:59:59.000Z

    A novel ceramic-ceramic composite of a uniform dispersion of silicon carbide fibers in a matrix of MgO.multidot.nAl.sub.2 O.sub.3 wherein n ranges from about 1 to about 4.5, said composite comprising by volume from 1 to 50% silicon carbide fibers and from 99 to 50% MgO.multidot.nAl.sub.2 O.sub.3. The composite is readily fabricated by forming a powder comprising a uniform dispersion of silicon carbide fibers in poorly crystalline phase comprising MgO and Al.sub.2 O.sub.3 in a mole ratio of n and either (a) hot pressing or preferably (b) cold pressing to form a preform and then forging utilizing a temperature in the range of 1100.degree. C. to 1900.degree. C. and a strain rate ranging from about 10.sup.-5 seconds .sup.-1 to about 1 seconds .sup.-1 so that surfaces cracks do not appear to obtain a shear deformation greater than 30%.

  14. High temperature oxidation and NaCl-induced accelerated corrosion of hot-dip aluminized 9Cr-1Mo and 310 stainless steel

    E-Print Network [OSTI]

    Tsaur, Charng-Cheng

    2005-02-17T23:59:59.000Z

    investigated by weight gain kinetics, metallographs, depths of attack, metal losses, and X-ray analyses. The results of 310SS deposited with salt mixtures show that weight gain kinetics in simple oxidation reveals a steady-state parabolic rate law after 3 hr...

  15. Maximum Fuel Utilization in Advanced Fast Reactors without Actinides Separation

    E-Print Network [OSTI]

    Heidet, Florent

    2010-01-01T23:59:59.000Z

    surrounded by a thin radial reflector followed by a shield –Radial shield Enriched fuel Large radial reflector Radialshield Small radial reflector Radial blanket Enriched fuel

  16. Integration of Self-Assembled Porous Alumina and Distributed Bragg Reflector for Light Trapping in Si Photovoltaic Devices

    E-Print Network [OSTI]

    Sheng, Xing

    Light trapping is an important issue for thin film silicon photovoltaic cells due to the limited absorption coefficient for near infrared light. In this letter, we present a photonic structure that combines porous anodic ...

  17. PRODUCTION DES GRANDES VITESSES ANGULAIRES (1); Par M. MAURICE LEBLANC.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    rotation moindre (~ - x) et en une vitesse de précession x déter- mine la production d'un couple tendant à'équilibre dynamique sera donc : (1) Voir ce volulne, p. 282. Article published online by EDP Sciences and available Supposons maintenant le rotor mal équilibré. Son centre de figure y sera toujours sur la tangente à l'

  18. Scheduling on the MasPar SIMD parallel computer 

    E-Print Network [OSTI]

    Perkins, Keith Douglas

    1995-01-01T23:59:59.000Z

    , or 10 (b) have finished communicating with the task. 3. The processor must not be currently executing a task. The schedule for this task graph is shown in Figure 3. This schedule shows two processors, PO and Pl, and the units of time, T. In Figure 2... queue and the precedence constraints, Figure 5 shows the time, T, when each task is scheduled onto processors PO and Pl. 13 14 12 13 10 6 7 9 5 Fig. 4. A task graph labeled by using the Coffman/Graham algorithm. P1 13 ? ? 9 7 5 3 1 P0 14 12 11...

  19. INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLE Nattribu par la bibliothque

    E-Print Network [OSTI]

    Boyer, Edmond

    ;#12;! " # " $ " # % & %' ( % ' " ( ! ) * $ " + , " - .+ , / ) .+ 0 $ #$ $ " " 1 .+ ' .+ 2 0 !+ , ) - & " 1 3 .+ 4 5(', (%'$ / 6 " # " ) %' ($ 6 1 $ ) 1 + .+ 0 7 80 4 % #$ & $ $ " + 4 1 + . 2 0 $ 6 - %:; # " $ & $ . 9 ( $ ? 2 0 $ 8 $ 0 * $ ' 9 $ * 9 @ $ 6 " $ ' 0 + . - + . 3 A $ $ $ 2 $ ) " " ! 9 $ 4 " B ) 1 - 6

  20. Mesure assiste par miniordinateur du pouvoir thermolectrique de petits chantillons

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    de mesure doit présenter une impédance d'entrée très supérieure à celle des échantillons, sans parasites (effets Peltier locaux dûs à des contraintes sur les fils de thermocouple) impose le relevé d

  1. LA MTHODE INONDABILIT : APPROPRIATION PAR LES HYDROLOGUES DE LA VULNRABILIT

    E-Print Network [OSTI]

    Boyer, Edmond

    . et Peltier, A., L'Harmattan #12;INTÉGRER LA VULNÉRABILITÉ DANS LA MÉTHODE INONDABILITÉ2 de personnes forte ampleur, du type de celle de la Seine en 1910, si elle revenait aujourd'hui à Paris engendrerait

