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Note: This page contains sample records for the topic "lambertian reflector composite" from the National Library of EnergyBeta (NLEBeta).
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1

How to assess light trapping structures versus a Lambertian Scatterer for solar cells ?  

E-Print Network (OSTI)

How to assess light trapping structures versus a Lambertian Scatterer for solar cells ? Christian trapping nanostructures for solar cells, which we call the light trapping efficiency (LTE). The LTE has in thin Si solar cells by diffuse back reflectors," Proceedings of the 15th IEEE Photovoltaic Specialists

2

Composition pulling effect and strain relief mechanism in AlGaN/AlN distributed Bragg reflectors  

SciTech Connect

We report on the composition pulling effect and strain relief mechanism in AlGaN/AlN distributed Bragg reflectors (DBRs) grown on GaN template/{alpha}-Al{sub 2}O{sub 3}(0001) by metal organic chemical vapor deposition. The reciprocal space mapping contours reveal that these DBRs are coherently grown. Cross-section transmission electron microscopy image of the AlGaN/AlN DBRs and the energy-dispersive x-ray analysis indicate that an AlGaN layer with gradient Al composition is located between the Al{sub 0.4}Ga{sub 0.6}N and AlN layers along the [0001] direction. It is attributed to the fact that Ga atoms in AlGaN are pulled and segregated to the upper layer by the strain. The density of strain energy is estimated to reduce more than one order by forming this quasi-three-sublayer structure comparing to the designed bi-sublayer structure.

Liu, B.; Zhang, R.; Ji, X. L.; Fu, D. Y.; Xie, Z. L.; Chen, D. J.; Chen, P.; Jiang, R. L.; Zheng, Y. D. [Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093 (China); Zheng, J. G. [California Institute for Telecommunications and Information Technology, University of California, Irvine, California 92697-2800 (United States)

2011-06-27T23:59:59.000Z

3

WhiteOptics' Low-Cost Reflector Composite Boosts LED Fixture Efficiency  

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

4

EA-1911: Energy Conservation Standards for Certain Reflector, Elliptical Reflector, and Bulged Reflector Incandescent Lamps  

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

This EA will evaluate the environmental impacts of a proposal to amend energy conservation standards for Certain Reflector, Elliptical Reflector, and Bulged Reflector Incandescent Lamps.

5

Nuclear reactor reflector  

DOE Patents (OSTI)

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.

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

1994-01-01T23:59:59.000Z

6

The Effect of Non-Lambertian Surface Reflectance on Aerosol Radiative Forcing  

SciTech Connect

Surface reflectance is an important factor in determining the strength of aerosol radiative forcing. Previous studies of radiative forcing assumed that the reflected surface radiance is isotropic and does not depend on incident illumination angle. This Lambertian reflection model is not a very good descriptor of reflectance from real land and ocean surfaces. In this study we present computational results for the seasonal average of short and long wave aerosol radiative forcing at the top of the atmosphere and at the surface. The effect of the Lambertian assumption is found through comparison with calculations using a more detailed bi-direction reflectance distribution function (BRDF).

Ricchiazzi, P.; O'Hirok, W.; Gautier, C.

2005-03-18T23:59:59.000Z

7

Advanced Manufacture of Reflectors  

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

8

Glass for Reflectors  

Science Journals Connector (OSTI)

... "for the 4-foot disc of glass for the Paris reflector, in place of that which has so recently resulted in ... in place of that which has so recently resulted in failure, the St. Gobain Glass Company require twelve months' time to perfect (although, be it remembered, the quality ...

HENRY BESSEMER

1878-01-24T23:59:59.000Z

9

Advanced Manufacture of Reflectors  

SciTech Connect

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

Angel, Roger [University of Arizona

2014-12-17T23:59:59.000Z

10

Distributed Bragg Reflectors With Reduced Optical Absorption  

DOE Patents (OSTI)

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.

Klem, John F. (Albuquerque, NM)

2005-08-16T23:59:59.000Z

11

Solar central receiver heliostat reflector assembly  

DOE Patents (OSTI)

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.

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

1980-01-01T23:59:59.000Z

12

Dual annular rotating "windowed" nuclear reflector reactor control system  

DOE Patents (OSTI)

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.

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

13

SunShot Initiative: Advanced Manufacture of Reflectors  

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

Advanced Manufacture of Advanced Manufacture of Reflectors to someone by E-mail Share SunShot Initiative: Advanced Manufacture of Reflectors on Facebook Tweet about SunShot Initiative: Advanced Manufacture of Reflectors on Twitter Bookmark SunShot Initiative: Advanced Manufacture of Reflectors on Google Bookmark SunShot Initiative: Advanced Manufacture of Reflectors on Delicious Rank SunShot Initiative: Advanced Manufacture of Reflectors on Digg Find More places to share SunShot Initiative: Advanced Manufacture of Reflectors on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

14

Lighting Group: Sources and Ballasts: LED Reflector Lamp  

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

LED Reflector Lamp LED Reflector Lamp LED Reflector Lamp Objective LED reflector lamp The goal of this project is to develop a revolutionary new reflector lamp which offers many advantages over current incandescent reflector lamps, including: three times greater efficiency ten times the rated life greater optical and performance properties use of light emitting diodes (LEDs) to generate the light. Although LEDs have been commercially available since the late 1960Â’s, recent dramatic improvements in LED technology have led to white light devices with efficiencies that meet or exceed those of a standard incandescent lamp. This project will build upon these improvements to develop a new type of source for focusing light. Contact Information For more information on this project, please contact:

15

Impact of HFIR LEU Conversion on Beryllium Reflector Degradation Factors  

SciTech Connect

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.

Ilas, Dan [ORNL] ORNL

2013-10-01T23:59:59.000Z

16

Method of making reflecting film reflector  

DOE Patents (OSTI)

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.

Cottingham, James G. (Center Moriches, NY)

1980-01-01T23:59:59.000Z

17

Optical Durability of Candidate Solar Reflectors for Concentrating Solar Power  

SciTech Connect

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.

Kennedy, C. E.; Terwilliger, K.

2007-01-01T23:59:59.000Z

18

New Reflector CFLs that Can Take the Heat  

SciTech Connect

Reflector compact fluorescent bulbs (R-CFLs) are a wise choice for the energy savvy because they offer energy savings of up to 66 percent compared to incandescent reflectors. But some R-CFLs have suffered performance problems (including premature failure) when used in high-temperature environments, such as recessed downlight fixtures located in insulated ceilings with airtight housings. To help address this issue, the U.S. Dept. of Energy (DOE) is working with lamp manufacturers to improve the quality and performance of screw-based reflector CFLs in high-heat applications.

Vogt, Susan

2005-03-01T23:59:59.000Z

19

Solar cell comprising a plasmonic back reflector and method therefor  

DOE Patents (OSTI)

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.

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

2014-11-25T23:59:59.000Z

20

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

DOE Patents (OSTI)

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.

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

1994-03-29T23:59:59.000Z

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


21

STIFFENED SPRINGBACK REFLECTORS L.T. Tan and S. Pellegrino  

E-Print Network (OSTI)

STIFFENED SPRINGBACK REFLECTORS L.T. Tan and S. Pellegrino Department of Engineering, University plastic (CFRP). The whole structure is made as a single piece, without any expensive and potentially the reliability of the system. This paper proposes a modification of the original concept, based on the idea

Pellegrino, Sergio

22

Disordered animal multilayer reflectors and the localization of light  

Science Journals Connector (OSTI)

...the more weakly disordered guanine-cytoplasm...However, silvery protein structures around...system) are highly disordered and have sigma R...matrix models of protein-cytoplasm reflectors...stack model of a disordered animal multilayer...reflectivity spectrum of an ensemble (spatial) average...

2014-01-01T23:59:59.000Z

23

SunShot Initiative: Next-Generation Low-Cost Reflector  

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

Next-Generation Low-Cost Next-Generation Low-Cost Reflector to someone by E-mail Share SunShot Initiative: Next-Generation Low-Cost Reflector on Facebook Tweet about SunShot Initiative: Next-Generation Low-Cost Reflector on Twitter Bookmark SunShot Initiative: Next-Generation Low-Cost Reflector on Google Bookmark SunShot Initiative: Next-Generation Low-Cost Reflector on Delicious Rank SunShot Initiative: Next-Generation Low-Cost Reflector on Digg Find More places to share SunShot Initiative: Next-Generation Low-Cost Reflector on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

24

Design constraints on Cherenkov telescopes with Davies-Cotton reflectors  

E-Print Network (OSTI)

This paper discusses the construction of high-performance ground-based gamma-ray Cherenkov telescopes with a Davies-Cotton reflector. For the design of such telescopes, usually physics constrains the field-of-view, while the photo-sensor size is defined by limited options. Including the effect of light-concentrators in front of the photo sensor, it is demonstrated that these constraints are enough to mutually constrain all other design parameters. The dependability of the various design parameters naturally arises once a relationship between the value of the point-spread functions at the edge of the field-of-view and the pixel field-of-view is introduced. To be able to include this constraint into a system of equations, an analytical description for the point-spread function of a tessellated Davies-Cotton reflector is derived from Taylor developments and ray-tracing simulations. Including higher order terms renders the result precise on the percent level. Design curves are provided within the typical phase sp...

Bretz, Thomas

2013-01-01T23:59:59.000Z

25

Temperature and thermal stress distributions for the HFIR permanent reflector generated by nuclear heating  

SciTech Connect

The beryllium permanent reflector of the High Flux Isotope Reactor has the main functions for slowing down and reflecting the neutrons and housing the experimental facilities. The reflector is heated as a result of the nuclear reaction. Heat is removed mainly by the cooling water passing through the densely distributed coolant holes along the vertical or axial direction of the reflector. The reflector neutronic distribution and its heating rate are calculated by J.C. Gehin of the Oak Ridge National Laboratory by applying the Monte Carlo Code MCNP. The heat transfer boundary conditions along several reflector interfaces are estimated to remove additional heat from the reflector. The present paper is to report the calculation results of the temperature and the thermal stress distributions of the permanent reflector by applying the computer aided design code I-DEAS and the finite element code ABAQUS. The present calculation is to estimate the high stress areas as a result of the new beam tube cutouts along the horizontal mid-plane of the reflector of the recent reactor upgrade project. These high stresses were not able to be calculated in the preliminary design analysis in earlier 60`s. The heat transfer boundary conditions are used in this redesigned calculation. The material constants and the acceptance criteria for the allowable stresses are mainly based on that assumed in the preliminary design report.

Chang, S.J.

1998-04-01T23:59:59.000Z

26

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

E-Print Network (OSTI)

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 SOLAR CELLS The CdTe thin-film solar cell has a large absorption coefficient and high theoretical

Sites, James R.

27

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

DOE Patents (OSTI)

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.

Kare, Jordin T. (Pleasanton, CA)

1992-01-01T23:59:59.000Z

28

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

DOE Patents (OSTI)

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.

Kare, J.T.

1992-10-06T23:59:59.000Z

29

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

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

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

30

Benefit of Lunar Regolith on Reflector Mass Savings  

SciTech Connect

The 2004 NASA Vision for Space Exploration calls for the return of mankind to the moon by no later than 2020, in preparation for an adventure to Mars and beyond. An envisioned lunar outpost will provide living quarters for initially 5- 10 astronauts for up to 2 weeks, and latter for science experiments, and recovery of mineral and indigenous resources for the day-to-day operation and production of propellant. These activities would require electrical and thermal powers in the order of 10's - 100's of kilowatts 24/7. Potential power options include photovoltaic, requiring massive batteries or fuel cells for energy storage during the long nights on the moon, and nuclear reactor power systems, which are much more compact and operate independent of the sun. This paper examines the benefit of using the lunar regolith as a supplemental neutron reflector on decreasing the launch mass of the Sectored Compact Reactor (SCoRe-S), developed at the Institute for Space and Nuclear Power Studies. In addition to providing at least $2.00 of hot-clean excess reactivity at the beginning of life, various SCoRe-S concepts investigated in this paper are at least $1.00 sub-critical when shutdown, and when the bare reactor cores are submerged in wet sand and flooded with seawater, following a launch abort accident. Design calculations performed using MCNP5 confirmed that using lunar regolith as supplementary reflector reduces the launch mass of the SCoRe-S cores by {approx} 34% - 35%, or 150 - 200 kg, while satisfying the above reactivity requirements.

Hatton, Steven A.; El-Genk, Mohamed S. [Institute for Space and Nuclear Power Studies, University of New Mexico, Albuquerque, NM 87131-0001 (United States); Dept. of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, NM 87131-0001 (United States)

2007-01-30T23:59:59.000Z

31

Preparation of nuclear libraries with deterministic and stochastic methods for LWR reflectors  

SciTech Connect

The explicit reflector methodology is used in the system of codes CASMO-5 / SIMULATE-3 to include the reflector around the active core into the computational region and avoid adopting any ad-hoc or experimental albedo coefficients as boundary conditions. However, to complete the core calculation, a set of cross sections and discontinuity factors is needed for the reflector nodes and the accuracy of these nuclear parameters influences the final results, in particular along the peripheral regions of the core. In this paper the explicit reflector methodology of CASMO-5 is adopted to evaluate the few-group cross sections and discontinuity factors of the different reflector cases, based on the design of Generation II and III LWR reactors. In addition, in the perspective of using Monte-Carlo codes as a complementary option for lattice calculations of reflector configurations, the stochastic SERPENT code is also included as part of this benchmark. With the latter, the impact of applying 2-D reflector models with homogenized materials instead of explicit representation of the real geometrical structures is moreover evaluated and shown to be limited. (authors)

Canepa, S.; Hursin, M.; Ferroukhi, H.; Pautz, A. [Paul Scherrer Institut PSI, 5232, Villigen PSI (Switzerland)

2013-07-01T23:59:59.000Z

32

Angle-tuned, evanescently-decoupled reflector for high-efficiency red light-emitting diode  

Science Journals Connector (OSTI)

We propose and demonstrate evanescently-decoupled, solid-angle-optimized distributed Bragg reflectors (DBRs) for AlGaInP light-emitting diodes (LEDs). The thickness of each DBR layer...

Kim, Sun-Kyung; Cho, Hyun K; Park, Kyung K; Jang, Junho; Lee, Jeong S; Park, Kyung W; Park, Youngho; Kim, Ju-Young; Lee, Yong-Hee

2008-01-01T23:59:59.000Z

33

Widely-tunable femtosecond operation of Cr:LiSAF lasers using broadband saturable bragg reflectors  

E-Print Network (OSTI)

We describe a low-cost diode-pumped Cr:LiSAF laser, mode-locked using a broadband saturable Bragg reflector. The laser produces continuously tunable sub-200-fs pulses from 800 nm to 905 nm.

Demirbas, Umit

34

Performance Study of Thermoelectric Solar-Assisted Heat Pump with Reflectors  

Science Journals Connector (OSTI)

The simultaneous conversion of solar radiation into thermal and electrical energy in a thermoelectric (TE) solar-assisted heat pump is, for the purposes of ... plate reflectors have been mounted on a TE solar col...

C. Lertsatitthanakorn; S. Soponronnarit…

2014-06-01T23:59:59.000Z

35

Photodetector with absorbing region having resonant periodic absorption between reflectors  

DOE Patents (OSTI)

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.

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

1995-02-14T23:59:59.000Z

36

Enhanced quantum efficiency of amorphous silicon thin film solar cells with the inclusion of a rear-reflector thin film  

SciTech Connect

We investigated the growth mechanism of amorphous silicon thin films by implementing hot-wire chemical vapor deposition and fabricated thin film solar cell devices. The fabricated cells showed efficiencies of 7.5 and 8.6% for the samples without and with the rear-reflector decomposed by sputtering, respectively. The rear-reflector enhances the quantum efficiency in the infrared spectral region from 550 to 750?nm. The more stable quantum efficiency of the sample with the inclusion of a rear-reflector than the sample without the rear-reflector due to the bias effect is related to the enhancement of the short circuit current.

Park, Seungil [Department of Mechanical Engineering, Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Energy Conversions Technology Center, Korea Institute of Industrial Technology, Cheonan 331-825 (Korea, Republic of); Yong Ji, Hyung; Jun Kim, Myeong; Hyeon Peck, Jong [Energy Conversions Technology Center, Korea Institute of Industrial Technology, Cheonan 331-825 (Korea, Republic of); Kim, Keunjoo, E-mail: kimk@chonbuk.ac.kr [Department of Mechanical Engineering, Chonbuk National University, Jeonju 561-756 (Korea, Republic of)

2014-02-17T23:59:59.000Z

37

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

SciTech Connect

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.

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

38

Advanced Reflector and Absorber Materials (Fact Sheet), Thermal Systems Group: CSP Capabilities (TSG)  

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

Ideally, we want reflector Ideally, we want reflector materials in a CSP plant to last 20 to 30 years and cost less than $2.50 per square foot (or $25 per square meter) to manufacture. Highly specular mirrors should have better than 95% reflectance into a 4-milliradian full-cone angle and should resist soiling in all outdoor conditions. NREL focuses on achieving these goals by creating and applying testing procedures that accurately predict the performance and lifetime of materials. Some testing is relatively brief, lasting several weeks, whereas other processes may take several months or even years. We evaluate the potential of reflector (mirror) and absorber (receiver) materials in the three areas described below, working with our industry partners to develop technologies that will

39

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

DOE Patents (OSTI)

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.

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

40

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

SciTech Connect

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.

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

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


41

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

E-Print Network (OSTI)

INCREASED CELL EFFICIENCY IN InGaAs THIN FILM SOLAR CELLS WITH DIELECTRIC AND METAL BACK REFLECTORS solar cells using back reflectors. We studied absorption enhancement in InGaAs and InGaAsP thin film and metal, on InGaAs thin film solar cell performance by device modeling and nu- merical simulations. DEVICE

Atwater, Harry

42

Restoring the image of reflectors using the C-SAFT method during multiple reflection of echo signals from the boundaries of a cylindrical inspection object  

Science Journals Connector (OSTI)

A modified method of combined SAFT (C-SAFT) for restoring the images of reflectors is ... obtain images of reflectors by the M-C-SAFT method using many acoustic schemes. The images...

E. G. Bazulin

2013-02-01T23:59:59.000Z

43

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

E-Print Network (OSTI)

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

Nehorai, Arye

44

Polyhedral Specular Reflector Design for Ultra-High Spectrum Splitting Solar Module Efficiencies (>50%)  

E-Print Network (OSTI)

Polyhedral Specular Reflector Design for Ultra-High Spectrum Splitting Solar Module Efficiencies., Pasadena, CA, USA 95555-0345 ABSTRACT One pathway to achieving ultra-high solar efficiencies (>50, multijunction solar cell, solar concentrator 1. INTRODUCTION Solar cell efficiency is increased through

Atwater, Harry

45

Evaluation of Hardware and Procedures for Astronaut Assembly and Repair of Large Precision Reflectors  

Science Journals Connector (OSTI)

A detailed procedure is presented that enables astronauts in extravehicular activity (EVA) to efficiently assemble and repair large (i.e., greater than 10m-diameter) segmented reflectors, supported by a truss, for space-based optical or radio-frequency ...

Lake Mark S.; Jr Walter L. Heard; Watson Judith J.; Collins Timothy J.

2000-08-01T23:59:59.000Z

46

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

47

DESIGN AND TESTING FOR NOVEL JOINT FOR WAVE REFLECTORS James Tedd1  

E-Print Network (OSTI)

DESIGN 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 design. This testing has influenced the design and allowed construction to begin on refitting the joint

48

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

DOE Patents (OSTI)

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.

Horton, Richard H. (Schenectady, NY)

1980-01-01T23:59:59.000Z

49

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

E-Print Network (OSTI)

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 ...

Nabanja, Sheila P

2012-01-01T23:59:59.000Z

50

Semitransparent metal or distributed Bragg reflector for wide-viewing-angle organic light-emitting-diode microcavities  

Science Journals Connector (OSTI)

Microcavities for organic light-emitting devices (OLED’s) with a metal mirror on one side and a distributed Bragg reflector (DBR) on the other side have been extensively studied in...

Neyts, Kristiaan; De Visschere, Patrick; Fork, David K; Anderson, Greg B

2000-01-01T23:59:59.000Z

51

Advanced ultraviolet-resistant silver mirrors for use in solar reflectors  

DOE Patents (OSTI)

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.

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

2009-11-03T23:59:59.000Z

52

Study of Different Cleaning Methods for Solar Reflectors Used in CSP Plants  

Science Journals Connector (OSTI)

Abstract Soiling and dust accumulation in reflectors for concentrating solar plants (CSP) plants decrease their reflectance and, as a consequence, the solar field efficiency. Minimizing the cost of the cleanliness is a key issue for the solar-plant feasibility. This work is focused on optimizing the cleaning method of solar reflectors for CSP applications under real outdoor conditions in a semi-desert climate. The testing consisted on outdoor exposing of solar reflectors and applying different cleaning methods. According to results obtained, the most effective cleaning method is the one based on demineralized water and a brush, with an average efficiency of 98.8% in rainy periods and 97.2% in dry seasons. The innovative cleaning method based on a steam device with a soft tissue was inefficient (efficiency of 97.3% in a rainy period). If the number of passes applied with the high- pressure demineralized water method is highly enough, this method is as effective as the one based on brushing and the addition of a detergent does not increase its effectiveness.

A. Fernández-García; L. Álvarez-Rodrigo; L. Martínez-Arcos; R. Aguiar; J.M. Márquez-Payés

2014-01-01T23:59:59.000Z

53

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

E-Print Network (OSTI)

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...

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

2014-01-01T23:59:59.000Z

54

Chemical Effect of Dry and Wet Cleaning of the Ru Protective Layer of the Extreme ultraviolet (EUV) Lithography Reflector  

SciTech Connect

The authors report the chemical influence of cleaning of the Ru capping layer on the extreme ultraviolet (EUV) reflector surface. The cleaning of EUV reflector to remove the contamination particles has two requirements: to prevent corrosion and etching of the reflector surface and to maintain the reflectivity functionality of the reflector after the corrosive cleaning processes. Two main approaches for EUV reflector cleaning, wet chemical treatments [sulfuric acid and hydrogen peroxide mixture (SPM), ozonated water, and ozonated hydrogen peroxide] and dry cleaning (oxygen plasma and UV/ozone treatment), were tested. The changes in surface morphology and roughness were characterized using scanning electron microscopy and atomic force microscopy, while the surface etching and change of oxidation states were probed with x-ray photoelectron spectroscopy. Significant surface oxidation of the Ru capping layer was observed after oxygen plasma and UV/ozone treatment, while the oxidation is unnoticeable after SPM treatment. Based on these surface studies, the authors found that SPM treatment exhibits the minimal corrosive interactions with Ru capping layer. They address the molecular mechanism of corrosive gas and liquid-phase chemical interaction with the surface of Ru capping layer on the EUV reflector.

Belau, Leonid; Park, Jeong Y.; Liang, Ted; Seo, Hyungtak; Somorjai, Gabor A.

2009-04-10T23:59:59.000Z

55

DOE Publishes Final Rule for the Request for Exclusion of 100 Watt R20 Short Incandescent Reflector Lamps from Energy Conservation Standards  

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

The Department of Energy has published a final rule regarding the request for exclusion of 100 Watt R20 short incandescent reflector lamps from energy conservation standards.

56

Rise Time of the Simulated VERITAS 12 m Davies-Cotton Reflector  

SciTech Connect

The Very Energetic Radiation Imaging Telescope Array System (VERITAS) will utilise Imaging Atmospheric Cherenkov Telescopes (IACTs) based on a Davies-Cotton design with f-number f/1.0 to detect cosmic gamma-rays. Unlike a parabolic reflector, light from the Davies-Cotton does not arrive isochronously at the camera. Here the effect of the telescope geometry on signal rise-time is examined. An almost square-pulse arrival time profile with a rise time of 1.7 ns is found analytically and confirmed through simulation.

White, Richard J. [School of Physics and Astronomy, University of Leeds (United Kingdom)

2005-02-21T23:59:59.000Z

57

Lamp system with conditioned water coolant and diffuse reflector of polytetrafluorethylene(PTFE)  

DOE Patents (OSTI)

A lamp system with a very soft high-intensity output is provided over a large area by water cooling a long-arc lamp inside a diffuse reflector of polytetrafluorethylene (PTFE) and titanium dioxide (TiO.sub.2) white pigment. The water is kept clean and pure by a one micron particulate filter and an activated charcoal/ultraviolet irradiation system that circulates and de-ionizes and biologically sterilizes the coolant water at all times, even when the long-arc lamp is off.

Zapata, Luis E. (Livermore, CA); Hackel, Lloyd (Livermore, CA)

1999-01-01T23:59:59.000Z

58

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

SciTech Connect

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.

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

59

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

SciTech Connect

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''.

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

60

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

SciTech Connect

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.

Gohar, Y.; Smith, D. L.

1999-10-07T23:59:59.000Z

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


61

Advanced pressurized water reactor for improved resource utilization, part II - composite advanced PWR concept  

SciTech Connect

This report evaluates the enhanced resource utilization in an advanced pressurized water reactor (PWR) concept using a composite of selected improvements identified in a companion study. The selected improvements were in the areas of reduced loss of neutrons to control poisons, reduced loss of neutrons in leakage from the core, and improved blanket/reflector concepts. These improvements were incorporated into a single composite advanced PWR. A preliminary assessment of resource requirements and costs and impact on safety are presented.

Turner, S.E.; Gurley, M.K.; Kirby, K.D.; Mitchell, W III

1981-09-15T23:59:59.000Z

62

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

SciTech Connect

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.

Gray, M.

2014-08-01T23:59:59.000Z

63

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

SciTech Connect

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.

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

2008-05-19T23:59:59.000Z

64

Photonic crystal membrane reflectors by magnetic field-guided metal-assisted chemical etching  

SciTech Connect

Metal-assisted chemical etching (MacEtch) is a simple etching method that uses metal as the catalyst for anisotropic etching of semiconductors. However, producing nano-structures using MacEtch from discrete metal patterns, in contrast to interconnected ones, has been challenging because of the difficulties in keeping the discrete metal features in close contact with the semiconductor. We report the use of magnetic field-guided MacEtch (h-MacEtch) to fabricate periodic nanohole arrays in silicon-on-insulator (SOI) wafers for high reflectance photonic crystal membrane reflectors. This study demonstrates that h-MacEtch can be used in place of conventional dry etching to produce ordered nanohole arrays for photonic devices.

Balasundaram, Karthik; Mohseni, Parsian K.; Li, Xiuling, E-mail: wzhou@uta.edu, E-mail: xiuling@illinois.edu [Micro and Nanotechnology Laboratory, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)] [Micro and Nanotechnology Laboratory, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Shuai, Yi-Chen; Zhao, Deyin; Zhou, Weidong, E-mail: wzhou@uta.edu, E-mail: xiuling@illinois.edu [Department of Electrical Engineering, NanoFAB Center, University of Texas at Arlington, Arlington, Texas 76019 (United States)] [Department of Electrical Engineering, NanoFAB Center, University of Texas at Arlington, Arlington, Texas 76019 (United States)

2013-11-18T23:59:59.000Z

65

Greek research reactor performance characteristics after addition of beryllium reflector and LEU fuel  

SciTech Connect

The GRR-1 is a 5-MW pool-type, light-water-moderated and-cooled reactor fueled with MTR-type fuel elements. Recently received Be reflector blocks will soon be added to the core to add additional reactivity until fresh LEU fuel arrives. REBUS-3 xy fuel cycle analyses, using burnup dependent cross sections, were performed to assist in fuel management decisions for the water- and Be-reflected HEU nonequilibrium cores. Cross sections generated by EPRI-CELL have been benchmarked to identical VIM Monte Carlo models. The size of the Be-reflected LEU core has been reduced to 30 elements compared to 35 for the HEU water-reflected core, and an equilibrium cycle calculation has been performed.

Deen, J.R.; Snelgrove, J.L. [Argonne National Lab., IL (United States); Papastergiou, C. [National Center for Scientific Research, Athens (Greece)

1992-12-31T23:59:59.000Z

66

Greek research reactor performance characteristics after addition of beryllium reflector and LEU fuel  

SciTech Connect

The GRR-1 is a 5-MW pool-type, light-water-moderated and-cooled reactor fueled with MTR-type fuel elements. Recently received Be reflector blocks will soon be added to the core to add additional reactivity until fresh LEU fuel arrives. REBUS-3 xy fuel cycle analyses, using burnup dependent cross sections, were performed to assist in fuel management decisions for the water- and Be-reflected HEU nonequilibrium cores. Cross sections generated by EPRI-CELL have been benchmarked to identical VIM Monte Carlo models. The size of the Be-reflected LEU core has been reduced to 30 elements compared to 35 for the HEU water-reflected core, and an equilibrium cycle calculation has been performed.

Deen, J.R.; Snelgrove, J.L. (Argonne National Lab., IL (United States)); Papastergiou, C. (National Center for Scientific Research, Athens (Greece))

1992-01-01T23:59:59.000Z

67

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

SciTech Connect

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.

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

2009-12-01T23:59:59.000Z

68

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

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.

Chou, P

2011-12-14T23:59:59.000Z

69

Single-mode, narrow-linewidth external cavity quantum cascade laser through optical feedback from a partial-reflector  

SciTech Connect

An external-cavity (EC) quantum cascade (QC) laser using optical feedback from a partial-reflector is reported. With this configuration, the otherwise multi-mode emission of a Fabry-Perot QC laser was made single-mode with optical output powers exceeding 40 mW. A mode-hop free tuning range of 2.46 cm-1 was achieved by synchronously tuning the EC length and QC laser current. The linewidth of the partial-reflector EC-QC laser was measured for integration times from 100 ?s to 4 s, and compared to a distributed feedback QC laser. Linewidths as small as 480 kHz were recorded for the EC-QC laser

Cendejas, Richard A.; Phillips, Mark C.; Myers, Tanya L.; Taubman, Matthew S.

2010-11-30T23:59:59.000Z

70

Impact of strongly absorbing experiments in the HFIR reflector on control plate strength  

SciTech Connect

Several improvements in the experimental irradiation facilities of the High-Flux Isotope Reactor (HFIR) were incorporated at the time of its restart in 1989 in order to enhance its capabilities for materials irradiations. One improvement that is of particular interest in regard to its impact on the reactor`s nuclear characteristics is the increase in number and size of the larger irradiation holes in the HFIR`s removable beryllium reflector (RB). A principal use for these larger-diameter holes has been to accommodate spectrally tailored materials irradiations where fast neutron reactions are of principal interest and the suppression of thermal neutron reactions is important to the interpretation of the results. Such experiments typically require thermal neutron-absorbing shrouds around the experimental capsules. Reactor operation with strong thermal neutron absorbers directly outboard of the control elements has significant impact on core power distribution, cycle length, control rod worths, and on other experimental facilities nearby. This paper specifically discusses the impacts on control rod strength due to the strong localized thermal neutron absorbers.

Rothrock, R.B. [Oak Ridge National Lab., TN (United States)

1998-09-01T23:59:59.000Z

71

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

SciTech Connect

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.

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

72

2014-12-30 Issuance: Energy Conservation Standard for General Service Fluorescent Lamps and Incandescent Reflector Lamps; Final Rule  

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

This document is a pre-publication Federal Register final rule regarding energy conservation standards for general service fluorescent lamps and incandescent reflector lamps, as issued by the Deputy Assistant Secretary for Energy Efficiency on December 30, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

73

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

SciTech Connect

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.

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

74

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

SciTech Connect

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.

Schneider, A.R.

1980-01-01T23:59:59.000Z

75

Vertical cavity surface emitting laser emitting at 1.56 microns with AlGaAsSb/AlAsSb distributed Bragg reflectors  

SciTech Connect

The authors report 77K operation of an optically pumped vertical cavity surface emitting laser with an Sb-based cavity. The structure consists of 15 and 20 pair AlGaAsSb/AlAsSb top and bottom reflectors and a bulk InGaAs active region.

Blum, O.; Klem, J.F.; Lear, K.L.; Vawter, G.A.; Kurtz, S.R.

1998-07-01T23:59:59.000Z

76

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

SciTech Connect

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.}

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

77

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

SciTech Connect

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.

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

78

Electrode compositions  

DOE Patents (OSTI)

An electrode composition is described for use as an electrode in a non-aqueous battery system. The electrode composition contains an electrically active powder in a solid polymer and, as a dispersant, a C{sub 8}-C{sub 15} alkyl capped oligomer of a hexanoic acid that is electrochemically inert at 2.5--4.5 volts.

Block, J.; Fan, X.

1998-10-27T23:59:59.000Z

79

Hydride compositions  

DOE Patents (OSTI)

Disclosed are a composition for use in storing hydrogen and a method for making the composition. The composition comprises a mixture of two or more hydrides, each hydride having a different series of hydrogen sorption isotherms that contribute to the overall isotherms of the mixture. The hydrides are chosen so that the isotherms of the mixture have regions wherein the H equilibrium pressure increases with increasing hydrogen, preferably linearly. The isotherms of the mixture can be adjusted by selecting hydrides with different isotherms and by varying the amounts of the individual hydrides, or both. Preferably, the mixture is made up of hydrides that have isotherms with substantially flat plateaus and in nearly equimolar amounts. The composition is activated by degassing, exposing to H, and then heating below the softening temperature of any of the constituents. When the composition is used to store hydrogen, its hydrogen content can be found simply by measuring P{sub H}{sub 2} and determining H/M from the isothermic function of the composition.

Lee, Myung, W.

1994-01-01T23:59:59.000Z

80

Hydride compositions  

DOE Patents (OSTI)

A composition for use in storing hydrogen, and a method for making the composition. The composition comprises a mixture of two or more hydrides, each hydride having a different series of hydrogen sorption isotherms that contribute to the overall isotherms of the mixture. The hydrides are chosen so that the isotherms of the mixture have regions wherein the hydrogen equilibrium pressure increases with increasing hydrogen, preferably linearly. The isotherms of the mixture can be adjusted by selecting hydrides with different isotherms and by varying the amounts of the individual hydrides, or both. Preferably, the mixture is made up of hydrides that have isotherms with substantially flat plateaus and in nearly equimolar amounts. The composition is activated by degassing, exposing to hydrogen and then heating at a temperature below the softening temperature of any of the. constituents so that their chemical and structural integrity is preserved. When the composition is used to store hydrogen, its hydrogen content can be found simply by measuring P.sub.H.sbsb.2 and determining H/M from the isothermic function of the composition.

Lee, Myung W. (North Augusta, SC)

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "lambertian reflector composite" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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81

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

DOE Patents (OSTI)

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.

Weiss, Jonathan D. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

82

Development of a straightness measurement and compensation system with multiple right-angle reflectors and a lead zirconate titanate-based compensation stage  

SciTech Connect

This paper presents a real-time straightness measurement and compensation system with an optical straightness measurement system and a single-axis flexure-hinge type lead zirconate titanate (PZT)-based compensation stage. The optical straightness measurement system consists of a He-Ne laser, a quadrant photodiode detector, and five right-angle reflectors. Multiple laser beam reflections between the right-angle reflectors increase the sensitivity of the straightness measurement by a factor of 6. The right-angle reflectors can be moved by the flexure-hinge type PZT-based compensation stage that is actuated by a PZT actuator to ensure that the laser beam is always projected onto the center of the quadrant detector. These two systems are integrated and fixed on a scanning stage. The resolution of the straightness measurement system is 0.1 {mu}m. Using the real-time straightness compensation system, the straightness error of the scanning stage is fed back to the control system. The compensated straightness error of the scanning stage system was reduced from 6.5 {mu}m to less than 1 {mu}m.

Liu, Chien-Hung; Chen, Jui-Hung [Institute of Electro-Optical and Materials Science, National Formosa University, Huwei, Yunlin 632, Taiwan (China); Teng, Yun-Feng [Department of Mechanical Engineering, National Chung-Cheng University, Chiayi 621, Taiwan (China)

2009-11-15T23:59:59.000Z

83

Phosphorescent compositions, methods of making the compositions, and methods of using the compositions  

SciTech Connect

Compositions, methods of making compositions, materials including compositions, crayons including compositions, paint including compositions, ink including compositions, waxes including compositions, polymers including compositions, vesicles including the compositions, methods of making each, and the like are disclosed.

Jia, Weiyi; Wang, Xiaojun; Jia, George D.; Lewis, Linda; Yen, Laurel C.

2014-06-24T23:59:59.000Z

84

Transformation Composition  

E-Print Network (OSTI)

Proc. AGTIVE'99, to appear in LNCS Graph Transformation Modules and their Composition ? Frank,knirsch,kreo,kuskeg@informatik.uni-bremen.de Abstract. In this paper, we investigate the notion of transformation modules as a structuring principle. Based on the notion of transformation units, a concept that allows to specify binary relations on graphs

Drewes, Frank

85

Page not found | Department of Energy  

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

11 - 2020 of 8,172 results. 11 - 2020 of 8,172 results. Download CX-000777: Categorical Exclusion Determination Low-Cost, Highly Lambertian Reflector Composite for Improved LED (Light-Emitting Diode) Efficiency and Lifetime CX(s) Applied: B3.6 Date: 02/10/2010 Location(s): Newark, Delaware Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-000777-categorical-exclusion-determination Download CX-000775: Categorical Exclusion Determination Site Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama (Drill) CX(s) Applied: A9, B3.1, B3.6 Date: 02/10/2010 Location(s): Walker County, Alabama Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-000775-categorical-exclusion-determination

86

Page not found | Department of Energy  

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

51 - 5960 of 29,416 results. 51 - 5960 of 29,416 results. Download CX-002608: Categorical Exclusion Determination Improving the Monitoring, Verification, and Accounting of Carbon Dioxide Sequestered in Geologic Systems with Multicomponent Seismic Technology and Rock Physics Modeling CX(s) Applied: A9 Date: 12/11/2009 Location(s): Austin, Texas Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-002608-categorical-exclusion-determination Download CX-000777: Categorical Exclusion Determination Low-Cost, Highly Lambertian Reflector Composite for Improved LED (Light-Emitting Diode) Efficiency and Lifetime CX(s) Applied: B3.6 Date: 02/10/2010 Location(s): Newark, Delaware Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory

87

Categorical Exclusion Determinations: Office of Energy Efficiency and  

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

1, 2010 1, 2010 CX-001738: Categorical Exclusion Determination Installation of a Low Flow Unit at the Abiquiu Hydroelectric Facility CX(s) Applied: A9, B5.1 Date: 02/11/2010 Location(s): Los Alamos County, New Mexico Office(s): Energy Efficiency and Renewable Energy, Golden Field Office February 10, 2010 CX-000658: Categorical Exclusion Determination Gilt Edge Mine Wind Resource Assessment; National Renewable Energy Laboratory Tracking Number 10-009 CX(s) Applied: B3.1 Date: 02/10/2010 Location(s): Deadwood, South Dakota Office(s): Energy Efficiency and Renewable Energy, Golden Field Office February 10, 2010 CX-000777: Categorical Exclusion Determination Low-Cost, Highly Lambertian Reflector Composite for Improved LED (Light-Emitting Diode) Efficiency and Lifetime CX(s) Applied: B3.6

88

TOWARDS AFFECTIVE ALGORITHMIC COMPOSITION  

E-Print Network (OSTI)

TOWARDS AFFECTIVE ALGORITHMIC COMPOSITION Duncan Williams* , Alexis Kirke* , Eduardo Reck Miranda are driving an emerging field: affective algorithmic composition. Strate- gies for algorithmic composition within the last decade) implementing systems for algorithmic composition with the intention of targeting

Miranda, Eduardo Reck

89

A Dielectric Omnidirectional Reflector  

Science Journals Connector (OSTI)

...heat barrier or collector in thermoelectric...for imaging and solar energy collection and...confined to the slabs with the high index...heat barrier or collector in thermoelectric...heat barrier or collector in thermoelectric...for imaging and solar...

Yoel Fink; Joshua N. Winn; Shanhui Fan; Chiping Chen; Jurgen Michel; John D. Joannopoulos; Edwin L. Thomas

1998-11-27T23:59:59.000Z

90

Thermodynamic and optical analysis for a CPV/T hybrid system with beam splitter and fully tracked linear Fresnel reflector concentrator utilizing sloped panels  

Science Journals Connector (OSTI)

Abstract Spectral splitting technology that separates solar spectrum into several parts and enables different energy conversions such as photovoltaic (PV) conversion and photo-thermal conversion aims to utilize the full spectrum solar energy efficiently. A novel concentrating PV/Thermal (CPV/T) hybrid system with beam splitter and fully tracked linear Fresnel reflector concentrator utilizing sloped panels was proposed in this study. The relations between the structural parameters and the optical performances of the system were investigated. The concentrated radiation distribution on the PV device surface was simulated by taking into account the main optical errors and shows a good uniformity. Based on the experimental data of the components, thermodynamic analysis on the CPV/T hybrid system was carried out and the results reveal that the overall energy conversion efficiencies of the proposed CPV/T hybrid system is higher than that of the CPV system under the same conditions.

Yang Liu; Peng Hu; Qian Zhang; Zeshao Chen

2014-01-01T23:59:59.000Z

91

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

SciTech Connect

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.

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

92

AlGaInP thin-film LED with omni-directionally reflector and ITO transparent conducting n-type contact  

Science Journals Connector (OSTI)

In this paper a novel AlGaInP thin-film light-emitting diode (LED) with omni-directionally reflector (ODR) and transparent conducting indium tin oxide (ITO) n-type contact structure is proposed, and fabrication process is developed. This reflector is realized with the combination of a low-refractive-index dielectric layer and a high reflectivity metal layer. This allows the light emitted or internally reflected downwardly towards the GaAs substrate at any angle of incidence to be reflected towards the top surface of the chip. ITO n-type contact is used for anti-reflection and current spreading layers on the ODR-LED with ITO. The sheet resistance of the ITO films (95 nm) deposited on n-ohmic contact of ODR-LED is of the order 23.5?/ with up to 90% transmittance (above 92% for 590–770 nm) in the visible region of the spectrum. The optical and electrical characteristics of the ODR-LED with ITO are presented and compared to conventional AS-LED and ODR-LED without ITO. It is shown that the light output from the ODR-LED with ITO at forward current 20 mA exceeds that of AS-LED and ODR-LED without ITO by about a factor of 1.63 and 0.16, respectively. A favourable luminous intensity of 218.3 mcd from the ODR-LED with ITO (peak wavelength 620 nm) could be obtained under 20 mA injection, which is 2.63 times and 1.21 times higher than that of AS-LED and ODR-LED without ITO, respectively.

Zhang Jian-Ming; Zou De-Shu; Xu Chen; Guo Wei-Ling; Zhu Yan-Xu; Liang Ting; Da Xiao-Li; Li Jian-Jun; Shen Guang-Di

2007-01-01T23:59:59.000Z

93

Microcracking in fibrous composites  

E-Print Network (OSTI)

are conducted on a unidirectional graphite fiber-reinforced epoxy in order to determine some aspects of nonlinear behavior, and the results of microcracking. The nature. of the microstructure of composites and the microcracking that occurs in composites... of microscopy samples. 53 21. Graphite composite surfaces, as received (top, 60X) and as prepared (bottom, 100X) ~ 56 22, Graphite composite surfaces after peeling (1000X). 58 23. Scotchply surfaces after peeling (1000X). 60 24. Graphite composite damaged...

Conrad, Nicholas

2012-06-07T23:59:59.000Z

94

Composite production riser assessment  

E-Print Network (OSTI)

The performance of a deep water composite production riser from a system perspective is presented, and its advantages are articulated through comparisons with a typical steel riser under identical service conditions. The composite riser joints...

Kim, Won Ki

2007-09-17T23:59:59.000Z

95

Heteroporphyrin nanotubes and composites  

DOE Patents (OSTI)

Heteroporphyrin nanotubes, metal nanostructures, and metal/porphyrin-nanotube composite nanostructures formed using the nanotubes as photocatalysts and structural templates, and the methods for forming the nanotubes and composites.

Shelnutt, John A. (Tijeras, NM); Medforth, Craig J. (Winters, CA); Wang, Zhongchun (Albuquerque, NM)

2007-05-29T23:59:59.000Z

96

Flexible Composite Radiation Detector  

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

Flexible Composite Radiation Detector Flexible Composite Radiation Detector Flexible Composite Radiation Detector A flexible composite scintillator was prepared by mixing fast, bright, dense rare-earth doped powdered oxyorthosilicate (such as LSO:Ce, LSO:Sm, and GSO:Ce) scintillator with a polymer binder. Available for thumbnail of Feynman Center (505) 665-9090 Email Flexible Composite Radiation Detector A flexible composite scintillator was prepared by mixing fast, bright, dense rare-earth doped powdered oxyorthosilicate (such as LSO:Ce, LSO:Sm, and GSO:Ce) scintillator with a polymer binder. The binder is transparent to the scintillator emission. The composite is seamless and can be made large and in a wide variety of shapes. Importantly, the composite can be tailored to emit light in a spectral region that matches the optimum

97

Vibrational Damping of Composite Materials  

E-Print Network (OSTI)

on the Damping of Composite Laminates”, SPIE Proceedings onpublication to Journal of Composite Materials Biggerstaff,submitted for publication to Composites, Part A Biggerstaff,

Biggerstaff, Janet M.

2006-01-01T23:59:59.000Z

98

CARBON-CARBON COMPOSITE ALLCOMP Carbon-Carbon Composite  

E-Print Network (OSTI)

CARBON-CARBON COMPOSITE ALLCOMP Carbon-Carbon Composite · C-C supplied in two forms · T300: C-C composite containing continuous PAN T300 fibers · SWB: Chopped Fiber Composite containing SWB fibers Crush strength 4340 steel, carbon-carbon composite, and Carbon-Silicon Carbide composite were tested to examine

Rollins, Andrew M.

99

Mixed Semiconductor Nanocrystal Compositions  

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

Mixed Semiconductor Nanocrystal Compositions Mixed Semiconductor Nanocrystal Compositions Mixed Semiconductor Nanocrystal Compositions Composition comprising one or more energy donors and one or more energy acceptors. Available for thumbnail of Feynman Center (505) 665-9090 Email Mixed Semiconductor Nanocrystal Compositions Composition comprising one or more energy donors and one or more energy acceptors, wherein energy is transferred from the energy donor to the energy acceptor and wherein: the energy acceptor is a colloidal nanocrystal having a lower band gap energy than the energy donor; the energy donor and the energy acceptor are separated by a distance of 40 nm or less; wherein the average peak absorption energy of the acceptor is at least 20 meV greater than the average peak emission energy of the energy donor; and

100

Continuous Fiber Ceramic Composites  

SciTech Connect

Fiber-reinforced ceramic composites demonstrate the high-temperature stability of ceramics--with an increased fracture toughness resulting from the fiber reinforcement of the composite. The material optimization performed under the continuous fiber ceramic composites (CFCC) included a series of systematic optimizations. The overall goals were to define the processing window, to increase the robustinous of the process, to increase process yield while reducing costs, and to define the complexity of parts that could be fabricated.

None

2002-09-01T23:59:59.000Z

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


101

Composite Thermoelectric Devices  

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

Composite thermoelectric devices incorporating common conductors laminated between P- and N-type thermoelectric plates demonstrate internal ohmic loss reduction and enhanced performance

102

Composites of Carbon Nanotubes.  

E-Print Network (OSTI)

??The purpose of this research was to study various methods of incorporation of single-walled carbon nanotubes (SWNT) with polymers for producing electrically conductive polystyrene composites.… (more)

Tchoul, Maxim N.

2008-01-01T23:59:59.000Z

103

Nanoclay Syntactic Foam Composites.  

E-Print Network (OSTI)

??Syntactic foams are composite materials in which the matrix phase is reinforced with hollow particles called microballoons. They possess low moisture absorption, low thermal conductivity… (more)

Peter, Sameer Leo

2008-01-01T23:59:59.000Z

104

Reactive composite compositions and mat barriers  

DOE Patents (OSTI)

A hazardous material storage area has a reactive multi-layer composite mat which lines an opening into which a reactive backfill and hazardous material are placed. A water-inhibiting cap may cover the hazardous material storage area. The reactive multi-layer composite mat has a backing onto which is placed an active layer which will neutralize or stabilize hazardous waste and a fronting layer so that the active layer is between the fronting and backing layers. The reactive backfill has a reactive agent which can stabilize or neutralize hazardous material and inhibit the movement of the hazardous material through the hazardous material storage area.

Langton, Christine A. (Aiken, SC); Narasimhan, Rajendran (Evans, GA); Karraker, David G. (Aiken, SC)

2001-01-01T23:59:59.000Z

105

Biodegradable synthetic bone composites  

DOE Patents (OSTI)

The invention provides for a biodegradable synthetic bone composition comprising a biodegradable hydrogel polymer scaffold comprising a plurality of hydrolytically unstable linkages, and an inorganic component; such as a biodegradable poly(hydroxyethylmethacrylate)/hydroxyapatite (pHEMA/HA) hydrogel composite possessing mineral content approximately that of human bone.

Liu, Gao; Zhao, Dacheng; Saiz, Eduardo; Tomsia, Antoni P.

2013-01-01T23:59:59.000Z

106

Molybdenum disilicide matrix composite  

DOE Patents (OSTI)

A composition consisting of an intermetallic compound, molybdenum disilicide, which is reinforced with VS silicon carbide whiskers dispersed throughout it and a method of making the reinforced composition. Use of the reinforcing material increases fracture toughness at low temperatures and strength at high temperatures, as compared to pure molybdenum disilicide.

Petrovic, John J. (Los Alamos, NM); Carter, David H. (Los Alamos, NM); Gac, Frank D. (Los Alamos, NM)

1991-01-01T23:59:59.000Z

107

Molybdenum disilicide matrix composite  

DOE Patents (OSTI)

A composition consisting of an intermetallic compound, molybdenum disilicide, which is reinforced with VS silicon carbide whiskers dispersed throughout it and a method of making the reinforced composition. Use of the reinforcing material increases fracture toughness at low temperatures and strength at high temperatures, as compared to pure molybdenum disilicide.

Petrovic, John J. (Los Alamos, NM); Carter, David H. (Los Alamos, NM); Gac, Frank D. (Los Alamos, NM)

1990-01-01T23:59:59.000Z

108

Ceramic-silicide composites  

SciTech Connect

The area of ceramic-silicide composites represents a merging of structural ceramics and structural silicides. Such ceramic-silicide composites can possess the desirable characteristics of both classes of compounds. Important structural ceramics are materials such as Si{sub 3}N{sub 4}, SiC, Al{sub 2}O{sub 3}, and ZrO{sub 2}, which possess covalent, ionic, or mixed covalent-ionic atomic bonding. An important structural silicide is MoSi{sub 2}, which possesses mixed covalent-metallic bonding. The arena of ceramic-silicide composites encompasses both composites where the structural silicide is the matrix and the structural ceramic is the reinforcement, and composites where the structural ceramic is the matrix and the structural silicide is the reinforcement. In the former area, MoSi{sub 2}-SiC, MoSi{sub 2}-ZrO{sub 2}, and MoSi{sub 2}-Al{sub 2}O{sub 3} composites are discussed. In the latter area, Si{sub 3}N{sub 4}-MoSi{sub 2} composites are described.

Petrovic, J.J.

1998-12-01T23:59:59.000Z

109

Short courses in Composite Materials  

E-Print Network (OSTI)

Short courses in Composite Materials Overview The ability to tailor the material properties used. Combining the adaptability of composites with clear weight savings, whilst tailoring materials properties Airbus and Glyndr University, the Advanced Composites Training and Development Centre educates current

Davies, John N.

110

Composite metal membrane  

DOE Patents (OSTI)

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, Nathaniel M. (Espanola, NM); Dye, Robert C. (Los Alamos, NM); Snow, Ronny C. (Los Alamos, NM); Birdsell, Stephan A. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

111

Composite metal membrane  

DOE Patents (OSTI)

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, N.M.; Dye, R.C.; Snow, R.C.; Birdsell, S.A.

1998-04-14T23:59:59.000Z

112

Hard metal composition  

DOE Patents (OSTI)

A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 wt % boron carbide and the remainder a metal mixture comprising from 70 to 90% tungsten or molybdenum, with the remainder of the metal mixture comprising nickel and iron or a mixture thereof. The composition has a relatively low density of between 7 and 14 g/cc. The precursor is preferably hot pressed to yield a composition having greater than 100% of theoretical density.

Sheinberg, H.

1983-07-26T23:59:59.000Z

113

Hard metal composition  

DOE Patents (OSTI)

A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 weight percent boron carbide and the remainder a metal mixture comprising from 70 to 90 percent tungsten or molybdenum, with the remainder of the metal mixture comprising nickel and iron or a mixture thereof. The composition has a relatively low density of between 7 to 14 g/cc. The precursor is preferably hot pressed to yield a composition having greater than 100% of theoretical density.

Sheinberg, Haskell (Los Alamos, NM)

1986-01-01T23:59:59.000Z

114

Electrically conductive composite material  

DOE Patents (OSTI)

An electrically conductive composite material is disclosed which comprises a conductive open-celled, low density, microcellular carbon foam filled with a non-conductive polymer or resin. The composite material is prepared in a two-step process consisting of first preparing the microcellular carbon foam from a carbonizable polymer or copolymer using a phase separation process, then filling the carbon foam with the desired non-conductive polymer or resin. The electrically conductive composites of the present invention has a uniform and consistent pattern of filler distribution, and as a result is superior over prior art materials when used in battery components, electrodes, and the like. 2 figs.

Clough, R.L.; Sylwester, A.P.

1989-05-23T23:59:59.000Z

115

Lightweight polymer concrete composites  

SciTech Connect

Lightweight polymer concrete composites have been developed with excellent insulating properties. The composites consist of lightweight aggregates such as expanded perlites, multicellular glass nodules, or hollow alumina silicate microspheres bound together with unsaturated polyester or epoxy resins. These composites, known as Insulating Polymer Concrete (IPC), have thermal conductivites from 0.09 to 0.19 Btu/h-ft-/sup 0/F. Compressive strengths, dependent upon the aggregates used, range from 1000 to 6000 psi. These materials can be precast or cast-in-place on concrete substrates. Recently, it has been demonstrated that these materials can also be sprayed onto concrete and other substrates. An overlay application of IPC is currently under way as dike insulation at an LNG storage tank facility. The composites have numerous potentials in the construction industry such as insulating building blocks or prefabricated insulating wall panels.

Fontana, J.J.; Steinberg, M.; Reams, W.

1985-08-01T23:59:59.000Z

116

Cement, Ceramics, and Composites  

Science Journals Connector (OSTI)

Cement and its applications as concrete (a composite of cement and aggregate) are known throughout the world. The most common cement used today is Portland, named after the gray rock of Portland, Eng...

O. V. Roussak; H. D. Gesser

2013-01-01T23:59:59.000Z

117

Cement, Ceramics, and Composites  

Science Journals Connector (OSTI)

Cement and its applications as concrete (a composite of cement and aggregate) is known throughout the world. The most common cement used today is Portland, named after the grey rock of Portland, Engl...

H. D. Gesser

2002-01-01T23:59:59.000Z

118

Composite zeolite membranes  

DOE Patents (OSTI)

A new class of composite zeolite membranes and synthesis techniques therefor has been invented. These membranes are essentially defect-free, and exhibit large levels of transmembrane flux and of chemical and isotopic selectivity.

Nenoff, Tina M. (Albuquerque, NM); Thoma, Steven G. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

119

Composition for detecting uranyl  

DOE Patents (OSTI)

The present invention relates to an indicator composition for use in spectrophotometric detection of a substance in a solution, and a method for making the composition. Useful indicators are sensitive to the particular substance being measured, but are unaffected by the fluid and other chemical species that may be present in the fluid. Optical indicators are used to measure the uranium concentration of process solutions in facilities for extracting uranium from ores, production of nuclear fuels, and reprocessing of irradiated fuels. The composition comprises an organohalide covalently bonded to an indicator for the substance, in such a manner that the product is itself an indicator that provides increased spectral resolution for detecting the substance. The indicator is preferably arsenazo III and the organohalide is preferably cyanuric chloride. These form a composition that is ideally suited for detecting uranyl.

Baylor, L.C.; Stephens, S.M.

1994-01-01T23:59:59.000Z

120

Agouti polypeptide compositions  

DOE Patents (OSTI)

Disclosed are methods and compositions comprising novel agouti polypeptides and the polynucleotides which encode them. Also disclosed are DNA segments encoding these proteins derived from human and murine cell lines, and the use of these polynucleotides and polypeptides in a variety of diagnostic and therapeutic applications. Methods, compositions, kits, and devices are also provided for identifying compounds which are inhibitors of agouti activity, and for altering fatty acid synthetase activity and intracellular calcium levels in transformed cells.

Woychik, Richard P. (Orinda, CA); Bultman, Scott J. (Lakewood, OH); Michaud, Edward J. (Kingston, TN)

2001-10-30T23:59:59.000Z

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


121

Multifracture of ceramic composites  

SciTech Connect

This work presents a mechanistic model for the multifracture process of uniaxially reinforced fibrous ceramic composites under monotonically increasing tension parallel to the fiber direction. The model employs an energy criterion to account for the progression of matrix cracks, bridged by intact fibers, and Weibull failure statistics to relate the failure of the fibers. Consideration is given to the interactions between the foregoing failure processes as well as to the effects of various material parameters on the response of the composite.

Weitsman, Y.J. (Oak Ridge National Lab., TN (United States)); Zhu, H. (Tennessee Univ., Knoxville, TN (United States))

1992-03-01T23:59:59.000Z

122

Composite Likelihood January 30, 2012  

E-Print Network (OSTI)

Composite Likelihood Nancy Reid January 30, 2012 with Cristiano Varin and thanks to Don Fraser maximum likelihood estimate Composite Likelihood Brown, January 2013 2 #12;... background warning these to form composite likelihood Composite Likelihood Brown, January 2013 3 #12;Terminology Model f(y; ), y

Reid, Nancy

123

Composites Technology for Hydrogen Pipelines  

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

Investigate application of composite, fiber-reinforced polymer pipeline technology for hydrogen transmission and distribution

124

Revolutionizing Clean Energy Technology with Advanced Composites...  

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

Revolutionizing Clean Energy Technology with Advanced Composites Revolutionizing Clean Energy Technology with Advanced Composites Addthis...

125

Recycled Thermoplastic Composite Bridge  

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

Recycled Thermoplastic Composite Recycled Thermoplastic Composite Bridge Philip R. Columbus Office of the Assistant Chief of Staff for Installation Management Headquarters, Department of the Army 180900ZMay2012 1 Philip R. Columbus/571-256-9774/philip.r.columbus.civ@mail.mil/ Overview * The purpose of this project was to demonstrate that a thermoplastic composite I-beam bridge could be constructed to accommodate a M-1 battle tank. * This effort determined the engineering and construction of such a structure was possible and be cost competitive to a wood timber bridge * The materials are virtually maintenance-free and not subject to degradation from moisture, rot, insects and weather. 180900ZMay2012 2 Philip R. Columbus/571-256-9774/philip.r.columbus.civ@mail.mil/ Background

126

Recycled Thermoplastic Composite Bridge  

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

Recycled Thermoplastic Composite Recycled Thermoplastic Composite Bridge Philip R. Columbus Office of the Assistant Chief of Staff for Installation Management Headquarters, Department of the Army 180900ZMay2012 1 Philip R. Columbus/571-256-9774/philip.r.columbus.civ@mail.mil/ Overview * The purpose of this project was to demonstrate that a thermoplastic composite I-beam bridge could be constructed to accommodate a M-1 battle tank. * This effort determined the engineering and construction of such a structure was possible and be cost competitive to a wood timber bridge * The materials are virtually maintenance-free and not subject to degradation from moisture, rot, insects and weather. 180900ZMay2012 2 Philip R. Columbus/571-256-9774/philip.r.columbus.civ@mail.mil/ Background

127

Properties of composites  

SciTech Connect

Well known is the application of the Rule of Mixtures in the estimate of composite properties such as the modulus of elasticity, thermal conductivity along the fiber orientations, and electrical conductivity in a linear system. However, this same rule does not govern the cited properties in the transverse direction, including the unidirectional ultimate strength, because of the presence of nonlinearity. An energy criterion is proposed herein to predict the ultimate strength of the composite in general. By making use of the Divergence Theorem, and the consideration of the Dynamic Stress Intensity Factor, the resulting formula, a function of constituent properties in a given volume fraction, agrees within 12% of test data for currently available composites. 7 references, 3 figures, 2 tables.

Fan, T.C.; Knapp, J.

1987-07-01T23:59:59.000Z

128

Ceramic composite coating  

DOE Patents (OSTI)

A thin, room-temperature-curing, ceramic composite for coating and patching etal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.

Wicks, George G. (Aiken, SC)

1997-01-01T23:59:59.000Z

129

Ceramic composite coating  

DOE Patents (OSTI)

A thin, room-temperature-curing, ceramic composite for coating and patching metal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.

Wicks, G.G.

1997-01-21T23:59:59.000Z

130

Abrasion resistant composition  

DOE Patents (OSTI)

A surface covering composition of abrasion resistant character adapted for disposition in overlying bonded relation to a metal substrate. The surface covering composition includes metal carbide particles within a metal matrix at a packing factor of not less than about 0.6. Not less than about 40 percent by weight of the metal carbide particles are characterized by an effective diameter in the range of +14-32 mesh prior to introduction to the metal matrix. Not less than about 3 percent by weight of the metal carbide particles are characterized by an effective diameter of +60 mesh prior to introduction to the metal matrix.

Fischer, Keith D; Barnes, Christopher A; Henderson, Stephen L

2014-05-13T23:59:59.000Z

131

Composition for absorbing hydrogen  

DOE Patents (OSTI)

A hydrogen absorbing composition is described. The composition comprises a porous glass matrix, made by a sol-gel process, having a hydrogen-absorbing material dispersed throughout the matrix. A sol, made from tetraethyl orthosilicate, is mixed with a hydrogen-absorbing material and solidified to form a porous glass matrix with the hydrogen-absorbing material dispersed uniformly throughout the matrix. The glass matrix has pores large enough to allow gases having hydrogen to pass through the matrix, yet small enough to hold the particles dispersed within the matrix so that the hydrogen-absorbing particles are not released during repeated hydrogen absorption/desorption cycles.

Heung, L.K.; Wicks, G.G.; Enz, G.L.

1995-05-02T23:59:59.000Z

132

Composition for radiation shielding  

DOE Patents (OSTI)

A composition for use as a radiation shield. The shield has a depleted urum core for absorbing gamma rays and a bismuth coating for preventing chemical corrosion and absorbing gamma rays. Alternatively, a sheet of gadolinium may be positioned between the uranium core and the bismuth coating for absorbing neutrons. The composition is preferably in the form of a container for storing materials that emit radiation such as gamma rays and neutrons. The container is preferably formed by casting bismuth around a pre-formed uranium container having a gadolinium sheeting, and allowing the bismuth to cool. The resulting container is a structurally sound, corrosion-resistant, radiation-absorbing container.

Kronberg, James W. (Aiken, SC)

1994-01-01T23:59:59.000Z

133

Nutrient Composition of Feeds.  

E-Print Network (OSTI)

TEXAS A&M U~IIVERSITY liBRAR B-1553 Texas Agricultural Extension Service Nutnent Composition of F~l R y " Ronald J. Gill and Dennis B. Herd* APR 20 1987 Forages normally supply protein and digestible energy cheaper than any other feedstuff...TEXAS A&M U~IIVERSITY liBRAR B-1553 Texas Agricultural Extension Service Nutnent Composition of F~l R y " Ronald J. Gill and Dennis B. Herd* APR 20 1987 Forages normally supply protein and digestible energy cheaper than any other feedstuff...

Gill, Ronald J.; Herd, Dennis B.

1986-01-01T23:59:59.000Z

134

ZPR-3 Assembly 11 : A cylindrical sssembly of highly enriched uranium and depleted uranium with an average {sup 235}U enrichment of 12 atom % and a depleted uranium reflector.  

SciTech Connect

Over a period of 30 years, more than a hundred Zero Power Reactor (ZPR) critical assemblies were constructed at Argonne National Laboratory. The ZPR facilities, ZPR-3, ZPR-6, ZPR-9 and ZPPR, were all fast critical assembly facilities. The ZPR critical assemblies were constructed to support fast reactor development, but data from some of these assemblies are also well suited for nuclear data validation and to form the basis for criticality safety benchmarks. A number of the Argonne ZPR/ZPPR critical assemblies have been evaluated as ICSBEP and IRPhEP benchmarks. Of the three classes of ZPR assemblies, engineering mockups, engineering benchmarks and physics benchmarks, the last group tends to be most useful for criticality safety. Because physics benchmarks were designed to test fast reactor physics data and methods, they were as simple as possible in geometry and composition. The principal fissile species was {sup 235}U or {sup 239}Pu. Fuel enrichments ranged from 9% to 95%. Often there were only one or two main core diluent materials, such as aluminum, graphite, iron, sodium or stainless steel. The cores were reflected (and insulated from room return effects) by one or two layers of materials such as depleted uranium, lead or stainless steel. Despite their more complex nature, a small number of assemblies from the other two classes would make useful criticality safety benchmarks because they have features related to criticality safety issues, such as reflection by soil-like material. ZPR-3 Assembly 11 (ZPR-3/11) was designed as a fast reactor physics benchmark experiment with an average core {sup 235}U enrichment of approximately 12 at.% and a depleted uranium reflector. Approximately 79.7% of the total fissions in this assembly occur above 100 keV, approximately 20.3% occur below 100 keV, and essentially none below 0.625 eV - thus the classification as a 'fast' assembly. This assembly is Fast Reactor Benchmark No. 8 in the Cross Section Evaluation Working Group (CSEWG) Benchmark Specificationsa and has historically been used as a data validation benchmark assembly. Loading of ZPR-3 Assembly 11 began in early January 1958, and the Assembly 11 program ended in late January 1958. The core consisted of highly enriched uranium (HEU) plates and depleted uranium plates loaded into stainless steel drawers, which were inserted into the central square stainless steel tubes of a 31 x 31 matrix on a split table machine. The core unit cell consisted of two columns of 0.125 in.-wide (3.175 mm) HEU plates, six columns of 0.125 in.-wide (3.175 mm) depleted uranium plates and one column of 1.0 in.-wide (25.4 mm) depleted uranium plates. The length of each column was 10 in. (254.0 mm) in each half of the core. The axial blanket consisted of 12 in. (304.8 mm) of depleted uranium behind the core. The thickness of the depleted uranium radial blanket was approximately 14 in. (355.6 mm), and the length of the radial blanket in each half of the matrix was 22 in. (558.8 mm). The assembly geometry approximated a right circular cylinder as closely as the square matrix tubes allowed. According to the logbook and loading records for ZPR-3/11, the reference critical configuration was loading 10 which was critical on January 21, 1958. Subsequent loadings were very similar but less clean for criticality because there were modifications made to accommodate reactor physics measurements other than criticality. Accordingly, ZPR-3/11 loading 10 was selected as the only configuration for this benchmark. As documented below, it was determined to be acceptable as a criticality safety benchmark experiment. A very accurate transformation to a simplified model is needed to make any ZPR assembly a practical criticality-safety benchmark. There is simply too much geometric detail in an exact (as-built) model of a ZPR assembly, even a clean core such as ZPR-3/11 loading 10. The transformation must reduce the detail to a practical level without masking any of the important features of the critical experiment. And it must do this without increasing the total uncertain

Lell, R. M.; McKnight, R. D.; Tsiboulia, A.; Rozhikhin, Y.; National Security; Inst. of Physics and Power Engineering

2010-09-30T23:59:59.000Z

135

Heavy Petroleum Composition. 4. Asphaltene Compositional Space  

Science Journals Connector (OSTI)

(1, 6, 7, 13, 28, 42-45) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) is currently the only analytical technique capable of direct speciation (at the level of molecular formula assignment) of individual components in complex petroleum samples, especially polar and heavy oil fractions, such as asphaltenes. ... The macrostructures of the asphaltene fractions from 7 different native crude petroleums, a gilsonite asphaltene, and asphaltene from a heavy asphaltic oil, and the resin fractions from 4 crude petroleums were studied by mol.-wt. ... observations and simulation results at reservoir conditions using the PC-SAFT equation of state on the effect of compositional changes in live oils caused by two common processes in the oil industry: oil-based-mud (OBM) contamination and reinjection of assocd. ...