  2. INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLE N attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . . . . . . . . . . . . . . . . . . .. Turbine à gaz . II.1 Turbine à gaz à circuit ouvert II.1.1 Principes....... II.1.2 i\\mélioration du rendement II.1.3 Cycle réel d'une installation II.2 Turbine à gaz à circuit fermé II 2 1 P" .. . rln Introduction . II Turbine hydraulique . II.1 Les différentes parties d'une turbine hydraulique .. II.2 Turbines

  3. Dlivr par l'UNIVERSIT PAUL VALERY MONTPELLIER 3

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for the didactics of "interculturation" Discourses about inter-societal relationship in textbooks for French as a foreign / second language (Greece, Lebanon, Morocco) In the field of second language and culture didactics didactic theories and classroom practices. Cross-cultural approaches presently need the identification

  4. ACADMIE DE BORDEAUX N attribu par la Bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    de : M. A. GUESSAB Prof-Université de Pau Directeur de Thèse M. C. GOUT HDR-Lab. de Mathématiques de l'INSA M. J.L. GOUT Prof-Université de Pau M. D. SBIBIH Prof-Université Mohammed Premier -2006- 1'être rapporteur de cette thèse. Qu'ils trouvent ici toute ma reconnaissance. Je remercie Monsieur J.L. GOUT et

  5. UNIVERSITE MONTPELLIER II N attribu par la bibliothque

    E-Print Network [OSTI]

    Boyer, Edmond

    organisées depuis trois ans. Merci donc à Sylvie Delisle, à Jean-Loup Montenat et à Claude Gout, de Total, à

  6. N attribu par la bibliothque pour obtenir le grade de

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    NASLOT, toute l'équipe de l'atelier. Un grand merci aussi à toux ceux qui ont su égailler les journées au

  7. Colorado 11/2002 3 mono SPI ESTES PAR!,

    E-Print Network [OSTI]

    , 0:34 STERUNG 0'26 -6.54 LAMAR 0~1 O~0 0:15 0:2 0:20 0:66 0:92 SPRINGFIELD CORTEZ 0:49-6.10 TRINIDAD·92 0*.47 0*.09 BURUNGT~N 0*.16 0*.690*.14 CHEYENNE WE 0·66 0*.650*.25 0'15 0*.441 LAMAR 0*.27 0*.65 O:29 -6.93 -6.9 0.0.. ~ CHEYENNE WE -6.02 LAMAR -6.12 BURIJNGT~N -6.78 -6.77 -6.25 -6.77 AKRON -6

  8. ED n431 : ICMS N attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - lotage,contrôle, véhicule aérien autonome, véhicule terrestre autonome, soldat, fantassin, filtre de

  9. Dlivr par UNIVERSTIT PAUL-VALRY-MONTPELLIER III

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ,version1-17Apr2014 #12;Résumé en français Ce travail présente le soldat volontaire dans l'armée grecque

  10. CPC, des threads coopratifs par passage de continuations Gabriel Kerneis,

    E-Print Network [OSTI]

    Chroboczek, Juliusz - Laboratoire Preuves, Programmes et Systèmes, Université Paris 7

    'utiliser un -calcul avec affectations [26] et des variantes d'IMP [36] sous forme de règles de réécriture [19

  11. SUR LES DILECTRIQUES HTROGNES; PAR M. A. HESS.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ~'~,~ ... lenrs pouvoirs inducteurs et r, t,', r~ ... leurs résis- tances spécifiqu es : Dans le cas particulier

  12. Histoire(de(l'Astronomie( par(Thomas(Widemann((

    E-Print Network [OSTI]

    Demoulin, Pascal

    (­(De(la(Renaissance(au(XVIIe(siècle( ! ! ! ! ! ( 1480I1620( I(I(La(Révolution(copernicienne( (Nicolas(Copernic((1473I1543)( (Tycho(Brahé((1546I1601(Atahualpa(sur(ordre(de(Pizarro( 1541(I(Calvin((1509I1564)(Institution(de(la(religion(Chrétienne((France)( 1543(I(Copernic

  13. Habitat et dveloppement durable LES PERSPECTIVES OFFERTES PAR LE SOLAIRE

    E-Print Network [OSTI]

    Boyer, Edmond

    'Etudes de la Pollution Atmosphérique CEA : Commissariat à l'Energie Atomique EDF : Electricité de France GDF responsables des ministères chargés de l'Environnement, de l'Industrie, de la recherche, du Plan et du logement Construction. Emissions de particules ETUDE PROSPECTIVE SUR LES �MISSIONS DE PARTICULES PRIMAIRES EN FRANCE � L

  14. Scheduling on the MasPar SIMD parallel computer

    E-Print Network [OSTI]

    Perkins, Keith Douglas

    1995-01-01T23:59:59.000Z

    scheduling, parallel and distributed operating systems, and memory manage- ment [5, 7, 14]. Overall, parallel systems have improved since their inception. Many special cases have been identified, and some gcncral case heuristics have been built that apply... be allocated and freed dynamically, edge costs cannot be completely calculated prior to task 11 3 3 3 3 3 3 3 3 5 8 5 3 0 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 4 4 4 5 6 7 T 1 2 3 4 5 6 7 8 9 10 11 12 13 14 'l5 13 17 18 19 20 21 22 23 Fig. 3. The ffnal schedule...