Amy M. McKenna; Alan G. Marshall; Ryan P. Rodgers

2013-01-17T23:59:59.000Z

136

Composite Adversary Team Program  

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

introduCtion introduCtion The Office of Security Evaluations, within the Office of Health, Safety and Security's Office of Independent Oversight, provides national-level oversight of safeguards and security programs throughout the Department of Energy (DOE) and the National Nuclear Security Administration. Independent Oversight established the Composite Adversary Team (CAT) to provide a group of

137

BODY COMPOSITION -ENERGY EXPENDITURE  

E-Print Network (OSTI)

BODY COMPOSITION - ENERGY EXPENDITURE Validation of dual, X-ray absorptiometry (DXA) for body for BW, BMC and FC were significantly correlated with scale BW (r== 0.999), chemical calcium (r=0.992) and chemical fat (r= 0.971).Regression analy- sis showed that BW was accurately mea- sured, but FC

Paris-Sud XI, Université de

138

Composite Load Model Evaluation  

SciTech Connect

The WECC load modeling task force has dedicated its effort in the past few years to develop a composite load model that can represent behaviors of different end-user components. The modeling structure of the composite load model is recommended by the WECC load modeling task force. GE Energy has implemented this composite load model with a new function CMPLDW in its power system simulation software package, PSLF. For the last several years, Bonneville Power Administration (BPA) has taken the lead and collaborated with GE Energy to develop the new composite load model. Pacific Northwest National Laboratory (PNNL) and BPA joint force and conducted the evaluation of the CMPLDW and test its parameter settings to make sure that: • the model initializes properly, • all the parameter settings are functioning, and • the simulation results are as expected. The PNNL effort focused on testing the CMPLDW in a 4-bus system. An exhaustive testing on each parameter setting has been performed to guarantee each setting works. This report is a summary of the PNNL testing results and conclusions.

Lu, Ning; Qiao, Hong (Amy)

2007-09-30T23:59:59.000Z

139

Daedalus: Fiery compositions  

Science Journals Connector (OSTI)

... Combustion is seldom a steady process. Most flames oscillate in the sub-audio region; singing flames and some pyrotechnic compositions whistle at much higher frequencies. Daedalus now ... , and the firework will howl out a predictable tone. But how to record an audio signal on such a firework? An electrolytic process seems hopeful. A stick of pyrotechnic ...

David Jones

1999-07-22T23:59:59.000Z

140

General composition of software artifacts  

Science Journals Connector (OSTI)

Composition is the process of creating new artifacts from a set of input artifacts by combining the content of the input artifacts according to some given specifications. Composition engines are a distinct kind of software component. Like compilers, ...

William Harrison; Harold Ossher; Peri Tarr

2006-03-01T23:59:59.000Z

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


141

Composite drill pipe  

DOE Patents (OSTI)

A composite pipe segment is formed to include tapered in wall thickness ends that are each defined by opposed frustoconical surfaces conformed for self centering receipt and intimate bonding contact within an annular space between corresponding surfaces of a coaxially nested set of metal end pieces. The distal peripheries of the nested end pieces are then welded to each other and the sandwiched and bonded portions are radially pinned. The composite segment may include imbedded conductive leads and the axial end portions of the end pieces are shaped to form a threaded joint with the next pipe assembly that includes a contact ring in one pipe assembly pierced by a pointed contact in the other to connect the corresponding leads across the joint.

Leslie, James C. (Fountain Valley, CA); Leslie, II, James C. (Mission Viejo, CA); Heard, James (Huntington Beach, CA); Truong, Liem (Anaheim, CA), Josephson; Marvin (Huntington Beach, CA), Neubert; Hans (Anaheim, CA)

2008-12-02T23:59:59.000Z

142

Composition for radiation shielding  

DOE Patents (OSTI)

A composition for use as a radiation shield is disclosed. The shield has a depleted uranium core for absorbing gamma rays and a bismuth coating for preventing chemical corrosion and absorbing gamma rays. Alternatively, a sheet of gadolinium may be positioned between the uranium core and the bismuth coating for absorbing neutrons. The composition is preferably in the form of a container for storing materials that emit radiation such as gamma rays and neutrons. The container is preferably formed by casting bismuth around a pre-formed uranium container having a gadolinium sheeting, and allowing the bismuth to cool. The resulting container is a structurally sound, corrosion-resistant, radiation-absorbing container. 2 figs.

Kronberg, J.W.

1994-08-02T23:59:59.000Z

143

Aerogel Composite LLC | Open Energy Information  

Open Energy Info (EERE)

Aerogel Composite LLC Jump to: navigation, search Name: Aerogel Composite LLC Place: Storrs, Connecticut Zip: 6269 Product: Developer of aerogel based composite materials for a...

144

Multiscale Modeling and Homogenization of Composite Materials  

E-Print Network (OSTI)

Schematics of fiber composite . . . . . . . . . .of long fiber sic/ti composite materials. Comput. Methodsof Fibre-reinforced composites. Wiley, 4th edition, 2002. [

Mseis, George

2010-01-01T23:59:59.000Z

145

Composite bone substitutes prepared by two methods  

E-Print Network (OSTI)

Hydroxyapatite-polyethylene composites: effect of graftingof braded carbon/PEEK composite compression bone plates,”Koch, “Hydroxyapatite/SiO2 Composites via Freeze Casting for

Lee, Hoe Yun; Lee, Hoe Yun

2012-01-01T23:59:59.000Z

146

Composite Beings in Neo-Babylonian Art  

E-Print Network (OSTI)

Ninurta and the Turtle: Composite Text. ” The ElectronicAND POSTURE OF NEO-BABYLONIAN COMPOSITE BEINGS KEY TO BODYgenius grapples with other composite beings on either side.

Gane, Constance E.

2012-01-01T23:59:59.000Z

147

Composite materials with integrated embedded sensing networks  

E-Print Network (OSTI)

Interlaminar Response of Composite Materials , ed. N. J.in fibre-reinforced composite structures with embedded fibreDutton, and D. Kelly. 2004. Composite Materials for Aircraft

Schaaf, Kristin Leigh

2008-01-01T23:59:59.000Z

148

Desensitization of metastable intermolecular composites  

DOE Patents (OSTI)

A method to substantially desensitize a metastable intermolecular composite material to electrostatic discharge and friction comprising mixing the composite material with an organic diluent and removing enough organic diluent from the mixture to form a mixture with a substantially putty-like consistency, as well as a concomitant method of recovering the metastable intermolecular composite material.

Busse, James R. (South Fork, CO); Dye, Robert C. (Los Alamos, NM); Foley, Timothy J. (Los Alamos, NM); Higa, Kelvin T. (Ridgecrest, CA); Jorgensen, Betty S. (Jemez Springs, NM); Sanders, Victor E. (White Rock, NM); Son, Steven F. (Los Alamos, NM)

2011-04-26T23:59:59.000Z

149

Chemical composition of melanin  

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

Chemical composition of melanin Chemical composition of melanin Name: Peggy M Siemers Status: N/A Age: N/A Location: N/A Country: N/A Date: N/A Question: What is the chemical composition of Melanin by specific amino acids, or the DNA code for melanin? Replies: This is a good question! The answer is somewhat complex and I'm sure I don't have all the details but here goes... First, there is not a specific DNA code for melanin because like many biomolecules, it is not the result of a single gene product. People that are deficient in melanin are oculo/dermal albinos and I believe there have been seven different types of mutations. These different mutations reflect the multiple steps required to produce melanin. The original building block for melanin is tyrosine, one of the amino acids. This amino acid is modified by enzymes to produce the building block (monomer) for melanin synthesis by a process called polymerization that is also controlled by an enzyme. The polymers ,I believe, can attain diff3erent lengths and they can also form aggregates of different sizes alone and in combination with other molecules such as proteins. This is in part responsible for differences in coloration seen within and between individuals. NEWTON RULES

150

Micromechanical Damage Models for Continuous Fiber Reinforced Composite Materials  

E-Print Network (OSTI)

of metal and ceramic-matrix composites, Acta Metallurgica etMMCs) and ceramic matrix composites (CMCs). In general, PMCsPolymer Matrix Composite Ceramic Matrix Composite Composite

Wu, Yi

2013-01-01T23:59:59.000Z

151

Robust Polymer Composite Membranes for Hydrogen Separation |...  

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

Robust Polymer Composite Membranes for Hydrogen Separation Robust Polymer Composite Membranes for Hydrogen Separation polymercompositemembranes.pdf More Documents & Publications...

152

Composition of Permian seawater  

SciTech Connect

The authors demonstrated that fluid inclusions in Miocene halite can be used to define the composition of contemporary Miocene seawater. During the past year the authors, have extracted inclusion fluids from halite in the Lower Permian Wellington Formation near Lyons, Kansas and from the Upper Permian Salado Formation near Carlsbad, New Mexico to define the composition of Permian seawater. The extracted inclusion fluids were analyzed by ion chromatography. The concentration of Na/sup +/, Cl/sup -/, and Mg/sup +2/ in these fluids along the evaporation path of present-day seawater. Compared to evaporated modern seawater the solutions are slightly enriched with respect to Br/sup -/ and K/sup +/. The excess of these ions is probably due to heir transfer from enclosing halite to the inclusion fluids during recrystallization. The concentration of SO/sub 4//sup -2/ in the inclusion fluids is lower than in evaporated modern seawater. The SO/sub 4//sup -2/ deficit in the fluids from halite in the Wellington Formation is almost certainly due to dolomitization followed by gypsum and/or anhydrite precipitation. No difference between the SO/sub 4//sup -2/ concentration of lower Permian and present-day seawater is required to explain the SO/sub 4//sup -2/ deficit in these fluids. This explanation does not account for the SO/sub 4//sup -2/ deficit in the inclusion fluids from the Salado Formation. The concentration of Li/sup +/ in the inclusion fluids is higher by a factor of ca. 4 than the concentration to be expected from the evaporation of modern seawater. With this exception, the composition of Permian seawater appears to have been remarkably similar to that of modern seawater.

Lazar, B.; Friedmann, T.J.; Holland, H.D.

1985-01-01T23:59:59.000Z

153

Composite turbine bucket assembly  

DOE Patents (OSTI)

A composite turbine blade assembly includes a ceramic blade including an airfoil portion, a shank portion and an attachment portion; and a transition assembly adapted to attach the ceramic blade to a turbine disk or rotor, the transition assembly including first and second transition components clamped together, trapping said ceramic airfoil therebetween. Interior surfaces of the first and second transition portions are formed to mate with the shank portion and the attachment portion of the ceramic blade, and exterior surfaces of said first and second transition components are formed to include an attachment feature enabling the transition assembly to be attached to the turbine rotor or disk.

Liotta, Gary Charles; Garcia-Crespo, Andres

2014-05-20T23:59:59.000Z

154

Composite oxygen transport membrane  

DOE Patents (OSTI)

A method of producing a composite oxygen ion membrane and a composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln.sub.1-xA.sub.x).sub.wCr.sub.1-yB.sub.yO.sub.3-.delta. and a doped zirconia. In the porous fuel oxidation layer and the optional porous surface exchange layer, A is Calcium and in the dense separation layer A is not Calcium and, preferably is Strontium. Preferred materials are (La.sub.0.8Ca.sub.0.2).sub.0.95Cr.sub.0.5Mn.sub.0.5O.sub.3-.delta. for the porous fuel oxidation and optional porous surface exchange layers and (La.sub.0.8Sr.sub.0.2).sub.0.95Cr.sub.0.5Fe.sub.0.5O.sub.3-.delta. for the dense separation layer. The use of such materials allows the membrane to sintered in air and without the use of pore formers to reduce membrane manufacturing costs. The use of materials, as described herein, for forming the porous layers have application for forming any type of porous structure, such as a catalyst support.

Christie, Gervase Maxwell; Lane, Jonathan A.

2014-08-05T23:59:59.000Z

155

Cast dielectric composite linear accelerator  

DOE Patents (OSTI)

A linear accelerator having cast dielectric composite layers integrally formed with conductor electrodes in a solventless fabrication process, with the cast dielectric composite preferably having a nanoparticle filler in an organic polymer such as a thermosetting resin. By incorporating this cast dielectric composite the dielectric constant of critical insulating layers of the transmission lines of the accelerator are increased while simultaneously maintaining high dielectric strengths for the accelerator.

Sanders, David M. (Livermore, CA); Sampayan, Stephen (Manteca, CA); Slenes, Kirk (Albuquerque, NM); Stoller, H. M. (Albuquerque, NM)

2009-11-10T23:59:59.000Z

156

Alumina-based ceramic composite  

DOE Patents (OSTI)

An improved ceramic composite comprising oxide ceramic particulates, nonoxide ceramic particulates selected from the group consisting of carbides, borides, nitrides of silicon and transition metals and mixtures thereof, and a ductile binder selected from the group consisting of metallic, intermetallic alloys and mixtures thereof is described. The ceramic composite is made by blending powders of the ceramic particulates and the ductile to form a mixture and consolidating the mixture of under conditions of temperature and pressure sufficient to produce a densified ceramic composite.

Alexander, Kathleen B. (Oak Ridge, TN); Tiegs, Terry N. (Lenoir City, TN); Becher, Paul F. (Oak Ridge, TN); Waters, Shirley B. (Knoxville, TN)

1996-01-01T23:59:59.000Z

157

Gradient Sliding for Composite Optimization  

E-Print Network (OSTI)

Noname manuscript No. (will be inserted by the editor). Gradient Sliding for Composite Optimization. Guanghui Lan the date of receipt and acceptance should ...

2014-06-11T23:59:59.000Z

158

TPI Composites | Open Energy Information  

Open Energy Info (EERE)

Name: TPI Composites Place: Scottsdale, Arizona Zip: AZ 85253 Sector: Services, Wind energy Product: String representation "TPI offers a fu ... litary markets." is too long....

159

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

SciTech Connect

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.

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

1998-12-23T23:59:59.000Z

160

The Universe Adventure - Composition  

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

Elemental Abundances Elemental Abundances Understanding Our History A Star is Born An accretion disk forms during the birth of a star. There are precise physical and chemical processes that govern the evolution of planets, stars, and galaxies. By analyzing the structure and chemical content of astronomical objects, scientists can garner valuable information about what the universe's conditions must have been like long ago in order to account for currently observed elemental ratios. Formation of a Galaxy A forming galaxy. The Composition of the Earth We can begin in our own backyard. Geologists have determined that the Earth is composed primarily of heavy elements (those containing many protons and neutrons). The crust and mantle are made up of compounds containing large traces of oxygen, nickel, aluminum, magnesium, iron, silicon, and sulfur.

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


161

Nanostructured composite reinforced material  

DOE Patents (OSTI)

A family of materials wherein nanostructures and/or nanotubes are incorporated into a multi-component material arrangement, such as a metallic or ceramic alloy or composite/aggregate, producing a new material or metallic/ceramic alloy. The new material has significantly increased strength, up to several thousands of times normal and perhaps substantially more, as well as significantly decreased weight. The new materials may be manufactured into a component where the nanostructure or nanostructure reinforcement is incorporated into the bulk and/or matrix material, or as a coating where the nanostructure or nanostructure reinforcement is incorporated into the coating or surface of a "normal" substrate material. The nanostructures are incorporated into the material structure either randomly or aligned, within grains, or along or across grain boundaries.

Seals, Roland D. (Oak Ridge, TN); Ripley, Edward B. (Knoxville, TN); Ludtka, Gerard M. (Oak Ridge, TN)

2012-07-31T23:59:59.000Z

162

Composite coatings improve engines  

SciTech Connect

About 40% of the power loss in engine systems is attributed to the adverse effects of friction in reciprocating engine components. Over half of this power loss is caused by friction between pistons, piston rings, and cylinder bores. In addition, engine parts may be attacked by corrosive gasoline substitutes such as liquid propane gas and alcohol/gasoline mixtures. To solve both friction and corrosion problems, Nihon Parkerizing Co. has improved the nickel-phosphorus based ceramic composite (NCC) plating technology that was developed for cylinder bores and pistons by Suzuki Motor Co. in the mid 1970s. Iron and nickel-based composite plating technologies have been investigated since the early 1970s, and a few have been used on small two-stroke motorcycle, outboard marine, snowmobile, and some luxury passenger car engine components. Both nickel- and iron-base plating processes are used on cylinders and pistons because they offer excellent wear and corrosion resistance. Nickel-base films have higher corrosion resistance than those based on iron, and are capable of withstanding the corrosive conditions characteristic of high methanol fuels. Unfortunately, they experience a decrease in hardness as operating temperatures increase. However, NCC coatings with phosphorus additions have high hardness even under severe operating conditions, and hardness increases upon exposure to elevated temperatures. In addition to high hardness and corrosion resistance, NCC coatings provide a low friction coefficient, which contributes to the reduction of friction losses between sliding components. When used in low-quality or alcohol fuels, the corrosion resistance of NCC coatings is far higher than that of Fe-P plating. Additionally, the coatings reduce wall and piston temperature, wear of ring groove and skirt, and carbon deposit formation, and they improve output power and torque. These advantages all contribute to the development of light and efficient engines with better fuel mileage.

Funatani, K.; Kurosawa, K. (Nihon Parkerizing Co. Ltd., Nagoya (Japan))

1994-12-01T23:59:59.000Z

163

Quench energies of composite superconductors  

E-Print Network (OSTI)

Quench energies of composite superconductors A.VI. Gurevich, R.G. Mints and A.A. Pukhov The Institute for High Temperatures, Moscow, 12741 2, USSR Received 3 June 1988 The quench energy of composite for the cases of one-, two- and three-dimensional heat propagation. Quench energy is shown to be both higher

Mints, Roman G.

164

Vacuum flash evaporated polymer composites  

DOE Patents (OSTI)

A method for fabrication of polymer composite layers in a vacuum is disclosed. More specifically, the method of dissolving salts in a monomer solution, vacuum flash evaporating the solution, condensing the flash evaporated solution as a liquid film, and forming the condensed liquid film into a polymer composite layer on a substrate is disclosed.

Affinito, J.D.; Gross, M.E.

1997-10-28T23:59:59.000Z

165

Composition of Cooked Fish Dishes  

E-Print Network (OSTI)

Composition of Cooked Fish Dishes CIRCULAR 29 Fish and Wildlife Service John L. Farley, Director United States Department of the Interior Douglas McKay, Secretary #12;#12;Composition of Cooked Fish Dishes CIRCULAR 29 Fish and Wildlife Service John L. Farley, Director United States Department

166

Compositions of constructed microbial mats  

DOE Patents (OSTI)

Compositions and methods of use of constructed microbial mats, comprising cyanobacteria and purple autotrophic bacteria and an organic nutrient source, in a laminated structure, are described. The constructed microbial mat is used for bioremediation of different individual contaminants and for mixed or multiple contaminants, and for production of beneficial compositions and molecules.

Bender, Judith A. (Atlanta, GA); Phillips, Peter C. (Decatur, GA)

1999-01-01T23:59:59.000Z

167

Surface decontamination compositions and methods  

DOE Patents (OSTI)

Clay-based compositions capable of absorbing contaminants from surfaces or objects having surface faces may be applied to a surface and later removed, the removed clay-based compositions absorbing at least a portion of the contaminant from the surface or object to which it was applied.

Wright; Karen E. (Idaho Falls, ID); Cooper, David C. (Idaho Falls, ID); Peterman, Dean R. (Idaho Falls, ID); Demmer, Ricky L. (Idaho Falls, ID); Tripp, Julia L. (Pocatello, ID); Hull, Laurence C. (Idaho Falls, ID)

2011-03-29T23:59:59.000Z

168

Materials - Recycling - Polymer Matrix Composites  

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

Recycling of Polymer Matrix Composites Recycling of Polymer Matrix Composites Polymer matrix composites Carbon fibers recovered from a epoxy-based polymer matrix composite. Carbon fiber reinforced polymer matrix composites (PMCs) are materials with superior strength-to-weight ratios. Finding increased applications in the aerospace industry, PMCs are now being evaluated for possible use in automobile construction. The materialÂ’s high cost, however, along with concerns about whether the PMCs will be recyclable when the vehicles reach the end of their useful lives, are barriers to its widespread use. With funding provided by the U.S. Department of EnergyÂ’s Vehicle Technologies Program (formerly called the Office of Advanced Transportation Technologies), Argonne is developing an efficient and cost-effective

169

Synthesis of tungsten nano composites  

SciTech Connect

Tungsten-copper composites are currently used as thermal management substrates on a commercial basis. Properties such as high corrosion/erosion resistance, good thermal and electrical conductivity and sufficient mechanical strength and thermal shock resistance make tungsten-copper based composites attractive as electrode materials in automobile sparkplugs. These composites are mostly manufactured through infiltration and mechanical alloying. The products, however, generally lack compositional homogeneity. In this study, chemical approaches were used to synthesize W-Cu and W-Cu-TiB{sub 2} composites. The powders obtained had an average agglomerate size of 1.2 {mu}m and consisted of 50--200 mn sized primary particles. The W and Cu distribution was uniform on at least the submicron level. Consolidation studies on a W-Cu-TiB{sub 2} sample showed no substantial grain growth at 1,350 C under 500 MPa pressure for 2 minutes. The morphology of the grains, however, underwent noticeable changes.

Yu, C.C.; Kumar, R.; Sudarshan, T.S. [Materials Modification, Inc., Fairfax, VA (United States)

1996-06-01T23:59:59.000Z

170

Development and characterization of renewable resource- structural composite materials  

E-Print Network (OSTI)

Characteristics …. …. …………………. ……… …………………. ………CompositeTest Procedure …. …………………..………… 4.1 Composite ConstituentSelection …. …. ……………………………. … 4.2 Composite Processing

Cutter, Andrea Gillian

2008-01-01T23:59:59.000Z

171

Combustible structural composites and methods of forming combustible structural composites  

DOE Patents (OSTI)

Combustible structural composites and methods of forming same are disclosed. In an embodiment, a combustible structural composite includes combustible material comprising a fuel metal and a metal oxide. The fuel metal is present in the combustible material at a weight ratio from 1:9 to 1:1 of the fuel metal to the metal oxide. The fuel metal and the metal oxide are capable of exothermically reacting upon application of energy at or above a threshold value to support self-sustaining combustion of the combustible material within the combustible structural composite. Structural-reinforcing fibers are present in the composite at a weight ratio from 1:20 to 10:1 of the structural-reinforcing fibers to the combustible material. Other embodiments and aspects are disclosed.

Daniels, Michael A.; Heaps, Ronald J.; Steffler, Eric D.; Swank, W. David

2013-04-02T23:59:59.000Z

172

Combustible structural composites and methods of forming combustible structural composites  

DOE Patents (OSTI)

Combustible structural composites and methods of forming same are disclosed. In an embodiment, a combustible structural composite includes combustible material comprising a fuel metal and a metal oxide. The fuel metal is present in the combustible material at a weight ratio from 1:9 to 1:1 of the fuel metal to the metal oxide. The fuel metal and the metal oxide are capable of exothermically reacting upon application of energy at or above a threshold value to support self-sustaining combustion of the combustible material within the combustible structural composite. Structural-reinforcing fibers are present in the composite at a weight ratio from 1:20 to 10:1 of the structural-reinforcing fibers to the combustible material. Other embodiments and aspects are disclosed.

Daniels, Michael A. (Idaho Falls, ID); Heaps, Ronald J. (Idaho Falls, ID); Steffler, Eric D (Idaho Falls, ID); Swank, William D. (Idaho Falls, ID)

2011-08-30T23:59:59.000Z

173

Continuity and Performance in Composite Electrodes  

E-Print Network (OSTI)

C Figure 6 Au coating Cathode composite C coating - Currentof as-received LiFePCv composite electrodes: a) top and b)paths in A u coated composite electrode. The spheres

Chen, Guoying

2010-01-01T23:59:59.000Z

174

ENGINEERING MECHANICS SEMINARSENGINEERING MECHANICS SEMINARS THINK COMPOSITE  

E-Print Network (OSTI)

ENGINEERING MECHANICS SEMINARSENGINEERING MECHANICS SEMINARS THINK COMPOSITE "THINK outside the box" for more competitive structural COMPOSITES Dr. Melih Papila Visiting Professor, Aero/Astro Department, Stanford University. Adv. Composites and Polymer Processing Lab., Sabanci University, Istanbul. mpapila

Ponce, V. Miguel

175

Methods and compositions using calcium carbonate  

DOE Patents (OSTI)

Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided.

Constantz, Brent R. (Portola Valley, CA); Farsad, Kasra (San Jose, CA); Camire, Chris (San Jose, CA); Patterson, Joshua (Freedom, CA); Ginder-Vogel, Matthew (Los Gatos, CA); Yaccato, Karin (San Jose, CA); Stagnaro, John (Santa Clara, CA); Devenney, Martin (Mountain View, CA); Ries, Justin (Chapel Hill, NC)

2011-11-22T23:59:59.000Z

176

Micromechanical Damage Models for Continuous Fiber Reinforced Composite Materials  

E-Print Network (OSTI)

reinforced plastic matrix composite, Material and Design,1995). Failure of fiber composites: a lattice green functionreinforced titanium composites, Composites Science and

Wu, Yi

2013-01-01T23:59:59.000Z

177

Thermoelectric ŤFabrics? based on carbon nanotube composites...  

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

based on carbon nanotube composites Composite films of multi-walled carbon nanotubespolyvinylidene fluoride layered into multiple element modules, results in...

178

Nanotube Composite Anode Materials | Argonne National Laboratory  

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

Nanotube Composite Anode Materials Technology available for licensng: A composite material suitable for use in an anode for a lithium-ion battery Reduces manufacturing costs....

179

COMIB: Composite Icon Browser for Multimedia Databases  

Science Journals Connector (OSTI)

COMIB (COMposite Icon Browser) is a graphical user interface for ... multimedia objects simultaneously in a screen using composite icons, that may be thumbnails of the several...

Jaehyuk Cha…

1996-01-01T23:59:59.000Z

180

Heat insulation layer of polymer composite material  

Science Journals Connector (OSTI)

A new heat insulation layer polymer composite material is developed, within whose composition there is foam polyurethane and basaltoplastic. Results are provided for...

G. P. Ponomareva; A. A. Artemenko; O. M. Sladkov…

2010-05-01T23:59:59.000Z

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


181

Correlation Between Optical Properties And Chemical Composition...  

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

Between Optical Properties And Chemical Composition Of Sputter-deposited Germanium Cxide (GeOx) Films . Correlation Between Optical Properties And Chemical Composition Of...

182

Composites Technology for Hydrogen Pipelines  

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

Composites Technology Composites Technology for Hydrogen Pipelines Barton Smith, Barbara Frame, Larry Anovitz and Cliff Eberle Oak Ridge National Laboratory Pipeline Working Group Meeting Pipeline Working Group Meeting Aiken, South Carolina Aiken, South Carolina September 25-26, 2007 September 25-26, 2007 Managed by UT-Battelle for the Department of Energy 2 Managed by UT Battelle for the Department of Energy Presentation name - _ Composites Technology for Hydrogen Pipelines Fiber-reinforced polymer pipe Project Overview: Investigate application of has excellent burst and collapse composite, fiber-reinforced polymer pipeline pressure ratings, large tensile technology for hydrogen transmission and and compression strengths, and distribution. superior chemical and corrosion resistance. Long lengths can be

183

Therapeutic tin-117m compositions  

DOE Patents (OSTI)

The invention provides a method for the palliation of bone pain due to cancer by the administration of a unique dosage of a tin-117m (Sn-117m) stannic chelate complex in a pharmaceutically acceptable composition. In addition, the invention provides a method for simultaneous palliation of bone pain and radiotherapy in cancer patients using compositions containing Sn-117m chelates. The invention also provides a method for palliating bone pain in cancer patients using Sn-117m-containing compositions and monitoring patient status by imaging the distribution of the Sn-117m in the patients. Also provided are pharmaceutically acceptable compositions containing Sn-117m chelate complexes for the palliation of bone pain in cancer patients.

Srivastava, Suresh C. (Setauket, NY); Meinken, George E. (Middle Island, NY); Mausner, Leonard F. (Stony Brook, NY); Atkins, Harold L. (Setauket, NY)

2003-01-01T23:59:59.000Z

184

Rapid prototyping of green composites  

E-Print Network (OSTI)

Rapid prototyping employs digital fabrication techniques to quickly manufacture parts. However, the available materials are not yet suitable for making strong, large or durable objects. Composites are materials which are ...

Peek, Nadya (Nadya Meile)

2010-01-01T23:59:59.000Z

185

Digital compositing with traditional artwork  

E-Print Network (OSTI)

This thesis presents a general method and guidelines for compositing digital characters into traditional artwork by matching a character to the perspective, lighting, style, and complexity of the particular work of art. The primary goal...

Stanley, Michael Leighton

2005-11-01T23:59:59.000Z

186

Corrosion of Titanium Matrix Composites  

SciTech Connect

The corrosion behavior of unalloyed Ti and titanium matrix composites containing up to 20 vol% of TiC or TiB{sub 2} was determined in deaerated 2 wt% HCl at 50, 70, and 90 degrees C. Corrosion rates were calculated from corrosion currents determined by extrapolation of the tafel slopes. All curves exhibited active-passive behavior but no transpassive region. Corrosion rates for Ti + TiC composites were similar to those for unalloyed Ti except at 90 degrees C where the composites were slightly higher. Corrosion rates for Ti + TiB{sub 2} composites were generally higher than those for unalloyed Ti and increased with higher concentrations of TiB{sub 2}. XRD and SEM-EDS analyses showed that the TiC reinforcement did not react with the Ti matrix during fabrication while the TiB{sub 2} reacted to form a TiB phase.

Covino, B.S., Jr.; Alman, D.E.

2002-09-22T23:59:59.000Z

187

Layered plasma polymer composite membranes  

DOE Patents (OSTI)

Layered plasma polymer composite fluid separation membranes are disclosed, which comprise alternating selective and permeable layers for a total of at least 2n layers, where n is [>=]2 and is the number of selective layers. 2 figs.

Babcock, W.C.

1994-10-11T23:59:59.000Z

188

Seawater degradation of polymeric composites  

E-Print Network (OSTI)

SEAWATER DEGRADATION OF POLYMERIC COMPOSITES A Thesis by TIMOTHY SEAN GRANT Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1991 Major... Subject: Mechanical Engineering SEAWATER DEGRADATION OF POLYMERIC COMPOSITES A Thesis by TIMOTHY SEAN GRANT Approved as to style and content by: Walter L. Bradley (Chair of mmittee) lan Letton (Member) arry ogan (Member) r John Whitcomb...

Grant, Timothy Sean

1991-01-01T23:59:59.000Z

189

Molybdenum disilicide alloy matrix composite  

DOE Patents (OSTI)

Compositions of matter consisting of matrix materials having silicon carbide dispersed throughout them and methods of making the compositions. A matrix material is an alloy of an intermetallic compound, molybdenum disilicide, and at least one secondary component which is a refractory silicide. The silicon carbide dispersant may be in the form of VLS whiskers, VS whiskers, or submicron powder or a mixture of these forms.

Petrovic, John J. (Los Alamos, NM); Honnell, Richard E. (Los Alamos, NM); Gibbs, W. Scott (Los Alamos, NM)

1991-01-01T23:59:59.000Z

190

Molybdenum disilicide alloy matrix composite  

DOE Patents (OSTI)

Compositions of matter consisting of matrix matrials having silicon carbide dispersed throughout them and methods of making the compositions. A matrix material is an alloy of an intermetallic compound, molybdenum disilicide, and at least one secondary component which is a refractory silicide. The silicon carbide dispersant may be in the form of VLS whiskers, VS whiskers, or submicron powder or a mixture of these forms.

Petrovic, John J. (Los Alamos, NM); Honnell, Richard E. (Los Alamos, NM); Gibbs, W. Scott (Los Alamos, NM)

1990-01-01T23:59:59.000Z

191

Method for preparing ceramic composite  

DOE Patents (OSTI)

A process for preparing ceramic composite comprising blending TiC particulates, Al.sub.2 O.sub.3 particulates and nickle aluminide and consolidating the mixture at a temperature and pressure sufficient to produce a densified ceramic composite having fracture toughness equal to or greater than 7 MPa m.sup.1/2, a hardness equal to or greater than 18 GPa.

Alexander, Kathleen B. (Oak Ridge, TN); Tiegs, Terry N. (Lenoir City, TN); Becher, Paul F. (Oak Ridge, TN); Waters, Shirley B. (Knoxville, TN)

1996-01-01T23:59:59.000Z

192

Method for preparing ceramic composite  

DOE Patents (OSTI)

A process is disclosed for preparing ceramic composite comprising blending TiC particulates, Al{sub 2}O{sub 3} particulates and nickel aluminide and consolidating the mixture at a temperature and pressure sufficient to produce a densified ceramic composite having fracture toughness equal to or greater than 7 MPa m{sup 1/2}, a hardness equal to or greater than 18 GPa. 5 figs.

Alexander, K.B.; Tiegs, T.N.; Becher, P.F.; Waters, S.B.

1996-01-09T23:59:59.000Z

193

Dense, finely, grained composite materials  

DOE Patents (OSTI)

Dense, finely grained composite materials comprising one or more ceramic phase or phase and one or more metallic and/or intermetallic phase or phases are produced by combustion synthesis. Spherical ceramic grains are homogeneously dispersed within the matrix. Methods are provided, which include the step of applying mechanical pressure during or immediately after ignition, by which the microstructures in the resulting composites can be controllably selected.

Dunmead, Stephen D. (Davis, CA); Holt, Joseph B. (San Jose, CA); Kingman, Donald D. (Danville, CA); Munir, Zuhair A. (Davis, CA)

1990-01-01T23:59:59.000Z

194

Compositions and methods for increasing cellulose production  

DOE Patents (OSTI)

This disclosure relates to methods and compositions for genetically altering cellulose biosynthesis.

Yang, Zhenbiao (Riverside, CA); Karr, Stephen (Camarillo, CA)

2012-05-01T23:59:59.000Z

195

Energetx Composites: Retooling Manufacturing, Creating Michigan Jobs |  

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

Energetx Composites: Retooling Manufacturing, Creating Michigan Energetx Composites: Retooling Manufacturing, Creating Michigan Jobs Energetx Composites: Retooling Manufacturing, Creating Michigan Jobs July 23, 2012 - 4:58pm Addthis Using its fiberglass technology expertise and a grant from the Energy Department's State Energy Program (SEP), Energetx Composites was able to shift its operations to producing wind turbine blades. | Photo courtesy of Energetx Composites. Using its fiberglass technology expertise and a grant from the Energy Department's State Energy Program (SEP), Energetx Composites was able to shift its operations to producing wind turbine blades. | Photo courtesy of Energetx Composites. Kristin Swineford Communication Specialist, Weatherization and Intergovernmental Programs What does this mean for me?

196

Z diagrams of composite objects  

Science Journals Connector (OSTI)

We examine the effect of particle compositeness on the importance of ‘‘Z diagrams’’, i.e., virtual particle-antiparticle states appearing in scattering processes. The examples of positronium in QED, and of the nucleon in the QCD-based quark model, are discussed in detail. Generally, if the composite particle consists of N constituents, its Z-diagram amplitude involves creation and annihilation of N constituent-anticonstituent pairs. This process (which we assume to be governed by Coulomb-type interactions with the ‘‘fine structure constant’’ ?) must take place in a small volume ?1/M3, where M is the particle’s mass; an additional suppression is due to the fact that the created system is electrically (or color) neutral. The composite particle’s Z-diagram amplitude is then suppressed, compared to that for an elementary particle, by at least a factor fZ?(q2/M2)[?2/(M3R3)]N-1, where q is the momentum transfer to the particle, and R the composite particle’s size. The decoupling of the composite Z diagrams at zero momentum transfer is consistent with low-energy theorems.

T. Jaroszewicz and Stanley J. Brodsky

1991-04-01T23:59:59.000Z

197

Genetic optimization of two-material composite laminates Laurent Grosset  

E-Print Network (OSTI)

the power of GAs for this application. COMPOSITE LAMINATE DESIGN Composite laminate optimization typically

Coello, Carlos A. Coello

198

Electrocodeposition of nanoparticle composite films using an impinging jet electrode  

E-Print Network (OSTI)

Electrocodeposition of Nanoparticle Composite Films Using anElectrocodeposition of Nanoparticle Composite Films Using an

Osborne, Steven J.

2006-01-01T23:59:59.000Z

199

Composite media for ion processing  

DOE Patents (OSTI)

Composite media, systems, and devices for substantially removing, or otherwise processing, one or more constituents of a fluid stream. The composite media comprise a plurality of beads, each having a matrix substantially comprising polyacrylonitrile (PAN) and supporting one or more active components which are effective in removing, by various mechanisms, one or more constituents from a fluid stream. Due to the porosity and large surface area of the beads, a high level of contact is achieved between composite media of the present invention and the fluid stream being processed. Further, the homogeneity of the beads facilitates use of the beads in high volume applications where it is desired to effectively process a large volume of flow per unit of time.

Mann, Nick R. (Blackfoot, ID); Wood, Donald J. (Peshastin, WA); Todd, Terry A. (Aberdeen, ID); Sebesta, Ferdinand (Prague, CZ)

2009-12-08T23:59:59.000Z

200

Characterisation of a Composite LEPS  

E-Print Network (OSTI)

A low energy photon spectrometer (LEPS), which is a composite planar HPGe, has been characterised experimentally. It has been shown that beyond 200 keV, effect of image charges deteriorates the efficiency of the detector in its addback mode. Data has been corrected on eventby- event basis resulting in improvement of the performance.

Basu, Moumita Roy; Bisoi, Abhijit; Sarkar, M Saha

2015-01-01T23:59:59.000Z

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


201

Solid-state radioluminescent compositions  

DOE Patents (OSTI)

A solid state radioluminescent composition for light source comprises an optically clear polymer organic matrix containing tritiated organic materials and dyes capable of "red" shifting primary scintillation emissions from the polymer matrix. The tritiated organic materials are made by reducing, with tritium, an unsaturated organic compound that prior to reduction contains olefinic or alkynylic bonds.

Clough, Roger L. (Albuquerque, NM); Gill, John T. (Miamisburg, OH); Hawkins, Daniel B. (Fairbanks, AK); Renschler, Clifford L. (Tijeras, NM); Shepodd, Timothy J. (Livermore, CA); Smith, Henry M. (Overland Park, KS)

1991-01-01T23:59:59.000Z

202

Method of manufacturing aerogel composites  

DOE Patents (OSTI)

Disclosed herewith is a process of forming an aerogel composite which comprises introducing a gaseous material into a formed aerogel monolith or powder, and causing decomposition of said gaseous material in said aerogel in amounts sufficient to cause deposition of the decomposition products of the gas on the surfaces of the pores of the said aerogel.

Cao, W.; Hunt, A.J.

1999-03-09T23:59:59.000Z

203

Design Composition Johannes R. Sametinger  

E-Print Network (OSTI)

Design Composition Johannes R. Sametinger Johannes Kepler Universität Linz A-4040 Linz, Austria and changeable software architectures is still a challenging task. Design patterns capture the expertise for reusable design solutions, but there is no methodical approach to providing conceptual design building

Keller, Rudolf K.

204

Two color machining of composites  

SciTech Connect

Quality cutting and drilling of 9 composite materials is possible using diode-pumped neodymium lasers. Machining at 1.06 {mu}m is improved by optimizing the pulse format of the diode-pumped neodymium lasers of the Precision Laser Machining (PLM) Consortium. Further improvements are obtained with the PLM lasers operating at 0.53 {mu}m.

Maher, W. [Boeing Defense & Space Group, Seattle, WA (United States)

1996-12-31T23:59:59.000Z

205

Sandia National Laboratories: Compact Linear Fesnel Reflector  

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

is collaborating with Sandia National Laboratories on a new concentrated solar power (CSP) installation with thermal energy storage. The CSP storage project combines Areva's...

206

Sandia National Laboratories: compact linear Fresnel reflector  

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

Partnership, Renewable Energy, Research & Capabilities, Solar, Solar Newsletter, SunShot, Systems Engineering AREVA and Sandia began operations of their molten salt...

207

Reflectors in wave equation imaging Frank Natterer  

E-Print Network (OSTI)

that the propagation obeys the wave equation 2 u t2 = c2 (u + q(t)(x - s)) (1.1) Here, c = c(x), x IRn is the local

Münster, Westfälische Wilhelms-Universität

208

Solar module having reflector between cells  

DOE Patents (OSTI)

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.

Kardauskas, Michael J. (Billerica, MA)

1999-01-01T23:59:59.000Z

209

Correlated-Intensity velocimeter for Arbitrary Reflector  

DOE Patents (OSTI)

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

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

210

Optical Reflectance Measurements for Commonly Used Reflectors  

E-Print Network (OSTI)

by the National Nuclear Security Administration, Office ofby the National Nuclear Security Administration, Office of

Janecek, Petr Martin

2009-01-01T23:59:59.000Z

211

Solar composition from the Genesis Discovery Mission  

Science Journals Connector (OSTI)

Solar composition from the Genesis Discovery Mission...gases differ in the Sun from other inner solar system objects. The N isotopic composition...discrepancies in the noble gas data from solar wind implanted in lunar soils. (ii) The...

D. S. Burnett; Genesis Science Team

2011-01-01T23:59:59.000Z

212

Preparation of Carbon Nanotube-Composite  

E-Print Network (OSTI)

A composite is made up of two distinct materials and the resulted properties are different from the individual precursors. Composite combines a huge or bulkier element called matrix and reinforcement called filler or fiber. Fiber is added...

Sharma, Sundeep

2011-08-08T23:59:59.000Z

213

Performance Engineering of Service Compositions John Grundy  

E-Print Network (OSTI)

and performance analysis, and discuss preliminary results from our research to date. We conclude with areasPerformance Engineering of Service Compositions John Grundy Dept Electrical and Computer research on tools for business process composition, performance engineering and dynamic system

Grundy, John

214

Standard Test Methods for Textile Composites  

Science Journals Connector (OSTI)

Standard testing methods for composite laminates reinforced with continuous networks of braided, woven, or stitched fibers have been evaluated. The microstructure of these "textile" composite materials differs significantly from that of tape laminates. ...

Masters J. E.; Portanova M. A.

1996-09-01T23:59:59.000Z

215

Design of Ferromagnetic Shape Memory Alloy Composites  

E-Print Network (OSTI)

, superelasticity, bending plate, coil spring. INTRODUCTION RECENTLY, FERROMAGNETIC SHAPE memory alloys (FSMAs torque actuator (bending of FSMA composite plate) and spring actuator (torsion of helical FSMA composite spring). KEY WORDS: shape memory alloy, ferromagnetic material, stress-induced martensite transformation

Taya, Minoru

216

Carbon Fiber Composite Cellular A Dissertation  

E-Print Network (OSTI)

Carbon Fiber Composite Cellular Structures ____________________________________ A Dissertation and honeycombs. However, for weight sensitive, ambient temperature applications, carbon fiber composites have emerged as a promising material due to its high specific strength and low density. Carbon fiber reinforced

Wadley, Haydn

217

COMIB: COMposite Icon Browser for multimedia databases  

Science Journals Connector (OSTI)

COMIB(COMposite Icon Browser) is a graphical user interface for...composite icons, that may be thumbnails of the several nested attribute values of those objects. Users can specify these attributes with a mouse w...

Jaehyuk Cha; Sukho Lee

1996-11-01T23:59:59.000Z

218

Solar composition from the Genesis Discovery Mission  

Science Journals Connector (OSTI)

...analyses. First, the solar wind atoms are extracted from...ion mass spectrometer hybrid at UCLA (4). The...compositions among inner solar system materials (8). The Genesis solar wind composition, measured...

D. S. Burnett; Genesis Science Team

2011-01-01T23:59:59.000Z

219

Optimization Online - Composite Proximal Bundle Method  

E-Print Network (OSTI)

Jul 30, 2009 ... Composite Proximal Bundle Method. Claudia Sagastizabal (sagastiz ***at*** impa.br). Abstract: We consider minimization of nonsmooth ...

Claudia Sagastizabal

2009-07-30T23:59:59.000Z

220

DARPA Efforts and Interests in Composites  

Energy Savers (EERE)

Systems * Materials Systems * Composites * Metallics * Coatings * Processing * Open Manufacturing * Additive Manufacturing * Material System Integration 5300F 4300F...

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


221

Biomass Compositional Analysis Laboratory (Fact Sheet)  

SciTech Connect

At the Biomass Compositional Analysis Laboratory, NREL scientists have more than 20 years of experience supporting the biomass conversion industry. They develop, refine, and validate analytical methods to determine the chemical composition of biomass samples before, during, and after conversion processing. These high-quality compositional analysis data are used to determine feedstock compositions as well as mass balances and product yields from conversion processes.

Not Available

2014-07-01T23:59:59.000Z

222

Fall 2013 Composite Data Products - Backup Power  

SciTech Connect

This report includes 28 composite data products (CDPs) produced in Fall 2013 for fuel cell backup power systems.

Kurtz, J.; Sprik, S.; Ainscough, C.; Saur, G.; Post, M.; Peters, M.

2013-12-01T23:59:59.000Z

223

Spring 2014 Composite Data Products: Backup Power  

SciTech Connect

This report includes 30 composite data products (CDPs) produced in Spring 2014 for fuel cell backup power systems.

Kurtz, J.; Sprik, S.; Saur, G.

2014-06-01T23:59:59.000Z

224

Compositional Variation Within Hybrid Nanostructures  

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

Compositional Variation Within Hybrid Nanostructures Print Compositional Variation Within Hybrid Nanostructures Print The inherently high surface area of bimetallic nanoparticles makes them especially attractive materials for heterogeneous catalysis. The ability to selectively grow these and other types of nanoparticles on a desired surface is ideal for the fabrication of higher-order nanoscale architectures. However, the growth mechanism for bimetallic nanoparticles on a surface is expected to be quite different than that for free particles in solution. The altered growth process can lead to modulations in stoichiometry, elemental homogeneity, and surface structure, all of which can profoundly affect the catalytic or magnetic properties of the bimetallic nanoparticles. Now, researchers have experimentally observed these subtle structural differences through x-ray absorption spectroscopic studies at ALS Beamline 10.3.2. The results illustrate how directed nanoparticle growth on specific surfaces can lead to hybrid nanomaterials with a structurally different bimetallic component than its unhybridized counterpart.

225

Compositional Variation Within Hybrid Nanostructures  

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

Compositional Variation Within Hybrid Nanostructures Print Compositional Variation Within Hybrid Nanostructures Print The inherently high surface area of bimetallic nanoparticles makes them especially attractive materials for heterogeneous catalysis. The ability to selectively grow these and other types of nanoparticles on a desired surface is ideal for the fabrication of higher-order nanoscale architectures. However, the growth mechanism for bimetallic nanoparticles on a surface is expected to be quite different than that for free particles in solution. The altered growth process can lead to modulations in stoichiometry, elemental homogeneity, and surface structure, all of which can profoundly affect the catalytic or magnetic properties of the bimetallic nanoparticles. Now, researchers have experimentally observed these subtle structural differences through x-ray absorption spectroscopic studies at ALS Beamline 10.3.2. The results illustrate how directed nanoparticle growth on specific surfaces can lead to hybrid nanomaterials with a structurally different bimetallic component than its unhybridized counterpart.

226

Compositional Variation Within Hybrid Nanostructures  

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

Compositional Variation Within Hybrid Nanostructures Print Compositional Variation Within Hybrid Nanostructures Print The inherently high surface area of bimetallic nanoparticles makes them especially attractive materials for heterogeneous catalysis. The ability to selectively grow these and other types of nanoparticles on a desired surface is ideal for the fabrication of higher-order nanoscale architectures. However, the growth mechanism for bimetallic nanoparticles on a surface is expected to be quite different than that for free particles in solution. The altered growth process can lead to modulations in stoichiometry, elemental homogeneity, and surface structure, all of which can profoundly affect the catalytic or magnetic properties of the bimetallic nanoparticles. Now, researchers have experimentally observed these subtle structural differences through x-ray absorption spectroscopic studies at ALS Beamline 10.3.2. The results illustrate how directed nanoparticle growth on specific surfaces can lead to hybrid nanomaterials with a structurally different bimetallic component than its unhybridized counterpart.

227

Compositional Variation Within Hybrid Nanostructures  

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

Compositional Variation Within Hybrid Nanostructures Print Compositional Variation Within Hybrid Nanostructures Print The inherently high surface area of bimetallic nanoparticles makes them especially attractive materials for heterogeneous catalysis. The ability to selectively grow these and other types of nanoparticles on a desired surface is ideal for the fabrication of higher-order nanoscale architectures. However, the growth mechanism for bimetallic nanoparticles on a surface is expected to be quite different than that for free particles in solution. The altered growth process can lead to modulations in stoichiometry, elemental homogeneity, and surface structure, all of which can profoundly affect the catalytic or magnetic properties of the bimetallic nanoparticles. Now, researchers have experimentally observed these subtle structural differences through x-ray absorption spectroscopic studies at ALS Beamline 10.3.2. The results illustrate how directed nanoparticle growth on specific surfaces can lead to hybrid nanomaterials with a structurally different bimetallic component than its unhybridized counterpart.

228

Compositional Variation Within Hybrid Nanostructures  

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

Compositional Variation Within Hybrid Nanostructures Print Compositional Variation Within Hybrid Nanostructures Print The inherently high surface area of bimetallic nanoparticles makes them especially attractive materials for heterogeneous catalysis. The ability to selectively grow these and other types of nanoparticles on a desired surface is ideal for the fabrication of higher-order nanoscale architectures. However, the growth mechanism for bimetallic nanoparticles on a surface is expected to be quite different than that for free particles in solution. The altered growth process can lead to modulations in stoichiometry, elemental homogeneity, and surface structure, all of which can profoundly affect the catalytic or magnetic properties of the bimetallic nanoparticles. Now, researchers have experimentally observed these subtle structural differences through x-ray absorption spectroscopic studies at ALS Beamline 10.3.2. The results illustrate how directed nanoparticle growth on specific surfaces can lead to hybrid nanomaterials with a structurally different bimetallic component than its unhybridized counterpart.

229

Nonlinear seismic response analysis of steel-concrete composite frames  

E-Print Network (OSTI)

of nonlinear steel- concrete composite beam ele- ment. ”Tests and analysis of composite beams with incom- pleteElementary Behaviour of Composite Steel and Concrete Struc-

Barbato, Michele

2008-01-01T23:59:59.000Z

230

Finite Duration Shocks on Discrete Laminate Composite Al/W /  

E-Print Network (OSTI)

3.1 Geometry of the Layered Composite and Loading Condi-OF FIGURES Figure 3.1: Layered Composite Geometry . . . . .composite. . . . . . . . . . . . . . . . . . . . . . . . .

Franco Navarro, Pedro

2013-01-01T23:59:59.000Z

231

Hail Ice Damage of Stringer-Stiffened Curved Composite Panels /  

E-Print Network (OSTI)

Stiffener Impact Damage. Composite Structures 2003;62:213–FTE Values of Carbon/Epoxy Composite Tape Laminate Plates [Sarh B, Kismarton MU. Composite Structures: The First 100

Le, Jacqueline Linh

2013-01-01T23:59:59.000Z

232

Fiber-Reinforced Polymer Composites: Pursuing the Promise | Department...  

Energy Savers (EERE)

Fiber-Reinforced Polymer Composites: Pursuing the Promise Fiber-Reinforced Polymer Composites: Pursuing the Promise High-strength, lightweight advanced composites will deliver a...

233

Solid composite electrolytes for lithium batteries  

DOE Patents (OSTI)

Solid composite electrolytes are provided for use in lithium batteries which exhibit moderate to high ionic conductivity at ambient temperatures and low activation energies. In one embodiment, a ceramic-ceramic composite electrolyte is provided containing lithium nitride and lithium phosphate. The ceramic-ceramic composite is also preferably annealed and exhibits an activation energy of about 0.1 eV.

Kumar, Binod (Dayton, OH); Scanlon, Jr., Lawrence G. (Fairborn, OH)

2000-01-01T23:59:59.000Z

234

PRESSURE TRANSIENT ANALYSIS FOR COMPOSITE SYSTEMS  

E-Print Network (OSTI)

SGP-TR-117 PRESSURE TRANSIENT ANALYSIS FOR COMPOSITE SYSTEMS Ani1 Kumar Ambastha October 1988 my graduate studies. #12;f #12;ABSTRACT A composite reservoir model is used to analyze well. A composite reservoir is made up of two or more regions. Each region has its own rock and fluid properties

Stanford University

235

Adaptive Composite Map Projections Bernhard Jenny  

E-Print Network (OSTI)

Adaptive Composite Map Projections Bernhard Jenny Abstract--All major web mapping services use.The proposed composite map projection combines several projections that are recommended in cartographic.The composite projection adapts the maps geometry to scale, to the maps height-to-width ratio

Jenny, Bernhard

236

COMPOSITE ARCHITECTURES FOR SUB-600 DEGREE CELSIUS  

E-Print Network (OSTI)

COMPOSITE ARCHITECTURES FOR SUB-600 DEGREE CELSIUS FUEL CELLS Prepared For: California Energy (EISG) PROGRAM FEASIBILITY ANALYSIS REPORT (FAR) COMPOSITE ARCHITECTURES FOR SUB-600o C FUEL CELLS EISG 1 Composite Architectures For Sub-600 O C Fuel Cells EISG Grant # 99-35 Awardee: University

237

National Aeronautics and Space Administration Composite Cryotank  

E-Print Network (OSTI)

National Aeronautics and Space Administration Composite Cryotank Project Delivers Major Milestone A 2.4-meter-diameter propellant tank made of composite materials arrived on Nov. 20, 2012 at NASA's Marshall Space Flight Center in Huntsville, Ala., where engineers are preparing it for testing. Composite

Christian, Eric

238

Wood Laminated Composite Louisiana Forest Product Lab  

E-Print Network (OSTI)

Wood Laminated Composite Poles Cheng Piao Louisiana Forest Product Lab School of Renewable Natural, in accordance with CSA O15, ANSI 05 and many other international standards #12;Wood Laminated Composite Poles y, v z, w R r x, u #12;Why Wood Composite Poles · Sufficient strength · More cost-effective · Light

239

Composite scintillators for detection of ionizing radiation  

DOE Patents (OSTI)

Applicant's present invention is a composite scintillator having enhanced transparency for detecting ionizing radiation comprising a material having optical transparency wherein said material comprises nano-sized objects having a size in at least one dimension that is less than the wavelength of light emitted by the composite scintillator wherein the composite scintillator is designed to have selected properties suitable for a particular application.

Dai, Sheng (Knoxville, TN) [Knoxville, TN; Stephan, Andrew Curtis (Knoxville, TN) [Knoxville, TN; Brown, Suree S. (Knoxville, TN) [Knoxville, TN; Wallace, Steven A. (Knoxville, TN) [Knoxville, TN; Rondinone, Adam J [Knoxville, TN

2010-12-28T23:59:59.000Z

240

Composite Self-concordant Minimization Volkan Cevher  

E-Print Network (OSTI)

Composite Self-concordant Minimization Volkan Cevher Laboratory for Information and InferenceTran Dinh Anastasios Kyrillidis Yen-Huan Li Paris 6 Dec 11, 2013 #12;Composite minimization Motivation-the-grid array processing g convex and possibly nonsmooth (P) ·a ·a f convex and smooth #12;Composite

Combettes, Patrick Louis

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


241

http://jtc.sagepub.com Composite Materials  

E-Print Network (OSTI)

http://jtc.sagepub.com Composite Materials Journal of Thermoplastic DOI: 10.1177/0892705708089473 2008; 21; 209Journal of Thermoplastic Composite Materials Qinglin Wu Sun-Young Lee, In-Aeh Kang, Geum-Hyun Doh, Ho-Gyu Yoon, Byung-Dae Park and Acid Composites: Effect of Filler Content and Coupling Treatment

242

Carbon nanotube-polymer composite actuators  

DOE Patents (OSTI)

The present invention discloses a carbon nanotube (SWNT)-polymer composite actuator and method to make such actuator. A series of uniform composites was prepared by dispersing purified single wall nanotubes with varying weight percents into a polymer matrix, followed by solution casting. The resulting nanotube-polymer composite was then successfully used to form a nanotube polymer actuator.

Gennett, Thomas (Denver, CO); Raffaelle, Ryne P. (Honeoye Falls, NY); Landi, Brian J. (Rochester, NY); Heben, Michael J. (Denver, CO)

2008-04-22T23:59:59.000Z

243

HIPed carbon fiber reinforced silicon nitride composites  

SciTech Connect

Carbon fiber/Si3N4 composites were fabricated using slip infiltration of fiber bundles subsequently stacked in a plaster mold, dried, glass encapsulated, and HIPed to form unidirectional composite test bars. Neither chemical reactions between fiber and matrix nor thermal mismatch cracks in the matrix were observed. The bend fracture behavior of the composites was nonbrittle with extensive fiber pullout. 14 references.

Lundberg, R.; Pompe, R.; Carlsson, R.

1988-08-01T23:59:59.000Z

244

Optimized dynamic semantic composition of services  

Science Journals Connector (OSTI)

This paper proposes a design for the optimized dynamic (re)composition of services that supports various user requests and accounts for changes in user's context. The composition mechanism relies on semantic descriptions of services' functionality to ... Keywords: context-awareness, domain ontology, semantic similarity, service composition, services

Sorin M. Iacob; Joăo Paulo A. Almeida; Maria E. Iacob

2008-03-01T23:59:59.000Z

245

NONLOCAL COMPUTATIONAL METHODS APPLIED TO COMPOSITE STRUCTURES  

E-Print Network (OSTI)

to model the degradation of organic or ceramic matrix composites structures (OMC or CMC) even under simple description of heterogeneous materia ls like organic or ceramic matrix composites. New sophisticatedNONLOCAL COMPUTATIONAL METHODS APPLIED TO COMPOSITE STRUCTURES N. GERMAIN1, F. FEYEL1 and J. BESSON

Boyer, Edmond

246

Desensitization and recovery of metastable intermolecular composites  

DOE Patents (OSTI)

A method to substantially desensitize a metastable intermolecular composite material to electrostatic discharge and friction comprising mixing the composite material with an organic diluent and removing enough organic diluent from the mixture to form a mixture with a substantially putty-like consistency, as well as a concomitant method of recovering the metastable intermolecular composite material.

Busse, James R. (South Fork, CO); Dye, Robert C. (Los Alamos, NM); Foley, Timothy J. (Los Alamos, NM); Higa, Kelvin T. (Ridgecrest, CA); Jorgensen, Betty S. (Jemez Springs, NM); Sanders, Victor E. (White Rock, NM); Son, Steven F. (Los Alamos, NM)

2010-09-07T23:59:59.000Z

247

Compositional Variation Within Hybrid Nanostructures  

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

Compositional Variation Within Compositional Variation Within Hybrid Nanostructures Compositional Variation Within Hybrid Nanostructures Print Wednesday, 29 September 2010 00:00 The inherently high surface area of bimetallic nanoparticles makes them especially attractive materials for heterogeneous catalysis. The ability to selectively grow these and other types of nanoparticles on a desired surface is ideal for the fabrication of higher-order nanoscale architectures. However, the growth mechanism for bimetallic nanoparticles on a surface is expected to be quite different than that for free particles in solution. The altered growth process can lead to modulations in stoichiometry, elemental homogeneity, and surface structure, all of which can profoundly affect the catalytic or magnetic properties of the bimetallic nanoparticles. Now, researchers have experimentally observed these subtle structural differences through x-ray absorption spectroscopic studies at ALS Beamline 10.3.2. The results illustrate how directed nanoparticle growth on specific surfaces can lead to hybrid nanomaterials with a structurally different bimetallic component than its unhybridized counterpart.

248

Composite materials for fusion applications  

SciTech Connect

Ceramic matrix composites, CMCs, are being considered for advanced first-wall and blanket structural applications because of their high-temperature properties, low neutron activation, low density and low coefficient of expansion coupled with good thermal conductivity and corrosion behavior. This paper presents a review and analysis of the hermetic, thermal conductivity, corrosion, crack growth and radiation damage properties of CMCs. It was concluded that the leak rates of a gaseous coolant into the plasma chamber or tritium out of the blanket could exceed design criteria if matrix microcracking causes existing porosity to become interconnected. Thermal conductivities of unirradiated SiC/SiC and C/SiC materials are about 1/2 to 2/3 that of Type 316 SS whereas the thermal conductivity for C/C composites is seven times larger. The thermal stress figure-of-merit value for CMCs exceeds that of Type 316 SS for a single thermal cycle. SiC/SiC composites are very resistant to corrosion and are expected to be compatible with He or Li coolants if the O{sub 2} concentrations are maintained at the appropriate levels. CMCs exhibit subcritical crack growth at elevated temperatures and the crack velocity is a function of the corrosion conditions. The radiation stability of CMCs will depend on the stability of the fiber, microcracking of the matrix, and the effects of gaseous transmutation products on properties. 23 refs., 14 figs., 1 tab.

Jones, R.H.; Henager, C.H. Jr.; Hollenberg, G.W.

1991-10-01T23:59:59.000Z

249

Hydrogen storage composition and method  

DOE Patents (OSTI)

A hydrogen storage composition based on a metal hydride dispersed in an aerogel prepared by a sol-gel process. The starting material for the aerogel is an organometallic compound, including the alkoxysilanes, organometals of the form M(OR)x and MOxRy, where R is an alkyl group of the form C.sub.n H.sub.2n+1, M is an oxide-forming metal, n, x, and y are integers, and y is two less than the valence of M. A sol is prepared by combining the starting material, alcohol, water, and an acid. The sol is conditioned to the proper viscosity and a hydride in the form of a fine powder is added. The mixture is polymerized and dried under supercritical conditions. The final product is a composition having a hydride uniformly dispersed throughout an inert, stable and highly porous matrix. It is capable of absorbing up to 30 moles of hydrogen per kilogram at room temperature and pressure, rapidly and reversibly. Hydrogen absorbed by the composition can be readily be recovered by heat or evacuation.

Heung, Leung K (Aiken, SC); Wicks, George G. (Aiken, SC)

2003-01-01T23:59:59.000Z

250

B. Hammer, Compositionality in Neural Systems 1 Compositionality in Neural Systems  

E-Print Network (OSTI)

B. Hammer, Compositionality in Neural Systems 1 Compositionality in Neural Systems Barbara Hammer, Compositionality in Neural Systems 2 Introduction In real life, people deal with composite structures: Written, sentences, articles, roadmaps, and #12;nally the `Handbook of Brain Theory'. Spoken language consists of raw

Hammer, Barbara

251

Method of making carbon-carbon composites  

DOE Patents (OSTI)

A process for making 2D and 3D carbon-carbon composites having a combined high crystallinity, high strength, high modulus and high thermal and electrical conductivity. High-modulus/high-strength mesophase derived carbon fibers are woven into a suitable cloth. Layers of this easily graphitizible woven cloth are infiltrated with carbon material to form green composites. The carbonized composite is then impregnated several times with pitch by covering the composite with hot pitch under pressure. The composites are given a heat treatment between each impregnant step to crack up the infiltrated carbon and allow additional pitch to enter the microstructure during the next impregnation cycle. The impregnated composites are then given a final heat treatment in the range 2500.degree. to 3100.degree. C. to fully graphitize the fibers and the matrix carbon. The composites are then infiltrated with pyrolytic carbon by chemical vapor deposition in the range 1000.degree. C. to 1300.degree. C. at a reduced. pressure.

Engle, Glen B. (16716 Martincoit Rd., Poway, CA 92064)

1993-01-01T23:59:59.000Z

252

XG Sciences, ORNL partner on titanium-graphene composite materials...  

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

XG Sciences, ORNL partner on titaniumgraphene composite materials January 01, 2013 Titaniumgraphene composite specimens prepared for flash thermal diffusivity measurement....

253

Zirconium hydride containing explosive composition  

DOE Patents (OSTI)

An improved explosive composition is disclosed and comprises a major portion of an explosive having a detonation velocity between about 1500 and 10,000 meters per second and a minor amount of a donor additive comprising a non-explosive compound or mixture of non-explosive compounds which when subjected to an energy fluence of 1000 calories/cm.sup.2 or less is capable of releasing free radicals each having a molecular weight between 1 and 120. Exemplary donor additives are dibasic acids, polyamines and metal hydrides.

Walker, Franklin E. (18 Shadow Oak Rd., Danville, CA 94526); Wasley, Richard J. (4290 Colgate Way, Livermore, CA 94550)

1981-01-01T23:59:59.000Z

254

Donor free radical explosive composition  

DOE Patents (OSTI)

An improved explosive composition is disclosed and comprises a major portion of an explosive having a detonation velocity between about 1500 and 10,000 meters per second and a minor amount of a donor additive comprising an organic compound or mixture of organic compounds capable of releasing low molecular weight free radicals or ions under mechanical or electrical shock conditions and which is not an explosive, or an inorganic compound or mixture of inorganic compounds capable of releasing low molecular weight free radicals or ions under mechanical or electrical shock conditions and selected from ammonium or alkali metal persulfates.

Walker, Franklin E. [15 Way Points Rd., Danville, CA 94526; Wasley, Richard J. [4290 Colgate Way, Livermore, CA 94550

1980-04-01T23:59:59.000Z

255

composition of putative oceans on  

E-Print Network (OSTI)

#12;Results: Oceanic water composition · Oceanic water is a NaCl-CaCl2 solution · Large Cl mass · Cl in a "soda ocean" Temperature, o C 100 200 300 400 500 Concentration,mole/kgH2O 0.01 0.1 1 Cl- CaCl2 CaCl+ Na calcite · Quartz · Na-K feldspars · Anhydrite · Pyrite · Hematite/magnetite · Evaporites: NaCl+CaCl2 350o

Treiman, Allan H.

256

Horizon thermodynamics and composite metrics  

E-Print Network (OSTI)

We examine the conditions under which the thermodynamic behaviour of gravity can be explained within an emergent gravity scenario, where the metric is defined as a composite operator. We show that due to the availability of a boundary of a boundary principle for the quantum effective action, Clausius-like relations can always be constructed. Hence, any true explanation of the thermodynamic nature of the metric tensor has to be referred to an equilibration process, associated to the presence of an H-theorem, possibly driven by decoherence induced by the pregeometric degrees of freedom, and their entanglement with the geometric ones.

Lorenzo Sindoni

2012-11-12T23:59:59.000Z

257

Composite Web Services Kung-Kiu Lau and Cuong Tran  

E-Print Network (OSTI)

Composite Web Services Kung-Kiu Lau and Cuong Tran Keywords. Web service, composite service, service composition, component model. Abstract. Currently, composition of web services is done services involved. It is therefore a composition of individual operations, rather than a composition

Lau, Kung-Kiu

258

Nanophosphor composite scintillators comprising a polymer matrix  

DOE Patents (OSTI)

An improved nanophosphor composite comprises surface modified nanophosphor particles in a solid matrix. The nanophosphor particle surface is modified with an organic ligand, or by covalently bonding a polymeric or polymeric precursor material. The surface modified nanophosphor particle is essentially charge neutral, thereby preventing agglomeration of the nanophosphor particles during formation of the composite material. The improved nanophosphor composite may be used in any conventional scintillator application, including in a radiation detector.

Muenchausen, Ross Edward (Los Alamos, NM); Mckigney, Edward Allen (Los Alamos, NM); Gilbertson, Robert David (Los Alamos, NM)

2010-11-16T23:59:59.000Z

259

Diamond-silicon carbide composite and method  

DOE Patents (OSTI)

Uniformly dense, diamond-silicon carbide composites having high hardness, high fracture toughness, and high thermal stability are prepared by consolidating a powder mixture of diamond and amorphous silicon. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPam.sup.1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness.

Zhao, Yusheng (Los Alamos, NM)

2011-06-14T23:59:59.000Z

260

A Unified Approach for Minimizing Composite Norms  

E-Print Network (OSTI)

May 25, 2010 ... Abstract: We propose a first-order augmented Lagrangian algorithm (FALC) to solve the composite norm minimization problem min ...

Necdet Serhat Aybat

2010-05-25T23:59:59.000Z

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


261

A PROXIMAL METHOD FOR COMPOSITE MINIMIZATION? 1 ...  

E-Print Network (OSTI)

how a wide variety of examples can be posed as composite optimization problems of the form (1.1). We include problems from approximation, nonlinear ...

2014-10-19T23:59:59.000Z

262

Composite membranes and methods for making same  

DOE Patents (OSTI)

Composite membranes that are adapted for separation, purification, filtration, analysis, reaction and sensing. The composite membranes can include a porous support structure having elongate pore channels extending through the support structure. The composite membrane also includes an active layer comprising an active layer material, where the active layer material is completely disposed within the pore channels between the surfaces of the support structure. The active layer is intimately integrated within the support structure, thus enabling great robustness, reliability, resistance to mechanical stress and thermal cycling, and high selectivity. Methods for the fabrication of composite membranes are also provided.

Routkevitch, Dmitri; Polyakov, Oleg G

2012-07-03T23:59:59.000Z

263

Optimization Online - Gradient Sliding for Composite Optimization  

E-Print Network (OSTI)

Abstract: We consider in this paper a class of composite optimization problems whose objective function is given by the summation of a general smooth and ...

Guanghui Lan

264

Optimization Online - Splitting methods for nonconvex composite ...  

E-Print Network (OSTI)

Jul 2, 2014 ... Splitting methods for nonconvex composite optimization. Guoyin Li (g.li ***at*** unsw.edu.au) Ting Kei Pong (tkpong ***at*** cs.ubc.ca).