  15. THESE DE L'UNIVERSITE DE LYON Delivree par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    tests men´es sur diverses formulations de liposomes contenant de la doxorubicine (dox) ont montr´es une haute corr´elation entre le taux de largage de dox et la DC permettant de conclure que la cavitation hydroxyles et la lib´eration de dox a ´egalement ´et´e explor´e. Les exp´eriences r´ealis´ees ont permis de s

  16. UNIVERSITE DE GRENOBLE No attribue par la biblioth`eque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Fourier) Pr´esidente Olga Kouchnarenko (Pr. Universit´e de Franche-Comt´e) Rapporteur Thomas Jensen Gilles Barthe (Pr. IMDEA Software Faculty) Examinateur Micha¨el P´erin (MCF. Universit´e Joseph Fourier

  17. cole Doctorale S.P.M.I.I. Prsente par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    modeling, the propagation of propane-air flames through stratified mixture field under laminar propagation. The flow of propane-air mixture is seeded with olive oil particles and anisole vapor, illuminated combustion requires deeper knowledge about the propagation of flame through stratified mixture field. So

  18. UNIVERSIT de GRENOBLE No attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'Audiovisuel (INA) 2 SONY CSL-Paris & Lip6 (Paris 6) Institut National de l'Audiovisuel Direction de la Recherche 4, avenue de l'Europe ­ 94 366 Bry sur Marne {jean, remi}@ina.fr, pachet@csl.sony.fr Résumé Dans le contexte

  19. anim par harri: Topics by E-print Network

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

    Management and Restoration Websites Summary: Ma, Harris, Gao and Ding QUARTERLY PROGRESS REPORT October 012009 - December312009 Recycling its proper management and recycling...

  20. COPRODUCTION DE LA QUALITE Colloque organis par le LERASS Toulouse

    E-Print Network [OSTI]

    Boyer, Edmond

    Entreprises, Centre de Recherche en Gestion Rue Claude Bloch, BP 5160, 14075 CAEN cedex 02.31.56.65.36 - fax firmas debido a la generalización de dispositivos normativos en el dominio de la calidad sirve de base CLAVE Calidad, normalización, red, transacción de costes economicos, teoria de las convenciones ANALYSE

  1. Dtection de Fautes par Rseaux Baysiens dans les Procds Multivaris

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    between the usual detection methods that are the multivari- ate control charts (Hotelling's T2 , MEWMA Discriminante KEYWORDS: SPC, multivariate, detection, bayesian network, T2 , MEWMA, Discriminant Analy- sis

  2. Dtermination des formes modulaires par les valeurs de

    E-Print Network [OSTI]

    Royer, Emmanuel

    (resp. d'ordre 3) de . Ã? titre d'exemple, on a #23; 2 0 (m) #1; = 8 pjm #2; 1 + 1 p #1;#3; sinon et #23; 3 0 (m) #1; = 8 pjm #2; 1 + 3 p #1;#3; sinon. [Miy89, theorem 4.2.7] Ce

  3. CARACTRISATION DES FORMES MODULAIRES PAR DES VALEURS DE FONCTIONS L

    E-Print Network [OSTI]

    Royer, Emmanuel

    d'ordre 2 (resp. d'ordre 3) de . Ã? titre d'exemple, on a #23; 2 0 (m) #1; = 8 pjm #2; 1 + 1 p #1;#3; sinon et #23; 3 0 (m) #1; = 8 pjm #2; 1 + 3 p #1;#3; sinon. [Miy

  4. UNIVERSITE DE CAEN BASSE-NORMANDIE attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of double beta decay and in particular the search for neutrinoless double beta decay (0). The quantityNEMO experiment aims to reach a sensitivity up to 10 26 years on the half-life of neutrinoless double beta decay

  5. Contraintes sur la Distribution de Masse des Galaxies par Cisaillement

    E-Print Network [OSTI]

    th`ese Marceau Limousin Toulouse, le 18 Juin 2004 Directeur de th`ese : Jean-Paul Kneib Laboratoire d

  6. Conception de systmes transac-tionnels accessibles par le Web

    E-Print Network [OSTI]