Guoyin Li

2014-07-02T23:59:59.000Z

265

Metallic Bipolar Plates with Composite Coatings  

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

Bipolar Plates with Composite Coatings Jennifer Mawdsley Argonne National Laboratory Fuel Cell Projects Kickoff Meeting Washington DC October 1, 2009 2 Metallic Bipolar Plates with...

266

Compositional changes in heavy oil steamflood simulators.  

E-Print Network (OSTI)

??The numerical simulation of heavy oil steamfloods has generally been conducted assuming that the oil is non-volatile. Reservoir simulation has traditionally ignored compositional effect s… (more)

Lolley, Christopher Scott

2012-01-01T23:59:59.000Z

267

Biomass Compositional Analysis Laboratory (Fact Sheet), National...  

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

At the Biomass Compositional Analysis Laboratory, NREL scientists have more than 20 years of experience supporting the biomass conversion industry. They develop, refine, and...

268

ACC115 High Volume Processing of Composites  

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

composite processing technologies Direct support of the Materials, Joining, and Carbon Fiber SMC Working Groups Direct collaboration Focal Project 4 via Material and...

269

Novel Composite Cathode Structures | Department of Energy  

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

and Vehicle Technologies Program Annual Merit Review and Peer Evaluation es115johnson2011p.pdf More Documents & Publications Novel Composite Cathode Structures Vehicle...

270

Novel Composite Cathode Structures | Department of Energy  

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

and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting es115johnson2012o.pdf More Documents & Publications Novel Composite Cathode Structures...

271

Activated Aluminum Hydride Hydrogen Storage Compositions - Energy...  

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

Hydrogen and Fuel Cell Find More Like This Return to Search Activated Aluminum Hydride Hydrogen Storage Compositions Brookhaven National Laboratory Contact BNL About This...

272

Fiber Reinforced Polymer Composite Manufacturing Workshop: Summary...  

Energy Savers (EERE)

for carbon fiber, including bio-based materials or natural gas; lower energy conversion of white fiber to carbon fiber; and composite manufacturing. Dr. Johnson then...

273

Multivariate Calibration Models for Sorghum Composition using...  

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

M.A.; Agblevor, F.; Collins, M.; Johnson, D.K. "Compositional Analysis of Biomass Feedstocks by Near Infrared Reflectance Spectroscopy." Biomass and Bioenergy (11:5), 1996;...

274

Palladium/kieselguhr composition and method  

DOE Patents (OSTI)

A hydrogen-absorbing composition and method for making such a composition are described. The composition comprises a metal hydride, preferably palladium, deposited onto a porous substrate such as kieselguhr, for use in hydrogen-absorbing processes. The composition is made by immersing a substrate in a concentrated solution containing palladium, such as tetra-amine palladium nitrate. Palladium from the solution is deposited onto the porous substrate, which is preferably in the form of kieselguhr particles. The substrate is then removed from the solution, calcined, and heat treated. This process is repeated until the desired amount of palladium has been deposited onto the substrate.

Mosley, W.C. Jr.

1993-09-28T23:59:59.000Z

275

Composite Electrolyte to Stabilize Metallic Lithium Anodes  

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

- Develop composites of electrolyte materials with requisite electrochemical and mechanical properties - Fabricate thin membranes to provide good power performance and long...

276

Natural Fiber Composites: Retting, Preform Manufacture & Molding...  

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

Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. lm12smith.pdf More Documents & Publications Natural Fiber Composites: Retting, Preform...

277

Natural Fiber Composites: Retting, Preform Manufacture & Molding...  

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

"Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland. merit08smith3.pdf More Documents & Publications Natural Fiber Composites: Retting, Preform...

278

Clean Energy Manufacturing Innovation Institute for Composites...  

Office of Environmental Management (EM)

composites. The Institute will target continuous or discontinuous, primarily carbon and glass fiber systems, with thermoset or thermoplastic resin materials. These types of...

279

Fullerene-Nafion Composite Recast Membranes  

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

Presentation on Fullerene-Nafion Composite Recast Membranes to the High Temperature Membrane Working Group Meeting held in Arlington, Virginia, May 26,2005.

280

Composite oxygen ion transport element  

SciTech Connect

A composite oxygen ion transport element that has a layered structure formed by a dense layer to transport oxygen ions and electrons and a porous support layer to provide mechanical support. The dense layer can be formed of a mixture of a mixed conductor, an ionic conductor, and a metal. The porous support layer can be fabricated from an oxide dispersion strengthened metal, a metal-reinforced intermetallic alloy, a boron-doped Mo.sub.5Si.sub.3-based intermetallic alloy or combinations thereof. The support layer can be provided with a network of non-interconnected pores and each of said pores communicates between opposite surfaces of said support layer. Such a support layer can be advantageously employed to reduce diffusion resistance in any type of element, including those using a different material makeup than that outlined above.

Chen, Jack C. (Getzville, NY); Besecker, Charles J. (Batavia, IL); Chen, Hancun (Williamsville, NY); Robinson, Earil T. (Mentor, OH)

2007-06-12T23:59:59.000Z

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


281

Transparent conductive nano-composites  

DOE Patents (OSTI)

The present invention, in one embodiment, provides a method of forming an organic electric device that includes providing a plurality of carbon nanostructures; and dispersing the plurality of carbon nanostructures in a polymeric matrix to provide a polymeric composite, wherein when the plurality of carbon nanostructures are present at a first concentration an interface of the plurality of carbon nanostructures and the polymeric matrix is characterized by charge transport when an external energy is applied, and when the plurality of carbon nanostructures are present at a second concentration the interface of the plurality of carbon nanostructures and the polymeric matrix are characterized by exciton dissociation when an external energy is applied, wherein the first concentration is less than the second concentration.

Geohegan, David Bruce (Knoxville, TN); Ivanov, Ilia N. (Knoxville, TN); Puretzky, Alexander A. (Knoxville, TN); Jesse, Stephen (Knoxville, TN); Hu, Bin (Knoxville, TN); Garrett, Matthew (Knoxville, TN); Zhao, Bin (Easley, SC)

2011-04-12T23:59:59.000Z

282

Bayesian inference from composite likelihoods Mathieu Ribatet 1 / 29 Bayesian inference from composite likelihoods, with an  

E-Print Network (OSTI)

Bayesian inference from composite likelihoods Mathieu Ribatet ­ 1 / 29 Bayesian inference from composite likelihoods, with an application to spatial extremes D. Cooley, A. Davison, M. Ribatet Department composite likelihoods Mathieu Ribatet ­ 2 / 29 MOTIVATIONS: The likelihood is central to both frequentist

Ribatet, Mathieu

283

Utilization of Agricultural WasteUtilization of Agricultural Waste for Composite Panelsfor Composite Panels  

E-Print Network (OSTI)

Utilization of Agricultural WasteUtilization of Agricultural Waste for Composite Panelsfor Composite Panels Chung Y. HseChung Y. Hse Principal Wood ScientistPrincipal Wood Scientist USDA Forest State UniversityLouisiana State University 66thth Pacific Rim BioPacific Rim Bio--Based Composites

284

Cationic electrodepositable coating composition comprising lignin  

DOE Patents (OSTI)

A cationic electrodepositable coating composition is disclosed. The present invention in directed to a cationic electrodepositable coating composition comprising a lignin-containing cationic salt resin, that comprises (A) the reaction product of: lignin, an amine, and a carbonyl compound; (B) the reaction product of lignin, epichlorohydrin, and an amine; or (C) combinations thereof.

Fenn, David; Bowman, Mark P; Zawacky, Steven R; Van Buskirk, Ellor J; Kamarchik, Peter

2013-07-30T23:59:59.000Z

285

Flexible hydrogel-based functional composite materials  

DOE Patents (OSTI)

A composite having a flexible hydrogel polymer formed by mixing an organic phase with an inorganic composition, the organic phase selected from the group consisting of a hydrogel monomer, a crosslinker, a radical initiator, and/or a solvent. A polymerization mixture is formed and polymerized into a desired shape and size.

2013-10-08T23:59:59.000Z

286

Composite materials and method of making  

DOE Patents (OSTI)

A method for forming improved composite materials using a thermosetting polyester urethane hybrid resin, a closed cavity mold having an internal heat transfer mechanism used in this method, and the composite materials formed by this method having a hybrid of a carbon fiber layer and a fiberglass layer.

Simmons, Kevin L [Kennewick, WA; Wood, Geoffrey M [North Saanich, CA

2011-05-17T23:59:59.000Z

287

Method for regulation of plant lignin composition  

DOE Patents (OSTI)

A method is disclosed for the regulation of lignin composition in plant tissue. Plants are transformed with a gene encoding an active F5H gene. The expression of the F5H gene results in increased levels of syringyl monomer providing a lignin composition more easily degraded with chemicals and enzymes.

Chapple, Clint (West Lafayette, IN)

1999-01-01T23:59:59.000Z

288

Passive machine augmented composite for multifunctional properties  

E-Print Network (OSTI)

@100Hz Nylon 6@40Hz PMMA@83Hz Figure 2.3. Stiffness-loss map of observed behavior of some common materials [18]. 2.4. Damping in Composite Materials This section reviews the basic composite damping mechanisms as well as several analytical...

Kim, Jong Hyun

2005-11-01T23:59:59.000Z

289

Composite ultrasound imaging apparatus and method  

DOE Patents (OSTI)

An imaging apparatus and method for use in presenting composite two dimensional and three dimensional images from individual ultrasonic frames. A cross-sectional reconstruction is applied by using digital ultrasound frames, transducer orientation and a known center. Motion compensation, rank value filtering, noise suppression and tissue classification are utilized to optimize the composite image. 37 figs.

Morimoto, A.K.; Bow, W.J. Jr.; Strong, D.S.; Dickey, F.M.

1998-09-15T23:59:59.000Z

290

Composite ultrasound imaging apparatus and method  

DOE Patents (OSTI)

An imaging apparatus and method for use in presenting composite two dimensional and three dimensional images from individual ultrasonic frames. A cross-sectional reconstruction is applied by using digital ultrasound frames, transducer orientation and a known center. Motion compensation, rank value filtering, noise suppression and tissue classification are utilized to optimize the composite image.

Morimoto, Alan K. (Albuquerque, NM); Bow, Jr., Wallace J. (Albuquerque, NM); Strong, David Scott (Albuquerque, NM); Dickey, Fred M. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

291

Solar composition from the Genesis Discovery Mission  

E-Print Network (OSTI)

Solar composition from the Genesis Discovery Mission D. S. Burnett1 and Genesis Science Team2: the isoto- pic compositions of O, N, and noble gases differ in the Sun from other inner solar system objects in the noble gas data from solar wind implanted in lunar soils. (ii) The most advanced analytical instruments

292

Peter H. Bridge Musical Composition Collection  

E-Print Network (OSTI)

Peter H. Bridge Musical Composition Collection Biographical Note Peter Hulin Bridge was born and manuscripts is archived in the Library of Congress' Performing Arts Division. Peter H. Bridge died consists of copies of musical compositions by Peter H. Bridge, 1951- 2010). The original manuscripts

Suzuki, Masatsugu

293

Method of making carbon-carbon composites  

DOE Patents (OSTI)

A process for making a carbon-carbon composite having a combination of high crystallinity, high strength, high modulus and high thermal and electrical conductivity. High-modulus/high-strength mesophase derived carbon fibers are woven into a suitable cloth. Layers of this easily graphitizable woven cloth are covered with petroleum or coal tar pitch and pressed at a temperature a few degrees above the softening point of the pitch to form a green laminated composite. The green composite is restrained in a suitable fixture and heated slowly to carbonize the pitch binder. The carbonized composite is then impregnated several times with pitch by covering the composite with hot pitch under pressure. The composites are given a heat treatment between each impregnation step to crack up the infiltrated carbon and allow additional pitch to enter the microstructure during the next impregnation cycle. The impregnated composites are then given a final heat treatment in the range 2500.degree. to 3000.degree. C. to fully graphitize the fibers and the matrix carbon. The composites are then infiltrated with pyrolytic carbon by chemical vapor deposition in the range 1000.degree. to 1300.degree. C. at a reduced pressure for approximately one hundred and fifty (150) hours.

Engle, Glen B. (16716 Martincoit Rd., Poway, CA 92064)

1991-01-01T23:59:59.000Z

294

FRACTURE TOUGHNESS OF WOOD AND WOOD COMPOSITES  

E-Print Network (OSTI)

FRACTURE TOUGHNESS OF WOOD AND WOOD COMPOSITES DURING CRACK PROPAGATION Noah Matsumoto Structural, USA * Corresponding author: John.Nairn@oregonstate.edu SWST member #12;Fracture Toughness of Wood and Wood Composites During Crack Propagation ABSTRACT The mode I fracture toughness as a function of crack

Nairn, John A.

295

Carbon nanotube composites P. J. F. Harris*  

E-Print Network (OSTI)

Carbon nanotube composites P. J. F. Harris* Carbon nanotubes are molecular-scale tubes of graphitic. There is currently great interest in exploiting these properties by incorporating carbon nanotubes into some form/ceramic and nanotube/metal composites. This review outlines the properties of carbon nanotubes and describes

Harris, Peter J F

296

Composition for absorbing hydrogen from gas mixtures  

DOE Patents (OSTI)

A hydrogen storage composition is provided which defines a physical sol-gel matrix having an average pore size of less than 3.5 angstroms which effectively excludes gaseous metal hydride poisons while permitting hydrogen gas to enter. The composition is useful for separating hydrogen gas from diverse gas streams which may have contaminants that would otherwise render the hydrogen absorbing material inactive.

Heung, Leung K. (Aiken, SC); Wicks, George G. (Aiken, SC); Lee, Myung W. (Aiken, SC)

1999-01-01T23:59:59.000Z

297

A Generalized Vlasov Theory for Composite Beams  

E-Print Network (OSTI)

A Generalized Vlasov Theory for Composite Beams Wenbin Yu, Department of Mechanical and Aerospace-0150 Abstract A generalized Vlasov theory for composite beams with arbitrary geometric and material sectional properties is developed based on the variational asymptotic beam sectional analysis. Instead of invoking ad

Yu, Wenbin

298

SPECIES COMPOSITION OF INDUSTRIAL TRAWL FISH LANDINGS  

E-Print Network (OSTI)

346; SPECIES COMPOSITION OF INDUSTRIAL TRAWL FISH LANDINGS IN NEW ENGLAND, 1958 SPECIAL SCIENTIFIC REPORT-FISHERIES Na 346 #12;#12;United States Department of the Interior, Fred A. Seaton, Secretary FishKernan, Director SPECIES COMPOSITION OF INDUSTRIAL TRAWL-FISH LANDINGS IN NEW ENGLAND, 1958 by Robert L. Edwards

299

Electromagnetic Composites at the Compton Scale  

E-Print Network (OSTI)

A new class of electromagnetic composite particles is proposed. The composites are very small (the Compton scale), potentially long-lived, would have unique interactions with atomic and nuclear systems, and, if they exist, could explain a number of otherwise anomalous and conflicting observations in diverse research areas.

Frederick J. Mayer; John R. Reitz

2011-09-10T23:59:59.000Z

300

Compositional threshold for Nuclear Waste Glass Durability  

SciTech Connect

Within the composition space of glasses, a distinct threshold appears to exist that separates "good" glasses, i.e., those which are sufficiently durable, from "bad" glasses of a low durability. The objective of our research is to clarify the origin of this threshold by exploring the relationship between glass composition, glass structure and chemical durability around the threshold region.

Kruger, Albert A. [Pacific Northwest National Lab., Richland, WA (United States); Farooqi, Rahmatullah [Pohang Univ. of Science and Technology, (Korea, Republic of); Hrma, Pavel R. [Pacific Northwest National Lab., Richland, WA (United States), Pohang Univ. of Science and Technology, (Korea, Republic of)

2013-04-24T23:59:59.000Z

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


301

Combustion synthesis of boride and other composites  

DOE Patents (OSTI)

A self-sustaining combustion synthesis process for producing hard, tough, lightweight B.sub.4 C/TiB.sub.2 composites is based on the thermodynamic dependence of adiabatic temperature and product composition on the stoichiometry of the B.sub.4 C and TiB.sub.2 reactants. For lightweight products the composition must be relatively rich in the B.sub.4 C component. B.sub.4 C-rich composites are obtained by varying the initial temperature of the reactants. The product is hard, porous material whose toughness can be enhanced by filling the pores with aluminum or other metal phases using a liquid metal infiltration process. The process can be extended to the formation of other composites having a low exothermic component.

Halverson, Danny C. (Modesto, CA); Lum, Beverly Y. (Livermore, CA); Munir, Zuhair A. (Davis, CA)

1989-01-01T23:59:59.000Z

302

Combustion synthesis of boride and other composites  

DOE Patents (OSTI)

A self-sustaining combustion synthesis process for producing hard, tough, lightweight B/sub 4/C/TiB/sub 2/ composites is described. It is based on the thermodynamic dependence of adiabatic temperature and product composition on the stoichiometry of the B/sub 4/C and TiB/sub 2/ reactants. For lightweight products the composition must be relatively rich in the B/sub 4/C component. B/sub 4/C-rich composites are obtained by varying the initial temperature of the reactants. The product is hard, porous material whose toughness can be enhanced by filling the pores with aluminum or other metal phases using a liquid metal infiltration process. The process can be extended to the formation of other composites having a low exothermic component. 9 figs., 4 tabs.

Halverson, D.C.; Lum, B.Y.; Munir, Z.A.

1988-07-28T23:59:59.000Z

303

The composition of Permian seawater  

SciTech Connect

Forty-nine brine inclusions in marine halite from the Ochoan Salado Formation in the Delaware Basin and fifteen inclusions in halite from the Leonardian Wellington Formation in the Kansas Basin were extracted, and their chemical compositions were determined. The brines are of the Na-K-Mg-Cl-SO{sub 4} type; their compositions resemble those of evaporated modern seawater. The values of (m{sub Cl{sup {minus}}} - m{sub Na{sup +}})/m{sub Br{sup {minus}}} and (m{sub Mg{sup 2+}} + ,{sub Ca{sup 2+}} {minus} m{sub SO{sub 4}{sup 2{minus}}} {minus} {1/2}m{sub HCO{sub 3}{sup {minus}}})/m{sub Br{sup {minus}}} of the inclusion brine from the two formations are equal to or slightly higher than those of modern seawater. The original m{sub Na{sup +}}/m{sub Br{sup {minus}}} and m{sub Cl{sup {minus}}}/m{sub Br{sup {minus}}} ratios of the inclusion brines were probably equal to or slightly larger than those of modern seawater. The values of m{sub Mg{sup 2+}}/m{sub Br{sup {minus}}} of the inclusion brines from the Salado Formation are very close to that of modern seawater; the ratios of inclusion brines from the Wellington Formation are very close to that of modern seawater; the ratios of inclusion brines from the Wellington Formation are slightly lower, probably due to the formation of dolomite/magnesite. The m{sub Mg{sup 2+}}/m{sub Br{sup {minus}}} ratio in the initial seawater was probably close to the parent seawater of the Salado brines. The values of (m{sub SO{sub 4}{sup 2{minus}}} {minus} m{sub Ca{sup 2+}} + {1/2}m{sub HCO{sub 3}{sup {minus}}})/m{sub Br{sup {minus}}} of the inclusion brines appear to be reduced by the formation of dolomite/magnesite, and the value of this ratio in Permian seawater was probably similar to that of modern seawater. The m{sub K{sup +}}/m{sub Br{sup -}} ratios of the inclusion brines are variable, but the original ratios are probably close to or slightly larger than that of modern seawater.

Horita, J.; Friedman, T.J.; Lazar, B.; Holland, H.D. (Harvard Univ., Cambridge, MA (USA))

1991-02-01T23:59:59.000Z

304

ENG 4793: Composite Materials and Processes 1 Injection Molding  

E-Print Network (OSTI)

1 ENG 4793: Composite Materials and Processes 1 Injection Molding ver 1 ENG 4793: Composite · Ejection force · Design rules ENG 4793: Composite Materials and Processes 3 Equipment Clamp Mold Hopper Barrel ENG 4793: Composite Materials and Processes 4 Equipment ENG 4793: Composite Materials

Colton, Jonathan S.

305

ENG 4793: Composite Materials and Processes 1 Compression Molding  

E-Print Network (OSTI)

1 ENG 4793: Composite Materials and Processes 1 Compression Molding ver 2 ENG 4793: Composite Materials and Processes 2 ENG 4793: Composite Materials and Processes 3 ENG 4793: Composite Materials and Processes 4 Schematic of a Compression Molding Press ENG 4793: Composite Materials and Processes 5 Matched

Colton, Jonathan S.

306

Continious production of exfoliated graphite composite compositions and flow field plates  

DOE Patents (OSTI)

A process of continuously producing a more isotropic, electrically conductive composite composition is provided. The process comprises: (a) continuously supplying a compressible mixture comprising exfoliated graphite worms and a binder or matrix material, wherein the binder or matrix material is in an amount of between 3% and 60% by weight based on the total weight of the mixture; (b) continuously compressing the compressible mixture at a pressure within the range of from about 5 psi or 0.035 MPa to about 50,000 psi or 350 MPa in at least a first direction into a cohered graphite composite compact; and (c) continuously compressing the composite compact in a second direction, different from the first direction, to form the composite composition in a sheet or plate form. The process leads to composite plates with exceptionally high thickness-direction electrical conductivity.

Shi, Jinjun (Columbus, OH); Zhamu, Aruna (Centerville, OH); Jang, Bor Z. (Centerville, OH)

2010-07-20T23:59:59.000Z

307

Field evaluation of composite crossarms  

SciTech Connect

In 1982 the Institute of Wood Research manufactured 200 composite wood crossarms (COMARMS) for a field evaluation of their performance in service. Four different types of COMARMS were fabricated using wood flake panels to test how long term load carrying capacity is affected by varying wood furnish, wood preservatives and adhesive system. After placement with utilities in Louisiana, Michigan, New Mexico, Texas and Washington, field inspections were carried out on over 120 COMARMS after 3 years of exposure and 6 years exposure. After 6 years of exposure, most of the COMARMS were removed at random and returned to the Institute for destructive mechanical testing and evaluation. Half of the controls were mechanically tested soon after fabrication, the other half were tested with the exposed COMARMS after six years of inside storage. Tests of insulating performance in weathered and unweathered arms were carried out by Detroit Edison Company. Results of the mechanical tests and field inspections showed a wide variety of performance strongly correlated to the formulation type. Results of the mechanical and electrical testing indicate that performance similar to that observed in the best formulations would be comparable to Douglas-fir crossarms. 24 refs.

Diebel, J.F.; Charneski, M.D.; Bulleit, W.A.; Pickens, J.M. (Michigan Technological Univ., Houghton, MI (United States). Inst. of Wood Research)

1991-10-01T23:59:59.000Z

308

Hail ice impact on composite structures at glancing angles  

E-Print Network (OSTI)

ice impacts on woven carbon/epoxy composite panels. ”Composites: Part A 34 (2003), pp. 25 - 41. Jones, R. , Paul,of Impact Damage in Composites: Some Problems and Answers. ”

Funai, Sho

2012-01-01T23:59:59.000Z

309

Wood-Composites Industry Benefits from ALS Research  

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

Wood-Composites Industry Benefits from ALS Research Wood-Composites Industry Benefits from ALS Research Print Thursday, 25 October 2012 10:44 paris-wood composites Wood scientist...

310

Health monitoring method for composite materials  

DOE Patents (OSTI)

An in-situ method for monitoring the health of a composite component utilizes a condition sensor made of electrically conductive particles dispersed in a polymeric matrix. The sensor is bonded or otherwise formed on the matrix surface of the composite material. Age-related shrinkage of the sensor matrix results in a decrease in the resistivity of the condition sensor. Correlation of measured sensor resistivity with data from aged specimens allows indirect determination of mechanical damage and remaining age of the composite component.

Watkins, Jr., Kenneth S. (Dahlonega, GA); Morris, Shelby J. (Hampton, VA)

2011-04-12T23:59:59.000Z

311

Fiber Reinforced Polymer Composite Manufacturing Workshop  

Office of Energy Efficiency and Renewable Energy (EERE)

A workshop on Fiber Reinforced Polymer (FRP) Composite Manufacturing (held January 13, 2014, in Arlington, VA) brought together stakeholders from industry and academia to discuss manufacturing of composites. The workshop explored emerging FRP composite market applications in clean energy and barriers to the development and widespread commercial use of these lightweight, high-strength and high-stiffness materials. Improving the manufacturing speed and quality-and reducing their manufacturing costs-could accelerate their use in automotive, wind, compressed gas storage and other clean energy and industrial applications.

312

Method of making multilayered titanium ceramic composites  

DOE Patents (OSTI)

A method making a titanium ceramic composite involves forming a hot pressed powder body having a microstructure comprising at least one titanium metal or alloy layer and at least one ceramic particulate reinforced titanium metal or alloy layer and hot forging the hot pressed body follwed by hot rolling to substantially reduce a thickness dimension and substantially increase a lateral dimension thereof to form a composite plate or sheet that retains in the microstructure at least one titanium based layer and at least one ceramic reinforced titanium based layer in the thickness direction of the composite plate or sheet.

Fisher, George T., II; Hansen; Jeffrey S.; Oden; Laurance L.; Turner; Paul C.; Ochs; Thomas L.

1998-08-25T23:59:59.000Z

313

IDENTIFYING ACTIVITY? 1. First-Order Conditions for Composite ...  

E-Print Network (OSTI)

Dec 6, 2010 ... the more general setting of composite nonsmooth minimization, in which ... In this work we study “active set” ideas in this composite framework.

2010-12-06T23:59:59.000Z

314

Composition-Controlled Synthesis of Bimetallic Gold-Silver Nanoparticl...  

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

Composition-Controlled Synthesis of Bimetallic Gold-Silver Nanoparticles. Composition-Controlled Synthesis of Bimetallic Gold-Silver Nanoparticles. Abstract: This paper reports...

315

NASA's Composite Portfolio: Department of Energy Workshop Fiber...  

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

Aeronautics and Space Administration NASA 's Composites Portfolio Department of Energy Workshop Fiber Reinforced Polymer Composites Manufacturing Presented by: John Vickers January...

316

Polymer Composites Research in the ALM Materials Program | Department...  

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

merit08warren2.pdf More Documents & Publications Polymer Composites Research in the LM Materials Program Overview Structural Automotive Components from Composite Materials...

317

Three-Dimensional Composite Nanostructures for Lean NOx Emission...  

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

Three-Dimensional Composite Nanostructures for Lean NOx Emission Control Three-Dimensional Composite Nanostructures for Lean NOx Emission Control 2010 DOE Vehicle Technologies and...

318

Biomass Compositional Analysis: NIR Rapid Methods (Fact Sheet...  

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

at NREL use near-infrared spectroscopy to predict the composition of a variety of biomass types. Photo by Dennis Schroeder, NREL 26528 Biomass Compositional Analysis: NIR...

319

Extrusion and Properties of Nanoclay Added Composite Polypropylene Monofilaments.  

E-Print Network (OSTI)

??This study focuses on combining traditional polymeric materials with nanoclays to engineer new composite monofilaments for nontraditional industries using extrusion process. Polypropylene/nanoclay composite monofilaments were… (more)

Selver, Erdem

2010-01-01T23:59:59.000Z

320

Advanced Materials and Processing of Composites for High Volume...  

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

and Processing of Composites for High Volume Applications FY 2009 Progress Report for Lightweighting Materials - 8. Polymer Composites Research and Development Carbon Fiber SMC...

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


321

Engineering Property Prediction Tools for Tailored Polymer Composite...  

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

Tailored Polymer Composite Structures Vehicle Technologies Office Merit Review 2014: Predictive Engineering Tools for Injection-Molded Long-Carbon-Fiber Thermoplastic Composites...

322

Advanced Materials and Processing of Composites for High Volume...  

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

Publications Advanced Materials and Processing of Composites for High Volume Applications Carbon Fiber SMC Advanced Materials and Processing of Composites for High Volume...

323

Characterization of composites with aligned carbon nanotubes (CNTs) as reinforcement  

E-Print Network (OSTI)

Carbon nanotubes' (CNTs) superlative combination of electrical, thermal, and especially mechanical properties make them ideal candidates for composite reinforcement. Nanocomposites and hybrid composite architectures employing ...

García, Enrique J

2006-01-01T23:59:59.000Z

324

Acicular Mullite-Cordierite Composites with Controllable CTE...  

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

CTE Acicular Mullite-Cordierite Composites with Controllable CTE CTE values and fracture strengths of porous mullite-cordierite composites can be controlled by varying...

325

General Method for Determination of the Surface Composition in...  

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

Method for Determination of the Surface Composition in Bimetallic Nanoparticle Catalysts from the L Edge X-ray General Method for Determination of the Surface Composition in...

326

Fiber Reinforced Polymer Composite Manufacturing - RFI DE-FOA...  

Energy Savers (EERE)

Polymer Composite Manufacturing - RFI Part 2 DE-FOA-0001056: Summary of Responses Clean Energy Manufacturing Innovation Institute for Composite Materials And Structures Webinar...

327

Composites for Multi-energy conversion & waste heat recovery  

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

Discusses development of a composite that transfers energy between thermal, electrical, magnetic, and mechanical types and a composite material that improves performance through in situ strengthening

328

Local environment and composition of magnesium gallium layered...  

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

Local environment and composition of magnesium gallium layered double hydroxides determined from solid-state 1H and 71Ga NMR Local environment and composition of magnesium gallium...

329

Effect of Thickness on the Structure, Composition and Properties...  

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

Effect of Thickness on the Structure, Composition and Properties of Titanium Nitride Nano-Coatings. Effect of Thickness on the Structure, Composition and Properties of Titanium...

330

Composition and Reactions of Atmospheric Aerosol Particles  

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

Composition and Reactions of Composition and Reactions of Atmospheric Aerosol Particles Composition and Reactions of Atmospheric Aerosol Particles Print Wednesday, 29 June 2005 00:00 Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

331

Polymer/Elastomer and Composite Material Science  

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

/ Elastomer and / Elastomer and Composite Material Science KEVIN L. SIMMONS Pacific Northwest National Laboratory, Richland, WA DOE Headquarters, Forrestal Bldg. October 17-18, 2012 January 17, 2013 Kevin.simmons@pnnl.gov 1 Outline Hydrogen production, transmission, distribution, delivery system Common themes in the hydrogen system Automotive vs infrastructure Hydrogen use conditions Polymer/elastomer and composites compatibility? Common materials in BOP components, hoses, and liners Common materials in composite tank and piping Material issues Polymers/Elastomers Composites Questions 2 Main Points to Remember 1) Polymers are extensively used in hydrogen and fuel cell applications 2) Hydrogen impact on polymers is not well understood 3) Next steps 3 4 Hydrogen Production Systems

332

Aerogel composites using chemical vapor infiltration  

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

Aerogel composites using chemical vapor infiltration Aerogel composites using chemical vapor infiltration Title Aerogel composites using chemical vapor infiltration Publication Type Journal Article Year of Publication 1995 Authors Hunt, Arlon J., Michael R. Ayers, and Wanqing Cao Journal Journal of Non-Crystalline Solids Volume 185 Pagination 227-232 Abstract A new method to produce novel composite materials based on the use of aerogels as a starting material is described. Using chemical vapor infiltration, a variety of solid materials were thermally deposited into the open pore structure of aerogel. The resulting materials possess new and unusual properties including photoluminescence, magnetism and altered optical properties. An important characteristic of this preparation process is the very small size of the deposits that gives rise to new behaviors. Silicon deposits exhibit photoluminescence, indicating quantum confinement. Two or more phases may be deposited simultaneously and one or both chemically or thermally reacted to produce new structures.

333

Composite carbon-ceramic hollow fiber membranes  

SciTech Connect

This work describes the synthesis of a new type of composite membrane by applying porous ceramic layers onto the surface of carbon membranes using the sol-gel process. The pore structure is discussed.

Linkov, V.M.; Kaiser, K.; Sanderson, R.; Lapidus, A.L. [Rossiiskaya Akademiya, Nauk (Russian Federation)

1994-12-31T23:59:59.000Z

334

Chaotic Cryptographic Scheme Based on Composition Maps  

E-Print Network (OSTI)

In recent years, a growing number of cryptosystems based on chaos have been proposed. But most of them encountered many problems such as small key space and weak security. In the present paper, a new kind of chaotic cryptosystem based on Composition of Trigonometric Chaotic Maps is proposed. These maps which are defined as ratios of polynomials of degree N, have interesting properties such as invariant measure, ergodicity, variable chaotic region with respect to the control parameters and ability to construct composition form of maps. We have used a composition of chaotic map to shuffle the position of image pixels. Another composition of chaotic map is used in diffusion process. According to the performed analysis, the introduced algorithm can satisfy the required performances such as high level security, large key space and the acceptable encryption speed.

S. Behnia; A. Akhshani; A. Akhavan; H. Mahmodi

2006-06-27T23:59:59.000Z

335

Modeling of cryogen leakage through composite laminates  

E-Print Network (OSTI)

Cryogenic composites ?nd critical application in the manufacture of fuel tanks for reusable launch vehicles due to signi?cant reduction in overall structural weight of the tank. These fuel tanks contain pressurized cryogen...

Peddiraju, Naga Venkata Satya Pravin Kumar

2005-02-17T23:59:59.000Z

336

Double Beta Decay Constraint on Composite Neutrinos  

Science Journals Connector (OSTI)

......Constraint on Composite Neutrinos Eiichi Takasugi Department of Physics, Osaka University, Toyonaka 560 Neutrinoless double beta decay (betabeta)0v occurs through the magnetic coupling of dimension five operator whose coupling constant is......

Eiichi Takasugi

1997-10-01T23:59:59.000Z

337

Structural Automotive Components from Composite Materials | Department...  

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

Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. lm08kia.pdf More Documents & Publications Structural Automotive Components from Composite...

338

Aging of polymeric composites : a literature review  

E-Print Network (OSTI)

Due to their increased use in today's society, an extensive survey was undertaken in this report to condense what's been, thus far, discovered as to the effects of aging on polymeric composites. Special emphasis was placed ...

Trevińo-Garrido, Margie N

2013-01-01T23:59:59.000Z

339

Polymer/Elastomer and Composite Material Science  

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

Presentation by Kevin Simmons, Pacific Northwest National Laboratory, at the U.S. Department of Energy's Polymer and Composite Materials Meeting, held October 17-18, 2012, in Washington, D.C.

340

Mechanics Methodology for Textile Preform Composite Materials  

Science Journals Connector (OSTI)

NASA and its contractors have completed a program to develop a basic mechanics underpinning for textile composites. Three major deliverables were produced by the program: (1.) a set of test methods for measuring material properties and design allowables, ...

Jr Clarence C. Poe

1996-11-01T23:59:59.000Z

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


341

Spring 2013 Composite Data Products - Backup Power  

SciTech Connect

This presentation from the U.S. Department of Energy's National Renewable Energy Laboratory includes 21 composite data products (CDPs) produced in Spring 2013 for fuel cell backup power systems.

Kurtz, J.; Wipke, K.; Sprik, S.; Ramsden, T.; Ainscough, C.; Saur, G.; Post, M.; Peters, M.

2013-05-01T23:59:59.000Z

342

Composite attachment: the Trek bottom bracket  

E-Print Network (OSTI)

Bottom bracket failures have been one of the most common failures in the composite bicycle frames produced by the Trek Bicycle Corporation. The bottom bracket is the portion of the frame that supports the crank and pedals. An aluminum insert...

Mallard, David

2013-02-22T23:59:59.000Z

343

Managing Milk Composition: Normal Sources of Variation  

E-Print Network (OSTI)

Many factors influence the composition of milk, including environment, level of production, stage of lactation, disease, season, and genetics and age of the animal. This publication explains the effect of each....

Stokes, Sandra R.; Jordan, Ellen R.; Looper, Mike; Waldner, Dan

2000-12-11T23:59:59.000Z

344

Compositional evaluation of asphalt binder recycling agents  

E-Print Network (OSTI)

Several experiments were performed to determine how recycling agent composition affects the high, intermediate, and low temperature properties as well as long term oxidative aging characteristics of recycled asphalt blends. Specifically, several...

Madrid, Richard Charles

1997-01-01T23:59:59.000Z

345

Dynamic Fracture Toughness of Polymer Composites  

E-Print Network (OSTI)

that of defense or transport. In this project, the focus is on determining dynamic fracture toughness property of fiber reinforced polymer composites by using a combined numerical- experimental methodology. Impact tests are conducted on Split-Hopkinson pressure...

Harmeet Kaur

2012-02-14T23:59:59.000Z

346

Low temperature joining of ceramic composites  

DOE Patents (OSTI)

A method of joining similar or dissimilar ceramic and ceramic composite materials, such as SiC continuous fiber ceramic composites, at relatively low joining temperatures uses a solventless, three component bonding agent effective to promote mechanical bond toughness and elevated temperature strength to operating temperatures of approximately 1200 C. The bonding agent comprises a preceramic precursor, an aluminum bearing powder, such as aluminum alloy powder, and mixtures of aluminum metal or alloy powders with another powder, and boron powder in selected proportions. The bonding agent is disposed as an interlayer between similar or dissimilar ceramic or ceramic composite materials to be joined and is heated in ambient air or inert atmosphere to a temperature not exceeding about 1200 C to form a strong and tough bond joint between the materials. The bond joint produced is characterized by a composite joint microstructure having relatively soft, compliant aluminum bearing particulate regions dispersed in a ceramic matrix. 3 figs.

Barton, T.J.; Anderson, I.E.; Ijadi-Maghsoodi, S.; Nosrati, M.; Unal, O.

1999-07-13T23:59:59.000Z

347

Composite materials in dynamic shipboard structural mounts  

E-Print Network (OSTI)

The purpose of this thesis is to investigate the viability of replacing traditional metal structural and machinery mounts with padding made of composite material. The two types of padding or isolation materials are represented ...

Faulk, Joanna (Joanna E.)

2011-01-01T23:59:59.000Z

348

Fabric composite heat pipe technology development  

SciTech Connect

Testing has been performed on a variety of fabric composite technology feasibility issues. These include an evaluation of the effective radiation heat transfer rate from a heated metallic surface covered by a ceramic fabric with the intent of determining the effective emissivity'' of the combination of materials, studies of the wicking properties of ceramic fabrics, and the construction of fabric composite heat pipes to test their working properties under both steady state and transient conditions. Results of these experiments shown that fabric composite combinations have greatly enhanced effective emissivities'' resulting from the increases surface area of the fabric, ceramic fabrics can work very well as the wick for heat pipes, ceramic fabric heat pipes have been demonstrated to operate under typical space conditions, and large mass reductions are possible by using fabric composite heat pipes for heat rejection radiator systems.

Klein, A.C.; Gulshan-Ara, Z.; Kiestler, W.; Snuggerud, R.; Marks, T.S. (Department of Nuclear Engineering, Oregon State University, Corvallis, Oregon 97331 (United States))

1993-01-10T23:59:59.000Z

349

Composite Bridges New Developments in Europe  

Science Journals Connector (OSTI)

The present paper deals with new developments for composite bridges, as they have been opened recently to traffic. Firstly some indications are given for the materials used, i.e. weathering steel as an example fo...

P. Dubas

1991-01-01T23:59:59.000Z

350

RADIATION EFFECTS ON EPOXY CARBON FIBER COMPOSITE  

SciTech Connect

Carbon fiber-reinforced bisphenol-A epoxy matrix composite was evaluated for gamma radiation resistance. The composite was exposed to total gamma doses of 50, 100, and 200 Mrad. Irradiated and baseline samples were tested for tensile strength, hardness and evaluated using FTIR (Fourier transform infrared) spectroscopy and DSC (differential scanning calorimetry) for structural changes. Scanning electron microscopy was used to evaluate microstructural behavior. Mechanical testing of the composite bars revealed no apparent change in modulus, strain to failure, or fracture strength after exposures. However, testing of only the epoxy matrix revealed changes in hardness, thermal properties, and FTIR results with increasing gamma irradiation. The results suggest the epoxy within the composite can be affected by exposure to gamma irradiation.

Hoffman, E

2008-05-30T23:59:59.000Z

351

Energetx Composites LLC | Open Energy Information  

Open Energy Info (EERE)

Energetx Composites LLC Energetx Composites LLC Jump to: navigation, search Name Energetx Composites LLC Place Holland, Michigan Zip 49423 Sector Wind energy Product Michigan-based manufacturer of fibre-reinforced composites used in wind and other industries. Coordinates 42.7875235°, -86.1089301° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.7875235,"lon":-86.1089301,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

352

Composite treatment of ceramic tile armor  

DOE Patents (OSTI)

An improved ceramic tile armor has a core of boron nitride and a polymer matrix composite (PMC) facing of carbon fibers fused directly to the impact face of the tile. A polyethylene fiber composite backing and spall cover are preferred. The carbon fiber layers are cured directly onto the tile, not adhered using a separate adhesive so that they are integral with the tile, not a separate layer.

Hansen, James G. R. (Oak Ridge, TN) [Oak Ridge, TN; Frame, Barbara J. (Oak Ridge, TN) [Oak Ridge, TN

2010-12-14T23:59:59.000Z

353

Composite treatment of ceramic tile armor  

DOE Patents (OSTI)

An improved ceramic tile armor has a core of boron nitride and a polymer matrix composite (PMC) facing of carbon fibers fused directly to the impact face of the tile. A polyethylene fiber composite backing and spall cover are preferred. The carbon fiber layers are cured directly onto the tile, not adhered using a separate adhesive so that they are integral with the tile, not a separate layer.

Hansen, James G. R. (Oak Ridge, TN); Frame, Barbara J. (Oak Ridge, TN)

2012-01-02T23:59:59.000Z

354

Agouti polynucleotide compositions and methods of use  

DOE Patents (OSTI)

Disclosed are methods and compositions comprising novel agouti polypeptides and the polynucleotides which encode them. Also disclosed are DNA segments encoding these proteins derived from human and murine cell lines, and the use of these polynucleotides and polypeptides in a variety of diagnostic and therapeutic applications. Methods, compositions, kits, and devices are also provided for identifying compounds which are inhibitors of agouti activity, and for altering fatty acid synthetase activity and intracellular calcium levels in transformed cells.

Woychik, Richard P. (Orinda, CA); Bultman, Scott J. (Lakewood, OH); Michaud, Edward J. (Kingston, TN)

2003-02-04T23:59:59.000Z

355

Pitch-based carbon foam and composites  

DOE Patents (OSTI)

A process for producing carbon foam or a composite is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts. The foam material can be made into a composite which is useful in high temperature sandwich panels for both thermal and structural applications.

Klett, James W. (Knoxville, TN)

2002-01-01T23:59:59.000Z

356

Pitch-based carbon foam and composites  

DOE Patents (OSTI)

A process for producing carbon foam or a composite is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts. The foam material can be made into a composite which is useful in high temperature sandwich panels for both thermal and structural applications.

Klett, James W. (Knoxville, TN)

2001-01-01T23:59:59.000Z

357

Method for designing gas tag compositions  

DOE Patents (OSTI)

For use in the manufacture of gas tags such as employed in a nuclear reactor gas tagging failure detection system, a method for designing gas tagging compositions utilizes an analytical approach wherein the final composition of a first canister of tag gas as measured by a mass spectrometer is designated as node No. 1. Lattice locations of tag nodes in multi-dimensional space are then used in calculating the compositions of a node No. 2 and each subsequent node so as to maximize the distance of each node from any combination of tag components which might be indistinguishable from another tag composition in a reactor fuel assembly. Alternatively, the measured compositions of tag gas numbers 1 and 2 may be used to fix the locations of nodes 1 and 2, with the locations of nodes 3-N then calculated for optimum tag gas composition. A single sphere defining the lattice locations of the tag nodes may be used to define approximately 20 tag nodes, while concentric spheres can extend the number of tag nodes to several hundred. 5 figures.

Gross, K.C.

1995-04-11T23:59:59.000Z

358

Method for designing gas tag compositions  

DOE Patents (OSTI)

For use in the manufacture of gas tags such as employed in a nuclear reactor gas tagging failure detection system, a method for designing gas tagging compositions utilizes an analytical approach wherein the final composition of a first canister of tag gas as measured by a mass spectrometer is designated as node #1. Lattice locations of tag nodes in multi-dimensional space are then used in calculating the compositions of a node #2 and each subsequent node so as to maximize the distance of each node from any combination of tag components which might be indistinguishable from another tag composition in a reactor fuel assembly. Alternatively, the measured compositions of tag gas numbers 1 and 2 may be used to fix the locations of nodes 1 and 2, with the locations of nodes 3-N then calculated for optimum tag gas composition. A single sphere defining the lattice locations of the tag nodes may be used to define approximately 20 tag nodes, while concentric spheres can extend the number of tag nodes to several hundred.

Gross, Kenny C. (1433 Carriage La., Bolingbrook, IL 60440)

1995-01-01T23:59:59.000Z

359

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

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.}

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

360

Nanostructured metal-polyaniline composites and applications thereof  

DOE Patents (OSTI)

Metal-polyaniline (PANI) composites are provided together with a process of preparing such composites by an electrodeless process. The metal of the composite can have nanoscale structural features and the composites can be used in applications such as catalysis for hydrogenation reactions and for analytical detection methods employing SERS.

Wang, Hsing-Lin; Li, Wenguang; Bailey, James A.; Gao, Yuan

2012-10-02T23:59:59.000Z

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


361

Refactoring Composite to Visitor and Inverse Transformation in Java  

E-Print Network (OSTI)

Refactoring Composite to Visitor and Inverse Transformation in Java Akram Ajouli1 & Julien Cohen2 1, EMN) We describe how to use refactoring tools to transform a Java program conforming to the Composite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 CompositeVisitor Transformation Scheme 7 3.1 CompositeVisitor Transformation

Paris-Sud XI, Université de

362

Refactoring Composite to Visitor and Inverse Transformation in Java  

E-Print Network (OSTI)

Refactoring Composite to Visitor and Inverse Transformation in Java Akram Ajouli1 & Julien Cohen2 1, EMN) We describe how to use refactoring tools to transform a Java program conforming to the Composite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 CompositeVisitor Transformation Scheme 7 3.1 CompositeVisitor Transformation

Paris-Sud XI, Université de

363

Tribological and Mechanical Behaviour of Epoxy/Nanoclay Composites  

Science Journals Connector (OSTI)

Due to the nature and availability of nanoclay material, its application as reinforcement of composite...

M. Esteves; A. Ramalho; J. A. M. Ferreira; J. P. Nobre

2013-10-01T23:59:59.000Z

364

Immunostimulatory nanoparticles and related compositions, methods and systems  

SciTech Connect

Provided herein are immunostimulatory nanolipoprotein particles and related compositions methods and systems.

Hoeprich, Paul D; Fischer, Nicholas O; Blanchette, Craig; Mason, Peter W

2014-11-18T23:59:59.000Z

365

MATERNAL BODY COMPOSITION LATE IN PREGNANCY AND INFANT BODY COMPOSITION AT BIRTH  

E-Print Network (OSTI)

late in pregnancy and neonatal body composition at birth. The secondary aim of this study was to investigate the association between maternal trimester-specific GWG and neonatal body composition at birth. Methods: Healthy pregnant women with a pre-pregnancy...

Li, Shengqi

2013-12-31T23:59:59.000Z

366

Improving aircraft composite inspections using optimized reference standards  

SciTech Connect

The rapidly increasing use of composites on commercial airplanes coupled with the potential for economic savings associated with their use in aircraft structures means that the demand for composite materials technology will continue to increase. Inspecting these composite structures is a critical element in assuring this continued airworthiness. The FAA`s Airworthiness Assurance NDI Validation Center, in conjunction with the Commercial Aircraft Composite Repair committee, is developing a set of composite reference standards to be used in NDT equipment calibration for accomplishment of damage assessment and post-repair inspection of all commercial aircraft composites. In this program, a series of NDI tests on a matrix of composite aircraft structures and prototype reference standards were completed in order to minimize the number of standards needed to carry out composite inspections on aircraft. Two tasks, related to composite laminates and non-metallic composite honeycomb configurations, were addressed.

Roach, D.; Dorrell, L. [Sandia National Labs., Albuquerque, NM (United States). FAA Airworthiness Assurance NDI Validation Center; Kollgaard, J. [Boeing Commercial Aircraft Co., Seattle, WA (United States); Dreher, T. [United Airlines (United States)

1998-10-01T23:59:59.000Z

367

Characterization of Nanoparticle/Polymer Melt Composites  

Science Journals Connector (OSTI)

Two types of nanoparticles are studied: carbon nanofibers and nanoclays. These nanoparticles are incorporated into a polystyrene matrix using different techniques. For the carbon nanofiber/PS composite solvent casting assisted with sonication and melt compounding methods are used. For nanoclay/PS system exfoliated and intercalated composites are prepared using in?situ polymerization and melt compounding methods respectively. Dispersion of these nanoparticles in the PS matrix is studied using TEM SEM and XRD. Rheological characterization of these composites is studied using the Rheometrics Mechanical Spectrometer (RMS800) for shear rheology and Rheometrics Melt Extensiometer (RME) for extensional rheology. Effects of the nanoparticle concentration and dispersion methods on the rheology are studied. The morphology of the composites is studied after the samples have been deformed in the rheometers at certain stage. The orientation of the nanoparticles is quantified based on TEM micrographs. Models are developed to relate the rheology the rheology of nanoparticle/polymer composites to particle concentration orientation and length; these model predictions are compared with our experimentak measurements.

Kurt Koelling; Stephen Bechtel; Jianhua Xu; Yingru Wang

2004-01-01T23:59:59.000Z

368

Coupling of a two phase gas liquid compositional 3D Darcy flow with a 1D compositional free gas  

E-Print Network (OSTI)

Coupling of a two phase gas liquid compositional 3D Darcy flow with a 1D compositional free gas. Masson1 , L. Trenty2 , Y. Zhang1 Coupling of a two phase gas liquid compositional 3D Darcy flow #12 analysis K, Brenner1 , R. Masson1 , L. Trenty2 , Y. Zhang1 Coupling of a two phase gas liquid compositional

Ribot, Magali

369

EcoComposite LLC | Open Energy Information  

Open Energy Info (EERE)

EcoComposite LLC EcoComposite LLC Jump to: navigation, search Name EcoComposite LLC Place Sacramento, California Zip 95814 Product Focused on development of products based on alternative energy sources such as PEM fuel cells. Coordinates 38.579065°, -121.491014° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.579065,"lon":-121.491014,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

370

Unearthing the Composition of Our Planet's Core  

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

Unearthing the Composition of Our Planet's Core Unearthing the Composition of Our Planet's Core The chemical composition of the Earth's core is surprisingly complicated, according to high-temperature, high-pressure experiments conducted by University of Chicago scientists using the William M. Keck High Pressure Laboratory at the GSECARS facility, APS sector 13. This research has produced experimental evidence suggesting that the Earth's inner core largely consists of two exotic forms of iron (rather than one as previously thought) that appear to be alloyed with silicon. Backscattered electron image of the quenched laser-heated diamond anvil cell sample from 31 GPa and 1976K. ( J.-F. Lin et al.) Above: Backscattered electron image of the quenched laser-heated diamond anvil cell sample from 31 GPa and 1976K. ( J.-F. Lin et al.)

371

Composition and Reactions of Atmospheric Aerosol Particles  

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

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

372

Composite Technology Corporation | Open Energy Information  

Open Energy Info (EERE)

Composite Technology Corporation Composite Technology Corporation Place Irvine, California Zip 92614 Product Designs, manufacturers and markets a diversified line of composite products for the power industry. Website http://www.compositetechcorp.c Coordinates 41.837752°, -79.268594° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.837752,"lon":-79.268594,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

373

The Cosmology of Composite Inelastic Dark Matter  

SciTech Connect

Composite dark matter is a natural setting for implementing inelastic dark matter - the O(100 keV) mass splitting arises from spin-spin interactions of constituent fermions. In models where the constituents are charged under an axial U(1) gauge symmetry that also couples to the Standard Model quarks, dark matter scatters inelastically off Standard Model nuclei and can explain the DAMA/LIBRA annual modulation signal. This article describes the early Universe cosmology of a minimal implementation of a composite inelastic dark matter model where the dark matter is a meson composed of a light and a heavy quark. The synthesis of the constituent quarks into dark hadrons results in several qualitatively different configurations of the resulting dark matter composition depending on the relative mass scales in the system.

Spier Moreira Alves, Daniele; Behbahani, Siavosh R.; /SLAC /Stanford U., ITP; Schuster, Philip; Wacker, Jay G.; /SLAC

2011-08-19T23:59:59.000Z

374

Ion processing element with composite media  

DOE Patents (OSTI)

An ion processing element employing composite media disposed in a porous substrate, for facilitating removal of selected chemical species from a fluid stream. The ion processing element includes a porous fibrous glass substrate impregnated by composite media having one or more active components supported by a matrix material of polyacrylonitrile. The active components are effective in removing, by various mechanisms, one or more constituents from a fluid stream passing through the ion processing element. Due to the porosity and large surface area of both the composite medium and the substrate in which it is disposed, a high degree of contact is achieved between the active component and the fluid stream being processed. Further, the porosity of the matrix material and the substrate facilitates use of the ion processing element in high volume applications where it is desired to effectively process a high volume flows.

Mann, Nick R. (Blackfoot, ID); Tranter, Troy J. (Idaho Falls, ID); Todd, Terry A. (Aberdeen, ID); Sebesta, Ferdinand (Prague, CZ)

2009-03-24T23:59:59.000Z

375

Triphasic Composite And Method Of Making Same  

DOE Patents (OSTI)

A method for fabricating a triphasic composite such as a WC/Co/diamond composite with a high volume fraction of diamond in a WC/Co matrix. The method involves sintering of a WC/Co powder compact to develop a porous preform, which displays some rigidity and strength, infiltrating the porous preform with a controlled distribution of carbon, and high pressure/high temperature treatment of the carbon-containing WC/Co preform to transform the carbon to diamond. The distribution of diamond in the composite can be functionally graded to provide a WC/Co core and a diamond-enriched surface, wherein all three phases form an interconnected structure in three dimensions. Such a tricontinuous structure combines high strength and toughness with superior wear resistance, making it attractive for applications in machine tools and drill bits.

Kear, Bernard H. (Whitehouse Station, NJ); Sadangi, Rajendra K. (Highland Park, NJ); McCandlish, Larry E. (Highland Park, NJ); Voronov, Oleg (Highland Park, NJ)

2000-07-18T23:59:59.000Z

376

Higher modulus compositions incorporating particulate rubber  

DOE Patents (OSTI)

Rubber particles, to be used as fillers or extenders for various composite polymer systems, are chlorinated by a gas-solid phase reaction with a chlorine-containing gas. A composite polymer containing the chlorinated rubber fillers or extenders exhibits a higher flexural modulus than if prepared using an unchlorinated rubber filler or extender. Chlorination of the rubber particles is carried out by contacting the finely divided rubber particles with a chlorine-containing gas comprising at least about 5 volume percent chlorine. Advantageously, the chlorine can be diluted with air, nitrogen or other essentially inert gases and may contain minor amounts of fluorine. Improved performance is obtained with nitrogen dilution of the chlorine gas over air dilution. Improved polymer composite systems having higher flexural modulus result from the use of the chlorinated rubber particles as fillers instead of unchlorinated rubber particles. 2 figs.

Bauman, B.D.; Williams, M.A.; Bagheri, R.

1997-12-02T23:59:59.000Z

377

Higher modulus compositions incorporating particulate rubber  

DOE Patents (OSTI)

Rubber particles, to be used as fillers or extenders for various composite polymer systems, are chlorinated by a gas-solid phase reaction with a chlorine-containing gas. A composite polymer containing the chlorinated rubber fillers or extenders exhibits a higher flexural modulus than if prepared using an unchlorinated rubber filler or extender. Chlorination of the rubber particles is carried out by contacting the finely divided rubber particles with a chlorine-containing gas comprising at least about 5 volume percent chlorine. Advantageously, the chlorine can be diluted with air, nitrogen or other essentially inert gases and may contain minor amounts of fluorine. Improved performance is obtained with nitrogen dilution of the chlorine gas over air dilution. Improved polymer composite systems having higher flexural modulus result from the use of the chlorinated rubber particles as fillers instead of unchlorinated rubber particles.

Bauman, Bernard D. (Emmaus, PA); Williams, Mark A. (Souderton, PA); Bagheri, Reza (Bethlehem, PA)

1997-12-02T23:59:59.000Z

378

Free form fabrication of thermoplastic composites  

SciTech Connect

This report describes the results of composites fabrication research sponsored by the Laboratory Directed Research and Development (LDRD) program at Sandia National Laboratories. They have developed, prototyped, and demonstrated the feasibility of a novel robotic technique for rapid fabrication of composite structures. Its chief innovation is that, unlike all other available fabrication methods, it does not require a mold. Instead, the structure is built patch by patch, using a rapidly reconfigurable forming surface, and a robot to position the evolving part. Both of these components are programmable, so only the control software needs to be changed to produce a new shape. Hence it should be possible to automatically program the system to produce a shape directly from an electronic model of it. It is therefore likely that the method will enable faster and less expensive fabrication of composites.

Kaufman, S.G.; Spletzer, B.L.; Guess, T.R.

1998-02-01T23:59:59.000Z

379

Autoclave molding of Avimid K composites  

SciTech Connect

Boeing is currently developing the capability to fabricate high performance structural aircraft components from a thermoplastic composite material using autoclave molding. The Avimid K{reg sign} thermoplastic system has been chosen due to the unique drape and tack, which allows for adaptation of the automated fabrication techniques applicable to thermoset composite systems. This provides a basis for low risk, cost effective production. Laminate wing skins, C-channel, sine wave and I-beam spars, box joggled ribs, and sandwich panels as described have been successfully fabricated using autoclave molding. Low coefficient of thermal expansion (CTE) tooling materials, suitable for autoclave molding, are being utilized. Concepts for automated fabrication to eliminate hand layup, which is one of the two major cost drivers associated with composite structures, are being developed and are described.

Baker, E.T.; Gesell, T.L. (Boeing Co., Seattle, WA (USA))

1990-07-01T23:59:59.000Z

380

Novel hard compositions and methods of preparation  

DOE Patents (OSTI)

Novel very hard compositions of matter are prepared by using in all embodiments only a minor amount of a particular carbide (or materials which can form the carbide in situ when subjected to heat and pressure); and no strategic cobalt is needed. Under a particular range of conditions, densified compositions of matter of the invention are prepared having hardnesses on the Rockwell A test substantially equal to the hardness of pure tungsten carbide and to two of the hardest commercial cobalt-bonded tungsten carbides. Alternately, other compositions of the invention which have slightly lower hardnesses than those described above in one embodiment also possess the advantage of requiring no tungsten and in another embodiment possess the advantage of having a good fracture toughness value.

Sheinberg, H.

1981-02-03T23:59:59.000Z

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


381

Composition and method for encapsulating photovoltaic devices  

DOE Patents (OSTI)

A composition and method for encapsulating a photovoltaic device which minimizes discoloration of the encapsulant. The composition includes an ethylene-vinyl acetate encapsulant, a curing agent, an optional ultraviolet light stabilizer, and/or an optional antioxidant. The curing agent is preferably 1,1-di-(t-butylperoxy)-3,3,5-trimethylcyclohexane; the ultraviolet light stabilizer is bis-(N-octyloxy-tetramethyl) piperidinyl sebacate and the antioxidant is selected from the group consisting of tris (2,4-di-tert-butylphenyl) phosphite, tetrakis methylene (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) methane, octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, and 2,2'-ethylidene bis(4,6-di-t-butylphenyl) fluorophosponite. The composition is applied to a solar cell then cured. The cured product contains a minimal concentration of curing-generated chromophores and resists UV-induced degradation.

Pern, Fu-Jann (Golden, CO)

2000-01-01T23:59:59.000Z

382

Chapter 5 - Coal Composition and Reservoir Characterization  

Science Journals Connector (OSTI)

Abstract Coal consists of organic and mineral matter. Fixed carbon from organic matter measures the energy output of coal during combustion. Mineral matter determines how coal responds to combustion and affects reservoir porosity and permeability. Minerals infill pores, cleats, or fractures and replace the organic composition of coal. Organic composition is grouped into maceral association as microlithotypes and macrolithotypes, the latter for megascopic field descriptions (e.g. coal cores and mine face). Coal composition controls reservoir properties such as gas adsorption capacity, gas content, porosity, and permeability. Permeability is important to gas transport from coal matrix pores to the production well. Coal permeability is a function of the width, length, and height of cleats or fractures as well as the aperture, spacing, frequency or density, and connectivity of cleats or fractures. Coal cleats or fractures formed during burial, compaction, and coalification (endogenetic) and after coalification during deformation, uplift, and erosion of the basin of deposition.

Romeo M. Flores

2014-01-01T23:59:59.000Z

383

Composite keys? | OpenEI Community  

Open Energy Info (EERE)

Composite keys? Composite keys? Home > Groups > Databus Does DataBus support using composite keys in a Table definition? If not, is there a way to automatically generate a unique value for each entry that is uploaded? Submitted by Hopcroft on 5 September, 2013 - 17:13 1 answer Points: 0 At this time, no, and no way to generate unique key either right now. You can submit a feature request for this though on github. thanks, Dean Deanhiller on 6 September, 2013 - 06:58 Groups Menu You must login in order to post into this group. Recent content Go to My Databus->Data Streams... yes, it is done the same way y... Update rows? How to use streaming chart? if you are an administrator, s... more Group members (6) Managers: Deanhiller Recent members: Hopcroft Vikasgoyal Ksearight NickL

384

Composition and Reactions of Atmospheric Aerosol Particles  

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

Composition and Reactions of Atmospheric Aerosol Particles Print Composition and Reactions of Atmospheric Aerosol Particles Print Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate. Measurements based on high-resolution scanning transmission x-ray images obtained at the ALS have revealed chemical reactions on and in atmospheric aerosol particles that caused particle growth while changing organic composition by 13 to 24% per day, an oxidation rate significantly slower than is currently used in atmospheric models. Since oxidation has a strong effect on particle lifetime in the atmosphere, these results will help climate scientists refine the computer models used to predict climate change.

385

Heat treated wood–nylon 6 composites  

Science Journals Connector (OSTI)

Abstract Heat treatment is a relatively benign modification method that is growing as an industrial process to improve hygroscopicity, dimensional stability and biological resistance of lignocellulosic fillers. There also has been increased interest in the use of lignocellulosic fillers in numerous automotive applications. This study investigated the influence of untreated and heat treated wood fillers on the mechanical and rheological properties of wood filled nylon 6 composites for possible under-the-hood applications in the automobile industry where conditions are too severe for commodity plastics to withstand. In this study, exposure of wood to high temperatures (212 °C for 8 h) improved the thermal stability and crystallinity of wood. Heat treated pine and maple filled nylon 6 composites (at 20 wt.% loading) had higher tensile strengths among all formulations and increased tensile strength by 109% and 106% compared to neat nylon 6, respectively. Flexural modulus of elasticity (FMOE) of the neat nylon 6 was 2.34 GPa. The FMOE increased by 101% and 82% with the addition of 30 wt.% heat treated pine and 20 wt.% heat treated maple, where it reached maximum values of 4.71 GPa and 4.27 GPa, respectively. The rheological properties of the composites correlated with the crystallinity of wood fillers after the heat treatment. Wood fillers with high crystallinity after heat treatment contributed to a higher storage modulus, complex viscosity and steady shear viscosity and low loss factor in the composites. This result suggests that heat treatment substantially affects the mechanical and rheological properties of wood filled nylon 6 composites. The mechanical properties and thermogravimetric analysis indicated that the heat treated wood did not show significant thermal degradation under 250 °C, suggesting that the wood-filled nylon composites could be especially relevant in thermally challenging areas such as the manufacture of under-the-hood automobile components.

Deniz Aydemir; Alper Kiziltas; Esra Erbas Kiziltas; Douglas J. Gardner; Gokhan Gunduz

2015-01-01T23:59:59.000Z

386

Novel Composite Materials Demonstrate Ultra-sensitivity  

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

2, Issue 25 2, Issue 25 Novel Composite Materials Demonstrate Ultra-sensitivity Gold nanowires on graphite templates used in gas sensing application page 2 Coronary Stent Wins Technology Transfer Award page 4 University of Oregon Team Wins Competition for Commercializing NETL Technology page 5 the ENERGY lab NATIONAL ENERGY TECHNOLOGY LABORATORY 2 Novel Composite Materials Demonstrate Ultra-sensitivity-Gold nanowires on graphite templates used in gas sensing applications ____________________2 Coronary Stent Wins Technology Transfer Award ________4 University of Oregon Team Wins Competition for Commercializing NETL Technology __________________5 NETL & WVU Researchers Design New Catalysts for CO 2 Management ___________________________________6 Structurally Dynamic MOF Sorbent Selectively Adsorbs

387

Neutrinoless Double Beta Decay with Composite Neutrinos.  

E-Print Network (OSTI)

We study in detail the contribution of heavy composite Majorana neutrinos to neutrino-less double beta decay (0???). Our analysis confirms the result of a previous estimate by two of the authors. Excited neutrinos couple to the electroweak gauge bosons through a magnetic type effective Lagrangian. The relevant nuclear matrix element is related to matrix elements available in the literature and current bounds on the half-life of 0??? are converted into bounds on the compositeness scale and/or the heavy neutrino mass. Our bounds are of the same order of magnitude as those available from accelerator experiments.

O. Panella (a; C. Carimalo (b; Y. N. Srivastava (a; A. Widom (c

1997-01-01T23:59:59.000Z

388

Carbon nanotubes: from production to functional composites  

Science Journals Connector (OSTI)

In this paper, we present our work on carbon nanotubes, including our most recent results, in two important fields: production of carbon nanotubes itself and fabrication of carbon nanotube based composites with enhanced functionality. Firstly, we focus on the three main carbon nanotube production techniques, namely electric arc, laser evaporation and CVD. Based on our results, for each method the importance of the key parameters is highlighted. A comparison of production possibilities towards commercialisation concludes this section. Secondly, we report on the synthesis of a soluble and highly functional polyaniline/carbon nanotube composite and emphasise the general importance of conformational changes in order to achieve proper carbon nanotubeâ??matrix interactions.

A.M. Benito; W.K. Maser; M.T. Martinez

2005-01-01T23:59:59.000Z

389

Synthesis of polyoxometalate-loaded epoxy composites  

DOE Patents (OSTI)

The synthesis of a polyoxometalate-loaded epoxy uses a one-step cure by applying an external stimulus to release the acid from the polyoxometalate and thereby catalyze the cure reaction of the epoxy resin. Such polyoxometalate-loaded epoxy composites afford the cured epoxy unique properties imparted by the intrinsic properties of the polyoxometalate. For example, polyoxometalate-loaded epoxy composites can be used as corrosion resistant epoxy coatings, for encapsulation of electronics with improved dielectric properties, and for structural applications with improved mechanical properties.

Anderson, Benjamin J

2014-10-07T23:59:59.000Z

390

Neutrinoless double ? decay with composite neutrinos  

Science Journals Connector (OSTI)

We study in detail the contribution of heavy composite Majorana neutrinos to neutrinoless double beta decay (0???). Our analysis confirms the result of a previous estimate by two of the authors. Excited neutrinos couple to the electroweak gauge bosons through a magnetic-type effective Lagrangian. The relevant nuclear matrix element is related to matrix elements available in the literature and current bounds on the half-life of 0??? are converted into bounds on the compositeness scale and/or the heavy neutrino mass. Our bounds are of the same order of magnitude as those available from accelerator experiments.

O. Panella; C. Carimalo; Y. N. Srivastava; A. Widom

1997-11-01T23:59:59.000Z

391

Method for the production of cementitious compositions and aggregate derivatives from said compositions, and cementitious compositions and aggregates produced thereby  

DOE Patents (OSTI)

The present invention relates to a method for preparing synthetic shaped cementitious compositions having high quality even without the addition of high energy binders, such as portland cement, through the use of the spent residue from a fluidized combustion bed of the type wherein limestone particles are suspended in a fluidized medium and sulfur oxides are captured, and pulverized coal fly ash.

Minnick, L. John (Box 271, Plymouth Meeting, PA 19462)

1983-01-01T23:59:59.000Z

392

Method of producing exfoliated graphite composite compositions for fuel cell flow field plates  

DOE Patents (OSTI)

A method of producing an electrically conductive composite composition, which is particularly useful for fuel cell bipolar plate applications. The method comprises: (a) providing a supply of expandable graphite powder; (b) providing a supply of a non-expandable powder component comprising a binder or matrix material; (c) blending the expandable graphite with the non-expandable powder component to form a powder mixture wherein the non-expandable powder component is in the amount of between 3% and 60% by weight based on the total weight of the powder mixture; (d) exposing the powder mixture to a temperature sufficient for exfoliating the expandable graphite to obtain a compressible mixture comprising expanded graphite worms and the non-expandable component; (e) compressing the compressible mixture at a pressure within the range of from about 5 psi to about 50,000 psi in predetermined directions into predetermined forms of cohered graphite composite compact; and (f) treating the so-formed cohered graphite composite to activate the binder or matrix material thereby promoting adhesion within the compact to produce the desired composite composition. Preferably, the non-expandable powder component further comprises an isotropy-promoting agent such as non-expandable graphite particles. Further preferably, step (e) comprises compressing the mixture in at least two directions. The method leads to composite plates with exceptionally high thickness-direction electrical conductivity.