    Spino, Claude

    Analyse Analyse des problèmes et solutions Analyse des besoins client Applications .NET Planification et'applications multiprocessus Orienté objet Optimisation d'interfaces HTML/ ASPX et de code serveur (VB.NET) pour un réseau'installation (C++, Visual Studio, .Net) Interfaces en C++ et d'objets COM Applications Web mutli-usagers Création

  7. N d'ordre : 490 IVS prsente par

    E-Print Network [OSTI]

    Boyer, Edmond

    Recherche, HDR, Université Paris13 PRÉTEUX Françoise Professeur, TELECOM & Management SudParis Examinateurs-Étienne Invité : LAMBERT Claude Médecin, Centre Hospitalier Universitaire de Saint-Étienne tel-00799838,version1

  8. N d'ordre : 490 IVS prsente par

    E-Print Network [OSTI]

    Boyer, Edmond

    Recherche, HDR, Université Paris13 PRÉTEUX Françoise Professeur, TELECOM & Management SudParis Examinateurs-Étienne Invité : LAMBERT Claude Médecin, Centre Hospitalier Universitaire de Saint-Étienne tel-00509768,version1

  9. Coll`ege doctoral attribue par la biblioth`eque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    leurs connaissances et pour leur aide amicale. Messieurs Philippe Marcille, Jean-Claude Montgermont et

  10. Source Revue Archologique Sign par Franoise DUMASY -Universit Paris I

    E-Print Network [OSTI]

    situation à l'écart de lieux connus. Ajoutons d'ailleurs qu'il aurait été très utile de reporter dans les titres des articles les numéros des sites tels qu'ils figurent dans l'inventaire, car le lecteur met remarquable travail de coordination fait pour les textes aurait-il pu s'étendre également aux figures qui

  11. INSTITUT POLYTECHNIQUE DE GRENOBLE N attribu par la bibliothque

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and plasticity couplings in a 7xxx aluminium alloy: application to thermomechanical treatments for distortion presentation A.1. Abstract 7xxx aluminium alloys are high strength alloys mainly used for aerospace Titre : Couplages entre précipitation et plasticité dans un alliage d'aluminium 7xxx : application à des

  12. INTGRATION DES INDICATEURS DE PERFORMANCE LA GESTION PAR

    E-Print Network [OSTI]

    Boyer, Edmond

    DE LA VERSION 2000 DE LA NORME ISO 9001 Luc Godin, M.Sc. Hélène Bergeron, D.Sc. Gestion Chargé de norme ISO 9001:2000. ABSTRACT Since the adoption of the 2000 version of ISO 9001, organizations wishing to their process management in adopting the ISO 9001:2000. Mots clés : Indicateurs de performance, processus, ISO

  13. PEP TALK - Policy - EVMS - PARS Update - Mel Frank, Chief, Project

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM PolicyOfEnergyOutreach toOverviewOverview PSystems

  14. Working in par tnership Upper Atlas region, Morocco

    E-Print Network [OSTI]

    maladies émergentes de l'Océan Indien) · Chikungunya control #12;··· North Africa and Middle East Africa and the Middle East continued. In Morocco, where cooperation has been very lively since the IRD

  15. Project Assessment and Reporting System (PARS II) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy: ThomasDepartment ofThis weekSpecificThat SaveForRM SafetyJuly

  16. Project Assessment and Reporting System (PARS II) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy: ThomasDepartment ofThis weekSpecificThat SaveForRM SafetyJulyWelcome

  17. Design Specifications for the PARS II Extraction Utility | Department of

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0andEnergyGlobal Nuclearof aDepartment- theDepartmentEnergy Design

  18. UN EXEMPLE DE DTERMINATION PAR APPROXIMATION DE L'METTEUR D'UN NOUVEAU SPECTRE PRODUIT PAR DES MOLCULES ORGANIQUES

    E-Print Network [OSTI]

    Boyer, Edmond

    ://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use

  19. Safety and core design of large liquid-metal cooled fast breeder reactors

    E-Print Network [OSTI]

    Qvist, Staffan Alexander

    2013-01-01T23:59:59.000Z

    pitch 30 x Rod Diameter Radial reflectors 2 assembly rows (?mechanical movement of a radial reflector [16]. In the early

  20. Midtemperature solar systems test faclity predictions for thermal performance based on test data: Solar Kinetics T-700 solar collector with glass reflector surface

    SciTech Connect (OSTI)

    Harrison, T.D.

    1981-03-01T23:59:59.000Z

    Sandia National Laboratories, Albuquerque (SNLA), is currently conducting a program to predict the performance and measure the characteristics of commercially available solar collectors that have the potential for use in industrial process heat and enhanced oil recovery applications. The thermal performance predictions for the Solar Kinetics solar line-focusing parabolic trough collector for five cities in the US are presented. (WHK)