Zhamu, Aruna; Shi, Jinjun; Guo, Jiusheng; Jang, Bor Z

2014-04-08T23:59:59.000Z

393

A semantic QoS-aware web services composition framework  

Science Journals Connector (OSTI)

Composition of web services has received much interest to support business-to-business or enterprise application integration. However, for this composition to be effective, web services should be semantically described and developed tools must enable to select appropriate services based on functional requirements that deal with the desired functionality of the composite service, and non-functional concerns that relate to issues like performance and availability. This presents a challenging task due to the increasing number of available web services with their descriptions remaining in the syntactic level. In this paper, we propose a semantic QoS-aware web services composition framework. This framework considers a two-stage composition process. An abstract composition stage consists in semantically constructing a composition of available services that provides the desired functionality. Then, a concrete composition stage turns the abstract plan into an executable composition by selecting the appropriate web service instances based on QoS parameters.

Mohsen Rouached; Hassen Sallay

2014-01-01T23:59:59.000Z

394

Method for the production of cementitious compositions and aggregate derivatives from said compositions  

DOE Patents (OSTI)

Method for the production of cementitious compositions and aggregate derivatives of said compositions, and cementitious compositions and aggregates produced by said method, wherein fluidized bed combustion residue and pozzolanic material, such as pulverized coal combustion system fly ash, are incorporated in a cementitious mix. The mix is cast into desired shape and cured. If desired, the shape may then be crushed so as to result in a fluidized bed combustion residue-fly ash aggregate material or the shape may be used by itself.

Minnick, L. John (Box 271, Plymouth Meeting, PA 19462)

1981-01-01T23:59:59.000Z

395

Monitoring change in biodiversity through composite indices  

E-Print Network (OSTI)

Monitoring change in biodiversity through composite indices S.T. Buckland1,*, A.E. Magurran2 , R Zealand The need to monitor trends in biodiversity raises many technical issues. What are the features of a good biodiversity index? How should trends in abundance of individual species be estimated? How should

Buckland, Steve

396

Compositional Algorithmic Verification of Software Product Lines  

E-Print Network (OSTI)

, and Siavash Soleimanifard2 1 Technische Universit¨at Braunschweig, Germany i.schaefer@tu-braunschweig.de 2 Royal Institute of Technology, Stockholm, Sweden {dilian,siavashs}@csc.kth.se Abstract. Software product expressiveness and a clean and simple model suitable for compositional verification. We generalize a previously

Gurov, Dilian

397

Optically Transparent, Electrically Conductive Composite Medium  

Science Journals Connector (OSTI)

...found below and above these two lower shale beds. Although it is possible that reworking...by the three shocked quartz-bearing shales, but there are at least 250 m of Norian...of the transparent composite medium. anisotropic. The transparency along the ver-tical...

S. JIN; T. H. TIEFEL; R. WOLFE; R. C. SHERWOOD; J. J. MOTTINE JR.

1992-01-24T23:59:59.000Z

398

Privacy Conscious Web Apps Composition Aurlien Faravelon  

E-Print Network (OSTI)

Privacy Conscious Web Apps Composition Aurélien Faravelon SIGMA team Grenoble Informatics Lab ­ 41 is implemented as a web-based tool to compose apps and manage end-users privacy requirements. Our work showcases the unexploited possibilities of current web protocols and technologies in terms of privacy management. Keywords

399

PP composites with Hybrid Nanofillers: NTC phenomenon  

SciTech Connect

Electric conductive plastic composites have a wide potential for commercial applications, some examples are EMI shielding housings and components in automotive industry and in consumer electronics, equipments in health care sector and fuel cell components. A phenomenon in conductive composites, especially in composites with carbon based fillers, is change of thermal induced change in conductivity as a result of morphological transitions. Usually the observed changes are practically irreversible. The phenomenon may cause increasing resistivity, usually called as 'positive temperature coefficient' (PTC) or decreasing resistivity, called 'negative temperature coefficient' (NTC), where the new morphology created by heat treatment is more favorable for electric conductivity compared to the original state. The existence of NTC is a sing of the lost potential in material design and processing. Therefore detailed information about the phenomenon gives us tools to develop high performance conductive materials. It this paper we discuss about NTC phenomenon observed in PP composites with CNT or in-situ synthesized CNT-PANi hybrid nanofiller with an amphiphilic dispersing agent. The goal of the paper is not to present a comprehensive model of this phenomenon; we present some experimental results which may be related to polymer-filler interactions. These details are a part of this complicated phenomenon.

Sarlin, Juha; Immonen, Kirsi [VTT Technical Research Centre of Finland, Sinitaival 6, P.O.Box 1300, FI-33101 Tampere (Finland)

2010-06-02T23:59:59.000Z

400

Binderless composite scintillator for neutron detection  

DOE Patents (OSTI)

Composite scintillator material consisting of a binderless sintered mixture of a Lithium (Li) compound containing .sup.6Li as the neutron converter and Y.sub.2SiO.sub.5:Ce as the scintillation phosphor, and the use of this material as a method for neutron detection. Other embodiments of the invention include various other Li compounds.

Hodges, Jason P [Knoxville, TN; Crow, Jr; Lowell, M [Oak Ridge, TN; Cooper, Ronald G [Oak Ridge, TN

2009-03-10T23:59:59.000Z

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


401

Advanced Manufacturing: Using Composites for Clean Energy  

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

Advanced fiber-reinforced polymer composites, which combine strong fibers with tough plastics, are lighter and stronger than steel. These materials could lower overall production costs in U.S. manufacturing and ultimately drive the adoption of a new clean energy way of life.

402

Compositions and methods for treating nuclear fuel  

DOE Patents (OSTI)

Compositions are provided that include nuclear fuel. Methods for treating nuclear fuel are provided which can include exposing the fuel to a carbonate-peroxide solution. Methods can also include exposing the fuel to an ammonium solution. Methods for acquiring molybdenum from a uranium comprising material are provided.

Soderquist, Chuck Z; Johnsen, Amanda M; McNamara, Bruce K; Hanson, Brady D; Smith, Steven C; Peper, Shane M

2013-08-13T23:59:59.000Z

403

Finite element analysis of substation composite insulators  

Science Journals Connector (OSTI)

Composite insulators are rapidly replacing their porcelain counterparts in electrical substation applications. These insulators consist of a glass-reinforced polymer (GRP) rod, with two metal end fittings radially crimped onto the ends of the rod during assembly. In this paper, axisymmetric finite element models are developed to evaluate the mechanical performance of composite insulators under externally applied axial compression. The analyses are performed by assuming both a perfectly bonded interface between the composite rod and the end fittings, and an imperfect interface which permits large relative sliding with Coulomb friction. Results indicate that the perfect interface model is unrealistic since it predicts singular stresses at the interface comer and an overall linear structural response. On the other hand, the imperfect interface model is found to simulate accurately the structural non-linearity caused by relative sliding of the GRP rod within the end fittings. The imperfect interface model has therefore been used to evaluate the effects of interface friction, and the extent of crimping, on the maximum load-bearing capacity of substation composite insulators.

A. Bansal; A. Schubert; M.V. Balakrishnan; M. Kumosa

1995-01-01T23:59:59.000Z

404

Thermal capacity of composite floor slabs  

Science Journals Connector (OSTI)

AbstractObjective Thermal building simulation tools take account of the thermal capacity of the walls and floors by a one-dimensional characterization. The objective was to obtain thermal equivalent parameters for ribbed or composite slab elements that can be input into one-dimensional models. Method Transient finite element calculations (FEM) were used to establish the heat transfer to and from composite floors using four deck profiles and for daily heating cycles in compartments with defined heat gains and operating conditions. Results The performance of composite slabs was compared to a concrete flat slab for a typical office in the UK and Germany. It was shown that a deep ribbed slab generates a maximum heat flux of 30.5 W/m2 for a 5 °C temperature variation about the mean, and that the daily heat absorbed by a typical composite slab was 220 Wh/m2 floor area. Conclusions Using the thermal capacity of the ribbed floor slabs, the comfort conditions defined in terms of the number of hours over 25 °C are acceptable for many classes of offices. Practical implications Thermally equivalent properties of ribbed slabs can be used in conventional software to predict the thermal performance.

B. Doering; C. Kendrick; R.M. Lawson

2013-01-01T23:59:59.000Z

405

Carbon Fiber Composite Pyramidal Lattice Structures  

E-Print Network (OSTI)

Carbon Fiber Composite Pyramidal Lattice Structures A Thesis Presented to the faculty of the School the facesheets and the core were created from pre-cured, bi-axial carbon fiber laminated plates. The cores were approach which permits lattice fabrication from high specific strength aluminum and titanium alloys. Carbon

Wadley, Haydn

406

Neutron apparatus for measuring strain in composites  

DOE Patents (OSTI)

A method and apparatus for orienting a pulsed neutron source and a multi-angle diffractometer toward a sample of a ceramic-matrix or metal-matrix composite so that the measurement of internal strain (from which stress is calculated) is reduced to uncomplicated time-of-flight measurements.

Kupperman, David S. (Oak Park, IL); Majumdar, Saurindranath (Naperville, IL); Faber, Jr., John F. (Downers Grove, IL); Singh, J. P. (Bolingbrook, IL)

1990-01-01T23:59:59.000Z

407

Novel hard compositions and methods of preparation  

DOE Patents (OSTI)

Novel very hard compositions of matter are prepared by using in all embodiments only a minor amount of a particular carbide (or materials which can form the carbide in situ when subjected to heat and pressure); and no strategic cobalt is needed. Under a particular range of conditions, densified compositions of matter of the invention are prepared having hardnesses on the Rockwell A test substantially equal to the hardness of pure tungsten carbide and to two of the hardest commercial cobalt-bonded tungsten carbides. Alternately, other compositions of the invention which have slightly lower hardnesses than those described above in one embodiment also possess the advantage of requiring no tungsten and in another embodiment possess the advantage of having a good fracture toughness value. Photomicrographs show that the shapes of the grains of the alloy mixture with which the minor amount of carbide (or carbide-formers) is mixed are radically altered from large, rounded to small, very angular by the addition of the carbide. Superiority of one of these hard compositions of matter over cobalt-bonded tungsten carbide for ultra-high pressure anvil applications was demonstrated. 3 figs.

Sheinberg, H.

1983-08-23T23:59:59.000Z

408

Novel hard compositions and methods of preparation  

DOE Patents (OSTI)

Novel very hard compositions of matter are prepared by using in all embodiments only a minor amount of a particular carbide (or materials which can form the carbide in situ when subjected to heat and pressure); and no strategic cobalt is needed. Under a particular range of conditions, densified compositions of matter of the invention are prepared having hardnesses on the Rockwell A test substantially equal to the hardness of pure tungsten carbide and to two of the hardest commercial cobalt-bonded tungsten carbides. Alternately, other compositions of the invention which have slightly lower hardnesses than those described above in one embodiment also possess the advantage of requiring no tungsten and in another embodiment possess the advantage of having a good fracture toughness value. Photomicrographs show that the shapes of the grains of the alloy mixture with which the minor amount of carbide (or carbide-formers) is mixed are radically altered from large, rounded to small, very angular by the addition of the carbide. Superiority of one of these hard compositions of matter over cobalt-bonded tungsten carbide for ultra-high pressure anvil applications was demonstrated.

Sheinberg, Haskell (Los Alamos, NM)

1983-08-23T23:59:59.000Z

409

Composite hydrogen separation element and module  

DOE Patents (OSTI)

There are disclosed improvements in multicomponent composite metal membranes useful for the separation of hydrogen, the improvements comprising the provision of a flexible porous intermediate layer between a support layer and a nonporous hydrogen-permeable coating metal layer, and the provision of a textured coating metal layer. 15 figs.

Edlund, D.J.

1996-03-12T23:59:59.000Z

410

Application of composite repair for pipeline anomalies  

SciTech Connect

The cost of maintaining the structural integrity of the 650,000 kilometer high-pressure gas gathering and transmission pipeline network is a significant part of the operating budget of the US pipeline industry. To help in controlling thee costs, the Gas Research institute (GRI) has supported research resulting in the development of Clock Spring{reg_sign}, a low-cost fiberglass composite alternative to conventional steel sleeves for transmission line pipe reinforcement and repair. Investigation and development of engineering guidelines have been completed. Field validation of laboratory research on application of Clock Spring as a repair for corrosion and mechanical damage defects is in progress. This paper presents an overview of composite repair technology for pipeline corrosion and mechanical damage defects. It summarizes the results and conclusions of modeling and experiments on reinforcement and repair of both corrosion and mechanical damage (i.e., dent and gouge) pipeline defects. These investigations provide quantitative results on the operating envelope of composite reinforcements and installation requirements that ensure sound and reliable repair of pipeline defects. The paper further summarizes the work to date on field installation in verification of composite repair performance.

Stephens, D.R. [Battelle, Columbus, OH (United States); Lindholm, U.S. [Southwest Research Inst., San Antonio, TX (United States); Hill, V.L. [Gas Research Inst., Chicago, IL (United States); Block, N. [Clock Spring Co., Houston, TX (United States)

1996-09-01T23:59:59.000Z

411

Compositions and methods for treating nuclear fuel  

DOE Patents (OSTI)

Compositions are provided that include nuclear fuel. Methods for treating nuclear fuel are provided which can include exposing the fuel to a carbonate-peroxide solution. Methods can also include exposing the fuel to an ammonium solution. Methods for acquiring molybdenum from a uranium comprising material are provided.

Soderquist, Chuck Z; Johnsen, Amanda M; McNamara, Bruce K; Hanson, Brady D; Smith, Steven C; Peper, Shane M

2014-01-28T23:59:59.000Z

412

Total Solar Irradiance Satellite Composites and their  

E-Print Network (OSTI)

Chapter 12 Total Solar Irradiance Satellite Composites and their Phenomenological Effect on Climate. Phenomenological solar signature on climate 310 9. Conclusion 312 1. INTRODUCTION A contiguoustotal solar from each other, in particular about whether the TSI minimum during solar Cycles 22e23 (1995

Scafetta, Nicola

413

DOE HydrogenDOE Hydrogen Composite Tank ProgramComposite Tank Program  

E-Print Network (OSTI)

DOE HydrogenDOE Hydrogen Composite Tank ProgramComposite Tank Program Dr. Neel Sirosh DIRECTOR and validate 5,000 psi storage tanks ­ Tank efficiency: 7.5 ­ 8.5 wt% · Validate 5,000 psi in-tank-pressure regulators ­ Total storage system efficiency: 5.7 wt% · Develop and validate 10,000 psi storage tanks ­ Tank

414

Molecular Structures of Polymer/Sulfur Composites for Lithium...  

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

Structures of PolymerSulfur Composites for Lithium-Sulfur Batteries with Long Cycle Life. Molecular Structures of PolymerSulfur Composites for Lithium-Sulfur Batteries with Long...

415

Synthesis and Characterization of Compositionally Graded Si1...  

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

Compositionally Graded Si1-xGex Layers on Si substrate. Synthesis and Characterization of Compositionally Graded Si1-xGex Layers on Si substrate. Abstract: Thin film of silicon...

416

Relationship between composition and performance of asphalt recycling agents  

E-Print Network (OSTI)

This research was aimed at determining the effects of recycling agent composition on the performance of recycled asphalt with aging. To accomplish this, five experiments were performed, in which blends were produced with controlled compositions...

Peterson, Gerald Dean

1993-01-01T23:59:59.000Z

417

A semantic knowledge management system for laminated composites  

Science Journals Connector (OSTI)

The engineering of laminated composite structures is a complex task for design engineers and manufacturers, requiring significant management of manufacturing process and materials information. Ontologies are becoming increasingly commonplace for semantically ... Keywords: Integration, Interoperability, Laminated composites, Ontologies, Semantic

Vivek Premkumar; Sundar Krishnamurty; Jack C. Wileden; Ian R. Grosse

2014-01-01T23:59:59.000Z

418

Analytical modeling of deformed plain woven thermoplastic composites  

Science Journals Connector (OSTI)

This research addressed the deformation predictability of post-manufactured, plain weave architecture composite panels. Often times during the production of deep drawn composite parts, a fabric preform experie...

John R. Smith; Uday K. Vaidya…

2014-12-01T23:59:59.000Z

419

Impact and energy absorption of laminated and sandwich composites  

E-Print Network (OSTI)

Advanced fiber reinforced composites combine high specific strength and stiffness. Advanced composites are currently being introduced into modern U.S. Navy ships to achieve weight savings, maintenance reduction, and signature ...

Kilic, Yavuz, S.M. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

420

Dielectric Constant and Transport Mechanism of Percolated Polyaniline Nanoclay Composites.  

Science Journals Connector (OSTI)

Dielectric Constant and Transport Mechanism of Percolated Polyaniline Nanoclay Composites. ... We report the dielectric constant and transport mechanism of intercalated nanoclay–polyaniline composite, an industrially ready to use novel nanocomposite, which is prepared by a simple mechanochemical method. ...

Mini Vellakkat; Archana Kamath; S. Raghu; Sharanappa Chapi; Devendrappa Hundekal

2014-09-30T23:59:59.000Z

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


421

FINITE FRACTURE MECHANICS OF MATRIX MICROCRACKING IN COMPOSITES  

E-Print Network (OSTI)

FINITE FRACTURE MECHANICS OF MATRIX MICROCRACKING IN COMPOSITES JOHN A. NAIRN INTRODUCTION damage following complex loading conditions. This chapter describes a fracture mechanics approach to the microcracking problem. A complicating feature of composite fracture mechanics analysis is that laminates often

Nairn, John A.

422

Analytical modeling of composite steel-concrete frame systems  

E-Print Network (OSTI)

of reinforced concrete or composite steel shapes encased in reinforced concrete (SRC), structural steel beams, and composite beam-column joints. To facilitate the modeling of inelastic deformations in joint regions, a panel element capable of representing joint...

Atahan, Ali Osman

1996-01-01T23:59:59.000Z

423

Joining of 6061 Aluminum Matrix-Ceramic Particle Reinforced Composites  

E-Print Network (OSTI)

) ) Joining of 6061 Aluminum Matrix-Ceramic Particle Reinforced Composites by R. Kiehn and T. W................... .. ....... ... ... 3 Literature Review ......... ...... ..... ... . . 3 Conventional Aluminum Brazing ........ 4 Aluminum Composite Joining ........... 5 Aluminum Joining by Unconventional Methods

Eagar, Thomas W.

424

Wood-Composites Industry Benefits from ALS Research  

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

Wood-Composites Industry Benefits from ALS Research Print paris-wood composites Wood scientist and ALS user Jesse Paris (at left) is getting an intimate, 3-D view of adhesive...

425

Lithium Iron Phosphate Composites for Lithium Batteries | Argonne...  

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

Lithium Iron Phosphate Composites for Lithium Batteries Technology available for licensing: Inexpensive, electrochemically active phosphate compounds with high functionality for...

426

Building a More Competitive American Manufacturing Industry with Advanced Composites  

Office of Energy Efficiency and Renewable Energy (EERE)

Our new Manufacturing Innovation Institute for Advanced Composites will help revolutionize clean energy technology one material at a time.

427

Relationship Between Composition and Toxicity of Engine Emission...  

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

Emission Samples Relationship Between Composition and Toxicity of Engine Emission Samples 2003 DEER Conference Presentation: Lovelace Respiratory Research Institute...

428

Relationship Between Composition and Toxicity of Engine Emissions...  

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

Emissions Relationship Between Composition and Toxicity of Engine Emissions 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Lovelace Respiratory Research...

429

Multifunctional Corrosion-resistant Foamed Well Cement Composites  

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

Multifunctional Corrosion-resistant Foamed Well Cement Composites presentation at the April 2013 peer review meeting held in Denver, Colorado.

430

NETL: Novel Inorganic/Polymer Composite Membranes  

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

Novel Inorganic/Polymer Composite Membranes Novel Inorganic/Polymer Composite Membranes Project No.: DE-FE0007632 Ohio State University is developing a cost-effective design and manufacturing process for new membrane modules that capture carbon dioxide (CO2) from flue gas. The membranes consist of a thin, selective inorganic layer, embedded in a polymer structure so that it can be made in a continuous manufacturing process. They will be incorporated in spiral-wound modules for bench-scale tests using coal-fired flue gas. Preliminary cost calculations show that a single-stage membrane process is economically unfavorable, primarily because of the low concentration of CO2 (~14 percent) in the flue gas stream. A two-stage process is more economical, but requires plant operation with a CO2-enriched recycle stream.

431

Composite Engineering Inc | Open Energy Information  

Open Energy Info (EERE)

Name Composite Engineering Inc Name Composite Engineering Inc Place Concord, Massachusetts Zip 1742 Sector Wind energy Product The group will design and manufacture prototype wind turbine blades using a method called Reaction Injection Moulding, or RIM. Coordinates 37.344704°, -78.975299° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.344704,"lon":-78.975299,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

432

Composite Tower Solutions | Open Energy Information  

Open Energy Info (EERE)

Solutions Solutions Jump to: navigation, search Name Composite Tower Solutions Place Provo, Utah Zip 84604 Sector Wind energy Product Composite Tower Solutions manufactures equipment for wind resource assessment needs, including meteorological towers, weather towers, and data collection and instrumentation towers. Coordinates 40.233765°, -111.668509° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.233765,"lon":-111.668509,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

433

Composite Battery Boost | Advanced Photon Source  

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

Water-Like Properties of Soft Nanoparticle Suspensions Water-Like Properties of Soft Nanoparticle Suspensions Real-Time Capture of Intermediates in Enzymatic Reactions A New Multilayer-Based Grating for Hard X-ray Grating Interferometry The Most Detailed Picture Yet of a Key AIDS Protein Superconductivity with Stripes Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Composite Battery Boost December 2, 2013 Bookmark and Share Normalized XANES spectra of Li/Se cell during cycling. Black line is the battery voltage profile. New composite materials based on selenium (Se) sulfides that act as the positive electrode in a rechargeable lithium-ion (Li-ion) battery could boost the range of electric vehicles by up to five times, according to

434

Composite keys? | OpenEI Community  

Open Energy Info (EERE)

Composite keys? Home > Groups > Databus Does DataBus support using composite keys in a Table definition? If not, is there a way to automatically generate a unique value for each entry that is uploaded? Submitted by Hopcroft on 5 September, 2013 - 17:13 1 answer Points: 0 At this time, no, and no way to generate unique key either right now. You can submit a feature request for this though on github. thanks, Dean Deanhiller on 6 September, 2013 - 06:58 Groups Menu You must login in order to post into this group. Recent content Go to My Databus->Data Streams... yes, it is done the same way y... Update rows? How to use streaming chart? if you are an administrator, s... more Group members (7) Managers: Deanhiller Recent members: Bradmin Hopcroft Vikasgoyal Ksearight

435

Oligomer functionalized nanotubes and composites formed therewith  

DOE Patents (OSTI)

Disclosed herein is a sequential functionalization methodology for the covalent modification of nanotubes with between one and four repeat units of a polymer. Covalent attachment of oligomer units to the surface of nanotubes results in oligomer units forming an organic sheath around the nanotubes, polymer-functionalized-nanotubes (P-NTs). P-NTs possess chemical functionality identical to that of the functionalizing polymer, and thus provide nanoscale scaffolds which may be readily dispersed within a monomer solution and participate in the polymerization reaction to form a polymer-nanotube/polymer composite. Formation of polymer in the presence of P-NTs leads to a uniform dispersion of nanotubes within the polymer matrix, in contrast to aggregated masses of nanotubes in the case of pristine-NTs. The covalent attachment of oligomeric units to the surface of nanotubes represents the formation of a functional nanoscale building block which can be readily dispersed and integrated within the polymer to form a novel composite material.

Zettl, Alexander K; Sainsbury, Toby; Frechet, Jean M.J.

2014-03-18T23:59:59.000Z

436

Preparation of fullerene/glass composites  

DOE Patents (OSTI)

Synthesis of fullerene/glass composites is described. A direct method for preparing solid solutions of C{sub 60} in silicon dioxide (SiO{sub 2}) glass matrices by means of sol-gel chemistry is described. In order to produce highly concentrated fullerene-sol-gel-composites it is necessary to increase the solubility of these ``guests`` in a delivery solvent which is compatible with the starter sol (receiving solvent). Sonication results in aggregate disruption by treatment with high frequency sound waves, thereby accelerating the rate of hydrolysis of the alkoxide precursor, and the solution process for the C{sub 60}. Depending upon the preparative procedure, C{sub 60} dispersed within the glass matrix as microcrystalline domains, or dispersed as true molecular solutions of C{sub 60} in a solid glass matrix, is generated by the present method.

Mattes, B.R.; McBranch, D.W.; Robinson, J.M.; Koskelo, A.C.; Love, S.P.

1995-05-30T23:59:59.000Z

437

Solar neutrinos and the solar composition problem  

E-Print Network (OSTI)

Standard solar models (SSM) are facing nowadays a new puzzle: the solar composition problem. New determinations of solar metal abundances lead SSM calculations to conflict with helioseismological measurements, showing discrepancies that extend from the convection zone to the solar core and can not be easily assigned to deficiencies in the modelling of the solar convection zone. We present updated solar neutrino fluxes and uncertainties for two SSM with high (old) and low (new) solar metallicity determinations. The uncertainties in iron and carbon abundances are the largest contribution to the uncertainties of the solar neutrino fluxes. The uncertainty on the ^14N+p -> ^15O+g rate is the largest of the non-composition uncertainties to the CNO neutrino fluxes. We propose an independent method to help identify which SSM is the correct one. Present neutrino data can not distinguish the solar neutrino predictions of both models but ongoing measurements can help to solve the puzzle.

Carlos Pena-Garay; Aldo Serenelli

2008-11-16T23:59:59.000Z

438

The Twin Higgs mechanism and Composite Higgs  

E-Print Network (OSTI)

We combine the Twin Higgs mechanism with the paradigm of Composite Higgs models. In this class of models the Higgs is a pseudo-Nambu-Goldstone boson from a strongly coupled sector near the TeV scale, and it is additionally protected by a discrete symmetry due to the twin mechanism. We discuss the model building issues associated with this setup and quantify the tuning needed to achieve the correct electroweak vacuum and the Higgs mass. In contrast to standard Composite Higgs models, the lightest resonance associated with the top sector is the uncolored mirror top, while the colored top partners can be made parameterically heavier without extra tuning. In some cases, the vector resonances are predicted to lie in the multi-TeV range. We present models where the resonances - both fermions and vectors - being heavier alleviates the pressure on naturalness coming from direct searches demonstrating that theories with low tuning may survive constraints from the Large Hadron Collider.

Low, Matthew; Wang, Lian-Tao

2015-01-01T23:59:59.000Z

439

Preparation of fullerene/glass composites  

DOE Patents (OSTI)

Synthesis of fullerene/glass composites. A direct method for preparing solid solutions of C.sub.60 in silicon dioxide (SiO.sub.2) glass matrices by means of sol-gel chemistry is described. In order to produce highly concentrated fullerene-sol-gel-composites it is necessary to increase the solubility of these "guests" in a delivery solvent which is compatible with the starter sol (receiving solvent). Sonication results in aggregate disruption by treatment with high frequency sound waves, thereby accelerating the rate of hydrolysis of the alkoxide precursor, and the solution process for the C.sub.60. Depending upon the preparative procedure, C.sub.60 dispersed within the glass matrix as microcrystalline domains, or dispersed as true molecular solutions of C.sub.60 in a solid glass matrix, is generated by the present method.

Mattes, Benjamin R. (Santa Fe, NM); McBranch, Duncan W. (Santa Fe, NM); Robinson, Jeanne M. (Los Alamos, NM); Koskelo, Aaron C. (Los Alamos, NM); Love, Steven P. (Los Alamos, NM)

1995-01-01T23:59:59.000Z

440

Composite Technology Development | Open Energy Information  

Open Energy Info (EERE)

Composite Technology Development Composite Technology Development Address 2600 Campus Drive, Suite D Place Lafayette, Colorado Zip 80026 Phone number 303-664-0394 Website http://www.ctd-materials.com/ Coordinates 39.9673767°, -105.0896737° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.9673767,"lon":-105.0896737,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

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


441

Estimation of composite thermal conductivity of a heterogeneous methane hydrate sample using iTOUGH2  

E-Print Network (OSTI)

15–17, 2006 ESTIMATION OF COMPOSITE THERMAL CONDUCTIVITY OFABSTRACT We determined the composite thermal conductivity (kfrom granular ice. The composite thermal conductivity was

Gupta, Arvind; Kneafsey, Timothy J.; Moridis, George J.; Seol, Yongkoo; Kowalsky, Michael B.; Sloan Jr., E.D.

2006-01-01T23:59:59.000Z

442

Reliability-based framework for fatigue damage prognosis of bonded structural elements in aerospace composite structures  

E-Print Network (OSTI)

situ damage detection of composite materials for structuralmaterials, Journal of Composite Materials , 10, 342-354,effects in damaged composite aerospace structures ,

Gobbato, Maurizio

2011-01-01T23:59:59.000Z

443

Cathodic disbondment resistance with reactive ethylene terpolymer blends and composite coatings  

E-Print Network (OSTI)

CD Propagation for RET-Nanoclay Composite Coatings on Silanefor RET/Nanoclay Composites …………………………………………………… Table 6.3:CD Propagation for RET-Nanoclay Composite Coatings on Silane

Love, Corey T.

2008-01-01T23:59:59.000Z

444

Phosphazene groups modified sulfur composites as active cathode materials for rechargeable lithium/sulfur batteries  

Science Journals Connector (OSTI)

A novel phosphazene groups modified sulfur composites cathode [triphosphazene sulfide composite (PS) or nitroaniline–triphosphazene disulfide composite (NPS)] which can give good affinity with electrolytes was...

J. D. Liu; S. Q. Zhang; S. B. Yang; Z. F. Shi; S. T. Zhang; L. K. Wu

2013-11-01T23:59:59.000Z

445

Biochar production method and composition therefrom  

DOE Patents (OSTI)

The invention is directed to a method for producing an oxygenated biochar material possessing a cation-exchanging property, wherein a biochar source is reacted with one or more oxygenating compounds in such a manner that the biochar source homogeneously acquires oxygen-containing cation-exchanging groups in an incomplete combustion process. The invention is also directed to oxygenated biochar compositions and soil formulations containing the oxygenated biochar material.

Lee, James W.; Buchanan, III, Archibald C.; Evans, Barbara R.; Kidder, Michelle K.

2013-03-19T23:59:59.000Z

446

Method of making carbon nanotube composite materials  

DOE Patents (OSTI)

The present invention is a method of making a composite polymeric material by dissolving a vinyl thermoplastic polymer, un-functionalized carbon nanotubes and hydroxylated carbon nanotubes and optionally additives in a solvent to make a solution and removing at least a portion of the solvent after casting onto a substrate to make thin films. The material has enhanced conductivity properties due to the blending of the un-functionalized and hydroxylated carbon nanotubes.

O'Bryan, Gregory; Skinner, Jack L; Vance, Andrew; Yang, Elaine Lai; Zifer, Thomas

2014-05-20T23:59:59.000Z

447

Biochar production method and composition therefrom  

SciTech Connect

The invention is directed to a method for producing an oxygenated biochar material possessing a cation-exchanging property, wherein a biochar source is reacted with one or more oxygenating compounds in such a manner that the biochar source homogeneously acquires oxygen-containing cation-exchanging groups in an incomplete combustion process. The invention is also directed to oxygenated biochar compositions and soil formulations containing the oxygenated biochar material.

Lee, James W; Buchanan, III, Archibald C; Evans, Barbara R; Kidder, Michelle K

2014-04-29T23:59:59.000Z

448

Compositions and methods for improved plant feedstock  

DOE Patents (OSTI)

The invention provides methods for modifying lignin content and composition in plants and achieving associated benefits therefrom involving altered expression of newly discovered MYB4 transcription factors. Nucleic acid constructs for modifying MYB4 transcription factor expression are described. By over-expressing the identified MYB4 transcription factors, for example, an accompanying decrease in lignin content may be achieved. Plants are provided by the invention comprising such modifications, as are methods for their preparation and use.

Shen, Hui; Chen, Fang; Dixon, Richard A

2014-12-02T23:59:59.000Z

449

Influence of Climate on Composition of Corn.  

E-Print Network (OSTI)

TEXAS AGRICULTURAL EXPERIMENT STATION. BULLETIN NO. 15, INFLUENCE OF CLIMATE ON COMPOSITION OF CORN. Digestibility of Southern Food Stuffs: COTTON SEED HULLS; CORN FODDER. ASH ANALYSES. ROASTED COTTON SEED. AGRICIJJ~TURAL AND MECHANICAL... COLLEGE OF TEXAS. A11 Bulletins of this Station are issued free. Anv one interested in any branch -of agricul- ture may have his name placed on our permanent mailing list, and secure future Gmbcrs, 1~ application to GEO. W. CURTIS DIRECTOR College...

Harrington, H. H. (Henry Hill); Adriance, Duncan

1891-01-01T23:59:59.000Z

450

Energy curable compositions having improved cure speeds  

DOE Patents (OSTI)

A composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.

Halm, Leo W. (Blaine, MN)

1993-01-01T23:59:59.000Z

451

Materials compatibility issues for fabric composite radiators  

SciTech Connect

Short term materials compatibility tests have been completed on potential materials to be used in fabric composite radiators for space applications. Specific materials tested include copper, aluminum, titanium, FEP Teflon tubing, and three high strength fabric fibers: alumina-boria-silica, silicon carbide, and silicon dioxide. These materials have been exposed to pure water, methanol, and acetone for periods of time up to 5000 hours at variety of appropriate temperatures.

Marks, T.S.; Klein, A.C. (Department of Nuclear Engineering, Radiation Center, C116, Oregon State University, Corvallis, Oregon 97331-5902 (US))

1991-01-01T23:59:59.000Z

452

Composite bipolar plate for electrochemical cells  

DOE Patents (OSTI)

A bipolar separator plate for fuel cells consists of a molded mixture of a vinyl ester resin and graphite powder. The plate serves as a current collector and may contain fluid flow fields for the distribution of reactant gases. The material is inexpensive, electrically conductive, lightweight, strong, corrosion resistant, easily mass produced, and relatively impermeable to hydrogen gas. The addition of certain fiber reinforcements and other additives can improve the properties of the composite material without significantly increasing its overall cost.

Wilson, Mahlon S. (Los Alamos, NM); Busick, Deanna N. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

453

Explanation of the Random Lengths Framing Lumber Composite Price  

E-Print Network (OSTI)

Explanation of the Random Lengths Framing Lumber Composite Price May 10, 2006 The Random Lengths Framing Lumber Composite is a broad measure of price behavior in the U.S. framing lumber market) Western U.S., 2) Southern U.S., and 3) Canada. Thus, 33% of the Composite is comprised of Southern Pine

454

On Composite Twisted Unknots Chaim Goodman-Strauss  

E-Print Network (OSTI)

On Composite Twisted Unknots Chaim Goodman-Strauss September 15, 1995 Abstract Following Mathieu Ma , Motegi Mo and others, we consider the class of possible composite twisted unknots as well as pairs of com- posite knots related by twisting. At most one composite knot can arise from a particular V -twisting

Goodman-Strauss, Chaim

455

Tailoring The Microwave Permittivity And Permeability Of Composite Materials  

E-Print Network (OSTI)

1 Tailoring The Microwave Permittivity And Permeability Of Composite Materials Kenneth M. Bober/Lowell, Lowell, MA 01854 ABSTRACT The microwave permittivity( r ) and permeability( r ) of composite materials. Polynomials are also used for the ferrite composites because it was determined that the MG theory was unable

Massachusetts at Lowell, University of

456

ENG 4793: Composite Materials and Processes 1 Combining Thermoplastics with  

E-Print Network (OSTI)

1 ENG 4793: Composite Materials and Processes 1 Combining Thermoplastics with Reinforcing Fibers ver 1 ENG 4793: Composite Materials and Processes 2 Outline · Issues · Approaches ­ Short Fibers ­ Long Fibers ­ Continuous Fibers · Conclusions ENG 4793: Composite Materials and Processes 3 Issues

Colton, Jonathan S.

457

The instrumented dynamic perforation test applied to a composite shell  

E-Print Network (OSTI)

The instrumented dynamic perforation test applied to a composite shell S. Pattofatto, H. Tsitsiris Wilson, F-94230 Cachan, France Abstract. Perforation tests are commonly used on composites but give limited results. In this study, a single layer of a thermoplastic woven composite is tested at high

Paris-Sud XI, Université de

458

Composite systems and their representation in quantum and  

E-Print Network (OSTI)

Composite systems and their representation in quantum and classical physics M.P. Seevinck Institute of measurements on subsystems of a composite system as predicted by a particular physical theory; secondly to the composite system they are a part of; and, thirdly, the comparison of different physical theories

Seevinck, Michiel

459

HANSEN SOLUBILITY PARAMETERS FOR A CARBON FIBER/EPOXY COMPOSITE  

E-Print Network (OSTI)

HANSEN SOLUBILITY PARAMETERS FOR A CARBON FIBER/EPOXY COMPOSITE Hélène Launay* , Charles Medom demonstrated as appropriate for the study of interactions between the materials in composite carbon fiber. INTRODUCTION Fiber-reinforced composites are used in a wide range of applications where high stiffness

460

Revenue Maximization with Quality Assurance for Composite Web Services  

E-Print Network (OSTI)

Revenue Maximization with Quality Assurance for Composite Web Services Dani¨el Worm, Miroslav Abstract--Service composition is one of the major approaches in service oriented architecture (SOA) based systems. Due to the inherent stochastic nature of services execution environment the issue of composite

van der Mei, Rob

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


461

High Strength Composite Conductors 2009 NHMFL Science Highlight for NSF  

E-Print Network (OSTI)

High Strength Composite Conductors 2009 NHMFL Science Highlight for NSF DMR-Award 0654118 Magnet the detailed nature of interfaces in the Cu­Nb multilayered composite system from which the high strength arises. Two types of orientation relationships were observed within 0.1 nanometers in the composite

Weston, Ken

462

COMPOSITE PORTLAND CEMENT CONCRETE PAVEMENTS (Tollway) Effective: January 30, 2012  

E-Print Network (OSTI)

COMPOSITE PORTLAND CEMENT CONCRETE PAVEMENTS (Tollway) Effective: January 30, 2012 Revised: May 8 for special applications to composite pavements as shown and described on the Drawings and in this Special as required; 5. Constructing the composite pavement on a prepared subgrade, or subbase, without forms. 6

463

Specification of composite objects based on the ODP Reference Model  

E-Print Network (OSTI)

Specification of composite objects based on the ODP Reference Model D. Ramazani and G. v. Bochmann}@iro.umontreal.ca Abstract In this paper, we describe our experience in using the RM-ODP to specify composite objects. The concept of a composite object as defined in RM-ODP does not take into account its dynamic structure

von Bochmann, Gregor

464

A Nystrom algorithm for electrostatics of an anisotropic composite  

E-Print Network (OSTI)

A Nystrom algorithm for electrostatics of an anisotropic composite Johan Helsing Department algorithms for the electrostatics of locally anisotropic composites seems to be a poorly explored area ective properties of lo- cally anisotropic composites is a topic of importance in physics and in physical

Helsing, Johan

465

Web Service Composition: a Reality Check Jianguo Lu, 2  

E-Print Network (OSTI)

- 1 - Web Service Composition: a Reality Check 1 Jianguo Lu, 2 Yijun Yu, 1 Debashis Roy, 1 Deepa Department, The Open University y.yu@open.ac.uk Abstract Automated web service composition is one dynamically and automatically. To investigate the methods for composite web service construction, we conducted

Lu, Jianguo

466

Thermal Conductivity of Composites Under Di erent Heating Scenarios  

E-Print Network (OSTI)

Thermal Conductivity of Composites Under Di#11;erent Heating Scenarios H.T. Banks #3; , J.H. Hogan of composites under three di#11;erent heating scenarios: (i) a laser pulse heat source, (ii) a preheated composite sample, and (iii) a continuous heat source. 1 Introduction Adhesives such as epoxies, gels

467

The Chemical Composition of Texas Honey and Pecans  

E-Print Network (OSTI)

TEXAS AGRICULTURAL EXPERIMENT STATION AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS W. B. BIZZELL, President BULLETIN NO. 272 JANUARY, 192 1 --- - DIVISION OF CHEMISTRY THE CHEMICAL COMPOSITION OF TEXAS HONEY AND PECANS *. - B. YOUNGBLOOD... ......................................... Description of Samples 5 ........................................ Composition of Honey 6 ........................................ Composition of Pecans 6 ............................. Food Values of Honey and Pecans 8 [Blank Page in Original Bulletin...

Fraps, G. S. (George Stronach)

1921-01-01T23:59:59.000Z

468

Hybrid carbon fiber composite lattice truss structures T. George a,  

E-Print Network (OSTI)

Hybrid carbon fiber composite lattice truss structures T. George a, , V.S. Deshpande b , H June 2014 Accepted 14 June 2014 Available online 22 June 2014 Keywords: A. Carbon fiber A. Polymer­matrix composites (PMCs) D. Mechanical testing a b s t r a c t Carbon fiber reinforced polymer (CFRP) composite

Wadley, Haydn

469

Developments in Oxide Fiber Composites Frank W. Zokw  

E-Print Network (OSTI)

are contingent on the development of durable high-per- formance ceramic composites. With recent discoveries, and toughness, continuous-fiber ceramic composites (CFCCs) offer the greatest potential for enabling elevations that are volatilized by oxidation after composite fabrica- tion, leaving a narrow gap at the fiber­matrix boundary (Fig

Zok, Frank

470

Parallel Composition Communication and Allow Hiding Parallel Processes  

E-Print Network (OSTI)

Parallel Composition Challenge (Dish1+Dish2) || Coke ? = (Dish1 || Coke)+(Dish2 || Coke) Mousavi: Parallel Composition Challenge (Dish1+Dish2) || Coke ? = (Dish1 || Coke)+(Dish2 || Coke) Faron Moller's Result Parallel Parallel Composition and |: Raisons d'^etre (Dish1 + Dish2) Coke (Dish1 Coke) + (Dish2 Coke) (Dish1 + Dish

Mousavi, Mohammad

471

Activated aluminum hydride hydrogen storage compositions and uses thereof  

SciTech Connect

In one aspect, the invention relates to activated aluminum hydride hydrogen storage compositions containing aluminum hydride in the presence of, or absence of, hydrogen desorption stimulants. The invention particularly relates to such compositions having one or more hydrogen desorption stimulants selected from metal hydrides and metal aluminum hydrides. In another aspect, the invention relates to methods for generating hydrogen from such hydrogen storage compositions.

Sandrock, Gary (Ringwood, NJ); Reilly, James (Bellport, NY); Graetz, Jason (Mastic, NY); Wegrzyn, James E. (Brookhaven, NY)

2010-11-23T23:59:59.000Z

472

Glass/polymer composites and methods of making  

DOE Patents (OSTI)

The present invention relates to new glass/polymer composites and methods for making them. More specifically, the invention is glass/polymer composites having phases that are at the molecular level and thereby practicably indistinguishable. The invention further discloses making molecular phase glass/polymer composites by mixing a glass and a polymer in a compatible solvent.

Samuels, W. D. (Richland, WA); Exarhos, Gregory J. (Richland, WA)

1995-01-01T23:59:59.000Z

473

NONLINEAR ACOUSTIC IMAGING OF STRUCTURAL DAMAGES IN LAMINATED COMPOSITES  

E-Print Network (OSTI)

NONLINEAR ACOUSTIC IMAGING OF STRUCTURAL DAMAGES IN LAMINATED COMPOSITES L. Pieczonka1 , A. Klepka1 for imaging of structural damage in a laminated composite plate. The techniques that have been considered are performed on a carbon fiber/epoxy laminated composite plate with barely visible impact damage

Boyer, Edmond

474

Effect of composite microstructure on electrical and mechanical properties of poly(vinyl acetate) composites with carbon black and clay.  

E-Print Network (OSTI)

The electrical and mechanical behavior of carbon black filled poly(vinyl acetate) latex-based and solution-based polymer composites was examined. A set of experiments were performed to distinguish composites with a segregated network (emulsion...

Miriyala, Sethu M.

2009-05-15T23:59:59.000Z

475

Plasma etching a ceramic composite. [Evaluating microstructure  

SciTech Connect

Plasma etching is found to be a superior metallographic technique for evaluating the microstructure of a ceramic matrix composite. The ceramic composite studied is composed of silicon carbide whiskers (SiC(sub W)) in a matrix of silicon nitride (Si3N4), glass, and pores. All four constituents are important in evaluating the microstructure of the composite. Conventionally prepared samples, both as-polished or polished and etched with molten salt, do not allow all four constituents to be observed in one specimen. As-polished specimens allow examination of the glass phase and porosity, while molten salt etching reveals the Si3N4 grain size by removing the glass phase. However, the latter obscures the porosity. Neither technique allows the SiC(sub W) to be distinguished from the Si3N4. Plasma etching with CF4 + 4 percent O2 selectively attacks the Si3N4 grains, leaving SiC(sub W) and glass in relief, while not disturbing the pores. An artifact of the plasma etching reaction is the deposition of a thin layer of carbon on Si3N4, allowing Si3N4 grains to be distinguished from SiC(sub W) by back scattered electron imaging.

Hull, D.R.; Leonhardt, T.A.; Sanders, W.A.

1992-01-01T23:59:59.000Z

476

Combinatorial synthesis of inorganic or composite materials  

DOE Patents (OSTI)

Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by delivering components of materials to predefined regions on a substrate, and simultaneously reacting the components to form at least two materials or, alternatively, allowing the components to interact to form at least two different materials. Materials which can be prepared using the methods and apparatus of the present invention include, for example, covalent network solids, ionic solids and molecular solids. More particularly, materials which can be prepared using the methods and apparatus of the present invention include, for example, inorganic materials, intermetallic materials, metal alloys, ceramic materials, organic materials, organometallic materials, nonbiological organic polymers, composite materials (e.g., inorganic composites, organic composites, or combinations thereof), etc. Once prepared, these materials can be screened for useful properties including, for example, electrical, thermal, mechanical, morphological, optical, magnetic, chemical, or other properties. Thus, the present invention provides methods for the parallel synthesis and analysis of novel materials having useful properties.

Goldwasser, Isy (Palo Alto, CA); Ross, Debra A. (Mountain Ranch, CA); Schultz, Peter G. (La Jolla, CA); Xiang, Xiao-Dong (Danville, CA); Briceno, Gabriel (Baldwin Park, CA); Sun, Xian-Dong (Fremont, CA); Wang, Kai-An (Cupertino, CA)

2010-08-03T23:59:59.000Z

477

Effect of mastitis on the composition of whey and the yield, composition, and quality of cheddar cheese  

E-Print Network (OSTI)

EFFECT OF MASTITIS ON THE COMPOSITION OF WHEY AND THE YIELD, COMPOSITION, AND QUALITY OF CHEDDAR CHEESE A Thesis by MARVIN LAVERNE DUFFUS Submitted to the Graduate College of Texas AlLM University in partial fulfillment of the requirement... for the deoree of MASTER OF SCIENCE December 1973 Major Subject: Food Technology EFFECT OF MASTITIS ON THE COMPOSITION OF WHEY AND THE YIELD, COMPOSITION, AND OUALITY OF CHEDDAR CHEESE A Thesis by MARVIN LAVERNE DUFFUS Approved as to style and content by...

Duffus, Marvin Laverne

2012-06-07T23:59:59.000Z

478

Thermoforming of Continuous Fibre Reinforced Thermoplastic Composites  

SciTech Connect

The introduction of new materials, particularly for aerospace products, is not a simple, quick or cheap task. New materials require extensive and expensive qualification and must meet challenging strength, stiffness, durability, manufacturing, inspection and maintenance requirements. Growth in industry acceptance for fibre reinforced thermoplastic composite systems requires the determination of whole life attributes including both part processing and processed part performance data. For thermoplastic composite materials the interactions between the processing parameters, in-service structural performance and end of life recyclability are potentially interrelated. Given the large number and range of parameters and the complexity of the potential relationships, understanding for whole life design must be developed in a systematic building block approach. To assess and demonstrate such an approach this article documents initial coupon level thermoforming trials for a commercially available fibre reinforced thermoplastic laminate, identifying the key interactions between processing and whole life performance characteristics. To examine the role of the thermoforming process parameters on the whole life performance characteristics of the formed part requires a series of manufacturing trials combined with a series of characterisation tests on the manufacturing trial output. Using a full factorial test programme and considering all possible process parameters over a range of potential magnitudes would result in a very large number of manufacturing trials and accompanying characterisation tests. Such an approach would clearly be expensive and require significant time to complete, therefore failing to address the key requirement for a future design methodology capable of rapidly generating design knowledge for new materials and processes. In this work the role of mould tool temperature and blank forming temperature on the thermoforming of a commercially available thermoplastic based composite laminate is investigated followed by post processed part characterization. Key findings include an optimized composite processing window, and the influence of raw material blank forming temperature and mould tool temperature on part crystallinity and flexural strength. This process study forms one element of a major project structure which has been designed to address the gap between design, analysis and manufacturing, using at its core, a digital framework for the creation and management of performance parameters related to the lifecycle performance of thermoplastic composite structures.

McCool, Rauri; Murphy, Adrian; Wilson, Ryan; Jiang Zhenyu; Price, Mark [School of Mechanical and Aerospace Engineering, Queen's University Belfast, Northern Ireland (United Kingdom)

2011-05-04T23:59:59.000Z

479

Method of making metal-polymer composite catalysts  

DOE Patents (OSTI)

A metal-polymer-carbon composite catalyst for use as a cathode electrocatalyst in fuel cells. The catalyst includes a heteroatomic polymer; a transition metal linked to the heteroatomic polymer by one of nitrogen, sulfur, and phosphorus, and a recast ionomer dispersed throughout the heteroatomic polymer-carbon composite. The method includes forming a heteroatomic polymer-carbon composite and loading the transition metal onto the composite. The invention also provides a method of making a membrane electrode assembly for a fuel cell that includes the metal-polymer-carbon composite catalyst.

Zelena, Piotr (Los Alamos, NM); Bashyam, Rajesh (Los Alamos, NM)

2009-06-23T23:59:59.000Z

480

Photocatalytic studies of Ho–Zr–O nano-composite with controllable composition and defects  

SciTech Connect

With the help of sol–gel method assisted by melting salt, a series of Ho–Zr–O nano-composite with controllable composition and defects have been successfully prepared. Characterization results show that the positions, intensity, and width of the X-ray diffraction peaks of the products have a regular variation with the increase of zirconium element which implies the gradual changes of crystal spacing and product size. At the same time, the molar ratios between holmium and zirconium ions are consistent with the chemical formula and both of them are uniformly distributed in products further showing the perfect formation of targeted materials. Optical properties reveal that diversified defect forms of Ho–Zr–O nano-composite lead to the different absorptions of visible light. Photocatalytic experiments demonstrate Zr{sub 0.8}Ho{sub 0.2}O{sub 2??} nano-crystals have excellent visible-light-responsive photocatalytic activities on some familiar dyes (e.g.: methylene blue and Rhodamine B) which results from the special defect structure, better absorption of visible light and larger specific surface area. It follows that Zr{sub 0.8}Ho{sub 0.2}O{sub 2??} nano-crystals are a new kind of visible-light-responsive photocatalysts with better prospects in conversion and utilization of solar energy. Also, the present melting salt assisted route might be generalized to synthesize other AxByOz composite oxide nano-crystals with more complicated structures. - Highlights: • Ho–Zr–O nano-composite with controllable composition and defects has been obtained. • Diversified defect forms of products lead to the different visible light absorption. • Zr{sub 0.8}Ho{sub 0.2}O{sub 2??} nano-crystals have excellent photocatalytic activities.

Du, Weimin, E-mail: duweimin75@gmail.com [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000 (China); Zhao, Guoyan; Chang, Hongxun; Shi, Fei; Zhu, Zhaoqiang [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000 (China); Qian, Xuefeng [School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240 (China)

2013-09-15T23:59:59.000Z

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


481

Compositions for enhancing hydroysis of cellulosic material by cellulolytic enzyme compositions  

DOE Patents (OSTI)

The present invention relates to compositions comprising a GH61 polypeptide having cellulolytic enhancing activity and an organic compound comprising a carboxylic acid moiety, a lactone moiety, a phenolic moiety, a flavonoid moiety, or a combination thereof, wherein the combination of the GH61 polypeptide having cellulolytic enhancing activity and the organic compound enhances hydrolysis of a cellulosic material by a cellulolytic enzyme compared to the GH61 polypeptide alone or the organic compound alone. The present invention also relates to methods of using the compositions.

Quinlan, Jason; Xu, Feng; Sweeney, Matthew; Johansen, Katja Salomon

2014-09-30T23:59:59.000Z

482

A novel biomimetic approach to the design of high-performance ceramic/metal composites  

E-Print Network (OSTI)

In  particular,  ceramic?matrix  composites  (CMCs)  are M.   2006  Ceramic  and  metal  matrix  composites:  Routes 

Launey, Maximilien E.

2010-01-01T23:59:59.000Z

483

Interfacial chemistry and structure in ceramic composites  

SciTech Connect

The interfacial chemistry and structure of ceramic matrix composites (CMCs) play a major role in the properties of these materials. Fiber-matrix interfaces chemistries are vitally important in the fracture strength, fracture toughness, and fracture resistance of ceramic composites because they influence fiber loading and fiber pullout. Elevated-temperature properties are also linked to the interfacial characteristics through the chemical stability of the interface in corrosive environments and the creep/pullout behavior of the interface. Physical properties such as electrical and thermal conductivity are also dependent on the interface. Fiber-matrix interfaces containing a 1-{mu}m-thick multilayered interface with amorphous and graphitic C to a 1-nm-thick SiO{sub 2} layer can result from sintering operations for some composite systems. Fibers coated with C, BN, C/BC/BN, and Si are also used to produce controlled interface chemistries and structures. Growth interfaces within the matrix resulting from processing of CMCs can also be crucial to the behavior of these materials. Evaluation of the interfacial chemistry and structure of CMCs requires the use of a variety of analytical tools, including optical microscopy, scanning electron microscopy, Auger electron spectroscopy, and transmission electron microscopy coupled with energy dispersive x-ray analysis. A review of the interfacial chemistry and structure of SiC whisker- and fiber-reinforced Si{sub 3}N{sub 4} and SiC/SiC materials is presented. Where possible, correlations with fracture properties and high-temperature stability are made. 94 refs., 10 figs.

Jones, R.H.; Saenz, N.T.; Schilling, C.H.

1990-09-01T23:59:59.000Z

484

Composition of White Lead and Paints.  

E-Print Network (OSTI)

the nature of the material purchased without an expensive analysis, a number of States have passed laws governing the composition of paints offered for sale in their borders. The first of these was North Dakota. JIinneso.la, South Dakota, and Iowa have... cent water, and another sample to contain as much as 22 per cent. A small amount of water may occur naturally in paints. Since the passage of the North Dakota law water is no longer PI brands which formerly contained water when sold in North Dakota...

Fraps, G. S. (George Stronach)

1908-01-01T23:59:59.000Z

485

Fibrous composites comprising carbon nanotubes and silica  

DOE Patents (OSTI)

Fibrous composite comprising a plurality of carbon nanotubes; and a silica-containing moiety having one of the structures: (SiO).sub.3Si--(CH.sub.2).sub.n--NR.sub.1R.sub.2) or (SiO).sub.3Si--(CH.sub.2).sub.n--NCO; where n is from 1 to 6, and R.sub.1 and R.sub.2 are each independently H, CH.sub.3, or C.sub.2H.sub.5.

Peng, Huisheng (Shanghai, CN); Zhu, Yuntian Theodore (Cary, NC); Peterson, Dean E. (Los Alamos, NM); Jia, Quanxi (Los Alamos, NM)

2011-10-11T23:59:59.000Z

486

The Chemical Composition of Some Texas Soils.  

E-Print Network (OSTI)

. The postoffice address is College, Station, Texas. Reports and bulletins are sent free upon application to the Director. THE CHEMICAL COMPOSITION OF SOME TEXAS SOILS. BY G. S. FRAPS. This bulletin is a popular account of a study of a nnmber of Texas soils... of the soil in pots, fertilized with different fertilizing ingredients, also show the needs of the soil for plant food. This is the method we used in our work on the soils described in this bulletin. Third, to ascertain whether or not the soil is acid. A...

Fraps, G. S. (George Stronach)

1907-01-01T23:59:59.000Z

487

Moisture and temperature effects in composite materials  

E-Print Network (OSTI)

) Chairman of Advisory Committee: Dr. Y. Weitsman Th1s thesis concerns env1ronmental effects in graphite/epoxy composites, with emphas1s on environmentally induced damage. The thesis consists of two major parts. The first part presents an experimental 1... weight gain (in %) of a 12-ply unidirectional AS4/3502 graphite/epoxy laminate during exposure to 346'K, 95% R. H. environment. Data (i) and predictions of Flck's law (solid line) Moisture content (ln %) of a 12-ply unidirectional AS4/3502 graphite...

Fang, Gwo-Ping

2012-06-07T23:59:59.000Z

488

Anisotropic fiber alignment in composite structures  

SciTech Connect

High strength material composite structures are formed with oriented fibers to provide controlled anisotropic fibers. Fibers suspended in non-dilute concentrations (e.g., up to 20 volume percent for fibers having an aspect ratio of 20) in a selected medium are oriented by moving an axially spaced array of elements in the direction of desired fiber alignment. The array elements are generally perpendicular to the desired orientation. The suspension medium may also include sphere-like particles where the resulting material is a ceramic.

Graham, A.L.; Mondy, L.A.; Guell, D.C.

1992-12-31T23:59:59.000Z

489

Design of a Composite Membrane with Patches  

SciTech Connect

This paper is concerned with minimization and maximization problems of eigenvalues. The principal eigenvalue of a differential operator is minimized or maximized over a set which is formed by intersecting a rearrangement class with an affine subspace of finite co-dimension. A solution represents an optimal design of a 2-dimensional composite membrane {Omega}, fixed at the boundary, built out of two different materials, where certain prescribed regions (patches) in {Omega} are occupied by both materials. We prove existence results, and present some features of optimal solutions. The special case of one patch is treated in detail.

Cuccu, Fabrizio, E-mail: fcuccu@unica.i [University of Cagliari, Dipartimento di Matematica e Informatica (Italy); Emamizadeh, Behrouz, E-mail: bemamizadeh@pi.ac.a [Petroleum Institute, Department of Mathematics (United Arab Emirates); Porru, Giovanni, E-mail: porru@unica.i [University of Cagliari, Dipartimento di Matematica e Informatica (Italy)

2010-10-15T23:59:59.000Z

490

Conductive ceramic composition and method of preparation  

DOE Patents (OSTI)

A ceramic anode composition is formed of a multivalent metal oxide or oxygenate such as an alkali metal, transition metal oxygenate. The anode is prepared as a non-stoichiometric crystalline structure by reaction and conditioning in a hydrogen gas cover containing minor proportions of carbon dioxide and water vapor. The structure exhibits a single phase and substantially enhanced electrical conductivity over that of the corresponding stoichiometric structure. Unexpectedly, such oxides and oxygenates are found to be stable in the reducing anode fuel gas of a molten carbonate fuel cell. 4 figures.

Smith, J.L.; Kucera, E.H.

1991-04-16T23:59:59.000Z

491

A BASIS FOR MODIFYING THE TANK 12 COMPOSITE SAMPLING DESIGN  

SciTech Connect

The SRR sampling campaign to obtain residual solids material from the Savannah River Site (SRS) Tank Farm Tank 12 primary vessel resulted in obtaining appreciable material in all 6 planned source samples from the mound strata but only in 5 of the 6 planned source samples from the floor stratum. Consequently, the design of the compositing scheme presented in the Tank 12 Sampling and Analysis Plan, Pavletich (2014a), must be revised. Analytical Development of SRNL statistically evaluated the sampling uncertainty associated with using various compositing arrays and splitting one or more samples for compositing. The variance of the simple mean of composite sample concentrations is a reasonable standard to investigate the impact of the following sampling options. Composite Sample Design Option (a). Assign only 1 source sample from the floor stratum and 1 source sample from each of the mound strata to each of the composite samples. Each source sample contributes material to only 1 composite sample. Two source samples from the floor stratum would not be used. Composite Sample Design Option (b). Assign 2 source samples from the floor stratum and 1 source sample from each of the mound strata to each composite sample. This infers that one source sample from the floor must be used twice, with 2 composite samples sharing material from this particular source sample. All five source samples from the floor would be used. Composite Sample Design Option (c). Assign 3 source samples from the floor stratum and 1 source sample from each of the mound strata to each composite sample. This infers that several of the source samples from the floor stratum must be assigned to more than one composite sample. All 5 source samples from the floor would be used. Using fewer than 12 source samples will increase the sampling variability over that of the Basic Composite Sample Design, Pavletich (2013). Considering the impact to the variance of the simple mean of the composite sample concentrations, the recommendation is to construct each sample composite using four or five source samples. Although the variance using 5 source samples per composite sample (Composite Sample Design Option (c)) was slightly less than the variance using 4 source samples per composite sample (Composite Sample Design Option (b)), there is no practical difference between those variances. This does not consider that the measurement error variance, which is the same for all composite sample design options considered in this report, will further dilute any differences. Composite Sample Design Option (a) had the largest variance for the mean concentration in the three composite samples and should be avoided. These results are consistent with Pavletich (2014b) which utilizes a low elevation and a high elevation mound source sample and two floor source samples for each composite sample. Utilizing the four source samples per composite design, Pavletich (2014b) utilizes aliquots of Floor Sample 4 for two composite samples.

Shine, G.

2014-11-25T23:59:59.000Z

492

Chemical composition of Hanford Tank SY-102  

SciTech Connect

The US Department of Energy established the Tank Waste Remediation System (TWRS) to safely manage and dispose of the radioactive waste, both current and future, stored in double-shell and single-shell tanks at the Hanford sites. One major program element in TWRS is pretreatment which was established to process the waste prior to disposal using the Hanford Waste Vitrification Plant. In support of this program, Los Alamos National Laboratory has developed a conceptual process flow sheet which will remediate the entire contents of a selected double-shelled underground waste tank, including supernatant and sludge, into forms that allow storage and final disposal in a safe, cost-effective and environmentally sound manner. The specific tank selected for remediation is 241-SY-102 located in the 200 West Area. As part of the flow sheet development effort, the composition of the tank was defined and documented. This database was built by examining the history of liquid waste transfers to the tank and by performing careful analysis of all of the analytical data that have been gathered during the tank`s lifetime. In order to more completely understand the variances in analytical results, material and charge balances were done to help define the chemistry of the various components in the tank. This methodology of defining the tank composition and the final results are documented in this report.

Birnbaum, E.; Agnew, S.; Jarvinen, G.; Yarbro, S.

1993-12-01T23:59:59.000Z

493

Discoloration resistant, flexible, radiation curable coating compositions  

SciTech Connect

A low dosage radiation polymerizable protective and decorative coating composition or paint, coated articles bearing such a protective coating and processess for preparing such articles. The radiation polymerizable coating composition comprises an organic resin/monomer mixture of: (A) between about 97 and about 3 weight percent alphabeta olefinically unsaturated organic resin containing between about 0.5 and about 5 vinyl unsaturation units per 1000 molecular weight of said resin, and (B) between about 3 and about 97 weight percent vinyl monomers polymerizable with said resin upon exposure to radiation, characterized in that said vinyl monomers include N-vinyl-2-pyrrolidone in an amount of from about 3 and up to about 10 weight percent based on the total weight of (A) and (B). The flexible coating exhibits excellent physical qualtities and good adhesion to a variety of substrates being particularly suitable for use on vinyl chloride fabric, wherein it is discoloration resistant after heat aging. Preferred articles bearing such a coating, which may comprise large amounts of pigment, are preferably cured by exposure to electron beam radiation.

Cassatta, J.C.; Garrett, D.L. Jr.; Van Oene, H.

1984-10-16T23:59:59.000Z

494

Dark Matter Constraints on Composite Higgs Models  

E-Print Network (OSTI)

In composite Higgs models the pseudo-Nambu-Goldstone Boson (pNGB) nature of the Higgs field is an interesting alternative for explaning the smallness of the electroweak scale with respect to the beyond the Standard Model scale. In non-minimal models additional pNGB states are present and can be a Dark Matter (DM) candidate, if there is an approximate symmetry suppressing their decay. Here we assume that the low energy effective theory (for scales much below the compositeness scale) corresponds to the Standard Model with a pNGB Higgs doublet and a pNGB DM multiplet. We derive general effective DM Lagrangians for several possible DM representations (under the SM gauge group), including the singlet, doublet and triplet cases. Within this framework we discuss how the DM observables (relic abundance, direct and indirect detection) constrain the dimension-6 operators induced by the strong sector assuming that DM behaves as a Weakly Interacting Particle (WIMP) and that the relic abundance is settled through the free...

Fonseca, Nayara; Lessa, Andre; Lopez-Honorez, Laura

2015-01-01T23:59:59.000Z

495

Light Composite Higgs: LCH@LHC  

E-Print Network (OSTI)

Here I summarize some of the salient features of technicolor theories with technifermions in higher dimensional representations of the technicolor gauge group. The expected phase diagram as function of number of flavors and colors for the two index (anti)symmetric representation of the gauge group is reviewed. After having constructed the simplest walking technicolor theory one can show that it is not at odds with the precision measurements. The simplest theory also requires, for consistency, a fourth family of heavy leptons. The latter may result in an interesting signature at LHC. In the case of a fourth family of leptons with ordinary lepton hypercharge the new heavy neutrino can be a natural candidate of cold dark matter. New theories will also be proposed in which the critical number of flavors needed to enter the conformal window is higher than in the one with fermions in the two-index symmetric representation, but lower than in the walking technicolor theories with fermions only in the fundamental representation of the gauge group. Due to the near conformal/chiral phase transition the composite Higgs is very light compared to the intrinsic scale of the technicolor theory. For the two technicolor theory the composite Higgs mass is predicted not to exceed 150 GeV

Francesco Sannino

2005-06-21T23:59:59.000Z

496

Heavy Petroleum Composition. 5. Compositional and Structural Continuum of Petroleum Revealed  

Science Journals Connector (OSTI)

upper limit of hydrocarbon compositional space for petroleum and other fossil oils. ... in hydrocarbon resources, petroleum, coal, and oil shale. ... changes, introduction of miscible gases and liqs., and mixing with diluents and other oils, as well as by acid stimulation, hot oiling, and other oilfield operations. ...

David C. Podgorski; Yuri E. Corilo; Leonard Nyadong; Vladislav V. Lobodin; Benjamin J. Bythell; Winston K. Robbins; Amy M. McKenna; Alan G. Marshall; Ryan P. Rodgers

2012-12-28T23:59:59.000Z

497

Optical and Mechanical Effects of Elastomeric Distributed Bragg Reflectors  

E-Print Network (OSTI)

colour selective mirrors as can be seen in Figure 1.2(b), where the DBR is preferentially reflecting green light while allowing other colours to transmit through it as shown in Figure 1.3. Since DBRs can be made from transparent materials, and because its... materials, and using such materials for creating dielec- tric mirrors will allow them to exhibit their unique properties in conjunction with the optical properties defined by their periodic structure. Interaction between polymers and their solvents is a...

Kamita, Gen

2014-05-27T23:59:59.000Z

498

Project Profile: High Performance Reflector Panels for CSP Assemblies  

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

PPG, under the CSP R&D FOA, is aiming to develop and commercialize large-area second-surface glass mirrors that are superior in value, cost, and performance, to existing mirrors on the market today.

499

Code division multiple access signaling for modulated reflector technology  

DOE Patents (OSTI)

A method and apparatus for utilizing code division multiple access in modulated reflectance transmissions comprises the steps of generating a phase-modulated reflectance data bit stream; modifying the modulated reflectance data bit stream; providing the modified modulated reflectance data bit stream to a switch that connects an antenna to an infinite impedance in the event a "+1" is to be sent, or connects the antenna to ground in the event a "0" or a "-1" is to be sent.

Briles, Scott D. (Los Alamos, NM)

2012-05-01T23:59:59.000Z

500

High-Frequency Radars: Beamforming Calibrations Using Ships as Reflectors  

Science Journals Connector (OSTI)

Linear array antennas and beamforming techniques offer some advantages compared to direction finding using squared arrays. The azimuthal resolution depends on the number of antenna elements and their spacing. Assuming an ideal beam pattern and no ...

X. Flores-Vidal; P. Flament; R. Durazo; C. Chavanne; K.-W. Gurgel

2013-03-01T23:59:59.000Z